Search Results — 2000 specimen records retrieved (1400 records with coordinates)
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Results for search: County=HUMBOLDT; Source=All;   

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(For large data reqests, please contact Jason Alexander, jason_alexander@berkeley.edu.)

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

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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  HSC55100  Abies concolor G. L. Clifton 1979-7-31 11814 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  HSC74318  Abies concolor Gail Newton 1980-7-20 1602 Humboldt Near Bell Swamps 1463 Comment
  UC502913  Abies concolor Joseph P. Tracy 1927-6-12 8144 Humboldt Horse Mountain 1524 Comment
  HSC31505  Abies grandis Steve Selva, Roger Jensen 1974-8-27 88 Humboldt Hwy 299 ca. 1.0 mi. E of Blue Lake Comment
  SD42383  Abies grandis Doris Kildale Niles 1941-7-25 Humboldt Arcata Comment
  SDSU1549  Abies grandis W. A. Bemis 1964-4-11 254 Humboldt Mad River, HWY 299. 76 Comment
  CHSC1071  Abronia latifolia M. Underhill 1952-7-13 Humboldt Seashore sand. 0 Comment
  HSC16136  Abronia latifolia S. J. Hawks 1965-5-13 55 Humboldt 1 mi. W of McKinleyville, past the end of Murray Rd. Comment
  RSA0025082  Abronia latifolia I. L. Wiggins 1930-7-7 4672 Humboldt Sand dunes near Samoa. Comment
  NY679513  Abronia umbellata subsp. breviflora H. E. Parks 09 1941 24212 Humboldt Mouth of Little River. Comment
  CDA40632  Acaena novae-zelandiae E. C. Whitney 1966-7-28 s.n. Humboldt Mather prop., Simpson Lumber Co., Fieldbrook. 0 Comment
  CAS-BOT-BC330545  Acer circinatum Joseph P. Tracy 1933-5-21 12213 Humboldt McClellan Mt., 5 miles E. of Bridgeville 670 Comment
  UC35020  Acer circinatum Harley P. Chandler June, 1901 1283 Humboldt Hupa Indian Reservation North Coast Ranges, Hupa Indian Reservation 1097 Comment
  HSC57655  Acer glabrum var. torreyi G. L. Clifton, Griswold 1979-7-25 10828 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1814 Comment
  HSC58071  Acer glabrum var. torreyi G. L. Clifton, Griswold 1979-8-1 11962 Humboldt Near Mill Creek Lakes, close to the town of Hoopa 1707 Comment
  CAS-BOT-BC331594  Acer macrophyllum C. B. Wolf; Johnson 1934-10-11 6756 Humboldt Redwood Highway, Eel River, 6.4 mi N of Humboldt Redwood Park Comment
  SEINET10905087  Achillea Mary Susan Taylor 1982-10-24 Taylor 5173 Humboldt T5N R1W nw sec 15. Eureka quad. Samoa, under bridge, ca. 1 mi nw of Eureka. Sea level. Sandy soils. 0 Comment
  HSC4572  Achillea millefolium Francis Winter 1960-5-14 Humboldt Samoa Peninsula, 6 mi. W of Arcata Comment
  HSC58329  Achillea millefolium Overton, Butler 1979-8-2 12629 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  HSC73648  Achillea millefolium M. A. Baker 1980-7-22 3117 Humboldt Near Grogan Hole. 1676 Comment
  HSC95116  Achillea millefolium Andrea Pickart 2002-7-3 153 Humboldt Big Dune, Lanphere Dunes Unit, Humboldt Bay National Wildlife Refuge 24 Comment
  CAS-BOT-BC28584  Achillea millefolium John Thomas Howell 1931-6-17 6718 Humboldt Mouth of Van Duzen River Comment
  HSC73179  Achlys triphylla M. A. Baker 1980-5-18 1295 Humboldt Near Black Mtn. 1006 Comment
  UC682049  Achnatherum lemmonii G. L. Stebbins Jr. and G. L. Church 1941-5-27 3113 Humboldt 4.1 mi w on road to Bridgeville Dinsmore's 762 Comment
  UCD50521  Achnatherum lemmonii Joseph P. Tracy 1951-6-26 19598 Humboldt At Board Camp Mountain, north side, at extreme head of Redwood Creek Comment
  HSC33760  Acmispon micranthus A. Montalvo 1975-5-24 276 Humboldt Samoa Dunes off Samoa Blvd., across from the boat landing Comment
  CHSC35605  Acmispon parviflorus Jame P. Smith 1973-5-26 6837 Humboldt Scotia Bluffs along the Eel River near Rio Dell. Comment
  HSC90187  Acmispon wrangelianus Jean Hanson 1980-5-24 54 Humboldt Indian (Gunther) Island, in Humboldt Bay, city of Eureka. W end of island Comment
  HSC55857  Actaea rubra G. L. Clifton, Griswold 1979-7-25 10846 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1784 Comment
  SEINET12094714  Actaea rubra F. H. Utech, Sato, T.; Ohara, M. 1990-1 90 -285 Humboldt Humboldt Redwoods State Park, Jensen Grove 50 Comment
  POM319488  Actaea rubra subsp. arguta Patricia Wilder 1968-8-22 4423 Humboldt Coastal rain forest 7 miles S of Ferndale on Mattole Road, N of Cape Mendocino and Capetown, Mt. Range: Bear River Ridge; Drainage Area: Oil Creek to Pacific. 549 Comment
  UC492186  Adenostoma fasciculatum W. L. Jepson and J. P. Tracy 1932-8-7 10337 Humboldt along rd. between Harris and Chamise Mt. (at point 3 mi. n. of s. boundary of Humboldt Co.); North Coast Ranges 762 Comment
Read comments
Oct 24 2018
  HSC54594  Adiantum aleuticum Overton, Butler 1979-7-24 9665 Humboldt Near Friday Camp, close to the town of Willow Creek. 1250 Comment
  RSA687732  Adiantum aleuticum Maude Minthorn s.n. Humboldt Ferndale Comment
  UC275411  Adiantum aleuticum Joseph P. Tracy 1925-11-25 7324 Humboldt near s fork Trinity River Valley; Northern Coast Ranges 182 Comment
  UCD137191  Adiantum jordanii Lincoln Constance 1934-6-4 823 Humboldt Bull Creek Region, South Fork Eel River. Comment
  CAS-BOT-BC65727  Adiantum pedatum Kenneth Clark 1980-6-14 691 Humboldt Point Delgada quad, north fork Dead Man's Gulch 83 Comment
  HSC100385  Adiantum pedatum Carl C. Marshall Jun 1885 111 Humboldt Damp woods. Comment
  CAS-BOT-BC202611  Aesculus californica Marcus E. Jones 1931-7-12 28938 Humboldt Alton Comment
  HSC58330  Agastache urticifolia Overton, Butler 1979-8-2 12630 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  HSC58060  Ageratina occidentalis G. L. Clifton, Griswold 1979-8-1 11936 Humboldt Near Mill Creek Lakes, close to the town of Hoopa. 1692 Comment
  SD62068  Agoseris apargioides var. maritima Darley F. Howe 1965-8-7 4121 Humboldt Orick. Comment
  HSC56444  Agoseris heterophylla Griswold, Butler 1979-7-12 7191 Humboldt Near Groves Prairie, close to the town of Willow Creek. 1256 Comment
  UC169332  Agoseris heterophylla var. heterophylla Joseph P. Tracy and Ernest B. Babcock 1912-5-11 3625 Humboldt near, (hillside between Hydesville and Alton) Hydesville; Northern Coast Ranges, Alton 30 Comment
  UC1199477  Agoseris heterophylla var. heterophylla Joseph P. Tracy 1925-5-30 7021 B Humboldt on grassy slopes McClellan Mountain; Northern Coast Ranges 822 Comment
  UC1199486  Agoseris heterophylla var. heterophylla Joseph P. Tracy 1938-6-9 15888 Humboldt top of ridge 3 mi w of Harris 914 Comment
  UC1222763  Agoseris heterophylla var. heterophylla Joseph P. Tracy 1942-6-15 17151 Humboldt .5 mi ne, on rd to Harris Garberville 304 Comment
  UC165756  Agoseris heterophylla var. heterophylla J. P. Tracy 1903-5-22 1875 A Humboldt on grassy hills Alder Point 152 Comment
  UC165996  Agoseris heterophylla var. heterophylla J. P. Tracy 1903-5-22 1875 Humboldt on grassy hills Alder Point 152 Comment
  UC249882  Agoseris retrorsa Joseph P. Tracy 1923-6-3 6256 Humboldt Kneeland Prairie; Northern Coast Ranges 762 Comment
  UCD92452  Agrostis Joseph P. Tracy 1936-6-10 14917 Humboldt Trinity River Valley, at Willow Creek. 152 Comment
  SEINET201009  Agrostis diegoensis Doris Kildale Humboldt Trinity Summit 1829 Comment
  CAS-BOT-BC127295  Agrostis exarata 1933-7-20 12809 Humboldt Along Mad River, near Blue Lake. 15 Comment
  HSC75270  Agrostis exarata J. O. Sawyer, M. A. Ericksen 1980-8-18 4058 Humboldt Slopes below Mill Creek Lakes, N Trinity Mtn. Research Natural Area 1707 Comment
  UC1103374  Agrostis exarata J. P. Tracy 1900-7-22 898 Humboldt vicinity Eureka 0 Comment
  UC526892  Agrostis exarata Joseph P. Tracy 1932-7-14 10550 Humboldt Wet Meadow at Corral Prairie Klamath Mountains, Trinity Summit 1524 Comment
  HSC58752  Agrostis gigantea Overton, Butler 1979-7-24 9620 Humboldt Near Titlow Hill, close to the town of Willow Creek. 381 Comment
  UC1145077  Agrostis hallii Joseph P. Tracy 1938-7-4 15982 Humboldt valley South Yager Creek; Valley of South Yager Creek 762 Comment
  UCD52704  Agrostis hallii Ray Evans 1956-7-19 s.n. Humboldt Bear River Ridge, 9 miles west of Ferndale. Comment
  UC1103394  Agrostis idahoensis Joseph P. Tracy 1935-7-27 14279 Humboldt Corral Prairie Trinity Summit, Corral Prairie 1584 Comment
  RSA126092  Agrostis stolonifera Joseph P. Tracy 1902-7-4 1758 Humboldt [Unspecified] Comment
  HSC34956  Aira caryophyllea Thomas W. Nelson 1975-5-24 1870 Humboldt McKeown Ranch, N of Dinsmore Comment
  SACT000322  Aira caryophyllea D. Shillingbury 1963-5-11 Humboldt sea level, coastal plain, coastal strand Comment
  SEINET201011  Aira praecox J. P. Tracy 1932-5-16 10103 Humboldt Near Samoa on Humboldt Bay north coast region 6 Comment
  HSC36299  Alisma triviale J. VanHorn 1973-11-17 3 Humboldt E side of Hwy. 101, 2 mi. S of Arcata. Comment
  SEINET199675  Allium amplectens J. P. Tracy 1936-6-17 14975 a Humboldt Little Van Duzen River at hwy crossing 0 Comment
  HSC38518  Allium falcifolium D. E. Anderson, J. P. Smith 1971-6-18 - 1082 Humboldt Horse Mtn. Comment
  HSC47990  Allium falcifolium B. Klipfel 1974-7-11 699 Humboldt Horse Mtn. Comment
  UCD138543  Allium hoffmanii Marc Baker 1980-7-11 2799 Humboldt near Red Mountain. 225 Comment
  UC666938  Allium siskiyouense Joseph P. Tracy 1933-7-16 12789 Humboldt along summit near Blake Lookout; Northern Coast Ranges, South Fork Mountain 1706 Comment
  UC666922  Allium unifolium Joseph P. Tracy 1935-6-8 13953 Humboldt along coast in front of South End of Stone Lagoon; Dry Lagoon 15 Comment
  HSC45073  Allium unifolium R. Sutherland 1978-4-23 35 .23478 Humboldt 451 Comment
  HSC42107  Allium validum Thomas W. Nelson, Jane P. Nelson 1977-8-6 3704 Humboldt Along S side of Lassic Peak 1463 Comment
  UC1197756  Allotropa virgata Arthur E. Connick 1926-5-1 Humboldt between Hoopa and Willow Creek (Northern Coast Ranges, Sugar Bowl Mountain); Northern Coast Ranges, Sugar Bowl Mountain 304 Comment
  CAS-BOT-BC171314  Alnus incana subsp. tenuifolia Joseph P. Tracy 1932-7-15 10605 Humboldt Ridges E of Corral Prairie 1828 Comment
  HSC3391  Alnus rubra J. W. Johnson 1962-3-15 1138 Humboldt Along Lanphere Lane near the swamp, Samoa Peninsula Comment
  UC484033  Alnus rubra C. B. Wolf 1930-10-26 1767 Humboldt near Redwood Highway Bridge (s edge of Lagoon); Big Lagoon 9 Comment
  CAS-BOT-BC169378  Alnus viridis subsp. sinuata Joseph P. Tracy 1930-7-16 9080 Humboldt Cool damp place along stream. S Fork Mountain, near McKay Camp 1676 Comment
  POM160842  Alnus viridis subsp. sinuata Joseph P. Tracy 1919-9-18 5241 Humboldt Trinity Summit. 1829 Comment
  UC54760  Alnus viridis subsp. sinuata Joseph Burtt Davy and Walter C. Blasdale 1899-5 5778 Humboldt Trinity Summit North Coast Ranges (Mendocino, Humboldt, and Del Norte Counties) 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
  UC1103316  Alopecurus aequalis Joseph P. Tracy 1924-8-31 6851 Humboldt Klamath R. at Bluff Creek; Northern Coast Ranges, Klamath R. 91 Comment
  UC187254  Alopecurus aequalis Joseph P. Tracy 1911-7-7 3400 Humboldt 3 mi. n.w. of junction of Willow Creek with Trinity R. (at meadows on mt. side, near Beebe's Ranch); Northern Coast Ranges 914 Comment
  HSC90772  Alopecurus geniculatus Gail Newton 1982-6-5 3588 Humboldt Elk River Wildlife Area, Eureka Comment
  RSA167287  Alopecurus geniculatus Joseph P. Tracy 1951-6-21 19524 Humboldt back of Everett Beck House (formerly George Fray) bed of former Goose Lake, Hydesville. Comment
  UC526860  Alopecurus geniculatus Joseph P. Tracy 1933-7-20 12802 Humboldt Arcata <Bottom> North Coast Ranges, Arcata <Bottom> 15 Comment
  HSC8894  Alopecurus pratensis D. J. McVean 1965-5-18 78 Humboldt Old Arcata Rd., S of intersection with Indianola Rd. Comment
  SEINET202725  Alopecurus saccatus J. P. Tracy 1951-6-21 19525 Humboldt Back of Everett Beck home (formerly George Gray) bed of former Goose Lake Hydesville Comment
  JEPS94282  Ambrosia chamissonis Vernon Oswald and Lowell Ahart 1997-9-4 8844 Humboldt Big Lagoon County Park at the sw edge of Big Lagoon Big Lagoon; North Coast Region, Big Lagoon County Park, Big Lagoon 3 Comment
  UC166090  Ambrosia chamissonis J. P. Tracy 1901-8-7 1265 Humboldt at, opposite Eureka Samoa; Ocean Beach Comment
  SEINET7014139  Ambrosia chamissonis R. Mastrogiuseppe, J. Mastrogiuseppe 1983-7-16 3491 Humboldt Dunes near Dry Lagoon. Comment
  HSC103292  Amelanchier alnifolia var. semiintegrifolia Michael G. Simpson, Michael Mesler, Michael Mayer 2008-5-27 3011 Humboldt Six Rivers National Forest; ~ 0.3 mi. south-southeast of Cold Spring Camp; ~ 3.3 aerial mi. south-southeast of Horse Mtn. Radio Tower. 1426 Comment
  HSC18526  Amelanchier alnifolia var. semiintegrifolia J. Sandborg, F. Sandborg 1968-7-19 60 Humboldt Bluff Creek near Notice Creek 793 Comment
Read comments
Nov 12 2013
  HSC41242  Amelanchier alnifolia var. semiintegrifolia Brad Klipfel 1974-5-27 384 Humboldt Horse Mtn. Comment
  UC54750 Image available Amsinckia intermedia Mrs. M. H. Manning 1901-1 156 Humboldt near Hupa; ; near Hupa Comment
  HSC100934  Amsinckia intermedia Miss Handy Jun 1886 342 Humboldt Maple Cr. & Salmon Cr. Comment
  UC525582  Amsinckia intermedia Joseph P. Tracy 1932-5-17 10097 Humboldt near mouth of Willow Creek; Northern Coast Ranges, Trinity River 152 Comment
  UC562471  Anagallis arvensis Joseph P. Tracy 1932-5-10 9936 Humboldt Bear R. Ridge Northern Coast Ranges, Bear R. Ridge 609 Comment
  HSC37912  Anaphalis margaritacea Peter Sorensen 1976-7-14 Humboldt Woodley Island Comment
  SEINET10904828  Anaphalis margaritacea Mary Susan Taylor 1977-8-2 Taylor 1427 Humboldt In mountains above and east of Eureka. Comment
  HSC56099  Anemone deltoidea G. L. Clifton 1979-7-31 11817 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  HSC56130  Anemone deltoidea G. L. Clifton, Griswold 1979-8-1 11942 Humboldt Near Mill Creek Lakes, close to the town of Hoopa. 1692 Comment
  SBBG2107  Anemone deltoidea H. and M. Dearing 1933-5-16 360 Humboldt Weott Comment
  HSC22553  Anethum graveolens Paul Shields Sep 1955 Humboldt 1 mi. S of Weott Comment
  UC1197383  Angelica genuflexa Joseph P. Tracy 1937-7-17 15442 Humboldt 2 mi s of Fields Landing (near Still Ranch); Northern Coast Region 6 Comment
  UC582653  Angelica genuflexa Joseph P. Tracy 1937-8-22 15670 Humboldt 2 mi s of Fields Landing 6 Comment
  UC582654  Angelica genuflexa Joseph P. Tracy 1937-8-22 15670 Humboldt 2 mi s of Fields Landing 6 Comment
  UC582655  Angelica genuflexa Joseph P. Tracy 1937-8-22 15670 Humboldt 2 mi s of Fields Landing 6 Comment
  UC1197381  Angelica genuflexa Joseph P. Tracy 1949-8-26 18509 Humboldt Happy Camp Mountain (In Trinity Summit Range, northeast of Hawkins Bar. 1280 Comment
  UC673052  Angelica genuflexa Joseph P. Tracy 1940-9-26 16725 Humboldt Eureka, near south city limits Eureka 6 Comment
  JEPS14103  Angelica hendersonii Joseph P. Tracy 1936-10-24 15205 Humboldt Table Bluff 91 Comment
  CDA38195  Angelica lucida Gordon Leppig 1998-6-18 839 Humboldt Route 101 on Humboldt Bay at mouth of Jacoby Creek. Comment
  UC126699  Angelica lucida John Matthiesen 1908-8-17 Humboldt Loleta Comment
  CAS-BOT-BC271497  Anisocarpus madioides L. R. Abrams 1918-6-15 7121 Humboldt Brannan Mt. near Willow Creek 1371 Comment
  HSC70410  Anisocarpus madioides M. A. Baker 1980-6-7 1831 Humboldt Near Ammon Creek 732 Comment
  HSC76418  Anisocarpus madioides Denis Kearns 1981-7-8 161 Humboldt Near Bluff Creek 622 Comment
  HSC56443  Antennaria howellii Griswold, Butler 1979-7-12 7190 Humboldt Near Groves Prairie, close to the town of Willow Creek. 1256 Comment
  HSC99533  Antennaria rosea subsp. rosea K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-28 198 Humboldt Near North Trinity Mtn and Water Dog Lakes, Six Rivers National Forest. 1826 Comment
  HSC41291  Antennaria suffrutescens Brad Klipfel 1974-7-27 489 Humboldt Horse Mtn. Comment
  HSC56940  Antennaria suffrutescens Overton, Butler 1979-7-23 9419 Humboldt Near Horse Mtn., close to the town of Willow Creek 1478 Comment
  UCD56156  Anthoxanthum aristatum K. L. Chambers 1984-6-16 5150 Humboldt Bald Hills Road, 7.0 miles past Lady Bird Johnson Grove, Redwood National Park, east of Orick. Comment
  HSC49816  Anthoxanthum occidentale R. York 1979-4-21 243 Humboldt Behind the town of Korbel Comment
  SEINET11682981  Anthoxanthum occidentale K. S. Erdman 1970-1 4797 Humboldt Cal-Barrow Road 3 mi E of US 101 at E boundary of Prairie Creek State Park (Redwood N.P.) Comment
  HSC8952  Anthoxanthum odoratum R. D. Zortman 1963-5-5 33 Humboldt 5 mi. NE of Arcata, S of the Mad River, off Warren Creek Rd. 91 Comment
  UC187269  Anthoxanthum odoratum Joseph P. Tracy 1906-4-29 2424 Humboldt Northern Coast Region, at Eureka Eureka; Northern Coast Region, Eureka 0 Comment
  UCD81681  Anthoxanthum odoratum Chuck Hughes 2009-6-18 101 Humboldt Near Arcata. NE corner of intersection of Old Samoa Road and Pacheco Road. 1 Comment
  HSC62743  Anthriscus caucalis J. M. DiTomaso 1979-4-21 882 Humboldt Clam Beach Comment
  JEPS45613  Aphanes occidentalis W. L. Jepson 1921-8-7 9337 a Humboldt Stone Lagoon; Humboldt Coast Comment
  UCD143195  Aphanes occidentalis Linda M. Barker 1976-4-30 1413 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  HSC3199  Apocynum androsaemifolium H. D. Sumner 1959-7-14 Humboldt Between Hoopa and Redwood Creek 305 Comment
  UC34969  Apocynum cannabinum Chesnut and Drew 1888-7-28 Humboldt Grouse Creek Comment
  HSC102054  Aquilegia formosa M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-13 959 Humboldt Forest edge surrounding Patterson Meadows 1566 Comment
  HSC46039  Aquilegia formosa var. formosa Catherine Chin 1978-5-5 52 Humboldt 5.1 mi. from Ferndale on Mattole Rd. Comment
  HSC99008  Aquilegia formosa var. formosa Cara Witte 2008-7-16 907 Humboldt Board Camp Mountain. Forest Service Road 4N38. 1/2 mile south of intersection with National Forest 1. 1409 Comment
  HSC56245  Aquilegia formosa var. truncata Walter Overton 1979-8-1 12348 Humboldt Near Packsaddle Ridge, close to the town of Hoopa 1341 Comment
  HSC73782  Arabis glabra Gail Newton 1980-6-28 701 Humboldt Near Mad River Butte. 1536 Comment
  UC161543  Arabis glabra Joseph P. Tracy 1906-5-13 2456 Humboldt Ocean Beach Northern Coast Region, Humboldt Bay Comment
  HSC98619  Arabis glabra var. glabra Cara Witte 2007-5-31 154 Humboldt Along National Forest Rte. 1, near Kinsey Ridge, 1.5 miles north of intersection with 4N09 1299 Comment
  HSC96269  Arabis puberula Eric Schori, Kazuyuki Ishimaru 2005-6-15 11 Humboldt 18 mi. S of Hwy. 299, above parking pullout 1400 Comment
  UC198606  Arabis subpinnatifida Joseph P. Tracy 1917-9-2 4838 Humboldt Grouse Mt. Northern Coast Ranges 1524 Comment
  HSC99596  Aralia californica Overton, Butler 1979-7-24 14090 Humboldt Near Titlow Hill, close to the town of Willow Creek. 1250 Comment
  HSC79369  Arbutus menziesii Kenneth Clark 1980-11-28 1050 Humboldt Above Point No Pass 488 Comment
  UC412751  Arbutus menziesii Mrs. M. H. Manning Apr. 1902 Humboldt Comment
  UC1225938  Arctostaphylos X media Joseph P. Tracy 1945-3-30 17505 Humboldt Eureka 45 Comment
  HSC7606  Arctostaphylos canescens Paul Shields May 1955 Humboldt 2 mi. N of Willow Creek Comment
  SEINET11984869  Arctostaphylos canescens Unknown 1965-1 543 Humboldt top of Chimisal Mountain, W of Wailaki Recreation Area, Bureau of Land Management Comment
  CAS-BOT-BC25209  Arctostaphylos canescens subsp. canescens J. P. Tracy 1941-4-11 16861 Humboldt Willow Creek Canyon, along Trinity Highway Comment
  CAS-BOT-BC23777  Arctostaphylos columbiana J. P. Tracy 1909-3-7 2944 Humboldt Immediate vicinity of Eureka 152 Comment
  CAS-BOT-BC23781  Arctostaphylos columbiana Joseph P. Tracy 1933-6-13 12583 Humboldt Hoopa Mountain. Near summit on road from Hoopa westward to Bair's. On ridge 1 mile S. of road. 1219 Comment
  CAS-BOT-BC23786  Arctostaphylos columbiana Joseph P. Tracy 1934-2-22 13134 Humboldt Vicinity of Trinidad 60 Comment
  CAS-BOT-BC23789  Arctostaphylos columbiana Walter Knight 1965-8-4 1157 Humboldt Shelter Cove - Thorn Jct. - approx. 4 mi. S of Mendocino-Humboldt Co. line. 365 Comment
  HSC33075  Arctostaphylos columbiana Thomas W. Nelson, J. D. Ackerman 1974-5-14 1264 Humboldt Beside old Samoa-Crannell railroad bed adjacent to the Mad River Slough N of Emerson Mill Comment
  JEPS38965  Arctostaphylos columbiana Joseph P. Tracy 1934-2-22 13141 Humboldt vicinity of Trinidad Northern Coast Region 60 Comment
  JEPS38976  Arctostaphylos columbiana Joseph P. Tracy 1934-2-22 13134 Humboldt vicinity of Trinidad Northern Coast Region 60 Comment
  SBBG5510  Arctostaphylos columbiana M. J. Cody 1938-7-15 Humboldt Trinidad Comment
  CAS-BOT-BC23738  Arctostaphylos columbiana C. Hart Merriam 1921-7-7 s.n. Humboldt Ridges west of Van Duzen River. Comment
  RSA70856  Arctostaphylos columbiana var. tracyi J. E. Adams 1935-5-12 1045 Humboldt Patrick's Pt. Comment
  HSC7633  Arctostaphylos glandulosa J. Pursell 1964-10-18 10185 Humboldt 5 mi. from Hwy. 299 on Bald Mtn. Road Comment
  UC1193023  Arctostaphylos glandulosa subsp. glandulosa R. E. Nelson 1950-7-26 146 Humboldt 1/2 mi nw Neafus Peak; Quad. 29D1 762 Comment
  RSA632800  Arctostaphylos knightii Jon E. Keeley 1996-10-13 27771 Humboldt Bald Hills Road, eastern end of Redwood National Park, 25 km west of Highway 96, north of Eureka. 700 Comment
  CAS-BOT-BC24475  Arctostaphylos manzanita Walter Knight; Irja Knight 1988-9-5 6362 Humboldt Bald Hill Road about 21.5 mi. from U.S. 101 en route to Hoopa. 929 Comment
  RSA633018  Arctostaphylos manzanita Jon E. Keeley 1996-10-13 27810 Humboldt Salyer Rest Area, east of Salyer, east of Willow Creek on Highway 299. 200 Comment
  CAS-BOT-BC24371  Arctostaphylos manzanita subsp. manzanita Doris K. Kildale 1927-3-10 2993 Humboldt Dobbyns Creek. Comment
  HSC55024  Arctostaphylos nevadensis Overton, Butler 1979-7-31 11436 Humboldt Near Water Dog Lakes, close to the town of Hoopa 1830 Comment
  SEINET11993007  Arctostaphylos nevadensis S. W. Edwards 1985-1 85 -52 Humboldt Horse Mt., due E Arcata 20 mi airline Comment
  CAS-BOT-BC40072  Arctostaphylos nevadensis subsp. knightii C. Hart Merriam 1918-9-24 s.n. Humboldt Between Redwood and klamath canyons, Bald Hills. Comment
  SEINET11989092  Arctostaphylos nevadensis subsp. knightii R. Gankin, Hildreth, W. R. 1967-1 1174 Humboldt 21.4 mi E of US 101 on Bald Hills Rd from Orick, French Camp Ridge Comment
  HSC98798  Arctostaphylos nevadensis subsp. nevadensis Cara Witte 2008-6-4 684 Humboldt Horse Mountain Botanical Area. Forest Service Road 6N38. 1232 Comment
  CAS-BOT-BC43981  Arctostaphylos uva-ursi Joseph P. Tracy 1945-3-30 17502 Humboldt Eureka 45 Comment
  CAS-BOT-BC43986  Arctostaphylos uva-ursi Joseph P. Tracy 1945-3-30 17498 Humboldt Eureka 45 Comment
  CAS-BOT-BC43989  Arctostaphylos uva-ursi C. B. Wolf 1931-8-30 2374 Humboldt Samoa, Humboldt Bay. 7 Comment
  CAS-BOT-BC47207  Arctostaphylos uva-ursi W. R. Dudley 1899-6-1 s.n. Humboldt Eureka penisnula. Comment
  HSC7734  Arctostaphylos uva-ursi Jerry Parker 1968-10-16 14 .1 Humboldt Foot of Murray Rd., McKinleyville Comment
  HSC77903  Arctostaphylos uva-ursi L. P. Janeway 1984-5-16 799 Humboldt N Spit of Humboldt Bay, on the W side of Samoa Road ca. 1/4 mi. NW of the boat ramp 5 Comment
  RSA183565  Arctostaphylos uva-ursi var. coactilis R. I. Bonn 1965-4-3 13 Humboldt Four miles west of Arcata on Lanphere Rd. Comment
  SEINET11987137  Arctostaphylos uva-ursi var. coactilis W. Knight, Knight, I. 1981-1 3993 Humboldt Tilden Botanic Garden, Berkeley, orig. from Table Bluffs near Eureka Comment
  CAS-BOT-BC526229  Arctotheca calendula G. D. Barbe; T. C. Fuller 1989-6-8 4321 Humboldt Larry Pries dairy, 3.4 mi W of Main Street, on Centerville Beach Road, Ferndale Comment
  RSA518162  Arctotheca calendula G. D. Barbe 1988-7-18 4293 Humboldt Ferndale: Larry Pries Dairy, 3.4 mi. W of Main St, on Centerville Beach Road. Comment
  HSC100712  Arnica amplexicaulis Carl C. Marshall Jun 1886 273 Humboldt Trail E of Hoopa. Comment
  HSC76342  Arnica cernua Teresa Prendusi 1981-7-9 207 Humboldt Near Cedar Camp 1268 Comment
  BLMAR524  Arnica discoidea Jennifer Wheeler 2009-6-23 524 Humboldt King range, On King Peak road Comment
  HSC64162  Arnica discoidea J. O. Sawyer, K. A. Sawyer 1979-6-24 3406 Humboldt Slopes alongside Aikens Creek. 366 Comment
  UC34161  Arnica discoidea Chesnut and Drew 1888-7-21 Humboldt S. Fork Mt. Comment
  HSC98817  Artemisia douglasiana Cara Witte 2007-9-3 642 Humboldt Forest Service Road 5N09. 1 mile east of intersection with National Forest 1. 1332 Comment
  UC1222997  Artemisia douglasiana Joseph P. Tracy 1948-9-6 18158 Humboldt at Willow Creek (Tracy's place); Trinity River Valley 152 Comment
  UC1222994  Artemisia pycnocephala Joseph P. Tracy 1947-8-31 17929 Humboldt Samoa Sand Dunes Comment
  HSC41318  Asarum caudatum Brad Klipfel 1974-9-2 533 Humboldt Horse Mtn. Comment
  HSC44110  Asarum caudatum Barbara Kelly 1977-4-23 307 Humboldt 2.5 mi. S of Shelter Cove Rd., S Fork of Bear Creek at Wailaki Campground 561 Comment
  HSC65686  Asarum caudatum M. A. Baker 1980-6-7 1858 Humboldt Near Ammon Creek 732 Comment
  POM118567  Asarum caudatum Marcus E. Jones 1924-4-26 s.n. Humboldt Scotia Comment
  UCR179286  Asarum caudatum R. G. Swinney 1968-3-28 232 Humboldt East of Humboldt State College, Arcata 152 Comment
  HSC47656  Asarum caudatum Sheila Logan 1978-4-10 181 Humboldt Arcata Community Forest, near PSW Experimental Lab Comment
  HSC99498  Asarum hartwegii K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-22 158 Humboldt Near North Trinity Mtn, along Forest Service Rd 10NO2, between two forks of Domingo Creek 1433 Comment
  UC154170  Asclepias cordifolia Harley P. Chandler June, 1901 1347 Humboldt Hupa Indian Reservation North Coast Ranges 152 Comment
  HSC56338  Asclepias speciosa Griswold, Butler 1979-7-10 6223 Humboldt Near Kinsey Ridge, close to the town of Willow Creek 1244 Comment
  UC35246  Asclepias speciosa Chesnut and Drew 1888-7-22 Humboldt Hy-Am-Pum Comment
  CAS-BOT-BC478833  Asparagus officinalis Henry M. Pollard 1946-9-1 s.n. Humboldt Near Wilson's Creek, Orleans region Comment
  HSC1051  Aspidotis densa D. E. Anderson 1961-9-3 1777 Humboldt Comment
  POM289176  Aster chilensis Lyman Benson 1928-7-10 448 Humboldt Clam Beach, Trinidad. 9 Comment
  RSA134590  Aster chilensis Percy C. Everett, E. K. Balls 1959-10-25 23960 Humboldt 14 miles W of Willow Creek on Hwy 299 to Arcata. 503 Comment
  HSC96346  Astragalus agnicidus Gordon Leppig 2001-6-25 2107 Humboldt PALCO land, edge of logging road. 700 Comment
  UC175639  Astragalus rattanii var. rattanii Joseph P. Tracy 1913-5-4 4051 Humboldt Kneeland Prairie Northern Coast Ranges, Kneeland Prairie 762 Comment
  CHSC118459  Astragalus umbraticus Courtney Wilson; Matt Groberg, Bob Meinke 2011-6-30 Humboldt On Green Diamond Resourse Company private land. Roadside edge on west slope of French Camp Ridge. 853 Comment
  CAS-BOT-BC69520  Athyrium filix-femina subsp. cyclosorum L. R. Abrams 1916-7-11 6053 Humboldt At mouth of Grizzly Creek on Van Duzon River. Comment
  RSA333466  Athyrium filix-femina subsp. cyclosorum Dave Kelly, W. Wisura 1985-7-30 4069 Humboldt 4.7 miles south of Orleans, along highway 96 Comment
  SDSU1603  Athyrium filix-femina var. cyclosorum D. R. Harvey 1938-8-13 2252 Humboldt Redwood Park. Comment
  HSC38380  Avena barbata Peter Sorensen 1976-5-29 Humboldt King Salmon Comment
  BLMAR35  Avena barbata Brad Barr 1982-6-21 35 Humboldt King range, elk enclosure Comment
  UCD56463  Avena sativa Joseph P. Tracy 1951-5-26 19511 Humboldt Trinity River Valley, at Willow Creek. 152 Comment
  HSC40410  Baccharis douglasii Thomas W. Nelson, James Nelson 1976-7-28 3061 Humboldt Beside SR 36 at Grizzly Creek Comment
  JEPS21315  Baccharis glutinosa W. L. Jepson 1932-7-24 16391 Humboldt Garberville, Tooey Ranch Garberville Comment
  RSA254757  Baccharis pilularis Thomas W. Nelson 1971-11-11 601 Humboldt Growing on the sand dunes at the foot of Murray Rd. McKinleyville Comment
  CAS-BOT-BC99989  Balsamorhiza deltoidea Harold E. Parks; Joseph P. Tracy 1935-6-16 11282 Humboldt Buck Mt. Lower NW slopes 792 Comment
  UC492246  Barbarea orthoceras Joseph P. Tracy 1928-4-22 8413 Humboldt along streamlet, Trinity River Valley, at Willow Creek 152 Comment
  RSA10095  Beckmannia syzigachne Joseph P. Tracy 1928-6-24 8472 Humboldt Valley of south Yager Creek Comment
  CDA38657  Bellardia trixago B. Villegas/D. Juliano 2010-6-17 PDR# 1535021 -A Humboldt Alderpoint: Garberville - Alderpoint Rd. 0 Comment
  CHSC67761  Bellis perennis Vernon H. Oswald 1997-2-12 8305 Humboldt Big Lagoon County Park at the SW edge of Big Lagoon. 3 Comment
  HSC5190  Bellis perennis A. E. Inman 1962-5-25 Humboldt Mad River, Lindsey Creek junction: N Bank; 100 yards W of Lindsey Creek Comment
  POM41982  Bellis perennis Marcus E. Jones 1924-4-26 s.n. Humboldt Eureka. Comment
  RSA187521  Bellis perennis John H. Thomas 1966-3-19 11489 Humboldt Near the M. G. Goethe Grove in Prairie Creek Redwoods State Park near Highway 101, between Eureka and Crescent city. Comment
  SEINET5707799 Image available Bellis perennis Suzanne E. May 1967-1 34 Humboldt On State Highway 36, 1 mile west of Bridgeville.; Bridgeville 183 Comment
  SFV18538  Bellis perennis M. Cavelti 2002-5-4 34 Humboldt On A street off 11th street, along western side of road. 20 Comment
  JEPS8443  Bensoniella oregona Rimo Bacigalupi with J. P. Tracy, L. Constance, R. Moran, R. L. Rodriguez, and S. Carlquist 1951-6-14 3416 Humboldt edge of meadow at Snow Camp High Prairie (ridge between Mad River and Redwood Creek (Bald Mountain ridge)); btw Mad River and Redwood Crk (Bald Mountain), High Prairie 1432 Comment
  HSC73147  Berberis aquifolium M. A. Baker 1980-5-18 1307 Humboldt Near Black Mtn. 1006 Comment
  UC1198384  Berberis aquifolium var. aquifolium Joseph P. Tracy 1948-9-5 18186 Humboldt on ridge 2 mi e Grove's Prairie (3 mi s of Grizzly Camp) 1524 Comment
  CAS-BOT-BC75805  Berberis pinnata Doris K. Kildale 1929-4-25 7433 Humboldt Kneeland Prairie. 792 Comment
  RSA167296  Bidens frondosa Joseph P. Tracy 1950-9-22 19367 Humboldt Klamath River, near Slate Creek, below Orleans 8 miles. 122 Comment
  SEINET11861631  Bidens frondosa J. P. Tracy 1950-9-22 19367 Humboldt Klamath River, near Slate Creek below Orleans 8 mi 122 Comment
  HSC37365  Blechnum spicant Gary S. Lester, Roger L. Yearout, Judith G. Dickson 1974-7-24 497 Humboldt Along Lost Man Creek. 38 Comment
  UC562687  Boechera retrofracta Joseph P. Tracy 1935-7-30 14379 Humboldt Salmon Summit 2103 Comment
  UC562689  Boechera sparsiflora Joseph P. Tracy 1935-7-31 14391 Humboldt ridge connecting Trinity Summit with Salmon Summit; Devils Backbone 1676 Comment
  UC572212  Bolboschoenus maritimus H. S. Yates 1936-6-16 5673 Humboldt 1 mi ne Samoa; Eureka Quad., ne of Samoa Comment
  HSC93472  Bolboschoenus maritimus subsp. paludosus Gordon Leppig 1998-6-25 851 Humboldt Hwy. 101 marker 81.60, brackish ditch on E side of Hwy. 2 Comment
  UC585961  Boschniakia strobilacea Joseph P. Tracy 1925-6-7 7059 Humboldt Northern Coast Ranges, Willow Creek Canyon. 609 Comment
  HSC102034  Botrychium multifidum M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-13 937 Humboldt Patterson Meadows 1555 Comment
  UC492218  Boykinia major Joseph P. Tracy Jul 16 1930-Jul 19 1930 8935 Humboldt South Fork Mountain Northern Coast Ranges, South Fork Mountain (in wet meadow at McKay Camp) 1676 Comment
  HSC96467  Boykinia occidentalis Gordon Leppig 1997-6-19 464 Humboldt Big Lagoon County Park, Big Lagoon Bog 3 Comment
  BLMAR241  Boykinia occidentalis Jennifer Anthony-Wheeler 1997-6-13 241 Humboldt King range, growing at base of N bank of S fork bear creekbed 463 Comment
  CAS-BOT-BC420259  Boykinia occidentalis A. A. Heller 1937-6-11 15893 Humboldt along U.S. Highway #101 between Bishop Pine Lodge and Big Lagoon Comment
  CAS-BOT-BC420274  Boykinia occidentalis Milo S. Baker 1923-9-19 84 Humboldt Canon near Carlotta Comment
  HSC67082  Boykinia occidentalis Richard Spjut 1980-5-19 6198 Humboldt Between Willow Creek and Hoopa along Hwy. 96 Comment
  HSC79476  Boykinia occidentalis Kenneth Clark 1980-3-23 530 Humboldt Along S Fork of Dead Man's Gulch 61 Comment
  RSA245277  Boykinia occidentalis Brad W. Klipfel 1973-8-17 269 Humboldt Big Lagoon Co. Park. Comment
  CDA14234  Brassica rapa R. Spadoni 1998-5-11 s.n. Humboldt Hwy 299 near Blue Lake. 0 Comment
  UCR104577  Brassica rapa A. R. Alexander 1998-4-9 8 Humboldt US Highway 101 and Giuntoli Lane, near shopping center, Arcata 152 Comment
  UC581795  Brickellia californica Joseph P. Tracy 1931-10-18 9736 Humboldt Camp Grant, along Eel River, 2-5 mi e of the South Fork Eel River 45 Comment
  CAS-BOT-BC145429  Briza maxima Joseph P. Tracy 1930-7-6 8848 Humboldt Iaqua. 762 Comment
  HSC103008  Briza maxima J. P. Smith 2014-5-20 13850 Humboldt Samoa Peninsula 6 Comment
  UC1145097  Briza maxima Joseph P. Tracy 1950-5-30 18711 Humboldt Willow Creek Trinity River Valley 152 Comment
  CAS-BOT-BC145568  Briza minor Ashley C. Browne 1936-6-11 s.n. Humboldt Patrick's Point State Park. Comment
  UCD57397  Briza minor A. H. Murphy 1951-4-18 14 Humboldt Tooby and Prior Ranch. 2 miles south of Blocksburg. Comment
  CAS-BOT-BC484216  Brodiaea elegans subsp. elegans Doris K. Kildale 1927-7-1 3618 Humboldt Alton Hill 30 Comment
  HSC35816  Brodiaea elegans subsp. elegans Thomas W. Nelson, Jane P. Nelson, James Nelson 1975-6-20 1920 Humboldt Above Goat Rock, 2 mi. W of Bridgeville 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
  RSA114096  Brodiaea stellaris Rimo C. Bacigalupi, Lincoln Constance 1951-6-13 3406 Humboldt Along State Highway 36, five miles east of Bridgeville. Comment
  SEINET200766  Brodiaea terrestris subsp. terrestris Joseph P. Tracy 1942-6-15 17125 Humboldt Englewood Natural prairie near Redcrest resort 91 Comment
  UC526848  Bromus carinatus var. carinatus H. E. Parks and Joseph P. Tracy 1934-7-6 11142 Humboldt Northern Coast Ranges, Iaqua Iaqua; Northern Coast Ranges, Iaqua 762 Comment
  CAS-BOT-BC155993  Bromus diandrus Doris K. Kildale 1926-5-2 1902 a Humboldt Willows Creek Flat. 152 Comment
  HSC9271  Bromus diandrus J. W. Johnson 1962-4-18 1268 Humboldt Along the lane below the W.M. Lanphere Home, Samoa Peninsula Comment
  SEINET200636 Image available Bromus diandrus Joseph P. Tracy 1904-5-1 2042 Humboldt Eureka 0 Comment
  SEINET11682985  Bromus hordeaceus K. S. Erdman 1970-1 4784 Humboldt Doleson Hill Prairie, Bald Hills Rd SE of Orick Comment
  RSA183636  Bromus marginatus D. E. Anderson 1965-5-8 3652 Humboldt About 3.5 miles north of Willow Creek along road running along east side of Trinity River Comment
  HSC9266  Bromus racemosus L. M. Malloy 1965-5-15 16 Humboldt N of Trinidad about 2 mi. on Trinity St. Comment
  UC1131259  Bromus sterilis H. S. Yates 1936-6-17 5714 Humboldt near Burr Valley 914 Comment
  UC1145178  Bromus tectorum Joseph P. Tracy 1942-5-16 17330 Humboldt between Miranda and Garberville 152 Comment
  UCD60242  Bromus vulgaris A. H. Shunk 1923-7-12 s.n. Humboldt Briceland. Comment
  HSC95586  Cakile edentula Andrea Pickart 2002-7-8 160 Humboldt N Spit Dunes, Mad River Co. Park, W of parking area 0 Comment
  UC161575  Cakile edentula J. P. Tracy 1901-8-7 1266 Humboldt Ocean Beach at Samoa, opposite Eureka Ocean Beach; Samoa, Ocean Beach Comment
  UC673075  Cakile edentula Joseph P. Tracy 1940-10-3 16739 Humboldt near Samoa (on Humboldt Bay); Humboldt Bay 3 Comment
  HSC31340  Cakile maritima Larry E. DeBuhr, G. Wallace 1972-5-22 608 Humboldt Prairie Creek Redwoods State Park Comment
  HSC6608  Cakile maritima D. E. Anderson 1961-9-2 1770 Humboldt 3 mi. S of Cape Mendocino. 3 Comment
  SEINET10481270  Cakile maritima Chester T. Dziekanowski, David B. Dunn; Charlene A. Bennett 1976-8-6 Dziekanowski 2502 Humboldt Collected in the vicinity of a state park on the beach opposite of mckinleyville. Vast colony of yellow lupinus arboreus. Comment
  RSA232640  Cakile maritima var. maritima Larry E. DeBuhr, P. Everett 1972-5-22 608 Humboldt On the beach at Prairie Creek. Redwoods Sate Park Comment
  CAS-BOT-BC185317  Calamagrostis foliosa Joseph Burtt Davy 1900-5-1 6602 Humboldt Hardy Creek. Comment
  HSC96469  Calamagrostis nutkaensis Gordon Leppig 1997-6-19 463 Humboldt Big Lagoon County Park, Big Lagoon Bog 3 Comment
  UC673026  Calandrinia ciliata Joseph P. Tracy 1933-7-3 12638 Humboldt Willow Creek Trinity River Valley 152 Comment
  HSC95579  Calandrinia ciliata Andrea Pickart 2002-3-14 6 Humboldt Samoa Dunes, BLM Endangered Plant Protection Area 0 Comment
  OBI7409  Calocedrus decurrens H. Wiedman July1966 s.n. Humboldt Near the Hoopa Valley Indian Reservation 366 Comment
  SBBG28816  Calocedrus decurrens D. K. Kildale 1926-8-15 2522 Humboldt Willow Crk Flat 152 Comment
  OBI36660  Calochortus coeruleus David J. Keil 1983-7-2 17309 Humboldt Ca. 4 mi SE of SR 299 along Titlow Hill Rd below Horse Mtn Summit Rd Comment
  UC1601652  Calochortus coeruleus Joseph Burtt Davy Jun 21 1899-Jun 23 1899 5744 1/2 Humboldt Trinity Trinity Summit Comment
  CAS-BOT-BC488620  Calochortus elegans var. nanus Doris Kildale Gillespie 1931-6-7 10586 Humboldt South Fork Mt., Blake Lookout 1726 Comment
  HSC32949  Calochortus tolmiei Thomas W. Nelson, James Nelson 1973-5-28 961 Humboldt McKeown Ranch N of Dinsmore Comment
  JEPS17825  Calochortus tolmiei Joseph P. Tracy 1932-5-10 9931 Humboldt Bear River Ridge 609 Comment
  RSA183584  Calochortus tolmiei D. E. Anderson 1965-5-15 3716 Humboldt Along Hw. 96, 1.9 miles north of Willow Creek. Comment
  CAS-BOT-BC496521  Calochortus tolmiei Lincoln Constance; Alan A. Beetle; Joseph P. Tracy 1940-5-17 2614 Humboldt Larrabee Valley, near Eureka 762 Comment
  UC667122  Calochortus vestae Joseph P. Tracy 1930-6-15 8760 Humboldt Dobbyn Creek 152 Comment
  UC1222546  Calochortus vestae Joseph P. Tracy 1950-7-6 19004 Humboldt 2 mi s Burr Valley (on the Albee Raod) 1158 Comment
  UC129390  Calycadenia fremontii Harley P. Chandler 1901-6-1 1533 Humboldt Klamath River North Coast Ranges, Klamath River 426 Comment
  RSA47142  Calycadenia truncata subsp. scabrella Doris K. Kildale 1925-9-4 982 Humboldt Redwood Creek Comment
  HSC55018  Calyptridium monospermum Overton, Butler 1979-7-31 11424 Humboldt Near Water Dog Lakes, close to the town of Hoopa 1830 Comment
  HSC99454  Calyptridium monospermum K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-7 106 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
  UC1198376  Calyptridium monospermum Joseph P. Tracy 1933-7-11 12704 Humboldt Grouse Mountain 1524 Comment
  SEINET200994  Calystegia Joseph P. Tracy 1927-7-24 8298 Humboldt Upper Mattole 152 Comment
  UC449948  Calystegia occidentalis subsp. occidentalis Mrs. M. H. Manning 1901-1 Humboldt near Hupa; near Hupa Comment
  HSC40013  Calystegia occidentalis subsp. occidentalis Thomas W. Nelson, Jane Nelson 1976-7-1 2914 Humboldt N side of Mt. Lassic (Signal Peak) 1738 Comment
  LA103753  Calystegia soldanella Robert F. Thorne; P. C. Everett 1965-8-9 35307 Humboldt Big Lagoon 3 Comment
  RSA394825  Calystegia soldanella E. A. Purer 1932-7-27 4140 Humboldt Samoa Comment
  SEINET3992220  Camassia leichtlinii Unknown 1925-7-5 1 /2/7179 Humboldt Bald Mountain 1067 Comment
  UC1046537  Camassia quamash R. Bacigalupi, L. Constance, J. P. Tracy, R. Moran, R. L. Rodriguez, and S. Carlquist 1951-6-14 3419 Humboldt Ridge between Mad River and Redwood Creek (Bald Mountain, at Snow Camp); Bald Mountain, Snow Camp 1432 Comment
  CAS-BOT-BC493384  Camassia quamash subsp. linearis M. S. Jussel 1931-5-1 s.n. Humboldt On road to Garberville Comment
  RSA0116953  Camassia quamash subsp. linearis Frank W. Peirson 1923-7-11 3681 Humboldt 7 miles N of Arcata. Comment
  HSC16437  Camissonia cheiranthifolia J. W. Johnson 1961-9-4 1104 Humboldt Christenson Farm, Samoa Peninsula, Arcata. Comment
  HSC90189  Camissonia cheiranthifolia Jean Hanson 1980-5-24 53 Humboldt Indian (Gunther) Island, in Humboldt Bay, city of Eureka. W end of island Comment
  HSC16439  Camissonia cheiranthifolia D. E. Anderson 1961-9-9 1795 Humboldt Big Lagoon County Park Comment
  UC1196940  Camissonia contorta Joseph P. Tracy 1906-5-13 2453 Humboldt Fairhaven Northern Coast Region, Humboldt Bay Comment
  HSC40377  Camissonia strigulosa Linda M. Barker 1976-4-30 1406 Humboldt 3 mi. W of Arcata Comment
  CHSC10102  Camissoniopsis cheiranthifolia subsp. cheiranthifolia J. W. Johnson 1961-8-17 1044 Humboldt Arcata. Sand dune fields, Lanphere Farm. Comment
  CHSC52938  Camissoniopsis cheiranthifolia subsp. cheiranthifolia L. P. Janeway 1984-4-11 730 Humboldt On the North Spit of Humboldt Bay; northwest of the boat ramp and north of the Coast Guard Sta. 4 Comment
  SEINET10462973  Campanula prenanthoides Overton 1979-7-24 OVERTON 9693 Humboldt Near Friday Camp, on the Willow Creek quad., close to the town of Willow Creek 1250 Comment
  RSA43830  Campanula prenanthoides H. M. Pollard 1948-7-23 s.n. Humboldt Reece Point near Orleans. Comment
  SEINET10463219  Campanula prenanthoides Shields 1955-8-5 SHIELDS s.n. Humboldt 3 MI NW OF WEOTT, MOIST HILLSIDE Comment
  SEINET10873257  Campanula prenanthoides Etienne 1972-9-4 Etienne s.n. Humboldt Lumber road to Klamath River, about 8 miles inland and 1 mile north of the Humboldt County line 30 Comment
  SEINET10939002  Campanula prenanthoides Tracy 1934-8-23 TRACY 13600 Humboldt Willow Creek Canyon 457 Comment
  HSC56968  Campanula scouleri Overton , Butler 1979-7-23 9497 Humboldt Near Titlow Hill, close to the town of Willow Creek. 1280 Comment
  JEPS11738  Campanula scouleri W. L. Jepson 1902-7-30 2128 Humboldt Three Creeks to Redwood Creek 914 Comment
  CAS-BOT-BC37020  Capsella bursa-pastoris Doris K. Kildale 1926-8-29 2591 Humboldt Van Duzen River, near Strongs Station. Comment
  HSC12555  Capsella bursa-pastoris D. La Conte 1970-10-11 16 Humboldt Cultivated area Comment
  UC161544  Cardamine breweri Joseph P. Tracy 1906-4-29 2432 Humboldt 2 mi from Fields Landing (s slope Humboldt Hill, region about Humboldt Bay); Northern Coast Region, about Humboldt Bay, Humboldt Hill 0 Comment
  UC161552  Cardamine breweri Joseph P. Tracy 1905-4-16 2163 Humboldt region about Humboldt Bay (at Bucksport); Northern Coast Region, , Bucksport 0 Comment
  CAS-BOT-BC37437  Cardamine californica A. A. Heller 1937-6-8 15896 Humboldt 3 miles north of Trinidad. Bishop Pine Lodge. Comment
  HSC44272  Cardamine californica Barbara Kelly 1977-4-23 300 Humboldt 2.5 mi. S of Shelter Cove Rd., S Fork of Bear Creek at Wailaki Campground 561 Comment
  HSC6698  Cardamine californica Francis Winter 1960-4-23 Humboldt 1 mi. E of Korbel 30 Comment
  HSC95679  Cardamine californica Steven Lee 2004-4-6 8 Humboldt Arcata Community Forest, 5-20 ft. from water along Jolly Giant Creek Comment
  LA204275  Cardamine californica Victor Duran; 1933-5-11 3405 Humboldt Van Duzen River, near Bridgeville Comment
  UC1199190  Cardamine californica Joseph P. Tracy 1913-3-30 4031 Humboldt Eureka Northern Coast Region, Eureka 0 Comment
  POM272917  Cardamine californica var. integrifolia H. E. Parks, Joseph P. Tracy 1931-3-26 916 Humboldt Lower Van Duzen River. 61 Comment
  JEPS53400  Cardamine californica var. integrifolia Lincoln Constance 1934-5-26 651 Humboldt near Founders' Tree (North Dyerville Flat Grove, South Fork Eel River, Bull Creek Region); Bull Creek Region, South Fork Eel R, North Dyerville Flat gr 48 Comment
  UC249682  Cardamine californica var. sinuata Joseph P. Tracy 1921-3-20 5426 Humboldt 12 mi e Hydesville (Van Duzen River at Blue Slide); Northern Coast Ranges, Van Duzen River at Blue Slide 91 Comment
  CAS-BOT-BC37217  Cardamine hirsuta M. S. Jussel 1931-5-2 s.n. Humboldt 8 miles north of Garberville. Comment
  UC552295  Cardaria draba Joseph P. Tracy 1933-5-19 12201 Humboldt Alton to Fortuna (Eel River); Eel River 15 Comment
  CDA18240  Cardionema ramosissimum G. D. Barbe, T. C. Fuller 1974-6-19 1878 Humboldt North Coast Ranges; Mad River mouth, at end of Iversen Lane, Tyee City. 7 Comment
  CHSC68780  Cardionema ramosissimum Vernon Oswald 1997-6-5 8537 Humboldt Somoa Dunes Recreation Area at the south tip of the North Spit of Humboldt Bay. Along the road to the jetty. 6 Comment
  HSC4143  Cardionema ramosissimum Norman H. Moe 1962-5-23 Humboldt Lanphere's Place Comment
  RSA32661  Cardionema ramosissimum Doris K. Kildale 1925-7-2 904 Humboldt Table Bluff beach. Comment
  UC1152067  Carex athrostachya Joseph P. Tracy 1950-7-16 18990 Humboldt Burr Valley, lower end Buck Mountain, NW slope 1066 Comment
  UC249760  Carex bolanderi Joseph P. Tracy 1923-6-20 6332 Humboldt White Thorn Valley Northern Coast Ranges, White Thorn Valley 304 Comment
  UC562278  Carex bolanderi Joseph P. Tracy 1936-6-9 14912 1/2 Humboldt Upper Mattole 457 Comment
  HSC96498  Carex buxbaumii Gordon Leppig 1999-7-9 1183 Humboldt Big Lagoon County Park; Big Lagoon Bog 3 Comment
  RSA246847  Carex buxbaumii Robert F. Thorne, Percy C. Everett 1965-8-9 35293 Humboldt Big Lagoon. 3 Comment
  HSC98936  Carex concinnoides Cara Witte 2007-5-24 120 Humboldt Along National Forest 1. Approximately 1 mile south of intersection with 6N38 and 6N36. 1476 Comment
  HSC103329  Carex densa Thomas W. Nelson, Jane Nelson 1982-7-11 7116 Humboldt Along road from Hindley's cabin on McKeown Ranch to Anderson's Ford at Mad River Comment
  UC303071  Carex densa Joseph P. Tracy 1912-7-31 3906 Humboldt on nw slope of Buck Mountain Northern Coast Ranges, Burr Valley, Buck Mountain 1066 Comment
  UC1116267  Carex deweyana subsp. leptopoda Joseph P. Tracy 1943-7-18 17442 Humboldt Big Lagoon 9 Comment
  UC562271  Carex echinata subsp. echinata Joseph P. Tracy 1932-7-14 10567 Humboldt Corral Prairie Trinity Summit, Corral Prairie 1584 Comment
  HSC76841  Carex exsiccata L. P. Janeway 1982-8-7 115 Humboldt Dry Lagoon 3 Comment
  CAS-BOT-BC19963  Carex exsiccata Joseph Prince Tracy 1938-9-25 16170 Humboldt Bald Mountain; at Lake Prairie. 1066 Comment
  CAS-BOT-BC20873  Carex globosa Joseph Prince Tracy 1929-6-3 8605 Humboldt North Coast Ranges. Willow Creek Canyon. Mouth of East Fork. 487 Comment
  POM160289  Carex globosa Joseph P. Tracy 1925-6-7 7064 Humboldt East Fork of Willow Creek, Willow Creek Canyon. 457 Comment
  UC562625  Carex gynodynama Joseph P. Tracy 1936-6-21 14991 Humboldt Iaqua. Comment
  CAS-BOT-BC22317  Carex harfordii Joseph Prince Tracy 1935-6-8 13938 Humboldt Eureka. 60 Comment
  CAS-BOT-BC21753  Carex hassei Joseph Prince Tracy 1941-5-11 16868 Humboldt Big Lagoon. 152 Comment
  UC562335  Carex hoodii Joseph P. Tracy 1932-7-11 10410 Humboldt Corral Prairie Trinity Summit 1584 Comment
  SEINET3836749 Image available Carex integra Joseph P. Tracy 1926-7-5 7723 Humboldt Near the Redwood House, on road to head of Yager Comment
  UC1103093  Carex integra Joseph P. Tracy 1932-7-14 10547 Humboldt Corral Prairie Trinity Summit 1584 Comment
  UC1103575  Carex leptalea H. E. Parks and Joseph P. Tracy 1931-6-7 9557 Humboldt vicinity Trinidad; Northern Coast Region 60 Comment
  CAS-BOT-BC31465  Carex leptopoda Joseph Prince Tracy 1936-6-9 14902 Humboldt Mattole Valley, 4 mi SE of Petrolia. 60 Comment
  UC562333  Carex lyngbyei Joseph P. Tracy 1927-7-16 8248 Humboldt near mouth Elk River (around Humboldt Bay); Northern Coast Region 3 Comment
  JEPS116608  Carex mariposana Barbara Wilson, Richard Brainerd, Susan Erwin, Christine Jordan and Mike Friend 2003-6-20 10950 Humboldt Sundew Meadow on South Fork Mountain, on Shasta-Trinity Forest road 1661 Comment
  UC1103570  Carex multicaulis Joseph P. Tracy 1919-5-31 5164 Humboldt near Willow Creek (hill slopes at w side of Trinity River); Northern Coast Ranges 152 Comment
  UC152055  Carex multicaulis Joseph P. Tracy 1950-7-1 18958 Humboldt near Friday Camp; Grouse Mountain, Friday Ridge 1219 Comment
  UC562260  Carex multicaulis Joseph P. Tracy 1927-3-27 7862 Humboldt near South Fork Trinity River; Northern Coast Ranges, Trinity River Valley 182 Comment
  UC1103091  Carex multicostata Joseph P. Tracy 1933-7-25 12847 Humboldt Grouse Mountain North Coast Ranges 1524 Comment
  CAS-BOT-BC119540  Carex nudata Henry M. Pollard 1945-8-25 s.n. Humboldt Orleans Bridge, Klamath River Canyon Comment
  UC562448  Carex nudata Joseph P. Tracy 1935-7-21 14120 Humboldt along river at Willow Creek Trinity River Valley 152 Comment
  CHSC84707  Carex obnupta L. P. Janeway 2003-7-27 7931 Humboldt North Coast. West edge of Dry Lagoon. 4 Comment
  SEINET7569441 Image available Carex obnupta L. P. Janeway 2003-7-27 7925 Humboldt Rodgers Peak 7.5' quad. North Coast, edge of marsh on south side of southwest end of Hwy 101 causeway across Big Lagoon. 2 Comment
  RSA122793  Carex obnupta H. S. Yates 1936-6-16 5653 Humboldt 0.5 mile southwest of Samoa. Comment
  SD51256  Carex obnupta Darley F. Howe 1961-8-1 3107 Humboldt Under Picea; 3 miles north of Arcata. Comment
  CAS-BOT-BC119268  Carex ovalis Alice Eastwood; John Thomas Howell 1937-6-23 4790 Humboldt Near Dinsmore's 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
  UC249810  Carex pachystachya Joseph P. Tracy 1923-6-17 6278 Humboldt Big Lagoon Northern Coast Region 6 Comment
  POM301859  Carex pachystachya Joseph P. Tracy 1938-6-15 15934 Humboldt Vicinity of Carlotta. 30 Comment
  CAS-BOT-BC119167  Carex pansa W. R. Dudley 1899-6-1 s.n. Humboldt Penninsula opposite Eureka. Comment
  HSC49246  Carex pansa Rudolf W. Becking 1979-3-25 Humboldt U.S. Coast Guard Station along N Spit Humboldt Bay, Fairhaven Comment
  CAS-BOT-BC118821  Carex preslii R. Tallent 1987-8-11 893 Humboldt Six Rivers National Forest. Roadside S of Horse Mtn. 1449 Comment
  SEINET958239  Carex rossii H. E. Parks, Joseph P. Tracy 1933-1 12161 Humboldt Vicinity of Trinidad 61 Comment
  CAS-BOT-BC118230  Carex scopulorum var. bracteosa Joseph Prince Tracy 1932-7-17 10675 Humboldt Trinity Summit. Wet meadow heading into Devil's Hole. 1828 Comment
  UC1152080  Carex serratodens Joseph P. Tracy 1950-6-25 18893 Humboldt near Sproston Place (on the road to the Albee Place, 3 mi s of Burr Valley); Buck Mountain 1158 Comment
  RSA757866  Carex subbracteata P. F. Zika 2009-6-15 24494 Humboldt Above route 299, 2.3 road miles west of junction with Chezen Road. 680 Comment
  CAS-BOT-BC116940  Carex subbracteata Joseph Prince Tracy 1936-6-9 14904 Humboldt Upper Matole. 121 Comment
  CAS-BOT-BC116904  Carex subbracteata var. subbracteata Alice Eastwood; John Thomas Howell 1937-6-23 4808 Humboldt Little Van Duzen River Comment
  CAS-BOT-BC116908  Carex subbracteata var. subbracteata Alice Eastwood; John Thomas Howell 1937-6-22 4751 Humboldt 8.5 miles from Blocksburg on road to Bridgeville. 335 Comment
  CAS-BOT-BC114986  Carex viridula Joseph Prince Tracy 1924-7-13 6720 Humboldt In brackish swamp, Big Lagoon. 6 Comment
  UC198585  Carpobrotus chilensis Joseph P. Tracy 1916-4-9 Humboldt n of Samoa (Ocean Beach at Humboldt Bay); Northern Coast Region, Humboldt Bay Comment
  SBBG7047  Castilleja ambigua subsp. ambigua H. and M. Dearing 1939-5-25 3430 Humboldt beach N of Loleta Comment
  HSC1974  Castilleja ambigua subsp. humboldtiensis D. E. Anderson, N. Dennis 1965-6-8 100 Humboldt Along E edge of Humboldt Bay, 1 mi. S of Arcata Comment
  UC1224687  Castilleja ambigua subsp. humboldtiensis D. E. Anderson 1964-4-12 2973 Humboldt 1 mi s Arcata (at ne end of Humboldt Bay); Humboldt Bay Comment
  CAS-BOT-BC255517  Castilleja applegatei var. pinetorum Barry Silver 1986-4-23 531 Humboldt Bair Road, 9.5 miles nw of junction with Highway 299, Pine Ridge Summit area 944 Comment
  HSC102121  Castilleja arachnoidea M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 1025 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  HSC48266  Castilleja attenuata D. E. Anderson 1965-5-8 3642 Humboldt About 2 mi. N of Willow Creek on road running along E side of Trinity River Comment
  HSC47062  Castilleja exserta subsp. latifolia J. P. Smith, Thomas W. Nelson 1977-6-30 9199 Humboldt Samoa Peninsula just E of the drag strip 6 Comment
  HSC48386  Castilleja hispida subsp. brevilobata Brad Klipfel 1973-6-10 110 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC56127  Castilleja miniata G. L. Clifton, Griswold 1979-8-1 11925 Humboldt Near Mill Creek Lakes, close to the town of Hoopa. 1692 Comment
  HSC72484  Castilleja pruinosa J. P. Smith, J. O. Sawyer 1973-5-12 6706 Humboldt 10.4 mi. from Redwood Creek on Hoopa Rd. 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
  SBBG68608  Castilleja rubicundula subsp. lithospermoides H. E. Parks, J. P. Tracy 1930-5-25 796 Humboldt vicinity of Bridgeville, Laribee Valley (Larabee Valley) Comment
  UC168991  Castilleja rubicundula subsp. lithospermoides Joseph P. Tracy 1901-5-28 1244 Humboldt Redwood Creek North Coast Ranges (at Bair's ranch) 121 Comment
  UC1502112  Ceanothus R. Sutherland 1976-1-30 4 .30.76 Humboldt Pt. Delgada Quad. 990 Comment
  HSC41255  Ceanothus arcuatus Brad Klipfel 1974-6-25 445 Humboldt Horse Mtn. Comment
  CAS-BOT-BC126841  Ceanothus cuneatus Thomas Nelson 1977-6-15 3453 Humboldt unspecified 1371 Comment
  RSA25803  Ceanothus foliosus Carl B. Wolf 1941-7-29 11093 Humboldt Along the Redwood Hwy, 0.7 mile N of jct with Hwy 1 from Ft. Bragg 61 Comment
Read comments
Jun 7 2011
  UC535732  Ceanothus incanus Eleanor Armstrong 1934-8-15 1187 Humboldt Richardson Grove 121 Comment
  HSC98205  Ceanothus integerrimus D. E. Anderson 1965-5-8 3657 Humboldt W end of bridge over Trinity River, 0.5 mile S of Willow Creek. Comment
  JEPS42235  Ceanothus integerrimus W. L. Jepson 1932-7-24 16384 Humboldt near Fruitland (Mail Ridge) Comment
  UC1198005  Ceanothus integerrimus Joseph P. Tracy 1934-4-15 13181 Humboldt Trinity River Valley, at Willow Creek 152 Comment
  UCR270274  Ceanothus integerrimus John F. Emmel 2003-7-30 1800 Humboldt near southeast boundary of Redwood National Park, Bald Hills Road, 19.5 road miles SE of Hwy 101 960 Comment
  HSC37608  Ceanothus oliganthus var. sorediatus R. Sutherland 1975-7-11 4 .11775 Humboldt Along county rd. 274 Comment
  UC1193287  Ceanothus oliganthus var. sorediatus P. Zinke 1950-10-4 167 Humboldt 2 mi se Honeydew; Quad. 28D1 182 Comment
  UC275287  Ceanothus oliganthus var. sorediatus Joseph P. Tracy 1924-5-11 6675 Humboldt Bull Creek Northern Coast Ranges 121 Comment
  HSC43179  Ceanothus parryi R. Sutherland 1975-6-19 2 .19675 Humboldt 2 mi NE of Briceland 178 Comment
  SBBG4535  Ceanothus parryi H. and M. Dearing 1933-5-15 979 Humboldt near Garberville Comment
  UC1193306  Ceanothus parryi K. Cuff 1950-8-24 123 Humboldt 2 mi n Phillipsville; Quad. 29C1, n of Phillipsville 213 Comment
  HSC43186  Ceanothus pumilus R. Sutherland 1976-4-17 3 .17476 Humboldt 549 Comment
  UC170018  Ceanothus pumilus Joseph Burtt Davy and Walter C. Blasdale 1899-6-19 5647 Humboldt Hoopa Mountain North Coast Ranges, Hoopa Mountain Comment
  HSC43218  Ceanothus thyrsiflorus R. Sutherland 1975-5-28 12 .28575 Humboldt Tolkan Recreational Site 503 Comment
  HSC60290  Ceanothus thyrsiflorus Phyllis Krieg 1979-4-21 Humboldt Near Clam Beach Lagoon Trail, E of Hwy. 101 0 Comment
  RSA77347  Ceanothus thyrsiflorus F. W. Peirson 1926-7-12 70431 Humboldt Orick Comment
  UC1071395  Ceanothus thyrsiflorus G. T. Nordstrom Jul 1934 1426 Humboldt 1 mi nne Orick; Orick Quad. 3 Comment
  UC275289  Ceanothus thyrsiflorus Joseph P. Tracy 1924-8-10 6796 Humboldt Strongs' Station Northern Coast Ranges, Van Duzen River (on Van Duzen River) 91 Comment
  UC726578  Ceanothus thyrsiflorus A. A. Heller 1937-6-11 15916 Humboldt Near Big Lagoon Patric Point state Park Comment
  HSC43225  Ceanothus velutinus R. Sutherland 1976-3-17 6 .17376 Humboldt 747 Comment
  CAS-BOT-BC277175  Centaurea X moncktonii Henry M. Pollard 1945-8-20 s.n. Humboldt Bluff Creek Comment
  CDA7084  Centaurea calcitrapa J. F. Hart 1963-9-17 Humboldt Whitlow, Eel River, 2 miles east of McCann. 0 Comment
  CDA7087  Centaurea calcitrapa T. C. Fuller 1961-9-26 7030 Humboldt Horse Prairie, 2 miles south of Redcrest. 0 Comment
  CDA15840  Centaurea diffusa P. Haggard 1999-10-18 PDR 1170400 Humboldt North Coast; near Blue Lake. 0 Comment
  RSA46684  Cephalanthera austiniae Doris K. Kildale 1937-7-18 15139 Humboldt Horse Mt. Comment
  UC8230  Cerastium arvense Mrs. M. H. Manning Apr. 1899 Humboldt Hoopa Valley Comment
  CAS-BOT-BC388164  Cerastium fontanum Henry M. Pollard 1948-7-21 s.n. Humboldt Near Orleans Comment
  UC1198317  Cerastium glomeratum Joseph P. Tracy 1934-3-11 13150 Humboldt Weitchpec 121 Comment
  CAS-BOT-BC400144  Ceratophyllum demersum Henry M. Pollard 1946-8-16 s.n. Humboldt Pond near Harley place, Orleans region Comment
  HSC2136  Cercis occidentalis Doris K. Kildale 1926-5-2 1909 Humboldt Willow Creek Comment
  POM162070  Cercis occidentalis Joseph P. Tracy 1921-9-4 5950 Humboldt Trinity River Valley, near Willow Creek. Comment
  UC34637  Chaenactis glabriuscula var. heterocarpha Chesnut and Drew 1888-7-23 Humboldt Comment
  CAS-BOT-BC166042  Chamerion angustifolium subsp. circumvagum 1878-1-1 s.n. Humboldt Unspecified Comment
  UC144090  Chamerion angustifolium subsp. circumvagum J. P. Tracy 1903-8-9 1938 Humboldt Immediate vicinity of Eureka 0 Comment
  CAS-BOT-BC68264  Cheilanthes gracillima Henry M. Pollard 1943-8-1 s.n. Humboldt Orleans Mt. 1828 Comment
  HSC70561  Cheilanthes gracillima M. A. Baker 1980-7-19 3028 Humboldt Near Bret Hole. 1814 Comment
  HSC98769  Cheilanthes gracillima Cara Witte 2007-8-9 628 Humboldt Near Grouse Mountain. Along Forest Service Road 4N32. Approximately .2 miles from intersection with Forest Service Road 4N32B. 1413 Comment
  RSA44502  Chenopodium ambrosioides var. ambrosioides H. M. Pollard 1947-8-31 s.n. Humboldt Klamath River near Wilson Creek, Orleans region. Comment
  POM188634  Chenopodium botrys Marcus E. Jones 1931-7-16 28870 Humboldt Junction, East of Arcata Comment
  CAS-BOT-BC451385  Chimaphila menziesii Harley P. Chandler 1901-6-1 1398 Humboldt North Coast Ranges, Hupa Indian Reservation 152 Comment
  HSC54858  Chimaphila menziesii G. L. Clifton, Griswold 1979-7-25 10754 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1814 Comment
  HSC55025  Chimaphila menziesii Overton, Butler 1979-7-31 11440 Humboldt Near Water Dog Lakes, close to the town of Hoopa 1830 Comment
  HSC48861  Chimaphila umbellata Brad Klipfel 1973-7-31 243 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  UCR48601  Chrysanthemum leucanthemum R. D. Goeden, Don W. Ricker 1987-9-2 870902- 19 Humboldt Loleta, along Cannibal Road 8 Comment
  CDA7411  Chrysanthemum segetum B. F. Kemp 1958-4-11 345 -58 Humboldt South Side Mad River near mouth. 0 Comment
  HSC98993  Chrysolepis chrysophylla var. minor Cara Witte 2008-7-1 786 Humboldt Near Grouse Mountain. Along Forest Service Road 4N32. Approximately .5 mile south of intersection with 5N04 and 4N32E. 1406 Comment
  JEPS12245  Cicuta douglasii Joseph P. Tracy 1927-9-25 8379 Humboldt 2 mi s of Fields Landing (near Still Ranch) 6 Comment
  HSC30333  Cicuta douglasii Dale R. Gradek 1974-5-29 89 Humboldt SE end of Big Lagoon County Park 3 Comment
  UCD127358  Cicuta douglasii Bellue Goodwin 1932-9-28 s.n. Humboldt Arcata. Comment
  UC212881  Cinna latifolia Joseph P. Tracy 1919-9-18 5255 Humboldt Trinity Summit; Northern Coast Ranges, Trinity Summit 1524 Comment
  HSC55863  Circaea alpina subsp. pacifica G. L. Clifton, Griswold 1979-7-25 10872 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1784 Comment
  UC1198515  Circaea alpina subsp. pacifica Joseph P. Tracy 1935-7-23 14159 Humboldt lower end Brett Hole (Trinity Summit); Trinity Summit 1584 Comment
  CDA20043  Cirsium arvense E. Finley 2002-8-8 PDR 1035509 Humboldt Northwestern California; 0.7 mi S of Del Norte county on Hwy 101 between MM 136.36 and MM 136.38. 0 Comment
  JEPS59108  Cirsium arvense Lincoln Constance 1934-6-2 787 Humboldt to mouth of Bull Creek, and up Bull Creek Bull Creek road; South Fork Eel River, Bull Creek Region Comment
  UC169295  Cirsium brevistylum Joseph P. Tracy 1912-7-14 3748 Humboldt at Eureka Northern Coast Region, Eureka 0 Comment
  HSC47962  Cirsium douglasii var. breweri Brad Klipfel 1974-8-2 518 Humboldt Horse Mtn. Comment
  CAS-BOT-BC279974  Cirsium douglasii var. douglasii John Thomas Howell 1937-7-31 13716 Humboldt 5 miles east of Berry Summit Comment
  CDA1217  Cirsium douglasii var. douglasii T. C. Fuller 1962-8-6 9352 Humboldt Hwy 299, 3.4 miles east of Berry Summit. Comment
  CAS-BOT-BC285529  Cirsium occidentale var. candidissimum L. B. Kildale 1930-7-7 10261 Humboldt Chaparral Mt. at Bug Creek 914 Comment
  UC1223055  Cirsium occidentale var. venustum Joseph P. Tracy 1948-8-8 18092 Humboldt hillside back of (Iaqua and Bridgeville) Iaqua School House Comment
  CAS-BOT-BC288712  Cirsium remotifolium Joseph P. Tracy 1930-7-21 8887 Humboldt Bear River RIdge Comment
  CAS-BOT-BC285772  Cirsium vulgare Carl B. Wolf 1927-8-22 803 Humboldt Big Lagoon Comment
  HSC5384  Cirsium vulgare J. L. Baker 1965-4-13 48 Humboldt 4 mi. N of Arcata on North Bank Rd. Comment
  HSC89489  Cirsium vulgare P. A. Daly 1986-2-28 65 Humboldt Trinidad Head, along trail 61 Comment
  HSC23714  Clarkia amoena Tim Baroni 1971-7-25 50 Humboldt About 8 mi. E of Petrolia Comment
  UC583076  Clarkia amoena subsp. amoena P. A. Munz 1936-8-10 14339 Humboldt 15 mi e Bridgeville; Little Van Duzen River Comment
  HSC37508  Clarkia gracilis J. D. Ackerman, A. M. Montalvo 1975-6-22 487 Humboldt 6.4 mi. W of Dinsmore, Hwy. 36 Comment
  UC562524  Clarkia gracilis subsp. gracilis Joseph P. Tracy 1936-6-10 14935 Humboldt w of mouth South Fork Trinity River 609 Comment
  HSC38312  Clarkia purpurea Peter Sorensen 1976-6-14 Humboldt N Spit Comment
  UC144077  Clarkia purpurea subsp. quadrivulnera Joseph P. Tracy 1908-6 2679 Humboldt nw slope Buck Mountain; Northern Coast Ranges 609 Comment
  CAS-BOT-BC172389  Clarkia purpurea subsp. viminea Doris K. Kildale 1927-6-25 3584 Humboldt Near Ettersburg Comment
  HSC67213  Claytonia exigua subsp. exigua Thomas W. Nelson, James Nelson 1980-6-10 5442 Humboldt Along branch road off Swayback Ridge Rd., 1/2 mi. E of junction 1372 Comment
  CAS-BOT-BC439933  Claytonia perfoliata subsp. mexicana Doris K. Kildale 1926-3-21 1583 Humboldt Kneeland Prairie - summit 853 Comment
  HSC24337  Claytonia perfoliata subsp. perfoliata C. E. Fellows 1971-8-16 398 Humboldt Clam Beach, near end of Central Ave. Comment
  SEINET200312  Claytonia rubra subsp. rubra J. P. Tracy 1913-6-16 4141 Humboldt Dinsmore's Ranch in valley of Van Duzen River opposite Buck Mt. 762 Comment
  HSC17754  Claytonia saxosa D. E. Anderson 1967-6-10 4366 Humboldt W-facing slope on Horse Mtn. 1220 Comment
  CAS-BOT-BC443886  Claytonia sibirica Mrs. E. C. Van Dyke 1931-6-30 s.n. Humboldt Willow Creek Comment
  SBBG69724  Claytonia sibirica H. and M. Dearing 1939-6-21 3689 Humboldt E fork of Willow Crk Comment
  SEINET198592  Claytonia sibirica H. E. Parks 01421 Humboldt Spruce Cove Trinidad Comment
  UC1028307  Claytonia sibirica George B. Rossbach 1955-6-8 263 Humboldt Prairie Creek Redwoods State Park (Route 101) Comment
  UC672986  Claytonia sibirica Joseph P. Tracy 1930-7-16 8921 Humboldt McKay Camp; South Fork Mountain 1676 Comment
  HSC99242  Claytonia washingtoniana C. E. Fellows 1971-6-7 456 Humboldt 1 mi. E of Freshwater, near creek S of Freshwater Park Comment
  CAS-BOT-BC92598  Clematis ligusticifolia Joseph P. Tracy 1937-8-3 15608 Humboldt Along Mad River, near Blue Lake. 15 Comment
  UCSB12091  Clintonia andrewsiana Dearing, Hugh; Dearing, Margaret 1931-5-16 Humboldt Weott Comment
  BLMAR278  Clintonia andrewsiana Jennifer Anthony-Wheeler 1999-6-3 278 Humboldt Headwaters Forest Reserve less than 400 Comment
  HSC15445  Clintonia andrewsiana J. F. Knezevich 1968-5-13 428 Humboldt Near Arcata above Freshwater Forest Comment
  HSC57030  Clintonia uniflora Overton, Butler 1979-7-24 9654 Humboldt Near Friday Camp, close to the town of Willow Creek. 1250 Comment
  POM260783  Clintonia uniflora H. C. Cantelow 1939-6-5 s.n. Humboldt Van Duzen River, 1.5 miles from Dinsmore. Comment
  HSC40014  Collinsia greenei Thomas W. Nelson, Jane P. Nelson 1976-7-1 2915 Humboldt Along N side of Mt. Lassic (Signal Peak) 1738 Comment
  CHSC63420  Collinsia linearis Vernon H. Oswald 1994-6-29 6357 Humboldt Titlow Hill Rd. (Forest Rd. 1) 3.9 mi S of Hwy. 299, SW of Willow Creek. 1289 Comment
  HSC73177  Collinsia linearis M. A. Baker 1980-5-18 1335 Humboldt Near Black Mtn. 792 Comment
  UC1222820  Collinsia linearis Joseph P. Tracy 1950-7-2 18969 Humboldt on Ridge 2 mi e of Grove's Prairie (Trinity Summit, Happy Camp Mountain); Trinity Summit, Happy Camp Mountain 1371 Comment
  UC26620  Collinsia linearis Harley P. Chandler Jun 1901 1294 Humboldt Hupa Indian Reservation near Hupa (between The Swag and Hupa); North Coast Ranges, Hupa Indian Reservation 304 Comment
  JEPS7056  Collinsia torreyi var. wrightii Joseph P. Tracy 1933-7-16 12777 Humboldt near McKay Camp; South Fork Mtn 1676 Comment
  HSC56331  Collomia grandiflora Overton, Butler 1979-8-2 12698 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  UC1197855  Collomia grandiflora Joseph P. Tracy July, 1908 2785 Humboldt ridge between Van Duzen and Mad Rivers at Low Gap (Humboldt and Trinity counties); Northern Coast Ranges 457 Comment
  UC908725  Collomia grandiflora Joseph P. Tracy 1933-7-21 12818 Humboldt on ridge s Yager Creek (10 mi e of Carlotta, edge of redwood belt); Redwood House 762 Comment
  HSC16924  Collomia heterophylla D. E. Anderson 1962-7-17 2274 Humboldt Camp Bauer, 1/4 mi. E of Korbel, along N Fork of Mad River Comment
  HSC70776  Collomia heterophylla R. York 1980-5-17 551 Humboldt Near Le Perron Peak. 415 Comment
  HSC16923  Collomia heterophylla Anonymous 1957-4-27 123 Humboldt 5 mi. E of Honeydew Comment
  UC1197850  Collomia heterophylla Joseph P. Tracy 1911-7-5 3324 Humboldt near its mouth Northern Coast Ranges, Willow Creek (tributary of Trinity Ri 304 Comment
  HSC55602  Collomia tinctoria Overton, Butler 1979-7-23 9424 Humboldt Near Horse Mtn., close to the town of Willow Creek 1478 Comment
  HSC97228  Collomia tinctoria Kiera A. Freeman, Heather J. Perry 2007-6-11 6 Humboldt 14.1 mi. S of Hwy. 299 on NF1 1372 Comment
  HSC97575  Collomia tinctoria Cara Witte 2007-5-29 138 Humboldt Along National Forest 1 near Kinsey Ridge. 1/2 mile south of cattle guard. 1369 Comment
  HSC57691  Collomia tracyi G. L. Clifton, Griswold 1979-7-25 10910 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1784 Comment
  CAS-BOT-BC180242  Comandra umbellata subsp. californica Joseph P. Tracy 1927-5-15 8038 Humboldt Trinity River Valley, near the S Fork 182 Comment
  UC1222614  Conium maculatum Joseph P. Tracy 1950-6-8 18768 Humboldt near Petrolia (Hills between town and ocean) Comment
  NY643129  Convolvulus arvensis H. N. Moldenke 1932-7-4 7135 Humboldt Comment
  UC160953  Coptis laciniata Joseph P. Tracy Jul 27 1908-Jul 30 1908 2729 Humboldt opposite Buck Mountain (Northern Coast Ranges, Valley of Van Duzen River); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  JEPS64347  Corallorhiza maculata W. L. Jepson 1902-6-28 1947 Humboldt Hupa Rd Green Point Ranch (ridge) 914 Comment
  RSA20798  Corallorhiza maculata Carl B. Wolf 1937-8-13 9263 Humboldt North Coast Range, 12 mi. E. of Hoopa Valley on New Road toward Trinity Summit. 1677 Comment
  HSC28082  Corallorhiza mertensiana J. D. Ackerman, A. Montalvo 1973-7-4 94 Humboldt Grogan Hole Rd, 18 mi. E of Hoopa Comment
  UC1196462  Corallorhiza striata Joseph P. Tracy 1918-5-28 4935 Humboldt on slope below High Prairie (near Redwood Creek); Northern Coast Ranges 609 Comment
  UC1199416  Corethrogyne filaginifolia J. P. Tracy 1900-7-4 872 Humboldt opp. Eureka; Samoa Comment
  UC1223040  Corethrogyne filaginifolia Joseph P. Tracy 1947-7-7 17759 Humboldt mouth of (n side) Mad River Comment
  UC183574  Cornus glabrata Joseph P. Tracy 1913-6-21 4251 Humboldt Van Duzen R. just below Low Gap; Northern Coast Ranges, Van Duzen R. 762 Comment
  CAS-BOT-BC212007  Cornus nuttallii John McLaren 1920-9-1 s.n. Humboldt Unspecified Comment
  CAS-BOT-BC212014  Cornus nuttallii Doris K. Kildale 1927-5-13 3133 Humboldt Lord Ellis Road near Bald Mountain junction. Comment
  CAS-BOT-BC212018  Cornus nuttallii Mrs. A. H. Rodda 1932-5-22 s.n. Humboldt Redwood Highway Comment
  RSA15577  Cornus nuttallii C. B. Wolf 1927-8-28 1165 Humboldt In the valley of the Hoopa Indian Reservation. Comment
  CAS-BOT-BC212180  Cornus sericea Joseph P. Tracy 1927-11-6 8392 Humboldt Along yager Creek, Carlotta 60 Comment
  HSC98742  Cornus sericea subsp. occidentalis Cara Witte 2007-6-27 377 Humboldt Forest Service Road 6N08. Friday Ridge Road. Approximately 2 miles south of intersection with 5N09. 1474 Comment
  HSC58048  Cornus sericea subsp. sericea G. L. Clifton, Griswold 1979-8-1 11907 Humboldt Near Mill Creek Lakes, close to the town of Hoopa. 1692 Comment
  HSC76355  Cornus sericea subsp. sericea Denis Kearns 1981-7-23 418 Humboldt Near Whiteys Peak. 1524 Comment
  HSC26713  Cornus sessilis D. E. Anderson 1973-5-13 6027 Humboldt 100 meters S of Jct. of E Fork of Willow Creek and Willow Creek proper. Comment
  HSC76276  Corylus cornuta subsp. californica Teresa Prendusi 1981-7-24 468 Humboldt Near Whiteys Peak 1585 Comment
  RSA173975  Corylus cornuta var. californica R. F. Thorne 1957-9-2 19003 Humboldt Eel River. Burlington State Park, just S of Weott. Comment
  RSA46830  Corylus cornuta var. californica Doris K. Kildale 1926-8-31 2602 Humboldt Mattole Valley, at Geo. H. Mineis. Comment
Read comments
Jan 24 2013
  CAS-BOT-BC453358  Cotoneaster lacteus Arthur Lee Jacobson 2007-8-13 s.n. Humboldt North of Mill creek and W of Stagecoach Road, southern part of Trinidad Dtate Beach, (North coast, NCO) 50 Comment
  CAS-BOT-BC143494  Cotoneaster pannosus Peter F. Zika 2007-7-20 23324 Humboldt Lynda Lane near high school, S end of Big Lagoon, (NCo, North Coast) 20 Comment
  UC166079  Cotula australis J. P. Tracy 1900-5-26 804 Humboldt Eureka Comment
  HSC39945  Cotula coronopifolia Linda M. Barker 1976-6-1 1554 Humboldt Lanphere-Christensen Dunes, 3 mi. W of Arcata. Comment
  HSC5431  Cotula coronopifolia H. E. Parks Sep 1941 24211 Humboldt Little River Beach Park, along highway Comment
  CAS-BOT-BC291493  Crepis capillaris Alice Eastwood 1921-7-21 10657 Humboldt Carlotta Comment
  SD51323  Crepis capillaris Darley F. Howe 1961-7-31 3098 Humboldt 37.7 miles south of Eureka on Highway 101. Comment
  UCR121767  Crepis capillaris George K. Helmkamp, E. A. Helmkamp 2001-7-8 6998 Humboldt North Coast, north spit of Samoa Peninsula, 0.5 mi north of CA Hwy 255 bridge over Humboldt Bay 6 Comment
  HSC46020  Crepis capillaris Catherine Chin 1978-8-5 93 Humboldt Arcata, along 16th St., 100 yds. E of Union St. Comment
  RSA43685  Crepis setosa H. M. Pollard 1947-8-21 s.n. Humboldt roadside between Orleans and Boyse Creek Comment
  HSC70377  Crocidium multicaule M. A. Baker 1980-6-7 1787 Humboldt Near Brush Mtn. 1128 Comment
  SEINET12145336  Croton setiger E. A. York 1990-1-10 2702 Humboldt USGS Redwood Field Station, Arcata 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
  UC175774  Cryptantha intermedia Mrs. M. H. Manning 1900-1 Humboldt Hupa Valley Comment
  UC175773  Cryptantha intermedia Joseph P. Tracy 1911-7-6 3335 Humboldt road between Three Creeks and Mouth of Willow Creek; Northern Coast Ranges 762 Comment
  UC1239652  Cryptantha torreyana Joseph P. Tracy 1912-7-31 3895 Humboldt nw slope Buck Mountain; Northern Coast Ranges, Burr Valley 1066 Comment
  HSC74455  Cryptogramma acrostichoides Gail Newton 1980-8-10 2005 Humboldt Near Blake Mtn. 1798 Comment
  JEPS39837  Cupressus lawsoniana W. L. Jepson 1902-6 2131 Humboldt Three Creeks to summit of ridge (on grade to Redwood Creek) 914 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
  UC502914  Cupressus lawsoniana Joseph P. Tracy 1927-6-12 8141 Humboldt Horse Mountain Northern Coast Ranges, Horse Mountain 1524 Comment
  JEPS47099  Cuscuta occidentalis Joseph P. Tracy 1916-9-6 4760 Humboldt Grasshopper Ridge, headwaters of Canoe Creek Northern Coast Ranges, Canoe Creek 609 Comment
  RSA249509  Cuscuta salina R. F. Thorne, P. C. Everett 1965-8-8 35280 Humboldt N edge of Eureka, E of Hwy 101. 3 Comment
  UC582719  Cuscuta suksdorfii Joseph P. Tracy 1937-8-12 15639 Humboldt Snow Camp 1402 Comment
  UC642236  Cyclospermum leptophyllum Joseph P. Tracy 1927-8-20 8333 Humboldt Blue Slide Northern Coast Ranges, Van Duzen River (on Van Duzen River) 91 Comment
  UC922013  Cynodon dactylon Joseph P. Tracy 1949-8-18 16427 Humboldt Eureka 15 Comment
  UC1239627  Cynoglossum grande Joseph P. Tracy 1927-7-4 8241 Humboldt S. Yager Creek Valley Northern Coast Ranges, S. Yager Creek Valley 762 Comment
  SEINET200580  Cynoglossum occidentale J. P. Tracy 1930-7-10 8871 Humboldt Brannan Mtn 1219 Comment
  SACT000843  Cynosurus cristatus Malcolm Nobs, S. Smith 1949-8-3 Humboldt Marsh and bog land at the southern outskirts of Eureka. Comment
  HSC73571  Cynosurus echinatus Gail Newton 1980-7-14 1508 Humboldt Near Last Chance Ridge. 1219 Comment
  HSC9520  Cynosurus echinatus True Hoyle 1967-7-24 29067 Humboldt Oscar Stapp Ranch near Showers Creek and Showers Pass Comment
  RSA137066  Cynosurus echinatus I. L. Wiggins 1957-6-21 14142 Humboldt Margin of grassy slide area on east side of road, 1 mile south of Garberville Comment
  RSA54135  Cyperus bipartitus Henry M. Pollard s.n. Humboldt Near Orleans. Comment
  UC668029  Cyperus bipartitus Joseph P. Tracy 1931-9-7 9664 Humboldt Trinity R. Valley at Willow Creek; Trinity R. Valley 152 Comment
  UC668030  Cyperus bipartitus Joseph P. Tracy 1938-8-14 16113 Humboldt slopes w. of its mouth S. Fork Trinity R. 304 Comment
  CAS-BOT-BC114623  Cyperus eragrostis Joseph Prince Tracy 1937-8-3 15612 Humboldt Near Blue Lake, along Mad River. 15 Comment
  HSC37996  Cyperus eragrostis Peter Sorensen 1976-6-19 Humboldt Woodley Island 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
  BLMAR416  Cyperus eragrostis Jennifer Wheeler 2007-8-29 416 Humboldt South Spit, East side of road near bay 9 Comment
  UC1103640  Cyperus squarrosus Joseph P. Tracy 1930-10-19 9230 Humboldt Alton to Fortuna; Eel R. 15 Comment
  CAS-BOT-BC70541  Cystopteris fragilis Doris K. Kildale 1926-5-2 1880 Humboldt Willow Creek Flat - Trinity River tributary 152 Comment
  HSC97609  Cystopteris fragilis Cara Witte 2007-6-4 203 Humboldt Cold Spring. 0.5 mile S of Titlow Hill. 1386 Comment
  POM66966  Cytisus monspessulanus Marcus E. Jones 1924-4-26 s.n. Humboldt Eureka. Comment
  CDA4057  Cytisus scoparius T. C. Fuller 1961-3-22 5940 Humboldt North slope, Humboldt Hill, Eureka. 0 Comment
  SEINET2153799  Cytisus scoparius K. T. Harper 2002-1 2002 -3 Humboldt Redwood Park, near Orick. Comment
  HSC9540  Dactylis glomerata E. W. Styskel 1964-4-12 64 Humboldt Corner of Center Street and Hwy. 101 in Rio Dell. Comment
  SBBG53086  Dactylis glomerata R. N. Philbrick, J. R. Haller 1976-6-25 6 Humboldt Capetown-Ferndale Rd, NW of Cape Mendocino, ca. 4 mi NW of Bear River at Capetown 457 Comment
  UC1541567  Dactylis glomerata Harold E. Parks May 1933 4307 Humboldt Spruce Cove Trinidad; Spruce Cove Comment
  UC183807  Danthonia californica Joseph P. Tracy 1911-7-7 3385 Humboldt 3 mi nw junction of Willow Creek with Trinity River (meadows on mountain side, near Beebe's Ranch); Northern Coast Ranges 914 Comment
  SEINET6847453  Danthonia californica Wanda P. Vestal, A. G. Vestal 1937-6-22 s.n. Humboldt Kneeland prairie, about 4 miles southeast of Kneeland. Comment
  RSA34244  Danthonia californica var. americana L. Larsen 1935-5-25 s.n. Humboldt Redway [county not specified on label] Comment
  UC1103261  Danthonia californica var. americana Joseph P. Tracy 1925-7-5 7161 Humboldt High Prairie Northern Coast Ranges, Bald Mountain 1066 Comment
  HSC25997  Darmera peltata Thomas W. Nelson 1970-9-3 211 Humboldt Mad River. Comment
  SBBG44189  Darmera peltata K. K. Muller 1954-6-21 630 Humboldt Mad River Camp 2, Mad River, below Ruth Post Office Comment
  JEPS14240  Daucus carota Joseph P. Tracy 1932-9-16 10796 Humboldt near the mouth Mad R. 30 Comment
  UC642295  Daucus carota Joseph P. Tracy 1932-9-16 10796 Humboldt near mouth Mad River 30 Comment
  UCR224652  Daucus carota Dean Kelch 2007-7-25 07- 508 Humboldt North Coast Range, along Hwy 29 between Lord-Ellis Summit and Hwy 96 558 Comment
  HSC91939  Daucus carota E. Mackey 1986-12-18 Humboldt Patrick's Point State Park, entrance to park along Patrick's Point Drive Comment
  HSC37850  Daucus pusillus Peter Sorensen 1976-6-2 Humboldt Woodley Island, Humboldt Bay Comment
  SBBG5180  Daucus pusillus H. and M. Dearing 1939-5-25 3442 Humboldt sand dunes near Samoa Comment
  CDA38308  Daucus pusillus T. C. Fuller 1958-6-17 1904 Humboldt Zanone Ranch, Cape Mendocino. 0 Comment
  UC642294  Daucus pusillus Joseph P. Tracy 1936-6-8 14870 Humboldt bluffs facing ocean Trinidad 3 Comment
  UC1196317  Delphinium andersonii Joseph P. Tracy 1930-6-21 8778 Humboldt Larrabee Valley Northern Coast Ranges 701 Comment
  CAS-BOT-BC9032  Delphinium decorum subsp. tracyi Doris K. Kildale 1928-5-19 5213 Humboldt Chalk Mountain Comment
  HSC24969  Delphinium decorum subsp. tracyi Elrid H. Spinas 1948-5-15 2 Humboldt Horse Mtn. Comment
  HSC44634  Delphinium decorum subsp. tracyi Diane L. Reed 1978-5-27 125 Humboldt 2.9 mi. from Hwy. 299 on Titlow Hill Rd., Horse Mtn. Comment
  HSC56226  Delphinium glaucum G. L. Clifton, Griswold 1979-8-2 12268 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  HSC56322  Delphinium glaucum Overton, Butler 1979-8-2 12662 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  HSC85771  Delphinium hesperium Andrea Begnoche, Leonel Arguello, Bobbi Schnell 1987-4-24 41 Humboldt 24 mi. E of Blue Lake on Titlow Rd., 100 yds. from Hwy. 299 854 Comment
  SEINET6907329  Delphinium hesperium W. P. Vestal, A. G. Vestal 1937-6-20 s.n. Humboldt About 4 miles north of Petrolia. Comment
  UC160954  Delphinium hesperium subsp. hesperium Joseph P. Tracy 1909-7-31 3041 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  HSC32332  Delphinium nudicaule D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5647 Humboldt Senteney Rock, a large barren Franciscan Rock along Swayback Ridge. Comment
  CAS-BOT-BC9958  Delphinium nudicaule N. Wynne; M. Peckham; J. Barnesberger 34 Humboldt Lord Elis Quad. West side of Titlow Road, 0.35 miles S of Hwy. 299 853 Comment
  UC160942  Delphinium trolliifolium Joseph P. Tracy Jul 27 1908-Jul 30 1908 2712 Humboldt opposite Buck Mountain; Northern Coast Ranges, valley of Van Duzen River 762 Comment
  JEPS102996  Delphinium trolliifolium R. Raiche, K. Zadnik, and H. Forbes 1991-6-13 136 Humboldt 39 mi E of Rio Dell (on Hwy 36) 896 Comment
  JEPS23300  Delphinium trolliifolium Joseph P. Tracy 1927-6-5 8099 Humboldt valley of South Yager Creek Northern Coast Ranges 762 Comment
  CAS-BOT-BC194296  Deschampsia cespitosa subsp. cespitosa Joseph P. Tracy 1904-7-31 2129 Humboldt Eureka 60 Comment
  CAS-BOT-BC192545  Deschampsia cespitosa subsp. holciformis J. B. Davy; W. C. Blasdale 1899-5-1 6214 Humboldt Eureka Comment
  UCD61390  Deschampsia danthonioides A. H. Murphy 1951-5-21 Humboldt Tooby and Prior Ranch, Blocksburg. Experimental grazing pasture, 2 miles S of Blocksburg. Comment
  CAS-BOT-BC201775  Deschampsia elongata Joseph P. Tracy 1934-7-18 13434 Humboldt Grouse Mountain 1524 Comment
  HSC38624  Deschampsia elongata D. E. Anderson, J. P. Smith 1971-6-21 - 1105 Humboldt 2 mi. E of Garberville, on rd. to Alderpoint. Comment
  HSC75510  Deschampsia elongata J. O. Sawyer, R. J. Cole 1977-7-3 3019 Humboldt Environs of Mud Spring, Big Hill Rd. (FS Rd. 8N01) 1524 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
  POM210034  Deschampsia elongata H. E. Parks 1931-05 3646 a Humboldt Big Lagoon Comment
  UC187267  Deschampsia elongata Joseph P. Tracy 1911-7-7 3412 Humboldt 3 mi. n.w. of junction of Willow Creek with Trinity R. (near Beebe's Ranch, at meadows on mt. side); Northern Coast Ranges 914 Comment
  UC526671  Deschampsia elongata Joseph P. Tracy Jul 16 1930-Jul 19 1930 9092 Humboldt S. Fork Mt. near McKay Camp Northern Coast Ranges, S. Fork Mt. 1676 Comment
  HSC91892  Dicentra formosa E. Mackey 1987-3-1 Humboldt Patrick's Point State Park Comment
  UC146101  Dicentra formosa J. P. Tracy 1903-8-4 1928 Humboldt immediate vicinity Eureka 0 Comment
  CAS-BOT-BC402412  Dicentra formosa subsp. formosa S. Morrissette; J. Williams; K. Kopper 1994-5-6 040 Humboldt Intersection of Hwy 299 & Redwood Valley Rd. 609 Comment
  UC1116210  Dicentra uniflora Joseph P. Tracy 1942-6-23 17253 Humboldt near Water-dog Lakes (Trinity Summit); Trinity Summit 1828 Comment
  UC35009  Dicentra uniflora J. Burtt Davy 1899-6-23 5816 Humboldt Trinity Summit summit; North Coast Ranges 2133 Comment
  SEINET200952 Image available Dichanthelium acuminatum subsp. fasciculatum Joseph P. Tracy 1906-7-1 2517 Humboldt Eureka 61 Comment
  UC1198182  Dichelostemma X venustum Joseph P. Tracy 1927-5-21 8066 Humboldt s end Humboldt Bay; Salmon Creek Valley 15 Comment
  HSC48032  Dichelostemma capitatum subsp. capitatum Brad Klipfel 1974-5-27 406 Humboldt Horse Mtn. Comment
  HSC24401  Dichelostemma ida-maia J. O. Sawyer 1970-6-24 2216 Humboldt Ridge on Big Hill Rd., E of Hoopa 1189 Comment
  HSC3035  Dichelostemma ida-maia Paul Shields 1955-6-12 Humboldt 6 miles west of Meyers Flat Comment
  SEINET202731  Dichelostemma ida-maia Joseph P. Tracy, A. H. Murphy 1951-6-26 19568 Humboldt Vicinity of Twin Lakes and Snow Camp. Comment
  CAS-BOT-BC501021  Dichelostemma ida-maia Henry M. Pollard 1948-8-4 s.n. Humboldt Orleans Mt. 1371 Comment
  JEPS5675  Dichelostemma ida-maia Lincoln Constance 1934-5-23 604 Humboldt above Look Prairie; South Fork Eel River, Bull Creek Region 365 Comment
  UC1198179  Dichelostemma ida-maia Frank A. Graham 1935-7-27 Humboldt lower end Crogan Hole; Trinity Summit 1463 Comment
  CAS-BOT-BC500982  Dichelostemma multiflorum Harley P. Chandler 1901-6-1 1310 Humboldt Hupa Indian Reservation 152 Comment
  UC562292  Dichondra donelliana Joseph P. Tracy 1932-3-20 9785 Humboldt Trinidad; slopes facing ocean 3 Comment
  CHSC1743  Digitalis purpurea M. Anthony 1960-5-14 Humboldt N. of Arcata, Highway 101. Comment
  HSC62775  Digitalis purpurea M. Dean Griswold Jr. 1979-5-30 108 Humboldt By Cypress Hall, HSU campus Comment
  CHSC94932  Diplacus aurantiacus K. Lang; J. Lang 2005-3-16 49 Humboldt Trinidad, N. California coast. 51 Comment
  SEINET13768897 Image available Diplacus aurantiacus C. L. Hitchcock, J. S. Martin 1939-1 5439 Humboldt Shelter Cove Comment
  SEINET5741149 Image available Dipsacus fullonum Lowell E. Urbatsch, Patricia B. Cox; Alan W. Lievens 1988-1 6110 Humboldt 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
  CHSC68508  Disporum smithii Vernon H. Oswald 1997-4-10 8325 Humboldt Elk Head, north end of Trinidad State Beach. 30 Comment
  CAS-BOT-BC136196  Dodecatheon alpinum Joseph P. Tracy 1930-7-16 8930 Humboldt South Fork Mountain; in wet meadow at McKay Camp - Northern Coast Ranges 1676 Comment
  HSC102009  Dodecatheon alpinum M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-12 910 Humboldt Rustic Camp, northwest of Patterson Meadows 1512 Comment
  HSC70347  Dodecatheon hendersonii M. A. Baker 1980-6-7 1815 Humboldt Near Brush Mtn. 1128 Comment
  RSA168808  Dodecatheon jeffreyi Joseph P. Tracy 1951-6-14 19406 Humboldt Snow Camp. 1402 Comment
  UC1199497  Downingia elegans Joseph P. Tracy 1934-7-9 13360 Humboldt near Bosworth's; Larrabee Creek 457 Comment
  UC28972  Downingia elegans Chesnut and Drew Aug 1888 Humboldt Comment
  POM175550  Downingia elegans var. corymbosa F. W. Peirson 1923-7-10 3871 Humboldt About 6 miles N of Garbersville. Comment
  UCSB26681  Drosera rotundifolia Havlik, Neil 1968-8-21 Humboldt South end of Big Lagoon; north of Trinidad Comment
  HSC38525  Drymocallis glandulosa D. E. Anderson, J. P. Smith 1971-6-18 1071 Humboldt Chezem Rd., about 3 mi. E of bridge over Redwood Creek Comment
  HSC76190  Drymocallis glandulosa var. reflexa Overton, Butler 1979-7-24 9773 Humboldt Near Black Rock, close to the town of Willow Creek 1463 Comment
  RSA21039  Drymocallis glandulosa var. wrangelliana Carl B. Wolf 1937-6-19 8908 Humboldt Van Duzen River at Dunns Mill, 5 miles below Bridgeville. 91 Comment
  UC1198688  Drymocallis lactea var. austiniae Joseph P. Tracy 1933-7-25 12841 Humboldt Grouse Mountain North Coast Ranges, Grouse Mountain 1524 Comment
  UC492179  Drymocallis lactea var. austiniae Joseph P. Tracy 1932-7-11 10406 Humboldt Corral Prairie Klamath Mountains, Trinity Summit 1524 Comment
  CAS-BOT-BC158415  Drymocallis rhomboidea Doris Kildale Gillespie 1931-6-7 10609 Humboldt South Fork Mt. Blake Lookout 1726 Comment
  RSA693562  Dryopteris expansa Anstruther Davidson 1923-8-11 s.n. Humboldt Redwood Forest Comment
  UC668027  Eleocharis acicularis Joseph P. Tracy 1935-5-30 10535 Humboldt Trinity Summit, Corral Prairie 1584 Comment
  HSC44325  Eleocharis acicularis Thomas W. Nelson, Jane P. Nelson 1977-7-4 3592 Humboldt Margin of drying pond above Alder Springs 1585 Comment
  UC1103655  Eleocharis macrostachya Joseph P. Tracy 1935-8-25 14750 Humboldt Stone Lagoon 3 Comment
  UC666877  Eleocharis macrostachya Joseph P. Tracy 1934-7-30 13506 Humboldt Dry Lagoon (along coast in front of South End of Stone Lagoon) 3 Comment
  UC213331  Eleocharis macrostachya Joseph P. Tracy 1920-8-29 5396 Humboldt Little River, borders of lagoon Northern Coast Ranges 6 Comment
  CAS-BOT-BC113337  Eleocharis montevidensis Henry M. Pollard 1946-8-22 s.n. Humboldt Ullathorne Riffle, Klamath River, Orleans region. Comment
  CAS-BOT-BC113110  Eleocharis obtusa LeRoy Abrams 1918-6-16 7158 Humboldt Willow creek. Comment
  UC666879  Eleocharis pachycarpa Joseph P. Tracy 1935-6-8 13947 Humboldt Dry Lagoon (along coast in front of South End of Stone Lagoon) 3 Comment
  UC1103650  Eleocharis parishii Joseph P. Tracy 1927-5-14 8010 Humboldt near S fork Trinity River Valley 182 Comment
  HSC39716  Elymus X vancouverensis D. E. Anderson, J. P. Smith 1971-6-28 - 1262 Humboldt 2.5 mi. S of Blue Lake along the Mad River Comment
  CAS-BOT-BC227347  Elymus elymoides Joseph P. Tracy 1930-7-16 8955 Humboldt South Fork Mountain; along summit near Blake Lookout 1706 Comment
  UC526782  Elymus elymoides subsp. elymoides Joseph P. Tracy Jul 16 1930-Jul 19 1930 8955 Humboldt along summit near Blake lookout; Northern Coast Ranges, South Fork Mountain 1706 Comment
  HSC39907  Elymus glaucus J. P. Smith, Steve Selva 1970-6-30 4106 Humboldt Comment
  HSC79424  Elymus glaucus Kenneth Clark 1980-4-18 608 Humboldt Along access trail to Dead Man's Gulch. 61 Comment
  HSC9724  Elymus glaucus R. Long 1964-5-16 Humboldt Camp Tish-tang, Cambell Crk. Ranger Station near Willow Creek. Comment
  UC1103204  Elymus glaucus Joseph P. Tracy 1908-6 2856 Humboldt opposite Buck Mountain; Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  UC1103207  Elymus glaucus J. P. Tracy 1901-6-16 1143 Humboldt Immediate vicinity of Eureka 0 Comment
  CAS-BOT-BC203482  Elymus glaucus subsp. glaucus Harold E. Parks; Joseph P. Tracy 1934-6-14 11026 Humboldt Horse Mt. 1371 Comment
  HSC45112  Elymus glaucus subsp. glaucus R. Sutherland 1978-4-25 8 .25478 Humboldt 9 Comment
  HSC9747  Elymus glaucus subsp. virescens J. P. Tracy 1927-6-26 8213 Humboldt Stone Lagoon Comment
  CAS-BOT-BC234112  Elymus multisetus Joseph P. Tracy 1933-7-25 12893 Humboldt Grouse Mountain 1524 Comment
  UCD62528  Elymus repens R. Tofsrud 1949-7-1 Humboldt Ferndale. Comment
  UC717990  Elymus trachycaulus David D. Keck 1944-7-11 5491 Humboldt 3 mi ne Capetown 152 Comment
  UC1103469  Elytrigia repens Joseph P. Tracy 1937-8-13 15664 Humboldt Loleta 9 Comment
  HSC55011  Epilobium ciliatum G. L. Clifton 1979-7-31 11379 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  HSC53828  Epilobium ciliatum subsp. ciliatum Griswold, Butler 1979-7-10 6276 Humboldt Near Board Camp Mtn., close to the town of Willow Creek 1372 Comment
  RSA755161  Epilobium ciliatum subsp. glandulosum Robert F. Thorne, P. Everett 1965-8-9 35347 Humboldt Along Hwy 101 about 3 miles N of Eureka; 2 Comment
  JEPS43903  Epilobium ciliatum subsp. watsonii W. L. Jepson 1936-8-17 17911 Humboldt 2 mi s Field's Landing (near Still's ranch) Comment
  HSC38333  Epilobium ciliatum subsp. watsonii Peter Sorensen 1976-7-14 Humboldt N Spit of Humboldt Bay, S of Samoa in the vicinity of Humboldt Co. Airport Comment
  HSC98058  Epilobium densiflorum Cara Witte 2007-7-17 543 Humboldt White Oak Opening 1257 Comment
  HSC98093  Epilobium glaberrimum subsp. fastigiatum Cara Witte 2007-7-11 477 Humboldt Cold Spring. 1/2 mile south of Titlow Hill. 1391 Comment
  HSC102624  Epilobium hallianum M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-29 1611 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1579 Comment
  UC505113  Epilobium hallianum Joseph P. Tracy 1927-7-17 8274 Humboldt Three Cabins Northern Coast Ranges, Chaparral Mountain (lower w foothills of mt., borders of pond) 457 Comment
  UC505114  Epilobium hallianum Joseph P. Tracy 1932-7-14 10533 Humboldt Corral Prairie Klamath Mountains, Trinity Summit (meadow) 1524 Comment
  HSC48028  Epilobium minutum Brad Klipfel 1974-6-25 432 Humboldt Horse Mtn. Comment
  HSC73548  Epilobium minutum Gail Newton 1980-7-14 1473 Humboldt Near Last Chance Ridge 1219 Comment
  UC144086  Epilobium minutum Joseph P. Tracy 1908-6-8 2627 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  UC20073  Epilobium minutum Harley P. Chandler June, 1901 1307 Humboldt Hupa Indian Reservation North Coast Ranges Comment
  RSA249432  Epilobium minutum D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5598 Humboldt Mount Lassic and 2 smaller peaks to immediate east. 1768 Comment
  CAS-BOT-BC171845  Epilobium septentrionale Joseph P. Tracy 1933-9-9 13075 Humboldt Along S. Fork of Eel River, vicinity of Garberville 121 Comment
  CHSC12031  Epilobium septentrionale R. N. Bowman 1971-9-12 51 Humboldt Located ca. 1.7 mi se of Myers Flat off of Hwy 101. Ca. 4 ft. above s fork Eel River on e bank. 1066 Comment
  HSC16559  Epilobium septentrionale C. B. Wolf 1927-8-30 1234 Humboldt 2 mi. S of Petrolia on the Matole River near the road crossing the river Comment
  UC902175  Epilobium torreyi Joseph P. Tracy 1942-7-18 17280 Humboldt along ditch in field Garberville 152 Comment
  UC725499  Epipactis gigantea A. A. Heller 1923-7-10 13790 Humboldt river between Scotia and Pepperwood; Eel River Comment
  HSC16602  Epipactis gigantea J. Wendell Howe 1931-6-18 Humboldt Redway Comment
  CAS-BOT-BC58018  Equisetum Doris K. Kildale 1929-3-16 6939 Humboldt Bug Creek - Chaparral Mt. Comment
  CHSC94942  Equisetum laevigatum K. Lang; J. Lang 2005-3-14 13 Humboldt Trinidad, N. California coast. 51 Comment
  HSC22867  Equisetum laevigatum D. E. Anderson 1965-6-10 3792 Humboldt Along NW Pacific railroad tracks in Eureka, in harbor area and adjacent sites Comment
  CAS-BOT-BC57791  Equisetum telmateia Joseph P. Tracy 1934-6-28 13268 Humboldt By Salmon Creek. 9 Comment
  CAS-BOT-BC57795  Equisetum telmateia Doris K. Kildale 1928-2-19 4274 Humboldt Metropolitan. Comment
  HSC54551  Equisetum telmateia subsp. braunii Overton, Butler 1979-7-23 9541 Humboldt Near Titlow Hill, close to the town of Willow Creek. 1280 Comment
  HSC880  Equisetum telmateia subsp. braunii D. B. Bader 1963-3-1 10 Humboldt Second of the Clam Beach Lagoons, W of Hwy. 101. Comment
  HSC5490  Erechtites glomeratus H. E. Parks Aug 1941 24189 Humboldt Trinidad Comment
  CDA4547  Erechtites glomeratus M. A. Hart 1957-8-9 157 -57 Humboldt Between Eureka and Areata. 0 Comment
  UC535715  Eremocarpus setiger Eleanor Armstrong 1934-7-18 1129 Humboldt Richardson Grove 121 Comment
  CAS-BOT-BC293487  Erigeron aliceae Joseph P. Tracy 1930-7-18 9035 Humboldt South Fork Mountain. Near McKay Camp 1676 Comment
  CAS-BOT-BC300370  Erigeron eatonii var. plantagineus Thomas W. Nelson; James L. Nelson 1980-6-10 5395 Humboldt North Coast Ranges. Jack Rabbit Valley. Along Swayback Ridge 4-wheel drive road 1 mile south of junction with Forest Service road 1493 Comment
  CAS-BOT-BC296120  Erigeron foliosus var. confinis Alice Eastwood; John Thomas Howell 1937-6-26 5071 Humboldt Near Orleans Comment
  UC34181  Erigeron foliosus var. confinis Harley P. Chandler 1901-6-1 1427 Humboldt Klamath River 243 Comment
  POM187846  Erigeron foliosus var. mendocinus Marcus E. Jones 1931-7-16 29149 Humboldt Junction, East of Arcata. Comment
  UC594158  Erigeron glaucus S. K. Harris 1936-6-15 3380 Humboldt Trinidad Head. Comment
  HSC90479  Erigeron glaucus Jean Hanson 1980-8-28 121 Humboldt Indian (Gunther) Island, Humboldt Bay, Eureka. W end of island between dikes. Comment
  HSC39180  Erigeron philadelphicus D. E. Anderson, J. P. Smith 1971-6-28 - 1221 Humboldt Along Mad River, 2 mi. S of Blue Lake Comment
  CAS-BOT-BC214577  Erigeron philadelphicus Alice Eastwood 1907-4-20 30 Humboldt Trinidad, near Light-house Comment
  CAS-BOT-BC214591  Erigeron philadelphicus John Thomas Howell 1931-6-17 6717 Humboldt At mouth of Van Duzen River Comment
  UC164845  Erigeron philadelphicus var. philadelphicus Joseph P. Tracy 1911-7-4 3304 Humboldt along, near its mouth Willow Creek (tributary of Trinity River); Northern Coast Ranges, Trinity River, Willow Creek 182 Comment
  JEPS867  Erigeron strigosus var. strigosus Harley P. Chandler 1901-6-1 1402 Humboldt North Coast Ranges, Klamath River 243 Comment
  HSC70699  Eriogonum compositum Gail Newton 1980-7-15 1553 Humboldt Near Sims Mtn. 1311 Comment
  HSC99535  Eriogonum compositum K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-28 200 Humboldt Near North Trinity Mtn, along trail to Water Dog Lakes, Six Rivers National Forest. 1829 Comment
  HSC32328  Eriogonum compositum var. compositum D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5669 Humboldt Senteney Rock, a large barren Franciscan Rock along Swayback Ridge. Comment
  CAS-BOT-BC259155  Eriogonum latifolium A. A. Heller 1924-7-22 13873 Humboldt At Samoa opposite Eureka Comment
  JEPS95019  Eriogonum latifolium Vernon Oswald and Lowell Ahart 1997-9-4 8853 Humboldt 1.1 mi s of Highway 255 (North Spit of Humboldt Bay, w side of New Navy Base Road); North Spit of Humboldt Bay, New Navy Base Road 6 Comment
  UCR18930  Eriogonum latifolium Charlotte M. Hoak 1931-7-14 s.n. Humboldt Sand Dunes above Eureka 13 Comment
  CDA39221  Eriogonum luteolum D. Juliano 2013-8-1 PDR# 120 P06003640 Humboldt Vicinity of Carlotta, along Yager Creek, near Hwy. 36 & Central Ave. Comment
  CAS-BOT-BC261491  Eriogonum nudum var. nudum Carl B. Wolf 1927-8-30 1233 Humboldt 2 mi. so. of Petrolia on Matole [Mattole] River near point where road crosses river Comment
  UC672903  Eriogonum nudum var. nudum Joseph P. Tracy 1933-8-6 12951 Humboldt French Camp Ridge 1066 Comment
  RSA46683  Eriogonum umbellatum var. goodmanii Doris K. Kildale 1937-7-18 15131 Humboldt Horse Mt. Comment
  CAS-BOT-BC444000  Eriogonum umbellatum var. nelsoniorum James L. Reveal 2001-7-18 8346 Humboldt Along U.S. Forest Service Road 1 northwest of Grouse Mountain at milepost 14.3, about 10.3 air miles southwest of Sayler 1371 Comment
  HSC55087  Eriogonum umbellatum var. polyanthum G. L. Clifton, Griswold 1979-7-31 11755 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa. 1845 Comment
  HSC70697  Eriogonum umbellatum var. stellatum Gail Newton 1980-7-15 1556 Humboldt Near Sims Mtn. 1311 Comment
  HSC38623  Eriophyllum lanatum D. E. Anderson, J. P. Smith 1971-6-21 - 1110 Humboldt 5.2 mi. E of the bridge over Eel River at Alderpoint, near Humboldt-Trinity county line Comment
  BLMAR181  Eriophyllum lanatum var. achilleoides Donald Hazlett 1994-6-7 181 Humboldt King range, near horse Mt. Ridge rd 670 Comment
  CAS-BOT-BC301015  Eriophyllum lanatum var. achilleoides Doris K. Kildale 1926-5-9 1980 Humboldt Kneeland Prairie 762 Comment
  UC535728  Eriophyllum lanatum var. arachnoideum Eleanor Armstrong 1934-8-30 1180 Humboldt creek bed Richardson Grove 121 Comment
  CAS-BOT-BC301924  Eriophyllum staechadifolium L. R. Abrams 1916-7-18 6080 Humboldt Arcata to Trinidad Comment
  HSC47494  Erodium cicutarium Sheila Logan 1978-4-9 18 Humboldt Fieldbrook, 0.5 mi. E of McKinleyville on Murray Rd. 122 Comment
  HSC8501  Erodium cicutarium Jack Rockwell 1962-4-29 66 Humboldt N Bank of Van Duzen River, E of Hwy. 101 Comment
  UC176874  Erodium cicutarium Joseph P. Tracy 1912-6-9 3675 Humboldt Alton Northern Coast Region 30 Comment
  UC275489  Erodium cicutarium Joseph P. Tracy 1925-4-5 6959 Humboldt Lawrence Creek, at crossing of the Kneeland Road Northern Coast Ranges 609 Comment
  HSC8498  Erodium cicutarium Elrid H. Spinas 1948-5-15 14 Humboldt Horse Mtn. Comment
  POM48069  Eryngium aristulatum var. aristulatum J. B. Feudge 1923-7-27 55 Humboldt Rohnerville 15 Comment
  UC1199175  Erysimum capitatum Joseph P. Tracy 1922-5-29 6078 Humboldt head of South Yager Creek Northern Coast Ranges 762 Comment
  HSC19420  Erysimum capitatum var. capitatum J. O. Sawyer 1968-9-11 731 Humboldt 1768 Comment
  UC10569  Erysimum menziesii J. P. Tracy 1901-4-17 Humboldt Humboldt Bay Comment
  SEINET5342590  Erysimum menziesii J. Tracy 1901-4-14 1019 Humboldt Humboldt Bay. Comment
  HSC57433  Erysimum perenne G. L. Clifton, Terry Griswold 1979-7-26 10219 Humboldt Near Salmon Mtn., close to the town of Forks of Salmon 1981 Comment
  UC201391  Erythronium californicum Joseph P. Tracy 1918-5-1 4897 Humboldt Northern Coast Ranges, Kneeland Prairie 762 Comment
  UC1541242  Eschscholzia californica W. K. Parks July 1933 1398 Humboldt South Fork Mountain Comment
  CAS-BOT-BC310453  Eucephalus ledophyllus var. covillei Doris K. Kildale 1925-8-17 1214 Humboldt (Near to) Trinity Summit 1917 Comment
  JEPS20485  Euchiton gymnocephalus Joseph P. Tracy 1935-7-20 14110 Humboldt near Blue Lake (on Trinity Highway); North Coast Ranges, Trinity Highway 274 Comment
  HSC103827  Euchiton gymnocephalus Spadoni 1999-7-1 Humboldt Eureka, residential garden weed Comment
  HSC5687  Euchiton sphaericus J. P. Tracy 1936-8-23 15162 Humboldt Carlotta 30 Comment
  UC204871  Euchiton sphaericus Joseph P. Tracy 1918-10-6 5118 Humboldt 2 mi se Sequoia Park (on Connick Claim road, at Eureka); Northern Coast Ranges, Eureka 0 Comment
  SEINET11850490  Eupatorium occidentale J. P. Tracy 1950-1 19223 Humboldt Friday Ridge 1219 Comment
  HSC79446  Euphorbia crenulata Kenneth Clark 1981-5-2 1358 Humboldt 0.5 mi. W of Dead Man's Gulch. 145 Comment
  UCR94919  Euphorbia helioscopia D. L. Koutnik 1996-7-3 s.n. Humboldt Manila. Comment
  HSC100482  Euphorbia lathyris Carl C. Marshall Jun 1885 114 Humboldt Near Arcata fields, etc. Comment
  HSC12567  Euphorbia peplus D. La Conte 1970-6-15 6 Humboldt Comment
  UC1222977  Eurybia radulina Joseph P. Tracy 1950-8-20 19319 Humboldt 2 mi sw of Orleans Comment
  HSC67010  Euthamia occidentalis J. P. Smith 1971-10-9 5005 Humboldt Banks and flood plain of the Mad River above the fish hatchery. Comment
  CAS-BOT-BC310682  Euthamia occidentalis S. K. Harris; Charlotte Wilder 1938-9-7 s.n. Humboldt Bars of the Van Dusen River, above Blue Slide Comment
  HSC25940  Euthamia occidentalis Thomas W. Nelson 1970-10-31 295 Humboldt Eel River near N end of the Scotia Bluff. Comment
  UC526871  Festuca californica Joseph P. Tracy 1933-6-13 12603 Humboldt near summit on road from Hoopa w to Bair's; Hoopa Mountain 1066 Comment
  RSA183629  Festuca californica var. californica D. E. Anderson 1965-5-22 3721 Humboldt About 3 miles south of Bridgeville, on road to Blocksburg. 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
  HSC32236  Festuca idahoensis J. O. Sawyer 1970-6-24 2230 Humboldt Ridge on Big Hill Rd., E of Hoopa 1189 Comment
  UC1103728  Festuca idahoensis Joseph P. Tracy 1921-5-30 5485 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  CAS-BOT-BC278808  Festuca occidentalis Victor Duran 1933-5-11 3410 Humboldt Van Duzen River, near Bridgeville Comment
  POM126170  Festuca occidentalis Joseph P. Tracy 1900-5-22 796 Humboldt Immediate vicinity of Eureka. 0 Comment
  UCD66125  Festuca occidentalis P. B. Kennedy 1923-8-23 Humboldt Near Orleans, near top of grade - Red Bluff to Arcata. Comment
  UC1145215  Festuca rubra Joseph P. Tracy 1950-6-17 18838 Humboldt Eureka 3 Comment
  UC249792  Festuca rubra Joseph P. Tracy 1924-5-25 6686 Humboldt Big Lagoon Northern Coast Region, Big Lagoon 6 Comment
  CAS-BOT-BC278972  Festuca rubra W. R. Dudley 1893-6-20 s.n. Humboldt South Fork of Eel River Comment
  CAS-BOT-BC282520  Festuca subbiflora Joseph P. Tracy 1901-6-10 1134 Humboldt Eureka 60 Comment
  JEPS75445  Festuca subuliflora W. L. Jepson 1934-5-7 16710 Humboldt Buckeye Prairie, Bull Creek Comment
  UCD66490  Festuca subuliflora R. Tofsrud 1949-7-1 Humboldt On road from Scotia to Capetown. Comment
  HSC12788  Foeniculum vulgare M. J. Athey 1970-12-5 27 Humboldt Arcata Comment
  SD39959  Fragaria chiloensis Charlotte M. Hoak 1931-7-14 2103 Humboldt Eureka, sand dunes on bar Comment
  HSC18609  Fragaria vesca E. W. Styskel 1963-3-3 5 Humboldt 3 mi. SE of Korbel on Snow Camp Rd. 290 Comment
  CAS-BOT-BC457923  Fragaria vesca subsp. californica Doris K. Kildale 1926-3-23 1613 Humboldt Alton Hill Comment
  HSC102047  Fragaria virginiana M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-13 950 Humboldt Along trail from Rustic Camp to Patterson Meadows 1534 Comment
  HSC18394  Frangula californica P. W. Shields May 1955 Humboldt 2 mi N of Willow Creek Comment
  CAS-BOT-BC52730  Frangula californica subsp. californica Doris K. Kildale 1928-10-7 6754 Humboldt Trinity River at mouth of Willow Creek Comment
  CAS-BOT-BC59955  Frangula purshiana Henry M. Pollard 1946-9-2 s.n. Humboldt Orleans Mt. 1524 Comment
  HSC18413  Frangula purshiana J. W. Johnson 1962-4-19 1254 Humboldt Arcata, woods of the Miller Farm, Samoa Peninsula Comment
  HSC18415  Frangula purshiana G. B. Kendall 1965-5-8 7 Humboldt 1.0 mi S of Trinidad on Hwy. 101 Comment
  HSC30335  Frangula purshiana Dale R. Gradek 1974-4-17 38 Humboldt 0.25 mi N of intersection of Dows Prairie Rd and Grange Rd. Comment
  HSC39943  Frangula purshiana Linda M. Barker 1976-7-5 1648 Humboldt 3 mi. W of Arcata. Comment
  HSC63001  Frangula purshiana David Wheeler 1979-5-17 114 Humboldt Stagecoach Rd., 1 mi. from the Trinidad Post Office Comment
  CAS-BOT-BC217699  Fraxinus latifolia Doris K. Kildale 1927-5-15 3293 Humboldt Petrolia, Mattole River Comment
  RSA46884  Fraxinus latifolia Doris K. Kildale 1926-4-18 1783 Humboldt Bridgeville on road to McClellan Mt. Comment
  SEINET5012890  Fraxinus latifolia Unknown 1995-4-26 1387 Humboldt Six Rivers Ntl Forest. Hwy 36, 2km W of town. Comment
  CAS-BOT-BC136027  Fritillaria affinis Myrtle Paulson 1918-4-28 s.n. Humboldt Eureka Comment
  UC1005680  Fritillaria affinis Frank W. Gould 1939-5-30 830 Humboldt Horse Mountain, about half-way up mountain road Horse Mountain 1000 Comment
  CAS-BOT-BC124019  Fritillaria purdyi Carlton Elmer Purdy 1901-4-1 s.n. Humboldt Kneeland Comment
  HSC100646  Galium Carl C. Marshall Jun 1886 49 Humboldt Pilot Creek. Comment
  HSC69634  Galium aparine R. Kalal 1980-6-3 25 Humboldt Along Samoa Blvd. 2 Comment
  HSC73541  Galium aparine Gail Newton 1980-7-14 1477 Humboldt Near Last Chance Ridge. 1219 Comment
  HSC77962  Galium aparine L. P. Janeway, Paul Wilson 1984-5-7 761 Humboldt N Spit of Humboldt Bay, on BLM lands near the Coast Guard Station 3 Comment
  RSA273400  Galium bolanderi Thomas W. Nelson, Jane Nelson 1976-7-1 2896 Humboldt North of Bear Creek 1463 Comment
  RSA698804  Galium californicum J. R. Bruff 1937-8-17 916 Humboldt Richardson Grove. Comment
  UC169003  Galium mexicanum var. asperulum Joseph P. Tracy 1908-6 2861 Humboldt opposite Buck Mountain; Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  UC35332  Galium muricatum C. C. Marshall 1888-1 Humboldt Comment
  UC602539  Galium parisiense Joseph P. Tracy 1911-7-4 3278 Humboldt near mouth of Willow Creek; Northern Coast Ranges, Valley of Trinity River 152 Comment
  POM266215  Galium parisiense Joseph P. Tracy 1939-8-5 16378 Humboldt Dinsmore's. Comment
  UC602520  Galium porrigens Joseph P. Tracy 1926-4-11 7406 A Humboldt Bridgeville 198 Comment
  JEPS6537  Galium triflorum W. L. Jepson 1902-6 1911 Humboldt Pepperwood Comment
  UC1199343  Gamochaeta ustulata Joseph P. Tracy 1935-5-25 13835 Humboldt Fort Seward 106 Comment
  UC127829  Gamochaeta ustulata Joseph Burtt Davy and Walter C. Blasdale 1899-5 5465 Humboldt near Elk Prairie; North Western California Comment
  UC562618  Gamochaeta ustulata Joseph P. Tracy 1936-5-29 14830 Humboldt 2 mi n Orick (on Bald Hills road) 152 Comment
  CAS-BOT-BC200578  Garrya buxifolia Carl B. Wolf 1927-8-28 1169 Humboldt Lord Ellis Road to Blue Lake, 9 mi. from Willow Creek, 2 mi. from summit Comment
  HSC56997  Garrya buxifolia Overton, Butler 1979-7-24 9574 Humboldt Near Titlow Hill, close to the town of Willow Creek 1097 Comment
  HSC67509  Garrya buxifolia J. P. Smith, J. O. Sawyer 1973-5-12 6703 Humboldt 10.4 mi. from Redwood Creek on Hoopa Rd. Comment
  HSC72801  Garrya buxifolia Gail Newton 1980-6-17 212 Humboldt Near Onion Mtn. 1341 Comment
  UC1196889  Garrya buxifolia Joseph P. Tracy 1938-6-13 15906 Humboldt Horse Mountain 1402 Comment
  CAS-BOT-BC188536  Garrya elliptica J. P. Tracy 1901-4-14 1030 Humboldt Sand Hills of Ocean Beach at Samoa, opposite Eureka Comment
  RSA183514  Garrya elliptica R. I. Bonn 1965-3-5 3 Humboldt Four miles west of Arcata on Lanphere Road. Comment
  SBBG22046  Garrya elliptica R. F. Thorne 1957-9-3 19023 Humboldt Patrick's Point State Park Comment
  CAS-BOT-BC182145  Garrya fremontii L. B. Kildale 1931-10-1 s.n. Humboldt Bug Creek, Caparall Mt. 1097 Comment
  HSC99050  Garrya fremontii Cara Witte 2008-6-18 750 Humboldt Horse Mountain Botanical Area. Approximately 1 mile east of junction 6N36 and 6N36A. 1394 Comment
  UC1196892  Garrya fremontii Joseph P. Tracy 1939-8-16 16408 Humboldt Horse Mountain 1432 Comment
  CAS-BOT-BC282613  Gastridium phleoides L. R. Abrams 1916-7-11 6025 Humboldt Mouth of Grizzly Creek on Van Duzen River Comment
  SEINET10559581  Gastridium phleoides Harley P. Chandler Chandler 1506 Humboldt Klamath River. 427 Comment
  CAS-BOT-BC58915  Gaultheria shallon Doris K. Kildale 1927-9-9 3958 a Humboldt Big Lagoon Comment
  HSC76367  Gaultheria shallon Teresa Prendusi 1981-7-23 357 Humboldt Near Black Mountain. 890 Comment
  HSC7807  Gaultheria shallon D. E. Anderson 1961-8-27 1758 Humboldt 8 mi. W of Redwood Creek Br. along Hwy. 299 Comment
  HSC7813  Gaultheria shallon D. B. Bader 1963-4-1 48 Humboldt Second of the Clam Beach lagoons, W of Hwy. 101, E bank of the lagoon Comment
  UC419064  Gaultheria shallon Joseph P. Tracy, H. E. Parks 1930-9-15 766 Humboldt Kneeland Bald Hills, Lawrence Creek Lawrence Creek; Kneeland Bald Hills, Lawrence Creek Comment
  HSC54658  Gayophytum diffusum subsp. parviflorum Overton, Butler 1979-7-25 9877 Humboldt Near Sims Mtn., close to the town of Willow Creek 1295 Comment
  UC505121  Gayophytum diffusum subsp. parviflorum Joseph P. Tracy 1932-7-11 10401 Humboldt Corral Prairie Klamath Mountains, Trinity Summit 1524 Comment
  JEPS64793  Genista monspessulana W. L. Jepson 1932-7-28 16435 Humboldt Dyerville 91 Comment
  UCD105720  Genista monspessulana Joseph M. DiTomaso 1976-3-28 342 Humboldt Arcata, 3rd and 'D' streets. Comment
  UC179966  Gentiana sceptrum Joseph P. Tracy 1914-9-6 4610 Humboldt between High Prairie and Snow Camp; Northern Coast Ranges, Bald Mountain 1219 Comment
  UC213322  Gentianopsis simplex Joseph P. Tracy 1919-9-22 5275 Humboldt Trinity Summit Northern Coast Ranges, Trinity Summit 1828 Comment
  UC165808  Geranium core-core Joseph P. Tracy 1909-6-13 2990 Humboldt Blue Lake Northern Coast Ranges 30 Comment
  UC1198955  Geranium molle Joseph P. Tracy 1933-5-19 12198 Humboldt Alton to Fortuna (along the Eel River); Eel River 15 Comment
  UC164809  Geranium molle Joseph P. Tracy 1906-5-6 2436 Humboldt near Hydesville; Northern Coast Region 60 Comment
  HSC8652  Geranium molle J. L. Baker 1965-4-2 30 Humboldt Humboldt Meridian, 4 mi. N of Arcata on N Bank Rd. Comment
  SD113958  Geranium pilosum Darley F. Howe 1961-8-1 3101 Humboldt 3.3 miles north of Trinidad on Highway 101. Comment
  HSC99453  Geum macrophyllum K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-7 104 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
  HSC18645  Geum macrophyllum E. W. Styskel 1963-5-19 37 Humboldt 3 mi. SE of Korbel on Snow Camp Rd. 305 Comment
  HSC102926  Gilia M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-12 882 Humboldt Patterson Meadows 1566 Comment
  SEINET6969929  Gilia capitata Wanda P. Vestal, A. G. Vestal 1937-6-22 s.n. Humboldt About 4 miles southeast of Kneeland, Kneeland Prairie, near serpentine outcrops. Comment
  UC1225824  Gilia capitata subsp. capitata Joseph P. Tracy 1948-6-13 18051 Humboldt 2 mi n Harris; near Harris 609 Comment
  CAS-BOT-BC226156  Gilia capitata subsp. pacifica Doris K. Kildale 1927-5-15 3168 Humboldt Back of Cape Mendocino Comment
  UC52485  Gilia capitata subsp. pacifica Joseph Burtt Davy and Walter C. Blasdale 1899-5 5561 Humboldt Alton Alton (Old river bluffs, North-Western California) Comment
  HSC16989  Gilia millefoliata J. R. Woodside 1963-5-19 3 Humboldt 1 1/4 mi. N of Fairhaven Comment
  JEPS16254 Image available Gilia millefoliata J. P. Tracy 1903-6-12 1921 Humboldt immediate vicinity Eureka; ; Eureka, Humboldt Co. 0 Comment
  HSC100596  Gilia tricolor Carl C. Marshall May 1887 420 Humboldt Dobbyn's Creek. Comment
  JEPS86009  Gilia tricolor subsp. tricolor Joseph P. Tracy 1938-5-1 15733 Humboldt Willow Creek Trinity River Valley 152 Comment
  SEINET10464629  Githopsis specularioides Tracy 1903-5-23 TRACY 1906 Humboldt Alder Point, on Eel River 152 Comment
  HSC39440  Glehnia littoralis subsp. leiocarpa Linda M. Barker 1976-6-22 1626 Humboldt 3 mi. W of Arcata Comment
  JEPS158  Glehnia littoralis subsp. leiocarpa unknown 1925-7-29 109 Humboldt Samoa Comment
  POM318534  Glehnia littoralis subsp. leiocarpa Patricia Wilder 1968-8-22 4418 Humboldt County campground on beach west of Ferndale off Centerville Road. 8 Comment
  RSA21037  Glehnia littoralis subsp. leiocarpa C. B. Wolf 1937-6-18 8906 Humboldt Centerville Beach. 3 Comment
  HSC102148  Glyceria elata M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-3 1055 Humboldt Patterson Meadows 1555 Comment
  HSC74696  Glyceria elata Gail Newton 1981-7-23 2286 Humboldt Near Bug Creek Butte. 1350 Comment
  HSC76548  Glyceria elata Denis Kearns 1981-7-23 433 Humboldt Near Whiteys Peak. 1524 Comment
  SEINET200359 Image available Glyceria elata J. P. Tracy 1935-7-25 114251 Humboldt Trinity Summit lower end of Brett Hole 1585 Comment
  SEINET200358 Image available Glyceria occidentalis J. P. Tracy 1930-8-3 9147 Humboldt Buck Mtn near Little Van Duzen; lower foothills of its NW slope 762 Comment
  HSC70482  Glyceria striata Gail Newton 1980-7-20 1636 Humboldt Near Bell Swamps 1426 Comment
  RSA10123  Glyceria striata Joseph P. Tracy 1926-6-6 7558 Humboldt Northern Coast Ranges, Hoopa Mountain, near summit on road west from Hoopa to Bair's. 1067 Comment
  CAS-BOT-BC303846  Gnaphalium Alice Eastwood 1923-8-14 12305 Humboldt Samoa Comment
  RSA167276  Gnaphalium involucratum Joseph P. Tracy 1948-9-26 18232 Humboldt Humboldt County: at S end of Fickle Hill, 6 miles SE of Arcata Comment
  CAS-BOT-BC302537  Gnaphalium palustre H. E. Parks; S. T. Parks 1937-8-1 24080 Humboldt Spruce Cove, Trinidad Comment
  HSC103783  Gnaphalium palustre M. Mesler, K. A. Wayman 2015-8-4 1645 Humboldt McKay Meadow 1545 Comment
  SEINET10474256  Gnaphalium purpureum Mary Susan Taylor 1977-8-2 Taylor 1426 Humboldt In mountains above and east of Eureka. Comment
  SEINET11849517  Gnaphalium purpureum Unknown 1936-1 13397 Humboldt near Garberville Comment
  HSC29721  Goodyera oblongifolia J. D. Ackerman 1973-12-17 122 Humboldt 2 mi. N of Manila Comment
  IRVC21928  Goodyera oblongifolia J. W. Johnson Jul 1962 1075 Humboldt Base of the Samoa Peninsula in the Lamphere-Christensen Dunes Preserve. Comment
  UC1212573  Goodyera oblongifolia Francia Chisaki, Helen Sharsmith 1959-8-22 4757 Humboldt Inner North Coast Ranges, Happy Camp, just over line from Trinity County Happy Camp Happy Camp; Inner North Coast Ranges, Happy Camp 914 Comment
  JEPS25052  Gratiola neglecta Joseph P. Tracy 1920-8-15 5378 Humboldt Klamath River Bluff Creek; Northern Coast Ranges, Klamath River at Bluff Creek 152 Comment
  CAS-BOT-BC304740  Grindelia hirsutula John Thomas Howell 1937-7-31 13720 Humboldt Salt marsh bordering Humboldt Bay at Arcata Comment
  JEPS93180  Grindelia hirsutula Margriet Wetherwax and Kevin Downing 1993-8-9 2458 Humboldt Eureka Slough Humboldt Bay (s side, near Bayside Rd. and Myrtle Marsh, at end of road to church, on e side of bay, just n of Eureka) 5 Comment
  RSA302649  Grindelia hirsutula J. R. Shevock 1972-3-27 1480 Humboldt Cape Mendocino. 46 Comment
  UC199436  Grindelia hirsutula Joseph P. Tracy 1938-7-15 16075 Humboldt Mouth of Eel River 3 Comment
  RSA638980  Grindelia stricta var. stricta R. F. Thorne, Percy C. Everett 1965-8-7 35204 Humboldt Samoa Peninsula. 0 Comment
  RSA861  Grindelia stricta var. stricta E. R. Johnson 1928-8-25 1145 Humboldt Eureka Comment
  HSC100584  Habenaria sparsiflora Carl C. Marshall Jun 1886 315 Humboldt Mud Spring Camp. Comment
  POM169139  Hastingsia alba Jos Burtt Davy 5855 Humboldt Near Trinity Summit [Humboldt-Trinity County line] Comment
  UC3687  Hastingsia alba H. N. Bolander 1860-1-1 6559 Humboldt Red Mountains Comment
  UC450223  Hazardia whitneyi var. discoidea Joseph P. Tracy 1919-9-23 5287 Humboldt Trinity Summit Northern Coast Ranges, Trinity Summit 1828 Comment
  UC582669  Helenium bigelovii Joseph P. Tracy 1930-7-16 8936 Humboldt wet meadow at McKay Camp; South Fork Mountain 1676 Comment
  CAS-BOT-BC306863  Helenium bolanderi Doris K. Kildale 1927-6-26 3592 Humboldt Patrick's Point Comment
  CAS-BOT-BC306872  Helenium bolanderi Dr. A. Kellogg; W. G. W. Harford 1868-1-1 469 Humboldt Unspecified Comment
  SEINET10673347 Image available Helenium bolanderi Albert Kellogg, W. G. W. Harford 1868-1 Kellogg 469 Humboldt Comment
  JEPS35522  Helenium puberulum W. L. Jepson 1921-9-10 9458 Humboldt flat at Philipsville Comment
  UC32241  Helenium puberulum C. C. Marshall 1888-1-1 Humboldt Comment
  HSC5819  Hemizonia congesta subsp. tracyi H. E. Parks May 1934 5076 Humboldt Bridgeville 152 Comment
  LA203693  Hemizonia congesta subsp. tracyi S. K. Harris; 1936-6-20 sn Humboldt above Van Duzen River about 1 mi. W of Bridgeville Comment
  UC180195  Hemizonia congesta subsp. tracyi Joseph P. Tracy 1914-7-5 4570 Humboldt Bald Mountain 1066 Comment
  CHSC31319  Heracleum lanatum Mark Stopher 1980-6-4 89 Humboldt Occasional in dike off upland habitat along Elk River near Rte 101 Bridge. 1 Comment
  UC673044  Heracleum lanatum Joseph P. Tracy 1940-9-26 16730 Humboldt s. end Humboldt Bay (Salmon Creek Valley); , Salmon Creek Valley 9 Comment
  UC673045  Heracleum lanatum Joseph P. Tracy 1940-9-26 16730 Humboldt s. end Humboldt Bay (Salmon Creek Valley); , Salmon Creek Valley 9 Comment
  HSC102572  Heracleum maximum M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-29 1559 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1579 Comment
  HSC55976  Heracleum maximum G. L. Clifton 1979-7-31 11369 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  UC169086 Image available Hesperevax sparsiflora var. brevifolia Joseph P. Tracy and Ernest B. Babcock 1912-5-12 3639 Humboldt Bucksport; Humboldt Bay 0 Comment
  SEINET10460664  Heterocodon rariflorum Tracy TRACY 5009 Humboldt WHITE THOME VALLEY Comment
  UCSB30616  Heterotheca oregona Edwards, David 1974-8-1 Humboldt Near E. bank of Mad River north of its junction with Puter Creek, ca. 2 mi. SW of Korbel 3 Comment
  JEPS2472  Heterotheca oregona var. rudis Joseph P. Tracy 1930-7-27 9112 Humboldt near Petrolia; North Coast Ranges, Mattole River 15 Comment
  UC1222388  Heuchera micrantha Joseph P. Tracy 1950-6-8 18717 Humboldt 2 mi s Ferndale (at the Sand Cut, Wild Cat Road) Comment
  CAS-BOT-BC420725  Heuchera micrantha var. diversifolia Lincoln Constance; Reed C. Rollins 1942-5-12 2883 Humboldt Mouth of Bluff Creek, 6 miles NE of Weitchpec 152 Comment
  UC154083  Heuchera micrantha var. diversifolia Joseph P. Tracy 1908-6 2865 Humboldt Valley of Van Duzen River (opposite Buck Mountain); Northern Coast Ranges 762 Comment
  HSC56185  Heuchera rubescens Gilbert Muth 1979-8-1 12117 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1677 Comment
  CAS-BOT-BC312388  Hieracium albiflorum Doris K. Kildale 1927-7-17 3752 Humboldt Bug Creek 792 Comment
  SEINET11847693  Hieracium albiflorum J. P. Tracy 1948-1 18181 Humboldt E of Grove's Prairie near Elk Camp on Grizzly Camp Road, Trinity Summit 1524 Comment
  UC1069597  Hieracium albiflorum H. L. Person 1932-7-16 Humboldt highway n Trinidat; Rock Point Quad. Comment
  HSC56999  Hieracium bolanderi Overton, Butler 1979-7-24 9580 Humboldt Near Titlow Hill, close to the town of Willow Creek 1097 Comment
  SEINET181184  Hierochloe occidentalis Bassett Maguire, Ruth Maguire; CB Maguire 1934-6-8 15071 Humboldt Bolling Grove State Park ; unspecified Comment
  UC1196930  Hippuris vulgaris Joseph P. Tracy 1934-7-2 13284 Humboldt mouth of Little R. 1 Comment
  CAS-BOT-BC280739  Holcus lanatus Ashley C. Browne 1936-6-11 s.n. Humboldt Patrick's Point State Park Comment
  POM352400  Holcus lanatus Thekla Mohr 1918-07 3344 Humboldt Eel River. Comment
  UC1103731  Holcus lanatus J. P. Tracy 1901-4-7 1012 Humboldt immediate vicinity Eureka; immediate vicinity of Eureka 0 Comment
  UC1103733  Holcus lanatus Joseph P. Tracy 1948-7-31 18080 Humboldt Eureka 30 Comment
  UC180502  Holcus mollis Joseph P. Tracy 1914-9-13 4626 Humboldt Eureka Northern Coast Region, Eureka 0 Comment
  HSC57434  Holodiscus discolor G. L. Clifton, Griswold 1979-7-26 10223 Humboldt Near Salmon Mtn., close to the town of Forks of Salmon 1981 Comment
  HSC58138  Holodiscus discolor Gilbert Muth 1979-8-1 12156 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1677 Comment
  HSC64190  Holodiscus discolor J. O. Sawyer, M. A. Ericksen 1979-6-23 3378 Humboldt Slopes below Mill Creek Lakes 1585 Comment
  UC154212  Holodiscus discolor J. P. Tracy 1909-7-3 3002 Humboldt immediate vicinity of Eureka (near Ocean View Cemetery) 0 Comment
  HSC102138  Holodiscus discolor var. discolor M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 1042 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  HSC38770  Hordeum brachyantherum J. D. Ackerman 1975-6-10 463 Humboldt 1 mi. N of Samoa Blvd. and Samoa bridge Rd. intersection. S of Manila. Near Railroad tracks Comment
  SEINET200843 Image available Hordeum brachyantherum Joseph Tracy, Roland von Bothmer; 1980 1911-6-25 3252 Humboldt Bucksport. Region about Humboldt Bay 0 Comment
  SEINET200844 Image available Hordeum jubatum Joseph P. Tracy 1927-7-16 8249 Humboldt Mouth of Elk River. 3 Comment
  UC38634  Hordeum marinum subsp. gussoneanum Harley P. Chandler 1901-6-1 1431 B Humboldt Klamath River North Coast Ranges, Klamath River 335 Comment
  HSC104057  Hordeum murinum C. Reynolds 2015-4-28 41 Humboldt Along trail through Arcata Marsh, near Interpretive Center 5 Comment
  HSC104047  Hordeum murinum subsp. murinum Kyle Brown Apr 2015 31 Humboldt Along trail at Ma-le'l Dunes 3 Comment
  UC14220  Horkelia californica subsp. dissita Chestnut and Drew 1888-5-1 Humboldt Grouse Creek Comment
  NY15458  Hosackia denticulata V. K. Chesnut 1888-7-10 s.n. Humboldt Along Mad River, near Jarnigan's Comment
  HSC41272  Hosackia oblongifolia Brad Klipfel 1974-6-25 418 Humboldt Horse Mtn., along the creek just above Horse Mtn. mine. Comment
  HSC58539  Hosackia oblongifolia var. oblongifolia Overton, Butler 1979-7-23 9469 Humboldt Near Horse Mtn. Creek, close to the town of Willow Creek 1326 Comment
  HSC99253  Hosackia oblongifolia var. oblongifolia Jimerson, J. Pageau 1979-8-10 717 Humboldt Near Tish Tang A Tang Ridge, close to the town of Hoopa 1464 Comment
  HSC100517  Hosackia purshiana Carl C. Marshall Jun 1885 83 Humboldt Near Bug Creek. Comment
  SEINET957086  Hosackia rosea A. M. Ottley 1914-1 4599 Humboldt Same locality as 4576. Bald Mountian between high prairie and snow camp. 1219 Comment
  HSC13557  Hydrophyllum occidentale H. E. Parks, J. P. Tracy 1935-6-16 Humboldt Buck Mtn. Comment
  SBBG28785  Hydrophyllum occidentale L. Constance, A. A. Beetle, J. P. Tracy 1940-5-17 2618 Humboldt lower slopes of Buck Mtn near Eureka 792 Comment
  HSC57872  Hypericum anagalloides Walter Overton, Butler 1979-7-31 11401 Humboldt Near Water Dog Lakes, close to the town of Hoopa 1830 Comment
  CAS-BOT-BC400794  Hypericum anagalloides Doris K. Kildale 1928-7-29 5933 Humboldt Kinman Pond. Bear River Ridge Comment
  UC108651  Hypericum concinnum unknown 1148 Humboldt Eel R. 548 Comment
Read comments
Feb 5 2011
  POM203702  Hypericum formosum var. scouleri I. L. Wiggins 1932-7-18 5886 Humboldt Boggy meadow between Arcata and Bayside Comment
  POM285808  Hypericum perforatum Lyman Benson 1928-7-14 522 Humboldt Spring 10 miles N of Mendocino Line, Redwood highway. 457 Comment
  HSC103990  Hypochaeris glabra M. F. Norman 2015-4-11 4 Humboldt Arcata, Ma-le'l Dunes Comment
  CAS-BOT-BC311432  Hypochaeris radicata Alice Eastwood 1923-8-16 12332 Humboldt Carlotta Comment
  CAS-BOT-BC206849  Iliamna latibracteata Carl Purdy 1938-8-1 s.n. Humboldt Willow Creek Comment
  HSC15970  Iliamna latibracteata H. E. Parks, S. T. Parks Jun 1935 5593 Humboldt E side of Prairie Creek, N of Orick Comment
  UC302050 Image available Iliamna latibracteata Joseph P. Tracy 1926-6-12 7585 Humboldt Prairie Creek 152 Comment
Read comments
Feb 27 2012
  UC204418  Ionopsidium acaule Mrs. R. D. Douglas 1918-5-4 Humboldt near Ferndale Cemetary (Ferndale); Northern Coast Ranges, Ferndale 15 Comment
  HSC102642  Ipomopsis aggregata subsp. aggregata M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-13 964 Humboldt Forest edge surrounding Patterson Meadows 1566 Comment
  RSA366781  Iris Anstruther Davidson 1918-07 3343 Humboldt Eel River. Comment
  JEPS3745  Iris Rimo Bacigalupi with L. Constance, R. Moran, R. L. Rodriguez and S. Carlquist 1951-6-14 3414 Humboldt just below Snow Camp Mountain, about Snow Camp meadow, ridge between Mad River and Redwood Creek (Bald Mountain ridge) 1432 Comment
  SEINET4170668  Iris W. W. Eggleston 1913-6-8 6 Humboldt Calaveras Ranger Station. 1000 Comment
  HSC79354  Iris chrysophylla T. Jimerson, J. Pageau 1980-5-16 900 Humboldt Orleans, on FS Rd. 12N21 where it joins FS Rds. 11N30 and 11N38, Orleans Rd., ridge saddle 915 Comment
  HSC13857  Iris douglasiana Elrid H. Spinas 1948-6-16 59 Humboldt Horse Mtn. Comment
  HSC69580  Iris douglasiana R. Kalal 1980-6-3 5 Humboldt Along Fickle Hill Rd., 0.8 mi. E of its junction with 11th St. 189 Comment
  HSC13859  Iris douglasiana S. S. Stutz 1963-5-4 34 Humboldt 7 mi. SE of Arcata on Fickle Hill Rd. Comment
  HSC13863  Iris douglasiana W. R. Brigham 1962-5-20 19 Humboldt End of old Hwy. 101, N of Big Lagoon Rd. Comment
  HSC13864  Iris douglasiana John A. DuBois 1962-5-5 17 Humboldt 20 mi. E of Arcata Comment
  JEPS17241  Iris douglasiana Lincoln Constance 1934-5-31 763 Humboldt from w boundary of park to Grasshopper Pk. (Squaw Cr.) (Bull Creek flat, along Bull Creek, n side of creek); South Fork Eel River, Bull Creek Region Comment
  BLMAR624  Iris purdyi Jennifer Wheeler 2011-6-1 624 Humboldt Lacks Creek, Bair rd near pickle springs 609 Comment
  SEINET3875944  Iris tenax subsp. klamathensis T. Jimerson, J. Pageau 1979-4-27 438 Humboldt On Ishi Pishi Road, 1.7 mi. south of intersection with Forest Road 11N11, Orleans.; 0 213 Comment
  RSA0000278  Iris tenax subsp. klamathensis Lee W. Lenz 1953-5-13 18296 Humboldt Wooded hillsides along Klamath River, Orleans. 122 Comment
  UC14924  Iris tenuissima Harley P. Chandler Jun 1901 1529 Humboldt Klamath River; North Coast Ranges Comment
  HSC44786  Iris tenuissima Maralyn O'Meara 1972-6-8 96 Humboldt Along Bald Hills Rd., 8 mi. E of junction with Hwy. 101 Comment
  CDA14235  Isatis tinctoria R. Spadoni 1998-5-11 s.n. Humboldt Hwy 299 near Blue Lake. 0 Comment
  UC1173727  Isatis tinctoria Joseph P. Tracy 1939-4-29 16239 Humboldt Klamath River at mouth of Slate Creek; Klamath River, Slate Creek 121 Comment
  UC667941  Isoetes howellii Joseph P. Tracy 1935-5-25 13841 Humboldt Fort Seward 106 Comment
  HSC83037  Jaumea carnosa A. L. Eicher 1985-8-17 Humboldt Marsh bordering Humboldt Bay, 0.2 mi. S of the mouth of Jacoby Creek. 1 Comment
  SEINET11261291  Jaumea carnosa C. C. Harris, S. K. Harris 1939-8-26 994 Humboldt South shore of Humboldt Bay.; 0 Comment
  UC1199148  Jaumea carnosa J. P. Tracy 1901-8-7 1251 Humboldt salt marsh Samoa (immediate vicinity of Eureka) 0 Comment
  UC184004 Image available Juncus breweri Joseph P. Tracy 1901-8-7 1272 Humboldt ocean beach at Humboldt Bay Northern Coast Region, Humboldt Bay; Humboldt Bay Comment
  UCD141534  Juncus ensifolius Malcolm A. Nobs; S. Galen Smith 1949-8-3 1199 Humboldt Southern outskirts of Eureka. Comment
  BLMAR312  Juncus ensifolius Jennifer Anthony-Wheeler July, 2002 312 Humboldt South Spit, near trail to salt marsh 6 Comment
  HSC91871  Juncus ensifolius E. Mackey 1987-7-4 Humboldt Patrick's Point State Park, N of Wedding Rock Comment
  UC1152146  Juncus ensifolius Joseph P. Tracy 1938-9-25 16171 Humboldt Lake Prairie Comment
  HSC57891  Juncus exiguus Walter Overton, Marvin Butler 1979-7-31 11456 Humboldt Near Water Dog Lakes, close to the town of Hoopa 1830 Comment
  HSC58092  Juncus exiguus G. L. Clifton, Terry Griswold 1979-8-1 12005 Humboldt Near N Trinity Mtn., close to the town of Hoopa 1799 Comment
  POM160292  Juncus nevadensis var. inventus Joseph P. Tracy 1925-10-18 7293 Humboldt Big Lagoon. 6 Comment
  HSC57985  Juncus occidentalis G. L. Clifton, Terry Griswold 1979-7-31 11720 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1805 Comment
  HSC98581  Juncus occidentalis Cara Witte 2008-7-16 924 Humboldt Mud Lake. Off National Forest 1, near Buck Flat. 1569 Comment
  POM203238  Juncus occidentalis M. S. Jussel 1931-5-2 s.n. Humboldt 20 mi. N. of Garberville. Comment
  UC1152001  Juncus occidentalis Joseph P. Tracy 1937-8-3 15609 Humboldt near Blue Lake (along Mad River); Mad River 15 Comment
  UC1152003  Juncus occidentalis Joseph P. Tracy 1938-6-17 15965 Humboldt near Petrolia (hills between town and ocean); Domingo Hill Comment
  NY21391  Juniperus communis F. W. Hunnewell 1925-7-22 9707 Humboldt This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  JEPS66616  Kalmia polifolia subsp. microphylla Joseph P. Tracy 1935-7-26 14261 Humboldt Trinity Summit, at Water Dog Lakes Water Dog Lakes; Trinity Summit, Water Dog Lakes 1828 Comment
  RSA46967  Keckiella corymbosa Carl B. Wolf 1927-8-30 1237 Humboldt 2 miles S of Petrolia on the Matole River near point where the road crosses the river. Comment
Read comments
Mar 27 2012
  UC162566  Keckiella lemmonii Joseph P. Tracy 1911-7-11 3504 Humboldt opposite Sugar Bowl Ranch (near Willow Creek, hill slopes at w side of Trinity River, opposite Sugar-bowl ranch); Northern Coast Ranges 304 Comment
  CDA3134  Kochia iranica J. F. Hart 1958-12-1 1618 Humboldt 0 Comment
  HSC73476  Koeleria macrantha Gail Newton 1980-7-11 1338 Humboldt Near Red Mtn. 1341 Comment
  UC1103698  Koeleria macrantha Joseph P. Tracy 1929-7-4 8627 Humboldt French Camp Ridge 1066 Comment
  UC50517  Koeleria macrantha Joseph Burtt Davy and Walter C. Blasdale 1899-6-12 5478 Humboldt Elk Prairie Comment
  UC154280  Kopsiopsis strobilacea Mrs. M. H. Manning 1901-1 Humboldt Hupa Valley Comment
  UC552313  Lactuca biennis Joseph P. Tracy 1934-8-14 13583 Humboldt near Myers; North Coast Ranges 60 Comment
  UC552314  Lactuca biennis Joseph P. Tracy 1934-8-14 13583 Humboldt near Myers; North Coast Ranges 60 Comment
  UC552315  Lactuca biennis Joseph P. Tracy 1934-8-14 13583 Humboldt near Myers; North Coast Ranges 60 Comment
  RSA18146  Lapsana communis C. B. Wolf 1927-8-22 801 Humboldt Big Lagoon. Comment
  UC204782  Lapsana communis Joseph P. Tracy 1918-6-23 4957 Humboldt outskirts of Arcata, around Humboldt bay Northern Coast Ranges, Humboldt Bay 60 Comment
  UC175637  Lathyrus jepsonii var. californicus Joseph P. Tracy 1913-6-13 4110 Humboldt opposite Buck Mountain (Dinsmore's Ranch); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  HSC103970  Lathyrus littoralis C. Reynolds 2015-4-12 32 Humboldt Along Freshwater Beach, north of the Kuchel Visitor Center 1 Comment
  RSA183499  Lathyrus littoralis J. R. Woodside 1963-4-3 31 Humboldt One and one fourth miles north of Fairhaven. Comment
  SBBG3353  Lathyrus littoralis H. and M. Dearing 1939-5-25 3435 Humboldt near Samoa Comment
  HSC14751  Lathyrus nevadensis var. nevadensis D. E. Anderson 1962-5-1 2203 Humboldt 1 mi. W of Hoopa Comment
  JEPS64859  Lathyrus nevadensis var. nevadensis Harley P. Chandler Jun 1901 1290 Humboldt Hupa Indian Reservation North Coast Ranges 1097 Comment
  UC902096  Lathyrus nevadensis var. nevadensis Harold E. Parks and Joseph P. Tracy 1949-6-25 11659 Humboldt near Mud Springs (on the Trinity Summit Road) 1341 Comment
  UC1222407  Lathyrus polyphyllus Joseph P. Tracy 1946-6-15 17570 Humboldt near Green Point (w of Redwood Creek on Trinity Highway) 457 Comment
  UC495708  Lathyrus polyphyllus Joseph P. Tracy 1932-7-20 10735 Humboldt just w Corral Prairie; Klamath Mountains 1524 Comment
  HSC33771  Lathyrus tingitanus Lon Hall 1975-5-24 383 Humboldt Samoa Dunes, off Samoa Blvd., across from the boat landing Comment
  HSC99442  Lathyrus torreyi K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-7 92 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  POM277519  Lathyrus torreyi Lyman Benson 1928-7-12 460 Humboldt Weott Ranger Station. 61 Comment
  UC15322  Lathyrus vestitus Joseph P. Tracy May 1901 1201 Humboldt Humboldt Bay North Coast Ranges 30 Comment
  RSA64054  Lathyrus vestitus subsp. bolanderi C. L. Hitchcock 1949-6-7 19081 Humboldt Redwood Highway ca 15 miles N of Garberville. Comment
  CAS-BOT-BC325997  Layia carnosa Tom Craig 1941-6-29 s.n. Humboldt Samoa Comment
  SBBG8723  Layia carnosa H. and M. Dearing 1939-5-25 3440 Humboldt near Samoa Comment
  SEINET3147912  Layia carnosa W. C. Blasdale 1896-6-2 sn Humboldt West Eureka Comment
  SEINET10482507  Ledum glandulosum Albert Kellogg, W. G. W. Harford 1868-1 Kellogg 635 Humboldt Comment
  RSA246941  Leontodon leysseri R. F. Thorne, P. C. Everett 1965-8-8 35234 Humboldt N. edge of Eureka, E. of Hwy. 101 5 Comment
  CAS-BOT-BC89855  Lepidium nitidum Doris K. Kildale 1928-5-27 5948 Humboldt Kneeland Prairie. 853 Comment
  UC1116215  Lepidium nitidum Joseph P. Tracy 1948-5-31 17990 Humboldt Harris 762 Comment
  CAS-BOT-BC13039  Lepidium virginicum var. menziesii Volney Rattan 1878-1-1 s.n. Humboldt Hoopa Valley. Comment
  HSC35037  Leptosiphon bicolor Thomas W. Nelson, James Nelson 1975-5-24 1871 Humboldt McKeown Ranch, N of Dinsmore. Comment
  CAS-BOT-BC226709  Leptosiphon latisectus Victor Duran 1933-5-10 3403 Humboldt Near Blocksburg Comment
  UC535713  Leptosiphon latisectus Eleanor Armstrong 1934-5-18 Humboldt Richardson Grove 121 Comment
  UC1198580  Leptosiphon latisectus Joseph P. Tracy 1947-5-10 17679 Humboldt Briceland 304 Comment
  UC1199333  Lessingia nemaclada Joseph P. Tracy 1939-8-5 16374 Humboldt gravel bar of river opposite Buck Mt.; Van Duzen River, Dinsmore's 737 Comment
  HSC102123  Lewisia leeana M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 1027 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  CAS-BOT-BC283514  Leymus X vancouverensis Malcom A. Nobs; S. Galen Smith 1949-8-3 1204 Humboldt Salt marshes bordering Humboldt Bay, ca 2 miles N of Eureka Comment
  UCD64597  Leymus mollis G. L. Stebbins Jr.; G. L. Church 1941-5-26 3105 Humboldt Little River, south of Trinidad. Comment
  SEINET200641 Image available Leymus mollis subsp. mollis Joseph P. Tracy 1912-7-7 3744 Humboldt Eureka. Comment
  UC682047  Leymus mollis subsp. mollis G. L. Stebbins Jr. and G. L. Church 1941-5-26 3105 Humboldt s Trinidad; Little River Comment
  CAS-BOT-BC272246  Leymus triticoides David D. Keck 1944-7-11 5496 Humboldt Cape Mendocino 3 Comment
  UCD65598  Leymus triticoides Malcolm A. Nobs; S. Galen Smith 1949-8-3 1204 Humboldt Salt marshes bordering Humboldt Bay, CA. 2 miles N of Eureka. Comment
  JEPS17502  Ligusticum apiifolium J. P. Tracy 1900-10-7 971 Humboldt Eureka Comment
  HSC74325  Ligusticum californicum M. A. Baker 1980-6-16 1957 Humboldt Near Onion Mtn. 1280 Comment
  HSC98754  Ligusticum californicum Cara Witte 2007-7-19 551 Humboldt Forest Service Road 4N32. 1.5 miles east of intersection with 4N70. Grouse Mountain Lookout. 1547 Comment
  HSC102175  Ligusticum grayi M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-3 1088 Humboldt Patterson Meadows 1555 Comment
  UCR39795  Lilium bolanderi D. K. Imper 1983-7-12 s.n. Humboldt Six Rivers National Forest. Along13N01 roadside c. 3.5 mi north of Blue Lake 915 Comment
  HSC35939  Lilium columbianum Thomas W. Nelson, Jane P. Nelson, James Nelson 1975-7-15 2032 Humboldt Just E of Redwood National Park along Bald Hills Rd. Comment
  RSA46685  Lilium columbianum Doris K. Kildale 1937-7-18 15138 -a Humboldt Horse Mt. Comment
  RSA256735  Lilium kelleyanum A. Montalvo, J. D. Ackerman 1974-8-1 399 Humboldt 1 mile west of Kneeland P.O. on Greenwood Heights Road Comment
  JEPS109810  Lilium kelloggii Dean W. Taylor 2004-6-23 19116 Humboldt Fickle Hill Road 1.3 miles north of junction Butler Valley Road 542 Comment
  RSA256730  Lilium kelloggii A. Montalvo, J. D. Akerman 1974-8-1 399 Humboldt 1 mile west of Kneeland P.O. on Greenwood Heights Road Comment
  UC1197702  Lilium occidentale Doris Kildale 1925-7-20 Humboldt near Bayside 15 Comment
  UC1198242  Lilium occidentale Joseph P. Tracy 1913-8-31 4387 Humboldt near Indianola (on Table Bluff); Northern Coast Region, Humboldt Bay Region 0 Comment
  HSC102166  Lilium pardalinum M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-3 1076 Humboldt Patterson Meadows 1555 Comment
  UC666956  Lilium pardalinum Joseph P. Tracy 1937-7-24 15533 Humboldt head of Little Hors-Linto Creek; Trinity Summit 1371 Comment
  HSC98051  Lilium pardalinum subsp. pardalinum Cara Witte 2007-7-11 488 Humboldt Waterhole off Forest Service Road 5N10. Approximately 2 miles east of intersection with National Forest 1. 1346 Comment
  CAS-BOT-BC132963  Lilium rubescens Doris K. Kildale 1926-5-16 2001 Humboldt Miranda on South Fork of Eel River Comment
  UC1198232  Lilium rubescens J. P. Tracy 1908-7-31 2936 Humboldt near Bridgeville 152 Comment
  HSC45270  Limnanthes douglasii M. Alcasas 1978-6-3 118 Humboldt On Titlow Hill Rd., 1.3 mi. from Hwy. 299 1463 Comment
  UC1537005  Limnanthes douglasii Gordon H. True Jr. 1936-5-11 462 Humboldt 12 mi w Miranda (e of Elk Ridge); Elk Ridge 457 Comment
  CDA33609  Limnobium laevigatum David Juliano 2010-9-7 PDR# 1414284 Humboldt Loleta; Catfish Lake (a stream-fed natural pond), near Tompkins Hill Road and Hookton Road 0 Comment
  SEINET3818260  Limnorchis leucostachys Unknown 1942-1 Humboldt Comment
  UC907986  Linanthus androsaceus Joseph P. Tracy 1936-6-9 14879 Humboldt Bear River Ridge Northern Coast Ranges, Bear River Ridge 609 Comment
  UC52737  Linanthus androsaceus W. C. Blasdale 1896-6-6 Humboldt Graham's Comment
  JEPS58246  Linanthus bicolor Lincoln Constance 1934-6-4 816 Humboldt Upper Look Prairie South Fork Eel River, Bull Creek Region Comment
  JEPS58421  Linanthus filipes W. L. Jepson 1902-7-11 2016 Humboldt Martin's Ranch South Fork of Trinity River Comment
  HSC34281  Linnaea borealis subsp. longiflora K. Irwin 1975-8-16 Humboldt Grogans Hole area. Comment
  HSC59068  Linum bienne Thomas Wood 1979-5-18 193 Humboldt Arcata, adjacent and N of 2900 Janes Rd. 9 Comment
  HSC59444  Linum bienne Kenneth Clark 1979-4-18 110 Humboldt 1 block E on California Ave., in Arcata. Comment
  JEPS8444  Listera caurina Rimo Bacigalupi with J. P. Tracy, L. Constance, R. Moran, R. L. Rodriguez, and S. Carlquist 1951-6-14 3415 Humboldt ridge between Mad River and Redwood Creek; Snow Camp, Bald Mountain ridge 1432 Comment
  UC1103025  Listera cordata Joseph P. Tracy 1929-4-29 8557 Humboldt Berry's North Coast Ranges, Redwood Creek 274 Comment
  JEPS37738  Lithocarpus densiflorus W. L. Jepson and W. W. Mott Jul 3 1903-Jul 5 1903 Humboldt Briceland; sw Humboldt County Comment
  SFV7744  Lithocarpus densiflorus var. densiflorus T. Gordon, K. Kimbrough 1975-8-22 1226 Humboldt Humboldt Redwoods State Park. 61 Comment
  HSC81535  Lithophragma affine Thomas W. Nelson, Jane P. Nelson 1980-5-25 5258 Humboldt Along road from Dinsmore to Anderson Crossing, McKeown Ranch Rd. 100 m N of junction of road to Hindley Cabin 823 Comment
  HSC102632  Lithophragma campanulatum M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-29 1617 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1579 Comment
  HSC98767  Lithophragma campanulatum Cara Witte 2008-6-27 760 Humboldt Approximately 1.5 miles south of intersection National Forest 1 and 5N04. 1546 Comment
  UC667092  Lithophragma campanulatum Joseph P. Tracy 1934-4-15 13179 Humboldt Trinity River Valley at Willow Creek; Trinity River Valley, at Willow Creek 152 Comment
  CAS-BOT-BC435646  Lithophragma heterophyllum Harold E. Parks; Joseph P. Tracy 1942-5-16 11558 Humboldt Vicinity of Garberville 152 Comment
  HSC96950  Lithophragma parviflorum Elizabeth Kimbrough, Whitney Meier 2007-6-4 2 Humboldt Cold Springs Camp, 7.4 mi. S of Hwy. 299 off FS Rd. NF1 on FS Rd. 5N27 1390 Comment
  CAS-BOT-BC342348  Logfia gallica Henry M. Pollard 1945-8-26 s.n. Humboldt Between Orleans and Camp Creek, Klamath River Canyon Comment
  UC38782  Lolium multiflorum Harley P. Chandler May, 1901 1103 Humboldt Humboldt Bay; North Coast Ranges, Humboldt Bay 30 Comment
  SEINET200586 Image available Lolium perenne J. P. Tracy 1937-6-6 15331 Humboldt Ferndale 15 Comment
  SEINET200608 Image available Lolium perenne J. P. Tracy 1923-8-25 6539 Humboldt Eureka 13 Comment
  HSC90681  Lolium perenne Gail Newton 1982-6-10 3590 Humboldt Elk River Wildlife Area, Eureka Comment
  SEINET200609 Image available Lolium temulentum J. P. Tracy 1935-5-25 13893 Humboldt Dobbyn Creek 152 Comment
  SEINET5527019 Image available Lomaria spicant Hicks, Carpenter 1977-7-12 Humboldt Orick Comment
  BLMAR646  Lomatium Jennifer Wheeler 2011-5-27 646 Humboldt Lacks Creek, Oak woodland of Stormy Saddle 1097 Comment
  HSC66291  Lomatium ciliolatum var. ciliolatum M. A. Baker 1980-6-8 1896 Humboldt Near Buck Flat. 1554 Comment
  HSC63835  Lomatium dasycarpum subsp. dasycarpum M. A. Baker 1979-6-26 911 Humboldt S facing ridge Comment
  UC314597  Lomatium dasycarpum subsp. dasycarpum Joseph P. Tracy 1923-6-27 6380 Humboldt near the South Fork Trinity R. Valley; Northern Coast Ranges, Trinity R. Valley 182 Comment
  UC642258  Lomatium dasycarpum subsp. dasycarpum Joseph P. Tracy 1927-3-27 7852 Humboldt near the South Fork Trinity R. Valley 182 Comment
  JEPS16237  Lomatium dissectum var. dissectum Joseph P. Tracy 1913-6-20 4237 Humboldt lower foothhills of Buck Mt. (on its n.w. slope); Northern Coast Ranges, Buck Mt. 762 Comment
  POM32369  Lomatium dissectum var. dissectum Lincoln Constance, Alan Beetle, Joseph Tracy 1940-5-17 2617 Humboldt NW slope, Lower slopes of Buck Mtn, near Eureka. 793 Comment
  UC642328  Lomatium dissectum var. dissectum Joseph P. Tracy 1928-6-24 8460 Humboldt Valley of S. Yager Creek 762 Comment
  UC659308  Lomatium dissectum var. dissectum Lincoln Constance, Alan A. Beetle with Joseph P. Tracy 1940-5-17 2617 Humboldt lower slopes of Buck Mt. near Eureka; Buck Mt. 792 Comment
  UC21100  Lomatium dissectum var. multifidum Harley P. Chandler June, 1901 1340 Humboldt Hupa Indian Reservation North Coast Ranges, Hupa Indian Reservation 152 Comment
  HSC97232  Lomatium macrocarpum Kiera Freeman, Heather J. Perry 2007-6-4 1 Humboldt Cold Springs Camp, 8.0 mi. S of Hwy. 299 on NF1 1372 Comment
  HSC47949  Lomatium tracyi Brad Klipfel 1974-5-8 326 Humboldt Horse Mountain Comment
  OBI8842  Lomatium utriculatum Tracey Call, Viola Call 1964-6-19 2271 Humboldt 1 mi north of Harris P.O. and ca 3-1/2 mi south of Harris Jct Comment
  UC314599  Lomatium utriculatum Joseph P. Tracy 1923-7-4 6525 Humboldt Northern Coast Ranges, Valley of S. Yager Creek 762 Comment
  UC177242  Lonicera hispidula var. vacillans Joseph P. Tracy 1912-7-4 3735 Humboldt near Hydesville; Northern Coast Region 60 Comment
  CHSC11388  Lonicera involucrata var. ledebourii Lowell Ahart 1968-5-31 Humboldt Patrick's Point State Park. 30 Comment
  HSC3930  Lonicera involucrata var. ledebourii R. A. Rasp 1964-5-7 37 Humboldt 2 mi. S of Korbel on Simpson Lumber Co. land. Comment
  JEPS13670  Lonicera involucrata var. ledebourii W. L. Jepson with J. P. Tracy 1921-8-11 9408 Humboldt Big Lagoon Comment
  OBI6309  Lonicera involucrata var. ledebourii Joseph P. Tracy 1943-3-21 17413 Humboldt North Coast ranges Comment
  SEINET3523157 Image available Lotus aboriginus Joseph P. Tracy 1949-6-20 18321 Humboldt Near Boynton Prairie, 12 mi SE of Arcata Comment
  HSC26918  Lotus corniculatus Brad Klipfel 1973-7-30 219 Humboldt Samoa Comment
  UC1223438  Lotus corniculatus Joseph P. Tracy 1937-8-22 15677 Humboldt near Loleta (on Eel River bottom); Eel River Comment
  HSC98124  Lotus corniculatus Cara Witte 2007-6-28 386 Humboldt Forest Service Road 5N10. Approximately 1/2 mile east of intersection with 5N10D. 1426 Comment
  HSC98247  Lotus formosissimus D. E. Anderson 1963-5-25 2485 Humboldt 2-3 mi. N of Capetown Comment
  HSC98249  Lotus formosissimus H. E. Parks, S. T. Parks Jun 1952 24449 Humboldt Spruce Cove, Trinidad 61 Comment
  HSC44376  Lotus humistratus Thomas W. Nelson, Jane P. Nelson 1977-6-19 3512 Humboldt SW of Alder Springs along Rd. 2S08. 1524 Comment
  UC1197295  Lotus micranthus J. P. Tracy 1901-6-23 1179 Humboldt immediate vicinity Eureka 0 Comment
  UC15635  Lotus micranthus Harley P. Chandler May 1901 1136 Humboldt Humboldt Bay North Coast Ranges 3 Comment
  SEINET3694377 Image available Lotus oblongifolius Joseph P. Tracy 1930-7-16 8997 Humboldt South Fork Mountain; McKay Camp 1676 Comment
  UC1223423  Lotus pinnatus Joseph P. Tracy 1937-7-19 15461 Humboldt Larrabee Valley 731 Comment
  UC726367  Lotus purshianus var. purshianus A. A. Heller 1923-7-9 13778 Humboldt 5 mi from Arcata (near Blue Lake) Comment
  HSC25999  Lotus unifoliolatus var. unifoliolatus Thomas W. Nelson 1970-9-3 218 Humboldt Mad River. Comment
  HSC71612  Lotus unifoliolatus var. unifoliolatus J. P. Smith 1973-5-26 6835 Humboldt Scotia Bluffs along the Eel River near Rio Dell 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
  UC1197305  Lotus wrangelianus Joseph P. Tracy 1932-5-1 9844 Humboldt Alton, along Van Duzen River North Coast Ranges, Van Duzen River 30 Comment
  UC162810  Lotus wrangelianus Joseph P. Tracy 1909-5-16 2967 Humboldt near Trinidad; Northern Coast Ranges 15 Comment
  RSA21446  Lotus yollabolliensis C. B. Wolf 1937-8-12 9210 Humboldt North Coast Range, South Fork Mountain, 0.6 miles S of Blake Lookout. 1677 Comment
  UC1223268  Lupinus albicaulis var. shastensis Joseph P. Tracy 1949-8-7 18433 Humboldt on road from Hoopa to Box Camp at summit of ridge near where the road to Big Hill turns off Trinity Summit; , rd fr Hoopa to Box Camp Comment
  UC1197248  Lupinus albifrons Joseph P. Tracy 1932-5-1 9873 Humboldt Garberville; Northern Coast Ranges, Garberville 121 Comment
  UCD106638  Lupinus arboreus Logan Farm Adviser 1921-6-21 s.n. Humboldt Eureka. Comment
  POM66214  Lupinus arboreus var. arboreus Marcus E. Jones 1924-4-26 s.n. Humboldt Eureka. 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
  RSA25890  Lupinus arboreus var. arboreus Carl B. Wolf 1937-9-9 3654 Humboldt 2 miles S of Cape Mendocino. 6 Comment
  RSA331967  Lupinus arboreus var. arboreus Dave Kelly, Walter Wisura, A. Kelly 1985-7-28 4065 Humboldt Outer sand dunes near Manilla, Samoa Peninsula near Eureka Comment
  UC1197275  Lupinus bicolor Joseph P. Tracy 1939-4-18 16219 Humboldt Garberville 152 Comment
  BLMAR611  Lupinus bicolor Jennifer Wheeler 2011-4-22 611 Humboldt King range, Strawberry Rock 243 Comment
  HSC71467  Lupinus bicolor J. P. Smith, J. O. Sawyer 1973-5-12 6680 Humboldt 3.3 mi. from Redwood Creek on Hoopa Rd. Comment
  SEINET12165812  Lupinus formosus J. T. Vale 1988-1 s.n. Humboldt nr Honeydew Comment
  SEINET12154562  Lupinus latifolius J. P. Tracy 1939-1 16415 Humboldt Grouse Mtn, "Clear Lake" 1524 Comment
  UC169321  Lupinus latifolius var. latifolius Joseph P. Tracy 1912-7-21 3766 Humboldt Alton; Northern Coast Region, Alton 30 Comment
  UC176607  Lupinus polyphyllus var. polyphyllus Joseph P. Tracy 1913-6-25 4335 Humboldt opposite Buck Mountain (Dinsmore's Ranch, in the valley of the Van Duzen River); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  UC503017  Lupinus rivularis Joseph P. Tracy 1927-6-18 8189 1/2 Humboldt Capetown; Northern Coast Ranges, Capetown 304 Comment
  UC503019  Lupinus rivularis Joseph P. Tracy 1927-6-18 8189 Humboldt Capetown; Northern Coast Ranges, Capetown 304 Comment
  HSC59452  Lupinus tracyi Richard Runyon 1979-6-27 42 Humboldt Along trail to Trinity Summit Station, 50' S of intersection of Grogan hole-Devils backbone trail 1768 Comment
  UC1152129  Luzula comosa Joseph P. Tracy 1930-7-23 9128 Humboldt at Cold Springs (Grouse Mountain); , at Cold Springs 1432 Comment
  CAS-BOT-BC436746  Luzula comosa var. comosa Harley P. Chandler 1901-5-1 1159 Humboldt North Coast Ranges: Humboldt Bay 30 Comment
  JEPS121643  Luzula multiflora Jennifer Buck, Danielle Roach 2009-8-19 Humboldt Kerlin Fen, South Fork Mountain. Sloping fen on schist, NE aspect. Blake Mountain quadrangle. SFM06A Comment
  HSC56452  Luzula parviflora Griswold, Butler 1979-7-12 7213 Humboldt Near Groves Prairie, close to the town of Willow Creek. 1256 Comment
  UC249748  Luzula parviflora Joseph P. Tracy 1923-6-24 6360 Humboldt near High Prairie (Bald Mountain); Northern Coast Ranges, , nr High Prairie 1066 Comment
  UC302166  Luzula parviflora Joseph P. Tracy 1925-7-5 7171 Humboldt near High Prairie (Bald Mountain); Northern Coast Ranges, Bald Mountain 1066 Comment
  JEPS371  Lycopodiella inundata Joseph P. Tracy 1928-9-8 8504 Humboldt Big Lagoon Northern Coast Ranges (in peat bog) 6 Comment
  CAS-BOT-BC61931  Lycopodium clavatum H. E. Parks; W. K. Parks 1932-7-30 01132 Humboldt Camp 21 Hammon Lumber Company, Trinidad 152 Comment
  CAS-BOT-BC61936  Lycopodium clavatum Mrs. L. B. Kildale 1930-11-1 10755 Humboldt one mile north of Crannell, on trail to Camp 20 Comment
  OBI1071  Lycopodium inundatum Lawrence L. Kiefer 1964-5-20 1436 Humboldt Big Lagoon State Park 23 Comment
  UC34916  Lysichiton americanus W. C. Blasdale 1896-6-4 Humboldt Eureka Comment
  SEINET11261199  Lythrum hyssopifolia W. J. Ferlatte, B. D. Rogers 1966-8-15 3132 Humboldt North Bank Road, 2 miles north of Arcata.; 0 Comment
  RSA0015856  Lythrum hyssopifolia J. B. Feudge 1923-7-22 168 Humboldt Fortuna. 15 Comment
  UC89451  Madia elegans unknown Humboldt Jarnigans Comment
  RSA15579  Madia elegans subsp. elegans C. B. Wolf 1927-8-28 1162 Humboldt On the Trinity River, 3 miles from Weitchpec Comment
  HSC68000  Madia exigua J. P. Smith, Steve Selva 1970-6-30 4097 Humboldt Comment
  CAS-BOT-BC343029  Madia gracilis David D. Keck 1944-7-11 5500 Humboldt 12.3 mi. S.E. of Petrolia; halfway between upper Mattole and Honeydew, Mattole River 121 Comment
  HSC40032  Madia gracilis Thomas W. Nelson, Jane P. Nelson 1976-6-22 2880 Humboldt At Goat Hill Lookout 1666 Comment
  JEPS7504  Madia gracilis Joseph P. Tracy 1935-7-23 14132 Humboldt at Corral Prairie Trinity Summit 1584 Comment
  JEPS7505  Madia gracilis Joseph P. Tracy 1934-7-18 13432 Humboldt Grouse Mountain North Coast Ranges 1524 Comment
  OBI36372  Madia gracilis David J. Keil 1983-7-1 17268 Humboldt Ca. 13 mi W of jctn US 101 along Bull Crk Flats rd Comment
  SEINET3148089  Madia gracilis J. B. Davy, W. C. Blasdale 1899-6-19 5674 -C Humboldt Hoopa Mt. Comment
  RSA249398  Madia madioides D. E. Anderson, Thomas Nelson, S. Dowty 1972-6-17 5696 Humboldt McKeown Ranch north of Dinsmore Comment
  HSC40379  Madia sativa Linda M. Barker 1976-6-14 1592 Humboldt 3 mi. W of Arcata Comment
  RSA47169  Madia sativa Doris K. Kildale 1927-6-25 s.n. Humboldt Shelter Cove. Comment
  JEPS17994  Madia sativa George B. Rossbach 1955-6-10 550 Humboldt near Humboldt Bay (lagoon and lighthouse (between Fairhaven and end of sandy point off Eureka) Comment
  HSC89446  Maianthemum dilatatum P. A. Daly 1984-5-13 23 Humboldt Along trail at Trinidad Head 61 Comment
  HSC59443  Maianthemum dilatatum Kenneth Clark 1979-4-21 133 Humboldt By junction of Little River Rd. and Central Ave., McKinleyville Comment
  SD46488  Maianthemum dilatatum E. K. Balls, L. W. Lenz 1956-6-12 21668 Humboldt 4.7 miles south of Humboldt-Del Norte County line, U.S. Highway 101, Arcata to Crescent City. O forest floor in deep humus. 60 Comment
  HSC57027  Maianthemum stellatum Overton, Butler 1979-7-24 9648 Humboldt Near Friday Camp, close to the town of Willow Creek. 1250 Comment
  CAS-BOT-BC140132  Malus fusca L. R. Abrams; G. T. Benson 1924-5-17 10730 Humboldt Trinidad Head Comment
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Jun 17 2020
  RSA29747  Malus fusca E. K. Balls 1953-10-12 18634 Humboldt moist ditches, road to Crannell, 0.5 mi. E from Hwy 101, near first overhead bridge. 15 Comment
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May 24 2020
  SEINET10838741  Malva nicaeensis Mary Susan Taylor 1982-10-24 Taylor 5182 Humboldt T5N R1W nw sec 15. Eureka quad. Samoa, under bridge, ca. 1 mi nw of Eureka. Sea level. Sandy soils. 0 Comment
  UC168942  Marah oregana Joseph P. Tracy 1911-8-27 3532 Humboldt Eureka Northern Coast Region 0 Comment
  UC168955  Marah oregana Joseph P. Tracy 1904-7-17 2120 Humboldt near Hydesville; Northern Coast Region 60 Comment
  SD51266  Marah oregana Darley F. Howe 1961-8-1 3116 Humboldt 3.3 mi. N of Trinidad on US 101 Comment
  HSC14972  Medicago polymorpha Francis Winter 1960-4-23 Humboldt 4 mi. N of Dollar Ranch, on Korbel-Maple Creek Rd. 244 Comment
  HSC61766  Medicago sativa Ruby Van Deventer 1963-7-1 Humboldt Along Klamath River at Pecwan Comment
  BLMAR216  Melica aristata Jennifer Anthony-Wheeler 1996-7-9 216 Humboldt Pilot ridge., drwng in dry open area under coniferous forest 1341 Comment
  UC573657  Melica geyeri H. S. Yates 1936-6-17 5693 Humboldt lower nw slope Buck Mtn. 792 Comment
  BLMAR525  Melica harfordii Jennifer Wheeler 2009-6-23 525 Humboldt King range, On King Peak road Comment
  HSC101165  Melica harfordii Dana York, Kim Hayler 2012-5-18 3105 Humboldt Six Rivers National Forest, near Somes Bar, 585 meters SE of the confluence of the Klamath and Salmon Rivers, E and above Hwy. 96. 213 Comment
  POM126121  Melica harfordii Joseph P. Tracy 1923-5-30 6243 Humboldt Dyerville, along Eel River from South Fork to Scotia. 61 Comment
  HSC102218  Melica subulata M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 1134 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  UCD88616  Melica subulata August L. Hormay 1932-5-11 s.n. Humboldt Korbel. Comment
  UCD88641  Melica subulata A. H. Murphy 1950-5-5 s.n. Humboldt Bald Hills Rd., about 3 mi. east Orich. Comment
  HSC14998  Melilotus albus D. K. Smith 1968-2-2 5 Humboldt On the bank of Crannell Rd. past the bridge Comment
  HSC15521  Melilotus indicus M. J. Athey 1970-10-12 11 Humboldt Along the old road to Trinidad Comment
  UC1225832  Mentha aquatica Joseph P. Tracy 1947-11-9 17945 Humboldt Ferndale 9 Comment
  RSA21020  Mentha canadensis Carl B. Wolf 1937-9-12 9320 Humboldt Big Lagoon, south side along Redwood Hwy 6 Comment
  CDA5714  Mentha pulegium D. G. Kelch 2007-7-25 7 .502 Humboldt Along Hwy 299 between Lord-Ellis Summit and Hwy 96. Comment
  HSC90755  Mentha pulegium Gail Newton 1983-8-21 3856 Humboldt Elk River Wildlife Area, Eureka. Comment
  HSC12719  Mentha pulegium C. E. Fellows 1970-10-31 377 Humboldt Rio Dell, bank of Eel River, 1/2 mi. E of bridge on N side of town Comment
  HSC36045  Mentha pulegium Thomas W. Nelson 1975-9-24 2200 Humboldt Beside Indianola Rd., ca. 1/2 mi. E of its junction with Hwy. 101 Comment
  HSC81704  Mentha pulegium Thomas W. Nelson, Jane P. Nelson 1980-8-12 6236 Humboldt Logging roads S of Lundbar Hills 61 Comment
  RSA167435  Mentha spicata Joseph P. Tracy 1950-9-22 19370 Humboldt Klamath River near Slate Creek; below Orleans 8 miles. 122 Comment
  UC1199341  Micropus californicus var. californicus Joseph P. Tracy 1925-5-31 7052 Humboldt Bridgeville Northern Coast Ranges 228 Comment
  UC891844  Microseris borealis Milo S. Baker 1927-8-21 24886 Humboldt bog near Bald Mt. 914 Comment
  UC129386  Microseris laciniata subsp. leptosepala J. Burtt Davy 1899-6-22 5864 Humboldt Trinity Summit North Coast Ranges, Trinity Summit Comment
  HSC17124  Microsteris gracilis D. E. Anderson 1963-5-19 2460 Humboldt Barry Rd., 1/2 mi. W of Kneeland school Comment
  HSC98617  Microsteris gracilis Cara Witte 2007-5-23 111 Humboldt Grouse Mountain Lookout. Forest Service Road 4N70. 1635 Comment
  HSC20645  Mimulus aurantiacus var. aurantiacus Paul Shields 1955-6-12 Humboldt 6 mi. W of Myers Flat Comment
  JEPS15187  Mimulus aurantiacus var. aurantiacus G. T. Nordstrom July 1937 1437 Humboldt 1 1/2 mi sw Orick; Orick Quadrangle Comment
  POM267769  Mimulus aurantiacus var. aurantiacus Lyman Benson 1928-7-9 412 Humboldt Weott Ranger Station, Seaward N Coast mt. range, S Fork Eel River watershed 61 Comment
  UC902229  Mimulus aurantiacus var. aurantiacus Joseph P. Tracy 1947-5-24 17691 Humboldt Devil's Canyon Big Lagoon 152 Comment
  HSC55989  Mimulus breweri Overton, Butler 1979-7-31 11404 Humboldt Near Water Dog Lakes, close to the town of Hoopa 1830 Comment
  JEPS28968  Mimulus breweri Joseph T. Gregory 1935-7-28 792 Humboldt head Devil's Hole; Trinity Summit 1828 Comment
  UC1299218  Mimulus cardinalis Freed W. Hoffman 1949-7-15 3011 Humboldt a little s Blue Ridge (bottom of Mule Slide); North Coast Ranges, Mt. Lassic area Comment
  RSA80079  Mimulus dentatus F. W. Peirson 1926-7-13 7055 Humboldt On south side of Mad River, near Blue Lake. Comment
  HSC97545  Mimulus guttatus Ivy Watson 2008-9-28 31 Humboldt Beach N of river mouth, along small tributary E of sand dunes 4 Comment
  HSC95361  Mimulus guttatus Andrea Pickart 2002-8-7 198 Humboldt Arcata Bottoms; Along Lanphere Rd. 0 Comment
  JEPS10789  Mimulus inodorus Joseph P. Tracy Jul 16 1930-Jul 19 1930 8983 Humboldt McKay Camp Northern Coast Ranges, South Fork Mountain 1676 Comment
  UC147880  Mimulus inodorus Joseph P. Tracy 1908-6 2697 Humboldt opposite Buck Mountain; Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  UC582480  Mimulus inodorus Joseph P. Tracy 1923-9-16 6551 Humboldt near South Fork; Trinity River Valley 182 Comment
  HSC56068  Mimulus moschatus G. L. Clifton, Griswold 1979-7-31 11734 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa. 1845 Comment
  UC1173697  Mimulus pilosus Joseph P. Tracy 1939-9-24 16502 Humboldt near Blue Lake; Mad River 15 Comment
  HSC75461  Mimulus primuloides J. O. Sawyer 1980-7-18 3610 Humboldt North Trinity Mountain Research Natural Area, north of Mill Creek Lake to Red Cap Hole. Comment
  SEINET202012  Minuartia cismontana J. P. Tracy 1948-6-13 18055 Humboldt Ridge top near Harris 914 Comment
  UC229832  Minuartia cismontana Joseph P. Tracy 1921-5-30 5479 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  CAS-BOT-BC432905  Mitella Elizabeth Parsons Hawver 1915-6-1 s.n. Humboldt Carlotta Comment
  CHSC115049  Mitella caulescens Stephanie Puentes 2008-6-19 09120 Humboldt 1.5 miles west of Lake Prairie on the southwest facing bank of Maple Creek. 670 Comment
  CHSC98379  Mitella caulescens Dean Wm. Taylor 2004-6-24 19138 Humboldt Head of Madden Creek, Ammon Ridge, seepage area along Forest Road 5N15 0.4 miles west of the junction with Forest Road 5N01. 1356 Comment
  CAS-BOT-BC48149  Mitella caulescens Volney Rattan 1882-6-1 s.n. Humboldt Coast Mts. North of San Francisco Bay - Near Boulder Cr. Comment
  HSC41896  Mitella ovalis M. A. Baker 1977-4-23 175 Humboldt 2.5 mi. S of Shelter Cove Rd., S Fork of Bear Creek at Wailaki Campground 561 Comment
  UC154084  Mitella ovalis J. P. Tracy 1901-6-10 1133 Humboldt Immediate vicinity of Eureka 0 Comment
  UC545828  Mitella ovalis Victor Duran 1933-5-11 3404 Humboldt 6 mi w Bridgeville; Van Duzen River Comment
  HSC16011  Modiola caroliniana J. P. Tracy 1940-10-18 16777 Humboldt Trinidad 3 Comment
  HSC36497  Moehringia macrophylla Thomas W. Nelson, Jane P. Nelson, James Nelson 1975-6-14 1894 Humboldt Beside branch off FS 2S08 to Pine Mtn. 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
  HSC73710  Moehringia macrophylla M. A. Baker 1980-7-15 2979 Humboldt Near Whiting Ridge 301 Comment
  HSC97645  Moehringia macrophylla C. Witte 2007-5-17 27 Humboldt Horse Mountain Botanical Area. Forest Service Road 6N18. Near utility towers. 1483 Comment
  HSC48699  Monardella odoratissima subsp. pallida Brad Klipfel 1973-7-31 239 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  RSA0022793  Monardella villosa subsp. subserrata C. Epling, Wm. Robinson 1935-7-24 s.n. Humboldt Dyerville. Comment
  UC479138  Monardella villosa subsp. villosa Marcus E. Jones, A. M. 1931-7-16 28821 Humboldt Junction, East of Arcata 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
  BLMAR589  Monardella villosa subsp. villosa Jennifer Wheeler 2010-7-13 589 Humboldt King range, Panther Gap Road 792 Comment
  UC1223246  Montia diffusa Joseph P. Tracy 1950-5-7 18652 Humboldt road to South Yager Valley is 5 mi n of Bridgeville (Valley of South Yager Creek); Valley of South Yager Creek 762 Comment
  CAS-BOT-BC444830  Montia fontana Doris K. Kildale 1927-7-22 3922 Humboldt Lassecks Peaks - Corral Camp 1661 Comment
  HSC32090  Montia linearis D. E. Anderson, T. Nelson, S. Dowty 1972-6-17 5708 Humboldt McKeown Ranch, N of Dinsmore Comment
  CAS-BOT-BC445164  Montia parvifolia L. R. Abrams 1918-6-16 7202 Humboldt Willow Creek Comment
  POM203679  Montia parvifolia I. L. Wiggins 1932-7-7 5879 Humboldt Sand dunes near Samoa Comment
  CAS-BOT-BC260574  Muhlenbergia filiformis Joseph P. Tracy 1932-7-14 10544 Humboldt Klamath Mountains. At Corral Prairie 1524 Comment
  HSC10393  Muhlenbergia filiformis J. P. Tracy 1930-7-16 8920 Humboldt Near McKay Camp. 1677 Comment
  HSC10395  Muhlenbergia filiformis H. E. Parks, J. P. Tracy 1934-6-27 11083 Humboldt Grouse Mtn. Comment
  UC1222233  Myosotis discolor Joseph P. Tracy 1942-6-15 17116 Humboldt Englewood Prairie Comment
  UC552838  Myosotis discolor Joseph P. Tracy 1935-5-25 13847 Humboldt Fort Seward North Coast Ranges, Fort Seward 106 Comment
  HSC103302  Myosotis latifolia Michael G. Simpson, Michael Mesler, Michael Mayer 2008-5-28 3016 Humboldt Above College Cove (north of Trinidad State Beach); along path to beach. 61 Comment
  HSC69535  Myosotis sylvatica R. Kalal 1979-5-20 73 Humboldt Logging road E of HSU campus, Arcata 58 Comment
  UC1585367  Myrica californica R. Raiche, K. Zadnik, and H. Forbes 1989-10-2 UCBG 18 Humboldt W. of Eureka 0.5 km. S. of Hwy. 255 on New Navy Base Rd., on North spit of Samoa Peninsula. Comment
  HSC12027  Nasturtium officinale D. Santana 1970-11-2 106 Humboldt E side of old Hwy. 1 in ditch Comment
  HSC57199  Navarretia capillaris Griswold, Butler 1979-7-10 7101 Humboldt Near Board Camp Mtn., close to the town of Willow Creek. 1350 Comment
  UC908377  Navarretia divaricata Joseph P. Tracy 1932-7-17 10681 Humboldt ridges e Corral Prairie; Trinity Summit 1828 Comment
  RSA15549  Navarretia mellita C. B. Wolf 1927-8-30 1250 Humboldt 3 miles S of Thorn3 miles S of Tom's Place Comment
  UC908640  Navarretia mellita Joseph P. Tracy 1934-7-9 13333 Humboldt 5 mi s Harris 762 Comment
  UC1222707  Navarretia pubescens Joseph P. Tracy 1950-6-23 18861 Humboldt 3 mi ne Alder Point; Dobbyn Creek 213 Comment
  HSC17146  Navarretia squarrosa S. V. Thompson 1967-7-24 22 Humboldt Near Boulder Creek Comment
  UC1245393  Nemophila parviflora Joseph T. Gregory 1933-7-11 364 Humboldt nr Clear Lake (Grouse Mt.); nr Clear Lake, Grouse Mt. 1524 Comment
  UC1103812  Nemophila pedunculata Joseph P. Tracy 1923-2-25 6147 Humboldt Cummings Creek Northern Coast Ranges, , at Cummings Creek (Carlotta) 60 Comment
  HSC64816  Noccaea fendleri subsp. glauca J. P. Smith, J. O. Sawyer 1976-5-2 8632 Humboldt Redwood Creek-Hoopa Rd., 0.6 mi. W of its junction with Loop Rd. in Hoopa Reservation 122 Comment
  HSC69696  Nuphar polysepala R. Kalal 1980-6-1 10 Humboldt Essex Pond 15 Comment
  UC217655  Nuttallanthus texanus J. P. Tracy 1904-7-4 2117 Humboldt immediate vicinity of Eureka 0 Comment
  HSC31804  Oemleria cerasiformis Steve Selva, Roger Jensen 1974-8-28 93 Humboldt Humboldt State University Freshwater Forest Comment
  HSC38335  Oenanthe sarmentosa Peter Sorensen 1976-8-11 Humboldt King Salmon Comment
  JEPS14167  Oenanthe sarmentosa Lincoln Constance 1934-6-18 893 Humboldt border of N. Dyerville Flat (near S. Fork R.R. Station & P.O.); Bull Creek Region, S. Fork Eel R., N. Dyerville Flat Comment
  UC642332  Oenanthe sarmentosa Joseph P. Tracy 1927-9-25 8376 Humboldt at Eureka Eureka 6 Comment
  UC673043  Oenanthe sarmentosa Joseph P. Tracy 1940-8-25 16713 Humboldt near High Prairie Bald Mt. 1005 Comment
  CAS-BOT-BC171605  Oenothera wolfii L. R. Abrams 1918-6-16 7168 Humboldt Willow Creek Comment
  CAS-BOT-BC499671  Orobanche californica subsp. californica Ira L. Wiggins 1932-7-19 5894 Humboldt Near the beach at south end of Big Lagoon Comment
  RSA0070495  Orobanche californica subsp. californica Edward Lee 1934-8-17 1152 Humboldt East shore of Big Lagoon, 35 miles north of Eureka. 3 Comment
  HSC100380  Orobanche uniflora J. McRae 2010-6-23 Humboldt Swim Ridge (Black Rock Mountain West), off Ruth Rd. (CR 504) and F.S. Rd. 27N02. 1329 Comment
  HSC62992  Orobanche uniflora David Wheeler 1979-5-24 153 Humboldt Gray's Falls above the Trinity River. Comment
  HSC54894  Orthilia secunda G. L. Clifton, Griswold 1979-7-25 10935 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1784 Comment
  HSC56040  Orthocarpus imbricatus G. L. Clifton, Terry Griswold 1979-7-31 11605 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1719 Comment
  POM299483  Orthocarpus pusillus C. C. Harris, S. K. Harris 1942-6-18 1283 Humboldt 1 mile north and 3 miles west of Chalk Mountain. 665 Comment
  HSC55308  Osmorhiza berteroi Terry Griswold, Butler 1979-7-11 6915 Humboldt Near Snow Camp Mountain 1320 Comment
  HSC73578  Osmorhiza berteroi M. A. Baker 1980-7-19 3012 Humboldt Near Bret Hole. 1814 Comment
  JEPS14255  Osmorhiza berteroi Joseph P. Tracy 1932-7-12 10450 Humboldt near Corral Prairie; Trinity Summit 1584 Comment
  HSC98819  Osmorhiza occidentalis Cara Witte 2008-7-1 790 Humboldt Forest Service Road 4N32. .5 miles east of intersection with 5N04 and 4N32E. 1508 Comment
  HSC21585  Osmorhiza purpurea T. W. Beck 1963-5-10 49 Humboldt Camp Bauer, Korbel Comment
  HSC16728  Oxalis articulata subsp. rubra W. F. Nickel 1965-5-15 Humboldt 1/4 mi. E of Arcata on Rd. to Arcata Reservoir, near Jolly Giant parking lot. Comment
  CSUSB849  Oxalis oregana Keith Thompson 1972-3-27 Humboldt Maple Cr. 853 Comment
  UC726372  Oxalis oregana A. A. Heller 1923-7-8 13770 Humboldt near Pepperwood Comment
  SEINET3347650 Image available Oxalis oregana Joseph P. Tracy 1918-5-28 4940 Humboldt High Prairie Creek, east of Bald Mt. Comment
  HSC16715  Oxalis pes-caprae W. F. Nickel 1965-5-15 Humboldt W side of College Elementary School, H.S.C. Campus Comment
  HSC99469  Oxalis trilliifolia K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-14 123 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  UC1103428  Oxalis trilliifolia Joseph P. Tracy 1932-7-15 10584 Humboldt ridges e Corral Prairie (Trinity Summit); Klamath Mtns 1828 Comment
  UC1196179  Paeonia brownii Joseph P. Tracy 1913-6-16 4146 Humboldt opposite Buck Mountain; Northern Coast Ranges, valley of Van Duzen River, Dinsmore's 762 Comment
  UC1145145  Panicum acuminatum var. acuminatum Joseph P. Tracy 1918-7-5 5014 Humboldt White Thorn Valley Northern Coast Ranges, White Thorn Valley 304 Comment
  SEINET10859947  Panicum bulbosum Joseph P. Tracy 1912-10-20 Tracy 4009 Humboldt Alton. Dried-up slough-bed. Comment
  UC594151  Parapholis incurva S. K. Harris, J. P. Tracy 1936-6-6 3218 Humboldt Eureka, near railroad station Comment
  HSC30825  Parapholis strigosa J. P. Smith, Dennis Anderson 1971-6-14 - 1051 Humboldt At foot of G St., Arcata. Comment
  JEPS103920  Parentucellia viscosa T. I. and F. M. Chuang 1991-7-7 7865 Humboldt Ca 7 mi S of Orick. Comment
  SEINET10810981  Parentucellia viscosa J. Richard Abbott, B. S. Carlsward 1999-7-7 Abbott 13017 Humboldt North of McKinleyville on U.S. 101 (a few kilometers north of Eureka), on northbound off-ramp (southbound labelled as Route 101 Business) leading to Clam Beach County Park. Comment
  UCSB25613  Parnassia palustris Tracy, Joseph 1934-8-29 Humboldt South Fork Mountain, McKay Camp 1676 Comment
  HSC37801  Paspalum dilatatum J. P. Smith 1976-8-22 8962 Humboldt Hwy. 101 just S of exit to Murray field. Comment
  UC1103769  Paspalum dilatatum Fred M. Kay 1929-10-1 Humboldt near Blocksburg 457 Comment
  POM126123  Paspalum distichum Joseph P. Tracy, H. E. Parks 1924-8-3 6779 Humboldt Big Lagoon 6 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
  UC902126  Paxistima myrsinites Joseph P. Tracy 1942-6-23 17246 Humboldt 2 mi. e. Box Camp; Trinity Summit 1524 Comment
  UC1222231  Pectocarya pusilla Joseph P. Tracy 1948-5-31 18003 Humboldt ca 1/2 mi w Harris (up hill toward Spruce Grove) 762 Comment
  HSC104037  Pedicularis densiflora C. Reynolds 2015-3-21 23 Humboldt Willow Creek; at the entrance to Camp Kimtu 159 Comment
  UC582555  Pedicularis groenlandica Joseph P. Tracy 1932-7-16 10639 Humboldt Corral Prairie; Trinity Summit 1584 Comment
  CAS-BOT-BC69341  Pellaea brachyptera Joseph P. Tracy 1939-8-16 16423 Humboldt Grouse Mountain 1524 Comment
  UCR209002  Pellaea mucronata Thomas W. Nelson, James Nelson 1976-5-30 2612 Humboldt North Coast Range, McKeowan Ranch north of Dinsmore Comment
  HSC74472  Penstemon anguineus Gail Newton 1980-7-23 1742 Humboldt Near Packsaddle Ridge 1463 Comment
  HSC99467  Penstemon anguineus K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-14 121 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  UC1222463  Penstemon anguineus Joseph P. Tracy 1947-7-5 17817 Humboldt near Box Camp (Trinity Summit); , near Box Camp 1524 Comment
  UC577405  Penstemon anguineus Joseph P. Tracy 1936-8-8 15130 Humboldt on ridge 2 mi e Grove's Prairie; Trinity Summit, e of Grove's Prairie 1524 Comment
  HSC56129  Penstemon deustus G. L. Clifton, Terry Griswold 1979-8-1 11938 Humboldt Near Mill Creek Lakes, close to the town of Hoopa. 1692 Comment
  UC1222461  Penstemon heterophyllus Joseph P. Tracy 1936-6-17 14973 Humboldt at crossing of highway below Larrabee Valley (Little Van Duzen River); , below Larrabee Valley 713 Comment
  JEPS7562  Penstemon heterophyllus var. heterophyllus Joseph P. Tracy 1933-6-25 12616 Humboldt 2 to 5 mi e South Fork (Camp Grant, along Eel River); along Eel River 45 Comment
  UC577366  Penstemon heterophyllus var. heterophyllus Joseph P. Tracy 1933-6-25 12616 Humboldt along Eel River 2 to 5 mi e South Fork Eel River (Camp Grant); along Eel River, e of South Fork 45 Comment
  UC1222426  Penstemon laetus var. sagittatus Joseph P. Tracy 1926-6-20 7645 Humboldt Horse Mountain 1432 Comment
  UC585632  Penstemon laetus var. sagittatus Joseph P. Tracy 1937-7-24 15512 Humboldt 2 mi se Devil's Hole; Trinity Summit, se of Devil's Hole 1584 Comment
  NY627429  Penstemon newberryi var. berryi J. P. Tracy 1930-7-16 8953 Humboldt South Fork Mountain: along summit near Blake lookout 1706.9 Comment
  UC774991  Penstemon parvulus Carl B. Wolf 1937-8-13 9220 Humboldt on new road towards Trinity Summit 8 mi e Hoopa Valley; North Coast Range 1219 Comment
  SEINET5329314 Image available Penstemon rattanii J. Tracy 1906-6-10 2480 Humboldt Kneeland Prairie 762 Comment
  CHSC57403  Pentagramma triangularis subsp. triangularis L. P. Janeway 1984-5-6 757 Humboldt Above Ishi Pishi Road, 1/2 mi northeast of Orleans. 137 Comment
  SEINET200760  Perideridia gairdneri Joseph P. Tracy 1948-9-5 18167 Humboldt Happy Camp Mountain. In Trinity Summit Range 6 miles NE of Hawkins Bar. 1280 Comment
  HSC102170  Perideridia oregana M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-3 1082 Humboldt Patterson Meadows 1555 Comment
  HSC35616  Perideridia oregana Thomas W. Nelson, B. Reinhardt 1975-7-30 2113 Humboldt E of Pilot Rock Comment
  HSC98753  Perideridia oregana Cara Witte 2007-7-27 601 Humboldt National Forest 1. 1.5 miles southeast of Forest Service Road 5N09. 1560 Comment
  UC1197118  Perideridia parishii subsp. latifolia Joseph P. Tracy 1932-7-18 10707 Humboldt Brett Hole Trinity Summit (head) 1828 Comment
  UCD99742  Persicaria maculosa James Payne Smith Jr.; Advanced Plant Taxonomy Class 1971-10-6 4950 Humboldt End of Murray Road in McKinleyville. Comment
  HSC97674  Petasites frigidus var. palmatus Gordon Leppig 1998-3-9 711 Humboldt Arcata, West End Rd., 3 mi. W of Ericson Way 30 Comment
  UC129570  Petasites frigidus var. palmatus Mrs. M. H. Manning 1900-1 Humboldt near Hupa Comment
  UCR13417  Petasites palmatus T. Wetherwax 1973-4-1 730401- 2 Humboldt Old U.S. Hwy 101, just north of Myer's Flat. 152 Comment
  POM160824  Petasites palmatus Joseph P. Tracy 1926-2-28 7377 Humboldt Trinity River Valley, near the S Fork. 183 Comment
  UC666549  Phacelia bolanderi G. L. Stebbins Jr. 1942-6-1 3275 Humboldt along river 2 mi n Orleans; Klamath River Comment
  HSC44535  Phacelia mutabilis Brad Klipfel 1973-7-1 143 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC57855  Phacelia mutabilis G. L. Clifton 1979-7-31 11371 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  RSA10051  Phalaris californica Joseph P. Tracy 1925-6-7 7085 Humboldt On Lord Ellis Road, on Bald Mountain 610 Comment
  CAS-BOT-BC76563  Philadelphus lewisii Harley P. Chandler 1901-6-1 1333 Humboldt Hupa Indian Reservation 152 Comment
  HSC98094  Philadelphus lewisii Cara Witte 2007-7-11 484 Humboldt Cold Spring. 1/2 mile south of Titlow Hill. 1396 Comment
  JEPS49622  Philadelphus lewisii Harley P. Chandler June, 1901 1333 Humboldt Campbell Creek North Coast Ranges, Hupa Indian Reservation 152 Comment
  LA97948  Philadelphus lewisii Jane Turner; Francis M. Ball 1962-7-10 SK&F- 1145 Humboldt East Fork Willow Creek Forest Camp, Six Rivers National Forest, highway 299 ca. 5 mi. W of Willow Creek 457 Comment
  UC1127362  Philadelphus lewisii R. Stahelin 1933-7-18 Humboldt Korbel near Riverside Plant. Korbel, 7.5 Q. Comment
  RSA0046048  Philadelphus lewisii Marcus E. Jones 1931-7-16 s.n. Humboldt Junction, East of Arcata. Comment
  HSC74182  Phleum alpinum M. A. Baker 1980-7-22 3105 Humboldt Near Grogan Hole. 1676 Comment
  UCD89305  Phleum alpinum Don Hagar 1957-8-6 s.n. Humboldt Jackson Hole, west slope of the Trinity Summit area. 1645 Comment
  HSC58537  Phleum pratense Overton, Butler 1979-7-23 9461 Humboldt Near Horse Mountain Mine, close to the town of Willow Creek 1295 Comment
  HSC55663  Phlox adsurgens Overton, Butler 1979-7-25 9821 Humboldt Near Ammon Creek, close to the town of Willow Creek. 671 Comment
  RSA167445  Phlox adsurgens Joseph P. Tracy 1950-7-2 18965 Humboldt Happy Camp Mountain (in Trinity Summit Range, 6 miles NE of Hawkins Bar.) 1280 Comment
  UC1191119  Phlox adsurgens Joseph P. Tracy 1925-6-7 7058 Humboldt Willow Creek Canyon Northern Coast Ranges 609 Comment
  UC906692  Phlox gracilis Joseph P. Tracy 1942-6-23 17403 Humboldt near Box Camp; Trinity Summit 1524 Comment
  HSC81777  Phoenicaulis cheiranthoides Thomas W. Nelson, James Nelson 1980-6-10 5403 Humboldt Along Swayback Ridge 4-wheel drive road, 2.5 mi. N of junction with FS Rd. 1S07 1463 Comment
  SEINET6630811  Phoradendron villosum J. R. Bruff 1937-3-19 802 Humboldt Oak Flat Camp- Ridge Route Comment
  JEPS386  Phyllospadix torreyi Joseph P. Tracy 1938-9-9 16146 Humboldt Trinidad Comment
  CAS-BOT-BC140583  Physocarpus capitatus L. R. Abrams 1918-6-15 7129 Humboldt Brannan Mt near Willow Creek Comment
  CAS-BOT-BC73448  Picea sitchensis Ira L. Wiggins 1932-6-18 5870 Humboldt Hillside just north of mouth of Little River. Comment
  NY34413  Picea sitchensis E. Fritz 1935-8-16 8154 Humboldt Comment
  UC137  Picea sitchensis J. P. Tracy 1901-4-17 Humboldt Samoa; Humboldt Bay Comment
  CAS-BOT-BC78373  Pinus contorta H. E. Parks 1931-5-1 s.n. Humboldt Samoa, Pine Barrens Comment
  UC573158  Pinus contorta subsp. contorta H. S. Yates 1936-6-16 5660 Humboldt 1 mi sw Samoa 6 Comment
  HSC40304  Pinus contorta var. contorta Linda M. Barker 1976-7-5 1641 Humboldt 3 mi. W of Arcata. 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
  UC650336  Pinus monticola Charles H. Bunting 1940-8-12 56 Humboldt n of, n slope of Bee Mountain Weitchpec; Bee Mountain 1082 Comment
  UC1600428  Pinus ponderosa Mrs. M. H. Manning 1900-1-1 Humboldt near Hupa Comment
  UC4590  Piperia candida Harley P. Chandler Jun 1901 1385 Humboldt Hupa Indian Reservation North Coast Ranges 304 Comment
  CAS-BOT-BC158324  Piperia multiflora J. D. Ackerman 1974-8-13 407 Humboldt Field redacted by CAS, contact the data manager for more information Comment
  BLMAR587  Piperia unalascensis Jennifer Wheeler 2010-7-13 587 Humboldt King range, along Panther Gap Road 792 Comment
  HSC98111  Piperia unalascensis Cara Witte 2007-6-26 356 Humboldt Horse Mountain Botanical Area. Forest Service Road 6N36A. 1348 Comment
  UC615024  Piperia unalascensis Beryl O. Schreiber 1934-6-6 1146 Humboldt 5 mi e Gray's Resort (road to Redding); Redwood Creek Comment
  CAS-BOT-BC169838  Plagiobothrys Volney Rattan 1882-6-1 s.n. Humboldt unspecified Comment
  POM174072  Plagiobothrys bracteatus Joseph P. Tracy 1918-7-5 5010 Humboldt White Thorn Valley. 305 Comment
  UC1239572  Plagiobothrys reticulatus Joseph P. Tracy 1932-5-1 9884 Humboldt Garberville Northern Coast Ranges, Garberville 121 Comment
  JEPS60969  Plagiobothrys reticulatus var. reticulatus Joseph P. Tracy 1904-7-4 2111 Humboldt Eureka Northern Coast Region 0 Comment
  HSC40868  Plantago erecta Linda M. Barker 1976-4-30 1397 Humboldt 3 mi. W of Arcata Comment
  HSC104158  Plantago erecta Andrea Pickart 2002-4-3 35 Humboldt Samoa Dunes, Eureka airport. 15 Comment
  HSC38396  Plantago erecta J. D. Ackerman 1975-6-10 459 Humboldt 1 mi. N of Samoa Blvd. and Samoa Bridge Rd., S of Manila near RR tracks, along Humboldt Bay Comment
  JEPS85907  Plantago lanceolata Lincoln Constance 1934-5-27 700 Humboldt s end Dyerville Bridge (on South Fork Eel River); South Fork Eel River, Bull Creek Region 45 Comment
  UC28010  Plantago lanceolata J. Burtt Davy 1899-6-16 5553 Humboldt near Scotia; North Coast Ranges Comment
  OBI11636  Plantago major Joseph P. Tracy 1942-7-25 17300 Humboldt Fickle Hill, 6 mi SE of Arcata Comment
  RSA15562  Plantago maritima Carl B. Wolf 1927-8-29 1210 Humboldt Devils' Gate, S of Cape Mendocino Comment
  HSC16857  Plantago maritima C. E. Fellows 1965-5-17 79 Humboldt Luffenholtz Beach County Park Comment
  UC162682  Plantago maritima var. juncoides Joseph P. Tracy 1911-6-25 3254 Humboldt Bucksport Northern Coast Region, Humboldt Bay Region 0 Comment
  UC429188  Platanthera Franklin P. Nutting Humboldt Bridge Creek, n California Bridge Creek Comment
  HSC54017  Platanthera dilatata var. leucostachys Griswold, Butler 1979-7-12 7161 Humboldt Near Groves Prairie, close to the town of Willow Creek. 1256 Comment
  HSC54595  Platanthera dilatata var. leucostachys Overton, Butler 1979-7-24 9669 Humboldt Near Friday Camp, close to the town of Willow Creek. 1250 Comment
  RSA20791  Platanthera leucostachys Carl B. Wolf 1937-8-13 9256 Humboldt North Coast Range, 11 miles E of Hoopa Valley on new road towards Trinity Summit. 1524 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
  JEPS4808  Plectritis brachystemon Joseph P. Tracy 1930-6-8 8734 Humboldt Kneeland Prairie 762 Comment
  UC169004  Plectritis brachystemon Joseph P. Tracy 1911-7-7 3381 1/2 Humboldt 3 mi nw of junction of Willow Creek with Trinity River (near Beebe's Ranch); Northern Coast Ranges 914 Comment
  UC169005  Plectritis brachystemon Joseph P. Tracy 1911-7-7 3381 Humboldt 3 mi nw of junction of Willow Creek with Trinity River (and near Beebe's Ranch); Northern Coast Ranges 914 Comment
  UC169077  Plectritis brachystemon Harley P. Chandler May, 1901 1149 B Humboldt North Coast Ranges, Humboldt Bay Humboldt Bay; North Coast Ranges, Humboldt Bay 3 Comment
  UC169079  Plectritis brachystemon Harley P. Chandler 1901-6-6 1414 Humboldt North Coast Ranges, Klamath River, Saint's Rest, (Nature's Rest) Nature's Rest; North Coast Ranges, Klamath River, Saint's Rest 304 Comment
  UC1239606  Plectritis congesta Joseph P. Tracy 1923-5-20 6216 Humboldt Kneeland Prairie 762 Comment
  UCD137534  Plectritis congesta R. N. Raynor 1935-1 s.n. Humboldt Exact location unknown. Comment
  HSC77949  Plectritis congesta subsp. brachystemon Jimerson, Imper 1982-5-17 1439 Humboldt Near Ashfield Ridge. 822 Comment
  UCSC000724  Plectritis congesta var. congesta S. C. Dyal 1938-6-11 651 Humboldt Moist places beside road east of Eureka Comment
  HSC97358  Pleuricospora fimbriolata Rudolf W. Becking 1972-6-30 Humboldt Fish Lake area, Orleans. Bulk Collection 31 762 Comment
  SEINET6652845 Image available Pleuricospora fimbriolata Joseph P. Tracy 1925-1 7184 A Humboldt Northern Coast Ranges: High Prairie on Bald Mountain 1067 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
  SEINET200751  Pneumonanthe setigera Joseph P. Tracy 1919-9-22 5274 Humboldt Trinity Summit 1829 Comment
  HSC10626  Poa annua William J. Ferlatte 1963-5-8 39 Humboldt Near 11th and B Sts., Arcata. Comment
  HSC23046  Poa annua D. E. Anderson 1970-5-21 Humboldt Scotia Bluffs, across the river from Rio Dell-Scotia. Comment
  UCD90242  Poa annua Linda M. Barker 1976-4-30 1399 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  CAS-BOT-BC254715  Poa bolanderi Joseph P. Tracy 1930-7-16 8902 Humboldt South Fork Mountain: near McKay Camp 1676 Comment
  UCD90580  Poa bolanderi A. H. Murphy 1951-8-17 90 Humboldt near Cold Spring Lookout, South Fork Mtn., ca. 15 miles northeast of Bridgeville. Near Trinity County line. 1219 Comment
  UC1103189  Poa bulbosa Joseph P. Tracy 1938-7-4 15988 Humboldt Valley of S Yager Creek 762 Comment
  UCD90834  Poa compressa Les Berry 1956-6-20 s.n. Humboldt Coyote Flat, Ft. Baker Ranch, east of Bridgeville. 914 Comment
  CAS-BOT-BC255117  Poa confinis Peter H. Raven 1963-5-15 18372 Humboldt Dunes above coast, Lanphere Ranch just W of Mad River Slough, near Arcata Comment
  UCD90512  Poa confinis Linda M. Barker 1976-4-30 1412 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  UC1132656  Poa douglasii H. S. Yates 1936-6-16 5650 Humboldt 1/2 mi sw Samoa; Eureka Quadrangle 6 Comment
  CAS-BOT-BC246619  Poa howellii Joseph P. Tracy 1926-5-15 7490 Humboldt Kneeland Prairie 762 Comment
  RSA183517  Poa kelloggii H. S. Logsdon 1964-5-10 7 Humboldt 4.0 miles N.E. of Orick at Boye's Prairie Comment
  CAS-BOT-BC255942  Poa pratensis Ashley C. Browne 1936-6-11 s.n. Humboldt Patrick's Point State Park Comment
  HSC102627  Poa secunda subsp. secunda M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-29 1612 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1579 Comment
  HSC98888  Poa secunda subsp. secunda Cara Witte 2007-6-5 208 Humboldt Along Forest Service Road 4N32. Near Grouse Mountain 1413 Comment
  HSC10807  Poa trivialis R. D. Zortman 1963-5-15 45 Humboldt 5 mi. NE of Arcata, S of the Mad River, off Warren Creek Rd. 91 Comment
  HSC35937  Polygala californica Thomas W. Nelson, Jane P. Nelson, James Nelson 1975-7-15 2030 Humboldt French Camp, Bald Hills. Comment
  UC17437  Polygala californica Harley P. Chandler June 1901 1328 Humboldt Hupa Indian Reservation North Coast Ranges, Hupa Indian Reservation 152 Comment
  UC35075  Polygala cornuta var. cornuta Chesnut and Drew 1888-7-28 Humboldt Grouse Creek Comment
  HSC12591  Polygonum aviculare C. Kline 1970-11-9 64 Humboldt .5 mi. N of Bayside, Bayside Rd. Comment
  POM302977  Polygonum coccineum H. M. Pollard 1942-9-12 s.n. Humboldt Near Orleans. Comment
  HSC100602  Polygonum convolvulus Carl C. Marshall Sep 1886 246 Humboldt Fields near Arcata. Comment
  HSC76039  Polygonum douglasii Overton, Butler 1979-8-2 12577 Humboldt Near Bret Hole, close to the town of Hoopa 1554 Comment
  CAS-BOT-BC414465  Polygonum douglasii Joseph P. Tracy 1932-7-11 10399 Humboldt Trinity Summit. At Corral Prairie 1584 Comment
  UC672962  Polygonum douglasii subsp. douglasii Joseph P. Tracy 1933-8-30 13042 B Humboldt Grouse Mountain 1524 Comment
  UC672949  Polygonum lapathifolium Joseph P. Tracy 1930-10-12 9204 Humboldt Alton to Fortuna (on gravel bars); Eel River 15 Comment
  UC672947  Polygonum minimum Joseph P. Tracy 1932-7-18 10702 Humboldt Brett Hole Trinity Summit (head) 1828 Comment
  CDA22830  Polygonum paronychia J. Riddell 2002-4-19 35 Humboldt Mad River Beach dunes. Comment
  SD39934  Polygonum paronychia Edith A. Purer 1932-7-27 4129 Humboldt Samoa, sand dunes Comment
  UC1198083  Polygonum persicaria Joseph P. Tracy 1919-9-14 5203 Humboldt near Willow Creek; Northern Coast Ranges, Trinity River Valley 152 Comment
  UC667948  Polypodium glycyrrhiza Joseph P. Tracy 1936-4-26 14804 Humboldt Kneeland Prairie 762 Comment
  CAS-BOT-BC76847  Polypodium glycyrrhiza Doris K. Kildale 1928-12-30 6766 Humboldt Pillipsville Comment
  RSA47154  Polypodium glycyrrhiza Doris K. Kildale 1928-12-29 6766 Humboldt Unspecified Comment
  UC197920  Polypodium glycyrrhiza Joseph P. Tracy 1914-6-7 4490 Humboldt N. Fork Eel River; Northern Coast Region 0 Comment
  HSC95649  Polypodium scouleri Andrea Pickart 2002-4-5 40 Humboldt Lanphere Dunes 0 Comment
  CAS-BOT-BC233074  Polypogon interruptus Joseph P. Tracy 1927-7-16 8260 Humboldt Eureka 60 Comment
  CAS-BOT-BC233069  Polypogon interruptus W. A. Silveus 1938-7-9 2961 Humboldt Along road through Redwoods, S of Dyerville Comment
  HSC10844  Polypogon monspeliensis D. E. Anderson 1961-8-25 1743 Humboldt Beach area 1.5 miles S of Trinidad. Comment
  POM295444  Polypogon monspeliensis Lyman Benson 1929-7-16 1825 Humboldt Dyerville Ditch. Comment
  UC1103192  Polypogon monspeliensis Joseph P. Tracy 1930-10-12 9206 Humboldt Eel River on gravel bars Alton to Fortuna; Eel River 15 Comment
  UC1145086  Polypogon monspeliensis Joseph P. Tracy 1938-7-11 16049 Humboldt near Samoa; Humboldt Bay, near Samoa 6 Comment
  SEINET11681498  Polypogon monspeliensis H. P. Chandler 1901-1 1431 Humboldt Klamath River, North Coast Ranges 335 Comment
  UCD91482  Polypogon viridis Joseph P. Tracy 1943-8-29 17445 Humboldt At Eureka. 30 Comment
  HSC72980  Polystichum imbricans Gail Newton 1980-7-15 1578 Humboldt Near Sims Mtn. 1311 Comment
  HSC55089  Polystichum munitum G. L. Clifton, Griswold 1979-7-31 11764 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa. 1845 Comment
  UC1063666  Polystichum munitum H. L. Person 1932-7-10 Humboldt Lindsay Creek; Eureka Quadrangle Comment
  UC906671  Polystichum munitum Joseph P. Tracy 1947-5-24 17688 Humboldt Big Lagoon 12 Comment
  UCD136543  Polystichum munitum Linda M. Barker 1976-4-30 1414 Humboldt Lanphere-Christensen Dunes, 3 miles west of Arcata. Comment
  HSC13046  Polystichum munitum Jana Kattenhorn 1970-10-24 123 Humboldt HSU campus S of Building 52 Comment
  HSC79147  Polystichum munitum C. J. Thomas 1984-9-25 119 Humboldt In Redwood forest immediately behind HSU fieldhouse 79 Comment
  SEINET11722267  Polystichum munitum C. S. Kaut 2000-1 2 Humboldt Trinidad Comment
  SBBG21983  Populus balsamifera subsp. trichocarpa R. F. Thorne 1957-9-2 18990 Humboldt branch of Eel River at Burlington State Park, just S of Weott Comment
  UC1173732  Populus trichocarpa Joseph P. Tracy 1939-4-18 16211 Humboldt on South Fork of Eel River between Miranda and Redway Sylvandale; North Coast Ranges, on South Fork of Eel River 91 Comment
  UC13488  Potamogeton natans W. C. Blasdale 1896-6-3 Humboldt Blue Lake Comment
  SEINET3892866  Potamogeton natans Marla J. Carollo 1979-5-17 086 Humboldt East of Little River Beach State Park, so. of Hwy 101.; 0 Comment
  HSC18720  Potentilla anserina subsp. pacifica Francis Winter 1960-4-30 Humboldt Samoa Peninsula, 6 mi. W of Arcata. Comment
  POM366485  Potentilla anserina var. grandis Glenn A. Gorelick 1967-6-4 s.n. Humboldt Samoa Beach, near Eureka. Marine Sand dunes. Comment
  HSC63880  Potentilla drummondii M. A. Baker 1979-6-27 922 Humboldt Edge of Hoopa Indian Reservation Comment
  HSC34288  Potentilla gracilis K. Irwin 1975-8-16 Humboldt Grogans Hole area. 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
  HSC58327  Potentilla gracilis var. fastigiata Overton, Butler 1979-8-2 12625 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  HSC75470  Potentilla gracilis var. fastigiata J. O. Sawyer 1980-7-18 3617 Humboldt North Trinity Mountain Research Natural Area, north of Mill Creek Lake to Red Cap Hole. Comment
  CAS-BOT-BC158495  Potentilla gracilis var. gracilis Volney Rattan 1878-1-1 s.n. Humboldt Unspecified Comment
  UC585628  Potentilla gracilis var. gracilis Joseph P. Tracy 1933-8-6 12929 Humboldt on Bald Hills e Orick (Tomlinson Ranch); on Bald Hills e of Orick, Tomlinson Ranch 670 Comment
  NY436379  Potentilla laxiflora V. K. Chesnut 1888-7-23 s.n. Humboldt Hy-Am-Pum. Comment
  HSC100560  Prosartes hookeri Carl C. Marshall Apr 1887 392 Humboldt Hoopa Valley. Comment
  HSC57029  Prosartes hookeri Overton, Butler 1979-7-24 9653 Humboldt Near Friday Camp, close to the town of Willow Creek. 1250 Comment
  HSC15473  Prosartes smithii D. E. Anderson 1962-3-31 1959 Humboldt Old Hwy. 101, E side of Freshwater Lagoon Comment
  HSC95735  Prosartes smithii Steven Lee 2004-4-13 20 Humboldt Arcata Community Forest, hillside along Jolly Giant Creek Comment
  HSC15474  Prosartes smithii W. D. Stevens 1964-5-12 11 Humboldt E end of 14th St., Arcata Comment
  SEINET12051380  Prosartes smithii F. H. Utech, Sato, T.; Ohara, M. 1990-1 90 -288 Humboldt Humboldt Redwoods State Park, Jensen Grove 50 Comment
  CDA5736  Prunella vulgaris T. C. Fuller 1958-6-17 596 -58 Humboldt Wildcat Ridge near Bunker Hill. 0 Comment
  HSC48746  Prunus emarginata Brad Klipfel 1973-6-10 83 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  JEPS20480  Pseudognaphalium californicum Joseph P. Tracy 1937-7-11 15415 Humboldt vicinity of Garberville 121 Comment
  UC127827  Pseudognaphalium californicum Joseph Burtt Davy and Walter C. Blasdale 1899-6-26 5890 Humboldt Francis Ridge Comment
  UC1223116  Pseudognaphalium stramineum Joseph P. Tracy 1950-7-15 19044 Humboldt e side Trinity River 1 mi n of mouth of Willow Creek; Trinity River Comment
  UC180193  Pseudognaphalium thermale Joseph P. Tracy 1914-9-6 4622 Humboldt between High Prairie and Snow Camp; Northern Coast Ranges, Bald Mountain 1066 Comment
  HSC70640  Pseudotsuga menziesii var. menziesii R. York 1980-5-18 593 Humboldt Near Black Mtn. 792 Comment
  HSC76289  Pseudotsuga menziesii var. menziesii Teresa Prendusi 1981-7-9 248 Humboldt Near Slate Creek Butte 1122 Comment
  HSC77905  Psilocarphus brevissimus var. brevissimus L. P. Janeway, Paul Wilson 1984-5-25 831 Humboldt N Spit of Humboldt Bay, BLM lands near the Coast Guard Station 5 Comment
  CAS-BOT-BC361928  Psilocarphus tenellus C. V. Piper 1921-5-22 s.n. Humboldt Eureka Comment
  HSC54600  Pteridium aquilinum var. pubescens Walter Overton, Butler 1979-7-24 9682 Humboldt Near Friday camp, close to the town of Willow Creek 1250 Comment
  HSC55195  Pteridium aquilinum var. pubescens G. L. Clifton, Griswold 1979-8-2 12291 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  UCD136174  Pteridium aquilinum var. pubescens K. Esau 1934-5-8 s.n. Humboldt Above Fort Seward. 457 Comment
  CAS-BOT-BC462868  Pyrola asarifolia Volney Rattan 1878-1-1 s.n. Humboldt Unspecified Comment
  SBBG59887  Pyrola asarifolia S. W. Hutchinson -Jun-1927 317 Humboldt Redwood Hwy 304 Comment
  HSC76592  Pyrola crypta Denis Kearns 1981-7-24 449 Humboldt Near Whiteys Peak. 1768 Comment
  UC153965  Pyrola picta Joseph P. Tracy 1909-7-31 3047 Humboldt Kneeland Prairie 762 Comment
  CAS-BOT-BC466037  Pyrola picta L. B. Kildale 1930-9-9 10404 Humboldt Bald Mountain 914 Comment
  UC154161  Pyrola picta Mrs. M. H. Manning 1900-1 Humboldt near Hupa, Bald Hill Comment
  UC56314  Pyrola picta Joseph Burtt Davy 1899-6-19 5644 Humboldt Hoopa Mountain Comment
  UCD47053  Quercus X morehus W. L. J. Jun-5 Jul 1903 2191 Humboldt Van Arsdale Ranch, Halker Valley region. Expedition of W.L. Jepson and W.W. Mott from Ukiah to southern Humboldt Co., via the Blue Rock Ridge and return via Fort Bragg. 457 Comment
  CAS-BOT-BC62631  Quercus chrysolepis Joseph P. Tracy 1931-5-17 9413 Humboldt Trinity River Valley opposite Willow Creek 152 Comment
  CAS-BOT-BC62673  Quercus chrysolepis Doris K. Kildale 1926-3-21 1689 Humboldt McDowell Butte, Kneeland Prairie 914 Comment
  CAS-BOT-BC94306  Quercus garryana Roxana S. Ferris 1955-7-11 12973 Humboldt Summit of US Highway 299 betw. Willow Creek and Blue Lake Comment
  CAS-BOT-BC94309  Quercus garryana Henry M. Pollard 1944-9-1 s.n. Humboldt near Orleans Comment
  HSC97543  Quercus garryana Todd Bouchier, Kathleen Gifford, Cameron Williams 1999-5-3 36 Humboldt 1.0 mi E of Hwy. 96 183 Comment
  HSC8258  Quercus kelloggii R. E. Thill 1965-5-15 30 Humboldt 3 mi W of Berry Summit on Hwy. 299 Comment
  HSC98688  Quercus kelloggii Cara Witte 2008-10-18 1060 Humboldt Horse Mountain Botanical Area. Along Forest Service 6N36. 1248 Comment
  JEPS37758  Quercus kelloggii W. L. Jepson 1903-6 2203 Humboldt Harris Ridge 1127 Comment
  UC1196360  Quercus kelloggii Joseph P. Tracy 1923-11-11 6592 1/2 Humboldt near The South Fork; Northern Coast Ranges, Trinity River Valley 182 Comment
  UCD47250  Quercus sadleriana W. L. Jepson 1902-7-16 2033 Humboldt Ridges and slopes just below summit; Trinity Summit. 1524 Comment
  CAS-BOT-BC104539  Quercus vacciniifolia D. E. Breedlove 1961-7-4 647 Humboldt 7 miles W of Willow Creek on US 299 521 Comment
  SEINET13716691  Ranunculus aquatilis Unknown 1913-6-13 4276 Humboldt In a shallow but permanent pond. Near summit of ridge between Van Duzen and Mad Rivers, on Dinsmore's Ranch. Comment
  HSC37650  Ranunculus aquatilis var. aquatilis Robert M. Specht, John Rehling 1976-4-25 404 Humboldt 12 mi. E of Bridgeville on Hwy. 36, at SE end of Larabee Valley Comment
  UC13971  Ranunculus flabellaris Chesnut and Drew 1888-8-1 Humboldt near Grouse Creek (pond) Comment
  HSC18150  Ranunculus muricatus D. E. Anderson 1963-5-25 2474 Humboldt 10 mi. S of Ferndale on Wildcat Grade Comment
  UC1196232  Ranunculus occidentalis Joseph P. Tracy 1934-6-27 13263 Humboldt Horse Mountain Northern Coast Ranges 1432 Comment
  UC502921  Ranunculus occidentalis Joseph P. Tracy 1932-7-18 10701 Humboldt Brett Hole Klamath Mountains, Trinity Summit (head) 1828 Comment
  UC1196224  Ranunculus occidentalis Joseph P. Tracy 1920-5-18 5327 Humboldt 5 mi above Dyerville; Northern Coast Ranges, South Fork Eel River, Forest Lodge 60 Comment
  POM87678  Ranunculus repens L. R. Abrams, Rimo Bacigalupi 1922-6-25 8276 Humboldt Big Lagoon S of Quick Comment
  HSC34804  Ranunculus repens var. repens Scott M. Kruse 1975-4-9 2 Humboldt HBM Samoa Blvd. and Crescent Way, Arcata 5 Comment
  HSC37430  Ranunculus repens var. repens J. L. Baker 1965-4-10 37 Humboldt 4 mi. N of Arcata on N Bank Rd. Comment
  UC162792  Ranunculus uncinatus J. P. Tracy 1901-5-21 1104 Humboldt Immediate vicinity of Eureka 0 Comment
  RSA34322  Rhamnus californica Doris K. Kildale 1926-8-15 2511 Humboldt Willow Creek Flat Comment
  POM126158  Rhamnus californica subsp. occidentalis Joseph P. Tracy 1921-10-2 5963 Humboldt Kneeland Prairie. Comment
  RSA7816  Rhamnus purshiana Doris K. Kildale 1928-7-1 5304 Humboldt French camp on Orick-Martins ferry road 610 Comment
  UC1121915  Rhamnus purshiana G. T. Nordstrom Jul 1937 1424 Humboldt 2.5 mi ne Orick; Orick Quad. 152 Comment
  UC726369  Rhamnus purshiana A. A. Heller 1923-7-9 13775 Humboldt 5 mi from Arcata (near Blue Lake) Comment
  CAS-BOT-BC58193  Rhododendron columbianum Doris K. Kildale 1926-2-7 1500 Humboldt Big Lagoon. Comment
  CAS-BOT-BC56614  Rhododendron macrophyllum Ella Dales Cantelow 1936-5-17 1235 Humboldt 9 mi. e. of Orick Comment
  CHSC19505  Rhododendron neoglandulosum Norman Dennis 1965-6-3 143 Humboldt Big Lagoon County Park, southwest corner of Big Lagoon. Comment
  UC162760  Rhododendron occidentale Joseph P. Tracy 1911-7-6 3340 Humboldt between Three Creeks and mouth of Willow Creek; Northern Coast Ranges 762 Comment
  UC604616  Rhododendron occidentale Joseph P. Tracy 1938-6-16 15945 Humboldt Trinidad 60 Comment
  UC604660  Rhododendron occidentale Joseph P. Tracy 1938-7-5 16015 Humboldt 4 mi s of Eureka (Spruce Point at junction of Humboldt Hill road with highway); Spruce Point 9 Comment
  SEINET11976085  Rhododendron occidentale H. P. Chandler 1901-1 1448 Humboldt Klamath 457 Comment
  UCSB18968  Rhododendron occidentale Jensen, Karen 1965-4-14 Humboldt Along U.S. Highway 101, 1 km. S of Trinidad 45 Comment
  RSA46883  Rhododendron occidentale var. paludosum Doris K. Kildale 1926-1-3 1485 Humboldt Big Lagoon. Comment
  CAS-BOT-BC433143  Ribes Doris K. Kildale 1927-6-25 3570 Humboldt Shelter Cove Comment
  CAS-BOT-BC433129  Ribes Milo S. Baker 1926-7-26 186 -'26 Humboldt Bridgeville-Red Bluff Highway, S. Fork Mt. 1066 Comment
  BLMAR292  Ribes bracteosum Jeanne McFarland 2001-5-8 292 Humboldt Headwaters Forest Reserve, growing along streambank 335 Comment
  HSC56243  Ribes bracteosum Walter Overton 1979-8-1 12345 Humboldt Near Packsaddle Ridge, close to the town of Hoopa 1341 Comment
  RSA170225  Ribes bracteosum Joseph P. Tracy 1918-5-28 4939 Humboldt High Prairie Creek. 915 Comment
  UC902080  Ribes bracteosum Joseph P. Tracy 1948-9-5 18165 Humboldt ne Hawkin's Bar; Trinity Summit Range, Happy Camp Mountain 1280 Comment
  UC667071  Ribes lacustre Joseph P. Tracy with Dr. F. W. Pennell 1940-7-7 16664 Humboldt Friday Ridge road Grouse Mt. 1371 Comment
  POM237433  Ribes laxiflorum S. T. Parks 1937-6-4 24004 Humboldt Along Prairie Creek at Valley Green Comment
  CDA25540  Ribes lobbii Gordon Leppig 1998-6-1 866 Humboldt Horse Mountain. Buck Flat, Titlow Hill Road at Ammon Ridge Road. Comment
  HSC97215  Ribes marshallii M. Mesler 2007-6-25 765 Humboldt Trail to Mill Creek Lakes 1585 Comment
  CAS-BOT-BC206036  Ribes menziesii Joseph P. Tracy 1948-2-22 17950 Humboldt Hydesville 91 Comment
  HSC47493  Ribes menziesii Sheila Logan 1978-4-9 17 Humboldt Fieldbrook, 0.5 mi. E of McKinleyville on Murray Rd. 122 Comment
  UC1198930  Ribes menziesii Joseph P. Tracy 1938-4-5 15707 Humboldt North Fork of Mad River (its eastern limit here) Mad River 304 Comment
  UC902109  Ribes menziesii Joseph P. Tracy 1948-3-6 17954 Humboldt Trinidad 60 Comment
  RSA0021780  Ribes menziesii Elmer I. Applegate 1931-3-28 6625 Humboldt Trinidad. [label says Mendocino but should be Humboldt Co.] Comment
  UC1193214  Ribes roezlii P. Zinke 1950-8-4 153 Humboldt 2 mi w Harris Post Office (outside national forest); Quad. 29D3 853 Comment
  BLMAR117  Ribes roezlii var. amictum Jennifer Anthony-Wheeler 1995-3-15 117 Humboldt King range, growing at far N end of Honeydew campground-open grassy floodplain 115 Comment
  CAS-BOT-BC211980  Ribes sanguineum J. H. Thomas 1949-6-13 914 Humboldt Along trail between Le Perron Flat and Whiteys Peak, east of town of Orleans, Six Rivers National Forest 1371 Comment
  HSC20336  Ribes sanguineum E. W. Styskel 1963-3-3 2 Humboldt 3 mi. SE of Korbel on Snow Camp Rd. 290 Comment
  HSC41269  Ribes sanguineum Brad Klipfel 1974-6-25 411 Humboldt Horse Mtn. Comment
  HSC53832  Ribes sanguineum Griswold, Butler 1979-7-10 6280 Humboldt Near Board Camp Mtn., close to the town of Willow Creek 1372 Comment
  CAS-BOT-BC144689  Ribes sanguineum var. glutinosum C. Epling; Wm. Robison 1935-7-22 s.n. Humboldt Patrick's Point Comment
  HSC89424  Ribes sanguineum var. glutinosum P. A. Daly 1984-5-8 7 Humboldt Trinidad Head. 61 Comment
  UC1127604 Image available Ribes sanguineum var. glutinosum R. Stahelin 1933-5-15 Humboldt Freshwater Eureka Quadrangle Comment
  HSC67214  Rigiopappus leptocladus Thomas W. Nelson, James Nelson 1980-6-10 5445 Humboldt Along branch road off Swayback Ridge Rd., 1/2 mi. E of junction 1372 Comment
  UC552251  Romanzoffia californica Joseph P. Tracy 1925-4-5 6954 Humboldt Kneeland Prairie Northern Coast Ranges, Kneeland Prairie 762 Comment
  HSC59061  Romanzoffia californica Thomas Wood 1979-4-20 124 Humboldt At Trinidad Bay 2 Comment
  HSC87236  Romulea rosea var. australis Thomas W. Nelson, Jane P. Nelson 1987-4-11 8421 Humboldt Beside county road that follows Bear River, 100 ft. from junction with Hwy. 1 at Capetown 8 Comment
  HSC32315  Rorippa curvisiliqua D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5657 Humboldt Senteney Rock, a large barren Franciscan Rock along Swayback Ridge. Comment
  UC183573  Rorippa nasturtium-aquaticum Joseph P. Tracy 1912-7-26 3830 Humboldt Kneeland Prairie Northern Coast Ranges, Kneeland Prairie 762 Comment
  UC1199034  Rosa Joseph P. Tracy 1949-8-7 18438 1/2 Humboldt near Box Camp; Trinity Summit 1524 Comment
  CAS-BOT-BC146475  Rosa gymnocarpa Doris K. Kildale 1925-8-16 1142 Humboldt Trinity Summit Trail between Horse Linto Creek & [Tish-tang-i-tang] Tish Tang a Tang 1371 Comment
  HSC35592  Rosa gymnocarpa Thomas W. Nelson, Jane P. Nelson, James Nelson 1975-7-15 2003 Humboldt French Camp, Bald Hills. Comment
  HSC99635  Rosa gymnocarpa T. Jimerson, J. Pageau 1979-6-13 543 Humboldt Near Slate Creek Butte, close to the town of Orleans 549 Comment
  POM275420  Rosa gymnocarpa Lyman D. Benson 1928-7-8 376 Humboldt Weott Ranger Station. Seaward N Coast Mt. Range, S Fork Eel River. 61 Comment
  CAS-BOT-BC146840  Rosa nutkana Volney Rattan 1878-1-1 s.n. Humboldt Mad River Comment
  UC1199022  Rosa nutkana var. nutkana J. P. Tracy 1901-6-23 1163 Humboldt immediate vicinity of Eureka 0 Comment
  CAS-BOT-BC156579  Rubus bifrons Henry M. Pollard 1948-8-9 s.n. Humboldt Near Orleans Comment
  UCD89725  Rubus fruticosus Lindsay Clark 2008-6-23 KRC 1 Humboldt Nadelos Campground in King Range Conservation Area, 3.8 miles SE of Shelter Cove. 551 Comment
  HSC25426  Rubus laciniatus J. O. Sawyer 1972-11-4 2476 Humboldt 2 mi. S of Berry Summit on Titlow Hill Rd. 1220 Comment
  UC1199044  Rubus lasiococcus Joseph P. Tracy 1947-6-26 17746 Humboldt near McKay camp (South Fork Mountain); , near McKay camp 1676 Comment
  CAS-BOT-BC147238  Rubus parviflorus Kenneth Clark 1980-3-23 535 Humboldt On middle terrace of north fork Dead Man's Gulch 76 Comment
  HSC19665  Rubus parviflorus Harvey Doerksen 1962-5-22 25 Humboldt 1/4 mi. N Azalea Reserve State Park, floodplain of Mad River Comment
  HSC22496  Rubus parviflorus G. T. Nordstrom 1966-4-24 11 Humboldt Kneeland-Maple Creek Rd. near jct. with Korbel Rd. Comment
  HSC41325  Rubus parviflorus Brad Klipfel 1974-8-2 516 Humboldt Horse Mtn. Comment
  HSC69534  Rubus parviflorus R. Kalal 1979-5-20 74 Humboldt Logging Rd. E of HSU Campus, Arcata 46 Comment
  UC666862  Rubus parviflorus Joseph P. Tracy 1933-6-7 12524 Humboldt Bridgeville 198 Comment
  SEINET4948924  Rubus parviflorus Unknown 1938-8-6 15397 Humboldt Eureka Comment
  CAS-BOT-BC147360  Rubus pensilvanicus Henry M. Pollard 1948-8-9 s.n. Humboldt Near Orleans Comment
  CAS-BOT-BC156722  Rubus spectabilis Alice Eastwood 1939-3-19 s.n. Humboldt Garden Club of America Grove Comment
  HSC60111  Rubus spectabilis M. A. Baker 1977-5-1 278 Humboldt E of Humboldt State University. Comment
  SBBG50775  Rubus spectabilis D. G. Forbes 1966-4-4 66 -430 Humboldt Big Lagoon St Park, St Hwy 101 Comment
  UC1199047  Rubus spectabilis Joseph P. Tracy 1939-7-9 16336 Humboldt Snow Camp 1402 Comment
  UCD17612  Rubus ursinus H. Olmo; T. S. Mallah 1946-6-26 46- 053 Humboldt California. Humboldt County: 6 miles from Dyerville junction of U.S. 101, on road to Weitchpec. Comment
  UCD89723  Rubus ursinus Lindsay Clark 2008-6-23 KRC 2 Humboldt Nadelos Campground in King Range Conservation Area, 3.8 miles SE of Shelter Cove. 551 Comment
  UCR45827  Rubus ursinus Kenneth Clark 1980-4-18 593 Humboldt North Coast, Shelter Cove. On lower alluvial terrace of Dead Man's Gulch 24 Comment
  HSC33748  Rumex acetosella A. Montalvo 1975-5-24 278 Humboldt Samoa Dunes off Samoa Blvd., across from the boat landing Comment
  HSC89592  Rumex acetosella M. Roantree 1985-5-24 60 Humboldt E side of Trinidad Head Comment
  HSC95647  Rumex acetosella Andrea Pickart 2002-4-3 36 Humboldt Samoa Dunes, Eureka airport. 15 Comment
  UCD100972  Rumex acetosella Collector unknown Date unknown s.n. Humboldt location unknown. Comment
  UCD100992  Rumex acetosella Lincoln Constance 1934-6-3 807 Humboldt Bull Creek Region, South Fork Eel River. Along N side of Redwood Hwy, at Dyerville. Comment
  HSC102195  Rumex californicus M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-4 1109 Humboldt Andy's Camp 1564 Comment
  CAS-BOT-BC421524  Rumex crassus Doris K. Kildale 1926-8-12 2481 Humboldt Moonstone Beach near Trinidad Comment
  UCD101126  Rumex crispus Linda M. Barker 1976-6-22 1622 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  UCR123958  Rumex crispus George K. Helmkamp, E. A. Helmkamp 2001-7-8 6984 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
  HSC60366  Rumex crispus Terry Roth 1979-5-26 87 Humboldt Near jct. of Sunset Ave. and H St., Arcata Comment
  HSC17617  Rumex obtusifolius David K. Smith 1968-11-20 72 Humboldt At jct. of Old Arcata Rd. and Jacoby Creek Rd. Comment
  HSC36319  Rumex persicarioides Thomas W. Nelson 1975-8-10 2242 Humboldt At Shively Comment
  HSC93512  Ruppia cirrhosa Gordon Leppig 1998-6-25 752 Humboldt Hwy. 101 marker 81.60, brackish ditch on E side of Hwy. 2 Comment
  UCD98453  Sagina maxima subsp. crassicaulis Joseph P. Tracy 1947-9-1 17927 Humboldt Big Lagoon. 6 Comment
  JEPS93952  Salicornia virginica Vernon H. Oswald 1998-9-2 9562 Humboldt Humboldt Bay National Wildlife Refuge s of Eureka (Hookton Slough Trail on the levee along s side of Hookton Slough); Humboldt Bay National Wildlife Refuge, Hookton Slough Comment
  CAS-BOT-BC132709  Salix A. T. Whittemore 1980-3-15 80 -006 Humboldt Arcata, in residential area, along Alliance Road from Foster Ave. to the railroad tracks Comment
  CAS-BOT-BC132711  Salix A. T. Whittemore 1980-3-15 80 -005 Humboldt Arcata, in residential area, along Alliance Road from Foster Ave. to the railroad tracks Comment
  CAS-BOT-BC103820  Salix exigua Carleton R. Ball; Harold E. Parks; Joseph P. Tracy 1932-5-12 01237 Humboldt floodplain of Van Duzen River at Blue Slide 91 Comment
  POM220112  Salix exigua H. E. Parks, Joseph P. Tracy 1931-5-17 971 Humboldt Mouth of Willow Creek at Trinity River. 150 Comment
  POM361045  Salix exigua Carleton R. Ball, Harold E. Parks, Joseph P. Tracy 1932-5-17 1335 Humboldt Above Trinity River. 1 mile below bridge on Trinity Hwy. 152 Comment
  UC526710  Salix exigua H. E. Parks and Joseph P. Tracy 1934-7-25 11090 Humboldt at Willow Creek Trinity R. Valley; Northern Coast Ranges 152 Comment
  HSC19946  Salix exigua var. hindsiana C. R. Ball, H. E. Parks, J. P. Tracy 1932-5-17 1332 Humboldt Trinity River, near bridge on Trinity Hwy. 152 Comment
  UC481302  Salix exigua var. hindsiana Harold E. Parks and Joseph P. Tracy 1931-5-17 970 Humboldt mouth of Willow Creek at Trinity R. 150 Comment
  CAS-BOT-BC107702  Salix hookeriana Harold E. Parks 1931-5-12 956 Humboldt Samoa, Humboldt Bay Comment
  CAS-BOT-BC107720  Salix hookeriana W. R. Dudley 1899-1-1 s.n. Humboldt Arcata Comment
  CAS-BOT-BC107775  Salix hookeriana Harold E. Parks; Carleton R. Ball; Joseph P. Tracy 1932-5-12 1246 Humboldt Gravelly floodplain of Van Dezen River at Blue Slide 91 Comment
  CHSC96715  Salix hookeriana Gordon Leppig 2005-4-8 2211 Humboldt Humboldt Bay Dunes and Wetlands. Eureka, swamp at west end of W. Hawthorne St. NAD 27 UTM Zone 10, 4515862 N, 400315 E. 3 Comment
  HSC20066  Salix hookeriana C. R. Ball, H. E. Parks, J. P. Tracy 1932-5-12 1231 Humboldt Van Duzen River, 1.5 mi. E of Alton 30 Comment
  HSC20150  Salix hookeriana Francis Winter 1960-3-26 Humboldt Samoa Peninsula 6 mi. W of Arcata Comment
  HSC40870  Salix hookeriana Linda M. Barker 1976-4-13 1383 Humboldt Lanphere-Christensen Dunes, 3 mi. W of Arcata Comment
  HSC90382  Salix hookeriana Jean Hanson 1980-3-8 1 Humboldt Indian (Gunther) Island, Humboldt Bay, Eureka, W end of island Comment
  UC1225923  Salix hookeriana Joseph P. Tracy 1942-7-26 17297 Humboldt near the Redwood House S. Yaeger Creek 609 Comment
  UC470426  Salix hookeriana Joseph P. Tracy 1931-11-15 9762 Humboldt Alton to Fortuna (on gravel bars); Northern Coast Region, Eel River 15 Comment
  UC490456  Salix hookeriana Joseph P. Tracy 1932-5-10 9954 Humboldt Mattole R. near Petrolia; North Coast Region, Mattole R. 15 Comment
  UC504061  Salix hookeriana Jim Davis Apr 25 1933-Apr 27 1933 8 Humboldt Samoa Comment
  UC512080  Salix hookeriana Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-11 1225 Humboldt 1 mi n Samoa (pine barrens near coast, r.r right-of-way) Comment
  UC518897  Salix hookeriana Jim Davis Apr 25 1933-Apr 27 1933 5 Humboldt around Eureka Comment
  UC519342  Salix hookeriana Joseph P. Tracy 1933-10-8 13087 Humboldt Blue Slide Northern Coast Ranges, Van Duzen River 91 Comment
  UC537984  Salix hookeriana Joseph P. Tracy 1934-9-22 13676 Humboldt mouth of Mad R.; North Coast Ranges, Mad R. 9 Comment
  JEPS14787  Salix laevigata Joseph P. Tracy 1933-6-9 12528 Humboldt along Eel River Shively; Northern Coast Ranges 30 Comment
  UC481801  Salix laevigata Mrs. H. P. Bracelin 1931-5-1 267 Humboldt between Miranda and Meyers (Sylvandale Station, S. Fork Eel R.); Sylvandale Station, S. Fork Eel R. Comment
  UC906710  Salix laevigata Harold E. Parks and Joseph P. Tracy 1942-5-16 11568 Humboldt vicinity of Garberville Garberville 152 Comment
  HSC19987  Salix lasiandra H. E. Parks 1931-5-14 959 Humboldt Lower Van Duzen River 0 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
  UC481283  Salix lasiandra subsp. lasiandra Harold E. Parks 1931-5-14 959 Humboldt Van Duzen R. between Alton and Carlotta; Van Duzen R. 15 Comment
  CAS-BOT-BC125216  Salix lasiandra var. lasiandra W. J. Ferlatte 1967-6-13 1120 Humboldt Cranell 3 Comment
  SD1005  Salix lasiandra var. lasiandra Harold E. Parks 1931-5-14 959 Humboldt Van Duzen River between Alton and Carlotta 14 Comment
  SJSU164  Salix lasiandra var. lasiandra H. E. Parks 1931-5-14 959 Humboldt Van Duzen R between Alton & Carlotta 15 Comment
  CAS-BOT-BC107589  Salix lasiolepis Joseph P. Tracy; Carleton R. Ball; Harold E. Parks 1932-5-17 1318 Humboldt On banks of Redwood Creek, at Berry's, on Trinity Highway 274 Comment
  JEPS12924  Salix lasiolepis H. E. Parks and Joseph P. Tracy 1933-3-19 11007 Humboldt 2 mi w Bridgeville (near Big Rock); Northern Coast Ranges 182 Comment
  JEPS14776  Salix lasiolepis Joseph P. Tracy 1933-3-19 10931 Humboldt on Van Duzen River Blue Slide; Northern Coast Ranges 91 Comment
  RSA34275  Salix lasiolepis Doris K. Kildale 1927-3-22 2934 Humboldt Ryan Slough. Comment
  UC469406  Salix lasiolepis Joseph P. Tracy 1927-3-27 7867 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
  UC470407  Salix lasiolepis Joseph P. Tracy 1931-9-26 9697 Humboldt at Berry's Redwood Creek; Northern Coast Ranges, Redwood Creek 274 Comment
  UC470409  Salix lasiolepis Joseph P. Tracy 1931-9-19 9675 Humboldt Alton Northern Coast Region 30 Comment
  UC471107  Salix lasiolepis Joseph P. Tracy 1931-9-26 9695 Humboldt at Berry's Redwood Creek; Northern Coast Ranges, Redwood Creek 274 Comment
  UC471109  Salix lasiolepis Joseph P. Tracy 1931-9-26 9695 Humboldt at Berry's Redwood Creek; Northern Coast Ranges, Redwood Creek 274 Comment
  UC490551  Salix lasiolepis Joseph P. Tracy 1932-3-6 9776 Humboldt at Willow Creek Trinity R. Valley; Northern Coast Ranges, Trinity R. Valley 152 Comment
  UC506343  Salix lasiolepis Joseph P. Tracy 1933-5-11 10932 Humboldt Blue Slide, on Van Duzen River 91 Comment
  UC506344  Salix lasiolepis Joseph P. Tracy 1933-3-19 10932 Humboldt Blue Slide, on Van Duzen River 228 Comment
  UC506375  Salix lasiolepis Joseph P. Tracy 1933-4-9 10963 Humboldt Bridgeville 228 Comment
  UC512035  Salix lasiolepis Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-17 1324 Humboldt w. slope Berry's Mt. (e. of Redwood Creek, on Trinity Hwy.) 762 Comment
  UC54677  Salix lasiolepis J. P. Tracy 1901-4-7 1011 Humboldt Immediate vicinity of Eureka 0 Comment
  CAS-BOT-BC107300  Salix lasiolepis var. bigelovii Doris K. Kildale 1926-12-19 2873 Humboldt South Fork 51 Comment
  CAS-BOT-BC107411  Salix lasiolepis var. lasiolepis Doris K. Kildale 1927-3-20 2907 Humboldt Stephens Grove on South Fork of Eel River 60 Comment
  HSC102022  Salix lucida subsp. lasiandra M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-12 923 Humboldt Rustic Camp, northwest of Patterson Meadows 1512 Comment
  RSA298153  Salix lucida subsp. lasiandra Thomas W. Nelson 1978-4-23 3888 Humboldt At jct of Copher and Samoa Rds. N of Samoa. Comment
  CAS-BOT-BC125610  Salix melanopsis Doris K. Kildale 1927-5-13 3143 Humboldt Redwood Creek at Berry's 289 Comment
  JEPS12942  Salix melanopsis Joseph P. Tracy 1931-6-14 9582 Humboldt Van Duzen River Alton; Northern Coast Region 30 Comment
  JEPS14848  Salix melanopsis Lincoln Constance 1934-5-27 688 Humboldt s end of Dyerville Bridge (S. Fork Eel River); Bull Creek Region, S. Fork Eel River 45 Comment
  LA208934  Salix melanopsis Harold E. Parks; 1931-5-14 964 Humboldt Van Duzen River between Alton and Carlotta 15.0 Comment
  LA208935  Salix melanopsis Harold E. Parks; 1931-5-14 961 Humboldt Van Duzen River between Alton and Carlotta 15.0 Comment
  SBBG57953  Salix melanopsis H. E. Parks, J. P. Tracy 1931-5-17 967 Humboldt mouth of Willow Crk at Trinity River 150 Comment
  UC1196564  Salix melanopsis Joseph P. Tracy 1931-5-3 9347 Humboldt Mad R. near Blue Lake; Northern Coast Region, Mad R. 15 Comment
  UC481284  Salix melanopsis Harold E. Parks 1931-5-14 960 Humboldt Van Duzen R. between Alton and Carlotta; Van Duzen R. 15 Comment
  UC481357  Salix melanopsis Harold E. Parks 1931-5-14 956 a Humboldt Van Duzen R. above Bridgeville; Van Duzen R. 300 Comment
  UC512012  Salix melanopsis Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-12 1235 Humboldt 1 1/2 mi. e. Alton (floodplain of Van Duzen R.); Van Duzen R. 30 Comment
  UC519367  Salix melanopsis Joseph P. Tracy 1933-7-20 12805 Humboldt Mad R. near Blue Lake; Northern Coast Region, Mad R. 15 Comment
  UC519369  Salix melanopsis Joseph P. Tracy 1933-7-22 12824 Humboldt S. Fork Eel R. at mouth of Bull Creek; Northern Coast Ranges, S. Fork Eel R. 45 Comment
  UC726592  Salix melanopsis A. A. Heller 1923-7-10 13796 Humboldt between Scotia and Pepperwood (Eel R.); Eel R. Comment
  CAS-BOT-BC129128  Salix scouleriana A. T. Whittemore 1979-4-5 79 -012 Humboldt Arcata, cleared field along Alliance Road immediately north of Arcata High School 6 Comment
  CAS-BOT-BC129137  Salix scouleriana Joseph P. Tracy 1932-7-20 10738 Humboldt Trail below Corral Prairie - Trinity Summit, Klamath Mountains 1371 Comment
  CAS-BOT-BC129142  Salix scouleriana H. E. Parks 1932-11-25 1351 Humboldt Spruce Cove (Parks Ranch), Trinidad Comment
  HSC38188  Salix scouleriana Thomas W. Nelson, James Nelson 1976-3-5 3294 Humboldt Beside Hwy. 101 near summit of Table Bluff Comment
  HSC96596  Salix scouleriana Gordon Leppig 2003-2-22 1814 Humboldt Eureka Slough, NE corner of log pond 3 Comment
  OBI35882  Salix scouleriana David J. Keil 1983-7-1 17291 Humboldt Between Ferndale and Bear River Ridge Rd along Mattole Rd Comment
  UC212995  Salix scouleriana Joseph P. Tracy 1919-9-23 5283 Humboldt Trinity Summit Northern Coast Ranges, Trinity Summit 1828 Comment
  UC470445  Salix scouleriana Joseph P. Tracy 1929-10-20 8680 Humboldt Larrabee Valley Northern Coast Ranges, Larrabee Valley 701 Comment
  UC519353  Salix scouleriana Joseph P. Tracy 1933-8-30 13056 Humboldt Grouse Mt. North Coast Ranges, Grouse Mt. 1524 Comment
  UC519354  Salix scouleriana Joseph P. Tracy 1933-7-11 12706 Humboldt Grouse Mt.; North Coast Ranges, Grouse Mt. 1524 Comment
  UC525975  Salix scouleriana H. E. Parks 1933-1-24 1352 Humboldt Spruce Cove (Parks Ranch) Trinidad; , Spruce Cove (Parks Ranch) Comment
  UC54674  Salix scouleriana J. P. Tracy 1900-12-30 977 Humboldt immediate vicinity Eureka Eureka 0 Comment
  UC54926  Salix scouleriana J. P. Tracy 1901-2-3 991 Humboldt immediate vicinity Eureka 0 Comment
  CHSC9650  Salix sitchensis E. L. Smith 1971-8-17 1021 Humboldt At Field's Landing ca. 7 mi s of Eureka. Comment
  HSC20101  Salix sitchensis C. R. Ball, H. E. Parks, J. P. Tracy 1932-5-13 1256 Humboldt Mad River at Engelhart gravel pit, 2 mi. E of Redwood Hwy. and above Blue Lake Rd. Comment
  HSC33297  Salix sitchensis R. W. Becking, Thomas Overturf 1975-3-25 705 Humboldt Mad River, 1 mi. S of Blue Lake 21 Comment
  HSC33299  Salix sitchensis R. W. Becking, Thomas Overturf 1975-3-25 703 Humboldt Mad River, 1 mi. S of Blue Lake 21 Comment
  HSC43418  Salix sitchensis R. Sutherland 1978-2-18 4 .18278 Humboldt S side Mattole River 8 Comment
  HSC79548  Salix sitchensis Kenneth Clark 1980-3-27 548 Humboldt Creek on W slope of Dead Man's Gulch 114 Comment
  UC490500  Salix sitchensis Joseph P. Tracy 1932-10-2 10857 Humboldt Redwood Creek near Bair's; Northern Coast Ranges, Redwood Creek 213 Comment
  UC537983  Salix sitchensis Joseph P. Tracy 1934-9-22 13671 Humboldt mouth of Mad R.; North Coast Ranges, Mad R. 9 Comment
  UC1196618  Salix tracyi Joseph P. Tracy 1936-10-17 15201 Humboldt Blue Slide, on Van Duzen River 91 Comment
  UC1225921  Salix tracyi Joseph P. Tracy 1942-4-26 17071 Humboldt near Blue Lake, along Mad River 15 Comment
  HSC100412  Sambucus racemosa Carl C. Marshall Apr 1886 164 Humboldt Near Humboldt Bay. Comment
  HSC69779  Sambucus racemosa var. racemosa R. Kalal 1979-4-21 82 Humboldt 0.4 mi. E of Table Bluffs County Park. 15 Comment
  CHSC68485  Sanicula arctopoides Vernon H. Oswald 1997-4-10 8330 Humboldt Elk Head, north end of Trinidad State Beach. Along the edge of the bluffs overlooking the ocean. 30 Comment
  HSC95577  Sanicula arctopoides Andrea Pickart 2002-3-14 7 Humboldt Samoa Dunes, BLM Endangered Plant Protection Area 0 Comment
  HSC90000  Sanicula crassicaulis Leonel Arguello 1989-6-10 Humboldt Lanphere- Christensen Dunes Preserve, 3 mi. W of Arcata. Beside the N fork of the Hunt trail. Comment
  JEPS1012  Sanicula graveolens W. L. Jepson July 16 - 23, 1902 2046 Humboldt Trinity Summit 2133 Comment
  JEPS986  Sanicula laciniata Joseph P. Tracy 1923-3-17 6163 Humboldt Northern Coast Ranges, Garberville Garberville; Northern Coast Ranges, Garberville 121 Comment
  JEPS992  Sanicula laciniata Joseph P. Tracy 1938-3-27 15701 Humboldt Miranda, along South Fork of Eel River South Fork Eel River; Miranda, South Fork Eel River 121 Comment
  UC1197084  Sanicula laciniata Joseph P. Tracy 1925-3-29 6950 Humboldt Northern Coast Ranges, South Fork of Eel River, Miranda South Fork Eel River; Northern Coast Ranges, , Miranda 91 Comment
  HSC82107  Sanicula tracyi Thomas W. Nelson, Jane P. Nelson 1980-5-25 5248 Humboldt Along road from Dinsmore to Anderson Crossing, McKeown Ranch Rd. 100 m N of junction of road to Hindley Cabin 823 Comment
  HSC71008  Sanicula tuberosa J. M. DiTomaso 1981-5-15 2009 Humboldt Larabee Valley, 10 mi. E of Bridgeville on Hwy. 36 Comment
  SEINET13945259 Image available Sanicula tuberosa Thomas Nelson 1978-1 4095 Humboldt T2N, R5E, Sec 33, elev 2500 ft. Oak woodland on McKeown Ranch north of Dinsmore 762 Comment
  UC25417  Satureja douglasii J. Burtt Davy 1899-6-11 5412 Humboldt Hubbards Station North Coast Ranges Comment
  UC492225  Saxifraga californica Joseph P. Tracy 1927-3-27 7851 Humboldt near the South Fork (Trinity River Valley); Northern Coast Ranges, Trinity River Valley 182 Comment
  SD42363  Saxifraga mertensiana Carl B. Wolf 1941-3-2 9991 Humboldt N. Coast Range. 2 mi. s. of Honeydew along Honeydew Creek 152 Comment
  UC1198889  Saxifraga mertensiana Joseph P. Tracy 1932-4-24 9813 Humboldt between Miranda and Redway (South Fork Eel River); North Coast Ranges, South Fork Eel River 91 Comment
  CAS-BOT-BC111699  Schoenoplectus pungens var. badius A. A. Heller 1924-7-21 13868 Humboldt Plentiful in a drier part of a salt marsh at Eureka. Comment
  UC1103630  Scirpus cernuus Joseph P. Tracy 1939-8-20 16433 Humboldt Big Lagoon 6 Comment
  HSC79367  Scirpus microcarpus Kenneth Clark 1980-4-18 601 Humboldt Above Dead Man's Gulch, in upper meadow 213 Comment
  UC1100811  Scirpus pungens R. U. Hart 1946-6-7 Humboldt 4 mi w Ferndale (s side of mouth of Eel River valley, pond w of Centerville); Eel River valley Comment
  HSC15632  Scoliopus bigelovii F. B. Plett 1963-4-24 30 Humboldt 1.5 mi. N of Trinidad along Old Hwy. 101 Comment
  RSA183587  Scoliopus bigelovii R. D. Zortman 1963-3-16 13 Humboldt 5 miles northeast of Arcata; south of the Mad River, off Warren Creek Road. 91 Comment
  CAS-BOT-BC517416  Scoliopus bigelovii Elizabeth Parsons Hawver 1915-6-1 s.n. Humboldt Carlotta Comment
  SEINET12050518  Scoliopus bigelovii F. H. Utech 1988-1 88 -024 Humboldt 1.5 mi WNW of Weott on Ave of the Giants (alt US 101), W.D. & W.H. Clark Redwood Grove 40 Comment
  HSC21128  Scrophularia californica C. B. Wolf 1927-8-29 1207 Humboldt Devil's Gate, S of Cape Mendocino. Comment
  HSC72406  Scrophularia californica J. P. Smith 1973-5-26 6820 Humboldt Scotia Bluffs along the Eel River near Rio Dell Comment
  HSC89423  Scrophularia californica P. A. Daly 1984-5-8 13 Humboldt Trinidad Head 61 Comment
  SBBG52998  Scrophularia californica J. D. Hobson -Jul-1966 Humboldt S end of sand spit forming Eureka Harbor, 10 mi S of Eureka; Loleta Comment
  HSC35354  Scutellaria siphocampyloides A. M. Montalvo, J. D. Ackerman 1975-6-22 483 Humboldt 6.4 mi. W of Dinsmore along Hwy. 36 Comment
  UC32583  Scutellaria siphocampyloides Chesnut and Drew 1888-7-29 Humboldt Louse Creek Comment
  HSC79342  Sedum laxum subsp. flavidum D. K. Imper 1983-6-15 Humboldt Along Hwy. 299 S of Hwy, adjacent to swimming hole Comment
  HSC99534  Sedum laxum subsp. flavidum K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-28 199 Humboldt Near North Trinity Mtn, along trail to Water Dog Lakes, Six Rivers National Forest. 1829 Comment
  HSC76353  Sedum laxum subsp. heckneri Teresa Prendusi 1981-7-24 506 Humboldt Near Whiteys Peak 1634 Comment
  HSC76354  Sedum laxum subsp. heckneri Denis Kearns 1981-6-24 32 Humboldt Near Cedar Camp 1219 Comment
  HSC70725  Sedum radiatum Gail Newton 1980-7-14 1520 Humboldt Near Deadman Ridge 1097 Comment
  HSC73871  Sedum radiatum Gail Newton 1980-7-14 1461 Humboldt Near Last Chance Ridge. 1219 Comment
  RSA0081470  Sedum spathulifolium Dave Kelly, W. Wisura 1986-7-27 4130 Humboldt 13.2 miles E of Bridgeville, along Hwy 36. Comment
  CAS-BOT-BC59111  Sedum spathulifolium subsp. pruinosum Ira L. Wiggins 1932-6-18 5878 Humboldt Mouth of Little River. Comment
  CAS-BOT-BC59120  Sedum spathulifolium subsp. pruinosum Alice Eastwood 1907-4-22 38 Humboldt Port Trinidad Comment
  CAS-BOT-BC59119  Sedum spathulifolium subsp. pruinosum Ynez Whilton Winblad 1941-6-22 s.n. Humboldt Between Eureka and Orick. Comment
  HSC92016  Sedum spathulifolium var. pruinosum E. Mackey 1987-9-7 Humboldt Patrick's Point State Park Comment
  HSC44633  Sedum spathulifolium var. spathulifolium M. Alcasas 1978-6-3 123 Humboldt Titlow Hill Rd., 0.5 mi. from Hwy. 299 1037 Comment
  HSC45074  Selaginella wallacei R. Sutherland 1978-4-22 1 .22478 Humboldt Along King's Crest Trail 1098 Comment
  HSC74376  Senecio integerrimus M. A. Baker 1980-6-28 2481 Humboldt Near Mad River Buttes 1445 Comment
  CAS-BOT-BC364021  Senecio integerrimus var. major Doris K. Kildale 1926-5-2 1896 Humboldt Willow Creek Flat 152 Comment
  HSC98958  Senecio integerrimus var. major Cara Witte 2008-7-28 950 Humboldt Spike Buck Mountain. Forest Service Road 5N18. 1/2 mile from intersection with National Forest 1. 1565 Comment
  UCD135620  Senecio minimus Gilfillan 1921-8-16 s.n. Humboldt Eureka. Comment
  CAS-BOT-BC364222  Senecio sylvaticus L. R. Abrams 1916-7-11 6007 Humboldt Near Grizzly Creek 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
  UCR37913  Senecio triangularis D. K. Imper 1982-7-23 1481 Humboldt near Onion Lake 1371 Comment
  CAS-BOT-BC85840  Sequoia sempervirens Joseph P. Tracy 1926-2-21 7355 Humboldt Blue Slide, on Van Duzen River 91 Comment
  SEINET3141794  Sequoia sempervirens A. L. Reina G., T. R. Van Devender 2001-12-25 2001 -1044 Humboldt 3.2 km S of Red Creston Alt. CA 101, Humboldt Redwoods State Park Comment
  SEINET11737926  Sequoia sempervirens K. S. Erdman 1970-1 4840 Humboldt Redwood Creek, about 2-3 mi above the road end, near McArthur and Elam Creeks, Redwood Nat'l Park Comment
  HSC19859  Sherardia arvensis John A. Dubois 1962-5-23 25 Humboldt 20 mi. E of Arcata Comment
  UC18874  Sidalcea diploscypha C. C. Marshall 1888-1 Humboldt Comment
  CAS-BOT-BC205570  Sidalcea malachroides A. M. Vollmer; L. Beane 1951-6-11 136 Humboldt Yager Creek Road, on way to Carlotta Comment
  HSC96580  Sidalcea malachroides Gordon Leppig, Todd Treadwell 2005-6-8 2248 Humboldt Blue Slide Creek watershed, Pacific Lumber Co. land. 245 Comment
  POM256469  Sidalcea malachroides Joseph P. Tracy 1936-5-17 14812 Humboldt Fickle Hill, 6 miles southeast of Arcata. 610 Comment
  UC668140  Sidalcea malachroides Joseph P. Tracy 1936-5-17 14812 Humboldt 6 mi se Arcata (Fickle Hill); se of Arcata, Fickle Hill 609 Comment
  JEPS79986  Sidalcea malviflora subsp. asprella Joseph P. Tracy 1929-7-4 8626 Humboldt French Camp Ridge; Northern Coast Ranges 1066 Comment
  UC177001  Sidalcea malviflora subsp. patula Joseph P. Tracy 1912-6-9 3669 Humboldt Alton Northern Coast Region, Alton 30 Comment
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May 9 2014
  HSC104351  Sidalcea malviflora subsp. patula James Regan, Humboldt Redwood Co., LLC 2005-7-7 13 Humboldt Kneeland 854 Comment
  CAS-BOT-BC205761  Sidalcea oregana David Imper 1985-8-1 s.n. Humboldt Six Rivers National Forest. Approximately 1/2 mile west of Ladder Rock alongside trail 1371 Comment
  UC14437  Silene antirrhina Chestnut and Drew 1888-7-9 Humboldt Kneeland Comment
  UC1223448  Silene bernardina Joseph P. Tracy 1951-6-26 19586 Humboldt at extreme head of Redwood Creek n side Board Camp Mountain, head of Redwood Creek (n side of Board Camp Mountain) 1541 Comment
  UC162882  Silene bridgesii Harley P. Chandler June, 1901 1505 Humboldt Klamath River North Coast Ranges, Klamath River 426 Comment
  CDA38659  Silene californica B. Villegas/D. Juliano 2010-6-17 PDR# 1535021 -C Humboldt Alderpoint: Garberville - Alderpoint Rd. 0 Comment
  HSC58156  Silene campanulata subsp. glandulosa G. L. Clifton, Griswold 1979-8-2 12208 Humboldt Near Oregon Creek, close to the town of Hoopa 1663 Comment
  HSC76246  Silene campanulata subsp. glandulosa Denis Kearns 1981-6-24 1 Humboldt Near Cedar Camp 1219 Comment
  CAS-BOT-BC388938  Silene grayi Joseph P. Tracy 1932-7-12 10477 Humboldt Trinity Summit. Head of Brett Hole 1828 Comment
  UC14434  Silene hookeri Chesnut and Drew 1888-7-19 Humboldt Pilot Ridge Comment
  RSA502370  Silene hookeri D. W. Taylor 1971-5-12 1064 Humboldt At the junction of the Trinity and New Rivers, 305 Comment
  UC1223229  Silene hookeri Joseph P. Tracy 1950-6-23 18880 Humboldt nw slope of Buck Mountain , Burr Valley (Burr Valley Road, Burr Valley) 1066 Comment
  HSC4165  Silene laciniata subsp. californica Jack Rockwell 1962-4-29 48 Humboldt N side Hwy. 30 253 Comment
  CAS-BOT-BC389059  Silene laciniata subsp. californica H. E. Parks 1930-5-1 0751 Humboldt Vicinity of Hydesville Comment
  HSC13918  Sisyrinchium bellum J. F. Knezevich 1968-5-23 457 Humboldt N of Trinidad at Big Lagoon 0 Comment
  HSC13925  Sisyrinchium bellum D. E. Anderson 1962-3-31 1966 Humboldt Along new Hwy. 101, W side of Freshwater Lagoon Comment
  HSC96472  Sisyrinchium californicum Gordon Leppig 1997-6-19 461 Humboldt Big Lagoon County Park, Big Lagoon Bog 3 Comment
  HSC27000  Sisyrinchium californicum Brad Klipfel 1973-8-17 271 Humboldt Big Lagoon Park, N of Trinidad Comment
  HSC98036  Solanum parishii Cara Witte 2007-7-19 548 Humboldt Ammon Ridge Rd., 2 mi. E of intersection with National Forest 1. 1453 Comment
  JEPS12110  Solanum physalifolium var. nitidibaccatum Joseph P. Tracy 1940-9-28 16738 Humboldt Eureka 30 Comment
  JEPS12167  Solanum umbelliferum Joseph P. Tracy 1937-5-30 15316 Humboldt Bridgeville 198 Comment
  POM247118  Solidago californica Joseph P. Tracy 1937-9-5 15682 Humboldt Trinity River Valley, at Willow Creek. 152 Comment
  CAS-BOT-BC365432  Solidago elongata Marcus E. Jones 1931-7-12 29135 Humboldt Alton Comment
  HSC75261  Solidago elongata J. O. Sawyer, M. A. Ericksen 1980-8-18 4055 Humboldt Slopes below Mill Creek Lakes, N Trinity Mtn. Research Natural Area 1707 Comment
  SBBG28018  Solidago elongata H. E. Parks -Jul-1931 1056 Humboldt Trinidad 76 Comment
  UC175202  Solidago elongata Joseph P. Tracy 1913-9-9 4397 Humboldt Patrick's Point Northern Coast Ranges, Patrick's Point 30 Comment
  UC302291  Solidago elongata Joseph P. Tracy 1926-7-25 7749 Humboldt Big Lagoon Northern Coast Region, Big Lagoon 6 Comment
  LA204243  Solidago lepida var. salebrosa S. T. Parks; H. E. Parks 1930-9-14 785 Humboldt North shore of Big Lagoon Comment
  CAS-BOT-BC365662  Solidago spathulata L. R. Abrams 1916-7-20 6144 Humboldt Eureka Comment
  UC1173677  Solidago spathulata Joseph P. Tracy 1939-8-18 16426 Humboldt on vacant lot on Clark St. (between C and D; 1/2 mi from bay); Eureka 15 Comment
  UC1223174  Solidago spathulata Joseph P. Tracy 1948-9-26 18226 Humboldt 6 mi se Arcata (Fickle Hill); Fickle Hill 609 Comment
  UC165033  Solidago spathulata J. P. Tracy 1901-8-7 1268 Humboldt opposite Eureka (Ocean Beach of Samoa); Samoa Comment
  UC1199288  Soliva sessilis Joseph P. Tracy 1939-4-18 16217 Humboldt Garberville 152 Comment
  HSC6219  Sonchus asper Paul Shields 1955-6-16 Humboldt HSC Campus Comment
  UC582435  Sonchus oleraceus Joseph P. Tracy 1935-5-16 13805 Humboldt Eureka 30 Comment
  CAS-BOT-BC374596  Sonchus oleraceus F. J. Kirby 1958-7-1 s.n. Humboldt West of Bridgeville 152 Comment
  HSC60123  Sonchus oleraceus M. A. Baker 1978-5-20 559 Humboldt Hoopa Indian Reservation Comment
  RSA246788  Sparganium angustifolium subsp. emersum Robert F. Thorne, Percy C. Everett 1965-8-9 35321 Humboldt Clam Beach County Park: along highway. 3 Comment
  RSA640443  Spartina Avis Keedy 1988-9-18 8 Humboldt On Jolly Giant Creek near mouth. Arcata Salt Marsh Project. Comment
  UCD92968  Spartina densiflora Phyllis Faber 1983-11-11 s.n. Humboldt Humboldt Bay, Arcata. Comment
  CAS-BOT-BC149620  Spiraea douglasii Harley P. Chandler 1901-5-1 1197 Humboldt Humboldt Bay 30 Comment
  HSC23024  Spiraea douglasii D. La Conte 1970-10-23 14 Humboldt Big Lagoon Comment
  HSC55076  Spiranthes romanzoffiana G. L. Clifton, Griswold 1979-7-31 11686 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1805 Comment
  UC275578  Spiranthes romanzoffiana Joseph P. Tracy with H. E. Parks 1924-8-3 6767 Humboldt Big Lagoon Northern Coast Region 6 Comment
  PASA1130  Stachys ajugoides Frank W. Peirson 1932-7-7 Humboldt Near Willow Creek Comment
  CDA41012  Stachys ajugoides var. rigida T. C. Fuller 1958-6-17 1716 Humboldt Wildcat Ridge near Bunker Hill. 0 Comment
  UCLA70858  Stachys ajugoides var. rigida Joseph Andorfer Ewan 1937-7-29 10773 Humboldt Richardson Grove South Fork Eel River Comment
  UC154006  Stachys chamissonis Joseph P. Tracy 1907-6-25 2577 Humboldt region about Humboldt Bay; Northern Coast Region, Elk River Valley 0 Comment
  UC1103548  Stellaria media Joseph P. Tracy 1913-6-14 4124 Humboldt opposite Buck Mountain (Dinsmore's Ranch, in Valley of Van Duzen River); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  BLMAR188  Stellaria nitens Donald Hazlett 1994-6-7 188 Humboldt King range, near horse Mt. Ridge rd 670 Comment
  HSC32538  Stephanomeria virgata Thomas W. Nelson 1973-8-19 1115 Humboldt McKeown Ranch N of Dinsmore Comment
  HSC68958  Stipa lemmonii Jacqueline Greenleaf 1980-7-16 251 Humboldt Near Buck Mtn. 1250 Comment
  OBI22262  Stipa lemmonii Joseph P. Tracy 1938-6-17 15968 Humboldt Panther garp, on the road from Bull Crk to Upper Mattole 823 Comment
  POM126166  Streptanthus tortuosus Joseph P. Tracy 1922-9-3 6106 Humboldt Klamath River at Bluff Creek. 152 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
  JEPS8452  Streptopus amplexifolius var. americanus Rimo Bacigalupi with J. P. Tracy, L. Constance, R. Moran, R. L. Rodriguez, and S. Carlquist 1951-6-14 3417 Humboldt Bald Mountain; at Snow Camp, ridge between Mad River and Redwood Creek (Bald Mountain ridge) 1432 Comment
  HSC48390  Swertia radiata Brad Klipfel 1973-6-10 114 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  UCD137442  Symphoricarpos mollis Joseph P. Tracy 1948-8-15 18144 Humboldt Trinity Summit. On ridge 2 miles east of Grove's Prairie. 1524 Comment
  HSC58385  Symphyotrichum bracteolatum Terry Griswold 1979-7-25 10923 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon 1784 Comment
  UCD120749  Symphytum uplandicum T. C. Fuller 1961-9-28 7047 Humboldt Iverson prop., Arcata Bottoms, 0.5 mi. s. of the Mad River, 0.75 mi. w. of Hwy 101, 2 mi. n. of Arcata. Comment
  POM128331  Synthyris reniformis Jos. Burtt Davy, Walter C. Blasdale 1899-6-18 5617 Humboldt Bald Mtn, Northeast of Korbel. Comment
  RSA233223  Tanacetum camphoratum P. H. Raven 1962-8-31 18079 Humboldt Dry Lagoon State Park. Comment
  UC1196935  Taraxia ovata Joseph P. Tracy 1946-5-30 17545 Humboldt flat by old Strong's District School House (5 mi e of Carlotta) 60 Comment
  RSA254744  Tauschia kelloggii Thomas W. Nelson, James Nelson 1973-5-28 956 Humboldt McKeown Ranch north of Dinsmore. Comment
  HSC54651  Taxus brevifolia Overton, Butler 1979-7-25 9854 Humboldt Near Ammon Creek, close to the town of Willow Creek. 671 Comment
  SD61058  Taxus brevifolia Darley F. Howe 1964-8-7 Humboldt Mill Creek Road, 8.2 miles from Highway #96, Hoopa Valley 1064 Comment
  UC666679  Taxus brevifolia H. S. Reed 1938-7-27 192 Humboldt e fork Willow Creek Comment
  HSC32947  Tellima grandiflora Thomas W. Nelson, James Nelson 1973-5-28 960 Humboldt McKeown Ranch N of Dinsmore Comment
  HSC55865  Tellima grandiflora G. L. Clifton, Griswold 1979-7-25 10885 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1784 Comment
  CAS-BOT-BC447401  Tellima grandiflora H. D. Ripley; R. C. Barneby 1945-6-16 6824 Humboldt North of Harris Comment
  HSC100656  Tellima grandiflora Carl C. Marshall May 1886 190 Humboldt Damp places near streams. Comment
  HSC20428  Tellima grandiflora D. E. Anderson 1963-3-16 2382 Humboldt Scotia Bluffs Comment
  HSC20432  Tellima grandiflora Jack Rockwell 1962-4-24 24 Humboldt S bank Van Duzen River, E of Hwy. 101 9 Comment
  HSC45268  Tellima grandiflora M. Alcasas 1978-6-3 121 Humboldt Titlow Hill Rd. 0.8 mi. from Hwy. 299 1113 Comment
  HSC89548  Tellima grandiflora M. Roantree 1985-5-2 30 Humboldt E side of Trinidad Head. Comment
  UCD96769  Thalictrum fendleri var. polycarpum Joseph P. Tracy 1948-6-13 18037 Humboldt Larrabee Creek, 7 miles NW of Blocksburg. 304 Comment
  HSC103126  Thelypteris nevadensis M. Mesler 2009-7-19 810 Humboldt South Fork Mtn. Along FS 1, 11.8 miles from intersection with rd 4N12 1486 Comment
  UC1239774  Thelypteris nevadensis Joseph P. Tracy 1935-7-22 14124 Humboldt near Forks of Tish Tang-a Tang Creek Trinity Summit 1219 Comment
  HSC15097  Thermopsis macrophylla D. E. Anderson 1965-5-15 3692 Humboldt About 7 mi. N of Hoopa on Bloody Camp Prairie Rd. Comment
  UC673196  Thlaspi montanum var. montanum Lincoln Constance and Reed C. Rollins 1942-5-12 2887 Humboldt Klamath River 7 mi ne Weitchpec (Klamath-Siskiyou Region); , Klamath River 121 Comment
  CAS-BOT-BC81318  Thuja plicata Carl B. Wolf 1927-8-29 1192 Humboldt 7 mi. S. of Ferndale and Capetown, Bear River Ridge--Mt. Glen Comment
  NY17200  Thuja plicata I. L. Wiggins 1955-7-31 13594 Humboldt This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  POM299149  Thuja plicata H. E. Parks 1932-7-25 1139 Humboldt Camp 21 , Hammond Lumber Company, Trinidad 152 Comment
  SD56861  Thuja plicata Darley F. Howe 1963-8-7 Humboldt 30 miles west of west entrance to 6 Rivers north fork on Highway #299 185 Comment
  UC275476  Thuja plicata Joseph P. Tracy 1925-3-7 6931 Humboldt North Fork Eel River North Coast Region, North Fork Eel River (around Humboldt Bay) 60 Comment
Read comments
Jul 4 2018
  UC54780  Thuja plicata Joseph Burtt Davy and Walter C. Blasdale 1899-7-30 6193 Humboldt hills back of Arcata Comment
  JEPS54121  Thysanocarpus curvipes W. L. Jepson 1934-5-7 16702 Humboldt Bull Creek; Buckeye Prairie, Bull Creek Comment
  UC1198819  Thysanocarpus curvipes Joseph P. Tracy 1933-5-18 12188 Humboldt near Blue Lake (along Mad River); , near Blue Lake 15 Comment
  CAS-BOT-BC436936  Tiarella trifoliata var. unifoliata Eliz. Parsons Hawver 1915-6-1 s.n. Humboldt Carlotta Comment
  SBBG70435  Tiarella trifoliata var. unifoliata L. Rowntree 1931-7-23 Humboldt Carlotta Comment
  CAS-BOT-BC436913  Tiarella trifoliata var. unifoliata Ira L. Wiggins 1930-7-22 4594 a Humboldt Redwood Creek between Blue Lake and Willow Creek Comment
  POM274694  Tiarella trifoliata var. unifoliata Lyman Benson 1928-7-11 454 Humboldt Bull Creek Flat. Dyerville. Seaward N Coast mt range. Bull Creek, S. Fork Eel River. 61 Comment
  UC303041  Tofieldia occidentalis subsp. occidentalis Joseph P. Tracy 1926-6-27 7664 Humboldt Horse Mountain 1463 Comment
  HSC60125  Tolmiea diplomenziesii M. A. Baker 1978-5-20 556 Humboldt Hoopa Indian Reservation Comment
  CHSC24855  Tonella tenella A. D. Launer 1976-4-9 2 Humboldt On s bank of Conley Cr, 100 yds n of forks of Conley Cr, ca. 1.5 mi e of Church St. in Blocksburg. 487 Comment
  HSC97966  Torilis arvensis Cara Witte 2007-7-2 393 Humboldt Cold Spring. 1/2 mile south of Titlow Hill. 1406 Comment
  SACT002419  Torresia macrophylla V. Barnes 1959-1 Humboldt Comment
  SEINET244810 Image available Torreyochloa pallida var. pauciflora J. P. Tracy 1934-7-18 13429 Humboldt Grouse Mountain. 1524 Comment
  HSC3140  Toxicodendron diversilobum R. E. Thill 1965-5-1 26 Humboldt 0.25 mi. from Korbel on the Camp Bauer Rd. Comment
  HSC62837  Toxicodendron diversilobum M. Dean Griswold 1979-5-29 85 Humboldt In front of Masonic lodge on Bayside Rd. Comment
  HSC86487  Tracyina rostrata Tom Duebendorfer 1988-6-13 882 Humboldt N of Alderpoint, take Blocksburg Rd. N., 0.15 mi. E on Stewart Ranch Rd. 210 Comment
Read comments
May 18 2010
  UC1199328  Tracyina rostrata Joseph P. Tracy 1938-6-9 15975 Humboldt about 1 mi sw Alder Point (town) 304 Comment
  UC1257819  Tracyina rostrata R. Ornduff 1960-6-1 6185 Humboldt 3.3 mi n bridge across Eel Bridge (on road following Dobbyn Creek from Alder Point to Blockburg); Dobbyn Creek Comment
  CAS-BOT-BC399990  Trautvetteria caroliniensis Joseph P. Tracy 1937-7-2 15387 Humboldt Happy Camp Mountain. (In Trinity Summit Range, northeast of Hawkins Bar.) 1280 Comment
  HSC99835  Triantha occidentalis subsp. occidentalis T. Jimerson, J. Pageau 1979-8-10 728 Humboldt Near Tish Tang A Tang Ridge, close to the town of Hoopa 1464 Comment
  SEINET11114238  Trientalis borealis subsp. latifolia Unknown 1913-6-25 4341 . Humboldt Plants of Northern Coast Ranges of California Dinsmore's Ranch; in valley of Van Duzen River opposite Buck Mountain, Humboldt County Altitude 2500 ft. Comment
  HSC17936  Trientalis latifolia D. E. Anderson 1965-5-8 3653 Humboldt About 3 mi. N of Willow Creek along rd. on E side of Trinity River. Comment
  HSC70386  Trientalis latifolia M. A. Baker 1980-6-7 1859 Humboldt Near Ammon Creek 732 Comment
  BLMAR260  Trifolium Jennifer Anthony-Wheeler 1998-4-22 260 Humboldt King range, strawberry rock grazing allotment 280 Comment
  JEPS65706  Trifolium albopurpureum var. albopurpureum W. L. Jepson 1902-6-20 1899 Humboldt Ft. Seward Ranch Ridge 1219 Comment
  UC1197221  Trifolium albopurpureum var. olivaceum J. P. Tracy 1901-4-24 1040 Humboldt immediate vicinity Eureka 0 Comment
  UC16424  Trifolium barbigerum Harley P. Chandler May, 1901 1102 Humboldt Humboldt Bay; North Coast Ranges Comment
  BLMAR740  Trifolium barbigerum Jennifer Wheeler 2015-5-18 740 Humboldt King range, strawberry rock grazing allotment down windy point 243 Comment
  UC33569  Trifolium cyathiferum Chesnut and Drew 1888-7-10 Humboldt Jarnigan's Comment
  UC1223466  Trifolium dubium Joseph P. Tracy 1935-5-25 13830 Humboldt Blocksburg Comment
  HSC46037  Trifolium fucatum Catherine Chin 1978-5-5 56 Humboldt 17.4 mi. S of Ferndale on Mattole Rd. 91 Comment
  HSC15183  Trifolium gracilentum Norman H. Moe 1962-5-19 Humboldt Lanphere's Place Comment
  UC1130054  Trifolium hybridum H. S. Yates 1936-6-18 5724 Humboldt 2 mi s mouth of Littler River; Eureka quad 3 Comment
  UC495656  Trifolium longipes subsp. hansenii Joseph P. Tracy 1930-6-8 8726 Humboldt Northern Coast Ranges. Kneeland Prairie. 762 Comment
  HSC76223  Trifolium longipes subsp. oreganum Overton, Butler 1979-7-24 9763 Humboldt Near Black Rock, close to the town of Willow Creek. 1554 Comment
  JEPS80000  Trifolium longipes var. elmeri Joseph P. Tracy 1932-7-13 10525 Humboldt Corral Prairie Klamath Mtns, Trinity Summit 1524 Comment
  HSC71633  Trifolium microcephalum J. P. Smith 1973-5-26 6878 Humboldt Scotia Bluffs along the Eel River near Rio Dell Comment
  JEPS65965  Trifolium microcephalum W. L. Jepson 1902-6-20 1898 Humboldt Ft. Seward Ranch Ridge 1219 Comment
  UC1197539  Trifolium microcephalum Joseph P. Tracy 1910-6-5 3145 Humboldt Ocean Beach Northern Coast Ranges, Humboldt Bay Comment
  JEPS4174  Trifolium obtusiflorum Joseph P. Tracy 1932-5-22 10119 Humboldt between Miranda and Redway (South Fork Eel Rive); North Coast Ranges 91 Comment
  HSC12341  Trifolium pratense Steve Dorei 1970-10-26 113 Humboldt SE corner of Old Arcata Rd. and Freshwater Rd. Comment
  HSC23732  Trifolium repens Tim Baroni 1971-7-6 117 Humboldt 8 mi. S of Ferndale on Mattole Rd. Comment
  RSA259546  Trifolium subterraneum David Ferranti 1974-5-6 s.n. Humboldt 4360 1/2 Union Street Comment
  HSC45133  Trifolium variegatum R. Sutherland 1978-4-23 22 .23478 Humboldt 732 Comment
  UC1103451  Trifolium variegatum var. melananthum J. P. Tracy 1898-4 158 Humboldt Eureka vicinity Northern Coast Region 0 Comment
  UC1223533  Trifolium variegatum var. melananthum Joseph P. Tracy 1950-6-18 18845 Humboldt s Cape Mendocino (Davis Creek, on the beach) Comment
  UC1223543  Trifolium variegatum var. pauciflorum Joseph P. Tracy 1933-5-20 12241 Humboldt Petrolia Northern Coast Ranges, Mattole Valley Comment
  JEPS4144  Trifolium variegatum var. variegatum Joseph P. Tracy 1929-5-5 8570 Humboldt Miranda Northern Coast Ranges, South Fork Eel River 121 Comment
  UC1197561  Trifolium variegatum var. variegatum Joseph P. Tracy 1932-5-1 9881 Humboldt Garberville vicinity Northern Coast Ranges 121 Comment
  UC1103453  Trifolium variegatum var. variegatum J. P. Tracy 1901-5-21 1103 Humboldt Eureka vicinity 0 Comment
  UC1197563  Trifolium variegatum var. variegatum Joseph P. Tracy 1927-6-5 8103 Humboldt Valley of South Yager Creek Northern Coast Ranges 762 Comment
  UC1223528  Trifolium variegatum var. variegatum Joseph P. Tracy 1937-7-19 15460 Humboldt lower foothills nw slope; Buck Mtn 914 Comment
  UC1223541  Trifolium variegatum var. variegatum Joseph P. Tracy 1933-5-20 12253 Humboldt near Petrolia (hills betw town and Ocean) Comment
  JEPS4173  Trifolium willdenovii Joseph P. Tracy 1932-5-1 9866 Humboldt vicinity Garberville; Northern Coast Ranges 121 Comment
  UC249716  Trifolium willdenovii Joseph P. Tracy 1921-5-30 5490 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  CHSC68785  Trifolium wormskioldii Vernon Oswald 1997-6-5 8540 Humboldt Samoa Dunes Recreation Area at the south tip of the North Spit of Humboldt Bay. Along the road to the jetty. 6 Comment
  UC168972  Trifolium wormskioldii Joseph P. Tracy and Ernest B. Babcock 1912-5-11 3590 Humboldt near Hydesville Northern Coast Ranges 30 Comment
  UC201372  Trifolium wormskioldii Joseph P. Tracy 1918-7-3 4991 Humboldt Shelter Cove Northern Coast Ranges 15 Comment
  HSC36261  Triglochin maritima John Rehling 1974-8-20 23 Humboldt Big Lagoon Bog Comment
  UC527822  Triglochin maritima Ira L. Wiggins 1932-6-18 5868 Humboldt at mouth of Little River Little River Comment
  UC1197830  Trillium albidum Joseph P. Tracy 1911-5-7 3182 Humboldt Kneeland Prairie Northern Coast Ranges, Kneeland Prairie 762 Comment
  RSA21190  Trillium albidum Carl B. Wolf 1937-8-11 9149 Humboldt N Coast Range, Van Duzen River, 2.7 miles W of Dinsmores. 457 Comment
  UC1222529  Trillium albidum Joseph P. Tracy 1950-4-20 18615 Humboldt 2 mi. w. Dinsmosre's (lower foothills of n.w. slope of Buck Mt.); Buck Mt. 762 Comment
  CAS-BOT-BC133396  Trillium ovatum Marcus E. Jones 1924-4-26 s.n. Humboldt Scotia Comment
  HSC15702  Trillium ovatum K. P. St. John 1965-4-24 42 Humboldt Dry Lagoon State Park, 13 mi. N of Trinidad Comment
  HSC59702  Trillium ovatum Maralyn O'Meara 1973-6-12 204 Humboldt Above Clear Lake Comment
  HSC69786  Trillium ovatum R. Kalal 1979-5-5 37 Humboldt Fickle Hill Rd. 1.5 mi. E of 11th St. 183 Comment
  UC1537232  Trillium ovatum Gordon H. True Jr. 1936-2-26 329 Humboldt on Eel R. near Pepperwood; Eel. R. 91 Comment
  HSC24053  Trillium ovatum subsp. oettingeri J. O. Sawyer 1971-6-16 2387 Humboldt Lipps Camp 1433 Comment
  CAS-BOT-BC521251  Trillium rivale J. H. Thomas 1949-6-12 897 Humboldt 2 miles west of Matins Ferry on road to Orick. Comment
  CAS-BOT-BC521315  Trillium rivale Doris K. Kildale; L. B. Kildale 1930-5-24 9551 Humboldt Hoopa Valley 152 Comment
  HSC100565  Trillium sessile Carl C. Marshall Apr 1884 393 Humboldt Hoopa Valley. Comment
  SEINET12324840  Triodanis biflora H. P. Chandler 1901-1 1415 Humboldt North Coast Ranges, Klamath River 427 Comment
  HSC20852  Triphysaria eriantha subsp. eriantha S. J. Hawks 1965-5-14 56 Humboldt 1 mi. W of Mckinleyville, past the end of Murray Rd. Comment
  UC582572  Triphysaria pusilla Joseph P. Tracy 1931-4-26 9337 Humboldt Trinity River Valley at Willow Creek; Trinity River Valley at Willow Creek 152 Comment
  UC702568  Triphysaria pusilla C. C. and S. K. Harris 1942-6-18 1283 Humboldt 1 mi n and 3 mi w Chalk Mountain; n and w of Chalk Mountain 665 Comment
  JEPS13344  Triphysaria versicolor subsp. faucibarbata H. E. and S. T. Parks May, 1930 750 Humboldt near Bridgeville Comment
  UC1222439  Triphysaria versicolor subsp. versicolor Joseph P. Tracy 1942-5-29 17089 Humboldt Eureka 6 Comment
  UC526692  Trisetum canescens Joseph P. Tracy 1932-7-16 10614 Humboldt Corral Prairie; Klamath Mountains 1524 Comment
  UCD93900  Trisetum cernuum H. E. Parks; S. T. Parks 1952-6-1 7551 Humboldt Spruce Cove, Trinidad. 60 Comment
  HSC98366  Triteleia bridgesii T. Jimerson, J. Pageau 1979-5-24 472 Humboldt Near Orleans 226 Comment
  UC15030  Triteleia bridgesii Mrs. M. H. Manning 1901-5-22 1 Humboldt Hupa Valley Comment
  HSC32556  Triteleia hyacinthina Thomas W. Nelson 1973-7-10 1034 Humboldt Humboldt/Trinity County line, Mt. Lassic (Signal Peak) 1790 Comment
  HSC91592  Triteleia laxa E. Mackey 1986-6-16 Humboldt Patrick's Point State Park, near Ceremonial Rock Comment
  HSC97626  Triteleia laxa Cara Witte 2007-6-19 300 Humboldt Cold Spring. 1/2 mile south of Titlow Hill. 1393 Comment
  CAS-BOT-BC526349  Triteleia laxa Ira L. Wiggins 1932-6-18 5876 Humboldt Mouth of Little River Comment
  HSC23715  Triteleia laxa Tim Baroni 1971-6-25 36 Humboldt 8 mi. E of Petrolia Comment
  UC1222687  Triteleia laxa Joseph P. Tracy 1950-6-8 18755 Humboldt windswept flat s Cape Mendocino; Davis Creek Mouth Comment
  CAS-BOT-BC85897  Tsuga heterophylla Doris K. Kildale 1927-4-10 3078 Humboldt Prairie Creek in deep woods Comment
  HSC39045  Tsuga heterophylla Linda M. Barker 1976-6-14 1589 Humboldt 3 mi. W of Arcata Comment
  UC1585364  Tsuga heterophylla R. Raiche, K. Zadnik, and H. Forbes 1989-10-2 Humboldt e of Arcata (on Hwy 299, 28 km e of Hwy 101); Hwy 299 360 Comment
  UC484080  Tsuga heterophylla Carl B. Wolf 1930-10-25 1763 Humboldt 12 mi above Blue Lake (along Blue Lake to Willow Creek Road (Lord Ellis Road)) 304 Comment
  CAS-BOT-BC91108  Umbellularia californica Doris K. Kildale 1927-8-16 2515 Humboldt Upper Willow Creek Flat - Trinity River Valley. 152 Comment
  UC128871  Uropappus lindleyi Harley P. Chandler Jun 1901 1508 Humboldt Klamath River North Coast Ranges, Klamath River 426 Comment
  HSC24098  Vaccinium cespitosum J. O. Sawyer 1971-6-14 2379 Humboldt E Fork of Horse Linto Creek at Grizzly Camp. 1341 Comment
  HSC55151  Vaccinium cespitosum G. L. Clifton, Griswold 1979-8-1 12091 Humboldt Near N Trinity Mtn., close to the town of Hoopa. 1798 Comment
  CAS-BOT-BC199315  Vaccinium ovatum A. A. Heller 1937-6-12 15917 Humboldt Bishop Pine Lodge, 3 miles north of Trinidad Comment
  CAS-BOT-BC199326  Vaccinium ovatum H. E. Parks; S. T. Parks 1937-4-1 5638 Humboldt Spruce Cove, Trinidad Comment
  CHSC67763  Vaccinium ovatum Vernon H. Oswald 1997-2-12 8307 Humboldt North Coast of Calif. South end of Trinidad State Beach, town of Trinidad. 30 Comment
  HSC100479  Vaccinium ovatum Carl C. Marshall Mar 1886 140 Humboldt Near coast everywhere. Comment
  HSC12435  Vaccinium ovatum Gary J. Stebbins 1970-2-21 10 Humboldt Patricks Point State Park 38 Comment
  HSC7906  Vaccinium ovatum J. W. Johnson 1962-3-25 1418 Humboldt Arcata, along section line, Christenson Farm, Samoa Peninsula Comment
  UC1173686  Vaccinium ovatum Joseph P. Tracy 1939-5-30 16304 Humboldt Dinsmore's, along Van Duzen River Van Duzen River 731 Comment
  UCD166884  Vaccinium ovatum Colleen Rossier 2016-9-16 2 Humboldt Approximately 100 yards above Red Cap Road. Across from gravel entrance to old road, plot Red Cap #1. 264 Comment
  UCD166887  Vaccinium ovatum Colleen Rossier 2016-9-16 5 Humboldt In vicinity of Rosaleno Creek, plot Rosaleno #1. 601 Comment
  RSA303471  Vaccinium parvifolium J. R. Shevock 1972-3-26 1470 Humboldt Along Hwy 299. 366 Comment
  RSA114992  Valeriana sitchensis subsp. scouleri E. K. Balls, Lee W. Lenz 1955-5-15 20732 Humboldt 6.4 miles SW of Willow Creek along US Hwy 299 to Arcata. 457 Comment
  SD73187  Vancouveria hexandra Darley F. Howe 1969-6-4 4630 Humboldt 14.6 miles east of Alton on Highway #36 89 Comment
  HSC12212  Vancouveria hexandra Gary J. Stebbins 1970-5-17 82 Humboldt Along Jolly Giant Creek up from HSU dorm parking lot 1.1 mi. 70 Comment
  RSA189781  Vancouveria hexandra Noel Holmgren, James L. Reveal 1966-6-8 2659 Humboldt Coast Range, east of Arcata, 1.5 miles south of Korbel. 274 Comment
  CAS-BOT-BC76083  Vancouveria planipetala Doris K. Kildale 1926-5-2 1861 Humboldt Willow Creek Flat. 152 Comment
  HSC44512  Vancouveria planipetala Brad Klipfel 1973-7-1 122 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC67545  Vancouveria planipetala J. P. Smith, Steve Selva 1970-6-14 3835 Humboldt Along Hwy. 96 at Whitmore Creek. 152 Comment
  RSA24190  Vancouveria planipetala C. B. Wolf 1941-3-2 9984 Humboldt N. Coast Range. Bull Creek-Petrolia Road. 12 mi. W. of Redwood Highway. 457 Comment
  SEINET3992208  Veratrum insolitum Unknown 1948-9-12 18213 Humboldt 1 mi. W. of Box Camp 1372 Comment
  UC1225852  Veratrum insolitum Joseph P. Tracy 1948-8-15 18120 Humboldt on Ridge 2 mi e Grove's Prairie; Trinity Summit 1524 Comment
  UC582591  Verbascum blattaria Joseph P. Tracy 1937-6-26 15366 Humboldt Trinity River Valley at Willow Creek; Trinity River Valley at Willow Creek 152 Comment
  JEPS11194  Verbascum thapsus W. L. Jepson 1936-8-12 17873 Humboldt South Fork Eel River Phillipsville; South Fork Eel River Comment
  CDA40702  Verbena lasiostachys var. lasiostachys B. F. Kemp 1958-7-5 835 -58 Humboldt Knight Ranch, 4 miles north of Willow Creek. 0 Comment
  SD88369  Veronica americana Darley F. Howe 1972-5-7 Humboldt Trinidad Comment
  HSC69633  Veronica americana R. Kalal 1980-6-1 26 Humboldt 0.25 mi. N of Hwy. 299, at Essex turnoff 15 Comment
  HSC21201  Veronica peregrina P. Markle 1962-5-16 41 Humboldt Near City of Arcata Reservoir on road 61 Comment
  HSC21208  Veronica persica J. W. Johnson 1962-4-8 1207 Humboldt Arcata, Mad River Co. Park Comment
  UC501613  Veronica scutellata Frank W. Peirson 1923-7-11 3838 Humboldt 7 mi n of Arcata Comment
  HSC56097  Veronica serpyllifolia subsp. humifusa G. L. Clifton 1979-7-31 11807 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  UC147901  Veronica serpyllifolia subsp. humifusa Joseph P. Tracy 1910-4-17 3115 Humboldt Valley of Elk River (region about Humboldt Bay); Northern Coast Region, Humboldt Bay, Elk River 0 Comment
  HSC82109  Vicia americana var. americana Thomas W. Nelson, Jane P. Nelson 1980-5-25 5252 Humboldt Along road from Dinsmore to Anderson Crossing, McKeown Ranch Rd. 100 m N of junction of road to Hindley Cabin 823 Comment
  UC1197468  Vicia americana var. americana Joseph P. Tracy 1914-7-12 4580 Humboldt near Hookton; Northern Coast Region, Humboldt Bay Region 0 Comment
  UC160967  Vicia americana var. americana Mrs. M. H. Manning May 1902 Humboldt Hupa Comment
  POM68420  Vicia gigantea Marcus E. Jones 1924-4-26 s.n. Humboldt Eureka. Comment
  UCD108675  Vicia hirsuta Linda M. Barker 1976-5-13 1479 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  HSC48379  Vicia hirsuta Mark Flippo 1978-4-18 38 Humboldt Mckinleyville, Hill Top Rd. Comment
  JEPS76829  Vicia sativa subsp. nigra L. R. Heckard with T. I. Chuang and R. C. Bacigalupi 1978-5-27 4807 Humboldt about 1.2 mi n Eureka bridge (Samoa peninsula) Comment
  HSC15273  Vicia sativa subsp. sativa W. F. Nickel 1965-5-12 Humboldt On H.S.C. campus behind the Biological Sciences building Comment
  HSC71472  Vicia tetrasperma J. P. Smith, J. O. Sawyer 1973-5-12 6665 Humboldt 1.0 mi. from Redwood Creek on Hoopa Rd. Comment
  RSA170273  Vicia tetrasperma Joseph P. Tracy 1916-5-16 4688 Humboldt Stitz Creek. Along Eel River from South Fork to Scotia. 61 Comment
  RSA8438  Vicia villosa I. L. Wiggins 1932-7-7 5880 Humboldt Near Samoa, on the landward side of the sand dunes. Comment
  HSC21758  Viola adunca F. B. Plett 1963-3-9 5 Humboldt 1.5 mi. N of Trinidad along old Hwy. 101 Comment
  CAS-BOT-BC263948  Viola adunca L. B. Kildale 1927-7-23 3788 Humboldt Hoaglin Lake near [Lass---s] Peaks 1524 Comment
  RSA249427  Viola beckwithii D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5593 Humboldt Mount Lassic and 2 smaller peaks to immediate east. 1768 Comment
  HSC97552  Viola cuneata Cara Witte 2007-6-1 167 Humboldt Horse Mountain Botanical Area. Along Forest Service Road 6N38. 1382 Comment
  HSC45582  Viola cuneata Diane L. Reed 1978-5-27 124 Humboldt Horse Mtn., Titlow Hill Rd., 3.4 mi. from junction with S.R. 299 Comment
  HSC102037  Viola glabella M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-13 940 Humboldt Forest edge surrounding Patterson Meadows 1566 Comment
  CAS-BOT-BC536496  Viola glabella A. M. Vollmer; L. Beane 1951-6-8 134 Humboldt Grizzly Camp, State Hwy 36 Comment
  HSC21793  Viola glabella R. A. Rasp 1964-5-6 41 Humboldt Butler Valley, 11 mi. S of Korbel Comment
  RSA24186  Viola glabella Carl B. Wolf 1941-3-1 9980 Humboldt 0.2 mi NE of Strongs Station (on the Van Duzen River) on rd to Yaeger. 61 Comment
  HSC96267  Viola hallii Eric Schori, Kazuyuki Ishimaru 2005-6-10 9 Humboldt 7.4 mi. S of Rt. 299 on Titlow Hill Rd.; Coldspring Campground spur road 1370 Comment
  UC1103558  Viola macloskeyi Joseph P. Tracy 1947-6-26 17744 Humboldt near McKay Camp; South Fork Mountain 1676 Comment
  UC164807  Viola palustris Joseph P. Tracy 1904-7-31 2126 Humboldt Eureka; Northern Coast Ranges, Eureka 0 Comment
  UC183609  Viola praemorsa subsp. linguifolia Joseph P. Tracy 1913-6-17 4159 Humboldt Buck Mountain, near the summit Buck Mountain; Northern Coast Ranges, Buck Mountain 1524 Comment
  RSA168956  Viola praemorsa subsp. praemorsa Joseph P. Tracy 1950-4-20 18607 Humboldt Dinsmore's, along Van Duzen River, opposite Buck Mountain. 762 Comment
  HSC44318  Viola sempervirens J. Walker 1977-4-23 11 Humboldt 2.5 mi. S of Shelter Cove Rd., S Fork of Bear Creek at Wailaki Campground 561 Comment
  CAS-BOT-BC203046  Vitis californica Doris K. Kildale 1926-5-2 1864 Humboldt Willow Creek Flat - Trinity River tributary 152 Comment
  CAS-BOT-BC203051  Vitis californica Doris K. Kildale 1926-7-25 2431 Humboldt Briceland Bridge 1/2 mi. west of Garberville Comment
  RSA121893  Vitis californica H. S. Yates 1936-6-24 5871 Humboldt 2 miles E of Bear Butte. Comment
  POM92419  Vitis californica L. R. Abrams 1922-6-25 8220 Humboldt 6 miles N of Garberville Comment
  UC1145198  Vulpia microstachys var. ciliata Joseph P. Tracy 1939-5-14 16295 Humboldt opposite Buck Mountain (Dinsmore's, flats along Van Duzen River); Van Duzen River 762 Comment
  SEINET3132612  Vulpia microstachys var. microstachys D. E. Anderson, JO Sawyer, JP Smith Jr. 1970-5-10 5056 Humboldt Along road from Redwood Creek to Hoopa, ca. 1-3 mi. W of Hoopa Comment
  CAS-BOT-BC184233  Vulpia microstachys var. pauciflora Joseph P. Tracy 1926-5-2 7440 Humboldt Trinity River Valley, near the South Fork 182 Comment
  HSC37935  Vulpia myuros Peter Sorensen 1976-6-4 Humboldt N Spit Comment
  HSC70921  Vulpia myuros R. York 1980-5-18 570 Humboldt Near Black Mountain 792 Comment
  HSC9923  Vulpia myuros R. D. Modafferi 1965-5-13 72 Humboldt 1.6 mi. N of Trinidad on Trinity St. 305 Comment
  HSC9943  Vulpia myuros Gene S. Van Horn 1962-5-10 14 Humboldt H.S.U campus, between Administration Building and College Commons, Arcata. 46 Comment
  UCD94718  Vulpia myuros A. A. Beetle; G. L. Stebbins Jr. 1942-6-1 3456 Humboldt 2 miles north of Orleans. Klamath River. Comment
  UCD94899  Vulpia myuros A. H. Murphy 1951-5-15 35 Humboldt Foster Ranch, 3 miles west of Miranda. Comment
  SEINET244937 Image available Vulpia myuros var. myuros J. P. Tracy 1914-1 4432 Humboldt Fort Seward. 122 Comment
  HSC38478  Whipplea modesta D. E. Anderson, J. P. Smith 1971-6-18 1053 Humboldt 1 mi. W of Lord Ellis Summit Comment
  HSC70379  Whipplea modesta M. A. Baker 1980-6-7 1796 Humboldt Near Brush Mtn. 287 Comment
  SD51271  Whipplea modesta Darley F. Howe 1961-8-2 3121 Humboldt 7.7 miles east of Orick on Bald Mountain Road. 609 Comment
  JEPS32069  Wyethia angustifolia Joseph P. Tracy 1936-6-17 14947 Humboldt nw slope Buck Mountain 762 Comment
  UC582642  Wyethia angustifolia Joseph P. Tracy 1934-6-14 13217 Humboldt in open forest in serpentine belt Horse Mountain 1432 Comment
  UC302182  Wyethia longicaulis Joseph P. Tracy 1926-6-20 7658 Humboldt Horse Mountain Northern Coast Ranges 1371 Comment
  SEINET11799554  Wyethia longicaulis J. P. Tracy 1950-1 18942 Humboldt near Clear Lake where Friday Ridge Rd comes to top of Grouse Mountain Ridge Comment
  HSC76424  Xerophyllum tenax Denis Kearns 1981-6-24 29 Humboldt Near Cedar Camp 1219 Comment
  HSC81491  Zeltnera muehlenbergii Thomas W. Nelson, Jane P. Nelson 1980-8-12 6239 Humboldt Logging roads S of Lundbar Hills 61 Comment
  HSC74387  Zigadenus micranthus M. A. Baker 1980-6-28 2505 Humboldt Near Mad River Buttes 1445 Comment
  CAS-BOT-BC532734  Zigadenus micranthus H. C. Cantelow 1936-5-17 1355 Humboldt 11 miles east of Orick, grade to Yreka Comment
  CAS-BOT-BC532738  Zigadenus micranthus Harold E. Parks; Joseph P. Tracy 1934-6-27 11041 Humboldt Horse Mountain 1432 Comment
  RSA168946  Zigadenus micranthus Joseph P. Tracy 1950-6-25 18882 Humboldt Burr Valley. On NW slope of Buck Mtn. 1067 Comment
  UC249566  Zigadenus micranthus var. micranthus Joseph P. Tracy 1921-5-30 5484 Humboldt Kneeland Prairie Northern Coast Ranges, Kneeland Prairie 762 Comment
  UC275516  Zigadenus micranthus var. micranthus Joseph P. Tracy 1924-7-4 6521 Humboldt Valley South Yager Creek; Northern Coast Ranges, Valley of South Yager Creek 762 Comment



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