Search Results — 2000 specimen records retrieved (1618 records with coordinates)
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(For large data reqests, please contact Jason Alexander, jason_alexander@berkeley.edu.)
 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/cch_archive/).
 Records are made available under the CCH Data Use Terms.
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CHSC24433  Abies concolor M. S. Taylor 1976-2-22 1001 Butte 2 mi n of Cohasset, ca. 10 ft e of Cohasset Hwy. Comment
  SEINET10530581  Abies magnifica Mary Susan Taylor 1977-8-17 Taylor 1487 Butte Scattered in Red Fir Forest, at Humboldt Summit at Butte-Tehama County line, ca. 50-100 ft W of Old Humboldt Rd on Butte County side; with Arctostaphylos neva densis, Hackelia californica. 2134 Comment
  CHSC33590  Acer circinatum M. S. Taylor 1981-5-21 3789 Butte In Mayaro, along creek, ca. 2 mi ne of Pulga on Feather River Hwy 70 487 Comment
  CHSC11866  Acer glabrum var. torreyi E. B. Copeland 1930-6-28 423 Butte Jonesville, Butte County, (along streams down to 1500 m.). 2100 Comment
  RSA30419  Acer macrophyllum A. A. Heller 1914-3-19 11213 Butte Canyon of Chico Creek Comment
  UC203657  Acer macrophyllum A. A. Heller 1914-3-19 11213 Butte Canyon of Chico Creek along the stream canyon of Chico Creek Comment
  SEINET7893958  Acer macrophyllum M. J. Williams 1967-4-15 s.n. Butte Feather River Highway. 671 Comment
  RSA0045589  Acer negundo Lowell Ahart 2012-6-21 18222 Butte About 25 yards west of the Freeway, 70 yards south of Big Chico Creek, Lower Bidwell Park, Chico. 63 Comment
  RSA18969  Acer negundo subsp. californicum L. S. Rose 1937-6-10 37378 Butte 7 miles west of Honcut, along the banks of the Feather River 23 Comment
  CHSC6000  Acer palmatum M. MacArthur 1968-6-19 272 Butte Lawn in front of ADM. bld., near main entrance, Chico State College. 60 Comment
  CHSC250  Achillea millefolium M. Roberson 1956-5-28 Butte Near Paradise along Skyway. 548 Comment
  SEINET10475101  Achillea millefolium var. californica Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4225 Butte T21N R6E sec 10? Ca. 2 mi s of Milsap Bar, ca. 23 mi ne of Oroville. Yellow Pine Forest; 750 m. 750 Comment
  CDA13870  Achnatherum lemmonii G. F. Hrusa, T. D. Wilfred 1997-5-7 13728 Butte Sierra Nevada; above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  CHSC109860  Achnatherum lemmonii L. P. Janeway 2012-6-7 10857 Butte Northern High Sierra Nevada. Southwestern end of Rocky Ridge, 0.8 km west of Ponderosa Way/Rim Road, near high-voltage power lines. 895 Comment
  CHSC41351  Achnatherum lemmonii R. A. Schlising; R. Banchero 1980-7-7 3861 Butte E part of country, NE of village of Feather Falls. 1280 Comment
  CHSC42933  Achnatherum lemmonii Lowell Ahart 1987-7-8 5793 Butte Along Big Bar Mountain Road, about 3 miles south-west of Coyote Gap, south-east of Pulga. 1280 Comment
  CHSC49587  Achnatherum stillmanii Vernon Oswald 1984-6-19 1304 Butte Hwy 32, 9.3 mi n of Forest Ranch. 1036 Comment
  HSC68162  Achyrachaena mollis J. P. Smith, J. O. Sawyer 1973-4-14 6044 Butte Bruce Lane, between Skyway and Humboldt Rd., E of Chico. Comment
  UC891062  Achyrachaena mollis A. A. Heller 1914-4-11 11277 Butte 8 mi n of Oroville Comment
  SEINET10474392  Achyrachaena mollis Mary Susan Taylor 1974-4-24 Taylor 189 Butte Junction of Broyles Road and Hwy 99, ca. 9 mi N of Chico. Valley Grassland. 61 Comment
  CHSC37260  Acmispon americanus var. americanus L. Ahart 1982-6-15 3578 Butte Ca. 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 1000 Comment
  JEPS113174  Acmispon argophyllus var. fremontii Lowell Ahart 2007-5-29 13937 Butte On the east side of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 3/4 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 585 Comment
  CHSC113097  Acmispon brachycarpus Lowell Ahart 2013-11-18 19281 Butte Below the high water line of Lake Oroville, about 150 yards northeast of the boat ramp at the end of Stringtown Road, about 50 yards north of the road, about 2 1/2 miles (air) northeast of Hurleton. 261 Comment
  CHSC117000  Acmispon brachycarpus Lowell Ahart 2016-6-4 20921 Butte On the north side of Lumpkin Road, about 100 yards north of McCabe Creek, about 3 miles (air) west of Forbestown. 387 Comment
  CHSC90380  Acmispon brachycarpus Lisa J. Newsum 1984-4-19 19 Butte Bidwell Heights Rd., 1 1/4 from jct. with Hwy 32, 7 mi e of Chico. 304 Comment
  CHSC74088  Acmispon grandiflorus var. macranthus B. Castro; E. Hubert 1996-7-16 683 Butte BlackJack Fire. Ca 5 air mi N of Brush Creek, ca 0.4 mi S of Rogers Cow Camp on SE-facing slope of recently burned area. 1188 Comment
  CHSC33584  Acmispon parviflorus M. S. Taylor 1981-5-5 3597 Butte E side of Lumpkin-LaPorte Rd, 1 mi n of Enterprise bridge over south fork Feather River, ca. 10 air mi e of Oroville. Comment
  CHSC49841  Acmispon strigosus Vernon H. Oswald 1990-4-2 4141 Butte East side of Feather River in Oroville, Montgomery St access. Occasional on river-washed dredge tailings near the river directly w of Montgomery St. 42 Comment
  RSA0116105  Aconitum columbianum Lowell A. Ahart 2014-7-13 19652 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  UC1564734  Aconitum columbianum V. Oswald and L. Ahart 1989-7-21 3878 Butte ca. 4.5 mi. (air) s.e. Jonesville (ca. 0.8 mi. (air) s.e. of Summit Lake); middle branch upper Butte Creek 1828 Comment
  CHSC52675  Aconitum columbianum var. columbianum Kirsten Tarp 1983-8-12 343 Butte At Feather River on Skyway w of Philbrook Reservoir, by stream. 1524 Comment
  CAS-BOT-BC412870  Aconogonon davisiae E. B. Copeland 1914-8-7 11663 Butte Summit east of Jonesville 2133 Comment
  UCD98786  Aconogonon phytolaccifolium H. F. Copeland 1930-7-21 s.n. Butte Jonesville. 1524 Comment
  CHSC34190  Actaea rubra L. Ahart 1981-9-21 3194 Butte Along Pinkard Creek, ca. 1/2 mi n of the Lost Creek Reservoir. 1100 Comment
  CAS-BOT-BC29925  Adenocaulon bicolor E. B. Copeland 1930-8-9 483 Butte Jonesville 1500 Comment
  SEINET10483637  Adenostoma fasciculatum Mary Susan Taylor 1975-4-25 Taylor 494 Butte Ca. 1/4 to 1/2 mi E of Cohasset Hwy, along dirt rd leading up onto ridge, ca. 10 mi NE of Chico. Soil wet red clay. Mixed Chaparral. Comment
  SEINET10529852  Adiantum capillus-veneris Mary Susan Taylor 1980-4-19 Taylor 2540 Butte S side of Humbug, NE of Centerville. With J.D. Jokerst. 366 Comment
  CHSC9263  Adiantum jordanii D. C. Burns 1971-4-9 129 Butte Abundant ca. 1 mi e of the intersection of Manzanita Ave. and Centennial Ave. (lower Big Chico Creek Canyon, called the fern banks). 82 Comment
  UC440495  Adiantum jordanii Mrs. R. M. Austin 1896-5-1 242 Butte bluff of Butte Creek Comment
  CHSC11373  Aesculus californica Lowell Ahart 1970-5-12 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC3857  Aesculus carnea Gary Dutton 1966-4-13 205 Butte Found in front of CSC Aud. Comment
  CHSC65323  Agoseris glauca var. monticola Lowell Ahart 1995-10-3 7669 Butte Along the north side of Butte Creek House Meadow, about 2 1/2 miles (air) north-east of Snag Lake. 1767 Comment
  HSC43093  Agoseris heterophylla Maralyn O'Meara 1974-4-20 298 Butte Table Mtn. 305 Comment
  UC57397  Agoseris heterophylla var. heterophylla H. E. Brown Apr 15 1897-Apr 30 1897 300 Butte near Clear Creek 53 Comment
  CAS-BOT-BC13174  Agoseris monticola V. Oswald; L. Ahart 1988-10-6 3707 Butte Near the headwaters of Big Kimshew Creek, ca. 1.5 air miles NE of Jones Meadow 1950 Comment
  RSA699526  Agoseris retrorsa R. D. Fischer 2004-4-13 0132 Butte Chico. Sierra Nevada Foothills within upper Bidwell Park in Chico on the east-side addition along Hwy 32. Located on ridge top, between Hwy 32 and Big Chico Creek canyon, near beginning of Bloody Pin Trail. 427 Comment
  CHSC31440  Agrimonia gryposepala L. Ahart 1980-7-29 2504 Butte Near Forbestown Rd, ca. 100 m e of the jct of Black Bart Rd and Forbestown Rd, ca. 1 mi w of Robinson Mill Rd, w of Forbestown. 750 Comment
  JEPS95035  Agrostis capillaris Lowell Ahart 1997-9-27 7915 Butte back yard at the Ehmann Home, corner of Lincoln and Robinson Streets, Oroville Oroville 51 Comment
  CHSC70823  Agrostis exarata var. monolepis B. Castro; H. Durio, L. Gehrung 1995-7-24 589 Butte Ca 1.5 air mi S of Hungry Hunt Peak, and 1.5 mi E of Hwy 70, ca 0.2 mi S of 'A' Spur off USFS Rd 22N84. 914 Comment
  RSA299243  Agrostis gigantea M. S. Taylor 1978-8-21 1796 Butte Lake Madrone at its s jct with Oroville-Quincey Hwy ca. 10 mi ne of Oroville. 610 Comment
Read comments Oct 9 2010
  CHSC78353  Agrostis hendersonii Lowell Ahart 2000-6-27 8515 Butte Big Bald Rock, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 993 Comment
  CHSC90995  Agrostis microphylla Lowell Ahart 2005-5-11 11793 Butte In swales between vernal pools, south part of North Table Mountain, about 200 yards northwest of the poor dirt road off of Cherokee Road, about 200 yards south of the rim into Beatson Hollow, about 7 miles (air) north of Oroville. 358 Comment
  CHSC64252  Agrostis stolonifera S. C. Morey 1983-7-23 581 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC113417  Agrostis thurberiana Lowell Ahart 2014-7-10 19618 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CAS-BOT-BC48024  Ailanthus altissima John Thomas Howell 1980-5-28 53713 Butte Honcut Creek on road from Oroville to Marysville. 30 Comment
  CHSC78714  Ailanthus altissima L. P. Janeway; B. Castro 2000-5-9 6713 Butte Sacramento Valley. South side of Chico; backyard of house on south side of 19th Street between Park Avenue and Salem Street. 60 Comment
  CAS-BOT-BC138424  Aira caryophyllea Lowell Ahart 1980-4-13 2078 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC6700  Aira caryophyllea Marilyn Lee 1968-4-19 127 Butte Side of Cherokee Road, ca 2 miles S. of Cherokee and 100 yards E. of cemetary, Table Mt. Comment
  SEINET7067154  Aira caryophyllea A. G. Vestal 1947-4-30 s.n. Butte Along the road to Cherokee. Coordinate datum: NAD27. UTM Zone 10, 626283mE, 4388764mN. Comment
  JEPS98406  Aira elegantissima Lowell Ahart 2000-5-17 8363 Butte 7 1/2 air miles W of Oroville (S margin of Thermalito Afterbay, N side of the poor dirt road, about 1/10 mi N of the Richvale Hwy, 1/2 mi E of Hwy 99) 42 Comment
  CHSC112458  Alisma lanceolatum Lowell Ahart 2013-5-23 18707 Butte About 1/2 mile southeast of the Honcut Cemetery, about 3 1/4 miles (air) northeast from Honcut. 54 Comment
  CHSC96944  Alisma triviale Lowell Ahart 2007-7-8 14277 Butte On the south side of North Honcut Creek, Peter Ahart Ranch, about 3/4 miles north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 45 Comment
  CHSC116575  Allium amplectens B. Castro; Robin Carter 2016-3-30 2127 Butte Sacramento Valley. CA1.6 air mi E of Hwy 99, 2 mi S of Hwy 162E and 1.5 mi SSW of the Oroville Airport, off N edge of SE ortion of the Thermalito Afterbay, near S end of old Wilbur Road. 44 Comment
  CHSC51934  Allium amplectens E. Ray Latham 1988-4-21 Butte 100 m E of the E end of Fremont St, Chico. 30 Comment
  POM219305  Allium campanulatum H. F. Copeland 1931-6-9 1511 Butte Jonesville. Comment
  CHSC36948  Allium cratericola R. A. Schlising 1981-3-29 4010 Butte N of Oroville and Cherokee, off Hwy 70 on Lunt Road. 533 Comment
  CAS-BOT-BC135814  Allium jepsonii A. A. Heller 1940-6-5 15703 Butte Jarboe Pass on the Feather River Highway 609 Comment
  CAS-BOT-BC135819  Allium jepsonii B. Castro 1993-7-27 488 Butte Ca 2.5 mi SSW of Big Bar Mtn, 1.1 mi W of jcn of USFS rd 22N84 with Rd 23N28, and then S to end of spur road which splits off to the S of USFS Rd 22N84. 950 Comment
  CHSC37130  Allium jepsonii M. S. Taylor; R. A. Schlising 1982-6-24 4750 Butte W side of Ponderosa Way (Rim Rd), 0.3 mi n of Jarbo Gap on Hwy 70, ca. 15 air mi n of Oroville. 792 Comment
  UC843376  Allium membranaceum Lewis S. Rose 1937-6-10 37371 Butte Forbestown 838 Comment
  CAS-BOT-BC472805  Allium obtusum Lowell Ahart 1988-3-28 5954 Butte Near Lumpkin Ridge Road, about 1.5 miles east of Camp 18, about 8 miles east of Feather Falls 1280 Comment
  CDA13893  Allium obtusum var. conspicuum G. F. Hrusa, T. D. Wilfred 1997-5-8 13750 Butte Sierra Nevada; Near summit of slope facing SSE above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  CHSC36910  Allium platycaule R. A. Schlising; R. Banchero 1980-7-7 3853 Butte E part of county, E of Feather Falls along Lumpkin/La Porte Road at Lumpkin Ridge. 1280 Comment
  CHSC63486  Allium sanbornii var. sanbornii Lowell Ahart 1994-7-28 7526 Butte On the south side of Bean Creek Road, about 1/2 mile south-east of Little Bald Rock. 914 Comment
  CAS-BOT-BC262  Allocarya austiniae R. M. Austin 1883-5-1 s.n. Butte unspecified Comment
  CHSC44408  Allophyllum divaricatum Lowell Ahart 1988-7-3 6117 Butte Along the road gutter, along the road to the generator at Ponderosa Reservoir, about 1 mile east of the Ponderosa Dam. 457 Comment
  RSA173366  Allophyllum integrifolium H. F. Copeland 1928-8-18 1010 Butte Neighborhood of Jonesville 1524 Comment
  JEPS119570  Alnus rhombifolia Lowell Ahart 2012-2-22 17741 Butte About 100 yards of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  RSA299120  Alopecurus carolinianus L. Ahart 1977-4-19 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  CHSC27051  Alopecurus saccatus Lowell Ahart 1978-5-2 Butte On Table Mountain, about 7 miles n of Oroville. 400 Comment
  HSC100810  Alopecurus saccatus Lowell Ahart 2010-5-16 16691 Butte ~1/4 mi. S of the parking area, N Table Mountain, 4 1/2 (air) mi. NE of Oroville. 372 Comment
  CHSC115153  Amaranthus albus Lowell Ahart 2015-6-6 20202 Butte About 20 yards north of the dirt road, about 5/8 mile northwest of the iron gate along Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north of Oroville. 304 Comment
  UCD97101  Amaranthus albus L. Ahart 1982-7-10 3671 Butte 1/4 mi se of Graylodge HQ, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. Comment
  CHSC31526  Amaranthus blitoides L. Ahart 1978-7-23 1789 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC80575  Amaranthus deflexus Lowell Ahart 2001-6-16 8845 Butte Edges of the lawn, at the Nature Center, west of the 'Deer Pen', Chico. 60 Comment
  JEPS118040  Amaranthus deflexus Lowell Ahart 2011-6-3 17362 Butte Wood chipped planter area between Bidwell Mansion parking area and Gateway Science Museum, Chico 60 Comment
  UCD105585  Amaranthus retroflexus L. Ahart 1982-10-11 3850 Butte N of check-in station, Graylodge Wildlife Refuge, ca. 12 miles sw of Gridley. 35 Comment
  RSA29939  Amaranthus retroflexus I. L. Wiggins 1928-9-9 3345 Butte Sandy Gulch Creek, 3 miles west of Chico Comment
  CAS-BOT-BC55584  Ambrosia psilostachya Lowell Ahart 1982-10-11 3859 Butte Gray Lodge, south-west of Gridley 35 Comment
  CHSC38320  Ambrosia psilostachya Vernon Oswald 1983-8-27 1033 Butte Upper Bidwell Park, Chico, between the parking areas at Bear Hole and Diversion Dam. 121 Comment
  UCD128818  Ambrosia psilostachya G. K. Helmkamp; E. A. Helmkamp 2007-10-7 13076 Butte Northern Sacramento Valley: Biggs East Hwy, 1.6 miles east of CA-99 at Biggs. 35 Comment
  CHSC46399  Amelanchier pallida Lowell Ahart 1989-5-29 6320 Butte Along the dirt road, just west of Pinkard Creek, about 1/4 mile north of the Lost Creek Dam. 1005 Comment
  UCD112887  Amelanchier pallida A. A. Heller 1919-5-17 13156 Butte Banks of the Feather River near Stirling. Comment
  JEPS110082  Ammannia coccinea Lowell Ahart 2006-8-5 13084 Butte On the bottom of a large wash, Peter Ahart Ranch, about 1 1/2 miles north and 300 yards east of Honcut, about 12 miles south of Oroville Comment
  UC1101419  Ammannia coccinea Herbert L. Mason and Verne Grant 1946-9-27 13141 -A Butte 3 mi. w. Biggs Comment
  SEINET10452865  Ammannia coccinea Lowell Ahart 1990-10-5 Ahart 6632 Butte Below the high water line of Lake Oroville, about 1/8 mile south-west of the Enterprise Boat Launch Area, about 3/4 mile north-west of the Enterprise Bridge across Lake Oroville. Foothill Woodland (destroyed). T19N R6E NW/S6. 229 Comment
  CHSC66359  Ammannia robusta Vernon H. Oswald 1996-6-20 7825 Butte Sacramento National Wildlife Refuge, Llano Seco unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. 33 Comment
  JEPS102416  Ammi majus Lowell Ahart 2001-6-13 8814 Butte Sides of the dirt road south and east of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) SW of Gridley. 22 Comment
  CAS-BOT-BC213948  Amsinckia A. A. Heller 1921-5-9 13551 Butte Field above Centerville Comment
  UC726069  Amsinckia eastwoodiae A. A. Heller 1941-3-16 15888 Butte near Pentz (along grain field near the junction of the Cherokee Road with Paradise-Stirling City Road, opposite Cattle Corral) Comment
  CHSC31125  Amsinckia intermedia Howard Paul 1980-4-6 3 Butte Along the s rim of Butte Creek canyon, ca. 2.5 mi e of Chico, on the Skyway. 152 Comment
  CHSC93481  Amsinckia intermedia Lowell Ahart 2006-5-8 12599 Butte Steep bank on the east side of a small stream, about 50 yards east of the fence and reservoir, about 2 1/4 miles west of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 296 Comment
  UC1178254  Amsinckia intermedia Francia Chisaki 1956-4-18 677 Butte 7.2 mi s Tehama-Butte County line Comment
  JEPS104334  Amsinckia lycopsoides Lowell Ahart 2003-4-10 10064 Butte On the e rim of South Table Mountain, ca 2 1/2 mi (air) n of Oroville. 332 Comment
  RSA0089739  Amsinckia lycopsoides L. P. Janeway 2006-6-30 8561 Butte Cascade Range Foothills. East edge of city of Chico; northwest side of Humboldt Road, 2.4 km northeast of Bruce Road. 149 Comment
  UC726542  Amsinckia lycopsoides A. A. Heller 1942-4-5 16417 Butte 8 mi n Chico (1/2 mi e of junction of Cohasset road with U.S. 99E) Comment
  POM90768  Amsinckia menziesii var. menziesii A. A. Heller 1914-4-21 11309 Butte Chico. Comment
  CHSC97535  Andropogon virginicus var. virginicus L. P. Janeway 2007-8-6 9154 Butte Northern High Sierra Nevada. Plumas National Forest; Hughes Place, at head of eastern side drainage of Chino Creek and near head of Jack Creek, at break between Chino Ridge and Swayne Hill; 3.5 km north of mouth of French Creek at North Fork Feather River arm of Lake Oroville. 776 Comment
  JEPS120154  Andropogon virginicus var. virginicus Lowell Ahart 2012-10-20 18505 Butte On the south side of Big Chico Creek, about 100 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC28501  Angelica breweri M. S. Taylor 1979-7-21 2154 Butte Scattered along trail below Humboldt Peak, on Humboldt Summit. 1981 Comment
  SEINET10454783  Angelica californica Mary Susan Taylor 1980-9-12 Taylor 3335 Butte T24N R3E nw sec 21, Paradise quad. W side of Hwy 32, ca. 3 mi N of Forest Ranch, near Forest Ranch Fire Control Station; Yellow PIne Forest. 975 Comment
  CAS-BOT-BC77281  Antennaria microphylla Lowell Ahart 1985-6-17 5048 Butte 4 miles south-east of Feather Falls, along the dirt road on Fields Ridge 792 Comment
  CDA14338  Anthriscus caucalis Harrie D. Riley 1995-4-19 Butte Muir and Kennedy avenues, Chico. 0 Comment
  CHSC108828  Anthriscus caucalis Lowell Ahart 2012-4-17 17871 -A Butte On the west side of Gridley Road, about 1/8 mile southeast of the bridge over the Feather River, about 2 miles west of Highway 70. 28 Comment
  UC336555  Antirrhinum cornutum Edw. L. Greene 1890-6-27 Butte Chico Comment
  UCD80764  Antirrhinum subcordatum CNPS SN Foothill Team 2006-3-1 Survey Butte CSU Chico, Big Chico Creek Ecological Reserve. Comment
Read comments Jun 5 2011
  CHSC28779  Antirrhinum vexillo-calyculatum subsp. intermedium J. D. Jokerst 1979-9-2 335 Butte Humbug Road, 2.0 mi. N. of Centerville Cemetary. 457 Comment
  CHSC97380  Antirrhinum vexillo-calyculatum subsp. intermedium Paul Maslin 2006-7-7 36 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). Growing on disturbed soil at edge of Chico Canyon Road. UTM: 10609506E 4410723N. 335 Comment
  JEPS87614  Antirrhinum vexillocalyculatum subsp. intermedium Lowell Ahart 1994-10-16 7564 Butte about 2 air mi n and 3.5 mi e Forbestown (about 0.75 mi sw of the Forbestown Reservoir Dam, along s side of dirt rd to the Forbestown Reservoir, near Woodleaf Creek) 762 Comment
  CHSC101085  Aphanes occidentalis Lowell Ahart; John Dittes 2009-3-20 15504 Butte Open area along the the Guardian Rock Trail, about 150 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Chico. 407 Comment
  CHSC34076  Aphyllon epigalium subsp. epigalium M. S. Taylor 1981-5-29 3814 Butte Chico Ridge, ca. 0.5 mi n of 22N31, ca. 3 air mi se of Pulga. 853 Comment
  CDA39737  Apocynum androsaemifolium Vernon H. Oswald & Lowell Ahart 1998-8-11 9470 Butte Four Trees-Coyote Gap Road 1.3 miles west of Four Trees. Comment
  RSA0126413  Arabis glabra H. F. Copeland 1931-6-10 1519 Butte Jonesville; Colby Canyon. Comment
  POM180839  Arceuthobium abietinum Unspecified 1928-8-14 759 Butte Neighborhood of Jonesville. Near Butte Creek, above Jonesville. 1524 Comment
  CAS-BOT-BC409922  Arceuthobium campylopodum Lewis S. Rose 1931-1-2 s.n. Butte Bangor Comment
  RSA629064  Arctostaphylos Jon E. Keeley 1983-6-27 7818 Butte Highway 70 and Magolia Pentz Road. Comment
  RSA633010  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27447 Butte East of Chico, Cohasset Road. 170 Comment
  SEINET11987374  Arctostaphylos manzanita R. A. Schlising 1974-1 3157 Butte along Hwy 32, 9.4 mi NE of junction with Hwy 99 in Chico Comment
  SEINET11989223  Arctostaphylos manzanita J. T. Howell 1975-1 51105 Butte about 2 mi from Paradise on Skyway to Chico 396 Comment
  CHSC100793  Arctostaphylos manzanita subsp. manzanita Lowell Ahart; John Dittes, Steve Green 2009-1-17 15468 Butte On the north side of Humboldt Trail, about 50 yards south of Guardian Rock Trail, Upper Bidwell Park, about 300 yards west of Highway 32. 330 Comment
  CHSC109105  Arctostaphylos manzanita subsp. manzanita Lowell Ahart 2012-3-23 17774 Butte West edge of a small opening, about 100 yards south of the intersection of Guardian Trail and Ten Mile House Road, about 1/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. 437 Comment
  CAS-BOT-BC24298  Arctostaphylos mewukka A. A. Heller 1928-2-22 14476 Butte Near Forest Ranch Comment
  CHSC99888  Arctostaphylos mewukka James I. Mallory 1969-12-2 363 Butte 1 mile NW of Swain Hill, 1 mile WSW of Quartz Hill, 50 ft east of Grubbes Creek Road. 1219 Comment
  UC202367  Arctostaphylos patula H. M. Hall July 1914 9808 Butte near Jonesville 1645 Comment
  UCD52628  Arctostaphylos viscida subsp. mariposa J. I. Mallory 1968-7-1 295 Butte 4 miles south of Brush Creek Ranger Station, Plumas National Forest, Butte County, California. 640 Comment
  CAS-BOT-BC48254  Arctostaphylos viscida subsp. viscida Lowell Ahart 1990-3-9 6412 Butte About 1/4 mile south of the Feather River, about 4/10 mile west of Pacific Heighs Road, 30 Comment
  CHSC32651  Arctostaphylos viscida subsp. viscida M. S. Taylor 1981-3-18 3430 a Butte Ridge NNW of Sawmill Peak, off Jordan Hill Rd, ca. 1 air mi NE of Magalia. 701 Comment
  JEPS115233  Arctostaphylos viscida subsp. viscida Lowell Ahart, John Dittes 2009-3-20 15517 Butte Open area along the Guardian Rock Trail, about 150 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Chico 407 Comment
  CDA31420  Aristida dichotoma L. Ahart, Vernon Oswald 2000-8-5 8624 Butte Above seeps on bare granite, on the north side of Bean Creek Road, about 1/4 mile southeast of Little Bald Rock, about 4 miles (air) northeast of Madrone Lake, about 13 miles (air) northeast of Oroville Comment
  SEINET8521979  Aristida oligantha Kelly W. Allred 1991-1 5479 Butte outskirts of Oroville along hwy 70, dry roadside 108 Comment
  CAS-BOT-BC146313  Aristida ternipes var. gentilis J. D. Jokerst 1985-11-6 2590 Butte South of the unnamed creek (first canyon south of Big Chico Creek, future site of Canyon Oaks development), due east of city of Chico. 121 Comment
  CAS-BOT-BC400418  Aristolochia californica Jeanne McFarland; Kathie Meyer; Anne Mullenniex 1995-4-9 26 Butte E of Chico off of Skyway Blvd, 1.0 mi. north on Honey -Run Rd. 381 Comment
  CHSC108862  Aristolochia californica Lowell Ahart 2012-2-22 17756 Butte Climbing on a fence, along the short trail to Ten Miles House Road, about 50 feet from Highway 32, about 9 miles northeast of Chico. 469 Comment
  UC171429  Artemisia douglasiana A. A. Heller 1913-9-12 11135 Butte on Big Chico Creek (Chico) Comment
  UC726606  Artemisia douglasiana A. A. Heller 1916-9-23 12661 Butte near Forest Ranch; Sierra foothills Comment
  SEINET10904995  Artemisia douglasiana Mary Susan Taylor 1979-9-28 Taylor 2198 Butte Butte County line at Hwy 70, between boundry and Arch Rock tunnel; granitic soils and dome outcrop. 488 Comment
  SEINET10507281  Arundo donax Mary Susan Taylor 1975-10-3 Taylor 936 Butte Ca. 1/4 mile N of the Washout, between River Road and the Sacramento River, ca. 10 mi W of Chico. Riparian Woodland and sloughs, wet and humid. 37 Comment
  UC436307  Asclepias cordifolia E. B. Copeland July, 1930 Butte Jonesville 1600 Comment
  CHSC38265  Asclepias speciosa Vernon Oswald. 1983-6-14 682 Butte Upper Bidwell Park, Chico, 100 ft. e of the turn-around at the e end of Upper Park Rd. 207 Comment
  CAS-BOT-BC68884  Aspidotis californica Lowell Ahart 1966-3-13 s.n. Butte Near Enterprise 213 Comment
  CHSC23658  Aspidotis californica M. S. Taylor 1976-4-24 1073 Butte On Big Bald Rock, ca. 1/4 mi w of Bald Rock Rd, ca. 3 mi e of Lake Madrone, ca. 13 mi ne of Oroville. 997 Comment
  CHSC32144  Aspidotis californica L. Ahart 1975-4-1 734 Butte Along Ponderosa Way, near Feather Falls. 365 Comment
  CHSC39502  Aspidotis californica Lowell Ahart 1983-5-28 4023 Butte About 1/4 mile south of the over-look to Feather Falls, about 5 1/4 miles north of the town of Feather Falls. 600 Comment
  CHSC11795  Aspidotis densa E. B. Copeland 1929-7-13 328 Butte Jonesville. 1700 Comment
  CHSC86436  Aspidotis densa Jenny Marr 1994-6-13 84 Butte Located in Northern Sierra Nevada, north of the town of Magalia, on an exposed serpentine outcrop belonging to LNF. Site approx. 0.3 air miles north of Magalia Reservoir. 759 Comment
  RSA4658  Aspidotis densa E. B. Copeland 1929-7-13 328 Butte Jonesville 1700 Comment
  CAS-BOT-BC65911  Aspidotis densa Clarence R. Quick 1952-7-1 52 -132 Butte at junction of Mill Creek Road and Feather River Highway (Pulga) Comment
  SEINET10938031  Aster chilensis var. invenustus Mary Susan Taylor 1979-10-3 Taylor 2220 Butte T23N R3E center of E eighth of sec 33. Riparian Woodland in Butte Creek Canyon, ca. 1/4 mi upstream from bridge crossing Butte Creek at Helltown Road, ca. 7 mi E of Honey Run Covered Bridge. 244 Comment
  SDSU6298  Aster hesperius D. F. Howe 1960-9-20 2987 Butte North of Feather River, 28 miles from Oroville. 518 Comment
  CHSC827  Astragalus gambelianus L. Nelson 1935-5-7 Butte Covered Bridge on Butte Creek. 108 Comment
  JEPS115812  Astragalus gambelianus Lowell Ahart 2009-4-26 15631 Butte In the middle and on the north side of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 311 Comment
  UC1506099  Astragalus gambelianus Robert T. Clausen 1963-3-22 63016 Butte Oroville Sugarloaf Peak, Campbell Hills, Sacramento River drainage (Campbell Hills, se slope Sugarloaf Peak, Sacramento River drainage, Sacramento Valley) 150 Comment
  SEINET7042706  Astragalus gambelianus A. G. Vestal 1963-5-9 s.n. Butte Route 99E 11.8 miles north of Chico. Nelson quadrangle UTM Zone 10, 605211mE, 4382252mN. Comment
  CAS-BOT-BC192799  Astragalus pauperculus A. A. Heller 1914-4-13 11286 Butte Chico-Oroville road 11 miles from Chico Comment
  CHSC59315  Astragalus pauperculus J. L. Guardino 1992-3-23 1 Butte Paradise, 1/4 mi s of Circle Dr. terminus. 472 Comment
  CHSC40385  Athyrium filix-femina var. cyclosorum Lowell Ahart 1985-7-24 5149 Butte East of the dirt road to Forbestown Res., about 2 1/2 miles north-east of Forbestown. 868 Comment
  UC398876  Athyrium filix-femina var. cyclosorum E. B. Copeland 1929-7-29 326 Butte Jonesville 1600 Comment
  CHSC28901  Athysanus pusillus M. S. Taylor; J. Jokerst 1980-2-23 2318 Butte Ca. 1/4 mi n of Neal Rd, on bluffs overlooking Nance Canyon, ca. 4 mi sw of Paradise. 198 Comment
  JEPS116033  Athysanus pusillus Lowell Ahart, Josephine Guardino, Steve Green 2009-2-20 15488 Butte On the south slope of a ridge about 150 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 364 Comment
  UCR88748  Atriplex heterosperma Lowell Ahart 1981-11-6 3221 Butte Sacramento Valley, Gray Lodge, c. 12 mi. SW of Gridley. Deep ditch on north side of road near entrance to waterfowl management area headquarters 35 Comment
Read comments Jan 6 2008
  CHSC34771  Atriplex serenana L. Ahart 1981-10-6 3218 Butte Near entrance to Graylodge Waterfowl Mgmt HQ, just w of Pennington Rd, ca. 12 mi sw of Gridley. 35 Comment
  CHSC46432  Avena barbata Lowell Ahart 1989-5-10 6216 Butte Near Lake Oroville, about 1/10 mile north-west of the West Branch Bridge across Lake Oroville. 289 Comment
  CHSC110145  Avena fatua L. P. Janeway 2012-5-2 10812 A Butte Cascade Range Foothills. Upper Bidwell Park, Chico; southeast-facing slope +-overlooking Bear Hole on Big Chico Creek, between Middle Trail and Upper Trail. 166 Comment
  CHSC117592  Avena fatua L. P. Janeway 2016-6-2 12106 Butte Northern High Sierra Nevada. Plumas National Forest; Field Ridge Meadow; on the ridge between South Fork Feather River and Sucker Run; 1.5 air-km east-northeast of Ponderosa Reservoir. 872 Comment
  UCR237332  Avena fatua George K. Helmkamp, E. A. Helmkamp 2012-4-14 18742 Butte Northern Sacramento Valley, Robinsons Corner, Simpson Rd, just east of junction of East Gridley Road and CA-70 23 Comment
  CHSC116268  Azolla filiculoides Lowell Ahart 2015-11-18 20652 Butte About one mile south of Palm Avenue, about 2 miles southeast of the intersection of Palm Avenue and Larkin Road, about 5 miles (air) northeast of Gridley. 26 Comment
  JEPS102437  Azolla filiculoides Lowell Ahart 2011-1-26 8718 Butte On the east side of the parking lot, on the north side of Rutherford Road, about 1/4 mile west of Pennington Road, Gray Lodge Waterfowl Management Area, about 6 miles (air) SW of Gridley. 21 Comment
  CHSC43270  Baccharis douglasii Lowell Ahart 1987-8-30 5871 Butte Near Highway 70, about 1/4 mile south of Clark Road (191), about 1/2 mile northeast of Oroville Chico Highway (149). 91 Comment
  CHSC31585  Baccharis salicifolia L. Ahart 1973-11-1 287 Butte On gravel bars in North Honcut Creek. Near Honcut. 45 Comment
  SD122583  Baccharis salicifolia Lowell Ahart 1984-10-14 4814 Butte North Honcut Creek, ca. 3/4 miles north and 2 miles east of Honcut, on Joie Osgood property. 39 Comment
  UC1056314  Bacopa repens John Tucker 1953-8-28 Butte Biggs Rice Experiment Station Comment
  CHSC4672  Balsamorhiza deltoidea R. Carter 1966-4-11 335 Butte Found ca. 1 mi E of Bidwell Bar along RR tracks, just W of RR bridge over S Fork. 152 Comment
  UC600734  Balsamorhiza sagittata H. F. Copeland 1932-6-29 Butte Jonesville 2000 Comment
  SEINET10479072  Bassia hyssopifolia Mary Susan Taylor, Lowell Ahart 1982-10-11 Taylor 5145 Butte T17N R1E n/ne sec 24. Pennington quad. Graylodge Wildlife Refuge, vicinity of check-in station, sw jct of Pennington & Rutherford Rds, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  JEPS98557  Bellardia trixago Lowell Ahart 2000-4-22 Butte 10 mi SW of Oroville (S side of Hwy 162, about 1/4 mi W of Hwy 99) 32 Comment
  CHSC21365  Berberis aquifolium M. S. Taylor 1975-4-8 454 Butte N side of Chemistry Bldg, California State University, Chico. 60 Comment
  CAS-BOT-BC75550  Berberis dictyota Volney Rattan 1880-1-1 s.n. Butte Brownsville. Comment
  CHSC5962  Berberis thunbergii M. MacArthur 1968-6-17 178 Butte Location: ca. 10 ft. NW of Auditorium SW entrance, Chico State College campus. 60 Comment
  CHSC42115  Bergia texana Lowell Ahart 1986-11-14 5473 Butte About 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville. 36 Comment
  CAS-BOT-BC102165  Bidens John Thomas Howell 1959-9-20 34665 Butte Lower foothills, eastern outskirts of Oroville 60 Comment
  CHSC26659  Bidens frondosa M. S. Taylor 1977-8-16 1503 Butte In Clear Creek, Butte College Campus, ca. 15 mi S of Chico. 60 Comment
  JEPS110125  Bidens frondosa Lowell Ahart 2006-9-28 13363 Butte On the east side of the North Fork of the Feather River, on the west side of Highway 70, about 50 yards southwest of the Shady Rest Area south of the Arch Rock Tunnel 445 Comment
  JEPS120603  Bidens frondosa Lowell Ahart 2013-11-17 19259 Butte McCabe Creek, below the high water line of Lake Oroville, about 5/8 mile southwest of the enterprise Bridge across Lake Oroville. Comment
  UC171397  Bidens frondosa A. A. Heller 1913-9-12 11134 Butte on Big Chico Creek, Chico Chico, Big Chico Creek Comment
  CHSC94060  Bistorta bistortoides R. D. Fischer 2004-6-20 783 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. Plants growing on the moist soil of the eastern side of Chico Meadows. 1371 Comment
  NY31001  Blennosperma californicum R. M. Austin s.n. Butte Mesa, near Little Chico Creek Comment
  CAS-BOT-BC100690  Blennosperma nanum var. nanum A. A. Heller 1914-2-16 11180 Butte Hills twelve miles from Chico on the Chico - Oroville Road Comment
  CHSC43458  Boechera arcuata Lowell Ahart 1978-4-19 1650 Butte At the overlook at Feather Falls, about 6 miles north of the town of Feather Falls. 548 Comment
  UCD114121  Boechera arcuata Robert E. Preston 1985-4-4 509 Butte Bear Ranch Creek, south of Hwy 70, along trail between hwy and falls. 463 Comment
  CHSC28769  Boechera breweri subsp. shastaensis J. D. Jokerst; D. Greenstein, T. B. Devine 1979-3-20 403 Butte On the sides of cliffs on the edge of Table Mountain, adjacent to the waterfalls of the S. fork of Coal Cr. Canyon. 365 Comment
  CAS-BOT-BC16035  Boechera breweri subsp. shastaensis J. D. Jokerst 1979-3-18 0176 Butte Upper rimrock south of Big Chico Creek. Comment
  CAS-BOT-BC16036  Boechera breweri subsp. shastaensis J. D. Jokerst 1979-5-21 0259 Butte 100 meters southeast of Little Chico Creek. 243 Comment
  CHSC33633  Boechera platysperma R. E. Preston; R. A. Schlising, R. Banchero, D. Burk 1981-7-21 112 Butte N ridge of Snow Mtn, ca. 7.2 km se of Jonesville. 2050 Comment
  UC478515  Boechera platysperma E. B. Copeland 1931-6-19 643 Butte Jonesville 1550 Comment
  SEINET10939932  Boisduvalia densiflora Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4120 Butte T20N R8E ne sec 9. Along Ponderosa Way (Big Ridge Rd), ca. 2 mi se of the jct with Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 500 m. 500 Comment
  CHSC110354  Bolboschoenus fluviatilis B. Castro; Margie Graham 2006-8-24 1601 Butte Sacramento Valley Ca 1 mi W of Hwy 99 and 3 mi NE of Richvale, just S of the Western Canal siphon in Cherokee Canal. On E side of canal ca 100 ft S of dirt road crossing the canal. 35 Comment
  CHSC46318  Bolboschoenus fluviatilis Vernon Oswald 1989-5-15 3767 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch). In a marshy depression near Butte Creek. 18 Comment
  UC600573  Botrychium simplex H. F. Copeland 1931-6-6 Butte Jonesville, below cabin Comment
  JEPS94330  Boykinia major Lowell Ahart 1997-8-1 7796 Butte about 8 air mi ne of Stirling City (on bottom of of Little Kimshew Creek, about 1/4 mi e of Table Mountain); Little Kimshew Creek 1371 Comment
  CDA20151  Boykinia occidentalis B. Smith August 1996 s.n. Butte Plumas National Forest; 1.5 mi S of Feather Falls along Owl Creek. 0 Comment
  CHSC43742  Boykinia occidentalis Vernon Oswald 1983-6-17 703 Butte Upper Bidwell Park, Chico, ca. 200 ft w of Day Camp on the s side of Chico Creek. Growing on a vertical cliff 5 - 10 ft above the summer level of the creek. 91 Comment
  CDA1767  Brachypodium distachyon T. C. Fuller 1959-7-6 s.n. Butte Hwy 40A at bridge over the West Branch, Feather River. 0 Comment
  CHSC74036  Brachypodium distachyon B. Castro 1996-5-18 661 Butte Ca 5.5 air mi SE of Town of Paradise, in bottom of unnamed canyon just S of Neal Road, ca 60 ft N of creek channel directly under transmission lines. 85 Comment
  CDA3607  Brassica napus L. Ahart 2001-5-1 8739 Butte On the sides of the dirt road east of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) southwest of Gridley. Comment
  CHSC38059  Brassica oleracea var. gemmifera R. E. Preston 1982-3-25 198 Butte In a garden in Chico. Comment
  CHSC4407  Briza minor R. L. Smith 1966-5-10 12 Butte Butte Creek Canyon 4 mi. e of Skyway. Comment
  SEINET10967594  Briza minor A. Arthur Heller, H. E. Brown 1902-5-6 Heller 5475 Butte Berry Canyon (near Clear Creek). Comment
  CHSC78756  Brodiaea coronaria subsp. coronaria L. P. Janeway 2000-5-14 6722 Butte Sacramento Valley. East side of Pine Creek Road 0.3 mi north of Pine Creek. 56 Comment
  UC768718  Brodiaea coronaria subsp. coronaria R. F. Hoover 1936-5-20 1154 Butte 10 mi sw Oroville Comment
  CAS-BOT-BC478966  Brodiaea coronaria subsp. coronaria A. A. Heller 1914-5-8 11382 Butte Clear Creek school house Comment
  CAS-BOT-BC482929  Brodiaea elegans subsp. elegans A. A. Heller; H. E. Brown 1902-5-8 5492 Butte Berry Canyon (near Clear Creek) Comment
  CHSC2417  Brodiaea minor R. Carter 1965-6-15 229 Butte Found 0.5 mi. N of Derrick Rd. on Old Cherokee Rd. Along W side of road, North Table Mt., ca. 8 mi. N of Oroville. 335 Comment
  JEPS5507  Brodiaea minor W. L. Jepson 1934-5-4 16621 Butte 2.5 mi ne Cana Comment
  POM264783  Brodiaea minor Lincoln Constance 1941-5-28 2825 Butte 3 miles SW of Paradise, Sierra Nevada foothills. 305 Comment
  SD48511  Brodiaea minor E. K. Balls 1957-5-23 22532 Butte On drying clay and open grassland, U.S. Highway 99, 1.7 miles northwest from junction with road from Pentz. 91 Comment
  UC725523  Brodiaea nana A. A. Heller 1927-5-3 14364 Butte ten mi n Chico Comment
  SEINET10833791  Brodiaea purdyi A. Arthur Heller 1941-5-24 Heller 16151 Butte Rather plentiful in thin clay soil overlying flat volcanic rocks on the Clark Road, 2 miles below Paradise Oak Belt of the Upper Sonoran Life Zone. Comment
  UC600590  Bromus carinatus var. carinatus H. F. Copeland 1931-6-10 Butte between Willow Creek and Colby Creek (Jonesville); Jonesville 1676 Comment
  CAS-BOT-BC148836  Bromus carinatus var. marginatus Vernon Oswald; Lowell Ahart 1987-7-1 3088 Butte Scotts John Road at Big Rock Meadow 1.0 mile north of the road connecting Humboldt and Humbug Roads, ca. 2.5 miles east northeast of Jonesville. 1780 Comment
  JEPS107777  Bromus catharticus Lowell Ahart 2005-5-2 11767 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico 25 Comment
  JEPS110453  Bromus ciliatus Lowell Ahart 2006-7-16 12975 Butte West edge of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  CAS-BOT-BC155944  Bromus commutatus Lowell Ahart 1988-5-30 6031 Butte About 1/12 mile north of the bridge across the North Fork of the bridge across the North Fork of the Feather River, along Poe Power House Road, about 2 miles southeast of Jarbo Gap. 335 Comment
  SEINET11665618  Bromus commutatus Unknown 1983-1 4143 Butte along Ponderosa Way, ca 0.5 mi S of East Fork of Canyon Creek, ca 13.5 mi NE of Oroville 550 Comment
  CHSC56624  Bromus diandrus T. B. Devine 1980-3-10 605 Butte Chico Sewage Treatment Plant. Comment
  CHSC102791  Bromus laevipes Lowell Ahart 2009-5-30 15780 Butte About 120 yards north of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northeast of Chico. 269 Comment
  SEINET3923094  Bromus laevipes Lowell Ahart, Peter Ahart 1984-6-10 4699 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest.; 0 700 Comment
  SEINET11688365  Bromus laevipes Unknown 1985-1 4987 Butte E of dirt road, ca 1.5 mi NE of Concow Reservoir, NE of Oroville 732 Comment
  CHSC75427  Bromus madritensis subsp. rubens Jennifer Slater 1997-4-27 41 Butte At the Wurlitzer addition of the Vina Plains Preserve, west of Highway 99, approx. 10 miles north of Chico. 67 Comment
  CHSC35748  Bromus tectorum R. E. Preston 1982-5-18 283 Butte Roadside. Forbestown Diversion Dam. 548 Comment
  CHSC41431  Bromus tectorum Lowell Ahart 1986-5-20 5279 Butte Near the edge of the road that goes to the Forbestown Reservoir, about 1 mile south-west of the Forbestown Reservoir, about 3 1/2 miles north-east of Forbestown. 609 Comment
  UC1594605  Bromus tectorum Lowell Ahart 1992-5-6 6748 Butte about 4 mi s of Oroville (along w side of Lone Tree Road, about 1/4 mi s of intersection of Powerhouse Hill Road and Lone Tree Road); Lone Tree Road 60 Comment
  SEINET10515117  Bromus tectorum Lowell Ahart 1966-5-20 Ahart 5279 Butte On dry bare soil, near the edge of the road that goes to the Forbestown Reservoir, about 1 mile SW of the Forbestown Reservoir, about 3 1/2 miles NE of Forbestown. Yellow Pine Forest. 610 Comment
  UC398886  Bromus vulgaris E. B. Copeland 1929-7-22 336 Butte Jonesville 1500 Comment
  UCD60245  Bromus vulgaris E. B. Copeland 1929-7-22 59 Butte Butte Co. Comment
  CHSC43260  Calamagrostis canadensis Lowell Ahart; Tim Devine, Vern Oswald 1987-10-17 5917 Butte Along the East Fork of Last Chance Creek, about 1/2 mile north-west of Jones Meadow. 1676 Comment
  CHSC59040  Calamagrostis canadensis Lowell Ahart 1992-7-21 6797 Butte On the sides of a snow lake, on the south side of Coon Hollow, about 2 (air) miles north-east of Philbrook Reservoir. 1737 Comment
  CHSC2396  Calandrinia ciliata var. menziesii R. Carter 1965-3-13 163 Butte Found ca. 7 mi E of Oroville at 6120 W. S. R., on S side of house beside water faucet. 274 Comment
  JEPS113280  Callitriche heterophylla var. bolanderi Lowell Ahart 2007-4-16 13672 Butte In shallow water of a small wash, about 100 yards east of North Honcut Creek, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville 63 Comment
  CHSC43850  Callitriche stagnalis Vernon Oswald 1987-5-3 2364 Butte Rancho Bosquejo. East side of the Sacramento River at the w end of Cana Hwy (Feenstra's Riverview Orchard). In a pond. 48 Comment
  SEINET10531072  Calocedrus decurrens Mary Susan Taylor, Lowell Ahart 1981-8-15 Taylor 4182 Butte T25N R4E se 1/4 se 1/4 sec 29. Paradise NE quad. Weed lot on N side of the Skyway in Inskip. Yellow Pine Forest. 4800 ft. 1463 Comment
  CHSC116969  Calochortus albus Danielle Gee 2013-4-27 Butte Dark Canyon Road, about 2.5 miles off Hwy 70. 400 Comment
  CHSC3306  Calochortus albus M. L. Hillier 1966-5-7 Butte 2.5 miles e. of covered bridge. Comment
  CAS-BOT-BC487509  Calochortus albus Carl B. Wolf 1937-5-13 8654 Butte Sierra Nevada Foothills, W. side of So. Honcut Creek, 2 6/10 mi. E. of Bangor 213 Comment
  CHSC49643  Calochortus coeruleus Vernon Oswald 1983-6-22 745 Butte Near Humboldt Rd. (to Butte Meadows) 2.1 mi n-e of Calif. Hwy 32. 1310 Comment
  CAS-BOT-BC489971  Calochortus leichtlinii A. A. Heller 1915-6-10 11953 Butte Little Summit in the Sierra Nevada, in the yellow pine belt 1371 Comment
  CHSC21264  Calochortus luteus M. S. Taylor 1974-5-5 74 Butte Ca. 200 yds w of Horseshoe Lake, Upper Bidwell Park Chico. 91 Comment
  CHSC2925  Calochortus luteus W. Fitzwater 1958-4-26 Butte Humboldt Rd., Chico area. Comment
  CAS-BOT-BC491857  Calochortus luteus Carl B. Wolf 1937-6-12 2851 Butte Northern Sierra Nevada Foothills, 11 mi. below Magalia on Oroville Road 152 Comment
  POM169357  Calochortus luteus A. A. Heller, H. E. Brown 1902-5-8 5494 Butte Berry Canyon (near Clear Creek) Comment
  CHSC3827  Calochortus monophyllus R. L. Adams 1964-4-2 67 Butte S. roadside 1/2 mi. W. Ten Mile House on Hwy. 32, 7 mi. E. Chico. Comment
  CHSC46786  Calochortus monophyllus Neal Schaeffer 1982-4-18 11 Butte Between Pentz Rd and Kunkle reservoir, ca. 20 m from road, 50m n of reservoir access road. 450 Comment
  RSA32826  Calochortus monophyllus A. A. Heller 1940-4-29 15565 Butte Edge of thickets on the Clark Road about 2 miles west of Paradise Comment
  SEINET10872530  Calochortus monophyllus Mary Susan Taylor 1981-4-27 Taylor 3558 Butte T21N R5E se sec 24, Brush Creek quad. Ridge between 21N33 and 21N80, ca. 1 mi SW of Bald Rock Rd, ca. 0.5 mi N of Zink Rd, ca. 2 mi SW of Brush Creek. Yellow Pine Forest; 3300 ft. 1006 Comment
  CHSC27343  Calochortus superbus T. B. Devine 1977-5-5 410 Butte Beside Humbug Road, 1.2 mi ne of Centerville. 350 Comment
  RSA53632  Calochortus superbus Marion Ownbey, Gerald B. Ownbey 1946-6-25 2943 Butte Along Bean Creek Road Comment
  CHSC51943  Calochortus tolmiei J. Marr 1988-3-19 6 Butte 5 ft. on E side of Deadwood Rd, 1/4 mi N from Hwy 70, 20 mi N of Oroville. Comment
  CAS-BOT-BC175754  Caltha leptosepala Alice Eastwood 1912-8-22 1841 Butte Meadows, Lassen Butte Comment
  CAS-BOT-BC273296  Calycadenia fremontii Marc Hayes; Joan Warner 1978-5-12 s.n. Butte North bank of Pine Creek about 11 miles nw. of Chico; ca. .3 mi W of Pine Creek's intersection w/ Hwy 99 (Wurlitzer Ranch) Comment
  RSA0037495  Calycadenia multiglandulosa Lowell A. Ahart 2013-7-1 18817 Butte About 150 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/4 miles (air) southwest of Forbestown. 737 Comment
  CHSC40065  Calycadenia oppositifolia C. C. Parry 1882-5-1 188 Butte Chico. Comment
  UC1971667  Calycadenia oppositifolia 1977-7-6 2033 Butte Big Ridge Road, 2.3 mi SE of jct with Oroville - Quincy Hwy, S of Berry Creek, on runoff area just above road (=GDC 699A) 610 Comment
  UC1971677  Calycadenia oppositifolia 1977-7-5 2026 Butte 0.6 mi S of Chico Municipal Airport on Cohasset Road 61 Comment
  SEINET10473676  Calycadenia oppositifolia Mary Susan Taylor 1979-6-12 Taylor 2294 Butte Magalia serpentine area down to Feather River. With J.D. Jokerst & L. Ahart. 671 Comment
  CHSC45646  Calycadenia spicata Vernon Oswald 1988-6-4 3354 Butte Harter's Cherokee Ranch located on the W side of Hwy 99 between Hwy 149 and Dry Creek. 53 Comment
  SEINET10535837  Calycanthus occidentalis Mary Susan Taylor 1981-7-10 Taylor 4065 Butte T22N R5E ne sec 6, Pulga quad. N side of Feather River Hwy 70 at Pulga bridge, on large serpentine outcrop, ca. 20 mi NE of Oroville. 1600 ft elev. 488 Comment
  UC436306  Calyptridium monospermum E. B. Copeland 1930-6-28 Butte Jonesville, Scotch John Jonesville 1750 Comment
  CHSC33654  Calystegia atriplicifolia subsp. buttensis R. A. Schlising 1974-9-5 3155 Butte Along Skyway near De Sabla, 0.4 mi S of junction with Humbug Road leading to Nimshew. Comment
  CHSC95085  Calystegia atriplicifolia subsp. buttensis L. P. Janeway 2006-6-25 8704 Butte High Cascade Range. Along Cohasset Ridge and Cohasset Road about 0.5 km southwest of Anderson Mill site and about 5.9 air km north-northeast of Cohasset. 1128 Comment
  RSA754848  Calystegia occidentalis subsp. occidentalis L. Ahart 2009-5-30 15775 Butte North side of Ten Mile House Road, Upper Bidwell Park, about 3/8 air mile southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 380 Comment
  UC454113  Campanula prenanthoides Miss Kate Conger 1907-1 Butte Brush Creek Comment
  CHSC19943  Capsella bursa-pastoris M. S. Taylor 1975-3-25 419 Butte In field between 11th and 12th Sts, at end of Citrus Ave, Chico. Comment
  CHSC3246  Capsella bursa-pastoris Virginia Hagaman 1966-2-21 15 Butte 2 1/2 miles east of Butte Creek and west of 99E. Comment
  POM196110  Cardamine breweri E. B. Copeland 1929-7-15 368 Butte Jonesville. 1500 Comment
  JEPS98767  Cardamine nuttallii Dean W. Taylor 1997-3-13 15915 Butte Magalia; summit serpentine hill directly east of town 731 Comment
  CHSC24976  Cardamine oligosperma J. Cox 1976-3-10 42 Butte N. Table Mt. Ca. 300 yds. n of Cherokee Rd., 4.3 mi. ne of Oroville. 426 Comment
  CHSC33723  Cardamine oligosperma M. S. Taylor 1981-4-5 3498 Butte At end of Dark Canyon Rd near turnout and restroom, up from boat ramp to W Br Feather River, ca. 3.5 mi s of Big Bend Rds jct, ca. 5 air mi s of Jarbo Gap on Hwy 70. 304 Comment
  CHSC4152  Cardamine oligosperma R. Carter 1966-4-2 322 Butte Found ca. 7 mi. E of Oroville at 6120 Woodleaf St. Rt.; 300 yds. off Feathervale, behind house, in pasture. 243 Comment
  UC1609210  Cardamine oligosperma Vernon H. Oswald and Lowell Ahart 1993-3-24 5246 Butte n. of historical site of Pentz (on e. side of a secondary drainage entering Dry Creek 2 mi n. of Pentz Rd., e. side Dry Creek Canyon); Dry Creek Canyon, drainage entering Dry Creek 262 Comment
  SEINET11983098  Cardamine oligosperma Unknown 1978-1 4 Butte ca 125 ft S of Rock Creek 213 Comment
  CAS-BOT-BC38056  Cardamine pachystigma LeRoy Ellsworth Detling 1935-4-18 1634 Butte West Fork Feather River, 15 miles north of Oroville. Comment
  CAS-BOT-BC38057  Cardamine pachystigma LeRoy Ellsworth Detling 1935-4-18 1634 Butte West Fork Feather River, 15 miles north of Oroville. Comment
  CHSC82711  Cardamine pachystigma var. pachystigma L. P. Janeway; B. Castro 2002-3-27 7455 Butte Northern High Sierra Nevada. North slope of Big Bend Mountain about half way down to North Fork Feather River; 1.1 km south-east of mouth of China Gulch. Dirt road cutbank and adjacent forest slope. 549 Comment
  SEINET10585935  Carex abrupta Lawrence P. Janeway, Robert A. Schlising 1988-7-16 Janeway 3020 Butte The Carices of Butte county. T26N, R5E, Jonesville quad (15") NW1/4 of sec 21. Along Willow Cr, 1 mile W of Humbug Rd. On dry disturbed forest floor (Jeffery pine and white fir). With C. integra, C. fracta, C, jepsonii. 1798 Comment
  CHSC88224  Carex angustata Lowell Ahart 2004-8-2 11327 Butte Small bog in a large meadow, about 200 yards east of Keyser Creek, on the north side of the dirt County Road, about 3/4 mile (air) northeast of Oak Point, about 1/2 mile (air) west of Big Kimshew Creek, about 1 3/4 miles southeast of Bald Mountain. 1452 Comment
  SD469  Carex athrostachya E. B. Copeland 1929-7-28 607 a Butte Jonesville; forming large dense tufts by irrigation ditch. 1550 Comment
  CAS-BOT-BC19104  Carex aurea Lowell Ahart 1987-5-22 5678 Butte Near the dirt road, about 0.125 mile northeast of Camp 18, about 6.5 miles northeast of Feather Falls. 1219 Comment
  CHSC42822  Carex aurea L. P. Janeway 1987-6-20 2273 Butte Near Fall River, 3.0 mi north of the Feather Falls-Lumpkin Ridge Rd along the rd to Fall River and Cascade. 1013 Comment
  CHSC44693  Carex aurea L. P. Janeway; R. A. Schlising 1988-7-16 3025 Butte Large mdw at head of Willow Cr. 1935 Comment
  UC600699  Carex aurea H. F. Copeland 1920-8-1 171 Butte Jonesville Comment
  RSA4411  Carex aurea E. B. Copeland 1930-6-23 s.n. Butte Jonesville. 1500 Comment
  CHSC65785  Carex barbarae Vernon H. Oswald 1996-4-10 7345 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. Sacramento Valley. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On a levee bank on the S side of the ranch road at the N end of Tract 7.2, Sanctuary 1. 33 Comment
  OBI6420  Carex bolanderi Lewis S. Rose 1963-6-5 63140 Butte North Fork of Feather River, Arch Rock Tunnel 488 Comment
  RSA169396  Carex bolanderi L. S. Rose 1963-6-5 63140 Butte North Fork of Feather River, Arch Rock Tunnel. 488 Comment
  CHSC45047  Carex capitata Vernon Oswald 1987-5-11 2386 Butte Chico Meadows ca. 1 mi n of Butte Meadows. 1292 Comment
  SEINET4289436 Image available Carex cusickii L. Janeway, Gog, L 2008-1 3197 A Butte Pat's Meadow. Along Butte Creek, 0.6 mi. W of Cherry Creek Campground. Comment
  CAS-BOT-BC313736  Carex cyrtostachya P. F. Zika; B. Wilson; L. Ahart; L. Janeway 2011-8-5 25715 Butte Forest Rd 20N03 (Moreville Ridge Rd), 2 air miles SE of Sugar Pine Point, Pinkard Creek drainage, Northern Sierra Nevada highlands (n SNH) 1075 Comment
  CHSC107578  Carex cyrtostachya Lowell Ahart 2011-8-19 17639 Butte On the north side of a good forest road, about 1/2 mile north of the Lost Creek Reservoir dam, about 4 1/2 miles (air) north of Clipper Mills. 1266 Comment
  JEPS121376 Image available Carex cyrtostachya P. F. Zika, B. Wilson, L. Ahart, L. Janeway 2011-8-5 25715 Butte Forest Road 20N03 (Moreville Ridge Road), 2 air miles SE of Sugar Pine Point, Pinkard Creek drainage, W northern Sierra Nevada Highlands (n SNH). Comment
  CAS-BOT-BC34951  Carex densa Lowell Ahart 1980-5-12 2249 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC65470  Carex densa Vernon Oswald 1983-3-13 168 Butte Upper Bidwell Park, Chico, beside Upper Park Rd. 300 ft w of Parking Area N (Salmon Hole). 170 Comment
  JEPS120147  Carex divulsa subsp. divulsa Lowell Ahart 2012-4-30 17948 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, City of Chico. Comment
  CHSC43951  Carex feta Vernon Oswald 1988-4-18 3277 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. Marshy place along the edge of Dry Creek ca. 0.25 mi w of Hwy 99. 51 Comment
  CHSC44292  Carex fracta Vernon Oswald 1988-6-20 3408 Butte East of Humboldt Rd. 1.4 mi ne of Lomo. Along the edge of the W. Branch of Butte Creek at the bottom of a ravine. 1292 Comment
  SEINET7560147 Image available Carex gracilior Unknown 2003-5-8 7782 Butte Richardson Springs 7.5' quad. Sacramento Valley. North end of Chico, along Sycamore Creek 160 m west of Cohasset Road bridge. 56 Comment
  CDA14061  Carex hirtissima G. F. Hrusa, T. D. Wilfred 1997-5-1 13708 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Old growth Douglas-fir/mixed hardwoods. Low moist area near creek. Clumping. Uncommon here. Comment
  CHSC6658  Carex hirtissima Marilyn Lee 1968-4-19 116 Butte West side of Cherokee Road, 2 miles south-east of cemetary. Table Mt. Comment
  CHSC76350  Carex hoodii L. P. Janeway 1999-7-17 6506 Butte Along Scotts John Creek 0.2 mi north of the road that connects Humboldt Road and Humbug Road. 1749 Comment
  CAS-BOT-BC7558  Carex integra H. F. Copeland 1946-7-4 s.n. Butte Jonesville. Comment
  CHSC52912  Carex integra L. P. Janeway 1986-9-1 1829 Butte East end of Philbrook Reservoir. 1691 Comment
  CAS-BOT-BC94043  Carex inversa Peter F. Zika 2010-5-16 24827 Butte Baldwin Avenue near Spencer Avenue, Oroville, Ahart's station, Sacramento Valley (ScV) 65 Comment
  CHSC44689  Carex jonesii L. P. Janeway; C. A. Janeway 1986-9-13 1850 Butte Mdw along Humbug Summit Rd ca 1 1/2 mi SW of the summit. 1859 Comment
  CHSC45080  Carex jonesii V. Oswald; L. Ahart 1988-6-17 3404 Butte Pinkard Creek ca. 1.5 mi n of Lost Creek Reservoir. 1066 Comment
  POM183141  Carex jonesii H. F. Copeland 1929-6-10 1245 Butte Jonesville. 1524 Comment
  CHSC113421  Carex laeviculmis Lowell Ahart 2014-7-2 19537 Butte On the south side of the County Road, about one mile west of the intersection of County Road and Lumpkin Road, about 7 miles northeast of Feather Falls. 1260 Comment
  CHSC42690  Carex laeviculmis L. P. Janeway 1987-6-27 2342 Butte Along Little Kimshew Cr 0.7 mi north of the Concow Rd. 1508 Comment
  JEPS121976  Carex laeviculmis Lowell Ahart 2014-7-10 19608 Butte About 100 yards east of Memorial Spring and the Skyway, about a mile southwest of the intersection of Humbug Road and Philbrook Road, about 2 1/2 miles (air) northwest of Philbrook Reservoir. Comment
  CHSC77170  Carex lemmonii G. F. Hrusa; T. D. Wilfred 1997-7-3 13964 Butte Northern California, Sierra Nevada. NE side of upper end of Paradise Lake. Where last tributaries from E enter. [Lat./Long. on label is '39 52 N; 121 35 W']. 790 Comment
  JEPS104630  Carex lemmonii Lowell Ahart 2000-7-11 8569 Butte Seeps, on sides of a dirt road, ca 100 yd n of Lumpkin Ridge Road, upper w branch of Know-nothing Creek, ca 1 mi SW of intersection of Lumpkin Ridge Road, road to Fall River, and County Road, ca 4 mi (air) NE of Feather Falls. 1219 Comment
  CHSC83295  Carex luzulina L. P. Janeway; B. Castro 2002-7-7 7607 Butte High Cascade Range. Soggy sedge-dominated meadow below the head of Keyser Creek and just below the dirt road; 0.5 km east of Bald Mountain Lookout. 1695 Comment
  JEPS103108  Carex luzulina var. ablata L. P. Janeway, B. Castro 2002-7-7 7607 Butte High Cascade Range. Soggy sedge-dominated meadow below the head of Keyser Creek and just below the dirt road; 0.5 km east of Bald Mountain Lookout 1695 Comment
  CHSC12172  Carex multicaulis Lowell Ahart 1973-5-6 Butte Near Challenge. 762 Comment
  CHSC45057  Carex multicaulis Vernon Oswald 1984-4-9 1131 Butte Feather Falls Trail, 1.9 mi. from the trail head at the end of Bryant Ravine Rd. 487 Comment
  UCD40402  Carex multicaulis Rodney Gale Myatt 1971-6-13 725 Butte 1 mi. north of Inskip. Skyway Road, north of Paradise. Road between Butte Meadows and Magala. Comment
  UCD140541  Carex nervina L. P. Janeway; R. A. Schlising 1988-7-22 3056 Butte Coon Hollow Creek. 1920 Comment
  CHSC52248  Carex nudata L. P. Janeway 1987-7-4 2420 Butte Along West Branch Feather River at bridge 1.8 mi from Inskip. 1341 Comment
  CHSC77823  Carex praegracilis Lowell Ahart 2000-4-27 8330 Butte On the cut bank on the west side of Pennington Road, about 400 feet north of Rutherford Road, Gray Lodge Waterfowl Management Area, about 6 miles (air) southwest of Gridley. 21 Comment
  UCD140771  Carex praegracilis R. E. Preston 1982-4-4 215 Butte Gray Lodge wildlife management area. 18 Comment
  UCD169604  Carex scabriuscula Lowell Ahart 2012-7-1 18262 Butte About 3 1/2 miles (air) northeast of Belden. About 1/4 mile east of Caribou Road. 807 Comment
Read comments Aug 22 2021
  SEINET7575670 Image available Carex specifica Unknown 2004-7-24 8183 Butte Jonesville 7.5' quad, High Cascade Range, near Scotts John Creek at crossing of the road connecting upper Humboldt Summit Road and Humbug Summit Road. Comment
  JEPS102947  Carex subfusca L. P. Janeway 1995-7-16 4861 Butte 0.8 mi northwest of Oak Point; 0.8 mi east of Transfer Ridge; east side of Breakneck Canyon 1.5 mi north of Kimshew Creek; along Concow Road 8.2 mi east of West Branch Feather River 1402 Comment
  JEPS102954  Carex subfusca L. P. Janeway, B. Castro 2002-7-7 7621 Butte High Cascade Range. Along the County Road above the Discovery Creek and Last Chance Creek; 1.3 km north of Bald Mountain Lookout 1609 Comment
  UCD140909  Carex subfusca E. B. Copeland 1929-7-20 611 Butte Jonesville. 1500 Comment
  CHSC44990  Carex utriculata S. C. Morey 1983-8-3 689 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC45614  Carex utriculata L. P. Janeway 1988-7-2 2952 Butte Marsh/mdw at upper reach of Brush Creek, ca 1.5 mi S of 'town' of Brush Creek. 952 Comment
  JEPS122078  Carex vesicaria Lowell Ahart 2014-7-13 19668 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir Comment
  RSA739649  Carex whitneyi L. P. Janeway, Linus Gog 2008-7-19 9443 Butte Butte County: High Cascade Range, N side of Scotts John Creek at crossing of Road 26N27 (The connector betw Humboldt Road and Humbug Summit road). 1740 Comment
  CAS-BOT-BC19606  Carex xerophila B. Castro; Gail Kuenster 1989-5-29 307 Butte Ca. 0.1 mile north of junction Coutolenc Road and Skyway. On flat ledge between Coutolenc Road and old SPRR bed. 707 Comment
  CHSC47141  Carex xerophila B. Castro; Gail Kuenster 1989-4-29 307 Butte Ca 0.1 mi N of jct Coutolenc Rd and Skyway; on flat ledge between Coutolenc Rd and old SPRR bed. 707 Comment
  CHSC23648  Castilleja M. S. Taylor 1976-4-4 1064 Butte On s side of Ponderosa Way, ca. 4 mi w of junc of Ponderosa Way and Hwy 32, ca. 23 mi ne of Chico. 457 Comment
  CAS-BOT-BC248999  Castilleja A. A. Heller 1914-8-7 11658 Butte Summit back of Jonesville, on a north slope just below the crest of the ridge 2133 Comment
  CAS-BOT-BC249111  Castilleja affinis Lewis S. Rose 1931-3-28 s.n. Butte Oroville Comment
  CDA13899  Castilleja applegatei subsp. pinetorum G. F. Hrusa, T. D. Wilfred 1997-5-8 13756 Butte Sierra Nevada; on above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  CAS-BOT-BC255464  Castilleja applegatei var. pinetorum E. B. Copeland 1930-7-12 466 Butte Jonesville 1550 Comment
  CAS-BOT-BC255469  Castilleja applegatei var. pinetorum John Thomas Howell 1955-6-14 30445 Butte Magalia, Sierra Nevada 731 Comment
  CHSC103933  Castilleja attenuata Lowell Ahart 2010-5-16 16689 Butte Open grasslands about 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 371 Comment
  RSA0058982  Castilleja attenuata Lowell A. Ahart 2012-4-17 17875 Butte Area where cobbles were removed for Oroville Dam, about 100 yards south of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. 35 Comment
  UC138957  Castilleja attenuata E. B. Copeland 1903-4-10 3040 Butte Chico Comment
  UC1609089  Castilleja campestris subsp. campestris Lowell Ahart 1993-5-17 6950 Butte about 1.5 mi n and 3 mi e Honcut (on the w side of Dunstone Road, about 12 mi se of Oroville) 60 Comment
  CHSC50565  Castilleja lacera Vernon Oswald 1990-7-3 4339 Butte Butte Creek House Meadow Ecological Preserve on Humbug Rd, ca. 3.5 mi east-southeast of Jonesville. 1780 Comment
  CHSC91456  Castilleja lacera Lowell Ahart 2005-7-13 12146 Butte About 10 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown, about 12 miles (air) east of Oroville. 759 Comment
  POM193338  Castilleja payneae E. B. Copeland 1930-7-12 468 Butte Above Jonesville. 2100 Comment
  CHSC114976  Castilleja pruinosa Lowell Ahart 2015-4-13 20035 Butte On the southwest side of Rim Road, about 3 miles (air) north of Jarbo Gap, about 17-1/2 miles (air) north of Oroville. 907 Comment
  CHSC11071  Castilleja subinclusa Lowell Ahart 1968-3-14 Butte Swede's Flat Road, near Honcut Creek. 304 Comment
  CHSC58960  Castilleja tenuis Lowell Ahart 1992-7-29 6883 Butte About 1 mile north-east of the Carr Mine, about 3/4 mile north-west of Lotts Lake. 1798 Comment
  CHSC46798  Ceanothus diversifolius R. A. Schlising; P. Broyles 1988-7-9 4576 Butte E of Paradise and Magalia, and N of Oroville and Jarboe Gap; along Rim road. 792 Comment
  CHSC32834  Ceanothus integerrimus W. Michael Foster 1981-4-24 9 Butte Along both sides of Hwy 70, ca. 2 mi nw of Jarbo Gap and ca. 20 n of Oroville. 609 Comment
  CHSC39784  Ceanothus integerrimus Eloise Gallatin 1935-5-2 Butte Paradise. Comment
  UC718223  Ceanothus integerrimus Carl B. Wolf 1937-5-18 8728 Butte 5 mi below Magalia (on Oroville Rd.); Northern Sierra Nevada 609 Comment
  UCSB62944  Ceanothus integerrimus Sarr, Dan 1995-7-29 Butte 8 mi N of Forest Ranch, on Highway 32 950 Comment
  CAS-BOT-BC47956  Ceanothus lemmonii Carl B. Wolf 1937-5-18 8726 Butte Northern Sierra Nevada - 5 mi. below Magalia on Oroville Road. 609 Comment
  CAS-BOT-BC47957  Ceanothus lemmonii Carl B. Wolf 1937-5-18 8726 Butte Northern Sierra Nevada - 5 mi. below Magalia on Oroville Road. 609 Comment
  CAS-BOT-BC51729  Ceanothus lemmonii A. A. Heller 1913-6-7 10810 Butte Near Stirling 1074 Comment
  CAS-BOT-BC51731  Ceanothus lemmonii Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CHSC29245  Ceanothus lemmonii M. S. Taylor 1980-5-8 2593 Butte Ca. 3 mi n of Forest Ranch, ca. 1 mi e of Hwy 32. 853 Comment
  CHSC86137  Ceanothus parvifolius John Dittes 2002-6-29 624 Butte Northern High Sierra Nevada Range; Watson Ridge; ca. 2.3 air-miles south of Middle Fork Feather River, ca. 2.9 air-mile west by southwest of Cascade, ca. 6.8 air-miles north by northeast of town of Feather Falls. On slope above FS access road. 1255 Comment
  CHSC96989  Ceanothus prostratus Lowell Ahart; Lawrence Janeway 2007-7-10 14282 Butte On the north side of Forest Road 21N31Y, about 6/10 mile west of Bald Rock Road, about 17 miles (air) northeast of Oroville. 1032 Comment
  RSA32884  Ceanothus prostratus var. occidentalis A. A. Heller 1941-6-22 16179 Butte roadside bank, edge of the forest at Cohasset. Comment
  CHSC100470  Celtis australis Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15425 Butte On the southeast side of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CAS-BOT-BC282003  Centaurea calcitrapa W. Gilbert; R. Dodd 1970-7-22 s.n. Butte Highway 32 to Lake Almanor, NE of Forest Ranch, 19.5 miles NE of Chico Comment
  CHSC90928  Centaurea solstitialis Lowell Ahart 2005-4-14 11722 Butte North side of a deep drain ditch, about 200 feet east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  SEINET10972988  Centaurium floribundum Mary Susan Taylor 1980-8-30 Taylor 3322 A Butte T20N R4E sw sec 14, Oroville Dam quad. E Table Mt, along dry vernal creek bed, between Box Hall Flat and Potter Ravine, ca. 2.5 air mi E of Oregon City, ca. 5.5 mi N of Oroville. 366 Comment
  JEPS13269  Centaurium muehlenbergii Rimo Bacigalupi with G. T. Robbins 1955-7-15 5302 Butte about 2 mi above Hooker Oak (along dirt road leading up Big Chico Creek Canyon) 106 Comment
  RSA716047  Centaurium muehlenbergii L. Ahart 2005-7-12 12139 Butte On the east side of Encina Grade Road (Bloomer Hill Road) (Forest Road 21N39), about 3/4 mile (air) south of Bloomer Hill, about five miles west of Oroville Quincy Highway. 734 Comment
  CHSC30783  Centaurium tenuiflorum M. S. Taylor 1980-7-5 3055 Butte Ca. 1 mi e of Meridian Rd, ca. 1.25 mi ne of its jct with Hwy 99, ca. 8 mi n of Chico. 67 Comment
  CHSC66439  Centaurium tenuiflorum Vernon H. Oswald; Lowell Ahart 1996-6-10 7758 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 mile Lane and the Sacramento River. At NE corner of Tract 7.2, Sanctuary I. 33 Comment
  CHSC37398  Centromadia fitchii R. A. Schlising 1980-8-31 3968 Butte Richvale Vernal Pools, 1/4 mi s of jct Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Throughout the area. Comment
  CHSC59505  Centromadia fitchii Lowell Ahart 1992-9-9 6921 Butte Below the high water line of Lake Oroville, about 1/2 mile south-east of Kunkle Reservoir. 243 Comment
  CHSC48165  Centromadia pungens subsp. septentrionalis Vernon Oswald 1983-6-28 785 Butte Graylodge Waterfowl Management Area in Parking Lot 17. Comment
  CHSC27062  Centunculus minimus Lowell Ahart 1978-5-1 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC77992  Centunculus minimus Lowell Ahart 2000-5-13 8355 Butte On the margin of the Thermalito Afterbay, on the south side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 42 Comment
  CHSC35978  Cephalanthera austiniae M. S. Taylor 1982-6-24 4746 Butte Rag Dump 5, ca. 2 mi n of Flea Mt, ca. 10 mi n of Jarbo Gap on Hwy 70. 1158 Comment
  POM107566  Cephalanthera austiniae C. C. Bruce 1897-06 64 Butte Sutton House Comment
  RSA722686  Cephalanthus occidentalis Richard R. Halse 2006-8-1 6976 Butte Chico. In the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  UCD121534  Cephalanthus occidentalis L. E. Hazeltine 1916-7-7 s.n. Butte Chico. Comment
  CHSC27235  Cephalanthus occidentalis var. californicus P. Moyer 1971-9-25 2 Butte C. S. U. C. campus. 60 Comment
  JEPS115367  Cephalanthus occidentalis var. californicus Lowell Ahart 2009-7-9 16019 Butte On the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 203 Comment
  UC600623  Cerastium fontanum subsp. vulgare H. F. Copeland 1929-6-10 Butte Jonesville Comment
  JEPS117150  Cerastium glomeratum Lowell Ahart 2010-4-30 16582 Butte Area of erosion control, disk golf area, on a ridge about 200 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 369 Comment
  JEPS94119  Cerastium glomeratum Lowell Ahart 1998-5-30 7962 Butte ca. 7 mi. (air) n. Oroville (ca. 200 yards n.w. of the lone oak tree, n.w. of the cow chute along Cherokee Rd.) 403 Comment
  CDA3345  Cerastium glomeratum L. Going 1966-3-3 Butte Llano Seco Ranch Ord Ferry Road, Dayton. 0 Comment
  CAS-BOT-BC251514  Cercis occidentalis Camille F. Nowell 2012-7-16 47 Butte Hwy 32 approx 13 mi NE of Chico. 433 Comment
  UC136899  Cercis occidentalis Dr. E. B. Copeland 1903-4-11 3045 Butte Chico Comment
  CHSC116951  Cercocarpus betuloides Matthew Forster 2013-3-5 Butte Hwy 32 off of 14 Mile House Rd. 472 Comment
  CAS-BOT-BC137006  Cercocarpus betuloides var. betuloides A. A. Heller 1917-3-18 12670 Butte Chico Creek lower end of Iron [canon] Canyon Comment
  CHSC40326  Cercocarpus betuloides var. betuloides Lowell Ahart 1985-3-4 4843 Butte Near Kunkle Red., about 2 miles south of Paradise. 550 Comment
  UC600735  Chaenactis douglasii var. douglasii E. B. Copeland 1930-7-1 Butte above Jonesville 2000 Comment
  UC859464  Chamaebatia foliolosa Lewis S. Rose 1937-6-10 37368 Butte Forbestown 838 Comment
  JEPS95159  Chamaesyce maculata Lowell Ahart 1997-10-24 7941 Butte about 20 yards n of South Fork of the Feather River (on the e side of Sucker Creek, strand of Lake Oroville, about 1/4 mi w of the Ponderosa Dam); e side of Sucker Creek 274 Comment
  SEINET13711420  Chamaesyce maculata Lowell William Ahart, Lowell William Ahart 1999-1 8160 Butte 12 Mi SW of Chico, 2 Mi SE Ordbend, Sacramento River Comment
  JEPS105939  Chamaesyce nutans Lowell Ahart 2004-9-14 11403 Butte On the east side of Palermo Honcut Highway, about 20 feet south of Palermo Road, east part of Palermo 57 Comment
  UC1586634  Chamaesyce serpillifolia subsp. serpillifolia Vernon Oswald and Lowell Ahart 1990-10-11 4457 Butte 4 mi S of Jarbo Gap (Lake Oroville, Dark Canyon Arm of) 265 Comment
  SEINET13709719  Chamaesyce serpyllifolia Lowell William Ahart, Lowell William Ahart 1984-1 4785 Butte 5 Mi. SW Oroville Comment
  CAS-BOT-BC32685  Chamaesyce sulfurea Amos Arthur Heller 1913-9-16 11140 Butte Hills near Big Chico Creek, east of Chico Comment
  SEINET10529872  Cheilanthes cooperae Mary Susan Taylor 1979-3-20 Taylor 1956 Butte T21N R4E nw1/4 sec. 21. Cherokee Quad. Along old road on N side of Hwy 70 following West Branch of the Feather River, which begins at S side of bridge over N fork of Feather River, ca. 10 mi N of Oroville; limestone outcrops within Foothill Woodland. 305 Comment
  SEINET10470286  Cheilanthes covillei Lowell Ahart 1983-5-28 Ahart 4024 Butte Along trail to Feather Falls, ca. 5 mi n of the town of Feather Falls. Yellow Pine Forest; 600 m. 600 Comment
  CHSC60940  Cheilanthes gracillima Lowell Ahart 1993-6-26 7039 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  RSA755750  Chenopodium L. Ahart 2009-8-13 16280 Butte At the west end of a picnic area, on the north side of the channel, about 140 yards east of the diversion structure that controls Mud Creek diversion and Linda Channel, about 40 yards northwest of Big Chico Creek, Upper Bidwell Park, Chico. 69 Comment
  CHSC94608  Chenopodium album Lowell Ahart 2006-9-13 13312 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  CHSC62025  Chenopodium atrovirens Vernon H. Oswald 1989-8-9 3931 Butte Logging Rd (G-Line) paralleling Butte Creek, 0.5 mi sw of Humboldt Rd, ca. 1.3 mi (air) sw of Butte Meadows. 1295 Comment
  CDA13235  Chenopodium botrys G. F. Hrusa, T. D. Wilfred 1996-7-8 13082 Butte Plumas National Forest; Old gun range on Old Railroad Grade Rd. nr. Paradise Lake Dam, approx. 3 m. N of Magalia. Comment
  RSA718087  Chenopodium botrys L. Ahart 2006-7-16 12961 Butte Near the open mudflow area, on the S side (road edge) of Humboldt Road, about 1.5 miles (air) SW of Butte Meadows. 1436 Comment
  SEINET10479019  Chenopodium botrys Lowell Ahart 1983-8-16 Ahart 4285 Butte Near Humboldt Rd, ca. 3 mi sw of Butte Meadows. Yellow Pine Forest; 1450 m. 1450 Comment
  SEINET10479041  Chenopodium vulvaria Lowell Ahart 1991-8-17 Ahart 6703 Butte In the native plant garden at the Durham Elementary School, Durham. Urban-suburban. 55 Comment
  CHSC26684  Chimaphila menziesii M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1482 Butte At Humboldt Summit at Butte-Tehama County Line, ca. 150 ft w of Old Humboldt Rd, on Butte side. 2133 Comment
  CHSC44162  Chimaphila menziesii Vernon H. Oswald; Lowell Ahart 1988-7-29 3649 Butte Ca. 5 mi (air) se of Jonesville on the ridge running eastwards from the peak of Snow Mtn. 2097 Comment
  CAS-BOT-BC184906  Chloris virgata Lowell Ahart 1988-7-31 6141 Butte On the east side of Lone Tree Road, about 50 yards north of the intersection with Cox Lane, about 8 miles south of Oroville. 33 Comment
  CHSC44530  Chlorogalum angustifolium Lowell Ahart 1988-5-12 5986 Butte About 1/2 mile north-east of the Honcut Cemetery, Joie Osgood Ranch, about 3 1/2 miles east and 1 1/2 miles north of Honcut. 60 Comment
  CAS-BOT-BC498628  Chlorogalum angustifolium A. A. Heller 1914-5-14 11400 Butte Near Clear Creek below the Quercus Douglasii belt; Marysville Buttes Comment
  UCD138421  Chlorogalum angustifolium J. A. Jernstedt 1976-5-21 356 Butte Intersection of Palermo Road and Power House Hill Road, ca. 0.5 mile east of Highway 70. Comment
  CHSC81582  Chlorogalum pomeridianum var. pomeridianum Petra M. Lee 2000-4-19 Butte Chico. Upper Bidwell Park at Green Gate, 6.8 mi past Bruce Rd on Hwy 32. 243 Comment
  POM165154  Chorizanthe membranacea A. A. Heller, H. E. Brown 1902-5-6 5465 Butte Berry Canyon (near Clear Creek). Comment
  POM193562  Chorizanthe membranacea C. C. Bruce 1896-05 155 Butte Iron Canyon Comment
  CHSC39931  Chorizanthe polygonoides var. polygonoides M. S. Taylor; V. Oswald 1984-4-4 5392 Butte S side of Humbug Rd, ca. 2 mi SW of Nimshew, ca. 12 air mi NE of Chico. In dry open bare patches on hillside. Comment
  NY285649  Chorizanthe polygonoides var. polygonoides C. C. Parry s.n. Butte Comment
  CHSC88960  Chorizanthe stellulata Christine Hantelman 2000-4-27 84 Butte On western end of vernal pool preserve between Oroville airport runway and Table Mountain golf course. 60 Comment
  UC101515  Chorizanthe stellulata C. C. Parry May 1883 Butte Chico Comment
  SEINET10479755  Chorizanthe stellulata Mary Susan Taylor 1974-5-20 Taylor 236 Butte Ca. 50 ft N of Skyway to Paradise, ca. 16 mi NE of Chico, on Burton's Mesa. 244 Comment
  POM219417  Chrysolepis sempervirens H. F. Copeland 1928-8-14 215 Butte Neighborhood of Jonesville, on dry ridge above Scotch-John Creek. 1829 Comment
  CHSC87213  Cicendia quadrangularis Lowell Ahart 2004-4-4 10714 Butte Bottom of a vernal pool, about 250 yards east of Wilber Road, northeast of the high hill crossed by Wilber Road, cattle pasture, about 3 miles (air) west of Thermalito. 48 Comment
  CHSC20493  Cichorium intybus M. S. Taylor 1975-6-25 795 Butte Along Mud Creek, ca. 1/4 mi N of Richardson Springs Hotel, ca. 6 mi NE of Chico. 121 Comment
  CHSC59042  Cinna latifolia Lowell Ahart 1992-7-26 6836 Butte In a stream bed, on the south side of Coon Hollow, about 1/2 mile north of the Carr Mine, about 2 (air) miles south of Snow Mountain. 1737 Comment
  CHSC46719  Cirsium arvense R. A. Schlising; P. Broyles 1986-8-5 4499 Butte N part of county, NE of Snag Lake and W of Butte Creek House. Along Butte Creek. 1767 Comment
  CAS-BOT-BC278080  Cirsium douglasii var. breweri A. A. Heller 1914-8-7 11652 Butte Butte Meadows 1219 Comment
  CHSC46449  Cirsium scariosum V. Oswald; L. Ahart 1989-6-27 3828 Butte Humbug Rd at Butte Creek House, ca. 3.3 mi (air) se of Jonesville. Along Butte Creek. 1767 Comment
  CHSC90196  Clarkia arcuata Camela J. Ott 1989-4-11 11 Butte Ca. 100 m s of covered bridge, 10.2 km ese of Chico. 200 Comment
  HSC87164  Clarkia arcuata Robert E. Preston 1979-4-22 17 Butte N side of Cherokee Rd., 5 mi. N of Oroville 366 Comment
  SEINET12193694  Clarkia arcuata T. A. Barrett 1976-1 10 Butte 13.7 km E of Chico, N side of the Skyway 500 Comment
  CHSC89905  Clarkia biloba subsp. brandegeeae N. L. Jurjavcic; M. K. Hayden 2004-6-9 Butte Northern Sierra Nevada Foothills. Located along the access roadside adjacent to Miners Ranch Canal, near Ponderosa Dam. 304 Comment
  CAS-BOT-BC164134  Clarkia concinna Mrs. J. H. Morrison 1932-5-30 s.n. Butte Durham Comment
  CAS-BOT-BC164518  Clarkia gracilis subsp. albicaulis Lowell Ahart 1968-5-21 s.n. Butte West of Magalia 1000 Comment
  CAS-BOT-BC171876  Clarkia gracilis subsp. gracilis R. W. Thorp 1963-7-3 63 -56 Butte 12 miles northeast of Chico Comment
  CAS-BOT-BC163266  Clarkia mildrediae subsp. lutescens Lowell Ahart 1983-6-30 4176 Butte Along the road, south-east of Concow Res. 500 Comment
  CAS-BOT-BC163276  Clarkia mildrediae subsp. mildrediae Lowell Ahart 1983-6-30 4186 Butte About 3 miles south-east of Stirling City, on the west side of the West Branch of the Feather River 1100 Comment
  CAS-BOT-BC163356  Clarkia mosquinii L. P. Janeway 1993-7-12 4436 Butte Upper drainage of Berry Creek; along Rd 21N80 0.9 mi northwest of Zink Road 853 Comment
  UCD80464  Clarkia purpurea CNPS SN Foothill Team 2005-5-3 SNFN 0197 c Butte City of Chico, Doe Mill Meadowfoam Preserve, located ca. 200 m at 240 degrees from the reserve entrance gate, and about 75 m from the east fence. 83 Comment
  UCD80465  Clarkia purpurea CNPS SN Foothill Team 2005-4-13 SNFN 0078 d Butte City of Chico, Doe Mill Meadowfoam Preserve, at the east end of Warfield Street, ca. 85 m south of the Preserve gate entrance. 82 Comment
  SEINET10453158  Clarkia purpurea Lowell Ahart 1985-5-15 Ahart 4978 Butte West of Lunt Road, about 1/2 mile north of the inter- section of Lunt Road and Highway 70, north of Yankee Hill, N of Oroville. Comment
  CAS-BOT-BC163858  Clarkia purpurea subsp. quadrivulnera Lowell Ahart 1972-5-8 s.n. Butte Peter Ahart Ranch, Honcut 150 Comment
  JEPS107749  Clarkia purpurea subsp. quadrivulnera Lowell Ahart 2005-5-28 11820 Butte Pasture, on the south side of Nelson Avenue, east of the bridge across the Thermalito Forebay, Thermalito 67 Comment
  CHSC3528  Clarkia purpurea subsp. viminea John Francis 1966-5-7 155 Butte 3.6 miles N. of intersection of Pentz Rd. and Hwy. 99E., on Pentz Rd. Beside road. Comment
  CAS-BOT-BC164791  Clarkia rhomboidea Mrs. J. H. Morrison 1932-5-30 s.n. Butte Durham Comment
  CHSC30066  Clarkia rhomboidea R. A. Schlising 1980-5-26 3601 Butte Several mi sw village of Cohasset, along fire road e of Cohasset Road. 411 Comment
  CHSC36811  Clarkia rhomboidea L. Ahart 1982-6-15 3581 Butte Ca. 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 1000 Comment
  HSC95491  Clarkia rhomboidea L. P. Janeway 1995-7-16 4859 Butte 0.8 mi. NW of Oak Point, 0.8 mi. E of Transfer Ridge on the E side of Breakneck Canyon, 1.5 mi. N of W Branch Feather River 1402 Comment
  SD3273  Clarkia rhomboidea E. B. Copeland 1931-6-10 Butte Jonesville 1650 Comment
  UC1143258  Clarkia rhomboidea H. and M. Lewis, F. Vasek 1950-6-30 758 Butte 0.8 mi s Arch Rock (Hwy. 24); Feather River Comment
  CAS-BOT-BC164798  Clarkia rhomboidea L. P. Janeway 1991-6-1 3977 Butte East-facing cut-bank of Dark Canyon Road 0.4 mi south of Big Bend Road/Parkhill 560 Comment
  RSA144793  Clarkia rhomboidea G. I. Stage, R. Thorp 1959-6-21 59 -118 Butte Highway 32 at line between Tehama County and Butte County. Comment
  SEINET10492518  Clarkia rhomboidea Mary Susan Taylor 1978-6-24 Taylor 1642 Butte Ernies Island, in Butte Creek, junction with Old Humboldt Road, ca 0.5 mile W of Butte Meadows; Yellow Pine Forest. 4500 feet. 1370 Comment
  CAS-BOT-BC165440  Clarkia unguiculata H. Lewis; M. Lewis; F. Vasek 1950-6-30 760 Butte Highway 24, 2.0 miles south of Arch Rock on Feather River Comment
  CHSC87565  Clarkia unguiculata R. D. Fischer 2004-4-28 146 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located on bluff edge of the Disk Golf Course, just east of the northern most bluff projection (a look out point). 365 Comment
  SEINET516348  Claytonia exigua subsp. exigua Lowell Ahart 1985-1 4859 Butte Growing on damp bare broken disturbed serpentine W of Lunt Rd., about 1/2 mi. N of the intersection of Lunt Rd. and Hwy. 70. 518 Comment
  SEINET10572685  Claytonia heterophylla Lowell Ahart 1983-8-16 Ahart 4289 Butte T26N R4E nw section 28. Along a small stream that flows into Butte Creek, ca. 1 mi east of Butte Meadows. Yellow Pine Forest; 1450 m. 1450 Comment
  SEINET4988485  Claytonia palustris Unknown 1959-7-4 490 Butte Jonesville, 0.4 km E of Jonesville Hotel Comment
  SEINET10572694  Claytonia parviflora Mary Susan Taylor 1981-5-5 Taylor 3619 Butte T20N R6E sw/ne sec 11. Forbestown quad. In shaded creek crossing 21N35Y, ca. 0.5 mi S of Feather Falls trailhead, Bryant Ravine, ca. 1 air mi N of Feather Falls community. Yellow Pine Forest; 2800 ft. 853 Comment
  CHSC33109  Claytonia parviflora subsp. parviflora M. S. Taylor 1981-5-5 3619 Butte In shaded creek crossing 21N35 and , ca. 0.5 mi s of Feather Falls trailhead, Bryant Ravine, ca. 1 air mi n of Feather Falls. 853 Comment
  CHSC46725  Claytonia parviflora subsp. parviflora Lowell Ahart 1978-4-19 1653 Butte Along the trail to Feather Falls, north of Frey Creek, about 3 miles north of Feather Falls. 548 Comment
  CHSC19934  Claytonia perfoliata subsp. perfoliata M. S. Taylor 1975-3-10 380 Butte Abundant on s side of Butte Creek, ca. 30 ft s of Covered Bridge, ca. 8 mi e of Chico. Comment
  CHSC55395  Claytonia perfoliata subsp. perfoliata C. G. Morris 1991-4-18 15 Butte Small population 60 yds n of Castle Dr., 0.6 mi w of Oliver Rd., Paradise. 533 Comment
  CAS-BOT-BC440033  Claytonia perfoliata subsp. perfoliata A. A. Heller 1920-4-10 13361 Butte New high school grounds at Chico Comment
  CAS-BOT-BC443702  Claytonia rubra L. P. Janeway 1988-7-16 2878 Butte Creek along Bull Hill Road 2.2 mi from Skyway. 1508 Comment
  RSA469284  Claytonia rubra H. F. Copeland 1929-6-11 1516 Butte Jonesville. 1524 Comment
  SEINET10572736  Claytonia rubra Mary Susan Taylor 1981-3-31 Taylor 3449 Butte T22N R4E nw sec 14 PUlga SW quad. SE side of spur rd, ca. 3/4 mi n of its jct with Ponderosa Way (Rim Rd), ca. 2 mi n of its jct with Hwy 70 at Jarbo Gap, ca. 17 air mi n of Oroville; 2700 ft. 823 Comment
  CHSC99555  Clematis lasiantha L. P. Janeway 2008-5-26 9369 Butte Northern Sierra Nevada Foothills. East side of West Branch Feather River about 2.4 km north-northeast of Magalia; along Jordan Hill Road (old Ponderosa Way) 1.0 road km northeast of the bridge over West Branch Feather River. Steep northwest-facing rocky scrub area in otherwise mixed conifer forest. 564 Comment
  RSA754390  Clematis lasiantha L. Ahart 2009-4-22 15589 Butte W side of Guardians Trail, about 100 yards N of Pine Trail, Upper Bidwell Park, W of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 382 Comment
  SEINET10536025  Clematis lasiantha Mary Susan Taylor 1975-4-25 Taylor 491 Butte Ca. 1/4 to 1/2 mi E of Cohasset Hwy, along dirt rd leading up onto ridge, ca. 10 mi NE of Chico. Soil wet red clay. Mixed Chaparral. Comment
  UC83304  Cleome platycarpa Mrs. R. M. Austin Jun 1887 Butte Comment
  CHSC11087  Collinsia tinctoria Lowell Ahart 1968-6-6 Butte Near Swede's Flat Road. 121 Comment
  CHSC79571  Collinsia tinctoria G. F. Hrusa; E. Sandoval 1993-5-29 11134 Butte Feather River Canyon. Base of south-facing slope at corner of Hwy 70 and Pulga Rd. at bridge over Feather River. [Original lat./long. on label is '39 48 N; 121 37 W']. 800 Comment
  POM252812  Collinsia tinctoria A. A. Heller 1938-5-28 15119 Butte On the Feather River Highway 23 miles from Oroville. Comment
  SFV10348  Collinsia tinctoria M. L. Vincent 1963-6-6 369 Butte Nelson Bar Road at PGE. 300 Comment
  UC1012162  Collinsia tinctoria F. W. Pennell and A. A. Heller 1940-6-5 25684 Butte above Oroville (in Lassen National Forest, along Feather River, Route 24); Lassen National Forest, Feather River 548 Comment
  CHSC42554  Collomia heterophylla Lowell Ahart 1987-5-6 5533 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC62122  Collomia heterophylla B. Castro 1987-5-7 62 Butte Ca 3 air mi NE of Forest Ranch on the S side of Ponderosa Way ca 0.2 mi E of its jcn with Garland Road, at the trailhead for the Butte Creek Trail (ca 0.5 mi downstream from the Forks of Butte site). 633 Comment
  CAS-BOT-BC180252  Comandra umbellata subsp. californica A. A. Heller 1915-4-20 11845 Butte 3 miles above Centerville in the Sierra foothills Comment
  CHSC46361  Convolvulus arvensis Lowell Ahart 1989-5-23 6237 Butte Near a small stream, near a new subdivision road, 1/2 mile east of Dunstone Drive, about 1/2 mile north of Bangor Park Road, west of Bangor. 76 Comment
  CHSC78072  Convolvulus arvensis Shelly Pirtie 1997-4-25 34 Butte 20 miles south of Chico off of Biggs-Afton Road: Little Dry Creek. Comment
Read comments Jun 19 2009
  CAS-BOT-BC286067  Conyza canadensis M. S. Taylor 1977-11-10 1515 Butte At jct of Chico-Butte Hwy & Ord Ferry Rd, ca. 6 mi s of Chico 36 Comment
  POM180852  Conyza canadensis H. F. Copeland 1923-1 867 Butte Nelson Comment
  JEPS117532  Cordylanthus pilosus subsp. hansenii Lowell Ahart 2010-9-12 17150 Butte Below the high water line of Lake Oroville, about 150 yards north of the South Fork of the Feather River, about 50 yards east of Sucker Creek, about 1/4 mile (air) northwest of the Ponderosa Dam 243 Comment
  CHSC50806  Cordylanthus tenuis subsp. viscidus Vernon Oswald; Lowell Ahart 1990-7-31 4415 Butte Jeep Trail between Concow Rd and Rim Rd, ca. 2 mi northeast of Concow. 899 Comment
  CHSC52016  Cornus nuttallii Steven Triano 1988-4-17 58 Butte Ca 50 ft e of Hwy. 32 and 6.54 mi n of Forest Ranch. 984 Comment
  SEINET5544807  Cornus nuttallii H. S. Gentry, S. Koch 1962-1 19764 Butte 2-3 mi. NW of Cohasset. 1066 Comment
  SFV2622  Cornus nuttallii B. Fuller 1961-4-15 s. n. Butte Hillside west of Paradise California Reservoir. Comment
  CHSC31655  Cornus sericea subsp. occidentalis L. Ahart 1977-5-20 1386 Butte Along the edges of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  SBBG25328  Cornus sessilis F. C. Raney 1964-9-10 Butte 10 mi NE of Feather Falls Comment
  UC195371  Cornus sessilis A. A. Heller 1914-6-24 11514 Butte at West Branch; w. side Sierra Nevada 1036 Comment
  CHSC50322  Coronilla varia Vernon Oswald 1990-6-2 4278 Butte Butte County Center along Nelson Ave, Thermalito. 79 Comment
  RSA718381  Coronilla varia L. Ahart 2006-6-24 12862 Butte Disturbed area on the east side of the dirt road (Ponderosa Way), south of an intersection, a gated road goes southeast, on Cohasset Ridge, about 4 miles (air) northeast of Cohasset. Elevation 3680 (by map) 1113 Comment
  SEINET12091577  Corydalis caseana Unknown 1983-1 4301 Butte ca 1 mi E of Butte Meadows, T26N, R4E, NW Section 28 1450 Comment
  SEINET3152046  Corydalis caseana subsp. caseana M. Ownbey, G. B. Ownbey 1946-6-24 2936 Butte 1.3 mi. below Jonesville Comment
  CHSC28013  Corylus cornuta var. californica M. S. Taylor 1978-7-21 1779 Butte Lake Madeone at its jct with Oroville-Quincy Hwy ca. 10 mi ne of Oroville. 609 Comment
  JEPS124182  Cotoneaster pannosus Lowell Ahart 2015-2-20 19934 Butte Just south of the railroad underpass, on the west side of Hountoon Street, about 50 yards north of Kitrick Avenue, Oroville. Comment
  UC1562410  Cotula australis Lowell Ahart 1990-5-28 6498 Butte about 2 1/2 mi n.e. East Gridley (along edges of Palm Avenue, about 1/12 mi. e. of Larkin Road) 30 Comment
  CAS-BOT-BC427665  Crassula connata Lowell Ahart 1990-4-8 6442 Butte On the east side of Pacific Heights Road, about 3 1/2 miles south-west of Oroville 33 Comment
  CHSC38404  Crassula connata Vernon Oswald 1983-3-9 139 Butte Upper Bidwell Park, Chico, on north slope 1200 ft e of the power lines and 1600 ft n of Upper Park Rd. 182 Comment
  CHSC44891  Crepis pleurocarpa Lowell Ahart 1988-7-28 6139 Butte Hillside at the north side of the dam at Lost Creek Reservoir. 1036 Comment
  CHSC11106  Croton setiger Lowell Ahart 1969-7-12 Butte Peter Ahart Ranch, Honcut. 45 Comment
  UCR219265  Croton setiger George K. Helmkamp, E. A. Helmkamp 2009-9-5 15588 Butte Sacramento Valley, Lower Honcut Road, 0.9 rd. mi. west of Honcut, 7.8 mi. SE (111 deg. ) of Gridley 34 Comment
  CHSC82512  Crucianella angustifolia Lowell Ahart; John Dittes, Josephine Guardino 2002-6-21 9754 Butte On the south side of a poor dirt road, Watson Ridge, about 2 miles (air) northeast of Bald Rock Dome, about 5 miles (air) north of Feather Falls (the town). Comment
  JEPS110271  Crucianella angustifolia Lowell Ahart 2006-6-9 12645 Butte On the south side of the service road to Bardees Bar along the North Fork of the Feather River, about 1/8 mile east of Highway 70, about 2 3/4 miles (air) southwest of Pulga 435 Comment
  JEPS28122  Crucianella angustifolia John Thomas Howell 1962-6-16 37612 Butte w of Nelson Bar (Feather River West Branch); Sierra Nevada 304 Comment
  SEINET10500614  Crucianella angustifolia Mary Susan Taylor 1979-5-6 Taylor 1994 A Butte Peter & Lowel Ahart Ranch, Honcut; Valley Grassland. Comment
  HSC97072  Crypsis alopecuroides L. Ahart 2006-9-11 13302 Butte S edge of the N Fork of the Feather River, N side of Highway 70, about 1/8 miles W of the Poe Dam, about 3/4 mile NE of Pulga, about 21 miles (air) NE of Oroville 432 Comment
  CHSC116139  Crypsis schoenoides Lowell Ahart 2015-10-26 20601 Butte Strand of Lake Oroville, on west side of West Branch of Feather River, about 1 mile (air) southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. 207 Comment
  CHSC72254  Crypsis schoenoides Lowell Ahart 1998-9-11 8061 Butte On the bottom of a vernal pool, about 3/4 mile northwest of the cattle chute on the west side of Cherokee Road, North Table Mountain, about 7 (air) miles north of Oroville. 396 Comment
  JEPS108962  Crypsis schoenoides Lowell Ahart 2006-9-11 13303 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville 431 Comment
  RSA492371  Crypsis schoenoides P. Reisentz 1979-5-13 s.n. Butte 4 miles east on Cherokee Rd. from Hwy. 70 Comment
  SEINET10835341  Crypsis schoenoides Mary Susan Taylor 1978-9-8 Taylor 1882 Butte Along flood control slough, ca. 4 mi N of Chico, along Hwy 99. Comment
  CAS-BOT-BC190168  Crypsis vaginiflora Lowell Ahart 1986-11-14 5467 Butte About 0.1 mile south of the clay burrow for Oakville Dam, 0.25 mile east of Larkin Road, about 6 miles southwest of Oroville. 36 Comment
  CAS-BOT-BC190171  Crypsis vaginiflora A. A. Heller 1914-7-31 11632 Butte Sacramento Valley about 6 miles northwest of Chico. Chico-Hamilton Road. Comment
  POM266636  Crypsis vaginiflora J. C. Roos 1939-7-3 1521 Butte a few miles southeast of Chico Comment
  CHSC113401  Cryptantha affinis Lowell Ahart 2014-7-7 19562 Butte About 5 yards east of the Skyway, about one-mile north of Stirling City. 1142 Comment
  CHSC113521  Cryptantha affinis Lowell Ahart 2014-7-7 19601 Butte On the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CHSC61302  Cryptantha affinis Lowell Ahart 1993-7-31 7140 Butte On the west side of a poor dirt road that leads to a camp, just west of where the dirt road crosses Big Kimshew Creek, about 2 miles south-east of Bald Mountain, north-east of Stirling City. 1493 Comment
  RSA718071  Cryptantha affinis L. Ahart 2006-7-16 13000 Butte On the west side of the poor dirt road, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1525 Comment
  UC1609327  Cryptantha affinis Lowell Ahart 1993-6-26 7018 Butte about 1 mi w Lost Creek Reservoir (e side of the dirt road) 1188 Comment
  UC179680  Cryptantha affinis A. A. Heller 1914-6-22 11489 Butte Chico Meadows 1219 Comment
  UC480664  Cryptantha affinis H. F. Copeland 1930-7-20 1386 Butte Jonesville Comment
  CHSC97357  Cryptantha flaccida Paul Maslin 2005-4-30 54 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10610150E 4408939N. 518 Comment
  JEPS117205  Cryptantha flaccida Lowell Ahart 2010-5-14 16668 Butte Near south park fence, about 1/4 mile west of the entrance to the Disc Golf Area, west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 363 Comment
  UC857119  Cryptantha flaccida A. A. Heller 1914-4-27 11325 Butte 8 mi n Oroville Comment
  CHSC42516  Cryptantha intermedia Lowell Ahart 1987-5-9 5577 Butte Along Pulga Road, about 1/4 mi west of Bardees Bar along the North Fork of the Feather River. about 2 1/2 miles south-west of Pulga. 365 Comment
  CHSC62534  Cryptantha intermedia L. P. Janeway 1993-5-2 4337 Butte Sperpentine rocky outcrop narrow ridge, south of Serpentine Point and above Hwy 70. 518 Comment
  JEPS30754  Cryptantha intermedia Lincoln Constance 1941-5-28 2830 Butte at Magalia, South Branch of the Feather River, Sierra Nevada foothills Sierra Nevada, Feather River, Magalia 487 Comment
  UC763036  Cryptantha intermedia R. F. Hoover 1937-5-18 2234 Butte 3 mi n Chico Comment
  SEINET10935929  Cryptantha intermedia Lowell Ahart 1985-5-31 Ahart 5030 Butte Lake Oroville, 1/8 mile east of the Enterprise Launch Area, about 1/2 mile west of the Enter- prise Bridge across Lake Oroville, north-east of Oroville. Comment
  CHSC33259  Cryptantha simulans R. A. Schlising 1980-6-24 3774 Butte N of Oroville along Hwy 70 in canyon of North Fork of Feather River; 0.2 mi N of Cresta Powerhouse. 457 Comment
  CHSC51257  Cucumis melo Lowell Ahart 1990-10-5 6629 Butte On the bottom of McCabe Creek, below the high water line of Lake Oroville, about 1/4 mile south-west of the Enterprise Bidge across Lake Oroville. 228 Comment
  RSA17599  Cupressus macnabiana C. B. Wolf, E. R. Johnson 1934-10-5 6161 Butte Magalia, Sierra Foothills 701 Comment
  SEINET10531460  Cupressus macnabiana Carl B. Wolf, E. R. Johnson 1934-10-5 Wolf 2122 Butte Sierra Neveda Foothills, at Magalia. Upper sonoran:- Digger Pines. Sun. Bright green serpentine. 700 Comment
  CHSC5950  Cupressus sempervirens M. MacArthur 1968-6-17 191 Butte SE side of PSA bld., Chico State College campus. 60 Comment
  CAS-BOT-BC224423  Cuscuta californica Lowell Ahart 1983-9-19 4455 Butte About 1/8 mile south of the Gray Lodge Waterfowl Management Area Headquarters, about 12 miles south-west of Gridley 35 Comment
  CHSC29817  Cuscuta californica M. S. Taylor; J. D. Jokerst 1979-10-13 2264 Butte Jordan Hill Rd, ca. 5.3 mi n of its jct with Concow Rd, ca. 2 mi e of Paradise. 609 Comment
  CHSC112043  Cuscuta campestris Lowell Ahart 2012-8-22 18423 Butte On Xanthium strumarium. On dry disturbed red soil, on the south side of the Railroad Signal Box, east side of the Railroad, about 20 yards south of Cental House Road, about 2 miles (air) northwest of Honcut. 35 Comment
  SBBG120020  Cuscuta campestris L. Ahart 2006-9-13 13313 Butte S edge of the N Fork of the Feather River, just W of Mill Crk, N side of Hwy 70, ca. 1/8 mi W of the Poe Dam, ca. 3/4 mi NE of Pulga, ca. 21 mi (air) NE of Oroville 431 Comment
  JEPS121237  Cuscuta occidentalis Lowell Ahart 2013-7-16 18838 Butte NW of a large wash, about 0.5 mile SE of the Honcut Cemetery, about 3.24 air miles NE of Honcut. Comment
  UCD126346  Cuscuta subinclusa A. A. Heller 1914-7-22 11588 Butte near West Branch. 1066 Comment
  CHSC11876  Cymopterus terebinthinus var. californicus E. B. Copeland 1929-7-13 390 Butte Jonesville. 1700 Comment
  CHSC83051  Cynodon dactylon Lowell Ahart 2002-10-17 9998 Butte On the hills below the high water line of Lake Oroville, about 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. 227 Comment
  SEINET10507350  Cynodon dactylon Mary Susan Taylor 1977-10-10 Taylor 1521 Butte Ca. 4-5 mi S of junction of Chico-Butte Hwy and Ord Ferry Road, ca. 20 mi S of Chico, on both sides of Chico-Butte Hwy; dried up Freshwater Marsh, and slough area. 30 Comment
  UC480665  Cynoglossum occidentale H. F. Copeland 1930-6-11 Butte Jonesville, Butte Creek Canyon Comment
  UC600449  Cynoglossum occidentale E. B. Copeland July, 1930 Butte Jonesville 1550 Comment
  CAS-BOT-BC190394  Cynosurus echinatus Lowell Ahart 1982-5-3 3523 Butte Sierra Nevada. A little south of the gravel pit, ca. 0.75 mile south of the Myers home, Myers R. 50 Comment
  UCD60178  Cynosurus echinatus Beecher Crampton 1965-6-17 7384 Butte 1/2 mile west Rackerby Store, La Porte Road. 426 Comment
  CHSC2108  Cyperus difformis D. Bower 1953-7-23 Butte 3A Llano Seco. 30 Comment
  CAS-BOT-BC114735  Cyperus difformis J. M. Tucker 1953-8-28 2680 Butte In rice plots; Biggs Rice Experiment Station. Comment
  UC589979  Cyperus eragrostis H. S. Yates 1936-8-14 6123 Butte 10 mi. s. Durham; Chico Quad. 30 Comment
  CHSC21134  Cyperus erythrorhizos M. S. Taylor 1975-10-3 940 Butte Sandbar on Sacramento River, ca. 10 mi w of Chico. Bidwell River State Park at Chico Landing. 36 Comment
  CHSC45126  Cyperus erythrorhizos Vernon Oswald 1987-7-8 3099 Butte Butte Creek Reserve, on the north side of Butte Creek east of the Skyway, east of Chico. 74 Comment
  CHSC51280  Cyperus erythrorhizos Lowell Ahart 1990-10-21 6640 Butte Below the high water line of Lake Oroville, about 1 mile north of Nelson Bar Road, about 1/2 mile west of Gold Flat. 213 Comment
  UCD169398  Cyperus erythrorhizos L. P. Janeway 2001-6-13 7166 Butte Sacramento Valley. On east side of the Sacramento River about 1.8 km southeast of Ord Ferry Road bridge. 29 Comment
  UCD19359  Cyperus flavicomus E. Dean; with J. Ditomaso and E. Healy 2001-8-20 850 Butte Biggs UC Field Station. North of town of Biggs, W of jct of Hwys 99 and 162. South side of Hamilton Road, W of jct with Riceton Hwy, W side of RR tracks. Along dirt road that is the extension of Hamilton Rd. 30 Comment
  UCD16182  Cyperus flavicomus Joe DiTomaso 2000-8-30 s.n. Butte University of California Biggs Rice Research Station, near corner of Riceton and Hamilton Roads. Comment
  CHSC43783  Cyperus fuscus Vernon Oswald 1983-8-19 1005 Butte Upper Bidwell Park, Chico, 0.2 mi e of the end of the pavement on Upper Park Rd. Growing at the edge of Chico Creek. 91 Comment
  JEPS95883  Cyperus fuscus Lowell Ahart 1999-10-3 8287 Butte northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  CHSC102509  Cyperus niger Lowell Ahart 2009-8-3 16257 Butte Along a small drainage about 50 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 209 Comment
  CHSC68397  Cyperus niger L. P. Janeway 1986-10-19 1936 Butte Along small creek just west of Clear Creek, on north side of Durham-Pentz Road. On Butte College agricultural land. 82 Comment
  UCSB63742  Cyperus niger Ahart, Lowell 1998-6-30 Butte T20N, R4E, northeast 1/4 Section 17; west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 403 Comment
  CAS-BOT-BC114021  Cyperus rotundus L. P. Janeway; C. A. Janeway 1986-9-10 1839 Butte Within the city of Chico, on the CSU Chico Campus. Chico Quad. 59 Comment
  CHSC30386  Cyperus squarrosus J. D. Jokerst 1980-7-18 993 Butte Top of North Table Mt., ca. 100 m NW of the jct. of Cherokee Rd. and the E edge of Mt. Comment
  JEPS121963  Cyperus squarrosus Lowell Ahart 2014-7-7 19576 Butte North of the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. Comment
  CDA38898  Cyperus strigosus L. Ahart 2009-8-13 16276 Butte Chico: about 100 yards east of the diversion structure that controls Mud Creek diversion and Lindo Channel, northeast of Hooker Oak, Upper Bidwell Park. Comment
  CHSC113946  Cyperus strigosus Lowell Ahart 2014-7-18 19693 A Butte Border of an irrrigated field, Doug Upton property, about 100 yards west of Lone Tree Road, about 2 miles (air) southwest of Palermo. 35 Comment
  CHSC78489  Cyperus strigosus Lowell Ahart 2000-8-23 8661 Butte On the margins of a small pond, about 1/2 mile west of Pacific Heights road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. 42 Comment
  CHSC81934  Cyperus strigosus L. P. Janeway 2001-6-13 7168 Butte Sacramento Valley. On east side of the Sacramento River about 1.8 km southeast of Ord Ferry Road bridge. 29 Comment
  SEINET10535614  Cystopteris fragilis Mary Susan Taylor 1978-6-24 Taylor 1659 Butte Montane Meadow, on N side of Scotts John Road, ca. 3 mi E of its junction with Old Humboldt Road, ca. 5 mi E of Jones ville; Yellow Pine Forest. 1676 Comment
  SEINET10906973  Cytisus monspessulanus Mary Susan Taylor 1981-5-5 Taylor 3613 Butte T20N R6E nw sec 11, Forbestown quad. W side of spur rd, ca. 0.5 mi N of its jct with 21N35Y-Bryant Ravine Rd, ca. 1 air mi N of Feather Falls community. Yellow Pine Forest; 2800 ft. 853 Comment
  CAS-BOT-BC190482  Dactylis glomerata M. S. Taylor 1978-7-21 1815 Butte On south side of Oroville-Quincey Highway. Ca. 14 miles north of Lake Madrone. 1463 Comment
  CDA42881  Dactylis glomerata L. Ahart 2012-5-23 18107 Butte Along the horse trail, north of Table 32, about 50 yards south of Vallombrosa Avenue, southwest of Crister, Lower Bidwell Park, Chico. Comment
  JEPS120086  Dactylis glomerata Lowell Ahart, Linnea Hanson, Josephine Guardino 2012-5-23 18107 Butte Along the horse trail, north of Table 32, about 50 yards south of Vallombrosa Avenue, southwest of Crister, Lower Bidwell Park, Chico. Comment
  CHSC41919  Danthonia californica var. americana Lowell Ahart 1983-8-16 4291 Butte Near a bog, near a stream that flows into Butte Creek, about 1 mile east of Butte Meadows. 1450 Comment
  CHSC29002  Darmera peltata M. S. Taylor 1980-3-19 2387 Butte In Macabes Creek, in Macabes Creek Canyon, ca. 100 ft e of Lumpkin Rd, ca. 2 1/2 mi n of its jct with Forbestown Rd, ca. 18 mi ne of Oroville. 396 Comment
  CHSC31858  Datura wrightii L. Ahart 1975-7-7 855 Butte Near home near a building; Peter Ahart Ranch, Honcut. 45 Comment
  CHSC40616  Datura wrightii Lowell Ahart 1985-9-14 5167 Butte On the east side of a building, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 33 Comment
  CHSC42720  Delphinium gracilentum Lowell Ahart 1978-4-19 1654 Butte Along the trail to Feather F alls, south of the overlook at Feather Falls, about 3 1/2 miles north of Feather Falls. 548 Comment
  CAS-BOT-BC8568  Delphinium hansenii Lowell Ahart 1989-5-31 6328 Butte Along Truex Road, near lake Oroville, about 0.25 miles north-west of the West Branch Bridge across Lake Oroville 304 Comment
  CHSC102847  Delphinium hansenii subsp. hansenii Lowell Ahart 2009-5-30 15805 Butte On the west side of Guardians Trail, about 100 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 3/8 mile (air) west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 440 Comment
  CHSC3307  Delphinium hesperium M. Gregg 1966-4-23 102 Butte 1/2 mile on the Skyway from Burtons Mesa. This is south east of Chico. On the Butte Creek side of the Skyway. Comment
  CHSC34448  Delphinium nudicaule R. E. Preston 1982-2-4 163 Butte On cliff faces, s rim of Butte Creek Canyon above Honey Run Covered Bridge, ca. 7.5 mi e of Chico. 304 Comment
  CHSC46459  Delphinium nuttallianum V. Oswald; L. Ahart 1989-6-27 3819 Butte Ridge east of Scotts John Creek, ca. 3.3 mi (air) e of Jonesville. 2042 Comment
  CAS-BOT-BC121612  Delphinium patens subsp. patens A. A. Heller 1919-5-17 13158 Butte Banks of Feather River near Stirling Comment
  CHSC56782  Delphinium patens subsp. patens M. S. Taylor 1981-4-8 3508 Butte N side of logging landing site, just w of power lines, off logging rd ca. 1/2 mi w of its jct with Ponderosa Way (Rim Rd), ca. 5 air mi n of its jct with Hwy 70 at Jarbo Gap. 883 Comment
  CHSC41525  Delphinium variegatum Richard J. Slama 1981-4-20 12 Butte Ca. 5 mi. e of Chico, ca. 3 mi. e of hwy 99 and hwy 32, ca. 2 mi. e on Humboldt Road on n side. 99 Comment
  CHSC53165  Delphinium variegatum Barbara Williams 1977-4-15 9 Butte Cana Pine Creek Road, 11.5 mi n of Chico. 100 yds w of Hwy 99. Comment
  CHSC53295  Delphinium variegatum R. A. Emmrich 1975-4-20 81 Butte Cohasset Hwy ca. 10 yds e of roadside and 4 mi n of Chico. 60 Comment
  RSA718042  Delphinium variegatum R. D. Fischer 2004-4-4 802 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the E side Hwy 32 along Guardian Trail between the Pine and Bloodypin Trails 335 Comment
  UCD95786  Delphinium variegatum D. Finley 1998-5-25 6 -2 Butte town of Oroville, Table Top Mountain, 7.4 road miles on Cherokee Rd. from Table Mountain Blvd. Intersection. 396 Comment
  UCD96667  Delphinium variegatum A. A. Heller 1918-4-19 12987 Butte 12 miles north of Chico. Comment
  CAS-BOT-BC17025  Delphinium variegatum subsp. variegatum A. A. Heller 1914-3-18 11205 Butte Hills 8 miles north of Oroville Comment
  CAS-BOT-BC82872  Dendromecon rigida A. A. Heller 1918-5-5 13010 Butte Near Magalia. Comment
  SEINET10476254  Dendromecon rigida Mary Susan Taylor 1980-5-8 Taylor 2592 Butte T24N R3E e half nw sec 33. Paradise quad. Ca. 3 mi N of Forest Ranch, ca. 1 mi E of Hwy 32; area soon to be deve loped; Yellow Pine Forest. 853 Comment
  CAS-BOT-BC192655  Deschampsia danthonioides Lowell Ahart 1982-6-15 3562 Butte Ca. 1.5 mi. E of Camp 18, ca. 8 mi E of Feather Falls 1000 Comment
  CHSC2140  Deschampsia danthonioides H. Silberman; D. Isaac 1949-4-13 Butte 1/8 mi. N. Hooker Oak, Chico. 60 Comment
  CHSC37270  Deschampsia danthonioides L. Ahart 1982-6-15 3562 Butte On a lava cap, ca. 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 1000 Comment
  CAS-BOT-BC201750  Deschampsia elongata Lowell Ahart 1983-6-21 4073 Butte Along Bloomer Hill Road, about 3/4 mile west of the Oroville Quincy Highway, about 15 miles north-east of Oroville 425 Comment
  CHSC31710  Deschampsia elongata L. Ahart 1977-6-16 1424 Butte On the banks of North Honcut Creek, Peter Ahart Ranch, Honcut. 50 Comment
  JEPS98683  Deschampsia elongata Lowell Ahart 2000-6-29 8549 Butte On the west side of Concow Road at Flea Meadow, about 1/2 mile west of Flea Mountain, about 3 1/2 miles (air) north of Concow Reservoir, about 5 miles (air) east of Magalia. 1036 Comment
  SEINET11687271  Deschampsia elongata L. Ahart, Ahart, P. 1984-1 4700 Butte about 2 mi SW of Forbestown Diversion Dam, NE of Forbestown 700 Comment
  CHSC35003  Dianthus armeria R. A. Schlising 1980-6-14 3710 Butte N of Lake Oroville along Hwy 162, 0.2 miles N of Berry Creek and 0.8 miles S of junction with Bald Rock Road. Roadside. 560 Comment
  CHSC44385  Dianthus armeria Lowell Ahart 1988-6-29 6089 Butte Along Galen Ridge Road, about 1/2 mile east of the Oroville Quincy Highway, north of Lake Madrone. 621 Comment
  CHSC88241  Dianthus armeria subsp. armeria Lowell Ahart 2004-7-11 11223 Butte On the southeast edge of Paradise Lake, about 3/4 mile northeast of the picnic area, about 1 mile northeast of Paradise Dam, about 4 miles (air) southwest of Stirling City. 814 Comment
  POM148827  Dicentra formosa subsp. formosa Helen M. Edwards 1917-06 s.n. Butte De Sabla. Comment
  CHSC19650  Dicentra formosa subsp. oregana K. R. Stern 1966-3-31 Butte From Montreal Botanical Gardens; Planted in Chico. Comment
  JEPS98294  Dichanthelium acuminatum subsp. fasciculatum Lowell Ahart 2000-6-27 8514 Butte Big Bald Rock, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 993 Comment
  RSA715725  Dichelostemma capitatum subsp. capitatum L. P. Janeway 2005-3-1 8339 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Rd. 1.8 km northeast of Bruce Road 134 Comment
  RSA333575  Dichelostemma capitatum subsp. capitatum Craig Martz, Richard F. Sannar 1982-3-16 24 Butte Along State Route 70, 1 mile N of intersection with Palermo Road, S of Oroville. 150 Comment
  CHSC33141  Dichelostemma multiflorum J. D. Jokerst 1981-5-14 1315 Butte Top of North Table Mountain at it's W edge, ca. 1/3 mi N of Cherokee Rd. 365 Comment
  CHSC90608  Dichelostemma multiflorum Jose Romero 1983-4-20 19 Butte Site on the Oroville Wildlife Area. Junction of Larkin and Timothy Roads, 4 mi southwest of Oroville. 45 Comment
  CAS-BOT-BC501079  Dichelostemma multiflorum Carl B. Wolf 1937-5-14 8664 Butte 2 1/2 miles SE of Orovill eon road to Wyandotte, Sierra Nevada Foothills 91 Comment
  CAS-BOT-BC501081  Dichelostemma multiflorum H. C. Cantelow 1940-5-10 3914 Butte SW of Oroville on Highway 24 Comment
  CAS-BOT-BC501088  Dichelostemma multiflorum A. A. Heller 1914-4-13 11287 Butte Chico-Oroville Road 11 miles from Chico Comment
  SEINET10839403  Dichelostemma multiflorum Lowell Ahart 1985-6-17 Ahart 5057 Butte Lumpkin Ridge, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. Comment
  CHSC2099  Dichelostemma volubile E. Walker 1932-6-26 Butte Magalia Heights. 731 Comment
  HSC38019  Dichelostemma volubile Thomas W. Nelson, Jane P. Nelson 1976-5-10 2479 Butte S facing slope beside Hwy. 191, 1 mi. W of Paradise Comment
  UC143025  Dichelostemma volubile Mrs. R. M. Austin May 1896 836 Butte Iron Canyon Comment
  UC1476889  Dichondra donelliana Lowell Ahart 1979-4-28 Butte banks of creek ne Honcut; Peter Ahart Ranch, North Honcut Creek 50 Comment
  CHSC116147  Digitaria sanguinalis Lowell Ahart 2015-10-26 20610 Butte Strand of Lake Oroville, on the west side of the West Branch of the Feather River, about 1 mile (air) southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. 207 Comment
  CDA34289  Diospyros lotus L. Ahart 2010-6-12 16804 Butte At the old homestead, about 100 yards south of Ten Mile House Road, about 5/8 mile (air) west of Highway 32, and about 9 miles (air) northeast of Chico. Comment
  CHSC10601  Diplacus douglasii Lowell Ahart 1961-3-16 Butte Salmon Hole. 91 Comment
  CHSC3230  Diplacus grandiflorus Virginia Hagaman 1966-5-1 159 Butte At Centerville Power House, 10.3 miles east off highway 99E on Humbug road. Comment
  SEINET8274767  Diplacus grandiflorus Unknown 1940-6-5 25672 Butte Route 24; 6 mi. up, along Feather River, above Oroville. 91 Comment
  CHSC14058  Diplacus kelloggii J. Moore 1974-5-7 Butte Collected ca. 1 mi n of Jarboe Gap, on Hwy 70, n of Oroville. Comment
  CHSC3826  Diplacus kelloggii R. L. Adams 1964-4-2 69 Butte Old road off Hwy. 32 1/4 mi. W 14 Mile House 40 yds. SE of junction. 12 mi. E. Chico. Comment
  CHSC3885  Diplacus kelloggii Susan Carrauthers 1966-3-28 82 Butte Table mountain ca. 6 mi. N. of city of Oroville. Comment
  CHSC30718  Diplacus layneae M. S. Taylor 1980-5-27 2660 Butte On Big Bald Rock, granitic dome, ca. 3 mi e of Lake Madrone. 997 Comment
  CHSC44802  Diplacus layneae R. Banchero 1980-6-16 238 Butte Along Humbolt Rd 1.9 mi SW of the jct with the Skyway, Ca 3.1 mi NE of the jct of Humbolt Rd and Hwy 32. 1414 Comment
  CHSC29393  Diplacus torreyi R. A. Schlising; S. Azevedo 1980-6-13 3698 Butte NE of Forest Ranch, 2.3 mi E and SE of Hwy32 along Garland Road (and 0.25 mi from jct latter and Ponderosa Way and Doe Mill Roads). 902 Comment
  CHSC44769  Diplacus torreyi R. Banchero 1980-6-17 246 Butte Along the Skyway 1.1 mi NE of its jct with Coutolenc Rd, 2.4 mi W of Stirling City. 865 Comment
  CAS-BOT-BC154027  Diplacus torreyi L. P. Janeway 1993-7-7 4434 Butte Along dirt road to the bear Ranch Creek falls, 0.7 mi south of Arch Rock Tunnel; canyon of North Fork Feather River 502 Comment
  CAS-BOT-BC154038  Diplacus torreyi Mrs. J. H. Morrison 1932-5-30 s.n. Butte Durham Comment
  CAS-BOT-BC154168  Diplacus tricolor H. E. Brown 1897-4-15 183 Butte Near Clear Creek Comment
  CAS-BOT-BC154171  Diplacus tricolor A. A. Heller 1914-4-24 11314 Butte Chico-Oroville road 7/8 miles from Chico Comment
  SEINET8255121  Diplacus tricolor K. L. Chambers 1991-4-30 5551 Butte junction of Hwy. 99 with Hwy. 149, between Chico and Oroville. Comment
  CHSC59367  Disporum hookeri L. P. Janeway; B. Castro 1992-4-21 4154 Butte About 200 ft north of Ram Creek and ca 1 mi east of French Creek. 670 Comment
  SEINET3450774  Distichlis spicata Lowell Ahart, Josephine Guardino, Steve Green 2003-5-27 10223 Butte Chico, Chico, about 3.5 miles east of Manzanita Avenue, about 100 yards west of the dirt road, west of Diversion Dam on Big Chico Creek, west of Parking area L, Upper Bidwell Park 120 Comment
  CAS-BOT-BC136237  Dodecatheon alpinum A. A. Heller 1915-6-11 11960 Butte Butte Meadows in the Sierra Nevada 1219 Comment
  CHSC95143  Dodecatheon alpinum R. D. Fischer 2005-6-5 856 Butte Chico Meadows. Northern Sierra Nevada, n. of Forest Ranch, 5 miles w. of Hwy 32 off Humboldt Road to Butte Meadows and ca. 3 miles n. to Chico Meadow (Camp Lassen, BSC) on Scout Road. Plant growing along eastern edge of Chico Meadow. 1280 Comment
  CHSC10822  Dodecatheon clevelandii subsp. patulum Lowell Ahart 1968-3-11 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC31198  Dodecatheon hendersonii M. S. Taylor 1980-2-17 2358 Butte Along a dirt road, ca. 1/4 mi sw of Lower Forbestown Rd, ca. 3 mi w of Forbestown. 396 Comment
  SEINET10907206  Dodecatheon hendersonii subsp. hendersonii Mary Susan Taylor, L. Hanson 1981-3-12 Taylor 3397 Butte T20N R6E sw sec 23. Forbestown quad. Along s side of 20N53.2, ca. 1 mi sw of Feather Falls community. Yellow Pine Forest; 2900 ft. 884 Comment
  SEINET10449644  Dodecatheon jeffreyi Mary Susan Taylor 1980-2-17 Taylor 2358 Butte T20N R6E ne sec 5. Along a dirt road in Yellow Pine Forest, ca. 1/4 mi SW of Lower Forbestown Road, ca. 3 mi W of Forbestown. 396 Comment
  JEPS102537  Dopatrium junceum Vernon H. Oswald 1998-10-22 9675 Butte Rice field at the northeast corner of Hamilton and Riceton roads, Rice Experiment Station northwest of Biggs. 30 Comment
  UCD123714  Dopatrium junceum June McCaskill; G. D. Barbe 1990-9-5 4395 Butte experimental fields of Rice Experiment Station, West Hamilton Road at Riceton Highway, north of Biggs. Comment
  SEINET7072737  Downingia bacigalupii A. G. Vestal 1963-5-9 s.n. Butte About 11.8 miles north of Chico. UTM Zone 10, 594162mE, 4419666mN. Coordinate datum: NAD 27.) Comment
  CHSC75360  Downingia bicornuta Jennifer Slater 1997-4-27 34 Butte In the vernal pool depression at the Wurlitzer addition of the Vina Plains Preserve, west of Highway 99, approx. 10 miles north of Chico. 67 Comment
  JEPS117214  Downingia cuspidata Lowell Ahart 2010-5-16 16690 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 371 Comment
  CHSC33700  Downingia insignis L. Ahart 1981-4-6 2748 Butte In a depression se of Graylodge Waterfowl Mgmt Area HQ, ca. 8 mi sw of Gridley. 35 Comment
  JEPS103574  Downingia ornatissima var. ornatissima Lowell Ahart 2002-4-14 9486 Butte Area between the Railroad and the Midway Road, 50 yards N of Nelson Dlavo Road, in Nelson. 36 Comment
  CAS-BOT-BC41351  Draba verna Lowell Ahart 1990-3-19 6424 Butte About 3.5 miles southwest of Oroville. Along the south side of Pacific Heights Road. 36 Comment
  UCD115555  Draba verna L. Ahart 1973-11-21 150 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC114948  Draba verna var. aestivalis Lowell Ahart 2015-2-26 19941 Butte About 30 yards east of the old paved road (Bidwell Bar - Miners Ranch Road), strand of Lake Oroville, about 1/4 mile north of Miners Ranch Reservoir, about 4 miles east of Oroville. 218 Comment
  CHSC686  Draperia systyla V. Holt 1935-5-24 Butte Butte Creek. 121 Comment
  SEINET3450953  Draperia systyla Unknown 2003-7-12 10376 Butte Oroville, Oroville, about 17 air miles northeast, west side of Milsap Bar Road, about 2.5 air miles east of the Brush Creek Work Center 1030 Comment
  CHSC51867  Drosera rotundifolia L. P. Janeway 1987-6-27 2364 Butte Large mdw on E slope of Bald Mtn along the Concow ... Field redacted by CHSC, contact the data manager for more information 1706 Comment
  CHSC116222  Drymocallis glandulosa var. glandulosa Lowell Ahart 2015-6-16 20238 Butte On the west side of the paved road, about 4 miles (by road) northwest of Fall River Bridge, about 5 1/2 miles (air) northwest of Camp 18, about 9 miles (air) northeast of Feather Falls. 1406 Comment
  UC481574  Drymocallis lactea H. F. Copeland 1931-6-11 Butte woods by Butte Creek Meadows (Jonesville); , Jonesville 1828 Comment
  CHSC12109  Dryopteris arguta J. M. Pitts 1972-4-16 133 Butte Locally abundant 100 yards se of Humbug Rd. 7.9 mi ne past Honeyrun Bridge. 426 Comment
  CHSC3432  Dryopteris arguta Judy Potter 1966-3-7 112 Butte Above Honey Run Bridge. 2.3 miles south The Skyway. Comment
  CHSC39979  Dryopteris arguta L. Ahart; P. Ahart 1983-7-24 4207 Butte At the Forbestown Reservoir, ca. 5 mi ne of Forbestown. 450 Comment
  CHSC42012  Dryopteris arguta Lowell Ahart 1975-3-7 705 Butte About 1 mile west of the Forbestown Reservoir, north-east of Forbestown. 426 Comment
  CHSC42954  Dryopteris arguta Lowell Ahart 1987-7-3 5751 Butte Along the edge of Power House Road, about 1 mile north-west of the Poe Power House, about 1 mile south-east of Jarbo Gap. 487 Comment
  CHSC92383  Dryopteris arguta Lowell Ahart 2005-11-12 12481 Butte Bank of a wash, about 90 yards northeast of the large parking area by the gate, end of Dark Canyon Road, about 3 miles (air) south of Highway 70 at Big Bend Road. 327 Comment
  UCD80276  Dryopteris arguta CNPS SN Foothill Team 2005-4-6 SNFN 0097 a Butte CDFG North Table Mountain Wildlife Area, Coal Canyon. 377 Comment
  CHSC25520  Dysphania ambrosioides Hayes; Warner 1977-9-11 61 Butte Along dirt and gravel shoulder, Hwy 32, exactly 24.6 mi e of the Hwy 99 overpass on Hwy 32 in Chico. 914 Comment
  SEINET3125710 Image available Echinochloa colona Richard R. Halse 2006-8-2 6985 Butte Chico; weedy area at edge of a driveway along Mangrove Ave. by its intersection with E. 7th Ave. 95 Comment
  CAS-BOT-BC197095  Echinochloa crus-galli Lowell Ahart 1977-7-19 s.n. Butte Peter Ahart Ranch. Honcut Comment
  CHSC41986  Echinochloa crus-galli Lowell Ahart 1986-11-14 5463 Butte On the bottom of a pond, about 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville. 36 Comment
  JEPS114996  Echinochloa crus-galli Lowell Ahart 2007-11-3 14558 Butte Along a very small stream, below the high water line of Lake Oroville, about 3/4 mile east of the Power House below Kunckle Reservoir, about 1 1/4 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise 259 Comment
  RSA29944  Echinochloa crus-galli I. L. Wiggins 1928-9-9 3338 Butte Sandy Gulch Creek, 3 miles west of Chico Comment
  SEINET10509321  Echinochloa crus-galli Mary Susan Taylor 1979-11-11 Taylor 2284 Butte T20 N R1E. Ca. 6 mi S of Chico, on W side of Goodspeed-Watt Road. With Jim Jokerst. 34 Comment
  CHSC66452  Echinodorus berteroi Vernon H. Oswald; Lowell Ahart 1996-6-10 7763 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Vernally flooded slough near the center of the E side of Tract 5 (W side of dike at the SW corner of Tract 6), Sanctuary I. 30 Comment
  SBBG120012  Elaeagnus angustifolia L. Ahart 2006-8-29 13239 Butte ca. 100 yards N of the Headquarters, Gray Lodge Wildlife Area 20 Comment
  CHSC112425  Elatine ambigua Lowell Ahart 2013-6-5 18723 Butte About 30 yards north of Lower Honcut Road, about 1 3/4 miles west of Honcut. 26 Comment
  CHSC113536  Elatine ambigua Lowell Ahart 2014-9-28 19881 Butte Peter Ahart Ranch, about 2 1/4 miles north and 1/2 mile east of Honcut. 33 Comment
  CHSC42129  Elatine rubella Lowell Ahart 1984-5-8 4596 Butte About 2-1/2 mies north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CAS-BOT-BC113635  Eleocharis acicularis E. B. Copeland 1929-7-19 344 Butte Jonesville, in very wet, grassy glade. 1550 Comment
  CAS-BOT-BC113461  Eleocharis bella Herbert Faulkner Copeland 1920-8-20 212 Butte Butte Creek Meadow Comment
  CHSC31926  Eleocharis bella J. D. Jokerst; B. Banchero, R. A. Schlising 1980-6-16 842 Butte N of and adjacent to Humboldt Rd, 0.1 mi W of its junction with Skyway, community of Butte Meadows. 1341 Comment
  CHSC45168  Eleocharis bella Lowell Ahart 1984-5-7 4591 Butte Near Kunkle Creek and a new road, about 1/2 mile north of Kunkle Reservoir, about 2 mles south of Paradise. 548 Comment
  UC1609054  Eleocharis bella Lowell Ahart 1993-7-13 7065 Butte 12 mi S of Oroville (bottom of a deep wash, Peter Ahart Ranch, 1 1/2 mi N and 1 mi E of Honcut) 36 Comment
  CDA38943  Eleocharis macrostachya T. C. Fuller 1976-7-8 20147 Butte Biggs Rice Exp. Station, 5 km. north of Biggs. 0 Comment
  UCSB63783  Eleocharis macrostachya Ahart, Lowell 1998-7-18 Butte T20N, R4E, southeast 1/4 Section 8; along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 408 Comment
  JEPS120890  Eleocharis montevidensis Lowell Ahart 2013-7-6 18837 Butte E side of North Honcut Creek, at the end of the Lower Duck Hole, Peter Ahart Ranch, about 1 mile N and 2.75 miles E of Honcut, about 13 air miles SE of Oroville. Comment
  JEPS98699  Eleocharis obtusa Lowell Ahart 2000-9-4 8685 Butte Along the west margin of a large pond on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CDA2610  Eleocharis pachycarpa L. Ahart 2000-8-3 8676 Butte Southeast of a large pond, about 100 yards south of the Feather River, west of the break in the levee, about 1/2 mile (air) west of Pacific Heights Road, Oroville Wildlife Area, about 3 1/3 miles (air) southwest of Oroville. Comment
  CHSC117404  Eleocharis pachycarpa B. Castro; Tom Boullion, Jessica Boyt 2008-10-21 1771 Butte Sacramento Valley. Ca 3.5 mi SE of Chico, 3 mi NE of Durham, near W edge of Butte Creek ca 0.5 mi upstream of its crossing under the Oro-Chico Hwy. 57 Comment
  JEPS98547  Eleocharis pachycarpa Lowell Ahart 2000-7-18 8597 Butte On the margins of a small pond, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. 42 Comment
  CAS-BOT-BC113212  Eleocharis parishii Holm 1903-5-30 3280 Butte Chico Comment
  CHSC44930  Eleocharis parishii Lowell Ahart 1988-7-24 6125 Butte Along the bottom of a road gutter, about 100 yards south of the intersection of Forbestown Road and Black Bart Road, about 1 mile west of Robinson Mill Road. 731 Comment
  CHSC78566  Eleocharis parishii Lowell Ahart 2000-9-4 8682 Butte North of a large pond on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC45178  Eleocharis quinqueflora Lowell Ahart 1970-4-4 39 Butte On the bottom of a small wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/2 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  HSC97772  Eleocharis quinqueflora L. Ahart 2000-5-28 8408 Butte N margin of large wash 200 yds. E of road crossing, Peter Ahart Ranch, 1.5 mi. N and 1.25 mi. E of Honcut, 12 mi. SE of Oroville 37 Comment
  CHSC64240  Eleocharis suksdorfiana S. C. Morey 1983-8-1 647 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC49634  Elodea canadensis Vernon Oswald 1988-5-19 3325 Butte Feenstra's Riverview Orchard located at the w end of Cana Hwy between the s half of Cana Lake (on Dicus Slough) and the Sacramento River. In a marchy pond located along an old chanel of the Sacramento River. 45 Comment
  CHSC47644  Elymus caput-medusae Lowell Ahart 1979-6-2 1912 Butte Wash, in one of the farmed fields, Peter Ahart Ranch, about 2 1/2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC47616  Elymus glaucus Lowell Ahart 1977-6-13 1410 Butte On the banks of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC39310  Elymus multisetus Lowell Ahart 1983-6-26 4114 Butte Along Ponderosa Way, about 1/8 mile east of the intersection of the Oroville Quincy Highway and Ponderosa Way, about 15 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 500 Comment
  CHSC34035  Elymus stebbinsii subsp. septentrionalis L. Ahart 1981-7-7 2928 Butte Hillside, ca. 1/2 mi w of the Forbestown Reservoir, ne of Forbestown. 750 Comment
  CHSC44172  Elytrigia elongata V. Oswald; L. Ahart 1988-7-29 3634 Butte Ca. 3 mi (air) se of Jonesville on Humbug Rd, ca. 0.3 mi w of Butte Creek House at the logging road southward to Summit Lake and Snow Mtn. Roadside. 1755 Comment
  CAS-BOT-BC227813  Ephedra gerardiana Gerald L. Vertrees 1960-7-8 s.n. Butte U.S.D.A. Plant Introduction Station, Chico Comment
  SD3258  Epilobium angustifolium E. B. Copeland 1930-7-21 Butte Jonesville 1600 Comment
  CHSC24805  Epilobium brachycarpum E. L. Rilla 1976-9-18 29 Butte .5 mi s of Gridley Rd on Pennington Rd in the Gray Lodge Waterfowl Management Area. Bench Marker 72, 1 mi directly w of collection area. 21 Comment
  CHSC40590  Epilobium brachycarpum Lowell Ahart 1985-10-12 5201 Butte Near the boat ramp, at the end of Nelson Bar Road, about 1 mile south of Kunkle Reservoir, about 3 miles south of Paradise. 301 Comment
  CAS-BOT-BC166846  Epilobium canum subsp. latifolium M. S. Taylor 1982-8-16 5017 Butte S side of jct of Big Kimshew Creek and Bald Mt - Ramsey Bar Rd (52513), ca. 4 air mi ne of Stirling City 1432 Comment
  CHSC12075  Epilobium canum subsp. latifolium R. N. Bowman 1971-10-17 58 Butte Found growing on embankment along Hwy. 70, ca. 4.1 mi. w. of Bear Creek Falls, in the Feather River Canyon. 762 Comment
  UC1564743  Epilobium canum subsp. latifolium V. Oswald and L. Ahart 1989-8-15 3946 Butte ca 2 air mi e Philbrook Reservoir (outcrop between High Lakes Rd and Carr Mine) 1920 Comment
  CHSC111163  Epilobium ciliatum subsp. ciliatum Lowell Ahart 2012-6-21 18205 Butte On the south sife of Big Chico Creek, about 200 yards east of the dam at Sycamore Pool, Lower Bidwell Park, Chico. 62 Comment
  CHSC113122  Epilobium ciliatum subsp. ciliatum Lowell Ahart 2013-11-17 19265 Butte Along the sides of McCabe Creek, below the high water line of Lake Oroville, about 5/8 of a mile southwest of the Enterprise Bridge across Lake Oroville. 245 Comment
  CHSC69723  Epilobium ciliatum subsp. ciliatum Lowell Ahart 1997-10-20 7932 Butte On sand bars, on the west side of the sharp bend in the South Fork of the Feather River, about 1/4 mile north of the bridge across the river, about 3/4 mile north of the Golden Trout Crossing, 3 miles (air) northwest of Sly Creek Reservoir Dam. 914 Comment
  RSA769816  Epilobium ciliatum subsp. ciliatum L. P. Janeway, B. Castro 2009-7-4 9839 Butte Northern High Sierra Nevada. Along Four Trees Road 3.4 road km east of Coyote Gap; at head of minor drainage into Clear Creek, head of French Creek Basin. 1469 Comment
  JEPS122084  Epilobium ciliatum subsp. glandulosum Lowell Ahart 2014-7-13 19653 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir Comment
  CHSC102619  Epilobium densiflorum Lowell Ahart 2009-7-9 16027 Butte On the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  CHSC43149  Epilobium densiflorum R. Banchero; R. Schlising, M. Merryman 1979-10-7 48 Butte 7.7 mi S from intersection of Ord Ferry Road and Dayton Road, south of Chico; along canal. Comment
  POM213943  Epilobium hallianum H. F. Copeland 1934-7-9 s.n. Butte Region of Jonesville, near the source of Butte Creek 1829 Comment
  UC600550  Epilobium lactiflorum H. F. Copeland 1932-8-19 Butte springs near crest of ridge S.E. of head of Butte Creek; Jonesville 2000 Comment
  CHSC12170  Epilobium minutum Lowell Ahart 1973-5-6 Butte Near Challenge. 762 Comment
  RSA126006  Epilobium minutum E. K. Balls 1957-5-22 22512 Butte N. fork Feather River, above Camp Rogers, on trail to Buck s Lake. 655 Comment
  CHSC28378  Epilobium obcordatum M. S. Taylor; J. Jokerst 1979-7-21 2149 Butte Humboldt Peak, at Humboldt Summit. 2151 Comment
  RSA0045590  Epilobium pallidum Lowell Ahart 2012-5-31 18124 Butte About half way between Salmon Hold trail and Parking Area O, Upper Bidwell Park. 122 Comment
  CHSC95134  Epilobium pygmaeum Lowell Ahart 2006-11-12 13543 Butte Unfarmed rice field, Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 30 Comment
  CHSC103720  Epilobium torreyi Lowell Ahart 2010-5-14 16659 Butte Area of erosion control, Disc Golf Area, about 100 yards west of the entrance to the Disc Golf Area, about 120 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 372 Comment
  CHSC46383  Epilobium torreyi Lowell Ahart 1989-5-23 6232 Butte Along the edge of a new subdivision road, 1/4 mile east of Dunstone Drive, about 1/2 mile north of Bangor Park Road. 76 Comment
  CHSC52093  Epilobium torreyi R. A. Schlising 1979-5-30 3424 Butte Richvale vernal pools, 1/4 mile S of jct Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Edges of pools. Comment
  SFV6  Equisetum hyemale subsp. affine M. L. Vincent 1962-4-15 182 Butte Sierra Nevada 1 mile south of Stirling City on the Skyway near small stream. 975 Comment
  SD122514  Eragrostis cilianensis Lowell Ahart 1984-10-5 4813 Butte Peter Ahart Ranch, circa 1.5 miles North and 1.7 miles East of Honcut, circa 12 miles South of Oroville. 49 Comment
  CHSC49239  Eragrostis curvula var. curvula Vernon Oswald 1984-5-9 1174 Butte Between Chico and Forest Ranch on Hwy 32, 6.7 mi n-e of Calif. Hwy 99. On the edge of the road. 411 Comment
  CHSC51376  Eragrostis hypnoides Vernon Oswald; Lowell Ahart 1990-10-11 4462 Butte Dark Canyon arm of Lake Oroville, about 4 miles south of Jarbo Gap. On the bed of Dark Creek, below the high water line of the lake. 243 Comment
  CHSC83072  Eragrostis hypnoides Lowell Ahart 2002-10-17 10001 Butte Bottom of a wash, between the gentle hills below the high water line of Lake Oroville, about 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. 227 Comment
  RSA518700  Eragrostis hypnoides L. Ahart 1990-9-30 6599 Butte along the edges of Lake Oroville, below the high water line of lake Oroville, below Canyon Creek Bridge across Lake Oroville 229 Comment
  CHSC49242  Eragrostis mexicana subsp. virescens Vernon Oswald 1988-8-8 3686 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. In irrigation ditch bordering Nelson Rd. 47 Comment
  SEINET10831621  Eragrostis mexicana subsp. virescens John Thomas Howell 1959-9-20 Howell 34675 Butte Lower foothills, eastern outskirts of Oroville. 61 Comment
  CAS-BOT-BC284085  Eragrostis pectinacea var. pectinacea John Thomas Howell 1959-9-20 34687 Butte Eastern outskirts of Oroville, Sierra Nevada 60 Comment
  CHSC51038  Eragrostis pectinacea var. pectinacea Lowell Ahart 1990-7-15 6558 Butte Along a small stream, below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/4 mile north-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  CHSC88924  Eragrostis pectinacea var. pectinacea Lowell Ahart 2004-9-14 11402 Butte On the east side of Palermo Honcut Highway, about 20 feet south of Palermo Road, east part of Palermo. 57 Comment
  SD122515  Eragrostis pectinacea var. pectinacea Lowell Ahart 1984-9-24 4811 Butte Along edge of Middle Honcut Road, circa 3/4 mile East of Highway 70, circa 12 miles South of Oroville 35 Comment
  SEINET256565 Image available Eragrostis pilosa Lowell Ahart 5202 Butte At the end of Nelson Bar Road, about 1 mile south of Kunkle Reservoir, about 3 miles south of Paradise 302 Comment
  CHSC76430  Eragrostis pilosa var. pilosa Lowell Ahart 1999-10-28 8307 Butte On the west side of a pond, along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  JEPS122262  Eragrostis pilosa var. pilosa Lowell Ahart 2014-9-23 19872 Butte On the northeast part of Horseshoe Lake, about 100 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. Comment
  UC1609016  Ericameria bloomeri Lowell Ahart 1993-9-8 7170 Butte ridge top about 1 mi e Snow Mountain 2103 Comment
  CAS-BOT-BC296819  Erigeron divergens Mrs. J. H. Morrison 1932-5-8 s.n. Butte Durham Comment
  CHSC58251  Erigeron divergens Lowell Ahart 1992-5-9 6757 Butte Along the dirt road, on the north side of the Thermalito Diversion Pool, Lake Oroville Recreation Area, about 2 1/2 miles west of Oroville Dam. 76 Comment
  CHSC58883  Erigeron glacialis var. glacialis Lowell Ahart 1992-7-26 6855 Butte Along a stream, about 1/2 mile north of the Carr Mine, about 2 (air) miles south of Snow Mountain. 1798 Comment
  CHSC109619  Erigeron philadelphicus var. philadelphicus Lowell Ahart 2012-5-25 18114 Butte Northwest of the interesection of W. Frances Willard Avenue and Arcadian Avenue, one block south of Chico High School, Chico. 59 Comment
  CHSC35968  Eriodictyon californicum M. S. Taylor 1982-5-23 4514 Butte Scattered on n side of Hwy 70, e side of Arch Rock Tunnel, ca. 1/2 mi sw of Butte-Plumas county line. 487 Comment
  CHSC39792  Eriodictyon californicum Eloise Gallatin 1935-5-17 Butte Fern Bank Comment
  JEPS123874  Eriodictyon californicum Lowell Ahart 2015-4-30 20123 Butte About 1/4 mile south of Forbestown Reservoir Road, about 2 1/2 miles (air) northeast of Forbestown. Comment
  CHSC46695  Eriogonum lobbii R. A. Schlising; L. Janeway, B. Castro 1988-7-30 4642 Butte N part of county, on Snow Mountain ridge; in open area of decomposing andisitic outcrops. 2072 Comment
  CHSC61327  Eriogonum lobbii Lowell Ahart 1993-7-31 7143 Butte On the south side of the dirt road that leads to Ramsey Bar, about 1/2 mile north of Ramsey Bar. 1371 Comment
  CAS-BOT-BC259402  Eriogonum luteolum John Thomas Howell 1967-6-22 42618 Butte Magalia 701 Comment
  UC426902 Image available Eriogonum marifolium var. apertum E. B. Copeland 1930-7-12 410 Butte above Jonesville; ; above Jonesville, Butte Co. 2000 Comment
  CAS-BOT-BC261462  Eriogonum nudum var. nudum John Thomas Howell; Gordon H. True 1967-7-12 43384 Butte N. Fk. Feather River near Cresta Powerhouse 426 Comment
  CHSC38610  Eriogonum nudum var. pubiflorum Vernon Oswald 1982-11-6 8 Butte Bidwell Park, Chico. Beside Yahi Trail ca. 800 ft e of Salmon Hole. 158 Comment
  CHSC39140  Eriogonum nudum var. pubiflorum R. A. Schlising 1982-7-21 4333 Butte N part of county, S of Philbrook Reservoir, on rock outcrops. 1853 Comment
  RSA726310  Eriogonum roseum L. Ahart 2007-7-24 14390 Butte About 200 yards west of the high gravel road (at turn, before washout), about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. 36 Comment
  CHSC45370  Eriogonum spergulinum var. reddingianum Vernon Oswald; Lowell Ahart 1987-6-10 2980 Butte Forest Service road joining Humbug Rd. in about the center of Section 22, in the first drainage e of Humbug Rd. 1874 Comment
  POM219116  Eriogonum spergulinum var. reddingianum E. B. Copeland 1931-7-11 s.n. Butte Jonesville, ridge between Jones and North Willow Creeks. 1700 Comment
  SEINET782824 Image available Eriogonum umbellatum var. ahartii J. L. Reveal 1975-8-24 3977 Butte Along California Highway 70 in Feather River Canyon at the turnoff to Pulga Comment
  UCD101499  Eriogonum umbellatum var. speciosum John Thomas Howell 1959-9-26 35090 Butte at Pulga Bridge, North Fork Feather River. 417 Comment
  SEINET10838771  Eriogonum umbellatum var. speciosum Taylor 1981-7-10 Taylor 4063 Butte T22n, r5e. Ne sec 6. Pulga quad. N side of feather river hwy 70 at pulga bridge, On large serpentine outcrop about 20 mi ne of oroville. Corolla yellow. 488 Comment
  UC726280  Eriogonum ursinum A. A. Heller 1938-5-28 15116 Butte 23 mi from Oroville (along the Feather River Highway e of Jarboe Pass) Comment
  CHSC29389  Eriogonum ursinum var. ursinum R. A. Schlising; R. Banchero 1980-6-5 3643 Butte N of Lake Oroville along Hwy 70, south of the Pulga Crossing of North Fork, Feather River. 609 Comment
  JEPS115266  Eriogonum vimineum Lowell Ahart, John Dittes, Josephine Guardino 2008-11-8 15440 Butte On the bottom of Lindo Channel, about 100 yards west of the diversion structure, north of Hooker Oak, Upper Bidwell Park, Chico 68 Comment
  CHSC94347  Eriophorum gracile Lowell Ahart 2006-7-16 12981 Butte In a bog, in the west edge of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  CDA4964  Eriophyllum lanatum var. achilleoides T. C. Fuller 1958-7-7 1909 Butte Highway 40 Alt., 0.1 mile north of bridge, North Fork Feather River, 1 mile south of Pulga. 0 Comment
  CAS-BOT-BC308147  Eriophyllum lanatum var. grandiflorum Lowell Ahart 1985-5-15 4997 Butte 1/8 mile east of the dirt road 1 1/2 miles north-east of Concow Res. 800 Comment
  CHSC21274  Eriophyllum lanatum var. grandiflorum M. S. Taylor 1975-5-30 394 Butte On the n side of Upper Bidwell Park Rd, ca. 3 mi e of Golf Course, Upper Bidwell Park, Chico. 121 Comment
  CHSC42466  Eriophyllum lanatum var. grandiflorum Lowell Ahart 1987-5-22 5666 Butte About 1/4 mile south-east of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  HSC38026  Eriophyllum lanatum var. grandiflorum Thomas W. Nelson, Jane P. Nelson 1976-5-10 2491 Butte Beside Skyway, 2 mi. W of Paradise Comment
  CHSC33689  Erodium cicutarium L. Ahart 1981-3-29 2712 Butte Along the edge of Ponderosa Way, near the Ponderosa Dam, near Forbestown. 350 Comment
  CHSC669  Erodium moschatum E. Canfield 1904-5-10 Butte Hooker Oak field. 76 Comment
  UC874922  Eryngium castrense Lewis S. Rose 1939-6-5 39198 Butte Honcut 30 Comment
  CHSC29105  Erythranthe bicolor M. S. Taylor; J. D. Jokerst 1980-4-27 2551 Butte On n side of Ponderosa Way, ca. 1/2 mi e of Nimshew Rd, ca. 1 mi s of Nimshew. 609 Comment
  CHSC44827  Erythranthe bicolor R. Banchero 1980-4-26 132 Butte Along the Cohasset Hwy 4.9 mi NE of its jct with Keefer Rd, 1.3 mi SW of the town of Cohasset. 445 Comment
  CHSC20489  Erythranthe cardinalis M. S. Taylor 1975-6-25 798 Butte Along Mud Creek, ca. 1 mi n of Richardson Springs Hotel, ca. 6 mi ne of Chico. 121 Comment
  CHSC110631  Erythranthe glaucescens Christopher T. Ivey; Jenn Coughlan 2013-5-17 383 Butte Centerville Rd. about 1 km N of Honey Run bridge. Roadside ditch on W side of road. 115 Comment
  CHSC62829  Erythranthe glaucescens Ella Icard 1893-1-1 Butte Comment
  CHSC113517  Erythranthe guttata Lowell Ahart 2014-7-7 19588 Butte East side of the dirt road and in the gutter, about 1/2 mile (air) north of Philbrook Reservoir. 1745 Comment
  CHSC3884  Erythranthe guttata Gerry Carrauthers 1966-3-21 67 Butte Coal Canyon Rd. Ca. 15 mi S.E. of city of Chico. Comment
  CHSC40891  Erythranthe guttata Lowell Ahart 1985-6-17 5056 Butte 100 yards south of the dirt road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 975 Comment
  CHSC43761  Erythranthe lewisii Vernon Oswald 1987-6-29 3034 Butte Jones Meadow Rd. e of Inskip at Last Chance Creek. 1560 Comment
  CHSC20117  Erythranthe microphylla M. S. Taylor 1975-4-26 534 Butte SE corner of Kunkle Reservoir, ca. 1/4 mi e of Pentz-Magalia Hwy, ca. 1 mi s of Paradise. 609 Comment
  SD7068  Erythranthe primuloides Mrs. R. M. Austin 1883-1 Butte Butte Co. Comment
  CHSC43962  Erythranthe pulsiferae Vernon Oswald 1988-5-30 3347 Butte Humbug Rd. 1.0 mi s of Nimshew. 627 Comment
  CHSC31848  Erythronium multiscapideum L. Ahart 1977-3-28 1231 Butte Along North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC32641  Erythronium multiscapideum M. S. Taylor; L. Hanson 1981-3-31 3457 Butte N side of spur rd, ca. 1/10 mi w of its jct with Ponderosa Way (Rim Rd, rd to Flea Valley), ca. 5 mi ne of its jct with Hwy 70 at Jarbo Gap. 792 Comment
  CHSC32853  Erythronium multiscapideum William Askea 1981-4-22 11 Butte Ca. 50 m w of Butte Creek and 1.2 km n of Magalia Reservoir, 2.5 km n of Magalia. 725 Comment
  CHSC79870  Erythronium multiscapideum Leanna Brown 1999-4-27 71 Butte Eastern shore of Paradise Lake. 753 Comment
  CAS-BOT-BC504531  Erythronium multiscapideum Lowell Ahart 1980-3-26 2052 Butte Along Swedes Flat Road, near Bangor Comment
  CAS-BOT-BC504538  Erythronium multiscapideum M. S. Taylor 1981-4-21 3551 Butte W side and downslope from spur rd (to Old Utah Mine) off Ponderosa Way (Jordan Hill Rd) ca. 1 air mi ne of Magalia 853 Comment
  CHSC99545  Erythronium purpurascens L. P. Janeway 2008-6-15 9418 Butte Northern High Sierra Nevada. Along Concow Road 1.1 road km southwest of Philbrook Road; north-facing slopes above the east end of Philbrook Reservoir. 1729 Comment
  CHSC1190  Eschscholzia caespitosa V. Holt 1935-5-15 Butte Salmon on Chico creek. 152 Comment
  HSC23330  Eschscholzia californica L. Walk 1971-4-9 3 Butte S bank of stream, .5 mi. SE of Keefer Rd., 1.5 mi. E of Hwy. 99, Chico 30 Comment
  CAS-BOT-BC419498  Eschscholzia lobbii H. E. Brown 1897-4-15 149 Butte Near Clear Creek 53 Comment
  CAS-BOT-BC419502  Eschscholzia lobbii A. A. Heller 1938-4-14 15027 Butte Summit of Table Mountain Comment
  CHSC30972  Eschscholzia lobbii Joann Lacey 1979-3-16 5 Butte Ca. 1.1 mi ne of jct of Humboldt Rd. and Stilson Canyon Rd., ca. 3.9 mi ne of Chico. 129 Comment
  CHSC3564  Eschscholzia lobbii R. D. Briggs 1966-3-6 63 Butte North end of Bidwell Park golf course, Chico. Comment
  CHSC88970  Eschscholzia lobbii Christine Hantelman 2000-3-23 22 Butte On firebreak on south side of Wookey road, 1/8 mi west of driveway at end of road. 112 Comment
  HSC32611  Eschscholzia lobbii R. A. Vanbianchi 1974-4-20 228 Butte Table Mtn. 305 Comment
  UCD95350  Eschscholzia lobbii Curtis Clark 1975-4-20 474 Butte Cherokee Road, 6 miles NE of junction with Table Mountain Road. Comment
  SEINET10475036  Eupatorium occidentale Mary Susan Taylor, Lowell Ahart 1981-8-16 Taylor 4206 Butte T25N R5E ne 1/4 sw 1/4 sec 21. Jones- ville SW quad. N side of 25N04, near upper Big Kimshew Creek, ca. 2 mi SE of Philbrook Reservoir, ca. 6 mi NE of Stirling City. Red Fir Forest. 6400 ft. 1950 Comment
  UCR188567  Euphorbia maculata George K. Helmkamp, E. A. Helmkamp 2007-10-7 13063 Butte Northern Sacramento Valley, East Gridley Road at the west edge of the Feather River bridge 27 Comment
  CHSC48380  Euphorbia peplus Vernon Oswald 1987-3-26 2297 Butte Butte Creek Reserve on the e side of the Skyway and n side of Butte Creek. Between some ponds in dredger tailings. 73 Comment
  SEINET10453782  Euphorbia serpillifolia Lowell Ahart 1990-10-21 Ahart 6637 Butte Below the high water line of Lake Oroville, about 1 mile north of Nelson Bar Road, about 1/2 mile west of Gold Flat. Foothill Woodland (destroyed). T21N R4E NWS5. 213 Comment
  CHSC93936  Festuca californica L. P. Janeway 2006-5-28 8641 Butte Northern High Sierra Nevada. Open serpentine bowl on west side of Concow Road about 3.2 mi northeast of the upper end of Concow Reservoir. 860 Comment
  CAS-BOT-BC278301  Festuca californica subsp. californica V. Oswald; L. Ahart 1988-6-17 3398 Butte North side of the dam at Lost Creek Reservoir 1005 Comment
  CHSC88159  Festuca occidentalis Lowell Ahart 2004-7-23 11298 Butte On the sides of a small stream, about 20 yards northwest of the dirt road to the West Branch Campground, about 50 yards southeast of the intersection of Humbug Road and Philbrook Reservoir Road, about 1 3/4 miles (air) west of Philbrook Reservoir Dam, about 3 miles (air) southeast of Butte Meadows. 1586 Comment
  CHSC61369  Festuca subulata Lowell Ahart 1993-7-23 7107 Butte On the sides of a stream, south of Fall River, about 1/8 mile south of the campgrounds on the large gravel bar along Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  HSC95791  Festuca subulata L. Ahart 1997-7-11 7756 Butte Southeast of Cold Creek, 2 air mi. southwest of Bald Mountain, ~ 9 mi. by road from Stirling City, or ~ 2 air mi. northeast of Stirling City 1220 Comment
  SEINET10507969  Festuca subuliflora Lowell Ahart 1991-6-19 Ahart 6660 Butte Along the south side of the dirt road that goes to the Forbestown Reservoir, about 1 1/2 miles southwest of Forbestown Reservoir. Yellow Pine Forest. T19N R7E NW/S5. 610 Comment
  CHSC76015  Fimbristylis autumnalis Lowell Ahart; Vernon H. Oswald 1999-8-13 8145 Butte Large disturbed area along the east side of the Sacramento River, northwest of Parrot Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC95182  Fragaria virginiana R. D. Fischer 2005-6-5 826 Butte Chico Meadows. Northern Sierra Nevada, n. of Forest Ranch, 5 miles w. of Hwy 32 off Humboldt Road to Butte Meadows and ca. 3 miles n. to Chico Meadow (Camp Lassen, BSC) on Scout Road. Plant growing along eastern edge of Chico Meadow. 1280 Comment
  HSC104007  Frangula californica subsp. tomentella L. Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-17 18072 Butte Chico, Lower Bidwell Park; along a horse trail, ~50 ft. south of Vallombrosa Ave., ~ 0.25 mi. W of Peterson Drive 76 Comment
  CAS-BOT-BC53824  Frangula rubra A. A. Heller 1914-5-18 11404 Butte Between Chico and Forest Ranch, 14 miles from Chico. 731 Comment
  CHSC46073  Frangula rubra J. D. Jokerst; R. Schlising, M. Foster 1983-5-24 1779 Butte Occasional in Yellow Pine Forest along Bean Creek Rd 4/5 mile east of Little Bald Rock. Comment
  CHSC54322  Frankenia salina Vernon H. Oswald 1991-6-16 4665 Butte West Liberty Rd, 1.0 mile west of Pennington Rd, on the north edge of Gray Lodge. Roadside. 20 Comment
  RSA795644  Fraxinus dipetala L. Ahart 2012-4-20 17896 Butte West side of South Rim Trail, about 5/8 miles west of Highway 32, about 8.5 miles northeast of Chico, south part of Upper Bidwell Park. 255 Comment
  UC196270  Fraxinus dipetala A. A. Heller 11405 Butte between the 14 Mile House and Forest Ranch 731 Comment
  CHSC40036  Fritillaria affinis R. M. Austin 1896-2-1 Butte Near Chico. Comment
  CHSC52379  Fritillaria affinis B. Castro 1991-3-3 439 Butte Above bend in Cohasset Rd ca 3.5 mi E of its jcn with Richardson Sprs Rd. 268 Comment
  UC143424  Fritillaria affinis Mrs. R. M. Austin Feb, 1896 15 Butte Comment
  CHSC49653  Fritillaria atropurpurea Vernon Oswald 1985-6-3 1805 Butte Rd. 26N27 0.3 mi s of Humboldt Rd. ne of Jonesville. 1633 Comment
  CHSC2282  Fritillaria pluriflora N. Maxwell 1929-3-4 Butte Near Shasta Union School. 60 Comment
  RSA32885  Fritillaria recurva A. A. Heller 1939-4-26 15386 Butte Near Stirling Comment
  CHSC4192  Galium aparine L. R. Alexander 1967-4-7 14 Butte Found in abundance ca. 75 yds. S of covered bridge on Humbug Rd. 91 Comment
  CHSC113436  Galium bolanderi Lowell Ahart 2014-7-7 19569 Butte Along the east side of the Skyway, about one-mile south of Inskip. 1449 Comment
  CHSC37262  Galium parisiense L. Ahart 1982-6-15 3582 Butte Ca. 1.5 mi E of camp 18, ca. 8 mi E of Feather Falls. 1000 Comment
  POM319644  Galium parisiense Patricia Wilder 1971-6-23 5177 -a Butte Magalia. N of Paradise. Coutelenc Road just N of the jct with Skyway Road along railroad track. Sierra Nevada Mtn range. W branch of the Feather River. 732 Comment
  SEINET10869781  Galium parisiense Mary Susan Taylor 1980-5-31 Taylor 2750 Butte T22N R4E sw sec 31. Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 2 mi SE of Paradise. With R.A. Schlising and L. Ahart. 442 Comment
  SEINET10869772  Galium parisiense var. leiocarpum Lowell Ahart 1991-5-12 Ahart 6652 Butte On the banks of a small wash, Peter Ahart Ranch, about 1 1/4 miles north and 2 1/2 miles east of Honcut, about 12 miles southeast of Oroville. Foothill Woodland. T17N R4E S11. 49 Comment
  CHSC39927  Galium porrigens var. tenue M. S. Taylor; V. Oswald 1984-4-4 5374 Butte Along Humbug Rd, ca. 0.5 mi E of Honey Run Covered Bridge, ca. 6 air mi E of Chico. 182 Comment
  CHSC55406  Galium porrigens var. tenue Charlie Crannell 1991-4-22 9 Butte 10.4 mi NE of Chico near Hwy 32. 243 Comment
  JEPS9392  Galium sparsiflorum subsp. sparsiflorum Rimo Bacigalupi with R. Hauke and Geo. Bacigalupi 1954-7-15 4725 B Butte 0.4 mi below Nimshew (along Butte Canyon side, on Nimshew (Humbug) Rd) 701 Comment
  CHSC32843  Galium tricornutum S. Scott 1981-4-24 Butte 1 km E of Manzanita Ave and Centenial Ave jct, 2.5 km E of Chico. 97 Comment
  CHSC64218  Galium trifidum var. pacificum S. C. Morey 1983-7-24 622 Butte Cherry Hill Meadow. On N side of Humboldt Rd., ca. 3.2 mi E of Butte Meadows. 1414 Comment
  CHSC50648  Gamochaeta stachydifolia Lowell Ahart 1990-4-28 6466 Butte In the burrow area, about 1/4 mile south of the Feather River, about 4/10 mile west of Pacific Heights Road, about 4 1/2 miles south-west of Oroville. 30 Comment
  CAS-BOT-BC169931  Garrya fremontii John Thomas Howell 51082 Butte In Upper Sonoran Zone on volcanic rock, about 2 miles from Paradise on Skyway to Chico 396 Comment
  CAS-BOT-BC169938  Garrya fremontii E. B. Copeland 1932-7-27 667 Butte Jonesville 502 Comment
  RSA724925  Garrya fremontii L. P. Janeway, Dan Lubin 2006-5-3 8573 Butte Northern High Sierra Nevada; south side of the ridge between Sawmill Peak and Jordan Hill Road; 600 meters east-southeast of the Sawmill Peak Lookout. 954 Comment
  CAS-BOT-BC282599  Gastridium phleoides Lowell Ahart 1977-5-21 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  CDA2175  Gastridium phleoides L. Ahart 2003-6-2 10295 Butte Peter Ahart Ranch, about 12 miles SE of Oroville; about 1 1/2 miles N and 2 miles E of Honcut. Comment
  CHSC65212  Gastridium phleoides Lowell Ahart 1995-5-30 7584 Butte Along the edge of the dirt road, south of Beatson Hollow, about 1/8 mile north of Cherokee Road, North Table Mountain, about 7 miles north of Oroville. 335 Comment
  SBBG583  Gastridium phleoides A. A. Beetle 1941-6-27 2744 Butte 2 mi N of Lone Pine Forest Guard Stn, St Hwy 32 Comment
  SEINET191205 Image available Gastridium phleoides A. A. Beetle 1941-6-27 2744 Butte Lone Pine Forest Guard Station: 2 miles north of route 32 Comment
  CAS-BOT-BC278703  Gastridium ventricosum Lowell Ahart 1983-6-21 4063 Butte Along Bloomer Hill Road, ca. 1/8 mi. W of the Oroville Quincy Highway, 1.25 mi. S of the Berry Creek School, NE of Oroville 400 Comment
  JEPS108157  Gaultheria ovatifolia L. P. Janeway 1994-7-19 4696 Butte Northern High Sierra Nevada. South side of Cascade Creek 0.4 mi east of confluence with South Branch Middle Fork Feather River 1179 Comment
  CHSC37448  Gayophytum humile R. A. Schlising; R. Banchero 1980-7-7 3860 Butte E of village of Feather Falls on Lumpkin Ridge, just W of road dropping down to Fall River. 1280 Comment
  UC1564782  Gayophytum humile V. Oswald and L. Ahart 1989-6-27 3818 Butte ridge e Scotts John Creek (ca 3.3 air mi e of Jonesville) 1981 Comment
  CHSC81038  Gayophytum racemosum Vernon H. Oswald 2001-7-16 10051 Butte Butte Creek House Ecological Reserve east-southeast of Jonesville. 1775 Comment
  CHSC103656  Genista monspessulana Lowell Ahart 2010-4-9 16577 Butte Along the northwest side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. 38 Comment
  CHSC115425  Genista monspessulana Ariana Gehrig 2013-4-30 Butte Paradise Lake, Magalia. Along pathway. 783 Comment
  UC600680  Gentianella amarella subsp. acuta E. B. Copeland 1929-7-28 Butte Jonesville Butte Creek (meadow by Butte Creek) 1500 Comment
  CHSC109001  Geranium carolinianum Lowell Ahart 2012-4-30 17945 Butte On the south side of the path, near the sign, southwest of the intersection of Vallombrosa Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. 80 Comment
  UCD103290  Geranium carolinianum L. Ahart 1982-4-21 3290 Butte Peter Ahart Ranch. Near North Honcut Creek, about 1 1/4 miles north and 3 miles east of Honcut. 50 Comment
  CHSC111373  Geranium dissectum Lowell Ahart 2012-5-2 17968 Butte On dark clay soil, on the sides of a depression, under the Government Pole Line, about 100 yards west of the Easter Cross Parking Lot, Upper Bidwell Park, about 1 mile east of Chico. 90 Comment
  RSA0045624  Geranium dissectum Lowell A. Ahart 2012-4-30 17926 Butte 20 yards north of the table at the old homestead, about 20 yards southeast of the intersection of South Rim Trail and Ten Mile House Road, about 5/8 mile west of Highway 32, about 9 miles (air) northeast of Chico, south part of Upper Bidwell Park. 250 Comment
  JEPS107362  Geranium molle Lowell Ahart, Paul Maslin, John Dittes 2005-3-17 11650 Butte Big Chico Creek Ecological Reserve. Burned area, south of the fence, on the east side of the very poor dirt road, about 1/8 mile northwest of the Indian Cave, about 3/4 mile west of Big Chico Creek, about 4 1/2 miles (air) northeast of Chico 481 Comment
  JEPS117289  Gilia capillaris Lowell Ahart 2010-9-21 17208 Butte About 70 yards east of the poor dirt road, about 80 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir 1917 Comment
  RSA774147  Gilia capillaris L. Ahart 2010-9-21 17208 Butte About 70 yards east of the poor dirt road, about 80 yards west of Big Kimshew Creek, about 1.5 air miles NE of Jones Meadow, about 2.5 air miles SE of Philbrook Reservoir. 1918 Comment
  CHSC41372  Gilia capitata subsp. mediomontana R. A. Schlising; R. Banchero 1980-6-12 3693 Butte 0.25 mi S of Tehama County line on Highway 32 near Lomo. 1121 Comment
  CHSC41370  Gilia capitata subsp. pedemontana R. A. Schlising 1980-6-2 3621 Butte N of village of Forest Ranch, along Highway 32. 1005 Comment
  CHSC87575  Gilia capitata subsp. pedemontana R. D. Fischer 2004-4-20 126 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Patch located approx. midway along Humboldt Trail. 426 Comment
  CHSC52451  Gilia tricolor Ken R. Pearson 1983-4-14 9 Butte Ca 120 m NW of Rock Cr, 0.5 km E of Meridian Rd, 6.7 km NNW of Chico. 67 Comment
  UCD117967  Gilia tricolor M. Vincent 1965-4-16 626 Butte Pentz Road, 0.5 mile east of Pentz School. Comment
  CAS-BOT-BC266483  Githopsis diffusa A. A. Heller; H. E. Brown 1902-5-8 5491 Butte Berry Canyon [near Clear Creek] Comment
  CAS-BOT-BC266591  Githopsis pulchella Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CHSC96221  Githopsis pulchella subsp. campestris R. Fischer 2006-5-20 978 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east -side addition along Hwy. 32. Plants growing on eroded mudflow of a hillside drainage at the northern end of the Humboldt Trail, adjacent Hwy. 32. 441 Comment
  JEPS98445  Githopsis pulchella subsp. campestris Lowell Ahart 2000-5-31 8422 Butte 3 mi SE of Paradise (a serpentine ridge, about 200 yds E of where Kunkle Creek enters Lake Oroville, E of the Kunkle Power House) 335 Comment
  JEPS108821  Githopsis specularioides Lowell Ahart 2006-5-8 12600 Butte Steep bank on the south side of a small stream, about 50 yards east of the fence and reservoir, about 2 1/4 miles west of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 296 Comment
  SEINET10464591  Githopsis specularioides Watts 1974-4-30 Watts 29 Butte About 15 miles northeast of Chico on Cohasset road Comment
  CDA3379  Glinus lotoides L. Ahart 2002-10-17 9982 Butte About 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. On the gentle hills below the high water line of Lake Oroville. Comment
  SEINET10537439  Glinus lotoides Lowell Ahart 1990-10-5 Ahart 6628 Butte On the bottom of McCabe Creek, below the high water line of Lake Oroville, about 1/4 mile south-west of the Enterprise Bridge across Lake Oroville. Foothill Woodland (destroyed). T19N R6E NW/S7. 229 Comment
  JEPS120567  Glyceria declinata B. Castro and L. P. Janeway 2012-4-15 10805 Butte Northern High Sierra Nevada Foothills. North Table Mountain; along the main drainage to the Fern Falls branch of Coal Canyon about 0.6 creek km east of the Falls. Comment
  CHSC49550  Glyceria elata Vernon Oswald 1987-6-23 3009 Butte Philbrook Rd. at the bridge over the W. Branch of the Feather River. On the flood plain of the stream. 1511 Comment
  UCD85123  Glyceria elata August L. Hormay Date Unknown s.n. Butte 3 miles below Butte Meadow on creek. Comment
  SEINET10475276  Gnaphalium beneolens Lowell Ahart 1983-9-17 Ahart 4435 Butte Along edge of dirt road, ca. 2.5 mi s of Stirling City. Yellow Pine Forest; 1100 m. 1100 Comment
  SEINET10473776  Gnaphalium chilense Mary Susan Taylor 1975-4-25 Taylor 503 Butte Ca. 20 mi NE of Chico on Cohasset Rd, ca. 0.5 mi N of the horse trough. Comment
  CHSC28621  Gnaphalium palustre M. S. Taylor 1979-10-2 2211 Butte On Sacramento River, at Chico Landing, ca. 5 mi w of Chico. 30 Comment
  UCD80064  Gnaphalium palustre CNPS SN Foothill Team 2005-5-4 SNFN 0199 b Butte City of Chico, Bidwell Ranch, about 1.33 miles northwest of the end of Wildwood Road. 88 Comment
  SEINET10474254  Gnaphalium purpureum Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4688 Butte Along edge of a new subdivision road ca. 1 mi SE of Hurleton, 1/12 mi E of Oak Grove Cemetary, ca. 10 mi E of Oroville; Foothill Woodland; 500 m. 500 Comment
  UC601006  Goodyera oblongifolia E. B. Copeland 1938-9-13 Butte Jonesville Comment
  POM180883  Goodyera oblongifolia H. F. Copeland 1924-8-10 857 Butte Jonesville. Comment
  SEINET10470040  Goodyera oblongifolia Mary Susan Taylor 1978-9-9 Taylor 1908 Butte Along Bull Run Road, ca. 10-11 mi S of Butte Meadows in northern portion of the county; Yellow Pine Forest. 1463 Comment
  CHSC116723  Gratiola ebracteata Lowell Ahart 2016-5-24 20874 Butte Low place in flood plain, on the bottom of a large drainage, about 50 yards north of the ditch, about 150 yards south of La Porte Road, about 1/4 mile southwest of the intersectionof La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. 44 Comment
  CHSC30677  Gratiola ebracteata M. S. Taylor; J. D. Jokerst 1980-3-28 2399 Butte Just e of Chico, ne corner of jct of Notre Dam Blvd and the Skyway, ca. 1.8 mi e of Hwy 99. 68 Comment
  JEPS113891  Grindelia hirsutula L. P. Janeway 2007-6-27 9077 Butte Northern High Sierra Nevada; Plumas National Forest; along Road 28 at Road 22N01; ridgetop between Swayne Hill and Chino Ridge; 3.7 air km N-NE of the mouth of French Creek at the North Fork Feather River arm of Lake Oroville. Along edge of old but well-used dirt road. 832 Comment
  CHSC44633  Grindelia squarrosa var. serrulata Vernon Oswald 1987-9-1 3229 Butte Humboldt Rd. 2.0 mi ne of Lomo, near the benchmark. Edge of the road. 1381 Comment
  UC196299  Hackelia californica A. A. Heller 1914-8-7 11657 Butte Summit back of Jonesville 2133 Comment
  CHSC37412  Hackelia micrantha R. A. Schlising 1982-7-21 4331 Butte Meadow n of Philbrook Res. in n part of county. 1706 Comment
  CAS-BOT-BC508210  Hastingsia alba H. F. Copeland 1920-8-21 215 Butte Ridge above Butte Creek in Spring Comment
  JEPS119545  Hedera helix Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17861 Butte East of the Deer Pen, south of Table 12, Lower Bidwell Park, Chico. Comment
  JEPS118035  Hedypnois rhagadioloides Lowell Ahart 2011-5-22 17356 Butte West edge of North Honcut Creek, about 2 1/2 miles north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville 58 Comment
  CHSC43615  Helianthus annuus Vernon Oswald 1983-6-22 756 Butte Beside Calif. Hwy. 32, 5.8 mi n-e of its junction with Calif. Hwy. 99 in Chico. 304 Comment
  CHSC25336  Helianthus bolanderi M. P. Hayes 1977-8-13 31 Butte Wash on Butte College Campus, along Williams Road. Comment
  UCR219090  Helianthus bolanderi George K. Helmkamp, E. A. Helmkamp 2009-9-5 15581 Butte Sacramento Valley, Lower Honcut Road, 1.2 miles east of its junction with CA-70, 1.85 mi. WSW (258 deg. ) of Honcut, 7.2 mi. SE (114 deg. ) of Gridley 35 Comment
  CHSC27976  Heliotropium europaeum M. S. Taylor 1978-8-11 329 1/2 Butte In field, ca. 50 ft e of River Rd, opposite washout on Sacramento River, ca. 10 mi w of Chico. 30 Comment
  CHSC44378  Helminthotheca echioides Lowell Ahart 1988-6-23 6060 Butte Along the east side of Wyandotte Miners Ranch Road, about 1/2 mile south of Olive Highway, about 5 miles south-east of Oroville. 259 Comment
  CHSC33891  Hemizonella minima M. S. Taylor 1981-5-13 3700 Butte On ridge above Foreman Creek, ca. 0.5 mi w of 23N15.5, ca. 1.5 mi s of its jct with Four Trees Rd, ca. 2 air mi w of Elks Retreat on Oroville-Quincy Hwy. 1310 Comment
  CAS-BOT-BC314992  Hemizonella minima M. S. Taylor 1981-5-13 3700 Butte On ridge above Foreman Creek, ca. 0.5 mi. W of 23N15 ca. 1.5 mi. S of its jct. with Four Trees Road, ca. 2 air mi. W of Elks Retreat on Oroville-Quincy Hwy. 1310 Comment
  CHSC30761  Hemizonia congesta subsp. luzulifolia M. S. Taylor 1980-8-15 3249 Butte Ca. 0.5 mi n of Oroville, on w side of Cherokee Rd, on se slope of South Table Mt. 243 Comment
  UCD132993  Hemizonia congesta subsp. luzulifolia B. Castro 1987-9-25 226 Butte ca. 50 feet east of Hwy 99 ca. 4 miles north of East Biggs Road; at a pumping station just west of the Thermalito Afterbay levee. 32 Comment
  RSA95063  Hemizonia fitchii F. W. Peirson 1923-7-21 3901 Butte North of Chico. Comment
  CHSC44869  Hesperevax acaulis var. robustior Lowell Ahart 1979-5-29 1907 Butte Near a dirt road, about 1/2 mile east of Kunkle Creek, about 2 1/2 miles south-east of Paradise. 457 Comment
  CHSC60653  Hesperevax acaulis var. robustior Vernon H. Oswald; James Snowden 1993-4-7 5250 Butte SE side of the creek draining Hamlin Canyon, NE of the cattle barns on the McKnight Ranch, E side of Hwy. 99 between Durham-Pentz and Neal roads, S of Chico. 91 Comment
  CAS-BOT-BC310155  Hesperevax caulescens Mrs. C. C. Bruce 1897-5-1 2112 Butte Fields near Chico Comment
  JEPS29508  Hesperevax caulescens R. F. Hoover 1937-5-18 2229 Butte 3 mi e Richvale Comment
  SEINET11842157  Hesperevax caulescens Unknown 1979-1 17 Butte ca 0.5 mi N of Pine Creek, NW of Singer Creek, 7 mi NW of Nord on Cana-Pine Creek Road 56 Comment
  CHSC93374  Hesperocnide tenella Lowell Ahart 2006-4-27 12535 Butte Peter Ahart Ranch, about 1 1/4 miles north and 1 1/4 miles east of Honcut. 45 Comment
  CHSC58673  Hesperolinon californicum M. Bailey 1991-5-25 Butte Growing on thin soils on a slope on Butte College campus, ca 300 ft east of Williams Road, nw portion of the campus. 83 Comment
  JEPS32279  Hesperolinon californicum Mrs. R. M. Austin April, 1896 194 Butte plains near Chico Comment
  CHSC101168  Heterocodon rariflorum Lowell Ahart 2009-5-15 15699 Butte About 60 yards northwest of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 2/3 mile (air) west of Highway 32, about 10 miles northeast of Chico. 267 Comment
  SEINET10460720  Heterocodon rariflorum Taylor 1980-5-27 Taylor 2718 Butte North side of Bald Rock Road, about 1 miles east of Lake Madrone 671 Comment
  CHSC64131  Heteromeles arbutifolia Michael Deal 1992-4-19 6 Butte Private property, 449 Castle Drive, w of Laurel St., Paradise. 609 Comment
  UC114259  Heteromeles arbutifolia Mrs. R. M. Austin Jun 1887 Butte Comment
  CAS-BOT-BC311025  Heterotheca oregona var. compacta M. S. Taylor 1980-9-26 3340 Butte In Lindo Channel, jct of Mangrove & Cohasset, in Chico 45 Comment
  CDA25404  Heuchera micrantha G. D. Barbe, T. C. Fuller 1982-6-14 3683 Butte Highway 70 in Feather River Canyon, above Pulga, 1.6 miles below PG&E power plant. Comment
  POM92886  Heuchera micrantha C. C. Bruce 1897-05 2041 Butte Butte Creek. Comment
  SBBG17116  Heuchera micrantha M. Vincent 1962-4-18 209 Butte near Feather River at Hells Town Comment
  RSA0062976  Heuchera micrantha var. erubescens L. Ahart 2009-5-23 15738 Butte East side of Big Chico Creek, on the west side of Ten Mile House Road, Upper Bidwell Park, about 3/4 air mile west of Highway 32, about 10 miles northeast of Chico. 234 Comment
  UC114811  Heuchera micrantha var. erubescens Mrs. R. M. Austin Mar 1896 673 Butte Little Chico Canyon Comment
  CAS-BOT-BC55328  Hirschfeldia incana John Thomas Howell 1962-6-16 37570 Butte Sierra Nevada. Magalia. 731 Comment
  CHSC42703  Hirschfeldia incana Lowell Ahart 1987-5-6 5509 Butte On a gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 274 Comment
  CHSC79971  Hirschfeldia incana L. P. Janeway; B. Castro 1999-6-4 6455 Butte Sacramento Valley. 30 Comment
  OBI69218  Hirschfeldia incana Kari Fisher 2000-10-7 5 Butte Lindo Channel, 100 ft from E First Street 82 Comment
  UC866223  Hoita macrostachya Lewis S. Rose 1939-6-7 39239 Butte 3 mi s Pulga; North Fork of Feather River 609 Comment
  CHSC62107  Hoita orbicularis L. P. Janeway 1993-7-2 4425 Butte Plumas National Forest. Open serpentine area above Rd 22N84 0.45 mi west of Stony Creek and 1.45 mi west of Rd 23N28 (the road from Swanye Hill to Big Bar Mtn). 926 Comment
  JEPS46114  Hoita orbicularis Duncan Dunning 1922-7-18 Butte n Pulga; Flea Valley Comment
  CDA2179  Holcus lanatus L. Ahart 2000-7-17 8594 Butte Peter Ahart Ranch, about 12 miles (air) southeast of Oroville. about 1 1/2 miles north and 1 1/2 miles east of Honcut, Comment
  JEPS116004  Holcus lanatus Lowell Ahart 2009-6-19 15937 Butte Along trail, on the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 203 Comment
  JEPS120759  Holocarpha virgata Lowell Ahart 2013-9-5 19022 Butte On west side of La Porte Road, about 1/4 mile SW of Dunstone Drive, about 2 1/3 air miles northeast of Huncut Comment
  CAS-BOT-BC280824  Hordeum Lowell Ahart 1981-5-16 2744 Butte Along edge of the road on the Gray Lodge Waterfowl Management Area, 11 mi. SW of Gridley 35 Comment
  UC600749  Hordeum brachyantherum subsp. brachyantherum H. F. Copeland 1932-8-14 Butte Jonesville Butte Creek (Butte Creek) 1500 Comment
  CAS-BOT-BC285087  Hordeum marinum subsp. gussoneanum Lowell Ahart 1980-4-29 2120 Butte Peter Ahart Ranch, Honcut 50 Comment
  JEPS117881  Hordeum murinum subsp. glaucum L. P. Janeway 2008-4-2 9248 Butte East edge of City of Chico Cascade Range Foothills (slope on north side of Humboldt Road 2.9 km northeast of Bruce Road) 167 Comment
  CHSC42916  Hordeum murinum subsp. leporinum Lowell Ahart 1987-7-3 5782 Butte On a gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CAS-BOT-BC143347  Horkelia californica var. elata John Thomas Howell 1961-9-22 36748 Butte Feather River Highway 3 miles from Oroville Comment
  CAS-BOT-BC536585  Horkelia californica var. elata Lowell Ahart 1984-5-28 4647 Butte 2 miles south of Old Yankee Hill. About 1 1/4 miles north-east of the West Branch Bridge, about 16 miles north-east of Oroville. 914 Comment
  CAS-BOT-BC536256  Horkelia tridentata var. tridentata A. A. Heller 1913-6-7 10793 Butte Near Stirling 1036 Comment
  CHSC52441  Hosackia oblongifolia var. oblongifolia L. P. Janeway 1987-6-27 2359 Butte Mdw on E slope of Bald Mtn along the Concow Rd. 1694 Comment
  HSC104003  Hypericum anagalloides L. Ahart 2011-7-9 17575 Butte About 15 air mi. NE of Oroville, ~ 2 air mi. SE of Brush Creek, ~ 3/8 mi. NE of Little Bald Rock, SE edge of large open bare granite area 975 Comment
  SBBG128726  Hypericum anagalloides L. Ahart 2011-7-9 17575 Butte seeps, SE edge of large open bare granite area, ca. 3.8 mi NE of Little Bald Rock, ca. 2 mi (air) SE of Brush Crk, ca. 15 mi (air) NE of Oroville 974 Comment
  CHSC51366  Hypericum formosum var. scouleri Vernon Oswald 1990-9-11 4448 Butte Marsh located about 1.5 miles south-southeast of Brush Creek. Occasional on the swampy meadow. 960 Comment
  UC1563293  Hypericum mutilum L. Ahart 1990-10-3 6627 Butte ca. 1/4 mi. n.e. Canyon Creek Bridge across Lake Oroville (bottom of E. Fork Canyon Creek); Lake Oroville 259 Comment
  CHSC39498  Hypericum perforatum Lowell Ahart 1983-6-21 4072 Butte Found growing on dry red rocky soil along Bloomer Hill Road, about 3/4 mile west of the Oroville-Quincy Highway, about 15 miles north-east of Oroville. Section 6. 425 Comment
  CHSC38364  Hypochaeris glabra Vernon Oswald 1983-3-31 234 Butte Upper Bidwell Park, Chico, ca. 300 ft n of Upper Park Rd. near Parking Area R (Yahi Trail to Brown's Hole); about 2.3 mi e of the power lines. 243 Comment
  SEINET10473838  Hypochaeris glabra Mary Susan Taylor 1981-4-28 Taylor 3569 C Butte T23N R5E sw sec 32 to T22N R5E ne sec 5 Pulga SW quad. Along Four Trees Rd, ca. 0.5 to 1 mi E of Hwy 70, ca. 2-3 mi NE of Pulga. Yellow Pine Forest; 2200-2400 ft. 670 Comment
  UC879867  Ipomopsis aggregata A. A. Heller 1917-7-29 12857 Butte summit above Jonesville 2133 Comment
  CAS-BOT-BC133550  Iris hartwegii John Thomas Howell 1962-6-16 37557 Butte Magalia 731 Comment
  CHSC2201  Iris hartwegii subsp. hartwegii W. Reed 1939-5-1 Butte Paradise 548 Comment
  CHSC29031  Iris macrosiphon J. D. Jokerst 1980-3-28 526 Butte E of the northern most portion of North Table Mt. 365 Comment
  CHSC90188  Iris macrosiphon Camela J. Ott 1989-4-11 7 Butte Ca. 100 m ne of covered bridge, along e bank of Centerville Rd. 10.2 km ese of Chico. 120 Comment
  UC600579  Isoetes bolanderi H. F. Copeland August, 1924 543 Butte Butte Creek house Jonesville Comment
  CHSC43572  Isoetes nuttallii Vernon Oswald 1984-2-22 1083 Butte Upper Bidwell Park, Chico, ca. 100 ft n of Upper Park Rd. at Diversion Dam. 134 Comment
  SEINET10470697  Isoetes nuttallii Lowell Ahart 1985-5-10 Ahart 4945 Butte East branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. Comment
  CHSC60643  Isoetes orcuttii Vernon H. Oswald 1993-4-15 5271 Butte Upper Bidwell Park, Chico, in the vernal pool located at the SE corner of the fenced enclosure along the north boundary, somewhat E of the junction of Wildwood Ave. and Upper Park Rd. 85 Comment
  CHSC31450  Isolepis setacea L. Ahart 1980-7-29 2509 Butte In the gutter along Lower Forbestown Rd or Ponderosa Way, ca. 1/4 mi n of the jct of Forbestown Rd and Robinson Mill Rd, w of Forbestown. 228 Comment
  CHSC39527  Isolepis setacea Lowell Ahart 1983-6-12 4047 Butte In a small meadow, about 1 mile south of Crystal Hill, near Oregon Gulch, near Lake Oroville, about 7 miles south-west of Feather Falls. 425 Comment
  CHSC51025  Isolepis setacea Lowell Ahart 1990-7-15 6564 Butte Along a small stream, below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/4 mile north-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  CHSC743  Juglans californica var. hindsii J. Foster 1928-4-20 Butte Chico. 57 Comment
  CHSC93648  Juglans californica var. hindsii Paul Kirk; Joe Silveira 2001-5-25 2 Butte Rancho Llano Seco, 1.8 km WSW of ranch house, just off the ranch road south of 'The Lagoon' around Ryan Island. 30 Comment
  CDA37214  Juncus acuminatus CDFA Staff 2004-7-1 s.n. Butte Thermalito Afterbay. 0 Comment
  JEPS113326  Juncus articulatus L. P. Janeway, Marcia Waterway, Martin Lechowicz 2006-8-3 8823 Butte Northern High Sierra Nevada. Old pond below Lumpkin Ridge Road about 10 km east of Feather Falls and about 1.0 km southwest of Lumpkin Ridge Road junction with road to Cascade and Fall River; near head of western branch of Know-nothing creek. Comment
  CHSC27576  Juncus bufonius var. bufonius Robert Schlising 1978-5-17 3263 Butte Magalia; serpentine outcrop just S of Magalia Res. And crossed by S. T. RR and Coutelenc Road. 670 Comment
  CHSC38917  Juncus bufonius var. bufonius Vernon Oswald 1983-6-7 646 Butte Upper Bidwell Park, Chico, on the north slope near the head of the stream which crosses Upper Park Rd. 0.5 mi e of the power lines. 198 Comment
  CHSC47530  Juncus bufonius var. bufonius Lowell Ahart 1980-5-4 2214 Butte About 150 feet south-west of the intersection of Forbestown Road and Hurleton Swedes Flat Road, about 1/2 mile south-east of Hurleton. 548 Comment
  CHSC99321  Juncus bufonius var. bufonius Lowell Ahart 2008-5-30 14803 Butte Along a small drainage, below the high water line of Lake Oroville, about 300 yards east of the Enterprise Boat Launch Area, about 10 1/2 miles (air) northeast of Oroville. 223 Comment
  CHSC26722  Juncus capitatus M. S. Taylor; M. Hayes 1978-4-14 1565 Butte On e side of Williams Rd, ca. 1/4 mi n of Pentz Rd, on Butte College campus, ca. 15 mi s of Chico. 30 Comment
  CHSC55455  Juncus capitatus L. P. Janeway 1991-4-21 3914 Butte About 1 mi south of Wyandotte and 1/2 mi west of Dunstone Road. 175 Comment
  CHSC108321  Juncus covillei Lowell Ahart 2011-8-19 17640 Butte On the north side ofa good forest road and in the west gutter of a secondary road, about 1/2 mile north of the Lost Creek Reservoir Dam, about 4-1/2 miles (air) north of Clipper Mills. 1266 Comment
  CHSC78334  Juncus dubius Lowell Ahart 2000-6-29 8537 Butte On the west side of Concow Road at Flea meadow, about 1/2 mile west of Flea Mountain, about 3 1/2 miles (air) north of Concow Reservoir, about 5 miles (air) east of Magalia. 1036 Comment
  JEPS114882  Juncus effusus subsp. pacificus Lowell Ahart 2008-7-23 15141 Butte On the east side of Sucker Creek, about 5 yards north of where Sucker Creek enters the South Fork of the Feather River, below the high water line of Lake Oroville, about 1/4 mile west of the Ponderosa Dam 258 Comment
  RSA726664  Juncus effusus subsp. pacificus L. Ahart 2007-7-2 14248 Butte 30 yards south of Oroville Dam Boulevard, about 1/4 mile southwest of the old overlook, about 4 miles (air) northeast of Oroville. 166 Comment
  SBBG121547  Juncus effusus subsp. pacificus L. Ahart 2007-7-2 14248 Butte ca. 30 yards S of Oroville Dam Blvd, ca. 0.25 mi SW of old overlook, ca. 4 mi NE of Oroville 166 Comment
  CDA34642  Juncus effusus var. pacificus L. Ahart 2009-6-3 15980 Butte About 55 yards southeast of the gate, about 45 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. Comment
  JEPS120032  Juncus exiguus Lowell Ahart 2012-6-21 18211 Butte On the south side of Big Chico Creek, about 300 yards east of the dam at Sycamore Pool, Lower Bidwell Park, Chico. Comment
  CHSC99000  Juncus kelloggii Lowell Ahart 2008-5-30 14794 Butte Dry to damp granite soil, small meadow, bottom of an old gold mined area, about 150 yeards west of the cemetery, about 150 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville. 305 Comment
  CHSC113938  Juncus laccatus Lowell Ahart 2014-8-13 19701 Butte On the bottom of a small drainage, south of the intersection of Humbug Summit Road and Philbrook Road, about 2 miles (air) northwest of Philbrook Reservoir. 1597 Comment
  JEPS122156  Juncus laccatus Lowell Ahart 2014-8-13 19701 Butte South of the intersection of Humbug Summit Road and Philbrook Road, about 2 miles (air) northwest of Philbrook Reservoir. Comment
  CAS-BOT-BC312671  Juncus leiospermus John Thomas Howell 1978-4-17 52836 Butte Table Mountain 381 Comment
  CHSC27060  Juncus leiospermus var. ahartii Lowell Ahart 1978-5-1 1692 Butte Peter Ahart Ranch, Honcut. On the bottom of vernal pools and swales in a farmed field. 50 Comment
  CHSC113239  Juncus leiospermus var. leiospermus Lowell Ahart 2014-4-20 19392 Butte About 1 1/8 miles northwest of the parking area on the west side of Cherokee Road, about 7 miles (air) north of Oroville. 350 Comment
  JEPS104444  Juncus leiospermus var. leiospermus Lowell Ahart 2003-5-28 10230 Butte Edges of a large vernal pool, ca 100 feet w of Hendricks ditch, ca 1 3/4 mi nw of the iron gate and fence, nw of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 271 Comment
  CAS-BOT-BC110772  Juncus mertensianus Lowell Ahart 1984-7-19 4755 Butte About 0.5 mile east of Bald Mountain, about 5 miles northeast of Stirling City. 1750 Comment
  CHSC44831  Juncus nevadensis J. D. Jokerst; R. A. Schlising 1982-10-7 1659 Butte Along the edges of the West Branch of the Feather River. Coon Hollow at its west end where forest service rd. 27N74 crosses the river. 1615 Comment
  JEPS117670  Juncus nevadensis Lowell Ahart 2010-9-28 17259 Butte On wet humus, on the south edge of a 10 acre meadow, about 100 yards east of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrood Reservoir 1886 Comment
  UC600801  Juncus nevadensis H. F. Copeland 1932-8-17 Butte Jonesville 2000 Comment
  CDA28692  Juncus occidentalis L. Ahart 2008-6-13 14816 Butte East side of a small meadow, bottom of an old gold mined area, about 150 yards west of the cemetery, about 150 yards north of Oregon Gulch, about 10 miles (air) northeast from Oroville. Elevation: 1021 (GPS) feet. 0 Comment
  CHSC78343  Juncus oxymeris Lowell Ahart 2000-6-17 8486 Butte In seeps, about 1/4 mile northeast of Kunkle Reservoir, east of the Pentz Magalia Road, about 2 miles south of Paradise. 548 Comment
  CHSC57213  Juncus parryi L. P. Janeway 1987-7-5 2455 Butte At end of old logging road east of the Concow Road and 1.0 mi southwest of Jones Meadow. At granite outcroppings overlooking Balsam and Big Kimshew Creeks. 1798 Comment
  CHSC96916  Juncus patens Lowell Ahart 2007-7-2 14246 Butte On the north side of Big Ridge Road, about 20 yards south of Minnie Creek, about 1 1/2 miles east of the Oroville Quincy Highway, about 10 miles (air) northeast of Oroville. 680 Comment
  CAS-BOT-BC278768  Juncus tenuis Peter F. Zika 2011-7-7 25541 A Butte Near parking for Big Bald Rock Trailhead, 0.2 air miles E of Big Bald Rock, northern Sierra Nevada Highlands (n SNH) 1050 Comment
  CHSC102839  Juncus tenuis Lowell Ahart 2009-6-19 15919 Butte About 60 yards northwest of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 2/3 mile (air) west of Highway 32, about 10 miles northeast of Chico. 267 Comment
  JEPS113747  Juncus usitatus Lowell Ahart 2007-7-11 14291 Butte About 100 yards west of the high gravel road (at turn, before washout), about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville 35 Comment
  CHSC37066  Juncus xiphioides L. Ahart 1982-9-29 3838 Butte Along banks and edges of small stream, along Pinkard Creek, ca. 1.5 mi n of Lost Creek Reservoir Dam, ca. 3.5 mi nw of Strawberry Valley. 1200 Comment
  CAS-BOT-BC80920  Juniperus californica Lowell Ahart 1983-4-10 3922 Butte about 1 1/2 miles north-east of HIghway 99 & Pentz Road 100 Comment
  CAS-BOT-BC80923  Juniperus californica A. A. Heller 1939-12-10 15486 Butte Nearl road toward Paradise about 1 1/2 miles above the Oroville road junction Comment
  UC725516  Juniperus californica A. A. Heller 1939-12-10 15486 Butte Neal road above a mile from the junction with the Oroville road 137 Comment
  CAS-BOT-BC235680  Keckiella breviflora var. glabrisepala Mrs. C. C. Bruce 1898-5-1 2008 Butte Unspecified Comment
  CHSC61016  Keckiella breviflora var. glabrisepala Lowell Ahart 1993-6-26 7041 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  RSA293267  Keckiella lemmonii D. C. Michener 1980-8-4 3778 Butte Northern Sierra Nevada. Immediately along the Feather River, 2.9 miles south of the Plumas Co line. [Along CA 70.] 550 Comment
  CHSC43739  Kelloggia galioides Vernon Oswald 1983-7-6 815 Butte Near Humboldt Rd. (to Butte Meadows) 2.0 m NE of its jct. with Calif. Hwy. 32. 1386 Comment
  LA208506  Kelloggia galioides E. B. Copeland; 1930-8-10 Butte Jonesville 1550.0 Comment
  JEPS95924  Kickxia elatine Lowell Ahart 1999-8-13 8132 Butte northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  UC1594708  Koeleria phleoides Lowell Ahart 1992-5-9 6754 Butte about 1 1/2 mi w Oroville Dam (on the n side of the Thermalito Diversion Pool, Lake Oroville Recreation Area); Lake Oroville Recreation Area, Thermalito Diversion Pool 76 Comment
  CHSC33693  Kumlienia hystricula L. Ahart 1981-4-29 2717 Butte Along edges of a small stream near Ponderosa Dam, near Forbestown. 500 Comment
  CHSC25446  Kyhosia bolanderi Marc Hayes; Warner 1977-9-11 77 Butte Ca. 150 m n of Humboldt Road between Butte Meadows and Jonesville, exactly 8.4 mi from the junction with Hwy 32. 1219 Comment
  CHSC75309  Kyllinga brevifolia Lowell Ahart 1999-5-24 8082 Butte Along the steps on the south side of the building, Butte County Historical Society museum, 2335 Baldwin Avenue, Oroville. 60 Comment
  CAS-BOT-BC340448  Lactuca saligna Lowell Ahart 1978-9-28 s.n. Butte Peter Ahart Ranch, Honcut 150 Comment
  UCD133541  Lactuca serriola L. E. Hazeltine 1916-7-1 s.n. Butte Chico. Comment
  UC292612  Lagophylla dichotoma Hartweg 1848-1-1 1793 Butte Sacramento Valley Comment
  CHSC30752  Lagophylla glandulosa M. S. Taylor 1980-8-15 3251 Butte Ca. 0.5 mi n of Oroville, on w side of Cherokee Rd, on se slope of South Table Mt. 243 Comment
  CHSC32137  Lagophylla glandulosa L. Ahart 1972-10-4 143 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC341305  Lagophylla glandulosa H. M. Hall 1914-8-1 9829 Butte Foothills near Bidwell Bar, (Mt. Ida) Comment
  CAS-BOT-BC337909  Lasthenia californica Mrs. J. H. Morrison 1932-3-20 s.n. Butte Durham Comment
  UC472261  Lasthenia californica subsp. californica Francis Ramaley 1917-5-6 11213 Butte near Chico Comment
  UCSB63629  Lasthenia chrysostoma Richard Ernenwein 1995-10-23 135 Butte collected 2.3 mi E, along the S-side of Humboldt Road, E of Chico U S Highway 99 - Humboldt Road, , and Chico Comment
  CAS-BOT-BC354124  Lasthenia fremontii H. E. Brown 1897-4-15 153 Butte Near Clear Creek. 53 Comment
  CHSC56753  Lasthenia fremontii J. D. Jokerst 1980-3-26 Butte East side of Chico; 100 m northeast of junction of Bruce Road and Skyway. Comment
  HSC85968  Lasthenia glaberrima J. Hunter 1986-4-12 49 Butte Vacant lot within the city of Chico, ca. 45 m NW of the intersection of East Ave. and Ceanothus 62 Comment
  SEINET10475229  Lasthenia glabrata Mary Susan Taylor 1975-4-11 Taylor 422 A Butte Ca. 1/4 mi E of Salmon Hole, between Chico Creek and Upper Bidwell Park Rd, Upper Bidwell Park, Chico. Associates: Quercus spp., Pinus sabiniana, Galium aparine, Brodiaea hyacinthina. Foothill Woodland. 183 Comment
  CHSC57806  Lathyrus cicera Vernon H. Oswald; John Dittes 1992-4-28 4925 Butte Near the southern end of Libby RD in SE Paradise. 469 Comment
  JEPS88907  Lathyrus hirsutus Lowell Ahart 1994-6-6 7311 Butte about 3.5 mi (air) nw Oroville (n of the corral, on the n side of the bend in Cottonwood Road, about 0.25 mi w of Highway 70) 57 Comment
  JEPS98328  Lathyrus hirsutus Lowell Ahart 2000-6-17 8483 Butte 2 mi S of Paradise (about 1/4 mi NE of Kunkle Reservoir, E of the Pentz Magalia Road) 548 Comment
  SEINET10451847  Lathyrus jepsonii subsp. californicus Mary Susan Taylor 1978-7-21 Taylor 1833 Butte On N side of Oroville-Quincy Hwy, in open meadow, ca. 1 mi S of Butte-Plumas County line; Yellow Pine Forest. 1341 Comment
  JEPS107297  Lathyrus jepsonii var. californicus Lowell Ahart 2005-4-14 11699 Butte On the west bank of a deep ditch, east of the railroad tracks, north of Spruce Street, Gridley 28 Comment
  UCD106258  Lathyrus jepsonii var. californicus A. A. Heller 1914-5-1 11345 Butte Chico-Hamilton road 6 miles from Chico. Comment
  RSA700396  Lathyrus latifolius H. Gray 2003-6-3 s.n. Butte Millsap Bar Road. Comment
  CHSC30799  Lathyrus nevadensis M. S. Taylor; J. Jokerst 1980-4-18 2509 Butte Ca. 1 mi s of Nimshew, ca. 1/4 mi e of Nimshew Rd. 609 Comment
  POM29222  Lathyrus nevadensis subsp. nevadensis C. C. Bruce 1897-04 2086 Butte Yankee Hill. Comment
  RSA517347  Lathyrus sphaericus Barbara J. Ertter, Lowell Ahart 1986-4-13 5887 Butte 2 air miles NNE of Honcut between Oroville and Marysville, Peter Ahart Ranch (mostly used as sheep pasture). 30 Comment
  CAS-BOT-BC213288  Lathyrus sulphureus Lowell Ahart 1984-6-8 4661 Butte Along the edge of Ponderosa Way, about 1/8 mile west of the Ponderosa Dam, about 2 miles north-west of Forbestown 370 Comment
  CHSC2924  Layia fremontii W . Fitzwater 1958-3-15 Butte Shasta Hwy., Chico area. Comment
  CHSC368  Layia fremontii P. Delaplane 1965-3-9 3 Butte Ca. 1/4 mi. S.W. of Chico Municipal Airport on Cohasset Rd. 50 yds. from E. side of road. 30 Comment
  JEPS120761  Leersia oryzoides Lowell Ahart 2013-9-20 19056 Butte About 100 yards west of the railroad, about 400 yards south of the Rice Experiment Station buildings, about 2 miles SE of Richvale. Comment
  CHSC103014  Lemna minuta Lowell Ahart 2009-10-8 16410 Butte On the south side of the road, about 50 yards east of Parking Lot 15, Gray Lodge Waterfowl Management Area, about 7 miles (air) southwest of Gridley. 19 Comment
  CHSC106885  Leontodon saxatilis subsp. longirostris Lowell Ahart 2011-5-1 17335 Butte North side of the intersection of Georgia Pacific Way and Feather River Blvd, about 100 yards east of Highway 70, about 1 mile south of Oroville. 42 Comment
  SBBG126097  Leontodon saxatilis subsp. longirostris L. Ahart 2012-6-2 18131 Butte Truex Rd, W of intersection of Truex Rd and Trevor Rd, ca 1/8 mi NW of W Branch Bridge across Lake Oroville 286 Comment
  CHSC38374  Leontodon saxatilis subsp. saxatilis Vernon Oswald 1983-4-25 378 Butte Upper Bidwell Park, Chico, on the north rim at the head of the east intermittent stream feeding into Sycamore Creek. 365 Comment
  CHSC101831  Lepechinia calycina Lowell Ahart 2009-5-23 15759 Butte About 10 miles northeast of Chico, Upper Bidwell Park, about 1/4 mile west of the intersection of Highway 32 and Ten Mile House Road. On the east side of Guardians Trail by shrubs, about 150 yards southwest of Ten Mile House Road. 407 Comment
  JEPS115570  Lepechinia calycina Lowell Ahart 2009-5-23 15759 Butte About 10 miles northeast of Chico, Upper Bidwell Park, about 1/4 mile west of the intersection of Highway 32 and Ten Mile House Road. On the east side of Guardians Trail by shrubs, about 150 yards southwest of Ten Mile House Road 407 Comment
  CHSC85395  Lepidium nitidum John Dittes; Josephine Guardino 1992-5-7 484 Butte Cascade Range Foothills; ca. 5.1 air-miles northeast of Chico City Hall, ca. 1.3 air-miles east by southeast of Horseshoe Lake, ca. 1.2 air-mile west of Hwy 32; north of tributary of Dead Horse Slough, east of Canyon Oaks Golf Course. 176 Comment
  UCD115775  Lepidium nitidum L. Ahart 1973-2-21 153 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC89881  Lepidium nitidum Lowell Ahart 1979-4-14 s.n. Butte Peter Ahart Ranch. Honcut. 50 Comment
  HSC64066  Lepidium nitidum J. P. Smith 1973-3-22 5910 Butte Along Hwy. 149, just N of junction with Hwy. 70 Comment
  CHSC40530  Lepidium perfoliatum Lowell Ahart 1985-4-1 4874 Butte Along Table Mountain Boulevard, near the Cambell Overflow, a little south of the intersection of Highway 70 and 149, about 7 miles north of Oroville. 100 Comment
  UCSB64017  Lepidium pinnatifidum Ahart, Lowell 1981-7-26 Butte About 1/2 miles south of the Gray Lodge Waterfowl Management Headquarters, about 12 miles southwest of Gridley 30 Comment
  POM183170  Lepidium virginicum var. pubescens H. F. Copeland 1930-7-18 1333 Butte Jonesville. 1524 Comment
  SEINET4670739  Leptochloa dubia R. McKee 1907-7-8 17212 Butte Chico Comment
  CDA38812  Leptochloa fascicularis L. Ahart 2011-10-29 17731 Butte On the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 mile northwest of Biggs. Comment
  CHSC117322  Leptochloa fusca subsp. fascicularis B. Castro 2008-7-15 1759 Butte Sacramento Valley. Ca 2.5 mi W of Hwy 99 and 1.1 mi SE of Richvale, and ca 0.5 E of the Midway. Near jcn of Cherokee Canal, Southern Pacific RR and the Biggs Extension canal, along edge of rice field in adjacent ditch. 31 Comment
  CHSC75986  Leptochloa fusca subsp. fascicularis Lowell Ahart; Vernon H. Oswald 1999-8-13 8153 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 miles southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CAS-BOT-BC226522  Leptosiphon acicularis Lowell Ahart 1986-4-4 5243 Butte About 2 1/2 miles north and 2 1/2 miles east of Honcut, about 12 miles south of Oroville 82 Comment
Read comments Jul 19 2018
  CHSC32609  Leptosiphon bolanderi J. D. Jokerst 1981-3-28 1268 Butte Butte College Campus, adj to ephemeral creek. Ca 500 m due N of the jct of Pentz and Clark roads. 97 Comment
  CHSC54307  Leptosiphon bolanderi Vernon H. Oswald; Lowell Ahart 1991-6-5 4644 Butte Dirt road to Minnie-Ha-Ha Mine located on Big Chico Creek, on the west side of Hwy 32 ca. 1.5 miles (air) northwest of Platte Mtn Lookout, between Forest Ranch and Lomo. 701 Comment
  CHSC2429  Leptosiphon ciliatus R. Carter 1965-6-21 251 Butte Found on Oroville-Quincy Rd. at Merrimac, 5.5 mi. N of Mountain House, E 10' from road and S 15' from creek. 1176 Comment
  CHSC83714  Leptosiphon ciliatus J. D. Jokerst; T. B. Devine, D. Greenstein 1979-5-2 460 Butte In vernal pools below the high water mark. Ca 1.0 mi NE of jct of Cherokee Rd and E edge of North Table Mt. 381 Comment
  CAS-BOT-BC342063  Lessingia virgata A. A. Heller 1914-9-4 11762 Butte Hills 8 miles north of Oroville Comment
  SD62327  Lessingia virgata Willard Spence 1960-9-7 625 Butte 7 miles south of Oroville, alternate Route 40 Comment
  CHSC34799  Ligusticum californicum M. S. Taylor 1981-5-15 3750 Butte End of spur rd 22N84A, ridge sw of Stony Creek, ca. 2.5 mi due e of Jarbo Gap on Hwy 70. 944 Comment
  CHSC42589  Ligusticum grayi Vernon Oswald 1985-8-28 1932 Butte Scotts John Rd. 0.2 mi n of the road connecting Humboldt and Humbug Rds. 1780 Comment
  CHSC42593  Ligusticum grayi Vernon Oswald 1985-7-11 1899 Butte High Lakes Rd. n of Philbrook Lake at a point 0.8 mi w of the road to Chips Creek. 1859 Comment
  CAS-BOT-BC451601  Lilaea scilloides Lowell Ahart 1989-5-23 6240 Butte North of the new subdivision road, 1/2 mile east of Dunstone Drive, about 1/2 mile north of Bangor Park Road, west of Bangor 76 Comment
  CHSC25011  Lilium parvum E. B. Copeland 1930-7-18 614 Butte Jonesville. 1500 Comment
  CAS-BOT-BC133052  Lilium washingtonianum subsp. washingtonianum Albert M. Vollmer; Ira L. Wiggins 1940-7-6 10 Butte About 1/2 mile west of Chaparral 1554 Comment
  CHSC48595  Limnanthes alba subsp. versicolor Vernon Oswald 1985-4-23 1718 Butte Humbug Rd. 1.3 mi sw of its jct. with Nimshew Rd. 579 Comment
  CHSC54166  Limnanthes douglasii subsp. douglasii Lowell Ahart 1991-5-2 6648 Butte Peter Ahart Ranch, about 2 1/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  SEINET3450926  Limnanthes douglasii subsp. nivea Unknown 2003-4-10 10083 Butte Oroville, Oroville, about 2.5 air miles north, top of South Table Mountain, along a small drainage southwest of the 'sunken area 310 Comment
  CHSC1011  Limnanthes douglasii subsp. rosea P. Delaplane 1965-3-23 42 Butte H. Wurlitzer Ranch; ca. 13 mi NW of Chico. W. of Hwy 99E N. 60 Comment
  CHSC52409  Limnanthes douglasii subsp. rosea Rene T. Retuta 1978-4-18 18 Butte Ca 100 ft W of Broyles Rd, ca. 1500 ft W of hwy 99, 8.5 mi NW of Chico. 62 Comment
  CAS-BOT-BC45928  Limnanthes floccosa subsp. californica A. A. Heller 1938-3-27 15002 Butte Near the Chico Airport in the Upper Sonoran Life Zone Comment
  CHSC29027  Limnanthes floccosa subsp. californica J. D. Jokerst 1980-3-20 487 Butte Ca 50 m NW of the jct of Skyway and Bruce Rd (ca 0.5 mi E of Hwy 99). Comment
  CHSC67542  Limnanthes floccosa subsp. californica James D. Jokerst 1991-4-18 3238 Butte Doe Mill population N of Warfield Rd., E of Bruce Rd., W of Butte Creek Diversion Channel. On young fan deposits of Little Chico Creek. 76 Comment
  CHSC67550  Limnanthes floccosa subsp. californica James D. Jokerst 1980-3-12 471 Butte E of Cohasset Hwy. at Chico Municipal Airport. 64 Comment
  UC203613  Limnanthes floccosa subsp. californica A. A. Heller 1914-4-3 11261 Butte 8 mi from Oroville (on Chico-Oroville road, below blue oak belt) Comment
  CHSC67561  Limnanthes floccosa subsp. floccosa James D. Jokerst 1988-3-15 3046 Butte Roadside ditch adjacent to Keefer Rd. ca. 0.25 mi W of Cohasset Hwy. Comment
  JEPS122228  Limosella acaulis Lowell Ahart 2014-4-26 19413 Butte On the south side of Butte City Highway (Highway 162), collected from the railroad to the east about 200 yards, east of the Rice Experiment Station. Comment
  UC1377647  Linanthus bolanderi John Ingram and Arlynn Ingram 1960-4-5 293 Butte about 2 mi s Paradise (along Neal Road) Comment
  CHSC2480  Linanthus dichotomus W. Fitzwater 1958-4-19 Butte Humboldt Rd., Chico area. On top of ridge. 457 Comment
  CHSC3813  Linanthus dichotomus L. E. Dunkel 1965-3-30 4 Butte Side of hill ca. 25 yards east of State Highway 32 at curve 7 mi. e of Chico City limits (99 Freeway overpass). 357 Comment
  CHSC38596  Linanthus dichotomus Vernon Oswald 1983-3-6 127 Butte Upper Bidwell Park, Chico, on the north rim ca. 0.5 mi e of the power lines. 274 Comment
  SEINET10496799  Linanthus filipes Mary Susan Taylor 1974-4-20 Taylor 181 Butte On W side of Richardson Springs Rd, ca. 2 mi NE of Cohasset Rd, ca. 6 mi N of Chico. Comment
  JEPS110206  Linanthus harknessii Lowell Ahart 2006-7-16 13008 Butte On the west side of the poor dirt road, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1524 Comment
  UC754224 Image available Linanthus parviflorus Herbert L. Mason 1941-4-6 12414 Butte Cherokee; ; Cherokee, Butte Co. 304 Comment
  POM219475  Linanthus pungens subsp. pulchriflorus E. B. Copeland 1931-6-22 682 Butte Jonesville; mountain top west of the Summit 2150 Comment
  JEPS108132  Linaria genistifolia subsp. dalmatica Lowell Ahart 2005-11-12 12484 Butte Flat area on the south side of Dark Canyon Creek, about 50 yards south of the train tunnels, west of Dark Canyon Road, about 2 1/2 miles (air) south of Highway 70 at Big Bend Road 293 Comment
  SEINET10569965  Lindernia anagallidea Mary Susan Taylor 1978-7-22 Taylor 1845 Butte Ca. 20 ft E of the Midway, ca. 7 mi S of Durham, S of Chico, in rice field. 30 Comment
  CHSC51019  Lindernia dubia var. anagallidea Lowell Ahart 1990-7-15 6559 Butte Below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/4 mile north-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  CHSC76029  Lindernia dubia var. dubia Vernon H. Oswald 1999-8-29 9839 Butte Gravel bar on the east side of the Sacramento River downstream from Ord Ferry Bridge at the northwest corner of Rancho Llano Seco. 28 Comment
  CHSC90295  Linnaea borealis var. longiflora L. P. Janeway 1994-7-19 4697 Butte Northern High Sierra Nevada. South side of Cascade Creek 0.4 mi east of confluence with South Branch Middle Fork Feather River. 1179 Comment
  JEPS120945  Linum bienne Lowell Ahart 2013-4-20 18553 Butte West side of Wilson Creek, SW of the dredge pond, W of the barn, about 3.25 air miles NE of Honcut. Comment
  CHSC55618  Lipocarpha L. P. Janeway 1986-9-20 1880 Butte At edge of gravel bar along east side of Sacramento River, just southeast of the Ord Ferry Road bridge. 28 Comment
  SEINET13711404  Lipocarpha aristulata Lowell William Ahart, Lowell William Ahart 1999-1 8146 Butte 12 Air Mi SW Chico, 2 Mi SE Ordbend Comment
  CHSC618  Lithocarpus densiflorus N. Glasgow 1939-4-1 Butte De Sabla. 762 Comment
  SACT002882  Lithocarpus densiflorus Herbert Copeland 1937-7-30 Butte In the foothills of Butte County. Comment
  UC176225  Lithocarpus densiflorus A. A. Heller 1913-6-7 10798 Butte near Stirling 1074 Comment
  RSA123003  Lithocarpus densiflorus var. densiflorus C. G. Albertus 1933-7-25 51 Butte One mile north of Powellton. 1098 Comment
  CAS-BOT-BC430880  Lithophragma bolanderi Lowell Ahart 1980-5-25 2336 Butte Near Old Forbestown. 950 Comment
  CHSC60587  Lithophragma campanulatum Vernon Oswald; Lowell Ahart 1993-4-19 5276 Butte Rattlesnake Creek Trail from Jordan Hill Rd. to Sawmill Pk. Lookout, ENE of Magalia. Near the trailhead on Jordan Hill Rd. 707 Comment
  CAS-BOT-BC435492  Lithophragma glabrum Lowell Ahart 1987-5-12 5646 Butte S of Lumpkin Ridge Road, 1 1/2 miles E of Camp 18, about 8 miles NE of Feather Falls 1280 Comment
  CHSC51107  Lithophragma parviflorum var. trifoliatum Gerald A. Winter 1989-4-15 12 Butte Ca. 100 yds w of Cherokee Road on Table Mountain, ca. 5 mi ne of Oroville. 396 Comment
  CHSC94024  Lithophragma parviflorum var. trifoliatum R. D. Fischer 2005-4-9 729 Butte Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve off Lookout Trail. Plants growing in grassy openings on the north facing slope below main trail. 487 Comment
  RSA32009  Lithophragma parviflorum var. trifoliatum A. A. Heller 1929-4-12 14830 Butte Richardson s Springs Comment
  SEINET10497329  Lithospermum californicum Mary Susan Taylor 1980-4-18 Taylor 2507 Butte T23N R3E ne sec 27 Paradise quad. Ca. 1 mi S of Nimshew, ca. 1/4 mi E of Nimshew Road; Yellow Pine Forest. With J.D. Jokerst. 610 Comment
  CHSC38049  Lobularia maritima R. E. Preston 1983-1-14 378 A Butte Collected from the planter on First St, on S side of Kendall Hall, campus of C.S.U., Chico. Comment
  CHSC27295  Lolium multiflorum P. Moyer 1972-4-9 172 Butte CSUC Campus. Sacramento Ave., across from sportshop. 60 Comment
  CHSC57166  Lolium multiflorum R. L. Ondricek-Fallscheer 1982-5-26 137 Butte In yard of house on plateau at southwest end of Flatiron Ridge, ca 3 1/2 mi west-southwest of Paradise. 192 Comment
  CHSC66461  Lolium multiflorum Vernon H. Oswald; Lowell Ahart 1996-6-10 7734 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the bank of the Sacramento River at the N end of the Riparian Sanctuary. 28 Comment
  CDA2244  Lolium perenne L. Ahart 2002-6-2 9675 Butte East of the large exposed drain pipe, road cut on the south side of Lumpkin Road, about 1 mile northeast of the intersection of Lumpkin Road and Forbestown Road, about 12 miles (air) east of Oroville. Comment
  CHSC4361  Lolium perenne M. Hillier 1966-5-30 Butte Chico. N.W. side of CSC gym by ski jump. Field. Comment
  SEINET10591974  Lolium perenne Lowell Ahart 1988-9-4 Ahart 6175 Butte On dry disturbed soil, along the N side of a branch of Last Chance Creek, E of the dirt road, about 1 mile W and little N of Bald Mountain. 1006 Comment
  CHSC86847  Lolium temulentum L. P. Janeway; John Hunt 2003-5-22 7794 Butte Northern Sierra Nevada Foothills. Northeast-facing slope between Lime Saddle Campground and West Branch Feather River arm of Lake Oroville. 287 Comment
  CHSC37386  Lomatium caruifolium var. denticulatum R. A. Schlising 1980-4-28 3577 Butte Richvale Vernal Pools, 1/4 mi s of jct Hwy 162 to Oroville and Hwy 99, along latter and across from Tharmalito Afterbay. Comment
  UC875115  Lomatium caruifolium var. denticulatum A. A. Heller 1915-3-6 11769 Butte 8 mi. n. Oroville Comment
  CHSC41362  Lomatium macrocarpum R. A. Schlising 1980-6-10 3666 Butte N part of county, along Humboldt Road, 1.9 mile NE of junction with Highway 32 at Lomo. Comment
  CHSC46110  Lomatium marginatum J. D. Jokerst 1980-6-8 811 Butte Ca 220 meters ENE of the junction of the Skyway and Coultelenc Rd. Magalia Serpentine. Comment
  SEINET10454499  Lomatium marginatum Mary Susan Taylor 1981-4-5 Taylor 3490 Butte T21N R4E nw sec 12; Berry Creek quad. E side of Dark Canyon Rd, 2.5 mi s of its jct with Big Bend Rds, ca. 3 air mi s of Jarbo Gap on Hwy 70, n of Oroville. Roadside; 1300 ft. 396 Comment
  CHSC96803  Lomatium utriculatum Lowell Ahart 2007-4-30 13712 Butte On the west side of Jordan Hill Road, about 2 1/2 miles northwest of Concow Creek, about 2 1/2 miles northwest of Concow Reservoir. 618 Comment
  POM78230  Lomatium vaginatum C. C. Bruce 1897-03 2053 Butte Little Chico Comment
  CHSC70791  Lonicera hispidula H. Durio; B. Castro, L. Gehrung 1995-7-24 Butte Ca. 1.5 air mi A of Hungry Hunt Peak, and 1.5 mi # of Hwy 70, ca 0.2 mi s on 'A' Spur off USFS Rd 22N84. 914 Comment
  SEINET10465153  Lonicera hispidula var. vacillans Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4066 Butte T20N R5E sec 5. Along Bloomer Hill Rd, ca. 0.5 mi w of Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland. 400 Comment
  SEINET10465144  Lonicera interrupta Lowell Ahart 1985-6-17 Ahart 5065 Butte Lumpkin Ridge, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. Comment
  CHSC73410  Lonicera involucrata var. involucrata B. Castro; L. Gehrung 1995-6-20 578 Butte Ca 4 air mi NE of Feather Falls towards northeastern end of Watson Ridge, in moist N-trending ravine (within Mixed Conifer forest) S of sharp bend in USFS Rd 22N24. 1173 Comment
  UC1609033  Lonicera involucrata var. involucrata Lowell Ahart 1993-7-22 7086 Butte 6 (air) mi ne Feather Falls (about 200 yards w of the bridge, w side of river); Fall River 1036 Comment
  SEINET10451959  Lotus argophyllus var. fremontii Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4162 Butte T21N R6E sw sec 33. Along Bean Creek Rd, ca. 2 mi s of Little Bald Rock, ca. 19 mi ne of Oroville. Foothill Woodland; 800 m. 800 Comment
  SEINET957207  Lotus balsamiferus Lowell Ahart 1987-1 5804 Butte On dry bare distrubed soil, near Big Bar Mountian Road, about 1 mile south-west of Coyote Gap, about 5 miles east of Pulga. Comment
  SEINET12161432  Lotus subpinnatus D. G. Bendix 1978-1 12 Butte 50 m s of Lookout Point, 7kmW of Paradise 300 Comment
  CHSC112875  Ludwigia decurrens Evan Padgett 2014-8-20 Butte Sacramento Valley. Agricultural fields between Richvale and Highway 162, east of Midway, next to rice fields. 26 Comment
  CHSC109778  Ludwigia palustris Lowell Ahart 2012-10-20 18510 Butte South of Table 34, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  JEPS119895  Ludwigia palustris Lowell Ahart 2012-6-5 18168 Butte North of Beatson Hollow, about 1 3/4 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. Comment
  SEINET10453036  Ludwigia peploides Mary Susan Taylor 1978-5-7 Taylor 1608 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  CHSC61054  Ludwigia peploides subsp. peploides Vernon H. Oswald 1993-7-29 5736 Butte Gray Lodge Wildlife Management Area W of Gridley, 0.3 mi S of Rutherford Rd. on the first levee road E of the headquarters complex. In a drainage ditch. 19 Comment
  SEINET5766216 Image available Lupinus A. A. Heller 1915-1 11866 Butte 2 mi E of Durham Comment
  SEINET11268145  Lupinus albicaulis Lowell Ahart 1993-6-16 6965 Butte South-west of the intersection of Black Bart Road and Forbestown Road, about 3 1/2 (air) miles south-west of Forbestown.; 0 610 Comment
  UC725344  Lupinus albicaulis A. A. Heller 1941-5-22 16138 Butte on State Highway #24 about a half mi w Jarboe Pass; w of Jarboe Pass Comment
  RSA32827  Lupinus bicolor subsp. tridentatus A. A. Heller 1939-4-10 15376 Butte Lower part of the Cohasset road near the foot of the grade near Rock Creek. Comment
  CHSC48528  Lupinus bicolor var. tridentatus Vernon Oswald 1984-3-7 1090 Butte Upper Bidwell Park, Chico, beside Yahi Trail at Salmon Hole. 158 Comment
  CAS-BOT-BC8537  Lupinus caeruleus Amos Arthur Heller 1940-4-28 15561 Butte Between the Radio Station and Hooker Oak, east of Chico Comment
  HSC23347  Lupinus densiflorus var. aureus Carolyn Fante 1971-4-13 4 Butte N side Pentz-Magalia Hwy. 165 Comment
  SEINET10485235  Lupinus densiflorus var. lacteus Schultz 1975-5-6 Schultz 20 Butte Petals white, tinted or veined with rose or violet. Scattered populations alng Roadside in beatson's hollow area of table mt. 2.7 Mi. N of oroville. Soil a Deep loam in a woodland habitat. 320 Comment
  JEPS93938  Lupinus latifolius var. columbianus Vernon H. Oswald and Lowell Ahart 1998-8-11 9471 Butte Four Trees-Coyote Gap Road 0.4 mni w of Four Trees; Four Trees-Coyote Gap Road 1530 Comment
  CHSC90024  Lupinus microcarpus Keith Bunney 1991-4-21 1 Butte In empty lot n side of Hwy 162, 1.6 mi e of Hwy 99. 76 Comment
  SEINET12765224  Lupinus microcarpus var. densiflorus Lowell Ahart 1992-5-9 6762 Butte On the north side of the Thermalito Diversion Pool, Lake Oroville Recreation Area, about 2 (air) miles north of Oroville.; 0 76 Comment
  CHSC33151  Lupinus microcarpus var. microcarpus Robert Banchero 1979-4-22 16 Butte Northmost Butte County, ca. 0.5 mi n of Pine Creek, nw of Singer Creek; 7 mi nw of Nord on Cana-Pine Creek Road. 56 Comment
  UC204550  Lupinus nanus A. A. Heller 1914-5-8 11378 Butte Clear Creek-Paradise grade Comment
  CHSC3251  Lupinus nanus var. apricus Virginia Hagaman 1966-3-28 90 Butte Table Mountain. Comment
  CHSC48535  Lupinus nanus var. apricus Vernon Oswald 1983-3-31 245 Butte Upper Bidwell Park, Chico, beside Yahi Trail between Day Camp and Bear Hole. 103 Comment
  CHSC9269  Lupinus nanus var. apricus D. C. Burns 1971-3-23 108 Butte Abundant in Bidwell Park, ca. 300 yds ne of the Chico Municipal Golf Course Building, Chico. 83 Comment
  CHSC43386  Lupinus nanus var. vallicola Lowell Ahart 1978-5-2 1711 Butte Near the large parking area on the top of Table Mountain, about 7 miles north of Oroville. 457 Comment
  JEPS105664  Lupinus nanus var. vallicola L. P. Janeway, John Hunt, Adam Henderson 2003-5-29 7800 Butte Northern High Sierra Nevada. Steep northwest-facing slope just above the Middle Fork Feather River arm of Lake Oroville; 5.1 km west-southwest of mouth of Frey Creek 287 Comment
  CHSC38513  Lupinus polycarpus Vernon Oswald 1983-3-31 237 Butte Upper Bidwell Park, Chico, near the s-w edge of the parking lot at Salmon Hole (1.4 mi e of the power lines). 152 Comment
  CHSC94276  Lupinus polyphyllus var. burkei Lowell Ahart 2006-7-16 12991 Butte On the west side of Willow Creek, on the east side of a large meadow and bog, about 200 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  CHSC52711  Luzula cascadensis L. P. Janeway 1988-7-29 3104 Butte Butte Creek at Butte Meadows, at crossing of Bull Hill Road (Skyway). North-facing bank above the creek. 1325 Comment
  POM196063  Luzula comosa H. F. Copeland 1929-6-11 1244 Butte Jonesville. 1524 Comment
  CHSC30509  Luzula macrantha N. E. H. Prouty 1980-4-7 110 Butte Along Lower Rocky Honcut Creek, south of Swedes Flat Rd. 381 Comment
  CHSC53714  Luzula macrantha L. P. Janeway 1988-7-2 2948 Butte At upper reach of Brush Creek, ca 1/5 mi S of 'town' of Brush Creek. 952 Comment
  CAS-BOT-BC441205  Luzula macrantha Lowell Ahart 1980-3-26 2066 Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC110347  Luzula subsessilis L. P. Janeway 2013-5-5 11098 Butte Northern High Sierra Nevada. Plumas National Forest; eastern slope of Bloomer Hill, 1.0 air km east of the top. 701 Comment
  SEINET10816702  Luzula subsessilis Peter F. Zika 2010-5-14 Zika 24805 Butte NW slope of Mt. Pisgah, SE of Eugene. 275 Comment
  CHSC99480  Lychnis coronaria Lowell Ahart 2008-6-13 14826 Butte Banks of Oregon Gulch, bottom of an old gold mined area, about 400 yards southwest of the cemetery, about 10 miles (air) northeast of Oroville. 305 Comment
  CHSC71400  Lycopus americanus Lowell Ahart 1998-7-18 8042 Butte Southwest side of the lone oak tree, west of the cow chute on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  RSA725036  Lycopus americanus L. Ahart 2006-9-13 13320 Butte South edge of the North Fork of the Feather River, about 50 yards west of the Cresta Power House, north side of Highway 70, about 2 3/4 miles northeast of Pulga, about 23 miles (air) northeast of Oroville. 437 Comment
  UCD124965  Lycopus americanus L. E. Hazeltine 1916-6-24 s.n. Butte Chico. Comment
  CHSC62120  Lythrum hyssopifolia B. Castro 1987-5-28 125 Butte Ca 2 mi NW of Oroville via Hwy 70 on E side of Table Mtn Blvd, at SE end of curve in road, by seep just downslope from railroad embankment. 97 Comment
  CHSC68836  Lythrum salicaria Lowell Ahart 1997-6-29 7742 Butte On the south side of Wyman Ravine, on the west side of Lone Tree Road, about 6 miles south of Oroville. 36 Comment
  POM183160  Madia bolanderi H. F. Copeland 1930-7-25 1322 Butte Jonesville; in meadow below cabin Comment
  CAS-BOT-BC342725  Madia elegans H. E. Brown 1897-4-15 196 Butte Collected near Clear Creek Comment
  UCD134232  Madia elegans M. Vincent 1963-6-6 370 Butte Nelson Bar Road at PGE. Comment
  UCD150343  Madia elegans Harry George 1967-8-30 s.n. Butte Butte Creek and 99E Highway. Comment
  JEPS104323  Madia elegans subsp. elegans Lowell Ahart 2003-6-30 10321 Butte North of the small stream, on the e side of Ponderosa Way, ca 2 1/2 mi (by road) sw of the Ponderosa Dam, ca 2 mi (air) nw of Forbestown. 578 Comment
  SD122590  Madia exigua Lowell Ahart 1984-6-8 4666 Butte Ponderosa Dam, ca. 2 miles northwest of Forbestown 370 Comment
  CHSC25456  Madia gracilis Marc Hayes; Warner 1977-9-11 79 Butte Along Humboldt Road between Butte Meadows and Jonesville, exactly 9.0 mi from the junction of Humboldt Rd. with Hwy 32. 1219 Comment
  CHSC78235  Madia gracilis Lowell Ahart 2000-6-29 8543 Butte On the west side of Concow Road at Flea Meadow, about 1/2 mile west of Flea Mountain, about 3 1/2 miles (air) north of Concow Reservoir, about 5 miles (air) east of Magalia. 1036 Comment
  UC600743  Madia gracilis E. B. Copeland 1930-7-24 186 Butte Jonesville 1500 Comment
  CDA34718  Madia subspicata L. Ahart 2010-6-1 16751 Butte South side of Guardian's Trail, about 100 yards east of the end of Centennial Avenue, Upper Bidwell Park, about 1/2 mile east of Chico Canyon Road. Comment
  SD8992  Malacothrix floccifera Mrs. R. M. Austin 1883-1 Butte Comment
  CHSC1035  Malva nicaeensis F. Johnson 1937-6-4 Butte Chico. 57 Comment
  CDA5025  Malva parviflora L. Ahart 2003-5-9 10122 Butte North side of Evans Reimer Road, about 3/4 mile west of Block Road, about 3 miles (air) southwest of Gridley. Comment
  RSA157758  Marah fabacea I. L. Wiggins 1925-3-22 1468 Butte Chico Creek Canyon about 5 miles above Chico. Comment
  CHSC87429  Marah watsonii R. D. Fischer 2004-3-20 90 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Collected near Hwy 32 and beginning of Pine Trail. 454 Comment
  UC196259  Marah watsonii A. A. Heller 1914-4-27 11328 Butte 8 mi n Oroville Comment
  CHSC38473  Marrubium vulgare Vernon Oswald 1983-5-2 420 Butte Upper Bidwell Park, Chico, along the s edge of the Golf Course. 91 Comment
  CAS-BOT-BC67815  Marsilea vestita A. A. Heller 1914-7-31 11633 Butte Sacramento Valley about 6 miles northwest of Chico on Chico-Hamilton Road Comment
  CHSC11367  Marsilea vestita Lowell Ahart 1968-5-8 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC24566  Marsilea vestita Lowell Ahart 1976-11-2 Butte Peter Ahart Ranch, Honcut. 33 Comment
  CHSC46112  Matricaria occidentalis J. D. Jokerst 1982-4-29 1541 Butte Grey Lodge Waterfoul Management Area. Along the edge of Rutheford Rd. where it turns 90 degrees to the north in the center of section 14. Comment
  CHSC1206  Meconella californica S. Carter 1929-3-25 Butte Richardson Springs road. Comment
  CHSC2397  Meconella californica R. Carter 1965-3-14 164 Butte 457 Comment
  CHSC45286  Medicago lupulina Vernon Oswald 1987-5-12 2387 Butte Butte Creek Reserve on the s side of Butte Creek, n of the Skyway, near the Crouch Ditch Dam. 79 Comment
  CDA4226  Medicago scutellata P. B. Kennedy 1924-1 Butte Chico. 0 Comment
  CHSC82472  Melica aristata Lowell Ahart; John Dittes, Josephine Guardino 2002-6-21 9745 Butte On the north side of a poor dirt road, Watson Ridge, about 2 miles (air) northeast of Bald Rock Dome, about 5 miles (air) north of Feather Falls (the town). Comment
  SEINET175798  Melica aristata E. B. Copeland 1929-7-18 337 Butte Jonesville Butte County. 1550 Comment
  UC398887  Melica aristata E. B. Copeland 1929-7-18 337 Butte Jonesville 1550 Comment
  CAS-BOT-BC282051  Melica fugax H. F. Copeland 1932-6-29 s.n. Butte Jonesville 1550 Comment
  CHSC107584  Melica harfordii Lowell Ahart 2011-7-9 17567 Butte North of a large open bare granite area, about 1/4 mile east of Little Bald Rock, about 2 miles (air) southeast of Brush creek, about 15 miles (air) northeast of Oroville. 975 Comment
  UCD88614  Melica subulata August L. Hormay 1929-7-7 s.n. Butte Butte Creek, 4 miles below Butte Mtn. Ranger Station. Comment
  UCD89081  Melica torreyana A. A. Heller 1915-4-20 11859 Butte Butte County. 7 miles below Cenerville in the Sierra foothills, where it is locally plentiful on the banks of Butte Creek. 76 Comment
  CHSC103163  Mentha arvensis Lowell Ahart 2009-11-19 16543 Butte North of the rose thicket, about 30 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 209 Comment
  CHSC43840  Mentha canadensis B. Castro 1987-8-25 210 Butte In midstream Butte Ck ca. 1/2 mi e of its crossing of Hwy 99 (ca 2.1 mi s of Skyway in Chico). 68 Comment
  CHSC58924  Mentha canadensis Lowell Ahart 1992-7-23 6826 Butte Growing on the north side of Thermolito Diversion Pool, near Longs Bar Monument, Lake Oroville Recreation Area, about 2 miles west of Oroville Dam. 76 Comment
  CHSC75998  Mentha pulegium Lowell Ahart; Vernon Oswald 1999-8-13 8164 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC80658  Mentha pulegium Lowell Ahart 2001-6-1 8746 Butte On the margin of the Thermalito Afterbay, on the south side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 42 Comment
  CHSC96954  Mentha pulegium Lowell Ahart 2007-7-8 14274 Butte On the north side of North Honcut Creek, Peter Ahart Ranch, about 3/4 miles north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 45 Comment
  JEPS95740  Mentha pulegium Lowell Ahart 1995-7-15 7591 Butte 12 mi S of Oroville (Peter Ahart Ranch; 2 1/4 mi N and 1/10 mi E of Honcut) 36 Comment
  CDA5706  Mentha spicata var. spicata L. Ahart 2000-8-3 8675 Butte About 100 yards south of the Feather River, east of the break in the levee, about 1/2 mile (air) west of Pacific Heights Road, Oroville Wildlife Area, about 3 1/3 miles (air) southwest of Oroville. Comment
  CHSC26707  Mentzelia laevicaulis M. P. Hayes 1977-10-23 143 Butte In Lindo channel in large gravel about 180 m w of its intersection with Mangrove Avenue in Chico. 35 Comment
  NY112245  Mentzelia laevicaulis A. A. Heller 1914-8-13 11682 Butte Hills 8 miles north of Oroville. Comment
  SEINET10497356  Mertensia ciliata var. stomatechoides Mary Susan Taylor 1978-7-19 Taylor 1755 Butte On W side of Upper Scotts John Road, ca. 2 mi N of its junction with Scotts John Road, ca. 4 mi E of Jonesville. 1829 Comment
  CAS-BOT-BC428761  Micranthes californica A. A. Heller 1919-3-25 13098 Butte Canon [Canyon] of Chico Creek Comment
  CAS-BOT-BC428768  Micranthes californica Robert R. Kehlor 1951-4-14 31 Butte J. M. Kehlor ranch, 6 1/4 miles east of Oroville, on Mt. Ida road Comment
  CHSC39607  Micranthes integrifolia Lowell Ahart 1983-2-21 3902 Butte Peter Ahart Ranch, about 2 1/2 miles north and 1/2 mile east of Honcut. 35 Comment
  CAS-BOT-BC429041  Micranthes nidifica Lowell Ahart 1983-2-21 3902 Butte Peter Ahart Ranch, about 2 1/2 miles north and 1/2 mile east of Honcut 35 Comment
  CHSC39531  Micropus californicus var. californicus Lowell Ahart 1983-6-12 4043 Butte Along the edge of the road and near a small meadow, about 1 mile south of Crystal Hill, near Oregon Gulch, near Lake Oroville, about 7 miles south-west of Feather Falls. 425 Comment
  UCD80103  Microseris acuminata CNPS SN Foothill Team 2005-4-15 SNFN 0081 b Butte City of Chico, Doe Mill Meadowfoam Preserve, ~50 m from the western boundary and ~70 m from the northern boundary. 85 Comment
  CHSC31606  Microseris douglasii subsp. tenella L. Ahart 1979-5-11 1866 Butte Peter Ahart Ranch, Honcut. In fields. 50 Comment
  POM183162  Microsteris gracilis subsp. humilis H. F. Copeland 1930-7-20 1332 Butte Jonesville. 1524 Comment
  UCSB44169  Mimulus angustatus Reisentz, Paul 1979-5-13 Butte 4 miles West on Cherokee Road from Highway 70 at Cherokee Point Comment
  POM264771  Mimulus bicolor Lincoln Constance 1941-5-28 2831 Butte South Branch of the Feather River at Magalia, Sierra Nevada foothills. 488 Comment
  SEINET12319564  Mimulus bifidus Unknown 1978-1 17 Butte ca 4 mi SE Concow Reservoir, 13.5 mi NE of Oroville, 0.7 mi S on Dark Canyon Rd, E side of road 549 Comment
  JEPS117290  Mimulus breweri Lowell Ahart 2010-9-21 17207 Butte About 70 yards east of the poor dirt road, about 80 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir 1917 Comment
  JEPS10250  Mimulus cardinalis H. A. Dutton 1921-1 Butte Hooker Oak Chico Comment
  UCD89439  Mimulus filicifolius Jason Sexton 2010-5-22 3 Butte East of Oroville, Big Bald Rock area. 932 Comment
  CHSC118861  Mimulus glaucescens Christopher T. Ivey 2017-5-27 390 Butte Honeyrun Road,, about 4.5 km NE of bridge crossing Butte Creek, roadsie ditch on E side of road. 318 Comment
  JEPS34388  Mimulus glaucescens Rimo Bacigalupi, and P. C. Hutchison, J. K. Wright 1963-6-1 8864 Butte 0.75 mi s Pulga (above side road off U.S. highway 40, just before bridge across Feather River, n base of grade over Jarbo Gap); Canyon of North Fork of Feather River 426 Comment
  POM43712  Mimulus glaucescens C. C. Bruce 1897-02 2106 Butte Little Chico. Comment
  UC336554  Mimulus glaucescens Edw. L. Greene 1890-6-27 Butte Chico Comment
  OBI9444  Mimulus glaucescens Robert F. Hoover 1968-5-29 11137 Butte Cohasset Rd Comment
  SEINET10570233  Mimulus glaucescens Mary Susan Taylor 1981-7-10 Taylor 4061 Butte T22N R5E ne sec 6, Pulga quad. N side of Feather River Hwy 70 at Pulga bridge, on large serpentine outcrop, ca. 20 mi NE of Oroville. 1600 ft elev. 488 Comment
  JEPS104651  Mimulus guttatus Lowell Ahart 2003-7-17 10419 Butte On the e side of Black Bart Rd, ca 1/2 mi w of the intersection of Forbestown Rd and Black Bart Rd, ca 4 mi (air) sw of Forbestown. 716 Comment
  JEPS110327  Mimulus guttatus Lowell Ahart 2006-7-25 13063 Butte In the west part of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  JEPS80614  Mimulus guttatus M. S. Taylor 1980-4-27 2552 Butte ca. 1 mi s Nimshew (0.5 mi e of Nimshew Rd., on n side of Ponderosa Way Rd.) 609 Comment
  JEPS86890  Mimulus guttatus David M. Thompson 1988-6-8 938 Butte 0.1 mi nw Hwy 70 (along Pulga Road (Pulga Road leaves Hwy 70 at w side of Feather River bridge)) 500 Comment
  RSA32856  Mimulus guttatus A. A. Heller 1938-4-14 15028 Butte Summit of Table Mtn. 305 Comment
  RSA795592  Mimulus guttatus Christopher T. Ivey 2010-6-7 374 Butte Honey Run Road, 3.0 km northeast of bridge crossing Butte Creek, in wet meadow and roadside ditch. 165 Comment
  RSA792363  Mimulus guttatus Dena Grossenbacher, Brian Green 2008-5-3 813 Butte About 2.25 miles from Bardees Bar Road junction on forest service road 22N37. 328 Comment
  SEINET10570356  Mimulus guttatus Mary Susan Taylor 1975-4-26 Taylor 534 Butte Kunkle Reservoir, ca. 500 yds E of Pentz-Magalia Hwy, ca. 1 m SE of Paradise. With Orthocarpus erianthus, Centaurea solstitus, Lupinus bicolor, Typha latifolia. 610 Comment
  SEINET8256543  Mimulus guttatus A. A. Heller 1914-3-18 11200 Butte low hills 8 miles north of Oroville. Comment
  UCSB63615  Mimulus kelloggii Sterling, Lynda 1986-3-18 Butte S bank of Butte Creek; ca. 150 yds wsw of covered bridge; ca. 7 mile E of Chico 91 Comment
  SEINET10929285  Mimulus laciniatus Lowell Ahart, L. Hanson 1985-5-20 Ahart 5027 Butte About 1/2 mile east of Little Bald Rock, N of Oroville. Comment
  CHSC31022  Mimulus moschatus M. S. Taylor 1980-10-6 3361 Butte S side of Hwy 70, ca. 1/4 mi w of Bear Creek jct with n fork Feather River, ca. 0.5 mi w of Arch Rock Tunnel rest stop. 487 Comment
  CHSC38706  Mimulus moschatus Vernon Oswald 1983-6-2 614 Butte Upper Bidwell Park, Chico, 100 ft n of Upper Park Rd. at Diversion Dam. 128 Comment
  SEINET10929294  Mimulus moschatus Mary Susan Taylor 1981-5-15 Taylor 3747 Butte T22N R5E se sec 2, Pulga SW quad. W side of rd 23N00.1, ca. 3/4 mi S of Coyote Gap, ca.4 air mi E of Pulga on Feather River Hwy 70. Creek crossing road; shaded; 3800 ft. 1158 Comment
  JEPS47715  Mimulus nanus var. mephiticus Paul C. Hutchison with J. K. Wright and R. Bacigalupi 1963-6-1 2699 Butte w side Pulga Bridge; North Fork of Feather River 487 Comment
  JEPS121901  Mimulus primuloides var. primuloides Lowell Ahart 2014-7-10 19613 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  UCD122958  Mimulus tricolor R. N. Raynor; H. A. Hannesson 1941-5-9 s.n. Butte 4 miles W of Oroville. Comment
  CHSC35301  Minuartia californica J. D. Jokerst 1982-3-11 1510 Butte West edge of mesa ca 1/2 mi S of Cherokee Rd. Comment
  UC203619  Minuartia californica A. A. Heller 1914-3-18 11208 Butte 8 mi n Oroville Comment
  SEINET11930246  Minuartia douglasii Unknown 1978-1 39 Butte Ca 150 ft W of Cherokee Rd, ca 5.5 mi N of Oroville, ca 6.5 mi S oh highway 70 on Cherokee Rd 518 Comment
  UC478514  Mitella pentandra E. B. Copeland 1930-6-24 644 Butte Jonesville 1500 Comment
  UCD98350  Moenchia erecta subsp. erecta Lowell Ahart 2000-5-9 8332 Butte south side of the Oak Grove Cemetary, about 1/2 mile southeast of Hurleton, about 10 miles (air) northeast of Oroville. 548 Comment
  CDA34283  Mollugo verticillata L. Ahart 2009-8-13 16274 Butte Chico: about 100 yards east of the diversion structure that controls Mud Creek diversion and Lindo Channel, northeast of Hooker Oak, Upper Bidwell Park. Comment
  UCD99637  Mollugo verticillata A. A. Heller 1914-6-2 11473 Butte 8 miles north of Oroville. Comment
  CHSC60102  Monardella breweri subsp. lanceolata B. Castro; J. Jurewicz 1991-9-16 447 Butte Ca 23 air mi NE of Oroville, ca 4 mi NE of Mtn. House along Oro-Quincy Hwy, on E side of USFS Rd 22N80 ca 0.2 mi NE of its jcn with the Oro-Quincy Hwy. 1203 Comment
  CHSC70800  Monardella breweri subsp. lanceolata B. Castro 1989-8-1 332 Butte Ca 3.5 road mi E of Brush Creek on Milsap Bar Rd. Ca 100 ft S of rd. 853 Comment
  CHSC52210  Monardella odoratissima L. P. Janeway; R. A. Schlising 1988-7-16 2999 Butte Between Colby Mtn Rd and Willow Cr, ca 1/2 mi NW of Jonesville. 1524 Comment
  CHSC67987  Monardella odoratissima James D. Jokerst 1989-7-3 3125 Butte Hwy. 70 4.05 mi E of Concow turnoff. Comment
  UC426945  Monardella odoratissima subsp. pallida E. B. Copeland 1930-8-4 452 Butte Jonesville 1550 Comment
  UC600443  Monardella odoratissima subsp. pallida E. B. Copeland 1930-7-28 Butte Jonesville Comment
  JEPS113188  Monardella sheltonii Lowell Ahart 2007-5-29 13940 Butte On the east side of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 3/4 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Bi 585 Comment
  RSA754450  Monardella sheltonii L. Ahart 2009-6-3 15822 Butte W side of Ten Mile House Road, about 100-200 yards NW of the table at the old homestead, Upper Bidwell Park, about 3/4 air miles SW of the intersection of Hwy 32 and Ten Mile House Road, about 10 miles NE of Chico. 232 Comment
  CHSC34130  Monochoria vaginalis L. Ahart 1981-9-19 3193 Butte In a rice field a little w of the Butte County Rice Experiment Station, ca. 3 mi w of Hwy 99 on Hwy 162, ca. 3 mi n of Biggs. 35 Comment
  SD130983  Monochoria vaginalis Lowell Ahart 1981-9-19 3193 Butte Butte County Rice Experiment Station 35 Comment
  CHSC56573  Montia parvifolia L. P. Janeway 1987-6-5 2144 Butte Along French Creek just south of mouth of Peavine Creek. At damp place among shrubs along dirt road. 624 Comment
  RSA500430  Muhlenbergia andina Vernon H. Oswald, L. Ahart 1989-8-15 3937 Butte Soda Ridge Road, 1.4 miles west of its junction with Coon Hollow Road, ca. 1.2 miles (air) north of Philbrook Reservoir. 1753 Comment
  UC1564753  Muhlenbergia andina V. Oswald and L. Ahart 1989-8-15 3937 Butte Soda Ridge Rd 1.4 mi n junction with Coon Hollow Rd (ca 1.2 air mi n of Philbrook Reservoir, on edge of shallow lake n of and just visible from road) 1752 Comment
Read comments Jun 20 2012
  CHSC112724  Muhlenbergia filiformis Lowell Ahart 2013-10-26 19222 Butte South side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. 1681 Comment
  CHSC47621  Muhlenbergia filiformis Lowell Ahart 1984-7-19 4732 Butte Along the edge of the dirt road, about 1 1/2 miles south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City. 1371 Comment
  SEINET10508182  Muhlenbergia filiformis Lowell Ahart 1985-10-12 Ahart 5198 Butte Near the east side of Kunkle Reservoir, about 2 miles south of Paradise. 503 Comment
  CHSC111402  Muhlenbergia mexicana Lowell Ahart 2012-6-21 18217 Butte About 1/4 of a clump, on dry soil, on the south side of Big Chico Creek, about 20 yards off the Freeway, Lower Bidwell Park, Chico. Uncommon. Riparian Woodland. 62 Comment
  JEPS116024  Muhlenbergia mexicana Lowell Ahart 2009-7-9 16023 Butte On the east side of Big Chico Creek, about 40 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 203 Comment
  CHSC38084  Muhlenbergia minutissima R. E. Preston 1982-8-25 360 Butte At margin of lakelet; S of Coon Hollow. 1755 Comment
  CHSC59050  Muhlenbergia minutissima Lowell Ahart 1992-7-21 6799 Butte On the sides of a lake, on the south side of Coon Hollow, about 2 (air) miles north-east of Philbrook Reservoir. 1737 Comment
  CHSC96807  Myosotis discolor Lowell Ahart 2007-5-22 13900 Butte In a small meadow at the parking area, Big Bald Rock, about 14 miles (air) northeast of Oroville. 893 Comment
  CHSC45423  Myosurus minimus Lowell Ahart 1980-5-4 2180 Butte On the sides of a small wash in a pasture, south-west of the intersection of Nelson Avenue and 20th. Street in Thermalito. 60 Comment
  CHSC65460  Myosurus minimus Vernon Oswald 1984-3-28 1110 Butte Upper Bidwell Park, Chico, ca. 100 ft s of the n boundary of the park 1200 ft e of the Wildwood Ave. entrance. 86 Comment
  CHSC65462  Myosurus minimus Vernon Oswald 1988-3-16 3257 Butte Butte Creek Canyon Ecological Reserve on the south side of Butte Creek e of Hwy 99 near the control valves of Durham Mutual Ditch. In a track. 67 Comment
  SEINET10536211  Myosurus minimus Lowell Ahart 1985-4-21 Ahart 4880 Butte Along the sides of Wyandotte Creek, south of Central House Road, north-west of Honcut, about 12 miles south of Oroville, Butte County. Comment
  UC1100015  Najas guadalupensis Herbert L. Mason, Verne Grant 1946-8-14 13043 Butte Butte Sink Comment
  CHSC24489  Nama lobbii M. S. Taylor 1976-6-28 1165 Butte Ca. 4 mi se of Jonesville on Scotts John Creek Rd, ca. 2 ft n of rd. 1828 Comment
  CHSC27228  Nandina domestica P. Moyer 1971-11-7 56 Butte CSUC campus. Front of Admin. Bldg., w side of door entrance. 60 Comment
  RSA754858  Nassella pulchra L. Ahart 2009-4-26 15617 Butte About 120 yards SW of Ten Mile House Road, Upper Bidwell Park, about 1/2 air miles SW of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 287 Comment
  UCD116084  Nasturtium officinale Charles Martin 1986-4-26 11 Butte California: Sutter Co. Sutter Buttes, Canyon SE of North Butte, R2E, T16N, Sec. 20, SW 1/4. Elev. ca. 600 ft. 182 Comment
  POM282330  Navarretia breweri Lyman Benson 1932-7-28 3974 Butte First summit, Oroville-Quincy. Sierra Nevada Range, Feather River watershed. 1829 Comment
  CHSC50415  Navarretia capillaris Vernon Oswald; Lowell Ahart 1990-6-27 4331 Butte Oro-Quincy Hwy at the south edge of Walker Plains, 0.3 mi west-northwest of Buckeye (site). 1536 Comment
  CHSC30951  Navarretia filicaulis L. Ahart 1980-7-4 2454 Butte Near the Oak Grove Cemetary, ca. 1/2 mi se of Hurleton. 600 Comment
  CHSC47065  Navarretia filicaulis R. A. Schlising; P. Broyles 1988-7-9 4573 Butte E of Paradise and Magalia, and N of Oroville and Jarbo Gap; along Rim Road. 792 Comment
  CHSC79542  Navarretia filicaulis G. F. Hrusa; T. D. Wilfred 1997-5-3 13973 Butte Northern California. Sierra Nevada. NE side of upper end of Paradise lake. Where last tributaries from E enter. 810 Comment
  JEPS107908  Navarretia filicaulis Lowell Ahart 2005-7-13 12151 Butte About 100 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown, about 12 miles (air) east of Oroville 759 Comment
  UC196280  Navarretia filicaulis A. A. Heller 1914-7-24 11626 Butte near Forest Ranch 731 Comment
  SEINET10969161  Navarretia filicaulis Mary Susan Taylor 1980-7-6 Taylor 3063 Butte T25N R3E se sec 10, Butte Meadows quad; on W side of Hwy 32, ca. 0.1 mi S of Loma, up on rocky open edge of Yellow Pine Forest. With R.A. Schlising. 1128 Comment
  CHSC84275  Navarretia heterandra Lowell Ahart; John Dittes, Josephine Guardino, Steve Green 2003-5-27 10216 Butte Rifle and Trap Range, northeast of Horseshoe Lake, north of Parking Area E, Upper Bidwell Park, about 1 1/2 miles east of Manzanita Avenue, Chico. 103 Comment
  UC1719865  Navarretia heterandra David Fruchter 1979-9-18 177 Butte Oroville Airport Comment
  UCD77884  Navarretia heterandra Robert E. Preston 2005-6-13 2353 Butte Ca. 4 mi NW of Oroville, in field along N side of Cottonwood Rd 54 Comment
  CHSC26807  Navarretia intertexta M. S. Taylor 1978-5-7 1611 Butte In Richvale vernal pools, ca. 20 mi s of Chico on w side of Hwy 99. 30 Comment
  UC879888  Navarretia leptalea subsp. leptalea A. A. Heller 1917-7-26 12817 Butte Butte Meadows 1280 Comment
  CHSC2375  Navarretia leucocephala R. Carter 1965-5-13 196 Butte Exact location unknown, but found somewhere along Cana Rd. ca. 9 mi. NE of Chico W of Hwy. 99E. 45 Comment
  UC75581  Navarretia leucocephala Mrs. Elbridge Miles Butte Comment
  UCR66594  Navarretia leucocephala subsp. leucocephala H. F. Copeland 1923-5-7 0612 Butte Sacramento Valley, Blavo 46 Comment
  CAS-BOT-BC230474  Navarretia nigelliformis var. nigelliformis A. A. Heller 1914-5-14 11402 Butte 8 miles N of Oroville Comment
  CAS-BOT-BC233623  Navarretia pubescens A. A. Heller; H. E. Brown 1902-5-14 5477 Butte Berry Canyon, near Clear Creek Comment
  CHSC30076  Navarretia squarrosa R. A. Schlising 1980-7-26 3921 Butte At Concow Reservoir, along Concow Road, 3.0 mi N of junction with Nelson Bar Road at Concow School. Roadside. 615 Comment
  CHSC12530  Navarretia tagetina J. Pitts 1973-5-2 182 Butte Ca. one eighth mi e of Clark Road on Pentz Road, s side of road. Comment
  CHSC50658  Nemacladus interior Lowell Ahart 1990-5-25 6495 Butte Lake Oroville, about 1/4 mile west of the Enterprise Boat Launch Area, about 1 1/4 miles north-west of the Enterprise Bridge across Lake Oroville. 274 Comment
  CHSC84917  Nemophila heterophylla W. Dobson 1980-5-25 21 Butte Ca. in Wagner Valley. 542 Comment
  RSA769679  Nemophila heterophylla L. Ahart 2009-4-3 15531 Butte North margin of gravel road, east of Cedar Grove Parking Area in Lower Bidwell park, Chico 67 Comment
  SEINET10497053  Nemophila heterophylla Mary Susan Taylor 1981-3-16 Taylor 3411 Butte T21N R4E southcenter sec 16; Cherokee q. E side of Truex Rd, ca. 0.5 mi s of its jct with Hwy 70, ca. 7 mi n of Oroville. Foothill Woodland; 1000 ft. 305 Comment
  SEINET12326949  Nemophila heterophylla R. A. Emmrich 1975-1 54 Butte ca 0.5 mi E of Butte Creek and 0.25 mi SE of Covered Bridge, 6 mi ESE of Chico 107 Comment
  UCSB63718  Nemophila heterophylla Blankenheim, Wendy 1991-4-16 Butte 150 yds. S of Butte Creek; .5 mi. W of Covered Bridge; 6.4 miles ESE of Chico; T. 22N., R. 2E.; sec. 25-midpoint near S boundary; Hamlin Canyon Quad.; 7.5 minute series 121 Comment
  CHSC115293  Nemophila pedunculata Lowell Ahart 2015-4-27 20088 Butte On the bottom of the stream, about 5/8 mile northwest of the iron gate along Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north of Oroville. 304 Comment
  UC726912  Nemophila pedunculata A. A. Heller 1929-3-14 14810 Butte near Hooker Oak; near Hooker Oak Comment
  SBBG128278  Nemophila pedunculata L. Ahart, J. Dittes 2009-3-20 15499 Butte open area along the Guardian Rock Trail, ca. 150 yards SW of the Ten Mi House Rd Trail, ca. 300 yards W of Hwy 32, W of the intersection of Hwy 32 and Ten Mi House Rd, upper Bidwell Park, ca. 10 mi NE of Chico 407 Comment
  CHSC703  Nemophila spatulata P. Delaplane 1965-5-4 55 Butte In meadow ca. 4-5 mi N of Lake Concow on W side of Forest Road # 24N05. 914 Comment
  CHSC20966  Nerium oleander M. S. Taylor 1975-9-8 904 Butte Back yard of President's House, California State University, Chico, campus. Comment
  SEINET10964650  Nicotiana acuminata var. multiflora Lowell Ahart, Peter Ahart 1983-8-10 Ahart 4270 Butte T18N R5E sec 14? Along La Porte Rd, ca. 4 mi ne of Bangor. Foothill Woodland; 350 m. 350 Comment
  CHSC10544  Nicotiana glauca Lowell Ahart 1962-4-10 Butte Near Gridley. 36 Comment
  RSA0006688  Nuphar lutea subsp. polysepala E. B. Copeland 1930-6-29 415 Butte Jonesville. 1700 Comment
  CDA3524  Nymphaea odorata T. C. Fuller 1969-8-19 18816 Butte North side of Nelson West Road just east of Chico-Butte City Road, Dodge Land. 0 Comment
  SEINET10472783  Odontostomum hartwegii Mary Susan Taylor 1980-4-27 Taylor 2568 Butte T22N R2E sc sec 25. On N side of Humbug Rd, ca. 0.5 mi upstream from Honey Run Covered Bridge, ca. 7 mi E of Chico; Foothill Woodland. With J.D. Jokerst. 122 Comment
  CHSC98693  Olea europaea L. P. Janeway 2007-12-17 9226 Butte Northern Sierra Nevada Foothills. About 15 m east of the east edge of Thermalito Diversion Pool (the bed of the Feather River pooled at a constant 68 m elevation level), about 370 m north of the railroad bridge. At base of old abandoned railroad or road cutbank. 73 Comment
  CHSC98644  Orcuttia tenuis Elena Alfieri 2008-6-25 Butte Sacramento Valley. Palermo. Collected in a cattle pond. 45 Comment
  CHSC43190  Oreostemma alpigenum var. andersonii Robert Banchero 1981-7-19 595 Butte Butte Creek House, ca 3 air mi NE of Jonesville. 1755 Comment
  UC426981  Oreostemma alpigenum var. andersonii E. B. Copeland 1930-7-26 486 Butte Jonesville 1550 Comment
  CHSC109784  Orobanche vallicola Lowell Ahart 2012-10-20 18509 Butte On the south edge of the paved park road, about 30 yards southeast of Table 2, east of the freeway, west of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  SBBG28970  Orthilia secunda E. B. Copeland 1930-8-7 Butte Jonesville 1500 Comment
  SEINET12326960  Orthocarpus attenuatus Unknown 1978-1 19 Butte ca 2.5 mi NE of jct Lassen Ave & Cohasset Rd, near Chico, 500 ft N of roadway 152 Comment
  SEINET12326989  Orthocarpus purpurascens Unknown 1984-1 2 Butte ca 5 mi E of Hwy 99, jct of Honey Run & Humbug Rds, SE side of road 107 Comment
  SEINET10592212  Oryza sativa Mary Susan Taylor 1978-9-8 Taylor 1898 Butte Around rice fields along Road 50, 4 mi N of Chico. In rice field. 61 Comment
  SEINET10925598  Oryzopsis miliacea James D. Jokerst, Lowell Ahart 1981-9-26 Jokerst 1478 Butte Along dirt road N of Big Chico Cr ca 200 m E of the Sacramento River. Riparian Woodland. 30 Comment
  CHSC54296  Osmorhiza brachypoda Vernon H. Oswald; Lowell Ahart 1991-6-5 4651 Butte Dirt road to Minnie-Ha-Ha Mine located on Big Chico Creek, on the west side of Hwy 32 ca. 1.5 miles (air) northwest of Platte Mtn Lookout, between Forest Ranch and Lomo. 762 Comment
  CHSC58871  Osmorhiza chilensis Lowell Ahart 1992-7-29 6888 Butte About 1 mile north-east of the Carr Mine, about 3/4 mile north-west of Lotts Lake. 1798 Comment
  CHSC1173  Oxalis corniculata M. Harless 1930-3-15 Butte Chico. 57 Comment
  CHSC21143  Oxypolis occidentalis M. S. Taylor 1975-8-31 893 Butte On Ernies Island in Butte Creek, ca. 50 ft s of Humboldt Rd, ca. 1/2 mi e of Butte Meadows. 1341 Comment
  CHSC63801  Oxypolis occidentalis S. C. Morey 1983-8-3 696 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct eith Humboldt Rd. at Butte Meadows. 393 Comment
Read comments Oct 5 2007
  CAS-BOT-BC316897  Packera eurycephala var. lewisrosei John Thomas Howell 1962-6-16 37616 Butte Nelson Bar 213 Comment
  CHSC48196  Packera eurycephala var. lewisrosei Vernon Oswald 1984-5-21 1198 Butte Magalia Serpentine. 707 Comment
  JEPS59016  Packera eurycephala var. lewisrosei John Thomas Howell 1962-6-16 37555 Butte Magalia Sierra Nevada 731 Comment
  CHSC28559  Panicum acuminatum var. acuminatum M. S. Taylor 1978-7-21 1839 Butte Big Bald Rock, ca. 2 mi e of Lake Madrone. 997 Comment
  CHSC30524  Panicum capillare Diane H. Ikeda 1979-10-7 179 Butte Ca. 0.9 mi s of Chico city limits on Dayton Rd. Roadside. 28 Comment
  RSA718155  Panicum dichotomiflorum L. Ahart 2006-10-13 13505 Butte Peter Ahart Ranch, about 1.5 miles north and 1 1/8 miles east of Honcut, about 12 miles southeast of Oroville 34 Comment
  UC1037260  Panicum dichotomiflorum subsp. dichotomiflorum E. Wilson 1934-9-3 49 Butte Biggs Rice Station Comment
  SEINET10563835  Panicum huachucae var. fasciculatum Mary Susan Taylor 1979-8-4 Taylor 2178 Butte T23N, R5E center of S border sec. 22/27. Ca. 1 mile N of Cresta Powerhouse on Hwy. 70, ca. 30 miles N of Oroville; granitic soils. Comment
  CHSC43941  Papaver somniferum Vernon Oswald 1988-4-29 3290 Butte Meridian Rd., 0.4 mi e and then n of Hwy 99. On the edge of the road. 57 Comment
  CHSC40879  Parentucellia viscosa Lowell Ahart 1985-5-20 5008 Butte Near the Little Pump, Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  SEINET10449695  Parvisedum pumilum Lowell Ahart 1983-4-10 Ahart 3932 Butte Sides and bottoms of small vernal pools, near the steel power line, ca. 0.5 mi ne of jct of Hwy 99 & Pentz Rd, ca. l6 mi s of Chico. Valley Grassland; 65 m. 65 Comment
  CHSC8571  Paspalum dilatatum M. MacArthur 1968-6-23 291 Butte Ca. 30 ft. SW of Big Chico Creek up slope by Esplanade bridge, Chico State College. 60 Comment
  RSA755410  Paspalum dilatatum L. Ahart 2009-6-30 15969 Butte E side of Ten Mile House Road, about 30 yards E of Big Chico Creek, Upper Bidwell Park, about 3/4 air miles W of Highway 32, about 10 miles NE of Chico. 234 Comment
  UCD88740  Paspalum dilatatum J. Jones 1923-9-15 s.n. Butte Biggs Rice Station. Comment
  JEPS127627  Paspalum distichum B. Castro 2008-9-11 1774 Butte 10 air miles W of Gridley, 0.4 mi S of Gridley Rd., off SE bank of Cherokee Canal 0,2 mi NE of Sward bend in canal. Ca 40 feet out from levee toe. Comment
  CDA42963  Paspalum urvillei L. Ahart 2013-7-1 18822 Butte On the east side of Black Bart Road, about 3/4 mile (by road) southwest from the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown. Comment
  CHSC42058  Paxistima myrsinites Lowell Ahart 1986-11-8 5431 Butte Along Bidwell Creek, along the dirt road, about 3 air miles north-west of the Brush Creek Work Center, about 25 miles north-east of Oroville. 609 Comment
  CHSC96237  Pectocarya pusilla R. Fischer 2006-4-10 992 Butte Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve off Lookout Trail. Plants growing on a steep rocky, spring covered, hillside overlooking Big Chico Creek. 518 Comment
  JEPS107355  Pectocarya pusilla Lowell Ahart, Paul Maslin, John Dittes 2005-3-17 11671 Butte Big Chico Creek Ecological Reserve. Ridge top, on the east side of a very poor dirt road, about 1/4 mile west of the Indian Cave, about 1 mile west of Big Chico Creek, about 4 1/4 miles (air) northeast of Chico 487 Comment
  UC103230  Pedicularis densiflora Mrs. R. M. Austin July 1890 111 Butte Colby Comment
  UCD123334  Pedicularis densiflora M. Vincent 1961-3-20 9 Butte Harrison Road and Stern; Paradise, California. 609 Comment
  CAS-BOT-BC69335  Pellaea brachyptera E. B. Copeland 1930-7-7 401 Butte Jonesville 1700 Comment
  CHSC40284  Pellaea brachyptera Lowell Ahart 1985-6-17 5053 Butte Lumpdin Ridge, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 975 Comment
  CAS-BOT-BC67553  Pellaea mucronata Lowell Ahart 1985-6-17 5055 Butte 8 miles north-east of Feather Falls, 1 1/2 miles east of Camp 18 975 Comment
  CAS-BOT-BC67554  Pellaea mucronata E. B. Copeland 1899-4-1 s.n. Butte Chico Comment
  SEINET10470235  Pellaea mucronata Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4855 Butte Serpentine Point, west of Yankee Hill. Comment
  JEPS116127  Pellaea mucronata var. mucronata Lowell Ahart 2009-4-22 15601 Butte West side of Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  RSA769602  Pellaea mucronata var. mucronata L. Ahart 2009-4-22 15601 Butte W side of Guardians Trail, about 100 yards N of Pine Trail, Upper Bidwell Park, W of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 382 Comment
  UC1609391  Pellaea mucronata var. mucronata Lowell Ahart 1993-7-6 7063 Butte ca. 9 air mile nw of Lost Creek Reservoir Dam (Mooreville Ridge, Jackass Flat); Jackass Flat, Mooreville Ridge 1158 Comment
  UC406903  Penstemon azureus var. angustissimus David D. Keck 1928-6-16 451 Butte 1.5 mi s Berry Creek Inn; Sierra Nevada, s of Berry Creek Inn 609 Comment
  RSA712797  Penstemon azureus var. azureus L. P. Janeway 2005-6-26 8429 Butte Northern High Sierra Nevada, S facing slope 0.4km S of top of Batchelor Point, 0.6 km E of top of Rocky Ridge and Rim road (Ponderosa Way). 945 Comment
  NY91054  Penstemon corymbosus var. puberulentus H. M. Hall 1914-7-19 6763 Butte Richardson Springs near Chico. Upper Sonoran Zone. 152.4 Comment
  CHSC27966  Penstemon gracilentus M. S. Taylor 1978-7-19 1780 Butte On e side of Upper Scotts John Rd, ca. 2 mi n of tis jct with Scotts John Rd, ca. 6 mi ne of Jonesville. 1889 Comment
  CHSC42774  Penstemon gracilentus L. P. Janeway 1987-7-5 2443 Butte 0.4 mi east on a spur rd from the Concow Rd, which is 1.0 mi SW of Jones Mdw. 1798 Comment
  POM43798  Penstemon heterophyllus subsp. purdyi C. C. Bruce 1897-04 2009 Butte Little Chico. Comment
  JEPS107526  Penstemon heterophyllus var. heterophyllus Lowell Ahart 2005-7-12 12138 Butte On the east side of Encina Grade Road (Bloomer Hill Road) (Forest Road 21N39), about 3/4 mile (air) south of Bloomer Hill, about 5 miles west of Oroville Quincy Highway 733 Comment
  NY601733  Penstemon heterophyllus var. purdyi L. Ahart 1980-6-19 2391 Butte Along Swedes Flat Road, near Bangor. 320 Comment
  CHSC1869  Penstemon laetus var. leptosepalus E. Walker 1932-6-13 Butte Magalia. 731 Comment
  CHSC43076  Penstemon laetus var. leptosepalus R. A. Schlising; J. D. Jokerst 1980-7-2 3809 Butte NE of Forest Ranch, 2.3 mi E and SE of Hwy 32 along Garland Road. 902 Comment
  RSA34041  Penstemon laetus var. leptosepalus A. A. Heller 1938-5-28 15123 Butte 25 miles from Oroville on Feather River Hwy. Comment
  UC1063502  Penstemon laetus var. leptosepalus P. L. Johannsen 1936-7-16 917 Butte 1 3/4 mi ese Butte Mdws; Lassen National Forest, Paynes Creek Quad. Comment
  UC103112  Penstemon laetus var. leptosepalus D. Cleveland 1882-7-14 141 Butte Sutton House Comment
  CHSC1872  Penstemon neotericus M. Underhill 1952-7-2 Butte 609 Comment
  CHSC44723  Penstemon neotericus R. Banchero 1980-6-26 265 Butte Along Humbolt Rd 3.1 mi SW of its jct with the Skyway, 1.9 mi NE of its jct with Hwy 32. 1365 Comment
  CHSC44700  Penstemon newberryi R. Banchero 1980-7-2 278 Butte Upper Butte Creek, Ca 2.5 mi directly W of Inskip. 896 Comment
  UC600435  Penstemon newberryi var. newberryi H. F. Copeland 1932-7-19 Butte Jonesville, above Butte Creek opposite the Fishersman's Trail Comment
  CHSC36300  Penstemon personatus M. S. Taylor 1982-8-16 4998 A Butte Along rd from Bald Mt to High Rock Ravine, ca. 4 air mi ne of Stirling City. 1706 Comment
  CHSC43130  Penstemon personatus R. Banchero; R. Schlising 1981-7-19 609 Butte 1 mi e of Bald Mt lookout tower on Bald Mt. 1780 Comment
  SEINET5329274 Image available Penstemon personatus S. Urie 1988-8-18 s.n. Butte 1554 Comment
  SEINET5329278 Image available Penstemon personatus S. Urie 1988-8-18 s.n. Butte 1646 Comment
  CHSC10703  Pentagramma triangularis Lowell Ahart 1971-3-17 Butte Peter Ahart Ranch, Honcut. 45 Comment
  SEINET12320809  Pentagramma triangularis Unknown 1974-1 16 e Butte 7 ft S of Honey Run Road & 4.1 mi E of Honey Run Covered Bridge 305 Comment
  CAS-BOT-BC77137  Pentagramma triangularis subsp. semipallida Peter H. Raven 1954-4-17 6620 Butte 10 miles above Oroville on road to Pulga Comment
  CHSC32116  Pentagramma triangularis subsp. semipallida L. Ahart 1976-7-7 1171 Butte Along edge of rd to Little North Fork of the Feather River, ca. 2 mi s of Junction House. 1219 Comment
  CAS-BOT-BC77136  Pentagramma triangularis subsp. semipallida Lowell Ahart 1975-3-7 s.n. Butte Along road 1/2 mile E. of the Ponderosa Dam on the South Fork of the Feather River, north of Forbestown. Comment
  SEINET13944948 Image available Perideridia bolanderi A. A. Heller 1914-1 11572 Butte Volcanic hills 5 miles east of Oroville in the Digger pine belt. Comment
  CHSC102738  Perideridia kelloggii Lowell Ahart 2009-7-9 16028 Butte About 20 yards east of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 234 Comment
  CHSC102818  Perideridia kelloggii Lowell Ahart 2009-6-30 15972 Butte On the east bank of Big Chico Creek, on the west side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 234 Comment
  CHSC40232  Perideridia lemmonii Vernon Oswald 1985-7-2 1875 Butte Humboldt Rd. 0.4 mi e of its jct. with the Skyway (Bull Hill Rd.) in Butte Meadows. 1325 Comment
  SEINET10454549  Perideridia lemmonii Mary Susan Taylor 1977-8-17 Taylor 1467 Butte In Montane Meadows around Julie<s Creek between Old Humboldt Road and Butte Creek, ca. 3.4 mi E of where Butte Creek crosses Humboldt Road near Butte Meadows. 1341 Comment
  CHSC84030  Persicaria amphibia Lowell Ahart 2003-6-16 10287 Butte In a ditch on the west side of Wickman Road, about 1 mile south of Richvale West Road, about 1 1/2 miles (air) southwest of Richvale. 28 Comment
  CHSC34192  Persicaria hydropiper L. Ahart 1981-9-19 3177 Butte Along edge of the road just a few feet n of the Arch Rock Tunnel, on Hwy 70, ca. 10 mi s of Storrie. 550 Comment
  CHSC116330  Persicaria lapathifolia Lowell Ahart 2015-10-16 20555 Butte On the west side of the Feather River, about half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. 26 Comment
  RSA0037107  Persicaria lapathifolia Lowell A. Ahart 2013-11-17 19262 Butte Along the sides of McCabe Creek, below the high water line of Lake Oroville, about 5/8 mile southwest of the Enterprise Bridge across Lake Oroville. 245 Comment
  CHSC94595  Persicaria punctata Lowell Ahart 2006-9-11 13291 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  CHSC38463  Phacelia cicutaria Vernon Oswald 1983-5-1 401 Butte Upper Bidwell Park, Chico, on the edge of the canyon rim overlooking Chico Creek ca. 400 ft w of Parking Area P which is located 2.0 mi e of the power lines. 198 Comment
  UC671701  Phacelia heterophylla subsp. virgata Lincoln Constance 1941-5-28 2829 Butte Magalia Sierra Nevada foothills, South Branch of Feather River 518 Comment
  UC1564794  Phacelia procera V. Oswald and L. Ahart 1989-7-12 3851 Butte ca 2 air mi sw Lotts Lake (ca 3 air mi se of Philbrook Reservoir); Big Kimshew Creek 1926 Comment
  SD4079  Phacelia racemosa E. B. Copeland 11-13 Jul 1931 Butte Jonesville, on bare stony ridge between Jones and North Willow Creeks. 1700 Comment
  CHSC38467  Phacelia tanacetifolia Vernon Oswald 1983-3-14 181 .5 Butte Upper Bidwell Park, Chico, on the north rim ca. 0.9 mi e of the power lines. 320 Comment
  CHSC60987  Phacelia vallicola Lowell Ahart 1993-6-20 6989 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  SEINET10836231  Phalaris canariensis Mary Susan Taylor 1979-11-11 Taylor 2279 Butte T20 N R1E. Ca. 6 mi S of Chico, on W side of Goodspeed-Watt Road. With Jim Jokerst. 34 Comment
  CAS-BOT-BC250862  Phleum pratense H. F. Copeland 1920-8-29 144 Butte Jonesville Meadow 1219 Comment
  CHSC64261  Phleum pratense S. C. Morey 1983-7-28 630 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC6628  Phlox M. MacArthur 1968-6-13 323 Butte SE yard of building V, Chico State College campus. 60 Comment
  CHSC48608  Phoradendron densum Vernon Oswald 1982-11-14 16 Butte Coutolenc Rd. 300 ft n of its junction with the Skyway at Magalia. 707 Comment
  CAS-BOT-BC135097  Phoradendron juniperinum Flower Shaw 1928-4-1 s.n. Butte Cherokee School Comment
  CHSC85445  Phoradendron libocedri R. D. Fischer; Jenny Marr 2003-11-23 15 Butte Sierra Nevada foothills, west of Hwy 70 between Jarbo Gap and Pulga, on logging rd U30 off Rim Rd out of Jarbo Gap. 853 Comment
  SEINET10492847  Phoradendron tomentosum subsp. macrophyllum Lowell Ahart 1983-3-27 Ahart 3904 Butte Peter Ahart Ranch, ca. 3 mi NE of Honcut. Valley Grassland; 50 m. 50 Comment
  RSA262354  Phoradendron villosum Kathy Corson 1969-4-6 28 Butte Upper Park Road in Big Chico Canyon, 8 miles NE of Chico. 61 Comment
  CHSC48856  Physocarpus capitatus Vernon Oswald; M. S. Taylor 1985-5-30 1789 Butte Four Trees Rd. 0.5 mi e of Hwy 70. Along the road. 536 Comment
  CHSC52369  Physocarpus capitatus L. P. Janeway 1989-5-17 3251 Butte Near rd to Forbestown Diversion Dam 4.1 mi from Forbestown Rd. 640 Comment
  SEINET10483402  Physocarpus capitatus Mary Susan Taylor, Vernon H. Oswald 1985-5-30 Taylor 5511 Butte Trees Road between Hwy 70 and Coyote Gap, ca. 25 air mi NE of Oroville. Yellow Pine Forest. Comment
  CHSC69109  Phytolacca americana Lowell Ahart 1997-7-31 7758 Butte On the east side of the native plant garden, Durham Elementary School, Durham. 57 Comment
  RSA518693  Phytolacca americana L. Ahart 1990-9-21 6598 Butte Peter Ahart Ranch, about 2.5 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 37 Comment
  SEINET11934478  Phytolacca americana L. Ahart, Oswall, V. 1985-1 5159 Butte Along La Porta Road about 4 mi NE of Bangor 305 Comment
  UCD98425  Phytolacca americana var. americana B. F. Smith 1968-10-9 92 Butte 1 mile west of Old Forbestown, Plumas National Forest. 853 Comment
  CAS-BOT-BC76938  Pilularia americana Lowell Ahart 1980-4-19 2092 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC76941  Pilularia americana Lowell Ahart 1973-4-15 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  CHSC32747  Pinus attenuata M. S. Taylor; L. Hanson 1981-4-16 3548 Butte Both sides of rd 21N80, ca. 1 mi nw of its jct with Zink Rd, ca. 1.5 air mi nw of Big Bald Rock, ca. 2 air mi e of Lake Madrone. 883 Comment
  CHSC41469  Pinus contorta Lowell Ahart 1986-5-20 5275 Butte West of the road on the west side of the Sly Creek Reservoir, about 1 mile north of the Sly Creek Dam. 1097 Comment
  SEINET10866943  Pinus lambertiana Mary Susan Taylor 1975-9-12 Taylor 913 A Butte Yellow Pine Forest, ca. 24 mi NE of Chico, ca. 500 m W of Hwy 32; with Torreya californica, Ceanothus prostratus. 1067 Comment
  SD14  Pinus monticola E. B. Copeland 1929-7-17 Butte above Jonesville, on summit ridges and north slopes 2000 Comment
  CAS-BOT-BC79016  Pinus ponderosa John Thomas Howell 1962-6-15 37431 Butte Magalia 731 Comment
  CAS-BOT-BC79017  Pinus ponderosa A. A. Heller 1917-7-26 12850 Butte Butte Meadows 1280 Comment
  SDSU1998  Pinus sabiniana Harvey 1939-7-30 2512 Butte Near Oroville Comment
  CHSC86581  Piperia elongata L. P. Janeway; Christine Hantelman 2003-6-19 7852 Butte Northern Sierra Nevada Foothills. Along south edge of Middle Fork Feather River arm of Lake Oroville, half way between mouth of South Fork Feather River arm of the lake and mouth of Bean Creek. 277 Comment
  CHSC43799  Piperia michaelii Vernon Oswald 1985-5-13 1753 Butte Upper Bidwell Park, Chico, at the Indian caves near rimrock above the Police Pistol Range. 146 Comment
  CHSC65868  Piperia transversa L. P. Janeway 1995-7-15 4856 Butte Watson Ridge, about 1.7 mi east-northeast of its western end. Along Road 21N25A. 1097 Comment
  CHSC40292  Piptatherum miliaceum Ahart; Jokerst 1985-5-10 4965 Butte About 1/4 mile west of a small stream, 1/2 mile south of Box Hall Flat, about 1 mile east of Potter Ravine, about 2 and 3/4 miles north-east of Oroville Dam. 320 Comment
  CHSC27196  Pistacia chinensis P. Moyer 1971-10-1 19 Butte CSUC Campus. S side of Bidwell Mansion Along So-wil-len-no Ave. 60 Comment
  SEINET10529819  Pityrogramma triangularis Mary Susan Taylor 1981-3-24 Taylor 3439 Butte Two mile stretch along both sides of Feather River Hwy (70), just ne of Pulga to Cresta Powerhouse, ca. 20 mi ne of Oroville; granite gravels & soil; ca. 1700 ft. T23N R5E Pulga quad. 518 Comment
  SEINET10529961  Pityrogramma triangularis var. semipallida Mary Susan Taylor 1980-2-17 Taylor 2361 Butte T20N R6E ne sec 5. Along a dirt road in Yellow Pine Forest, ca. 1/4 mi SW of Lower Forbestown Road, ca. 3 mi W of Forbestown. 396 Comment
  CHSC34718  Plagiobothrys austiniae M. S. Taylor 1980-3-1 2338 Butte On north facing bluffs looking into Nance Canyon, ca. 1/4 mi n of Neal Rd, ca. 3 mi e of its jct with Hwy 99, ca. 7 mi s of Chico. 121 Comment
  JEPS117198  Plagiobothrys austiniae Lowell Ahart 2010-5-14 16656 Butte In meadow east of the tracks of an old road, Disc Golf Area, about 100 yards west of the entrance to the Disc Golf Area, about 120 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 372 Comment
  POM196508  Plagiobothrys canescens A. A. Heller 1926-4-21 13935 Butte Along Rock Creek, 7 mi. north of Chico 91 Comment
  CHSC38275  Plagiobothrys fulvus Vernon Oswald 1983-3-14 180 Butte Upper Bidwell Park, Chico, on the north rim ca. 0.9 mi e of the power lines. Beside the jeep trail. 320 Comment
  CHSC35064  Plagiobothrys glyptocarpus R. A. Schlising 1981-4-11 4020 Butte Chico, between Hwy 32 and Humboldt Road. 76 Comment
  CHSC28992  Plagiobothrys greenei J. D. Jokerst 1980-3-27 522 Butte N of Chico Muni Airport, E of Cohasset Hwy. 97 Comment
  UCR212286  Plagiobothrys greenei Ayzik Solomeshch 2003-4-9 s.n. Butte Wurlitzer Reserve, about 10 mi. north from Chico on Hwy 99, west side of the road Comment
  SEINET10497376  Plagiobothrys greenei Mary Susan Taylor 1978-4-14 Taylor 1567 Butte On E side of Williams Road in Valley Grassland, ca. 1/4 mi N of Pentz Road, on Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 30 Comment
  SEINET10837186  Plagiobothrys greenei Mary Susan Taylor 1975-4-29 Taylor 541 Butte Abundant in fields ca. 50-500 yds S of Pentz Road, ca. 1/4 mi E of Hwy 99, ca. 15 mi S of Chico. With Layia fremontii, Achyrachaena mollis, Delphinium spp. Comment
  CHSC113448  Plagiobothrys hispidulus Lowell Ahart 2014-7-10 19627 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CHSC65331  Plagiobothrys hispidulus Lowell Ahart 1995-10-3 7667 Butte Along the north side of Butte Creek, about 150 yards east of the bridge across Butte Creek, in Butte Creek House Meadow, about 2 1/2 miles (air) north-east of Snag Lake. Meadow. 1767 Comment
  UC480700  Plagiobothrys nothofulvus H. F. Copeland 1923-2-25 600 Butte cliff above Butte Creek Comment
  CHSC109114  Plagiobothrys scriptus Lowell Ahart 2012-3-23 17798 Butte Botttom of a small path, 90 feet north of a large Gray Pine, north end of the Disc Golf Area, about 50 yads west of Highway 32, about 5 miles (air0 northeast of Chico. 395 Comment
  JEPS104013  Plagiobothrys shastensis Lowell Ahart 2003-5-9 10124 Butte North of the Larkin Rd Boat Ramp, on the n side of the access road to the boat ramp at the Thermalito Afterbay, ca 300 yd w of Larkin road, ca 1 1/4 mi south of the Oroville Airport, ca 5 mi (air) sw of Oroville. 38 Comment
  CDA5729  Plagiobothrys stipitatus var. micranthus L. Ahart 2005-5-11 11807 Butte About 1 mile south of Beatson Hollow, about 1 1/2 miles southwest of the poor dirt road off of Cherokee Road, south part of North Table Mountain, about 7 miles (air) north of Oroville. Comment
  CHSC113391  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2014-6-1 19533 Butte Manmade shallow duck field, about 50 yards south of Lower Honcut Road, about 50 yards west of the Railroad, about 1 3/4 miles (air) southwest of Honcut. 23 Comment
  CHSC43551  Plagiobothrys stipitatus var. micranthus Lowell Ahart 1977-3-29 1234 Butte In the borrow area about 5 miles south-west of Oroville. 30 Comment
  JEPS119686  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2012-5-2 17960 Butte About 20 yards west of the Horseshoe Lake Dam, Upper Bidwell Park, about 1 1/4 miles east of Chico. Comment
  JEPS98580  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2000-5-13 8352 Butte 5 air miles SW of Oroville (S side of the access road to the boat ramp at the Thermalito Afterbay, W of Larkin Road, 1 1/4 mi S of the Oroville Airport) 42 Comment
  CDA40654  Plagiobothrys stipitatus var. micranthus L. Ahart 2002-5-7 9614 Butte About 30 yards east of the pond on the east side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. Comment
  CHSC46081  Planodes virginica Lowell Ahart 1989-3-20 6192 Butte In a prune orchard, west of the intersection of Highway 70 and Lower Honcut Road, about 3 miles west of Honcut, about 13 miles south of Oroville. 30 Comment
  CHSC58262  Planodes virginica Lowell Ahart 1992-4-17 6747 Butte In a rice field, on the east side of Goodspeed Watt Road, about 1 1/4 miles south of the Butte City Highway. 30 Comment
  RSA691927  Planodes virginica L. Ahart 2003-5-9 10123 Butte Waste area along the SW corner of a prune orchard, on the N side of Evans Reimer Road, about 3/4 mile W of Block Road, about 3 miles (air) SW of Gridley. 24 Comment
  CHSC28984  Plantago bigelovii R. A. Schlising 1980-3-23 3522 Butte E of Chico and SW of Paradise along Skyway. 289 Comment
  CHSC33702  Plantago bigelovii L. Ahart 1981-4-6 2745 Butte A little SE of Graylodge Waterfowl Mgmt Area HQ, ca. 8 mi swof Gridley. 35 Comment
  CHSC39622  Plantago bigelovii Lowell Ahart 1983-4-10 3919 Butte South of a large wash, 1/10 mile east of the large barn, about 1 1/4 miles north-east of Hwy 99 and Pentz Road. 65 Comment
  SEINET10499841  Plantago bigelovii Mary Susan Taylor 1975-4-18 Taylor 482 Butte SW corner of Broyles Rd and Hwy 99, ca. 6 mi N of Chico; Valley Grassland. Associates: Orthocarpus erianthus and attenuatus, Layia fremontii, Limnanthes alba. 61 Comment
  SEINET12334063  Plantago bigelovii L. R. Perry 1988-1 9 Butte vic. Salmon Hole, ca 5 mi E of Chico Municipal Golf Course 122 Comment
  CHSC90966  Plantago coronopus L. P. Janeway 2005-5-9 8385 Butte Northern Sierra Nevada Foothills. Northwest side of Hwy 70 0.6 km southwest of Pentz Road. 207 Comment
  CHSC54364  Plantago elongata M. Bailey 1991-4-19 566 Butte Butte College campus, ca 300 ft e of Williams Road, on western side of Well #3, ca 1/4 mi n of Pentz Road. 85 Comment
  CHSC58272  Plantago elongata Lowell Ahart 1992-3-28 6740 Butte Growing on the south side of the spillway of Oroville Dam, on the east side of Oroville Dam. 274 Comment
  CHSC34412  Plantago erecta R. M. Winchell 1980-4-17 1 Butte Covered Bridge along Butte Creek. Comment
  JEPS127085  Plantago erecta Lowell Ahart 2016-4-15 20752 Butte About 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. Comment
  UC1125625  Plantago erecta C. G. Albertus 1933-5-29 6 Butte 1.5 mi n Wick; Chico Quad. Comment
  SEINET10499852  Plantago erecta Mary Susan Taylor 1980-3-1 Taylor 2353 Butte T21N R3E nw 1/4 sec 5. Near Elliot Spring House, S side of Neal Road, ca. 2 mi SW of Paradise. 302 Comment
  SEINET8205338  Plantago erecta Theresa Costa 1982-4-15 11 Butte 7 mi. W of Oroville; 20 ft N table Mtn. Rd., parallel to Hwy 70. Comment
  UCSB50205  Plantago erecta Gray, John 1976-4-10 Butte Along roadside; 4 miles south of Oroville on Highway 70; T19N R3E Sec. 25, SE quarter 30 Comment
  CHSC61323  Plantago lanceolata Lowell Ahart 1993-7-23 7095 Butte On a large gravel bar on the west side of Fall River, about 100 yards west of the bridge across Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  CHSC66442  Plantago major Vernon H. Oswald; Lowell Ahart 1996-6-10 7744 Butte Sacramento River Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service Parcel between 7 Mile Lane and the Sacramento River. 28 Comment
  JEPS124275  Plantago major Lowell Ahart 2015-11-18 20663 Butte About 1 1/2 miles southeast of intersection of Palm Avenue and Larkin Road, about 5 miles (air) northeast of Gridley. Comment
  UCSC008327  Plantago pusilla Lowell Ahart 2012-5-4 17838 Butte 302 Comment
  CHSC49682  Platanthera leucostachys Vernon Oswald 1983-6-22 735 Butte Soda Spring Campground near Calif. Hwy 32, 17.8 mi n-e of Forest Ranch. Beside Chico Creek. 1112 Comment
  CHSC93988  Platanthera leucostachys R. D. Fischer 2004-6-20 784 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. Above pond area and around upper stream edges. 1371 Comment
  CHSC51947  Platanthera sparsiflora L. P. Janeway 1987-7-5 2448 Butte 0.4 mi E on a spur rd from the Concow Rd, which is 1.0 mi SW of Jones Mdw. 1798 Comment
  CHSC38588  Platanus acerifolia Vernon Oswald 1983-7-21 889 Butte Upper Bidwell Park, Chico, at the n-e edge of the parking lot at the Horse Arena. 79 Comment
  CAS-BOT-BC93158  Platanus racemosa A. A. Heller 1914-3-12 11192 Butte Canon [Canyon] of Big Chico Creek east of Chico. 68 Comment
  CHSC3819  Platystemon californicus L. E. Dunkel 1965-4-20 28 Butte Scattered along road bank ca 1.5 mi n of main entrance gate to Chico Municipal Airport. 35 Comment
  CHSC30887  Plectritis macrocera J. D. Jokerst 1979-4-6 1186 Butte Top of North Table Mt, W edge of Mt. 365 Comment
  CHSC60694  Plectritis macrocera Vernon H. Oswald; James Snowden 1993-4-7 5252 Butte Near the SE rim of Hamlin Canyon E of the cattle barns on the McKnight Ranch, E side of Hwy. 99 between Durham-Pentz and Neal roads, S of Chico. 182 Comment
  CHSC29796  Pleuricospora fimbriolata M. S. Taylor; J. D. Jokerst, R. Schlising 1980-6-14 2868 Butte On trail embankment, to Big Bald Rock, ca. 3 mi e of Lake Madrone. 997 Comment
  HSC72943  Pleuricospora fimbriolata M. S. Taylor 1981-4-27 3560 Butte Ridge between FS 21N33 and 21N80, Galen Ridge, 1 mi. SW of Bald Rock Rd, 0.5 mi. N of Zink Rd., 2 mi. SW of Brush Creek. 1006 Comment
  CHSC41309  Poa S. C. Morey 1983-7-22 545 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
Read comments Mar 7 2011
  CAS-BOT-BC244402  Poa annua Javier Penalosa 1962-6-18 2462 A Butte Near confluence of French and Peavine Creeks 609 Comment
  RSA718083  Poa bolanderi L. Ahart 2006-7-16 12972 Butte About 20 yards east of the poor dirt road, About 100 yards south of the cabin, About 0.75 mile (air) northwest of Jonesville, About 5 miles (air) northeast of Butte Meadows. 1570 Comment
  CHSC38845  Poa compressa Vernon Oswald 1983-6-24 762 Butte Upper Bidwell Park, Chico, in the bed of Lindo Channel near the diversion weir. 79 Comment
  CHSC61548  Poa palustris Lowell Ahart 1993-7-6 7053 A Butte On the edges of a meadow, north of the dirt road, about 1/4 mile west of the Lost Creek Reservoir. 1036 Comment
  SEINET9349748  Poa pratensis Unknown 1931-6-22 606 Butte Butte Comment
  CHSC100913  Poa secunda subsp. secunda R. A. Schlising; R. Banchero 1981-5-19 4061 Butte Lumpkin Ridge, east of village of Feather Falls. 1280 Comment
  UCD80600  Poa secunda subsp. secunda CNPS SN Foothill Team 2005-3-29 SNFN 0068 a Butte CDFG North Table Mountain Wildlife Area, along western border, outside of Oroville, ca. 1 mile southwest of parking area. 362 Comment
  UCD91615  Poa secunda subsp. secunda A. A. Heller 1915-6-10 11956 Butte Little Summit in the Sierra Nevada. 1432 Comment
  UCD91620  Poa secunda subsp. secunda A. A. Heller 1917-4-15 12678 Butte 10 miles N of Chico. 64 Comment
  UCD92073  Poa tenerrima William Anderson 1965-4-24 s.n. Butte Table Mountain. Comment
  CHSC773  Pogogyne zizyphoroides V. Holt 1935-5-7 Butte Centerville Rd. 60 Comment
  UC1303183  Pogogyne zizyphoroides A. A. Heller 1926-3-29 13915 Butte 9 miles north of Chico Comment
  RSA0022179  Pogogyne zizyphoroides A. A. Heller 1926-3-29 13915 Butte 9 miles north of Chico Comment
  UC187622  Pogogyne zizyphoroides Mrs. R. M. Austin May 1883 270 Butte Adobe Flats Comment
  CHSC33249  Polemonium occidentale R. A. Schlising 1980-7-8 3862 Butte Meadow N of Butte Creek and west of Cherry Hill Campground, several mi NE of Butte Meadows. Comment
  CAS-BOT-BC167552  Polygala cornuta var. cornuta John Thomas Howell 1962-6-15 37473 Butte Magalia 731 Comment
  CAS-BOT-BC167554  Polygala cornuta var. cornuta C. R. Quick 1951-8-21 51 100 F Butte Near Lomo Junction Comment
  UCR219092  Polygonum amphibium var. emersum George K. Helmkamp, E. A. Helmkamp 2009-9-5 15579 Butte Sacramento Valley, Lower Honcut Road, 1.2 miles east of its junction with CA-70, 1.85 mi. WSW (258 deg. ) of Honcut, 7.2 mi. SE (114 deg. ) of Gridley 35 Comment
  CHSC92508  Polygonum aviculare Lowell Ahart 2005-12-11 12521 Butte On the sides of small ditches, on the Rice Experiment Station, between the Main Ditch and Stine Lateral, on the north side of Hamilton Road, about 1/4 mile east of Riceton Highway, about 2 1/4 miles (air) east of Biggs. 30 Comment
  CAS-BOT-BC109140  Polygonum bidwelliae Lowell Ahart 1984-5-7 4593 Butte About 0.5 mile north and a little east of Kunkle Res., about 2 miles south of Paradise. 600 Comment
  CHSC60131  Polygonum bidwelliae B. Castro; L. P. Janeway 1992-5-9 451 Butte On SE-facing slope of unnamed canyon SE of Neal Road, on lava benches. 73 Comment
  UC1136130  Polygonum bidwelliae J. E. Sowder 1933-6-2 79 Butte about 3 mi n Clear Creek; Chico Quadrangle Comment
  UC398664  Polygonum bidwelliae A. A. Heller 1927-5-18 14391 Butte along grade on road from Chico to Paradise; Neale grade Comment
  CHSC32757  Polygonum bolanderi J. D. Jokerst 1981-4-3 1282 Butte Butte Cr. Canyon, ca 1/2 mi E of Centerville at the top of the Penstock of PG and E power plant. 365 Comment
  JEPS98376  Polygonum bolanderi Lowell Ahart 2000-9-27 8694 Butte 13 air miles NE of Oroville (N side of Bean Creek Rd, 1/4 mi SE of Little Bald Rock, 1 1/4 air miles NE of Big Bald Rock, 4 air miles NE of Madrone Lake) 1066 Comment
  CHSC28791  Polygonum californicum J. D. Prouty 1979-5-23 7905233 Butte Open plateau just n of The Skyway ca. 4 mi e of Chico. 170 Comment
  RSA724998  Polygonum lapathifolium L. Ahart 2006-9-11 13289 Butte South edge of the North Fork of the Feather River, north side of highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 air miles northeast of Oroville. 432 Comment
  CHSC113482  Polygonum minimum Lowell Ahart 2014-7-13 19654 Butte About 100 yards south of Philbrook Road, from the large meadow go west to the snow lake, go on about 100 yards to the open logged area, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  SEINET10479655  Polygonum minimum Mary Susan Taylor, Lowell Ahart 1981-8-16 Taylor 4209 Butte T25N R5E ne 1/4 sw 1/4 sec 21. Jones- ville SW quad. N side of 25N04, near upper Big Kimshew Creek, ca. 2 mi SE of Philbrook Reservoir, ca. 6 mi NE of Stirling City. Red Fir Forest. 6400 ft. 1950 Comment
  SEINET10970713  Polygonum parryi Mary Susan Taylor 1980-6-14 Taylor 2875 Butte T21N R6E nw sec 29. Big Bend quad. Little Bald Rock, on granite dome, ca. 4 mi E of Lake Madrone. 1016 Comment
  SEINET10479669  Polygonum persicaria Mary Susan Taylor 1975-10-3 Taylor 924 Butte At bridge over Little Chico Creek on River Road, ca. 10 mi W of Chico; Ripar ian Woodland disturbed area. 37 Comment
  POM220087  Polygonum phytolaccifolium H. F. Copeland 1928-8-29 440 Butte Neighborhood of Jonesville, canyon of Jones Creek. 1829 Comment
  CHSC105684  Polygonum polygaloides subsp. kelloggii Lowell Ahart 2010-9-21 17211 Butte Open meadow-like area, about 70 yards east of the poor dirt road, about 80 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1917 Comment
  UC1563289  Polygonum punctatum Lowell Ahart 1990-10-3 6620 Butte about 1/4 mi ne Canyon Creek Bridge across lake; Lake Oroville, East Fork of Canyon Creek 259 Comment
  SEINET3404075 Image available Polygonum spergulariiforme E. B. Copeland 1931-7-3 632 Butte Jonesville, Colby Canyon 1550 Comment
  CHSC108841  Polypodium calirhiza Lowell Ahart 2012-2-22 17740 Butte On the north side of a large rock, on the east edge of Big Chico Creek, about 100 yards south of the trail crossing the creek, about 100 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. 189 Comment
  CHSC90136  Polypodium calirhiza Jack Judkins 1983-4-16 5 Butte 6 mi east-southeast of Chico, 200 yds south of Butte Creek, 200 yds southeast of the Covered Bridge. 274 Comment
  JEPS115061  Polypodium calirhiza Lowell Ahart 2007-11-3 14549 Butte West of the high water line of Lake Oroville, about 1/2 mile east of the Power House below Kunckle Reservoir, about one mile north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise 322 Comment
  SEINET10929373  Polypodium glycyrrhiza Mary Susan Taylor 1980-4-1 Taylor 2420 Butte Riparian woodland along S side of Butte Creek, about 1/4 mi downstream from Honey Run Covered Bridge about 6 mi E of Chico. 122 Comment
  UC1609044  Polypogon australis Lowell Ahart 1993-7-23 7098 Butte about 6 (air) mi ne Feather Falls (about 100 yards w of the bridge across the Fall River, w side of river); Fall River, ne of Feather Falls 1036 Comment
  CHSC90814  Polypogon interruptus Lowell Ahart 2005-5-2 11779 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 25 Comment
  CAS-BOT-BC233208  Polypogon maritimus Lowell Ahart 1983-6-12 4052 Butte 7 miles SW of Feather Falls. Ca. 1 mile S of Crystal Hill, near Oregon Gulch, near Lake Oroville 425 Comment
  CHSC30551  Polypogon monspeliensis J. D. Jokerst; M. S. Taylor 1980-11-11 636 Butte Adjacent to rice fields. 50 ft N of Goodspeed-Watt Rd, 0.1 mi N of Nelson Rd (ca 6 mi S of Chico). Comment
  CHSC39348  Polypogon monspeliensis Lowell Ahart 1983-6-26 4150 Butte Along the edge of Ponderosa Way, about 1 1/2 miles south-east of the East Fork of Canyon Creek, about 14 1/2 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 575 Comment
  CHSC75341  Polypogon monspeliensis Lowell Ahart 1999-5-21 8070 Butte In a pasture, 50 yards north of Evans Reimer Road, about 7/8 mile east of Pennington Road, about 5 miles (air) southwest of Gridley. 21 Comment
  JEPS88274  Polypogon monspeliensis Vernon H. Oswald and Lowell Ahart 1996-5-27 7663 Butte U.S. Fish & Wildlife Service parcel between 7 Mile Lane & the Sacramento R. Scaramento R. Nat'l Wildlife Refuge (on s. side of levee rd. at s.w. corner of Tract 3.4, Sanctuary II, Llano Seco Unit); , Llano Seco Unit 32 Comment
  SACT002054  Polypogon monspeliensis Herbert Copeland 1923-5-11 Butte Comment
  CHSC29000  Polystichum californicum M. S. Taylor 1980-4-1 2419 Butte Along s side of Butte Creek, ca. 1/4 mi down stream from Honey Run Covered Bridge, ca. 6 mi e of Chico. 121 Comment
  CHSC34677  Polystichum imbricans M. S. Taylor 1980-3-19 2388 Butte Macabes Creek canyon, ca. 100 ft e of Lumpkin Rd, ca. 1.2 mi n of its jct with Forbestown Rd, ca. 10 mi ne of Oroville. 396 Comment
  CHSC39312  Polystichum imbricans Lowell Ahart 1983-6-26 4122 Butte Along Ponderosa Way, about 2 miles south-east of the intersection of the Oroville-Quincy Highway and Ponderosa Way, about 15 miles north-east of Oroville. The sign gives Big Ridge Road not Ponderosa Way. 500 Comment
  CHSC28408  Polystichum imbricans subsp. curtum M. S. Taylor 1979-9-28 2202 Butte Butte county line at Hwy 70, between boundary and Arch Rock tunnel. 487 Comment
  JEPS104593  Polystichum imbricans subsp. imbricans Lowell Ahart 2003-7-30 10459 Butte Along a small stream, on the n side of Little Bald Rock, on the south side of Bean Creek road, ca 2 mi (air) se of Brush Creek. 1000 Comment
  CHSC44151  Polystichum lemmonii V. Oswald; L. Ahart 1988-7-29 3655 Butte Ca. 5 mi (air) se of Jonesville on the ridge running eastwards from the peak of Snow Mtn. 2097 Comment
  CHSC13515  Populus fremontii J. Lee 1974-4-4 4 Butte Found at 484 Panama Ave., Chico. 76 Comment
  JEPS95861  Potamogeton crispus Lowell Ahart 1999-8-22 8189 Butte northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  CHSC8774  Potamogeton gramineus S. Chulasmai 1966-4-15 11 Butte Lanniger Rd. (up to northern Chico). Stream, lake. Comment
  UCR198012  Potamogeton gramineus W. H. Lang 1954-8-12 s.n. Butte Sacramento Valley, Biggs Rice Experimental Station [955 Butte City Hwy(162), 2.5 mi west of Hwy 99] 30 Comment
  CAS-BOT-BC453685  Potamogeton gramineus E. B. Copeland 1930-7-28 406 Butte Above Jonesville 1700 Comment
  CHSC51953  Potamogeton natans L. P. Janeway 1987-6-8 2166 Butte Along French Cr across from mouth of Ram Cr. Pond. 617 Comment
  CHSC99668  Potamogeton pusillus var. tenuissimus R. A. Schlising; A. Kannely 2005-9-16 4463 Butte East of Jonesville and east of Snag Lake; in Summit Lake. Growing totally submerged under about 2 m of water on a muddy ridge on rocky lake bottom. 1889 Comment
  CHSC32133  Potentilla glandulosa L. Ahart 1977-5-22 1391 Butte On banks of North Honcut Creek, Peter Ahart Ranch, Honcut. 50 Comment
  CDA13900  Potentilla glandulosa subsp. glandulosa G. F. Hrusa, T. D. Wilfred 1997-5-8 13757 Butte Sierra Nevada; Little Butte Creek, N of Magalia, above Magalia Res. Immed. E of Holmwood Drive. Comment
  CHSC28731  Proboscidea louisianica M. Banchero; R. Schlising, R. Banchero 1979-9-23 45 Butte SW of Chico, along Ord Ferry Road, 3.7 mi W of jct Ord Ferry and Goodspeed--Watt Roads (= Dayton Four Corners). Comment
  CHSC2416  Prunella vulgaris var. lanceolata R. Carter 1965-6-20 243 Butte Found 4 mi. E of intersection of Lumpkin Rd. and Forbestown Rd. on Forbestown Rd. growing in moist meadow 25' N of road; ca. 14 mi. E of Oroville. 609 Comment
  CHSC25078  Prunella vulgaris var. lanceolata D. Joley 1968-7-9 Butte In Butte Meadows ca 35 mi ne of Chico. Comment
  CHSC82331  Prunus S. Posner 1972-9-23 Butte Garden behind 725 Nord Ave., Chico. Comment
  SEINET10838463  Prunus avium Mary Susan Taylor 1980-4-27 Taylor 2558 Butte T23N R3E nw sec 27. Paradise quad. Along Middle Butte Creek off of Little Butte Creek in Riparian Woodland, very shady, ca. 1.5 mi SE of Nimshew. With J.D. Jokerst. 610 Comment
  RSA595071  Prunus persica var. persica J. T. Howell 1976-7-14 51816 Butte Feather River Canyon Hwy, just E of Jarbo Gap SW of Bucks Lake on road to Oroville. 640 Comment
  CHSC49599  Pseudobahia heermannii Vernon H. Oswald 1990-1-31 4133 Butte Lime Saddle Recreation Area, West Fork of Lake Oroville, near Nelson Bar Rd launch area. Just above high-water level of the lake, just east of the end of the road. 274 Comment
  CHSC90595  Pseudobahia heermannii J. D. Prouty 1980-4-7 80 .42 Butte Bank near bridge at junction of Upper Rocky Honcut Creek and Swedes Flat Road. 350 Comment
  CHSC108317  Pseudognaphalium californicum Lowell Ahart 2011-8-17 17630 Butte About 100 yards west of the table at the old homestead and southwest of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 239 Comment
  CHSC26649  Pseudognaphalium luteoalbum M. S. Taylor 1977-11-10 1511 Butte On s side of Crauch Rd, ca. 300 ft w of its jct with Lone Pine Ave., ca. 4 mi s of Chico. 30 Comment
  JEPS124148  Pseudognaphalium luteoalbum Lowell Ahart 2015-11-7 20629 Butte About 1/8 mile southwest of the parking area at the end of Old Highway Alternate 40, strand of Lake Oroville, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. Comment
  JEPS88522  Pseudognaphalium stramineum Lowell Ahart 1996-6-25 7685 Butte about 1 1/4 mi n and 1/2 mi e Honcut (about 12 mi s of Oroville); Peter Ahart Ranch 36 Comment
  CHSC28697  Pseudognaphalium thermale M. S. Taylor 1979-9-9 1924 Butte Inskip on the Skyway. 1467 Comment
  CHSC33644  Pseudognaphalium thermale M. Merryman; R. Banchero 1979-9-2 25 Butte Ca. 6 mi ne of Forest Ranch on Hwy 32. Roadside fill. 950 Comment
  UC600629  Pseudostellaria jamesiana H. F. Copeland 1931-6-10 1526 Butte between Jones and Willow Creeks (Jonesville); between Jones and Willow Creeks 1524 Comment
  CHSC32154  Pseudotsuga menziesii var. menziesii L. Ahart 1975-4-1 736 Butte Along edge of rd; ca. 2 mi s of Ponderosa Dam. 396 Comment
  SBBG126085  Pseudotsuga menziesii var. menziesii L. Ahart 2012-2-22 17737 Butte E edge of Big Chico Crk, ca. 100 yards S of trail crossing the crk, ca. 100 yards W of Ten Mi House Rd, ca. 0.75 mi W of Hwy 32, ca. 9 mi (air) NE of Chico 189 Comment
  RSA4451  Psilocarphus tenellus var. tenellus E. B. Copeland 1931-7-20 698 Butte Jonesville, near Butte Creek House. 1700 Comment
  UC109313  Ptelea crenulata R. M. Austin May 1883 263 Butte Comment
  JEPS110226  Pteridium aquilinum var. pubescens Lowell Ahart 2006-4-28 12545 Butte South of the dirt road and south of a small stream, a part of the drainage into Beatson Hollow, about 3/4 mile northwest of the Iron Gate along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 318 Comment
  CHSC61331  Pyrola aphylla Lowell Ahart 1993-7-22 7077 Butte On the west side of the dirt road, near Fall River, about 1/4 mile north-west of the bridge across Fall River, about 6 miles (air) north-east of Feather Falls. 1036 Comment
  CAS-BOT-BC460581  Pyrola aphylla Lowell Ahart 1985-6-17 5052 Butte Along dirt road on Fields Ridge, 4 miles SE of Feather Falls 792 Comment
  CHSC4669  Pyrola picta Renee Carter 1966-6-15 441 Butte 1.5 mi. S of Brush Creek along E side of Bald Rock Rd., ca. 5 yds off road. 1097 Comment
  UC474256  Pyrola picta H. F. Copeland 1930-8-26 Butte Jonesville, woods above hotel Jonesville Comment
  UC474257  Pyrola picta E. B. Copeland 1930-7-21 Butte Jonesville Comment
  CHSC108797  Pyrus communis Lowell Ahart 2012-4-9 17822 Butte About 20 yards east of Big Chico Creek, south part of Upper Bidwell Park, about 1/2 mile east of the power lines, about 1 1/2 miles (air) northeast of Chico. 96 Comment
  CAS-BOT-BC104152  Quercus X morehus John Thomas Howell 1961-9-22 36747 Butte Feather River Highway 3 miles from Oroville Comment
  CAS-BOT-BC62686  Quercus chrysolepis Lowell Ahart 1980-9-10 2620 Butte Little Bald Rock 1100 Comment
  CAS-BOT-BC62687  Quercus chrysolepis Lowell Ahart 1981-7-7 2918 Butte About 0.5 mile west of the Oroville Forbestown Road on the Black Bart Road, west of Forbestown 700 Comment
  CHSC33292  Quercus chrysolepis S. Posner; K. Stern 1972-10-12 3 Butte Bidwell Park, south bank of Big Chico Creek, facing golf course, near firing range. Comment
  CHSC3565  Quercus chrysolepis R. D. Briggs 1966-2-20 21 Butte Three miles due south of Feather Falls. Comment
  UC1135411  Quercus chrysolepis J. E. Sowder 1933-8-4 122 Butte slope above de Sable Power House; Chico Quad. 609 Comment
  UCR237301  Quercus douglasii George K. Helmkamp, E. A. Helmkamp 2012-4-14 18758 Butte Northwestern Sacramento Valley, Cox Lane, 1.3 miles west of its intersection with La Loma Way, c. 10.3 mi. ENE (82 deg. ) of Gridley 91 Comment
  CAS-BOT-BC86119  Quercus dumosa P. C. Everett; E. K. Balls 1959-10-20 23907 Butte 8.6 miles NE from Chico along State Hwy. 32, toward De Sabla 487 Comment
  SEINET10447141  Quercus dumosa Melvin L. Conrad, David B. Dunn; Douglas G. LeDoux 1973-6-5 Conrad 7021 Butte 2/6 miles w of paradise on chico road. 610 Comment
  SEINET10477873  Quercus dumosa Mary Susan Taylor Taylor 995 Butte Bidwell Park, Chico. Comment
  UC1135634  Quercus garryana var. breweri C. G. Albertus 1933-7-1 39 Butte sw slope Promontory Pk.; Chico Quad. 1005 Comment
  UC463022  Quercus kelloggii E. B. Copeland 1931-7-27 Butte Jonesville 1600 Comment
  UCD46735  Quercus kelloggii Leonard H. Day 1948-7-11 s.n. Butte Lava Top, Butte County, ca. 1 mile south of Cascade (Plumas County), California. 1435 Comment
  SEINET10431579  Quercus kelloggii M. J. Williams 1967-4-22 s.n. Butte Near Feather Falls. 457 Comment
  JEPS57370  Quercus lobata L. R. Heckard 1968-5-31 1932 Butte Bidwell Park Chico Comment
  CHSC100469  Quercus robur Lowell Ahart; John Dittes 2008-11-14 15453 Butte In the south part of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC3338  Quercus suber Robert L. Smith 1966-3-1 36 Butte U.S. Plant Introduction Station 5 miles S.E. of Chico. Comment
  CHSC43677  Quercus vacciniifolia Vernon Oswald 1983-7-19 880 Butte Philbrook Rd. 1.3 mi w of the road to High Lakes. 1676 Comment
  UC1135809  Quercus vacciniifolia P. L. Johannsen 1936-7-21 961 Butte 1.5 mi ese Chaparral House; Lassen National Forest, Paynes Creek Quad. 1645 Comment
  CHSC52462  Ranunculus aquatilis var. subrigidus Kirsten Tarp 1983-8-6 340 Butte E of Butte Meadows; in stream. 1341 Comment
  CHSC4663  Ranunculus arvensis R. Carter 1966-4-11 345 Butte Found ca. 7 mi. E of Oroville at 6120 Woodleaf St. Rt., 300 yds. W off Feathervale, 15 yds. W off Feathervale, 15 yds. W of house; in orchard. 243 Comment
  CAS-BOT-BC378956  Ranunculus bonariensis Lowell Ahart 1979-5-20 s.n. Butte 2 mi south of Palermo 35 Comment
  CHSC45400  Ranunculus bonariensis var. trisepalus Lowell Ahart 1978-4-21 1659 Butte In a vernal pool, Peter Ahart Ranch, about 1 mile north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  JEPS123888  Ranunculus bonariensis var. trisepalus Lowell Ahart 2015-5-5 20138 Butte About 400 yards south of Larkin Road Boat Lunch Area, near the Thermalito Afterbay, about 1 miles southwest of the Oroville Airport, about 6 miles (air) southwest of Oroville Comment
  JEPS127009  Ranunculus bonariensis var. trisepalus Lowell Ahart 2016-5-24 20866 Butte About 100 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. Comment
  CHSC52948  Ranunculus canus Vernon Oswald 1983-2-14 73 Butte Upper Bidwell Park, Chico, on the s side of Upper Park Rd. about 0.7 mi e of the power lines. 115 Comment
  RSA754585  Ranunculus hebecarpus L. Ahart 2009-4-22 15592 Butte W side of Guardians Trail, about 100 yards N of Pine Trail, Upper Bidwell Park, W of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 382 Comment
  CHSC10720  Ranunculus muricatus Lowell Ahart 1966-5-7 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC118056  Ranunculus muricatus Daphne K. Christopher; Hannah Stevens, Lowell Ahart 2003-4-21 228 Butte Off Hwy 99. Ahart Family Ranch along boundary on access road and edge of field. 41 Comment
  CHSC23135  Ranunculus occidentalis var. occidentalis M. S. Taylor 1976-2-17 996 Butte Ca. 10 ft s of Big Chico Creek, opposite Chico Municipal Golf Course, Upper Bidwell Park, Chico. 91 Comment
  CHSC41519  Ranunculus occidentalis var. ultramontanus Kirsten Tarp 1983-8-6 341 Butte E of Butte Meadows, near creek. 1341 Comment
  CHSC52826  Ranunculus occidentalis var. ultramontanus Kirsten Tarp 1982-6-27 190 Butte SW part of county, near Sly Creek Reservoir. 1127 Comment
  CHSC46484  Raphanus raphanistrum Lowell Ahart 1977-5-22 1393 Butte Pasture field, Peter Ahart Ranch, about 2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC82391  Rhamnus californica subsp. californica Lowell Ahart 2002-6-2 9679 Butte Meadow, south of the intersection of Black Bart Road and Forbestown Road, about 3 miles (air) southwest of Forbestown. 670 Comment
  SEINET10493592  Rhamnus californica subsp. tomentella Mary Susan Taylor 1981-7-10 Taylor 4066 Butte T22N R5E ne sec 6, Pulga quad. N side of Feather River Hwy 70 at Pulga bridge, on large serpentine outcrop, ca. 20 mi NE of Oroville. 1600 ft elev. 488 Comment
  RSA719541  Rhamnus rubra Michael A. Vincent, K. Levings 2006-7-29 12885 Butte NE of Chico along Rt. 32. Comment
  CHSC33791  Rhamnus tomentella subsp. tomentella M. S. Taylor 1981-7-10 4066 Butte North side of Feather River Hwy 70 at Pulga Bridge, on large serpentine outcrop, ca. 20 mi ne of Oroville. 487 Comment
  CHSC39674  Rhamnus tomentella subsp. tomentella Lowell Ahart 1983-6-21 4100 Butte Along the edge of Bloomer Hill Road, about 3 miles north-west of the Oroville-Quincy Highway, about 16 miles north-east of Oroville. Section 30. 700 Comment
  RSA107816  Rhamnus tomentella subsp. tomentella L. S. Rose 55097 Butte Magalia 732 Comment
  CHSC5979  Rhaphiolepis indica M. MacArthur 1968-6-12 140 Butte Just outside NW side of Biology Stockroom in LS bldl, along paved path, Chico State College campus. 60 Comment
  CDA14158  Rhododendron occidentale G. F. Hrusa 1997-6-27 13914 Butte Sierra Nevada; Banks of Fall River (not Shasta Co. Fall R.) at old Fall River Campground on USFS 24N94. Comment
  CHSC44065  Rhynchospora californica L. P. Janeway 1988-5-30 2714 Butte Cyn of Big Chico Cr; upper Bidwell Park, 3.7 mi along Upper Park Rd from Wildwood Ave. Seep above Salmon Hole. 161 Comment
  CHSC11905  Ribes nevadense E. B. Copeland 1931-7-31 647 Butte Damp spots in woods near Butte Creek. 1550 Comment
  CHSC1659  Ribes nevadense L. Stone 1930-3-10 Butte Big Chico Creek Canyon near Forest Ranch. 548 Comment
  SBBG29145  Ribes nevadense E. B. Copeland 1931-7-31 Butte near Butte Crk, Jonesville 1550 Comment
  CHSC20051  Ribes roezlii M. S. Taylor 1975-4-25 496 Butte Abundant along dirt rd, ca. 1/4 mi e of Cohasset Hwy, ca. 10 mi n of Chico. Comment
  UC600616  Ribes roezlii E. B. Copeland July, 1930 Butte Jonesville 1600 Comment
  CAS-BOT-BC198957  Ribes roezlii var. roezlii H. F. Copeland 1929-6-11 1237 Butte Jonesville 1524 Comment
  CHSC104012  Ribes roezlii var. roezlii Lowell Ahart 2010-6-12 16790 Butte On the south side of Ten Mile House Road, about 1/4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. 376 Comment
  CHSC109063  Ribes roezlii var. roezlii Lowell Ahart 2012-4-30 17922 Butte On the southwest side of Ten Mile House Road, about 1/4 mile west of Highway 32, about 9 miles (air) northeast of Chico, south part of Upper Bidwell Park. 392 Comment
  HSC65653  Ribes roezlii var. roezlii J. P. Smith, J. O. Sawyer 1973-4-14 6060 Butte Cohasset Comment
  UC600617 Image available Ribes viscosissimum H. F. Copeland 1931-6-11 Butte Kirby Meadows Jonesville Comment
  CHSC31812  Robinia pseudoacacia L. Ahart 1975-5-3 748 Butte Peter Ahart Ranch, Honcut. 45 Comment
  JEPS119786  Robinia pseudoacacia Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18002 Butte South of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC74455  Rorippa curvisiliqua Lowell Ahart 1977-7-10 s.n. Butte 1 mile west of Honcut. 35 Comment
  CHSC51253  Rorippa curvisiliqua var. occidentalis Lowell Ahart 1990-10-3 6612 Butte On the bottom of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/8 mile north-east of the Canyon Creek Bridge across Lake Oroville. 243 Comment
  CHSC80517  Rorippa curvisiliqua var. occidentalis Lowell Ahart 2001-4-27 8732 Butte On the south side of a road levee, just north of the bridge across Wyandotte Creek, north of Lower Honcut road, about 100 yards west of the Railroad, about 1 1/4 mile east of Highway 70, about 1 3/4 miles west of Honcut, about 14 miles (air) south of Oroville. 26 Comment
  CHSC112733  Rorippa curvisiliqua var. orientalis Lowell Ahart 2013-11-17 19260 Butte Along the sides of McCabe Creek, below the high water line of Lake Oroville, about 5/8 mile southwest of the Enterprise Bridge across Lake Oroville. 245 Comment
  CHSC36688  Rorippa curvisiliqua var. orientalis R. E. Preston 1982-7-16 342 Butte Near small stream; ca. 1/2 mi sw of Crane Valley. 1554 Comment
  CHSC35645  Rorippa palustris var. occidentalis R. E. Preston 1982-4-7 229 Butte Western Canal, at jct with the Midway ca. 0.75 mi s of Nelson. 35 Comment
  CDA26269  Rosa californica L. Ahart 2002-6-2 9680 Butte On the north side of Black Bart Road, about 1 1/2 miles east of the intersection of Forbestown Road and Black Bart Road, about 12 miles (air) southeast of Oroville. Comment
  CAS-BOT-BC148125  Rosa gymnocarpa Helen M. Edwards 1917-6-1 s.n. Butte DeSabla Comment
  CHSC30739  Rosa gymnocarpa M. S. Taylor 1980-5-27 2732 Butte On n side of Bald Rock Rd, ca. 0.5 mi e of its jct with Oroville-Quincy Hwy, ca. 0.5 mi s of Lake Madrone. 701 Comment
  CHSC102409  Rosa pisocarpa subsp. ahartii Lowell Ahart 2009-6-19 15921 Butte On dry soil, on the east side of Big Chico Creek, southwest of the meadow, about 30 ayrds west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 209 Comment
  CHSC1590  Rosa pisocarpa subsp. ahartii A. Goekler 1928-5-25 Butte Bidwell Park. 121 Comment
  OBI72023  Rosa pisocarpa subsp. ahartii Barbara Ertter, Lowell Ahart 2007-6-23 19074 Butte Black Bart Rd 1.3 mi from lower jctn with Forbestown Rd, ca 10 airmiles ESE of Oroville, 39 deg. 29.060'N 121 deg. 21.634'w 655 Comment
  UC1862496  Rosa pisocarpa subsp. ahartii Barbara Ertter with Lowell Ahart 2006-8-1 18750 Butte Black Bart Road 1.3 mi from lower junction with Forbestown Road, ca 10 airmiles ESE of Oroville 655 Comment
  CAS-BOT-BC148253  Rosa woodsii var. ultramontana A. A. Heller 1928-7-10 14654 Butte Wet meadows at Butte Meadow in the yellow pine belt. Comment
  CAS-BOT-BC274227  Rostraria cristata Lowell Ahart 1982-4-29 3386 Butte Near the sign in station, Gray Lodge, about 12 miles south-west of Gridley 35 Comment
  UCD92292  Rostraria cristata A. A. Heller 1914-5-19 11417 Butte Butte County. Comment
  CHSC41998  Rotala ramosior Lowell Ahart 1974-8-2 576 Butte On the sides of a ditch, along Goodspeed Watt Road, near Richvale. 30 Comment
  UCD19370  Rotala ramosior E. Dean; with J. Ditomaso and E. Healy 2001-8-20 861 Butte Biggs UC Field Station. North of town of Biggs, W of jct of Hwys 99 and 162. Just S of main research buildings at field station, W of RR tracks and ca. 2 east-west running dirt roads S of buildings. Along east-west running dirt road. 30 Comment
  CHSC52472  Rubus armeniacus L. P. Janeway 1987-5-20 2061 Butte Near Gold Flat, Hodap Cr, jct of Lunt Rd and Nelson Bar Rd. Creek bottom. 457 Comment
  SEINET10483860  Rubus armeniacus Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4716 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  SEINET10970325  Rubus glaucifolius Mary Susan Taylor 1981-4-28 Taylor 3570 Butte T23N R5E sw sec 32 to T22N R5E ne sec 5 Pulga SW quad. Along Four Trees Rd, ca. 0.5 to 1 mi E of Hwy 70, ca. 2-3 mi NE of Pulga. Yellow Pine Forest; 2200-2400 ft. 670 Comment
  POM91428  Rubus macropetalus C. C. Bruce 1897-05 1793 Butte Big Chico. Comment
  CHSC65688  Rubus ursinus Vernon H. Oswald 1996-3-22 7253 Butte Sacramento Valley. Sacramento River National Wildlife Refuge, Llano Seco Unit. Sanctuary 1, SE corner of Tract 1, on the edge of a branch of Angel Slough. 30 Comment
  UCD89071  Rubus ursinus Lindsay Clark 2008-5-30 BWP 22 Butte Bidwell Park in Chico, along Yahi trail between parking lots G and H (Alligator Hole and Day Camp). 89 Comment
  CHSC29736  Rumex crispus J. D. Jokerst 1980-4-21 628 Butte Top of North Table Mt., N of Cherokee Rd. Occasional along edges of vernal stream courses. 381 Comment
  CHSC36510  Rumex crispus L. Ahart 1982-5-29 3451 Butte In a farmed field, near the Peter Ahart Ranch, ca. 2.5 mi n and 1 1/4 mi e of Honcut. 50 Comment
  CAS-BOT-BC421620  Rumex crispus Lowell Ahart 1981-5-16 2810 Butte Gray Lodge, 11 miles southwest of Gridley. Duck ponds on Gray Lodge Waterfowl Management Area. 35 Comment
  CAS-BOT-BC433477  Rumex dentatus M. S. Taylor 1982-5-22 4504 Butte Graylodge [Gray Lodge] Waterfowl Refuge, in vicinity of parking lot 6, on Rutherford Rd, ca. 1/2 mi e of its jct with Pennington Rd, ca. 12 mi sw of Gridley. 21 Comment
  UCD150347  Rumex persicarioides Harry A. George 1971-7-17 s.n. Butte Gray Lodge Wildlife Management Area, Field 14. Comment
  CAS-BOT-BC434168  Rumex triangulivalvis Lowell Ahart 1984-6-8 4675 Butte About 1 mile east of the Ponderosa Dam, about 2 miles north of Forbestown 475 Comment
  CAS-BOT-BC123629  Rupertia hallii Harvey Monroe Hall 1914-7-31 9825 Butte Humboldt Road 1066 Comment
  CHSC50030  Sagina decumbens subsp. occidentalis Lowell Ahart 1990-4-15 6459 Butte Below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/8 mile north-west of the Enterprise Bridge across Lake Oroville. 289 Comment
  JEPS114955  Sagina decumbens subsp. occidentalis Lowell Ahart 2008-5-12 14732 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 40 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam 258 Comment
  CAS-BOT-BC102800  Salix boothii E. B. Copeland 1931-6-11 623 Butte Jonesville, Kirby's Meadow 1750 Comment
  CAS-BOT-BC107963  Salix geyeriana H. F. Copeland 1931-6-11 1546 Butte Kirby Meadows, Jonesville 1828 Comment
  RSA4403  Salix geyeriana var. argentea E. B. Copeland 1931-6-10 618 Butte Jonesville, Butte Creek. 1500 Comment
  CAS-BOT-BC107835  Salix gooddingii J. T. Howell 1959-9-20 34657 Butte Lower foothills, eastern outskirts of Oroville - Sierra Nevada 60 Comment
  UC176210  Salix laevigata A. A. Heller 1913-4-4 10694 Butte levee at Oroville Comment
  JEPS119530  Salix lasiolepis Lowell Ahart 2012-4-20 17887 Butte On the east side of Big Chico Creek, about 20 yards west of the trail, about 200 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles northeast of Chico, south part of Upper Bidwell Park. Comment
  JEPS119887  Salix lasiolepis Lowell Ahart 2012-6-5 18169 Butte North of Beatson Hollow, about 1 3/4 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. Comment
  CAS-BOT-BC129585  Salix lasiolepis var. lasiolepis A. A. Heller 1915-4-20 11858 Butte In the digger pine and oak belt, 7 miles below Centerville in the Sierra foothills, where it is locally plentiful on the banks of Butte Creek. 76 Comment
  UC446429  Salix ligulifolia E. B. Copeland 1931-6-10 Butte below <Copeland> house between Copeland meadows Jonesville (above lower meadow) 1500 Comment
  CHSC60851  Salix lucida subsp. lasiandra Vernon H. Oswald; Lowell Ahart 1993-6-22 5561 Butte In Long Ravine W of Stirling City, where Hendricks Canal tunnel dumps into the creek. 975 Comment
  SBBG29040  Salix lucida subsp. lasiandra E. B. Copeland 1931-6-10 Butte Jonesville 1500 Comment
  CHSC42544  Salix melanopsis Lowell Ahart 1987-5-6 5539 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 274 Comment
  UC446423  Salix melanopsis E. B. Copeland 1931-6-20 Butte across Butte Creek Jonesville 1500 Comment
  CHSC110041  Salsola tragus Lowell Ahart 2012-10-28 18517 Butte East edge of Highway 70, about 1/4 mile south of Cottonwood Road, about 3 miles north of Oroville. 90 Comment
  CHSC48497  Salvia sonomensis Vernon Oswald 1985-4-5 1703 Butte Cohasset Hwy 1.9 mi w of Villas Rd. 579 Comment
  UC102282  Sambucus mexicana Mrs. R. M. Austin 1896-7 612 Butte Colby Comment
  CAS-BOT-BC235067  Sambucus racemosa var. racemosa E. B. Copeland 1930-7-12 s.n. Butte Above Jonesville 2100 Comment
  CHSC51994  Sanicula bipinnatifida Patty L. Venable 1978-4-21 4 Butte 6 mi n of Oroville, 1 1/2 mi 2 of Cherokee Road. 304 Comment
  UCD72989  Sanicula bipinnatifida Ayzik Solomeshch 2003-4-9 s.n. Butte Wurlitzer Reserve, about 10 mi. north from Chico on Hwy 99, west side of the road. Comment
  CHSC1981  Sanicula bipinnatifida var. flava P. Delaplane 1965-5-4 59 Butte At E end of Lake Concow on Concow Road. 1219 Comment
  CHSC32662  Sanicula tuberosa M. S. Taylor; L. Hanson 1981-3-16 3414 A Butte Embankment, e side of Truex Rd, ca. 1/2 mi s of its jct with Hwy 70, ca. 7 mi n of Oroville. 304 Comment
  CHSC56743  Sanicula tuberosa J. Monelo 1990-4-16 2 Butte Butte Meadows; Humboldt Rd ca 1.9 mi from Hwy 32 n facing rock outcropping ca 100 ft nw of Humboldt Rd. 1341 Comment
  CHSC65441  Sanicula tuberosa L. P. Janeway 1995-5-18 4763 Butte Jackson Ranch Ridge, between Fall River and Frey Creek. 1106 Comment
  SEINET10454589  Sanicula tuberosa Mary Susan Taylor 1979-3-20 Taylor 1938 Butte T21N R4E nw1/4 sec. 21. Cherokee Quad. Along old road on N side of Hwy 70 following West Branch of the Feather River, which begins at S side of bridge over N fork of Feather River, ca. 10 mi N of Oroville; limestone outcrops within Foothill Woodland. 305 Comment
  UC436291  Sarcodes sanguinea E. B. Copeland Jul 1930 Butte Jonesville 1550 Comment
  CHSC34224  Scandix pecten-veneris M. S. Taylor 1981-5-1 3589 Butte E side of Hwy 70, ca. 4 air mi nw of Oroville. 91 Comment
  CHSC40633  Scandix pecten-veneris Lowell Ahart 1985-4-1 4875 Butte Along Table Mountain Boulevard, near the Cambell Overflow, a little south of the intersection of Highway 70 and 149, about 7 miles north of Oroville. 30 Comment
  CHSC65885  Scandix pecten-veneris Vernon H. Oswald 1996-4-20 7409 Butte Sacramento National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. In the SE corner of Tract 5, Sanctuary II. Sacramento Valley. 32 Comment
  CHSC96216  Scandix pecten-veneris R. Fischer 2006-6-4 982 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east -side addition along Hwy. 32. Plants growing along Guardian Trail and 1/4 south of the Pine Trail junction, adjacent a seasonal stream. 381 Comment
  CHSC39358  Sceptridium multifidum L. Ahart; P. Ahart 1983-9-21 4462 Butte Along French Creek, ca. 3 mi n of the Sly Creek Dam, n of Strawberry Valley. 900 Comment
  CHSC102597  Schedonorus arundinaceus L. P. Janeway; B. Castro 2009-7-4 9840 Butte Northern High Sierra Nevada. Along Four Trees Road 3.4 road km east of Coyote Gap; at head of minor drainage into Clear Creek, head of French Creek Basin. 1469 Comment
  CHSC68457  Schoenoplectus acutus var. occidentalis L. P. Janeway 1987-7-10 2485 Butte West side of Hwy 99 about 1/2 mi north of Cottonwood Road. 41 Comment
  CAS-BOT-BC111652  Schoenoplectus mucronatus L. P. Janeway 1988-6-29 2906 Butte Spring where Crouch Ravine fades into Coon Ridge, 1/4 mi south of Skyway, 170 Comment
  UCD49963  Schoenoplectus mucronatus Carl M. Wick 1983-6-1 s.n. Butte CA. Butte Co. 2 1/2 mis. n. of the Richvale Hwy, on Erickson Rd. Comment
  POM277045  Schoenoplectus mucronatus M. K. Bellue 1947-8-28 s.n. Butte Afton Road, northeast of Biggs Comment
  CAS-BOT-BC22404  Scirpus congdonii L. P. Janeway; Robert A. Schlising 1988-7-16 3033 Butte Large meadow at headwaters of Willow Creek; Jonesville quad (15') 1935 Comment
  CHSC56794  Scirpus congdonii L. P. Janeway; R. A. Schlising 1988-7-22 3066 Butte Upper canyon of Philbrook Creek, 0.7 mi west of the pass. 1889 Comment
  CAS-BOT-BC22403  Scirpus congdonii L. P. Janeway; Robert A. Schlising 1988-7-22 3066 Butte Upper canyon of Philbrook Creek, 0.7 mi west of the pass, Jonesville quad (15') 1889 Comment
  CHSC28549  Scirpus diffusus M. S. Taylor 1979-7-18 1722 Butte On n side of Butte Creek, ca. 1/8 mi w of Road Island jct, at jct of Butte Creek and Old Humboldt Rd, ca. 1 mi w of Cherry Hill Campground, sw of Jonesville. 1524 Comment
  CHSC38913  Scirpus diffusus Vernon Oswald 1983-5-23 548 Butte Upper Bidwell Park, Chico, on the n bank of Chico Creek e of Brown's Hole. 201 Comment
  CHSC61512  Scirpus microcarpus Lowell Ahart 1993-7-6 7053 Butte A small meadow, on the north side of the dirt road, about 1/4 mile west of the Lost Creek Reservoir. 1036 Comment
  CHSC94357  Scirpus microcarpus Lowell Ahart 2006-7-25 13061 Butte In the west part of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  CDA39129  Scirpus mucronatus Margaret Bellue Aug 1947 s.n. Butte Afton Road, near Biggs. 0 Comment
  CHSC62543  Scleranthus annuus subsp. annuus L. P. Janeway 1993-5-2 4343 Butte Along Dark Canyon Road 1.0 mi south of Big Bend Road. Roadside. 502 Comment
  JEPS94138  Scleranthus annuus subsp. annuus Lowell Ahart 1998-6-9 7981 Butte ca. 7 mi. (air) n. Oroville (on the w. side of Cherokee Rd., ca. 50 ft s. of the cow chute, North Table Mt.); North Table Mt. 403 Comment
  CHSC29091  Scribneria bolanderi M. S. Taylor; J. D. Jokerst 1980-5-15 2633 Butte On Cohasset Ridge, ca. 1/4 mi e of Cohasset Rd, ca. 9 mi ne of Chico. 396 Comment
  JEPS98455  Scribneria bolanderi Lowell Ahart 2000-6-4 8442 Butte 3 1/2 air miles SW of Forbestown (the small meadow S of int of Black Bart Road and Forbestown Road) 731 Comment
  CHSC38481  Scutellaria californica Vernon Oswald 1983-5-23 535 Butte Upper Bidwell Park, Chico, beside Yahi Trail w of Brown's Hole. 195 Comment
  CHSC794  Scutellaria californica V. Holt 1931-3-6 Butte Forest Ranch. 548 Comment
  CHSC107265  Scutellaria siphocampyloides L. P. Janeway 2011-6-27 10402 Butte Northern High Sierra Nevada. East slope of Bloomer Hill, 850 m east-southeast of the top. 721 Comment
  CHSC11050  Scutellaria siphocampyloides Lowell Ahart 1968-6-6 Butte Near Swede's Flat Road. 121 Comment
  CHSC23467  Sedella pumila J. R. Lee 1974-4-22 3 Butte 15 yards n of the Skyway roadside ca. 6 mi se of the Chico city limits. 152 Comment
  CHSC71111  Sedella pumila Jan Monelo 1989-4-11 5 Butte Ca 50 yds e of Covered Bridge, ca 7 mi e of Chico. 121 Comment
  CHSC84128  Sedella pumila Lowell Ahart 2003-4-10 10082 Butte Near the easat side of the 'sunken area,' about 150 yards west of the east rim of South Table Mountain, about 2 1/2 miles (air) north of Oroville. 320 Comment
  SFV8763  Sedella pumila J. Lowe 1967-5-20 42 Butte Paradise Point. 1220 Comment
  SEINET10874358  Sedum stenopetalum subsp. radiatum Mary Susan Taylor, L. Hanson 1981-4-2 Taylor 3474 Butte T23N R4E sw sec 30; Paradise SE quad. E side of Coutelenc Rd, n side of spur rd just n of RR overpass and the Skyway, ca. 1/4 mi n of Magalia. Serpentine outcrop; 2300 ft. 701 Comment
  CHSC28532  Selaginella wallacei M. S. Taylor; J. D. Jokerst, L. Ahart 1979-11-15 2289 Butte North Honcut Creek, Peter Ahart Ranch, Honcut. 45 Comment
  CHSC96822  Selaginella wallacei Lowell Ahart 2007-5-29 13930 Butte On the east side of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 3/4 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 585 Comment
  HSC72949  Selaginella wallacei M. S. Taylor 1980-9-27 3345 Butte S side of Hwy. 70 at Butte-Plumas Co. line 549 Comment
  HSC85729  Selaginella wallacei L. P. Janeway 1984-10-20 1187 Butte On outcrop spur ridge making 'Crooked Bar' of the middle fork of the Feather River, near Milsap Bar 579 Comment
  SEINET10471204  Selaginella wallacei Lawrence P. Janeway 1984-9-29 Janeway 1176 Butte Brush Creek Quad, T21N R6E NW 1/4 of sec. 35, 1850 feet. Near Feather Falls overlook on Fall River (a tributary to Middle Fork Feather River). "Feather Falls Scenic Area". On N-facing rock faces (granite), partially shaded, with mosses. 565 Comment
  CAS-BOT-BC363993  Senecio integerrimus var. major A. A. Heller 1915-6-11 11967 Butte Chico Meadows in the Sierra Nevada 1219 Comment
  RSA473101  Senecio triangularis M. B. Dunkle 1945-8-4 9270 Butte Paradise Lake. Marble Mts. Klamath National Forest. 1829 Comment
  CHSC4118  Senecio vulgaris R. Carter 1966-4-2 325 Butte Found ca. 7 mi. E of Oroville at 6120 Woodleaf St. Rt.; 300 yds. off Feathervale, behind house, in pasture. 243 Comment
  CAS-BOT-BC364545  Senecio vulgaris Lowell Ahart 1980-5-4 2155 Butte Thermalito 65 Comment
  CHSC114685  Setaria parviflora G. F. Hrusa; S. Dubiel 2012-9-9 18505 Butte Sierra Nevada. Banks of Feather River, 2 miles downstrream from Thermalito afterbay. 30 Comment
  CHSC78228  Setaria parviflora Lowell Ahart 2000-5-17 8365 Butte Near the south margin of the Thermalito Afterbay, north of the poor dirt road, about 1/10 mile north of the Richville Highway, about 1/2 mle east of Highway 99, about 7 1/2 miles (air) west of Oroville. 42 Comment
  CHSC38855  Setaria pumila Vernon Oswald 1983-7-8 840 Butte Upper Bidwell Park, Chico, in the bed of Lindo Channel near the flood-control weir. 79 Comment
  UC1100459  Setaria pumila Herbert L. Mason and Verne Grant 1946-9-27 13131 Butte Pennington-Gridley Rd. Butte Sink Comment
  SEINET10609515  Setaria pumila Lowell Ahart 1995-8-19 Ahart 7615 Butte T17N, R4E, south-east 1/4 Section 11. Normal size plants, on dry sandy soil, east side of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles south-east of Oroville. Foothill Woodland. 37 Comment
  CHSC109684  Setaria pumila subsp. pumila Lowell Ahart 2012-6-28 18229 Butte At the entrance to Lower Bidwell Park, north of Woodland Avenue, Chico. 61 Comment
  CHSC28637  Sherardia arvensis M. S. Taylor 1979-3-31 1975 Butte Jct of Pentz-Magalia Rd, and Pentz Rd, ca. 1/4 mi W of Hwy 70, SE corner, ca. 22 mi N of Oroville. 198 Comment
  JEPS103295  Sherardia arvensis Lowell Ahart 2002-5-7 9643 Butte High banks of a pond, at the beginning of a SE branch of Schirmer Ravine, ca 50 yards E of the pond on the E side of Cherokee Road, North Table Mountain, ca 4 miles (air) N of Oroville. 228 Comment
  SEINET10448357  Sibara virginica Lowell Ahart 1985-4-1 Ahart 4871 A Butte On damp bare soil along Wyandotte Creek and Central House Road, north-west of Honcut, about 12 miles south of Oroville. Comment
  SEINET10483281  Sibbaldia procumbens Mary Susan Taylor 1979-7-21 Taylor 2161 Butte Humboldt Peak, at Humboldt Summit, tallest point in the county, on Butte- Tehama County line. 2155 Comment
  UC1013144  Sidalcea asprella C. L. Hitchcock 1952-5-28 19538 Butte 1/4 mi e Forbestown Comment
  CHSC34962  Sidalcea calycosa M. J. Lavelle; R. Schlising 1975-10-4 8 Butte Small population in field at NE corner of East Avenue and Mariposa Avenue in Chico. 60 Comment
  CHSC101826  Sidalcea calycosa subsp. calycosa Lowell Ahart 2009-5-23 15764 Butte Along a small drainage, on the west side of Guardians Trail, just northwest of Pine Trail, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC116734  Sidalcea diploscypha Lowell Ahart 2016-5-24 20845 Butte 50 yards north of the ditch, about 200 yards west of Loma Rica Road, about 250 yards southwest of the intersection of Loma Rica Road and La Porte Road, about 3 1/2 miles (air) northeast of Honcut. Grassy area in Foothill Woodland. 50 Comment
  CHSC26820  Sidalcea diploscypha M. S. Taylor 1978-5-7 1617 Butte Scattered around Richvale vernal pools, ca. 20 mi s of Chico, on w side of Hwy 99. 30 Comment
  UC1586587  Sidalcea diploscypha Vernon H. Oswald and Lowell Ahart 1991-5-31 4635 Butte on the sw side Glen Pond (Dan Beebe Trail in the Lake Oroville State Recreation Area, on the s side of Thermalito Diversion Pool); Lake Oroville State Recreation ARea, sw side Glen Pond Comment
  UC600531  Sidalcea glaucescens E. B. Copeland 1929-7-22 Butte Jonesville 1550 Comment
  POM84689  Sidalcea hartwegii C. C. Bruce 1898-05 2389 Butte No location given Comment
  JEPS107752  Sidalcea hirsuta Lowell Ahart 2005-5-11 11792 Butte In deeper vernal pools, south part of North Table Mountain, about 200 yards northwest of the poor dirt road off of Cherokee Road, about 200 yards south of the rim into Beatson Hollow, about 7 miles (air) north of Oroville 358 Comment
  SBBG71471  Sidalcea hirsuta A. A. Heller 1926-5-8 13937 Butte 9 mi N of Chico Comment
  SEINET10838742  Sidalcea hirsuta Mary Susan Taylor 1978-5-7 Taylor 1617 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  CHSC34951  Sidalcea oregana subsp. spicata R. A. Schlising; R. Banchero 1980-7-14 3900 Butte N end of Snag Lake in north of county. 1731 Comment
  CAS-BOT-BC384469  Silene antirrhina Lowell Ahart 1980-5-25 2343 Butte Along Ponderosa Way 500 Comment
  SEINET10537656  Silene californica Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4253 Butte T22N R7E nw sec 31. Ca. 2 mi e of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest; 900 m. 900 Comment
  CAS-BOT-BC385886  Silene douglasii E. B. Copeland 1931-6-19 634 Butte Jonesville, near the Summit 2100 Comment
  CHSC58899  Silene douglasii Lowell Ahart 1992-7-29 6878 Butte About 1 mile north-east of the Carr Mine, about 3/4 mile north-west of Lotts Lake. 1798 Comment
  CHSC48266  Silene douglasii var. douglasii Vernon H. Oswald 1983-8-17 Butte Trail between Humboldt Summit and Humboldt Peak, ca. 3.3 mi ne of Jonesville. 2023 Comment
  CHSC38303  Silene gallica Vernon Oswald 1983-3-26 205 Butte Upper Bidwell Park, Chico, on the north rim at the level of Horseshoe Lake. 152 Comment
  CHSC4006  Silene laciniata subsp. californica J. W. Cherry 1967-3-29 Butte On hillside, ca. 100 yds. e. of end of Bidwell Park road. 182 Comment
  CHSC46352  Silene laciniata subsp. californica Lowell Ahart 1989-5-29 6313 Butte Along the road to the Forbestown Reservoir, about 1/2 mile south-west of the Forbestown Reservoir, about 4 miles north-east of Forbestown. 548 Comment
  UC203626  Silene lemmonii A. A. Heller 1914-6-22 11488 Butte edge of forest about Chico Meadows Comment
  CHSC38032  Sinapis arvensis R. E. Preston 1982-11-5 363 Butte At roadside, n side of Cana Hwy, 100 yds e of Cana-Pine Creek Rd, Cana. 50 Comment
  CDA31956  Sisymbrium officinale L. Ahart 2009-5-8 15656 Butte On the south side of the gravel road, about 10 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico. Comment
  CHSC64242  Sisyrinchium idahoense S. C. Morey 1983-8-1 663 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  SEINET10472651  Smilacina racemosa var. amplexicaulis Mary Susan Taylor 1978-7-18 Taylor 1700 Butte On top of Humboldt Peak, at Humboldt Summit, on Butte-Tehama County line. 2159 Comment
  CHSC113978  Solanum americanum Lowell Ahart 2014-11-17 19911 Butte Just below the high water line of Lake Oroville, about 50 yards west of the Enterprise Boat Launch Area, parking area, about 11 miles (air) northeast of Oroville. 253 Comment
  JEPS119632  Solanum americanum Lowell Ahart 2012-6-14 18185 Butte South of CARD community, Lower Bidwell Park, Chico. Comment
  CHSC109076  Solanum jasminoides Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17870 Butte Between the edge of the paved road and the back of a home, east of the Deer Pen, between Table 12 and 13 , Lower Bidwell Park, Chico. 65 Comment
  SEINET10546505  Solanum nodiflorum Mary Susan Taylor 1975-10-29 Taylor 970 Butte Butte Creek, ca. 2-500 yds S of Humbug Road, ca. 2 mi E of junction of the Skyway and Humbug Road; with Platanus racemosa, Rhus trilobata. Comment
  CHSC8621  Solanum parishii L. V. Ritter 1969-4-29 207 Butte 4.2 mi. se of Chico, s side of Humbug Rd. Comment
  NY821150  Solanum parishii A. A. Heller 1902-5-6 5455 Butte Berry Canyon (Near Clear Creek) Comment
  UCSB63941  Solanum parishii Lorenz, Thomas 1972-4-23 Butte 7.6 mi 8 of highway 99E overpass and 20 ft below high 32 Comment
  CDA6222  Solanum scabrum W. Sauer, L. Heinricks 1974-9-11 Butte Stirling City. 0 Comment
  CAS-BOT-BC157538  Solanum umbelliferum L. Ahart 1987-5-9 5599 Butte Along Pulga Road, about 1/2 mile south-west of Bardees Bar along the North Fork of the Feather River, about 3 miles south-west of Pulga 365 Comment
  SEINET10475256  Solidago canadensis subsp. elongata Mary Susan Taylor 1982-8-16 Taylor 4988 Butte T24N R4E sw/se sec 28. Paradise NE quad. S end of Stirling City, along both sides of the Skyway. Mixed Evergreen Forest; 3400 ft. 1036 Comment
  CAS-BOT-BC365377  Solidago elongata H. F. Copeland 1920-8-12 125 Butte In Jonesville Meadow 1219 Comment
  CHSC39419  Soliva sessilis J. D. Jokerst 1984-4-7 1967 Butte Along the edges of a dirt road, top of North Table Mountain, north of Cherokee rd. Comment
  CHSC82441  Soliva sessilis Lowell Ahart 2002-5-7 9613 Butte High banks of a pond, at the beginning of a southeast branch of Schirmer Ravine, about 50 yards east of the pond on the east side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. 228 Comment
  CAS-BOT-BC365840  Soliva sessilis Lowell Ahart 1979-5-11 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC108785  Sonchus asper subsp. asper L. P. Janeway 2011-6-7 10363 Butte Sacramento Valley. Along Nelson Ave 1.0 road km west of its bridge over Thermalito Forebay, about 5.7 air km west of Oroville. Weedy edge of road side drainage. 99 Comment
  CHSC46401  Sorbus californica Lowell Ahart 1989-5-29 6323 Butte Near a stream, west of the dirt road, west of Pinkard Creek, about 1/4 mile north of the Lost Creek Dam. 1005 Comment
  CHSC100940  Sorbus scopulina var. cascadensis R. A. Schlising; Sandra Morey 1982-6-7 4290 Butte Several miles east of the village of Butte Meadows; roadside bank above Butte Creek. 1524 Comment
  CHSC20343  Sorghum halepense E. Parreno 1968-4-15 52 Butte Roadside of e 9th st. ca. 100 m. from the Freeway, Chico. 59 Comment
  CHSC51877  Spartium junceum L. P. Janeway 1988-6-14 2792 Butte Ridgetop along hwy 32 0.9 mi N of Ten Mile House. 518 Comment
  RSA719718  Spartium junceum Michael A. Vincent, K. Levings 2006-7-29 12893 Butte NE of Chico along Rt. 32. Comment
  CDA20087  Spartium junceum R. Harrie 2003-1-13 PDR 1280328 Butte Northern California; Old mine site. 0 Comment
  CAS-BOT-BC389943  Spergula arvensis Lowell Ahart 1980-3-22 2047 Butte Peter Ahart Ranch, Honcut 50 Comment
  JEPS114737  Spergula arvensis subsp. arvensis Lowell Ahart 2008-5-12 14735 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 40 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam 258 Comment
  CHSC66074  Spergularia bocconi Vernon H. Oswald 1996-5-22 7622 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On a bank along the Sacramento River at the N end of the Riparian Sanctuary. 30 Comment
  CAS-BOT-BC390129  Spergularia bocconi Lowell Ahart 1978-4-18 s.n. Butte Sutter Buttes Region. Peter Ahart Ranch, Honcut 50 Comment
  CHSC28823  Spergularia rubra J. D. Jokerst; T. B. Devine, D. Greenstein 1979-5-18 415 Butte Top of north Table Mt, ca 1.0 mi n of Cherokee Rd. Along dirt roads. 381 Comment
  CAS-BOT-BC390597  Spergularia rubra John Thomas Howell 1962-6-16 37585 Butte 3.5 mi. n. of Pentz 396 Comment
  CHSC45808  Spiraea densiflora subsp. splendens L. P. Janeway; R. A. Schlising 1988-7-22 3045 A Butte Near the saddle between Coon Hollow and Chips Cr. 1889 Comment
  CHSC25365  Spiranthes porrifolia Hayes; Warner 1977-8-14 39 Butte Along Butte Creek 10 mi n of Butte Meadows turn on Highway 32. 1280 Comment
  CHSC44075  Spiranthes porrifolia L. P. Janeway 1987-6-5 2130 Butte Along the OroQuincy Hwy just south of bridge across Canyon Cr arm of Lake Oroville. 289 Comment
  CHSC65424  Stachys ajugoides var. rigida Vernon Oswald 1983-8-17 980 Butte Near Humboldt Rd. between Butte Meadows and Jonesville at the jct. of Colby, Willow, and Butte Creeks. Growing on the edge of Colby Creek. 1493 Comment
  CHSC39969  Stachys pycnantha L. Ahart; P. Ahart 1983-8-10 4268 Butte Along La Porte Rd, ca. 4 mi ne of Bangor. 350 Comment
  RSA0109093  Stachys pycnantha L. Ahart 2006-9-11 13286 Butte South edge of the North Fork of the Feather River, north side of Highway 760, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 432 Comment
  SEINET10969018  Stachys rigida Mary Susan Taylor 1975-8-31 Taylor 879 Butte Riparian Woodland, on Ernies Island in Butte Creek, ca. 50 ft S of Humboldt Rd, ca. 0.5 mi E of Butte Meadows. 1341 Comment
  UC1594538  Stellaria borealis subsp. sitchana Lowell Ahart 1992-8-2 6902 Butte about 3 air mi ne Concow Reservoir (on w side of Concow Meadow); Concow Meadow 1097 Comment
  CAS-BOT-BC391088  Stellaria longipes subsp. longipes H. F. Copeland 1920-8-1 190 Butte Jonesville 1219 Comment
  RSA0041904  Stellaria longipes subsp. longipes H. F. Copeland 1931-6-10 s.n. Butte Jonesville. Gulch draining into Colby Canyon. 1524 Comment
  SD8166  Stellaria longipes subsp. longipes Mrs. R. M. Austin 1883-1 Butte Comment
  UC1609331  Stellaria longipes var. longipes Lowell Ahart 1993-7-23 7111 Butte about 6 air mi ne Feather Falls (e side of Fall River, e of campgrounds on large gravel bar along Fall River); Fall River 1036 Comment
  UC478520  Stellaria longipes var. longipes E. B. Copeland 1931-6 638 Butte Joneville Jonesville 1500 Comment
  CHSC111720  Stellaria media Lowell Ahart 2012-6-14 18186 Butte On the south side of the path, south of CARD Community Center, Lower Bidwell Park, Chico. 62 Comment
  CHSC3291  Stellaria media M. L. Hillier 1966-2-14 Butte On hillside n. of Bidwell Municipal Golf Course club house. Comment
  CHSC61210  Stellaria nitens Vernon H. Oswald; Lowell Ahart 1993-3-24 5235 Butte E side of Dry Creek Canyon N of the historical site of Pentz, on the east side of secondary drainage entering Dry Creek 2 mi. N of Pentz Rd. 243 Comment
  JEPS124176  Stellaria nitens Lowell Ahart 2015-3-14 19952 Butte About 1 1/4 miles (air) northwest of Cherokee Road, about 7 miles (air) north of Oroville. Comment
  SEINET10480708  Streptanthus Mary Susan Taylor 1980-7-6 Taylor 3074 Butte T25N R3E ne sec 11, Butte Meadows quad; on S side of Old Humboldt Rd, on rocky slope beneath power lines, ca. 0.9 mi W of Butte Meadows Forestry Station. With R.A. Schlising. 1341 Comment
  CAS-BOT-BC87388  Streptanthus longisiliquus Lowell Ahart 1983-8-16 4283 Butte Sierra Nevada. Along edge of Humboldt Road, about 3 miles southwest of butte Meadows. 1450 Comment
  CHSC48347  Streptanthus longisiliquus Vernon Oswald 1983-6-22 748 Butte On the s side of Humboldt Rd. (to Butte Meadows) 3.3 mi n-e of Calif. Hwy 32. 1386 Comment
  UCD116032  Streptanthus longisiliquus Robert E. Preston 2001-7-9 1673 Butte N side of The Skyway, ca. 0.15 m w of Dogtown Rd, T23N R3E nw 1/4 of ne 1/4 Section 36 713 Comment
  CAS-BOT-BC87440  Streptanthus polygaloides L. P. Janeway 1993-5-2 4334 Butte South of Serpentine Point and above Highway 70. 518 Comment
  UC659997  Streptanthus polygaloides Lincoln Constance 1941-5-28 2826 Butte Magalia Sierra Nevada foothills, South Branch of the Feather River 487 Comment
  CAS-BOT-BC87443  Streptanthus polygaloides Walter S. Lennon 1974-1-1 s.n. Butte Sierra Nevada. Near Pulga. Comment
  POM117399  Streptanthus polygaloides C. C. Bruce 1897-04 1942 Butte Nelson s bar. Comment
  SEINET10448516  Streptanthus polygaloides Mary Susan Taylor 1981-5-15 Taylor 3737 Butte 4000 ft. T22N R5E sene sec 2, Pulga SW quad. At loop in RD 23N00.l, ca. 0.5 mi S of Coyote Gap on Four Trees Rd, ca. 4 air mi E of Pulga on Hwy 70. Serpentine barrens within Yellow Pine Forest. 1219 Comment
  SEINET11994741  Streptanthus polygaloides Unknown 1985-1 4975 Butte W of Lunt Rd, about 0.5 mi N of intersection of Lunt Rd & Hwy 70, N of Yankee Hill, N of Oroville 503 Comment
  CHSC36696  Streptanthus tortuosus R. E. Preston 1981-6-16 88 Butte Ca. 10.5 mi ne of Paradise. 1127 Comment
  UCD116303  Streptanthus tortuosus Robert E. Preston 1984-6-19 463 Butte 1.6 km north of Merrimac site, west side of Oro-Quincy Highway. 1372 Comment
  UCD164223  Streptanthus tortuosus N. Ivalu Cacho; Sharon Y. Strauss 2013-4-19 IC-SS 300 Butte Table Mountain. 1157 Comment
  SEINET10448523  Streptanthus tortuosus Mary Susan Taylor 1976-4-24 Taylor 1071 Butte Abundant on Big Bald Rock, ca. one quarter mi W of Bald Rock Rd, ca. 3 mi E of Lake Madrone, ca. 13 mi NE of Orovil le; with Quercus chrysolepis. 998 Comment
  CHSC71168  Streptanthus tortuosus var. suffrutescens Lowell Ahart 1998-6-3 7968 Butte About 1/4 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CHSC62098  Streptanthus tortuosus var. tortuosus L. P. Janeway 1993-6-23 4397 Butte Plumas National Forest. Upper end of Galen Ridge, 250 ft northwest of Bald Rock Road 0.7 mi southwest of Oroville-Quincy Hwy. 1036 Comment
  CHSC36089  Streptopus amplexifolius var. americanus R. A. Schlising; K. Tarp, D. Burk 1982-6-27 4306 Butte SE part of county S of Lost Creek Res. At crossing of Strawberry Valley Creek. 1097 Comment
  SEINET10940278  Styrax officinalis var. fulvescens Mary Susan Taylor 1978-7-21 Taylor 1837 Butte Big Bald Rock, ca. 2 mi E of Lake Madrone, ca. 10 mi NE of Oroville; Yellow Pine Forest, granite soils. 998 Comment
  CHSC37629  Styrax officinalis var. redivivus T. B. Devine 1979-10-5 596 Butte Feather River Canyon, S of Hwy 70 along Bear Ranch Creek, 3/4 mi S of Arch Rock Tunnel, adjacent to PG and E rest stop. 548 Comment
  CAS-BOT-BC48055  Styrax redivivus John Thomas Howell 1961-9-22 36757 Butte North fork of Feather River, 10 miles from Oroville. Comment
  UCSB57876  Suaeda calceoliformis Oswald, Vernon 1989-9-6 Butte West Liberty Rd.; along the N boundary of Gray Lodge Wildlife Area; 0.8 mi. W of Pennington Rd.; T17N R1E nw/S12 19 Comment
  CHSC101122  Symphoricarpos albus var. laevigatus Lowell Ahart 2009-5-23 15731 Butte On the west edge of a meadow and the east bank of Big Chico Creek, west of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  JEPS113207  Symphoricarpos albus var. laevigatus Lowell Ahart 2007-5-16 13889 Butte On the east side of Jordan Hill Road, about 1/10 mile northwest of the bridge across Concow Creek, about 1 1/2 miles (air) southwest of Concow Reservoir 436 Comment
  JEPS123968  Symphoricarpos mollis Lowell Ahart 2015-7-4 20270 Butte About 3/4 mile west of the intersection of Lumpkin Ridge Road, road to Cascade or Fall River and County Road, about 7 (air) miles northeast of Feather Falls. Comment