Search Results — 2000 specimen records retrieved (1380 records with coordinates)
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(For large data reqests, please contact Jason Alexander, jason_alexander@berkeley.edu.)

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

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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  HSC54516  Abies concolor Overton, Butler 1979-7-23 9432 Humboldt Near Horse Mtn., close to the town of Willow Creek 1478 Comment
  HSC55072  Abies concolor G. L. Clifton, Griswold 1979-7-31 11656 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1719 Comment
  HSC55196  Abies concolor G. L. Clifton, Griswold 1979-8-2 12292 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  UC502913  Abies concolor Joseph P. Tracy 1927-6-12 8144 Humboldt Horse Mountain 1524 Comment
  HSC101445  Abies concolor var. lowiana Cara M. Witte 2008-6-13 719 Humboldt Forest Service Road 4N32. 1/2 mile north of intersection with Forest Service Road 4N32B 1417 Comment
  CAS-BOT-BC78057  Abies grandis Doris K. Kildale 1927-2-21 2958 Humboldt Bucksport, back of cemetery 30 Comment
  UC72493  Abies grandis H. P. Chandler 1905-5-3 Humboldt Eureka Comment
  HSC12834  Abies magnifica Thomas W. Nelson, Wilbur Peterson 1970-12-2 296 Humboldt HSC Campus, W side of tennis court Comment
  HSC73024  Abies procera Gail Newton 1980-8-10 1987 Humboldt Near Blake Mtn. 1798 Comment
  HSC73071  Abies procera M. A. Baker 1980-7-22 3063 Humboldt Near Salmon Mtn. 1820 Comment
  RSA168959  Abies procera G. L. Anderson 1962-8-21 5 Humboldt Six Rivers National Forest; Horse Trail Ridge, SW slope. 1829 Comment
  CHSC68786  Abronia latifolia Vernon Oswald 1997-6-5 8536 Humboldt North spit of Humboldt Bay, west side of New Navy Base Rd. 1.0 mi south of Hwy. 255. 6 Comment
  HSC59192  Abronia latifolia Terry Roth 1979-5-24 79 Humboldt Samoa Dunes near the U.S. Coast Guard Station 5 Comment
  HSC59462  Abronia latifolia M. A. Ericksen 1979-5-18 295 Humboldt Samoa Dunes, .5 mi. S of Simpson Timber Company plant entrance Comment
  OBI35878  Abronia latifolia David J. Keil 1983-7-1 17287 Humboldt Ca. 5 mi NW of Petrolia along Mattole Rd Comment
  HSC16130  Abronia latifolia I. L. Wiggins 1932-7-19 5888 Humboldt Near Clam Beach, 8 mi. N of Arcata Comment
  HSC75231  Abronia umbellata var. breviflora D. M. Gordon 1982-9-23 Humboldt Lanphere-Christensen Dunes, 3 mi. W of Arcata. Comment
  CAS-BOT-BC436976  Acaena novae-zelandiae T. C. Fuller 1966-10-4 15236 Humboldt 1 mile northwest of Fieldbrook Comment
  CAS-BOT-BC436985  Acaena novae-zelandiae D. W. Cooper 1967-6-30 s.n. Humboldt On ridge just southeast of Forest Service Nursery, ca. 2 miles southeast of Crannell and ca. 4 miles east of U.S. Highway 101 Comment
  CDA40634  Acaena novae-zelandiae T. C. Fuller 1966-10-4 15236 Humboldt 1 mile northwest of Fieldbrook. 0 Comment
  SD42321  Acer glabrum Carl B. Wolf 1937-9-13 93360 Humboldt Clear Lake between Horse Mtn. and Grouse Mtn. 1525 Comment
  UC1222158  Acer glabrum var. glabrum Joseph P. Tracy 1950-7-1 18947 Humboldt near Clear Lake (back of Cold Springs, Cold slope); Grouse Mountain, at Cold Springs, near Clear Lake 1432 Comment
  HSC76199  Acer glabrum var. torreyi Overton, Butler 1979-8-2 12507 Humboldt Near Bret Hole, close to the town of Hoopa 1554 Comment
  CAS-BOT-BC331589  Acer macrophyllum Doris K. Kildale 1927-5-1 3117 Humboldt Blocksburg 518 Comment
  CAS-BOT-BC331590  Acer macrophyllum Joseph Andorfer Ewan 1937-7-1 10435 Humboldt Stephan Grove on Eel River, N of Garberville Comment
  HSC12932  Acer macrophyllum C. E. Fellows 1970-11-9 351 Humboldt HSC Campus, S side Bio Greenhouse Comment
  JEPS42656  Acer macrophyllum W. L. Jepson 1902-6-19 1887 Humboldt Ft. Seward Ranch Ridge Ft. Seward Ranch Ridge (= Mail Ridge) ((= Mail Ridge)) 1219 Comment
  UCD170788  Acer macrophyllum Gordon Leppig 1998-5-7 750 Humboldt Quarry Rd. off Jacoby Creek. At Jacoby Creek Bridge. 97 Comment
  CDA23775  Acer negundo var. californicum Jeanette N. Griffin 2008-8-28 s.n. Humboldt Ferndale 0 Comment
  CAS-BOT-BC28585  Achillea millefolium Doris Kildale Gillespie 1931-6-7 s.n. Humboldt South Fork Mountain, Blake Lookout 1726 Comment
  HSC37962  Achillea millefolium Peter Sorensen 1976-6-12 Humboldt Woodley Island Comment
  HSC57890  Achillea millefolium Overton, Butler 1979-7-31 11450 Humboldt Near Water Dog Lakes, close to the town of Hoopa 1830 Comment
  HSC58064  Achillea millefolium G. L. Clifton, Griswold 1979-8-1 11941 Humboldt Near Mill Creek Lakes, close to the town of Hoopa. 1692 Comment
  HSC67891  Achillea millefolium J. P. Smith 1973-5-26 6797 Humboldt Scotia Bluffs along the Eel River near Rio Dell Comment
  HSC102055  Achlys californica M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-13 960 Humboldt Along trail from Rustic Camp to Patterson Meadows 1534 Comment
  UC1225749  Achlys californica Joseph P. Tracy 1946-6-23 17594 Humboldt Kneeland Prairie 762 Comment
  HSC74572  Achlys triphylla M. A. Baker 1980-5-17 1190 Humboldt Near Le Perron Peak 792 Comment
  SFV5403  Achlys triphylla J. Turner, F. M. Ball 1962-7-10 s. n. Humboldt East Fork Willow Creek Forest Camp. Highway 299 about 5 miles west of Willow Creek. 457 Comment
  HSC3342  Achlys triphylla Jack Rockwell 1962-4-29 36 Humboldt S Bank of Van Duzen River, E of Hwy. 101 9 Comment
  HSC34876  Achlys triphylla Thomas W. Nelson 1975-5-5 1778 Humboldt Beside Hwy. 101, 4 mi. S of the Salmon Creek bridge Comment
  CAS-BOT-BC210656  Achnatherum lemmonii Joseph P. Tracy 1927-5-14 8000 Humboldt Trinity River Valley, near the South Fork 182 Comment
  UCD55568  Achnatherum lemmonii W. Robert Powell 1958-7-10 s.n. Humboldt 6 miles northeast of Lord Ellis Summit. 1158 Comment
  SEINET201042  Achnatherum occidentale subsp. californicum J. P. Tracy 1932-7-12 10446 Humboldt Trinity Summit; Corral Prairie 1524 Comment
  RSA168919  Aconitum columbianum Joseph P. Tracy 1950-7-31 19242 Humboldt NE side of top of Grouse Mtn Comment
  CAS-BOT-BC391412  Aconitum columbianum subsp. columbianum Carl B. Wolf 1937-8-13 9249 Humboldt North Coast Range, 11 mi. E. of Hoopa Valley on New Road towards Trinity Summit 1524 Comment
  HSC56019  Aconitum columbianum subsp. columbianum Gilbert Muth 1979-7-31 11519 Humboldt Near Tish Tang A Tang Creek, S Fork, close to the town of Hoopa 1417 Comment
  CAS-BOT-BC418767  Aconogonon phytolaccifolium Doris K. Kildale 1925-9-1 1368 Humboldt Eureka Comment
  JEPS60388  Actaea rubra Lincoln Constance 1934-6-1 771 Humboldt Bull Cr. rd. between Dyerville Bridge and Bull Cr. flat grove (mouth of Bull Creek) mouth of Bull Creek; Bull Creek Region, S. Fork Eel R. 45 Comment
  HSC4593  Adenocaulon bicolor Lincoln Constance 1934-5-29 734 Humboldt Upper Look Prairie; South Fork Eel River 366 Comment
  CAS-BOT-BC62296  Adiantum aleuticum J. H. Thomas 1949-6-12 903 Humboldt Under bridge on Boyce Creek, near Klamath River (near town of Orleans) Comment
  HSC79503  Adiantum aleuticum Kenneth Clark 1980-6-14 691 Humboldt Shelter Cove, N fork of Dead Man's Gulch 84 Comment
  CAS-BOT-BC65624  Adiantum jordanii Joseph P. Tracy 1895-9-1 6868 Humboldt near Pepperwood 30 Comment
  UCSB29304  Adiantum jordanii Phelps, M. 1972-3-23 Humboldt 1.5mi from Garberville, along Old Briceland Rd., 1000 yards N of roadside 213 Comment
  HSC34286  Agastache urticifolia K. Irwin 1975-8-16 Humboldt Grogans Hole area. Comment
  SEINET11854879  Agoseris apargioides J. P. Tracy 1949-1 18441 Humboldt Near Box Camp. Trinity Summit, meadow at Box Camp 1463 Comment
  HSC74690  Agoseris grandiflora Gail Newton 1981-8-7 2464 Humboldt Near Board Camp Mtn. 1478 Comment
  SEINET11854998  Agoseris grandiflora J. P. Tracy 1942-1 17276 Humboldt Garberville. North end of town Comment
  SEINET202623 Image available Agoseris grandiflora Joseph P. Tracy 1942-7-18 17275 Humboldt Garberville north end of town. Comment
  SEINET202732 Image available Agoseris grandiflora Joseph P. Tracy 1945-7-15 17513 Humboldt Trinty River Valley at Willow Creek. 152 Comment
  UC1222942  Agoseris grandiflora Joseph P. Tracy 1948-8-8 18093 Humboldt Iaqua School House Iaqua Comment
  UC1222935  Agoseris grandiflora var. grandiflora Joseph P. Tracy 1951-6-24 19535 Humboldt Kneeland Prairie Kneeland Prairie 762 Comment
  UC1222934  Agoseris grandiflora var. grandiflora Joseph P. Tracy 1942-6-15 17146 Humboldt n end Garberville Comment
  UC165754  Agoseris heterophylla var. heterophylla Joseph P. Tracy 1909-8-1 3070 Humboldt edge of grain field Kneeland Prairie; Northern Coast Ranges 762 Comment
  UC275457  Agoseris heterophylla var. heterophylla Joseph P. Tracy 1925-5-30 7019 C Humboldt Bridgeville; Northern Coast Ranges 228 Comment
  JEPS71135  Agrostis alba W. L. Jepson 1936-8-17 17923 Humboldt 2 1/2 mi s Fields Landing Comment
  UC526887  Agrostis alba Joseph P. Tracy 1927-8-7 8326 Humboldt moist ground by Lack Pond; Northern Coast Ranges, Trinity River Valley 152 Comment
  RSA129700  Agrostis capillaris H. S. Yates 5685 Humboldt Near Bayside 9 Comment
  HSC8779  Agrostis densiflora D. E. Anderson 1965-9-5 4073 Humboldt Along Mad River, 3 mi. S of Blue Lake Comment
  CAS-BOT-BC127251  Agrostis exarata Harley P. Chandler 1901-6-1 1512 Humboldt North Coast Ranges. Klamath River. 426 Comment
  JEPS75421  Agrostis exarata W. L. Jepson 1932-7-30 16451 Humboldt in redwood forest Bull Creek 121 Comment
  POM160889  Agrostis exarata Joseph P. Tracy 1918-7-21 5085 Humboldt Around Humboldt Bay. Humboldt Hill 91 Comment
  RSA10027  Agrostis exarata Joseph P. Tracy 1932-7-14 10550 Humboldt Corral Prairie 1524 Comment
  SEINET3916252  Agrostis exarata H. E. Parks, S. T. Parks 1952-1 7553 Humboldt Spruce Cove, Trinidad.; 0 61 Comment
  LA10251  Agrostis exarata var. exarata H. E. Parks; June 1935 5607 Humboldt Spruce Cove, Trinidad Comment
  CAS-BOT-BC139503  Agrostis hallii A. G. Vestal 1937-6-14 s.n. Humboldt Along Redwood Highway 14 miles south of Garberville. Comment
  UC1103526  Agrostis hallii Joseph P. Tracy 1912-7-31 3893 Humboldt nw slope Buck Mountain (Burr Valley); Northern Coast Ranges, nw slope Buck Mountain 1066 Comment
  RSA10064  Agrostis humilis Joseph P. Tracy 1930-7-16 8989 Humboldt South Fork Mountain: at McKay Camp 1677 Comment
  HSC98707  Agrostis idahoensis Cara Witte 2007-7-25 586 Humboldt Forest Service Road 5N04. 1/2 mile east of intersection with Forest Service Road 4N70. Grouse Mountain Lookout. 1583 Comment
  UC1103394  Agrostis idahoensis Joseph P. Tracy 1935-7-27 14279 Humboldt Corral Prairie Trinity Summit, Corral Prairie 1584 Comment
  SEINET200941  Agrostis longiligula Joseph P. Tracy 1924-1 6729 Humboldt Big Lagoon 6 Comment
  HSC35455  Agrostis microphylla J. D. Ackerman 1975-8-2 603 Humboldt Intersection of Indianola Cutoff and US Hwy 101. 3 Comment
  UC1145152  Agrostis microphylla Joseph P. Tracy 1938-7-5 16006 Humboldt 5 mi e town (Carlotta, open flat by old Strong's District School House); Carlotta, old Strong's District School House 60 Comment
  UC1103395  Agrostis oregonensis Joseph P. Tracy 1941-8-24 17039 Humboldt wet meadow near McKay Camp; South Fork Mountain 1676 Comment
  UC1145064  Agrostis oregonensis Joseph P. Tracy 1937-7-29 15582 Humboldt near McKay Camp; South Fork Mountain 1676 Comment
  UC1145065  Agrostis oregonensis Joseph P. Tracy 1950-7-31 19243 Humboldt swampy places near summit; Grouse Mountain 1615 Comment
  CDA20604  Agrostis pallens B. Freeman 2005-8-1 PDR 1368990 Humboldt North Coast; Big Lagoon. 0 Comment
  POM207333  Agrostis pallens Davy Blasdale 1899-05 5723 Humboldt Supply Creek Comment
  UCD53535  Agrostis stolonifera R. Tofsrud 1948-9-1 s.n. Humboldt Salmon Creek Ranch, about 8 miles S. of Eureka. Comment
  HSC58825  Agrostis thurberiana Walter Overton 1979-8-1 12399 Humboldt Near Mill Creek, Middle Fork, close to the town of Hoopa. 1341 Comment
  UC526890  Agrostis viridis Joseph P. Tracy 1926-7-4 7697 Humboldt near South Fork; Northern Coast Ranges, Trinity River Valley 182 Comment
  HSC8851  Aira caryophyllea H. E. Parks, S. T. Parks Jun 1936 5850 Humboldt Spruce Cove, Trinidad Comment
  UC526681  Aira caryophyllea Joseph P. Tracy 1927-6-19 8199 Humboldt Big Lagoon Northern Coast Region 6 Comment
  HSC8870  Aira praecox H. E. Parks 1938-6-20 24111 Humboldt Spruce Cove, Trinidad Comment
  CAS-BOT-BC460755  Allium amplectens Alice Eastwood; John Thomas Howell 1937-6-23 4832 Humboldt Near Yager Comment
  HSC97940  Allium falcifolium Cara Witte 2007-5-23 86 Humboldt Approximately 2 miles from intersection with 4N70 (Grouse Mountain Lookout Road) on 4N32. 1395 Comment
  RSA183583  Allium falcifolium D. E. Anderson 1965-6-1 3762 Humboldt Horse Mountain. 1433 Comment
  SEINET199679  Allium falcifolium J. P. Tracy 1933-7-11 12658 Humboldt Horse Mtn 1433 Comment
  SEINET199672  Allium watsonii Joseph P. Tracy 1932-7-12 10484 Humboldt Trinity Summit, Head of Brett Hole. 1829 Comment
  CAS-BOT-BC171313  Alnus incana subsp. tenuifolia Joseph P. Tracy 1927-8-22 8335 Humboldt Bald Mountain; In cold wet meadow near High Prairie 1066 Comment
  HSC37963  Alnus rubra Peter Sorensen 1976-6-12 Humboldt Woodley Island Comment
  HSC59200  Alnus rubra Terry Roth 1979-5-24 76 Humboldt Union St. near 11th St. Comment
  RSA24390  Alnus rubra C. B. Wolf 1941-2-22 9917 Humboldt Along Redwood Highway 2.8 miles south of Patricks Point State Park 30 Comment
  RSA2929  Alnus rubra C. B. Wolf 1931-8-28 2366 Humboldt Redwood Highway 4.5 miles no. of Fortuna on road to Eureka. 15 Comment
  CAS-BOT-BC169377  Alnus viridis subsp. sinuata Joseph P. Tracy 1930-7-16 9080 Humboldt Cool damp place along stream. S Fork Mountain, near McKay Camp 1676 Comment
  UC54760  Alnus viridis subsp. sinuata Joseph Burtt Davy and Walter C. Blasdale 1899-5 5778 Humboldt Trinity Summit North Coast Ranges (Mendocino, Humboldt, and Del Norte Counties) Comment
  UC573793  Alopecurus pratensis H. L. Person 1932-5-11 Humboldt Redwood Hwy. between Arcata and Eureka; Eureka Quad. 0 Comment
  HSC5663  Ambrosia chamissonis D. E. Anderson 1961-9-2 1771 Humboldt 3 mi. S of Cape Mendocino. 3 Comment
  UC665538  Ambrosia chamissonis H. E. Parks 1941-9-1 24214 Humboldt sandy beaches at mouth Little River Comment
  CAS-BOT-BC142893  Amelanchier alnifolia var. semiintegrifolia Volney Rattan 1878-1-1 s.n. Humboldt Unspecified Comment
  UC14177  Amelanchier alnifolia var. semiintegrifolia W. C. Blasdale 1896-6-6 Humboldt Fitzgeralds Comment
  HSC56096  Amelanchier pallida G. L. Clifton 1979-7-31 11803 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  UC154234  Amelanchier utahensis J. P. Tracy 1909-5-2 2953 Humboldt immediate vicinity Eureka 0 Comment
  UC466773  Amelanchier utahensis P. E. Goddard 1901-7-12 77 Humboldt Hupa Comment
  CAS-BOT-BC137866  Ammophila arenaria David D. Keck; J. Clausen 1935-6-16 3387 Humboldt Mouth of Little River. Comment
  UC584207  Ammophila arenaria David D. Keck and J. Clausen 1935-6-16 3387 Humboldt Mouth of Little River Little River Comment
  HSC45082  Amsinckia retrorsa R. Sutherland 1978-4-24 12 .24478 Humboldt Kinsey Ridge; base of cliff 323 Comment
  HSC17832  Anagallis arvensis Allan R. Marshall 1962-5-5 4 Humboldt Along N Fork of Mad River at Camp Bauer 76 Comment
  CAS-BOT-BC45137  Anaphalis margaritacea Doris K. Kildale 1926-8-8 2476 Humboldt Dyerville Bridge 45 Comment
  HSC49064  Anaphalis margaritacea Patricia Shesgreen 1978-8-2 125 Humboldt Arcata Community Forest, Arcata; 200 yds. N of field house on top of hill overlooking baseball field Comment
  RSA416575  Anaphalis margaritacea C. B. Wolf 1937-8-13 9213 Humboldt North Coast Range, 9 miles NE of Blue Lake on Lord Ellis Road. 244 Comment
  HSC56146  Anemone deltoidea G. L. Clifton, Griswold 1979-8-1 11975 Humboldt Near Mill Creek Lakes, close to the town of Hoopa 1707 Comment
  HSC18007  Anemone deltoidea J. F. Knezevich 1968-5-13 427 Humboldt Near Arcata above Freshwater Forest Comment
  HSC22553  Anethum graveolens Paul Shields Sep 1955 Humboldt 1 mi. S of Weott Comment
  HSC76205  Angelica arguta Overton, Butler 1979-8-2 12536 Humboldt Near Bret Hole, close to the town of Hoopa 1554 Comment
  HSC71410  Angelica hendersonii J. M. DiTomaso 1980-8-3 1831 Humboldt Big Lagoon State Park, S end, 50m N of boat ramp, 40m from Lagoon Comment
  HSC71436  Angelica hendersonii J. M. DiTomaso 1980-7-29 1798 Humboldt Elkshead, 2 mi N of Trinidad Comment
  SEINET3472178  Angelica hendersonii Unknown 1956-8-29 1967 Humboldt North of Eureka, North of Eureka, near Orick Comment
  UC1197332  Angelica lucida Joseph P. Tracy 1941-8-3 16977 Humboldt at w foot of Table Bluff Table Bluff 6 Comment
  HSC70546  Angelica tomentosa M. A. Baker 1980-7-19 3025 Humboldt Near Bret Hole. 1814 Comment
  CAS-BOT-BC271451  Anisocarpus madioides Henry M. Pollard 1948-7-23 s.n. Humboldt Perch Creek canyon, near Orleans Comment
  HSC102080  Antennaria media M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 982 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  HSC82122  Antennaria microphylla Thomas W. Nelson 1979-7-11 4998 Humboldt N Trinity Mtn. and ridge to E. 1829 Comment
  SEINET200721 Image available Antennaria rosea J. P. Tracy 1939-8-6 16397 Humboldt Shore of Big Lagoon 3 Comment
  UC1222876  Antennaria suffrutescens Joseph P. Tracy 1947-7-9 17864 Humboldt Horse Mountain 1432 Comment
  UCR48595  Anthemis cotula R. D. Goeden, Don W. Ricker 1987-9-2 870902- 13 Humboldt Loleta, along Cannibal Road 8 Comment
  UC922012  Anthoxanthum odoratum Joseph P. Tracy 1948-6-13 18046 Humboldt Dobbyn Creek 152 Comment
  UCD56274  Anthoxanthum odoratum J. W. McClellan 1924-5-26 s.n. Humboldt from Bridgeville. Comment
  UC1196738  Antirrhinum vexillocalyculatum subsp. breweri Joseph P. Tracy 1900-9-9 955 Humboldt near Hydesville (gravel bar of Yager Creek); Northern Coast Region, Yager Creek 60 Comment
  UC1196739  Antirrhinum vexillocalyculatum subsp. breweri Joseph P. Tracy 1946-11-17 17665 Humboldt Eel River at mouth of Van Duzen River; Eel River 18 Comment
  CAS-BOT-BC447667  Aphanes arvensis J. P. Tracy 1901-5-5 1072 Humboldt Immediate Vicinity of Eureka 152 Comment
  HSC40265  Aphanes occidentalis Linda M. Barker 1976-4-30 1413 Humboldt 3 mi. W of Arcata Comment
  HSC57660  Apocynum androsaemifolium G. L. Clifton, Griswold 1979-7-25 10835 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1814 Comment
  RSA46787  Aquilegia formosa Doris Kildale Gillespie 1937-8-12 15265 Humboldt South Fork Mountain. Comment
  UC184781  Aquilegia formosa Joseph P. Tracy 1912-6-2 3643 Humboldt Eureka Northern Coast Region 0 Comment
  HSC53858  Arabis glabra Griswold, Butler 1979-7-10 6329 Humboldt Near Board Camp Mtn., close to the town of Willow Creek 1372 Comment
  HSC3251  Aralia californica D. E. Anderson 1962-9-14 2337 Humboldt Fish Lake area Comment
  RSA21581  Aralia californica C. B. Wolf 1937-9-8 s.n. Humboldt North Coast Range, Bull Creek- Petrolia Road, 12 mi W of Redwood Highway 457 Comment
  CAS-BOT-BC128699  Arbutus menziesii Doris K. Kildale 1927-4-17 3091 Humboldt Briceland Bridge 1/2 mile west of Garberville 114 Comment
  UC1196882  Arbutus menziesii Joseph P. Tracy 1941-3-26 16847 Humboldt w of mouth of South Fork Trinity River 457 Comment
  UC915722  Arbutus menziesii W. L. Jepson 1903-6-23 50 Humboldt near Briceland Comment
  CAS-BOT-BC407747  Arceuthobium abietinum Doris K. Kildale 1926-9-5 2634 Humboldt Lasseck's Peaks, between Goat Camp and Signal Peak 1661 Comment
  UC1198673  Arctostaphylos Joseph P. Tracy 1937-4-3 15248 Humboldt Willow Creek Trinity River Valley 152 Comment
  UC585951  Arctostaphylos Joseph P. Tracy 1932-7-12 10474 Humboldt head of Brett Hole Trinity Summit 1828 Comment
  JEPS118166  Arctostaphylos canescens subsp. canescens Dean W. Taylor 2009-7-14 20676 Humboldt vicinity Huestis Prairie (watershed Redwood Creek) 975 Comment
  JEPS38962  Arctostaphylos columbiana Joseph P. Tracy 1933-6-13 12583 Humboldt near summit Hoopa Mountain (ridge 1 mi s of road from Hoopa to Bair's) 1219 Comment
  UC585924  Arctostaphylos columbiana Joseph P. Tracy 1934-3-11 13151 Humboldt French Camp Ridge 1066 Comment
  UCD50695  Arctostaphylos columbiana Lincoln Constance 1934-5-24 638 Humboldt Bordering lower Look Prairie on E. side. 121 Comment
  UCD50897  Arctostaphylos glandulosa Joseph P. Tracy 1940-7-14 16688 Humboldt Wilder Ridge (near Kings Peak). 762 Comment
  CAS-BOT-BC24375  Arctostaphylos manzanita subsp. manzanita J. P. Smith; John O. Sawyer 1975-4-6 8051 Humboldt 3 mi. n. of Whitethorn, across from the Califonria Dept. of Forestry Fire Station. Comment
  CHSC110738  Arctostaphylos manzanita subsp. manzanita Dean Wm. Taylor 2011-5-4 21118 Humboldt Larabee Valley, along Highway 36 about 1 mile east of the eastern end of the valley at the bridge for the Little Van Duzen River, 701 Comment
  CAS-BOT-BC40062  Arctostaphylos nevadensis subsp. knightii Joseph P. Tracy 1935-6-23 13991 Humboldt French Camp Ridge 1066 Comment
  UCD53275  Arctostaphylos patula Joseph P. Tracy 1939-8-16 16419 Humboldt Grouse Mountain. 1524 Comment
  CAS-BOT-BC43978  Arctostaphylos uva-ursi Doris K. Kildale 1927-9-9 3306 Humboldt Big Lagoon Comment
  HSC59096  Armeria maritima subsp. californica Clark L. Miller 1979-5-24 2150 Humboldt Samoa Dunes off Samoa Blvd. Comment
  POM232100  Armeria maritima subsp. californica I. L. Wiggins 1930-7-11 4683 Humboldt Near Samoa Comment
  RSA245204  Armeria maritima subsp. californica Jerry Parker 1968-10-14 29 .1 Humboldt Mckinleyville Beach. Comment
  HSC44338  Arnica cernua Brad Klipfel 1975-6-17 684 Humboldt Horse Mtn. Comment
  HSC46207  Arnica cernua Thomas W. Nelson 1977-6-15 3435 Humboldt Horse Mtn.; along USFS Rd. 5N10 about 100 m south of junction with USFS Rd. 6N01 Comment
  HSC71797  Arnica cernua Gail Newton 1980-6-16 168 Humboldt Near Monks Camp. 1097 Comment
  HSC79315  Arnica cordifolia D. K. Imper 1982-7-2 Humboldt Six Rivers National Forest, near Lassics Lookout 1524 Comment
  UC249832  Arnica discoidea Joseph P. Tracy 1923-6-20 6335 Humboldt Briceland 304 Comment
  CDA18244  Arrhenatherum elatius G. D. Barbe, T. C. Fuller 1974-6-19 1882 Humboldt North Coast Ranges; Arcata, US Hwy 101 at Saint Louis Rd. 12 Comment
  CHSC33067  Artemisia douglasiana J. P. Smith; Advanced Plant Taxonomy Class 1971-10-9 5032 Humboldt Mad River above the Fish Hatchery. Comment
  HSC4719  Artemisia douglasiana Paul Shields 1955-9-29 Humboldt 1/2 mi. S of Fernbridge Comment
  HSC58169  Artemisia douglasiana G. L. Clifton, Griswold 1979-8-2 12240 Humboldt Near Oregon Creek, close to the town of Hoopa 1663 Comment
  UC275465  Artemisia douglasiana Joseph P. Tracy 1925-11-1 7305 Humboldt Shively Northern Coast Ranges Comment
  UC302288  Artemisia douglasiana Joseph P. Tracy 1926-9-6 7796 Humboldt near South Fork; Trinity River Valley Comment
  HSC67445  Artemisia pycnocephala J. P. Smith 1971-10-6 4960 Humboldt End of Murray Rd. in McKinleyville. Comment
  SEINET190483  Artemisia pycnocephala H. E. Parks Aug 1941 24186 Humboldt Little River State Park Comment
  SEINET198593  Artemisia pycnocephala H. E. Parks, S. T. Parks Jun 1952 24495 Humboldt Samoa Comment
  UC1052468  Artemisia pycnocephala H. E. and S. T. Parks 1952-6-1 24495 Humboldt Samoa Comment
  HSC4746  Artemisia pycnocephala David Adams 1960-7-17 Humboldt 2 miles S of Samoa 0 Comment
  POM264517  Artemisia pycnocephala H. E. Parks 1941-08 24186 Humboldt Little River State Park Comment
  RSA34239  Artemisia suksdorfii C. B. Wolf 1927-8-29 1220 Humboldt Devils' Gate, S of Cape Mendocino Comment
  HSC56131  Aruncus dioicus var. acuminatus G. L. Clifton, Griswold 1979-8-1 11947 Humboldt Near Mill Creek Lakes, close to the town of Hoopa. 1692 Comment
  UC154045  Aruncus dioicus var. pubescens Joseph P. Tracy 1909-6-13 2999 Humboldt near mouth of Warren Creek (hillside on Mad River); Northern Coast Region, Humboldt Bay Region 0 Comment
  CAS-BOT-BC453342  Aruncus dioicus var. vulgaris Doris K. Kildale 1928-6-24 7071 Humboldt Redwood Creek at Berry's 274 Comment
  HSC49821  Asarum caudatum R. York 1979-4-9 211 Humboldt Behind Humboldt State University Comment
  RSA114387  Asarum caudatum G. R. Campbell 1955-9-20 21468 Humboldt 4 mi. NE of Strongs Station (Van Duzen River) on Yager road Comment
  UC494106  Asarum caudatum H. E. Parks 1931-3-24 918 Humboldt Near Orick Comment
  HSC56462  Asclepias cordifolia Griswold, Butler 1979-7-12 7257 Humboldt Near Cedar Creek, close to the town of Willow Creek 1158 Comment
  CAS-BOT-BC65942  Aspidotis densa L. B. Kildale 1930-9-21 10218 Humboldt Bluff Creak trail to Fish Lake Comment
  RSA475203  Astragalus rattanii var. rattanii Aaron Liston, Sara Meury 1988-5-30 747 -1 Humboldt Van Duzen River; road across river E of Cheatman Grove [Cheatham Grove]. 100 Comment
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Jan 28 2016
  UC302115  Astragalus rattanii var. rattanii Joseph P. Tracy 1926-5-15 7486 Humboldt Kneeland Prairie Northern Coast Ranges, Kneeland Prairie 762 Comment
  JEPS109876  Astragalus umbraticus Dean W. Taylor 2006-8-2 19569 Humboldt Showers Mountain; on north flank of the mountain, south rim of the Mad River canyon 1051 Comment
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Apr 4 2017
  RSA0089849  Astragalus umbraticus Dean Wm. Taylor 2009-7-14 20674 Humboldt vicinity Lake Prairie, reached via Guy Kerr Ranch Road off Snow Camp Road. 1133 Comment
  HSC41268  Asyneuma prenanthoides Brad Klipfel 1974-7-23 462 Humboldt Horse Mtn. Comment
  RSA23653  Athyrium filix-femina subsp. cyclosorum C. B. Wolf 1939-7-6 9516 Humboldt Along Larabee Creek, 6 7/10 miles below Blocksberg on road to Bridgeville. 305 Comment
  HSC41335  Athyrium filix-femina var. cyclosorum Brad Klipfel 1974-9-7 565 Humboldt Horse Mtn., E fork of Willow Creek. Comment
  HSC54544  Athyrium filix-femina var. cyclosorum Overton, Butler 1979-7-23 9531 Humboldt Near Titlow Hill, close to the town of Willow Creek. 1280 Comment
  HSC4345  Atriplex leucophylla Jerry Parker 1968-10-26 206 Humboldt Driftline 0.5 mi. S of Big Lagoon. Comment
  UC183765  Atriplex leucophylla Joseph P. Tracy 1913-11-19 4416 Humboldt Bayshore at Bucksport (region about Humboldt Bay, Northern Coast Region); Northern Coast Region, Humboldt, Bayshore at Bucksport 0 Comment
  RSA424567  Atriplex patula T. S. Elias, Barbara A. Elias 1987-8-26 10623 Humboldt Fernbridge Comment
  SEINET4175775  Avena barbata Joseph P. Tracy 1906-4-29 2426 Humboldt Edge of field near Bucksport Comment
  HSC100249  Avena fatua J. P. Smith, & J. O. Sawyer 2010-5-2 12793 Humboldt At junction of Hwy. 96 and Big Rock Access Road. 145 Comment
  HSC9024  Avena fatua W. F. Nickel 1965-5-16 Humboldt N Arcata next to the Humboldt Motor Hotel. Comment
  HSC9032  Avena sativa E. W. Styskel 1964-4-28 76 Humboldt End of Davis St. at the edge of Eel River in Rio Dell Comment
  UCD56463  Avena sativa Joseph P. Tracy 1951-5-26 19511 Humboldt Trinity River Valley, at Willow Creek. 152 Comment
  JEPS21315  Baccharis glutinosa W. L. Jepson 1932-7-24 16391 Humboldt Garberville, Tooey Ranch Garberville Comment
  CAS-BOT-BC99405  Baccharis pilularis Joseph P. Tracy 1923-10-6 6565 Humboldt Eureka, around Humboldt Bay 30 Comment
  HSC5118  Baccharis pilularis subsp. consanguinea J. W. Johnson 1961-9-4 1102 Humboldt Arcata; in the Hollow N of Dune 3 N Christenson Farm, Samoa Peninsula Comment
  UC36796  Balsamorhiza deltoidea Joseph Burtt Davy and Walter C. Blasdale 1899-6-9 5369 Humboldt near Harris Comment
  UC1198286  Barbarea orthoceras Joseph P. Tracy 1906-5-6 2443 Humboldt hillside in Wolverton Gulch, near Hydesville 60 Comment
  HSC102640  Barbarea vulgaris M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-29 1624 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1579 Comment
  HSC100717  Barbarea vulgaris Carl C. Marshall Jun 1886 173 Humboldt Fields, Arcata. Comment
  HSC34805  Bellis perennis Dryden 1975-4-21 125 Humboldt Arcata Comment
  POM41982  Bellis perennis Marcus E. Jones 1924-4-26 s.n. Humboldt Eureka. Comment
  SD88368  Bellis perennis Darley F. Howe 1972-5-7 Humboldt Trinidad Comment
  CAS-BOT-BC48159  Bensoniella oregona R. Bacigalupi; L. Constance; Reid Moran; R. L. Rodriguez; Joe Tracy; Sherwin 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
  JEPS109857  Bensoniella oregona Dean W. Taylor 2006-6-21 19550 Humboldt Murphy Meadow; 1.5 air mi NE of Rush Ranch, northwest end of Murphy Meadow area 975 Comment
  UC1051580  Bensoniella oregona Joseph P. Tracy 1939-7-9 16327 Humboldt Snow Camp 1402 Comment
  HSC65099  Berberis aquifolium var. aquifolium J. P. Smith, J. O. Sawyer 1973-5-12 6687 Humboldt 6.1 mi. from Redwood Creek on Hoopa Rd. Comment
  HSC92017  Berberis nervosa E. Mackey 1986-10-24 Humboldt Patrick's Point State Park Comment
  UC1198381  Berberis nervosa Joseph P. Tracy 1926-6-13 7597 Humboldt Liscom Hill road near Blue Lake 152 Comment
  CAS-BOT-BC75686  Berberis nervosa Volney Rattan 1879-1-1 s.n. Humboldt Phelps. Comment
  HSC103115  Berberis repens M. Mesler 2010-9-4 841 Humboldt Along trail E603 (Salmon Summit traihead to Red Cap Lake), about 100 m SE of Baylor Camp. 1677 Comment
  BLMAR413  Bidens cernua Clara Sander 2007-8-22 413 Humboldt South Spit, east side of road near "lone tree" 9 Comment
  CAS-BOT-BC412985  Bistorta bistortoides Doris Kildale 1931-5-10 10678 Humboldt Snow Camp Comment
  POM118334  Blechnum spicant Marcus E. Jones 1924-4-26 s.n. Humboldt Eureka. Comment
  UC1222706  Boechera pauciflora Joseph P. Tracy 1950-8-8 19293 Humboldt head of Croghan Hole Trinity Summit, Croghan Hole Comment
  UC562686  Boechera subpinnatifida Joseph P. Tracy 1936-6-17 14971 Humboldt nw slope Buck Mountain; Northern Coast Ranges 853 Comment
  POM256476  Boisduvalia densiflora Joseph P. Tracy 1938-7-5 16003 Humboldt Carlotta, open flat by old Strong s District School House, 5 miles east of town. 46 Comment
  JEPS13526  Boschniakia strobilacea W. L. Jepson 1902-7-16 2052 Humboldt Trinity Summit. 2133 Comment
  HSC56152  Boykinia major G. L. Clifton, Griswold 1979-8-1 12008 Humboldt Near N Trinity Mtn., close to the town of Hoopa. 1798 Comment
  RSA466744  Boykinia major Anstruther Davidson 1918-07 3340 Humboldt Eel River. Comment
  HSC20181  Boykinia occidentalis H. E. Parks, S. T. Parks Jun, Jul 1952 24451 Humboldt Spruce Cove, Trinidad 61 Comment
  CAS-BOT-BC420276  Boykinia occidentalis Doris K. Kildale 1927-6-25 3574 Humboldt Fearren's ranch between Thorn & Shelter Cove Comment
  UC725902  Boykinia occidentalis A. A. Heller 1937-6-11 15893 Humboldt along U.S. Highway #101 between Bishop Pine Lodge and Big Lagoon; between Bishop Pine Lodge and Big Lagoon Comment
  HSC64122  Brassica rapa J. P. Smith 1973-5-26 6790 Humboldt Scotia Bluffs along the Eel River near Rio Dell Comment
  CAS-BOT-BC106286  Brickellia californica L. R. Abrams 1927-8-27 12049 Humboldt Rocky river bottom, Eel River, Richardson Grove Comment
  HSC32526  Brickellia californica Thomas W. Nelson 1973-9-3 1135 Humboldt McKeown Ranch N of Dinsmore Comment
  CAS-BOT-BC145428  Briza maxima Joseph P. Tracy 1930-6-15 8758 Humboldt Alder Point. 152 Comment
  RSA249403  Briza maxima J. D. Ackerman 1974-5-26 268 Humboldt ca. 1 mile south of Trinidad on Scenic Drive. Near coastal bluffs. Comment
  UCD57277  Briza maxima P. B. Kennedy 1929-6-13 s.n. Humboldt Etterburg. Comment
  HSC9096  Briza minor R. D. Modafferi 1965-5-13 Humboldt 2.3 mi. N of Trinidad on Trinity St. 305 Comment
  HSC74668  Brodiaea elegans subsp. elegans Gail Newton 1981-8-7 2433 Humboldt Near Bug Creek 1042 Comment
  UC15007  Brodiaea elegans subsp. elegans Joseph Burtt Davy 1899-6-11 5464 Humboldt near Elk Prairie Comment
  CAS-BOT-BC484217  Brodiaea elegans subsp. elegans Doris K. Kildale 1926-6-27 2209 Humboldt Larabee Valley 701 Comment
  JEPS7634  Brodiaea elegans subsp. elegans Milo S. Baker 1923-7-28 131 c Humboldt near camp on South Fork Yager Creek; North Coast Trip, South Fork Yager Creek Comment
  SEINET202009  Brodiaea terrestris subsp. terrestris Joseph P. Tracy 1942-6-15 17125 Humboldt Englewood natural prairie near Redcrest resort 91 Comment
  UC666939  Brodiaea terrestris subsp. terrestris Joseph P. Tracy 1933-5-20 12249 Humboldt 1 mi w Petrolia; Northern Coast Ranges, Mattole Valley 91 Comment
  UCD125575  Bromus Laurel Goldsmith 2012-11-1 s.n. Humboldt Near Arcata. Humboldt Bay National Wildlife Refuge. Lanphere Dunes Unit, just outside main office. 6800 Lanphere Road. 5 Comment
  SEINET201049 Image available Bromus carinatus var. carinatus Joseph P. Tracy 1925-7-5 7162 Humboldt High Prairie on Bald Mountain 1067 Comment
  UC249867  Bromus carinatus var. carinatus Joseph P. Tracy 1923-6-18 6282 Humboldt Northern Coast Ranges, Bear River Ridge Bear River Ridge; Northern Coast Ranges, Bear River Ridge 304 Comment
  HSC9278  Bromus diandrus W. F. Nickel 1965-5-13 Humboldt College Elementary School, on HSU campus. Comment
  HSC9294  Bromus diandrus R. T. Forester 1963-4-30 53 Humboldt 0.25 mi. N of Fairhaven on Samoa Rd. Comment
  HSC90690  Bromus hordeaceus Gail Newton 1982-5-31 3554 Humboldt Elk River Wildlife Area, Eureka Comment
  UC1103362  Bromus hordeaceus Joseph P. Tracy 1939-4-29 16260 Humboldt Orleans 121 Comment
  UC204532  Bromus sterilis Joseph P. Tracy 1916-5-31 4698 Humboldt Northern Coast Ranges, along Eel River from South Fork to Scotia, Holmes Flat Holmes Flat; Northern Coast Ranges, Eel River, Holmes Flat 60 Comment
  UC1131268  Bromus tectorum H. S. Yates 1936-6-19 5715 Humboldt near Burr Valley 914 Comment
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Apr 6 2017
  UC37724  Bromus tectorum Harley P. Chandler June, 1901 1432 Humboldt North Coast Ranges, Klamath River Klamath River; North Coast Ranges, Klamath River 335 Comment
  JEPS72925  Bromus vulgaris Lincoln Constance 1934-6-7 830 Humboldt Bull Creek Region, South Fork Eel River, Johnson Prairie Johnson Prairie; Bull Creek Region, South Fork Eel River, Johnson Prairie Comment
  UCR37862  Cakile edentula subsp. edentula D. Gordon 1982-9-23 s.n. Humboldt Northern Coast, Lanphere-Christensen Dunes Preserve, 3 mi west of Arcata Comment
  HSC31340  Cakile maritima Larry E. DeBuhr, G. Wallace 1972-5-22 608 Humboldt Prairie Creek Redwoods State Park Comment
  UCD114934  Cakile maritima M. Barbour 1969-9-4 s.n. Humboldt About 1 mile SW of Samoa. Comment
  UCD114935  Cakile maritima M. Barbour 1969-9-4 s.n. Humboldt Just west of Trinidad and north, across isthmus from Trinidad Bay. Comment
  HSC74068  Calamagrostis foliosa Joyce Walker 1980-5-7 Humboldt Four Mile Creek Comment
  HSC76541  Calamagrostis koelerioides Denis Kearns 1981-7-6 85 Humboldt Near Mosquito Lake 1256 Comment
  CAS-BOT-BC185179  Calamagrostis nutkaensis Joseph P. Tracy 1925-7-5 7174 Humboldt Northern Coast Ranges. Bald Mountain. Near High Prairie. 1066 Comment
  UCD57537  Calamagrostis ophitidis R. Tofsrud 1948-9-3 s.n. Humboldt 3-4 miles south of Berry's Summit at road junction near summit of Horse Mountain. 1463 Comment
  UC1198379  Calandrinia ciliata Joseph P. Tracy 1930-6-8 8735 Humboldt Kneeland Prairie 762 Comment
  CHSC100698  Callitriche heterophylla var. bolanderi Robert F. Thorne; P. Everett 2007-6-13 35345 Humboldt Along Hwy. 101 about 3 mi. N of Eureka; in shallow water ca. 1 ft. deep of ditch along roadside. 1 Comment
  UC1714424  Callitriche heterophylla var. bolanderi J. P. Tracy 1900-5-28 824 Humboldt immediate vicinity Eureka 0 Comment
  JEPS42834  Callitriche heterophylla var. bolanderi W. L. Jepson 1936-8-17 17921 Humboldt 2.5 mi s Fields Landing Comment
  UC1714425  Callitriche marginata Joseph P. Tracy 1901-6-30 1207 Humboldt Immediate Vicinity Eureka 0 Comment
  CAS-BOT-BC80380  Calocedrus decurrens Doris K. Kildale 1925-8-18 1252 Humboldt Trinity Summit - McKay's Cabin 1524 Comment
  CAS-BOT-BC80387  Calocedrus decurrens Doris K. Kildale 1927-5-13 3129 Humboldt Redwood Creek at Berry's 289 Comment
  CAS-BOT-BC80391  Calocedrus decurrens Doris K. Kildale 1928-10-7 6750 Humboldt Trinity River at Willow Creek Flat Comment
  CAS-BOT-BC488620  Calochortus elegans var. nanus Doris Kildale Gillespie 1931-6-7 10586 Humboldt South Fork Mt., Blake Lookout 1726 Comment
  UC667125  Calochortus tolmiei Joseph P. Tracy 1927-5-8 7960 Humboldt Phillipsville 121 Comment
  CAS-BOT-BC494367  Calochortus tolmiei H. C. Cantelow 1941-4-26 36 Humboldt 12 miles sw. of Ferndale on road to Cape Mendocino Comment
  RSA168945  Calochortus vestae Joseph P. Tracy 1950-6-23 18868 Humboldt Dobbyn Creek, 3 miles northeast of Alderpoint. 213 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
  CAS-BOT-BC273314  Calycadenia fremontii Doris K. Kildale 1925-7-5 1006 Humboldt Willow Creek Flat 152 Comment
  UC668210  Calycadenia fremontii Joseph P. Tracy 1938-8-14 16117 Humboldt South Fork of Trinity River, west of its mouth South Fork of Trinity River 304 Comment
  CHSC24853  Calypso bulbosa A. D. Launer 1976-4-9 6 Humboldt On e hillside of Blocksburg Cemetery, ca. 30 yds s of Cemetery Rd, 200 yds w of Alderpoint Rd in Blocksburg. 464 Comment
  HSC54024  Calyptridium monospermum Griswold, Butler 1979-7-12 7193 Humboldt Near Groves Prairie, close to the town of Willow Creek. 1256 Comment
  HSC55120  Calyptridium monospermum Gilbert Muth 1979-8-1 11899 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1877 Comment
  UC175713  Calystegia purpurata Joseph P. Tracy 1912-7-26 3859 Humboldt Kneeland Prairie , Kneeland Prairie (Northern Coast Ranges) 762 Comment
  RSA178575  Calystegia purpurata Joseph P. Tracy 1950-6-8 18769 Humboldt Near petrolia Hills between Town and Ocean. Comment
  HSC38379  Calystegia soldanella Peter Sorensen 1976-5-29 Humboldt King Salmon Comment
  RSA603171  Calystegia soldanella D. D. Keck, Jens Clausen 1935-6-16 3384 Humboldt Mouth of Little River. Comment
  UCD170801  Calystegia soldanella Gordon Leppig; Sylvia Leppig and Kai Neander 1998-5-6 747 Humboldt Dry Lagoon State Park, between ocean and Dry Lagoon. 2 Comment
  HSC59742  Camissonia cheiranthifolia Clark L. Miller 1979-5-9 7118 Humboldt Samoa Dunes W of Samoa Blvd. Comment
  RSA246929  Camissonia cheiranthifolia subsp. cheiranthifolia Robert F. Thorne, Percy C. Everett 1965-8-5 35150 Humboldt Samoa Dunes. 3 Comment
  HSC48807  Camissonia strigulosa Brad Klipfel 1975-5-22 619 Humboldt Near the city of Eureka airport S of Samoa Comment
  CAS-BOT-BC160240  Camissoniopsis cheiranthifolia subsp. cheiranthifolia C. C. Harris; S. K. Harris; Clarence Crane, Jr. 1939-8-23 s.n. Humboldt On beach-sand at Samoa Comment
  CAS-BOT-BC160233  Camissoniopsis cheiranthifolia subsp. cheiranthifolia T. Mosquin; L. Mosquin 1962-7-19 4489 Humboldt 8.8 miles north of Big Lagoon along US highway 101 to Oregon Comment
  SEINET10462973  Campanula prenanthoides Overton 1979-7-24 OVERTON 9693 Humboldt Near Friday Camp, on the Willow Creek quad., close to the town of Willow Creek 1250 Comment
  SEINET10462960  Campanula prenanthoides Klipfel 1973-8-3 KLIPFEL 309 Humboldt Along ridge trail southeast of North Trinity Mountain. T8N R6E Secs. 11, 14 1829 Comment
  SEINET10462965  Campanula prenanthoides Aven Nelson, Ruth A. Nelson 1977-7-1 Nelson 3562 Humboldt Along north slope of ridge between Bear & Blanket Creeks. T1S R5E SEC.25 1494 Comment
  SEINET10972390  Campanula prenanthoides Tracy 1908-6-27 TRACY 2859 Humboldt Valley of Van Duzen River; opposite Buck Mountain, in woods. 762 Comment
  UC1326258  Campanula prenanthoides Milo S. Baker 1947-8-8 11925 Humboldt just n Orick (about 10 mi along Rd from Hwy 101 towards Hoopa) 609 Comment
  UC602533  Campanula prenanthoides Joseph P. Tracy 1933-7-26 12927 Humboldt Grouse Creek Basin 762 Comment
  HSC63287  Campanula scouleri M. A. Baker 1979-6-29 956 Humboldt Hopkin's Creek. 760 Comment
  RSA46687  Campanula scouleri Doris K. Kildale 1937-7-18 15143 Humboldt Horse Mt. Comment
  HSC6623  Capsella bursa-pastoris Francis Winter 1960-3-26 Humboldt Samoa Peninsula, 2 mi. N of Coast Guard Station Comment
  CAS-BOT-BC37423  Cardamine californica Doris K. Kildale 1927-1-23 2974 Humboldt Blue Slide in the Van Duzen River. Comment
  CAS-BOT-BC37434  Cardamine californica Lincoln Constance; Reed Clark Rollins 1942-5-20 2998 Humboldt Eel River, 1 mile north of Pepperwood. 45 Comment
  RSA0034557  Cardamine californica var. integrifolia H. E. Parks, Joseph P. Tracy 1931-3-26 916 Humboldt Lower Van Duzen River. 61 Comment
  RSA0034558  Cardamine californica var. integrifolia Victor Duran 1933-5-11 3405 Humboldt Van Duzen River, near Bridgeville. Comment
  RSA176497  Cardamine californica var. integrifolia Doris K. Kildale 1927-1-23 2974 Humboldt Van Duzen River at the Blue Shale. Comment
  RSA0097053  Cardionema ramosissimum R. F. Thorne, Percy C. Everett 1965-8-5 35155 Humboldt Samoa Dunes. 3 Comment
  CAS-BOT-BC18518  Carex abrupta Joseph Prince Tracy 1937-7-29 15580 Humboldt South Fork Mountains. McKay Camp. 1676 Comment
  CAS-BOT-BC17981  Carex aquatilis Joseph Prince Tracy 1935-6-8 13948 Humboldt Dry Lagoon (along coast in front of South End of Stone Lagoon). 3 Comment
  UCD149856  Carex aquatilis var. dives H. McC.; William Anderson 1964-8-5 s.n. Humboldt Dry Lagoon. Comment
  HSC98944  Carex athrostachya Cara Witte 2008-7-16 922 Humboldt Mud Lake. Off National Forest 1, near Buck Flat. 1569 Comment
  CHSC47364  Carex bolanderi L. P. Janeway 1984-5-27 835 Humboldt Ca 1 mi E of Redway on Redwood Cr. 91 Comment
  RSA364621  Carex bolanderi Henry M. Pollard 1948-7-22 s.n. Humboldt Perch Creek Canyon, near Orleans. Comment
  UC1103102  Carex bolanderi Joseph P. Tracy 1926-6-6 7574 Humboldt Hoopa Mountain, near summit on road W from Hoopa to Bair's 1066 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
  CAS-BOT-BC34013  Carex brevicaulis Joseph Prince Tracy 1939-4-27 16228 Humboldt Mouth of Little River. 9 Comment
  CAS-BOT-BC530907  Carex debiliformis H. N. Bolander no date on label 6477 Humboldt Red Mountain Comment
  CHSC85975  Carex echinata subsp. phyllomanica L. P. Janeway 2003-7-30 7943 Humboldt High North Coast Ranges. High North Coast Ranges. White Rock Spring, just above Clear Lake, on southwest side below Titlow Hill Road, 2.9 km southeast of Titlow Hill. 1512 Comment
  SEINET7558590 Image available Carex feta Alice Eastwood, John Thomas Howell 1937-6-22 4743 Humboldt Near Blocksburg. Comment
  CAS-BOT-BC21280  Carex fracta Joseph Prince Tracy 1937-7-25 15542 Humboldt Trinity Summit. Head of Hors-Linto Creek. 1371 Comment
  JEPS79858  Carex gracilior Joseph P. Tracy 1925-7-5 7166 Humboldt High Prairie on Bald Mountain, Northern Coast Ranges High Prairie; Northern Coast Ranges, Bald Mt., High Prairie 1066 Comment
  JEPS79844  Carex gynodynama Joseph P. Tracy 1936-6-21 14991 Humboldt Iaqua 609 Comment
  JEPS25973  Carex harfordii Joseph P. Tracy 1935-6-8 13938 Humboldt Northern Coast Ranges, Eureka Eureka; Northern Coast Ranges, Eureka 0 Comment
  SEINET8068029 Image available Carex harfordii A. L. Hipp 1999-1 438 Humboldt Phillipsville-Edge of 101 (Redwood Hwy), big E-turn just S. of the Miranda exit. Comment
  JEPS25966  Carex harfordii Joseph P. Tracy 1927-7-17 8279 Humboldt Three Cabins: grassy slopes on lower western foothills of Chaparral Mountain 457 Comment
  CAS-BOT-BC21752  Carex hassei Joseph Prince Tracy 1927-6-17 8170 Humboldt Big Lagoon. 6 Comment
  POM160901  Carex hassei Joseph P. Tracy 1924-7-13 6721 Humboldt Big Lagoon. 6 Comment
  CHSC43908  Carex hendersonii L. P. Janeway 1984-5-27 836 Humboldt Ca 1 mi east of Redway, along Redwood Cr. 91 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
  HSC102162  Carex hoodii M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-3 1072 Humboldt Patterson Meadows 1555 Comment
  CAS-BOT-BC35563  Carex jonesii Joseph Prince Tracy 1935-7-26 14257 Humboldt Trinity Summit, Meadows at Water Dog Lakes 1828 Comment
  UC562266  Carex jonesii Joseph P. Tracy 1932-7-15 10572 Humboldt Corral Prairie Trinity Summit 1584 Comment
  CAS-BOT-BC7791  Carex laeviculmis Doris K. Kildale 1931-5-10 10674 Humboldt Snow Camp Comment
  HSC75759  Carex leptopoda Teresa Prendusi 1981-7-7 137 Humboldt Near Slate Creek Butte. 1158 Comment
  SEINET7565140 Image available Carex leptopoda L. P. Janeway 2003-7-27 7929 Humboldt North Coast. On ridge between Stone Lagoon, Dry Lagoon and the beach (Sharp Point). Rodgers Peak 7.5' quad. 823 Comment
  UC1133402  Carex lyngbyei H. S. Yates 1936-6-23 5861 Humboldt 1 mi w Bayside; Eureka Quadrangle 0 Comment
  HSC102156  Carex microptera M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-3 1064 Humboldt Patterson Meadows 1555 Comment
  HSC34959  Carex multicaulis Thomas W. Nelson 1975-5-24 1869 Humboldt McKeown Ranch, N of Dinsmore. Comment
  CHSC40167  Carex nudata L. P. Janeway 1984-4-20 732 Humboldt Levee on east side of Eel River near Fortuna at Sandy Prairie Road. 12 Comment
  CHSC40169  Carex nudata L. P. Janeway 1984-5-13 777 Humboldt Along the North Fork Yager Creek 18 miles east of the Kneeland P.O. on the Kneeland/Bridgeville Road. 381 Comment
  CAS-BOT-BC119540  Carex nudata Henry M. Pollard 1945-8-25 s.n. Humboldt Orleans Bridge, Klamath River Canyon Comment
  HSC44411  Carex nudata Thomas W. Nelson, Jane P. Nelson 1977-5-30 3407 Humboldt Mad River at Andersons Ford N of Dinsmore on the McKeown Ranch 610 Comment
  CHSC84722  Carex obnupta L. P. Janeway 2003-7-27 7925 Humboldt North Coast. Edge of marsh on south side of southwest end of Hwy 101 causeway across Big Lagoon. 2 Comment
  HSC40257  Carex obnupta Linda M. Barker 1976-4-30 1421 Humboldt 3 mi. W of Arcata Comment
  HSC7071  Carex obnupta J. W. Johnson 1961-9-3 1081 Humboldt Arcata, Christenson Farm, Samoa Peninsula Comment
  SDSU11682  Carex obnupta D. F. Howe 1961-8-1 Humboldt 3 miles north of Arcata on #101 Comment
  UCD140701  Carex obnupta Gordon Leppig 1998-6-26 858 Humboldt McKinleyville, Hammond Trail, 100 m south of Knox Cove. 18 Comment
  BLMAR237  Carex obnupta Jennifer Anthony-Wheeler 1996-9-26 237 Humboldt King range, growing in wet places in creeksides habitat between Nadelos and Wailaki 548 Comment
  CAS-BOT-BC119382  Carex obnupta Joseph Prince Tracy 1934-7-13 13381 Humboldt Arcata Bottom. 15 Comment
  CDA33125  Carex obnupta T. C. Fuller 1961-9-28 7055 Humboldt 1.5 miles south of Samoa. 0 Comment
  HSC7061  Carex obnupta J. W. Johnson 1962-4-28 1306 Humboldt Arcata, Hollow 10, W.M. Lamphere Farm, Samoa Peninsula Comment
  UC196571  Carex obnupta Joseph P. Tracy 1916-5-31 4696 Humboldt along Eel River from South Fork to Scotia; Northern Coast Ranges, Holmes Flat 60 Comment
  CAS-BOT-BC119265  Carex ovalis Joseph Prince Tracy 1939-7-9 16315 Humboldt Bald Mt. Abundant in ditch 1 mi N of Murphy Meadows. 914 Comment
  CAS-BOT-BC119271  Carex ovalis Joseph Prince Tracy 1937-8-7 15617 Humboldt Bald Mt. Murphy Ridge. 914 Comment
  UC201994  Carex pachystachya Joseph P. Tracy 1918-7-5 5017 Humboldt White Thorn Valley Northern Coast Ranges 304 Comment
  JEPS79859  Carex rossii Joseph P. Tracy 1935-6-2 13921 Humboldt Big Lagoon 3 Comment
  SEINET4290241 Image available Carex subbracteata Unknown 2009-1 24500 Humboldt Outer North Coast Range (NCoRO), above Route 299, 0.7 road miles W of Berry Summit. Comment
  CAS-BOT-BC115572  Carex tumulicola Joseph Prince Tracy 1930-7-10 8859 Humboldt In grassy opening, Brannan Mountain. 1219 Comment
  RSA91642  Carex tumulicola Alice Eastwood, John Thomas Howell 1937-6-23 4758 Humboldt Dinsmore s. Comment
  NY11390  Carex unilateralis J. P. Tracy 1912-7-21 3783 Humboldt 30.5 Comment
  UC562627  Carex unilateralis Joseph P. Tracy 1933-6-9 12539 Humboldt Fortuna 18 Comment
  UC1103610  Carex utriculata Joseph P. Tracy 1937-8-12 15636 Humboldt Snow Camp 1402 Comment
  UC1152051  Carex utriculata Joseph P. Tracy 1950-7-25 19065 Humboldt near McKay Camp; South Fork Mountain 1676 Comment
  CAS-BOT-BC114985  Carex viridula Joseph Prince Tracy 1924-7-13 6720 Humboldt In brackish swamp, Big Lagoon. 6 Comment
  UC1056035  Carex viridula var. viridula H. E. Parks September 1935 5214 Humboldt Dry Lagoon Comment
  UC198585  Carpobrotus chilensis Joseph P. Tracy 1916-4-9 Humboldt n of Samoa (Ocean Beach at Humboldt Bay); Northern Coast Region, Humboldt Bay Comment
  RSA47163  Castilleja affinis Doris K. Kildale 1927-1-17 2985 Humboldt Alton hill. Comment
  JEPS25062  Castilleja affinis subsp. affinis Joseph P. Tracy 1942-7-1 17366 Humboldt opposite Buck Mountain (Dinsmore's, along Van Duzen River); Van Duzen River 762 Comment
  JEPS35841  Castilleja affinis subsp. litoralis Rimo Bacigalupi, and L. R. Heckard 1964-8-2 8987 Humboldt Trinidad Head, just below lighthouse (above fog horn) Trinidad Head Comment
  JEPS57403  Castilleja affinis subsp. litoralis L. R. Heckard with T. I. Chuang 1968-7-4 1979 Humboldt n end Big Lagoon Comment
  UC1222830  Castilleja affinis subsp. litoralis Joseph P. Tracy 1950-6-8 18749 Humboldt 1 mi e Cape Mendocino (s slope of Bear River Ridge, near Capetown); Cape Ridge, Bear River Ridge 152 Comment
  UC582571  Castilleja ambigua subsp. ambigua H. E. Parks and Joseph P. Tracy 1928-9-8 8503 Humboldt Big Lagoon 6 Comment
  HSC70448  Castilleja ambigua subsp. humboldtiensis Thomas W. Nelson, Doris K. Niles 1979-5-19 4694 Humboldt Tidal marsh at mouth of Eel River, Crab Park, N of County Park. Comment
  UC146237  Castilleja ambigua subsp. humboldtiensis Joseph P. Tracy 1900-7-4 867 Humboldt Samoa; North Coast Region, Humboldt Bay Region 0 Comment
  JEPS3617  Castilleja applegatei subsp. martinii Clyde Ritchie Bell 1951-4-21 Humboldt about 4 mi n Orleans (along Calif Hwy 96 (Klamath River road)) Comment
  RSA183597  Castilleja franciscana D. E. Anderson 1962-7-10 2244 Humboldt Luffenholtz Beach, about 2 miles south of Trinidad along old 101 highway. Comment
  RSA15566  Castilleja litoralis Carl B. Wolf 1927-8-29 1195 Humboldt 7 miles south of Ferndale and Capetown, Bear River Ridge, Mt. Glen. Comment
  HSC44563  Castilleja miniata Brad Klipfel 1973-7-15 183 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  UC213503  Castilleja miniata Joseph P. Tracy 1919-9-18 5228 Humboldt Trinity Summit; Northern Coast Ranges 1828 Comment
  UC179928  Castilleja miniata Joseph P. Tracy 1914-7-4 4537 Humboldt High Prairie Northern Coast Ranges, Bald Mountain (on Bald Mountain) 1066 Comment
  UC199387  Castilleja pruinosa Harley P. Chandler Jun 1901 1364 Humboldt Hupa Indian Reservation; North Coast Ranges, Hupa Valley 152 Comment
  JEPS25752  Castilleja rubicundula subsp. lithospermoides Joseph P. Tracy 1908-6 2849 Humboldt opposite Buck Mountain (valley of Van Duzen River); Northern Coast Ranges 762 Comment
  HSC45083  Caulanthus lasiophyllus R. Sutherland 1978-4-23 3 .23478 Humboldt Head of Kinsey (Fraser) Ridge 716 Comment
  UC1502111  Ceanothus R. Sutherland 1976-10-30 1 .30-76 Humboldt Pt. Delgada Quad. 624 Comment
  SEINET200665  Ceanothus cordulatus J. P. Tracy 1935-7-14 14092 Humboldt Grouse Mountain ridge near 'Clear Lake 1524 Comment
  CAS-BOT-BC49314  Ceanothus cuneatus Volney Rattan 1878-1-1 s.n. Humboldt unspecified Comment
  UC176125  Ceanothus cuneatus var. cuneatus Joseph P. Tracy 1913-6-17 4173 Humboldt near summit of Buck Mt. North Coast Ranges 1676 Comment
  BLMAR669  Ceanothus integerrimus Jennifer Wheeler 2013-6-3 669 Humboldt Lacks Creek, Pine Ridge Rd. 1097 Comment
  CAS-BOT-BC63724  Ceanothus integerrimus Myrtle Paulson 1918-4-28 s.n. Humboldt Eureka. Comment
  UC164817  Ceanothus integerrimus J. P. Tracy 1903-5-24 1907 Humboldt Alder Point Eel River 152 Comment
  RSA46885  Ceanothus integerrimus var. californicus Doris K. Kildale 1926-4-25 1813 Humboldt Hoopa Mt. Comment
  SBBG116557  Ceanothus oliganthus var. sorediatus D. H. Wilken 2003-7-22 16174 Humboldt near Windy Nip Gap, Mattole Rd, 1.5 km SW of Cathy's Pk 670 Comment
  CAS-BOT-BC51218  Ceanothus parryi C. Hart Merriam 1920-8-30 s.n. Humboldt Garberville Comment
  HSC36680  Ceanothus parryi R. Sutherland 1975-5-2 7 .2575 Humboldt Near old Hwy. 101 116 Comment
  UC1502108  Ceanothus parryi R. Sutherland 1975-4-19 A 4 .19.4.75 Humboldt Whitethorn Road at Van Arken Creek; Briceland Quad., Van Arken Creek 298 Comment
  UC249582  Ceanothus parryi Joseph P. Tracy 1921-5-27 5808 Humboldt near Humboldt-Mendocino County line; Northern Coast Ranges, South Fork of Eel River 152 Comment
  UC249583  Ceanothus parryi Joseph P. Tracy 1921-5-27 5808 1/2 Humboldt near Humboldt-Mendocino County line; Northern Coast Ranges, South Fork of Eel River 152 Comment
  CAS-BOT-BC52045  Ceanothus prostratus Henry M. Pollard 1944-9-8 s.n. Humboldt Orleans Mt. 1524 Comment
  HSC41346  Ceanothus pumilus Brad Klipfel 1974-9-17 575 Humboldt Horse Mtn. Comment
  CAS-BOT-BC52219  Ceanothus thyrsiflorus Doris K. Kildale 1926-6-18 2399 Humboldt Gold Bluffs Comment
  CAS-BOT-BC52985  Ceanothus thyrsiflorus L. R. Abrams; J. T. Benson 1924-5-17 10731 Humboldt One mile north of Trinidad Head Comment
  CAS-BOT-BC52998  Ceanothus thyrsiflorus Carl B. Wolf 1927-8-22 806 Humboldt 1 mile south of Orick, along the hills near the ocean. Comment
  CHSC19497  Ceanothus thyrsiflorus Norman Dennis 1965-6-19 124 Humboldt About 1/4 mile south and 1 mile east of the junction of Barry Ridge Road and the Eureka-Bridgeville county road, along Ashfield Ridge Road. About 5 miles southeast of Kneeland. 792 Comment
  HSC89425  Ceanothus thyrsiflorus P. A. Daly 1984-5-8 6 Humboldt Trinidad Head. 61 Comment
  JEPS42171  Ceanothus thyrsiflorus W. L. Jepson 1932-8-6 16492 Humboldt Weott Comment
  RSA172183  Ceanothus thyrsiflorus Robert F. Thorne 1957-9-2 19005 Humboldt Eel River. Burlington State Park, just S of Weott. 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
  UC170229  Ceanothus thyrsiflorus Joseph Burtt Davy and Walter C. Blasdale 1899-6-18 5623 Humboldt near Korbel (Bald Mt.); North Coast Ranges, Bald Mt. Comment
  UC503021  Ceanothus velutinus Joseph P. Tracy 1932-7-17 10698 Humboldt open ground at Corral Prairie (Trinity Summit); Klamath Mountains, Trinity Summit 1524 Comment
  UC582524  Centaurea benedicta Joseph P. Tracy 1928-10-7 8515 Humboldt at Willow Creek; Trinity River Valley 152 Comment
  CAS-BOT-BC272108  Centaurea cyanus Henry M. Pollard 1948-7-24 s.n. Humboldt Near Orleans Comment
  RSA167190  Centaurea cyanus Joseph P. Tracy 1948-8-8 18097 Humboldt Roadside halfway between Bridgeville and head of S. Yager Comment
  CDA42257  Centaurea diffusa P. Haggard 1998-9-13 s.n. Humboldt North Coast Ranges; USFS land near Blue Lake. 0 Comment
  CDA7306  Centaurea nigra K. E. Frick 1961-8-16 Humboldt Eureka. Near fairgrounds. 0 Comment
  UC1198629  Centaurium muehlenbergii Joseph P. Tracy 1942-7-18 17283 Humboldt Garberville 152 Comment
  UC275461  Centromadia fitchii Joseph P. Tracy 1925-8-23 7247 Humboldt Harris Northern Coast Ranges 914 Comment
  JEPS38151  Centromadia pungens subsp. pungens W. L. Jepson 1932-8-8 16486 a Humboldt Canoe Creek Grasshopper Peak, Canoe Creek 1066 Comment
  UC1196467  Cephalanthera austiniae Joseph P. Tracy 1948-8-15 18149 Humboldt on ridge 2 mi. e. Grove's Prairie (Trinity Summit); Trinity Summit 1524 Comment
  UC1196470  Cephalanthera austiniae Joseph P. Tracy 1932-7-20 10734 Humboldt Trinity Summit near Corral Prairie; Trinity Summit 1584 Comment
  HSC4095  Cerastium arvense Lincoln Constance 1934-6-3 805 Humboldt Rd. from High Rock on Redwood Hwy. 1 mi. N of Dyerville to Horse Prairie, S Fork Eel River, Bull Creek Comment
  HSC4099  Cerastium glomeratum H. E. Parks, S. T. Parks Apr 1944 24279 Humboldt Spruce Cove, Trinidad 61 Comment
  HSC74573  Cercis occidentalis M. A. Baker 1980-5-17 1245 Humboldt Near Le Perron Peak 1066 Comment
  POM126513  Cercis occidentalis Joseph P. Tracy 1922-4-30 6003 Humboldt Trinity River Valley, near Willow Creek. 152 Comment
  POM161037  Cercis occidentalis Joseph P. Tracy 1922-4-30 s.n. Humboldt Trinity River Valley, near Willow Creek. 152 Comment
  UC160965  Cercis occidentalis Harley P. Chandler June, 1901 1428 Humboldt Klamath River North Coast Ranges 304 Comment
  UC33525  Cercis occidentalis Chesnut and Drew 1888-7-28 Humboldt Grouse Creek Comment
  CAS-BOT-BC135532  Cercocarpus betuloides var. betuloides Joseph P. Tracy 1927-4-10 7897 Humboldt Trinity River Valley, near the South Fork 182 Comment
  HSC57698  Chaenactis douglasii var. douglasii G. L. Clifton, Griswold 1979-7-25 10927 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1784 Comment
  HSC41651  Chamaecyparis lawsoniana Thomas W. Nelson 1977-10-20 3758 Humboldt Above junction of Maple Creek and Kneeland Rds. 854 Comment
  HSC48701  Chamerion angustifolium subsp. circumvagum Brad Klipfel 1973-7-31 258 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC76201  Chamerion angustifolium subsp. circumvagum Overton, Butler 1979-8-2 12521 Humboldt Near Bret Hole, close to the town of Hoopa 1554 Comment
  SEINET200780  Chamerion angustifolium subsp. circumvagum Joseph P. Tracy 1932-7-17 10664 Humboldt Ridges east of Corral Prairie. 1676 Comment
  HSC76323  Cheilanthes gracillima Denis Kearns 1981-7-21 304 Humboldt Near Whiteys Peak 1585 Comment
  HSC82123  Cheilanthes gracillima Thomas W. Nelson 1979-7-11 4997 Humboldt N Trinity Mtn. and ridge to E. 1829 Comment
  UC440177  Cheilanthes gracillima Joseph P. Tracy 1919-9-23 5289 Humboldt Trinity Summit; Northern Coast Ranges 1828 Comment
  HSC100932  Cheilanthes gracillima Miss Handy Jun 1886 337 Humboldt Rocks near Maple Cr. Comment
  HSC98979  Cheilanthes gracillima Cara Witte 2008-5-26 656 Humboldt 3/4 mile south of Titlow Hill. 1422 Comment
  RSA44502  Chenopodium ambrosioides var. ambrosioides H. M. Pollard 1947-8-31 s.n. Humboldt Klamath River near Wilson Creek, Orleans region. Comment
  RSA44503  Chenopodium pumilio H. M. Pollard 1947-8-31 s.n. Humboldt Orleans Hotel grounds, Orleans. Comment
  HSC55035  Chimaphila menziesii Overton, Butler 1979-7-31 11486 Humboldt Near N Trinity Mtn., close to the town of Hoopa 1940 Comment
  SEINET10539751  Chimaphila menziesii Botany 1985-5-10 BOTANY s.n. Humboldt T5n,r6e,sec.34, h.m.; Grays falls campground off hwy 299. Shaded understory, Douglas fir, madrone, canyon live oak 241 Comment
  HSC54226  Chimaphila umbellata Griswold, Butler 1979-7-12 7291 Humboldt Near Lone Pine Ridge, close to the town of Willow Creek. 1478 Comment
  UC412888  Chimaphila umbellata Mrs. M. H. Manning 1900-1 Humboldt near Hupa Comment
  RSA119360  Chimaphila umbellata subsp. occidentalis S. S. Tillett 1956-7-6 616 Humboldt Along Bar Shanty Road, 9 mi. from Orleans. 945 Comment
  POM289618  Chrysanthemum leucanthemum Lyman Benson 1928-7-10 421 Humboldt Hills at Fortuna; Seaward N Coast Mt. Range, Mouth of Eel River 30 Comment
  CAS-BOT-BC30123  Chrysolepis chrysophylla Joseph P. Tracy 1933-8-6 12933 Humboldt Northern Coast Ranges. French Camp Ridge. 1066 Comment
  CAS-BOT-BC36486  Chrysolepis chrysophylla Joseph P. Tracy 1940-8-25 16715 Humboldt Bald Mountain 975 Comment
  UC642264  Cicuta douglasii Joseph P. Tracy 1938-9-25 16169 Humboldt Bald Mountain, at Lake Prairie Lake Prairie; Bald Mountain, Lake Prairie 1066 Comment
  HSC16243  Circaea alpina subsp. pacifica D. E. Anderson 1967-6-7 4349 Humboldt Along Puter Creek, tributary to Mad River, about 3 mi. S of Blue Lake Comment
  UC562518  Circaea alpina subsp. pacifica Joseph P. Tracy 1936-8-7 15088 Humboldt head of Little Hors-Linto Creek (Trinity Summit); Trinity Summit 1371 Comment
  RSA125055  Circaea alpina subsp. pacifica Peter H. Raven, R. Snow 1958-7-20 13640 Humboldt 1.1 miles south of junction of Friday Ridge Road on Titlow Hill Road, near Grouse Ridge. Comment
  UCD20404  Circaea alpina subsp. pacifica Donald C. Hagar 1957-8-27 218 Humboldt 8.5 miles NE of Hoopa, Domingo Block 'e'. 1371 Comment
  HSC91922  Cirsium arvense E. Mackey 1986-7-21 Humboldt Patricks Point State Park; Palmer's Point Comment
  JEPS11944  Cirsium arvense Rimo Bacigalupi with C. L. Custer and G. T. Robbins 1954-8-11 4757 Humboldt 0.5 mi n Mad River bridge (n of Arcata, in field along U.S. Highway 101); U.S. Highway 101 Comment
  HSC5371  Cirsium arvense H. D. Sumner 1959-7-13 Humboldt Redwood Creek near Hwy. 299 305 Comment
  POM289622  Cirsium arvense Lyman Benson 1929-7-12 1789 Humboldt Weott Ranger Station. S Fork Eel River. Comment
  UC169293  Cirsium brevistylum Joseph P. Tracy 1912-7-14 3748 Humboldt at Eureka Northern Coast Region, Eureka 0 Comment
  CDA1114  Cirsium brevistylum T. R. Haig, T. C. Fuller 1959-6-12 2792 Humboldt 8 mi. N/ Trinidad. 0 Comment
  CDA1175  Cirsium cymosum T. R. Haig 1960-6-16 s.n. Humboldt Kneeland, near quarry. 0 Comment
  CHSC97934  Cirsium cymosum T. R. Haig 1960-6-16 Humboldt Near quarry at Kneeland. Comment
  HSC94050  Cirsium douglasii var. douglasii B. Villegas 1998-8-5 Humboldt Nr. Berry Summit on Titlow Hill Rd., 4.8 mi. S of Hwy. 299 Comment
  HSC104423  Cirsium occidentale Jenny Lynn Hutchinson 2013-6-27 Humboldt Mt. Andy Comment
  UC1223057  Cirsium occidentale var. candidissimum Joseph P. Tracy 1950-8-4 19257 Humboldt at head of Canoe Creek; Bull Creek State Park, Grasshopper Peak, Canoe Creek Comment
  UC1223058  Cirsium occidentale var. candidissimum Joseph P. Tracy 1950-6-15 18779 Humboldt 5 mi n of Harris (on old Overland Road); Mail Ridge Comment
  HSC94090  Cirsium occidentale var. venustum B. Villegas 1998-8-5 Humboldt Nr. Berry Summit on Titlow Hill Rd, 3.9 mi. S of Hwy. 299 Comment
  UC582533  Cirsium remotifolium var. odontolepis Joseph P. Tracy 1930-7-21 8887 Humboldt Bear River Ridge Northern Coast Ranges, Bear River Ridge 609 Comment
  JEPS2530 Image available Cirsium remotifolium var. odontolepis Jos. P. Tracy 1908-7-22 2909 Humboldt near Low Gap (ridge below Van Duzen and Mad rivers); ; Below Van Duzen & Mad Rivers, near Low Gap, Humboldt & Trinity Cos. 914 Comment
  CAS-BOT-BC164181  Clarkia concinna Doris K. Kildale 1929-5-26 9153 Humboldt Klamath River at Orleans 152 Comment
  HSC32093  Clarkia concinna subsp. concinna D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-17 5700 Humboldt McKeown Ranch, N of Dinsmore Comment
  POM72830  Clarkia purpurea subsp. purpurea P. A. Munz 1925-6-20 9886 Humboldt Garberville Comment
  HSC97934  Clarkia purpurea subsp. quadrivulnera Cara Witte 2007-6-14 282 Humboldt White Oak Opening. Along Kinsey Ridge. Near hunting camp. 1238 Comment
  RSA298976  Clarkia rhomboidea Lincoln Constance 1934-6-15 880 Humboldt Bull Creek Region, South Fork Eel River. Summit of Grasshopper Peak 976 Comment
  UC494167  Claytonia exigua subsp. glauca H. E. Parks and J. P. Tracy 1930-5-26 878 Humboldt Laribee Valley Comment
  CAS-BOT-BC440094  Claytonia perfoliata subsp. perfoliata Doris Kildale 1931-5-10 10547 Humboldt Snow Camp Comment
  HSC78959  Claytonia perfoliata subsp. perfoliata L. P. Janeway, K. Berg 1984-4-11 726 Humboldt N Spit of Humboldt Bay, turnout along Samoa Rd., across from boat ramp just N of Coast Guard Station 3 Comment
  HSC39940  Claytonia rubra subsp. depressa Linda M. Barker 1976-3-22 1336 Humboldt 3 mi. W of Arcata Comment
  HSC17697  Claytonia rubra subsp. depressa D. E. Anderson 1962-3-4 1926 Humboldt About 2 mi. S of Trinidad Comment
  UC486517  Claytonia rubra subsp. rubra H. E. Parks, J. P. Tracy 1930-5-25 876 Humboldt Laribee Valley Comment
  HSC96937  Claytonia rubra subsp. rubra Elizabeth Kimbrough, Whitney Meier 2007-6-13 7 Humboldt Grouse Mtn., 1 mi. E of NF1 on FS Rd. 5N04 1524 Comment
  SEINET198592  Claytonia sibirica H. E. Parks 01421 Humboldt Spruce Cove Trinidad Comment
  HSC73102  Claytonia sibirica J. Detzer 1977-4-8 2 Humboldt S end of Patricks Point State Park, 0.2 mi. W of Hwy. 101, 5 mi. N of Trinidad 61 Comment
  UCD100893  Claytonia sibirica D. Sanchez-Mata; S. Rivas-Martinez, M. Costa and M. Ladero 1998-6-10 s.n. Humboldt Trinidad-Klamath Glenn. Prairie Creek State Park. Prairie Creek Trail. 125 Comment
  UC1196206  Clematis ligusticifolia Joseph P. Tracy July 1896 37 Humboldt near Hydesville (on Yager Creek); Northern Coast Region, Yager Creek 60 Comment
  CAS-BOT-BC499338  Clintonia andrewsiana Doris K. Kildale 1928-6-10 5083 Humboldt Strongs Station, Van Duzen River Comment
  CAS-BOT-BC499387  Clintonia andrewsiana Henry M. Pollard 1936-4-1 s. n. Humboldt Unspecified, Steep Ravine Comment
  CAS-BOT-BC238026  Collinsia Doris Kildale Gillespie 1931-6-7 10601 Humboldt South Fork Mt., Blake Lookout 1726 Comment
  JEPS14933  Collinsia grandiflora H. E. Parks and J. P. Tracy 1930-5-25 741 Humboldt Laribee Valley 762 Comment
  JEPS25056  Collinsia grandiflora Joseph P. Tracy 1922-5-29 6077 Humboldt South Yager Creek Valley 762 Comment
  UC1196766  Collinsia grandiflora Joseph P. Tracy 1933-6-13 12572 Humboldt w Hoopa (near summit of Hoopa Mtn on rd from Hoopa to Bair's); Hoopa Mtn 1066 Comment
  UC594235  Collinsia grandiflora S. K. Harris, J. P. Tracy, and H. S. Yates 1936-6-17 3416 Humboldt Burr Valley; Burr Valley; Buck Mtn 1036 Comment
  HSC66827  Collinsia greenei M. A. Baker 1980-7-11 2808 Humboldt Near Red Mtn. 1433 Comment
  HSC74316  Collinsia greenei M. A. Baker 1980-7-11 2782 Humboldt Near Red Mtn. 1341 Comment
  HSC96243  Collinsia linearis Laurel Goldsmith, Wanda Naylor 2005-6-8 4 Humboldt 1.7 mi. S of Hwy. 299 on Titlow Hill Rd. 980 Comment
  HSC81603  Collinsia rattanii Thomas W. Nelson, Jane P. Nelson 1980-5-25 5265 Humboldt Along road from Dinsmore to Anderson Crossing- McKeown Ranch Rd.- 0.5 mi. NW of McKeown house 823 Comment
  HSC100660  Collinsia rattanii Carl C. Marshall Jul 1887 414 Humboldt Spruce Grove. Comment
  UC427878  Collinsia sparsiflora var. sparsiflora H. E. Parks and J. P. Tracy 1930-5-25 792 Humboldt Larabee Valley 792 Comment
  HSC70399  Collomia heterophylla M. A. Baker 1980-6-7 1851 Humboldt Near Ammon Creek 115 Comment
  SBBG29130  Collomia heterophylla H. E. Parks -May-1933 1152 Humboldt Spruce Cove, Trinidad 76 Comment
  HSC32324  Collomia tracyi D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5663 Humboldt Senteney Rock, a large barren Franciscan Rock along Swayback Ridge. Comment
  HSC73732  Collomia tracyi M. A. Baker 1980-7-19 3001 Humboldt Near Bret Hole. 1814 Comment
  JEPS26236  Collomia tracyi Joseph P. Tracy 1939-8-5 16373 Humboldt Dinsmore's; Van Duzen River 737 Comment
  HSC93530  Comarum palustre Gordon Leppig 1998-6-22 842 Humboldt Big Lagoon County Park, Big Lagoon Bog 2 Comment
  HSC65326  Convolvulus arvensis J. P. Smith 1973-5-26 6810 Humboldt Scotia Bluffs along the Eel River near Rio Dell 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
  HSC6352  Convolvulus arvensis Lincoln Constance 1934-5-27 692 Humboldt S Fork of Eel River, S end of Dyerville Bridge 46 Comment
  HSC5500  Conyza canadensis Paul Shields 1955-10-7 Humboldt Essex Pond, near Fieldbrook Comment
  HSC39677  Corallorhiza maculata Thomas W. Nelson, Jane P. Nelson 1976-6-16 2745 Humboldt Along FS 2S08, between Alder Springs & Pine Mtn. 1494 Comment
  HSC76613  Corallorhiza maculata Teresa Prendusi 1981-6-9 185 Humboldt Near Cedar Camp 1268 Comment
  HSC27513  Corallorhiza maculata J. D. Ackerman, A. Montalvo 1973-7-5 99 Humboldt 17 mi. E of Hoopa, on Grogan Hole Rd. Comment
  HSC45237  Corallorhiza maculata Thomas W. Nelson, Jane P. Nelson 1977-6-19 3516 Humboldt Trail above Alder Springs 1585 Comment
  HSC98347  Corallorhiza striata T. Jimerson, J. Pageau 1979-6-12 527 Humboldt Near Hopkins Butte, close to the town of Orleans. 1036 Comment
  HSC90639  Cordylanthus maritimus subsp. palustris Gail Newton 1983-8-21 3855 Humboldt Elk River Wildlife Area, Eureka. Comment
  UC1409054  Cordylanthus maritimus subsp. palustris Robert F. Thorne and P. Everett 1965-8-7 35209 Humboldt Samoa Peninsula 0 Comment
  POM21053  Cordylanthus pilosus subsp. pilosus L. R. Abrams 1916-7-22 6158 Humboldt Between Little and Big Van Druzen River - Eureka - Red Bluff Road. Comment
  HSC98916  Cordylanthus tenuis subsp. viscidus Cara Witte 2007-7-11 512 Humboldt National Forest 1. Approximately 1 mile south of intersection with 5N01. Near Spike Buck Mountain. 1591 Comment
  HSC5415  Corethrogyne filaginifolia D. E. Anderson 1963-5-25 2494 Humboldt 4 mi. W of Petrolia Comment
  UC1119247  Corethrogyne filaginifolia H. S. Yates 1968-6-16 5668 Humboldt 1.5 mi sw of Samoa; Eureka Quadrangle Comment
  UC494209  Corethrogyne filaginifolia J. Burtt Davy 1899-6-30 6185 Humboldt near Ferndale Comment
  CAS-BOT-BC212012  Cornus nuttallii Doris K. Kildale 1926-7-25 2434 Humboldt Briceland Bridge, 1/2 west of Garberville 114 Comment
  HSC45638  Cornus nuttallii Diane L. Reed 1978-4-22 35 Humboldt Tish Tang Campground, 5 miles north of Willow Creek on State Hwy. 96. Comment
  UC412923  Cornus nuttallii P. E. Goddard 1906-6 692 Humboldt Lasseck Peak Comment
  RSA24326  Cornus sessilis C. B. Wolf 1941-2-28 4048 Humboldt Junction of Willow Creek and its E. fork. 457 Comment
  CAS-BOT-BC210540  Cornus sessilis L. R. Abrams 1918-6-17 7207 Humboldt Between Hoopa & Briars Resort on road to Korbel Comment
  CAS-BOT-BC190003  Cortaderia jubata T. C. Fuller 1966-10-4 15238 Humboldt East side of Big Lagoon. In 1100 acres, slope north above headquarters of Georgia Pacific Lumber Compan. Comment
  UC1103505  Corylus californica Joseph P. Tracy 1909-8-29 3080 Humboldt Humboldt Hill, N side Northern Coast Region, region about Humboldt Bay 0 Comment
  UC1222291  Corylus californica Joseph P. Tracy 1951-7-24 19624 Humboldt Blue Slide. on Van Duzen River 91 Comment
  CAS-BOT-BC180302  Corylus cornuta subsp. californica Joseph P. Tracy 1931-8-16 9611 Humboldt near Briceland 152 Comment
  HSC76276  Corylus cornuta subsp. californica Teresa Prendusi 1981-7-24 468 Humboldt Near Whiteys Peak 1585 Comment
  CHSC102915  Cotoneaster lacteus Arthur Lee Jacobson 2007-8-13 Humboldt North Coast. North of Mill Creek and W of Stagecoach Road, southern part of Trinidad State Beach. 50 Comment
  UC166079  Cotula australis J. P. Tracy 1900-5-26 804 Humboldt Eureka Comment
  CHSC32813  Cotula coronopifolia Lora L. Anderson 1981-4-26 20 Humboldt Ca. 500 yds e of ocean (Moonstone Beach) 0.5 mi w of hwy 101, 11.5 mi nw of Arcata. 0 Comment
  HSC5430  Cotula coronopifolia Francis Winter 1960-5-6 Humboldt Mouth of Mad River, N of Arcata Comment
  SEINET3817856  Cotula coronopifolia Bassett Maguire, Ruth Maguire, C. B. Maguire 1934-6-9 15319 Humboldt Clam beach, 15 miles north Eureka Comment
  UCD130911  Cotula coronopifolia Malcolm A. Nobs; S. Galen Smith 1949-8-3 1163 Humboldt Eel River Valley, 1 mile south of Fields Landing. Comment
  HSC87175  Crassula aquatica K. Grenier 1988-11-16 291 Humboldt North Spit of Humboldt Bay Comment
  UC198581  Crassula aquatica Joseph P. Tracy 1916-5-31 4705 Humboldt Alton Northern Coast Region, Alton 30 Comment
  SEINET13729302  Crassula aquatica Unknown 1912-6-9 3689 Humboldt Plants of Northern Coast Region of Califonia In muddy ground. ALTON, HUMBOLDT COUNTY Altitude 100 to 300 Comment
  HSC6502  Crassula connata D. E. Anderson 1963-3-16 2393 Humboldt Scotia Bluffs Comment
  UCD112977  Crataegus douglasii Louis C. Wheeler 1950-8-14 6780 Humboldt 5 mi. east of Shelter Core. Comment
  RSA125671  Crataegus suksdorfii E. K. Balls 1957-5-25 22602 Humboldt Hwy 36, Van Duzen River, W of Trinity Humboldt County Line. 732 Comment
  CAS-BOT-BC290341  Crepis acuminata Henry M. Pollard 1948-7-31 s.n. Humboldt Orleans Mt. 1828 Comment
  CDA18216  Crepis capillaris G. D. Barbe, T. C. Fuller 1974-6-17 1844 Humboldt North Coast Ranges; Shelter Cove, Upper Pacific Drive, at Sea View Rd. 91 Comment
  SD39858  Crepis capillaris Edith A. Purer 1932-7-30 4683 Humboldt South of Orick. Comment
  CAS-BOT-BC291481  Crepis capillaris E. C. Johnston 1931-8-1 s.n. Humboldt Klamath River to Arcata Comment
  HSC5446  Crepis capillaris L. K. Weld 1967-7-16 2 Humboldt Myrtle Ave. 1 mi. S of Freshwater Corners 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
  HSC56938  Crepis pleurocarpa Overton, Butler 1979-7-23 9412 Humboldt Near Horse Mtn., close to the town of Willow Creek 1478 Comment
  RSA113706  Crepis setosa Joseph P. Tracy 1948-9-20 18215 Humboldt Hoopa Valley 107 Comment
  UC427860  Crocidium multicaule H. E. Parks, J. P. Tracy 1930-5-25 867 Humboldt Laribee Valley Comment
  RSA167430  Crocosmia X crocosmiiflora Joseph P. Tracy 1950-8-31 19344 Humboldt Garden escape at 3rd and I streets. Eureka. Comment
  RSA263019  Crocosmia aurea Bennett, Dunn, Dziekanowski 1976-8-6 477 Humboldt By Highway 101, north side of Orick 30 Comment
  HSC3566  Cryptantha affinis J. P. Tracy, H. E. Parks 1934-6-27 11059 Humboldt Grouse Mtn. Comment
  UC1239663  Cryptantha affinis Joseph P. Tracy 1939-8-5 16386 Humboldt Dinsmore's 737 Comment
  HSC3576  Cryptantha leiocarpa J. W. Johnson 1962-5-27 1381 Humboldt Arcata; at N end near the foredunes, Christensen Farm, Samoa Peninsula Comment
  HSC3587  Cryptantha torreyana H. E. Parks, J. P. Tracy 1934-6-27 11058 Humboldt Grouse Mtn. Comment
  HSC3589  Cryptantha torreyana H. E. Parks, J. P. Tracy 1934-6-27 11058 Humboldt Grouse Mtn. 1433 Comment
  HSC73579  Cryptantha torreyana Gail Newton 1980-7-14 1479 Humboldt Near Last Chance Ridge. 1219 Comment
  HSC63877  Cryptogramma acrostichoides M. A. Baker 1979-6-27 926 Humboldt E of Oregon Creek Comment
  HSC82604  Cryptogramma acrostichoides Thomas W. Nelson 1979-7-11 4990 Humboldt N Trinity Mtn. and ridge to E. 1829 Comment
  SEINET10531493  Cupressus macrocarpa Fred G. Meyer 1938-4-7 Meyer 1397 Humboldt About 20 miles north of Eureka Comment
  UC906745  Cuscuta californica Joseph P. Tracy 1941-8-28 17047 Humboldt near Blake lookout; Northern Coast Ranges, South Fork Mountain 1706 Comment
  UC902066  Cuscuta occidentalis Joseph P. Tracy 1949-8-4 18410 Humboldt Mud Springs Trinity Summit 1341 Comment
  UC562479  Cuscuta subinclusa Joseph P. Tracy 1933-8-6 12960 Humboldt e of Orick (Tomlinson Ranch); Bald Hills 762 Comment
  UCSB24349  Cuscuta subinclusa Tracy, Joseph 1924-7-20 Humboldt Brannan Mt.; on Willow Cr. Road 1005 Comment
  HSC37074  Cymopterus terebinthinus var. californicus R. Sutherland 1976-4-24 Humboldt Garberville Triangle 518 Comment
  UC922013  Cynodon dactylon Joseph P. Tracy 1949-8-18 16427 Humboldt Eureka 15 Comment
  HSC3645  Cynoglossum grande Gerald T. Rood 1962-5-11 8 Humboldt Kneeland Rd., ca. 2.5 mi. W of Barry Rd. Comment
  UCD60123  Cynosurus cristatus L. T. Burcham 1956-7-19 341 Humboldt 1.5 miles northwest of Petrolia. 152 Comment
  HSC9520  Cynosurus echinatus True Hoyle 1967-7-24 29067 Humboldt Oscar Stapp Ranch near Showers Creek and Showers Pass Comment
  UC668034  Cyperus eragrostis Joseph P. Tracy 1935-5-25 13836 Humboldt Fort Seward 106 Comment
  UCD54033  Cyperus eragrostis K. Esau 1934-5-6 s.n. Humboldt Fort Seward. 152 Comment
  CAS-BOT-BC133727  Cypripedium californicum E. P. Chase 1933-7-1 2008 Humboldt Field redacted by CAS, contact the data manager for more information Comment
  UC1196441  Cypripedium californicum Joseph P. Tracy 1926-6-6 7575 Humboldt on road from Hoopa Valley; Northern Coast Ranges, Hoopa Mountain 914 Comment
  HSC98728  Cystopteris fragilis Cara Witte 2007-7-20 563 Humboldt Board Camp Butte. Forest Serivce Road 4E27. 1460 Comment
  UCD136399  Cystopteris fragilis Lincoln Constance 1934-6-2 781 Humboldt Bull Creek Region, South Fork Eel River. Comment
  RSA1438  Cytisus monspessulanus E. R. Johnson 1929-08 1434 Humboldt Eel River. 91 Comment
  CAS-BOT-BC201009  Cytisus scoparius John H. Thomas 1966-3-19 11484 Humboldt Near Westhaven Drive and highway 101, Trinidad 60 Comment
  HSC14668  Cytisus scoparius T. W. Beck 1963-4-22 34 Humboldt Humboldt Meridian. Camp Bauer just outside the entrance, Korbel. Comment
  HSC14670  Cytisus scoparius S. J. Hawks 1965-4-6 21 Humboldt Luffenholtz Beach Comment
  SEINET2153799  Cytisus scoparius K. T. Harper 2002-1 2002 -3 Humboldt Redwood Park, near Orick. Comment
  HSC54606  Dactylis glomerata Overton, Butler 1979-7-24 9690 Humboldt Near Friday Camp, close to the town of Willow Creek. 1250 Comment
  HSC24617  Danthonia californica William J. Ferlatte, B. D. Rogers 1966-6-15 2108 Humboldt Larabee Valley 762 Comment
  UC526685  Danthonia californica var. americana Joseph P. Tracy 1928-6-24 8463 Humboldt valley of South Yager Creek Northern Coast Ranges 762 Comment
  UCD60514  Danthonia californica var. americana R. Tofsrud 1947-6-27 s.n. Humboldt About halfway between Yager and Kneeland on county road. Comment
  UC585991  Datura stramonium Joseph P. Tracy 1924-8-31 6837 Humboldt Klamath River at Bluff Creek; Klamath River at Bluff Creek 91 Comment
  SEINET10454790  Daucus carota Mary Susan Taylor 1977-8-5 Taylor 1432 Humboldt Abundant around bridge over Eel River, at the turnoff from Hwy 1 to Ferndale, in Fernbridge. 2 Comment
  CDA38308  Daucus pusillus T. C. Fuller 1958-6-17 1904 Humboldt Zanone Ranch, Cape Mendocino. 0 Comment
  HSC78607  Daucus pusillus L. P. Janeway, Paul Wilson 1984-5-7 767 Humboldt N Spit of Humboldt Bay, just behind foredunes near 'Flag 1 3 Comment
  UC1196317  Delphinium andersonii Joseph P. Tracy 1930-6-21 8778 Humboldt Larrabee Valley Northern Coast Ranges 701 Comment
  UCD95699  Delphinium decorum K. Esau 1934-5-7 s.n. Humboldt Near Blocksburg 609 Comment
  UC1196322  Delphinium decorum subsp. decorum J. P. Tracy 1904-5-1 2044 Humboldt bluff back of Bucksport; immediate vicinity of Eureka 0 Comment
  HSC24971  Delphinium decorum subsp. tracyi Gerald T. Rood 1962-5-11 6 Humboldt Knneland Rd. 1.0 mi. W of Barry Rd. Comment
  UC1225748  Delphinium hesperium subsp. hesperium Joseph P. Tracy 1948-6-20 18070 Humboldt Willow Creek Trinity River Valley 152 Comment
  OBI10845  Delphinium hesperium subsp. hesperium Joseph P. Tracy 1948-6-20 18070 Humboldt Trinity River Valley at Willow Crk 152 Comment
  HSC100901  Delphinium menziesii Carl C. Marshall Apr 1887 380 Humboldt Hoopa Valley. Comment
  CHSC53294  Delphinium nudicaule L. P. Janeway 1984-5-13 774 Humboldt Along the Kneeland/Bridgeville Road ca 15 mi east of the Kneeland post office just past Lone Star Junction. On a roadcut near Lone Star Creek. 609 Comment
  HSC25008  Delphinium nudicaule J. Sandborg, F. Sandborg Jun 1968 16 Humboldt Bluff Creek near Notice Creek 793 Comment
  HSC24426  Delphinium nudicaule E. C. Murczek 1964-4-4 28 Humboldt 10 mi. N of Hoopa Comment
  UC1196332  Delphinium nudicaule Joseph P. Tracy 1921-6-19 5830 Humboldt Berry Mtn. Northern Coast Ranges 914 Comment
  HSC73733  Delphinium nuttallianum M. A. Baker 1980-7-19 3019 Humboldt Near Bret Hole. 1814 Comment
  CAS-BOT-BC121970  Delphinium trolliifolium Carl B. Wolf 1937-6-19 8916 Humboldt 3 miles NE of Little Van Duzen River on road to Dinsmore's. 762 Comment
  CAS-BOT-BC194295  Deschampsia cespitosa subsp. cespitosa Joseph P. Tracy 1904-7-31 2129 Humboldt Eureka 60 Comment
  HSC37256  Deschampsia elongata Lon Hall 1975-6-19 393 Humboldt About 2 mi. N of Shelter Cove Rd. on Horse Mtn. Rd. 549 Comment
  UC1225761  Descurainia incisa subsp. incisa Joseph P. Tracy 1947-8-24 17921 Humboldt near Box Camp (along trail to Water Dog Lakes); Trinity Summit 1676 Comment
  CHSC95018  Dicentra formosa K. Lang; J. Lang 2005-3-14 28 Humboldt Trinidad, N. California coast 51 Comment
  SEINET12103158  Dicentra formosa J. P. Tracy 1950-1 18720 Humboldt Near Mountain Glen, 7 mi S of Ferndale 610 Comment
  HSC65838  Dicentra formosa subsp. oregana Gail Newton 1980-6-16 182 Humboldt Near Onion Mtn. 204 Comment
  CAS-BOT-BC253636  Dichanthelium acuminatum subsp. acuminatum R. Spellenberg 1966-9-8 1630 Humboldt Bank of S Fork Eel River at Highway 101, 5 miles S of Garberville Comment
  SEINET12053836  Dichelostemma capitatum L. K. Henry 1971-1 Humboldt along Rt. 36, 2 mi E of Dinsmore, in Six Rivers National Forest Comment
  UC275549  Dichelostemma capitatum Joseph P. Tracy 1923-6-25 6375 Humboldt Table Bluff Northen Coast Ranges 91 Comment
  HSC44758  Dichelostemma congestum Maralyn O'Meara 1972-6-8 81 Humboldt Along Bald Hills Rd, 16.4 mi. E of junction with Hwy. 101 Comment
  HSC60039  Dichelostemma ida-maia M. A. Baker 1978-5-6 495 Humboldt 2 km. W of Weitchpec along Klamath River. Comment
  UC1222690  Dichelostemma ida-maia Joseph P. Tracy with A. H. Murphy 1951-6-26 19568 Humboldt vicinity Twin Lakes and Snow Camp; Twin Lakes Comment
  RSA53854  Dichelostemma ida-maia Henry M. Pollard 1946-8-16 s.n. Humboldt Across river from Orleans. Comment
  HSC6401  Dichondra donelliana J. P. Tracy 1932-3-20 9785 Humboldt Near ocean, Trinidad 3 Comment
  RSA183603  Digitalis purpurea R. D. Modafferi 1965-5-13 75 Humboldt 0.2 miles north of Trinidad on Trinity Street. 305 Comment
  SEINET12269089  Digitalis purpurea K. S. Erdman 1970-1 4770 Humboldt Counts Hill Prairie on Bald Hill Rd Se of Orick 13 mi 853 Comment
  CAS-BOT-BC150349  Diplacus aurantiacus L. R. Abrams 1916-7-18 6141 Humboldt At Trinidad Comment
  SEINET8221173  Diplacus aurantiacus L. R. Abrams 1916-7-18 6072 Humboldt Fortuna. Comment
  JEPS61826  Disporum hookeri W. L. Jepson 1932-8-8 16489 Humboldt Chaney ranch, Canoe Creek Comment
  JEPS61836  Disporum smithii W. L. Jepson 1932-7-27 16477 Humboldt Bull Creek Comment
  UC1197653  Disporum smithii J. P. Tracy 1906-4-22 2417 Humboldt immediate vicinity of Eureka 0 Comment
  UC30078  Disporum smithii Mrs. M. H. Manning 1901-4-1 12 Humboldt near Hupa Comment
  UCR26493  Disporum smithii A. C. Sanders 1981-8-6 2304 Humboldt Patrick's Point State Park, north of Eureka 30 Comment
  HSC17909  Dodecatheon hendersonii D. E. Anderson 1965-4-24 3545 Humboldt Ca. 2 mi. E of Berry Summit along Hwy. 299 Comment
  JEPS14476  Downingia cuspidata Joseph P. Tracy 1935-5-25 13843 Humboldt Fort Seward 106 Comment
  RSA654125  Downingia yina Beecher Crampton 1956-6-26 3651 Humboldt Margin of Snow's Lake, 3.5 miles east of Seigler Springs Comment
  UC1222159  Downingia yina Joseph P. Tracy 1951-6-21 19527 Humboldt back of Everett Beck house (formerly Geoge Gray's) (on ranch at Hydesville, bed of former Goose Lake); Goose Lake, Hydesville Comment
  HSC63033  Drymocallis glandulosa J. P. Smith, J. O. Sawyer 1973-5-12 6668 Humboldt 2 mi. from Redwood Creek on Hoopa Rd. Comment
  HSC57850  Drymocallis glandulosa var. reflexa G. L. Clifton 1979-7-31 11357 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  CAS-BOT-BC157794  Drymocallis lactea var. lactea Joseph P. Tracy 1932-7-11 10406 Humboldt At Corral Prairie 1524 Comment
  HSC89449  Dryopteris arguta P. A. Daly 1984-5-8 16 Humboldt Trinidad Head 61 Comment
  JEPS4047  Dryopteris expansa Roland A. Dede 1952-12-6 2834 Humboldt Ferndale Comment
  UCSB30620  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
  HSC6461  Dudleya farinosa D. E. Anderson 1961-9-2 1773 Humboldt 3 mi. S of Cape Mendocino 3 Comment
  UC1103264  Echinochloa crus-galli Joseph P. Tracy 1934-8-14 13569 Humboldt Alton; Northern Coast Region 30 Comment
  UC1103265  Echinochloa crus-galli Joseph P. Tracy 1932-10-2 10860 Humboldt Redwood Creek near Bair's Redwood Creek; Northern Coast Range, Redwood Creek 213 Comment
  UC175612  Echinochloa crus-galli Joseph P. Tracy 1911-7-11 3507 Humboldt Hoopa Valley; Northern Coast Ranges, Hoopa Valley 152 Comment
  CAS-BOT-BC113438  Eleocharis bella Henry M. Pollard 1946-8-22 s.n. Humboldt Ullathorne Riffle, Klamath River, Orleans region. Comment
  CAS-BOT-BC112838  Eleocharis macrostachya David Daniels Keck 1938-8-5 4768 Humboldt Big Lagoon, on shore in drying clay mud. Comment
  HSC7317  Eleocharis macrostachya J. Good 1964-5-15 44 Humboldt Mad River Park, 50 yds. N of parking lot Comment
  UC303018  Eleocharis pachycarpa Joseph P. Tracy 1926-7-25 7757 Humboldt Patrick's Point Northern Coast Ranges 30 Comment
  HSC7346  Eleocharis parvula D. E. Anderson 1961-9-9 1791 Humboldt Along S end of Hwy. 101 causeway over Big Lagoon Comment
  HSC98801  Elymus elongatus Cara Witte 2007-7-12 519 Humboldt Along Forest Service Road 5N10. 1.25 miles south of intersection with 5N41. 1283 Comment
  UC526781  Elymus elymoides subsp. elymoides Joseph P. Tracy 1932-7-14 10531 Humboldt Corral Prairie Klamath Mountains, Trinity Summit 1524 Comment
  HSC58627  Elymus elymoides var. elymoides Overton, Butler 1979-7-31 11458 Humboldt Near Water Dog Lakes, close to the town of Hoopa 1830 Comment
  RSA129277  Elymus glaucus Joseph P. Tracy 1935-7-21 14119 Humboldt mouth of Bremer Creek; Trinity River Valley, at Willow Creek 152 Comment
  CAS-BOT-BC203472  Elymus glaucus subsp. glaucus Joseph P. Tracy 1935-6-22 13958 Humboldt Holmes Flat 60 Comment
  HSC9747  Elymus glaucus subsp. virescens J. P. Tracy 1927-6-26 8213 Humboldt Stone Lagoon Comment
  UC1103131  Elymus multisetus Joseph P. Tracy 1912-8-3 3962 Humboldt opposite Buck Mountain; Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  UC526785  Elymus multisetus Joseph P. Tracy 1933-7-25 12893 Humboldt Grouse Mountain North Coast Ranges 1524 Comment
  HSC102236  Elymus ponticus M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-4 1160 Humboldt Andy's Camp 1564 Comment
  CAS-BOT-BC204329  Elymus trachycaulus subsp. trachycaulus Joseph P. Tracy 1926-7-5 7736 Humboldt Valley of South Yager Creek 762 Comment
  UC1103292  Elytrigia repens Joseph P. Tracy 1937-7-17 15434 Humboldt Eureka 60 Comment
  CHSC110737  Enemion stipitatum Dean Wm. Taylor 2011-5-4 21117 Humboldt Vicinity of Dinsmore; Forest Road 1N30 (Bick Mountain Road) about 0.5 miles SE from junction with Highway 36. 737 Comment
  RSA0049661  Enemion stipitatum Dean Wm. Taylor 2011-5-4 21117 Humboldt Vicinity of Dinsmore; Forest Road 1N30 (Bick Mountain Road) about 0.5 miles SE from junciton with Highway 36 734 Comment
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May 17 2019
  HSC56983  Epilobium brachycarpum Overton, Marvin Butler 1979-7-23 9524 Humboldt Near Titlow Hill, close to the town of Willow Creek. 1280 Comment
  HSC99054  Epilobium brachycarpum Cara Witte 2008-7-30 979 Humboldt National Forest 1. 2 miles north of intersection with Forest Service Road 4N09. 1267 Comment
  HSC55351  Epilobium canum subsp. latifolium Griswold, Butler 1979-7-12 7272 Humboldt Near Cedar Creek, close to the town of Willow Creek 1158 Comment
  UC205233  Epilobium canum subsp. latifolium Joseph P. Tracy 1919-9-23 5288 Humboldt Trinity Summit Northern Coast Ranges 1828 Comment
  HSC27041  Epilobium ciliatum subsp. ciliatum Brad Klipfel 1973-8-25 288 Humboldt Near Lazy L Ranch, Fickle Hill Rd. Comment
  POM92412  Epilobium ciliatum subsp. ciliatum L. R. Abrams 1922-6-25 8231 Humboldt 2 miles south of Fortuna Comment
  HSC99438  Epilobium ciliatum subsp. glandulosum K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-7 88 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  SD219078  Epilobium ciliatum subsp. glandulosum Robert F. Thorne, P. Everett 1965-8-9 35347 Humboldt Along Highway 101, ca. 3.0 miles north of Eureka. 2 Comment
  RSA22708  Epilobium ciliatum subsp. watsonii H. E. Parks, S. T. Parks 1937-07 24050 Humboldt Spruce Cove, Trinidad. 64 Comment
  UC1951301  Epilobium ciliatum subsp. watsonii Robert F. Thorne and P. Everett 1965-8-5 35153 Humboldt Samoa Dunes. Comment
  UC505124  Epilobium densiflorum Joseph P. Tracy 1932-10-12 10872 Humboldt Miranda' along watercourse Northern Coast Ranges, South Fork of Eel River 121 Comment
  RSA181876  Epilobium hallianum Joseph P. Tracy 1930-7-16 8977 Humboldt Northern Coast Ranges: South Fork Mountain; in wet meadow at McKay Camp 1677 Comment
  HSC54877  Epilobium lactiflorum G. L. Clifton, Griswold 1979-7-25 10869 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1784 Comment
  HSC71824  Epilobium minutum Thomas W. Nelson, Jane P. Nelson 1980-6-27 5938 Humboldt Along old trail to pond above Alder Spring, 0.5 mi. N of campground 1555 Comment
  CAS-BOT-BC171845  Epilobium septentrionale Joseph P. Tracy 1933-9-9 13075 Humboldt Along S. Fork of Eel River, vicinity of Garberville 121 Comment
  UC1225850  Epipactis gigantea Joseph P. Tracy 1948-8-22 18107 Humboldt Blue Slide Van Duzen River 91 Comment
  UC503074  Equisetum hyemale subsp. affine Joseph P. Tracy 1927-8-7 8316 Humboldt at Willow Creek Trinity River Valley; Northern Coast Ranges, Trinity River Valley 152 Comment
  HSC70639  Equisetum telmateia subsp. braunii R. York 1980-5-18 594 Humboldt Near Black Mtn 792 Comment
  HSC882  Equisetum telmateia subsp. braunii D. E. Anderson 1962-2-10 1920 Humboldt 1.5 mi. S of Trinidad Comment
  HSC79438  Equisetum telmateia subsp. braunii Kenneth Clark 1980-6-14 699 Humboldt Shelter Cove, W slope above Dead Man's Gulch 91 Comment
  MACF015290  Equisetum telmateia subsp. braunii Barbara Joe 1958-8-24 27239 Humboldt Garbervills Comment
  MACF019709  Equisetum telmateia subsp. braunii C. V. Morton 1955-8-23 27237 Humboldt Roadside near Province Creek State Park entrance Comment
  UC212872  Eragrostis hypnoides Joseph P. Tracy 1920-8-15 5367 Humboldt Klamath River mouth of Bluff Creek (at mouth of Bluff Creek); Northern Coast Ranges, , Bluff Creek 152 Comment
  UCD63880  Eragrostis mexicana subsp. virescens Joseph P. Tracy 1950-9-22 19372 Humboldt Klamath River, near Slate Creek. Below Orleans 8 miles. 121 Comment
  POM356838  Erechtites minimus B. C. Templeton 1931-10-15 s.n. Humboldt Eureka Comment
  SD40101  Erechtites prenanthoides Edith A. Purer 1932-7-27 4135 Humboldt Sand dunes. Comment
  HSC57936  Eremogone congesta var. suffrutescens G. L. Clifton, Griswold 1979-7-31 11590 Humboldt Near Trinity Summit Guard Station, close to Hoopa 1884 Comment
  UC581743  Erigeron aliceae Joseph P. Tracy 1930-7-18 9035 Humboldt South Fork Mountain South Fork Mountain (near McKay Camp) 1676 Comment
  UC1199403  Erigeron foliosus var. confinis Joseph P. Tracy 1927-5-14 8006 Humboldt near South Fork; Trinity River Valley 182 Comment
  UC774989  Erigeron foliosus var. confinis Carl B. Wolf 1937-8-13 9218 Humboldt 8 mi e Hoopa Valley (on new road towards Trinity summit); North Coast Range 1219 Comment
  UC34181  Erigeron foliosus var. confinis Harley P. Chandler 1901-6-1 1427 Humboldt Klamath River 243 Comment
  CAS-BOT-BC300674  Erigeron foliosus var. mendocinus Alice Eastwood; John Thomas Howell 1937-6-22 4731 Humboldt Near Alder Point Comment
  CAS-BOT-BC300682  Erigeron foliosus var. mendocinus Alice Eastwood 1921-7-21 10660 Humboldt Vanduzen [Van Duzen] River Comment
  HSC46953  Erigeron glaucus J. P. Smith, Thomas W. Nelson 1977-6-30 9208 Humboldt Samoa Peninsula just E of the drag strip 6 Comment
  UC166099  Erigeron glaucus J. P. Tracy 1900-7-4 888 Humboldt sand hills of ocean beach at Samoa (opp. Eureka) Comment
  UC164848  Erigeron inornatus var. inornatus Joseph P. Tracy 1911-7-8 3442 Humboldt near mouth of Willow Creek (valley of Trinity River); Trinity River Valley 152 Comment
  HSC102241  Erigeron inornatus var. inornatus Sydney Carothers 2011-9-17 Humboldt Bret Hole; 1.1 km SW of Trinity Summit 1579 Comment
  UC581719 Image available Erigeron klamathensis Joseph P. Tracy 1937-7-24 15515 Humboldt 2 mi se Devil's Hole; Trinity Summit 1584 Comment
  HSC104433  Erigeron maniopotamicus Bianca Hayashi 2013-6-11 Humboldt Twin Lakes area, north of Board Camp Mountain 1280 Comment
  UCD20386  Erigeron philadelphicus K. Esau 1934-5-6 s.n. Humboldt Fort Seward. Comment
  HSC100373  Erigeron robustior D. Decker 2010-7-28 Humboldt Dinsmore, off 1N08 on Buck Mtn. 1353 Comment
  HSC55092  Eriogonum compositum G. L. Clifton, Griswold 1979-7-31 11779 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa. 1845 Comment
  HSC74726  Eriogonum compositum Gail Newton 1981-7-23 2275 Humboldt Near Bug Creek Butte 1494 Comment
  CAS-BOT-BC248810  Eriogonum compositum var. compositum L. B. Kildale 1930-8-3 10343 Humboldt Chaparral Mt. at Bug Creek 914 Comment
  UC55504  Eriogonum compositum var. compositum Joseph Burtt Davy and Walter C. Blasdale 1899-6-19 5672 Humboldt Hoopa Mt. Comment
  HSC26237  Eriogonum latifolium J. P. Smith 1971-10-6 4979 Humboldt End of Murray Rd. in McKinleyville. Comment
  SBBG53807  Eriogonum latifolium C. M. Hoak 1931-7-14 Humboldt above Eureka Comment
  UC418996  Eriogonum latifolium H. E. Parks 1924-8-5 2454 Humboldt sand dunes, Little River lagoon Little River lagoon Comment
  UC774621  Eriogonum latifolium Carl B. Wolf 1937-9-12 9331 Humboldt Clam Beach 7 Comment
  UCD100327  Eriogonum latifolium Linda M. Barker 1976-6-22 1615 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  UCR122372  Eriogonum latifolium George K. Helmkamp, E. A. Helmkamp 2001-7-8 7016 Humboldt North Coast, Samoa Peninsula, 2.6 miles south of CA Hwy 255 bridge across Humboldt Bay 15 Comment
  HSC17298  Eriogonum latifolium D. E. Anderson 1961-9-22 1829 Humboldt Comment
  CAS-BOT-BC259528  Eriogonum luteolum var. luteolum Henry M. Pollard 1943-8-1 s.n. Humboldt Orleans Comment
  CAS-BOT-BC259534  Eriogonum luteolum var. luteolum Alice Eastwood 1921-7-21 10677 Humboldt Vanduzen [Van Duzen] River Comment
  HSC74288  Eriogonum nudum M. A. Baker 1980-7-23 3194 Humboldt Near Orleans Mtn. 1859 Comment
  CAS-BOT-BC261495  Eriogonum nudum var. nudum Harley P. Chandler 1901-6-1 1491 Humboldt Klamath River 304 Comment
  HSC35618  Eriogonum nudum var. nudum Thomas W. Nelson, B. Reinhardt 1975-7-30 2114 Humboldt E of Pilot Rock Comment
  UC370871  Eriogonum nudum var. oblongifolium Joseph P. Tracy 1918-7-6 5044 Humboldt near Humboldt-Mendocino County Line (South Fork of Eel River); Northern Coast Ranges, South Fork of Eel River 152 Comment
  CAS-BOT-BC261725  Eriogonum nudum var. oblongifolium Doris K. Kildale 1926-7-22 2422 Humboldt Metropolitan, bluffs near Canyon Park Comment
  UC77671  Eriogonum nudum var. oblongifolium J. W. Blankinship June 1893 Humboldt Comment
  CAS-BOT-BC269868  Eriogonum nudum var. pubiflorum Carl D. Duncan 1920-9-21 316 Humboldt In the vicinity of Hoopa Comment
  SD42294  Eriogonum nudum var. pubiflorum Carl B. Wolf 1937-9-8 9300 Humboldt North Coast Range, Bull Creek-Petrolia Road, 11 Mi. W. of Redwood Highway 305 Comment
  CAS-BOT-BC267967  Eriogonum umbellatum var. argus Doris K. Kildale 1925-8-16 1219 Humboldt Trinity Summit 1917 Comment
  CAS-BOT-BC267969  Eriogonum umbellatum var. argus Henry M. Pollard 1946-9-2 s.n. Humboldt Orleans Mt. 1524 Comment
  RSA53800  Eriogonum umbellatum var. argus H. M. Pollard 1946-9-2 s.n. Humboldt Orleans Mts. 1524 Comment
  CAS-BOT-BC444000  Eriogonum umbellatum var. nelsoniorum James L. Reveal 2001-7-18 8346 Humboldt Along U.S. Forest Service Road 1 northwest of Grouse Mountain at milepost 14.3, about 10.3 air miles southwest of Sayler 1371 Comment
  SEINET13095713  Eriogonum umbellatum var. nelsoniorum James L. Reveal 2001-7-18 8345 Humboldt Along U.S. Forest Service Road 1 at south end of Whiting Ridge, about 0.5 air miles west-northwest of High Salt Ground and 9.3 air miles west of Hyampom. 1296 Comment
  SEINET5333035  Eriogonum umbellatum var. nelsoniorum J. L. Reveal 2001-7-18 8346 Humboldt Along U.S. Forest Service Road 1 northwest of Grouse Mountain at milepost 14.3, about 10.3 air miles southwest of Salyer 1372 Comment
  HSC55053  Eriogonum umbellatum var. stellatum G. L. Clifton, Griswold 1979-7-31 11584 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa Comment
  CAS-BOT-BC301015  Eriophyllum lanatum var. achilleoides Doris K. Kildale 1926-5-9 1980 Humboldt Kneeland Prairie 762 Comment
  UC34551  Eriophyllum lanatum var. achilleoides Chesnut and Drew 1888-7-12 Humboldt Jarnigan's Comment
  UC535728  Eriophyllum lanatum var. arachnoideum Eleanor Armstrong 1934-8-30 1180 Humboldt creek bed Richardson Grove 121 Comment
  HSC74750  Eriophyllum lanatum var. grandiflorum Gail Newton 1981-7-10 2228 Humboldt Near Board Camp Butte 1494 Comment
  CAS-BOT-BC301686  Eriophyllum lanatum var. lanceolatum Henry M. Pollard 1948-7-19 s.n. Humboldt Orleans to Van Fleet Ranch Comment
  RSA846  Eriophyllum staechadifolium E. R. Johnson 1928-8-25 1144 Humboldt Eureka Comment
  SEINET12118220  Eryngium aristulatum J. P. Tracy 1912-1 3777 & 4001 Humboldt Alton 91 Comment
  HSC85821  Erysimum capitatum David Munger, Tallchief Comet, Jeff Dunk 1987-5-11 101 Humboldt Titlow Hill Rd., 1 mi. from Hwy. 299 intersection Comment
  HSC53878  Erysimum capitatum var. capitatum Terry Griswold, Marvin Butler 1979-7-10 6359 Humboldt Near Board Camp Mtn., close to the town of Willow Creek 1372 Comment
  HSC57415  Erysimum capitatum var. capitatum G. L. Clifton, Terry Griswold 1979-7-26 10177 Humboldt Near Salmon Mtn., close to the town of Forks of Salmon 2058 Comment
  HSC64123  Erysimum capitatum var. capitatum J. P. Smith 1973-5-26 6791 Humboldt Scotia Bluffs along the Eel River near Rio Dell. Comment
  JEPS53543  Erysimum menziesii Joseph P. Tracy 1906-5-13 2452 Humboldt sand dunes of ocean beach Northern Coast Region, Humboldt Bay Comment
  HSC100889  Erythronium Carl C. Marshall Apr 1887 357 Humboldt Near Lupton's Redwood. Comment
  UC1222542  Erythronium californicum Joseph P. Tracy 1950-4-20 18616 Humboldt two mi w Dinsmore's (lower foothills of nw slope of mountain); Buck Mountain 762 Comment
  HSC100888  Erythronium hartwegii Carl C. Marshall Jul 1886 334 Humboldt Trinity summit E of Hoopa. Comment
  HSC44870  Erythronium oregonum subsp. leucandrum J. P. Smith, J. O. Sawyer 1973-5-12 6695 Humboldt 6.1 mi. from Redwood Creek on Hoopa Rd. Comment
  HSC26879  Eschscholzia californica Clifton Raymond Chesbrough 1973-6-19 86 Humboldt 1/2 mi. S of Trinidad along the coast Comment
  HSC97441  Eschscholzia californica Ivy Watson 2008-10-5 45 Humboldt Blue Lake, 500 m upstream of the Hatchery Rd. bridge. 22 Comment
  OBI69925  Eucalyptus globulus Jenn Yost, Matt Ritter 2008-4-1 41 Humboldt Sewell R. off 101, Weott Comment
  HSC58800  Eucephalus ledophyllus G. L. Clifton, Griswold 1979-7-31 11593 Humboldt Near Trinity Summit Guard Station, close to Hoopa 1884 Comment
  RSA0024550  Eucephalus ledophyllus var. covillei Joseph P. Tracy 1919-9-18 5227 Humboldt Trinity Summit. 1890 Comment
  CDA15444  Euchiton gymnocephalus R. Spadoni 1998-8-15 s.n. Humboldt North Coast; Eureka. Comment
  CDA18072  Euchiton gymnocephalus R. Spadoni 1999-7-1 s.n. Humboldt Eureka. 0 Comment
  UCD132296  Euchiton sphaericus John Thomas Howell 1956-8-29 12888 Humboldt Eel River 16 miles north of Garberville. Comment
  HSC83990  Euphorbia helioscopia L. P. Janeway, C. K. Geldin-Meyers 1983-4-15 222 Humboldt Field around the new Science and Engineering Bldg., HSU campus 30 Comment
  POM282192  Euphorbia lathyris Lyman Benson 1928-7-12 474 Humboldt Weott Ranger Station; Mt.Range: Seaward N Coast; Watershed: South Fork Eel River. 61 Comment
  CAS-BOT-BC312206  Eurybia radulina Carl B. Wolf 1937-9-8 9301 Humboldt 11 mi. W. of Redwood Highway, Bull Creek - Petrolia Road, North Coast Range 304 Comment
  CAS-BOT-BC310679  Euthamia occidentalis Joseph P. Tracy 1927-10-8 8389 Humboldt Arcata Bottom 15 Comment
  CAS-BOT-BC413855  Fallopia sachalinensis T. C. Fuller 1960-8-25 4973 Humboldt W/Hwy 101, 1/4 mile N/Humboldt Hill Rd., Eureka Comment
  HSC91888  Festuca arundinacea E. Mackey 1987-7-19 Humboldt Patrick's Point State Park Comment
  UC187110  Festuca elmeri Joseph P. Tracy 1908-6 2741 Humboldt opposite Buck Mountain; Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  HSC32230  Festuca idahoensis J. O. Sawyer 1970-6-24 2231 Humboldt Ridge on Big Hill Rd., E of Hoopa 1189 Comment
  UC1103726  Festuca idahoensis Joseph P. Tracy 1941-6-15 16909 Humboldt Wilder Ridge 609 Comment
  UC70909  Festuca idahoensis Joseph Burtt Davy and Walter C. Blasdale 1899-6-27 5877 Humboldt Martins Ferry Comment
  HSC90039  Festuca occidentalis Andrew Enberg, Brad Penkala, Dan Scofield 1990-4-28 66 Humboldt Hwy. 299, 4 mi. W of Burnt Ranch 259 Comment
  RSA123495  Festuca occidentalis H. S. Yates 1936-6-17 5700 Humboldt Lower N.W. slope of Buck Mountain 793 Comment
  CAS-BOT-BC278968  Festuca rubra Joseph P. Tracy 1911-7-16 3531 Humboldt At Eureka 60 Comment
  HSC65121  Festuca rubra J. P. Smith 1973-5-26 6880 Humboldt Scotia Bluffs along the Eel River near Rio Dell. Comment
  UC247503  Festuca rubra A. S. Hitchcock 1915-7-13 469 Humboldt back of Humboldt Bay; Eureka Comment
  UC1103704  Festuca subulata Joseph P. Tracy 1936-6-17 14945 Humboldt nw slope Buck Mountain 792 Comment
  UC1103705  Festuca subuliflora Joseph P. Tracy 1901-6-10 1134 Humboldt Eureka Northern Coast Region 0 Comment
  RSA134597  Fragaria californica Percy C. Everett 1959-10-25 23962 Humboldt 14 miles W of Willow Creek on Hwy 299 to Arcata. 503 Comment
  SD39959  Fragaria chiloensis Charlotte M. Hoak 1931-7-14 2103 Humboldt Eureka, sand dunes on bar Comment
  UC154223  Fragaria chiloensis Joseph P. Tracy 1904-4-24 2025 Humboldt Ocean Beach, sand dunes Humboldt Bay Comment
  HSC102047  Fragaria virginiana M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-13 950 Humboldt Along trail from Rustic Camp to Patterson Meadows 1534 Comment
  HSC31219  Frangula californica D. E. Anderson 1972-6-20 5730 Humboldt Along the Redwood Valley-Hoopa Rd., E of the summit. Comment
  HSC41331  Frangula californica Brad Klipfel 1974-9-17 572 Humboldt Horse Mountain Comment
  CAS-BOT-BC52732  Frangula californica subsp. californica L. R. Abrams 1918-6-16 7138 Humboldt Willow Creek Comment
  CAS-BOT-BC52743  Frangula californica subsp. californica Doris K. Kildale 1927-7-3 3653 Humboldt Willow Creek Flat 152 Comment
  LA207729  Frangula californica subsp. californica Carl B. Wolf; 1934-6-30 5842 Humboldt Back of Shelter Cove 60 Comment
  CAS-BOT-BC59952  Frangula purshiana Doris Kildale Gillespie 1932-9-1 4205 Humboldt Eureka, on S St. 1 block no. of Henderson St. 30 Comment
  CAS-BOT-BC59964  Frangula purshiana W. R. Dudley 1899-6-19 s.n. Humboldt Scotia. 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
  CAS-BOT-BC217695  Fraxinus latifolia Doris K. Kildale 1926-4-18 1783 Humboldt Bridgeville 228 Comment
  HSC38787  Fritillaria purdyi J. P. Smith 1976-5-30 8826 Humboldt Near Black Rock on road to Clear Lake 1524 Comment
  HSC71806  Fritillaria recurva Thomas W. Nelson, Jane P. Nelson 1980-6-27 5949 Humboldt Along low ridge NE of small vernal pond at N base of Red Lassic 1677 Comment
  UC1196095  Galium aparine Joseph P. Tracy 1935-7-23 14166 Humboldt lower end Brett Hole; Trinity Summit 1584 Comment
  HSC95390  Galium aparine Andrea Pickart 2002-7-21 188 Humboldt Along entrance to Lanphere Dunes at end of Lanphere Rd. Comment
  HSC41599  Galium bolanderi Thomas W. Nelson, Jane P. Nelson 1977-8-6 3705 Humboldt Above Alder Springs 1555 Comment
  JEPS81017  Galium divaricatum Thomas W. Nelson and Jane P. Nelson 1977-9-4 3746 Humboldt in cultivated area town of Willow Creek Comment
  UC1225914  Galium divaricatum Joseph P. Tracy 1946-7-13 17614 Humboldt 5 mi e Carlotta (by old Strong's District School House) 60 Comment
  UC1225915  Galium muricatum Joseph P. Tracy 1942-7-1 17359 Humboldt opposite Buck Mountain (along river); Van Duzen River, Dinsmore's 762 Comment
  JEPS6496  Galium parisiense W. L. Jepson 1902-6 1981 Humboldt Hupa Comment
  UC1196094  Galium parisiense Joseph P. Tracy 1946-8-25 17645 Humboldt Alton to Fortuna (on gravel bars); Eel River 15 Comment
  HSC58008  Galium triflorum G. L. Clifton 1979-7-31 11804 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 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-BC303400  Gamochaeta ustulata Ashley C. Browne 1936-6-11 s.n. Humboldt Patrick's Point State Park Comment
  UC1199343  Gamochaeta ustulata Joseph P. Tracy 1935-5-25 13835 Humboldt Fort Seward 106 Comment
  HSC72815  Garrya buxifolia Gail Newton 1980-7-24 1774 Humboldt Near Somes Mtn. 1615 Comment
  UC906741  Garrya elliptica Joseph P. Tracy 1943-7-18 17441 Humboldt bank of Big Lagoon 6 Comment
  RSA89596  Garrya fremontii M. F. Moseley 1952-8-21 346 Humboldt Along western valley wall of Willow Creek, mostly within Hoopa Indian Reservation, upstream from Willow Creek Village. Comment
  UC1193366  Garrya fremontii P. Zinke 1950-10-9 183 Humboldt e side King Peak 1188 Comment
  SEINET12518332 Image available Gastridium ventricosum Harley P. Chandler 1901-1 1506 Humboldt Klamath River, North Coast Ranges 427 Comment
  CAS-BOT-BC58923  Gaultheria shallon Elmer I. Applegate 1923-9-10 3985 Humboldt Martin's Ferry, Klamath River Comment
  UC21946  Gaultheria shallon unknown 1894-8-6 Humboldt Eureka Comment
  UC719770  Gaultheria shallon Rogers McVaugh 1941-8-3 6219 Humboldt 1 1/4 mi s of Headquarters of Patrick's Point State Park Comment
  HSC55073  Gayophytum diffusum subsp. parviflorum G. L. Clifton, Griswold 1979-7-31 11657 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1719 Comment
  JEPS27564  Gayophytum diffusum subsp. parviflorum Joseph P. Tracy Jul 16 1930-Jul 19 1930 9051 Humboldt along summit near Blake Lookout; Northern Coast Ranges, South Fork Mountain 1737 Comment
  UC1196966  Gayophytum diffusum subsp. parviflorum Joseph P. Tracy 1933-7-26 12914 Humboldt Grouse Mountain North Coast Ranges 1524 Comment
  UC183697  Gayophytum diffusum subsp. parviflorum Joseph P. Tracy 1912-7-31 3925 Humboldt Buck Mountain Northern Coast Ranges (near the summit) 1524 Comment
  UC562499  Gayophytum diffusum subsp. parviflorum Joseph P. Tracy 1933-8-30 13047 Humboldt Grouse Mountain North Coast Ranges 1524 Comment
  UC202459  Gayophytum heterozygum Joseph P. Tracy 1919-9-18 5248 Humboldt Trinity Summit Northern Coast Ranges 1524 Comment
  HSC14650  Genista monspessulana Francis Winter 1960-3-26 Humboldt Samoa Pennisula, 3 mi. N of U.S. Coast Guard Station. Comment
  HSC15524  Genista monspessulana D. La Conte 1970-8-10 4 Humboldt Comment
  UC1198638  Gentiana affinis var. ovata J. P. Tracy 1896-8 15 Humboldt immediate vicinity Eureka; Rick's Prairie 0 Comment
  UC1198639  Gentiana affinis var. ovata Joseph P. Tracy 1913-9-9 4401 Humboldt prairies at s end Big Lagoon; Northern Coast Ranges 30 Comment
  RSA13517  Gentiana newberryi H. E. Parks 1931-07 1052 Humboldt Bishop Pine Lodge, Trinidad. 76 Comment
  CAS-BOT-BC217417  Gentiana plurisetosa D. H. Esplin 1969-10-14 20 Humboldt One mile north of North Trinity Mountain, Six Rivers N.F. 1828 Comment
Read comments
Dec 21 2017
  UC179966  Gentiana sceptrum Joseph P. Tracy 1914-9-6 4610 Humboldt between High Prairie and Snow Camp; Northern Coast Ranges, Bald Mountain 1219 Comment
  UCD23455  Gentiana sceptrum K. Niles 1950-9-20 s.n. Humboldt Big Lagoon. Comment
  UCR80278  Gentiana sceptrum R. S. Woglum 1938-8-29 2038 Humboldt North Coast, grounds of Trinidad State Park, south of Trinidad 38 Comment
  UC1198953  Geranium core-core J. P. Tracy 1911-6-11 3239 Humboldt Trinidad 91 Comment
  UC165808  Geranium core-core Joseph P. Tracy 1909-6-13 2990 Humboldt Blue Lake Northern Coast Ranges 30 Comment
  UC1586897  Geranium dissectum Juha Pykala and D. H. Norris 1987-5-20 751 Humboldt about 7.5 rd mi s Ferndale (along Wildcat Road, near Green Pond Ranch) 450 Comment
  HSC44760  Geranium oreganum Maralyn O'Meara 1972-6-8 80 Humboldt Along Bald Hills Rd, 16.4 mi. E of junction with Hwy. 101 Comment
  SEINET3356154 Image available Gilia capitata H. E. Parks, J. P. Tracy 1930-5-25 0793 Humboldt Near Bridgeville Comment
  UC1197929  Gilia capitata subsp. capitata Joseph P. Tracy 1908-6 2751 Humboldt nw slope of Buck Mountain , nw slope Buck Mountain (Northern Coast Ranges) 457 Comment
  BLMAR638  Gilia capitata subsp. pacifica Jennifer Wheeler 2011-6-21 638 Humboldt Lacks Creek, Pine Ridge Road Comment
  CAS-BOT-BC226144  Gilia capitata subsp. pacifica Mrs. G. Earle Kelly 1924-6-1 s.n. Humboldt Castle Island near Crescent City Comment
  UC1197928  Gilia capitata subsp. pacifica Joseph P. Tracy 1937-5-30 15310 Humboldt near Bosworth's (Larrabee Creek); Northern Coast Ranges, Larrabee Creek 457 Comment
  BLMAR597  Gilia millefoliata Jennifer Wheeler 2010-5-11 597 Humboldt Samoa Peninsula, Samoa Dunes Engangered Plant Protection Area 3 Comment
  HSC89597  Gilia tricolor subsp. tricolor M. Roantree 1985-5-24 59 Humboldt S of Trinidad Head summit near cross Comment
  HSC17915  Glaux maritima Norman H. Moe 1962-5-17 Humboldt Lanphere's Place Comment
  UC1199277  Glebionis segetum Joseph P. Tracy 1933-8-22 12977 Humboldt at Eureka 6 Comment
  CAS-BOT-BC218429  Glehnia littoralis subsp. leiocarpa A. A. Heller 1924-7-24 13882 Humboldt Dunes at Humboldt County camp 7 miles south of Trinidad Comment
  HSC21497  Glehnia littoralis subsp. leiocarpa S. J. Hawks 1965-5-14 62 Humboldt Clam Beach Comment
  RSA550895  Glyceria declinata R. F. Thorne, P. Everett 1965-8-9 35346 Humboldt Along Highway 101 about 3 miles north of Eureka. 2 Comment
  BLMAR561  Glyceria elata Clara Sander 2009-8-21 561 Humboldt Lacks Creek, in a ditch near where main lacks Creek parking lot is to be 975 Comment
  SEINET200364 Image available Glyceria elata J. P. Tracy 2770 Humboldt Valley of Van Duzen River; opposite Buck Mtn 780 Comment
  UC1541565  Glyceria elata Harold E. Parks Sep 1928 175 Humboldt Big Lagoon Comment
  UC212892  Glyceria elata Joseph P. Tracy 1919-9-25 5297 Humboldt Trinity Summit; Northern Coast Ranges 1889 Comment
  UC526902  Glyceria striata Joseph P. Tracy Jul 16 1930-Jul 19 1930 8932 Humboldt McKay Camp Northern Coast Ranges, South Fork Mountain (South Fork Mountain) 152 Comment
  UC630460  Gnaphalium palustre H. E. and S. T. Parks 1937-8-1 24080 Humboldt Spruce Cove Northwestern California, Trinidad, Spruce Cove Comment
  HSC55216  Goodyera oblongifolia Walter Overton 1979-8-1 12373 Humboldt Near Mill Creek, Middle Fork, close to the town of Hoopa. 1341 Comment
  UC582588  Gratiola ebracteata Joseph P. Tracy 1930-5-18 8697 Humboldt Rohnerville 152 Comment
  CAS-BOT-BC304746  Grindelia hirsutula John Thomas Howell 1937-7-31 13720 Humboldt Salt marsh bordering Humboldt Bay at Arcata Comment
  UC774625  Grindelia hirsutula Carl B. Wolf 1937-9-9 9305 Humboldt coast 2 mi s of Cape Mendocino 6 Comment
  RSA638980  Grindelia stricta var. stricta R. F. Thorne, Percy C. Everett 1965-8-7 35204 Humboldt Samoa Peninsula. 0 Comment
  HSC56345  Hackelia bella Griswold, Butler 1979-7-10 6282 Humboldt Near Board Camp Mtn., close to the town of Willow Creek 1372 Comment
  HSC99536  Hackelia californica K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-28 201 Humboldt Near North Trinity Mtn, along trail to Water Dog Lakes, Six Rivers National Forest. 1738 Comment
  UC1222252  Hackelia californica Joseph P. Tracy 1948-8-15 18154 Humboldt on Ridge 2 mi e Grove's Prairie; Trinity nSummit 1524 Comment
  HSC102116  Hastingsia alba M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 1020 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  UC630634  Hedera helix Joseph P. Tracy 1939-1-22 16185 Humboldt on Van Duzen R. Blue Slide 91 Comment
  HSC73632  Helenium bigelovii M. A. Baker 1980-7-22 3100 Humboldt Near Grogan Hole 152 Comment
  CAS-BOT-BC306864  Helenium bolanderi Doris K. Kildale 1926-7-16 2384 Humboldt Big Lagoon Comment
  UC175963  Helenium bolanderi Joseph P. Tracy 1912-7-24 3808 Humboldt Eureka Northern Coast Region, Eureka 0 Comment
  UC198637  Hemitomes congestum Joseph P. Tracy 1916-6-25 4740 Humboldt between Little River and Redwood CreekNorthern Coast Ranges Redwood Creek (Northern Coast Ranges); Northern Coast Ranges 304 Comment
  RSA47162  Hemizonia congesta Doris K. Kildale 1927-8-29 3243 Humboldt Cape Mendocino. Comment
  JEPS12643  Hemizonia congesta subsp. clevelandii Joseph P. Tracy 1928-9-2 8494 Humboldt Dobbyn Creek Northern Coast Ranges 152 Comment
  CAS-BOT-BC309991  Hemizonia congesta subsp. tracyi Joseph P. Tracy 1937-7-19 15456 Humboldt Buck Mountain, lower foothills of its northwest slope 914 Comment
  UC205206  Hemizonia congesta subsp. tracyi Joseph P. Tracy 1919-7-20 5183 Humboldt w side near top Mount Pierce; Northern Coast Ranges, Mount Pierce 914 Comment
  UC495619  Hemizonia congesta subsp. tracyi Joseph P. Tracy 1931-6-28 9598 Humboldt lower foothills of its nw slope Buck Mountain; Northern Coast Ranges, Buck Mountain 762 Comment
  UC495620  Hemizonia congesta subsp. tracyi Joseph P. Tracy 1927-5-8 7983 Humboldt vicinity of Garberville 121 Comment
  UC1223121  Hesperevax acaulis var. robustior Joseph P. Tracy 1949-6-12 18312 Humboldt Trinity River Valley at Willow Creek; Trinity River Valley 152 Comment
  HSC13055  Hesperocyparis macrocarpa C. E. Fellows 1970-12-7 368 Humboldt HSC Campus, Arcata Comment
  UC146127  Hesperolinon micranthum Joseph P. Tracy 1908-6 2820 Humboldt nw slope Buck Mountain; Northern Coast Ranges 914 Comment
  UC1222144  Hesperolinon micranthum Joseph P. Tracy 1950-7-6 18994 Humboldt 3 mi s Burr Valley (on the Albee Road); Buck Mountain 1158 Comment
  UC203568  Heterocodon rariflorum Joseph P. Tracy 1918-7-5 5009 Humboldt White Thorn Valley; Northern Coast Ranges 304 Comment
  SEINET10840490  Heterocodon rariflorum Anderson 1974-6-17 Anderson 5709 Humboldt MCKEOWN RANCH N OF DINSMORE OAK, DOUG FIR WOODLAND. T2N R5E SECS 283334 Comment
  JEPS26204  Heuchera micrantha var. macropetala Joseph P. Tracy 1948-8-15 18139 Humboldt on ridge 2 mi e Grove's Prairie; Trinity Summit 1524 Comment
  HSC98607  Heuchera micrantha var. micrantha Cara Witte 2008-7-14 890 Humboldt Horse Mountain Botanical Area. Forest Service Road 6N18. At end of the road. 1407 Comment
  HSC55746  Heuchera rubescens G. L. Clifton, Griswold 1979-7-26 10269 Humboldt Near Salmon Mtn., close to the town of Forks of Salmon 1935 Comment
  HSC56042  Heuchera rubescens G. L. Clifton, Griswold 1979-7-31 11617 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1719 Comment
  HSC56114  Heuchera rubescens Gilbert Muth 1979-8-1 11884 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1877 Comment
  HSC56213  Heuchera rubescens G. L. Clifton, Griswold 1979-8-2 12222 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  CAS-BOT-BC312387  Hieracium albiflorum Ira L. Wiggins 1930-7-22 4691 Humboldt Along bank of Redwood Creek between Blue Lake and Willow Creek Comment
  CAS-BOT-BC312390  Hieracium albiflorum Doris K. Kildale 1926-6-6 2118 Humboldt Gold Bluffs Comment
  HSC57870  Hieracium albiflorum G. L. Clifton 1979-7-31 11399 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  HSC79502  Hieracium albiflorum Kenneth Clark 1980-6-14 687 Humboldt N Fork of Deadman's Gulch 107 Comment
  HSC98820  Hieracium albiflorum Cara Witte 2008-7-30 963 Humboldt Spike Buck Mountain. Forest Service Road 5N18. 1/2 mile from intersection with National Forest 1. 1589 Comment
  CAS-BOT-BC312389  Hieracium albiflorum Doris K. Kildale 1925-7-5 1022 Humboldt Willow Creek Flat, Trinity River Valley 152 Comment
  HSC95113  Hieracium albiflorum Andrea Pickart 2002-6-30 130 Humboldt Lamphere Dunes Unit, Humboldt Bay National Wildlife Refuge 24 Comment
  UC419046  Hieracium albiflorum H. E. Parks, J. P. Tracy 1930-9-15 768 Humboldt near Kneeland; Bald Hills Comment
  POM160893  Hierochloe occidentalis Joseph P. Tracy 1918-4-21 4882 Humboldt Around Humboldt Bay, old Kneeland Road 305 Comment
  UC1103736  Hierochloe occidentalis Joseph P. Tracy 1921-3-20 5423 Humboldt Blue Slide Northern Coast Ranges, Van Duzen River 91 Comment
  UC205670  Hierochloe occidentalis Joseph P. Tracy 1918-4-21 4882 Humboldt around Humboldt Bay (old Kneeland Road); Northern Coast Ranges 304 Comment
  UC1191968  Hippuris vulgaris Malcolm A. Nobs and S. Galen Smith 1949-8-3 1191 Humboldt marsh & bog land at southern outskirts Eureka Comment
  HSC10122  Holcus lanatus J. W. Johnson 1961-8-17 1035 Humboldt Arcata, W.M. Lanphere Farm, Samoa Peninsula. Comment
  HSC10140  Holcus lanatus N. R. Waite 1965-5-21 54 Humboldt W edge of Humboldt State College Campus. Comment
  HSC74670  Holcus lanatus Gail Newton 1981-8-5 2355 Humboldt Near Bug Creek, E Fork. 820 Comment
  JEPS72924  Holcus lanatus Lincoln Constance 1934-6-11 849 Humboldt Bull Creek Region N. Dyerville Flat (trail along e bank of South Fork Eel River); e bank of South Fork Eel River, Bull Creek Region Comment
  SEINET4585084  Holcus lanatus H. Parks, S. Parks 1943-1 24260 Humboldt North Coast Ranges, Spruce Cove, Trinidad. 61 Comment
  RSA603763  Holcus lanatus Joseph A. Ewan 1937-7-2 10454 Humboldt Bull Creek State Park, 2 miles from Dryerville. Comment
  HSC57434  Holodiscus discolor G. L. Clifton, Griswold 1979-7-26 10223 Humboldt Near Salmon Mtn., close to the town of Forks of Salmon 1981 Comment
  HSC58138  Holodiscus discolor Gilbert Muth 1979-8-1 12156 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1677 Comment
  HSC71582  Holodiscus discolor Gail Newton 1980-6-16 189 Humboldt Near Onion Mtn. 1280 Comment
  HSC73250  Holodiscus discolor M. A. Baker 1980-5-18 1317 Humboldt Near Black Mtn. 1006 Comment
  HSC73688  Holodiscus discolor M. A. Baker 1980-7-23 3172 Humboldt Near Orleans Mtn. 1859 Comment
  OBI10161  Holodiscus discolor Carl B. Wolf 1937-9-9 9310 Humboldt North Coast Range, Wildcat Ridge, 6 3/10 mi S of Ferndale 305 Comment
  RSA183531  Holodiscus discolor D. E. Anderson 1963-9-1 2806 Humboldt Near Kneeland. 732 Comment
  UC154211  Holodiscus discolor Joseph P. Tracy 1901-7-31 1231 Humboldt near Hydesville (Northern Coast Region); Northern Coast Region 60 Comment
  CAS-BOT-BC149904  Holodiscus discolor J. H. Thomas 1949-6-14 925 Humboldt Klamath River Valley between Weitchpec and Hoopa Comment
  RSA87062  Hordeum brachyantherum Joseph P. Tracy 1933-6-6 12508 Humboldt Trinidad 9 Comment
  UC552784  Hordeum brachyantherum subsp. californicum Joseph P. Tracy 1935-5-25 13864 Humboldt Fort Seward 106 Comment
  UC38634  Hordeum marinum subsp. gussoneanum Harley P. Chandler 1901-6-1 1431 B Humboldt Klamath River North Coast Ranges, Klamath River 335 Comment
  HSC10224  Hordeum murinum subsp. glaucum R. T. Forester 1963-3-31 38 Humboldt 0.25 mi. N of Fairhaven on Samoa Rd. Comment
  UC1198713  Horkelia californica Joseph P. Tracy 1910-7-24 3159 Humboldt s side Humboldt Hill; Humboldt Bay 152 Comment
  UC585617  Horkelia californica Joseph P. Tracy 1937-8-22 15672 Humboldt s Field's Landing (Foot of low hills) 6 Comment
  CAS-BOT-BC537897  Horkelia tridentata var. flavescens Rattan 1878-1-1 s.n. Humboldt Unspecified Comment
  HSC100517  Hosackia purshiana Carl C. Marshall Jun 1885 83 Humboldt Near Bug Creek. Comment
  HSC39777  Hydrocotyle ranunculoides Peter Sorensen 1976-7-14 Humboldt Woodley Island Comment
  HSC97436  Hydrocotyle ranunculoides Ivy Watson 2008-9-28 33 Humboldt Beach N of river mouth, along small tributary E of sand dunes 4 Comment
  HSC21513  Hydrocotyle ranunculoides R. L. Jarvis 1962-4-29 34 Humboldt Clam Beach Lagoons, 0.5 mi S of Little River on Hwy 101 0 Comment
  UC1239762  Hydrophyllum occidentale Joseph P. Tracy 1908-6 2633 Humboldt Kneeland Prairie; Northern Coast Ranges 762 Comment
  UC1198410  Hypericum anagalloides Joseph P. Tracy 1913-6-1 4076 Humboldt at Eureka Northern Coast Region, Eureka 0 Comment
  UC183761  Hypericum anagalloides Joseph P. Tracy 1913-6-22 4272 Humboldt opposite Buck Mt. (Dinsmore's Ranch); Northern Coast Ranges, Valley of Van Duzen R., Dinsmore's Ra 762 Comment
  UC502949  Hypericum anagalloides Joseph P. Tracy Jul 16 1930-Jul 19 1930 8978 Humboldt S. Fork Mt., McKay Camp Northern Coast Ranges, S. Fork Mt., McKay Camp 1676 Comment
  UC1714398  Hypericum formosum var. scouleri Joseph P. Tracy 1913-7 4393 Humboldt Patrick's Point Northern Coast Ranges, Patrick's Point 30 Comment
  CDA30714  Hypericum perforatum M. K. Beyers, I. Shepardson 2009-9-13 250 Humboldt Off the eastern side of State Route 254 (Avenue of the Giants), along the Eel river, on and along a steep-cut bank that has been cemented over here, probably to prevent erosion. 0 Comment
  SD93061  Hypericum perforatum W. Bertsch 1953-7-30 225 Humboldt Highway 101 at Dyerville. 60 Comment
  SEINET6178743  Hypericum perforatum James P. Smith 1973-5-26 6830 Humboldt Scotia Bluffs along the Eel River near Rio Dell.; 0 Comment
  UC1122120  Hypericum perforatum H. L. Person 1932-7-16 Humboldt Korbel Eureka Quad., Korbel Comment
  UCR32144  Hypericum perforatum David J. Keil 1983-7-1 17279 Humboldt North Coast Range, Bull Creek Flats Road, 2.5 mi. NE of Honeydew Comment
  HSC39569  Hypochaeris glabra D. E. Anderson, J. P. Smith 1971-6-18 1074 Humboldt Chezem Rd., about 3 mi. E of bridge over Redwood Creek Comment
  UC1069673  Hypochaeris radicata H. L. Person 1932-7-16 L.H. 25 Humboldt Highway n Trinidad; Rock Point Quad. Comment
  CAS-BOT-BC311433  Hypochaeris radicata Frank W. Peirson 1923-7-9 3934 Humboldt Auto camp on Eel River, Humboldt County State Park Comment
  HSC100106  Hypochaeris radicata A. Montalvo 1975-5-24 271 Humboldt Samoa Dunes off Samoa Blvd., across from the boat landing Comment
  HSC67871  Hypochaeris radicata J. P. Smith 1973-5-26 6879 Humboldt Scotia Bluffs along the Eel River near Rio Dell Comment
  RSA2927  Iliamna latibracteata Carl B. Wolf 1931-8-28 2367 Humboldt Redwood Hwy 3 miles north of Orick (Davison s Ranch on Prairie Creek) 61 Comment
  HSC56329  Ipomopsis aggregata Overton, Butler 1979-8-2 12684 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  UC1103022  Iris douglasiana J. P. Tracy 1901-5-12 1079 Humboldt vicinity Eureka 0 Comment
  UC667112  Iris douglasiana Joseph P. Tracy 1935-6-23 14001 Humboldt e of Orick (Bald Hills Road) 609 Comment
  UC667113  Iris douglasiana Joseph P. Tracy 1933-5-20 12257 Humboldt Mattole Valley; Northern Coast Ranges 30 Comment
  HSC100501  Iris longipetala Carl C. Marshall May 1886 157 Humboldt Everywhere. Comment
  CAS-BOT-BC123369  Iris tenax subsp. klamathensis Lee W. Lenz 1953-5-13 18296 Humboldt along Klamath River, Orleans 121 Comment
  CHSC32902  Iris tenax subsp. klamathensis T. Jimerson; J. Pageau 1979-5-9 450 A Humboldt In old clear cut on Forest Road 12N20, 1.5 mi. west of its junction with F. R. 15N01 ( G. O. Road). Orleans. Just west of serpentine balds. 792 Comment
  HSC66483  Iris tenax subsp. klamathensis T. Jimerson, J. Pageau 1979-4-27 436 Humboldt FS Rd. 12N20, 0.2 mi. N of FS Rd. 15N01 (G.O. Rd.), Orleans 710 Comment
  RSA298350  Iris tenax subsp. klamathensis T. Jimerson, J. Pageau 1979-5-1 440 Humboldt 1.3 miles south of Hwy 96 on Ishi Pishi Road, west side of road, Orleans; aspect 52E 232 Comment
  CDA39594  Iris tenuissima Rex E. Marsh 1961-4-1 s.n. Humboldt 2 miles south of Garberville. 0 Comment
  HSC49284  Iris tenuissima J. O. Sawyer 1977-4-23 2839 Humboldt On road to Fish Lake Comment
  RSA120727  Isatis tinctoria S. S. Tillett 1956-7-6 606 Humboldt Above Klamath River, along Ishi Rish Road, 1 mi N of Orleans. 168 Comment
  HSC7450  Isolepis cernua J. P. Tracy 1938-6-16 15942 Humboldt Trinidad 3 Comment
  HSC7448  Isolepis cernua D. E. Anderson 1961-9-3 1780 Humboldt Along Hwy. 101 Comment
  JEPS11945  Isolepis cernua Rimo Bacigalupi with C. L. Custer and G. T. Robbins 1954-8-10 4759 B Humboldt along U.S. Highway 101 0.4 mi s of the southern boundary marker Dry Lagoon Beach State Park; s of Dry Lagoon Beach State Park Comment
  HSC89905  Jaumea carnosa Leonel Arguello 1989-7-22 Humboldt Lanphere-Christensen Dunes Preserve, 3 mi. W of Arcata Comment
  CHSC105448  Juncus balticus subsp. ater Peter F. Zika 2008-11-3 24274 Humboldt North Coast. Mouth of Elk River NE of Route 101 bridge, 2 air km S of Eureka. 2 Comment
  HSC57117  Juncus balticus subsp. ater Walter Overton, Marvin Butler 1979-7-25 9862 Humboldt Near Ammon Creek, close to the town of Willow Creek 671 Comment
  CHSC105149  Juncus bolanderi Peter F. Zika 2008-10-19 24230 Humboldt E side of Route 101, near Exit 728 for Trinidad Beach (North Coast NCo) 110 Comment
  JEPS5820  Juncus bolanderi W. L. Jepson 1932-7-24 16393 Humboldt Tooey Ranch Garberville Comment
  UC1152112  Juncus bufonius Joseph P. Tracy 1927-6-19 8197 Humboldt Big Lagoon Comment
  HSC74417  Juncus covillei Gail Newton 1980-8-10 2039 Humboldt Near Blake Mtn. 1707 Comment
  UC1152092  Juncus ensifolius Joseph P. Tracy 1937-8-12 15643 Humboldt Snow Camp Comment
  UC183677  Juncus ensifolius Joseph P. Tracy 1912-7-24 3809 Humboldt Eureka Northern Coast Region 0 Comment
  RSA53821  Juncus ensifolius Henry M. Pollard 1945-8-26 s.n. Humboldt Between Orleans and Camp Creek. Klamath River Canyon. Comment
  HSC99545  Juncus exiguus K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-8-10 210 Humboldt Near North Trinity Mtn, 11. 5 mi E of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  UC1103045  Juncus falcatus subsp. falcatus Joseph P. Tracy with H. E. Parks 1924-8-3 6746 Humboldt Stone Lagoon Northern Coast Region 6 Comment
  RSA246773  Juncus falcatus subsp. sitchensis Robert F. Thorne, Percy C. Everett 1965-8-7 35223 Humboldt Samoa Peninsula. 3 Comment
  UC167841  Juncus falcatus subsp. sitchensis Schmidt Humboldt Humboldt Bay Comment
  HSC82399  Juncus howellii Thomas W. Nelson 1979-7-11 5015 Humboldt N Trinity Mtn. and ridge to E 1829 Comment
  HSC36888  Juncus laccatus Thomas W. Nelson, Jane P. Nelson, James Nelson 1975-7-20 2057 Humboldt Beside Rd. 2S08 to Pine Mtn. Comment
  HSC90770  Juncus lescurii Gail Newton 1982-6-10 3608 Humboldt Elk River Wildlife Area, Eureka Comment
  RSA12427  Juncus saximontanus Carl B. Wolf 1934-7-2 5867 Humboldt Small lake at Snow Camp (Mountains east of Korbel). 1372 Comment
  HSC98517  Juncus tenuis Cara Witte 2007-6-28 382 Humboldt FS Road 5N10. Approximately 0.5 mi E of intersection with National Forest 1. 1426 Comment
  HSC73067  Juniperus communis var. saxatilis M. A. Baker 1980-6-16 1954 Humboldt Near Onion Mtn. 1280 Comment
  HSC32539  Keckiella corymbosa Thomas W. Nelson 1973-8-19 1116 Humboldt McKeown Ranch N of Dinsmore Comment
  POM160888  Keckiella corymbosa Joseph P. Tracy 1920-8-15 5360 Humboldt Klamath River at Bluff Creek. 152 Comment
  POM225119  Keckiella corymbosa Philip A. Munz 1936-8-9 14328 Humboldt South fork of Eel River, 5 miles north of Humboldt-Mendocino county line. Comment
  SD87718  Keckiella corymbosa Frank W. Peirson 1926-7-12 7025 Humboldt Klamath River near Weitchpec Comment
  UC1193337  Keckiella corymbosa P. Zinke 184 Humboldt 300 yds nw of summit King Peak 1249 Comment
  UC1222464  Keckiella corymbosa Joseph P. Tracy 1934-8-26 13602 Humboldt Blue Slide Northern Coast Ranges (on Van Duzen River) 91 Comment
  UC213144  Keckiella corymbosa Joseph P. Tracy 1920-8-15 5360 Humboldt Bluff Creek; Northern Coast Ranges, Klamath River 152 Comment
  UC1222465  Keckiella lemmonii Joseph P. Tracy 1939-8-16 16425 Humboldt near Grouse Mountain; Friday Ridge 1219 Comment
  UC213502  Keckiella lemmonii Joseph P. Tracy 1920-8-15 5352 Humboldt mouth of Slate Creek; Northern Coast Ranges, Klamath River 152 Comment
  UC1409055  Kickxia elatine Robert F. Thorne and P. Everett 1965-8-8 35262 Humboldt n edge Eureka (e of Hwy 101) 4 Comment
  UC902208  Kickxia elatine Joseph P. Tracy 1946-8-25 17648 Humboldt near mouth of Van Duzen River; Eel River 15 Comment
  UC1132151  Koeleria macrantha H. S. Yates 1936-6-11 5711 Humboldt lower sw slope Buck Mountain; South Fork Peak Quad., lower sw slope Buck Mountain Comment
  UC187287  Koeleria macrantha Joseph P. Tracy 1908-6 2778 Humboldt nw slope Buck Mountain; Northern Coast Ranges, nw slope of Buck Mountain 914 Comment
  UC403006  Kopsiopsis strobilacea unknown 1901-1 Humboldt Comment
  SEINET202279 Image available Lactuca ludoviciana Joseph P. Tracy 1950-9-22 19368 Humboldt Klamath River near Slate Creek. Below Orleans 8 miles 122 Comment
  UCD133531  Lactuca saligna Joseph P. Tracy 1946-8-25 17650 Humboldt Eel River, Alton to Fortuna. 15 Comment
  UC1199153  Lagophylla ramosissima Joseph P. Tracy 1930-10-12 9217 Humboldt Alton to Fortuna; Eel River 15 Comment
  HSC77915  Landoltia punctata Daniel V. Richards 1981-8-25 102 Humboldt 11 km E of Arcata, W End Rd. Comment
  CAS-BOT-BC324411  Lasthenia californica subsp. macrantha M. Louise Hutchinson 1913-5-1 s.n. Humboldt Eureka Comment
  POM161459  Lasthenia glaberrima Joseph P. Tracy 1916-6-19 4720 Humboldt Dobbyn Creek Comment
  UC582759  Lasthenia glaberrima Joseph P. Tracy 1930-6-15 8748 Humboldt near Bosworth's; Northern Coast Ranges, Larrabee Creek 457 Comment
  CAS-BOT-BC94770  Lathyrus angulatus R. C. Wenk; P. Hopkinson; M. Hammond; S. Spiegal 2008-6-6 829 Humboldt Humboldt Redwoods State Park. Look Prairie, 0.5 air miles N of Mattole Road, about 3 air miles W of Highway 101 243 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
  HSC87151  Lathyrus biflorus Thomas W. Nelson, James Nelson 1980-6-10 5432 Humboldt NE slope of Red Mtn. 1372 Comment
  HSC100518  Lathyrus californicus Carl C. Marshall Jul 1887 460 Humboldt Harris. Comment
  UC1222396  Lathyrus glandulosus Joseph P. Tracy 1950-6-29 18934 Humboldt 3 mi e Kneeland (on Butter Valley Road) Comment
  HSC14739  Lathyrus littoralis H. E. Parks 1930-5-24 798 Humboldt Little River Lagoon 0 Comment
  UCSB15805  Lathyrus littoralis Breedlove, Dennis 1962-6-7 Humboldt 1.5 miles south of Samoa on peninsula on western side of Humboldt Bay Comment
  UC162839  Lathyrus littoralis Joseph P. Tracy 1906-5-13 2451 Humboldt Ocean Beach Northern Coast Region, Humboldt Bay Comment
  HSC33416  Lathyrus nevadensis var. nevadensis Thomas W. Nelson 1974-5-30 1346 Humboldt Along Hoopa-Redwood Valley Rd. Comment
  HSC14750  Lathyrus nevadensis var. nevadensis D. E. Anderson 1965-5-1 3574 Humboldt Along Bluff Creek Rd., about 2.5 mi. from its junction with Hwy. 96. Comment
  HSC24404  Lathyrus nevadensis var. nevadensis J. O. Sawyer 1970-6-24 2283 Humboldt Salmon Mt., W of Mill Creek Lake 1677 Comment
  UC1191473  Lathyrus palustris Malcolm A. Nobs and S. Galen Smith 1949-8-3 1187 Humboldt s outskirts Eureka Comment
  UCD106338  Lathyrus palustris Malcolm A. Nobs; S. Galen Smith 1949-8-3 1187 Humboldt Southern outskirts of Eureka. Comment
  UC1222409  Lathyrus polyphyllus Joseph P. Tracy 1948-8-15 18118 Humboldt 1 1/2 miles north of Forest Service Public Camp on Trinity Summit Road. Happy Camp Mountain (In Trinity Summit Range, 6 miles northeast of Hawkins Bar.) Comment
  UC1222408  Lathyrus polyphyllus Joseph P. Tracy 1949-8-11 18474 Humboldt 2-6 mi s Grouse Mt. (ridge e of headwaters of Redwood Creek, where power line crosses); Kinsey Ridge 1280 Comment
  UCD106339  Lathyrus polyphyllus K. Esau 1934-5-8 s.n. Humboldt Above Fort Seward. 457 Comment
  HSC75555  Lathyrus torreyi J. O. Sawyer, J. Cole 1977-7-3 3004 Humboldt Environs of Mud Spring, Big Hill Rd. (FS Rd. 8N01) 1524 Comment
  SEINET956250  Lathyrus torreyi Joseph P. Tracy 1921-1 5478 Humboldt South fork of Esl River, near Myers, in open places in wood. 61 Comment
  UCD106660  Lathyrus torreyi C. L. Hitchcock 1949-6-7 19084 Humboldt 15 miles E of Blue Lake, along Highway 299. Comment
  UC1199071  Lathyrus vestitus Joseph P. Tracy 1901-6-2 1120 Humboldt immediate vicinity Eureka 0 Comment
  UC162589  Lathyrus vestitus Joseph Burtt Davy and Walter C. Blasdale 1899-6-8 5358 Humboldt Bell Springs to Harris; North Coast Ranges Comment
  SEINET12158645  Lathyrus vestitus subsp. bolanderi J. P. Tracy 1949-1 18327 Humboldt on the Butter Valley Rd, 2miE of Kneeland 610 Comment
  HSC100701  Layia carnosa Carl C. Marshall May 1885 39 Humboldt Peninsula. Comment
  UC1101254  Lemna minuscula Malcolm A. Nobs, S. Galen Smith 1949-8-9 1237 Humboldt on s side of town of Blue Lake Blue Lake Comment
  RSA94973  Leontodon nudicaulis F. W. Peirson 1926-7-13 7056 Humboldt Near Blue Lake, Mad River. Comment
  HSC59676  Leontodon saxatilis subsp. saxatilis George Kirn 1977-10-30 Humboldt 1/2 mi. from mouth of Elk River 8 Comment
  HSC91909  Leontodon saxatilis subsp. saxatilis E. Mackey 1986-10-7 Humboldt Patrick's Point State Park; near Penn Creek Campground Comment
  OBI40320  Leontodon saxatilis subsp. saxatilis Ralph N. Philbrick 1974-8-28 s.n. Humboldt Behind sandy beach and road fill, Hwy 101, S of Orick Comment
  HSC64787  Lepidium densiflorum J. P. Smith, Steve Selva 1970-6-14 3843 Humboldt Along Hwy. 96 at Whitmore Creek 152 Comment
  UCD115360  Lepidium didymum James P. Smith 1973-5-26 6876 Humboldt Scotia Bluffs along the Eel River near Rio Dell. Comment
  UC1225755  Lepidium nitidum Joseph P. Tracy 1948-5-31 18012 Humboldt Alder Point 304 Comment
  HSC17077  Leptosiphon androsaceus J. P. Tracy, H. E. Parks 1930-5-25 794 Humboldt Near Bridgeville 457 Comment
  HSC17097  Leptosiphon androsaceus William J. Ferlatte, B. D. Rogers 1966-6-15 2104 Humboldt Larabee Valley 762 Comment
  HSC71061  Leptosiphon bicolor Thomas W. Nelson, Jane P. Nelson 1980-5-30 3395 Humboldt McKeown Ranch along rd. to Anderson's Ford 854 Comment
  CAS-BOT-BC334615  Leucanthemum vulgare L. R. Abrams 1916-7-18 6076 Humboldt Between Arcata and Trinidad Comment
  HSC91923  Leucanthemum vulgare E. Mackey 1986-7-21 Humboldt Patrick's Point State Park near Ceremonial Rock. Comment
  JEPS37563  Leucanthemum vulgare Lincoln Constance 1934-6-6 827 Humboldt Fire trail Dyerville tottorse Prairie; Bull Creek Region Comment
  SEINET3071950  Lewisia cotyledon var. howellii Lincoln Constance, Reed C. Rollins 1942-1 2885 Humboldt Mouth of Bluff Creek, 6 miles northeast of Weitchpec. 150 Comment
  HSC102511  Lewisia nevadensis M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-28 1496 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1106 Comment
  BLMAR412  Leymus X vancouverensis Jennifer Wheeler 2007-8-22 412 Humboldt South Spit, East side, eastern edge of north end Comment
  CAS-BOT-BC283514  Leymus X vancouverensis Malcom A. Nobs; S. Galen Smith 1949-8-3 1204 Humboldt Salt marshes bordering Humboldt Bay, ca 2 miles N of Eureka Comment
  UCD149816  Leymus X vancouverensis William Anderson 1965-6-26 s.n. Humboldt Arcata Bottoms. Comment
  POM160887  Leymus triticoides Joseph P. Tracy 1918-7-6 5063 Humboldt South Fork of Eel River near the Humboldt-Mendocino County Line 152 Comment
  UC1103208  Leymus triticoides Joseph P. Tracy 1929-7-21 8645 Humboldt Willow Creek Northern Coast Ranges, Trinity River Valley 152 Comment
  CAS-BOT-BC436492  Ligusticum apiifolium Ira L. Wiggins 1930-7-22 4692 Humboldt Along Redwood Creek between Blue Lake and Wilow Creek Comment
  HSC21521  Lilaeopsis occidentalis J. W. Johnson 1962-6-5 Humboldt Lanphere Farm, Samoa Peninsula, Hollow 10 Comment
  HSC76438  Lilium bolanderi Teresa Prendusi 1981-7-9 202 Humboldt Near Cedar Camp 1268 Comment
  HSC35939  Lilium columbianum Thomas W. Nelson, Jane P. Nelson, James Nelson 1975-7-15 2032 Humboldt Just E of Redwood National Park along Bald Hills Rd. Comment
  HSC100557  Lilium columbianum Carl C. Marshall Jun 1885 131 Humboldt Near Jarningan's. Comment
  HSC15575  Lilium kelloggii D. E. Anderson 1962-7-14 2250 Humboldt 2 mi. W of Kneeland Post Office Comment
  CAS-BOT-BC130684  Lilium occidentale M. Louise Hutchinson 1913-6-1 s.n. Humboldt Eureka Comment
  UC1198243  Lilium occidentale Joseph P. Tracy 1924-9-21 6886 Humboldt Eureka; Northern Coast Ranges 0 Comment
  CAS-BOT-BC130732  Lilium pardalinum Doris K. Kildale 1928-7-25 5693 Humboldt Chalk Mountain 914 Comment
  CAS-BOT-BC132965  Lilium rubescens Volney Rattan 1867-6-1 s.n. Humboldt Coast Range Comment
  CDA35335  Limnanthes douglasii B. F. Kemp 1958-5-5 395 -58 Humboldt Loleta. 0 Comment
  JEPS19587  Limnanthes douglasii Joseph P. Tracy 1921-4-24 5476 Humboldt Philipsville Northern Coast Ranges (facing South Fork of Eel River) 121 Comment
  UC673262 Image available Limnanthes douglasii Lincoln Constance and Reed C. Rollins 1942-5-21 3000 Humboldt two mi n Harris; Klamath-Siskiyou Region; Siskiyou Region, Humboldt Co. 762 Comment
  CHSC89511  Limnobium laevigatum Gordon Leppig; T. LaBanca 2003-3-13 1823 Humboldt Arcata, Alder Grove Pond. On south shore of wetland. UTM Zone 10, 428185 N, 410100 E. 9 Comment
  HSC95099  Limonium californicum Andrea Pickart 2002-6-27 121 Humboldt Mad River Slough and Dunes, N of parking area at N end of access road. 0 Comment
  UC52735  Linanthus androsaceus Chesnut and Drew 1888-7-10 Humboldt Jarnigan's Comment
  UC52737  Linanthus androsaceus W. C. Blasdale 1896-6-6 Humboldt Graham's Comment
  UC169339  Linnaea borealis var. longiflora Joseph P. Tracy 1911-7-12 3521 Humboldt mountain slopes along road between Three Creeks and mouth of Willow Creek (at Three Creeks); Northern Coast Ranges, bwt Three Creeks and Willow Creek mou 914 Comment
  HSC15799  Linum bienne John A. Dubois 1962-5-12 13 Humboldt 20 mi. E of Arcata Comment
  POM270414  Lithocarpus densiflorus var. densiflorus Lyman Benson 1927-7-12 224 Humboldt Weott Ranger Station; Mt. Range: Seaward N Coast; River: South Fork Eel. 61 Comment
  UC11920  Lithophragma glabrum J. Burtt Davy 1899-6-23 5795 Humboldt Trinity Summit; North Coast Ranges, Trinity Summit 2133 Comment
  HSC32143  Lithophragma heterophyllum D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5607 Humboldt Mt. Lassic and two smaller peaks to immediate E 1768 Comment
  CAS-BOT-BC342348  Logfia gallica Henry M. Pollard 1945-8-26 s.n. Humboldt Between Orleans and Camp Creek, Klamath River Canyon Comment
  CAS-BOT-BC283407  Lolium multiflorum H. M. Hall 1924-8-9 s.n. Humboldt Van Duzen River Valley, near Carlotta Comment
  UC50505  Lolium multiflorum Joseph Burtt Davy and Walter C. Blasdale 1899-7-30 6212 Humboldt Russ Ranch; North-Western California Comment
  RSA728076  Lolium perenne Gary D. Wallace 1979-6-24 1860 Humboldt Near Brush Mountain Lookout, SW of the town of Willow Creek. 1216 Comment
  UC50698  Lolium temulentum Joseph Burtt Davy 1899-6-20 5690 Humboldt Hupa Valley Comment
  UC1197161  Lomatium dissectum var. dissectum Joseph P. Tracy 1926-5-15 7480 1/2 Humboldt Kneeland Prairie Northern Coast Ranges, Kneeland Prairie 762 Comment
  UC659308  Lomatium dissectum var. dissectum Lincoln Constance, Alan A. Beetle with Joseph P. Tracy 1940-5-17 2617 Humboldt lower slopes of Buck Mt. near Eureka; Buck Mt. 792 Comment
  HSC55837  Lomatium macrocarpum G. L. Clifton, Terry Griswold 1979-7-25 10774 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1814 Comment
  UC1197155  Lomatium macrocarpum Joseph P. Tracy 1937-7-24 15522 Humboldt head of Devil's Hole (Trinity Summit); , Devil's Hole 1676 Comment
  HSC44440  Lomatium tracyi Barbara Kelly 1978-5-1 590 Humboldt 1/4 mi. from Horse Mtn., road 1/2 mi. below turnoff to summit, near end of unused gravel road Comment
  UC1197149  Lomatium tracyi Joseph P. Tracy 1933-7-9 12650 Humboldt Brannan Mt. Northern Coast Ranges, Brannan Mt. 1066 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
  HSC21549  Lomatium utriculatum F. Morrell 1949-5-14 16 Humboldt Berry Summit Comment
  OBI8842  Lomatium utriculatum Tracey Call, Viola Call 1964-6-19 2271 Humboldt 1 mi north of Harris P.O. and ca 3-1/2 mi south of Harris Jct Comment
  HSC95659  Lonicera hispidula var. vacillans Steven Lee 2004-4-25 22 Humboldt South Fork Rd., from Hwy. 299 to County Rd. 341, 1/8 mi. down river access trail at end of Rd. Comment
  HSC31654  Lonicera involucrata var. ledebourii Timothy B. Devine 1974-5-4 326 Humboldt Mad River floodplain 1 mi. from Blue Lake on Hatchery Rd. 305 Comment
  HSC40297  Lonicera involucrata var. ledebourii Linda M. Barker 1976-4-30 1400 Humboldt 3 mi. W of Arcata Comment
  HSC83836  Lonicera involucrata var. ledebourii F. R. Fosberg 1948-8-28 30053 Humboldt Dry Lagoon. Comment
  HSC97445  Lonicera involucrata var. ledebourii Ivy Watson 2008-10-11 57 Humboldt Near Mad River mouth, S bank, just above high tide line. Comment
  RSA1254  Lonicera involucrata var. ledebourii B. D. Stark 1929-7-24 590 Humboldt 8 miles S of Eureka. 30 Comment
  UC1197317  Lotus aboriginus J. P. Tracy 1902-7-4 1762 Humboldt immediate vicinity Eureka 0 Comment
  SEINET12154181  Lotus aboriginus J. P. Tracy 1949-1 18321 Humboldt nr Boynton PRairie 12miSE of Arcata Comment
  UC1223437  Lotus corniculatus Joseph P. Tracy 1938-6-7 15863 Humboldt n side Mad River (about 0.5 mi e of bridge on Trinity Highway) Comment
  UC1223438  Lotus corniculatus Joseph P. Tracy 1937-8-22 15677 Humboldt near Loleta (on Eel River bottom); Eel River Comment
  UC1223439  Lotus corniculatus Joseph P. Tracy 1950-9-22 19345 Humboldt 2 mi s Field's Landing town 6 Comment
  UCD106722  Lotus corniculatus S. P. Lynch 1975-6-19 1368 Humboldt Along U.S. Hwy 101 at Loleta. Comment
  RSA20779  Lotus crassifolius Carl B. Wolf 1937-8-13 9243 Humboldt North coast range, 8 mi. east of Hoopa Valley on new road towards Trinity summit. 1220 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
  HSC96219  Lotus humistratus M. Lindquist, C. Riley 2005-6-8 5 Humboldt 1.4 mi. S of Hwy. 299 on Titlow Hill Rd. 914 Comment
  RSA168893  Lotus micranthus Joseph P. Tracy 1936-5-30 14839 Humboldt Near Samoa on Humboldt Bay. 6 Comment
  UC168974  Lotus micranthus Joseph P. Tracy 1912-6-9 3647 Humboldt Alton Northern Coast Region 30 Comment
  UC1223395  Lotus micranthus Joseph P. Tracy 1938-6-8 15869 Humboldt Samoa San Dunes Comment
  UC1223429  Lotus micranthus Joseph P. Tracy 1936-6-8 14866 Humboldt near Trinidad 3 Comment
  SEINET3560061 Image available Lotus stipularis H. E. Parks 1932-7-1 Humboldt Bishop Pine Lodge, Trinidad 61 Comment
  UC495719  Lotus tenuis Mrs. C. M. Wilder 1924-6-1 Humboldt w of Bridgeville (at Kemps Maple Grove Ranch); Van Duzen River 152 Comment
  HSC56969  Lotus unifoliolatus var. unifoliolatus Overton, Butler 1979-7-23 9498 Humboldt Near Titlow Hill, close to the town of Willow Creek. 1280 Comment
  RSA168887  Lotus yollabolliensis Joseph P. Tracy 1941-8-28 17048 Humboldt South Fork Mountain; open glades along summit near Blake lookout 1738 Comment
  OBI33908  Lupinus David J. Keil 1983-7-2 17319 Humboldt Ca. 4 mi SE of SR 299 along Titlow Hill rd below Horse Mtn Summit rd Comment
  UC503012  Lupinus adsurgens Joseph P. Tracy Jul 16 1930-Jul 19 1930 9059 Humboldt near Blake lookout, South Fork Mountain along summit; Northern Coast Ranges, South Fork Mountain 1737 Comment
  UC146385 Image available Lupinus adsurgens Chesnut and Drew 1888-7-21 Humboldt w slope S. Fork Mt.; ; S Fork Mt., Humboldt Co. Comment
  UC146919  Lupinus albicaulis var. shastensis Harley P. Chandler June, 1901 1499 Humboldt near Weitchpec (Klamath River); North Coast Ranges, Klamath River 426 Comment
  HSC96074  Lupinus albifrons var. collinus J. McIntire, S. Lyon 2005-6-24 17 Humboldt FS NF1 1375 Comment
  HSC96201  Lupinus albifrons var. collinus Wanda Naylor, Laurel Goldsmith 2005-6-24 13 Humboldt S of Grouse Mountain on NF1 1595 Comment
Read comments
Jan 16 2014
  CHSC19515  Lupinus arboreus Wendell Wood 1970-10-7 307 Humboldt McKinleyville. Clam Beach. 0 Comment
  LA205182  Lupinus arboreus C. B. Wolf; 1930-10-28 1780 Humboldt Samoa, Humboldt Bay 15 Comment
  UC1129355  Lupinus arboreus H. L. Person 1931-7-30 Humboldt Fieldbrook; Eureka Quadrangle Comment
  SEINET10452623  Lupinus arboreus Mary Susan Taylor 1982-10-24 Taylor 5183 Humboldt T5N R1W nw sec 15. Eureka quad. Samoa, under bridge, ca. 1 mi nw of Eureka. Sea level. Sandy soils. 0 Comment
  POM349994  Lupinus benthamii var. benthamii Vera Townsend 1934-3-24 s.n. Humboldt Near Sequoia Comment
  HSC14790  Lupinus bicolor J. R. Woodside 1963-5-19 1 Humboldt 1 1/4 mi. N of Fairhaven Comment
  HSC98930  Lupinus bicolor Cara Witte 2007-6-7 224 Humboldt Along National Forest 1 on Kinsey Ridge. 1 mile south of intersection with 4N06. 1263 Comment
  SEINET6932627  Lupinus bicolor Wanda P. Vestal, A. G. Vestal 1937-6-19 s.n. Humboldt Terrace west of Eel River, 2 miles west of Gaberville. Comment
  HSC32156  Lupinus constancei D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5602 Humboldt Mt. Lassic and two smaller peaks to immediate E 1768 Comment
  SEINET12154563  Lupinus latifolius J. P. Tracy 1936-1 15036 Humboldt Grouse Mtn 1524 Comment
  POM66233  Lupinus latifolius subsp. latifolius Marcus E. Jones 1924-4-25 s.n. Humboldt Garberville Comment
  RSA167420  Lupinus latifolius subsp. latifolius Joseph P. Tracy 1933-8-30 13032 Humboldt Grouse Mountain, near Clear Lake. 1524 Comment
  HSC74224  Lupinus latifolius subsp. viridifolius M. A. Baker 1980-7-19 3018 Humboldt Near Bret Hole. 1814 Comment
  UC503013  Lupinus latifolius var. latifolius Joseph P. Tracy Jul 16 1930-Jul 19 1930 8970 Humboldt near McKay Camp South Fork Mountain (South Fork Mountain); Northern Coast Ranges, South Fork Mountain 1676 Comment
  SBBG3657  Lupinus latifolius var. viridifolius H. and M. Dearing 1939-5-24 3416 Humboldt 5 mi S of Alton Comment
  UC1223292  Lupinus latifolius var. viridifolius Joseph P. Tracy 1939-4-29 16252 Humboldt 2 mi below Orleans (nw side Klamath River); Klamath River, below Orleans 1219 Comment
  HSC14918  Lupinus lepidus Allan R. Marshall 1962-5-13 15 Humboldt W side of Redwood Creek Bridge, along Hwy. 299 259 Comment
  UC1281746  Lupinus lepidus var. sellulus Richard Spellenberg 1965-6-13 1110 Humboldt about 3/4 mi s Highway through Hoopa Indian Reservation (along road on e side of river); e side Trinity Riverk hw through Hoopa Indian Reservation Comment
  HSC100522  Lupinus nanus Carl C. Marshall 1885-5-11 34 Humboldt Peninsula near Fairhaven. Comment
  JEPS65420  Lupinus polyphyllus W. L. Jepson 1902-6-24 1927 Humboldt Eureka to Arcata; Eureka to Arcata Comment
  HSC14860  Lupinus polyphyllus H. E. Parks, S. T. Parks May 1930 737 Humboldt Vicinity of Alton Comment
  UC419035  Lupinus polyphyllus var. polyphyllus H. E. and S. T. Parks May 1930 737 Humboldt vicinity Alton; vicinity of Alton Comment
  SEINET10488860  Lupinus rivularis Smith 1948-5-10 Smith 48246 Humboldt Hwy. 101--Red crest, few redwoods, 1 mi s. Comment
  BLMAR289  Luzula comosa Jennifer Anthony-Wheeler 2000-4-18 289 Humboldt King range, growing on rocky ridgeline, outcrop/vista in millcrk forest 402 Comment
  HSC57382  Luzula comosa Overton, Butler 1979-7-26 10102 Humboldt Near Cold Spring, close to the town of Willow Creek 1417 Comment
  UC1152128  Luzula comosa Joseph P. Tracy 1934-6-27 11040 Humboldt in open forest Horse Mountain Horse Mountain 1432 Comment
  UC1152129  Luzula comosa Joseph P. Tracy 1930-7-23 9128 Humboldt at Cold Springs (Grouse Mountain); , at Cold Springs 1432 Comment
  UC1152138  Luzula comosa var. laxa Joseph P. Tracy 1947-7-5 17816 Humboldt Meadow at Box Camp, on west side Trinity Summit 1463 Comment
  UC183777  Luzula macrantha Joseph P. Tracy 1901-5-12 1087 Humboldt At Eureka; Northern Coast Region 0 Comment
  HSC102061  Luzula parviflora subsp. parviflora M. R. Mesler, Robin Bencie, K. A. Wayman 2011-7-12 1162 Humboldt Patterson Meadows 1566 Comment
  UC1152139  Luzula subsessilis Joseph P. Tracy 1941-3-23 16807 Humboldt Carlotta 5 mi e Town (open flat by old Strong's District School House); Carlotta, 5 mi e of town 60 Comment
  RSA78055  Lychnis coronaria P. A. Munz 1952-6-27 17799 Humboldt Boise Creek Public Camp west of Willow Creek. Comment
  HSC23836  Lycopodium clavatum R. A. Vanbianchi 1971-11-19 101 Humboldt Comment
  SEINET3862856 Image available Lycopodium clavatum H. E. Parks, W. K. Parks 1932-7-30 01132 Humboldt Campp 21', Hammond Lumber Company, Trinidad.; 0 152 Comment
  RSA183502  Lysichiton americanus T. L. Grosz 1964-5-1 C Humboldt 300 yards up on Park Ave. and behind Myrtle Ave. Comment
  CAS-BOT-BC344359  Madia exigua Doris K. Kildale 1927-6-25 3575 Humboldt Fearren's Ranch between Thorn & Shelter Cove Comment
  CAS-BOT-BC343027  Madia gracilis Doris K. Kildale 1928-6-24 5282 Humboldt Horse Mountain 914 Comment
  CAS-BOT-BC343029  Madia gracilis David D. Keck 1944-7-11 5500 Humboldt 12.3 mi. S.E. of Petrolia; halfway between upper Mattole and Honeydew, Mattole River 121 Comment
  HSC72617  Madia gracilis J. P. Smith 1977-7-3 9239 Humboldt Six Rivers National Forest, on Rd. to Onion Lake, 4.7 mi. from junction with Hwy. 36 610 Comment
  HSC74087  Madia gracilis Thomas W. Nelson, James Nelson 1976-5-30 2615 Humboldt McKeown Ranch, N of Dinsmore. Comment
  UC166273  Madia gracilis Joseph P. Tracy 1901-7-31 1236 Humboldt near Hydesville 60 Comment
  UC176779  Madia gracilis Joseph P. Tracy 1908-6 2694 Humboldt opposite Buck Mountain; Valley of Van Duzen River 762 Comment
  HSC95524  Madia sativa Andrea Pickart 2002-7-19 178 Humboldt Arcata Marsh at end of I St. 10 Comment
  UC1069897  Madia sativa H. L. Person 1932-8-15 Humboldt Korbel Eureka Quadrangle Comment
  UC1223207  Madia sativa Joseph P. Tracy 1950-6-8 18758 Humboldt at hill leading from the coast toward Petrolia; Domingo Hill Comment
  RSA554592  Mahonia aquifolium W. Wisura 1993-5-9 4910 Humboldt Northwest: Hwy 299, 5.7 mi. W of Willow Creek at E-fork camp ground. Comment
  HSC15595  Maianthemum dilatatum A. E. Inman 1962-5-25 Humboldt S bank of Mad River, 50 yds W of Hwy. 299 bridge Comment
  CAS-BOT-BC508504  Maianthemum dilatatum Myrtle Paulson 1918-4-28 s.n. Humboldt Eureka Comment
  HSC15591  Maianthemum dilatatum W. F. Nickel 1965-5-15 Humboldt 0.5 mi. E of Arcata on rd. to Arcata Reservoir Comment
  RSA244984  Maianthemum dilatatum M. N. Gold 1966-5-15 25 Humboldt Dry Lagoon State Park, 13 miles north of Trinidad Comment
  UC726017  Maianthemum dilatatum A. A. Heller 1937-6-8 15899 Humboldt 3 mi. n. Trinidad (forest near coast at Bishop Pine Lodge); Bishop Pine Lodge Comment
  HSC74330  Maianthemum racemosum subsp. amplexicaule Gail Newton 1980-6-16 145 Humboldt Near Monks Camp. 1097 Comment
  CHSC85575  Maianthemum stellatum L. P. Janeway 2003-7-30 7939 Humboldt High North Coast Ranges. Cold Spring; 0.6 km north of the top of Titlow Hill. 1454 Comment
  UC479395  Malacothrix floccifera Marcus E. Jones, A. M. 1931-7-15 29095 Humboldt e of Arcata (junction) Comment
  CAS-BOT-BC347409  Malacothrix floccifera Walter Knight 1964-9-20 714 Humboldt Roadside US 101. Between Mendocino-Humboldt Co. line and Devoy Grove Comment
  UCD113220  Malus fusca H. E. Parks 1933-4-1 4352 Humboldt Spruce Cove, Trinidad. Comment
  HSC65125  Marah oregana J. P. Smith 1971-10-6 4968 Humboldt End of Murray Rd. in McKinleyville. Comment
  HSC7032  Marah oregana G. N. Bos 1965-5-15 268 Humboldt 2 mi. W of Berry Summit along U.S. 299. 701 Comment
  UC168954  Marah oregana Joseph P. Tracy 1909-5-30 2980 Humboldt Eureka Northern Coast Region 0 Comment
  UC1199281  Matricaria discoidea Joseph P. Tracy 1913-6-22 4265 Humboldt opposite Buck Mountain (Dinsmore's Ranch); Northern Coast Ranges, Valley of the Van Duzen River 762 Comment
  UC160957  Medicago lupulina Harley P. Chandler June, 1901 1423 Humboldt Klamath River Northern Coast Ranges 304 Comment
  UC1103429  Medicago polymorpha Joseph P. Tracy 1934-3-25 13169 Humboldt Blue Slide Van Duzen River 91 Comment
  UC1137002  Melica aristata August L. Hormay 1932-5-12 Humboldt n Garberville (Redwood Hwy, Bull Creek Rd) Comment
  UC1145137  Melica californica Joseph P. Tracy 1938-6-9 15886 Humboldt 2 mi nw Harris (Mail Ridge) 914 Comment
  HSC101165  Melica harfordii Dana York, Kim Hayler 2012-5-18 3105 Humboldt Six Rivers National Forest, near Somes Bar, 585 meters SE of the confluence of the Klamath and Salmon Rivers, E and above Hwy. 96. 213 Comment
  UC526903  Melica harfordii Joseph P. Tracy 1926-6-20 7651 Humboldt Horse Mountain; Northern Coast Ranges 1524 Comment
  UCD87500  Melica harfordii Freed W. Hoffman 1946-5-24 1718 Humboldt Willow Creek. Comment
  CAS-BOT-BC262472  Melica subulata Joseph P. Tracy 1935-7-25 14224 Humboldt Trinity Summit. Near Corral Prairie 1584 Comment
  UCD88652  Melica subulata A. H. Murphy 1951-5-18 41 Humboldt K. Roscoe Ranch, Upper Mattole. Comment
  UCD88673  Melica subulata R. Tofsrud 1949-7-1 s.n. Humboldt On road from Scotia to Capetown. Comment
  HSC26919  Melilotus albus Brad Klipfel 1973-7-30 218 Humboldt Samoa Rd., near Mad River Slough Comment
  RSA167274  Melilotus albus Joseph P. Tracy 1949-7-7 18336 Humboldt Blue Slide, on Van Duzen River. Comment
  HSC15016  Melilotus indicus D. E. Anderson 1961-9-2 1762 Humboldt 3 mi. S of Cape Mendocino 3 Comment
  POM47605  Melissa officinalis Unspecified 1923-7-29 91 Humboldt Rohnerville. Damp flat. 15 Comment
  UC577380  Mentha aquatica Joseph P. Tracy 1927-10-8 8388 Humboldt Arcata Bottom 9 Comment
  UCD125071  Mentha aquatica Joseph P. Tracy 1943-11-14 17451 Humboldt Field's Landing. 2 miles south of town. 6 Comment
  JEPS63443  Mentha spicata Joseph P. Tracy 1925-8-16 7233 Humboldt Trinity River Valley near the South Fork; Northern Coast Ranges, Trinity River Valley near South Fork 182 Comment
  UC166030  Mentzelia dispersa Joseph P. Tracy 1908-6 2843 Humboldt n/w slope Buck Mountain; Northern Coast Ranges 1219 Comment
  UC582506  Micropus californicus var. californicus Joseph P. Tracy 1927-7-4 8235 Humboldt Iaqua 609 Comment
  SEINET198985  Micropus californicus var. californicus S. K. Harris, JP Tracy 1942-6-15 sn Humboldt Harris Road 1 mi E of Garberville Comment
  CAS-BOT-BC348835  Microseris douglasii subsp. douglasii K. L. Chambers 1969-5-25 2923 Humboldt On road to Harris 5.2 mi. E of the freeway overpass at Garberville Comment
  UC1223198  Microseris douglasii subsp. douglasii Joseph P. Tracy 1950-7-6 19001 Humboldt 2 mi s Burr Valley (on the Albee Road) 1158 Comment
  UC1223199  Microseris douglasii subsp. douglasii Joseph P. Tracy 1948-5-31 17988 Humboldt near w side summit of Spruce Grove (near Harris) 762 Comment
  CAS-BOT-BC322677  Microseris laciniata S. K. Harris; J. P. Tracy; H. S. Yates 1936-6-17 3482 Humboldt Highway about one mile west of Bridgeville Comment
  CAS-BOT-BC322679  Microseris laciniata Doris K. Kildale 1926-6-27 2186 Humboldt McClellan Mountain 822 Comment
  HSC70251  Microsteris gracilis M. A. Baker 1980-6-8 1917 Humboldt Near Buck Flat. 1554 Comment
  HSC77403  Microsteris gracilis L. P. Janeway 1983-4-16 229 Humboldt Near the old Hwy. 299 on W side of Berry Summit. 823 Comment
  BLMAR683  Mimulus aurantiacus Jennifer Wheeler 2013-6-7 683 Humboldt King range, Strawberry Rock 35 Comment
  UC1063411  Mimulus aurantiacus var. aurantiacus H. L. Person 1932-7-23 Humboldt road e Korbel; Eureka Quadrangle Comment
  UC169016  Mimulus aurantiacus var. aurantiacus Harley P. Chandler 1901-5-22 1240 Humboldt near Nance's; North Coast Ranges, Mad River 91 Comment
  UC1239052  Mimulus cardinalis Freed W. Hoffman 1949-7-15 3011 Humboldt a little s Blue Ridge (bottom of Mule Slide); North Coast Ranges, Mt. Lassic area Comment
  RSA80079  Mimulus dentatus F. W. Peirson 1926-7-13 7055 Humboldt On south side of Mad River, near Blue Lake. Comment
  UC175712  Mimulus douglasii Joseph P. Tracy 1913-6-19 4208 Humboldt opposite Buck Mountain (Dinsmore's Ranch); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  UC198662  Mimulus douglasii Joseph P. Tracy 1915-5-20 4639 Humboldt Eureka Northern Coast Ranges Comment
  UC1011930  Mimulus grandis F. W. Pennell and J. P. Tracy 1940-7-8 26107 Humboldt e Eureka; Freshwater 9 Comment
  JEPS10795  Mimulus inodorus Joseph P. Tracy 1932-7-16 10610 Humboldt Corral Prairie Trinity Summit 1584 Comment
  JEPS10794  Mimulus inodorus Lincoln Constance 1934-6-18 895 Humboldt border N. Dyerville Flat (near South Fork R.R. Station and P.O.); South Fork Eel River, Bull Creek Region Comment
  UC1196773  Mimulus inodorus Joseph P. Tracy 1917-9-2 4845 Humboldt near top Grouse Mtn.; Northern Coast Ranges 1524 Comment
  HSC76220  Mimulus moschatus Overton, Butler 1979-7-24 9768 Humboldt Near Black Rock, close to the town of Willow Creek 1463 Comment
  RSA447970  Mimulus moschatus E. S. Spalding, Williamson 1924-7-11 s.n. Humboldt Arcata. Comment
  CAS-BOT-BC388620  Minuartia douglasii Henry M. Pollard 1948-7-31 s.n. Humboldt Orleans Mt. Trail 914 Comment
  SEINET11943609  Minuartia douglasii H. P. Chandler 1901-1 1454 Humboldt Klamath River 305 Comment
  HSC44280  Mitella ovalis Barbara Kelly 1977-4-23 305 Humboldt 2.5 mi. S of Shelter Cove Rd., S Fork of Bear Creek at Wailaki Campground 561 Comment
  HSC38514  Moehringia macrophylla D. E. Anderson, J. P. Smith 1971-6-18 - 1086 Humboldt Horse Mtn. Comment
  HSC48742  Moehringia macrophylla Brad Klipfel 1973-6-10 67 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC58317  Moehringia macrophylla Overton, Butler 1979-8-2 12605 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  JEPS79819  Moehringia macrophylla Joseph P. Tracy 1935-7-25 14225 Humboldt near Corral Prairie (Trinity Summit); , near Corral Prairie 1584 Comment
  HSC41204  Moehringia macrophylla Thomas W. Nelson, Jane P. Nelson 1977-6-19 3505 Humboldt Along creek draining N end of Pond above Alder Springs 1585 Comment
  HSC58348  Monardella glauca Overton, Butler 1979-8-2 12682 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  UC577361  Monardella odoratissima subsp. glauca Joseph P. Tracy 1933-7-26 12913 Humboldt Grouse Mountain North Coast Ranges 1630 Comment
  CAS-BOT-BC220259  Monardella sheltonii Henry M. Pollard 1948-7-19 s.n. Humboldt Between Orleans and Van Fleet ranch Comment
  UC2035871  Monardella villosa subsp. villosa C. Epling 1938-1 Humboldt Klamath River near Orleans. Comment
  UC1409015  Monotropa hypopitys Robert F. Thorne and P. Everett 1965-8-5 35132 a Humboldt Wailaki Recreation Site 609 Comment
  HSC65194  Monotropa hypopitys T. Jimerson, J. Pageau, L. Banta 1979-6-18 925 Humboldt Waterman Ridge, at the end of FS 7N02, Willow Creek Comment
  CAS-BOT-BC444806  Montia diffusa Volney Rattan 1875-1-1 s.n. Humboldt Unspecified Comment
  CAS-BOT-BC445047  Montia linearis Volney Rattan 1882-1-1 s.n. Humboldt Kneeland Prairie Comment
  CAS-BOT-BC445157  Montia parvifolia Doris K. Kildale 1928-6-24 5263 Humboldt Redwood Creek at Berry's 289 Comment
  CAS-BOT-BC445159  Montia parvifolia W. R. Dudley 1899-6-1 s.n. Humboldt Eureka Penninsula [Peninsula] Comment
  CAS-BOT-BC445163  Montia parvifolia Harley P. Chandler 1901-5-1 1261 Humboldt North Coast Ranges. Redwood Belt 152 Comment
  UC1197939  Morella californica Joseph P. Tracy 1924-1-20 6596 Humboldt Northern Coast Region. Around Humboldt Bay near Samoa Comment
  CAS-BOT-BC260571  Muhlenbergia filiformis Joseph P. Tracy 1930-7-16 8920 Humboldt South Fork Mountain: at McKay Camp 1676 Comment
  HSC70359  Myosotis discolor M. A. Baker 1980-6-7 1874 Humboldt Near Ammon Creek 732 Comment
  HSC3723  Myosotis sylvatica D. A. Shally 1965-5-15 49 Humboldt Arcata, 1/4 mi. NE of HSC campus on Jolly Giant Creek Comment
  POM257618  Myrica californica C. L. Hitchcock, J. S. Martin 1939-7-14 5437 a Humboldt Bluffs facing sea at Shelter cove Comment
  UC1197938  Myrica californica J. P. Tracy 1901-4-21 1034 Humboldt immediate vicinity Eureka (Ricks Prairie); Ricks Prairie 0 Comment
  JEPS79940  Navarretia Joseph P. Tracy 1937-7-19 15464 Humboldt Larrabee Valley Northern Coast Ranges, Larrabee Valley 701 Comment
  HSC102509  Navarretia capillaris M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-28 1494 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1106 Comment
  HSC45289  Navarretia capillaris Brad Klipfel 1973-6-10 293 Humboldt E face of Grogan's Hole, N Trinity Mtn. area Comment
  UC133919  Navarretia intertexta Harley P. Chandler Jun 1901 1411 Humboldt Klamath River North Coast Ranges 243 Comment
  UC60864  Navarretia intertexta Mrs. M. H. Manning Apr 1901 Humboldt Hupa Comment
  JEPS70336  Navarretia intertexta W. L. Jepson 1902-7-11 2019 Humboldt Martin's Ranch South Fork Trinity River Comment
  JEPS70369  Navarretia leucocephala subsp. bakeri Joseph P. Tracy 1928-6-24 8476 Humboldt between Middle Yager Creek and North Yager Creek (East Ranch) 762 Comment
  HSC81574  Navarretia mellita Thomas W. Nelson, Jane P. Nelson 1980-7-15 6068 Humboldt Old logging rds. SE of Lundbar Hills 30 Comment
  JEPS70445  Navarretia pubescens Joseph P. Tracy 1916-6-20 4733 Humboldt Alder Point Northern Caost Ranges 152 Comment
  UCR30859  Navarretia squarrosa A. C. Sanders 1981-8-6 2308 Humboldt Russ Park, City of Ferndale 46 Comment
  UCR37590  Nemophila menziesii var. atomaria L. P. Janeway 1983-4-16 233 Humboldt Near the old Hwy 299 on W side of Berry Summit 823 Comment
  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
  BLMAR494  Nemophila parviflora Jennifer Wheeler 2009-4-30 494 Humboldt King range, Hidden Valley trail; trail start Comment
  CAS-BOT-BC219411  Nemophila parviflora Greg de Nevers 2001-4-17 12248 Humboldt Northwest slopes of Buck Mountain. 822 Comment
  UC1245393  Nemophila parviflora Joseph T. Gregory 1933-7-11 364 Humboldt nr Clear Lake (Grouse Mt.); nr Clear Lake, Grouse Mt. 1524 Comment
  UCD110176  Notholithocarpus densiflorus Joseph M. DiTomaso 1976-3-28 351 Humboldt West of Lord Ellis summit on Highway 299 between Arcata and Willow Creek. 762 Comment
  HSC8078  Notholithocarpus densiflorus var. densiflorus D. E. Anderson 1961-8-27 1759 Humboldt 8 mi. W of Redwood Creek Br. along Hwy. 299 Comment
  OBI36374  Notholithocarpus densiflorus var. densiflorus David J. Keil 1983-7-1 17266 Humboldt Ca. 8 mi W of jctn US 101 along Bull Creek Flats rd Comment
  HSC41314  Notholithocarpus densiflorus var. echinoides Brad Klipfel 1974-9-2 541 Humboldt Horse Mountain Comment
  UC275320  Nuphar lutea subsp. polysepala Joseph P. Tracy 1923-6-27 6385 Humboldt Trinity River Valley near the South Fork, Lack Pond Lack Pond; Northern Coast Ranges, Trinity River Valley, Lack Pond 182 Comment
  HSC77337  Nuttallanthus texanus L. P. Janeway 1983-5-19 299 Humboldt Samoa Peninsula, 0.5 mi. N of Eureka-Samoa bridge, between RR tracks and old Samoa Road near W edge of Arcata Bay 3 Comment
  JEPS11312  Nuttallanthus texanus Joseph P. Tracy 1918-5-5 4921 Humboldt Ocean Beach at Humboldt Bay Ocean Beach; Northern Coast Region, Humboldt Bay, Ocean Beach Comment
  HSC79334  Oemleria cerasiformis D. H. Norris 1970-5-20 12218 Humboldt Crest of Big Hill Rd. E of Hoopa Comment
  UC1222314  Oemleria cerasiformis Joseph P. Tracy 1951-6-21 19514 Humboldt opposite Willow Creek; Trinity Valley Comment
  UC1222315  Oemleria cerasiformis Joseph P. Tracy 1950-4-20 18618 Humboldt 2 mi w Dinsmore's (nw slope of Buck Mountain, lower slopes); Buck Mountain 762 Comment
  UC314582  Oenanthe sarmentosa Joseph P. Tracy 1924-9-28 6910 Humboldt Centerville Northern Coast Ranges, Centerville 6 Comment
  UC314583  Oenanthe sarmentosa Joseph P. Tracy 1924-9-28 6910 Humboldt Centerville Northern Coast Ranges, Centerville 6 Comment
  CAS-BOT-BC436010  Oenanthe sarmentosa W. R. Dudley 1899-6-21 s.n. Humboldt Near Scotia Comment
  CDA38490  Oenanthe sarmentosa Tario 1932-10-7 s.n. Humboldt [no further data] 0 Comment
  HSC93791  Oenothera wolfii D. K. Imper 1986-6-5 21 Humboldt Adjacent to onramp, Hwy. 101 S , S side of Klamath River, S of Klamath 12 Comment
  HSC37886  Olsynium douglasii var. douglasii Thomas W. Nelson 1976-4-3 2288 Humboldt On large rock at head of Goat Rock slide, N side of Van Duzen River Comment
  HSC86996  Olsynium douglasii var. douglasii Brent Helm, Curtis Miller, Mark Steiger 1988-3-30 55 Humboldt 8 mi. S on Titlow Hill Rd. 1159 Comment
  JEPS11679  Orobanche californica subsp. californica Joseph P. Tracy 1924-8-3 6761 Humboldt Big Lagoon. Comment
  CAS-BOT-BC499670  Orobanche californica subsp. californica Edward Lee 1934-8-17 1152 Humboldt East shore of Big Lagoon, 35 mi N of Eureka 3 Comment
  UC35316  Orobanche fasciculata Chesnut and Drew 1888-7-12 Humboldt Jarnigan's. Comment
  HSC45381  Orobanche fasciculata R. York 1978-5-20 175 Humboldt Above Bluff Creek Trail on W facing slope. 610 Comment
  UC906645  Orogenia fusiformis Joseph P. Tracy 1942-6-23 17252 Humboldt near top Trinity Summit (w. of Water-Dog Lakes) 1828 Comment
  UC1197566  Orthilia secunda Joseph P. Tracy 1940-7-7 16663 Humboldt Grouse Mt. on Friday Ridge 1371 Comment
  RSA402001A  Orthocarpus erianthus Hutchinson 1927-05 s.n. Humboldt [No location information provided.] Comment
  UC582575  Orthocarpus imbricatus Joseph T. Gregory 1932-7-11 10416 Humboldt open places at Corral Prairie (Trinity Summit); , open places at Corral Prairie 1584 Comment
  HSC100677  Orthocarpus lithospermoides Carl C. Marshall Jun 1887 406 Humboldt Spruce Grove. 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
  HSC45577  Osmorhiza berteroi Diane L. Reed 1978-5-7 48 Humboldt Friday Ridge Road, near intersection with Hwy. 299 Comment
  UC183665  Osmorhiza occidentalis Joseph P. Tracy 1913-6-20 4238 Humboldt Buck Mountain Northern Coast Ranges (lower foothills, on nw slope) 762 Comment
  HSC33182  Osmorhiza purpurea Thomas W. Nelson 1974-4-20 1185 Humboldt Near Elk Head N of Trinidad Comment
  HSC46169  Oxalis oregana J. P. Smith 1973-5-26 6852 Humboldt Scotia Bluffs along the Eel River near Rio Dell. Comment
  UC1103427  Oxalis oregana Joseph P. Tracy 1927-5-15 8044 Humboldt Sugar Bowl Mt., on rd between Willow Creek and Hoopa Northern Coast Ranges 457 Comment
  HSC16712  Oxalis pes-caprae Richard Steele 1962-3-20 12 Humboldt Arcata, on HSU campus 15 Comment
  SD64134  Oxalis rubra W. Bertsch 1953-7-30 221 Humboldt Redwoods-Dyerville-Highway 101 60 Comment
  HSC99469  Oxalis trilliifolia K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-14 123 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  CAS-BOT-BC318158  Packera bolanderi var. bolanderi Volney Rattan 1878-1-1 s.n. Humboldt unspecified Comment
  UC1145218  Panicum acuminatum var. acuminatum Joseph P. Tracy 1942-7-18 17286 Humboldt 1/2 mi ne Garberville; ne of Garberville 304 Comment
  UC187239  Panicum acuminatum var. acuminatum Joseph P. Tracy 1900-8-26 925 Humboldt at Eureka Northern Coast Region, at Eureka 0 Comment
  UC196966  Panicum acuminatum var. acuminatum Joseph P. Tracy 1915-6-6 4645 Humboldt at Eureka Eureka; Northern Coast Region, at Eureka 0 Comment
  CAS-BOT-BC253706  Panicum capillare Carl D. Duncan 1920-9-22 s.n. Humboldt Hoopa Valley Comment
  CDA2147  Panicum miliaceum T. R. Haig 1975-8-27 Humboldt Korbel. 0 Comment
  HSC39757  Parapholis strigosa Peter Sorensen 1976-7-11 Humboldt Woodley Island. Comment
  CDA6387  Parentucellia viscosa T. C. Fuller 1961-9-28 7060 Humboldt 1.5 miles south of Samoa. 0 Comment
  HSC90750  Parentucellia viscosa Jean Hanson 1980-6-22 95 Humboldt Indian (Gunther) Island, Humboldt Bay, City of Eureka, W end of island Comment
  SEINET10810981  Parentucellia viscosa J. Richard Abbott, B. S. Carlsward 1999-7-7 Abbott 13017 Humboldt North of McKinleyville on U.S. 101 (a few kilometers north of Eureka), on northbound off-ramp (southbound labelled as Route 101 Business) leading to Clam Beach County Park. Comment
  HSC104072  Parnassia palustris S. Carothers 2001-8-29 Humboldt Six Rivers National Forest; Lassics Botanical Area 1537 Comment
  UC1103769  Paspalum dilatatum Fred M. Kay 1929-10-1 Humboldt near Blocksburg 457 Comment
  HSC39934  Paxistima myrsinites J. O. Sawyer 1970-6-25 2291 Humboldt 1646 Comment
  UC582555  Pedicularis groenlandica Joseph P. Tracy 1932-7-16 10639 Humboldt Corral Prairie; Trinity Summit 1584 Comment
  RSA187565  Pellaea andromedifolia S. K. Harris 1960-7-11 21651 Humboldt 3.8 miles west of Redway Comment
  HSC39680  Pellaea brachyptera Thomas W. Nelson, Jane Nelson 1976-6-16 2742 Humboldt Just W of Alder Springs 1524 Comment
  CHSC33041  Penstemon anguineus Thomas Nelson; Jane Nelson 1976-7-1 2907 Humboldt The Lassics. Growing along east side of Red Lassic; beside rd. 1S07. 1676 Comment
  HSC102049  Penstemon anguineus M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-13 953 Humboldt Along trail from Rustic Camp to Patterson Meadows 1534 Comment
  HSC55753  Penstemon anguineus G. L. Clifton, Terry Griswold 1979-7-26 10285 Humboldt Near Salmon Mtn., close to the town of Forks of Salmon 1935 Comment
  HSC56254  Penstemon anguineus Walter Overton 1979-8-1 12387 Humboldt Near Packsaddle Ridge, close to the town of Hoopa 1341 Comment
  JEPS7203  Penstemon anguineus W. L. Jepson 1902-7-24 2112 Humboldt Trinity Summit 1828 Comment
  RSA425609  Penstemon anguineus H. M. Pollard 1948-7-31 s.n. Humboldt Orleans Mt. 1372 Comment
  HSC98766  Penstemon anguineus Cara Witte 2008-6-27 762 Humboldt Along National Forest 1 near Kinsey Ridge. 1/2 mile north of cattle guard. 1397 Comment
  RSA425608  Penstemon anguineus Francis W. Pennell, Joseph P. Tracy 1940-7-7 26092 Humboldt Grouse Mountain, w. of Salyer. 1372 Comment
  RSA63666  Penstemon anguineus Milo S. Baker 1947-8-10 11911 Humboldt Near end of Forest Rd from Hoopa towards Trinity Summit. 1372 Comment
  SDSU10915  Penstemon anguineus D. F. Howe 1964-8-7 3945 Humboldt 6.2 miles from #96 on Mill Creek Road, Hoopa Valley. 1067 Comment
  UC1245389  Penstemon anguineus Joseph T. Gregory 1933-7-16 449 Humboldt nr MacKay Camp (edge of swamp); nr MacKay Camp 1737 Comment
  UCD124036  Penstemon anguineus Thomas Nelson; Jane Nelson 1976-7-1 2907 Humboldt east side of Red Lassic, beside Road 1S07. 1676 Comment
  HSC76256  Penstemon heterophyllus Denis Kearns 1981-7-6 43 Humboldt Near Mosquito Lake 1122 Comment
  JEPS11633  Penstemon laetus var. sagittatus Joseph P. Tracy 1935-7-14 14073 Humboldt Grouse Mountain North Coast Ranges, Grouse Mountain 1524 Comment
  RSA120319  Penstemon laetus var. sagittatus S. S. Tillett 1956-7-6 608 Humboldt On E facing slope above Klamath River, along Ishi Rish Road, approx. 1.5 mi from Orleans. 198 Comment
  HSC56200  Penstemon newberryi subsp. berryi Gilbert Muth 1979-8-1 12170 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1677 Comment
  RSA517741  Penstemon newberryi subsp. berryi W. K. Parks 1933-07 s.n. Humboldt South Fork Mountain. Comment
  UC1245388  Penstemon newberryi var. berryi Joseph T. Gregory 1935-7-26 765 Humboldt rocks near Water Dog Lakes Trinity Summit 1828 Comment
  UC1543128  Penstemon newberryi var. berryi W. K. Parks Jul 1933 1433 Humboldt South Fork Mountain Comment
  HSC100681  Penstemon rattanii Carl C. Marshall Jun 1886 20 Humboldt Near Kneeland Prairie. Comment
  UC103111  Penstemon rattanii Volney Rattan June 1878 Humboldt Comment
  HSC37502  Pentagramma triangularis J. D. Ackerman 1974-5-25 264 Humboldt 0.25 mi. S of Lufenholtz Beach off Scenic Dr. between Moonstone and Trinidad Comment
  UC1197322  Perideridia gairdneri subsp. borealis Joseph P. Tracy 1913-9-7 4390 Humboldt Eureka Northern Coast Region 0 Comment
  SEINET12119285  Perideridia howellii J. P. Tracy 1950-1 19331 Humboldt along Larrabee Creek, 0.5 mi along Blocksburg Road W from bridge across Larrabee Creek Comment
  HSC70535  Perideridia parishii subsp. latifolia Gail Newton 1980-7-20 1643 Humboldt Near Bell Swamps 1426 Comment
  CAS-BOT-BC419195  Persicaria maculosa Henry M. Pollard 1946-9-1 s.n. Humboldt Near Wilson Creek, Orleans region Comment
  HSC6050  Petasites frigidus var. palmatus C. O. Baker 1962-3-22 6 Humboldt 2 mi. S of Trinidad along old Hwy. 101 183 Comment
  SEINET11809912  Petasites palmatus J. P. Tracy 1947-1 17670 Humboldt Van Duzen River, near Grizzly Creek 91 Comment
  HSC70344  Phacelia heterophylla Gail Newton 1980-6-7 122 Humboldt Near Brush Mtn. 1128 Comment
  HSC60087  Phacelia heterophylla M. A. Baker 1978-5-6 478 Humboldt 2 km. S of Weitchpec Comment
  UC660089  Phacelia heterophylla subsp. virgata G. L. Stebbins Jr. 1941-5-27 3111 Humboldt 1/4 mi w Bridgerville (on hwy to Eureka) Comment
  HSC57658  Phacelia mutabilis G. L. Clifton, Griswold 1979-7-25 10831 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1814 Comment
  UC906636  Phacelia mutabilis Joseph P. Tracy 1947-7-9 17832 Humboldt lower slopes Horse Mountain 1219 Comment
  HSC102194  Phacelia procera M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-4 1108 Humboldt Along trail (abandoned Road 6E74) from Andy's Camp to Patterson Meadows 1563 Comment
  UCD88333  Phalaris angusta A. A. Beetle; J. P. Tracy, G. L. Stebbins Jr. 1942-6-2 3465 Humboldt 1 mile E of Alton. Comment
  UC1103768  Phalaris californica Joseph P. Tracy 1927-8-28 8359 Humboldt near Boynton Prairie; North Coast Ranges, near Boynton Prairie 609 Comment
  CAS-BOT-BC250685  Phalaris paradoxa W. A. Silveus 1931-6-9 2990 Humboldt Dyerville Comment
  UC615281  Philadelphus lewisii Beryl O. Schreiber 1932-7-12 372 Humboldt near Klamath Comment
  UC725910  Philadelphus lewisii A. A. Heller 1923-7-9 13776 Humboldt near Blue Lake (5 mi from Arcata) Comment
  HSC58664  Phleum alpinum G. L. Clifton, Griswold 1979-8-1 12026 Humboldt Near High Spring, close to the town of Hoopa. 1798 Comment
  CAS-BOT-BC250881  Phleum pratense Doris K. Kildale 1928-6-24 7064 Humboldt Redwood Creek at Berry's Comment
  HSC48310  Phleum pratense Brad Klipfel 1973-8-3 297 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  UC52358  Phlox adsurgens Joseph Burtt Davy and Walter C. Blasdale 1899-5 5708 Humboldt above Three Creeks Comment
  UCD118236  Phlox adsurgens H. P. Olmo 1928-6-10 s.n. Humboldt Wooley Creek. Comment
  HSC70233  Phlox diffusa M. A. Baker 1980-6-8 1895 Humboldt Near Buck Flat. 1554 Comment
  UC1198553  Phlox douglasii subsp. rigida Joseph P. Tracy 1927-6-12 8142 Humboldt Horse Mountain 1432 Comment
  UC1222725  Phlox gracilis Joseph P. Tracy 1950-5-7 18648 Humboldt head of Valley of South Yager Creek Valley of South Yager Creek 762 Comment
  HSC90650  Phyllospadix scouleri L. Watson, J. Meninga Sep 1991 43 Humboldt Arcata, Mad River Slough and dunes Comment
  HSC31649  Physocarpus capitatus Timothy B. Devine 1974-5-4 327 Humboldt Mad River floodplain 1 mi. from Blue Lake on Hatchery Rd. 305 Comment
  UC162338  Physocarpus capitatus Joseph P. Tracy 1911-7-7 3394 Humboldt 3 mi nw of junction of Willow Creek with Trinity River (near Beebe's Ranch, at the meadows on mountain side); Northern Coast Ranges 914 Comment
  SJSU2223  Picea sitchensis H. L. Buckalew 1959-7-10 Humboldt Prairie Creek Redwoods State Park, northweastern Humbollt County Comment
  LA6061  Pinus contorta H. E. Parks; May 1931 sn Humboldt Samoa Comment
  UC400255  Pinus contorta subsp. contorta P. E. Goddard 1901-8-1 Humboldt North Humboldt Bay Comment
  RSA384301  Pinus contorta var. contorta E. A. Purer 1932-7-27 4132 Humboldt Samoa, near Arcata. Comment
  HSC41287  Pinus lambertiana Brad Klipfel 1974-7-27 481 Humboldt Horse Mtn. Comment
  HSC55156  Pinus monticola Gilbert Muth 1979-8-1 12109 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1877 Comment
  UC502912  Pinus ponderosa Joseph P. Tracy 1929-4-28 8541 Humboldt Willow Creek Northern Coast Ranges, Trinity River Valley, Willow Creek 152 Comment
  UC4590  Piperia candida Harley P. Chandler Jun 1901 1385 Humboldt Hupa Indian Reservation North Coast Ranges 304 Comment
  UCD139013  Piperia elegans subsp. elegans Linda M. Barker 1976-7-5 1635 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  RSA722414  Piperia elongata J. R. Bruff 1937-8-17 942 Humboldt Richardson Grove. Comment
  UC1152007  Piptatherum miliaceum Joseph P. Tracy 1951-6-21 19518 Humboldt experimental grass garden of Albert H. Murphy Hydesville Comment
  HSC48719  Pityopus californicus M. A. Baker 1979-6-8 807 Humboldt S side of Gan's Prairie. Bulk Collection 166 Comment
  UC552843  Plagiobothrys hispidulus Joseph P. Tracy 1935-7-25 14226 Humboldt wet meadow at Corral Prairie Klamath Mountains, Trinity Summit 1524 Comment
  UC1222212  Plagiobothrys reticulatus Joseph P. Tracy 1951-6-24 19536 Humboldt Kneeland Prairie 762 Comment
  UC552842  Plagiobothrys reticulatus Joseph P. Tracy 1935-6-2 13923 Humboldt Big Lagoon 3 Comment
  UC526826  Plagiobothrys reticulatus Joseph P. Tracy 1927-7-10 8245 Humboldt Alton North Coast Ranges, Alton 60 Comment
  JEPS60982  Plagiobothrys reticulatus var. reticulatus Joseph P. Tracy 1909-5-2 2960 Humboldt Eureka Northern Coast Region 0 Comment
  OBI20599  Plagiobothrys scouleri Joseph P. Tracy 1949-6-25 18353 Humboldt Trinity summit, meadow at Box Camp Comment
  RSA178574  Plagiobothrys scouleri Joseph P. Tracy 1949-6-25 18353 Humboldt Trinity Summit; Meadow at Box Camp. 1463 Comment
  SEINET12275926  Plagiobothrys trachycarpus J. P. Tracy 1942-1 17355 Humboldt 1 mi NE of Garberville 305 Comment
  SEINET8665540  Plantago australis subsp. hirtella J. P. Tracy 1906-6-17 2493 Humboldt Immediate vicinity of Eureka Comment
  UCD124391  Plantago coronopus Stuart K. Harris 1930-10-14 6982 Humboldt near Palmer Creek, 1 mile west of Fortuna. 15 Comment
  HSC12426  Plantago lanceolata Gary J. Stebbins 1970-5-10 76 Humboldt Along Fickle Hill Rd., 2.4 mi. E of Arcata Comment
  HSC32428  Plantago lanceolata Linda M. Barker 1974-5-11 174 Humboldt Redwood National Park, Bald Hills Rd., Gans Prairie 549 Comment
  HSC62991  Plantago lanceolata David Wheeler 1979-4-23 83 Humboldt N end of Heindon Rd. at turn-around Comment
  UC585995  Plantago subnuda Joseph P. Tracy 1933-6-6 12499 Humboldt Trinidad 3 Comment
  HSC55142  Platanthera dilatata var. leucostachys G. L. Clifton, Griswold 1979-8-1 12029 Humboldt Near N Trinity Mtn., close to the town of Hoopa. 1798 Comment
  HSC96482  Platanthera dilatata var. leucostachys Gordon Leppig 1997-6-19 443 Humboldt Big Lagoon County Park, Big Lagoon Bog 3 Comment
  RSA382868  Platanthera leucostachys Brad W. Klipfel 1973-7-31 255 Humboldt Along ridge trail south east of North Trinity Mountain 1829 Comment
  HSC76612  Platanthera sparsiflora Teresa Prendusi 1981-7-9 177 Humboldt Near Cedar Camp. 1268 Comment
  UC666987  Platanthera sparsiflora Joseph P. Tracy 1932-7-17 10673 Humboldt ridges e Corral Prairie; Trinity Summit 1828 Comment
  CAS-BOT-BC91632  Platystemon californicus Alice Eastwood; John Thomas Howell 1937-6-22 4723 Humboldt Near Harris. Comment
  RSA256718  Platystemon californicus var. californicus John S. Palmer 1975-5-24 370 Humboldt Samoa Dunes; dunes off Samoa Blvd. across from the boat landing Comment
  UC602532  Plectritis brachystemon Joseph P. Tracy 1936-7-5 15037 Humboldt North Coast Range, Grouse Mountain Grouse Mountain; North Coast Range, Grouse Mountain 1524 Comment
  HSC45385  Pleuricospora fimbriolata R. York 1978-5-20 174 Humboldt Along Bluff Creek trail. 610 Comment
  SJSU16005  Pleuropogon refractus John Rawlings 2016-5-19 1802 Humboldt James Irvine Trail between the lower trailhead and the Fern Canyon turnoff, Prairie Creek Redwoods State Park 22 Comment
  UC1103800  Pleuropogon refractus Joseph P. Tracy 1905-4-2 2158 Humboldt 1 mi below Blue Lake (on Mad River); Northern Coast Ranges, Mad River 60 Comment
  SEINET10602042  Pleuropogon refractus Harley P. Chandler Chandler 1107 Humboldt Bay. 15 Comment
  UC1132594  Poa bulbosa H. L. Person 1932-5-11 Humboldt near Arcata; Eureka Quadrangle Comment
  HSC73055  Poa compressa M. A. Baker 1980-7-23 3139 Humboldt Near Orleans Mtn. 1859 Comment
  CAS-BOT-BC255119  Poa confinis Joseph P. Tracy 1927-4-24 7947 Humboldt Eureka, near bay shore 9 Comment
  HSC10687  Poa confinis T. O. Preston 1963-5-6 22 Humboldt Sand dunes. Comment
  SEINET11683183  Poa douglasii K. S. Erdman 1970-1 4801 Humboldt mouth of Ossagon Creek on Gold Beach Rd 2 mi W of US 101 (Redwood N.P.) Comment
  RSA152300  Poa macrantha Joseph P. Tracy 1917-5-30 4799 Humboldt Ocean Beach at mouth of Little River Comment
  RSA54930  Poa macrantha W. A. Silveus 1938-7-10 6912 Humboldt North of Eureka Comment
  CAS-BOT-BC255942  Poa pratensis Ashley C. Browne 1936-6-11 s.n. Humboldt Patrick's Point State Park Comment
  HSC75699  Poa pratensis Bill Copeland 1980-6-26 565 Humboldt Near Snow Camp Lake 1372 Comment
  UCD91934  Poa pratensis A. H. Murphy 1947-6-10 s.n. Humboldt Fulton's Ranch, Bald Mtn. ca. 7 miles east of Blue Lake. Comment
  HSC10379  Poa pringlei D. E. Anderson 1965-6-1 3765 Humboldt Horse Mountain. 1220 Comment
  HSC70687  Poa secunda subsp. secunda Gail Newton 1980-7-13 1572 Humboldt Near Sims Mountain. 1311 Comment
  SEINET201043 Image available Poaceae Joseph P. Tracy 1923-6-19 6302 Humboldt Wilder ridge. 762 Comment
  UC153997  Pogogyne serpylloides Joseph P. Tracy 1908-6-7 2622 Humboldt at Butter Valley on Mad River 152 Comment
  POM302977  Polygonum coccineum H. M. Pollard 1942-9-12 s.n. Humboldt Near Orleans. Comment
  UC1198076  Polygonum davisiae Joseph P. Tracy 1932-7-12 10482 Humboldt Brett Hole Trinity Summit (head) 1828 Comment
  UC672969  Polygonum davisiae Joseph P. Tracy Jul 16 1930-Jul 19 1930 9057 Humboldt along summit near Blake lookout; Northern Coast Ranges, South Fork Mountain 1706 Comment
  RSA167275  Polygonum douglasii subsp. austiniae Joseph P. Tracy 1947-8-24 17923 Humboldt On Box Camp trail, 1/2 mile W of summit. 1677 Comment
  UC1225796  Polygonum douglasii subsp. douglasii Joseph P. Tracy 1947-8-24 17922 Humboldt on Box Camp Trail Trinity Summit 1676 Comment
  CAS-BOT-BC418616  Polygonum majus Henry M. Pollard 1943-8-1 s.n. Humboldt Orleans Comment
  HSC55101  Polygonum minimum G. L. Clifton 1979-7-31 11832 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  CAS-BOT-BC109186  Polygonum paronychia Ira L. Wiggins 1930-7-11 4685 Humboldt Near Samoa. Comment
  RSA279504  Polygonum polystachyum Thomas W. Nelson 1978-10-10 4555 Humboldt Growing on Hwy 101 right of way just N of Humboldt State University exit, 1.5 miles. Comment
  UC1052469  Polygonum sachalinense H. E. and S. T. Parks July 1952 24448 Humboldt Hwy 10 s Elk River Bridge Comment
  HSC98684  Polygonum sawatchense subsp. sawatchense Cara Witte 2007-6-20 312 Humboldt Forest Service Road 4N32. 1 mile south of intersection with 4N32E. 1386 Comment
  RSA53825  Polygonum spergulariiforme H. M. Pollard 1945-8-25 s.n. Humboldt Between Orleans and Camp Creek, Klamath River Canyon. Comment
  CAS-BOT-BC71829  Polypodium californicum Joseph P. Tracy 1941-3-26 16835 Humboldt Trinity River Valley, at Willow Creek 152 Comment
  CAS-BOT-BC76875  Polypodium glycyrrhiza M. S. Jussel 1931-5-2 94 Humboldt Sylvandale, 8 miles N of Garverville. Comment
  SEINET200791 Image available Polypodium glycyrrhiza Joseph P. Tracy 1914-5-14 4429 Humboldt Fort Seward 122 Comment
  UC249780  Polypodium glycyrrhiza Joseph P. Tracy 1924-3-9 6614 Humboldt Kneeland Prairie; Northern Coast Ranges 762 Comment
  HSC28927  Polypodium glycyrrhiza Diane Johnson 1972-4-12 Humboldt Butler Valley near Big Bend Rd. Comment
  HSC78979  Polypodium glycyrrhiza L. P. Janeway 1984-12-5 1194 Humboldt N Spit of Humboldt Bay, W side Samoa Rd. near the boat ramp 5 Comment
  HSC26398  Polypodium scouleri T. O. Osborne 1970-9-16 33 Humboldt Trinidad Bay, Prisoner Rock Comment
  POM188096  Polypodium scouleri Marcus E. Jones 1931-7-12 29178 Humboldt Alton. Comment
  RSA689963  Polypodium scouleri May N. Ackley 1936-8-15 375 Humboldt Patrick s Point Comment
  CAS-BOT-BC233075  Polypogon interruptus Henry M. Pollard 1946-8-10 s.n. Humboldt Roadside, S of Klamath River and E of Perch Creek, Orleans region Comment
  UC204533  Polypogon maritimus Joseph P. Tracy 1918-7-1 4967 Humboldt along Eel River from South Fork to Scotia Holmes Flat; Northern Coast Ranges, along Eel River 60 Comment
  HSC38330  Polypogon monspeliensis P. D. Sorensen 1976-6-11 Humboldt King Salmon. Comment
  UC34074  Polypogon monspeliensis J. P. Tracy 1900-7-4 893 Humboldt sand hills of Ocean Beach at Samoa (opp. Eureka); Ocean Beach Comment
  HSC73633  Polystichum imbricans M. Baker 1980-7-23 3178 Humboldt Near Orleans Mtn. 1859 Comment
  HSC76296  Polystichum imbricans Michael Ericksen 1981-8-24 1094 Humboldt Near Pilot Creek 951 Comment
  CHSC31316  Polystichum munitum Mark Stopher 1980-6-4 86 Humboldt Along Elk River near Rte 101 bridge. 1 Comment
  HSC54599  Polystichum munitum Overton, Butler 1979-7-24 9679 Humboldt Near Friday Camp, close to the town of Willow Creek. 1250 Comment
  HSC89413  Polystichum munitum P. A. Daly 1986-3-12 73 Humboldt Trinidad Head, along trail 61 Comment
  RSA430497  Polystichum munitum Lyman Benson 1929-7-19 1660 Humboldt Mouth of Matole River. Comment
  HSC7226  Populus trichocarpa R. E. Thill 1965-4-24 18 Humboldt 100 yds. from Town & Country Trailer Park beside Mad River Comment
  UC249538  Populus trichocarpa Joseph P. Tracy 1922-10-8 6121 Humboldt Mad River at Blue Lake (Northern Coast Ranges); , Mad River at Blue Lake 30 Comment
  JEPS42963  Potamogeton amplifolius W. L. Jepson 1936-8-17 17933 Humboldt Mad River near Arcata; Mad River Comment
  HSC59076  Potamogeton natans Thomas Wood 1979-5-17 185 Humboldt Clam Beach Pond, E of Clam Beach-Little River Beach, along Hwy. 101 3 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
  UC1099821  Potamogeton pectinatus Malcolm A. Nobs, S. Galen Smith 1949-8-3 1162 a Humboldt 1 mi s of Fields Landing; Eel River Valley Comment
  UCD113697  Potentilla anserina subsp. pacifica D. C. Sumner 1957-4-1 s.n. Humboldt Near Fortuna. Comment
  HSC63880  Potentilla drummondii M. A. Baker 1979-6-27 922 Humboldt Edge of Hoopa Indian Reservation Comment
  HSC100633  Potentilla glandulosa Carl C. Marshall Jun 1887 447 Humboldt Spruce Grove. Comment
  HSC58182  Potentilla gracilis var. fastigiata G. L. Clifton, Griswold 1979-8-2 12270 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  UC279095  Potentilla gracilis var. gracilis H. E. Parks 1925-6-17 Humboldt Kneeland Comment
  CAS-BOT-BC158495  Potentilla gracilis var. gracilis Volney Rattan 1878-1-1 s.n. Humboldt Unspecified Comment
  UC303161  Potentilla palustris Joseph P. Tracy 1924-7-13 6727 Humboldt Big Lagoon; Northern Coast Region, Big Lagoon 6 Comment
  CAS-BOT-BC517512  Prosartes smithii Alice Eastwood 1907-4-22 29 Humboldt Part Trinidad Comment
  HSC49800  Prosartes smithii R. York 1979-4-9 214 Humboldt Behind HSU campus, by trail Comment
  HSC99296  Prunella vulgaris subsp. lanceolata Jimerson, J. Pageau 1979-8-10 721 Humboldt Near Tish ATang Ridge, close to the town of Hoopa 1464 Comment
  HSC23488  Prunella vulgaris subsp. lanceolata R. A. Vanbianchi 1971-9-24 87 Humboldt Comment
  HSC96503  Prunella vulgaris subsp. vulgaris Gordon Leppig 1998-8-23 1073 Humboldt Big Lagoon County Park, Big Lagoon Bog 3 Comment
  UC1196727  Prunella vulgaris var. lanceolata J. P. Tracy 1911-8-27 3533 Humboldt immediate vicinity Eureka 0 Comment
  UC1196728  Prunella vulgaris var. lanceolata J. P. Tracy 1900-7-22 903 Humboldt immediate vicinity Eureka 0 Comment
  POM283342  Prunella vulgaris var. lanceolata Lyman Benson 1928-7-10 443 Humboldt Rolling hills by Humboldt Bay, 4 mi. S Eureka 61 Comment
  UC1321006  Prunella vulgaris var. lanceolata Andrew P. Nelson 1960-7-19 627 Humboldt Eagle Point on Eel River (s of Meyer's Flat) Comment
  UC1196729  Prunella vulgaris var. vulgaris Joseph P. Tracy 1925-11-8 7307 Humboldt near Blue Lake (along Mad River); , near Blue Lake 15 Comment
  CAS-BOT-BC158598  Prunus C. Hart Merriam 1921-7-7 s.n. Humboldt Ridge west of the Van Duzen River Comment
  CDA3914  Prunus laurocerasus Gordon Leppig 2000-4-12 1291 Humboldt Behind Humboldt University, west of Fern Lake, Arcata. Comment
  UC666841  Prunus virginiana var. demissa Joseph P. Tracy 1940-5-17 16555 Humboldt Buck Mountain 762 Comment
  HSC40261  Pseudognaphalium ramosissimum Linda M. Barker 1976-8-2 1678 Humboldt Lanphere- Christensen Dunes, 3 mi. W of Arcata Comment
  HSC90233  Pseudognaphalium ramosissimum Louise Watson, Jan Meninga Aug 1990 5 Humboldt Mad River Slough and Dunes. Co-operative management area Comment
  HSC95588  Pseudognaphalium stramineum Andrea Pickart 2002-7-3 162 Humboldt Lanphere Dunes: Big Dune, Lanphere Dunes Unit, Humboldt Bay National Wildlife Refuge 0 Comment
  CAS-BOT-BC357600  Pseudognaphalium stramineum Henry M. Pollard 1946-8-22 s.n. Humboldt Ullathorne Riffle, Klamath River, Orleans region Comment
  UC1173655  Pseudognaphalium thermale Joseph P. Tracy 1939-8-16 16424 Humboldt Friday Ridge Grouse Mountain, Friday Ridge (brushy slopes) 1219 Comment
  HSC102507  Pseudotsuga menziesii M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-28 1492 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1106 Comment
  HSC55105  Pseudotsuga menziesii var. menziesii G. L. Clifton 1979-7-31 11847 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  UC902028  Pseudotsuga menziesii var. menziesii Joseph P. Tracy 1949-10-8 18584 Humboldt Trinity River Valley at Willow Creek Trinity River Valley, Willow Creek 152 Comment
  HSC32927  Psilocarphus oregonus Thomas W. Nelson, James Nelson 1973-5-28 970 Humboldt McKeown Ranch N of Dinsmore Comment
  HSC55176  Pteridium aquilinum var. pubescens Gilbert Muth 1979-8-1 12178 Humboldt Near Red Cap Prairie, close to the town of Hoopa 1780 Comment
  HSC76322  Pteridium aquilinum var. pubescens Denis Kearns 1981-7-24 446 Humboldt Near Whiteys Peak. 1768 Comment
  HSC36260  Pteridium aquilinum var. pubescens John Rehling 1974-8-19 20 Humboldt Comment
  HSC100917  Pteris aquilina Carl C. Marshall Jun 1887 480 Humboldt Everywhere. Comment
  JEPS19284  Pycnanthemum californicum Joseph P. Tracy 1931-9-7 9637 Humboldt Trinity River Valley at Willow Creek; Trinity River Valley at Willow Creek 152 Comment
  CAS-BOT-BC460604  Pyrola aphylla Doris K. Kildale 1927-7-3 3632 Humboldt Willow Creek Flat 152 Comment
  CAS-BOT-BC462870  Pyrola asarifolia Doris K. Kildale 1927-7-10 3730 Humboldt Gans Prairie, Bald Hills Comment
  HSC98084  Pyrola dentata Cara Witte 2007-7-10 474 Humboldt Horse Mountain Botanical Area. Forest service Road 6N36A. 1334 Comment
  UC153965  Pyrola picta Joseph P. Tracy 1909-7-31 3047 Humboldt Kneeland Prairie 762 Comment
  CAS-BOT-BC62671  Quercus chrysolepis Doris K. Kildale 1926-9-5 2646 Humboldt Signal Peak - Lassiks Peaks 1791 Comment
  HSC99510  Quercus chrysolepis K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-22 172 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
  UC1196528  Quercus chrysolepis Joseph P. Tracy 1926-6-6 7570 Humboldt on road w from Hoopa Valley; Northern Coast Ranges, Hoopa Mountain 914 Comment
  UC203862  Quercus chrysolepis Joseph P. Tracy 1918-9-29 5109 Humboldt 4 mi above mouth of South Fork Eel River; North Coast Ranges, South Fork Eel River 60 Comment
  CAS-BOT-BC94309  Quercus garryana Henry M. Pollard 1944-9-1 s.n. Humboldt near Orleans Comment
  HSC73544  Quercus garryana Gail Newton 1980-7-14 1469 Humboldt Near Last Chance Ridge. 1219 Comment
  UC1193247  Quercus garryana P. Zinke 190 Humboldt 5 mi se Punta Enda; Lake Ridge at the Lake 579 Comment
  UC1193248  Quercus garryana K. Cuff 1950-10-10 127 Humboldt 1.5 mi n Honeydew 152 Comment
  HSC55093  Quercus garryana var. breweri G. L. Clifton, Griswold 1979-7-31 11796 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa. 1845 Comment
  HSC68607  Quercus kelloggii Jacqueline Greenleaf 1980-8-12 329 Humboldt Near Becker Cabin. 1143 Comment
  UC1196357  Quercus kelloggii Joseph P. Tracy 1940-10-15 16780 Humboldt Willow Creek Trinity River Valley 152 Comment
  UC275512  Quercus kelloggii Joseph P. Tracy 1923-9-10 6543 Humboldt near The South Fork; Northern Coast Ranges, Trinity River Valley 182 Comment
  UC667984  Quercus kelloggii Joseph P. Tracy 1938-11-26 16176 Humboldt between Miranda and Garberville (at Sylvandale); South Fork of Eel River, Sylvandale 91 Comment
  HSC55279  Quercus vacciniifolia Overton, Butler 1979-8-2 12695 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  HSC72811  Quercus vacciniifolia Gail Newton 1980-7-22 1686 Humboldt Near Devils Backbone 1554 Comment
  HSC8296  Quercus vacciniifolia C. B. Wolf 1927-8-28 1173 Humboldt On the grade 9 mi. from Willow Creek, Lord Ellis Rd. to Blue Lake Comment
  UC1196529  Quercus vacciniifolia Joseph P. Tracy 1949-8-26 18526 1/2 Humboldt 2 mi e Grove's Prairie; North Coast Ranges, Trinity Summit 1524 Comment
  UC1196538  Quercus vacciniifolia Joseph P. Tracy 1934-6-27 11044 Humboldt Horse Mountain Northern Coast Ranges 1524 Comment
  UC1196539  Quercus vacciniifolia Joseph P. Tracy 1932-7-18 10721 Humboldt Head of Brett Hole Klamath Mountains, Trinity Summit 1828 Comment
  UC2016503  Quercus vacciniifolia A. R. Kruckeberg 1965-9-11 5867 Humboldt On broad flat summit just s. of Horse Mtn., ca. 7 mi. s. of Hiway 299. Comment
  UC275513  Quercus wislizeni Joseph P. Tracy 1923-10-14 6576 Humboldt North Dobbyn Creek Northern Coast Ranges 152 Comment
  UC1103018  Ranunculus arvensis Joseph P. Tracy 1940-5-17 16554 Humboldt Buck Mountain; lower foothills of nw slope 762 Comment
Read comments
Jun 18 2011
  HSC90768  Ranunculus flammula var. ovalis Gail Newton 1982-5-31 3566 Humboldt Elk River Wildlife Area, Eureka Comment
  HSC41655  Ranunculus flammula var. ovalis J. O. Sawyer 1977-4-25 3043 Humboldt N side of Buttermilk Lane in Sunny Brae across from house 1425 Comment
  HSC26638  Ranunculus lobbii Thomas W. Nelson 1971-5-31 447 Humboldt Vernal pond Comment
  UCD96220  Ranunculus muricatus Linda M. Barker 1976-4-30 1404 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  HSC70255  Ranunculus occidentalis M. A. Baker 1980-6-8 1922 Humboldt Near Buck Flat. 1554 Comment
  UC1196225  Ranunculus occidentalis Joseph P. Tracy 1921-4-24 5453 Humboldt Phillipsville Flat Northern Coast Ranges, South Fork of Eel River 91 Comment
  UC1196224  Ranunculus occidentalis Joseph P. Tracy 1920-5-18 5327 Humboldt 5 mi above Dyerville; Northern Coast Ranges, South Fork Eel River, Forest Lodge 60 Comment
  UC1196234  Ranunculus occidentalis Joseph P. Tracy 1914-5-3 4417 Humboldt corner Harris St. and Broadway (top of Bluff); Northern Coast Region, Eureka 0 Comment
  UC1196235  Ranunculus occidentalis Joseph P. Tracy 1902-6-3 1671 Humboldt ridge between Harris and Fruitland; Northern Coast Ranges 762 Comment
  HSC18163  Ranunculus occidentalis var. occidentalis E. W. Styskel 1963-5-19 36 Humboldt 3 mi. SE of Korbel, on Snow Camp Rd. 290 Comment
  POM269707  Ranunculus orthorhynchus var. platyphyllus W. R. Dudley 1899-1 s.n. Humboldt Arcata Comment
  UC1042328  Ranunculus parviflorus John Thomas Howell 1954-4-25 29153 Humboldt Arcata Comment
  UC1191438  Ranunculus repens Malcolm A. Nobs and S. Galen Smith 1949-8-3 1184 Humboldt Eureka; marsh and bog land at southern outskirts Comment
  UCD97080  Ranunculus repens Linda M. Barker 1976-6-1 1555 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  HSC39445  Ranunculus repens var. repens Linda M. Barker 1976-6-1 1555 Humboldt 3 mi. W of Arcata Comment
  HSC29783  Ranunculus repens var. repens Thomas W. Nelson 1970-6-11 602 Humboldt Adjacent to 4244 Fairway Dr., Eureka Comment
  HSC36258  Ranunculus repens var. repens John Rehling 1974-8-19 18 Humboldt Comment
  HSC55324  Ranunculus uncinatus Griswold, Butler 1979-7-12 7143 Humboldt Near Groves Prairie, close to the town of Willow Creek. 1256 Comment
  HSC56212  Ranunculus uncinatus G. L. Clifton, Griswold 1979-8-2 12220 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  HSC64070  Raphanus sativus J. P. Smith 1971-10-6 4965 Humboldt End of Murray Rd. in McKinleyville. Comment
  RSA245205  Raphanus sativus Thomas W. Nelson 1971-4-12 374 Humboldt At the junction of the Hookton Rd and Copenhagen Rd. Comment
  RSA7735  Rhamnus californica subsp. occidentalis Carl B. Wolf 1927-8-28 1172 Humboldt On grade 9 miles from Willow Creek, Lord Ellis Road to Blue Lake Comment
  RSA7737  Rhamnus californica subsp. occidentalis Doris K. Kildale 1928-10-7 6748 Humboldt Willow Creek Canyon, 7 miles W of Trinity River Comment
  POM319213  Rhamnus purshiana Patricia Wilder 1968-8-21 4386 Humboldt Bog in Big Lagoon Park, just west of Hwy 101; Mt. Range: Coast range; Drainage Area: Big Lagoon to Pacific Ocean. 2 Comment
  UC177180  Rhamnus purshiana Joseph P. Tracy 1913-6-13 4108 Humboldt opposite Buck Mountain (Dinsmore's Ranch); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  UC199231  Rhamnus purshiana V. King Chesnut Jul 1888 Humboldt Mad River Comment
  UC630478  Rhamnus purshiana H. E. and S. T. Parks Jun 1937 24018 Humboldt Spruce Cove Trinidad Comment
  UC153961  Rhododendron macrophyllum Joseph P. Tracy 1906-6-10 2489 Humboldt Humboldt Bay Region, Kneeland Prairie Road Kneeland Prairie Road; Northern Coast Region, Humboldt Bay Region, Kneeland Prairie 609 Comment
  UC725903  Rhododendron macrophyllum A. A. Heller 1937-6-8 15898 Humboldt 3 mi n of Trinidad (at Bishop Pine Lodge); Bishop Pine Lodge Comment
  UC162760  Rhododendron occidentale Joseph P. Tracy 1911-7-6 3340 Humboldt between Three Creeks and mouth of Willow Creek; Northern Coast Ranges 762 Comment
  UC1733675  Rhododendron occidentale Frank Gould, Kay H. Beach 1940-5-5 1041 Humboldt along north coast, north of Eureka. Comment
  UC183661  Rhododendron occidentale Joseph P. Tracy 1913-9-7 4389 Humboldt at Eureka Eureka; Northern Coast Region, Eureka 0 Comment
  UC275301  Rhododendron occidentale R. M. Holman 1925-7-23 Humboldt Big Lagoon Comment
  CAS-BOT-BC200379  Rhododendron occidentale var. paludosum Henry M. Pollard 1948-8-9 s.n. Humboldt Camp Creek, near Orleans Comment
  HSC7883  Rhododendron occidentale var. paludosum J. Pursell 1964-10-6 1062 Humboldt Big Lagoon Bog Comment
  HSC7892  Rhododendron occidentale var. paludosum Francis Winter 1960-5-6 Humboldt Across from Azalea State Park Entrance Comment
  HSC100495  Ribes Carl C. Marshall Apr 1887 395 Humboldt Hoopa Valley. Comment
  CAS-BOT-BC433136  Ribes Doris K. Kildale; L. B. Kildale 1930-5-5 9555 Humboldt Bug Creek, Chaparral Mt. Comment
  CAS-BOT-BC92877  Ribes bracteosum Joseph P. Tracy 1938-8-14 16105 Humboldt Willow Creek Canyon, along Trinity Highway. 762 Comment
  UC70552  Ribes bracteosum J. Burtt Davy 1899-6-23 5761 Humboldt near Box Camp; North Coast Ranges, Trinity Summit Comment
  HSC103234  Ribes lacustre Jade Paget-Seekins 2010-6-26 29 Humboldt On Long Ridge Road, up Big Hill Road outside of Hoopa. 1274 Comment
  HSC99025  Ribes lacustre Cara Witte 2008-7-1 781 Humboldt Spike Buck Mountain. Forest Service Road 5N18. Near intersection with National Forest 1. 1462 Comment
  RSA0021131  Ribes lobbii Peter H. Raven, Richard Snow 1958-7-20 13632 Humboldt 12.8 miles southwest of US 299 on Friday Ridge Road to Grouse Mountain, 0.2 miles northeast of Titlow Hill Road junction. Comment
  RSA84966  Ribes marshallii Joseph P. Tracy 1932-7-15 10592 Humboldt Ridges east of Corral Prairie; Trinity Summit Comment
  UC1541331  Ribes menziesii Harold E. Parks April 1933 4402 Humboldt vicinity Trinidad (type locality) Comment
  RSA0021774  Ribes menziesii L. R. Abrams, R. C. Bacigalupi 1922-6-25 8289 Humboldt Bluffs north of Big Lagoon near Orick. Comment
  HSC103114  Ribes nevadense M. Mesler, Jen Kalt 2010-8-6 839 Humboldt Trail to Trinity Summit from Water Dog Lakes (6E08, Horse Ridge National Recreation Trail) 1833 Comment
  CAS-BOT-BC198905  Ribes roezlii var. cruentum D. H. Norris 1970-5-20 12217 Humboldt Crest of ridge on Big Hill Road east of Hoppa at streambed. Comment
  CAS-BOT-BC211977  Ribes sanguineum Joseph P. Tracy 1949-8-11 18450 Humboldt Hungry Hollow, Bald Mountain 762 Comment
  HSC100494  Ribes sanguineum Carl C. Marshall Apr 1885 135 Humboldt Near the coast everywhere. Comment
  HSC28504  Ribes sanguineum J. D. Ackerman 1973-3-27 40 Humboldt 1.5 mi. N of Manila Comment
  UC1198913  Ribes sanguineum Joseph P. Tracy 1928-4-22 8411 Humboldt Willow Creek Canyon Northern Coast Ranges 762 Comment
  RSA0019529  Ribes sanguineum D. E. Anderson 1964-4-24 3540 Humboldt About 0.5 mile from junction 299 along Titlow Hill Road. Comment
  HSC90232  Ribes sanguineum var. glutinosum L. Watson, J. Meninga Mar 1991 9 Humboldt Near Manilla, Mad River Slough and Dunes, 300yds W of parking lot, W of trail Comment
  UC1215537  Ribes sanguineum var. glutinosum D. E. Anderson 1962-1-12 1907 Humboldt along road to Lanphere Ranch Comment
  HSC100719  Ribes viscosissimum Carl C. Marshall Jun 1886 325 Humboldt Trinity Summit. Comment
  UC176486  Rigiopappus leptocladus Joseph P. Tracy Jul 27 1908-Jul 30 1908 2686 Humboldt opposite Buck Mountain; Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  RSA168871  Rigiopappus leptocladus Joseph P. Tracy 1950-7-6 18996 Humboldt Two miles south of Burr Valley on the Albee Road. 1159 Comment
  JEPS1245  Romanzoffia californica Joseph P. Tracy 1924-4-27 6645 Humboldt Willow Creek Canyon Northern Coast Ranges, Willow Creek Canyon 457 Comment
  BLMAR82  Romanzoffia californica Jennifer Anthony-Wheeler 1994-6-2 82 Humboldt IAQUA, growing on moist, rocky cliff on logging rd 3/4mi off pvd rd 822 Comment
  HSC26449  Romanzoffia tracyi T. O. Osborne 1970-4-8 9 Humboldt Sugarloaf Rock, Cape Mendocino 76 Comment
  UC906641  Romanzoffia tracyi Harold E. Parks and Joseph P. Tracy 1946-4-21 11628 Humboldt 2 mi n of Trinidad 15 Comment
  CHSC19514  Rorippa nasturtium-aquaticum J. F. Knezevich 1968-5-14 433 Humboldt Collected 13 miles south of Ferndale at Cape Mendocino. -15 Comment
  UC14385  Rorippa nasturtium-aquaticum Chestnut and Drew 1888-7-8 Humboldt Arcata Comment
  SD88394  Rorippa nasturtium-aquaticum Darley F. Howe 1972-5-6 Humboldt 1.5 miles north of Phillipsville. Comment
  CAS-BOT-BC146483  Rosa gymnocarpa W. R. Dudley 1899-6-1 s.n. Humboldt Shady run - Scotia Comment
  JEPS45670  Rosa gymnocarpa Joseph P. Tracy 1923-5-31 6241 Humboldt Eureka Northern Coast Ranges 0 Comment
  UC667030  Rosa gymnocarpa Joseph P. Tracy 1936-8-7 15107 Humboldt 2 mi se Devil's Hole; Trinity Summit 1584 Comment
  UC914721  Rosa gymnocarpa Ira L. Wiggins 1930-7-22 4695 Humboldt along bank of creek between Blue Lake and Willow Creek; Redwood Creek Comment
  CAS-BOT-BC146836  Rosa nutkana H. E. Parks; S. T. Parks 1937-5-1 5816 Humboldt Spruce Cove, Trinidad 60 Comment
  UC667044  Rosa nutkana var. nutkana Joseph P. Tracy 1936-6-21 14993 Humboldt Iaqua 609 Comment
  UC902162  Rosa nutkana var. nutkana Joseph P. Tracy 1947-8-10 17883 Humboldt 2 mi s of town Field's Landing 6 Comment
  UC902163  Rosa nutkana var. nutkana Joseph P. Tracy 1942-6-15 17131 Humboldt near Redcrest resort; Englewood 91 Comment
  CHSC31292  Rosa pinetorum Mark Stopher 1980-7-11 115 Humboldt Along Elk River near Hwy 101 bridge. 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
  RSA21585  Rosa spithamea Carl B. Wolf 1937-8-13 9230 Humboldt North coast range, 8 mi. east of Hoopa Valley on new road towards Trinity summit. 1220 Comment
  UC1199040  Rosa spithamea Joseph P. Tracy 1929-7-4 8620 Humboldt French Camp Ridge Northern Coast Ranges 1066 Comment
  CAS-BOT-BC148354  Rubus lasiococcus Joseph P. Tracy 1930-7-17 9021 Humboldt South Fork Mountain, near McKay Camp 1676 Comment
  HSC73352  Rubus leucodermis M. A. Baker 1980-6-7 1861 Humboldt Near Ammon Creek 732 Comment
  HSC77922  Rubus parviflorus L. P. Janeway, Paul Wilson 1984-5-7 768 Humboldt Near Coast Guard Station, N Spit of Humboldt Bay 3 Comment
  CHSC57509  Rubus spectabilis Eric Hartwell 1983-3-30 2 Humboldt Ca. 0.25 mi e of jct. of Jocoby Creek Rd. and Sonnenfelt Rd. 97 Comment
  HSC22039  Rubus spectabilis B. D. Rogers, D. E. Anderson 1965-4-1 412 Humboldt 4 mi. SE of Arcata along Jacoby Creek Comment
  HSC60111  Rubus spectabilis M. A. Baker 1977-5-1 278 Humboldt E of Humboldt State University. Comment
  SEINET3111191  Rubus spectabilis Steve Selva, Roger Jensen 1974-8-21 27 Humboldt Approx 3 miles N of Trinidad; redwood grove adjacent to Hwy 101 rest stop. Comment
  UC1301223  Rubus spectabilis Paul C. Hutchison 1966-5-26 2741 Humboldt near U.S. highway 101 (Prairie Creek Redwood Grove State Park); Prairie Creek Redwood Grove State Park 50 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
  HSC19694  Rubus ursinus Lincoln Constance 1934-5-29 727 Humboldt Upper Look Prairie; South Fork Eel River 366 Comment
  HSC55306  Rubus ursinus Griswold, Butler 1979-7-11 6907 Humboldt Near Snow Camp Mtn., close to the town of Willow Creek. 1320 Comment
  HSC79483  Rubus ursinus Kenneth Clark 1980-3-24 547 Humboldt Shelter Cove, N fork of Deadman's Gulch 69 Comment
  HSC99000  Rubus ursinus subsp. ursinus Cara Witte 2008-7-16 906 Humboldt Board Camp Mountain. Forest Service Road 4N38. 1/2 mile south of intersection with National Forest 1. 1409 Comment
  HSC58183  Rudbeckia klamathensis G. L. Clifton, Griswold 1979-8-2 12271 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  SEINET5710897  Rudbeckia occidentalis Lowell E. Urbatsch 1990-1 6799 Humboldt From Calif. 99 at Hawkins Bar (in Trinity County), turn onto the road to Denny and travel 1.7 miles down this road to a fork; take the left fork (not leading to Denny but to Waterman Ridge and Zeigler Point) and travel 6.7 miles down this road to another fork. Take the rt. fork (away from the rd. leading to Waterman Ridge and Willow Creek). On this rd. (FD 7 NO4) travel 1.5 miles to another fork; continue on 7No4N (the left fork) for 7.4 miles. At this point, take 7NO4N, the rd to Groves Prairie. The collection site is about 50m to the right near the Groves Prairie Creek sign. The site is 17.9 miles from Hawkins Bar just beyond mile marker 9.; Groves Prairie Comment
  HSC17569  Rumex acetosella D. B. Bader 1963-3-1 37 Humboldt Second of the Clam Beach Lagoons, W of Hwy. 101. Comment
  HSC17582  Rumex acetosella F. Morrell 1949-5-14 23 Humboldt Hoopa Comment
  HSC17583  Rumex acetosella J. E. Lankila 1962-5-14 28 Humboldt W bank of river at Fernbridge Comment
  HSC37937  Rumex acetosella Peter Sorensen 1976-5-28 Humboldt N Spit of Humboldt Bay, S of Samoa Comment
  HSC102195  Rumex californicus M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-4 1109 Humboldt Andy's Camp 1564 Comment
  UC55521  Rumex obtusifolius Joseph Burtt Davy 1899-7-30 6169 B Humboldt near Ferndale Comment
  HSC31482  Rumex salicifolius R. F. Thorne, P. Everett 1965-8-9 35311 Humboldt Big Lagoon 3 Comment
  UC1541397  Rumex salicifolius var. salicifolius Harold E. Parks 1934-8 5166 Humboldt Big Lagoon Comment
  UC161047  Sagina decumbens subsp. occidentalis Joseph P. Tracy 1905-5-2 2181 Humboldt at Eureka Northern Coast Region, Eureka 0 Comment
  UCD98453  Sagina maxima subsp. crassicaulis Joseph P. Tracy 1947-9-1 17927 Humboldt Big Lagoon. 6 Comment
  HSC49825  Salicornia depressa R. York 1979-5-18 299 Humboldt From area around Humboldt Bay. Comment
  HSC89899  Salicornia depressa Leonel Arguello 1989-9-9 Humboldt Lanphere-Christensen Dunes Preserve, 3 mi. W of Arcata Comment
  CAS-BOT-BC132668  Salix A. T. Whittemore 1980-3-15 80 -002 Humboldt Arcata, in residential area, along Alliance Road from Foster Ave. to the railroad tracks Comment
  CAS-BOT-BC129889  Salix bonplandiana Mrs. H. P. Bracelin 1931-5-1 271 Humboldt Sylvandale, between Miranda and Meyers, South Fork of Eel River Comment
  CAS-BOT-BC129890  Salix bonplandiana W. R. Dudley 1899-6-21 s.n. Humboldt Junction of north and south Fork of Eel River Comment
  CAS-BOT-BC103813  Salix exigua John H. Thomas 1966-3-19 11483 Humboldt Near Westhaven Drive and highway 101, Trinidad 60 Comment
  HSC99700  Salix exigua Glenn W. K. Shelton 2010-7-10 30 Humboldt Van Duzen River along State Rte. 36, 2 mi. W of Grizzly Creek Redwoods State Park, across from mile marker 15.00 91 Comment
  LA208631  Salix exigua var. hindsiana Harold E. Parks; 1931-8-25 1061 Humboldt Blue Slide, Van Duzen River 90.0 Comment
  SBBG58938  Salix exigua var. hindsiana H. E. Parks 1931-8-25 1061 Humboldt Blue Slide, Vanduzen River 90 Comment
  UC1173615  Salix exigua var. hindsiana Joseph P. Tracy 1935-5-30 13912 Humboldt at Willow Creek Trinity R. Valley 152 Comment
  UC490574  Salix exigua var. hindsiana Joseph P. Tracy 1932-7-31 10289 Humboldt along Eel R. from S. Fork to Scotia (mouth of Larrabee Creek); Northern Coast Ranges 60 Comment
  CAS-BOT-BC104110  Salix hindsiana Carleton R. Ball; Harold E. Parks; Joseph P. Tracy 1932-5-17 01332 Humboldt channel of Trinity River, near bridge on Trinity Highway 152 Comment
  CAS-BOT-BC106856  Salix hookeriana Harold E. Parks 1931-8-1 01053 Humboldt Little River Lagoon Comment
  CAS-BOT-BC107725  Salix hookeriana C. V. Piper 1921-5-22 s.n. Humboldt Eureka Comment
  HSC40870  Salix hookeriana Linda M. Barker 1976-4-13 1383 Humboldt Lanphere-Christensen Dunes, 3 mi. W of Arcata Comment
  HSC60288  Salix hookeriana Phyllis Krieg 1979-4-21 Humboldt Clam Beach Lagoon, E of Hwy. 101 0 Comment
  HSC90399  Salix hookeriana Jean Hanson 1980-3-8 9 Humboldt Indian (Gunther) Island, Humboldt Bay, Eureka, W end of island Comment
  JEPS73316  Salix hookeriana Annetta M. Carter 1934-8-17 721 Humboldt 35 mi n Eureka (e shore of Big Lagoon) Comment
  POM160840  Salix hookeriana Joseph P. Tracy 1925-10-11 7280 Humboldt Near Loren Frost place, on Kneeland Road. Near Kneeland Prairie. 610 Comment
  POM167518  Salix hookeriana Joseph P. Tracy 1918-4-7 4863 Humboldt Dows Prairie Sand Dunes. At mouth of Strawberry Creek. 6 Comment
  RSA34314  Salix hookeriana C. Kistner 1935-5-10 s.n. Humboldt Samoa. Comment
  SBBG59112  Salix hookeriana H. E. Parks, S. T. Parks 1932-4-7 1103 Humboldt Little River Lagoon Comment
  SD939  Salix hookeriana Harold E. Parks August 1931 1053 Humboldt Little River Lagoon Comment
  UC275497  Salix hookeriana Joseph P. Tracy 1925-4-5 6951 Humboldt near Kneeland Prairie (near Loren Frost place on Kneeland Rd.); Northern Coast Ranges 609 Comment
  UC275500  Salix hookeriana Joseph P. Tracy 1925-2-1 6930 Humboldt lowlands near Salmon Creek Corners (around Humboldt Bay); Northern Coast Region, Humboldt Bay 6 Comment
  UC429548  Salix hookeriana Joseph P. Tracy 1904-7-17 2124 C Humboldt near Hydesville Hydesville; Northern Coast Region 60 Comment
  UC469120  Salix hookeriana Joseph P. Tracy 1927-4-23 7922 Humboldt Big Lagoon Northern Coast Ranges 6 Comment
  UC490457  Salix hookeriana Joseph P. Tracy 1932-5-10 9953 Humboldt Mattole R. near Petrolia; North Coast Region, Mattole R. 15 Comment
  UC492337  Salix hookeriana Harold E. and Susan T. Parks 1932-4-7 1103 Humboldt Little River Lagoon Trinidad (<place> from which No. 01000...was taken) Comment
  UC506346  Salix hookeriana Joseph P. Tracy 1933-3-19 10925 Humboldt on Van Duzen R. Blue Slide; Northern Coast Ranges, Van Duzen R. 91 Comment
  UC512086  Salix hookeriana Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-11 1221 Humboldt 1 mi n Samoa (in pine barrens near the coast) Comment
  UC519325  Salix hookeriana Joseph P. Tracy 1933-10-8 13089 Humboldt on Van Duzen R. Blue Slide; Northern Coast Ranges 91 Comment
  CDA39525  Salix hookeriana Patty Adams Jun 1985 s.n. Humboldt Dry Lagoon State Park. 0 Comment
  UC1173614  Salix laevigata Joseph P. Tracy 1935-6-22 13960 Humboldt mouth of Larrabee Creek (on Eel River); Eel River 45 Comment
  UC490521  Salix laevigata Joseph P. Tracy 1932-4-23 9834 Humboldt 4 mi. s. Dyerville (S. Fork Eel R.); Northern Coast Ranges, S. Fork Eel R. 60 Comment
  UC906710  Salix laevigata Harold E. Parks and Joseph P. Tracy 1942-5-16 11568 Humboldt vicinity of Garberville Garberville 152 Comment
  HSC19989  Salix lasiandra H. E. Parks, S. T. Parks 1932-4-5 1101 Humboldt Little River Lagoon Comment
  UC490525  Salix lasiandra subsp. lasiandra Joseph P. Tracy 1932-4-17 9796 Humboldt Alton to Fortuna; Northern Coast Region 15 Comment
  UC504056  Salix lasiandra subsp. lasiandra Jim Davis Apr 25 1933-Apr 27 1933 3 Humboldt around Eureka Eureka Comment
  CAS-BOT-BC107577  Salix lasiolepis Joseph P. Tracy 1934-3-25 13167 Humboldt Blue Slide, on Van Duzen River 91 Comment
  CAS-BOT-BC107598  Salix lasiolepis Joseph P. Tracy 1933-4-2 10959 Humboldt On slope of Berry's Mountain, on Trinity Highway, east of Redwood Creek 762 Comment
  CAS-BOT-BC107619  Salix lasiolepis Doris K. Kildale 1927-3-22 2934 Humboldt Samoa Peninsula Comment
  HSC20017  Salix lasiolepis J. P. Tracy 1933-4-9 10968 Humboldt Bridgeville, along Van Duzen River 229 Comment
  HSC55635  Salix lasiolepis Overton, Butler 1979-7-24 9655 Humboldt Near Titlow Hill, close to the town of Willow Creek 1250 Comment
  JEPS12924  Salix lasiolepis H. E. Parks and Joseph P. Tracy 1933-3-19 11007 Humboldt 2 mi w Bridgeville (near Big Rock); Northern Coast Ranges 182 Comment
  JEPS14779  Salix lasiolepis Joseph P. Tracy 1933-4-2 10959 Humboldt on Trinity Hwy. Berry's Mt. (e of Redwood Creek); Northern Coast Ranges 762 Comment
  LA208773  Salix lasiolepis Carleton R. Ball; Harold E. Parks, Joseph P. Tracy 1932-5-12 1239 Humboldt Van Duzen River at Blue Slide 91 Comment
  UC469407  Salix lasiolepis Joseph P. Tracy 1927-3-27 7868 Humboldt at Berry's Redwood Creek; Northern Coast Ranges, Redwood Creek 274 Comment
  UC469428  Salix lasiolepis Joseph P. Tracy 1931-9-7 9629 Humboldt at Willow Creek Trinity R. Valley; Northern Coast Ranges, Trinity R. Valley 152 Comment
  UC481291  Salix lasiolepis Harold E. Parks 1931-5-14 963 Humboldt between Alton and Carlotta; Van Duzen River 15 Comment
  UC504020  Salix lasiolepis Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-13 1254 Humboldt 2 mi E of Redwood Highway ( Mad River at Engelhart gravel pit, above Blue Lake) Comment
  UC506373  Salix lasiolepis Joseph P. Tracy 1933-4-9 10965 Humboldt Bridgeville 228 Comment
  UC506392  Salix lasiolepis Joseph P. Tracy 1932-6-4 10126 Humboldt Bridgeville Northern Coast Ranges 228 Comment
  UC511994  Salix lasiolepis Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-12 1239 Humboldt Blue Slide Van Duzen River 91 Comment
  CDA39554  Salix lasiolepis Gordon Leppig 1999-4-15 1118 Humboldt Big Lagoon County Park; Big Lagoon Bog. Comment
  CAS-BOT-BC107301  Salix lasiolepis var. bigelovii Doris K. Kildale 1926-8-8 2477 Humboldt South Fork of Eel River near Dyerville bridge 51 Comment
  CAS-BOT-BC107414  Salix lasiolepis var. lasiolepis Henry M. Pollard 1945-9-4 s.n. Humboldt near Camp Creek, Klamath River Canyon Comment
  UC279091  Salix lemmonii J. P. Tracy Humboldt Comment
  CAS-BOT-BC125633  Salix melanopsis Harold E. Parks 1931-10-15 01077 Humboldt Bishop Pine Lodge, Trinidad 75 Comment
  CAS-BOT-BC125640  Salix melanopsis Harold E. Parks; Joseph P. Tracy 1931-5-17 0972 Humboldt Mouth of Willow Creek at Trinity River 150 Comment
  JEPS12935  Salix melanopsis Joseph P. Tracy 1931-5-3 9348 Humboldt Mad River near Blue Lake; Northern Coast Region 15 Comment
  JEPS38370  Salix melanopsis W. L. Jepson 1902-6 2121 Humboldt Supply Creek Hupa Valley 243 Comment
  UC1196566  Salix melanopsis Joseph P. Tracy 1932-5-1 9846 Humboldt along Van Duzen R. Alton; North Coast Ranges, Van Duzen R. 30 Comment
  UC1196573  Salix melanopsis Joseph P. Tracy 1931-10-3 9703 Humboldt on Van Duzen R. Blue Slide; Northern Coast Ranges, Van Duzen R., Blue Slide 91 Comment
  UC14800  Salix melanopsis Hy-An Pum 1888-7-21 Humboldt Comment
  UC470457  Salix melanopsis Joseph P. Tracy 1931-9-7 9647 Humboldt Trinity R. Valley at Willow Creek; Northern Coast Ranges, Trinity R. Valley, Willow Creek 152 Comment
  UC481288 Image available Salix melanopsis Harold E. Parks 1931-5-14 962 Humboldt between Alton and Carlotta; Van Duzen River; Van Duzen River, Humboldt Co. 15 Comment
  UC481344  Salix melanopsis Harold E. Parks 1931-10-15 1077 Humboldt Bishop Pine Lodge Trinidad 75 Comment
  UC519374  Salix melanopsis Joseph P. Tracy 1933-6-9 12532 Humboldt along Eel R. Shively; Northern Coast Ranges, , Eel R. 30 Comment
  CAS-BOT-BC129157  Salix scouleriana Joseph P. Tracy 1937-2-21 15230 Humboldt Van Duzen River, near Grizzly Creek 91 Comment
  CAS-BOT-BC129163  Salix scouleriana Harold E. Parks 1931-5-12 951 Humboldt Bishop Pine Lodge, Trinidad 150 Comment
  HSC96600  Salix scouleriana Gordon Leppig 2003-2-20 1810 Humboldt Eureka, W end of W Hawthorne St. 3 Comment
  JEPS14778  Salix scouleriana Joseph P. Tracy 1933-4-2 10957 Humboldt Willow Creek Canyon Northern Coast Ranges, Willow Creek Canyon 609 Comment
  JEPS38417  Salix scouleriana W. L. Jepson 1932-8-1 16466 Humboldt Bull Creek 121 Comment
  JEPS38418  Salix scouleriana W. L. Jepson 1932-7-27 16426 Humboldt Bull Creek 106 Comment
  UC519354  Salix scouleriana Joseph P. Tracy 1933-7-11 12706 Humboldt Grouse Mt.; North Coast Ranges, Grouse Mt. 1524 Comment
  UC519394  Salix scouleriana Harold E. Parks January 1933 1341 Humboldt Hwy. 101 Spruce Cove; Trinidad 64 Comment
  UC54926  Salix scouleriana J. P. Tracy 1901-2-3 991 Humboldt immediate vicinity Eureka 0 Comment
  CAS-BOT-BC128961  Salix sitchensis Joseph P. Tracy 1932-7-18 10724 Humboldt Rocky exposed places, head of Brett Hole - Klamath Mountains 1828 Comment
  CAS-BOT-BC128986  Salix sitchensis Harold E. Parks 1931-3-25 903 Humboldt Orick, on Van Duzen River 6 Comment
  CHSC9554  Salix sitchensis E. L. Smith 1971-4-6 924 Humboldt At Field's Landing ca. 7 mi s of Eureka. Comment
  UC1196712  Salix sitchensis Joseph P. Tracy 1935-3-3 13716 Humboldt near mouth Mad R. 6 Comment
  UC490500  Salix sitchensis Joseph P. Tracy 1932-10-2 10857 Humboldt Redwood Creek near Bair's; Northern Coast Ranges, Redwood Creek 213 Comment
  HSC2201  Salix tracyi J. P. Tracy 1933-4-9 10967 Humboldt Bridgeville, along Van Duzen River 229 Comment
  UC585975  Salpichroa origanifolia Joseph P. Tracy 1933-8-22 12972 Humboldt Eureka; Northern Coast Ranges 0 Comment
  RSA168918  Salsola tragus Joseph P. Tracy 1950-8-20 19323 Humboldt Klamath River, near Slate Creek; Below Orleans 8 miles. 122 Comment
  CAS-BOT-BC235015  Sambucus L. R. Abrams 1918-6-16 7181 Humboldt Willow Creek Comment
  RSA21578  Sambucus caerulea C. B. Wolf 1937-9-8 9299 Humboldt North Coast Range, Bull Creek-Petrolia Road, Bull Creek, 6 miles west of Redwood Highway 183 Comment
  JEPS12742  Sambucus mexicana Joseph P. Tracy 1930-7-19 9088 Humboldt near McKay Camp; South Fork Mountain 1676 Comment
  UC177248  Sambucus mexicana Joseph P. Tracy 1912-7-26 3836 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  UC1119901  Sambucus racemosa var. racemosa G. T. Nordstrom 1937-7-1 1446 Humboldt 1.7 mi wsw Orick; Orick Quadrangle Comment
  CHSC52919  Sanicula arctopoides L. P. Janeway 1984-4-11 728 Humboldt On the North Spit of Humboldt Bay; northwest of the boat ramp and north of the Coast Guard Sta. 4 Comment
  HSC21610  Sanicula arctopoides S. J. Hawks 1965-3-12 1 Humboldt W of Eureka Airport Comment
  HSC21636  Sanicula crassicaulis D. E. Anderson 1962-5-1 2193 Humboldt 1 mi. E of junction of Redwood Creek road and road to Hoopa Comment
  HSC95100  Sanicula crassicaulis Andrea Pickart 2002-6-30 131 Humboldt Lamphere Dunes Unit, Humboldt Bay National Wildlife Refuge 24 Comment
  UC1022530  Sanicula crassicaulis C. Ritchie Bell 1952-5-2 3 X450 Humboldt 1.1 mi w of Hydesville Comment
  UC1197095  Sanicula graveolens Joseph P. Tracy 1926-5-2 7448 Humboldt near Ruby Creek (Northern Coast Ranges, Willow Creek Canyon); Northern Coast Ranges, Willow Creek Canyon 609 Comment
  HSC38885  Sanicula graveolens J. O. Sawyer 1970-6-25 2297 Humboldt 1646 Comment
  HSC99074  Sanicula graveolens Cara Witte 2008-6-11 705 Humboldt Horse Mountain Botanical Area. Forest Service Road 6N18. Near utility towers. 1438 Comment
  UC1197094  Sanicula graveolens Joseph P. Tracy 1926-5-30 7520 Humboldt near Ruby Creek (Northern Coast Ranges, Willow Creek Canyon); Northern Coast Ranges, Willow Creek Canyon 609 Comment
  UC154132 Image available Sanicula tracyi Joseph P. Tracy 1908-6-30 2740 Humboldt nw slope Buck Mountain; Northern Coast Ranges; NW slope of Buck Mt., Humboldt Co. 762 Comment
  HSC21645  Sanicula tuberosa F. Morrell 1949-5-15 Humboldt Berry Summit Comment
  HSC31438  Sarcodes sanguinea D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-13 5556 Humboldt Westward lower slopes of Black Lassic near Trinity Co. line. 1585 Comment
  UC902007  Saxifraga mertensiana Joseph P. Tracy 1941-4-11 16858 Humboldt Willow Creek Canyon, along Trinity Highway Willow Creek Canyon 304 Comment
  UCD13239  Saxifraga mertensiana Collector unknown 1976-4-10 106 Humboldt California: Humboldt Co. Junction of stae Highway 36 with Alderpoint Rd. Elev. 1800 ft. 548 Comment
  UC183569  Saxifraga nidifica var. nidifica Joseph P. Tracy 1913-6-17 4178 Humboldt near summit of Buck Mountain; Northern Coast Ranges, Buck Mountain 1676 Comment
  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
  CAS-BOT-BC111333  Schoenoplectus acutus var. occidentalis Robert F. Thorne; P. Everett 1965-8-9 35283 Humboldt Big Lagoon 3 Comment
  HSC44826  Schoenoplectus subterminalis Bruce G. Marcot 1978-7-3 Humboldt Red Mtn. Lake, submerged Comment
  UC668011  Scirpus cernuus Joseph P. Tracy 1938-6-16 15942 Humboldt Trinidad 3 Comment
  UC668015  Scirpus maritimus Joseph P. Tracy 1934-10-13 13684 Humboldt Big Lagoon Big Lagoon (near shore) 3 Comment
  HSC36077  Scirpus microcarpus Jack Watson 1962-5-2 Humboldt Wet soil along game pens of HSU campus Comment
  CAS-BOT-BC110926  Scirpus microcarpus Joseph Prince Tracy 1934-6-21 13242 Humboldt Near Fields Landing 6 Comment
  RSA18606  Scirpus microcarpus Carl B. Wolf 1937-9-11 9324 Humboldt Redwood Highway, 3 miles N of Orick at Davison s Ranch on Prairie Creek. 61 Comment
  HSC41917  Scoliopus bigelovii Rich White 1977-4-23 16 Humboldt 2.5 mi. S of Shelter Cove Rd., S Fork on Bear Creek at Wailaki Campground 561 Comment
  UC1103491  Scoliopus bigelovii Joseph P. Tracy 1933-3-26 10941 Humboldt Big Lagoon 91 Comment
  SEINET12050496  Scoliopus bigelovii F. H. Utech 1988-1 88 -292 Humboldt 1.5 mi N of Bridgeville on Road from Bridgeville to Kneeland, along Brown Creek 350 Comment
  HSC59743  Scrophularia californica Clark L. Miller 1979-5-9 6117 Humboldt Samoa Dunes W of Samoa Blvd. Comment
  CHSC85574  Scutellaria antirrhinoides L. P. Janeway 2003-7-30 7940 Humboldt High North Coast Ranges. Cold Spring; 0.6 km north of the top of Titlow Hill. 1454 Comment
  UC25792  Scutellaria antirrhinoides Harley P. Chandler June, 1901 1323 Humboldt Hupa Indian Reservation; North Coast Ranges, Hupa Indian Reservation 152 Comment
  POM126381  Scutellaria antirrhinoides P. E. Goddard 1907-6-16 b. 127 Humboldt Van Duzen Comment
  UC154010  Scutellaria tuberosa Joseph P. Tracy Jul 27 1908-Jul 30 1908 2717 Humboldt opposite Buck Mountain (Valley of Van Duzen River); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  HSC100456  Sedum Carl C. Marshall Jun 1885 100 Humboldt Pine Creek Ridge. Comment
  HSC44562  Sedum obtusatum subsp. retusum Brad Klipfel 1973-7-15 182 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  UC967446  Sedum radiatum Reid Moran 1951-6-13 3485 Humboldt w slope Buck Mountain; w slope Buck Mountain 853 Comment
  HSC63239  Sedum spathulifolium var. spathulifolium M. A. Baker 1979-6-7 801 Humboldt Hwy. 299, 3 km N of Berry Summit Comment
  CAS-BOT-BC62179  Selaginella oregana Joseph P. Tracy 1933-5-18 12196 Humboldt Mad River, near Blue Lake 15 Comment
  CAS-BOT-BC62182  Selaginella oregana Mrs. A. W. Kildale 1925-1-26 s.n. Humboldt Hungry Hollows, 5-6 mi east of Korbel Comment
  UC1199500  Senecio glomeratus Joseph P. Tracy 1936-8-23 15167 Humboldt near Carlotta 30 Comment
  UC1223022  Senecio glomeratus Joseph P. Tracy 1950-9-10 19360 Humboldt 1 mi n Capetown; Bear River Ridge 304 Comment
  HSC6116  Senecio integerrimus D. E. Anderson 1962-5-1 2195 Humboldt 2 mi. W of Hoopa Comment
  HSC98548  Senecio integerrimus var. major Cara Witte 2008-6-9 696 Humboldt Board Camp Mountain. Forest Serivce Road 4E27. Fork Camp. 1509 Comment
  UC128743  Senecio integerrimus var. major Harley P. Chandler 1086 Humboldt Harris North Coast Ranges 304 Comment
  SEINET11803188  Senecio integerrimus var. major J. P. Tracy 1946-1 17537 Humboldt Kneeland Prairie 762 Comment
  JEPS37460  Senecio minimus W. L. Jepson 1932-7-24 16379 Humboldt near Camp Grant; Eel River Comment
  UCD135752  Senecio sylvaticus W. L. Colwell 1955-10-1 30 Humboldt Brush Mountain. 1066 Comment
  UC249833  Senecio triangularis Joseph P. Tracy 1924-7-4 6702 Humboldt Snow Camp , Snow Camp (Northern Coast Ranges) 1371 Comment
  RSA168840  Senecio vulgaris Joseph P. Tracy 1943-11-28 17454 Humboldt Eel River bar at mouth of Van Duzen near Alton Comment
  HSC34728  Sequoia sempervirens R. E. Cooksey Sep 1972 54 Humboldt Between Miranda and Phillipsville on Avenue of the Giants 30 Comment
  MACF022873  Sequoia sempervirens Trudy R. Ericson 1978-9-3 964 Humboldt 3 mi. east of Carlotta on St. 36 60 Comment
  UC519300  Sequoia sempervirens Joseph P. Tracy 1930-1-1 Humboldt headwaters Little River; North Coast Ranges Comment
  SEINET5716899 Image available Sequoia sempervirens Ronald J. Mastrogiuseppe 1965-1 s.n. Humboldt Humboldt Redwoods State Park; near the Founders Tree.; Humboldt Redwoods State Park Comment
  SEINET11802379  Sericocarpus rigidus J. P. Tracy 1950-1 19378 Humboldt about 3 mi SW of Orleans Comment
  HSC34944  Sherardia arvensis Scott M. Kruse 1975-4-6 1 Humboldt H.B.M. Graham Rd., Bayside 4 Comment
  JEPS50089  Sidalcea diploscypha Lincoln Constance 1934-5-23 613 Humboldt sw slope Upper end Look Prairie Bull Creek Region, South Fork Eel River, Look Prairie (South Fork Eel River, Bull Creek Region) 365 Comment
  POM208991  Sidalcea diploscypha Lincoln Constance 1934-5-23 613 Humboldt Look Prairie, Bull Creek Watershed, Humboldt Redwood Park. 366 Comment
  HSC93948  Sidalcea malachroides Claire Golec 1999-6-2 Humboldt HB&M, old landing off of skid road, along ridgeline above Van Duzen River 427 Comment
  UC1197966  Sidalcea malachroides Joseph P. Tracy 1906-6-10 2472 Humboldt Kneeland Prairie Northern Coast Ranges, Kneeland Prairie 762 Comment
  UC35225  Sidalcea malachroides Chestnut and Drew 1888-7-8 Humboldt near Arcata; near Arcata Comment
  UC668139  Sidalcea malachroides Joseph P. Tracy 1936-5-17 14812 Humboldt 6 mi se Arcata (Fickle Hill); se of Arcata, Fickle Hill 609 Comment
  HSC97915  Sidalcea malviflora subsp. nana Cara Witte 2007-6-14 286 Humboldt White Oak Opening. Along Kinsey Ridge. Near hunting camp. 1238 Comment
  HSC58086  Sidalcea oregana G. L. Clifton, Griswold 1979-8-1 11994 Humboldt Near N Trinity Mtn., close to the town of Hoopa 1799 Comment
  HSC103773  Silene bolanderi M. R. Mesler 2014-6-4 1635 Humboldt Burr Valley Road near Dinsmore 1049 Comment
  HSC100416  Silene californica Carl C. Marshall Jun 1885 93 Humboldt Hills everywhere. Comment
  UC8435  Silene campanulata subsp. campanulata Bolander 1866-1 6517 Humboldt Red Mountain Comment
  UC13584  Silene campanulata subsp. glandulosa W. C. Blasdale 1896-6-8 Humboldt Mad River Comment
  HSC63145  Silene grayi M. A. Baker 1979-6-27 937 Humboldt Below Trinity Summit at head of Oregon Creek Comment
  CAS-BOT-BC389057  Silene laciniata subsp. californica Carl B. Wolf 1927-8-29 1196 Humboldt 7 mi. s. of Ferndale & Capetown, Bear River Ridge--Mt. Glen Comment
  CAS-BOT-BC389063  Silene laciniata subsp. californica Carl D. Duncan 1920-9-22 s.n. Humboldt Hoopa Valley Comment
  SEINET3876405  Sisyrinchium bellum Thomas Nelson 1971-5-9 433 Humboldt Beside highway 36 opposite Goat Rock ca. 1 mi. west of Bridgeville.; 0 Comment
  SD42554  Sisyrinchium californicum Carl B. Wolf 1937-8-10 2899 Humboldt Big Lagoon, bog at State Park. 6 Comment
  HSC48534  Sisyrinchium californicum Mark Flippo 1978-4-18 25 Humboldt McKinleyville, Bella Vista Hill Comment
  UC275554  Smilacina stellata Joseph P. Tracy 1924-9-7 Humboldt Table Bluff Northern Coast Ranges 182 Comment
  UC666970  Smilacina stellata Joseph P. Tracy 1939-4-25 16222 Humboldt Bull Creek; mouth 60 Comment
  RSA246653  Solanum americanum Robert F. Thorne, Percy C. Everett 1965-8-5 35147 Humboldt Samoa Dunes. 3 Comment
  CAS-BOT-BC154215  Solanum umbelliferum H. E. Wilder 1924-4-26 s.n. Humboldt Carlotta Comment
  UC1196147  Solanum umbelliferum Joseph P. Tracy 1948-8-22 18105 Humboldt 5 mi e (of town) Carlotta (by old Strong's District School House) 60 Comment
  SEINET11801714  Solidago canadensis var. salebrosa J. P. Tracy 1948-1 18210 Humboldt Trinity Summit, meadow at Box Camp 1463 Comment
  HSC57941  Solidago elongata G. L. Clifton, Griswold 1979-7-31 11610 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1719 Comment
  HSC99541  Solidago elongata K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-8-10 206 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  HSC67441  Solidago spathulata J. P. Smith 1971-10-6 4948 Humboldt End of Murray Rd. in McKinleyville. Comment
  CAS-BOT-BC374426  Sonchus asper Joseph P. Tracy 1936-8-24 15177 Humboldt Fickle Hill, 6 miles Southeast of Arcata 609 Comment
  UCD136156  Sonchus oleraceus Linda M. Barker 1976-6-1 1546 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  HSC97911  Sorbus scopulina var. cascadensis Cara Witte 2007-6-13 267 Humboldt Along Forest Service Rd. 5N04. Approximately 1 mile east of intersection to Grouse Mountain Lookout. 1534 Comment
  HSC36097  Sparganium angustifolium Ken Harrington 1973-10-7 Humboldt Log pond in Arcata Comment
  RSA355701  Sparganium angustifolium subsp. emersum Walter Wisura, Dave Kelly 1986-7-30 4135 Humboldt North of Crannel on Louisiana Pacific Lumber Co. property; in pond ca. 1 mile beyond the gate. Comment
  UC672884  Sparganium emersum var. emersum Joseph P. Tracy 1934-7-30 13507 Humboldt in front of s end Stone Lagoon (Dry Lagoon); Dry Lagoon 3 Comment
  POM319543  Spartina densiflora Patricia Wilder 1968-8-21 4415 Humboldt Northern Coastal arm of Humboldt Bay, NW of Samoa, on E side of train tracks. 3 Comment
  RSA183496  Spartina densiflora D. E. Anderson 1963-9-15 2814 Humboldt Humbolt Bay Comment
  UCD92967  Spartina densiflora Phyllis Faber 1983-11-11 s.n. Humboldt Humboldt Bay, Arcata. Comment
  RSA796313  Spartina foliosa D. Kearns 1979-8-24 20 Humboldt Arcata Bay. Near the Arcata Boat Launching Facility at the south end of I Street. Comment
  CDA35771  Spartina foliosa J. R. Keck Jr. 1987-10-28 PDR# 331439 Humboldt Humboldt Bay tidal zone near Somoa. 0 Comment
  HSC12566  Spergula arvensis D. La Conte 1970-8-10 3 Humboldt Comment
  RSA246882  Spergula arvensis R. F. Thorne, Percy C. Everett 1965-8-8 35265 Humboldt N. edge of Eureka, E. of Hwy. 101 5 Comment
  HSC37315  Spergularia rubra J. P. Smith 1976-5-27 8814 Humboldt Corner of 14th and G St. Arcata Comment
  CAS-BOT-BC149617  Spiraea douglasii Milo S. Baker 1927-8-21 2484 b Humboldt [Spagnum] Sphagnum Bog near Bald Mt. 914 Comment
  CAS-BOT-BC149619  Spiraea douglasii Joseph P. Tracy 1937-7-17 15435 Humboldt Eureka 30 Comment
  HSC19754  Spiraea douglasii D. E. Anderson 1961-9-9 1793 Humboldt Along S shore of Big Lagoon Comment
  HSC97923  Spiraea douglasii Cara Witte 2007-6-19 291 Humboldt Horse Mountain Botanical Area. Forest Service Road 6N38. Near Horse Mountain mine. 1289 Comment
  RSA12532  Spiraea douglasii Carl B. Wolf 1934-7-2 5906 Humboldt 4.5 miles from Snow Camp on road to Bald Mt (Mtns E of Korbel). 1067 Comment
  UC1222863  Stachys ajugoides var. ajugoides Joseph P. Tracy 1951-6-21 19526 Humboldt back of Everett Beck's Ranch house (bed of former Goose Lake); Goose Lake, Hydesville Comment
  UCLA70873  Stachys ajugoides var. rigida Joseph P. Tracy 1938-6-17 15969 Humboldt near Panther Gap (on road between Bull Creek to Mattole) 822 Comment
  UCLA71172  Stachys ajugoides var. rigida C. Epling, Wm. Robison 1935-7-22 Humboldt Patrick's Point Comment
  BLMAR186  Stachys bergii Donald Hazlett 1994-6-7 186 Humboldt King range, near horse Mt. Ridge rd 670 Comment
  SD93024  Stachys chamissonis W. Bertsch 1953-7-30 230 Humboldt Highway 101, 5 miles north of Arcata. Comment
  POM92413  Stachys emersonii L. R. Abrams 1922-6-25 s.n. Humboldt 2 miles south of Fortuna Comment
  RSA33417  Stachys emersonii Carl B. Wolf 1937-8-13 9246 Humboldt North Coast Range, 11 mi. E. of Hoopa Valley on new road towards Trinity Summit. 1524 Comment
  HSC27045  Stachys mexicana Brad Klipfel 1973-8-25 289 Humboldt Near Lazy L Ranch, Fickle Hill Rd. Comment
  SD29272  Stachys rigida var. rigida Lincoln Constance 1934-5-26 663 Humboldt Sand and gravel bar of S. Fork of Eel River, S. end of Dyerville Bridge. 46 Comment
  SEINET12558145 Image available Stellaria nitens Juha Pykala 1987-1 1853 Humboldt Kneeland, Greenwood Heights, N of the house of prof. D. H. Norris 335 Comment
  UC204744  Stephanomeria elata Joseph P. Tracy 1918-7-5 5034 Humboldt White Thorn Valley Northern Coast Ranges 304 Comment
  HSC76545  Stipa lemmonii Denis Kearns 1981-7-22 316 Humboldt Near Whiteys Peak. 1487 Comment
  HSC97389  Stipa lepida J. P. Tracy 1933-5-20 12247 Humboldt Grassy hillside near Petrolia, Mattole Valley 152 Comment
  HSC32279  Stipa occidentalis var. californica D. E. Anderson, S. Dowty, Thomas W. Nelson 1972-6-14 5624 Humboldt Mt. Lassic and two smaller peaks to immediate E 1768 Comment
  HSC58416  Stipa occidentalis var. californica Griswold, Butler 1979-7-12 7217 Humboldt Near Groves Prairie, close to the town of Willow Creek. 1256 Comment
  CAS-BOT-BC87607  Streptanthus tortuosus Doris K. Kildale 1928-5-27 5955 Humboldt Kneeland Prairie. 853 Comment
  CAS-BOT-BC87616  Streptanthus tortuosus Richard Spellenberg 1965-6-14 1130 Humboldt South of airport, about 5 miles east of Kneeland. Comment
  JEPS54025  Streptanthus tortuosus var. orbiculatus W. L. Jepson Jul 16 1902-Jul 23 1902 2118 Humboldt Trinity Summit 2133 Comment
  UC1198802  Streptanthus tortuosus var. orbiculatus Joseph P. Tracy 1933-6-13 12562 Humboldt on road w from Hoopa to Bair's near summit; Northern Coast Ranges, Hoopa Mountain 1066 Comment
  HSC57945  Streptanthus tortuosus var. tortuosus G. L. Clifton, Terry Griswold 1979-7-31 11620 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1719 Comment
  CAS-BOT-BC269565  Symphoricarpos albus var. laevigatus E. A. McGregor 1921-8-6 s.n. Humboldt Requa and vicinity. 2 miles up Klamath River Comment
  CAS-BOT-BC269571  Symphoricarpos albus var. laevigatus Doris K. Kildale 1925-8-21 1310 Humboldt Yager Creek - near head of bald hills 914 Comment
  UCD137442  Symphoricarpos mollis Joseph P. Tracy 1948-8-15 18144 Humboldt Trinity Summit. On ridge 2 miles east of Grove's Prairie. 1524 Comment
  HSC58821  Symphyotrichum bracteolatum G. L. Clifton, Griswold 1979-8-2 12212 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  HSC96502  Symphyotrichum chilense Gordon Leppig 1998-8-23 1072 Humboldt Big Lagoon County Park, Big Lagoon Bog 3 Comment
  CDA5592  Symphytum asperum T. C. Fuller 1968-7-31 17449 b Humboldt 2 miles north of Arcata, Arcata Bottoms. 0 Comment
  HSC21151  Synthyris reniformis D. E. Anderson 1963-3-23 2399 Humboldt Bald Mtn. Rd. Comment
  HSC21155  Synthyris reniformis D. E. Anderson 1962-2-10 1917 Humboldt 0.5 mi. E of Big Lagoon Elementary School along abandoned stretch of Hwy. 101 Comment
  HSC49169  Synthyris reniformis J. O. Sawyer 1977-4-23 2836 Humboldt Along Big Hill Rd., E of Hoopa Comment
  UC199113  Synthyris reniformis Chestnut and Drew 1888-7-8 Humboldt Campbell's Comment
  CAS-BOT-BC376719  Tanacetum bipinnatum John Thomas Howell; Gordon H. True; Lewis S. Rose 1972-6-5 48817 Humboldt Samoa Comment
  RSA121874  Tanacetum camphoratum H. S. Yates 1936-6-16 5651 Humboldt 0.5 mile SW of Samoa. 6 Comment
  UCR48591  Tanacetum douglasii R. D. Goeden, Don W. Ricker 1987-9-2 870902- 17 Humboldt North Coast, Loleta, at bay on Cannibal Road 3 Comment
  UC1223146  Taraxacum officinale Joseph P. Tracy 1948-5-15 17973 Humboldt Willow Creek Trinity River Comment
  HSC6268  Taraxacum officinale Francis Winter 1960-4-24 Humboldt Samoa Peninsula 6 mi. W of Arcata Comment
  UC1196938  Taraxia ovata Joseph P. Tracy 1939-4-18 16215 Humboldt w side of river Garberville 152 Comment
  UC21435  Tauschia kelloggii C. C. Marshall Apr. 1888 Humboldt Comment
  SD62056  Taxus brevifolia Darley F. Howe 1965-8-10 Humboldt 9.8 miles west of Willowcreek on U. S. #299 885 Comment
  POM117233  Tellima grandiflora Marcus E. Jones 1924-4-26 s.n. Humboldt Scotia Comment
  UCD170789  Tellima grandiflora Gordon Leppig; Sylvia Leppig and Kai Neander 1998-5-6 745 Humboldt Rt. 101. Overlooking Big Lagoon. 40 Comment
  RSA183521  Thermopsis gracilis var. gracilis D. E. Anderson 1965-5-15 3692 Humboldt About 7 miles north of Hoopa on Bloody Camp Prairie Road Comment
  HSC64140  Thermopsis macrophylla J. O. Sawyer, J. P. Smith, J. Cole 1977-7-2 3050 Humboldt Rd. 11N17 between Dagsaw Springs and Divide Lake 793 Comment
  UC1129924  Thermopsis macrophylla var. macrophylla A. E. Wieslander 1931-5-19 7 Humboldt near Orleans; Klamath National Forest, Hoopa Quadrangle Comment
  SEINET200821  Thermopsis rhombifolia J. P. Tracy 1929-7-4 8612 Humboldt French Camp Ridge. 1067 Comment
  JEPS79993  Thlaspi californicum Joseph P. Tracy 1921-5-30 5483 Humboldt Kneeland Prairie; Northern Coast Ranges, Kneeland Prairie 762 Comment
  NY17200  Thuja plicata I. L. Wiggins 1955-7-31 13594 Humboldt This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  RSA1090  Thuja plicata E. R. Johnson 1928-8-26 1149 Humboldt 7 miles east of Arcata Comment
  RSA34287  Thuja plicata C. B. Wolf 1927-8-29 1192 Humboldt 7 miles south of Ferndale and Capetown, Bear River Ridge, Mt. Glen. Comment
  SJSU124  Thuja plicata Emily D. Smith 1932-8-29 Humboldt near Korbel, about 10 miles east of Arcata Comment
  UC1225754  Thysanocarpus curvipes Joseph P. Tracy 1948-5-31 18005 Humboldt Harris 762 Comment
  CAS-BOT-BC88324  Thysanocarpus curvipes John H. Thomas 1968-4-21 14363 Humboldt Near mouth of Bluff Creek about 6 miles northeast of Weithchpec near Bluff Creek Campground. 140 Comment
  HSC55614  Tiarella trifoliata var. unifoliata Overton, Butler 1979-7-23 9503 Humboldt Near Titlow Hill, close to the town of Willow Creek. 1280 Comment
  HSC55631  Tiarella trifoliata var. unifoliata Overton, Butler 1979-7-24 9633 Humboldt Near Friday Camp, close to the town of Willow Creek. 1250 Comment
  HSC98805  Tiarella trifoliata var. unifoliata Cara Witte 2008-8-5 994 Humboldt Waterhole off Forest Service Road 5N10. Approximately 2 miles E of intersection with National Forest 1. 1346 Comment
  SBBG70435  Tiarella trifoliata var. unifoliata L. Rowntree 1931-7-23 Humboldt Carlotta Comment
  CAS-BOT-BC436906  Tiarella trifoliata var. unifoliata Milo S. Baker 1923-7-1 82 Humboldt Near Wilder's Comment
  RSA24194  Tiarella trifoliata var. unifoliata Carl B. Wolf 1941-3-1 9979 Humboldt 1 mi. n.e. of Strongs Station (on the Van Duzen River) on rd. to Yager. 61 Comment
  UC677699  Tiarella trifoliata var. unifoliata C. C. and S. K. Harris 1936-6-16 660 Humboldt Redwood forest on Yager Road from Carlotta 152 Comment
  SEINET3888616  Tofieldia occidentalis Carl B. Wolf 1934-7-2 5878 Humboldt Snow Camp (Mts. E. of Korbel). Near small lake.; 0 1372 Comment
  UC1198897  Tolmiea diplomenziesii Joseph P. Tracy 1924-6-1 6689 Humboldt Lawrence Creek Northern Coast Ranges (at crossing of the Kneeland Road) 609 Comment
  HSC20439  Tolmiea diplomenziesii F. B. Plett 1963-5-15 47 Humboldt 1.5 mi. N of Trinidad along old Hwy. 101 Comment
  JEPS49718  Tolmiea diplomenziesii W. L. Jepson 1902-7-11 2013 Humboldt South Fork of Trinity River; Martin's Ranch Comment
  RSA80427  Tonella tenella Margaret Stason 1938-4-14 12410 Humboldt Few miles east of Arcata on Weaverville Road. Comment
  HSC34707  Torilis arvensis Thomas W. Nelson 1974-7-20 1698 Humboldt McKeown Ranch N of Dinsmore Comment
  UCD128165  Torilis arvensis Thomas Nelson; Jane Nelson 1978-7-2 4387 Humboldt along Highway 36 ca. 1 mile east of Grizzly Creek. Comment
  UC1197062  Torilis nodosa Joseph P. Tracy 1930-8-3 9154 Humboldt McClellan Mountain 762 Comment
  CAS-BOT-BC169175  Toxicodendron diversilobum Volney Rattan 1878-1-1 s.n. Humboldt Undspecified Comment
  UCD136879  Tracyina rostrata Joseph P. Tracy 1950-6-23 18859 Humboldt Dobbyn Creek, 3 miles northeast of Alderpoint. 213 Comment
  HSC98856  Triantha occidentalis subsp. occidentalis Cara Witte 2008-7-30 973 Humboldt Forest Service Road 5N04. 1/4 mile east of intersection with Forest Service Road 4N70. 1583 Comment
  SEINET8999606 Image available Trichostema lanceolatum Unknown 1934-8-19 13595 Humboldt TRINITY RIVER VALLEY, at Willow Creek 152 Comment
  HSC14448  Trichostema lanceolatum D. E. Anderson 1961-9-3 1775 Humboldt 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
  UC1198627  Trientalis latifolia Joseph P. Tracy 1935-5-24 13816 Humboldt Eureka; Northern Coast Ranges, Eureka 0 Comment
  JEPS43093  Trientalis latifolia Lincoln Constance 1934-6-1 775 Humboldt Mouth of Bull Creek, Bull Creek Road, between Dyerville Bridge and Bull Creek, South Fork Eel River Bull Creek; Bull Creek Region, South Fork Eel River 45 Comment
  UCD117587  Trientalis latifolia D. Sanchez-Mata; S. Rivas-Martinez, M. Costa, and M. Ladero 1998-6-10 s.n. Humboldt Trinidad-Patricks Point. 25 Comment
  UC147171  Trifolium albopurpureum var. albopurpureum Harley P. Chandler 1901-6-1 1412 Humboldt Klamath River North Coast Ranges 243 Comment
  UC1197234  Trifolium albopurpureum var. dichotomum Joseph P. Tracy 1922-4-30 6021 Humboldt near Willow Creek; Northern Coast Ranges, Trinity River Valley 152 Comment
  UC1197235  Trifolium albopurpureum var. dichotomum Joseph P. Tracy 1921-6-12 5820 Humboldt Kneeland Prairoe Northern Coast Ranges 762 Comment
  UC1223394  Trifolium albopurpureum var. dichotomum Joseph P. Tracy 1943-5-9 17420 Humboldt on Trinity River (Willow Creek) Comment
  BLMAR385  Trifolium angustifolium Jennifer Anthony-Wheeler 2004-6-28 385 Humboldt King range, Mouth of Mattole River, along road in willow thickets 36 Comment
  CDA4307  Trifolium angustifolium J. R. Keck Jr., W. Simas 1973-5-3 Humboldt Bear River Road, between Cook & Morrison. 0 Comment
  UC1103437  Trifolium barbigerum J. P. Tracy 1900-6-5 842 Humboldt immediate vicinity Eureka Comment
  UC1197180  Trifolium bifidum var. decipiens J. P. Tracy 1899-5-26 47 Humboldt immediate vicinity Eureka 0 Comment
  UC495643  Trifolium bifidum var. decipiens Joseph P. Tracy 1927-6-18 8186 Humboldt betw Petrolia and the ocean (hills); Northern Coast Ranges 152 Comment
  UC1197206  Trifolium ciliolatum Joseph P. Tracy 1927-5-8 5463 Humboldt facing South Fork of Eel River (Phillipsville); Northern Coast Ranges 121 Comment
  SEINET12157150  Trifolium depauperatum J. P. Tracy 1933-1 12242 Humboldt Petrolia, Mattole Valley Comment
  UCD108809  Trifolium dichotomum Joseph P. Tracy 1933-5-20 12234 Humboldt Cape Mendocino. Mouth of Domingo Creek. South of point of the Cape. Comment
  UC1223466  Trifolium dubium Joseph P. Tracy 1935-5-25 13830 Humboldt Blocksburg Comment
  UCD108864  Trifolium dubium A. H. Murphy 1947-4-25 s.n. Humboldt 2 miles N of Blocksburg, W. Smith Ranch. Comment
  HSC97569  Trifolium eriocephalum subsp. eriocephalum Cara Witte 2007-6-7 225 Humboldt Along National Forest 1 on Kinsey Ridge. 1 mile south of intersection with 4N06. 1263 Comment
  UC162781  Trifolium eriocephalum var. eriocephalum Joseph P. Tracy 1908-6-8 2641 Humboldt at top Lawrence Creek hill; Northern Coast Ranges, Kneeland Prairie 762 Comment
  UC302111  Trifolium eriocephalum var. eriocephalum Joseph P. Tracy 1926-7-5 7729 B Humboldt Valley of South Yager Creek Northern Coast Ranges 762 Comment
  HSC71441  Trifolium fucatum J. P. Smith 1971-10-9 5044 Humboldt Banks and flood plain of the Mad River above the fish hatchery. Comment
  UC41600  Trifolium fucatum J. Burtt Davy 1899-6-19 5684 Humboldt Hoopa Mtn North Coast Ranges Comment
  UC495642  Trifolium gracilentum Joseph P. Tracy 1932-5-22 10124 Humboldt betw Miranda and Redway (South Fork of Eel River); North Coast Ranges 91 Comment
  SEINET12148015  Trifolium howellii J. P. Tracy 1934-1 13449 Humboldt Grouse Mt 1524 Comment
  HSC31201  Trifolium longipes subsp. oreganum D. E. Anderson 1972-6-20 5757 Humboldt Along the N slope of Horse Mtn. Comment
  HSC40537  Trifolium longipes subsp. oreganum Thomas W. Nelson, Jane P. Nelson 1976-5-23 2527 Humboldt In the Canyon of Bear Creek, W of Black Lassic 1524 Comment
  HSC98896  Trifolium longipes subsp. shastense Cara Witte 2008-6-11 706 Humboldt Horse Mountain Botanical Area. Forest Service Road 6N18. 1438 Comment
  UC165529  Trifolium longipes var. hansenii Joseph Burtt Davy 1899-6-22 5765 Humboldt Trinity Summit Comment
  HSC95079  Trifolium macraei Andrea Pickart 2002-7-3 156 Humboldt Lanphere Dunes: Big Dune, Lanphere Dunes Unit, Humboldt Bay National Wildlife Refuge 0 Comment
  HSC15149  Trifolium microcephalum D. E. Anderson 1965-5-8 3645 Humboldt About 2 mi. N of Willow Creek on the road running along E side of Trinity River Comment
  UC1223356  Trifolium microcephalum Joseph P. Tracy 1939-4-29 16259 1/2 Humboldt Orleans 121 Comment
  UC1197539  Trifolium microcephalum Joseph P. Tracy 1910-6-5 3145 Humboldt Ocean Beach Northern Coast Ranges, Humboldt Bay Comment
  HSC38068  Trifolium microdon Thomas W. Nelson, Jane P. Nelson 1976-5-30 2639 Humboldt McKeown Ranch, N of Dinsmore. Comment
  RSA195475  Trifolium microdon C. R. Gunn 1963-6-2 2690 Humboldt Two miles SE of Arcata Comment
  HSC90316  Trifolium repens Jean Hanson 1980-5-24 77 Humboldt Indian (Gunther) Island. Humboldt Bay, City of Eureka. W end of Island. Comment
  HSC96483  Trifolium repens Gordon Leppig 1997-6-19 450 Humboldt Big Lagoon County Park, Big Lagoon Bog 3 Comment
  JEPS4384  Trifolium variegatum var. variegatum Lincoln Constance 1934-5-31 764 Humboldt along n side Bull Creek (Bull Creek Flat, from w boundary of park to Grasshopper Park Rd (Squaw Creek)); South Fork Eel River, Bull Creek region Comment
  UC1223541  Trifolium variegatum var. variegatum Joseph P. Tracy 1933-5-20 12253 Humboldt near Petrolia (hills betw town and Ocean) Comment
  HSC15235  Trifolium willdenovii Francis Winter 1960-4-24 Humboldt Redwood Creek Ranch 381 Comment
  UC1223316  Trifolium willdenovii Joseph P. Tracy 1942-6-12 17111 Humboldt along hwy (at head of lagoon); Big Lagoon Comment
  RSA168944  Trillium albidum Joseph P. Tracy 1950-5-7 18646 Humboldt Head of South Yager. Comment
  CAS-BOT-BC519092  Trillium chloropetalum var. chloropetalum D. H. Norris 1970-5-20 12216 Humboldt At crest of ridge on Big Hill Road east of Hoopa, at streamhead. Comment
  HSC96774  Trillium kurabayashii M. Mesler 2006-5-25 604 Humboldt Big Hill Rd., 11.4 mi. E of Hwy. 96 at Six Rivers Forest boundary 1463 Comment
  HSC15699  Trillium ovatum D. E. Anderson 1962-2-23 1923 Humboldt Grove E of HSC campus Comment
  HSC41250  Trillium ovatum Brad Klipfel 1974-5-27 397 Humboldt Horse Mtn. Comment
  HSC48743  Trillium ovatum Brad Klipfel 1973-6-10 68 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  SEINET3991731  Trillium ovatum Unknown 1913-2-9 Humboldt Near Hydesville Comment
  SEINET12048689  Trillium ovatum F. H. Utech, Walter, W.; Knight, I. 1984-1 84 -176 Humboldt ca 0.4 mi S towards Redcrest on Avenue of Giants from junction with US 101 15 Comment
  SJSU10558  Trillium ovatum C. P. Hansen 1966-4-6 70 Humboldt by Kneeland Rd 20 mi E of Eureka Comment
  JEPS10422  Triphysaria eriantha subsp. rosea Joseph P. Tracy 1941-4-3 Humboldt Samoa , Samoa (Humboldt Bay) Comment
  UC168994  Triphysaria pusilla Joseph Burtt Davy and Walter C. Blasdale 1899-6-10 5390 Humboldt Hubbard's Station; North Coast Ranges, Hubbard's Station Comment
  HSC32371  Triphysaria versicolor subsp. versicolor Linda M. Barker 1974-5-19 197 Humboldt Arcata, Samoa Blvd., 200 yards E of Hwy. Patrol Station, median divider Comment
  CAS-BOT-BC199629  Trisetum canescens David D. Keck 1948-7-2 6006 Humboldt E. side of Rock Ridge, E. of Berry's Summit, 4.1 miles W. of Willow Creek. Near Boundary of Six Rivers Nat'l Forest 457 Comment
  HSC38626  Trisetum cernuum D. E. Anderson, J. P. Smith 1971-6-18 - 1102 Humboldt Under bridge over Redwood Creek on Hwy. 299 Comment
  CAS-BOT-BC519145  Triteleia hyacinthina Doris Kildale 1931-6-6 10863 Humboldt Gans Prairie, Orick - Weitchpec Road Comment
  HSC38090  Triteleia laxa Thomas W. Nelson, James Nelson 1976-5-30 2611 Humboldt McKeown Ranch, N of Dinsmore. Comment
  JEPS558  Triteleia laxa Joseph P. Tracy 1932-6-26 10269 Humboldt Fort Baker 762 Comment
  IRVC27661  Triteleia peduncularis J. P. Tracy 1898-7-5 266 Humboldt Immediate vicinity of Eureka; near Ryan's Slough Hill. 0 Comment
  CAS-BOT-BC85852  Tsuga heterophylla P. C. Everett; E. K. Balls 1953-10-13 18654 Humboldt 11.3 mi. to 16.6 mi. e. of jct. with Hwy 101 on Hwy 299 from Blue Lake 640 Comment
  CAS-BOT-BC85898  Tsuga heterophylla Doris K. Kildale 1928-3-27 4361 Humboldt Top of Liscom Hill 792 Comment
  UC484080  Tsuga heterophylla Carl B. Wolf 1930-10-25 1763 Humboldt 12 mi above Blue Lake (along Blue Lake to Willow Creek Road (Lord Ellis Road)) 304 Comment
  CDA26  Ulex europaeus Yeager, Henson 1931-7-6 s.n. Humboldt Eureka. 0 Comment
  UC303180  Ulex europaeus Joseph P. Tracy 1923-11-24 6594 Humboldt Eureka Northern Coast Ranges, Eureka 0 Comment
  HSC95838  Umbellularia californica Kevin Thomas 2004-4-26 13 Humboldt Lord Ellis Summit along Titlow Hill Rd., rd. turnout Comment
  UC175201  Uropappus lindleyi Joseph P. Tracy 1913-6-25 4349 Humboldt Lower Foothills of Buck Mountain, on its northwest slope. Northern Coast Ranges. 762 Comment
  HSC60134  Urtica dioica subsp. gracilis M. A. Baker 1977-5-1 277 Humboldt E of Humboldt State University. Comment
  UC229829  Urtica urens Joseph P. Tracy 1922-7-16 6103 Humboldt Northern Coast Ranges, at Eureka Eureka; Northern Coast Ranges, Eureka 0 Comment
  UC1197773  Vaccinium cespitosum J. P. Tracy 1901-4-7 1007 Humboldt immediate vicinity Eureka 0 Comment
  HSC31334  Vaccinium ovatum Larry E. DeBuhr, G. D. Wallace 1972-5-22 615 Humboldt Del Norte Coast Redwood State Park, Damnation Trail Comment
  HSC34628  Vaccinium ovatum Lon Hall 1975-3-29 304 Humboldt Near Shelter Cove 488 Comment
  RSA1918  Vaccinium ovatum C. B. Wolf 1930-10-24 1017 Humboldt Along the Kamath River, 2 mi. below mouth of Salmon River. Comment
  RSA2925  Vaccinium ovatum C. B. Wolf 1931-8-29 1240 Humboldt Near summit of Orick Hill on road to Weitchpec. 305 Comment
  RSA503177  Vaccinium ovatum Gary D. Wallace 1971-7-28 947 Humboldt King Range, ca. 4 mi. SE of Shelter Cove along King Range Rd. 3.8 mi. S of jct. with Shelter Cove Rd. Comment
  UC1197766  Vaccinium ovatum Joseph P. Tracy 1924-5-4 6672 Humboldt Bridgeville Northern Coast Ranges 228 Comment
  UCD166926  Vaccinium ovatum Colleen Rossier 2016-9-19 10 Humboldt In vicinity of Fish Lake, plot Fish Lake #2. 541 Comment
  UC1537151  Vaccinium ovatum Gordon H. True Jr. 1936-5-11 467 Humboldt 8 mi w Miranda; Salmon Creek 152 Comment
  CAS-BOT-BC199424  Vaccinium parvifolium Doris K. Kildale 1927-3-14 1533 Humboldt Southern approach to Blue Slide on old Bridgeville road. Van Duzen River Comment
  CHSC609  Vaccinium parvifolium V. Holt 1933-4-10 Humboldt Comment
  HSC7923  Vaccinium parvifolium Francis Winter 1960-4-24 Humboldt 1 mi. E of Pine Ridge Summit 854 Comment
  UC154041  Vaccinium parvifolium J. P. Tracy 1907-5-20 2563 Humboldt Immediate vicinity Eureka 0 Comment
  UCD118162  Vaccinium parvifolium T. I. Storer 1931-7-1 2222 Humboldt Coast. Comment
  JEPS58714  Vaccinium uliginosum subsp. occidentale Joseph P. Tracy 1924-7-13 6725 Humboldt Big Lagoon Northern Coast Region 6 Comment
  HSC48152  Valeriana sitchensis subsp. sitchensis Brad Klipfel 1975-5-30 656 Humboldt N of Horse Mtn. Comment
  CAS-BOT-BC76045  Vancouveria hexandra Mrs. H. C. Cantelow 1936-5-17 s.n. Humboldt 4.5 miles east of Orick. Comment
  UC1196345  Vancouveria hexandra Joseph P. Tracy 1937-7-24 15535 Humboldt Trinity Summit, head of Little Hors-Linto Creek Little Hors-Linto Creek; Trinity Summit, Little Hors-Linto Creek 1371 Comment
  HSC37713  Vancouveria hexandra J. D. Ackerman, A. M. Montalvo 1974-7-17 373 Humboldt Van Duzen Co. Park, off Hwy. 36, 6 mi. E of Carlotta 61 Comment
  CAS-BOT-BC76085  Vancouveria planipetala Doris K. Kildale 1928-5-19 5204 Humboldt Chalk Mountain. Comment
  UC1222354  Vancouveria planipetala Joseph P. Tracy 1950-7-2 18966 Humboldt 6 mi ne Hawkins Bar (Happy Camp Mountain); Trinity Summit Range, Happy Camp Mountain 1280 Comment
  UCD95099  Vancouveria planipetala R. N. Raynor 1934-5-7 s.n. Humboldt above Fort Seward. 609 Comment
  UC582591  Verbascum blattaria Joseph P. Tracy 1937-6-26 15366 Humboldt Trinity River Valley at Willow Creek; Trinity River Valley at Willow Creek 152 Comment
  SDSU11035  Verbascum thapsus Harvey 1938-8-14 2322 Humboldt Trinity River. US 299. Comment
  HSC45597  Veronica americana Diane L. Reed 1978-5-27 136 Humboldt 0.3 mi. up Bair Rd. from Hwy. 299 Comment
  HSC21195  Veronica americana P. Markle 1962-5-22 53 Humboldt Along road to City of Arcata reservoir Comment
  JEPS26268  Veronica arvensis Joseph P. Tracy 1906-6-10 2482 Humboldt Kneeland Prairie; Northern Coast Ranges, Kneeland Prairie 762 Comment
  HSC21223  Veronica arvensis William J. Ferlatte 1963-5-15 47 Humboldt Waste place near 11th and B Sts., Arcata Comment
  HSC21209  Veronica persica Elrid H. Spinas 1948-5-22 35 Humboldt Horse Mtn. Comment
  CHSC53307  Veronica scutellata L. P. Janeway 1984-5-16 795 Humboldt On the North Spit of Humboldt Bay; on the west side of Samoa Rd and ca 1/4 mile northwest of the boat ramp. 3 Comment
  UC176113  Veronica scutellata Joseph P. Tracy 1912-7-21 3778 Humboldt Alton; Northern Coast Region, Alton 30 Comment
  HSC55299  Veronica serpyllifolia subsp. humifusa Terry Griswold, Marvin Butler 1979-7-10 6379 Humboldt Near Board Camp Mtn., close to the town of Willow Creek 1372 Comment
  HSC75486  Veronica serpyllifolia subsp. humifusa J. O. Sawyer 1980-7-18 3609 Humboldt North Trinity Mountain Research Natural Area, north of Mill Creek Lake to Red Cap Hole. Comment
  UC1198063  Veronica serpyllifolia subsp. humifusa Joseph P. Tracy 1935-7-23 14152 Humboldt Trinity Summit, at McKay Prairie Trinity Summit; , McKay Prairie 1584 Comment
  RSA249386  Veronica serpyllifolia var. humifusa D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5584 Humboldt Mount Lassic and 2 smaller peaks to immediate east. 1768 Comment
  HSC102551  Vicia americana var. americana M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-29 1539 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1579 Comment
  HSC82109  Vicia americana var. americana Thomas W. Nelson, Jane P. Nelson 1980-5-25 5252 Humboldt Along road from Dinsmore to Anderson Crossing, McKeown Ranch Rd. 100 m N of junction of road to Hindley Cabin 823 Comment
  UC1197467  Vicia americana var. americana Joseph P. Tracy 1914-5-14 4437 Humboldt Fort Seward; Northern Coast Ranges 121 Comment
  RSA293198  Vicia angustifolia J. P. Smith 1973-5-26 6831 Humboldt Scotia Bluffs along the Eel River near Rio Dell. 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
  RSA170257  Vicia hirsuta Joseph P. Tracy 1916-5-31 4689 Humboldt Stitz Creek. Along Eel River South Fork to Scotia. 61 Comment
  UCSC000430  Vicia sativa H. S. Yates 1936-6-23 5870 Humboldt 13 miles S.E. of Scotia Comment
  HSC31808  Vicia sativa subsp. sativa Donald Spalinger 1974-4-25 22 Humboldt Forest across from 1756 Ridgewood Dr. 122 Comment
  HSC89577  Vicia tetrasperma K. Grenier, Leonel Arguello 1989-6-19 353 Humboldt Bald Hills Grasslands. At Stagecoach Stop. Comment
  CAS-BOT-BC263949  Viola adunca L. B. Kildale 1927-4-10 3084 Humboldt Big Lagoon Comment
  CAS-BOT-BC263954  Viola adunca W. R. Dudley 1899-6-1 s.n. Humboldt Eureka Penninsula Comment
  UC1761536  Viola adunca Mrs. Wilder 1926-4 5432 Humboldt Carlotta, Mrs. Wilder's yard Comment
  HSC65883  Viola cuneata M. A. Baker 1980-6-16 1945 Humboldt Near Onion Mtn. 1280 Comment
  HSC85894  Viola cuneata Barry Silver 1986-4-13 512 Humboldt Bair Road, 6.4 mi. WSW of Hoopa Comment
  HSC41239  Viola cuneata Brad Klipfel 1974-5-27 378 Humboldt Horse Mtn. NW of the towers Comment
  HSC74650  Viola glabella M. A. Baker 1980-5-17 1242 Humboldt Near Le Perron Peak 1066 Comment
  CAS-BOT-BC536491  Viola glabella Elizabeth Parsons Hawver 1915-6-1 s.n. Humboldt Carlotta Comment
  UC1761969  Viola glabella Joseph P. Tracy 1937-7-2 15408 Humboldt Trinity Summit, head of Hors-Linto Creek 1371 Comment
  UC1198450  Viola ocellata Joseph P. Tracy 1921-4-24 5452 Humboldt Phillipsville Flat, South Fork of Eel River Phillipsville Flat; Northern Coast Ranges, South Fork of Eel River, Phillipsvill 91 Comment
  UC668245  Viola ocellata Joseph P. Tracy 1938-5-1 15731 Humboldt Trinity River Valley, at Willow Creek Willow Creek; Trinity River Valley, Willow Creek 152 Comment
  HSC49627  Viola odorata R. York 1979-4-13 218 Humboldt College Cove, 1 mi N of Trinidad Comment
  HSC99094  Viola praemorsa subsp. praemorsa C. Witte 2007-5-8 7 Humboldt Cold Spring. 1/2 mile south of Titlow Hill. 1397 Comment
  UC1121616  Viola praemorsa subsp. praemorsa R. Stahelin 1933-5-17 Humboldt Kneeland Prairie Comment
  HSC32889  Viola sheltonii Thomas W. Nelson 1973-5-30 975 Humboldt Humboldt/Trinity Co. line, Mt. Lassic 1790 Comment
  UC668241  Viola sheltonii Joseph P. Tracy 1933-7-16 12769 Humboldt near McKay Camp (South Fork Mountain); South Fork Mountain 1676 Comment
  CAS-BOT-BC198762  Vulpia bromoides Doris K Niles 1950-6-1 5 Humboldt Island in Eel River, Niles field. Comment
  HSC35018  Vulpia microstachys Thomas W. Nelson 1975-5-24 1878 Humboldt McKeown Ranch, N of Dinsmore. Comment
  UCD93706  Vulpia microstachys H. S. Yates 1936-6-17 5712 Humboldt near Burr Valley. 914 Comment
  CDA28607  Vulpia microstachys var. ciliata G. F. Hrusa 1993-6-17 11224 Humboldt Red Mountain; Entrance gate to Red Mt. Comment
  RSA121356  Vulpia microstachys var. pauciflora H. L. Person 1932-5-11 s.n. Humboldt Near Arcata 0 Comment
  UC1145191  Vulpia microstachys var. pauciflora Joseph P. Tracy 1936-7-5 15039 Humboldt Grouse Mountain 1524 Comment
  UC594246  Vulpia microstachys var. pauciflora S. K. Harris, J. P. Tracy and H. S. Yates 1936-6-17 3431 Humboldt Buck Mountain 822 Comment
  UCD94572  Vulpia microstachys var. pauciflora A. H. Murphy 1947-6-24 s.n. Humboldt Horse Mtn. 2 miles southeast of Berry's Summit on US Hwy 299. Comment
  UCD94573  Vulpia microstachys var. pauciflora A. H. Murphy 1951-6-1 54 Humboldt South Fork Mtn. about 3 miles east of Low Gap. 822 Comment
  UCD94898  Vulpia myuros var. hirsuta A. Murphy 1951-4-2 s.n. Humboldt along Highway 101, 0.75 mile south of Phillipsville. Comment
  CAS-BOT-BC128815  Whipplea modesta L. R. Abrams 1918-6-16 7145 Humboldt Lower arid Transition Zone, Willow Creek Comment
  HSC70379  Whipplea modesta M. A. Baker 1980-6-7 1796 Humboldt Near Brush Mtn. 287 Comment
  UC161564  Whipplea modesta Joseph P. Tracy 1911-7-7 3429 Humboldt Brannan Mt Northern Coast Ranges (viz: ridge n of Willow Creek, between Willow and Campbell Creeks, near the summit) 1219 Comment
  HSC79482  Woodwardia fimbriata Kenneth Clark 1980-6-14 678 Humboldt N fork of Dead Man's Gulch 84 Comment
  UC129416  Wyethia angustifolia Harley P. Chandler June 1901 1494 Humboldt Klamath River North Coast Ranges, Klamath River 426 Comment
  UC582644  Wyethia angustifolia Joseph P. Tracy 1927-7-24 8295 Humboldt Upper Mattole Valley; Upper Mattole Valley 152 Comment
  UC1199260  Wyethia angustifolia Joseph P. Tracy 1936-6-10 14928 Humboldt w of mouth South Fork Trinity River 457 Comment
  CAS-BOT-BC326976  Wyethia longicaulis Joseph P. Tracy 1938-7-7 16041 Humboldt Grouse Mountain 1524 Comment
  HSC72906  Xerophyllum tenax M. A. Baker 1980-6-16 1951 Humboldt Near Onion Mtn. 1280 Comment
  UC1173649  Xerophyllum tenax Joseph P. Tracy 1937-8-15 15665 Humboldt French Camp 1066 Comment
  RSA21089  Zigadenus micranthus Carl B. Wolf 1937-6-14 8817 Humboldt Kneeland Prairie; North Coast Range. 823 Comment
  HSC62988  Zostera marina David Wheeler 1979-4-22 78 Humboldt Mad River Slough, 1 mi. W of intersection of Mad River Rd. and Iverson Rd. 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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