Search Results — 2000 specimen records retrieved (1348 records with coordinates)
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(For large data reqests, please contact Jason Alexander, jason_alexander@berkeley.edu.)

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

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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  HSC55267  Abies concolor Overton, Butler 1979-8-2 12634 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  HSC73545  Abies concolor Gail Newton 1980-7-14 1470 Humboldt Near Last Chance Ridge. 1219 Comment
  HSC37927  Abronia latifolia Peter Sorensen 1976-5-28 Humboldt N spit Comment
  RSA0025086  Abronia latifolia T. S. Elias, Barbara A. Elias 1987-8-24 10621 Humboldt Prairie Creek Redwoods State Park, Gold Bluffs Beach. Comment
  RSA0025092  Abronia latifolia Mildred E. Mathias 1929-8-4 769 Humboldt Along the coast near Eureka. Comment
  SEINET8215832  Abronia umbellata H. E. Parks 1941-1 242112 Humboldt Little River. Comment
  UC502939  Acer glabrum var. glabrum Joseph P. Tracy 1932-7-12 10475 Humboldt head of Brett Hole Klamath Mountains, Trinity Summit 1828 Comment
  CAS-BOT-BC331589  Acer macrophyllum Doris K. Kildale 1927-5-1 3117 Humboldt Blocksburg 518 Comment
  HSC2815  Acer macrophyllum J. Sandborg, F. Sandborg May 1968 2 Humboldt Bluff Creek near Notice Creek, above Notice Creek 793 Comment
Read comments
Nov 1 2013
  HSC48766  Achillea millefolium Brad Klipfel 1973-6-10 102 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  JEPS37080  Achillea millefolium W. L. Jepson 1932-7-30 16460 Humboldt Bull Creek Comment
  SBBG65817  Achillea millefolium R. Hartwell 1938-8-6 120 Humboldt near Eureka Comment
  UC1192145  Achillea millefolium Malcolm A. Nobs and S. Galen Smith 1949-8-3 1189 Humboldt southern outskirts of Eureka Comment
  CAS-BOT-BC28578  Achillea millefolium J. Clausen 1949-6-23 2159 Humboldt Benbow, 2 miles S of Garberville. Comment
  CAS-BOT-BC28581  Achillea millefolium David D. Keck 1949-7-12 6326 Humboldt 4 miles south of Scotia (halfway between Scotia and Pepperwood). Comment
  HSC90327  Achillea millefolium Jean Hanson 1980-6-22 105 Humboldt Indian (Gunther) Island, Humboldt Bay, City of Eureka, W end of island Comment
  HSC97953  Achillea millefolium Cara Witte 2007-6-21 320 Humboldt Board Camp Mountain. Forest Service Road 4N38. 1419 Comment
  UC1222922  Achillea millefolium Joseph P. Tracy 1950-5-30 18712 Humboldt at Willow Creek; Trinity River Valley 152 Comment
  UC30137  Achlys triphylla subsp. triphylla W. C. Blasdale 1896-6-6 Humboldt Fitzgerald's Comment
  UC1152042  Achnatherum lemmonii Joseph P. Tracy 1951-6-26 19598 Humboldt n side of Board Camp Mountain at extreme head of Redwood Creek Board Camp Mountain, Redwood Creek Comment
  UC180228  Achnatherum lemmonii Joseph P. Tracy 1913-5-4 4047 Humboldt Kneeland Prairie North Coast Ranges, Kneeland Prairie 762 Comment
  UC1541542  Achnatherum lettermanii Harold E. Parks July 1934 4926 Humboldt Grouse Mountain 1371 Comment
  UC212861  Achnatherum occidentale subsp. californicum Joseph P. Tracy 1919-9-23 5285 Humboldt summit of ridge Northern Coast Ranges, Trinity Summit 1828 Comment
  UCSB30617  Acmispon brachycarpus Edwards, David 1974-8-1 Humboldt Near W. bank of Mad River north of its junction with Puter Creek, ca. 300 yds. N. of fish hatchery, ca. 2 mi. SW. of Korbel 3 Comment
  CAS-BOT-BC391411  Aconitum columbianum subsp. columbianum Joseph P. Tracy 1937-8-12 15661 Humboldt Snow Camp 1402 Comment
  HSC55866  Aconitum columbianum subsp. viviparum G. L. Clifton, Griswold 1979-7-25 10888 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1784 Comment
  HSC73766  Aconogonon davisiae Gail Newton 1980-7-24 1772 Humboldt Near Somes Mtn. 1615 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
  HSC37338  Adenocaulon bicolor Gary S. Lester, Roger L. Yearout, Judith G. Dickson 1974-7-24 486 Humboldt Along Lost Man Creek. 38 Comment
  CAS-BOT-BC29865  Adenocaulon bicolor Huron Herbert Smith 1911-6-20 3910 Humboldt unspecified Comment
  CAS-BOT-BC62289  Adiantum aleuticum T. G. W. 1924-7-1 s.n. Humboldt Arcata Comment
  HSC58330  Agastache urticifolia Overton, Butler 1979-8-2 12630 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  CAS-BOT-BC127286  Agrostis exarata W. R. Dudley 1899-1-1 s.n. Humboldt Arcata. Comment
  CAS-BOT-BC127323  Agrostis exarata Doris K. Kildale 1926-6-27 2195 Humboldt McClellan Mountain. 822 Comment
  POM126173  Agrostis exarata Joseph P. Tracy 1904-7-31 2127 Humboldt Eureka. 0 Comment
  RSA53834  Agrostis exarata Henry M. Pollard 1946-8-13 s.n. Humboldt Pond near Harley Place. Orleans region. Comment
  UC526895  Agrostis exarata Joseph P. Tracy 1933-7-20 12809 Humboldt along river near Blue Lake; Mad River 15 Comment
  UC33755  Agrostis hallii Joseph Burtt Davy and Walter C. Blasdale 1899-7-30 6175 Humboldt near Ferndale Comment
  UCD52685  Agrostis hallii H. S. Yates 1936-6-18 5728 Humboldt Near mouth of Litter River. 4 Comment
  CAS-BOT-BC139452  Agrostis hyemalis Doris K. Kildale 1926-9-5 2624 Humboldt Lasseck's Peaks. Near Canal Camp. 1661 Comment
  HSC96541  Agrostis pallens Gordon Leppig 1997-8-3 645 Humboldt Big Lagoon County Park, Big Lagoon Bog 3 Comment
  RSA126092  Agrostis stolonifera Joseph P. Tracy 1902-7-4 1758 Humboldt [Unspecified] Comment
  HSC22532  Aira caryophyllea Dennis Anderson, J. P. Smith 1970-5-21 5085 Humboldt Scotia Bluffs, along N side of Eel River, in the vicinity of French Gulch Comment
  RSA183535  Aira caryophyllea G. Bos 1965-5-15 256 Humboldt 8 miles west of Berry Summit along U.S. 299. 762 Comment
  UCD55739  Aira caryophyllea A. A. Beetle; G. L. Stebbins 1942-6-3 3587 Humboldt Near Garberville, 1.4 miles on road to Harris. Comment
Read comments
Jan 21 2009
  SEINET201011  Aira praecox J. P. Tracy 1932-5-16 10103 Humboldt Near Samoa on Humboldt Bay north coast region 6 Comment
  SEINET3917480  Aira praecox Paul Dryden 1975-5-24 203 Humboldt Samoa Dunes. Dunes off Samoa Blvd. across from the boat landing.; 0 Comment
  HSC2924  Allium amplectens J. P. Tracy 1926-5-15 7483 Humboldt Kneeland Prairie Comment
  UC275537  Allium amplectens Joseph P. Tracy 1923-6-24 6348 Humboldt Murphy Ridge on Bald Mt. Northern Coast Ranges, Bald Mt., Murphy Ridge 1066 Comment
  HSC99113  Allium bolanderi var. bolanderi Cara Witte 2007-6-7 232 Humboldt White Oak Opening. Along Kinsey Ridge. 1238 Comment
  HSC57406  Allium falcifolium G. L. Clifton, Griswold 1979-7-26 10158 Humboldt Near Salmon Mtn. 2058 Comment
  CAS-BOT-BC135847  Allium hoffmanii Thomas W. Nelson; James L. Nelson 1973-5-30 977 Humboldt Humboldt-Trinity Co. line, Mt. Lassic (Signal Peak) 1789 Comment
  HSC65952  Allium hoffmanii M. A. Baker 1980-7-11 2799 Humboldt Near Red Mtn. 1433 Comment
  NY247883  Allium stenanthum V. K. Chesnut 1888-7-19 s.n. Humboldt Pilot Ridge Comment
  POM203239  Allium unifolium M. S. Jussel 1931-5-2 s.n. Humboldt 6 miles from Garberville Comment
  HSC73724  Alnus incana subsp. tenuifolia M. A. Baker 1980-7-19 3040 Humboldt Near Bret Hole. 1814 Comment
  CAS-BOT-BC170949  Alnus rhombifolia Lyman Benson 1929-7-19 1878 Humboldt Mouth of Matole [Mattole] River Comment
  SEINET12027585  Alnus rhombifolia J. P. Tracy 1950-1 19375 Humboldt Klamath River, near Slate Creek, below Orleans 8 mi 122 Comment
  CAS-BOT-BC169538  Alnus rubra Carl B. Wolf 1927-8-22 796 Humboldt Big Lagoon Comment
  HSC65138  Alnus rubra J. P. Smith 1971-10-9 4986 Humboldt Banks and flood plain of the Mad River above the fish hatchery. Comment
  SBBG89139  Alnus rubra A. Keedy 1988-9-28 15 Humboldt Alder Grove Rd near Hwy 299, N of Arcata Comment
  UCD110034  Alnus rubra Linda M. Barker 1976-6-14 1602 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  SEINET12031409  Alnus rubra F. H. Utech, Sato, T.; Ohara, M. 1990-1 90 -301 Humboldt Six Rivers National Forest, 0.5 mi S of CA 199 on French Hill Road (USFS Road 411) 150 Comment
  HSC58073  Alnus viridis subsp. sinuata G. L. Clifton, Griswold 1979-8-1 11965 Humboldt Near Mill Creek Lakes, close to the town of Hoopa 1707 Comment
  UC503100  Alnus viridis subsp. sinuata Joseph P. Tracy Jul 16 1930-Jul 19 1930 9080 Humboldt near McKay Camp; Northern Coast Ranges, South Fork Mountain 1676 Comment
  HSC8887  Alopecurus geniculatus Paul Shields 1955-10-7 Humboldt Essex Pond, near Blue Lake Comment
  SACT000308  Alopecurus geniculatus Malcolm Nobs, S. Smith 1949-8-3 Humboldt located on borders of irrigation ditch, 1 mile south of fields landing Comment
  RSA26851  Ambrosia chamissonis I. L. Wiggins 1940-7-10 9486 Humboldt Big Lagoon. Comment
  HSC70381  Amelanchier alnifolia M. A. Baker 1980-6-7 1794 Humboldt Near Brush Mtn. 1128 Comment
  HSC71166  Amelanchier alnifolia Thomas W. Nelson 1977-5-30 3412 Humboldt Base of Eight Mile Ridge upstream from Anderson's Ford. 701 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
  HSC48400  Amelanchier alnifolia var. semiintegrifolia Brad Klipfel 1973-6-10 87 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  CAS-BOT-BC143018  Amelanchier utahensis Henry M. Pollard 1946-8-28 s.n. Humboldt Near summit of Orleans Mt. 1828 Comment
  RSA385128  Ammophila arenaria Edith A. Purer 1932-7-27 4157 Humboldt Samoa sand dunes. Comment
  UC54750 Image available Amsinckia intermedia Mrs. M. H. Manning 1901-1 156 Humboldt near Hupa; ; near Hupa Comment
  HSC17837  Anagallis arvensis A. E. Inman 1962-5-25 Humboldt Mad River, Lindsey Creek Jct., 200 yards W of Lindsey Creek Comment
  HSC32503  Anagallis arvensis David Johnson 1974-5-2 73 Humboldt Mad River Co. Park, mouth of the Mad River; by the parking lot Comment
  HSC68320  Anagallis arvensis J. P. Smith 1973-5-26 6817 Humboldt Scotia Bluffs along the Eel River near Rio Dell Comment
  HSC37912  Anaphalis margaritacea Peter Sorensen 1976-7-14 Humboldt Woodley Island Comment
  JEPS20544  Anaphalis margaritacea Chesnut and Drew 1888-8-8 Humboldt Arcata Comment
  UC1125515  Anaphalis margaritacea H. L. Person 1931-7-30 Humboldt Fieldbrook; Eureka Quad. Comment
  HSC48847  Anemone deltoidea Brad Klipfel 1973-7-15 206 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  CAS-BOT-BC391778  Anemone deltoidea Lillian Mott 1976-6-29 15 LM75 Humboldt Lady Bird Johnson Redwood Grove, Prairie Creek 60 Comment
  HSC59031  Anemone deltoidea M. A. Baker 1979-6-8 803 Humboldt Ladybird Johnson Memorial Grove, right of trail just after bridge over rd. Comment
  HSC99355  Anemone oregana K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-6-21 4 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  HSC71322  Angelica genuflexa J. M. DiTomaso 1980-10-1 1996 Humboldt S Eureka limits across from Sunset Mortuary Comment
  CDA38195  Angelica lucida Gordon Leppig 1998-6-18 839 Humboldt Route 101 on Humboldt Bay at mouth of Jacoby Creek. Comment
  HSC71326  Angelica lucida J. M. DiTomaso 1980-6-21 1607 Humboldt Clam beach. Comment
  UC1103414  Angelica lucida Joseph P. Tracy 1914-10-4 4632 Humboldt near Hookton (at s end of Humboldt Bay); Northern Coast Region, Humboldt Bay 0 Comment
  UC642266  Angelica tomentosa Joseph P. Tracy 1939-8-16 16410 Humboldt Horse Mountain 1432 Comment
  OBI9037  Angelica tomentosa Tracey Call, Viola Call 1966-8-1 2518 Humboldt 2.5 mi up Three Creek Rd. from Willows 427 Comment
  UCD127180  Angelica tomentosa Joseph DiTomaso 1980-8-15 1864 Humboldt 5 miles west of Willow Creek at 34.4 mile road mark on Highway 299. Comment
  HSC47954  Antennaria luzuloides Brad Klipfel 1974-7-23 448 Humboldt Horse Mountain Comment
  HSC39226  Antennaria suffrutescens D. E. Anderson, J. P. Smith 1971-7-6 1287 Humboldt Horse Mtn. Comment
  UC302185  Antennaria suffrutescens Joseph P. Tracy 1926-6-20 7626 Humboldt Horse Mountain 1524 Comment
  HSC103785  Anthemis cotula M. Mesler, K. A. Wayman 2015-8-4 1646 Humboldt Trail between Mill Creek Lakes trail head and Andy's Camp 1633 Comment
  UCD56135  Anthoxanthum aristatum W. R. Powell 1960-7-9 s.n. Humboldt 10 miles SE of Orick (direct line), Dolason Hill Prairie of the Bald Hills, along Orick-Weitchpec Road. 731 Comment
  HSC39951  Anthoxanthum occidentale Linda M. Barker 1976-2-22 1312 Humboldt 3 mi. W of Arcata Comment
  HSC49816  Anthoxanthum occidentale R. York 1979-4-21 243 Humboldt Behind the town of Korbel Comment
  UCD85343  Anthoxanthum occidentale Linda M. Barker 1976-2-22 1312 Humboldt Coast forest and dunes 3 miles west of Arcata. Comment
  UCD56641  Anthoxanthum odoratum G. Douglas Barbe; T. C. Fuller 1974-6-17 1848 Humboldt North Coast Rages, Eureka, at 707 'L' Street, behind CSAA (California State Automobile Assoc.) district office. Comment
  CDA20237  Antirrhinum vexillo-calyculatum subsp. breweri Humboldt Ag Comm 2003-11-18 PDR 1417772 Humboldt North Coast Ranges; Hwy 101 at MM 2.75 near Garberville. 0 Comment
  RSA54142  Antirrhinum vexillocalyculatum subsp. breweri H. M. Pollard 1945-8-31 s.n. Humboldt Orleans to Somes Bar, east side of Klamath River. Comment
  JEPS45613  Aphanes occidentalis W. L. Jepson 1921-8-7 9337 a Humboldt Stone Lagoon; Humboldt Coast Comment
  UC1198740  Aphanes occidentalis Joseph P. Tracy 1918-4-12 4876 Humboldt near Fish's Mill Creek (Dows Prairie); Northern Coast Ranges 30 Comment
  SDSU9935  Aquilegia formosa D. F. Howe 1962-5-21 3299 Humboldt 16.4 miles north of Garberville on #101. 61 Comment
  HSC45442  Aquilegia formosa var. formosa M. Alcasas 1978-5-6 62 Humboldt Maple Creek Rd. 1.5 mi. W of Mad River crossing 161 Comment
  HSC45491  Aquilegia formosa var. formosa Maralyn O'Meara 1972-6-8 102 Humboldt Along Bald Hills Rd. 18 mi. E of junction with Hwy. 101 Comment
  HSC55329  Aquilegia formosa var. truncata Griswold, Butler 1979-7-12 7169 Humboldt Near Groves Prairie, close to the town of Willow Creek. 1256 Comment
  HSC56245  Aquilegia formosa var. truncata Walter Overton 1979-8-1 12348 Humboldt Near Packsaddle Ridge, close to the town of Hoopa 1341 Comment
  HSC56326  Aquilegia formosa var. truncata Overton, Butler 1979-8-2 12669 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  RSA0126138  Arabis divaricarpa var. interposita Joseph P. Tracy 1932-7-11 10396 Humboldt Klamath Mountains, Trinity Summit, open ground at Corral Prairie. 1524 Comment
  HSC48750  Arabis holboellii var. retrofracta Brad Klipfel 1973-6-10 76 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC73601  Arabis suffrutescens M. A. Baker 1980-7-23 3148 Humboldt Near Orleans Mtn. 1859 Comment
  OBI33242  Aralia californica David J. Keil 1983-7-1 17260 Humboldt Along Bull Crk Flats Rd 1.4 mi W of US 101. Humboldt Redwoods State Park Comment
  RSA568502  Aralia californica Thekla Mohr 1919-07 s.n. Humboldt Eel River. Comment
  CAS-BOT-BC128652  Arbutus menziesii L. B. Kildale 1930-8-3 10489 Humboldt Chaparral Mt. at Bug Creek Comment
  HSC7601  Arbutus menziesii L. D. Napier 1962-5-20 19 Humboldt 10 mi. SE of Arcata on Fickle Hill. 534 Comment
  UC180210  Arctium minus Joseph P. Tracy 1914-10-4 4631 Humboldt Table Bluff Northern Coast, Humboldt Bay 0 Comment
  SEINET202625 Image available Arctium minus Joseph P. Tracy 1948-9-20 18223 Humboldt Halfway between Hoopa and Weitchpec Comment
  UC1225932  Arctostaphylos X media Joseph P. Tracy 1945-3-30 17501 Humboldt Eureka 45 Comment
  UC153958  Arctostaphylos X media J. P. Tracy 1901-4-21 1035 Humboldt Immediate vicinity of Eureka 0 Comment
  UC314642  Arctostaphylos X media Joseph P. Tracy 1923-3-31 6171 Humboldt Table Bluff Northern Coast Region, around Humboldt Bay 60 Comment
  UCD50559  Arctostaphylos canescens Roman Gankin 1965-8-4 540 Humboldt On USAL Road, 23 miles north of junction with State Route 1 and 2.7 miles south of junction of Four Corners. Comment
Read comments
Jul 8 2015
  CAS-BOT-BC25213  Arctostaphylos canescens subsp. canescens L. B. Kildale 1928-4-29 5960 Humboldt Bald Mountain - at Lord-Ellis junction. Comment
  HSC98662  Arctostaphylos canescens subsp. canescens C. Witte 2007-5-17 28 Humboldt Horse Mountain Botanical Area. Forest Service Road 6N18. Near utility towers. 1483 Comment
  CAS-BOT-BC23792  Arctostaphylos columbiana C. Hart Merriam 1920-8-31 s.n. Humboldt Coast Mts. between Shelter Cove and Kenny. Comment
  CAS-BOT-BC23813  Arctostaphylos columbiana C. Hart Merriam 1920-9-19 s.n. Humboldt Bald Mt. between Korbel and Redwood Creek Comment
  CHSC35520  Arctostaphylos columbiana Thomas Nelson; James Nelson 1976-3-11 2267 Humboldt Growing on a hillside beside old highway 101 along north side of Table Bluff. Comment
  CHSC63763  Arctostaphylos columbiana Walter Knight; Irja Knight 1988-9-5 6363 Humboldt Bald Hill Road about 21.5 miles from U. S. 101 en route to Hoopa. 929 Comment
  RSA622683  Arctostaphylos columbiana Jon E. Keeley 1996-10-13 27815 Humboldt Highway 299, east of Lord Ellis Summit, east of Eureka. 700 Comment
  RSA622684  Arctostaphylos columbiana Jon E. Keeley 1996-10-13 27762 Humboldt Bald Hills Road, eastern end of Redwood National Park, 25 km west of Highway 96, north of Eureka. 700 Comment
  RSA622696  Arctostaphylos columbiana Jon E. Keeley, John Sawyer 1996-10-12 27680 Humboldt Along Highway 101 at edge of cutover redwood forest, 6 km south of Drury Scenic Parkway and Prairie Creek Redwoods State Park, north of Eureka. 320 Comment
  UC585924  Arctostaphylos columbiana Joseph P. Tracy 1934-3-11 13151 Humboldt French Camp Ridge 1066 Comment
  UCD50772  Arctostaphylos columbiana Roman Gankin; W. R. Hildreth 1967-10-26 1170 Humboldt 21.4 miles east of U.S. Highway 101 on Bald Hills Road from Orick, French Camp Ridge. Comment
  RSA632789  Arctostaphylos knightii Jon E. Keeley 1996-10-13 27764 Humboldt Bald Hills Road, eastern end of Redwood National Park, 25 km west of Highway 96, north of Eureka. 700 Comment
  HSC68217  Arctostaphylos manzanita J. P. Smith, J. O. Sawyer 1975-4-6 8051 Humboldt 3 mi. N of Whitehorn, across from the CA Dept. of Forestry Fire Station 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
  UCD52072  Arctostaphylos manzanita Joseph P. Tracy 1940-7-14 16689 Humboldt Wilder Ridge (near Kings Peak). 762 Comment
  CAS-BOT-BC38835  Arctostaphylos manzanita subsp. manzanita P. C. Everett; E. K. Balls 1959-10-24 23954 Humboldt 6.8 mi. SW from Siskiyou-Humboldt Co. line, somesbar to Orleans. 152 Comment
  CAS-BOT-BC38836  Arctostaphylos manzanita subsp. manzanita C. Hart Merriam 1926-9-15 s.n. Humboldt Junction, South fork of the Trinity and Trinity River Comment
  UC153967  Arctostaphylos manzanita subsp. manzanita Joseph P. Tracy 1909-10-7 3112 Humboldt Gans Prairie Northern Coast Ranges 609 Comment
  HSC38516  Arctostaphylos nevadensis D. E. Anderson, J. P. Smith 1971-6-18 1085 Humboldt Horse Mtn. Comment
  RSA24337  Arctostaphylos nevadensis C. B. Wolf 1941-2-26 4040 Humboldt 6 2/10 mi. W. of Klamath River Bridge on Weitchpec to Orick Rd. 610 Comment
  UC1173710  Arctostaphylos nevadensis Joseph P. Tracy 1939-8-16 16405 Humboldt Horse Mountain 1432 Comment
  UC1196874  Arctostaphylos nevadensis Joseph P. Tracy 1933-7-11 12670 Humboldt Horse Mountain 1432 Comment
  CAS-BOT-BC46793  Arctostaphylos uva-ursi Joseph P. Tracy 1945-3-30 17504 Humboldt Eureka 45 Comment
  CAS-BOT-BC47211  Arctostaphylos uva-ursi Josh Suchocki; Charlene Vullo; Kyle Wear 1995-4-15 101 Humboldt Manila. Comment
  SBBG5514  Arctostaphylos uva-ursi H. and M. Dearing 1939-5-25 3436 Humboldt near Samoa Comment
  SD117461  Arctostaphylos uva-ursi Robert F. Thorne 1974-7-29 45082 Humboldt Samoa Dunes Comment
  UCD52029  Arctostaphylos uva-ursi Joseph P. Tracy 1945-3-30 17500 Humboldt 45 Comment
  SEINET11989104  Arctostaphylos uva-ursi R. Gankin, Hildreth, W. R. 1967-1 1149 Humboldt 1.7 mi S of Samoa, on Humboldt Peninsula Comment
  CAS-BOT-BC48259  Arctostaphylos viscida subsp. viscida Joseph P. Tracy 1939-4-29 16265 Humboldt Orleans 121 Comment
  CHSC79650  Arctotheca calendula Gordon Leppig 2000-4-9 1288 Humboldt Arcata. Union St. at 7th St. South of Phillips House. UTM zone 10, 4525N, 409E. 24 Comment
  UCR64184  Arctotheca calendula T. C. Fuller, G. D. Barbe 1989-6-8 4321 Humboldt Larry Pries daily, 3.4 mi west of Main Street, on Centerville beach rd. Ferndale Comment
  CAS-BOT-BC64584  Armeria maritima subsp. californica Ira L. Wiggins 1930-7-11 4683 Humboldt Near Samoa. Comment
  HSC69625  Armeria maritima subsp. californica R. Kalal 1979-5-29 34 Humboldt Along Samoa Blvd. 3 Comment
  CAS-BOT-BC82102  Arnica cernua Joseph P. Tracy 1938-6-13 15902 Humboldt Horse Mountain 1432 Comment
  HSC34913  Arnica cordifolia Thomas W. Nelson, Jane P. Nelson 1975-5-24 1852 Humboldt McKeown Ranch, N of Dinsmore. Comment
  CAS-BOT-BC82430  Arnica discoidea Doris K. Kildale 1926-6-27 2190 Humboldt McClellan Mountain - Sweasey Lake 822 Comment
  HSC35606  Arnica discoidea Thomas W. Nelson, Jane P. Nelson, James Nelson 1975-7-15 2017 Humboldt French Camp, Bald Hills. Comment
  CAS-BOT-BC82429  Arnica discoidea Doris K. Kildale 1927-6-24 3539 Humboldt top of ridge before descent to Shelter Cove Comment
  HSC58599  Arnica parryi G. L. Clifton, Griswold 1979-7-25 10764 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1814 Comment
  HSC102702  Arrhenatherum elatius J. P. Smith 2013-6-16 13730 Humboldt Along State Route 36, adjacent to the Dinsmore Airport. 735 Comment
  CAS-BOT-BC146269  Arrhenatherum elatius var. elatius Ashley C. Browne 1936-6-11 s.n. Humboldt Patrick's Point State Park. Comment
  UC1222998  Artemisia douglasiana Joseph P. Tracy 1947-8-24 17892 Humboldt Meadow at Box Camp; Trinity Summit 1463 Comment
  HSC12593  Artemisia douglasiana C. Kline 1970-11-15 72 Humboldt Clam Beach Lagoon Comment
  OBI17056  Artemisia pycnocephala Carl B. Wolf 1940-11-10 9782 Humboldt Coast S of Mendocino-1/8 mi N of Where rd turns inland to Petrolia Comment
  HSC55850  Aruncus dioicus var. acuminatus G. L. Clifton, Griswold 1979-7-25 10811 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1814 Comment
  CAS-BOT-BC400538  Asarum caudatum Alice Eastwood; John Thomas Howell 1937-6-23 4775 Humboldt Near Dinsmore's Comment
  HSC34795  Asarum caudatum John Palmer 1975-4-9 297 Humboldt 40 yds. E of intersection of 17th at Bayview St., Arcata Comment
  HSC59473  Asarum caudatum M. A. Ericksen 1979-5-9 260 Humboldt Along Jolly Giant Creek, HSU campus Comment
  POM228362  Asarum caudatum C. C. Harris, S. K. Harris 1936-6-14 s.n. Humboldt On Yager Road from Carlotta 457 Comment
  UC1198116  Asarum caudatum Joseph P. Tracy 1913-6-25 4343 Humboldt Dinsmore's Ranch; in valley of Van Duzen River opposite Buck Mountain 762 Comment
  UC494106  Asarum caudatum H. E. Parks 1931-3-24 918 Humboldt Near Orick Comment
  SEINET12097904  Asarum hartwegii H. P. Chandler 1901-1 1478 Humboldt Klamath River 396 Comment
  HSC102613  Aspidotis densa M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-28 1600 Humboldt Slopes above Bret Hole and below trail 6E18, 1.5 km SSW of Trinity Summit. 1778 Comment
  HSC54217  Aspidotis densa Griswold, Butler 1979-7-12 7281 Humboldt Near Cedar Creek, close to the town of Willow Creek 1158 Comment
  UC419051  Aspidotis densa J. P. Tracy and H. E. Parks 1930-9-15 763 Humboldt Kneeland; Bald Hills Comment
  UC440176  Aspidotis densa Joseph P. Tracy 1919-9-25 5301 Humboldt Trinity Summit; Northern Coast Ranges 182 Comment
  RSA44410  Aster oregonensis H. M. Pollard 1947-8-30 s.n. Humboldt North road along Klamath River near Van Fleet Ranch, Orleans region. Comment
  SEINET880898 Image available Astragalus agnicidus Henry Tosten 1931-1 s.n. Humboldt Near Bear Buttes, 4 mi south of Miranda; local on Tosten and Pierce Ranch. 762 Comment
  UC1565647  Astragalus agnicidus Ken Berg and Roxanne Bittman 1987-9-23 Humboldt off Bear Butte Rd. about 2 mi sw of jct with Maple Hills Rd sw Mirando; sw of Mirando Comment
  CAS-BOT-BC186562  Astragalus nuttallii var. virgatus F. H. Utech 1986-5-23 86 -385 Humboldt King Mountain Range: 0.5 mi NNW on Kings Peak Road (Humboldt Co. hwy C4A) from junction with Shelter Cove Road 600 Comment
  UC303178  Astragalus pycnostachyus var. pycnostachyus Joseph P. Tracy 1925-7-18 7217 Humboldt 3 mi s of point Cape Mendocino (southwestern slopes, fronting the ocean); Northern Coast Ranges, s Cape Mendocino 3 Comment
  CAS-BOT-BC200854  Astragalus umbraticus D. E. Anderson 1965-5-15 3694 Humboldt About 7 miles north of Hoopa on Bloody Camp Prairie road Comment
  HSC101497  Astragalus umbraticus Thomas W. Nelson, Jane P. Nelson 1987-6-27 8620 Humboldt Along Forest Service Road to Onion Lake, 8.2 miles from junction with State Route 96 823 Comment
  RSA138295  Astragalus umbraticus Volney Rattan 1878-1 1878 Humboldt Humboldt. Comment
  HSC3825  Asyneuma prenanthoides J. Sandborg, F. Sandborg 1968-7-19 54 Humboldt Bluff Creek near Notice Creek, near road below Notice Creek Bridge. Comment
  CAS-BOT-BC69524  Athyrium filix-femina subsp. cyclosorum Ludwig A. Waitzinger 1925-8-3 s.n. Humboldt Martins Ferry. Comment
  HSC55110  Athyrium filix-femina var. cyclosorum G. L. Clifton 1979-7-31 11854 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  UC503067  Athyrium filix-femina var. cyclosorum H. E. Parks and Joseph P. Tracy 1930-9-13 9180 Humboldt Jacoby Creek; Northern Coast Ranges 121 Comment
  HSC101991  Athysanus pusillus M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-12 890 Humboldt Patterson Meadows 1566 Comment
  HSC72972  Athysanus pusillus Gail Newton 1980-6-24 601 Humboldt Near Ladder Rock 1570 Comment
  UC1198292  Athysanus pusillus Joseph P. Tracy 1922-4-30 6016 Humboldt near Willow Creek (Trinity River Valley); Northern Coast Ranges, Trinity River Valley 152 Comment
  UC1222661  Athysanus pusillus Joseph P. Tracy 1950-4-20 18610 Humboldt 1/2 mi w of Dinsmore's (along Van Duzen River, opposite Buck Mountain); Van Duzen River 762 Comment
  UC146161  Atriplex gmelinii var. gmelinii Joseph P. Tracy 1905-10-1 2393 Humboldt edge of Humboldt Bay at mouth Elk River (region about Humboldt Bay); Northern Coast Region, Humboldt Bay, mouth Eel River 0 Comment
  CDA23297  Atriplex patula var. obtusa Gordon Leppig 1999-10-25 1266 Humboldt Eureka, PALCO Marsh Comment
  HSC47798  Avena barbata Michael A. Watkins 1978-6-10 4 Humboldt Arcata, E side of the 7th Street overpass to Hwy. 101 Comment
  UC181262  Avena barbata Joseph P. Tracy 1913-6-13 4114 Humboldt opposite Buck Mountain; Northern Coast Ranges, valley of Van Duzen River, Dinsmore's 762 Comment
  CAS-BOT-BC66217  Azolla filiculoides Malcom A. Nobs; S. Galen Smith 1949-8-9 1246 Humboldt Clam Beach Comment
  CAS-BOT-BC98769  Baccharis douglasii L. R. Abrams 1927-8-31 12058 Humboldt Marshes along highway between Eureka and Arcata Comment
  UC249855  Baccharis pilularis Joseph P. Tracy 1923-10-6 6565 Humboldt Eureka, around Humboldt Bay Eureka, Humboldt Bay 30 Comment
  HSC5120  Baccharis pilularis subsp. consanguinea Jerry Parker 1968-9-19 61 Humboldt Clam Beach Comment
  HSC26396  Baccharis pilularis subsp. pilularis T. O. Osborne 1970-9-16 30 Humboldt Trinidad Bay, Prisoner Rock Comment
  HSC100426  Baeria chrysostoma Carl C. Marshall Jun 1885 31 Humboldt Bear River. Comment
  UC175209  Balsamorhiza deltoidea Joseph P. Tracy 1913-6-17 4175 Humboldt near the summit Buck Mountain; Northern Coast Ranges 1524 Comment
  UC582639  Balsamorhiza deltoidea Joseph P. Tracy 1932-6-14 10143 Humboldt west of mouth of South Fork of Trinity River South Fork of Trinity River 609 Comment
  POM52329  Balsamorhiza hookeri var. lagocephala Geo. D. Butler 1910-4-9 1157 Humboldt Dry hill near Eureka Comment
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Dec 1 2014
  UC1198288  Barbarea orthoceras Joseph P. Tracy 1913-4-13 4037 Humboldt on a branch of Ryans Slough about 3 miles East of Eureka 152 Comment
  HSC5189  Bellis perennis John A. Dubois 1962-5-23 20 Humboldt 20 miles East of Arcata Comment
  CAS-BOT-BC48157  Bensoniella oregona R. Bacigalupi; L. Constance; J. P. Tracy; R. Moran; R. L. Rodriguez; S. J. Carlquist 1951-6-14 3410 Humboldt Bald Mountain ridge - in bog, edge of forest at High Prairie, on long high ridge between Mad River and Redwood Creek 1066 Comment
  CAS-BOT-BC128915  Berberis aquifolium Alice Eastwood; John Thomas Howell 1937-6-23 4794 Humboldt Near Dinsmore's 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
  HSC72981  Berberis aquifolium var. repens Gail Newton 1980-7-22 1676 Humboldt Near Devils Backbone 1554 Comment
  HSC39525  Berberis nervosa Thomas W. Nelson, Jane Nelson 1976-6-15 2715 Humboldt Along old trail from lookout to Blocksburg 1585 Comment
  HSC41247  Berberis nervosa Brad Klipfel 1974-5-27 394 Humboldt Near Horse Mtn. Comment
  HSC76282  Berberis nervosa Teresa Prendusi 1981-7-9 188 Humboldt Near Cedar Camp. 1268 Comment
  SDSU13767  Berberis nervosa Harvey 1938-8-14 2318 Humboldt U.S. 299. Arcata-Willow Creek. Comment
  UC1198383  Berberis nervosa J. P. Tracy 1903-8-9 1941 Humboldt vicinity of Eureka 0 Comment
  CAS-BOT-BC75797  Berberis pinnata Doris K. Kildale 1926-6-27 2231 Humboldt Little Van Duzen River. On road for Bridgeville to Weaverville. 640 Comment
  CAS-BOT-BC75807  Berberis pinnata Doris K. Kildale; L. B. Kildale 1930-5-12 9556 Humboldt McClellan Hill near Bridgeville. 609 Comment
  UCSB8245  Blechnum spicant Robbins, G. 1936-8-1 Humboldt Near Strong's Station. Comment
  UC1133575  Bolboschoenus maritimus H. S. Yates 1936-6-16 5673 Humboldt 1 mi ne Samoa; Eureka Quad., ne of Samoa Comment
  UC1713685  Boschniakia strobilacea J. P. Tracy 1916-6-25 4739 Humboldt ridge between Little River and Redwood Creek Comment
  UC197916  Botrychium multifidum Joseph P. Tracy 1906-11-4 2551 Humboldt Eureka Northern Coast Region 0 Comment
  HSC56002  Boykinia major Overton, Butler 1979-7-31 11453 Humboldt Near Water Dog Lakes, close to the town of Hoopa 1830 Comment
  HSC76195  Boykinia major Overton, Butler 1979-8-2 12503 Humboldt Near Bret Hole, close to the town of Hoopa 1554 Comment
  UC303172  Boykinia occidentalis H. E. Parks and Joseph P. Tracy 1924-8-10 6804 Humboldt Van Duzen River near Strongs Station; Northern Coast Ranges, Van Duzen River 60 Comment
  UC165031  Brickellia californica Joseph P. Tracy 1900-9-10 960 Humboldt near Hydesville; Northern Coast Region, Van Duzen River 60 Comment
  UC205166  Brickellia californica Joseph P. Tracy 1920-8-15 5354 Humboldt mouth of Bluff Creek Northern Coast Ranges, Klamath River 152 Comment
  HSC70984  Brickellia greenei Gail Newton 1980-7-22 1660 Humboldt Near Devils Backbone 1554 Comment
  HSC89547  Briza maxima M. Roantree 1985-5-2 35 Humboldt E side of Trinidad Head. Comment
  RSA385270  Briza maxima Bonnie C. Templeton 1964-6-13 100901 Humboldt Samoa [sand dunes], west of Arcata. Comment
  RSA86704  Briza maxima Joseph P. Tracy 1930-6-15 8758 Humboldt Alder Point Comment
  UC1145097  Briza maxima Joseph P. Tracy 1950-5-30 18711 Humboldt Willow Creek Trinity River Valley 152 Comment
  SEINET9806296 Image available Briza maxima Unknown 2007-6-19 Humboldt Arcata, CA Comment
  HSC89421  Briza minor P. A. Daly 1984-7-15 32 Humboldt Trinidad Head 61 Comment
  UC37551  Briza minor Joseph Burtt Davy and Walter C. Blasdale 1899-6-12 5473 Humboldt Elk Prairie Comment
  HSC36784  Brodiaea elegans subsp. elegans Thomas W. Nelson, Jane P. Nelson, James Nelson 1975-7-20 2038 Humboldt At summit just W of Larabee Valley Comment
  JEPS7726  Brodiaea elegans subsp. elegans W. L. Jepson 1902-6 1960 Humboldt Hupa Road Redwood Creek (Redwood Creek) Comment
  BLMAR554  Brodiaea terrestris Jennifer Wheeler 2004-5-20 554 Humboldt Stornetta Ranch Comment
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Apr 21 2014
  JEPS514  Brodiaea terrestris subsp. terrestris Joseph P. Tracy 1933-5-20 12249 Humboldt 1 mi. w. Petrolia; Northern Coast Ranges, Mattole Valley 91 Comment
  UC1225870  Brodiaea terrestris subsp. terrestris Joseph P. Tracy 1942-6-15 17125 Humboldt near Redcrest resort; Englewood 91 Comment
  CAS-BOT-BC144346  Bromus Ashley C. Browne 1936-6-11 s.n. Humboldt Patrick's Point State Park. Comment
  CAS-BOT-BC149566  Bromus carinatus var. carinatus Joseph P. Tracy 1935-5-16 13806 Humboldt Eureka. 60 Comment
  UC1103279  Bromus carinatus var. carinatus Joseph P. Tracy 1942-6-2 17097 Humboldt 2 mi n of Bridgeville 609 Comment
  UC180489  Bromus carinatus var. carinatus Joseph P. Tracy 1914-5-14 4447 Humboldt Fort Seward 121 Comment
  UC184919  Bromus carinatus var. carinatus Joseph P. Tracy 1912-6-9 3654 Humboldt Northern Coast Region, Alton Alton; Northern Coast Region, Alton 30 Comment
  UC37672  Bromus carinatus var. carinatus J. Burtt Davy 1899-7-30 6179 Humboldt opposite Eureka (North Coast Ranges); North Coast Ranges Comment
  UC526931  Bromus commutatus Joseph P. Tracy 1933-6-9 12534 Humboldt North Coast Ranges, on Eel River, Shively Shively; North Coast Ranges, Eel River, Shively 30 Comment
  HSC9289  Bromus diandrus N. R. Waite 1965-5-18 33 Humboldt W edge of Humboldt State University campus Comment
  HSC45109  Bromus diandrus R. Sutherland 1978-4-25 10 .25478 Humboldt 9 Comment
  HSC9239  Bromus hordeaceus T. L. Ackerman 1964-5-7 41 Humboldt 1.5 mi. W from Sweesey dam Comment
  RSA44464  Bromus laevipes Henry M. Pollard 1948-7-19 s.n. Humboldt Near Van Fleet ranch Comment
  UCD59657  Bromus secalinus var. velutinus G. T. Bateham 1921-8-7 s.n. Humboldt Showers Pass. Comment
  UC526735  Bromus vulgaris Joseph P. Tracy 1926-5-2 7427 Humboldt Trinity River Valley near the South Fork; Northern Coast Ranges, Trinity River Valley 182 Comment
  SEINET10524083  Bromus vulgaris A. Arthur Heller 1923-7-10 Heller 13789 Humboldt Open places in the redwood forest between Scotia and Pepperwood. Comment
  SEINET10524095  Bromus vulgaris Harley P. Chandler Chandler 1177 Humboldt 30 Comment
  UC673075  Cakile edentula Joseph P. Tracy 1940-10-3 16739 Humboldt near Samoa (on Humboldt Bay); Humboldt Bay 3 Comment
  CAS-BOT-BC36862  Cakile edentula var. edentula Doris K. Kildale 1926-7-14 2375 Humboldt Trinidad Beach. Comment
  SEINET11092946  Cakile edentula var. edentula Unknown 1940-10-3 16739 Humboldt CALIFORNIA PLANT -- HUMBOLDT COUNTY annual, formign bushy-branched plants 2 ft tall Common on ocean beach, just above high tide. SAND DUNES, NEAR SAMOA, ON HUMBOLDT BAY Altitude 10 feet. Comment
  HSC74073  Calamagrostis foliosa Joyce Walker 1980-8-15 Humboldt Fiddle Prairie 829 Comment
  CAS-BOT-BC185237  Calamagrostis koelerioides Joseph P. Tracy 1935-7-30 14371 Humboldt Salmon Summit. 2011 Comment
  HSC58535  Calamagrostis koelerioides Overton, Butler 1979-7-23 9442 Humboldt Near Horse Mtn., close to the town of Willow Creek 1478 Comment
  HSC74184  Calamagrostis koelerioides M. A. Baker 1980-7-23 3140 Humboldt Near Orleans Mtn. 1859 Comment
  JEPS52599  Calandrinia ciliata Lincoln Constance 1934-6-19 912 Humboldt Grasshopper Peak South Fork Eel River, Bull Creek Region (near summit) 914 Comment
  HSC17630  Calandrinia ciliata C. A. Bontrager 1966-4-24 45 Humboldt 1834 Allard Ave., Eureka Comment
  CAS-BOT-BC80385  Calocedrus decurrens Doris K. Kildale 1927-12-1 4203 Humboldt Klamath River at Orleans Comment
  CAS-BOT-BC80386  Calocedrus decurrens Doris K. Kildale 1926-8-31 2606 Humboldt Mattole River Valley, Geo. H. Mineis Ranch Comment
  UC1198260  Calocedrus decurrens Joseph P. Tracy 1912-8-1 3954 Humboldt opposite Buck Mountain (Dinsmore's Ranch); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  HSC15423  Calochortus monophyllus J. Wendell Howe 1236 Humboldt Comment
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Feb 11 2018
  HSC31756  Calochortus tolmiei Timothy B. Devine 1974-5-4 322 Humboldt Bank of Chezem Rd. at junction of Hwy. 299 457 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
  UC1197677  Calochortus tolmiei Joseph P. Tracy 1922-4-30 5997 Humboldt near Willow Creek; Northern Coast Ranges, Trinity River Valley 152 Comment
  UC659312  Calochortus tolmiei Lincoln Constance, Alan A. Beetle with Joseph P. Tracy 1940-5-17 2614 Humboldt near Eureka; Larrabee Valley 762 Comment
  CAS-BOT-BC494363  Calochortus tolmiei Volney Rattan 1882-6-1 s.n. Humboldt Kuseland Comment
  HSC82398  Caltha leptosepala Thomas W. Nelson 1979-7-11 5016 Humboldt N Trinity Mtn. and ridge to E. 1829 Comment
  HSC99483  Caltha leptosepala K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-14 142 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
  HSC16571  Calypso bulbosa Francis Winter 1960-5-14 Humboldt Samoa Peninsula, 6 mi. W of Arcata Comment
  HSC89627  Calypso bulbosa Reid Storre, Brian Marston, William Kristan 1988-4-2 29 Humboldt Hilltop Ranch Comment
  HSC55179  Calyptridium monospermum Gilbert Muth 1979-8-1 12189 Humboldt Near Red Cap Prairie, close to the town of Hoopa 1780 Comment
  SBBG5774  Calystegia occidentalis subsp. occidentalis H. and M. Dearing 1939-5-24 Humboldt Pass Rd, Dyerville to Mattole Comment
  HSC98672  Calystegia occidentalis subsp. occidentalis Cara Witte 2008-7-10 868 Humboldt Along National Forest 1 on Kinsey Ridge. 1/4 mile from intersection with Forest Service Road 4N09. 1302 Comment
  UC562491  Calystegia purpurata Joseph P. Tracy 1927-7-24 8298 Humboldt Upper Mattole 152 Comment
  HSC6366  Calystegia soldanella K. P. St. John 1965-5-21 40 Humboldt Dry Lagoon State Park, 13 mi. N of Trinidad Comment
  HSC6367  Calystegia soldanella J. R. Woodside 1963-5-11 6 Humboldt 1.25 mi. N of Fairhaven Comment
  HSC74419  Camassia quamash subsp. linearis Gail Newton 1980-8-10 2041 Humboldt Near Blake Mountain. 1707 Comment
  UCR122368  Camissonia cheiranthifolia George K. Helmkamp, E. A. Helmkamp 2001-7-8 7021 Humboldt North Coast, Samoa Peninsula, 2.6 miles south of CA Hwy 255 bridge across Humboldt Bay 15 Comment
  RSA79376  Camissonia contorta E. K. Balls, L. W. Lenz 1952-5-12 17202 Humboldt 0.6 mi E of Dinsmore along Hwy 36 from Alton to Red Bluff. Comment
  HSC45064  Camissonia ovata R. Sutherland 1978-3-30 2 .30378 Humboldt Mckee Flat 293 Comment
  OBI36380  Camissoniopsis cheiranthifolia David J. Keil 1983-7-1 17283 Humboldt Ca. 5 mi NW of Petrolia along mattole Rd Comment
  CAS-BOT-BC160237  Camissoniopsis cheiranthifolia subsp. cheiranthifolia Doris K. Kildale 1925-9-28 1356 Humboldt Samoa Peninsula Comment
  RSA120762  Campanula prenanthoides S. S. Tillett 1956-7-6 612 Humboldt S. slope along Bar Shanty Road, 5 mi. from Orleans. 488 Comment
  RSA21317  Campanula prenanthoides C. B. Wolf 1937-8-13 9215 Humboldt North coast range, 8 mi. east of Hoopa Valley on new road towards Trinity summit. 1220 Comment
  SEINET10462871  Campanula prenanthoides Chandler 1901-6-14 CHANDLER 1476 Humboldt KLAMATH RIVER, ORLEANS TO SOMES BAR 1000 Comment
  SEINET10462992  Campanula prenanthoides Tracy 1914-9-6 TRACY 4623 Humboldt Bald Mountain, between High Prairie and Snow Camp 1067 Comment
  SEINET10905933  Campanula prenanthoides Duncan 1920-9-22 Duncan s.n. Humboldt HOOPA VALLEY Comment
  SEINET10939033  Campanula prenanthoides Pollard 1948-8-4 POLLARD s.n. Humboldt ORLEANS MTN TRAIL 4000 Comment
  SEINET201621 Image available Campanula prenanthoides Joseph P. Tracy 1911-7-4 3286 Humboldt Hills slopes at W side of Trinity River near Willow Creek. 244 Comment
  HSC99576  Campanula scouleri K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-8-10 241 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
  SEINET10463418  Campanula scouleri Griswold 1979-7-11 GRISWOLD 6946 Humboldt NR SNOW CAMP MTN, IAQUA BUTTES QUAD. NR WILLOW CR. EVERGREEN CONIFER FOREST, MEADOW, 4331 Comment
  SEINET10463743  Campanula scouleri Manning MANNING 305 Humboldt Near Hupa, Bald Hills Comment
  SEINET201622  Campanula scouleri Joseph P. Tracy 1937-7-25 15560 Humboldt Happy Camp Mountain In Trinity Summit Range NE of Hawkins Bar. 1280 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-BC37429  Cardamine californica Parks; Tracy 1931-3-26 0916 Humboldt Lower Van Duzen River. 60 Comment
  CAS-BOT-BC37430  Cardamine californica Parks; Tracy 1931-3-26 0916 Humboldt Lower Van Duzen River. 60 Comment
  HSC40907  Cardamine californica J. O. Sawyer 1970-4-24 2189 Humboldt Groves Prairie below Lone Pine Ridge, N of Willow Creek Comment
  HSC45593  Cardamine californica Diane L. Reed 1978-4-22 38 Humboldt Trinidad Head Comment
  HSC6689  Cardamine californica E. W. Styskel 1963-4-20 16 Humboldt 3 mi SE of Korbel on Snow Camp Rd. 290 Comment
  HSC70231  Cardamine californica M. A. Baker 1980-6-8 1893 Humboldt Near Buck Flat. 1554 Comment
  HSC79520  Cardamine californica Kenneth Clark 1980-3-1 518 Humboldt Middle and upper terraces of Dead Man's Gulch 61 Comment
  LA204275  Cardamine californica Victor Duran; 1933-5-11 3405 Humboldt Van Duzen River, near Bridgeville Comment
  SDSU2479  Cardamine californica D. F. Howe 1963-5-26 3554 Humboldt 3.7 miles east of Orick on Bald Hill road. 488 Comment
  UC1222656  Cardamine californica Joseph P. Tracy 1950-4-20 18619 Humboldt along highway about 2 mi s of crossing Little Van Duzen (w slope Buck Mountain); , s of Little Van Duzen crossing Comment
  RSA734791  Cardamine californica var. cardiophylla LeRoy E. Detling 1935-4-20 1642 Humboldt Lansdale Grove of Redwoods. Comment
  UC1199184  Cardamine californica var. sinuata Joseph P. Tracy 1939-3-19 16206 Humboldt 5 mi e Carlotta (by old Strong's District School House); e of Carlotta, by old Strong's District School House 45 Comment
  HSC6639  Cardamine oligosperma S. J. Hawks 1965-3-12 4 Humboldt 0.5 mi. W of Fairhaven Comment
  HSC74460  Cardamine oligosperma M. A. Baker 1980-5-18 1356 Humboldt Near Black Mtn. 792 Comment
  JEPS53297  Cardamine oligosperma Lincoln Constance 1934-5-31 745 Humboldt from w boundary Park to Grasshopper Peak Road (Squaw Peak Road) (n side creek, Bull Creek flat, along Bull Creek, Bull Creek Region, South Fork Eel River); Bull Creek Region, South Fork Eel River, Bull Cr Comment
  UC1199203  Cardamine oligosperma Joseph P. Tracy 1918-5-1 4898 Humboldt Kneeland Prairie Northern Coast Ranges, Kneeland Prairie 762 Comment
  UC1199204  Cardamine oligosperma Joseph P. Tracy 1919-3-31 5166 Humboldt along Willow Creek ((Tributary of Trinity River, Humboldt Co) near its mouth); Northern Coast Ranges, along Willow Creek 152 Comment
  JEPS79828  Cardaria draba Joseph P. Tracy 1933-5-19 12201 Humboldt Alton to Fortuna (Eel R.); Eel R. 15 Comment
  UC668056  Cardaria draba Joseph P. Tracy 1938-6-12 15895 Humboldt opposite mouth of Van Duzen River (Eel River, Alton to Fortuna); Eel River 15 Comment
  UCD129920  Carduus tenuiflorus W. A. Williams 1951-6-1 s.n. Humboldt near Capetown. Comment
  JEPS79860  Carex aquatilis var. dives Joseph P. Tracy 1925-7-5 7172 Humboldt near High Prairie (Northern Coast Ranges, Bald Mountain); Northern Coast Ranges, Bald Mountain 1066 Comment
  UC303008  Carex arcta Joseph P. Tracy 1926-7-5 7723 Humboldt near Redwood House (on road to head of Yager); Northern Coast Ranges 609 Comment
  HSC44019  Carex athrostachya Thomas W. Nelson, Jane P. Nelson 1977-7-4 3591 Humboldt Beside pond above Alder Springs 1585 Comment
  CAS-BOT-BC19217  Carex barbarae Henry M. Pollard 1945-8-26 s.n. Humboldt Near Orleans Hotel, Klamath River Canyon. Comment
  RSA246855  Carex bolanderi Robert F. Thorne, Percy C. Everett 1965-8-5 35136 Humboldt Mt. Chamisal: below summit. 747 Comment
  SEINET200965  Carex bolanderi Joseph P. Tracy 1914-7-5 4549 Humboldt Northern Coast Ranges Bald Mountain between High Prairie and Snow Camp. 1067 Comment
  HSC44056  Carex bolanderi Thomas W. Nelson, Jane P. Nelson 1977-7-1 3552 Humboldt Along Blanket Creek 1494 Comment
  HSC44058  Carex bolanderi Thomas W. Nelson, James Nelson 1976-7-28 3076 Humboldt Between Alder Springs and road to Pine Mtn. 1524 Comment
  CHSC90273  Carex brainerdii Thomas W. Nelson; Jane P. Nelson 1987-6-11 8588 Humboldt North Coast Ranges. At trail head and along trail to Grogans Hole. Comment
  UC1103599  Carex concinnoides Joseph P. Tracy 1927-6-19 8202 Humboldt Big Lagoon Northern Coast Region, Big Lagoon 15 Comment
  HSC61628  Carex cusickii Ruby Van Deventer 1959-6-20 Humboldt Humboldt/Del Norte County line, Onion Lake 1220 Comment
  RSA364727  Carex densa Thomas W. Nelson, Ken Hindley 1978-5-28 4086 Humboldt On McKeown Ranch north of Dinsmore. 762 Comment
  CAS-BOT-BC19962  Carex exsiccata Mrs. H. C. Cantelow 1936-5-18 s.n. Humboldt 8 miles NE of Orick. Comment
  HSC33152  Carex geyeri Thomas W. Nelson, J. Cole, Brad Klipfel 1974-5-8 1249 Humboldt Horse Mtn. area, E of microwave tower 1220 Comment
  SEINET7561247 Image available Carex harfordii David Castaner 1989-6-19 10253 Humboldt Gold Bluff Beach at entrance. Comment
  JEPS79845  Carex hendersonii Joseph P. Tracy 1911-6-4 3230 Humboldt Northern Coast Region, along Little River, 5 mi from the Coast Little River; Northern Coast Region, Little River 121 Comment
  HSC70164  Carex hendersonii Thomas W. Nelson, Jane P. Nelson 1978-6-10 4416 Humboldt Behind the Seventh-Day Adventist Church on F St. 61 Comment
  CAS-BOT-BC7793  Carex laeviculmis Joseph Prince Tracy 1932-7-16 10635 Humboldt Trinity Summit 1584 Comment
  CHSC90274  Carex lenticularis var. impressa Thomas W. Nelson; Jane P. Nelson 1987-6-11 8598 Humboldt North Coast Ranges. Box Spring at Box Camp. Along trail to North Trinity Mountain. 1524 Comment
  UC203892  Carex leptalea Joseph P. Tracy 1918-7-21 5086 Humboldt Northern Coast Ranges, around Humboldt Bay, Humboldt Hill Humboldt Hill; Northern Coast Ranges, Humboldt Bay, Humboldt Hill 91 Comment
  CAS-BOT-BC31466  Carex leptopoda Joseph Prince Tracy 1935-6-8 13937 Humboldt Eureka. 60 Comment
  HSC91619  Carex leptopoda E. Mackey 1987-7-19 Humboldt Patrick's Point State Park Comment
  HSC76798  Carex leptopoda L. P. Janeway 1982-6-16 8 Humboldt Near small tributary to Jolly Giant Creek below Arcata High school 9 Comment
  UC1103587  Carex luzulina var. luzulina Joseph P. Tracy 1933-7-16 12771 Humboldt South Fork Mountain, McKay Camp Northern Coast Ranges 1676 Comment
  HSC102160  Carex microptera M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-3 1070 Humboldt Patterson Meadows 1555 Comment
  CAS-BOT-BC119536  Carex nudata Joseph Prince Tracy 1935-6-22 13959 Humboldt Eel River, at mouth of Larrabee Creek. Comment
  UCR40087  Carex nudata L. P. Janeway 1983-7-23 435 Humboldt Blue Lake Q., North Fork of Mad River at the old Hwy 299 bridge (near the new bridge). 40 Comment
  CAS-BOT-BC119542  Carex nudata Doris K. Kildale 1929-5-26 9134 Humboldt Klamath River st Orleans. 152 Comment
  SEINET10711630  Carex nudata A. Arthur Heller 1923-7-10 Heller 13795 Humboldt Wet soil along the Eel River between Scotia and Pepperwood in the redwood belt. Comment
  SEINET3905214  Carex nudata Thomas Nelson 1977-5-30 3407 Humboldt In Mad River at Anderson's Ford north of Dinsmore on the McKeown Ranch.; 0 610 Comment
  UC562448  Carex nudata Joseph P. Tracy 1935-7-21 14120 Humboldt along river at Willow Creek Trinity River Valley 152 Comment
  CAS-BOT-BC119379  Carex obnupta Charles Vancouver Piper 1921-5-22 s.n. Humboldt Eureka Comment
  CAS-BOT-BC119383  Carex obnupta David Daniels Keck 1938-8-5 4770 Humboldt Big Lagoon Comment
  CHSC88893  Carex obnupta L. P. Janeway; B. Castro 2004-9-10 8319 Humboldt North Coast. South Spit of Humboldt Bay, 3.6 km north-northeast of Table Bluff Lighthouse site; between South Spit Road and the Humboldt Bay mudflats. 2 Comment
  SEINET7569469 Image available Carex obnupta David Castaner 1989-6-19 10249 Humboldt Fern Canyon. Comment
  UC1026440  Carex obnupta Frank W. Peirson 1941-7-28 13108 Humboldt Patrick Pt. State Park Comment
  POM247171  Carex pachystachya Joseph P. Tracy 1935-6-8 13936 Humboldt Eureka. 0 Comment
  HSC45390  Carex pachystachya Thomas W. Nelson, Jane P. Nelson 1978-7-2 4406 Humboldt Off FS 2S08 near Pine Mtn., road to Lost Lake 1463 Comment
  CAS-BOT-BC119165  Carex pansa David Daniels Keck 1938-8-5 4766 Humboldt Calm Beach in dunes. Comment
  HSC103625  Carex rossii Thomas W. Nelson, Jane Nelson 1987-6-11 8536 Humboldt Along Forest Service Rd. 13N01, 18 mi. from junction with State Route 96. 1067 Comment
  HSC82401  Carex scopulorum var. bracteosa Thomas W. Nelson 1979-7-11 5013 Humboldt N Trinity Mtn. and ridge to E. 1829 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
  SEINET200796  Carex subbracteata J. P. Tracy 1928-6-24 8465 Humboldt Valley of S Yager Creek 0 Comment
  UC303006  Carex subfusca Joseph P. Tracy June, 1926 7631 Humboldt Horse Mountain Northern Coast Ranges 1463 Comment
  CAS-BOT-BC116683  Carex subfusca Joseph Prince Tracy 1928-6-17 8450 Humboldt Trinity River Valley, at Willow Creek. 152 Comment
  HSC44031  Carex subfusca Thomas W. Nelson, Jane P. Nelson 1977-9-3 3728 Humboldt Along creek draining N end of pond above Alder Springs 1137 Comment
  UCD140938  Carex tumulicola Collector Unknown 1940-6-27 s.n. Humboldt Miranda. Comment
  JEPS80033  Carex unilateralis Joseph P. Tracy 1912-7-21 3783 Humboldt Alton; Northern Coast Region 30 Comment
  CAS-BOT-BC115536  Carex unilateralis Joseph Prince Tracy 1938-7-5 16007 Humboldt Carlotta. Wet place in open flat by old Strong's District School House, 5 mi E of town. 45 Comment
  CAS-BOT-BC115542  Carex unilateralis Joseph Prince Tracy 1933-6-9 12539 Humboldt Fortuna, Bed of winter pool. 18 Comment
  SEINET10751219  Carex unilateralis Joseph P. Tracy 1930-6-15 Tracy 8756 Humboldt Dobbyn Creek, bordering a pond. 152 Comment
  UC1152068  Carex unilateralis Joseph P. Tracy 1950-7-6 19011 Humboldt On the Albee Road; Buck Mountain; 3 miles south of Burr Valley 1158 Comment
  UC1103607  Carex utriculata Joseph P. Tracy 1939-7-9 16322 Humboldt Lake Prairie Bald Mountain 1066 Comment
  POM264409  Carex viridula H. E. Parks 1935-09 5214 Humboldt Dry Lagoon, South of Orick Comment
  UCD129942  Carthamus lanatus T. C. Fuller 1962-8-7 9365 Humboldt Luke's Prairie, on ridge 1 m. north above Bull Creek, ca. 2 miles west of Dyerville. Comment
  HSC98629  Castilleja affinis subsp. affinis Cara Witte 2007-6-4 184 Humboldt Cold Spring. 0.5 mile S of Titlow Hill. 1386 Comment
  JEPS103931  Castilleja affinis subsp. litoralis T. I. and F. M. Chuang 1991-7-8 7874 Humboldt Ca 2 mi SW of Orick. Comment
  JEPS88811  Castilleja affinis subsp. litoralis T. I. and F. M. Chuang 1991-7-8 7874 Humboldt ca 2 mi sw Orick Comment
  UCSB26617  Castilleja ambigua Havlik, Neil 1968-8-21 Humboldt Samoa, west of Eureka Comment
  HSC90264  Castilleja ambigua subsp. humboldtiensis Jean Hanson 1980-5-24 69 Humboldt Indian (Gunther) Island, Humboldt Bay, Eureka, W end of Island, SW shore, 25 ft. from high tide line 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
  UC1238991  Castilleja applegatei subsp. martinii Freed W. Hoffman 1949-7-15 3009 Humboldt e slope Mule Slide (a little s of Blue Ridge); North Coast Ranges, Mt. Lassic Area Comment
  JEPS24219  Castilleja applegatei subsp. pinetorum Peter H. Raven with R. Snow 1958-7-20 13636 Humboldt 2.0 mi s junction of Titlow Hill and Friday Ridge roads (near Grouse Mountain) Comment
  RSA167243  Castilleja applegatei subsp. pinetorum Joseph P. Tracy 1950-7-2 18974 Humboldt Near top of ridge, 1 mile south of Grizzly Camp. Comment
  HSC56150  Castilleja arachnoidea G. L. Clifton, Griswold 1979-8-1 11999 Humboldt Near N Trinity Mtn., close to the town of Hoopa. 1798 Comment
  UC168996  Castilleja attenuata Mrs. M. H. Manning May 1902 Humboldt Hupa Comment
  JEPS108698  Castilleja exserta C. Sander 2005-8-16 CA 330 81 Humboldt Manila Dunes 3 Comment
  HSC35593  Castilleja pruinosa Thomas W. Nelson, Jane P. Nelson, James Nelson 1975-7-15 2004 Humboldt French Camp, Bald Hills. Comment
  HSC73640  Castilleja pruinosa M. A. Baker 1980-7-23 3169 Humboldt Near Orleans Mtn. 1859 Comment
  UC1502126  Ceanothus R. Sutherland 1975-7-1 3 .1.7 75 Humboldt along Baker Creek; Garberville Quad., along Baker Creek 335 Comment
  RSA758814  Ceanothus arcuatus D. H. Wilken, E. L. Painter 2007-6-4 16738 Humboldt Titlow Road, 1.3 linear km southwest of summit of Horse Mountain, west of head of Horse Mountain Creek. 1325 Comment
  HSC70378  Ceanothus cuneatus M. A. Baker 1980-6-7 1789 Humboldt Near Brush Mtn. 1128 Comment
  UCD112090  Ceanothus cuneatus Thomas W. Nelson; James L. Nelson 1980-6-10 5444 Humboldt along branch road off Swayback Ridge Road, 0.5 mile east of junction. 1371 Comment
  UC249581  Ceanothus cuneatus var. cuneatus Joseph P. Tracy 1922-4-30 5998 Humboldt near Willow Creek; Northern Coast Ranges, Trinity River Valley 152 Comment
  UC1070753  Ceanothus incanus A. E. Wieslander 1931-5-22 218 Humboldt Wilder Ridge Comment
  UC1070754  Ceanothus incanus A. E. Wieslander 1931-5-22 219 Humboldt Wilder Ridge Comment
  POM118616  Ceanothus incanus Marcus E. Jones 1924-4-28 s.n. Humboldt Sagtorville Comment
  UC33626  Ceanothus integerrimus Chesnut and Drew 1888-7-25 Humboldt Comment
  UC33627  Ceanothus integerrimus Chesnut and Drew 1888-7-9 Humboldt Kneeland Prairie Comment
  CAS-BOT-BC51209  Ceanothus parryi Mrs. E. C. Suttiffe 1933-6-3 s.n. Humboldt Redwood Highway, west Humboldt County Comment
  HSC43210  Ceanothus parryi R. Sutherland 1975-4-22 9 .22475 Humboldt Near China Creek at county rd. 207 Comment
  HSC41346  Ceanothus pumilus Brad Klipfel 1974-9-17 575 Humboldt Horse Mtn. Comment
  HSC43228  Ceanothus pumilus R. Sutherland 1976-4-25 3 .25476 Humboldt 622 Comment
  HSC59633  Ceanothus pumilus J. P. Smith, J. O. Sawyer 1974-6-2 7654 Humboldt Below summit of Horse Mtn. 1494 Comment
  HSC98122  Ceanothus pumilus Cara Witte 2007-5-24 118 Humboldt Horse Mountain Botanical Area. Along 6N36. Approximately .6 miles southeast from Radio Towers. 1476 Comment
  HSC101668  Ceanothus thyrsiflorus J. P. Smith, J. O. Sawyer 2011-4-23 13129 Humboldt Kings Peak Road, 3.2 miles from its junction with Shelter Cove Rd Comment
  UC1193280  Ceanothus thyrsiflorus R. H. Neuns 1950-10-17 142 Humboldt Bear Creek Road 6 mi n Shelter Cove; Quad. 28D4, Bear Creek Rd, n of Shelter Cove 609 Comment
  UC275283  Ceanothus velutinus Joseph P. Tracy 1923-10-28 6590 Humboldt Bald Mountain 762 Comment
  HSC55662  Ceanothus velutinus var. velutinus Overton, Butler 1979-7-24 9803 Humboldt Near Black Rock, close to the town of Willow Creek 1463 Comment
  UC582508  Centaurea X moncktonii Joseph P. Tracy 1933-8-22 12973 Humboldt at Eureka Comment
  CDA7083  Centaurea calcitrapa T. C. Fuller 1960-8-25 4974 Humboldt Around Pacific Lumber Company barn, across Eel River from South Fork. 0 Comment
  CDA42256  Centaurea diffusa R. Spadoni, Green 2002-10-9 PDR P 070865 Humboldt Northwestern California; Pacific Lumber Co, Scotia. 0 Comment
  CAS-BOT-BC272099  Centaurea melitensis Carl D. Duncan 1920-9-22 s.n. Humboldt Hoopa Valley Comment
  UC1222948  Centaurea solstitialis Joseph P. Tracy 1948-9-20 18216 Humboldt vicinity of Hosler Creek; Hoopa Valley, Hosler Creek 91 Comment
  UC153952  Centaurium davyi Joseph P. Tracy 1907-7-4 2585 Humboldt 0.5 mi n mouth of Little River; Northern Coast Ranges 15 Comment
  SEINET200746  Centaurium erythraea Joseph P. Tracy 1934-7-9 13347 Humboldt Dobbyn Creek. Comment
  UC562308  Centaurium muehlenbergii Joseph P. Tracy 1934-7-9 13347 Humboldt Dobbyn Creek 152 Comment
  JEPS46931  Centaurium muehlenbergii Joseph P. Tracy 1931-8-9 9610 Humboldt Blue Slide Northern Coast Ranges, Van Duzen River 91 Comment
  RSA46684  Cephalanthera austiniae Doris K. Kildale 1937-7-18 15139 Humboldt Horse Mt. Comment
  UCD98070  Cerastium glomeratum Joseph P. Tracy 1948-4-11 17964 Humboldt South Fork Station, on Eel River. 48 Comment
  CAS-BOT-BC179477  Cercis occidentalis Carl D. Duncan 1920-9-22 s.n. Humboldt Hoopo Valley Comment
  HSC56986  Chamaecyparis lawsoniana Overton, Butler 1979-7-23 9534 Humboldt Near Titlow Hill, close to the town of Willow Creek. 1280 Comment
  CDA30234  Chamaesyce serpyllifolia M. K. Beyers, I. Shepardson 2009-9-13 236 Humboldt In dry portion of the eastern side of the Eel River, east of State Route 254 (Avenue of the Giants) and Highway 101. Just west of the unincorporated community of Shively. 0 Comment
  JEPS52356  Chamaesyce serpyllifolia Joseph P. Tracy 1916-9-5 4769 Humboldt 4 mi above mouth of river; Nothern Coast Ranges, South Fork of Eel River Comment
  SBBG83773  Chamerion angustifolium J. D. Hobson -Jul-1966 Humboldt S end of sand spit forming Eureka Harbor, 10 mi S of Eureka Comment
  HSC55122  Chamerion angustifolium subsp. circumvagum G. L. Clifton, Griswold 1979-8-1 11922 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1692 Comment
  UC314615  Chamerion angustifolium subsp. circumvagum Joseph P. Tracy 1926-7-25 7755 Humboldt Big Lagoon Northern Coast Region 6 Comment
  HSC72962  Cheilanthes gracillima Gail Newton 1980-7-14 1485 Humboldt Near Last Chance Ridge. 1219 Comment
  RSA44502  Chenopodium ambrosioides var. ambrosioides H. M. Pollard 1947-8-31 s.n. Humboldt Klamath River near Wilson Creek, Orleans region. Comment
  JEPS59733  Chenopodium botrys W. L. Jepson 1932-7-30 16461 Humboldt Bull Creek 121 Comment
  RSA246908  Chenopodium botrys R. F. Thorne, P. Everett 1965-8-8 35263 b Humboldt N. edge of Eureka, E. of Hwy. 101 5 Comment
  HSC48840  Chimaphila menziesii Brad Klipfel 1973-7-15 197 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC61129  Chimaphila menziesii Jimerson, J. Pageau 1979-6-13 555 Humboldt Near Slate Creek Butte, close to the town of Orleans 549 Comment
  HSC71674  Chimaphila menziesii M. A. Baker 1980-6-26 2390 Humboldt Near Sims Creek 610 Comment
  HSC54228  Chimaphila umbellata Griswold, Butler 1979-7-12 7294 Humboldt Near Lone Pine Ridge, close to the town of Willow Creek. 1478 Comment
  HSC55214  Chimaphila umbellata Walter Overton 1979-8-1 12371 Humboldt Near Mill Creek, Middle Fork, close to the town of Hoopa. 1341 Comment
  UC1197599  Chimaphila umbellata Joseph P. Tracy 1934-8-29 13634 Humboldt forest near McKay Camp (S. Fork Mt.); Northern Coast Ranges, S. Fork Mt. 1676 Comment
  UC176054  Chimaphila umbellata Joseph P. Tracy 1913-7-20 4368 Humboldt near Three Creeks on Willow Creek Rd.; N. Coast Ranges 1066 Comment
  UCD117385  Chimaphila umbellata Roman Gankin 1965-8-5 546 Humboldt On Kings Mountain Road, 2.2 miles east of road end, Pacific Range Wilderness Area. Comment
  SEINET3992219  Chlorogalum pomeridianum Unknown 1946-7-7 17611 Humboldt Trinity River Valley, at Willow Creek 152 Comment
  CAS-BOT-BC497671  Chlorogalum pomeridianum L. R. Abrams 1918-6-16 7191 Humboldt Willow Creek Comment
  HSC100553  Chlorogalum pomeridianum Carl C. Marshall Jul 1886 260 Humboldt Throughout the Coast Range, Humboldt Bay. Comment
  HSC104293  Chloropyron maritimum subsp. maritimum Samantha E. Andres 2016-7-6 22 Humboldt Manila; trail along the disc golf course to Humboldt Bay 2 Comment
  CAS-BOT-BC236920  Chloropyron maritimum subsp. palustre Malcom A. Nobs; S. Galen Smith 1949-8-3 1200 Humboldt Bordering Humboldt Bay, ca. 2 miles north of Eureka 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
  CHSC23196  Chrysolepis chrysophylla Robert F. Thorne 1965-8-5 35134 b Humboldt Mt. Chamisal: below summit. 746 Comment
  HSC8061  Chrysolepis chrysophylla Doris K. Kildale 1926-8-22 2570 Humboldt Bald Hills, beyond E end of cabin at Tomlinson's 716 Comment
  CAS-BOT-BC36480  Chrysolepis chrysophylla Ella Dales Cantelow 1938-10-22 2180 Humboldt Near Red Cap Creek, SW of Orleans Comment
  UC204118  Chrysosplenium glechomifolium Joseph P. Tracy 1918-4-28 4808 Humboldt Eureka; Northern Coast Ranges 0 Comment
  UC302104  Chrysosplenium glechomifolium Joseph P. Tracy 1926-5-22 7505 Humboldt Prairie Creek; Northern Coast Ranges 152 Comment
  UC1198648  Cicendia quadrangularis Joseph P. Tracy 1912-6-9 3681 Humboldt Alton; Northern Coast Region 30 Comment
  UC642314  Cicuta douglasii Joseph P. Tracy 1938-9-25 16169 Humboldt Bald Mountain, at Lake Prairie Lake Prairie; Bald Mountain, Lake Prairie 1066 Comment
  CAS-BOT-BC184830  Cinna latifolia Joseph P. Tracy 1935-7-25 14244 Humboldt Trinity Summit. Lower end of Brett Hole. 1584 Comment
  UC1145089  Cinna latifolia Joseph P. Tracy 1936-8-7 15087 Humboldt head of Little Hors-Linto Creek Trinity Summit; , head of Little Hors-Linto Creek 1371 Comment
  SD113203  Cirsium arvense Darley F. Howe 1959-8-4 2801 Humboldt 78.5 miles west of Weaverville on Highway 299. 609 Comment
  HSC89523  Cirsium brevistylum M. Roantree 1985-6-11 88 Humboldt W side of Trinidad Head Comment
  HSC93524  Cirsium douglasii var. douglasii Gordon Leppig 1998-6-1 879 Humboldt Horse Mtn., Titlow Hill Rd. 1220 Comment
  OBI36336  Cirsium occidentale var. candidissimum David J. Keil 1983-7-1 17273 Humboldt Ca 13 mi W of jctn US 101 along Bull Crk Flats Rd Comment
  UC129512  Cirsium occidentale var. candidissimum Joseph Burtt Davy and Walter C. Blasdale 1899-6-7 5383 Humboldt near Harris Comment
  OBI81546  Cirsium occidentale var. candidissimum Jill M. Bushakra, John Bushakra 2000-6-16 41 Humboldt Across Hwy 101/Hwy 271 from the Elfin Glen Gift Shop, north of the Standish-Hickey Prk. Opening in coniferous forest. 213 Comment
  CAS-BOT-BC288721  Cirsium remotifolium Joseph P. Tracy 1938-7-6 16025 Humboldt Big Lagoon 30 Comment
  UC1223062  Cirsium remotifolium Joseph P. Tracy 1941-8-12 16976 Humboldt 2 mi s of town of Field's Landing 6 Comment
  RSA18145  Cirsium vulgare C. B. Wolf 1927-8-22 803 Humboldt Big Lagoon. Comment
  HSC89489  Cirsium vulgare P. A. Daly 1986-2-28 65 Humboldt Trinidad Head, along trail 61 Comment
  CAS-BOT-BC160958  Clarkia amoena subsp. amoena Doris K. Kildale 1927-7-25 3836 Humboldt Table Bluff Comment
  CAS-BOT-BC160968  Clarkia amoena subsp. amoena C. Hart Merriam 1922-6-1 s.n. Humboldt Fortuna Comment
  CAS-BOT-BC160975  Clarkia amoena subsp. amoena Joseph P. Tracy 1909-7-31 3026 Humboldt Kneeland Prairie 762 Comment
  JEPS43735  Clarkia amoena subsp. amoena W. L. Jepson 1936-8-18 17940 Humboldt Wildcat Ridge Comment
  CAS-BOT-BC164182  Clarkia concinna Doris K. Kildale 1925-5-24 873 Humboldt Briceland Bridge 1/2 mile west of Garberville 114 Comment
  CAS-BOT-BC172511  Clarkia purpurea subsp. quadrivulnera Volney Rattan 1878-1-1 s.n. Humboldt Unspecified Comment
  JEPS1957 Image available Clarkia purpurea subsp. viminea W. L. Jepson 1902-8-13 1971 Humboldt near Redwood Creek; Hupa Road; Hupa Road, near Redwood Creek, Humboldt Co. Comment
  CAS-BOT-BC164824  Clarkia rhomboidea Henry M. Pollard 1948-8-4 s.n. Humboldt Orleans Mt. 1371 Comment
  UC1198505  Clarkia rhomboidea Joseph P. Tracy 1913-6-20 4214 Humboldt opposite Buck Mountain (Dinsmore's Ranch); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  RSA256474  Clarkia rhomboidea Joseph P. Tracy 1937-7-24 15527 Humboldt Trinity Summit, 2 miles SE of Devil s Hole 1524 Comment
  UCR198252  Clarkia rubicunda Dean Kelch 2007-7-25 07- 507 Humboldt North Coast Range, along Hwy 29 between Lord-Ellis Summit and Hwy 96 558 Comment
  UC161030  Claytonia exigua subsp. exigua Joseph P. Tracy 1910-4-24 3128 Humboldt Ocean Beach at Humboldt Bay; Northern Coast Region, Humboldt Bay Comment
  HSC17686  Claytonia perfoliata Francis Winter 1960-4-24 Humboldt 2 mi. N of Hwy. 299, on Redwood Creek Rd. 396 Comment
  UC902106  Claytonia perfoliata subsp. intermontana Joseph P. Tracy 1949-6-6 18306 Humboldt ne of Hawkins Bar (Happy Camp Mountain); Trinity Summit Range, Happy Camp Mountain 1280 Comment
  CAS-BOT-BC440094  Claytonia perfoliata subsp. perfoliata Doris Kildale 1931-5-10 10547 Humboldt Snow Camp Comment
  UCD100846  Claytonia rubra subsp. depressa Linda M. Barker 1976-2-22 1318 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  HSC39620  Claytonia rubra subsp. rubra Thomas W. Nelson 1976-6-15 2723 Humboldt Along old trail from lookout to Blocksburg 1585 Comment
  UC672997  Claytonia rubra subsp. rubra Joseph P. Tracy 1930-7-16 8939 Humboldt near McKay Camp; South Fork Mountain 1676 Comment
  HSC65469  Claytonia saxosa M. A. Baker 1980-6-8 1918 Humboldt Near Buck Flat. 1554 Comment
  HSC71810  Claytonia saxosa Thomas W. Nelson, Jane P. Nelson 1980-6-27 5952 Humboldt Six Rivers National Forest, saddle between two peaks E of Mt. Lassic 1768 Comment
  HSC104049  Claytonia sibirica E. R. Fyer 2015-4-29 28 Humboldt Arcata Community Forest 92 Comment
  CAS-BOT-BC443903  Claytonia sibirica A. A. Heller 1937-6-10 16274 Humboldt At Bishop Pine Lodge, 3 miles north of Trinidad on U. S. Highway #101. Comment
  HSC4886  Claytonia sibirica J. O. Sawyer 1968-9-11 732 Humboldt Along Mill Creel 1524 Comment
  UC418984  Claytonia sibirica H. E. Parks May 1930 742 Humboldt Upper Van Duzen River Comment
  UCD100884  Claytonia sibirica Joseph M. DiTomaso 1976-3-28 355 Humboldt Highway 299 near summit, 8 miles west of Willow Creek. Comment
  CAS-BOT-BC92592  Clematis ligusticifolia J. Clausen 1932-9-19 697 Humboldt Dyerville, Eel River. Comment
  UCD124939  Clinopodium douglasii Linda M. Barker 1976-6-22 1614 Humboldt Lanphere-Christensen Dunes, 3 miles west of Arcata. Comment
  CAS-BOT-BC499337  Clintonia andrewsiana Mrytle Paulson 1918-4-28 s. n. Humboldt Eureka Comment
  HSC15447  Clintonia andrewsiana D. E. Anderson 1963-5-25 2478 Humboldt 4 mi. N of Capetown Comment
  HSC59739  Clintonia andrewsiana Clark L. Miller 1979-5-15 1132 Humboldt Jolly Giant Creek behind HSU dorms Comment
  CHSC70001  Coincya monensis Jim Belsher 1997-2-13 1 Humboldt Collected in the lot East Southeast of the Manila Community Services District sewage pump station. Empty lot. 6 Comment
  JEPS115074  Coincya monensis subsp. recurvata Andrea Pickart 2009-2-20 729 Humboldt Manila Dunes; End of Lupine Ave. 15 Comment
  CAS-BOT-BC238026  Collinsia Doris Kildale Gillespie 1931-6-7 10601 Humboldt South Fork Mt., Blake Lookout 1726 Comment
  JEPS25054  Collinsia bartsiifolia var. bartsiifolia Joseph P. Tracy 1919-5-31 5140 Humboldt near Willow Creek; Northern Coast Ranges, Trinity River Valley 152 Comment
  SEINET12268895  Collinsia grandiflora H. P. Chandler 1901-1 1251 Humboldt Redwood Belt, North Coast Ranges 457 Comment
  UC1196748  Collinsia grandiflora Joseph P. Tracy 1930-7-6 8854 Humboldt Valley of South Yager Creek 762 Comment
  RSA21322  Collinsia linearis Carl B. Wolf 1937-8-13 9216 Humboldt North coast range, 8 mi. east of Hoopa Valley on new road towards Trinity summit. 1220 Comment
  RSA30612  Collinsia linearis Lincoln Constance, R. C. Rollins 1942-5-12 2888 Humboldt Klamath River 10 miles northeast of Weitchpec. 122 Comment
  HSC70376  Collinsia parviflora M. A. Baker 1980-6-7 1783 Humboldt Near Brush Mtn. 1128 Comment
  UC176045  Collinsia parviflora Joseph P. Tracy 1913-6-17 4162 Humboldt Northern Coast Ranges, Buck Mountain near the summit Buck Mountain; Northern Coast Ranges, Buck Mountain 1676 Comment
  JEPS26356  Collinsia sparsiflora var. sparsiflora Joseph P. Tracy 1916-5-2 4685 Humboldt garden Eureka; North Coast Ranges 762 Comment
  HSC56166  Collomia grandiflora G. L. Clifton, Griswold 1979-8-1 12053 Humboldt Near N Trinity Mtn., close to the town of Hoopa. 1798 Comment
  HSC56220  Collomia grandiflora G. L. Clifton, Griswold 1979-8-2 12247 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  RSA411155  Collomia grandiflora Anstruther Davidson 1918-07 3352 Humboldt Eel River. Comment
  HSC56008  Collomia heterophylla Overton, Butler 1979-7-31 11489 Humboldt Near Tish Tang A Tang Creek, S Fork, close to the town of Hoopa 1417 Comment
  RSA120682  Collomia heterophylla S. S. Tillett 1956-7-6 610 Humboldt S. slope along Bar Shanty Road, 5 mi. from Orleans. 488 Comment
  UC133644  Collomia heterophylla J. P. Tracy 1909-5-2 2962 Humboldt immediate vicinity Eureka 0 Comment
  UC1470711  Collomia heterophylla Barbara Ertter with Thomas J. Delendick 1987-5-16 6944 Humboldt on s side Hwy 299 above Willow Creek (ca 3 mi e of Berry Summit, ca 20 air mi e of Arcata, near large volcanic rock) 800 Comment
  HSC102590  Collomia tracyi M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-28 1577 Humboldt Slopes above Bret Hole and below trail 6E18, 1.5 km SSW of Trinity Summit. 1778 Comment
  HSC55668  Collomia tracyi Overton, Butler 1979-7-25 9869 Humboldt Near Sims Mtn., close to the town of Willow Creek 1295 Comment
  UC52410  Collomia tracyi Joseph Burtt Davy and Walter C. Blasdale 1899-6-19 5675 Humboldt dry rocky places on summit North Coast Ranges, Hoopa Mountain Comment
  HSC37959  Convolvulus arvensis Peter Sorensen 1976-6-12 Humboldt Woodley Island, Humboldt Bay Comment
  UC902062  Convolvulus arvensis Joseph P. Tracy 1949-7-31 18400 Humboldt Willow Creek Trinity River Valley 152 Comment
  HSC25946  Convolvulus arvensis Thomas W. Nelson 1970-12-1 289 Humboldt 1 mi. N of the N Rio Dell bridge over the Eel River Comment
  HSC45026  Conyza canadensis R. Sutherland 1976-8-19 7 .19876 Humboldt 259 Comment
  HSC48985  Coptis laciniata M. A. Baker 1979-5-25 765 Humboldt Comment
  HSC73776  Corallorhiza maculata M. A. Baker 1980-6-7 1768 Humboldt Near Brush Mtn. 1128 Comment
  JEPS64347  Corallorhiza maculata W. L. Jepson 1902-6-28 1947 Humboldt Hupa Rd Green Point Ranch (ridge) 914 Comment
  HSC16586  Corallorhiza maculata Doris K. Kildale 1926-5-2 1845 Humboldt Bald Mtn. road, between Bald Mtn. House and junction of Redwood Creek Road. Comment
  HSC95706  Corallorhiza mertensiana Juha Pykala, D. H. Norris 1987-6-10 1467 Humboldt 4.5 mi. N of Weitchpec, Blue Lake 838 Comment
  JEPS6033  Cordylanthus maritimus subsp. palustris Joseph P. Tracy 1938-7-15 16064 Humboldt borders of salt marsh at Fields Landing, around Humboldt Bay Humboldt Bay; Northern Coast Region 3 Comment
  HSC96783  Cordyline australis Gordon Leppig 2004-6-8 2165 Humboldt Eureka, abandoned railroad tracks at Second St. and Commercial Ave. 2 Comment
  CAS-BOT-BC101147  Corethrogyne filaginifolia W. R. Dudley 1899-6-1 s.n. Humboldt Eureka [Penninsula] Peninsula Comment
  JEPS15870  Corethrogyne filaginifolia Joseph P. Tracy 1938-7-15 16059 Humboldt sandy fields at Bucksport (at Eureka); Eureka Comment
  CAS-BOT-BC212013  Cornus nuttallii Doris K. Kildale 1927-5-1 3118 Humboldt Blocksburg Comment
  RSA697172  Cornus nuttallii J. R. Bruff 1937-8-17 919 Humboldt Richardson Grove. Comment
  UC183572  Cornus sericea subsp. sericea Joseph P. Tracy 1912-10-20 4010 Humboldt Alton Northern Coast Region, Alton 30 Comment
  RSA0019462  Cornus sessilis H. M. Pollard 1948-7-27 s.n. Humboldt Mouth of Red Cap Creek near Orleans. Comment
  UC1199212  Coronopus didymus Joseph P. Tracy 1946-5-30 17540 1/2 Humboldt vicinity of Carlotta 30 Comment
  UC161494  Coronopus didymus Joseph P. Tracy 1901-7-31 1234 Humboldt near Hydesville; Northern Coast Region 60 Comment
  BLMAR492  Corylus cornuta subsp. californica Jennifer Wheeler 2009-4-30 492 Humboldt King range, Hidden Valley trail; near overlook Comment
  CAS-BOT-BC180305  Corylus cornuta subsp. californica Carl D. Duncan 1920-9-27 s.n. Humboldt Hoopa Comment
  HSC69750  Cotula australis Thomas W. Nelson 1977-10-10 3757 Humboldt Along 6th St. between G & H Sts.; Eureka Comment
  UCD130903  Cotula coronopifolia H. E. Parks 1941-9-1 24211 Humboldt Little River State Park. Comment
  UC166027  Crassula connata var. subsimplex Joseph P. Tracy 1910-4-24 3125 Humboldt sand dunes of Ocean Beach at Humboldt Bay; Northern Coast Region, , Ocean Beach Comment
  HSC104401  Crataegus gaylussacia Jim McIntosh 2012-5-22 Humboldt Klamath Mountains; southern Siskiyou Mtns., adjacent to north side of State Route 169 at Milepost 22.09; 200 ft. above Klamath River. 96 Comment
  SD62065  Crepis capillaris Darley F. Howe 1965-8-7 Humboldt Orick Comment
  UC1199453  Crepis capillaris Joseph P. Tracy 1919-5-31 5139 Humboldt near mouth of Willow Creek; Northern Coast Ranges, valley of Trinity River 152 Comment
  UC1199454  Crepis capillaris Joseph P. Tracy 1914-6-14 4501 Humboldt Carlotta Hydesvill (near Hydesville); Northern Coast Region 60 Comment
  RSA246937  Crepis capillaris R. F. Thorne, Percy C. Everett 1965-8-8 35236 Humboldt N. edge of Eureka, E. of Hwy. 101 5 Comment
  RSA47135  Crepis capillaris Doris K. Kildale 1925-6-29 938 Humboldt Van Duzen R. near Alton Comment
Read comments
Jul 10 2009
  UC1223025  Crepis pleurocarpa Joseph P. Tracy 1947-7-9 17846 Humboldt Horse Mountain; top 1432 Comment
  CDA2722  Crocosmia X crocosmiiflora T. C. Fuller 1968-7-3 17446 Humboldt Northwest corner of overpass of Hwy 101 freeway to Garberville, 1 miles south of Fields Landing. 0 Comment
  HSC91877  Crocosmia X crocosmiiflora E. Mackey 1986-10-7 Humboldt Patrick's Point State Park, picnic area near parking lot for Ceremonial Rock Comment
  UC1103235  Crypsis vaginiflora Joseph P. Tracy 1930-10-19 9231 Humboldt Alton to Fortuna; Eel River 15 Comment
  HSC57201  Cryptantha affinis Griswold, Butler 1979-7-10 7107 Humboldt Near Board Camp Mtn., close to the town of Willow Creek. 1350 Comment
  HSC98004  Cryptantha affinis Cara Witte 2007-7-20 552 Humboldt Board Camp Butte. Forest Serivce Road 4E27. 1502 Comment
  UC667006  Cryptantha affinis Joseph P. Tracy 1939-7-9 16335 Humboldt Snow Camp 1402 Comment
  SBBG28775  Cryptantha torreyana L. Constance, R. C. Rollins 1942-5-11 Humboldt Hoopa Valley 5 mi S of Hoopa 121 Comment
  UC79506  Cryptantha torreyana J. W. Blankinship 1893-6-29 Humboldt Eel River Comment
  HSC55128  Cryptogramma acrostichoides G. L. Clifton, Griswold 1979-8-1 11933 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1692 Comment
  UC902066  Cuscuta occidentalis Joseph P. Tracy 1949-8-4 18410 Humboldt Mud Springs Trinity Summit 1341 Comment
  UC902076  Cuscuta occidentalis Joseph P. Tracy 1949-8-4 18407 Humboldt Mud Springs Trinity Summit 1341 Comment
  HSC20640  Cymbalaria muralis A. D. Sajecki 1967-7-24 15 Humboldt Behind H.S.C. Campus Comment
  BLMAR215  Cynoglossum grande Jennifer Anthony-Wheeler 1996-7-9 215 Humboldt Pilot ridge., growing in shaged area in woodland, primarily beneath Oregon Oak 1280 Comment
  UC1040573  Cynosurus cristatus L. T. Burcham 1956-7-19 341 Humboldt 1.5 mi nw Petrolia 152 Comment
  JEPS64088  Cyperus bipartitus Joseph P. Tracy 1938-8-14 16113 Humboldt mt. slopes w. of its mouth S. Fork Trinity R. 304 Comment
  HSC7210  Cyperus eragrostis D. E. Anderson 1963-9-29 2848 Humboldt Fish Lake Comment
  UCR3545  Cyperus eragrostis David Whistler, H. M. Whistler 1964-7-29 640729- 2 Humboldt North Coast Range, US 101, [South Fork Eel River] across the street from Myers Flat Store 63 Comment
  SEINET200970  Cyperus melanostachyus Joseph P. Tracy 1920-8-15 5383 Humboldt Klamath River at Bluff Creek. 152 Comment
  CAS-BOT-BC114195  Cyperus strigosus Henry M. Pollard 1945-8-27 s.n. Humboldt Near Orleans, Pond near Harley place. Comment
  SEINET200683  Cypripedium montanum Joseph P. Tracy 1918-5-26 4937 Humboldt Redwood Creek at foot of Grouse Mt. 610 Comment
  HSC102614  Cystopteris fragilis M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-28 1601 Humboldt Slopes above Bret Hole and below trail 6E18, 1.5 km SSW of Trinity Summit. 1778 Comment
  CAS-BOT-BC70552  Cystopteris fragilis Arnold Tiehm 2000-8-30 13381 Humboldt Santa Rosa Range, Buckskin Mountain Comment
  UC440178  Cystopteris fragilis Joseph P. Tracy 1920-5-18 5317 Humboldt along Eel River from S Fork to Scotia (Bull Creek); Northern Coast Ranges 60 Comment
  HSC47796  Dactylis glomerata M. A. Watkins 1978-6-10 3 Humboldt East side of the 7th Street overpass of Hwy 101 Comment
  HSC9529  Dactylis glomerata John Warner Hosking 1966-8-6 Humboldt Fern Lake, behind Humboldt State College campus, Arcata Comment
  SEINET3128860  Danthonia californica J. B. Davy 1899-5-25 5056 Humboldt Ukiah Comment
Read comments
Dec 29 2015
  UCD60699  Danthonia californica var. americana A. Murphy; R. Tofsrud 1947-5-20 31 Humboldt Baker Ranch, 10 mi. N of Bridgeville. Comment
  RSA293102  Danthonia californica var. californica J. P. Smith 1977-7-3 9231 Humboldt Road to Fish lake (Forest Service Road 13N01), 3.5 miles from its junction with State Route 36. 488 Comment
  UC1152020  Danthonia unispicata Joseph P. Tracy 1951-6-26 19571 Humboldt Snow Camp and Twin Lakes vicinity Comment
  UC1198873  Darmera peltata Joseph P. Tracy 1932-9-18 10806 Humboldt Blue Slide Northern Coast Ranges, Van Duzen River (on the Van Duzen River) 91 Comment
  UC1198874  Darmera peltata Joseph P. Tracy 1935-9-29 14755 Humboldt Blue Slide Van Duzen River (on the Van Duzen River) 91 Comment
  HSC91939  Daucus carota E. Mackey 1986-12-18 Humboldt Patrick's Point State Park, entrance to park along Patrick's Point Drive Comment
  SEINET3823243 Image available Daucus pusillus J. P. Tracy 1909-7-18 3021 Humboldt Sand Hills of Ocean Beach at Samoa, opp. Eureka Comment
  UCD127407  Daucus pusillus Linda M. Barker 1976-5-13 1486 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  UC1196324  Delphinium andersonii Joseph P. Tracy 1935-7-24 14190 Humboldt rocky exposed places near Ranger Station; Trinity Summit 1828 Comment
  UC160909  Delphinium decorum subsp. decorum J. P. Tracy 1910-4-17 3119 Humboldt bluff back of Bucksport; immediate vicinity of Eureka 0 Comment
  HSC95837  Delphinium decorum subsp. tracyi Kevin Thomas 2004-4-26 14 Humboldt Titlow Hill Rd. Comment
  UC1005604  Delphinium decorum subsp. tracyi Frank W. Gould 1939-5-29 837 Humboldt in wet meadow near ski hut; Horse Mountain 1005 Comment
  CAS-BOT-BC10311  Delphinium hesperium Harley Pierce Chandler 1901-6-1 1410 Humboldt Kalmath River 304 Comment
  HSC24965  Delphinium hesperium R. Spellenberg 1965-6-14 1139 Humboldt 13 mi. W of Willow Creek along Hwy. 299 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
  UC9180  Delphinium hesperium subsp. pallescens Harley P. Chandler June 1901 1410 Humboldt Klamath River North Coast Ranges 304 Comment
  HSC56090  Delphinium menziesii G. L. Clifton, Griswold 1979-7-31 11783 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa. 1845 Comment
  HSC24973  Delphinium menziesii Francis Winter 1960-5-6 Humboldt Little River State Park, N of Arcata Comment
  CAS-BOT-BC9959  Delphinium nudicaule Volney Rattan 1879-1-1 s.n. Humboldt Hoopa Valley Comment
  UC1225744  Delphinium nudicaule Joseph P. Tracy 1946-6-15 17565 Humboldt lower slopes Horse Mountain 1066 Comment
  HSC37429  Delphinium trolliifolium B. R. Templeton 1962-5-24 Humboldt W slope of Berry Summit Comment
  HSC46068  Delphinium trolliifolium William J. Ferlatte, B. D. Rogers 1966-6-15 2101 Humboldt Plympton Ranch 915 Comment
  UC668070  Delphinium trolliifolium Joseph P. Tracy 1935-6-23 14000 Humboldt near Coyote Peak; French Camp Ridge 1066 Comment
  CAS-BOT-BC194291  Deschampsia cespitosa subsp. cespitosa Doris K. Kildale 1928-7-29 5922 Humboldt Bear River at Capetown Comment
  UC552716  Deschampsia danthonioides Joseph P. Tracy 1935-6-23 13969 Humboldt French Camp Ridge 1066 Comment
  CAS-BOT-BC201778  Deschampsia elongata Doris K. Kildale 1928-7-1 5309 Humboldt French Camp - Bald Hills - Orick - Martin's ferry road Comment
  HSC9607  Deschampsia elongata J. P. Tracy 1926-6-6 7572 Humboldt Hoopa Mountain. Comment
  HSC99038  Deschampsia elongata Cara Witte 2007-6-13 263 Humboldt Along Forest Service Road 5N04. Near spring by Grouse Mountain. 1583 Comment
  JEPS75420  Deschampsia elongata W. L. Jepson 1932-7-30 16450 Humboldt Bull Creek 121 Comment
  RSA13514  Deschampsia elongata H. E. Parks 1931-05 3646 a Humboldt Big Lagoon Comment
  CHSC32856  Dicentra formosa Lora Anderson 1981-4-26 4 Humboldt Ca. 5 m n of Clam Bach Rd. 0.5 km e of Hwy. 101, 9.5 mi n of Arcata. 0 Comment
  HSC8357  Dicentra formosa D. A. Shally 1965-5-15 51 Humboldt Arcata, 1/4 mi. NE of HSC campus on Jolly Giant Creek Comment
  JEPS9737  Dicentra formosa Joseph P. Tracy 1933-5-28 12414 Humboldt Carlotta; Northern Coast Ranges 60 Comment
  HSC8356  Dicentra formosa Eugene Andreuccetti 1964-4-11 18 Humboldt 1/2 mi. S of Garberville on Hwy. 101 Comment
  CAS-BOT-BC402406  Dicentra formosa subsp. formosa J. P. Tracy 1904-4-17 2013 Humboldt Immediate vicinity of Eureka 152 Comment
  HSC99853  Dicentra formosa subsp. oregana Gail Newton 1980-6-17 203 Humboldt Near Onion Mtn. 217 Comment
  HSC48823  Dicentra uniflora Brad Klipfel, J. O. Sawyer, J. P. Smith 1973-5-27 35 Humboldt Grogan's Hole near N Trinity Mtn. 1829 Comment
  UC1198178  Dichelostemma X venustum Joseph P. Tracy 1947-5-10 17683 Humboldt Miranda, along the South Fork of Eel River South Fork of Eel River 121 Comment
  SEINET12058487  Dichelostemma capitatum F. H. Utech 1988-5-23 88 -291 Humboldt 1.5 mi N of Bridgeville on Road from Bridgeville to Kneeland, along Brown Creek 350 Comment
  UC1198170  Dichelostemma capitatum Joseph P. Tracy 1933-6-18 12607 Humboldt e of Redwood Creek (on Trinity Highway); Berry's Mt. 762 Comment
  UCD139216  Dichelostemma capitatum subsp. capitatum K. Esau 1934-5-7 s.n. Humboldt above Fort Seward. 457 Comment
  SEINET6879154  Dichelostemma congestum Wanda P. Vestal, A. G. Vestal 1937-6-23 s.n. Humboldt Saddle near east end of Bald Hills, southeast of Orick. Comment
  CHSC31277  Dichelostemma ida-maia Mark Stopher 1980-5-28 72 Humboldt Hillside along Hwy 169 1.2 mi e of Martins Ferry Bridge. 170 Comment
  HSC3031  Dichelostemma ida-maia D. E. Anderson 1965-5-15 3710 Humboldt Along Hwy. 96, 1.9 mi. N of Willow Creek, above Trinity River Comment
  HSC43845  Dichelostemma ida-maia Maralyn O'Meara 1974-7-17 554 Humboldt Kneeland Comment
  UC30062  Dichelostemma ida-maia Mrs. M. H. Manning May 1901 6 Humboldt near Hupa Comment
  CAS-BOT-BC501025  Dichelostemma ida-maia M. S. Jussel 1931-5-2 s.n. Humboldt Eureka Comment
  UCD139160  Dichelostemma ida-maia K. Esau 1934-5-7 s.n. Humboldt Above Fort Seward. 609 Comment
  CAS-BOT-BC500981  Dichelostemma multiflorum Doris K. Kildale 1927-7-3 3655 Humboldt Willow Creek Flat 152 Comment
  CAS-BOT-BC150340  Diplacus aurantiacus Doris K. Kildale 1925-6-21 726 Humboldt Briceland Bridge 1/2 mile west of Garberville 114 Comment
  UC1197658  Disporum hookeri Joseph P. Tracy 1937-7-2 15409 Humboldt Trinity Summit, head of Little Hors-Linto Creek Little Hors-Linto Creek; Trinity Summit, Little Hors-Linto Creek 1371 Comment
  JEPS61836  Disporum smithii W. L. Jepson 1932-7-27 16477 Humboldt Bull Creek Comment
  RSA33404  Disporum smithii Doris K. Kildale 1927-3-20 2927 Humboldt Phillipsville Comment
  SEINET3885742  Disporum smithii H. E. Parks, S. T. Parks 1952-1 24452 Humboldt Spruce Cove, Trinidad.; 0 61 Comment
  UC38068  Distichlis spicata Joseph Burtt Davy and Walter C. Blasdale 1899-7-30 6211 Humboldt near Ferndale Comment
  UCD64191  Distichlis spicata G. Douglas Barbe; T. C. Fuller 1974-6-17 1835 Humboldt Lower Pacific Drive, S of sewage plant, W of golf course, at Sail Court, Shelter Cove. 60 Comment
  POM252664  Downingia elegans var. corymbosa Joseph P. Tracy 1927-7-17 8270 Humboldt Three Cabins; lower western foothills of Chaparral Mt.; North Coast Ranges. 457 Comment
  UCSB26681  Drosera rotundifolia Havlik, Neil 1968-8-21 Humboldt South end of Big Lagoon; north of Trinidad Comment
  HSC18756  Drymocallis glandulosa Lincoln Constance 1934-6-15 878 Humboldt Summit of Grasshopper Peak, S Fork Eel River, Bull Creek region 976 Comment
  UC1198682  Drymocallis lactea var. austiniae Joseph P. Tracy 1913-6-17 4192 Humboldt near summit (Buck Mountain); Northern Coast Ranges, Buck Mountain 1524 Comment
  CAS-BOT-BC157793  Drymocallis lactea var. lactea Doris Kildale Gillespie 1931-6-7 10628 Humboldt South Fork Mt., Blake Lookout 1726 Comment
  HSC76237  Drymocallis lactea var. lactea Teresa Prendusi 1981-7-21 271 Humboldt Near Whiteys Peak 1646 Comment
  CAS-BOT-BC71055  Dryopteris expansa Mrs. H. C. Cantelow 1936-5-18 1378 Humboldt 8 mi. N. of Orick Comment
  CAS-BOT-BC71056  Dryopteris expansa Doris K. Kildale 1928-12-23 6761 Humboldt on Orick - Bald Hills road Comment
  UCSB30621  Dryopteris expansa Edwards, David 1974-9-2 Humboldt ca. 5ft N of dirt road, ca. 350 ft from its junction with Fickle Hill Rd., Arcata. 106 Comment
  JEPS109584  Dulichium arundinaceum Dean W. Taylor 2002-9-12 18344 Humboldt Lake Prairie, remnant of the original bog vegetation on the eastern end of the lake 1097 Comment
  UC183727  Dulichium arundinaceum Joseph P. Tracy 1914-9-6 4603 Humboldt between High Prairie and Snow Camp (Bald Mountain); Northern Coast Ranges, Bald Mountain 1219 Comment
  HSC12028  Dysphania ambrosioides D. Santana 1970-10-18 77 Humboldt McKinleyville, Murray Rd. Comment
  SEINET11972028  Echinocystis lobata J. P. Tracy 1951-1 19402 Humboldt Barry Ridge, Kneeland Prairie 762 Comment
  CAS-BOT-BC112840  Eleocharis macrostachya LeRoy Abrams 1922-6-25 8267 Humboldt Big Lagoon, south of Orick Comment
  UC1103658  Eleocharis macrostachya Joseph P. Tracy 1938-6-15 15929 Humboldt 3 mi S of Fields Landing (Salmon Creek Flats) 6 Comment
  UC1100710  Eleocharis pachycarpa Malcolm A. Nobs and S. Galen Smith 1949-8-11 1346 Humboldt marshes on eastern side of Big Lagoon Comment
  HSC102216  Eleocharis suksdorfiana M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 1132 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  HSC58630  Elymus elymoides var. elymoides Overton, Butler 1979-7-31 11484 Humboldt Near N Trinity Mtn., close to the town of Hoopa 1940 Comment
  HSC58661  Elymus elymoides var. elymoides G. L. Clifton, Griswold 1979-7-1 11948 Humboldt Near Horse Trail Ridge, close to the town of Hoopa. 516 Comment
  UC526799  Elymus glaucus Joseph P. Tracy 1932-7-12 10448 Humboldt Corral Prairie Klamath Mountains, Trinity Summit 1524 Comment
  UCD61892  Elymus glaucus A. H. Shunk 1923-7-21 Humboldt Bridgeville. Comment
  HSC102145  Elymus glaucus subsp. glaucus M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-3 1052 Humboldt Patterson Meadows 1566 Comment
  UCD62346  Elymus glaucus subsp. glaucus A. A. Beetle; G. L. Stebbins Jr. 1942-6-1 3454 Humboldt 2 miles north of Orleans. Klamath River. Comment
  HSC9747  Elymus glaucus subsp. virescens J. P. Tracy 1927-6-26 8213 Humboldt Stone Lagoon Comment
  UC1103475  Elymus glaucus subsp. virescens Joseph P. Tracy 1938-6-17 15959 Humboldt s point of Cape (near ocean shore); Cape Mendocino 3 Comment
  HSC9728  Elymus mollis subsp. mollis E. W. Styskel 1964-5-7 82 Humboldt 2 miles S of Samoa near Samoa Rd. Comment
  HSC9733  Elymus mollis subsp. mollis L. M. Malloy 1965-5-16 15 Humboldt Samoa, sand dunes 1/4 mile NW of the corner of Thunder Rd. and the Hard Way. Comment
  HSC102237  Elymus multisetus M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 1161 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  HSC58419  Elymus multisetus Griswold, Butler 1979-7-12 7265 Humboldt Near Cedar Creek, close to the town of Willow Creek 1158 Comment
  HSC102192  Elymus repens M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-4 1106 Humboldt Andy's Camp 1564 Comment
Read comments
Jul 9 2015
  UC1040574  Elymus trachycaulus L. T. Burcham 1956-7-19 342 Humboldt Northeast Capetown; along roadside and on adjacent sheep range. 365 Comment
  UCD62646  Elymus trachycaulus Thomas Nelson; Jane Nelson 1976-7-26 3023 Humboldt Trinity-Humboldt Co. line: Along 1S07 West of Black Lassic. 1615 Comment
  RSA10129  Elymus trachycaulus subsp. trachycaulus Joseph P. Tracy 1926-7-5 7736 Humboldt Valley of South Yager Creek. 762 Comment
  HSC49812  Empetrum nigrum R. York 1979-4-13 220 Humboldt Elks Head, 1 mi. N of Trinidad Comment
  SD90214  Epilobium angustifolium Benjamin C. Stone Jun 1952 129 Humboldt 20 miles south of Klamath. 14 Comment
  RSA647553  Epilobium angustifolium subsp. circumvagum G. F. Orr 1953-8-15 s.n. Humboldt Patrick Point State Park, Trinidad Comment
  SEINET187086  Epilobium brachycarpum P. A. Munz 1936-8-10 14337 Humboldt Roadside Little Van Duzen River 15 miles east of Bridgeville. Comment
  HSC45595  Epilobium ciliatum subsp. ciliatum Diane L. Reed 1978-5-27 141 Humboldt 0.3 mi. up Bair Rd. from Hwy. 299 Comment
  HSC74686  Epilobium ciliatum subsp. ciliatum Gail Newton 1981-8-7 2452 Humboldt Near Board Camp Mtn. 1478 Comment
  UC1197003  Epilobium ciliatum subsp. ciliatum Joseph P. Tracy 1920-8-15 5388 Humboldt Bluff Creek Northern Coast Ranges, Klamath River 152 Comment
  UC1197012  Epilobium ciliatum subsp. ciliatum Joseph P. Tracy 1931-10-11 9714 Humboldt at Willow Creek Northern Coast Ranges, Trinity River Valley 152 Comment
  UC161071  Epilobium ciliatum subsp. ciliatum Joseph P. Tracy 1911-7-5 3323 Humboldt along creek near mouth (creek is tributary of Trinity River); Northern Coast Ranges, Willow Creek 304 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
  UC1951302  Epilobium ciliatum subsp. glandulosum Robert F. Thorne and P. Everett 1965-8-9 35347 Humboldt along Hwy. 101 about 3 mi. N of Eureka. Comment
  HSC103280  Epilobium ciliatum subsp. glandulosum John McRae 2012-9-7 1270 Humboldt Six Rivers National Forest, Lower Trinity District, Forest Service Road 5N10, at the crossing of Willow Creek. 1294 Comment
  HSC49645  Epilobium ciliatum subsp. glandulosum J. P. Smith, Steve Selva 1970-6-30 4138 Humboldt Comment
  SEINET9067301 Image available Epilobium ciliatum subsp. watsonii H. E. Parks, S. T. Parks 1937-1 24050 Humboldt Spruce Cove, Trinidad 64 Comment
  HSC98553  Epilobium densiflorum Cara Witte 2007-8-8 620 Humboldt Buck Flat. Intersection of National Forest 1 and Forest Service Road 5N01. 1547 Comment
  HSC98657  Epilobium densiflorum Cara Witte 2007-7-3 408 Humboldt White Oak Opening. 1242 Comment
  UC505117  Epilobium foliosum Joseph P. Tracy 1928-5-6 8430 Humboldt Willow Creek Northern Coast Ranges, Trinity River Valley 152 Comment
  HSC55085  Epilobium hornemannii G. L. Clifton, Griswold 1979-7-31 11749 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa. 1845 Comment
  CAS-BOT-BC171828  Epilobium oreganum Joseph P. Tracy 1933-7-25 12835 Humboldt Grouse Mountain, North Coast Ranges 1524 Comment
  CAS-BOT-BC171846  Epilobium septentrionale Carl B. Wolf 1927-8-30 1235 Humboldt 2 mi. so. of Petrolia on Matole River near where road crosses river. Comment
  JEPS64369  Epipactis gigantea Lincoln Constance 1934-6-12 858 Humboldt Bull Cr. road and N. bank of S. Fork Eel River; South Fork Eel River, Bull Creek region, Dyerville Comment
  UC429313  Epipactis gigantea P. E. Goddard 1907-7-15 #b 125 Humboldt Van Duzen Mad River (sunny side of river) Comment
  UC667937  Equisetum arvense Joseph P. Tracy 1937-7-2 15391 Humboldt ne of Hawkins Bar Happy Camp Mt.; Trinity Summit Range 1280 Comment
  SEINET200606 Image available Equisetum hyemale J. P. Tracy 1926-9-6 7795 Humboldt Trinity River Valley near the S Fork 183 Comment
  HSC98903  Equisetum laevigatum Cara Witte 2007-7-25 580 Humboldt Forest Service Road 5N10. Approximately 2 miles south from intersection with Forest Service Road 5N41. 1290 Comment
  POM182455  Equisetum laevigatum Joseph P. Tracy 1913-6-16 4142 Humboldt Dinsmore s Ranch, in valley of Van Duzen River. Opposite Buck Mtn. 762 Comment
  HSC99644  Equisetum telmateia subsp. braunii L. Watson, J. Meninga Mar 1991 22 Humboldt Near Manilla, Mad River Slough and Dunes, 0.5 mi. N of parking lot, E of trail Comment
  MACF019709  Equisetum telmateia subsp. braunii C. V. Morton 1955-8-23 27237 Humboldt Roadside near Province Creek State Park entrance Comment
  SEINET10834153  Equisetum telmateia var. braunii Mary Susan Taylor 1977-8-5 Taylor 1430 Humboldt Abundant around bridge over Eel River, at the turnoff from Hwy 1 to Ferndale, in Fernbridge. 2 Comment
  CAS-BOT-BC278518  Eragrostis pilosa var. pilosa Henry M. Pollard 1947-8-30 s.n. Humboldt Near Wilson Creek, Klamath River, Orleans region Comment
  SEINET11836158  Erechtites argutus H. E. Parks, Parks, S. T. 1937-1 24033 Humboldt Spruce Cove, Trinidad 61 Comment
  CAS-BOT-BC291175  Erechtites glomeratus Alice Eastwood 1923-8-14 12319 Humboldt Samoa Comment
  CAS-BOT-BC174186  Eremogone congesta var. congesta Henry M. Pollard 1948-7-31 s.n. Humboldt Orleans Mt. 1828 Comment
  CAS-BOT-BC293488  Erigeron aliceae Joseph P. Tracy 1937-8-12 15660 Humboldt Snow Camp 1402 Comment
  UC581744  Erigeron aliceae Joseph P. Tracy 1930-7-18 9035 Humboldt South Fork Mountain South Fork Mountain (near McKay Camp) 1676 Comment
  HSC44537  Erigeron foliosus var. confinis Brad Klipfel 1973-7-1 145 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  RSA167385  Erigeron foliosus var. mendocinus Joseph P. Tracy 1951-7-24 19625 Humboldt Blue Slide, on Van Duzen River 91 Comment
  HSC5524  Erigeron glaucus J. W. Johnson 1961-8-17 1036 Humboldt Dune fields of W.M. Lanphere Farm, Samoa Peninsula Comment
  HSC67444  Erigeron glaucus J. P. Smith 1971-10-6 4955 Humboldt At the end of Murray Rd., McKinleyville Comment
  SEINET11842961  Erigeron glaucus F. H. Utech 1986-1 86 -408 Humboldt Cape Mendocino, along Pacific Ocean 6 Comment
  UC1199441  Erigeron glaucus Joseph P. Tracy 1913-9-21 4409 Humboldt dunes of ocean beach at Humboldt Bay Comment
  HSC56930  Erigeron inornatus var. inornatus G. L. Clifton, Butler 1979-7-26 9359 Humboldt Near Salmon Mtn., close to the town of Forks of the Salmon 1935 Comment
  HSC98678  Erigeron inornatus var. inornatus Cara Witte 2007-7-26 590 Humboldt National Forest 1 on Kinsey Ridge. 1/4 mile south of intersection with 4N06. Near power poles. 1283 Comment
  CAS-BOT-BC214586  Erigeron philadelphicus Ashley C. Browne 1936-6-11 s.n. Humboldt Patrick's [Patricks] Point State Park Comment
  HSC79512  Erigeron philadelphicus Kenneth Clark 1980-6-14 697 Humboldt Shelter Cove; in stream alluvium of N fork of Dead Man's Gulch 198 Comment
  SD53196  Erigeron philadelphicus Darley F. Howe 1962-5-21 3297 Humboldt 16 miles north of Garberville on Highway 101. 60 Comment
  UC31516  Erigeron philadelphicus var. philadelphicus Hy Melde 1896-2-21 Humboldt Eureka Comment
  CHSC55905  Eriogonum latifolium L. P. Janeway 1987-7-31 2539 Humboldt Vicinity of Eurekal North Spit of Humboldt Bay near the SE corner of Eureka City Airport. 3 Comment
  RSA667221  Eriogonum latifolium George K. Helmkamp, E. A. Helmkamp 2001-7-8 7016 Humboldt North coast: Samoa Peninsula, 2.6 miles S of CA-255 bridge across Humboldt Bay. 15 Comment
  UC774621  Eriogonum latifolium Carl B. Wolf 1937-9-12 9331 Humboldt Clam Beach 7 Comment
  UC1198108  Eriogonum luteolum var. luteolum Joseph P. Tracy 1930-8-3 9142 Humboldt along Van Duzen River opposite Buck Mountain; Van Duzen River 762 Comment
  CAS-BOT-BC261492  Eriogonum nudum var. nudum M. S. Jussel 1931-5-2 116 Humboldt Garberville Comment
  UC1198137  Eriogonum nudum var. nudum Joseph P. Tracy 1917-9-2 4844 Humboldt Grouse Mountain Nothern Coast Ranges, Grouse Mountain 1524 Comment
  RSA12535  Eriogonum nudum var. nudum Carl B. Wolf 1934-7-2 5903 Humboldt Small Lake at Snow Camp. (Mountains east of Korbel). 1372 Comment
  UC203955  Eriogonum nudum var. nudum Joseph P. Tracy 1918-7-3 4987 Humboldt Wilder Ridge Northern Coast Ranges, Kings Peak Range, Wilder Ridge 762 Comment
  UC479118  Eriogonum nudum var. oblongifolium Marcus E. Jones, A. M. 1931-7-12 28806 Humboldt Alton Comment
  CAS-BOT-BC261725  Eriogonum nudum var. oblongifolium Doris K. Kildale 1926-7-22 2422 Humboldt Metropolitan, bluffs near Canyon Park Comment
  UC672902  Eriogonum nudum var. oblongifolium Joseph P. Tracy 1934-6-19 13236 Humboldt vicinity Carlotta 30 Comment
  CAS-BOT-BC269866  Eriogonum nudum var. pubiflorum Henry M. Pollard 1945-8-26 s.n. Humboldt Between Orleans and Camp Creek, Klamath River Canyon Comment
  RSA393303  Eriogonum nudum var. pubiflorum H. M. Pollard 1948-7-26 s.n. Humboldt Near mouth of Camp Creek near Orleans. Comment
  CAS-BOT-BC267970  Eriogonum umbellatum var. argus Henry M. Pollard 1948-8-4 s.n. Humboldt Orleans Mt. 1676 Comment
  HSC98668  Eriogonum umbellatum var. nelsoniorum Cara Witte 2008-7-14 888 Humboldt Horse Mountain Botanical Area. Forest Service Road 6N18. 1431 Comment
  HSC55169  Eriogonum umbellatum var. stellatum Gilbert Muth 1979-8-1 12163 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1677 Comment
  HSC100431  Eriophyllum caespitosum Carl C. Marshall Sep 1887 439 Humboldt S side of Table Bluff. 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
  UC1223133  Eriophyllum lanatum var. achilleoides Joseph P. Tracy 1950-5-24 18696 Humboldt Cummings Post Office Comment
  UCR51798  Eriophyllum lanatum var. aphanactis Thomas W. Nelson, Jane P. Nelson 1977-7-1 3579 Humboldt Head of North Fork of Conley Creek, W side of road N from Alder Spring. 525 Comment
  HSC79441  Eriophyllum lanatum var. arachnoideum Kenneth Clark 1980-6-14 671 Humboldt Western slope of Dead Man's Gulch 145 Comment
  UC204867  Eriophyllum lanatum var. arachnoideum Joseph P. Tracy 1918-7-21 5082 Humboldt Humboldt Hill Northern Coast Ranges of California, Humboldt Hill 152 Comment
  UC302292  Eriophyllum lanatum var. arachnoideum Joseph P. Tracy 1926-6-18 7607 Humboldt Humboldt Hill Northern Coast Region, around Humboldt Bay, Humboldt Hill 152 Comment
  HSC74470  Eriophyllum lanatum var. grandiflorum Gail Newton 1980-7-23 1724 Humboldt Near Packsaddle Ridge 1463 Comment
  UC1223134  Eriophyllum lanatum var. grandiflorum Joseph P. Tracy 1944-7-3 17480 Humboldt at Willow Creek; Trinity River Valley 152 Comment
  CAS-BOT-BC301684  Eriophyllum lanatum var. lanceolatum Henry M. Pollard 1944-9-8 s.n. Humboldt Orleans Mt. 1524 Comment
  POM288346  Eriophyllum staechadifolium Lyman Benson 1929-7-19 1857 Humboldt Mouth of Matole River. Comment
  BLMAR601  Eriophyllum staechadifolium Jennifer Wheeler 2010-11-3 601 Humboldt King range, North bluff of allotment above the campground 243 Comment
  UC1198961  Erodium botrys Joseph P. Tracy 1933-5-20 12239 Humboldt s of point of Cape Mendocino; Cape Mendocino 3 Comment
  RSA390945  Erodium botrys Unspecified 1932-7-14 16269 Humboldt Near Garberville Comment
  HSC37916  Erodium cicutarium Peter Sorensen 1976-5-15 Humboldt Woodley Island Comment
  HSC8495  Erodium cicutarium R. T. Forester 1963-3-13 23 Humboldt 1/4 mi. N of Fairhaven on Samoa Rd. Comment
  HSC6759  Erysimum capitatum var. capitatum Francis Winter 1960-4-24 Humboldt 2 mi. NW of Sugar Pine Mtn., hilltop 915 Comment
  UC30098  Erythronium californicum Mrs. M. H. Manning 1902-3 Humboldt near Hupa Comment
  CAS-BOT-BC504305  Erythronium californicum Volney Rattan 1882-6-1 s.n. Humboldt Unspecified Comment
  HSC65180  Erythronium californicum T. Jimerson, J. Pageau 1979-4-18 423 Humboldt Rd. 6N21 100 yds. S of its junction with Hwy. 299, E side of rd. Comment
  HSC65203  Erythronium californicum T. Jimerson, J. Pageau 1979-5-1 445 Humboldt On FS 6N34C, Orleans Ranger District, Orleans Comment
  HSC98747  Erythronium grandiflorum Cara Witte 2008-6-2 664 Humboldt National Forest 1. 2 miles south of intersection with Forest Service Road 5N09. 1588 Comment
  JEPS79888  Erythronium oregonum Joseph P. Tracy 1918-5-1 4897 Humboldt Northern Coast Ranges, Kneeland Prairie 762 Comment
  HSC15503  Erythronium revolutum G. N. Bos 1965-5-2 245 Humboldt 8 mi. E of Korbel on Bald Mtn. Rd. 793 Comment
  HSC104325  Erythronium revolutum James Regan, Humboldt Redwood Co., LLC 2007-5-9 23 Humboldt Kneeland 854 Comment
  HSC23676  Eschscholzia californica Tim Baroni 1971-7-6 111 Humboldt 1 mi. S of Ferndale on the Mattole Rd. Comment
  POM160277  Eschscholzia californica var. crocea Joseph P. Tracy 1926-5-15 7485 Humboldt Kneeland Prairie, North Coast Ranges 762 Comment
  CAS-BOT-BC310492  Euchiton sphaericus Joseph P. Tracy 1935-9-1 14752 Humboldt North Coast Ranges. Near Dyerville 91 Comment
  CAS-BOT-BC206923  Euonymus occidentalis Joseph P. Tracy 1935-5-24 13823 Humboldt Eureka, 3 miles SE of business district 91 Comment
  HSC100937  Euonymus occidentalis Miss Handy Jun 1886 335 Humboldt Maple Cr. Comment
  HSC7986  Euphorbia helioscopia M. C. Hartman 1963-3-22 7 Humboldt Near farmhouse on side road, 1/4 mi. W of Alliance Rd. Comment
  HSC7987  Euphorbia lathyris J. P. Tracy 1941-10-26 17052 Humboldt Hydesville 91 Comment
  UC620702  Euthamia occidentalis S. K. Harris, Mrs. C. M. Wilder 1938-9-7 879 Humboldt Bars of the Van Dusen River, above Blue Slide Comment
  HSC41223  Festuca californica Robert M. Specht 1976-7-24 512 Humboldt 4 mi S of Hwy. 299 on Titlow Rd. to Horse Mtn. Comment
  UC34070  Festuca californica J. P. Tracy 1901-6-23 1175 Humboldt immediate vicinity Eureka 0 Comment
  HSC98829  Festuca californica var. californica Cara Witte 2007-5-21 70 Humboldt White Oak Opening. 1257 Comment
  HSC102208  Festuca idahoensis M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-4 1123 Humboldt Andy's Camp 1564 Comment
  UC1541568  Festuca occidentalis Harold E. Parks Jun 1933 4313 Humboldt Spruce Cove Trinidad Comment
  UC38531  Festuca occidentalis Harley P. Chandler May 1901 1186 Humboldt Humboldt Bay North Coast Ranges 30 Comment
  UCD66125  Festuca occidentalis P. B. Kennedy 1923-8-23 Humboldt Near Orleans, near top of grade - Red Bluff to Arcata. Comment
  UC525638  Festuca roemeri Joseph P. Tracy 1933-7-25 12890 Humboldt Grouse Mountain North Coast Ranges 1524 Comment
  BLMAR400  Festuca rubra Jennifer Anthony-Wheeler 2005-6-29 400 Humboldt South Spit, salt marsh variant 6 Comment
  CAS-BOT-BC278959  Festuca rubra Richard W. Pohl 1963-6-2 9452 A Humboldt Sea beach, Trinidad Beach State Park Comment
  CAS-BOT-BC278969  Festuca rubra W. R. Dudley 1899-6-1 s.n. Humboldt Eureka Penninsula [Peninsula] Comment
  HSC37920  Festuca rubra Peter Sorensen 1976-7-14 Humboldt Woodley Island Comment
  POM126115  Festuca rubra Joseph P. Tracy 1900-7-4 894 Humboldt Ocean Beach at Humboldt Bay. Comment
  UC247503  Festuca rubra A. S. Hitchcock 1915-7-13 469 Humboldt back of Humboldt Bay; Eureka Comment
  UCD66433  Festuca subulata R. Tofsrud 1947-7-1 198 Humboldt Between Alder Point and Zenia. Comment
  JEPS75445  Festuca subuliflora W. L. Jepson 1934-5-7 16710 Humboldt Buckeye Prairie, Bull Creek Comment
  RSA296728  Fragaria chiloensis J. P. Smith 1977-6-30 9205 Humboldt Samoa Peninsula just east of the drag strip. Comment
  HSC31646  Fragaria vesca Timothy B. Devine 1974-5-4 315 Humboldt Junction of Hwy. 299 and Titlow Hill Rd., E facing slope 875 Comment
  HSC41846  Fragaria vesca N. G. Sugihara 1977-4-23 12 Humboldt 2.5 mi. S of Shelter Cove Rd., S Fork of Bear Creek at Wailaki Campground 561 Comment
  HSC70357  Fragaria vesca M. A. Baker 1980-6-7 1866 Humboldt Near Ammon Creek 732 Comment
  UC1612458  Fragaria virginiana Gunter Staudt and H. Ahmadi 1989-5-15 313 Humboldt n of Trinidad (along Highway 101, near Seawood Drive exit); Highway 101 Comment
  CAS-BOT-BC53402  Frangula californica subsp. occidentalis Doris K. Kildale 1925-8-13 1115 Humboldt Willow Creek Flat, Trinity River Valley 152 Comment
  CAS-BOT-BC59955  Frangula purshiana Henry M. Pollard 1946-9-2 s.n. Humboldt Orleans Mt. 1524 Comment
  CAS-BOT-BC59956  Frangula purshiana Henry M. Pollard 1945-9-1 s.n. Humboldt Camp Creek, Klamath River Canyon. Comment
  CAS-BOT-BC59969  Frangula purshiana Volney Rattan 1882-6-1 s.n. Humboldt Mad River. Comment
  CAS-BOT-BC59998  Frangula purshiana C. B. Wolf 1937-8-13 9260 Humboldt N. coast range, 11 mi. e. of Hoopa Valley on New Road towards Trinity summit. 1524 Comment
  HSC16192  Fraxinus latifolia J. R. Lippincott 1967-7-16 14 Humboldt 1.0mi S of Blue Lake in West End Rd. Comment
  HSC16198  Fraxinus latifolia C. B. Wolf 1927-8-30 1246 Humboldt 3 mi. S of Thorn along old coast road Comment
  CAS-BOT-BC136032  Fritillaria affinis John Thomas Howell 1954-4-25 29154 Humboldt Dune hills, Little River Comment
  HSC43114  Fritillaria affinis Maralyn O'Meara 1974-5-14 362 Humboldt Beside Hwy. 36, 14.2 mi. E of Bridgeville Comment
  HSC82043  Fritillaria affinis Thomas W. Nelson, James Nelson 1980-6-10 5439 Humboldt Along branch rd. off Swayback Ridge 4-wheel drive rd. 200 yds from junction 1433 Comment
  UC1197638  Fritillaria atropurpurea Joseph P. Tracy 1935-7-30 14375 Humboldt Salmon Summit, just below the top Salmon Summit 2072 Comment
  UC1197630  Fritillaria purdyi Joseph P. Tracy 1926-4-3 7394 Humboldt Kneeland Prairie; Northern Coast Ranges, Kneeland Prairie 762 Comment
  RSA275379  Galium Thomas W. Nelson, J. Nelson 1976-5-10 2466 Humboldt Besides S.R. 191 just N of its jct with S.R. 70. Comment
  HSC39421  Galium ambiguum subsp. siskiyouense Thomas W. Nelson 1976-6-14 2707 Humboldt S of Lassic Peak 1524 Comment
  HSC95075  Galium aparine Andrea Pickart 2002-6-30 133 Humboldt Lanphere Dunes Unit, Humboldt Bay National Wildlife Refuge 0 Comment
  HSC71493  Galium bolanderi M. A. Baker 1980-6-7 1797 Humboldt Near Brush Mtn. 1128 Comment
  HSC97949  Galium bolanderi Cara Witte 2007-6-26 352 Humboldt Horse Mountain Botanical Area. Junction of 6N36 and 6N36A. 1388 Comment
  JEPS25700  Galium bolanderi P. C. Hutchison 1961-5-22 2031 Humboldt high bluffs along road ca. 5.4 mi n Orleans (on US hwy 299, e side of river); Klamath River Comment
  HSC69762  Galium divaricatum Thomas W. Nelson, Jane P. Nelson 1977-9-4 3746 Humboldt Willow Creek Comment
  HSC71828  Galium grayanum var. grayanum Thomas W. Nelson, Jane P. Nelson 1980-6-27 5958 Humboldt Saddle E of Mt. Lassic 1677 Comment
  UC1196100  Galium parisiense Joseph P. Tracy 1934-7-9 13353 Humboldt Dobbyn Creek 152 Comment
  POM266215  Galium parisiense Joseph P. Tracy 1939-8-5 16378 Humboldt Dinsmore's. Comment
  HSC19817  Galium porrigens var. porrigens B. D. Rogers, William J. Ferlatte 1966-6-15 2092 Humboldt Near Bridgeville Comment
  HSC90645  Galium trifidum Gail Newton 1982-6-1 3570 Humboldt Elk River Wildlife Area, Eureka. Comment
  UC196081  Galium trifidum Joseph P. Tracy 1927-7-10 8246 Humboldt Alton Northern Coast Region 30 Comment
  SD88387  Galium trifidum subsp. columbianum Darley F. Howe 1972-6-30 Humboldt Trinidad Comment
  HSC98666  Galium triflorum Cara Witte 2007-7-2 398 Humboldt Spike Buck Mountain. Forest Service Road 5N18. Near intersection with National Forest 1. 1589 Comment
  CAS-BOT-BC188535  Garrya elliptica H. E. Parks 1933-2-1 4287 Humboldt Trinidad, on cliffs near ocean Comment
  CAS-BOT-BC194526  Garrya elliptica L. R. Abrams; R. Bacigalupi 1922-6-25 8293 Humboldt Bluffs north of Big Lagoon Comment
  HSC103981  Garrya elliptica C. Reynolds 2015-4-12 28 Humboldt Just before entrance onto footpath at Freshwater Beach from Kuchel Visitor Center 1 Comment
  HSC33744  Garrya elliptica J. M. Sauser 1975-5-24 73 Humboldt Samoa dunes off Samoa Blvd. from boat landing Comment
  UC154051  Garrya elliptica J. P. Tracy 1901-1-27 990 Humboldt opposite Eureka (Ocean Beach at Samoa); Samoa Comment
  UC183578  Garrya elliptica Joseph P. Tracy 1913-3-2 4011 Humboldt Eureka; Northern Coast Region 0 Comment
  HSC40855  Garrya fremontii Thomas W. Nelson 1976-7-9 2992 Humboldt Ridge S of the E peak of the Lassic Peak (Signal peak) group. 1707 Comment
  HSC47959  Garrya fremontii Brad Klipfel 1975-5-24 650 Humboldt Horse Mtn. Comment
  HSC8399  Garrya fremontii Elrid H. Spinas 1948-5-22 37 Humboldt Horse Mtn. Comment
  HSC98881  Garrya fremontii Cara Witte 2008-7-2 800 Humboldt National Forest Road 1; 5 miles south of intersection with 5N04. Before cattle guard crossing. 1406 Comment
  UC1051597  Garrya fremontii Joseph P. Tracy 1948-9-12 18214 Humboldt 1 mi w Mud Springs; Trinity Summit 1158 Comment
  UC589848  Gastridium ventricosum H. S. Yates 1936-6-23 5877 Humboldt 4 mi nne Cathay Peak; Dyerville Quadrangle Comment
  UC902050  Gaultheria ovatifolia Joseph P. Tracy 1949-8-11 18456 Humboldt Snow Camp 1432 Comment
  CAS-BOT-BC58911  Gaultheria shallon L. R. Abrams 1916-7-11 6010 Humboldt Mouth of Grizzly Creek on Van Duzor River Comment
  HSC31342  Gaultheria shallon Larry E. DeBuhr, G. D. Wallace 1972-5-22 607 Humboldt 25 mi. N of Arcata at the S end of Big Lagoon Comment
  UC1193364  Gaultheria shallon P. Zinke 1950-9-21 164 Humboldt Outside National Forest, Kerr Peak Kerr Peak; Outside National Forest, Kerr Peak 609 Comment
  HSC7814  Gaultheria shallon Neuns 1950-10-9 136 Humboldt 2 mi. W of Thorne 335 Comment
  HSC99578  Gayophytum diffusum subsp. parviflorum K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-8-10 243 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
  UC505126  Gayophytum humile Joseph P. Tracy Jul 16 1930-Jul 19 1930 8940 Humboldt near McKay Camp; Northern Coast Ranges, South Fork Mountain 1676 Comment
  UCR84793  Genista linifolia Kathy Harper 1992-5-14 s.n. Humboldt Coast Range, Van Duzen River, c. 1.5 mi. west of Bridgeville on State Hwy 36 195 Comment
  UC1541479  Gentiana sceptrum Harold E. Parks Jul 1931 1052 Humboldt Trinidad 76 Comment
  UC562302  Gentiana sceptrum Joseph P. Tracy 1927-8-22 8338 Humboldt near High Prairie; Northern Coast Ranges, Bald Mountain 1066 Comment
  HSC100486  Geranium carolinianum Carl C. Marshall May 1886 192 Humboldt Everywhere. Comment
  HSC37851  Geranium carolinianum Peter Sorensen 1976-6-2 Humboldt Woodley Island Comment
  UC1197402  Geranium carolinianum Joseph P. Tracy 1935-5-25 13875 Humboldt Fort Seward 106 Comment
  HSC2218  Geranium dissectum H. E. Parks, S. T. Parks Apr 1938 24118 Humboldt Spruce Cove, Trinidad 61 Comment
  UC1198956  Geranium molle Joseph P. Tracy 1937-5-17 15293 Humboldt Willow Creek Trinity River Valley 152 Comment
  HSC89987  Geranium molle Leonel Arguello 1989-6-24 24 Humboldt Lanphere-Christensen Dunes Preserve 3 mi. W of Arcata, Hunt parcel Comment
  SD113958  Geranium pilosum Darley F. Howe 1961-8-1 3101 Humboldt 3.3 miles north of Trinidad on Highway 101. Comment
  HSC63005  Geranium retrorsum M. Dean Griswold Jr. 1979-5-30 95 Humboldt N side of Samoa Blvd. Comment
  JEPS79892  Geum macrophyllum Joseph P. Tracy 1932-7-14 10540 Humboldt at Corral Prairie, Klamath Mountains, Trinity Summit Corral Prairie; Klamath Mountains, Trinity Summit, Corral Prairie 1524 Comment
  UC1198722  Geum macrophyllum Joseph P. Tracy 1936-8-7 15086 Humboldt head of Little Hors-Linto Creek, Trinity Summit Little Hors-Linto Creek; Trinity Summit, Little Hors-Linto Creek 1371 Comment
  UC492183  Geum macrophyllum var. perincisum Joseph P. Tracy 1932-7-14 10540 Humboldt at Corral Prairie, Klamath Mountains, Trinity Summit Corral Prairie; Klamath Mountains, Trinity Summit, Corral Prairie 1524 Comment
  HSC100591  Gilia capitata Carl C. Marshall Jun 1885 103 Humboldt Eel River region. Comment
  SEINET12278778  Gilia capitata L. K. Henry 1971-1 s.n. Humboldt along Rt 36, 2 mi E of Dinsmore in Six Rivers National Forest Comment
  UC1197923  Gilia capitata subsp. pacifica Joseph P. Tracy 1925-5-24 7010 Humboldt Kneeland Prairie 762 Comment
  UC1197924  Gilia capitata subsp. pacifica Joseph P. Tracy 1949-10-29 18595 Humboldt Eureka 30 Comment
  UC176953  Gilia capitata subsp. pacifica Joseph P. Tracy 1912-6-9 3672 Humboldt Alton Northern Coast Region, Alton 30 Comment
  UC907968  Gilia capitata subsp. pacifica Joseph P. Tracy 1936-6-9 14879 Humboldt Bear River Ridge Northern Coast Ranges, Bear River Ridge 609 Comment
  UC604651  Gilia tricolor subsp. tricolor Joseph P. Tracy 1938-5-1 15733 Humboldt Willow Creek Trinity River Valley, at Willow Creek 152 Comment
  UC1602182  Githopsis specularioides Harley P. Chandler Jun 1901 1345 Humboldt Hupa Reservation North Coast Ranges 152 Comment
  UC1198625  Glaux maritima Joseph P. Tracy 1934-7-3 13303 Humboldt around Humboldt Bay (along Freshwater Slough); Northern Coast Region, Freshwater Slough 3 Comment
  HSC21499  Glehnia littoralis subsp. leiocarpa R. E. Hafenfeld 1965-5-9 56 Humboldt Junction of County Rd. and Gold Bluff Beach Rd. Comment
  UC21300  Glehnia littoralis subsp. leiocarpa Harley P. Chandler May, 1901 1145 Humboldt Humboldt Bay North Coast Ranges, Humboldt Bay 3 Comment
  UCD85114  Glyceria elata Harley P. Chandler 1901-6-1 1526 Humboldt North Coast Ranges. Klamath River. 426 Comment
  SEINET10591165  Glyceria striata Harley P. Chandler Chandler 1526 Humboldt Klamath River. 427 Comment
  CAS-BOT-BC302619  Gnaphalium palustre Joseph P. Tracy 1933-8-30 13043 Humboldt North Coast Ranges. Grouse Mountain 1524 Comment
  HSC5711  Gnaphalium palustre Jerry Parker 1968-9-24 74 Humboldt Mckinleyville beach Comment
  UC164897  Gnaphalium palustre Joseph P. Tracy 1909-7-18 3024 Humboldt sand dunes of Ocean Beach; Northern Coast Region, , Humboldt Bay Comment
  HSC55277  Goodyera oblongifolia Overton, Butler 1979-8-2 12685 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  HSC98555  Goodyera oblongifolia Cara Witte 2007-9-3 643 Humboldt Forest Service Road 5N09. 1 mile east of intersection with National Forest 1. 1332 Comment
  UC1326261  Goodyera oblongifolia Milo S. Baker 1947-8-10 11906 Humboldt along trail to Trinity Summit from end of Forest Road from Hoopa Trinity Summit 1432 Comment
  JEPS79300  Gratiola ebracteata Wm. C. Vinyard and Scott W. Hilton 1980-9-16 800916 .1 Humboldt near summit of Snowcamp Mnt (ne side of Snowcamp Lake); near summit Snowcamp Mnt, ne side Snowcamp Lake 1371 Comment
  RSA12431  Gratiola ebracteata Carl B. Wolf 1934-7-2 5863 Humboldt At edge of small lake at Snow Camp. (Mts. east of Korbel). 1372 Comment
  CAS-BOT-BC304746  Grindelia hirsutula John Thomas Howell 1937-7-31 13720 Humboldt Salt marsh bordering Humboldt Bay at Arcata Comment
  CAS-BOT-BC304754  Grindelia hirsutula H. E. Parks 1941-8-1 24190 Humboldt Big Lagoon Comment
  CAS-BOT-BC304764  Grindelia hirsutula Kenneth Clark 1980-5-10 655 Humboldt Shelter Cove. South-facing bluffs of Point Delgada 7 Comment
  HSC37504  Grindelia hirsutula J. D. Ackerman 1975-8-2 613 Humboldt Hwy. 101 between Arcata and Eureka. Humboldt Bay across from Murray Field Comment
  HSC38496  Grindelia hirsutula R. Sutherland 1976-10-31 1 .311076 Humboldt Disturbed road edge of county road 290 Comment
  HSC79173  Grindelia hirsutula C. K. Geldin-Meyers 1985-8-5 102 Humboldt W of Honeydew along Mattole Rd. 610 Comment
  JEPS81942  Grindelia hirsutula Rimo Bacigalupi, and L. R. Heckard 1964-7-28 8967 Humboldt 9.5 mi by road nw Petrolia (s of Cape Mendocino, in coastal scrub just back of beach) Comment
  UC637144  Grindelia hirsutula Edward Lee 1934-8-17 1148 Humboldt e shore Big Lagoon (35 mi n of Eureka); e shore of Big Lagoon 3 Comment
  POM230322  Grindelia stricta var. stricta J. T. Howell 1937-7-31 s.n. Humboldt Salt marsh bordering Humboldt Bay at Arcata. Comment
  UC1222253  Hackelia californica Joseph P. Tracy 1949-8-26 18524 Humboldt on Ridge 2 mi e Grove's Prairie (near Elk Camp); Trinity nSummit 1524 Comment
  UC1199146  Helenium bolanderi Joseph P. Tracy 1934-8-22 15675 Humboldt Table Bluff 91 Comment
  UC1409057  Helenium bolanderi Robert F. Thorne and P. Everett 1965-8-7 35194 Humboldt at s end Big Lagoon 1 Comment
  UC204746  Helminthotheca echioides Joseph P. Tracy 1918-7-1 4969 Humboldt southwestern slopes fronting the ocean three mi s of point Cape Mendocino; Northern Coast Ranges, Cape Mendocino 3 Comment
  HSC48729  Hemitomes congestum J. Pageau, T. Jimerson, W. Wisler, A. Regalis 1979-6-13 523 Humboldt Off FS 10N05. SE slope of Hopkins Butte. Bulk Collection 185 1037 Comment
  HSC103324  Hemizonella minima Erin Lonergan, Benjamin Hart 2007-6-4 1 Humboldt Coldsprings Camp, 6.5 mi. S of Hwy. 299 on Forest Service Road NF1. 1372 Comment
  CAS-BOT-BC309984  Hemizonia congesta subsp. tracyi M. S. Jussel 1931-5-2 s.n. Humboldt 6 miles from Garberville 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
  SEINET7887160 Image available Hemizonia congesta subsp. tracyi S. K. Harris 1936-1 699 Humboldt above Van Duzen River about 1 mile west of Bridgeville Comment
  HSC56157  Heracleum maximum G. L. Clifton, Terry Griswold 1979-8-1 12022 Humboldt Near N Trinity Mtn., close to the town of Hoopa. 1798 Comment
  UC1212422  Hesperolinon micranthum Joseph P. Tracy 1925-7-12 7202 Humboldt hillsides w of Trinity River Valley (near the South Fork); Northern Coast Ranges 304 Comment
  HSC99566  Heterocodon rariflorum K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-8-10 231 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
  POM89166  Heteromeles arbutifolia Joseph P. Tracy 1920-8-15 5389 Humboldt Klamath River at Bluff Creek. 152 Comment
  RSA50141  Heteromeles arbutifolia E. K. Balls 1949-7-10 13969 Humboldt on way from Somes Bar to Orleans, near Siskiyou County line. 152 Comment
  HSC5313  Heterotheca oregona D. E. Anderson 1963-9-21 2837 Humboldt 1/2 mi. E of Willow Creek Comment
  UC894670  Heterotheca oregona var. rudis Carl D. Duncan 1920-9-22 Humboldt Hoopa Valley Comment
  POM288698  Heterotheca oregona var. rudis Lyman Benson 1928-7-12 477 Humboldt Weott Ranger Station; Mt.Range: Seaward N Coast; Watershed: South Fork Eel River. 61 Comment
  BLMAR246  Heuchera Jennifer Anthony-Wheeler 1997-7-24 246 Humboldt Lacks Creek, growing along W side of rd in rocky/cliff area 1219 Comment
  HSC57155  Hieracium albiflorum Overton, Butler 1979-7-26 9954 Humboldt Near Willow Creek, E Fork, close to the town of Willow Creek 1326 Comment
  HSC5829  Hieracium albiflorum H. E. Parks, J. P. Tracy 1930-9-14 768 Humboldt Bald Hills, near Kneeland Comment
  UC1223085  Hieracium albiflorum Joseph P. Tracy 1948-9-5 18181 Humboldt high ridge e Grove's Prairie (near Elk Camp on the Grizzly Camp Road); Trinity Summit 1524 Comment
  HSC57935  Hieracium greenei G. L. Clifton, Griswold 1979-7-31 11587 Humboldt Near Trinity Summit Guard Station, close to Hoopa 1884 Comment
  UC582410  Hieracium greenei Joseph P. Tracy 1935-7-29 14340 Humboldt near Ranger Station; Trinity Summit 1828 Comment
  UC165196  Hieracium nudicaule Joseph P. Tracy 1909-8-1 3066 Humboldt Kneeland Prairie Northern Coast Ranges, Kneeland Prairie 762 Comment
  UC34196  Hieracium nudicaule Harley P. Chandler 1901-6-1 1489 Humboldt Klamath River North Coast Ranges, Klamath River 426 Comment
  UC582422  Hieracium nudicaule Joseph P. Tracy Jul 16 1930-Jul 19 1930 9041 Humboldt near Blake lookout; Northern Coast Ranges, South Fork Mountain 1737 Comment
  SEINET11847403  Hieracium scouleri H. P. Chandler 1901-1 1489 Humboldt Klamath River, North Coast Ranges 427 Comment
  UC165198  Hieracium scouleri Joseph P. Tracy 1908-7-1 2891 Humboldt near Low Gap (ridge between Van Duzen and Mad Rivers, Humboldt and Trinity Counties); Northern Coast Ranges 914 Comment
  HSC63084  Hippuris vulgaris David Wheeler 1979-4-20 72 Humboldt Clam Beach Ponds, N pond, 0.25 mi. S of Crannel Rd. between the frontage road and Hwy. 101 Comment
  HSC28191  Hippuris vulgaris John R. Keith 1973-5-15 Humboldt Abandoned log pond about 200 yds. E of junction of Guintoli Ln. and West End Rd. Comment
  HSC36309  Hippuris vulgaris David Sohrakoff 1972-11-12 1 Humboldt Clam Beach ponds Comment
  HSC69527  Hippuris vulgaris R. Kalal 1980-6-1 8 Humboldt Essex Pond 15 Comment
  HSC69757  Hippuris vulgaris Thomas W. Nelson 1977-9-22 3750 Humboldt Along E side of State Rte. 101, N of Eureka airport Comment
  HSC6594  Hirschfeldia incana P. W. Shields 1955-9-29 Humboldt 0.5 mi. S of Fernbridge Comment
  CAS-BOT-BC280736  Holcus lanatus Ira L. Wiggins 1930-6-25 4614 Humboldt 2 miles north of Samoa Comment
  HSC37237  Holcus lanatus Lon Hall 1975-6-19 401 Humboldt About 2 mi. N of Shelter Cove Rd. on Horse Mtn. Rd. 549 Comment
  HSC97396  Holcus lanatus J. Wendell Howe 1934-6-27 1278 Humboldt Arcata. Comment
  HSC99581  Holcus lanatus K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-8-10 246 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
  JEPS71225  Holcus lanatus William S. Cooper 1925-7-29 121 Humboldt Samoa Comment
  UCD84850  Holcus lanatus Ashley C. Browne 1936-6-11 s.n. Humboldt Patrick's Point State Park. Comment
  CAS-BOT-BC149906  Holodiscus discolor Alice Eastwood 1921-7-21 10651 Humboldt Carlotta Comment
  UC666848  Holodiscus discolor Joseph P. Tracy 1937-6-20 15347 Humboldt Bear River 10 miles upstream from the mouth Bear River 152 Comment
  UCSC000355  Holodiscus discolor H. L. Person 1932-6-25 s.n. Humboldt E. of Korbel Korbel - Eureka Comment
  UCD85279  Hordeum brachyantherum A. A. Beetle; J. P. Tracy, G. L. Stebbins 1942-6-2 3463 Humboldt 1 mile E of Alton. Comment
  CDA20429  Horkelia tridentata P. Haggard 2002-8-5 PDR P 070940 Humboldt Northwestern California; USFS property roadside in the vicinity of Blue Lake. 0 Comment
  UC303162  Horkelia tridentata subsp. flavescens Joseph P. Tracy 1925-5-30 7025 Humboldt Laribee Valley; Northern Coast Ranges 701 Comment
  BLMAR165  Hosackia crassifolia Donald Hazlett 1994-6-7 165 Humboldt King range, near horse Mt. Ridge rd 670 Comment
  HSC98277  Hosackia crassifolia D. E. Anderson 1961-9-30 1848 Humboldt Divide Lake. 915 Comment
  UC1103413  Hydrocotyle ranunculoides Joseph P. Tracy 1940-10-5 16744 Humboldt mouth of Little River 3 Comment
  UCD128229  Hydrocotyle ranunculoides Linda M. Barker 1976-8-2 1704 Humboldt Coastal forest and dunes 3 miles west of Arcata. Comment
  UC1762196  Hydrophyllum fendleri var. albifrons Joseph P. Tracy 1932-7-15 10602 Humboldt Trinity Summit, ridges E of Corral Prairie 1828 Comment
  HSC13542  Hydrophyllum tenuipes H. E. Parks, S. T. Parks May 1930 759 Humboldt Along Van Duzen River Comment
  UC562602  Hydrophyllum tenuipes Joseph P. Tracy 1924-6-1 6690 Humboldt Lawrence Creek Northern Coast Ranges (at crossing of Kneeland Road) 457 Comment
  HSC98128  Hypericum anagalloides Cara Witte 2007-6-28 380 Humboldt FS Road 5N10. Approximately 0.5 mi E of intersection with National Forest 1. 1426 Comment
  UC1714398  Hypericum formosum var. scouleri Joseph P. Tracy 1913-7 4393 Humboldt Patrick's Point Northern Coast Ranges, Patrick's Point 30 Comment
  JEPS66833  Hypericum perforatum Lincoln Constance 1934-5-26 677 Humboldt w. end of Dyerville Bridge; S. Fork Eel R., Bull Creek Region 45 Comment
  UC420746  Hypericum perforatum Harley P. Chandler June, 1901 1493 Humboldt Klamath R. North Coast Ranges, Klamath R. 426 Comment
  CAS-BOT-BC401235  Hypericum perforatum Joseph P. Tracy 1933-7-21 12820 Humboldt Valley of South Yager Creek 762 Comment
  HSC99557  Hypericum perforatum K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-8-10 222 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  POM311762  Hypericum perforatum Karen Hosterman 1957-8-29 1109 Humboldt 7 miles from Orleans, within 1 mile of junction of Klamath Road and Red Cap Creek. 114 Comment
  CAS-BOT-BC312887  Hypochaeris glabra Alice Eastwood 1923-8-16 12326 Humboldt Carlotta Comment
  CAS-BOT-BC311432  Hypochaeris radicata Alice Eastwood 1923-8-16 12332 Humboldt Carlotta Comment
  JEPS67376 Image available Iliamna latibracteata Joseph P. Tracy 1926-6-12 7585 Humboldt Prairie Creek Northern Coast Ranges. 152 Comment
  UC630469 Image available Iliamna latibracteata H. E. Parks, S. T. Parks June, 1935 5593 Humboldt East side of Prairie Creek, North of Orick. Comment
Read comments
Feb 27 2012
  CHSC2200  Iris douglasiana E. Crouch 1929-5-8 Humboldt Comment
  HSC13864  Iris douglasiana John A. DuBois 1962-5-5 17 Humboldt 20 mi. E of Arcata Comment
  HSC13869  Iris douglasiana W. A. Heaton 1965-4-10 22 Humboldt 0.5 mi. N of Trinidad State Park Comment
  JEPS17218  Iris douglasiana Milo S. Baker 1923-7-31 157 a Humboldt Lawrence Creek; central Humboldt County Comment
  JEPS93203  Iris douglasiana Carol A. Wilson 1992-5-17 92 -21 Humboldt 4.8 mi e of Hwy 101 on Bald Hills Road, Redwood National Park Redwood National Park 548 Comment
  RSA137356  Iris douglasiana Lee W. Lenz, E. K. Balls 1956-6-12 21666 Humboldt Between Willow Creek and Blue Lake, U.S. Highway 299 366 Comment
  UC1174757  Iris douglasiana L. W. Lenz and E. K. Balls 1956-6-12 21666 Humboldt between Willow Creek and Blue Lake (U.S. Hwy 299) 365 Comment
  SEINET12056923  Iris purdyi J. P. Tracy 1950-1 18950 Humboldt at "Friday Camp", Friday Ridge. Grouse Mountain 1219 Comment
  UCD138800  Iris purdyi R. N. Raynor 1935-2-22 s.n. Humboldt Fort Seward. Comment
  HSC66476  Iris tenax subsp. klamathensis T. Jimerson, J. Pageau 1979-4-25 920 Humboldt On Eyesee Rd., 0.3 mi. N of Hwy. 96, Orleans Comment
  HSC49177  Iris tenuissima J. O. Sawyer 1977-4-23 2847 Humboldt Bluff Creek Campground Comment
  CAS-BOT-BC88650  Isatis tinctoria Joseph P. Tracy 1939-4-29 16239 Humboldt Klamath River at mouth of Slate Creek. 121 Comment
  CAS-BOT-BC112459  Isolepis cernua Carl B. Wolf 1927-8-22 790 Humboldt Big Lagoon Comment
  SEINET4170781 Image available Isolepis cernua H. E. Parks, S. T. Parks 24244 Humboldt Spruce Cove , Trinidad 61 Comment
  CAS-BOT-BC340228  Jaumea carnosa Marcus E. Jones 1931-7-16 2911 Humboldt Arcata Comment
  UC665529  Jaumea carnosa H. E. Parks 1941-8-1 24187 Humboldt Big Lagoon Comment
  UCR122380  Jaumea carnosa George K. Helmkamp, E. A. Helmkamp 2001-7-8 7004 Humboldt North Coast, north spit of Samoa Peninsula, 0.5 mi north of CA Hwy 255 bridge over Humboldt Bay 6 Comment
  CAS-BOT-BC340153  Jaumea carnosa C. C. Harris; S. K. Harris 1939-8-26 s.n. Humboldt South shore of Humboldt Bay Comment
  RSA181881  Jaumea carnosa Joseph P. Tracy 1938-7-15 16072 Humboldt Mouth of Eel River. 3 Comment
  UC741148  Jaumea carnosa C. C. and S. K. Harris 1939-8-26 994 Humboldt salt marsh south shore Humboldt Bay Comment
  JEPS5820  Juncus bolanderi W. L. Jepson 1932-7-24 16393 Humboldt Tooey Ranch Garberville Comment
  CHSC102919  Juncus breweri Peter F. Zika 2007-7-19 23173 Humboldt North Coast. S end of Humboldt Bay. 3 Comment
  HSC67455  Juncus bufonius J. P. Smith 1971-10-9 5009 Humboldt Mad River above the Fish Hatchery. Comment
  SEINET6333123  Juncus bufonius S. T. Parks, H. E. Parks 24254 Humboldt North Coast Ranges, Spruce Cove, Trinidad 61 Comment
  SEINET7421723 Image available Juncus bufonius H. E. Parks, S. T. Parks 1943-1 24254 Humboldt Spruce Cove, Trinidad 61 Comment
  UCD141425  Juncus covillei Linda M. Barker 1976-6-22 1623 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  HSC74671  Juncus effusus subsp. pacificus Gail Newton 1981-8-5 2360 Humboldt Near Bug Creek, E Fork. 820 Comment
  UC249745  Juncus ensifolius Joseph P. Tracy 1924-8-31 6849 Humboldt Bluff Creek Northern Coast Ranges, Klamath River 91 Comment
  UC1152095  Juncus ensifolius Joseph P. Tracy 1937-7-25 15563 Humboldt 6 mi ne Hawkins Bar; Trinity Summit Range, Happy Camp Mountain 1280 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
  UC1196725  Juncus hesperius J. P. Tracy 1900-6-23 859 Humboldt immediate vicinity Eureka 0 Comment
  UC1151998  Juncus occidentalis Joseph P. Tracy 1930-7-17 8981 Humboldt near McKay Camp; South Fork Mountain 1676 Comment
  HSC99032  Juncus patens Cara Witte 2008-7-14 896 Humboldt Cold Spring. 0.5 mi. S of Titlow Hill. 1440 Comment
  RSA44508  Juncus tenuis Henry M. Pollard 1948-7-18 s.n. Humboldt Near Orleans. Comment
  HSC56961  Juncus xiphioides Overton, Butler 1979-7-23 9475 Humboldt Near Horse Mtn. Creek, close to the town of Willow Creek 1326 Comment
  SEINET11788655  Juncus xiphioides J. P. Tracy 1938-1 16171 Humboldt Lake Prairie Comment
  CAS-BOT-BC235877  Keckiella corymbosa Joseph P. Tracy 1920-8-15 5360 Humboldt Klamath River, at Bluff Creek 152 Comment
  CAS-BOT-BC235890  Keckiella corymbosa Carl D. Duncan 1920-9-21 333 Humboldt Hoopa Comment
  RSA424319  Keckiella corymbosa Lester Rowntree 1931-7-21 s.n. Humboldt Mattole River Bridge 2 miles from Petrolia. Comment
  SD87720  Keckiella corymbosa Frank W. Peirson 1926-7-12 7025 Humboldt Klamath River near Weitchpec Comment
  UC1245365  Keckiella lemmonii Joseph T. Gregory 1929-8-4 24 Humboldt on road from Petrolia to Dyerville (Windy Nip Gap); Windy Nip Gap Comment
  UC213499  Keckiella lemmonii Joseph P. Tracy 1920-8-15 5352 Humboldt mouth of Slate Creek (Klamath River); Northern Coast Ranges 152 Comment
  POM187943  Lactuca biennis Marcus E. Jones 1931-7-14 29090 Humboldt South of Eureka Comment
  CDA39235  Lagophylla ramosissima D. Juliano 2013-8-1 PDR# 120 P06003679 Humboldt Vicinity of Carlotta, along Yager Creek, near Hwy. 36 & Central Ave. Comment
  UC1239673  Lamium amplexicaule Joseph P. Tracy 1939-7-8 16314 Humboldt Eureka 30 Comment
  UC1225837  Lamium purpureum Joseph P. Tracy 1945-5-10 17508 Humboldt Eureka Comment
  UC1239674  Lamium purpureum Ralph Ferguson 1948-4-12 Humboldt Eureka; in district s of Harris Street 45 Comment
  CAS-BOT-BC337992  Lasthenia californica Joseph P. Tracy 1932-6-26 10265 Humboldt Valley of South Yager Creek 762 Comment
  UC1199124  Lasthenia californica subsp. californica Joseph P. Tracy 1932-6-19 10249 Humboldt Larrabee Valley Northern Coast Ranges, Larrabee Valley 701 Comment
  CAS-BOT-BC352932  Lasthenia glaberrima Joseph P. Tracy 1930-6-15 8748 Humboldt Larrabee Creek, near Bosworth's 457 Comment
  HSC99712  Lathyrus angulatus Glenn W. K. Shelton 2010-7-10 13 Humboldt W of Dinsmore, 0.9 mi. S of Hwy. 36 along FS Rd. 1N30, S side of road 747 Comment
  HSC89316  Lathyrus aphaca Pat Daly 1989-4-14 Humboldt Mckinleyville, 4886 Cottage Grove Ave. Comment
  JEPS82141  Lathyrus biflorus Thomas W. Nelson and Tom Jimerson 1980-8-4 6233 Humboldt ne slope Red Mountain; North Coast Ranges, Blocksburg Quad. 1371 Comment
  UC1368671  Lathyrus glandulosus J. P. Tracy 1948-8-7 18085 Humboldt Fickle Hill 609 Comment
  UC1199079  Lathyrus japonicus Joseph P. Tracy 1915-6-6 4647 Humboldt mouth of Elk River Northern Coast Region, Eureka 0 Comment
  HSC71617  Lathyrus latifolius J. P. Smith 1973-5-26 6800 Humboldt Scotia Bluffs along the Eel River near Rio Dell Comment
  HSC40263  Lathyrus littoralis Linda M. Barker 1976-4-30 1409 Humboldt 3 mi. W of Arcata Comment
  UCD106379  Lathyrus littoralis Roman Gankin 1965-8-6 552 Humboldt 1.3 miles south of Samoa, Samoa Peninsula. Comment
  HSC62924  Lathyrus littoralis J. M. DiTomaso 1979-4-22 913 Humboldt Big Lagoon, 8 mi. N of Trinidad Comment
  HSC102562  Lathyrus nevadensis var. nevadensis M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-29 1549 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1579 Comment
  JEPS55344  Lathyrus nevadensis var. nevadensis Joseph P. Tracy 1926-5-2 7444 Humboldt Willow Creek Canyon Northern Coast Ranges 609 Comment
  CAS-BOT-BC205040  Lathyrus palustris Milo S. Baker 1931-7-17 5407 Humboldt South side of Big Lagoon near cottages Comment
  HSC100519  Lathyrus polyphyllus Carl C. Marshall Mar 1886 147 Humboldt Near Mad River. Comment
  UC1222412  Lathyrus polyphyllus Joseph P. Tracy 1950-7-2 18975 Humboldt near Grizzly Camp (on Little Hors Linto Creek); Trinity Summit, Little Hors Linto Creek Comment
  UC709410  Lathyrus torreyi Joseph P. Tracy 1939-7-9 16338 Humboldt Snow Camp 1402 Comment
  UC1222403  Lathyrus torreyi Joseph P. Tracy 1942-6-28 17272 Humboldt e of Korbel (on Murphy Ridge beyond the meadows); Bald Mountain, Murphy Ridge Comment
  UC175635  Lathyrus vestitus Joseph P. Tracy 1913-6-26 4352 Humboldt opposite Buck Mountain (Dinsmore's Ranch); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  HSC33755  Layia carnosa A. Montalvo 1975-5-24 272 Humboldt Samoa Dunes off Samoa Blvd., across from the boat landing Comment
  HSC5913  Layia carnosa J. P. Tracy 1917-5-30 4796 Humboldt Mouth of Little River. 6 Comment
  JEPS13463  Layia carnosa Joseph P. Tracy 1917-5-30 4796 Humboldt sand dunes of coean beach at mouth Little River; Northern Coast Region Comment
  UC30591  Layia carnosa J. P. Tracy 1901-4-17 Humboldt Samoa; Humboldt Bay Comment
  JEPS13464  Layia gaillardioides Joseph P. Tracy 1936-6-9 14875 Humboldt Bear River Ridge 609 Comment
  UC1197587  Ledum glandulosum J. P. Tracy 1899-7-22 84 Humboldt immediate vicinity of Eureka 0 Comment
  UC1101319  Lemna turionifera Malcolm A. Nobs, S. Galen Smith 1949-8-9 1225 Humboldt 1 mi n of Arcata (at junction of Highways 101 and 299, Mad River Valley); Mad River Valley Comment
  HSC68160  Leontodon saxatilis subsp. saxatilis J. P. Smith 1971-10-6 4966 Humboldt End of Murray Rd. in McKinleyville. Comment
  UC582428  Leontodon saxatilis subsp. saxatilis Joseph P. Tracy 1933-8-22 12982 Humboldt near Fields Landing (around Humboldt Bay); Northern Coast Region, around Humboldt Bay 6 Comment
  JEPS53711  Lepidium nitidum Joseph P. Tracy 1918-5-5 4927 Humboldt Ocean Beach Northern Coast Region, Humboldt Bay Comment
  HSC17073  Leptosiphon androsaceus G. N. Bos 1965-5-15 262 Humboldt 3 mi. W of Berry Summit along U.S. 299 610 Comment
  SEINET7967470 Image available Leptosiphon bicolor Gail Newton 1980-6-28 746 Humboldt Near Mad River Butte 369 Comment
  CAS-BOT-BC341822  Lessingia nemaclada James T. Vale 1979-7-26 s.n. Humboldt Elk Creek Comment
  RSA54146  Lessingia nemaclada H. M. Pollard 1945-8-25 s.n. Humboldt Between Orleans and Camp Creek, Klamath River Canyon. Comment
  SEINET11448001 Image available Leucanthemum vulgare H. E. Parks, S. T. Parks 1943-1 24257 Humboldt Spruce Cove, Trinidad 60 Comment
  HSC81933  Leucanthemum vulgare Thomas W. Nelson, Jane P. Nelson 1979-7-3 4960 Humboldt Along road to Joe Losey property at junction of Kneeland and Maple Creek Rds. 610 Comment
  UCR70876  Lewisia cotyledon var. howellii Lincoln Constance, R. C. Rollins 1942-5-12 2885 Humboldt MOuth of Bluff Creek, 6 mi NE of Weitchpec 152 Comment
  HSC102128  Lewisia triphylla M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 1032 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  RSA295817  Leymus vancouverensis Lyman Benson 1929-7-15 1818 Humboldt Clam Beach, Trinidad Comment
  UC1222811  Ligusticum apiifolium Joseph P. Tracy 1950-7-31 19238 Humboldt Grouse Mt. 1524 Comment
  UC1197169  Ligusticum grayi Joseph P. Tracy 1932-7-12 10444 Humboldt Trinity Summit, Corral Prairie 1584 Comment
  HSC21519  Lilaeopsis occidentalis Jerry Parker 1968-10-26 211 Humboldt Big Lagoon shoreline, near Sphagnum Bog outlet Comment
  HSC36102  Lilaeopsis occidentalis David Sohrakoff 1972-12-11 3 Humboldt Northern most Clam Beach Pond Comment
  CAS-BOT-BC508399  Lilium columbianum L. R. Abrams 1922-6-25 8252 Humboldt Arcata Comment
  HSC76429  Lilium kelleyanum Denis Kearns 1981-7-23 396 Humboldt Near Whiteys Peak. 1524 Comment
  CAS-BOT-BC130644  Lilium kelloggii Albert M. Vollmer; Ira L. Wiggins 1940-7-4 6 Humboldt On Orick-Weitchpec road, 15 miles west of Weitchpec 944 Comment
  CAS-BOT-BC130689  Lilium occidentale Doris K. Kildale 1925-6-30 1384 Humboldt On road to Humboldt Country Club 7 miles south of Eureka Comment
  UC1035025  Lilium occidentale A. M. Vollmer and L. Beane Jul 1953 118 Humboldt Comment
  UC1198245  Lilium occidentale Joseph P. Tracy 1938-7-15 16065 Humboldt 2 mi s Field's Landing (near Still Ranch) 6 Comment
  CAS-BOT-BC130730  Lilium pardalinum Volney Rattan 1878-6-16 s.n. Humboldt Arcata Comment
  SEINET3992215  Lilium pardalinum Unknown 1948-9-5 18196 Humboldt Trinity Summit, head of Little Hors-Linto Creek 1372 Comment
  HSC75956  Lilium pardalinum subsp. pardalinum Overton, Butler 1979-7-24 9774 Humboldt Near Black Rock, close to the town of Willow Creek 1463 Comment
  CAS-BOT-BC132964  Lilium rubescens Doris K. Kildale 1927-6-24 3538 Humboldt On top of ridge before taking down grade into Shelter Cove Comment
  HSC98357  Lilium vollmeri T. Jimerson, J. Pageau 1979-6-22 600 Humboldt Near Bee Mtn., close to the town of Orleans 656 Comment
  UC1198228  Lilium washingtonianum subsp. purpurascens Joseph P. Tracy 1947-7-9 17863 Humboldt Horse Mountain 1432 Comment
  UC1197413  Limnanthes douglasii Joseph P. Tracy 1922-5-29 6064 Humboldt Head of South Yager Creek Northern Coast Ranges 762 Comment
  UC902197  Limnanthes douglasii Joseph P. Tracy 1948-5-31 18009 Humboldt Harris 609 Comment
  UC1005603  Limnanthes douglasii Frank W. Gould 1939-5-29 836 Humboldt near ski hut; Horse Mountain 1005 Comment
  UC1197414  Limnanthes douglasii Joseph P. Tracy 1927-6-5 8106 Humboldt valley of South Yager Creek Northern Coast Ranges 762 Comment
  RSA21090  Limnanthes douglasii subsp. nivea Carl B. Wolf 1937-6-14 8818 Humboldt Kneeland Prairie; North Coast Range. 823 Comment
  HSC90320  Limonium californicum Jean Hanson 1980-6-22 102 Humboldt Indian (Gunther) Island, Humboldt Bay, city of Eureka: W side of dike on NW side of island. Comment
  JEPS58247  Linanthus bicolor Joseph P. Tracy 1937-5-17 15287 Humboldt Willow Creek Trinity River Valley 152 Comment
  UC1198572  Linanthus bicolor Joseph P. Tracy 1906-5-6 2437 Humboldt near Hydesville; Wolverton Gulch 60 Comment
  CDA6373  Linaria vulgaris E. C. Whitney 1964-8-12 Humboldt Zuber property, Orick. 0 Comment
  HSC12026  Linaria vulgaris D. Santana 1970-11-2 100 Humboldt E side of old Hwy. 1 in ditch Comment
  CAS-BOT-BC416392  Linnaea borealis subsp. longiflora H. M. Pollard 1942-9-12 s.n. Humboldt Near Orleans Comment
  HSC15800  Linum bienne W. F. Nickel 1965-4-28 Humboldt On Humboldt State Campus on S side of biological science building. Comment
  UC668019  Lipocarpha aristulata Joseph P. Tracy 1931-9-7 9650 c Humboldt Trinity River Valley, at Willow Creek Willow Creek; Trinity River Valley, Willow Creek 152 Comment
  RSA183495  Lithocarpus densiflorus var. densiflorus D. E. Anderson 1963-9-1 2805 Humboldt Near Kneeland. 732 Comment
  RSA1900  Lithocarpus densiflorus var. densiflorus Carl B. Wolf 1930-10-29 1783 Humboldt Old Coast Road, 4 mi. so. of Honeydew Post Office. 305 Comment
  HSC20213  Lithophragma affine Elrid H. Spinas 1948-6-16 49 Humboldt Horse Mtn. Comment
  UC1223119  Logfia gallica Joseph P. Tracy 1942-5-16 17338 Humboldt vicinity Garberville Comment
  UC167234  Lolium multiflorum Jos. Burtt Davy and W. C. Blasdale 1899-7-30 6201 Humboldt Russ Ranch Comment
  HSC27040  Lolium perenne Brad Klipfel 1973-8-24 283 Humboldt Roadside waste near Hwy. 101 Comment
  POM188113  Lolium perenne Marcus E. Jones 1931-7-16 29212 Humboldt Arcata. Comment
  JEPS16098  Lomatium californicum W. L. Jepson 1902-6-20 1892 a Humboldt Fort Seward Ranch Ridge (= Mail Ridge) 1219 Comment
  SEINET200763  Lomatium ciliolatum Joseph P. Tracy 1930-7-10 8869 Humboldt Brannan mountain Comment
  HSC36190  Lomatium dasycarpum subsp. dasycarpum Thomas W. Nelson, Jane P. Nelson, James Nelson 1975-6-14 1898 Humboldt Beside branch off FS 2S08 to Pine Mtn. Comment
  RSA0000726  Lomatium donnellii W. L. Jepson 1934-5-8 16716 Humboldt Redway, South Fork Eel River. Comment
  HSC55723  Lomatium macrocarpum G. L. Clifton, Terry Griswold 1979-7-26 10172 Humboldt Near Salmon Mtn., close to the town of Forks of Salmon 2058 Comment
  HSC70701  Lomatium macrocarpum Gail Newton 1980-7-15 1551 Humboldt Near Sims Mtn. 1311 Comment
  HSC75960  Lomatium macrocarpum Overton, Butler 1979-7-24 9738 Humboldt Near Black Rock, close to the town of Willow Creek. 1554 Comment
  UC1222756  Lomatium macrocarpum Joseph P. Tracy 1950-6-15 18823 Humboldt n.e. side Mail Ridge (at Huestis Rock); , Huestis Rock Comment
  HSC71822  Lomatium macrocarpum Thomas W. Nelson, Jane P. Nelson 1980-6-27 5937 Humboldt Along old trail to pond above Alder Spring, 0.5 mi. N of campground 1555 Comment
  UC1438145  Lomatium tracyi Barbara Kelly 1978-5-1 587 Humboldt 1/4 mi from Horse Mountain Road 1/2 mi below turnoff to summit, near end of unused gravel road Comment
  HSC37195  Lomatium utriculatum Barbara Kelly 1976-5-13 251 Humboldt Below road at Kneeland Airport Comment
  HSC58121  Lonicera conjugialis G. L. Clifton, Griswold 1979-8-1 12092 Humboldt Near N Trinity Mtn., close to the town of Hoopa 1799 Comment
  HSC58184  Lonicera conjugialis G. L. Clifton, Griswold 1979-8-2 12272 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  BLMAR175  Lonicera hispidula Donald Hazlett 1994-6-7 175 Humboldt King range, near horse Mt. Ridge rd 670 Comment
  CAS-BOT-BC240471  Lonicera hispidula Alice Eastwood; John Thomas Howell 1937-6-22 4733 Humboldt Near Alder Point Comment
  HSC61763  Lonicera hispidula var. vacillans Ruby Van Deventer 1963-7-1 Humboldt Along Klamath River at Pecwan. Comment
  HSC99849  Lonicera hispidula var. vacillans T. Jimerson, J. Pageau 1979-5-24 468 Humboldt Close to the town of Orleans. 2257 Comment
  POM72393  Lonicera involucrata P. A. Munz 1925-6-21 9893 Humboldt Clam Beach, N of Eureka. Comment
  SD88367  Lonicera involucrata Darley F. Howe 1972-5-7 Humboldt Trinidad head light station. Comment
  POM46694  Lonicera involucrata var. ledebourii L. R. Abrams 1916-7-18 6129 Humboldt Arcata to Trinidad. Comment
  HSC98252  Lotus aboriginus J. P. Tracy 1906-5-20 2462 Humboldt Eureka 0 Comment
  UC1197317  Lotus aboriginus J. P. Tracy 1902-7-4 1762 Humboldt immediate vicinity Eureka 0 Comment
  UC201735  Lotus aboriginus Volney Rattan Jun 1883 Humboldt near Kneeland Prairie (e of Eureka, in R.N. forest) Comment
  HSC26447  Lotus corniculatus Brad Klipfel 1973-4-28 16 Humboldt Along Canyon Creek, SW of Korbel Comment
  HSC98876  Lotus crassifolius var. crassifolius Cara Witte 2008-7-25 928 Humboldt Horse Mountain Botanical Area. At intersection of 6N36B and Forest Service Road 6N36A. 1355 Comment
  POM18325  Lotus formosissimus W. C. Blasdale 1896-5-31 7471 Humboldt Eureka Comment
  UC15617  Lotus humistratus C. C. Marshall 1888-1 Humboldt Comment
  UC15566  Lotus nevadensis var. nevadensis Harley P. Chandler 1901-6-14 1487 Humboldt Orleans to Sommes Bar; North Coast Ranges, Klamath River 426 Comment
  UC727682  Lotus nevadensis var. nevadensis Milo S. Baker 1946-6-14 11490 Humboldt hwy about 1/3 way up South Fork Mt. South Fork Mt. Comment
  SEINET12154246  Lotus oblongifolius J. P. Tracy 1936-1 14856 Humboldt Lack Pond, in Trinity River Valley, opposite mouth of Willow Crk 152 Comment
  UC33561  Lotus oblongifolius var. oblongifolius Chesnut and Drew Aug 1888 Humboldt mouth of Grouse Creek Grouse Creek Comment
  JEPS55780  Lotus purshianus var. purshianus Joseph P. Tracy 1923-6-17 6266 Humboldt Dows Prairie Northern Coast Ranges 60 Comment
  HSC38527  Lotus unifoliolatus var. unifoliolatus D. E. Anderson, J. P. Smith 1971-6-18 - 1069 Humboldt Chezem Rd., about 3 mi. E of bridge over Redwood Creek Comment
  RSA168887  Lotus yollabolliensis Joseph P. Tracy 1941-8-28 17048 Humboldt South Fork Mountain; open glades along summit near Blake lookout 1738 Comment
  CAS-BOT-BC342555  Luina hypoleuca L. B. Kildale 1930-7-7 10262 Humboldt Chaparall [Chaparral] Mt at Bug Creek 914 Comment
  CAS-BOT-BC201190  Lupinus Charles Piper Smith 1947-7-11 47643 Humboldt Highway 101 - McKinleyville, 1.3 miles north Comment
  UC15888  Lupinus adsurgens Chesnut and Drew 1888-7-21 Humboldt South Fork Mt.; ; S of Fort Mt., Humboldt Co. Comment
  SEINET10936548  Lupinus adsurgens var. adsurgens Chestnut 1888-7-21 CHESTNUT s.n. Humboldt Type photo. W side south fork mountain. Comment
  RSA167471  Lupinus albifrons var. albifrons Joseph P. Tracy 1951-6-16 19472 Humboldt Near Oregon-California State Line. Comment
Read comments
Jul 12 2012
  UC1197255  Lupinus arboreus J. P. Tracy 1912-3-31 3566 Humboldt Blue Lake 30 Comment
  SEINET10452624  Lupinus arboreus Mary Susan Taylor 1990-8-22 Taylor 6070 Humboldt Samoa Recreation Area on Samoa Peninsula, Staging Area, Eureka. Coastal scrub in ORV area. Comment
  UC146976  Lupinus arboreus Harley P. Chandler May, 1901 1238 Humboldt near Vance (on Mad River); North Coast Ranges, on Mad River 91 Comment
  SEINET6932626 Image available Lupinus bicolor Wanda P. Vestal, A. G. Vestal 1937-6-23 s.n. Humboldt Saddle near east end of Bald Hills, southeast of Orick. Comment
  UC503014  Lupinus elmeri Joseph P. Tracy Jul 16 1930-Jul 19 1930 8954 Humboldt near Blake lookout (South Fork Mountain); Northern Coast Ranges, South Fork Mountain 1737 Comment
  RSA167398  Lupinus formosus var. formosus Joseph P. Tracy 1941-9-1 16997 Humboldt Blue Lake. Comment
  HSC102056  Lupinus latifolius M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-13 961 Humboldt Patterson Meadows 1555 Comment
  HSC57313  Lupinus latifolius Griswold, Butler 1979-7-10 6326 Humboldt Near Board Camp Mtn., close to the town of Willow Creek 1372 Comment
  HSC75464  Lupinus latifolius J. O. Sawyer 1980-7-18 3613 Humboldt North Trinity Mountain Research Natural Area, north of Mill Creek Lake to Red Cap Hole. Comment
  SD113410  Lupinus latifolius Darley F. Howe 1962-5-21 3296 Humboldt 11.5 miles north of Garberville on Hwy 101 91 Comment
  HSC63291  Lupinus latifolius subsp. viridifolius M. A. Baker 1979-6-27 936 Humboldt Drainage E of Oregon Creek. Comment
  POM10720  Lupinus latifolius subsp. viridifolius H. P. Chandler 1901-06 13658 Humboldt Klamath River. 152 Comment
  HSC102602  Lupinus latifolius var. viridifolius M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-28 1589 Humboldt Slopes above Bret Hole and below trail 6E18, 1.5 km SSW of Trinity Summit. 1778 Comment
  UC774981  Lupinus luteolus Carl B. Wolf 1937-8-12 9211 Humboldt on road to Kneeland 20 mi n Bridgeville; North Coast Range 457 Comment
  UC667008  Lupinus nanus Joseph P. Tracy 1939-4-29 16231 Humboldt Hoopa Valley 106 Comment
  UC1949190  Lupinus nanus Barbara Ertter with Thomas J. Delendick 1987-5-16 6923 Humboldt Vista Point just W of Berry Summit on Hwy 299, ca 15 airmiles E of Arcata; S-facing slope Comment
  SEINET6932723 Image available Lupinus polycarpus Wanda P. Vestal, A. G. Vestal 1937-6-22 s.n. Humboldt About 4 miles southeast of Kneeland. Comment
  UC1197252  Lupinus polyphyllus var. polyphyllus Joseph P. Tracy 1897-6-23 202 Humboldt Elk River Valley Northern Coast Region, Humboldt Bay Region, Elk River Valley (region about Humboldt Bay) 0 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
  UC180177  Lupinus polyphyllus var. polyphyllus Joseph P. Tracy 1914-7-4 4542 Humboldt High Prairie; on Bald Mountain Bald Mountain; Northern Coast Ranges, Bald Mountain 1066 Comment
  UC204631  Lupinus rivularis Joseph P. Tracy 1918-9-8 5099 Humboldt Eureka; Northern Coast Ranges, at Eureka 0 Comment
  SBBG13907  Lupinus rivularis H. and M. Dearing 1939-6-23 3694 Humboldt 12 mi E of Arcata Comment
  SEINET10837864  Lupinus rivularis Donald E. Bright 1962-6-11 Bright 276 Humboldt Growing with hemlock and redwood, 1 mi n of trinidad. Comment
  POM10718  Lupinus sellulus var. medius H. P. Chandler 1498 Humboldt Klamath River. 427 Comment
  HSC46925  Lupinus tracyi Brad Klipfel 1973-8-3 308 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC58361  Lupinus tracyi G. L. Clifton, Griswold 1979-7-26 10194 Humboldt Near Salmon Mtn., close to the town of Forks of Salmon 2058 Comment
  UC502995 Image available Lupinus tracyi Joseph P. Tracy 1932-7-15 10598 Humboldt ridges e Corral Prairie; Klamath Mountains, Trinity Summit; Trinity summit, Humboldt Co. 1828 Comment
  RSA167382  Lupinus variicolor Joseph P. Tracy 1938-7-11 16046 A Humboldt Brainards Point, sandy soil along highway between Eureka and Arcata. Comment
  SD53197  Lupinus variicolor Darley F. Howe 1962-5-21 Humboldt 11.5 miles north of Garberville on Hwy 101 91 Comment
  HSC64637  Luzula comosa Ruby Van Deventer 1959-6-20 Humboldt Humboldt-Del Norte county line, Onion Lake 1220 Comment
  HSC74630  Luzula comosa M. A. Baker 1980-5-17 1239 Humboldt Near Le Perron Peak 1066 Comment
  UC1103677  Luzula comosa Joseph P. Tracy 1901-5-21 1101 Humboldt at Eureka; Northern Coast Region, at Eureka 0 Comment
  HSC49098  Luzula comosa J. O. Sawyer 1977-4-23 2838 Humboldt Along Bald Hills Rd. E of Hoopa Comment
  HSC77385  Luzula comosa L. P. Janeway 1983-5-29 321 Humboldt Along Jolly Giant Creek, E of HSU campus 61 Comment
  HSC98824  Luzula comosa Cara Witte 2007-5-24 117 Humboldt Along National Forest 1. Approximately 1 mile south of intersection to Horse Mountain Mine and Communication Towers. 1412 Comment
  UC249754  Luzula macrantha Joseph P. Tracy 1923-6-24 6368 Humboldt Northern Coast Ranges. In cold wet meadow near High Prairie; Bald Mountain 1066 Comment
  HSC45017  Luzula multiflora subsp. multiflora R. Sutherland 1978-4-24 4 .24478 Humboldt Kinsey Ridge above Oat Creek 396 Comment
  UC184187  Luzula parviflora Joseph P. Tracy 1900-5-28 810 Humboldt at Eureka; Northern Coast Region, at Eureka 0 Comment
  SEINET8717658 Image available Luzula parviflora H. E. Parks, S. T. Parks 1952-1 22446 Humboldt Bishop Pine Lodge. Trinidad. Comment
  HSC102061  Luzula parviflora subsp. parviflora M. R. Mesler, Robin Bencie, K. A. Wayman 2011-7-12 1162 Humboldt Patterson Meadows 1566 Comment
  RSA183532  Lycopodiella inundata D. E. Anderson 1963-9-6 2808 Humboldt Big Lagoon Sphagnum Bog Comment
  CAS-BOT-BC61935  Lycopodium clavatum Doris K. Kildale 1929-2-4 6883 Humboldt Trinidad 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
  JEPS370  Lycopodium clavatum Joseph P. Tracy 1932-8-13 10341 Humboldt woods around a swamp 3 mi e Trinidad; Northern Coast Region 152 Comment
  CHSC2104  Lysichiton americanus M. Anthony 1960-5-14 Humboldt N. coastal. Comment
  POM68322  Lysichiton americanus Marcus E. Jones 1924-05 s.n. Humboldt Scotia. [county not specified] Comment
Read comments
Dec 31 2015
  JEPS45971  Lythrum hyssopifolia W. L. Jepson 1902-8-4 2146 Humboldt near Petrolia ( Expedition from Ukiah to the Hupa Indian Reservation) Comment
  HSC49359  Lythrum hyssopifolia R. York 1979-5-18 302 Humboldt Along railroad tracks near the Arcata Redwood office along Hwy. 101 between Arcata and Eureka. Comment
  RSA0015856  Lythrum hyssopifolia J. B. Feudge 1923-7-22 168 Humboldt Fortuna. 15 Comment
  HSC34699  Madia elegans Thomas W. Nelson 1974-8-24 1704 Humboldt Klamath River ca. 2 mi. below the mouth of Aikins Creek Comment
  CAS-BOT-BC343019  Madia gracilis Joseph P. Tracy 1934-7-18 13432 Humboldt North Coast Ranges. Grouse Mountain 1524 Comment
  CAS-BOT-BC343027  Madia gracilis Doris K. Kildale 1928-6-24 5282 Humboldt Horse Mountain 914 Comment
  HSC58706  Madia gracilis Griswold, Butler 1979-7-10 7133 Humboldt Near Board Camp Mtn., close to the town of Willow Creek. 1350 Comment
  UC127609  Madia gracilis Mrs. M. H. Manning June, 1902 Humboldt Hupa Comment
  CHSC2298  Maianthemum dilatatum M. Anthony 1960-5-14 Humboldt Arcata. Comment
  HSC15589  Maianthemum dilatatum Wm. F. Bowman 1968-10-26 Humboldt Big Lagoon County Park, SW corner of Big Lagoon. Comment
  CAS-BOT-BC508504  Maianthemum dilatatum Myrtle Paulson 1918-4-28 s.n. Humboldt Eureka Comment
  CAS-BOT-BC508512  Maianthemum dilatatum H. C. Cantelow 1936-5-18 s.n. Humboldt 5 miles north of Orick Comment
  CAS-BOT-BC508520  Maianthemum dilatatum Ella Dales Cantelow 1936-5-18 1354 Humboldt 5 miles north of Orick Comment
  RSA376909  Maianthemum dilatatum Charlotte M. Hoak 1931-7-15 s.n. Humboldt Big Lagoon Comment
  RSA41939  Maianthemum dilatatum H. C. Cantelow 1935-5-30 s.n. Humboldt 8 miles north of Orick Comment
  HSC74330  Maianthemum racemosum subsp. amplexicaule Gail Newton 1980-6-16 145 Humboldt Near Monks Camp. 1097 Comment
  HSC103295  Maianthemum stellatum Michael G. Simpson, Michael Mesler, Michael Mayer 2008-5-27 3010 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. 1401 Comment
  HSC74431  Maianthemum stellatum Gail Newton 1980-8-10 2061 Humboldt Near Blake Mtn. 1707 Comment
  UC614810  Malacothrix floccifera Beryl O. Schreiber 1932-7-11 365 Humboldt road s Garberville Comment
  CAS-BOT-BC540127  Malus domestica Jay B. Walker 1995-4-26 1386 Humboldt Six Rivers National Forest. Hwy 36. 2km W of town of Cobbs. 800 Comment
  CAS-BOT-BC140133  Malus fusca W. R. Dudley 1899-6-21 s.n. Humboldt Englewood Pastures - Eel River Comment
  UC1198762  Malus fusca Joseph P. Tracy 1926-4-11 7410 Humboldt Blue Slide Northern Coast Ranges (on Van Duzen River) 91 Comment
  CHSC46890  Marah oregana R. A. Schlising 1963-6-4 2584 Humboldt South of Orick, along Hwy 101 at Big Lagoon. Comment
  SJSU11759  Marah oregana R. D. Spadoni 1965-3-26 Humboldt Trinidad Comment
  UCR51832  Marah oregana J. D. Ackerman 1975-6-10 451 Humboldt Humboldt Bay, c. 1 mi. north of Samoa bridge turnoff from Samoa Blvd., south of Manila Comment
  HSC59209  Marah oregana Terry Roth 1979-5-26 89 Humboldt Arcata, Jct. of Western Ave. and Grant Ave. Comment
  UC162809  Medicago polymorpha J. P. Tracy 1909-8-15 3076 Humboldt Immediate vicinity of Eureka 0 Comment
  HSC79492  Medicago polymorpha Kenneth Clark 1980-6-15 700 Humboldt 300 yards SE of Dead Man's Gulch 8 Comment
  HSC43158  Medicago praecox R. Sutherland 1976-8-19 4 .19876 Humboldt 259 Comment
  UC673065  Medicago sativa Joseph P. Tracy 1934-7-15 13407 Humboldt 2 mi s Fields Landing; Humboldt Bay Region 9 Comment
  SEINET200337 Image available Melica californica J. P. Tracy 1921-5-30 5491 Humboldt Kneeland Prairie 762 Comment
  UC1103758  Melica fugax Joseph P. Tracy 1936-7-5 15041 Humboldt Grouse Mountain 1524 Comment
  UC277171  Melica harfordii Joseph P. Tracy 1921-6-19 5833 Humboldt Berry's Mountain; Northern Coast Ranges 914 Comment
  UCD87570  Melica harfordii H. S. Yates 1936-6-17 5721 Humboldt Near Burr Valley. 914 Comment
  CAS-BOT-BC281025  Melica stricta Joseph P. Tracy 1935-7-30 14377 Humboldt W side at top of Salmon Summit 2103 Comment
  CAS-BOT-BC262472  Melica subulata Joseph P. Tracy 1935-7-25 14224 Humboldt Trinity Summit. Near Corral Prairie 1584 Comment
  UC184151  Melica subulata Joseph P. Tracy 1912-7-27 3883 Humboldt Kneeland Prairie; North Coast Ranges 762 Comment
  UC526919  Melica subulata Joseph P. Tracy 1933-5-28 12416 Humboldt Carlotta; Northern Coast Ranges 60 Comment
  HSC15016  Melilotus indicus D. E. Anderson 1961-9-2 1762 Humboldt 3 mi. S of Cape Mendocino 3 Comment
  HSC15012  Melilotus officinalis Paul Shields 1955-9-29 Humboldt 1/2 mi. S of Fernbridge Comment
  UC1222473  Melilotus officinalis Joseph P. Tracy 1949-7-7 18337 Humboldt Blue Slide Van Duzen River 91 Comment
  UC577386  Melissa officinalis Joseph P. Tracy 1927-11-24 8395 Humboldt farmyard Carlotta 60 Comment
  HSC90755  Mentha pulegium Gail Newton 1983-8-21 3856 Humboldt Elk River Wildlife Area, Eureka. Comment
  UCR123947  Mentha pulegium George K. Helmkamp, E. A. Helmkamp 2001-7-8 6987 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
  RSA12460  Mentha pulegium Carl B. Wolf 1934-6-30 5833 Humboldt 0.5 mile from Briceland on road to Garberville. 91 Comment
  JEPS63445  Mentha suaveolens W. L. Jepson 1936-8-11 17866 Humboldt South Fork Eel River Philipsville (Philipsville); South Fork Eel River Comment
  HSC36233  Menziesia ferruginea subsp. ferruginea John Rehling 1975-5-8 63 Humboldt E of Humboldt State University Campus, Arcata Comment
  UC582506  Micropus californicus var. californicus Joseph P. Tracy 1927-7-4 8235 Humboldt Iaqua 609 Comment
  CAS-BOT-BC348503  Micropus californicus var. californicus S. K. Harris; J. P. Tracy 1942-6-15 s.n. Humboldt Harris Road, 1 mile east of Garberville 30 Comment
  UC1199337  Micropus californicus var. californicus Joseph P. Tracy 1906-7-4 2528 Humboldt near Hydesville; Northern Coast Region, Yager Creek 60 Comment
  UC164802  Micropus californicus var. californicus Joseph P. Tracy 1906-7-4 2527 Humboldt near Hydesville (Yager Creek); Northern Coast Region, Yager Creek 60 Comment
  UC204748  Microseris bigelovii Joseph P. Tracy 1918-7-3 4993 Humboldt Shelter Cove Northern Coast Ranges 15 Comment
  CAS-BOT-BC349237  Microseris nutans Joseph P. Tracy 1930-7-16 8900 Humboldt South Fork Mountain. Near McKay Camp 1676 Comment
  UC582733  Microseris nutans Joseph P. Tracy 1930-7-16 8901 Humboldt near McKay Camp; South Fork Mountain 1676 Comment
  HSC58236  Microsteris gracilis Walter Overton 1979-8-1 12394 Humboldt Near Mill Creek, Middle Fork, close to the town of Hoopa. 1341 Comment
  HSC27389  Mimulus aurantiacus var. aurantiacus Thomas W. Nelson 1970-10-31 287 Humboldt Beside railroad tracks at the N end of the Scotia Bluffs Comment
  JEPS10240  Mimulus aurantiacus var. aurantiacus Joseph P. Tracy 1934-6-19 13235 Humboldt Carlotta 60 Comment
  UC1063400  Mimulus aurantiacus var. aurantiacus A. E. Wieslander 1931-5-22 217 Humboldt hills s Ferndale; Cape Fortuna Quadrangle Comment
  UC1011928  Mimulus aurantiacus var. aurantiacus Francis W. Pennell 1940-7-8 26109 Humboldt above beach s Trinidad; Route 101 30 Comment
  HSC39618  Mimulus breweri Thomas W. Nelson, Jane P. Nelson 1976-6-15 2722 Humboldt Along old trail from lookout to Blocksburg 1585 Comment
  HSC55989  Mimulus breweri Overton, Butler 1979-7-31 11404 Humboldt Near Water Dog Lakes, close to the town of Hoopa 1830 Comment
  HSC23725  Mimulus cardinalis Tim Baroni 1971-8-1 151 Humboldt 8 mi. E of Petrolia on the Mattole River Comment
  HSC39160  Mimulus dentatus D. E. Anderson, J. P. Smith 1971-6-28 Humboldt Along Mad River, 2 mi. S of Blue Lake. Comment
  UCSB15934  Mimulus dentatus Breedlove, Dennis 1962-6-8 Humboldt along U.S. Highway 101; 8 miles north of Orick 60 Comment
  UC1196790  Mimulus douglasii Joseph P. Tracy 1921-4-24 5468 Humboldt Phillipsville Northern Coast Ranges, South Fork of Eel River 121 Comment
  UC175795  Mimulus guttatus Joseph P. Tracy 1912-7-26 3825 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  HSC20729  Mimulus guttatus D. E. Anderson 1961-8-25 1741 Humboldt 1.5 mi. S of Trinidad Comment
  HSC95361  Mimulus guttatus Andrea Pickart 2002-8-7 198 Humboldt Arcata Bottoms; Along Lanphere Rd. 0 Comment
  JEPS10788  Mimulus inodorus Joseph P. Tracy 1923-9-16 6551 Humboldt near South Fork; Trinity River Valley 182 Comment
  UC582479  Mimulus inodorus Joseph P. Tracy 1933-8-6 12949 Humboldt French Camp Ridge 1066 Comment
  UC1196812  Mimulus kelloggii Joseph P. Tracy 1922-5-29 6080 Humboldt head South Yager Creek; Northern Coast Ranges 762 Comment
  UC162580  Mimulus layneae Joseph P. Tracy 1911-7-8 3443 Humboldt near mouth Willow Creek; Northern Coast Ranges, Valley of Trinity River 152 Comment
  UC1196803  Mimulus layneae Joseph P. Tracy 1937-7-5 15373 Humboldt Willow Creek Trinity River Valley 152 Comment
  HSC33170  Mimulus moschatus Thomas W. Nelson 1973-8-19 1110 Humboldt McKeown Ranch N of Dinsmore Comment
  HSC55881  Mimulus moschatus G. L. Clifton, Griswold 1979-7-25 10946 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1784 Comment
  HSC56317  Mimulus moschatus Overton, Butler 1979-8-2 12656 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  HSC75474  Mimulus moschatus J. O. Sawyer 1980-7-18 3621 Humboldt North Trinity Mountain Research Natural Area, north of Mill Creek Lake to Red Cap Hole. Comment
  UC582597  Mimulus nanus var. nanus Joseph P. Tracy 1937-7-29 15597 Humboldt Hyampon Trail South Fork Mountain 1676 Comment
  HSC56178  Mimulus primuloides G. L. Clifton 1979-8-1 12086 Humboldt Near N Trinity Mtn., close to the town of Hoopa. 1798 Comment
  SEINET11943610  Minuartia douglasii J. P. Tracy 1950-1 18993 Humboldt 2 mi S of Burr Valley on Albee Road, Bridgeville to Blocksburg 1158 Comment
  HSC74236  Minuartia nuttallii subsp. gregaria M. A. Baker 1980-7-11 2794 Humboldt Near Red Mtn. 1341 Comment
  UC11410  Mitella diversifolia J. Burtt Davy 1899-6-23 5753 Humboldt about half way to summit; North Coast Ranges, Trinity Summit Comment
  CHSC97981  Moehringia macrophylla J. McIntire; S. Lyon 2005-6-10 7 Humboldt 7.4 mi south of Hwy 299 on Forest Service Rd. NF1. Cold Springs Camp. 1402 Comment
  HSC74371  Moehringia macrophylla M. A. Baker 1980-6-16 1950 Humboldt Near Onion Mtn. 1280 Comment
  UCD125282  Monardella odoratissima John M. Tucker 1948-9-3 1853 Humboldt Six Rivers National Forest (formerly part of Trinity National Forest), on Horse Mountain at junction of road to Grouse Mt. and road to Horse Mt. Mine. 1463 Comment
  CAS-BOT-BC221969  Monardella odoratissima subsp. glauca Henry M. Pollard 1943-8-1 s.n. Humboldt Orleans Mt. 1828 Comment
  UC577361  Monardella odoratissima subsp. glauca Joseph P. Tracy 1933-7-26 12913 Humboldt Grouse Mountain North Coast Ranges 1630 Comment
  JEPS51853  Monardella odoratissima subsp. pallida Hilda W. Grinnell 1932-7-19 26 Humboldt Near Camp McKay on South Fork Mountain Comment
  RSA0022793  Monardella villosa subsp. subserrata C. Epling, Wm. Robinson 1935-7-24 s.n. Humboldt Dyerville. Comment
  UC161061  Montia diffusa Joseph P. Tracy 1911-7-7 3404 Humboldt 3 mi nw of junction of Willow Creek with Trinity River (near Beebe's Ranch); Northern Coast Ranges 914 Comment
  CAS-BOT-BC445151  Montia parvifolia I. L. Wiggins 1932-7-7 5879 Humboldt Near Samoa Comment
  CAS-BOT-BC445161  Montia parvifolia Henry M. Pollard 1948-7-24 s.n. Humboldt Along road near Orleans Comment
  HSC17671  Montia parvifolia Doris K. Kildale 1925-6-14 671 Humboldt Yager Comment
  HSC16100  Morella californica P. Markle 1962-5-24 63 Humboldt Edge of 18th St. in Arcata 30 Comment
  UCD110310  Morella californica T. I. Storer 1931-7-1 2220 Humboldt Near Samoa. Comment
  CAS-BOT-BC260572  Muhlenbergia filiformis Joseph P. Tracy 1933-7-25 12833 Humboldt Grouse Mountain 1524 Comment
  HSC77885  Myriophyllum aquaticum Wendy Madar 1978-5-16 Humboldt Catfish Lake, 3 mi. S Eureka Comment
  HSC15607  Narcissus pseudonarcissus D. B. Mitchell 1965-3-13 - 6 Humboldt 0.5 mi. N of US Coast Guard Station on Samoa Rd. Comment
  JEPS62076  Narthecium californicum Hilda W. Grinnell 1932-7-12 11 Humboldt below McKay Camp (S. Fork Mt.); S. Fork Mt. Comment
  HSC12786  Nasturtium officinale M. J. Athey 1970-10-28 5 Humboldt Along old road to Trinidad, along E bank, Trinidad Comment
  HSC6871  Nasturtium officinale D. E. Anderson 1961-9-13 1815 Humboldt Trinidad Beach Comment
  HSC56181  Navarretia divaricata G. L. Clifton, Griswold 1979-8-1 12097 Humboldt Near N Trinity Mtn., close to the town of Hoopa. 1798 Comment
  HSC81574  Navarretia mellita Thomas W. Nelson, Jane P. Nelson 1980-7-15 6068 Humboldt Old logging rds. SE of Lundbar Hills 30 Comment
  SEINET12279161  Navarretia pubescens J. P. Tracy 1950-1 18861 Humboldt Dobbyn Creek, 3 mi NE of Alderpoint 213 Comment
  SEINET200382  Navarretia squarrosa J. P. Tracy 1904-7-31 2135 Humboldt Immediate vicinity of Eureka. 0 Comment
  UC146171  Navarretia squarrosa J. P. Tracy 1904-7-31 2135 Humboldt immediate vicinity Eureka 0 Comment
  UCD48693  Navarretia squarrosa John M. Tucker 1948-9-4 1862 Humboldt Beck's Ranch, Hydesville, Humboldt County, California. Comment
  UC1245398  Nemophila heterophylla Joseph T. Gregory 1937-5-17 1213 Humboldt e side Trinity River , Willow Creek, Graham Ranch (Graham Ranch, Willow Creek) 152 Comment
  HSC97503  Nemophila menziesii var. atomaria C. Witte 2007-5-8 1 Humboldt Cold Spring. 1/2 mile south of Titlow Hill. 1410 Comment
  HSC34946  Nemophila menziesii var. atomaria Robert M. Specht 1975-4-9 120 Humboldt 2 3/4 mi. N of Trinidad at Scotty Point 30 Comment
  CAS-BOT-BC219407  Nemophila parviflora M. S. Jussel 1931-5-2 92 Humboldt Sylvandale, 8 miles N. of Garberville Comment
  UC146186  Nemophila parviflora Joseph P. Tracy 1908-6 2726 Humboldt opposite Buck Mountain (Valley of Van Duzen River); Northern Coast Ranges, Valley Van Duzen River 304 Comment
  UC562595  Nemophila parviflora Joseph P. Tracy 1932-7-13 10492 Humboldt near Corral Prairie (Trinity Summit); , near Corral Prairie 1584 Comment
  UC562593  Nemophila pedunculata Joseph P. Tracy 1925-4-5 6957 Humboldt at crossing Kneeland Road (Lawrence Creek); Lawrence Creek 457 Comment
  HSC6967  Noccaea fendleri subsp. californica Paul Shields May 1955 Humboldt Kneeland Comment
  CAS-BOT-BC60565  Noccaea fendleri subsp. glauca Lincoln Constance; Reed C. Rollins 1942-5-11 2877 Humboldt North Coast Ranges. Hoopa Valley 5 miles south of Hoopa. 121 Comment
  HSC37836  Notholithocarpus densiflorus var. echinoides Thomas W. Nelson, Jane P. Nelson 1976-2-21 2247 Humboldt Beside the Hoopa-Redwood Valley Rd. ca. 5 mi. W of Hoopa Comment
  CAS-BOT-BC400077  Nuphar polysepala Carl B. Wolf 1937-9-9 9309 Humboldt 1 mi. So. of Capetown on road to Cape Mendocino 91 Comment
  HSC36066  Nuphar polysepala Wm. Henry 1973-5-12 Humboldt Clam Beach Lagoon, .5 mi. S of Little River Comment
  HSC62976  Nuphar polysepala David Wheeler 1979-5-18 117 Humboldt Fieldbrook Elementary School, behind the baseball field Comment
  CAS-BOT-BC142298  Oemleria cerasiformis Doris K. Kildale 1927-3-26 2996 Humboldt Warren Creek, Lower Mad River Comment
  UC1198782  Oemleria cerasiformis Joseph P. Tracy 1913-3-30 4030 Humboldt near Eureka (at Stephen Hill place); Northern Coast Region 0 Comment
  UC1198785  Oemleria cerasiformis Joseph P. Tracy 1923-4-1 6172 Humboldt Blue Lake; Northern Coast Ranges 60 Comment
  HSC12413  Oenothera glazioviana D. Santana 1970-11-2 98 Humboldt 1 mi. S of Trinidad Comment
  POM224765  Oenothera glazioviana P. A. Munz 1936-8-13 14384 Humboldt 7 miles east of Arcata. Comment
  HSC34915  Orobanche uniflora Thomas W. Nelson, James Nelson 1975-5-24 1843 Humboldt McKeown Ranch, N of Dinsmore. Comment
  JEPS25708  Orobanche uniflora subsp. occidentalis P. C. Hutchison 1961-5-22 2018 Humboldt North side of Highway US 299 2.6 miles E of Berry Summit along south side of Willow Creek. Comment
  HSC100092  Orthilia secunda Jimerson, J. Pageau 1979-6-12 538 Humboldt Near Hopkins Butte, close to the town of Orleans 1036 Comment
  UC41915  Orthocarpus imbricatus Chesnut and Drew Aug. 1888 Humboldt head of Redwood Creek Comment
  HSC55862  Osmorhiza berteroi G. L. Clifton, Terry Griswold 1979-7-25 10871 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1784 Comment
  HSC56006  Osmorhiza berteroi Overton, Butler 1979-7-31 11474 Humboldt Near N Trinity Mtn., close to the town of Hoopa 1940 Comment
  HSC96211  Osmorhiza berteroi April A. Allard, Gregory D. O'Connell 2005-6-8 6 Humboldt 1.7 mi. S of Hwy. 299 on Titlow Hill Rd. 1005 Comment
  UC314579  Osmorhiza berteroi Joseph P. Tracy 1923-6-19 6291 Humboldt Upper Mattole Valley Northern Coast Ranges 152 Comment
  HSC53833  Osmorhiza occidentalis Terry Griswold, Butler 1979-7-10 6281 Humboldt Near Board Camp Mountain 1372 Comment
  HSC12761  Oxalis articulata subsp. rubra M. J. Athey 1970-11-8 12 Humboldt Along Arcata blvd., in Arcata. Comment
  UC1541318  Oxalis oregana H. E. and S. T. Parks May 1930 743 Humboldt along Van Duzen River Comment
  HSC83316  Oxalis oregana R. W. Becking 1987-5-2 Humboldt Humboldt State University campus, adjacent to back steps on S side of Natural Resources building Comment
  SD64137  Oxalis oregana W. Bertsch 1953-7-30 223 Humboldt Redwoods-Dyerville Highway 101. 60 Comment
  POM204618  Panicum acuminatum var. acuminatum A. S. Hitchcock 1915-7-13 527 Humboldt Eureka Comment
  POM366049  Panicum oligosanthes var. scribnerianum Henry M. Pollard 1947-8-30 s.n. Humboldt Near Wilson Creek, on Klamath River, (near Orleans) Comment
  HSC13259  Parapholis incurva D. E. Anderson 1965-6-10 3786 Humboldt E part of Eureka. Comment
  UCSB12235  Parentucellia viscosa Breedlove, Dennis 1961-7-4 Humboldt 13 mi W of U.S. 101 on U.S. 299 near crossing of Mad River 228 Comment
  HSC23740  Parentucellia viscosa Tim Baroni 1971-10-14 195 Humboldt Trinidad, above Luffenholtz Beach on old Hwy. 101 Comment
  HSC27047  Parentucellia viscosa Brad Klipfel 1973-8-25 290 Humboldt Near Lazy L Ranch, Fickle Hill Rd. Comment
  SEINET10898170  Parentucellia viscosa Mary Susan Taylor 1977-8-2 Taylor 1425 Humboldt In mountains above and east of Eureka. Comment
  UC667097  Parnassia californica Joseph P. Tracy 1934-8-29 13619 Humboldt South Fork Mountain at McKay Camp South Fork Mountain; , McKay Camp 1676 Comment
  RSA10097  Paspalum distichum Joseph P. Tracy, H. E. Parks 1924-8-3 6779 Humboldt Big Lagoon 6 Comment
  JEPS10351  Pedicularis densiflora Joseph P. Tracy 1927-5-15 8060 Humboldt near summit on road w from Hoopa to Bair's; Northern Coast Ranges, Hoopa Mountain 1066 Comment
  CAS-BOT-BC69342  Pellaea brachyptera L. B. Kildale 1930-8-3 10346 Humboldt Chaparral Mt. at Bug Creek 914 Comment
  UC1242078  Pellaea mucronata var. mucronata Donald Branscomb April, 1959 Humboldt Bear Butte 868 Comment
  HSC55678  Penstemon anguineus Walter Overton, Marvin Butler 1979-7-26 9929 Humboldt Near Willow Creek, E Fork, close to the town of Willow Creek 1326 Comment
  HSC56254  Penstemon anguineus Walter Overton 1979-8-1 12387 Humboldt Near Packsaddle Ridge, close to the town of Hoopa 1341 Comment
  HSC76044  Penstemon anguineus Walter Overton, Marvin Butler 1979-8-2 12564 Humboldt Near Bret Hole, close to the town of Hoopa. 1554 Comment
  RSA46785  Penstemon anguineus Doris Kildale Gillespie 1937-8-12 15261 Humboldt South Fork Mountain. Comment
  BLMAR213  Penstemon anguineus Jennifer Anthony-Wheeler 1996-7-9 213 Humboldt Pilots ridge., open gen. Loggged areas of +/- conf. Forest 1402 Comment
  HSC56218  Penstemon deustus G. L. Clifton, Terry Griswold 1979-8-2 12241 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  UC146234  Penstemon heterophyllus var. purdyi Joseph P. Tracy 1908-6 2804 Humboldt opposite Buck Mountain (Valley of Van Duzen River); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  HSC35697  Penstemon laetus subsp. sagittatus Thomas W. Nelson, B. Reinhardt 1975-7-30 2104 Humboldt Along road out Whiting Ridge Comment
  RSA517741  Penstemon newberryi subsp. berryi W. K. Parks 1933-07 s.n. Humboldt South Fork Mountain. Comment
  UC1543128  Penstemon newberryi var. berryi W. K. Parks Jul 1933 1433 Humboldt South Fork Mountain Comment
  NY640969  Penstemon purpusii J. P. Tracy 1935-7-14 14073 Humboldt Grouse Mountain Comment
  JEPS26255  Penstemon rattanii Arthur E. Connick 1925-6-1 Humboldt hills near Stone Lagoon; hills near Stone Lagoon 60 Comment
  CAS-BOT-BC413712  Persicaria hydropiper Carl D. Duncan 1920-9-22 s.n. Humboldt Hoopa Valley Comment
  SEINET3926008  Persicaria maculosa Norman Dennis 1965-6-8 109 Humboldt Samoa Peninsula along the west side of Humboldt Bay.; 0 Comment
  CAS-BOT-BC419741  Persicaria wallichii Mrs. C. D. Herriott 1954-9-2 s.n. Humboldt Along Redwood Highway between Trinidad Head and Patrick Point Comment
  HSC98989  Petasites frigidus var. palmatus Cara Witte 2008-6-4 680 Humboldt Horse Mountain Botanical Area. Forest Service Road 6N38. Near Horse Mountain mine. 1276 Comment
  SEINET12118794  Peucedanum tomentosum H. P. Chandler 1901-1 1445 Humboldt Klamath River, North Coast Ranges 274 Comment
  HSC13622  Phacelia bolanderi D. E. Anderson 1963-5-25 2471 Humboldt About 1 mi. W of Fernbridge along Rd. to Ferndale Comment
  JEPS1443  Phacelia bolanderi W. L. Jepson 1902-6 1910 Humboldt Hubbard's Station to Camp Grant (cliffs of river); Eel River 60 Comment
  POM287459  Phacelia bolanderi Lyman Benson 1929-7-16 1839 Humboldt Dyerville Junction of North and South Forks of Eel River. Comment
  UC1586868  Phacelia bolanderi Juha Pykala and D. H. Norris 1987-6-10 1510 Humboldt on a road to Onion Lake about 18 mi from Highway 96; Six Rivers National Forest Comment
  HSC30745  Phacelia corymbosa D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5621 Humboldt Mt. Lassic and two smaller peaks to immediate E 1768 Comment
  RSA249336  Phacelia corymbosa D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5621 Humboldt Mount Lassic and 2 smaller peaks to immediate east. 1768 Comment
  HSC96239  Phacelia heterophylla subsp. virgata Sara March, Gillian Levy 2005-6-8 1 Humboldt 1.7 mi. south of Hwy. 299 on Titlow Hill Rd. 980 Comment
  UC1222899  Phacelia mutabilis Joseph P. Tracy 1951-6-26 19564 Humboldt Snow Camp 1402 Comment
  UC162721  Phacelia nemoralis subsp. oregonensis Joseph P. Tracy 1911-7-5 3317 Humboldt Willow Creek (tributary of Trinity River) Northern Coast Ranges (near its mouth) 304 Comment
  CAS-BOT-BC258864  Phalaris aquatica Henry M. Pollard 1947-9-1 s.n. Humboldt Field near Perch Creek, Orleans region Comment
  RSA167286  Phalaris californica Joseph P. Tracy 1951-6-26 19599 Humboldt on Butter Valley Road, about 2 miles east of junction of Kneeland Prairie Road Comment
  HSC48325  Philadelphus californicus Maralyn O'Meara 1974-7-17 549 Humboldt Along Kneeland rd. across from Kneeland Post Office Comment
  CAS-BOT-BC76556  Philadelphus lewisii W. R. Dudley 1899-6-21 s.n. Humboldt Near Eel River below Dyerville Comment
  CAS-BOT-BC76569  Philadelphus lewisii L. R. Abrams 1916-7-11 6006 Humboldt Between Blocksberg and Bridgeville Comment
  JEPS49601  Philadelphus lewisii W. L. Jepson 1902-7-1 1964 Humboldt Hupa Road Redwood Creek Comment
  UC615281  Philadelphus lewisii Beryl O. Schreiber 1932-7-12 372 Humboldt near Klamath Comment
  RSA0046935  Philadelphus lewisii Joseph P. Tracy 1926-6-27 7696 Humboldt Horse Mountain. 1067 Comment
  UC962098  Phleum alpinum Joseph P. Tracy 1934-7-2 13294 Humboldt Trinidad 3 Comment
  CAS-BOT-BC250881  Phleum pratense Doris K. Kildale 1928-6-24 7064 Humboldt Redwood Creek at Berry's Comment
  UC34068  Phleum pratense J. P. Tracy 1900-7-12 896 Humboldt immediate vicinity Eureka 0 Comment
  HSC64189  Phlox adsurgens J. O. Sawyer, M. A. Ericksen 1979-6-23 3379 Humboldt Slopes below Mill Creek Lakes 1585 Comment
  HSC65479  Phlox adsurgens M. A. Baker 1980-6-7 1806 Humboldt Near Brush Mtn. 1128 Comment
  HSC17184  Phlox adsurgens Milo S. Baker Humboldt 15 mi. E of Hoopa at end of Forest Rd. 1372 Comment
  SEINET12279173  Phlox adsurgens H. P. Chandler 1901-1 1534 Humboldt Klamath River 427 Comment
  JEPS71114  Phlox gracilis Joseph P. Tracy 1935-7-23 14146 Humboldt Corral Prairie Trinity Summit 1584 Comment
  UC1198559  Phlox gracilis Joseph P. Tracy 1932-4-24 9824 Humboldt between Miranda and Redway; North Coast Ranges, South Fork of Eel River 91 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
  CAS-BOT-BC452023  Phyllospadix torreyi H. E. Parks 1933-11-12 s.n. Humboldt Spruce Cove, Trinidad Comment
  UC535001  Phyllospadix torreyi H. E. Parks 1933-11-12 Humboldt Spruce Cove Trinidad Comment
  UC1103511  Phyllospadix torreyi Joseph P. Tracy 1917-5-30 4812 Humboldt ocean beach opposite Dows Prairie (probably derived from rocky shores n of Little River); Northern Coast Ranges Comment
  SEINET3882874  Physaria kingii subsp. cobrensis C. Reed, Kathryn W. Rollins 1981-6-6 81229 Humboldt 8a, Charles Sheldon Wildlife Refuge, 43 miles northeast of Cedarville.; 0 Comment
  RSA46805  Physocarpus capitatus Doris K. Kildale 1927-5-15 3158 Humboldt Petrolia Comment
  UC1198698  Physocarpus capitatus Joseph P. Tracy 1912-7-4 3721 Humboldt near Hydesville 60 Comment
  HSC72978  Picea breweriana M. A. Baker 1980-7-23 3188 Humboldt Near Orleans Mtn. 1859 Comment
  HSC31517  Pinus contorta Steve Selva, Roger Jensen 1974-8-28 92 Humboldt Approx. 5 mi. S of Arcata on the Samoa Peninsula Comment
  HSC54523  Pinus jeffreyi Overton, Butler 1979-7-23 9455 Humboldt Near Horse Mountain Mine, close to the town of Willow Creek 1295 Comment
  HSC74337  Pinus lambertiana M. A. Baker 1980-5-18 1280 Humboldt Near Black Mtn. 1006 Comment
  CAS-BOT-BC79029  Pinus ponderosa Carl D. Duncan 1920-9-22 s.n. Humboldt Hoopa Valley Comment
  CAS-BOT-BC79030  Pinus ponderosa Doris K. Kildale 1927-12-1 4199 Humboldt Klamath River at Orleans Comment
  HSC98866  Pinus ponderosa var. ponderosa Cara Witte 2008-7-1 787 Humboldt Near Grouse Mountain. Along Forest Service Road 4N32. Approximately .5 mile south of intersection with 5N04 and 4N32E. 1406 Comment
  UC63995  Pinus sabiniana Mrs. M. H. Manning Apr 1 1902-May 1 1902 Humboldt Hupa Comment
  UC1196427  Piperia elongata Joseph P. Tracy 1918-9-1 5098 Humboldt Eureka, at the Stephen Hill place Northern Coast Ranges Comment
  UC13529  Piperia unalascensis Chesnut and Drew 1888-7-19 Humboldt Pilot Ridge Comment
  UC1196411  Piperia unalascensis Joseph P. Tracy 1913-6-26 4346 Humboldt opposite Buck Mountain ( Dinesmore's Ranch); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  HSC65967  Pityopus californicus M. A. Baker 1980-7-20 3043 Humboldt Near Bell Swamps 11 Comment
  UC1197758  Pityopus californicus Joseph P. Tracy 1925-7-5 7184 Humboldt High Prairie on Bald Mountain North Coast Ranges 1066 Comment
  CAS-BOT-BC227992  Plagiobothrys Doris Kildale Gillespie 1931-6-7 10647 Humboldt South Fork Mountain, Blake Lookout 1726 Comment
  UC1186480  Plagiobothrys bracteatus John H. Weiler and A. P. Nelson 1960-6-28 60250 Humboldt vernal pool on floodplain of river 3.6 mi w Humboldt-Trinity County line; Van Duzen River Comment
  SEINET3152905  Plagiobothrys nothofulvus N. Dennis 1965-6-11 114 Humboldt About 1/4 miles S and 1 mile E of the juction of Berry Ridge Road and the Eureka-Bridgeville county road, along Ashfield Ridge Road. About 5 miles SE of Kneeland. 792 Comment
  UC526811  Plagiobothrys nothofulvus Joseph P. Tracy 1932-5-1 9862 Humboldt near Garberville; North Coast Ranges, Redway 182 Comment
  HSC23128  Plagiobothrys nothofulvus Norman Dennis 1965-6-11 114 Humboldt 1/4 mi. S and 1 mi. E of the junction of Barry Ridge Rd. and the Eureka-Bridgeville county road, along Ashfield Ridge Rd. About 5 mi. SE of Kneeland 793 Comment
  JEPS68107  Plagiobothrys nothofulvus Lincoln Constance 1934-5-23 617 Humboldt above Look Prairie; Bull Creek Region, South Fork Eel River 365 Comment
  SD29277  Plagiobothrys nothofulvus Lincoln Constance 1934-5-23 617 Humboldt South Fork Eel River; southeast slope of mountain above Look Prairie. 366 Comment
  UC582611  Plagiobothrys reticulatus Joseph P. Tracy 1936-6-5 14857 Humboldt 6 mi se Arcata (Fickle Hill); Fickle Hill 609 Comment
  UC1239615  Plagiobothrys tenellus Joseph P. Tracy 1933-5-18 12190 Humboldt near Blue Lake (on gravel bar); Northern Coast Region, Mad River 15 Comment
  BLMAR625  Plantago coronopus Jennifer Wheeler 2011-6-7 625 Humboldt South Spit, Overflow parking area near interpretive kiosk 3 Comment
  UCD124424  Plantago erecta Linda M. Barker 1976-4-30 1397 Humboldt Lanphere-Christensen Dunes, 3 miles west of Arcata. Comment
  POM61312  Plantago hirtella var. galeottiana Joseph P. Tracy 1906-6-17 2493 Humboldt Immediate vicinity of Eureka. 0 Comment
  SEINET12330007  Plantago hirtella var. galeottiana F. H. Utech 1986-1 86 -409 Humboldt Cape Mendocino, along Pacific Ocean 6 Comment
  HSC62684  Plantago lanceolata Michelle Stevens 1979-4-21 58 Humboldt Ponds across from Clam Beach 0 Comment
  HSC89612  Plantago lanceolata M. Roantree 1985-5-24 61 Humboldt E side of Trinidad Head Comment
  HSC37954  Plantago maritima Peter Sorensen 1976-6-2 Humboldt Woodley Island Comment
  HSC83041  Plantago maritima A. L. Eicher 1985-6-16 Humboldt SW side of the mouth of Mad River Slough 1 Comment
  JEPS6471  Plantago subnuda Rimo Bacigalupi and G. T. Robbins 1954-8-10 4760 Humboldt 0.4 mi s south boundary marker for Dry Lagoon Beach (along U.S. Highway 101); Dry Lagoon Beach Comment
  HSC34285  Platanthera dilatata var. leucostachys Ken Irwin 1975-8-16 Humboldt Grogans Hole Area Comment
  HSC70989  Platanthera sparsiflora Gail Newton 1980-7-20 1648 Humboldt Near Bell Swamps 1426 Comment
  HSC59196  Platystemon californicus Terry Roth 1979-5-24 80 Humboldt Samoa Dunes near the U.S. Coast Guard Station 5 Comment
  UC1196295  Platystemon californicus Joseph P. Tracy 1935-5-25 13871 Humboldt Fort Seward 106 Comment
  JEPS51579  Platystemon californicus W. L. Jepson 1902-6-20 1902 Humboldt Ft. Seward Ranch Ridge 1219 Comment
  SFV18500  Platystemon californicus A. M. Deshais 2002-4-12 36 Humboldt Manila Dunes. 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
  UC168998  Plectritis brachystemon Joseph P. Tracy 1905-4-30 2176 Humboldt Ocean Beach at Humboldt Bay Ocean Beach; Northern Coast Region, Humboldt Bay, Ocean Beach Comment
  UC602508  Plectritis brachystemon Joseph P. Tracy 1933-5-20 12250 Humboldt Northern Coast Ranges, Mattole Valley Mattole Valley; Northern Coast Ranges, Mattole Valley 60 Comment
  UC1239596  Plectritis congesta Joseph P. Tracy 1935-6-23 13974 Humboldt French Camp Ridge 1066 Comment
  HSC59394  Plectritis congesta Rick Lundquist 1979-4-27 49 Humboldt N Spit, across from Samoa boat ramp N of U.S. Coast Guard Station. 0 Comment
  HSC92237  Plectritis congesta subsp. brachystemon John Cromwell, Julie Schneider, A. Thoele 1994-3-19 6 Humboldt Hell's Half Acre, trailhead located 12 mi. S on S Fork Rd. off Hwy. 299 457 Comment
  POM252663  Plectritis congesta subsp. brachystemon Joseph P. Tracy 1936-5-29 14823 .5 Humboldt French Camp Ridge. 1067 Comment
  CAS-BOT-BC458163  Pleuricospora fimbriolata Doris K. Kildale 1927-7-10 3744 Humboldt Gans Prairie Woods - Bald Hills Road Comment
  JEPS109805  Pleuropogon refractus Dean W. Taylor 2004-6-24 19141 Humboldt head of Madden Creek, Ammon Ridge, seepage area along logging spur road arterial to Forest Road 5N81 1432 Comment
  UC1103801  Pleuropogon refractus Joseph P. Tracy 1911-6-4 3234 Humboldt along Little River, 5 mi from the coast Little River; Northern Coast Region, Little River 121 Comment
  UCD90104  Pleuropogon refractus R. Tofsrud 1949-7-22 s.n. Humboldt on road between Scotia and Capetown. Comment
  UC525632  Poa compressa Joseph P. Tracy 1927-7-3 8224 Humboldt Fieldbrook 60 Comment
  UC1145115  Poa douglasii Joseph P. Tracy 1947-7-3 17766 Humboldt mouth of Little River 6 Comment
  UC1146601  Poa douglasii Freed W. Hoffman 1946-5-21 1719 Humboldt sand dunes near Eel River Comment
  SEINET10659238  Poa douglasii Huron H. Smith 1911-1 Smith 3852 Humboldt Comment
  HSC10722  Poa kelloggii E. W. Styskel 1963-4-20 17 Humboldt 3 mi. SE of Korbel, on Snow Camp Rd. 305 Comment
  SEINET10855127  Poa kelloggii Joseph P. Tracy 1911-6-4 Tracy 3219 Humboldt Along Little River Humboldt County 5 miles from the coast. Comment
  BLMAR301  Poa macrantha Jennifer Anthony-Wheeler 2002-6-15 301 Humboldt South Spit 6 Comment
  RSA92307  Poa macrantha Joseph P. Tracy 1933-5-20 12224 Humboldt Cape Mendocino, near ocean shore, south point of the Cape. 3 Comment
  UC1132739  Poa pratensis subsp. pratensis H. L. Person 1932-5-11 Humboldt Arcata; Eureka Quadrangle Comment
  SEINET200627 Image available Poa scabrella Joseph P. Tracy 1912-7-31 395 Humboldt Buck Mountain,near the summit Comment
  UCD90446  Poa secunda R. Tofsrud 1948-9-1 s.n. Humboldt Road junction near summit of Horse Mt. 1463 Comment
  UC1103169  Poa secunda subsp. secunda Joseph P. Tracy 1921-4-24 5465 Humboldt facing S Fork of Eel River Phillipsville; Northern Coast Ranges 121 Comment
  UC180501  Poa secunda subsp. secunda Joseph P. Tracy 1913-6-14 4121 Humboldt opposite Buck Mt (Dinsmore's Ranch); Northern Coast Ranges, valley of Van Duzen River 762 Comment
  UC184914  Poa secunda subsp. secunda Joseph P. Tracy 1912-7-31 3952 Humboldt near summit Buck Mt; Northern Coast Ranges 1676 Comment
  RSA129472  Poa trivialis H. L. Person 1932-5-11 s.n. Humboldt Near Arcata 0 Comment
  UCD92123  Poa unilateralis A. A. Beetle 1940-5-19 3612 Humboldt near H.E. Parks Reservoir, California coast. Comment
  UC1988934  Pogogyne zizyphoroides J. P. Tracy 1938-7-5 16005 Humboldt 45 Comment
  CAS-BOT-BC232887  Polemonium carneum Carl B. Wolf 1937-6-17 8881 Humboldt Big Lagoon, S side at W of Redwood Highway 6 Comment
  HSC35200  Polycarpon tetraphyllum Thomas W. Nelson 1975-11-3 2039 Humboldt 7th and H Sts., Eureka Comment
  UC183759  Polygala californica Joseph P. Tracy 1912-6-9 3667 Humboldt Alton Northern Coast Region, Alton 30 Comment
  JEPS43006  Polygala californica W. L. Jepson 1934-5-7 16704 Humboldt in woods at border Buckeye Prairie; Bull Creek Comment
  HSC99087  Polygala cornuta var. cornuta Cara Witte 2008-7-25 927 Humboldt Horse Mountain Botanical Area. At intersection of 6N36B and Forest Service Road 6N36A. 1355 Comment
  UC249655  Polygonum amphibium var. emersum Joseph P. Tracy 1922-9-3 6115 Humboldt Bluff Creek Northern Coast Ranges, Klamath River 91 Comment
  HSC17467  Polygonum aviculare P. W. Shields 1955-6-18 Humboldt HSC Campus Comment
  HSC17470  Polygonum aviculare P. W. Shields 1955-6-18 Humboldt HSC Campus Comment
  HSC55083  Polygonum douglasii G. L. Clifton, Griswold 1979-7-31 11747 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa. 1845 Comment
  UC177188  Polygonum lapathifolium Joseph P. Tracy 1912-10-20 3988 Humboldt in field by Loleta Pond; Northern Coast Ranges, lower Eel River Valley 15 Comment
  HSC74386  Polygonum polygaloides subsp. kelloggii M. A. Baker 1980-6-28 2504 Humboldt Near Mad River Buttes 1445 Comment
  UC203953  Polygonum polystachyum Joseph P. Tracy 1918-9-1 5096 Humboldt Newells Camp Northern Coast Ranges (on Kneeland Road) 457 Comment
  HSC98905  Polygonum spergulariiforme Cara Witte 2007-7-9 463 Humboldt Grouse Mountain Lookout. Forest Service Road 4N70. 1641 Comment
  UC709395  Polypodium Joseph P. Tracy 1941-3-26 16835 Humboldt at Willow Creek Willow Creek; Trinity River Valley 152 Comment
  HSC1137  Polypodium glycyrrhiza J. W. Johnson 1962-4-2 1421 Humboldt Lanphere lane, near the swamp, Samoa Peninsula, Arcata Comment
  UC197920  Polypodium glycyrrhiza Joseph P. Tracy 1914-6-7 4490 Humboldt N. Fork Eel River; Northern Coast Region 0 Comment
  UC375480  Polypodium scouleri Harley P. Chandler May, 1901 1137 Humboldt Humboldt Bay; North Coast Ranges 3 Comment
  HSC100916  Polypodium scouleri Carl C. Marshall Sep 1886 42 Humboldt Canyon E of Arcata. Comment
  HSC1112  Polypodium scouleri D. E. Anderson 1962-2-10 1918 Humboldt Old Hwy. 101, S of Trinidad Comment
  HSC1125  Polypodium scouleri R. J. Vernimen 1963-2-17 10 Humboldt Clam Beach Lagoons Comment
  CAS-BOT-BC233073  Polypogon interruptus Joseph P. Tracy 1927-7-16 8259 Humboldt Eureka 60 Comment
  HSC38498  Polypogon monspeliensis R. Sutherland 1976-11-9 1 Humboldt Redwood Creek, Wittemore Grove. 82 Comment
  HSC93265  Polystichum munitum Gordon Leppig 1998-3-11 716 Humboldt Redwood Park, near Jolly Giant Cr. 91 Comment
  UC249849  Polystichum munitum Joseph P. Tracy 1924-8-24 6828 Humboldt E Fork Willow Creek; Northern Coast Ranges 457 Comment
  JEPS64534  Populus Joseph P. Tracy 1939-4-18 16211 Humboldt on South Fork of Eel River between Miranda and Redway (at Sylvandale); North Coast Ranges, South Fork of Eel River 91 Comment
  CAS-BOT-BC102911  Populus trichocarpa Doris K. Kildale 1926-11-13 2853 Humboldt mouth of Lindsey Creek - Lower Mad River Comment
  UC1196662  Populus trichocarpa Joseph P. Tracy 1932-5-11 9970 Humboldt 2 mi n Samoa; North Coast Ranges 6 Comment
  UC1099846  Potamogeton natans Malcolm A. Nobs, S. Galen Smith 1949-8-9 1229 Humboldt 1 mi n of Arcata (at junction of Highways 101 and 299); Mad River Valley Comment
  HSC18731  Potentilla anserina subsp. pacifica W. A. Heaton 1965-5-17 3 Humboldt 1/2 mi. N of Trinidad on trail near beach Comment
  HSC36106  Potentilla anserina subsp. pacifica Otis Weimer 1973-10-16 731010 .5 Humboldt On Lindsay Creek Marsh 4 mi. N of Hwy. 299 on Fieldbrook Rd. Comment
  UC1191497  Potentilla anserina subsp. pacifica Malcolm A. Nobs, S. Galen Smith 1949-8-3 1161 Humboldt 1 mi s Fields Landing; Eel River Valley, s of Fields Landing Comment
  HSC102525  Potentilla drummondii M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-28 1512 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1106 Comment
  HSC56374  Potentilla gracilis var. fastigiata Griswold, Butler 1979-7-11 6398 Humboldt Near Snow Camp Mtn., close to the town of Willow Creek. 1320 Comment
  CAS-BOT-BC540160  Potentilla gracilis var. fastigiata Doris K. Kildale 1925-8-17 1232 Humboldt Trinity Summit - Waterdog Lake 1828 Comment
  CAS-BOT-BC158496  Potentilla gracilis var. gracilis Doris K. Kildale 1926-6-27 2210 Humboldt Laribee Valley 701 Comment
  HSC99485  Potentilla gracilis var. gracilis K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-14 144 Humboldt Near North Trinity Mtn, 11. 9 mi east of Hoopa on Big Hill Rd (8N01), at Box Camp, Six Rivers National Forest. 1372 Comment
  CAS-BOT-BC517501  Prosartes smithii Volney Rattan 1883-6-4 s.n. Humboldt 3 mi. E Eureka Comment
  SEINET12050369  Prosartes smithii F. H. Utech 1988-1 88 -284 Humboldt along CA 36 from Bridgeville enroute to Dinsmore Mile Marker 42.00, above Van Duzen River 800 Comment
  HSC23126  Prunella vulgaris A. D. Maxfield 1967-7-12 2 Humboldt 400 yds. SW of Strawberry Creek and Dows Prairie Rd., McKinleyville 91 Comment
  HSC26841  Prunella vulgaris Thomas W. Nelson 1971-1-8 321 Humboldt Ferndale next to Co. Fair Grounds Comment
  UC1174866  Prunella vulgaris var. lanceolata P. C. Everett and E. K. Balls 1959-10-25 23961 Humboldt U.S. Hwy 299 to Arcata 14 mi w Willow Creek; w of Willow Creek 502 Comment
  HSC58063  Prunus emarginata G. L. Clifton, Griswold 1979-8-1 11940 Humboldt Near Mill Creek Lakes, close to the town of Hoopa. 1692 Comment
  JEPS44945  Prunus emarginata Joseph P. Tracy 1924-5-25 6685 Humboldt on Big Lagoon Prairie, Big Lagoon Big Lagoon Prairie; Northern Coast Region, Big Lagoon, Big Lagoon Prairie 6 Comment
  RSA254750  Prunus emarginata D. E. Anderson 1972-6-13 5572 Humboldt Westward lower slopes of Black Lassic near Trinity County line. 1585 Comment
  UC666846  Prunus emarginata Joseph P. Tracy 1937-7-29 15594 Humboldt South Fork Mountain, near top at Hyampom Trail South Fork Mountain; , Hyampom Trail 1676 Comment
  UC14175  Prunus virginiana var. demissa W. C. Blasdale 1896-6-8 Humboldt Mad River Comment
  SD39794  Pseudognaphalium stramineum Edith A. Purer 1932-7-27 4128 Humboldt Samoa Comment
  HSC99550  Pseudotsuga menziesii K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-8-10 215 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  UC502911  Pseudotsuga menziesii Joseph P. Tracy Jul 16 1930-Jul 19 1930 8960 Humboldt near McKay Camp; South Fork Mountain 1676 Comment
  HSC76288  Pseudotsuga menziesii var. menziesii Denis Kearns 1981-7-6 56 Humboldt Near Mosquito Lake 1122 Comment
  RSA170252  Psilocarphus brevissimus Joseph P. Tracy, Francis W. Pennell 1940-7-7 16674 Humboldt Grouse Mountain. 1555 Comment
  UC169085  Psilocarphus tenellus Joseph P. Tracy and Ernest B. Babcock 1912-5-11 3592 Humboldt near Hydesville; Northern Coast Region 30 Comment
  UC582502  Psilocarphus tenellus Joseph P. Tracy 1937-6-20 15339 Humboldt 10.0 mi up stream mouth of Bear River; Bear River 152 Comment
  UC165835  Psilocarphus tenellus Joseph P. Tracy 1911-7-5 3330 Humboldt near mouth of Willow Creek; Northern Coast Ranges, Valley of the Trinity River 152 Comment
  RSA275352  Pteridium aquilinum var. pubescens J. P. Smith, Steve Selva 1970-6-14 3855 Humboldt Along Calif. 96 at Whitmore Creek. 152 Comment
  UCD136174  Pteridium aquilinum var. pubescens K. Esau 1934-5-8 s.n. Humboldt Above Fort Seward. 457 Comment
  UC642278  Pteryxia terebinthina var. californica Joseph P. Tracy 1929-6-3 8600 Humboldt Trinity Rivery Valley, at Willow Creek 152 Comment
  CAS-BOT-BC460603  Pyrola aphylla Doris K. Kildale 1926-6-17 2166 Humboldt Kneeland Prairie 762 Comment
  UCD117813  Pyrola aphylla K. Esau 1934-5-7 s.n. Humboldt Above Fort Seward. 609 Comment
  UC153970  Pyrola asarifolia J. P. Tracy 1901-6-30 1191 Humboldt Immediate Vicinity of Eureka 0 Comment
  CAS-BOT-BC462869  Pyrola asarifolia Volney Rattan 1878-1-1 s.n. Humboldt Unspecified Comment
  HSC54854  Pyrola picta G. L. Clifton 1979-7-25 10741 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1814 Comment
  NY42917  Pyrus malus J. B. Walker 1995-4-26 1386 Humboldt Six Rivers National Forest, Hwy 36, 2km W of Cobbs 800 Comment
  UC1196363  Quercus X morehus Joseph P. Tracy 1916-6-19 4723 Humboldt North Fork of Dobbyn Creek Northern Coast Ranges 182 Comment
  CAS-BOT-BC62675  Quercus chrysolepis Doris K. Kildale 1926-5-16 1842 Humboldt Horse Mt. road 792 Comment
  HSC41342  Quercus chrysolepis Brad Klipfel 1974-8-2 504 Humboldt Horse Mtn. Comment
  POM270213  Quercus chrysolepis Lyman Benson 1928-7-14 519 Humboldt Richardon's Grove of Redwoods, Redwood Highway, south county boundary, Middle N Coast Mt. Range, South Fork of Eel River. 122 Comment
  SBBG117224  Quercus chrysolepis R. G. Myatt 1971-9-21 1185 Humboldt near Orleans, NE of Hoopa Reservation, along Klamath River 185 Comment
  UC275588  Quercus chrysolepis Joseph P. Tracy 1924-8-31 6845 Humboldt Klamath River at Bluff Creek Northern Coast Ranges 91 Comment
  UC54678  Quercus chrysolepis Harley P. Chandler Jun 1901 1435 Humboldt Klamath River North Coast Ranges 304 Comment
  UC5545  Quercus chrysolepis unknown 1867-6-17 Humboldt Elk Ridge Comment
  HSC43854  Quercus garryana Maralyn O'Meara 1974-7-17 550 Humboldt Kneeland Comment
  CAS-BOT-BC62785  Quercus garryana var. breweri Mrs. G. Earle Kelly 1924-6-1 s.n. Humboldt Kneeland Prairie Comment
  HSC98850  Quercus garryana var. garryana Cara Witte 2008-9-13 1037 Humboldt Forest Service Road 4N06. 1/4 mile east of intersection with National Forest 1. Cow Creek Ridge. 1283 Comment
  UCD46112  Quercus garryana var. garryana Joseph P. Tracy 1924-10-12 6915 1/2 Humboldt Trinity River Valley, near the South Fork. 182 Comment
  UCD46120  Quercus garryana var. garryana John M. Tucker 1948-9-3 1849 Humboldt California, Humboldt Co.; southwest side of Horse Mountain, ca. 2 mi. south of Berry's Summit; Comment
  HSC98723  Quercus kelloggii Cara Witte 2008-7-11 885 Humboldt Grouse Mountain Lookout. Forest Service Road 4N70. 1641 Comment
  CAS-BOT-BC104336  Quercus sadleriana Milo S. Baker 1947-8-10 11896 Humboldt 16 mi NE of Hoopa along trail to Trinity Summit from end of forest road 1463 Comment
  UC1196513  Quercus sadleriana Joseph P. Tracy 1932-7-15 10579 Humboldt near Corral Prairie; Klamath Mountains 1524 Comment
  CAS-BOT-BC104535  Quercus vacciniifolia Carl B. Wolf 1927-8-28 1173 Humboldt On grade 9 mi from Willow Creek, Lord Ellis Road to Blue Lake Comment
  UC1196539  Quercus vacciniifolia Joseph P. Tracy 1932-7-18 10721 Humboldt Head of Brett Hole Klamath Mountains, Trinity Summit 1828 Comment
  SEINET3825263 Image available Quercus wislizeni Joseph P. Tracy 1914-5-14 4458 Humboldt Fort Seward Comment
  UC1196505  Quercus wislizeni Joseph P. Tracy 1925-8-23 7246 Humboldt North Dobbyn Creek Northern Coast Ranges 152 Comment
  UC1103003  Ranunculus aquatilis var. capillaceus Joseph P. Tracy 1913-3-9 4024 Humboldt Alton Northern Coast Region (ditch by roadside) 30 Comment
  UC1103004  Ranunculus aquatilis var. hispidulus Joseph P. Tracy 1939-5-14 16293 Humboldt near Dinsmore's (pond along river); Van Duzen River 746 Comment
  HSC18144  Ranunculus californicus var. californicus T. M. Mingo May 1965 Humboldt W of Fairhaven Dr. intersection with Hwy. 101 Comment
  UC1103012  Ranunculus flammula Joseph P. Tracy 1936-6-28 15023 Humboldt Lake Prairie Bald Mountain 1066 Comment
  RSA85287  Ranunculus flammula var. ovalis F. W. Peirson 1923-7-11 3726 Humboldt 7 miles N of Arcata. Comment
  POM269622  Ranunculus flammula var. ovalis Joseph P. Tracy 1934-7-13 13390 Humboldt Dow's Prairie Comment
  UC1196268  Ranunculus muricatus Joseph P. Tracy 1914-6-7 4495 Humboldt Falk Northern Coast Region, region about Humboldt, South Fork of (roadside) 0 Comment
  HSC18155  Ranunculus muricatus S. J. Roberts 1965-4-25 32 Humboldt 0.25 mi. E of Lanphere's bridge across old Mad River channel Comment
  UC1196220  Ranunculus occidentalis Joseph P. Tracy 1908-6 2688 1/2 Humboldt opposite Buck Mountain; Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  UC1196228  Ranunculus occidentalis Joseph P. Tracy 1933-7-11 12666 Humboldt Horse Mountain Northern Coast Ranges 1402 Comment
  RSA523409  Ranunculus occidentalis G. H. True 1936-5-11 466 Humboldt E slope of Elk Ridge, 12 miles W of Miranda. 457 Comment
  HSC76583  Ranunculus occidentalis var. occidentalis Denis Kearns 1981-7-23 408 Humboldt Near Whiteys Peak. 1524 Comment
  RSA20857  Ranunculus orthorhynchus var. platyphyllus Carl B. Wolf 1937-6-18 8897 Humboldt 1/2 miles E of Alton. 21 Comment
  POM118708  Ranunculus repens Marcus E. Jones 1924-4-26 s.n. Humboldt Eureka. Comment
  HSC56212  Ranunculus uncinatus G. L. Clifton, Griswold 1979-8-2 12220 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  CAS-BOT-BC74183  Raphanus raphanistrum Ashley C. Browne 1936-6-11 s.n. Humboldt Patrick's Point State Park. Comment
  HSC38347  Raphanus raphanistrum Peter Sorensen 1976-6-14 Humboldt N Spit of Humboldt Bay Comment
  RSA601956  Rhamnus californica Carl B. Wolf 1934-6-30 5842 Humboldt Back of Shelter cove. 61 Comment
  UC1197984  Rhamnus purshiana J. P. Tracy 1901-8-11 1276 Humboldt immediate vicinity Eureka 0 Comment
  UC1197996  Rhamnus purshiana Mary Harriet Tracy 1946-5-30 Humboldt 5 mi e Carlotta; Van Duzen River, Riverside Park 30 Comment
  CAS-BOT-BC56614  Rhododendron macrophyllum Ella Dales Cantelow 1936-5-17 1235 Humboldt 9 mi. e. of Orick Comment
  UCD67631  Rhododendron macrophyllum D. Sanchez-Mata 1996-6-27 s.n. Humboldt Blue Lake. Mad River. 175 Comment
  JEPS58767  Rhododendron occidentale Joseph P. Tracy 1926-6-27 7663 Humboldt Horse Mountain; Northern Coast Ranges, Horse Mountain 1463 Comment
  OBI33909  Rhododendron occidentale David J. Keil 1983-7-2 17313 Humboldt Ca. 4 mi SE of SR 299 along Titlow Hill rd below Horse Mountain Summit rd Comment
  SBBG5558  Rhododendron occidentale M. J. Cody 1938-7-14 Humboldt 2 mi N of Trinidad Comment
  UC562737  Rhododendron occidentale Joseph P. Tracy 1929-7-4 8609 Humboldt French Camp Ridge 1066 Comment
  CAS-BOT-BC200388  Rhododendron occidentale var. paludosum Doris K. Kildale 1927-6-26 3589 Humboldt Patrick's [Patricks] Point Comment
  RSA0063214  Rhododendron occidentale var. paludosum R. F. Thorne, Percy C. Everett 1965-8-7 35189 Humboldt Big Lagoon; at edge of bog at south end of lagoon. 2 Comment
  UCD116925  Rhus aromatica M. Wiesendanger 1928-4-7 931 Humboldt Near Blue Lakes. Comment
  CAS-BOT-BC92521  Ribes binominatum Joseph P. Tracy 1932-7-13 10487 Humboldt Klamath Mountains. Trinity Summit. Near Corral Prairie. 1524 Comment
  HSC103228  Ribes binominatum Jade Paget-Seekins 2010-6-13 19 Humboldt Groves Prairie. From the campsite next to the prairie walk almost to the end of the prairie, turn right, walk down the slope towards the creek. 1254 Comment
  RSA167293  Ribes binominatum Joseph P. Tracy 1950-7-1 18949 Humboldt Grouse Mountain; at Cold Springs . 1433 Comment
  RSA459475  Ribes binominatum Thomas W. Nelson, Jane Nelson 1976-7-26 3040 Humboldt Along ridge NW of Mount Lassic (Signal Peak) 1707 Comment
  UC154115  Ribes bracteosum Joseph P. Tracy June 1904 2104 Humboldt near Falk's Mill (on Elk River); Northern Coast Region, Humboldt Bay 0 Comment
  UCR139068  Ribes bracteosum E. Brower, S. Marubayashi, E. Perry 1997-5-10 055 Humboldt Intersection of Hwy 299 and Redwood Hwy 12 Comment
  UC1225766  Ribes divaricatum var. pubiflorum Joseph P. Tracy 1941-3-26 16813 Humboldt opposite mouth Willow Creek (Lack Pond); Trinity River Valley 152 Comment
  SEINET3121266 Image available Ribes divaricatum var. pubiflorum Joseph P. Tracy 1945-5-10 17507 Humboldt Rick's Prairie 46 Comment
  UC492207  Ribes lacustre Joseph P. Tracy Jul 16 1930-Jul 19 1930 9078 Humboldt near McKay Camp; Northern Coast Ranges, South Fork Mountain 1676 Comment
  HSC70324  Ribes lobbii M. A. Baker 1980-6-8 1879 Humboldt Near Buck Flat. 1554 Comment
  CAS-BOT-BC173366  Ribes lobbii Volney Rattan 1882-6-1 s.n. Humboldt Coast Mts. North of San Francisco Bay Comment
  UC1198936  Ribes marshallii Joseph P. Tracy 1942-6-23 17261 Humboldt open ridges near Water-dog Lakes; Trinity Summit 1828 Comment
  CAS-BOT-BC206036  Ribes menziesii Joseph P. Tracy 1948-2-22 17950 Humboldt Hydesville 91 Comment
  CAS-BOT-BC206042  Ribes menziesii A. A. Heller 1924-7-24 s.n. Humboldt Near Humboldt County camp on the redwood highway 7 miles south of Trinidad Comment
  HSC100493  Ribes menziesii Carl C. Marshall Apr 1886 134 Humboldt Everywhere about the bay. Comment
  UC902108  Ribes menziesii Joseph P. Tracy 1948-3-6 17953 Humboldt Trinidad 60 Comment
  RSA0021772  Ribes menziesii Doris K. Kildale 1927-6-25 3570 Humboldt Shelter Cove. Comment
  HSC20325  Ribes roezlii J. Sandborg, F. Sandborg 1968-7-19 56 Humboldt Bluff Creek near Notice Creek 793 Comment
  UC902057  Ribes roezlii Joseph P. Tracy 1942-3-8 17066 Humboldt Miranda South Fork of Eel River 121 Comment
  RSA0024753  Ribes roezlii D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5594 Humboldt Mount Lassic and 2 smaller peaks to immediate east. 1768 Comment
  JEPS49463  Ribes roezlii var. cruentum Joseph P. Tracy 1922-4-30 6041 Humboldt Three Creek 670 Comment
  UC902081  Ribes roezlii var. cruentum Joseph P. Tracy 1949-7-19 18378 Humboldt Grouse Mountain 1280 Comment
  HSC100494  Ribes sanguineum Carl C. Marshall Apr 1885 135 Humboldt Near the coast everywhere. Comment
  HSC20340  Ribes sanguineum S. J. Hawks 1965-5-6 19 Humboldt Clam Beach County Park Comment
  HSC31648  Ribes sanguineum Timothy B. Devine 1974-5-4 313 Humboldt Junction of Hwy. 299 and Titlow Hill Rd., E facing slope 875 Comment
  HSC79518  Ribes sanguineum var. glutinosum Kenneth Clark 1980-3-1 520 Humboldt Lower and middle terraces of Dead Man's Gulch 37 Comment
  HSC76261  Ribes viscosissimum Teresa Prendusi 1981-7-21 276 Humboldt Near Whiteys Peak 1646 Comment
  HSC26800  Romanzoffia californica Thomas W. Nelson 1971-4-24 404 Humboldt Willow Creek Comment
  HSC69840  Romanzoffia californica R. Kalal 1979-5-6 52 Humboldt Trinidad Head 30 Comment
  HSC73175  Romanzoffia californica M. A. Baker 1980-5-17 1250 Humboldt Near Le Perron Peak 1066 Comment
  HSC12697  Rorippa curvisiliqua Jana Kattenhorn 1970-10-28 146 Humboldt Mad River at the mouth of Lindsey Creek, N Bank Rd. off Hwy. 299 Comment
  HSC6899  Rorippa curvisiliqua D. E. Anderson 1961-9-30 1844 Humboldt Divide Lake Comment
  UC183576  Rorippa nasturtium-aquaticum Joseph P. Tracy 1912-7-4 3732 Humboldt near Hydesville; Northern Coast Region, near Hydesville 60 Comment
  CAS-BOT-BC410928  Rorippa palustris subsp. hispida Henry M. Pollard 1945-8-28 s.n. Humboldt Near Harley Place; near Orleans Comment
  CAS-BOT-BC146528  Rosa gymnocarpa M. S. Jussel 1931-5-2 67 Humboldt 20 miles north of Garberville Comment
  HSC44333  Rosa gymnocarpa Brad Klipfel 1975-6-17 678 Humboldt Horse Mtn. Comment
  HSC57039  Rosa gymnocarpa Overton, Butler 1979-7-24 9675 Humboldt Near Friday Camp, close to the town of Willow Creek. 1250 Comment
  HSC72803  Rosa gymnocarpa Gail Newton 1980-6-16 159 Humboldt Near Monks Camp 109 Comment
  JEPS48709  Rosa gymnocarpa Hilda W. Grinnell 1932-7-9 1 Humboldt McKay Camp So. Fork Mt. 1676 Comment
  POM275419  Rosa gymnocarpa Lyman D. Benson 1928-7-12 489 Humboldt Weott Ranger Station. Mt.Range: Seaward N Coast; Watershed: South Fork Eel River. 61 Comment
  RSA2936  Rosa gymnocarpa Carl B. Wolf 1931-8-30 2376 Humboldt 11 miles above Blue Lake on the Lord Ellis Road to Willow Creek 305 Comment
  CAS-BOT-BC146835  Rosa nutkana Elizabeth Parsons Hawver 1915-6-1 s.n. Humboldt Carlotta Comment
  HSC19622  Rosa nutkana W. R. Brigham 1962-5-20 27 Humboldt Side of Old Hwy. 101, N of Big Lagoon rd. Comment
  POM87682  Rosa nutkana L. R. Abrams, R. Bacigalupi 1922-06 8275 Humboldt Big Lagoon S of Orick Comment
  UC555675  Rosa pisocarpa subsp. pisocarpa H. L. Mason 1928-7-14 4904 Humboldt near Garberville; East Fork of the Eel River Comment
  CAS-BOT-BC146883  Rosa rubiginosa Doris K. Kildale 1927-6-26 3602 Humboldt Big Lagoon Comment
  HSC100908  Rosa spithamea Carl C. Marshall Jun 1886 306 Humboldt Trail E of Hoopa. Comment
  HSC40998  Rubus leucodermis J. O. Sawyer 1975-10-17 2708 Humboldt Along Big Hill Rd. 915 Comment
  RSA89562  Rubus leucodermis Philip A. Munz 1954-7-23 19862 Humboldt About 6 miles E of Dinsmore's. 762 Comment
  UC467839  Rubus leucodermis P. E. Goddard 1906-6 673 Humboldt Lasseck Pk. Lasseck Pk Comment
  HSC19669  Rubus parviflorus Francis Winter 1960-4-24 Humboldt 2 mi. S of Hoopa Indian Reservation along Hoopa-Willow Creek Hwy. 152 Comment
  HSC57011  Rubus parviflorus Overton, Butler 1979-7-24 9604 Humboldt Near Titlow Hill, close to the town of Willow Creek. 1250 Comment
  JEPS46230  Rubus spectabilis W. L. Jepson 1934-5-7 16708 Humboldt near Big Tree footbridge (Bull Creek); Bull Creek Comment
  JEPS47290  Rubus spectabilis W. L. Jepson 1934-5-7 16708 Humboldt near Big Tree footbridge (Bull Creek); Bull Creek Comment
  RSA613682  Rubus spectabilis var. franciscanus D. D. Keck, J. Clausen 1935-6-16 3394 Humboldt Mouth of Little River. Comment
  HSC19674  Rubus ursinus J. J. Wagoner 1965-2-16 2 Humboldt 16 mi. N of Trinidad W of Hwy. 101 in Dry Lagoon State Beach Park 15 Comment
  UC1199052  Rubus ursinus Joseph P. Tracy 1935-5-25 13827 Humboldt along headwaters Larrabee Creek (Blocksburg); along headwaters of Larrabee Creek 457 Comment
  UCD113990  Rubus ursinus Linda M. Barker 1976-6-1 1565 Humboldt 3 miles west of Arcata. Comment
  RSA89568  Rubus vitifolius Philip A. Munz 1954-7-23 19865 Humboldt 5 miles SE of Carlotta Comment
  CAS-BOT-BC421935  Rumex acetosella Doris K. Kildale 1927-6-25 3576 Humboldt Fearriens Ranch between Thorn & Shelter Cove. Comment
  HSC59582  Rumex acetosella Rick Lundquist 1979-4-24 34 Humboldt SE corner 7th and Union St., Arcata 24 Comment
  HSC102639  Rumex californicus M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-29 1623 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1579 Comment
  HSC39980  Rumex crispus Linda M. Barker 1976-6-22 1622 Humboldt 3 mi. W of Arcata Comment
  HSC60366  Rumex crispus Terry Roth 1979-5-26 87 Humboldt Near jct. of Sunset Ave. and H St., Arcata Comment
  UC55521  Rumex obtusifolius Joseph Burtt Davy 1899-7-30 6169 B Humboldt near Ferndale Comment
  UC1197459  Rupertia physodes Joseph P. Tracy 1930-6-21 8774 Humboldt Larrabee Valley Northern Coast Ranges 701 Comment
  UC668107  Sagina apetala Joseph P. Tracy 1932-5-1 9839 Humboldt along Van Duzen R. Alton; North Coast Ranges, Van Duzen R. 30 Comment
  POM151674  Sagina decumbens subsp. occidentalis Joseph P. Tracy 1905-4-30 2172 Humboldt Sand Dunes of Ocean Beach at Humboldt Bay. Comment
  UC1198323  Sagina decumbens subsp. occidentalis Joseph P. Tracy 1911-7-9 3467 Humboldt near mouth Willow Creek (a tributary of Trinity R.); Northern Coast Ranges, Willow Creek (a tributary of Trinity 152 Comment
  UCSB34196  Salicornia pacifica Kearns, Dennis 1979-8-24 Humboldt In mean tide area of Arcata Bay, on periphery near the Arcata Boat Launching Facility at the South end of "I" Street Comment
  CAS-BOT-BC129896  Salix bonplandiana Joseph P. Tracy 1932-4-23 9835 Humboldt South Fork of Eel River, between Miranda and Redway - North Coast Ranges 91 Comment
  CAS-BOT-BC103814  Salix exigua Carleton R. Ball; Harold E. Parks; Joseph P. Tracy 1932-5-12 01234 Humboldt On floodplain of the Van Duezn River, 1 1/2 miles east of Alton 30 Comment
  CAS-BOT-BC107723  Salix hookeriana Alice Eastwood 1923-8-17 12320 Humboldt Samoa Comment
  CAS-BOT-BC107731  Salix hookeriana Harold E. Parks 1931-3-26 904 Humboldt Alton, on Van Duzen River 15 Comment
  JEPS12965  Salix hookeriana Joseph P. Tracy 1931-8-23 9617 Humboldt sand dunes near Samoa; Northern Coast Region, Humboldt Bay 6 Comment
  JEPS13090  Salix hookeriana Joseph P. Tracy 1936-10-24 15202 Humboldt Fortuna 15 Comment
  POM184870  Salix hookeriana H. E. Parks, Susan T. Parks 1932-4-7 1103 Humboldt Little River Lagoon. Trinidad. At sea level. 0 Comment
  RSA34284  Salix hookeriana Doris K. Kildale 1926-3-28 1691 Humboldt Redwood Creek at Berry's. Comment
  UC1173586  Salix hookeriana Joseph P. Tracy 1936-8-17 15159 Humboldt Mad R. at mouth of Lindsey Creek; Mad R., Lindsey Creek 15 Comment
  UC469116  Salix hookeriana Joseph P. Tracy 1927-3-13 7844 Humboldt mouth of Little River; Northern Coast Ranges, Little R. 6 Comment
  UC469127  Salix hookeriana Joseph P. Tracy 1931-4-4 9329 Humboldt sand dunes near Samoa; Northern Coast Region, on Humboldt Bay 6 Comment
  UC481277  Salix hookeriana Harold E. Parks 1931-8-1 1053 Humboldt Little River Lagoon Comment
  UC481378  Salix hookeriana Harold E. Parks and J. P. Tracy 1931-3-26 904 Humboldt on Van Duzen River Alton; Van Duzen River 15 Comment
  UC512001  Salix hookeriana Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-12 1236 Humboldt Blue Slide Van Duzen River 91 Comment
  UC519325  Salix hookeriana Joseph P. Tracy 1933-10-8 13089 Humboldt on Van Duzen R. Blue Slide; Northern Coast Ranges 91 Comment
  UCD111037  Salix hookeriana Linda M. Barker 1976-4-13 1383 Humboldt 3 miles west of Arcata. Comment
  JEPS14787  Salix laevigata Joseph P. Tracy 1933-6-9 12528 Humboldt along Eel River Shively; Northern Coast Ranges 30 Comment
  UC481824  Salix laevigata Mrs. H. P. Bracelin 1931-5-1 272 Humboldt between Miranda and Meyers (Sylvandale Station, Redwood Hwy., S. Fork Eel R.); Sylvandale Station, Redwood Hwy., S. Fork Eel R. Comment
  UC490519  Salix laevigata Joseph P. Tracy 1932-5-1 9879 Humboldt vicinity of Garberville; Northern Coast Ranges 121 Comment
  HSC19988  Salix lasiandra H. E. Parks 1931-3-24 911 Humboldt Along lower Eel River, near Fortuna Comment
  CAS-BOT-BC128189  Salix lasiandra var. lasiandra Harold E. Parks 1931-5-14 0959 Humboldt Van Duzen River between Alton and 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
  CAS-BOT-BC107645  Salix lasiolepis Joseph P. Tracy 1932-8-27 10753 Humboldt Blue Slide, on Van Duzen River 91 Comment
  HSC20003  Salix lasiolepis J. P. Tracy 1933-4-9 10969 Humboldt Blue Slide, Van Duzen River 91 Comment
  JEPS12922  Salix lasiolepis H. E. Parks and Joseph P. Tracy 1933-3-19 11006 Humboldt near Bridgeville; Northern Coast Ranges 182 Comment
  UC1196625  Salix lasiolepis Joseph P. Tracy 1933-3-19 10930 1/2 Humboldt Blue Slide Northern Coast Ranges, Van Duzen River (on gravel bar) 91 Comment
  UC469437  Salix lasiolepis Joseph P. Tracy 1931-10-12 9731 Humboldt Dinsmore's Ranch Northern Coast Ranges, Van Duzen River (opposite Buck Mt.) 670 Comment
  UC511971  Salix lasiolepis Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-13 1253 Humboldt 2 mi. e. of Redwood Hwy. and above Blue Lake Rd. Engelhart gravel pit (floodplain of Mad R.); Mad River Comment
  UC512025  Salix lasiolepis Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-17 1333 Humboldt near bridge on Trinity Highway (foot of bank); Trinity River 152 Comment
  UC512040  Salix lasiolepis Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-17 1322 Humboldt at Berry's Redwood Creek (on Trinity Hwy.) 274 Comment
  UC519340  Salix lasiolepis Joseph P. Tracy 1932-10-8 10866 Humboldt Berry's Mt. Northern Coast Ranges (on Trinity Hwy) 762 Comment
  UC519347  Salix lasiolepis Joseph P. Tracy 1933-10-15 13092 Humboldt along S. Fork Eel R. near Miranda; North Coast Ranges, S. Fork Eel R. 91 Comment
  POM214862  Salix lasiolepis var. sandbergii Joseph P. Tracy 1933-4-2 10959 Humboldt Berry's Mountain. On Trinity Hwy. E of Redwood Creek. 762 Comment
  RSA178543  Salix lasiolepis var. sandbergii Joseph P. Tracy 1950-4-20 18623 Humboldt Van Duzen River. 10 miles SE of Dinsmore's. About 4 miles SE of Kuntz. Comment
  SBBG57924  Salix melanopsis H. E. Parks 1931-10-15 1077 Humboldt Bishop Pine Lodge, Trinidad 75 Comment
  UC1196575  Salix melanopsis Joseph P. Tracy 1931-9-7 9633 Humboldt Trinity R. Valley at Willow Creek bridge; Northern Coast Ranges, Trinity R. Valley, Willow Creek 152 Comment
  UC481169  Salix melanopsis Harold E. Parks 1931-8-25 1061 Humboldt Van Duzen R. Blue Slide; , Blue Slide 90 Comment
  UC481267  Salix melanopsis Harold E. Parks 1931-5-28 1025 Humboldt Little River Lagoon Comment
  UC481357  Salix melanopsis Harold E. Parks 1931-5-14 956 a Humboldt Van Duzen R. above Bridgeville; Van Duzen R. 300 Comment
  UC490556  Salix melanopsis C. R. Ball, H. E. Parks and Joseph P. Tracy 1932-5-17 10069 Humboldt Redwood Creek at Berrys; North Coast Ranges, Redwood Creek 274 Comment
  UC490570  Salix melanopsis Joseph P. Tracy 1932-6-4 10129 Humboldt Bridgeville Northern Coast Ranges, Bridgeville 228 Comment
  UC511986  Salix melanopsis Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-12 1242 Humboldt Van Duzen R. at Blue Slide; Van Duzen R. 91 Comment
  SEINET770618 Image available Salix parksiana J. P. Parks 1931-5-14 962 Humboldt Van duzen River between Alton and carlotta, Humboldt County 15 Comment
  CAS-BOT-BC129202  Salix piperi Carleton R. Ball; Harold E. Parks; Joseph P. Tracy 1932-5-12 1231 Humboldt Floodplain of the Van Duzen River, 1 1/2 miles east of Alton 30 Comment
  CAS-BOT-BC129248  Salix piperi Joseph P. Tracy 1937-8-12 15658 Humboldt Snow Camp, most gourn in and around meadow. 1402 Comment
  CAS-BOT-BC129155  Salix scouleriana Doris K. Kildale 1926-9-5 2637 Humboldt Lasseek's Peaks - Coral Camp 1661 Comment
  CAS-BOT-BC129165  Salix scouleriana Harold E. Parks 1933-1-1 1341 Humboldt Spruce Cove, Highway 101, Trinidad 64 Comment
  HSC96596  Salix scouleriana Gordon Leppig 2003-2-22 1814 Humboldt Eureka Slough, NE corner of log pond 3 Comment
  CAS-BOT-BC126275  Salix sessilifolia C. R. Ball; H. E. Parks; J. P. Tracy 1932-5-17 01337 Humboldt At Willow Creek, (Graham Ranch), near its junction with Trinity River 152 Comment
  POM219686  Salix sessilifolia H. E. Parks 1931-5-14 964 Humboldt Van Duzen River between Alton and Carlotta. 15 Comment
  CAS-BOT-BC128953  Salix sitchensis A. T. Whittemore 1979-4-5 79 -015 Humboldt Arcata, cleared field along Alliance Road immediately north of Arcata High School Comment
  HSC37880  Salix sitchensis Thomas W. Nelson 1976-3-22 2282 Humboldt Cooper's Gulch near Franklin Elementary School Comment
  HSC79545  Salix sitchensis Kenneth Clark 1980-3-24 546 Humboldt Alluvial terrace of Dead Man's Gulch 15 Comment
  UC481214  Salix sitchensis Harold E. Parks 1931-5-20 995 Humboldt Mad R. Blue Lake; , Blue Lake 15 Comment
  UC490531  Salix sitchensis Joseph P. Tracy 1932-7-18 10724 Humboldt head of Brett Hole; Klamath Mts., Trinity Summit, Brett Hole 1828 Comment
  HSC101557  Salvia mellifera J. P. Smith, J. O. Sawyer 2009-10-4 12685 Humboldt Along New Navy Base Road near Samoa Boat Ramp 2 Comment
  HSC98110  Sambucus mexicana Cara Witte 2007-6-27 362 Humboldt Forest Service Road 5N04. Near Grouse Mountain. Approximately 1/4 mile east of spring. 1583 Comment
  HSC41315  Sambucus nigra subsp. caerulea Brad Klipfel 1974-9-2 539 Humboldt Horse Mtn. Comment
  HSC3971  Sambucus racemosa var. racemosa R. A. Rasp 1964-5-20 44 Humboldt HSU campus, beside Jolly Giant Creek. Comment
  UC1225816  Sambucus racemosa var. racemosa Joseph P. Tracy 1947-8-24 17912 Humboldt e Box Camp; Trinity Summit 1676 Comment
  UCD137261  Sambucus racemosa var. racemosa Joseph P. Tracy 1947-8-24 17912 Humboldt Trinity Summit, east of Box Camp. 1676 Comment
  HSC68612  Sanicula crassicaulis Jacqueline Greenleaf 1980-7-16 245 Humboldt Near Buck Mountain. 1250 Comment
  UC183568  Sanicula crassicaulis Joseph P. Tracy and Ernest B. Babcock 1912-5-11 3599 Humboldt near Hydesville (Northern Coast Region); Northern Coast Region 60 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
  HSC91934  Sanicula crassicaulis E. Mackey 1986-5-13 Humboldt Patrick's Point State Park, edge of forest at Palmer's Point Comment
  JEPS1001  Sanicula graveolens Joseph P. Tracy 1926-5-2 7448 Humboldt nar Ruby Creek (Northern Coast Ranges, Willow Creek Canyon); Northern Coast Ranges, Willow Creek Canyon 609 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
  HSC65834  Sanicula tracyi R. York 1980-5-23 622 Humboldt Near Buck Mtn. 1524 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
  RSA43855  Saponaria officinalis H. M. Pollard 1948-7-26 s.n. Humboldt Banks of Klamath River near Orleans. Comment
  SEINET3411481 Image available Saxifraga mertensiana Joseph P. Tracy 1922-4-30 6009 Humboldt Mouth of South Fork of Trinity river 152 Comment
  RSA245226  Scabiosa atropurpurea Thomas W. Nelson 1970-10-31 280 Humboldt Beside Hwy 101 between Arcata and Eureka. Ca. 3 miles S of Arcata. Comment
  JEPS945  Scandix pecten-veneris Joseph P. Tracy 1923-6-20 6342 Humboldt Northern Coast Ranges, Garberville Garberville; Northern Coast Ranges, Garberville 121 Comment
  UC1197073  Scandix pecten-veneris Joseph P. Tracy 1923-3-17 6162 Humboldt Northern Coast Ranges, Garberville Garberville; Northern Coast Ranges, Garberville 121 Comment
  SEINET3913367  Schoenoplectus pungens var. badius J. D. Ackerman 1975-6-10 465 Humboldt About 1 mi. N of Samoa Bridge turnoff from Samoa Blvd., S of Manila. Humboldt Bay.; 0 Comment
  UC1103630  Scirpus cernuus Joseph P. Tracy 1939-8-20 16433 Humboldt Big Lagoon 6 Comment
  HSC48781  Scirpus microcarpus Brad Klipfel 1974-5-11 336 Humboldt SW side of Big Lagoon Comment
  HSC21125  Scrophularia californica D. A. Shally 1965-5-15 43 Humboldt Arcata, 1/4 mi. NE of HSC campus on Jolly Giant Creek Comment
  RSA425151  Scrophularia californica Christopher Davidson 1973-5-29 2202 Humboldt 2 miles S of Carlotta on Hwy 36 61 Comment
  SEINET12330006  Scrophularia californica F. H. Utech 1986-1 86 -407 Humboldt Cape Mendocino, along Pacific Ocean 6 Comment
  CHSC68503  Scrophularia californica subsp. californica Vernon H. Oswald 1997-4-10 8318 Humboldt Road paralleling Hwy. 101 between Clam Beach and Little River State Beach, north of Arcata. 30 Comment
  POM126380  Scutellaria antirrhinoides Chesnut, E. R. Drew 1888-7-10 s.n. Humboldt Jarnigan s. Comment
  UC32586  Scutellaria antirrhinoides Chesnut and Drew 1888-7-9 Humboldt Jannigan's Comment
  CAS-BOT-BC63881  Sedum laxum subsp. heckneri David Imper 1985-7-1 s.n. Humboldt Slopes of Onion Mountain. 1219 Comment
  HSC59107  Sedum laxum subsp. heckneri M. A. Baker 1978-7-17 594 Humboldt On the N bank of the Salmon River, 5 km E of its confluence with the Klamth River Comment
  HSC6478  Sedum radiatum W. K. Parks Jul 1933 Humboldt S Fork Mtn. Comment
  HSC70725  Sedum radiatum Gail Newton 1980-7-14 1520 Humboldt Near Deadman Ridge 1097 Comment
  RSA0081474  Sedum spathulifolium C. B. Wolf 1939-7-8 3414 Humboldt North bank of Matolle River, 2 miles above Petrolia. 61 Comment
  SEINET12218775  Sedum spathulifolium J. P. Tracy 1950-1 18715 Humboldt Wildcat Road, 2 mi S of Ferndale 305 Comment
  UC1225751  Sedum spathulifolium Joseph P. Tracy 1948-5-15 17981 1/2 Humboldt along Trinity Highway Willow Creek Canyon (on rocks at the East Fork Willow); East Fork Willow Creek, Willow Creek Canyon 457 Comment
  HSC44633  Sedum spathulifolium var. spathulifolium M. Alcasas 1978-6-3 123 Humboldt Titlow Hill Rd., 0.5 mi. from Hwy. 299 1037 Comment
  OBI79041  Selaginella rupestris Joseph P. Tracy 1920-10-24 5407 Humboldt Near Korbel, in dense shade. 61 Comment
  HSC45074  Selaginella wallacei R. Sutherland 1978-4-22 1 .22478 Humboldt Along King's Crest Trail 1098 Comment
  UC1223022  Senecio glomeratus Joseph P. Tracy 1950-9-10 19360 Humboldt 1 mi n Capetown; Bear River Ridge 304 Comment
  CAS-BOT-BC363808  Senecio integerrimus var. exaltatus Doris K. Kildale 1926-4-11 1763 Humboldt McLellan Mountain 822 Comment
  CAS-BOT-BC364018  Senecio integerrimus var. major L. B. Kildale 1928-5-27 5957 Humboldt Kneeland Prairie 853 Comment
  UC1223048  Senecio integerrimus var. major Joseph P. Tracy 1946-5-19 17537 Humboldt Kneeland Prairie 762 Comment
  UC1199491  Senecio minimus Joseph P. Tracy 1936-8-23 15161 Humboldt Carlotta Northern Coast Ranges Comment
  UC205181  Senecio minimus Joseph P. Tracy 1919-8-31 5185 Humboldt Eureka Northern Coast Ranges,Eureka Comment
  RSA167390  Senecio sylvaticus Joseph P. Tracy 1949-8-11 18467 Humboldt East of headwaters of Redwood Creek, electric power-line southward. Kinsey Ridge south from Grouse Mt., 2 to 6 miles. 1280 Comment
  SEINET11802700  Senecio vulgaris J. P. Tracy 1943-1 17454 Humboldt Eel River Bar at mouth of Van Duzen, near Alton Comment
  SEINET7881647 Image available Senecio vulgaris H. E. Parks, S. T. Parks 1934-1 24234 Humboldt Spruce Cove, Trinidad 61 Comment
  MACF017376  Sequoia sempervirens Trudy R. Ericson 1974-8-6 202 Humboldt Off U. S. 101, exit to Patrick's Point State Beach Park, near Seaward Drive Comment
  RSA1501  Sequoia sempervirens E. R. Johnson 1929-08 1436 Humboldt Pacific Lumber Co., along the Eel River, Dyerville Comment
  UC1196921  Sequoia sempervirens J. P. Tracy 1897-2-22 153 Humboldt immediate vicinity Eureka 0 Comment
  UC1222350  Sequoia sempervirens Joseph P. Tracy 1950-12-18 19387 Humboldt Parks's Place Trinidad, Parks' Place 3 Comment
  UC275473  Sequoia sempervirens Joseph P. Tracy 1925-3-15 6945 Humboldt Blue Slide on Van Duzen River; Northern Coast Region 30 Comment
  UC709422  Sequoia sempervirens Joseph P. Tracy 1941-3-9 16804 Humboldt Camp Grant 48 Comment
  SEINET13289881 Image available Sequoia sempervirens Unknown 1950-1 Humboldt Trinidad, Park's place Comment
  SEINET3876370 Image available Sequoia sempervirens Ronald J. Mastrogiuseppe 1966-1-16 s.n. Humboldt Along State Route 299 from Arcata to Redding, Demonstration Forest, Simpson Timber Company.; 0 Comment
  RSA44417  Setaria pumila Henry M. Pollard 1947-8-19 s.n. Humboldt Klamath River near Wilson Creek, Orleans region Comment
  JEPS50069  Sidalcea diploscypha W. L. Jepson 1934-5-7 16701 Humboldt Buckeye Prairie Bull Creek, Buckeye Prairie Comment
  RSA168965  Sidalcea malachroides Joseph P. Tracy 1950-7-12 19033 Humboldt Butter Valley Road, 2 miles east of Cameron Hill jct. near Kneeland. Comment
  HSC16014  Sidalcea malviflora F. B. Plett 1963-5-15 46 Humboldt 1.5 mi. N of Trinidad along old Hwy. 101 Comment
  HSC103268  Sidalcea malviflora subsp. patula John McRae 2014-5-8 Humboldt South of Fortuna; north side of Hwy. 36, approx. 3/4 mi. east of intersection with Hwy 101. 18 Comment
  HSC56434  Sidalcea malviflora subsp. patula Griswold, Butler 1979-7-12 7148 Humboldt Near Groves Prairie, close to the town of Willow Creek. 1256 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
  UC668141  Sidalcea oregana subsp. eximia Joseph P. Tracy 1937-7-16 15432 Humboldt Dow's Prairie 60 Comment
  UC902190  Sidalcea oregana subsp. eximia Joseph P. Tracy 1949-8-11 18461 Humboldt Snow Camp 1432 Comment
  HSC104340  Sidalcea oregana subsp. eximia James Regan,, Humboldt Redwood Co., LLC 1 Humboldt Table Bluff 46 Comment
  HSC103762  Silene M. R. Mesler, Sydney Carothers 2013-6-3 1481 Humboldt Near Castle Rock on FS 5N40 about 3.2 miles from NF 60 1248 Comment
  HSC103725  Silene bolanderi M. R. Mesler, C. Wilson 2010-6-18 825 Humboldt Along Hwy 36 near pmm 32.53 771 Comment
  CDA24094  Silene californica R. Spadoni 1992-6-15 Humboldt Along mad River east of Arcata, near Blue Lake, Redwood Valley. 0 Comment
  HSC74456  Silene campanulata Gail Newton 1980-8-10 2011 Humboldt Near Blake Mtn. 1798 Comment
  HSC57999  Silene campanulata subsp. glandulosa G. L. Clifton, Griswold 1979-7-31 11778 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1805 Comment
  UC630502  Silene gallica H. E. and S. T. Parks June, 1936 5634 Humboldt Spruce Cove , Spruce Cove (Trinidad) Comment
  UCR40032  Silene hookeri subsp. bolanderi T. Jimerson 1983-5-26 s.n. Humboldt Six Rivers National Forest, Lower Trinitty Road; roadside bank on the road to Brush Mountain Lookout off Friday Ridge Road. (6N08) 1088 Comment
  HSC4165  Silene laciniata subsp. californica Jack Rockwell 1962-4-29 48 Humboldt N side Hwy. 30 253 Comment
  HSC4174  Silene laciniata subsp. californica R. Spellenberg 1964-6-16 434 Humboldt 0.25 mi. W of Hwy. 299 bridge over S Fork of Trinity River Comment
  UC162883  Silene menziesii Harley P. Chandler June, 1901 1319 Humboldt Hupa Indian Reservation North Coast Ranges, Hupa Indian Reservation 152 Comment
  HSC67883  Silybum marianum J. P. Smith 1973-5-26 6872 Humboldt Scotia Bluffs along the Eel River near Rio Dell Comment
  UCD135877  Silybum marianum James P. Smith; Advanced Plant Taxonomy Class 1973 1973-5-26 6872 Humboldt Scotia Bluffs along the Eel River near Rio Dell. Comment
  UC183562  Sisymbrium altissimum Joseph P. Tracy 1913-6-14 4117 Humboldt in Valley of Van Duzen River (opposite Buck Mountain, Dinsmore's Ranch); Northern Coast Ranges, Dinsmore's Ranch 762 Comment
  POM299501  Sisyrinchium bellum C. C. Harris, S. K. Harris 1942-6-9 1219 Humboldt 3 miles north and 1 mile west of Fernbridge 33 Comment
  HSC23117  Sisyrinchium californicum Norman Dennis 1965-6-3 142 Humboldt Big Lagoon County Park, SW corner of Big Lagoon Comment
  HSC62981  Sisyrinchium californicum David Wheeler 1979-5-22 129 Humboldt Samoa, intersection of Samoa Blvd. and the railroad tracks near Arcata Redwood Co. Comment
  UC1192312  Sisyrinchium californicum Malcolm A. Nobs, S. Galen Smith 1949-8-3 1196 Humboldt at the suthern outskirts of Eureka Comment
  SEINET3991727  Smilacina amplexicaulis Unknown 1924-8-10 Humboldt Strongs Station. 91 Comment
  JEPS62111  Smilacina racemosa W. L. Jepson 1932-7-30 16449 Humboldt Bull Creek 121 Comment
  UC15050  Smilacina racemosa Joseph Burtt Davy and Walter C. Blasdale 1899-6-13 5497 Humboldt Camp Grant to Pepperwood; North Coast Ranges Comment
  UC585976  Solanum americanum Joseph P. Tracy 1934-11-4 13698 Humboldt Shively 30 Comment
  HSC78987  Solanum aviculare L. P. Janeway 1984-5-16 803 Humboldt N spit of Humboldt Bay alongside dirt rd. on S side of Coast Guard Station 3 Comment
  RSA337440  Solanum laciniatum Robert F. Thorne, Percy C. Everett 1965-8-5 35160 Humboldt Samoa Dunes. 3 Comment
  HSC96295  Solanum parishii J. Breton, A. Livingston 2005-6-15 12 Humboldt NE of Grouse Mtn. 1327 Comment
  UC1196157  Solanum sarrachoides Joseph P. Tracy 1940-10-15 16758 Humboldt Trinity River Valley at Willow Creek Willow Creek; Trinity River Valley, Willow Creek 152 Comment
  UC902078  Solanum umbelliferum Joseph P. Tracy 1949-5-8 18293 Humboldt 5 mi e (of town) Carlotta (by old Strong's District School House) 60 Comment
  CAS-BOT-BC365441  Solidago elongata Carl B. Wolf 1937-9-9 9311 Humboldt North Coast Range, Wildcat Ridge, 6 3/10 mi. So. of Ferndale 304 Comment
  JEPS32395  Solidago elongata Lincoln Constance 1934-6-12 867 Humboldt n bank South Fork Eel River (Bull Creek Road, Dyerville); n bank South Fork Eel River, Bull Creek Region, Dyerville Comment
  UC1541616  Solidago elongata Harold E. Parks Jul 1 1931-Aug 1 1931 1056 Humboldt Trinidad 76 Comment
  UC175192  Solidago elongata Joseph P. Tracy 1913-9-9 4397 Humboldt Patrick's Point Northern Coast Ranges, Patrick's Point 30 Comment
  UC198623  Solidago elongata Joseph P. Tracy 1917-9-1 4835 Humboldt Murphy meadow Northern Coast Ranges, , Murphy meadow (Bald Mountain) 1066 Comment
  UC205162  Solidago elongata Joseph P. Tracy 1919-9-22 5260 Humboldt Trinity Summit Northern Coast Ranges, Trinity Summit 1889 Comment
  UC494190  Solidago elongata H. E. and S. T. Parks 1930-9-14 785 Humboldt n shore Big Lagoon Comment
  HSC49092  Solidago spathulata Patricia Shesgreen 1978-8-12 137 Humboldt Along Hwy. 255, 1/4 mi. S of Samoa Bridge, Samoa Comment
  POM254120  Solidago spathulata S. K. Harris 1939-9-5 990 Humboldt At Samoa. Comment
  SEINET201025 Image available Solidago spathulata J. P. Tracy 1901-8-7 1268 Humboldt Samoa, opp. Eureka. Comment
  UC249853  Solidago spathulata Joseph P. Tracy 1924-9-21 6901 Humboldt around Humboldt Bay (Eureka); Northern Coast Region, around Humboldt Bay, Eureka 15 Comment
  LA203960  Solidago velutina subsp. californica Joseph P. Tracy; 1937-9-5 15682 Humboldt Trinty River Valley, at Willow Creek 152 Comment
  BLMAR757  Solidago velutina subsp. californica Jennifer Wheeler 2013-9-4 757 Humboldt King range, strawberry rock grazing allotment 252 Comment
  CAS-BOT-BC365811  Soliva sessilis L. R. Abrams 1918-6-12 7080 Humboldt In street, Eureka Comment
  HSC35010  Soliva sessilis J. O. Sawyer 1975-5-20 2695 Humboldt 1445 Chester Ave., Sunnybrae Comment
  CAS-BOT-BC374597  Sonchus oleraceus Joseph P. Tracy 1935-5-16 13805 Humboldt At Eureka 30 Comment
  HSC23681  Sorbus scopulina J. O. Sawyer 1970-6-26 2302 Humboldt 1860 Comment
  UC198647  Sparganium emersum var. emersum Joseph P. Tracy 1917-5-30 4808 Humboldt near mouth of Little River; Northern Coast Ranges 6 Comment
  HSC93849  Spartina densiflora Gordon Leppig, Kai Neander 1999-4-30 1130 Humboldt Humboldt Bay, Eureka, 30 m S of Del Norte St. fishing pier 1 Comment
  UCD99184  Spergula arvensis Collector unknown 1925-6-7 1613 Humboldt Willow Camp. Comment
  RSA0097079  Spergularia Thekla Mohr 1919-07 s.n. Humboldt Eel River. Comment
  HSC95251  Spergularia macrotheca var. macrotheca Andrea Pickart 2002-6-27 125 Humboldt Mad River Slough and Dunes, N of parking lot area at N end of access road. 0 Comment
  HSC39156  Spergularia rubra D. E. Anderson, J. P. Smith 1971-6-28 - 1269 Humboldt 2.5 mi. S of Blue Lake along the Mad River Comment
  UC1191500  Spiraea douglasii Malcolm A. Nobs and S. Galen Smith 1949-8-9 1226 Humboldt 1 mi n Arcata (at junction of Highway 101 and Highway 299); Mad River Valley Comment
  UC666994  Spiranthes porrifolia Joseph P. Tracy 1937-6-26 15376 Humboldt Willow Creek Trinity River Valley 152 Comment
  UC672873  Spirodela polyrhiza Joseph P. Tracy 1932-8-21 10371 Humboldt w slope Chaparral Mt. (Three Cabins Ranch, on e side of Mad River) 457 Comment
  HSC100156  Spirodela polyrhiza Kenneth Clark 1979-4-21 148 Humboldt Off of Cranell Rd., 50 ft. E of Hwy. 101 Comment
  RSA134646  Stachys ajugoides Harlan Lewis 1940-7-3 s.n. Humboldt Humboldt County: Little River Beach State Park Comment
  UC630639  Stachys ajugoides var. ajugoides Joseph P. Tracy 1939-6-23 16312 Humboldt Park's garden Trinidad 3 Comment
  UC535709  Stachys ajugoides var. rigida Eleanor Armstrong 1934-5-18 Humboldt Richardson Grove Comment
  UC577330  Stachys ajugoides var. rigida Joseph P. Tracy 1934-7-18 13455 Humboldt Grouse Mountain North Coast Ranges 1615 Comment
  JEPS63031  Stachys ajugoides var. rigida Frank W. Peirson 1926-7-12 7034 Humboldt near bridge over Redwood Creek (Orick) Comment
  UCLA71142  Stachys ajugoides var. rigida Joseph P. Tracy 1938-8-21 16131 Humboldt in front of s end Stone Lagoon (along coast); Dry Lagoon 3 Comment
  UCR275115  Stachys bullata Charity A. Hartshorn 2016-4-24 17 Humboldt Arcata Marsh & Wildlife Sanctuary, east end of Klopp Lake 7 Comment
  JEPS63026  Stachys chamissonis Joseph P. Tracy 1940-9-26 16726 Humboldt Eureka 3 Comment
  SEINET10499253  Stachys chamissonis H. Lewis 1940-7-3 Lewis s.n. Humboldt Little river beach state park Comment
  RSA447390  Stachys emersonii Bonnie C. Templeton 1964-6-13 10089 Humboldt Trinidad Head, near Lighthouse Point. Comment
  RSA12456  Stachys rigida subsp. quercetorum Carl B. Wolf 1934-6-30 5837 Humboldt 7 miles from Shelter Cove on road to Briceland. 152 Comment
  CAS-BOT-BC175343  Stellaria borealis subsp. sitchana W. R. Dudley 1899-6-1 s.n. Humboldt Eureka Peninsula Comment
  UC1223446  Stellaria borealis subsp. sitchana Joseph P. Tracy 1950-7-6 19020 Humboldt 3 mi s Burr Valley (w side Buck Mountain); Buck Mountain 1158 Comment
  HSC4283  Stellaria crispa D. E. Anderson 1962-3-31 1963 Humboldt Along new Hwy. 101, W side of Freshwater Lagoon Comment
  HSC4279  Stellaria media Jack Rockwell 1962-4-5 30 Humboldt N bank of Van Duzen River, E of Hwy. 101 Comment
  HSC40578  Stipa lemmonii Thomas W. Nelson, Jane P. Nelson 1976-6-22 2870 Humboldt SW facing slope on Goat Hill. 1666 Comment
  HSC102188  Stipa nelsonii var. dorei M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-4 1102 Humboldt Andy's Camp 1564 Comment
  HSC73750  Streptanthus tortuosus M. A. Baker 1980-7-15 2942 Humboldt Near Whiting Ridge. 1341 Comment
  JEPS54025  Streptanthus tortuosus var. orbiculatus W. L. Jepson Jul 16 1902-Jul 23 1902 2118 Humboldt Trinity Summit 2133 Comment
  UC1198798  Streptanthus tortuosus var. orbiculatus Joseph P. Tracy 1913-6-17 4165 Humboldt near summit Northern Coast Ranges, Buck Mountain 1524 Comment
  UC161577  Streptanthus tortuosus var. orbiculatus Joseph P. Tracy July 1908 2764 Humboldt ridge between Van Duzen and Mad Rivers near Low Gap; Northern Coast Ranges 914 Comment
  HSC58105  Streptanthus tortuosus var. tortuosus G. L. Clifton, Terry Griswold 1979-8-1 12040 Humboldt Near N Trinity Mtn., close to the town of Hoopa 1799 Comment
  CAS-BOT-BC269577  Symphoricarpos albus var. laevigatus H. E. McMinn 1922-8-5 349 Humboldt Along Van Duzen River Comment
  HSC3999  Symphoricarpos albus var. laevigatus J. E. Lankila 1962-5-14 18 Humboldt W bank of Eel River across from Shively abour 500 ft. N of Bear Creek. Comment
  RSA134176  Symphoricarpos albus var. laevigatus P. C. Everett, E. K. Balls 1959-10-25 23959 Humboldt 14 miles W of Willow Creek on Hwy 299 to Arcata. Comment
  UC602502  Symphoricarpos mollis Joseph P. Tracy 1936-6-28 15013 Humboldt near Murphy Meadows (Bald Mt); Bald Mt. 975 Comment
  HSC95386  Symphyotrichum chilense Andrea Pickart 2002-7-9 174 Humboldt Bracut Marsh in zone between brackish and riparian 10 Comment
  UC1199308  Symphyotrichum hendersonii Joseph P. Tracy 1935-7-27 14277 Humboldt Corral Prairie Trinity Summit 1584 Comment
  UC1222982  Symphyotrichum hendersonii Joseph P. Tracy 1941-8-24 17040 Humboldt near McKay camp; South Fork Mountain 1676 Comment
  CAS-BOT-BC99369  Symphyotrichum subspicatum W. R. Dudley 1899-6-1 s.n. Humboldt Eureka [Penninsula] Peninsula Comment
  UC27647  Synthyris reniformis C. C. Marshall 1887-1-7 Humboldt hills near Mad River 609 Comment
  CHSC68504  Synthyris reniformis var. cordata Vernon H. Oswald 1997-4-10 8331 Humboldt Elk Head, north end of Trinidad State Beach. 30 Comment
  UCD136744  Tanacetum bipinnatum Roman Gankin 1965-8-6 553 Humboldt west of road; 1.3 miles south of Samoa, Samoa Peninsula. Comment
  UCSB6706  Tanacetum bipinnatum Phillips, Priscilla 1960-7-2 Humboldt Big Lagoon Park, north of Trinidad, Route 101 Comment
  SBBG53001  Tanacetum vulgare J. D. Hobson -Jun-1966 Humboldt Loleta Comment
  UC1196936  Taraxia ovata Joseph P. Tracy 1942-5-16 17343 Humboldt w side of river near Garberville; S. Fork of Eel River 152 Comment
  HSC31760  Taxus brevifolia Timothy B. Devine 1974-5-4 317 Humboldt Junction of Hwy. 299 and Titlow Hill Rd., E facing slope 875 Comment
  HSC102585  Tellima grandiflora M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-29 1572 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1579 Comment
  HSC56124  Tellima grandiflora G. L. Clifton, Griswold 1979-8-1 11912 Humboldt Near Mill Creek Lakes, close to the town of Hoopa. 1692 Comment
  CAS-BOT-BC399767  Thalictrum polycarpum Alice Eastwood 1921-7-21 10669 Humboldt Vanduzen [Van Duzen] River, on the road Comment
  UC1239774  Thelypteris nevadensis Joseph P. Tracy 1935-7-22 14124 Humboldt near Forks of Tish Tang-a Tang Creek Trinity Summit 1219 Comment
  UC503058  Thelypteris nevadensis Joseph P. Tracy 1932-7-20 10743 Humboldt Trinity Summit; Klamath Mts. 1371 Comment
  CAS-BOT-BC5391  Thlaspi californicum Volney Rattan 1882-6-1 s.n. Humboldt at Kneeland Prairie Comment
  CHSC35608  Thlaspi montanum var. montanum Thomas W. Nelson; James L. Nelson 1980-6-10 5434 A Humboldt Six Rivers National Forest. Along the east side of Red Mountain. 1371 Comment
  CAS-BOT-BC81315  Thuja plicata Doris K. Kildale 1926-7-15 2378 Humboldt Camp Bauer - Mad River near Korbel Comment
  CAS-BOT-BC81316  Thuja plicata Doris K. Kildale 1926-11-13 2850 Humboldt Eureka 21 Comment
  LA31711  Thuja plicata C. B. Wolf; 1930-10-25 1764 Humboldt 1 mi. above Blue Lakes on road to Willow Creek (Lord Ellis Road) 243 Comment
  RSA1090  Thuja plicata E. R. Johnson 1928-8-26 1149 Humboldt 7 miles east of Arcata Comment
  RSA352355  Thuja plicata J. P. Smith, AdvancedPlantTaxonomyClass 1971-10-9 5021 Humboldt Mad River above the Fish Hatchery. Comment
  UC1190156  Thuja plicata Ira L. Wiggins 1955-7-31 13594 Humboldt 9 mi e of Arcata (hillside, along Highway 299); Highway 299 316 Comment
  UC229825  Thysanocarpus curvipes Joseph P. Tracy 1922-4-30 6032 Humboldt near Willow Creek (Trinity River Valley); Northern Coast Ranges, , Willow Creek 152 Comment
  RSA0039379  Thysanocarpus curvipes var. curvipes John H. Thomas 1968-4-21 14363 Humboldt Near mouth of Bluff Creek about 6 miles NE of Weitchpec near Bluff Creek campground. 140 Comment
  SDSU9574  Tiarella Harvey 1938-8-14 2320 Humboldt Between Arcarta & Willow Creek, US 299. Comment
  HSC99404  Tiarella trifoliata var. unifoliata K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-6-28 53 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  POM48093  Tiarella trifoliata var. unifoliata J. B. Feudge 1923-7-19 58 Humboldt Fortuna. 15 Comment
  SD50778  Tiarella trifoliata var. unifoliata Darley F. Howe 1959-8-5 2809 Humboldt Drexel Grove, 5 miles north of Weott on #101 alternate Comment
  UC180222  Tofieldia occidentalis subsp. occidentalis Joseph P. Tracy 1914-9-6 4606 Humboldt near Seidell Ranch (peat bog); Bald Mountain, between High Prairie and Snow Camp Comment
  UC154080  Tolmiea diplomenziesii J. P. Tracy 1900-5-30 832 Humboldt immediate vicinity Eureka 0 Comment
  UC32566  Tonella tenella W. C. Blasdale 1896-6-8 Humboldt Graham's Comment
  UC1561282  Torilis arvensis Barbara Ertter with Thomas J. Delendick 1987-5-16 6916 Humboldt Hwy 299 roadside ca 8 mi e Arcata (9 1/2 mi w of Lord Ellis summit); w of Lord Ellis summit Comment
  SDSU2311  Torilis arvensis D. F. Howe 1961-7-31 3100 Humboldt 6 miles south of Garberville on #101. 91 Comment
  HSC58686  Torreyochloa pallida var. pauciflora Overton 1979-8-1 12380 Humboldt Near Mill Creek, close to the town of Hoopa 1341 Comment
  CAS-BOT-BC169176  Toxicodendron diversilobum Joseph P. Tracy 1937-5-30 15301 Humboldt Larrabee Creek, 5 miles N. of Blocksburg 365 Comment
  HSC49820  Toxicodendron diversilobum R. York 1979-4-21 244 Humboldt Behind the town of Korbel, Camp Bauer Comment
  CAS-BOT-BC323056  Tracyina rostrata Joseph P. Tracy 1930-6-15 8762 Humboldt Dobbyn Creek 152 Comment
  LA87902  Tracyina rostrata Joseph P. Tracy; 1916-6-20 4735 Humboldt Alder Point 304 Comment
  SEINET11800250  Tracyina rostrata J. P. Tracy 1950-1 18859 Humboldt Dobbyn Creek, 3 mi NE of Alderpoint 213 Comment
  HSC98085  Tragopogon dubius Cara Witte 2007-7-3 400 Humboldt National Forest 1. 2 miles south from intersection with 5N04. 1561 Comment
  UC668060  Trautvetteria caroliniensis var. occidentalis Joseph P. Tracy 1937-7-2 15387 Humboldt ne of Hawkins Bar (in Trinity Summit Range, Happy Camp Mountain); Trinity Summit Range, Happy Camp Mountain 1280 Comment
  HSC14449  Trichostema lanceolatum D. E. Anderson 1963-10-6 2878 Humboldt Mad River bed, across from Essex Junction. Comment
  HSC14453  Trichostema laxum D. E. Anderson 1963-10-6 2877 Humboldt Mad River bed, across from Essex Junction. Comment
  UC1239715  Trichostema laxum Joseph P. Tracy 1921-10-9 5968 Humboldt Blue Lake, on gravel bar of Mad River Northern Coast Ranges 30 Comment
  UC162685  Trichostema laxum Joseph P. Tracy 1911-7-10 3492 Humboldt Valley of Trinity River at mouth of Willow Creek Northern Coast Ranges 152 Comment
  UC577371  Trichostema laxum Joseph P. Tracy 1926-10-15 7815 Humboldt South Fork of Trinity River, mountain slopes W of mouth 304 Comment
  UCLA30918  Trichostema laxum Harlan Lewis 1955-7-19 Humboldt 0.1 mi W of Trinity County line on State Highway 36 Comment
  HSC17928  Trientalis latifolia Paul Shields May 1955 Humboldt HSC Campus Comment
  HSC73246  Trientalis latifolia M. Baker 1980-5-18 1326 Humboldt Near Black Mtn. 1006 Comment
  UC1197235  Trifolium albopurpureum var. dichotomum Joseph P. Tracy 1921-6-12 5820 Humboldt Kneeland Prairoe Northern Coast Ranges 762 Comment
  UC1223387  Trifolium albopurpureum var. dichotomum Joseph P. Tracy 1938-5-1 15734 Humboldt along west side of Trinity River (at Willow Creek) Comment
  CHSC84526  Trifolium arvense John Dittes; Josephine Guardino 2003-6-7 2003 -65 Humboldt Klamath Range; ca. 7.7 air-mile southwest of Orleans, ca. 4.1 air-miles northeast of confluence of Trinity River and Klamath River, ca. 0.3, air-mile northwest of confluence of Klamath River and Aikens Creek. Along entrance road to Aikens Creek Campground. 106 Comment
  HSC71212  Trifolium arvense Thomas W. Nelson, Jane P. Nelson 1979-5-25 4697 Humboldt Willow Creek Comment
  UC495698  Trifolium barbigerum Joseph P. Tracy 1927-5-14 8028 Humboldt Willow Creek Trinity River Valley 152 Comment
  UC249524  Trifolium bifidum var. bifidum Joseph P. Tracy 1922-4-30 5992 Humboldt near Willow Creek; Northern Coast Ranges, Trinity River Valley 152 Comment
  UC1541608  Trifolium bifidum var. decipiens Parks and Tracy 1930-5-25 862 Humboldt Laribee Valley 762 Comment
  UC1223327  Trifolium campestre Joseph P. Tracy 1936-8-1 15060 Humboldt 6 mi se Blue Lake (near Bear Canyon Creek, in logged-off country) 365 Comment
  UC162784  Trifolium campestre J. P. Tracy 1906-6-25 2512 Humboldt immediate vicinity Eureka 0 Comment
  UC495641  Trifolium ciliolatum Joseph P. Tracy 1929-5-5 8567 Humboldt Phillipsville Northern Coast Ranges, South Fork Eel River 121 Comment
  UC1223483  Trifolium cyathiferum Joseph P. Tracy 1937-7-19 15458 Humboldt lower foothills northwest slope; Buck Mtn Comment
  UC249727  Trifolium depauperatum var. depauperatum Joseph P. Tracy 1921-5-30 5480 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  POM301285  Trifolium dichotomum Joseph P. Tracy 1942-5-16 11555 Humboldt Vicinity of Garberville. 152 Comment
  UC179921  Trifolium dubium Joseph P. Tracy 1914-7-4 4522 Humboldt between Korbel and Angels Ranch roadside; Northern Coast Ranges Comment
  HSC44835  Trifolium eriocephalum Thomas W. Nelson, Jane P. Nelson 1977-7-4 3603 Humboldt Along old trail N of Alder Spring 1555 Comment
  UC1223464  Trifolium eriocephalum var. eriocephalum Joseph P. Tracy 1949-8-4 18415 Humboldt toward Trinity Summit (Mud Springs, on rd from Hoopa) 1341 Comment
  HSC100533  Trifolium filipes Carl C. Marshall May 1886 411 Humboldt Dobbyn's Creek. Comment
  HSC100534  Trifolium fucatum Carl C. Marshall Mar 1886 18 Humboldt Hills. Comment
  POM214890  Trifolium gracilentum Joseph P. Tracy 1932-5-22 10124 Humboldt South fork of Eel River, between Miranda and Redway. Comment
  UC1197197  Trifolium gracilentum Joseph P. Tracy 1909-5-2 2965 Humboldt near Cutten and McDonald Tract; Eureka Comment
  CHSC98381  Trifolium howellii Dean Wm. Taylor; Tom Engstrom 2006-8-3 19574 Humboldt Snow Camp Lake; un-named first-order tributary to Redwood Creek not shown on USGS map 1 mile NE of the lake. 1249 Comment
  HSC31201  Trifolium longipes subsp. oreganum D. E. Anderson 1972-6-20 5757 Humboldt Along the N slope of Horse Mtn. Comment
  POM214885  Trifolium macraei Joseph P. Tracy 1927-6-8 8114 Humboldt Trinidad. 15 Comment
  HSC35028  Trifolium microcephalum Thomas W. Nelson, Jane P. Nelson 1975-5-24 1846 Humboldt McKeown Ranch, N of Dinsmore. Comment
  HSC38084  Trifolium microcephalum Thomas W. Nelson, Jane P. Nelson 1976-5-30 2606 Humboldt McKeown Ranch, N of Dinsmore. Comment
  HSC95073  Trifolium microdon Andrea Pickart 2002-7-3 154 Humboldt Lanphere Dunes: Big Dune, Lanphere Dunes Unit, Humboldt Bay National Wildlife Refuge 0 Comment
  HSC95594  Trifolium microdon Andrea Pickart 2002-5-13 102 Humboldt Lanphere Dunes Unit, Humboldt Bay National Wildlife Refuge 0 Comment
  RSA273375  Trifolium oreganum Thomas W. Nelson, Jane P. Nelson 1976-6-15 2711 Humboldt Along old trail from lookout to Blocksburg 1555 Comment
  UC1223311  Trifolium willdenovii Joseph P. Tracy 1934-4-8 13170 Humboldt betw Miranda and Redway South Fork of Eel River Comment
  UC1197511  Trifolium willdenovii Joseph P. Tracy 1932-5-17 10092 Humboldt Willow Creek Northern Coast Ranges, Trinity River Valley 152 Comment
  UC495692  Trifolium willdenovii Joseph P. Tracy 1932-6-14 10157 Humboldt Willow Creek Northern Coast Ranges, Trinity River Valley 152 Comment
  UCD109861  Trifolium willdenovii A. H. Murphy 1947-5-15 s.n. Humboldt In Klamath weed field, 3 miles south of Blocksburg. Comment
  HSC15194  Trifolium wormskioldii Norman H. Moe 1962-5-17 Humboldt Lanphere's Place. Comment
  UC573542  Trifolium wormskioldii H. S. Yates 1936-6-18 5723 Humboldt 2 mi s mouth of Littler River; Eureka quad 3 Comment
  HSC90318  Triglochin concinna Jean Hanson 1981-5-10 138 Humboldt Indian Island, Humboldt Bay, city of Eureka, W end of island Comment
  CAS-BOT-BC451803  Triglochin maritima Joseph P. Tracy 1933-8-22 12988 Humboldt Mouth of Eel River 3 Comment
  HSC59060  Triglochin maritima Thomas Wood 1979-5-4 154 Humboldt Big Lagoon Bog, N side, between the bog and the sea 0 Comment
  UC162705  Triglochin maritima Joseph P. Tracy 1911-6-25 3253 Humboldt Region about Humboldt Bay, at Bucksport Bucksport; Region about Humboldt Bay, Bucksport 0 Comment
  HSC75735  Trillium albidum Bill Copeland 1980-6-26 296 Humboldt Near Murphy Meadow 914 Comment
  RSA46966  Trillium albidum E. N. Crosby 1935-3-10 66 Humboldt Blue Lake Comment
  HSC101818  Trillium kurabayashii Kjirsten A. Wayman 2012-5-15 320 Humboldt Big Hill Road, 10.5 miles east of Hoopa, N 41.08892 W 123.56708 1368 Comment
  CAS-BOT-BC389696  Trillium ovatum Mary K. Wicksten 1972-3-8 39 Humboldt Arcata Comment
  JEPS47248  Trillium ovatum Lincoln Constance 1934-6-2 794 Humboldt Bull Creek road to mouth of Bull Creek and up Bull Creek; S. Fork Eel River, Bull Creek Region Comment
  UC1541275  Trillium ovatum W. K. Parks July 1933 Humboldt S. Fork Mountain Comment
  HSC15698  Trillium ovatum J. C. Reppas 1963-3-9 21 Humboldt 1.0 mi. from the Pony Farm and N Fickle Hill Rd. Comment
  HSC34635  Trillium ovatum Robert M. Specht 1975-4-9 125 Humboldt W of Seawood Drive exit of Hwy. 101, N of Trinidad Comment
  SD56735  Trillium ovatum Darley F. Howe 1963-5-26 Humboldt 3.7 miles east of Orick, on Bald Hill Road. 487 Comment
  JEPS2674 Image available Triphysaria eriantha subsp. eriantha Jos. P. Tracy 1901-5-18 2035 Humboldt Sandhills Humboldt Bay, Eureka; Eureka, Humboldt Bay Comment
Read comments
Oct 16 2007
  CHSC40207  Triphysaria pusilla L. P. Janeway 1984-5-13 772 Humboldt Along the Kneeland/ Bridgeville Road ca 11 mi east of the Kneeland post office. 566 Comment
  JEPS26252  Triphysaria versicolor subsp. versicolor J. P. Tracy 1900-6-25 863 Humboldt immediate vicinity Eureka; immed vicinity of Eureka 0 Comment
  HSC102548  Trisetum canescens M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-29 1536 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1579 Comment
  HSC99524  Trisetum canescens K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-22 187 Humboldt Near North Trinity Mtn, 11. 5 mi. E of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  POM126097  Trisetum canescens Joseph P. Tracy 1903-5-22 1877 Humboldt Alder Point on Eel River, in woods. Comment
  UC1056012  Trisetum canescens W. L. Colwell 1954-10-12 10 Humboldt 4 mi ne Blocksburg 1127 Comment
  UC526693  Trisetum canescens Joseph P. Tracy Jul 16 1930-Jul 19 1930 8916 Humboldt near McKay Camp; Northern Coast Ranges, South Fork Mountain 1676 Comment
  UC526695  Trisetum canescens Joseph P. Tracy 1927-6-19 8194 Humboldt Big Lagoon; Northern Coast Region 6 Comment
  HSC58671  Trisetum cernuum Gilbert Muth 1979-8-1 12147 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1677 Comment
  UC922032  Trisetum cernuum Joseph P. Tracy 1950-7-2 18962 Humboldt 6 mi ne Hawkins Bar (in woods at Fern Spring); Trinity Summit Range, Happy Camp Mountain 1280 Comment
  UCD93910  Trisetum cernuum Joseph P. Tracy 1940-8-11 16695 Humboldt Trinity River Valley, near Willow Creek. At Raccoon Creek. 152 Comment
  UC1103147  Trisetum flavescens Joseph P. Tracy 1917-7-1 4830 Humboldt Eureka; Northern Coast Ranges 0 Comment
  HSC3061  Triteleia laxa D. E. Anderson 1962-7-14 2251 Humboldt 2 mi. W of Kneeland Post Office Comment
  CAS-BOT-BC526349  Triteleia laxa Ira L. Wiggins 1932-6-18 5876 Humboldt Mouth of Little River Comment
  CAS-BOT-BC526357  Triteleia laxa L. R. Abrams 1918-6-14 7089 Humboldt Korbel to Three Creeks near March's ranch Comment
  HSC35965  Triteleia laxa Thomas W. Nelson, Jane P. Nelson, James Nelson 1975-6-21 1949 Humboldt Hwy. 36, 5 mi. E of Bridgeville Comment
  JEPS557  Triteleia laxa Joseph P. Tracy 1938-7-5 16001 Humboldt 5 mi e Carlotta (by old Strong's District School House) 45 Comment
  UC422834  Triteleia laxa P. E. Goddard 1907-5-29 b. 110 Humboldt Van Duzen Comment
  POM169620  Triteleia peduncularis Joseph P. Tracy 1903-6-12 1920 Humboldt Immediate vicinity of Eureka. 0 Comment
  HSC94180  Triticum aestivum Gordon Leppig, Kai Neander 2000-4-14 1293 Humboldt Arcata, E of the Community Center parking lot 3 Comment
  HSC13439  Triticum aestivum L. M. Malloy 1965-5-20 30 Humboldt Old county dump, 5 mi. from Arcata on Fickle Hill Rd. Comment
  CAS-BOT-BC85891  Tsuga heterophylla C. B. Wolf 1930-10-25 1019 Humboldt Along the Blue Lake to Willow Creek road (Lord Ellis Road), 12 mi. above Blue Lake 304 Comment
  RSA1916  Tsuga heterophylla C. B. Wolf 1930-10-25 1763 Humboldt 12 miles above Blue Lake along Blue Lake to Willow Creek Road (Lord Ellis Road). 305 Comment
  UCD135133  Tsuga heterophylla Linda M. Barker 1976-6-14 1589 Humboldt Lanphere-Christensen Dunes, coastal forest and dunes 3 miles west of Arcata. Comment
  UCD135134  Tsuga heterophylla Roman Gankin 1965-8-7 563 Humboldt Big Lagoon County Park. Comment
  UCR275103  Typha domingensis Charity A. Hartshorn 2016-4-24 20 Humboldt Arcata Marsh & Wildlife Sanctuary, east end of Klopp Lake 7 Comment
  UC1196280  Umbellularia californica Joseph P. Tracy 1924-8-31 6844 Humboldt Klamath River at Bluff Creek Klamath River; Northern Coast Ranges, , Bluff Creek 91 Comment
  CAS-BOT-BC404069  Urtica dioica subsp. holosericea Henry M. Pollard 1956-10-13 s.n. Humboldt Bank of Klamath River at Orleans Hotel, Orleans Comment
  HSC15307  Utricularia macrorhiza W. B. Strickland 1968-3-28 Humboldt McClellan Mtn. Rd., off Hwy. 36 above Bridgeville 457 Comment
  CAS-BOT-BC199324  Vaccinium ovatum L. R. Abrams 1918-6-16 7188 Humboldt Willow Creek Comment
  HSC13157  Vaccinium ovatum Steve Dorei 1970-10-8 7 Humboldt HSU campus, near corner of Union St. and st. leading to gyms Comment
  HSC90226  Vaccinium ovatum L. Watson, J. Meninga Mar 1991 20 Humboldt Near Manilla, Mad River Slough and Dunes N of parking lot, W of trail Comment
  RSA46803  Vaccinium ovatum Doris K. Kildale 1927-5-15 3189 Humboldt Big Lagoon Flat. Comment
  UC1174843  Vaccinium ovatum P. C. Everett and E. K. Balls 1959-10-26 23974 Humboldt 4 mi se Honeydew (along Old Coast Road to Ettersburg) 457 Comment
  UCD118072  Vaccinium ovatum Linda M. Barker 1976-4-30 1423 Humboldt 3 miles west of Arcata. Comment
  UCD166926  Vaccinium ovatum Colleen Rossier 2016-9-19 10 Humboldt In vicinity of Fish Lake, plot Fish Lake #2. 541 Comment
  UCSB27859  Vaccinium ovatum Phelps, M. 1972-3-19 Humboldt South end of Elk Ridge, approx. 2.5 mi. north of Briceland 457 Comment
  HSC37332  Vaccinium parvifolium Gary S. Lester, Roger L. Yearout, Judith G. Dickson 1974-7-24 477 Humboldt Along Lost Man Creek. 38 Comment
  SEINET3107075  Vaccinium parvifolium Steve Selva, Roger Jensen 1974-8-28 97 Humboldt Redwood forest behind Humboldt State University, Arcata. Comment
  UC1197777  Vaccinium parvifolium Joseph P. Tracy 1925-2-15 6937 Humboldt Eureka Northern Coast Ranges 0 Comment
  UC1225909  Vaccinium parvifolium Joseph P. Tracy 1943-3-14 17410 Humboldt Vicinity Carlotta 30 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
  UC1239583  Valeriana sitchensis subsp. scouleri Mrs. Archie Cathey 1933-5-6 Humboldt Eel Rock 91 Comment
  UC1239584  Valeriana sitchensis subsp. scouleri Mrs. R. D. Douglass 1919-5-8 Humboldt near Ferndale; Nothern Coast Region Comment
  UC854707  Vancouveria hexandra Elizabeth Parsons Hawver June 1915 Humboldt Carlotta Comment
  HSC69623  Vancouveria hexandra R. Kalal 1979-5-20 68 Humboldt Fickle Hill Rd., 1 mi. E of 11th St. 189 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-BC76093  Vancouveria planipetala M. S. Jussel 1931-5-2 113 Humboldt Garberville. Comment
  JEPS33032  Vancouveria planipetala Lincoln Constance 1934-5-23 603 Humboldt s slope of mt. above Look Prairie Bull Creek area (Bull Creek area); , above Look Prairie 365 Comment
  CAS-BOT-BC135775  Veratrum insolitum Carl B. Wolf 1934-7-3 5920 Humboldt 19 1/2 mi. from Martin's Ferry on Orick Rd. 304 Comment
  HSC15732  Veratrum insolitum L. K. Weld 1967-7-17 22 Humboldt 0.5 mi. SE of Indian Field Ridge off Hwy. 299 Comment
  UC582590  Verbascum blattaria Joseph P. Tracy 1937-6-26 15366 Humboldt Trinity River Valley at Willow Creek; Trinity River Valley at Willow Creek 152 Comment
  HSC27420  Verbena lasiostachys Thomas W. Nelson 1970-9-3 213 Humboldt Mad River. Comment
  UC154273  Verbena lasiostachys var. lasiostachys Harley P. Chandler June, 1901 1353 Humboldt Hupa Indian Reservation 152 Comment
  HSC75284  Verbena menthifolia J. O. Sawyer, D. A. Thornburgh 1980-9-9 4084 Humboldt Mill Creek Lake and surrounding meadows Comment
  UC902233  Veronica arvensis Joseph P. Tracy 1942-5-16 17345 Humboldt Garberville 152 Comment
  HSC39612  Veronica serpyllifolia subsp. humifusa Thomas W. Nelson, Jane Nelson 1976-6-15 2716 Humboldt Along old trail from lookout to Blocksburg 1585 Comment
  POM283765  Veronica serpyllifolia var. humifusa Lyman D. Benson 1928-7-12 478 Humboldt Weott Ranger Station. Seaward N Coast mtn range. S Fork Eel River. 61 Comment
  HSC56369  Vicia americana var. americana Terry Griswold, Butler 1979-7-11 6390 Humboldt Near Snow Camp Mountain 1320 Comment
  JEPS66158  Vicia benghalensis Joseph P. Tracy 1924-6-28 6701 Humboldt Hydesville; Northern Coast Ranges 91 Comment
  UCSB16530  Vicia hirsuta Breedlove, Dennis 1961-7-4 Humboldt North bank of the Mad River, 1 mile east of Blue Lake on U.S. Highway 299 243 Comment
  RSA755060  Vicia sativa subsp. nigra Robert F. Thorne, Percy C. Everett 1965-8-8 35241 Humboldt N edge of Eureka, E of Hwy. 101 5 Comment
  HSC3233  Vinca major S. R. Johnson 1965-3-23 16 Humboldt 1 mi. N of Luffenholtz Beach Comment
  CAS-BOT-BC263944  Viola adunca Mrs. H. E. Wilder 1924-5-26 s.n. Humboldt Carlotta Comment
  HSC21769  Viola adunca Wm. F. Bowman 1968-10-26 Humboldt Big Lagoon Co. Park, SW corner of Big Lagoon; side of road near parking lot Comment
  HSC21774  Viola adunca K. P. St. John 1965-4-3 10 Humboldt Dry Lagoon State Park, 13 mi. N of Trinidad Comment
  UC66217  Viola bakeri Joseph Burtt Davy Jun 21 1899-Jun 23 1899 5805 Humboldt Trinity Summit Comment
  RSA256721  Viola cuneata D. E. Anderson 1972-6-20 5749 Humboldt Along the Redwood Valley-Hoopa Rd. east of the summit. Comment
  CAS-BOT-BC536497  Viola glabella W. R. Dudley 1899-6-19 s.n. Humboldt Shady Run -- Scotia Comment
  RSA218475  Viola glabella N. H. Russell 1960-6-9 60 -24 Humboldt Near Weott and Williams Grove, by Hwy 101. Comment
  UC1762124  Viola glabella Milo S. Baker 1926-7 145 -26 Humboldt S. Fork Mt., 5 mi from hwy Comment
  RSA135420  Viola hallii Volney Rattan 1882-06 s.n. Humboldt Kneeland Prairie. Comment
  UC275333  Viola ocellata Joseph P. Tracy 1924-3-30 6629 Humboldt 3 mi w of Bridgeville (apparently its western limit, Van Duzen River (not in redwood belt)); Northern Coast Ranges, Van Duzen River 182 Comment
  HSC49627  Viola odorata R. York 1979-4-13 218 Humboldt College Cove, 1 mi N of Trinidad Comment
  HSC48776  Viola palustris Brad Klipfel 1974-4-27 341 Humboldt Along the SW side of Big Lagoon Comment
  JEPS50263  Viola palustris Joseph P. Tracy 1923-5-31 6242 Humboldt Northern Coast Ranges, Eurkea Eurkea; Northern Coast Ranges, Eurkea 0 Comment
  UC183743  Viola purpurea subsp. quercetorum Joseph P. Tracy 1913-6-17 4149 Humboldt on nw slope of Buck Mountain (Burr Balley); Northern Coast Ranges, Burr Valley, Buck Mountain 1066 Comment
  UC1198427  Viola sempervirens Joseph P. Tracy 1921-3-20 5424 Humboldt Blue Slide on Van Duzen River; Northern Coast Region, , Blue Slide 91 Comment
  UC183557  Viola sempervirens Joseph P. Tracy 1913-6-20 4221 Humboldt in valley of Van Duzen River (opposite Buck Mountain, Dinsmore's Ranch); Northern Coast Ranges, Dinsmore's Ranch 762 Comment
  POM92419  Vitis californica L. R. Abrams 1922-6-25 8220 Humboldt 6 miles N of Garberville Comment
  RSA54148  Vitis vinifera H. M. Pollard 1945-9-4 s.n. Humboldt Near Camp Creek, Klamath River Canyon. Comment
  UCD93456  Vulpia bromoides A. A. Beetle; G. L. Stebbins Jr., J. P. Tracy 1942-6-2 3459 Humboldt near Loleta Swamp, south of Eureka. Comment
  UCD93706  Vulpia microstachys H. S. Yates 1936-6-17 5712 Humboldt near Burr Valley. 914 Comment
  UC212886  Vulpia microstachys var. microstachys Joseph P. Tracy 1919-5-31 5161 Humboldt near Willow Creek (hillslopes at the w side of Trinity River); Northern Coast Ranges, Trinity River 152 Comment
  HSC70350  Vulpia myuros M. A. Baker 1980-6-7 1810 Humboldt Near Brush Mtn. 1128 Comment
  HSC70921  Vulpia myuros R. York 1980-5-18 570 Humboldt Near Black Mountain 792 Comment
  CAS-BOT-BC185939  Vulpia octoflora var. octoflora Joseph P. Tracy 1929-7-4 8618 Humboldt French Camp Ridge 1066 Comment
  HSC104099  Whipplea modesta Monica Rodriguez, William A. Worley 2015-4-11 27 Humboldt Rock Creek Ranch property; along South Fork Rd, 8.2 mi. from 199 Redwood Hwy. 134 Comment
  HSC20441  Whipplea modesta D. E. Anderson 1962-5-1 2197 Humboldt 2 mi. W of Hoopa Comment
  HSC98362  Whipplea modesta T. Jimerson, J. Pageau 1979-6-12 528 Humboldt Near Hopkins Butte, close to the town of Orleans. 1036 Comment
  SDSU911  Whipplea modesta D. F. Howe 1961-8-2 3121 Humboldt 7.7 Miles east of Orick on Bald Mtn. Road. 610 Comment
  HSC27889  Woodwardia fimbriata Clifton Raymond Chesbrough 1973-6-19 71 Humboldt 0.25 mi. from Harris and T St. on U St. Comment
  JEPS60110  Woodwardia fimbriata Lincoln Constance 1934-6-2 784 Humboldt S Fork Eel River; Bull Creek Region Comment
  CAS-BOT-BC77814  Woodwardia fimbriata Kenneth Clark 1980-6-14 678 Humboldt north fork Dead Man's Gulch 83 Comment
  RSA46704  Woodwardia fimbriata Doris K. Kildale 1928-12-29 6762 Humboldt Stevens Grove Comment
  HSC63840  Wyethia angustifolia M. A. Baker 1979-6-26 908 Humboldt S facing ridge Comment
  JEPS109808  Wyethia longicaulis Dean W. Taylor 2004-6-24 19132 Humboldt Horse Mountain, along Titlow Hill Road 0.4 miles north from the junction with the road to the mountain summit 1310 Comment
  JEPS32115  Wyethia longicaulis Jos. P. Tracy 1923-6-21 4254 Humboldt near summit of ridge between Van Duzen and Mad Rivers (Dinsmore Ranch) 1066 Comment
  UC419036  Wyethia longicaulis H. E. Parks May 1930 740 Humboldt Laribee Valley Comment
  HSC15736  Xerophyllum tenax D. E. Anderson 1965-6-1 3774 Humboldt On ridge along Friday Hill Rd., about 2 mi. from its junction with Titlow Hill Rd. 1159 Comment
  HSC76424  Xerophyllum tenax Denis Kearns 1981-6-24 29 Humboldt Near Cedar Camp 1219 Comment
  HSC98549  Xerophyllum tenax Cara Witte 2008-6-11 711 Humboldt National Forest Road 5N10. 2 miles south of intersection with Forest Service Road 5N41. 1286 Comment
  HSC79498  Zeltnera muehlenbergii Kenneth Clark 1979-7-1 454 Humboldt Shelter Cove, Dead Man's Gulch 9 Comment
  CAS-BOT-BC532736  Zigadenus micranthus Volney Rattan 1878-1-1 s.n. Humboldt Unspecified Comment
  UC249566  Zigadenus micranthus var. micranthus Joseph P. Tracy 1921-5-30 5484 Humboldt Kneeland Prairie Northern Coast Ranges, Kneeland Prairie 762 Comment
  CAS-BOT-BC534318  Zigadenus venenosus var. venenosus Carl B. Wolf 1937-6-14 8817 Humboldt North Coast Range, Kneeland Prairie 822 Comment
  HSC59463  Zostera marina M. A. Ericksen 1979-5-18 294 Humboldt Humboldt Bay, 50 yds. N of Arcata Redwood Company between Arcata and Eureka Comment



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