Search Results — 2000 specimen records retrieved (1637 records with coordinates)
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  SEINET10479965  Abutilon theophrasti Mary Susan Taylor 1978-9-8 Taylor 1905 Butte Around rice fields, ca. 6 mi N of Chico. 61 Comment
  UC1171590  Acer circinatum R. Bacigalupi 1934-9-2 2326 Butte along Chico-Butte Meadows Road 10 mi sw Butte Meadows (Canyon of W Fork of Campbell Creek); Lassen National Forest, Chico Quad., W Fork Campbell Cr Comment
  CHSC46803  Acer glabrum var. torreyi R. A. Schlising; L. Janeway 1988-7-1 4554 Butte NE part of county, NE of Snow Mountain; Comment
  CAS-BOT-BC331605  Acer macrophyllum A. A. Heller 1914-3-19 11213 Butte Canon of Big Chico creek along the stream. Comment
  CHSC93  Acer macrophyllum V. Holt 1948-4-14 Butte Cohasset road 10 mi. past Richardson Springs turnoff. 487 Comment
  CHSC107075  Acer negundo V. Lockie; M. S. Williams 2010-3-23 Butte Chico State University Campus. Specimen found within 50' of Big Chico Creek, south of Holt Hall. 60 Comment
  CAS-BOT-BC21704  Achillea millefolium A. A. Heller 1917-7-26 s.n. Butte Butte Meadows 1402 Comment
  UCD128453  Achillea millefolium J. Travis Rubke 1977-4-25 120 Butte around 13 km east of Chico, north of skyway. 600 Comment
  JEPS108542  Achnatherum lemmonii L. P. Janeway 2006-5-28 8638 Butte Northern High Sierra Nevada. Open serpentine bowl on west side of Concow Road about 3.2 mi northeast of the upper end of Concow Reservoir 856 Comment
  UCD50598  Achnatherum lemmonii Elizabeth Wilson 1940-6-21 s.n. Butte Butte County, near De Sabla, California. Comment
  CDA13731  Achnatherum occidentale subsp. pubescens G. F. Hrusa, T. D. Wilfred 1997-6-27 13909 Butte Sierra Nevada; Feather Falls/Cascade Rd. to USFS 21N22Y, 1 km. E to summit. Slopes densely forested with rare granite rock outcrops & gravelly open areas. Small colony in sandy-gravelly opening. Perennial, bunching. Comment
  JEPS110267  Achnatherum stillmanii Lowell Ahart 2006-6-24 12852 Butte On the east side of the dirt road (Ponderosa Way), on Cohasset Ridge, about 3 1/2 miles (air) northeast of Cohasset 1130 Comment
  CHSC31565  Achyrachaena mollis L. Ahart 1976-4-14 1064 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC204850  Acmispon argophyllus var. fremontii Lowell Ahart 1983-7-29 4256 Butte About 3 miles east of Milsap Bar, about 25 miles north-east of Oroville 1100 Comment
  CHSC48512  Acmispon argophyllus var. fremontii Vernon Oswald 1985-5-28 1785 Butte Little Bald Rock near Bean Creek Rd. 0.3 mi e of Bald Rock Rd. 1011 Comment
  CHSC26793  Acmispon brachycarpus M. S. Taylor 1978-5-6 1571 Butte By RR tracks, Magalia. 609 Comment
  CHSC31097  Acmispon brachycarpus Diane M. Reilly 1980-4-19 19 Butte Ca. 2 m n off Big Bend Rd. on Pulga Rd, ca. 3 m off Hwy 70 ca. 25 mi e of Chico. 597 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
  CHSC38503  Acmispon wrangelianus Vernon Oswald 1983-4-25 384 Butte Upper Bidwell Park, Chico, on the north rim ca. 1.5 mi e of the power lines. 353 Comment
  CHSC11816  Aconitum columbianum E. B. Copeland 1929-7-22 363 Butte Jonesville. 1500 Comment
  CHSC39124  Aconogonon phytolaccifolium R. A. Schlising 1983-7-24 4341 Butte E of Stirling City, at creek in Breakneck Canyon. 1417 Comment
  CHSC23705  Adenocaulon bicolor M. S. Taylor 1976-5-5 1120 Butte Scattered ca. 4 ft N of Bear Creek and the waterfall, ca. 1/4 mi S of Hwy 70, ca. 30 mi NE of Oroville. Comment
  CHSC38244  Adiantum aleuticum Vernon Oswald 1983-6-17 702 Butte Upper Bidwell Park, Chico, on the s side of Chico Creek ca. 200 ft w of Day Camp. 91 Comment
  CAS-BOT-BC65618  Adiantum jordanii Lowell Ahart 1983-7-29 4236 Butte about 1/2 mile east of Milsap Bar, about 25 miles north-east of Oroville 500 Comment
  CAS-BOT-BC65620  Adiantum jordanii Saichi Kawahara 1968-5-4 368 Butte James Ripley's property, Graham Road, Paradise 640 Comment
  CHSC23472  Adiantum jordanii T. D. Brumley 1974-5-2 4 Butte On s side of Chico creek ca. 400 yds s of Municipal Golf Course building, Chico. 152 Comment
  UCD137231  Adiantum jordanii G. M. Trimble 1974-4-28 sc- 17 Butte 300 yards W. of Covered Bridge; ca. 100 yards above the river. 266 Comment
  CHSC97342  Aegilops triuncialis L. P. Janeway 2007-6-11 9037 Butte Northern High Sierra Nevada. Plumas National Forest; along Road 20N67 1.1 km northwest of Lumpkin Road, 2.6 km west of Feather Falls town site. 757 Comment
  CAS-BOT-BC202595  Aesculus californica Lowell Ahart 1979-6-2 s.n. Butte On N. Honcut Creek bank. Peter Ahart Ranch. Honcut 50 Comment
  CHSC11373  Aesculus californica Lowell Ahart 1970-5-12 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC38456  Aesculus californica Vernon Oswald 1983-5-21 519 Butte Upper Bidwell Park, Chico, on the north rim 3400 ft e of the power lines. 292 Comment
  CHSC52342  Aesculus californica Pauleen Broyles 1987-5-21 1055 Butte The Nature Conservancy Vina Plains Preserve. Wurlitzer Addition. Scattered along banks of Singer and Pine Creeks. Comment
  CHSC77486  Aesculus californica Anna Pinsky 1997-4-24 17 Butte Chico, Upper Bidwell Park, Salmon Hole, 100 ft. above Big Chico Creek, on grassy hill between large rock outcrops. Comment
  CHSC99665  Aesculus californica H. Koeth; H. Jansen 2007-5-2 Butte Big Chico Creek Ecological Reserve, Chico (Forest Ranch). UTM10 610006E 4406721N. 471 Comment
  SEINET12290260  Agastache parvifolia Unknown 1967-1 584 Butte Chico, on the Rd to Eagle Lake Biology Station and Willow Creek 1585 Comment
  CAS-BOT-BC13174  Agoseris monticola V. Oswald; L. Ahart 1988-10-6 3707 Butte Near the headwaters of Big Kimshew Creek, ca. 1.5 air miles NE of Jones Meadow 1950 Comment
  CHSC87538  Agoseris retrorsa R. D. Fischer 2004-4-20 133 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located along Humboldt Trail, approx. midway. 411 Comment
  SEINET10475109  Agoseris retrorsa Mary Susan Taylor 1980-5-27 Taylor 2724 Butte N side of Oroville-Quincy Hwy, ca. 2 mi S of Lake Madrone. 610 Comment
  CAS-BOT-BC447799  Agrimonia gryposepala Lowell Ahart 1980-7-29 2504 Butte Near Forbestown Road, 228 Comment
  SEINET10507052  Agropyron elongatum Mary Susan Taylor 1978-9-9 Taylor 1922 Butte Along the Skyway in the village of Inskip. 1468 Comment
  CHSC116597  Agrostis capillaris L. P. Janeway 2015-6-30 11791 Butte Northern High Sierra Nevada. Plumas National Forest; along road 19N19 1.3 road-km east of Ponderosa Way; north-northwest slopes halfway between Sunset Hill and Ponderosa Dam (South Fork Feather River). 701 Comment
  CAS-BOT-BC127445  Agrostis elliottiana Lowell Ahart 1983-6-26 4166 Butte Near Bean Creek Road, about 0.25 mile south of Little Bald Rock, about 20 miles northeast of Oroville. 1000 Comment
  JEPS107757  Agrostis elliottiana Lowell Ahart 2005-5-11 11800 Butte On the bottom of a small vernal pool, south part of North Table Mountain, about 300 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 354 Comment
  JEPS98703  Agrostis elliottiana Lowell Ahart 2000-5-16 8358 Butte 5 air miles SW of Oroville (Thermalito Afterbay, S and N side of access road to boat ramp, W of Larkin Road, 1 1/4 mi S of Oroville Airport) 42 Comment
  CAS-BOT-BC127371  Agrostis exarata Lowell Ahart 1977-6-16 s.n. Butte Peter Ahart Ranch, Honcut. Near North Honcut Creek. 50 Comment
  CHSC112058  Agrostis exarata B. Castro 2012-10-18 1991 Butte Sacramento Valley. At N end of Chico, just S of the Chico Air-port, along Sycamore Creek, ca 900 ft downstream (W) of its crossing under the Cohasset Hwy bridge. 54 Comment
  CAS-BOT-BC139720  Agrostis gigantea Lowell Ahart 1985-11-7 5235 Butte Below the high water line of Lake Oroville, on the bottom of the South Fork of the Feather River, about 300 yards northwest of the Ponderosa Dam. 277 Comment
  POM183177  Agrostis idahoensis H. F. Copeland 1930-7-25 1340 Butte Jonesville. 1524 Comment
  RSA129604  Agrostis idahoensis H. S. Yates 1936-8-13 6106 Butte Paynes Creek; 2.5 miles S.S.E. of Butte Meadow 1494 Comment
  CHSC26663  Agrostis stolonifera M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1493 Butte On n side of John Rd, ca. 4.8 mi s of its jct with Old Humboldt Rd, above Jonesville. 1981 Comment
  UCD53711  Agrostis variabilis A. A. Heller 1914-8-7 11660 Butte Locally abundant at the summit east of Jonesville. The type was collected in the Yellowstone Park. 2133 Comment
  SEINET10936190  Ailanthus altissima Lowell Ahart, Peter Ahart 1983-7-24 Ahart 4208 Butte T20N R7E ne sec 32. At the Forbestown Reservoir, ca. 5 mi ne of Forbestown. Yellow Pine Forest; 450 m. 450 Comment
  CHSC49503  Aira elegans Vernon Oswald 1986-4-20 1972 Butte Peter Ahart Ranch near Honcut. In the 'home pasture. 32 Comment
  CHSC61339  Alisma lanceolatum Lowell Ahart 1993-7-13 7066 Butte On the bottom of a deep wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  JEPS104027  Alisma plantago-aquatica Lowell Ahart 2003-6-23 10304 Butte In a rice field, Peter Ahart Ranch, ca 300 yd e of the Palermo Honcut Highway, ca 2 1/8 mi n of Honcut, ca 12 mi south of Oroville. 30 Comment
  CHSC49471  Allium amplectens Vernon Oswald 1988-6-13 3375 Butte Honey Run Rd. 0.7 mi sw of the Skyway, Paradise. 426 Comment
  CAS-BOT-BC460375  Allium amplectens C. C., Mrs. Bruce 1897-5-1 1898 Butte Fields near Chico Comment
  CAS-BOT-BC460737  Allium amplectens Lowell Ahart 1980-6-19 2384 Butte Along Swedes Flat Road, near Bangor. Comment
  CAS-BOT-BC460741  Allium amplectens A. A. Heller; H. E. Brown 1902-5-7 5480 Butte Berry Canyon (Near Clear Creek) Comment
  POM219305  Allium campanulatum H. F. Copeland 1931-6-9 1511 Butte Jonesville. Comment
  UC725433  Allium campanulatum A. A. Heller 1938-5-28 15113 Butte 22 mi from Oroville (along the Feather River Highway e side of Jarboe Pass); Feather River Highway, Jarboe Pass 609 Comment
  CAS-BOT-BC465446  Allium campanulatum H. F. Copeland 1920-5-22 s.n. Butte Jonesville 1219 Comment
  SEINET10472035  Allium campanulatum Mary Susan Taylor 1980-5-24 Taylor 2744 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC135815  Allium jepsonii Clarence R. Quick 1964-7-9 64 -65 Butte North of Jarbo Gap - Sierra Nevada Comment
  CHSC102188  Allium jepsonii George W. Hartwell 2009-6-30 Butte Concow Road, 3-4 miles above Concow Reservoir on a serpentine ridge and adjacent steep, rocky hillsides burned by summer wildfire in 2008. 858 Comment
  CHSC74028  Allium jepsonii E. Hubert 1997-7-23 Butte Ca 7 air mi NW of Brush Ck, 0.5 mi E of Hungry Hunt Peak, 50 ft W of USFS Rd 23N28. 1103 Comment
  CAS-BOT-BC472968  Allium membranaceum Lowell Ahart 1980-5-25 2342 Butte Along Ponderosa Way Comment
  CAS-BOT-BC132069  Allium peninsulare var. peninsulare Mrs. J. H. Morrison 1932-5-1 s.n. Butte Durham Comment
  CHSC44408  Allophyllum divaricatum Lowell Ahart 1988-7-3 6117 Butte Along the road gutter, along the road to the generator at Ponderosa Reservoir, about 1 mile east of the Ponderosa Dam. 457 Comment
  UC1586630  Allophyllum divaricatum Lowell Ahart 1991-6-22 6662 Butte n. of Springtown Rd. Lake Oroville 243 Comment
  CAS-BOT-BC170915  Alnus rhombifolia A. A. Heller 1914-2-2 11167 Butte Canon [canyon] of Bog Chico creek E of Chico Comment
  CHSC43172  Alopecurus aequalis Robert Banchero 1981-8-6 636 Butte Ca 3 air mi se of Jonesvill. 1853 Comment
  CHSC49506  Alopecurus carolinianus Vernon Oswald 1988-4-13 3271 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. 53 Comment
  CHSC28733  Amaranthus albus R. Schlising 1979-10-7 3496 Butte 0.9 mi s of Chico along Dayton Road. Comment
  CHSC31519  Amaranthus albus L. Ahart 1974-6-3 471 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC42941  Amaranthus albus Lowell Ahart 1987-7-17 5835 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
  UC204582  Amaranthus albus A. A. Heller 1914-7-20 11579 Butte 8 mi n Oroville Comment
  CHSC51347  Amaranthus powellii Vernon Oswald 1990-9-22 4453 Butte Growing in median along the Esplanade between 10th and 11th avenues. 59 Comment
  CHSC21137  Amaranthus retroflexus M. S. Taylor 1975-10-3 930 Butte Along slough near bridge over river rd, ca. 10 mi w of Chico. 36 Comment
  RSA713019  Amaranthus retroflexus L. Ahart 2005-11-13 12490 Butte Peter Ahart Ranch, about 1 1/2 miles north and about 1 mile east of Honcut, about 12 miles south of Oroville 31 Comment
  CHSC76411  Ambrosia artemisiifolia Lowell Ahart 1999-10-28 8317 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
  CHSC32141  Ambrosia psilostachya Lowell Ahart 1973-11-1 289 Butte On dry deep rich soil, Peter Ahart Ranch, Honcut. 45 Comment
  JEPS117527  Ambrosia psilostachya Lowell Ahart 2010-9-13 17152 Butte Open dry areas, Oroville Wildlife Area, about 1/2 mile west of Pacific Heights Road, about 3 1/2 miles (air) northwest of Palermo 31 Comment
  RSA769808  Ambrosia psilostachya L. Ahart, John Dittes, Josephine Guardino 2008-11-8 15438 Butte South bank of Lindo Channel, about 50-100 yards west of the diversion structure, north of Hooker Oak, Upper Bidwell Park, Chico 69 Comment
  CHSC27965  Amelanchier pallida M. S. Taylor 1978-7-19 1746 Butte Cherry Hill Campground, on s side of Old Humboldt Rd, ca. 2 mi sw of Jonesville. 1889 Comment
  JEPS110076  Ammannia robusta Lowell Ahart 2006-8-5 13085 Butte On the bottom of a large wash, Peter Ahart Ranch, about 1 1/2 miles north and 300 yards east of Honcut, about 12 miles south of Oroville 30 Comment
  CHSC136  Amsinckia eastwoodiae E. Canfield 1904-4-9 Butte Hooker Oak field. 76 Comment
  CHSC3188  Amsinckia intermedia Dona Kingsford 1966-3-3 Butte 1.3 miles south west of Hooker Oak Tree in a dry open field, Chico. Comment
  SEINET12326796  Amsinckia intermedia M. S. Taylor, Tharp, K. 1983-1 5240 Butte along small road off Stillson Canyon Rd, ca 3 mi SSE of Chico 152 Comment
  UC614660  Amsinckia intermedia L. Constance, J. L. Morrison 1938-4-30 2178 Butte 8 mi n Chico (between Big and Little Chico Creeks); Sierra Nevada foothills 609 Comment
  CHSC83913  Amsinckia lycopsoides Lowell Ahart 2003-4-10 10064 Butte On the east rim of South Table Mountain, about 2 1/2 miles (air) north of Oroville. 332 Comment
  CHSC37419  Amsinckia menziesii var. menziesii R. Cushman 1972-5-5 10 Butte West side of Chico State campus along the railroad tracks adjacent to tennis courts. 64 Comment
  CAS-BOT-BC26968  Amsinckia verna Amos Arthur Heller 1914-4-21 11310 Butte Chico Comment
  SEINET10940260  Anagallis arvensis Mary Susan Taylor 1982-4-28 Taylor 4362 Butte T17N R1E se/sw sec 13. Pennington qud. Graylodge Wildlife Refuge, n side of Rutherford Rd, ca. 1/2 mi w ofits jct with Pennington Rd, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  CHSC42004  Anaphalis margaritacea Lowell Ahart 1975-9-4 972 Butte Along the South Fork of the Feather River, about 1/2 mile north of Golden Trout Crossing, about 15 miles north of Feather Falls. 762 Comment
  CHSC98905  Andropogon virginicus var. virginicus L. P. Janeway 2007-12-17 9225 Butte Northern Sierra Nevada Foothills. Along the east edge of Thermalito Diversion Pool (the bed of the Feather River pooled at a constant 68m elevation level), about 370 m north the railroad bridge. 69 Comment
  CHSC43624  Anisocarpus madioides Vernon Oswald 1985-5-20 1771 Butte Forbestown Rd. 0.5 mi ne of Robinson Mill Rd. Along the edge of the road. 853 Comment
  CHSC6060  Anisocarpus madioides E. Parreno 1968-5-13 107 Butte Roadside of Upper Bidwell Rd. ca. 25 m from Devil's Kitchen. Comment
  CHSC86584  Anisocarpus madioides L. P. Janeway; John Hunt 2003-6-13 7828 Butte Northern High Sierra Nevada. North side of South Fork Feather River arm of Lake Oroville, 515 m west-northwest of the north end of Enterprise Bridge. 277 Comment
  CAS-BOT-BC84695  Anthemis cotula A. A. Heller 1914-7-18 11479 Butte Near Durham Comment
  CHSC78357  Anthoxanthum odoratum Lowell Ahart 2000-6-29 8539 Butte On the northwest side of Concow Road at Flea meadow, about 1/2 mile west of Flea Mountain, about 3 1/2 miles (air) north of Concow Reservoir, about 5 miles (air) east of Magalia. 1036 Comment
  CHSC20056  Anthriscus caucalis M. S. Taylor 1975-4-25 497 Butte Abundant along dirt rd, ca. 1/4 mi e of Cohasset Rd, ca. 10 mi ne of Chico. Comment
  CHSC98662  Antirrhinum cornutum B. Castro; L. P. Janeway 2005-8-3 1511 Butte Ca 20 air mi NNE of Oroville and 1.2 mi S of Flea Mtn, along Concow Rd ca 0.1 mi N of its jcn with Rim Rd. Along narrow path under power lines just W of Concow Rd, in small openings. 1002 Comment
  CHSC42213  Aphanes occidentalis L. P. Janeway; C. A. Janeway 1987-3-7 1953 Butte In Bidwell Park, Chico. Along North Rim Tr north-west of Horseshoe Lake. 144 Comment
  CHSC34076  Aphyllon epigalium subsp. epigalium M. S. Taylor 1981-5-29 3814 Butte Chico Ridge, ca. 0.5 mi n of 22N31, ca. 3 air mi se of Pulga. 853 Comment
  CHSC111362  Aphyllon purpureum Lowell Ahart 2012-5-4 17987 Butte On damp dark rocky soil, on and around basalt on a steep slope, about 200 feet south of stream in Beatson Hollow, about 1 1/4 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 286 Comment
  CHSC115363  Aphyllon purpureum Lowell Ahart 2015-3-14 19955 Butte On steep basalt slope, on the south side 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 7 miles (air) north of Oroville. 302 Comment
  CHSC1170  Aphyllon purpureum V. Holt 1935-3-27 Butte Salmon Hole, Chico Creek. 152 Comment
  RSA253211  Apocynum androsaemifolium subsp. pumilum A. A. Heller 1938-7-20 s.n. Butte High ridge betw Inskip and chaparral. 1524 Comment
  CHSC50641  Apocynum cannabinum Lowell Ahart 1990-6-16 6514 Butte A small ravine, below the high water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 259 Comment
  POM75790  Apocynum cannabinum C. C. Bruce 1897-06 s.n. Butte Little Chico Comment
  CHSC27919  Aquilegia formosa var. truncata M. S. Taylor 1978-7-18 1718 Butte On top of Humboldt Peak at Humboldt Summit, on Butte Co and Tehama Co line. 2158 Comment
  CHSC36160  Aquilegia formosa var. truncata K. Bridwell 1978-5-31 132 Butte Ca. 10 ft E of Coutolenc Rd, ca. 5 mi N of intersection with Skyway, ca. 8 mi NE of Magalia. 853 Comment
  CHSC26688  Arceuthobium abietinum M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1486 Butte At Humboldt Summit at Butte-Tehama county line, ca. 100 ft. w of Old Humboldt Rd, on Butte side. 2133 Comment
  RSA774127  Arceuthobium abietinum L. Ahart 2010-9-21 17197 Butte On the west side of the County Road about 1/4 mile north of Jones Meadow, about 2.5 miles (air) southeast of Philbrook Reservoir. 1912 Comment
  CHSC108749  Arceuthobium campylopodum B. Castro; L. P. Janeway 2002-7-7 1378 Butte High Cascade Range. Along logging spur road, 2.1 mi NE of Bald Mountain Lookout and 0.6 mi SW of Jones Meadow. 1798 Comment
  HSC73008  Arceuthobium campylopodum M. S. Taylor, L. Ahart 1981-8-15 4185 Butte N end of Snag Lake, E side of Humbug Rd., 14 mi. NE of Stirling City 1738 Comment
  JEPS103529  Arceuthobium campylopodum Lowell Ahart 2002-6-21 9753 Butte On the S side of a poor dirt road, Watson Ridge, ca 2 miles (air) NE of Bald Rock Dome, ca 5 miles (air) N of Feather Falls (the town). 1095 Comment
  SD1140  Arceuthobium campylopodum E. B. Copeland 1930-7-28 414 Butte Jonesville 1550 Comment
  NY8240  Arctostaphylos laxiflora A. A. Heller 1940-2-6 15493 Butte Wagstaff Road near the Neal Road, Paradise. Transition Life Zone. Comment
  CAS-BOT-BC24439  Arctostaphylos manzanita Walter Knight; Irja Knight; Tiffany Knight 1988-7-24 6300 Butte On Pentz Rd. near Kunkle Reservoir. Comment
  RSA632986  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27448 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  CHSC3616  Arctostaphylos manzanita subsp. manzanita John Francis 1966-2-15 9 Butte 4 miles E of Chico on Hwy 32. Comment
  OBI69253  Arctostaphylos manzanita subsp. manzanita Kari Fisher, Bill Fisher 2000-11-11 57 Butte Bidwell Park, along Chico Creek, close to golf course. 84 Comment
  UC195402  Arctostaphylos manzanita subsp. manzanita A. A. Heller 1914-1-10 11152 Butte e Chico; canyon of Big Chico Creek Comment
  UC725751  Arctostaphylos manzanita subsp. manzanita A. A. Heller 1941-12-17 16338 Butte Neal Rd 3 mi below Paradise Comment
  CAS-BOT-BC24299  Arctostaphylos mewukka A. A. Heller 1928-2-27 14477 Butte Near Forest Ranch Comment
  UC725305  Arctostaphylos mewukka A. A. Heller 1940-2-6 15491 Butte Neal Rd at Game Refuge above Bowle's Mansion; Paradise Comment
  JEPS115159  Arctostaphylos mewukka subsp. mewukka Lowell Ahart 2009-11-19 16563 Butte On the south side of Ten Mile House Road, 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 369 Comment
  CHSC48372  Arctostaphylos nevadensis Vernon Oswald 1983-8-17 994 Butte On Humboldt Peak, NE of Jonesville. 2158 Comment
  CHSC99887  Arctostaphylos nevadensis James I. Mallory 1969-10-2 362 Butte 1 mile east of Quartz Hill, 1 mile south of Fall River Campground in abandoned logging road. Just north of the center of the section. 1127 Comment
  SD3597  Arctostaphylos nevadensis E. B. Copeland 1931-6-22 Butte Jonesville, on ridge east of the Summit. 2100 Comment
  UCD53437  Arctostaphylos patula J. I. Mallory 1970-8-20 376 Butte 3/4 mile north of Ramsey Bar; ca. 10 miles northeast of Stirling City. 1432 Comment
  SEINET11987499  Arctostaphylos truei Unknown 1981-1 s.n. Butte 3 mi NE of Magalia Comment
  CAS-BOT-BC47381  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51092 Butte about 2 miles from Paradise on Skyway to Chico 396 Comment
  CHSC40335  Arctostaphylos viscida subsp. viscida Lowell Ahart 1985-2-17 4841 Butte Found growing on red rocky damp soil near Kunkle Res., about 2 miles south of Paradise. 167 Comment
  CHSC57370  Arctostaphylos viscida subsp. viscida Patrick Cooley 1990-4-1 3 Butte Jct. Skyway and Coutolenc Rd. ca. 1 1/2 mi. N of Paradise. 701 Comment
  JEPS104594  Aristida dichotoma Lowell Ahart 2003-7-30 10461 Butte On the n side of Bean Creek Rd, ca 1/2 mi se of Little Bald Rock, ca 2 1/2 mi (air) se of Brush Creek. 1000 Comment
  CAS-BOT-BC137557  Aristida oligantha John Thomas Howell 1961-9-22 36762 Butte Sierra Nevada. North Fork of Feather River, 10 miles from Oroville. Comment
  CHSC52364  Aristida ternipes var. hamulosa J. D. Jokerst 1985-11-6 2590 Butte South of the unnamed creed (unnamed canyon is first one south of Big Chico Creek, due east of Chico, future site of Canyon Oaks development). 121 Comment
  CDA22410  Aristolochia californica Roger Raiche 1982-10-9 20769 Butte Middle Fork Feather RIver, path to Feather Falls. Comment
  CHSC10548  Aristolochia californica Lowell Ahart 1966-3-15 Butte Peter Ahart Ranch, Honcut. 42 Comment
  CHSC38262  Aristolochia californica Vernon Oswald 1983-3-4 107 Butte Upper Bidwell Park. Brush beside Upper Park Rd. at the power lines. 97 Comment
  UCD137808  Aristolochia californica L. Ahart 1974-3-8 310 Butte Peter Ahart Ranch, Honcut. 45 Comment
  RSA4245  Arnica dealbata E. B. Copeland 1929-7-18 399 Butte Jonesville 1550 Comment
  UC84122  Arnica dealbata R. M. Austin July 1896 790 Butte Colby Comment
  CHSC45628  Arnica discoidea Vernon H. Oswald 1987-7-16 3129 Butte West Branch of Feather River where it crosses the road to Jones Meadow, ca. 1 mi (air) NE of Inskip. 1341 Comment
  CHSC45634  Artemisia douglasiana Vernon Oswald 1985-8-4 1923 Butte Scotts John Rd. 2.7 mi N of Humboldt-Humbug connector road. 1920 Comment
  UC1563294  Artemisia douglasiana Lowell Ahart 1990-10-3 6625 Butte 1/4 mi e Canyon Creek Bridge across Lake Oroville; Lake Oroville, East Fork Canyon Creek 259 Comment
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Mar 31 2009
  UC726606  Artemisia douglasiana A. A. Heller 1916-9-23 12661 Butte near Forest Ranch; Sierra foothills Comment
  CHSC94100  Asarum hartwegii Lowell Ahart 2006-7-11 12941 Butte About 50 yards south of Humboldt Road, about 1 1/2 miles (air) southwest of Butte Meadows. 1435 Comment
  CHSC36078  Asarum lemmonii R. A. Schlising 1982-6-10 4291 Butte N of Paradise and Magalia at old Powellton site; along Kanaka Creek. 1097 Comment
  HSC73112  Asarum lemmonii M. S. Taylor 1981-5-7 3648 Butte Crossing 20N15 Lumpkin Ridge Rd., 1.9 mi. W of Golden Trout Crossing on S Fork Feather River 5 air mi. E of Feather Falls 1098 Comment
  CHSC31549  Asclepias fascicularis L. Ahart 1978-9-10 1805 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC68881  Aspidotis californica Judy Wheeler 1980-3-19 6 Butte Ca. 16.5 mi. E of Oroville on S side of Lumpkin Rd, 150 yd upstream on McCabe Creek 384 Comment
  OBI74995  Aspidotis densa Hannah M. Fugle 2011-1-17 5 Butte Magalia, ca. 400 ft E of Coutelenc Rd, ca. 0.1 mi up Coutelenc rd from Skyway Rd 762 Comment
  CAS-BOT-BC178458  Astragalus gambelianus Ira L. Wiggins 1925-3-22 1463 Butte Chico Creek Canyon about five miles above Chico Comment
  CHSC54383  Astragalus pauperculus M. Bailey 1991-3-15 552 Butte Butte College campus, ca 700 ft n of Pentz Road, on the eastern and southern ridges of knoll south of the Fire Training area. Near fence line. 109 Comment
  CHSC27997  Asyneuma prenanthoides M. S. Taylor 1978-7-18 1673 Butte On w side of Hwy 32, ca. 1/4 mi n of Forest Ranch. 718 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
  CHSC42895  Asyneuma prenanthoides L. P. Janeway 1984-7-15 924 Butte Just W of Rogers Cow Camp. 1249 Comment
  CAS-BOT-BC66022  Athyrium filix-femina var. cyclosorum H. F. Copeland 1920-8-2 199 Butte by Butte Creek 1676 Comment
  UCSB63847  Athyrium filix-femina var. cyclosorum Ahart, Lowell 1997-8-1 Butte On the east side of Little Kimshew Creek, where the basalt is eight sided, Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City; T25N, R5E, Section 33 1524 Comment
  JEPS119554  Athysanus pusillus Lowell Ahart 2012-2-22 17748 Butte About 5/8 mile west of Highway 32, about 8 3/4 miles (air) northeast of Chico. Comment
  CHSC46869  Atriplex heterosperma Vernon Oswald 1989-9-6 3988 Butte Gray Lodge Wildlife Area just w of Parking Area 2. 19 Comment
  CHSC108796  Aucuba japonica Lowell Ahart 2012-4-6 17807 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, city of Chico. 60 Comment
  CHSC9341  Avena barbata B. Anthony 1968-3-29 414 Butte Chico State College Campus, Chico. Comment
  SEINET10517561  Avena barbata Lowell Ahart 1974-4-24 Ahart 433 Butte Along North Honcut Creek on moist sandy soil. Peter Ahart Ranch, Honcut. Foothill Woodland. 150 Comment
  CHSC44628  Azolla filiculoides Vernon Oswald 1987-5-20 2913 Butte Butte Creek Canyon Ecological Reserve on the s side of Butte Creek, ne of the Skyway. 80 Comment
  JEPS116119  Azolla filiculoides Lowell Ahart 2009-10-8 16412 Butte In a deep large ditch, on the east side of the road, about 20 yards east of Parking Lot 13, Gray Lodge Waterfowl Management Area, about 7 miles (air) southwest of Gridley 19 Comment
  CAS-BOT-BC98761  Baccharis douglasii Lowell Ahart 1985-10-12 5196 Butte On dry soil, near the east side of Kunkle Reservoir, about 2 miles south of Paradise 502 Comment
  CHSC97721  Baccharis pilularis Lowell Ahart 2007-10-30 14508 Butte Both sides of the water ditch, north side of Lower Wyandotte Road, about 2 1/2 miles (air) northeast of Palermo, about 4 1/4 miles (air) southeast of Oroville. 129 Comment
  JEPS115039  Baccharis pilularis Lowell Ahart 2007-10-30 14508 Butte Both sides of the water ditch, north side of Lower Wyandotte Road, about 2 1/2 miles (air) northeast of Palermo, about 4 1/4 miles (air) southeast of Oroville 129 Comment
  CHSC111150  Baccharis pilularis subsp. consanguinea Lowell Ahart 2012-6-14 18194 Butte High bank on the north side of Bige Chico Creek, about 30 yards east of Mangrove Avanue, Annie's Glen, Lower Bidwell Park, Chico. 62 Comment
  CDA20248  Bacopa eisenii G. D. Barbe 1984-8-25 4191 Butte Sacramento Valley; Biggs Rice Experiment Station, N of Biggs. 0 Comment
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Dec 5 2007
  RSA758602  Bacopa repens Peter Fritsch, Boni Cruz 2005-8-9 1788 Butte Biggs Rice Experiment Station, about 3.5 miles northwest of Biggs. Weed experiment plot at the corner of Riceton Road and Hamilton Road. 41 Comment
  UCD19369  Bacopa rotundifolia E. Dean; with J. Ditomaso and E. Healy 2001-8-20 860 Butte Biggs UC Field Station. North of town of Biggs, W of jct of Hwys 99 and 162. Just S of main research buildings at field station, W of RR tracks and ca. 2 east-west running dirt roads S of buildings. Along east-west running dirt road. 30 Comment
  UCD114266  Barbarea orthoceras E. B. Copeland 1930-6-27 s.n. Butte Vicinity of Jonesville, Lassen National Forest. 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
  CHSC7073  Berberis aquifolium var. dictyota R. B. Watkins 1969-3-31 12 Butte .6 mi e of Jarbo gap, 2yds. S on Forest Service Rd. #23N12. 670 Comment
  SFV1330  Berberis aquifolium var. repens M. L. Vincent 1961-3-31 12 Butte Sierra Nevada Paradise. 0.5 miles west of Harrison and Stearns roads. 530 Comment
  CAS-BOT-BC75549  Berberis dictyota Lowell Ahart 1988-3-27 5942 Butte Along Poe Power House Road, about 0.1 mile north of the bridge across the North Fork of the Feather River. 350 Comment
  CHSC113531  Bergia texana Lowell Ahart 2014-9-23 19865 Butte On the southeast part of Horseshoe Lake, near the northwest corner of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. 88 Comment
  CAS-BOT-BC102068  Bidens frondosa Lowell Ahart 1981-9-15 3167 Butte Along French Creek 1300 Comment
  CHSC26659  Bidens frondosa M. S. Taylor 1977-8-16 1503 Butte In Clear Creek, Butte College Campus, ca. 15 mi S of Chico. 60 Comment
  CHSC24496  Bistorta bistortoides M. S. Taylor 1976-6-28 1164 Butte Ca. 1/4 mi e of Old Humboldt Rd, in Butte Meadows. 1341 Comment
  NY31001  Blennosperma californicum R. M. Austin s.n. Butte Mesa, near Little Chico Creek Comment
  CHSC90187  Blennosperma nanum Ross L. Jones 1989-2-25 3 Butte Ca. 100 m e of abandoned city dump bordered by Highway 32 and Humboldt Rd., immediate outskirts e of Chico. 60 Comment
  CAS-BOT-BC15943  Boechera breweri subsp. breweri Lowell Ahart 1980-8-2 2520 Butte Humboldt Peak. 2300 Comment
  JEPS104354  Boechera breweri subsp. shastaensis Lowell Ahart 2003-4-10 10063 Butte On basalt cliffs, on the e rim of South Table Mountain, ca 2 1/2 mi (air) n of Oroville. 332 Comment
  CAS-BOT-BC16036  Boechera breweri subsp. shastaensis J. D. Jokerst 1979-5-21 0259 Butte 100 meters southeast of Little Chico Creek. 243 Comment
  CHSC33228  Boechera rectissima R. E. Preston 1981-6-17 92 Butte Ca. 30 m e of Humboldt Rd, ca. 0.8 km w of Humboldt Peak and 3.5 km ne of Jonesville. 1967 Comment
  SEINET10874029  Boisduvalia stricta Mary Susan Taylor 1980-5-31 Taylor 2755 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
  CHSC36842  Bolboschoenus glaucus M. S. Taylor 1982-5-22 4503 Butte Graylodge Waterfowl Refuge, in vicinity of parking lot 6, on Rutherford Rd, ca. 1/2 mi e of its jct with Pennington Rd, ca. 12 mi sw of Gridley. 21 Comment
  CAS-BOT-BC28203  Bolboschoenus glaucus Verne Grant; Herbert L. Mason 1956-8-7 12291 Butte Gridley Road north of Butte Sink Comment
  UC1751225  Botrychium montanum Timothy B. Devine 1985-7-7 880 .1 Butte 1 mi NE of Jonesville (Jones Creek at jct with Humboldt Road) 1615 Comment
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Oct 11 2007
  SEINET10971526  Botrychium multifidum subsp. silaifolium Lowell Ahart, Peter Ahart 1983-9-21 Ahart 4462 Butte T20N R8E section 5. Along French Creek, ca. 3 mi n of the Sly Creek Dam, n of Strawberry Valley. Yellow Pine Forest; 900 m. 900 Comment
  JEPS93943  Boykinia major Vernon H. Oswald and Lowell Ahart 1998-8-11 9463 Butte 0.7 mi n of Four Trees-Coyote Gap Road (USFS 25N95 to Upper Wildcat Creek); USFS 25N95 1408 Comment
  CHSC67316  Brachypodium distachyon James D. Jokerst; Barbara Castro 1992-5-19 3353 Butte Cascade Range Foothills. Unnamed canyon N of Nugen Canyon on the S side of Neal Rd. near the Butte County Sanitary Landfill. 76 Comment
  CHSC41414  Brassica nigra Lowell Ahart 1986-5-10 5273 Butte In a field, Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CAS-BOT-BC145439  Briza maxima Lowell Ahart 1972-5-6 s.n. Butte Peter Ahart Ranch, Honcut. 45 Comment
  UCD139145  Brodiaea californica H. A. Hannesson; R. N. Raynor 1941-5-9 s.n. Butte 4 miles N of Gridley. Comment
  RSA32795  Brodiaea californica A. A. Heller 1938-5-22 15106 Butte Near the Chico Airport Comment
  CAS-BOT-BC482210  Brodiaea californica subsp. californica David D. Keck 1933-5-30 2410 Butte 1 mile west of Richardson Springs Comment
  SD48546  Brodiaea californica subsp. californica E. K. Balls 1957-5-23 22531 Butte U.S. Highway 99E, 1.7 miles northwest from junction with road from Pentz. Open grassland. 91 Comment
  CHSC2071  Brodiaea coronaria V. Holt 1960-5-7 Butte Oroville Road. 79 Comment
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Jun 17 2014
  CHSC2074  Brodiaea elegans E. Walker 1932-6-26 Butte Magalia Heights. 731 Comment
  CHSC46856  Brodiaea minor R. A. Schlising; P. Broyles 1988-7-9 4575 Butte E of Paradise and Magalia, and N of Oroville and Jarbo Gap; along Rim Road. 792 Comment
  JEPS5507  Brodiaea minor W. L. Jepson 1934-5-4 16621 Butte 2.5 mi ne Cana Comment
  JEPS7701  Brodiaea minor W. L. Jepson 1934-5-4 16622 Butte 2.5 mi ne Cana Comment
  CAS-BOT-BC484501  Brodiaea minor H. L. Mason 1927-5-9 3709 Butte Flats of the Sacramento Valley, 12 miles west of Oroville Comment
  POM109800  Brodiaea minor C. C. Bruce 1897-04 2123 Butte Oroville road. Comment
  RSA113236  Brodiaea nana E. K. Balls, Lee W. Lenz 1955-5-13 20483 Butte 3.4 miles E. of turn-off U.S. Hwy. 99 to Oroville. 61 Comment
  CHSC112681  Brodiaea sierrae Lowell Ahart 2013-7-1 18812 Butte Open disturbed area, about 150 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/4 miles (air) southwest of Forbestown. 737 Comment
  CHSC92936  Brodiaea sierrae L. P. Janeway 2005-7-16 8497 Butte Northern High Sierra Nevada. On Rocky Ridge, along Rim Road (Ponderosa Way); about 1.3 km south of Batchelor Point. Near ridgetop. 927 Comment
  CAS-BOT-BC486486  Brodiaea sierrae Lowell Ahart 1983-6-15 4053 Butte Peter Ahart Ranch, Honcut, California. Near large rocks on flood plains along the edges of North Honcut Creek, about 1 1/2 miles north and 3 miles east of Honcut. 50 Comment
  SEINET10533863  Brodiaea volubilis A. Arthur Heller 1913-3-28 Heller 10765 Butte Ditch along Table Mountain 8 miles north of Oroville. 600 feet. 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
  SD122511  Bromus carinatus Lowell Ahart, Peter Ahart 1984-6-10 4706 Butte NE of Forbestown; about 2 mi SW of Forbestown Diversion Dam 700 Comment
  CAS-BOT-BC149548  Bromus carinatus var. carinatus John Thomas Howell 1967-6-22 42629 Butte Sierra Nevada. Magalia. 701 Comment
  CHSC87953  Bromus carinatus var. carinatus Lowell Ahart 2004-6-22 11115 Butte On the north side of Doe Mill Road, about 100 yards southwest of the bridge across Butte Creek, about 2 miles (air) southeast of Forest Ranch, about 5 miles (air) west of Stirling City. 692 Comment
  UC816144  Bromus carinatus var. carinatus A. A. Heller 1917-7-26 12832 Butte Butte Meadows 1280 Comment
  CAS-BOT-BC155944  Bromus commutatus Lowell Ahart 1988-5-30 6031 Butte About 1/12 mile north of the bridge across the North Fork of the bridge across the North Fork of the Feather River, along Poe Power House Road, about 2 miles southeast of Jarbo Gap. 335 Comment
  CHSC66971  Bromus hordeaceus James D. Jokerst 1992-5-19 3361 Butte Cascade Range Foothills. Stone Ridge Ranch Development Site E of Cohasset Rd. at Chico Municipal. On terrace at powerlines on S side of Sheep Hollow. 97 Comment
  CHSC88196  Bromus inermis subsp. inermis Lowell Ahart 2004-7-23 11307 Butte On the west side of Philbrook Reservoir Road, about 20 yards south of the bridge across the West Branch of the Feather River, about 1 1/2 miles (air) northwest of Philbrook Reservoir Dam, about 3 3/4 miles (air) southeast of Butte Meadows. 1507 Comment
  CHSC96861  Bromus japonicus Lowell Ahart 2007-6-3 13976 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
  CAS-BOT-BC162459  Bromus laevipes P. B. Kennedy 1914-5-1 s.n. Butte Gradeta Paradice. Comment
  SEINET10935012  Bromus laevipes Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4058 Butte T20N R5E sec 5. Along Bloomer Hill Rd, ca. 1/8 mi w of Oroville-Quincy Hwy, 1.3 mi s of Berry Creek School, ne of Oroville. Foothill Woodland; 400 m. 400 Comment
  SEINET10520326  Bromus macrostachys Lowell Ahart 1987-5-6 Ahart 5550 Butte On dry disturbed soil along the road at the Poe Power House along the North Fork of the Feather River about 2 miles southeast of Jarbo Gap. 283 Comment
  CHSC68912  Bromus orcuttianus Lowell Ahart 1997-7-11 7752 Butte South side 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-BC161959  Bromus rubens Peter H. Raven 1953-5-9 5436 Butte 7.2 miles from Bangor on Oroville Road. Comment
  CHSC90968  Bromus tectorum L. P. Janeway; M. Brown, S. Mackey Hillaire, J. Tuitele-Lewis 2005-5-4 8379 Butte Northern High Sierra Nevada. Plumas National Forest; just below Road 23N02 0.5 km north of County Road 66553; near top of a minor drainage into Camp Creek but 0.7 km east of Dogwood Creek. 1067 Comment
  HSC93416  Bromus tectorum L. Ahart 1995-5-30 7585 Butte S of Beatson Hollow, about 3/4 mi. NW of Cherokee Rd., North Table Mtn., 7 mi. N of Oroville 305 Comment
  CAS-BOT-BC80355  Calocedrus decurrens Lowell Ahart 1967-2-10 s.n. Butte Near Challenge 762 Comment
  CHSC31419  Calocedrus decurrens L. Ahart 1980-9-10 2623 Butte Along the edge of Bean Creek Rd, ca. 1 mi se of Little Bald Rock, ne of Oroville. 335 Comment
  CHSC29106  Calochortus albus M. S. Taylor; J. D. Jokerst 1980-4-27 2567 Butte On s side of Humbug Rd, ca. 1/2 mi upstream from Honey Run Covered Bridge, ca. 7 mi e of Chico. 137 Comment
  SEINET12044755  Calochortus albus L. S. Rose 1931-1 s.n. Butte Coast Ranges and Sierra Nevada foothills Comment
  SEINET3884902  Calochortus albus Johann D. Watjen 1969-5-4 32 Butte Table Mountain, 0.4 mile off of Highway 70, 2 miles southwest of West Fork Feather River.; 0 98 Comment
  HSC31876  Calochortus amabilis Steven Lagos 1974-4-20 16 Butte 2 mi. S of Cherokee Comment
  CHSC34484  Calochortus luteus J. D. Jokerst 1978-5-21 127 Butte 200 met w of Hwy 32 on top of ridge. 365 Comment
  CHSC4581  Calochortus luteus C. Glascock 1965-5-16 384 Butte 1/2 mi. e of Oro-Bangor Hwy on Foothill Blvd, Oroville. Comment
  CAS-BOT-BC491856  Calochortus luteus Carl B. Wolf 1937-5-18 2820 Butte Northern Sierra Nevada Foothills, 11 mi. below Magalia on Oroville Road 152 Comment
  SBBG57700  Calochortus luteus M. M. Miles -Jun-1886 Butte Butte County [no specific locality] Comment
  CAS-BOT-BC492595  Calochortus monophyllus Mrs. B. O. Clark 1915-4-12 s.n. Butte Near Paradise in the lower Sierra Nevada, in the Lower Transition Zone 600 Comment
  CHSC25014  Calochortus nudus E. B. Copeland 1929-7-21 353 Butte Jonesville. 1550 Comment
  CHSC76967  Calochortus tolmiei Margie Collins 1894-4-1 Butte Forbestown. Comment
  CHSC98583  Calochortus tolmiei L. P. Janeway; B. Castro 2007-5-6 8968 Butte Northern High Sierra Nevada. Ridge top along a side road north of the road from Sawmill Peak to Flea Valley, 1.8 air km northeast of Sawmill Peak. 969 Comment
  UC478519  Caltha biflora E. B. Copeland June, 1930 639 Butte Jonesville. 1550 Comment
  CAS-BOT-BC273293  Calycadenia fremontii H. M. Hall 1930-8-11 12875 Butte Humboldt Road, 8.2 miles from Chico 381 Comment
  CAS-BOT-BC270001  Calycadenia multiglandulosa Lewis S. Rose 1937-6-10 37358 Butte Hurleton 579 Comment
  CHSC45089  Calycadenia oppositifolia L. P. Janeway 1988-6-14 2759 Butte Little Chico Cr ca 1 3/4 air mi S of Ten Mile House, along the road to Doe Mill Ridge. NW-facing slope on SE side of cyn. 274 Comment
  CHSC62526  Calycadenia oppositifolia B. Castro 1993-7-7 470 Butte Ca 2.5 mi SSW of Big Bar Mtn. On the N side of USFS Rd 22N84. 944 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
  RSA584737  Calycadenia oppositifolia J. T. Howell 1955-6-15 s.n. Butte West Branch of North Fork of Feather River. 183 Comment
  UC1971678  Calycadenia oppositifolia 1977-7-5 2027 Butte Skyway Road to Paradise, 0.7 mi W of Paradise 458 Comment
  UC935692  Calycadenia oppositifolia David D. Keck 1933-5-31 2411 Butte 4.3 mi n of, on Richardson Springs Rd. Chico Comment
  JEPS120033  Calycadenia spicata Lowell Ahart 2012-8-22 18420 Butte On the south side of the paved road to the shooting range in the clay pit, about 1/4 mile east of Larkin Road, about a mile south of the Oroville Airport. Comment
  CHSC30945  Calycadenia truncata L. Ahart 1980-7-4 2449 Butte On a steep hillside ca. 1/2 mi SE of Hurleton. 600 Comment
  RSA739862  Calycadenia truncata L. P. Janeway 2007-10-20 9219 Butte Cascade Range Foothills, Upper Bidwell Park, Chico, S edge of the top of N Rim overlooking Beaar Hole 291 Comment
  SEINET10904845  Calycadenia truncata subsp. scabrella Mary Susan Taylor 1979-10-5 Taylor 2231 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
  UC129117  Calyptridium monospermum Miss Kate Conger 1907-1 Butte Brush Creek Comment
  CHSC91261  Calystegia atriplicifolia subsp. buttensis L. P. Janeway 2005-5-29 8401 Butte Northern High Sierra Nevada. Along major dirt road 2.6 km south of Stirling City towards West Branch Feather River crossing. 1006 Comment
  CAS-BOT-BC221233  Calystegia malacophylla subsp. malacophylla A. A. Heller 1915-6-25 12019 Butte Chico Meadows in the Sierra Nevada 1219 Comment
  JEPS118206  Calystegia occidentalis subsp. occidentalis Dean W. Taylor 2004-6-17 19114 Butte Rocky Ridge, north side Feather River Canyon, Forest Road 23N06B under the electrical transmission line 899 Comment
  RSA394851  Calystegia occidentalis subsp. occidentalis L. Ahart, Peter Ahart 1984-6-10 4717 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown. 700 Comment
  SD3808  Calystegia occidentalis subsp. occidentalis E. B. Copeland 1931-7-4 Butte Jonesville 1550 Comment
  RSA4474  Calystegia occidentalis subsp. occidentalis E. B. Copeland 1931-7-4 674 Butte Jonesville. 1550 Comment
  SEINET10496683  Calystegia polymorpha Mary Susan Taylor 1981-5-15 Taylor 3755 Butte T22N R5E nw sec 20, Berry Creek quad. N side of 22N84, ca. 1 air mi SW of Hungrey Hunt Peak, ca. 3 air mi S of Pulga on Feather River Hwy 70. 3300 ft. 1006 Comment
  CHSC108967  Camellia reticulata Lowell Ahart; John Dittes, Josephine Guardino 2012-4-6 17805 Butte On the north side of Big Chico creek, Lost Park in Bidwell Park, city of Chico. 60 Comment
  CHSC20545  Campsis radicans M. S. Taylor 1975-6-30 823 Butte 1456 Arcadian, Chico. Comment
  CHSC112203  Capsella bursa-pastoris Lowell Ahart 2013-4-20 18556 Butte In corral at the barn, about 1/4 mile north of the Honcut Cemetary, about 3 1/4 miles (air) northeast of Honcut. 47 Comment
  CHSC35025  Capsella bursa-pastoris R. E. Preston 1982-3-27 206 Butte Along dirt road; Campbell Hills, n of Thermalito Afterbay, Oroville. In saddle. 121 Comment
  CHSC38045  Capsella bursa-pastoris R. E. Preston 1983-1-9 375 Butte In a field, w side of Aguas-Frias Rd, ca. 200 yds s of Butte Creek; ca. 13.5 mi s of Chico. 28 Comment
  CHSC38415  Capsella bursa-pastoris Vernon Oswald 1983-2-14 77 Butte Upper Bidwell Park, Chico, ca. 100 ft n of Upper Park Rd. at about the level of Brown's Hole (2.8 mi e of the power lines). In an abandoned jeep trail. 237 Comment
  JEPS103602  Capsella bursa-pastoris Lowell Ahart 2002-3-2 9415 Butte Along the sides of a dirt road by a rice field, W of the Midway, ca 1 mile N of Richvale. 30 Comment
  CHSC3628  Cardamine californica John Francis 1966-2-28 51 Butte Upper Bidwell Park, at end of main road beside creek. Comment
  RSA0116210  Cardamine californica Mrs. R. M. Austin 1883-04 21 Butte Little Chico Creek. Comment
  CAS-BOT-BC37874  Cardamine oligosperma Peter H. Raven 1954-4-17 6614 Butte Along Feather River, Oroville. Comment
  CAS-BOT-BC37885  Cardamine oligosperma Lowell Ahart 1988-3-27 5932 Butte Along the North Fork of the Feather River near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CHSC24976  Cardamine oligosperma J. Cox 1976-3-10 42 Butte N. Table Mt. Ca. 300 yds. n of Cherokee Rd., 4.3 mi. ne of Oroville. 426 Comment
  SEINET3013179  Cardamine oligosperma Sherri Wemple 1992-6-16 8 Butte Butte County, CA Covered Bridge 10.2 km SE of Chico Comment
  CHSC32631  Cardamine pachystigma M. S. Taylor; L. Hanson 1981-4-2 3472 Butte South side of Forbestown Reservoir, at base of cliff, s side of Rd 20N29, ca. 3 air mi n of Woodleaf. 548 Comment
  CHSC82709  Cardamine pachystigma L. P. Janeway; B. Castro 2002-3-27 7456 Butte Northern High Sierra Nevada. North slope of Big Bend Mountain about one third way down to North Fork Feather River; 1.0 km south-southeast of mouth of China Gulch. 652 Comment
  CHSC86576  Cardamine pachystigma L. P. Janeway; Gavin Blosser, Adam Henderson 2003-4-30 7770 Butte Northern Sierra Nevada Foothills. Just above North Fork Feather River arm of Lake Oroville, south side of lake; 2.3 km northeast of Bloomer Hill. 293 Comment
  CHSC43926  Carduus pycnocephalus Vernon Oswald 1988-5-5 3296 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. Along the highway near Dry Creek. 53 Comment
  RSA699523  Carduus pycnocephalus R. D. Fischer 2004-4-20 142 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east side addition along Hwy 32. Along Guardian Trail north of Disk Golf Course 314 Comment
  CHSC52279  Carex abrupta L. P. Janeway; R. A. Schlising, B. Castro 1988-7-23 3081 Butte Near Scotts Joh Cr 2.7 mi N of the Humboldt-to-Humbug Road. 1920 Comment
  CHSC34165  Carex amplifolia Lowell Ahart 1981-9-21 3195 Butte On bottom of French Creek, ca. 1 mi w of Sly Creek Reservoir. 1300 Comment
  CHSC68907  Carex amplifolia Lowell Ahart 1997-7-11 7749 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
  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
  CHSC53716  Carex angustata L. P. Janeway 1987-7-4 2417 Butte Along West Branch Feather River at bridge 1.8 mi from Inskip. 1341 Comment
  SEINET7550020 Image available Carex aquatilis L. P. Janeway, Gavin Blosser, John Hunt 2003-4-22 7764 Butte Oroville Dam quad. Northern Sierra Nevada Foothills. Just below high water line of Lake Oroville on south side of Bloomer Point Campground (west side of the lake); 4.7 km southwest of Bloomer Hill. 271 Comment
  CAS-BOT-BC19103  Carex aurea E. B. Copeland 1930-6-23 608 Butte Jonesville. 1500 Comment
  CHSC43867  Carex aurea Vernon Oswald 1987-5-2 2363 Butte East side of Little Chico Creek Canyon ca. 1 mi se of Forest Ranch. 609 Comment
  UC823293  Carex bolanderi Lewis S. Rose 1939-6-7 39235 Butte 3 mi N of Pulga; Feather River Canyon 518 Comment
  CHSC33768  Carex brainerdii J. D. Jokerst; R. A. Schlising, B. Banchero 1980-6-16 853 Butte Ca 50 meters N of Humboldt Rd at a point 1.9 mi. N of its junction with Hwy 32. 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
  SEINET10752410  Carex brainerdii Lawrence P. Janeway 1987-6-27 Janeway 2330 Butte T24N, R5E, Kimshew Point quad NW1/4 of sec. 21. Along Little Kimshew Cr just N of Ramsey Bar. 1341 Comment
  CAS-BOT-BC422330  Carex cyrtostachya Peter F. Zika 2011-7-6 25535 Butte Mooreville Ridge Road, 0.8 road miles N of dam on Lost Creek Reservoir, northern Sierra Nevada Highlands (n SNH) 1055 Comment
  CHSC52850  Carex densa L. P. Janeway 1988-5-19 2675 Butte Canyon of Big Chico Creek; seep along Ponderosa Way 1.2 mi NW of the creek crossing. 426 Comment
  CDA33058  Carex densa L. P. Janeway 1996-5-27 4984 Butte South side of Lunt Road, 300 ft east of Nelson Bar Road. Between Lunt Road and a branch of Hodapp Creek Comment
  CDA43058  Carex divulsa L. P. Janeway 2010-6-3 9989 Butte Sacramento Valley.; Oroville: Centennial Plaza on top of the levee along the south side of Feather River between the north ends of Lincoln Street and Oak Street. Comment
  JEPS121405  Carex divulsa subsp. divulsa P. F. Zika & L. Janeway 2012-5-17 25873 Butte near Camelia Way bridge, N bank of Big Chico Creek, alluvium over andesite, Chico Comment
  JEPS117594  Carex echinata subsp. echinata Lowell Ahart 2010-9-28 17265 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
  CHSC47062  Carex feta L. P. Janeway 1989-5-17 3246 Butte High in cyn of S Fk Feather River; along edge of road to Forbestown Diversion Dam 1.4 mi E of Forbestown Rd. 853 Comment
  JEPS114981  Carex feta Lowell Ahart 2008-6-13 14818 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 of Oroville 311 Comment
  SEINET4286135 Image available Carex feta L. Janeway, Gog, L 2008-1 3185 A Butte Near Cornelia Lott Sank Memorial Spring. Comment
  CHSC102567  Carex flacca L. P. Janeway 2009-5-25 9795 Butte Sacramento Valley. Campus of California State University, Chico; between Merriam Library, the new student services building, and Warner Ave. 59 Comment
  CHSC37065  Carex fracta L. Ahart 1982-9-29 3837 Butte On banks of Pinkard Creek, ca. 1.5 mi n of Lost Creek Reservoir Dam, ca. 3.5 mi nw of Strawberry Valley. 1200 Comment
  CHSC100876  Carex geyeri L. P. Janeway; Linus Gog 2008-7-18 9435 Butte High Cascade Range. Along Humbug Summit Road, above the Cornelia Lott Sank memorial Spring (which feeds West Branch Feather River). Comment
  CHSC110987  Carex gracilior Lowell Ahart 2012-5-17 18085 Butte On both sides of the horse trail, 10 to 50 feet north of the poor dirt road, about 100 feet south of Larch, south of Vallombrosa Avenue, Lower Bidwell Park, Chico. 73 Comment
  JEPS87705  Carex gracilior Lowell Ahart 1994-4-29 7291 Butte about 2 1/2 mi n and 2 3/4 mi e Honcut (on the w side of North Honcut Creek, about 12 mi se of Oroville); North Honcut Creek 54 Comment
  SEINET10927770  Carex gracilior Lowell Ahart 2007-4-16 Ahart 13675 Butte T17N, R4E, northeast 1/4 Section 11. On the west side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 2/3 miles east of Honcut, abouth 12 miles southeast of Oroville. 52 Comment
  SEINET7560147 Image available Carex gracilior Unknown 2003-5-8 7782 Butte Richardson Springs 7.5' quad. Sacramento Valley. North end of Chico, along Sycamore Creek 160 m west of Cohasset Road bridge. 56 Comment
  JEPS103107  Carex hoodii L. P. Janeway, B. Castro 2002-7-7 7619 Butte High Cascade Range. Along logging spur road, 0.5 km east of the County Road (Forest Service Road 25N02); 3.4 km northeast of Bald Mountain Lookout and 1.6 km southwest of Jones Meadow 1829 Comment
  SEINET4286005 Image available Carex integra L. Janeway, Gog, L 2008-1 3184 B Butte Near Cornelia Lott Sank Memorial Spring. Comment
  CHSC75310  Carex inversa Lowell Ahart 1999-5-24 8081 Butte At the edge of the lawn on the south side of the building, Butte County Historical Society museum, 2335 Baldwin Avenue, Oroville. 60 Comment
  SEINET4285869 Image available Carex jonesii L. Janeway, Gog, L 2008-1 3186 B Butte Near Cornelia Lott Sank Memorial Spring. Comment
  CHSC44997  Carex lemmonii S. C. Morey 1983-8-4 704 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  SD471  Carex lemmonii E. B. Copeland 1929-7-5 Butte Jonesville; in a sunny bog. 1500 Comment
  UCD140478  Carex lemmonii Robert E. Preston 1982-7-16 335 Butte Crane Valley. 1584 Comment
  CHSC9145  Carex multicaulis R. J. Swift 1970-4-21 85 Butte Alongside of Skyway ca. 1.5 miles N.E. of Magalia. 670 Comment
  CHSC51510  Carex nebrascensis S. C. Morey 1983-8-1 644 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  SEINET11182689 Image available Carex nervina Robert F. C. Naczi, Lawrence P. Janeway 2004-7-23 10518 Butte ca. 6.4 mi SE of village of Butte Meadows, along Philbrook Creek, E of E end of Philbrook Reservoir 1695 Comment
  JEPS120139  Carex nudata Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18010 Butte On the north side of Big Chico Creek, on the south side of the paved park road, south of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  SEINET4231788  Carex pachystachya L. Janeway, Gog, L 2008-1 3190 C Butte Near Cornelia Lott Sank Memorial Spring. Comment
  JEPS104170  Carex praegracilis Lowell Ahart 2003-5-27 10221 Butte About 100 yd w of the dirt road, w of Diversion Dam on Big Chico Creek, w of Parking Area L, Upper Bidwell Park, ca 3 1/2 mi e of Manzanita Avenue, Chico. 121 Comment
  JEPS115981  Carex praegracilis Lowell Ahart 2009-6-3 15824 Butte 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 236 Comment
  CHSC48542  Carex rossii L. P. Janeway; R. A. Schlising 1988-7-16 3009 Butte Along Colby Mountain Rd, 1/4 mi N of Jonesville. 1554 Comment
  CAS-BOT-BC117984  Carex rossii L. P. Janeway; Robert A. Schlising; B. Castro 1988-7-23 3088 Butte Jonesville quad. Scotts John Cr 2.3 mi N of the Butte Cr road. 1889 Comment
  CAS-BOT-BC117391  Carex senta A. S. Crafts 1976-4-12 s.n. Butte Peter Ahart Ranch, Honcut. 150 Comment
  CHSC44949  Carex simulata L. P. Janeway 1987-6-19 2250 Butte Mdw on Pinkard Cr, between Lewis Ridge and Mooreville Ridge, 6.5 mi from the Challenge-LaPorte Rd and Travis Saddle via the rd to Golden Trout Crossing. 1082 Comment
  CAS-BOT-BC116738  Carex subfusca Herbert Faulkner Copeland 1929-7-20 611 Butte Jonesville, in woods by Jones Creek. 1500 Comment
  SEINET7486568 Image available Carex tumulicola Peter F. Zika 2009-1 24506 Butte SE side of Concow Road at south end of Concow Reservoir, 3.7 road miles N of Route 70, Cascade Range Highlands (CaRH) Comment
  JEPS88574  Carex vulpinoidea Vernon H. Oswald and Lowell Ahart 1996-6-10 7754 Butte US Fish and Wildlife parcel between 7 Mile Lane and Sacramento River (canal at ne corner of Tract 7.2, Sanctuary I); Sacramento National Wildlife Refuge, Llano Seco Unit 33 Comment
  CHSC47014  Carex xerophila Gail Kuenster 1989-6-4 Butte On top of serpentine ridge NW of and above the upper end of Magalia Reservoir. 762 Comment
  CHSC6052  Castanea dentata M. MacArthur 1968-6-22 285 Butte Ca. 20 ft. SE of Bld. D along So-Will-lin-no st., Chico State College. 60 Comment
  CAS-BOT-BC249115  Castilleja affinis Lewis S. Rose 1945-5-12 45025 Butte Richardson Springs 304 Comment
  CHSC115404  Castilleja affinis M. Rogers 2013-5-14 Butte Oroville, Brad Freeman Tail off Oro Powerhouse Road next to the spillway. 80 Comment
  CHSC44706  Castilleja affinis R. Banchero 1980-3-27 82 Butte Along Richardson's Springs Rd Ca 4 mi NE of its jct with Cohasset Hwy, Ca 1.3 mi W of the town of Richardson's Springs. 213 Comment
  CAS-BOT-BC249584  Castilleja applegatei subsp. pinetorum Lowell Ahart 1983-6-30 4177 Butte About 1 1/2 miles north-east of Concow Res. 550 Comment
  CHSC114973  Castilleja applegatei subsp. pinetorum Lowell Ahart 2015-4-18 20055 Butte On the east side of the road to Forbeestown Reservoir, about 1/4 mile southwest of the Forbestown Reservoir, about 3-1/2 miles (air) northeast of Forbestown. 573 Comment
  CHSC93980  Castilleja applegatei subsp. pinetorum R. D. Fischer 2004-6-20 771 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 2 miles north of Butte Meadows off Scout Road. Boy Scout Camp. 1371 Comment
  JEPS124026  Castilleja applegatei subsp. pinetorum Lowell Ahart 2015-6-16 20242 Butte About 3 miles (by road) northwest of Fall River Bridge, about 4 1/2 miles (air) northwest of Camp 18, about 8 miles (air) northeast of Feather Falls. Comment
  POM193340  Castilleja applegatei subsp. pinetorum E. B. Copeland 1930-7-12 466 Butte Jonesville. 1550 Comment
  SEINET10549333  Castilleja applegatei var. fragilis Mary Susan Taylor 1978-7-19 Taylor 1776 Butte On E side of Upper Scotts John Road, ca. 2 mi N of its junction with Scotts John Road, ca. 6 mi NE of Jonesville. 1890 Comment
  SEINET10549335  Castilleja applegatei var. fragilis Mary Susan Taylor 1982-5-2 Taylor 4384 Butte 2300 ft. T22N R4E sec 13. Pulga SW quad. N side of Hwy 70, 4.2 mi w of Pulga bridge, ca. 19 air mi ne of Oroville. 701 Comment
  SEINET10964360  Castilleja applegatei var. fragilis Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4074 Butte T20N R5E sec 6. Along Bloomer Hill Rd, ca. 3/4 mi w of Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 425 m. 425 Comment
  CAS-BOT-BC255469  Castilleja applegatei var. pinetorum John Thomas Howell 1955-6-14 30445 Butte Magalia, Sierra Nevada 731 Comment
  CHSC114956  Castilleja attenuata Lowell Ahart 2015-3-27 19970 Butte On the south side between the north and south branch of Coal Canyon, about 1/4 mile southwest of Coal Canyon Falls, about 1-1/2 miles (air) northwest of the improved parking area, North Table Mountain, about 8 miles north of Oroville. 371 Comment
  CHSC38710  Castilleja attenuata Vernon Oswald 1983-3-9 144 Butte Upper Bidwell Park, Chico, on the north slope near the head of the intermittent stream which crosses Upper Pard Rd. 0.5 mi e of the power lines. 213 Comment
  CHSC39929  Castilleja attenuata M. S. Taylor; V. Oswald 1984-4-4 5386 Butte S side of Humbug Rd, 3.1 mi W of Nimshew, ca. 10 air mi NE of Chico. Comment
  SD111899  Castilleja attenuata Barbara Ertter, Lowell Ahart, Jeff Strachan 1980-5-6 3274 Butte Peter Ahart Ranch ca 2I(c) mi NE of Honcut between Oroville and Marysville, plowed grainfiled, Valley Grassland 29 Comment
  SFV10458  Castilleja attenuata M. L. Vincent 1964-4-9 532 Butte 1.5 miles south of Pearson Road. Comment
  CHSC87560  Castilleja lacera R. D. Fischer 2004-4-9 63 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. 320 Comment
  UC885346  Castilleja miniata A. A. Heller 1938-7-20 15280 Butte 7 mi e Chaparral (upper end of Snag Lake); Snag Lake 1524 Comment
  UC444430  Castilleja rubicundula subsp. lithospermoides A. A. Heller 1914-5-8 Butte Clear Creek; ; Clear Creek, Butte Co. Comment
  CHSC42854  Castilleja subinclusa Lowell Ahart 1987-5-11 5614 Butte South of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 868 Comment
  UC886575  Castilleja tenuis A. A. Heller 1938-7-20 15287 Butte 7 mi e Chaparral (meadow upper end of Snag Lake); Snag Lake 1524 Comment
  CAS-BOT-BC40502  Caulanthus lasiophyllus Lowell Ahart 1982-5-29 3445 Butte Peter Ahart Ranch, about 1.5 miles north and 2.25 miles east of Honcut. 50 Comment
  UC175535  Ceanothus cordulatus A. A. Heller 1913-6-7 10828 Butte near Stirling (West Branch of the North Fork of the Feather River) Comment
  SEINET13945808 Image available Ceanothus cuneatus A. A. Heller 1914-1 11210 Butte Canyon of Big Chico creek, elev about 250 ft 76 Comment
  SBBG121216  Ceanothus diversifolius L. Ahart 2007-7-10 14283 Butte N side of USFS Rd 21N31Y, ca. 0.6 mi W of Bald Rock Rd, ca 17 mi NE of Oroville 1032 Comment
  CAS-BOT-BC50814  Ceanothus integerrimus Mrs. J. H. Morrison 1932-5-1 s.n. Butte Durham Comment
  CHSC39784  Ceanothus integerrimus Eloise Gallatin 1935-5-2 Butte Paradise. Comment
  JEPS34380  Ceanothus integerrimus Rimo Bacigalupi and L. R. Heckard 1963-5-14 8856 Butte ca 1 mi below and w Paradise (along Honey Run Rd) Comment
  SBBG32273  Ceanothus integerrimus L. S. Rose 1968-6-12 Butte Feather River Cyn, Pulga 487 Comment
  UC1070772  Ceanothus integerrimus P. L. Johannsen 1936-7-30 975 Butte 3 mi wsw Chaparral; Paynes Creek quad. 1371 Comment
  UC718223  Ceanothus integerrimus Carl B. Wolf 1937-5-18 8728 Butte 5 mi below Magalia (on Oroville Rd.); Northern Sierra Nevada 609 Comment
  POM196019  Ceanothus integerrimus var. macrothyrsus E. B. Copeland 1929-7-14 838 Butte Jonesville. 1650 Comment
  CAS-BOT-BC51730  Ceanothus lemmonii A. A. Heller 1914-5-18 11371 Butte Forest Ranch, West slope of the Sierra near Forest Ranch 822 Comment
  CAS-BOT-BC51733  Ceanothus lemmonii Mrs. J. H. Morrison 1932-5-30 s.n. Butte Durham Comment
  CHSC28969  Ceanothus lemmonii J. D. Jokerst; M. S. Taylor 1980-11-14 441 Butte Common along sides of Lumpkin Rd, ca 200 m N of its jct with MacCabes Cr. Comment
  UC870592  Ceanothus lemmonii Lewis S. Rose 1937-6-10 37377 Butte Forbestown 838 Comment
  UCD112164  Ceanothus lemmonii L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  CHSC10678  Ceanothus oliganthus var. sorediatus Lowell Ahart 1965-4-15 Butte Robinson Mill Road. 60 Comment
  CHSC86136  Ceanothus parvifolius John Dittes 2002-6-29 624 Butte Northern High Sierra Nevada Range; Watson Ridge; ca. 2.3 air-miles south of Middle Fork Feather River, ca. 2.9 air-mile west by southwest of Cascade, ca. 6.8 air-miles north by northeast of town of Feather Falls. On slope above FS access road. 1255 Comment
  CAS-BOT-BC52013  Ceanothus prostratus John Thomas Howell 1962-6-16 37582 Butte Pentz road 2 mi. S. of Magalia 609 Comment
  UC202361  Ceanothus prostratus H. M. Hall 1914-7-31 9822 Butte Humboldt Road 1066 Comment
  UCR131691  Ceanothus prostratus C. B. Wolf 1941-7-23 11054 Butte Northern Sierra Nevada Mtns., 7 miles west of De Sable on road to Forest Ranch 762 Comment
  CHSC6002  Cedrus atlantica M. MacArthur 1968-6-19 246 Butte Front of Administration bld., Chico State College. 60 Comment
  CHSC62371  Celtis B. Castro 1990-5-6 424 Butte Within the Chico Tree Improvement Center at SE edge of Chico, via Morrow Lane, ca 200 ft S of a branch of Comanche Creek (or 'Edgar Slough'). along the entrance road ca 300 ft W of the main office building, at the interface betweeen a riparian and orchard environment. 70 Comment
  UC2026880  Celtis occidentalis Lowell Ahart, Susan Bazell, Josephine Guardino, Wes Dempsey 2012-7-5 18271 Butte Path in Cedar Grove, west parking area, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC281945  Centaurea benedicta A. A. Heller 1914-4-24 11416 Butte 8 miles N of Oroville Comment
  CHSC107125  Centaurea melitensis L. P. Janeway 2011-6-7 10369 Butte Cascade Range Foothills. East side of Chico; north side of Humboldt Road 3.0 road km east of Bruce Road. 186 Comment
  CHSC31597  Centaurea solstitialis L. Ahart 1977-6-16 1418 Butte Near North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  JEPS117256  Centaurium muehlenbergii Lowell Ahart 2010-6-20 16829 Butte About 1/4 mile north of Cox Lane, about 1 1/2 miles east of Palermo Honcut Highway, Guidci Ranch, about 7 1/2 miles (air) southeast of Oroville 59 Comment
  CDA43076  Centaurium tenuiflorum L. P. Janeway 2011-6-26 10401 Butte Cascade Range Foothills/Sacramento Valley.; Upper Bidwell Park, Chico; just west of Horseshoe Lake. Comment
  CHSC100515  Centaurium tenuiflorum Lowell Ahart 2008-11-4 15402 Butte On the sides of Potter Ravine, below the high water line of Lake Oroville, about one mile north of the large parking area on the north end of Oroville Dam, about 5 miles (air) northeast of Oroville. 242 Comment
  CHSC46469  Centromadia parryi subsp. rudis Vernon Oswald 1989-6-26 3812 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch), ca. 0.25 mi n of the s gate. 18 Comment
  CHSC21040  Cephalanthus occidentalis var. californicus M. S. Taylor 1975-7-9 834 Butte Scattered on E side of Big Chico Creek, Bare hole, Upper Bidwell Park, Chico. 152 Comment
  SEINET10537463  Cerastium viscosum Mary Susan Taylor 1975-4-6 Taylor 435 Butte Chico. 52 Comment
  CAS-BOT-BC179535  Cercis occidentalis Ahart Lowell 1979-4-3 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  SEINET10452400  Cercis occidentalis Mary Susan Taylor 1975-4-26 Taylor 531 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-BC136998  Cercocarpus betuloides var. betuloides A. A. Heller 1915-4-12 11808 Butte Near Cohasset Comment
  CHSC86851  Chaenactis glabriuscula var. heterocarpha L. P. Janeway; Gail Kuenster, Shirley Innecken 2003-5-14 7787 Butte Northern Sierra Nevada Foothills. West side of West Branch Feather River arm of Lake Oroville, 680 m southwest of Cape Horn. 314 Comment
  CHSC46071  Chaenactis glabriuscula var. megacephala J. D. Jokerst; R. Schlising, M. Foster 1983-5-24 1782 Butte Top of Bald Rock Dome. Comment
  SEINET10475244  Chaenactis glabriuscula var. megacephala Mary Susan Taylor 1976-4-27 Taylor 1099 Butte Abundant in Yellow Pine Forest, on N or S side of Ponderosa Way, ca. 1-4 mi E of junction of Villas Rd and Cohasset Hwy, ca. 23 mi NE of Chico. 610 Comment
  CHSC29392  Chamaesaracha nana R. A. Schlising; R. Banchero 1980-6-12 3682 Butte 8.6 mi S of Butte/Tehama county line on Hwy 32, (= 0.1 mi S of Fire Tower). On roadcut. Comment
  RSA754842  Chamaesyce maculata L. Ahart 2009-8-15 16283 Butte Garden area, Peter Ahart Ranch, about 1.5 miles north and 1 miles east of Honcut, about 12 miles south of Oroville. 34 Comment
  CHSC102508  Chamaesyce ocellata Lowell Ahart 2009-5-30 16955 Butte Open area west of the Guardian Rock Trail, about 120 yards north of Pine Trail, about 3/8 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico. 398 Comment
  UC765101  Chamaesyce ocellata R. F. Hoover 1938-8-2 3718 Butte 7 mi s Chico Comment
  CDA38788  Chamaesyce serpillifolia subsp. serpillifolia L. Ahart 2011-10-29 17722 Butte On the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 mile northwest of Biggs. Comment
  CHSC69719  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 1997-10-24 7942 Butte About 20 yards north of the South Fork of the Feather River and on the east side of Sucker Creek, strand of Lake Oroville, about 1/4 mile west of the Ponderosa Dam. 274 Comment
  CHSC97716  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 2007-10-31 14523 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
  UC204565  Chamaesyce serpyllifolia A. A. Heller 1914-8-11 11674 Butte w Chico; Sacramento River Comment
  CAS-BOT-BC165955  Chamerion angustifolium H. F. Copeland 1920-8-29 143 Butte Jonesville 1219 Comment
  CAS-BOT-BC66364  Cheilanthes covillei Lowell Ahart 1977-4-5 s.n. Butte South of the California Juniper on the west side of the South Butte, Sutter Buttes 500 Comment
  CAS-BOT-BC69444  Cheilanthes gracillima A. A. Heller 1917-7-29 12852 Butte Summit of Jonesville. 2133 Comment
  JEPS98298  Cheilanthes gracillima Lowell Ahart 2000-6-27 8518 Butte Around large granite rocks, Big Bald Rock, about 3 miles (air) east of madrone Lake, about 12 miles (air) northeast of Oroville. 993 Comment
  SEINET10529932  Cheilanthes siliquosa Mary Susan Taylor 1978-5-6 Taylor 1584 Butte Just N of Magalia, in large serpentine area along the Skyway. 610 Comment
  RSA746977  Chenopodium album var. missouriense George K. Helmkamp, E. Helmkamp 2007-10-7 13065 Butte East Gridley Road at the west edge of the Feather River bridge 27 Comment
  SEINET10871663  Chenopodium botrys Lowell Ahart 1984-8-19 Ahart 4781 Butte West of Pacific Heights Road, about 5 miles south-west of Oroville. Comment
  CHSC69681  Chenopodium strictum var. glaucophyllum Vernon Oswald 1987-7-30 3171 Butte Ranch Arroyo Chico. On the edge of the Sacramento River just upstream from the washout (Chico Landing site). 36 Comment
  CHSC99490  Chenopodium strictum var. glaucophyllum Lowell Ahart 2008-7-23 15147 Butte North edge of the South Fork of the Feather River, about 10 yards east of where Sucker Creek enters the South Fork of the Feather River, below the high water line of Lake Oroville, about 1/4 mile west of the Ponderosa Dam. 258 Comment
  CHSC44162  Chimaphila menziesii Vernon H. Oswald; Lowell Ahart 1988-7-29 3649 Butte Ca. 5 mi (air) se of Jonesville on the ridge running eastwards from the peak of Snow Mtn. 2097 Comment
  JEPS93939  Chimaphila umbellata Vernon H. Oswald and Lowell Ahart 1998-8-11 9462 Butte USFS 25N95 to Upper Wildcat Creek 0.3 mi n of Four Trees-Coyote Gap Road Upper Wildcat Creek; USFS 25N95 to Upper Wildcat Creek 1463 Comment
  SBBG16796  Chimaphila umbellata E. B. Copeland 1930-6-24 Butte Jonesville 1550 Comment
  POM161684  Chimaphila umbellata subsp. occidentalis E. B. Copeland 1929-07 s.n. Butte Jonesville. 1550 Comment
  CAS-BOT-BC184907  Chloris virgata Lowell Ahart 1987-7-19 5841 Butte Along the Midway, about 0.5 mile south of Durham. 48 Comment
  CDA952  Chloris virgata D. G. Kelch 2006-8-2 6 .337 Butte Along Ord Ferry Rd. Comment
  CHSC2255  Chlorogalum pomeridianum M. Underhill 1952-7-7 Butte 609 Comment
  RSA489567  Chorizanthe polygonoides James L. Reveal 1988-6-3 7007 Butte Paradise, 0.2 mile south of Bennett Road along South Libby Road onto the northern end of Morgan Ridge. 518 Comment
  CHSC39931  Chorizanthe polygonoides var. polygonoides M. S. Taylor; V. Oswald 1984-4-4 5392 Butte S side of Humbug Rd, ca. 2 mi SW of Nimshew, ca. 12 air mi NE of Chico. In dry open bare patches on hillside. Comment
  CHSC46296  Chorizanthe polygonoides var. polygonoides Vernon Oswald 1989-5-16 3771 Butte Ponderosa Way on Musty Buck Ridge between Cohasset and Big Chico Creek. 762 Comment
  UC370341  Chorizanthe pungens var. pungens C. C. Parry 1883-1 Butte Chico Comment
  JEPS117520  Chorizanthe stellulata L. Ahart 2010-5-23 16735 Butte West side of Pine Trail, about 40 yards west of Highway 32, about 9 air miles northeast of Chico 479 Comment
  UC1135229  Chrysolepis sempervirens C. G. Albertus 1933-7-26 52 Butte 0.25 mi s Barnum Mill; Chico Quad. 1371 Comment
  CHSC42205  Cicendia quadrangularis Kent Clement 1986-4-7 14 Butte On North Table Mountain, 10.5 km n of Oroville, w of Cherokee Rd. 411 Comment
  UCD72994  Cicendia quadrangularis Ayzik Solomeshch 2003-4-9 s.n. Butte Wurlitzer Reserve, about 10 mi. north from Chico on Hwy 99, west side of the road. Comment
  SEINET10454838  Cicendia quadrangularis Mary Susan Taylor 1980-4-6 Taylor 2456 Butte On S side of Melody Lane, ca. 1 mi E of its junction with Honcut-Palermo Rd, ca. 5 mi S of Palermo. With L. Ahart & J.D. Jokerst. 38 Comment
  CHSC42911  Cicuta douglasii Lowell Ahart 1987-7-17 5838 Butte Along the edge of the North Fork of the Feather River, near the Poe Power House, about 2 miles south- east of Jarbo Gap. 274 Comment
  POM219646  Circaea alpina subsp. pacifica H. F. Copeland 1928-8-21 428 Butte Neighborhood of Jonesville, woods by Willow Creek 1524 Comment
  CHSC46311  Cirsium occidentale var. candidissimum Vernon Oswald 1989-6-8 3803 Butte Camp Creek Rd, 0.5 mi s of Dogwood Creek, n of Pulga. Along road. 585 Comment
  UC921141  Cirsium occidentale var. candidissimum H. S. Reed 1939-8-5 292 Butte Chico Comment
  CHSC6606  Citrus M. MacArthur 1968-6-19 317 Butte Yard by building D, Chico State College campus. 60 Comment
  CHSC35136  Clarkia biloba subsp. brandegeeae R. Schlising; R. Banchero 1980-6-6 3646 Butte N of Lake Oroville along Hwy 162, 1.7 mi N of Bidwell Bar Bridge crossing of the lake; roadside bank. 304 Comment
  CHSC46129  Clarkia biloba subsp. brandegeeae Lowell Ahart 1984-6-8 4658 Butte Along Ponderosa Way, near the Ponderosa Dam, about 2 air miles north-west of Forbestown. 335 Comment
  CHSC84864  Clarkia concinna subsp. concinna L. P. Janeway; John Hunt 2003-6-5 7810 Butte Northern Sierra Nevada Foothills. Steep north-facing slope above Lake Oroville 550 m east of the south end of Bidwell Bar Bridge. 290 Comment
  CHSC88647  Clarkia gracilis subsp. albicaulis Linnea Hanson 1994-6-13 350 Butte Plumas National Forest. Lunt Road, northeast side. 487 Comment
  UCD104562  Clarkia gracilis subsp. albicaulis H. Lewis; M. 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
  CHSC46131  Clarkia gracilis subsp. gracilis Lowell Ahart 1975-5-12 755 Butte On dredger piles, along North Honcut Creek, Peter Ahart Ranch, about 3/4 mile north and 2 1/2 miles east of Honcut, about 12 miles south of Oroville. 36 Comment
  CDA13328  Clarkia mildrediae subsp. lutescens G. F. Hrusa, T. D. Wilfred 1996-7-9 13174 Butte Sierra Nevada; Near intersection of 22N89 and Hwy 162. Approx. 0.2 m. on 22N89. Immed. S of Rogers Cow Camp on Hwy 162. Comment
  CHSC71152  Clarkia mildrediae subsp. lutescens L. P. Janeway; B. Castro 1994-7-8 4686 Butte 0.7 mi south of South Branch Middle Fork Feather River; 1 mi west-southwest of the mouth of Cascade Creek. Road cutbank. 1234 Comment
  UC1422865  Clarkia mosquinii Mosquin 1959-7-2 3336 Butte 0.2 mi w Enterprise (along highway) Comment
  RSA646257  Clarkia mosquinii subsp. xerophila T. Mosquin 1959-7-2 3336 Butte 0.2 mile west of Enterprise, along highway Comment
  UCD21825  Clarkia purpurea L. D. Gottlieb 2003-5-24 303 Butte Wilbur Rd., at Hwy 162, west of Oroville. Comment
  CHSC92589  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-BC163649  Clarkia purpurea subsp. quadrivulnera A. A. Heller 1914-5-22 11422 Butte Near Richardsonn Springs Comment
  SEINET10906911  Clarkia purpurea subsp. quadrivulnera Heidi H. Schmidt 1993-6-15 Schmidt 866 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-BC172377  Clarkia purpurea subsp. viminea L. P. Janeway 1991-6-1 3987 Butte Northwest-facing cut-bank of Dark Canyon Road 3.35 mi south of Big Bend Road/Parkhill 304 Comment
  CAS-BOT-BC164782  Clarkia rhomboidea H. F. Copeland 1931-6-10 1520 Butte Jonesville. Rocky crest of ridge between Willow and Colby Creeks 1676 Comment
  CHSC59115  Clarkia rhomboidea L. P. Janeway 1991-6-1 3980 Butte Southwest-facing cut-bank of Dark Canyon Road 1.0 mi south of Big Bend Road/Parkhill. 512 Comment
  CAS-BOT-BC164800  Clarkia rhomboidea L. P. Janeway 1987-5-7 2029 Butte Along Dark Canyon Road 1.0 mi south of Big Band Road/Parkhill 512 Comment
  RSA448333  Clarkia rhomboidea L. Ahart, Peter Ahart 1984-5-28 4651 Butte On a large road cutbank along Highway 40, now called Dark Canyon Road, ca. 2 miles E of Old Yankee Hill, ca. 16 miles NE of Oroville. 450 Comment
  CHSC50053  Claytonia exigua subsp. exigua Lowell Ahart 1990-3-19 6422 Butte Growing on steep banks, along the south side of Pacific Heights Road, about 3 1/2 miles southwest of Oroville. 36 Comment
  CAS-BOT-BC439429  Claytonia parviflora subsp. parviflora A. A. Heller 1919-4-12 13100 Butte Cherokee Mine Comment
  CHSC33698  Claytonia parviflora subsp. parviflora L. Ahart 1981-4-9 2755 Butte On dry grassy soil on banks of North Honcut Creek, Peter Ahart Ranch, ca. 1 mi n and 3 mi e of Honcut. 50 Comment
  CHSC54368  Claytonia parviflora subsp. parviflora M. Bailey 1991-3-6 545 Butte On property s of Honey Run Road and e of Butte Creek; proposed location of Butte Creek Volunteer Fire Station. 103 Comment
  CAS-BOT-BC439433  Claytonia parviflora subsp. parviflora Junea Kelley 1920-4-24 s.n. Butte Los Vergils [Verjeles] Comment
  CHSC103969  Claytonia perfoliata subsp. perfoliata Lowell Ahart 2010-5-7 16614 Butte Below rim, north side of disk golf area, on a ridge about 250 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 360 Comment
  CHSC34944  Claytonia perfoliata subsp. perfoliata Patricia Haberkern 1974-3-24 21 Butte Abundant in grassy, shaded meadow ca. 50 yds. w Sycamore Pool in Bidwell Park, Chico. 60 Comment
  CHSC56762  Claytonia rubra J. Monelo 1990-4-16 10 Butte Butte Meadows - Humboldt Rd ca 1.9 mi n of Hwy 32 facing rock outcropping ca 100 ft nw of Humboldt Rd. 1341 Comment
  SEINET10830266  Claytonia rubra Mary Susan Taylor 1981-4-27 Taylor 3557 Butte T21N R5E se sec 24, Brush Creek quad. Ridge between 21N33 and 21N80, ca. 1 mi SW of Bald Rock Rd, ca. 0.5 mi N of Zink Rd, ca. 2 mi SW of Brush Creek. Yellow Pine Forest; 3300 ft. 1006 Comment
  CHSC1438  Clematis lasiantha J. Koopman 1929-4-18 Butte Honey Run canyon. 396 Comment
  CHSC95205  Clematis lasiantha R. D. Fischer 2004-3-28 806 Butte Chico. Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition off Hwy.32. Collected along Guardian Trail. 335 Comment
  CDA36307  Clematis lasiantha J. R. Keck Jr. 1978-5-23 s.n. Butte Highway 70, Jarboe Gap. Near Poe Power House. 0 Comment
  CDA24214  Clematis ligusticifolia D. G. Kelch 2006-8-2 06 .335B Butte Along Ord Ferry Rd. Comment
  CHSC42975  Clematis ligusticifolia Lowell Ahart 1987-7-3 5753 Butte At the Poe Power House, near the North Fork of the Feather River, about 2 miles south-east of Jarbo Gap. 280 Comment
  CHSC44298  Clintonia uniflora V. Oswald; L. Ahart 1988-6-17 3401 Butte West side of Pinkard Creek ca. 1 mi n of Lost Creek reservoir. 1028 Comment
  SEINET12268888  Collinsia bicolor Unknown 5 s.n. Butte no further locality Comment
  SFV3355  Collinsia heterophylla M. L. Vincent 1962-4-20 214 Butte Highway alternate 40. Feather River Canyon Road, 6 miles northeast of Oroville near site of Feather River Dam. Roadside. Comment
  CHSC3928  Collinsia sparsiflora Wayne ) Baum 1967-3-21 20 Butte Along e. side of Cohasset Rd., ca. 3 mi. n. of the Keefer Rd. and Cohasset Rd. intersection. 76 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
  UC1012173  Collinsia sparsiflora var. collina F. W. Pennell, A. A. Heller 1940-6-5 25679 Butte Route 24; 2 mi. up, along Feather River, above Oroville. 609 Comment
  SBBG29150  Collomia grandiflora E. B. Copeland 1931-7-14 Butte Jonesville 1550 Comment
  POM278760  Collomia grandiflora Lyman Benson 3959 Butte First Summit, Oroville-Quincey. 1207 Comment
  SEINET12331811  Collomia grandiflora L. Ahart, Ahart, P. 1984-1 4747 Butte ca 1.5 m SE of Bald Mountain, 3/4 mi W of Oak Point, ca 4 mi NE of Stirling City 1500 Comment
  CHSC26171  Collomia heterophylla J. P. Kroessig 1977-6-14 39 Butte Ca 8 km n and w on dirt road at n end of Concow Road, ca 13 km ne of Paradise. 1100 Comment
  CHSC34993  Collomia heterophylla R. Schlising; R. Banchero 1980-6-6 3650 Butte N of Lake Oroville on Bald Rock Road, 0.8 mi S of jct with Oroville-Quincy Highway at Brush Creek. 1024 Comment
  CHSC96665  Collomia heterophylla Lowell Ahart 2007-4-30 13704 Butte On the east 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
  SEINET10496938  Collomia heterophylla Mary Susan Taylor 1978-7-21 Taylor 1803 Butte On N and S side of Oroville-Quincy Hwy, ca. 9 mi N of Lake Madrone, ca. 19 mi NE of Oroville; Yellow Pine Forest. 914 Comment
  SEINET10496939  Collomia heterophylla Mary Susan Taylor 1980-4-27 Taylor 2550 Butte T23N R3E ne sec 27. Paradise quad. Ca. 1 mi S of Nimshew, ca. 1/4 mi E of Nimshew Rd; Yellow Pine Forest. With J.D. Jokerst. 610 Comment
  UC1594615  Collomia linearis Lowell Ahart 1992-7-21 6819 Butte about 2 (air) mi ne Philbrook Reservoir (s side of hollow nw of a snow lake, on s side of Coon Hollow); Coon Hollow 1737 Comment
  RSA4470  Collomia linearis E. B. Copeland 678 Butte Jonesville. Comment
  SEINET10496711  Collomia linearis Mary Susan Taylor 1978-6-24 Taylor 1644 Butte Ernies Island, in Butte Creek, junction with Old Humboldt Road, ca. 0.5 mi W of Butte Meadows; Yellow Pine Forest. 1372 Comment
  CHSC25269  Comandra umbellata subsp. californica M. S. Taylor 1977-6-26 1376 Butte Scattered on s side of Ponderosa Way, ca. 4 mi e of Cohasset. 609 Comment
  UCD149838  Consolida ajacis Harry A. George 1967-4-24 s.n. Butte Table Mt. Comment
  CDA32001  Convolvulus arvensis L. Ahart 2009-5-3 15787 Butte About 50 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. Comment
  CHSC66438  Convolvulus arvensis Vernon H. Oswald; Lowell Ahart 1996-6-10 7743 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Common on the riprapped bank of the Sacramento River at the N end of the Riparian Sanctuary. 28 Comment
  CHSC78072  Convolvulus arvensis Shelly Pirtie 1997-4-25 34 Butte 20 miles south of Chico off of Biggs-Afton Road: Little Dry Creek. Comment
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Jun 19 2009
  CHSC2332  Corallorhiza maculata K. Chew 1954-5-29 Butte Between Flea Valley and Rag Dump, near Stirling. 1097 Comment
  UCR231505  Cordylanthus tenuis Anna M. Hurlbutt 2009-8-7 022 Butte Northern Sierra Nevada Mtns., vicinity of Inskip Inn, end of paved part of Skyway Rd., north of Paradise 1463 Comment
  SD4840  Cordylanthus tenuis subsp. viscidus E. R. Copeland 1929-7-29 469 Butte Jonesville 1650 Comment
  CHSC6030  Cornus alternifolia M. MacArthur 1968-6-19 230 Butte SE side Big Chico Creek near PSA bld. bridge, Chico State College. 60 Comment
  UC455443  Cornus nuttallii Miss Kate Conger 1907-1 Butte Brush Creek Comment
  SEINET10874016  Cornus nuttallii Mary Susan Taylor 1980-4-27 Taylor 2559 Butte T23N R3E nw sec 27. Paradise quad. Along Middle Butte Creek off of Little Butte Creek in Riparian Woodland, very shady, ca. 1.5 mi SE of Nimshew. With J.D. Jokerst. 610 Comment
  CAS-BOT-BC209586  Cornus sericea E. B. Copeland 1930-6-25 431 Butte Jonesville 1500 Comment
  RSA712760  Cornus sessilis L. P. Janeway, Matt Brown 2005-5-17 8392 Butte Plumas national Forest; along un-named creek 0.5 km west of Cedar Creek, 2.8 km north-northwest of its mouth at North Fork Feather River. 1097 Comment
  UC1122799  Cornus sessilis J. E. Sowder 1935-7-6 108 Butte 2 mi. n.e. Cohassett; Chico Quad. 944 Comment
  RSA0125553  Corydalis caseana H. M. Hall 1914-7-28 9796 Butte Butte Creek, northern Butte County 1500 Comment
  CHSC47976  Corylus cornuta var. californica Vernon Oswald 1987-6-29 3041 Butte Bald Mt., 1.1 mi (odometer) sw of the Lookout. 1645 Comment
  CHSC112709  Crassula aquatica Lowell Ahart 2013-10-26 19213 Butte On the south side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. 1681 Comment
  CHSC113357  Crassula aquatica Lowell Ahart 2014-4-25 19397 Butte Sides of a cleaned ditch, on the west side of Richvale South Highway, south of the intersection of Richvale West Road and Richvale South Highway, Richvale. 30 Comment
  CHSC38403  Crassula aquatica Vernon Oswald 1983-5-11 466 Butte Upper Bidwell Park, Chico, along the n shore of Horseshoe Lake. 100 Comment
  CHSC112195  Crassula tillaea Lowell Ahart 2013-4-20 18559 Butte In corral at the barn, about 1/4 mile north of the Honcut Cemetary, about 3 1/4 mile (air) northeast of Honcut. 47 Comment
  CHSC31019  Crassula tillaea M. S. Taylor 1980-3-15 2381 Butte Ca. 1/4 mi s of Pentz Rd, ca. 1/8 mi e of Hwy 99, ca. 15 mi s of Chico. 54 Comment
  CHSC31173  Crassula tillaea M. S. Taylor 1980-4-16 2492 Butte Lake Oroville State Recreation Area, ca. 1/4 mi s of Parish Camp just s of Lime Saddle Memorial Park, ca. 5 mi s of Paradise. 304 Comment
  CAS-BOT-BC427956  Crassula tillaea Lowell Ahart 1974-4-11 s.n. Butte Honcut 45 Comment
  CHSC110111  Crataegus monogyna L. P. Janeway 2012-3-21 10817 Butte Sacramento Valley. City of Chico; Lower Bidwell Park, north side Big Chico Creek between creek and Vallombrosa Ave near Crister Ave. 62 Comment
  CHSC82486  Crepis pleurocarpa Lowell Ahart; John Dittes, Josephine Guardino 2002-6-21 9747 Butte Mountainside, on the north side of a poor dirt road, Watson Ridge, about 2 miles (air) northeast of Bald Rock Dome, about 5 miles (air) north of Feather Falls (the town). Comment
  CDA6678  Crucianella angustifolia L. 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. Comment
  CHSC51010  Crucianella angustifolia Lowell Ahart 1990-7-4 6550 Butte About 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  JEPS108961  Crypsis alopecuroides Lowell Ahart 2006-9-11 13302 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
  CHSC41984  Crypsis schoenoides Lowell Ahart 1986-11-14 5481 Butte On the bottom of a pond, about 1/10 mile south of the clay burrow for Oroville Dam, about 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville. 36 Comment
  CHSC66367  Crypsis schoenoides Vernon H. Oswald 1996-6-20 7826 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 bed of a marsh at the SW corner of Tract 2, Sanctuary II. 33 Comment
  CHSC105798  Cryptantha affinis Lowell Ahart 2010-9-21 17228 Butte On the south side of a poor dirt road, about 1mile (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1899 Comment
  CHSC97357  Cryptantha flaccida Paul Maslin 2005-4-30 54 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10610150E 4408939N. 518 Comment
  SBBG63701  Cryptantha glomeriflora M. M. Miles -May-1886 Butte Butte County [no specific locality] Comment
  CHSC29388  Cryptantha intermedia R. A. Schlising; R. Banchero 1980-6-5 3644 Butte N of Lake Oroville along Hwy 70, s of the Pulga crossing of North Fork, Feather River. 609 Comment
  CHSC90816  Cryptantha intermedia Lowell Ahart 2005-5-2 11755 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
  CHSC37212  Cryptantha milobakeri L. Ahart 1982-7-28 3712 Butte On the bottom of the water ditch, ca. 1/8 mi n of Pacific Mine, ca. 5 mi e of La Porte. 1700 Comment
  CHSC3012  Cryptomeria japonica Carl Pejsa 1958-4-19 30 Butte Bidwell Park Forestry Station. Comment
  CHSC25256  Cuscuta californica M. S. Taylor 1977-6-26 1369 Butte On s side of Ponderosa Way, ca. 4 mi e of Forest Ranch. 548 Comment
  UCD169293  Cuscuta campestris Lowell Ahart 2006-10-1 13388 Butte About 12 miles (air) southeast of Oroville, about 2 1/2 miles north and 2 3/4 miles east of Honcut, west of North Honcut Creek. 54 Comment
  SEINET12326797  Cuscuta campestris Unknown 1983-1 4455 Butte ca 1/8 mi S of the Graylodge Wildlife Refuge headquarters, ca 12 mi SW of Gridley 35 Comment
  CHSC66667  Cuscuta pentagona Vernon H. Oswald 1996-7-17 8070 Butte Sacramento National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. In the NE corner of Tract 5, Sanctuary II. 33 Comment
  CHSC78827  Cycloloma atriplicifolium Lowell Ahart 2000-10-15 8708 Butte North of a large pond on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC105534  Cymopterus terebinthinus var. californicus Lowell Ahart 2010-9-21 17233 Butte On dry rocky dark soil, on both sides of the dirt County Road, between the Sky High Mine and Dresser Camp, about 2 miles (air) southeast of the Philbrook Resevoir Dam, about 7 miles (air) southeast of Butte Meadows. Comment
  CAS-BOT-BC190247  Cynodon dactylon Lowell Ahart 1979-6-2 s.n. Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC38803  Cynodon dactylon Vernon Oswald 1983-6-18 708 Butte Upper Bidwell Park, Chico, in Lindo Channel between Five Mile Recreation Area and the flood-control gates. 79 Comment
  CHSC41976  Cynodon dactylon Lowell Ahart 1986-11-14 5465 Butte On the bottom of a pond, about 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larking Road, about 6 miles south-west of Oroville. 36 Comment
  CHSC27949  Cynoglossum grande M. S. Taylor 1979-3-20 1943 Butte Ca. 1 mi n of jct of w br. Feather River and Hwy 70 along an old road, ca. 10 mi n of Oroville. 30 Comment
  CHSC3916  Cynoglossum grande Wayne O. Baum 1967-3-24 22 Butte Ca 8 mi. e. of the Skyway and Humbug Rd. intersection, on the s. side of Humbug Rd. 365 Comment
  CHSC92558  Cynoglossum grande L. P. Janeway 2005-4-25 8367 Butte Northern High Sierra Nevada. Plumas National Forest; upper slope of side drainage of Flea Valley Creek 180 m northeast of junction of Concow Road and Rim Road (Ponderosa Way). 951 Comment
  CHSC30284  Cynosurus echinatus M. S. Taylor; J. D. Jokerst, L. Ahart 1979-6-12 2300 Butte On rd from Magalia serpentine area to Feather River, ca. 1/2 up from the river. 670 Comment
  CHSC42360  Cynosurus echinatus Lowell Ahart 1987-5-6 5555 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
  JEPS119863  Cynosurus echinatus Lowell Ahart 2012-5-14 18067 Butte On the south side of the paved road, west of the horse trail, about 1/2 mile west of Peterson Drive, south of Vallombrosa Avenue, Lower Bidwell Park, Chico. Comment
  CDA13836  Cyperus difformis G. F. Hrusa, T. D. Wilfred 1996-9-5 13564 Butte Butte Basin; Adjacent to Durnel Road north of Nelson Rd. Comment
  CHSC31690  Cyperus difformis L. Ahart 1974-10-20 666 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC76011  Cyperus difformis Lowell Ahart; Vernon H. Oswald 1999-8-13 8139 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry. 32 Comment
  CHSC85160  Cyperus difformis John Dittes 2003-10-8 849 Butte Undesignated section of Arroyo Chico Land Grant. Northern Sacramento Valley; ca. 6.0 air-miles west by southwest of Chico, ca. 2.3 air-miles south of State Hwy 32, east bank of Sacramento River, Bidwell-Sacramento River State Park. 38 Comment
  JEPS103301  Cyperus difformis Lowell Ahart 2002-9-7 9930 Butte On the E side of Cherokee Road, N of the Thermalito Diversion Canal, on the W side of the water purification pond, ca 1 mile N of Oroville. 130 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
  UCD141025  Cyperus difformis J. M. Tucker 1953-8-28 2680 Butte Biggs Rice Experiment Station. Comment
  JEPS120017  Cyperus eragrostis Lowell Ahart 2012-10-28 18527 Butte On the south side of Big Chico Creek, about 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC114383  Cyperus erythrorhizos Lowell Ahart 1981-9-19 3191 Butte Cresta Power House. Comment
  UCD141051  Cyperus erythrorhizos P. B. Kennedy 9-10 Aug 1921 s.n. Butte Exact location unkown. Comment
  CHSC43787  Cyperus esculentus Vernon Oswald 1982-7-19 Butte Upper Bidwell Park, Chico, just downstream from the diversion dam on Lindo Channel. 79 Comment
  CHSC45114  Cyperus flavescens Vernon Oswald 1983-7-31 941 Butte Sacramento River ca. 0.25 mi downstream from Murphy's Slough (between Chico Creek and Rd. 29, Glenn Co.). Comment
  CHSC45144  Cyperus flavescens Lowell Ahart 1975-7-19 901 Butte Along the edges 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-BC113843  Cyperus niger var. capitatus Verne Grant; Herbert L. Mason 1946-9-27 13141 Butte Three miles west of Biggs. Comment
  JEPS95982  Cyperus squarrosus Lowell Ahart 1999-10-28 8302 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
  CHSC25462  Cyperus strigosus Marc Hayes; Warner 1977-9-12 102 Butte Creekbed, ca. 10 m n of wooden foot-bridge on the w branch of Clear Creek on the Butte College Campus near the intersection of Pentz and Clark Rds. 82 Comment
  CHSC34197  Cyperus strigosus J. D. Jokerst; L. Ahart 1981-9-26 1494 Butte Swale ca 100 m E of Sacramento River at the Bidwell River State Park (Chico Landing) ca 5.0 mi W of Chico. Comment
  CHSC56609  Cyperus strigosus L. P. Janeway 1988-6-26 2885 Butte Southeast rim of Coon Ridge overlooking Nance Canyon; ca 0.6 mi northeast of the high-voltage power-lines. 60 Comment
  JEPS115648  Cyperus strigosus Lowell Ahart 2009-8-13 16276 Butte About 100 yards east of the diversion structure that controls Mud Creek diversion and Lindo Channel, northeast of Hooker Oak, Upper Bidwell Park, Chico 68 Comment
  CAS-BOT-BC114207  Cyperus strigosus Lowell Ahart 1981-9-19 3185 Butte Arch Rock Tunnel, Hwy 70. 550 Comment
  CAS-BOT-BC68040  Cystopteris fragilis M. S. Taylor; J. D. Jokerst 1979-7-21 2148 Butte On Humboldt Peak, at Humboldt Summit 2154 Comment
  CAS-BOT-BC68043  Cystopteris fragilis Mary E. Wall 1920-3-28 s.n. Butte Las Plumas Comment
  UCD136366  Cystopteris fragilis M. S. Taylor 1980-4-1 2417 Butte Along S side of Butte Creek, ca. 1/4 mi. downstream from Honey Run Covered Bridge, ca. 6 mi. E of Chico. 121 Comment
  JEPS120533  Cytisus scoparius L. P. Janeway 2013-5-9 11099 Butte Northern High Sierra Nevada. Plumas National Forest; along Oroville-Quincy Hwy 0.3 km north of Madrone Lake. Comment
  SEINET10507360  Dactylis glomerata Mary Susan Taylor 1980-5-27 Taylor 2645 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
  UCD126512  Datura ferox L. Ahart 1976-9-24 1208 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC38722  Datura wrightii Vernon Oswald 1983-10-8 1054 Butte Upper Bidwell Park, Chico, on the south edge of the parking lot at Five Mile Recreation Area. 85 Comment
  SEINET10899327  Delphinium Mary Susan Taylor 1981-4-8 Taylor 3508 Butte T22N R4E north center border sec 12, Pulga SW quad. Serpentine ridge n of logging landing site just w of power lines, 1/2 mi w of Ponderosa Way/Rim Rd, ca. 5 mi n of Jarbo Gap on Hwy 70; n of Oroville. 2900 ft. 884 Comment
  CHSC101301  Delphinium nudicaule Lowell Ahart 2009-4-22 15590 Butte West side of Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC11813  Delphinium nuttallianum E. B. Copeland 1930-6-25 416 Butte Jonesville. 1550 Comment
  UC426909  Delphinium nuttallianum E. B. Copeland 1930-6-25 416 Butte Jonesville 1550 Comment
  CAS-BOT-BC121617  Delphinium patens subsp. patens Mrs. H. C. Cantelow 1940-5-10 4253 Butte E of Oroville, old road to Bucks Lake Comment
  CHSC52500  Delphinium variegatum Gary McHargue 1975-3-6 3 Butte Ca 75 yds s of Cohasset highway and 4 mi n of Chico municipal airaport, 8 mi ne of Chico. 152 Comment
  CHSC53167  Delphinium variegatum Steve Alverez 1980-3-24 20 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
  CAS-BOT-BC82877  Dendromecon rigida John Thomas Howell 1955-6-14 30442 Butte Sierra Nevada. Magalia. 731 Comment
  SEINET10448601  Dentaria pachystigma Mary Susan Taylor, L. Hanson 1981-4-2 Taylor 3472 Butte T20N R7E ne sec 32; Clipper Mills quad. South side of Forbestown Reservoir, in serpentine cliff, south side of Rd 20N29, ca. 3 air mi north of Woodleaf. l800 ft. 549 Comment
  CHSC69120  Deschampsia cespitosa subsp. cespitosa Lowell Ahart 1997-8-1 7770 Butte On the bottom of Little Kimshew Creek, Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1524 Comment
  JEPS94300  Deschampsia cespitosa subsp. cespitosa Lowell Ahart 1997-8-1 7770 Butte about 8 air mi ne of Stirling City (about 1/4 mi e of Table Mountain, on bottom of Little Kimshew Creek, Snow Meadow); Snow Meadow, Little Kimshew Creek 1524 Comment
  CAS-BOT-BC192655  Deschampsia danthonioides Lowell Ahart 1982-6-15 3562 Butte Ca. 1.5 mi. E of Camp 18, ca. 8 mi E of Feather Falls 1000 Comment
  CHSC38806  Deschampsia danthonioides Vernon Oswald 1982-4-16 Butte Bidwell Park, Chico, ca. about 800 ft n of Upper Park Rd. on the e side of the intermittent stream which crosses Upper Park Rd. 2.9 mi e of its junction with Wildwood Ave. 134 Comment
  CHSC75428  Deschampsia danthonioides Jennifer Slater 1997-4-27 40 Butte At the Wurlitzer addition of the Vina Plains Preserve west of Highway 99, approx. 10 miles north of Chico. 67 Comment
  SEINET10524182  Deschampsia danthonioides Lowell Ahart 1982-1 Ahart 3398 Butte On dry soil in low area in a grassy field near dirt rd, ca. 3/4 mi w of check-in station, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. Common. 35 Comment
  CAS-BOT-BC201746  Deschampsia elongata E. B. Copeland 1929-7-16 335 Butte Jonesville 1500 Comment
  CHSC61655  Deschampsia elongata Lowell Ahart 1993-9-13 7233 Butte Along Bolt Creek, about 1 mile south-east of Butte Meadows. 1325 Comment
  POM365045  Deschampsia elongata L. Ahart, P. Ahart 1984-6-10 4700 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown 700 Comment
  SFV16942  Dianthus armeria subsp. armeria J. N. Hogue 1980-9-6 83 .6 Butte Sierra Nevada Toadtown, 4 miles west of Stirling City, along Little Butte Creek. 915 Comment
  CHSC638  Dicentra formosa P. Delaplane 1965-5-11 73 Butte Found ca 20 ft. from E side of rd. 2mi. E of Magalia off Skyway, N of Paradise Reservoir. 609 Comment
  SD8288  Dicentra formosa Daniel Cleveland 1882-7-14 Butte Sutton House Comment
  UC1362269  Dicentra formosa Kingsley R. Stern 1964-6-10 2104 Butte ca mi 11 mi e Chico e city limits (ca 2 mi s of Highway 32) Comment
  CAS-BOT-BC402381  Dicentra formosa subsp. formosa Lowell Ahart 1983-9-21 4465 Butte Near French Creek, about 2 miles north of the Sly Creek Dam, north of Strawberry Valley 900 Comment
  CAS-BOT-BC209182  Dichanthelium acuminatum subsp. acuminatum John Thomas Howell 1962-6-15 37510 Butte Magalia - Sierra Nevada 731 Comment
  SEINET10508816  Dichanthelium lanuginosum Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4726 Butte About 1 1/2 mile south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City. Comment
  SEINET10508817  Dichanthelium lanuginosum Mary Susan Taylor 1979-10-3 Taylor 2218 Butte T23N R3E center of E eighth of sec 33. Riparian Woodland in Butte Creek Canyon, ca. 1/4 mi upstream from bridge crossing Butte Creek at Helltown Road, ca. 7 mi E of Honey Run Covered Bridge. 244 Comment
  SEINET12047241  Dichelostemma capitatum W. A. Vaccaro 1976-1 2 Butte S side of Humbug Rd, 2.4 mi E of Centerville 128 Comment
  CHSC2096  Dichelostemma capitatum subsp. capitatum E. Canfield 1904-5-7 Butte Hooker Oak field. 76 Comment
  RSA725064  Dichelostemma multiflorum L. P. Janeway 2006-4-30 8572 Butte Cascade Range Foothills, E edge of City of Chico, NW side of Humboldt road 2.2km NE of Bruce Road. 146 Comment
  SEINET10472607  Dichelostemma pulchellum Mary Susan Taylor 1982-5-2 Taylor 4396 Butte T23N R5E ne/ne sec 6. Pulga Sw quad. Pulga serpentine outcrops on both sides of bridge across Hwy 70 at Pulga, ca. 20 mi ne of Oroville. 1600 ft. 488 Comment
  CHSC23664  Dichelostemma volubile M. S. Taylor 1976-4-26 1080 Butte Ca. 500 ft s of Bidwell Park Rd, ca. 1 mi w of Chico Municipal Golf Course, Upper Bidwell Park, Chico. 91 Comment
  CHSC59366  Dichelostemma volubile J. L. Guardino 1992-4-18 16 Butte Southern rim of Chico Creek Canyon, 1.7 mi e of Oak Hollow Ln. 268 Comment
  CAS-BOT-BC502518  Dichelostemma volubile A. A. Heller; H. E. Brown 1902-5-8 5499 Butte Berry Canyon (Near Clear Creek) Comment
  CAS-BOT-BC502525  Dichelostemma volubile H. C. Cantelow 1940-5-10 3911 Butte E of Oroville. Old road to Bucks Lake. Comment
  SEINET12046112  Dichelostemma volubile Unknown 1978-1 29 Butte on N side of Honey Run Rd, ca 5.5 mi E of Chico 76 Comment
  CAS-BOT-BC209034  Digitaria sanguinalis A. A. Heller 1914-6-2 11476 Butte Hills 8 miles north of Oroville. Comment
  CHSC69736  Digitaria sanguinalis Lowell Ahart 1997-10-24 7938 Butte About 20 yards north of the South Fork of the Feather River and on the west side of Sucker Creek, strand of Lake Oroville, about 1/4 mile west of the Ponderosa Dam. 274 Comment
  UC1037341  Digitaria sanguinalis E. Wilson 1934-9-3 71 Butte Biggs Rice Station Comment
  SEINET10560034  Digitaria sanguinalis Lowell Ahart 1982-8-22 Ahart 3745 Butte On damp sandy soil along edge of North Honcut Creek, Peter Ahart Ranch, 3 mi ne of Honcut. Foothill Woodland. 50 Comment
  CDA34289  Diospyros lotus L. Ahart 2010-6-12 16804 Butte At the old homestead, about 100 yards south of Ten Mile House Road, about 5/8 mile (air) west of Highway 32, and about 9 miles (air) northeast of Chico. Comment
  CHSC111119  Diospyros virginiana Lowell Ahart 2012-5-14 18048 Butte On the south bank of Big Chico Creek, north side of the paved road and Deer Pen, southeast of Table 9, Lower Bidwell Park, Chico. 71 Comment
  UCD170261  Diospyros virginiana var. virginiana D. O. Burge 2016-10-22 2184 Butte Helltown area, Butte Creek Canyon, roadside on Centerville Road. 260 Comment
  CAS-BOT-BC153763  Diplacus angustatus A. A. Heller 1915-4-12 11806 Butte Near Cohasset Comment
  CHSC24984  Diplacus angustatus D. M. Raimondi 1975-4-22 18 Butte 7 mi ne Chico on Cohasset Ridge. 304 Comment
  CAS-BOT-BC151925  Diplacus douglasii A. A. Heller 1938-3-13 15000 Butte Ten Mile House east of Chico 304 Comment
  CHSC44753  Diplacus douglasii R. Banchero 1980-3-9 59 Butte Ridge above Horseshoe Lake in upper Bidwell Park. 195 Comment
  CHSC44771  Diplacus grandiflorus R. Banchero 1980-6-19 258 Butte Along Concow Rd 4.95 mi N of its jct with Deadwood Rd, 5.8 mi N of the town of Concow. 646 Comment
  CHSC44810  Diplacus kelloggii R. Banchero 1980-4-13 113 Butte Along the bluffs 0.7 mi NW of the Covered Bridge, ca 6.8 mi E of Chico. 304 Comment
  CHSC90161  Diplacus kelloggii T. N. Casale 1974-4-22 22 Butte On shoulder of road, ca. 3.3 mi ne of Covered Bridge on Honey Run Rd. 188 Comment
  CHSC90254  Diplacus kelloggii Eric M. Haney 1989-4-21 6 Butte Found in Bidwell Park ca. 100 m e of Horseshoe Lake. Comment
  CAS-BOT-BC153210  Diplacus kelloggii Lowell Ahart 1969-4-8 s.n. Butte Swedes Flat Road, near Bangor 1200 Comment
  CAS-BOT-BC154030  Diplacus torreyi E. B. Copeland 1929-7-18 462 Butte Jonesville 1550 Comment
  CHSC34720  Diplacus torreyi M. S. Taylor; R. Bacigalupi 1981-4-27 3555 Butte Ridge between 21N33 and 21N80, ca. 1 mi sw of Bald Rock Rd, ca. 0.5 mi n of Zink Rd, ca. 2 mi sw of Brush Creek. 1005 Comment
  CAS-BOT-BC154167  Diplacus tricolor Lowell Ahart 1988-4-29 5969 Butte On the Joie Osgood Ranch, about 2 miles north and 2 1/2 miles east of Honcut, about 12 miles south-east of Oroville 76 Comment
  CHSC35076  Dipsacus fullonum N. Prouty; J. Prouty, R. A. Schlising 1981-10-4 4218 Butte 0.7 mi S of Nelson, between highway and Southern Pacific Railroad tracks. Comment
  SEINET10465020  Dipsacus fullonum Mary Susan Taylor 1982-10-11 Taylor 5164 Butte T20N R2E sw sec 33. Along the Midway near a slough just n of Nelson-Shippee Rd, ca. 0.7 mi s of Nelson. Comment
  CHSC2141  Distichlis spicata H. Silberman; D. Isaac 1949-9-19 Butte Grey Lodge State Game Refuge. Comment
  SEINET3450774  Distichlis spicata Lowell Ahart, Josephine Guardino, Steve Green 2003-5-27 10223 Butte Chico, Chico, about 3.5 miles east of Manzanita Avenue, about 100 yards west of the dirt road, west of Diversion Dam on Big Chico Creek, west of Parking area L, Upper Bidwell Park 120 Comment
  CDA31989  Dittrichia graveolens L. Ahart 2007-10-3 14506 Butte Both sides of Lower Wyandotte Road, about 2 1/2 miles (air) northeast of Palermo, about 4 1/4 miles (air) southeast of Oroville. Comment
  CAS-BOT-BC136238  Dodecatheon alpinum F. N. Bassett 1923-6-16 s.n. Butte Jonesville Comment
  SEINET10449637  Dodecatheon clevelandii subsp. patulum Mary Susan Taylor 1975-3-3 Taylor 392 Butte In field opposite Chico Municipal Airport, along Cohasset Rd, ca. 3 mi N of Chico. Associates: Layia fremontii, Lepidium nitidum, Brodiaea pulchella, Chlorogalum pomeridianum. 61 Comment
  CHSC1396  Dodecatheon hendersonii R. M. Staley 1953-8-6 Butte Rush Creek. Comment
  CHSC67291  Dodecatheon hendersonii James D. Jokerst 1984-3-20 1953 Butte Peter Ahart Ranch just W of the North Fork Honcut Creek. Adjacent to #1952. Comment
  SEINET10449643  Dodecatheon jeffreyi Mary Susan Taylor 1978-6-24 Taylor 1665 Butte Montane Meadow, on N side of Old Humboldt Road, across the road from Butte Meadows; Yellow Pine Forest. 1372 Comment
  UC775198  Dopatrium junceum Robert Hart Jul 1945 Butte near Biggs Comment
  CHSC51077  Downingia bacigalupii Pauleen Broyles 1987-7-19 1082 Butte Ca 7.2 km (air) NE of Inskip. 1750 Comment
  RSA212497  Downingia bacigalupii R. W. Summers 1892-05 s.n. Butte [No location data on label] Comment
  SEINET10458511  Downingia bella Lowell Ahart 1984-5-7 Ahart 4587 Butte T17N R4E. Peter Ahart Ranch, ca. 1.5 mi N and 0.5 mi E of Honcut, ca. 12 mi S of Oroville. Valley Grassland; 50 m. 50 Comment
  UCD55002  Downingia bicornuta R. N. Raynor; H. A. Hannesson 1941-5-9 s.n. Butte 4 mi. N of Gridley. 30 Comment
  POM68175  Downingia bicornuta C. C. Bruce 1897-04 1903 Butte [No location data on label] Comment
  CHSC181  Downingia insignis V. Holt 1935-5-15 Butte Oroville road. 76 Comment
  UC890894  Downingia montana A. A. Heller 1917-7-28 12843 Butte Butte Meadows 1280 Comment
  UC635661  Downingia ornatissima var. ornatissima Herbert L. Mason 1927-5-9 3708 Butte 15 mi w Oroville; Sacramento Valley Comment
  UC764554  Downingia ornatissima var. ornatissima R. F. Hoover 1936-5-21 1170 Butte 8 mi nw Chico Comment
  CHSC39776  Draba verna var. aestivalis David A. Durham 1978-3-22 10 Butte S slope of Butte Creek, near Covered Bridge on Honeyrun Road, 6.5 mi se of Skyway--Highway 99 Junction, at Chico. 137 Comment
  CHSC37097  Draperia systyla L. Ahart 1982-9-13 3820 Butte Near dirt rd by Pinkard Creek, ca. 1/8 mi n of Lost Creek Reservoir Dam, ca. 2.2 mi nw of Strawberry Valley. 1100 Comment
  CHSC94338  Drosera rotundifolia Lowell Ahart 2006-7-25 13065 Butte West part of a large meadow and bog, about 20 yard ... Field redacted by CHSC, contact the data manager for more information 1569 Comment
  UC114426  Drymocallis hansenii Mrs. R. M. Austin July, 1896 Butte Colby Comment
  CHSC86084  Dryopteris arguta R. D. Fischer; Paul Maslin 2003-12-24 19 Butte Sierra Nevada Range, off Hwy 32 between Chico and Forest Ranch. Located about 200 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
  CHSC90204  Dryopteris arguta Lowell Ahart 2005-1-20 11473 Butte On the west side of McCabe Creek, above the high water line of Lake Oroville, about 1/4 mile south of the siphon, about 3 miles (air) northeast of Hurleton, about 7 miles (air) east of Oroville Dam. 304 Comment
  CHSC5992  Duchesnea indica M. MacArthur 1968-6-12 162 Butte Near NW entrance to Life Science bld., Chico State College. 60 Comment
  CHSC35993  Dudleya cymosa J. D. Jokerst 1982-5-1 1557 Butte At Phantom Falls, S branch of Coal Cr. Canyon. North Table Mountain. 388 Comment
  CDA35633  Dudleya cymosa J. R. Keck Jr. 1981-5-13 PDR# 237678 Butte Oroville. 0 Comment
  CAS-BOT-BC428076  Dudleya cymosa subsp. cymosa Lewis S. Rose 1945-5-12 45017 Butte Richardson Springs 304 Comment
  CHSC41896  Dysphania ambrosioides Lowell Ahart 1974-12-5 682 Butte Near Pinkard Creek, along the dirt road, about 2 miles west of the Sly Creek Dam. 914 Comment
  CHSC97739  Dysphania ambrosioides Lowell Ahart 2007-11-3 14565 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
  JEPS121306  Dysphania pumilio Lowell Ahart 2013-11-29 19292 Butte Below the high water line of Lake Oroville, about 250 yards W of the old road, about 3.5 air miles NE of Oroville Dam. Comment
  JEPS124153  Dysphania pumilio Lowell Ahart 2015-11-7 20618 Butte About 1/4 mile south of the end of Alternate 40, Dark Canyon, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. Comment
  JEPS96001  Echinochloa crus-galli Vernon H. Oswald and Lowell Ahart 1996-5-27 7664 Butte U.S. Fish and Wildlife Service parcel between Seven Mile Lane and Sacramento River (on the s side of Tract 1.1, Sanctuary II); Sacramento River National Wildlife Refuge, Llano Seco Unit 33 Comment
  CAS-BOT-BC197250  Echinochloa muricata A. A. Heller 1914-5-19 11418 Butte 8 miles north of Oroville Comment
  SEINET10561343  Echinochloa muricata A. Arthur Heller 1914-5-19 Heller 11418 Butte Hills 8 miles north of Oroville. Comment
  CAS-BOT-BC208574  Echinochloa oryzoides Lowell Ahart 1974-11-9 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  CHSC31436  Eclipta prostrata L. Ahart 1980-9-28 2660 Butte Peter Ahart Ranch, ca. 2 mi n and 0.5 mi e of Honcut. 50 Comment
  CHSC111506  Elatine Lowell Ahart 2014-4-17 19379 Butte On dry black clay soil, bottom of a rice field, about 20 yards north of Faris Road, about 400 yards west of the grain bins, east of the deep ditch, about 2 1/4 miles southwest of Biggs. Agricultural. 24 Comment
  JEPS120760  Elatine ambigua Lowell Ahart 2013-9-20 19061 Butte About 100 yards west of the railroad, about 400 yards south of the Rice Experiment Station buildings, about 2 miles SE of Richvale. Comment
  CHSC40907  Elatine heterandra Lowell Ahart 1985-11-7 5231 Butte About 80 feet below the high water line of Lake Oroville, on the bottom of the South Fork of the Feather River, about 300 yards north-west of the Ponderosa Dam. 277 Comment
  CHSC11930  Eleocharis bella E. B. Copeland 1929-7-28 344 a Butte Jonesville. 1500 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
  UC398895  Eleocharis bella E. B. Copeland 1929-7-28 344 a Butte Jonesville 1500 Comment
  CHSC30956  Eleocharis engelmannii Lowell Ahart 1980-7-4 2465 Butte In a small meadow near the intersection of Forbestown Road and Black Bart Road, about 1 mile west of Robinson Mill Road. 670 Comment
  CHSC78290  Eleocharis macrostachya Lowell Ahart 2000-7-7 8556 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
  HSC97773  Eleocharis macrostachya L. Ahart 2000-5-21 8376 Butte Slickens from the Cherokee mine, E side of Clark Rd. (Hwy. 191), 200 yds. S of Dry Creek, 10 mi. NW of Oroville 61 Comment
  CHSC34136  Eleocharis obtusa L. Ahart 1981-9-19 3186 Butte On edge of small pond ca. 100 m n of Cresta Powerhouse, the pond is a little e of Feather River, along its banks, along Hwy 70, ca. 12 mi s of Storrie. 550 Comment
  CHSC76426  Eleocharis obtusa Lowell Ahart 1999-10-28 8304 Butte On the west side of a large pond, 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
  CDA2610  Eleocharis pachycarpa L. Ahart 2000-8-3 8676 Butte Southeast of a large pond, about 100 yards south of the Feather River, west of the break in the levee, about 1/2 mile (air) west of Pacific Heights Road, Oroville Wildlife Area, about 3 1/3 miles (air) southwest of Oroville. Comment
  CHSC78000  Eleocharis quinqueflora Lowell Ahart 2000-5-10 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. 36 Comment
  CHSC78307  Eleocharis quinqueflora 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
  CHSC78312  Eleocharis quinqueflora Lowell Ahart 2000-7-7 8559 Butte Seeps, on the north side of Lumpkin Ridge Road, upper west branch of Know-nothing Creek, about 1 mile southwest of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, about 4 miles (air) northeast of Feather Falls. 1219 Comment
  CDA38982  Eleocharis radicans L. Ahart 2000-9-2 8680 -A Butte About 4 miles (air) southwest of Oroville; about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area. Comment
  JEPS110325  Eleocharis suksdorfiana Lowell Ahart July 25, 2006 2006 13059 Butte 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. Comment
  SEINET10501556  Elodea canadensis Mary Susan Taylor 1979-11-11 Taylor 2278 Butte T20 N R1E. Ca. 6 mi S of Chico, on W side of Goodspeed-Watt Road. With Jim Jokerst. 34 Comment
  CHSC75434  Elymus caput-medusae Jennifer Slater 1997-4-20 30 Butte Upland area at the Wurlitzer addition of the Vina Plains Preserve, west of Highway 99, approx. 10 miles north of Chico. 67 Comment
  CHSC11974  Elymus elymoides subsp. californicus E. B. Copeland 1929-7-24 340 Butte Jonesville. 1575 Comment
  CHSC44919  Elymus glaucus subsp. jepsonii Lowell Ahart 1988-7-28 6136 Butte Hillside at the north side of the dam at Lost Creek Reservoir. 1036 Comment
  CDA13316  Elymus stebbinsii G. F. Hrusa, T. D. Wilfred 1996-7-9 13162 Butte Sierra Nevada; Dry, sunny, sandy bank on USFS N60 approx. immed. E of bridge over Marble Creek. Steep, dry rocky area, slopes near vertical. Perennial, uncommon here. Comment
  CHSC82474  Elymus stebbinsii subsp. septentrionalis Lowell Ahart; John Dittes, Josephine Guardino 2002-6-21 9738 Butte On the sides of a poor dirt road, Watson Ridge, about 2 miles (air) northeast of Bald Rock Dome, about 5 miles (air) north of Feather Falls (the town). Comment
  CHSC1468  Enemion occidentale R. Calkins 1931-3-3 Butte Little Chico Creek. Comment
  CHSC43100  Epilobium brachycarpum Pauleen Broyles 1987-10-26 1088 Butte Wurlitzer Addition to Vina Plains Preserve. In area of Singer Creek. 55 Comment
  SEINET6635763 Image available Epilobium brachycarpum A. A. Heller 1916-9-5 12648 Butte 8 mi N of Oroville Comment
  CDA42894  Epilobium campestre L. Ahart 2012-6-5 18166 Butte On the strand of the reservoir, north of Beatson Hollow, about 1 3/4 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. Comment
  CHSC111964  Epilobium campestre Lowell Ahart 2012-6-5 18166 Butte On the strand of the reservoir, north of Beatson Hollow, about 1-3/4 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. 295 Comment
  CHSC13471  Epilobium canum subsp. latifolium J. R. Birmingham 1972-4-5 7 Butte Against cliff, ca. 1000 yds. se of Municipal Golf Building, Chico. 182 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
  UCD105782  Epilobium ciliatum subsp. ciliatum L. E. Hazeltine 1916-7-19 s.n. Butte Chico. Comment
  CHSC105515  Epilobium ciliatum subsp. glandulosum Lowell Ahart 2010-9-28 17248 Butte On damp rocky soil, along west side of Big Kimshew Creek, about 100 yards east of the poor dirt road, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrood Reservoir. 1886 Comment
  CDA42891  Epilobium cleistogamum L. Ahart 2012-6-4 18154 Butte Peter Ahart Ranch, about 2 1/4 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. Comment
  CHSC111605  Epilobium densiflorum Lowell Ahart 2012-8-12 18418 Butte The south edge of North Honcut Creek, about 3/4 mile north and 2 1/2 miles east of Honcut, about 13 miles southeast of Oroville. 39 Comment
  JEPS119817  Epilobium densiflorum Lowell Ahart 2012-8-12 18418 Butte On the south edge of North Honcut Creek, about 3/4 mile north and 2 1/2 miles east of Honcut, about 13 miles southeast of Oroville. Comment
  RSA0117083  Epilobium densiflorum Lowell A. Ahart 2015-6-6 20203 Butte About 20 yards north of the dirt road, about 5/8 mile northwest of the iron gate along Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north of Oroville. 305 Comment
  UC873375  Epilobium glaberrimum subsp. glaberrimum A. A. Heller 1914-7-23 11601 Butte Chico meadows 1219 Comment
  CHSC46571  Epilobium hallianum Vernon H. Oswald 1989-7-18 3866 Butte Jonesville Rd between Humboldt and Humbug roads, just se of where the road crosses Scotts John Creek. In a meadow on the north side of the road. 1737 Comment
  POM184018  Epilobium lactiflorum H. F. Copeland 1932-08 s.n. Butte Butte County: In Springs near Crest of ridge SE of the head of Butte Creek. 2000 Comment
  UCD169262  Epilobium pallidum Lowell Ahart 2012-5-31 18124 Butte About half way between Salmon Hole trail and Parking Area O, Upper Bidwell Park. 121 Comment
  UCD106907  Epilobium torreyi H. A. Hannesson; R. N. Raynor 1941-5-9 s.n. Butte 4 miles S of Oroville. Comment
  CAS-BOT-BC56941  Equisetum arvense Alice Eastwood 1912-6-15 s.n. Butte Deer Park, Lake Tahoe Region Comment
  CHSC24862  Equisetum hyemale E. Rilla 1976-4-4 9 Butte Ca. 100 yds w of Butte Creek, ca. 3 ft w of Old Humboldt Rd, ca. 2 mi e of Butte Meadows. 1463 Comment
  JEPS120178  Equisetum hyemale subsp. affine Lowell Ahart 2012-7-5 18276 Butte On the south edge of Big Chico Creek, at Table 11, east of the Deer Pen, Lower Bidwell Park, Chico. Comment
  JEPS120949  Equisetum laevigatum Lowell Ahart 2013-4-20 18551 Butte Wilson Creek, about 100 yards SW of the oak trees, about 1/2 mile N of the barn, about 3/4 mile N of the Honcut Cemetery, about 3.75 air miles NE of Honcut. Comment
  CHSC35321  Equisetum telmateia subsp. braunii M. S. Taylor; K. Tharp 1982-4-8 4288 Butte Along both sides of Oroville Dam Blvd, ca. 1.5 mi s of Oroville Dam Visitor's Center, Oroville. 243 Comment
  CHSC49237  Eragrostis cilianensis Vernon Oswald 1987-7-6 3095 Butte Butte Creek Preserve on the s side of Butte Creek ca. 0.25 mi e of the Hwy 99 bridge. 67 Comment
  CHSC34778  Eragrostis mexicana subsp. virescens L. Ahart 1981-11-6 3229 Butte Ca. 1/8 mi e of Gridley Bridge across the Feather River, ca. 2 mi w of Hwy 70, ca. 4 mi e of Gridley. Along edge of the road. 35 Comment
  CHSC97418  Eragrostis pectinacea var. pectinacea Robert Fischer 2006-6-18 1022 Butte Chico. Within upper Bidwell Park in the City of Chico. 60 Comment
  HSC97053  Eragrostis pectinacea var. pectinacea L. Ahart 2004-9-14 11402 Butte E side of Palermo Honcut Hwy., about 20 ft. S of Palermo Rd., E part of Palermo. 58 Comment
  CAS-BOT-BC278510  Eragrostis pilosa var. pilosa Lowell Ahart 1974-10-20 s.n. Butte Peter Ahart Ranch. Honcut 45 Comment
  UCD65676  Eragrostis pilosa var. pilosa L. Ahart 1977-8-14 1552 Butte Peter Ahart Ranch, Honcut. Valley Grassland. 15 Comment
  CHSC44114  Eremogone cliftonii L. P. Janeway 1987-5-28 2111 Butte Side rd (23N12Y) 0.6 mi from Four Trees Rd (1.6 mi W of OroQuincy Hwy.). 1463 Comment
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Jul 8 2014
  LA203671  Ericameria bloomeri E. B. Copeland; 1930-8-26 493 Butte Jonesville 1550.0 Comment
  CHSC28381  Ericameria nauseosa var. speciosa J. D. Jokerst; M. S. Taylor 1979-10-13 390 Butte Jordan Hill RD. (Ponderosa Way) 2.8 mi. N. of junction with Concow Cr. 609 Comment
  CHSC110404  Erigeron canadensis Lowell Ahart 2012-9-28 18456 Butte Restoration area, south of Vallombrosa Avenue, north of Sycamore Pool in Big Chico Creek, Lower Bidwell Park, Chico. 62 Comment
  CHSC62426  Erigeron canadensis L. P. Janeway 1993-9-7 4586 Butte Plumas National Forest. About 300 ft west of the south end of Ponderosa Dam. Along dirt road. 298 Comment
  CHSC42467  Erigeron divergens Lowell Ahart 1987-5-6 5499 Butte Along the North Fork of the Feather River, near Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC58251  Erigeron divergens Lowell Ahart 1992-5-9 6757 Butte Along the dirt road, on the north side of the Thermalito Diversion Pool, Lake Oroville Recreation Area, about 2 1/2 miles west of Oroville Dam. 76 Comment
  CAS-BOT-BC300616  Erigeron foliosus var. hartwegii A. A. Heller 1940-6-5 15700 Butte Feather River Highway between the bridge crossing and the mouth of the West Branch Comment
  CHSC11839  Erigeron glacialis var. glacialis E. B. Copeland 1930-7-12 491 Butte Above Jonesville. 1800 Comment
  CHSC88077  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. Located on canyon edge of Humboldt Trail n. of Bloody Pin Trail junction. UTM: 10609319E 4405116N. 411 Comment
  UC127750  Erigeron inornatus var. inornatus Miss Kate Conger 1907-1-1 Butte Brush Creek Comment
  SEINET10474628  Erigeron lassenianus Mary Susan Taylor, Lowell Ahart 1981-8-16 Taylor 4211 a Butte T25N R5E ne 1/4 sw 1/4 sec 29. Pulga NW quad. N. side of rd 25N04, ca. 0.5 mi E of its jct with 52S13 ca. 1 mi NE of Jones Mdw. ca. 6 mi NE of Stirling City. 6200 ft. 1890 Comment
  CHSC67339  Erigeron petrophilus var. sierrensis J. D. Jokerst 1984-8-15 2147 Butte Along edge of Pulga Road within 100 meters of its junction with Highway 70. Canyon of the North Fork of the Feather River. Comment
  JEPS95007  Erigeron petrophilus var. sierrensis Lowell Ahart 1997-9-6 7889 Butte about 2 air mi ne of Concow Reservoir (near the McNab Cypress Grove, near the steel power line, along sides of logging road, about 1/4 mi w of Rim Road) 731 Comment
  CAS-BOT-BC295951  Erigeron philadelphicus Lowell Ahart 1987-6-9 5741 Butte On the west side of the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC116319  Eriochloa acuminata var. acuminata Lowell Ahart 2015-11-18 20651 Butte In crack between building and pavement, building of Casey's Auto Repair, east of the intersection of Spruce Street and Washington Street, Gridley. 27 Comment
  POM73515  Eriodictyon californicum C. C. Bruce 1897-05 1811 Butte Butte Creek. Comment
  CDA13260  Eriogonum luteolum var. luteolum G. F. Hrusa, T. D. Wilfred 1996-7-8 13104 Butte Sierra Nevada; Corner of Skyway Rd. and Rd. to Paradise Lake, at N boundary of Magalia. Comment
  CHSC39078  Eriogonum marifolium var. marifolium R. A. Schlising; K. Tarp 1983-8-12 4442 Butte N part of county, NE of Philbrook Reservoir on road to Carr Mine; 1.2 mile W of Plumas County line. 1981 Comment
  RSA781347  Eriogonum nudum var. deductum Anna Kostikova, Glenn Litsios, Sarah Burgy 2010-7-1 151 Butte Humboldt road. Comment
  RSA719711  Eriogonum nudum var. nudum Michael A. Vincent, K. Levings 2006-7-29 12890 Butte Northeast of Chico along Rt. 32 Comment
  RSA0081667  Eriogonum nudum var. oblongifolium L. 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 0.25 air miles northwest of the Ponderosa Dam. 243 Comment
  CHSC39138  Eriogonum nudum var. pubiflorum R. A. Schlising 1981-6-11 4137 Butte Plumas National Forest; serpentine outcrop along Coyote Gap Road, ca. 0.5 mi s of Coyote Gap. 1219 Comment
  CHSC45489  Eriogonum roseum Lowell Ahart 1977-10-19 1603 Butte Near North Honcut Creek, Peter Ahart Ranch, about 3/4 mile north and 2 1/2 miles east of Honcut, about 12 miles south of Oroville. 42 Comment
  RSA718043  Eriogonum roseum R. D. Fischer 2005-9-14 857 Butte Northern Sacramento Valley, Chico. Plants collected at the end of Arbutus Street along the western bank of Lindo Channel. Common in area. 610 Comment
  CAS-BOT-BC253051  Eriogonum roseum Lowell Ahart 1989-7-4 6366 Butte On and around graves in the Cementery about 1/2 mile south of Oregon Gulch Road about 1 mile west of Rocky Point, about 10 miles east and 3 miles north of Oroville 335 Comment
  CAS-BOT-BC268615  Eriogonum spergulinum var. reddingianum E. B. Copeland 1931-7-11 s.n. Butte Jonesville. Ridge between Jones and North Willow Creeks 1700 Comment
  SBBG28234  Eriogonum spergulinum var. reddingianum E. B. Copeland 1931-7-11 Butte Jonesville, between Jones and North Willow Crks 1700 Comment
  CHSC107894  Eriogonum umbellatum var. ahartii L. P. Janeway; B. Castro 2011-9-11 10717 Butte Northern High Sierra Nevada. North edge of Lumpkin Ridge; north side of Lumpkin Road about 0.6-1.2 km east of 'Camp 18'. Large basalt opening. 1288 Comment
  HSC96691  Eriogonum umbellatum var. ahartii L. P. Janeway 2006-7-11 8813 Butte N high Sierra Nevada, high in canyon of N Fork Feather River, along Hwy. 70, 0.5 km. NW of Bardee's Bar 579 Comment
  CAS-BOT-BC268237  Eriogonum umbellatum var. nevadense A. A. Heller 1917-7-29 12854 Butte Summit above Jonesville 2133 Comment
  SEINET10479576  Eriogonum ursinum Mary Susan Taylor 1980-7-6 Taylor 3075 Butte T25N R3E ne sec 11, Butte Meadows quad; on S side of Old Humboldt Rd, on rocky slope beneath power lines, ca. 0.9 mi W of Butte Meadows Forestry Station. With R.A. Schlising. 1341 Comment
  SEINET10937607  Eriogonum wrightii subsp. trachygonum Mary Susan Taylor 1979-11-15 Taylor 2286 Butte Peter Ahart Ranch, Honcut. With Jim Jokerst & Lowell Ahart. 46 Comment
  SEINET10474637  Eriophyllum lanatum Mary Susan Taylor 1975-4-11 Taylor 394 Butte Ca. 1/4 mi E of Salmon Hole, between Chico Creek and Upper Bidwell Park Rd, Upper Bidwell Park, Chico. Associates: Quercus spp., Pinus sabiniana, Galium aparine, Brodiaea hyacinthina. Foothill Woodland. 183 Comment
  CHSC38069  Eriophyllum lanatum var. croceum R. E. Preston 1982-6-25 316 Butte Edge of meadow; site of Powellton. 1108 Comment
  UC194735  Eriophyllum lanatum var. grandiflorum A. A. Heller 1902-5-16 Butte slope of East Butte; Marysville Buttes, East Butte Comment
  CDA42858  Erodium brachycarpum L. Ahart 2012-5-1 17998 Butte On the east side of the horse path, about 100 yards north of the paved park road, west side of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  CHSC44508  Erodium cicutarium Lowell Ahart 1988-3-27 5933 Butte Along the dirt road, west of the Poe Power House, east of the North Fork of the Feather River, about 2 miles south-east of Jarbo Gap. 274 Comment
  CHSC52400  Erodium moschatum Rod Robertson 1979-3-20 10 Butte 10 ft S of Humbug Rd, 100 ft W of Honey Run Rd, 4.3 mi E of Skyway. 85 Comment
  SEINET10495114  Erodium moschatum Mary Susan Taylor 1975-3-25 Taylor 420 Butte Chico. Comment
  SEINET10903101  Erodium obtusiplicatum Mary Susan Taylor 1973-1 Taylor 53 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  UCD114817  Eruca vesicaria subsp. sativa A. A. Heller 1914-7-11 11560 Butte Chico-Hamilton road 6 miles from Chico. Comment
  UCD127480  Eryngium articulatum Herbert L. Mason; Verne Grant 1946-9-4 13103 Butte Colusa Gun Club. Comment
  SBBG27232  Eryngium castrense L. S. Rose 1939-6-5 39198 Butte Honcut 30 Comment
  POM219573  Eryngium castrense H. F. Copeland 1923-7-9 34 Butte Mud Creek Ranch Comment
  CHSC27980  Erysimum capitatum var. capitatum M. S. Taylor 1978-7-18 1712 Butte On e side of Humboldt Peak, at Humboldt Summit. 2133 Comment
  CHSC29240  Erythranthe bicolor M. S. Taylor 1980-5-8 2590 Butte Ca. 3 mi n of Forest Ranch, ca. 1 mi e of Hwy 32. 853 Comment
  CHSC107599  Erythranthe breweri Lowell Ahart 2011-7-9 17562 Butte Open 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
  CHSC44822  Erythranthe glaucescens R. Banchero 1980-4-26 130 Butte Along the Cohasset Hwy 4.9 mi NE of its jct with Keefer Rd, 1.3 mi SW of the town of Cohasset. 445 Comment
  CHSC87424  Erythranthe glaucescens R. D. Fischer 2004-3-20 114 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Along drainage on Guardian Trail. UTM: 10609595E 4405947N. 384 Comment
  CHSC48998  Erythranthe guttata Vernon Oswald 1987-5-12 2394 Butte Butte Creek Reserve on the s side of Butte Creek, n of the Skyway, between Crouch Ditch dam and the double set of transmission lines. 80 Comment
  SD4699  Erythranthe guttata E. B. Copeland 1929-7-28 464 Butte Jonesville, in a cold stream 1500 Comment
  CHSC43761  Erythranthe lewisii Vernon Oswald 1987-6-29 3034 Butte Jones Meadow Rd. e of Inskip at Last Chance Creek. 1560 Comment
  CHSC11894  Erythranthe primuloides E. B. Copeland 1930-7-15 460 A Butte Jonesville. 1500 Comment
  CHSC50845  Erythranthe tilingii Vernon H. Oswald; Lowell Ahart 1990-7-19 4376 Butte Slope on the south side of Philbrook Creek, ca. 3 mi east of Philbrook Reservoir, ca. 0.4 mi west of the Plumas County line. 1920 Comment
  CHSC88617  Erythronium multiscapideum Linnea Hanson 1983-4-6 190 Butte Plumas National Forest. Magalia Serpentine. 701 Comment
  CHSC9284  Erythronium multiscapideum D. C. Burns 1971-4-2 110 Butte Abundant along s side of Cohasset rd., ca. 2.8 mi w of intersection of Cohasset rd. and Vilas rd. 457 Comment
  SEINET12054425  Erythronium multiscapideum Unknown 1890-1 s.n. Butte no further locality Comment
  SEINET8477399  Erythronium multiscapideum M. J. Williams 1967-4-15 s.n. Butte Near Magalia. 610 Comment
  HSC32620  Eschscholzia caespitosa Kitsy Kelly 1974-4-20 23 Butte Table Mtn. Volcanic area Comment
  CHSC1193  Eschscholzia lobbii S. Cater 1929-3-24 Butte Richardson Springs road. 121 Comment
  UC176651  Eschscholzia lobbii A. A. Heller 1913-4-6 10714 Butte near Big Chico Creek (e of Chico) Comment
  CHSC47044  Euonymus occidentalis R. A. Schlising 1986-7-18 4490 Butte NE of village of Feather Falls, on road to Fall River Campground. At roadside spring. 1158 Comment
  JEPS122254  Euphorbia maculata Lowell Ahart 2014-9-23 19879 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
  CDA19192  Euphorbia oblongata L. Pejsa 2001-5-16 PDR P 073954 Butte Sacramento Valley; at 2760 Mariposa, Chico. 0 Comment
  CAS-BOT-BC202423  Euphorbia ocellata A. A. Heller 1939-9-18 15481 Butte Neal Road to Paradise 1 mile above the Oroville road junction Comment
  JEPS122247  Euphorbia ocellata subsp. ocellata Lowell Ahart 2014-9-23 19878 Butte About 30 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. Comment
  SEINET12143834  Euphorbia serpillifolia Unknown 1984-1 4785 Butte W of Pacific Heights Road, ca 5 mi SW of Oroville 40 Comment
  CHSC50815  Eurybia integrifolia Vernon Oswald; Lowell Ahart 1990-7-19 4363 Butte Slope on the south side of Philbrook Creek, ca. 3 mi east of Philbrook Reservoir, ca. 0.2 mi west of the Plumas County line. 1981 Comment
  CHSC51352  Eurybia integrifolia Vernon Oswald 1990-7-28 4403 Butte Butte Creek Trail, ca. 2.2 mi (air) east of Forest Ranch. 533 Comment
  JEPS119859  Festuca arundinacea Lowell Ahart, Susan Bazell, Josephine Guardino 2012-5-31 18117 Butte On the north side of the paved park road (Peterson Drive) about 300 yards west of the gate, Lower Bidwell Park, Chico. Comment
  JEPS120010  Festuca bromoides Lowell Ahart, Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17906 Butte Southwest of the intersection of Valllombrosa Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC278270  Festuca californica Lowell Ahart 1984-6-10 4701 Butte Along the road about 2 miles south-west of the Forbestown Diversion Dam, north-east of Forbestown 700 Comment
  CAS-BOT-BC278301  Festuca californica subsp. californica V. Oswald; L. Ahart 1988-6-17 3398 Butte North side of the dam at Lost Creek Reservoir 1005 Comment
  CHSC94294  Festuca occidentalis Lowell Ahart 2006-7-16 12958 Butte East of the open mudflow area, about 50 yards south of Humboldt Road, about 1 1/2 miles (air) southwest of Butte Meadows. 1435 Comment
  SEINET10507961  Festuca occidentalis Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4165 Butte T21N R6E ne sec 29. Along sides of Bean Creek Rd, ca. 0.5 mi s of Little Bald Rock, ca. 19 mi ne of Oroville. Yellow Pine Forest; 1000 m. 1000 Comment
  CHSC98943  Festuca subulata Lowell Ahart 2008-6-2 14807 Butte Shaded road cut, on the south side of Ponderosa Way, about 1 mile (air) southwest of the Ponderosa Dam, about 2 1/4 miles (air) northwest of Forbestown. 670 Comment
  CHSC97181  Festuca subuliflora Lowell Ahart 2007-5-22 13915 Butte About 1/8 mile south of Bald Rock Dome, on the west side of Dome Trail, trail leads to the Middle Fork of the Feather River, about 200 yards northeast of 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
  SEINET10662360  Festuca subuliflora Lowell Ahart 2007-5-22 Ahart 13915 Butte T21N, R6E, Section 28. About 1/8 miles south of Bald Rock Dome, around a small stream along the Dome Trail, trail leads to the Middle Fork of the Feather River, about a mile 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. 844 Comment
  UC1609158  Festuca subuliflora Vernon H. Oswald and Lowell Ahart 1993-6-22 5563 Butte 0.25 mi s Diversion Dam (w of Stirling City, Long Ravine, along Hendricks Canal); Hendricks Canal, Long Ravine 950 Comment
  CHSC38556  Ficus carica Vernon Oswald 1983-3-31 249 Butte Upper Bidwell Park, Chico, beside the trail near Chico Creek near the power lines. 91 Comment
  CHSC50553  Floerkea proserpinacoides Vernon Oswald; Lowell Ahart 1990-7-5 4352 Butte Headwaters of Willow Creek, 0.7 mi (odometer) west of Humbug Rd along a logging road just south of Cold Springs (near Humbug Summit), ca. 4 mi east of Jonesville. 1950 Comment
  CAS-BOT-BC62943  Frangula californica subsp. tomentella A. A. Heller 1915-5-17 11881 Butte Canyon of Chico creek 5 mi. e. of Chico. This type was collected about 50 mi. to the s., probably along the Bear River. Comment
  CAS-BOT-BC62949  Frangula californica subsp. tomentella John Thomas Howell 1962-6-15 37441 Butte Magalia. 731 Comment
  CAS-BOT-BC55785  Frangula rubra subsp. yosemitana C. R. Quick 1941-6-8 41 -09 Butte About 2 miles S. of Big Bar. Mt. Comment
  CAS-BOT-BC223387  Fraxinus dipetala A. A. Heller 1914-5-18 11405 Butte Between Chico and Forest Ranch, 14 miles from Chico 731 Comment
  CDA38769  Fraxinus dipetala L. Ahart 2012-4-2 17896 Butte On the west side of South Rim Trail, about 5/8 mile west of Highway 32, about 8 1/2 mile northeast of Chico, south part of Upper Bidwell Park. Comment
  HSC102799  Fraxinus dipetala L. Ahart 2012-4-20 17896 Butte About 8.5 mi. NE of Chico, south part of Upper Bidwell Park; ~0.6 mi. west of Hwy. 32, west side of South Rim Trail 255 Comment
  CAS-BOT-BC504378  Fritillaria Saichi Kawaha 1968-5-4 388 Butte James Ripley's property, graham Road, Paradise 640 Comment
  CAS-BOT-BC130317  Fritillaria eastwoodiae A. A. Heller 1938-5-1 15058 Butte Above the reservoir beyond Magalia on Highway Comment
  CHSC2280  Fritillaria eastwoodiae N. Maxwell 1929-4-8 Butte Honey Run. 243 Comment
  CAS-BOT-BC124015  Fritillaria eximia Mrs. J. H. Morrison 1932-3-20 s.n. Butte On the Pence grade, east of Paradise Comment
  CHSC37264  Galium aparine L. Ahart 1982-6-15 3569 Butte Ca. 1.5 mi E of Camp 18, ca. 8 mi E of Feather Falls. 1000 Comment
  CHSC42432  Galium aparine Lowell Ahart 1987-5-9 5579 Butte Along Pulga Road, about 1/4 mile west of Bardees Bar along the North Fork of the Feather River, about 2 1/2 miles south-west of Pulga. 365 Comment
  CDA13230  Galium bolanderi G. F. Hrusa, T. D. Wilfred 1996-7-8 13077 Butte Plumas National Forest; Old Railroad Grade Rd. immed. above Paradise Lake dam, approx. 3 mi. N of Magalia. Comment
  CHSC11821  Galium bolanderi E. B. Copeland 1930-7-25 474 Butte Jonesville. 1700 Comment
  JEPS121970  Galium bolanderi Lowell Ahart 2014-7-7 19569 Butte Along the east side of the Skyway, about one-mile south of Inskip. Comment
  CHSC46406  Galium divaricatum Lowell Ahart 1989-5-28 6296 Butte About 1/2 mi north of the Cemetery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. 335 Comment
  CHSC111972  Galium parisiense Lowell Ahart 2012-6-2 18144 Butte South edge of Truex Road and Trevor Road, about 1/8 mile northwest of the West Branch Bridge across Lake Oroville. 306 Comment
  CHSC116994  Galium parisiense Lowell Ahart 2016-6-4 20925 Butte On the north side of Lumpkin Road, about 100 yards north of McCabe Creek, about 3 miles (air) west of Forbestown. 387 Comment
  UCD121849  Galium parisiense L. Ahart 1982-5-29 3446 Butte Peter Ahart Ranch, ca. 2.3 mi ne of Honcut. 50 Comment
  UC1143092  Galium porrigens C. G. Albertus 1933-6-6 23 Butte 1/4 mi w Pentz; Chico Quadrangle 137 Comment
  UC1562385  Galium trifidum var. pacificum Lowell Ahart 1990-7-15 6554 Butte w Enterprise Boat Launch area (below high-water line of lake, about 1/2 mi nw of the Enterprise Bridge across lake, n side of old paved road to Feather Falls); Lake Oroville 268 Comment
  CHSC112438  Gamochaeta ustulata Lowell Ahart 2013-5-31 18718 Butte Garden, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles southeast of Oroville. 33 Comment
  JEPS126557  Gamochaeta ustulata Lowell Ahart 2016-5-25 20878 Butte About 200 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. Comment
  CHSC65212  Gastridium phleoides Lowell Ahart 1995-5-30 7584 Butte Along the edge of the dirt road, south of Beatson Hollow, about 1/8 mile north of Cherokee Road, North Table Mountain, about 7 miles north of Oroville. 335 Comment
  JEPS110117  Gastridium ventricosum Lowell Ahart 2006-5-8 12611 Butte Grassy slope, 100 yards west of a small stream, northeast of Phantom Falls, about 1/2 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 378 Comment
  JEPS110208  Gayophytum heterozygum Lowell Ahart 2006-7-16 13004 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
  SD7787  Gayophytum heterozygum Daniel Cleveland 1882-8-4 Butte West Branch. Comment
  UC107803  Gayophytum heterozygum D. Cleveland 1882-8-4 Butte West Branch 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
  CHSC46708  Gayophytum humile V. Oswald; L. Ahart 1989-8-22 3955 Butte Butte Creek House Meadow on the e side of Humbug Rd, ca. 3.5 mi (air) se of Jonesville. Along the creek. 1767 Comment
  CHSC60998  Gayophytum humile Lowell Ahart 1993-6-26 7033 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  CHSC81038  Gayophytum racemosum Vernon H. Oswald 2001-7-16 10051 Butte Butte Creek House Ecological Reserve east-southeast of Jonesville. 1775 Comment
  CHSC94246  Gayophytum racemosum Lowell Ahart 2006-7-16 13005 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
  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
  CHSC103656  Genista monspessulana Lowell Ahart 2010-4-9 16577 Butte Along the northwest side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. 38 Comment
  CHSC3194  Genista monspessulana Dona Kingsford 1966-3-31 Butte 1.2 miles from 4th. Street entrance of Bidwell Park. Comment
  UC1564769  Gentiana newberryi V. Oswald and L. Ahart 1989-8-22 3956 Butte 3.5 mi (air) se Jonesville (on the e side of Humbug Rd, Butte Creek House Meadow) 1767 Comment
  CHSC11983  Gentianella amarella subsp. acuta E. B. Copeland 1930-8-4 441 Butte Jonesville. 1500 Comment
  CHSC61476  Geranium carolinianum Vernon H. Oswald 1993-5-18 5398 .1 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
  SBBG17317  Geranium carolinianum M. Vincent 1962-4-15 171 Butte intersection of Bernum and Pentz Rds Comment
  SEINET10495122  Geranium dissectum Mary Susan Taylor 1979-5-6 Taylor 1993 A Butte Peter & Lowel Ahart Ranch, Honcut; Valley Grassland. Comment
  CHSC23642  Geranium molle M. S. Taylor 1976-3-30 1039 Butte On s side of Cherokee Rd, ca. 1 mi s of Cherokee, on n side of Table Mountain. 304 Comment
  CHSC39648  Geranium molle Lowell Ahart 1983-4-10 3926 Butte On steep sidehill, about 1 1/2 miles north-east of Highway 99 and Pentz Road. 100 Comment
  SEINET10495128  Geranium molle Lowell Ahart 1983-4-10 Ahart 3926 Butte S of a large wash, 1/10 mi e of the large barn, ca. 1.4 mi ne of Hwy 99 and Pentz Rd jct, ca. 16 mi s of Chico. Valley Grassland; 65 m. 65 Comment
  CHSC110104  Geranium purpureum L. P. Janeway 2012-5-29 10827 Butte Northern High Sierra Nevada. Plumas National Forest; along Ponderosa Way 4.3 road km north of Lower Forbestown Road; 1.4 air km south of the Ponderosa Reservoir dam. 485 Comment
  RSA754864  Geranium purpureum L. Ahart, Lawrence Janeway, Linnea Hanson 2008-5-27 14790 Butte S side of Ponderosa Way, about 1 air mile SW of the Ponderosa Dam, about 2.25 air miles NW of Forbestown. 671 Comment
  CHSC42790  Geum macrophyllum L. P. Janeway 1987-6-26 2318 Butte SW end of Logue Meadows. 1325 Comment
  CHSC64212  Geum macrophyllum S. C. Morey 1983-7-23 585 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC36812  Gilia capitata subsp. mediomontana L. Ahart 1982-6-4 3555 Butte On a lava cap, 1.5 mi e of Camp 18 and ca. 8 mi e of Feather Falls. 1000 Comment
  CHSC102506  Gilia capitata subsp. pedemontana Lowell Ahart 2009-5-30 15784 Butte North of a broad open drainage in oak woodland, about 100 yards north of the dirt road which is Ten mile House Road, Upper Bidwell Park, about 1/2mile (air) west Highway 32, about 10 miles northeast of Chico. 269 Comment
  CHSC41374  Gilia capitata subsp. pedemontana R. A. Schlising; R. Banchero 1981-4-17 4038 Butte NW of Bangor in S part of county; 1.3 mile S of junction Grubbs and Dunstone Roads, along latter, roadside. Comment
  SEINET12319534  Gilia tricolor J. Rodriguez, Rodriguez, J. 1978-1 18 Butte ca 200 yds NE of Big Chico Creek, ca 2 mi NE of Horseshoe Lake, 5.4 mi NE of Hwy 99, Chico 131 Comment
  CHSC90094  Gilia tricolor subsp. tricolor Elizabeth A. Ballou 1991-3-12 12 Butte About 40 m south of Butte Creek and 0.3 km west of Covered Bridge, 10.2 km east-southeast of Chico. 120 Comment
  CAS-BOT-BC266582  Githopsis pulchella A. A. Heller; H. E. Brown 1902-5-14 5548 Butte Berry Canyon [Near Clear Creek] Comment
  SEINET10873414  Githopsis pulchella subsp. campestris A. Arthur Heller, H. E. Brown 1902-5-14 Heller 5548 Butte Berry Canyon, near Clear Creek Comment
  CHSC62541  Githopsis specularioides B. Castro 1993-6-3 464 b Butte Ca 2.5 mi NE of Concow Lake, ca 30 ft E of large bend in Concow Road, 883 Comment
  CHSC90983  Githopsis specularioides Lowell Ahart 2005-5-11 11799 Butte On the bottom of a small vernal pool, south part of North Table Mountain, about 300 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. 354 Comment
  RSA21308  Githopsis specularioides C. B. Wolf 1937-5-12 8653 Butte West side of So. Honcut Creek, 2.6 miles E of Bangor; Sierra Nevada Foothills. 213 Comment
  UCD85131  Glyceria elata Robert E. Preston 1982-7-16 333 Butte ca. 1/2 mi. SW of Crane Valley. At margin of stream. 1554 Comment
  CHSC78959  Glyceria occidentalis Lowell Ahart 2000-10-21 8713 Butte About 100 feet north of Hmilton Road, about 1/8 mile east of Riceton Road, Rice Experiment Station northwest of Biggs, 2 1/4 miles (air) north of Biggs. 30 Comment
  SEINET10904836  Gnaphalium luteoalbum Mary Susan Taylor 1977-10-10 Taylor 1529 Butte Ca. 1 mi E of junction of Nelson West Road and Chico-Butte Hwy, on N side of Nelson West Road in large creek (drying area), ca. 23 mi S of Chico. 30 Comment
  CAS-BOT-BC302468  Gnaphalium palustre A. A. Heller 1915-5-28 11911 Butte Near Cohasset Comment
  CHSC113474  Gnaphalium palustre Lowell Ahart 2014-7-10 19626 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CHSC69038  Gnaphalium palustre Lowell Ahart 1997-8-1 7798 Butte Along the edge of the dirt road and north of the camps along Little Kimshew Creek, about 1/4 mile north of the County Road, east of Bald Mountain, about 8 miles (air) northeast of Stirling City. 1219 Comment
  JEPS120604  Gnaphalium palustre Lowell Ahart 2013-11-17 19258 Butte McCabe Creek, below the high water line of Lake Oroville, about 5/8 mile southwest of the enterprise Bridge across Lake Oroville. Comment
  RSA256646  Gratiola ebracteata R. A. Vanbianchi 1974-4-20 208 Butte Paradise Skyway, 1 mile east of U.S. Highway 99. Comment
  CHSC115411  Grindelia camporum M. Rogers 2013-5-14 Butte Oroville, Brad Freeman Tail off Oro Powerhouse Road next to the spillway. 80 Comment
  OBI21642  Grindelia camporum Tracey and Viola Call, Viola Call 1964-6-28 2310 Butte 5 mi S of the town of Berry Creek, 4 mi N of Feather River 305 Comment
  CAS-BOT-BC305282  Grindelia hirsutula John Thomas Howell 1951-6-29 27769 Butte Big Bend Mt. 609 Comment
  CDA13734  Grindelia hirsutula var. davyi G. F. Hrusa, T. D. Wilfred 1997-6-27 13915 Butte Sierra Nevada; Feather Falls/Cascade Rd. Comment
  SEINET10475566  Grindelia hirsutula var. davyi Heidi H. Schmidt 1993-6-15 Schmidt 864 Butte Plumas National Forest on state road 23N06 1.5 miles N of the junction with highway 70. Mixed hardwood forest. 880 Comment
  RSA496348  Hackelia californica Elaine Joyal, D. Mehlman 1988-7-3 1308 Butte Butte-Tehama Cos. line: Lassen National Forest, e side of Humboldt summit. 2100 Comment
  CHSC35084  Hackelia nervosa R. A. Schlising; J. Fuller, M. Merryman, R. Banchero 1981-6-20 4093 Butte N part of county, E of Inskip, 5.8 mi E of crossing of West Branch of Feather River. Comment
  UC480671  Hackelia nervosa H. F. Copeland 1931-6-11 Butte woods above Butte Creek Meadows; Jonesville Comment
  CHSC91450  Hainardia cylindrica Lowell Ahart 2005-6-12 12129 Butte Pasture field, on the north side of Evans Reimer Road, about one mile east of Pennington Road, about 4 miles (air) southwest of Gridley. 18 Comment
  CHSC96365  Hamamelis vernalis L. P. Janeway; Erin Brandy 2007-5-9 8977 Butte Northern High Sierra Nevada. Along old Berry Creek Road 1.6 road km north of Oroville-Quincy Hwy; 1.8 air km south of the mouth of Berry Creek at North Fork Feather River (Lake Oroville). 421 Comment
  POM55212  Helianthella californica var. nevadensis Kate Conger 1907-1 s.n. Butte Brush Creek. Comment
  CHSC36557  Helianthus annuus L. Ahart 1982-7-10 3663 Butte In parking area of checking station, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 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
  CAS-BOT-BC309782  Hemizonia congesta subsp. luzulifolia Forman T. McLean 1921-9-29 21 Butte Chico Comment
  CHSC42581  Heracleum lanatum Vernon Oswald 1985-6-3 1803 Butte Near Willow Creek Bridge on Hubmboldt Rd. ca. 1 mi w of Jonesville. 1487 Comment
  CHSC114980  Herniaria hirsuta var. hirsuta Lowell Ahart 2015-4-18 20046 Butte On the east side of Swedes Flat Road, about 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. 384 Comment
  JEPS105997  Hesperevax acaulis var. acaulis Lowell Ahart 2004-4-4 10710 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, pasture, about 3 miles (air) west of Thermalito 48 Comment
  CHSC84124  Hesperevax caulescens Lowell Ahart 2003-5-14 10175 Butte About 150 yards west of the dredge piles along North Honcut Creek, about 2 1/2 miles north and 2 1/2 miles east of Honcut, about 12 miles southeast of Oroville. 60 Comment
  CAS-BOT-BC175999  Hesperolinon californicum Lowell Ahart 1988-5-12 5987 Butte About 1/2 mile north-east of the Honcut Cemetery, Joie Osgood Ranch, about 3 1/2 miles east and 1 1/2 miles north of Honcut 60 Comment
  CAS-BOT-BC176000  Hesperolinon californicum Lowell Ahart 1988-4-29 5962 Butte Near the ditch which was part of the Honcut Flume, on the Joie Osgood Ranch, about 2 miles north and 2 1/2 miles east of Honcut, about 12 miles south-east of Oroville 76 Comment
  CHSC66953  Hesperolinon californicum James D. Jokerst 1992-5-19 3360 Butte Cascade Range Foothills. Stone Ridge Ranch Development Site E of Cohasset Rd. at Chico Municipal. 97 Comment
  JEPS98477  Hesperolinon californicum Lowell Ahart 2000-5-31 8426 Butte 3 mi SE of Paradise (just W of Lake Oroville, 400 yds E of where Kunkle Creek enters Lake Oroville, E of Kunkle Power House) 286 Comment
  CHSC78154  Hesperolinon micranthum Lowell Ahart 2000-5-31 8427 Butte Steep grassy and shrubby slope, just west of Lake Oroville, about 400 yards east of where Kunkle Creek enters Lake Oroville, east of the Kunkle Power House, about 3 miles southeast of Paradise. 286 Comment
  UC1111608  Hesperolinon micranthum Lewis S. Rose 1955-6-15 55100 Butte 6 mi se Paradise (on Pentz Road) 426 Comment
  UC1100978  Heteranthera dubia Herbert L. Mason and Verne Grant 1946-8-14 13041 Butte Butte Sink Comment
  CHSC48012  Heterocodon rariflorum Vernon Oswald 1987-6-23 3022 Butte High Lakes Rd. 5.5 mi (odometer) n of Philbrook Rd. 1853 Comment
  JEPS115569  Heterocodon rariflorum Lowell Ahart 2009-5-23 15761 Butte South of a small drainage, about 30 yards west of Guardians Trail, about 100 yards northeast 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
  JEPS117615  Heterocodon rariflorum Lowell Ahart 2010-6-9 16777 Butte Between the vernal pool and the poor dirt road, about 100 yards east of the fence, about 150 yards east of where you park, east of Cherokee Road, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 384 Comment
  SD116535  Heterocodon rariflorum Barbara Ertter, Jeffrey Strachan and Lowell Ahart 1980-5-8 3320 Butte North Honcut Creek on Peter Ahart Ranch, ca. 2.5 miles northeast of Honcut between Marysville and Oroville. 45 Comment
  SEINET10460747  Heterocodon rariflorum Mary Susan Taylor 1980-7-20 Taylor 3191 Butte Big Bald Rock, ca. 3 mi E of Lake Mad rone, NE of Oroville. With L. Ahart, R. Schlising & J. Jokerst. 998 Comment
  CAS-BOT-BC143635  Heteromeles arbutifolia Lowell Ahart 1985-6-30 5092 Butte 200 yards south of the road to the Forbestown Res., 100 yards south of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown 899 Comment
  CHSC45193  Heteromeles arbutifolia Lowell Ahart 1975-11-13 994 Butte Near the edge of North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  JEPS115260  Heteromeles arbutifolia Lowell Ahart, John Dittes, Josephine Guardino 2008-11-8 15427 Butte On the south side of the gravel road and Big Chico Creek, about 300 yards east of the end of Chico Canyon Road, Upper Bidwell Park, Chico 68 Comment
  CHSC43243  Heterotheca grandiflora Lowell Ahart 1987-9-24 5905 Butte Near the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 274 Comment
  CHSC34051  Heterotheca oregona var. compacta L. Ahart 1981-7-18 2940 Butte In the burrow area ca. 4.5 mi sw of Oroville. Along dirt road near the base of the levee. 35 Comment
  SEINET10970395  Heuchera micrantha var. erubescens Lowell Ahart 1983-5-28 Ahart 4019 Butte Along trail to Feather Falls, ca. 5 mi n of the town of Feather Falls. Yellow Pine Forest; 600 m. 600 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
  SD8927  Hieracium albiflorum Mrs. R. M. Austin 1883-1 Butte Comment
  CHSC38056  Hirschfeldia incana R. E. Preston 1983-5-26 385 Butte At roadside; at PG and E rest stop near Arch Rock Tunnel, ca. 4 mi NE of Pulga. 475 Comment
  CAS-BOT-BC55329  Hirschfeldia incana Lowell Ahart 1974-5-18 s.n. Butte At Bagor. 304 Comment
  CHSC113392  Hoita macrostachya Lowell Ahart 2014-5-27 19532 Butte Bottom of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 41 Comment
  SEINET10451904  Hoita macrostachya Lowell Ahart, Peter Ahart 1983-7-24 Ahart 4201 Butte T19N R6E nw sec 19. Ca. 0.5 mi sw of jct of Oroville-Forbestown Rd & Black Bart Rd, ca. 6 mi sw of Forbestown. Yellow Pine Forest; 750 m. 750 Comment
  CHSC959  Hoita orbicularis R. M. Staley 1952-7-15 Butte Paradise. 548 Comment
  JEPS119957  Holcus lanatus Lowell Ahart 2012-6-14 18193 Butte Dry high bank on the north side of Big Chico Creek, about 30 yards east of Mangrove Avenue, Annie's Glen, Lower Bidwell Park, Chico. Comment
  UC1594728  Holodiscus discolor Lowell Ahart 1992-7-26 6842 Butte 2 air mi S of Snow Mountain (W side of a small stream 1/2 mi N of the Carr Mine) 1767 Comment
  LA207929  Holodiscus discolor var. glabrescens E. B. Copeland; 1929-7-17 sn Butte above Jonesville 2100.0 Comment
  CHSC12003  Holodiscus microphyllus var. glabrescens E. B. Copeland 1929-7-17 375 Butte Above Jonesville. On mountain top. 2000 Comment
  JEPS87132  Holozonia filipes Lowell Ahart 1992-7-23 6833 Butte about 1.25 mi nw Oroville Dam (bottom and sides of Gulch, n of the Thermalito diversion Pool); Lake Oroville Recreation Area, Oregon Gulch 91 Comment
  SEINET10507464  Hordeum brachyantherum Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4154 Butte T20N R5E ne sec 15. Along Ponderosa Way (Big Ridge Rd), ca. 2 mi e of its jct with East Fork Canyon Creek, ca. 15 mi ne of Oroville. Foothill Woodland; 600 Comment
  CAS-BOT-BC281252  Hordeum brachyantherum subsp. brachyantherum Lowell Ahart 1979-5-31 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  CHSC109604  Hordeum brachyantherum subsp. brachyantherum Lowell Ahart 2012-5-14 18045 Butte A little east of Table 7, on the south side of Big Chico Creek, north of the paved road, northeast of Cedar Grove, Lower Bidwell Park, Chico. 70 Comment
  CHSC49553  Hordeum brachyantherum subsp. brachyantherum Vernon Oswald 1984-7-2 1343 Butte Humbug Rd. 1.7 mi s-w of Humbug Summit. In a meadow. 1859 Comment
  CHSC33682  Hordeum depressum L. Ahart 1981-5-16 2807 Butte Along edge of rd in Graylodge Waterfowl Mgmt Area, 11 mi sw of Gridley. 35 Comment
  CHSC53988  Hordeum depressum Vernon H. Oswald 1991-4-25 4533 Butte West Liberty Rd, 0.8 mi west of Pennington Rd, on the north edge of Gray Lodge Wildlife Area. Bordering the road near the PG and E Substation. 20 Comment
  HSC91100  Hordeum marinum subsp. gussoneanum J. P. Smith 1974-4-20 7345 Butte 300 yds. S of junction of Pentz and Clark Rd. 61 Comment
  CHSC56635  Hordeum vulgare J. Lund 1980-4-28 Butte 0.3 mi south of Palermo on Hwy 99. 76 Comment
  JEPS94725  Horkelia californica subsp. dissita Lowell Ahart 1998-6-30 8012 Butte about 7 air mi n of Oroville (sw of the ione oak tree, w of the cow chute on the w side of Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  CHSC4584  Horkelia tridentata C. Glascock 1965-5-11 379 Butte 14.15 mi. nw of Russell Dr. (south Paradise) and ca. 100 yds upstream from the upper end of De Sabla reservoir, on stream bank at w roadside of Stirling Ciry hwy. Comment
  RSA85212  Horkelia tridentata subsp. tridentata F. W. Peirson 1926-6-21 6781 Butte Butte Meadow, Humboldt Road Comment
  CHSC45282  Hosackia crassifolia var. crassifolia Vernon Oswald 1987-6-23 3014 Butte High Lakes Rd. 2.1 mi (odometer) n of Philbrook Rd. 1828 Comment
  CHSC61316  Hosackia crassifolia var. crassifolia Lowell Ahart 1993-7-29 7126 Butte Along a logging road, about 1/8 mile north-west of the Snow Mine, about 2 1/2 miles north-east of the Bald Mountain, about 6 1/2 miles north-east of Stirling City. 1676 Comment
  JEPS113728  Hydrocotyle umbellata Lowell Ahart 2007-7-11 14285 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
  UCD38749  Hypericum Beecher Crampton 1957-9-17 4615 Butte 5 miles northwest of Biggs, Biggs Rice Experiment Station. Comment
  CAS-BOT-BC400823  Hypericum anagalloides Lowell Ahart 1974-8-14 s.n. Butte Along North Honcut Creek, Peter Ahart Ranch, Honcut 45 Comment
  CHSC38469  Hypericum anagalloides Vernon Oswald 1983-8-19 1008 Butte Upper Bidwell Park, Chico, ca. 200 ft. n of Upper Park Rd. at Diversion Dam. 134 Comment
  CHSC72251  Hypericum anagalloides Lowell Ahart 1998-9-11 8054 Butte Seep area west of the cattle chute on the west side of Cherokee Road, North Table Mountain, about 7 (air) miles north of Oroville. 403 Comment
  SD130457  Hypericum anagalloides Lowell Ahart 1980-7-20 2478 Butte At Little Bald Rock 1100 Comment
  CHSC109563  Hypericum concinnum L. P. Janeway 2012-6-23 10885 Butte Northern High Sierra Nevada. Southwest spur of Rocky Ridge, 0.6 air km south of Batchelor Point; along Road 23Np6E 0.8 road km southeast of Rim Road/Ponderosa Way. 895 Comment
  SFV2322  Hypericum concinnum B. Fuller 1962-5-23 s. n. Butte Sierra Nevada Paradise. Lot across the street from 5330 Harrison Road. 515 Comment
  CAS-BOT-BC410227  Hypericum concinnum Lloyd W. Swift 1932-6-6 68182 Butte Brush Creek R.S., Plumas Forest. 1036 Comment
  UC204465  Hypericum formosum var. scouleri A. A. Heller 1914-7-23 11599 Butte along streams in Chico meadows Chico 1219 Comment
  CAS-BOT-BC401219  Hypericum perforatum A. A. Heller 1914-7-13 11570 Butte Mt. Ida Ranch, about 5 to 10 miles east of Oroville Comment
  CAS-BOT-BC401337  Hypericum scouleri E. B. Copeland 1930-7-18 426 Butte Jonesville 1550 Comment
  CHSC113485  Hypericum scouleri Lowell Ahart 2014-7-13 19661 Butte West part of a large wet meadow (some bog), about 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CHSC101681  Hypochaeris glabra Lowell 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. 67 Comment
  SEINET10473834  Hypochaeris glabra Mary Susan Taylor 1980-4-6 Taylor 2454 Butte On S side of Melody Lane, ca. 1 mi E of its junction with Honcut-Palermo Rd, ca. 5 mi S of Palermo. With L. Ahart & J.D. Jokerst. 38 Comment
  CAS-BOT-BC133512  Iris hartwegii A. A. Heller 1939-3-23 15357 Butte 3 miles below Paradise on the Pentz road Comment
  SEINET4170702  Iris hartwegii A. A. Heller 1939-3-23 15357 Butte Paradise , in the Arid Transition Zone. 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
  CHSC2205  Iris macrosiphon M. Roberson 1956-4-7 Butte SN of Paradise along Skyway. 426 Comment
  CHSC27771  Iris macrosiphon David Bendix 1978-4-18 15 Butte 5 m sw of intersection of Neal Road with Skyway, Paradise. 530 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
  CHSC29031  Iris macrosiphon J. D. Jokerst 1980-3-28 526 Butte E of the northern most portion of North Table Mt. 365 Comment
  CHSC32592  Iris macrosiphon J. D. Jokerst; R. A. Schlising, B. Banchero 1981-3-22 1263 Butte Adjacent to Hwy 162. N of Hwy 162 ca 1-2 mi S of the Bidwell Bar Bridge where section 5 and 8 meet,. Comment
  CHSC99636  Iris macrosiphon H. Koeth; H. Jansen 2007-5-2 Butte Big Chico Creek Ecological Reserve, Chico (Forest Ranch). UTM 10 610006E 4406721N. 471 Comment
  HSC87295  Iris macrosiphon Bruce Hamren 1978-4-24 20 Butte Upper Miocene Canal 448 Comment
  RSA136503  Iris macrosiphon Lee W. Lenz, E. K. Balls 1955-5-13 20484 Butte 0.5 mile south of Paradise on road from Oroville to Magalia 427 Comment
  CAS-BOT-BC69948  Isoetes howellii Lowell Ahart 1974-5-30 s.n. Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC29222  Isoetes nuttallii M. S. Taylor 1980-3-28 2404 Butte Just e of Chico, between Humboldt Rd, and Hwy 32, ca. 1/4 mi e of Forest Ave, ca. 1 1/4 mi e of Hwy 99. 76 Comment
  JEPS127194  Isoetes nuttallii Lowell Ahart 2016-4-15 20743 Butte About 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. Comment
  SEINET10530328  Isoetes nuttallii Mary Susan Taylor 1980-5-27 Taylor 2678 Butte T21N R6E sc sec 30. Big Bend quad. On Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, large granite dome 998 Comment
  SEINET10530329  Isoetes nuttallii Mary Susan Taylor 1980-5-15 Taylor 2635 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
  UCD72991  Isoetes orcuttii Ayzik Solomeshch 2003-4-9 s.n. Butte Wurlitzer Reserve, about 10 mi. north from Chico on Hwy 99, west side of the road. Comment
  JEPS95012  Isolepis setacea Lowell Ahart 1997-10-20 7929 Butte 3 air mi nw of Sly Creek Reservoir Dam (on w side of sharp bend in South Fork Feather River, about 1/4 mi n of bridge across the river, about 3/4 mi n of Golden Trout Crossing); South Fork Feather River 914 Comment
  CAS-BOT-BC112643  Isolepis setacea Lowell Ahart 1984-6-8 4685 Butte 6 miles NE of the Ponderosa Dam. 550 Comment
  CHSC30733  Jensia rammii M. S. Taylor 1980-5-27 2707 Butte Little Bald Rock, ca. 3 mi s of Brush Creek. 1016 Comment
  UCSB63741  Juncus acuminatus Ahart, Lowell 1998-6-30 Butte T20N, R4E, NE 1/4 Sect 17; west of cow chute on the west side of Cherokee Rd; North Table Mountain; about 7 mi (air) north of Oroville 403 Comment
  RSA755751  Juncus balticus var. balticus L. Ahart 2009-8-23 16291 Butte On the east side of Ten Mile House Road, Upper Bidwell Park, about 3/4 air miles west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  CHSC113246  Juncus bufonius var. bufonius Lowell Ahart 2014-4-26 19412 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
  CHSC28749  Juncus bufonius var. bufonius J. D. Jokerst 1978-4-12 122 Butte Richvale Vernal Pools, 1/4 mi. s. of the intersection of Hwy 162 and Hwy 99, along the latter. Comment
  CHSC61346  Juncus bufonius var. bufonius Lowell Ahart 1993-7-29 7118 Butte Near a seep, about 2 1/2 miles north-east of Bald Mountain, about 6 1/2 miles north-east of Stirling City. 1584 Comment
  CHSC90821  Juncus bufonius var. bufonius Lowell Ahart 2005-5-2 11775 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
  UC1609271  Juncus covillei var. obtusatus Lowell Ahart 1993-6-26 7010 Butte about 1/4 mi w of Lost Creek Reservoir (on an old logging road, n of the dirt road) 1036 Comment
  CHSC78400  Juncus diffusissimus Lowell Ahart 2000-7-18 8596 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
  UC1562391  Juncus diffusissimus Lowell Ahart 1990-5-21 6476 Butte about 4.5 mi sw Oroville (about 0.25 mi s of Feather River, about 0.4 mi w of Pacific Heights Road, w. edge of small pond) 30 Comment
  UCD141451  Juncus diffusissimus Lowell Ahart 1990-5-21 6476 Butte about 1/4 mile south of the Feather River, about 4/10 mile west of Pacific Heights Road, about 4.5 miles southwest of Oroville. 30 Comment
  CHSC73491  Juncus dubius B. Castro; L. Gehrung 1995-7-26 597 Butte Pinkard Meadow. Meadow along Pinkard Creek, ca 0.7 air mi W of Sly Creek Reservoir and 0.5 mi E of Mooreville Ridge, via a spur off USFS Rd 22N24.5. In center of moist meadow E of road. 1143 Comment
  SEINET5716466 Image available Juncus effusus Lowell Ahart 1985-1 5086 Butte About 2.5 mi. NE of Forbestown. 10 yds. S of dirt rd. to the Forbes town Res.; Forbestown 869 Comment
  SEINET10938193  Juncus effusus var. pacificus Mary Susan Taylor 1977-8-16 Taylor 1449 Butte Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 61 Comment
  CHSC44647  Juncus ensifolius J. D. Jokerst; R. A. Schlising 1982-10-7 1660 Butte Along the margins of the West Branch of the Feather River, at Coon Hollow where Forest Service Road 27N74 crosses the river. 1615 Comment
  CHSC96319  Juncus ensifolius L. P. Janeway 2006-8-12 8843 Butte Northern High Sierra Nevada. Meadow at head of northwestern branch of Keyser Creek, below sharp bend in Concow Road, 0.3 km east of the summit of Bald Mountain. 1695 Comment
  JEPS113537  Juncus ensifolius Lowell Ahart, Lawrence Janeway, Linnea Hanson 2007-7-10 14279 Butte Northwest part of a large open area, about 250 yards east of Bean Creek Road, northeast of Little Bald Road, about 16 miles (air) northeast of Oroville 1024 Comment
  CHSC28654  Juncus exiguus J. D. Jokerst; M. S. Taylor 1979-10-13 392 Butte Adjacent to creek. Intersecton of Jordan Hill Rd. (Ponderosa Way) and Griffth Gulch. 701 Comment
  CHSC49611  Juncus exiguus Vernon Oswald 1983-6-22 753 Butte Chico Meadows, ca. 1 mi n of Butte Meadows. Near a stream in a mountain meadow. 1292 Comment
  JEPS113855  Juncus howellii Lowell Ahart 2007-7-2 14245 Butte North road gutter, Bald Rock Road, about 100 yards northeast of the intersection of Bald Rock Road and Rockerfeller Road, about 13 miles (air) northeast of Oroville 762 Comment
  CAS-BOT-BC110149  Juncus leiospermus var. ahartii Lowell Ahart 1986-4-22 5245 Butte Peter Ahart Ranch, about 2.25 miles north and 0.5 mile east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC106860  Juncus leiospermus var. ahartii Lowell Ahart 2011-5-2 17351 Butte Open pasture field, 226 feet north of west tower leg, between the middle and west wire, Peter Ahart Ranch, about 1 mile north and 1 5/8 miles east of Honcut, about 12 miles south of Oroville. 54 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
  CHSC113248  Juncus leiospermus var. leiospermus Lowell Ahart 2014-4-20 19391 Butte About one mile northwest of the parking area on the west side of Cherokee Road, about 7 miles (air) north of Oroville. 356 Comment
  CHSC83955  Juncus leiospermus var. leiospermus Lowell Ahart 2003-4-8 10036 Butte On the high water line of a small vernal pool, about 20 yards south of a faint poor dirt road, pasture field, about 150 yards southwest of the iron gate and fence, west of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 344 Comment
  JEPS117322  Juncus leiospermus var. leiospermus Lowell Ahart 2010-5-16 16685 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 371 Comment
  CHSC69060  Juncus nevadensis Lowell Ahart 1997-8-1 7762 Butte On the bottom of Little Kimshew Creek, Snow Meadow, about 1/4 mile east of Table Mountain. about 8 miles (air) northeast of Stirling City. 1524 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
  CHSC78342  Juncus orthophyllus Lowell Ahart 2000-7-11 8566 Butte On the north side of a dirt road, about 100 yards north of Lumpkin Ridge Road, upper west branch of No-nothing Creek, about 1 mile southwest of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, about 4 miles (air) northeast of Feather Falls. 1219 Comment
  JEPS98489  Juncus orthophyllus Lowell Ahart 2000-6-29 8536 Butte 5 air miles E of Magalia (E side of Flea Meadow, 1/2 mi W of Flea Mountain, 3 1/2 air miles N of Concow Reservoir) 1036 Comment
  CHSC49626  Juncus tenuis Vernon Oswald 1987-5-12 2390 Butte Butte Creek Reserve on the s side of Butte Creek, n of the Skyway, between Crouch Ditch dam and the double set of transmission lines. Near a dredger pond. 80 Comment
  RSA0035818  Juncus tenuis Lowell A. Ahart 2008-6-2 14804 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
  HSC100776  Juncus usitatus Lowell Ahart 2009-7-4 15999 Butte W side of gravel road, ~100 yd. S of parking lot 3, Gray Lodge Waterfowl Management Area, 6 (air) mi. SW of Gridley. 21 Comment
  RSA729996  Juncus usitatus L. Ahart 2007-7-11 14292 Butte 11 yards west of the high gravel road (at turn before washout), about 0.5 mi. west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air)SW of Oroville. 36 Comment
  NY786843  Keckiella breviflora var. glabrisepala L. S. Rose 1940-5-30 40425 Butte Feather River Canyon, 25 miles northeast of Oroville 609.6 Comment
  CAS-BOT-BC237821  Keckiella lemmonii Lowell Ahart 1983-7-24 4209 Butte On the road cutbanks at the Forbestown Res., about 5 miles north-east of Forbestown 450 Comment
  CHSC31449  Keckiella lemmonii L. Ahart 1980-9-10 2644 Butte Along the edge of the rd ca. 7 mi e of Milsap Bar, ca. 32 mi ne of Oroville. Comment
  JEPS94327  Kelloggia galioides Lowell Ahart 1997-8-1 7802 Butte about 6 air mi ne of Stirling City (about 1 1/2 mi se of Bald Mountain, sw of Keyser Creek, on s side of the County Road); s side of the County Road 1432 Comment
  UC889317  Kelloggia galioides A. A. Heller 1917-7-29 12870 Butte summit above Jonesville 2133 Comment
  SEINET10869775  Kelloggia galioides Mary Susan Taylor 1978-7-18 Taylor 1678 Butte On W side of Hwy 32 on edge of Yellow Pine Forest, in dry open area, ca. 1/4 mi N of Forest Ranch. 718 Comment
  CHSC65176  Kickxia elatine Lowell Ahart 1995-8-19 7611 Butte East side of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles south-east of Oroville. 36 Comment
  CHSC103754  Koeleria phleoides Lowell Ahart 2010-5-16 16701 Butte About 1/2 mile south of parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 364 Comment
  UC9457  Kumlienia hystricula Mrs. R. M. Austin and Bruce March 1898 1891 Butte Butte County Comment
  CHSC26744  Kyhosia bolanderi M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1469 Butte Meadows, around Julies Creek, between Old Humboldt Rd and Butte Creek, ca. 3.4 mi e of Butte Meadows. 1341 Comment
  CHSC37390  Lactuca serriola R. A. Schlising 1980-8-31 3970 Butte Richvale Vernal Pools, 1/4 mi s of jct Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  CHSC31536  Lagophylla glandulosa L. Ahart 1979-5-20 1879 Butte On bottom of wash. Peter Ahart Ranch, Honcut. 50 Comment
  POM308519  Lagophylla glandulosa Henry J. Ramsey, Henry J. Ramsey 1939-10-16 3176 Butte Oroville Comment
  CHSC19941  Lamium amplexicaule M. S. Taylor 1975-3-25 425 Butte Abundant in weed field between 11th and 12th Sts, at end of Citrus Ave, Chico. Comment
  CHSC28915  Lamium amplexicaule M. S. Taylor 1980-3-1 2329 Butte West end on n side of Neal Rd, ca 1 mi e of Hwy 99, ca. 7 mi s of Chico. 76 Comment
  JEPS108736  Lasthenia californica Lowell Ahart 2006-5-3 12557 Butte Base of a basalt outcrop, about 1/2 mile north of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 409 Comment
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Jan 19 2011
  CHSC112890  Lasthenia fremontii Robin Carter; Sabrina Bell 2011-5-18 Butte Sacramento Valley. Ca 0.2 air mi E of Hwy 99 off NW edge of the Thermalito Afterbay, ca 450 ft NW of the levee road and just S of fenceline along rice fields. 41 Comment
  CHSC13845  Lasthenia fremontii P. Haberkern 1974-4-21 26 Butte In field off the Skyway, ca. 0.5 mi e of Notre Dame Blvd, e of Chico. 60 Comment
  JEPS107750  Lasthenia fremontii Lowell Ahart 2005-5-14 11811 Butte In a rice field, Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut, about 12 miles (air) southeast of Oroville 25 Comment
  POM55153  Lasthenia fremontii A. A. Heller, H. E. Brown 1902-5-2 5441 Butte Near Butte City Comment
  UC2061406  Lasthenia gracilis Rachael L. Olliff Yang with Meagan F. Oldfather 2017-4-5 12 Butte Table Mountain, about 100 m North of the main public parking lot. Comment
  CHSC113350  Lathyrus angulatus Lowell Ahart 2014-5-13 19461 Butte Below the high water line of Lake Oroville, along the old paved road, about 50 yards west of the Enterprise Boat Ramp, about 11 miles (air) east of Oroville. 259 Comment
  CHSC98994  Lathyrus angulatus Lowell Ahart 2008-5-21 14770 Butte Dry bare granite soil, below the high water line of Lake Oroville, on the north 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
  RSA767796  Lathyrus angulatus L. Ahart 2010-5-5 16607 Butte Parking area east of McCabe Creek, a few feet below the high water line of Lake Oroville, about 11 air miles northeast of Oroville 264 Comment
  JEPS98328  Lathyrus hirsutus Lowell Ahart 2000-6-17 8483 Butte 2 mi S of Paradise (about 1/4 mi NE of Kunkle Reservoir, E of the Pentz Magalia Road) 548 Comment
  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
  SEINET5327336  Lathyrus sativus R. McKee 1916-5-9 40281 Butte Chico Introduction Garden Comment
  SEINET10487279  Lathyrus sphaericus Barbara J. Ertter, Lowell Ahart; Jeffrey Strachen 1980-5-6 Ertter 3277 Butte Peter ahart ranch about 2.5 mi nne of honcut between oroville and marysville, Dried vernal pool previously plowed as grainfield, now reverted, very rocky, Valley grassland. T17n, r4e, sec 4 ne 1/4. Higher ground around pool. Flowers Rose red. 30 Comment
  CHSC90505  Lathyrus sulphureus J. Marr 1988-4-20 3 Butte Ca. 25 ft. n side of Honeyrun Rd., Paradise. 9 mi ese of Chico. 243 Comment
  CDA32004  Lathyrus tingitanus L. Ahart 2009-6-3 15811 Butte On the north side of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico Comment
  CHSC30903  Lathyrus tingitanus M. S. Taylor 1980-5-27 2716 Butte S side of Bald Rock Rd., ca. 1 mi e of Lake Madrone. 670 Comment
  CHSC2924  Layia fremontii W . Fitzwater 1958-3-15 Butte Shasta Hwy., Chico area. Comment
  CHSC3871  Layia fremontii Gary Dutton 1966-3-14 112 Butte Found 1 mile into Upper Bidwell Park. From entrance. Comment
  UC473555  Layia fremontii L. S. Rose 1931-4-12 Butte Honcut Comment
  CAS-BOT-BC274354  Leersia oryzoides Lowell Ahart 1987-7-3 5777 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC51670  Leersia oryzoides M. Bailey 1990-10-9 417 Butte East Branch of Clear Creek, near intersection of the east and west branches of Clear Creek near Pentz Road, Butte College Campus. 85 Comment
  CHSC66460  Leersia oryzoides Vernon H. Oswald; Lowell Ahart 1996-6-10 7760 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Near the center of the W side of Tract 7.1, Sanctuary 1. 33 Comment
  CHSC52966  Lemna gibba Vernon H. Oswald 1991-2-23 4470 Butte Chico Sewer Treatment Plant on River Rd, ca. 4.5 mi w of Chico. In an irrigation ditch along the west boundary of the treatment plant. 39 Comment
  SEINET10465992  Lemna minor Mary Susan Taylor 1975-10-3 Taylor 944 Butte Ca. 1/4 mile N of the Washout, between River Road and the Sacramento River, ca. 10 mi W of Chico. Riparian Woodland and sloughs, wet and humid. 37 Comment
  CDA39175  Lemna minuta L. Ahart 2006-5-26 12639 Butte On the south side of Sheldon Avenue at the intersection with Larkin Road, about one mile south of Gridley Road, about 2 miles (air) southeast of Gridley. Comment
  JEPS120767  Lemna minuta Lowell Ahart 2013-9-20 19063 Butte About 20 yards north of Hamilton Road, about 1/8 mile east of Riceton Highway, about 1 mile southeast of the Rice Experiment Station. Comment
  CHSC116704  Leontodon saxatilis subsp. longirostris Lowell Ahart 2016-5-14 20823 Butte On the east side of North Honcut Creek, Peter Ahart Ranch,about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 57 Comment
  CAS-BOT-BC215736  Lepechinia calycina Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CHSC101831  Lepechinia calycina Lowell Ahart 2009-5-23 15759 Butte About 10 miles northeast of Chico, Upper Bidwell Park, about 1/4 mile west of the intersection of Highway 32 and Ten Mile House Road. On the east side of Guardians Trail by shrubs, about 150 yards southwest of Ten Mile House Road. 407 Comment
  RSA300968  Lepechinia calycina D. C. Michener 1982-7-28 4136 Butte Open foothill woodland 0.3 miles southeast of CA 32 on Santos Way, 8.0 miles northeast of jct of CA 32 & 99 near Chico. Comment
  CAS-BOT-BC88807  Lepidium campestre Lowell Ahart 1987-5-6 5514 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CHSC102419  Lepidium campestre Lowell Ahart 2009-7-9 16017 Butte On dry sandy soil, 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
  CHSC65989  Lepidium didymum Vernon H. Oswald 1996-5-9 7548 Butte Sacramento Valley. 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 levee at the SW corner of the S paddock of Tract 7, Sanctuary II. 32 Comment
  UCD115775  Lepidium nitidum L. Ahart 1973-2-21 153 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC90625  Lepidium strictum Sally A. Carter 1988-4-12 1 Butte South side of Little Butte Creek, about 8.8 mi east-southeast of Chico, 200 ft west of Honey Run Road. 160 Comment
  CHSC94004  Lepidium strictum R. Fischer 2005-4-10 676 Butte Collection from along Hwy. 32, ca. 4 miles north of Chico in Bidwell Park. On the road bed of the 10 Mile House Road at the trail head. 457 Comment
  RSA768993  Lepidium strictum L. Ahart 2010-4-5 16573 Butte Vacant lot, about 50 feet west of Virginia Street, about 20 feet south of Spruce Street in Gridley. 29 Comment
  POM93997  Lepidium strictum C. C. Bruce 1897-06 1949 Butte Chico Comment
  SEINET3441871  Leptochloa fusca subsp. fascicularis Unknown 2003-6-22 10298 Butte Richvale, Richvale, south side of the Richvale highway, about 50 yards east of the railroad 30 Comment
  UCD64022  Leptochloa fusca subsp. uninervia H. Clem Meith 1968-11-1 Butte Oroville. Comment
  UC478475  Leptodactylon pungens E. B. Copeland 1931-6-22 682 Butte Jonesville; mountain top w of The Summit 2150 Comment
  JEPS122143  Leptosiphon bicolor Lowell Ahart 2014-5-2 19435 Butte Along the trail north side of Beatson Hollow, about 1 1/2 miles southwest of the Improved Parking Area and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  CHSC29964  Leptosiphon bolanderi R. A. Schlising 1980-6-1 3609 Butte S of Paradise at Kunkle Reservoir, off Pentz-Magalia Hwy. 440 Comment
  CHSC45352  Leptosiphon ciliatus Vernon Oswald 1986-5-7 2001 Butte Upper Bidwell Park, Chico, on the north rim e of the power lines. 335 Comment
  CHSC9705  Leptosiphon ciliatus Nancy Mosman 1971-7-11 67 Butte In meadow ca. 10 ft from s side of Humboldt Road and ca. 0.8 mi e of Butte Meadow Ranger Station. 1371 Comment
  SD122563  Leptosiphon ciliatus Lowell Ahart, Peter Ahart 1984-5-28 4645 Butte Ca. 1.0 mile northeast of the West Branch Bridge, ca. 2.0 miles south of Old Yankee Hill, ca. 16 miles northeast of Oroville. 449 Comment
  CHSC59335  Leptosiphon filipes J. L. Guardino 1992-4-16 8 Butte Paradise, 1/4 mi s of Circle Dr terminus. 472 Comment
  CHSC38375  Lessingia nana Vernon Oswald 1983-8-2 948 Butte Upper Bidwell Park, Chico, near Parking Area C, Horseshoe Lake. 100 Comment
  CAS-BOT-BC341743  Lessingia nana Rimo Bacigalupi; G. T. Robbins 1955-7-15 5304 Butte Just above Big Chico Creek, about 4 miles above the Hooker Oak 121 Comment
  CHSC102843  Lessingia nemaclada Lowell Ahart 2009-6-30 15965 Butte About 150 yards north of a small drainage, along the Guardian Rock Trail, about 150 yards southwest of Pine Trail, about 1/2 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico. 398 Comment
  CHSC30276  Lessingia nemaclada M. S. Taylor; J. D. Jokerst 1979-10-13 2274 Butte On w side of Jordan Hill Rd (Ponderosa Way on some maps), ca. 11.1 mi n of its jct with Concow Rd, ca. 1.9 mi n of Sawmill Peak. 853 Comment
  CHSC89484  Lessingia nemaclada Jenny Marr 1994-7-6 215 Butte Located in the mountains above Oroville, off Oro-Quincy Hwy., along Bloomer Hill Road. 457 Comment
  RSA0045592  Lessingia nemaclada L. P. Janeway 2012-10-11 11072 Butte Northern High Sierra Nevada. Plumas National Forest; southwestern end of Rocky Ridge, 0.8 km west of Ponderosa Way/Rim Road, near high-voltage power lines. 895 Comment
  RSA725007  Lessingia nemaclada L. Ahart 2006-9-13 13331 Butte At the Cresta Power House, about 2 3/4 miles northeast of Pulga, about 23 miles (air) northeast of Oroville 452 Comment
  CHSC84457  Lessingia virgata Lowell Ahart 2003-8-3 10464 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. 60 Comment
  UC129306  Leucothoe davisiae Miss Kate Conger 1907-1 Butte Brush Creek Comment
  SEINET10449275  Leucothoe davisiae Mary Susan Taylor 1982-6-24 Taylor 4744 Butte T23N R4E ne/nw sec 13. Pulga SW quad. Rag Dump 5, ca. 2 mi n of Flea Mt, ca. 10 mi n of Jarbo Gap on Hwy 70. Elev ca. 3800 ft. 1158 Comment
  CHSC1371  Lewisia rediviva J. Edwards 1937-4-1 Butte Table mountain S. of Cherokee. 426 Comment
  SD6538  Lilium Unknown 1882-7-14 Butte Sutton House. Comment
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Jul 3 2010
  CAS-BOT-BC509329  Lilium kelleyanum E. B. Copeland 1930-7-18 614 Butte Jonesville 1500 Comment
  CHSC44652  Lilium pardalinum subsp. pardalinum L. P. Janeway 1988-7-2 2962 Butte Near the rd to French Cr, 0.9 mi S of Coyote Gap. 1188 Comment
  CAS-BOT-BC110623  Limnanthes alba Lowell Ahart 1980-4-30 2136 Butte Sierra Nevada. On Swedes Flat Road near Bangor. 320 Comment
  CHSC1005  Limnanthes alba subsp. alba Edna Canfield 1904-5-7 Butte Hooker Oak Field. 76 Comment
  HSC92521  Limnanthes douglasii subsp. nivea Jeanne McFarland, Kathie Meyer, Anne Mullenniex 1995-4-9 44 Butte On N Table Mtn., S of Paradise on Cherokee Rd., at E end of Table Mtn. 381 Comment
  JEPS119683  Limnanthes douglasii subsp. rosea Lowell Ahart 2012-5-2 17966 Butte About 30 yards west of the Easter Cross Parking Lot, Upper Bidwell Park, about 1 mile east of Chico. Comment
  CHSC29029  Limnanthes floccosa subsp. californica J. D. Jokerst 1980-3-28 523 Butte Collected at type locality, pastures NW of the jct of Gage-Shippee Rd and Hwy 99. 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
  CHSC92162  Limnophila X ludoviciana Lowell 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. 28 Comment
  SEINET10496778  Linanthus androsaceus subsp. laetus Mary Susan Taylor 1980-4-16 Taylor 2490 Butte T21N R4E s sec 17 Cherokee quad. Lake Oroville State Recreation Area, up to 0.5 mi SE of Parish Camp, just S of Lime Saddle Memorial Park, ca. 5 mi S of Paradise; Foothill Woodland. 305 Comment
  SEINET10496779  Linanthus androsaceus subsp. laetus Mary Susan Taylor 1980-4-19 Taylor 2545 Butte S side of Butte Creek, on dry bluffs above the creek in Foothill Woodland, ca. 1/4 mi upstream from Honey Run Covered Bridge, ca.. 6 mi E of Chico. With J.D. Jokerst. 183 Comment
  CHSC76954  Linanthus dichotomus Ida Ryan 1893-4-1 Butte Rancho Chico. Comment
  JEPS110206  Linanthus harknessii Lowell Ahart 2006-7-16 13008 Butte On the west side of the poor dirt road, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1524 Comment
  JEPS117409  Linanthus parviflorus Lowell Ahart 2010-5-7 16628 Butte On both sides of Guardian Trail, about 1/2 miles west of Highway 32, Upper Bidwell Park, about 4 1/2 miles (air) northeast of Chico 238 Comment
  CHSC42324  Linanthus pungens R. M. Austin 1896-7-1 109 Butte Mountains-near Colby. Comment
  CHSC90295  Linnaea borealis var. longiflora L. P. Janeway 1994-7-19 4697 Butte Northern High Sierra Nevada. South side of Cascade Creek 0.4 mi east of confluence with South Branch Middle Fork Feather River. 1179 Comment
  CHSC74726  Lipocarpha aristulata B. Castro 1987-8-25 203 A Butte Lower Butte Creek, on cobble and gravel bars along S edge, ca 0.25 mi E of its crossing under Hwy 99, and 2.1 mi S of the Skyway. 60 Comment
  CHSC75979  Lipocarpha aristulata Lowell Ahart; Vernon H. Oswald 1999-8-13 8146 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
  CAS-BOT-BC111975  Lipocarpha micrantha Lowell Ahart 1969-9-9 s.n. Butte Peter Ahart Ranch, Honcut. Along North Honcut Creek. 150 Comment
  CHSC28632  Lithocarpus densiflorus M. S. Taylor 1979-3-31 1969 Butte Lickey Ranch, along Ishi Trail Rd, ca. 1/4 mi ne of Concow Rd and Lake Concow, ca. 25 mi ne of Oroville. 670 Comment
  JEPS37839  Lithocarpus densiflorus W. L. Jepson 1924-7-18 10602 Butte above Merrimac Comment
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Mar 30 2016
  UC176225  Lithocarpus densiflorus A. A. Heller 1913-6-7 10798 Butte near Stirling 1074 Comment
  SEINET10904710  Lithocarpus densiflorus Mary Susan Taylor 1975-2-23 Taylor 391 Butte Ca. 3 mi E of Hwy 32, along a dirt road, ca. 5 mi N of Forest Ranch. Associates: Ceanothus prostratus, Arctostaphylos, Smilax californica, Pteridium aquilinum. Yellow Pine Forest. 671 Comment
  CHSC49845  Lithophragma campanulatum Vernon Oswald; Lowell Ahart 1990-4-9 4156 Butte Feather Falls Trail between Frey Creek and Wagners Valley. 475 Comment
  CHSC38675  Lithophragma parviflorum var. trifoliatum Vernon Oswald 1983-3-14 181 Butte Upper Bidwell Park Chico, on the north rim ca. 0.9 mi e of the power lines. 320 Comment
  CHSC65436  Lithophragma parviflorum var. trifoliatum Vernon Oswald 1983-3-14 170 Butte Upper Bidwell Park, Chico, on the north rim at the head of the ravine at the Rifle Range. 182 Comment
  CAS-BOT-BC317349  Lithospermum californicum Helen M. Edwards 1917-6-6 s.n. Butte DeSabla. Comment
  CHSC27840  Lithospermum californicum T. B. Devine 1977-6-5 426 Butte Beside Humbug Rd. Next to PG and E Flume. 853 Comment
  CAS-BOT-BC283389  Lolium multiflorum Lowell Ahart 1979-6-2 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  CHSC100991  Lolium multiflorum L. P. Janeway 2008-3-18 9235 Butte Cascade Range Foothills. East edge of City of Chico; south side of Humboldt Road 1.3 km northeast of Bruce Road. 123 Comment
  CHSC29762  Lolium multiflorum J. D. Jokerst 1980-4-21 629 Butte Along edges of vernal streams flowing into Coal Cr. Top of North Table Mt, N of Cherokee Rd. 381 Comment
  CHSC56829  Lolium multiflorum J. D. Jokerst 1980-4-22 Butte Along Hwy 32, 1.0 mi east of Chico. Comment
  CHSC46326  Lomatium caruifolium var. denticulatum Lowell Ahart 1989-5-23 6230 Butte Along the edge of a new subdivision road, 1/4 mile east of Dunstone Drive, about 1/2 mile north of Bangor Park Road, west of Bangor. 76 Comment
  UC625528  Lomatium caruifolium var. denticulatum Frank W. Gould 1938-4-23 311 Butte 2 mi. n. Chico 60 Comment
  UC765514  Lomatium caruifolium var. denticulatum R. F. Hoover 1937-5-18 2238 Butte 3 mi. n. Chico Comment
  HSC92492  Lomatium caruifolium var. denticulatum Jeanne MacFarland, Kathie Meyer & Anne Mullenniex 1995-4-9 57 Butte S of Paradise at intersection of Cherokee Rd and Pentz Rd. 381 Comment
  CHSC62411  Lomatium macrocarpum B. Castro 1987-5-21 115 Butte Ca 9 mi E of Chico via Hwy 32 and ca 2 mi E on Altatina Drive. 493 Comment
  CHSC102186  Lomatium marginatum var. marginatum George W. Hartwell 2009-4-4 Butte Concow Road, 3-4 miles above Concow Reservoir on a serpentine ridge and adjacent steep, rocky hillsides burned by summer wildfire in 2008. 860 Comment
  CHSC42624  Lomatium marginatum var. marginatum Vernon Oswald 1985-4-3 1695 Butte Concow Rd. n of Lake Concow. 792 Comment
  CHSC103740  Lomatium utriculatum Lowell Ahart 2010-5-16 16699 Butte About 1/2 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 364 Comment
  CHSC30824  Lomatium utriculatum M. S. Taylor; J. D. Jokerst 1980-4-18 2534 Butte On bluffs on e side of Humbug Rd, ca. 2 mi ne of Centerville. 457 Comment
  CHSC38740  Lomatium utriculatum Vernon Oswald 1983-3-7 131 Butte Upper Bidwell Park, Chico, beside the South Rim Trail at about the level of Alligator Hole (0.15 mi w of the power lines). 128 Comment
  CHSC83905  Lomatium utriculatum Lowell Ahart 2003-4-10 10067 Butte On the top of cliffs, on the east rim of South Table Mountain, about 2 1/2 miles (air) north of Oroville. 332 Comment
  CHSC94926  Lomatium utriculatum K. Lang; Classmates 2005-3-1 Butte Table Mountain. Comment
  JEPS103289  Lonicera hispidula var. vacillans Lowell Ahart 2002-9-8 9932 Butte On the west side of the paved road, about 1/4 mile south of the first parking spaces at the Feather Falls Trailhead, about 1 3/4 miles north by road from the town of Feather Falls. 854 Comment
  CAS-BOT-BC240689  Lonicera interrupta Lewis S. Rose 1945-5-12 45034 Butte Richardson Springs 304 Comment
  CHSC46471  Lonicera involucrata var. involucrata Vernon Oswald 1989-6-19 3808 Butte Road between Fall River and Cascade, ca. 7.5 mi (air) NNE of Feather Falls. 1219 Comment
  UC81117  Lotus crassifolius Mrs. R. M. Austin Jun 1899 390 Butte n of Chico (Humboldt road) Comment
  RSA719534  Lotus denticulatus Michael A. Vincent, K. Levings, Karl Vincent 2006-7-29 12877 Butte East of Chico along Route 32. Comment
  JEPS117542  Lotus micranthus Lowell Ahart 2010-6-9 16778 Butte Along the sides and in the center of the poor dirt road, about 100 yards east of the fence, about 150 yards east of where you park, east of Cherokee Road, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 384 Comment
  SEINET12161334  Lotus micranthus Unknown 1978-1 19 Butte ca 15.4 mi NE of Chico and 5ft S of Cohasset Hwy. Richardson Springs Quad. NW corner of Sec. 18 280 Comment
  UC1609037  Lotus nevadensis Lowell Ahart 1993-7-31 7135 Butte 1.5 mi se Bald Mountain (ne of Stirling City, on the w side of the dirt road) 1493 Comment
  CDA31938  Lotus nevadensis var. nevadensis L. Ahart 2008-5-12 14729 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 40 yards east of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam. Comment
  JEPS87154  Lotus nevadensis var. nevadensis Lowell Ahart 1992-8-2 6911 Butte about 0.5 mi n Flea Valley (e of intersection, about 4.5 air mi ne of Concow Reservoir) 1158 Comment
  SEINET3694432  Lotus oblongifolius var. torreyi E. B. Copeland 1930-7-11 420 Butte Jonesville 1500 Comment
  POM253436  Lotus unifoliolatus A. H. Heller 1938-7-20 15289 Butte 7 miles east of Chaparral. 1524 Comment
  POM27894  Lotus wrangelianus C. C. Bruce 1897-04 2089 Butte Chico Comment
  CDA36456  Ludwigia decurrens M. Stewart & C. Mutters 2011-9-13 PDR# 1373328 Butte South-southwest of Richvale. 0 Comment
  UCD65988  Ludwigia hexapetala B. J. Grewell; Steve Cordes 2005-9-27 05- 23 -LU Butte Upper Butte Wildlife Area, Llano Seco Unit, California Dept. of Fish and Game. 1521 acre wetland area, near intersection of Seven Mile Lane and Nelson Road. 32 Comment
  UC865565  Lupinus A. A. Heller 1915-5-4 11866 Butte two mi e Durham Comment
  CHSC48520  Lupinus albicaulis Vernon Oswald 1984-5-23 1205 Butte Calif. Hwy 70 at Heinz Creek, 0.5 mi n-e of Poe Power House. 463 Comment
  SEINET10874088  Lupinus albicaulis Mary Susan Taylor 1982-6-24 Taylor 4747 Butte T22N R4E se/se sec 1. Pulga quad. On serpentine on Rocky Ridge, both sides of Ponderosa Way (Rim Rd), 6.1 mi n of Jarbo Gap on Hwy 70, ne of Oroville. 2700 ft. 823 Comment
  SEINET194860  Lupinus albicaulis A. A. Heller 1941-5-22 16138 Butte About a half a mile west of Jarboe Pass on State Highway 24, on the edge of a wooded slopes Comment
  SEINET10544020  Lupinus albicaulis subsp. shastensis Mary Susan Taylor 1981-5-5 Taylor 3609 Butte T20n,r63,sec.2 sw 1/4. Forbestown quad. W side of spur road, ca 1.5 air mile nw Of its junction with bryant ravine road (21n35y), ca 1 air mile n of feather Falls community. Assoc.; Galium bolanderi, rubus glaucifolius 792 Comment
  RSA712785  Lupinus albifrons var. albifrons L. P. Janeway, B. Castro 1994-4-21 4644 Butte Northern High Sierra Nevada. At end of south-trending spur ridge at western end of Watson Ridge about 2.0 mi east-northeast of Bald Rock Dome. 1052 Comment
  CHSC87797  Lupinus arbustus Paul Maslin 2004-4-15 14 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10611542E 4411104N. 548 Comment
  CHSC90494  Lupinus bicolor Stacy Scott 1981-4-24 6 Butte About 1.3 km north of Eaton Road, 100 m east of Cohasset Hwy along Sheep (Grizzly) Hollow; about 7 km north-northeast of Chico. 190 Comment
  JEPS103396  Lupinus bicolor Lowell Ahart 2002-4-14 9488 Butte Nelson, between the Railroad and the Midway Road, 50 yds N of Nelson Dlavo Road 36 Comment
  UCD107231  Lupinus bicolor A. A. Heller 1915-4-12 11817 Butte Butte County. 14 miles northeast of Chico near Rock creek. Comment
  CHSC108960  Lupinus bicolor var. pipersmithii Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17865 Butte On the south side of the paved road, east of the Deer Pen, between Tables 12 and 13, Lower Bidwell Park, Chico. 65 Comment
  CHSC106867  Lupinus bicolor var. tridentatus Lowell Ahart 2011-5-1 17340 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
  UCD107753  Lupinus formosus L. E. Hazeltine 1916-7-16 18 Butte Appleton. Comment
  RSA31972  Lupinus formosus var. robustus A. A. Heller 1942-5-18 16478 Butte A short distance west of the Hooker Oak, east of Chico. Comment
  SEINET10490331  Lupinus grayi Taylor 1978-7-19 Taylor 1783 Butte On e side of upper scotts john road, about 2 mi n of its junction with scotts John road, about 6 mi ne of jonesville. 1890 Comment
  CHSC46453  Lupinus lepidus var. sellulus V. Oswald 1989-6-27 3821 Butte Humbug Rd at Butte Creek House, ca. 3.3 mi (air) se of Jonesviile. 1767 Comment
  CHSC60982  Lupinus lepidus var. sellulus Lowell Ahart 1993-6-26 7042 Butte About 1/4 mile north of Jackass Flat, Mooreville Ridge, about 1 1/4 miles (air) north-west of Lost Creek Reservoir. 1188 Comment
  CHSC90013  Lupinus microcarpus Peggy Fain 1991-4-21 25 Butte Along Richardson Springs Road, ca. 1 km. from Cohasset Highway. 152 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
  SBBG121558  Lupinus nanus L. P. Janeway 2006-5-24 8607 Butte near E shores of Lake Wyandotte, ca. 7.0 air km ESE of Oroville Dam 422 Comment
  CHSC3227  Lupinus nanus var. apricus Virignia Hagaman 1966-3-28 218 Butte On top of Table Mountain. Comment
  CHSC3935  Lupinus nanus var. apricus J. Senter 1967-4-10 17 Butte Located on Skyway turnout 4.5 mi. E. of Hwy. 99E. 396 Comment
  JEPS105664  Lupinus nanus var. vallicola L. P. Janeway, John Hunt, Adam Henderson 2003-5-29 7800 Butte Northern High Sierra Nevada. Steep northwest-facing slope just above the Middle Fork Feather River arm of Lake Oroville; 5.1 km west-southwest of mouth of Frey Creek 287 Comment
  JEPS117287  Lupinus polyphyllus var. burkei Lowell 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 1917 Comment
  SEINET10489014  Lupinus succulentus Mary Susan Taylor 1982-4-28 Taylor 4354 A Butte Pennington quad. Corolla blue. Graylodge waterfowl refuge, n side of Rutherford rd, ca 1.8 mi w of its jct with pennington rd at the checking Station, ca 12 mi sw of gridley. With brassica nigra, hemizonia parryi rudis. 21 Comment
  SEINET10490269  Lupinus superbus var. elongatus Edwin B. Copel 1930-7-11 Copeland s.n. Butte Jonesville. Abundant in and about springs. This matches heller's type Collection of l. Elongatus greene very perfectly. It is somewhat less hairy Than the type collection of l. Superbus. The leaflets of the larger leaves are Commonly nine; if there were ten, it would be l. Polyphyllus lindl., As Sometimes found in california. 1500 Comment
  RSA43304  Lupinus vallicola subsp. vallicola W. I. Follett 1948-6-1 s.n. Butte Hwy 24, 6.2 miles N of W Branch Feather River Comment
  SEINET10839432  Luzula campestris Lowell Ahart 1983-8-16 Ahart 4295 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
  CHSC52705  Luzula cascadensis L. P. Janeway 1987-6-13 2207 Butte Along Dogwood Creek; road to Mayaro 2.4 mi E of Concow Road. 990 Comment
  UC600808  Luzula cascadensis H. F. Copeland 1920-7-29 71 Butte Scotch John Meadows, Jonesville Comment
  UC1609496  Luzula comosa Vernon H. Oswald and Lowell Ahart 1993-4-21 5289 Butte ca. 2.25 (air) mi. n.w. Magalia (Middle Butte Creek Trail on w. side of creek & on upstream side of Ponderosa Way); Middle Butte Creek Trail 707 Comment
  CAS-BOT-BC436646  Luzula comosa var. laxa H. F. Copeland 1920-7-11 71 Butte Scotch John Meadows 1828 Comment
  UC600796  Luzula comosa var. laxa H. F. Copeland 1930-7-25 Butte Jonesville Comment
  JEPS113269  Luzula comosa var. subsessilis Lowell Ahart 2007-5-29 13951 Butte On the north side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 100 yards northeast of 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) northea 844 Comment
  CHSC12182  Luzula macrantha Lowell Ahart 1973-2-21 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC31908  Luzula macrantha L. Ahart 1975-3-18 709 Butte Along edge of North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC52713  Luzula macrantha L. P. Janeway; R. A. Schlising, B. Castro 1987-4-4 1970 Butte Southeast shore of Paradise Lake; generally NW facing slopes ca 50 ft above the water level. 777 Comment
  CHSC94067  Luzula macrantha R. Fischer 2005-3-9 745 Butte Sierra Nevada foothills, off Hwy. 32, about 4 miles east of Chico off 10 Mile House Road in Bidwell Park. Collection made at bottom of trail near Big Chico Creek from the grassy edge of the riparian zone. 219 Comment
  CHSC98955  Luzula macrantha Lowell Ahart 2008-5-8 14724 Butte Below the high water line of Lake Oroville, about 50 yards south of the poor parking area, McCabe Creek area, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville. 264 Comment
  JEPS120153  Lycopersicon esculentum Lowell Ahart 2012-10-20 18507 Butte On the south side of Big Chico Creek, about 100 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC43685  Lycopus americanus Vernon Oswald 1985-6-26 1864 Butte Oroville Wildlife Area on the e side of the outlet of Thermolito Afterbay. 42 Comment
  SEINET10498036  Lycopus americanus Lowell Ahart 1991-9-14 Ahart 6717 Butte On the edges of a ditch, between the two large reservoirs, Joie Osgood Ranch, about 2 miles east of Honcut. Valley Grassland. T17N R4E S/C/S14. 46 Comment
  SEINET10498037  Lycopus americanus Mary Susan Taylor 1975-10-3 Taylor 934 Butte Ca. 1/4 mile N of the Washout, between River Road and the Sacramento River, ca. 10 mi W of Chico. Riparian Woodland and sloughs, wet and humid. 37 Comment
  CHSC30953  Lythrum hyssopifolia L. Ahart 1980-7-4 2456 Butte Near the Oak Grove Cemetary, ca. 1/2 mi se of Hurleton. 600 Comment
  CHSC46641  Lythrum hyssopifolia Lowell Ahart 1989-7-4 6364 Butte Growing in a mined over area south of Oregon Gulch Road, about 1/4 mile north-west of the Cemetary, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. 335 Comment
  JEPS120840  Lythrum hyssopifolia Lowell Ahart 2013-7-9 18833 Butte South side of North Honcut Creek, west of the steel power line, about 2 air miles northeast of Honcut, about 13 air miles southeast of Oroville. Comment
  CAS-BOT-BC342653  Madia citriodora Bruce G. Baldwin; Vern Oswald 1988-6-16 715 Butte Upper Bidwell Park, south side of Big Chico Creek, just above police pistol range 91 Comment
  CAS-BOT-BC342719  Madia elegans M. S. Taylor 1982-6-24 4732 Butte Around large landing on saddle of ridge se of Flea Mt, n of Pulga, ca. 5 air mi e of Magalia 1097 Comment
  JEPS115612  Madia elegans Lowell Ahart 2009-5-23 15726 Butte About 60 yards northwest of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 2/3 mile (air) west of Highway 32, about 10 miles northeast of Chico 267 Comment
  SFV4040  Madia elegans subsp. densifolia M. L. Vincent 1962-9-13 287 Butte 3 miles west of Centerville on Humbug Road. 140 Comment
  CHSC30038  Madia exigua L. Ahart 1980-5-17 2307 Butte A little east of the Oak Grove Cemetary, ca. 1/2 mi se of Hurleton. 600 Comment
  JEPS115872  Madia exigua Lowell Ahart 2009-5-23 15757 Butte About 10 miles northeast of Chico, Upper Bidwell Park, about 1/4 mile west of the intersection of Highway 32 and Ten Mile House Road. On the south side of Guardians Trail, about 50 yards west of Ten Mile House Road 381 Comment
  JEPS124028  Madia exigua Lowell Ahart 2015-6-16 20231 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
  CHSC97018  Madia gracilis L. P. Janeway 2007-7-26 9072 Butte Northern High Sierra Nevada. Plumas National Forest; about 160 m. west of the French Creek Road crossing of French Creek near the mouth of Ram Creek. 622 Comment
  JEPS122082  Madia gracilis Lowell Ahart 2014-7-7 19566 Butte About 5 yards east of the Skyway, about one-mile north of Stirling City. Comment
  RSA755648  Madia gracilis L. Ahart 2009-5-23 15722 Butte North side of Ten Mile House Road, Upper Bidwell Park, about 1/2 air mile southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 311 Comment
  UC202669  Madia gracilis A. A. Heller 12816 Butte Butte Meadows 1402 Comment
  CAS-BOT-BC512737  Maianthemum stellatum C. R. Quick 1953-8-11 53 -99 Butte Rag Dump meadow south east of Stirling City Comment
  CHSC116212  Malacothrix floccifera Lowell Ahart 2015-6-16 20241 Butte On the northwest side of the paved road, 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. 1301 Comment
  SD8992  Malacothrix floccifera Mrs. R. M. Austin 1883-1 Butte Comment
  SEINET10475292  Malacothrix floccifera Mary Susan Taylor 1981-5-21 Taylor 3793 A Butte T23N R5E se sec 21, Pulg quad. E side of Mayaro Rd, ca. 0.5 mi N of Mayaro, ca. 2 mi N of Pulga on Feather River Hwy 70. In decompoed granite gravel embankment; openings of Yellow Pine Forest; 2000 ft. 610 Comment
  SEINET10872007  Malacothrix floccifera Lowell Ahart 1984-6-8 Ahart 4670 Butte At the Ponderosa Dam, ca. 2 mi NW of Forbestown; Yellow Pine Forest; 370 m. 370 Comment
  CHSC65465  Malus Vernon Oswald 1988-5-30 3346 Butte Butte Creek Canyon Ecological Reserve e of Hwy 99 between Butte Creek and Durham Mutual Ditch. 70 Comment
  CHSC45328  Malva neglecta Vernon Oswald 1983-10-10 1058 Butte City of Chico Sewage Treatment Plant on Chico River Rd., 1/4 mi w of its jct with Alberton Ave. Comment
  CDA38776  Malva nicaeensis L. Ahart, Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17909 Butte On the north side of the path, near the sign, near of intersection of Vallombrosa Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. Comment
  JEPS119992  Malva nicaeensis Lowell Ahart, Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17909 Butte Near the intersection of Valllombrosa Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. Comment
  CHSC109059  Malva parviflora Lowell Ahart; Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17915 Butte On the south side of the path, near Table 17, on the north side of Centennial Avenue, Lower Bidwell Park, Chico. 80 Comment
  CAS-BOT-BC277734  Malvella leprosa Steven R. Hill; et al. 2010-7-17 38546 Butte Along west side of Aquas [Aguas] Frias road, 150 feet north of junction with Afton Road; about 4-5 kilometers south of CA Route 162; 12.4 kilometers west of Biggs 22 Comment
  CHSC51058  Marah watsonii Pauleen Broyles 1987-4-29 1014 Butte The Nature Conservancy Vina Plains Preserve. Comment
  UC196259  Marah watsonii A. A. Heller 1914-4-27 11328 Butte 8 mi n Oroville Comment
  CDA31968  Marrubium vulgare L. Ahart 2009-6-12 15845 Butte 10 yards north of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC38515  Medicago arabica Vernon Oswald 1983-5-2 419 Butte Upper Bidwell Park, Chico, beside the dirt road which leads to the Police Pistol Range on the s edge of the Golf Course. 91 Comment
  CHSC96248  Medicago arabica R. Fischer 2006-4-25 1001 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east -side addition along Hwy. 32. Plants growing at the southern end of reserve on the west facing hillside in small openings adjacent seasonal springs. 304 Comment
  CHSC109176  Medicago lupulina Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18000 Butte On the west side of the horse path, about 20 yards north of the paved park road, west of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  JEPS119755  Medicago lupulina Lowell Ahart 2012-5-14 18062 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. Comment
  CHSC21008  Medicago polymorpha M. S. Taylor 1975-4-25 504 Butte Ca. 20 mi ne of Chico on Cohasset Hwy, ca. 1/2 mi n of Horse trough. Comment
  CHSC949  Medicago polymorpha A. Koopman 1929-4-25 Butte Butte Creek. 76 Comment
  HSC32649  Medicago polymorpha Patricia Datzman 1974-4-20 17 Butte 300 yards S of intersection of Pentz Rd. and Clarke Rd. Comment
  CHSC101314  Medicago praecox Lowell Ahart 2009-4-22 15575 Butte West side of Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  JEPS94773  Medicago praecox Lowell Ahart 1998-4-8 7947 Butte 1/4 mi ne of Oroville (w of dirt road, 1/10 mi n of the Thermalito Diversion Dam, e of the Thermalito Diversion Pool) 67 Comment
  CDA13252  Melica aristata G. F. Hrusa, T. D. Wilfred 1996-7-8 13100 Butte Plumas National Forest; Occasional perennial in shaded forest understory. Near Old Railroad Grade Rd., Paradise Lake Dam, approx. 3 m. N of Magalia. Comment
  CAS-BOT-BC269381  Melica californica A. A. Heller 1915-4-20 11860 Butte 7 miles below Centerville in the Sierra foothills 76 Comment
  SEINET10926809  Melica californica A. Arthur Heller 1918-5-5 Heller 13012 Butte Near Magalia in the yellow pine and oak belt (Q. kelloggii) on serpentine, where Cupressus macnabiana is locally plentiful, the common shrubs Ceanothus cuneatus and Eriodictyon. Comment
  CHSC110224  Melica californica var. californica L. P. Janeway 2012-6-2 10837 Butte Northern High Sierra Nevada. Plumas National Forest; eastern slope of Bloomer Hill, 1.0 air km east of the top. 701 Comment
  JEPS106168  Melica harfordii Lowell Ahart 2004-6-22 11112 Butte On the east margin of a gravel road, road leads to Butte Creek, south of Doe Mill Road, about 1/8 mile southwest of the bridge across Butte Creek, about 2 miles (air) southeast of Forest Ranch, about 5 miles (air) west of Stirling City 692 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
  CHSC42926  Melica torreyana Lowell Ahart 1987-7-3 5752 Butte Along the edge of Poe Power House Road, about 1 mile north-west of the Poe Power House, about 1 mile south-east of Jarbo Gap. 487 Comment
  CHSC31836  Melilotus albus L. Ahart 1978-7-15 1788 Butte Along edges of North Honcut Creek, Peter Ahart Ranch, Honcut. 50 Comment
  CHSC31880  Melilotus indicus L. Ahart 1977-5-22 1398 Butte Along the edges of North Honcut Creek, Peter Ahart Ranch. 50 Comment
  CHSC757  Mentha canadensis V. Holt; M. Underhill 1952-7-9 Butte 56 Comment
  CHSC760  Mentha spicata V. Holt; M. Underhill 1952-7-21 Butte 152 Comment
  SBBG128021  Mentha spicata L. Ahart 2011-8-17 17624 Butte ca. 20 yards S of the trail, S of the crossing and on the E side of Big Chico Crk, ca. 50 yards W of Ten Mile House Rd, Upper Bidwell Park, ca. 0.75 mi W of Hwy 32, ca. 10 mi NE of Chico 203 Comment
  NY112245  Mentzelia laevicaulis A. A. Heller 1914-8-13 11682 Butte Hills 8 miles north of Oroville. Comment
  SEINET10497356  Mertensia ciliata var. stomatechoides Mary Susan Taylor 1978-7-19 Taylor 1755 Butte On W side of Upper Scotts John Road, ca. 2 mi N of its junction with Scotts John Road, ca. 4 mi E of Jonesville. 1829 Comment
  CAS-BOT-BC428759  Micranthes californica Mrs. C. C. Bruce 1897-3-1 2042 Butte Little Chico Comment
  CHSC108869  Micranthes californica Lowell Ahart 2012-3-23 17785 Butte On the sides of the trail down to Big Chico Creek, about 70 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. 202 Comment
  CHSC44352  Micranthes nidifica Lowell Ahart 1988-3-28 5949 Butte Along a small stream, about 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
  CHSC64220  Micranthes oregana S. C. Morey 1983-8-2 677 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CAS-BOT-BC348320  Micropus californicus Lowell Ahart 1980-4-30 2137 Butte Along Swedes Flat Road, near Bangor 320 Comment
  SEINET10904843  Micropus californicus Mary Susan Taylor 1986-5-6 Taylor 5617 Butte Butte County; Along Cohasset Hwy, Between Monk's Store and Horse Trough, ca. 8-10 mi NNW of Chico. Foothill woodland. With Vern Oswald and Lowell Ahart. 1200 ft. 366 Comment
  CHSC101220  Micropus californicus var. californicus G. F. Hrusa; R. Gross, L. Houser 2008-4-11 17094 Butte Open, chaparral slopes with woodland on N faces immediately below Indian Valley Reservoir spillway into North Fork Cache Creek tailrace. 396 Comment
  CHSC46960  Micropus californicus var. californicus Lowell Ahart 1974-4-7 359 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC8146  Micropus californicus var. californicus J. G. Moore 1969-4-13 78 Butte Pentz Rd., 200 yds. e of Hwy 99, on s side of road. 60 Comment
  CHSC90594  Micropus californicus var. californicus J. Lund 1980-4-18 66 Butte About 3 mi north of Chico, 0.9 mi east of Hicks Lane on the south side of Keefer Road, approximately 50 ft from the edge of the road. 91 Comment
  CHSC101080  Microseris acuminata Lowell Ahart; John Dittes 2009-3-20 15516 Butte Open area west of the Guardian Rock Trail, about 175 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Chico. 407 Comment
  CHSC26714  Microseris acuminata M. P. Hayes 1978-4-7 153 Butte On buttes at the Butte College campus on the corner of Pentz and Clark roads. 150 Comment
  CHSC48185  Microseris douglasii subsp. douglasii Vernon Oswald 1988-5-2 3293 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. Along the west fence line. 54 Comment
  SEINET10837198  Microsteris gracilis Mary Susan Taylor 1975-3-10 Taylor 409 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
  CHSC96952  Mimetanthe pilosa Lowell Ahart 2007-7-8 14270 Butte On the north side of North Honcut Creek, Peter Ahart Ranch, about 3/4 miles north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 45 Comment
  JEPS32710  Mimulus aurantiacus var. grandiflorus Lewis S. Rose 1963-6-2 63079 Butte Rock Creek North Fork of Feather River 640 Comment
  CDA14055  Mimulus bicolor G. F. Hrusa, T. D. Wilfred 1997-5-1 13702 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Comment
  RSA29027  Mimulus bicolor Lincoln Constance 1941-5-28 2831 Butte South Branch of the Feather River at Magalia, Sierra Nevada foothills. 488 Comment
  SEINET10570196  Mimulus bifidus Melvin L. Conrad, David B. Dunn; Douglas G. LeDoux 1973-6-5 Conrad 7043 Butte Jarbo pass on hwy 70. Yellow pine, california buckeye, and shrubby lupine, woody Plant, corolla apricot color. 701 Comment
  SEINET10570207  Mimulus breweri Mary Susan Taylor 1978-7-19 Taylor 1775 Butte On E side of Upper Scotts John Road, ca. 3 mi N of its junction with Scotts John Road, ca. 7 mi E of Jonesville. 1890 Comment
  POM43822  Mimulus douglasii C. C. Bruce 1897-01 2100 Butte Chico. Comment
  JEPS115821  Mimulus glaucescens Lowell Ahart 2009-4-26 15644 Butte In a wet drainage, on the west side of Guardians Trail, about 300 yards southwest of Pine Trail, Upper Bidwell Park, about 5/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  JEPS29841  Mimulus glaucescens Rimo Bacigalupi and L. R. Heckard 1962-6-1 8585 Butte 1 mi below and w Paradise (along Honey Run Road, in upper reaches of canyon); Butte Creek canyon 365 Comment
  SEINET10830513  Mimulus glaucescens Mary Susan Taylor, Vernon H. Oswald 1984-4-4 Taylor 5383 Butte T22N R2E nw sec 25. N side of Humbug Rd, ca. 0.5 mi E of Honey Run Covered Bridge, ca. 6 air mi E of Chico. Foothill Woodland; 600 ft elev. 183 Comment
  HSC32415  Mimulus guttatus Kitsy Kelly 1974-4-20 27 Butte Table Mtn. Volcanic area Comment
  JEPS86890  Mimulus guttatus David M. Thompson 1988-6-8 938 Butte 0.1 mi nw Hwy 70 (along Pulga Road (Pulga Road leaves Hwy 70 at w side of Feather River bridge)) 500 Comment
  RSA754820  Mimulus guttatus L. Ahart 2009-6-19 15926 Butte 30 yards south of the fence and about 100 yards E 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
  SEINET10570356  Mimulus guttatus Mary Susan Taylor 1975-4-26 Taylor 534 Butte Kunkle Reservoir, ca. 500 yds E of Pentz-Magalia Hwy, ca. 1 m SE of Paradise. With Orthocarpus erianthus, Centaurea solstitus, Lupinus bicolor, Typha latifolia. 610 Comment
  SEINET8269133  Mimulus guttatus C. E. Wickstrom 1964-3-3 15 Butte north rim of Big Chico Creek Canyon, vic. of Salmon Hole, upper Bidwell Park; Cico. Comment
  UC725754  Mimulus latidens A. A. Heller 1940-5-13 15615 Butte 3 mi w Chico (on State Highway #32) Comment
  RSA535437  Mimulus layneae David M. Thompson 1988-6-8 937 Butte 0.2 mi E of Zinc Road (S jct) along Bald Rock Road. 750 Comment
  POM193322  Mimulus primuloides var. pilosellus E. B. Copeland 1929-7-13 459 Butte Jonesville. 1550 Comment
  UC478470  Mimulus pulsiferae E. B. Copeland 1931-7-6 687 Butte by Jones Creek; Jonesville 1500 Comment
  UC1552175  Mimulus torreyi Barbara Ertter 1988-6-19 7647 Butte ca 1/2 mi sw Jonesville (on road to Butte Meadows, n tip of Butte Co.) 1524 Comment
  JEPS86879  Mimulus tricolor David M. Thompson with Lowell Ahart 1988-3-22 849 Butte n Honcut (Peter Ahart Ranch (entrance 1.2 mi n of Honcut Store along Ahart Road), 1 mi e of ranch gate, then 0.5 mi n) 36 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
  CHSC38293  Minuartia californica Vernon Oswald 1983-2-20 91 Butte Upper Bidwell Park, Chico, on the north rim at the level of the w end of Horseshoe L. 128 Comment
  RSA20869  Minuartia californica C. B. Wolf 1937-3-29 8330 Butte Sacramento Valley, 1/2 mile SE of Butte Creek on Chico-Oroville Rd 58 Comment
  RSA715728  Minuartia californica L. P. Janeway 2005-3-1 8341 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Rd. 1.8 km northeast of Bruce Road. 134 Comment
  CHSC93347  Minuartia cismontana Lowell Ahart 2006-5-3 12556 Butte Basalt outcrops, about 1/4 mile north of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 409 Comment
  POM101121  Minuartia douglasii C. C. Bruce 1897-06 1958 Butte Fields near Chico. Comment
  SEINET10899189  Minuartia douglasii Mary Susan Taylor 1981-5-7 Taylor 3644 Butte T20N R6E se/se sec 25, Clipper Mills quad. Along spur rd, ca. 0.5 mi SE of its jct with Fields Ridge Rd-20N24.6, ca. 3 air mi S of Feather Falls community. Yellow Pine Forest; 3200 ft. 975 Comment
  CHSC30060  Moenchia erecta L. Ahart 1980-5-4 2192 Butte East of the Oak Grove Cemetery, ca. 3/4 mi se of Hurlton. 600 Comment
  CHSC42118  Mollugo verticillata Lowell Ahart 1986-11-14 5478 Butte On the drying margins of a pond, about 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville. 36 Comment
  JEPS115646  Mollugo verticillata Lowell Ahart 2009-8-13 16274 Butte In the channel, about 100 yards east of the diversion structure that controls Mud Creek diversion and Lindo Channel, northeast of Hooker Oak, Upper Bidwell Park, Chico 68 Comment
  CHSC65565  Monardella breweri subsp. lanceolata R. Banchero 1981-6-16 508 Butte Ca. 0.9 mi SE of Cohasset School. 768 Comment
  UC1562432  Monardella breweri subsp. lanceolata Lowell Ahart 1990-5-25 6496 Butte Near the high water line of the Lake Oroville, about 1/4 mile west of the Enterprise Boat Launch Area, about 1 1/4 miles northwest of the of the Enterprise Bridge across Lake Oroville 277 Comment
  POM252836  Monardella lanceolata var. lanceolata A. A. Heller 1938-7-2 15244 Butte West of Arch Rock Tunnel on Feather River Hwy. Comment
  UC104639  Monardella odoratissima subsp. pallida Mrs. R. M. Austin 1896-7-1 289 Butte Colby Comment
  CAS-BOT-BC220449  Monardella sheltonii L. P. Janeway 1988-6-19 2821 Butte Ca 200 ft above Honey Run Rd, 2.6 mi from Humbug Rd 274 Comment
  CHSC768  Monardella sheltonii R. M. Staley 1952-7-1 Butte Honey Run. 243 Comment
  JEPS113188  Monardella sheltonii Lowell Ahart 2007-5-29 13940 Butte On the east side of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 3/4 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Bi 585 Comment
  POM61383  Monardella sheltonii Helen M. Edwards 1917-6-6 s.n. Butte De Sabla. Comment
  RSA70492  Monardella sheltonii C. C. Bruce 1898-05 2452 Butte Chico Creek. [county uncertain: not specified on voucher label] Comment
  RSA71308  Monardella sheltonii L. S. Rose 1951-6-26 51019 Butte Jarboe Pass. 22 mi. n. of Oroville 579 Comment
  UCD125285  Monardella viridis L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  SEINET8555279 Image available Monochoria vaginalis J. M. Tucker, B. J. McCaskill, W. A. Harvey 1954-9-15 2753 Butte In experimental rice plots, Biggs Rice Station Comment
  CHSC56082  Montia fontana subsp. chondrosperma L. P. Janeway; R. A. Schlising 1988-7-16 3013 Butte Along Willow Creek, 1 mi west of Humbug Summit Road. In moss at seep next to creek. 1798 Comment
  CHSC97378  Montia fontana subsp. chondrosperma Paul Maslin 2006-3-17 38 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 1061036E 4412565N. Comment
  CHSC70768  Montia linearis Vernon Oswald 1998-3-11 8888 Butte Northern Sacramento Valley, Wurlitzer Unit, Vina Plains Preserve. Uncommon along the north fence line just east of gate on Haille Rd. 57 Comment
  POM101999  Montia parvifolia Mrs. R. M. Austin 1883-05 19 Butte Chico Creek Comment
  SEINET10572673  Montia parvifolia Mary Susan Taylor 1976-5-5 Taylor 1114 Butte Abundant along creek, ca. 5 ft S of Hwy 70, ca. 20 mi NE of Oroville; granitic soils. Comment
  SD8156  Montia verna Mrs. R. M. Austin 1883-1 Butte Butte Co Comment
  CHSC108765  Morus alba L. P. Janeway 2011-5-9 10252 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
  CHSC117749  Morus alba Lowell Ahart 2016-10-25 21374 Butte On the west side of a ditch, about 50 yards south of the Little Pump, Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 30 Comment
  SEINET10605684  Muhlenbergia andina Lowell Ahart 1987-6-9 Ahart 5740 Butte On dry sand, around rocks, on the west side of the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  UC1609245  Muhlenbergia filiformis Lowell Ahart 1993-7-6 7047 Butte on s side of dirt road about 1/4 mi w Lost Creek Reservoir 1036 Comment
  SEINET10508182  Muhlenbergia filiformis Lowell Ahart 1985-10-12 Ahart 5198 Butte Near the east side of Kunkle Reservoir, about 2 miles south of Paradise. 503 Comment
  SACT001603  Muhlenbergia repens Herbert Copeland 1929-6-9 Butte In dry open places. 1500.0 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
  SEINET10536214  Myosurus minimus Mary Susan Taylor 1974-4-24 Taylor 187 Butte Junction of Broyles Road and Hwy 99, ca. 9 mi N of Chico. Valley Grassland. 61 Comment
  CHSC49675  Najas guadalupensis V. Oswald 1988-6-8 3360 Butte Small pond in the Oroville Wildlife Area on the west side of the Feather River slightly north of the level of Cherry Ave. 32 Comment
  UCD39223  Najas guadalupensis subsp. guadalupensis Beecher Crampton 1957-9-17 4629 Butte 5 miles northwest of Biggs. Comment
  CHSC48464  Nama lobbii Vernon Oswald 1983-7-19 885 Butte Bull Hill Rd. 2.6 mi s of Butte Meadows. 1493 Comment
  CHSC3169  Narcissus pseudonarcissus Dona Kingsford 1966-3-12 Butte Yard at 528 W. 3rd. Street, Chico. Comment
  CDA34496  Nasturtium officinale Stewart, Michael 2011-4-26 PDR# 1373326 Butte In the vicinity of Gridley, on Locust Street near Georgia and Idaho Street. Comment
  LA206701  Navarretia divaricata E. B. Copeland; 1930-7-17 443 Butte Jonesville 1550.0 Comment
  CHSC113386  Navarretia divaricata subsp. vividior Lowell Ahart 2014-7-2 19551 Butte Depressions on the sides of the poor road, east of cow corral, about 200 yards north of the County Road, about one mile west of the intersection of County Road and Lumpkin Road, about 7 miles northeast of Feather Falls. 1281 Comment
  CHSC44334  Navarretia divaricata subsp. vividior Lowell Ahart 1979-5-29 1906 Butte Along the edge of a dirt road, about 1/2 mile east of Kunkle Creek, about 2 1/2 miles south-east of Paradise. 457 Comment
  CHSC33252  Navarretia filicaulis M. Banchero 1979-9-2 28 Butte 6 mi NE Forest Ranch on Hwy 32; on roadside fill. Comment
  UC133843  Navarretia filicaulis Mrs. R. M. Austin 1883-1 Butte Comment
  JEPS126592  Navarretia heterandra Lowell Ahart 2016-5-24 20846 Butte About 200 yards west of Loma Rica Road, about 250 yards southwest of the intersection of Loma Rica Road and La Porte Road, about 3 1/2 miles (air) northeast of Honcut. Comment
  SEINET10837199  Navarretia intertexta Mary Susan Taylor 1975-6-25 Taylor 799 Butte Richardson Springs on Mud Creek, ca. 3 mi NE of Cohasset Hwy, ca. 6 mi N of Chico, ca. 1 mi NE of the Hotel at the Springs. With Gary Jones. 244 Comment
  SEINET7072733  Navarretia intertexta subsp. intertexta A. G. Vestal 1963-5-9 s.n. Butte About 11 miles southeast of Chico on Route 99. UTM Zone 10, 612125mE, 4386570mN. Coordinate datum: NAD 27.) Comment
  CHSC61001  Navarretia 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. 1158 Comment
  CHSC26882  Navarretia leucocephala M. S. Taylor 1974-4-20 182 Butte Richardson Springs, ca. 6 mi n of Chico, ca. 10 yds off side of road. Comment
  CHSC7090  Navarretia leucocephala R. Smallwood 1969-5-1 3 Butte 20 yds. e of main entrance to Chico Municipal Airport, on Cohasset Highway 3 mi ne of Chico. 36 Comment
  UCD80645  Navarretia pubescens CNPS SN Foothill Team 2005-5-28 SNNR 0207 b Butte City of Chico, Upper Bidwell Park, on the east side of Big Chico Creek where the plateau above the creek ends. 159 Comment
  CHSC28860  Navarretia tagetina J. D. Jokerst 1979-5-18 463 Butte Top of North Table Mt, ca 400 met NW of jct of E edge of Mt and Cherokee Rd. Comment
  UC1719847  Navarretia tagetina David Fruchter 1979-5-28 s. n. Butte Richvale (N of Corning) Comment
  UCD18876  Navarretia tagetina Vernal Pool Team 2001; Carol Witham and Jennifer Buck 2001-5-3 184 Butte off of Hwy 99, 2 mi. north of its intersection with Hwy 149, Book Family Farm, Book Ranch Site, pool # BOO072, UTMs: 10S0611198; 4386920. Comment
  SEINET10938893  Nemacladus capillaris Lowell Ahart 1985-6-17 Ahart 5059 Butte Lumpkin Ridge, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. Comment
  SEINET260327 Image available Nemacladus interior Lowell Ahart 1988-7-3 6118 Butte Along the road gutter to the generator at Ponderosa Reservoir ca 1 mi E of the Ponderosa Dam 457 Comment
  CHSC65264  Nemophila heterophylla H. M. Hall 1908-4-5 8025 Butte Near Oroville, in the foothills of the Sierra Nevada. 150 Comment
  RSA75804  Nemophila heterophylla Lincoln Constance, J. L. Morrison 1938-4-30 2177 Butte Between Big and Little Chico creeks, 8 miles north of Chicho, Sierra Nevada foothills. 610 Comment
  UCD120060  Nemophila heterophylla M. Vincent 1964-4-8 504 Butte Hwy. 40. 1 mile northeast of new bridge. Comment
  CHSC45840  Nemophila maculata Lowell Ahart 1973-3-24 182 Butte Along a small wash, along Swedes Flat Road, about 1 mile east of Rocky Honcut Creek. 457 Comment
  SEINET10814721 Image available Nemophila menziesii var. menziesii H. E. Brown 1897-5-15 Brown 145 Butte Clear Creek. 213 Comment
  UC426938  Nemophila spatulata E. B. Copeland 1930-6-28 445 Butte Jonesville 1650 Comment
  POM183140  Nemophila spatulata H. F. Copeland 1930-7-28 1302 Butte Neighborhood of Jonesville. Near head of South Willow Creek. 1829 Comment
  UCD110175  Notholithocarpus densiflorus Leonard H. Day 1948-7-11 s.n. Butte About 5 miles above town of Feather Falls at top of Quartz Hill on road to Cascade. 1371 Comment
  CHSC95360  Nyssa sylvatica L. P. Janeway; Morgan LoRomer 2006-9-29 8889 Butte Rancho Arroyo Chico. Sacramento Valley. On the campus of California State University Chico; two trees at the southwestern corner of Shasta Hall, about 37 m southeast of Legion Ave. half way between Citrus Ave. and Warner St. 59 Comment
  UC672088  Odontostomum hartwegii Herbert L. Mason 1927-5-10 3710 Butte n.e. of Oroville (Table Mt., summit of plateau); Table Mt. Comment
  SEINET3992161  Odontostomum hartwegii A. A. Heller 1938-5-22 15108 a Butte Pac. R. R. Rep. 4: 150. 1857., Near the Chico airport in the elevated region above the alluvial valley proper; Hartweg got the type in this region in April, 1848; it always occurs in such situations, never in the alluvial valley floor Comment
  CHSC110411  Oenothera elata subsp. hirsutissima Lowell Ahart 2012-10-28 18537 Butte on the south side of the paved park road, southwest of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chioco. 76 Comment
  JEPS117516  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 0.5 miles east of Chico Canyon Road. 126 Comment
  UCD169924  Olea europaea Lowell Ahart 2010-6-1 16750 Butte On the northside of the Guardians Trail, about 100 yards east of the end of Centennial Avenue, Upper Bidwell Park, about 1/2 mile east of Chico Canyon Road. 125 Comment
  CAS-BOT-BC499774  Orobanche californica subsp. grayana H. F. Copeland 1930-7-30 1380 Butte Jonesville 1524 Comment
  CHSC40920  Orobanche fasciculata Lowell Ahart 1979-5-29 1908 Butte Along the edge of a dirt road about 1/2 mile east of Kunkle Creek, about 2 1/2 miles south-east of Paradise. 457 Comment
  CAS-BOT-BC499848  Orobanche fasciculata Roxana S. Ferris 1952-5-16 12483 Butte Flat above canyon of Butte Creek, about 2 mi W of Paradise on Chico Rd. 457 Comment
  SEINET10500392  Orobanche fasciculata var. franciscana Mary Susan Taylor 1980-4-19 Taylor 2539 Butte S side of Humbug, NE of Centerville. With J.D. Jokerst. 366 Comment
  RSA20876  Orthocarpus erianthus Carl B. Wolf 1937-3-29 8337 Butte Sierra Nevada foothills, 7.8 miles below Paradise on Chico Road. 152 Comment
  POM286324  Orthocarpus erianthus Lyman D. Benson 1935-3-27 6366 Butte 5 miles NW of Oroville, Sierra Nevada Mt Range, Sacramento river watershed. 152 Comment
  POM43592  Orthocarpus erianthus C. C. Bruce 1897-03 2089 Butte Chico. Comment
  CAS-BOT-BC254365  Oryza sativa G. P. Rixford 1914-9-4 s.n. Butte Biggs Comment
  UCD23268  Oryza sativa Albert Fischer 2003-9-17 s.n. Butte Biggs Experimental Station. Comment
  CHSC50311  Osmorhiza brachypoda Vernon Oswald 1990-5-28 4258 Butte Feather Falls Trail, ca. 0.4 mile north of the trailhead, ca. 2 miles north of the town of Feather Falls. 701 Comment
  UC1586596  Osmorhiza brachypoda Vernon H. Oswald and Lowell Ahart 1991-6-5 4651 Butte ca 1.5 air mi nw Platte Mtn. Lookout (dirt road to Minnie-Ha-Ha Mine located on Big Chico Creek, w side of Hwy 32, between Forest Ranch and Lomo) 762 Comment
  SEINET519222  Osmorhiza depauperata V. H. Oswald 1998-7-8 9248 Butte Colby Mt. Lookout Rd. (26N57) 0.9 mi N of Humboldt Rd. at Jonesville. 1561 Comment
  SEINET3840915  Ottelia alismoides G. Douglas Barbe, Thomas C. Fuller 1977-9-20 2334 Butte West of Biggs Rice Experiment Station, Submersed aquatic in drainage canal, east of Cherokee Canal, approximately 0.5 kilometers south of Highway 162 Comment
  CHSC99479  Oxalis corniculata Lowell Ahart 2008-6-13 14820 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 of Oroville. 311 Comment
  SEINET13711296  Oxalis laxa Lowell William Ahart, Lowell William Ahart 2003-1 10119 Butte 5.5 Mi. SW of Oroville, S of Feather River, Oroville Wildlife Area (39 Deg 27'17.8"N, 121 Deg 36'48"W) 131 Ft. 40 Comment
  UCD77993  Packera eurycephala Robert E. Preston 2001-7-9 1672 Butte Magalia, on serpentine outcrops along e side of The Skyway, between Coutelenc Rd and Magalia Dam, 682 Comment
  CAS-BOT-BC317158  Packera subnuda var. subnuda E. B. Copeland 1930-6-27 s.n. Butte Jonesville 1550 Comment
  UCD89512  Panicum capillare A. A. Heller 1916-9-30 12665 Butte 8 miles north of Oroville. Comment
  JEPS88223  Panicum dichotomiflorum Vernon H. Oswald and Lowell Ahart 1996-6-10 7755 Butte in US Fish & Wildlife parcel between 7 Mile Lane and Sacramento River, in NE corner of Tract 7.2, Sanctuary I Sacramento River National Wildlife Refuge, Llano Seco Unit 33 Comment
  CHSC94761  Panicum dichotomiflorum subsp. dichotomiflorum Lowell Ahart 2006-9-11 13308 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  UC1153811  Panicum dichotomiflorum subsp. dichotomiflorum Beecher Crampton 1957-9-17 4627 Butte 5 mi nw Biggs (Biggs Rice Experiment Station); Biggs Rice Experiment Station Comment
  UC420405  Parnassia californica unknown July 1896 Butte Colby Comment
  UC830989  Parvisedum pumilum A. A. Heller 1938-4-22 15042 Butte about 9 mi n of Chico (U.S. Highway #99E near the junction with the Cana Road); U.S. Highway #99E 60 Comment
  CHSC33892  Paxistima myrsinites M. S. Taylor; L. Hanson 1981-5-12 3689 Butte Jct of French Creek and 22N93, ca. 3.5 air mi s of Coyote Gap, ca. 17 air mi ne of Oroville. 853 Comment
  CHSC101138  Pectocarya pusilla Lowell Ahart 2009-5-15 15700 Butte About 60 yards northwest of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 2/3 mile (air) west of Highway 32, about 10 miles northeast of Chico. 267 Comment
  POM15713  Pedicularis aurantiaca Kate Conger 1907-1 s.n. Butte Brush Creek. Comment
  CHSC94911  Pedicularis densiflora L. P. Janeway 2006-5-28 8644 Butte Northern High Sierra Nevada. 0.6 km east of Concow Road, 1.1 km northeast of Rag Dump, 3.8 mi north of Flea Mountain. 1248 Comment
  UC725511  Pedicularis densiflora A. A. Heller 1939-3-23 15358 Butte Paradise Comment
  UC399518  Pellaea andromedifolia Mrs. R. M. Austin 1896-1 199 Butte Iron Canyon Comment
  SD135666  Pellaea brachyptera E. B. Copeland 1930-7-7 401 Butte Jonesville 1700 Comment
  CHSC40635  Pellaea mucronata Ahart; Jokerst 1985-3-24 4855 Butte Serpentine Point, west of Yankee Hill. 550 Comment
  CAS-BOT-BC67556  Pellaea mucronata Lowell Ahart 1966-2-25 s.n. Butte Honcut - Peter Ahart Ranch 45 Comment
  RSA769602  Pellaea mucronata var. mucronata L. Ahart 2009-4-22 15601 Butte W side of Guardians Trail, about 100 yards N of Pine Trail, Upper Bidwell Park, W of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 382 Comment
  JEPS50783  Penstemon azureus Rimo Bacigalupi with Paul Hutchison and L. R. Heckard 1967-6-16 9279 Butte along Feather River Highway (now Calif. 70) about 3 1/4 mi n Jarbo Gap; along Feather River Highway, n of Jarbo Gap 609 Comment
  RSA285683  Penstemon azureus subsp. angustissimus D. C. Michener 1980-8-4 3776 Butte Sierra Nevada. Talus slopes long CA 70 in open Pinus, chaparral transition ca 4 miles south of Pulga. Feather River Canyon Comment
  NY571121  Penstemon azureus var. angustissimus F. W. Pennell 1940-6-5 25678 Butte Route 24, along Feather River, 10-12 miles above Oroville 182.9 Comment
  SEINET10547978  Penstemon deustus Mary Susan Taylor 1978-7-18 Taylor 1710 Butte On E side of Humboldt Peak, at Humboldt Summit, on Butte-Tehama County line; Red Fir Forest. 2134 Comment
  NY591792  Penstemon deustus var. pedicellatus A. A. Heller 1915-6-16 12023 Butte Summit of the Sierra Nevada above Jonesville 2133.6 Comment
  NY600752  Penstemon gracilentus A. A. Heller 1914-8-7 11664 Butte Summit east of Jonesville 2133.6 Comment
  POM219260  Penstemon gracilentus H. F. Copeland 1930-7-26 1375 Butte Jonesville. Canyon of Butte Creek. 1524 Comment
  NY601766  Penstemon heterophyllus var. purdyi A. A. Heller 1926-4-21 13926 Butte Along Rock Creek, 7 miles north of Chico. Comment
  UC887074  Penstemon heterophyllus var. purdyi A. A. Heller 1915-4-20 11854 Butte Chico-Centerville road 3 mi from Chico; 3 mi from Chico Comment
  CHSC95213  Penstemon laetus var. leptosepalus R. D. Fischer 2004-6-20 818 Butte Chico Meadows. Norther Sierra Nevada, off Hwy 32, between Lomo and Butte Meadows along Humboldt Road. 1280 Comment
  CHSC1873  Penstemon neotericus R. M. Staley 1952-7-4 Butte Butte Creek. Comment
  UC426949  Penstemon neotericus E. B. Copeland 1929-7-13 456 Butte Jonesville 1650 Comment
  UC103098  Penstemon newberryi var. newberryi Mrs. R. M. Austin June 1899 175 Butte Bluffs Little Chico Creek Comment
  CHSC36300  Penstemon personatus M. S. Taylor 1982-8-16 4998 A Butte Along rd from Bald Mt to High Rock Ravine, ca. 4 air mi ne of Stirling City. 1706 Comment
  SD4595  Penstemon procerus E. B. Copeland 1931-6-20 689 Butte Jonesville, on gravel bars by Butte Creek 1500 Comment
  JEPS14291  Pentachaeta alsinoides Rimo Bacigalupi with G. T. Robbins and Fran Chisaki 1956-4-19 5608 Butte along Oroville-Concowroad 2.8 mi below (and s of) junction with Yankee Hill road 373 Comment
  CHSC32629  Pentagramma triangularis M. S. Taylor; L. Hanson 1981-4-2 3468 Butte Se side of Forbestown Reservoir, s side of rd 20N29, ca. 3 air mi n of Woodleaf. 548 Comment
  CHSC3295  Pentagramma triangularis M. L. Hillier 1966-3-7 Butte 100 to 300 yds s of covered bridge over Butte Creek. Comment
  CHSC3982  Pentagramma triangularis E. P. Parreno 1967-2-20 Butte Salmon Hole. Comment
  CHSC39842  Pentagramma triangularis Maxey-Jones 1928-2-27 Butte Iron Canyon. Comment
  RSA0094696  Pentagramma triangularis Lowell Ahart 2004-6-22 11119 Butte On the east side of Doe Mill Road, about 1/4 mile southeast of the bridge across Butte Creek, about 2 1/4 miles (air) southeast of Forest Ranch, about 5 miles (air) west of Stirling City. 628 Comment
  CHSC11325  Pentagramma triangularis subsp. semipallida Lowell Ahart 1967-4-12 Butte Bidwell Bar. 121 Comment
  CHSC33559  Pentagramma triangularis subsp. semipallida M. S. Taylor 1981-5-5 3603 Butte On e side of Lumpkin-Laporte Rd, 1 mi n of Enterprise bridge over south fork Feather River, ca. 10 mi e of Oroville. 457 Comment
  CHSC42504  Pentagramma triangularis subsp. semipallida Lowell Ahart 1987-5-12 5637 Butte South of Lumpkin Ridge Road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 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
  CHSC87885  Pentagramma triangularis subsp. triangularis Lowell Ahart 2004-6-22 11119 Butte On the east side of Doe Mill Road, about 1/4 mile southeast of the bridge across Butte Creek, about 2 1/4 miles (air) southeast of Forest Ranch, about 5 miles (air) west of Stirling City. 628 Comment
  CDA14080  Perideridia G. F. Hrusa, T. D. Wilfred 1997-7-3 13963 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Old growth Douglas-fir/mixed hardwoods. Few individuals along wet creek margin with base in water. Shaded, rocky creekbed. Plant just coming into bloom. Comment
  CHSC50789  Perideridia howellii Vernon Oswald; Lowell Ahart 1990-7-31 4420 Butte Meadow at the headwaters of Concow Creek, ca. 4 mi north of Concow. 1097 Comment
  UCD127897  Perideridia kelloggii W. S. Wilkinson 1921-7-16 s.n. Butte Chico. Comment
  CHSC31065  Perideridia parishii subsp. latifolia M. S. Taylor 1978-7-19 1788 Butte On n end of Snag Lake between creek and Humbug Rd, ca. 3 mi s of jct of Humbug Rd and Scotts John Rd. 1920 Comment
  CHSC33972  Perideridia parishii subsp. latifolia M. S. Taylor; L. Ahart 1981-8-15 4186 Butte N end of Snag Lake, e side of Humbug Rd, ca. 14 mi ne of Stirling City. 1737 Comment
  CHSC43246  Persicaria lapathifolia Lowell Ahart 1987-10-22 5922 Butte Along a drain ditch, along Oroville Chico Highway (149), 1/10 mile north-west of Highway 70. 76 Comment
  CAS-BOT-BC418947  Persicaria lapathifolia Herbert L. Mason; Verne Grant 1946-8-14 13028 Butte On Sacramento Outing Club, Butte Sink Comment
  CHSC21144  Persicaria maculosa M. S. Taylor 1975-10-3 924 Butte Abundant in mud on Big Chico Creek, under bridge over River Rd, ca. 10 mi w of Chico. 36 Comment
  CAS-BOT-BC419172  Persicaria maculosa Lowell Ahart 1982-10-15 3891 Butte On the bottom of North Honcut Creek, about 1 mile north and 2 and 3/4 miles east of Honcut 50 Comment
  CHSC37379  Persicaria punctata R. A. Schlising 1980-8-3 3965 Butte Richvale Vernal Pools, 1/4 mi s of jct Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  CHSC94595  Persicaria punctata Lowell Ahart 2006-9-11 13291 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  UC107479  Phacelia cicutaria Mrs. R. M. Austin May 1883 s.n. Butte Iron Canyon, above Chico Comment
  SEINET12328343  Phacelia cicutaria Unknown 1984-1 4541 Butte Peter Ahart Ranch, ca 2.5 N and 2.5 E of Honcut 50 Comment
  RSA325026  Phacelia cicutaria var. cicutaria L. Ahart 1984-4-4 4541 Butte Peter Ahart Ranch, ca. 2.5 N and 2.5 E of Honcut. 50 Comment
  RSA133567  Phacelia egena L. R. Heckard, J. R. Sweeney 1953-4-27 344 Butte Along Feather River highway about 16 miles northeast of Oroville. Comment
  CHSC45936  Phacelia heterophylla subsp. virgata Lowell Ahart 1984-7-19 4722 Butte Along a logging road near the dirt road, about 1 1/2 miles southeast of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City. 1371 Comment
  CHSC11968  Phacelia procera E. B. Copeland 1930-7-11 447 Butte Jonesville. Local on open ground, near Butte Creek. 1550 Comment
  POM73566  Phacelia purpusii C. C. Bruce 1898-05 2388 Butte Mountains. Comment
  UC1609253  Phalaris lemmonii Lowell Ahart 1993-5-15 6943 Butte e of the Cherokee Canal and n of the Biggs Princeton Road about 3 mi w Biggs; e of Cherokee Canal 30 Comment
  CAS-BOT-BC265953  Phalaris minor Lowell Ahart 1987-5-10 5609 Butte 1/8 mile south of Central House Road, east of the Western Pacific Railroad, about 1 1/2 miles north and 1 mile west of Honcut, about 12 miles south of Oroville 30 Comment
  CAS-BOT-BC250704  Phalaris paradoxa A. A. Heller 1914-5-13 11391 Butte Near Nelson Comment
  CHSC104839  Phalaris paradoxa Lowell Ahart 2010-6-9 16808 Butte At the old homestead, on the east side of Ten Mile House Road, about 5/8 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. 265 Comment
  CHSC56831  Phalaris paradoxa J. M. Lund 1980-3-3 Butte Chico Game Fish Farm, 0.2 mi west of Hwy 99, 1.0 mi north of Hwy 149. On a levee. 91 Comment
  CHSC27162  Philadelphus grandiflorus M. MacArthur 1968-6-17 306 Butte SE yard of Building U n Chico State College campus. 60 Comment
  SEINET12216556  Philadelphus lewisii subsp. californicus L. Ahart, Ahart, P. 1983-1 4080 Butte along Bloomer Hill Rd, ca 0.75 mi W of Oroville-Quincy Hwy, ca 15 mi NE of Oroville 425 Comment
  SEINET4176107 Image available Phleum pratense Lowell Ahart 1985-7-24 5156 Butte Below the high water line of the Forbestown Reservoir, about 50 yards South of the Generator, 4.5 Miles North-East of Forbestown. 351 Comment
  CAS-BOT-BC134920  Phoradendron bolleanum A. A. Heller 1918-5-5 13008 Butte Near Magalia Comment
  CAS-BOT-BC135099  Phoradendron juniperinum E. B. Copeland 1931-7-28 627 Butte Jonesville 1500 Comment
  CHSC33900  Phoradendron libocedri M. S. Taylor 1981-5-15 3739 Butte At loop in rd 23N00.1, serpentine barrens, ca. 0.5 mi s of Coyote Gap on Four Trees Rd, ca. 4 air mi e of Pulga on Feather River Hwy 70. 1219 Comment
  JEPS98508  Phoradendron libocedri Lowell Ahart 2000-9-27 8696 Butte About 1/4 mile southeast of Little Bald Rock, about 1 1/4 miles (air) northeast of Big Bald Rock, about 4 miles (air) northeast of Madrone Lake, about 13 miles (air) northeast of Oroville. 1066 Comment
  CHSC31220  Phoradendron villosum M. S. Taylor; J. D. Jokerst 1979-10-13 2256 Butte On Jordan Hill Rd, ca. 4.8 mi n of its jct with Concow Rd, ca. 2 mi e of Paradise. 609 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
  CHSC55062  Phyla nodiflora var. rosea Lowell Ahart 1991-9-14 6725 Butte On the south end of the dam at the large reservoir, Joie Osgood Ranch, about 2 miles east of Honcut. 45 Comment
  CHSC31212  Physalis acutifolia M. S. Taylor 1980-7-6 3060 Butte On w side of Hwy 32, ca. 0.1 mi s of Loma. 1127 Comment
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Aug 7 2007
  SD175856  Physalis acutifolia D. G. Kelch 2006-8-2 06 336 Butte Along Ord Ferry Road, east of old Sacramento River channel. 29 Comment
  CHSC87780  Physocarpus capitatus Paul Maslin 2004-5-6 32 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). On Big Chico Creek flood plain. UTM: 10609800E 4410330N. 243 Comment
  JEPS115126  Phytolacca americana Lowell Ahart, John Dittes, Josephine Guardino 2008-11-8 15435 Butte On the south side of the gravel road and Big Chico Creek, about 30 yards east of the end of Chico Canyon Road, Upper Bidwell Park, Chico 68 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
  RSA5147  Pinus contorta var. murrayana E. B. Copeland 1929-7-15 334 Butte Jonesville 1550 Comment
  CHSC2350  Piperia elongata 1954-5-30 Butte Nunnelly and Copeland roads, Paradise. 548 Comment
  CHSC81424  Piperia transversa L. P. Janeway 1996-5-27 4981 Butte Northern Sierra Nevada Foothills. Next to the road into Vinton Gulch; 100 ft east of Cherokee Road. 307 Comment
  CHSC110980  Pistacia atlantica Lowell Ahart; Susan Bazell, Josephine Guardino, Wes Dempsey 2012-6-21 18202 A Butte About 50 yards south of the dam at Sycamore Pool, Lower Bidwell Park, Chico. 62 Comment
  JEPS124178  Plagiobothrys Lowell Ahart 2015-3-10 19944 Butte North of Larkin Road, about 6 miles (air) southwest of Oroville. Comment
  CAS-BOT-BC169827  Plagiobothrys Ira L. Wiggins 1411 Butte 3 1/2 mi E of Durham on Slate Land Colony Highway Comment
  CHSC28142  Plagiobothrys austiniae Robert A. Schlising 1979-4-30 3383 Butte Ca 10 mi nw of Oroville, near jct Pentz and Clark roads. At roadside. 76 Comment
  SEINET7072731  Plagiobothrys fulvus A. G. Vestal 1963-5-9 s.n. Butte About 14.2 miles southeast of Chico on Route 140. UTM Zone 10, 616438mE, 4383522mN. Coordinate datum: NAD 27.) Comment
  UCD80159  Plagiobothrys fulvus var. campestris CNPS SN Foothill Team 2005-4-13 SNFN 0079 a Butte City of Chico, Doe Mill Meadowfoam Preserve, about 30 m from the western boundary and 60 m from the southern boundary. 85 Comment
  UC1442621  Plagiobothrys glyptocarpus Lowell Ahart 1979-4-6 Butte 3 mi nw Bangor 110 Comment
  UCD169853  Plagiobothrys glyptocarpus var. glyptocarpus Lowell Ahart 2010-6-9 16785 Butte About 1/2 mile south of the improved parking area and Cherokee Road, North Table Mountain, about 5 1/2 miles(air) northeast of Oroville. About 100 yards west of the fence. 398 Comment
  CHSC87225  Plagiobothrys greenei Lowell Ahart 2004-4-4 10713 Butte About 250 yards east of Wilber Road, northeast of the high hill crossed by Wilber Road, cattle pasture, about 3 miles (air) west of Thermalito. 48 Comment
  JEPS103587  Plagiobothrys greenei Lowell Ahart 2002-4-24 9526 Butte Vernal pools and swales, in a field, on the E side of Lone Tree Road, ca 1 1/8 miles N of Cox Lane, ca 3 miles (air) SW of Palermo, ca 7 miles (air) S of Oroville. 35 Comment
  UC987699  Plagiobothrys greenei Roxana S. Ferris 1952-5-16 12480 Butte about 3 mi s of Cherokee on road to Oroville 335 Comment
  CHSC46553  Plagiobothrys hispidulus V. Oswald; L. Ahart 1989-7-12 3852 Butte Meadow near the headwaters of Big Kimshew Creek, ca. 2 mi (air) sw of Lotts Lake, ca. 3 mi (air) se of Philbrook Reservoir. 1901 Comment
  CHSC58891  Plagiobothrys hispidulus Lowell Ahart 1992-7-21 6822 Butte On a gravel bar along Coon Hollow Creek, about 2 1/4 (air) miles north-east of Philbrook Reservoir. 1706 Comment
  CHSC94243  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
  UC196309  Plagiobothrys hispidulus A. A. Heller 1914-6-22 11496 Butte Chico Meadows w slope Sierra Nevada, Chico Meadows 1219 Comment
  CHSC116711  Plagiobothrys nothofulvus Lowell Ahart 2016-5-14 20829 Butte About 100 yards north of the waterhole, Peter Ahart Ranch, about1 3/4 miles northand 2 3/4 miles east of Honcut, about 11 miles (air) southeast of Oroville. 38 Comment
  CHSC29277  Plagiobothrys shastensis R. A. Schlising 1980-4-7 3554 Butte S of Oroville and Palermo, 1 mi e of Palermo--Honcut Highway. 48 Comment
  CHSC39507  Plagiobothrys stipitatus var. micranthus Lowell Ahart 1983-6-6 4034 a Butte On the bottom of a small vernal pool, Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut. 50 Comment
  HSC100812  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2010-5-14 16653 Butte Bottom and sides of drying pond, W side of the old Humboldt Rd., Disc Golf Area, ~150 yd. N of the entrance to the Disc Golf Area, ~40 yd. W of Hwy. 32, Upper Bidwell Park, 5 (air) mi. NE of Chico. 396 Comment
  RSA0035820  Plagiobothrys stipitatus var. micranthus Lowell A. Ahart 2008-6-13 14824 Butte About 350 yards southwest of the cemetery, about 50 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville. 305 Comment
  SEINET10870088  Plagiobothrys stipitatus var. micranthus Lowell Ahart 1983-6-6 Ahart 4034 Butte Peter Ahart Ranch, ca. 2.5 mi ne of Honcut. Valley Grassland; 50 m. 50 Comment
  SEINET516432  Plagiobothrys stipitatus var. micranthus Lowell Ahart 1980-1 2228 Butte Large size plant, growing on damp to dry gravelly red soil on the bottom of a small wash in a farmed field, Peter Ahart Ranch, about 2 1/2 mi N and 1/2 mi. E of Honcut, about 12 mi S of Oroville. 37 Comment
  CHSC103747  Plagiobothrys stipitatus var. stipitatus Lowell Ahart 2010-5-22 16709 Butte About 100 yards east of the fence, about 200 yards east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 385 Comment
  CHSC169  Plagiobothrys tenellus M. Roberson 1956-5-2 Butte S.W. of Paradise along Skyway. 426 Comment
  CHSC24901  Plantago bigelovii Kimberly J. Weir 1976-3-20 18 Butte Ca. 10.1 mi nw of Chico at junction of Highway 99 and Broyles Road. 60 Comment
  CHSC103945  Plantago coronopus Lowell Ahart 2010-5-22 16713 Butte About 140 yards east of the fence, about 240 yards east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 392 Comment
  CHSC113212  Plantago coronopus Lowell Ahart 2014-4-15 19357 Butte Below the high water line of Lake Oroville, about 20 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. 282 Comment
  CHSC108798  Plantago elongata Lowell Ahart 2012-4-9 17835 Butte Vernal pool, west of South Rim Trail, south part of Upper Bidwell Park, about 2 1/4 miles (air) northeast of Chico. 141 Comment
  CHSC109178  Plantago elongata Lowell Ahart 2012-5-4 17981 Butte On the bottom and sides of a small vernal pool, on the south rim of Beatson Hollow, 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. 351 Comment
  JEPS105905  Plantago elongata Lowell Ahart 2004-4-14 10741 Butte In the road gutter and on the lower edge of the south side of Lower Honcut Road, about 100 yards west of Wyandotte Creek, about 1/8 mile west of the Railroad, about 1 3/4 miles west of Honcut 27 Comment
  CHSC20045  Plantago erecta M. S. Taylor 1975-4-25 500 Butte Along dirt road, ca. 1/4 mi e of Cohasset Hwy, ca. 10 mi n of Chico. Comment
  CHSC24896  Plantago erecta G. K. Mead 1976-4-23 14 Butte Ca. 150 yds S of Butte Creek and 2.0 mi W of the Covered Bridge. 6.4 mi ESE of Chico. 121 Comment
  CHSC75389  Plantago erecta Jennifer Slater 1997-4-12 15 Butte Upland area at the Wurlitzer addition of the Vina Plains Preserve, approx. one mile west of Highway 99. 67 Comment
  JEPS119743  Plantago erecta Lowell Ahart 2012-3-23 17778 Butte About 100 yards south of the intersection of Guardian Trail and Ten Mile House Road, about 1/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  UC888367  Plantago erecta A. A. Heller 1917-3-18 12668 Butte Chico Creek, lower end of Iron canyon Iron Canyon Comment
  HSC43127  Plantago erecta Maralyn O'Meara 1974-4-20 280 Butte Along Pentz Rd. 300 yds. S of the intersection with Clark Rd. 76 Comment
  CHSC113388  Plantago major Lowell Ahart 2014-7-2 19548 Butte On the poor road, east of cow corral, about 200 yards north of the County Road, about one mile west of the intersection of County Road and Lumpkin Road, about 7 miles northeast of Feather Falls. 1281 Comment
  CHSC25444  Plantago major Hayes; Warner 1977-9-11 81 Butte Exactly 9.0 mi from the junction of the Butte Meadows Rd (Humboldt Rd) with Hwy 32. 1249 Comment
  SEINET12030014  Platanus racemosa Unknown 1984-1 4535 Butte along North Honcut Creek, ca 1 mi N & 2.7 mi E of Honcut, on Peter Ahart Ranch 50 Comment
  CHSC32588  Plectritis ciliosa subsp. insignis J. D. Jokerst; Jeri Donovan 1981-3-21 1260 Butte Ca. 0.5 mi N of Horseshoe Lake (ca 3 mi E of Chico in Bidwell Park). Comment
  CDA12066  Plectritis macrocera G. F. Hrusa, J. Hart 1989-4-15 5919 Butte Table Mountain; Coal Canyon, North Table Mountain. Comment
  CHSC73945  Pleuricospora fimbriolata B. Castro; L. Gehrung 1998-6-23 795 Butte Ca 4.5 air mi NNE of Brush Creek, ca 1 mi SE of Rogers Cow Camp, on W side of Oro-Quincy Hwy, on E side of SW-trending ridge overlooking Get-Up-and-Get Creek. 1191 Comment
  POM132103  Pleuricospora fimbriolata Kate Conger 1907-1 s.n. Butte Brush Creek. Comment
  POM193358  Pleuricospora fimbriolata E. B. Copeland 1929-7-13 436 Butte Jonesville. 1550 Comment
  HSC66331  Pleuricospora fimbriolata M. S. Taylor 1980-8-2 3210 Butte Humboldt Summit, 100ft. W of Old Humboldt Rd. 2012 Comment
  CAS-BOT-BC244401  Poa annua Lowell Ahart 1983-3-28 3908 Butte About 0.5 mile SW of Forbestown Res., along the road, about 4 miles NE of Forbestown 450 Comment
  CHSC2181  Poa annua M. Roberson 1956-4-9 Butte SW of Paradise, along Skyway. 426 Comment
  CHSC23132  Poa annua M. S. Taylor 1975-4-6 431 Butte In lawn, ne corner of Arcadian and W. 4th Ave, Chico. 30 Comment
  CHSC42454  Poa annua Lowell Ahart 1987-5-6 5559 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
  CHSC52154  Poa annua R. C. Kirkpatrick 1972-4-30 20 Butte Located at intersection of Vallombrosa Ave. and Vallombrosa Way, ca 5 yds s along the roadside. Chico. 39 Comment
  CHSC99319  Poa annua Lowell Ahart 2008-5-21 14775 Butte 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
  JEPS113239  Poa annua Lowell Ahart 2007-3-19 13594 Butte Peter Ahart Ranch, about 1 3/4 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville 35 Comment
  CHSC9281  Poa bulbosa D. C. Burns 1971-4-3 115 Butte On n side of Cohasset rd., ca. .5 mi e of the intersection of Cohasset rd. and Vilas rd. 365 Comment
  SEINET10657849  Poa bulbosa Lowell Ahart 1987-5-6 Ahart 5561 Butte On dry bare disturbed soil along the road, at the Poe Power House along the North Fork of the Feather River, about 2 miles south-east of Jarbo Gap. Comment
  SEINET10657852  Poa bulbosa BOS 1978-2-4 BOS 9 Butte Along Richardson Springs Rd, W of Maple Creek, 3 mi. ne of Cohasset Rd, 7 mi nne of Chico. Foothill Woodland. Comment
  CHSC61197  Poa howellii Vernon H. Oswald 1993-5-18 5401 Butte Middle Butte Creek Trail on the W side of the creek and on the upstream side of Ponderosa Way, between the footbridge over the creek and the side trail to 'Lil' Falls, ca. 2 mi (air) WNW of Magalia. Along the trail near the bottom of the canyon. 609 Comment
  JEPS121977  Poa palustris Lowell Ahart 2014-7-10 19609 Butte About 100 yards southwest of Memorial Spring and the Skyway, about a mile southwest of the intersection of Humbug Road and Philbrook Road, about 2 1/2 miles (air) northwest of Philbrook Reservoir. Comment
  CAS-BOT-BC255235  Poa pringlei E. B. Copeland 1931-6-22 606 Butte Jonesville 2000 Comment
  RSA4414  Poa pringlei E. B. Copeland 1931-6-22 s.n. Butte Jonesville 2000 Comment
  SEINET175716 Image available Poa pringlei Unknown 1931-6-22 606 Butte At 'The Summit 2000 Comment
  CHSC100913  Poa secunda subsp. secunda R. A. Schlising; R. Banchero 1981-5-19 4061 Butte Lumpkin Ridge, east of village of Feather Falls. 1280 Comment
  RSA0022166  Pogogyne zizyphoroides L. S. Rose 1963-6-5 6314 Butte 3 mi. w of Palmero 46 Comment
  RSA0022168  Pogogyne zizyphoroides A. A. Heller 1938-4-22 15043 Butte On U. S. Highway 99E, near the Cana road. Comment
  CHSC27706  Polemonium pulcherrimum Robert A. Schlising; Marc P. Hayes 1978-6-24 3290 Butte Probably just within Butte County line on summit of Humboldt Peak. 2133 Comment
  CHSC75266  Polycarpon tetraphyllum Lowell Ahart 1999-5-24 8080 Butte Sidewalks, Butte County Historical Society museum, 2335 Baldwin Avenue, Oroville. 60 Comment
  CHSC70809  Polygala cornuta var. cornuta B. Castro 1995-7-20 587 Butte Ca 2 air mi NW of Feather Falls, at western end of Watson Ridge, at W end of USFS Rd 21N25 along trail. 1005 Comment
  CHSC88089  Polygala cornuta var. cornuta R. D. Fischer 2004-4-17 174 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located in riparian zone of Big Chico Creek w. of 10 Mile House Road where rd. and creek are closest. 198 Comment
  UC455453  Polygala cornuta var. cornuta Miss Kate Conger 1907-1 Butte Brush Creek Comment
  JEPS104470  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
  CHSC92508  Polygonum aviculare Lowell Ahart 2005-12-11 12521 Butte On the sides of small ditches, on the Rice Experiment Station, between the Main Ditch and Stine Lateral, on the north side of Hamilton Road, about 1/4 mile east of Riceton Highway, about 2 1/4 miles (air) east of Biggs. 30 Comment
  CHSC103722  Polygonum bidwelliae Lowell Ahart 2010-5-14 16658 Butte In the tracks of an old Road, Disc Golf Area, about 100 yards west of the entrance to the Disc Golf Area, about 120 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 372 Comment
  JEPS117518  Polygonum bidwelliae Lowell Ahart 2010-5-23 16730 Butte On the west side of Guardians trail, north of the small drainage, about 50 yards north of Pine Trail, about 1/4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico 429 Comment
  POM220117  Polygonum bistortoides H. F. Copeland 1928-8-21 432 Butte Near head of Willow Creek, Neighborhood of Jonesville. 1524 Comment
  JEPS94929  Polygonum californicum Lowell Ahart 1996-11-2 7707 Butte about 12 mi s of Oroville (Peter Ahart Ranch, about 1 1/2 mi n and 1 mi e of Honcut); Peter Ahart Ranch 36 Comment
  CAS-BOT-BC414416  Polygonum douglasii H. F. Copeland 1920-7-24 18 Butte Meadow by Colby Creek 1828 Comment
  CHSC58945  Polygonum douglasii subsp. douglasii Lowell Ahart 1992-8-2 6908 Butte East of the intersection, about 1/2 mile north of Flea Valley, about 4 1/2 (air) miles north-east of Concow Reservoir. 1158 Comment
  UC1594717  Polygonum douglasii subsp. douglasii Lowell Ahart 1992-8-2 6908 Butte e intersection about 1/2 mile north of Flea Valley (about 4 1/2 air mi ne of Concow Reservoir) 1158 Comment
  UC1509659  Polygonum hydropiper L. Ahart 1982-10-11 3864 Butte large duckpond ca 1/10 mi w Graylodge Wildlife Refuge (ca 12 mi sw of Gridley) 35 Comment
  SEINET10937606  Polygonum hydropiperoides var. asperifolium Mary Susan Taylor 1978-9-8 Taylor 1883 Butte Along flood control slough, ca. 4 mi N of Chico, along Hwy 99. 61 Comment
  HSC100820  Polygonum lapathifolium Lowell Ahart 2011-8-17 17628 Butte ~10 yd. N of the trail, N of the crossing and on the E side of Big Chico Creek, ~50 yd. W of Ten Mile House Rd., Upper Bidwell Park, 3/4 (air) mi. W of Hwy. 32, 10 mi. NE of Chico. 204 Comment
  RSA724998  Polygonum lapathifolium L. Ahart 2006-9-11 13289 Butte South edge of the North Fork of the Feather River, north side of highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 air miles northeast of Oroville. 432 Comment
  CHSC29793  Polygonum parryi M. S. Taylor; J. D. Jokerst, R. Schlising 1980-6-14 2875 Butte Little Bald Rock, at base, ca. 4 mi e of Lake Madrone. 1016 Comment
  CHSC63717  Polygonum parryi Lowell Ahart 1994-10-9 7555 Butte In a small grassy opening, on the north side of Forbestown road, about 150 yards east of the intersection of Black Bart Road and Forbestown Road, about 3 (air) miles west of Forbestown. 609 Comment
  RSA724878  Polygonum persicaria L. Ahart 2006-9-11 13290 Butte South edge of the North Fork of the Feather River, north side of highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 air miles northeast of Oroville. 432 Comment
  CAS-BOT-BC420993  Polygonum spergulariiforme E. B. Copeland 1931-7-3 632 Butte Jonesville 1550 Comment
  CAS-BOT-BC71865  Polypodium californicum Lowell Ahart 1983-4-1 3917 Butte along old Highway 40, near the end of the road where it runs into Lake Oroville, about 4 miles south of Jarbo Gap 350 Comment
  CAS-BOT-BC71868  Polypodium californicum Lowell Ahart 1980-3-8 2034 Butte Peter Ahart Ranch, Honcut 50 Comment
  CAS-BOT-BC71875  Polypodium californicum E. B. Copeland 1902-12-1 s.n. Butte Chico Canyon Comment
  SEINET10530410  Polypodium californicum Mary Susan Taylor 1980-3-8 Taylor 2373 Butte Pulga community, ca. 1 mi NE of Hwy 70, ca. 28 mi NE of Oroville; serpentine soils. 488 Comment
  SEINET10966166  Polypodium californicum Mary Susan Taylor 1976-3-6 Taylor 1014 Butte Riparian Woodland along Macabe's Creek, ca. 50 ft E of Lumpkin Rd, ca. 1 mi NE of Forbestown Rd, ca. 12 mi E of Orovil le; shaded, wet, cool area. 244 Comment
  CHSC39233  Polypodium calirhiza M. S. Taylor; L. Ahart, J. Jokerst 1982-1-17 5215 Butte Vicinity of mouth of Flag Canyon. On top of North Table Mt., ca. 8 mi n of Oroville. 373 Comment
  CHSC94854  Polypodium calirhiza Lowell Ahart 2006-9-28 13360 Butte South of Bear Ranch Creek, about 15 feet above the west side of the entrance to the tunnel, about 1/8 mile east of Highway 70, about 1/4 mile southeast of the Shady Rest Area south of the Arch Rock Tunnel. 480 Comment
  JEPS107675 Image available Polypodium calirhiza Lowell Ahart, P. Maslin, S. Green, J. Guardino, J. Dittes 2005-2-6 11553 Butte Big Chico Creek Ecological Reserve. At the base of Lovejoy Basalt cliffs, about 300 yards west of Highway 32, about 8 miles northeast of Chico 406 Comment
  JEPS120176  Polypodium calirhiza Lowell Ahart 2012-7-5 18279 Butte On the south edge of Big Chico Creek, at Table 11, east of the Deer Pen, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC232966  Polypogon australis A. A. Heller 1914-5-19 11419 Butte Hills 8 miles N of Oroville Comment
  UCD80605  Polypogon australis CNPS SN Foothill Team 2005-5-25 SNNR 0266 b Butte 209 Comment
  CHSC102157  Polypogon interruptus Lowell Ahart 2009-5-30 15786 Butte On wet soil, along a small seep, at the base of a large rock, northwest of a broad open drainage in oak woodland, about 150 yards northwest of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northeast of Chico. 266 Comment
  CHSC116024  Polypogon interruptus Lowell Ahart 2015-10-16 20559 Butte On the west side of the Feather River, about half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. 26 Comment
  CHSC47630  Polypogon interruptus Lowell Ahart 1977-5-8 1364 Butte Wash, Peter Ahart Ranch, about 1 1/2 miles north and 2 miles east of Honcut, about 12 miles south of Oroville. 42 Comment
  SEINET10508324  Polypogon interruptus Lowell Ahart 1983-6-15 Ahart 4057 Butte Peter Ahart Ranch, ca. 2.5 mi ne of Honcut. Foothill Woodland; 50 m. Along the edges of North Honcut Creek. 50 Comment
  SEINET10602405  Polypogon interruptus Lowell Ahart 1990-5-25 Ahart 6489 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. T19N R6E nw/S6. Foothill Woodland (destroyed). 259 Comment
  CAS-BOT-BC233208  Polypogon maritimus Lowell Ahart 1983-6-12 4052 Butte 7 miles SW of Feather Falls. Ca. 1 mile S of Crystal Hill, near Oregon Gulch, near Lake Oroville 425 Comment
  CHSC90805  Polypogon maritimus Lowell Ahart 2005-5-2 11777 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
  SEINET10507585  Polypogon maritimus Lowell Ahart, Peter Ahart 1983-6-12 Ahart 4052 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
  CHSC38853  Polypogon monspeliensis Vernon Oswald 1983-6-20 722 Butte Upper Bidwell Park, Chico, 0.1 mi w of Parking Area N at Salmon Hole. In a roadside ditch. 152 Comment
  CHSC39348  Polypogon monspeliensis Lowell Ahart 1983-6-26 4150 Butte Along the edge of Ponderosa Way, about 1 1/2 miles south-east of the East Fork of Canyon Creek, about 14 1/2 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 575 Comment
  CHSC6126  Polypogon monspeliensis E. Parreno 1968-5-12 99 Butte Left side of Upper Bidwell Rd. before junction with Rd. to Diversion Dam. Chico. Comment
  SEINET10960583  Polypogon monspeliensis A. Arthur Heller 1902-5-15 Heller 556 Butte Near Biggs Comment
  CHSC113597  Polystichum imbricans subsp. curtum Lowell Ahart 2014-8-24 19723 Butte On the south side of the road, about 150 yards southwest of the Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. 577 Comment
  CHSC61291  Polystichum imbricans subsp. imbricans Lowell Ahart 1993-8-8 7151 Butte On the east side of Pinkard Creek, about 1 1/2 miles north-west of Lewis Flat, about 1 3/4 miles north-west of the Sly Creek Dam. 1097 Comment
  CHSC30085  Polystichum scopulinum M. S. Taylor; J. D. Jokerst, L. Ahart 1980-8-2 3214 Butte Humboldt Peak. 2154 Comment
  UC474222  Polystichum scopulinum H. F. Copeland 1920-8-24 423 Butte near the Summit Jonesville 2200 Comment
  CHSC37101  Populus alba L. Ahart 1982-9-13 3802 Butte A little n of the Lost Creek Reservoir Dam, ca. 2 mi nw of Strawberry Valley. 1100 Comment
  CHSC13515  Populus fremontii J. Lee 1974-4-4 4 Butte Found at 484 Panama Ave., Chico. 76 Comment
  CHSC20722  Populus trichocarpa M. S. Taylor 1975-8-31 896 Butte Ca. 50 ft s of Humboldt Rd, ca. 1/2 mi e of Butte Meadows. 1341 Comment
  CHSC35962  Potamogeton crispus M. S. Taylor 1982-5-22 4496 Butte Graylodge Waterfowl Refuge, in slough, at end of West Liberty Rd, ca. 112 mi sw of Gridley. 19 Comment
  JEPS106242  Potamogeton nodosus Lowell Ahart 2004-7-11 11227 Butte On the northeast shore of Paradise Lake, about 1/4 mile southeast of Mosquito Creek, about 4 miles (air) southwest of Stirling City 814 Comment
  CAS-BOT-BC454086  Potamogeton pusillus subsp. tenuissimus E. B. Copeland 1931-7-20 604 Butte Jonesville 1650 Comment
  CHSC48857  Potentilla anglica Vernon Oswald 1987-5-25 2922 Butte Butte Creek Reserve on the se side of Butte Creek ne of Hwy 99, downstream from the dam for the Durham Mutual Ditch. Along the edge of the stream. 68 Comment
  CHSC46237  Potentilla gracilis Pauleen Broyles 1987-7-5 1073 A Butte Ca 7 km n of Inskip on Bull Hill Road where it crosses Coon Creek. Roadside. 1500 Comment
  JEPS47186  Potentilla rivalis W. L. Jepson 1939-8-17 19455 Butte near Oroville; Feather River, near Oroville 45 Comment
  UCD113969  Poterium sanguisorba C. F. Bielar; Alva W. Mitchell 1968-6-10 s.n. Butte 5629 Sawmill Rd., Paradise. Comment
  CHSC31760  Proboscidea louisianica Lowell Ahart 1974-9-8 632 Butte Peter Ahart Ranch, Honcut, in barnyard. 45 Comment
  CHSC13708  Proboscidea lutea M. S. Taylor; K. Stern 1974-10-11 328 Butte Scarce in weed field ca. 50 yds e of River Rd, opposite washout on Sacramento River, ca. 10 mi w of Chico. Comment
  LA208651  Prunus virginiana var. demissa A. A. Heller; 1916-4-13 12320 Butte Stilson Canon E of Chico Comment
  CHSC58885  Pseudognaphalium californicum Lowell Ahart 1992-8-2 6910 Butte East of the intersection, about 1/2 mile north of Flea Valley, about 4 1/2 miles (air) north-east of Concow Reservoir. 1158 Comment
  JEPS120611  Pseudognaphalium luteoalbum Lowell Ahart 2013-11-13 19229 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. Comment
  CAS-BOT-BC357007  Pseudognaphalium luteoalbum John Thomas Howell 1959-9-20 34619 Butte Eastern outskirts of Oroville in lower foothills 60 Comment
  CAS-BOT-BC357588  Pseudognaphalium stramineum Lowell Ahart 1983-7-29 4226 Butte About 1/4 mile west of Milsap Bar, about 25 miles north-east of Oroville 500 Comment
  CHSC65419  Pseudognaphalium thermale Vernon H. Oswald 1982-11-13 14 Butte Upper Bidwell Park, Chico, ca. 500 ft. N of Upper Park Rd. 4.8 mi E of its junction with Wildwood Ave. (Browns Hole Area). Along the edge of a fire break. Comment
  CHSC24462  Pseudotsuga menziesii var. menziesii M. S. Taylor 1976-2-22 1000 Butte Ca. 2 mi n of Cohasset, ca. 10 ft e of Cohasset Hwy. Comment
  CHSC82223  Psilocarphus brevissimus var. brevissimus Lowell Ahart 2002-4-14 9487 Butte Area between the Railroad and the Midway Road, 50 yards north of Nelson Dlavo Road, in Nelson. 36 Comment
  CHSC48191  Psilocarphus oregonus Vernon Oswald 1987-4-15 2327 Butte Butte Creek Reserve on the s side of Butte Creek e of Hwy 99 near the valve which regulates Durham Mutual Ditch. 68 Comment
  JEPS119988  Psilocarphus tenellus Lowell Ahart 2012-4-30 17939 Butte On both sides of Guardian Trail, south of Ten Mile House Road, about 1/8 mile west of Highway 32, about 8 1/2 miles northeast of Chico, south part of Upper Bidwell Park. Comment
  RSA4451  Psilocarphus tenellus var. tenellus E. B. Copeland 1931-7-20 698 Butte Jonesville, near Butte Creek House. 1700 Comment
  UC109312  Ptelea crenulata Mrs. R. M. Austin jun 1879 263 Butte Comment
  UCR190820  Ptelea crenulata 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
  CHSC57334  Pteridium aquilinum var. pubescens Robert C. Hill 1990-4-10 7 Butte Large population at junction of Enterprise Bridge and south Fork Feather River, 13 mi e of Oroville. 426 Comment
  RSA712989  Pteridium aquilinum var. pubescens L. Ahart 2006-4-28 12545 Butte A part of the drainage of Beatson Hollow, about 3/4 mile northwest of the Iron Gate along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 318 Comment
  CHSC48672  Pterospora andromedea Vernon Oswald 1983-7-6 811 Butte Near Calif. Hwy. 32, 11.7 mi n-e of Forest Ranch. 1158 Comment
  CHSC61646  Pterospora andromedea Lowell Ahart 1993-9-8 7162 Butte On the north side of the ridge, about 1 mile east of Snow Mountain. 2072 Comment
  SEINET924201  Pterospora andromedea E. B. Copeland 1931-1 668 Butte Jonesville 1550 Comment
  CHSC96227  Pterostegia drymarioides R. Fischer 2006-4-25 972 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east -side addition along Hwy. 32. Located at bottom of 10-Mile House Road ca. 0.5 miles s of end of upper park property. Plants growing on 7 ft. boulder on a n facing hillside above Big Chico Creek. 259 Comment
  CHSC106307  Pyracantha koidzumii L. P. Janeway 2010-10-25 10216 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; southwest-facing slope below Monkey Face. 119 Comment
  UC1586496  Pyrola asarifolia Vernon H. Oswald and Lowell Ahart 1991-8-19 4835 Butte North side of Forest RD 25N15, between Philbrook Reservoir and Coon Hollow 1767 Comment
  POM219525  Pyrola californica E. B. Copeland 1931-7-1 670 Butte Jonesville. 1500 Comment
  CAS-BOT-BC462605  Pyrola dentata Vernon Oswald; Lowell Ahart 1987-7-1 3063 Butte Lily Pond located ca. 0.6 mi (air) W of Butter Creek House and 0.25 mi S of Humbug Rd., ca 2.75 mi (air) SE of Jonesville 1813 Comment
  CDA13242  Pyrola picta G. F. Hrusa, T. D. Wilfred 1996-7-8 13089 Butte Plumas National Forest; Near Old Railroad Grade Rd., Paradise Lake Dam, approx. 3 m. N of Magalia. Comment
  POM183269  Pyrola picta H. F. Copeland 1930-7-21 s.n. Butte Jonesville 1677 Comment
  UC876268  Pyrola picta A. A. Heller 1914-7-23 11597 Butte in (burnt over) tracts about Chico meadows Chico; Chico meadows 1219 Comment
  SD3510  Pyrola secunda E. B. Copeland 1930-8-7 434 Butte Jonesville 1500 Comment
  CHSC110099  Pyrus calleryana L. P. Janeway 2012-2-28 10787 Butte Sacramento Valley. City of Chico; semi-natural riparian strip be-tween Big Chico Creek and Vallombrosa Way just southwest of One Mile Recreation Area; northwest side of the creek. 62 Comment
  CAS-BOT-BC105030  Quercus X morehus Lowell Ahart 1976-7-15 s.n. Butte Near edge of North Honcut Creek, 2 miles N and 3 miles E of Honcut 200 Comment
  UC762329  Quercus berberidifolia R. F. Hoover 1938-8-2 4719 Butte Chico to Paradise road Comment
  UCD111117  Quercus berberidifolia Christopher Mallek 2008-1 HW3- 24 Butte Magalia. 756 Comment
  UCD169445  Quercus berberidifolia L. P. Janeway; Matt Brown, Jamie Tuitele-Lewis 2005-4-12 8361 Butte 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
  CHSC31379  Quercus douglasii J. D. Jokerst 1979-4-6 1188 Butte S edge of the S branch of Coal Cr. Canyon. On top of North Table Mountain. 365 Comment
  JEPS38009  Quercus dumosa A. E. Wieslander 1927-6-29 Butte near Fourteen-mile House (Humboldt road from Chico) Comment
  SEINET10477880  Quercus durata Mary Susan Taylor, L. Hanson 1981-4-2 Taylor 3476 Butte T23N R4E northcentral sec 30; Paradise quad. Ca. 1/5 mi se of Ponderosa Way Bridge over West Branch Feather River, in Genii Mine area, ca. 3/4 mi ne (and downhill) of Magalia. Steep serpentine slope; 1800 ft. 549 Comment
  CHSC96619  Quercus garryana var. breweri L. P. Janeway; B. Castro 2006-5-7 8680 Butte Northern High Sierra Nevada. Top of west-facing serpentine outcropping above Little Butte Creek 0.4 km south of Paradise Lake dam. 762 Comment
  UC1135617  Quercus garryana var. breweri J. E. Sowder, C. G. Albertus 1933-6-28 98 Butte 2 mi e Keefer's Old Mill; Chico Quad. 365 Comment
  CDA13879  Quercus garryana var. semota G. F. Hrusa, T. D. Wilfred 1997-5-7 13738 Butte Sierra Nevada; Slopes facing Little Butte Creek above Magalia Reservioir, N of Magalia. Comment
  CHSC38445  Quercus kelloggii Vernon Oswald 1983-5-23 547 Butte Upper Bidwell Park, Chico, near Yahi Trail e of Brown's Hole. 207 Comment
  CHSC624  Quercus kelloggii M. Roberson 1956-5-28 Butte Near Paradise along Skyway. 548 Comment
  CHSC100471  Quercus robur Lowell Ahart; John Dittes 2008-11-14 15452 Butte In the south part of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  LA205377  Quercus vacciniifolia A. A. Heller; 1915-6-10 11957 Butte Little Summit 1371 Comment
  POM219180  Quercus vacciniifolia H. F. Copeland 1928-8-14 335 Butte Neighborhood of Jonesville, above Scotch-John Creek. 1829 Comment
  SEINET13954004 Image available Quercus vacciniifolia A. A. Heller 1915-1 11957 Butte Little Summit in the Sierra Nevada, in the yellow pine belt, elevation about 4500 feet, on open gravelly slopes about rocks in granite. 1372 Comment
  CHSC52818  Ranunculus alismifolius var. hartwegii Kirsten Tarp 1983-7-31 317 Butte S of Butte Creek House ca. 32 air miles ne of Chico. In meadow. 1828 Comment
  SEINET10536065  Ranunculus aquatilis var. capillaceus Mary Susan Taylor, Lowell Ahart 1981-8-15 Taylor 4183 Butte T26N R4E se 1/4 se 1/4 sec. 35. Jonesville SW quad. In and along West Branch Feather River, 3.4 mi SW of Snag Lake, ca. 11 mi NE of Stirling City. 5300 ft. 1615 Comment
  CHSC2385  Ranunculus arvensis R. Carter 1965-3-23 171 Butte Found 10 yds. N of Richardson Springs turnoff along E side of Cohasset Rd. along W side of rock fence. 167 Comment
  CHSC37497  Ranunculus bonariensis var. trisepalus J. D. Jokerst; R. A. Schlising 1983-4-9 1711 Butte In the large vernal pool that is ca. 1/4 mile east of the south fork of Coal Cr. Canyon. Top of Table Mountain. 396 Comment
  JEPS127009  Ranunculus bonariensis var. trisepalus Lowell Ahart 2016-5-24 20866 Butte About 100 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. Comment
  RSA516356  Ranunculus bonariensis var. trisepalus Barbara J. Ertter 1986-4-13 5901 Butte 2 air miles NNE of Honcut between Oroville and Marysville, Peter Ahart Ranch (mostly used as sheep pasture). 30 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
  CHSC45753  Ranunculus flammula var. ovalis Kirsten Tarp 1981-7-19 36 Butte N part of county at Crane Valley; in meadow. 1584 Comment
  CHSC46845  Ranunculus hebecarpus Kirsten Tarp 1982-4-3 100 Butte Near Chico in Upper Bidwell Park. 152 Comment
  CHSC87438  Ranunculus hebecarpus R. D. Fischer 2004-3-31 102 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Collected at junction of Guardian Trail and Pine Trail near seasonal drainage. 396 Comment
  POM99158  Ranunculus hystriculus R. M. Austin 1888-03 33 Butte Bluffs, Little Chico Creek Comment
  CHSC111374  Ranunculus muricatus Lowell Ahart 2012-5-2 17967 Butte On dark clay soil, on the bottom of a depression, under the Government Pole Line, about 100 yards west of the Easter Cross Parking Lot, Upper Bidwell Park, about 1 mile east of Chico. 90 Comment
  CHSC115493  Ranunculus occidentalis L. P. Janeway 2015-3-18 11642 Butte Northern High Sieerra Nevada. Plumas National Forest; along Ponderosa Way at Road 19N19, 1.0 road-km northwest of Lower Forbestown Road, just before the canyon becomes steep into South Fork Feather River arm of Lake Oroville. 747 Comment
  CHSC1489  Ranunculus occidentalis R. Carter 1964-3-15 45 Butte 8 mi. E of Oroville, 250 yds. up Wakefield Dr. off Feathervale. 121 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
  CHSC31207  Ranunculus occidentalis var. ultramontanus M. S. Taylor 1978-7-18 1723 Butte On n side of Butte Creek, ca. 1/8 mi w of Road Island Junction, at jct of Butte Creek and Old Humboldt Rd, ca. 1 mi w of Cherry Hill Campground. 1524 Comment
  CHSC65207  Ranunculus pusillus Lowell Ahart 1995-5-26 7573 Butte In a rice field, Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC77994  Ranunculus pusillus Lowell Ahart 2000-5-13 8356 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
  CHSC42404  Ranunculus sardous Lowell Ahart 1987-6-9 5739 Butte On the west side of the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  UCD97314  Ranunculus uncinatus E. B. Copeland 1930-6-29 641 Butte Jonesville. 1500 Comment
  CHSC10657  Raphanus raphanistrum Lowell Ahart 1966-3-15 Butte Peter Ahart Ranch, Honcut. 42 Comment
  SEINET10493567  Rhamnus Mary Susan Taylor, Vernon H. Oswald 1985-5-30 Taylor 5513 Butte Trees Road between Hwy 70 and Coyote Gap, ca. 25 air mi NE of Oroville. Yellow Pine Forest. Comment
  UC600524  Rhamnus rubra H. F. Copeland 1931-6-10 Butte crest between Willow Creek and Colby Creek Comment
  CHSC101123  Rhamnus tomentella subsp. tomentella Lowell Ahart 2009-5-23 15724 Butte On the south 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
  CHSC1525  Rhamnus tomentella subsp. tomentella A. Goekler 1928-5-25 Butte Bidwell Park. 60 Comment
  HSC100784  Rhamnus tomentella subsp. tomentella Lowell Ahart 2009-5-23 15724 Butte S side of Ten Mile House Rd., Upper Bidwell Park, 1/2 (air) mi. SW of the intersection of Hwy. 32 and Ten Mile House Rd., 10 (air) mi. NE of Chico. 311 Comment
  CAS-BOT-BC199713  Rhododendron occidentale Lowell Ahart s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC31679  Rhododendron occidentale L. Ahart 1977-4-16 1304 Butte Peter Ahart Ranch, Honcut. Along the edge of North Honcut Creek. 50 Comment
  CHSC43881  Rhododendron occidentale L. P. Janeway 1987-6-8 2169 Butte Along French Cr 0.5 mi W of the mouth of Ram Cr and the bridge. 609 Comment
  CHSC46015  Rhododendron occidentale Lowell Ahart 1979-4-28 1849 Butte North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  SEINET10449291  Rhododendron occidentale Mary Susan Taylor 1980-5-27 Taylor 2735 Butte T21N R6E wc border sec 30/29. Big Bend quad. On N side of Bald Rock Rd, ca. 0.5 mi E of Big Bald Rock, ca. 4 mi E of Lake Madrone; granitic soils. 975 Comment
  CHSC78320  Rhynchospora capitellata Lowell Ahart 2000-7-11 8572 Butte Seeps, on the north side of Lumpkin Ridge Road, upper west branch of Know-nothing Creek, about 1 mile southwest of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, about 4 miles (air) northeast of Feather Falls. 1219 Comment
  SEINET4178997 Image available Rhynchospora glomerata var. minor Unknown 1980-9-10 Butte Little Bald Rock 1100 Comment
  CHSC40098  Ribes amarum A. A. Heller 1938-5-1 15057 Butte Forest near DeSabla. 853 Comment
  CAS-BOT-BC212673  Ribes nevadense Lowell Ahart 1982-5-8 3420 Butte Forbestown Resevoir 700 Comment
  JEPS94297  Ribes nevadense Lowell Ahart 1997-8-1 7760 Butte about 8 air mi ne of Stirling City (on the w side of Little Kimshew Creek, about 1/4 mi e of Table Mountain); Little Kimshew Creek 1432 Comment
  UC436293  Ribes nevadense E. B. Copeland July, 1930 Butte Jonesville 1600 Comment
  CAS-BOT-BC198952  Ribes roezlii var. roezlii E. B. Copeland 1931-5-9 648 Butte Jonesville 1500 Comment
  CAS-BOT-BC198966  Ribes roezlii var. roezlii A. A. Heller 1915-6-26 12031 Butte Summit of the Sierra Nevada above Jonesville 2133 Comment
  CHSC113299  Rorippa curvisiliqua var. orientalis Lowell Ahart 2014-4-9 19345 Butte Bottom of a drying pond, about 100 yards west of the parking area, west end of West Liberty Road, about one mile (air) south of Colusa Highway, about 7 miles (air) southwest of Gridley. 19 Comment
  CHSC75990  Rorippa palustris var. hispida Lowell Ahart; Vernon H. Oswald 1999-8-13 8182 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
  CHSC35646  Rorippa palustris var. occidentalis R. E. Preston 1982-4-7 230 Butte On bank of irrigation ditch; along Main Ditch B, ca. 1 1/4 mi e of Richvale. 32 Comment
  JEPS108924  Rorippa palustris var. occidentalis Lowell Ahart 2005-12-11 12509 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
  JEPS120059  Rosa Lowell Ahart 2012-6-9 18181 Butte East of the South Rim Trail, at the old homestead, about 100 yards south of 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. Comment
  CHSC1597  Rosa bridgesii G. Herrington 1930-5-1 Butte Paradise. 609 Comment
  CHSC27328  Rosa californica T. B. Devine 1977-11-6 463 Butte On River Road 1/4 mi se of jct with Big Chico Creek, on fenceline beside field. 3/4 mi w of Mt. Diablo meridian. 38 Comment
  CHSC82396  Rosa californica Lowell Ahart 2002-5-15 9661 Butte On the south side of Central House Road, about 80 yards east of the bridge across Whyman Ravine, about 1/4 mile east of Highway 70, about 12 miles southwest of Oroville. 27 Comment
  CHSC96887  Rosa gymnocarpa Lowell Ahart 2007-6-12 14067 Butte North of the parking area at Big Bald Rock, about 14 miles (air) northeast of Oroville. 893 Comment
  JEPS115699  Rosa pisocarpa Lowell Ahart 2009-11-19 16542 Butte About 30 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 209 Comment
  UC1926778 Image available Rosa pisocarpa subsp. ahartii Barbara Ertter, Lowell Ahart 2007-6-23 19074 Butte Butte County: Black Bart Road 1.3 miles from lower junction with Forbestown Road, ca 10 airmiles ESE of Oroville. 655 Comment
  UC392208  Rosa pisocarpa subsp. ahartii E. B. Copeland 1929-7-19 Butte Jonesville 1550 Comment
  CHSC43127  Rosa pisocarpa subsp. pisocarpa L. P. Janeway 1987-6-13 2212 Butte Edge of mdw just NE of jct of Concow Rd and the road to Flea Mtn. 1188 Comment
  CAS-BOT-BC274231  Rostraria cristata A. A. Heller 1902-5-13 5534 Butte Grade between Clear Creek and Paradise Comment
  CHSC89501  Rotala indica G. Douglas Barbe 1978-8-14 2437 Butte Check-levees, Biggs Rice Experiment Station. [Lat./Long. on label is '39 degrees 44' N; 121 degrees 40' W']. Comment
  CHSC38545  Rotala ramosior Vernon Oswald 1983-7-8 836 Butte Upper Bidwell Park, Chico, on the n side of Horseshoe Lake. 100 Comment
  UC1191575  Rotala ramosior Herbert L. Mason, Verne Grant 1946-8-15 13048 Butte Butte Sink, Greylodge Game Refuge, #833 Irrigation Ditch, near caretakers house Butte Sink; , Greylodge Game Refuge, #833 Irrigation Ditch Comment
  CDA31997  Rubus armeniacus L. Ahart 2008-5-23 15771 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. Comment
  CDA42869  Rubus armeniacus L. Ahart 2012-5-14 18055 Butte Just west of Table 12, south of Big Chico Creek, north of the paved road, Lower Bidwell Park, Chico. Comment
  CHSC45810  Rubus armeniacus L. P. Janeway 1987-5-7 2019 Butte Along Little Chico Cr at the powerlines; near Stilson Cyn Rd 0.8 mi east of Bruce Rd. 88 Comment
  CHSC45822  Rubus armeniacus L. P. Janeway 1987-6-5 2150 Butte Along Peavine Cr near mouth of Coon Cr and where the Peavine Cr rd crosses. 746 Comment
  CHSC52472  Rubus armeniacus L. P. Janeway 1987-5-20 2061 Butte Near Gold Flat, Hodap Cr, jct of Lunt Rd and Nelson Bar Rd. Creek bottom. 457 Comment
  CHSC6656  Rubus armeniacus M. MacArthur 1968-6-17 167 Butte SW side of Big Chico Creek near Life Science bld., Chico State College campus. 60 Comment
  CAS-BOT-BC156614  Rubus bifrons John Thomas Howell 1962-6-15 37453 Butte Magalia 731 Comment
  JEPS98589  Rubus discolor Lowell Ahart 2000-6-29 8546 Butte In the north part of Flea Meadow, about 1/2 mile west of Flea Mountain, about 3 1/2 miles (air) north of Concow Reservoir, about 5 miles (air) east of Magalia. 1036 Comment
  POM366458  Rubus discolor L. Ahart, P. Ahart 1984-6-10 4716 Butte About 2 miles SW of Forbestown Diversion Dam. NE of Forbestown. 700 Comment
  CHSC95081  Rubus glaucifolius L. P. Janeway 2006-6-25 8705 Butte High Cascade Range. Along Cohasset Ridge and Cohasset Road about 0.5 km southwest of Anderson Mill site and about 5.9 air km north-northeast of Cohasset. 1128 Comment
  POM91428  Rubus macropetalus C. C. Bruce 1897-05 1793 Butte Big Chico. Comment
  CHSC50341  Rubus pensilvanicus Vernon Oswald 1990-5-14 4212 Butte Small lake located ca. 1 mile south of Brush Creek. 996 Comment
  CHSC51370  Rubus pensilvanicus Vernon Oswald 1990-8-28 4444 Butte Chico Meadows, ca. 1 mile north of Butte Meadows. Northeast of the 'swimming hole' at the Boy Scout Camp. 1292 Comment
  UCD89072  Rubus ursinus Lindsay Clark 2008-6-3 BWP 26 Butte Bidwell Park in Chico, along Yahi trail between parking lots G and H (Alligator Hole and Day Camp). 92 Comment
  SEINET10937266  Rubus vitifolius Mary Susan Taylor 1976-4-4 Taylor 1061 Butte Yellow Pine Forest, ca. 2-5 mi W of junction of Ponderosa Way and Hwy 32, ca. 2-10 ft N and S of Ponderosa Way, ca. 23 mi NE of Chico; with Sanicula bipinnata, Calochortus monophyllus. 488 Comment
  CHSC20503  Rumex acetosella M. S. Taylor 1975-4-24 526 Butte Abundant on n and w side of Kunkle Reservoir, ca. 1 mi s of Paradise. 609 Comment
  CHSC28560  Rumex acetosella M. S. Taylor; J. T. Howell 1978-7-21 1806 Butte On s side of Oroville-Quincy Hwy, ca. 9 mi n of Lake Madrone. 914 Comment
  CHSC64049  Rumex acetosella S. C. Morey 1983-8-4 711 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC64207  Rumex crispus S. C. Morey 1983-7-23 587 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC90930  Rumex crispus Lowell Ahart 2005-4-14 11717 Butte Bottom of a deep drain ditch, about 200 feet east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  CAS-BOT-BC433476  Rumex dentatus Lowell Ahart 1981-5-16 2804 Butte Gray Lodge, 11 miles southwest of Gridley. Gray Lodge Waterfowl Management Area. 35 Comment
  CHSC38623  Rumex salicifolius var. denticulatus Vernon Oswald 1982-8-9 Butte Upper Bidwell Park, Chico, in Lindo Channel near Five Mile Recreation Area. 85 Comment
  CAS-BOT-BC434167  Rumex triangulivalvis A. A. Heller 1928-7-25 14702 Butte Butte Creek House Comment
  JEPS122065  Sagina decumbens subsp. occidentalis Lowell Ahart 2014-5-21 19530 Butte South bank of river, where Sucker Creek flows into the South Fork of the Feather River, below the high water line of Lake Oroville, about 1/4 mile west of the Ponderosa Dam. Comment
  UC1602295  Sagina saginoides unknown 1892-6-29 Butte Jonesville Comment
  CAS-BOT-BC129946  Salix bonplandiana A. A. Heller 1913-4-5 10703 Butte Hills, north side of the Feather River above Oroville Comment
  LA208601  Salix eastwoodiae E. B. Copeland; 1931-6-11 617 Butte Jonesville, Kirby's Meadow 1750.0 Comment
  UC1506098  Salix exigua var. hindsiana Robert T. Clausen 1963-3-21 63013 Butte w of sewage disposal ponds Chico; Sacramento Valley, Sacramento R. drainage 110 Comment
  CHSC65690  Salix gooddingii Vernon H. Oswald 1996-3-22 7249 Butte Sanctuary 1, S edge of Tract 2. 33 Comment
  CHSC65019  Salix jepsonii Vernon Oswald 1988-6-20 3410 Butte Jones Meadow Rd. e of Inskip at Last Chance Creek. 1560 Comment
  CHSC99649  Salix jepsonii H. Koeth 2007-5-1 Butte Moist seep in Butte Meadows along creek. UTM 10 628108E 4440095N. 1326 Comment
  CHSC108845  Salix lasiolepis Lowell Ahart 2012-3-9 17773 -A Butte On a gravel bar, middle of North Honcut Creek, 30 yards east of the floodgate, Peter Ahart Ranch, about 1 mile north and 2 1/2 miles east of Honcut, about 12 miles southeast of Oroville. 39 Comment
  CHSC57510  Salix lasiolepis Rebecca L. Hill 1990-4-7 8 Butte E side of the East Branch of Clear Creek, ca. 0.3 mi ne of Clear Creek Cemetary rd., ca. 6 mi s of Paradise off of Clark Rd. 121 Comment
  SBBG126081  Salix lasiolepis L. Ahart 2012-3-9 17773 -A Butte middle of N Honcut Crk, 30 yards E of floodgate, Peter Ahart Ranch, ca 1 mi N and 2.5 mi E of Honcut 39 Comment
  UC474239  Salix lasiolepis H. F. Copeland 1923-3-16 Butte Butte Creek Canyon; near mouth Comment
  UCR237325  Salix lasiolepis George K. Helmkamp, E. A. Helmkamp 2012-4-14 18746 Butte Northern Sacramento Valley, Robinsons Corner, Simpson Rd, just east of junction of East Gridley Road and CA-70 23 Comment
  SEINET10538856  Salix lasiolepis Mary Susan Taylor 1979-3-19 Taylor 1934 Butte T23N R5E Pulga quad. In the vicinity of Pulga bridge over Feather River on Hwy 70, ca. 25 mi NE of Oroville. 488 Comment
  CAS-BOT-BC129580  Salix lasiolepis var. lasiolepis A. A. Heller 1914-4-27 11324 Butte Hills 8 miles north of Oroville, on the stony banks of a winter stream 8 miles north of Oroville Comment
  SD130407  Salix lemmonii John Thomas Howell 1967-5-9 42240 Butte Canyonside on northwest side of Feather River near Pulga Bridge Comment
  SEINET177031  Salix lemmonii E. B. Copeland 1931-8-1 620 Butte Jonesville. 1700 Comment
  POM219073  Salix melanopsis E. B. Copeland 1931-6-10 622 Butte Jonesville, Butte Creek. 1500 Comment
  CHSC55798  Salsola australis Vernon H. Oswald; Lowell Ahart 1991-11-2 4882 Butte East side of Thermalito Diversion Pool ca. 0.3 mile north of Thermalito Diversion Dam, near Oroville. 73 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
  SEINET12319553  Salvia sonomensis S. R. Johnson 1978-1 18 Butte Ca 22km N of Chico, ca 5km S of Cohasset 590 Comment
  CHSC48020  Sambucus mexicana Vernon Oswald 1987-7-13 3113 Butte Forest Service road ca. 0.75 mi (air) E of Summit Lake, ca. 1.5 mi (air) NE of Snow Mt, ca. 4.5 mi (air) SE of Jonesville. 1828 Comment
  UC392190  Sambucus mexicana E. B. Copeland July, 1929 Butte Butte Creek Jonesville 1550 Comment
  JEPS103400  Sanicula Lowell Ahart 2002-6-21 9733 Butte On the sides of a poor dirt road, Watson Ridge, ca 2 miles (air) NE of Bald Rock Dome, ca 5 miles (air) N of Feather Falls (the town). 1086 Comment
  CHSC42660  Sanicula bipinnata Vernon Oswald 1985-4-16 1721 Butte Upper Bidwell Park, Chico, on the slope bordering the s side of the Golf Course. 121 Comment
  CAS-BOT-BC223244  Sanicula bipinnatifida Mrs. C. C. Bruce 1898-5-1 2051 Butte Big Chico Comment
  HSC23502  Sanicula bipinnatifida Judy Potter 1966-3-21 Butte Pentz Road 1 mi. E Hwy. 99E Comment
  UC195452  Sanicula bipinnatifida A. A. Heller 1914-3-18 11206 Butte 8 mi n of Oroville (near w base of Table Mountain); Table Mountain Comment
  CHSC93458  Sanicula bipinnatifida var. flava Lowell Ahart 2006-5-8 12601 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
  CHSC63954  Sanicula tuberosa B. Castro; L. Janeway 1994-4-21 510 Butte On Watson Ridge, on S-trending ridge S of USFS Rd 21N25A. 1054 Comment
  UC1605153  Sanicula tuberosa Vernon H. Oswald 1993-4-12 5256 Butte N of Oroville (S wall of Flag Canyon near top of an old track from bottom of canyon onto NW edge of North Table Mountain) 341 Comment
  CAS-BOT-BC328133  Santolina chamaecyparissus T. C. Fuller 1967-9-25 16411 Butte Town of Brush Creek, Oroville-Quincy Highway, Sierra Nevada 1042 Comment
  CHSC32126  Saponaria officinalis L. Ahart 1974-10-22 668 Butte By rd near Sly Creek Dam, near Pinkard Creek which is near Sly Creek Reservoir. 762 Comment
  CAS-BOT-BC436856  Saxifraga Lowell Ahart 1975-4-2 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  CAS-BOT-BC436862  Saxifraga Lowell Ahart 1975-3-18 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  SEINET8720392 Image available Saxifraga integrifolia E. B. Copeland 1929-1 369 Butte Jonesville. 1550 Comment
  SEINET10483048  Saxifraga oregana Mary Susan Taylor 1977-7-15 Taylor 1405 Butte Butte Meadows, ca. 20 mi NE of Chico off Hwy 32. 1326 Comment
  CHSC34224  Scandix pecten-veneris M. S. Taylor 1981-5-1 3589 Butte E side of Hwy 70, ca. 4 air mi nw of Oroville. 91 Comment
  UCD128129  Scandix pecten-veneris W. R. Powell 1968-5-16 1506 Butte 1/2 mile northeast of Lake Wyandotte. 496 Comment
  CHSC34149  Sceptridium multifidum L. Ahart 1981-9-21 3197 Butte Along French Creek, ca. 100 m w of the swamp and where the road crosses the creek, ca. 1 mi s of Sly Creek Reservoir. 1300 Comment
  SEINET8726507 Image available Schmaltzia trilobata A. A. Heller 1915-1 11773 Butte Rock creek 12 miles northeast of Chico at the lower limit of the digger pine belt. Comment
  POM181779  Schoenoplectus acutus var. occidentalis H. F. Copeland 1923-6-4 354 Butte Nelson. Comment
  CAS-BOT-BC111653  Schoenoplectus mucronatus Malcom A. Nobs; Stanley Galen [S. Galen] Smith 1949-7-29 1086 Butte Weedy rice field, ca. 5 miles west of Richland. Comment
  CHSC56796  Scirpus congdonii L. P. Janeway 1988-7-29 3131 Butte Meadow near Humbug Summit Road, 1.5 mi northeast of the Snag Lake dam. 1767 Comment
  CHSC39618  Scleranthus annuus subsp. annuus Lowell Ahart 1983-4-1 3915 Butte Found along the edge of old Highway 40, near the water fountain, near the end of the road where it runs into Lake Oroville, about 4 miles south of Jarbo Gap. 350 Comment
  CHSC33234  Sclerolinon digynum R. A. Schlising; D. Ikeda, R. Banchero 1980-6-26 3785 Butte Meadow 0.1 mi s of Butte Meadows junct of Skyway and Humboldt Road. 1341 Comment
  CAS-BOT-BC239960  Scribneria bolanderi James Jokerst 1985-3-24 2172 Butte Near Serpentine Point 547 Comment
  CHSC42832  Scutellaria californica L. P. Janeway 1987-5-20 2074 Butte Along hwy 70 1.7 mi NE of Pulga bridge; N Fk Feather River at Poe Dam. 472 Comment
  CHSC62752  Scutellaria californica L. P. Janeway; Gail Kuenster, Perrie Cobb, Justine Biddison 1993-5-25 4356 Butte About 2.2 mi northeast of Lake Wyandotte; along Stringtown Road 1.3 mi northeast of the saddle where the road starts down to Lake Oroville. 381 Comment
  CHSC794  Scutellaria californica V. Holt 1931-3-6 Butte Forest Ranch. 548 Comment
  UC1094741  Scutellaria californica Francia Chisaki 1956-6-1 907 Butte 22 mi s of Butte-Plumas County line (on Hwy alt. #40) Comment
  CHSC112466  Scutellaria siphocampyloides Lowell Ahart 2013-5-27 18708 Butte About 150 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/4 miles (air) southwest of Forbestown. 763 Comment
  CHSC44282  Scutellaria siphocampyloides Vernon H. Oswald; Lowell Ahart 1988-6-17 3390 Butte East of Forbestown Rd. at the e end of Black Bart Rd. 743 Comment
  CHSC63645  Scutellaria siphocampyloides B. Castro; L. Hanson, R. Zebell 1989-5-30 313 Butte Ca 2 air mi SSW of the Ponderosa Reservoir on Lake Oroville, on Ponderosa Way (USFS Rd 20N24) ca 0.3 mi N of its jcn with Lower Forbestown Rd. 768 Comment
  JEPS102485  Secale cereale Lowell Ahart 2001-5-10 8741 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) SW of Gridley. 22 Comment
  HSC23383  Sedella pumila Larry D. Scott 1971-4-7 4 Butte 4 mi. NE of Chico, 20 yds. N of Skyway Comment
  POM93201  Sedella pumila C. C. Bruce 1897-04 1776 Butte Chico Comment
  CHSC60280  Sedum spathulifolium Kathleen McShea 1992-4-23 19 Butte Ca 3.8 mi s of Arch Rock Tunnel on Hwy 70. 45 mi sw of Quincy. 640 Comment
  SEINET10449688  Sedum spathulifolium subsp. purdyi Mary Susan Taylor 1980-5-27 Taylor 2689 Butte T21N R6E sc sec 30. Big Bend quad. On Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, large granite dome 998 Comment
  CHSC96139  Selaginella hansenii Lowell Ahart 2007-2-24 13583 Butte At and below the high water line on the west side of North Honcut Creek, on and around metavolcanic rock, Peter Ahart Ranch, about 3/4 mile north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville. 53 Comment
  JEPS127577  Selaginella hansenii L. P. Janeway 2016-11-9 12176 Butte Northern High Sierra Nevada. Plumas National Forest; rocky bench above Pulga Road 0.5 road-km north of Highway 70 at Pulga Bridge. Pulga 7.5' Quad. Comment
  HSC78630  Selaginella hansenii L. P. Janeway 1984-9-29 1177 Butte At top of Feather Falls on Fall River (a tributary to Middle Fork of Feather River), 'Feather Falls Scenic Area 579 Comment
  SEINET6336387  Selaginella hansenii J. T. Howell 1959-9-20 34716 Butte Feather River Highway at West Branch Bridge. Comment
  SFV11419  Senecio aronicoides M. L. Vincent 1967-6-25 676 Butte 0.25 miles west of Paskenta Ranger Station._x000B_[NOTE: this locality is messed up. Paskenta Ranger Station is in Tehama County and habitat there doesn't match pine trees and meadow mentioned on labels and in Vincent notebook.] Comment
  CHSC101087  Senecio vulgaris Lowell Ahart; John Dittes 2009-3-20 15502 Butte Open area along the Guardian Rock Trail, about 150 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Chico. 407 Comment
  CAS-BOT-BC364547  Senecio vulgaris Lowell Ahart 1986-11-7 5421 Butte East of the Feather River, north of the Oroville Gridley Highway, about 3 miles east of Gridley 28 Comment
  CHSC97657  Setaria parviflora Lowell Ahart 2007-9-30 14501 Butte West bank of North Honcut Creek, about 1 mile north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 32 Comment
  CHSC109760  Setaria pumila subsp. pumila Lowell Ahart 2012-10-20 18493 Butte About 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  CHSC102964  Setaria viridis Lowell Ahart 2009-7-9 16021 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
  JEPS94191  Sherardia arvensis Lowell Ahart 1998-4-29 7955 Butte ca. 7 mi. n. Oroville (grassy area n.e. of large parking area on North Table Mt. on e. side of Cherokee Rd.); North Table Mt. 426 Comment
  RSA754578  Sherardia arvensis L. Ahart 2009-4-17 15547 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
  POM193377  Sibbaldia procumbens E. B. Copeland 1930-7-6 418 Butte Jonesville. 2000 Comment
  CHSC29978  Sidalcea asprella Lowell Ahart 1980-5-12 2255 Butte Peter Ahart Ranch, ca 1.5 mi N and 2.75 mi E of Honcut; near North Honcut Creek. 50 Comment
  CHSC1045  Sidalcea calycosa F. Johnson 1937-7-25 Butte Above Covered Bridge, on Butte Creek. 152 Comment
  CHSC34962  Sidalcea calycosa M. J. Lavelle; R. Schlising 1975-10-4 8 Butte Small population in field at NE corner of East Avenue and Mariposa Avenue in Chico. 60 Comment
  SEINET11991650  Sidalcea calycosa Unknown 1974-1 5 Butte on S side of Hwy 32, ca 1 mi E of intersection with Hwy 99, Chico 76 Comment
  POM180917  Sidalcea diploscypha H. F. Copeland 1923-5-7 887 Butte Near Nelson Comment
  CHSC91992  Sidalcea gigantea L. P. Janeway 2005-9-4 8534 Butte Northern High Sierra Nevada. Along Road 24N13 crossing an uppermost small branch of Lockerman Creek; 0.6 km south-southwest of Logue Meadows. 1337 Comment
  JEPS97945  Sidalcea gigantea G. Clifton 1999-7-3 36019 Butte Pulga Comment
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  SEINET7055655  Sidalcea gigantea Dean W. Taylor 1995-8-6 15397 Butte Flora of the Northern Sierra Nevada. Near Concow Reservoir, about 6 miles east of Paradise, along Hoffman Road 0.3 miles west of Concow Road. Lassen National Forest. Elevation about 2200 feet. Comment
  CHSC44965  Sidalcea hartwegii Cathy Young 1988-4-24 12 Butte Ca. 5.5 mi ne of Chico and 30 yds se of Highway 32. 256 Comment
  SEINET3228076 Image available Sidalcea hartwegii A. A. Heller, H. E. Brown 1902-5-9 Butte Berry Canyon (Near Clear Creek). Comment
  UC108886  Sidalcea hartwegii Mrs. R. M. Austin June 1883 Butte near Chico; near Chico Comment
  UC726656  Sidalcea hartwegii A. A. Heller 1927-5-7 14366 Butte Paradise Grade Clear Creek, Paradise Grade Comment
  CHSC58273  Sidalcea hirsuta Lowell Ahart 1992-5-23 6771 Butte On the north side of Biggs Princeton Road, about 2 miles west of Biggs. 30 Comment
  SEINET10937544  Sidalcea malviflora subsp. celata Mary Susan Taylor 1978-7-21 Taylor 1834 Butte On N side of Oroville-Quincy Hwy, in open meadow, ca. 1 mi S of Butte-Plumas County line; Yellow Pine Forest. 1341 Comment
  CHSC44634  Sidalcea oregana subsp. spicata Lowell Ahart 1988-6-21 6049 Butte Along the edge of the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jargo Gap. 271 Comment
  CHSC99579  Silene antirrhina L. P. Janeway; David Toren, Heather Koeth, Duryea Delacroix 2008-6-11 9406 Butte Northern Sierra Nevada Foothills. Plumas National Forest; along French Creek Road about 3.0 road km northeast of Oroville-Quincy Hwy and 1.0 air km west of Mountain House; slopes east above Mosquito Creek. Old road cutbank. 902 Comment
  CHSC48265  Silene bernardina Vernon Oswald 1985-7-21 1909 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. On the edge of the road. 1737 Comment
  UC455230  Silene californica Miss Kate Conger 1907-1 Butte Brush Creek Comment
  CAS-BOT-BC385886  Silene douglasii E. B. Copeland 1931-6-19 634 Butte Jonesville, near the Summit 2100 Comment
  CHSC28491  Silene douglasii M. S. Taylor; J. D. Jokerst 1979-7-21 2146 Butte Along trail to Humboldt Peak at Humboldt Summit. 2133 Comment
  CHSC11855  Silene douglasii var. douglasii E. B. Copeland 1931-6-19 634 Butte Jonesville. Near 'the Summit. 2100 Comment
  CHSC45558  Silene gallica Lowell Ahart 1974-4-14 402 Butte Peter Ahart Ranch, about 2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 39 Comment
  UC185513  Silene gallica Mrs. R. M. Austin May, 1896 859 Butte Little Chico Creek Comment
  CAS-BOT-BC389007  Silene laciniata subsp. californica Mrs. Eva Pattee 1923-5-15 s.n. Butte Shady Rest near Cresta Comment
  CAS-BOT-BC389012  Silene laciniata subsp. californica Lowell Ahart 1989-5-29 6313 Butte Along the road to the Forbestown Reservoir, about 1/2 mile south-west of the Forbestown Reservoir, about 4 miles north-east of Forbestown 548 Comment
  UCSB63726  Silene laciniata subsp. californica 1986-4-19 Butte 11.5 m. N of Chico Municipal Airport on Cohasset Hwy. 853 Comment
  JEPS110078  Silene lemmonii Lowell Ahart 2006-7-16 12971 Butte West of a large wet meadow and bog, about 5 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
  RSA4211  Silene lemmonii E. B. Copeland 1929-7-15 359 Butte Jonesville. 1550 Comment
  UC398910  Silene lemmonii E. B. Copeland 1929-7-15 359 Butte Jonesville 1550 Comment
  SEINET10537593  Silene pratensis Mary Susan Taylor 1982-6-24 Taylor 4726 Butte T23N R5E center sec 30. Pulga SW quad. E side of Flea Mt ridge, ca. l mi se of Flea Mt, 1.7 mi se of Ponderosa Way (Rim Rd), 8.9 mi n of Jarbo Gap on Hwy 70, ne of Oroville. Mixed Evergr Forest Comment
  CDA3456  Silene vulgaris M. S. Bergseng, L. C. McCorkindale 1959-5-22 2441 Butte Yankee Hill Area. 0 Comment
  CAS-BOT-BC364793  Silybum marianum A. A. Heller 1923-10-13 13831 Butte At Chico Comment
  CAS-BOT-BC75027  Sisymbrium altissimum Lowell Ahart 1987-5-6 5513 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 274 Comment
  CHSC35757  Sisymbrium orientale R. E. Preston 1982-6-9 299 Butte On w side of The Esplanade at bridge over Chico Creek, Chico. 59 Comment
  CHSC38871  Sisyrinchium bellum Vernon Oswald 1983-3-31 229 Butte Upper Bidwell Park, on the s side of Upper Park Rd. 300 ft w of Parking Area N (Salmon Hole). 152 Comment
  UC845083  Sisyrinchium bellum A. A. Heller 1938-7-20 15285 Butte upper end of Snag Lake (7 mi e of Chaparral) 1524 Comment
  CHSC41256  Sisyrinchium idahoense S. C. Morey 1983-7-21 475 Butte Cherry Hill Meadow. On n side of humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC64242  Sisyrinchium idahoense S. C. Morey 1983-8-1 663 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC113162  Solanum americanum Lowell Ahart 2013-11-17 19264 Butte Along the sides of McCabe Creek, below the high water line of Lake Oroville, about 5/8 of a mile southwest of the Enterprise Bridge across Lake Oroville. 245 Comment
  JEPS115053  Solanum americanum Lowell Ahart 2007-11-3 14573 Butte Below the high water line of Lake Oroville, about 1/2 mile east of the Power House below Kunckle Reservoir, about 3/4 mile north of the Lime Saddle Campground, about 5 1/4 miles (air) southeast of Paradise 257 Comment
  CAS-BOT-BC157056  Solanum umbelliferum A. A. Heller; H. E. Brown 1902-5-6 5455 Butte Berry Canyon (Near Clear Creek) Comment
  POM308449  Solidago californica Henry J. Ramsey, Henry J. Ramsey 1939-10-15 3058 Butte Feather River Hwy. Comment
  SEINET10475256  Solidago canadensis subsp. elongata Mary Susan Taylor 1982-8-16 Taylor 4988 Butte T24N R4E sw/se sec 28. Paradise NE quad. S end of Stirling City, along both sides of the Skyway. Mixed Evergreen Forest; 3400 ft. 1036 Comment
  SEINET10475257  Solidago canadensis subsp. elongata Mary Susan Taylor 1980-7-6 Taylor 3072 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
  UCD136103  Soliva sessilis H. Clem Meith 1961-4-4 s.n. Butte Oroville. Comment
  CAS-BOT-BC365984  Sonchus asper Lowell Ahart 1980-5-4 2156 Butte Thermalito 65 Comment
  CHSC113916  Sonchus asper subsp. asper Lowell Ahart 2014-5-13 19462 Butte Below the high water line of Lake Oroville, along the old paved road, about 50 yards west of the Enterprise Boat Ramp, about 11 miles (air) east of Oroville. 259 Comment
  CHSC66157  Sonchus tenerrimus Vernon H. Oswald; Lowell Ahart 1996-5-27 7670 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. In pasture in the S paddock of Tract 7, Sanctuary II. 32 Comment
  CHSC9344  Sorghum halepense B. Anthony 1968-5-8 513 Butte 2 miles E. of Hamilton City, Hwy. 32. Comment
  POM181467  Sorghum halepense H. F. Copeland 1923-8-14 847 Butte Near Richvale. Comment
  JEPS117229  Spergularia bocconi Lowell Ahart 2010-5-7 16610 Butte Area of erosion control, disk golf area, on a ridge about 200 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 369 Comment
  CHSC37436  Spergularia marina M. S. Taylor; L. Ahart, J. Jokerst 1982-4-28 4348 Butte Graylodge Wildlife Refuge, n side of Rutherford Rd, ca. 1.8 mi w of its jct with Pennington Rd at the checking station, ca. 12 mi sw of Gridley. 21 Comment
  CHSC35001  Spergularia rubra R. A. Schlising 1981-6-11 4073 Butte N part of county, above Butte Meadows and SW of Cherry Hill Campground. Along Butte Creek. Comment
  CHSC28903  Sphenosciadium capitellatum M. S. Taylor 1978-7-18 1724 Butte On N side of Butte Creek, ca. 1/8 mi W of Road Island Jct, at jct of Butte Creek and Old Humboldt Rd, ca. 1 mi W of Cherry Hill Campground. 1524 Comment
  CHSC113505  Spiraea douglasii Lowell Ahart 2014-7-16 19686 Butte Southwest part of a large wet meadow (some bog), about 120 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CHSC1610  Spiraea douglasii R. M. Staley 1952-7-13 Butte Butte Creek. Comment
  CHSC94495  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
  CHSC27193  Spiraea prunifolia P. Moyer 1972-3-2 96 Butte CSUC Campus. Lassen Hall Bridge, Citrus Ave. 60 Comment
  CHSC49641  Spirodela polyrhiza Vernon Oswald 1987-4-20 2334 Butte Butte Creek Preserve on the s side of the creek ne of the Skyway. On the edge of a dredger pond. 85 Comment
  CHSC79523  Stachys ajugoides var. rigida G. F. Hrusa; T. D. Wilfred 1997-7-3 13969 Butte Northern California. Sierra Nevada. NE side of upper end of Paradise Lake. Where last tributaries from E enter. [Lat./Long. on label is '39 52 N; 121 35 W']. 810 Comment
  UC726522  Stachys ajugoides var. rigida A. A. Heller 1917-7-26 12815 Butte Butte Meadows 1280 Comment
  JEPS114699  Stachys pycnantha Lowell Ahart 2008-7-23 15154 Butte on the N side of the South Fork of the Feather River, about 10 yds E of where Sucker Creek enters the South Fork of the Feather River, below the high water line of Lake Oroville, about 1/4 mi W of the Ponderosaedge 258 Comment
  UC1303077  Stachys pycnantha A. A. Heller 1928-7-14 14684 Butte At Butte Meadows on a tributary of Butte Creek. Comment
  SEINET10499271  Stachys pycnantha Lowell Ahart 1983-9-17 Ahart 4428 Butte T22N R4E se section 31. Ca. 1/8 mi ne of Kunkle Reservoir, south of Paradise. Foothill Woodland; 600 m. 600 Comment
  CHSC42243  Stachys stricta L. P. Janeway 1986-10-19 1942 Butte Along Table Mtn Rd ca 0.7 mi NW of Garden Dr. and at base of RR fill slope; overlooking Thermalito Forebay. 91 Comment
  UC179507  Stebbinsoseris heterocarpa A. A. Heller 1914-4-13 11282 Butte 8 mi north of Oroville. Comment
  UC1609330  Stellaria crispa Lowell Ahart 1993-10-3 7268 Butte about 2 mi ne Coyote Gap (w branch of Wildcat Creek, on the s side) 1402 Comment
  RSA0041907  Stellaria longipes subsp. longipes H. F. Copeland 1927-9-3 490 Butte Jonesville. 1524 Comment
  CHSC107231  Stellaria media Lowell Ahart 2011-6-3 17361 Butte Wood chipped planter area between Bidwell Mansion parking area and Gateway Science Museum, Chico. 60 Comment
  CHSC44489  Stellaria nitens Lowell Ahart 1988-3-27 5935 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. 274 Comment
  JEPS124176  Stellaria nitens Lowell Ahart 2015-3-14 19952 Butte About 1 1/4 miles (air) northwest of Cherokee Road, about 7 miles (air) north of Oroville. Comment
  CAS-BOT-BC395112  Stellaria nitens Ira L. Wiggins 1925-3-25 1440 Butte On road one half mile above Pence on Pence-Magalia road Comment
  CHSC61639  Stellaria obtusa Lowell Ahart 1993-9-13 7229 Butte On the south side of Bolt Creek, about 1 mile south-east of Butte Meadows. 1325 Comment
  RSA4441  Stellaria obtusa E. B. Copeland 1931-7-18 636 Butte Jonesville, by Butte Creek 1500 Comment
  SEINET10474363  Stephanomeria tenuifolia Mary Susan Taylor 1979-8-4 Taylor 2173 Butte T23N R5E center of S border sec. 22/27. Ca. 1 mi N of Cresta Powerhouse on Hwy 70, ca. 30 mi N of Oroville; granitic soils. 488 Comment
  SEINET10508386  Stipa californica Mary Susan Taylor 1979-7-21 Taylor 2164 Butte Humboldt Peak, at Humboldt Summit, tallest point in the county, on Butte- Tehama County line. 2155 Comment
  LA9449  Stipa lettermanii E. B. Copeland; 1929-7-16 342 Butte Jonesville 1550.0 Comment
  SEINET10508405  Stipa stillmanii Mary Susan Taylor, Lowell Ahart 1981-8-15 Taylor 4178 Butte T25N R4E sw 1/4 sw 1/4 sec. 33. Paradise NE quad. Both sides of the Skyway 1.8 mi S of Inskip. Yellow Pine Forest. 4100 ft. 1250 Comment
  CHSC93522  Streptanthus diversifolius L. P. Janeway 2006-4-23 8557 Butte Northern Sierra Nevada Foothills. North Table Mountain; at head of northern drainage into Campbell Creek/Beatson Hollow, 600 m north-northeast of Phantom Falls. Low southeast-facing slope of exposed blocky basalt. 393 Comment
  CAS-BOT-BC87030  Streptanthus drepanoides R. E. Preston 1982-4-22 254 Butte Ca. 0.6 mile ESE of Kunkle Reservoir, on west Branch Feather River arm of Lake Oroville, ca. 4.5 mile SE of Paradise. 280 Comment
  CHSC78132  Streptanthus drepanoides Lowell Ahart 2000-5-31 8420 Butte Below the high water line of Lake Oroville, about 400 yards east of where Kunkle Creek enters Lake Oroville, east of the Kunkle Power House, about 3 miles southeast of Paradise. 271 Comment
  CAS-BOT-BC87387  Streptanthus longisiliquus Lowell Ahart 1983-8-16 4283 Butte Sierra Nevada. Along edge of Humboldt Road, about 3 miles southwest of butte Meadows. 1450 Comment
  UCD116109  Streptanthus polygaloides R. E. Preston 1982-6-2 291 Butte 0.7 mile northeast of Lime Saddle Powerhouse, 4.5 miles southeast of Paradise. 304 Comment
  HSC32398  Streptanthus tortuosus Kitsy Kelly 1974-4-20 28 Butte Table Mtn. Volcanic area Comment
  HSC36683  Streptanthus tortuosus Patricia Datzman 1974-4-20 29 Butte N end of Table Mtn., near Oroville 305 Comment
  UCD116303  Streptanthus tortuosus Robert E. Preston 1984-6-19 463 Butte 1.6 km north of Merrimac site, west side of Oro-Quincy Highway. 1372 Comment
  HSC96716  Streptanthus tortuosus var. suffrutescens L. Ahart 2006-5-8 12582 Butte 1/3 mi. N of parking area, cow chute, and Cherokee Rd., N Table Mtn., 7 mi. N of Oroville 402 Comment
  UC877968  Styrax officinalis var. redivivus A. A. Heller 1915-5-25 11891 Butte ridge above Enterprise; Sierra Nevada 609 Comment
  LA44530  Styrax redivivus A. A. Heller; 1915-5-25 11891 Butte Sierra Nevada, ridge above Enterprise 609 Comment
  UCD119109  Styrax redivivus E. D. Phelps 1930-9-23 2151 Butte Pulga. Comment
  SEINET10465101  Symphoricarpos acutus Mary Susan Taylor 1978-7-18 Taylor 1696 Butte On top of Humboldt Peak, at Humboldt Summit, on Butte-Tehama County line. 2159 Comment
  CHSC11846  Symphyotrichum bracteolatum E. B. Copeland 1930-8-26 487 Butte Jonesville. 1500 Comment
  CAS-BOT-BC97691  Symphyotrichum chilense A. A. Heller 1914-9-3 11760 Butte On the Chico-Hamilton Road, 6 miles from Chico Comment
  CHSC103114  Symphyotrichum chilense Lowell Ahart 2009-8-23 16294 Butte Near small drainages, 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. 236 Comment
  CHSC13803  Symphyotrichum chilense K. R. Stern 1972-9-19 3780 Butte Dry margins of Perkins Lake, Llano Seco Rancho, ca 10 mi SW of Chico. Comment
  CHSC38323  Symphyotrichum chilense Vernon Oswald 1983-9-10 1037 Butte Upper Bidwell Park, Chico, about 200 ft. E of the parking lot at Day Camp. 91 Comment
  CHSC43239  Symphyotrichum chilense Lowell Ahart 1987-9-24 5896 Butte On a gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CHSC59498  Symphyotrichum chilense Lowell Ahart 1992-9-9 6920 Butte Along a deep wash, below the high water line of Lake Oroville, about 1/2 mile southeast of Kunkle Reservoir. 243 Comment
  CHSC69667  Symphyotrichum chilense Vernon H. Oswald 1983-6-14 688 Butte Upper Bidwell Park, Chico, beside Yahi Trail E of Brown's Hole. 207 Comment
  JEPS119919  Symphyotrichum chilense Lowell Ahart 2012-10-20 18486 Butte On the south side of Big Chico Creek, on the east side of the bridge, north of the restrooms, about 200 yards west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC64036  Symphyotrichum foliaceum var. parryi S. C. Morey 1983-9-18 Butte Cherry Hill Meadow. On N side of Humboldt Rd., ca. 3.2 mi E of Butte Meadows. 1414 Comment
  UC1594575  Symphyotrichum spathulatum Lowell Ahart 1992-8-2 6905 Butte about 3 (air) mi ne of, (in Concow Meadow) Concow Reservoir; Concow Meadow 1097 Comment
  CAS-BOT-BC98372  Symphyotrichum subulatum var. parviflorum A. A. Heller 1923-10-13 13828 Butte About the rice fields near Richvale Comment
  UCD86175  Taeniatherum caput-medusae John Thomas Howell 1962-6-15 37484 Butte Magalia. 731 Comment
  CHSC8565  Tetrapanax papyriferus M. MacArthur 1968-6-16 338 Butte E end of Aymer Jay Hamilton School, Chico State College Campus. 60 Comment
  CHSC111385  Thalictrum fendleri var. polycarpum Lowell Ahart 2012-4-30 17946 Butte On the south side of the path, near the sign, southwest of the intersection of Vallombrosa Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. 80 Comment