Search Results — 2000 specimen records retrieved (1605 records with coordinates)
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 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/consortium/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  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
  CHSC34968  Abutilon theophrasti R. A. Schlising 1981-9-26 4208 Butte West of Chico along Sacramento Avenue; just west of Mud Creek. Comment
  UCD116173  Abutilon theophrasti P. B. Kennedy 1922-1 s.n. Butte Oroville. Comment
  CAS-BOT-BC330578  Acer circinatum Sally Bianco 1995-9-17 1026 Butte Near Camp Creek Rd., along Dogwood Creek. 1098 Comment
  CAS-BOT-BC330630  Acer glabrum var. glabrum E. B. Copeland 1930-6-28 s.n. (distributed as UCBerkeley's 423 ) Butte Jonesville, near Butte Creek 2100 Comment
  CAS-BOT-BC331603  Acer macrophyllum A. A. Heller 1919-5-17 13166 Butte Banks of the Feather River near Stirling Comment
  CHSC33785  Achnatherum lemmonii M. S. Taylor 1981-4-10 3522 Butte Ca. 50 ft up from creek, ca. 1/4 mi n of Pine Cluster Ranch, between Concow Rd and a large oak-covered knoll, ca. 6 mi n of Jarbo Gap on Hwy 70. 731 Comment
  CHSC84411  Achnatherum stillmanii Lowell Ahart 2003-7-20 10434 Butte West of gate of Bald Rock Dome, Forest Road 21N27Y, east of Bean Creek Road, about 1/2 mile east of Little Bald Rock, about 2 1/8 miles (air) southeast of Brush Creek. 1032 Comment
  CAS-BOT-BC29947  Achyrachaena mollis H. E. Brown 1897-4-15 s.n. Butte near Clear Creek 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
  CAS-BOT-BC29948  Achyrachaena mollis Lowell Ahart 1970-5-12 1107 Butte Peter Ahart Ranch, near Honcut 45 Comment
  SEINET11839288  Achyrachaena mollis Unknown 1975-1 25 Butte ca 5 m from Skyway Rd., 5.6 mi E of Chico 305 Comment
  SEINET11842154  Achyrachaena mollis K. R. Fechko 1982-1 19 Butte ca 2.5 mi S of Tehama Co. line, E side of Meridian Rd. ca 1.5 mi N of junction with Hwy 99;.. 91 Comment
  CHSC113096  Acmispon americanus var. americanus Lowell Ahart 2013-11-18 19282 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
  CHSC6592  Acmispon americanus var. americanus G. Estrem 1968-5-2 12 Butte Ca. 5 mi se of Chico on Skyway, ca. 100 yds. s of road in open field. Comment
  UCD103795  Acmispon americanus var. americanus A. A. Heller 1914-7-23 11615 Butte Chico Meadows. 1219 Comment
  CHSC33115  Acmispon brachycarpus M. S. Taylor 1981-5-14 3734 Butte N side of Feather River Hwy 70 at Plumas NF boundary sign, ca. 2 mi ne of Jarbo Gap. 609 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
  CHSC33123  Acmispon nevadensis M. S. Taylor 1981-5-15 3748 Butte Edge of landing at short spur rd off Chino Ridge Rd (22N28) near Last Cahnce Creek, ca. 4 air mi due e of Jarbo Gap on Feather River Hwy 70. 853 Comment
  CHSC62108  Acmispon nevadensis var. nevadensis L. P. Janeway 1993-7-1 4417 Butte Plumas National Forest. North side of French Creek, 0.3 mi west of mouth of Ram Creek; along Rd 22N34 0.3 mi west of the 'low water crossing' of French Creek. 624 Comment
  CHSC97361  Acmispon parviflorus Paul Maslin 2005-5-1 59 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10609754E 4410046N. 243 Comment
  CHSC50040  Acmispon strigosus Lowell Ahart 1990-4-15 6455 Butte Below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/8 mile northwest of the Enterprise Bridge across Lake Oroville. 289 Comment
  CHSC44495  Acmispon wrangelianus Lowell Ahart 1988-4-29 5965 Butte Near the ditch which was part of the Honcut Flume, on Joie Osgood Ranch, about 2 miles north and 2 1/2 miles east of Honcut, about 12 miles south-east of Oroville. 76 Comment
  CHSC11816  Aconitum columbianum E. B. Copeland 1929-7-22 363 Butte Jonesville. 1500 Comment
  UCD95295  Aconitum columbianum E. B. Copeland 1929-7-22 363 Butte Jonesville. 1500 Comment
  CHSC52677  Aconitum columbianum var. columbianum Kirsten Tarp 1983-8-5 323 Butte Ca. 1.0 mi sw of Jonesville at Colby Creek, near stream. 1487 Comment
  UCD98572  Aconogonon davisiae E. B. Copeland 1931-6-19 629 Butte Jonesville. At 'the Summit. 2100 Comment
  UCR51802  Adenocaulon bicolor H. F. Copeland 1928-8-18 0399 Butte Jonesville, Butte Creek Canyon 1529 Comment
  CAS-BOT-BC65556  Adiantum capillus-veneris M. S. Taylor 1979-5-4 1983 Butte Millsap Bar campground, ca. 9 mi ne of jct of Millsap Bar Rd with Brush Creek Rd, ca. 26 mi ne of Oroville 1005 Comment
  SEINET7728123  Adiantum emarginatum C. C. Parry 2000-1 Butte Chico Comment
  CAS-BOT-BC65620  Adiantum jordanii Saichi Kawahara 1968-5-4 368 Butte James Ripley's property, Graham Road, Paradise 640 Comment
  CHSC27957  Adiantum jordanii M. S. Taylor 1979-3-20 1942 Butte Ca. 1 mi n of jct of north fork Feather River and Hwy 70 along an old road, ca.10 mi n of Oroville. 304 Comment
  CHSC41988  Adiantum jordanii Lowell Ahart 1975-3-7 704 Butte Along Ponderosa Way, about 1 1/2 miles south of the Ponderosa Reservoir, north-west of Forbestown. 426 Comment
  SEINET10494494  Aesculus californica Mary Susan Taylor 1973-1 Taylor 64 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  CHSC33946  Ageratina occidentalis M. S. Taylor; L. Ahart 1981-8-16 4206 Butte N side of 25N04, near upper Big Kemshew Creek, ca. 2 mi SE of Philbrook Reservoir, ca. 6 mi NE of Stirling City. 1950 Comment
  CHSC45668  Ageratina occidentalis V. Oswald; L. Ahart 1988-8-16 3693 Butte Ca. 5 mi (air) SE of Jonesville on the ridge running eastwards from the peak of Snow Mtn. 2103 Comment
  CHSC38318  Agoseris grandiflora Vernon Oswald 1983-6-13 668 Butte Upper Bidwell Park, Chico, beside the road between Centennial Ave. and the Police Pistol Range. 91 Comment
  CHSC30030  Agoseris heterophylla Lowell Ahart 1980-5-4 2209 Butte Ca. 50 m SW of the intersection of Forbestown Rd and Hurleton Swedes Flat Rd, ca. 1/2 mi SE of Hurleton. 600 Comment
  CHSC42475  Agoseris heterophylla Lowell Ahart 1987-5-12 5636 Butte South of Lumpkin Ridge Road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CHSC90943  Agoseris heterophylla Lowell Ahart 2005-4-18 11730 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
  CHSC101838  Agoseris retrorsa Lowell Ahart 2009-5-23 15752 Butte Upper Bidwell Park, about 10 miles northeast of Chico, about 100 yards west of the interection of Highway 32 and Ten Mile House Road, on north side of Ten Mile House Road. 461 Comment
  CHSC115189  Agoseris retrorsa Lowell Ahart 2015-4-27 20090 Butte On the northside 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) of Oroville. 304 Comment
  CHSC33795  Agoseris retrorsa M. S. Taylor 1981-5-4 3594 Butte SW of 21N80, S side of Spur rd near plantation, ridge south of Galen Ridge, ca. 3 mi SW of Brush Creek. 914 Comment
  UCD128658  Agoseris retrorsa A. S. Crafts 1935-5-15 s.n. Butte Yankee Hill, Ponderosa Way. Comment
  CHSC70813  Agrimonia gryposepala B. Castro; H. Durio, L. Gehrung 1995-7-24 590 Butte Ca 1.5 air mi S of Hungry Hunt Oeak, and 1.5 mi E of Hwy 70, ca 0.2 mi S on 'A' Spur off USFS Rd 22N84. 914 Comment
  SEINET10506827  Agropyron Mary Susan Taylor, Lowell Ahart 1981-8-15 Taylor 4181 Butte T25N R4E se 1/4 se 1/4 sec 29. Paradise NE quad. Weed lot on N side of the Sky- way in Inskip. Yellow Pine Forest. 4800 ft. 1463 Comment
  SEINET10506829  Agropyron Mary Susan Taylor 1981-5-22 Taylor 3794 A Butte T23N R5E nw/se sec 30, Pulga quad. Around large landing on saddle of ridge running SE from Flea Mt, above Pulga, ca. 5 air mi E of Magalia. 3600 ft. 1097 Comment
  SEINET10942481  Agropyron intermedium Mary Susan Taylor 1978-7-21 Taylor 1835 Butte Big Bald Rock, ca. 2 mi E of Lake Madrone, ca. 10 mi NE of Oroville. 998 Comment
  CHSC69711  Agrostis capillaris Lowell Ahart 1997-9-27 7915 Butte Back yard at the Ehmann Home, corner of Lincoln and Robinson Streets, Oroville. 51 Comment
  CDA28123  Agrostis elliottiana L. Ahart 2004-4-6 10729 Butte Peter Ahart Ranch, ~ 2.25 mi N and 1.25 mi E of Honcut, ~12 mi (air) SE of Oroville. Comment
  JEPS104036  Agrostis exarata Lowell Ahart 2003-6-30 10333 Butte In the gutter on the n side of Fields Ridge Rd, n of the Ponderosa Reservoir, ca 3 mi (air) n of Forbestown. 491 Comment
  UC1562349  Agrostis exarata Vernon Oswald and Lowell Ahart 1990-7-31 4417 Butte ca 2 mi ne Concow (Jeep Trail between Concow Rd and Rim Rd) 899 Comment
  SEINET10789982  Agrostis exarata Vernon H. Oswald, Lowell Ahart 1990-7-31 Oswald 4417 Butte Jeep Trail between Concow Rd and Rim Rd, ca. 2 mi northeast of Concow. Common on disturbed, gravelly, serpentine soils of a drainage crossing the trail in an area of brushy and wooded slopes. 899 Comment
  SEINET10790024  Agrostis exarata Lowell Ahart 1990-5-21 Ahart 6475 Butte 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. Spike Bentgrass. 30 Comment
  CAS-BOT-BC139436  Agrostis hyemalis A. A. Heller 1914-8-6 11647 Butte In Chico Meadows. 1219 Comment
  JEPS121947  Agrostis idahoensis Lowell Ahart 2014-7-7 19587 Butte In the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. Comment
  SEINET10510256  Agrostis idahoensis Vernon H. Oswald, Lowell Ahart 1959-8-15 Oswald 3944 Butte Soda Ridge Rd, 1.4 mi W of its junction with Coon Hollow Rd, ca 1.2 mi (air) n of Philbrook Reservoir. On a boggy meadow adjacent to a shallow spring-fed lake N of and visible from the road. 1753 Comment
  CHSC8192  Agrostis microphylla D. McClain 1969-4-18 63 Butte 500 yds. N. of gate on Table Mountain, 5 mi. s.w. on Cherokee Rd. from its juction with Feather River Highway. 487 Comment
  JEPS122225  Agrostis microphylla Lowell Ahart 2014-4-20 19383 Butte About 50 yards southeast of a small falls, about 3/4 mile northwest of the parking area on the west side of Cherokee Road, about 7 miles (air) north of Oroville. Comment
  CAS-BOT-BC139081  Agrostis pallens Lowell Ahart 1980-7-4 2462 Butte Along Forbestown Road. 750 Comment
  CHSC59035  Agrostis pallens Lowell Ahart 1992-7-26 6838 Butte 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
  UC1594733  Agrostis pallens Lowell Ahart 1992-7-26 6838 Butte small stream about 1/2 mi n Carr Mine (s side of hollow, about 2 (air) mi s of Snow Mountain); Coon Hollow 1737 Comment
  CAS-BOT-BC138770  Agrostis scabra Lowell Ahart 1984-7-19 4738 Butte About 1.5 mile southeast of Bald Mountain, 0.75 mile west of Oak Point, about 4 miles northeast of Stirling City. 1500 Comment
  CHSC71407  Agrostis stolonifera Lowell Ahart 1998-7-18 8041 Butte Southwest 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
  RSA716149  Agrostis stolonifera L. Ahart 2005-7-13 12150 Butte About 20 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
  UC1586513  Agrostis thurberiana Vernon H. Oswald and Lowell Ahart 1991-8-19 4836 Butte n side Forest Rd. 25N15 (between Philbrook Reservoir and Coon Hollow) 1767 Comment
  CHSC105681  Agrostis variabilis Lowell Ahart 2010-9-21 17220 Butte Open meadow-like area, near a poor camp, 30 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
  CHSC63546  Aira caryophyllea Vernon H. Oswald 1994-4-14 6106 Butte Old railroad grade along the N. Fork Feather River ca. 0.25 mi W of Stony Creek, E of Poe Powerhouse. 301 Comment
  JEPS115952  Aira caryophyllea Lowell Ahart 2009-4-26 15616 Butte About 10 miles northeast of Chico, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 150 yards southwest of Ten Mile House Road, on south edge of a small open meadow 286 Comment
  CDA38802  Alisma triviale L. Ahart 2012-6-28 18238 Butte On the north side of Big Chico Creek, east of Sycamore Pool, Lower Bidwell Park, Chico. Comment
  CHSC27792  Allium amplectens Rod Bunday 1978-4-25 16 Butte Ca. 200 ft w of Cohasset Rd ca. 12 mi ne of East Ave. between Chico and Cohasset. 304 Comment
  CHSC3460  Allium amplectens Roger Jaegel 1966-4-10 98 Butte Located along Pentz Road, two miles east of the intersection of Highway 99. Comment
  CAS-BOT-BC460727  Allium amplectens J. D. Jokerst 1980-5-15 706 Butte Southeast of Cohasset Hwy; On top of Cohasset Ridge. 487 Comment
  CDA39428  Allium amplectens L. L. Heinricks 1974-5-2 s.n. Butte On both sides of Wilbur Road. 0 Comment
  CHSC36904  Allium campanulatum R. A. Schlising; R. Banchero 1980-6-12 3692 Butte N part of county along Hwy 32, 0.25 mi s of Tehama County line. 1121 Comment
  SEINET10971416  Allium cratericola Mary Susan Taylor 1980-4-21 Taylor 2563 Butte T20N R4E center of se sec 8. Table Mountain, ca. 8 mi N of Oroville; thin soils over basalt bedrock. With J.D. Jokerst. 610 Comment
  CHSC46524  Allium membranaceum Lowell Ahart 1980-5-25 2342 Butte Near the edge of Ponderosa Way, about 2 miles south of Ponderosa Dam, north-west of Forbestown. 548 Comment
  CAS-BOT-BC472968  Allium membranaceum Lowell Ahart 1980-5-25 2342 Butte Along Ponderosa Way Comment
  CHSC23661  Allium obtusum var. obtusum M. S. Taylor 1976-4-24 1072 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
  CHSC59362  Allium peninsulare J. L. Guardino 1992-4-18 15 Butte Southern rim of Chico Creek Canyon, 1.7 mi e of Oak Hollow Ln. 268 Comment
  RSA767686  Allium sanbornii var. sanbornii Lowell Ahart 2010-7-27 16911 Butte West side of Forbestown Road, about 1/10 mile north of Black Bart Road, about 11 miles east of Oroville 742 Comment
  SBBG29977  Allium validum E. B. Copeland 1930-7-21 Butte Jonesville 1500 Comment
  UC169648  Allium validum Mrs. R. M. Austin Aug. 1896 222 Butte Colby Comment
  JEPS104414  Allophyllum divaricatum Lowell Ahart 2003-7-10 10369 Butte On both sides of the dirt road to the power generator, on the n side of Ponderosa Reservoir, ca 1 1/2 mi (air) e of the Ponderosa Dam. 331 Comment
  CAS-BOT-BC138038  Alopecurus carolinianus Lowell Ahart 1990-4-15 6450 Butte Below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/8 mile northwest of the Enterprise Bridge across Lake Oroville. 289 Comment
  SEINET10478813  Amaranthus blitoides Mary Susan Taylor Taylor 774 Butte Weedy or cultivated plants of Chico. 61 Comment
  JEPS106013  Amaranthus deflexus Lowell Ahart 2004-9-28 11404 Butte Fallow field, on the south side of the Oroville Chico Highway, west of Butte Creek, about 1 1/8 miles southeast of the Midway, about 2 1/8 miles (air) northeast of Durham, about 3 1/2 miles (air) southeast of Chico 57 Comment
  UC1609225  Amaranthus palmeri Lowell Ahart 1993-10-4 7270 Butte about 0.1 mi e Durham (about 0.1 mi w of Butte Creek, along the n side of Durham Pentz Road) 48 Comment
  CDA6727  Ambrosia artemisiifolia L. Ahart, Vernon Oswald 1999-10-3 8296 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. Comment
  JEPS124126  Ambrosia psilostachya Lowell Ahart 2015-10-9 20539 Butte About 100 yards south of Ten Mile House Road, about 10 miles northeast of Chico. Comment
  CHSC30019  Amelanchier pallida L. Ahart 1980-5-19 2315 Butte South Fork of the Feather River. Ca. 1/9 mi n of the Golden Trout Crossing, ca. 5 mi w of the Sly Creek Dam. Near bridge. 800 Comment
  CAS-BOT-BC142955  Amelanchier utahensis Lowell Ahart 1989-5-29 6320 Butte Along the dirt road, just west of Pinkard Creek, about 1/4 miles north of the Lost Creek Dam 1005 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
  CHSC3572  Amsinckia intermedia R. D. Briggs 1966-3-2 49 Butte Salmon Hole', 4 miles above the Bidwell Park golf course. 106 Comment
  CHSC61714  Amsinckia lycopsoides Scott Torricelli 1989-3-21 1 Butte On the N.E. corner of Humboldt Rd. and Forest Ave. Chico. 91 Comment
  RSA32735  Amsinckia lycopsoides A. A. Heller 1942-4-5 16419 Butte Just north of Artois. Comment
  UC172842  Amsinckia menziesii var. menziesii A. A. Heller 1913-4-7 10725 Butte hills 6 mi n Oroville Comment
  SEINET10449591  Anagallis arvensis Mary Susan Taylor 1975-4-26 Taylor 517 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
  CAS-BOT-BC137826  Andropogon glomeratus var. pumilus M. S. Taylor 1977-11-12 1532 Butte On north side of Upper Bidwell Park Road, Chico. 213 Comment
  SEINET10832444  Antirrhinum breweri Lowell Ahart 1985-6-30 Ahart 5073 Butte Abut 1 mile west of intersection of Forbestown Road with Robinson Mill Road, N of Oroville. Comment
  CHSC43144  Antirrhinum vexillo-calyculatum subsp. intermedium R. A. Schlising; J. D. Jokerst 1980-7-2 3815 Butte 0.74 mi SW of Butte Creek. NE of Forest Ranch. 658 Comment
  JEPS124024  Antirrhinum vexillocalyculatum subsp. intermedium Lowell Ahart 2015-6-16 20243 Butte About 2 miles east of the intersection of Lumpkin Ridge Road, County Road and road to Fall River, about 6 3/4 miles (air) northeast of Feather Falls. 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
  UC1609160  Aphanes macrosepala Vernon H. Oswald and Lowell Ahart 1993-3-24 5241 Butte E side of Dry Creek Canyon N of the historical site of Pentz, on the east side of a secondary drainage entering Dry Creek 2 mi N of Pentz Rd. 274 Comment
  CHSC12407  Aphanes occidentalis Lowell Ahart 1973-3-1 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC45189  Aphanes occidentalis Lowell Ahart 1973-4-15 193 Butte Peter Ahart Ranch, about 1 1/4 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC96236  Aphyllon purpureum R. Fischer 2006-4-10 991 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, open, grassy/rocky, hillside overlooking Big Chico Creek. 518 Comment
  CHSC44152  Apocynum androsaemifolium V. Oswald; L. Ahart 1988-7-29 3638 Butte Ca. 5 mi (air) se of Jonesville on the n edge of the ridge running eastwards from the peak of Snow Mtn. 2103 Comment
  CHSC96833  Apocynum androsaemifolium Lowell Ahart 2007-5-29 13949 Butte On the south side of the Dome Trail, trail leads to the Middle Fork of the Feather River, at 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. 844 Comment
  CHSC25474  Apocynum cannabinum L. Ahart 1977-6-16 1417 Butte Edge of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC52683  Aquilegia formosa var. truncata Kirsten Tarp 1983-8-6 330 Butte N part of county, ca. 0.9 mi W of Cherry Hill. 1414 Comment
  CHSC39284  Aralia californica Lowell Ahart 1983-7-24 4214 Butte Small wash at the Forbestown Res., about 5 miles north-east of Forbestown. 450 Comment
  UC1950043  Arbutus unedo Lowell Ahart, Josephine Guardino, Steve Green 2009-2-20 15490 Butte Near the east side of Cedar Grove, Lower Bidwell Park, Chico 67 Comment
  SEINET1912948  Arceuthobium californicum R. L. Mathiasen 2010-1 1065 Butte 0.8 km S of Colby Mtn. Lookout on forest rd. 27N36 1750 Comment
  CHSC4728  Arceuthobium occidentale R. Carter 1966-6-12 423 Butte Found 7 mi. E of Oroville at 6120 Woodleaf St. Rt. 1/8 mi. W off Feathervale; Growing parasitically on Pinus sabiniana, 50 yds W of house. 243 Comment
  CAS-BOT-BC24434  Arctostaphylos manzanita Lowell Ahart 1974-2-12 s.n. Butte Found along n. Honcut Creek. 45 Comment
  RSA633000  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27464 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  RSA633004  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27450 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  UCD51932  Arctostaphylos manzanita John Thomas Howell 1975-6-15 51113 Butte Skyway and Montana Drive, Paradise, Butte County.Transition Zone. 609 Comment
  CAS-BOT-BC38869  Arctostaphylos manzanita subsp. manzanita John Thomas Howell 1975-6-15 51113 Butte Paradise, Skyway and Montana Drive 609 Comment
  CHSC24701  Arctostaphylos manzanita subsp. manzanita J. R. Nelson 1976-3-1 6 Butte 9 mi E of Chico on Hwy 32. 548 Comment
  JEPS119509  Arctostaphylos manzanita subsp. manzanita Lowell Ahart 2012-3-2 17761 Butte About 200 yards north of Ten Mile House Road, about 200 yards west of Highway 32 about 9 miles northeast Chico. Comment
  SEINET11989068  Arctostaphylos manzanita subsp. roofii R. Gankin, Powell, R. 1966-1 869 Butte Cohasset Ridge NE of Chico 549 Comment
  CHSC40334  Arctostaphylos mewukka Lowell Ahart 1985-2-17 4840 Butte Near Kunkle Res., about 2 miles south of Paradise. 550 Comment
  SJSU9930  Arctostaphylos mewukka G. L. Baker 1968-5-5 72 Butte Paradise 609 Comment
  UC725305  Arctostaphylos mewukka A. A. Heller 1940-2-6 15491 Butte Neal Rd at Game Refuge above Bowle's Mansion; Paradise Comment
  UC726678  Arctostaphylos mewukka A. A. Heller 1942-2-7 16361 Butte along Neal Rd 3 mi below Paradise Comment
  SBBG103606  Arctostaphylos mewukka subsp. truei J. T. Howell 1976-4-2 51569 Butte Paradise 609 Comment
  CAS-BOT-BC46721  Arctostaphylos patula M. S. Taylor 1976-8-24 1074 Butte Scattered 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
  UCD51944  Arctostaphylos truei John Thomas Howell 1975-6-15 51094 Butte In Upper Sonoran Zone on volcanic rock, about 2 miles from Paradise on 'Skyway' to Chico, Butte County. 396 Comment
  CAS-BOT-BC47383  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51099 Butte about 2 miles from Paradise on Skyway to Chico 396 Comment
  CAS-BOT-BC48255  Arctostaphylos viscida subsp. viscida Lowell Ahart 1985-2-17 4841 Butte Near Kunkle Res., about 2 miles south of Paradise. 550 Comment
  CHSC42015  Arctostaphylos viscida subsp. viscida Lowell Ahart 1976-2-19 1011 Butte Near Ponderosa Way, about 3 mi south of the Ponderosa Dam on the South Fork of the Feather River, about 3 mi northwest of Forbestown. 609 Comment
  CHSC35046  Arenaria kingii var. glabrescens R. A. Schlising 1981-6-20 4101 Butte NE part of county, E of Stirling City and E of Jones Meadow. 1767 Comment
  CHSC28805  Aristida oligantha J. D. Jokerst; T. B. Devine, D. Greenstein 1979-9-13 407 Butte Top of north Table Mt, 300 m NW. of the intersection of Cherokee Rd. Comment
  UCD56450  Aristida oligantha L. Ahart 1977-7-14 1464 Butte Honcut, Peter Ahart Ranch. 50 Comment
  CAS-BOT-BC400421  Aristolochia californica Mrs. C. C. Bruce 1897-3-1 1794 Butte Little Chico Comment
  CHSC115422  Aristolochia californica Kate Ronan 2013-5-19 Butte Upper Bidwell Park, Wildwood Trail. 89 Comment
  UCD137818  Aristolochia californica K. L. McElroy 1968-4-13 37 Butte Table Mountain. 243 Comment
  CAS-BOT-BC295832  Arnica dealbata E. B. Copeland 1929-7-18 s.n. Butte Jonesville 1550 Comment
  CHSC45778  Arnica dealbata Vernon Oswald 1984-7-2 1332 Butte Intersection of Skyway (Bull Hill Rd.) and Humbug Rd. 1584 Comment
  RSA507023  Arnica dealbata E. B. Copeland 1929-7-18 399 Butte Jonesville 1550 Comment
  CAS-BOT-BC90289  Artemisia douglasiana A. A. Heller 1916-9-23 12661 Butte near Forest Ranch Comment
  CHSC93176  Asclepias cordifolia L. P. Janeway 1994-6-6 4657 Butte Northern High Sierra Nevada. East end of Watson Ridge; along Road 21N25 about 0.5 mi north of Fall River and about 1.7 mi west of Kenebeck Ridge. Ridge top and road cutbank. 1158 Comment
  JEPS115624  Asclepias cordifolia Lowell Ahart 2009-5-15 15672 Butte About 80 yards west of the dirt road which isTen Mile House Road, Upper Bidwell Park, about 2/3 mile (air) west of Highway 32, about 10 miles northeast of Chico 271 Comment
  UC600678  Asclepias cordifolia E. B. Copeland July, 1930 Butte Jonesville 1600 Comment
  UC600679  Asclepias cordifolia H. F. Copeland 1932-7-26 Butte rocky peak above Jonesville Inn; Jonesville Comment
  JEPS115885  Asclepias eriocarpa Lowell Ahart 2009-6-18 15915 Butte On dry soil, on the east side of a wash, south of the fence, about 40 yards west of the dredger piles along North Honcut Creek, about 2 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville 59 Comment
  RSA0104727  Asclepias eriocarpa Lowell A. Ahart 2009-6-18 15915 Butte On the east side of a wash, south of the fence, about 40 yards west of the dredger piles along North Honcut Creek, about 2 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. 59 Comment
  CHSC66660  Asclepias fascicularis Vernon H. Oswald; Lowell Ahart 1996-7-22 8088 Butte Sacramento National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. 32 Comment
  CHSC38245  Aspidotis californica Vernon Oswald 1982-7-23 32 Butte Bidwell Park, Chico, along Yahi Trail w of Brown's Hole. 182 Comment
  POM219414  Aspidotis densa H. F. Copeland 1928-3-4 200 Butte Near Magalia 610 Comment
  SEINET10474429  Aster chilensis var. medius Lowell Ahart 1985-10-8 Ahart 5195 Butte On the bottom and sides of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. Comment
  RSA32898  Aster subulatus var. parviflorus A. A. Heller 1923-10-13 13828 Butte Near Richvale Comment
  JEPS107277  Astragalus gambelianus Lowell Ahart 2005-4-18 11732 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
  CHSC831  Astragalus pauperculus V. Holt 1941-3-1 Butte Table Mountain near Oroville. 457 Comment
  CHSC80525  Astragalus tener var. ferrisiae Lowell Ahart 2001-4-15 8721 Butte About 15 feet southeast 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. 22 Comment
  CHSC30780  Asyneuma prenanthoides M. S. Taylor 1980-9-12 3336 Butte W side of Hwy 32, ca. 3 mi n of Forest Ranch, near Forest Ranch Fire Control Station, ca. 5 minute walk w of the Hwy on a dirt road. 975 Comment
  CAS-BOT-BC66024  Athyrium filix-femina var. cyclosorum E. B. Copeland 1929-7-29 26 Butte Jonesville 1600 Comment
  CHSC11383  Athysanus pusillus Lowell Ahart 1969-3-27 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC90603  Athysanus pusillus Susan E. Bigbee 1984-3-13 38 Butte Population ca. 50 yds s of Butte Creek and ca. 320 yds w of Covered Bridge, 6.2 mi ese of Chico. 120 Comment
  CAS-BOT-BC17452  Athysanus pusillus Lowell Ahart 1987-5-22 5665 Butte About 0.25 mile southeast of Lumpkin Ridge Road, about 1.5 mile east of Camp 18, aobut 8 miles east of Feather Falls. 1280 Comment
  SEINET10841517  Athysanus pusillus Mary Susan Taylor 1973-1 Taylor 43 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  SEINET516427  Atriplex serenana Lowell Ahart 1981-1 3218 Butte Small part of a plant about 2 1/2 ft. tall, growing on good soil, near the entrance to the Gray Lodge Waterfowl Management Area, just W of Pennington Rd., about 12 mi SW of Gridley. 30 Comment
  CHSC48287  Atriplex triangularis Vernon Oswald 1983-10-10 1077 Butte Indian Fishery, Bidwell River State Park w of Chico at the jct. of W. Sacramento Ave. and River Rd. Comment
  JEPS120069  Aucuba japonica Lowell Ahart, John Dittes, Josephine Guardino 2012-4-6 17807 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, City of Chico. Comment
  CAS-BOT-BC146176  Avena barbata Lowell Ahart 1989-5-23 6233 Butte Near a new subdivision road, 0.5 mile east of Dunstone Drive, about 0.5 mile north of Bangor Park Road, west of Bangor. 76 Comment
  CHSC92531  Avena barbata Lowell Ahart 2005-12-11 12514 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
  SEINET10507661  Avena barbata Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4856 Butte Serpentine Point, west of Yankee Hill. 550 Comment
  CAS-BOT-BC145883  Avena fatua Lowell Ahart 1981-5-24 2835 Butte Sierra Nevada. Peter Ahart Ranch, ca. 2 miles north and 0.5 miles east of Honcut. 50 Comment
  CHSC31415  Avena fatua L. Orme 1980-3-14 2 Butte 0.4 km. W. of railroad tracks, 0.8 km. SW. of Chico. 55 Comment
  SEINET11682807  Avena fatua B. K. Madsen 1970-1 29 Butte ca 300 yds N of Honeyrun Rd, 1.5 mi NE of covered bridge at jct Humbug & Honeyrun Rds, E of Chico 229 Comment
  CHSC9339  Avena sativa B. Anthony 1968-5-17 523 Butte Corner of Pentz Road and Dry Creek Road, Pentz. Comment
  RSA518702  Azolla filiculoides Lowell A. Ahart 1990-5-20 6473 Butte About 1/4 mile south of the Feather River, about 0.4 mile west of Pacific Heights Road, about 4.5 miles south-west of Oroville 30 Comment
  CAS-BOT-BC98760  Baccharis douglasii Lowell Ahart 1987-8-30 5871 Butte On dry dark soil, near Highway 70, about 1/4 miles south of Clark Road (191), about 1/2 mile north-east of 91 Comment
  CAS-BOT-BC98010  Baccharis pilularis Lowell Ahart 1986-10-16 5403 Butte about 1 mile south-west of the Ponderosa Dam, about 3 miles north-west of Forbestown 457 Comment
  JEPS87563  Baccharis pilularis Lowell Ahart 1994-10-9 7556 Butte about 3 air mi w of Forbestown (on n side of Forbestown Road, about 200 yards e of the intersection of Black Bart Road and Forbestown Road); Forbestown Road 609 Comment
  HSC96987  Baccharis pilularis subsp. pilularis R. D. Fischer 2003-11-30 17 Butte Sierra Nevada Foothills between Chico and Paradise in the Butte Creek Canyon. Edge of the Centerville Rd. 3.9 mi. N of the Honey Run Rd. and Centerville Rd. junction, 0.1 mi. N of Center Gap Rd. 183 Comment
  CAS-BOT-BC98186  Baccharis salicifolia Junea Kelley 1920-4-24 s.n. Butte Los Verjils Comment
  CHSC55061  Bacopa eisenii Lowell Ahart 1991-9-24 6730 Butte At the Rice Experiment Station, south of Highway 162, about 3.5 miles north-west of Biggs. 30 Comment
  CHSC57219  Balsamorhiza deltoidea Vernon H. Oswald; Lowell Ahart 1992-3-24 4891 Butte Lake Oroville Recreation Area on the north side of Thermalito Diversion Pool, along the first stream west of the spillway and ca. 0.2 mi north of Burma Rd. 76 Comment
  CAS-BOT-BC106429  Balsamorhiza sagittata A. A. Heller 1915-6-16 12026 Butte Summit of the Sierra Nevada above Jonesville, on the summit of a ridge 2133 Comment
  CHSC42511  Barbarea orthoceras Lowell Ahart 1987-5-6 5508 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  SEINET10973580  Barbarea orthoceras Mary Susan Taylor 1978-6-24 Taylor 1654 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
  POM272592  Barbarea vulgaris J. W. Morrison 1929-06 s.n. Butte Oroville-Quincy. Sierra Nevada mtn range. Feather River watershed. Comment
  CAS-BOT-BC75545  Berberis dictyota A. A. Heller 1928-3-2 14479 Butte Along Chico Creek east of Chico above the golf links. Comment
  CAS-BOT-BC75550  Berberis dictyota Volney Rattan 1880-1-1 s.n. Butte Brownsville. Comment
  HSC96972  Bergia texana L. Ahart 2006-8-5 13083 Butte Peter Ahart Ranch, ca. 1.5 mi. N and 300 yards E of Honcut, ca. 12 mi. S of Oroville. 30 Comment
  CDA15321  Bergia texana D. Joley, B. Villegas 1998-9-24 s.n. Butte Sierra Nevada; below Lake Oroville in Oroville Wildlife Area. 0 Comment
  CHSC38730  Berula erecta Vernon Oswald 1983-6-14 678 Butte Upper Bidwell Park, Chico, near Diversion Dam Parking Area L. 134 Comment
  HSC97042  Bidens frondosa L. Ahart 2006-9-11 13274 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
  JEPS115000  Bidens frondosa Lowell Ahart 2007-11-3 14570 Butte 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
  JEPS94871  Bidens frondosa Lowell Ahart 1998-9-11 8053 Butte about 7 air mi n of Oroville (w of the cow chute on w side of Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  JEPS120856  Bidens tripartita Lowell Ahart 2013-6-18 18802 Butte About 20 yards E of Parking Lot 16, Gray Lodge Wildlife Management Area, about 7 air miles SW of Gridley. Comment
  SD1169  Bistorta bistortoides E. B. Copeland 1929-7-20 357 Butte Jonesville, wet meadows and swamps 1550 Comment
  SEINET10474476  Blennosperma nanum Mary Susan Taylor 1973-1 Taylor 62 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  JEPS119553  Boechera breweri subsp. shastaensis Lowell Ahart 2012-2-22 17744 Butte About 400 yards east of Big Chico Creek, about 100 yards of South Rim Trail about 5/8 mile west of Highway 32, about 8 3/4 miles (air) northeast of Chico. Comment
  CAS-BOT-BC14300  Boechera platysperma E. B. Copeland 1931-6-19 643 Butte Jonesville. 1550 Comment
  CHSC28770  Boechera suffrutescens J. D. Jokerst; M. S. Taylor 1979-6-21 296 Butte Slope of Humboldt Peak, NE. corner of Butte Co. Comment
  CHSC55810  Bothriochloa laguroides var. torreyana Vernon H. Oswald; Lowell Ahart 1991-11-2 4883 Butte East side of Thermalito Diversion Pool ca. 0.3 mile north of Thermalito Diversion Dam, near Oroville. 73 Comment
  UC600574  Botrychium multifidum H. F. Copeland 1924-8-12 417 Butte Jonesville Comment
  JEPS117722  Botrychium simplex var. compositum Lowell Ahart 2010-9-28 17242 Butte 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 Philbrook Reservoir 1886 Comment
  CAS-BOT-BC417632  Boykinia major Lowell Ahart 1985-7-9 5114 Butte along the banks of Fall River, about 100 yards south of the bridge across Fall River, about 1/2 mile west of Lumpkin Ridge Road, about 2 1/2 miles north-east of camp 18, about 9 miles north-east of Feather Falls. 914 Comment
  RSA121458  Boykinia major P. L. Johannsen 1936-7-17 945 Butte 3 miles SE of Butte Meadows. 1555 Comment
  CHSC34595  Brassica nigra R. E. Preston 1981-10-23 151 Butte Between almond orchard and Sacramento Ave., ca. 0.5 km w of Meridian Rd, ca. 8 km w of Chico. 40 Comment
  CHSC38022  Brassica nigra R. E. Preston 1982-4-4 218 Butte On bank of levee; on s side of Rutherford Rd, ca. 0.7 mi w of Pennington Rd, Gray Lodge State Wildlife Area. 21 Comment
  CHSC80541  Brassica nigra Lowell Ahart 2001-5-10 8740 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. 22 Comment
  JEPS122267  Brassica nigra Lowell Ahart 2014-4-9 19336 Butte West edge of Pennington Road, at intersection of Pennington Road and Colusa Highway, about 5 miles west of Gridley. Comment
  CHSC35009  Brassica rapa R. E. Preston 1982-3-2 181 Butte Old County Dump site, ne corner of jct of Humboldt Rd and Bruce Rd; ca. 3 mi e of downtown Chico. 86 Comment
  JEPS122190  Brassica rapa Lowell Ahart 2014-4-16 19359 Butte On the sides but near the bottom of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. Comment
  JEPS110294  Brickellia californica Lowell Ahart 2006-9-11 13335 Butte Gravel bar, south side 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
  UC1594553  Briza maxima Lowell Ahart 1992-5-9 6767 Butte about 2 air mi n. Oroville (on w side of a small stream, e of Cherokee Road); Lake Oroville Recreation Area 91 Comment
  CAS-BOT-BC145538  Briza minor Lowell Ahart 1980-5-4 2217 Butte Near Hurleton. 600 Comment
  CHSC10552  Briza minor Lowell Ahart 1965-4-20 Butte Peter Ahart Ranch, Honcut. 42 Comment
  CHSC4407  Briza minor R. L. Smith 1966-5-10 12 Butte Butte Creek Canyon 4 mi. e of Skyway. Comment
  RSA715855  Briza minor L. P. Janeway 2005-3-10 8346 Butte Cascade Range Foothills [error: actually Sierra Nevada foothills] E edge of city of Chico, N side of Humboldt Road 1.8 km NE of Bruce Road. 134 Comment
  UC203848  Briza minor A. A. Heller 1914-4-14 11289 Butte 8 mi n Oroville (along streams and low places) Comment
  POM109929  Brodiaea californica var. californica C. C. Bruce 1897-04 2125 Butte Chico Comment
  CHSC29288  Brodiaea coronaria R. A. Schlising 1980-5-29 3604 Butte Richvale vernal pools. 1/4 mi S of jct Hwy 162 (east to Oroville) and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  CHSC29094  Brodiaea minor M. S. Taylor; J. D. Jokerst 1980-5-15 2620 Butte Ca. 1/2 mi e of Cohasset Rd, ca. 3 mi n of Chico. 91 Comment
  UC1303078  Brodiaea minor A. A. Heller 1928-6-28 14657 Butte Butte Meadows Comment
  HSC32394  Brodiaea minor Gary S. Lester 1974-4-20 99 Butte 1 mi. E of Hwy. 99, Skyway Blvd. 61 Comment
  RSA126000  Brodiaea minor E. K. Balls 1957-5-23 22532 Butte US Hwy 99 E, 1.7 mi NW from jct with road from Pentz. 91 Comment
  CAS-BOT-BC486483  Brodiaea sierrae Clarence R. Quick 1964-7-9 64 -66 Butte North of Jarbo Gap Comment
  UC600591  Bromus H. F. Copeland 1932-8-19 Butte se of head of Butte Creek (Jonesville); Jonesville 2100 Comment
  CHSC40289  Bromus alopecuros Lowell Ahart 1985-5-9 4939 Butte Peter Ahart Ranch, about 1 mile north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CAS-BOT-BC149548  Bromus carinatus var. carinatus John Thomas Howell 1967-6-22 42629 Butte Sierra Nevada. Magalia. 701 Comment
  CHSC31732  Bromus catharticus L. Ahart 1979-5-3 1855 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC41172  Bromus diandrus L. P. Janeway; Gary Benson, Randy Harrison 1984-9-10 Butte Plumas N.F. ECOS plot 11-044. Along County road 52515A above Mayaro and N Fk Feather River. 762 Comment
  UC203849  Bromus diandrus A. A. Heller 1914-4-11 11280 Butte 8 mi n of Oroville Comment
  JEPS115956  Bromus hordeaceus Lowell Ahart 2009-4-26 15638 Butte On the west side of Guardians Trail, just south 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
  UC1131072  Bromus hordeaceus C. G. Albertus 1933-6-6 20 Butte 1/4 mi w of Pentz 137 Comment
  CHSC39961  Bromus japonicus L. Ahart; P. Ahart 1983-6-26 4143 Butte Around a meadow along Ponderosa Way (Big Ridge Rd), ca. 1/2 mi s of East Fork Canyon Creek, ca. 13.5 mi ne of Oroville. 550 Comment
  CHSC46436  Bromus japonicus Lowell Ahart 1989-5-29 6316 Butte Along the gravel road to the Forbestown Reservoir, about 1 mile north-east of Forbestown Road, about 2 1/2 miles north-east of Forbestown. 792 Comment
  CAS-BOT-BC162458  Bromus laevipes Lowell Ahart 1977-6-2 1471 Butte Peter Ahart Ranch, Honcut. Along Honcut Creek. 50 Comment
  CHSC87898  Bromus laevipes Lowell Ahart 2004-6-2 10988 Butte Near a small meadow, on the east side of a logging road, on the north side of Forbestown Road, about 200 yards east of the intersection of Black Bart Road and Forbestown Road, about 3 1/4 miles (air) southwest of Forbestown. 752 Comment
  CHSC39774  Bromus madritensis subsp. rubens B. Wilson 1968-3-15 94 Butte 100 yds. n of n Chico Airport entrance on Cohasset Rd. 2 mi ne of Chico. E edge of Rd., Chico. 59 Comment
  CHSC42904  Bromus orcuttianus Lowell Ahart 1987-7-8 5796 Butte Along Big Bar Mountain Road, about 3 miles south-west of Coyote Gap, south-east of Pulga. 1280 Comment
  JEPS106317  Bromus orcuttianus Lowell Ahart 2004-6-22 11123 Butte On the east side of Doe Mill Road, about 1 mile southeast of the bridge across Butte Creek, about 2 1/2 miles (air) southeast of Forest Ranch, about 5 miles (air) southwest of Stirling City 713 Comment
  CHSC88168  Bromus suksdorfii Lowell Ahart 2004-8-2 11333 Butte On both sides of the dirt County Road, between the Sky High Mine and Dresser Camp, about 2 miles (air) southeast of the Philbrook Reservoir Dam, about 7 miles (air) southeast of Butte Meadows. 1912 Comment
  CAS-BOT-BC161500  Bromus tectorum Lowell Ahart 1986-5-20 5279 Butte Near the edge of the road that goes to the Forbestown Reservoir, about 1 mile southwest of the Forbestown Reservoir, about 3.5 miles northeast of Forbestown. 609 Comment
  CAS-BOT-BC18157  Bulbostylis capillaris Lowell Ahart 1988-6-29 6093 Butte Near Bean Creek Road, about 0.5 mile southeast of Little Bald Rock. 975 Comment
  CAS-BOT-BC18158  Bulbostylis capillaris J. D. Jokerst 1980-7-18 994 Butte Top of North Table Mountain, ca. 200 meters northwest of junction of Cherokee Road and the east edge of Table Mountain. Comment
  CHSC107588  Bulbostylis capillaris Lowell Ahart 2011-7-9 17564 Butte Area of almost bare rock, about 1/4 mile east of Little Bald Rock, about 2 miles (air) southeast of Brush creek, about 15 miles (air) northeast of Oroville. 1009 Comment
  JEPS94986  Calamagrostis canadensis Lowell Ahart 1997-7-11 7757 Butte about 4 air mi ne of Stirling City (near the w edge of small bog, e of the dirt road, about 1/4 air mi e of Bald Mountain) 1676 Comment
  CHSC87423  Calandrinia ciliata R. D. Fischer 2004-3-20 113 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located on Guardian Trail, 100' north of Pine Trail junction. 408 Comment
  JEPS117410  Calandrinia ciliata Lowell Ahart 2010-5-14 16659 A 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
  SEINET12331913  Callitriche heterophylla Unknown 1985-1 4946 Butte East branch of Potter Ravine, about 2.25 mi N of Oroville Dam 350 Comment
  JEPS95736  Callitriche heterophylla var. heterophylla Lowell Ahart 1995-5-26 7574 Butte 12 mi S of Oroville (Peter Ahart Ranch, 2 mi N and 1/4 mi E of Honcut) 36 Comment
  CHSC103743  Callitriche marginata Lowell Ahart 2010-5-22 16711 Butte South of the road, about 120 yards east of the fence, about 220 yards east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 379 Comment
  CHSC113110  Callitriche palustris Lowell Ahart 2013-10-26 19215 Butte In shallow water of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. 1681 Comment
  LA6444  Calocedrus decurrens E. B. Copeland; 1931-7-28 sn Butte Jonesville, W of North Willow Creek 1650.0 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
  CHSC50436  Calochortus coeruleus Vernon Oswald 1990-6-14 4293 Butte Logging road (T-line) just southwest of High Rock Ravine, ca. 1.5 miles west of Bald Mtn Lookout. 1304 Comment
  CAS-BOT-BC489975  Calochortus leichtlinii E. B. Copeland 1929-7-17 352 Butte Above Jonesville. 2000 Comment
  CHSC100831  Calochortus luteus Janet Delight 1978-4-23 13 Butte 75 m w of Larkin Rd. at jct of Larkin Rd. and e entrance to Thermalito Afterbay, ca. 14.5 km n of Gridley. 46 Comment
  CAS-BOT-BC491852  Calochortus luteus A. A. Heller 1913-5-25 10760 Butte Near Pents 152 Comment
  POM109677  Calochortus luteus C. C. Bruce 1897-04 2119 Butte Little Chico Comment
  CHSC2240  Calochortus monophyllus M. Roberson 1956-4-7 Butte SW of Paradise, along Skyway. 426 Comment
  CHSC31343  Calochortus monophyllus Herb Allan McLane 1980-4-25 11 Butte 10 ft. e of Ponderosa Way, Plumas National Forest, MDM. 390 Comment
  CHSC67408  Calochortus monophyllus James D. Jokerst; R. A. Schlising 1985-4-8 2214 Butte Serpentine Point W of and adjacent to Hwy. 70 ca. 0.5 mi S of Lunt Rd. 548 Comment
  CHSC81581  Calochortus monophyllus 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
  UC129304  Calochortus monophyllus Miss Kate Conger 1907-1 Butte Brush Creek Comment
  CAS-BOT-BC492598  Calochortus monophyllus Lowell Ahart 1980-5-4 2194 Butte Near Hurleton. Comment
  POM118215  Calochortus monophyllus B. O. Clark 1915-4-12 213 Butte Near Paradise in the Lower Sierra Nevada 600 Comment
  SEINET12046586  Calochortus monophyllus L. L. Pate 1978-1 64 Butte 0.1 mi E of Hwy 32, 9.3 mi E of Chico 439 Comment
  SEINET12048519  Calochortus monophyllus Unknown 1984-1 5 Butte ca 3 mi E from the jct of Honey Run and Humbug roads, N side of road 305 Comment
  UCD139564  Calochortus monophyllus M. Vincent 1961-3-30 6 Butte corner of Harrison and Sterns Roads, Paradise. 609 Comment
  CHSC25014  Calochortus nudus E. B. Copeland 1929-7-21 353 Butte Jonesville. 1550 Comment
  CHSC2465  Calochortus tolmiei P. Delaplane 1965-5-4 52 Butte South side of Concow Road. South side of Lake Concow. 1219 Comment
  CHSC44529  Calochortus tolmiei Lowell Ahart 1988-3-27 5941 Butte Along Poe Power House Road, about 1/10 mile north of the bridge across the North Fork of the Feather River, about 2 miles south-east of Jarbo Gap. 350 Comment
  CHSC46838  Caltha leptosepala var. biflora Kirsten Tarp 1983-7-31 319 Butte Near Humbug Rd. between Butte Creek House and Snag Lake. At border of meadow. 1804 Comment
  CHSC53697  Caltha leptosepala var. biflora Kirsten Tarp 1981-7-19 34 Butte Ca. 24 air miles ne of Chico; in meadow. 1706 Comment
  CHSC97005  Calycadenia multiglandulosa B. Castro; L. P. Janeway 2005-6-5 1481 Butte Ca 6 air mi SE of Chico, in bottom of canyon SE of Neal Rd, ca 100 ft nw of intermittent creek. 85 Comment
  CAS-BOT-BC106080  Calycadenia oppositifolia Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CAS-BOT-BC106122  Calycadenia oppositifolia Lowell Ahart 1988-7-29 6084 Butte North of Swedes Flat Road, about 1 mile east of Oroville Bangor Highway, about 5 miles north of Bangor 304 Comment
  POM196501  Calycadenia oppositifolia A. A. Heller 1926-5-22 13940 Butte Type collected 'near Chico, May 30, 1882, by Dr. C.C. Perry.' Along the Richardson Springs road 3 miles north of Chico Comment
  POM284479  Calycadenia oppositifolia A. A. Heller 1926-5-22 13940 Butte Type collected 'near Chico, May 30, 1882, by Dr. C.C. Perry.' Along the Richardson Springs road 3 miles north of Chico Comment
  UC1971678  Calycadenia oppositifolia 1977-7-5 2027 Butte Skyway Road to Paradise, 0.7 mi W of Paradise 458 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
  CHSC65535  Calycadenia truncata L. P. Janeway 1995-7-14 4853 Butte About 0.5 mi east of the western end of Jackson Ranch Ridge; 0.5 mi south of Road 21N25Y. Top of a steep slope overlooking Frey Creek. 1066 Comment
  UC1971768  Calycadenia truncata R. L. Carr 1986-10-3 2268 Butte 6.6 mi NE of Chico on Hwy 32 (from Hwy 99 jct), very near milepost 17.00 Comment
  CAS-BOT-BC90923  Calycanthus occidentalis A. A. Heller 1915-5-17 11874 Butte Canon [Canyon] of Chico Creek 5 miles east of Chico. Comment
  JEPS127135  Calycanthus occidentalis Lowell Ahart 2016-8-29 21317 Butte On the west side 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. Comment
  POM20569  Calycanthus occidentalis Ione Poe 1923-10-2 s.n. Butte Molinos River, near Chico. 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
  UC600771  Calystegia malacophylla subsp. malacophylla H. F. Copeland 1920-7-6 339 Butte Jonesville woods Jonesville Comment
  JEPS95023  Calystegia occidentalis subsp. occidentalis Lowell Ahart 1997-7-11 7751 Butte about 2 air mi ne of Stirling City (s side of dirt road, se of Cold Creek, about 2 air mi sw of Bald Mountain, about 9 mi by road from Stirling City) 1219 Comment
  CAS-BOT-BC496964  Camassia leichtlinii subsp. suksdorfii A. A. Heller 1915-6-11 11959 Butte Butte Meadows in Sierra Nevada, in the yellow pine belt 1219 Comment
  POM31997  Camissonia contorta Copeland 1903-4-10 3033 Butte Chico. Comment
  SEINET10462927  Campanula prenanthoides Conger 1907-1 CONGER s.n. Butte BRUSH CREEK Comment
  CHSC61304  Campanula scouleri Lowell Ahart 1993-7-23 7110 Butte On the sides of a small 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 northeast of Feather Falls. 1036 Comment
  CHSC20545  Campsis radicans M. S. Taylor 1975-6-30 823 Butte 1456 Arcadian, Chico. Comment
  CHSC113235  Capsella bursa-pastoris Lowell Ahart 2014-4-26 19418 Butte Sides of a cleaned ditch, on the south side of Butte City Highway (Highway 162), collected from the railroad to the east about 200 yards, east of the Rice Experimental Station. 30 Comment
  CHSC26512  Capsella bursa-pastoris P. Moyer 1972-3-4 109 Butte CSUC Campus. 1st and 2nd on Ivy, w side. 60 Comment
  JEPS120952  Capsella bursa-pastoris Lowell Ahart 2013-4-20 18556 Butte Corral at the barn, about 1/4 mile N of Honcut Cemetery, about 3.25 air miles NE of Honcut. Comment
  CHSC33220  Cardamine breweri R. A. Schlising 1981-6-11 4072 Butte N of Butte Meadows in region of Cherry Hill. North of Butte Creek and west of Humboldt Road. Comment
  CHSC28758  Cardamine californica J. D. Jokerst 1979-2-25 168 Butte N. bank of Rock Cr., 100 met. N. of the intersection of Rock Cr. Rd. and Cohasset Hwy. Comment
  CHSC3653  Cardamine californica Robert D. Briggs 1966-3-16 R- 72 Butte 8 miles due north of Downtown Chico. Comment
  POM95602  Cardamine pensylvanica C. C. Bruce 1897-05 2064 Butte Little Chico Comment
  CHSC106866  Carduus pycnocephalus Lowell Ahart 2011-5-1 17333 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
  CHSC54088  Carduus pycnocephalus Vernon H. Oswald; Lowell Ahart 1991-5-13 4587 Butte Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East (opposite the spillway). 137 Comment
  CHSC113283  Carduus pycnocephalus subsp. pycnocephalus Lowell Ahart 2014-4-9 19333 Butte West edge of Pennington Road, at the intersection of Pennington Road and Colusa Highway, about 6 miles west of Gridley. 22 Comment
  SEINET10935491  Carex Mary Susan Taylor 1981-5-6 Taylor 3626 Butte T21N R7E sw sec 30, Forbestown quad. W side of rd leading to Jackson Ranch, ca. 5 air mi N of Feather Falls. Yellow Pine Forest; 3700 ft. 1128 Comment
  CAS-BOT-BC17810  Carex amplifolia Lowell Ahart 1981-9-21 3195 Butte Sierra Nevada. Along French Creek. 1300 Comment
  JEPS110198  Carex amplifolia Lowell Ahart 2006-7-16 12968 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
  JEPS116030  Carex amplifolia Lowell Ahart 2009-6-30 15974 Butte On the bottom of a deep ditch, on the east side 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
  UCD140080  Carex amplifolia L. P. Janeway 1988-6-16 2793 Butte West Br Butte Creek near Lomo; 0.1 mile from Humboldt Road along Cedar Loop Road. 1158 Comment
  CHSC53713  Carex angustata L. P. Janeway 1987-6-27 2346 Butte Meadow just east of Keyser Cr; 4.3 mi N of Ramsey Bar along the Concow Rd. 1478 Comment
  CHSC113504  Carex aurea Lowell Ahart 2014-7-16 19677 Butte North part of a large wet meadow (some bog), about 50 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CHSC44691  Carex aurea L. P. Janeway; R. A. Schlising, B. Castro 1988-7-23 3085 Butte Along Scotts John Cr 2.7 mi N of the Butte Cr rd. 1920 Comment
  CAS-BOT-BC19202  Carex barbarae John Thomas Howell 1955-9-6 30908 Butte Bank of Butte Creek east of Butt City. Comment
  SEINET10653008  Carex barbarae Lewis S. Rose 1939-6-5 Rose 39199 Butte Honcut. 30 Comment
  CHSC103133  Carex bolanderi Lowell Ahart 2009-5-30 15790 Butte Along a small stream about 20 yards south of the fence and about 100 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. 269 Comment
  CHSC104847  Carex bolanderi Lowell Ahart 2010-6-12 16796 Butte Along the north side of a small stream, about 150 yards east of Ten Mile House Road, about 3/4mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. 238 Comment
  CHSC52274  Carex bolanderi L. P. Janeway 1988-7-2 2951 Butte Marsh/meadow at upper reach of Brush Creek, ca 1.5 mi S of 'town' of Brush Creek. 952 Comment
  CHSC95226  Carex bolanderi L. P. Janeway 2006-8-6 8827 Butte Northern High Sierra Nevada. Near road along west side of lower Pinkard Creek, 1.2 mi north of Lost Creek Reservoir dam. 1021 Comment
  CHSC52848  Carex brainerdii L. P. Janeway 1986-9-1 1819 Butte N side of Philbrook Reservoir at main PG and E campground. 1691 Comment
  JEPS94721  Carex cyrtostachya Lowell Ahart 1998-7-19 8052 Butte about 3/4 mi nw of Lost Creek Dam (about 1/2 mi nw of the Lost Creek Reservoir, on n side of the dirt road) 1021 Comment
  CAS-BOT-BC34952  Carex densa J. D. Jokerst 1985-5-11 2325 Butte Ca. 0.5 mile south of Bax Hall Flat, 1 mile east of Potter Ravine, immediately north of Lake Oroville. Comment
  CHSC52851  Carex densa L. P. Janeway 1987-5-7 2025 Butte Edge of Cottonwood Rd 2.2 mi W of Table Mtn Rd at Cottonwood Cr. 48 Comment
  CHSC104835  Carex feta Lowell Ahart 2010-6-25 16839 Butte West of the lone oak tree, about 80 yards west of the improved parking area, cattle chute and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 406 Comment
  UC825096  Carex feta A. A. Heller 1913-6-4 10781 Butte n Oroville; Table Mountain Olive Ranch Comment
  CAS-BOT-BC65490  Carex feta L. P. Janeway 1995-7-16 4860 Butte 0.8 mi NW of Oak Point; 0.8 mi E of Transfer Ridge; east side of Breakneck Canyon; 1.5 mi N of Kimshew Creek. 1402 Comment
  UCD140309  Carex feta L. P. Janeway 1988-6-14 2783 Butte upper reaches of Haw Creek, 1.75 air miles SE of Lomo. 1226 Comment
  CHSC94295  Carex fracta Lowell Ahart 2006-7-25 13068 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-BC21239  Carex fracta L. P. Janeway 1988-6-25 2862 Butte The Carices of Butte County. Near Coon Creek and near Bull Hill Road 1.0 mile from Skyway. 1554 Comment
  UCD140346  Carex fracta L. P. Janeway 1987-6-26 2296 Butte Rag Dump, Fall Creek. 1173 Comment
  RSA739648  Carex geyeri L. P. Janeway, Linus Gog 2008-7-18 9435 Butte Butte County: High Cascade Range along Humbug Summit road, above the Cornelia Lott Sank Memorial Spring (which feeds W branch Feather River) 1536 Comment
  CHSC48079  Carex gracilior L. P. Janeway 1989-5-13 3237 Butte Along creek NW of Concow Reservoir and on the W side of Rocky Ridge; E below the Concow Rd 8.3 mi N of Hwy 70. 822 Comment
  RSA726774  Carex gracilior L. Ahart 2007-4-16 13675 Butte Peter Ahart Ranch about 1 1/2 miles north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville. 52 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
  SEINET4286137 Image available Carex hoodii L. Janeway, Gog, L 2008-1 3194 B Butte Just east of Philbrook Resevoir. Comment
  JEPS121019  Carex inversa Peter F. Zika 2010-5-16 24827 Butte Baldwin Avenue near Spencer Avenue, Oroville Comment
  CAS-BOT-BC7782  Carex laeviculmis Clarence Roy Quick 1963-7-16 63 50 b Butte Feather River Canyon. Section Corner Meadow, east of Pulga. 1463 Comment
  SEINET4286001 Image available Carex laeviculmis L. Janeway, Gog, L 2008-1 3189 A Butte Near Cornelia Lott Sank Memorial Spring. Comment
  SEINET8068006 Image available Carex laeviculmis L. Janeway, Gog, L 2008-1 3189 B Butte Near Cornelia Lott San Memorial Spring. Comment
  CAS-BOT-BC278763  Carex lemmonii Peter F. Zika 2011-7-6 25531 Butte Mooreville Ridge Road, 0.4 road miles N of dam on Lost Creek Reservoir, northern Sierra Nevada Highlands (n SNH) 1025 Comment
  CHSC61341  Carex lemmonii Lowell Ahart 1993-7-31 7137 Butte Edge of a large bog, on the north side of the dirt road to Big Kimshew Creek, about 1 1/2 miles south-east of Bald Mountain, north-east of Stirling City. 1493 Comment
  CHSC61510  Carex lemmonii Lowell Ahart 1993-6-26 7007 Butte Small meadow, on the south side of the dirt road, about 1/4 mile west of the Lost Creek Reservoir. 1036 Comment
  LA17618  Carex lemmonii E. B. Copeland; 1929-7-5 610 Butte Jonesville 1500.0 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
  JEPS105277  Carex luzulina var. ablata Dean W. Taylor 1995-8-6 15393 Butte ca. 5 air miles NE of Stirling City; boggy meadow 0.5 miles E of Bald Mtn summit; Lassen National Forest 1219 Comment
  CAS-BOT-BC32159  Carex multicaulis L. P. Janeway 1987-5-10 2054 Butte Stirling City quad, above the road near the bridge over West Branch Feather River 754 Comment
  SEINET10971821  Carex multicaulis Mary Susan Taylor 1981-5-13 Taylor 3696 Butte 4500 ft. T23N R6E se sec 32, Pulga SE quad. In decomposed granite on E side of 23N15.5, ca. 1 mi S of its jct with Four Trees Rd, ca. 8 air mi E of Pulga and 0.5 mi W of Oroville-Quincy Hwy. 1372 Comment
  SEINET10752877  Carex multicostata Vernon H. Oswald, Lowell Ahart 1988-7-26 Oswald 3630 Butte Snopw Mt. region located ca. 6 air mi SE of Jonesville. Comment
  CHSC52258  Carex nebrascensis L. P. Janeway; R. A. Schlising, B. Castro, Pauleen Broyles 1987-7-19 2490 Butte Meadow along Humbug Summit Rd ca 5 1/2 mi N of Inskip, at the Cornelia Lott Sank Memorial Spring. 1539 Comment
  CHSC52263  Carex nebrascensis L. P. Janeway; C. A. Janeway 1986-9-13 1853 Butte Along Humbug Road at Cold Springs (vicinity of Humbug Summit). Small meadow around watering trough. 1965 Comment
  CAS-BOT-BC119722  Carex nervina L. P. Janeway; Robert A. Schlising 1988-7-1 2930 Butte Jonesville quad. Meadow between two lakes at SE-most headwaters of Butte Creek. 1935 Comment
  CHSC84720  Carex nudata L. P. Janeway 2003-5-11 7783 Butte High Cascade Range. Along west edge of Butte Creek, 700 m south-southwest of the Ponderosa Way bridge (Forks of Butte); just upstream of the diversion structure. 588 Comment
  UCD140554  Carex pendula Peter F. Zika 2010-5-16 24824 Butte both sides of channel and bridge, junction of Breslauer Avenue and Lone Pine Avenue, SW of Chico. W of Janeway's Station. Sacramento Valley. 45 Comment
  CHSC111957  Carex praegracilis Lowell Ahart 2012-5-23 18108 Butte Along the horse trail, north ofTable 32, aabout 50 yards south of Vallombrosa Avenue, southwest of Crister Ave., Lower Bidwell Park, Chico. 70 Comment
  CHSC44994  Carex simulata S. C. Morey 1983-7-23 580 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CDA13295  Carex stipata var. stipata G. F. Hrusa, T. D. Wilfred 1996-7-9 13143 Butte Plumas National Forest; Jordan Creek, above waterfall nr. confluence with Marble Creek. S of Hwy 162 near Roger's Cow Camp. Comment
  CHSC52872  Carex straminiformis L. P. Janeway; R. A. Schlising 1988-7-1 2916 Butte On the NE-facing flank of Snow Mtn and above Summit Lake. 2011 Comment
  CAS-BOT-BC116747  Carex subfusca R. Tallent 1987-8-18 956 Butte Lassen National Forest. Along Feather River N of Stirling City. 1036 Comment
  CHSC83266  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
  SEINET10467124  Carex subfusca Mary Susan Taylor 1978-7-21 Taylor 1812 Butte On S side of Oroville-Quincy Hwy, along creek and in meadow, ca. 14 mi N of Lake Madrone, ca. 24 mi NE of Oroville; Yellow Pine Forest. 1463 Comment
  SEINET10750064  Carex subfusca Mary Susan Taylor 1978-7-19 Taylor 1748 Butte Cherry Hill Campground, on S side of Old Humboldt Road, ca. 2 mi SW of Jonesville. 1524 Comment
  SEINET10912835  Carex subfusca Lawrence P. Janeway, C. A. Janeway 1986-9-13 Janeway 1846 Butte T26N, R5E, Jonesville quad (15') SE 1/4 of sec. 16. Just E of Scotts John Cr. above the Humboldt-to-Humbug road (rd 26N27). 1737 Comment
  CHSC52238  Carex utriculata L. P. Janeway 1987-6-26 2326 Butte Meadow just NW of Logue Meadows along the road to Lynch Meadows. 1325 Comment
  CHSC45067  Carex vesicaria Vernon Oswald 1987-6-23 3020 Butte High Lakes Rd. 4.8 mi (odometer) n of Philbrook Rd. 1889 Comment
  SEINET6331714 Image available Carex vesicaria H. F. Copeland 1932-8-19 s.n. Butte vicinity of Jonesville, Lassen National Forest Comment
  CHSC98986  Carex vulpinoidea Lowell Ahart 2008-6-2 14805 Butte Below the high water line of Lake Oroville, on the north side of the South Fork of the Feather River, about 50 yards east of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 243 Comment
  HSC103679  Carex xerophila L. P. Janeway 2006-5-14 8595 Butte Northern High Sierra Nevada. 'Magalia Serpentine', east side of Coutolenc Road, between that road and the first bend in the road down to the 'Magalia 73 Dam'. 707 Comment
  HSC38034  Castilleja applegatei Thomas W. Nelson, Jane P. Nelson 1976-5-10 2487 Butte Just E of Magalia Comment
  CAS-BOT-BC249587  Castilleja applegatei subsp. pinetorum J. F. Emmel 1970-4-5 255 Butte Along Ponderosa Way, ca. 1.5 miles ENE of jct. with Cohasset Highway Comment
  CAS-BOT-BC249598  Castilleja applegatei subsp. pinetorum F. N. Bassett 1923-6-16 s.n. Butte Jonesville Comment
  CHSC39267  Castilleja applegatei subsp. pinetorum Lowell Ahart 1983-6-30 4177 Butte About 1 1/2 miles north-east of Concow Res. Section 1. 550 Comment
  CHSC44355  Castilleja applegatei subsp. pinetorum Lowell Ahart 1988-5-1 5978 a Butte Along the North Fork of the Feather River, a little north of the Poe Power House, about 2 miles south-east of Jarbo Gap. 280 Comment
  JEPS15597  Castilleja applegatei subsp. pinetorum Rimo Bacigalupi with Richard Hauke and Geo. Bacigalupi Jr. 1954-7-15 4723 Butte 0.5 mi below Nimshew (on Nimshew (Humbug) Road, along sides of Butte Canyon); Butte Canyon 701 Comment
  UC885465  Castilleja applegatei subsp. pinetorum A. A. Heller 1917-7-26 12737 Butte Butte Meadows 1280 Comment
  CAS-BOT-BC255458  Castilleja applegatei var. pinetorum F. W. Pennell; A. A. Heller 1940-6-5 25692 Butte Along Feather River above Pulga, Route 24 487 Comment
  UC138957  Castilleja attenuata E. B. Copeland 1903-4-10 3040 Butte Chico Comment
  CHSC24845  Castilleja exserta T. L. Reynolds 1976-4-25 67 Butte Ca. 20 yds ne of Manzanita Ave and ca. 200 yds se of Chico Creek, .3 mi se of Hooker Oak. 59 Comment
  CHSC3318  Castilleja exserta M. Gregg 1966-3-28 54 Butte On Cherokee Rd. to the top of Table Mt. north of Oroville. Comment
  JEPS119784  Castilleja exserta subsp. exserta Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18015 Butte South of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  CHSC4255  Castilleja lacera J. E. Bowlin 1967-4-14 32 Butte 3.4 mi. E of corner of Keefer Rd. and Cohasset, Chico. Comment
  CHSC61180  Castilleja lacera Vernon H. Oswald 1993-5-18 5399 Butte Middle Butte Creek Trail on the W side of the creek and on the upstream side of Ponderosa Way, ca. 2.25 mi (air) NW of Magalia. 707 Comment
  CHSC62130  Castilleja rubicundula subsp. rubicundula B. Castro; R. A. Schlising 1986-5-6 50 a Butte Ca 7 air mi N of Chico in a pasture on NW side of Meridian Road ca 0.2 mi E of its jcn with Hwy 99. 56 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
  UC1594630  Castilleja tenuis Lowell Ahart 1992-7-29 6883 Butte about 0.75 mi nw Lotts Lake (about 1 mi ne of the Carr Mine) 1798 Comment
  CHSC27266  Catalpa speciosa P. Moyer 1971-10-1 23 Butte CSUC campus. 50 ft. w of Esplanade Bridge, n side of Big Chico Ck. 60 Comment
  CAS-BOT-BC56923  Ceanothus Carl B. Wolf 1941-7-23 11049 Butte Northern Sierra Nevada. 5 mi. below Magalia on Oroville Road 609 Comment
  RSA129723  Ceanothus cordulatus P. L. Johannsen 1936-7-17 934 Butte 2.5 miles SSE of Butte Meadow, Pymes Creek. 1555 Comment
  CAS-BOT-BC49179  Ceanothus cuneatus Lewis S. Rose 1931-3-28 s.n. Butte Oroville Comment
  CHSC77439  Ceanothus cuneatus var. cuneatus Tim Stofer 1997-4-13 11 Butte This bush was located on the west side of the trail 100 ft. from the head of the South Rim Trail off South Park Dr. in upper Bidwell Park. 76 Comment
  CAS-BOT-BC50776  Ceanothus integerrimus Lewis S. Rose 1968-6-12 68112 Butte Feather River Canyon - Pulga 487 Comment
  CHSC107097  Ceanothus integerrimus M. Mitchell 2010-4-12 Butte Green Gate @ Highway 32. 421 Comment
  CHSC1508  Ceanothus integerrimus var. macrothyrsus M. Roberson 1956-5-2 Butte SW of Paradise, along Skyway. 426 Comment
  CHSC1509  Ceanothus integerrimus var. macrothyrsus L. Stone 1930-3-30 Butte Near Forest Ranch. 548 Comment
  CHSC40342  Ceanothus integerrimus var. macrothyrsus Lowell Ahart 1985-3-4 4844 Butte Near the edge of Kunkle Res., about 2 miles south of Paradise. 550 Comment
  RSA1122  Ceanothus integerrimus var. puberulus B. D. Stark 1929-7-26 1395 Butte Paradise. Comment
  CHSC44132  Ceanothus prostratus V. Oswald; L. Ahart 1988-7-29 3637 Butte Ca. 5 mi (air) se of Jonesville on the n edge of the ridge running eastwards from the peak of Snow Mtn. 2103 Comment
  RSA300948  Ceanothus prostratus D. C. Michener 1982-7-28 4140 Butte Along 32, 3.5 miles NE of Forest Ranch (at Nopel road), Yellow pine forest Comment
  SEINET5547651  Ceanothus prostratus H. S. Gentry, S. Koch 1962-1 19766 Butte Cohasset. 914 Comment
  CAS-BOT-BC277028  Centaurea maculosa T. C. Fuller 1971-8-18 19925 Butte North side of overlook parking lot, Oroville Dam, 7 mi. east of Oroville 289 Comment
  CHSC107900  Centaurea melitensis L. P. Janeway 2011-6-29 10413 Butte Northern High Sierra Nevada. Along Encino Grande (Ponderosa Way) 1.0 road km west of the top of Bloomer Hill; 0.7 air km west-northwest of the top of Bloomer Hill. 820 Comment
  CHSC38333  Centaurea melitensis Vernon Oswald 1983-5-30 574 Butte Upper Bidwell Park, Chico, on the north rim ca. 1600 ft e of the power lines. 274 Comment
  SEINET3375646  Centaurea solstitialis C. Lumer, S. Yost 2006-8-1 2454 Butte Chico, California. Near Motel 6. 91 Comment
  JEPS107528  Centaurium muehlenbergii Lowell 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 5 miles west of Oroville Quincy Highway 733 Comment
  JEPS98615  Centaurium venustum Lowell Ahart 2000-6-27 8509 Butte Big Bald Rock, about 3 miles (air) east of madrone Lake, about 12 miles (air) northeast of Oroville. 993 Comment
  CHSC38653  Cephalanthus occidentalis var. californicus Vernon Oswald 1983-6-20 717 Butte Upper Bidwell Park, Chico, 0.2 mi E of the end of the pavement on Upper Bidwell Rd. 91 Comment
  CHSC44485  Cerastium glomeratum Lowell Ahart 1988-3-28 5947 Butte 1/10 mile south of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles east of Feather Falls. 1280 Comment
  CAS-BOT-BC388268  Cerastium glomeratum Robert Kehlor 1951-5-6 46 Butte J. M. Kehlor ranch, 6 1/4 miles east of Oroville Comment
  CHSC108979  Ceratophyllum demersum Lowell Ahart 2012-4-30 17927 Butte In shallow water in the pond, under trees, about 5 yards south of the table at the old homestead, about 70 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
  CHSC45906  Cercis occidentalis Lowell Ahart 1973-3-26 185 Butte Growing along North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC90504  Cercis occidentalis Suzanne Peters 1988-3-22 22 Butte S side of Butte Creek, vic. Covered Bridge, ca. 7 mi ese of Chico. 121 Comment
  POM28570  Cercis occidentalis C. C. Bruce 1897-05 1815 Butte Little Chico. Comment
  SD116545  Cercis occidentalis Barbara Ertter, Jeffrey Strachan and Lowell Ahart 1980-5-8 3318 Butte North Honcut Creek on Peter Ahart Ranch, 2.5 miles northeast of Honcut between Marysville and Oroville. 46 Comment
  UC2026865  Cercis occidentalis Lowell Ahart 2012-6-28 18236 Butte On the northeast edge of Sycamore Pool, Lower Bidwell Park, Chico. Comment
  POM89488  Cercocarpus betuloides C. C. Bruce 1897-04 1817 Butte Big Chico Comment
  CHSC3221  Chamaecyparis lawsoniana Virginia Hagaman 1966-3-5 47 Butte Lower Bidwell Park. Comment
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Jul 25 2018
  UC1565641  Chamaemelum fuscatum Lowell Ahart 1989-3-20 6193 Butte about 13 mi s of Oroville (about 3 mi w of Honcut, w of intersection of Highway 70 and Lower Honcut Road) 30 Comment
  UCD126572  Chamaesaracha nana E. B. Copeland 1929-7-16 396 Butte Jonesville. 1550 Comment
  CHSC47428  Chamaesyce maculata Lowell Ahart 1974-6-3 472 Butte In a garden, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC113532  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 2014-9-23 19877 Butte Near a small drainage, 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. 88 Comment
  UC1563272  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 1990-10-21 6637 Butte 1/2 mi W of Gold Flat (Lake Oroville, about 1 mi N of Nelson Bar Road) 213 Comment
  UC204565  Chamaesyce serpyllifolia A. A. Heller 1914-8-11 11674 Butte w Chico; Sacramento River Comment
  CHSC25279  Cheilanthes cooperae K. R. Stern 1977-1-15 Butte Along branch of Feather River, n of Limesaddle. Comment
  CAS-BOT-BC66363  Cheilanthes covillei Lowell Ahart 1978-4-19 s.n. Butte Along trail to Feather Falls 650 Comment
  JEPS113223  Cheilanthes gracillima Lowell Ahart 2007-5-29 13931 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
  CHSC43256  Chenopodium album Lowell Ahart 1987-10-22 5923 Butte Along a drain ditch, along Oroville Chico Highway (149), 1/10 mile northwest of Highway 70. 76 Comment
  JEPS108993  Chenopodium botrys Lowell Ahart 2006-10-8 13438 Butte Near a large gravel bar, east side of the North Fork of the Feather River, just east of where the river flows into a pool, on the west side of Highway 70, about 1/2 mile north of the Cresta Power House 609 Comment
  SEINET9340404  Chenopodium desiccatum Unknown 2007-10-7 13065 Butte Northern Sacramento Valley Comment
  CHSC102985  Chenopodium strictum var. glaucophyllum Lowell Ahart 2009-8-13 16281 Butte At the south end of the cement barrier that controls the waster flow into Mud Creek, the north part of the diversion structure that controls Mud Creek diversion and Lindo Channel, northeast of Hooker Oak, Upper Bidwell Park, Chico. 68 Comment
  JEPS120022  Chenopodium strictum var. glaucophyllum Lowell Ahart 2012-10-28 18528 Butte About 50 yards east of the freeway, northwest of Table 2, Lower Bidwell Park, Chico. Comment
  CHSC58910  Chimaphila menziesii Lowell Ahart 1992-7-29 6893 Butte About 1 mile east of the Carr Mine, about 1/2 mile north-west of Lotts Lake. 1828 Comment
  SEINET10449193  Chimaphila menziesii Mary Susan Taylor 1977-8-17 Taylor 1482 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
  JEPS50844  Chlorogalum angustifolium Glen Keator 1967-5-20 GV 1 Butte 7 mi s Oroville Comment
  CAS-BOT-BC498627  Chlorogalum angustifolium H. M. Hall 1917-5-13 10302 Butte Plains west of Pennington Comment
  POM110261  Chlorogalum angustifolium C. C. Bruce 1897-04 1838 Butte [No locality information provided] Comment
  CHSC102377  Chlorogalum pomeridianum var. pomeridianum Lowell Ahart 2009-6-19 15946 Butte On the west 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
  CHSC35690  Chorizanthe polygonoides var. polygonoides J. D. Jokerst 1982-4-14 1529 Butte Butte College Campus 500 meters due N of junction of Pentz and Clark Roads. Comment
  CHSC84285  Chorizanthe stellulata Lowell Ahart; John Dittes, Josephine Guardino, Steve Green 2003-5-27 10218 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
  CHSC9140  Chorizanthe stellulata M. P. Coffeen 1970-4-21 20 Butte 7 mi. up Skyway off Hwy. 99 E. About 50 ft. off rd. to the north on a dry rocky shelf. 396 Comment
  CAS-BOT-BC284378  Cirsium arvense J. R. Keck; E. H. Remmers 1974-9-4 s.n. Butte 0.2 mile north of Pinkard Creek inlet to Lost Creek Reservoir, N.E. of Clipper Mills Comment
  SEINET10971148  Cirsium coulteri Mary Susan Taylor 1975-6-30 Taylor 821 Butte Ca. 1/4 mi W of Cohasset Hwy, ca. 400 yds N of Greenwood Store, Cohasset; Yellow Pine Forest. 853 Comment
  CAS-BOT-BC278079  Cirsium douglasii var. breweri H. F. Copeland 1920-8-12 128 Butte Jonesville 1219 Comment
  CAS-BOT-BC285725  Cirsium vulgare Lowell Ahart 1981-7-26 3010 Butte Gray Lodge, southwest of Gridley 35 Comment
  CAS-BOT-BC228752  Cistanthe umbellata A. A. Heller 1914-6-24 11512 Butte West side of the Sierra Nevada at West Branch 1036 Comment
  UCD13205  Clarkia affinis Charles Martin 1986-4-26 13 Butte Sutter Buttes, canyon SE of North Butte. 182 Comment
  CHSC99307  Clarkia biloba subsp. brandegeeae Lowell Ahart 2008-5-21 14789 Butte Below the high water line of Lake Oroville, on the steep east side of Sucker Creek, about 100 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 258 Comment
  CAS-BOT-BC164137  Clarkia concinna Lowell Ahart 1980-5-25 2341 Butte Along Ponderosa Way 600 Comment
  JEPS102237  Clarkia gracilis subsp. albicaulis Samantha Hillaire 2001-5-16 Butte 0.3 mi SE of Big Chico Creek (vicinity of Ponderosa Way, on a steep roadcut of a little-used road, above and below the road) 353 Comment
  RSA108396  Clarkia gracilis subsp. albicaulis Harlan Lewis, M. Roberts 1951-5-19 830 Butte Road from Nimshew to Butte Creek Canyon, 2.3 miles above bridge across Big Butte Creek. Comment
  CHSC84858  Clarkia gracilis subsp. gracilis L. P. Janeway 2003-5-24 7795 Butte Northern Sierra Nevada Foothills. Along dirt road to 'Power-house' on the south side of the east end of Thermalito Diversion Pool (Feather River); 670 m southwest of the base of Oroville Dam. Road cut. 82 Comment
  CAS-BOT-BC163260  Clarkia mildrediae subsp. lutescens L. P. Janeway 1993-7-1 4413 Butte Along French Creek Road 4.1 mi from Stanwood Saddle and Oroville-Quincy Hwy. 801 Comment
  CHSC37427  Clarkia mildrediae subsp. lutescens R. A. Schlising; K. Tarp 1982-7-28 4358 Butte SE of Pulga and S of Coyote Gap Station on road crossing Last Chance Creek. Roadside. 777 Comment
  CHSC92946  Clarkia mildrediae subsp. lutescens L. P. Janeway; B. Castro, David Toren 2005-7-20 8500 Butte Northern High Sierra Nevada. Along Pine Cluster Ranch Road 1.1 km east of Concow Road; about 2.2 km northeast of upper end of Concow Reservoir. 677 Comment
  CHSC44635  Clarkia mildrediae subsp. mildrediae Lowell Ahart 1988-6-21 6051 Butte Near the North Fork of the Feather River, at the Poe Power House, about 2 miles south-east of Jarbo Gap. 277 Comment
  CHSC71157  Clarkia mildrediae subsp. mildrediae L. P. Janeway 1993-7-16 4391 Butte Southeast side of North Fork Feather River; along Hwy 70 0.4 mi north of Cresta Powerhouse. Road cutbank. 457 Comment
  JEPS104270  Clarkia mosquinii Lowell Ahart 2003-6-30 10327 Butte Near the small stream, on the w side of Ponderosa Way, ca 2 mi (by road) sw of the Ponderosa Dam, ca 2 mi (air) nw of Forbestown. 490 Comment
  RSA0059909  Clarkia mosquinii L. Ahart 1984-6-8 4663 Butte At the Ponderosa Dam, ca. 2 mi NW of Forbestown. 370 Comment
  CAS-BOT-BC172529  Clarkia purpurea subsp. purpurea A. A. Heller 1912-5-23 10749 Butte Table Mountains Olive Ranch north of Oroville Comment
  RSA712756  Clarkia purpurea subsp. purpurea L. P. Janeway 2005-5-17 8393 Butte Sacramento Valley; 0.5 km west of Larkin Road, 1.7 km south of Hwy 162, about 0.5 km northeast of Thermalito Afterbay 43 Comment
  CAS-BOT-BC163648  Clarkia purpurea subsp. quadrivulnera Mrs. J. H. Morrison 1932-5-1 s.n. Butte Durham Comment
  UCD104933  Clarkia purpurea subsp. quadrivulnera L. D. Gottlieb 1987-8-22 8753 Butte On Centerville Road, 1.8 miles S of Nimshew Road. Comment
  CAS-BOT-BC164793  Clarkia rhomboidea Lowell Ahart 1984-5-28 4651 Butte Along Old Highway 40, now Dark Canyon Road, about 2 miles east of Old Yankee Hill, about 16 miles north-east of Oroville 450 Comment
  CAS-BOT-BC164799  Clarkia rhomboidea L. P. Janeway 1991-6-1 3982 Butte West-facing cut-bank of Dark Canyon Road 1.45 mi south of Big Bend Road/Parkhill 472 Comment
  POM196082  Claytonia palustris H. F. Copeland 1929-6-9 s.n. Butte Jonesville. 1524 Comment
  SD8155  Claytonia palustris Mrs. R. M. Austin 1883-1 Butte Butte County Comment
  CHSC34702  Claytonia parviflora subsp. parviflora M. S. Taylor 1981-5-7 3631 Butte Along Sucker Creek, on e side of Bridge, ca. 4 air mi sw of Feather Falls, on moist mossy boulder in shade. 304 Comment
  CAS-BOT-BC439432  Claytonia parviflora subsp. parviflora A. A. Heller 1927-4-26 s.n. Butte In Bidwell Park east of Chico Comment
  CHSC92572  Claytonia perfoliata subsp. perfoliata L. P. Janeway 2005-3-1 8342 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Road 1.8 km northeast of Bruce Road. 134 Comment
  CHSC52816  Clematis ligusticifolia Robert Schlising; M. Banchero, R. Banchero 1979-10-13 3498 Butte Along Sacramento River w of Chico, at slough at end of Sacramento Avenue. Comment
  CAS-BOT-BC499273  Clintonia uniflora V. Oswald; L. Ahart 1988-6-17 3401 Butte West side of Pinkard Creek, 1 mile north of Lost Creek Reservoir 1028 Comment
  CHSC9260  Collinsia sparsiflora D. C. Burns 1971-4-2 114 Butte Ca. 30 yds. s side of Cohasset rd., ca. 4.0 mi w of the intersection of Cohasset rd. and Vilas rd. 304 Comment
  CHSC109118  Collinsia sparsiflora var. collina Lowell Ahart 2012-3-23 17784 Butte On the sides of the trail down to Big Chico Creek, about 50 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. 215 Comment
  CHSC82275  Collinsia sparsiflora var. collina J. Marr 1988-3-19 12 Butte 2.5 mi WNW of Cherokee Rd on Table Mtn, 6 mi N of Oroville. 304 Comment
  CHSC12750  Collinsia tinctoria M. S. Taylor 1974-5-19 254 Butte Ca. 10 ft s of Upper Bidwell Park Rd, in vicinity of Devils Kitchen, Chico. Comment
  SD3873  Collomia grandiflora E. B. Copeland 1931-7-14 Butte Jonesville 1550 Comment
  RSA409228  Collomia heterophylla M. M. Boney 1897-1 1724 Butte [No locality information provided] Comment
  CHSC101164  Collomia tinctoria Lowell Ahart 2009-5-15 15716 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
  UC116644  Comandra Mrs. R. M. Austin May 1896 298 Butte Little Chico Creek Comment
  CHSC31656  Convolvulus arvensis L. Ahart 1978-7-15 1784 Butte Peter Ahart Ranch, Honcut. On dry bare soil near the garden. 50 Comment
  CHSC39639  Convolvulus arvensis Tom Hughes 1982-7-20 30 Butte Chico, North East corner of Shasta ave and Esplinade intersection. Comment
  CHSC440  Convolvulus arvensis E. Lusk 1949-5-30 Butte Lindo Channel near Chico. 57 Comment
  NY643134  Convolvulus arvensis H. M. Edwards 06 1917 s.n. Butte Comment
  SEINET5766733 Image available Corallorhiza maculata Marion Ownbey, Ruth P. Ownbey 1938-1 1732 Butte Under Abies, Humboldt Summit above Jonesville, Butte County, alt. 6650ft. 2027 Comment
  CAS-BOT-BC237927  Cordylanthus Lowell Ahart 1980-7-29 2495 Butte Along Hurleton Swedes Flat Road 600 Comment
  RSA412331  Cordylanthus pilosus subsp. pilosus H. F. Copeland 1928-8-14 382 Butte Neighborhood of Jonesville. 1829 Comment
  CHSC84456  Cordylanthus pilosus subsp. trifidus Lowell Ahart 2003-8-3 10467 Butte On the west side of North Honcut Creek, about 2 1/2 miles north and 2 2/3 miles east of Honcut, about 12 miles (air) southeast of Oroville. 52 Comment
  JEPS102542  Coriandrum sativum Lowell Ahart 2001-5-10 8742 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. 22 Comment
  SEINET12137282  Cornus nuttallii T. R. Norton 1977-1 11 Butte ca 6.5 NE of Paradise, 1.5 mi N of Magalia, 0.5 mi N of Magalia Reservoir, 0.25 mi E of the Skyway Comment
  CHSC11947  Cornus sericea subsp. sericea E. B. Copeland 1930-6-25 431 Butte Jonesville. Along creek. 1500 Comment
  CHSC94162  Coronilla varia Lowell 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. 1113 Comment
  JEPS106219  Coronilla varia Lowell Ahart 2004-6-22 11121 Butte On the west side of Doe Mill Road, about 1 mile southeast of the bridge across Butte Creek, about 2 1/2 miles (air) southeast of Forest Ranch, about 5 miles (air) southwest of Stirling City 713 Comment
  CAS-BOT-BC401857  Corydalis caseana subsp. caseana Lowell Ahart 1983-8-16 4301 Butte About 1 mile east of Butte Meadows 1450 Comment
  CDA34650  Cotoneaster lacteus L. Ahart 2009-8-23 16302 Butte On the south side of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. Comment
  CAS-BOT-BC291332  Cotula coronopifolia Lowell Ahart 1982-5-29 3450 Butte North of the Peter Ahart Ranch about 2 1/2 miles north and 1 1/4 miles east of Honcut 50 Comment
  CHSC113201  Crassula aquatica Lowell Ahart 2014-4-16 19364 Butte On the sides but near the bottom of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. 29 Comment
  CHSC28639  Crassula connata M. S. Taylor 1979-3-31 1972 Butte Jct of Pentz-Magalia Rd and Pentz Rd, se corner, ca. 1/4 mi w of Hwy 70, ca. 22 mi n of Oroville. 198 Comment
  CHSC40608  Crassula connata Ahart; Jokerst 1985-3-24 4853 Butte Serpentine Point, West of Yankee Hill. 550 Comment
  CHSC26727  Crassula tillaea M. S. Taylor; M. Hayes 1978-4-14 1554 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
  CHSC36970  Crassula tillaea M. S. Taylor; L. Ahart, J. D. Jokerst 1982-4-28 4372 Butte Graylodge Wildlife Refuge, around parking lot 5, ca. 1 mi s of HQ, ca. 12 mi sw of Gridley. 19 Comment
  HSC66350  Crassula tillaea M. S. Taylor 1979-3-31 1972 .5 Butte Junction of Pentz-Magalia Rd. and Pentz Rd., SE corner, 1/4 mi. W of Hwy. 70, 22 mi. N of Oroville 198 Comment
  CDA32002  Crataegus laevigata L. Ahart 2009-5-3 15792 Butte On the east side of Big Chico Creek, about 30 yards south of the gate about 10 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 Comment
  JEPS115662  Crataegus laevigata Lowell Ahart 2009-5-30 15792 Butte On the east side of Big Chico Creek, about 30 yards south of the gate about 10 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 269 Comment
  JEPS120499  Crepis occidentalis subsp. conjuncta L. P. Janeway 2012-6-7 10862 Butte Northern High Sierra Nevada. Southwestern spur of Rocky Ridge, 0.6 air km south of Batchelor Point; along Road 23N06E 0.8 road km southeast of Rim Road / Ponderosa Way. Comment
  CHSC21785  Crucianella angustifolia Robert A. Schlising 1974-5-19 3131 Butte 3 mi S of jct Neal Road and Skyway in Paradise. Comment
  CHSC39513  Crucianella angustifolia Lowell Ahart 1983-6-12 4037 Butte About 1 mile south of Crystal Hill, near Oregon Gulch, near Lake Oroville, about 7 miles south-west of Feather Falls. 425 Comment
  CHSC84052  Crucianella angustifolia Lowell Ahart 2003-5-26 10214 Butte On the west side of North Honcut Creek, about 2 1/2 miles north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville. 60 Comment
  UCD121549  Crucianella angustifolia W. R. Powell 1968-5-16 1504 Butte 1/2 mile northeast of Lake Wyandotte. 496 Comment
  UCD59826  Crypsis schoenoides H. L. Mason 1945-9-19 12729 Butte Gray Lodge Game Refuge, northwest of Pennington. Comment
  JEPS113173  Cryptantha affinis Lowell Ahart 2007-5-29 13926 Butte Near the southeast edge of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 1/2 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeas 636 Comment
  UCR64631  Cryptantha affinis H. F. Copeland 1930-7-20 1386 Butte Jonesville 1524 Comment
  SD122567  Cryptantha affinis Lowell Ahart, Peter Ahart 1984-6-10 4708 Butte Ca. 2 miles southwest of Forbestown Diversion Dam, northeast of Forbestown 700 Comment
  POM64246  Cryptantha flaccida E. B. Copeland 1903-5-2 3253 Butte Chico Comment
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Jan 23 2011
  SEINET10497606  Cryptantha hendersonii Lowell Ahart 1984-6-8 Ahart 4677 Butte Along the dirt road near the water tower, above the generator, ca. 1 mi E of Ponderosa Dam, ca. 2 mi N of Forbestown; Yellow Pine Forest; 475 m. 475 Comment
  CHSC40753  Cryptantha intermedia Lowell Ahart 1985-5-31 5030 Butte About 5 feet below the high water line of Lake Oroville, 1/8 mile east of the Enterprise Boat Launch Aream about 1/2 mile west of the Enterprise Bridge across Lake Oroville, north-east of Oroville. 274 Comment
  UC762200  Cryptantha intermedia R. F. Hoover 1936-5-21 1160 Butte 3 mi n Chico Comment
  CHSC39538  Cryptantha simulans Lowell Ahart 1983-5-28 4020 Butte On both sides of the trail to Feather Falls, about 5 1/4 miles north of the town of Feather Falls. 600 Comment
  CHSC7190  Cupressus macnabiana F. Kimball 1969-4-23 67 Butte Roadsides of Coutolenc Rd. 0.3 mi n of Paradise-Stirling City Skyway, 0.5 mi n of Magalia. 762 Comment
  UC1086220  Cupressus macnabiana L. Heckard and R. Bacigalupi 1951-8-7 3473 Butte 0.5 mi ne of Magalia 701 Comment
  SEINET10966021  Cupressus macnabiana Mary Susan Taylor 1975-5-9 Taylor 568 Butte Abundant in serpentine area, ca. 50 ft E of the Skyway, ca. 1/4 mi N of DeSabla turnoff, Magalia; with Arctostaphylos sp. 732 Comment
  CAS-BOT-BC224425  Cuscuta californica Lowell Ahart 1988-8-10 6170 Butte West of Lunt Road, about 1/2 mile north-west of Highway 70 548 Comment
  JEPS47093  Cuscuta indecora W. K. Studley 1910-10-31 4 d Butte Chico Comment
  JEPS118063  Cuscuta pentagona Lowell Ahart 2011-8-17 17627 -A Butte About 10 yards north of the trail, north of the crossing and 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
  CHSC55056  Cuscuta subinclusa Lowell Ahart 1991-8-25 6706 Butte North side of the dirt road, Forest Rd 23N60 (Jordan Creek-Marble Creek Rd), east of Oroville-Quincy Hwy, about 5 miles (air) north-east of Brush Creek. 1097 Comment
  CHSC61293  Cycladenia humilis var. humilis Lowell Ahart 1993-7-31 7144 Butte On the south side of the dirt road that leads to Ramsey Bar, about 1/2 mile north of Ramsey Bar. 1371 Comment
  CHSC33516  Cynoglossum occidentale R. Preston; R. Banchero, R. A. Schlising 1981-7-14 4151 Butte N part of county, W of Humbug Summit. 1828 Comment
  UC480665  Cynoglossum occidentale H. F. Copeland 1930-6-11 Butte Jonesville, Butte Creek Canyon Comment
  CAS-BOT-BC190392  Cynosurus echinatus Clare B. Hardham 1975-6-7 20429 Butte South end of Oroville Dam. Comment
  SEINET10507677  Cynosurus echinatus Mary Susan Taylor 1979-9-28 Taylor 2200 A Butte Butte County line at Hwy 70, between boundry and Arch Rock tunnel; granitic soils and dome outcrop. 488 Comment
  SEINET10905665  Cyperus aristatus Lowell Ahart 1983-9-17 Ahart 4431 Butte T22N R4E se section 31. Ca. 1/8 mi ne of Kunkle Reservoir, south of Paradise. Foothill Woodland; 600 m. 600 Comment
  CAS-BOT-BC114703  Cyperus bipartitus Lowell Ahart 1981-9-15 3169 Butte Along French Creek. 1300 Comment
  CHSC66364  Cyperus difformis Vernon H. Oswald 1996-6-20 7832 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife parcel between 7 Mile Lane and the Sacramento River. Marsh at NE corner of Tract 3.1, Sanctuary II. 33 Comment
  JEPS120026  Cyperus difformis Lowell Ahart 2012-10-20 18513 Butte On the north side of Big Chico Creek, south of Table 34, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  SEINET11750563  Cyperus difformis R. A. Schlising 1979-1 3503 Butte along Sacramento River W of Chico, just N of Chico Landing Site in Bidwell River State Comment
  CHSC68385  Cyperus eragrostis L. P. Janeway 1996-5-27 4980 Butte Along Durham-Pentz Road 0.7 mi east of Clark Road. 118 Comment
  CHSC76299  Cyperus eragrostis Lowell Ahart 1999-9-21 8272 Butte Large disturbed area 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
  UCD54066  Cyperus eragrostis E. M. Johnston 1915-1 W- 142 J Butte Biggs. Comment
  CAS-BOT-BC114380  Cyperus erythrorhizos Lowell Ahart 1986-11-9 5447 Butte Ca 1/10 mi S of the clay burrow for Oroville Dam, 1/4 mi E of Larkin Road, 36 Comment
  CHSC108132  Cyperus erythrorhizos Lowell Ahart 2011-10-29 17730 Butte On the bare sides of a ditch, on the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 mile northwest of Biggs. 27 Comment
  CHSC45157  Cyperus erythrorhizos Lowell Ahart 1984-8-19 4789 Butte In an area where gravel is removed, north of the state burrow area, west of Pacific Heights Road, about 5 air miles south-west of Oroville. 36 Comment
  UC1100514  Cyperus erythrorhizos Herbert L. Mason and Verne Grant 1946-8-14 13022 Butte canal near big pond by Sacramento Outing Club; Butte Sink Comment
  CAS-BOT-BC114222  Cyperus flavescens John Thomas Howell 1961-9-22 36790 Butte Arch Rock Tunnel, North Fork of Feather River. 487 Comment
  CHSC78486  Cyperus flavescens Lowell Ahart 2000-8-23 8664 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
  CHSC42065  Cyperus flavicomus Lowell Ahart 1984-9-24 4810 Butte Along the edge of Middle Honcut Road, about 3/4 mile east of Highway 70, about 12 miles south of Oroville. 32 Comment
  CHSC78732  Cyperus fuscus Lowell Ahart 2000-9-15 8688 Butte West 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
  UCD54029  Cyperus fuscus L. Ahart 2000-9-15 8688 Butte west of a large pond on the east side of 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
  RSA0060810  Cyperus iria Lowell A. Ahart 2012-10-5 18476 Butte South edge of parking area at the restroom, end of road to the Larkin Road Boat Launch Area, about 1/4 mile west of Larking Road, about 2 miles (air) southwest of the Oroville Airport. 28 Comment
  UCR257984  Cyperus iria Whitney Brim-Deforest 2013-8-1 s.n. Butte Biggs Rice Station, NNW of the town of Biggs, in rice field located just on the north side of West Hamilton Road, c. 1.74 miles west of Hwy 99 30 Comment
  CDA34631  Cyperus niger L. Ahart 2009-6-19 15924 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. Comment
  CHSC42900  Cyperus niger Lowell Ahart 1987-7-3 5767 Butte On a sand bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC68395  Cyperus niger L. P. Janeway; C. A. Janeway 1986-10-4 1909 Butte Gravel bar along Butte Creek about 2 1/2 mi east of The Skyway. 45 Comment
  JEPS115985  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
  CAS-BOT-BC113849  Cyperus niger var. capitatus Lowell Ahart 1980-7-29 2511 Butte Along Lower Forbestown Road. 750 Comment
  CAS-BOT-BC114063  Cyperus squarrosus E. B. Copeland 1931-7-17 612 Butte Jonesville. 1700 Comment
  CAS-BOT-BC114076  Cyperus squarrosus Lowell Ahart 1987-7-3 5774 Butte Along the North Fork of the Feather River, near the Poe Power house, 271 Comment
  CHSC56608  Cyperus squarrosus L. P. Janeway; R. A. Schlising 1988-7-16 3036 Butte Vernal pool next to Humbug Summit Road ca 0.8 mi west of Butte Creek House. 1805 Comment
  CAS-BOT-BC114074  Cyperus squarrosus Lowell Ahart 1980-7-29 2513 Butte Along Lower Forbestown Road. 750 Comment
  CAS-BOT-BC114203  Cyperus strigosus Lowell Ahart 1987-7-17 5832 Butte Along the North Fork of the Feather River, near the Poe Power House, 271 Comment
  CHSC42899  Cyperus strigosus Lowell Ahart 1987-7-17 5832 Butte Sand bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  UCD141149  Cyperus strigosus L. Ahart 1982-10-11 3854 Butte west of check-in station, Graylodge Wildlife Refuge, 12 miles SW of Gridley. 35 Comment
  NY621805  Cypripedium californicum L. Ahart 1987-6-9 5729 Butte This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  CHSC39805  Cystopteris fragilis Ruby Gist 1935-3-1 Butte Fern Banks. Comment
  CHSC4626  Cystopteris fragilis R. Carter 1966-3-13 299 Butte Found ca 6 mi. E of Chico at intersection of Honey-Run Rd. and Humbug Rd. in Butte Cr. Canyon. Comment
  SEINET10535610  Cystopteris fragilis Mary Susan Taylor 1979-5-4 Taylor 1988 Butte T21N R6E sec 10. Millsap Bar Campground, ca. 9 mi NE of junction of Millsap Bar Road with Brush Creek Road, ca. 26 mi NE of Oroville; Yellow Pine Forest with limestone outcrops. 1006 Comment
  SEINET10833641  Cystopteris fragilis Mary Susan Taylor 1981-5-13 Taylor 3694 Butte 4500 ft. T23N R6E se sec 32, Pulga SE quad. In decomposed granite on E side of 23N15.5, ca. 1 mi S of its jct with Four Trees Rd, ca. 8 air mi E of Pulga and 0.5 mi W of Oroville-Quincy Hwy. 1372 Comment
  CHSC10540  Damasonium californicum Lowell Ahart 1968-4-6 Butte Peter Ahart Ranch, Honcut. 42 Comment
  SEINET10968236  Danthonia californica Lowell Ahart 1983-8-16 Ahart 4291 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
  CAS-BOT-BC194412  Danthonia intermedia V. Oswald; L. Ahart 1988-7-26 3615 Butte Snow Mt. region located ca. 6 air mi SE of Jonesville. 1996 Comment
  SEINET10900654  Danthonia unispicata M. E. Banning 1969-4-18 Banning 85 Butte Junction of Pentz Rd. and Pentz Magalia Rd. Soil dry and rocky, abundant. 305 Comment
  CHSC3609  Daphne odora R. Jaegel 1966-2-19 14 Butte Collected 6 blocks north of Bidwell Mansion; Chico. Comment
  CHSC66290  Darmera peltata Lowell Ahart 1996-6-5 7681 Butte Along river, about 1/10 mile north of the bridge across the South Fork of the Feather River, about 1 mile north of Golden Trout Crossing, about 7 air miles east of Feather Falls. 914 Comment
  CHSC48690  Delphinium gracilentum Vernon Oswald 1984-4-9 1130 Butte Feather Falls Trail, 1.8 trail mi. from the trail head at the end of Bryant Ravine Rd. 502 Comment
  CAS-BOT-BC8795  Delphinium gracilentum Lowell Ahart 1980-4-7 2070 Butte Along Swedes Flat Road, near Bangor 320 Comment
  UCD80696  Delphinium hansenii subsp. hansenii CNPS SN Foothill Team 2005-5-24 SNFN 0172 c Butte City of Chico, Upper Bidwell Park, in the northern 1/4 of the park, on the west side of Big Chico Creek, about 75 m from the canyon rim. 338 Comment
  CHSC56579  Delphinium hesperium subsp. hesperium J. D. Jokerst 1981-5-11 1308 Butte Top of Doe Mill Ridge, center. 457 Comment
  CHSC78092  Delphinium nudicaule Caleb E. Casey 1999-3-4 Butte Upper Bidwell Park, below bluffs on south side of Bear Hole. 304 Comment
  CHSC90183  Delphinium nudicaule Ken Larsen 1989-4-15 19 Butte Near Salmon Hole, Upper Bidwell Park, Chico; about 5 km east of Chico Municipal Golf Course. 250 Comment
  CHSC36086  Delphinium nuttallianum R. A. Schlising; J. D. Jokerst, R. Banchero 1980-6-16 3722 Butte 2.0 miles S of jct Skyway and Humboldt Road in Butte Meadows. 1432 Comment
  CAS-BOT-BC121624  Delphinium patens subsp. patens Helen M. Edwards 1916-6-1 s.n. Butte De Salba Comment
  CHSC56779  Delphinium patens subsp. patens J. D. Jokerst 1981-4-10 1285 Butte Table Mountain; west edge of mountain, 100 m north of Cherokee Road. 335 Comment
  JEPS104009  Delphinium patens subsp. patens Lowell Ahart 2003-4-15 10100 Butte Slopes of Beatson Hollow, sw of drainage entering Beatson Hollow, ca 1 1/4 mi nw of the iron gate and fence, nw of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 284 Comment
  CHSC31845  Delphinium variegatum L. Ahart 1974-3-18 323 Butte In pasture fields; Peter Ahart Ranch, Honcut. 45 Comment
  CHSC53303  Delphinium variegatum J. V. Serrao II 1971-5-2 153 Butte In meadows throughout ne side of lower Bidwell Rd, ca. 100 yds w of Horseshoe Lake, Bidwell Park. 121 Comment
  CHSC24771  Delphinium variegatum subsp. variegatum L. J. Gut 1976-4-23 11 Butte Ca. 30 yds. s of the Skyway, ca. 15 mi e of Chico. 457 Comment
  SBBG29993  Dendromecon rigida A. A. Heller 1938-6-14 105 Butte Feather River Hwy, about 1 mi W of Jarboe Gap 609 Comment
  SBBG30028  Deschampsia cespitosa subsp. cespitosa E. B. Copeland 1931-7-15 Butte Jonesville 1750 Comment
  SD116538  Deschampsia danthonioides B. Ertter, Jeff Strachan 1980-5-5 3255 Butte Peter Ahart Ranch; ca 1 I(c) miles northest of Honcut between Oroville and Marysville; in pasture north of house 29 Comment
  SEINET11683958  Deschampsia danthonioides R. Banchero, Banchero, M. 1979-1 18 Butte ca 0.5 mi N of Pine Creek, NW of Singer Creek, 7 mi NW of Nord on Cana-Pine Creek Rd 56 Comment
  CAS-BOT-BC201739  Deschampsia elongata Lowell Ahart 1984-6-10 4700 Butte About 2 miles south-west of the Forbestown Diversion Dam, north-east of Forbestown 700 Comment
  CHSC42913  Deschampsia elongata Lowell Ahart 1987-7-8 5792 Butte Along Big Bar Mountain Road, about 3 miles south-west of Coyote Gap, south-east of Pulga. 1280 Comment
  UCR143556  Deschampsia elongata H. F. Copeland 1930-7-24 1343 Butte Jonesville 1524 Comment
  CAS-BOT-BC388454  Dianthus armeria John Thomas Howell 1962-6-15 37511 Butte Magalia 731 Comment
  CAS-BOT-BC388456  Dianthus armeria Lowell Ahart 1983-6-30 4173 Butte Along the edge of old Highway 40, near the water fountain, about 4 miles south of Jarbo Gap 350 Comment
  CHSC19647  Dicentra eximia K. R. Stern 1966-3-25 Butte Chico. Comment
  SEINET10904729  Dicentra formosa Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4710 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  CHSC105687  Dicentra formosa subsp. formosa Lowell Ahart 2010-9-21 17202 Butte About 50 yards east of the poor dirt road, about 100 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
  CAS-BOT-BC402392  Dicentra formosa subsp. formosa E. K. Balls; L. W. Lenz 1955-5-13 20687 Butte Magalia Reservoir, n. of Magalia 731 Comment
  CHSC2098  Dichelostemma capitatum subsp. capitatum P. Delaplane 1965-3-30 65 Butte On Table Mtn. Ca. 13 mi NNW of Oroville, on W. side of Oroville Cherokee Rd. 609 Comment
  CHSC38769  Dichelostemma capitatum subsp. capitatum Vernon Oswald 1983-2-9 63 Butte Upper Bidwell Park, Chico, on the north rim at the level of Horseshoe Lake. 134 Comment
  CHSC45017  Dichelostemma congestum E. Ray Latham 1988-4-21 Butte Large population 100m e of e end Fremont st., Chico. 30 Comment
  SEINET10472574  Dichelostemma congestum Mary Susan Taylor 1980-5-27 Taylor 2712 Butte T21N R6E nw sec 29. Big Bend quad. Little Bald Rock, ca. 3 mi S of Brush Creek; granitic dome within Yellow Pine Forest. 1016 Comment
  CHSC101669  Dichelostemma multiflorum Lowell Ahart 2009-4-26 15647 Butte On the west side of Guardians Trail, about 200 yards southwest of Pine Trail, 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. 381 Comment
  CHSC90610  Dichelostemma multiflorum Roberta A. Boer 1980-4-25 15 Butte About 1/4 mi north of Humboldt Road and 1.5 mi east of the junction of Hwy 32 and Hwy 99, east side of Chico. 131 Comment
  SD111968  Dichelostemma multiflorum Barbara Ertter, Lowell Ahart, Jeffrey Strachan 1980-5-6 3271 Butte Peter Ahart Ranch, ca. 2I(c) miles north-northeast of Honcut, between Oroville and Marysville. Dried vernal pool previously plowed as grainfield, now reverted, very rocky. 29 Comment
  SEINET12053817  Dichelostemma multiflorum Unknown 1936-1 13338 Butte Mud Creek near Chico Comment
  SEINET12053819  Dichelostemma multiflorum L. S. Rose 1931-1 s.n. Butte Oroville Comment
  CHSC2099  Dichelostemma volubile E. Walker 1932-6-26 Butte Magalia Heights. 731 Comment
  CAS-BOT-BC502511  Dichelostemma volubile Lowell Ahart 1977-5-22 s.n. Butte Peter Ahart Ranch, Honcut; Along North Honcut Creek. Foothill Woodland. 50 Comment
  SEINET10533886  Dichelostemma volubile A. Arthur Heller 1915-4-20 Heller 11848 Butte Thickets in the digger pine and oak belt, 2 miles below Centerville in the Sierra foothills, associated with Ceanothus, Aesculus and Toxicodendron in the blue oak-digger pine belt, where it is rather common. Comment
  CAS-BOT-BC150503  Diplacus grandiflorus Mrs. Eva Pattee 1923-5-15 s.n. Butte Shady Rest near Cresta Comment
  CHSC33585  Diplacus grandiflorus M. S. Taylor 1981-5-5 3599 Butte E side of Lumpkin-La Porte Rd, 1 mi n of Enterprise bridge over south fork Feather River, ca. 10 air mi e of Oroville. 457 Comment
  CAS-BOT-BC153208  Diplacus kelloggii John Thomas Howell 1978-4-17 52843 Butte Table Mountain 381 Comment
  CHSC103691  Diplacus kelloggii Lowell Ahart 2010-5-7 16624 Butte On the west side of a trail, about 100 yards north of south park fence, on a ridge about 1/2 mile west of Highway 32, Upper Bidwell Park, about 4 1/2 miles (air) northeast of Chico. 304 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
  CHSC34081  Diplacus kelloggii M. S. Taylor 1980-4-18 2501 Butte Ca. 1 mi s of Nimshew, ca. 1/4 mi e of Nimshew Rd. 609 Comment
  CAS-BOT-BC153336  Diplacus layneae John Thomas Howell 1962-6-15 37533 Butte Magalia 731 Comment
  CAS-BOT-BC153334  Diplacus layneae Clarence R. Quick 1952-6-25 52 -68 Butte Ridge - top, 21.5 miles from Chico on Deer Creek Road Comment
  CAS-BOT-BC154040  Diplacus torreyi E. B. Copeland 1929-7-18 462 Butte Jonesville 1550 Comment
  CHSC38708  Diplacus torreyi Vernon Oswald 1983-6-11 666 Butte Upper Bidwell Park, in Lindo Channel near the diversion weir. 79 Comment
  CAS-BOT-BC154170  Diplacus tricolor A. A. Heller 1914-4-24 11314 Butte Chico-Oroville road 7/8 miles from Chico Comment
  CAS-BOT-BC151465  Diplacus tricolor A. A. Heller 1940-5-13 15614 Butte Field 3 miles west of Chico, along State Highway #32 Comment
  SEINET8370227  Diplacus tricolor Christine C. Lorain 1995-4-30 2270 Butte just E of Floral Road in the northern part of Chico. 61 Comment
  CHSC109851  Dittrichia graveolens L. P. Janeway 2012-11-14 11083 Butte Cascade Range Foothills. Along Skyway between Chico and Para-dise, 5.3 road km east of its bridge over Butte Creek; along inner edge of west-bound lane. 215 Comment
  UC600767  Dodecatheon alpinum H. F. Copeland 1929-6-10 1215 Butte Jonesville 1524 Comment
  CHSC3995  Dodecatheon clevelandii subsp. patulum Wayne O. Baum 1967-3-17 3 Butte In triangle area, on e. side of Cohasset Rd. and ca. 312 mi n. of Chico. 60 Comment
  CHSC45084  Dodecatheon hendersonii J. Marr 1988-3-24 10 Butte ! mi w of Concow Rd 6 mi from Hwy 70, 18 mi n of Oroville. 633 Comment
  UC28961  Downingia bicornuta var. bicornuta Edw. L. Greene Jun 1889 Butte near Chico Comment
  UC766390  Downingia cuspidata R. F. Hoover 1938-4-24 3251 Butte 3 mi e Richvale Comment
  UCD55099  Downingia cuspidata Rachel Foster 1968-4-13 68- 212 Butte North Table Mountain. 396 Comment
  CHSC181  Downingia insignis V. Holt 1935-5-15 Butte Oroville road. 76 Comment
  CHSC10744  Downingia ornatissima Lowell Ahart 1972-5-8 Butte Peter Ahart Ranch, Honcut. 45 Comment
  POM257240  Downingia ornatissima H. L. Mason 1927-5-9 3708 Butte Sacramento Valley, 15 miles W of Oroville. Comment
  UC764554  Downingia ornatissima var. ornatissima R. F. Hoover 1936-5-21 1170 Butte 8 mi nw Chico Comment
  CAS-BOT-BC41346  Draba verna Lowell Ahart 1980-3-8 2032 Butte Honcut. Peter Ahart Ranch. 50 Comment
  CHSC35018  Draba verna var. verna R. E. Preston 1982-3-20 195 Butte Ca. 50 ft n of Humboldt Rd, ca. 3.3 mi e of downtown Chico. 106 Comment
  CHSC687  Draperia systyla R. Carter 1964-5-16 90 Butte Feather R. Canyon, S side Hwy. 40 A along old road ca. 300 yds. E of Bear Cr. 731 Comment
  RSA0119327  Draperia systyla Lowell A. Ahart 2014-7-16 19671 Butte About 50 yards east of the Skyway, about one-mile north of Stirling City. 1142 Comment
  SEINET11994763  Drosera rotundifolia L. Ahart, Ahart, P. 1984-1 4756 Butte About 1/2 mile E of Bald Mountain, about 5 mi NE of Stirling City 1750 Comment
  CAS-BOT-BC428075  Dudleya cymosa subsp. cymosa Mrs. J. H. Morrison 1932-5-1 s.n. Butte Durham Comment
  CHSC26666  Dysphania ambrosioides M. S. Taylor; M. Hayes 1977-8-16 1445 Butte In flower bed, Butte College, Campus, ca. 15 mi s of Chico. 60 Comment
  CHSC31235  Dysphania ambrosioides M. S. Taylor 1980-10-6 3358 Butte N 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
  CHSC31540  Dysphania ambrosioides L. Ahart 1978-8-30 1799 Butte Along the edge of North Honcut Creek. Peter Ahart Ranch. 15 Comment
  CHSC38309  Dysphania ambrosioides Vernon Oswald 1983-8-19 1011 Butte Upper Bidwell Park, Chico, in Lindo Channel ca. 100 ft. upstream of the flood-control gates. 79 Comment
  CHSC42963  Dysphania pumilio Lowell Ahart 1987-7-17 5834 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
  CHSC47672  Dysphania pumilio Lowell Ahart 1989-9-21 6391 Butte Along the south edge of the gravel road, south of French Creek, about 1 mile west of the Sly Creek Reservoir. 1158 Comment
  UCD60802  Echinochloa crus-galli Beecher Crampton 1957-9-17 4625 Butte Biggs Rice Exper. Station, 5 miles northwest of Biggs. Comment
  CDA1993  Echinochloa oryzicola G. D. Barbe, T. C. Fuller 1977-9-2 2335 Butte Rice Experiment Station, Biggs. 0 Comment
  POM365245  Echinochloa oryzoides L. Ahart 1984-9-17 4792 B Butte Peter Ahart Ranch, ca. 2.3 mi. N and 0.3 mi E of Honcut, ca. 12 mi S of Oroville. 50 Comment
  CHSC42128  Elatine ambigua Lowell Ahart 1978-5-12 1716 Butte Peter Ahart Ranch, about 2-1/4 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC82220  Elatine chilensis Lowell Ahart 2002-4-15 9498 Butte On the bottom and sides of ponds and ditches, east of Parking Lot 10, Gray Lodge State Wildlife Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  SEINET11994725  Elatine heterandra Unknown 1984-1 4596 Butte ca 25 mi N and 1.4 mi E of Honcut, ca 12 mi S of Orovill 40 Comment
  CHSC117440  Eleocharis acicularis Lowell Ahart 2016-5-24 20868 Butte On the bottom of a large drainage, about 100 yards norfth of the ditch, 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. 44 Comment
  JEPS122218  Eleocharis acicularis Lowell Ahart 2014-4-16 19366 Butte On the sides but near the bottom of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. Comment
  JEPS98285  Eleocharis acicularis Lowell Ahart 2000-5-11 8338 Butte 12 air miles SE of Oroville (along a small wash, 100 yds S of a dirt road, Peter Ahart Ranch, 1 1/2 mi N and 1 1/2 mi E of Honcut) 45 Comment
  CAS-BOT-BC113640  Eleocharis acicularis var. occidentalis Lowell Ahart 1980-5-10 2225 Butte Peter Ahart Ranch, Honcut. 50 Comment
  UCD49581  Eleocharis atropurpurea J. M. Tucker 1953-8-28 2681 Butte In rice plots; Biggs Rice Experiment Station, Butte County, California. Comment
  CAS-BOT-BC113454  Eleocharis bella Lowell Ahart 1981-8-15 3030 Butte Ca. 1.5 miles S of Snag Lake (ca. 3 mi S of Jonesville). 1726 Comment
  CHSC51022  Eleocharis bella Lowell Ahart; Vern Oswald 1990-7-5 6550 b Butte Small meadow, about 1/2 mile north of Butte Creek House, about 2 miles north-east of Snag Lake. 1828 Comment
  UC1562292  Eleocharis bella Lowell Ahart 1990-7-1 6546 Butte along McCabe Creek, below high water line of Lake Oroville, 1/2 mi SW of the Enterprise Bridge across Lake Oroville 243 Comment
  CAS-BOT-BC113456  Eleocharis bella Lowell Ahart 1980-7-29 2510 Butte Along Lower Forbestown Road. 750 Comment
  CHSC110240  Eleocharis bolanderi L. P. Janeway 2012-6-2 10833 Butte Northern High Sierra Nevada. Plumas National Forest; eastern slope of Bloomer Hill, 1.0 air km east of the top. 701 Comment
  CAS-BOT-BC113584  Eleocharis decumbens L. P. Janeway 1987-6-13 2217 Butte Meadow just NE of junction of Concow Road and the road to Flea Mountain. 1188 Comment
  CHSC71199  Eleocharis engelmannii Lowell Ahart 1998-6-30 8014 Butte Southwest margins of a large seep, southwest of the lone oak tree, west of the cow chute on the west side of Cheorkee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  UC1100600  Eleocharis engelmannii Malcolm A. Nobs, S. Galen Smith 1949-7-29 1084 Butte 5 mi W of Richvale (rice field) Comment
  UCD49723  Eleocharis engelmannii Beecher Crampton 1957-9-17 4630 Butte Biggs Rice Exper. Sta. 5 miles northwest Biggs, Butte County. Comment
  CAS-BOT-BC112793  Eleocharis macrostachya E. B. Copeland 1931-7-15 613 Butte In and beside the Lili Pond, a permanent pool, warm in summer. Jonesville. 1750 Comment
  CHSC55452  Eleocharis macrostachya L. P. Janeway 1991-4-7 3992 Butte Ca 0.3 mi east of Palermo-Honcut Road, ca 5.1 mi south of Palermo. 30 Comment
  CHSC68428  Eleocharis macrostachya L. P. Janeway; C. A. Janeway 1986-8-31 1812 Butte Border along Philbrook Reservoir at PG and E Picnic Area on northeast side of lake. 1691 Comment
  CAS-BOT-BC113339  Eleocharis montevidensis Lowell Ahart 1978-7-15 s.n. Butte On moist soil along edge of North Honcut Creek, Peter Ahart Ranch, Honcut. 50 Comment
  CDA39004  Eleocharis obtusa var. engelmannii L. Ahart 2003-6-23 10 .302 Butte Peter Ahart Ranch, about 1/2 mile east of the Palermo Honcut Highway, about 2 miles north of Honcut, about 12 miles south of Oroville. Comment
  POM183192  Eleocharis parishii H. F. Copeland 1930-7-24 1356 Butte Jonesville. 1524 Comment
  CHSC78311  Eleocharis quinqueflora Lowell Ahart 2000-7-7 8555 Butte Small seep just west of the bridge across Fall River, on the north side of Fall River, about 3 miles north of Lumpkin Ridge Road, about 5 miles (air) northeast of Feather Falls. 1036 Comment
  CDA38988  Eleocharis quinqueflora L. Ahart 2000-5-1 8333 Butte On the north margin of a large wash, just west of the road crossing, Peter Ahart Ranch, about 1 3/4 miles north and 1 1/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. Comment
  CDA38989  Eleocharis quinqueflora L. Ahart 2000-5-3 8411 Butte About 1/4 mile northeast of Kunkle Reservoir, east of the Pentz Magalia Road about 2 miles south of Paradise. Comment
  CHSC46686  Eleocharis suksdorfiana V. Oswald; L. Ahart 1989-8-15 3936 Butte Soda Ridge Rd, 1.4 mi w of its junction with Coon Hollow Rd, ca. 1.2 mi (air) n of Philbrook Reservoir. Meadow adjacent to a shallow spring-fed lake n of and visible from the road. 1752 Comment
  JEPS98520  Eleocharis suksdorfiana Lowell Ahart 2000-7-5 8552 Butte In a small meadow, about 100 yards west of the Skyway, about 1 mile south of Inskip, about 4 1/2 miles north of Stirling City. 1310 Comment
  CHSC45318  Eleusine indica Vernon Oswald 1988-8-30 3695 Butte California State University, Chico, along Mansion Ave. 59 Comment
  CHSC69974  Eleusine indica L. P. Janeway 1997-10-5 5367 Butte Campus of California State University, Chico; within the city of Chico. In landscaping around Holt Hall. 60 Comment
  JEPS102306  Elodea canadensis Lowell Ahart 2001-7-6 8883 Butte 12 mi SE of Chico (small pond W of a lg. pond, lg. overflow area on E side of Sacramento River, NW of Parrott Landing, 1 mi SE of Ord Ferry, 2 mi SE of Ord bend[sic]) 32 Comment
  CHSC43132  Elymus elymoides subsp. elymoides Robert Banchero 1981-7-18 605 Butte Ca 0.3 mi e of jct Jonesville Rd and Scotts-John Rd. Roadside. 1749 Comment
  CHSC25268  Elymus glaucus M. S. Taylor 1977-6-25 1364 Butte On Sacramento River, ca. 10 mi e of Chico on River Rd. 30 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
  CAS-BOT-BC203424  Elymus glaucus subsp. glaucus K. Henegar 1969-5-15 52 Butte Upper Bidwell Park, along road near Bear Hole Comment
  CAS-BOT-BC203426  Elymus glaucus subsp. glaucus A. A. Heller 1914-7-23 11614 Butte Chico Meadows 1219 Comment
  CHSC66457  Elymus glaucus subsp. glaucus Vernon H. Oswald; Lowell Ahart 1996-6-10 7732 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
  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
  CHSC9338  Elymus multisetus Marilyn Lee 1968-5-3 156 Butte Along Skyway, ca. 8 miles E. of Chico. 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
  JEPS113673  Elytrigia pontica subsp. pontica Lowell Ahart 2007-8-3 14404 Butte Waste area on the northwest side of Nelson Road, about 1/4 mile northeast of Seven Mile Lane, about 7 1/2 miles west of Nelson 29 Comment
  CHSC29022  Enemion occidentale M. S. Taylor; J. D. Jokerst, L. Ahart 1980-4-4 2460 Butte On s side of Swedes Flat Rd, ca. 1 mi e of its jct with Bangor-Oroville Hwy, ca. 10 mi se of Oroville. 335 Comment
  SEINET10453213  Epilobium adenocaulon var. holosericeum Lowell Ahart, Peter Ahart 1983-7-24 Ahart 4212 A Butte T20N R7E ne sec 32. At the Forbestown Reservoir, ca. 5 mi ne of Forbestown. Yellow Pine Forest; 450 m. 450 Comment
  POM193366  Epilobium angustifolium subsp. circumvagum E. B. Copeland 1930-7-21 428 Butte Jonesville 1600 Comment
  UCD105287  Epilobium brachycarpum H. F. Copeland 1928-8-29 s.n. Butte Jonesville, Butte Creek. 1524 Comment
  CHSC26296  Epilobium canum subsp. latifolium J. P. Kroessig 1977-8-1 22 Butte E margin of Hwy 32, ca 6 km wsw of Butte Meadows. Roadside. 1098 Comment
  CHSC38569  Epilobium ciliatum subsp. ciliatum Vernon Oswald 1983-6-29 797 Butte Upper Bidwell Park, Chico, on the n side of Upper Park Rd. near Parking Area L (Diversion Dam). 134 Comment
  JEPS88582  Epilobium ciliatum subsp. ciliatum Vernon H. Oswald and Lowell Ahart 1996-7-22 8078 Butte US Fish & Wildlife Service parcel betw 7 Mile Lane and Sacramento R. (edge of farm rd. crossing branch of Angel Slough w of Refuge HQ's at s.e. corner of Tract 1, Sanctuary 1); Sacramento R. Nat'l Wildlife Refuge, Llano Seco Unit 32 Comment
  UCD105783  Epilobium ciliatum subsp. ciliatum L. E. Hazeltine 1916-7-24 s.n. Butte Chico. Comment
  POM196024  Epilobium ciliatum subsp. glandulosum E. B. Copeland 1929-7-25 388 Butte Jonesville. 1500 Comment
  POM214002  Epilobium ciliatum subsp. glandulosum H. F. Copeland 1935-7-28 s.n. Butte Jonesville. 1500 Comment
  UC765003  Epilobium cleistogamum R. F. Hoover 1936-5-20 1153 Butte 10 mi sw Oroville Comment
  UC107941  Epilobium densiflorum H. E. Brown 1896-10-9 111 Butte near Clear Creek 53 Comment
  RSA795884  Epilobium foliosum L. Ahart 2012-6-2 18141 Butte South edge of Truex Road, about 40 yards east of the intersection of Truex Road and Trevor Road, about 1/8 miles northwest of the West Branch Bridge across Lake Oroville. 307 Comment
  CHSC61325  Epilobium glaberrimum Lowell Ahart 1993-7-22 7091 Butte Along Fall River, on the east side of the campground road, about 1/4 mile north-west of the bridge across Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  UC600554  Epilobium glaberrimum subsp. glaberrimum H. F. Copeland 1932-7-21 Butte edge of Kennedy's Meadow Jonesville Comment
  SEINET10453180  Epilobium minutum Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4712 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  CHSC11780  Epilobium obcordatum E. B. Copeland 1931-7-13 664 Butte Jonesville. At 'the Summit. 2000 Comment
  CHSC46582  Epilobium oregonense Vernon H. Oswald 1989-7-18 3864 Butte Humboldt Rd east of Butte Meadows, just e of the Butte Creek Bridge at Cherry Hill. Near the downstream corner of a meadow bordering Butte Creek. 1389 Comment
  CHSC35104  Epilobium pygmaeum R. Schlising; J. D. Jokerst 1980-7-2 3823 Butte SE of Chico, along Skyway, 0.5 mi W of jct with Humbug Road, by Butte Creek Diversion Channel. Vernal pool along Skyway. 68 Comment
  SEINET3449326  Epilobium pygmaeum Unknown 2003-6-23 10313 Butte Oroville, Oroville, about 12 miles south, Peter Ahart Ranch, about 2 1/8 miles north of Honcut, about 300 yards east of Palermo Honcut highway 30 Comment
  CHSC35777  Equisetum telmateia subsp. braunii S. T. Heaston; M. Foster 1982-4-12 20 Butte W branch of the Feather River. 13 air mi n of Oroville, ca. 600 ft. ne Lime Saddle Powerhouse. 304 Comment
  SEINET4568215  Eragrostis chloromelas R. McKee 1910-9-7 15370 Butte Chico Comment
  CHSC50705  Eragrostis cilianensis Lowell Ahart 1990-6-16 6518 Butte Along McCAbe Creek, below the high water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  CHSC97129  Eragrostis cilianensis Lowell Ahart 2007-7-2 14243 Butte East road edge of Oroville Quincy Highway, about one mile south of Big Ridge Road, about 9 miles (air) northeast of Oroville. 362 Comment
  UC1562282  Eragrostis cilianensis Lowell Ahart 1990-8-15 6583 Butte 0.5 mi sw Enterprise Bridge across Lake Oroville (near McCabe Creek, below the high water line); Lake Oroville 228 Comment
  SEINET10508795  Eragrostis diffusa Lowell Ahart 1984-8-19 Ahart 4790 Butte West of Pacific Heights Road, about 5 miles south-west of Oroville. Comment
  CHSC51288  Eragrostis hypnoides Lowell Ahart 1990-9-30 6599 Butte Along the edges of Canyon Creek, below the high water line of Lake Oroville, below the Canyon Creek Bridge across Lake Oroville. 219 Comment
  CAS-BOT-BC284039  Eragrostis mexicana subsp. virescens Lowell Ahart 1981-11-6 3229 Butte East of the Gridley Bridge 35 Comment
  SEINET10954137  Eragrostis mexicana subsp. virescens Lowell Ahart 1999-10-28 Ahart 8306 Butte T20N, R1W, Section not surveyed. Large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, aout 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC44922  Eragrostis pectinacea var. pectinacea Lowell Ahart 1988-7-24 6135 Butte Along the north edge of La Porte Road, about 2 1/2 miles north-east of Bangor. 274 Comment
  UCD65674  Eragrostis pilosa var. pilosa A. A. Heller 1914-8-20 11688 Butte 8 miles north of Oroville near the base of Table mountain. Comment
  UC600730  Ericameria nauseosa var. speciosa H. F. Copeland 1920-8-24 381 Butte Jonesville, near the big summit Comment
  CAS-BOT-BC296819  Erigeron divergens Mrs. J. H. Morrison 1932-5-8 s.n. Butte Durham Comment
  CHSC87544  Erigeron divergens R. D. Fischer 2004-3-28 67 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located along Guardian Trail where it runs below the Disk Golf Course. 335 Comment
  CHSC94044  Erigeron inornatus var. inornatus R. D. Fischer 2005-9-7 708 Butte Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch on the Big Chico Creek Ecological Reserve and on the north side of the hwy. at Crown Point Road junction. 518 Comment
  RSA699540  Erigeron inornatus var. inornatus R. D. Fischer 2004-6-12 162 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Rocky canyon edge of Humboldt Trail N of Bloody Pin Trail junction 412 Comment
  CHSC50792  Erigeron petrophilus var. sierrensis Vernon Oswald; Lowell Ahart 1990-7-31 4414 Butte Jeep Trail between Concow Rd and Rim Rd, ca. 2 mi northeast of Concow. 902 Comment
  UC1730242  Erigeron petrophilus var. sierrensis L. P. Janeway 1998-7-31 5906 Butte Lost Creek Reservoir dam, along dirt road 100 ft above N end of 981 Comment
  CHSC100522  Erigeron sumatrensis Lowell Ahart 2008-11-4 15397 Butte Below the high water line of Lake Oroville, about one mile southeast of the large parking area on the north end of Oroville Dam, about 5 miles (air) northeast of Oroville. 263 Comment
  CDA42965  Eriochloa acuminata var. acuminata L. Ahart 2013-10-12 19108 Butte On the east side of Palermo Honcut Highway, about 20 yards south of Palermo Road, Palermo. Comment
  CHSC58939  Eriogonum marifolium var. marifolium Lowell Ahart 1992-7-29 6892 Butte Around and on rocks, about 1 mile east of the Carr Mine, about 1/2 mile north-west of Lotts Lake. 1828 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
  CHSC63709  Eriogonum nudum var. oblongifolium Lowell Ahart 1994-10-16 7563 Butte Along both sides of the dirt road to the Forbestown Reservoir, near Woodleaf Creek, about 3/4 mile south-west of the Forbestown Reservoir Dam, about 2 miles (air) north and 3 1/2 miles east of Forbestown. 762 Comment
  JEPS117630  Eriogonum nudum var. oblongifolium Lowell Ahart 2010-9-12 17149 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
  UC849636  Eriogonum nudum var. pubiflorum A. A. Heller 1916-9-5 12664 Butte hills 8 mi n Oroville Comment
  CDA22637  Eriogonum nudum var. pubiflorum T. R. Haig 1962-7-8 Butte Teichert & Sons Construction Company, East 1st Avenue, Chico. 0 Comment
  CHSC13699  Eriogonum nutans 1946-6-24 Butte 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
  CHSC39088  Eriogonum spergulinum var. reddingianum R. A. Schlising; R. Banchero 1980-7-28 3931 Butte E of Jonesville in N part of county, on road to Scotts John Creek. 1889 Comment
  SD1345  Eriogonum ursinum E. B. Copeland 1930-7-6 Butte Jonesville, rocky ridge 2050 Comment
  CDA22694  Eriogonum vimineum T. R. Haig 1962-7-8 Butte Teichert & Sons Construction Company, East 1st Avenue, Chico. 0 Comment
  CHSC101995  Eriophyllum lanatum Brian H. McMurtry 1980-2-21 4 /25/1979 Butte Roadside, end of Chico Creek Road. 97 Comment
  SEINET10474638  Eriophyllum lanatum Mary Susan Taylor, Vernon H. Oswald 1985-5-30 Taylor 5519 Butte outcrop, 0.6 mi S of Coyote Gap, on open knoll at loop in French Creek Road, ca. 25 air mi NE of Oroville. Comment
  CHSC60818  Eriophyllum lanatum var. croceum Vernon H. Oswald; Lowell Ahart 1993-6-22 5557 Butte Head Dam Rd (120C), 0.5 mi NW of Powellton Rd., between Powellton and Clear Creek, N of De Sabla. 1091 Comment
  CHSC38346  Eriophyllum lanatum var. grandiflorum Vernon Oswald 1983-4-25 389 Butte Upper Bidwell Park, Chico, on the north rim ca. 0.4 mi w of the power lines. 182 Comment
  SFV3892  Eriophyllum lanatum var. grandiflorum M. L. Vincent 1960-9-8 94 Butte Sierra Nevada Paradise. In lot across street from 5330 Harrison Road. 525 Comment
  SEINET10475231  Eriophyllum lanatum var. grandiflorum Mary Susan Taylor 1980-4-19 Taylor 2535 Butte S side of Humbug, NE of Centerville. With J.D. Jokerst. 366 Comment
  CAS-BOT-BC301466  Eriophyllum lanatum var. integrifolium A. A. Heller 1917-7-26 12821 Butte Butte Meadows 1402 Comment
  UCD103123  Erodium brachycarpum A. A. Heller 1914-3-13 11201 Butte Hills 8 miles north of Oroville. Comment
  CHSC48454  Erodium moschatum Vernon Oswald 1984-3-2 1087 Butte Upper Bidwell Park, Chico, at the Rod and Gun Club. A weed along the west wall of the clubhouse. 102 Comment
  JEPS127005  Eryngium castrense Lowell Ahart 2016-5-24 20849 Butte About 200 yards west of Loma Rica Road, about 300 yards southwest of the intersection of Loma Rica Road and La Porte Road, about 3 1/2 miles (air) northeast of Honcut. Comment
  UCD127596  Eryngium castrense B. F. Smith 1969-4-15 93 Butte 2 miles south of Oroville. 74 Comment
  SEINET10939831  Eryngium vaseyi Mary Susan Taylor 1976-3-23 Taylor 1033 Butte Abundant in vernal pool, SW corner of junction of Broyles Road and Hwy 99, ca. 11 mi N of Chico. 61 Comment
  CHSC25463  Erysimum capitatum var. capitatum Hayes; Warner 1977-7-11 96 Butte Near Humboldt Summit (near Butte-Tehama county line), ca. 200 m down Pacific Crest Trail from the summit towards Humboldt Peak. 2011 Comment
  CHSC33186  Erysimum capitatum var. capitatum R. E. Preston 1981-6-2 78 Butte Rocky Ridge, ca. 3.2 km ne of Lake Concow, ca. 32 km n of Oroville. 1025 Comment
  CHSC112718  Erythranthe breweri Lowell Ahart 2013-10-26 19219 Butte South side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. 1681 Comment
  CHSC31914  Erythranthe cardinalis M. S. Taylor 1980-8-30 3325 Butte Along edge of dirt road in seeps, in Long Ravine, ca. 0.5 mi n of Oregon Gulch Rd, ca. 2 mi s of Oregon City on Table Mt, 8 mi n of Oroville. 243 Comment
  CHSC51017  Erythranthe cardinalis Lowell Ahart 1990-8-15 6581 Butte Along McCabe Creek, below the high water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 228 Comment
  CHSC94841  Erythranthe floribunda Lowell Ahart 2006-10-8 13430 Butte Near a large gravel bar, east side of the North Fork of the Feather River, just east of where the river flows into a pool, on the west side of Highway 70, about 1/2 mile north of the Cresta Power House. 609 Comment
  CAS-BOT-BC153860  Erythranthe glaucescens A. A. Heller; H. E. Brown 1902-5-6 5461 Butte Berry Canyon (Near Clear Creek) Comment
  CAS-BOT-BC153867  Erythranthe glaucescens Frank W. Gould 1938-4-23 304 Butte Two miles north of Chico 60 Comment
  CHSC27272  Erythranthe glaucescens P. Moyer 1972-4-16 173 Butte CSUC Campus. S. bank Chico Ck., e of Warner St. Bridge. 60 Comment
  CHSC82612  Erythranthe glaucescens Tara Morgan 2002-4-23 34 Butte Found along the walking down the south rim trail located on the east side of Big Chico Creek. Located down from the green gate and left at the split in the trail to a seep area. 389 Comment
  OBI9413  Erythranthe glaucescens Robert F. Hoover 1968-5-29 11137 Butte Cohasset Rd Comment
  SEINET8340802  Erythranthe glaucescens Sandra C. Morey 1978-4-10 17 Butte highway 32, ca. 7.5 mi e of junction with Highway 99 at Chico. 515 Comment
  CHSC44681  Erythranthe guttata R. Banchero 1980-4-19 121 Butte Along Lumpkin Rd ca 1.1 mi NE of the Enterprise Bridge, Ca 0.3 mi from the jct of Lumpkin and Enterprise Rds. 353 Comment
  CHSC44984  Erythranthe nasuta Martin Devanna 1987-4-3 8 Butte Ca. 4 mi ne of Chico. N bank of Big Chico Creek. 198 Comment
  CHSC98996  Erythranthe nasuta Lowell Ahart 2008-5-21 14774 -A Butte Damp to dry bare granite soil, below the high water line of Lake Oroville, on the north and south side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 246 Comment
  CHSC11895  Erythranthe primuloides E. B. Copeland 1930-7-15 460 Butte Jonesville. 1500 Comment
  CHSC105187  Erythranthe pulsiferae B. Castro; L. P. Janeway 1999-8-1 1024 Butte NE shore of Summit Lake, ca 0.7 mi NE of Snow Mtn. 1886 Comment
  CHSC54310  Erythranthe pulsiferae Vernon H. Oswald; Lowell Ahart 1991-6-5 4642 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 Platt Mtn Lookout, between Forest Ranch and Lomo. 792 Comment
  SEINET8399970  Erythranthe rubella E. B. Copeland 1930-6-28 461 Butte Jonesville; in "Scotch John" meadows. 1700 Comment
  UCD139638  Erythronium citrinum M. S. Taylor; D. Hemphill 1981-3-18 3422 Butte From bridge crossing West Branch Feather River, ca. 1/2 mile east and south along Pondersoa Way (Jordan Hill Road) and both banks of the river. Ca. 1 mile northeast of Magalia. Comment
  CAS-BOT-BC504522  Erythronium multiscapideum Mrs. J. H. Morrison 1931-3-20 s.n. Butte Durham Comment
  CAS-BOT-BC504540  Erythronium multiscapideum Jim Riley 1923-3-23 s.n. Butte About 3 miles above Centerville Comment
  SBBG70183  Eschscholzia caespitosa A. A. Heller 1927-4-7 14336 Butte Salmon Hole on Chico Crk, E of Chico Comment
  CHSC76951  Eschscholzia californica Margie Collins 1894-5-1 Butte Chico. Comment
  CAS-BOT-BC419498  Eschscholzia lobbii H. E. Brown 1897-4-15 149 Butte Near Clear Creek 53 Comment
  CHSC10656  Eschscholzia lobbii Lowell Ahart 1969-3-27 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC36181  Eschscholzia lobbii John J. Krajanowski 1981-4-14 13 Butte Beatson Hollow, 3/4 mi w of Cherokee Road and 6 mi n of Oroville. 316 Comment
  HSC92486  Eschscholzia lobbii N. Wynne, M. Peckham, J. Bamesberger 1994-3-30 24 Butte Table Mtn., Cherokee Rd., about 2 mi. from Hwy. 70 Comment
  SEINET10476227  Eschscholzia lobbii Mary Susan Taylor 1975-4-26 Taylor 509 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
  UC85481  Eschscholzia lobbii Mrs. R. M. Austin Feb. 1896 Butte Chico Plains Comment
  CHSC6007  Eucalyptus nicholii M. MacArthur 1968-6-19 250 Butte Lawn in front of Administration bld. Chico State College. 60 Comment
  SEINET10453765  Euphorbia hooveri Mary Susan Taylor 1980-1 Butte Comment
  CHSC104841  Euphorbia maculata Lowell Ahart 2010-6-25 16838 Butte In the planter areas, in the parking area at Bidwell Mansion, Chico. 60 Comment
  SEINET10906849  Euphorbia maculata Lowell Ahart 1984-8-19 Ahart 4786 Butte West of Pacific Heights Road, about 5 miles south-west of Oroville. Comment
  CAS-BOT-BC202420  Euphorbia ocellata Lowell Ahart 1989-5-23 6256 Butte Along the edges of Avocado Road, about 1/2 mile west of the Oroville Bangor Highway, about 1 mile north-west of Bangor 213 Comment
  CAS-BOT-BC202419  Euphorbia ocellata Lowell Ahart 1976-7-4 s.n. Butte Peter Ahart Ranch, Honcut 150 Comment
  SD126343  Euphorbia serpillifolia Lowell Ahart 1985-10-12 5200 Butte End of Nelson Bar Road, south of Kunkle Reservoir, South of Paradise 298 Comment
  UC1586603  Euphorbia spathulata Vernon H. Oswald and Lowell Ahart 1991-5-11 4576 Butte Loafer Creek Recreation Area Lake Oroville (along Roy Rodgers Trail, near the group camps) 341 Comment
  CAS-BOT-BC310672  Euthamia occidentalis Lowell Ahart 1987-8-3 5844 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC42756  Euthamia occidentalis Lowell Ahart 1987-8-3 5844 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC94615  Euthamia occidentalis Lowell Ahart 2006-9-11 13275 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
  CHSC113429  Fallopia convolvulus Lowell Ahart 2014-7-7 19558 Butte About 5 yards east of the Skyway, about one-mile north of Stirling City. 1142 Comment
  CHSC27705  Festuca californica Robert A. Schlising; Coleta Lawler 1978-5-27 3280 Butte Magalia; serpentine outcrop just S of Magalia Reservoir and W of S.T. Rr and Coutelenc Road. Comment
  CHSC98657  Festuca californica B. Castro; L. P. Janeway 2005-8-9 1525 Butte Ca 20 air mi NNE of Oroville and 2 mi S of Flea Mtn, along Rim Rd ca 1 mi SE of its jcn with Concow Rd. On uphill edge of road, on NE-facing slope. 987 Comment
  CHSC109857  Festuca californica var. californica L. P. Janeway 2012-6-7 10870 Butte Northern High Sierra Nevada. Southwestern spur of Rocky Ridge, 0.6 air km south of Batchelor Point; along Road 23N06E 0.8 road km southeast of Rim Road/Ponderosa Way. 895 Comment
  UCR177719  Festuca microstachys var. ciliata Lowell Ahart 2006-5-10 12619 Butte north side of the poor dirt road, Bardees Bar Road, about 100 yards north of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2.5 miles (air) southwest of Pulga 355 Comment
  CHSC109625  Festuca myuros Lowell Ahart 2012-6-17 18081 Butte On the north side of Big Chico Creek, southeast of Table 21, south of the paved park road, northeast of the Deer Pen, Lower Bidwell Park, Chico. 73 Comment
  CHSC94285  Festuca occidentalis Lowell Ahart 2006-7-16 12977 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
  SEINET11672004  Festuca subulata Unknown 1983-1 4107 Butte along Ponderosa Way ca 0.12 mi E of int Oroville Quincy Hwy & Ponderosa Way, ca 15 mi NE of Oroville Comment
  CHSC60868  Festuca subuliflora Vernon H. Oswald; Lowell Ahart 1993-6-22 5563 Butte Long Ravine W of Stirling City, along Hendricks Canal ca. 0.25 mi S of the Diversion Dam. 950 Comment
  CHSC38927  Fimbristylis autumnalis Vernon Oswald 1983-7-25 911 Butte Bidwell State Park, w of the parking area at the boat ramp, River Rd. near the washout. Comment
  JEPS120064  Fraxinus Lowell Ahart, Josephine Guardino 2012-10-12 18480 Butte About 100 yards northeast of the sign Orient Street and E 1st Street, on the south side of Brig Chico Creek, on the east side of the bridge, Annie's Glen, Lower Bidwell Park, Chico. Comment
  CHSC42761  Fraxinus latifolia Lowell Ahart 1987-8-3 5849 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 274 Comment
  SEINET10457425  Fraxinus latifolia Mary Susan Taylor 1975-5-6 Taylor 556 Butte Campus of California State University Chico, along creek between bridge between Holt Hall and Butte Hall, and bridge between Holt Hall and Chemistry Bldg; Riparian Woodland. 61 Comment
  CAS-BOT-BC130313  Fritillaria eastwoodiae L. C. Hanson 1987-4-27 s.n. Butte De Sabla Reservoir, near Magalia Comment
  CAS-BOT-BC130320  Fritillaria eastwoodiae A. A. Heller 1939-4-8 15367 Butte About 4 miles from Magalia on the Coutoleno Road Comment
  CAS-BOT-BC505284  Fritillaria micrantha Lowell Ahart 1980-3-26 2058 Butte Near Hurleton. Comment
  CAS-BOT-BC505286  Fritillaria micrantha Lowell Ahart 1983-4-14 3933 Butte On east side of Woodleaf Creek above the road, about 3/8 mile south-west of the Forbestown Res., about 4 miles north-east of Forbestown. 450 Comment
  CHSC93456  Galium aparine Lowell Ahart 2006-5-8 12597 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
  RSA713006  Galium aparine L. Ahart 2006-5-8 12597 Butte 50 yards E of the fence and reservoir, 2.25 miles W of the parking area, cow chute, and Cherokee Road, N Table Mtn, 7 miles air N of Oroville. 296 Comment
  CHSC47047  Galium bifolium R. A. Schlising; L. Janeway 1988-7-16 4605 Butte N part of county, S of Humbug Summit at upper reaches of Willow Creek. 1950 Comment
  UC195388  Galium bolanderi A. A. Heller 1914-7-24 11627 Butte slopes near Forest Ranch 731 Comment
  CAS-BOT-BC26139  Galium grayanum A. A. Heller 1914-8-7 11668 Butte Summit back of Jonesville, on the north side of the pass. Comment
  SEINET10902547  Galium grayanum Mary Susan Taylor 1979-7-21 Taylor 2150 Butte Humboldt Peak, at Humboldt Summit, tallest point in the county, on Butte- Tehama County line. 2155 Comment
  SEINET10902549  Galium murale Mary Susan Taylor 1978-4-14 Taylor 1551 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
  CHSC36511  Galium parisiense L. Ahart 1982-5-29 3446 Butte Peter Ahart Ranch, ca. 1.5 mi N and 2 1/4 mi E of Honcut. 50 Comment
  CHSC93858  Galium parisiense Lowell Ahart 2006-6-9 12651 Butte On the east side of Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 403 Comment
  CHSC55586  Galium porrigens var. tenue Dan Morgan 1991-4-21 19 Butte Indian Springs Rd., .3 mi W of Neal Rd., Paradise. 243 Comment
  CHSC77996  Galium tricornutum Lowell Ahart 2000-5-13 8453 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
  CHSC33968  Galium trifidum var. pusillum M. S. Taylor; L. Ahart 1981-8-15 4187 Butte Ca. 14 mi NE of Stirling City. 1737 Comment
  CHSC99567  Galium triflorum L. P. Janeway 2008-6-22 9430 Butte Northern High Sierra Nevada. Along Four Trees Road at crossing of South Branch Mill Creek (a tributary to North Fork Feather River); 2.7 air km east of Pulga Bridge (Hwy 70) over North Fork Feather River. On moist banks. 823 Comment
  UCD121950  Galium triflorum L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  POM183175  Garrya fremontii H. F. Copeland 1930-7-26 1338 Butte Neighborhood of Jonesville, by Government Trail. 1677 Comment
  CHSC102162  Gastridium phleoides Lowell Ahart 2009-6-19 15931 Butte On dry rocky soil, on the sides of the cutoff trail, on the south side 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
  CHSC56630  Gastridium phleoides T. B. Devine 1980-6-28 717 Butte At junction of Pentz Road and Pentz-Magalia Hwy. Comment
  CHSC93870  Gastridium phleoides Lowell Ahart 2006-6-9 12652 Butte On the east side of Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 403 Comment
  SEINET11688674  Gastridium phleoides Unknown 1982-1 424 Butte at beginning of North Rim Trail, upper Bidwell Park ca 1 mi from East Ave, Chico Comment
  UC579315  Gastridium ventricosum P. L. Johannsen 1935-5-27 677 Butte four mi se Chico; Chico Quad. 83 Comment
  CHSC37449  Gayophytum humile R. A. Schlising; R. Banchero, D. Ikeda 1980-6-26 3787 Butte 3.2 miles se of Butte Meadows on Bull Hill Road (= Skyway). In small meadows along Bull Creek. 1511 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
  JEPS121941  Gayophytum racemosum Lowell Ahart 2014-7-7 19602 Butte On the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CHSC3210  Genista monspessulana Susan Carrauthers 1966-4-23 139 Butte Ca. .5 mi. N of city of Magalia. Comment
  CHSC46705  Gentiana newberryi var. tiogana V. Oswald; L. Ahart 1989-8-22 3956 Butte Butte Creek House Meadow on the e side of Humbug Rd, ca. 3.5 mi (air) se of Jonesville. 1767 Comment
  CHSC98965  Geranium Lowell Ahart 2008-5-12 14762 Butte On the east side of Ponderosa Way, about 1 mile (air) southwest of the Ponderosa Dam, about 2 1/4 miles (air) northwest of Forbestown. 670 Comment
  CDA42876  Geranium carolinianum L. Ahart 2012-5-14 18064 Butte On the north side of the paved path, near the horse sign, south of Vallombrosa Avenue, west of Manzanita Avenue, Lower Bidwell Park, Chico. Comment
  RSA0028177  Geranium carolinianum L. Ahart 2012-4-30 17945 Butte South side of the path near the sign, southwest of the intersection of Vallombrosa Avenue and Manzanita Avenue, Lower Bidwell Park. 81 Comment
  RSA0028180  Geranium carolinianum C. C. Bruce 1898-05 1937 Butte Little Chico Comment
  CHSC113207  Geranium dissectum Lowell Ahart 2014-4-25 19399 Butte Sides of a cleaned ditch, on the west side of Richvale South Highway, south of the intersection of Richvale South Road and Richvale South Highway, Richvale. 30 Comment
  UCR237321  Geranium dissectum George K. Helmkamp, E. A. Helmkamp 2012-4-14 18739 Butte Northern Sacramento Valley, Middle Honcut Road, 1.5 miles east of CA-70, ESE of Gridley 18 Comment
  CDA34151  Geranium molle L. Ahart 2009-4-3 15530 Butte Chico: East of the Cedar grove Parking Area in Lower Bidwell Park. Comment
  CHSC101272  Geranium molle Lowell Ahart 2009-4-3 15530 Butte Along margins of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico. 67 Comment
  CHSC10752  Geranium molle Lowell Ahart 1970-4-4 Butte Peter Ahart Ranch, Honcut. 45 Comment
  HSC100781  Geranium purpureum Lowell Ahart 2008-5-12 14762 Butte E side of Ponderosa Way, 1 (air) mi. SW of Ponderosa Dam and ~2 1/4 mi. NW of Forbestown. 671 Comment
  CHSC52103  Gilia capitata subsp. pedemontana Steven Triano 1987-4-6 29 Butte Ca. 6 ft n of Honey Run Rd. ca. 3.0 mi e of the Skyway in se Chico. 79 Comment
  POM225868  Gilia capitata subsp. pedemontana J. H. Morrison 1932-4-10 s.n. Butte Durham Comment
  SEINET11268216  Gilia leptalea subsp. leptalea Lowell Ahart 1993-6-26 7035 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam.; 0 1158 Comment
  SEINET10837194  Gilia tricolor Mary Susan Taylor 1980-3-1 Taylor 2350 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
  UCD14392  Gilia tricolor Maura Cullinane 1983-4-1 5 Butte Butte Co.; from Interstate 80 go north onto 99, pass Chico, take the Cohasset exit NE, turn right on Richardson's Springs Road, drive form 3 mi. to Springs of Living Water Camp; cabins off to the right, go ca. 100 ft. east of Cabin 17; Comment
  UCSB63625  Gilia tricolor Williges, Curtis 1986-3-22 Butte Humboldt Rd., ca. 3.5 mi. ENE of Chico; Chico Quadrangle, 7.5'. E central border of Sect. 21, T22N, R2E 182 Comment
  CAS-BOT-BC266593  Githopsis pulchella Clarence R. Quick 1952-6-25 52 -64 Butte 21.5 miles from Chico on Deer Creek Road Comment
  CHSC103966  Githopsis pulchella subsp. campestris Lowell Ahart 2010-5-7 16616 Butte On the north side of a trail, west of disk golf area, on a ridge about 350 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 353 Comment
  CHSC2433  Githopsis pulchella subsp. campestris R. Carter 1965-5-15 201 Butte Found on E side of Hwy. 32, 10.7 mi. NE of 99E overpass at Chico, growing on dry rocky hillside 25' from road. 304 Comment
  CHSC50106  Githopsis pulchella subsp. campestris Vernon Oswald 1990-4-24 4170 Butte Lime Saddle Recreation Area on the West Branch of Lake Oroville, ca. 0.2 mi northeast of Nelson Bar Launch, ca. 0.2 mi east of Lime Saddle Powerhouse. 292 Comment
  SEINET10460575  Githopsis pulchella subsp. campestris A. Arthur Heller 1941-5-9 Heller 16106 Butte Clark road, gravelly slope foot of the Paradise grade Comment
  SEINET10464591  Githopsis specularioides Watts 1974-4-30 Watts 29 Butte About 15 miles northeast of Chico on Cohasset road Comment
  CHSC24987  Gleditsia triacanthos Cark Pejsa 1976-3-21 Butte Bidwell Park Forestry Station. Comment
  UC1563266  Glinus lotoides unknown 1990-10-5 Butte below the high water line of Lake Oroville (about 1/4 mi sw of the Enterprise Bridge across Lake Oroville, on bottom of McCabe Creek); McCabe Creek 228 Comment
  CAS-BOT-BC435022  Glinus radiatus C. C. Parry No date on label s.n. Butte Chico Comment
  CHSC61370  Glyceria elata Lowell Ahart 1993-7-22 7090 Butte Along the edge of Fall River, on the west side of the campground road, about 1/4 mile north-west of the bridge across Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  CDA28229  Glyceria elata T. C. Fuller 1962-7-12 9184 Butte 2 miles east of Butte Meadows, road to Jonesville, bottomland of Butte Creek 0 Comment
  RSA715578  Gnaphalium luteoalbum L. Ahart 2005-4-14 11713 Butte About 200 feet east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  CHSC113155  Gnaphalium palustre Lowell Ahart 2013-11-13 19228 Butte Below the high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 244 Comment
  CHSC90820  Gnaphalium palustre Lowell Ahart 2005-5-2 11753 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
  RSA4455  Gnaphalium palustre E. B. Copeland 1931-7-18 694 Butte Jonesville. 1500 Comment
  SFV11414  Grindelia camporum M. L. Vincent 1963-6-10 423 Butte Kunkel Reservoir. 4 miles south of Paradise. 0.5 miles off Pentz Road. 450 Comment
  CDA13734  Grindelia hirsutula var. davyi G. F. Hrusa, T. D. Wilfred 1997-6-27 13915 Butte Sierra Nevada; Feather Falls/Cascade Rd. Comment
  CHSC28513  Grindelia hirsutula var. davyi M. S. Taylor; J. D. Jokerst 1979-10-13 2262 Butte On Jordan Hill Rd, ca. 5.3 mi n of its jct with Concow Rd, ca. mi e of Paradise. 609 Comment
  CHSC97732  Grindelia hirsutula var. davyi Lowell Ahart 2007-11-3 14576 Butte On both sides of the paved road to the Lime Saddle Campground, about 1/4 mile east of Pentz Road, about 1/2 mile southeast of the power house below Kunckle Reservoir, about 5 1/2 miles southeast of Paradise. 335 Comment
  RSA754527  Grindelia hirsutula var. davyi L. Ahart 2009-8-3 16263 Butte E side of Big Chico Creek, about 30 yards S of the gate, in the middle of Ten Mile House Road, Upper Bidwell park, about 3/4 air miles W of Highway 32, about 10 miles NE of Chico. 270 Comment
  UC1586558  Guillenia lasiophylla Lowell Ahart 1991-5-8 6650 Butte about 1.5 mi n and 2.25 mi e Honcut (about 12 mi se of Oroville, Peter Ahart Ranch) 60 Comment
  RSA4125  Hackelia californica E. B. Copeland 1930-6-29 449 Butte Jonesville. 1550 Comment
  CHSC37412  Hackelia micrantha R. A. Schlising 1982-7-21 4331 Butte Meadow n of Philbrook Res. in n part of county. 1706 Comment
  POM110256  Hastingsia alba C. C. Bruce 1892-06 2434 Butte [no location specified] Comment
  CHSC28541  Hazardia whitneyi M. S. Taylor; J. D. Jokerst 1979-10-13 2269 Butte Jordan Hill Rd, near Sawmill Peak, ca. 9.2 mi n of its jct with Concow Rd, ca. 2 mi e of Magalia. 944 Comment
  JEPS120073  Hedera helix Lowell Ahart 2012-10-20 18489 Butte On the north side of the paved park road and south of Big Chico Creek, about 50 yards east of Table 5, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC30790  Hedypnois cretica M. S. Taylor; L. Ahart 1979-5-6 2005 Butte Peter Ahart Ranch, Honcut. 15 Comment
  SD5775  Helenium bigelovii E. B. Copeland 1930-7-11 Butte Jonesville 1500 Comment
  CHSC102740  Helenium puberulum Lowell Ahart 2009-8-3 16258 Butte About 50 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 miles (air) west of Highway 32, about 10 miles northeast of Chico. 209 Comment
  CHSC110325  Helenium puberulum B. Castro; Margie Graham 2006-9-7 1609 Butte Sacramento Valley. Ca 1.75 mi W of Highway 99 and 1.3 mi ENE of Richvale and ca 0.4 mi N of Richvale Hwy in Cherokee Canal.. On E side of canal abt 120 ft in from toe of W levee. 32 Comment
  CHSC35991  Helianthella californica var. nevadensis J. D. Jokerst 1982-5-8 1567 Butte N of Forbestown along Ponderosa Way 3/10 mi. N of its jct with Lower Forbestown Rd. Comment
  CHSC76121  Helianthus bolanderi G. F. Hrusa 1997-8-5 14066 Butte Sierra Nevada. Grown in Woodland. Magalia. Immed. N of Magalia Reservoir in N hillside above Little Butte Creek. Accessed off Holmwood Rd. Comment
  RSA771482  Helianthus bolanderi George K. Helmkamp, E. A. Helmkamp 2009-9-5 15581 Butte 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
  CHSC39360  Heliotropium europaeum L. Ahart 1983-9-17 4426 Butte East end of Kunkle Reservoir Dam, south of Paradise. 600 Comment
  SEINET10902879  Heliotropium europaeum Mary Susan Taylor 1974-10-11 Taylor 329 A Butte Along Sacramento River, in vicinity of the washout on River Road, ca. 10 mi W of Chico. Riparian Woodland. 61 Comment
  CAS-BOT-BC309785  Hemizonia congesta subsp. luzulifolia A. A. Heller 1916-9-9 12653 Butte Near Durham Comment
  CHSC26762  Hemizonia congesta subsp. luzulifolia M. S. Taylor; M. Hayes 1977-8-16 1445 Butte On s side of Pentz Rd near culvert, ca. 1.2 mi e of jct of Pentz Rd and Hwy 99, ca. 15 mi s of Chico. 60 Comment
  CHSC51855  Hemizonia congesta subsp. luzulifolia L. P. Janeway 1986-10-19 1943 Butte Between hwy 99 and Thermalito Forebay Picnic Ground. 67 Comment
  UCR219268  Hemizonia fitchii George K. Helmkamp, E. A. Helmkamp 2009-9-5 15585 Butte Sacramento Valley, Lower Honcut Road, 0.9 rd. mi. west of Honcut, 7.8 mi. SE (111 deg. ) of Gridley 34 Comment
  SEINET10971133  Hemizonia luzulifolia subsp. rudis Mary Susan Taylor 1977-8-16 Taylor 1435 Butte Abundant in Valley Grassland, near cul vert in natural drainage, ca. 1.2 mi E of junction of Pentz Road and Hwy 99, ca. 15 mi S of Chico. 61 Comment
  CAS-BOT-BC388569  Herniaria hirsuta L. P. Janeway 1993-6-3 4367 Butte Plumas National Forest, Oroville Ranger District. South end of Swayne Hill, along the road to Big Bar Mtn (23N28) 731 Comment
  CAS-BOT-BC310156  Hesperevax caulescens Peter H. Raven 1963-5-8 18363 Butte On State Highway 32, 5 miles west of Chico Comment
  UCD80069  Hesperevax caulescens CNPS SN Foothill Team 2005-4-14 SNFN 0032 b Butte Private Rock Ranch, pasture about 120 m south of the ranch house and about 15 m east of the ephemeral creek running through the property. 95 Comment
  CAS-BOT-BC176219  Hesperolinon disjunctum Mrs. J. H. Morrison 1932-6-5 s.n. Butte Durham Comment
  RSA325952  Hesperolinon micranthum L. Ahart, P. Ahart 1983-6-21 s.n. Butte Along Bloomer Hill Rd., ca. 1.3 mi. w. of Oroville-Quincy Hwy., ca 15 mi. ne of Oroville. 450 Comment
  CDA36314  Heteranthera limosa CDFA Staff 1988-1 Butte Biggs; Rice Experimental Station. 0 Comment
  RSA755270  Heterocodon rariflorum L. Ahart 2009-5-15 15699 Butte About 60 yards NW of the dirt road that is Ten Mile House Road, Upper Bidwell Park, about 2/3 air mile W of Highway 32, about 10 miles NE of Chico. 268 Comment
  UC600502  Heterocodon rariflorum H. F. Copeland 1927-9-4 945 Butte Jonesville Comment
  SEINET10460697  Heterocodon rariflorum Taylor 1978-7-21 Taylor 1828 Butte On south side of Orovile-Quincy Highway along creek in meadow, about 14 miles north of Lake Madrone 1463 Comment
  SEINET10460699  Heterocodon rariflorum Edwin B. Copel 1929-7-16 Copeland 398 Butte Jonesville 1550 Comment
  CHSC13840  Heteromeles arbutifolia S. Posner 1972-10-12 Butte South slope Big Chico Creek, across from Golf Course, near firing range, Bidwell Park, Chico. Comment
  RSA719537  Heteromeles arbutifolia Michael A. Vincent, K. Levings 2006-7-29 12882 Butte E of Chico along Rt 32 Comment
  CHSC96062  Heterotheca oregona var. compacta L. P. Janeway 2006-10-4 8900 Butte Sacramento Valley. Oroville Wildlife Area; 150 m east of Feather River, on west bank of narrow slough; 1.7 km south-southeast of the Thermalito Afterbay outlet. 32 Comment
  CAS-BOT-BC311024  Heterotheca oregona var. compacta Lowell Ahart 1981-7-18 2940 Butte About 4.5 miles southeast of Oroville 35 Comment
  CHSC24661  Heuchera micrantha var. erubescens Keith Lickey; Deanna Lickey 1974-4-16 61 Butte Ca. 2 km sw of Dogwood Creek, sw side of Pulga Road, ca. 2 km ne of Pulga, off Hwy 70. 914 Comment
  UCR146292  Hibiscus lasiocarpos Ellen Dean, Et al. 2001-8-20 870 Butte E of the Sacramento River, N of Sutter Buttes, along hwy 162, c. 3 road miles east of the intersection of Eureka St. and Hwy 162, in the town of Butte 30 Comment
  CAS-BOT-BC203379  Hibiscus lasiocarpos var. occidentalis John Thomas Howell; Thos. H. Kearney 1955-9-6 30707 Butte Butte Creek on road from Butte City to Oroville Comment
  CHSC51353  Hieracium scouleri var. scouleri Vernon Oswald 1990-7-10 4358 Butte Feather Falls Trail between California Nutmeg Spring and Fall River, ca. 4 mi north of the town of Feather Falls. 603 Comment
  CAS-BOT-BC55333  Hirschfeldia incana Lowell Ahart 1985-7-24 5157 Butte At the Generator, at the Forbestown Reservation, about 4.5 miles northeast of Forbestown. 350 Comment
  UC924222  Hoita macrostachya H. S. Reed 1939-7-10 295 Butte nw Chico; Sacramento River 57 Comment
  CHSC40422  Hoita orbicularis Lowell Ahart 1985-7-24 5150 Butte East of the dirt road to the Forbestown Res., about 2 1/2 miles north-east of Forbestown. 868 Comment
  CHSC960  Hoita orbicularis M. Underhill; R. Staley 1952-7-3 Butte Paradise. 548 Comment
  CHSC58888  Holozonia filipes Lowell Ahart 1992-7-23 6833 Butte On the bottom and sides of Oregon Gulch, north of the Thermalito Diversion Pool, Lake Oroville Recreation Area, about 1 1/4 miles north-west of Oroville Dam. 91 Comment
  SD149201  Hordeum brachyantherum Lowell Ahart 1981-5-24 2836 Butte Peter Ahart Ranch, ca. 1.5 mi. N and 1/15 mi. E of Honcut, Valley Grassland 49 Comment
  JEPS93844  Hordeum brachyantherum subsp. brachyantherum Lowell Ahart 1998-6-9 7993 Butte about 7 air mi n of Oroville (about 3/8 mi nw of the Ione oak tree, nw of the cow chute along Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 388 Comment
  UC1609263  Hordeum brachyantherum subsp. brachyantherum Lowell Ahart 1993-5-15 6942 Butte near bridge of Biggs Princeton Road about 3 mi w Biggs (Cherokee Canal); Cherokee Canal 30 Comment
  HSC92444  Hordeum depressum L. Ahart 1981-5-16 2807 Butte Gray Lodge Waterfowl Management Area, 12 mi. SW of Gridley 30 Comment
  CHSC20460  Hordeum murinum subsp. glaucum Dave Isle 1969-4-10 306 Butte Just off the E. side of the River Road about 1 mile S. of the River Road-HW 32 intersection. 59 Comment
  CHSC101126  Hordeum murinum subsp. leporinum Lowell Ahart 2009-5-8 15671 Butte On the south side of the grave road, about 10 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico. 67 Comment
  CHSC8218  Hordeum murinum subsp. leporinum Dave Isle 1969-3-21 260 Butte Just off the S. side of the road through Upper Bidwell Park about 50 yards W. of the entrance to the golf course (E. of Chico). 59 Comment
  CHSC4400  Hordeum vulgare R. Jaegel 1966-5-9 Butte Across the street from the Ed.-Psy. Building CSC. Chico. Comment
  CHSC9345  Hordeum vulgare B. Anthony 1968-4-15 459 Butte 3 miles W. of Hamilton City on Hwy. 32. Comment
  CHSC42332  Horkelia californica subsp. dissita Lowell Ahart 1983-6-21 4101 Butte Along a seep at the edge of Bloomer Hill Road, ca 3 mi nw of Oroville-Quincy Hwy, ca 16 mi ne of Oroville. 700 Comment
  CHSC71189  Horkelia californica subsp. dissita Lowell Ahart 1998-6-30 8012 Butte Margins of a seep, southwest 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
  CHSC48849  Horkelia fusca subsp. parviflora Vernon Oswald 1985-7-2 1882 Butte Skyway (Bull Hill Rd.) at Coon Creek, 5.5 mi se of Butte Meadows. On bank of creek in a meadow. 1554 Comment
  SEINET11907302  Horkelia tridentata L. S. Rose 1939-1 39231 Butte 2 mi NE of Clipper Mills 1173 Comment
  CHSC42556  Hosackia oblongifolia var. oblongifolia Lowell Ahart 1987-5-27 5709 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 274 Comment
  CHSC112456  Hosackia stipularis var. ottleyi Lowell Ahart 2013-5-18 18699 Butte Under the cleared poleline, about 50 yards southwest of the intersection of Forbestown Road and Black Bart Road, about 3 1/4 miles (air) southwest of Forbestown. 763 Comment
  CHSC8748  Hydrocotyle verticillata S. Chulasmai 1966-5-20 40 Butte Upper Bidwell Park roadside [Helocsirge spring]. Comment
  CHSC39098  Hydrophyllum occidentale R. A. Schlising 1982-5-19 4243 Butte Lumpkin Ridge, ne of village of Feather Falls. 1280 Comment
  CAS-BOT-BC400823  Hypericum anagalloides Lowell Ahart 1974-8-14 s.n. Butte Along North Honcut Creek, Peter Ahart Ranch, Honcut 45 Comment
  CAS-BOT-BC400829  Hypericum anagalloides A. A. Heller 1916-9-8 12652 Butte Ten mile house east of Chico Comment
  CHSC113509  Hypericum anagalloides Lowell Ahart 2014-7-16 19679 Butte Northeast of a large wet meadow (some bog), about 60 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CHSC28820  Hypericum anagalloides J. D. Jokerst; T. B. Devine, D. Greenstein 1979-9-13 412 Butte Top of North Table Mt, 100 m NW. of the intersection of Cherokee Rd and east edge of section 17. 396 Comment
  SD3069  Hypericum anagalloides E. B. Copeland 1929-7-16 Butte Jonesville 1550 Comment
  JEPS113169  Hypericum concinnum Lowell Ahart 2007-5-29 13925 Butte Near the southeast edge of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 1/2 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. Comment
  CAS-BOT-BC401220  Hypericum perforatum Lowell Ahart 1987-7-17 5823 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CDA31955  Hypochaeris glabra L. Ahart 2009-5-8 15654 Butte On the south side of the gravel road, about 10 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico. Comment
  CHSC67203  Idahoa scapigera James D. Jokerst 1992-4-14 3346 Butte Stone Ridge Ranch. E of Cohasset Hwy. and Chico Municipal Airport, S of barn on ridge top. 91 Comment
  UC600658  Ipomopsis aggregata H. F. Copeland 1928-8-14 Butte Jonesville Comment
  UC600659  Ipomopsis aggregata unknown 1920-7-29 151 Butte Jonesville Comment
  RSA136683  Iris hartwegii Lee W. Lenz, E. K. Balls 1957-5-23 22528 Butte 3 mi. SE from turnoff, Hwy 32 to De Sabla. 671 Comment
  CHSC88058  Iris hartwegii subsp. hartwegii R. D. Fischer 2004-5-30 184 Butte Northern Sierra Nevada, 4-5 airmiles n. of Paradise, and w. of upper Paradise Pines. Turn w. off Skyway Road on Nimshew Road, ca. 2 miles down this rd. at a private residence. UTM: 10618179E 4410379N. 751 Comment
  CHSC2812  Iris macrosiphon David Prall 1965-3-14 Butte At roadside ca. 3 yds. west of Neal Rd. 2 miles east of Highway 99E. 152 Comment
  CHSC9276  Iris macrosiphon D. C. Burns 1971-3-17 102 Butte 5 yds. n side of Honey Run rd., ca. 2.3 mi e of the intersection of Honey Run rd. and the Skyway. 91 Comment
  UC143451  Iris macrosiphon Mrs. R. M. Austin Mar 1896 13 Butte Little Chico Creek Comment
  SEINET3876026  Iris macrosiphon Cathryn Bakken 1969-4-19 18 Butte Bridle Path, Sycamore Hill.; 0 Comment
  SEINET10932892  Isoetes howellii Mary Susan Taylor 1980-5-24 Taylor 2738 Butte Peter Ahart Ranch, Honcut. 50 Comment
  SEINET3863772  Isoetes howellii Alv Dan Youngberg 1968-4-13 901 Butte On Table Mountain above Oroville.; 0 Comment
  JEPS104158  Isoetes nuttallii Lowell Ahart 2003-4-15 10094 Butte Ca 70-100 feet sw of the section corner pipe, ca 1/8 mi sw of the tall Digger Pine on the S edge of Beatson Hollow, ca 1 1/4 mi nw of the iron gate and fence, nw of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 299 Comment
  JEPS127198  Isoetes nuttallii Lowell Ahart 2016-5-24 20850 Butte About 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 4 1/4 miles (air) northeast of Honcut. Comment
  SEINET10874661  Isoetes nuttallii Mary Susan Taylor 1980-4-6 Taylor 2438 Butte T8N R5E ec border sec 3. Junction of Rocky Honcut Creek and Swedes Flat Rd, ca. 2 mi E of Oroville-Bangor Hwy, ca. 10 mi SE of Oroville. With L. Ahart & J.D. Jokerst. 366 Comment
  CHSC61514  Isolepis setacea Lowell Ahart 1993-7-6 7046 Butte Along a seep on the south side of the dirt road, about 1/4 mile west of the Lost Creek Reservoir. 1036 Comment
  CAS-BOT-BC112644  Isolepis setacea Lowell Ahart 1989-5-28 6285 Butte South of Oregon Gulch road, ca. 1/2 mi N of the Cemetery, ca. 1 1/4 mi W of Rocky Point 335 Comment
  SEINET10475594  Isomeris arborea var. globosa Mary Susan Taylor 1982-8-28 Taylor 4377 Butte T17N R1E nw/sw 14. Pennington quad. Graylodge Wildlife Refuge, HQ center, ca. 12 mi sw of Gridley. 65 ft. 20 Comment
  SEINET10536078  Isopyrum occidentale Mary Susan Taylor 1981-3-24 Taylor 3448 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
  JEPS114387  Jensia rammii Lowell Ahart 2008-6-13 14823 Butte Bottom of an old gold mined area, about 350 yards southwest of the cemetery, about 50 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville 305 Comment
  CHSC2213  Juncus balticus I. Boyd 1949-5-20 Butte Centerville road just beyond Dunford's. 152 Comment
  JEPS114975  Juncus brachyphyllus Lowell Ahart 2008-6-13 14814 Butte Bottom of a small mined wash, about 50 yards west of the cemetery, about 150 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville 324 Comment
  CHSC103697  Juncus bufonius var. bufonius Lowell Ahart 2010-5-14 16665 Butte Along a small drainage, near south park fence, Disc Golf Area, 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. 350 Comment
  CHSC47527  Juncus bufonius var. bufonius Lowell Ahart 1979-5-11 1864 Butte Large wash that runs through the Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  JEPS98295  Juncus bufonius var. bufonius Lowell Ahart 2000-6-27 8511 Butte Big Bald Rock, 3 air mi E of Madrone Lake, 12 air mi NE of Oroville 993 Comment
  RSA715609  Juncus bufonius var. congestus L. Ahart 2005-4-18 11737 Butte 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 southwest of Chico 26 Comment
  UC1609050  Juncus bufonius var. occidentalis Lowell Ahart 1993-8-29 7119 Butte about 6 1/2 mi ne of Stirling City (about 2 1/2 mi ne of Bald Mountain) 1584 Comment
  CDA42856  Juncus capitatus L. Ahart 2012-5-2 17976 Butte On the north side of the paved road, about 100 yards southeast of the entrance to Upper Bidwell Park, about 1/4 mile east of Chico. Comment
  CHSC50696  Juncus diffusissimus Lowell Ahart 1990-5-21 6476 Butte Near the west edge of a small pond, in the borrow 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
  JEPS113870  Juncus diffusissimus Lowell Ahart 2007-7-11 14287 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
  CHSC46623  Juncus dubius Vernon H. Oswald 1989-7-27 3900 Butte Meadow at Butte Creek House, ca. 3.3 mi (air) se of Jonesville. Along the north fork of the creek. 1767 Comment
  HSC100819  Juncus effusus subsp. effusus Lowell Ahart 2011-8-19 17636 Butte ~30 yd. E of Know-northing Creek, N side of Lumpkin Ridge Rd., 1/2 mi. SW of the intersection of Lumpkin Ridge Rd., County Rd. and road to Cascade, 5 (air) mi. NE of Feather Falls. 1225 Comment
  CHSC84202  Juncus effusus subsp. pacificus Lowell Ahart 2003-6-30 10335 Butte In the gutter on the north side of Fields Ridge Road, north of the Ponderosa Reservoir, about 3 miles (air) north of Forbestown. 491 Comment
  JEPS113843  Juncus effusus subsp. pacificus Lowell Ahart 2007-7-11 14288 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
  RSA726659  Juncus effusus subsp. pacificus L. Ahart, L. P. Janeway, Linnea Hanson 2007-7-13 14300 Butte About 30 yards east of a poor dirt road, about 1 1/2 milea (air) northeast of Clipper Mills. 1046 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
  CDA42851  Juncus effusus var. pacificus L. Ahart 2011-8-19 17637 Butte About 30 yards east of Know-nothing Creek, in low area on the north side of Lumpkin Ridge Road, about 1/2 mile southwest of the intersection of Lumpkin Ridge Road, County Road and road to Cascade, about 5 miles (air) northeast of Feather Falls. Comment
  SEINET10938194  Juncus effusus var. pacificus Lowell Ahart 1985-6-30 Ahart 5086 Butte About 2 1/2 miles north-east of Forbestown. Alt. 2850 ft. 868 Comment
  CHSC41305  Juncus ensifolius S. C. Morey 1983-7-22 541 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  RSA325886  Juncus ensifolius L. Ahart, P. Ahart 1983-7-29 4223 Butte Ca. 2 miles S of Milsap Bar, ca. 23 miles NE of Oroville. 750 Comment
  CHSC68908  Juncus howellii Lowell Ahart 1997-7-11 7748 Butte Edges of a small stream from springs, north of the dirt road, southeast of Cold Creek, about 2 miles (air) southwest of Bald Mountain, about 9 miles by road from Stirling City, or about 2 miles (air) northeast of Stirling City. 1219 Comment
  CAS-BOT-BC110148  Juncus leiospermus var. ahartii Lowell Ahart 1980-5-10 2238 Butte Peter Ahart Ranch near Honcut. 50 Comment
  CHSC47562  Juncus leiospermus var. ahartii Lowell Ahart 1978-4-21 1661 Butte On the bottom of vernal pools, Peter Ahart Ranch, about 2 1/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC115400  Juncus leiospermus var. leiospermus Lowell Ahart 2015-3-27 19980 Butte About 3/8 mile northeast of the Coal Canyon Falls, about 1 1/8 miles (air) northwest of the improved parking area, North Table Mountain, about 8 miles north of Oroville. 388 Comment
  CHSC85421  Juncus leiospermus var. leiospermus John Dittes 1992-5-5 476 Butte Sierra Nevada Range Foothills; ca. 2.8 air-miles southeast of Paradise Civic Center, ca. 1.6 air-miles west of West Branch Feather River, ca. 1.1 air-mile northwest of Kunkle Reservoir; slope above (east of) tributary drainage of Dry Creek, southeast of terminus of Libby Road. 451 Comment
  RSA712857  Juncus leiospermus var. leiospermus L. Ahart 2006-5-8 12584 Butte About 3/4 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 397 Comment
  SD241643  Juncus leiospermus var. leiospermus Lowell Ahart 2003-4-15 10095 Butte Northwest of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Vernal pool, about 100 feet west of Hendricks ditch, about 1 3/4 miles northwest of the iron gate and fence. 271 Comment
  CHSC46272  Juncus mexicanus Vernon Oswald 1989-5-1 3756 Butte Butte Sink Wildife Area (w portion of Schohr Ranch), sw corner of the intersection of the main ranch road and Little Dry Creek. 19 Comment
  CHSC94396  Juncus nevadensis Lowell Ahart 2006-8-15 13179 Butte North edge of a wet area west of a large open 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
  UC1564792  Juncus nevadensis V. Oswald and L. Ahart 1989-6-27 3827 Butte ca 3.3 mi (air) se Jonesville (Humbug Rd at Butte Creek House, along Butte Creek); Butte Creek 1767 Comment
  UC1594619  Juncus nevadensis Lowell Ahart 1992-7-26 6859 Butte about 1/4 mi ne of the Carr Mine (about 2 air mi se of Snow Mountain) 1798 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
  CHSC113462  Juncus occidentalis Lowell Ahart 2014-7-7 19594 Butte Depression in a large disturbed area on the south side of Philbook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CHSC28660  Juncus parryi J. D. Jokerst 1979-7-21 301 Butte Summit and sides of Humboldt Peak. 2133 Comment
  CHSC47576  Juncus uncialis Lowell Ahart 1982-5-9 3428 Butte Around the edges of a large vernal pool in one of the farmed fields, Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  UCD142845  Juncus uncialis Lowell Ahart 1974-4-11 363 Butte Peter Ahart Ranch, about 2.25 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC80892  Juncus usitatus Lowell Ahart 2001-7-6 8881 Butte West of a large pond, large 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 Ord Bend, about 12 miles (air) southwest of Chico. 32 Comment
  JEPS113762  Juncus usitatus Lowell Ahart 2007-7-31 14400 B Butte On the south strand of Thermalito Afterbay, about 150 yards north of Highway 162, about 5 1/4 miles west of the intersection of Highway 162 and Highway 70, about 5 3/4 miles (air) west of Oroville 34 Comment
  RSA755034  Juncus usitatus L. Ahart 2009-6-18 15913 Butte 10 yards W of the dredger piles along N Honcut Creek, about 2.5 miles N and 2.75 miles E of Honcut, about 12 miles SE of Oroville. 59 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
  UC1134266  Juniperus californica J. E. Sowder 1933-7-7 109 Butte Camel Mound Chico Quad., Camel Mound 609 Comment
  CAS-BOT-BC236762  Keckiella breviflora Lowell Ahart 1976-6-4 s.n. Butte Peter Ahart Ranch, near North Honcut Creek 45 Comment
  CHSC50686  Keckiella breviflora var. glabrisepala Lowell Ahart 1990-5-21 6477 Butte 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
  POM161683  Kelloggia galioides E. B. Copeland 1929-7-16 s.n. Butte Jonesville. 1550 Comment
  CHSC100500  Kickxia elatine Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15410 Butte On the north side of the gravel road, about 50 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico. 67 Comment
  SEINET13711424  Kickxia elatine Lowell William Ahart, Lowell William Ahart 1999-1 8132 Butte 12 Air Mi SW of Chich, 2 Mi SE Ordbend, Sacramento River Comment
  RSA262526  Koeleria macrantha W. R. Powell 1968-5-16 1505 Butte 1/2 mile NE of Lake Wyandotte. 497 Comment
  CHSC31959  Koeleria phleoides J. D. Jokerst 1979-5-2 1216 Butte Top of North Table Mt., ca. 200 meters S of Cherokee Rd. 396 Comment
  UC204878  Koeleria phleoides A. A. Heller 1914-5-19 11417 Butte Comment
  SEINET10869044  Koeleria phleoides Mary Susan Taylor 1978-5-7 Taylor 1594 Butte In Valley Grassland, on E side of Williams Road, ca. 1/4 mi N of Pentz Road, on Butte College Campus, ca. 15 mi S of Chico. 30 Comment
  UC89375  Kyhosia bolanderi R. M. Austin Jul 1896 412 Butte Colby Comment
  CDA30230  Lactuca saligna L. Ahart 2009-8-3 16254 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. Comment
  CHSC37528  Lactuca saligna M. S. Taylor; L. Ahart 1982-10-11 5151 Butte Graylodge Wildlife Refuge, near check-in station, sw jct of Pennington and Rutherford Rds, ca. 12 mi sw of Gridley. 21 Comment
  CHSC28570  Lactuca serriola M. S. Taylor; J. D. Jokerst 1979-11-11 2280 Butte Edge of ricefield, on w side of Goodspeed Watt Rd, ca. 6 mi s of Chico. 33 Comment
  CAS-BOT-BC340531  Lactuca serriola Lowell Ahart 1982-9-12 3800 Butte On the banks of North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 3 miles east of Honcut 50 Comment
  POM181475  Lactuca serriola H. F. Copeland 1923-1 864 Butte Nelson. Comment
  CHSC36837  Lagophylla glandulosa M. S. Taylor 1982-6-24 4748 Butte E side of Ponderosa Way, 1.6 mi n of Jarbo Gap on Hwy 70. 868 Comment
  CHSC38368  Lagophylla glandulosa Vernon Oswald 1983-7-15 870 Butte Upper Bidwell Park, Chico, 400 ft s of Upper Park Rd. and 1600 ft e of the parking lot at Salmon Hole. 182 Comment
  OBI15967  Lagophylla glandulosa Robert F. Hoover 1965-10-16 9719 Butte Deer Crk rd E of Chico Comment
  UC905683  Lagophylla glandulosa David D. Keck 1930-7-25 974 Butte on Forbestown road 6.5 mi e Oroville; Sierra Nevada 425 Comment
  CAS-BOT-BC341302  Lagophylla glandulosa David D. Keck 1930-7-25 974 Butte 6.5 miles east of Oroville on Forbestown road 425 Comment
  CAS-BOT-BC341317  Lagophylla glandulosa David D. Keck 1933-5-31 2409 Butte Bridge crossing Mud Creek, 2.9 miles west of Richardson Springs Comment
  POM194883  Lagophylla glandulosa H. M. Hall 1914-7-17 9753 Butte Neal Grade, between Chico and Paradise. 213 Comment
  CHSC48174  Lagophylla ramosissima subsp. ramosissima Vernon Oswald 1984-5-21 1191 Butte Humbug Rd. (Centerville Rd.), 4.1 mi s-w of Nimshew Ridge Rd. 396 Comment
  CHSC35667  Lamarckia aurea R. E. Preston 1982-4-22 257 Butte Slope at lakeside; Lake Oroville, ca. 0.9 mi ne of Lime Saddle Powerhouse, ca. 4.5 mi se of Paradise. 280 Comment
  CHSC43853  Lamium amplexicaule L. P. Janeway 1988-2-21 2589 Butte Low in cyn of Little Chico Cr ca 2 mi S of Ten Mile House. 243 Comment
  RSA715477  Lasthenia californica L. Ahart 2005-5-11 11791 Butte 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. 359 Comment
  POM219389  Lasthenia californica H. F. Copeland 1929-4-4 1542 Butte Canyon of Chico Creek. 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
  UC893757  Lasthenia fremontii A. A. Heller 1914-4-3 11260 Butte on the Chico-Oroville road 8 mi from Oroville Comment
  CAS-BOT-BC354119  Lasthenia fremontii A. A. Heller; H. E. Brown 1902-5-2 5441 Butte Near Butte City. Comment
  SEINET10475348  Lasthenia fremontii Mary Susan Taylor 1980-3-28 Taylor 2400 Butte T22N R2E E center sec 31. Vernal pool area in Valley Grassland, just E of Chico, NE corner of jct of Notre Dam Blvd and the Skyway, ca. 1/8 mi E of Hwy 99. 69 Comment
  CHSC46248  Lasthenia glabrata subsp. glabrata Vernon Oswald 1989-4-10 3733 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch), between the ranch road and Little Dry Creek near the s gate on Gridley-Colusa Hwy. 18 Comment
  JEPS96018  Lathyrus angulatus Vernon H. Oswald and Lowell Ahart 1996-5-27 7652 Butte U.S. Fish and Wildlife Service parcel betw Seven Mile Lane and Sacramento River (Sac. R. Nat'l Wildlife Refuge, Llano Seco Unit, between hiking trail and s end of Tract 2...); Sacramento River National Wildlife Refuge, Llano Seco Unit 33 Comment
  SEINET12765126  Lathyrus angulatus Lowell Ahart 2014-5-13 19461 Butte About 150 yards west of the Enterprise Boat Ramp, about 1 miles (air) east of Oroville.; 0 850 Comment
  CHSC93071  Lathyrus brownii L. P. Janeway; B. Castro 1994-4-21 4643 Butte Northern High Sierra Nevada. Western end of Watson Ridge about 2.0 mi east-northeast of Bald Rock Dome. 1079 Comment
  CAS-BOT-BC213346  Lathyrus jepsonii subsp. californicus Mrs. J. H. Morrison 1932-5-1 s.n. Butte Durham Comment
  CAS-BOT-BC213344  Lathyrus jepsonii subsp. californicus Lowell Ahart 1980-6-20 2415 Butte Along the South Fork of Feather River, Sierra Nevada 800 Comment
  SEINET5327269  Lathyrus jepsonii var. californicus R. McKee 1916-5-4 s.n. Butte Adobe Creek, west of Chico Comment
  RSA700396  Lathyrus latifolius H. Gray 2003-6-3 s.n. Butte Millsap Bar Road. Comment
  CHSC860  Lathyrus nevadensis L. Nelson 1935-4-27 Butte Deer Creek Canyon. 914 Comment
  CHSC48507  Lathyrus nevadensis var. nevadensis Vernon Oswald 1985-4-29 1731 Butte Bald Rock Rd. 0.3 mi ne of the trailhead to Big Bald Rock. 975 Comment
  CAS-BOT-BC213286  Lathyrus sulphureus Lowell Ahart 1983-5-28 4025 Butte Along the trail to the over-look at Feather Falls, 3 1/2 miles north of Feather Falls 600 Comment
  CHSC42561  Lathyrus sulphureus Lowell Ahart 1987-5-22 5659 Butte South of the lava cap, about 1/4 mile south of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CHSC96809  Lathyrus sulphureus Lowell Ahart 2007-4-30 13708 Butte On the west side of Jordan Hill Road, about 2 miles northwest of Concow Creek, about 2 miles northwest of Concow Reservoir. 484 Comment
  SEINET956202  Lathyrus sulphureus Carl B. Wolf 1937-1 8730 Butte Northern Sierra nevada. 5 miles below magalia on oroville road. 610 Comment
  CHSC39303  Lathyrus tingitanus Lowell Ahart 1983-6-26 4127 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 instead of Ponderosa Way. 500 Comment
  UCD106543  Lathyrus vestitus var. ochropetalus R. R. Kehlor 1951-4-14 26 Butte 6 1/4 miles east of Oroville on Mt. Ida Road. Comment
  CHSC1033  Lavatera cretica Mrs. Swoape 1963-6-6 Butte Grown in Chico. 57 Comment
  CHSC60655  Layia chrysanthemoides Vernon H. Oswald 1993-4-11 5255 Butte Hwy. 99 between Broyles Rd. and the Tehama County line in the N part of the county. Bordering the highway. 60 Comment
  CHSC8140  Layia fremontii B. Hamilton 1969-4-20 105 Butte Found 1 mile south of Pentz Rd on Highway 99 along roadside. Comment
  CHSC90045  Layia fremontii Rhonda Posey 1991-4-3 7 Butte Meridian Rd., ca. 12.8 mi n of Chico. Ca. 50 yds. N of Renkow Rd. 70 Comment
  POM30571  Layia fremontii C. C. Bruce 1897-05 1845 Butte [Unspecified] Comment
  SBBG17071  Layia fremontii M. Vincent 1961-3-29 Butte Chico Rd, ca. 1 mi E of Chico Comment
  RSA30425  Lepechinia calycina A. A. Heller 1915-5-28 11906 Butte Plentiful near Cohasset. Near the upper limit of the digger pine in the Sierra foothills. Comment
  UCSC010731  Lepechinia calycina Brett Hall, Annee Hall 1991-1 BH 115 .91 Butte Between Chico and Forest Ranch Comment
  CHSC48322  Lepidium didymum Vernon Oswald 1984-5-27 1209 Butte Sacramento River, Bidwell State Park, near the boat ramp. 39 Comment
  NY76545  Lepidium latifolium L. Ahart 1981-9-10 3143 Butte Near entrance to Gray Lodge Waterfowl Management Headquarters, west of Pennington Road, ca 1 mile southwest of Gridley, Valley Grassland 35 Comment
  CHSC3239  Lepidium nitidum Virginia Hagaman 1966-3-12 57 Butte 1/2 mile northeast of Hooker Oak along stream bank, in Lower Bidwell Park, Chico. Comment
  CHSC4120  Lepidium nitidum R. Carter 1966-4-2 324 Butte Found ca. 7 mi. E Oroville at 6120 Woodleaf St. Rt. 300 yds off Feathervale, behind house, in pasture. 243 Comment
  HSC64066  Lepidium nitidum J. P. Smith 1973-3-22 5910 Butte Along Hwy. 149, just N of junction with Hwy. 70 Comment
  JEPS102334  Leptochloa dubia Lowell Ahart 2000-11-4 8714 Butte 1 mi N of West Branch Bridge (Hwy 70) across Lake Oroville (W side of hwy, 1 mi N of bridge, 50 yds. N of Rich Gulch Rd.) 335 Comment
  JEPS98989  Leptochloa dubia Lowell Ahart 2000-11-4 8714 Butte About 100 yards north of Rich Gulch Road, about 1 mile north of the West Branch Bridge across Lake Oroville, about 5 miles (air) SE of Paradise. 335 Comment
  CHSC118871  Leptochloa fascicularis D. G. Kelch 2009-10-8 09 .663 Butte West of Lemoore, east of Lemoore NAS (Navel Air Station). Jackson Avenue, 1 kilometer east of Avenal Cutoff Road, south of Highway 198. Along river channel. 61 Comment
  UC1100304  Leptochloa fascicularis Herbert L. Mason and Verne Grant 1946-8-14 13038 Butte Sacramento Outing Club Butte Sink (canal near big pond) Comment
  CDA32441  Leptochloa fascicularis Margaret Bellue Butte Afton Rd., near Biggs. 0 Comment
  SEINET10934951  Leptochloa fascicularis Lowell Ahart 1991-7-20 Ahart 6666 Butte On the east side of West Butte Road, about 1/2 mile south of North Butte Road. Valley Grassland. T17N R1E SE/S33. 21 Comment
  CHSC34196  Leptochloa fusca subsp. fascicularis J. D. Jokerst; L. Ahart 1981-9-26 1496 Butte Ca 100 m E of Sacramento River at the Bidwell River State Park (Chico Landing) ca 5.0 mi W of Chico. Comment
  CHSC49537  Leptochloa fusca subsp. fascicularis Vernon Oswald 1987-6-5 2957 Butte East side of Sacramento River just n of Golden State Island, (perhaps now technically in Glenn County because of shifting channel). 33 Comment
  CHSC29379  Leptosiphon ciliatus R. A. Schlising; R. Banchero 1980-6-12 3686 Butte 4.6 mi s of Butte/Tehama County line on Hwy 32; roadside. Comment
  CHSC115346  Leptosiphon parviflorus Lowell Ahart 2015-4-13 20041 Butte About 9 1/2 miles (air) north of Oroville. 307 Comment
  CHSC31611  Lessingia nana L. Ahart 1975-7-19 895 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC25345  Lessingia nemaclada M. P. Hayes 1977-8-12 27 Butte At Pulga, Feather River Canyon. 100 m from the intersection of Pulga Road and Highway 70, along Pulga Road. 426 Comment
  RSA754883  Lessingia nemaclada L. Ahart 2009-6-30 15965 Butte About 150 yards N of a small drainage, along the Guardian Rock Trail, about 150 yards SW of Pine Trail, about 1/2 air mile SW of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles NE of Chico. 399 Comment
  CAS-BOT-BC341791  Lessingia nemaclada L. P. Janeway 1993-9-3 4580 Butte Plumas National Forest, Oroville Ranger District. Along dirt road to Bear Ranch Creek falls from Hwy 70; in canyon of North Fork Feather River 487 Comment
  RSA32899  Lessingia nemaclada A. A. Heller 1923-10-21 13832 Butte Paradise Comment
  JEPS104646  Lessingia virgata Lowell Ahart 2003-8-3 10464 Butte On the w side of North Honcut Creek, ca 2 1/2 mi n and 2 1/2 mi e of Honcut, ca 12 mi (air) se of Oroville. 60 Comment
  RSA126788  Lessingia virgata J. E. Sowder 1933-6-15 85 Butte 1 mile west of Tres Vias 46 Comment
  CHSC43879  Leucothoe davisiae L. P. Janeway 1987-6-26 2306 Butte Edge of man-made pond in Camp Cr next to crossing of road, 2.5 mi east of Granite Ridge along the road to Lynch and Logue Mdws. 1365 Comment
  CHSC600  Leucothoe davisiae A. Small 1954-5-30 Butte Rag Dump, near Stirling. 1097 Comment
  CHSC100837  Lewisia nevadensis R. A. Schlising 1980-6-26 3787 Butte 3.2 mi SEof Butte Meadows on Bull Hill Road (='Skyway'); in meadows along Bull Creek. 1511 Comment
  CHSC57133  Lewisia triphylla L. P. Janeway; R. A. Schlising 1988-7-1 2911 Butte On the northeast-facing flank of Snow Mountain and above Summit Lake. 2011 Comment
  SEINET10863158  Lewisia triphylla Mary Susan Taylor 1976-5-3 Taylor 1103 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; granite dome; with Calocedrus decurrens, Pinus ponderosa. 998 Comment
  CHSC6041  Ligustrum vulgare M. MacArthur 1968-6-19 237 Butte Ca. 15 ft. SE of Big Chico Creek and ca. 30 ft. SW PSA bld., bridge, Chico State College. 60 Comment
  SEINET10968804  Lilaea scilloides Mary Susan Taylor 1980-5-31 Taylor 2772 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
  CHSC38881  Lilium humboldtii subsp. humboldtii Vernon Oswald 1983-6-9 659 Butte Upper Bidwell Park, Chico, near Brown's Hole. ... Field redacted by CHSC, contact the data manager for more information 195 Comment
  UC478546  Lilium kelleyanum E. B. Copeland 1930-7-18 614 Butte Jonesville 1550 Comment
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  CAS-BOT-BC133045  Lilium washingtonianum subsp. washingtonianum Albert M. Vollmer; Ira L. Wiggins 1940-7-6 10 Butte About 1/2 mile west of Chaparral 1554 Comment
  UCD116446  Limnanthes R. T. Riding 1968-4-13 24 Butte North Table Mountain. 396 Comment
  CHSC59327  Limnanthes alba subsp. versicolor Darby Kremer 1992-4-18 21 Butte Ponderosa Canyon Rd. 7 km. w of Skyway Hwy. 6 km. n of Magalia. 265 Comment
  HSC23392  Limnanthes douglasii Willis Ball 1970-3-7 85 Butte Growing 1/4 mi. E of Hwy. 99E, beside Skyway to Paradise from Chico. 61 Comment
  SEINET12183046  Limnanthes douglasii Unknown 1978-1 37 Butte ca .25 mi w of Cherokee Road, ca 6.5 mi S of Highway 70, ca 5.5 mi N of Oroville 518 Comment
  CHSC30383  Limnanthes douglasii subsp. nivea J. D. Jokerst 1979-3-20 1147 Butte Around the edges of vernal pools and creeks. Top of North Table Mt., ca .5 mi N of the Jct of Cherokee Rd and the E edge of the Mt. 396 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
  UC971878  Limnanthes floccosa subsp. californica Charles T. Mason Jr. 1949-4-24 1255 Butte 8 mi nw Oroville (along the Oroville-Chico road, near a large asphalt area marked Bombing Range) Comment
  UCD116433  Limnanthes floccosa subsp. floccosa Jeff Dole 1986-4-27 s.n. Butte 1 mile north of Cayton Creek. Comment
  RSA716800  Limnophila L. Ahart 2005-9-13 12368 Butte 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 Road. 29 Comment
  SEINET10496783  Linanthus bakeri Mary Susan Taylor 1984-4-6 Taylor 5411 Butte T22N R4E nw sec 3l. Ca. 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 3 mi S of Paradise. Comment
  CHSC43261  Lindernia dubia var. anagallidea Lowell Ahart 1987-9-4 5878 Butte North Honcut Creek, about 2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 67 Comment
  CHSC76007  Lindernia dubia var. anagallidea Lowell Ahart; Vernon H. Oswald 1999-8-13 8131 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
  CHSC46782  Linum bienne R. A. Schlising; F. J. Fuller 1988-6-17 4540 Butte NE of Oroville, near mouth of Forman Creek on Lake Oroville; in open, heavily disturbed area. Comment
  CHSC55620  Lipocarpha L. P. Janeway 1987-6-5 2142 Butte Border area of small pool, near confluence of Ram Creek and French Creek. 609 Comment
  CHSC61358  Listera convallarioides Lowell Ahart 1993-7-31 7134 Butte Along a small stream that flows into Big Kimshew Creek, on the east side of the dirt road, about 1 1/2 miles south-east of Bald Mountain, north-east of Stirling City. 1493 Comment
  CHSC88996  Lithocarpus densiflorus H. Gray 2003-6-3 Butte Plumas National Forest. Bald Rock trail parking area. 762 Comment
  CAS-BOT-BC36172  Lithocarpus densiflorus var. densiflorus John R. Reeder; Charlotte G. Reeder 1972-6-6 5656 Butte ca. 4 miles N of Forest Ranch 1066 Comment
  SEINET10871262  Lithophragma Mary Susan Taylor 1981-4-28 Taylor 3569 A 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
  CHSC1652  Lithophragma bolanderi D. Stover 1929-4-18 Butte Bidwell Park. 76 Comment
  CAS-BOT-BC432270  Lithophragma campanulatum A. A. Heller 1914-6-22 11955 Butte Little Summit near Butte Meadows 1463 Comment
  CAS-BOT-BC435491  Lithophragma glabrum Lowell Ahart 1988-3-28 5950 Butte About 1/10 mile S of Lumpkin Ridge Road, about 1 1/2 miles E of Camp 18, about 8 miles E of Feather Falls 1280 Comment
  SEINET12216579  Lithophragma heterophyllum S. T. Heaston 1982-1 4 Butte ca 1 mi NE of Chico Golf Course Bridge, along N side of Big Chico Creek 122 Comment
  CHSC96243  Lithophragma parviflorum var. parviflorum R. Fischer 2006-4-21 986 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east -side addition along Hwy. 32. Plants growing on a grassy hillside east of Big Chico Creek at the bottom of 10 Mile House Road, ca. 250 ft. s of gated park property line. 228 Comment
  CHSC39659  Lithospermum californicum Lowell Ahart 1983-6-21 4090 Butte Found along Bloomer Hill Road, about 1 1/4 miles west of the Oroville Quincy Highway, about 15 miles north-east of Oroville. Section 31. 450 Comment
  CHSC29828  Logfia gallica M. S. Taylor; R. S. Schlising, L. Ahart 1980-5-31 2767 Butte W side of Kunkle Reservoir, ca. 100 ft e of Pentz-Magalia Hwy, ca. 3 mi s of Paradise. 441 Comment
  JEPS107767  Logfia gallica Lowell Ahart 2005-5-7 11787 Butte On the east side of North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville 48 Comment
  CHSC2160  Lolium multiflorum H. Silberman; D. Isaac 1949-5-9 Butte West side of football field, CSC campus. 54 Comment
  CHSC4300  Lolium multiflorum V. Hagaman 1966-4-27 Butte Chico State Campus. Comment
  CHSC56829  Lolium multiflorum J. D. Jokerst 1980-4-22 Butte Along Hwy 32, 1.0 mi east of Chico. Comment
  CHSC49698  Lolium perenne Vernon Oswald 1988-5-17 3314 Butte Just w of the dam at Sly Creek Reservoir. Along the edge of the road. 1097 Comment
  CHSC8237  Lolium temulentum D. McClain 1969-5-16 69 Butte 10 yds. s. of Cohasset Rd., 3 mi. e. of Cohasset. 457 Comment
  SEINET10592064  Lolium temulentum A. Arthur Heller 1914-6-2 Heller 11475 Butte Hills 8 miles north of Oroville. Comment
  CHSC116699  Lomatium caruifolium var. denticulatum Lowell Ahart 2016-5-14 20826 Butte About 100 yards north of the waterhole, Peter Ahart Ranch, about 1 3/4 miles north and 2 3/4 miles east of Honcut, about 11 miles (air) southeast of Oroville. 38 Comment
  JEPS25803  Lomatium caruifolium var. denticulatum W. L. Jepson 1934-5-4 16617 Butte 1 1/2 mi. n.e. Cana Comment
  POM78255  Lomatium dasycarpum subsp. tomentosum C. C. Bruce 1897-05 2059 Butte Little Chico Comment
  CHSC107393  Lomatium marginatum Blake McSorley 2010-4-6 Butte Dye Creek Preserve. 135 Comment
  CHSC39664  Lomatium marginatum Lowell Ahart 1983-6-21 4098 Butte Along Bloomer Hill Road, about 3 miles north-west of the Oroville Quincy Highway, about 16 miles north-east of Oroville. Section 30. 700 Comment
  SEINET10454504  Lomatium marginatum Lowell Ahart 1985-5-15 Ahart 4990 Butte East of the dirt road, about 1 1/2 miles north-east of Concow Reservoir. north-east of Oroville. Comment
  UCD150864  Lomatium marginatum var. marginatum W. R. Powell 1968-5-17 1508 Butte Along new Oro-Feather Road, 4 miles north-northwest of Rackerby. 548 Comment
  CHSC13852  Lomatium utriculatum J. A. Guichard 1973-4-4 14 Butte Area above Chico Creek between Salmon Hole and Devils Kitchen. 182 Comment
  CHSC14041  Lomatium utriculatum E. P. Parreno; Z. Parkevich 1967-4-5 Butte 400 yds ne of Chico Municipal Golf Course. Comment
  POM319309  Lonicera Patricia Wilder 1971-6-23 5197 Butte One mile E of Forbestown on Challenge cut-off Road, near junction with Forbestown Road. East of Oroville.; Mt. Range: West slope of the Sierra Nevada; Drainage Area: Feather River. 823 Comment
  CHSC113655  Lonicera hispidula L. P. Janeway 2014-5-29 11276 Butte Northern High Sierra Nevdda. Plumas National Forest; at junction of Roads 18N18 and 19N40 (but 19N40 doesn't exist here anymore). 1.0 air-km north of top of Sunset Hill; upper slopes high above South Fork Feather River arm of Lake Oroville. 774 Comment
  CHSC194  Lonicera hispidula 1932-7-5 Butte Nunnely and Copeland rds. Paradise, canyon side. 548 Comment
  SEINET8056664  Lonicera hispidula M. J. Williams 1984-5-25 84- 34 -1 Butte Feather River Canyon, Hwy 70, 1.5 mile W of Poe Power Dam. 457 Comment
  SEINET10972049  Lonicera hispidula var. vacillans Mary Susan Taylor 1979-10-5 Taylor 2238 Butte T23N R4E sec 18. SE side of Paradise Lake (from picnic area to first creek coming into lake, along road), ca. 0.5 mi N of Coutolenc Rd, ca. 5 mi N of Magalia. 732 Comment
  CAS-BOT-BC240693  Lonicera interrupta Lowell Ahart 1989-5-29 6306 Butte Along Robinson Mill Road, about 1 1/2 miles south of Forbestown Road 670 Comment
  POM46195  Lonicera interrupta Helen M. Edwards 1917-6-6 s.n. Butte De Sabla. Comment
  CHSC58898  Lonicera involucrata var. involucrata Lowell Ahart 1992-7-26 6839 Butte 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
  SEINET10452684  Lotus grandiflorus var. macranthus Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4139 Butte T20N R5E se/ne sec 10. Along edge of East Fork Canyon Creek, near Ponderosa Way (Big Ridge Rd), ca. 14 mi ne of Oroville. Foothill Woodland; 500 m. 500 Comment
  SEINET12161684  Lotus humistratus J. D. Mott 1978-1 7 Butte Cherokee Quadrangle, Upper Miocene Canal 448 Comment
  UC1609418  Lotus incanus Lowell Ahart 1993-6-26 7024 Butte about 1 mi w Lost Creek Reservoir (on w side of the dirt road); Mooreville Ridge 1188 Comment
  JEPS114735  Lotus micranthus Lowell Ahart 2008-5-12 14733 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
  UC1609078  Lotus oblongifolius Lowell Ahart 1993-6-26 7009 Butte about 0.25 mi w Lost Creek Reservoir (on the n side of the dirt road) 1036 Comment
  RSA4646  Lotus oblongifolius var. nevadensis E. B. Copeland 1930-7-11 420 Butte Jonesville. 1500 Comment
  UC128825  Lotus oblongifolius var. oblongifolius Miss Kate Conger 1907-1 Butte Brush Creek Comment
  UC426913  Lotus oblongifolius var. oblongifolius E. B. Copeland 1930-7-11 420 Butte Jonesville 1500 Comment
  SEINET3696861 Image available Lotus purshianus A. A. Heller 1938-7-20 15289 Butte Upper end Snag Lake, 7 miles east of Chaparral 1524 Comment
  SFV1841  Lotus purshianus M. L. Vincent 1960-7-16 104 Butte Sierra Nevada Paradise. Lot south of 5330 Harrison Road. 515 Comment
  UC862220  Lotus purshianus var. purshianus A. A. Heller 1938-7-20 15289 Butte 7 mi e Chaparral (upper end of Snag Lake); Snag Lake 1524 Comment
  SEINET10874146  Lotus strigosus Lowell Ahart 1983-5-28 Ahart 4021 Butte Along trail to Feather Falls, ca. 5 mi n of the town of Feather Falls. Yellow Pine Forest; 600 m. 600 Comment
  UCR247563  Ludwigia decurrens M. Stewart, C. Mutters 2011-9-13 s.n. Butte south-southwest of Richvale 23 Comment
  JEPS121790  Ludwigia decurrens Evan Padgett 2014-9-12 s.n. Butte Butte County, CALIFORNIA. Sacramento Valley. Agricultural fields between Richvale and Highway 162, west of Midway, next to rice fields. Comment
  CHSC28457  Ludwigia peploides R. A. Schlising; R. Banchero 1979-9-23 3491 Butte SW of Chico and E of Ordbend, at W margin of county at Sacramento River and Ord Ferry Road; in slough. Comment
  UC726679  Lupinus A. A. Heller 1942-5-17 16477 Butte Pentz Cherokee Road 2 mi above Pentz; Pentz Cherokee Road Comment
  CAS-BOT-BC198299  Lupinus John Thomas Howell 1976-4-2 51555 Butte About 2 miles southeast of Chico. 60 Comment
  CHSC60980  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. 609 Comment
  CAS-BOT-BC198378  Lupinus albifrons Charles Piper Smith 1949-4-16 49104 Butte Bangor, 2.6 miles east, Yuba-Butte Bridge, Loma Rica Road Comment
  CHSC109065  Lupinus albifrons var. albifrons Lowell Ahart 2012-4-20 17895 Butte On the west side of the South Rim Trail, about 5/8 mile west of Highway 32, about 8 1/2 miles northeast of Chico, south part of Upper Bidwell Park. 254 Comment
  CHSC115358  Lupinus albifrons var. albifrons Lowell Ahart 2015-3-21 19957 Butte Steep east road cut, along Oregon Gulch Road, about one mile south of Oregon city, about 4 1/2 miles north of the intersection of Cherokee Road and Oregon Gulch Road, about 8 miles north of Oroville. 308 Comment
  UC865454  Lupinus arbustus A. A. Heller 1917-7-29 12853 Butte summit above Jonesville; summit above Jonesville 2133 Comment
  CHSC90489  Lupinus bicolor Steve Alvarez 1980-3-24 17 Butte Ca. 4.7 km e of Chico, 2.1 km wsw of Paradise, 0.1 km s of n edge of Coon Ridge, 0.2 km n of Skyway road. 270 Comment
  CHSC90500  Lupinus bicolor E. Ray Latham 1988-3-15 Butte 100 m east of east end of Fremont Street, Chico. Field. 30 Comment
  UCD107232  Lupinus bicolor A. A. Heller 1915-4-20 11857 Butte 7 miles below Cenerville in the Sierra foothills. 76 Comment
  SEINET10838149  Lupinus bicolor subsp. tridentatus Johnson 1978-4-16 Johnson 2 Butte Corolla blue, with purple-spotted white patch on banner. E side of cohasset Rd. At lassen ave., 3 Mi. N of chico, butte co, calif. At edge of moist Pasture in gravelly loam with grass and other annuals of valley grassland. 61 Comment
  CHSC923  Lupinus bicolor var. tridentatus L. Nelson 1935-3-12 Butte Paradise. 548 Comment
  CHSC90294  Lupinus latifolius var. columbianus L. P. Janeway 1994-7-19 4698 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
  CDA13344  Lupinus nanus G. F. Hrusa, T. D. Wilfred 1996-7-9 13192 Butte Sierra Nevada; along Hwy 162. Near entrance to Rogers Cow Camp. Comment
  CHSC90373  Lupinus nanus Paula J. Minton 1980-4-13 1 Butte Butte College, about 11 mi southeast of Chico, 1 mi north of Pentz Road and 1 mi west of Clark Road. 175 Comment
  SD239747  Lupinus nanus George K. Helmkamp, E. A. Helmkamp 2012-4-14 18757 Butte Northwestern Sacramento Valley: Cox Lane, 1.3 miles west of its intersection with La Loma Way, c. 10.3 mi. ENE (82a^z) of Gridley. 91 Comment
  SEINET10452645  Lupinus nanus Heidi H. Schmidt 1993-6-15 Schmidt 865 Butte Plumas National Forest on state road 23N06 1.5 miles N of the junction with highway 70. Mixed hardwood forest. 880 Comment
  UCD108927  Lupinus nanus Rimo Bacigalupi; Robbins, Chisaki 1956-4-19 5609 Butte along rd. to Oroville from Cherokee, at top of descent into North Fork of Feather River Canyon, 3.5 miles n. of Cherokee. 396 Comment
  RSA638251  Lupinus nanus subsp. nanus Michael A. Vincent, Ethan H. Freid, Karl Vincent 1998-4-6 8117 Butte Table Mountain. Comment
  CHSC38508  Lupinus nanus var. latifolius Vernon Oswald 1983-4-18 344 Butte Upper Bidwell Park, Chico, on the north rim ca. 2000 ft w of the powerlines. 195 Comment
  CHSC941  Lupinus nanus var. vallicola 1933-3-5 Butte Bidwell Park. 60 Comment
  JEPS115377  Lupinus pachylobus Lowell Ahart 2009-6-3 15831 Butte Meadow, about 30 yards south of the gate, in the middle of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) wast of Highway 32, about 10 Miles northeast of Chico 209 Comment
  POM193372  Lupinus polyphyllus subsp. superbus E. B. Copeland 1930-7-11 422 Butte Jonesville. 1500 Comment
  CDA34739  Lupinus polyphyllus var. burkei L. Ahart 2010-9-21 17205 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. Comment
  JEPS108777  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
  CHSC36543  Lupinus stiversii L. Ahart 1982-6-4 3547 Butte On a lava cap, 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 1000 Comment
  SEINET10452665  Lupinus stiversii Mary Susan Taylor 1981-5-6 Taylor 3627 A Butte T20N R6E ne sec 33. Forbestown quad. N side of Ponderosa Way, 0.2 mi N of small bridge over Sucker Creek, ca. 3 air mi E of Enterprise Bridge, ca. 4 air mi SW of Feather Falls community. Yellow Pine Forest; 1100 ft. 335 Comment
  SFV11553  Lupinus succulentus M. L. Vincent 1964-4-9 546 Butte Sierra Nevada Humbug Road. 1 mile west of covered bridge. Comment
  SEINET10491011  Lupinus vallicola subsp. vallicola Taylor 1982-5-2 Taylor 4399 Butte Pulga sw quad. Corolla blue. N side of hiway 70, .5 mi w of arch rock tunnel, Ca 25 air mi ne of oroville. In granite gravel; with acer macrophyllum. 472 Comment
  CHSC105670  Luzula cascadensis Lowell Ahart 2010-9-21 17203 Butte About 50 yards east of the poor dirt road, about 100 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
  UC600794  Luzula cascadensis H. F. Copeland 1932-8-12 Butte Meadow by Butte Creek; Jonesville 1500 Comment
  CDA34738  Luzula comosa var. comosa L. Ahart 2010-9-21 17203 Butte About 50 yards east of the poor dirt road, about 100 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. Comment
  JEPS113268  Luzula comosa var. subsessilis Lowell Ahart 2007-4-30 13705 Butte On the west side of Jordan Hill Road, about 1 1/2 miles northwest of Concow Creek, about 1 1/2 miles west of Concow Reservoir 358 Comment
  CHSC101169  Luzula macrantha Lowell Ahart 2009-5-15 15711 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
  UC1609042  Luzula parviflora Lowell Ahart 1993-7-23 7108 Butte about 6 air mi ne of Feather Falls (about 1/8 mi s of campgrounds on the large gravel bar along Fall River); s of Fall River 1036 Comment
  CHSC36096  Lycium barbarum Robert A. Schlising; Coleta Lawler 1981-11-28 4223 Butte Richvale Vernal Pools; 1/4 mi s of jct Hwy 162 to Oroville and Hwy 99, along the latter and across from Thermalito Afterbay; on hilltop at site of old orchard. Comment
  CHSC752  Lycopus americanus V. Holt; M. Underhill 1952-7-9 Butte Dodge Lands. 56 Comment
  CDA18068  Lythrum salicaria B. Villegas 1999-7-1 s.n. Butte W side of Hwy 70 at Oroville. 0 Comment
  CHSC34946  Maclura pomifera R. Schlising 1981-11-28 4221 Butte Richvale Vernal Pools, 1/4 mi S of jct Hwy 162 to Oroville and Hwy 99, along 99 and across from Thermalito Afterbay. Comment
  CHSC31571  Madia elegans subsp. densifolia L. Ahart 1974-8-14 602 Butte Along North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC344323  Madia exigua John Thomas Howell 1967-6-22 42613 Butte Magalia 701 Comment
  JEPS117316  Madia exigua Lowell Ahart 2010-5-7 16620 Butte On the north side of a trail, west of disk golf area, on a ridge about 350 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 353 Comment
  CAS-BOT-BC344310  Madia exigua A. A. Heller 1928-5-27 14561 Butte Along the Neal road, Paradise Comment
  JEPS117380  Madia glomerata Lowell Ahart 2010-9-21 17223 Butte Open area along poor dirt road, about 1 mile (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir 1899 Comment
  CHSC97423  Madia gracilis Robert Fischer 2006-5-29 1016 Butte Chico. Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve off Lookout Trail. 274 Comment
  RSA725051  Madia gracilis subsp. gracilis L. P. Janeway 2007-6-26 9072 Butte Plumas National Forest; about 160 m west of the French Creek Road crossing of French Creek near the mouth of Ram Creek 622 Comment
  UC1442644  Madia subspicata Lowell Ahart 1978-10-29 Butte along the La Porte Rd. 4 mi ne Bangor 350 Comment
  CHSC6612  Magnolia M. MacArthur 1968-6-13 312 Butte SW of bridge b PSA building, along NW side of Big Chico Creek, Chico State College campus. 60 Comment
  SEINET10536496  Mahonia dictyota Lowell Ahart 1983-4-14 Ahart 3935 Butte Ca. 3/4 mi w of Forbestown Reserv., ca. 3.4 mi ne of Forbestown. Yellow Pine Forest; 450 m. 450 Comment
  CHSC28499  Maianthemum racemosum M. S. Taylor; J. Jokerst 1979-7-21 2152 Butte Along trail below Humboldt Peak, on Humboldt Summit. 2154 Comment
  CHSC35981  Malacothrix floccifera M. S. Taylor 1982-6-24 4723 Butte E side of Ponderosa Way (Rim Rd), 1.3 mi n of its jct with Hwy 70 at Jarbo Gap. 853 Comment
  JEPS124029  Malacothrix floccifera Lowell Ahart 2015-6-16 20241 Butte About 3 1/2 miles (by road) northwest of Fall River Bridge, about 5 miles (air) northwest of Camp 18, about 8 1/2 miles (air) northeast of Feather Falls. Comment
  CAS-BOT-BC347375  Malacothrix floccifera L. P. Janeway; Perrie Cobb; Linnea Hanson 1993-7-1 4411 Butte Plumas National Forest, Oroville Ranger District. Along French Creek Road 2.6 mi northeast of Stanwood Saddle and Oroville-Quincy Hwy. 902 Comment
  CHSC107242  Malva nicaeensis Lowell Ahart 2011-6-3 17363 Butte Wood chipped planter area between Bidwell Mansion parking area and Gateway Science Museum, Chico. 60 Comment
  CHSC38554  Malva nicaeensis Vernon Oswald 1983-4-25 366 Butte Upper Bidwell Park, Chico, at the edge of Parking Area C at the w end of Horseshoe Lake. 100 Comment
  CHSC63257  Malva parviflora L. Ahart 1994-3-30 7277 Butte Garden area at the north-east corner of Oregon City School House, Oregon City, about 7 miles north of Oroville. 365 Comment
  JEPS118074  Malva parviflora Lowell Ahart 2011-5-9 17352 Butte South side of Palm Avenue, about 2 miles (air) southeast of East Biggs 29 Comment
  CHSC46800  Malvella leprosa R. A. Schlising 1986-9-14 4503 Butte NW of Chico, ca 1.5 mi S of Nord, along Bell Road. Comment
  CHSC101673  Marah watsonii Lowell Ahart 2009-4-26 15648 Butte On the east side of Guardians Trail, about 100 yards north 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
  CHSC26877  Marah watsonii Robert A. Schlising 1963-5-4 2557 Butte 0.7 miles southwest of junction with Skyway Road, along Honeyrun Road (in city of Paradise). Comment
  CHSC43049  Marsilea vestita L. P. Janeway 1987-5-7 2018 Butte Dead Horse Slough. Just west of California Ave and ca 300 ft north of hwy 32. 74 Comment
  CHSC8735  Marsilea vestita S. Chulasmai 1966-5-20 42 Butte Horseshoe (Mud) Lake. Comment
  SEINET10834130  Marsilea vestita Mary Susan Taylor 1980-8-15 Taylor 3253 Butte T21N R2E nw sec 36, Hamlin Canyon quad. Pentz vernal pool, 0.4 mi SE of jct of Pentz (Benum) Rd, and Hwy 99, ca. 10 mi S of Chico; Valley Grassland. With E. Pierce. 55 Comment
  CHSC97255  Marsilea vestita subsp. vestita Lowell Ahart 2007-8-19 14483 Butte About 2 1/4 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville. 49 Comment
  JEPS113778  Marsilea vestita subsp. vestita Lowell Ahart 2007-8-19 14483 Butte About 2 1/4 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville 49 Comment
  CHSC389  Matricaria discoidea B. Richardson 1929-4-16 Butte CSC Campus. 54 Comment
  CAS-BOT-BC348088  Matricaria discoidea Lowell Ahart 1987-5-6 5504 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC23465  Meconella californica J. R. Lee 1972-4-20 2 Butte Found on hill 600 yds sw of Covered Bridge, 7.2 mi from the Chico city limits. 182 Comment
  CHSC4621  Meconella californica R. Carter 1966-3-13 296 Butte Found ca. 6 mi. E of Chico at intersection of Honey- Run Rd. and Humbug Rd. in Butte Cr. Canyon. Growing at margin of open area 50 yds. up slope on S side of canyon. Comment
  CHSC4668  Meconella californica R. Carter 1966-4-11 341 Butte Found ca. 1/2 mi. E of Bidwell Bar along old R. R. tracks; growing in sandy soil in middle of tracks. 152 Comment
  SEINET8721630 Image available Medicago ciliaris Roland McKee 1908-1 7742 Butte Chico Comment
  CHSC40916  Medicago praecox Lowell Ahart; John Thomas Howell 1976-4-1 1030 Butte Along Cherokee Road, about 1/4 mile north of the large parking area, Table Mountain, north of Oroville. 365 Comment
  CHSC45288  Medicago praecox Vernon Oswald 1987-4-8 2314 Butte Butte Creek Reserve on the s side of Butte Creek n of the Skyway, ca. 0.1 mi w of the double set of transmission lines. 85 Comment
  RSA715569  Medicago praecox L. Ahart 2005-5-2 11779 -A 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 Ord bend, about 12 miles (air) southwest of Chico. 26 Comment
  CHSC113424  Melica aristata Lowell Ahart 2014-7-7 19559 Butte About 20 yards east of the Skyway, about one-mile north of Stirling City. 1142 Comment
  CAS-BOT-BC269379  Melica californica A. A. Heller 1918-5-5 13012 Butte Near Magalia Comment
  CAS-BOT-BC269389  Melica californica John Thomas Howell 1962-6-16 37540 Butte Magalia 731 Comment
  CHSC100993  Melica californica var. nevadensis L. P. Janeway 2008-4-2 9250 Butte Cascade Range Foothills. East edge of City of Chico; slope on north side of Humboldt Road 2.9 km northeast of Bruce Road. 167 Comment
  UC600751  Melica fugax H. F. Copeland 1932-6-29 Butte between Jones Creek and Willow Creek; Jonesville Comment
  CHSC41166  Melica harfordii L. P. Janeway; Gary Benson 1985-7-1 Butte Plumas N.F. ECOS plot 11-123. Slope on west side of Middle Fork Feather River near Milsap Bar. 633 Comment
  JEPS121983  Melica harfordii Lowell Ahart 2014-7-7 19560 Butte About 20 yards east of the Skyway, about one-mile north of Stirling City. Comment
  SD122518  Melica harfordii Lowell Ahart, Peter Ahart 1984-6-10 4713 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown 700 Comment
  CDA13293  Melica subulata G. F. Hrusa, T. D. Wilfred 1996-7-9 13141 Butte Plumas National Forest; Occasional individuals on dry, shaded slopes in coniferous understory above Jordan Creek S of Hwy 162 near Roger's Cow Camp. Perennial. Comment
  UCD88614  Melica subulata August L. Hormay 1929-7-7 s.n. Butte Butte Creek, 4 miles below Butte Mtn. Ranger Station. Comment
  CAS-BOT-BC262503  Melica torreyana A. A. Heller 1915-4-20 11859 Butte 7 miles below Centerville in the Sierra foothills 76 Comment
  CHSC102852  Melica torreyana Lowell Ahart 2009-5-30 15803 Butte On the northeast 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
  CHSC94052  Melica torreyana R. D. Fischer 2005-4-30 726 Butte Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve on Lookout Trail. Grass growing on steep, north facing wooded slope. 518 Comment
  JEPS120130  Melica torreyana Lowell Ahart 2012-5-14 18053 Butte On the raw bank of Big Chico Creek, at Table 11, north of the paved road, Lower Bidwell Park, Chico. Comment
  CHSC38519  Melilotus albus Vernon Oswald 1983-6-18 711 Butte Upper Bidwell Park, Chico, in Lindo Channel at the diversion weir. 79 Comment
  CHSC94575  Melilotus albus Lowell Ahart 2006-9-13 13336 Butte South edge of the North Fork of the Feather River, about 100 yards west of Mill Creek, 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
  UCD107993  Melilotus albus L. Ahart 1982-7-10 3670 Butte 1/4 mi se of HQ, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. Comment
  CHSC83001  Melissa officinalis Lowell Ahart 2002-9-8 9931 Butte On the south side of the paved road, just south of the first parking spaces at the Feather Falls Trailhead, in Bryant Ravine, about 2 miles north by road from the town of Feather Falls. 741 Comment
  SEINET10498889  Mentha arvensis var. villosa Mary Susan Taylor 1977-11-12 Taylor 1530 Butte Devil's Kitchen area, on S side of Upper Bidwell Park Road, Upper Bidwell Park, Chico. Foothill Woodland. Comment
  CDA40724  Mentha canadensis T. C. Fuller 1962-7-12 9176 Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 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
  CHSC30377  Micranthes californica J. D. Jokerst 1979-3-20 1154 Butte Top of North Table Mt., W edge at the water fall of the S branch of Coal Cr. 365 Comment
  CHSC34447  Micranthes californica R. E. Preston 1982-2-4 161 Butte Top of cliffs, s rim of Butte Creek Canyon above Honeyrun Covered Bridge, ca. 7.5 mi e of Chico. 289 Comment
  CHSC82595  Micranthes californica Samantha Mackey Hillaire 2002-3-18 307 Butte Table Mountain, on a cliff overlooking Beatson Hollow next to a waterfall. On the south side of a stream channel. 365 Comment
  CHSC38679  Micranthes fallax Vernon Oswald 1983-3-7 130 Butte Upper Bidwell Park, Chico, along the dirt road leading to the Police Pistol Range. 91 Comment
  CHSC34531  Micranthes integrifolia R. E. Preston 1982-2-18 168 Butte Bank on s side of Anderson Fork of Rock Creek. Ca. 7.5 mi nne of downtown Chico. 182 Comment
  LA209006  Micranthes integrifolia E. B. Copeland; 1929-7-20 369 Butte Jonesville 1550.0 Comment
  CHSC42857  Micranthes nidifica Lowell Ahart 1987-5-22 5664 Butte In a small wash, about 1/4 mile southeast of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles northeast of Feather Falls. 1280 Comment
  CHSC44236  Micranthes odontoloma V. Oswald; L. Ahart 1988-7-13 3588 Butte Road to High Lakes e of Philbrook Reservoir. Along the n edge of Philbrook Creek s of the road. 1828 Comment
  CAS-BOT-BC429199  Micranthes oregana E. B. Copeland 1929-7-20 369 Butte Jonesville 1550 Comment
  SD116539  Microcala quadrangularis Barbara Ertter, Jeff Strachan and Lowell Ahart 1980-5-7 3294 Butte Peter Ahart Ranch; ca., 2.5 miles northnortheast of Honcut between Oroville and Marysville. 29 Comment
  CHSC101970  Micropus californicus J. Boze 1982-5-8 438 Butte Along edge of Horseshoe Lake in Upper Bidwell Park. Comment
  CHSC116965  Micropus californicus Matthew Forster 2013-5-14 Butte Oroville Spillway, off Oro Powerhouse Rd., adjacent to Oroville Spillway. 118 Comment
  CHSC33909  Micropus californicus var. californicus M. S. Taylor 1981-5-21 3775 Butte S side of Concow Rd, ca. 0.5 mi s of its jct with Ponderosa Way, ca. 20 air mi n of Oroville. 853 Comment
  CHSC40484  Micropus californicus var. californicus Lowell Ahart 1985-5-15 4994 Butte West of a small stream, 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow Res. 731 Comment
  CHSC29734  Microseris acuminata J. D. Jokerst 1980-4-17 597 Butte Top of North Table Mt, around the edges of vernal pools. 441 Comment
  UC831277  Microseris acuminata A. A. Heller 1914-4-14 11291 Butte grain field 8 mi n Oroville Comment
  CHSC40299  Microseris douglasii subsp. tenella Lowell Ahart 1985-4-29 4888 Butte Peter Ahart Ranch, about 2 miles north and 2 miles east of Honcut, about 12 miles south of Oroville. 50 Comment
  CHSC31661  Microseris elegans L. Ahart 1978-4-27 1674 Butte Peter Ahart Ranch, Honcut. Fields. 50 Comment
  POM196544  Microsteris gracilis subsp. gracilis H. F. Copeland 1929-6-12 1202 Butte Jonesville. 1524 Comment
  SEINET10830535  Mimulus Mary Susan Taylor, K. Tharp 1983-3-12 Taylor 5242 Butte T22N R2E nw sec 27. Chico quad. Along small rd off Stillson Canyon Rd (leading to Mannion property), ca. 3 mi sse of Chico. Elevation ca. 500 ft. 152 Comment
  RSA149055  Mimulus aurantiacus var. grandiflorus Dorothy Wiggins 1961-6-10 16312 Butte 0.2 mile E of Cresta Dan Power Station n Feather river, along U.S. Hwy Alternate 40 Comment
  JEPS10563  Mimulus congdonii R. F. Hoover 1938-4-24 3240 Butte 3 mi n Chico Comment
  SBBG40472  Mimulus douglasii J. Ingram, A. Ingram 1960-4-5 288 Butte Neal Rd, ca. 2 mi S of Paradise Comment
  SEINET10929282  Mimulus floribundus Mary Susan Taylor 1980-10-6 Taylor 3361 Butte T23N R5E se sec 15, Pulga quad. S side of Hwy 70, ca. 0.4 mi W of Bear Creek jct with N Fork Feather River, ca. 0.5 mi W of Arch Rock Tunnel Rest Stop, near Butte-Plumas county line; granitic soils. 488 Comment
  JEPS108837  Mimulus geniculatus Lowell Ahart 2006-5-3 12563 Butte Face of basalt cliffs on the south side of the stream, about 100 yards south of the fence, about 1 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 378 Comment
  JEPS4702  Mimulus glaucescens A. A. Heller 1914-4-29 11340 Butte 8 mi s Vina; Pine Creek 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
  UCD96009  Mimulus microphyllus Dena Grossenbacher; Brian Green 2008-4-8 759 Butte About 0.5 miles west of main parking area at North Table Mountain Ecological Reserve located on Cherokee Road just south of junction with Derrick Road. 373 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
  RSA717286  Mimulus tricolor L. Ahart 2005-5-28 11825 Butte On the north side of Falager Ct., south of the Durham Pentz Road, east of Highway 99 East, about 4 miles east of Durham. 67 Comment
  CAS-BOT-BC174592  Minuartia californica John Thomas Howell; Gordon H. True 1967-5-7 42180 Butte Northwest outskirts of Oroville north of the Feather River Comment
  CHSC20118  Minuartia californica M. S. Taylor 1975-4-26 522 Butte In vernal pool, on e side of Kunkle Reservoir, ca. 1/4 mi e of Pentz-Magalia Hwy, ca. 1 mi s of Paradise. 609 Comment
  CAS-BOT-BC388609  Minuartia douglasii John Thomas Howell 1962-6-16 37556 Butte Magalia 731 Comment
  HSC32608  Minuartia douglasii R. A. Vanbianchi 1974-4-20 234 Butte Table Mtn. 305 Comment
  CAS-BOT-BC433047  Mitella pentandra Vernon Oswald; Lowell Ahart 1987-7-1 3087 Butte Ca. 3 mi (air) s of Humbug Summit, 0.5 mi w of the Butte-Plumas county line, ca. 5.5 mi (air) se of Jonesville. 1935 Comment
  CHSC77986  Moehringia macrophylla Lowell Ahart 2000-5-10 8336 Butte On the south side of the old or west trail, Feather Falls Trail, about 1 mile north of the trailhead, about 2 miles (air) north of Feather Falls. 579 Comment
  CDA3416  Moenchia erecta L. Ahart 1980-5-4 2192 Butte ca. 3/4 mile southeast of Hurlton. Comment
  CAS-BOT-BC435066  Mollugo verticillata John Thomas Howell 1959-9-20 34635 Butte Eastern outskirts of Oroville 60 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
  SEINET13948647 Image available Monardella odoratissima Lewis S. Rose 1955-1 55105 Butte 6 mi SE of Paradise on Pentz Road; 1400 ft alt. 427 Comment
  CAS-BOT-BC215537  Monardella odoratissima subsp. pallida A. A. Heller 1917-7-29 12860 Butte Summit above Jonesville 2133 Comment
  CHSC52213  Monardella sheltonii L. P. Janeway 1988-6-25 2888 Butte Near Paradise; Wayland Rd (Foster Rd) 1.1 mi E of Neal Rd. 381 Comment
  CHSC76342  Monardella sheltonii L. P. Janeway 1999-7-17 6504 Butte Steep northwest-facing slope on northwest side of Humboldt Road 2.1 mi northeast of Hwy 32; northwest edge of Carpenter Ridge. 1365 Comment
  JEPS115380  Monardella sheltonii Lowell Ahart 2009-6-3 15822 Butte On the west side of Ten Mile House Road, about 200 yards northwest of the table at the old homestead, 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 232 Comment
  CDA40785  Monardella sheltonii T. C. Fuller 1958-7-7 1910 Butte 0.1 mile north of Feather River Bridge, Highway 40 Alt., 1 mile north of Pulga. 0 Comment
  CDA40936  Monardella venosa James D. Jokerst & Barbara Castro 1992-5-19 3355 Butte Unnamed canyon north of Nugen Canyon on the south side of Neal Rd. near the Butte County Sanitary Landfill. Comment
  CHSC101766  Montia parvifolia Lowell Ahart 2009-5-15 15718 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
  SEINET10929036  Montia perfoliata Mary Susan Taylor 1975-3-10 Taylor 380 Butte Honey Run Covered Bridge, along Butte Creek, from bridge, on bluffs (S side) down to creek and along creek, returning to bridge; ca. 8 mi E of Chico. Riparian Woodland and Foothill Woodland. 152 Comment
  JEPS119751  Morus alba Lowell Ahart 2012-5-17 18088 Butte On the south edge of Big Chico Creek, east of the Deer Pen, between Table 12 & 13, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC260538  Muhlenbergia filiformis A. A. Heller 1917-7-28 12833 Butte Butte Meadows 1280 Comment
  CHSC78361  Muhlenbergia filiformis Lowell Ahart 2000-6-27 8520 Butte Big Bald Rock, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 993 Comment
  CAS-BOT-BC275345  Muhlenbergia mexicana J. W. Stacey 1933-9-29 s.n. Butte Chico 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
  CHSC38835  Muhlenbergia rigens Vernon Oswald 1982-10-22 2 Butte Bidwell Park, Chico. Seep near Diversion Dam ca. 50 ft s of Upper Park Rd ca. 3.1 mi east of its junction with Wildwood Ave. 121 Comment
  JEPS113276  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
  CHSC14004  Myosurus minimus T. Manolis 1974-4-23 20 Butte In bed of vernal pool at edge of Hwy 99 at junction of Broyles Rd, ca. 9 mi n of Chico. 60 Comment
  SEINET12093734  Myosurus minimus Unknown 1985-1 4880 Butte S of Central House Rd., NW of Honcut, about 12 mi S of Oroville, along sides of Wyandotte Creek 35 Comment
  CHSC45962  Myosurus minimus subsp. minimus Lowell Ahart 1974-3-18 324 Butte On the bottom of a vernal pool, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC43681  Myriophyllum aquaticum Vernon Oswald 1984-3-14 1094 Butte Oroville Wildlife Area, near the w drive ca. 2 mi s of the 10th Street entrance off of Calif. Hwy 162. Comment
  SEINET10501563  Najas guadalupensis Mary Susan Taylor 1978-7-22 Taylor 1846 Butte Ca. 20 ft E of the Midway, ca. 7 mi S of Durham, S of Chico, in rice field. 30 Comment
  CHSC27863  Nassella cernua A. K. Bos 1978-4-24 20 Butte Ca. 10 ft s of Rd, 2.6 mi e on Humbug Rd, 6.6 mi se from Chico. Comment
  UCD87723  Nassella cernua P. B. Kennedy 1914-5-1 4754 Butte Buttte County: Comment
  CHSC39504  Nassella pulchra Lowell Ahart 1983-6-15 4055 Butte Along the edges of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut. 50 Comment
  CAS-BOT-BC60373  Nasturtium officinale Lowell Ahart 1977-5-8 s.n. Butte Peter Ahart Ranch, Honcut. 50 Comment
  JEPS121907  Navarretia capillaris Lowell Ahart 2014-7-16 19681 Butte About 60 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CHSC45426  Navarretia divaricata subsp. vividior Lowell Ahart 1984-7-19 4729 Butte Along the edge of the dirt road where there is a seep, about 1 1/2 miles south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 air miles north-east of Stirling City. 1371 Comment
  RSA107397  Navarretia filicaulis L. S. Rose 1955-6-15 55101 Butte 6 miles SE of Paradise on Pentz Road 427 Comment
  CHSC44416  Navarretia intertexta Lowell Ahart 1988-6-23 6078 Butte In the meadow, south of the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road. 670 Comment
  CHSC63650  Navarretia leptalea B. Castro; R. Zebell 1989-7-20 323 Butte S end of Walker Plains, on W side of the Oro-Quincy Hwy. 1539 Comment
  CHSC75392  Navarretia leucocephala subsp. leucocephala Jennifer Slater 1997-4-20 24 Butte Upland area at the Wurlitzer addition of the Vina Plains Preserve, west of Highway 99, approx. 10 miles north of Chico. 67 Comment
  POM74522  Navarretia leucocephala subsp. leucocephala Edward Palmer 1892-6-7 2081 Butte Near Chico. Comment
  UC1228175  Navarretia nigelliformis Beecher Crampton 1960-6-15 5622 Butte 10 mi se Chico Comment
  SEINET10496832  Navarretia propinqua Mary Susan Taylor 1978-9-9 Taylor 1917 Butte Along Bull Run Road, ca. 10-11 mi S of Butte Meadows in northern portion of the county; Yellow Pine Forest. 1463 Comment
  CHSC1297  Navarretia pubescens V. Holt 1942-5-23 Butte Salmon Hole, Chico Creek. 152 Comment
  CHSC26826  Navarretia pubescens M. S. Taylor 1978-5-7 1593 Butte In vernal pools on e side of Williams Rd, on Butte College campus, ca. 1/2 mi n of Pentz Rd, ca. 15 mi s of Chico. 30 Comment
  CHSC52110  Navarretia pubescens D. H. Ikeda 1980-5-26 388 Butte 1.4 mi from junction of Lunt Rd. and Nelson-Bar Rd. Comment
  JEPS107894  Navarretia pubescens Lowell Ahart 2005-5-28 11822 Butte Pasture, on the north side of Falager Ct., south of the Durham Pentz Road, east of Highway 99 East, about 4 miles east of Durham 70 Comment
  CAS-BOT-BC232627  Navarretia pubescens Lewis S. Rose 1963-6-5 6314 Butte 3 miles W of Palermo 45 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
  SEINET10496837  Navarretia tagetina Mary Susan Taylor 1974-5-7 Taylor 230 Butte In patches on N side of Pentz Road, ca. 3 mi E of Hwy 99. Valley Grassland, with Brodiaea sp., Calochortus luteus. Comment
  CHSC101268  Nemophila heterophylla Lowell Ahart 2009-4-3 15531 Butte Along the north margin of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico. 67 Comment
  CHSC101664  Nemophila heterophylla Lowell Ahart 2009-4-26 15641 Butte On the south of Guardians Trail, about 30 yards southwest 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
  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
  UCD120060  Nemophila heterophylla M. Vincent 1964-4-8 504 Butte Hwy. 40. 1 mile northeast of new bridge. Comment
  CHSC88986  Nemophila menziesii Christine Hantelman 2000-2-18 6 Butte 1.5 mi east on Wookey Road. 112 Comment
  CHSC114960  Nemophila pedunculata Lowell Ahart 2015-3-14 19949 Butte On the south side of Beatson Hollow, south of where the small stream flows into the stream on the bottom of Beatson Hollow, about 1-1/4 miles (air) northwest of Cherokee Road, about 7miles (air) north of Oroville. 302 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
  CHSC40779  Nemophila pedunculata Lowell Ahart 1985-5-1 4889 Butte About 2 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 35 Comment
  SEINET10497057  Nemophila pedunculata Mary Susan Taylor 1982-5-21 Taylor 4488 Butte T23N R5E ne/ne sec 6. Pulga Sw quad. On n side of Hwy 70 along Pulga Rd, near Pulga bridge over Feather River, ne of Oroville. On serpentine; 1600 ft. 488 Comment
  CHSC61338  Nicotiana acuminata var. multiflora Lowell Ahart 1993-7-22 7069 Butte At Camp 18, about 5 (air) miles north-east of Feather Falls. 1219 Comment
  UCD137747  Nymphaea odorata G. Douglas Barbe 1975-6-4 2030 Butte between Nelson West Road and Pacific Gas and Electric reservoir, 1/4 mile east of Chico/Butte City Highway. Comment
  SEINET3887706  Odontostomum hartwegii Barbara Ertter, Lowell Ahart; Jeff Strachan 1980-5-6 3283 Butte Peter Ahart Ranch about 2 1/2 mi NNE of Honcut between Oroville & Marysville.; 0 30 Comment
  SEINET8501843  Odontostomum hartwegii C. Witham, J. Buck 2001-5-3 182 Butte Book Family Farm, off of Hwy 99, 2 miles N of its intersection with Hwy 149, Book Ranch Site, pool # BOO072. Comment
  CDA34717  Olea europaea L. Ahart 2010-6-1 16750 Butte North 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
  UC1467991  Ophioglossum californicum Lowell Ahart 1984-2-18 4496 Butte ca. 4 mi NE of Honcut ( Joie Osgood Ranch) Comment
  UC601005  Orobanche californica subsp. grayana E. B. Copeland 1938-9-13 Butte Jonesville. Comment
  SEINET12326963  Orthocarpus attenuatus R. E. Preston 1979-1 18 Butte N of Cherokee Rd, 5 mi N of Oroville 366 Comment
  POM173667  Orthocarpus erianthus H. F. Copeland 1928-4-3 996 Butte Foothills. Comment
  RSA178617  Orthocarpus lacerus A. A. Heller 1927-5-7 14365 Butte Along the Paradise grade above Clear Creek. Comment
  POM197062  Orthocarpus purpurascens H. F. Copeland 1929-5-4 20 Butte Near Chico. 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
  CHSC42640  Osmorhiza occidentalis Vernon Oswald 1985-7-21 1908 Butte Jones Meadow Rd. ca. 0.1 mi s of its jct. with the dirt road coming in from Inskeep, ca. 0.7 air mi wnw of Jones Meadow Lake. 1737 Comment
  JEPS114193  Oxalis bowiei L. P. Janeway 2007-12-11 9224 Butte Northern Sierra Nevada Foothills. Southeast side Feather River, west side Table Mountain Blvd bridge. Comment
  CHSC49843  Oxalis corniculata Vernon Oswald 1990-4-11 4162 Butte Upper Miocene Canal between Kunkle Reservoir and the jeep trail cutting down the slope above the West Branch of Lake Oroville. On the downhill side of the canal. 426 Comment
  JEPS95963  Oxalis corniculata Vernon H. Oswald 1999-5-6 9724 Butte Bidwell Sacramento River State Park; Sacramento River; Big Chico Creek; Chico 36 Comment
  CHSC84127  Oxalis laxa Lowell Ahart 2003-4-30 10119 Butte Between dredge tailings, where there is a brake in the levee, about 100 yards south of the Feather River, on the west side of the dirt road in the Oroville Wildlife Area, about 3/5 of a mile west of Pacific Heights Road, about 5 1/2 miles (air) southwest of Oroville. 39 Comment
  CHSC25438  Oxypolis occidentalis Marc Hayes; Warner 1977-9-11 74 Butte Ca. 10 m n of Humboldt Rd., exactly 6.9 mi from the junction of Humboldlt Rd. and Hwy 32 (towards Butte Meadows). 1219 Comment
  UCD150723  Packera eurycephala Collector Unknown 1977-5-21 s.n. Butte California, Butte County. Near Pulga Canyon. Slopes of the Feather River. Elevation estimated by label-maker. 457 Comment
  CHSC101489  Packera eurycephala var. lewisrosei Samantha Mackey Hillaire 2008-6-12 1254 Butte Lassen National Forest, administered by Plumas National Forest. Powerline survey, on Rocky Ridge. East of intersection of Rim Road (23N06) and 23N06C. Approx. 1 airmile SSW of Pulga. Also T22N, R04E, S01. Area centered on roughly 631167.524638359, 4406717.59894074. 975 Comment
  CHSC11831  Packera subnuda var. subnuda E. B. Copeland 1930-6-27 497 Butte Jonesville. 1550 Comment
  LA203913  Packera subnuda var. subnuda E. B. Copeland; 1930-6-27 sn Butte Jonesville 1550.0 Comment
  CHSC61374  Panicum acuminatum var. acuminatum Lowell Ahart 1993-7-29 7122 Butte About 2 1/2 miles north-east of Bald Mountain, about 6 1/2 miles north-east of Stirling City. 1584 Comment
  CAS-BOT-BC253703  Panicum capillare Lowell Ahart 1981-8-15 3042 Butte Snag Lake, about 3 miles S of Jonesville 1524 Comment
  JEPS115064  Panicum capillare Lowell Ahart 2007-10-31 14513 Butte West of the official parking area, strand of Lake Oroville, Foreman Creek Area, about 1 mile south of Highway 162 (Oroville Quincy Road), about 7 miles (air) northeast of Oroville 224 Comment
  CAS-BOT-BC253852  Panicum miliaceum Lowell Ahart 1988-8-10 6168 Butte On the S edge of Pentz Road, about 1 mile E of Highway 99 60 Comment
  CHSC44431  Parentucellia viscosa Lowell Ahart 1988-5-29 6008 Butte Near a small wash, about 1/10 mile north-east of the old barn, about 1/2 mile north-east of the Honcut Cemetary, Joie Osgood Ranch, about 3 1/2 miles east and 1 1/2 miles north of Honcut. 60 Comment
  UCD77900  Parentucellia viscosa Robert E. Preston 2003-5-11 2131 Butte ca. 2.25 mi W of Pentz, along Pentz Rd, ca. 0.5 mi E of Clark Rd. 97 Comment
  JEPS105999  Paronychia ahartii Lowell Ahart 2004-4-4 10709 Butte About 20 yards north of the faint old fence ridge, about 175 yards east of Wilber Road, east-northeast of the high hill crossed by Wilber Road, cattle pasture, about 3 miles (air) west of Thermalito. Comment
  JEPS43469  Parvisedum pumilum Joan O. Danielson 1966-4-6 30 Butte Table Mountain 609 Comment
  SEINET12216577  Parvisedum pumilum A. R. Shepard 1981-1 12 Butte T23N, R1W, Sec. 4 NE quarter, ca 15 mi N of Chico and 900 ft W of Singer Creek; 58 Comment
  CHSC32615  Paspalum dilatatum J. D. Jokerst 1979-6-13 1230 Butte Top of North Table Mt., ca 100 m N of Cherokee Rd where it intersects the E edge of the mountain. 396 Comment
  JEPS116029  Paspalum dilatatum Lowell Ahart 2009-6-30 15969 Butte On dry soil, on the east side of Ten Mile House Road, about 30 miles east of Big Chico Creek, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 234 Comment
  RSA754385  Paspalum dilatatum L. Ahart 2009-7-3 15993 Butte E side of the road, 30 yards SE of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 100 yards E of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  UC1037265  Paspalum distichum E. Wilson 1934-9-3 70 Butte Biggs Rice Station Comment
  CDA33282  Pedicularis attollens T. C. Fuller 1962-7-12 8199 Butte 2 miles east of Butte Meadows, road to Jonesville, bottomland of Butte Creek 0 Comment
  CHSC1839  Pedicularis densiflora W. Reed 1947-3-9 Butte Along roadside. 396 Comment
  CHSC45734  Pedicularis densiflora J. Marr 1988-3-31 17 Butte 1 mi n of Concow Rd, 6 mi w of Hwy 70, 18 mi n of Oroville. 609 Comment
  CDA41862  Pedicularis racemosa L. Ahart 2003-8-26 10543 Butte On the west side of the dirt road, west of where Pinkard Creek flows into the Lost Creek Reservoir, about 3/8 mile north of the Lost Creek Reservoir Dam, 1 1/8 (air) southwest of the Sly Creek Reservoir Dam. Comment
  CAS-BOT-BC69335  Pellaea brachyptera E. B. Copeland 1930-7-7 401 Butte Jonesville 1700 Comment
  SEINET10529803  Pellaea mucronata Mary Susan Taylor, K. Tharp 1983-3-11 Taylor 5230 Butte T20N R5E sw/se sec 29. Along abandoned part of Hwy 62 which leads into water at n end of Bidwell Bar Bridge, ca. 6 air mi nne of Oroville. Comment
  UCD80691  Pellaea mucronata subsp. mucronata CNPS SN Foothill Team 2006-5-25 SNNR 0959 Butte Horning Ranch, private. This stand lies between 2 previous RA stands and wraps around the southern tip of projecting finger into canyon. 185 Comment
  HSC23313  Pellaea mucronata var. mucronata D. C. Polen 1971-4-8 20 Butte 40 mi. N on Skyway, 7.4 mi. E of Skyway's jct. with 99E, Chico 274 Comment
  CHSC39673  Penstemon azureus var. angustissimus Lowell Ahart 1983-6-21 4097 Butte Growing 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
  UC726756  Penstemon azureus var. angustissimus A. A. Heller 1940-6-5 15701 Butte along the Feather River Highway e of the first [Feather River] crossing; along the Feather River highway e of first crossing Comment
  UC1602275  Penstemon deustus var. deustus E. B. Copeland 1931-6-11 690 Butte Jonesville Comment
  POM195767  Penstemon heterophyllus subsp. purdyi A. A. Heller 1926-4-21 13926 Butte Along Rock Creek, 7 miles N of Chico. (Type collected probably in the vicinity of Chico). Comment
  CHSC3360  Penstemon heterophyllus var. purdyi M. Gregg 1966-5-7 162 Butte 3 miles north east of the Skyway on Humbug Rd. Comment
  CHSC11885  Penstemon neotericus E. B. Copeland 1929-7-13 456 Butte Jonesville. 1650 Comment
  POM219250  Penstemon neotericus H. F. Copeland 1930-7-26 1378 Butte Jonesville. 1677 Comment
  SD4593  Penstemon neotericus E. B. Copeland 1929-7-13 456 Butte Jonesville, dry hilltop 1650 Comment
  SEINET10548093  Penstemon personatus Mary Susan Taylor 1982-8-16 Taylor 4998 Butte T24N R4E n/nw sec 12. Pulga NW quad. Along rd and in saddle, ca. 0.5 mi n of Bald Mt, ca. 4 air mi ne of Stirling City. Mixed Coniferous Forest; 5600- 5700 ft. 1737 Comment
  CHSC44729  Penstemon rydbergii R. Banchero 1980-6-26 266 Butte Chico Meadows, 0.95 mi N of the jct of Humboldt Rd and the Skyway. 1316 Comment
  CAS-BOT-BC239449  Penstemon rydbergii var. oreocharis Lyman Benson 1932-7-28 3965 Butte First summit, Oroville-Quincy, Sierra Nevada Mt. Range, Feather River 1828 Comment
  UC600440  Penstemon rydbergii var. oreocharis H. F. Copeland June, 1931 Butte Jonesville Comment
  CHSC39892  Pentagramma pallida Lowell Ahart 1984-2-3 4494 Butte Ca. 1/4 mile south of Cox Lane, east of the pole line tower; ca. 3.5 miles NE of Honcut. 100 Comment
  HSC66080  Pentagramma pallida M. S. Taylor 1980-3-30 2413 Butte N side of Big Chico Cr., Diversion Dam, upper Bidwell Park, Chico 244 Comment
  CHSC11326  Pentagramma triangularis Lowell Ahart 1968-3-11 Butte Peter Ahart Ranch, Honcut. 45 Comment
  RSA0094695  Pentagramma triangularis C. C. Bruce 1897-06 1861 Butte [No location data on label] Comment
  SEINET12326943  Pentagramma triangularis Unknown 1981-1 7 Butte ca 2 mi E of Humboldt Rd & Stillson Canyon Rd intersect. on Humboldt Rd 99 Comment
  CAS-BOT-BC77132  Pentagramma triangularis subsp. semipallida Lowell Ahart 1983-7-29 4241 Butte About 1/2 mile east of Milsap Bar, about 25 miles north-east of Oroville. 500 Comment
  SEINET12320811  Pentagramma triangularis subsp. semipallida M. S. Taylor 1980-1 2390 Butte Macabes Creek canyon, ca 100 ft E of Lumpkin Rd, ca 2.5 mi N of junction with Forbestown Rd 396 Comment
  CHSC86076  Pentagramma triangularis subsp. triangularis R. D. Fischer; Paul Maslin 2003-12-24 18 Butte Sierra Nevada Range, off Hwy 32 between Chico and Forest Ranch. Located about 150 yds. west of a wide pull out which, in turn, is about 200 yds. south of the gated main entrance to Big Chico Creek Ecological Reserve (BCCER). 548 Comment
  UC122975  Pentagramma triangularis subsp. triangularis Mrs. R. M. Austin 1879-1 Butte Cold Canyon Comment
  CAS-BOT-BC77082  Pentagramma triangularis subsp. triangularis Lowell Ahart 1980-3-16 2044 Butte Honcut, Peter Ahart Ranch 50 Comment
  SEINET12121867  Perideridia bacigalupii Unknown 1985-1 5163 Butte 50 yards S of road to Forbestown Res, about 2.5 mi NE of Forbestown 884 Comment
  UCD127897  Perideridia kelloggii W. S. Wilkinson 1921-7-16 s.n. Butte Chico. Comment
  CHSC113466  Perideridia lemmonii Lowell Ahart 2014-7-13 19667 Butte East part of a large wet meadow (some bog), about 150 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CHSC40308  Perideridia lemmonii Lowell Ahart 1985-8-11 5160 Butte Along the south side 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
  CHSC38742  Perideridia oregana Vernon Oswald 1983-6-9 657 Butte Upper Bidwell Park, Chico, beside Yahi Trail w of Brown's Hole. 182 Comment
  UC1532350  Perideridia oregana Vernon Oswald 1986-6-11 2109 Butte on Yahi Trail near Salmon Hole; Chico, Upper Bidwell Park 158 Comment
  CHSC45379  Persicaria hydropiperoides Vernon Oswald 1983-10-10 1063 Butte Bidwell State Park on the e side of the Sacramento R. w of Chico. Growing in shallow water along the edges of Tyler Slough at the Indian Fishery located at the jct. of W. Sacramento Ave. and River Rd. Comment
  CAS-BOT-BC418948  Persicaria lapathifolia Ira L. Wiggins 1928-9-9 3332 Butte Sandy Gulch Creek, 3 miles west of Chico Comment
  CHSC31771  Persicaria lapathifolia L. Ahart 1974-9-25 634 Butte Peter Ahart Ranch, Honcut. Garden weed. 45 Comment
  CHSC34055  Persicaria lapathifolia L. Ahart; M. S. Taylor 1981-8-15 3041 Butte On drying bottom of north side of Snag Lake, ca. 10 mi n of Inskip. 1500 Comment
  CHSC37072  Persicaria maculosa L. Ahart 1982-10-6 3845 Butte Along edges of North Honcut Creek, Peter Ahart Ranch, ca. 3 mi ne of Honcut. 50 Comment
  CHSC37111  Persicaria maculosa L. Ahart 1982-10-15 3891 Butte On bottom of North Honcut Creek, ca. 2.7 mi ne of Honcut. 50 Comment
  CHSC43101  Persicaria maculosa Pauleen Broyles 1987-10-26 1092 Butte The Nature Conservancy Vina Plains Preserve. Wurlitzer Parcel. Damp edges of manmade reservoir. 55 Comment
  JEPS127591  Persicaria pensylvanica B. Castro with Margie Graham and Stephanie Chun 2009-7-1 1798 Butte Sacramento Valley. 10 air mi W of Gridley, 0.4 mi S of Gridley Road, off SE bank of Cherokee Canal 0.2 mi NE of southward bend in canal. Sanborn Slough 7.5' Quad. Comment
  SJSU5410  Petrorhagia dubia C. D. Duncan 1963-5-4 Butte Neal Rd between Chico & Paradise 487 Comment
  JEPS26746  Phacelia corymbosa P. C. Hutchison 1961-6-9 2102 Butte at Pulga Bridge canyon of the north fork of the Feather River (on hwy US Alt. 40 and side road to Pulga) Comment
  CHSC31964  Phacelia distans J. D. Jokerst 1979-4-20 1213 Butte Top of North Table Mt, W edge of mountain. 396 Comment
  UC1299148  Phacelia egena Freed W. Hoffman 1951-3-19 3857 Butte lava cap bluff 16.3 mi from Chico (on road from Chico to Pentz) Comment
  SEINET12326938  Phacelia heterophylla Unknown 1980-1 18 Butte ca .75 mi E of Oroville Quincy Highway, 10 ft S of Lumpkin Rd 402 Comment
  CHSC39107  Phacelia mutabilis R. A. Schlising; M. S. Taylor 1980-7-5 3826 Butte N part of county, at first crossing of Butte Creek by Humboldt Road, just e of Butte Meadows. 1341 Comment
  UC426940  Phacelia procera E. B. Copeland 1930-7-11 447 Butte near Butte Creek; Jonesville 1550 Comment
  RSA718394  Phacelia purpusii L. Ahart 2006-7-16 12962 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
  SEINET10497021  Phacelia purpusii Mary Susan Taylor 1980-7-6 Taylor 3064 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
  UC600776  Phacelia racemosa H. F. Copeland 1930-7-28 Butte by So. Willow Creek; Jonesville 1828 Comment
  CAS-BOT-BC134035  Phacelia ramosissima var. ramosissima Charles Piper Smith 1914-7-2 2905 Butte Chico Creek foothills Comment
  POM207757  Phalaris brachystachys A. A. Heller 1902-5-3 5446 Butte Near Nelson 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-BC265889  Phalaris caroliniana A. A. Heller 1914-4-17 11307 Butte Hills 8 miles north of Oroville Comment
  SEINET10658625  Phalaris caroliniana A. Arthur Heller 1914-4-17 Heller 11307 Butte Hills 8 mi. North of Oroville Comment
  CHSC27162  Philadelphus grandiflorus M. MacArthur 1968-6-17 306 Butte SE yard of Building U n Chico State College campus. 60 Comment
  CAS-BOT-BC77375  Philadelphus lewisii Mrs. J. H. Morrison 1932-6-12 s.n. Butte Mountains above Durham Comment
  CHSC28558  Phleum pratense M. S. Taylor 1978-7-21 1814 Butte On s side of Oroville-Quincy Hwy along a creek in a meadow, ca. 14 mi n of Lake Madrone. 548 Comment
  RSA325180  Phoradendron bolleanum subsp. densum M. S. Taylor, Vernon H. Oswald 1984-4-4 5396 Butte At jct of Coutelenc Road and the Skyway, Magalia, just N of Paradise. 372 Comment
  CHSC20109  Phoradendron densum M. S. Taylor 1975-4-9 569 Butte In serpentine area ca. 50 yds e of the Skyway, ca. 1/4 mi n of the De Sabla turnoff, Magalia. 731 Comment
  CHSC116304  Phoradendron serotinum subsp. macrophyllum Lowell Ahart 2015-11-18 20667 Butte On the west side of the Feather River, about 1/2 mile south of Palm Avenue, about 1 1/2 miles southeast of the intersection of Palm Avenue and Larkin Road, about 5 miles (air) northeast of Gridley. 26 Comment
  CAS-BOT-BC141249  Phoradendron serotinum subsp. tomentosum Lowell Ahart 1980-9-10 2621 Butte Little Bald Rock 335 Comment
  CHSC31465  Phoradendron villosum M. S. Taylor 1981-1-5 3373 Butte Ca. 100 ft e of Pentz-Magalia Hwy, ca. 1 mi s of Kunkle Reservoir, ca. 3 mi s of Paradise. 411 Comment
  RSA754576  Phoradendron villosum L. Ahart 2009-4-17 15559 Butte S slope of a ridge, about 150-200 yards W of Highway 32, near the S boundary, Upper Bidwell park, about 5 air miles NE of Chico. 373 Comment
  SEINET10492851  Phoradendron villosum Mary Susan Taylor 1979-10-13 Taylor 2256 Butte T22N R4E sw 1/4 sec 21. Yellow Pine Forest and Foothill Woodland transition zone on Jordan Hill Road (Ponderosa Way on some maps), ca. 4.0 mi N of its jct with Concow Road, ca. 3 mi E of Paradise. With Jim Jokerst. 610 Comment
  CHSC26651  Physalis acutifolia M. S. Taylor 1977-11-10 1507 Butte Orchard, n side of Crauch Rd at jct of Crauch and Lone Pine Aves., ca. 4 mi s of Chico. 45 Comment
  CHSC49438  Physalis acutifolia Vernon Oswald 1983-10-10 1066 Butte Near Chico on Bell Rd. ca. 1/2 mi s of the Mud Creek Diversion Channel. Along the edge of a young orchard. Comment
  RSA726339  Physalis lancifolia L. Ahart 2007-8-19 14494 Butte North strand of a reservoir, about 2.25 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville. 49 Comment
  CHSC34220  Physocarpus capitatus M. S. Taylor 1981-5-27 3805 Butte Along creek on Phillips property, 685 Wagstaff, Paradise. 579 Comment
  CHSC46365  Pickeringia montana Lowell Ahart 1989-5-29 6304 Butte Along Robinson Mill Road, about 1 1/2 miles south of Forbestown Road. 670 Comment
  UCSB45758  Pilularia americana Reisentz, Paul 1979-5-13 Butte 1 mi S of Derrick Road from Cherokee Road, 6 mi N on Derrick Road from Table Mnt. Road. Comment
  SEINET10530356  Pilularia americana Mary Susan Taylor 1980-3-28 Taylor 2396 Butte T22N R2E E center sec 31. Vernal pool area in Valley Grassland, just E of Chico, NE corner of jct of Notre Dam Blvd and the Skyway, ca. 1/8 mi E of Hwy 99. 69 Comment
  NY61630  Pinus lambertiana E. B. Copeland 1929-7-19 332 Butte This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  CAS-BOT-BC78937  Pinus monticola Dr. E. B. Copeland 1929-7-17 331 Butte Above Jonesville 2000 Comment
  NY61952  Pinus monticola E. B. Copeland 1929-7-17 331 Butte This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  CHSC5976  Pinus mugo var. mughus M. MacArthur 1968-6-12 143 Butte SW wall of PSA bld., Chico State College campus. 60 Comment
  CHSC77414  Pinus sabiniana Laura Bogni 1997-3-25 6 Butte Magalia grove; west side of Coutelenc Rd.; 1 mi. due W of Sawmill Peak; 1/2 mi. SE of Magalia Reservoir. 701 Comment
  CHSC65819  Piperia michaelii Tim Devine; Wes Dempsey 1995-5-6 Butte Just east of Altantina Drive and about 0.3 mi east of Hwy 32 between Ten-mile House and Fourteen-mile House. 560 Comment
  CHSC25253  Piperia transversa M. S. Taylor 1977-6-26 1388 Butte Ca. 2 mi. e of Cohasset. 762 Comment
  CHSC54457  Piperia transversa Vernon H. Oswald; Lowell Ahart 1991-7-15 4732 Butte Forest Rd 23N60 (Jordan Creek-Marble Creek Rd), just east of its junction with Oroville-Quincy Hwy, ca. 4.75 miles (air) northeast of Brush Creek. 1109 Comment
  CHSC65869  Piperia transversa L. P. Janeway 1995-7-16 4862 Butte Along Jordan Hill Road 0.3 mi south of the turn to Sawmill Peak Lookout; about 2 mi east of Magalia. 929 Comment
  CHSC34785  Piptatherum miliaceum L. Ahart 1981-9-26 3207 Butte Near the Sacramento River s of the washout, ca. 6 mi w of Chico. 40 Comment
  CHSC27216  Pittosporum tenuifolium P. Moyer 1972-3-18 149 Butte CSUC Campus. Behind Adm. Bldg. 60 Comment
  SEINET10529818  Pityrogramma triangularis Mary Susan Taylor 1980-4-6 Taylor 2447 Butte T8N R5E ec border sec 3. Junction of Rocky Honcut Creek and Swedes Flat Rd, ca. 2 mi E of Oroville-Bangor Hwy, ca. 10 mi SE of Oroville. With L. Ahart & J.D. Jokerst. 366 Comment
  POM287609  Plagiobothrys Lyman Benson 1935-3-27 6356 Butte U.S. 99E, Gridley. 30 Comment
  UC398679  Plagiobothrys canescens A. A. Heller 1926-4-21 13935 Butte 7 mi n Chico; Rock Creek Comment
  UC79364  Plagiobothrys cusickii Mrs. R. M. Austin Butte Comment
  SEINET10781184  Plagiobothrys fulvus Lowell Ahart 2010-5-16 Ahart 16684 Butte T20N, R4E, northeast 1/4 Section 20. Normal size plants, on dry to damp soil, open grassland, about 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. Basalt Grassland. 372 Comment
  POM368935  Plagiobothrys fulvus var. campestris H. F. Copeland 1929-4-5 1128 Butte Near Chico. Comment
  CHSC32127  Plagiobothrys glyptocarpus L. Ahart 1978-4-27 1667 Butte Along edges of small wash. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC103738  Plagiobothrys glyptocarpus var. glyptocarpus Lowell Ahart 2010-5-16 16688 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 371 Comment
  JEPS94146  Plagiobothrys glyptocarpus var. glyptocarpus Lowell Ahart 1998-6-9 8001 Butte ca. 7 mi. (air) n. Oroville (ca. 0.5 mi. n.w. of the lone oak tree, n.w. of the cow chute along Cherokee Rd., North Table Mt.); North Table Mt. 396 Comment
  CAS-BOT-BC228252  Plagiobothrys hispidulus A. A. Heller 1914-6-22 11496 Butte W slope of Sierra Nevada at Chico Meadows 1219 Comment
  JEPS108771  Plagiobothrys hispidulus Lowell Ahart 2006-7-16 13001 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
  UC1601347  Plagiobothrys hispidulus A. A. Heller 1914-6-22 11496 Butte Chico Meadows 1219 Comment
  CHSC46251  Plagiobothrys leptocladus Vernon Oswald 1989-4-20 3749 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch), on the ranch road ca. 0.3 mi n of the main gate at Gridley-Colusa Hwy. 18 Comment
  POM71480  Plagiobothrys nothofulvus C. C. Bruce 1897-03 1927 Butte Foothill plains. Comment
  SEINET10497553  Plagiobothrys nothofulvus Mary Susan Taylor, K. Tharp 1983-3-12 Taylor 5239 Butte T22N R2E nw sec 27. Chico quad. Along small rd off Stillson Canyon Rd (leading to Mannion property), ca. 3 mi sse of Chico. Elevation ca. 500 ft. 152 Comment
  UC480700  Plagiobothrys nothofulvus H. F. Copeland 1923-2-25 600 Butte cliff above Butte Creek Comment
  CHSC29017  Plagiobothrys scriptus M. S. Taylor; J. D. Jokerst 1980-3-28 2405 Butte Around vernal pools, just e of Chico, between Humboldt Rd and Hwy 32, ca. 1/4 mi e of Forest Ave., ca. 1 1/2 mi e of Hwy 99. 76 Comment
  CHSC31552  Plagiobothrys shastensis L. Ahart 1977-4-15 1294 Butte Peter Ahart Ranch, Honcut. In pasture fields. 50 Comment
  CHSC35068  Plagiobothrys shastensis R. A. Schlising 1981-4-6 4018 Butte W of Oroville and SW of Thermalito, at S border of Oroville Municipal Airport; off Larkin Road, 1.2 mi S of jct with Hwy 162. Comment
  CHSC78129  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2000-6-6 8451 Butte On the sides of an old gold mining pit, southeast of where the dirt road crosses Oregon Gulch creek, about 1/4 mile northeast of the cemetery, about 1 1/2 mile south of Crystal Hill, about 5 miles (air) east of Oroville Dam. 304 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
  CHSC46775  Plagiobothrys tenellus Lowell Ahart 1980-4-30 2139 Butte Near the bridge across Rocky Honcut Creek and Swedes Flat Road, about 3 miles east of the Bangor Oroville Highway, north of Bangor. 304 Comment
  RSA0118696  Planodes virginica Lowell A. Ahart 2014-4-9 19325 Butte Rice field, near the pump, on the north side of Colusa Highway, about 0.4 mile east of the intersection of Pennington Road and Colusa Highway, about 5.5 miles west of Gridley. 23 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
  CHSC47455  Plantago coronopus Lowell Ahart 1968-5-8 19 Butte Growing along roads, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 39 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
  JEPS119682  Plantago elongata Lowell Ahart 2012-5-4 17981 Butte About 1/2 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  HSC92462  Plantago elongata L. Ahart 1984-4-24 4854 Butte Peter Ahart Ranch, 2 mi. N and .5 mi. E of Honcut, 12 mi. S of Oroville 37 Comment
  RSA590213  Plantago erecta Michael A. Vincent, Robert M. Rhode, Jim Snowden 1996-3-29 7228 Butte North Table Mountain, W of Cherokee Rd. N of Oroville. S side of Beatson Hollow, from center to west edge of butte. Comment
  CHSC55392  Plantago hookeriana Dan Morgan 1991-4-21 17 Butte Indian Springs Road, 0.3 mi west of Neal Road, Paradise. 243 Comment
  CHSC88146  Plantago lanceolata Lowell Ahart 2004-7-23 11303 Butte In a small meadow, on the west side of the road, north of the West Branch Campground, south of the Bridge across the West Branch of the Feather River, about 1 1/2 miles (air) west of Philbrook Reservoir Dam, about 3 3/4 miles (air) southeast of Butte Meadows. 1456 Comment
  SEINET10499812  Plantago lanceolata Mary Susan Taylor 1978-9-8 Taylor 1892 Butte Along flood control slough, ca. 4 mi N of Chico, along Hwy 99. 61 Comment
  UCD138966  Platanthera dilatata var. leucostachys Kenneth D. Stewart 1965-7-7 s.n. Butte around 25 miles northeast of Chico on State Highway 32. Comment
  SBBG127997  Platanus racemosa L. Ahart 2009-8-23 16296 Butte W side of Ten Mile House Rd, Upper Bidwell Park, ca. 0.75 mi W of Hwy 32, ca. 10 mi NE of Chico 209 Comment
  UC176196  Platystemon californicus A. A. Heller 1913-4-6 10718 Butte along Big Chico Creek (e of Chico) Comment
  CHSC38754  Plectritis macrocera Vernon Oswald 1983-3-5 115 Butte Upper Bidwell Park, on the north rim at a level w of Horseshoe Lake. 128 Comment
  CHSC86140  Pleuricospora fimbriolata John Dittes 2002-6-29 628 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
  HSC66331  Pleuricospora fimbriolata M. S. Taylor 1980-8-2 3210 Butte Humboldt Summit, 100ft. W of Old Humboldt Rd. 2012 Comment
  CHSC8589  Poa annua D. McClain 1969-3-30 34 Butte Across Warner St. from the South Gymnasium on Chico State College campus, Chico. 57 Comment
  CHSC105505  Poa bolanderi Lowell Ahart 2010-9-21 17198 Butte On damp humus, under firs, about 50 yards east of the poor dirt road, about 100 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrood Reservoir. 1917 Comment
  CAS-BOT-BC255063  Poa compressa John Thomas Howell 1962-6-16 37578 Butte Pentz Road 2 miles S of Magalia 609 Comment
  CHSC59055  Poa compressa Lowell Ahart 1992-8-2 6897 Butte Along Concow Creek, in Concow Meadow, about 3 (air) miles north-east of Concow Reservoir. 1097 Comment
  CHSC8588  Poa pratensis D. McClain 1969-4-18 64 Butte 100 yds. s. of Upper Bidwell Rd., 4.5 mi. e. of Upper Bidwell Park Entrance, Chico. 67 Comment
  CHSC29742  Poa secunda subsp. secunda J. D. Jokerst 1980-4-21 632 Butte Top of North Table Mt., several miles N of Cherokee Rd. 457 Comment
  CHSC92585  Poa secunda subsp. secunda L. P. Janeway; Jamie Tuitele-Lewis, Matt Brown, Samantha Hillaire 2005-5-10 8386 Butte Northern High Sierra Nevada. Plumas National Forest; southeast-facing slope above North Fork Feather River between Lockerman Creek and Cedar Creek. 1116 Comment
  JEPS108569  Poa secunda subsp. secunda L. P. Janeway, J. Tuitele-Lewis, M. Brown, S. Mackey Hillaire 2005-5-10 8386 Butte Northern High Sierra Nevada. Plumas National Forest; southeast-facing slope above North Fork Feather River between Lockerman Creek and Cedar Creek 1116 Comment
  CHSC107922  Poa sierrae L. P. Janeway 2011-7-18 10515 Butte Northern High Sierra Nevada. Plumas National Forest; along Dome Trail 0.7 km northeast of the trailhead, 1.0 air km southeast of Bald Rock Dome. 725 Comment
  CHSC39500  Poa sierrae Lowell Ahart 1983-5-28 4026 Butte Along the trail to the over-look to Feather Falls, about 2 1/2 miles north of the town of Feather Falls. 600 Comment
  HSC66211  Pogogyne zizyphoroides Jane A. Rogers 1979-4-17 13 Butte Intersection of Hwy. 99E and Broyles Rd., 11 mi. N of Chico 55 Comment
  CHSC23540  Poinciana gilliesii M. S. Taylor 1975-6-21 778 Butte Ca. 1 mi w of Esplanade on W. 11th Ave, Chico. Comment
  CHSC33649  Polanisia dodecandra subsp. trachysperma M. Merryman; R. Banchero 1979-9-23 43 Butte SW of Chico, just e of Ord Ferry and Sacramento River. 30 Comment
  CHSC49836  Polycarpon tetraphyllum Vernon H. Oswald 1990-4-2 4142 Butte Bedrock Park on the e side of the Feather River in Oroville. Margin of a slough. 42 Comment
  CHSC1314  Polygala cornuta V. Holt 1931-6-3 Butte Forest Ranch. 548 Comment
  CHSC37555  Polygala cornuta T. B. Devine 1977-7-24 437 Butte Beside Humbug Road near P.G. and E. ditch about 3/4 mi N of DeSabla. 853 Comment
  CHSC4731  Polygala cornuta R. Carter 1966-6-12 425 Butte 1.5 mi. S of Big Bald Rock along W side of Bald Rock Rd., on bank above road; ca. 17 mi. E of Oroville. Comment
  UCD109713  Polygala cornuta L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  CHSC96818  Polygala cornuta var. cornuta Lowell Ahart 2007-5-29 13921 Butte About 1/8 mile south of Bald Rock Dome, on the east side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 1/4 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. 685 Comment
  SEINET4335262  Polygonum R. McKee 1918-9-24 s.n. Butte Chico, Bidwell grounds Comment
  JEPS104287  Polygonum amphibium var. emersum Lowell Ahart 2003-6-16 10287 Butte In a ditch on the w side of Wickman Rd, ca 1 mi south of Richvale West Rd, ca 1 1/2 mi (air) sw of Richvale. 28 Comment
  CDA2832  Polygonum arenastrum L. Ahart 1998-7-1 8035 Butte Along the fence, east of the cow chute and on the east side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  CHSC112725  Polygonum aviculare Lowell Ahart 2013-10-26 19217 Butte South side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. 1681 Comment
  CHSC83052  Polygonum aviculare Lowell Ahart 2002-10-17 9991 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
  POM181761  Polygonum aviculare H. F. Copeland 1923-7-4 559 Butte Nelson Comment
  SEINET10838838  Polygonum aviculare Mary Susan Taylor 1975-5-24 Taylor 770 Butte Lower Bidwell park, between Cork Oak Grove and Cypress Grove Picnic Area, Chico. 61 Comment
  CAS-BOT-BC414191  Polygonum aviculare subsp. depressum Lowell Ahart 1976-9-21 s.n. Butte Along the edge of the road 1/8 mile east of Golden Trout Crossing, a bridge across South Fork Feather Riv; about 3 miles west of Sly Creek Reservoir Comment
  CDA22759  Polygonum bidwelliae Sterling O. Mattoon 1971-5-25 Butte Canyon overlook, Skyway, near Paradise. 0 Comment
  CHSC103978  Polygonum bidwelliae Lowell Ahart 2010-5-7 16622 Butte On the south side of a trail, west of disk golf area, on a ridge about 350 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 353 Comment
  UC1259773  Polygonum bidwelliae Lowell Ahart 1979-5-7 Butte ca 1/2 mi n Kunkle Reservoir (ca 1/4 mi of the Pentz-Magalia Hwy, 2 1/2 mi se of Paradise) 472 Comment
  UC204383  Polygonum bidwelliae A. A. Heller 1914-5-18 11409 Butte near Hog Springs (6 mi e of Chico) Comment
  SEINET11934608  Polygonum bidwelliae Unknown 1988-1 29 Butte Salmon Hole, ca.5 mi E of Chico Municipal Golf Course 122 Comment
  UC1561016  Polygonum bolanderi Dean W. Taylor 1988-8-12 10048 Butte road to Butte Meadows 3.2 mi ne Highway 32 1341 Comment
  SBBG29161  Polygonum douglasii E. B. Copeland 1930-7-24 Butte Jonesville 1500 Comment
  POM280362  Polygonum douglasii Lyman Benson 1932-7-28 3973 Butte First summit, Oroville-Quincy. Sierra Nevada Range, Feather River watershed. 1829 Comment
  JEPS103454  Polygonum lapathifolium Lowell Ahart 2002-10-17 9992 Butte On the gentle hills below the high water line of Lake Oroville, ca 1 1/2 miles S of Highway 162 (Oroville Quincy Highway), ca 3 miles (air) NE of Oroville Dam. 227 Comment
  CHSC30947  Polygonum parryi L. Ahart 1980-7-4 2457 Butte In the tracks of a dirt rd near the Oak Grove Cemetary, ca. 1/2 mi se of Hurleton. 600 Comment
  CHSC63718  Polygonum parryi Lowell Ahart 1994-10-9 7558 Butte On dry fine broken lava of a bulldozer trail, on the south west part of Jackass Flat, about 1 mile (air) west of the Lost Creek Reservoir. 1158 Comment
  UC1609433  Polygonum parryi Lowell Ahart 1993-6-20 6985 Butte about 1 air mi nw Lost Creek Reservoir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  UC1586574  Polygonum phytolaccifolium Lowell Ahart 1991-8-25 6709 Butte along creek about 2 mi nw Four Trees (about 2 mi w of the Oroville-Quincy Hwy, about 2 mi e of Coyote Gap); Wildcat Creek 1219 Comment
  POM120121  Polypodium californicum C. C. Bruce 1897-01 1868 Butte Little Chico Comment
  SFV10663  Polypodium californicum M. L. Vincent 1964-4-8 510 Butte Sierra Nevada PG&E powerplant, Feather River Canyon. 2 miles northeast of new bridge. 475 Comment
  CAS-BOT-BC71861  Polypodium californicum Ellen Deehan 1975-4-22 20 Butte S side of Big Chico Creek, opposite Chico Municipal Golf Course, Chico 60 Comment
  CAS-BOT-BC71875  Polypodium californicum E. B. Copeland 1902-12-1 s.n. Butte Chico Canyon Comment
  CHSC28504  Polypodium calirhiza M. S. Taylor; J. D. Jokerst 1979-10-13 2254 Butte By creek crossing Jordan Hill Rd (Ponderosa Way on some maps) ca. 0.8 mi n of its jct with Concow Rd, ca. 5 mi e of Paradise, 426 Comment
  CHSC39614  Polypodium calirhiza Lowell Ahart 1983-3-28 3911 Butte On the east bank of Woodleaf Creek, above the road, about 3/8 mile south-west of the Forbestown Res., about 4 miles north-east of Forbestown. 450 Comment
  UC204879  Polypogon australis A. A. Heller 1914-5-19 11419 Butte 8 mi n Oroville Comment
  CAS-BOT-BC233057  Polypogon interruptus Lowell Ahart 1977-6-2 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  UC1609522  Polypogon interruptus Lowell Ahart 1993-5-15 6941 Butte on the n side of Biggs Princeton Road about 2 mi w Biggs 30 Comment
  UCD91195  Polypogon maritimus A. A. Heller 1914-5-13 11398 Butte Low adobe places near Butte creek between Durham and Nelson. Comment
  SEINET10507584  Polypogon maritimus Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4158 Butte T20N R5E se sec 11. Along Ponderosa Way (Big Ridge Rd), ca. 1.5 mi e of its jct with East Fork Canyon Creek, ca. 15.5 mi ne of Oroville. Foothill Woodland. 600 Comment
  CAS-BOT-BC232575  Polypogon monspeliensis Lowell Ahart 1983-6-26 4150 Butte Along Ponderosa Way, ca. 1.5 miles SE of the E Fork of Canyon Creek, ca. 14.5 miles NE of Oroville 575 Comment
  CHSC46106  Polypogon monspeliensis L. Ahart; M. S. Taylor, J. D. Jokerst 1982-4-29 1536 Butte Just north of Rutherford Rd. ca 100 met. west of its junction with Pennington Rd. Grey Lodge Waterfowl Management Area. Comment
  CHSC66177  Polypogon monspeliensis Vernon H. Oswald; Lowell Ahart 1996-5-27 7663 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 S side of the levee road at the SW corner of Tract 3.4, Sanctuary II. 32 Comment
  CHSC84396  Polystichum imbricans subsp. imbricans Lowell Ahart 2003-7-30 10459 Butte Along a small stream, on the north side of Little Bald Rock, on the south side of Bean Creek road, about 2 miles (air) southeast of Brush Creek. 1000 Comment
  CAS-BOT-BC76654  Polystichum munitum Lowell Ahart 1981-11-8 3231 Butte Near the Golden Trout Crossing. 800 Comment
  CHSC108758  Populus fremontii subsp. fremontii L. P. Janeway 2011-5-9 10254 Butte Sacramento Valley. South side Feather River just east of Bedrock Park, Oroville; about 10-15 m back from the edge of the water. 42 Comment
  CHSC11790  Porterella carnosula E. B. Copeland 1929-7-29 397 Butte Above Jonesville. 1750 Comment
  CDA802  Potamogeton diversifolius L. Ahart 1999-6-12 8089 Butte Shallow water of a pond on the W side of the dam, large reservoir N of large reservoir N of Beatson Hollow, North Table Mountain, about 2 1/2 miles (air) W of the entrance gates along the W side of Cherokee Road, about 7 miles (air) N of Oroville. Comment
  CHSC88230  Potamogeton diversifolius Lowell Ahart 2004-7-11 11226 Butte On the southeast shore 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
  CHSC51379  Potamogeton nodosus Vernon Oswald 1990-8-14 4433 Butte Upper Miocene Canal just upstream from Kunkle Reservoir, on the east side of Pentz-Magalia Hwy south of Paradise. In the south end of the canal. 441 Comment
  CAS-BOT-BC143108  Potentilla breweri V. Oswald; L. Ahart 1888-7-26 3619 Butte Snow Mt. region located ca. 6 air mi se of Jonesville 1996 Comment
  UC1564800  Potentilla drummondii V. Oswald and L. Ahart 1989-7-12 3855 Butte ca 2 air mi sw Lotts Lake (ca 3 air mi se of Philbrook Reservoir); meadow near headwaters of Big Kimshew Creek 1901 Comment
  CHSC1573  Potentilla glandulosa G. Herrington 1930-4-11 Butte Centerville road. 182 Comment
  CHSC45609  Potentilla glandulosa subsp. glandulosa L. P. Janeway 1987-5-20 2079 Butte Along Hwy 70 2.1 mi NE of Pulga Bridge; N Fk Feather River near Heinz Cr. 472 Comment
  CHSC46315  Poteridium annuum Vernon Oswald 1989-6-8 3804 Butte Concow Rd at Flea Valley. On the edge of a meadow. 1118 Comment
  CHSC1065  Proboscidea lutea E. Walker 1941-9-6 Butte Oroville road. 60 Comment
  CHSC94461  Prunus Lowell Ahart; Mike G. Womack 2006-8-29 13241 Butte Near pump 24, about 1/4 mile southwest of Parking Lot 9, about 1 1/2 miles east of Pennington Road, Gray Lodge Wildlife Area (Gray Lodge Waterfowl Management Area). 21 Comment
  CHSC70838  Prunus cerasifera Vernon Oswald 1998-4-12 8902 Butte Upper Bidwell Park (new addition), Pine Trail between the trailhead on Hwy. 32 opposite Santos Rd. (between Chico and Forest Ranch) and South Rim Trail. 441 Comment
  CHSC93520  Prunus subcordata L. P. Janeway; Dan Lubin 2006-5-9 8581 Butte Northern High Sierra Nevada. Head of small side drainage into Concow Creek; between Concow Creek and Cirby Creek, 2.6 km north of the upper end of Concow Reservoir. In west-facing dry bowl. 750 Comment
  JEPS108573  Prunus subcordata L. P. Janeway, Matt Brown, Jamie Tuitele-Lewis 2005-4-12 8362 Butte High Cascade Range. Plumas National Forest; 12 m from the northeast shore of Paradise Lake, about 485 m east-southeast of the uppermost tip of the lake 777 Comment
  CHSC97356  Prunus virginiana var. demissa Paul Maslin 2005-5-5 51 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 106100198E 4411262N. 268 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
  UCD134978  Pseudobahia heermannii M. S. Taylor 1980-4-1 2423 Butte overlooking Butte Creek, in Foothill Savannah around 1/4 mile downstream from Honey Run Covered Bridge, around 6 miles east of Chico. 182 Comment
  CHSC88074  Pseudognaphalium californicum R. D. Fischer 2004-6-6 159 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located just within park property at the 10 Mile House Road parking area off Hwy 32, on ridge top. 464 Comment
  CHSC76829  Pseudognaphalium luteoalbum L. P. Janeway 1999-11-15 6627 Butte Northern Sierra Nevada foothills. Along drainages below high water line of Lake Oroville, below Nelson Bar Road about 0.6 mi north-northwest of Lime Saddle. Ravines below forest. 274 Comment
  CHSC58903  Pseudostellaria jamesiana Lowell Ahart 1992-7-21 6815 Butte Under large fir trees, north-west of a snow lake, on the south side of Coon Hollow, about 2 (air) miles northeast of Philbrook Reservoir. 1737 Comment
  UCR64449  Pseudostellaria jamesiana H. F. Copeland 1931-6-10 1526 Butte Jonesville, between Jones and Willow Creeks 1524 Comment
  SEINET10530889  Pseudotsuga menziesii Mary Susan Taylor 1976-2-22 Taylor 1000 Butte Yellow Pine Forest, ca. 2 mi N of Cohas st, ca. 10 ft E of Cohasset Hwy. 610 Comment
  CAS-BOT-BC361741  Psilocarphus brevissimus var. brevissimus Lowell Ahart 1980-5-4 2160 Butte Thermalito 65 Comment
  CHSC116694  Psilocarphus brevissimus var. brevissimus Lowell Ahart 2016-5-17 20838 Butte Middle of a large vernal pool, about 1/2 mile east of La Porte Road, about 2 1/2 miles (air) east of Honcut. 47 Comment
  CAS-BOT-BC361824  Psilocarphus oregonus Lowell Ahart 1970-5-12 s.n. Butte Sutter Buttes Area. Peter Ahart Ranch, Honcut 150 Comment
  CAS-BOT-BC361918  Psilocarphus tenellus Lowell Ahart 1979-5-11 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  SEINET10904902  Psilocarphus tenellus Lowell Ahart 1983-8-16 Ahart 4304 Butte T26N R4E section 32. Near Bull Hill Road, ca. 3 miles south of Butte Meadows. Yellow Pine Forest; 1450 m. 1450 Comment
  CHSC82429  Psilocarphus tenellus var. globiferus Lowell Ahart 2002-5-7 9612 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. 228 Comment
  CHSC20254  Pteridium aquilinum var. pubescens W. E. Hartman 1972-4-29 2 Butte Along road side opposite Centerville Cemetary. 213 Comment
  CAS-BOT-BC460486  Pterospora andromedea A. A. Heller 1914-8-8 11670 Butte At Jonesville 1524 Comment
  RSA0002616  Pterospora andromedea E. B. Copeland 1931-7-15 668 Butte Jonesville 1550 Comment
  CHSC63642  Pycnanthemum californicum B. Castro 1993-8-6 495 Butte Ca 100 ft E of Concow Rd, ca 5.1 mi NW of Hwy 70, ca 0.4 mi E of Concow Reservoir. Behind Golden Feather Volunteer Fire Station at jcn Concow Rd and Ishi Trail Rd. 640 Comment
  RSA0080631  Pyrola dentata L. Ahart 2006-7-11 12943 Butte 100 yards south of Humboldt Road, about 1 3/8 miles (air) southwest of Butte Meadows. 1401 Comment
  CHSC11802  Pyrola picta E. B. Copeland 1930-7-29 435 Butte Jonesville. 1600 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
  CHSC5960  Quercus M. MacArthur 1968-6-17 195 Butte Half way between Big Chico Creek and SW entrance of LS bld., Chico State College campus. 60 Comment
  RSA134789  Quercus berberidifolia Percy C. Everett, E. K. Balls 1959-10-20 23907 Butte 8.6 miles ne. from Chico along State Hwy. 32, toward De Sabla. 488 Comment
  SEINET10477144  Quercus chrysolepis Mary Susan Taylor 1980-5-27 Taylor 2659 Butte T21N R6E sc sec 30. Big Bend quad. On trail (around parking lot) to Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, granitic soils. 998 Comment
  CAS-BOT-BC86635  Quercus douglasii Lowell Ahart 1981-7-7 2919 Butte About 0.5 mi W of the Oroville Forbestown Road on the Black Bart Road, W of Forbestown 700 Comment
  UCD169291  Quercus garryana var. breweri L. P. Janeway; B. Castro 2006-5-7 8576 Butte Top of serpentine area southeast of the east end of Hollywood Road, upper Magalia; more or less overlooking Little Butte Creek about 600 m north-northwest of the upper end of Magalia Reservoir. 759 Comment
  RSA87180  Quercus lobata E. E. Stanford 1930-6-15 1549 Butte Near Chico. Comment
  UCD47472  Quercus vacciniifolia J. I. Mallory 1970-8-20 379 Butte 3/4 mile north of Ramsey Bar, ca. 10 miles northeast of Stirling City, Butte County, California. 1402 Comment
  CAS-BOT-BC104693  Quercus wislizeni John Thomas Howell 1955-6-15 30490 Butte 6 miles from Paradise on road to Pentz 426 Comment
  UC1135901  Quercus wislizeni J. E. Sowder 1933-7-1 101 Butte Promontory Peak, SW slope 1005 Comment
  JEPS110548  Quercus wislizeni var. wislizeni Lowell Ahart 2006-10-15 13508 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 mile north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville 59 Comment
  CHSC20721  Ranunculus aquatilis var. capillaceus M. S. Taylor 1975-8-31 890 Butte On edge of Ernies Island in Butte Creek, ca. 50 ft s of Humboldt Rd, ca. 1/2 mi e of Butte Meadows. 1341 Comment
  CAS-BOT-BC379115  Ranunculus aquatilis var. diffusus E. B. Copeland 1929-7-28 360 Butte Jonesville 1500 Comment
  HSC40652  Ranunculus arvensis J. P. Smith 1974-4-20 7344 Butte 1.0 mi. E of Hwy. 99 61 Comment
  CHSC35694  Ranunculus bonariensis var. trisepalus J. D. Jokerst 1982-4-19 1534 Butte Around the edges of a vernal pool at its high water mark. Ca. 200 meters S of the triangular intersection of Cherokee Rd. and Oregon Gulch Rd. Comment
  CHSC84251  Ranunculus canus var. canus Lowell Ahart 2003-5-28 10228 Butte Edges of a vernal pool, about 100 feet west of Hendricks ditch, about 1 3/4 miles northwest of the iron gate and fence, northwest of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 271 Comment
  UC827668  Ranunculus canus var. canus A. A. Heller 1914-5-13 11393 Butte in a field near Nelson (type was collected in this region by Hartweg) Comment
  CHSC53700  Ranunculus hebecarpus Kirsten Tarp 1982-4-8 111 Butte Near Oroville Dam. Comment
  CHSC52794  Ranunculus occidentalis M. S. Taylor 1979-3-31 1963 Butte Lickey Property, along Ishi Trail Rd, ca. 1/2 mi ne of Concow Rd, and Lake Concow, ca. 25 mi n of Oroville. 670 Comment
  RSA718079  Ranunculus occidentalis var. ultramontanus L. Ahart 2006-7-16 12997 Butte NW edge of Willow Creek, 3/4 airmile NW of Jonesville, 5 airmiles NE of Butte Meadows. 1516 Comment
  CHSC52693  Ranunculus orthorhynchus var. orthorhynchus Kirsten Tarp 1983-7-31 316 Butte S of Butte Creek House ca. 32 air miles ne of Chico; in meadow. 1828 Comment
  JEPS95340  Ranunculus sardous Lowell Ahart 1994-6-6 7312 Butte 3 1/2 air miles NW of Oroville (N of the corral, on N side of the bend in Cottonwood Road, about 1/4 mi W of Hwy 70) 57 Comment
  CHSC43729  Ranunculus uncinatus var. parviflorus Vernon Oswald; M. S. Taylor 1985-5-30 1791 Butte Four Trees Rd. 0.2 mi w of the S. Branch of Mill Creek. Along the road near an intermittent stream. 810 Comment
  RSA256670  Raphanus sativus J. L. Hobson 1974-4-20 19 Butte 300 yrds along Pentz Road from the intersection of Clark and Pentz Roads. Comment
  SEINET13946269 Image available Rhamnus californica Lewis S. Rose 1955-1 55097 Butte Magalia; 2400 ft alt. 732 Comment
  CDA35702  Rhamnus californica subsp. californica L. Ahart 2002-9-9 9937 Butte 100 yards south of the intersection of Black Bart Road and Forbestown Road, about 3 1/2 miles (air) southwest of Forbestown Comment
  CHSC88070  Rhamnus ilicifolia R. D. Fischer 2004-6-6 156 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located on Guardian Trail just south of the 10 Mile House Road junction. 420 Comment
  CHSC82376  Rhamnus tomentella subsp. tomentella Lowell Ahart 2002-6-2 9676 Butte West of a small open dry meadow, southwest of the intersection of Black Bart Road and Forbestown Road, about 3 miles (air) southwest of Forbestown. 670 Comment
  UC175334  Rhamnus tomentella subsp. tomentella A. A. Heller 1912-5-23 10753 Butte n of Oroville (Table Mountain Olive Ranch) Comment
  CAS-BOT-BC199745  Rhododendron occidentale var. californicum Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  CAS-BOT-BC168023  Rhus aromatica Lowell Ahart 1989-5-28 6293 Butte In openings south of Oregon Gulch Road, about 1/2 mile north of the [Cementery] Cemetery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville 335 Comment
  CAS-BOT-BC168127  Rhus aromatica Lowell Ahart 1983-4-10 3927 Butte About 1 1/2 miles north-east of Highway 99 & Pentz Road 100 Comment
  CHSC7043  Rhus aromatica Richard Juvenal 2001-3-25 16 Butte Honey Run' road ca.3 miles e of 'Skyway' along Butte Creek. Comment
  CHSC82909  Rhynchospora capitellata L. P. Janeway; B. Castro 2002-7-28 7690 Butte Northern High Sierra Nevada. Northwest side of Lumpkin Ridge Road 1.1 km southwest of junction with the road to Cascade; upper west branch of Know-Nothing Creek; 2.1 km south of top of Quartz Hill. 1231 Comment
  CHSC35214  Ribes amarum M. S. Taylor; J. Jokerst 1980-4-18 2505 Butte Ca. 1 mi s of Nimshew, ca. 1/4 mi e of Nimshew Rd. 609 Comment
  CAS-BOT-BC169094  Ribes inerme var. inerme A. A. Heller 1915-6-11 12044 Butte Jonesville in the Sierra Nevada 1676 Comment
  CAS-BOT-BC169096  Ribes inerme var. inerme F. N. Bassett 1923-6-16 s.n. Butte Jonesville Comment
  SEINET12215665  Ribes roezlii Unknown 1977-1 5 Butte ca 15 mi E of Chico, 3 mi NE of Forest Ranch & 50 yds NE of Little Chico Creek 792 Comment
  CAS-BOT-BC173953  Ribes viscosissimum A. A. Heller 1915-6-26 12032 Butte Summit of the Sierra Nevada above Jonesville 2133 Comment
  CHSC46696  Rigiopappus leptocladus R. A. Schlising; D. Ikeda, S. Morey 1986-5-24 4485 Butte S of Cohasset, along Cohasset Road. 426 Comment
  UCD135433  Rigiopappus leptocladus M. S. Taylor 1981-5-21 3770 Butte South side of Concow Road, ca. 0.5 mile south of its junction with Ponderosa Way, ca 20 air miles noth of Oroville. Comment
  CDA43069  Robinia pseudoacacia L. P. Janeway 2011-5-2 10251 Butte Sacramento Valley.; South side Feather River just east of Bedrock Park, Oroville; about 10-15 m back from the edge of the water and about 1 m higher. Comment
  CDA39482  Romulea rosea var. australis Rod Lacey 2005-3-28 s.n. Butte Thermalito; 2 blocks north of Hwy 162, between 10th Street and 12th Street. Ruderal Valley Grassland Comment
  CHSC101762  Rorippa nasturtium-aquaticum Lowell Ahart 2009-5-23 15728 Butte Opening in a drainage, 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
  UC127746  Rosa bridgesii Miss Kate Conger 1907-1 Butte Brush Creek Comment
  CDA42871  Rosa californica L. Ahart 2012-5-14 18059 Butte Just west of Table 16, south of Big Chico Creek, on the north side of the paved path. Lower Bidwell Park. Comment
  CHSC102956  Rosa californica Lowell Ahart 2009-8-3 16264 Butte Near drainage below dam, 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
  JEPS115856  Rosa californica Lowell Ahart 2009-8-3 16264 Butte Near drainage below dam, 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 239 Comment
  RSA754877  Rosa californica L. Ahart 2009-6-19 15942 Butte Open area north of pond and table, about 50 yards south of Ten Mile House Road, Upper Bidwell Park, about 3/4 air miles southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 232 Comment
  CHSC94216  Rosa gymnocarpa Lowell Ahart 2006-6-24 12856 Butte On the west side of the dirt road (Ponderosa Way), at an intersection, a gated road goes northwest, on Cohasset Ridge, about 3 3/4 miles (air) northeast of Cohasset. 1128 Comment
  JEPS117312  Rosa multiflora 2010-8-6 17042 Butte In landscaping, at Five Mile Recreation Area, Bidwell Park, Chico 74 Comment
  JEPS94699  Rosa multiflora Lowell Ahart 1998-5-2 7958 Butte about 5 air mi sw of Gridley (on s side of Evans Reimer Road, about 1/4 mi e of Pennington Road); Evans Reimer Road 21 Comment
  RSA718384  Rosa pisocarpa L. Ahart 2006-6-24 12857 Butte On the W side of the dirt road (Ponderosa Way) at an intersection, a gated road goes NW, on Cohasset Ridge, about 3.75 miles (air) NE of Cohasset. 1128 Comment
  SEINET7545148  Rosa pisocarpa subsp. ahartii B. Ertter, L. Ahart 2007-1 19074 Butte Black Bart Road 1.3 miles from lower junction with Forbestown Road, ca. 10 airmiles ESE of Oroville 655 Comment
  CHSC43211  Rosa pisocarpa subsp. pisocarpa L. P. Janeway 1987-6-26 2287 Butte At Rag Dump. At mdw edge. 1173 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
  JEPS122261  Rotala ramosior Lowell Ahart 2014-9-23 19866 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
  JEPS95941  Rotala ramosior Lowell Ahart 1999-8-13 8170 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
  UCD103091  Rotala ramosior E. M. Johnston 1915-8-1 76 J Butte Biggs. Comment
  CHSC52468  Rubus armeniacus L. P. Janeway 1987-5-28 2119 Butte Creeklet crossing Four Trees Rd 0.2 mi up from Hwy. 70. At edge of rd. 487 Comment
  CHSC23656  Rubus laciniatus M. S. Taylor 1976-4-24 1065 Butte Ca. 10 ft w of Oroville-Quincy Hwy, ca. 50 ft s of Lake Madrone, in vicinity of Berry Creek entrance to the Lake. 914 Comment
  SEINET10483580  Rubus laciniatus Heidi H. Schmidt 1993-6-15 Schmidt 861 Butte Plumas National Forest on state road 23N06 1.5 miles N of the junction with highway 70. Mixed hardwood forest. 880 Comment
  CAS-BOT-BC147204  Rubus parviflorus Lowell Ahart 1984-6-10 4695 Butte Along the road about 2 miles south-west of the Forbestown Diversion Dam, north-east of Forbestown 700 Comment
  CHSC46044  Rubus parviflorus L. P. Janeway 1987-5-28 2117 Butte Along rd from Coyote Gap 1.3 mi towards Big Bar Mtn. 1249 Comment
  CAS-BOT-BC433198  Rubus pensilvanicus Peter H. Raven 1953-5-9 5449 Butte 6.5 miles from Bangor on road to Oroville Comment
  UCD166760  Rubus praecox Marcel Rejmanek 2016-10-6 2162 b Butte By Richvale East Rd, right before the intersection with Highway 99. 35 Comment
  CHSC113309  Rubus ursinus Lowell Ahart 2014-4-16 19365 Butte On the sides but near the top of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. 29 Comment
  CHSC1604  Rubus ursinus A. Goekler 1928-3-30 Butte Bidwell Park. 60 Comment
  CHSC50800  Rudbeckia occidentalis var. occidentalis Vernon Oswald; Lowell Ahart 1990-7-31 4421 Butte Meadow at the headwaters of Concow Creek, ca. 4 mi north of Concow. 1097 Comment
  CDA34636  Rumex acetosella L. Ahart 2009-6-19 15940 Butte Open area north of a pond and table, about 50 yards south 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. Comment
  CHSC42974  Rumex acetosella Lowell Ahart 1987-7-8 5802 Butte Along Big Bar Mountain Road, about 3 miles south-west of Coyote Gap, south-east of Pulga. 1280 Comment
  RSA0035821  Rumex acetosella Lowell A. Ahart 2008-6-13 14831 Butte About 5 yards north of Oregon Gulch, about 50 yards west of the road culvert across Oregon Gulch, bottom of an old gold mined area, about 150 yards south of the cemetery, about 10 miles (air) northeast of Oroville. 305 Comment
  SEINET10970771  Rumex acetosella Mary Susan Taylor 1982-6-24 Taylor 4733 A Butte T23N R5E nw/se sec 30. Pulga SW quad. Around large landing site on saddle of ridge se of Flea Mt, n of Pulga, ca. 5 air mi e of Magalia. 3600 ft. 1097 Comment
  CAS-BOT-BC421622  Rumex crispus Lowell Ahart 1983-6-26 4124 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. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 500 Comment
  JEPS120852  Rumex fueginus Lowell Ahart 2013-6-18 18804 Butte About 60 yards W of Parking Lot 14, Gray Lodge Wildlife Management Area, about 7 air miles SW of Gridley. Comment
  CDA42867  Rumex pulcher L. Ahart 2012-5-14 18049 Butte Along the edges of the paved path, east side of the Deer Pen, between Tables 9 & 10, Lower Bidwell Park, Chico. Comment
  SD175847  Rumex salicifolius var. denticulatus D. G. Kelch 2006-8-2 06 343 Butte Along Butte Creek, north of Durham-Dayton Highway. 46 Comment
  UC600492  Rumex salicifolius var. triangulivalvis H. F. Copeland 1932-8-17 Butte Butte Creek Jonesville 1500 Comment
  CHSC45578  Sagina apetala Lowell Ahart 1975-5-11 752 Butte In a wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 39 Comment
  SEINET10537649  Sagina apetala var. barbata Mary Susan Taylor 1978-4-14 Taylor 1563 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
  CHSC29719  Sagina decumbens subsp. occidentalis J. D. Jokerst; T. B. Devine, D. Greenstein 1979-5-18 428 Butte Top of North Table Mt, ca 1.0 mi n of jct of E edge of Mt and Cherokee Rd. Around vernal pools. 381 Comment
  CHSC35033  Sagina saginoides R. A. Schlising 1981-7-19 4152 Butte E of Stirling City, on S side of Bald Mountain. 1706 Comment
  POM107311  Salix bonplandiana C. C. Bruce 1897-06 1806 Butte Little Chico. Comment
  CAS-BOT-BC102800  Salix boothii E. B. Copeland 1931-6-11 623 Butte Jonesville, Kirby's Meadow 1750 Comment
  POM219074  Salix boothii E. B. Copeland 1931-6-11 623 Butte Jonesville. Kirby's Meadow. 1750 Comment
  CAS-BOT-BC103450  Salix eastwoodiae H. F. Copeland 1931-6-11 1544 Butte Jonesville, Kirby Meadows 1828 Comment
  POM106846  Salix exigua C. C. Bruce 1897-05 1784 Butte Little Chico. Comment
  CAS-BOT-BC107964  Salix geyeriana E. B. Copeland 1931-6-10 618 Butte In meadows by Butte Creek, Jonesville 1500 Comment
  CAS-BOT-BC107966  Salix geyeriana H. F. Copeland 1920-5-21 s.n. Butte Jonesville 1219 Comment
  UC478541  Salix geyeriana E. B. Copeland 1931-6-10 618 Butte meadows by Butte Creek Jonesville (meadow below house) 1500 Comment
  RSA4403  Salix geyeriana var. argentea E. B. Copeland 1931-6-10 618 Butte Jonesville, Butte Creek. 1500 Comment
  CAS-BOT-BC107833  Salix gooddingii Gordon H. True 1971-4-8 6454 Butte Gray Lodge Wildlife Area, Valley Grassland, 7 miles southwest of Gridley 24 Comment
  HSC103912  Salix gooddingii L. Ahart 2012-4-3 17803 Butte About 12 mi. SE of Oroville; Peter Ahart Ranch: ~1.25 mi. N and 2.75 mi. E of Honcut; north bank of North Honcut Creek 39 Comment
  CAS-BOT-BC104080  Salix hindsiana A. A. Heller 1915-5-16 11870 Butte Chico-Centerville road 3 miles from Chico Comment
  CAS-BOT-BC106938  Salix laevigata M. S. Taylor; K. Tharp 1982-4-8 4295 Butte Turnout near Bridal Path sign, [across] across Feather River from spillway, along Oroville Dam Blvd, ca. 2.5 mi w of Oroville Dam Visitor Center 121 Comment
  CHSC65781  Salix lasiolepis Vernon H. Oswald 1996-4-10 7349 Butte U. S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. At the NE corner of Tract 4.2, Sanctuary 1. Sacramento River National Wildlife Refuge, Llano Seco Unit. 32 Comment
  JEPS119610  Salix lasiolepis Lowell Ahart 2012-4-9 17830 Butte West of South Rim Trail, south part of Upper Bidwell Park, about 2 miles (air) northeast of Chico. Comment
  SBBG126100  Salix lasiolepis L. Ahart 2012-6-5 18169 Butte E side of the dam, at the reservoir, N of Beatson Hollow, ca 1.75 mi NW of the iron gate on the N side of Cherokee Rd, N Table Mtn, ca 6 mi N of Oroville 298 Comment
  CAS-BOT-BC129582  Salix lasiolepis var. lasiolepis A. A. Heller 1919-4-12 13014 Butte Cherokee mine in the blue oak digger pine belt. Comment
  CAS-BOT-BC129624  Salix lasiolepis var. lasiolepis John Thomas Howell 1961-9-22 36779 Butte Jarbo Gap, Feather River Highway - Sierra Nevada 60 Comment
  UC600413  Salix lemmonii H. F. Copeland 1931-6-11 1544 Butte Kirby Meadows Jonesville; , Kirby Meadows 1828 Comment
  UC446423  Salix melanopsis E. B. Copeland 1931-6-20 Butte across Butte Creek Jonesville 1500 Comment
  CDA35057  Salpichroa origanifolia L. P. Janeway 2010-5-12 Butte Sacramento Valley; Chico; north side of Little Chico Creek 15-30 m east of Boucher Street bridge; narrow riparian strip between creek and Humboldt Road. Comment
  CHSC48297  Salsola tragus Vernon Oswald 1984-6-3 1249 Butte Sacramento River, ca. 0.5 mi downstream from the mouth of Stony Creek. Growing on a sandbar on the edge of the river. 39 Comment
  CHSC11069  Salvia sonomensis Lowell Ahart 1965-4-15 Butte Robinson Mill Road. 91 Comment
  CHSC20058  Salvia sonomensis M. S. Taylor 1975-4-25 493 Butte Along dirt road, ca. 1/2 mi e of Cohasset Hwy, ca. 10 mi n of Chico. Comment
  CHSC7039  Salvia sonomensis L. Kimbley 1969-5-4 9 Butte Ca. 300 yds ne of Chico Airport, 4 mi n of Chico. Comment
  UCR190831  Salvia sonomensis Ken Osborne 2007-5-13 s.n. Butte Sierra Nevada Foothills, along Ponderosa Way at Mud Creek, c. 1.5 mi. SE of Cohasset 701 Comment
  UC102282  Sambucus mexicana Mrs. R. M. Austin 1896-7 612 Butte Colby Comment
  SEINET10940264  Samolus parviflorus Lowell Ahart 1984-7-25 Ahart 4762 Butte Along the wet edges of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut, about 12 miles south of Oroville. Comment
  UC1562362  Sanguisorba annua Vernon Oswald and Lowell Ahart 1990-7-5 4347 Butte on n side of Humboldt Rd just w of Scout Rd. Butte Meadows (Butte Meadows) 1325 Comment
  SEINET10483279  Sanguisorba minor Lowell Ahart 1985-5-10 Ahart 4958 Butte East branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. Comment
  CHSC8623  Sanicula bipinnata D. Patten 1968-3-4 59 Butte Collected 1 1/2 mi. se of Chico along Skyway. 91 Comment
  UC73328  Sanicula bipinnata Miss M. Alice King 1905-1 Butte near College City (Sacramento Valley); Sacramento Valley Comment
  HSC23502  Sanicula bipinnatifida Judy Potter 1966-3-21 Butte Pentz Road 1 mi. E Hwy. 99E Comment
  SD122556  Sanicula bipinnatifida Lowell Ahart, Peter Ahart 1984-6-10 4715 Butte About 2 miles southwest of Forbestown Diversion Dam; northeast of Forbestown. 700 Comment
  UC566793  Sanicula bipinnatifida Herbert L. Mason 1927-5-10 3720 Butte ne of Oroville (n side of Table Mountain, Coal Creek); Table Mountain, Coal Creek Comment
  HSC32653  Sanicula bipinnatifida Patricia Datzman 1974-4-20 22 Butte Cherokee Mtn. Rd., 2 mi. S of Cherokee Comment
  CHSC42671  Sanicula tuberosa Vernon Oswald 1985-1-24 1680 Butte Upper Bidwell Park, Chico, on the north rim just e of the head of the west intermittent stream flowing into Sycamore Creek. 304 Comment
  CHSC48680  Sarcodes sanguinea Vernon Oswald 1984-6-11 1285 Butte Humboldt Road, 0.8 mi E of Cherry Hill Campground. 1524 Comment
  CAS-BOT-BC436867  Saxifraga Lowell Ahart 1975-3-3 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  CHSC1672  Saxifraga californica D. Stover 1929-3-15 Butte Bidwell Park. 91 Comment
  SEINET8244409  Saxifraga californica A. A. Heller 1914-3-19 11214 Butte Canon of Big Chico Creek. 76 Comment
  SEINET10871269  Saxifraga nidifica Lowell Ahart 1983-3-27 Ahart 3905 Butte Peter Ahart Ranch, ca. 3 mi NE of Honcut. Valley Grassland; 50 m. 50 Comment
  JEPS115833  Scandix pecten-veneris Lowell Ahart 2009-4-26 15613 Butte Upper Bidwell Park, on the west side of Highway 32, south of the parking area at the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 461 Comment
  CHSC30069  Sceptridium multifidum R. A. Schlising; R. Banchero 1980-6-6 3656 Butte N of Lake Oroville on Bald Rock Road, 0.8 mi S of its junction with Oroville-Quincy Hwy at Brush Creek. Comment
  CHSC28610  Schoenoplectus acutus var. occidentalis M. S. Taylor 1977-9-12 1539 Butte End of Upper Bidwell Park Rd, Upper Bidwell Park, Chico. 243 Comment
  CHSC38912  Schoenoplectus acutus var. occidentalis Vernon Oswald 1983-5-23 540 Butte Upper Bidwell Park, Chico, between the turn-around at the end of Upper Park Rd. and the east boundary of the park. 207 Comment
  CHSC85710  Schoenoplectus mucronatus G. F. Hrusa; T. D. Wilfred 1996-9-5 13563 Butte Butte Basin. In rice fields adjacent to Durnel Road north of Nelson Rd. [Lat./Long. on label is '39 degrees 34' N; 121 degrees 39' W']. 33 Comment
  CAS-BOT-BC111833  Schoenoplectus tabernaemontani Lowell Ahart 1987-9-24 5898 Butte Along the North Fork of the Feather River, near the Poe Power House, 271 Comment
  SEINET10467273  Scirpus congdonii Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4754 Butte Along the road, about 1 1/2 mile south-east of Bald Mountain, 1/4 mile east of Oak Point, about 5 miles north-east of Stirling City. Comment
  SEINET10905684  Scirpus setaceus Lowell Ahart, Peter Ahart 1983-6-12 Ahart 4047 Butte T20N R5E n half sec 36. Ca. 1 mi s of Crystal Hill, n of Oregon Gulch, near Lake Oroville, ca. 7 mi sw of Feather Falls. Yellow Pine Forest. Comment
  SEINET9672370  Scirpus setaceus L. Ahart 2000-6-6 8454 Butte On the bottom of an old gold mining pit, about 200 yards northwest of where the dirt road crosses Oregon Gulch Creek, about 1.4 mile north of the cemetery, about 1 1/2 miles south of Crystal Hill, about 5 miles (air) east of Oroville Dam. 305 Comment
  CHSC31740  Scribneria bolanderi L. Ahart 1978-4-27 1664 Butte Pasture fields. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC44402  Scutellaria californica Lowell Ahart 1988-6-21 6057 Butte Along Poe Power House Road, about 3/4 mile north of the Poe Power House, about 1 1/4 miles south-east of Jarbo Gap. 426 Comment
  CHSC52200  Scutellaria californica L. P. Janeway 1988-6-19 2819 Butte Ca 200 ft above Honey Run Rd, 2.6 mi from Humbug Rd; along dirt rd/ firebreak along powerline (3-wire, wooden poles). 274 Comment
  CHSC793  Scutellaria californica 1929-5-19 Butte 5 mi. above Concow on road to Flea Valley (near Stirling). 609 Comment
  HSC96904  Scutellaria californica L. Ahart 2006-6-9 12658 Butte On N side of Bardees Bar Rd., ca. 1/8 mi. NW of the poor bridge across the N Fork of the Feather River at Bardees Bar, about 2 3/4 mi. SW of Pulga 386 Comment
  RSA3813  Scutellaria siphocampyloides A. A. Heller 1927-5-30 14397 Butte Chico Creek, east of Chico. Comment
  CHSC54303  Scutellaria tuberosa Vernon H. Oswald 1991-6-3 4639 Butte Trail along Butte Creek upstream from the bridge on Doe Mill Rd (Ponderosa Way), ca. 3 mi (air) north-northeast of De Sabla. 621 Comment
  CHSC796  Scutellaria tuberosa M. Davidson 1929-3-22 Butte Near Paradise. 457 Comment
  CHSC114953  Sedella pumila Lowell Ahart 2015-3-27 19979 Butte About 400 yards southeast of Coal Canyon Falls, about 1 1/2 miles (air) northwest of the improved parking area, North Table Muntains, about 8 miles north of Oroville. 397 Comment
  UCD101997  Sedella pumila E. H. Stanford 1940-4-14 s.n. Butte Table Mountain, near Cherokee. Comment
  HSC27264  Sedella pumila J. P. Smith 1972-3-23 5096 Butte 1.6 mi. from junction with Hwy. 99 on road to Paradise Comment
  HSC32418  Sedella pumila Kitsy Kelly 1974-4-20 13 Butte 300 yds. S of the intersection of Pentz and Clark Rds. 61 Comment
  CAS-BOT-BC61496  Sedum albomarginatum M. S. Taylor 1982-6-21 4489 Butte On north side of Hwy 70 along Pulga Rd. near Pulga Bridge over Feather River. 20. miles NE of Oroville. 487 Comment
  CHSC115440  Sedum spathulifolium M. Sutton; K. Schierenbeck 2013-5-5 Butte Deer Creek. 3200 Comment
  CHSC24643  Sedum spathulifolium S. Deaton 1976-4-23 37 Butte Ca. 1 3/4 mi n of Feather Falls trail parking lot, n side of trail. 853 Comment
  CHSC38407  Sedum spathulifolium Vernon Oswald 1983-4-1 250 Butte Upper Bidwell Park, Chico, beside the South Rim Trail ca. 600 ft w of the power lines. 134 Comment
  CAS-BOT-BC63853  Sedum spathulifolium J. F. Emmel 1970-4-5 251 Butte 1/3 air mile E of Richardson Springs along Mud Creek, on S side of creek. 213 Comment
  CHSC28875  Selaginella hansenii J. D. Jokerst; M. S. Taylor 1980-2-14 42 Butte Along E side of Lumpkin Rd ca 200 m N of its jct with McCabe Cr. Comment
  CHSC7038  Selaginella hansenii Bryan C. Willingham 1969-2-23 25 Butte Ca 1/2 mi e of Big Chico Creek to s side of Hwy 32 and ca 1 1/2 mi n of Tenmile House site. 539 Comment
  CAS-BOT-BC363285  Senecio aronicoides Mrs. J. H. Morrison 1932-5-30 s.n. Butte Durham Comment
  LA204252  Senecio integerrimus var. major E. B. Copeland; 1929-7-14 498 Butte Jonesville 502 Comment
  CHSC108815  Senecio sylvaticus Lowell Ahart 2012-4-9 17832 Butte On the high east bank of Big Chico Creek, west of the rock corral, east of the cement dam in Big Chico Creek, west of South Rim Trail, south part of Upper Bidwell Park, about 2 miles (air) northeast of Chico. 110 Comment
  CHSC40490  Senecio triangularis Lowell Ahart 1985-7-9 5117 Butte Along Fall River, about 100 yards south of the bridge across Fall River, about 1/2 mile west of Lumpkin Ridge Road, about 2 1/2 miles north-east of Camp 18, about 9 miles north-east of Feather Falls. 914 Comment
  CHSC45769  Senecio triangularis Vernon Oswald 1983-6-22 740 Butte Soda Springs Campground near Calif. Hwy 32, 17.8 mi n-e of Forest Ranch. Beside Chico Creek. 1112 Comment
  CHSC27251  Sequoia sempervirens P. Moyer 1971-10-2 29 Butte CSUC Campus. On n side of L.S. Bldg. 60 Comment
  CHSC3243  Sequoia sempervirens Virginia Hagaman 1966-2-21 24 Butte Chico State College Campus. Comment
  CHSC26672  Sericocarpus oregonensis M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1502 Butte Scattered on E side of the Skyway, in Inskip. 1615 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
  CHSC40642  Setaria sphacelata Lowell Ahart 1985-10-12 5199 Butte On the sides of 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
  RSA724995  Setaria viridis L. Ahart 2006-9-11 13309 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. 432 Comment
  CHSC30872  Sherardia arvensis J. D. Jokerst 1979-4-2 1175 Butte Top of North Table Mt along the sides of Cherokee Rd at the East side of the Mt. Comment
  JEPS87673  Sherardia arvensis Lowell Ahart 1994-4-22 7287 Butte about 3.5 mi sw Forbestown (s of the intersection of Black Bart Road and Forbestown Road) 609 Comment
  SEINET10500674  Sherardia arvensis Mary Susan Taylor 1980-5-15 Taylor 2628 Butte T23N R2E ne sec 7. In and around vernal pools in Chaparral area on Cohasset Ridge, ca. 1/4 mi E of Cohasset Rd, ca. 9 mi NE of Chico. 396 Comment
  UC861927  Sibbaldia procumbens A. A. Heller 1917-7-29 12871 Butte summit above Jonesville 2133 Comment
  CAS-BOT-BC5780  Sidalcea asprella var. robusta A. A. Heller 1915-5-17 11879 Butte Along Chico Creek 5 miles E of Chico Comment
  UC725427  Sidalcea calycosa A. A. Heller 1942-5-27 16479 Butte Clark Road , Clark Road (Clear Creek Schoolhouse) Comment
  UCD116584  Sidalcea calycosa Arthur W. Dawson 1982-4-18 12 Butte 50 m south of Highway 32, 2.5 km east of U.S. 99. 75 Comment
  CHSC96335  Sidalcea gigantea L. P. Janeway 2006-8-12 8838 Butte Northern High Sierra Nevada. At Concow Road crossing of uppermost Keyser Creek 0.8 km east-northeast of Bald Mountain summit. Open disturbed area between old logging landing and creek. 1682 Comment
  CHSC52446  Sidalcea hartwegii Denise Monceau 1984-4-11 12 Butte Ca 5 mi from hwy 99; jct of Honey Run and Humbug Roads. SE side of road. 106 Comment
  POM61856  Sidalcea hartwegii A. A. Heller, H. E. Brown 1902-5-9 5512 Butte Berry Canyon (near Clear Creek) from type region Comment
  SEINET11991675  Sidalcea hartwegii M. A. Pella 1984-1 20 Butte ca 20 yds N of Cohasset Stage Rd 244 Comment
  SEINET8945015  Sidalcea hartwegii A. A. Heller, H. E. Brown 1902-5-9 5512 Butte Berry Canyon, near Clear Creek. Comment
  UC726313  Sidalcea hirsuta A. A. Heller 1927-5-3 14362 Butte ten mi n Chico; ten mi n of Chico Comment
  POM219179  Sidalcea oregana subsp. spicata H. F. Copeland 334 Butte Jonesville. 1524 Comment
  UC726097  Sidalcea oregana subsp. spicata A. A. Heller 1928-6-28 14650 Butte Butte Meadows Comment
  CAS-BOT-BC213187  Sidalcea robusta A. A. Heller 1915-5-17 11879 Butte Uplands along Chico Creek 5 miles east of Chico Comment
  CHSC25537  Sidalcea robusta Robert A. Schlising 1976-5-8 3177 Butte Bidwell Park, Chico; Upper Park above Golf Course. Comment
  CHSC76948  Sidalcea robusta Ida Ryan 1893-5-1 Butte Little Chico Creek. Comment
  UC1562447  Silene antirrhina Lowell Ahart 1990-4-28 6469 Butte in the borrow area about 1/4 mi s Feather River ( about 4/10 mi w of Pacific Heights Road, about 4 1/2 mi sw of Oroville); s of the Feather River 30 Comment
  CAS-BOT-BC384469  Silene antirrhina Lowell Ahart 1980-5-25 2343 Butte Along Ponderosa Way 500 Comment
  CHSC39045  Silene bridgesii R. A. Schlising; K. Tarp 1983-7-22 4428 Butte E part of county, se of Brush Creek along Milsap Bar Road. 975 Comment
  UC128807  Silene bridgesii Miss Kate Conger 1907-1 Butte Brush Creek Comment
  RSA477839  Silene californica M. Vincent 1962-4-16 198 Butte Pentz Road, small reservoir 1/4 mile off road 5 miles S of Paradise. Comment
  SEINET11931356  Silene californica Unknown 1978-1 18 Butte ca 4 mi SE of Concow reservoir 13.5 mi NE of Oroville. 0.7 mi S on Dark Canyon Rd. E side of road 549 Comment
  CHSC11054  Silene gallica Lowell Ahart 1966-5-7 Butte Peter Ahart Ranch, Honcut. 45 Comment
  JEPS115630  Silene gallica Lowell Ahart 2009-5-15 15690 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
  CHSC21275  Silene laciniata subsp. californica M. S. Taylor 1975-4-30 377 Butte Along both sides of Humbug Rd, ca. 19 mi e of Chico. 365 Comment
  CHSC31020  Silene laciniata subsp. californica M. S. Taylor 1980-10-6 3353 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
  CAS-BOT-BC389014  Silene laciniata subsp. californica Jeanne McFarland; Kathie Meyer; Anne Mullenniex 1995-4-9 28 Butte NW of Paradise on Honey-Run Rd, 2.5 miles down from canyon rim Comment
  CAS-BOT-BC389291  Silene lemmonii Lowell Ahart 1988-6-29 6105 Butte Along the road to the Andy Smith Ranch, about 100 yards east of Bean Creek Road, about 1 1/2 miles south-east of Little Bald Rock 914 Comment
  CHSC32665  Silene lemmonii M. S. Taylor 1981-3-24 3436 Butte S side of Hwy 70, ca. 1/2 mi w of Cresta Powerhouse, ca. 1.5 mi e of Pulga. 487 Comment
  UC478523  Silene occidentalis subsp. longistipitata E. B. Copeland 1930-7-28 635 Butte Jonesville 1550 Comment
  UC600620  Silene occidentalis subsp. longistipitata H. F. Copeland 1924-8-11 880 Butte Jonesville Comment
  CAS-BOT-BC74930  Sinapis arvensis Lowell Ahart 1974-5-5 s.n. Butte Peter Ahart Ranch, Honcut. 150 Comment
  SEINET12048536  Sisyrinchium bellum Unknown 1984-1 12 Butte 1.8 mi S of Concow Reservoir and .2 mi N of Deadwood Creek 457 Comment
  UC726126  Smilacina stellata A. A. Heller 1919-5-17 13153 Butte near Stirling; Feather River 975 Comment
  POM20568  Smilax californica Ione Poe 1923-10-2 s.n. Butte Molinos River, near Chico. Comment
  CHSC39290  Solanum americanum Lowell Ahart 1983-7-29 4228 Butte In a slide area along the dirt road, about 1/4 mile west of Milsap Bar, about 25 miles north-east of Oroville. 500 Comment
  CHSC1940  Solanum parishii V. Holt 1935-4-5 Butte Honey Run grade. 365 Comment
  CHSC36958  Solanum parishii M. S. Taylor 1982-5-2 4383 Butte Along Truex Rd, ca. 1/2 mi w of its jct with Hwy 70, ca. 5 mi n of Oroville. 365 Comment
  CHSC26455  Solanum physalifolium var. nitidibaccatum L. Ahart 1977-10-13 1600 Butte Found in the garden. Peter Ahart Ranch, Honcut. Comment
  HSC93186  Soliva sessilis L. Ahart 1995-5-30 7575 Butte About 1/8 mi. N of Cherokee Rd., N Table Mountain, about 7 mi. N of Oroville 335 Comment
  JEPS115371  Sonchus asper subsp. asper Lowell Ahart 2009-6-3 15817 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
  CHSC111368  Sonchus oleraceus Lowell Ahart 2012-5-14 18061 Butte Planted area between sidewalk and Vallombrosa Avenue, west of Manzanita Avenue, just west of the bridge across Big Chico Creek, Lower Bidwell Park, Chico. 79 Comment
  SEINET10970333  Sorbus scopulina var. cascadensis Mary Susan Taylor 1981-5-13 Taylor 3697 Butte 4500 ft. T23N R6E se sec 32, Pulga SE quad. In decomposed granite on E side of 23N15.5, ca. 1 mi S of its jct with Four Trees Rd, ca. 8 air mi E of Pulga and 0.5 mi W of Oroville-Quincy Hwy. 1372 Comment
  UCR188719  Sorghum halepense George K. Helmkamp, E. A. Helmkamp 2007-10-7 13070 Butte Northern Sacramento Valley, East Gridley Road at the west edge of the Feather River bridge 27 Comment
  UCR219097  Sorghum halepense George K. Helmkamp, E. A. Helmkamp 2009-9-5 15574 Butte Sacramento Valley, Lower Honcut Road, 0.8 mile east of its junction with CA-70, 2.5 mi. WSW (261 deg. ) of Honcut, 6.6 mi. SE (116 deg. ) of Gridley 27 Comment
  SEINET3825672  Sparganium eurycarpum Herbert L. Mason, Verne Grant 1946-8-14 13016 Butte Canal near big pond on Sacramento Outing Club Butte Sink Comment
  CDA43068  Spartium junceum L. P. Janeway 2011-5-2 10250 Butte Sacramento Valley.; South side Feather River just east of Bedrock Park, Oroville; about 10-15 m back from the edge of the water and about 1 m higher. Comment
  CHSC3747  Spartium junceum R. L. Adams 1964-4-14 57 Butte Elliot Road 1/2 mile from Skyway on E, side of road, Paradise. Comment
  SEINET10537495  Spergula arvensis Lowell Ahart 1985-5-31 Ahart 5031 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
  CHSC224  Spergula arvensis subsp. arvensis M. Anthony; L. Ahart 1963-5-15 Butte Honcut. 32 Comment
  CHSC50032  Spergula arvensis subsp. arvensis Lowell Ahart 1990-1-17 6406 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
  SEINET3450876  Spergula arvensis subsp. arvensis Unknown 2003-6-23 10307 Butte Oroville, Oroville, about 12 miles southeast, about 2 miles north and 2 miles east of Honcut, about 0.5 miles east of the Palermo Honcut highway, Peter Ahart Ranch 30 Comment
  SEINET10537503  Spergularia rubra Lowell Ahart, James D. Jokerst 1985-5-10 Ahart 4942 Butte Eastern Table Mountain area in gulchlands, about 8 miles north of Oroville. Comment
  JEPS110088  Spiraea douglasii Lowell Ahart 2006-8-15 13184 Butte East part of a large meadow with bogs, 15 yards west of Willow Creek, about 100 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  SD8399  Spiraea douglasii Daniel Cleveland 1882-7-14 Butte Sutton House Comment
  UC177584  Spiraea douglasii H. M. Hall Jul 1914 9785 Butte n Butte County 1554 Comment
  CHSC51949  Spiranthes porrifolia L. P. Janeway 1988-7-29 3107 Butte Mdw on S side of Butte Cr 1/2 mi W of Cherry Hill. 1402 Comment
  CHSC60990  Stachys ajugoides var. ajugoides Lowell Ahart 1993-6-19 6973 Butte On the west side of Hatch Road (Goodspeed Watt Road), 8 miles west of Gridley. 21 Comment
  SEINET9320865  Stachys ajugoides var. ajugoides Unknown 1996-7-9 13166 Butte Plumas National Forest Comment
  CHSC52069  Stachys ajugoides var. rigida B. Castro; L. P. Janeway, R. A. Schlising 1988-7-30 283 Butte Ca 20 ft n of road on sw-facing slope above Coon Hollow. 1926 Comment
  CHSC42938  Stachys pycnantha Lowell Ahart 1987-7-8 5791 Butte Along Walker Plains Road, about 1/2 mile east of Highway 70, near Pulga. 457 Comment
  UC392217  Stellaria borealis subsp. sitchana E. B. Copeland Jul 1929 Butte Jonesville 1500 Comment
  CAS-BOT-BC181379  Stellaria calycantha V. Oswald; L. Ahart 1988-10-6 3706 Butte Meadow near the headwaters of Big Kimshew Creek, ca. 1.5 mi (air) ne of Jones Meadow 1889 Comment
  UC1562306  Stellaria calycantha Vernon Oswald and Lowell Ahart 1990-7-19 4369 Butte ca 3 mi e Philbrook Reservoir (slope on s side of Philbrook Creek, ca 0.6 mi w of Plumas County line) 1981 Comment
  CHSC61638  Stellaria crispa Lowell Ahart 1993-9-13 7231 Butte On banks of Bolt Creek, about 1 mile south-east of Butte Meadows. 1325 Comment
  CHSC61787  Stellaria crispa Lowell Ahart 1993-10-3 7268 Butte At a spring, on the south side of the west branch of Wildcat Creek, about 2 miles north-east of Coyote Gap. 1402 Comment
  SD1574  Stellaria crispa E. B. Copeland 1931-7-18 Butte Jonesville 1500 Comment
  CHSC113349  Stellaria media Lowell Ahart 2014-5-13 19463 Butte Below the high water line of Lake Oroville, about 100 yards west of the poor parking area, about 30 yards east of McCabe Creek, about 11 miles (air) east of Oroville. 244 Comment
  JEPS114741  Stellaria media Lowell Ahart 2008-5-12 14752 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 100 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
  SEINET12558144 Image available Stellaria nitens Lowell Ahart 1983-1 3907 Butte about 1/2 mile southwest of the Forbestown Res., along the road where there is a serpentine slide area, about 4 miles north-east of Forbestown, California 450 Comment
  UCD99456  Stellaria nitens L. Ahart 1973-3-14 168 Butte Peter Ahart Ranch, Honcut. 45 Comment
  UCD99356  Stellaria pallida Michael A. Vincent; Ethan H. Freid 1998-4-6 8123 Butte Table Mountain. Comment
  CHSC50989  Stephanomeria elata Lowell Ahart 1990-8-15 6592 Butte Below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/2 mile north-west of the Enterprise Bridge across Lake Oroville. 274 Comment
  JEPS122340  Stephanomeria elata Lowell Ahart 2014-8-24 19725 Butte On the north side of the road, about 150 yards southwest of the Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. Comment
  CHSC40007  Stephanomeria lactucina Lowell Ahart 1983-8-16 4307 Butte Along the banks of a small wash, near a small mountain meadow, near Bull Hill Road, about 3 1/2 miles south of Butte Meadows. 1600 Comment
  CHSC61773  Stephanomeria virgata subsp. pleurocarpa Vernon H. Oswald 1993-8-31 5886 Butte Hwy. 70 at Cresta Rest (near the Butte-Plumas county line), along the PG and E service road to the falls on Bear Ranch Creek. On a bank near the bottom of the road. 457 Comment
  CAS-BOT-BC86981  Streptanthus diversifolius A. A. Heller 1938-4-14 15030 Butte Surface of Table Mountain. 304 Comment
  UCD163017  Streptanthus diversifolius D. O. Burge 2013-4-12 1389 Butte North Table Mountain, Campbell Creek watershed, just west of Oregon City, accessed via Cherokee Road, parking 5.8 road miles (9.3 km) south of intersection with SR 70. 400 Comment
  SEINET11991653  Streptanthus diversifolius S. M. Bryan 1974-1 2 Butte on Table Mt., ca 3 mi W of Cherokee-Oroville Rd, ca 6 mi N of Oroville 396 Comment
  CHSC62537  Streptanthus longisiliquus B. Castro; L. P. Janeway, J. Jurewicz 1993-7-6 465 Butte Ca 2.5 mi SSW of Big Bar Mtn, on N side of USFS Rd 22N84 ca 1.1 mi N and E of its jcn with major spur road (Rd 22N84A), on upper slopes of a ridge. On SE-facing road cut. 1005 Comment
  CAS-BOT-BC87426  Streptanthus polygaloides Lewis S. Rose 1963-6-2 63068 Butte 2 miles south of Pulga. North Fork of Feather River. 579 Comment
  CAS-BOT-BC87441  Streptanthus polygaloides Clarence R. Quick 1964-7-9 64 -54 Butte Sierra Nevada. North of Jarbo Gap. Comment
  CHSC39956  Streptanthus polygaloides L. Ahart; P. Ahart 1983-6-30 4178 Butte Ca. 1.5 mi ne of Concow Reservoir. NE of Oroville. Along dirt road. 550 Comment
  JEPS25036  Streptanthus polygaloides Lincoln Constance 1941-5-28 2826 Butte Magalia Sierra Nevada foothills, South Branch of the Feather River 487 Comment
  UC1176843  Streptanthus polygaloides Lewis S. Rose 1955-6-14 55094 Butte open slopes Magalia 731 Comment
  UC1492817  Streptanthus polygaloides Freed W. Hoffman 1952-6-7 4174 Butte near Magalia Railroad trestle Comment
  CAS-BOT-BC87513  Streptanthus tortuosus 1929-4-1 s.n. Butte Flower Show. 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
  UC877968  Styrax officinalis var. redivivus A. A. Heller 1915-5-25 11891 Butte ridge above Enterprise; Sierra Nevada 609 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
  CHSC27989  Symphoricarpos mollis M. S. Taylor 1978-7-18 1696 Butte On top of Humboldt Peak at Humboldt Summit. 2158 Comment
  CHSC28387  Symphyotrichum bracteolatum James D. Jokerst 1979-10-13 380 Butte Along edges of Concow Cr. Intersection of Concow Cr. and Jordan Hill Rd., 0.8 mi W of Concow Rd. Comment
  UC29849  Symphyotrichum bracteolatum H. E. Brown Nov 15 1896-Nov 30 1896 80 Butte near Clear Creek 53 Comment
  SD112376  Symphyotrichum lanceolatum subsp. hesperium Darley F. Howe 1960-9-20 2983 Butte North fork of Feather River Canyon, 8 miles from Oroville 149 Comment
  CHSC69671  Symphyotrichum spathulatum var. spathulatum Vernon H. Oswald 1987-7-16 3123 Butte West Branch of the Feather River upstream of where it crosses the road to Jones Meadow, ca. 1 mi (air) NE of Inskip. 1341 Comment
  RSA739616  Taeniatherum caput-medusae L. P. Janeway, B. Castro 2007-5-19 8979 Butte Cascade Range Foothills, Bottom of unnamed drainage on SE side of Neal Road, 2.9 air km NE of Hwy 99, under the high power lines. 91 Comment
  CHSC101276  Taraxacum officinale Lowell Ahart 2009-4-3 15522 Butte On the east side and along margins of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico. 67 Comment
  CHSC34795  Tauschia kelloggii M. S. Taylor 1980-5-8 2604 Butte Ca. 3 mi n of Forest Ranch, ca. 1 mi e of Hwy 32. 853 Comment
  CHSC20521  Tellima grandiflora M. S. Taylor 1975-4-29 545 Butte Scattered along Hwy 70, ca. 25 mi n of Oroville. Comment
  CHSC46149  Tetrapteron graciliflorum Lowell Ahart 1976-4-11 1059 Butte Along a wash, Peter Ahart Ranch, about 1 1/4 miles north and 1 1/2 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC52078  Teucrium fruticans B. Castro 1988-4-10 258 Butte At extreme e end of parking lot of Five Mile Recreation Area along s side of Big Chico Ck. 83 Comment
  CHSC3245  Thysanocarpus curvipes Virginia Hagaman 1966-3-2 10 Butte 3.2 miles north of 99E on Neal Road. 243 Comment
  JEPS119789  Thysanocarpus curvipes var. curvipes Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18014 Butte South of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  RSA0039380  Thysanocarpus curvipes var. curvipes Herbert F. Copeland 1928-4-3 333 Butte Canyon of Butte Creek. Comment
  UC857581  Thysanocarpus radians A. A. Heller 1916-3-18 12281 Butte 8 mi n Oroville Comment
  CHSC6023  Tilia heterophylla M. MacArthur 1968-6-19 257 Butte SE side of Auditorium bld., Chico State College. 60 Comment
  RSA190691  Torilis arvensis T. C. Fuller 1967-6-27 16033 Butte N side of Durham Hwy., 1.1 mi. W of Hwy 99, 0.2 mi E of Hamlin Rd., Durham Comment
  CHSC3897  Torreya californica Don Heinz 1967-2-12 Butte 2 mi. E of Jarbo Gap, Feather R. Canyon, Hwy. 70. 670 Comment
  CHSC39294  Torreya californica Lowell Ahart 1983-7-29 65 Butte 2 miles east of Milsap Bar. About 25 miles north-east of Oroville. 1000 Comment
  CHSC86846  Torreya californica L. P. Janeway; Gavin Blosser 2003-8-27 7971 Butte Northern High Sierra Nevada. Southeast side of South Fork Feather River arm of Lake Oroville; 2.2 km (air) east-northeast of Enterprise Bridge. 285 Comment