Search Results — 2000 specimen records retrieved (1353 records with coordinates)
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(For large data reqests, please contact Jason Alexander, jason_alexander@berkeley.edu.)

 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/consortium/).
 Records are made available under the CCH Data Use Terms.

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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  HSC89414  Abies grandis P. A. Daly 1986-3-12 92 Humboldt Trinidad Head, along trail 61 Comment
  SBBG11073  Abies grandis D. E. Breedlove 1961-7-4 658 Humboldt US Hwy 299, 3.1 mi E of the N fork of the Mad River 502 Comment
  UC502904  Abies grandis Joseph P. Tracy 1932-3-20 9781 Humboldt Trinidad Northern Coast Region, Trinidad 60 Comment
  CAS-BOT-BC73483  Abies magnifica Henry M. Pollard 1946-8-28 s.n. Humboldt Near summit of Orleans Mts. 1828 Comment
  SEINET10838870  Abronia latifolia Mary Merello 1993-6-19 Merello 663 Humboldt Along Petrolia-Capetown Road. Pacific Coastal dunes. 40 Comment
  RSA0025085  Abronia latifolia Patricia Wilder 1968-8-21 4402 Humboldt Northern coastal arm of Humboldt Bay, ca. 2 miles SW of Samoa, near bay by roadside. Humboldt Bay drainage area. 5 Comment
  SD120883  Abronia latifolia Roman Gankin 1965-8-6 558 Humboldt Samoa Peninsula, 1.3 miles south of Samoa, west of road Comment
  BLMAR389  Abronia umbellata subsp. breviflora Jennifer Anthony-Wheeler 2004-10-10 389 Humboldt Samoa/manilla dunes, Due west of water line tower number77 3 Comment
  RSA28775  Abronia umbellata subsp. breviflora H. E. Parks 1941-09 24212 Humboldt Mouth of Little River. Comment
  RSA186842  Acaena novae-zelandiae T. C. Fuller 1966-10-4 15236 Humboldt 1 mile NW of Fieldbrook Comment
  RSA183640  Acer circinatum D. E. Anderson 1965-5-8 3627 Humboldt 0.6 miles west of bridge over North Fork of Mad River, along Highway 299 Comment
  HSC2817  Acer macrophyllum D. E. Anderson 1962-3-17 1933 Humboldt 3 mi. W of Bridgeville along Hwy. 36 Comment
  HSC62677  Acer macrophyllum Michelle Stevens 1979-4-15 41 Humboldt Richardson Grove by Eel River 30 Comment
  UCSB28371  Acer macrophyllum Phelps, M. 1972-3-22 Humboldt 2 mi. south of Old Briceland Bridge along Eel River, 300 yds. from shore. 182 Comment
  HSC57890  Achillea millefolium Overton, Butler 1979-7-31 11450 Humboldt Near Water Dog Lakes, close to the town of Hoopa 1830 Comment
  HSC58151  Achillea millefolium G. L. Clifton, Griswold 1979-8-2 12203 Humboldt Near Oregon Creek, close to the town of Hoopa 1663 Comment
  HSC73474  Achillea millefolium Gail Newton 1980-7-11 1312 Humboldt Near Red Mtn. 1341 Comment
  JEPS37080  Achillea millefolium W. L. Jepson 1932-7-30 16460 Humboldt Bull Creek Comment
  UCD128286  Achillea millefolium Linda M. Barker 1976-6-1 1541 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  RSA26852  Achillea millefolium var. californica I. L. Wiggins 1940-7-10 s.n. Humboldt Big Lagoon. Comment
  UC1225749  Achlys californica Joseph P. Tracy 1946-6-23 17594 Humboldt Kneeland Prairie 762 Comment
  UC9738  Achlys californica Harley P. Chandler June, 1901 1293 Humboldt Hupa Indian Reservation North Coast Ranges, Hupa Indian Reservation 182 Comment
  JEPS47754  Achlys triphylla subsp. triphylla Lincoln Constance 1934-6-1 773 Humboldt Bull Cr. rd. between Dyerville Bridge and Bull Creek flat grove (mouth of Bull Cr.); S. Fork Eel R., Bull Creek Region 45 Comment
  JEPS52978  Achlys triphylla subsp. triphylla W. L. Jepson 1932-7-29 16446 Humboldt Van Duzen R., Grizzly Flat Comment
  UC1103142  Achnatherum lemmonii Joseph P. Tracy 1921-5-30 5486 Humboldt Kneeland Prairie Northern Coast Ranges, Kneeland Prairie 762 Comment
  RSA167290  Achnatherum lemmonii var. lemmonii Joseph P. Tracy 1951-6-26 19563 Humboldt Halfway between Snow Camp & Twin Lakes (at Preston's old gate near road) Comment
  BLMAR183  Acmispon brachycarpus Donald Hazlett 1994-6-7 183 Humboldt King range, near horse Mt. Ridge rd 670 Comment
  SEINET12094122  Actaea rubra F. H. Utech 1988-1 88 -268 Humboldt 14 mi W of Bridgeville enroute to Carlotta on CA 36, Van Duzen County Park, Pamplin Grove 50 Comment
  HSC57018  Adenocaulon bicolor Overton, Butler 1979-7-24 9630 Humboldt Near Friday Camp, close to the town of Willow Creek. 1250 Comment
  SD73189  Adenocaulon bicolor Darley F. Howe 1969-6-4 Humboldt 14.6 miles east of Alton on #36 89 Comment
  UC164803  Adenocaulon bicolor Joseph P. Tracy 1909-7-31 3042 Humboldt Kneeland Prairie; Northern Coast Ranges, Kneeland Prarie 762 Comment
  HSC44330  Adiantum aleuticum Brad Klipfel 1975-6-17 679 Humboldt Horse Mtn. Comment
  UCR123954  Adiantum aleuticum George K. Helmkamp, E. A. Helmkamp 2001-7-8 6969 Humboldt North Coast, CA Hwy 36, along the Van Duzen River, 19.6 mi east of CA Hwy 101, west of Bar W Road 137 Comment
  CAS-BOT-BC62290  Adiantum aleuticum Doris K. Kildale 1926-8-8 2448 Humboldt Bull Creek Flat Comment
  HSC958  Adiantum aleuticum S. J. Moore 1965-5-12 18 Humboldt Gold Beach Comment
  UCSB29304  Adiantum jordanii Phelps, M. 1972-3-23 Humboldt 1.5mi from Garberville, along Old Briceland Rd., 1000 yards N of roadside 213 Comment
  RSA178539  Aesculus californica Joseph P. Tracy 1950-6-21 18856 Humboldt Trinity River Valley, near the South Fork: At mouth of South Fork, on west side. 183 Comment
  HSC100911  Aesculus californica Carl C. Marshall May 1884 64 Humboldt Bear River. Comment
  HSC98730  Agastache urticifolia Cara Witte 2007-7-20 553 Humboldt Board Camp Butte. Forest Serivce Road 4E27. 1502 Comment
  UC1239672  Agastache urticifolia Joseph P. Tracy 1934-7-18 13445 Humboldt Grouse Mountain; North Coast Ranges, Grouse Mountain 1524 Comment
  RSA183633  Ageratina occidentalis D. E. Anderson 1965-9-5 4094 Humboldt Along Mad River, ca. 3 miles south of Blue Lake. Comment
  UC1239508  Agoseris apargioides var. maritima Joseph P. Tracy 1918-7-28 5090 Humboldt Ocean Beach Northern Coast Region Comment
  HSC57685  Agoseris aurantiaca G. L. Clifton, Griswold 1979-7-25 10901 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1784 Comment
  RSA167313  Agoseris aurantiaca Joseph P. Tracy 1949-8-7 18441 Humboldt Trinity Summit, meadow at Box Camp 1463 Comment
  UC582754  Agoseris grandiflora var. grandiflora Joseph P. Tracy 1930-7-6 8842 Humboldt Kneeland Prairie Kneeland Prairie 762 Comment
  UC249885  Agoseris grandiflora var. grandiflora Joseph P. Tracy 1923-7-4 6522 Humboldt s South Yager Creek 762 Comment
  RSA167315  Agoseris heterophylla Joseph P. Tracy 1950-7-6 19006 Humboldt On the Albee Road 2 miles south of Burr Valley 1159 Comment
  UC1199486  Agoseris heterophylla var. heterophylla Joseph P. Tracy 1938-6-9 15888 Humboldt top of ridge 3 mi w of Harris 914 Comment
  UC582741  Agoseris heterophylla var. heterophylla Joseph P. Tracy 1933-5-30 12417 Humboldt (near Garberville) Redway 152 Comment
  RSA87118  Agrostis densiflora Joseph P. Tracy 1927-6-26 8216 Humboldt Stone Lagoon Comment
  CAS-BOT-BC127277  Agrostis exarata Joseph P. Tracy 1904-7-10 2119 Humboldt Northern Coast Region. Eureka. 60 Comment
  HSC102149  Agrostis exarata M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-3 1056 Humboldt Patterson Meadows 1566 Comment
  HSC98510  Agrostis exarata Cara Witte 2008-8-6 1005 Humboldt Board Camp Mountain; 1 mile south of Forest Service Road 4N38 and National Forest 1 intersection. 1416 Comment
  RSA21206  Agrostis exarata C. B. Wolf 1937-8-10 9095 Humboldt Big Lagoon, so. side, w. side of Redwood Highway 6 Comment
  SEINET4558396  Agrostis exarata J. P. Tracy 1902-1 1757 Humboldt Immediate vicinity of Eureka 152 Comment
  UC1145154  Agrostis exarata Joseph P. Tracy 1938-7-11 16050 Humboldt sand dunes near Samoa Humboldt Bay 6 Comment
  UC34115  Agrostis exarata Joseph Burtt Davy and Walter C. Blasdale 1899-5 6216 Humboldt Eureka Comment
  UC552713  Agrostis exarata Joseph P. Tracy 1935-5-25 13857 1/2 Humboldt Fort Seward 106 Comment
  UCD52344  Agrostis exarata P. B. Kennedy 1923-8-5 s.n. Humboldt Eel River, west fork, between Phillipsville and Garberville. Comment
  UCD52682  Agrostis hallii P. B. Kennedy 1928-6-14 s.n. Humboldt Stoddard Store, near Garberville. Comment
  UCD52689  Agrostis hallii P. B. Kennedy 1923-8-2 s.n. Humboldt Bluff Creek Camp, Klamath River. Comment
  RSA10019  Agrostis idahoensis Joseph P. Tracy 1932-7-16 10608 Humboldt Klamath Mtns., Trinity Summit, Corral Prairie 1524 Comment
  HSC89897  Agrostis microphylla Leonel Arguello 1989-7-7 Humboldt Lanphere-Christensen Dunes Preserve, 3 mi W of Arcata, south-west quadrant of Fernstrom-Root parcel. Comment
  CAS-BOT-BC138636  Agrostis stolonifera Carl B. Wolf 1927-8-28 1189 Humboldt Eureka Bay, on the road to Arcata. Comment
  CHSC36406  Agrostis stolonifera Donald M. Burk 1981-7-25 54 Humboldt At junction of Rd. 5N10 and Rd. 5N10C. 1249 Comment
  HSC45216  Aira caryophyllea M. Alcasas 1978-6-3 117 Humboldt Titlow Hill Rd., 1.2 mi from Hwy. 299 1463 Comment
  HSC65424  Aira caryophyllea J. P. Smith, J. O. Sawyer 1973-5-12 6683 Humboldt 3.3 mi. from Redwood Creek on Hoopa Rd. Comment
  HSC70968  Aira caryophyllea R. York 1980-5-17 541 Humboldt Near Le Perron Peak 1066 Comment
  HSC24612  Aira caryophyllea C. E. Fellows 1965-5-19 88 Humboldt 1.6 mi. S of 7th St. on Hwy. 101 at bridge, E side of Hwy., S side of bridge Comment
  CAS-BOT-BC138330  Aira caryophyllea var. caryophyllea Ashley C. Browne 1936-6-11 s.n. Humboldt Patrick's Point State Park. Comment
  HSC33761  Aira praecox Ron Ralston 1975-5-24 81 Humboldt Samoa Dunes off Samoa Blvd., across from boat landing Comment
  UC34056  Aira praecox J. P. Tracy 1900-6-5 849 Humboldt Immediate vicinity of Eureka 0 Comment
  UC13826  Allium acuminatum Harley P. Chandler June, 1901 1349 Humboldt Hupa Indian Reservation Morth Coast Ranges, Hupa Indian Reservation 152 Comment
  HSC102062  Allium campanulatum M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 964 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  HSC73663  Allium campanulatum M. A. Baker 1980-7-15 2974 Humboldt Near Whiting Ridge. 1341 Comment
  CAS-BOT-BC135843  Allium hoffmanii Thomas W. Nelson; James L. Nelson 1980-6-10 5440 Humboldt Along branch road off Swayback Ridge Road ca. 1/2 mile east of junction - Six Rivers National Forest 1371 Comment
  HSC65876  Allium hoffmanii Gail Newton 1980-7-11 1309 Humboldt Near Red Mtn. 1341 Comment
  RSA167424  Allium unifolium Joseph P. Tracy 1950-6-25 18890 Humboldt Burr Valley. Comment
  CAS-BOT-BC451304  Allotropa virgata Volney Rattan no date on label; presented 1903 s.n. Humboldt 20 mi. above Orleans Comment
  HSC58328  Alnus incana subsp. tenuifolia Overton, Butler 1979-8-2 12626 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  CAS-BOT-BC169538  Alnus rubra Carl B. Wolf 1927-8-22 796 Humboldt Big Lagoon Comment
  HSC3391  Alnus rubra J. W. Johnson 1962-3-15 1138 Humboldt Along Lanphere Lane near the swamp, Samoa Peninsula Comment
  HSC3394  Alnus rubra J. W. Johnson 1961-9-4 1088 Humboldt Along Lanphere Lane near the swamp, Samoa Peninsula Comment
  RSA28320  Alnus rubra E. K. Balls, P. C. Everett 1953-10-12 18635 Humboldt 5.6 mi. n. of Little River, Hwy 101 between Arcata and Crescent City. 61 Comment
  RSA778733  Alnus rubra Lyman Benson 1929-7-19 1878 Humboldt Mouth of Matole [Mattole] River. Comment
  SEINET201030  Alopecurus aequalis J. P. Tracy 1923-6-27 6381 Humboldt Trinity River Valley near the S Fork shores of Lack Pond 183 Comment
  UCD55908  Alopecurus geniculatus J. Lenz 1950-6-1 s.n. Humboldt Cranell. Comment
  HSC8895  Alopecurus pratensis D. J. McVean 1965-4-19 18 Humboldt Arcata bottoms, along Jackson Rd. at intersection with Samoa Blvd. Comment
  HSC8903  Alopecurus pratensis R. H. Berg 1963-4-11 24 Humboldt Arcata Bottoms, 2 mi. W of Arcata Comment
  JEPS40954  Ambrosia chamissonis Joseph P. Tracy 1934-10-21 13688 Humboldt along coast in front of s end of Stone Lagoon; Dry Lagoon, Stone Lagoon 3 Comment
  CAS-BOT-BC13699  Ambrosia chamissonis Kenneth Clark 1981-5-24 1396 Humboldt Shelter Cove, 100 yards west of Dead Man's Gulch. Point Delgada quad. 3 Comment
  CAS-BOT-BC13707  Ambrosia chamissonis A. A. Heller 1924-7-21 13869 Humboldt Salt marsh at Eureka Comment
  BLMAR626  Amelanchier alnifolia var. semiintegrifolia Jennifer Wheeler 2011-6-15 626 Humboldt Lacks Creek, Pine Ridge Road 914 Comment
  CAS-BOT-BC142884  Amelanchier alnifolia var. semiintegrifolia Doris K. Kildale 1927-7-17 3756 Humboldt Bug Creek 792 Comment
  CAS-BOT-BC142886  Amelanchier alnifolia var. semiintegrifolia Doris K. Kildale 1927-5-13 3135 Humboldt Redwood Creek at Berry's 289 Comment
  UC418998  Amelanchier alnifolia var. semiintegrifolia H. E. Parks, J. P. Tracy 1925-6-25 3775 Humboldt Lawrence Creek Comment
  HSC56327  Amelanchier pallida Overton, Butler 1979-8-2 12680 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  HSC46959  Ammophila arenaria J. P. Smith, Thomas W. Nelson 1977-6-30 9201 Humboldt Samoa Peninsula just E of the drag strip 6 Comment
  SACT000320  Ammophila arenaria D. Shillingbury 1963-5-11 Humboldt Coastal strand Comment
  HSC59142  Anagallis arvensis Terry Roth 1979-4-21 13 Humboldt Misty Mtn. Tree Farm Rd. off of Hookton Rd., near residence 46 Comment
  UC1198610  Anagallis arvensis Joseph P. Tracy 1912-6-9 3676 Humboldt Alton Northern Coast Region, Alton 30 Comment
  HSC79547  Anagallis arvensis Kenneth Clark 1980-4-18 572 Humboldt 300 yds. E of Dead Man's Gulch; widespread through Shelter Cove 5 Comment
  POM288758  Anaphalis margaritacea Lyman Benson 1929-7-12 1747 Humboldt Weott Ranger Station; S Fork Eel River. Comment
  RSA416575  Anaphalis margaritacea C. B. Wolf 1937-8-13 9213 Humboldt North Coast Range, 9 miles NE of Blue Lake on Lord Ellis Road. 244 Comment
  SEINET10761471  Anaphalis margaritacea J. Richard Abbott, B. S. Carlsward 1999-7-7 Abbott 13013 Humboldt On U.S. 101, near Holmes, 1.76 km south of Stafford Road. Comment
  CAS-BOT-BC391788  Anemone deltoidea Joseph P. Tracy 1930-7-16 8964 Humboldt Northern Coast Ranges. South Fork Mountain; near McKay Camp 1676 Comment
  HSC18007  Anemone deltoidea J. F. Knezevich 1968-5-13 427 Humboldt Near Arcata above Freshwater Forest Comment
  HSC63009  Anemone deltoidea M. Dean Griswold Jr. 1979-4-21 24 Humboldt N side of Hwy. 36 Comment
  UC634952  Anemone deltoidea H. L. Mason 1929-5-9 5280 Humboldt Bull Creek Flat Comment
  HSC98540  Anemone oregana Cara Witte 2008-6-9 705 Humboldt Board Camp Mountain. Forest Service Road 4N38. 1418 Comment
  HSC76205  Angelica arguta Overton, Butler 1979-8-2 12536 Humboldt Near Bret Hole, close to the town of Hoopa 1554 Comment
  UC1103416  Angelica genuflexa Joseph P. Tracy 1947-8-24 17895 Humboldt Trinity Summit, at Box Camp Trinity Summit; , Box Camp 1463 Comment
  HSC48315  Angelica tomentosa Brad Klipfel 1973-8-3 303 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  UC183690  Angelica tomentosa Joseph P. Tracy 1913-9-9 4391 Humboldt Northern Coast Ranges, at s end of Big Lagoon Big Lagoon Big Lagoon Big Lagoon; Northern Coast Ranges, Big Lagoon 30 Comment
  HSC5981  Anisocarpus madioides Frances Oldridge 1945-1 Humboldt Kneeland Comment
  HSC56443  Antennaria howellii Griswold, Butler 1979-7-12 7190 Humboldt Near Groves Prairie, close to the town of Willow Creek. 1256 Comment
  RSA254784  Anthemis cotula Thomas W. Nelson 1973-8-19 1111 Humboldt McKeown Ranch north of Dinsmore Comment
  HSC10097  Anthoxanthum occidentale D. E. Anderson 1963-3-23 2401 Humboldt 2 mi. N of Beaver School Comment
  UCD85497  Anthoxanthum occidentale H. S. Yates 1936-6-22 5850 Humboldt 4 miles NE of Bald Mtn. Comment
  RSA10084  Anthoxanthum odoratum Joseph P. Tracy 1925-7-5 7164 Humboldt High Prairie, on Bald Mountain. 1067 Comment
  UC1541539  Anthoxanthum odoratum Harold E. Parks May 1933 4301 Humboldt Trinidad, Spruce Cove Spruce Cove; Trinidad, Spruce Cove Comment
  UC569482  Anthoxanthum odoratum H. S. Yates 1936-6-23 5853 Humboldt 2 mi e of mouth of Mad River 30 Comment
  RSA425834  Antirrhinum vexillocalyculatum subsp. breweri H. M. Pollard 1948-7-27 s.n. Humboldt Near mouth of Red Cap Creek. Comment
  HSC40265  Aphanes occidentalis Linda M. Barker 1976-4-30 1413 Humboldt 3 mi. W of Arcata Comment
  UC1198743  Aphanes occidentalis Joseph P. Tracy 1934-3-11 13149 Humboldt Weitchpec 121 Comment
  UC303163  Aphanes occidentalis Joseph P. Tracy 1925-5-30 7018 Humboldt Bridgeville; Northern Coast Ranges 228 Comment
  HSC18044  Aquilegia formosa D. E. Anderson 1965-5-1 3568 Humboldt Along Hwy. 96, 1.9 mi. N of Willow Creek Comment
  HSC44506  Arabis glabra Brad Klipfel 1973-7-1 121 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  UC183631  Arceuthobium campylopodum Joseph P. Tracy 1912-9-1 3984 Humboldt Eureka Northern Coast Region 0 Comment
  UC1198126  Arceuthobium campylopodum J. P. Tracy 1901-6-23 1178 Humboldt near Ryan's Slough Eureka vicinity 0 Comment
  UC1121508  Arctostaphylos A. E. Wieslander 1931-5-17 192 Humboldt Orick-Orleans Rd Hoopa Quadrangle, Bald Hills Comment
  UC1182190  Arctostaphylos J. A. Delapp 1959-10-7 57 Humboldt 5 3/4 mi ne Schoolits Peak (Wiregrass Prairie, Plot V1); Quad 11 C-1 853 Comment
  UC314643  Arctostaphylos Joseph P. Tracy 1923-3-17 6156 Humboldt Garberville Northern Coast Ranges 121 Comment
  UC775000  Arctostaphylos Carl B. Wolf 1937-8-13 9226 Humboldt 8 mi e Hoopa Valley; North Coast Range 1219 Comment
  JEPS38977  Arctostaphylos canescens Joseph P. Tracy 1935-7-14 14064 Humboldt Horse Mountain 1432 Comment
  SDSU1488  Arctostaphylos canescens D. F. Howe 1965-8-12 4129 Humboldt 7.9 miles south of Honeydew. 610 Comment
  CAS-BOT-BC23771  Arctostaphylos columbiana Joseph P. Tracy 1945-3-30 17497 Humboldt Eureka 45 Comment
  CAS-BOT-BC23774  Arctostaphylos columbiana Joseph P. Tracy 1945-5-15 17510 Humboldt Kneeland Prairie 670 Comment
  HSC7623  Arctostaphylos columbiana R. Spellenberg, D. Sutherland, A. Sylvester 1966-3-28 1381 Humboldt Lord Ellis Summit on Hwy. 299, about 7 mi. W of Redwood Creek Comment
  UCD50673  Arctostaphylos columbiana D. Sanchez-Mata 1997-9-20 s.n. Humboldt Hoopa; Big Hill Lookout Road. 1230 Comment
  SEINET11984909  Arctostaphylos columbiana Unknown 1965-1 543 A Humboldt top of Chimisal Mountain W of Wailaki Recreation Area, Bureau of Land Management Comment
  HSC100245  Arctostaphylos densiflora J. P. Smith, J. O. Sawyer 2010-5-2 12794 Humboldt Along Hwy. 96, E of Orleans 244 Comment
  CHSC85572  Arctostaphylos glandulosa L. P. Janeway 2003-7-30 7948 Humboldt High North Coast Ranges. Along Friday Ridge Road, at south end of Friday Ridge, 1.0 km (air) east-southeast of Friday Camp. Roadside. 1359 Comment
  SEINET11984882  Arctostaphylos glandulosa Unknown 1965-1 545 Humboldt 6.5 mi W on Kings Mountain Rd, Pacific Range Wilderness Area Comment
  RSA632803  Arctostaphylos knightii Jon E. Keeley 1996-10-13 27761 Humboldt Bald Hills Road, eastern end of Redwood National Park, 25 km west of Highway 96, north of Eureka. 700 Comment
  RSA632805  Arctostaphylos knightii Jon E. Keeley 1996-10-13 27795 Humboldt Bald Hills Road, eastern end of Redwood National Park, 20-23 km west of Highway 96, north of Eureka. 600 Comment
  RSA633016  Arctostaphylos manzanita Jon E. Keeley 1996-10-13 27813 Humboldt Salyer Rest Area, east of Salyer, east of Willow Creek on Highway 299. 200 Comment
  SEINET11995491  Arctostaphylos manzanita W. Knight, Knight, I. 1988-1 6362 Humboldt Bald Hill Road about 21.5 mi from US 101 en route to Hoopa 930 Comment
  CAS-BOT-BC24370  Arctostaphylos manzanita subsp. manzanita Joseph P. Tracy 1937-4-3 15246 Humboldt Trinity River Valley, at Willow Creek. 152 Comment
  CAS-BOT-BC38836  Arctostaphylos manzanita subsp. manzanita C. Hart Merriam 1926-9-15 s.n. Humboldt Junction, South fork of the Trinity and Trinity River Comment
  JEPS38938  Arctostaphylos manzanita subsp. manzanita Joseph P. Tracy 1933-4-2 10949 Humboldt Willow Creek Trinity River Valley 152 Comment
  SEINET11989089  Arctostaphylos nevadensis subsp. knightii R. Gankin, Hildreth, W. R. 1967-1 1172 Humboldt 21.4 mi E of US 101 on Bald Hills Rd from Orick, French Camp Ridge Comment
  HSC70475  Arctostaphylos patula Gail Newton 1980-7-15 1588 Humboldt Near Sims Mtn. 1311 Comment
  JEPS38932  Arctostaphylos patula Joseph P. Tracy 1927-6-12 8136 Humboldt Horse Mountain 1432 Comment
  UC1173708  Arctostaphylos patula Joseph P. Tracy 1939-8-16 16419 Humboldt Grouse Mountain 1524 Comment
  CAS-BOT-BC43980  Arctostaphylos uva-ursi Jacob Sigg; Elizabeth McClintock; Walter Knight; Irja Knight 1981-2-25 4071 Humboldt Humboldt County 21 Comment
  CAS-BOT-BC43991  Arctostaphylos uva-ursi Walter Knight; Irja Knight 1981-3-1 4047 Humboldt Samoa Sandspit at Humboldt Bay Comment
  CAS-BOT-BC43994  Arctostaphylos uva-ursi Philip A. Munz 1954-7-25 19876 Humboldt in Coastal Strand Community, at Humboldt Lighthouse south of Samoa Comment
  CAS-BOT-BC47210  Arctostaphylos uva-ursi Doris K. Kildale 1927-3-4 2975 Humboldt Samoa peninsula. Comment
  UC1073330  Arctostaphylos uva-ursi George B. Rossbach 1955-6-10 380 Humboldt sandy point off Eureka; Fairhaven Comment
  UC1196870  Arctostaphylos uva-ursi Joseph P. Tracy 1937-9-26 15685 Humboldt near Samoa; Northern Coast Region, Humboldt Bay 6 Comment
  UCR178884  Arctostaphylos uva-ursi R. G. Swinney 1968-4-13 244 Humboldt North Coast, Lanphere's Preserve, west of Arcata 15 Comment
  RSA1903  Arctostaphylos uva-ursi var. coactilis C. B. Wolf 1930-10-28 1035 Humboldt Samoa. 15 Comment
  RSA246677  Arctostaphylos uva-ursi var. coactilis R. F. Thorne, Percy C. Everett, K. Thorne 1965-8-5 35156 Humboldt Samoa Dunes. 3 Comment
  CDA34337  Arctotheca calendula G. D. Barbe, T. C. Fuller 1989-6-8 4321 Humboldt Larry Pries dairy, 3.4 miles W of Main St., Centerville Beach Rd., Ferndale. 0 Comment
  UC1103321  Aristida oligantha Joseph P. Tracy 1921-9-4 5951 Humboldt near Willow Creek; Northern Coast Ranges, Trinity River Valley 152 Comment
  HSC8972  Aristida oligantha DWC 1956-8-2 Humboldt Garberville - Laughlin soil Comment
  HSC47569  Armeria maritima subsp. californica Sheila Logan 1978-4-10 113 Humboldt McKinleyville, foot of Hiller Rd. at Ocean Rd., at Mad River. Comment
  HSC59096  Armeria maritima subsp. californica Clark L. Miller 1979-5-24 2150 Humboldt Samoa Dunes off Samoa Blvd. Comment
  HSC100712  Arnica amplexicaulis Carl C. Marshall Jun 1886 273 Humboldt Trail E of Hoopa. Comment
  JEPS20972  Arnica discoidea Harley P. Chandler 1901-6-1 1400 Humboldt Klamath River North Coast Ranges, Klamath River 243 Comment
  JEPS20978  Arnica latifolia Joseph P. Tracy 1932-7-20 10736 Humboldt near Corral Prairie; Trinity Summit 1524 Comment
  HSC58599  Arnica parryi G. L. Clifton, Griswold 1979-7-25 10764 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1814 Comment
  HSC100423  Arnica parviflora Carl C. Marshall Jun 1886 281 Humboldt Mud Spring Camp. Comment
  UCD135923  Arrhenatherum elatius R. Wenk; P. Hopkinson, M. Hammond, and S. Spiegal 2008-6-6 832 Humboldt Humboldt Redwoods State Park. Look Prairie, 0.5 air mile north of Mattole Road, about 3 air miles west of Highway 101. 243 Comment
  SEINET11842962  Artemisia douglasiana F. H. Utech 1986-1 86 -412 Humboldt Cape Mendocino, along Pacific Ocean 6 Comment
  SEINET11853294  Artemisia douglasiana J. P. Tracy 1947-1 17892 Humboldt Trinity Summit at Box camp 1463 Comment
  UC449644  Artemisia dracunculus Joseph P. Tracy 1912-10-20 4002 Humboldt on sandy bars of Van Duzen River (Alton) 30 Comment
  BLMAR66  Artemisia pycnocephala Jennifer Anthony-Wheeler 1994-5-18 66 Humboldt Samoa dunes, growing outside wetland boundaries in Samoa Rec. area 6 Comment
  HSC4747  Artemisia pycnocephala H. E. Parks, S. T. Parks Jun 1952 24495 Humboldt Samoa Comment
  CAS-BOT-BC97246  Artemisia suksdorfii Doris K. Kildale 1926-8-12 2491 Humboldt Moonstone Beach Comment
  HSC5042  Artemisia suksdorfii H. E. Parks May 1940 24178 Humboldt Little River Comment
  SDSU6205  Artemisia suksdorfii D. F. Howe 1963-7-8 3620 Humboldt 2.5 miles west of Bridgeville on #36. 152 Comment
  HSC102553  Asarum caudatum M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-29 1541 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1579 Comment
  HSC58015  Asarum caudatum G. L. Clifton 1979-7-31 11818 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  POM117708  Asarum caudatum Marcus E. Jones 1924-4-26 s.n. Humboldt Scotia Comment
  SEINET8588609  Asarum caudatum J. D. Freeman, R. F. Freeman 1967-5-7 584 Humboldt Moist low bluff just W of Cal. Hwy 36 and just N of Carlotta. Comment
  HSC103116  Asarum hartwegii M. Mesler 2010-9-4 840 Humboldt Along trail E603 (Salmon Summit traihead to Red Cap Lake), about 100 m SE of Baylor Camp. 1677 Comment
  HSC73807  Aspidotis densa M. A. Baker 1980-6-16 1927 Humboldt Near Monks Camp. 1097 Comment
  HSC74315  Aspidotis densa M. A. Baker 1980-7-11 2800 Humboldt Near Red Mtn. 1433 Comment
  HSC44047  Aspidotis densa Thomas W. Nelson, Jane Nelson 1977-7-1 3546 Humboldt On Ridge N of Bear Cr. 100 m W of Rd. 1S07 1555 Comment
  SEINET3868725  Aspidotis densa Thomas Nelson, Jane P. Nelson 1976-7-1 2906 Humboldt North of Bear Creek.; 0 1463 Comment
  CDA18989  Aster brickellioides var. glabratus P. Haggard 2000-8-22 PDR 071957 Humboldt Along USFS Rd 1, southeast of Blue Lake. 0 Comment
  HSC95155  Astragalus agnicidus Gordon Leppig 2003-7-10 2004 Humboldt Pacific Lumber Co. land, common along logging road and landing 700 Comment
  UC1199092  Astragalus pycnostachyus var. pycnostachyus Joseph P. Tracy 1930-7-21 8891 Humboldt 3 mi s of point Cape Mendocino (southwestern slopes, fronting the ocean); Northern Coast Ranges, s Cape Mendocino 3 Comment
  HSC14581  Astragalus rattanii var. rattanii Jana Kattenhorn 1970-10-28 145 Humboldt Mad River at the mouth of Lindsey Creek. North Bank Rd. off Hwy. 299 Comment
  RSA135343  Astragalus rattanii var. rattanii Volney Rattan 1884-1 s.n. Humboldt Big Creek. Comment
  UC397265  Astragalus rattanii var. rattanii P. E. Goddard June, 1907 b. 124 Humboldt Van Duzen Comment
  HSC56967  Asyneuma prenanthoides Overton, Butler 1979-7-23 9491 Humboldt Near Titlow Hill, close to the town of Willow Creek. 1280 Comment
  RSA1509  Athyrium filix-femina subsp. cyclosorum E. R. Johnson 1929-08 1411 Humboldt Arcata Redwood Park 76 Comment
  UC922657  Athyrium filix-femina var. cyclosorum Annie M. Alexander and Louise Kellogg 1948-9-3 5573 Humboldt near Hoopa Reservation (above Trinity River Rd) Comment
  HSC35625  Atriplex leucophylla Thomas W. Nelson, James Nelson 1975-8-5 2138 Humboldt Along S spit of Humboldt Bay ca. 1 mi. N of Table Bluff. Comment
  CAS-BOT-BC146202  Avena barbata Henry M. Pollard 1948-7-26 s.n. Humboldt Near mouth of Camp Creek near Orleans. Comment
  UC181262  Avena barbata Joseph P. Tracy 1913-6-13 4114 Humboldt opposite Buck Mountain; Northern Coast Ranges, valley of Van Duzen River, Dinsmore's 762 Comment
  HSC59241  Avena fatua Terry Roth 1979-5-29 100 Humboldt Arcata, on Alliance Rd. near Westwood Ct. Comment
  HSC9024  Avena fatua W. F. Nickel 1965-5-16 Humboldt N Arcata next to the Humboldt Motor Hotel. Comment
  UC1152028  Avena sativa Joseph P. Tracy 1951-5-26 19511 Humboldt Willow Creek Trinity River Valley 152 Comment
  SEINET10668635  Baccharis Charlene A. Bennett, David B. Dunn; Chester T. Dziekanowski 1976-8-6 Bennett 486 Humboldt Collected by Hwy. 101, N side of Orick. Rocky area, densely forested by river. 30 Comment
  SEINET10474443  Baccharis douglasii Mary Susan Taylor 1977-8-5 Taylor 1428 Humboldt Abundant around bridge over Eel River, at the turnoff from Hwy 1 to Ferndale, in Fernbridge. 2 Comment
  UC604625  Baccharis glutinosa Joseph P. Tracy 1938-8-21 16128 Humboldt Mouth of Little River 9 Comment
  SEINET7003036  Baeria chrysostoma Wanda P. Vestal, A. G. Vestal 1937-6-22 s.n. Humboldt Kneeland prairie, about 4 miles southeast of Kneeland. Comment
  HSC32147  Barbarea orthoceras D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5611 Humboldt Mt. Lassic and two smaller peaks to immediate E 1768 Comment
  UC1198289  Barbarea orthoceras Joseph P. Tracy 1932-7-16 10642 Humboldt along creek in McKay Prairie 1524 Comment
  HSC28223  Barbarea verna Thomas W. Nelson 1973-4-25 798 Humboldt Beside Hwy. 101 at the Bayside turnoff Comment
  UC581761  Bellis perennis Joseph P. Tracy 1937-6-20 15345 Humboldt 10 mi upstream from mouth Bear River 152 Comment
  HSC91368  Bellis perennis Collin Dillingham 1989-2-26 3 Humboldt Arcata; corner of 10th and D streets 0 Comment
  BLMAR689  Berberis aquifolium Jennifer Wheeler 2012-5-9 689 Humboldt Lacks Creek, West side on Barnum 762 Comment
  CAS-BOT-BC75681  Berberis nervosa C. B. Wolf 1931-8-30 2375 Humboldt 11 miles above Blue Lake on the Lord Ellis Road to Willow Creek. 304 Comment
  CAS-BOT-BC75684  Berberis nervosa Henry M. Pollard 1944-9-8 s.n. Humboldt Orleans Mountain Trail. 914 Comment
  HSC38103  Berberis nervosa Thomas W. Nelson, James Nelson 1976-5-30 2624 Humboldt McKeown Ranch, N of Dinsmore. Comment
  HSC57110  Berberis nervosa Overton, Butler 1979-7-25 9851 Humboldt Near Ammon Creek, close to the town of Willow Creek. 671 Comment
  BLMAR651  Berberis pinnata subsp. pinnata Jennifer Wheeler 2012-5-9 651 Humboldt Lacks Creek, Beaver Ridge Road 890 Comment
  HSC984  Blechnum spicant Gene S. Van Horn 1962-1-5 5 Humboldt Arcata, Near mouth of W Creek entering H.S.C. reservoir 61 Comment
  UCSB51219  Blechnum spicant Almanza, Ed 1976-7-15 Humboldt Big Lagoon Cliffs, Big Lagoon. Comment
  POM256476  Boisduvalia densiflora Joseph P. Tracy 1938-7-5 16003 Humboldt Carlotta, open flat by old Strong s District School House, 5 miles east of town. 46 Comment
  RSA465618  Boisduvalia densiflora var. densiflora H. M. Pollard 1948-8-12 s.n. Humboldt Near Orleans. Comment
  CDA5649  Borago officinalis T. C. Fuller 1958-6-17 598 -58 Humboldt Ferndale. 0 Comment
  HSC54891  Botrychium multifidum G. L. Clifton, Griswold 1979-7-25 10930 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1784 Comment
  HSC99840  Boykinia occidentalis C. B. Wolf 1927-8-30 1254 Humboldt 3 mi. S of Thorn along old coast road Comment
  HSC98977  Boykinia occidentalis Cara Witte 2008-7-28 958 Humboldt Grouse Mountain. Forest Service Road 5N04. Near spring. 1641 Comment
  HSC100718  Brassica campestris Carl C. Marshall May 1886 206 Humboldt Fields. Comment
  HSC6580  Brassica rapa J. L. Baker 1965-3-9 5 Humboldt 4 mi. N of Arcata on N Bank Rd. Comment
  CAS-BOT-BC106294  Brickellia californica S. K. Harris; Mrs. C. M. Wilder 1938-9-8 877 Humboldt Bars on Van Duzen River, below Blue Slide Comment
  CAS-BOT-BC145428  Briza maxima Joseph P. Tracy 1930-6-15 8758 Humboldt Alder Point. 152 Comment
  UCD57276  Briza maxima Joseph P. Tracy 1950-5-30 18711 Humboldt Trinity River Valley, at Willow Creek. 152 Comment
  JEPS7733  Brodiaea elegans subsp. elegans Joseph P. Tracy 1926-6-27 7695 Humboldt Horse Mountain Pass on Trinity Highway; Northern Coast Ranges, Horse Mountain, Horse Mountain Pass 883 Comment
  SEINET200767  Brodiaea elegans subsp. elegans Joseph P. Tracy 1936-6-10 14925 Humboldt South Fork of Trinity River mountain slopes west of its mouth 305 Comment
  JEPS5499  Brodiaea stellaris W. I. Follett 1934-5-20 Humboldt 9.6 mi e Bridgeville (beside Fortuna-Red Bluff Hwy (Bridgeville is 23.5 mi w of the Humboldt-Trinity Co. line)) Comment
  RSA249396  Brodiaea stellaris D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-17 5697 Humboldt McKeown Ranch, N of Dinsmore. Comment
  UC37672  Bromus carinatus var. carinatus J. Burtt Davy 1899-7-30 6179 Humboldt opposite Eureka (North Coast Ranges); North Coast Ranges Comment
  SEINET200637 Image available Bromus commutatus Joseph P. Tracy 1917-6-24 4824 Humboldt Holmes Flat 61 Comment
  UC552679  Bromus commutatus Joseph P. Tracy 1935-5-25 13873 Humboldt Fort Seward 106 Comment
  UCD59657  Bromus secalinus var. velutinus G. T. Bateham 1921-8-7 s.n. Humboldt Showers Pass. Comment
  UC204532  Bromus sterilis Joseph P. Tracy 1916-5-31 4698 Humboldt Northern Coast Ranges, along Eel River from South Fork to Scotia, Holmes Flat Holmes Flat; Northern Coast Ranges, Eel River, Holmes Flat 60 Comment
  UC526932  Bromus sterilis Joseph P. Tracy 1933-6-13 12601 Humboldt Bair's Ranch on Redwood Creek Redwood Creek; North Coast Ranges, , Bair's Ranch 914 Comment
  UC1145179  Bromus tectorum Joseph P. Tracy 1939-4-29 16248 Humboldt 8 mi below Orleans (near Slate Creek, Klamath River); Klamath River 121 Comment
  UC526728  Bromus tectorum Joseph P. Tracy 1931-5-3 9349 Humboldt near Blue Lake (along Mad River); Mad River 15 Comment
  HSC48989  Bromus vulgaris M. A. Baker 1979-5-25 760 Humboldt Comment
  UC176583  Bromus vulgaris J. P. Tracy 1900-5-28 807 Humboldt immediate vicinity of Eureka 0 Comment
  UC673074  Cakile edentula Joseph P. Tracy 1940-10-5 16745 Humboldt Mouth of Little River Little River 3 Comment
  BLMAR307  Cakile edentula subsp. californica Jennifer Anthony-Wheeler 2002-6-24 307 Humboldt Manilla Dunes, Manila dunes rec. area 3 Comment
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Apr 14 2014
  SD38262  Cakile edentula var. edentula Edith A. Purer 1932-7-27 4140 Humboldt Samoa Comment
  CHSC10120  Cakile maritima J. W. Johnson 1962-4-29 1299 Humboldt Arcata. W.M. Lanphere Farm, Samoa Peninsula. Comment
  SEINET11993511  Cakile maritima F. H. Utech 1986-1 86 -403 Humboldt Cape Mendocino, along Pacific Ocean 5 Comment
  CAS-BOT-BC185315  Calamagrostis foliosa Roxana S. Ferris 1937-8-21 9391 A Humboldt Shelter Cove. Comment
  CAS-BOT-BC185237  Calamagrostis koelerioides Joseph P. Tracy 1935-7-30 14371 Humboldt Salmon Summit. 2011 Comment
  UCD57250  Calamagrostis koelerioides A. H. Murphy 1948-9-3 s.n. Humboldt southeast of Berry's summit, junction Horse Mtn. road and Horse Mtn. Mine roads. Comment
  BLMAR27  Calamagrostis nutkaensis Brad Barr June, 1982 27 Humboldt King range, on edge of high bench above light house Comment
  JEPS72919  Calamagrostis nutkaensis Lincoln Constance 1934-6-25 923 Humboldt Englewood Bull Creek Region, South Fork Eel River (4 mi n of Dyerville and of n boundary of Humboldt Redwood Park, on Redwood Hwy) Comment
  CHSC106732  Callitriche heterophylla var. bolanderi Robert F. Thorne; P. Everett 1965-8-9 35323 Humboldt Clam Beach County Park: along highway in shallow water of ditch. 3 Comment
  RSA729025  Callitriche heterophylla var. bolanderi R. F. Thorne, P. C. Everett 1965-8-9 35323 Humboldt Clam Beach County Park: along highway. 3 Comment
  HSC62669  Callitriche stagnalis Michelle Stevens 1979-5-18 115 Humboldt By Bayside Grange at 2297 Jacoby Rd., Bayside. 0 Comment
  HSC62828  Callitriche stagnalis J. M. DiTomaso 1979-4-21 888 Humboldt Fresh water creek at Clam Beach, 9 mi. N of Arcata. Comment
  HSC58144  Calocedrus decurrens Gilbert Muth 1979-8-1 12179 Humboldt Near Red Cap Prairie, close to the town of Hoopa 1781 Comment
  HSC100551  Calochortus pulchellus Carl C. Marshall May 1887 479 Humboldt S Humboldt. Comment
  HSC34998  Calochortus tolmiei Thomas W. Nelson 1975-5-24 1879 Humboldt McKeown Ranch, N of Dinsmore. Comment
  HSC99312  Calochortus tolmiei M. A. Baker 1980-6-7 1813 Humboldt Near Brush Mtn. 1128 Comment
  CAS-BOT-BC494358  Calochortus tolmiei Myrtle Paulson 1918-4-28 87538 Humboldt Eureka Comment
  CAS-BOT-BC494365  Calochortus tolmiei H. C. Cantelow 1941-4-26 3949 Humboldt Rd. to Cape Mendocimo 12 mi. S.W. of Ferndale. Comment
  UC1196207  Caltha biflora Joseph P. Tracy 1933-7-16 12779 Humboldt Northern Coast Ranges. At McKay Camp, South Fork Mountain. 1676 Comment
  JEPS39006  Calycadenia truncata J. P. Tracy 1911-7-5 3334 Humboldt Willow Creek Trinity River, Willow Creek 152 Comment
  UC1196474  Calypso bulbosa Joseph P. Tracy 1927-5-15 8062 Humboldt on road to Bair's from Hoopa (at head of Pine Creek, near summit of Hoopa Mountain); Hoopa Mountain, Pine Creek 1066 Comment
  HSC17646  Calyptridium monospermum W. K. Parks Jul 1933 1198 Humboldt S Fork Mtn. Comment
  UC1198376  Calyptridium monospermum Joseph P. Tracy 1933-7-11 12704 Humboldt Grouse Mountain 1524 Comment
  HSC74028  Calystegia occidentalis subsp. occidentalis Gail Newton 1980-7-11 1315 Humboldt Near Red Mtn. 1341 Comment
  UC562488  Calystegia occidentalis subsp. occidentalis Joseph P. Tracy 1933-7-25 12883 Humboldt Grouse Mountain , Grouse Mountain (North Coast Ranges) 1524 Comment
  HSC1977  Calystegia soldanella D. E. Anderson, N. D. Dennis 1965-6-8 103 Humboldt Samoa Peninsula along the W side of Humboldt Bay Comment
  HSC46956  Calystegia soldanella J. P. Smith, Thomas W. Nelson 1977-6-30 9204 Humboldt Samoa Peninsula just E of the drag strip. Comment
  HSC6365  Calystegia soldanella R. E. Hafenfeld 1965-5-9 58 Humboldt Near mouth of Ossagon Cr. on Gold Bluff Beach Comment
  RSA394824  Calystegia soldanella B. C. Templeton 1931-10-15 s.n. Humboldt Eureka Comment
  SD42477  Calystegia soldanella Carl B. Wolf 1937-6-18 8902 Humboldt Centerville Beach. 3 Comment
  CHSC445  Calystegia soldanella M. Underhill 1952-7-13 Humboldt 0 Comment
  UCSB4975  Calystegia soldanella Phillips, Priscilla 1958-6-7 Humboldt Dry Lagoon Park beach, near Trinidad Comment
  CAS-BOT-BC493385  Camassia quamash subsp. linearis Volney Rattan 1878-1-1 s.n. Humboldt unspecified Comment
  HSC16440  Camissonia cheiranthifolia B. Francis 1964-5-19 6 Humboldt 0.5 mi. S of Fairhaven Comment
  CAS-BOT-BC160233  Camissoniopsis cheiranthifolia subsp. cheiranthifolia T. Mosquin; L. Mosquin 1962-7-19 4489 Humboldt 8.8 miles north of Big Lagoon along US highway 101 to Oregon Comment
  SEINET10939001  Campanula prenanthoides Overton 1979-7-24 OVERTON 9585 Humboldt Near Titlow Hill, on the Willow Creek quad., close to the town of Willow Creek 1250 Comment
  POM284844  Campanula prenanthoides Lyman Benson 1928-7-9 380 Humboldt Weott Ranger Station. Seaward N coast. Watershed- South Fork Eel Rivers. 61 Comment
  SEINET10462970  Campanula prenanthoides Sandborg 1968-7-19 SANDBORG 54 Humboldt Bluff Creek near Notice Creek, forest floor near road below Notice Creek bridge. T10N R4E Comment
  SEINET10905930  Campanula prenanthoides Duncan 1920-9-22 Duncan s.n. Humboldt Hoopa Valley Comment
  UC602559  Campanula scouleri Joseph P. Tracy 1926-6-27 7691 Humboldt Horse Mountain 1219 Comment
  BLMAR593  Campanula scouleri Jennifer Wheeler 2010-7-23 593 Humboldt Lacks Creek, along Pine Ridge Road under shady Douglas-fir foreset 975 Comment
  SEINET10463645  Campanula scouleri Ira L. Wiggins 1930-7-22 Wiggins 4699 Humboldt ALONG BANK OF REDWOOD CR. BTWN BLUE L. & WILLOW CR. Comment
  HSC89572  Capsella bursa-pastoris M. Roantree 1985-4-25 9 Humboldt E side of Trinidad Head. Comment
  HSC6624  Capsella bursa-pastoris Paul Shields Jul 1955 Humboldt 2 mi. S of Weott Comment
  JEPS79826  Cardamine angulata Joseph P. Tracy 1928-4-29 8425 Humboldt Prairie Creek Northern Coast Ranges, Prairie Creek 152 Comment
  HSC30110  Cardamine californica J. D. Ackerman, A. M. Montalvo 1974-3-31 168 Humboldt 1.5 mi. E of 3 Corners, on Greenwood Heights Rd. toward Kneeland Comment
  UC725904  Cardamine californica A. A. Heller 1937-6-8 15896 Humboldt 3 mi n Trinidad (Bishop Pine Lodge); , n of Trinidad Comment
  SEINET11196228  Cardamine californica L. E. Detling 1935-4-20 1643 Humboldt Redwood Flat, 1 mile N of Dyerville. Comment
  RSA0034559  Cardamine californica var. integrifolia H. E. Parks, Joseph P. Tracy 1931-3-26 916 Humboldt Lower Van Duzen River. 61 Comment
  RSA10948  Cardamine californica var. sinuata Victor Duran 1933-5-11 3405 Humboldt Van Duzen River, near Bridgeville. Comment
  HSC26791  Cardamine oligosperma Thomas W. Nelson 1971-4-27 426 Humboldt Along Jolly Giant Creek, HSU campus Comment
  CAS-BOT-BC37891  Cardamine oligosperma Doris K. Kildale 1927-3-20 2916 Humboldt Philipsville. Smith Fork of Eel River. Comment
  CAS-BOT-BC38065  Cardamine pachystigma Tom Craig 1941-7-1 s.n. Humboldt Alder Point. Comment
  RSA183498  Cardionema ramosissimum J. R. Woodside 1963-5-11 11 Humboldt 1.25 miles north of Fairhaven. Comment
  UC1409184  Cardionema ramosissimum Robert F. Thorne and P. Everett 1965-8-5 35155 Humboldt Samoa Dunes 3 Comment
  CAS-BOT-BC281808  Carduus tenuiflorus Joseph P. Tracy 1936-6-28 15008 Humboldt Hungry Hollow on Bald Mt 762 Comment
  UC1222466  Carex amplifolia Joseph P. Tracy 1948-9-5 18193 Humboldt less than one mile s Grizzly Camp (head of Little Hors-Linto Creek); Trinity Summit, Little Hors-Linto Creek 1341 Comment
  CAS-BOT-BC18001  Carex aquatilis var. dives Joseph Prince Tracy 1934-7-30 13504 Humboldt Dry Lagoon (along coast in front of South End of Stone Lagoon). 3 Comment
  CHSC43008  Carex aquatilis var. dives L. P. Janeway 1987-7-30 2533 Humboldt At Dry Lagoon. 3 Comment
  HSC76400  Carex aquatilis var. dives L. P. Janeway 1982-8-7 118 Humboldt Dry Lagoon, middle of lagoon 3 Comment
  SEINET2044695 Image available Carex arcta Juha Pykala, D. H. Norris 1987-6-5 1436 Humboldt E of Maple Creek, Lake Prairie. 1052 Comment
  UC1103620  Carex barbarae Joseph P. Tracy 1935-5-19 13808 Humboldt 2 mi N of Myers (South Fork of Eel River) 91 Comment
  CAS-BOT-BC19440  Carex bolanderi Alice Eastwood; John Thomas Howell 1937-6-23 4779 Humboldt Near Dinsmores. Comment
  HSC98962  Carex bolanderi Cara Witte 2008-7-16 913 Humboldt Board Camp Mountain. Forest Service Road 4N38. 1/2 mile south of intersection with National Forest 1. 1409 Comment
  HSC23092  Carex brainerdii D. H. Norris 1971-5-17 19078 Humboldt On trail to King Peak, 1 mi. N of road terminus of Horse Mtn. to King Peak Rd., N of Shelter Cove 1067 Comment
  RSA126089  Carex buxbaumii Joseph P. Tracy 1924-7-13 6724 Humboldt Big Lagoon 6 Comment
  HSC76385  Carex concinnoides L. P. Janeway 1982-6-20 13 Humboldt NE facing slope near ridgetop 1 mi. SE of Horse Mtn. along FS 6N36 1384 Comment
  HSC38078  Carex densa Thomas W. Nelson, James Nelson 1976-5-30 2629 Humboldt McKeown Ranch, N of Dinsmore. Comment
  JEPS80030  Carex densa Joseph P. Tracy 1936-6-17 14953 Humboldt lower foothills of nw slope of Buck Mountain Northern Coast Ranges, Buck Mountain 762 Comment
  UC1103105  Carex deweyana subsp. leptopoda Joseph P. Tracy 1916-5-31 4694 Humboldt Eel River from South Fork to Scotia Northern Coast Ranges (Holmes Flat) 60 Comment
  UC194805  Carex deweyana subsp. leptopoda Joseph P. Tracy 1913-6-22 4267 Humboldt Dinsmore's Ranch in valley of Van Duzen River, opposite Buck Mountain 0 Comment
  SEINET7483969 Image available Carex exsiccata Joseph P. Tracy 1934-1 13502 Humboldt Along coast in front of South End of Stone Lagoon. 3 Comment
  UC2015873  Carex feta Joy Mastrogiuseppe, Tom Nelson 1986-7-22 4347 Humboldt Coast Range, Burr Valley area. 'False Burr Valley' Comment
  UC249750  Carex garberi Joseph P. Tracy 1924-7-13 6721 Humboldt Big Lagoon Northern Coast Region 6 Comment
  UC2020226  Carex gynodynama Joseph P. Tracy 1906-6-24 2508 Humboldt Northern Coast Region, south slope of Humboldt Hill. Comment
  POM160302  Carex hendersonii Joseph P. Tracy 1926-6-13 7598 Humboldt Blue Lake. 152 Comment
  RSA362584  Carex hendersonii Victor Duran 1933-5-12 3412 Humboldt Bull Creek, at South Fork of the Eel River Comment
  CHSC90288  Carex hoodii Thomas W. Nelson; Jane P. Nelson 1987-6-11 8579 B Humboldt North Coast Ranges. At trail head and along trail to Grogans Hole. Comment
  CAS-BOT-BC35564  Carex jonesii Joseph Prince Tracy 1935-7-26 14257 Humboldt Trinity Summit, Meadows at Water Dog Lakes 1828 Comment
  JEPS79847  Carex jonesii Joseph P. Tracy 1932-7-15 10573 Humboldt Trinity Summit, Corral Prairie Corral Prairie; Trinity Summit, Corral Prairie 1584 Comment
  CHSC85984  Carex laeviculmis L. P. Janeway 2003-7-30 7938 Humboldt High North Coast Ranges. Cold Spring; 0.6 km north of the top of Titlow Hill. 1454 Comment
  UC562428  Carex laeviculmis Joseph P. Tracy Jul 16 1930-Jul 19 1930 8995 Humboldt McKay Camp Northern Coast Ranges, South Fork Mountain 1676 Comment
  HSC103142  Carex lenticularis var. lipocarpa M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-3 1068 Humboldt Patterson Meadows 1555 Comment
  HSC48394  Carex leptopoda Brad Klipfel 1973-6-10 150 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  SEINET7565140 Image available Carex leptopoda L. P. Janeway 2003-7-27 7929 Humboldt North Coast. On ridge between Stone Lagoon, Dry Lagoon and the beach (Sharp Point). Rodgers Peak 7.5' quad. 823 Comment
  UC1103589  Carex luzulina var. ablata Joseph P. Tracy 1936-6-28 15026 Humboldt bog at Lake Prairie Bald Mountain 1066 Comment
  JEPS26004  Carex lyngbyei Joseph P. Tracy 1938-7-15 16069 Humboldt Mouth of Eel River 3 Comment
  CHSC84738  Carex microptera L. P. Janeway 2003-7-26 7920 Humboldt High North Coast Ranges. South side (above) Road 5N04, 0.5 km northeast of the top of Grouse Mountain. 1554 Comment
  HSC102161  Carex microptera M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-3 1071 Humboldt Patterson Meadows 1555 Comment
  HSC70323  Carex multicaulis M. A. Baker 1980-6-7 1875 Humboldt Near Ammon Creek 732 Comment
  HSC71111  Carex multicaulis M. A. Baker 1980-5-23 1387 Humboldt Near Buck Mtn. 343 Comment
  UC1152054  Carex multicaulis Joseph P. Tracy 1949-8-11 18465 Humboldt e of headwaters Redwood Creek (beginning where the electric power line crosses, going southward); Kinsey Ridge 1280 Comment
  UC562265  Carex neurophora Joseph P. Tracy 1935-7-23 14143 Humboldt Trinity Summit, Corral Prairie Corral Prairie; Trinity Summit, Corral Prairie 1584 Comment
  CHSC106515  Carex nudata Peter F. Zika 2009-6-15 24490 Humboldt Outer North Coast Range (NCoRO). S bank of Mad River, near Hatchery Road, S of town of Blue Lake. 20 Comment
  CAS-BOT-BC119543  Carex nudata L. P. Janeway 1983-7-23 436 Humboldt Willow Creek quad. Along the W edge of Trinity River near the Willow Creek Airstrip. 137 Comment
  SEINET10711630  Carex nudata A. Arthur Heller 1923-7-10 Heller 13795 Humboldt Wet soil along the Eel River between Scotia and Pepperwood in the redwood belt. Comment
  CHSC69505  Carex obnupta Vernon H. Oswald; Lowell Ahart 1997-9-4 8856 Humboldt Samoa Dunes Recreation Area at the south end of the North Spit separating Humboldt Bay from the ocean. 0 Comment
  HSC76818  Carex obnupta L. P. Janeway 1982-6-12 3 Humboldt Dry Lagoon 3 Comment
  HSC59577  Carex obnupta Rick Lundquist 1979-5-18 112 Humboldt Clam Beach Ponds 0 Comment
  CAS-BOT-BC119264  Carex ovalis Joseph Prince Tracy 1939-7-9 16315 Humboldt Bald Mt. Abundant in ditch 1 mi N of Murphy Meadows. 914 Comment
  SEINET10883545  Carex pachystachya Joseph P. Tracy 1935-6-8 Tracy 13938 Humboldt Eureka. Damp place in open ground. Comment
  SEINET3827283  Carex pachystachya Joseph P. Tracy 1938-1 16083 Humboldt In shade. 30 Comment
  CAS-BOT-BC119165  Carex pansa David Daniels Keck 1938-8-5 4766 Humboldt Calm Beach in dunes. Comment
  CAS-BOT-BC119169  Carex pansa Joseph Prince Tracy 1911-6-25 3258 Humboldt Eureka, bayshore. Comment
  UC562632  Carex praticola Joseph P. Tracy 1936-5-29 14826 Humboldt on ridge e Orick; Gans Prairie 548 Comment
  CAS-BOT-BC118010  Carex rossii Joseph Prince Tracy 1935-6-23 13976 Humboldt French Camp Ridge. 1066 Comment
  HSC78036  Carex rostrata Gail Newton 1980-8-10 2050 Humboldt Near Blake Mtn. 1707 Comment
  JEPS25961  Carex subbracteata Joseph P. Tracy 1918-7-5 5017 Humboldt White Thorn Valley Northern Coast Ranges, White Thorn Valley 304 Comment
  UC1103099  Carex subfusca Joseph P. Tracy 1938-7-7 16030 Humboldt Horse Mountain Northern Coast Ranges 1463 Comment
  UC562636  Carex subfusca Joseph P. Tracy 1936-6-5 14858 Humboldt 6 mi se Arcata (Fickle Hill) 579 Comment
  CAS-BOT-BC116683  Carex subfusca Joseph Prince Tracy 1928-6-17 8450 Humboldt Trinity River Valley, at Willow Creek. 152 Comment
  CAS-BOT-BC115573  Carex tumulicola Joseph Prince Tracy 1935-6-16 11270 Humboldt Buck Mt. Lower NW slopes on grassy hillside. 792 Comment
  JEPS79866  Carex tumulicola Joseph P. Tracy 1916-6-19 4712 Humboldt Laribee Creek at Bosworth's; Northern Coast Ranges, Laribee Creek 457 Comment
  RSA517340  Carex tumulicola Barbara Ertter, Thomas J. Delendick 1987-5-16 6926 Humboldt Vista Point just W of Berry Summit on Highway 299, ca. 15 air miles E of Arcata. 915 Comment
  UC1103116  Carex tumulicola Joseph P. Tracy 1924-9-14 6876 1/2 Humboldt Butter Valley Northern Caost Ranges 152 Comment
  UC562336  Carex tumulicola Harold E. Parks and Joseph P. Tracy 1935-6-16 11270 Humboldt lower nw slopes Buck Mt. 792 Comment
  CAS-BOT-BC115540  Carex unilateralis Joseph Prince Tracy 1930-6-15 8756 Humboldt Bordering a pond, Dobbyn Creek 152 Comment
  POM126087  Carex utriculata Joseph P. Tracy 1924-7-4 6706 Humboldt Snow Camp. 1372 Comment
  HSC96465  Carex viridula subsp. viridula Gordon Leppig 1997-8-3 639 Humboldt Big Lagoon County Park, Big Lagoon Bog, N edge 3 Comment
  HSC2871  Carpobrotus chilensis D. B. Mitchell 1965-5-21 71 Humboldt 1/2 mi. N of U.S. Coast Guard Station on Samoa Rd. Comment
  HSC2874  Carpobrotus edulis C. B. Wolf 1927-8-29 1212 Humboldt Along the coast just S of Cape Mendocino. Comment
  RSA170321  Carthamus lanatus T. C. Fuller 1962-8-7 9365 Humboldt Luke's Prairie on ridge 1 mile north above Bull Creek, about 2 miles west of Dyerville Comment
  JEPS82  Castilleja affinis subsp. affinis Lincoln Constance 1934-3-29 715 a Humboldt Upper Look Prairie South Fork Eel River, Bull Creek Region 365 Comment
  JEPS21129  Castilleja affinis subsp. litoralis Myrtle Paulson 1918-4-28 Humboldt Eureka Comment
  JEPS25792  Castilleja affinis subsp. litoralis L. R. Heckard 1960-8-23 1210 Humboldt about 0.5 mi s Dry Lagoon State Park (near Orick) 152 Comment
  CDA41234  Castilleja affinis subsp. litoralis L. R. Heckard 1960-8-23 1210 Humboldt About 0.5 mile south of Dry Lagoon State park (near Orick). Comment
  CAS-BOT-BC255522  Castilleja applegatei var. pinetorum Henry M. Pollard 1948-7-31 s.n. Humboldt Orleans Mt. 1371 Comment
  UC673218  Castilleja attenuata Lincoln Constance and Reed C. Rollins 1942-5-12 2891 Humboldt 1 mi s Orleans (Klamath River); Klamath-Siskiyou Region, Klamath River 121 Comment
  SEINET12288574  Castilleja douglasii H. P. Chandler 1901-1 1485 Humboldt North Coast Ranges, Klamath River 427 Comment
  HSC46970  Castilleja exserta subsp. latifolia J. P. Smith, Thomas W. Nelson 1977-6-30 9210 Humboldt Samoa Peninsula just E of the drag strip. Comment
  RSA167244  Castilleja litoralis Joseph P. Tracy 1950-6-8 18749 Humboldt Bear River Ridge, south slope near Capetown. Cape Ridge. One mile east of Cape Mendocino. 152 Comment
  HSC55751  Castilleja miniata G. L. Clifton, Griswold 1979-7-26 10283 Humboldt Near Salmon Mtn., close to the town of Forks of Salmon 1935 Comment
  HSC56159  Castilleja miniata G. L. Clifton, Griswold 1979-8-1 12028 Humboldt Near N Trinity Mtn., close to the town of Hoopa. 1798 Comment
  HSC98020  Castilleja pruinosa Cara Witte 2007-7-11 513 Humboldt National Forest 1. Approximately 1 mile south of intersection with 5N01. Near Spike Buck Mountain. 1591 Comment
  JEPS103928  Castilleja pruinosa T. I. and F. M. Chuang 1991-7-9 7876 Humboldt Horse Mt. Comment
  JEPS88810  Castilleja pruinosa T. I. and F. M. Chuang 1991-7-9 7875 Humboldt 4.3 mi se Route 299 junction with Titlow Hill road (on way to Horse Mt) Comment
  UC1502113  Ceanothus R. Sutherland 1976-2-2 A 1 .2.76 Humboldt saddle just ne Rattlesnake Ridge; Pt. Delgada Quad., just ne of Rattlesnake Ridge 1051 Comment
  UC1502115  Ceanothus R. Sutherland 1976-7-5 1 .5.7 76 Humboldt along King's Crest Trail saddle just ne Rattlesnake Ridge; Pt. Delgada Quad., just ne of Rattlesnake Ridge 1051 Comment
  UC1193335  Ceanothus cordulatus P. Zinke 1950-10-9 77 Humboldt King Peak King Peak Quad. 28D1 1280 Comment
  UC1198032  Ceanothus cordulatus Joseph P. Tracy 1935-7-14 14092 Humboldt near Clear Lake (ridge); Northern Coast Ranges 1524 Comment
  JEPS42412  Ceanothus incanus Lincoln Constance 1934-6-15 884 Humboldt summit of Grasshopper Peak South Fork Eel River Comment
  UC198614  Ceanothus incanus Joseph P. Tracy 1916-6-21 4706 Humboldt Burr Creek Northern Coast Ranges 914 Comment
  UC634809  Ceanothus incanus H. L. Mason 1928-7-14 4901 Humboldt East Fork of Eel River Garberville Comment
  CAS-BOT-BC63680  Ceanothus integerrimus L. B. Kildale 1928-6-3 5094 Humboldt Bug Creek. Comment
  JEPS103741  Ceanothus integerrimus D. Wilken with E. Painter 2003-7-16 16151 Humboldt St Hwy 96 between Muddy and Weitchpec crks, just E of Weitchpec 70 Comment
  JEPS42112  Ceanothus integerrimus Chesnut and Drew 1888-7-9 Humboldt Kneeland Prairie Comment
  UC176965  Ceanothus integerrimus Joseph P. Tracy 1913-6-21 4249 Humboldt Dinsmore's Ranch Valley of Van Duzen River, Northern Coast Ranges (opposite Buck Mt.,) 762 Comment
  HSC97918  Ceanothus integerrimus var. integerrimus Cara Witte 2007-6-14 276 Humboldt Along National Forest 1. Near Kinsey Ridge. 2 miles north of intersection with 4N06. 1319 Comment
  CAS-BOT-BC51144  Ceanothus lemmonii D. Haskamp; E. Sonnenblick; M. Taft 1995-4-23 38 Humboldt On rd. A16 NE of Basin Gulch campground 11 miles. On west side of road 731 Comment
  HSC18380  Ceanothus oliganthus var. sorediatus P. J. Zinke 1950-10-4 166 Humboldt 2 mi E of Honeydew 1829 Comment
  CAS-BOT-BC51218  Ceanothus parryi C. Hart Merriam 1920-8-30 s.n. Humboldt Garberville Comment
  CAS-BOT-BC52984  Ceanothus thyrsiflorus L. R. Abrams; R. Bacigalupi 1922-6-25 8295 Humboldt Bluffs north of Big Lagoon Comment
  HSC23116  Ceanothus thyrsiflorus Norman Dennis 1965-6-19 124 Humboldt 0.25 mi S and 1.0 mi. E of junction of Barry Ridge Rd. and Eureka-Bridgeville county rd., along Ashfield Ridge Rd., 5 mi. SE of Kneeland 793 Comment
  HSC79361  Ceanothus thyrsiflorus Kenneth Clark 1980-6-14 684 Humboldt Above N Fork of Dead Man's Gulch 213 Comment
  JEPS42139  Ceanothus thyrsiflorus W. L. Jepson 1902-6-24 1928 Humboldt near Angel's Ranch (between Korbel and Acorn) 274 Comment
  UC1198000  Ceanothus thyrsiflorus J. P. Tracy 1901-6-23 1166 Humboldt Eureks 0 Comment
  HSC43225  Ceanothus velutinus R. Sutherland 1976-3-17 6 .17376 Humboldt 747 Comment
  POM203232  Ceanothus velutinus M. S. Jussel 1931-5-2 s.n. Humboldt near Garberville Comment
  SD51272  Ceanothus velutinus D. F. Howe 1961-8-2 Humboldt 2.7 miles east of Orick on Bald Mt. road 762 Comment
  SEINET201062  Ceanothus velutinus J. P. Tracy 1935-5-12 13798 Humboldt Trinity River Valley at Willow Creek 152 Comment
  UC668158  Ceanothus velutinus Joseph P. Tracy 1935-5-12 13798 Humboldt Trinity River Valley at Willow Creek; Trinity River Valley, Willow Creek 152 Comment
  CAS-BOT-BC52409  Ceanothus velutinus var. velutinus C. Hart Merriam 1920-8-31 s.n. Humboldt Coast Mts. between Shelter Cove and Kenny Comment
  CAS-BOT-BC277178  Centaurea X pouzinii T. C. Fuller 1961-9-26 7030 Humboldt Horse Prairie, 2 mi. s. of Redcrest Comment
  CAS-BOT-BC281948  Centaurea benedicta Harold E. Parks; Joseph P. Tracy 1942-7-2 11580 Humboldt Dinsmore's, roadside bordering grain field 762 Comment
  CDA36344  Centaurea jacea Domenic Bongio 2011-11-15 PDR# 1414345 Humboldt Trinidad; Hwy 101 at mile-maker 104.05 near Patrick s Point Dr. 0 Comment
  CAS-BOT-BC272098  Centaurea melitensis T. C. Fuller 1961-3-21 5856 Humboldt 1 mi. NE limits Eureka Comment
  CDA7178  Centaurea nigra David Kratville 2007-8-24 PDR# 1440729 Humboldt Holmes; end of Holmes Flat Rd. Comment
  HSC37691  Centaurea solstitialis R. Sutherland 1976-8-18 5 .18876 Humboldt In the town of Briceland 192 Comment
  JEPS46930  Centaurium muehlenbergii Lincoln Constance 1934-6-4 820 Humboldt Bull Creek road to Dyerville (Look Prairie); South Fork Eel River, Bull Creek Region, Look Prairie Comment
  RSA50142  Centaurium muehlenbergii E. K. Balls 1949-7-11 13970 Humboldt Nine miles from Bluff Creek, on Highway 96 on way to Willow Creek. 110 Comment
  UC203958  Centunculus minimus Joseph P. Tracy 1918-7-5 5019 Humboldt Northern Coast Ranges, White Thorn Valley White Thorn Valley; Northern Coast Ranges, White Thorn Valley 304 Comment
  UC179959  Cerastium arvense Joseph P. Tracy 1914-7-5 4565 Humboldt Bald Mt., High Prairie Northern Coast Ranges, Bald Mt., High Prairie 1066 Comment
  UC668109  Cerastium fontanum subsp. vulgare Joseph P. Tracy 1933-5-28 12412 Humboldt Carlotta Northern Coast Ranges, Carlotta 60 Comment
  HSC79373  Cerastium glomeratum Kenneth Clark 1980-3-27 552 Humboldt Above Dead Man's Gulch 183 Comment
  CAS-BOT-BC179477  Cercis occidentalis Carl D. Duncan 1920-9-22 s.n. Humboldt Hoopo Valley Comment
  RSA2940  Cercis occidentalis Carl B. Wolf 1931-8-31 2380 Humboldt West side of South fork of Trinity River, 1 mi. above its mouth. Comment
  CAS-BOT-BC276489  Chaenactis douglasii var. douglasii Joseph P. Tracy 1933-7-25 12877 Humboldt Grouse Mountain 1524 Comment
  SEINET5334897  Chamaecyparis lawsoniana W. D. Billings 1940-6-25 1350 Humboldt Cedar Creek, 35 miles east of Arcata Comment
  UC1198973  Chamaesyce serpyllifolia Joseph P. Tracy 1920-8-15 5382 Humboldt Bluff Creek Northern Coast Ranges, Klamath River 152 Comment
  UC502947  Chamaesyce serpyllifolia Joseph P. Tracy 1930-10-12 9208 Humboldt Eel River Northern Coast Ranges (Alton to Fortuna) 15 Comment
  CAS-BOT-BC166038  Chamerion angustifolium subsp. circumvagum Henry M. Pollard 1946-8-28 s.n. Humboldt Near summit of Orleans Mt. 1828 Comment
  HSC99520  Chamerion angustifolium subsp. circumvagum K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-22 183 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  HSC99459  Cheilanthes gracillima K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-7 113 Humboldt Near North Trinity Mtn, 11. 9 mi east of Hoopa on Big Hill Rd (8N01), at Box Camp, Six Rivers National Forest. 1372 Comment
  CAS-BOT-BC473030  Chenopodium macrospermum var. farinosum Malcom A. Nobs; S. Galen Smith 1949-8-11 1340 Humboldt Marsh at eastern shore of Stone Lagoon Comment
  UC179956  Chenopodium murale Joseph P. Tracy 1914-6-26 4519 Humboldt Eureka Northern Coast Region 0 Comment
  RSA43898  Chimaphila menziesii H. M. Pollard 1948-7-31 s.n. Humboldt Orleans Mt. 1524 Comment
  HSC45428  Chimaphila menziesii Thomas W. Nelson, Jane Nelson 1977-6-19 3501 Humboldt Along ridge N of pond above Alder Springs 1585 Comment
  UC21649  Chimaphila menziesii J. Burtt Davy 1899-6-18 5620 Humboldt Bald Mt. near Korbel; Bald Mt. Comment
  HSC48860  Chimaphila umbellata Brad Klipfel 1973-7-31 251 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC41259  Chimaphila umbellata Brad Klipfel 1974-7-23 451 Humboldt Horse Mtn., N of the towers Comment
  CAS-BOT-BC36482  Chrysolepis chrysophylla Doris K. Kildale 1926-8-20 2570 Humboldt Bald Hills, east end of prairie near Tomlinson's 716 Comment
  CAS-BOT-BC36483  Chrysolepis chrysophylla Doris K. Kildale 1926-11-28 2867 Humboldt Patricks Point. Coast Terrace Comment
  HSC8056  Chrysolepis chrysophylla Hilda W. Grinnell 1932-7-9 5 Humboldt Above Kerlin Creek, S. Fork Mtn. Comment
  RSA46774  Chrysolepis chrysophylla Doris Kildale Gillespie 1937-8-26 15366 Humboldt Christmas Prairie. Comment
  RSA46797  Chrysolepis chrysophylla Doris K. Kildale 1927-2-22 2978 Humboldt Kneeland Prarie. Comment
  UC519308  Chrysolepis chrysophylla var. chrysophylla Joseph P. Tracy 1933-8-6 12933 Humboldt French Camp Ridge; Northern Coast Ranges 1066 Comment
  HSC99470  Circaea alpina subsp. pacifica K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-14 124 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  UC505099  Circaea alpina subsp. pacifica Joseph P. Tracy Jul 16 1930-Jul 19 1930 8927 Humboldt near McKay Camp (S. Fork Mt.); Northern Coast Ranges, S. Fork Mt. 1676 Comment
  HSC57013  Cirsium arvense Overton, Butler 1979-7-24 57013 Humboldt Near Titlow Hill, close to the town of Willow Creek 1250 Comment
  HSC81713  Cirsium brevistylum Thomas W. Nelson, Jane P. Nelson 1980-8-12 6239 Humboldt Logging roads S of Lundbar Hills 61 Comment
  SEINET11860324  Cirsium douglasii var. canescens H. E. Parks, Parks, S. T. 1947-1 24441 Humboldt South Fork Camp, Willow Creek Comment
  SEINET5506147 Image available Cirsium douglasii var. douglasii John Thomas Howell 1937-7-31 13716 Humboldt 5 mi E of Berry Summit Comment
  UC175439  Cirsium occidentale var. candidissimum Joseph P. Tracy 1912-7-26 3854 1/2 Humboldt Kneeland Prairie North Coast Ranges, Kneeland Prairie 762 Comment
  SEINET11836350  Cirsium pastoris J. P. Tracy 1942-1 17302 Humboldt Trinity River Valley, at Willow Creek 152 Comment
  RSA0070881  Cirsium remotifolium A. K. Kellogg, W. G. W. Harford 1868-1 558 Humboldt [Unspecified] Comment
  HSC32535  Cirsium vulgare Thomas W. Nelson 1973-9-3 1127 Humboldt McKeown Ranch N of Dinsmore Comment
  UC1119201  Cirsium vulgare H. L. Person 1931-7-30 Humboldt Fieldbrook Eureka Quadrangle, Fieldbrook Comment
  UCD130811  Cirsium vulgare Linda M. Barker 1976-8-24 1684 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  HSC5378  Cirsium vulgare W. R. Rogers 1965-9-1 253 Humboldt 2 mi. N of Arcatam W side of Hwy. 101 Comment
  HSC89489  Cirsium vulgare P. A. Daly 1986-2-28 65 Humboldt Trinidad Head, along trail 61 Comment
  UC1196991  Clarkia amoena Joseph P. Tracy 1925-5-30 7029 Humboldt Laribee Valley Northern Coast Ranges 701 Comment
  HSC104439  Clarkia amoena Greg O'Connell 2013-6-27 Humboldt Summit of Mt. Andy 1159 Comment
  CAS-BOT-BC160975  Clarkia amoena subsp. amoena Joseph P. Tracy 1909-7-31 3026 Humboldt Kneeland Prairie 762 Comment
  JEPS43549  Clarkia amoena subsp. amoena W. L. Jepson 1902-8-3 2141 Humboldt near Capetwon; Bear River 182 Comment
  HSC16277  Clarkia concinna subsp. concinna J. E. Lankila 1962-5-6 13 Humboldt W bank of Eel River across from Shively, .25 mi. from Bear Creek Comment
  HSC63806  Clarkia concinna subsp. concinna M. A. Baker 1979-5-23 755 Humboldt Along Bair Rd., Hoopa Indian Reservation Comment
  UC183772  Clarkia gracilis subsp. gracilis Joseph P. Tracy 1912-7-31 3907 Humboldt nw slope Buck Mountain; Northern Coast Ranges, Burr Valley 1066 Comment
  CAS-BOT-BC172510  Clarkia purpurea subsp. quadrivulnera Joseph P. Tracy 1932-6-26 10264 Humboldt Valley of South Yager Creek 762 Comment
  UC1196986  Clarkia purpurea subsp. quadrivulnera Joseph P. Tracy 1930-6-15 8745 Humboldt near Bosworth's; Northern Coast Ranges, Larrabee Creek 457 Comment
  UC35399  Clarkia purpurea subsp. quadrivulnera Chesnut and Drew 1888-7-9 Humboldt Kneeland Comment
  UC180230  Clarkia purpurea subsp. quadrivulnera Joseph P. Tracy 1914-7-5 4569 Humboldt High Prairie Northern Coast Ranges, Bald Mountain 1066 Comment
  UC314618  Clarkia purpurea subsp. quadrivulnera Joseph P. Tracy 1923-7-4 6527 Humboldt Valley of South Yager Creek Northern Coast Ranges 762 Comment
  UC20026  Clarkia rhomboidea Harley P. Chandler June, 1901 1339 Humboldt Hupa Indian Reservation North Coast Ranges 152 Comment
  CAS-BOT-BC164823  Clarkia rhomboidea Doris K. Kildale 1928-6-24 5292 Humboldt Horse Mountain road near junction of Willow Creek road 853 Comment
  SEINET196688  Claytonia cordifolia H. E. Parks, JP Tracy 1949-6-25 11680 Humboldt Trinity Summit at Box Camp 1460 Comment
  UC672985  Claytonia exigua subsp. glauca Joseph P. Tracy 1936-4-26 14801 Humboldt Kneeland Prairie 762 Comment
  UC672996  Claytonia parviflora subsp. parviflora Joseph P. Tracy 1937-3-17 15285 Humboldt Willow Creek; Trinity River Valley 152 Comment
  HSC17684  Claytonia perfoliata D. B. Bader 1963-2-17 36 Humboldt Second of the Clam Beach Lagoons W. of Hwy.101 Comment
  HSC40905  Claytonia perfoliata subsp. intermontana J. O. Sawyer 1970-4-24 2191 Humboldt Along FS Rd. 7N04 at Cedar Creek below Groves Prairie Comment
  CAS-BOT-BC439933  Claytonia perfoliata subsp. mexicana Doris K. Kildale 1926-3-21 1583 Humboldt Kneeland Prairie - summit 853 Comment
  UC183594  Claytonia perfoliata subsp. perfoliata Joseph P. Tracy 1913-5-4 4057 Humboldt Kneeland Prairie; Northern Coast Ranges 762 Comment
  HSC24337  Claytonia perfoliata subsp. perfoliata C. E. Fellows 1971-8-16 398 Humboldt Clam Beach, near end of Central Ave. Comment
  UC672999  Claytonia rubra subsp. rubra Joseph P. Tracy 1937-5-17 15286 Humboldt Willow Creek; Trinity River Valley 152 Comment
  CAS-BOT-BC443894  Claytonia sibirica Alice Eastwood; John Thomas Howell 1937-6-23 4783 Humboldt Near Dinsmore's Comment
  UC7932  Claytonia sibirica Harley P. Chandler May 1901 1264 Humboldt Redwood Belt; North Coast Ranges 152 Comment
  HSC69844  Claytonia sibirica R. Kalal 1980-5-5 48 Humboldt Fickel Hill Rd., 1 mi. E of 11th St., Arcata 183 Comment
  RSA554591  Claytonia sibirica Walter Wisura 1993-5-9 4909 Humboldt Northwest: Hwy 299, 5.7 mi. W of Willow Creek at E-fork camp ground. Comment
  UCD100893  Claytonia sibirica D. Sanchez-Mata; S. Rivas-Martinez, M. Costa and M. Ladero 1998-6-10 s.n. Humboldt Trinidad-Klamath Glenn. Prairie Creek State Park. Prairie Creek Trail. 125 Comment
  HSC99239  Claytonia washingtoniana C. E. Fellows 1971-6-7 454 Humboldt 0.35 mi. E of Arlington Rd. on Alder Grove Rd. Comment
  HSC18086  Clematis lasiantha Doris K. Kildale 1925-6-27 771 Humboldt Mouth of Yager Creek Comment
  HSC92099  Clintonia andrewsiana Brad Klipfel 1973-4-28 10 Humboldt Along Canyon Creek, SW of Korbel Comment
  JEPS61597  Clintonia andrewsiana Lincoln Constance 1934-6-3 810 Humboldt 1 mi n of Dyerville (road from High Rock (on Redwood Hwy) to Horse Prairie, South Fork Eel River); Bull Creek Region, South Fork Eel River Comment
  UC1197663  Clintonia andrewsiana Joseph P. Tracy 1901-8-1 1238 Humboldt e of Rohnerville 152 Comment
  UC180199  Clintonia andrewsiana Joseph P. Tracy 1914-5-17 4473 Humboldt between Ryans Slough and Freshwater Creek (about Humboldt Bay, at the Cumens Claim); Northern Coast Region, Humboldt Bay 304 Comment
  UC198607  Collinsia grandiflora Joseph P. Tracy 1913-1 4777 Humboldt at Dinsmore's (in Van Duzen Valley); North Coast Ranges 762 Comment
  UC41804  Collinsia grandiflora W. C. Blasdale 1896-6-8 Humboldt Graham's Comment
  HSC73177  Collinsia linearis M. A. Baker 1980-5-18 1335 Humboldt Near Black Mtn. 792 Comment
  HSC73584  Collinsia linearis Gail Newton 1980-7-14 1492 Humboldt Near Last Chance Ridge. 1219 Comment
  RSA21322  Collinsia linearis Carl B. Wolf 1937-8-13 9216 Humboldt North coast range, 8 mi. east of Hoopa Valley on new road towards Trinity summit. 1220 Comment
  HSC58045  Collinsia rattanii Gilbert Muth 1979-8-1 11904 Humboldt Near Mill Creek Lakes, close to Hoopa 1692 Comment
  UC1196851  Collinsia sparsiflora var. collina Joseph P. Tracy 1913-6-20 4242 Humboldt Grassy slopes on lower foothills of Buck Mountain. 762 Comment
  UC427878  Collinsia sparsiflora var. sparsiflora H. E. Parks and J. P. Tracy 1930-5-25 792 Humboldt Larabee Valley 792 Comment
  HSC63485  Collomia grandiflora M. A. Baker 1977-6-20 388 Humboldt Weitchpec Comment
  HSC98863  Collomia grandiflora Cara Witte 2008-8-5 985 Humboldt Buck Flat. Intersection of National Forest 1 and Forest Service Road 5N01. 1569 Comment
  UC615026  Collomia grandiflora Beryl O. Schreiber 1934-6-6 1143 Humboldt Gray's Resort Redwood Creek (brushy slope) Comment
  HSC16927  Collomia heterophylla D. E. Anderson 1965-5-8 3639 Humboldt About 2 mi. N of Willow Creek on the road running along E side of Trinity River Comment
  UC133646  Collomia heterophylla Joseph P. Tracy 1909-7-31 3044 Humboldt in woods on hillside Northern Coast Ranges, Kneeland Prairie 762 Comment
  HSC40675  Collomia tinctoria Thomas W. Nelson, Jane P. Nelson 1976-7-1 2924 Humboldt Along N side of Mt. Lassic (Signal Peak) 1738 Comment
  HSC73732  Collomia tracyi M. A. Baker 1980-7-19 3001 Humboldt Near Bret Hole. 1814 Comment
  HSC8636  Conium maculatum J. R. Lippincott 1967-7-16 12 Humboldt 1 mi S of Blue Lake on West End Rd. Comment
  HSC36436  Conium maculatum John Rehlingl 1974-6-27 Humboldt Along Alliance Rd. Comment
  JEPS23516  Coptis laciniata Joseph P. Tracy 1941-4-8 16856 Humboldt Willow Creek Canyon; along Trinity Hwy 762 Comment
  HSC45237  Corallorhiza maculata Thomas W. Nelson, Jane P. Nelson 1977-6-19 3516 Humboldt Trail above Alder Springs 1585 Comment
  HSC99481  Corallorhiza maculata var. flavida K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-14 140 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), between Six Rivers National Forest boundary and Box Camp. 1433 Comment
  UC1046561  Corallorhiza mertensiana R. Bacigalupi, L. Constance, J. P. Tracy, R. Moran, R. L. Rodriguez, and S. Carlquist 1951-6-14 3420 Humboldt 4700 ft ridge between Mad River and; Bald Mountain, Snow CamRedwood Creek Comment
  UC1196459  Corallorhiza mertensiana Joseph P. Tracy 1908-6 2724 Humboldt Buck Mt. Northern Coast Ranges (nw slope, foot) 304 Comment
  UC275531  Corallorhiza mertensiana Joseph P. Tracy 1923-6-22 6347 Humboldt Bald Mt. Northern Coast Ranges 914 Comment
  POM312521  Cordylanthus maritimus subsp. palustris Malcolm A. Nobs, S. Galen Smith 1949-8-3 1200 Humboldt 2 miles north of Eureka, bordering Humboldt Bay. Comment
  RSA244999  Cordylanthus maritimus subsp. palustris William J. Ferlatte, B. D. Rogers 1966-8-15 3125 Humboldt 6 miles east of Korbel; Cutoff Red wood Comment
  UC1222818  Cordylanthus maritimus subsp. palustris Joseph P. Tracy 1950-6-17 18839 a Humboldt slough at railroad bridge (salt marsh); Eureka Comment
  HSC96799  Cordyline australis Gordon Leppig 2004-5-11 2153 Humboldt Eureka, Cooper Slough S of Myrtle Avenue 2 Comment
  HSC49140  Corethrogyne filaginifolia J. O. Sawyer, R. J. Cole 1978-10-10 3318 Humboldt W of Coast Guard road at intersection with Samoa Bridge Comment
  UC1223039  Corethrogyne filaginifolia Joseph P. Tracy 1947-6-8 17705 Humboldt 5 mi e of town old Strong's District School House; Carlotta 60 Comment
  RSA125370  Corethrogyne filaginifolia var. californica Peter H. Raven, R. Snow 1958-7-21 13658 Humboldt 2 miles north of Cape Mendocino Comment
  HSC57031  Cornus nuttallii Overton, Butler 1979-7-24 9656 Humboldt Near Friday Camp, close to the town of Willow Creek. 1250 Comment
  HSC70920  Cornus nuttallii R. York 1980-5-18 562 Humboldt Near Black Mtn. 1006 Comment
  HSC97551  Cornus nuttallii Cara Witte 2007-5-31 159 Humboldt National Forest Road 1. 1 mile south of intersection with 5N04. 1551 Comment
  UCD117252  Cornus nuttallii Joseph P. Tracy 1950-10-7 19384 Humboldt Trinity River Valley, at Willow Creek. 152 Comment
  CAS-BOT-BC212181  Cornus sericea Joseph P. Tracy 1929-8-18 8653 Humboldt Dinsmore's Ranch on Van Duzen River opposite Buck Mountain 670 Comment
  RSA152313  Corylus cornuta var. californica Joseph P. Tracy 1946-8-25 17639 Humboldt Table Bluff, along Hookton road. 9 Comment
  RSA125671  Crataegus suksdorfii E. K. Balls 1957-5-25 22602 Humboldt Hwy 36, Van Duzen River, W of Trinity Humboldt County Line. 732 Comment
  JEPS89545  Crepis capillaris Dean W. Taylor 1991-9-15 12288 Humboldt along Hwy. 101 near mouth of Tom Creek (Big Lagoon); N. Coast Ranges, Big Lagoon 3 Comment
  UCSB30599  Crepis capillaris Edwards, David 1974-7-13 Humboldt SW. of intersection of Fickle Hill Rd. and Hill St., ca. 1/3 mi. E. of U.S. 101, Arcata 36 Comment
  HSC96260  Crepis pleurocarpa Laurel Goldsmith, Wanda Naylor 2005-6-15 10 Humboldt 1 mi. SE of Grouse Mtn. on unnamed F.S. road 1400 Comment
  RSA43684  Crepis setosa H. M. Pollard 1948-8-8 s.n. Humboldt Roadside between Orleans and Camp Creek Comment
  UC1199229  Crocidium multicaule Joseph P. Tracy 1930-5-4 8690 Humboldt Larrabee Valley 701 Comment
  HSC58122  Cryptantha affinis G. L. Clifton, Griswold 1979-8-1 12093 Humboldt Near N Trinity Mtn., close to the town of Hoopa 1799 Comment
  HSC99568  Cryptantha affinis K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-8-10 233 Humboldt Near North Trinity Mtn, 11. 9 mi east of Hoopa on Big Hill Rd (8N01), at Box Camp, Six Rivers National Forest. 1372 Comment
  UC55910  Cryptantha flaccida J. P. Tracy 1903-5-22 1880 Humboldt Alder Point Bridge Eel River 152 Comment
  UC175774  Cryptantha intermedia Mrs. M. H. Manning 1900-1 Humboldt Hupa Valley Comment
  HSC3608  Cryptantha intermedia var. hendersonii H. E. Parks, J. P. Tracy 1934-6-14 11021 Humboldt Horse Mtn. near Arford cabin 1220 Comment
  BLMAR607  Cryptantha leiocarpa Jennifer Wheeler 2011-4-1 607 Humboldt King range, growing throughout the Mattole Beach duns 0 Comment
  UC164379  Cryptantha torreyana Harley P. Chandler Jun 1901 1541 Humboldt Klamath River North Coast Ranges 304 Comment
  UC1222267  Cryptantha torreyana Joseph P. Tracy 1949-8-11 18484 Humboldt 3 mi se Snow Camp; Twin Lakes 1463 Comment
  HSC82604  Cryptogramma acrostichoides Thomas W. Nelson 1979-7-11 4990 Humboldt N Trinity Mtn. and ridge to E. 1829 Comment
  UC71489  Cryptogramma acrostichoides Joseph Burtt Davy and W. C. Blasdale 1899-6-21 5844 Humboldt Trinity Summit Comment
  UC162944  Cupressus lawsoniana Joseph P. Tracy 1911-7-6 3341 Humboldt mountain slopes along road between Three Creeks and Mouth of Willow Creek; Northern Coast Ranges 762 Comment
  HSC6387  Cuscuta arvensis J. P. Tracy 1933-8-25 12996 Humboldt Centerville Beach, near mouth of Eel R. 6 Comment
  UC562675  Cuscuta occidentalis Joseph P. Tracy 1930-8-17 9160 Humboldt Big Lagoon 3 Comment
  UC198629  Cuscuta occidentalis Joseph P. Tracy 1916-9-6 4760 Humboldt headwaters of Canoe Creek Northern Coast Ranges, Grasshopper Ridge, Canoe Creek 609 Comment
  HSC62883  Cuscuta salina J. M. DiTomaso 1979-5-20 1065 Humboldt Eureka Bay 3 mi. SW of Arcata on Samoa Rd. Comment
  SEINET3480723  Cuscuta salina C. C. Harris, S. K. Harris 1941-7-28 1894 Humboldt Humboldt Bay near Table Bluff, Humboldt Bay near Table Bluff, Parasitic on Salicornia ambigua Comment
  HSC20640  Cymbalaria muralis A. D. Sajecki 1967-7-24 15 Humboldt Behind H.S.C. Campus Comment
  HSC100845  Cynodon dactylon J. P. Smith, J. O. Sawyer 2009-10-4 12687 Humboldt Edge of parking lot at Ma-Le'l Dunes BLM Co-op Management Area 7 Comment
  SEINET201035  Cynodon dactylon var. dactylon Joseph P. Tracy 1940-10-17 16763 Humboldt South Fork Station 61 Comment
  HSC97640  Cynoglossum grande C. Witte 2007-5-8 9 Humboldt Cold Spring. 1/2 mile south of Titlow Hill. 1397 Comment
  UC175683  Cynoglossum occidentale Joseph P. Tracy 1911-7-7 3424 Humboldt near summit Brannan Mt. (ridge n. of Willow Creek, between Willow and Campbell Creeks); Northern Coast Ranges, Brannan Mt. 1219 Comment
  HSC45219  Cynosurus echinatus M. Alcasas 1978-6-3 126 Humboldt Titlow Hill Rd., 0.3 mi. from Hwy. 299 869 Comment
  HSC9521  Cynosurus echinatus Paul Shields Jun 1955 Humboldt 6 mi. W of Myers Flat Comment
  HSC97544  Cyperus eragrostis Ivy Watson 2008-10-5 40 Humboldt Blue Lake; ~ 500 ft. upstream of the Hatchery Rd. bridge, north bank. 22 Comment
  JEPS79881  Cyperus squarrosus Joseph P. Tracy 1931-9-7 9662 Humboldt Trinity River Valley at Willow Creek Willow Creek; Trinity River Valley, Willow Creek 152 Comment
  UC201998  Cypripedium montanum Joseph P. Tracy 1918-5-26 4937 Humboldt Redwood Creek Northern Coast Ranges, Grouse Mt. (at foot of mountain) 609 Comment
  HSC32333  Cystopteris fragilis D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5635 Humboldt Senteney Rock, a large barren Franciscan Rock along Swayback Ridge Comment
  HSC54855  Cystopteris fragilis G. L. Clifton, Griswold 1979-7-25 10750 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1814 Comment
  UC440178  Cystopteris fragilis Joseph P. Tracy 1920-5-18 5317 Humboldt along Eel River from S Fork to Scotia (Bull Creek); Northern Coast Ranges 60 Comment
  HSC14674  Cytisus scoparius W. R. Brigham 1962-5-20 20 Humboldt End of old Hwy. 101, N of Big Lagoon Rd. Comment
  HSC54578  Dactylis glomerata Overton, Butler 1979-7-24 9616 Humboldt Near Titlow Hill, close to the town of Willow Creek 1250 Comment
  HSC89495  Dactylis glomerata P. A. Daly 1986-2-23 54 Humboldt Trinidad Head 61 Comment
  UC1541567  Dactylis glomerata Harold E. Parks May 1933 4307 Humboldt Spruce Cove Trinidad; Spruce Cove Comment
  HSC58114  Danthonia californica G. L. Clifton, Griswold 1979-8-1 12073 Humboldt Near N Trinity Mtn., close to the town of Hoopa 1799 Comment
  SEINET3128860  Danthonia californica J. B. Davy 1899-5-25 5056 Humboldt Ukiah Comment
Read comments
Dec 29 2015
  UC1152022  Danthonia californica Joseph P. Tracy 1951-6-26 19572 Humboldt Snow Camp and Twin Lakes vicinity Comment
  UC552803  Danthonia intermedia Joseph P. Tracy 1935-7-25 14231 Humboldt McKay Prairie Trinity Summit 1584 Comment
  SEINET6421143 Image available Datisca glomerata Joseph P. Tracy 1932-1 10805 Humboldt Blue Slide, on Van Duzen River 91 Comment
  CDA30706  Daucus carota M. K. Beyers, I. Shepardson 2009-9-13 251 Humboldt Off the eastern side of State Route 254 (Avenue of the Giants), along the Eel river, on and along a steep-cut bank that has been cemented over here, probably to prevent erosion. 0 Comment
  UC1197346  Daucus pusillus Joseph P. Tracy 1927-6-26 8211 Humboldt Stone Lagoon sand beach 6 Comment
  UC154246  Daucus pusillus Joseph P. Tracy 1909-8-1 3057 Humboldt Kneeland Prairie Northern Coast Ranges, Kneeland Prairie 762 Comment
  CDA38308  Daucus pusillus T. C. Fuller 1958-6-17 1904 Humboldt Zanone Ranch, Cape Mendocino. 0 Comment
  UC1196324  Delphinium andersonii Joseph P. Tracy 1935-7-24 14190 Humboldt rocky exposed places near Ranger Station; Trinity Summit 1828 Comment
  CAS-BOT-BC9227  Delphinium decorum H. E. Parks; Joseph Prince Tracy 1927-4-23 7909 Humboldt Vicinity of Trinidad 60 Comment
  HSC102079  Delphinium decorum subsp. tracyi M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 981 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  CAS-BOT-BC9026  Delphinium decorum subsp. tracyi John Rehling 1975-5-12 71 Humboldt Bald Hills, 2 miles up Williams Ridge Road. Comment
  CAS-BOT-BC9030  Delphinium decorum subsp. tracyi Doris K. Kildale 1929-4-28 7464 Humboldt Between Little Van Duzen River and Dinsmores on Eureka-Red Bluff Road Comment
  CAS-BOT-BC9031  Delphinium decorum subsp. tracyi Doris K. Kildale 1926-4-18 1773 Humboldt McCelellan Mountain 822 Comment
  UC249648  Delphinium decorum subsp. tracyi Joseph P. Tracy 1922-6-5 6082 Humboldt slopes at head of creek Northern Coast Ranges, South Yager Creek 762 Comment
  HSC56226  Delphinium glaucum G. L. Clifton, Griswold 1979-8-2 12268 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  JEPS23382  Delphinium hesperium subsp. hesperium Milo S. Baker 1923-7-20 31 Humboldt head of Yager Creek Comment
  UC9180  Delphinium hesperium subsp. pallescens Harley P. Chandler June 1901 1410 Humboldt Klamath River North Coast Ranges 304 Comment
  UC1222579  Delphinium hesperium subsp. pallescens Joseph P. Tracy 1950-6-23 18875 Humboldt hillside along creek 3 mi n Blocksburg; Larrabee Creek Comment
  HSC36195  Delphinium menziesii John Rehling 1975-5-15 83 Humboldt 8 mi. W of Ferndale on the Mattole Rd. Comment
  HSC25012  Delphinium nudicaule Eugene Andreuccetti 1964-5-2 38 Humboldt 50 yds. from Ruby Creek on Hwy. 299 Comment
  HSC95728  Delphinium nudicaule Steven Lee 2004-4-26 30 Humboldt Horse Mtn., 4 mi. up Titlow Hill Rd. from Hwy. 299 Comment
  UC503046  Delphinium nudicaule Joseph P. Tracy 1927-5-30 8084 Humboldt near Briceland; Northern Coast Ranges 243 Comment
  CAS-BOT-BC121974  Delphinium trolliifolium Alice Eastwood; John Thomas Howell 1937-6-23 4770 Humboldt Near Dinsmore's Comment
  CAS-BOT-BC121976  Delphinium trolliifolium Mrs. G Earle Kelly 1924-6-1 s.n. Humboldt Kneeland Prairie Comment
  JEPS23300  Delphinium trolliifolium Joseph P. Tracy 1927-6-5 8099 Humboldt valley of South Yager Creek Northern Coast Ranges 762 Comment
  RSA68777  Delphinium trolliifolium Joseph P. Tracy 1927-6-5 8099 Humboldt Valley of S Yager Creek Comment
  UC1196335  Delphinium trolliifolium Joseph P. Tracy 1946-6-15 17562 Humboldt foothills of Horse Mountain 1066 Comment
  UCD61160  Deschampsia cespitosa Joseph P. Tracy 1942-6-15 17128 Humboldt Englewood, Natural prairie, near Redcrest resort. 91 Comment
  UCD61253  Deschampsia cespitosa Malcolm A. Nobs; S. Galen Smith 1949-8-3 1167 Humboldt 1 mile south of Fields Landing, Eel River Valley. Comment
  UC187264  Deschampsia cespitosa subsp. beringensis Joseph P. Tracy 1904-7-31 2129 Humboldt at Eureka Eureka; Northern Coast Region, Eureka 0 Comment
  CAS-BOT-BC194298  Deschampsia cespitosa subsp. cespitosa David D. Keck 1938-8-5 4773 Humboldt Big Lagoon Comment
  UC1103222  Deschampsia danthonioides Joseph P. Tracy 1932-5-26 10276 Humboldt Fort Baker Ranch North Coast Ranges, Fort Baker Ranch 762 Comment
  UCD62501  Deschampsia danthonioides A. H. Murphy 1951-5-21 47 Humboldt Prior Ranch, 2 miles S of Blocksburg. Comment
  CAS-BOT-BC201778  Deschampsia elongata Doris K. Kildale 1928-7-1 5309 Humboldt French Camp - Bald Hills - Orick - Martin's ferry road Comment
  HSC103072  Deschampsia elongata Sydney Carothers 2014-6-12 13 Humboldt Six Rivers National Forest, Lassics Botanical Area, Red Lassic. Near upper pond and rustic camp site. 1706 Comment
  HSC98123  Deschampsia elongata Cara Witte 2007-6-19 292 Humboldt Horse Mountain Botanical Area. Forest Service Road 6N38. Near Horse Mountain mine. 1289 Comment
  RSA245021  Deschampsia elongata D. E. Anderson 1970-5-21 5081 Humboldt Scotia Bluffs Comment
  UC1103217  Deschampsia elongata J. P. Tracy 1901-4-26 1043 Humboldt 6 mi. s. Eureka (Humboldt Hill); Humboldt Hill 0 Comment
  SEINET3071060 Image available Deschampsia holciformis Joseph P. Tracy 1934-7-20 13465 Humboldt Big Lagoon Comment
  UC1225761  Descurainia incisa subsp. incisa Joseph P. Tracy 1947-8-24 17921 Humboldt near Box Camp (along trail to Water Dog Lakes); Trinity Summit 1676 Comment
  HSC48823  Dicentra uniflora Brad Klipfel, J. O. Sawyer, J. P. Smith 1973-5-27 35 Humboldt Grogan's Hole near N Trinity Mtn. 1829 Comment
  UC526838  Dichanthelium acuminatum subsp. lindheimeri Joseph P. Tracy 1928-9-8 8500 Humboldt Big Lagoon Northern Coast Ranges, Big Lagoon 6 Comment
  RSA10046  Dichanthelium acuminatum var. fasciculatum Joseph P. Tracy 1927-8-7 8313 Humboldt Trinity River Valley, at Willow Creek Comment
  CAS-BOT-BC208956  Dichanthelium oligosanthes subsp. scribnerianum Joseph P. Tracy 1927-8-7 8314 Humboldt Willow Creek, Trinity River Valley 152 Comment
  UC843537  Dichelostemma Elizabeth Parsons Hawver Jun 1915 Humboldt Carlotta Comment
  HSC26454  Dichelostemma capitatum subsp. capitatum Brad Klipfel 1973-4-28 15 Humboldt Along Canyon Creek, SW of Korbel Comment
  HSC86307  Dichelostemma capitatum subsp. capitatum K. Berg, B. Bonning 1983-5-21 493 Humboldt 0.5 mi. up Titlow Hill Rd. from Berry Summit 854 Comment
  UC1950087  Dichelostemma capitatum subsp. capitatum Barbara Ertter with Thomas J. Delendick 1987-5-16 6927 Humboldt near seepage on N side of road; S-facing slope; Vista Point just W of Berry Summit on Hwy 299, ca 15 airmiles E of Arcata Comment
  SEINET6879154  Dichelostemma congestum Wanda P. Vestal, A. G. Vestal 1937-6-23 s.n. Humboldt Saddle near east end of Bald Hills, southeast of Orick. Comment
  HSC70688  Dichelostemma ida-maia Gail Newton 1980-7-15 1571 Humboldt Near Sims Mtn. 1311 Comment
  RSA120194  Dichelostemma ida-maia S. S. Tillett 1956-7-6 622 Humboldt 12.5 miles from Orleans, along Bar Shanty Road. 1174 Comment
  SEINET200696  Dichelostemma ida-maia J. P. Tracy 1901-6-23 1184 Humboldt Immediate vicinity of Eureka near Ryans Slough Hill 0 Comment
  SEINET200655 Image available Digitaria ischaemum Joseph P. Tracy 1950-9-22 19371 Humboldt Klamath River near slate Creek below Orleans 8 miles. Roadside. 122 Comment
  CAS-BOT-BC153239  Diplacus kelloggii Doris K. Kildale 1927-5-20 3228 Humboldt Bug Creek 792 Comment
  CAS-BOT-BC153235  Diplacus kelloggii Duart V. Brown 1947-4-2 33 Humboldt Near Sweed Creek, Trinity River Comment
  JEPS61828  Disporum smithii Lincoln Constance 1934-5-31 753 Humboldt South Fork Eel River, along n side of Bull Creek, from w boundary of Park to Grasshopper Peak (Squaw Creek) Road, Bull Creek; Bull Creek Region, South Fork Eel River, Bull Creek Comment
  CAS-BOT-BC208657  Distichlis spicata L. R. Abrams 1922-6-25 8250 Humboldt Humboldt Bay east of Arcata Comment
  UC526904  Distichlis spicata Joseph P. Tracy 1933-8-22 12989 Humboldt Mouth of Eel River 3 Comment
  UC573991  Distichlis spicata H. S. Yates 1936-6-23 5859 Humboldt 1 mile W. of Bayside Comment
  UCD64191  Distichlis spicata G. Douglas Barbe; T. C. Fuller 1974-6-17 1835 Humboldt Lower Pacific Drive, S of sewage plant, W of golf course, at Sail Court, Shelter Cove. 60 Comment
  BLMAR622  Dodecatheon hendersonii Jennifer Wheeler 2011-6-1 622 Humboldt Lacks Creek, Pine Ridge Rd, entry to firewood cutting area 975 Comment
  HSC97948  Downingia elegans Cara Witte 2007-7-2 396 Humboldt Mud Lake. Off National Forest 1, near Buck Flat. 1569 Comment
  RSA654125  Downingia yina Beecher Crampton 1956-6-26 3651 Humboldt Margin of Snow's Lake, 3.5 miles east of Seigler Springs Comment
  UC552294  Draba verna Joseph P. Tracy 1934-3-11 13147 Humboldt gravel bar of Klamath River North Coast Ranges, Klamath River, Weitchpec 91 Comment
  CAS-BOT-BC159610  Drymocallis glandulosa var. glandulosa Henry M. Pollard 1943-8-1 s.n. Humboldt Orleans Mt. 1828 Comment
  UC12540  Drymocallis glandulosa var. wrangelliana C. C. Marshall 1888-1 Humboldt Comment
  JEPS35195  Dryopteris arguta Lincoln Constance 1934-6-4 825 Humboldt S. Fork Eel River Comment
  UC62809  Dryopteris expansa Marshall A. Howe 1896-5-30 Humboldt Eureka Comment
  UC1145168  Echinochloa crus-galli Joseph P. Tracy 1938-8-14 16115 Humboldt Trinity River Valley near the South Fork 182 Comment
Read comments
Jul 18 2012
  POM273092  Eleocharis obtusa Henry M. Pollard 1946-8-22 s.n. Humboldt Ullathorne Riffle, Klamath River, Orleans Region Comment
  CHSC96433  Eleocharis pachycarpa Gordon Leppig 1998-7-19 979 Humboldt Big Lagoon County Park, Big Lagoon Bog. UTM Zone 10 NAD 1927, 405321E, 4557202N. 3 Comment
  UC666880  Eleocharis pachycarpa H. E. Parks and Joseph P. Tracy 1931-6-7 9569 Humboldt Trinidad 60 Comment
  RSA53824  Eleocharis palustris Henry M. Pollard 1946-8-22 s.n. Humboldt Ullathorne Riffle, Klamath River, Orleans Region Comment
  HSC9695  Elymus condensatus J. Wendell Howe 1253 Humboldt Little River Beach Comment
  UC526783  Elymus elymoides subsp. elymoides Joseph P. Tracy 1933-7-25 12889 Humboldt Grouse Mountain North Coast Ranges 1524 Comment
  HSC40317  Elymus glaucus Thomas W. Nelson, Jane P. Nelson 1976-7-1 2912 Humboldt Along NW side of Lassic Peak (Signal Peak). 1738 Comment
  HSC71647  Elymus glaucus J. P. Smith, J. O. Sawyer, Jane Cole 1978-5-21 9927 Humboldt Ishi Pishi Rd., 2.5 mi. from its junction with Hwy. 96 in Orleans 213 Comment
  HSC76198  Elymus glaucus Overton, Butler 1979-8-2 12509 Humboldt Near Bret Hole, close to the town of Hoopa 1554 Comment
  HSC9709  Elymus glaucus True Hoyle 1967-7-24 29567 Humboldt Oscar Stapp Ranch near Showers Creek and Showers Pass 1006 Comment
  UCD61791  Elymus glaucus A. H. Murphy 1951-8-17 91 Humboldt Humboldt-Trinity Co. line: Near Cold Spring Lookout, South Fork Mtn. ca. 15 miles northeast of Bridgeville. 1219 Comment
  RSA10016  Elymus glaucus subsp. virescens Joseph P. Tracy 1927-6-26 8215 Humboldt Stone Lagoon Comment
  SEINET12749296  Elymus glaucus subsp. virescens W. D. Billings 1940-6-22 1344 Humboldt 0.5 mile N of Trinidad. Comment
  UCD62528  Elymus repens R. Tofsrud 1949-7-1 Humboldt Ferndale. Comment
  CAS-BOT-BC204329  Elymus trachycaulus subsp. trachycaulus Joseph P. Tracy 1926-7-5 7736 Humboldt Valley of South Yager Creek 762 Comment
  UC1103292  Elytrigia repens Joseph P. Tracy 1937-7-17 15434 Humboldt Eureka 60 Comment
  UC1103471  Elytrigia repens Joseph P. Tracy 1948-7-24 18077 Humboldt Eureka 30 Comment
  RSA0049661  Enemion stipitatum Dean Wm. Taylor 2011-5-4 21117 Humboldt Vicinity of Dinsmore; Forest Road 1N30 (Bick Mountain Road) about 0.5 miles SE from junciton with Highway 36 734 Comment
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May 17 2019
  SD38379  Epilobium angustifolium Edith A. Purer 1932-7-27 4148 Humboldt Comment
  RSA39090  Epilobium angustifolium var. macrophyllum P. A. Munz 1948-8-15 12361 Humboldt 2 miles west of Hydesville Comment
  RSA668413  Epilobium angustifolium var. macrophyllum Thomas W Stark 1967-7-18 79 Humboldt West side of U.S. Rt. 101, 1 miles south of town of McKinleyville 61 Comment
  UC198622  Epilobium brachycarpum Joseph P. Tracy 1917-9-3 4854 Humboldt Janes Ranch Northern Coast Ranges, Grouse Mt. (lower w slopes of mt.) 914 Comment
  UC314613  Epilobium brachycarpum Joseph P. Tracy 1925-9-20 7273 Humboldt near South Fork; Northern Coast Ranges, Trinity River Valley 182 Comment
  UC668303  Epilobium campestre Joseph P. Tracy 1938-7-5 16004 Humboldt 5 mi e Carlotta; Strong's District School House 45 Comment
  BLMAR386  Epilobium canum subsp. latifolium Jennifer Anthony-Wheeler 2004-9-1 386 Humboldt Horse Mtn, Growing along titlow hill road 18+ miles 1584 Comment
  HSC74754  Epilobium ciliatum subsp. ciliatum Gail Newton 1981-8-6 2398 Humboldt Near Humbug Creek 1256 Comment
  UC583053  Epilobium ciliatum subsp. ciliatum P. A. Munz 1936-8-12 14379 Humboldt Willow Creek Comment
  HSC98622  Epilobium ciliatum subsp. glandulosum Cara Witte 2007-7-25 584 Humboldt Forest Service Road 6N08. Friday Ridge Road. 1/4 mile east of intersection with 5N10. 1237 Comment
  UCD20169  Epilobium ciliatum subsp. glandulosum J. M. Tucker 1948-9-3 1858 Humboldt Clear Lake, near junction of Friday Ridge Road and Horse Mountain-Grouce Mountain Road. Comment
  HSC16367  Epilobium ciliatum subsp. watsonii J. P. Tracy 1926-7-25 7756 Humboldt Big Lagoon Comment
  HSC95397  Epilobium ciliatum subsp. watsonii Andrea Pickart 2002-7-9 171 Humboldt Bracut Marsh 0 Comment
  UC505124  Epilobium densiflorum Joseph P. Tracy 1932-10-12 10872 Humboldt Miranda' along watercourse Northern Coast Ranges, South Fork of Eel River 121 Comment
  UC1222846  Epilobium glaberrimum subsp. glaberrimum Joseph P. Tracy 1950-8-7 19272 Humboldt 2 mi e Box Camp (on trail between Box Camp and Croghan Hole); Trinity Summit Comment
  POM89781  Epilobium hallianum Joseph P. Tracy 1919-9-18 5234 Humboldt Trinity Summit. 1829 Comment
  UC505112  Epilobium hallianum Joseph P. Tracy 1931-6-28 9589 Humboldt lower foothills of nw slope Northern Coast Ranges, Buck Mountain 762 Comment
  HSC48028  Epilobium minutum Brad Klipfel 1974-6-25 432 Humboldt Horse Mtn. Comment
  HSC64161  Epilobium minutum J. O. Sawyer, K. A. Sawyer 1979-6-24 3402 Humboldt Slopes alongside Aikens Creek. 366 Comment
  RSA0091002  Epilobium oreganum Dean Wm. Taylor 2006-8-31 19633 Humboldt UNDERWOOD MOUNTAIN: meadowy opening in forest above the Hog Ranch' site on the USGS map. 883 Comment
  CAS-BOT-BC171847  Epilobium septentrionale Carl B. Wolf 1927-8-30 1234 Humboldt 2 mi. so. of Petrolia on Matole River near where road crosses river. Comment
  SEINET200786  Epilobium septentrionale Frank C. Gregory 1921-10-1 Humboldt Along SOuth Fork of Trinity River some 10 mi above the mouth 305 Comment
  UC902175  Epilobium torreyi Joseph P. Tracy 1942-7-18 17280 Humboldt along ditch in field Garberville 152 Comment
  CAS-BOT-BC57105  Equisetum X ferrissii Henry M. Pollard 1946-8-27 s.n. Humboldt South side of Klamath River near Boyce Creek, Orleans region Comment
  HSC98068  Equisetum arvense Cara Witte 2007-7-11 505 Humboldt Grouse Mountain. Forest Service Road 5N04. Near spring. 1583 Comment
  HSC46006  Equisetum hyemale subsp. affine J. P. Smith 1971-10-9 4996 Humboldt Banks and flood plain of the Mad River above the fish hatchery. Comment
  CAS-BOT-BC57162  Equisetum hyemale subsp. affine Joseph P. Tracy 1928-6-17 8456 Humboldt Trinity River Valley, at Willow Creek 152 Comment
  CAS-BOT-BC57163  Equisetum hyemale subsp. affine Duart V. Brown 1947-3-24 3 Humboldt 3 miles south of Willow Creek, Trinity River Comment
  HSC100123  Equisetum laevigatum Thomas W. Nelson, Jane Nelson 1977-5-30 3406 Humboldt Back bay of Mad River at Anderson's Ford 640 Comment
  UC1239792  Equisetum laevigatum H. E. Parks and Joseph P. Tracy 1932-5-11 9966 Humboldt along R.R. Samoa; Northern Coast Ranges 6 Comment
  CAS-BOT-BC57793  Equisetum telmateia Joseph P. Tracy 1937-6-26 15361 Humboldt Trinity River Valley, at Willow Creek. 152 Comment
  CAS-BOT-BC57792  Equisetum telmateia Joseph P. Tracy 1934-6-28 13268 Humboldt By Salmon Creek. 9 Comment
  HSC82219  Equisetum telmateia subsp. braunii Paul Wilson 1986-9-16 1053 Humboldt From jct. of Hwy. 101 at Arcata, 1.5 mi. E on Hwy. 299 to bridge 4-36R crossing the Mad River, then upriver about 100 m 30 Comment
  HSC36259  Equisetum telmateia subsp. braunii John Rehling 1974-8-19 19 Humboldt Along Cranell Rd. next to pasture, Trinidad Comment
  HSC91901  Equisetum telmateia subsp. braunii E. Mackey 1987-2-18 Humboldt Patrick's Point State Park, on trail to Wedding Rock Comment
  RSA239690  Equisetum telmateia var. braunii Larry E. DeBuhr 1973-4-23 986 Humboldt Richardson Grove Redwood State Park. Comment
  UC1103228  Eragrostis cilianensis Joseph P. Tracy 1931-9-7 9654 Humboldt Trinity River Valley at Willow Creek; Northern Coast Ranges, Trinity River Valley at Willow Creek 152 Comment
  CAS-BOT-BC291173  Erechtites glomeratus Marck Menke 1999-5-30 31 Humboldt Patrick's Point State Park, along trail near Abalone Point Comment
  HSC5493  Erechtites glomeratus J. W. Johnson 1962-4-18 1261 Humboldt Arcata; N of the Hunt and Bull Farms, Samoa Peninsula Comment
  CDA42399  Erica lusitanica R. Robison 2014-5-5 s.n. Humboldt Trinidad State Beach, near Ewing Street access, across the street from planted yards. 0 Comment
  UC1223012  Erigeron annuus Joseph P. Tracy 1949-10-9 18585 Humboldt Eureka Eureka (weed in garden) Comment
  RSA168815  Erigeron annuus Joseph P. Tracy 1949-10-9 18585 Humboldt My garden at Eureka Comment
  CAS-BOT-BC296107  Erigeron foliosus var. confinis Carl D. Duncan 1920-9-22 s.n. Humboldt Hoopa Valley Comment
  HSC32218  Erigeron foliosus var. confinis J. O. Sawyer 1970-6-24 2215 Humboldt Big Hill Rd., E of Hoopa 1189 Comment
  RSA168813  Erigeron foliosus var. confinis Joseph P. Tracy 1950-8-8 19291 Humboldt Croghan Hole, on Trinity Summit 1677 Comment
  CAS-BOT-BC308077  Erigeron glaucus Kenneth Clark 1980-5-10 646 Humboldt On coastal bluffs of Point Delgada, Shelter Cove 6 Comment
  CAS-BOT-BC308846  Erigeron glaucus A. A. Heller 1937-6-12 15915 Humboldt Trinidad on the coast near the Whaling Station, foot of the grade leading up to the lighthouse on Trinidad Head Comment
  RSA607404  Erigeron glaucus R. S. Woglum 1938-8-29 2023 Humboldt North Coast: Samoa; Samoa Peninsula separating Humboldt Bay from the Pacific Ocean. . Comment
  POM225418  Erigeron inornatus var. biolettii P. A. Munz 1936-8-9 14331 Humboldt South fork of Eel River, 5 miles north of Humboldt-Mendocino County line Comment
  HSC102241  Erigeron inornatus var. inornatus Sydney Carothers 2011-9-17 Humboldt Bret Hole; 1.1 km SW of Trinity Summit 1579 Comment
  HSC97812  Erigeron maniopotamicus Cara Witte 2007-6-22 339 Humboldt Board Camp Mountain. Road to Tri Board Camp. 1/5 mile after intersection with 4N38. 1486 Comment
  CAS-BOT-BC214576  Erigeron philadelphicus Kenneth Clark 1980-6-14 697 Humboldt Shelter Cove. North fork Dead Man's Gulch 121 Comment
  PASA1734  Erigeron philadelphicus Frank W. Peirson 1923-7-9 Humboldt State Park and Auto Camp on the Eel Riv. Comment
  JEPS41378  Erigeron philadelphicus var. philadelphicus W. L. Jepson 1934-5-7 16688 Humboldt Bull Creek Comment
  HSC100373  Erigeron robustior D. Decker 2010-7-28 Humboldt Dinsmore, off 1N08 on Buck Mtn. 1353 Comment
  HSC13527  Eriodictyon californicum P. J. Zinke 1950-10-9 182 Humboldt E slope of King Peak 1159 Comment
  HSC97398  Eriogonum compositum var. compositum Benjamin Hart, Erin Lonergan 2007-6-11 4 Humboldt 14.1 mi. S of Hwy. 299 on NF1 1524 Comment
  CDA18250  Eriogonum latifolium G. D. Barbe, T. C. Fuller 1974-6-19 1876 Humboldt North Coast Ranges; Mad River mouth, beach S of river, at end of Iversen Lane, Tyee City. 7 Comment
  UCSB1454  Eriogonum latifolium Parks, H. 1941-08 Humboldt Little River Comment
  CAS-BOT-BC259183  Eriogonum latifolium W. R. Dudley 1899-6-1 s.n. Humboldt Peninsula opposite Eureka Comment
  UC54741  Eriogonum nudum var. nudum P. E. Goddard 1901-7-12 75 Humboldt Hupa Comment
  RSA178589  Eriogonum nudum var. nudum Joseph P. Tracy 1950-8-20 19320 Humboldt Along the Klamath River at 'Big Bar', just above Slate Creek 122 Comment
  UC1198147  Eriogonum nudum var. nudum Joseph P. Tracy 1948-8-8 18094 Humboldt near school house; Iaqua 609 Comment
  UC176685  Eriogonum nudum var. oblongifolium Joseph P. Tracy 1912-7-21 3761 Humboldt Alton Norther Coast Ranges, Alton 30 Comment
  CAS-BOT-BC269866  Eriogonum nudum var. pubiflorum Henry M. Pollard 1945-8-26 s.n. Humboldt Between Orleans and Camp Creek, Klamath River Canyon Comment
  UC275279  Eriogonum roseum Joseph P. Tracy 1923-9-10 6547 Humboldt near South Fork Trinity River; Northern Coast Ranges, Trinity River Valley 182 Comment
  UC672893  Eriogonum umbellatum var. argus Joseph P. Tracy 1935-7-28 14329 Humboldt head of Devil's Hole Trinity Summit, Devil's Hole 1828 Comment
  RSA46683  Eriogonum umbellatum var. goodmanii Doris K. Kildale 1937-7-18 15131 Humboldt Horse Mt. Comment
  HSC32550  Eriogonum umbellatum var. nelsoniorum Thomas W. Nelson 1973-7-10 1032 Humboldt Humboldt/Trinity County line, Mt. Lassic (Signal Peak) 1790 Comment
  HSC58062  Eriophorum crinigerum G. L. Clifton, Griswold 1979-8-1 11939 Humboldt Near Mill Creek Lakes, close to the town of Hoopa 1692 Comment
  JEPS34743  Eriophyllum lanatum var. achilleoides Lincoln Constance 1934-5-26 678 Humboldt s end of Dyerville Bridge (South Fork of Eel River); Bull Creek Region, South Fork Eel River 45 Comment
  UC582677  Eriophyllum lanatum var. achilleoides Joseph P. Tracy 1936-6-10 14929 Humboldt mountain slopes w of mouth South Fork Trinity River 457 Comment
  UC129579  Eriophyllum lanatum var. lanceolatum Joseph Burtt Davy and Walter C. Blasdale 1899-6-20 5711 Humboldt Hoopa Valley Comment
  UC90272  Eriophyllum lanatum var. lanceolatum Volney Rattan Jul 1878 Humboldt Comment
  HSC100484  Erodium cicutarium Carl C. Marshall Jun 1887 478 Humboldt Everywhere. Comment
  HSC90471  Erodium cicutarium Jean Hanson 1980-4-12 34 Humboldt Eureka, Indian Island in Humboldt Bay. W end of island. Comment
  CAS-BOT-BC41570  Erysimum capitatum Doris K. Kildale 1926-3-21 1578 Humboldt Knuland Prairie. 853 Comment
  HSC57949  Erysimum capitatum var. capitatum G. L. Clifton, Terry Griswold 1979-7-31 11627 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1719 Comment
  HSC73747  Erysimum capitatum var. capitatum M. A. Baker 1980-7-15 2949 Humboldt Near Whiting Ridge. 1341 Comment
  CAS-BOT-BC54909  Erysimum menziesii G. B. Rossbach 1955-6-10 596 Humboldt Depression in coastal dunes near Humboldt Bay lighthouse between Fairhaven and end of Sandy point off Eureka. Comment
  CAS-BOT-BC54919  Erysimum menziesii Joseph P. Tracy 1904-4-24 2031 Humboldt Ocean Beach at Humboldt Bay. Comment
  HSC50933  Erythronium californicum G. L. Clifton, Overton 1979-6-3 3755 Humboldt Near Pine Mtn., close to the town of Forest Glen 1495 Comment
  SDSU19195  Erythronium californicum Michael G. Simpson, Michael Mesler and Michael Mayer 2008-5-27 3005 Humboldt Six Rivers National Forest. Adjacent to Titlow Hill Road, ca. 4.6 miles south of junction with Hwy 299 (at Berry Summit), southeast of intersection with dirt road to Horse Mtn. Ca. 0.6 mile south of Horse Mtn. Radio Tower. 1437 Comment
  CAS-BOT-BC504306  Erythronium californicum Doris K. Kildale 1926-3-21 s.n. Humboldt Kneeland Prairie 762 Comment
  UC666962  Erythronium grandiflorum Joseph P. Tracy 1930-7-18 9037 Humboldt openings in forest near McKay Camp; South Fork Mountain 1676 Comment
  HSC32248  Erythronium grandiflorum subsp. grandiflorum J. O. Sawyer 1970-6-24 Humboldt W of Mill Creek Lakes. 1677 Comment
  HSC45483  Eschscholzia californica Maralyn O'Meara 1974-7-11 534 Humboldt Kneeland, Barry Ridge Comment
  HSC46009  Eschscholzia californica Catherine Chin 1978-9-8 113 Humboldt Arcata, A and 11th St. Comment
  UC161568  Eschscholzia californica Joseph P. Tracy 1911-5-30 3210 Humboldt bluff near Bucksport; Northern Coast Region, region about Humboldt Bay 0 Comment
  HSC76043  Eucephalus glabratus Overton, Butler 1979-8-2 12568 Humboldt Near Bret Hole, close to the town of Hoopa 1554 Comment
  UC204827  Euchiton gymnocephalus Joseph P. Tracy 1918-6-23 4958 Humboldt near Carroll place (Boynton Prairie road, around Humboldt Bay); Northern Coast Ranges, Humboldt Bay, Boynton Prairie 304 Comment
  UC1222481  Euchiton involucratus Joseph P. Tracy 1948-9-26 18232 Humboldt 6 mi se Arcata (at s end of Fickle Hill); Fickle Hill 609 Comment
  UC1199350  Euchiton sphaericus Joseph P. Tracy 1925-8-9 7229 Humboldt near Miranda; North Coast Ranges, South Fork of Eel River 91 Comment
  UC1223111  Euchiton sphaericus Joseph P. Tracy 1947-9-28 17933 Humboldt Park's place Trinidad 3 Comment
  CAS-BOT-BC310487  Euchiton sphaericus Henry M. Pollard 1947-8-30 s.n. Humboldt North Road along Klamath between Van Fleet ranch and Redcap Creek, nr. Orleans Comment
  NY263154  Euphorbia occidentalis V. K. Chesnut 1888-7-23 Humboldt Hy-Am-Pum (spelling?) Comment
  CAS-BOT-BC312207  Eurybia radulina Henry M. Pollard 1946-8-28 s.n. Humboldt Near summit of Orleans Mt. 1828 Comment
  UC419045  Eurybia radulina H. E. Parks, J. P. Tracy 1930-9-15 769 Humboldt Kneeland Bald Hills Comment
  SEINET3243998  Euthamia occidentalis Joseph P. Tracy 1931-1 9636 Humboldt Lack Pond; in Trinitiy River Valley, opposite mouth of Willow Creek. 152 Comment
  CAS-BOT-BC278181  Festuca Doris Kildale Gillespie 1931-6-7 10606 Humboldt South Fork Mt., Blake Lookout 1726 Comment
  HSC40339  Festuca arundinacea Linda M. Barker 1976-6-1 1566 Humboldt Lanphere-Christensen Dunes, 3 mi. W of Arcata. Comment
  SEINET200342 Image available Festuca californica J. P. Tracy 1901-6-23 1175 Humboldt Eureka. 0 Comment
  RSA121321  Festuca elmeri H. S. Yates 1936-6-17 5690 Humboldt Lower N.W. slope of Buck Mountain 793 Comment
  UCD65930  Festuca elmeri A. A. Beetle; G. L. Stebbins Jr. 1942-6-2 3467 Humboldt 2 miles west of Bridgeville, banks above Van Dusen River. Comment
  HSC26160  Festuca idahoensis J. P. Smith, Steve Selva 1970-6-30 4111 Humboldt Comment
  UC535634  Festuca idahoensis Joseph P. Tracy 1932-7-12 10447 Humboldt Corral Ranch Klamath Mountains, Trinity Summit 1524 Comment
  POM214838  Festuca occidentalis Victor Duran 1933-5-11 3410 Humboldt Van Duzen River, near Bridgeville. Comment
  HSC9975  Festuca rubra R. I. Bonn 1965-5-7 24 Humboldt 4 mi. W of Arcata on Lanphere Rd. Comment
  RSA126630  Festuca rubra H. S. Yates 1936-6-16 5671 Humboldt 1 mile N of Samoa. 3 Comment
  UC1145216  Festuca rubra Joseph P. Tracy 1938-7-4 15986 Humboldt Valley of South Yager Creek 762 Comment
  POM126171  Festuca subulata Joseph P. Tracy 1903-5-23 1899 Humboldt Alder Point, on Eel River. 244 Comment
  UC1145205  Festuca subulata Joseph P. Tracy 1937-7-25 15541 Humboldt head of Little Hors-Linto Creek Trinity Summit, Little Hors-Linto Creek 1371 Comment
  UC552676  Festuca subulata Joseph P. Tracy 1935-7-27 14295 Humboldt McKay Prairie Trinity Summit 1584 Comment
  POM111919  Festuca subuliflora H. P. Chandler 1901-05 1179 Humboldt Humboldt Bay. 30 Comment
  UCD66498  Festuca subuliflora J. I. Mallory 1955-2-22 115 Humboldt Peavine Ridge one mile north of Luke Prairie. 701 Comment
  CAS-BOT-BC453521  Fragaria chiloensis Ashley C. Browne 1936-6-11 s.n. Humboldt Patrick's Point State Park Comment
  HSC26395  Fragaria chiloensis T. O. Osborne 1970-9-16 35 Humboldt Trinidad Bay, Prisoner Rock Comment
  SD39960  Fragaria chiloensis Edith A. Purer 1932-7-27 4159 Humboldt Samoa, sand dunes Comment
  HSC70357  Fragaria vesca M. A. Baker 1980-6-7 1866 Humboldt Near Ammon Creek 732 Comment
  UC1949135  Fragaria vesca subsp. californica Barbara Ertter with Thomas J. Delendick 1987-5-16 6933 Humboldt 3 mi E of Berry Summit on Hwy 299, ca 20 airmiles E of Arcata; on S side of road above Willow Creek Comment
  CAS-BOT-BC457928  Fragaria vesca subsp. californica Doris Kildale Gillespie 1980-5-10 656 Humboldt Shelter Cove, At base of coastal bluffs of Western beach, Point Delgada; Coastal Marine Terrace & Coastal Bluff 4 Comment
  UCD112819  Frangula purshiana Linda M. Barker 1976-7-5 1648 Humboldt Lanphere-Christensen Dunes 3 miles west of Arcata. Comment
  RSA430762  Fraxinus latifolia Lyman Benson 1928-7-10 393 Humboldt Weott Ranger Station. Mtn. Range: Seaward N Coast; Watershed: S Fork Eel River. 61 Comment
  HSC15550  Fritillaria affinis Greg Bos 1965-5-15 275 Humboldt Berry Summit near Hwy. 299 793 Comment
  HSC34910  Fritillaria affinis Thomas W. Nelson, James Nelson 1975-5-24 1841 Humboldt McKeown Ranch, N of Dinsmore. Comment
  UC1197625  Fritillaria affinis Joseph P. Tracy 1933-6-13 12575 Humboldt Hoopa Mountain, near summit on road from Hoopa westward to Bair's Hoopa Mountain 1066 Comment
  UC666945  Fritillaria affinis Joseph P. Tracy 1933-7-11 12710 Humboldt Grouse Mountain 1524 Comment
  UC1005680  Fritillaria affinis Frank W. Gould 1939-5-30 830 Humboldt Horse Mountain, about half-way up mountain road Horse Mountain 1000 Comment
  UC1197634  Fritillaria affinis Joseph P. Tracy 1919-4-27 5127 Humboldt Ocean Beach at Humboldt Bay Ocean Beach; Northern Coast Region, Humboldt Bay, Ocean Beach Comment
  JEPS30796  Fritillaria purdyi Mrs. Barnwell 1923-4-28 Humboldt Northern Coast Ranges, Chalk Mountain Chalk Mountain; Northern Coast Ranges, Chalk Mountain 762 Comment
  HSC41592  Galium ambiguum subsp. siskiyouense Thomas W. Nelson, Jane P. Nelson 1977-7-1 3558 Humboldt Along ridge between Bear Creek and Blanket Creek 1494 Comment
  UCD121621  Galium aparine Linda M. Barker 1976-6-14 1601 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  HSC97507  Galium aparine C. Witte 2007-5-22 75 Humboldt Cold Spring. 1/2 mile south of Titlow Hill. 1422 Comment
  HSC41599  Galium bolanderi Thomas W. Nelson, Jane P. Nelson 1977-8-6 3705 Humboldt Above Alder Springs 1555 Comment
  SEINET6991542  Galium californicum Wanda P. Vestal, A. G. Vestal 1937-6-23 s.n. Humboldt Open burnt timber, saddle near east end of Bald Hills, southeast of Orick. Comment
  UC1196106  Galium californicum subsp. californicum Joseph P. Tracy 1942-5-16 17329 Humboldt along river half way between Miranda and Garberville; S. Fork Eel River 121 Comment
  SEINET7722393  Galium nuttallii Chesnut, Drew Humboldt S. Fork Mt. Comment
  BLMAR206  Galium parisiense Jennifer Anthony-Wheeler 1996-7-9 206 Humboldt Pilots ridge., growing in warm, dry, rocky soil in understroy in mixed hardwood forest 1280 Comment
  HSC70963  Galium porrigens Gail Newton 1980-7-15 1585 Humboldt Near Sims Mtn. 1311 Comment
  HSC99319  Galium porrigens var. porrigens C. B. Wolf 1927-8-30 1225 Humboldt 2 mi. S of Petrolia on the Matole River near the road crossing the river Comment
  HSC79485  Galium porrigens var. porrigens Kenneth Clark 1980-3-1 508 Humboldt Shelter Cove, middle alluvial terrace, Dead Man's Gulch 37 Comment
  JEPS52748  Galium porrigens var. porrigens Lauramay T. Dempster and G. L. Stebbins 1963-7-10 3863 Humboldt 4.2 mi n Redway (along US 101, w-facing slope above Eel River) 91 Comment
  JEPS52750  Galium porrigens var. porrigens L. T. Dempster and G. L. Stebbins 1963-7-8 3846 Humboldt on road to Eureka 2.1 mi w Bridgeville (along Van Duzen River); along Van Duzen River 160 Comment
  HSC38387  Galium trifidum Peter Sorensen 1976-6-14 Humboldt N Spit of Humboldt Bay, S of Samoa near Humboldt County Airport Comment
  HSC57325  Galium triflorum Overton, Butler 1979-7-24 9643 Humboldt Near Friday Camp, close to the town of Willow Creek. 1250 Comment
  CAS-BOT-BC303400  Gamochaeta ustulata Ashley C. Browne 1936-6-11 s.n. Humboldt Patrick's Point State Park Comment
  CAS-BOT-BC303399  Gamochaeta ustulata Doris K. Kildale 1926-4-30 1934 Humboldt Fruitland Hill - Harris Rd Comment
  HSC12588  Garrya elliptica Gary J. Stebbins 1970-2-2 5 Humboldt Along Clam Beach lagoon rd. off McKinleyville exit with Hwy. 101 Comment
  HSC22830  Garrya elliptica Gene S. Van Horn 1963-1-5 35 Humboldt On W.M. Lanphere's ranch 9 Comment
  HSC89422  Garrya elliptica P. A. Daly 1984-5-13 18 Humboldt Along trail at Trinidad Head 61 Comment
  HSC98071  Garrya fremontii Cara Witte 2007-7-12 530 Humboldt Ammon Ridge Road. Approximately 2 miles southeast of intersection with 5N10. 1353 Comment
  UC1122677  Garrya fremontii A. E. Wieslander 1931-5-17 196 Humboldt Bald Hills; Hoopa Quad. Comment
  RSA120510  Gastridium phleoides S. S. Tillett 1956-7-6 609 Humboldt South slope along Bar Shanty Road, 5 miles from Orleans. 488 Comment
  CAS-BOT-BC58911  Gaultheria shallon L. R. Abrams 1916-7-11 6010 Humboldt Mouth of Grizzly Creek on Van Duzor River Comment
  CAS-BOT-BC58914  Gaultheria shallon Elizabeth Parsons Hawver 1915-6-1 s.n. Humboldt Carlotta Comment
  HSC98344  Gaultheria shallon Jimerson, J. Pageau 1979-6-12 531 Humboldt Near Hopkins Butte, close to the town of Orleans 1036 Comment
  SBBG53002  Gaultheria shallon J. D. Hobson -Jul-1966 Humboldt Eureka Harbor, Loleta, 10 mi S of Eureka Comment
  SDSU2870  Gaultheria shallon Harvey 1938-8-13 2254 Humboldt West of Arcata. Comment
  UC32704  Gaultheria shallon Chesnut and Drew 1888-7-8 Humboldt near Arcata Comment
  SEINET11993510  Gaultheria shallon F. H. Utech 1986-1 86 -393 Humboldt ca 5 mi N on Kings Peak Rd, from junction with Shelter Cove Rd, near Tolkan Recreation Area 480 Comment
  HSC55075  Gayophytum diffusum subsp. parviflorum G. L. Clifton, Griswold 1979-7-31 11684 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1805 Comment
  UC505119  Gayophytum heterozygum Joseph P. Tracy Jul 16 1930-Jul 19 1930 9050 1/2 Humboldt along summit near Blake Lookout; Northern Coast Ranges, South Fork Mountain 1737 Comment
  UC205214  Gayophytum humile Chesnut and Drew July 1888 Humboldt S, Fork Mt. Comment
  CAS-BOT-BC208037  Genista monspessulana Elmer I. Applegate 1931-3-28 6627 Humboldt Redwood Highway, near Dyrville Comment
  JEPS24349  Gentiana calycosa Joseph P. Tracy 1939-8-16 16412 Humboldt Horse Mountain Northern Coast Ranges 1402 Comment
  SD42345  Gentiana sceptrum Carl B. Wolf 1937-9-12 9328 Humboldt Big Lagoon; south side along Redwood Highway. 6 Comment
  POM247167  Gentiana sceptrum Joseph P. Tracy 1927-8-22 8338 Humboldt Bald Mountain, near High Prairie. 1067 Comment
  POM318969  Gentiana sceptrum Patricia Wilder 1968-8-21 4390 Humboldt Bog in Big Lagoon Park, just west of Hwy 101; Mt. Range: Coast range; Drainage Area: Big Lagoon to Pacific Ocean. 2 Comment
  UC1197400  Geranium carolinianum Joseph P. Tracy 1912-6-30 3712 Humboldt Eureka, at the Stephen Hill place Northern Coast Region 0 Comment
  UC169886  Geranium dissectum Harley P. Chandler Jun 1901 1420 Humboldt Klamath River North Coast Ranges Comment
  SD113958  Geranium pilosum Darley F. Howe 1961-8-1 3101 Humboldt 3.3 miles north of Trinidad on Highway 101. Comment
  HSC16987  Gilia millefoliata Norman H. Moe 1962-5-17 Humboldt Lanphere's Place Comment
  UC23729  Gilia millefoliata Harley P. Chandler May, 1901 1135 Humboldt Humboldt Bay North Coast Ranges, Humboldt Bay 3 Comment
  UCR202330  Gilia millefoliata Peter L. Morrell 1993-6-9 280 Humboldt North Coast, Samoa Peninsula near Eureka, along Hwy 255, 1.5 miles south of Samoa intersection, west side of highway 7 Comment
  UC1191700  Glaux maritima Malcolm A. Nobs, S. Galen Smith 1949-8-11 1343 Humboldt at eastern shore of Stone Lagoon Stone Lagoon Comment
  CAS-BOT-BC218431  Glehnia littoralis subsp. leiocarpa L. R. Abrams 1916-7-18 6140 Humboldt At Trinidad Comment
  HSC26157  Glyceria elata J. P. Smith, Steve Selva 1970-6-30 4131 Humboldt Comment
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Jan 25 2012
  SEINET200357 Image available Glyceria elata J. P. Tracy 1934-7-18 13429 Humboldt Grouse Mountain 1524 Comment
  UC187285  Glyceria striata Joseph P. Tracy 1906-7-4 2538 Humboldt near Hydesville; Northern Coast Region 60 Comment
  RSA44453  Glyceria striata Henry M. Pollard 1947-8-30 s.n. Humboldt North road along Klamath River near Van Fleet Ranch, Orleans region. Comment
  SD64115  Glycyrrhiza lepidota W. Bertsch 1953-7-30 224 Humboldt U. S. 101, Dyerville 60 Comment
  UC1199342  Gnaphalium palustre Joseph P. Tracy 1927-9-4 8364 Humboldt sand dunes near Samoa; Northern Coast Region, Humboldt Bay 6 Comment
  UCD132451  Gnaphalium palustre James Payne Smith Jr. 1976-10-30 8995 Humboldt Mad River, east of Essex Lane exit. Comment
  SD88350  Gnaphalium purpureum Darley F. Howe 1972-6-30 Humboldt Trinidad Comment
  JEPS79300  Gratiola ebracteata Wm. C. Vinyard and Scott W. Hilton 1980-9-16 800916 .1 Humboldt near summit of Snowcamp Mnt (ne side of Snowcamp Lake); near summit Snowcamp Mnt, ne side Snowcamp Lake 1371 Comment
  HSC79172  Grindelia hirsutula C. K. Geldin-Meyers 1985-8-3 100 Humboldt Mosley Is., W end of Cannibal Is. Rd., mouth of the Eel River 3 Comment
  UC1223104  Grindelia hirsutula Joseph P. Tracy 1947-10-6 17941 Humboldt along highway at Smith Point Bridge (4 mi s of Garberville) Comment
  UC637144  Grindelia hirsutula Edward Lee 1934-8-17 1148 Humboldt e shore Big Lagoon (35 mi n of Eureka); e shore of Big Lagoon 3 Comment
  UC201390  Guillenia lasiophylla Joseph P. Tracy 1918-5-1 4907 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  UC1239637  Hackelia bella Joseph P. Tracy 1937-7-29 15587 Humboldt w slope near top at Hyampom Trail; South Fork Mountain 1676 Comment
  UC449871  Hackelia bella P. E. Goddard 1906-6 677 Humboldt Sasseck Peak Comment
  HSC76193  Hackelia californica Overton, Butler 1979-7-24 9786 Humboldt Near Black Rock, close to the town of Willow Creek 1463 Comment
  UC525574  Hackelia micrantha Joseph P. Tracy 1932-7-11 10421 Humboldt Corral Prairie; Klamath Mountains, Trinity Summit 1524 Comment
  CAS-BOT-BC302443  Hazardia whitneyi var. discoidea Henry M. Pollard 1946-9-2 s.n. Humboldt Orleans Mt. 1524 Comment
  UC205152  Hazardia whitneyi var. discoidea Joseph P. Tracy 1919-9-23 5287 Humboldt Trinity Summit Northern Coast Ranges, Trinity Summit 1828 Comment
  UC450223  Hazardia whitneyi var. discoidea Joseph P. Tracy 1919-9-23 5287 Humboldt Trinity Summit Northern Coast Ranges, Trinity Summit 1828 Comment
  RSA12428  Helenium bigelovii C. B. Wolf 1934-7-2 5866 Humboldt At small lake at Snow Camp (Mtns E of Korbel) 1372 Comment
  HSC5764  Helenium bigelovii J. Wendell Howe 1934-6-24 1278 Humboldt Bald Hills - Mad Woods Comment
  UC175963  Helenium bolanderi Joseph P. Tracy 1912-7-24 3808 Humboldt Eureka Northern Coast Region, Eureka 0 Comment
  HSC25943  Helenium puberulum Thomas W. Nelson 1970-10-31 293 Humboldt Eel River near N end of the Scotia Bluff. Comment
  HSC98351  Helminthotheca echioides J. P. Smith 1976-11-21 9001 Humboldt Arcata, at the foot of I St. Comment
  RSA255766  Hemitomes congestum Gary D. Wallace, S. Carlquist 1972-6-30 1102 Humboldt Prairie Crrek Redwoods Stl. Pk. near the coast. Comment
  RSA11161  Hemizonia congesta C. B. Wolf 1927-8-29 1218 Humboldt Devils' Gate, S of Cape Mendocino Comment
  CAS-BOT-BC309984  Hemizonia congesta subsp. tracyi M. S. Jussel 1931-5-2 s.n. Humboldt 6 miles from Garberville Comment
  UC176756 Image available Hemizonia congesta subsp. tracyi J. P. Tracy 1908-7-30 2754 Humboldt opposite Buck Mountain; valley of Van Duzen River; valley of Van Duzen River opposite Buck Mt., Humboldt Co. 762 Comment
  UC205207  Hemizonia congesta subsp. tracyi Joseph P. Tracy 1920-8-1 5348 Humboldt Kneeland Prairie 762 Comment
  UC1197367  Heracleum lanatum Joseph P. Tracy 1930-7-18 9079 Humboldt near Mckay Camp S. Fork Mt. 1676 Comment
  HSC36432  Heracleum maximum John Rehling 1974-7-8 4 Humboldt County park at Big Lagoon Comment
  HSC55744  Heracleum maximum G. L. Clifton, Terry Griswold 1979-7-26 10258 Humboldt Near High Spring, close to the town of Forks of Salmon 2024 Comment
  RSA24305  Heracleum maximum C. B. Wolf 1941-2-25 9956 Humboldt Dry Lagoon State Park 8 Comment
  SD53245  Heracleum maximum Darley F. Howe 1962-5-22 3301 B Humboldt 0.5 miles north of Orick on # 101 29 Comment
  SBBG25781  Hesperocyparis macrocarpa E. R. Blakley 1966-8-17 6801 Humboldt Patrick's Pt, 5 mi N of Trinidad 60 Comment
  HSC74733  Heterocodon rariflorum Gail Newton 1981-7-24 2318 Humboldt Near Chaparral Mtn. 1433 Comment
  SEINET10460656  Heterocodon rariflorum Tracy TRACY 2199 Humboldt EUREKA Comment
  SEINET10873420  Heterocodon rariflorum Chesnut CHESNUT 1888 Humboldt KNEELAND Comment
  SEINET5782099 Image available Heterotheca oregona S. K. Harris 1938-8-24 Humboldt Eel River, near Fernbridge Comment
  CAS-BOT-BC311029  Heterotheca oregona var. compacta Joseph P. Tracy 1900-9-10 950 Humboldt Northern Coast Region. Near Hydesville 60 Comment
  CAS-BOT-BC311052  Heterotheca oregona var. oregona Carl B. Wolf 1927-8-27 1156 Humboldt On the Klamath River 2 mi. below the Salmon River Comment
  CAS-BOT-BC311057  Heterotheca oregona var. oregona Doris K. Kildale 1926-5-31 2025 Humboldt Miranda, on South Fork of Eel River Comment
  HSC102136  Heuchera merriamii M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 1040 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  SEINET200860  Heuchera micrantha J. P. Tracy 2865 Humboldt Valley of Van Duzen River opposite Buck Mt 762 Comment
  CAS-BOT-BC420405  Heuchera micrantha var. diversifolia Harley P. Chandler 1901-5-1 1231 Humboldt Redwood Belt 457 Comment
  CAS-BOT-BC420724  Heuchera micrantha var. diversifolia L. R. Abrams 1918-6-16 7150 Humboldt Willow Creek Comment
  HSC98607  Heuchera micrantha var. micrantha Cara Witte 2008-7-14 890 Humboldt Horse Mountain Botanical Area. Forest Service Road 6N18. At end of the road. 1407 Comment
  HSC56073  Heuchera rubescens G. L. Clifton, Griswold 1979-7-31 11744 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa. 1845 Comment
  HSC81906  Heuchera rubescens Thomas W. Nelson 1979-7-11 4991 Humboldt N Trinity Mtn. and ridge to E. 1829 Comment
  HSC74180  Hieracium albiflorum M. A. Baker 1980-7-23 3162 Humboldt Near Orleans Mtn. 1859 Comment
  HSC98820  Hieracium albiflorum Cara Witte 2008-7-30 963 Humboldt Spike Buck Mountain. Forest Service Road 5N18. 1/2 mile from intersection with National Forest 1. 1589 Comment
  BLMAR227  Hieracium albiflorum Jennifer Anthony-Wheeler 1996-7-11 227 Humboldt N.Dobbyn creek, common throughout the forest floor 1005 Comment
  UC1199461  Hieracium albiflorum Joseph P. Tracy 1926-11-7 7825 Humboldt Table Bluff Northern Coast Region, Humboldt Bay, Table Bluff 152 Comment
  CAS-BOT-BC318530  Hieracium greenei Freed W. Hoffman 1949-7-15 3010 Humboldt East slope of Mule Slide, Franciscan sandstone, Mt. Lassic group a little south of Blue Ridge Comment
  RSA0016044  Hippuris vulgaris John R. Keith 1973-5-15 s.n. Humboldt Approximately 200 yards east of junction of Guintoli Ln. and West End Rd. Comment
  HSC10132  Holcus lanatus J. R. Eichelberger 1964-5-13 83 Humboldt 1/4 mile from U.S. 101 on the N side of the Mad River. Comment
  HSC58657  Holcus lanatus G. L. Clifton 1979-7-31 11851 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  HSC81934  Holcus lanatus Thomas W. Nelson, Jane P. Nelson 1979-7-3 4959 Humboldt Along road to Joe Losey property at junction of Kneeland and Maple Creek Rds. 610 Comment
  UCR143024  Holcus lanatus M. S. Jussel 1931-5-2 s.n. Humboldt Northwestern Coast; Outer North Coast Ranges, near Garberville 183 Comment
  BLMAR686  Holodiscus discolor Jennifer Wheeler 2013-6-25 686 Humboldt King range, Strawberry Rock 62 Comment
  HSC45632  Holodiscus discolor Diane L. Reed 1978-4-22 10 Humboldt Tish Tang Campground, 5 mi. N of Willow Creek on Hwy. 96 Comment
  UC1198702  Holodiscus discolor J. P. Tracy 1901-6-16 1150 Humboldt immediate vicinity of Eureka 0 Comment
  UC154212  Holodiscus discolor J. P. Tracy 1909-7-3 3002 Humboldt immediate vicinity of Eureka (near Ocean View Cemetery) 0 Comment
  UC902139  Holodiscus discolor Joseph P. Tracy 1947-8-24 17906 Humboldt Trinity Summit near Box Camp; Trinity Summit 1463 Comment
  HSC10231  Hordeum vulgare S. J. Hawks 1965-4-6 23 Humboldt Along Clam Beach access road. Comment
  UC902136  Horkelia californica Joseph P. Tracy 1949-7-7 18332 Humboldt Table Bluff Ridge 91 Comment
  CAS-BOT-BC537898  Horkelia tridentata var. flavescens Alice Eastwood; John Thomas Howell 1937-6-23 4806 Humboldt Little Van Duzen River Comment
  UCD106154  Hosackia oblongifolia Tofsrud 1948-9-1 s.n. Humboldt Clear Lake, on road from Horse Mt. to Grouse Mt. 1371 Comment
  HSC98966  Hosackia oblongifolia var. oblongifolia Cara Witte 2007-6-12 239 Humboldt Horse Mountain Botanical Area. Near mine area. Forest Service Road 6N38. 1360 Comment
  CHSC35550  Hosackia rosea D. E. Anderson 1965-5-8 3666 Humboldt Hw. 299, east of Blue Lake, between bridge over North Fork Mad River and Lord Ellis Summit. Comment
  CDA38356  Hydrocotyle ranunculoides W. F. Cruickshank 1961-5-27 s.n. Humboldt Arcata, Weyerhauser Lumber Co. 0 Comment
  UC1239762  Hydrophyllum occidentale Joseph P. Tracy 1908-6 2633 Humboldt Kneeland Prairie; Northern Coast Ranges 762 Comment
  UC1239768  Hydrophyllum tenuipes Joseph P. Tracy 1937-7-2 15403 Humboldt head of Little Hors-Linto Creek; Trinity Summit 1371 Comment
  HSC57965  Hypericum anagalloides G. L. Clifton, Griswold 1979-7-31 11676 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1805 Comment
  HSC74430  Hypericum anagalloides Gail Newton 1980-8-10 2060 Humboldt Near Blake Mtn. 1707 Comment
  HSC98128  Hypericum anagalloides Cara Witte 2007-6-28 380 Humboldt FS Road 5N10. Approximately 0.5 mi E of intersection with National Forest 1. 1426 Comment
  UC1714398  Hypericum formosum var. scouleri Joseph P. Tracy 1913-7 4393 Humboldt Patrick's Point Northern Coast Ranges, Patrick's Point 30 Comment
  HSC53955  Hypericum perforatum Griswold, Butler 1979-7-11 7005 Humboldt Near Snow Camp Lake, close to the town of Willow Creek. 1393 Comment
  HSC56972  Hypericum perforatum Overton, Butler 1979-7-23 9501 Humboldt Near Titlow Hill, close to the town of Willow Creek. 1280 Comment
  UC1004334  Hypericum perforatum W. L. Colwell 1954-11-20 19 Humboldt along Eel R. 3 mi. e. of S. Fork; Quadrangle 29B4, Eel R. 91 Comment
  CAS-BOT-BC401304  Hypericum scouleri Ira L. Wiggins 1932-7-18 5886 Humboldt Between Arcata and Bayside Comment
  HSC45647  Hypochaeris glabra Diane L. Reed 1978-4-22 19 Humboldt Tish Tang Campground, 5 mi. N of Willow Creek on Hwy. 96 Comment
  UC32896  Hypochaeris radicata Joseph Burtt Davy and Walter C. Blasdale 1899-6-13 5490 Humboldt near Camp Grant; North-Western California Comment
  POM257407  Iliamna latibracteata H. E. Parks, S. T. Parks 1935-06 5543 Humboldt East side of Prairie Creek, north of Orick Comment
  HSC55330  Ipomopsis aggregata Griswold, Butler 1979-7-12 7170 Humboldt Near Groves Prairie, close to the town of Willow Creek. 1256 Comment
  UC1565799  Iris douglasiana R. Spellenberg 1990-7-10 10240 Humboldt 11 mi s Berry Summit (on Calif. Hwy. 299) on U.S.F.S. 1 (11 air mi e of Burnt Ranch, extreme e edge of Humboldt County) 1432 Comment
  JEPS17242  Iris douglasiana Lincoln Constance 1934-5-31 763 Humboldt from w boundary of Park to Grasshopper Pk. rd.(Squaw Cr.) (Bull Creek flat, along Bull Creek, n side of creek); South Fork Eel River, Bull Creek Region Comment
  RSA135857  Iris douglasiana Lee W. Lenz, E. K. Balls 1951-5-8 16509 Humboldt Just south of Scotia (to 4.2 miles south) along Highway 101 Comment
  RSA137356  Iris douglasiana Lee W. Lenz, E. K. Balls 1956-6-12 21666 Humboldt Between Willow Creek and Blue Lake, U.S. Highway 299 366 Comment
  SEINET4152126  Iris purdyi R. Bacigalupi, L. Constance, J. P. Tracy, R. Moran, R. L. Rodriguez, S. Carlquist 1951-6-14 3414 Humboldt About Snow Camp, ridge between Mad River and Redwood Creek, Bald Mountain 1433 Comment
  JEPS93199  Iris purdyi Carol A. Wilson 1992-4-26 92 -8 Humboldt 1.5 mi n of Miranda ( 100 ft on Cathey Road from Redwood Drive) 91 Comment
  RSA167433  Iris purdyi Joseph P. Tracy 1950-7-1 18950 Humboldt Friday Camp, Friday Ridge, Grouse Mountain, North Coast Ranges 1220 Comment
  HSC99342  Iris tenax subsp. klamathensis T. Jimerson, J. Pageau 1979-5-24 467 Humboldt Near Orleans 143 Comment
  HSC96228  Iris tenuissima subsp. tenuissima Sara March, Gillian Levy 2005-6-10 7 Humboldt Coldspring Camp, 7.4 mi. S of Hwy. 299 on NF1 1370 Comment
  JEPS79909  Isatis tinctoria Joseph P. Tracy 1939-4-29 16239 Humboldt Klamath River at mouth of Slate Creek; Klamath River, Slate Creek 121 Comment
  JEPS60152  Isoetes bolanderi Joseph P. Tracy 1937-8-12 15650 Humboldt Snow Camp 1402 Comment
  CHSC96435  Isolepis setacea Gordon Leppig 1999-10-3 1257 Humboldt Big Lagoon County Park, Big Lagoon Bog. NAD 27 UTM Zone 10, 405321E 4557202N. 3 Comment
  HSC13941  Ixia maculata R. van Weemen van Noord 1966-4-16 19 Humboldt 100 yds. S of N end of Samoa Drag St. 9 Comment
  UC665529  Jaumea carnosa H. E. Parks 1941-8-1 24187 Humboldt Big Lagoon Comment
  CAS-BOT-BC340153  Jaumea carnosa C. C. Harris; S. K. Harris 1939-8-26 s.n. Humboldt South shore of Humboldt Bay Comment
  UC275455  Jaumea carnosa Joseph P. Tracy 1927-8-2 7222 Humboldt Big Lagoon Northern Coast Range 6 Comment
  CAS-BOT-BC102330  Juglans regia Henry M. Pollard 1946-8-27 s.n. Humboldt South side of Klamath River, near Boyce Creek, Orleans region Comment
  UC1103037  Juncus bolanderi Joseph P. Tracy 1900-9-2 932 Humboldt Eureka Northern Coast Region 0 Comment
  RSA246797  Juncus breweri Robert F. Thorne, Percy C. Everett 1965-8-5 35161 Humboldt Samoa Dunes. 3 Comment
  RSA32913  Juncus breweri A. A. Heller 1929-8-4 s.n. Humboldt Little River. Comment
  UC14896  Juncus bufonius J. P. Tracy 1900-8-5 913 Humboldt immediate vicinity Eureka 0 Comment
  RSA246802  Juncus bufonius Robert F. Thorne, Percy C. Everett 1965-8-7 35229 Humboldt Samoa Peninsula. 3 Comment
  RSA70280  Juncus covillei F. W. Peirson 1923-7-9 3666 Humboldt Humboldt County State Park on Eel River, northern California. Comment
  UC1152092  Juncus ensifolius Joseph P. Tracy 1937-8-12 15643 Humboldt Snow Camp Comment
  HSC62860  Juncus hesperius J. M. DiTomaso 1979-5-16 1015 Humboldt Corner of LK Wood and 14th St., Arcata Comment
  HSC96370  Juncus lescurii Gordon Leppig 1999-10-3 1259 Humboldt Big Lagoon Bog, Big Lagoon County Park 3 Comment
  HSC63280  Juncus parryi M. A. Baker 1979-6-27 930 Humboldt Rock faces E of Oregon Creek Comment
  RSA126572  Juncus patens H. S. Yates 1936-6-23 5858 Humboldt 2 miles southeast of mouth of Mad River. 305 Comment
  RSA70263  Juncus phaeocephalus var. phaeocephalus F. W. Peirson 1923-7-11 3669 Humboldt 7 miles N of Arcata, Humboldt County Comment
  HSC43841  Juncus regelii Maralyn O'Meara 1974-7-11 530 Humboldt Kneeland, Barry Ridge along private road Comment
  SEINET11788655  Juncus xiphioides J. P. Tracy 1938-1 16171 Humboldt Lake Prairie Comment
  NY790278  Keckiella corymbosa J. P. Tracy 1912-7-26 3847 Humboldt Kneeland Prairie Comment
  RSA424319  Keckiella corymbosa Lester Rowntree 1931-7-21 s.n. Humboldt Mattole River Bridge 2 miles from Petrolia. Comment
  UC566682  Keckiella corymbosa H. L. Mason 1928-7-14 4900 Humboldt near Garberville; East Fork of the Eel River Comment
  SEINET12269343  Keckiella corymbosa J. P. Tracy 1950-1 19315 Humboldt at Ishi-pishi Falls W side of Klamath River opposite mouth of Salmon River Comment
  CAS-BOT-BC237831  Keckiella lemmonii Marcus E. Jones 1931-7-16 28828 Humboldt Junction, East of Arcata Comment
  UC479136  Keckiella lemmonii Marcus E. Jones, A. M. 1931-7-16 28828 Humboldt e of Arcata (Junction) Comment
  UC673097  Kelloggia galioides Joseph P. Tracy with Dr. F. W. Pennell 1940-7-7 16662 Humboldt Friday Ridge; Grouse Mt. 1280 Comment
  JEPS11333  Kickxia elatine Joseph P. Tracy 1934-6-22 13246 Humboldt Willow Creek; Trinity River Valley 152 Comment
  JEPS3419  Kickxia elatine Mrs. Emanuel Fritz 1934-8-4 Humboldt Phillipsville South Fork Eel River (Greenwald orchard, w Humboldt County) Comment
  HSC32341  Koeleria macrantha D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5640 Humboldt Senteney Rock, a large barren Franciscan Rock along Swayback Ridge. Comment
  UC581810  Kyhosia bolanderi Joseph P. Tracy 1935-7-23 14136 Humboldt summit Trinity 1584 Comment
  UC577364  Lamium amplexicaule Joseph P. Tracy 1923-6-10 6261 Humboldt Eureka; Northern Coast Ranges 0 Comment
  UC129576  Lasthenia californica subsp. californica Harley P. Chandler May 1901 1260 Humboldt Redwood belt; Coast Ranges 152 Comment
  UC169320  Lasthenia californica subsp. californica Joseph P. Tracy and Ernest B. Babcock 1912-5-11 3626 Humboldt between Hydesville and Alton; Hydesville 30 Comment
  UC1199079  Lathyrus japonicus Joseph P. Tracy 1915-6-6 4647 Humboldt mouth of Elk River Northern Coast Region, Eureka 0 Comment
  UC709418  Lathyrus lanszwertii var. tracyi Joseph P. Tracy 1941-3-26 16844 Humboldt w of mouth of South Fork of Trinity River 304 Comment
  HSC71617  Lathyrus latifolius J. P. Smith 1973-5-26 6800 Humboldt Scotia Bluffs along the Eel River near Rio Dell Comment
  UCD106378  Lathyrus littoralis Linda M. Barker 1976-6-1 1560 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  HSC45332  Lathyrus littoralis R. York, Linda York 1978-4-1 100 Humboldt End of lighthouse Rd., 2 mi. SE of Petrolia. Comment
  POM214877  Lathyrus littoralis Joseph P. Tracy 1929-7-4 8641 Humboldt Sand dunes near Samoa, on Humboldt Bay. Comment
  UC1191473  Lathyrus palustris Malcolm A. Nobs and S. Galen Smith 1949-8-3 1187 Humboldt s outskirts Eureka Comment
  BLMAR644  Lathyrus torreyi Jennifer Wheeler 2011-7-7 644 Humboldt Lacks Creek, Pine Ridge Road, spur at Stormy Saddle 1097 Comment
  RSA64962  Lathyrus torreyi C. L. Hitchcock 1949-6-7 19084 Humboldt Ca 15 miles E of Blue Lake, along Highway #299. Comment
  RSA74591  Lathyrus tracyi C. L. Hitchcock 1949-6-8 19086 Humboldt 3 miles SE of Willow Creek, along Highway #299. Comment
  UC1199068  Lathyrus vestitus Joseph P. Tracy 1933-6-24 12612 Humboldt Big Lagoon 152 Comment
  UC931756  Lathyrus vestitus C. L. Hitchcock 1949-6-8 19096 Humboldt 2 mi w Blue Lake (along Highway 299) Comment
  UC495710  Lathyrus vestitus var. ochropetalus Joseph P. Tracy 1929-5-5 8579 Humboldt Phillipsville, facing South Fork of Eel River South Fork of Eel River; Northern Coast Ranges 121 Comment
  UC931759  Lathyrus vestitus var. ochropetalus C. L. Hitchcock 1949-6-8 19092 Humboldt 4 mi w Willow Creek town (near Willow Creek National Forest Camp) Comment
  UC1223219  Layia gaillardioides Joseph P. Tracy 1950-6-8 187860 Humboldt Petrolia Comment
  HSC36107  Lemna minor Neil D. Ledet 1973-11-29 7 Humboldt 16 mi. S of Ferndale, N side of Cape Town along county Rd., floating on ranch pond Comment
  UC1101253  Lemna minuscula Malcolm A. Nobs, S. Galen Smith 1949-8-9 1247 Humboldt Clam Beach Comment
  CAS-BOT-BC534641  Lemna minuta Henry M. Pollard 1956-10-11 s.n. Humboldt Orleans Forest Service Station Comment
  HSC23119  Lepidium campestre B. D. Rogers, William J. Ferlatte 1966-6-15 2109 Humboldt Larabee Valley 762 Comment
  CAS-BOT-BC89078  Lepidium didymum Peter Rubtzoff 1968-9-4 5960 Humboldt Goulds Bar, South Fork Eel River southeast of Weott. Comment
  UCD115360  Lepidium didymum James P. Smith 1973-5-26 6876 Humboldt Scotia Bluffs along the Eel River near Rio Dell. Comment
  UC1199161  Lepidium virginicum Joseph P. Tracy 1916-5-31 4690 Humboldt Holmes Flat, along Eel River from South Fork to Scotia Northern Coast Ranges, Eel River 60 Comment
  HSC49924  Leptosiphon androsaceus Maralyn O'Meara 1974-7-11 538 Humboldt Kneeland, Barry Ridge Comment
  HSC97990  Leptosiphon ciliatus subsp. ciliatus Cara Witte 2007-7-8 431 Humboldt Board Camp Mountain. Pack trail 4E26. 1463 Comment
  CAS-BOT-BC226713  Leptosiphon latisectus Alice Eastwood; John Thomas Howell 1937-6-23 4764 Humboldt Dinsmore's [Dinsmore] Comment
  UC908950  Leptosiphon latisectus Joseph P. Tracy 1927-5-8 7976 Humboldt Phillipsville, facing South Fork of Eel River Northern Coast Ranges 121 Comment
  UC581778  Lessingia nemaclada Joseph P. Tracy 1929-8-18 8656 Humboldt opposite Buck Mountain; Northern Coast Ranges, Van Duzen River, Dinsmore's Ranch 670 Comment
  HSC91923  Leucanthemum vulgare E. Mackey 1986-7-21 Humboldt Patrick's Point State Park near Ceremonial Rock. Comment
  UC963848  Leucanthemum vulgare H. E. Parks and S. T. Parks Aug 1943 24257 Humboldt Spruce Cove; Trinidad 60 Comment
  UCSB6440  Leucanthemum vulgare Keator, Glenn 1958-6-18 Humboldt In fields from Mendocino county north through Washington, these collected at Petrolia Comment
  HSC3107  Leucojum aestivum D. B. Mitchell 1965-3-5 - 3 Humboldt 0.5 mi. N of US Coast Guard Station on Samoa Rd. Comment
  POM266015  Lewisia cotyledon var. howellii Lincoln Constance, Reed C. Rollins 1942-5-12 s.n. Humboldt Mouth of Bluff Creek, 6 miles NE of Weitchpec. 152 Comment
  HSC39423  Lewisia triphylla Thomas W. Nelson, Jane P. Nelson 1976-6-15 2725 Humboldt Along old trail from lookout to Blocksburg 1585 Comment
  UCD86624  Leymus triticoides V. L. Baker 1920-8-1 s.n. Humboldt Grizzly Bluff. Comment
  HSC75877  Ligusticum apiifolium Bill Copeland 1980-7-2 575 Humboldt Near Snow Camp Mtn. 1311 Comment
  UC1222812  Ligusticum apiifolium Joseph P. Tracy 1950-9-10 19354 Humboldt Bear R. Ridge 609 Comment
  CAS-BOT-BC436495  Ligusticum californicum Joseph P. Tracy 1937-8-12 15633 Humboldt Snow Camp 1402 Comment
  CAS-BOT-BC508403  Lilium columbianum A. M. Vollmer; L. Beane 1951-7-1 s.n. Humboldt A few miles north of Arcata Comment
  HSC26820  Lilium columbianum Clifton Raymond Chesbrough 1973-6-19 98 Humboldt 0.5 mi. N of College Cove along coast Comment
  HSC57912  Lilium kelleyanum Gilbert Muth 1979-7-31 11521 Humboldt Near Tish Tang A Tang Creek, S Fork, close to the town of Gasquet 1417 Comment
  UC1198246  Lilium kelloggii Joseph P. Tracy 1949-7-4 18324 Humboldt near Butler Valley junction with Kneeland road (Kneeland Prairie); Kneeland Prairie 670 Comment
  UC54670  Lilium occidentale J. P. Tracy 1901-6-23 1189 Humboldt immediate vicinity Eureka (near Ryan's Slough Hill) 0 Comment
  HSC57043  Lilium pardalinum subsp. pardalinum Overton, Butler 1979-7-24 9687 Humboldt Near Friday Camp, close to the town of Willow Creek. 1250 Comment
  HSC73704  Lilium rubescens M. A. Baker 1980-7-23 3184 Humboldt Near Orleans Mtn. 1859 Comment
  RSA44370B  Lilium washingtonianum Henry M. Pollard 1948-7-31 s.n. Humboldt Orleans Mountain 1677 Comment
  HSC98686  Lilium washingtonianum subsp. purpurascens Cara Witte 2008-7-10 867 Humboldt Forest Service Road 4N06A. Cow Creek Ridge. 1 mile east of National Forest 1. Under powerlines. 1254 Comment
  UC1198227  Lilium washingtonianum subsp. purpurascens Joseph P. Tracy 1946-6-23 17593 Humboldt Kneeland Prairie; near Dan McBride place 762 Comment
  JEPS19592  Limnanthes douglasii Lincoln Constance 1934-5-29 721 Humboldt Upper Look Prairie South Fork Eel River, Bull Creek Region 365 Comment
  UC164821  Limnanthes douglasii Joseph P. Tracy 1908-6-9 2648 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  HSC16906  Limonium californicum C. B. Wolf 1927-8-28 1187 Humboldt Eureka Bay, on the road to Arcata Comment
  UC60879  Linanthus bolanderi Harley P. Chandler Jun 1901 1540 Humboldt Klamath River North Coast Ranges 426 Comment
  UCD73084  Linnaea borealis var. longiflora Linda M. Barker 1976-6-14 1588 Humboldt Coastal forest and dunes 3 miles west of Arcata. Comment
  CHSC110733  Listera cordata Dean Wm. Taylor 2011-5-4 21113 Humboldt Alderpoint Road in the vicinity of the headwaters of Knack Creek 777 Comment
  RSA0049664  Listera cordata Dean Wm. Taylor 2011-5-4 21113 Humboldt Alderpoint Road in the vicinity of headwaters of Knack Creek 777 Comment
  JEPS37738  Lithocarpus densiflorus W. L. Jepson and W. W. Mott Jul 3 1903-Jul 5 1903 Humboldt Briceland; sw Humboldt County Comment
  UC1222289  Lithocarpus densiflorus Joseph P. Tracy 1950-8-4 19253 Humboldt Grasshopper Peak Bull Creek State Park, Canoe Creek (at head of Canoe Creek in Bull Creek State Park) Comment
  POM270414  Lithocarpus densiflorus var. densiflorus Lyman Benson 1927-7-12 224 Humboldt Weott Ranger Station; Mt. Range: Seaward N Coast; River: South Fork Eel. 61 Comment
  UC1225786  Lithocarpus densiflorus var. echinoides Joseph P. Tracy 1948-8-15 18135 Humboldt 2 mi e Grove's Summit; Trinity Summit 1524 Comment
  UC154055  Lithophragma affine Joseph P. Tracy 1908-6-9 2659 Humboldt Kneeland Prairie; Northern Coast Ranges, Kneeland Prairie 762 Comment
  UC154138  Lithophragma affine Mrs. M. H. Manning Apr. 1902 Humboldt near Hupa; near Hupa Comment
  CAS-BOT-BC283406  Lolium multiflorum A. A. Heller 1923-7-9 13779 Humboldt In a salt flat between Eureka and Arcata Comment
  UC50504  Lolium perenne Joseph Burtt Davy and Walter C. Blasdale 1899-7-30 6204 Humboldt Arcata; Russ Ranch Comment
  UC1222609  Lomatium dissectum Joseph P. Tracy 1950-6-15 18805 Humboldt 7 mi N of Harris (Jenk's Ranch) Comment
  HSC70564  Lomatium macrocarpum M. A. Baker 1980-7-23 3141 Humboldt Near Orleans Mtn. 1859 Comment
  UC1197155  Lomatium macrocarpum Joseph P. Tracy 1937-7-24 15522 Humboldt head of Devil's Hole (Trinity Summit); , Devil's Hole 1676 Comment
  UC154111  Lomatium utriculatum J. P. Tracy 1904-5 2043 Humboldt immediate vicinity Eureka (restricted to small patch on bluff at Bucksport); Bucksport 0 Comment
  UC1239545  Lonicera ciliosa Joseph P. Tracy 1936-8-7 15115 1/2 Humboldt 2 mi se Devil's Hole; Trinity Summit 1584 Comment
  HSC99456  Lonicera conjugialis K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-7 108 Humboldt Near North Trinity Mtn, 11. 9 mi east of Hoopa on Big Hill Rd (8N01), at Box Camp, Six Rivers National Forest. 1372 Comment
  CAS-BOT-BC240474  Lonicera hispidula A. A. Heller 1923-7-10 13799 Humboldt Along a small stream emptying into the Eel River between Scotia and Pepperwood Comment
  UCSB25050  Lonicera hispidula Keefe, Joseph 1967-7-8 Humboldt Bank of Ell River, Miranda turnoff, 12.4 miles north of Garberville on U.S. Highway 101 170 Comment
  RSA696526  Lonicera hispidula var. vacillans J. R. Bruff 1937-8-17 925 Humboldt Richardson Grove. Comment
  UC168948  Lonicera hispidula var. vacillans Joseph P. Tracy 1904-7-31 2132 Humboldt Eureka Northern Coast Region 0 Comment
  SD88513  Lonicera involucrata Darley F. Howe 1972-6-30 Humboldt Trinidad Comment
  CAS-BOT-BC241490  Lonicera involucrata var. ledebourii Alice Eastwood 1923-8-14 12306 Humboldt Samoa Comment
  HSC31737  Lonicera involucrata var. ledebourii Donald Spalinger 1974-4-20 15 Humboldt Across from 1756 Ridgewood Dr. 122 Comment
  HSC37832  Lonicera involucrata var. ledebourii Thomas W. Nelson, James Nelson 1976-3-11 2264 Humboldt Beside Eel River just N of W terminus of Singley Rd. Comment
  UC180196  Lonicera involucrata var. ledebourii Joseph P. Tracy 1914-7-12 4584 Humboldt near Hookton; Northern Coast Region, Humboldt Bay 0 Comment
  SEINET3523667 Image available Lotus A. A. Heller 1923-7-9 13778 Humboldt Near Blue Lake, 5 mi from Arcata Comment
  UC1223404  Lotus denticulatus Joseph P. Tracy 1934-6-23 13254 Humboldt near Blue Lake; Mad River 15 Comment
  UC33503  Lotus formosissimus Chesnut and Drew 1888-7-8 Humboldt near Campbell's Comment
  POM19457  Lotus micranthus Joseph P. Tracy 1917-5-30 4795 Humboldt Ocean Beach at mouth of Little River Comment
  UC726597  Lotus purshianus var. purshianus A. A. Heller 1923-7-9 Humboldt between Eureka and Fortuna Comment
  RSA90403  Lotus unifoliolatus F. W. Peirson 1926-7-12 7033 Humboldt Redwood Creek, Orick. Comment
  HSC39224  Lotus unifoliolatus var. unifoliolatus D. E. Anderson, J. P. Smith 1971-7-6 - 1319 Humboldt Rock wall near bridge over Supply Creek Comment
  HSC98994  Lotus unifoliolatus var. unifoliolatus Cara Witte 2008-8-16 1021 Humboldt Forest Service Road 5N10. 1/4 mile east of intersection with National Forest 1. 1359 Comment
  UC1223411  Lotus yollabolliensis Joseph P. Tracy 1941-8-28 17048 Humboldt near Blake Lookout (along summit South Fork Mountain); Northern Coast Ranges, South Fork Mountain 1706 Comment
  CAS-BOT-BC342558  Luina hypoleuca Carl B. Wolf 1937-8-9 9086 Humboldt Klamath River, 5 7/10 mi. above Orleans Comment
  JEPS85681  Lupinus Joseph P. Tracy Jul 16 1930-Jul 19 1930 9059 Humboldt along summit near Blake lookout, South Fork Mountain (South Fork Mountain); Northern Coast Ranges, South Fork Mountain 1737 Comment
  UC726370  Lupinus A. A. Heller 1923-7-8 13774 Humboldt near Fortuna; near Fortuna Comment
  UC1223277  Lupinus adsurgens Joseph P. Tracy 1933-7-26 12912 Humboldt Grouse Mountain, top of mountain 1630 Comment
  UC15888  Lupinus adsurgens Chesnut and Drew 1888-7-21 Humboldt South Fork Mt.; ; S of Fort Mt., Humboldt Co. Comment
  SEINET10490444  Lupinus adsurgens var. adsurgens Chestnut 1888-7-21 CHESTNUT s.n. Humboldt Type photo. W side south fork mountain. Comment
  UC503016  Lupinus albifrons Joseph P. Tracy 1929-4-28 8552 Humboldt Trinity River Valley at Willow Creek; Northern Coast Ranges, Trinity River Valley 152 Comment
  HSC96201  Lupinus albifrons var. collinus Wanda Naylor, Laurel Goldsmith 2005-6-24 13 Humboldt S of Grouse Mountain on NF1 1595 Comment
Read comments
Jan 16 2014
  CHSC19506  Lupinus arboreus Gary J. Sebbings 1970-4-18 64 Humboldt Along U.S. lol 1.0 mi north of Clam Beach exit. Comment
  CHSC19515  Lupinus arboreus Wendell Wood 1970-10-7 307 Humboldt McKinleyville. Clam Beach. 0 Comment
  CHSC68783  Lupinus arboreus Vernon Oswald 1997-6-5 8534 Humboldt North spit of Humboldt Bay, west side of New Navy Base Road. 1.0 mi south of Hwy. 255. 6 Comment
  HSC2122  Lupinus arboreus C. B. Wolf 1927-8-29 1209 Humboldt Devil's Gate, S of Cape Mendocino. Comment
  UCSB26618  Lupinus arboreus Havlik, Neil 1968-8-21 Humboldt Along U.S. Highway 101; west of Arcata Airport 6 Comment
  RSA183596  Lupinus arboreus var. arboreus C. F. Zeillemaker 1964-4-7 64 -A-006 Humboldt Three miles southwest of Samoa on Samoa Peninsula at U.S. Coast Guard Station. 3 Comment
  HSC104446  Lupinus bicolor Jeff Barrett 2009-5-8 Humboldt Samoa Peninsula, Fairhaven, along south side of Bay Street 5 Comment
  HSC45091  Lupinus bicolor R. Sutherland 1978-4-23 1 .23478 Humboldt Head of Kinsey (Fraser) Ridge 716 Comment
  JEPS82142  Lupinus constancei Thomas W. Nelson and Jane P. Nelson 1982-7-9 7079 Humboldt Mt. Lassic (Signal Peak) and saddle to e North Coast Ranges, Blockburg Quad., Mt. Lassic (Signal Peak; Blocksburg Quadrangle on Mt. Lassic (Signal Peak), Humboldt Co. 1767 Comment
  UC1223282  Lupinus formosus Joseph P. Tracy 1941-9-1 16997 Humboldt Blue Lake Comment
  HSC39639  Lupinus latifolius subsp. latifolius Thomas W. Nelson, Jane P. Nelson 1976-6-16 2745 Humboldt W of Alder Springs along 2S08 1494 Comment
  POM66233  Lupinus latifolius subsp. latifolius Marcus E. Jones 1924-4-25 s.n. Humboldt Garberville Comment
  JEPS65283  Lupinus latifolius var. latifolius Lincoln Constance 1934-5-29 714 Humboldt Upper Look Prairie; South Fork Eel River, Bull Creek Region 365 Comment
  UC774981  Lupinus luteolus Carl B. Wolf 1937-8-12 9211 Humboldt on road to Kneeland 20 mi n Bridgeville; North Coast Range 457 Comment
  UC865316  Lupinus luteolus C. L. Hitchcock and J. S. Martin 1939-7-11 5421 Humboldt 65 mi e Arcata; e of Arcata 457 Comment
  JEPS65420  Lupinus polyphyllus W. L. Jepson 1902-6-24 1927 Humboldt Eureka to Arcata; Eureka to Arcata Comment
  UC169007  Lupinus polyphyllus var. polyphyllus Joseph P. Tracy 1912-7-21 3784 Humboldt Alton; Northern Coast Region 30 Comment
  UC503019  Lupinus rivularis Joseph P. Tracy 1927-6-18 8189 Humboldt Capetown; Northern Coast Ranges, Capetown 304 Comment
  HSC14130  Luzula comosa Paul Shields May 1955 Humboldt HSC campus Comment
  HSC74171  Luzula comosa M. A. Baker 1980-7-23 3182 Humboldt Near Orleans Mtn. 1859 Comment
  HSC82212  Luzula comosa Thomas W. Nelson 1977-6-15 3439 Humboldt Along old road to ski area 1372 Comment
  HSC83998  Luzula comosa L. P. Janeway 1983-4-16 227 Humboldt Near the old Hwy. 299 on W side of Berry Summit. 823 Comment
  JEPS371  Lycopodiella inundata Joseph P. Tracy 1928-9-8 8504 Humboldt Big Lagoon Northern Coast Ranges (in peat bog) 6 Comment
  CHSC96729  Lycopodium clavatum Gordon Leppig 2004-2-3 2129 Humboldt The Pacific Lumber Company land. UTM Zone 10 0411778E, 4516248N. 300 Comment
Read comments
Jan 21 2014
  HSC23776  Lycopodium clavatum R. A. Vanbianchi 1971-9-24 90 Humboldt Near Fieldbrook. Comment
  UC1745149  Lycopodium clavatum Clare T. Golec 2000-7-13 Humboldt NE of Blue Lake 182 Comment
  JEPS63277  Lycopus americanus Joseph P. Tracy 1924-8-31 6853 Humboldt Klamath R. at mouth of Bluff Creek; Klamath R. 91 Comment
  CHSC96440  Lycopus uniflorus Gordon Leppig 1997-8-3 640 Humboldt Big Lagoon County Park, Big Lagoon Bog. UTM Zone 10 NAD 1927, 405321E 4557202N. 3 Comment
  HSC36094  Lysichiton americanus Michael L. Chase 1973-5-14 10 Humboldt Along Van Duzen at junction with Yager Creek 37 Comment
  UCD138081  Lysichiton americanus P. B. Kennedy 1926-3-17 s.n. Humboldt on Highway 5 miles south of Eureka. Comment
  JEPS45971  Lythrum hyssopifolia W. L. Jepson 1902-8-4 2146 Humboldt near Petrolia ( Expedition from Ukiah to the Hupa Indian Reservation) Comment
  UC1198466  Lythrum hyssopifolia Joseph P. Tracy 1920-8-15 5380 Humboldt Klamath River at Bluff Creek, Northern Coast Ranges Bluff Creek; Northern Coast Ranges, Klamath River, Bluff Creek 152 Comment
  HSC90841  Lythrum hyssopifolia Leonel Arguello 1989-6-10 Humboldt Lanphere-Christensen Dunes Preserve, 3 mi. W of Arcata, at the end of the Fernstrom-Root trail, along W border of the salt marsh. Comment
  CAS-BOT-BC342798  Madia elegans Carl B. Wolf 1927-8-28 1162 Humboldt On the Trinity River, 3 miles from Weitchpec Comment
  HSC96257  Madia elegans J. McIntire, S. Lyon 2005-6-10 9 Humboldt 1.7 mi. S of Hwy. 299 on Titlow Hill Rd. 1006 Comment
  RSA44409  Madia elegans subsp. elegans H. M. Pollard 1948-7-24 s.n. Humboldt Near Orleans Comment
  CAS-BOT-BC344356  Madia exigua Carl B. Wolf 1937-6-19 8910 Humboldt Van Duzen River, 3/10 mi. above Bridgeville 121 Comment
  CAS-BOT-BC94819  Madia gracilis R. C. Wenk; P. Hopkinson; M. Hammond; P. Brownsey 2008-6-6 834 Humboldt Humboldt Redwoods S.P., Look Prairie, 0.5 air mi. N of Mattole Rd., and 3 air mi. W of Hwy. 101 243 Comment
  HSC40133  Madia sativa Thomas W. Nelson 1976-8-10 3167 Humboldt Beside Hwy. 101 at the turnoff to Sunnybrae Comment
  CHSC2299  Maianthemum dilatatum M. Anthony 1960-5-14 Humboldt Arcata. Comment
  POM224223  Maianthemum dilatatum H. E. Parks 1932-05 4289 Humboldt Bishop Pine Lodge, Trinidad. Comment
  RSA246767  Maianthemum dilatatum Robert F. Thorne, Percy C. Everett 1965-8-7 35178 Humboldt Big Lagoon. In bog at S end of lagoon. 2 Comment
  RSA376906  Maianthemum dilatatum Bonnie C. Templeton 1964-6-13 10182 Humboldt Along old 101 Highway to Trinidad Comment
  SD53198  Maianthemum dilatatum Darley F. Howe 1962-5-21 Humboldt 35.5 miles north of Garberville, on #101. 60 Comment
  SEINET12047101  Maianthemum dilatatum F. H. Utech 1972-1 72 -014 Humboldt within city limits of Arcata, Humboldt State University Forest, W of campus 183 Comment
  HSC15641  Maianthemum racemosum subsp. amplexicaule Greg Bos 1965-5-15 281 Humboldt 4 mi. W of Berry Summit along Hwy. 299 671 Comment
  HSC15654  Maianthemum racemosum subsp. amplexicaule J. R. Eichelberger 1964-5-5 71 Humboldt 0.5 mi. E of entrance to Azalea State reserve Comment
  SEINET12050378  Maianthemum racemosum subsp. amplexicaule F. H. Utech 1988-1 88 -270 Humboldt 14 mi W of Bridgeville to Carlotta on CA 36, Mile Marker 11.40, Van Duzen Co. Park (Pamplin Grove) 50 Comment
  CAS-BOT-BC512772  Maianthemum stellatum Doris K. Kildale 1926-3-26 1648 Humboldt Old Fortuna Road 15 Comment
  RSA289951  Maianthemum stellatum Lincoln Constance 1934-6-2 783 Humboldt Bull Creek road to mouth of Bull Creek, and up Bull Creek. Bull Creek region, South Fork Eel River Comment
  HSC70360  Malacothrix floccifera Gail Newton 1980-6-7 141 Humboldt Near Brush Mtn. 1128 Comment
  UC204742  Malacothrix floccifera Joseph P. Tracy 1918-7-6 5049 Humboldt near Humboldt-Mendocino County line; Northern Coast Ranges, South Fork of Eel River 152 Comment
  UC14182  Malus fusca W. C. Blasdale 1896-6-1 Humboldt Freshwater Comment
  HSC100465  Marah Carl C. Marshall Apr 1886 55 Humboldt Everywhere. Comment
  JEPS42489  Marah oregana W. L. Jepson 1902-6-24 1931 Humboldt Blue Lake Comment
  RSA80535  Marah oregana Roxana S. Ferris 1951-9-5 12448 Humboldt Trinidad Head. Comment
  SDSU5797  Marah oregana D. F. Howe 1961-8-1 3116 Humboldt 3.3 miles north of Trinidad on #101. Comment
  UCR51832  Marah oregana J. D. Ackerman 1975-6-10 451 Humboldt Humboldt Bay, c. 1 mi. north of Samoa bridge turnoff from Samoa Blvd., south of Manila Comment
  UC1197432  Medicago lupulina Joseph P. Tracy 1915-7-25 4662 Humboldt Eureka Northern Coast Region 0 Comment
  HSC14975  Medicago polymorpha S. R. Johnson 1965-3-26 18 Humboldt 1 mi. S of Luffenholtz Beach Comment
  HSC79492  Medicago polymorpha Kenneth Clark 1980-6-15 700 Humboldt 300 yards SE of Dead Man's Gulch 8 Comment
  SEINET7296138 Image available Melica altissima Joseph P. Tracy 1937-1 15549 Humboldt Trinity Summit; On Ridge 2 miles east of Grove's Prairie. 1524 Comment
  POM161909  Melica californica var. nevadensis Joseph P. Tracy 1921-5-30 5491 Humboldt Kneeland Prairie. 762 Comment
  HSC102229  Melica geyeri var. geyeri M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-3 1150 Humboldt Patterson Meadows 1566 Comment
  HSC75447  Melica spectabilis J. O. Sawyer 1980-7-18 3606 Humboldt North Trinity Mountain Research Natural Area, north of Mill Creek Lake to Red Cap Hole. Comment
  UC1145128  Melica subulata Joseph P. Tracy 1942-6-2 17107 Humboldt Valley of South Yager Creek 762 Comment
  UC526917  Melica subulata Joseph P. Tracy 1933-7-26 12910 Humboldt Grouse Mountain; North Coast Ranges 1524 Comment
  BLMAR755  Melica subulata Jennifer Wheeler 2004-4-30 755 Humboldt King Range, Along Telegraph Ridge 670 Comment
  SEINET5737441 Image available Melilotus officinalis Lowell E. Urbatsch, Patricia B. Cox; Alan W. Lievens 1988-1 6112 Humboldt Collected in a waste area along Giuntoli Lane in Arcata. Adjacent to Eureka Sand and Gravel Company and across the road from T.P. Tire Service (1265 Giuntoli Lane).; Arcata Comment
  POM47605  Melissa officinalis Unspecified 1923-7-29 91 Humboldt Rohnerville. Damp flat. 15 Comment
  SEINET13946829 Image available Mentha arvensis Henry M. Pollard 1945-1 Humboldt Pond near Harley place, Orleans Comment
  UC1225833  Mentha canadensis Joseph P. Tracy 1941-8-17 16993 Humboldt borders of pond near Three Cabins (se of Butler Valley); se of Butler Valley 457 Comment
  CDA5714  Mentha pulegium D. G. Kelch 2007-7-25 7 .502 Humboldt Along Hwy 299 between Lord-Ellis Summit and Hwy 96. Comment
  HSC98868  Mentha pulegium Cara Witte 2008-8-5 991 Humboldt Along National Forest 1 on Kinsey Ridge. 1/2 north of intersection with Forest Service Road 4N06. 1291 Comment
  RSA12460  Mentha pulegium Carl B. Wolf 1934-6-30 5833 Humboldt 0.5 mile from Briceland on road to Garberville. 91 Comment
  RSA167435  Mentha spicata Joseph P. Tracy 1950-9-22 19370 Humboldt Klamath River near Slate Creek; below Orleans 8 miles. 122 Comment
  HSC38431  Mentzelia laevicaulis J. P. Smith 1976-10-30 8996 Humboldt Mad River, E of Essex Lane exit. Comment
  UC1223200  Microseris douglasii subsp. douglasii Joseph P. Tracy 1948-6-13 18057 Humboldt 3 mi w Harris Comment
  CAS-BOT-BC322686  Microseris laciniata M. S. Jussel 1931-5-2 s.n. Humboldt 6 miles from Garberville Comment
  HSC58383  Microseris nutans Terry Griswold 1979-7-25 10913 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon 1784 Comment
  UC1199449  Microseris nutans Joseph P. Tracy 1932-7-12 10485 Humboldt Head of Brett Hole Trinity Summit 1828 Comment
  UC582733  Microseris nutans Joseph P. Tracy 1930-7-16 8901 Humboldt near McKay Camp; South Fork Mountain 1676 Comment
  POM247189  Microseris nutans Joseph P. Tracy 1930-7-16 8900 Humboldt South Fork Mountain, near McKay Camp 1677 Comment
  POM193012  Microsteris gracilis subsp. gracilis H. E. Parks, Joseph P. Tracy 1930-5-25 0795 Humboldt Laribee Valley. 793 Comment
  HSC69814  Mimulus alsinoides Thomas W. Nelson, Jane P. Nelson 1978-5-25 3801 Humboldt Above E Fork of Willow Creek just upstream from S.R. 299 bridge 457 Comment
  UC175596  Mimulus arvensis Joseph P. Tracy 1912-6-9 3688 Humboldt Alton Northern Coast Region 30 Comment
  JEPS10486  Mimulus arvensis Joseph P. Tracy 1926-5-2 7435 Humboldt near South Fork; Trinity River Valley 182 Comment
  HSC72410  Mimulus aurantiacus var. aurantiacus J. P. Smith 1973-5-26 6829 Humboldt Scotia Bluffs along the Eel River near Rio Dell Comment
  JEPS87265  Mimulus aurantiacus var. aurantiacus David M. Thompson 1992-6-6 1115 Humboldt just n Miranda (0.1 mi s of bridge over Bridge Creek along Hwy 254 (parallels Hwy 101)) 100 Comment
  UC1063411  Mimulus aurantiacus var. aurantiacus H. L. Person 1932-7-23 Humboldt road e Korbel; Eureka Quadrangle Comment
  UC1193340  Mimulus aurantiacus var. aurantiacus K. Cuff 1950-10-9 126 Humboldt 1/2 mi ne Honeydew (Quad 28A4) 152 Comment
  JEPS10553  Mimulus breweri Joseph P. Tracy 1932-7-10 10375 Humboldt Corral Prairie Trinity Summit 1584 Comment
  UC147910  Mimulus breweri Joseph P. Tracy 1908-6 2844 Humboldt nw slope Buck Mountain; Northern Coast Ranges 1219 Comment
  HSC12696  Mimulus dentatus Jana Kattenhorn 1970-10-28 153 Humboldt Mad River at the mouth of Lindsey Creek. North Bank Rd. off Hwy. 299 Comment
  UC1196792  Mimulus douglasii Joseph P. Tracy 1927-4-10 7892 Humboldt near South Fork; Northern Coast Ranges, Trinity River Valley 182 Comment
  HSC103078  Mimulus guttatus Sydney Carothers 2014-6-12 11 Humboldt Six Rivers National Forest, Lassics Botanical Area, Red Lassic. Near upper pond and rustic camp site. 1706 Comment
  HSC97610  Mimulus guttatus Cara Witte 2007-6-4 199 Humboldt Cold Spring. 0.5 mile S of Titlow Hill. 1386 Comment
  HSC31742  Mimulus guttatus Donald Spalinger 1974-5-12 59 Humboldt Bald Hills Rd., 1.5 mi. E from junction with Hwy. 101 229 Comment
  JEPS25699  Mimulus guttatus P. C. Hutchison 1961-5-22 2033 Humboldt 1/2 mi above Somes Bar (Hiway 299 ca. 100 ft. from Siskiyou Co. line) Comment
  JEPS25044  Mimulus inodorus Doris Kildale Aug. 1925 Humboldt Trinity Summit Comment
  UC1196768  Mimulus inodorus Joseph P. Tracy 1939-8-5 16376 Humboldt Dinsmore's Van Duzen River 731 Comment
  HSC102582  Mimulus moschatus M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-29 1569 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1579 Comment
  UC582711  Mimulus nasutus Joseph P. Tracy 1923-5-20 6218 Humboldt Kneeland Prairie 762 Comment
  HSC48677  Mimulus tilingii Brad Klipfel 1973-7-31 252 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC71675  Minuartia douglasii M. A. Baker 1980-6-26 2392 Humboldt Near Sims Creek 610 Comment
  OBI19559  Minuartia douglasii Carl B. Wolf 1937-6-14 8822 Humboldt North Coast Range, Kneeland Prairie 823 Comment
  UC161040  Minuartia douglasii Ethel Tracy May 1905 Humboldt Harris Northern Coast Ranges 762 Comment
  UCD98275  Minuartia douglasii Joseph P. Tracy 1942-6-23 17225 Humboldt Trinity Summit; one mile west of Mud Springs. Comment
  HSC32136  Minuartia nuttallii subsp. gregaria D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5605 Humboldt Mt. Lassic and two smaller peaks to immediate E 1768 Comment
  UC1198867  Mitella caulescens Joseph P. Tracy 1937-7-2 15400 Humboldt Little Hors-Linto Creek Trinity Summit (head) 1371 Comment
  CAS-BOT-BC433009  Mitella diversifolia J. H. Thomas 1949-6-13 911 Humboldt Between Le Perron Flat and Whitey's Peak, along trail. East of town of Orleans. 1371 Comment
  HSC50941  Moehringia macrophylla G. L. Clifton, Overton 1979-6-3 3764 Humboldt Near Pine Mtn., close to the town of Forest Glen 1495 Comment
  HSC67209  Moehringia macrophylla Thomas W. Nelson, James Nelson 1980-6-10 5437 Humboldt Along E side of Red Mtn. 1372 Comment
  UC1223238  Moehringia macrophylla Joseph P. Tracy 1951-6-26 19558 Humboldt halfway between Snow Camp and Twin Lakes ((at Charley Preston's old gate near the road)); between Snow Camp and Twin Lakes Comment
  HSC97185  Moehringia macrophylla Benjamin Hart, Erin Lonergan 2007-6-13 9 Humboldt 1 mi. E of USFS Rd. NF1 on 5N04 1524 Comment
  UC229833  Mollugo verticillata Joseph P. Tracy 1921-10-16 5972 Humboldt near Willow Creek (Trinity River Valley); Northern Coast Ranges, Trinity River Valley 152 Comment
  HSC57942  Monardella glauca G. L. Clifton, Griswold 1979-7-31 11612 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1719 Comment
  HSC41256  Monardella odoratissima Brad Klipfel 1974-6-25 446 Humboldt Horse Mtn. Comment
  CAS-BOT-BC215570  Monardella odoratissima subsp. pallida Carl B. Wolf 1937-8-13 9269 Humboldt 12 mi. E. of Hoopa Valley on new road towards Trinity Summit, North Coast Range 1676 Comment
  UC1239678  Monardella odoratissima subsp. pallida Joseph P. Tracy 1932-7-12 10436 Humboldt Corral Prairie Trinity Summit 1584 Comment
  UC577400  Monardella purpurea Joseph P. Tracy 1926-6-20 7657 Humboldt Horse Mountain 1310 Comment
  HSC35703  Monardella sheltonii Thomas W. Nelson, B. Reinhardt 1975-7-30 2119 Humboldt Beside private road to Pilot Rock Comment
  RSA0022787  Monardella villosa subsp. subserrata Carl B. Wolf 1934-7-3 5923 Humboldt Weitchpec (junction of Klamath and Trinity Rivers). 200 yards west of school. 152 Comment
  UC177170  Monardella villosa subsp. villosa Joseph P. Tracy 1912-8-1 3961 Humboldt Opposite Buck Mountain; Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  UC2035935  Monardella villosa subsp. villosa C. Epling, Wm. Robison 1935-7-24 Humboldt Dyerville Comment
  UC718021  Monardella villosa subsp. villosa Carl B. Wolf 1934-7-3 5923 Humboldt Weitchpec junction of Klamath & Trinity Rivers, 200 yards west of School. 304 Comment
  RSA249710  Monotropa hypopitys R. F. Thorne, Percy C. Everett, K. Thorne 1965-8-5 35132 a Humboldt Wailaki Recreation Site. 610 Comment
  JEPS17205  Montia howellii Joseph P. Tracy 1921-4-24 5431 Humboldt South Fork of Eel River, Phillipsville Flat Eel River; Northern Coast Ranges, Phillipsville Flat, Eel River 91 Comment
  JEPS43276  Montia howellii J. P. Tracy 1909-5-2 2956 Humboldt Eureka Comment
  JEPS17216  Montia parvifolia Lincoln Constance 1934-5-31 744 Humboldt Bull Creek Flat, along Bull Creek (from w boundary of Park to Grasshopper Peak (Squaw Creek) road, n side of creek, South Fork Eel River); Bull Creek Region, South Fork Eel River, Bull Creek Comment
  CAS-BOT-BC445154  Montia parvifolia A. M. Vollmer; L. Beane 1951-6-11 142 Humboldt Along Van Duzen River, at Bridgeville Comment
  CAS-BOT-BC445156  Montia parvifolia Doris K. Kildale 1925-6-14 671 Humboldt Yager Creek near mouth Comment
  UC673005  Montia parvifolia Joseph P. Tracy 1933-5-20 12215 Humboldt s of Ferndale (Wild Cat Ridge); Wild Cat Ridge 304 Comment
  CDA36322  Muehlenbeckia complexa R. Robison 2011-6-3 Humboldt Trinidad State Beach, across road from Humboldt State Marine Research Center. 0 Comment
  HSC102098  Muhlenbergia filiformis M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 985 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  CAS-BOT-BC275347  Muhlenbergia mexicana Henry M. Pollard 1947-8-19 s.n. Humboldt Wilson Creek, near Orleans Comment
  UC1239641  Myosotis discolor Joseph P. Tracy 1920-6-6 5337 Humboldt along Freshwater Creek near Wrangletown; Northern Coast Ranges 30 Comment
  HSC34648  Myosotis sylvatica A. M. Montalvo 1975-4-9 201 Humboldt Arcata Community Forest about .25 mi. up Trail #3 46 Comment
  HSC35523  Myriophyllum aquaticum No Collector Humboldt W of Mckinleyville Comment
  HSC62986  Myriophyllum hippuroides David Wheeler 1979-4-21 76 Humboldt 14 mi. up Snow Camp Rd., 4 mi. past Ward Rd., in Lake Prairie Comment
  HSC77878  Myriophyllum hippuroides Scott White 1973-10-29 Humboldt Clam Beach pond Comment
  HSC56181  Navarretia divaricata G. L. Clifton, Griswold 1979-8-1 12097 Humboldt Near N Trinity Mtn., close to the town of Hoopa. 1798 Comment
  HSC56334  Navarretia divaricata Overton, Butler 1979-8-2 12710 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  UC908387  Navarretia divaricata Joseph P. Tracy 1930-7-23 9119 Humboldt Horse Mountain Northern Coast Ranges 1432 Comment
  UC582694  Navarretia intertexta Joseph P. Tracy 1937-6-26 15363 Humboldt Willow Creek Trinity River Valley 152 Comment
  POM65883  Navarretia pubescens Joseph P. Tracy 1916-6-20 4733 Humboldt Alder Point, Northern Coast Ranges 152 Comment
  RSA528862  Navarretia sinistra R. Spellenberg 1990-7-10 10238 Humboldt Extreme E edge county, 11 air mi. E of Burnt Ranch at Buck Flat, at junction of USFS road 5N01 and USFS road 1, 12 mi. S of Berry Summit (on Calif. Highway 299) on USFS 1 1433 Comment
  JEPS70472  Navarretia squarrosa Joseph P. Tracy 1921-8-21 5935 Humboldt near Willow Creek; Northern Coast Ranges, Trinity River Valley 152 Comment
  UC1198528  Navarretia squarrosa Joseph P. Tracy 1927-7-24 8293 Humboldt Upper Mattole 152 Comment
  UC908873  Navarretia squarrosa Joseph P. Tracy 1936-8-23 15166 Humboldt vicinity Carlotta 30 Comment
  UC198644  Navarretia squarrosa Joseph P. Tracy 1917-9-3 4857 Humboldt Jones Ranch, lower slopes of Grouse Mountain Northern Coast Ranges, Grouse Mountain 914 Comment
  JEPS70478  Navarretia tagetina W. L. Jepson 1932-7-24 16386 Humboldt above Eel Rock; Mail Ridge 762 Comment
  UC169029  Nemacladus capillaris Joseph P. Tracy 1908-6 2842 Humboldt nw slope Buck Mountain; Northern Coast Ranges 1219 Comment
  SEINET10840156  Nemacladus capillaris Tracy 1930-7-10 TRACY 8865 Humboldt Brannan Mountain 1219 Comment
  HSC13587  Nemophila menziesii Francis Winter 1960-5-7 Humboldt E end Arbor Camp Ridge 915 Comment
  UCR37590  Nemophila menziesii var. atomaria L. P. Janeway 1983-4-16 233 Humboldt Near the old Hwy 299 on W side of Berry Summit 823 Comment
  POM65369  Nemophila menziesii var. atomaria H. P. Chandler 1901-06 1276 Humboldt Hupa Mountains. Comment
  RSA244978  Nemophila menziesii var. atomaria D. E. Anderson 1965-4-24 3532 Humboldt Along Titlow Hill Road. Comment
  CAS-BOT-BC219406  Nemophila parviflora Alice Eastwood; John Thomas Howell 1937-6-23 4817 Humboldt 5 miles east of Bridgeville Comment
  HSC71030  Nemophila pedunculata Thomas W. Nelson 1977-4-20 3322 Humboldt Along FS Rd. 1N15 at bridge over Mad River 762 Comment
  JEPS1924  Nemophila pedunculata Joseph P. Tracy 1925-4-5 6957 Humboldt Lawrence Creek at crossing Kneeland Road Lawrence Creek at crossing of Kneeland Road 457 Comment
  HSC54573  Notholithocarpus densiflorus Overton, Butler 1979-7-24 9607 Humboldt Near Titlow Hill, close to the town of Willow Creek 1250 Comment
  HSC8077  Notholithocarpus densiflorus F. Sandborg, J. Sandborg 1968-7-19 58 Humboldt Bluff Creek near Notice Creek 793 Comment
  UCSB30602  Notholithocarpus densiflorus Edwards, David 1974-7-26 Humboldt On E. bank of Mad River, ca. at its junction with Puter Creek, ca. 2 mi. SW of Korbel 27 Comment
  HSC79504  Notholithocarpus densiflorus var. densiflorus Kenneth Clark 1980-6-14 692 Humboldt N Fork of Dead Man's Gulch; throughout Shelter Cove 61 Comment
  HSC37836  Notholithocarpus densiflorus var. echinoides Thomas W. Nelson, Jane P. Nelson 1976-2-21 2247 Humboldt Beside the Hoopa-Redwood Valley Rd. ca. 5 mi. W of Hoopa Comment
  HSC36066  Nuphar polysepala Wm. Henry 1973-5-12 Humboldt Clam Beach Lagoon, .5 mi. S of Little River Comment
  HSC37911  Nuttallanthus texanus Peter Sorensen 1976-6-4 Humboldt N Spit Comment
  UC1128079  Oemleria cerasiformis P. L. Johannsen 1933-5-17 76 Humboldt Limestairs; Trinity National Forest, China Flat Quad. 182 Comment
  SEINET11915945  Oemleria cerasiformis J. P. Tracy 1950-1 18618 Humboldt 2 mi W of Dinsmore's, Buck Mountain, lower foothills of its NW slope 762 Comment
  CAS-BOT-BC171604  Oenothera wolfii Carl B. Wolf 1937-9-9 9307 Humboldt Coast, 2 mi. so. of Cape Mendocino 6 Comment
  UC205159  Oreostemma alpigenum var. andersonii Joseph P. Tracy 1919-9-22 5278 Humboldt Trinity Summit Northern Coast Ranges 1889 Comment
  UC1197455  Orobanche fasciculata Joseph P. Tracy 1911-7-7 3222 Humboldt Northern Coast Ranges. Brannan Mountain, viz. ridge north of Willow Creek, between Willow and Campbell Creeks, near Summit. Comment
  HSC101965  Orogenia fusiformis M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-12 860 Humboldt Patterson Meadows 1555 Comment
  HSC53930  Orthocarpus cuspidatus subsp. cuspidatus Terry Griswold, Marvin Butler 1979-7-11 6947 Humboldt Near Snow Camp Mtn., close to the town of Willow Creek 1320 Comment
  HSC44558  Orthocarpus imbricatus Brad Klipfel 1973-7-15 177 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  UCD20405  Orthocarpus imbricatus Donald C. Hagar 1957-8-6 207 Humboldt 10 miles ENE of Hoopa, Jackson Hole. 1645 Comment
  HSC100677  Orthocarpus lithospermoides Carl C. Marshall Jun 1887 406 Humboldt Spruce Grove. Comment
  HSC74741  Osmorhiza berteroi Gail Newton 1981-7-24 2323 Humboldt Near Bug Creek Butte 1417 Comment
  BLMAR209  Osmorhiza berteroi Jennifer Anthony-Wheeler 1996-7-9 209 Humboldt Pilot ridge, growing throughout shady understory Comment
  UCR45439  Osmorhiza chilensis Kenneth Clark 1980-4-18 576 Humboldt North Coast, Shelter Cove, on access trail to Dead Man's Gulch 52 Comment
  HSC100688  Osmorhiza nuda Carl C. Marshall May 1886 193 Humboldt Waste grounds. Comment
  JEPS14233  Osmorhiza occidentalis Joseph P. Tracy 1935-7-24 14189 Humboldt near Ranger Station; Trinity Summit 1828 Comment
  UC1197132  Osmorhiza occidentalis Joseph P. Tracy 1932-7-11 10420 Humboldt Corral Prairie Trinity Summit 1584 Comment
  UC1197419  Oxalis oregana Joseph P. Tracy 1906-5-6 2440 Humboldt near Hydesville; Northern Coast Ranges 60 Comment
  UC17222  Oxalis oregana Harley P. Chandler May, 1901 1160 Humboldt Humboldt Bay North Coast Ranges 30 Comment
  UCD110986  Oxalis oregana K. Twitchell 1996-5-11 24 Humboldt Crannell, coastal cliffs along old Highway 101 at Moonstone beach access. 36 Comment
  UCR84792  Oxalis oregana Kathy Harper 1992-5-14 s.n. Humboldt State Hwy 36 c. 5 mi. east of U.S. Hwy 101, and 1 mi. east of Carlotta 61 Comment
  JEPS43153  Oxalis oregana Lincoln Constance 1934-5-23 605 Humboldt se slope mt.above Look Prairie; Bull Creek Region, South Fork Eel River Comment
  RSA254427  Oxalis oregana Larry L. Norris 1975-4-10 2310 Humboldt Samuel P. Taylor State Park Comment
  HSC95581  Oxalis pes-caprae Andrea Pickart 2002-3-14 1 Humboldt Samoa Dunes, BLM Recreation Area 15 Comment
  UCD134738  Packera bolanderi var. bolanderi K. Esau 1934-5-8 s.n. Humboldt Redwood Highway, near Scotia. Comment
  HSC10489  Panicum acuminatum var. fasciculatum J. P. Tracy 1931-5-17 9427 Humboldt Trinity River Valley, at Willow Creek. Comment
  HSC32567  Panicum acuminatum var. fasciculatum Thomas W. Nelson 1973-9-3 1120 Humboldt McKeown Ranch N of Dinsmore Comment
Read comments
Jul 8 2015
  UC1145036  Panicum oligosanthes var. scribnerianum Joseph P. Tracy 1939-4-29 16246 Humboldt 8 mi below Orleans; Klamath River near Slate Creek 121 Comment
  UC1478544  Parentucellia viscosa Robert F. Thorne 1974-7-29 45075 Humboldt Samoa Dunes Comment
  HSC26880  Parentucellia viscosa Clifton Raymond Chesbrough 1973-6-19 87 Humboldt 0.5 mi. S of Trinidad along the coast Comment
  CAS-BOT-BC259728  Paspalum distichum Joseph P. Tracy 1934-7-30 13498 Humboldt Dry Lagoon, on coast near Stone Lagoon 3 Comment
  HSC22030  Paxistima myrsinites R. W. Spjut 1971-5-22 1922 Humboldt 1/4 mi. NW of Johnson Prairie, 8 mi. W of Willow Creek 1067 Comment
  UC169889  Paxistima myrsinites Joseph Burtt Davy and Walter C. Blasdale 1899-6-19 5655 Humboldt Hoopa Mt. Comment
  UC1239629  Pectocarya pusilla Joseph P. Tracy 1926-5-2 7428 Humboldt near South Fork; Northern Coast Ranges, Trinity River Valley 182 Comment
  HSC99452  Pedicularis groenlandica K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-7 102 Humboldt Near North Trinity Mtn, 11. 9 mi east of Hoopa on Big Hill Rd (8N01), at Box Camp, Six Rivers National Forest. 1372 Comment
  UC179970  Pedicularis groenlandica Joseph P. Tracy 1914-7-4 4533 Humboldt High Prairie on Bald Mountain; Northern Coast Ranges 1066 Comment
  RSA20777  Pedicularis racemosa Carl B. Wolf 1937-8-13 9241 Humboldt North Coast Range, 8 mi E of Hoopa Valley on New Road towards Trinity summit. 1220 Comment
  HSC50938  Pedicularis semibarbata G. L. Clifton, Walter Overton 1979-6-3 3760 Humboldt Near Pine Mtn., close to the town of Forest Glen 1495 Comment
  CAS-BOT-BC67769  Pellaea andromedifolia Doris K. Kildale 1926-4-30 1921 Humboldt Briceland Bridge, 1/2 mile west of Garbersville 114 Comment
  UC211497  Pellaea brachyptera Chesnut and Drew 1888-7-21 Humboldt Pilot Ridge Comment
  UC218629  Pellaea mucronata var. mucronata Joseph P. Tracy 1921-5-30 5494 Humboldt Kneeland Prairie; Northern Coast Ranges 762 Comment
  HSC48023  Penstemon anguineus Brad Klipfel 1973-7-31 259 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC55832  Penstemon anguineus G. L. Clifton, Terry Griswold 1979-7-25 10748 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1814 Comment
  UC1245390  Penstemon anguineus Joseph T. Gregory 1935-7-23 722 Humboldt lower end of Brett Hole Trinity Summit, lower end of Brett Hole 1584 Comment
  RSA21441  Penstemon anguineus Carl B. Wolf 1937-8-12 9205 Humboldt North Coast Range, South Fork Mt., Trinity Co line. 1585 Comment
  HSC55839  Penstemon deustus G. L. Clifton, Terry Griswold 1979-7-25 10786 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1814 Comment
  UC577396  Penstemon laetus var. sagittatus Joseph P. Tracy 1935-7-14 14073 Humboldt Grouse Mountain North Coast Ranges, Grouse Mountain 1524 Comment
  HSC35942  Penstemon rattanii Thomas W. Nelson, Jane Nelson, James Nelson 1975-7-15 2034 Humboldt French Camp, Bald Hills. Comment
  HSC70388  Pentagramma triangularis Gail Newton 1980-6-7 143 Humboldt Near Brush Mtn. 1128 Comment
  UCD137780  Pentagramma triangularis K. Esau 1934-5-8 s.n. Humboldt Above Fort Seward. 457 Comment
  UC1197318  Perideridia gairdneri subsp. borealis Joseph P. Tracy 1948-9-5 18167 Humboldt ne Hawkins Bar; Trinity Summit Range, Happy Camp Mountain 1280 Comment
  UC198598  Perideridia howellii Joseph P. Tracy 1917-9-1 4832 Humboldt Murphy Meadow Northern Coast Ranges, Bald Mountain 1066 Comment
  HSC38073  Perideridia howellii Thomas W. Nelson, James Nelson 1976-5-30 2634 Humboldt McKeowan Ranch N of Dinsmore along road to Anderson's Ford 915 Comment
  HSC75963  Perideridia kelloggii Overton, Butler 1979-8-2 12586 Humboldt Near Bret Hole, close to the town of Hoopa 1554 Comment
  HSC99093  Perideridia oregana Cara Witte 2007-7-8 447 Humboldt Board Camp Mountain. Trail 4E28. 1496 Comment
  HSC98755  Perideridia oregana Cara Witte 2007-7-27 602 Humboldt Forest Service Road 4N32. 1.4 miles north of intersection with Forest Service Road 4N32B. 1560 Comment
  UC1197119  Perideridia parishii subsp. latifolia E. Ethel Tracy 1919-8-1 Humboldt Trinity Summit Northern Coast Ranges 1524 Comment
  CHSC79802  Persicaria capitata Gordon Leppig; Sylvia Leppig 2000-4-16 1298 Humboldt Arcata. Corner 17th and J St. base of curb. UTM zone 10, N4525 E408. 60 Comment
  CAS-BOT-BC419193  Persicaria maculosa Carl D. Duncan 1920-9-22 s.n. Humboldt Trinity River, Hoopa Valley Comment
  HSC12557  Persicaria maculosa D. La Conte 1970-8-11 15 Humboldt Along side of creek intersecting Campton Rd. Comment
  HSC25526  Persicaria maculosa Norman Dennis 1965-6-8 109 Humboldt Samoa Peninsula along W side of Humboldt Bay Comment
  SEINET3926008  Persicaria maculosa Norman Dennis 1965-6-8 109 Humboldt Samoa Peninsula along the west side of Humboldt Bay.; 0 Comment
  HSC6053  Petasites frigidus var. palmatus V. G. Vieira 1963-3-30 38 Humboldt Mad River Comment
  HSC32486  Petrorhagia dubia Bonnie Prange 1974-5-18 Humboldt Off Hwy. 299 at China Slide. Comment
  HSC37415  Phacelia bolanderi Gary S. Lester, Roger L. Yearout, Judith G. Dickson 1974-7-24 517 Humboldt Along Lost Man Creek. 38 Comment
  RSA30617  Phacelia bolanderi Lincoln Constance, R. C. Rollins 1942-5-20 2999 Humboldt Eel River at Dyerville bridge, two miles north of Weott. 49 Comment
  UC1199098  Phacelia bolanderi Joseph P. Tracy 1904-7-17 2121 Humboldt near Hydesville; Northern Coast Region 60 Comment
  SEINET12335255  Phacelia bolanderi F. H. Utech, Sato, T.; Ohara, M. 1990-1 90 -304 Humboldt Six Rivers National Forest, 0.5 mi S of CA 199 on French Hill Rd (USFS Rd 411) 150 Comment
  UCR80262  Phacelia corymbosa Thomas W. Nelson, Jane P. Nelson 1977-7-4 3576 Humboldt Head of N Fork of Conley Creek 520 Comment
  CDA40414  Phacelia heterophylla subsp. virgata T. C. Fuller 1958-6-17 s.n. Humboldt Wildcat Ridge near Bunker Hill. 0 Comment
  UC1222897  Phacelia heterophylla subsp. virgata Joseph P. Tracy 1951-6-24 19539 Humboldt between serpentine rockpile and Ashfield Butte; Kneeland Prairie 762 Comment
  UC562573  Phacelia heterophylla subsp. virgata Joseph P. Tracy 1926-6-20 7661 Humboldt lower slopes Horse Mt. 914 Comment
  HSC57205  Phacelia mutabilis Griswold, Butler 1979-7-12 7160 Humboldt Near Groves Prairie, close to the town of Willow Creek. 1256 Comment
  CAS-BOT-BC258866  Phalaris aquatica Joseph P. Tracy 1934-6-21 13241 Humboldt Around Humboldt Bay. Along highway across Salmon Creek flats 6 Comment
  CDA20501  Phalaris arundinacea P. Haggard 2004-7-8 PDR 1285917 Humboldt North Coast; Alder Grove Park near pond. 0 Comment
  UCD88769  Phalaris californica Joseph P. Tracy 1951-7-27 19630 Humboldt At Englewood, near Redcrest. Comment
  UC1198554  Phlox adsurgens Joseph P. Tracy 1947-7-5 17808 Humboldt near Box Camp; Trinity Summit 1524 Comment
  UC52379  Phlox diffusa Joseph Burtt Davy and Walter C. Blasdale 1899-5 5790 Humboldt Trinity Summit Comment
  CAS-BOT-BC73441  Picea sitchensis William R. Dudley 1899-6-28 s.n. Humboldt Humboldt Bay peninsula opposite Eureka. Comment
  CAS-BOT-BC73444  Picea sitchensis Carl B. Wolf 1930-10-28 1037 Humboldt 5 miles south of Ferndale on road to Petrolia. 152 Comment
  SBBG56401  Picea sitchensis J. W. Howe 1938-3-31 Humboldt near Arcata Comment
  SJSU142  Picea sitchensis Emily D. Smith 1934-8-22 Humboldt between Fortuna & Eureka Comment
  SJSU2223  Picea sitchensis H. L. Buckalew 1959-7-10 Humboldt Prairie Creek Redwoods State Park, northweastern Humbollt County Comment
  UC1174871  Picea sitchensis P. C. Everett and E. K. Balls 1959-10-25 Humboldt 3 mi s from Ferndale (on Old Coast Road to Capetown) 426 Comment
  UC527820  Picea sitchensis Ira L. Wiggins 1932-6-28 5870 Humboldt hillside just n Little River Comment
  CAS-BOT-BC78287  Pinus attenuata Henry M. Pollard 1947-9-1 s.n. Humboldt Ridge approaching Somes Peak, Orleans region 1219 Comment
  HSC31517  Pinus contorta Steve Selva, Roger Jensen 1974-8-28 92 Humboldt Approx. 5 mi. S of Arcata on the Samoa Peninsula Comment
  UCD134473  Pinus contorta H. E. Parks 1931-5-1 s.n. Humboldt Samoa. Comment
  POM319583  Pinus contorta var. contorta Patricia Wilder 1968-8-21 4408 Humboldt Northern coastal arm of Humboldt Bay, ca. 1 mile SW of Samoa, in sand dunes. 15 Comment
  UC63996  Pinus lambertiana Mrs. M. H. Manning 1901-1 Humboldt 5 mi from Hupa (Redwood trail) Comment
  CAS-BOT-BC78978  Pinus muricata William R. Dudley 1899-6-28 s.n. Humboldt the Humboldt Bay [peninsula] Peninsula opposite Eureka (near sea-level) Comment
  HSC98598  Pinus ponderosa var. ponderosa Cara Witte 2008-7-10 859 Humboldt Along National Forest 1 on Kinsey Ridge. 1/4 mile from Forest Service Road 4N06. 1241 Comment
  JEPS64429  Piperia elegans W. L. Jepson 1932-7-25 16399 Humboldt Bull Creek South Fork Eel River Comment
  UC1326262  Piperia elongata Milo S. Baker 1947-8-11 11946 Humboldt perhaps 10 mi e Willow (Arcata-Weaverville Hwy) Comment
  HSC81667  Plagiobothrys bracteatus Thomas W. Nelson, Jane P. Nelson 1980-7-15 6069 Humboldt Old logging rds. SE of Lundbar Hills 30 Comment
  UC525608  Plagiobothrys bracteatus Joseph P. Tracy 1927-5-14 8029 Humboldt moist low place at Willow Creek; Northern Coast Ranges, Trinity River Valley 152 Comment
  UC1222212  Plagiobothrys reticulatus Joseph P. Tracy 1951-6-24 19536 Humboldt Kneeland Prairie 762 Comment
  UC582615  Plagiobothrys reticulatus Joseph P. Tracy 1937-6-20 15335 Humboldt ten mi up stream from mouth Bear River 152 Comment
  JEPS60971  Plagiobothrys reticulatus var. reticulatus Joseph P. Tracy 1938-6-17 15963 Humboldt s point of Cape; Cape Mendocino 3 Comment
  UC1222196  Plagiobothrys trachycarpus Joseph P. Tracy 1948-5-31 17987 Humboldt Robertson's Ranch halfway between Garberville and Harris; Robertson's Ranch 609 Comment
  JEPS14285  Plantago erecta J. P. Tracy 1919-4-27 5133 Humboldt opposite Eureka (Ocean Beach); Samoa Comment
  JEPS6423  Plantago erecta Joseph P. Tracy 1932-5-10 9945 Humboldt near Petrolia; Northern Coast Ranges, Mattole Valley 60 Comment
  UCD124424  Plantago erecta Linda M. Barker 1976-4-30 1397 Humboldt Lanphere-Christensen Dunes, 3 miles west of Arcata. Comment
  CHSC31323  Plantago lanceolata Mark Stopher 1980-6-4 90 Humboldt Along Elk River near Rte 101 bridge. 1 Comment
  UCD124617  Plantago lanceolata Gary Wallace 1966-9-12 706 Humboldt East of Arcata near Willow Creek along Hwy 299. Comment
  HSC16852  Plantago major Paul Shields Jun 1955 Humboldt 1 mi. N of Weott Comment
  HSC12018  Plantago major Wilbur Peterson 1970-10-28 93 Humboldt 1 mi. W of Blue Lake near R/R crossing Comment
  HSC71375  Plantago major J. P. Smith 1971-10-9 5022 Humboldt Banks and flood plain of the Mad River above the fish hatchery. Comment
  HSC37954  Plantago maritima Peter Sorensen 1976-6-2 Humboldt Woodley Island Comment
  HSC71216  Plantago maritima Thomas W. Nelson, Doris K. Niles 1979-5-19 4692 Humboldt Tidal marsh at mouth of Eel River, Crab Park, N of County Park. Comment
  HSC90480  Plantago maritima Jean Hanson 1981-5-10 136 Humboldt Indian Island, Humboldt Bay, city of Eureka, W end of island Comment
  BLMAR322  Plantago subnuda Jennifer Wheeler 2002-8-9 322 Humboldt Lost Coast Headland, Brackish creek edge of south side Guthrie creek 3 Comment
  SEINET8364946  Plantago subnuda Unknown 1954-8-10 4760 Humboldt roadside ditch along U.S. Highway 101, 0.4 mile south of south boundary marker for Dry Lagoon Beach. Comment
  HSC57692  Platanthera dilatata var. leucostachys G. L. Clifton, Griswold 1979-7-25 10917 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1784 Comment
  UCD138980  Platanthera dilatata var. leucostachys R. S. Woglum 1937-8-29 2037 -a Humboldt State Park grounds south of Trinidad. Comment
  HSC99365  Platanthera sparsiflora K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-6-24 14 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  HSC103985  Platystemon californicus E. R. Fyer 2015-3-19 15 Humboldt Samoa; along side of New Navy Base Rd 8 Comment
  HSC16803  Platystemon californicus J. Wendell Howe 1934-6-27 1291 Humboldt Samoa Comment
  JEPS587  Platystemon californicus Lincoln Constance 1934-6-19 913 Humboldt near summit Grasshopper Peak (Bull Creek Region); South Fork Eel River, , Grasshopper Peak 914 Comment
  UC502932  Platystemon californicus Joseph P. Tracy 1932-6-26 10266 Humboldt Valley of South Yager Creek; Northern Coast Ranges, Valley of South Yager Creek 762 Comment
  CAS-BOT-BC91636  Platystemon californicus Joseph P. Tracy 1932-6-26 10266 Humboldt Northern Coast Region.. Valley of South Yager Creek. 762 Comment
  CAS-BOT-BC91643  Platystemon californicus Mark Bransom; Daniel Brown; Ron Hildebrandt; Nina Meiselman 1986-4-19 10 Humboldt Across Route 299 from White's Bar picnic area. 0.25 mile up roadbank. Comment
  UC169026  Plectritis brachystemon J. P. Tracy 1908-7-9 2833 Humboldt Buck Mountain 1219 Comment
  UC602508  Plectritis brachystemon Joseph P. Tracy 1933-5-20 12250 Humboldt Northern Coast Ranges, Mattole Valley Mattole Valley; Northern Coast Ranges, Mattole Valley 60 Comment
  UC1541512  Plectritis ciliosa H. Parks and J. Tracy 1930-5-25 860 Humboldt Laribee Valley 762 Comment
  RSA167306  Pleuropogon refractus Joseph P. Tracy 1951-6-26 19560 Humboldt Halfway between Snow Camp and Twin Lakes (at Charley Preston's old gate near the road) Comment
  RSA336495  Pleuropogon refractus Paul But 1975-4-1 P 12 Humboldt Along Jacoby Creek Road, Jacoby Creek, about 3 miles N of Eureka Comment
  SEINET200752  Pneumonanthe oregana J. P. Tracy 1904-8-7 2140 Humboldt Immediate vicinity of Eureka. 0 Comment
  SEINET200845  Poa annua J. P. Tracy 1914-7-5 4548 Humboldt Bald Mtn between High Prairie and Snow Camp 1219 Comment
  HSC10638  Poa bolanderi J. P. Tracy 1932-7-12 10464 Humboldt Trinity Summit, head of Brett Hole. 1829 Comment
  SEINET200840 Image available Poa bolanderi Doris Kildale Humboldt Northern Coast Range; Trinity Summit. 1524 Comment
  CAS-BOT-BC255122  Poa confinis Joseph P. Tracy 1927-4-24 7947 Humboldt Eureka, near bay shore 9 Comment
  SEINET200574 Image available Poa kelloggii Joseph P. Tracy 1911-6-4 3219 Humboldt Along Little River, 5 miles from the coast. 122 Comment
  UC1026388  Poa kelloggii John Thomas Howell 1954-4-24 29151 Humboldt Bull Creek Flat Comment
  CAS-BOT-BC254278  Poa macrantha David D. Keck; J. Clausen 1935-6-16 3382 Humboldt Mouth of Little River Comment
  OBI22137  Poa macrantha Carl B. Wolf 1937-6-18 8904 Humboldt Centerville Beach Comment
  SEINET183546 Image available Poa macrantha Bassett Maguire, Ruth Maguire; C. B. Maguire 1934-6-9 15073 Humboldt Clam Beach 15 miles north of Eureka Comment
  CAS-BOT-BC235983  Poa secunda subsp. secunda Doris Kildale Gillespie 1931-6-7 10640 Humboldt South Fork Mountain, Blake Lookout 1726 Comment
  HSC102191  Poa secunda subsp. secunda M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-4 1105 Humboldt Andy's Camp 1564 Comment
  UC1145122  Poa secunda subsp. secunda Joseph P. Tracy 1942-6-2 17109 Humboldt valley of South Yager Creek 762 Comment
  UC525659  Poa secunda subsp. secunda Joseph P. Tracy Jul 16 1930-Jul 19 1930 9053 Humboldt near Blake lookout South Fork Mountain; Northern Coast Ranges 1737 Comment
  UCD92045  Poa secunda subsp. secunda Joseph P. Tracy 1936-5-29 14822 Humboldt French Camp Ridge. 1066 Comment
  UC1145117  Poa trivialis Joseph P. Tracy 1937-6-6 15330 Humboldt Ferndale 15 Comment
  UC277172  Poa trivialis Joseph P. Tracy 1921-4-24 5451 Humboldt Phillipsville Flat, S Fork of Eel River Phillipsville Flat; Northern Coast Ranges 91 Comment
  UC187225  Poa unilateralis Joseph P. Tracy 1910-4-24 3124 Humboldt Ocean Beach; Northern Coast Region, Humboldt Bay Comment
  UC1222708  Polemonium carneum Joseph P. Tracy 1950-6-8 18736 Humboldt Bear River Ridge 609 Comment
  CDA36977  Polycarpon tetraphyllum R. Robison Humboldt Humboldt Lagoons State Park, south of Stone Lagoon day use parking area. 0 Comment
  UC450153  Polygala californica Joseph Burtt Davy and Walter C. Blasdale 1899-6-11 5413 Humboldt Hubbard's Station to Elk Prairie; North Coast Ranges, Hubbard's Station, Elk Prairie Comment
  UC35075  Polygala cornuta var. cornuta Chesnut and Drew 1888-7-28 Humboldt Grouse Creek Comment
  HSC56170  Polygonum douglasii G. L. Clifton, Griswold 1979-8-1 12063 Humboldt Near N Trinity Mtn., close to the town of Hoopa. 1798 Comment
  UCD100265  Polygonum douglasii Joseph P. Tracy 1947-7-9 17835 Humboldt Horse Mountain. 1432 Comment
  UC672964  Polygonum douglasii subsp. douglasii Joseph P. Tracy 1930-6-21 8779 Humboldt Larrabee Valley 731 Comment
  CAS-BOT-BC418615  Polygonum majus Alice Eastwood 1921-7-21 10668 Humboldt Van Duzen River Comment
  CAS-BOT-BC109180  Polygonum paronychia Joseph P. Tracy 1911-5-30 3200 Humboldt Region about Humboldt Bay. At Bucksport. 152 Comment
  UC1198077  Polygonum sachalinense Joseph P. Tracy 1942-9-20 17319 Humboldt along hwy near mouth of Elk River 6 Comment
  RSA139174  Polygonum sachalinense T. C. Fuller 1960-8-25 4973 Humboldt W Hwy 101 0.25 mile N of Humboldt Hill Road, Eureka Comment
  UC249779  Polypodium Joseph P. Tracy 1924-3-9 6608 Humboldt Kneeland Prairie; Northern Coast Ranges 762 Comment
  UC218626  Polypodium Joseph P. Tracy 1918-4-7 4865 Humboldt mouth of Little River; Northern Coast Ranges 15 Comment
  CAS-BOT-BC71921  Polypodium californicum Donald Branscomb 1959-2-1 s.n. Humboldt Trinidad Comment
  SEINET200791 Image available Polypodium glycyrrhiza Joseph P. Tracy 1914-5-14 4429 Humboldt Fort Seward 122 Comment
  CAS-BOT-BC76842  Polypodium glycyrrhiza Ira L. Wiggins 1957-6-20 14134 Humboldt Forest, east side of highway, Trinidad. Comment
  CAS-BOT-BC76843  Polypodium glycyrrhiza Carl D. Duncan 1920-9-22 s.n. Humboldt Supply Creek, Hoopa Comment
  UC955491  Polypodium glycyrrhiza Mrs. Carlotta C. Hall 1924-8-9 234 Humboldt Wilder Ranch near Carlotta 91 Comment
  HSC89486  Polypodium scouleri P. A. Daly 1986-3-12 68 Humboldt Trinidad Head, along trail 61 Comment
  UC1472770  Polypodium scouleri Mrs. Carlotta C. Hall 1924-8-10 233 Humboldt 10 mi above Carlotta (along Van Duzen River, on rd. to Redding) Comment
  CAS-BOT-BC232595  Polypogon monspeliensis Henry M. Pollard 1948-7-21 s.n. Humboldt Bank of Klamath River near Orleans Comment
  HSC91882  Polypogon monspeliensis E. Mackey 1986-5-13 Humboldt Patrick's Point State Park. By Wedding Rock. Comment
  UC1145086  Polypogon monspeliensis Joseph P. Tracy 1938-7-11 16049 Humboldt near Samoa; Humboldt Bay, near Samoa 6 Comment
  HSC73537  Polystichum imbricans Gail Newton 1980-7-14 1498 Humboldt Near Last Chance Ridge. 1219 Comment
  HSC41301  Polystichum munitum Brad Klipfel 1974-7-27 500 Humboldt Horse Mtn. Comment
  HSC93265  Polystichum munitum Gordon Leppig 1998-3-11 716 Humboldt Redwood Park, near Jolly Giant Cr. 91 Comment
  RSA44515  Polystichum munitum Henry M. Pollard 1947-8-28 s.n. Humboldt Perch Creek Canyon, Mount Orleans Comment
  UC812661  Polystichum munitum George Neville Jones 1926-3-22 8671 Humboldt near Garberville Comment
  UC922660  Polystichum munitum Annie M. Alexander and Louise Kellogg 1948-9-3 5574 Humboldt above Trinity River Rd Hoopa Reservation Comment
  HSC98080  Polystichum scopulinum Cara Witte 2007-7-10 469 Humboldt Horse Mountain Botanical Area. Forest Servie Road 6N38 1349 Comment
  HSC98644  Populus trichocarpa Cara Witte 2007-7-26 598 Humboldt Board Camp Mountain. Forest Service Road 4N38. 1366 Comment
  UC176692  Populus trichocarpa Joseph P. Tracy 1913-6-22 4261 A Humboldt opposite Buck Mountain (Dinsmore's Ranch); Northern Coast Ranges, valley of Van Duzen River 762 Comment
  UC1103512  Potamogeton foliosus Joseph P. Tracy Humboldt Blue Slide on Van Duzen River 91 Comment
  HSC45347  Potamogeton natans R. York 1978-4-8 125 Humboldt Between Arcata and Eureka along Hwy. 101 0 Comment
  CAS-BOT-BC454064  Potamogeton pusillus subsp. pusillus Henry M. Pollard 1944-9-1 s.n. Humboldt Near Orleans Comment
  CAS-BOT-BC454066  Potamogeton pusillus subsp. pusillus S. K. Harris 1938-9-12 s.n. Humboldt Backwater of Eel River, near Fernbridge Comment
  HSC36301  Potamogeton richardsonii Camille Cornish 1973-10-10 5 Humboldt Edge of Freshwater Lagoon Comment
  HSC12699  Potentilla anserina subsp. pacifica Jana Kattenhorn 1970-10-7 12 Humboldt McKinleyville Dunes at end of Murray Rd. Comment
  HSC60412  Potentilla anserina subsp. pacifica J. P. Smith 1970-6-7 3807 Humboldt 0.6 mi. N of Luffenholtz Beach, along Hwy. 101, near Trinidad. Comment
  UC154224  Potentilla anserina subsp. pacifica J. P. Tracy 1901-5-30 1112 Humboldt immediate vicinity Eureka; immediate vicinity of Eureka 0 Comment
  HSC18732  Potentilla anserina subsp. pacifica D. E. Anderson 1961-9-9 1782 Humboldt Along Hwy. 101 Comment
  UCSB25141  Potentilla anserina subsp. pacifica Keefe, Joseph 1967-7-8 Humboldt South edge of Big Lagoon, 20 miles north of Eureka. 1 Comment
  HSC98969  Potentilla glandulosa subsp. reflexa Cara Witte 2007-6-27 364 Humboldt Forest Service Road 5N04. Near Grouse Mountain. Approximately 1/4 mile east of spring. 1583 Comment
  UC492177  Potentilla gracilis Joseph P. Tracy 1932-7-10 10387 Humboldt wet meadow at Corral Prairie (Trinity Summit); Klamath Mountains, Trinity Summit 1524 Comment
  CAS-BOT-BC158491  Potentilla gracilis var. gracilis Alice Eastwood; John Thomas Howell 1937-6-23 4849 Humboldt Kneeland Comment
  UCD139805  Prosartes hookeri H. P. Olmo 1931-6-8 s.n. Humboldt near Orich. Comment
  CAS-BOT-BC517384  Prosartes smithii Doris K. Kildale 1927-3-20 2927 Humboldt South Fork of Eel River Comment
  HSC15482  Prosartes smithii D. E. Anderson 1961-8-11 1737 Humboldt E of Humboldt State College campus. 30 Comment
  HSC48828  Prunus emarginata Brad Klipfel, J. P. Smith, J. O. Sawyer 1973-5-27 42 Humboldt Grogan's Hole near N Trinity Mtn. 1829 Comment
  UC492200  Prunus emarginata Joseph P. Tracy 1932-7-15 10603 Humboldt Ridges e of Corral Prairie (Trintiy Summit, Klamath Mountains); Klamath Mountains, Trintiy Summit 1828 Comment
  RSA46894  Prunus virginiana var. demissa Doris K. Kildale 1927-5-20 3240 Humboldt Bug Creek. Comment
  UC1198780  Prunus virginiana var. demissa Joseph P. Tracy 1926-10-14 7814 Humboldt near the South Fork (Trinity River Valley); Northern Coast Ranges, Trinity River Valley 182 Comment
  HSC5685  Pseudognaphalium californicum J. P. Tracy 1937-7-11 15415 Humboldt Vicinity of Garberville 122 Comment
  CAS-BOT-BC357269  Pseudognaphalium microcephalum Joseph P. Tracy 1938-8-14 16111 Humboldt Trinity River Valley, at Willow Creek 152 Comment
  HSC88102  Pseudognaphalium stramineum R. W. Becking 1989-2-28 Humboldt Samoa, N Spit, Coast Guard back dunes Comment
  UC1222889  Pseudognaphalium thermale Joseph P. Tracy 1950-9-22 19376 Humboldt below 8 mi Orleans (near Slate Creek); Klamath River 121 Comment
  UC1173656  Pseudognaphalium thermale Joseph P. Tracy 1939-7-13 16348 Humboldt near Humboldt-Mendocino County line; Northern Coast Ranges, South Fork of Eel River 152 Comment
  HSC54224  Pseudotsuga menziesii var. menziesii Griswold, Butler 1979-7-12 7287 Humboldt Near Lone Pine Ridge, close to the town of Willow Creek. 1478 Comment
  HSC74279  Pseudotsuga menziesii var. menziesii M. A. Baker 1980-5-23 1398 Humboldt Near Buck Mtn. 1524 Comment
  HSC95904  Pseudotsuga menziesii var. menziesii Will Ferrand 2001-6-17 19 Humboldt 9 mi. E of intersection of West End Rd. and Warren Creek Rd. 67 Comment
  HSC45284  Psilocarphus brevissimus R. W. Becking 1978-5-21 Humboldt Coast Guard Station on the N Spit to Humboldt Bay in bunker area Comment
  UC1222914  Psilocarphus tenellus Joseph P. Tracy 1942-6-15 17118 Humboldt near Redcrest resort; Englewood 91 Comment
  HSC99408  Pteridium aquilinum var. pubescens K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-6-28 57 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  CAS-BOT-BC460601  Pyrola aphylla Mrs. William Hammond no date on label s.n. Humboldt Fort Seward Comment
  UC562457  Pyrola asarifolia Joseph P. Tracy 1936-6-28 15016 Humboldt Bald Mountain at Lake Prairie 1066 Comment
  HSC72790  Pyrola dentata M. A. Baker 1980-6-16 1935 Humboldt Near Monks Camp 109 Comment
  HSC55032  Pyrola picta Overton, Butler 1979-7-31 11471 Humboldt Near N Trinity Mtn., close to the town of Hoopa 1940 Comment
  CAS-BOT-BC62670  Quercus chrysolepis Doris K. Kildale 1926-9-5 2640 Humboldt on trail between Red Peaks & Signal Peak Lassiks Peaks 1706 Comment
  HSC70845  Quercus chrysolepis M. A. Baker 1980-6-7 1828 Humboldt Near Ammon Creek 732 Comment
  UC1196530  Quercus chrysolepis Joseph P. Tracy 1935-7-14 14066 Humboldt ridge back of Clear Lake; North Coast Ranges, Grouse Mountain 1524 Comment
  HSC43854  Quercus garryana Maralyn O'Meara 1974-7-17 550 Humboldt Kneeland Comment
  CAS-BOT-BC105162  Quercus kelloggii Doris K. Kildale 1927-4-16 3023 Humboldt Between Island Mountain and Fort Seward Comment
  CAS-BOT-BC105167  Quercus kelloggii Doris K. Kildale 1928-4-29 5972 Humboldt Horse Mountain Comment
  UC1196358  Quercus kelloggii Joseph P. Tracy 1913-6-22 4270 Humboldt opposite Buck Mountain (Dinsmore's Ranch); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  UCD165091  Quercus parvula var. shrevei Lois W. Weeth; Kerry Heise and John M. Tucker 2003-10-21 s.n. Humboldt 28.4 mi. from Garberville along Alderpoint Rd. 330 Comment
  HSC102068  Quercus vacciniifolia M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 970 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  HSC37839  Quercus vacciniifolia Thomas W. Nelson, Jane P. Nelson 1976-2-21 2245 Humboldt Beside the Hoopa-Redwood Valley Rd. ca. 5 mi. W of Hoopa Comment
  UC1135804  Quercus vacciniifolia A. E. Wieslander 1931-5-19 204 Humboldt near Orleans; Klamath Forest, Hoopa Quad. Comment
  UC275513  Quercus wislizeni Joseph P. Tracy 1923-10-14 6576 Humboldt North Dobbyn Creek Northern Coast Ranges 152 Comment
  HSC100904  Ranunculus Carl C. Marshall Apr 1886 87 Humboldt Humboldt Hill. Comment
  SEINET200362  Ranunculus J. P. Tracy 1921-7-31 5861 Humboldt Fortuna 30 Comment
  UC162922  Ranunculus californicus Joseph P. Tracy 1911-5-27 3191 Humboldt Humboldt Bay Northern Coast Region (sand dunes of beach) Comment
  UC503024  Ranunculus californicus Joseph P. Tracy 1932-5-10 9965 Humboldt Mattole River North Coast Region, Mattole River 15 Comment
  JEPS55018  Ranunculus flammula Milo S. Baker 1923-7-15 9 Humboldt near Hayes and M. Streets; Eureka swamps Comment
  HSC28201  Ranunculus hebecarpus Thomas W. Nelson 1971-5-7 429 Humboldt Beside Hwy. 101 1.0 mi. S of Arcata Comment
  HSC100619  Ranunculus hederaceus Carl C. Marshall Apr 1886 168 Humboldt Ditches etc. near bay. Comment
  HSC76583  Ranunculus occidentalis var. occidentalis Denis Kearns 1981-7-23 408 Humboldt Near Whiteys Peak. 1524 Comment
  HSC55293  Ranunculus orthorhynchus Griswold, Butler 1979-7-10 6274 Humboldt Near Board Camp Mtn., close to the town of Willow Creek 1372 Comment
  HSC98651  Ranunculus orthorhynchus var. platyphyllus Cara Witte 2008-6-9 694 Humboldt Board Camp Butte. Forest Serivce Road 4E27. 1454 Comment
  UC535740  Ranunculus repens Eleanor Armstrong 1170 Humboldt Richardson Grove Comment
  UC1196270  Ranunculus uncinatus Joseph P. Tracy 1916-5-7 4687 Humboldt Eureka Northern Coast Ranges 0 Comment
  BLMAR510  Ranunculus uncinatus Jennifer Anthony-Wheeler 2009-5-9 510 Humboldt Headwaters Forest Reserve, HRC U08 road; spur to Elk River Comment
  HSC40639  Ranunculus uncinatus var. parviflorus J. P. Smith 1973-5-26 6858 Humboldt Scotia Bluffs along the Eel River near Rio Dell Comment
  HSC64070  Raphanus sativus J. P. Smith 1971-10-6 4965 Humboldt End of Murray Rd. in McKinleyville. Comment
  RSA245205  Raphanus sativus Thomas W. Nelson 1971-4-12 374 Humboldt At the junction of the Hookton Rd and Copenhagen Rd. Comment
  JEPS41990  Rhamnus californica W. L. Jepson 1932-8-8 16480 Humboldt Canoe Creek Grasshopper Peak 1066 Comment
Read comments
Jan 17 2008
  RSA202161  Rhamnus californica subsp. occidentalis W. L. Jepson 1902-1 1977 Humboldt Three Creeks to Willow Creek. 762 Comment
  CDA35698  Rhamnus californica subsp. occidentalis T. R. Gallion 1960-7-7 Humboldt Weitchpec. 0 Comment
  UCR32080  Rhamnus purshiana David J. Keil 1983-7-2 17306 Humboldt North Coast Range, c. 10.5 mi east of the junction with US Hwy 101 along SR 299 [2-3 mi. east of Blue Lake] 183 Comment
  CAS-BOT-BC200383  Rhododendron occidentale var. paludosum Doris K. Kildale 1925-4-19 618 Humboldt Liscom Hill near Essex, Lower Mad River Comment
  HSC41281  Rhododendron occidentale var. paludosum Brad Klipfel 1974-6-25 442 Humboldt Horse Mtn. Comment
  RSA0062952  Rhododendron occidentale var. paludosum C. B. Wolf 1934-7-2 5905 Humboldt 4.5 miles from Snow Camp on road to Bald Mt (Mtns E of Korbel). 1067 Comment
  HSC100495  Ribes Carl C. Marshall Apr 1887 395 Humboldt Hoopa Valley. Comment
  UC535710  Ribes Eleanor Armstrong 1934-8-23 1153 Humboldt Richardson Grove 121 Comment
  CAS-BOT-BC92520  Ribes binominatum Joseph P. Tracy 1932-7-13 10487 Humboldt Klamath Mountains. Trinity Summit. Near Corral Prairie. 1524 Comment
  HSC103228  Ribes binominatum Jade Paget-Seekins 2010-6-13 19 Humboldt Groves Prairie. From the campsite next to the prairie walk almost to the end of the prairie, turn right, walk down the slope towards the creek. 1254 Comment
  RSA0021102  Ribes lacustre Thomas W. Nelson, Jane P. Nelson 1977-6-19 3490 Humboldt [Mount] Lassic. 1616 Comment
  HSC97310  Ribes laxiflorum M. Mesler 2007-5-23 744 Humboldt Near Trinidad, trail from Mill Creek to Elk Head, along the creek near the beach. 23 Comment
  UC154154  Ribes laxiflorum Harley P. Chandler May, 1901 1171 Humboldt Humboldt Bay North Coast Ranges 30 Comment
  HSC38950  Ribes lobbii J. P. Smith, J. O. Sawyer 1975-6-22 8207 Humboldt Six Rivers National Forest, W of Goat Hill Comment
  HSC65621  Ribes lobbii J. P. Smith, J. O. Sawyer 1973-5-12 6688 Humboldt 6.1 mi. from Redwood Creek on Hoopa Rd. Comment
  JEPS49356  Ribes lobbii W. L. Jepson 1902-7-16 2038 Humboldt Trinity Summit 2133 Comment
  UCD102249  Ribes lobbii Gordon Leppig 1998-6-1 866 Humboldt Horse Mountain. Buck Flat, Titlow Hill Rd. @ Ammon Ridge Rd. 1524 Comment
  CAS-BOT-BC212477  Ribes marshallii Joseph P. Tracy 1932-7-15 10592 Humboldt Ridges east of Corral Prairie, Trinity Summit, Klamath Mountains 1828 Comment
  POM214934  Ribes marshallii Joseph P. Tracy 1932-7-15 10592 Humboldt Ridges east of Corral Prairie; Trinity Summit Comment
  CAS-BOT-BC206038  Ribes menziesii Doris K. Kildale 1926-3-25 1627 Humboldt Liscom Hills, Lower Mad River 26 Comment
  CSUSB1881  Ribes menziesii Keith Thompson 1972-3-27 Humboldt Maple Cr. 853 Comment
  UC183577  Ribes menziesii Joseph P. Tracy 1912-3-31 3568 Humboldt Blue Lake Northern Coast Ranges 30 Comment
  HSC20310  Ribes menziesii F. S. Griffith 1965-3-20 104 Humboldt 1.0 mi. E of Hwy. 101 along Mad River Rd. Comment
  HSC102092  Ribes nevadense M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 995 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  UC1563693  Ribes roezlii Barbara Ertter with Thomas J. Delendick 1987-5-16 6938 Humboldt ca. 3 mi e Berry Summit (on Hwy 299, on s side of road above Willow Cr., ca. 20 air mi e of Arcata) 800 Comment
  HSC103222  Ribes roezlii var. cruentum Jade Paget-Seekins 2010-3-18 5 Humboldt Redwood Valley (off 299) Bair Road /Hoopa Road. 609 Comment
  CAS-BOT-BC212524  Ribes sanguineum Pat Daly; Rudy Galindo 1988-4-30 85 Humboldt Titlow Road and Hwy. 299 853 Comment
  HSC20340  Ribes sanguineum S. J. Hawks 1965-5-6 19 Humboldt Clam Beach County Park Comment
  HSC48738  Ribes sanguineum Brad Klipfel 1973-6-10 69 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC71224  Ribes sanguineum Thomas W. Nelson 1977-4-20 3332 Humboldt Along USFS Road 1N15 at summit 915 Comment
  UC667054  Ribes sanguineum Joseph P. Tracy 1933-6-13 12589 Humboldt head Pine Creek (near summit on road from Hoopa westward to Bair's); Hoopa Mountain 1066 Comment
  UCD102487  Ribes sanguineum G. F. Hrusa 1992-5-5 10436 Humboldt Cedar Camp Rd. approximately 10 m. west of Orleans. Mile 9.0. Comment
  CAS-BOT-BC211976  Ribes sanguineum Duart V. Brown 1947-3-30 20 Humboldt Near Tectah Creek, Klamath River Comment
  RSA0019531  Ribes sanguineum R. D. Zortman 1963-4-7 17 Humboldt 5 miles NE of Arcata; south of the Mad River, off Warren Creek Rd. 91 Comment
  CAS-BOT-BC144680  Ribes sanguineum var. glutinosum L. B. Kildale 1930-9-9 10405 Humboldt Bald Mountain 914 Comment
  CHSC68499  Ribes sanguineum var. glutinosum Vernon H. Oswald 1997-4-10 8323 Humboldt Elk Head, north end of Trinidad State Beach. 30 Comment
  HSC103217  Ribes sanguineum var. glutinosum Jade Paget-Seekins 2010-3-14 3 Humboldt McKinleyville, west end of Hiller Park. 10 Comment
  HSC36281  Ribes sanguineum var. glutinosum Barbara Kelly 1976-3-9 248 Humboldt Above Mad River at edge Comment
  HSC49912  Ribes sanguineum var. glutinosum Maralyn O'Meara 1973-2-19 189 Humboldt McKinleyville, Murray Rd. Comment
  HSC95674  Ribes sanguineum var. glutinosum Kevin Thomas 2004-3-18 4 Humboldt Near Clam Beach exit of Hwy. 101 N, along old Hwy. 101, at end of Little River Rd. Comment
  CAS-BOT-BC144695  Ribes sanguineum var. glutinosum H. E. McMinn 1922-8-4 340 Humboldt along Van Dusen River Comment
  HSC97472  Ribes sanguineum var. sanguineum C. Witte 2007-5-17 32 Humboldt National Forest Road 5N10. 1/2 mile east of intersection with National Forest 1. 1441 Comment
  RSA0018246  Ribes sanguineum var. sanguineum Thomas W. Nelson 1977-6-15 3426 Humboldt Along Forest Road 5N10 just north of junction with Road 6N08. 1372 Comment
  CAS-BOT-BC173994  Ribes viscosissimum Joseph P. Tracy 1932-7-12 10466 Humboldt Ridges East of Corral Prairie 1828 Comment
  HSC58107  Ribes viscosissimum G. L. Clifton, Griswold 1979-8-1 12042 Humboldt Near N Trinity Mtn., close to the town of Hoopa 1799 Comment
  HSC96223  Ribes viscosissimum Eric Schori, Kazuyuki Ishimaru 2005-6-15 10 Humboldt 17 mi. S of Hwy. 299, S bank of roadside 1575 Comment
  UC1199149  Rigiopappus leptocladus Joseph P. Tracy 1916-6-19 4737 Humboldt near Alder Point; Northern Coast Ranges, Cahto Creek 152 Comment
  HSC12721  Romanzoffia californica C. E. Fellows 1970-5-1 264 Humboldt 11 mi. W of Willow Creek, S side of Hwy. 299 Comment
  HSC45604  Romanzoffia californica Diane L. Reed 1978-5-7 69 Humboldt E fork of Willow Creek, 34 mi. from US 101 on state Hwy. 299 Comment
  HSC58404  Rorippa curvisiliqua Terry Griswold, Marvin Butler 1979-7-11 7048 Humboldt Near Twin Lakes, close to the town of Willow Creek 1417 Comment
  UC198651  Rorippa curvisiliqua Joseph P. Tracy 1916-5-31 4693 Humboldt along Eel River from South Fork to Scotia (Holmes Flat); Northern Coast Ranges, along Eel River 60 Comment
  UC492261  Rorippa palustris H. E. Parks and Joseph P. Tracy 1931-5-17 9425 Humboldt Trinity River near Willow Creek; Northern Coast Ranges, Trinity River nr Willow Creek 152 Comment
  HSC35752  Rosa californica Thomas W. Nelson, Jane P. Nelson, James Nelson 1975-7-15 1996 Humboldt French Camp, Bald Hills. Comment
  CAS-BOT-BC146480  Rosa gymnocarpa Henry M. Pollard 1956-10-11 s.n. Humboldt Near Orleans on trail to Wilder Creek Comment
  CAS-BOT-BC146495  Rosa gymnocarpa C. B. Wolf 1931-8-30 2376 Humboldt 11 miles above Blue Lake on the Lord Ellis Road to Willow Creek 304 Comment
  SEINET200819  Rosa gymnocarpa Joseph P. Tracy 1911-7-7 3428 Humboldt Brannan Mountain ,viz. Ridge north of Willow Creek, between Willow and Campbell Creeks, near the summit 1219 Comment
  CAS-BOT-BC146842  Rosa nutkana Carl B. Wolf 1931-8-28 2364 Humboldt 1/8 mile from Rohnerville on the road to Fortuna 30 Comment
  HSC98101  Rosa nutkana Cara Witte 2007-6-21 329 Humboldt White Oak Opening. Along Kinsey Ridge. 1259 Comment
  OBI5837  Rosa nutkana Carl B. Wolf 1931-8-28 2364 Humboldt 1.8 mi from Rohnerville on the road to Fortuna 30 Comment
  SBBG27214  Rosa nutkana D. K. Kildale 1927-6-28 Humboldt Mad River at covered bridge Comment
  UC1174842  Rosa nutkana var. nutkana P. C. Everett and E. K. Balls 1959-10-25 23973 Humboldt 11.6 mi sw from Ferndale (on Old Coast Rd to Capetown) 243 Comment
  UC183613  Rosa nutkana var. nutkana Joseph P. Tracy 1912-10-20 4000 Humboldt Alton Northern Coast Region 30 Comment
  UC527438  Rosa nutkana var. nutkana Carl B. Wolf 1931-8-28 2364 Humboldt 1/8 mi from Rohnerville (on road to Fortuna) 30 Comment
  UC588192  Rosa nutkana var. nutkana H. E. and S. T. Parks May 1937 5816 Humboldt Spruce Cove Trinidad 60 Comment
  CAS-BOT-BC146499  Rosa pisocarpa Joseph P. Tracy 1947-8-24 17889 Humboldt Trinity Summit, near Box Camp 1524 Comment
  JEPS45698  Rosa pisocarpa Joseph P. Tracy 1925-6-7 7079 Humboldt near the South Fork; Northern Coast Ranges, Trinity River Valley 182 Comment
  CAS-BOT-BC146878  Rosa rubiginosa Henry M. Pollard 1946-8-27 s.n. Humboldt South side of Klamath River near Boyce Creek, Orleans region Comment
  CAS-BOT-BC148220  Rosa spithamea L. R. Abrams 1918-6-15 7102 Humboldt Brannan Mt. near Willow Creek 1371 Comment
  UCR121766  Rubus discolor George K. Helmkamp, E. A. Helmkamp 2001-7-8 7002 Humboldt North Coast, north spit of Samoa Peninsula, 0.5 mi north of CA Hwy 255 bridge over Humboldt Bay 6 Comment
  RSA43337  Rubus laciniatus H. M. Pollard 1948-8-9 s.n. Humboldt New [near] Orleans. Comment
  UC709448  Rubus lasiococcus Joseph P. Tracy 1941-8-24 17042 Humboldt near McKay camp (South Fork Mountain); , near McKay camp 1676 Comment
  HSC60109  Rubus parviflorus M. A. Baker 1977-5-1 279 Humboldt E of Humboldt State University. Comment
  UC492166  Rubus parviflorus Joseph P. Tracy 1932-7-15 10576 Humboldt near Corral Prairie; Klamath Mountains, Trinity Summit, nr Corral Prairie 1524 Comment
  SEINET4948924  Rubus parviflorus Unknown 1938-8-6 15397 Humboldt Eureka Comment
  CAS-BOT-BC156722  Rubus spectabilis Alice Eastwood 1939-3-19 s.n. Humboldt Garden Club of America Grove Comment
  CAS-BOT-BC156727  Rubus spectabilis David D. Keck; J. Clausen 1935-6-16 3394 Humboldt Mouth of Little River, at roadside Comment
  HSC100638  Rubus spectabilis Carl C. Marshall Apr 1886 165 Humboldt Everywhere in rich soils. Comment
  HSC96356  Rubus spectabilis Gordon Leppig 1998-3-25 729 Humboldt Big Lagoon County Park, Big Lagoon Bog 3 Comment
  UC902132  Rubus spectabilis Joseph P. Tracy 1949-4-3 18279 Humboldt along coast in front South End of Stone Lagoon (Dry Lagoon); in front of South End Stone Lagoon, Dry Lagoon 3 Comment
  SEINET11910601  Rubus spectabilis F. H. Utech, Walter, W.; Knight, I. 1984-1 84 -178 Humboldt ca 8 mi N of Trinidad on US 101 near Patricks Point State Park 6 Comment
  RSA613682  Rubus spectabilis var. franciscanus D. D. Keck, J. Clausen 1935-6-16 3394 Humboldt Mouth of Little River. Comment
  HSC19693  Rubus ursinus N. D. Dennis 1965-5-5 53 Humboldt 1 mi. N of Trinidad on Hwy. 101 Comment
  HSC32429  Rubus ursinus Linda M. Barker 1974-5-11 173 Humboldt Redwood National Park, Bald Hills Rd., Gans Prairie 549 Comment
  UCD17614  Rubus ursinus H. Olmo; T. S. Mallah 1946-6-26 46- 051 Humboldt California. Humboldt County: 23.1 miles from Ettersburg on road to Dyerville. Comment
  HSC56448  Rudbeckia klamathensis Griswold, Butler 1979-7-12 7201 Humboldt Near Groves Prairie, close to the town of Willow Creek. 1256 Comment
  CHSC1353  Rumex acetosella M. Underhill 1952-7-14 Humboldt 30 Comment
  HSC17568  Rumex acetosella Gerald T. Rood 1962-5-6 16 Humboldt Kneeland Rd. ca. 1 mi. W of Barry Rd. Comment
  HSC38935  Rumex acetosella Linda M. Barker 1976-5-13 1483 Humboldt 3 mi. W of Arcata. Comment
  HSC55036  Rumex acetosella Gilbert Muth 1979-7-31 11488 Humboldt Near Tish Tang A Tang Creek, S Fork, close to the town of Gasquet 1417 Comment
  HSC55197  Rumex acetosella G. L. Clifton, Griswold 1979-8-2 12297 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  JEPS39894  Rumex acetosella Lincoln Constance 1934-6-3 807 Humboldt n side Redwood Hwy. (at Dyerville); South Fork Eel River, Bull Creek Region, Dyerville Comment
  HSC17571  Rumex acetosella D. E. Anderson 1961-9-30 1836 Humboldt Comment
  HSC17580  Rumex acetosella Elrid H. Spinas 1948-6-16 66 Humboldt Horse Mtn. Comment
  HSC32426  Rumex acetosella Linda M. Barker 1974-5-11 171 Humboldt Redwood National Park, Bald Hills Rd., Gans Prairie 549 Comment
  HSC40030  Rumex acetosella Thomas W. Nelson, Jane Nelson 1976-6-22 2876 Humboldt On SW-facing slope at Goat Mtn. lookout 1666 Comment
  UCSB30608  Rumex acetosella Edwards, David 1974-8-12 Humboldt North side of 7th St., just W. of its overpass of U.S. 101, Arcata. 18 Comment
  JEPS39885  Rumex conglomeratus Lincoln Constance 1934-5-27 696 Humboldt s end Dyerville Bridge; South Fork Eel River, Bull Creek Region 45 Comment
  HSC17616  Rumex obtusifolius Wm. F. Bowman 1968-11-20 Humboldt 4 mi. SE of Arcata, along Jacoby Creek Rd. Comment
  CAS-BOT-BC109294  Rumex paucifolius R. K. Gierisch; D. H. Esplin 1969-7-1 3538 Humboldt Six Rivers. Grouse Mountain. 1584 Comment
  RSA301862  Rytidosperma penicillatum Joseph P. Tracy 1942-6-28 17267 Humboldt [Unspecified] Comment
  UC668106  Sagina apetala Joseph P. Tracy 1933-3-19 12200 Humboldt Alton to Fortuna (Eel R.); Eel R. 15 Comment
  HSC4151  Sagina decumbens subsp. occidentalis J. P. Tracy 1905-4-30 2172 Humboldt Beach of Humboldt Bay Comment
  CAS-BOT-BC132669  Salix coulteri Joseph P. Tracy 1932-7-31 10286 Humboldt Eel River, Alton to Fortuna 15 Comment
  UC1196669  Salix eastwoodiae Joseph P. Tracy 1935-7-26 14266 Humboldt meadows at Water Dog Lake; Trinity Summit 1828 Comment
  HSC99700  Salix exigua Glenn W. K. Shelton 2010-7-10 30 Humboldt Van Duzen River along State Rte. 36, 2 mi. W of Grizzly Creek Redwoods State Park, across from mile marker 15.00 91 Comment
  HSC19943  Salix exigua var. hindsiana H. E. Parks, J. P. Tracy 1931-5-17 971 Humboldt Mouth of Willow Creek at Trinity River 150 Comment
  SBBG58913  Salix exigua var. hindsiana C. R. Ball, H. Parks, J. Tracy 1932-5-17 1336 Humboldt above Trinity River, 1 mi below bridge on Trinity Hwy 152 Comment
  UC481304  Salix exigua var. hindsiana Harold E. Parks and Joseph P. Tracy 1931-5-17 971 Humboldt mouth of Willow Creek at Trinity R. 150 Comment
  UC519381  Salix exigua var. hindsiana Joseph P. Tracy 1933-5-19 12203 Humboldt Alton to Fortuna; Northern Coast Region, Eel R. 15 Comment
  CAS-BOT-BC104104  Salix hindsiana Harold E. Parks 1931-5-14 0958 Humboldt Fernbridge, Eel River 10 Comment
  CAS-BOT-BC104106  Salix hindsiana Carleton R. Ball; Harold E. Parks; Joseph P. Tracy 1932-5-17 01332 Humboldt channel of Trinity River, near bridge on Trinity Highway 152 Comment
  CHSC9558  Salix hookeriana E. L. Smith 1971-4-7 928 Humboldt Clam Beach County Park ca. 6 mi s of Trinidad. Comment
  HSC41657  Salix hookeriana Thomas W. Nelson 1977-11-3 3759 Humboldt Beside Martin's Slough just upstream from Eureka Muni Golf Course Comment
  JEPS38443  Salix hookeriana J. P. Tracy 1906-4-12 2401 Humboldt Immediate vicinity of Eureka 0 Comment
  POM219565  Salix hookeriana H. E. Parks 1931-3-24 915 -a Humboldt Trinidad. 90 Comment
  RSA183566  Salix hookeriana R. I. Bonn 1965-4-3 11 Humboldt Four miles west of Arcata on Lanphere Rd. Comment
  RSA342502  Salix hookeriana Robert F. Thorne, Percy C. Everett 1965-8-9 35298 Humboldt Big Lagoon. 3 Comment
  UC1196545  Salix hookeriana Joseph P. Tracy 1932-5-10 9951 Humboldt Mattole R. near Petrolia; North Coast Region, Mattole R. 15 Comment
  UC1196672  Salix hookeriana Joseph P. Tracy 1935-3-3 13717 Humboldt mouth of Mad R. 6 Comment
  UC1196678  Salix hookeriana Joseph P. Tracy 1925-11-15 7316 Humboldt Table Bluff Northern Coast Region, around Humboldt Bay (same region as #6929) 60 Comment
  UC1225791  Salix hookeriana Joseph P. Tracy 1948-4-4 17958 Humboldt sand dunes near Samoa; Humboldt Bay 6 Comment
  UC469112  Salix hookeriana Joseph P. Tracy 1931-8-23 9620 Humboldt sand dunes near Samoa; Northern Coast Region, on Humboldt Bay 6 Comment
  UC469116  Salix hookeriana Joseph P. Tracy 1927-3-13 7844 Humboldt mouth of Little River; Northern Coast Ranges, Little R. 6 Comment
  UC469119  Salix hookeriana Joseph P. Tracy 1927-4-23 7921 Humboldt Big Lagoon Northern Coast Ranges 6 Comment
  UC481347  Salix hookeriana Harold E. Parks 1931-5-12 953 Humboldt Samoa Humboldt Bay Comment
  UC495606  Salix hookeriana Joseph P. Tracy 1932-10-12 10873 Humboldt S. Fork Eel R. Miranda; Northern Coast Ranges, S. Fork Eel River 121 Comment
  UC511975  Salix hookeriana Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-13 1250 Humboldt 2 mi e of Redwood Hwy. Engelhart gravel pit (above Blue Lake Rd.); Mad River Comment
  UC512121  Salix hookeriana Harold E. Parks and Joseph P. Tracy 1933-3-19 11006 Humboldt 2 mi w Bridgeville; Van Duzen River 228 Comment
  UC518897  Salix hookeriana Jim Davis Apr 25 1933-Apr 27 1933 5 Humboldt around Eureka Comment
  UCD111017  Salix hookeriana Harold E. Parks 1931-5-28 0999 Humboldt Little River Lagoon. Comment
  UCD111022  Salix hookeriana Carleton R. Ball; Harold E. Parks and Joseph P. Tracey 1932-5-11 01210 b Humboldt Little River Lagoon, 4 1/2 miles south of Trinidad. Comment
  JEPS12976  Salix laevigata Joseph P. Tracy 1932-4-23 9834 Humboldt 4 mi s Dyerville (S. Fork Eel River); Northern Coast Ranges 60 Comment
  HSC48060  Salix lasiandra Thomas W. Nelson 1978-4-23 3888 Humboldt Junction of Copher and Samoa Rds., N of Samoa Comment
  UC1196580  Salix lasiandra subsp. lasiandra Joseph P. Tracy 1933-5-7 12153 Humboldt Alton to Fortuna (Eel R.); Northern Coast Region, Eel R. 15 Comment
  UC481216  Salix lasiandra subsp. lasiandra Harold E. Parks 1931-5-20 996 Humboldt Blue Lake Mad R., Blue Lake 15 Comment
  UC512103  Salix lasiandra subsp. lasiandra Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-11 1209 Humboldt 4 1/2 mi. s. Trinidad (Little R. Lagoon); Little R. Lagoon Comment
  UC512108  Salix lasiandra subsp. lasiandra Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-11 1206 Humboldt 4 1/2 mi. s. Trinidad (Little R. Lagoon); Little R. Lagoon Comment
  HSC96574  Salix lasiandra var. lasiandra Gordon Leppig 2003-2-20 1807 Humboldt Eureka Slough, Cooper Gulch 5 Comment
  CAS-BOT-BC107604  Salix lasiolepis Joseph P. Tracy; Harold E. Parks; Carleton R. Ball 1932-5-12 1236 Humboldt Gravelly floodplain of the Van Duzen River at Blue Slide 91 Comment
  HSC19990  Salix lasiolepis R. Spellenberg, D. Sutherland, A. Sylvester 1966-3-27 1358 Humboldt 1.5 mi. E of Blue Lake on Hwy. 299 Comment
  HSC96359  Salix lasiolepis Gordon Leppig 1999-4-15 1116 Humboldt Big Lagoon County Park, Big Lagoon Bog, W fen edge 3 Comment
  HSC96597  Salix lasiolepis Gordon Leppig 2003-2-22 1812 Humboldt Arcata Marsh, NE corner of log pond 3 Comment
  HSC98689  Salix lasiolepis Cara Witte 2008-9-13 1042 Humboldt Forest Service Road 4N38. 1/2 mile south of intersection to Tri Board Camp. 1506 Comment
  SD894  Salix lasiolepis Harold E. Parks 1931-5-14 963 Humboldt Van Duzen River between Alton and Carlotta 14 Comment
  UC1222297  Salix lasiolepis Joseph P. Tracy 1950-7-25 19049 Humboldt along Van Duzen R. opposite Buck Mt.; Van Duzen R. 762 Comment
  UC469406  Salix lasiolepis Joseph P. Tracy 1927-3-27 7867 Humboldt at Berry's Redwood Creek; Northern Coast Ranges, Redwood Creek 274 Comment
  UC469409  Salix lasiolepis Joseph P. Tracy 1927-3-27 7870 Humboldt at Berry's Redwood Creek; Northern Coast Ranges, Redwood Creek 274 Comment
  UC469427  Salix lasiolepis Joseph P. Tracy 1931-9-7 9628 Humboldt at Willow Creek Trinity R. Valley; Northern Coast Ranges, Trinity R. Valley 152 Comment
  UC495609  Salix lasiolepis Joseph P. Tracy 1932-10-12 10877 Humboldt bank <of> S. Fork Eel R. Miranda; Northern Coast Ranges, S. Fork Eel R., Miranda 121 Comment
  UC506394  Salix lasiolepis Joseph P. Tracy 1932-6-19 10244 Humboldt Buck Mountain Northern Coast Ranges (lower foothills of nw slope, in gully) 762 Comment
  CAS-BOT-BC107288  Salix lasiolepis var. bigelovii Joseph P. Tracy 1933-4-9 10968 Humboldt along Van Duzen R. 228 Comment
  CAS-BOT-BC125628  Salix melanopsis Harold E. Parks 1931-5-14 0956 a Humboldt Van Duzen River above Bridgeville 300 Comment
  CAS-BOT-BC125638  Salix melanopsis Harold E. Parks 1931-5-28 01027 Humboldt Little River Lagoon, at sea level Comment
  JEPS13080  Salix melanopsis Joseph P. Tracy 1939-8-5 16393 Humboldt Van Duzen River at Dinsmore's 737 Comment
  JEPS14786  Salix melanopsis Joseph P. Tracy 1933-5-20 12258 Humboldt Mattole R. near Petrolia; North Coast Region, Mattole R. 15 Comment
  POM219691  Salix melanopsis H. E. Parks 1931-5-14 960 Humboldt Van Duzen River between Alton and Carlotta. 15 Comment
  UC1196637  Salix melanopsis Joseph P. Tracy 1932-8-27 10746 Humboldt on Van Duzen R. Blue Slide; Northern Coast Ranges, Van Duzen R. 91 Comment
  UC469458  Salix melanopsis Joseph P. Tracy 1931-9-19 9681 Humboldt Van Duzen R. Alton; Northern Coast Region, Van Duzen R. 30 Comment
  UC481284  Salix melanopsis Harold E. Parks 1931-5-14 960 Humboldt Van Duzen R. between Alton and Carlotta; Van Duzen R. 15 Comment
  UC490555  Salix melanopsis C. R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-17 10073 Humboldt Redwood Creek at Berrys; North Coast Ranges, Redwood Creek 274 Comment
  UC519370  Salix melanopsis Joseph P. Tracy 1933-6-9 12531 Humboldt along Eel R. Shively; Northern Coast Ranges, Eel R., Shively 30 Comment
  RSA0038342  Salix melanopsis var. tenerrima Harold E. Parks, Joseph P. Tracy 1931-5-17 0972 Humboldt Mouth of Willow Creek at Trinity River. 150 Comment
  UC212993  Salix purpurea Joseph P. Tracy 1919-5-25 5137 Humboldt Ryan's Slough Northern Coast Ranges, Humboldt Bay, Ryan's Slough 15 Comment
  CAS-BOT-BC129140  Salix scouleriana H. E. Parks 1933-1-24 1352 Humboldt Spruce Cove (Parks Ranch), Trinidad Comment
  HSC20084  Salix scouleriana H. E. Parks 1931-5-14 957 Humboldt Little Laribee Ridge, Van Duzen River Comment
  HSC37875  Salix scouleriana Thomas W. Nelson 1976-3-22 2277 Humboldt S side of the Eureka Muni Golf Course Comment
  JEPS12911  Salix scouleriana Joseph P. Tracy 1927-3-27 7846 Humboldt at Willow Creek Trinity River Valley; Northern Coast Ranges, Trinity River Valley 152 Comment
  UC1196699  Salix scouleriana Joseph P. Tracy 1919-9-14 5204 Humboldt Trinity R. Valley near Willow Creek; Northern Coast Ranges, Trinity R. Valley 152 Comment
  UC481332  Salix scouleriana Harold E. Parks 1931-5-12 951 Humboldt Bishop Pine Lodge Trinidad; , Bishop Pine Lodge 150 Comment
  UC490530  Salix scouleriana Joseph P. Tracy 1932-7-13 10507 Humboldt open groung at Corral Prairie (back from the meadows); Klamath Mts., Trinity Summit, Corral Prairie 1524 Comment
  UC54926  Salix scouleriana J. P. Tracy 1901-2-3 991 Humboldt immediate vicinity Eureka 0 Comment
  POM219686  Salix sessilifolia H. E. Parks 1931-5-14 964 Humboldt Van Duzen River between Alton and Carlotta. 15 Comment
  HSC96608  Salix sitchensis Gordon Leppig 2005-4-8 2212 Humboldt Eureka, edge of PALCO Marsh at W end of W Hawthorne St. 3 Comment
  SBBG57990  Salix sitchensis L. Rowntree 1931-7-25 Humboldt Carlotta Comment
  UC1199054  Salix sitchensis Joseph P. Tracy 1938-7-31 16088 Humboldt head of Willow Creek (along Trinity Hwy.); Willow Creek Canyon, Willow Creek 762 Comment
  UC490490  Salix sitchensis Joseph P. Tracy 1932-8-27 10745 Humboldt on Van Duzen R. Blue Slide; Northern Coast Ranges, Van Duzen R., Blue Slide 91 Comment
  UC1173598  Salix tracyi Joseph P. Tracy 1936-3-29 14785 Humboldt South Fork of Eel River, between Miranda and Redway 91 Comment
  UC504018  Salix tracyi C. R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-12 1244 Humboldt Van Duzen River at Blue Slide 91 Comment
  RSA2192  Sambucus callicarpa C. B. Wolf 1931-3-26 s.n. Humboldt from coastal bluffs, 1 mile outh of Trinidad 91 Comment
  JEPS12746  Sambucus mexicana W. L. Jepson 1932-7-24 16390 Humboldt Mail Ridge 914 Comment
  JEPS13393  Sambucus racemosa var. racemosa Lincoln Constance 1934-5-26 679 Humboldt Dyerville Bridge South Fork Eel River, Bull Creek Region (s end, sand and gravel bar of river) 45 Comment
  SDSU2909  Sambucus racemosa var. racemosa D. F. Howe 1963-8-6 3704 Humboldt 4.5 miles south of Orick on #101. Comment
  UC1541386  Sanicula arctopoides H. E. Parks May 1934 4327 Humboldt Trinidad, Egg Point Egg Point; Trinidad, Egg Point Comment
  UC1197100  Sanicula crassicaulis Joseph P. Tracy 1927-5-15 8034 Humboldt Trinity River Valley near the South Fork; Trinity River Valley 182 Comment
  BLMAR128  Sanicula crassicaulis Jennifer Anthony-Wheeler 1996-4-3 128 Humboldt Richardson ' s grv., growing along rdside in doug-fir forest 518 Comment
  UC642283  Sanicula laciniata Joseph P. Tracy 1935-5-25 13907 Humboldt Dobbyn Creek 152 Comment
  JEPS973  Sanicula tuberosa Joseph P. Tracy 1927-6-12 8156 Humboldt Northern Coast Ranges, Horse Mountain Horse Mountain; Northern Coast Ranges, Horse Mountain 1219 Comment
  UC642303  Sanicula tuberosa Joseph P. Tracy 1927-7-12 8156 Humboldt Northern Coast Ranges, Horse Mountain Horse Mountain; Northern Coast Ranges, Horse Mountain 1219 Comment
  SEINET13945256 Image available Sanicula tuberosa R. K. Gierisch, D. H. Esplin 1969-1 3531 Humboldt Six Rivers, Grouse Mtn, Sec 36, T5N, R4E. Alt 5200. NW 5% Comment
  UC1197327  Sanicula tuberosa Joseph P. Tracy 1930-6-21 8780 Humboldt Northern Coast Ranges, Laribee Valley Laribee Valley; Northern Coast Ranges, Laribee Valley 792 Comment
  POM232030  Satureja douglasii I. L. Wiggins 1930-7-11 4681 Humboldt Near Samoa. Comment
  UC183566  Saxifraga californica Joseph P. Tracy 1913-5-4 4063 Humboldt Kneeland Prairie; Northern Coast Ranges, Kneeland Prairie 762 Comment
  BLMAR287  Saxifraga mertensiana Jennifer Anthony-Wheeler 2000-4-18 287 Humboldt King range, growing on rocky ridgeline, outcrop/vista in millcrk forest 402 Comment
  CAS-BOT-BC441186  Saxifraga mertensiana Lincoln Constance; Reed C. Rollins 1942-5-11 2869 Humboldt Three miles west of East Fork of Willow Creek Comment
  UC183569  Saxifraga nidifica var. nidifica Joseph P. Tracy 1913-6-17 4178 Humboldt near summit of Buck Mountain; Northern Coast Ranges, Buck Mountain 1676 Comment
  CHSC92413  Schoenoplectus mucronatus Gordon Leppig 2004-9-1 2196 Humboldt Eel River at Holmes Flat. Gravel bar on east edge of river. UTM Zone 10, 420903E, 447244N. 400 Comment
  RSA246880  Schoenoplectus pungens Robert F. Thorne, Percy C. Everett 1965-8-9 35332 Humboldt Clam Beach County Park. 3 Comment
  UC1541349  Scirpus acutus var. occidentalis H. E. and S. T. Parks 1930-9-14 771 Humboldt Big Lagoon Comment
  HSC36077  Scirpus microcarpus Jack Watson 1962-5-2 Humboldt Wet soil along game pens of HSU campus Comment
  HSC59434  Scirpus microcarpus Kenneth Clark 1979-4-21 141 Humboldt Clam Beach, 3.5 mi. N of McKinleyville on Hwy. 101 Comment
  HSC7462  Scirpus microcarpus J. R. Kahl 1962-5-4 27 Humboldt 3 mi. S of Trinidad along old Hwy. 101 Comment
  UC1103644  Scirpus microcarpus Joseph P. Tracy 1943-7-18 17440 Humboldt along shore Big Lagoon; along shore Big Lagoon 3 Comment
  CHSC20041  Scoliopus bigelovii M. S. Taylor 1975-4-12 465 Humboldt Ca. 1 mi w of Berry Summit on Hwy 299, ca. 6 mi w of Willow Creek. 762 Comment
  CHSC2305  Scoliopus bigelovii V. Holt 1933-4-10 Humboldt Comment
  HSC15633  Scoliopus bigelovii D. E. Anderson 1963-3-23 2397 Humboldt Bald Mtn. Rd. Comment
  SEINET12050496  Scoliopus bigelovii F. H. Utech 1988-1 88 -292 Humboldt 1.5 mi N of Bridgeville on Road from Bridgeville to Kneeland, along Brown Creek 350 Comment
  UC275518  Scoliopus bigelovii Joseph P. Tracy 1923-4-25 6144 Humboldt Carlotta Northern Coast Ranges, Carlotta 60 Comment
  UC147885  Scrophularia californica J. P. Tracy 1906-5-20 2465 Humboldt immediate vicinity Eureka 0 Comment
  HSC100682  Scrophularia californica Carl C. Marshall Apr 1886 175 Humboldt Everywhere. Comment
  SEINET5223991  Scrophularia californica Unknown 2002-8-22 88 Humboldt Along Fischer Road 0.25mi N of the Mad River. Comment
  JEPS32499  Scrophularia californica subsp. californica Peter H. Raven 1963-5-15 18376 Humboldt ca 1.5 mi s Trinidad (Luffenholz Beach) Comment
  UC1225840  Scutellaria antirrhinoides Joseph P. Tracy 1942-6-15 17167 Humboldt 5 mi n of Garberville 152 Comment
  UC1713599  Scutellaria antirrhinoides Joseph P. Tracy 1938-6-9 15875 Humboldt near Blocksburg (2 mi s of town) 304 Comment
  HSC35699  Scutellaria californica Thomas W. Nelson, B. Reinhardt 1975-7-30 2106 Humboldt Beside Rd. out Whiting Ridge Comment
  UC154265  Scutellaria tuberosa Mrs. M. H. Manning June, 1901 94 Humboldt Hupa Valley Comment
  UC1222181  Sedum divergens Joseph P. Tracy 1950-8-8 19294 Humboldt Granite Rock area Trinity Summit, Croghan Hole, Granite Rock area (Croghan Hole, Trinity Summit) 1676 Comment
  HSC58203  Sedum laxum Walter Overton 1979-8-1 12309 Humboldt Near Packsaddle Ridge, close to the town of Hoopa 1402 Comment
  UC1488733  Sedum laxum Marc Baker 1980-7-15 2941 Humboldt near Whiting Ridge; Pilot Creek Quad., near Whiting Ridge 300 Comment
  HSC79268  Sedum laxum subsp. flavidum D. K. Imper 1983-7-12 Humboldt Six Rivers National Forest, Blue Creek Mtn. Comment
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May 27 2013
  HSC79271  Sedum laxum subsp. flavidum D. K. Imper 1984-5-17 Humboldt Hogback Ridge W of FS6N06, 1.0 mi. N of junction with 5N01 1341 Comment
  UC1198839  Sedum laxum subsp. heckneri Joseph P. Tracy 1933-8-30 13015 Humboldt Grouse Mountain Grouse Mountain (on rock ledge) 1371 Comment
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Aug 17 2011
  CAS-BOT-BC63827  Sedum spathulifolium L. R. Abrams 1922-6-25 8294 Humboldt Bluffs north of Big Lagoon. Comment
  UC2046852  Sedum spathulifolium R. E. Brainerd with N. Otting 2012-6-9 2042 Humboldt Humboldt County: Pine Ridge Road, headwaters of Lacks Creek drainage; ca. 17.5 air miles east-northeast of Arcata. Comment
  JEPS48059  Sedum spathulifolium Lincoln Constance 1934-6-1 767 Humboldt Bull Cr. Road between Dyerville Bridge and Bull Cr. flat grove (mouth Bull Cr.) (Mouth Bull Cr, South Fork Eel River); South Fork Eel River, Bull Creek Region 45 Comment
  UC11264  Sedum spathulifolium C. C. Marshall 1888-1 Humboldt Comment
  HSC89451  Selaginella oregana P. A. Daly 1986-3-12 85 Humboldt Trinidad Head 61 Comment
  CAS-BOT-BC62179  Selaginella oregana Joseph P. Tracy 1933-5-18 12196 Humboldt Mad River, near Blue Lake 15 Comment
  UC1713630  Selaginella oregana Don Branscomb 1957-12-26 Humboldt Lookout rock Patrick's Point Comment
  CAS-BOT-BC69735  Selaginella wallacei Donald L. Branscomb 1957-12-26 s.n. Humboldt Look Out Rock, Patrick's Point. Comment
  HSC56353  Senecio integerrimus var. major Griswold, Butler 1979-7-10 6324 Humboldt Near Board Camp Mtn., close to the town of Willow Creek 1372 Comment
  UC176813  Senecio integerrimus var. major Joseph P. Tracy 1913-6-17 4160 Humboldt near the summit Buck Mountain; Northern Coast Ranges 1524 Comment
  UC1199491  Senecio minimus Joseph P. Tracy 1936-8-23 15161 Humboldt Carlotta Northern Coast Ranges Comment
  UC545823  Senecio minimus H. E. Parks 1931-9-1 1058 Humboldt Trinidad 76 Comment
  UC204834  Senecio minimus Joseph P. Tracy 1918-7-28 5088 Humboldt ocean beach at Humboldt Bay Comment
  CAS-BOT-BC364330  Senecio triangularis Joseph P. Tracy 1932-7-13 10523 Humboldt Trinity Summit. Corral Prairie 1584 Comment
  HSC102519  Senecio triangularis M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-28 1506 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1106 Comment
  CAS-BOT-BC85836  Sequoia sempervirens Doris K. Kildale 1929-1-27 6926 Humboldt Stevens Grove - South Fork Eel River Comment
  CAS-BOT-BC85842  Sequoia sempervirens Joseph P. Tracy 1935-12-8 14764 Humboldt Near Korbel 304 Comment
  UC1530712  Sequoia sempervirens R. W. Becking 1984-9-23 Humboldt Federation of Women's Grove Humboldt Co. Weott, Humboldt Redwoods State Park, Federation (Humboldt Co. Weott <sic>, Humboldt Redwoods State Park) Comment
  UCD19960  Sequoia sempervirens C. H. Lamoureux; R. Gankin 1956-3-17 1044 Humboldt Southern boundary of Jensen Grove, between Meyers and Miranda on Hwy 101. Comment
  UCR142864  Sequoia sempervirens C. B. Wolf 1944-10-25 11469 Humboldt North Coast, Eel River Valley, Redwood Hwy, 2.4 mi south of Scotia 61 Comment
  SEINET11739296  Sequoia sempervirens R. J. Mastrogiuseppe 1966-1 s.n. Humboldt along state route 229 from Arcata to Redding, Demonstration Forest, Simpson Timber Co Comment
  HSC12703  Sherardia arvensis Jana Kattenhorn 1970-10-28 148 Humboldt Mad River at the mouth of Lindsey Creek, N Bank Rd. off Hwy. 299 Comment
  UC602552  Sherardia arvensis Joseph P. Tracy 1937-6-20 15337 Humboldt 10 mi from mouth Bear River Comment
  HSC100570  Sidalcea diploscypha Carl C. Marshall 467 Humboldt Throughout Humboldt. Comment
  CAS-BOT-BC205568  Sidalcea malachroides Doris K. Kildale 1927-7-2 3628 Humboldt Lord-Ellis road Comment
  UC906705  Sidalcea malviflora subsp. asprella Harold E. Parks and Joseph P. Tracy 1942-7-1 11577 Humboldt Dinmore's 762 Comment
  HSC69889  Sidalcea malviflora subsp. nana Thomas W. Nelson, Jane Nelson 1977-7-30 3663 Humboldt Beside State Rte. 36, 1 mi. E of Dinsmore. 732 Comment
  POM160275  Sidalcea malviflora subsp. nana Joseph P. Tracy 1926-6-20 s.n. Humboldt Horse Mountain. 1524 Comment
  HSC103268  Sidalcea malviflora subsp. patula John McRae 2014-5-8 Humboldt South of Fortuna; north side of Hwy. 36, approx. 3/4 mi. east of intersection with Hwy 101. 18 Comment
  RSA46866  Sidalcea malviflora subsp. patula Doris K. Kildale 1927-7-10 s.n. Humboldt Gans Prairie, Bald Mountain Comment
  UC668134  Sidalcea malviflora subsp. patula Joseph P. Tracy 1936-6-9 14877 Humboldt Bear River Ridge Northern Coast Ranges, Bear River Ridge 609 Comment
  SEINET6947342  Sidalcea malviflora subsp. patula W. P. Vestal, A. G. Vestal 1937-6-22 s.n. Humboldt Kneeland prairie, near serpentine outcrops, about 4 miles southeast of Kneeland. Comment
  HSC99563  Sidalcea oregana subsp. eximia K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-8-10 228 Humboldt Near North Trinity Mtn, 11. 9 mi east of Hoopa on Big Hill Rd (8N01), at Box Camp, Six Rivers National Forest. 1372 Comment
  HSC45617  Silene Diane L. Reed 1978-5-7 45 Humboldt Friday Ridge Road, near intersection with Hwy. 299 Comment
  HSC32097  Silene bolanderi D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-17 5698 Humboldt McKeown Ranch, N of Dinsmore Comment
  HSC35031  Silene bolanderi Thomas W. Nelson, James Nelson 1975-5-24 1849 Humboldt McKeown Ranch, N of Dinsmore. Comment
  HSC35274  Silene bolanderi A. M. Montalvo, J. D. Ackerman 1975-6-22 493 Humboldt 6.4 mi. W of Dinsmore along Hwy. 36. Comment
  CDA38659  Silene californica B. Villegas/D. Juliano 2010-6-17 PDR# 1535021 -C Humboldt Alderpoint: Garberville - Alderpoint Rd. 0 Comment
  HSC70980  Silene campanulata subsp. glandulosa Gail Newton 1980-7-22 1665 Humboldt Near Devils Backbone 231 Comment
  JEPS22945  Silene campanulata subsp. glandulosa Volney Rattan 1883-1 Humboldt Hoopa Valley Comment
  HSC4188  Silene gallica J. E. Lankila 1962-5-14 23 Humboldt W bank of river at Fernbridge Comment
  UC1137896  Silene hookeri H. S. Yates 1936-6-17 5719 Humboldt Burr Valley South Fork Peak Quad. Comment
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Aug 11 2014
  CAS-BOT-BC181242  Silene hookeri subsp. bolanderi Lincoln Constance; Alan A. Beetle 1940-5-17 2612 Humboldt McClellan Mountain, near Eureka 822 Comment
  POM172672  Silene hookeri subsp. bolanderi Joseph P. Tracy 1913-6-20 4234 Humboldt Lower foothills of Buck Mountain, on its NW slope. 762 Comment
  CAS-BOT-BC389061  Silene laciniata subsp. californica Lincoln Constance; Alan A. Beetle 1940-5-16 2610 Humboldt Coastal bluffs above Alton Comment
  HSC44729  Silene laciniata subsp. californica Maralyn O'Meara 1972-6-8 78 Humboldt Along Bald Hills Rd, 16.4 mi. E of junction with Hwy. 101 Comment
  UC162883  Silene menziesii Harley P. Chandler June, 1901 1319 Humboldt Hupa Indian Reservation North Coast Ranges, Hupa Indian Reservation 152 Comment
  JEPS53885  Sisymbrium altissimum W. L. Jepson 1932-8-8 16530 Humboldt hill above Weott Comment
  RSA366962  Sisyrinchium bellum Bonnie C. Templeton 1964-6-13 10183 Humboldt Near old Highway 101 to Trinidad Comment
  HSC13933  Sisyrinchium californicum D. E. Anderson 1961-9-9 1798 Humboldt Big Lagoon County Park Comment
  RSA377726  Smilacina stellata var. sessilifolia Thekla Mohr 1919-07 s.n. Humboldt Eel River. Comment
  UCD126814  Solanum americanum Robert F. Thorne; P. Everett 1965-8-5 35147 Humboldt Samoa Dunes. 3 Comment
  RSA473662  Solidago canadensis subsp. elongata M. B. Dunkle 1936-8-18 4812 Humboldt Fortuna. Comment
  HSC36596  Solidago elongata J. O. Sawyer, Thomas W. Nelson, Linda M. Barker 1975-9-4 1306 Humboldt Megwill Point on Elkhead, N of Trinidad in Trinidad State Beach 15 Comment
  UC1223176  Solidago elongata Joseph P. Tracy 1950-8-8 19280 Humboldt on Trinity Summit (Croghan Hole); on Trinity Summit, Croghan Hole 1676 Comment
  CHSC423  Solidago spathulata M. Anthony 1960-5-1 Humboldt Coastal. Comment
  HSC67441  Solidago spathulata J. P. Smith 1971-10-6 4948 Humboldt End of Murray Rd. in McKinleyville. Comment
  UC1541471  Solidago spathulata J. P. Tracy 1924-9-21 6900 Humboldt Eureka Comment
  CAS-BOT-BC364968  Solidago velutina subsp. californica Joseph P. Tracy 1937-9-5 15682 Humboldt Trinity River Valley, at Willow Creek 152 Comment
  UC1199287  Soliva sessilis Joseph P. Tracy 1914-5-14 4430 Humboldt Fort Seward , Fort Seward (Northern Coast Ranges) 121 Comment
  UCD136120  Soliva sessilis Linda M. Barker 1976-4-13 1385 Humboldt 3 miles west of Arcata. Comment
  HSC6220  Sonchus asper Paul Shields 1955-6-16 Humboldt HSC Campus Comment
  HSC102588  Sorbus scopulina M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-29 1575 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1579 Comment
  BLMAR314  Sparganium emersum Jennifer Anthony-Wheeler 2002-8-9 314 Humboldt Lost Coast Headland, growing along edge of middle pond 121 Comment
  SBBG89225  Spartina foliosa A. Keedy 1988-9-18 8 Humboldt Jolly Giant Crk {near mouth}; Arcata Salt Marsh Comment
  HSC37941  Spergula arvensis Peter Sorensen 1976-6-4 Humboldt N Spit of Humboldt Bay, S of Samoa near airport Comment
  HSC89444  Spergula arvensis P. A. Daly 1986-2-23 51 Humboldt Along trails at Trinidad Head 6 Comment
  HSC24773  Spergularia bocconi Barbara Kelly 1971-5-27 4 Humboldt Eureka sidewalk next to Penny's, E St. Comment
  POM17174  Spiraea douglasii J. B. Feudge 1923-7-23 57 Humboldt Trinidad. 9 Comment
  RSA472779  Spiraea douglasii Charlotte M. Hoak 1931-7-14 s.n. Humboldt Alton. Comment
  UC1199028  Spiraea douglasii Joseph P. Tracy 1927-8-22 8350 Humboldt Bald Mountain Northern Coast Ranges (near High Prairie) 1066 Comment
  UC14209  Spiraea douglasii Chesnut and Drew 1888-8-10 Humboldt Arcata Comment
  HSC41270  Spiraea splendens var. splendens Brad Klipfel 1974-6-25 413 Humboldt Horse Mtn. Comment
  HSC41323  Spiraea splendens var. splendens Brad Klipfel 1974-8-2 520 Humboldt Horse Mtn. Comment
  HSC40375  Spiranthes romanzoffiana Linda M. Barker 1976-9-3 1695 Humboldt Lanphere-Christensen Dunes, 3 mi. W of Arcata. Comment
  UC1196406  Spiranthes romanzoffiana Joseph P. Tracy 1944-7-3 17487 Humboldt Willow Creek Trinity River Valley 152 Comment
  HSC59648  Spirodela polyrhiza Michael Dalke 1979-5-18 91 Humboldt Hwy. 101, Clam beach pond 0 Comment
  UC1239728  Stachys ajugoides var. rigida Joseph P. Tracy 1913-6-20 4217 Humboldt opposite Buck Mountain (Dinsmore's Ranch); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  JEPS63027  Stachys ajugoides var. rigida Milo S. Baker 1923-7-16 18 Humboldt 4 mi se Eureka Comment
  UCLA71115  Stachys ajugoides var. rigida H. Lewis 1940-7-3 Humboldt Little River Beach State Park Comment
  HSC12560  Stachys arvensis D. La Conte 1970-11-22 11 Humboldt Comment
  HSC14420  Stachys chamissonis C. B. Wolf 1941-7-28 11087 Humboldt Between the redwood Hwy. and Crannell 8 Comment
  SD93024  Stachys chamissonis W. Bertsch 1953-7-30 230 Humboldt Highway 101, 5 miles north of Arcata. Comment
  UCLA71113  Stachys mexicana C. Epling, Wm. Robison 1935-7-22 Humboldt Patrick's Point Comment
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Aug 1 2016
  UCR30858  Stachys rigida var. quercetorum A. C. Sanders 1981-8-6 2310 Humboldt Russ Park, City of Ferndale 46 Comment
  CAS-BOT-BC175348  Stellaria borealis subsp. sitchana Malcom A. Nobs; S. Galen Smith 1949-8-9 1245 Humboldt Clam Beach Comment
  UC668079  Stellaria borealis subsp. sitchana Joseph P. Tracy 1937-7-17 15443 Humboldt near Field's Landing (Still Ranch) 6 Comment
  UC183618  Stellaria media Joseph P. Tracy 1913-3-9 4015 Humboldt near Hydesville; Northern Coast Region 60 Comment
  UC205170  Stephanomeria virgata subsp. pleurocarpa Joseph P. Tracy 1919-9-14 5187 Humboldt near Mouth of Willow Creek; Northern Coast Ranges, Valley of the Trinity River 152 Comment
  HSC58417  Stipa lemmonii Griswold, Butler 1979-7-12 7219 Humboldt Near Groves Prairie, close to the town of Willow Creek. 1256 Comment
  CAS-BOT-BC87611  Streptanthus tortuosus Henry M. Pollard 1946-9-2 s.n. Humboldt Orleans Mount Trail. 1524 Comment
  UC668050  Streptanthus tortuosus Joseph P. Tracy 1937-7-2 15399 Humboldt on ridge 2 mi e Grove's Prairie (rocky bank in open); Trinity Summit 1524 Comment
  HSC35696  Streptanthus tortuosus var. tortuosus Thomas W. Nelson, B. Reinhardt 1975-7-30 2103 Humboldt Beside road out Whiting Ridge Comment
  SEINET4173984 Image available Streptopus amplexifolius Joseph P. Tracy 1923-6-24 6366 Humboldt Bald Mountain, near High Prairie 1067 Comment
  HSC32139  Streptopus amplexifolius D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5606 Humboldt Mt. Lassic and two smaller peaks to immediate E 1768 Comment
  JEPS62166  Streptopus amplexifolius var. americanus W. L. Jepson 1902-7-17 2058 A Humboldt trail to Devil's Backbone; Trinity Summit 2133 Comment
  HSC58186  Swertia radiata G. L. Clifton, Griswold 1979-8-2 12275 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  CAS-BOT-BC269568  Symphoricarpos albus var. laevigatus Carl B. Wolf 1930-10-29 1782 Humboldt Old Coast Road at Honeydew Post Office 152 Comment
  HSC99624  Symphoricarpos albus var. laevigatus Thomas W. Nelson, James Nelson 1975-9-3 2196 Humboldt Above junction of Maple Creek-Kneeland Rd. Comment
  JEPS13646  Symphoricarpos mollis Lincoln Constance 1934-6-3 808 Humboldt road from High Rock to Horse Prairie (High Rock (on Redwood Hwy, 1 mi n of Dyerville)); South Fork Eel River, Bull Creek Region Comment
  CAS-BOT-BC99369  Symphyotrichum subspicatum W. R. Dudley 1899-6-1 s.n. Humboldt Eureka [Penninsula] Peninsula Comment
  JEPS26388  Synthyris reniformis Joseph P. Tracy 1941-4-8 16810 Humboldt Willow Creek Canyon, along Trinity Highway Willow Creek Canyon 609 Comment
  POM126512  Synthyris reniformis Joseph P. Tracy 1922-4-30 6039 Humboldt Brannan Mtn. Along road between Three Creeks and mouth of Willow Creek. 915 Comment
  UC1198055  Synthyris reniformis Joseph P. Tracy 1927-4-23 7918 Humboldt Blue Lagoon; Northern Coast Region 6 Comment
  UC249515  Synthyris reniformis Joseph P. Tracy 1922-4-30 6039 Humboldt along road between Three Creeks and mouth of Willow Creek; Northern Coast Ranges, Brannan Mountain 914 Comment
  UC27647  Synthyris reniformis C. C. Marshall 1887-1-7 Humboldt hills near Mad River 609 Comment
  UC532542  Synthyris reniformis Joseph P. Tracy 1924-3-9 6616 Humboldt Lawrence Creek, at crossing of the Kneeland Road; Lawrence Creek 457 Comment
  UC582543  Synthyris reniformis Joseph P. Tracy 1923-3-10 6152 Humboldt Van Duzen River, near Grizzly Creek; Van Duzen River 91 Comment
  SEINET10473457  Tanacetum Mary Susan Taylor 1990-8-22 Taylor 6072 Humboldt Samoa Recreation Area on Samoa Peninsula, Staging Area, Eureka. Coastal scrub in ORV area. Comment
  SEINET3816603  Tanacetum bipinnatum J. P. Tracy 1901-8-7 1269 Humboldt Sand hills of ocean beach at Samoa, opp eureka Comment
  UC1223046  Taraxacum officinale Joseph P. Tracy 1951-6-24 19542 Humboldt Ashland Ridge Kneeland Prairie 762 Comment
  HSC34631  Taraxacum officinale A. M. Montalvo 1975-4-9 202 Humboldt Arcata Community Forest about .25 mi. up Trail #3 46 Comment
  HSC6268  Taraxacum officinale Francis Winter 1960-4-24 Humboldt Samoa Peninsula 6 mi. W of Arcata Comment
  HSC65900  Tauschia glauca M. A. Baker 1980-6-26 2396 Humboldt Near Sims Creek 610 Comment
  JEPS14252  Tauschia kelloggii Joseph P. Tracy 1936-6-10 14933 Humboldt mountain slopes w mouth South Fork of Trinity River; w of mouth South Fork of Trinity River 457 Comment
  HSC48986  Taxus brevifolia M. A. Baker 1979-5-25 764 Humboldt Comment
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Feb 15 2013
  UC502917  Taxus brevifolia Joseph P. Tracy 1927-3-27 7865 Humboldt Willow Creek Canyon Northern Coast Ranges, Willow Creek Canyon 762 Comment
  HSC49031  Tellima grandiflora Patricia Shesgreen 1978-5-5 63 Humboldt 5.1 mi. S of Ferndale on Mattole Rd. Comment
  UC161580  Tellima grandiflora Joseph P. Tracy 1911-6-4 3214 Humboldt 5 mi from coast Little River; Northern Coast Region 121 Comment
  UC1222745  Thalictrum fendleri var. polycarpum Joseph P. Tracy 1950-7-25 18879 Humboldt Burr Valley Buck Mountain (nw slope of mt.) 1066 Comment
  UCD96769  Thalictrum fendleri var. polycarpum Joseph P. Tracy 1948-6-13 18037 Humboldt Larrabee Creek, 7 miles NW of Blocksburg. 304 Comment
  UC162828  Thalictrum occidentale Joseph P. Tracy 1905-4-2 2154 Humboldt now Arcata; Northern Coast Region, region about Humboldt Bay 0 Comment
  HSC100463  Thelypodium lasiophyllum Carl C. Marshall 32 Humboldt No data. Comment
  HSC15097  Thermopsis macrophylla D. E. Anderson 1965-5-15 3692 Humboldt About 7 mi. N of Hoopa on Bloody Camp Prairie Rd. Comment
  HSC61646  Thermopsis macrophylla Ruby Van Deventer 1959-6-20 Humboldt Humboldt-Del Norte Co. line, Onion Lake 1067 Comment
  HSC1299  Thuja plicata Francis Winter 1960-5-6 Humboldt 1.0 mi. W of Blue Lake, Hwy. 299 Comment
  JEPS27183  Thuja plicata W. L. Jepson 1902-8-2 2137 Humboldt Wildcat Grade near Ferndale 457 Comment
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Sep 8 2007
  LA31710  Thuja plicata H. E. Parks; 1932-7-25 1139 Humboldt Trinidad, Camp 21, Hammond Lumber Company 152 Comment
  SBBG34242  Thuja plicata L. Rowntree 1931-7-27 Humboldt near Ferndale Comment
  CAS-BOT-BC88327  Thysanocarpus curvipes Mark Bransom; Daniel Brown; Ron Hildebrandt; Nina Meiselman 1986-4-19 30 Humboldt Across Route 299 from sign for White's Bar Picnic area. Comment
  CAS-BOT-BC436907  Tiarella trifoliata var. unifoliata Doris Kildale 1931-5-10 10676 Humboldt Snow Camp Comment
  OBI33243  Tiarella trifoliata var. unifoliata David J. Keil 1983-7-1 17257 Humboldt Along Bull Crk Flats Rd 1.4 mi W of US 101. Humboldt Redwoods State Park Comment
  UC902074  Tiarella trifoliata var. unifoliata Joseph P. Tracy 1949-8-4 18423 Humboldt Mud Springs Trinity Summit (Trinity Summit); , Mud Springs 1341 Comment
  UC677699  Tiarella trifoliata var. unifoliata C. C. and S. K. Harris 1936-6-16 660 Humboldt Redwood forest on Yager Road from Carlotta 152 Comment
  HSC100653  Tiarella unifoliata Carl C. Marshall Jun 1886 323 Humboldt Trail E of Hoopa. Comment
  JEPS62181  Tofieldia occidentalis subsp. occidentalis Hilda W. Grinnell 1932-7-12 14 Humboldt below McKay Camp (South Fork Mountain) Comment
  UC1198897  Tolmiea diplomenziesii Joseph P. Tracy 1924-6-1 6689 Humboldt Lawrence Creek Northern Coast Ranges (at crossing of the Kneeland Road) 609 Comment
  CAS-BOT-BC447612  Tolmiea menziesii Eliz. Parsons Hawver 1915-6-1 s.n. Humboldt Carlotta Comment
  UC169095  Tonella tenella Mrs. M. H. Manning Apr 1902 Humboldt Hupa Comment
  SEINET6987681  Tonella tenella Wanda P. Vestal, A. G. Vestal 1937-6-23 s.n. Humboldt Near east end of Bald Hills, southeast of Orick. Comment
  HSC74669  Torilis arvensis Gail Newton 1981-8-7 2434 Humboldt Near Bug Creek 1042 Comment
  UC642321  Torilis nodosa Joseph P. Tracy 1935-5-25 13892 Humboldt Dobbyn Creek 152 Comment
  HSC58683  Torreyochloa pallida var. pauciflora G. L. Clifton, Griswold 1979-8-2 12284 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  JEPS63934  Toxicodendron diversilobum W. L. Jepson 1902-7-10 2003 a Humboldt S. Fork Trinity R., Martin's Ranch Comment
  JEPS60737  Trautvetteria caroliniensis Joseph P. Tracy 1937-7-2 15387 Humboldt ne of Hawkins Bar (in Trinity Summit Range, Happy Camp Mountain); Trinity Summit Range, Happy Camp Mountain Comment
  CDA40991  Trichostema laxum E. C. Whitney 1965-9-2 s.n. Humboldt [no additional data] 0 Comment
  RSA440753  Trichostema laxum E. S. Spalding 1924-7-13 s.n. Humboldt Lanis Flats, bank of Eel River. Comment
  RSA82198  Trichostema laxum F. W. Peirson 1926-7-13 7063 Humboldt Mad River, vicinity of Blue Lake. Comment
  HSC102186  Trichostema oblongum M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-4 1100 Humboldt Andy's Camp 1564 Comment
  HSC71212  Trifolium arvense Thomas W. Nelson, Jane P. Nelson 1979-5-25 4697 Humboldt Willow Creek Comment
  SDSU5270  Trifolium arvense D. F. Howe 1979-6-25 5195 Humboldt #299, one milesouth of Willow Creek. Comment
  UC1197182  Trifolium bifidum var. decipiens Joseph P. Tracy 1906-7-4 2522 Humboldt near Hydesville (Yager Creek); Northern Coast Ranges 60 Comment
  UC1197204  Trifolium ciliolatum Joseph P. Tracy 1911-7-11 3510 Humboldt Hoopa Valley Northern Coast Ranges 152 Comment
  UC1223476  Trifolium depauperatum var. depauperatum Joseph P. Tracy 1941-4-26 16864 Humboldt Kneeland Prairie 762 Comment
  UC1103442  Trifolium depauperatum var. depauperatum Joseph P. Tracy 1916-4-30 4684 Humboldt Bucksport Northern Coast Ranges, Eureka 60 Comment
  UC179921  Trifolium dubium Joseph P. Tracy 1914-7-4 4522 Humboldt between Korbel and Angels Ranch roadside; Northern Coast Ranges Comment
  UC1197211  Trifolium eriocephalum var. eriocephalum Joseph P. Tracy 1930-6-29 8822 Humboldt nw slope Buck Mtn (lower foothills); Northern Coast Ranges Comment
  RSA168859  Trifolium hybridum Joseph P. Tracy 1938-6-15 15926 Humboldt Salmon Creek Flats, south end Humboldt Bay. Comment
  HSC59064  Trifolium incarnatum Thomas Wood 1979-4-6 95 Humboldt On Hwy. side W of 2nd bridge overpass from Eureka, on Gunther Island Comment
  HSC77334  Trifolium incarnatum C. J. Thomas 1983-5-9 28 Humboldt Adjacent to Hwy. overpass walkway near HSU 23 Comment
  HSC58628  Trifolium longipes Overton, Butler 1979-7-31 11447 Humboldt Near Water Dog Lakes, close to the town of Hoopa 1830 Comment
  HSC71336  Trifolium longipes J. P. Smith 1976-5-30 8828 Humboldt Near Black Rock on road to Clear Lake 1524 Comment
  HSC75475  Trifolium longipes J. O. Sawyer 1980-7-18 3622 Humboldt North Trinity Mountain Research Natural Area, north of Mill Creek Lake to Red Cap Hole. Comment
  HSC44836  Trifolium longipes subsp. oreganum Thomas W. Nelson, Jane P. Nelson 1977-6-19 3520 Humboldt SW of Alder Springs along Rd. 2S08 1463 Comment
  UC1223331  Trifolium longipes var. oreganum Joseph P. Tracy 1933-7-11 12698 Humboldt between Horse Mt. and Grouse Mt. (near Clear Lake) Comment
  UC495658  Trifolium longipes var. oreganum Joseph P. Tracy 1927-6-12 8122 Humboldt Horse Ranges Northern Coast Ranges Comment
  HSC15218  Trifolium macraei J. W. Johnson 1961-5-27 1386 Humboldt Arcata, Christenson Farm on the Samoa Peninsula Comment
  HSC45138  Trifolium microcephalum R. Sutherland 1978-5-25 1 .25578 Humboldt Near the Mattole River 288 Comment
  UC1103448  Trifolium microcephalum Joseph P. Tracy 1929-5-5 8574 Humboldt along Sout Fork Eel River (Miranda); Northern Coast Ranges 121 Comment
  CHSC52933  Trifolium microdon L. P. Janeway 1984-5-16 786 Humboldt On the North Spit of Humboldt Bay; on the west side of Samoa Rd ca. 1/4 mile north of the boat ramp. 3 Comment
  UC1223347  Trifolium microdon Joseph P. Tracy 1944-5-14 17471 Humboldt Bucksport Comment
  UC1197521  Trifolium obtusiflorum Joseph P. Tracy 1911-6-11 3241 Humboldt Trinidad Station Northern Coast Ranges 91 Comment
  JEPS4443  Trifolium oliganthum Joseph P. Tracy 1921-4-24 5438 Humboldt facing South Fork of Eel River (Phillipsville); Northern Coast Ranges 121 Comment
  UC175151  Trifolium oliganthum Joseph P. Tracy 1913-6-22 4269 Humboldt opposite Buck Mtn (Dinsmore's Ranch); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  RSA249709  Trifolium repens Robert F. Thorne, Percy C. Everett, K. Thorne 1965-8-8 35250 Humboldt N. edge of Eureka, E. of Hwy. 101 5 Comment
  UC1223537  Trifolium variegatum var. melananthum Joseph P. Tracy 1936-6-28 15010 Humboldt e Korbel (near Murphy Meadows on mtn); Bald Mtn Comment
  UC1223541  Trifolium variegatum var. variegatum Joseph P. Tracy 1933-5-20 12253 Humboldt near Petrolia (hills betw town and Ocean) Comment
  HSC49043  Trifolium willdenovii Patricia Shesgreen 1978-5-6 71 Humboldt Arthur W. Way Memorial Park campground. 100 yds. N of Mattole River. Comment
  UC495687  Trifolium willdenovii Joseph P. Tracy 1932-5-16 10110 Humboldt near Samoa; Northern Coast Ranges, Humboldt Bay 6 Comment
  SEINET12157351  Trifolium willdenovii J. P. Tracy 1942-1 17358 Humboldt 1 mi NE of Garberville on road to Harris 305 Comment
  UC1197536  Trifolium willdenovii Joseph P. Tracy 1906-6-4 2534 Humboldt near Hydesville (Yager Creek); Northern Coast Region 60 Comment
  HSC62989  Triglochin maritima David Wheeler 1979-4-22 79 Humboldt Mad River Slough, 1 mi. W of the intersection of Mad River Rd. and Iverson Rd. Comment
  HSC36439  Triglochin maritima John Rehling 1974-7-8 8 Humboldt Big Lagoon Bog Comment
  UCR179285  Trillium R. G. Swinney 1968-3-8 217 Humboldt Arcata 152 Comment
  HSC15715  Trillium albidum D. W. Snell 1964-4-18 46 Humboldt Mad River bottom 3 mi. N of Blue Lake Comment
  UC1197811  Trillium angustipetalum Mrs. Jennie Worthington 1931-3-22 Humboldt Weitchpec 121 Comment
  CHSC24929  Trillium ovatum P. Goldman 1976-3-28 6 Humboldt Ca. 20 ft se of the road towards Fern Canyon State Park, ca. 4.7 mi from the end of road at Fern Canyon, ca. 100 mi s of Crescent City. 0 Comment
  UC1222528  Trillium ovatum Joseph P. Tracy 1950-4-20 18613 Humboldt 1 mi. w. Dinsmore's (on Van Duzen R.); Van Duzen R. Comment
  HSC26329  Triphysaria eriantha subsp. eriantha Thomas W. Nelson 1971-4-16 382 Humboldt N of Coast Guard Station on Samoa Peninsula Comment
  JEPS884  Triphysaria eriantha subsp. eriantha Harley P. Chandler May, 1901 1142 Humboldt Humboldt Bay; North Coast Ranges, Humboldt Bay 3 Comment
  UC1198038  Triphysaria eriantha subsp. eriantha Joseph P. Tracy 1917-5-30 4805 Humboldt Little River Beach; Northern Coast Ranges, Little River Beach 6 Comment
  UC902248  Triphysaria versicolor subsp. faucibarbata Joseph P. Tracy 1944-5-14 17469 Humboldt Eureka 6 Comment
  JEPS72932  Trisetum canescens Lincoln Constance 1934-5-23 612 a Humboldt se slope of mountain above Look Prairie 365 Comment
  UC1103148  Trisetum canescens Joseph P. Tracy 1917-5-30 4789 Humboldt Dows Prairie; Northern Coast Ranges 60 Comment
  UC1103150  Trisetum canescens J. P. Tracy 1900-7-4 877 Humboldt opposite Eureka (Sand Hills of Ocean Beach at Samoa); Samoa Comment
  UCD93602  Trisetum canescens P. B. Kennedy 1923-8-2 s.n. Humboldt Bluff Creek to Arcata. Comment
  SEINET244120 Image available Trisetum cernuum Joseph P. Tracy 1918-4-21 4881 Humboldt Openings in moist woods 'Newell's Camp' on old Kneeland Prairie Road. 305 Comment
  UC40083  Trisetum cernuum Harley P. Chandler May, 1901 1176 Humboldt Humboldt Bay; North Coast Ranges 30 Comment
  UC526697  Trisetum cernuum Joseph P. Tracy 1926-5-22 7502 Humboldt Prairie Creek; Northern Coast Ranges 152 Comment
  UC666915  Triteleia hyacinthina Joseph P. Tracy 1930-7-6 8843 Humboldt in moist places Kneeland Prairie Comment
  SEINET181190  Triteleia laxa Bassett Maguire, Ruth Maguire; C. B. Maguire 1934-6-8 15085 Humboldt 5 miles north of Garberville Comment
  UC144105  Triteleia laxa J. P. Tracy 1909-7-18 3013 Humboldt immediate vicinity of Eureka 0 Comment
  CAS-BOT-BC526352  Triteleia laxa Joseph P. Tracy 1930-7-6 8841 Humboldt Kneeland Prairie 762 Comment
  CAS-BOT-BC526357  Triteleia laxa L. R. Abrams 1918-6-14 7089 Humboldt Korbel to Three Creeks near March's ranch Comment
  HSC26871  Triteleia laxa Clifton Raymond Chesbrough 1973-6-19 95 Humboldt 0.5 mi. N of College Cove along coast Comment
  RSA183021  Triteleia laxa Lee W. Lenz 1966-5-24 24657 Humboldt W of Berry Summit, US 299. Comment
  UC1225864  Triteleia peduncularis Joseph P. Tracy 1942-6-15 17123 Humboldt near Redcrest Resort (Englewood); Englewood 91 Comment
  HSC28303  Tsuga heterophylla Gary S. Lester 1973-12-8 63 Humboldt Comment
  SDSU2008  Tsuga heterophylla D. F. Howe 1963-7-7 3616 Humboldt 5 miles north of Orick on #101. Comment
  UC303180  Ulex europaeus Joseph P. Tracy 1923-11-24 6594 Humboldt Eureka Northern Coast Ranges, Eureka 0 Comment
  HSC59566  Umbellularia californica Rick Lundquist 1979-4-22 26 Humboldt 8.4 mi. up Fickle Hill Rd. from 11th St. across from HSU observatory 610 Comment
  HSC95838  Umbellularia californica Kevin Thomas 2004-4-26 13 Humboldt Lord Ellis Summit along Titlow Hill Rd., rd. turnout Comment
  UC1585363  Umbellularia californica R. Raiche, K. Zadnik, and H. Forbes 1989-2-10 Humboldt just w of Pine Ridge Summit (w of Hoopa, Bair Road); Bair Road 840 Comment
  HSC21672  Urtica dioica subsp. gracilis R. D. Zortman 1963-5-5 34 Humboldt 5 mi. NE of Arcata, S of the Mad River, off Warren Creek Rd. 91 Comment
  SEINET200747  Urtica urens Joseph P. Tracy 1922-7-16 6103 Humboldt Eureka. 0 Comment
  UC1197773  Vaccinium cespitosum J. P. Tracy 1901-4-7 1007 Humboldt immediate vicinity Eureka 0 Comment
  HSC98063  Vaccinium membranaceum Cara Witte 2007-7-12 524 Humboldt Forest Service Road 5N10C. Approximately 1 mile south for intersection with Ammon Ridge Road. 1252 Comment
  CAS-BOT-BC199311  Vaccinium ovatum Hubert O. Jenkins 1943-8-1 s.n. Humboldt In dry rocky bed of Eel River, Richardson Grove Comment
  HSC7907  Vaccinium ovatum J. Pursell 1964-10-11 10112 Humboldt Old Hwy. 101, 3 mi. N Patricks Point State Park Comment
  HSC7910  Vaccinium ovatum Dan O'Brien 1962-5-20 Humboldt 0.5 mi. E of Humboldt State University campus Comment
  HSC91895  Vaccinium ovatum E. Mackey 1986-10-7 Humboldt Patricks Point State Park, Palmer's Point Rd. Comment
  UC484083  Vaccinium ovatum Carl B. Wolf 1930-10-24 Humboldt 2 mi below mouth of Salmon River; Klamath River 152 Comment
  UC314631  Vaccinium uliginosum subsp. occidentale Joseph P. Tracy 1924-7-13 6725 Humboldt Big Lagoon Northern Coast Region 6 Comment
  SEINET12335251  Valeriana sitchensis F. H. Utech, Sato, T.; Ohara, M. 1990-1 90 -313 Humboldt Six Rivers National Forest, 0.5 mi S of CA 199 on French Hill Rd (USFS Rd 411) 150 Comment
  HSC58189  Vancouveria hexandra G. L. Clifton, Griswold 1979-8-2 12280 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  UC1537345  Vancouveria hexandra Gordon H. True Jr. 1936-5-12 470 Humboldt 5 mi s Kneeland; s of Kneeland 457 Comment
  HSC26868  Vancouveria hexandra Clifton Raymond Chesbrough 1973-6-19 91 Humboldt 1/2 mi. N of College Cove Comment
  HSC30400  Vancouveria hexandra J. D. Ackerman, A. M. Montalvo 1974-7-17 376 Humboldt Grizzly Creek State Park, along Hwy. 36, between Carlotta and Bridgeville Comment
  HSC37714  Vancouveria hexandra J. D. Ackerman, A. M. Montalvo 1974-7-17 375 Humboldt Redwood Grove, E of Van Duzen Co. Park, off Hwy. 36, E of Carlotta 61 Comment
  SJSU1032  Vancouveria hexandra A. C. Browne 1950-5-23 Humboldt Weott Comment
  HSC74645  Vancouveria planipetala M. A. Baker 1980-5-17 1220 Humboldt Near Le Perron Peak 792 Comment
  UC303001  Vancouveria planipetala Joseph P. Tracy 1926-5-2 7420 Humboldt Trinity River Valley near the South Fork; Northern Coast Ranges, Trinity River Valley nr South Fork 182 Comment
  UC120019  Velezia rigida Chandler Humboldt Humboldt Bay Comment
  UC1198212  Veratrum californicum var. californicum Joseph P. Tracy 1932-7-20 10733 Humboldt Corral Prairie Trinity Summit 1584 Comment
  JEPS86092  Veratrum californicum var. californicum Wayne Roderick 1966-6-28 Humboldt 9 mi e Bridgeville 609 Comment
  UC1225852  Veratrum insolitum Joseph P. Tracy 1948-8-15 18120 Humboldt on Ridge 2 mi e Grove's Prairie; Trinity Summit 1524 Comment
  CAS-BOT-BC527058  Veratrum viride var. eschscholzianum L. B. Kildale 1930-8-10 10206 a Humboldt Snow Camp, head of Redwood Creek Comment
  UC582590  Verbascum blattaria Joseph P. Tracy 1937-6-26 15366 Humboldt Trinity River Valley at Willow Creek; Trinity River Valley at Willow Creek 152 Comment
  HSC27420  Verbena lasiostachys Thomas W. Nelson 1970-9-3 213 Humboldt Mad River. Comment
  HSC55630  Veronica americana Walter Overton, Marvin Butler 1979-7-24 9628 Humboldt Near Titlow Hill, close to the town of Willow Creek 1250 Comment
  HSC56108  Veronica americana G. L. Clifton 1979-7-31 11860 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  UC175797  Veronica americana Joseph P. Tracy 1912-6-9 3685 Humboldt Alton; Northern Coast Region, Alton 30 Comment
  UC1011936  Veronica americana F. W. Pennell and J. P. Tracy 1940-7-7 26088 Humboldt headwaters of Willow Creek, Route 299 Willow Creek 762 Comment
  HSC21215  Veronica persica J. L. Baker 1965-3-9 1 Humboldt 4 mi. N of Arcata on N Bank Rd. Comment
  HSC63853  Veronica serpyllifolia subsp. humifusa M. A. Baker 1979-6-27 920 Humboldt Edge of Hoopa Indian Reservation Comment
  HSC72498  Veronica serpyllifolia subsp. humifusa J. P. Smith, Steve Selva 1970-6-30 4135 Humboldt Comment
  RSA800193  Vicia Robert F. Thorne, Percy C. Everett 1965-8-8 35242 Humboldt N. edge of Eureka, E. of Hwy. 101 5 Comment
  HSC70657  Vicia americana var. americana Gail Newton 1980-7-14 1534 Humboldt Near Deadman Ridge 1097 Comment
  HSC98614  Vicia americana var. americana Cara Witte 2008-7-2 803 Humboldt Forest Service Road 4N38. 2 miles north of intersection to Board Camp Lookout. Near gate. 1401 Comment
  UC1197477  Vicia americana var. americana Joseph P. Tracy 1933-5-20 12255 Humboldt near Petrolia (Mattole River); North Coast Region, Mattole River 15 Comment
  UC1222598  Vicia americana var. americana Joseph P. Tracy 1946-6-15 17569 Humboldt w of Redwood Creek (on Trinity Highway, at Green Point); Green Point 457 Comment
  JEPS66176  Vicia hassei Lincoln Constance 1934-6-6 826 Humboldt Dyerville to Horse Prairie (fire trail); South Fork Eel River, Bull Creek Region Comment
  HSC38207  Vicia hirsuta Thomas W. Nelson 1976-4-20 2381 Humboldt 12th and B St., Arcata Comment
  HSC48377  Vicia sativa subsp. nigra Mark Flippo 1978-4-18 40 Humboldt Mckinleyville, Hill Top Rd. Comment
  RSA518642  Vicia tetrasperma Barbara Ertter, Thomas J. Delendick 1987-5-16 6912 Humboldt Hwy 299, ca 8 mi E of Arcata, 9.5 mi W of Lord Ellis summit. Comment
  UCD108796  Vicia tetrasperma Frederica Bowcutt 1989-5-23 1331 b Humboldt Sinkyone Wilderness State Park. Bear Harbor, 2.5 air miles SE of Needle Rock ranch house, 4 air miles SE of Four Corners, 15 air miles SW of Garberville. Old home sites. 12 Comment
  BLMAR258  Viola adunca Jennifer Anthony-Wheeler 1998-4-22 258 Humboldt King range, strawberry rock grazing allotment 280 Comment
  CAS-BOT-BC263939  Viola adunca Alice Eastwood 1907-4-21 31 Humboldt Trinidad Comment
  CAS-BOT-BC263952  Viola adunca L. B. Kildale 1926-3-30 1537 Humboldt Big Lagoon Comment
  HSC96079  Viola adunca Andrew Byers, Stuart E. Richardson, III 2005-6-10 8 Humboldt 7.4 mi. S of Hwy. 299 on NF1; Coldspring Camp 1357 Comment
  RSA12423  Viola adunca Carl B. Wolf 1934-7-2 5871 Humboldt At edge of small lake at Snow Camp. (Mts. east of Korbel). 1372 Comment
  RSA46845  Viola adunca Doris K. Kildale 1927-7-10 3723 Humboldt Gans Prairie, Bald Hills. Comment
  HSC21790  Viola glabella Lincoln Constance 1934-5-26 652 Humboldt Bull Creek Region; N Dyerville Flat grove near Founder's Tree 49 Comment
  HSC64215  Viola glabella J. O. Sawyer, M. A. Ericksen 1979-6-23 3386 Humboldt Slopes below Mill Creek Lakes 1585 Comment
  CAS-BOT-BC536496  Viola glabella A. M. Vollmer; L. Beane 1951-6-8 134 Humboldt Grizzly Camp, State Hwy 36 Comment
  UC1198447  Viola glabella Joseph P. Tracy Jul 16 1930-Jul 19 1930 9020 Humboldt forest near McKay Camp; Northern Coast Ranges, South Fork Mountain 1676 Comment
  JEPS80008  Viola lobata subsp. integrifolia Joseph P. Tracy 1937-7-2 15408 Humboldt head of Little Hors-Linto Creek (Trinity Summit); , Little Hors-Linto Creek 1371 Comment
  HSC101993  Viola macloskeyi M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-12 892 Humboldt Patterson Meadows 1555 Comment
  JEPS91197  Viola macloskeyi subsp. macloskeyi Dean W. Taylor 1970-5-8 328 Humboldt Sphagnum bog North of Arcata; ; Sphagnum bog North of Arcata 3 Comment
  UC1198431  Viola ocellata Joseph P. Tracy 1948-5-31 18007 Humboldt Harris 762 Comment
  CAS-BOT-BC270153  Viola palustris M. Louise Hutchinson 1913-5-1 s.n. Humboldt Eureka Comment
  HSC67183  Viola purpurea subsp. integrifolia Thomas W. Nelson, Jane P. Nelson 1980-6-10 5434 Humboldt Along E side of Red Mtn. 1372 Comment
  HSC73542  Viola purpurea subsp. purpurea Gail Newton 1980-7-14 1478 Humboldt Near Last Chance Ridge. 1219 Comment
  HSC21856  Viola sempervirens H. E. Parks, S. T. Parks Apr 1944 24268 Humboldt Spruce Cove, Trinidad 61 Comment
  HSC34643  Viola sempervirens Thomas Anthony 1975-4-8 4 Humboldt E of HSU tennis courts on ridge facing Fern Lake from W Comment
  UC1198426  Viola sempervirens Joseph P. Tracy 1921-2-27 5416 Humboldt Bear Creek Flat near Pepperwood (along Eel River from South Fork to Scotia); Northern Coast Ranges, Eel River, Bear Creek Flat 60 Comment
  UC1762495  Viola sheltonii Milo S. Baker 1946-6-14 11491 Humboldt South Fork Mtn. 1524 Comment
  UC1197980  Vitis californica Joseph P. Tracy 1933-7-3 12630 Humboldt Trinity River Valley, at Willow Creek. 152 Comment
  UC249594  Vitis californica Joseph P. Tracy 1922-9-3 6109 Humboldt Klamath River at Bluff Creek Bluff Creek; Northern Coast Ranges, Klamath River, Bluff Creek 91 Comment
  HSC37933  Vulpia bromoides Peter Sorensen 1976-6-14 Humboldt N Spit Comment
  HSC9836  Vulpia bromoides J. A. Waller 1965-5-16 47 Humboldt Open field near Big Lagoon. Comment
  CHSC19731  Vulpia microstachys D. E. Anderson; J. O. Sawyer, J. P. Smith 1970-5-10 5070 Humboldt Ca. 3 miles west of Willow Creek along Three Creeks Road. Comment
  HSC32482  Vulpia microstachys Bonnie Prange 1974-5-18 Humboldt Off Hwy. 299 at China Slide. Comment
  HSC35018  Vulpia microstachys Thomas W. Nelson 1975-5-24 1878 Humboldt McKeown Ranch, N of Dinsmore. Comment
  RSA183526  Vulpia microstachys D. E. Anderson 1965-5-8 3648 Humboldt 3 miles N of Willow Creek along road on E side of Trinity River. Comment
  UC204712  Vulpia microstachys var. microstachys Joseph P. Tracy 1918-5-26 4942 Humboldt Redwood Creek Northern Coast Ranges, Grouse Mt. (lower foothills of Grouse Mt) 762 Comment
  UC525670  Vulpia microstachys var. microstachys Joseph P. Tracy 1926-5-1 7450 Humboldt Redwood Creek Northern Coast Ranges (at Berry's) 274 Comment
  HSC65449  Vulpia myuros J. P. Smith 1973-5-26 6796 Humboldt Scotia Bluffs along the Eel River near Rio Dell. Comment
  HSC70383  Vulpia myuros M. A. Baker 1980-6-7 1792 Humboldt Near Brush Mtn. 1128 Comment
  HSC9939  Vulpia myuros R. H. Berg 1963-4-18 54 Humboldt Arcata Bottoms, Arcata. Comment
  UCD94900  Vulpia myuros A. H. Murphy 1951-5-18 39 Humboldt Cook Ranch, 1/2 mile northwest of Petrolia. Comment
  UC1145203  Vulpia myuros var. hirsuta Joseph P. Tracy 1941-3-26 16836 Humboldt Willow Creek; Trinity River Valley 152 Comment
  UC525656  Vulpia myuros var. hirsuta Joseph P. Tracy 1925-5-17 6968 Humboldt near The South Fork (Trinity River Valley); Northern Coast Ranges, Trinity River Valley 182 Comment
  HSC79517  Vulpia octoflora var. octoflora Kenneth Clark 1980-3-24 543 Humboldt Shelter Cove, N fork of Dead Man's Gulch. 76 Comment
  CHSC63409  Whipplea modesta Vernon H. Oswald 1994-6-29 6365 Humboldt Friday Ridge Rd. (Forest Rd. 6N08) 7.3 mi N of Titlow Hill Rd., 0.8 mi S of Brush Mtn. Lookout Rd., S of Hwy. 299 and Willow Creek. Common groundcover on shaded forest edge. 975 Comment
  HSC41845  Whipplea modesta N. G. Sugihara 1977-4-23 14 Humboldt 2.5 mi. S of Shelter Cove Rd., S Fork of Bear Creek at Wailaki Campground 561 Comment
  UC1198901  Whipplea modesta Joseph P. Tracy 1908-6 2728 Humboldt opposite Buck Mountain; Northern Coast Ranges, valley of Van Duzen River 762 Comment
  CAS-BOT-BC77811  Woodwardia fimbriata Carl Duncan 1920-9-22 s.n. Humboldt Hoopa Valley Comment
  CAS-BOT-BC77814  Woodwardia fimbriata Kenneth Clark 1980-6-14 678 Humboldt north fork Dead Man's Gulch 83 Comment
  HSC13047  Woodwardia fimbriata Jana Kattenhorn 1970-10-24 122 Humboldt H.S.C. Campus, Arcata, N side of building 53 Comment
  HSC44509  Wyethia angustifolia Brad Klipfel 1973-7-1 118 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC58195  Wyethia angustifolia G. L. Clifton, Griswold 1979-8-2 12294 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  SBBG60857  Wyethia angustifolia R. Hartwell 1938-8-5 Humboldt Mattole Rd, on the "Hump," near Capetown, above the sea Comment
  UC582645  Wyethia angustifolia Joseph P. Tracy 1933-8-6 12937 Humboldt French Camp Ridge 1066 Comment
  RSA246843  Xerophyllum tenax Robert F. Thorne, Percy C. Everett 1965-8-5 35144 Humboldt King Mountain 1220 Comment
  RSA256707  Xerophyllum tenax D. E. Anderson 1972-6-10 5728 Humboldt Along the Redwood Valley - Hoopa Road east of the summit Comment
  UC154242  Yabea microcarpa Joseph P. Tracy 1906-5-13 2454 Humboldt Humboldt Bay Northern Coast Region (sand dunes of ocean beach) Comment
  UC906657  Yabea microcarpa Joseph P. Tracy 1946-1-15 17519 Humboldt Willow Creek; Trinity River Valley 152 Comment
  UCSB26612  Zeltnera muehlenbergii Havlik, Neil 1968-8-22 Humboldt Bull Creek Flat; Humboldt Redwoods State Park Comment
  UC249566  Zigadenus micranthus var. micranthus Joseph P. Tracy 1921-5-30 5484 Humboldt Kneeland Prairie Northern Coast Ranges, Kneeland Prairie 762 Comment
  HSC21902  Zostera marina S. Estes 1964-4-4 17 Humboldt N Humboldt Bay Comment



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