Search Results — 2000 specimen records retrieved (1361 records with coordinates)
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(For large data reqests, please contact Jason Alexander, jason_alexander@berkeley.edu.)

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

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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  UC502913  Abies concolor Joseph P. Tracy 1927-6-12 8144 Humboldt Horse Mountain 1524 Comment
  CDA469  Abies grandis D. Spadoni 2000-10-6 PDR# 1142246 Humboldt USFS Rd. 1, Blue Lake. 0 Comment
  OBI36630  Abies grandis David J. Keil 1983-7-2 17304 Humboldt Patrick's point Comment
  UCD134238  Abies grandis T. I. Storer 1931-7-1 2225 Humboldt Coast. Comment
  HSC12834  Abies magnifica Thomas W. Nelson, Wilbur Peterson 1970-12-2 296 Humboldt HSC Campus, W side of tennis court Comment
  HSC23109  Abronia latifolia Norman Dennis 1965-6-8 106 Humboldt Samoa Peninsula along the W side of Humboldt Bay Comment
  HSC59462  Abronia latifolia M. A. Ericksen 1979-5-18 295 Humboldt Samoa Dunes, .5 mi. S of Simpson Timber Company plant entrance Comment
  SEINET10838870  Abronia latifolia Mary Merello 1993-6-19 Merello 663 Humboldt Along Petrolia-Capetown Road. Pacific Coastal dunes. 40 Comment
  HSC16134  Abronia latifolia D. E. Anderson 1961-9-22 1828 Humboldt Comment
  RSA0025084  Abronia latifolia Robert F. Thorne 1957-9-3 19012 Humboldt Little River Beach, few miles S of Trinidad. Comment
  RSA0025093  Abronia latifolia P. A. Munz 1954-7-25 19867 Humboldt Humboldt Lighthouse south of Samoa. Comment
  HSC100371  Acaena novae-zelandiae J. McRae 2010-6-18 Humboldt McKinleyville, USFS Humboldt Nursery. Comment
  UCD112495  Acaena novae-zelandiae D. W. Cooper 1967-6-30 s.n. Humboldt SE of Forest Service Nursey, ca. 2 miles SE of Crannell and ca. 4 miles E of US Highway 101. Comment
  CAS-BOT-BC330548  Acer circinatum H. E. McMinn 1922-8-5 355 Humboldt Near Van Duzen River Comment
  HSC76199  Acer glabrum var. torreyi Overton, Butler 1979-8-2 12507 Humboldt Near Bret Hole, close to the town of Hoopa 1554 Comment
  HSC99409  Acer glabrum var. torreyi K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-6-28 58 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  HSC2807  Acer macrophyllum Jack Rockwell 1962-4-29 44 Humboldt E bank of Redwood Creek, near Hwy. 299 549 Comment
  UC1199013  Acer macrophyllum Joseph P. Tracy 1914-8-23 4592 Humboldt in valley of North Fork of Elk River Northern Coast Region, Humboldt Bay, North Fork Elk River (Region about Humboldt Bay) 0 Comment
  CAS-BOT-BC28588  Achillea millefolium David D. Keck 1938-8-5 4765 Humboldt Clam Beach Comment
  CAS-BOT-BC28582  Achillea millefolium J. Clausen 1939-6-23 1728 Humboldt On the Bull Creek Road near intersection with Redwood Highway at Dyerville Comment
  HSC90327  Achillea millefolium Jean Hanson 1980-6-22 105 Humboldt Indian (Gunther) Island, Humboldt Bay, City of Eureka, W end of island Comment
  HSC48482  Achlys triphylla Brad Klipfel 1974-7-23 466 Humboldt Horse Mtn. area Comment
  SBBG2286  Achlys triphylla H. and M. Dearing 1933-5-16 598 Humboldt Weott Comment
  CAS-BOT-BC400025  Achlys triphylla Joseph P. Tracy 1933-5-21 12208 Humboldt North Coast Ranges. McClellan Mt. 670 Comment
  HSC3330  Achlys triphylla Francis Winter 1960-4-23 Humboldt 1 mi. S of Simpson Creek, Korbel-Maple Creek Rd. 213 Comment
  RSA21086  Achlys triphylla C. B. Wolf 1937-6-19 8914 Humboldt North Coast Range, 7.2 mi. above Bridgeville on grade to Dinsmores. 457 Comment
  UC1103143  Achnatherum lemmonii Joseph P. Tracy 1912-7-31 3942 Humboldt Buck Mountain, near summit Northern Coast Ranges, Buck Mountain 1676 Comment
  UC1103144  Achnatherum lemmonii J. P. Tracy 1903-5-23 1905 Humboldt Alder Point Eel River 91 Comment
  UC1145039  Achnatherum lemmonii Joseph P. Tracy 1938-6-17 15968 Humboldt on road from Bull Creek to Upper Mattole (Panther Gap); Panther Gap 822 Comment
  UC180228  Achnatherum lemmonii Joseph P. Tracy 1913-5-4 4047 Humboldt Kneeland Prairie North Coast Ranges, Kneeland Prairie 762 Comment
  UC187245  Achnatherum lemmonii Joseph P. Tracy Jul 27 1908-Jul 30 1908 2707 Humboldt opposite Buck Mountain; Northern Coast Ranges, valley of Van Duzen River 762 Comment
  UC34152  Achnatherum lemmonii Joseph Burtt Davy 1899-6-8 5348 Humboldt Harris Comment
  UCD50519  Achnatherum lemmonii Joseph P. Tracy 1951-6-26 19563 Humboldt Halfway between Snow Camp and Twin Lakes (at Preston's old gate near road). Humboldt County. Comment
  RSA167312  Achyrachaena mollis Joseph P. Tracy 1948-6-13 18054 Humboldt Grassy slopes near Harris Comment
  HSC40403  Acmispon micranthus Linda M. Barker 1976-5-13 1493 Humboldt Lanphere-Christensen Dunes; 3 mi. W of Arcata Comment
  HSC48617  Acmispon micranthus Mark Flippo 1978-5-31 96 Humboldt Mckinleyville, Bella Vista Rd. Comment
  HSC98309  Acmispon micranthus William J. Ferlatte 1963-5-17 50 Humboldt Waste place, near 11th and B St., Arcata Comment
  UCD104321  Acmispon parviflorus P. B. Kennedy 1929-6-12 s.n. Humboldt Around Eureka. Comment
  HSC90187  Acmispon wrangelianus Jean Hanson 1980-5-24 54 Humboldt Indian (Gunther) Island, in Humboldt Bay, city of Eureka. W end of island Comment
  UC668267  Aconitum columbianum Joseph P. Tracy 1937-8-12 15661 Humboldt Snow Camp 1402 Comment
  CAS-BOT-BC391411  Aconitum columbianum subsp. columbianum Joseph P. Tracy 1937-8-12 15661 Humboldt Snow Camp 1402 Comment
  CAS-BOT-BC391410  Aconitum columbianum subsp. columbianum Joseph P. Tracy 1932-7-10 10393 Humboldt Klamath Mountains, Trinity Summit. Meadow at Corral Prairie 1524 Comment
  UC1196185  Actaea rubra Joseph P. Tracy 1937-7-2 15410 Humboldt head of Little Hors-Linto Creek; Trinity Summit 1371 Comment
  UC502922  Actaea rubra Joseph P. Tracy 1932-7-17 10690 Humboldt Devil's Hole Klamath Mts., Trinity Summit (head) 1828 Comment
  UC164786  Adenocaulon bicolor J. P. Tracy 1900-7-22 904 Humboldt immediate vicinity Eureka 0 Comment
  HSC956  Adiantum aleuticum H. E. Parks, S. T. Parks May 1930 749 Humboldt Along Van Duzen River Comment
  HSC948  Adiantum aleuticum W. R. Supernaugh, Jr. 1964-12-4 12 Humboldt Along rd. to Jolly Giant Reservoir Comment
  POM347034  Adiantum aleuticum Lyman Benson 1928-7-13 487 Humboldt Weatt Ranger Station 61 Comment
  SEINET11719536  Adiantum aleuticum F. H. Utech, Sato, T.; Ohara, M. 1990-1 90 -309 Humboldt Six Rivers National Forest, 0.5 mi S of CA 199 on French Hill Rd (USFS Rd 411) 150 Comment
  HSC100384  Adiantum emarginatum Carl C. Marshall Jun 1887 429 Humboldt Jewett Creek. Comment
  CAS-BOT-BC202609  Aesculus californica Joseph P. Tracy 1937-6-20 15357 Humboldt Bear River, ten miles up stream from the mouth 152 Comment
  UC1199008  Aesculus californica Joseph P. Tracy 1938-6-9 15873 Humboldt Dobbyn Creek 152 Comment
  UC249587  Aesculus californica Joseph P. Tracy 1921-10-22 5978 Humboldt Bridgeville; Northern Coast Ranges 304 Comment
  SEINET12232136  Aesculus californica J. P. Tracy 1950-1 18847 Humboldt Petrolia Comment
  HSC58330  Agastache urticifolia Overton, Butler 1979-8-2 12630 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  CAS-BOT-BC30384  Ageratina occidentalis Henry M. Pollard 1948-7-28 s.n. Humboldt Near Orleans Comment
  JEPS36258  Agoseris grandiflora Milo S. Baker 1923-7-20 66 Humboldt 15 mi e, at Redwood house on Yager Road Hydesville Comment
  UC1199116  Agoseris grandiflora var. grandiflora Joseph P. Tracy 1930-7-27 8899 Humboldt Bear River Ridge Northern Coast Ranges, Bear River Ridge 609 Comment
  UC582757  Agoseris grandiflora var. leptophylla Joseph P. Tracy 1930-7-23 9134 Humboldt s of summit Horse Mt. 1432 Comment
  UC582748  Agoseris heterophylla var. heterophylla Joseph P. Tracy 1930-6-21 8775 A Humboldt Larrabee Valley; Northern Coast Ranges 701 Comment
  UC1199483  Agoseris heterophylla var. heterophylla Joseph P. Tracy Jul 16 1930-Jul 19 1930 9045 Humboldt near, in open glades along summit Blake lookout; Northern Coast Ranges, South Fork Mountain 1737 Comment
  UC1199484  Agoseris heterophylla var. heterophylla Joseph P. Tracy 1927-5-14 8030 C Humboldt at Willow Creek; Trinity River Valley 152 Comment
  UC249886  Agoseris hirsuta Joseph P. Tracy 1923-6-18 6283 Humboldt Bear River Ridge Northern Coast Ranges, Bear River Ridge 304 Comment
  HSC73664  Agoseris retrorsa M. A. Baker 1980-7-15 2967 Humboldt Near Whiting Ridge. 1341 Comment
  CAS-BOT-BC127521  Agrostis capillaris Stuart K. Harris 1959-7-10 19935 Humboldt Fortuna. Grounds Redwood Hospital. Comment
  CAS-BOT-BC127280  Agrostis exarata Joseph P. Tracy 1934-7-2 13296 Humboldt Trinidad. 60 Comment
  HSC8785  Agrostis exarata D. E. Anderson 1961-8-25 1743 Humboldt Beach area 1.5 miles S of Trinidad. Comment
  POM247142  Agrostis exarata H. E. Parks 1935-06 5607 Humboldt Spruce Cove, Trinidad. Comment
  UC1103379  Agrostis exarata Joseph P. Tracy 1935-7-25 14232 Humboldt McKay Prairie Trinity Summit, McKay Prairie 1584 Comment
  UC1145061  Agrostis exarata Harold E. Parks and Joseph P. Tracy 1941-7-5 11489 Humboldt Coon Creek, east side of Trinity River below Willow Cr. 152 Comment
  UC176586  Agrostis exarata J. P. Tracy 1900-9-2 933 Humboldt Immediate vicinity of Eureka 0 Comment
  UC526891  Agrostis exarata Joseph P. Tracy 1932-6-14 10145 Humboldt mountainside w mouth of South Fork of Trinity River; North Coast Ranges 609 Comment
  CAS-BOT-BC139694  Agrostis gigantea Joseph P. Tracy 1932-8-21 10363 Humboldt North Coast Ranges. Three Cabins. On lower western foothills of Chaparral Mountain. 457 Comment
  CAS-BOT-BC139697  Agrostis gigantea Joseph P. Tracy 1932-8-21 10363 Humboldt North Coast Ranges. Three Cabins. On lower western foothills on Chaparral Mountain. 457 Comment
  HSC64757  Agrostis hallii Bruce Gordon 1978-8-4 121 Humboldt Redwood National Park, about 0.15 mi. NW of junction of Bald Hills Rd. and K & K Rd., in Lyon's Prairie. 774 Comment
  HSC74861  Agrostis hallii Gail Newton 1981-8-5 2363 Humboldt Near Bug Creek, E Fork. 820 Comment
  UCD52555  Agrostis hallii P. B. Kennedy 1929-6-14 308 Humboldt Humboldt County. Comment
  UCD52719  Agrostis hallii Joseph P. Tracy 1938-7-4 15983 Humboldt valley of South Yager Creek. 762 Comment
  RSA10064  Agrostis humilis Joseph P. Tracy 1930-7-16 8989 Humboldt South Fork Mountain: at McKay Camp 1677 Comment
  CHSC114091  Agrostis idahoensis Jennifer Buck; Danielle Roach 2009-8-19 SFM 06 C Humboldt Kerlin Fen, South Fork Mountain; UTM Zone 10N, 453899E, 4494304N. 1633 Comment
  HSC1799  Agrostis oregonensis William J. Ferlatte, B. D. Rogers 1966-8-15 3124 Humboldt 6 mi. E of Korbel; Cutoff Red wood Comment
  UCD53145  Agrostis pallens R. Tofsrud 1948-1 s.n. Humboldt Clear Lake, road from Horse Mt. to Grouse Mt. 1371 Comment
  UC526873  Agrostis thurberiana Joseph P. Tracy Jul 16 1930-Jul 19 1930 8989 Humboldt McKay Camp Northern Coast Ranges, South Fork Mountain 1676 Comment
  HSC104460  Aira caryophyllea Jeff Barrett 2009-4-1 Humboldt Samoa Peninsula, Fairhaven, along south side of Bay Street 5 Comment
  HSC8871  Aira praecox R. J. Vernimen 1963-4-27 35 Humboldt 0.5 mi. off Samoa Blvd. behind Georgia-Pacific dump, 7.5 mi. SW of Arcata Comment
  UC526678  Aira praecox Joseph P. Tracy 1925-6-13 7099 Humboldt Eureka Northern Coast Ranges 0 Comment
  RSA90195  Aira praecox Joseph P. Tracy 1925-3-24 11669 Humboldt Eureka, North Coast Range. Comment
  HSC2886  Alisma triviale Rollin Sparrowe 1962-5-16 23 Humboldt S of road Comment
  UC1198190  Allium acuminatum Joseph P. Tracy 1911-7-11 3511 Humboldt hills near mouth of Supply Creek; Northern Coast Ranges, Hoopa Valley 182 Comment
  SEINET12045750  Allium amplectens C. C. Harris, Harris, S. K. 1936-1 645 Humboldt at point where the road from Bridgeville to Dinsmore crosses the Little Van Duzen River 710 Comment
  HSC102616  Allium campanulatum M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-28 1603 Humboldt Slopes above Bret Hole and below trail 6E18, 1.5 km SSW of Trinity Summit. 1778 Comment
  HSC78654  Allium campanulatum D. K. Imper 1982-7-2 1490 Humboldt Near Connely Creek, N Fork 1493 Comment
  CHSC110705  Allium falcifolium Dean Wm. Taylor 2004-6-24 19134 Humboldt Horse Mountain, along Titlow Hill Road 0.4 miles north from the junction with the road to the mountain summit; Grouse Mountain. 1310 Comment
  HSC43977  Allium falcifolium B. Klipfel 1974-6-25 435 Humboldt Horse Mtn., near the towers Comment
  HSC74089  Allium falcifolium Gail Newton 1980-6-28 679 Humboldt Near Mad River Butte 1536 Comment
  CAS-BOT-BC469018  Allium falcifolium Doris K. Kildale 1926-6-9 2150 Humboldt Horse Mountain 1219 Comment
  HSC82040  Allium falcifolium Thomas W. Nelson, James Nelson 1980-6-10 5407 Humboldt Along Swayback Ridge 4-wheel drive rd. 2.5 mi. N of the junction with USFS rd. 1S07 1463 Comment
  UC666922  Allium unifolium Joseph P. Tracy 1935-6-8 13953 Humboldt along coast in front of South End of Stone Lagoon; Dry Lagoon 15 Comment
  CAS-BOT-BC476604  Allium unifolium Mrytle Paulson 1918-4-28 s.n. Humboldt Eureka Comment
  CAS-BOT-BC476628  Allium unifolium D E Breedlove 1961-7-3 642 Humboldt In dense grove of Sequoia sempervirens, along Eel River. 7.4 miles north of Phillipsville 243 Comment
  JEPS61518  Allium validum Hilda W. Grinnell 15 Humboldt upper corner of meadow below McKay Camp; South Fork Mountain Comment
  HSC63837  Allotropa virgata M. A. Baker 1979-6-26 905 Humboldt N side of ridge near summit Comment
  UC527556  Alnus incana subsp. tenuifolia C. B. Wolf 1931-8-28 2365 Humboldt Redwood Hwy 4 1/2 mi n Fortuna (on road to Eureka) 15 Comment
  SACT002769  Alnus oregona J. Clark 1972-4-22 Humboldt 26 miles north of Eureka on Highway 101. Roadwood Forest. Comment
  POM160903  Alnus rhombifolia Joseph P. Tracy 1923-10-14 6574 Humboldt North Dobbyn Creek. 152 Comment
  CAS-BOT-BC169542  Alnus rubra Carl B. Wolf 1930-10-26 1767 Humboldt SO edge of Bog Lagoon, near Redwood Highway Bridge 9 Comment
  LA204089  Alnus rubra C. B. Wolf; 1930-10-26 1767 Humboldt S edge of Big Lagoon, near Redwood Highway Bridge 9 Comment
  UCR142775  Alnus rubra H. E. Parks, S. T. Parks 1938-4-1 24126 Humboldt North Coast, Spruce Cove, Trinidad 61 Comment
  UCD55913  Alopecurus Joseph P. Tracy 1942-6-2 17096 Humboldt Alton. 30 Comment
  UC1145046  Alopecurus aequalis Joseph P. Tracy 1950-7-6 19019 Humboldt 3 mi. s. Burr Valley (Buck Mt., high meadow w. side,); Buck Mt. 1158 Comment
  UC526745  Alopecurus geniculatus Joseph P. Tracy 1926-6-12 7589 Humboldt Prairie Creek Northern Coast Ranges, Prairie Creek 152 Comment
  HSC8897  Alopecurus pratensis W. F. Cartwright 1965-4-22 60 Humboldt 2 mi. W of Arcata on Arcata bottoms Comment
  UC573793  Alopecurus pratensis H. L. Person 1932-5-11 Humboldt Redwood Hwy. between Arcata and Eureka; Eureka Quad. 0 Comment
  OBI22518  Alopecurus saccatus Joseph P. Tracy 1942-6-2 17096 Humboldt Alton Comment
  UCD55912  Alopecurus saccatus Joseph P. Tracy 1951-6-21 19525 Humboldt Hydesville, bed of former Goose Lake, back of Everett Beck house (formerly George Gray). Comment
  SEINET10473459  Ambrosia Mary Susan Taylor 1990-8-22 Taylor 6076 Humboldt Samoa Recreation Area on Samoa Peninsula, Staging Area, Eureka. Coastal scrub in ORV area. Comment
  RSA28766  Ambrosia chamissonis var. chamissonis H. E. Parks 1941-09 24214 Humboldt Mouth of Little River Comment
  HSC74335  Amelanchier alnifolia Gail Newton 1980-6-16 152 Humboldt Near Monks Camp 1097 Comment
  SEINET200733  Amelanchier alnifolia H. P. Chandler 1282 Humboldt Hoopa Valley IR ; Hupa [Hoopa Valley] Indian Reservation 1097 Comment
  HSC74216  Amelanchier alnifolia var. semiintegrifolia M. A. Baker 1980-7-23 3173 Humboldt Near Orleans Mtn. 1859 Comment
  HSC55995  Amelanchier pallida Overton, Butler 1979-7-31 11432 Humboldt Near Water Dog Lakes, close to the town of Hoopa 1830 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
  UCR32077  Amelanchier utahensis David J. Keil 1983-7-2 17332 Humboldt Horse Mountain Summit SW of Willow Creek 1509 Comment
  SEINET200930  Ammophila arenaria J. P. Tracy 1918-7-28 5087 Humboldt Humboldt Bay particularly Samoa Comment
  HSC3519  Amsinckia intermedia J. W. Johnson 1962-4-21 1286 Humboldt Arcata; William Lanphere Farm about building Comment
  HSC12709  Anagallis arvensis Jana Kattenhorn 1970-10-28 147 Humboldt Mad River at the mouth of Lindsey Creek, N Bank Rd. off Hwy. 299 Comment
  HSC17826  Anagallis arvensis C. Haley 1937-9-22 Humboldt Elk River Comment
  HSC96542  Anagallis arvensis Gordon Leppig 1997-8-13 646 Humboldt Big Lagoon County Park 3 Comment
  HSC69754  Anaphalis margaritacea Thomas W. Nelson 1977-9-22 3753 Humboldt At turnoff to Arcata Redwood Co. Comment
  JEPS20438  Anaphalis margaritacea W. L. Jepson 1932-8-9 16537 Humboldt Bull Creek 106 Comment
  UC582521  Anaphalis margaritacea Joseph P. Tracy Jul 16 1930-Jul 19 1930 9060 Humboldt near Blake Lookout; Northern Coast Ranges, South Fork Mountain 1737 Comment
  SEINET2031091 Image available Anaphalis margaritacea Joseph P. Tracy 5244 Humboldt Trinity Summit. Corral meadow 1520 Comment
  CAS-BOT-BC391771  Anemone deltoidea Elizabeth Parsons Hawver 1915-6-1 s.n. Humboldt Carlotta Comment
  HSC41238  Anemone oregana var. oregana Brad Klipfel 1974-5-27 376 Humboldt Horse Mountain Comment
  UC562611  Angelica arguta Joseph P. Tracy 1932-7-12 10443 Humboldt Trinity Summit, at Corral Prairie Corral Prairie; Trinity Summit, Corral Prairie 1584 Comment
  CAS-BOT-BC221420  Angelica hendersonii Carl B. Wolf 1937-9-9 9304 Humboldt Coast, 2 mi. So. of Cape Mendocino 6 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
  UC126727  Angelica lucida John Matthiesen 1908-8-17 Humboldt Loleta Comment
  UC153950  Angelica lucida Joseph P. Tracy 1910-6-5 3153 Humboldt Region about Humboldt Bay (near Samoa, Northern Coast Region); Northern Coast Region 0 Comment
  HSC99547  Angelica tomentosa K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-8-10 212 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-BC271496  Anisocarpus madioides Volney Rattan 1878-1-1 s.n. Humboldt Unspecified Comment
  HSC22864  Anisocarpus madioides D. E. Anderson 1965-5-8 3640 Humboldt About 2 mi. N of Willow Creek on road running along E side of Trinity River Comment
  HSC70410  Anisocarpus madioides M. A. Baker 1980-6-7 1831 Humboldt Near Ammon Creek 732 Comment
  HSC56990  Antennaria suffrutescens Overton, Butler 1979-7-24 9553 Humboldt Near Titlow Hill, close to the town of Willow Creek 1097 Comment
  CAS-BOT-BC84720  Anthemis cotula Carl D. Duncan 1920-9-22 s.n. Humboldt Hoopa Valley Comment
  CAS-BOT-BC137779  Anthoxanthum aristatum K. L. Chambers 1984-6-16 5150 Humboldt Bald Hills Road, 7.0 miles past Lady Bird Johnson Grove, Redwood National Park, east of Orick. Comment
  HSC38077  Anthoxanthum occidentale Thomas Nelson, James Nelson 1976-5-30 2630 Humboldt McKeown Ranch, N of Dinsmore Comment
  CAS-BOT-BC137743  Anthoxanthum odoratum David D. Keck 1948-7-1 5968 Humboldt Trinidad. Comment
  HSC96543  Anthoxanthum odoratum Gordon Leppig 1997-8-3 647 Humboldt Big Lagoon County Park, Big Lagoon Bog. 3 Comment
  RSA10084  Anthoxanthum odoratum Joseph P. Tracy 1925-7-5 7164 Humboldt High Prairie, on Bald Mountain. 1067 Comment
  UC1159497  Anthoxanthum odoratum D. L. Gray 1964-5-14 ARCA 64001 Humboldt Humboldt County 18 Comment
  UCD56278  Anthoxanthum odoratum H. E. Parks; S. T. Parks 1952-4 24444 Humboldt Trinidad, Spruce Cove. 60 Comment
  UC1197334  Anthriscus caucalis Mrs. C. M. Wilder 1933-6-7 Humboldt Carlotta; near Beckwith Mill 60 Comment
  RSA425833  Antirrhinum vexillocalyculatum subsp. breweri T. A. Bonser 1931-7-14 14970 Humboldt Garberville. Comment
  UC582468  Antirrhinum vexillocalyculatum subsp. breweri Joseph P. Tracy 1936-6-27 16003 Humboldt Miranda 91 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
  HSC58233  Apocynum androsaemifolium Walter Overton 1979-8-1 12388 Humboldt Near Mill Creek, Middle Fork, close to the town of Hoopa. 1341 Comment
  HSC97622  Apocynum androsaemifolium Cara Witte 2007-6-19 301 Humboldt Cold Spring. 1/2 mile south of Titlow Hill. 1393 Comment
  HSC40992  Apocynum androsaemifolium Thomas W. Nelson, Jane P. Nelson 1977-9-3 3730 Humboldt N of pond above Alder Springs 1616 Comment
  UC176867  Apocynum cannabinum Joseph P. Tracy 1912-7-26 3838 Humboldt Kneeland Prairie North Coast Ranges, Kneeland Prairie 762 Comment
  HSC102054  Aquilegia formosa M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-13 959 Humboldt Forest edge surrounding Patterson Meadows 1566 Comment
  RSA46787  Aquilegia formosa Doris Kildale Gillespie 1937-8-12 15265 Humboldt South Fork Mountain. Comment
  UC162631  Aquilegia formosa Joseph P. Tracy 1911-7-6 3337 Humboldt between Three Creeks and mouth of Willow Creek Northern Coast Ranges Comment
  HSC76368  Arabis breweri var. breweri Denis Kearns 1981-7-21 293 Humboldt Near Whiteys Peak 1585 Comment
  HSC71084  Arabis glabra M. A. Baker 1980-5-23 1389 Humboldt Near Buck Mtn. 1524 Comment
  HSC57318  Arabis holboellii var. retrofracta G. L. Clifton, Terry Griswold 1979-7-26 9373 Humboldt Near Salmon Mtn., close to the town of Forks of Salmon 1935 Comment
  UC902020  Arabis subpinnatifida Joseph P. Tracy 1949-7-19 18389 Humboldt Grouse Mountain 1584 Comment
  SDSU2557  Aralia californica Harvey 1938-8-13 2247 Humboldt Humbolt State Redwood Park. Comment
  HSC79369  Arbutus menziesii Kenneth Clark 1980-11-28 1050 Humboldt Above Point No Pass 488 Comment
  JEPS120247  Arceuthobium campylopodum Talitha Derksen and Keli McElroy 2012-8-2 Humboldt East slope of Blake Mountain, north end South Fork Mountain, 5 mi. west of Hyampom Comment
  UC1198125  Arceuthobium campylopodum J. P. Tracy 1901-6-26 1060 Humboldt on Humboldt HIll Eureka vicinity 0 Comment
  SEINET11853818  Arctium minus J. P. Tracy 1950-1 19351 Humboldt Occasional at Beatrice, 3 mi S of Field's Landing Comment
  UC585947  Arctostaphylos Joseph P. Tracy 1934-3-11 13154 Humboldt French Camp Ridge 1066 Comment
  HSC55002  Arctostaphylos X cinerea Overton, Butler 1979-7-23 9522 Humboldt Near Titlow Hill, close to the town of Willow Creek. 1280 Comment
  SDSU1488  Arctostaphylos canescens D. F. Howe 1965-8-12 4129 Humboldt 7.9 miles south of Honeydew. 610 Comment
  CAS-BOT-BC24093  Arctostaphylos canescens subsp. canescens Carl B. Wolf 1937-9-13 9335 Humboldt North Coast range Horse Mt. 1524 Comment
  CAS-BOT-BC25210  Arctostaphylos canescens subsp. canescens J. P. Tracy 1941-4-8 16850 Humboldt Willow Creek Canyon, along Trinity Highway Comment
  OBI33905  Arctostaphylos canescens subsp. sonomensis David J. Keil 1983-7-2 17321 Humboldt Ca. 4 mi SE of SR 299 along Titlow Hill rd below Horse Mountain Summit rd Comment
  RSA47097  Arctostaphylos cinerea Doris K. Kildale 1926-4-4 1721 Humboldt Hulbdt County: Northern end of county at Del Norte line, Bluff between Redwood high & ocean Comment
  CAS-BOT-BC23729  Arctostaphylos columbiana Joseph P. Tracy 1934-3-11 13152 Humboldt French Camp Ridge 1066 Comment
  CAS-BOT-BC23730  Arctostaphylos columbiana Joseph P. Tracy 1937-7-17 15439 Humboldt Eureka 45 Comment
  CAS-BOT-BC23759  Arctostaphylos columbiana Alice Eastwood 1907-4-22 41 Humboldt Near Trinidad Comment
  CAS-BOT-BC23794  Arctostaphylos columbiana C. Hart Merriam 1920-9-18 s.n. Humboldt Berry Mt. between Trinity River and Redwood Creek Comment
  RSA622694  Arctostaphylos columbiana Jon E. Keeley, John Sawyer 1996-10-12 27668 Humboldt Along Highway 101 at edge of cutover redwood forest, 6 km south of Drury Scenic Parkway and Prairie Creek Redwoods State Park, north of Eureka. 320 Comment
  UC1174844  Arctostaphylos columbiana P. C. Everett and E. K. Balls 1959-10-26 23975 Humboldt 4 mi se from Honeydew (along old Coast Road to Ettersburg) 457 Comment
  UC1198653  Arctostaphylos columbiana Joseph P. Tracy 1934-2-22 13133 Humboldt vicinity of Trinidad Northern Coast Region 60 Comment
  UC314644  Arctostaphylos columbiana Joseph P. Tracy 1924-3-9 6606 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  CAS-BOT-BC23737  Arctostaphylos columbiana C. Hart Merriam 1921-7-7 s.n. Humboldt Van duzen - Mad River ridge Comment
  RSA252144  Arctostaphylos columbiana var. tracyi Gary D. Wallace 1974-12-22 1345 Humboldt Near coast N of Trinidad at the edge of the W part of Big Lagoon. 61 Comment
  SEINET11984882  Arctostaphylos glandulosa Unknown 1965-1 545 Humboldt 6.5 mi W on Kings Mountain Rd, Pacific Range Wilderness Area Comment
  CAS-BOT-BC24776  Arctostaphylos glandulosa subsp. glandulosa Doris K. Kildale 1927-2-20 2956 Humboldt McDowell Buttes. 914 Comment
  CAS-BOT-BC24825  Arctostaphylos glandulosa subsp. glandulosa Joseph P. Tracy 1940-7-14 16689 Humboldt Wilder Ridge (near Kings Peak). 762 Comment
  UC585935  Arctostaphylos glandulosa subsp. glandulosa Joseph P. Tracy 1934-7-9 13332 Humboldt ridge 5 mi s Harris (on the road towards Bell Springs); North Coast Regions 762 Comment
  CAS-BOT-BC24371  Arctostaphylos manzanita subsp. manzanita Doris K. Kildale 1927-3-10 2993 Humboldt Dobbyns Creek. Comment
  UC1198679  Arctostaphylos manzanita subsp. manzanita Joseph P. Tracy 1937-7-11 15417 Humboldt vicinity of Garberville 121 Comment
  HSC102569  Arctostaphylos nevadensis M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-29 1556 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1579 Comment
  CAS-BOT-BC40028  Arctostaphylos nevadensis subsp. knightii Joseph P. Tracy 1934-3-11 13155 Humboldt French Camp Ridge 1066 Comment
  CAS-BOT-BC40075  Arctostaphylos nevadensis subsp. knightii Joseph P. Tracy 1933-8-6 12958 Humboldt French Camp Ridge 1066 Comment
  HSC63208  Arctostaphylos patula M. A. Baker 1979-6-6 1010 Humboldt .6 k W of FS Rd. 15N01 on FS Rd. 12N16, towards Bald Mtn. Comment
  CAS-BOT-BC43984  Arctostaphylos uva-ursi Joseph P. Tracy 1945-3-30 17500 Humboldt Eureka 45 Comment
  CAS-BOT-BC47209  Arctostaphylos uva-ursi Doris K. Kildale 1926-6-18 2395 Humboldt Gold Bluffs. Comment
  CAS-BOT-BC47216  Arctostaphylos uva-ursi Joseph P. Tracy 1940-10-3 s.n. Humboldt Near Samoa, on Humboldt Bay. 6 Comment
  HSC12226  Arctostaphylos uva-ursi Gary J. Stebbins 1970-4-18 68 Humboldt Along road to Samoa 1.1 mi. S of Mad River slough bridge Comment
  HSC77903  Arctostaphylos uva-ursi L. P. Janeway 1984-5-16 799 Humboldt N Spit of Humboldt Bay, on the W side of Samoa Road ca. 1/4 mi. NW of the boat ramp 5 Comment
  SEINET3106998  Arctostaphylos uva-ursi Steve Selva, Roger Jensen 1974-8-28 91 Humboldt Approx 5 mi S of Arcata on the sand dunes of the Samoa Peninsula. Comment
  UCD52032  Arctostaphylos uva-ursi Joseph P. Tracy 1940-10-3 16740 Humboldt Near Samoa, on Humboldt Bay. Comment
  SEINET11984848  Arctostaphylos uva-ursi Unknown 1965-1 555 Humboldt 1.3 mi S of Samoa, Samoa Peninsula Comment
  HSC73249  Arctostaphylos viscida M. A. Baker 1980-5-18 1313 Humboldt Near Black Mtn. 1006 Comment
  UCD129122  Arctotheca calendula G. D. Barbe 1988-7-18 4293 Humboldt Larry Pries dairy, 3.4 miles west of Main Street, on Centerville Beach Road, Ferndale. Comment
  CAS-BOT-BC64580  Armeria maritima subsp. californica Joseph P. Tracy 1927-6-8 8115 Humboldt Trinidad. 60 Comment
  HSC59482  Armeria maritima subsp. californica M. A. Ericksen 1979-4-29 243 Humboldt 0.4 mi. N of Coast Guard Station, Samoa Peninsula. Comment
  CAS-BOT-BC82101  Arnica cernua Joseph P. Tracy 1926-5-2 s.n. Humboldt Willow Creek Canyon Comment
  HSC81874  Arnica cernua Barry Silver 1986-4-13 513 Humboldt Bair Road, 6.4 mi. WSW of Hoopa Comment
  UC302176  Arnica cernua Joseph P. Tracy 1926-5-2 7449 Humboldt near Ruby Creek; Northern Coast Ranges, Willow Creek Canyon 609 Comment
Read comments
Feb 27 2007
  UC582488  Arnica cordifolia Joseph P. Tracy 1935-7-30 14372 Humboldt top of ridge s of Red Cap Lake; Salmon Summit 2011 Comment
  HSC49998  Arnica discoidea M. A. Baker 1979-6-7 790 Humboldt W slope of Snow Mtn. 762 Comment
  UC129316  Arnica discoidea Joseph Burtt Davy and Walter C. Blasdale 1899-7-19 5668 Humboldt Hoopa Mt. North-Western California, Hoopa Mt. Comment
  SEINET11837491  Arnica tomentella J. P. Tracey 1950-1 19273 Humboldt 2 mi E of town, on trail to Croghan Hole. Trinity Summit, near Box Camp 1524 Comment
  HSC48525  Arrhenatherum elatius Thomas W. Nelson, Jane P. Nelson 1978-7-3 4412 Humboldt McKeown Ranch, N of Dinsmore Comment
  SEINET201067  Artemisia dracunculus Joseph P. Tracy 1916-9-5 Humboldt Humboldt County: South fork of eel river 4 miles above the mouth. Comment
  CAS-BOT-BC90867  Artemisia pycnocephala H. E. Parks 1941-8-1 24186 Humboldt Little River State Park Comment
  OBI17056  Artemisia pycnocephala Carl B. Wolf 1940-11-10 9782 Humboldt Coast S of Mendocino-1/8 mi N of Where rd turns inland to Petrolia Comment
  UC1409182  Artemisia pycnocephala Robert F. Thorne and P. Everett 1965-8-5 35169 Humboldt Samoa Dunes 3 Comment
  SEINET8734625 Image available Artemisia pycnocephala H. E. Parks, S. T. Parks 1952-1 24495 Humboldt Samoa Comment
  CAS-BOT-BC97244  Artemisia suksdorfii A. A. Heller 1924-7-25 13844 Humboldt near the beach at Agate Beach near Trinidad Comment
  HSC93258  Arum palaestinum Gordon Leppig 1998-5-8 755 Humboldt Arcata Marsh and Wildlife Sanctuary, Butchers Slough, 50 m W of Interpretive Center Comment
  HSC100257  Arundo donax J. P. Smith 2009-8-3 12642 Humboldt Along Hwy. 254 in Pepperwood. 51 Comment
  RSA261553  Asarum caudatum Suzanne May 1967-4-15 21 Humboldt On Kneeland Road, 5 miles east of Bridgeville 244 Comment
  UCD15240  Asarum caudatum Glen Greenleaf 1974-4-10 13 Humboldt along highway 36, 10.8 miles east of Hydesville on south side of road. 140 Comment
  HSC99398  Asarum hartwegii K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-6-28 47 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  UC162718  Asclepias cordifolia Joseph P. Tracy 1911-7-9 3477 Humboldt near Willow Creek (hill slopes at w side of river); Northern Coast Ranges, Trinity River 182 Comment
  HSC56338  Asclepias speciosa Griswold, Butler 1979-7-10 6223 Humboldt Near Kinsey Ridge, close to the town of Willow Creek 1244 Comment
  CAS-BOT-BC65943  Aspidotis densa L. B. Kildale 1930-6-1 9764 Humboldt Klamath River at Bluff Creek Comment
  UC197913  Aspidotis densa Joseph P. Tracy 1912-7-26 3849 Humboldt Kneeland Prairie; Northern Coast Ranges 762 Comment
  UC302329  Aspidotis densa Charlotte M. Wilder 1912-10-1 Humboldt ca. 6 mi above Kuntz P.O. (Upper Van Duzen River) 914 Comment
  UCR51819  Aster occidentalis var. occidentalis Thomas W. Nelson, J. Nelson 1977-9-3 3726 Humboldt Along creek draining north from pond above Alder Spring 1445 Comment
  HSC95164  Astragalus agnicidus Gordon Leppig 2003-7-10 2002 Humboldt Pacific Lumber Co. land 730 Comment
  CAS-BOT-BC200853  Astragalus umbraticus Volney Rattan 1878-1-1 s.n. Humboldt Unspecified Comment
  HSC14595  Astragalus umbraticus D. E. Anderson 1963-9-29 2851 Humboldt Fish Lake. Comment
  HSC76042  Asyneuma prenanthoides Overton, Butler 1979-8-2 12569 Humboldt Near Bret Hole, close to the town of Hoopa 1554 Comment
  HSC54545  Athyrium filix-femina var. cyclosorum Overton, Butler 1979-7-23 9532 Humboldt Near Titlow Hill, close to the town of Willow Creek. 1280 Comment
  HSC98974  Athyrium filix-femina var. cyclosorum Cara Witte 2007-8-9 626 Humboldt Grouse Mountain. Forest Service Road 5N04. Near spring. 1583 Comment
  UC1239780  Athyrium filix-femina var. cyclosorum Joseph P. Tracy 1932-7-20 10743 1/2 Humboldt Trinity Summit; Klamath Mts 1371 Comment
  UC197922  Athyrium filix-femina var. cyclosorum Joseph P. Tracy 1912-7-25 3814 Humboldt along Black Creek Kneeland Prairie; Northern Coast Ranges 762 Comment
  HSC6517  Athysanus pusillus D. E. Anderson 1963-5-19 2470 Humboldt Kneeland Area Comment
  UC162361  Atriplex gmelinii var. gmelinii Joseph P. Tracy 1911-11-5 3555 Humboldt near mouth Mad River Slough (region about Humboldt Bay); Northern Coast Region, Humboldt Bay, Mad River Slough 0 Comment
  HSC4341  Atriplex prostrata Jerry Parker 1968-10-7 102 Humboldt N of Mad River outlet. Comment
  CDA18213  Avena barbata G. D. Barbe, T. C. Fuller 1974-6-17 1841 Humboldt North Coast Ranges; Shelter Cove, uphill, E of Sail Court. 91 Comment
  UC181262  Avena barbata Joseph P. Tracy 1913-6-13 4114 Humboldt opposite Buck Mountain; Northern Coast Ranges, valley of Van Duzen River, Dinsmore's 762 Comment
  RSA10053  Avena fatua Joseph P. Tracy 1933-5-20 12229 Humboldt Cape Mendocino. Southwestern slopes, fronting the ocean, three miles south of point of the cape. Comment
  UC526702  Avena fatua Joseph P. Tracy 1930-6-29 8824 Humboldt Buck Mountain Northern Coast Ranges (lower foothills of nw slope) Comment
  UC526703  Avena fatua Joseph P. Tracy 1926-5-9 7457 Humboldt hills near Bridgeville; North Coast Ranges 609 Comment
  HSC933  Azolla microphylla H. E. Parks 1925-6-24 2763 Humboldt Eureka, Comment
  JEPS31855  Bellis perennis Lincoln Constance 1934-6-3 800 Humboldt North Dyerville Flat South Fork Eel River Comment
  CAS-BOT-BC106393  Bellis perennis Ynez Whilton Winblad 1941-5-27 s.n. Humboldt Between Eureka and Orick Comment
  RSA46859  Berberis aquifolium Doris K. Kildale 1926-6-27 s.n. Humboldt Little Van Duyen River on bridge on Bridgeville Red Bluff road. 640 Comment
  UC1198388  Berberis aquifolium Joseph P. Tracy 1924-4-27 6641 Humboldt along hwy near Ruby Creek Willow Creek 609 Comment
  BLMAR722  Berberis aquifolium var. repens Jennifer Wheeler 2014-4-9 722 Humboldt Lacks Creek, Along Pine Ridge Rd 1091 Comment
  CAS-BOT-BC75682  Berberis nervosa C. B. Wolf 1931-8-29 2372 Humboldt Near summit of Orick Hill on the road to Weitchpec. 304 Comment
  SEINET11861631  Bidens frondosa J. P. Tracy 1950-9-22 19367 Humboldt Klamath River, near Slate Creek below Orleans 8 mi 122 Comment
  JEPS53081  Boechera retrofracta H. P. Chandler Jun 1901 1511 Humboldt Klamath River Comment
  RSA465618  Boisduvalia densiflora var. densiflora H. M. Pollard 1948-8-12 s.n. Humboldt Near Orleans. Comment
  CHSC96445  Bolboschoenus maritimus subsp. paludosus Gordon Leppig 1999-10-25 1268 Humboldt State Highway 101, mile marker 61.40. UTM zone 10, 4519N, 406 E. 2 Comment
  UC1198853  Boykinia occidentalis Joseph P. Tracy 1927-6-19 8191 Humboldt Big Lagoon; Northern Coast Region, Big Lagoon 6 Comment
  UC1409117  Boykinia occidentalis Robert F. Thorne and P. Everett 1965-8-5 35127 a Humboldt Wailaki Recreation Site 518 Comment
  SEINET12215472  Boykinia occidentalis H. P. Chandler 1901-1 1501 Humboldt Klamath River - North Coast Ranges 427 Comment
  UCSB23762  Boykinia occidentalis Breedlove, Dennis 1962-6-8 Humboldt Along U.S. Highway 101; 8 miles north of Orick; 60 Comment
  SEINET12012990  Brassica juncea M. A. Lane 1990-3-20 3296 Humboldt below US 101 & above Benbow Drive to Benbow Lake State Recreation Area Comment
  CDA14234  Brassica rapa R. Spadoni 1998-5-11 s.n. Humboldt Hwy 299 near Blue Lake. 0 Comment
  HSC6584  Brassica rapa Richard Steele 1962-2-25 2 Humboldt Arcata, 0.5 mi. W of HSU campus 15 Comment
  CAS-BOT-BC106291  Brickellia californica Doris K. Kildale 1925-9-26 1367 Humboldt Mouth of Mad River in coast. Comment
  HSC32526  Brickellia californica Thomas W. Nelson 1973-9-3 1135 Humboldt McKeown Ranch N of Dinsmore Comment
  JEPS18641  Brickellia californica Joseph P. Tracy 1931-10-18 9736 Humboldt 2 to 5 mi e of the South Fork, along Eel River South Fork Eel River (Camp Grant); Eel River 45 Comment
  HSC69631  Briza maxima R. Kalal 1980-6-3 28 Humboldt 0.25 mi. N of Hwy. 299 at Essex turnoff 15 Comment
  UC1145095  Briza maxima Joseph P. Tracy 1942-5-16 17358 Humboldt on bench 1 mi ne Garberville 304 Comment
  HSC9087  Briza maxima T. M. Mingo May 1965 Humboldt 0.25 mi. N of intersection of Fairhaven Dr. and old Hwy. 101 Comment
  SEINET3884856  Brodiaea elegans Jan G. Cooper 1976-8-2 6 Humboldt Along road to Horse Mountain Ski Area turnoff of Hwy 299.; 0 Comment
  UC1197741  Brodiaea elegans subsp. elegans Joseph P. Tracy 1930-6-21 8776 Humboldt Larrabee Valley 731 Comment
  UC1442888  Brodiaea elegans subsp. elegans Theodore F. Niehaus 1965-6-8 566 Humboldt along Glory road 1.7 mi sw Alderpoint Comment
  JEPS5498  Brodiaea stellaris Joseph P. Tracy 1925-5-30 7024 Humboldt on grassy slopes Northern Coast Ranges, McClellan Mountain 822 Comment
  SBBG53059  Bromus R. N. Philbrick, J. R. Haller 1976-6-25 5 Humboldt Capetown-Ferndale Rd, NW of Cape Mendocino, ca. 4 mi NW of Bear River at Capetown 457 Comment
  SEINET11675365  Bromus carinatus J. P. Tracy 1951-1 19569 Humboldt Snow Camp-Twin Lakes vicinity Comment
  HSC97612  Bromus carinatus var. carinatus Cara Witte 2007-6-4 198 Humboldt Cold Spring. 0.5 mile S of Titlow Hill. 1386 Comment
  UC180489  Bromus carinatus var. carinatus Joseph P. Tracy 1914-5-14 4447 Humboldt Fort Seward 121 Comment
  UC180492  Bromus carinatus var. carinatus Joseph P. Tracy 1913-6-22 4274 Humboldt opposite Buck Mountain (in Valley of Van Duzen River, Dinsmore's Ranch); Northern Coast Ranges, Dinsmore's Ranch 762 Comment
  HSC102641  Bromus carinatus var. marginatus M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-29 1625 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1579 Comment
  UCD59147  Bromus carinatus var. marginatus A. H. Shunk 1923-7-21 s.n. Humboldt Bridgeville. 328 Customs House. Comment
  CDA18212  Bromus carinatus var. maritimus G. D. Barbe, T. C. Fuller 1974-6-17 1840 Humboldt North Coast Ranges; Shelter Cove, uphill, E of Sail Court. 91 Comment
  HSC26616  Bromus commutatus J. P. Smith, Steve Selva 1970-6-14 3826 Humboldt Along Hwy. 96 at Whitmore Creek. 152 Comment
  UC1145143  Bromus commutatus Joseph P. Tracy 1917-6-24 4824 Humboldt along Eel River from South Fork to Scotia, Holmes Flat Holmes Flat; Northern Coast Ranges, Eel River, Holmes Flat 60 Comment
  UCD58449  Bromus commutatus Joseph P. Tracy 1942-6-15 17130 Humboldt Englewood. 91 Comment
  HSC9271  Bromus diandrus J. W. Johnson 1962-4-18 1268 Humboldt Along the lane below the W.M. Lanphere Home, Samoa Peninsula Comment
  HSC9297  Bromus diandrus J. R. Eichelberger 1964-5-3 46 Humboldt 2 mi. N of Fieldbrook Comment
  UC1714488  Bromus diandrus Joseph P. Tracy 1916-5-31 4702 Humboldt along Eel River from South Fork to Scotia, Stitz Creek Stitz Creek; Northern Coast Ranges, Eel River, Stitz Creek 60 Comment
  HSC90690  Bromus hordeaceus Gail Newton 1982-5-31 3554 Humboldt Elk River Wildlife Area, Eureka Comment
  UC34106  Bromus hordeaceus Joseph Burtt Davy and Walter C. Blasdale 1899-6-8 5349 a Humboldt Bells Spring; North-Western California, Bells Spring Comment
  SEINET11682985  Bromus hordeaceus K. S. Erdman 1970-1 4784 Humboldt Doleson Hill Prairie, Bald Hills Rd SE of Orick Comment
  SEINET200633 Image available Bromus sterilis Joseph P. Tracy 1921-5-30 5493 Humboldt Kneeland Prairie. Comment
  HSC54214  Bromus tectorum Griswold, Butler 1979-7-12 7264 Humboldt Near Cedar Creek, close to the town of Willow Creek 1158 Comment
  UC37724  Bromus tectorum Harley P. Chandler June, 1901 1432 Humboldt North Coast Ranges, Klamath River Klamath River; North Coast Ranges, Klamath River 335 Comment
  HSC58750  Bromus vulgaris Overton, Butler 1979-7-24 9617 Humboldt Near Titlow Hill, close to the town of Willow Creek 1250 Comment
  HSC9375  Bromus vulgaris D. E. Anderson 1965-9-5 4080 Humboldt Along Mad River, 3 mi. S of Blue Lake Comment
  UC1145187  Bromus vulgaris Joseph P. Tracy 1949-6-20 18317 Humboldt 6 mi se of Arcata (Fickle Hill); Fickle Hill 609 Comment
  UC180218  Bromus vulgaris Joseph P. Tracy 1913-6-21 4253 Humboldt opposite Buck Mountain (in Valley of Van Duzen River, Dinsmore's Ranch); Northern Coast Ranges, Dinsmore's Ranch 762 Comment
  UCD60237  Bromus vulgaris P. B. Kennedy 1923-8-2 s.n. Humboldt Bluff Creek, to Arcata. Comment
  UC709461  Cakile maritima Joseph P. Tracy 1941-8-3 16979 Humboldt w foot of Table Bluff Table Bluff 3 Comment
  UC37779  Calamagrostis foliosa H. N. Bolander 1866-6 6470 Humboldt Mattole District; bluffs along seashore; Mattole District, Humboldt Co. Comment
  UCD56952  Calamagrostis foliosa A. H. Murphy 1951-5-18 38 Humboldt approx. 1.5 mi. south of Petrolia at bridge corssing, along Mattole River. Comment
  SEINET10901893 Image available Calamagrostis foliosa Henry N. Bolander 1866-1 Bolander 6470 Humboldt Mattole district Comment
  HSC58660  Calamagrostis koelerioides Gilbert Muth 1979-8-1 11888 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1877 Comment
  HSC74184  Calamagrostis koelerioides M. A. Baker 1980-7-23 3140 Humboldt Near Orleans Mtn. 1859 Comment
  UC1103287  Calamagrostis nutkaensis Joseph P. Tracy 1918-7-21 5079 Humboldt Humboldt Hill Northern Coast Ranges, <area> around Humboldt Bay 182 Comment
  HSC17634  Calandrinia ciliata P. N. Slattery 1963-3-31 35 Humboldt Clam Beach Comment
  HSC17625  Calandrinia ciliata Francis Winter 1960-5-7 Humboldt French Camp Ridge, 3 mi. W of Burnt Ranch 671 Comment
  UC1922744  Callitriche heterophylla subsp. bolanderi Robert F. Thorne, P. Everett 1965-8-9 35345 Humboldt Along Hwy. 101 about 3 mi. N or Eureka. Comment
  RSA729025  Callitriche heterophylla var. bolanderi R. F. Thorne, P. C. Everett 1965-8-9 35323 Humboldt Clam Beach County Park: along highway. 3 Comment
  HSC3803  Callitriche trochlearis D. B. Bader 1963-4-1 42 Humboldt Second of the Clam Beach lagoons, W of Hwy. 101 Comment
  SEINET12051376  Calochortus coeruleus F. H. Utech, Sato, T.; Ohara, M. 1990-1 90 -315 Humboldt Six Rivers National Forest, 0.5 mi S of CA 199 on French Hill Road (USFS Rd. 411) 150 Comment
  CHSC32848  Calochortus tolmiei Lora L. Anderson 1981-4-25 11 Humboldt Ca. 1.5 mi ne of Redwood Creek 4.5 mi n of 299w 18 mi ne of Arcata. 228 Comment
  HSC44357  Calochortus tolmiei Brad Klipfel 1974-5-27 399 Humboldt Horse Mtn., ridge top near forks in rd. Comment
  UC502923  Caltha biflora Joseph P. Tracy 1932-7-17 10671 Humboldt Ridges east of Corral Prairie, Trinity Summit; Klamath Mountains. 1828 Comment
  SEINET3863989  Calycadenia fremontii G. D. Carr 1974-9-12 785 Humboldt 2.1 mi W of Hwy 299 on Friday Ridge Rd, ca 3.5 mi WSW of Salyer.; 0 458 Comment
  UC1971693  Calycadenia fremontii 1978-8-21 2158 Humboldt 2.1 mi W of Hwy 299 on Friday Ridge Road, ca. 3.5 mi WSW of Salyer, common at Burnt Woods, yellow form at Big Bar (W along cliffs), (=GDC 785) 458 Comment
  UC405402  Calycadenia truncata Chesnut and Drew 1888-7-28 Humboldt Comment
  HSC34523  Calypso bulbosa J. D. Ackerman 1975-5-3 442 Humboldt Just off Hwy. 299, 200 yds. E of Lord Ellis Summit, E of Blue Lake and W of Willow Creek and Redwood Creek 854 Comment
  HSC70954  Calypso bulbosa Thomas W. Nelson 1977-6-15 3429 Humboldt Along FS 6N01, just N of Clear Lake 1372 Comment
  SEINET12076826  Calypso bulbosa Unknown 1977-1 Humboldt Comment
  HSC32932  Calyptridium monospermum Thomas W. Nelson 1973-5-30 973 Humboldt Humboldt/Trinity Co. line, Mt. Lassic 1790 Comment
  RSA119358  Calystegia occidentalis subsp. occidentalis S. S. Tillett 1956-7-6 625 Humboldt 12.5 miles from Orleans, along Bar Shanty Road. 1174 Comment
  HSC23736  Calystegia purpurata Tim Baroni 1971-7-5 107 Humboldt 8 mi. E of Petrolia Comment
  RSA603171  Calystegia soldanella D. D. Keck, Jens Clausen 1935-6-16 3384 Humboldt Mouth of Little River. Comment
  UC1197668  Camassia quamash J. P. Tracy 1906-6-24 2509 Humboldt near Field's Landing (on s slope of Humboldt Hill); Humboldt Hill 30 Comment
  CAS-BOT-BC493385  Camassia quamash subsp. linearis Volney Rattan 1878-1-1 s.n. Humboldt unspecified Comment
  HSC16448  Camissonia cheiranthifolia R. E. Hafenfeld 1965-5-9 26 Humboldt 1/2 mi. S of Squashan Creek near Gold Bluff Beach Rd. Comment
  HSC59742  Camissonia cheiranthifolia Clark L. Miller 1979-5-9 7118 Humboldt Samoa Dunes W of Samoa Blvd. Comment
  LA206042  Camissoniopsis cheiranthifolia C. C. Harris; S. K. Harris 1939-8-23 sn Humboldt Samoa Comment
  OBI36380  Camissoniopsis cheiranthifolia David J. Keil 1983-7-1 17283 Humboldt Ca. 5 mi NW of Petrolia along mattole Rd Comment
  CAS-BOT-BC160243  Camissoniopsis cheiranthifolia subsp. cheiranthifolia Ira L. Wiggins 1930-7-7 4670 Humboldt Near Samoa Comment
  SEINET10462987  Campanula prenanthoides Vollmer VOLLMER 149 Humboldt On road to Bald Mountain, east of Korbel Comment
  UC583020  Campanula prenanthoides P. A. Munz 1936-8-10 14338 Humboldt 15 mi e Bridgeville; Little Van Duzen River Comment
  UC169062  Campanula scouleri Mrs. M. H. Manning July, 1901 305 Humboldt near Hupa; Bald Hills 457 Comment
  HSC98724  Campanula scouleri Cara Witte 2008-7-16 919 Humboldt Forest Service Road 4N38. At intersection to Board Camp Lookout. 1414 Comment
  SEINET10463759  Campanula scouleri Joseph P. Tracy 1937-7-25 Tracy 15560 Humboldt Happy Camp Mountain; in Trinity Summit Range, northeast of Hawkins Bar, moist bank. 1280 Comment
  UC1199216  Capsella bursa-pastoris Joseph P. Tracy 1940-10-15 16757 Humboldt Trinity River Valley, at Willow Creek Willow Creek; Trinity River Valley, Willow Creek 152 Comment
  HSC6629  Capsella bursa-pastoris S. J. Roberts 1965-4-8 11 Humboldt 0.5 mi. S of junction of Alliance Rd. and Hwy. 101 Comment
  UC492266  Capsella bursa-pastoris Joseph P. Tracy 1932-7-16 10649 Humboldt Corral Prairie; Klamath Mountains, Corral Prairie 1524 Comment
  HSC33178  Cardamine californica Thomas W. Nelson 1974-4-20 1184 Humboldt At Elk Head, N of Trinidad Comment
  UC1199200  Cardamine californica Joseph P. Tracy 1924-2-24 6603 Humboldt near McKee's Mill (South Fork Eel River); Northern Coast Ranges, South Fork Eel River 60 Comment
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Jul 25 2012
  UCD114499  Cardamine californica Parks; Tracy 1931-3-26 0916 Humboldt lower Van Duzen River. 60 Comment
  HSC39987  Cardamine oligosperma Linda M. Barker 1976-3-22 1338 Humboldt 3 mi. W of Arcata Comment
  HSC43205  Cardamine oligosperma R. Sutherland 1976-8-13 29 .13876 Humboldt Mouth of Redwood Creek at S Fork of Eel River 87 Comment
  HSC6648  Cardamine oligosperma J. R. Kahl 1962-3-10 6 Humboldt 2 mi. S of Trinidad along old Hwy.101 Comment
  UC1199209  Cardamine oligosperma Joseph P. Tracy 1923-4-8 6179 Humboldt Carlotta Northern Coast Ranges, Carlotta 60 Comment
  UC1222954  Carduus tenuiflorus Joseph P. Tracy 1942-6-28 17266 Humboldt toward Hungry Hollow Angel's Ranch; Bald Mountain, Hungry Hollow Comment
  CAS-BOT-BC18518  Carex abrupta Joseph Prince Tracy 1937-7-29 15580 Humboldt South Fork Mountains. McKay Camp. 1676 Comment
  JEPS25971  Carex aquatilis var. dives Joseph P. Tracy 1934-7-30 13504 Humboldt along coast in front of South End of Stone Lagoon; Dry Lagoon 3 Comment
  UC249738  Carex aquatilis var. dives Joseph P. Tracy 1923-6-24 8352 Humboldt Bald Mountain, meadow near High Prairie Northern Coast Ranges 1066 Comment
  UC79832  Carex arcta Joseph P. Tracy 1926-7-5 7723 Humboldt near Redwood House (on road to head of Yager); Northern Coast Ranges 609 Comment
  CAS-BOT-BC18073  Carex athrostachya Joseph Prince Tracy 1934-7-18 13426 Humboldt North Coast Ranges. Grouse Mountain. 1524 Comment
  CAS-BOT-BC18075  Carex athrostachya Joseph Prince Tracy 1935-7-23 14140 Humboldt Trinity Summit. Corral Prairie. 1584 Comment
  CAS-BOT-BC19214  Carex barbarae Joseph Prince Tracy 1934-8-14 13587 Humboldt North Coast Ranges. South Fork of Eel River, between Miranda and Redway. 91 Comment
  CAS-BOT-BC19440  Carex bolanderi Alice Eastwood; John Thomas Howell 1937-6-23 4779 Humboldt Near Dinsmores. Comment
  CHSC106520  Carex bolanderi Peter F. Zika 2009-6-15 24487 Humboldt North Coast (Nco). Near Hatchery Road , S of town of Blue Lake, riparian zone on S bank of Mad River. 20 Comment
  HSC104137  Carex brevicaulis G. Durant, G. Jaeger 2005-5-16 19051 Humboldt Comment
  JEPS26000  Carex densa Joseph P. Tracy 1936-6-3 14848 Humboldt Trinity River Valley, at Willow Creek 152 Comment
  UC1103112  Carex deweyana subsp. leptopoda Joseph P. Tracy 1933-6-2 12527 Humboldt Shively 60 Comment
  UC1103128  Carex echinata Joseph P. Tracy 1935-7-14 14085 Humboldt Grouse Mountain North Coast Ranges 1524 Comment
  CAS-BOT-BC19861  Carex echinata subsp. echinata Joseph Prince Tracy 1930-7-16 8986 Humboldt North Coast Ranges. South Fork Mountain. At McKay Camp. 1676 Comment
  CAS-BOT-BC19961  Carex exsiccata Joseph Prince Tracy 1927-7-17 8277 Humboldt North Coast Ranges. Three Cabins; grassy slopes on lower western foothills of Chaparral Mountain. 457 Comment
  CAS-BOT-BC21282  Carex fracta Joseph Prince Tracy 1937-7-25 15542 Humboldt Trinity Summit. Head of Hors-Linto Creek. 1371 Comment
  BLMAR179  Carex globosa Jennifer Anthony-Wheeler 1994-6-7 179 Humboldt King range, Near horse Mt ridgee 670 Comment
  HSC45022  Carex globosa R. Sutherland 1978-4-24 2 .24478 Humboldt Kinsey Ridge above Oat Creek 396 Comment
  UC1103061  Carex globosa Joseph P. Tracy 1939-4-25 16224 Humboldt mouth of creek Bull Creek 60 Comment
  CAS-BOT-BC146596  Carex gynodynama Joseph P. Tracy 1936-6-21 14991 Humboldt Iaqua 609 Comment
  CAS-BOT-BC22312  Carex harfordii Joseph Prince Tracy 1935-5-24 13811 Humboldt Eureka. 60 Comment
  HSC76807  Carex harfordii L. P. Janeway 1982-6-17 10 Humboldt 305 Comment
  UCD140376  Carex hendersonii Victor Duran 1933-5-12 3412 Humboldt Bull Creek, at South Fork of the Eel River. Comment
  UC562335  Carex hoodii Joseph P. Tracy 1932-7-11 10410 Humboldt Corral Prairie Trinity Summit 1584 Comment
  HSC103629  Carex integra Thomas W. Nelson, Jane Nelson 1987-6-11 8609 Humboldt Box Spring at Box Camp; along trail to North Trinity Mountain. 1524 Comment
  JEPS79856  Carex lenticularis var. impressa Joseph P. Tracy 1935-7-23 14148 Humboldt Trinity Summit, Corral Prairie Corral Prairie; Trinity Summit, Corral Prairie 1584 Comment
  CAS-BOT-BC28501  Carex lenticularis var. limnophila Robert F. Thorne 1965-9-19 35461 Humboldt Freshwater Lagoon S of Orick. 3 Comment
  RSA167279  Carex lenticularis var. lipocarpa Joseph P. Tracy 1950-8-7 19266 Humboldt Meadow at Box Camp, Trinity Summit. 1524 Comment
  UC1152083  Carex luzulina var. luzulina Joseph P. Tracy 1951-6-14 19410 Humboldt Snow Camp Comment
  UC562626  Carex luzulina var. luzulina Joseph P. Tracy Jul 16-19 1930 8987 Humboldt McKay camp, South Fork Mountain Northern Coast Ranges 1676 Comment
  UC195926  Carex luzulina var. luzulina Joseph P. Tracy 1914-7-4 4543 Humboldt High Prairie on Bald Mountain Northern Coast Ranges 1066 Comment
  HSC98941  Carex mendocinensis Cara Witte 2008-6-4 682 Humboldt Horse Mountain Botanical Area. Forest Service Road 6N38. Near Horse Mountain mine. 1276 Comment
  UCR246355  Carex mendocinensis Peter F. Zika 2011-7-3 25496 Humboldt Outer North Coast Ranges (NCoRo), Titlow Hill Road, 3.7 road miles SE of Route 299 at Berry Summit, 1 air km SSW of Horse Mountain 1310 Comment
  HSC85707  Carex mendocinensis L. P. Janeway 1982-6-20 14 Humboldt S of Horse Mtn., along Rd. 6N36, 100 m N of Titlow Hill Rd. 1384 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
  JEPS80018  Carex obnupta Joseph P. Tracy 1912-7-31 3898 Humboldt on nw slope of Buck Mountain Northern Coast Ranges, Burr Valley, Buck Mountain 1066 Comment
  POM79084  Carex obnupta Le Roy Abrams 1916-7-18 6083 Humboldt Arcata to Trinidad. Comment
  HSC7067  Carex obnupta Francis Winter 1960-4-23 Humboldt 1 mi. S of Simpson Creek, Korbel-Maple Creek Rd. 213 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
  HSC7158  Carex pachycarpa H. E. Parks, J. P. Tracy 1935-6-16 11271 Humboldt Buck Mtn., lower NW slopes 793 Comment
  HSC98595  Carex pachystachya Cara Witte 2008-8-6 1017 Humboldt Intersection of Forest Service Road 4E27 and National Forest 1. South of trail to Board Camp Butte. 1479 Comment
  UC1103095  Carex pachystachya Joseph P. Tracy 1934-7-12 13374 Humboldt e Big Lagoon 3 Comment
  CAS-BOT-BC118005  Carex rossii Joseph Prince Tracy 1949-5-8 18295 Humboldt Carlotta. Open flat by old Strong's District School House, 5 mi E of town. 60 Comment
  JEPS80022  Carex serratodens Joseph P. Tracy 1926-6-27 7692 Humboldt Horse Mountain Northern Coast Ranges, Horse Mountain 1219 Comment
  RSA313440  Carex serratodens Thomas W. Nelson, Jane P. Nelson 1978-7-2 4404 Humboldt In spring on disturbed site along road 2S08 near Pine Mountain, road to Lost Lake. 1463 Comment
  CHSC102857  Carex subbracteata Peter F. Zika 2009-6-16 24497 Humboldt Outer North Coast Range. Above Chezen Road, at junction with Route 299; between Lord-Ellis and Berry summits. 510 Comment
  SEINET4290245 Image available Carex subbracteata Unknown 2009-1 24497 Humboldt Outer North Coast Range (NCoRo), between Lord-Ellis and Berry summits. Above Chezen Road, at junction with Route 299. Comment
  SEINET7486520 Image available Carex subbracteata Peter F. Zika 2009-6-16 24497 Humboldt bove Chezen Road, at junction with Route 299, Outer North Coast Range (NCoRO), between Lord-Ellis and Berry summits 150 Comment
  JEPS109249  Carex subfusca D. W. Taylor 2007-7-11 20161 Humboldt Six Rivers National Forest, Horse Mountain, Titlow Hill Road at the junction with Forest Road 6N18. Comment
  UC585640  Carex tumulicola Joseph P. Tracy 1937-6-20 15338 Humboldt 10 mi up stream from mouth Bear River 152 Comment
  RSA91642  Carex tumulicola Alice Eastwood, John Thomas Howell 1937-6-23 4758 Humboldt Dinsmore s. Comment
  POM248622  Carex unilateralis Joseph P. Tracy 1937-8-7 15618 Humboldt Bald Mt. 915 Comment
  CDA33171  Carex viridula subsp. viridula Gordon Leppig 1999-10-3 1258 Humboldt Big Lagoon County Park, Big Lagoon Bog. Comment
  HSC45088  Castilleja affinis subsp. litoralis R. Sutherland 1978-4-25 11 Humboldt Bluff at Shelter Cove. 24 Comment
  UC1196864  Castilleja affinis subsp. litoralis J. P. Tracy 1901-5-12 1084 Humboldt immediate vicinity Eureka 0 Comment
  JEPS93175  Castilleja ambigua subsp. humboldtiensis Margriet Wetherwax and Kevin Downing 1993-8-9 2455 Humboldt just n Eureka (s side of Eureka Slough, e side of Humboldt Bay, near Bayside Rd and Myrtle, just past Pigeon Point, e side of road); Humboldt Bay 5 Comment
  BLMAR161  Castilleja applegatei subsp. pinetorum Donald Hazlett 1994-6-7 161 Humboldt King range, near horse Mt. Ridge rd 670 Comment
  CAS-BOT-BC255519  Castilleja applegatei var. pinetorum Duart V. Brown 1947-4-2 30 Humboldt Hillside just above river, near Sweed Creek, Trinity River 426 Comment
  UCR39807  Castilleja attenuata L. P. Janeway 1984-5-5 754 Humboldt Road shoulder of Hwy 299 c. 1.5 mi west of Willow Creek 250 Comment
  HSC95071  Castilleja exserta subsp. latifolia Andrea Pickart 2002-7-2 148 Humboldt King Salmon Sand Spit 0 Comment
  JEPS76825  Castilleja exserta subsp. latifolia L. R. Heckard with T. I. Chuang and R. C. Bacigalupi 1978-5-27 4805 Humboldt beach at Manila Manila; Samoa Peninsula, beach at Manila Comment
  UC582577  Castilleja miniata Joseph P. Tracy 1932-7-14 10545 Humboldt Corral Prairie; Trinity Summit 1584 Comment
  HSC44348  Castilleja pruinosa Brad Klipfel 1975-7-11 696 Humboldt Horse Mtn. Comment
  JEPS103929  Castilleja pruinosa T. I. and F. M. Chuang 1991-7-9 7875 Humboldt 4.3 mi SE of junction of rt. 299 and Titlow Hill Rd. on way to Horse Mt. Comment
  UC168991  Castilleja rubicundula subsp. lithospermoides Joseph P. Tracy 1901-5-28 1244 Humboldt Redwood Creek North Coast Ranges (at Bair's ranch) 121 Comment
  UC1502104  Ceanothus R. Sutherland 1975-7-4 7 .4.7 75 Humboldt Pt. Delgada Quad. 518 Comment
  HSC41255  Ceanothus arcuatus Brad Klipfel 1974-6-25 445 Humboldt Horse Mtn. Comment
  HSC41322  Ceanothus arcuatus Brad Klipfel 1974-9-2 525 Humboldt Horse Mtn. Comment
  UC1193335  Ceanothus cordulatus P. Zinke 1950-10-9 77 Humboldt King Peak King Peak Quad. 28D1 1280 Comment
  HSC43178  Ceanothus gloriosus var. exaltatus R. Sutherland 1975-6-19 0 .19675 Humboldt Kelly Rd. ENE of Shelter Cove 640 Comment
  JEPS82328  Ceanothus gloriosus var. exaltatus Roger Raiche 1983-7-18 30530 Humboldt 2.4 mi n rd to Shelter Cove (along King Peak Rd); King Range Comment
  CAS-BOT-BC50053  Ceanothus incanus Joseph P. Tracy 1935-5-25 13824 Humboldt Larrabee Creek, near Bosworth's 304 Comment
  CAS-BOT-BC50055  Ceanothus incanus W. R. Dudley 1899-6-20 s.n. Humboldt Near Eel River in woods Comment
  OBI36663  Ceanothus integerrimus David J. Keil 1983-7-2 17325 Humboldt Ca. 4 mi SE of SR299 along Titlow Hill rd below Horse Mtn Summit rd Comment
  CAS-BOT-BC51210  Ceanothus parryi Carl B. Wolf 1927-8-30 1245 Humboldt Bank of stream of Ettersburg Comment
  CAS-BOT-BC51217  Ceanothus parryi M. S. Jussel 1931-5-2 s.n. Humboldt 20 miles N. of Garberville Comment
  CAS-BOT-BC51221  Ceanothus parryi C. Hart Merriam 1920-8-27 s.n. Humboldt South fork Eel River (10 miles so. of Garberville) Comment
  HSC37085  Ceanothus parryi R. Sutherland 1975-6-4 1 .4675 Humboldt Near county rd. 2 mi NE of Briceland 168 Comment
  SBBG68534  Ceanothus parryi L. Rowntree -Jul-1931 Humboldt Ettersburg Comment
  CAS-BOT-BC53061  Ceanothus pumilus Mrs. H. C. Cantelow 1936-5-19 s.n. Humboldt 11 miles east of Crescent City Comment
  HSC45481  Ceanothus thyrsiflorus Maralyn O'Meara 1973-2-9 127 Humboldt McKinleyville, N side of Mad River along N Bank Rd., 0.5 mi. E of Hwy. 101 Comment
  RSA25754  Ceanothus thyrsiflorus Carl B. Wolf 1941-7-28 11089 Humboldt Summit of Trinidad Head. 46 Comment
  UC1198000  Ceanothus thyrsiflorus J. P. Tracy 1901-6-23 1166 Humboldt Eureks 0 Comment
  CAS-BOT-BC277187  Centaurea X pouzinii T. C. Fuller 1960-8-25 4975 Humboldt Pacific Lumber Co., Perrott Creek, across Eel River from Dyerville Comment
  UC166067  Centaurea melitensis Joseph P. Tracy 1911-7-4 3297 Humboldt along creek, near its mouth Willow Creek (tributary of Trinity River); North Coast Ranges, Trinity River, Willow Creek 182 Comment
  UC582526  Centaurea solstitialis Joseph P. Tracy 1933-8-27 13002 Humboldt 2 to 5 mi e of South Fork (along Eel River); Eel River 45 Comment
  RSA391522  Centaurium muehlenbergii M. V. Hood 1940-08 s.n. Humboldt Eel River - near Redway. 457 Comment
  RSA50142  Centaurium muehlenbergii E. K. Balls 1949-7-11 13970 Humboldt Nine miles from Bluff Creek, on Highway 96 on way to Willow Creek. 110 Comment
  RSA54130  Centaurium muehlenbergii H. M. Pollard 1945-8-28 s.n. Humboldt Near Harley place, New Orleans. Comment
  UC154023  Centunculus minimus J. P. Tracy 1903-8-9 1943 Humboldt immediate vicinity of Eureka 0 Comment
  UC13533  Cephalanthera austiniae Chesnut and Drew 1888-7-9 Humboldt Kneeland Comment
  HSC98133  Cephalanthera austiniae Cara Witte 2007-6-27 372 Humboldt Near Grouse Mountain. Along Forest Service Road 4N32. Near intersection with 4N32B 1516 Comment
  HSC68022  Cerastium glomeratum J. P. Smith, Steve Selva 1970-6-30 4140 Humboldt Comment
  HSC31807  Cercis occidentalis Steve Selva, Roger Jensen 1974-8-27 81 Humboldt Along Hwy. 299 at Willow Creek Comment
  SEINET200309  Chamaecyparis lawsoniana Joseph P. Tracy 1926-6-27 7672 Humboldt Horse Mountain 1463 Comment
  UC1198975  Chamaesyce serpyllifolia Joseph P. Tracy 1925-11-1 7299 Humboldt along Eel River (from South Fork to Scotia, Shively); Northern Coast Ranges 60 Comment
  HSC55037  Chamerion angustifolium subsp. circumvagum Gilbert Muth 1979-7-31 11497 Humboldt Near Tish Tang A Tang Creek, S Fork, close to the town of Hoopa 1417 Comment
  CAS-BOT-BC68266  Cheilanthes gracillima Henry M. Pollard 1946-8-28 s.n. Humboldt Near summit of Orleans Mt. 1828 Comment
  HSC76323  Cheilanthes gracillima Denis Kearns 1981-7-21 304 Humboldt Near Whiteys Peak 1585 Comment
  RSA44511  Cheilanthes gracillima Henry M. Pollard 1947-9-1 s.n. Humboldt Peak of Somes Mountain, near Orleans 1524 Comment
  UC1225780  Chenopodium album Joseph P. Tracy 1948-9-5 18203 Humboldt Grizzly Camp Trinity Summit, Little Hors-Linto Creek 1371 Comment
  HSC25383  Chenopodium album Thomas W. Nelson 1972-10-25 702 Humboldt Eureka, waste area of Harris and B St. Comment
  UC1222586  Chenopodium ambrosioides Joseph P. Tracy 1950-9-22 19377 Humboldt near Slate Creek (8 mi below Orleans); Klamath River 121 Comment
  BLMAR166  Chimaphila menziesii Donald Hazlett 1994-6-7 166 Humboldt King range, near horse Mt. Ridge rd 670 Comment
  CAS-BOT-BC451385  Chimaphila menziesii Harley P. Chandler 1901-6-1 1398 Humboldt North Coast Ranges, Hupa Indian Reservation 152 Comment
  HSC17948  Chimaphila menziesii D. E. Anderson 1963-5-18 2449 Humboldt Near junction of New and Trinity Rivers Comment
  UC1197603  Chimaphila umbellata Joseph P. Tracy 1948-8-15 18140 Humboldt on ridge 2 mi. e. Grove's Prairie (Trinity Summit); Trinity Summit 1524 Comment
  CAS-BOT-BC451494  Chimaphila umbellata Milo S. Baker 1947-8-10 11899 Humboldt 15 mi. NE of Hoopa near end of forest road 1371 Comment
  CAS-BOT-BC451499  Chimaphila umbellata Carl B. Wolf 1937-8-12 9209 Humboldt North Coast Range, South Fork Mt., 0.6 mi S of Blake Lookout 1676 Comment
  CAS-BOT-BC452227  Chimaphila umbellata Volney Rattan 1878-6-1 s.n. Humboldt North of Mad River Comment
  UCD117387  Chimaphila umbellata H. P. Olmo 1928-6-10 s.n. Humboldt Wooley Creek. Comment
  RSA467017  Chimaphila umbellata subsp. occidentalis H. M. Pollard 1948-7-31 237 Humboldt Orleans Mt. 1372 Comment
  HSC100553  Chlorogalum pomeridianum Carl C. Marshall Jul 1886 260 Humboldt Throughout the Coast Range, Humboldt Bay. Comment
  CAS-BOT-BC236918  Chloropyron maritimum subsp. palustre Joseph P. Tracy 1938-7-15 16064 Humboldt At Fields Landing, around Humboldt Bay 3 Comment
  CAS-BOT-BC36477  Chrysolepis chrysophylla var. minor Joseph P. Tracy 1937-7-29 15589 Humboldt Northern Coast Ranges. South Fork Mountain, west slope near top, at Hyampom Trail 1676 Comment
  OBI14344  Chrysolepis chrysophylla var. minor Carl B. Wolf 1937-9-13 9338 Humboldt North Coast range, summit of Grouse Mt Comment
  UC1223064  Cichorium intybus Joseph P. Tracy 1950-7-9 18981 Humboldt Frank Graham's Farm; Willow Creek Comment
  HSC58382  Cinna latifolia Terry Griswold 1979-7-25 10857 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon 1784 Comment
  HSC58809  Cinna latifolia G. L. Clifton, Griswold 1979-8-1 11982 Humboldt Near Mill Creek Lakes, close to the town of Hoopa 1707 Comment
  HSC38627  Circaea alpina subsp. pacifica D. E. Anderson, J. P. Smith 1971-6-18 - 1101 Humboldt In narrow canyon of the N Fork of Mad River, along Hwy. 299, E of Blue Lake Comment
  JEPS31552  Circaea alpina subsp. pacifica Lincoln Constance 1934-5-31 742 Humboldt from w. boundary of park to Grasshopper Peak (Squaw Creek rd., Bull Creek flat along Bull Creek, n. side of creek, Bull Creek Region); Bull Creek Region Comment
  HSC91922  Cirsium arvense E. Mackey 1986-7-21 Humboldt Patricks Point State Park; Palmer's Point Comment
  CAS-BOT-BC284438  Cirsium brevistylum Henry M. Pollard 1948-8-9 s.n. Humboldt Camp Creek near Orleans Comment
  HSC39168  Cirsium brevistylum D. E. Anderson, J. P. Smith 1971-6-28 1235 Humboldt Along Mad River, 2 mi. S of Blue Lake. Comment
  UC176341  Cirsium occidentale var. candidissimum Joseph P. Tracy 1912-7-26 3854 1/2 Humboldt Kneeland Prairie Northern Coast Ranges, Kneeland Prairie 762 Comment
  RSA43690  Cirsium occidentale var. candidissimum H. M. Pollard 1947-8-30 s.n. Humboldt Near Wilson Creek, on Klamath River, (near Orleans) Comment
  UC204828  Cirsium occidentale var. venustum Joseph P. Tracy 1918-7-3 4988 Humboldt Wilder Ridge Northern Coast Ranges, Wilder Ridge 762 Comment
  HSC68157  Cirsium vulgare J. P. Smith 1971-10-6 4972 Humboldt End of Murray Rd. in McKinleyville. Comment
  UC1196995  Clarkia amoena Joseph P. Tracy 1913-7-20 4381 Humboldt near Berry's; Northern Coast Ranges, Redwood Creek 304 Comment
  UC677710  Clarkia amoena S. K. Harris 1936-6-25 671 Humboldt road from Petrolia to Cape Mendocino (s side of Domingo Gulch) 30 Comment
  CAS-BOT-BC160970  Clarkia amoena subsp. amoena L. R. Abrams 1916-7-11 6020 Humboldt Mouth of Grizzly Creek on Van [Duzon] Duzen River - Redwood forest Comment
  UC314617  Clarkia amoena subsp. amoena Joseph P. Tracy 1926-7-5 7739 Humboldt Iaqua Northern Coast Ranges 609 Comment
  SDSU8656  Clarkia amoena subsp. huntiana D. F. Howe 1964-8-10 3951 Humboldt 7.5 miles from Ferndale on road to Petrolia. Comment
  CAS-BOT-BC164175  Clarkia concinna S. K. Harris; J. P. Tracy 1936-6-10 3265 Humboldt West of the South Fork of the Trinity River near its mouth 640 Comment
  HSC64516  Clarkia concinna subsp. concinna J. P. Smith, Steve Selva 1970-6-14 3840 Humboldt Along Hwy. 96 at Whitmore Creek. 152 Comment
  HSC38102  Clarkia gracilis Thomas W. Nelson, James Nelson 1976-5-30 2623 Humboldt McKeown Ranch, N of Dinsmore. Comment
  CAS-BOT-BC164595  Clarkia gracilis subsp. gracilis Alice Eastwood; John Thomas Howell 1937-6-23 4802 Humboldt Little Van Duzen River Comment
  CAS-BOT-BC172504  Clarkia purpurea subsp. quadrivulnera Doris K. Kildale 1926-6-8 2128 Humboldt Bug Creek 792 Comment
  CAS-BOT-BC172507  Clarkia purpurea subsp. quadrivulnera Doris K. Kildale 1925-6-28 804 Humboldt Kneeland Prairie, bald hills 762 Comment
  CAS-BOT-BC172509  Clarkia purpurea subsp. quadrivulnera J. P. Tracy 1933-7-3 12634 Humboldt Trinity River at Willow Creek 152 Comment
  CAS-BOT-BC172394  Clarkia purpurea subsp. viminea Henry M. Pollard 1948-7-19 s.n. Humboldt Near Orleans Comment
  JEPS43222  Claytonia lanceolata W. L. Jepson 1902-7-23 2104 Humboldt Trinity Summit Comment
  HSC71064  Claytonia perfoliata Thomas W. Nelson, Jane P. Nelson 1977-5-30 3398 Humboldt Mckeown Ranch, along road to Anderson's Ford 854 Comment
  HSC17681  Claytonia perfoliata S. R. Johnson 1965-3-28 24 Humboldt 1 mi. N of Luffenholtz Beach Comment
  CAS-BOT-BC440092  Claytonia perfoliata subsp. perfoliata J. M. Miller 1974-6-2 361 Humboldt French Camp Ridge; on Bald Hills Rd. 18.6 mi. SE. of the Lady Bird Johnson Grove parking lot. Adjacent to Bald Hills Rd. Approximate vicinity of French Camp 822 Comment
  CAS-BOT-BC443727  Claytonia rubra subsp. rubra R. K. Gierisch; D. H. Esplin 1969-7-1 3534 Humboldt Six Rivers National Forest. Grouse Mtn. Comment
  SEINET200312  Claytonia rubra subsp. rubra J. P. Tracy 1913-6-16 4141 Humboldt Dinsmore's Ranch in valley of Van Duzen River opposite Buck Mt. 762 Comment
  RSA259540  Claytonia saxosa D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5623 Humboldt Mount Lassic and 2 smaller peaks to immediate east. 1768 Comment
  UCD100550  Claytonia saxosa Thomas W. Nelson; Jane P. Nelson 1980-6-27 5952 Humboldt Six Rivers National Forest. Saddle between two peaks east of Mount Lassic. 1767 Comment
  CAS-BOT-BC443893  Claytonia sibirica Carl B. Wolf 1927-8-22 799 Humboldt Big Lagoon Comment
  HSC73631  Claytonia sibirica M. A. Baker 1980-7-22 3131 Humboldt Near Grogan Hole. 1676 Comment
  POM117947  Claytonia sibirica Marcus E. Jones 1924-4-26 s.n. Humboldt Scotia Comment
  SBBG69724  Claytonia sibirica H. and M. Dearing 1939-6-21 3689 Humboldt E fork of Willow Crk Comment
  HSC17733  Claytonia sibirica E. W. Styskel 1963-5-16 31 Humboldt 3 mi. SE of Korbel, on Snow Camp Rd. 290 Comment
  SEINET11933917  Claytonia sibirica F. H. Utech 1986-1 86 -417 Humboldt Cape Mendocino, along Pacific Ocean 5 Comment
  UCD100897  Claytonia sibirica James P. Smith 1973-5-26 6850 Humboldt Scotia Bluffs along the Eel River near Rio Dell. Railroad right-of-way. Comment
  UC673154  Clematis lasiantha Lincoln Constance and Reed C. Rollins 1942-5-11 2873 Humboldt 6 mi. s. Hoopa; North Coast Ranges, Hoopa Valley 121 Comment
  UC183678  Clematis ligusticifolia Joseph P. Tracy 1912-8-3 3963 Humboldt opposite Buck Mt. (Dinsmore's Ranch, valley of Van Duzen R.); Northern Coast Ranges, valley of Van Duzen R., Dinsmore's Ra 762 Comment
  CAS-BOT-BC499339  Clintonia andrewsiana Doris K. Kildale 1931-5-10 10682 Humboldt Snow Camp Comment
  HSC100554  Clintonia andrewsiana Carl C. Marshall May 1885 69 Humboldt Redwood forests. Comment
  HSC15444  Clintonia andrewsiana D. E. Anderson 1965-11-1 4167 Humboldt 3 mi. S of Kneeland School Comment
  UC1541329  Clintonia andrewsiana H. E. and S. T. Parks May 1930 754 Humboldt up the Van Duzen River Van Duzen River Comment
  UC1103459  Clintonia uniflora Joseph P. Tracy 1936-6-28 15018 1/2 Humboldt Bald Mountain, at Lake Prairie Lake Prairie; Bald Mountain, Lake Prairie 1219 Comment
  HSC101087  Coincya monensis Andrea Pickart 2009-2-20 729 Humboldt Manila Dunes; End of Lupine Ave., Manila 15 Comment
  JEPS25057  Collinsia heterophylla Joseph P. Tracy 1927-5-8 7988 Humboldt Vicinity of Garberville 121 Comment
  HSC73177  Collinsia linearis M. A. Baker 1980-5-18 1335 Humboldt Near Black Mtn. 792 Comment
  HSC97222  Collinsia linearis Kiera A. Freeman, Heather J. Perry 2007-6-11 3 Humboldt 14.1 mi. S of Hwy. 299 on NF1 1372 Comment
  UC1196760  Collinsia parviflora Joseph P. Tracy 1929-7-4 8623 Humboldt French Camp Ridge 1066 Comment
  UC169873  Collinsia parviflora V. Rattan Humboldt Hoopa valley Comment
  JEPS26114  Collinsia parviflora Peter H. Raven with R. Snow 1958-7-20 13634 Humboldt 2.8 mi s jct of Titlow Hill and Friday Ridge rds (near Grouse Mtn) 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
  UC198584  Collinsia sparsiflora var. sparsiflora Joseph P. Tracy 1916-5-2 4685 Humboldt Northern Coast Ranges, Eureka, lower slopes of Buck Mountain Buck Mountain; Northern Coast Ranges, Eureka, Buck Mountain 762 Comment
  HSC98863  Collomia grandiflora Cara Witte 2008-8-5 985 Humboldt Buck Flat. Intersection of National Forest 1 and Forest Service Road 5N01. 1569 Comment
  JEPS71020  Collomia grandiflora Joseph P. Tracy 1932-7-13 10501 Humboldt open places Trinity Summit, Corral Prairie 1584 Comment
  HSC97946  Collomia grandiflora Cara Witte 2007-6-27 368 Humboldt Near Grouse Mountain. Along Forest Service Road 4N32. Near intersection with 4N32B 1516 Comment
  RSA409229  Collomia heterophylla M. S. Jussel 1931-5-2 s.n. Humboldt Sylvandale, 8 mi north of Garberville Comment
  UC1197845  Collomia heterophylla J. P. Tracy 1903-8-9 1933 Humboldt immediate vicinity Eureka 0 Comment
  JEPS71046  Collomia heterophylla Lincoln Constance 1934-5-24 628 Humboldt forest bordering e side lower Look Prairie; Bull Creek Area 45 Comment
  POM270917  Collomia heterophylla S. K. Harris 1942-6-12 1386 Humboldt Fickle Hill Road to Boynton Prairie, SN 2 E. 600 Comment
  JEPS26235  Collomia tracyi Joseph P. Tracy 1939-8-5 16372 Humboldt Dinsmore's Van Duzen River (in sand bar) 737 Comment
  JEPS26242  Collomia tracyi Joseph P. Tracy 1932-7-12 10468 Humboldt head Brett Hole (in areas of disintegrated rock); Trinity Summit 1828 Comment
  SBBG103147  Collomia tracyi D. H. Wilken with C. Donahue 1976-7-16 12708 Humboldt Horse Mtn Natural Area, N of Berry Summit 1310 Comment
  UC23379  Collomia tracyi Harley P. Chandler June 1901 1475 Humboldt Klamath River North Coast Ranges 426 Comment
  CAS-BOT-BC157349  Comarum palustre Carl B. Wolf 1927-8-22 775 Humboldt Big Lagoon Comment
  RSA30377  Coptis laciniata Lincoln Constance, R. C. Rollins 1942-5-11 2868 Humboldt 3 miles W of E Fork of Willow Creek, Comment
  HSC63024  Corallorhiza striata M. A. Baker 1979-6-24 903 Humboldt 2 km. S of Brush Mtn. Comment
  HSC90639  Cordylanthus maritimus subsp. palustris Gail Newton 1983-8-21 3855 Humboldt Elk River Wildlife Area, Eureka. Comment
  UC175787  Cordylanthus maritimus subsp. palustris Joseph P. Tracy 1912-6-16 3697 Humboldt Hookton Northern Coast Region, Region about Humboldt Bay (salt marsh) 0 Comment
  CAS-BOT-BC32935  Corethrogyne filaginifolia var. californica Henry Nicholas Bolander 1867-6-1 s.n. Humboldt On the coast at Shelter Cove and at Fort Bragg Comment
  UC1196911  Cornus nuttallii Joseph P. Tracy 1908-6-9 2675 Humboldt Kneeland Prairie Northern Coast Ranges, Kneeland Prairie 762 Comment
  UCSB24633  Cornus nuttallii Jensen, Karen 1965-4-15 Humboldt 1 km. west of Hwy. 101 by Miranda turnoff 91 Comment
  HSC58001  Cornus sericea subsp. sericea G. L. Clifton, Griswold 1979-7-31 11785 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1805 Comment
  HSC58048  Cornus sericea subsp. sericea G. L. Clifton, Griswold 1979-8-1 11907 Humboldt Near Mill Creek Lakes, close to the town of Hoopa. 1692 Comment
  UC249598  Cornus sericea subsp. sericea Joseph P. Tracy 1921-9-4 5949 Humboldt Trinity R. Valley near Willow Creek; Northern Coast Ranges, Trinity R. Valley 152 Comment
  UC154068  Cornus sessilis Mrs. M. H. Manning 1902-1 Humboldt near Hupa Comment
  JEPS53365  Coronopus didymus Lincoln Constance 1934-6-18 902 Humboldt border of N. Dyerville Flat, near South Fork Rail Road Station and Post Office, South Fork Eel River South Fork Eel River; Bull Creek Region, South Fork Eel River Comment
  UC1197936  Corylus californica Joseph P. Tracy 1949-7-19 18375 Humboldt at Friday Camp 1219 Comment
  CAS-BOT-BC172850  Corylus cornuta subsp. californica Joseph P. Tracy 1946-8-25 17639 Humboldt Table Bluff, windswept N slopes, along Hookton Road 9 Comment
  HSC3477  Corylus cornuta subsp. californica Curt M. Johnson 1966-3-11 117 Humboldt Along Bull Creek Rd. 6 mi. W of Weott 140 Comment
  OBI36662  Corylus cornuta subsp. californica David J. Keil 1983-7-2 17312 Humboldt Ca. 4 mi SE of SR 299 along Titlow HIll Rd below Horse Mtn Summit Rd Comment
  CAS-BOT-BC180310  Corylus cornuta subsp. californica L. B. Kildale 1928-2-19 4275 Humboldt 2 miles N of Redwood lighway Comment
  RSA33407  Corylus cornuta var. californica Doris K. Kildale 1927-3-25 3004 Humboldt Humboldt Hill Comment
  HSC5428  Cotula coronopifolia John Warner Hosking 1968-10-10 Humboldt Clam Beach. Comment
  SEINET3817858  Cotula coronopifolia H. E. Parks 24211 Humboldt Little River State Park Comment
  HSC5426  Cotula coronopifolia R. Spellenberg 1964-6-15 412 Humboldt Along egde of Humboldt Bay, on the south side of Arcata Comment
  HSC5433  Cotula coronopifolia W. F. Nickel 1965-5-12 Humboldt On H.S.C. campus behind the Biological Sciences building Comment
  UC165199  Crepis monticola Joseph P. Tracy 1908-6 2915 Humboldt Buck Mountain Northern Coast Ranges (nw slope) 1219 Comment
  CAS-BOT-BC290727  Crepis occidentalis subsp. conjuncta Volney Rattan 1878-1-1 s.n. Humboldt Unspecified Comment
  HSC74027  Crepis pleurocarpa Gail Newton 1980-7-11 1313 Humboldt Near Red Mtn. 1341 Comment
  HSC74285  Crepis pleurocarpa M. A. Baker 1980-7-11 2783 Humboldt Near Red Mtn. 1341 Comment
  HSC98096  Crepis pleurocarpa Cara Witte 2007-6-20 310 Humboldt Forest Service Road 4N32. 1 mile south of intersection with 4N32E. 1386 Comment
  UC905064  Crepis setosa Henry M. Pollard 1948-8-8 Humboldt roadside between Orleans and Camp Creek Comment
  UCD130992  Crocidium multicaule Roman Gankin; W. R. Hildreth 1966-3-15 700 Humboldt Klamath River canyon, State Highway 96, 4.6 miles north of Hoopa. Comment
  HSC102928  Cryptantha M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-12 900 Humboldt Patterson Meadows 1566 Comment
  HSC58318  Cryptantha affinis Overton, Butler 1979-8-2 12606 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  HSC40851  Cryptantha affinis Thomas W. Nelson 1976-7-9 2998 Humboldt Along W side of ridge S of E peak of Lassic Mtn., (Signal Peak). 1524 Comment
  UC1239655  Cryptantha flaccida Joseph P. Tracy 1939-8-5 16383 Humboldt Dinsmore's 746 Comment
  JEPS18415  Cryptantha milobakeri Joseph P. Tracy 1932-6-14 10141 Humboldt w of mouth of South Fork of Trinity River; North Coast Ranges 609 Comment
  HSC73718  Cryptantha torreyana M. A. Baker 1980-7-15 2976 Humboldt Near Whiting Ridge. 1341 Comment
  RSA135453  Cryptantha torreyana Volney Rattan 1882-06 s.n. Humboldt North of Mad River. Comment
  HSC55165  Cryptogramma acrostichoides Gilbert Muth 1979-8-1 12155 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1677 Comment
  SEINET905773  Cuscuta campestris Harry B. Tucker 1946-1 s.n. Humboldt Bayside, field, local in small area 6 Comment
  UC906746  Cuscuta campestris Harry B. Tucker Oct 1946 Humboldt 6 Comment
  UC1197868  Cuscuta occidentalis Joseph P. Tracy 1949-8-4 18409 Humboldt Mud Springs Trinity Summit 1341 Comment
  HSC6395  Cuscuta subinclusa J. P. Tracy 1924-7-20 6736 Humboldt Brannan Mtn. on Willow Cr. Rd. 1006 Comment
  UC562478  Cuscuta subinclusa Joseph P. Tracy 1931-6-20 9586 Humboldt Alton, along Van Duzen River North Coast Ranges, Van Duzen River 30 Comment
  UC1222261  Cynoglossum grande Joseph P. Tracy 1950-5-7 18647 Humboldt ca. 5 mi. n. Bridgeville (on rd. to S. Yager Valley) Comment
  CAS-BOT-BC190371  Cynosurus cristatus Peter H. Raven; R. Snow 1958-7-21 13657 Humboldt 2.0 miles north of Cape Mendocino. Comment
  UCD60127  Cynosurus cristatus Ray Evans 1956-7-19 s. n. Humboldt 4.5 miles northwest of Petrolia. Comment
  HSC38430  Cynosurus echinatus Dennis Anderson, J. P. Smith 1971-6-18 - 1061 Humboldt Chezem Rd., 3 mi. E of bridge over Redwood Creek Comment
  HSC44737  Cynosurus echinatus Maralyn O'Meara 1972-6-8 85 Humboldt Along Bald Hills Rd, 16.4 mi. E of junction with Hwy. 101 Comment
  HSC47794  Cynosurus echinatus Michael A. Watkins 1978-6-10 14 Humboldt Arcata, E side of 7th St. overpass to Hwy. 101 Comment
  UC1103243  Cynosurus echinatus Joseph P. Tracy 1950-6-8 18732 Humboldt Bear River Ridge 609 Comment
  UC668034  Cyperus eragrostis Joseph P. Tracy 1935-5-25 13836 Humboldt Fort Seward 106 Comment
  HSC74131  Cystopteris fragilis R. York 1980-5-23 613 Humboldt Near Buck Mtn. 1524 Comment
  RSA1438  Cytisus monspessulanus E. R. Johnson 1929-08 1434 Humboldt Eel River. 91 Comment
  HSC14668  Cytisus scoparius T. W. Beck 1963-4-22 34 Humboldt Humboldt Meridian. Camp Bauer just outside the entrance, Korbel. Comment
  SEINET4565919  Dactylis glomerata J. B. Davy 1899-6-16 5557 Humboldt Scotia Comment
  UCD60514  Danthonia californica var. americana R. Tofsrud 1947-6-27 s.n. Humboldt About halfway between Yager and Kneeland on county road. Comment
  UC402443  Darmera peltata P. E. Goddard 1901-7 173 Humboldt Klamath River Comment
  UC1198472  Datisca glomerata Joseph P. Tracy 1911-7-10 3494 Humboldt Valley of Trinity River (near mouth of Willow Creek); Northern Coast Ranges, Willow Creek 152 Comment
  HSC38938  Daucus pusillus Linda M. Barker 1976-5-13 1486 Humboldt 3 mi. W of Arcata. Comment
  SBBG5180  Daucus pusillus H. and M. Dearing 1939-5-25 3442 Humboldt sand dunes near Samoa Comment
  POM232322  Daucus pusillus I. L. Wiggins 1930-7-11 4678 Humboldt Near Samoa Comment
  HSC102079  Delphinium decorum subsp. tracyi M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 981 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  HSC24969  Delphinium decorum subsp. tracyi Elrid H. Spinas 1948-5-15 2 Humboldt Horse Mtn. Comment
  HSC24971  Delphinium decorum subsp. tracyi Gerald T. Rood 1962-5-11 6 Humboldt Knneland Rd. 1.0 mi. W of Barry Rd. Comment
  SEINET12099544  Delphinium hesperium J. P. Tracy 1950-1 18875 Humboldt 3 mi N of Blocksburg Comment
  UC1196328  Delphinium nudicaule Joseph P. Tracy 1937-5-30 15303 Humboldt 5 mi n Blocksburg; Larrabee Creek 365 Comment
  HSC25006  Delphinium nudicaule S. Estes 1964-4-29 12 Humboldt May Ranch, 2 mi. N of Bridgeville 305 Comment
  HSC45097  Delphinium nudicaule R. Sutherland 1978-4-24 13 .24478 Humboldt Kinsey Ridge 311 Comment
  UC1196343  Delphinium trolliifolium Joseph P. Tracy 1908-6 2774 Humboldt opposite Buck Mountain; Northern Coast Ranges, valley of Van Duzen River 762 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
  HSC37428  Delphinium trolliifolium D. W. Snell 1964-4-18 49 Humboldt Mad River bottom, 3 mi. N of Blue Lake Comment
  SEINET12099650  Delphinium trolliifolium J. P. Tracy 1951-1 19559 Humboldt halfway between Snow Camp and Twin Lakes (at Charley Preston's old gate near the road) Comment
  UC1196338  Delphinium trolliifolium Joseph P. Tracy 1933-5-20 12269 Humboldt hillsides Northern Coast Ranges, Bear River Ridge 609 Comment
  UC1103212  Deschampsia cespitosa subsp. cespitosa Joseph P. Tracy 1912-7-21 3789 Humboldt Alton Northern Coast Region, Alton 30 Comment
  CAS-BOT-BC201770  Deschampsia elongata L. R. Abrams 1918-6-16 7153 Humboldt Willow Creek Comment
  HSC39715  Deschampsia elongata D. E. Anderson, J. P. Smith 1971-6-28 - 1263 Humboldt 2.5 mi. S of Blue Lake along the Mad River Comment
  HSC40402  Deschampsia elongata Thomas W. Nelson 1976-7-9 3006 Humboldt S of Mtn. Lassic, (Signal Peak). 1707 Comment
  JEPS75412  Deschampsia elongata W. L. Jepson 1932-7-24 16381 Humboldt 91 Comment
  POM365046  Deschampsia elongata Henry M. Pollard 1948-7-26 s.n. Humboldt Near mouth of Camp Creek- near Orleans. Comment
  UCD63315  Deschampsia elongata A. H. Murphy 1948-10-21 Humboldt 1/4 mile east of Lassic Peak lookout, northeast of Blocksburg. Comment
  HSC8361  Dicentra formosa D. K. Smith 1968-3-3 11 Humboldt West End Rd., 3 mi. from Hwy. 299 Comment
  UC1362291  Dicentra formosa Kingsley R. Stern 1964-6-13 2107 Humboldt ca 2 mi s Miranda (on e side of U.S. Highway 101, ca 50 yds n of Fish Creek) Comment
  RSA183585  Dicentra formosa subsp. formosa R. D. Zortman 1963-3-16 15 Humboldt 5 miles northeast of Arcata; south of the Mad River, off Warren Creek Road. 91 Comment
  UC1103020  Dicentra pauciflora Joseph P. Tracy Jul 16 1930-Jul 19 1930 9019 Humboldt near McKay Camp (South Fork Mountain); Northern Coast Range, South Fork Mountain 1676 Comment
  CAS-BOT-BC209193  Dichanthelium acuminatum subsp. acuminatum Joseph P. Tracy 1931-5-17 9427 Humboldt Along river, Willow Creek, Trinity River Valley. 152 Comment
  POM126098  Dichanthelium acuminatum var. fasciculatum Joseph P. Tracy 1900-8-26 925 Humboldt At Eureka 0 Comment
  CAS-BOT-BC208955  Dichanthelium oligosanthes subsp. scribnerianum Henry M. Pollard 1946-9-1 s.n. Humboldt Near Wilson Creek, Orleans region. Comment
  HSC39057  Dichelostemma capitatum subsp. capitatum Thomas W. Nelson, Jane P. Nelson 1976-5-31 2643 Humboldt N of junction of FS Rds. 1S07 and 5E27 along 5E27 1524 Comment
  HSC97467  Dichelostemma capitatum subsp. pauciflorum Cara Witte 2007-5-29 126 Humboldt White Oak Opening. Along Kinsey Ridge. 1238 Comment
  UC1198163  Dichelostemma congestum Joseph P. Tracy 1914-5-14 4446 Humboldt Fort Seward Northern Coast Ranges 121 Comment
  HSC38482  Dichelostemma ida-maia D. E. Anderson, J. P. Smith 1971-6-18 - 1062 Humboldt Chezem Rd., about 3 mi. E of bridge over Redwood Creek Comment
  HSC60039  Dichelostemma ida-maia M. A. Baker 1978-5-6 495 Humboldt 2 km. W of Weitchpec along Klamath River. Comment
  CAS-BOT-BC501016  Dichelostemma ida-maia Lyman Benson 1930-7-18 2188 Humboldt West of Willow Creek, Seaward N. Coast, west of Trinity River 457 Comment
  HSC71603  Dichelostemma multiflorum M. A. Baker 1980-6-26 2408 Humboldt Near Sims Creek 610 Comment
  POM273545  Digitalis purpurea Lyman D. Benson 1929-7-19 1879 Humboldt Mouth of Matole [Mattole] River. Comment
  SEINET4095000  Digitalis purpurea O. M. Clark 1932-1 5315 Humboldt South Eureka. Comment
  CAS-BOT-BC208999  Digitaria sanguinalis Henry M. Pollard 1948-7-27 s.n. Humboldt Orleans Comment
  UCD64093  Digitaria sanguinalis Joseph P. Tracy 1942-9-13 17316 Humboldt Eureka. 30 Comment
  CAS-BOT-BC150345  Diplacus aurantiacus C. C. Harris; S. K. Harris 1936-6-9 s.n. Humboldt Above Carlotta 60 Comment
  CAS-BOT-BC150350  Diplacus aurantiacus L. R. Abrams 1916-7-18 6072 Humboldt Fortuna Comment
  CAS-BOT-BC153238  Diplacus kelloggii Doris K. Kildale 1926-4-10 1786 Humboldt Bug Creek 792 Comment
  CAS-BOT-BC153325  Diplacus layneae Henry M. Pollard 1946-9-2 s.n. Humboldt Orleans Mt. Trail 1524 Comment
  UC1052467  Disporum smithii H. E. and S. T. Parks 1952-5 24452 Humboldt Trinidad, Spruce Cove Spruce Cove; Trinidad, Spruce Cove 60 Comment
  UC30078  Disporum smithii Mrs. M. H. Manning 1901-4-1 12 Humboldt near Hupa Comment
  RSA68743  Disporum smithii Victor Duran 1933-5-12 3413 Humboldt Bull Creek, at South Fork of the Eel River Comment
  UC666968  Disporum smithii Joseph P. Tracy 1933-5-21 12209 Humboldt McClellan Mountain 670 Comment
  HSC2192  Distichlis spicata J. P. Tracy 1933-8-22 12989 Humboldt Mouth of Eel River. 3 Comment
  HSC85760  Dodecatheon hendersonii R. Earing, C. Cavanaugh, C. Collins 1987-3-6 3 Humboldt Gray's Falls Campground, approx. 10 mi. E of Willow Creek on Hwy. 299, along the Trinity River. 244 Comment
  POM126114  Dodecatheon hendersonii Joseph P. Tracy 1922-4-30 5994 Humboldt Trinity River Valley, near Willow Creek. 152 Comment
  RSA654125  Downingia yina Beecher Crampton 1956-6-26 3651 Humboldt Margin of Snow's Lake, 3.5 miles east of Seigler Springs Comment
  UC183604  Drosera rotundifolia Mrs. Alma Bonstell 1912-8-5 Humboldt Christmas Prairie Northern Coast Ranges 914 Comment
  HSC18756  Drymocallis glandulosa Lincoln Constance 1934-6-15 878 Humboldt Summit of Grasshopper Peak, S Fork Eel River, Bull Creek region 976 Comment
  HSC32345  Drymocallis rhomboidea D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5638 Humboldt Senteney Rock, a large barren Franciscan Rock along Swayback Ridge. Comment
  CAS-BOT-BC70873  Dryopteris arguta Doris K. Kildale 1928-2-19 4264 Humboldt between Little River & Moonstone Beach Comment
  CAS-BOT-BC71053  Dryopteris expansa John Thomas Howell; Gordon H. True; Lewis S. Rose 1972-6-5 48820 Humboldt Patrick Point State Park Comment
  CAS-BOT-BC71055  Dryopteris expansa Mrs. H. C. Cantelow 1936-5-18 1378 Humboldt 8 mi. N. of Orick Comment
  UC1239775  Dryopteris expansa Joseph P. Tracy 1931-3-15 9286 Humboldt on Van Duzen River Strong's Station; Northern Coast Ranges 91 Comment
  UC197923  Dryopteris expansa Joseph P. Tracy 1914-6-7 4491 Humboldt N Fork Eel River Alton; Northern Coast Region 30 Comment
  CAS-BOT-BC428298  Dudleya farinosa W. R. Dudley 1899-1-1 s.n. Humboldt Trinidad Head Comment
  UCD60874  Echinochloa crus-galli H. E. Parks Date Unknown 24213 Humboldt Spruce Cove, Trinidad. Comment
  UC1100621  Eleocharis acicularis Malcolm A. Nobs and S. Galen Smith 1949-8-9 1243 Humboldt town of Blue Lale Mad River (marshy pond on s side) Comment
  UC668025  Eleocharis macrostachya Joseph P. Tracy 1927-7-17 8284 Humboldt Three Cabins North Coast Ranges (grassy slopes on lower western foothills of Chaparral Mountain) 457 Comment
  CAS-BOT-BC113113  Eleocharis obtusa Henry M. Pollard 1946-8-22 s.n. Humboldt Ullathorne Riffle, Klamath River, Orleans region Comment
  SEINET200968  Eleocharis obtusa Joseph P. Tracy 1911-7-7 3401 Humboldt 3 miles northwest of junction of Willow Creek with Trinity River and near Beebe's Ranch. 914 Comment
  RSA53823  Eleocharis obtusa var. engelmannii Henry M. Pollard s.n. Humboldt Near Orleans. Comment
  CAS-BOT-BC227346  Elymus elymoides Joseph P. Tracy 1935-7-23 14134 Humboldt Trinity Summit. Open places at Corral Prairie 1584 Comment
  RSA10127  Elymus elymoides Joseph P. Tracy 1930-7-19 8955 Humboldt South Fork Mountain; barren rocky places along summit near Blake Lookout. 1707 Comment
  HSC1804  Elymus glaucus William J. Ferlatte, B. D. Rogers 1966-6-15 2107 Humboldt Larabee Valley 762 Comment
  UC38194  Elymus glaucus Joseph Burtt Davy and Walter C. Blasdale 1899-6-19 5661 a Humboldt Hoopa Mt. Comment
  SEINET4674729  Elymus hispidus Thomas Nelson, Jane Nelson 1976-7-26 3023 Humboldt Trinity-Humboldt Co. line.; 0 1615 Comment
  UC33878  Elymus multisetus Chesnut and Drew 1888-7-21 Humboldt S. Fork Mt. Comment
  SEINET200978  Elymus virescens Joseph P. Tracy 1938-6-17 15959 Humboldt Cape Mendocino. South of point of Cape. 3 Comment
  HSC35708  Epilobium brachycarpum Thomas W. Nelson, B. Reinhardt 1975-7-30 2117 Humboldt E of Pilot Rock Comment
  HSC98714  Epilobium brachycarpum Cara Witte 2007-8-1 612 Humboldt White Oak Opening. Along Kinsey Ridge. 1257 Comment
  UC583055  Epilobium brachycarpum P. A. Munz 1936-8-13 14381 Humboldt 10 mi w Willow Creek Comment
  UC146138  Epilobium ciliatum subsp. ciliatum J. P. Tracy 1909-8-15 3075 Humboldt Immediate vicinity of Eureka 0 Comment
  UC198608  Epilobium ciliatum subsp. ciliatum Joseph P. Tracy 1916-8-20 4753 Humboldt Eureka Northern Coast Ranges 0 Comment
  RSA225519  Epilobium ciliatum subsp. ciliatum P. A. Munz 1936-8-13 14380 Humboldt 10 miles west of Willow Creek. 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
  RSA755161  Epilobium ciliatum subsp. glandulosum Robert F. Thorne, P. Everett 1965-8-9 35347 Humboldt Along Hwy 101 about 3 miles N of Eureka; 2 Comment
  HSC103280  Epilobium ciliatum subsp. glandulosum John McRae 2012-9-7 1270 Humboldt Six Rivers National Forest, Lower Trinity District, Forest Service Road 5N10, at the crossing of Willow Creek. 1294 Comment
  CHSC31296  Epilobium ciliatum subsp. watsonii Mark Stopher 1980-7-2 123 Humboldt Along Elk River near Hwy 101 bridge. 1 Comment
  HSC23493  Epilobium ciliatum subsp. watsonii R. A. Vanbianchi 1971-9-10 84 Humboldt Along Fieldbrook Rd. .7 mi. from Jct. with old Hwy. 299 Comment
  HSC49656  Epilobium ciliatum subsp. watsonii J. P. Smith 1971-10-6 4952 Humboldt At the end of Murray Rd., McKinleyville Comment
  HSC16316  Epilobium densiflorum D. E. Anderson 1962-7-14 2253 Humboldt About 3 mi. E of Kneeland Comment
  HSC56400  Epilobium minutum Terry Griswold, Butler 1979-7-11 6984 Humboldt Near Snow Camp Lake, close to the town of Willow Creek 1393 Comment
  CAS-BOT-BC165947  Epilobium septentrionale J. Clausen 1932-9-18 685 Humboldt 2 miles southeast of Petrolia at the bridge across Mattolle River Comment
  POM134801  Epilobium septentrionale Carl Duncan 1920-9-22 s.n. Humboldt Hoopa Indian Reservation, Hoopa Valley Comment
  HSC60046  Equisetum arvense M. A. Baker 1978-5-6 508 Humboldt 2 km. W of Weitchpec along Klamath River. Comment
  UC667933  Equisetum telmateia subsp. braunii Joseph P. Tracy 1937-6-26 15361 Humboldt at Willow Creek Willow Creek; Trinity River Valley 152 Comment
  HSC99645  Equisetum telmateia subsp. braunii N. D. Dennis 1965-4-8 14 Humboldt Old Arcata Rd., 1 mi. S of Arcata Comment
  UC1103228  Eragrostis cilianensis Joseph P. Tracy 1931-9-7 9654 Humboldt Trinity River Valley at Willow Creek; Northern Coast Ranges, Trinity River Valley at Willow Creek 152 Comment
  UC249866  Eragrostis pectinacea var. pectinacea Joseph P. Tracy 1924-8-31 6835 Humboldt Klamath River at Bluff Creek; Northern Coast Ranges, Klamath River, Bluff Creek 91 Comment
  HSC5490  Erechtites glomeratus H. E. Parks Aug 1941 24189 Humboldt Trinidad Comment
  RSA167387  Erechtites glomeratus Joseph P. Tracy 1950-9-10 19360 Humboldt Bear River Ridge, 1 mile north of Capetown. 305 Comment
  RSA20844  Erechtites glomeratus C. B. Wolf 1937-6-18 8884 Humboldt Table Bluff between Humboldt Bay and Eel River 30 Comment
  RSA638987  Erechtites glomeratus R. F. Thorne, Percy C. Everett 1965-8-8 35239 Humboldt N. edge of Eureka, E. of Hwy. 101 5 Comment
  CAS-BOT-BC299915  Erechtites minimus J. Clausen 1932-9-18 677 Humboldt Around Ferndale 22 miles ousth of Eureka 213 Comment
  RSA89771  Erechtites minimus P. A. Munz 1954-7-25 19871 Humboldt On sand dunes at Humboldt Lighthouse south of Samoa. Comment
  HSC98862  Eremogone congesta var. congesta Cara Witte 2008-7-30 961 Humboldt Spike Buck Mountain. Forest Service Road 5N18. 1/2 mile from intersection with National Forest 1. 1589 Comment
  POM126125  Ericameria arborescens subsp. arborescens Joseph P. Tracy 1924-8-24 6827 Humboldt Trinity River Valley, near Willow Creek 183 Comment
  UC1223013  Erigeron aliceae Joseph P. Tracy 1949-8-11 18487 Humboldt 1.5 mi se of Snow Camp (along creek running through fir woods near the C. M. Preston place) 1463 Comment
  CAS-BOT-BC296107  Erigeron foliosus var. confinis Carl D. Duncan 1920-9-22 s.n. Humboldt Hoopa Valley Comment
  CAS-BOT-BC296112  Erigeron foliosus var. confinis Joseph P. Tracy 1935-6-23 13967 Humboldt French Camp Ridge 1066 Comment
  UC1223141  Erigeron foliosus var. confinis Joseph P. Tracy 1947-7-5 17785 Humboldt Ridge top, 1 mi w Mud Springs; Trinity Summit Comment
  UC673210  Erigeron foliosus var. confinis Lincoln Constance and Reed C. Rollins 1942-5-12 2896 Humboldt 1 mi s Somes Bar (bluffs at junction of rivers); Klamath-Siskiyou region, Klamath and Salmon rivers 152 Comment
  UC581721  Erigeron foliosus var. mendocinus Joseph P. Tracy 1931-5-17 9433 Humboldt near Willow Creek; Trinity River 152 Comment
  HSC31557  Erigeron glaucus Glenn McGourty 1974-4-27 32 Humboldt Along side of Mattole River Comment
  UC204830  Erigeron glaucus Joseph P. Tracy 1918-7-1 4972 Humboldt 3 mi s of point of cape Cape Mendecino (on sandy places along ocean shore) 3 Comment
  UC581716  Erigeron inornatus var. inornatus Joseph P. Tracy 1933-7-26 12917 Humboldt Grouse Mountain 1630 Comment
  HSC5562  Erigeron inornatus var. inornatus M. H Manning 1901-7-25 311 Humboldt Bald Hill near Hoopa Comment
  RSA0010343  Erigeron klamathensis Joseph P. Tracy 1937-7-24 15515 Humboldt Trinity Summit, 2 miles SE of Devil's Hole. 1585 Comment
  CAS-BOT-BC214583  Erigeron philadelphicus Doris K. Kildale 1926-5-31 2023 Humboldt Miranda on South Fork of Eel River Comment
  UC1223008  Erigeron robustior Joseph P. Tracy 1951-6-26 19585 Humboldt extreme head of Redwood Creek; , Board Camp Mountain Comment
  UC1118185  Erigeron strigosus var. strigosus H. L. Person 1932-8-28 Humboldt e Mad River bridge; Eureka Quadrangle, Korbel Comment
  CAS-BOT-BC224258  Eriodictyon californicum Henry M. Pollard 1945-9-1 s.n. Humboldt Road to Redcap Creek Comment
  HSC24402  Eriodictyon californicum J. O. Sawyer 1970-6-24 2224 Humboldt Ridge on Big Hill Rd., E of Hoopa 1189 Comment
  RSA44298  Eriodictyon californicum H. M. Pollard 1945-9-1 s.n. Humboldt Road to Redcap Creek. Comment
  RSA256584  Eriodictyon californicum D. E. Anderson 1972-6-20 5737 Humboldt Along the Redwood Valley-Hoopa Rd. east of the summit. Comment
  HSC55185  Eriogonum compositum G. L. Clifton, Griswold 1979-8-2 12234 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  HSC99535  Eriogonum compositum K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-28 200 Humboldt Near North Trinity Mtn, along trail to Water Dog Lakes, Six Rivers National Forest. 1829 Comment
  HSC97578  Eriogonum compositum var. compositum Cara Witte 2007-5-29 140 Humboldt Along National Forest 1 near Kinsey Ridge. 1/2 mile south of cattle guard. 1369 Comment
  CAS-BOT-BC248808  Eriogonum compositum var. compositum Volney Rattan 1883-6-1 s.n. Humboldt Summit bet. Mad R. & Pilot Cr. Comment
  CAS-BOT-BC259149  Eriogonum latifolium Marcus E. Jones 1931-7-12 28806 Humboldt Alton Comment
  CHSC55905  Eriogonum latifolium L. P. Janeway 1987-7-31 2539 Humboldt Vicinity of Eurekal North Spit of Humboldt Bay near the SE corner of Eureka City Airport. 3 Comment
  POM188142  Eriogonum latifolium Marcus E. Jones 1931-7-12 28806 Humboldt Alton. Comment
  HSC103088  Eriogonum nudum var. nudum Sydney Carothers 2014-6-22 5 Humboldt Six Rivers National Forest, Lassics Botanical Area; on saddle between Peak 1 and Mt. Lassic 1796 Comment
  UC1198142  Eriogonum nudum var. nudum Joseph P. Tracy 1933-7-25 12896 Humboldt Grouse Mountain 1524 Comment
  UC146155  Eriogonum nudum var. nudum Joseph P. Tracy 1908-6 2811 Humboldt opposite Buck Mountain (Valley of Van Duzen River); North Coast Ranges, Valley of Van Duzen River 304 Comment
  CDA22632  Eriogonum nudum var. oblongifolium T. R. Haig 1960-6-19 Humboldt Kneeland School. 0 Comment
  SEINET3404935 Image available Eriogonum nudum var. pubiflorum Joseph P. Tracy 1916-6-20 4729 Humboldt Dobbyn Creek Comment
  HSC98668  Eriogonum umbellatum var. nelsoniorum Cara Witte 2008-7-14 888 Humboldt Horse Mountain Botanical Area. Forest Service Road 6N18. 1431 Comment
  HSC55116  Eriogonum umbellatum var. stellatum Gilbert Muth 1979-8-1 11885 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1877 Comment
  HSC55126  Eriogonum umbellatum var. stellatum G. L. Clifton, Griswold 1979-8-1 11930 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1692 Comment
  HSC55177  Eriogonum umbellatum var. stellatum Gilbert Muth 1979-8-1 12182 Humboldt Near Red Cap Prairie, close to the town of Hoopa 1780 Comment
  HSC63845  Eriogonum umbellatum var. umbellatum M. A. Baker 1979-6-26 913 Humboldt S facing ridge Comment
  HSC40976  Eriophorum crinigerum J. O. Sawyer 1970-6-24 2216 Humboldt Big Hill Rd., E of Hoopa 1189 Comment
  BLMAR181  Eriophyllum lanatum var. achilleoides Donald Hazlett 1994-6-7 181 Humboldt King range, near horse Mt. Ridge rd 670 Comment
  CAS-BOT-BC301015  Eriophyllum lanatum var. achilleoides Doris K. Kildale 1926-5-9 1980 Humboldt Kneeland Prairie 762 Comment
  JEPS34743  Eriophyllum lanatum var. achilleoides Lincoln Constance 1934-5-26 678 Humboldt s end of Dyerville Bridge (South Fork of Eel River); Bull Creek Region, South Fork Eel River 45 Comment
  UC1199141  Eriophyllum lanatum var. achilleoides Joseph P. Tracy 1934-7-6 13664 Humboldt Iaqua; North Coast Ranges, Iaqua 609 Comment
  POM358028  Eriophyllum lanatum var. aphanactis Thomas W. Nelson, Jane P. Nelson 1977-7-1 3579 Humboldt Head of North Fork of Conley Creek, W side of road N from Alder Spring. 1463 Comment
  CAS-BOT-BC301181  Eriophyllum lanatum var. arachnoideum Doris K. Kildale 1927-6-25 3541 Humboldt Shelter Cove Comment
  CAS-BOT-BC301922  Eriophyllum staechadifolium Joseph P. Tracy 1918-7-1 4971 Humboldt Cape Mendocino. Southwestern slopes, fronting the ocean, three miles south of point of the cape 30 Comment
  CDA17338  Eriophyllum staechadifolium B. Freeman 2004-8-2 PDR 1403792 Humboldt North Coast; Petrolia Road, Lost Coast, Petrolia. 0 Comment
  UC642240  Eryngium aristulatum var. aristulatum Joseph P. Tracy 1938-8-20 16125 Humboldt Alton 30 Comment
  HSC102600  Erysimum capitatum M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-28 1587 Humboldt Slopes above Bret Hole and below trail 6E18, 1.5 km SSW of Trinity Summit. 1778 Comment
  UC1199177  Erysimum capitatum Joseph P. Tracy 1927-6-12 8149 Humboldt Horse Mountain Northern Coast Ranges 1371 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
  HSC6760  Erysimum capitatum var. capitatum Francis Winter 1960-4-24 Humboldt 2 mi. SE of Burnt Ranch, Hoopa Indian Reservation 381 Comment
  CAS-BOT-BC153743  Erythranthe alsinoides Doris K. Kildale 1926-3-21 1576 Humboldt Kneeland Prairie - Summit 853 Comment
  SEINET13694469 Image available Erythranthe alsinoides Joseph P. Tracy 1923-1 6258 Humboldt Kneeland prairie 762 Comment
  SEINET13754736 Image available Erythranthe nasuta Joseph P. Tracy 1923-1 6218 Humboldt Kneeland Prairie 762 Comment
  HSC50933  Erythronium californicum G. L. Clifton, Overton 1979-6-3 3755 Humboldt Near Pine Mtn., close to the town of Forest Glen 1495 Comment
  HSC15489  Erythronium citrinum var. citrinum J. R. Eichelberger 1964-4-10 40 Humboldt 4 mi. S of Weitchpec on Hwy. 96 Comment
  HSC40548  Erythronium grandiflorum subsp. grandiflorum Thomas W. Nelson, Jane P. Nelson 1976-5-23 Humboldt Beside Rd. 1S07 at pass between Black Lassic and E peak of Signal Peak group 1707 Comment
  HSC96197  Erythronium grandiflorum subsp. grandiflorum Jennifer Lumbert, James Robinson 2005-6-15 14 Humboldt NE of Grouse Mtn. 1490 Comment
  JEPS500  Erythronium revolutum Joseph P. Tracy 1927-5-15 8064 Humboldt near summit on road from Hoopa w to Bair's (at head of Pine Creek); Hoopa Mountain, Pine Creek 1066 Comment
  UC1197645  Erythronium revolutum Joseph P. Tracy 1924-3-30 6634 Humboldt near Bridgeville; Northern Coast Ranges 182 Comment
  HSC104325  Erythronium revolutum James Regan, Humboldt Redwood Co., LLC 2007-5-9 23 Humboldt Kneeland 854 Comment
  HSC26879  Eschscholzia californica Clifton Raymond Chesbrough 1973-6-19 86 Humboldt 1/2 mi. S of Trinidad along the coast Comment
  UC184792  Eschscholzia californica Joseph P. Tracy and Ernest B. Babcock 1912-5-11 3600 Humboldt near Hydesville; Northern Coast Region 60 Comment
  HSC76043  Eucephalus glabratus Overton, Butler 1979-8-2 12568 Humboldt Near Bret Hole, close to the town of Hoopa 1554 Comment
  HSC58766  Eucephalus ledophyllus Terry Griswold 1979-7-26 10220 Humboldt Near Salmon Mtn., close to the town of Forks of Salmon 1981 Comment
  UC204747  Euchiton sphaericus Joseph P. Tracy 1918-9-29 5103 Humboldt 4 mi above the mouth South Fork of Eel River; Northern Coast Ranges, South Fork of Eel River 60 Comment
  CAS-BOT-BC206801  Euonymus occidentalis Henry M. Pollard 1948-7-22 s.n. Humboldt Perch Creek near Orleans Comment
  HSC102197  Euonymus occidentalis var. occidentalis M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-4 1111 Humboldt Along trail (abandoned Road 6E74) from Andy's Camp to Patterson Meadows 1563 Comment
  UC18050  Euonymus occidentalis var. occidentalis C. C. Marshall 1888-1 Humboldt Mad R. Mts. Comment
  UC302052  Euphorbia peplus Joseph P. Tracy 1926-5-15 7473 Humboldt Eureka; North Coast Ranges 0 Comment
  UC1198980  Euphorbia spathulata Joseph P. Tracy 1927-5-8 7977 Humboldt Phillipsville Northern Coast Ranges, South Fork of Eel River (slopes and groves facing South Fork of Eel River) 121 Comment
  UC302983  Euphorbia spathulata Joseph P. Tracy 1926-5-2 7431 Humboldt near South Fork; Trinity River Valley 182 Comment
  UC249850  Eurybia radulina Joseph P. Tracy 1924-8-10 6813 Humboldt at Blue Slide, on Van Duzen River Van Duzen River 91 Comment
  CAS-BOT-BC310679  Euthamia occidentalis Joseph P. Tracy 1927-10-8 8389 Humboldt Arcata Bottom 15 Comment
  HSC31183  Festuca californica D. E. Anderson 1972-6-20 5752 Humboldt Along the Redwood Valley-Hoopa Rd., E of the summit. Comment
  UC34070  Festuca californica J. P. Tracy 1901-6-23 1175 Humboldt immediate vicinity Eureka 0 Comment
  UCD65901  Festuca californica subsp. californica Joseph P. Tracy 1938-6-13 15903 Humboldt Horse Mountain. 1432 Comment
  HSC98939  Festuca californica var. californica Cara Witte 2008-7-14 901 Humboldt White Oak Opening. Along Kinsey Ridge. 1257 Comment
  UC525641  Festuca elmeri Joseph P. Tracy 1927-5-8 7962 Humboldt facing South Fork of Eel River; Northern Coast Ranges, Phillipsville 121 Comment
  UC525674  Festuca idahoensis Joseph P. Tracy 1933-5-24 12291 Humboldt 3 mi e Gasquet (along Smith River, at 18-Mile Creek); Smith River, 18-Mile Creek 152 Comment
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Jul 26 2012
  UC535634  Festuca idahoensis Joseph P. Tracy 1932-7-12 10447 Humboldt Corral Ranch Klamath Mountains, Trinity Summit 1524 Comment
  CAS-BOT-BC278808  Festuca occidentalis Victor Duran 1933-5-11 3410 Humboldt Van Duzen River, near Bridgeville Comment
  RSA123495  Festuca occidentalis H. S. Yates 1936-6-17 5700 Humboldt Lower N.W. slope of Buck Mountain 793 Comment
  UC1145212  Festuca occidentalis Joseph P. Tracy 1937-5-30 15305 Humboldt 5 mi n Blocksburg; Larrabee Creek 365 Comment
  UCD66182  Festuca occidentalis Victor Duran 1933-5-11 3410 Humboldt Van Duzen River, near Bridgeville. Comment
  CAS-BOT-BC278963  Festuca rubra David D. Keck 1948-7-1 5970 Humboldt South side of Big Lagoon Comment
  UC33725  Festuca rubra Joseph Burtt Davy and Walter C. Blasdale 1899-6-19 5685 Humboldt Hoopa Mt. Comment
  UC525639  Festuca rubra Joseph P. Tracy 1927-7-4 8238 Humboldt Lone Star Creek North Coast Ranges, Iaqua District 609 Comment
  CAS-BOT-BC282516  Festuca subbiflora W. R. Dudley 1899-6-20 s.n. Humboldt Bull Creek and Eel River Comment
  RSA183617  Fragaria californica D. E. Anderson 1965-5-1 3558 Humboldt Along Hwy. 96, 1.9 mi. N of Willow Creek. Comment
  CAS-BOT-BC453524  Fragaria chiloensis Bolemanson 1908-5-15 s.n. Humboldt Samoa Comment
  HSC18615  Fragaria vesca J. J. Wagoner 1965-5-1 25 Humboldt 6 mi. W of Willow Creek along Hwy. 299 Comment
  HSC44523  Fragaria vesca Brad Klipfel 1973-7-1 130 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC89552  Fragaria vesca M. Roantree 1985-4-25 12 Humboldt E side of Trinidad Head Comment
  HSC61635  Fragaria virginiana Ruby Van Deventer 1959-6-20 Humboldt Humboldt-Del Norte Co. line, Onion Lake 1067 Comment
  UC1612458  Fragaria virginiana Gunter Staudt and H. Ahmadi 1989-5-15 313 Humboldt n of Trinidad (along Highway 101, near Seawood Drive exit); Highway 101 Comment
  SBBG28961  Frangula californica subsp. californica C. B. Wolf 1927-8-30 Humboldt 3 mi S of Thorn on the old coast rd Comment
  CAS-BOT-BC53400  Frangula californica subsp. occidentalis Joseph P. Tracy 1941-9-4 17012 Humboldt Willow Creek Canyon, along Trinity Highway 609 Comment
  CAS-BOT-BC59954  Frangula purshiana Carl B. Wolf 1934-6-30 5818 Humboldt Mendocino. 22 Comment
  CAS-BOT-BC59999  Frangula purshiana C. B. Wolf 1931-8-30 2373 Humboldt E. side of Eureka on P. St., one block n. of Henderson St. 30 Comment
  UC15015  Fritillaria affinis Mrs. M. H. Manning 1900-1 Humboldt near Hupa Comment
  UC429292  Fritillaria affinis Mrs. M. H. Manning 1901-1 9 Humboldt near Hupa Comment
  HSC15540  Fritillaria affinis R. A. Rasp 1964-4-5 31 Humboldt 5 mi. E of Klamath Trinity Junction at Bluff Creek Public Camp Comment
  HSC97504  Fritillaria affinis C. Witte 2007-5-22 81 Humboldt Cold Spring. 1/2 mile south of Titlow Hill. 1392 Comment
  CDA38142  Fuchsia magellanica G. D. Barbe, T. C. Fuller 1974-6-18 1872 Humboldt Loop trail above Fern Canyon, Prairie Creek Redwood State Park, 7.1 miles west of Highway 101 on Fern Canyon Road, 5 miles south of Klamath River. 0 Comment
  HSC22537  Galium aparine D. E. Anderson, J. P. Smith 1970-5-10 5059 Humboldt Along road from Redwood Creek to Hoopa, 1-3 mi. W of Hoopa Comment
  HSC53906  Galium aparine Griswold, Butler 1979-7-11 6913 Humboldt Near Snow Camp Mtn., close to the town of Willow Creek. 1320 Comment
  HSC70928  Galium aparine R. York 1980-5-18 579 Humboldt Near Black Mtn 792 Comment
  HSC73126  Galium aparine M. A. Baker 1980-5-18 1305 Humboldt Near Black Mtn. 1006 Comment
  UC416655  Galium aparine Joseph Burtt Davy and Walter C. Blasdale 1899-6-10 5403 Humboldt Hubbard's Station North Coast Ranges Comment
  HSC19793  Galium aparine Joel W. Reinhard 1966-4-30 29 Humboldt N of College Cove Comment
  UC1196097  Galium bifolium Joseph P. Tracy 1930-7-16 8906 Humboldt near McKay Camp; South Fork Mountain 1676 Comment
  RSA47106  Galium californicum Doris K. Kildale 1925-5-23 585 Humboldt Eureka. Comment
  RSA698804  Galium californicum J. R. Bruff 1937-8-17 916 Humboldt Richardson Grove. Comment
  JEPS52865  Galium californicum subsp. californicum Lauramay T. Dempster and Jean Colton 1963-8-7 3886 Humboldt 0.8 mi w Briceland (on road to Shelter Cove) Comment
  HSC37909  Galium divaricatum Peter Sorensen 1976-6-19 Humboldt Woodley Island Comment
  HSC69762  Galium divaricatum Thomas W. Nelson, Jane P. Nelson 1977-9-4 3746 Humboldt Willow Creek Comment
  HSC19848  Galium mollugo H. E. Parks, J. P. Tracy 1937-7-16 11451 Humboldt Near Trinidad 61 Comment
  JEPS52823  Galium muricatum Lauramay T. Dempster and G. L. Stebbins 1963-7-9 3852 Humboldt 1/2 mi e Dinsmores (on Hwy 36) 731 Comment
  JEPS52848  Galium muricatum Lauramay T. Dempster and G. L. Stebbins 1963-7-10 3858 Humboldt 6.8 mi w mouth of Bull Creek; Bull Creek (settlement) 91 Comment
  JEPS6494  Galium parisiense Joseph P. Tracy 1937-7-11 15421 Humboldt Garberville 152 Comment
  HSC39330  Galium parisiense J. P. Smith 1976-10-30 8994 Humboldt Mad River, E of Essex Lane exit. Comment
  HSC70963  Galium porrigens Gail Newton 1980-7-15 1585 Humboldt Near Sims Mtn. 1311 Comment
  HSC61722  Galium porrigens var. porrigens Ruby Van Deventer 1963-7-1 Humboldt Along Klamath River at Pecwan. Comment
  HSC99319  Galium porrigens var. porrigens C. B. Wolf 1927-8-30 1225 Humboldt 2 mi. S of Petrolia on the Matole River near the road crossing the river Comment
  SD70521  Galium porrigens var. porrigens Lauramay T. Dempster, G. L. Stebbins 1963-7-8 3843 Humboldt Willow Creek at Hwy. crossing north of Willow Creek town 459 Comment
  UC196081  Galium trifidum Joseph P. Tracy 1927-7-10 8246 Humboldt Alton Northern Coast Region 30 Comment
  HSC34703  Galium triflorum Thomas W. Nelson 1974-7-20 1701 Humboldt McKeown Ranch N of Dinsmore Comment
  HSC58207  Galium triflorum Walter Overton 1979-8-1 12322 Humboldt Near Mill Creek, Middle Fork, close to the town of Hoopa. 1341 Comment
  HSC98132  Galium triflorum Cara Witte 2007-6-27 374 Humboldt Near Grouse Mountain. Along Forest Service Road 4N32. Approximately 1/2 mile south of intersection with 5N04 and 4N32E. 1425 Comment
  BLMAR224  Galium triflorum Jennifer Anthony-Wheeler 1996-7-11 224 Humboldt N. Dobbyn creek, shady areas of forest floor throughout understory 1005 Comment
  CAS-BOT-BC303400  Gamochaeta ustulata Ashley C. Browne 1936-6-11 s.n. Humboldt Patrick's Point State Park Comment
  CAS-BOT-BC303396  Gamochaeta ustulata M. S. Jussel 1931-5-2 s.n. Humboldt Near Garberville Comment
  CAS-BOT-BC194526  Garrya elliptica L. R. Abrams; R. Bacigalupi 1922-6-25 8293 Humboldt Bluffs north of Big Lagoon Comment
  CHSC19502  Garrya elliptica Gene S. Van Horn 1963-1-5 35 Humboldt On W. M. Lanphere's ranch 9 Comment
  UC154097  Garrya elliptica J. P. Tracy 1901-4-14 1030 Humboldt opposite Eureka (Ocean Beach at Samoa); Samoa Comment
  UC21582  Garrya elliptica W. C. Blasdale 1896-6-3 Humboldt Eureka; w Eureka Comment
  UC906741  Garrya elliptica Joseph P. Tracy 1943-7-18 17441 Humboldt bank of Big Lagoon 6 Comment
  UCSB15521  Garrya elliptica Breedlove, Dennis 1962-6-7 Humboldt 1.5 miles south of Samosa on peninsula on western side of Humboldt Bay. Comment
  UC668298  Garrya fremontii Joseph P. Tracy 1933-3-5 10918 Humboldt Alton North Coast Ranges (along Van Duzen River) 30 Comment
  UCD39985  Garrya fremontii Rodney Gale Myatt 1971-9-22 1200 Humboldt Along Salmon River, southeast of Somes Bar, and northeast of Hoopa Reservation. 426 Comment
  CAS-BOT-BC282615  Gastridium phleoides Henry M. Pollard 1944-9-17 s.n. Humboldt Near Orleans Comment
  CAS-BOT-BC58914  Gaultheria shallon Elizabeth Parsons Hawver 1915-6-1 s.n. Humboldt Carlotta Comment
  CHSC83107  Gaultheria shallon A. T. Leiser 1980-7-8 Humboldt Redwood National Park, Burm Creek. Comment
  HSC40118  Gaultheria shallon Dan O'Brien 1962-5-9 Humboldt 4 1/2 mi. E on Fickle Hill Rd. Comment
  POM118415  Gaultheria shallon Marcus E. Jones 1924-4-26 s.n. Humboldt Eureka. Comment
  POM285360  Gaultheria shallon Lyman Benson 1928-7-10 583 Humboldt Clam Beach, Trinidad. 8 Comment
  UC1193364  Gaultheria shallon P. Zinke 1950-9-21 164 Humboldt Outside National Forest, Kerr Peak Kerr Peak; Outside National Forest, Kerr Peak 609 Comment
  UC1537150  Gaultheria shallon Gordon H. True Jr. 1936-5-11 468 Humboldt 12 mi w of Miranda 396 Comment
  UC153966  Gaultheria shallon Joseph P. Tracy 1908-6 2863 Humboldt opposite of Buck Mountain (Valley of Van Duzen River); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  UC1541491  Gaultheria shallon Harold E. Parks March 1934 4832 Humboldt Trinidad, Spruce Cove Spruce Cove; Trinidad, Spruce Cove Comment
  UC527560  Gaultheria shallon C. B. Wolf 1931-8-29 Humboldt near summit of Orick Hill, on road to Weitchpec Orick Hill 304 Comment
  SEINET11974903  Gaultheria shallon Unknown 1936-1 13377 Humboldt near Fieldsfandring Comment
  HSC54658  Gayophytum diffusum subsp. parviflorum Overton, Butler 1979-7-25 9877 Humboldt Near Sims Mtn., close to the town of Willow Creek 1295 Comment
  UC562500  Gayophytum diffusum subsp. parviflorum Joseph P. Tracy 1933-7-26 12919 Humboldt Grouse Mountain North Coast Ranges 1524 Comment
  HSC16406  Gayophytum ramosissimum J. P. Tracy 1933-7-26 12919 Humboldt Grouse Mtn. 1524 Comment
  CAS-BOT-BC208038  Genista monspessulana Joseph P. Tracy 1927-7-24 8301 Humboldt Mattole Valley 152 Comment
  JEPS47039  Gentiana affinis var. ovata W. L. Jepson 1936-8-18 17941 Humboldt s of Eel River mouth; Wildcat Ridge Comment
  HSC75286  Gentiana plurisetosa J. O. Sawyer, D. A. Thornburgh 1980-9-9 4082 Humboldt Mill Creek Lake and surrounding meadows Comment
  UC153981  Gentiana sceptrum J. P. Tracy 1906-7-1 2516 Humboldt immediately vicinity Eureka 0 Comment
  HSC41183  Gentiana sceptrum Robert M. Specht 1976-10-6 546 Humboldt S shore of Big Lagoon on E side of Hwy. 101 Comment
  HSC8647  Geranium dissectum D. B. Bader 1963-4-1 39 Humboldt Second of the Clam Beach Lagoons, W of Hwy. 101, along the R.R. tracks Comment
  UC630470  Geranium dissectum H. E. and S. T. Parks Apr 1938 24118 Humboldt Spruce Cove Trinidad 60 Comment
  UC164809  Geranium molle Joseph P. Tracy 1906-5-6 2436 Humboldt near Hydesville; Northern Coast Region 60 Comment
  RSA75630  Geranium oreganum Albert M. Vollmer, L. Beane 1951-6-6 107 Humboldt On road between Orick and Weitchpec. Comment
  HSC90389  Geranium pusillum Jean Hanson 1980-4-12 41 Humboldt Eureka, Indian Island in Humboldt Bay, W end of island Comment
  UC907950  Gilia capitata subsp. capitata Joseph P. Tracy 1935-7-29 14345 Humboldt brushy ridge 1 mi ne Ranger Station (Trinity Summit); Trinity Summit 1676 Comment
  CAS-BOT-BC226146  Gilia capitata subsp. pacifica J. P. Tracy; H. E. Parks 1930-5-25 0793 Humboldt Near Bridgeville Comment
  RSA23650  Gilia capitata subsp. pacifica C. B. Wolf 1939-7-8 9519 Humboldt Devil's Gate, south of Cape Mendocino. 8 Comment
  RSA742086  Gilia millefoliata Peter L. Morrell 1993-6-9 280 Humboldt North Coast: Samoa Peninsula, near Eureka, along Hwy 255, 1.5 miles south of Samoa intersection, west side of highway 7 Comment
  UC1051593  Gilia millefoliata Joseph P. Tracy 1948-6-12 18067 Humboldt sand dunes near Samoa (on Humboldt Bay); , near Samoa 6 Comment
  BLMAR647  Githopsis specularioides Jennifer Wheeler 2011-6-21 647 Humboldt Lacks Creek, Stormy Saddle Prairie 1158 Comment
  HSC103275  Githopsis specularioides John McRae 2014-5-23 Humboldt Six Rivers National Forest, Hennessy Peak Quad, Forest Service Road 6N20 to Oak Knob. 829 Comment
  UC1409059  Glebionis segetum Robert F. Thorne and P. Everett 1965-8-8 35270 Humboldt n edge of Eureka (e of Hwy. 101) 4 Comment
  UCD132389  Glebionis segetum Lincoln Constance 1934-6-25 927 Humboldt Bull Creek Region, South Fork Eel River, on east side of the road at Englewood across the road from Collins' Englewood Campground. Comment
  RSA246749  Glehnia littoralis subsp. leiocarpa R. F. Thorne, P. Everett 1965-8-9 35304 Humboldt Big Lagoon 3 Comment
  UC1197365  Glehnia littoralis subsp. leiocarpa J. P. Tracy 1901-5-18 1097 Humboldt sand hills of Ocean Beach at Samoa opposite Eureka Comment
  HSC10051  Glyceria declinata B. D. Rogers 1964-4-27 25 Humboldt 0.5 mi. W of Arcata on Samoa Rd. Comment
  HSC34278  Glyceria elata Ken Irwin 1975-8-13 Humboldt Grogans Hole Area Comment
  UCD85137  Glyceria elata Francia Chisaki; Helen K. Sharsmith 1959-8-22 4756 Humboldt Inner North Coast Ranges. In bog at Happy Camp adjacent to Douglas Fir forest. Just over Trinity County line. 914 Comment
  UCD66777  Glyceria occidentalis A. A. Beetle; J. P. Tracy, G. L. Stebbins Jr. 1942-6-2 3461 Humboldt Loleta Swamp, south of Eureka. Comment
  BLMAR713  Glyceria striata Clara Sander 2005-7-13 713 Humboldt Jacoby creek, growing along trail 36 Comment
  HSC99053  Glyceria striata Cara Witte 2008-7-25 931 Humboldt Friday Ridge Road (Forest Service Road 6N08). 1.5 mile north of intersection with Forest Service Road 5N39. 1473 Comment
  RSA249356  Goodyera oblongifolia J. D. Ackerman 1973-8-18 120 Humboldt 2 miles north of Manila Comment
  RSA381800  Goodyera oblongifolia Jane Turner, Francis M. Ball 1962-7-10 1141 Humboldt East Fork Willow Creek Forest Camp, Hwy 299 ca. 5 mi. W of Willow Creek in Six Rivers National Forest. 457 Comment
  CAS-BOT-BC304738  Grindelia hirsutula Alice Eastwood; John Thomas Howell 1936-7-3 3781 Humboldt Eureka Comment
  CAS-BOT-BC304746  Grindelia hirsutula John Thomas Howell 1937-7-31 13720 Humboldt Salt marsh bordering Humboldt Bay at Arcata Comment
  CAS-BOT-BC304758  Grindelia hirsutula Carl B. Wolf 1937-9-9 9305 Humboldt Coast, 2 mi. So. of Cape Mendocino 6 Comment
  CAS-BOT-BC304763  Grindelia hirsutula C. L. Hitchcock; J. S. Martin 1939-7-14 5437 Humboldt At Shelter Cove Comment
  HSC91913  Grindelia hirsutula E. Mackey 1986-12-18 Humboldt Patricks Point State Park; parking lot at Palmer's Point Comment
  JEPS93180  Grindelia hirsutula Margriet Wetherwax and Kevin Downing 1993-8-9 2458 Humboldt Eureka Slough Humboldt Bay (s side, near Bayside Rd. and Myrtle Marsh, at end of road to church, on e side of bay, just n of Eureka) 5 Comment
  UC581777  Grindelia hirsutula Joseph P. Tracy 1930-7-5 8831 Humboldt sw slopes fronting the ocean 3 mi s of point of Cape Mendocino Cape Mendocino (on hillsides up to 500 ft elevation) 30 Comment
  RSA34050  Grindelia hirsutula var. davyi A. A. Heller 1923-7-7 13764 Humboldt Near the S fork of the Eel River, S of Garberville. Comment
  POM359112  Grindelia stricta var. platyphylla M. B. Dunkle 1936-8-18 4813 Humboldt South of Eureka. 91 Comment
  HSC104080  Hackelia bella S. Carothers 2001-6-20 Humboldt Six Rivers National Forest; Lassics Botanical Area, off Rd. 1S11, above Mule Slide Comment
  UC79899  Hackelia californica Joseph P. Tracy 1937-7-25 15548 Humboldt on Ridge 2 mi e of Groves Prairie; Trinity Summit 1524 Comment
  HSC48770  Hackelia micrantha Brad Klipfel 1973-6-10 50 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  CAS-BOT-BC302442  Hazardia whitneyi var. discoidea Henry M. Pollard 1943-8-1 s.n. Humboldt Orleans Mt. 1828 Comment
  UC53952  Helenium bigelovii J. P. Tracy 1901-5-1 1204 Humboldt Humboldt Bay North Coast Ranges, Humboldt Bay 30 Comment
  CAS-BOT-BC306868  Helenium bolanderi Carl B. Wolf 1937-8-10 9089 Humboldt Big Lagoon, bog at state park 6 Comment
  HSC91912  Helenium bolanderi E. Mackey 1986-8-2 Humboldt Patrick's Point State Park; near Ceremonial Rock Comment
  UC34187 Image available Helenium bolanderi H. P. Chandler and J. P. Tracy May 1901 1204 Humboldt Humboldt Bay North Coast Ranges 30 Comment
  JEPS35531  Helenium bolanderi W. L. Jepson 1921-8-7 9325 Humboldt 0.5 to 2 mi back from ocean between Mad River Little River; Dow's Prairie Comment
  UC175986  Helenium bolanderi J. P. Tracy 1912-7-22 3792 Humboldt near Loleta 91 Comment
  UC169301  Helenium puberulum Joseph P. Tracy 1912-8-4 3979 Humboldt near Hydesville; Northern Coast Region 60 Comment
  UC32241  Helenium puberulum C. C. Marshall 1888-1-1 Humboldt Comment
  UC552839  Heliotropium curassavicum Joseph P. Tracy 1935-8-25 14747 Humboldt Stone Lagoon North Coast Ranges, Stone Lagoon 3 Comment
  SEINET4170660 Image available Hemicarpha aristulata Unknown 1931-9-7 9650 B Humboldt Trinity river Valley, at Willow Creek 152 Comment
  HSC53816  Hemizonella minima Griswold, Butler 1979-7-10 6253 Humboldt Near Board Camp Mountain, close to the town of Willow Creek 1494 Comment
  POM160904  Hemizonia clevelandii Joseph P. Tracy 1925-7-12 7200 Humboldt Trinity River Valley, near the South Fork. Northern Coast Ranges. 305 Comment
  CAS-BOT-BC309995  Hemizonia congesta subsp. tracyi Carl B. Wolf 1937-6-14 8813 Humboldt North Coast Range, Kneeland Prairie 822 Comment
  HSC38910  Heracleum maximum J. P. Smith 1970-6-7 3801 Humboldt 0.6 mi. N of Luffenholtz Beach, along Hwy. 101, near Trinidad. Comment
  HSC45914  Hesperocyparis macrocarpa Jerome Peterson 1978-4-16 3 Humboldt HSU Campus Comment
  HSC98091  Heterocodon rariflorum Cara Witte 2007-7-11 476 Humboldt Cold Spring. 1/2 mile south of Titlow Hill. 1391 Comment
  CAS-BOT-BC311081  Heterotheca oregona var. rudis H. M. Pollard 1942-9-12 s.n. Humboldt Near Orleans Comment
  JEPS2472  Heterotheca oregona var. rudis Joseph P. Tracy 1930-7-27 9112 Humboldt near Petrolia; North Coast Ranges, Mattole River 15 Comment
  UC620692  Heterotheca oregona var. rudis S. K. Harris 1938-8-24 881 Humboldt near Fernbridge (sand of Eel River); Eel River Comment
  SBBG45062  Heterotheca sessiliflora subsp. bolanderi C. B. Wolf 1927-8-30 Humboldt 2 mi S of Petrolia on Mattole River near where road crosses river Comment
  HSC20194  Heuchera micrantha P. N. Slattery 1963-4-27 44 Humboldt Clam Beach Comment
  BLMAR81  Heuchera micrantha Jennifer Anthony-Wheeler 1994-6-2 81 Humboldt IAQUA, growing along moist, rocky banks 3/4mi from pvd 853 Comment
  CAS-BOT-BC424196  Heuchera micrantha var. hartwegii Joseph P. Tracy 1947-4-27 17673 Humboldt Gravelly bank at roadside near top of Wolverton Gulch; 1/2 mile W of town. 152 Comment
  UC902009  Heuchera micrantha var. macropetala Joseph P. Tracy 1948-8-15 18139 Humboldt 2 mi e Grove's Prairie; Trinity Summit 1524 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-BC312388  Hieracium albiflorum Doris K. Kildale 1927-7-17 3752 Humboldt Bug Creek 792 Comment
  HSC48819  Hieracium albiflorum Brad Klipfel 1973-7-31 232 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC81930  Hieracium albiflorum Thomas W. Nelson, Jane P. Nelson 1979-7-3 4947 Humboldt Along road to Joe Losey property at junction of Kneeland and Maple Creek Rds. 610 Comment
  UC582413  Hieracium albiflorum Joseph P. Tracy 1930-7-16 8915 Humboldt near McKay Camp; South Fork Mountain 1676 Comment
  CAS-BOT-BC312392  Hieracium albiflorum Doris K. Kildale 1925-8-17 1196 Humboldt Triity Summit 1828 Comment
  POM360469  Hieracium greenei Thomas W. Nelson, Jane P. Nelson 1977-8-6 3714 Humboldt Along the lower south slope of Mt. Lassic (Signal Peak). 1494 Comment
  CAS-BOT-BC316004  Hieracium nudicaule Joseph P. Tracy 1932-7-17 10659 Humboldt Corral Prairie, Trinity Summit 1584 Comment
  UC582422  Hieracium nudicaule Joseph P. Tracy Jul 16 1930-Jul 19 1930 9041 Humboldt near Blake lookout; Northern Coast Ranges, South Fork Mountain 1737 Comment
  CHSC23327  Hippuris vulgaris Robert F. Thorne; P. Everett 1965-8-9 35344 Humboldt Along Hwy. 101 about 3 mi. N of Eureka; in shallow water ca. 1 ft. of ditch along roadside. 1 Comment
  CDA38204  Hippuris vulgaris E. C. Whitney 1962-7-23 s.n. Humboldt Pepperwood; R. Wallen property. 0 Comment
  UC1196930  Hippuris vulgaris Joseph P. Tracy 1934-7-2 13284 Humboldt mouth of Little R. 1 Comment
  HSC79451  Holcus lanatus Kenneth Clark 1980-6-14 673 Humboldt On western slope above Dead Man's Gulch. 152 Comment
  POM291100  Holcus lanatus Lyman Benson 1929-7-14 1797 Humboldt Weott Ranger Station, South Fork Eel River. Comment
  SACT001293  Holcus lanatus Lyle Bibb 1963-5-11 Humboldt Comment
  SEINET181175 Image available Holcus lanatus Bassett Maguire, R Maguire; CB Maguire 1934-6-8 15060 Humboldt Coolidge, Redwood Park. Comment
  HSC58168  Holodiscus discolor G. L. Clifton, Griswold 1979-8-2 12239 Humboldt Near Oregon Creek, close to the town of Hoopa 1663 Comment
  HSC64190  Holodiscus discolor J. O. Sawyer, M. A. Ericksen 1979-6-23 3378 Humboldt Slopes below Mill Creek Lakes 1585 Comment
  RSA85262  Holodiscus discolor F. W. Peirson 1926-7-13 8655 Humboldt Near Blue Lake, Mad River. Comment
  HSC38770  Hordeum brachyantherum J. D. Ackerman 1975-6-10 463 Humboldt 1 mi. N of Samoa Blvd. and Samoa bridge Rd. intersection. S of Manila. Near Railroad tracks Comment
  HSC58607  Hordeum brachyantherum G. L. Clifton, Griswold 1979-7-25 10949 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1784 Comment
  CHSC97957  Horkelia tridentata subsp. flavescens April A. Allard; Gregory D. O'Connell 2005-6-24 16 Humboldt Roadside meadow. 1648 Comment
  HSC40128  Hosackia oblongifolia var. oblongifolia Thomas W. Nelson, James Nelson 1976-7-28 3077 Humboldt Beside rd. to Pine Mtn. 1524 Comment
  CHSC866  Hosackia rosea V. Holt 1941-5-30 Humboldt Comment
  HSC98310  Hosackia yollabolliensis W. K. Parks Jul 1933 2057 Humboldt On Buck Mtn. Comment
  SBBG64581  Hydrocotyle ranunculoides A. Keedy 1988-9-20 13 Humboldt Arcata Salt Marsh Project 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
  HSC102178  Hypericum anagalloides M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-3 1091 Humboldt Patterson Meadows 1555 Comment
  HSC74685  Hypericum anagalloides Gail Newton 1981-8-7 2457 Humboldt Near Board Camp Mtn. 1478 Comment
  UC35071  Hypericum formosum var. scouleri Chesnut and Drew 1888-7-30 Humboldt Grouse Creek Comment
  HSC24388  Hypericum perforatum J. O. Sawyer 1970-6-24 2240 Humboldt Ridge on Big Hill Rd., E of Hoopa 1189 Comment
  RSA94822  Hypochaeris glabra F. W. Peirson 1923-7-9 3934 Humboldt State Park on Eel River Comment
  POM289689  Hypochaeris radicata Lyman Benson 1928-7-8 381 Humboldt Weott Ranger Station; Mt. Range: Seaward N Coast; Watershed: S Fork Eel River. 61 Comment
  UC302049 Image available Iliamna latibracteata Joseph P. Tracy 1926-6-12 7585 Humboldt Prairie Creek 152 Comment
Read comments
Feb 27 2012
  HSC44568  Ipomopsis aggregata Brad Klipfel 1973-7-15 186 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  CAS-BOT-BC133500  Iris Henry M. Pollard 1944-9-1 s.n. Humboldt Near Orleans Comment
  HSC49967  Iris douglasiana M. A. Baker 1979-5-30 768 Humboldt NW tip of Elk Head Comment
  RSA135872  Iris douglasiana Lee W. Lenz, E. K. Balls 1955-5-15 20742 Humboldt 2 miles southeast of Petrolia, along Old Coast Road to Ettersburg 122 Comment
  UC719144  Iris macrosiphon F. G. Meyer 1938-4-6 1390 Humboldt about 10 mi n Garberville Comment
  HSC34872  Iris purdyi Thomas W. Nelson, James Nelson 1975-5-5 1781 Humboldt Beside Hwy. 101, 5 mi. S of Salmon Creek bridge Comment
  HSC34873  Iris purdyi Thomas W. Nelson, James Nelson 1975-5-5 1780 Humboldt Beside Hwy. 101, 4 mi. S of Salmon Creek bridge Comment
  UCD138800  Iris purdyi R. N. Raynor 1935-2-22 s.n. Humboldt Fort Seward. Comment
  CAS-BOT-BC240325  Iris tenax subsp. klamathensis Dana York 2011-5-31 3021 Humboldt Six Rivers National Forest, Ca. 1.1 km S-SE of Somes Bar Post Office, on the slope E and above Hwy. 96 adjacent to a large landslide that occurred in 2010 Comment
  HSC43789  Iris tenax subsp. klamathensis B. Reinhardt 1976-5-11 Humboldt Comment
  HSC67518  Iris tenuissima J. P. Smith, J. O. Sawyer 1976-5-2 8620 Humboldt 3.7 mi. N of junction with Hwy. 299 on Hwy. 96 61 Comment
  UC1046540  Iris tenuissima R. Bacigalupi, L. Constance, J. P. Tracy, R. Moran, R. L. Rodriguez, and S. Carlquist 1951-6-14 3414 Humboldt ridge between Mad River and Redwood Creek (about Snow Camp, Bald Mountain); Bald Mountain, Snow Camp 1432 Comment
  HSC61723  Isatis tinctoria Ruby Van Deventer 1963-7-1 Humboldt Along the Klamath River at Pecwan 238 Comment
  UC936235  Isoetes howellii Joseph P. Tracy 1949-7-19 18398 Humboldt Grouse Mt., Mud Lake 1524 Comment
  RSA170275  Isolepis setacea Joseph P. Tracy 1917-6-17 4817 Humboldt Salmon Creek Valley, around Humboldt Bay. 30 Comment
  HSC37499  Jaumea carnosa J. D. Ackerman 1975-8-2 617 Humboldt Hwy. 101 between Arcata and Eureka. Humboldt Bay across from Murray Field Comment
  HSC83037  Jaumea carnosa A. L. Eicher 1985-8-17 Humboldt Marsh bordering Humboldt Bay, 0.2 mi. S of the mouth of Jacoby Creek. 1 Comment
  HSC95092  Jaumea carnosa Andrea Pickart 2002-6-27 120 Humboldt Mad River Slough and Dunes, N of parking lot area at N end of access road. 0 Comment
  CHSC96733  Juncus balticus subsp. ater Gordon Leppig 1999-10-3 1259 Humboldt Big Lagoon County Park, Big Lagoon Bog. NAD 27 UTM Zone 10, 405321E, 4557202N. 3 Comment
  UC726591  Juncus bufonius A. A. Heller 1923-7-10 13798 Humboldt between Scotia and Pepperwood; Eel River Comment
  RSA298326  Juncus bufonius J. P. Smith, Advanced Plant Taxonomy Plant 1971-10-9 5009 Humboldt Mad River above the Fish Hatchery. Comment
  CHSC19493  Juncus bufonius var. bufonius Norman Dennis 1965-6-19 128 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
  BLMAR316  Juncus effusus subsp. pacificus Jennifer Anthony-Wheeler 2002-8-6 316 Humboldt King range, grwong at mattole beach behind dune 6 Comment
  HSC62949  Juncus effusus subsp. pacificus M. Dean Griswold 1979-5-27 65 Humboldt W of G St., S of Arcata Comment
  UC1103039  Juncus ensifolius Joseph P. Tracy 1926-6-27 7665 Humboldt Horse Mountain Northern Coast Ranges 1463 Comment
  UC249815  Juncus ensifolius Joseph P. Tracy 1924-7-13 6732 Humboldt Big Lagoon Northern Coast Region 6 Comment
  RSA246805  Juncus ensifolius Robert F. Thorne, Percy C. Everett 1965-8-9 35335 Humboldt Clam Beach County Park. 3 Comment
  HSC39048  Juncus falcatus Linda M. Barker 1976-6-22 1623 Humboldt 3 mi. W of Arcata Comment
  RSA168867  Juncus hesperius Joseph P. Tracy 1938-6-15 15938 Humboldt Carlotta. 61 Comment
  UCD141574  Juncus lescurii Linda M. Barker 1976-6-22 1620 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  CHSC103201  Juncus occidentalis Peter F. Zika 2009-6-16 24496 Humboldt Outer North Coast Range, between Lord-Ellis and Berry summits. Above Chezen Road, at junction with Route 299. 510 Comment
  JEPS67092  Juncus occidentalis Joseph P. Tracy 1926-7-5 7724 Humboldt Valley of South Yager Creek Northern Coast Ranges 762 Comment
  UC1103046  Juncus phaeocephalus Joseph P. Tracy 1921-7-10 5854 Humboldt Big Lagoon Northern Coast Region 6 Comment
  UC198646  Juncus saximontanus Joseph P. Tracy 1917-9-1 4834 Humboldt Murphy meadow Northern Coast Ranges, Bald Mt. 1066 Comment
  UC1152084  Juncus tenuis Joseph P. Tracy 1928-6-24 8464 Humboldt Valley of South Yager Creek 762 Comment
  JEPS67133  Juncus xiphioides Joseph P. Tracy 1915-9-12 4671 Humboldt Mouth of Laribee Creek Northern Coast Ranges 60 Comment
  UC1197590  Kalmia polifolia subsp. microphylla Joseph P. Tracy 1927-8-22 8348 Humboldt near High Prairie (Bald Mountain); Northern Coast Ranges, Bald Mountain 1066 Comment
  CAS-BOT-BC235882  Keckiella corymbosa Milo S. Baker 1927-8-15 2459 b Humboldt Bed of Eel R. at S. Fork Station Comment
  UC413904  Keckiella corymbosa C. M. Goethe 1930-8-13 Humboldt Eel River Comment
  UC535733  Keckiella corymbosa Eleanor Armstrong 1934-8-24 1186 Humboldt Richardson Grove 121 Comment
  NY790332  Keckiella lemmonii F. W. Pennell 1940-7-7 26089 Humboldt Route 299. South of Willow Creek. 182.9 Comment
  UC556337  Kickxia elatine Mrs. Emanuel Fritz 1935-1 Humboldt between Miranda and Dyerville (along Redwood Highway) Comment
  RSA167285  Koeleria macrantha Joseph P. Tracy 1951-6-24 19541 Humboldt Kneeland Prairie; rockpile and Ashfield Butte 762 Comment
  CDA39235  Lagophylla ramosissima D. Juliano 2013-8-1 PDR# 120 P06003679 Humboldt Vicinity of Carlotta, along Yager Creek, near Hwy. 36 & Central Ave. Comment
  UC169348  Lagophylla ramosissima Joseph P. Tracy 1912-8-3 3966 Humboldt opposite Buck Mountain; Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  HSC14213  Lamium purpureum R. C. Drewien 1963-3-24 7 Humboldt McKinleyville, Turner Dr. and Mill Creek crossing Comment
  RSA256583  Lapsana communis J. O. Sawyer 1970-6-24 2269 Humboldt S of Mill Creek Gap. F.S. Road 10N02. 1433 Comment
  UC302193  Lapsana communis Joseph P. Tracy 1926-6-6 7553 Humboldt Bair's on Redwood Creek Northern Coast Ranges, Redwood Creek 304 Comment
  JEPS10074  Lasthenia californica subsp. californica Joseph P. Tracy 1932-6-26 10265 a Humboldt Valley of South Yager Creek 762 Comment
  HSC14735  Lathyrus japonicus R. C. Hoover 1965-5-18 57 Humboldt Clam Beach Comment
  HSC101985  Lathyrus nevadensis var. nevadensis M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-12 883 Humboldt Patterson Meadows 1566 Comment
  UC1191473  Lathyrus palustris Malcolm A. Nobs and S. Galen Smith 1949-8-3 1187 Humboldt s outskirts Eureka Comment
  SEINET5327351  Lathyrus palustris J. Tracy 1907-7-20 2593 Humboldt near Samoa; region about Humboldt Bay 152 Comment
  UC1199064  Lathyrus torreyi Joseph P. Tracy 1898-7-13 74 Humboldt near Hydesville; Northern Coast Region 60 Comment
  UC33512  Lathyrus torreyi Chesnut and Drew 1888-7-9 Humboldt Kneeland Comment
  UCD106657  Lathyrus torreyi K. Esau 1934-5-8 s.n. Humboldt Redwood Highway near Scotia. Comment
  JEPS55300  Lathyrus torreyi Lincoln Constance 1934-5-24 633 Humboldt e side Look Prairie (bordering lower Look Prairie); South Fork Eel River, Bull Creek Region 121 Comment
  UC1222397  Lathyrus vestitus Joseph P. Tracy 1949-6-20 18316 Humboldt 5 mi se Arcata; Fickle Hill 609 Comment
  RSA64054  Lathyrus vestitus subsp. bolanderi C. L. Hitchcock 1949-6-7 19081 Humboldt Redwood Highway ca 15 miles N of Garberville. Comment
  HSC64139  Lathyrus vestitus subsp. vestitus J. P. Smith, J. O. Sawyer, J. Cole 1977-7-2 3051 Humboldt Rd. 11N17 between Dagsaw Springs and Divide Lake 793 Comment
  HSC39786  Layia carnosa Peter Sorensen 1976-6-14 Humboldt N Spit Comment
  RSA92250  Layia carnosa F. W. Peirson 1923-7-11 3905 Humboldt 18 miles north of Eureka Comment
  UC672865  Lemna turionifera Joseph P. Tracy 1932-8-21 10370 Humboldt on w slope of Chaparral Mountain, on e side of Mad River, Three Cabins Ranch Mad River; Chaparral Mountain, , Three Cabins Ranch 457 Comment
  UC1101252  Lemna valdiviana Malcolm A. Nobs, S. Galen Smith 1949-8-9 1249 Humboldt Clam Beach Comment
  RSA15571  Leontodon nudicaulis C. B. Wolf 1927-8-28 1188 -A Humboldt Eureka Bay, on the road to Arcata. Comment
  UC1223216  Leontodon saxatilis Joseph P. Tracy 1948-7-11 18072 Humboldt at Lack Pond Comment
  HSC59676  Leontodon saxatilis subsp. saxatilis George Kirn 1977-10-30 Humboldt 1/2 mi. from mouth of Elk River 8 Comment
  JEPS36508  Leontodon saxatilis subsp. saxatilis F. W. Peirson 1926-7-13 7056 Humboldt near Blue Lake; Mad River Comment
  HSC90241  Leontodon saxatilis subsp. saxatilis Jean Hanson 1980-5-24 64 Humboldt Indian (Gunther) Island in Humboldt Bay, city of Eureka, W end of island, S of dike Comment
  CAS-BOT-BC88801  Lepidium campestre M. S. Jussel 1931-5-2 s.n. Humboldt 20 miles north of Garberville. Comment
  CAS-BOT-BC89079  Lepidium didymum Robert F. Thorne; P. Everett 1965-8-8 35243 Humboldt North edge of Eureka, east of Highway 101. 4 Comment
  UCD115346  Lepidium didymum Lincoln Constance 1934-6-18 902 Humboldt Border of North Dyerville Flat, near South Fork R.R. Station and Post Office, South Fork Eel River, Bull Creek Region. Comment
  UC1116214  Lepidium nitidum Joseph P. Tracy 1948-4-4 17962 Humboldt near Samoa; Humboldt Bay 6 Comment
  UC1222651  Lepidium virginicum var. pubescens Joseph P. Tracy 1950-8-20 19317 Humboldt Orleans Comment
  HSC97990  Leptosiphon ciliatus subsp. ciliatus Cara Witte 2007-7-8 431 Humboldt Board Camp Mountain. Pack trail 4E26. 1463 Comment
  RSA44412  Lessingia nemaclada H. M. Pollard 1948-8-3 s.n. Humboldt Orleans Comment
  CAS-BOT-BC341828  Lessingia nemaclada Henry M. Pollard 1945-8-28 s.n. Humboldt Between Orleans and Camp Creek, Klamath River Canyon Comment
  JEPS20619  Lessingia nemaclada Joseph P. Tracy 1937-9-5 15681 Humboldt Willow Creek Trinity River Valley 152 Comment
  CHSC300  Leucanthemum vulgare A. Small 1953-4-1 Humboldt Near Ferndale. Comment
  HSC91923  Leucanthemum vulgare E. Mackey 1986-7-21 Humboldt Patrick's Point State Park near Ceremonial Rock. Comment
  UC581785  Leucanthemum vulgare Joseph P. Tracy 1937-6-23 15360 Humboldt along Mad River; Blue Lake Comment
  CAS-BOT-BC444059  Lewisia cotyledon var. howellii Lincoln Constance; Reed C. Rollins 1942-5-12 2885 Humboldt Klamath-Siskiyou Region. Mouth of Bluff Creek, 6 miles northeast of Weitchpec. 152 Comment
  HSC36171  Lewisia cotyledon var. howellii J. P. Smith 1973-5-4 6367 Humboldt 2 mi. S of Somes Bar on Hwy. 96 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
  RSA183570  Leymus mollis subsp. mollis R. I. Bonn 1965-3-12 6 Humboldt four miles west of Arcata on Lanphere Rd. Comment
  HSC75877  Ligusticum apiifolium Bill Copeland 1980-7-2 575 Humboldt Near Snow Camp Mtn. 1311 Comment
  HSC74226  Ligusticum californicum M. A. Baker 1980-7-19 3021 Humboldt Near Bret Hole. 1814 Comment
  HSC21522  Lilaeopsis occidentalis D. E. Anderson 1962-7-14 2272 Humboldt W edge of Freshwater Lagoon Comment
  HSC21523  Lilaeopsis occidentalis E. Hunt 1949-5-18 21 Humboldt Humboldt Bay Comment
  HSC63175  Lilium bolanderi M. A. Baker 1979-7-10 1021 Humboldt Comment
  UC176689  Lilium columbianum Joseph P. Tracy 1913-7-13 4356 B Humboldt Patrick's Point; Northern Coast Ranges 30 Comment
  CAS-BOT-BC130644  Lilium kelloggii Albert M. Vollmer; Ira L. Wiggins 1940-7-4 6 Humboldt On Orick-Weitchpec road, 15 miles west of Weitchpec 944 Comment
  CAS-BOT-BC130647  Lilium kelloggii Albert M. Vollmer; Ira L. Wiggins 1940-7-4 6 Humboldt On Orick-Weitchpec road, 15 miles west of Weitchpec 944 Comment
  HSC15572  Lilium kelloggii S. V. Thompson 1967-7-23 9 Humboldt E of Freshwater Park Comment
  RSA130331  Lilium kelloggii Albert M. Vollmer, L. Beane 1953-07 119 Humboldt Freshwater Comment
  RSA74747  Lilium kelloggii Albert M. Vollmer, L. Beane 1951-06 s.n. Humboldt On road to Bald Mountain, east of Korbel Comment
  CAS-BOT-BC130690  Lilium occidentale David D. Keck 1948-7-1 5978 Humboldt 3 mi. N. Big Lagoon Comment
  UC175925  Lilium occidentale Joseph P. Tracy 1912-6-16 3705 Humboldt near Indianola (on Table Bluff); Northern Coast Region, Humboldt Bay Region 0 Comment
  CAS-BOT-BC130732  Lilium pardalinum Doris K. Kildale 1928-7-25 5693 Humboldt Chalk Mountain 914 Comment
  UC1198235  Lilium pardalinum Joseph P. Tracy 1924-7-4 6714 Humboldt Snow Camp; Northern Coast Ranges 1371 Comment
  UC1225855  Lilium pardalinum Joseph P. Tracy 1948-9-5 18196 Humboldt head of Little Hors-Linto Creek; Trinity Summit 1371 Comment
  UC30065  Lilium pardalinum Chesnut and Drew 1888-7-20 Humboldt Pilot Creek Comment
  HSC77937  Lilium pardalinum subsp. vollmeri D. K. Imper 1982-7-23 1495 Humboldt Near Onion Lake. 1371 Comment
  CAS-BOT-BC132966  Lilium rubescens V. Rattan 1882-6-1 s.n. Humboldt unspecified Comment
  JEPS62029  Lilium rubescens Mrs. M. H. Manning 1901-7-27 319 Humboldt Bald Hills Comment
  JEPS99290  Lilium rubescens H. and M. Dearing 1939-6-27 3730 Humboldt near Dinsmore (Van Duzen River) 730 Comment
  HSC98854  Lilium washingtonianum subsp. purpurascens Cara Witte 2008-7-11 872 Humboldt National Forest 1. 1/2 mile south from intersection with Forest Service Road 6N01B. 1575 Comment
  HSC15784  Limnanthes douglasii J. E. Lankila 1962-5-6 8 Humboldt W bank of river at Ferndale. Comment
  HSC23110  Limnanthes douglasii Norman Dennis 1965-6-11 113 Humboldt 1/4 mi. S and 1 mi. E of the junction of Barry Ridge Rd. and the Eureka-Bridgeville county road, along Ashfield Ridge Rd. About 5 mi. SE of Kneeland 793 Comment
  UC1197411  Limnanthes douglasii Joseph P. Tracy 1927-7-4 8240 Humboldt Lone Star Creek Northern Coast Ranges (Iaqua region) 609 Comment
  UC249575  Limnanthes douglasii Joseph P. Tracy 1921-4-24 5476 Humboldt Phillipsville Northern Coast Ranges (slopes facing South Fork of Eel River) 121 Comment
  UC908601  Linanthus acicularis Joseph P. Tracy 1932-5-1 9855 Humboldt near Garberville; Redway 182 Comment
  UC177192  Linanthus androsaceus Joseph P. Tracy 1912-7-21 3774 Humboldt Alton Northern Coast Region 30 Comment
  UC907986  Linanthus androsaceus Joseph P. Tracy 1936-6-9 14879 Humboldt Bear River Ridge Northern Coast Ranges, Bear River Ridge 609 Comment
  UC906691  Linanthus androsaceus Joseph P. Tracy 1943-5-23 17424 Humboldt e of Redwood Creek (Berry's Mt. on Trinity Highway); Berry's Mt. 487 Comment
  UC1198567  Linanthus bicolor Joseph P. Tracy 1914-5-14 4435 Humboldt Fort Seward Northern Coast Ranges 121 Comment
  HSC100667  Linaria canadensis Carl C. Marshall Jun 1886 237 Humboldt Trinidad. Comment
  CDA6374  Linaria vulgaris E. C. Whitney 1965-9-25 Humboldt Highway 101, Fortuna. 0 Comment
  JEPS19995  Lipocarpha aristulata Joseph P. Tracy 1931-9-7 9650 B Humboldt Trinity River Valley, at Willow Creek Willow Creek; Trinity River Valley, Willow Creek 152 Comment
  HSC89536  Listera cordata var. nephrophylla Brad W. Klipfel 1977-5-16 Humboldt Above Van Duzen River Comment
  UC1083192  Lithocarpus densiflorus Herbert L. Mason 1928-7-14 4899 Humboldt near Garberville (East Fork of Eel River); East Fork of Eel River Comment
  CAS-BOT-BC36102  Lithocarpus densiflorus var. densiflorus Carl B. Wolf 1930-10-29 1783 Humboldt Old Coast Road, 4 miles SO. of Honeydew Post Office 304 Comment
  RSA21079  Lithocarpus densiflorus var. densiflorus Carl B. Wolf 1937-8-13 9239 Humboldt North coast range, 8 mi. east of Hoopa Valley on new road towards Trinity summit. 1220 Comment
  RSA697653  Lithocarpus densiflorus var. densiflorus J. R. Bruff 1937-8-17 920 Humboldt Richardson Grove. Comment
  UC1196492  Lithophragma affine Joseph P. Tracy 1918-5-26 4944 Humboldt lower foothills towards Redwood Creek Grouse Mt.; Northern Coast Ranges, , towards Redwood Creek 762 Comment
  UC14526  Lithophragma affine W. C. Blasdale 1896-6-8 Humboldt Graham's Comment
  HSC32287  Lithophragma campanulatum D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5633 Humboldt Senteney Rock, a large barren Franciscan Rock along Swayback Ridge. Comment
  HSC97180  Lithophragma campanulatum Benjamin Hart, Erin Lonergan 2007-6-13 10 Humboldt 1 mi. E of USFS Rd. NF1 on 5N04 1524 Comment
  CAS-BOT-BC435645  Lithophragma heterophyllum Volney Rattan 1883-6-1 s.n. Humboldt Between Mad R. and Pilot Creek Comment
  CAS-BOT-BC342349  Logfia gallica Joseph P. Tracy 1935-5-30 13914 Humboldt Trinity River Valley, at Willow Creek 152 Comment
  HSC100489  Lolium perenne Carl C. Marshall Jun 1886 226 Humboldt Near Arcata. Comment
  HSC89608  Lolium perenne M. Roantree 1985-5-2 33 Humboldt E side of Trinidad Head. Comment
  POM188113  Lolium perenne Marcus E. Jones 1931-7-16 29212 Humboldt Arcata. Comment
  SEINET194910 Image available Lolium perenne A. A. Heller 1923-7-9 13779 Humboldt Arcata near 10 Comment
  CAS-BOT-BC271058  Lolium temulentum Ashley C. Browne 1936-6-11 s.n. Humboldt Patrick's Point State Park Comment
  HSC96251  Lomatium californicum Kaylea Eickhoff, Cara M. Witte 2005-6-24 16 Humboldt ~13 mi S of Hwy 299 on NF1 1375 Comment
  JEPS16099  Lomatium californicum W. L. Jepson 1902-6-20 1892 a Humboldt Fort Seward Ranch Ridge (= Mail Ridge) 1219 Comment
  HSC45394  Lomatium ciliolatum var. ciliolatum Thomas W. Nelson, Jane P. Nelson 1977-7-4 3582 Humboldt Along W side of road N of Alder Springs, head of N Fork of Conley Creek 1280 Comment
  SEINET200742  Lomatium dasycarpum Joeseph P. Tracy 1923-6-27 6380 Humboldt Trinity River Valley, near the South Fork 183 Comment
  UC162334  Lomatium dasycarpum subsp. dasycarpum Joseph P. Tracy 1911-7-6 3345 Humboldt along rd. between Three Creeks and mouth of Willow Creek; Northern Coast Ranges 762 Comment
  UC32502  Lomatium macrocarpum W. C. Blasdale 1896-6-6 Humboldt Kneeland's Pr. Comment
  CAS-BOT-BC240472  Lonicera hispidula Ynez Whilton Winblad 1941-6-24 s.n. Humboldt Between Garberville and Hartsook Comment
  SD51253  Lonicera involucrata Darley F. Howe 1961-8-1 3104 Humboldt 6.0 miles north of Trinidad on Highway 101. Comment
  CAS-BOT-BC241496  Lonicera involucrata var. ledebourii Huron H. Smith 1911-6-4 3801 Humboldt Trinidad Comment
  HSC77902  Lonicera involucrata var. ledebourii L. P. Janeway 1984-5-16 797 Humboldt N Spit of Humboldt Bay, on the W side of Samoa Road ca. 1/4 mi. N of the boat ramp. 5 Comment
  JEPS13675  Lonicera involucrata var. ledebourii Joseph P. Tracy 1937-6-20 15343 Humboldt 10 miles up from mouth Bear River 152 Comment
  LA205885  Lonicera involucrata var. ledebourii H. Lewis; 1940-6-3 sn Humboldt Dry Lagoon Beach State Park, edge of lagoon Comment
  SBBG52993  Lonicera involucrata var. ledebourii J. D. Hobson -Jul-1966 Humboldt beach and cliff at S end of sand spit forming Eureka Harbor, 10 mi S of Eureka Comment
  SDSU2917  Lonicera involucrata var. ledebourii Harvey 1938-8-13 2278 Humboldt North of Arcata. Comment
  UC162847  Lotus aboriginus J. P. Tracy 1901-5-12 1078 Humboldt immediate vicinity Eureka 0 Comment
  UC179941  Lotus aboriginus Joseph P. Tracy 1914-7-5 4576 Humboldt between High Prairie and Snow Camp; Northern Coast Ranges, Bald Mountain 1219 Comment
  UC33554  Lotus aboriginus Chesnut and Drew 1888-7-8 Humboldt Arcata Comment
  JEPS20790  Lotus aboriginus W. L. Jepson 1902-6 1944 Humboldt Berry Ranch Redwood Creek Comment
  HSC98072  Lotus crassifolius var. crassifolius Cara Witte 2007-7-12 520 Humboldt Along Forest Service Road 5N10. 1.25 miles south of intersection with 5N41. 1283 Comment
  JEPS84908 Image available Lotus douglasii W. L. Jepson 1902-8-13 1979 Humboldt Three Creeks to Willow Creek (forest on mt. side); ; Three Creeks, to Willow Creek, Humboldt Co. 762 Comment
  HSC71602  Lotus humistratus M. A. Baker 1980-6-26 2417 Humboldt Near Sims Creek 610 Comment
  HSC45023  Lotus humistratus R. Sutherland 1978-4-23 19 .23478 Humboldt Road near head of Kinsey Ridge 732 Comment
  HSC97498  Lotus micranthus Cara Witte 2007-5-21 60 Humboldt White Oak Opening. 1257 Comment
  UC1197315  Lotus pinnatus J. P. Tracy 1901-6-30 1201 Humboldt immediate vicinity Eureka 0 Comment
  UC179939  Lotus purshianus var. purshianus Joseph P. Tracy 1914-7-12 4583 Humboldt Eureka Northern Coast Region 0 Comment
  HSC31388  Lotus scoparius Lincoln Constance 1934-6-1 768 Humboldt S Fork Eel River, Bull Creek Rd. between Dyerville Bridge and Bull Creek Flat Grove. 46 Comment
  SEINET3560045 Image available Lotus stipularis var. subglaber Joseph P. Tracy 1914-7-5 4576 Humboldt Bald Mountian, between High Prairie and Snow Camp 1219 Comment
  RSA751818  Lupinus Robert F. Thorne 1957-9-3 19015 Humboldt Little River Beach, few miles S of Trinidad. Comment
  UC503018  Lupinus Joseph P. Tracy 1927-6-18 8189 Humboldt Capetown; Northern Coast Ranges, Capetown 304 Comment
  UC1223277  Lupinus adsurgens Joseph P. Tracy 1933-7-26 12912 Humboldt Grouse Mountain, top of mountain 1630 Comment
  JEPS64897  Lupinus albicaulis Joseph P. Tracy 1926-5-15 7495 Humboldt Kneeland Prairie Northern Coast Ranges, Kneeland Prairie 762 Comment
  UC302117  Lupinus albicaulis var. shastensis Joseph P. Tracy 1926-5-15 7495 Humboldt Kneeland Prairie; Northern Coast Ranges, Kneeland Prairie 762 Comment
  UC502997  Lupinus albicaulis var. shastensis Joseph P. Tracy 1932-7-15 10586 Humboldt ridges e Corral Prairie; Klamath Mountains, Trinity Summit, e of Corral Prairie 1828 Comment
  CDA27368  Lupinus albifrons var. collinus K. Eickhoff, C. M. Witte 2005-6-24 15 Humboldt Approximately 13 miles south of Highway 299 on NF1. Comment
  HSC32521  Lupinus andersonii Thomas W. Nelson, James Nelson 1973-5-28 955 Humboldt McKeown Ranch N of Dinsmore Comment
  HSC44522  Lupinus andersonii Brad Klipfel 1973-7-1 129 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  CHSC19515  Lupinus arboreus Wendell Wood 1970-10-7 307 Humboldt McKinleyville. Clam Beach. 0 Comment
  CHSC55898  Lupinus arboreus L. P. Janeway 1987-7-31 2547 Humboldt Vicinity of Eureka; North Spit of Humboldt Bay near the SE corner of Eureka City Airport. 3 Comment
  HSC46963  Lupinus arboreus J. P. Smith, Thomas W. Nelson 1977-6-30 9218 Humboldt Samoa Peninsula just E of the drag strip. Comment
  SBBG115192  Lupinus arboreus D. Leaberry 1992-6-20 Humboldt Clam Beach County Park, 1 mi N of Arcata Airport on Hwy 101 Comment
  UCD106590  Lupinus arboreus Linda M. Barker 1976-5-13 1474 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  UCD106622  Lupinus arboreus Roman Gankin 1965-8-6 548 Humboldt 1.3 miles south of Samoa, Samoa Peninsula. Comment
  UC1197282  Lupinus bicolor Joseph P. Tracy 1911-5-30 3195 Humboldt Bucksport Northern Coast Region, region about Humboldt Bay (region about Humboldt Bay) 0 Comment
  HSC58680  Lupinus latifolius G. L. Clifton, Griswold 1979-8-2 12238 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  HSC14854  Lupinus latifolius subsp. latifolius R. Spellenberg 1965-6-14 1132 Humboldt 6 mi. E of Freshwater on Rd. to Kneeland Comment
  HSC58656  Lupinus latifolius subsp. viridifolius G. L. Clifton, Griswold 1979-7-31 11743 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa. 1845 Comment
  UC1197258  Lupinus luteolus Joseph P. Tracy 1928-4-22 8417 Humboldt Redwood Creek Northern Coast Ranges, Redwood Creek (at Berry's) 274 Comment
  UC157015  Lupinus polyphyllus var. polyphyllus Joseph P. Tracy 1906-6-24 2495 Humboldt near Fields Landing; Northern Coast Region, Region about Humboldt Bay 0 Comment
  HSC14863  Lupinus rivularis J. L. Baker 1965-4-28 29 Humboldt Humboldt Meridian, 4 mi. N of Arcata on N Bank Rd. Comment
  SBBG13907  Lupinus rivularis H. and M. Dearing 1939-6-23 3694 Humboldt 12 mi E of Arcata Comment
  SEINET10837864  Lupinus rivularis Donald E. Bright 1962-6-11 Bright 276 Humboldt Growing with hemlock and redwood, 1 mi n of trinidad. Comment
  CHSC943  Lupinus variicolor M. Underhill 1952-7-13 Humboldt 0 Comment
  HSC14132  Luzula comosa Gerald T. Rood 1962-5-6 15 Humboldt Kneeland Rd. 1 mi. W of Barry Rd. Comment
  HSC56946  Luzula comosa Overton, Butler 1979-7-23 9436 Humboldt Near Horse Mtn., close to the town of Willow Creek 1478 Comment
  HSC70778  Luzula comosa R. York 1980-5-17 549 Humboldt Near Le Perron Peak 1066 Comment
  HSC97487  Luzula comosa Cara Witte 2007-5-23 109 Humboldt Near Grouse Mountain. Along 4N32. Approximately 0.5 miles south of intersection with 5N04 and 4N32E. 1425 Comment
  RSA15576  Luzula comosa Carl B. Wolf 1927-8-28 1167 Humboldt 9 miles from Willow Creek, on the grade of the road to Blue Lake. Comment
  CAS-BOT-BC436737  Luzula comosa var. laxa R. K. Gierisch; D. H. Esplin 1969-7-1 3539 Humboldt Six Rivers area: Grouse Mt. 1584 Comment
  CAS-BOT-BC499137  Luzula macrantha Peter F. Zika 2011-7-3 25497 Humboldt Titlow Hill Road, 3.7 road miles SE of Rte 299 at Berry Summit, 1 air km SSW of Horse Mountain 1310 Comment
  CAS-BOT-BC441228  Luzula macrantha Joseph P. Tracy 1926-5-2 7446 Humboldt North Coast Ranges: Willow Creek Canyon, near Ruby Creek 609 Comment
  UCR263353  Luzula subsessilis Peter F. Zika 2011-7-3 25492 Humboldt Outer North Coast Ranges (NCoRo), Titlow Hill Road, 3.0 road miles SE of Route 299 at Berry Summit, 1 air km SW of Horse Mountain 1310 Comment
  LA205865  Lycopodiella inundata Lawrence L. Kiefer; D. Branscomb 1964-5-20 1436 Humboldt Big Lagoon State Park 15 Comment
  HSC95519  Lycopodium clavatum Gordon Leppig 2004-2-3 2130 Humboldt Pacific Lumber Co. land, NE edge of THP 1-00-032. 300 Comment
  UC577390  Lycopus uniflorus Joseph P. Tracy 1934-7-30 13513 Humboldt along coast in front of S. End of Stone Lagoon (Dry Lagoon) 3 Comment
  UCD138085  Lysichiton americanus Malcolm A. Nobs; S. Galen Smith 1949-8-3 1183 Humboldt Southern outskirts of Eureka. Comment
  SEINET11770340  Lysichiton americanus F. H. Utech 1986-1 86 -416 Humboldt between Capetown & Ferndale along Mattole Creek, SW slope of Bear River Ridge 100 Comment
  RSA0015871  Lythrum hyssopifolia I. L. Wiggins 1932-7-19 5889 Humboldt Near Clam Beach, about 8 mi. N of Arcata. Comment
  HSC97613  Madia elegans Cara Witte 2007-6-4 180 Humboldt Cold Spring. 0.5 mile S of Titlow Hill. 1386 Comment
  UC1223209  Madia elegans Joseph P. Tracy 1950-8-4 19260 Humboldt ne of Lookout station (Grasshopper Peak, at head of Canoe Creek); Bull Creek State Park, Canoe Creek Comment
  HSC71169  Madia gracilis Thomas W. Nelson 1977-5-30 3415 Humboldt Base of Eight Mile Ridge upstream from Anderson's Ford. 701 Comment
  CAS-BOT-BC343025  Madia gracilis Doris K. Kildale 1927-6-25 3564 Humboldt Fearren's Ranch between Thorn & Shelter Cove Comment
  UCR123956  Madia madioides George K. Helmkamp, E. A. Helmkamp 2001-7-8 6972 Humboldt North Coast, CA Hwy 36, along the Van Duzen River, 19.6 mi east of CA Hwy 101, west of Bar W Road 137 Comment
  CAS-BOT-BC343593  Madia sativa Palmer Stockwell 1934-7-14 65 Humboldt Little River Comment
  HSC15596  Maianthemum dilatatum W. R. Brigham 1962-5-19 6 Humboldt S of Big Lagoon. Comment
  POM114046  Maianthemum dilatatum Marcus E. Jones 1924-4-26 s.n. Humboldt Eureka. Comment
  UCR198042  Maianthemum dilatatum Daniel Sanchez-Mata, S. Rivas-Martinez, M. Costa, M. Ladero 1998-6-10 s.n. Humboldt Trinidad-Klamath Glenn. Prairie Creek State Park, Prairie Creek Trail 70 Comment
  HSC15591  Maianthemum dilatatum W. F. Nickel 1965-5-15 Humboldt 0.5 mi. E of Arcata on rd. to Arcata Reservoir Comment
  POM87668  Maianthemum dilatatum Le Roy Abrams, Rimo C. Bacigalupi 8300 Humboldt Near northern county line Comment
  RSA376907  Maianthemum dilatatum Larry E. DeBuhr, Gary D. Wallace 1972-5-22 606 Humboldt About 25 miles north of Arcata on the south end of Big Lagoon. Comment
  HSC15654  Maianthemum racemosum subsp. amplexicaule J. R. Eichelberger 1964-5-5 71 Humboldt 0.5 mi. E of entrance to Azalea State reserve Comment
  HSC45273  Maianthemum racemosum subsp. amplexicaule Brad Klipfel 1973-4-28 7 Humboldt Along Korbel to Maple Creek Rd., Canyon Creek Comment
  HSC79371  Maianthemum racemosum subsp. amplexicaule Kenneth Clark 1980-3-27 555 Humboldt On divide of N and S Forks of Dead Man's Gulch 122 Comment
  SEINET12050378  Maianthemum racemosum subsp. amplexicaule F. H. Utech 1988-1 88 -270 Humboldt 14 mi W of Bridgeville to Carlotta on CA 36, Mile Marker 11.40, Van Duzen Co. Park (Pamplin Grove) 50 Comment
  HSC34159  Maianthemum stellatum Linda M. Barker 1974-5-11 177 Humboldt Redwood National Park, Bald Hills Rd., Gans Prairie 549 Comment
  HSC98156  Maianthemum stellatum W. D. Stevens 1964-5-16 9 Humboldt 1.0 mi. N of Kneeland School Comment
  SEINET12050368  Maianthemum stellatum F. H. Utech 1988-1 88 -280 Humboldt along CA 36 from Bridgeville enroute to Dinsmore, Mile Marker 42.00, above Van Duzen River 800 Comment
  UCSB29355  Maianthemum stellatum Phelps, M. 1972-3-19 Humboldt 1.5 mi from Garberville along Old Brice- land Rd; 0.5 mi north of roadside 213 Comment
  HSC41005  Malacothrix floccifera J. O. Sawyer 1975-10-17 2716 Humboldt Along road to Brush Mountain Lookout 1189 Comment
  UC1198759  Malus fusca J. P. Tracy 1901-5-12 1090 Humboldt immediate vicinity Eureka 0 Comment
  UC902195  Malva nicaeensis Joseph P. Tracy 1946-11-10 17662 Humboldt Trinidad 3 Comment
  HSC59579  Marah oregana Rick Lundquist 1979-5-23 103 Humboldt 3.4 mi. up Fickle Hill Rd. from 11th St. 274 Comment
  HSC7034  Marah oregana D. B. Bader 1963-4-1 47 Humboldt Second of the Clam Beach lagoons, W of Hwy. 101 Comment
  UC1197430  Medicago arabica Joseph P. Tracy 1936-6-8 14867 Humboldt Trinidad; on bluffs 3 Comment
  HSC25766  Medicago lupulina Jana Kattenhorn 1970-10-28 150 Humboldt Mad River Bottoms, N Bank off Essex, off Hwy. 299 Comment
  HSC39838  Medicago polymorpha Peter Sorensen 1976-6-15 Humboldt Woodley Island Comment
  HSC14974  Medicago polymorpha Jack Rockwell 1962-5-12 74 Humboldt N of Bridgeville in hillside canyon 213 Comment
  UCD107899  Medicago polymorpha W. Williams 1951-1 s.n. Humboldt location unknown. Comment
  HSC98040  Medicago sativa Cara Witte 2007-7-17 537 Humboldt Along National Forest 1 on Kinsey Ridge. 1 mile south of intersection with 4N06. 1234 Comment
  UC1145138  Melica californica Joseph P. Tracy 1943-5-9 17418 Humboldt Willow Creek Trinity River Valley (Trinity River Valley) 152 Comment
  UCD87157  Melica californica A. H. Murphy 1951-6-12 57 Humboldt Fleming range plant count area on Ft. Seward ranch, south fork of the Eel River Drain. Comment
  HSC75472  Melica geyeri J. O. Sawyer 1980-7-18 3619 Humboldt North Trinity Mountain Research Natural Area, north of Mill Creek Lake to Red Cap Hole. Comment
  UC184916  Melica harfordii Joseph P. Tracy 1912-7-26 3852 Humboldt Kneeland Prairie; Northern Coast Ranges 762 Comment
  UCD87370  Melica harfordii A. A. Beetle; G. L. Stebbins Jr. 1942-6-1 3453 Humboldt 2 miles north of Orleans. Klamath River. Comment
  CAS-BOT-BC281005  Melica spectabilis Joseph P. Tracy 1932-7-12 10445 Humboldt Klamath Mts,Trinity Summit. At Corral Prairie 1524 Comment
  HSC38428  Melica subulata Dennis Anderson, J. P. Smith 1971-6-18 - 1055 Humboldt 1 mi. W of Lord Ellis Summit. Comment
  UC1145128  Melica subulata Joseph P. Tracy 1942-6-2 17107 Humboldt Valley of South Yager Creek 762 Comment
  UCD88599  Melica subulata A. A. Beetle; G. L. Stebbins Jr. with J. P. Tracy 1942-6-2 3475 Humboldt 4 miles north of Bridgeville. Comment
  UCD88673  Melica subulata R. Tofsrud 1949-7-1 s.n. Humboldt On road from Scotia to Capetown. Comment
  UC160958  Melilotus albus Harley P. Chandler June 1901 1464 Humboldt Klamath River North Coast Ranges 304 Comment
  HSC43242  Melilotus albus R. Sutherland 1976-8-6 11 .6876 Humboldt 229 Comment
  HSC25761  Melilotus officinalis Jana Kattenhorn 1970-10-14 45 Humboldt Big Lagoon Comment
  SEINET13946829 Image available Mentha arvensis Henry M. Pollard 1945-1 Humboldt Pond near Harley place, Orleans Comment
  UC154012  Mentha canadensis J. P. Tracy 1905-9-3 2391 Humboldt immediate vicinity Eureka; immediate vicinity of Eureka 0 Comment
  UC535756  Mentha canadensis Eleanor Armstrong 1934-7-18 1127 Humboldt Richardson Grove; Sandbar 121 Comment
  HSC12347  Mentha pulegium Steve Dorei 1970-10-31 135 Humboldt Scotia Bluffs, north of railroad tracks Comment
  HSC22008  Mentha pulegium Thomas W. Nelson 1970-10-18 250 Humboldt Beside Hwy. 101, 100 yds. N of bridge over Mad River Comment
  SEINET10498893  Mentha pulegium Mary Susan Taylor 1977-8-5 Taylor 1429 Humboldt Abundant around bridge over Eel River, at the turnoff from Hwy 1 to Ferndale, in Fernbridge. 2 Comment
  HSC70398  Micropus californicus var. californicus M. A. Baker 1980-6-7 1838 Humboldt Near Ammon Creek 732 Comment
  UC1223200  Microseris douglasii subsp. douglasii Joseph P. Tracy 1948-6-13 18057 Humboldt 3 mi w Harris Comment
  HSC58383  Microseris nutans Terry Griswold 1979-7-25 10913 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon 1784 Comment
  HSC39233  Microseris nutans D. E. Anderson, J. P. Smith 1971-7-6 - 1275 Humboldt Horse Mtn. Comment
  SEINET7016944  Microseris paludosa Wanda P. Vestal, A. G. Vestal 1937-6-23 s.n. Humboldt Saddle near east end of Bald Hills, southeast of Orick. Comment
  HSC69814  Mimulus alsinoides Thomas W. Nelson, Jane P. Nelson 1978-5-25 3801 Humboldt Above E Fork of Willow Creek just upstream from S.R. 299 bridge 457 Comment
  JEPS1744  Mimulus alsinoides Clyde Ritchie Bell 1951-4-21 1045 Humboldt 7 mi s Hoopa Comment
  HSC26881  Mimulus aurantiacus var. aurantiacus Clifton Raymond Chesbrough 1973-6-19 88 Humboldt 0.5 mi. S of Trinidad along the coast Comment
  UC677720  Mimulus aurantiacus var. aurantiacus C. C. and S. K. Harris 1936-6-9 681 Humboldt above Carlotta 60 Comment
  UC1196769  Mimulus floribundus Joseph P. Tracy 1923-9-16 6557 Humboldt at mouth South Fork; Trinity River Valley 182 Comment
  UC147880  Mimulus inodorus Joseph P. Tracy 1908-6 2697 Humboldt opposite Buck Mountain; Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  UC103776  Mimulus kelloggii Harley P. Chandler June 1901 1480 Humboldt Klamath River North Coast Ranges 426 Comment
  UC582701  Mimulus microphyllus Joseph P. Tracy 1933-7-25 12855 Humboldt Grouse Mountain North 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
  HSC43243  Mimulus moschatus R. Sutherland 1976-8-6 12 .6876 Humboldt 229 Comment
  SEINET6904195  Minuartia californica Wanda P. Vestal, A. G. Vestal 1937-6-23 s.n. Humboldt Saddle near east end of Bald Hills, southeast of Orick. Comment
  POM126164  Minuartia cismontana Joseph P. Tracy 1921-5-30 5479 Humboldt Kneeland Prairie. 762 Comment
  CAS-BOT-BC388624  Minuartia douglasii Doris K. Kildale 1928-5-27 5954 Humboldt Kneeland Prairie 853 Comment
  CAS-BOT-BC388629  Minuartia douglasii Harley P. Chandler 1901-6-1 1454 Humboldt North Coast Ranges. Klamath River 304 Comment
  HSC4059  Minuartia douglasii D. E. Anderson 1962-7-14 2262 Humboldt Comment
  CHSC115049  Mitella caulescens Stephanie Puentes 2008-6-19 09120 Humboldt 1.5 miles west of Lake Prairie on the southwest facing bank of Maple Creek. 670 Comment
  SD56850  Mitellastra caulescens Darley F. Howe 1963-8-7 3806 Humboldt 23 mi west of west end to 6 Rivers north fork on #299 213 Comment
  BLMAR365  Modiola caroliniana Clara Sander 2003-6-3 365 Humboldt King range, Mattole campground roadside 9 Comment
  HSC48742  Moehringia macrophylla Brad Klipfel 1973-6-10 67 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC74277  Moehringia macrophylla M. A. Baker 1980-5-23 1393 Humboldt Near Buck Mtn. 1524 Comment
  UC1116235  Moehringia macrophylla Joseph P. Tracy 1942-6-2 17103 Humboldt Valley of South Yager Creek 762 Comment
  UC1198327  Moehringia macrophylla Joseph P. Tracy 1927-6-12 8131 Humboldt Horse Mountain 1432 Comment
  UC205476  Mollugo verticillata Joseph P. Tracy 1920-8-15 5363 Humboldt Klamath River at Bluff Creek Bluff Creek; Northern Coast Ranges, Klamath River 152 Comment
  HSC101970  Monardella odoratissima subsp. glauca M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-12 866 Humboldt Patterson Meadows 1566 Comment
  HSC102085  Monardella odoratissima subsp. glauca M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 989 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  HSC45434  Monardella odoratissima subsp. odoratissima Thomas W. Nelson, Jane P. Nelson 1978-7-2 4398 Humboldt Along FS 2S08 near Pine Mountain 1463 Comment
  HSC57122  Monardella odoratissima subsp. pallida Walter Overton, Marvin Butler 1979-7-25 9870 Humboldt Near Sims Mtn., close to the town of Willow Creek 1295 Comment
  UC1239683  Monardella sheltonii Joseph P. Tracy 1912-7-26 3867 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  UC21672  Monotropa hypopitys J. Burtt Davy 1899-6-24 5773 Humboldt Hoopa Valley Comment
  UC183597  Montia fontana Joseph P. Tracy 1913-6-17 41621 1/2 Humboldt Buck Mountain, near the summit Buck Mountain; Northern Coast Ranges, Buck Mountain 1524 Comment
  CAS-BOT-BC445164  Montia parvifolia L. R. Abrams 1918-6-16 7202 Humboldt Willow Creek Comment
  RSA739606  Montia parvifolia John Dittes, Josephine Guardino 2003-6-7 2003 -64 Humboldt Outer N coast Range, 2.9 air mile NW of Legget, 5.2 air mile SE of Piercy, shaded rocks on eastern bank of S Fork Eel River. 183 Comment
  RSA322445  Montia parvifolia J. P. Smith 1973-5-26 6851 Humboldt Scotia Bluffs along the Eel River near Rio Dell. Comment
  UC673005  Montia parvifolia Joseph P. Tracy 1933-5-20 12215 Humboldt s of Ferndale (Wild Cat Ridge); Wild Cat Ridge 304 Comment
  HSC10395  Muhlenbergia filiformis H. E. Parks, J. P. Tracy 1934-6-27 11083 Humboldt Grouse Mtn. Comment
  CAS-BOT-BC275346  Muhlenbergia mexicana Henry M. Pollard 1956-10-9 s.n. Humboldt Fig Tree Riffle at Woodson Mine, Klamath River, Orleans Comment
  RSA174003  Myrica californica Robert F. Thorne 1957-9-3 19020 Humboldt Patrick s Point State Park. Comment
  HSC12027  Nasturtium officinale D. Santana 1970-11-2 106 Humboldt E side of old Hwy. 1 in ditch Comment
  UC908378  Navarretia divaricata subsp. vividior Joseph P. Tracy Jul 16 1930-Jul 19 1930 9065 Humboldt near McKay Camp; Northern Coast Ranges, South Fork Mountain 1676 Comment
  UC1198607  Navarretia intertexta Joseph P. Tracy 1934-7-9 13345 Humboldt Dobbyn Creek 152 Comment
  UC1197896  Navarretia linearifolia subsp. linearifolia Joseph P. Tracy 1933-7-9 12646 Humboldt Brannan Mountain Northern Coast Ranges, Brannan Mountain 1219 Comment
  SEINET202730  Navarretia pubescens Joseph P. Tracy 1950-6-23 18861 Humboldt Dobbyn Creek, 3 miles NE of Alderpoint. 213 Comment
  UC169028  Nemacladus capillaris Joseph P. Tracy Jul 21 1905-Aug 16 1905 2296 Humboldt Elk Mountain; Northern Coast Ranges 1219 Comment
  UC1005677  Nemophila menziesii Frank W. Gould 1939-5-30 835 Humboldt about 25 mi due e Eureka (near top Horse Mountain, near ski-hut); near top Horse Mountain, e of Eureka 1100 Comment
  UC177171  Nemophila menziesii var. atomaria Joseph P. Tracy 1913-5-4 4061 Humboldt Kneeland Prairie Northern Coast Ranges, Kneeland Prairie 762 Comment
  CAS-BOT-BC219404  Nemophila parviflora Volney Rattan 1878-1-1 s.n. Humboldt Unspecified Comment
  HSC71171  Nemophila parviflora Thomas W. Nelson 1977-5-30 3416 Humboldt Base of Eight Mile Ridge upstream from Anderson's Ford. 701 Comment
  CAS-BOT-BC219409  Nemophila parviflora Kenneth Clark 1980-3-23 533 Humboldt Shelter Cove. South fork Dead Man's [Deadman] Gulch 60 Comment
  UC162684  Nicotiana quadrivalvis Joseph P. Tracy 1911-7-10 3500 Humboldt near Mouth of Willow Creek; Northern Coast Ranges, Valley of Trinity River 152 Comment
  HSC98107  Noccaea fendleri subsp. glauca Cara Witte 2007-6-20 314 Humboldt Forest Service Road 5N09. 1/4 mile east of intersection with National Forest 1. 1394 Comment
  RSA0013606  Nuphar lutea subsp. polysepala C. B. Wolf 1937-9-14 9353 Humboldt Town of Blue Lake. 15 Comment
  RSA0013607  Nuphar lutea subsp. polysepala C. B. Wolf 1937-9-9 9309 Humboldt 1 mi. so. of Capetown on road to Cape Mendocino. 91 Comment
  HSC59483  Nuttallanthus texanus M. A. Ericksen 1979-4-29 242 Humboldt 0.4 mi. N of Coast Guard Station, Samoa Peninsula. Comment
  UC217655  Nuttallanthus texanus J. P. Tracy 1904-7-4 2117 Humboldt immediate vicinity of Eureka 0 Comment
  CAS-BOT-BC142292  Oemleria cerasiformis Doris K. Kildale; J. W. Gillespie 1929-6-25 8391 Humboldt Pine's Pasture, Eureka Comment
  UC1128079  Oemleria cerasiformis P. L. Johannsen 1933-5-17 76 Humboldt Limestairs; Trinity National Forest, China Flat Quad. 182 Comment
  UCD81853  Oenanthe sarmentosa Chuck Hughes 2009-6-18 102 Humboldt Near Arcata. NE corner of intersection of Old Samoa Road and Pacheco Road. 1 Comment
  CDA38485  Oenanthe sarmentosa Tario 1932-9-21 s.n. Humboldt Arcata. 0 Comment
  UC673043  Oenanthe sarmentosa Joseph P. Tracy 1940-8-25 16713 Humboldt near High Prairie Bald Mt. 1005 Comment
  UCR111734  Oenothera wolfii D. K. Imper 1993-5-13 s.n. Humboldt North Coast, Lost Coast Road c. 4 miles south of Cape Mendocino at Davis Creek Bridge, from bridge along road c. 300 ft. to north 6 Comment
  UC637063  Orobanche californica subsp. californica Edward Lee 1934-8-17 1152 Humboldt East shore of Big Lagoon, 35 miles north of Eureka. Comment
  CAS-BOT-BC499669  Orobanche californica subsp. californica J. Clausen 1932-9-18 690 Humboldt About 5 mi S of Cape Mendocino Lighthouse Comment
  UC642296  Orogenia fusiformis Joseph P. Tracy 1932-7-15 10595 Humboldt ridges e. of Corral Prairie Trinity Summit 1828 Comment
  HSC100676  Orthocarpus faucibarbatus Carl C. Marshall Apr 1886 170 Humboldt Fields near bay. Comment
  HSC56040  Orthocarpus imbricatus G. L. Clifton, Terry Griswold 1979-7-31 11605 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1719 Comment
  POM147450  Orthocarpus purpurascens var. latifolius Joseph P. Tracy 1925-8-14 7230 Humboldt Near Samoa, on Humboldt Bay. Comment
  HSC96256  Osmorhiza berteroi Kaylea Eickhoff, Cara M. Witte 2005-6-10 7 Humboldt Coldspring Camp, 7.4 mi. S of Hwy. 299 on NF1 1370 Comment
  UC314579  Osmorhiza berteroi Joseph P. Tracy 1923-6-19 6291 Humboldt Upper Mattole Valley Northern Coast Ranges 152 Comment
  HSC56091  Osmorhiza occidentalis G. L. Clifton, Terry Griswold 1979-7-31 11784 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa. 1845 Comment
  JEPS14243  Osmorhiza occidentalis Joseph P. Tracy 1927-6-12 8157 Humboldt Horse Mountain; lower slopes 1219 Comment
  JEPS14244  Osmorhiza occidentalis Joseph P. Tracy 1932-7-12 10471 Humboldt Brett Hole Trinity Summit (head) 1828 Comment
  HSC32844  Osmorhiza purpurea Thomas W. Nelson, Jane P. Nelson 1973-5-28 945 Humboldt McKeown Ranch N of Dinsmore Comment
  BLMAR235  Oxalis Jennifer Anthony-Wheeler 1996-9-26 235 Humboldt King range, growing creekside of bear creek btween campgrounds 548 Comment
  HSC16722  Oxalis articulata subsp. rubra N. D. Dennis 1965-4-4 6 Humboldt Corner of F and 9th street, in Eureka Comment
  HSC12755  Oxalis corniculata M. J. Athey 1970-11-22 23 Humboldt In Arcata along G street in front of P G & E Comment
  HSC46169  Oxalis oregana J. P. Smith 1973-5-26 6852 Humboldt Scotia Bluffs along the Eel River near Rio Dell. Comment
  SEINET3347646 Image available Oxalis oregana Noel H. Holmgren, James L. Reveal 1966-6-8 2658 Humboldt Coast Range; East of Arcata, 1.5 miles S of Korbel 274 Comment
  HSC45068  Oxalis oregana D. Sutherland 1978-4-23 10 .23478 Humboldt 666 Comment
  UC1197420  Oxalis oregana Joseph P. Tracy 1926-4-25 7413 Humboldt Strong's Station Northern Coast Ranges 60 Comment
  UC56731  Oxalis oregana Harley P. Chandler May, 1901 1160 Humboldt North Coast Ranges 30 Comment
  UCD110988  Oxalis oregana T. E. Weier 1942-5-21 s.n. Humboldt near Dyerville, Highway 101. Comment
  HSC16712  Oxalis pes-caprae Richard Steele 1962-3-20 12 Humboldt Arcata, on HSU campus 15 Comment
  HSC48829  Oxalis trilliifolia Brad Klipfel 1973-7-31 254 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  UC166075  Packera bolanderi var. bolanderi Joseph P. Tracy 1908-6-23 2677 Humboldt near Grizzly Gulch (on Van Duzen River); Northern Coast Ranges, Van Duzen River 152 Comment
  UC1196179  Paeonia brownii Joseph P. Tracy 1913-6-16 4146 Humboldt opposite Buck Mountain; Northern Coast Ranges, valley of Van Duzen River, Dinsmore's 762 Comment
  UCD88691  Panicum acuminatum var. fasciculatum Joseph P. Tracy 1918-7-5 5014 Humboldt White Thorn Valley. 304 Comment
  UCSB25613  Parnassia palustris Tracy, Joseph 1934-8-29 Humboldt South Fork Mountain, McKay Camp 1676 Comment
  UCD88947  Paspalum distichum Joseph P. Tracy 1939-10-6 16505 Humboldt Eureka. West of Sunset Cemetary. Comment
  UC146230  Pedicularis densiflora Joseph P. Tracy 1908-6-8 2637 Humboldt Kneeland Praire; Northern Coast Ranges 762 Comment
  HSC20931  Pedicularis densiflora N. J. Cole 1965-3-19 3 Humboldt 5 mi. S of Weitchpec along Hwy. 96 Comment
  HSC55334  Pedicularis racemosa Terry Griswold, Marvin Butler 1979-7-12 7178 Humboldt Near Groves Prairie, close to the town of Willow Creek 1256 Comment
  CAS-BOT-BC67768  Pellaea andromedifolia Doris K. Kildale 1928-12-30 6768 Humboldt Phillipsville Comment
  HSC39680  Pellaea brachyptera Thomas W. Nelson, Jane Nelson 1976-6-16 2742 Humboldt Just W of Alder Springs 1524 Comment
  HSC1074  Pellaea mucronata var. mucronata J. P. Tracy 1933-6-13 12561 Humboldt Hoopa Mtn., near summit on rd. from Hoopa westward to Bair's 1067 Comment
  HSC95881  Pellaea mucronata var. mucronata Will Ferrand 2002-4-28 41 Humboldt About 0.5 mi. S of intersection of Hwy. 299 and South Fork Trinity exit 259 Comment
  HSC55728  Penstemon anguineus G. L. Clifton, Terry Griswold 1979-7-26 10200 Humboldt Near Salmon Mtn., close to the town of Forks of Salmon 1981 Comment
  BLMAR247  Penstemon anguineus Jennifer Anthony-Wheeler 1997-7-24 247 Humboldt Lacks Creek, growing NE of parking landing among regenerating forest 1219 Comment
  HSC63803  Penstemon anguineus M. A. Baker 1979-6-7 798 Humboldt Along road to Telescope Peak next to stream between Telescope Peak and Snow Mtn. 915 Comment
  SEINET7719718  Penstemon corymbosus Chesnut, Drew 1888-7-10 Humboldt Jarnigan's Comment
  UC169083  Penstemon deustus Harley P. Chandler June, 1901 1459 Humboldt Bluff Creek North Coast Ranges, , Bluff Creek (Klamath River) 426 Comment
  HSC36637  Penstemon laetus subsp. sagittatus Thomas W. Nelson, Jane P. Nelson, James Nelson 1975-6-14 1905 Humboldt N side of Pine Mtn. Comment
  JEPS11630  Penstemon laetus var. sagittatus Joseph P. Tracy 1937-7-2 15395 A Humboldt on ridge 2 mi e Groves Prairie; Trinity Summit 1524 Comment
  JEPS5714  Penstemon newberryi var. berryi W. L. Jepson 1902-7-16 2107 Humboldt Trinity Summit Comment
  NY627415  Penstemon newberryi var. berryi R. W. Spellenberg 1990-7-9 10229 Humboldt Extreme east edge of county, 6 air miles west-northwest of Hyampom, 36 miles south of CA Highway 299 and Berry Summit on USFS Road 1, ca. 5 miles north of Blake Mountain on South Fork Mountain. 1676.4 Comment
  UC1245388  Penstemon newberryi var. berryi Joseph T. Gregory 1935-7-26 765 Humboldt rocks near Water Dog Lakes Trinity Summit 1828 Comment
  UC201729  Penstemon rattanii unknown 1883-6-9 Humboldt near Kneeland Pr.; near Kneeland Pr. Comment
  CAS-BOT-BC71617  Pentagramma triangularis subsp. triangularis Doris K. Kildale 1927-7-3 3650 Humboldt Willow Creek Flat Comment
  UC1197323  Perideridia gairdneri subsp. borealis Joseph P. Tracy 1941-8-12 17051 Humboldt 2 mi s Fields Landing 6 Comment
  UC562621  Perideridia gairdneri subsp. borealis Joseph P. Tracy 1936-10-24 15204 Humboldt 2 mi s Fields Landing; Northern Coast Region, around Humboldt Bay 9 Comment
  JEPS14205  Perideridia gairdneri subsp. gairdneri Joseph P. Tracy 1936-10-24 15204 Humboldt hillside 2 mi s Field's Landing; Northern Coast Region, <Region> around Humboldt Bay 9 Comment
  UC1222747  Perideridia howellii Joseph P. Tracy 1950-8-18 19331 Humboldt along creek 1/2 mi along Blocksburg Rd w from bridge across creek; Larrabee Creek Comment
  UC642305  Perideridia howellii Joseph P. Tracy 1939-9-4 16474 Humboldt Larrabee Valley; gully in foothills at edge of valley 731 Comment
  UC1197324  Perideridia kelloggii Joseph P. Tracy 1921-10-2 5967 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  HSC70535  Perideridia parishii subsp. latifolia Gail Newton 1980-7-20 1643 Humboldt Near Bell Swamps 1426 Comment
  HSC75957  Perideridia parishii subsp. latifolia Overton, Butler 1979-7-24 9743 Humboldt Near Black Rock, close to the town of Willow Creek. 1554 Comment
  UC1197117  Perideridia parishii subsp. latifolia Doris Kildale Aug. 1925 Humboldt Trinity Summit 1524 Comment
  HSC99999  Persicaria capitata J. P. Smith 2009-11-17 12697 Humboldt Mouth of storm drain, at 7th & E in Eureka Comment
  HSC17527  Persicaria maculosa Lincoln Constance 1934-6-12 861 Humboldt N bank of S Fork Eel River, Bull Creek Rd. Comment
  CAS-BOT-BC419742  Persicaria wallichii Stuart K. Harris 1959-7-15 20144 Humboldt Falk Comment
  CHSC118462  Petasites frigidus var. palmatus Richard R. Halse 2016-3-24 9684 Humboldt Along U.S. Hwy. 101 ca. 9.6 miles south of Orick. 8 Comment
  UC1223042  Petasites frigidus var. palmatus Joseph P. Tracy 1947-2-23 17670 Humboldt near Grizzly Creek; Van Duzen River 91 Comment
  HSC13680  Phacelia bolanderi W. Lanphere 1937-5-25 Humboldt Dyerville Comment
  HSC42200  Phacelia bolanderi Ed Cope 1977-4-23 22 Humboldt 2.5 mi. S of Shelter Cove Rd., S Fork of Bear Creek at Wailaki Campground 561 Comment
  SD53212  Phacelia bolanderi D. F. Howe 1962-5-21 3300 Humboldt Hwy 101, 24.5 miles N of Garberville 60 Comment
  JEPS57406  Phacelia corymbosa L. R. Heckard 1968-7-5 1986 Humboldt Mail Ridge rd 4.3 mi n Harris road Comment
  UC176065  Phacelia heterophylla subsp. virgata Joseph P. Tracy 1913-6-21 4252 Humboldt opposite Buck Mountain; Northern Coast Ranges, valley of Van Duzen River 762 Comment
  HSC57408  Phacelia mutabilis G. L. Clifton, Griswold 1979-7-26 10163 Humboldt Near Salmon Mtn., close to the town of Forks of Salmon 2058 Comment
  HSC57855  Phacelia mutabilis G. L. Clifton 1979-7-31 11371 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  UC1199109  Phacelia nemoralis subsp. oregonensis Joseph P. Tracy and Ernest B. Babcock 1912-5-11 3624 Humboldt near Hydesville; Northern Coast Region 30 Comment
  HSC57441  Phacelia procera G. L. Clifton, Griswold 1979-7-26 10242 Humboldt Near High Spring, close to the town of Forks of Salmon 2024 Comment
  HSC58188  Phacelia procera G. L. Clifton, Griswold 1979-8-2 12278 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  UC577627  Phalaris aquatica H. S. Yates 1936-6-23 5857 Humboldt 2 mi se mouth of Mad River; Eureka Quad. Comment
  HSC10555  Phalaris arundinacea D. J. McVean 1965-5-18 79 Humboldt Along Old Arcata Rd., just S of intersection with Inidanola Rd. Arcata, CA Comment
  CAS-BOT-BC258966  Phalaris californica Joseph P. Tracy 1925-6-7 7085 Humboldt On Lord-Ellis Road, on Bald Mt. 609 Comment
  CAS-BOT-BC76571  Philadelphus lewisii Doris K. Kildale 1926-8-15 2508 Humboldt Trinity River Valley - Willow Creek Flat 152 Comment
  JEPS49601  Philadelphus lewisii W. L. Jepson 1902-7-1 1964 Humboldt Hupa Road Redwood Creek Comment
  SBBG2732  Philadelphus lewisii H. and M. Dearing 1939-6-23 3693 Humboldt 30 mi E of Arcata Comment
  UC161563  Philadelphus lewisii Joseph P. Tracy 1911-7-5 3319 Humboldt Willow Creek Northern Coast Ranges (near mouth, creek is a tributary of Trinity River) 182 Comment
  RSA0057782  Philadelphus lewisii Roxana S. Ferris 1955-7-11 12975 Humboldt Summit of U.S. Hwy 299 btwn. Willow Creek and Blue Lake. Comment
  HSC26164  Phleum alpinum J. P. Smith, Steve Selva 1970-6-30 4127 Humboldt Comment
  HSC58632  Phleum pratense Gilbert Muth 1979-7-31 11490 Humboldt Near Tish Tang A Tang Creek, S Fork, close to the town of Gasquet 1417 Comment
  RSA122919  Phlox adsurgens H. S. Yates 1936-6-22 5849 Humboldt 4 miles northeast of Bald Mountain Comment
  HSC45583  Phlox diffusa Diane L. Reed 1978-5-27 123 Humboldt Horse Mtn., Titlow Hill Rd., 3.4 mi. from junction with S.R. 299 Comment
  CHSC2361  Phyllospadix scouleri M. Anthony 1960-5-14 Humboldt Near Arcata. Comment
  CAS-BOT-BC140583  Physocarpus capitatus L. R. Abrams 1918-6-15 7129 Humboldt Brannan Mt near Willow Creek Comment
  HSC12720  Pinus contorta C. E. Fellows 1970-10-7 374 Humboldt McKinleyville 0.25 mi. W of end of Murray Rd. near dunes Comment
  HSC1478  Pinus contorta L. H. Myers 1963-5-13 21 Humboldt Dunes W of Lanpheres Rd., Mad River Slough area. Comment
  UCD134473  Pinus contorta H. E. Parks 1931-5-1 s.n. Humboldt Samoa. Comment
  HSC37669  Pinus jeffreyi R. Sutherland 1967-8-27 27 .876 Humboldt Elk Ridge, Bulk Collection # 107 716 Comment
Read comments
Apr 30 2013
  HSC95834  Pinus jeffreyi Will Ferrand 2002-4-27 33 Humboldt Off Titlow Hill Rd. 0.75 mi. S of intersection of Titlow Rd. and Hwy. 299 884 Comment
  RSA46657  Pinus monticola Doris K. Kildale 1937-8-12 15086 Humboldt South Fork Mountain. Comment
  CAS-BOT-BC79026  Pinus ponderosa L. B. Kildale 1930-8-3 10354 Humboldt Chaparral Mt. at Bug Creek 914 Comment
  UC502912  Pinus ponderosa Joseph P. Tracy 1929-4-28 8541 Humboldt Willow Creek Northern Coast Ranges, Trinity River Valley, Willow Creek 152 Comment
  UC13528  Piperia elegans Chesnut and Drew 1888-7-10 Humboldt Jarnigan's Comment
  UC14937  Piperia elegans Joseph Burtt Davy and Walter C. Blasdale 1899-6-21 57721 Humboldt Trinity Summit trail, low down North Coast Ranges, Trinity Summit Comment
  UC1222229  Plagiobothrys bracteatus Joseph P. Tracy 1948-6-13 18031 Humboldt on Larrabee Creek Road around pool (halfway between Bridgeville and Blocksburg) Comment
  UC525608  Plagiobothrys bracteatus Joseph P. Tracy 1927-5-14 8029 Humboldt moist low place at Willow Creek; Northern Coast Ranges, Trinity River Valley 152 Comment
  UC552841  Plagiobothrys bracteatus Joseph P. Tracy 1935-5-30 13916 Humboldt Willow Creek Trinity River Valley (bed of dried-up pond) 152 Comment
  HSC75440  Plagiobothrys hispidulus J. O. Sawyer 1980-7-18 3594 Humboldt North Trinity Mountain Research Natural Area, north of Mill Creek Lake to Red Cap Hole. Comment
  JEPS68075  Plagiobothrys nothofulvus W. L. Jepson 1934-5-7 16738 Humboldt Buckeye Prairie Bull Creek Comment
  UC552846  Plagiobothrys reticulatus Joseph P. Tracy 1935-5-25 13860 Humboldt Fort Seward 106 Comment
  UC1222211  Plagiobothrys reticulatus Joseph P. Tracy 1942-6-15 17137 Humboldt n side South Fork Eel River (Myers, 10 mi s Dyerville); , Myers Comment
  UC1222220  Plagiobothrys reticulatus Joseph P. Tracy 1942-6-15 17161 Humboldt 1 mi ne town [sic] Comment
  UC1222195  Plagiobothrys scouleri var. scouleri Joseph P. Tracy 1950-6-25 18900 Humboldt 3 mi s Burr Valley (near Sproston place, on road to Albee place, sw slopes Buck Mountain); Buck Mountain 1158 Comment
  UC78093  Plagiobothrys tenellus W. W. Price 1890-6-30 Humboldt Jarnigan's Comment
  SEINET12275926  Plagiobothrys trachycarpus J. P. Tracy 1942-1 17355 Humboldt 1 mi NE of Garberville 305 Comment
  JEPS7136  Plantago lanceolata Lincoln Constance 1934-5-27 700 Humboldt s end Dyerville Bridge (on South Fork Eel River); South Fork Eel River, Bull Creek Region 45 Comment
  HSC67528  Plantago lanceolata J. P. Smith, Steve Selva 1970-6-14 3838 Humboldt Along Hwy. 96 at Whitmore Creek. 152 Comment
  HSC16852  Plantago major Paul Shields Jun 1955 Humboldt 1 mi. N of Weott Comment
  HSC71375  Plantago major J. P. Smith 1971-10-9 5022 Humboldt Banks and flood plain of the Mad River above the fish hatchery. Comment
  HSC90480  Plantago maritima Jean Hanson 1981-5-10 136 Humboldt Indian Island, Humboldt Bay, city of Eureka, W end of island Comment
  UCD124624  Plantago maritima James Payne Smith Jr. 1970-6-7 3813 Humboldt 0.6 miles north of Luffenholtz Beach along California 1 near Trinidad. Comment
  HSC16831  Plantago subnuda J. P. Tracy 1906-6-17 2493 Humboldt Eureka 0 Comment
  JEPS79897  Platanthera leucostachys Joseph P. Tracy 1933-7-25 12842 Humboldt in bog Grouse Mountain 1524 Comment
  UC666988  Platanthera sparsiflora Joseph P. Tracy 1930-7-17 8990 Humboldt McKay Camp South Fork Mountain 1676 Comment
  HSC16797  Platystemon californicus J. W. Bosworth 1965-4-3 4 Humboldt Samoa sand dunes, 1 mi. SW of Fairhaven Comment
  JEPS51579  Platystemon californicus W. L. Jepson 1902-6-20 1902 Humboldt Ft. Seward Ranch Ridge 1219 Comment
  UC1540409  Platystemon californicus Gary L. Hannan 1976-5-25 166 Humboldt New Bavy Base Road, 6.6 km S of bridge to Eureka Comment
  JEPS4812  Plectritis brachystemon Joseph P. Tracy 1936-7-5 15037 Humboldt North Coast Ranges, Grouse Mountain Grouse Mountain; North Coast Ranges, Grouse Mountain 1524 Comment
  JEPS4813  Plectritis brachystemon Joseph P. Tracy 1933-5-20 12250 1/2 Humboldt Northern Coast Ranges, Mattole Valley Mattole Valley; Northern Coast Ranges, Mattole Valley 60 Comment
  SEINET6995402  Plectritis ciliosa Wanda P. Vestal, A. G. Vestal 1937-6-22 s.n. Humboldt Kneeland prairie, near serpentine outcrops, about 4 miles southeast of Kneeland. Comment
  HSC37515  Plectritis congesta A. M. Montalvo, J. D. Ackerman 1975-6-22 488 Humboldt 6.4 mi. W of Dinsmore along Hwy. 36 Comment
  RSA178587  Plectritis congesta var. congesta Joseph P. Tracy 1950-5-6 18639 Humboldt At my cabin. Trinity River Valley, at Willow Creek. Comment
  JEPS24246  Plectritis macrocera L. T. Dempster and G. L. Stebbins 1960-5-30 1204 Humboldt (third canyon) n of Woodward Ranch (e base of Pine Forest Mountains); Pine Forest Mountains 1341 Comment
  UC1145105  Pleuropogon refractus Joseph P. Tracy 1947-7-5 17812 Humboldt near Box Camp (Trinity Summit); Trinity Summit 1524 Comment
  UC1258206  Pleuropogon refractus Paul But Aug 1977 P 47 Humboldt Jacoby Creek Comment
  HSC26347  Poa annua T. O. Osborne 1970-4-5 78 Humboldt Flat-iron rock, 3/4 mi. NW of Trinidad Lighthouse. Comment
  HSC26358  Poa annua T. O. Osborne 1970-6-18 41 Humboldt Green Rock, 1-5/8 mi. N, 3/4 mi. W of Trinidad Lighthouse. Comment
  UC665695  Poa douglasii H. E. Parks May, 1934 4805 Humboldt Little River Lagoon Comment
  RSA10144  Poa howellii Joseph P. Tracy 1926-5-15 7490 Humboldt Kneeland Prairie 762 Comment
  RSA55251  Poa macrantha W. A. Silveus 1938-7-6 2916 Humboldt Stinson beach Comment
  UC60226  Poa pratensis subsp. pratensis Joseph Burtt Davy and Walter C. Blasdale 1899-6-11 5432 Humboldt near Hubbards Comment
  HSC32337  Poa secunda subsp. secunda D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5644 Humboldt Senteney Rock, a large barren Franciscan Rock along Swayback Ridge. Comment
  HSC39232  Poa secunda subsp. secunda D. E. Anderson, J. P. Smith 1971-6-18 - 1081 Humboldt Horse Mtn. Comment
  HSC70237  Poa secunda subsp. secunda M. A. Baker 1980-6-8 1901 Humboldt Near Buck Flat. 1554 Comment
  HSC75473  Poa secunda subsp. secunda J. O. Sawyer 1980-7-18 3620 Humboldt North Trinity Mountain Research Natural Area, north of Mill Creek Lake to Red Cap Hole. Comment
  UCD91730  Poa secunda subsp. secunda A. H. Murphy 1947-4-2 s.n. Humboldt 2 miles S of Blocksburg. Comment
  CAS-BOT-BC235985  Poa secunda subsp. secunda A. A. Beetle; Stebbins; Tracy 1942-6-2 3478 Humboldt Head of S Yager Creek, near Yager Comment
  RSA129470  Poa trivialis H. S. Yates 1936-6-16 5683 Humboldt Near Bayside 9 Comment
  UC1103187  Poa trivialis Joseph P. Tracy 1936-6-28 15015 Humboldt e of Korbel (Bald Mt, Murphy Meadows) 975 Comment
  RSA83441  Pogogyne douglasii F. W. Peirson 1926-7-14 7066 Humboldt Redwood Camp, Lower Eel River Comment
  CDA36977  Polycarpon tetraphyllum R. Robison Humboldt Humboldt Lagoons State Park, south of Stone Lagoon day use parking area. 0 Comment
  JEPS43006  Polygala californica W. L. Jepson 1934-5-7 16704 Humboldt in woods at border Buckeye Prairie; Bull Creek Comment
  JEPS43010  Polygala californica Lincoln Constance 1934-5-23 608 Humboldt se slope of mountain above Look Prairie; South Fork Eel River, Bull Creek Region 365 Comment
  UC668190  Polygala californica Joseph P. Tracy 1938-7-5 16002 Humboldt by old Strong's District School House (5 mi e of Carlotta); Carlotta, old Strong's District School House 45 Comment
  HSC67530  Polygala cornuta J. P. Smith, Steve Selva 1970-6-14 3841 Humboldt Along Hwy. 96 at Whitmore Creek 152 Comment
  CAS-BOT-BC167575  Polygala cornuta var. cornuta Harley P. Chandler 1901-6-1 1502 Humboldt Klamath River 426 Comment
  UC1198989  Polygala cornuta var. cornuta Joseph P. Tracy 1939-8-16 16414 Humboldt barren places Horse Mountain 1432 Comment
  UC1192343  Polygonum aviculare subsp. aviculare Malcolm A. Nobs and S. Galen Smith 1949-8-11 1344 Humboldt Stone Lagoon; marsh on e shore Comment
  UCD100266  Polygonum douglasii Joseph P. Tracy 1947-8-24 17922 Humboldt Box Camp Trail, Trinity Summit. 1676 Comment
  UC1735921  Polygonum douglasii subsp. spergulariiforme Dean W. Taylor 1991-8-15 12301 Humboldt ridge 1 mile West of Horse Mountain, 1493 Comment
  CAS-BOT-BC418615  Polygonum majus Alice Eastwood 1921-7-21 10668 Humboldt Van Duzen River Comment
  HSC17517  Polygonum paronychia J. R. Kahl 1962-4-26 18 Humboldt 1 mi. N of Samoa, 1000 yards from ocean. Comment
  HSC90239  Polygonum paronychia L. Watson, J. Meninga Mar 1991 18 Humboldt Near Manila, Mad River Slough and Dunes, SW edge of parking lot Comment
  RSA20960  Polygonum polystachyum Carl B. Wolf 1937-9-12 9334 Humboldt SW side of Eureka bordering Humboldt Bay 3 Comment
  UC1198077  Polygonum sachalinense Joseph P. Tracy 1942-9-20 17319 Humboldt along hwy near mouth of Elk River 6 Comment
  HSC70409  Polypodium californicum M. A. Baker 1980-6-7 1832 Humboldt Near Ammon Creek 732 Comment
  HSC1129  Polypodium californicum W. R. Supernaugh, Jr. 1964-12-11 13 Humboldt 200 yards S of Trinidad harbor Comment
  RSA46700  Polypodium californicum Doris K. Kildale 1928-2-19 4262 Humboldt Little River near Trindad Comment
  CAS-BOT-BC76844  Polypodium glycyrrhiza Donald Branscomb 1959-2-1 s.n. Humboldt Trinidad Comment
  JEPS33247  Polypodium glycyrrhiza Lincoln Constance 1934-5-31 748 Humboldt Bull Creek Region, S. Fork Eel R. Comment
  POM232318  Polypodium scouleri I. L. Wiggins 1930-7-11 4686 Humboldt Near Samoa Comment
  UCSB26619  Polypodium scouleri Havlik, Neil 1968-8-21 Humboldt Samoa, west of Eureka 9 Comment
  HSC38920  Polypogon monspeliensis Linda M. Barker 1976-6-1 1552 Humboldt Lanphere-Christensen Dunes, 3 mi. W of Arcata. Comment
  HSC39900  Polypogon monspeliensis J. P. Smith 1971-10-9 5035 Humboldt Banks and flood plain of the Mad River above the fish hatchery. Comment
  JEPS72929  Polypogon monspeliensis Lincoln Constance 1934-5-26 672 Humboldt sand and gravel bar of South Fork of Eel River s end Dyerville Bridge (Bull Creek Region); South Fork Eel River, Bull Creek Region 45 Comment
  UC519315  Polystichum Joseph P. Tracy 1933-10-15 13101 Humboldt along S Fork Eel River Miranda; North Coast Ranges 91 Comment
  HSC70983  Polystichum imbricans Gail Newton 1980-7-22 1662 Humboldt Near Devils Backbone 1554 Comment
  CAS-BOT-BC76764  Polystichum imbricans subsp. imbricans Henry M. Pollard 1944-9-8 s.n. Humboldt Orleans Mt. Comment
  HSC49919  Polystichum munitum Maralyn O'Meara 1973-2-9 122 Humboldt McKinleyville, N side of Mad River along N Bank Rd., 0.5 mi. E of Hwy. 101 Comment
  UCD136559  Polystichum munitum Joseph M. DiTomaso 1976-3-28 352 Humboldt West of Lord Ellis summit on Highway 299 between Arcata and Willow Creek. 762 Comment
  SEINET10793992  Polystichum munitum J. Richard Abbott, B. S. Carlsward 1999-7-7 Abbott 13008 Humboldt Leggett; Redwoods River Resort, 75000 Highway 101. Comment
  HSC31655  Populus trichocarpa Timothy B. Devine 1974-5-4 325 Humboldt Mad River floodplain 1 mi. from Blue Lake on Hatchery Rd. 305 Comment
  UC1196664  Populus trichocarpa Joseph P. Tracy 1922-10-8 6124 Humboldt Mad River at Blue Lake; Northern Coast Ranges, Mad River at Blue Lake 30 Comment
  UC1225789  Populus trichocarpa Joseph P. Tracy 1948-4-11 17970 Humboldt 2 mi e Dyerville (Eel River); Eel River 48 Comment
  UC492234  Populus trichocarpa Joseph P. Tracy 1932-4-24 9801 Humboldt South Fork of Eel River between Miranda and Redway; North Coast Ranges, South Fork of Eel River 91 Comment
  UC1116225  Potamogeton foliosus Joseph P. Tracy 1927-8-7 8308 Humboldt Willow Creek; Trinity River Valley 152 Comment
  HSC62984  Potamogeton natans David Wheeler 1979-4-20 Humboldt Clam Beach Ponds, .25 mi. S of Crannel Rd., between the frontage road and Hwy. 101 Comment
  UCSB30604  Potamogeton natans Edwards, David 1974-7-26 Humboldt Pond ca. 50 ft. NW of Grand Rd., ca. 1.5 mi. SW. of Korbel and ca. 1/2 mi. NE. of Mad River 18 Comment
  CDA837  Potamogeton nodosus E. C. Whitney 1963-9-2 s.n. Humboldt In lake of Benbow Lake State Park, south of Garberville. 0 Comment
  UC672877  Potamogeton pectinatus Joseph P. Tracy 1933-8-22 12983 Humboldt 1 mi w of Loleta (Mouth of Eel River); Eel River 3 Comment
  CAS-BOT-BC454089  Potamogeton pusillus subsp. tenuissimus William Anderson 1964-8-4 s.n. Humboldt Shore Acres. McKinleyville Comment
  CAS-BOT-BC143076  Potentilla anserina subsp. pacifica Annetta Carter 1934-8-17 719 Humboldt East shore of Big Lagoon, 35 miles north of Eureka 3 Comment
  HSC18733  Potentilla anserina subsp. pacifica W. R. Brigham 1962-5-19 13 Humboldt S of Big Lagoon. Comment
  HSC18732  Potentilla anserina subsp. pacifica D. E. Anderson 1961-9-9 1782 Humboldt Along Hwy. 101 Comment
  HSC79389  Potentilla anserina subsp. pacifica Kenneth Clark 1980-5-10 652 Humboldt Shelter Cove, western beach of Point Delgada at 10 ft. above high tide Comment
  HSC98883  Potentilla glandulosa subsp. reflexa Cara Witte 2007-7-19 550 Humboldt Forest Service Road 4N32. 1.5 miles east of intersection with 4N70. Grouse Mountain Lookout. 1547 Comment
  HSC98882  Potentilla gracilis var. fastigiata Cara Witte 2008-7-30 962 Humboldt Spike Buck Mountain. Forest Service Road 5N18. 1/2 mile from intersection with National Forest 1. 1589 Comment
  HSC57112  Prosartes hookeri Overton, Butler 1979-7-25 9855 Humboldt Near Ammon Creek, close to the town of Willow Creek. 671 Comment
  HSC15469  Prosartes smithii D. E. Anderson 1965-5-1 3578 Humboldt On Bluff Creek Rd. 4-5 mi. W of junction with Hwy. 96 Comment
  HSC15471  Prosartes smithii D. E. Anderson 1962-3-24 1946 Humboldt Along Turner Rd. Comment
  HSC100507  Prunella vulgaris Carl C. Marshall Jun 1886 249 Humboldt Everywhere. Comment
  HSC14310  Prunella vulgaris H. E. Parks, J. P. Tracy 1930-9-14 7700 Humboldt Vicinity of Bayside Comment
  HSC81963  Prunella vulgaris subsp. lanceolata Thomas W. Nelson, Jane P. Nelson 1979-7-3 4946 Humboldt Along road to Joe Losey property at junction of Kneeland and Maple Creek Rds. 610 Comment
  POM257596  Prunella vulgaris var. lanceolata H. E. Parks, S. T. Parks 1937-07 24052 Humboldt Spruce Cove, Trinidad. 61 Comment
  RSA46915  Prunus emarginata Doris K. Kildale 1926-9-5 2620 Humboldt On trail between Goat Camp and Red Peak, Lassack's Peaks 1677 Comment
  UC666845  Prunus emarginata Joseph P. Tracy 1934-9-5 13656 Humboldt Horse Mountain 1402 Comment
  HSC96233  Prunus virginiana var. demissa Sara March, Gillian Levy 2005-6-10 8 Humboldt Coldspring Camp, 7.4 mi. S of Hwy. 299 on NF1 1370 Comment
  RSA46894  Prunus virginiana var. demissa Doris K. Kildale 1927-5-20 3240 Humboldt Bug Creek. Comment
  UC1198773  Prunus virginiana var. demissa Joseph P. Tracy 1933-5-14 12176 Humboldt Trinity River Valley, at Willow Creek Willow Creek; Trinity River Valley, Willow Creek 152 Comment
  HSC37671  Pseudognaphalium luteoalbum R. Sutherland 1976-8-13 30 .13876 Humboldt In mouth of Redwood Creek at S Fork of Eel River 87 Comment
  UC1223109  Pseudognaphalium ramosissimum Joseph P. Tracy 1950-9-10 19364 Humboldt foothills 1/2 mi s Cape Town (along coast road. Cape Ridge one mi e of Cape Mendecino); Cape Ridge 152 Comment
  HSC79536  Pseudognaphalium stramineum Kenneth Clark 1979-7-1 455 Humboldt Dead Man's Gulch 9 Comment
  UC1223116  Pseudognaphalium stramineum Joseph P. Tracy 1950-7-15 19044 Humboldt e side Trinity River 1 mi n of mouth of Willow Creek; Trinity River Comment
  UC582516  Pseudognaphalium thermale Joseph P. Tracy 1935-7-31 14388 Humboldt Salmon Summit 1767 Comment
  JEPS48283  Pseudotsuga menziesii Joseph P. Tracy 1932-3-20 9782 Humboldt Trinidad North Coast Region 60 Comment
  HSC54224  Pseudotsuga menziesii var. menziesii Griswold, Butler 1979-7-12 7287 Humboldt Near Lone Pine Ridge, close to the town of Willow Creek. 1478 Comment
  HSC74314  Pteridium aquilinum var. pubescens M. A. Baker 1980-7-20 3050 Humboldt Near Bell Swamps 1463 Comment
  JEPS79952  Pterostegia drymarioides Joseph P. Tracy 1933-5-20 12226 Humboldt s point of cape; Cape Mendocino 3 Comment
  UC577346  Pycnanthemum californicum Joseph P. Tracy 1931-9-7 9637 Humboldt Trinity River Valley at Willow Creek; Trinity River Valley at Willow Creek 152 Comment
  UCR45348  Pyrola aphylla Barry Silver 1986-5-3 567 Humboldt North Coast Ranges, Forest Road 7N02 to Waterman Ridge, 7 mi from Willow Creek 976 Comment
  CAS-BOT-BC460595  Pyrola aphylla Henry M. Pollard 1948-7-23 s.n. Humboldt Perch Creek canyon near Orleans Comment
  HSC45425  Pyrola aphylla Thomas W. Nelson, Jane Nelson 1977-7-1 3556 Humboldt N side of ridge between Bear Creek & Blanket Creek 1463 Comment
  UCD117813  Pyrola aphylla K. Esau 1934-5-7 s.n. Humboldt Above Fort Seward. 609 Comment
  HSC100475  Pyrola bracteata Carl C. Marshall Jun 1885 107 Humboldt Higher hills. Comment
  HSC55231  Pyrola picta G. L. Clifton, Griswold 1979-8-2 12432 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  UC1541560  Pyrola picta Harold E. Parks 1934-6-27 5259 Humboldt Grouse Mountain Comment
  UC412735  Pyrola picta Mrs. M. H. Manning 1900-1 Humboldt near Hupa Comment
  RSA0080453  Pyrola picta C. B. Wolf 1937-8-13 9259 Humboldt North coast range, 11 mi. E. of Hoopa Valley on new road toward Trinity Summit. 1524 Comment
  HSC98830  Quercus chrysolepis Cara Witte 2008-7-10 866 Humboldt Forest Service Road 4N06A. Cow Creek Ridge. 1 mile east of National Forest 1. Under powerlines. 1254 Comment
  OBI36120  Quercus chrysolepis David J. Keil 1983-7-1 17275 Humboldt 2.5 mi NE of Honeydew along Bull Creek Flats rd Comment
  UCD82873  Quercus chrysolepis Rodney Gale Myatt 1971-9-21 1185 -6 Humboldt Near Orleans, northeast of Hoopa Reservation, along Klamath River. 185 Comment
  HSC48346  Quercus garryana Maralyn O'Meara 1974-7-11 527 Humboldt Kneeland, Barry Ridge Comment
  HSC98688  Quercus kelloggii Cara Witte 2008-10-18 1060 Humboldt Horse Mountain Botanical Area. Along Forest Service 6N36. 1248 Comment
  UC203998  Quercus kelloggii Joseph P. Tracy 1918-5-1 4895 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  UCD165089  Quercus parvula var. shrevei Lois W. Weeth; Kerry Heise and John M. Tucker 2003-10-21 s.n. Humboldt 22 mi. from Garberville along Alderpoint Rd. 116 Comment
  CHSC74987  Quercus sadleriana D. Sanchez-Mata 1997-9-20 Humboldt Hoopa. Big Hill Lookout Road. 1230 Comment
  UCD47250  Quercus sadleriana W. L. Jepson 1902-7-16 2033 Humboldt Ridges and slopes just below summit; Trinity Summit. 1524 Comment
  HSC99036  Quercus vacciniifolia Cara Witte 2008-9-27 1047 Humboldt Horse Mountain Botanical Area. Forest Service Road 6N18. At end of the road. 1407 Comment
  UC667980  Quercus vacciniifolia Joseph P. Tracy 1935-7-28 14336 Humboldt Head of Brett Hole Northern Coast Ranges, Trinity Summit 1828 Comment
  RSA178538  Quercus wislizeni Joseph P. Tracy 1950-6-15 18796 Humboldt Mail Ridge, north of Harris 7 miles Comment
  JEPS5882  Ranunculus aquatilis var. hispidulus Joseph P. Tracy 1935-5-25 13882 Humboldt Dobbyn Creek; bed of dried-up pond 152 Comment
  UC184009  Ranunculus californicus Joseph P. Tracy and Ernest B. Babcock 1912-5-11 3612 Humboldt near Hydesville; Northern Coast Region 60 Comment
  UC1103011  Ranunculus flammula J. P. Tracy 1901-5-12 1080 Humboldt immediate vicinity of Eureka 0 Comment
  UC552300  Ranunculus flammula Joseph P. Tracy 1934-7-13 13390 Humboldt Dow's Prairie 60 Comment
  UC668066  Ranunculus flammula Joseph P. Tracy 1937-5-30 15312 Humboldt shallow pool near Bosworth's; Larrabee Creek 365 Comment
  HSC49168  Ranunculus occidentalis J. O. Sawyer 1977-4-23 2837 Humboldt Along Bald Hills Rd. E of Hoopa Comment
  UC1196254  Ranunculus orthorhynchus var. orthorhynchus J. P. Tracy 1901-5-12 1075 Humboldt Immediate vicinity of Eureka 0 Comment
  HSC39607  Ranunculus orthorhynchus var. platyphyllus Thomas W. Nelson, James Nelson 1976-7-28 3081 Humboldt W of Alder Springs. 1524 Comment
  UCD97062  Ranunculus orthorhynchus var. platyphyllus R. N. Raynor 1935-5-22 s.n. Humboldt Fort Seward. Comment
  HSC90641  Ranunculus repens Gail Newton 1982-6-10 3613 Humboldt Elk River Wildlife Area, Eureka Comment
  HSC56212  Ranunculus uncinatus G. L. Clifton, Griswold 1979-8-2 12220 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  UC1196270  Ranunculus uncinatus Joseph P. Tracy 1916-5-7 4687 Humboldt Eureka Northern Coast Ranges 0 Comment
  UC1197992  Rhamnus californica Joseph P. Tracy 1934-8-4 13556 Humboldt Willow Creek Trinity River Valley 152 Comment
  UC535751  Rhamnus californica Eleanor Armstrong 1934-8-24 1142 Humboldt Richardson Grove 121 Comment
  CDA35698  Rhamnus californica subsp. occidentalis T. R. Gallion 1960-7-7 Humboldt Weitchpec. 0 Comment
  RSA246419  Rhamnus purshiana Carl B. Wolf 1937-8-13 9260 Humboldt North coast range, 11 mi. E. of Hoopa Valley on new road toward Trinity Summit. 1524 Comment
  RSA698603  Rhamnus purshiana J. R. Bruff 1937-8-17 926 Humboldt Richardson Grove. 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
  UC32620  Rhododendron macrophyllum Chesnut and Drew 1888-7-8 Humboldt near Arcata Comment
  UC562738  Rhododendron macrophyllum Joseph P. Tracy 1933-6-18 12609 Humboldt Willow Creek Canyon; Northern Coast Ranges, Willow Creek Canyon 609 Comment
  CAS-BOT-BC200377  Rhododendron occidentale var. paludosum L. R. Abrams 1922-6-25 8253 Humboldt Arcata Comment
  CAS-BOT-BC200388  Rhododendron occidentale var. paludosum Doris K. Kildale 1927-6-26 3589 Humboldt Patrick's [Patricks] Point Comment
  CAS-BOT-BC433133  Ribes Doris K. Kildale; L. B. Kildale 1930-4-27 9565 Humboldt Prairie Creek near Orick Comment
  CAS-BOT-BC92520  Ribes binominatum Joseph P. Tracy 1932-7-13 10487 Humboldt Klamath Mountains. Trinity Summit. Near Corral Prairie. 1524 Comment
  UC667066  Ribes binominatum Joseph P. Tracy 1933-8-30 13058 Humboldt on e slope Grouse Mountain (near lookout station) 1615 Comment
  UCSB24357  Ribes binominatum Tracy, Joseph 1933-7-11 Humboldt Grouse Mountain 1524 Comment
  JEPS49272  Ribes bracteosum Mrs. M. H. Manning 1901-1 Humboldt near Hupa Comment
  CAS-BOT-BC168854  Ribes inerme var. klamathense Joseph P. Tracy 1939-5-6 16281 Humboldt Lack Pond, in Trinity River Valley, opposite mouth of Willow Creek 152 Comment
  UC1198951  Ribes inerme var. klamathense Joseph P. Tracy 1935-5-30 13915 Humboldt Willow Creek Trinity River Valley 152 Comment
  HSC102560  Ribes lacustre M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-29 1547 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1579 Comment
  HSC23682  Ribes lacustre J. O. Sawyer 1971-6-14 2381 Humboldt E Fork of Horse Linto Creek at Grizzly Camp. 1341 Comment
  HSC97310  Ribes laxiflorum M. Mesler 2007-5-23 744 Humboldt Near Trinidad, trail from Mill Creek to Elk Head, along the creek near the beach. 23 Comment
  JEPS49360  Ribes lobbii Jos. P. Tracy 1913-6-17 4189 Humboldt near summit Buck Mt. Comment
  UC1541330  Ribes lobbii J. P. Tracy July 1933 Humboldt Horse Mountain Comment
  CAS-BOT-BC206036  Ribes menziesii Joseph P. Tracy 1948-2-22 17950 Humboldt Hydesville 91 Comment
  RSA0021772  Ribes menziesii Doris K. Kildale 1927-6-25 3570 Humboldt Shelter Cove. Comment
  HSC70319  Ribes roezlii M. A. Baker 1980-6-7 1870 Humboldt Near Ammon Creek 732 Comment
  RSA0024751  Ribes roezlii S. S. Tillett 1956-7-6 626 Humboldt 12.5 miles from Orleans, along Bar Shanty Road. 1174 Comment
  CAS-BOT-BC198868  Ribes roezlii var. amictum Volney Rattan 1880-1-1 s.n. Humboldt Unspecified Comment
  JEPS49463  Ribes roezlii var. cruentum Joseph P. Tracy 1922-4-30 6041 Humboldt Three Creek 670 Comment
  UC667061  Ribes roezlii var. cruentum Joseph P. Tracy 1934-3-11 13153 Humboldt French Camp Ridge 1066 Comment
  HSC100094  Ribes roezlii var. roezlii J. P. Smith, J. O. Sawyer 2010-3-22 12711 Humboldt Along Hwy. 36, E of Dinsmore. 780 Comment
  HSC47499  Ribes sanguineum Sheila Logan 1978-4-10 24 Humboldt McKinleyville, foot of Hiller Ave. at Ocean Rd., near Pacific ocean and Mad River 46 Comment
  HSC56320  Ribes sanguineum Overton, Butler 1979-8-2 12659 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  HSC71795  Ribes sanguineum Gail Newton 1980-6-16 172 Humboldt Near Monks Camp. 1097 Comment
  UC902055  Ribes sanguineum Joseph P. Tracy 1948-8-15 18133 Humboldt on ridge 2 mi e Grove's Prairie; Trinity Summit 1554 Comment
  UC1585362  Ribes sanguineum R. Raiche, K. Zadnick, and H. Forbes 1989-10-2 UCBG 24 Humboldt sw Hoopa (Gair Rd. at Pine Ridge Summit) 972 Comment
  RSA0018241  Ribes sanguineum var. glutinosum Lincoln Constance, R. C. Rollins 1942-5-11 2866 Humboldt Near summit 8 miles east of Blue Lake. Comment
  HSC102609  Ribes viscosissimum M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-28 1596 Humboldt Slopes above Bret Hole and below trail 6E18, 1.5 km SSW of Trinity Summit. 1778 Comment
  HSC32267  Ribes viscosissimum J. O. Sawyer 1970-6-24 2276 Humboldt W of Mill Creek Lakes. 1677 Comment
  HSC97475  Ribes viscosissimum Cara Witte 2007-5-23 110 Humboldt Forest Service Road 4N70 to Grouse Mountain Lookout. 1601 Comment
  UC166087  Rigiopappus leptocladus Joseph P. Tracy 1911-7-7 3405 Humboldt between Willow Creek and Campbell Creek (viz ridge n of Willow Creek near the summit); Northern Coast Ranges, Brannan Mountain 914 Comment
  UC1223447  Rigiopappus leptocladus Joseph P. Tracy 1950-7-6 18996 Humboldt on the Albee Road two mi s Burr Valley 1158 Comment
  HSC13750  Romanzoffia californica Doris K. Kildale 1926-3-21 1574 Humboldt Kneeland Prairie 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
  CAS-BOT-BC74370  Rorippa columbiae Henry M. Pollard 1956-10-9 s.n. Humboldt Near Fig Tree Riffle at Woodson Mine, Klamath River, Orleans. Comment
  HSC74755  Rorippa curvisiliqua Gail Newton 1981-8-6 2399 Humboldt Near Humbug Creek 1256 Comment
  UC492261  Rorippa palustris H. E. Parks and Joseph P. Tracy 1931-5-17 9425 Humboldt Trinity River near Willow Creek; Northern Coast Ranges, Trinity River nr Willow Creek 152 Comment
  RSA34302  Rosa eglanteria Doris K. Kildale 1925-11 1343 Humboldt Big Lagoon Comment
  CAS-BOT-BC146490  Rosa gymnocarpa Carl B. Wolf 1927-8-30 1232 Humboldt 2 mi. so. of Petrolia on Matole River near point where road crosses river Comment
  CAS-BOT-BC146491  Rosa gymnocarpa Doris K. Kildale; L. B. Kildale 1930-5-24 9550 Humboldt Hoopa Valley 152 Comment
  HSC76238  Rosa gymnocarpa Teresa Prendusi 1981-7-21 268 Humboldt Near Whiteys Peak 1646 Comment
  CAS-BOT-BC146824  Rosa nutkana Harley P. Chandler 1901-5-1 1198 Humboldt Humboldt Bay 30 Comment
  CAS-BOT-BC146827  Rosa nutkana Doris K. Kildale 1927-7-11 3716 Humboldt Blue Slide on the Van Duzen River Comment
  HSC31638  Rosa nutkana Glenn McGourty 1974-6-1 84 Humboldt Comment
  RSA201872  Rosa nutkana Geo. Parrish, G. Parrish 1930-5-21 s.n. Humboldt Trinidad. Comment
  UC709450  Rosa nutkana subsp. macdougalii Joseph P. Tracy 1941-6-29 16965 Humboldt lower foothills of nw slope Buck Mountain 762 Comment
  UC667034  Rosa pisocarpa Joseph P. Tracy 1939-8-16 16403 Humboldt Horse Mountain 1432 Comment
  CAS-BOT-BC146884  Rosa rubiginosa Doris K. Kildale 1927-7-1 3616 Humboldt Alton Hill 30 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
  CAS-BOT-BC148222  Rosa spithamea Volney Rattan 1883-6-1 s.n. Humboldt Trinity River, Coast Mts. North of San Francisco Bay Comment
  UC673070  Rubus Joseph P. Tracy 1940-10-17 16762 Humboldt near Dyerville (South Fork Station); South Fork Station (near Dyerville) 48 Comment
  CAS-BOT-BC148384  Rubus leucodermis Doris K. Kildale 1927-7-3 3662 Humboldt Willow Creek Flat 152 Comment
  CAS-BOT-BC148387  Rubus leucodermis W. R. Dudley 1899-6-20 s.n. Humboldt South Fork of Eel River Comment
  HSC57680  Rubus parviflorus G. L. Clifton, Griswold 1979-7-25 10886 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1784 Comment
  HSC22039  Rubus spectabilis B. D. Rogers, D. E. Anderson 1965-4-1 412 Humboldt 4 mi. SE of Arcata along Jacoby Creek Comment
  HSC70704  Rubus ursinus Gail Newton 1980-7-14 1546 Humboldt Near Deadman Ridge 1097 Comment
  LA208254  Rubus ursinus H. Lewis; 1940-7-3 sn Humboldt Dry lagoon Beach, State Park Comment
  UCD17617  Rubus ursinus H. Olmo; T. S. Mallah 1946-6-26 46- 047 Humboldt California. Humboldt County: 6.6 miles north of Ettersburg on road to Honeydew. Comment
  HSC98908  Rubus ursinus subsp. macropetalus Cara Witte 2007-6-1 172 Humboldt Near intersection of National Forest 1 and Forest Service Road 5N10. 1441 Comment
  HSC17569  Rumex acetosella D. B. Bader 1963-3-1 37 Humboldt Second of the Clam Beach Lagoons, W of Hwy. 101. Comment
  HSC55264  Rumex acetosella Overton, Butler 1979-8-2 12614 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  HSC17576  Rumex acetosella W. F. Nickel 1965-4-22 Humboldt HSC campus behind biological science building Comment
  HSC75496  Rumex californicus J. O. Sawyer 1980-7-18 3638 Humboldt North Trinity Mountain Research Natural Area, north of Mill Creek Lake to Red Cap Hole. Comment
  HSC17592  Rumex crispus R. J. Vernimen 1963-3-25 18 Humboldt Along railroad tracks at Clam Beach lagoons Comment
  HSC48689  Rumex crispus Brad Klipfel 1973-7-31 260 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  UC153979  Rumex occidentalis Joseph P. Tracy 1910-6-5 3148 Humboldt near Samoa; Northern Coast Region, Humboldt Bay Region 0 Comment
  UC55429 Image available Rumex salicifolius var. transitorius J. P. Tracy 1901-6-20 1157 Humboldt immediate vicinity Eureka; ; vicinity of Eureka, Humboldt Co. 0 Comment
  UCD92343  Rytidosperma penicillatum Ray Evans 1956-7-19 s.n. Humboldt Bear River, 3 miles east of Capetown. Comment
  HSC4147  Sagina apetala W. L. Jepson 1921-8-7 9337 Humboldt Stone Lagoon Comment
  HSC37955  Salicornia depressa Peter Sorensen 1976-6-2 Humboldt Humboldt Bay, Woodley Island Comment
  CDA15324  Salicornia perennis R. Spadoni 1998-10-5 s.n. Humboldt North Coast; Near Loleta. 0 Comment
  UC1196721  Salix Joseph P. Tracy 1935-4-17 13775 Humboldt Alton to Fortuna; Eel R. 15 Comment
  CAS-BOT-BC103823  Salix exigua Harold E. Parks 1931-5-14 0964 Humboldt Van Duzen River between Alton and Carlotta 15 Comment
  UC512028  Salix exigua var. hindsiana Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-17 1330 Humboldt near bridge on Trinity Hwy. Trinity R. 152 Comment
  UC519381  Salix exigua var. hindsiana Joseph P. Tracy 1933-5-19 12203 Humboldt Alton to Fortuna; Northern Coast Region, Eel R. 15 Comment
  CAS-BOT-BC104103  Salix hindsiana Harold E. Parks 1931-5-14 0958 Humboldt Fernbridge, Eel River 10 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-BC106852  Salix hookeriana Harold E. Parks 1931-5-12 0952 Humboldt Samoa, Humboldt Bay Comment
  CAS-BOT-BC107706  Salix hookeriana Harold E. Parks 1931-3-24 915 a Humboldt Trinidad 90 Comment
  CAS-BOT-BC107764  Salix hookeriana Harold E. Parks; Carleton R. Ball; Joseph P. Tracy 1932-5-11 1214 Humboldt In pine barrens near the coast, 1 mile north of Samoa. Comment
  CAS-BOT-BC107769  Salix hookeriana Harold E. Parks; Carleton R. Ball; Joseph P. Tracy 1932-5-11 1222 Humboldt In pine barrens near the coast, 1 mile north of Samoa. Comment
  HSC19965  Salix hookeriana H. E. Parks, S. T. Parks 1932-4-5 1100 Humboldt Little River Comment
  HSC90432  Salix hookeriana Jean Hanson 1980-3-8 19 Humboldt Indian (Gunther) Island, Humboldt Bay, Eureka, W end of island Comment
  HSC96362  Salix hookeriana Gordon Leppig 1999-7-9 1184 Humboldt Big Lagoon County Park; Big Lagoon Bog 3 Comment
  JEPS12927  Salix hookeriana Joseph P. Tracy 1931-5-3 9356 Humboldt near Luffenholz Creek (near ocean); Northern Coast Region, Trinidad 60 Comment
  UC1196545  Salix hookeriana Joseph P. Tracy 1932-5-10 9951 Humboldt Mattole R. near Petrolia; North Coast Region, Mattole R. 15 Comment
  UC1196557  Salix hookeriana Joseph P. Tracy 1933-11-12 13114 Humboldt along S. Fork Eel R. Miranda; North Coast Ranges 91 Comment
  UC1225775  Salix hookeriana Joseph P. Tracy 1948-4-4 17957 Humboldt sand dunes near Samoa; Humboldt Bay 6 Comment
  UC275501  Salix hookeriana Joseph P. Tracy 1925-11-15 7314 Humboldt lowlands at foot of Table Bluff (near Salmon Creek); Northern Coast Ranges, Humboldt Bay 6 Comment
  UC469112  Salix hookeriana Joseph P. Tracy 1931-8-23 9620 Humboldt sand dunes near Samoa; Northern Coast Region, on Humboldt Bay 6 Comment
  UC469113  Salix hookeriana Joseph P. Tracy 1931-8-23 9623 Humboldt sand dunes near Samoa (on Humboldt Bay); Northern Coast Region, Humboldt Bay 6 Comment
  UC469122  Salix hookeriana Joseph P. Tracy 1927-5-1 7953 Humboldt sand dunes near Samoa; Northern Coast Region, Humboldt Bay 6 Comment
  UC469123  Salix hookeriana Joseph P. Tracy 1927-9-25 8381 Humboldt Still place Northern Coast Region, around Humboldt Bay (adjacent to swamp) 6 Comment
  UC470424  Salix hookeriana Joseph P. Tracy 1931-9-27 9691 Humboldt Alton to Fortuna (on gravel bars); Northern Coast Region, Eel River 15 Comment
  UC481395  Salix hookeriana Harold E. Parks 1931-3-24 914 Humboldt Fortuna Eel River (bank of river) 10 Comment
  UC504055  Salix hookeriana Jim Davis Apr 25 1933-Apr 27 1933 4 Humboldt around Eureka 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
  UC512083  Salix hookeriana Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-11 1223 Humboldt 1 mi n Samoa (pine barrens near the coast) Comment
  UC512099  Salix hookeriana Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-11 1210 b Humboldt 4 1/2 mi s Trinidad; Little River Lagoon Comment
  UC519325  Salix hookeriana Joseph P. Tracy 1933-10-8 13089 Humboldt on Van Duzen R. Blue Slide; Northern Coast Ranges 91 Comment
  UC709425  Salix hookeriana Joseph P. Tracy 1941-3-9 16801 Humboldt along Eel R. Camp Grant; Eel R. 48 Comment
  UCD111036  Salix hookeriana Linda M. Barker 1976-4-13 1382 Humboldt 3 miles west of Arcata. Comment
  HSC56151  Salix jepsonii G. L. Clifton, Griswold 1979-8-1 12002 Humboldt Near N Trinity Mtn., close to the town of Hoopa. 1798 Comment
  HSC19985  Salix lasiandra J. P. Tracy 1933-7-16 12772 Humboldt S Fork Mtn., Mckay Camp 1677 Comment
  UC492331  Salix lasiandra subsp. lasiandra Harold E. and Susan T. Parks 1932-4-10 1101 Humboldt Little River Lagoon Trinidad; , Little River Lagoon Comment
  CAS-BOT-BC125216  Salix lasiandra var. lasiandra W. J. Ferlatte 1967-6-13 1120 Humboldt Cranell 3 Comment
  CAS-BOT-BC107101  Salix lasiolepis Joseph P. Tracy 1934-3-11 13146 Humboldt Weitchpec, frequent along Klamath River 91 Comment
  CAS-BOT-BC107590  Salix lasiolepis Joseph P. Tracy; Carleton R. Ball; Harold E. Parks 1932-5-17 1321 Humboldt On banks of Redwood Creek, at Berry's, on Trinity Highway 274 Comment
  CAS-BOT-BC107622  Salix lasiolepis Joseph P. Tracy 1933-4-9 10966 Humboldt Bridgeville, along Van Duzen R. 228 Comment
  JEPS14772  Salix lasiolepis Joseph P. Tracy 1933-4-2 10960 Humboldt on Trinity Hwy. Berry's Mt. (e of Redwood Creek); Northern Coast Ranges 762 Comment
  UC212998  Salix lasiolepis Joseph P. Tracy 1919-9-13 5197 Humboldt near Willow Creek Trinity R. Valley; Northern Coast Ranges, Trinity R. Valley 152 Comment
  UC469408  Salix lasiolepis Joseph P. Tracy 1927-3-27 7869 Humboldt at Berry's Redwood Creek; Northern Coast Ranges, Redwood Creek 274 Comment
  UC469439  Salix lasiolepis Joseph P. Tracy 1931-11-8 9753 Humboldt Blue Slide Van Duzen River 91 Comment
  UC490464  Salix lasiolepis Joseph P. Tracy 1932-9-5 10766 Humboldt Mattole R. near Petrolia; North Coast Region, Mattole R. 15 Comment
  UC490551  Salix lasiolepis Joseph P. Tracy 1932-3-6 9776 Humboldt at Willow Creek Trinity R. Valley; Northern Coast Ranges, Trinity R. Valley 152 Comment
  UC495612  Salix lasiolepis Joseph P. Tracy 1932-10-12 10875 Humboldt Miranda Northern Coast Ranges, South Fork of Eel River 121 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
  UC506390  Salix lasiolepis Joseph P. Tracy 1932-10-8 10867 Humboldt Berry's Mt. Northern Coast Ranges (on Trinity Hwy) 762 Comment
  UC511991  Salix lasiolepis Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-12 1241 Humboldt Blue Slide Van Duzen River 91 Comment
  UC512018  Salix lasiolepis C. R. Ball, H. E. Parks, and J. P. Tracy 1932-5-17 1340 Humboldt near pond at Willow Creek (Graham Ranch) near junction with Trinity River 152 Comment
  UC519350  Salix lasiolepis Joseph P. Tracy 1933-11-12 13116 Humboldt along S. Fork Eel R. Miranda; North Coast Ranges, S. Fork Eel R. 91 Comment
  UCD111588  Salix lasiolepis Carleton R. Ball; Harold E. Parks, Joseph P. Tracy 1932-5-17 01323 Humboldt West slope of Berry's Mountain, east of Redwood Creek, on Trinity Highway. 762 Comment
  CAS-BOT-BC107290  Salix lasiolepis var. bigelovii Carleton R. Ball; Harold E. Parks; Joseph P. Tracy 1932-5-12 01239 Humboldt floodplain of Van Duzen River at Blue Slide 91 Comment
  CAS-BOT-BC107291  Salix lasiolepis var. bigelovii Carleton R. Ball; Harold E. Parks; Joseph P. Tracy 1932-5-12 01247 Humboldt floodplain of Van Duzen River at Blue Slide 91 Comment
  CAS-BOT-BC107300  Salix lasiolepis var. bigelovii Doris K. Kildale 1926-12-19 2873 Humboldt South Fork 51 Comment
  CAS-BOT-BC107416  Salix lasiolepis var. lasiolepis Doris K. Kildale 1926-9-17 2802 Humboldt [Dobbyns] Dobbyn Creek Comment
  RSA178543  Salix lasiolepis var. sandbergii Joseph P. Tracy 1950-4-20 18623 Humboldt Van Duzen River. 10 miles SE of Dinsmore's. About 4 miles SE of Kuntz. Comment
  SBBG57838  Salix lucida subsp. lasiandra H. E. Parks 1931-3-24 911 Humboldt banks of Eel River, Fortuna 10 Comment
  CAS-BOT-BC125615  Salix melanopsis Carleton R. Ball; Harold E. Parks; Joseph P. Tracy 1932-5-13 01252 Humboldt On floodplain of Mad River at Engelhart gravel pit, 2 miles east of Redwood Highway and above Blue Lake Road Comment
  CAS-BOT-BC125634  Salix melanopsis Mrs. H. P. Bracelin 1931-5-2 283 Humboldt East of Redwood Highway, 6 km. south of Alton 20 Comment
  CAS-BOT-BC125637  Salix melanopsis Mrs. H. P. Bracelin 1931-5-2 284 Humboldt East of Redwood Highway, 6 km. south of Alton 20 Comment
  UC1196568  Salix melanopsis Joseph P. Tracy 1932-5-1 9848 Humboldt along Van Duzen R. Alton; North Coast Ranges, Van Duzen R. 30 Comment
  UC162649  Salix melanopsis Joseph P. Tracy 1911-7-4 3295 Humboldt near its mouth Willow Creek; Northern Coast Ranges, Willow Creek - tributary of Trinity R 182 Comment
  UC490556  Salix melanopsis C. R. Ball, H. E. Parks and Joseph P. Tracy 1932-5-17 10069 Humboldt Redwood Creek at Berrys; North Coast Ranges, Redwood Creek 274 Comment
  UC511973  Salix melanopsis Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-13 1252 Humboldt Mad River at Engelhart gravel pit (2 mi. e. of Redwood Hwy. and above Blue Lake Rd.) Comment
  UC519361  Salix melanopsis Joseph P. Tracy 1933-6-7 12513 Humboldt on Van Duzen R. Blue Slide; Northern Coast Ranges, Van Duzen R. 91 Comment
  UC519366  Salix melanopsis Joseph P. Tracy 1933-7-20 12804 Humboldt Mad R. near Blue Lake; Northern Coast Region, Mad R. 15 Comment
  UC906708  Salix melanopsis Harold E. Parks and Joseph P. Tracy 1942-5-16 11554 Humboldt vicinity of Garberville Garberville 152 Comment
  SEINET7545185  Salix melanopsis H. E. Parks 1931-1 0962 Humboldt Van Duzen River between Alton and Carlotta 5 Comment
  CAS-BOT-BC129138  Salix scouleriana Joseph P. Tracy 1932-7-13 10507 Humboldt Open ground at Corral Prairie - Trinity Summit, Klamath Mountains 1524 Comment
  CAS-BOT-BC129158  Salix scouleriana Joseph P. Tracy 1937-3-21 15238 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
  HSC37875  Salix scouleriana Thomas W. Nelson 1976-3-22 2277 Humboldt S side of the Eureka Muni Golf Course Comment
  SBBG57977  Salix scouleriana H. E. Parks 1931-5-12 955 a Humboldt Samoa, Humboldt Bay Comment
  UC1173630  Salix scouleriana Joseph P. Tracy 1937-3-21 15236 Humboldt Van Duzen R. near Grizzly Creek; Van Duzen R. 91 Comment
  UC1196699  Salix scouleriana Joseph P. Tracy 1919-9-14 5204 Humboldt Trinity R. Valley near Willow Creek; Northern Coast Ranges, Trinity R. Valley 152 Comment
  UC1196710  Salix scouleriana Joseph P. Tracy 1936-2-2 14768 Humboldt vicinity of Carlotta Carlotta 30 Comment
  UC490507  Salix scouleriana Joseph P. Tracy 1932-8-11 10338 Humboldt Bridgeville Northern Coast Ranges, Bridgeville 228 Comment
  CAS-BOT-BC129000  Salix sitchensis Harold E. Parks 1931-5-28 1026 Humboldt Little River Lagoon, at sea level. Comment
  HSC20099  Salix sitchensis H. E. Parks, S. T. Parks 1932-4-12 1111 Humboldt Blue Slide, Van Duzen River Comment
  UC1222295  Salix sitchensis Joseph P. Tracy 1950-9-10 19365 Humboldt along coast rd. 1 mi. inland from Cape Mendocino (1/2 mi. s. of town); Foothills of Cape Ridge 60 Comment
  UC490532  Salix sitchensis Joseph P. Tracy 1932-7-18 10724 Humboldt head of Brett Hole; Klamath Mts., Trinity Summit 1828 Comment
  UC490533  Salix sitchensis Joseph P. Tracy 1932-7-16 10646 Humboldt open ground at Corral Prairie; Klamath Mts., Trinity Summit, Corral Prairie 1524 Comment
  UC1196608  Salix tracyi Joseph P. Tracy 1926-8-12 7761 Humboldt Redwood Creek, at Berry's 274 Comment
  HSC56467  Sambucus nigra subsp. caerulea Griswold, Butler 1979-7-12 7275 Humboldt Near Cedar Creek, close to the town of Willow Creek 1158 Comment
  CHSC68492  Sambucus racemosa var. racemosa Vernon H. Oswald 1997-4-10 8322 Humboldt Elk Head, north end of Trinidad State Beach. 30 Comment
  UC1199042  Sanguisorba annua Joseph P. Tracy 1936-6-17 14974 Humboldt at crossing road from Bridgeville to Trinity Co. Little Van Duzen River 713 Comment
  CAS-BOT-BC157200  Sanguisorba officinalis L. B. Kildale 1930-7-11 10208 Humboldt Snow Camp head of Redwood Creek Comment
  RSA86658  Sanguisorba officinalis subsp. microcephala F. W. Peirson 1941-7-28 13102 Humboldt About 10 miles below Patrick's Creek Camp Comment
  UC154106  Sanicula arctopoides J. P. Tracy 1904-4-24 2021 Humboldt opposite Eureka (Ocean Beach at Samoa); Samoa, Ocean Beach Comment
  BLMAR57  Sanicula arctopoides Jennifer Anthony-Wheeler 1994-2-24 57 Humboldt Samoa dunes, growing in Samoa Dunes rare plant area in dune mat habitat 12 Comment
  SEINET3157023  Sanicula crassicaulis D. E. Anderson 1965-5-1 3563 Humboldt along Highway 96, 1.9 miles north of Willow Creek Comment
  UC642273  Sanicula graveolens Joseph P. Tracy 1932-7-12 10465 Humboldt Trinity Summit, Head of Brett Hole Brett Hole; Trinity Summit, Brett Hole 1828 Comment
  CHSC60487  Sanicula tracyi Lisa D. Hoover 1992-6-16 Humboldt Six Rivers National Forest. East side of Whiting Ridge off Route 1 before 'Last Chance Ridge' approximately 27 miles off Hwy 299. 1267 Comment
  HSC45599  Sanicula tracyi Thomas W. Nelson 1978-5-27 4091 Humboldt McKneown Ranch N of Dinsmore. Comment
  HSC82107  Sanicula tracyi Thomas W. Nelson, Jane P. Nelson 1980-5-25 5248 Humboldt Along road from Dinsmore to Anderson Crossing, McKeown Ranch Rd. 100 m N of junction of road to Hindley Cabin 823 Comment
  HSC73546  Sanicula tuberosa Gail Newton 1980-7-14 1471 Humboldt Near Last Chance Ridge. 1219 Comment
  HSC32275  Sarcodes sanguinea D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-13 5629 Humboldt Westward lower slopes of Black Lassic near Trinity Co. line. 1585 Comment
  UC1198879  Saxifraga californica Joseph P. Tracy 1927-4-2 7882 Humboldt facing South Fork Eel River ( Phillipsville); Northern Coast Ranges, Phillipsville 121 Comment
  UC902010  Saxifraga marshallii Joseph P. Tracy 1948-5-15 17978 Humboldt Willow Creek Canyon, along Trinity Highway at the East Fork Willow Creek Canyon 457 Comment
  OBI9752  Saxifraga mertensiana Carl B. Wolf 1941-3-2 9991 Humboldt N Coast Range, 2 mi S of Honeydew along Honeydew crk 152 Comment
  JEPS26213  Saxifraga oregana Joseph P. Tracy 1932-7-14 10566 Humboldt Trinity Summit, at Corral Prairie Trinity Summit; Klamath Mountains, , Corral Prairie 1524 Comment
  UC314581  Scandix pecten-veneris Joseph P. Tracy 1923-6-20 6342 Humboldt Northern Coast Ranges, Garberville Garberville; Northern Coast Ranges, Garberville 121 Comment
  CHSC69506  Schoenoplectus pungens Vernon Oswald; Lowell Ahart 1997-9-4 8848 Humboldt North Coast Region. Big Lagoon County Park at the southwest edge of Big Lagoon. Meadowy area bordering a small drainage entering the lagoon at the boat ramp. 3 Comment
  UCD60367  Schoenoplectus pungens var. badius Gordon Leppig 1998-6-25 855 Humboldt McKinleyville, Mad River Estuary at end of Murray Rd. 0 Comment
  UC1541346  Scirpus acutus var. occidentalis Harold E. Parks Aug 1934 5156 a Humboldt Dry Lagoon Comment
  UC198641  Scirpus cernuus Joseph P. Tracy 1917-6-10 4821 Humboldt at Eureka; Northern Coast Region, at Eureka 0 Comment
  CDA39134  Scirpus koilolepis Gordon Leppig 1999-10-3 1257 Humboldt Big Lagoon County Park, Big Lagoon Bog. Comment
  UC183949  Scirpus maritimus Joseph P. Tracy 1909-9-19 3099 Humboldt Samoa Northern Coast Region, region about Humboldt Bay, Samoa 0 Comment
  UC668015  Scirpus maritimus Joseph P. Tracy 1934-10-13 13684 Humboldt Big Lagoon Big Lagoon (near shore) 3 Comment
  HSC36890  Scirpus microcarpus Thomas W. Nelson, Jane P. Nelson, James Nelson 1975-7-20 2058 Humboldt Beside Rd. 2S08 to Pine Mtn. Comment
  POM292611  Scoliopus bigelovii Lyman Benson 1927-7-12 818 Humboldt Weott Ranger Station; Mt. Range: Seaward N Coast; River: South Fork Eel. 61 Comment
  UCD18586  Scoliopus bigelovii Roman Gankin 1956-3-17 104 Humboldt off US Hwy 101, south boundary of Jenson Grove, near creek. Comment
  HSC59743  Scrophularia californica Clark L. Miller 1979-5-9 6117 Humboldt Samoa Dunes W of Samoa Blvd. Comment
  UCD124815  Scrophularia californica Linda M. Barker 1976-5-13 1473 Humboldt Lanphere-Christensen Dunes, 3 miles west of Arcata. Comment
  HSC100682  Scrophularia californica Carl C. Marshall Apr 1886 175 Humboldt Everywhere. Comment
  HSC65898  Sedum laxum subsp. heckneri M. A. Baker 1980-6-16 1926 Humboldt Near Monks Camp. 1097 Comment
  UC667081  Sedum laxum subsp. heckneri Joseph P. Tracy 1935-7-30 14363 Humboldt Salmon Summit 1767 Comment
  HSC74677  Sedum spathulifolium Gail Newton 1981-5-16 2170 Humboldt Near Bug Creek. 1228 Comment
  JEPS40925  Sedum spathulifolium Paul C. Hutchison 1962-7-13 2085 Humboldt mouth of Little River, Hwy 101, N end of bridge Trinidad Beach State Park Comment
  UC1225751  Sedum spathulifolium Joseph P. Tracy 1948-5-15 17981 1/2 Humboldt along Trinity Highway Willow Creek Canyon (on rocks at the East Fork Willow); East Fork Willow Creek, Willow Creek Canyon 457 Comment
  HSC63239  Sedum spathulifolium var. spathulifolium M. A. Baker 1979-6-7 801 Humboldt Hwy. 299, 3 km N of Berry Summit Comment
  UCD135986  Selaginella kraussiana Frederic Hrusa; R. Bencie, L. Bencie, C. and E. Dogwin 2010-12-29 18277 Humboldt Forest E of Humboldt St. University; above Fern Lake. 47 Comment
  HSC89451  Selaginella oregana P. A. Daly 1986-3-12 85 Humboldt Trinidad Head 61 Comment
  UC302053  Selaginella wallacei Joseph P. Tracy 1912-7-26 3850 Humboldt Kneeland Prairie; Northern Coast Ranges 762 Comment
  HSC95089  Senecio elegans Andrea Pickart 2002-6-4 116 Humboldt N of 'Power pole' site Comment
  UC1118078  Senecio glomeratus H. L. Person 1932-7-16 Humboldt hwy n of Trinidad; Rock Point Quadrangle Comment
  HSC48867  Senecio integerrimus Brad Klipfel 1973-6-10 62 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC70329  Senecio integerrimus M. A. Baker 1980-6-8 1884 Humboldt Near Buck Flat. 1554 Comment
  CAS-BOT-BC364018  Senecio integerrimus var. major L. B. Kildale 1928-5-27 5957 Humboldt Kneeland Prairie 853 Comment
  CAS-BOT-BC364022  Senecio integerrimus var. major Doris K. Kildale 1928-5-19 5173 Humboldt Chalk Mountain Comment
  HSC39001  Senecio integerrimus var. major Thomas W. Nelson, Jane P. Nelson 1976-5-31 2653 Humboldt N of junction of FS Rds. 1S07 and 5E27 along 5E27 1524 Comment
  UC1199241  Senecio integerrimus var. major Joseph P. Tracy 1938-5-1 15728 Humboldt Willow Creek Trinity River Valley 152 Comment
  HSC39967  Senecio vulgaris Linda M. Barker 1976-3-22 1337 Humboldt 3 mi. W of Arcata Comment
  HSC59561  Senecio vulgaris Rick Lundquist 1979-4-27 46 Humboldt N Spit, across from Samoa boat ramp N of U.S. Coast Guard Station. 0 Comment
  HSC85756  Sequoia sempervirens R. W. Becking 1985-1-17 Humboldt HSU Campus, NRS Building SW corner Comment
  POM181978  Sequoia sempervirens J. G. Lemmon 1901-09 s.n. Humboldt Eureka Comment
  SBBG56416  Sequoia sempervirens D. B. Rogers 1937-10-1 Humboldt Scotia, 37 mi S of Eureka Comment
  UC1196920  Sequoia sempervirens Mabel Griffin 1930-4-1 Humboldt above Dyerville; South Fork Eel River 60 Comment
  CAS-BOT-BC205574  Sidalcea malachroides Joseph P. Tracy 1936-5-17 14812 Humboldt Fickle Hill, 6 miles Southeast of Arcata 609 Comment
  CAS-BOT-BC205577  Sidalcea malachroides F. H. Utech 1986-5-23 86 -399 Humboldt Ca. 3.0 mi NW of Petrolla on Mattole Road (Humboldt Co. hwy F3C) enroute to Capetown 80 Comment
  JEPS67224  Sidalcea malachroides Joseph P. Tracy 1918-7-1 4964 Humboldt along Eel River from South Fork to Scotia; Northern Coast Ranges, Eel River from South Fork to Scotia 60 Comment
  UC18701  Sidalcea malachroides J. Burtt Davy 1899-6-13 5482 Humboldt Englewood Prairie North Coast Ranges, Englewood Prairie Comment
  SEINET11994388  Sidalcea malachroides F. H. Utech 1986-1 86 -399 Humboldt ca 3 mi NW of Petrolla on Mattole Road (Humboldt County F3C) enroute to Capetown 80 Comment
  POM160836  Sidalcea oregana subsp. eximia Joseph P. Tracy 1920-7-25 5344 Humboldt Dows Prairie 61 Comment
  UC668141  Sidalcea oregana subsp. eximia Joseph P. Tracy 1937-7-16 15432 Humboldt Dow's Prairie 60 Comment
  HSC104342  Sidalcea oregana subsp. eximia James Regan, Humboldt Redwood Co., LLC 2 Humboldt Table Bluff 46 Comment
  HSC102531  Sidalcea oregana subsp. oregana M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-29 1517 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1579 Comment
  UC465673  Silene californica Mrs. M. H. Manning 1900-1 Humboldt Hoopa Valley Comment
  UC1198352  Silene campanulata Joseph P. Tracy 1947-7-9 17852 Humboldt Horse Mountain Northern Coast Ranges, Horse Mountain 1432 Comment
  UC8432  Silene campanulata subsp. campanulata Bolander 1866-1 6517 Humboldt Red Mountain Comment
  HSC74495  Silene campanulata subsp. glandulosa M. A. Baker 1980-7-24 3210 Humboldt Near Orleans Mtn. 1625 Comment
  UC302999  Silene campanulata subsp. glandulosa Joseph P. Tracy 1926-6-20 7623 Humboldt Horse Mountain Northern Coast Ranges, Horse Mountain 1524 Comment
  CAS-BOT-BC387080  Silene gallica H. E. Parks; S. T. Parks 1936-6-1 5634 Humboldt Spruce Cove, Trinidad Comment
  HSC36645  Silene gallica J. D. Ackerman 1974-5-25 261 Humboldt Trinidad, South Trinidad Beach, S of Trinidad Head. Comment
  HSC57998  Silene grayi G. L. Clifton, Griswold 1979-7-31 11767 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1805 Comment
  CAS-BOT-BC389060  Silene laciniata subsp. californica Lincoln Constance; Alan A. Beetle 1940-5-16 2610 Humboldt Coastal bluffs above Alton Comment
  CAS-BOT-BC389061  Silene laciniata subsp. californica Lincoln Constance; Alan A. Beetle 1940-5-16 2610 Humboldt Coastal bluffs above Alton Comment
  UC465640  Silene latifolia subsp. alba Mrs. M. H. Manning 1901-1 Humboldt near Hupa (Hoopa Valley); near Hupa, Hoopa Valley Comment
  RSA595780  Silene lemmonii R. S. Woglum 1931-7-15 24 B Humboldt Outer Coast Ranges, Sequoia Park. Comment
  RSA168876  Silene verecunda subsp. platyota Joseph P. Tracy 1951-6-26 19586 Humboldt North side of Board Camp Mountain, at extreme head of Redwood Creek. 1541 Comment
  HSC23752  Sisyrinchium bellum Tim Baroni 1971-7-6 116 Humboldt 8 mi. S of Ferndale on Mattole Rd. Comment
  HSC49362  Sisyrinchium bellum R. York 1979-4-13 219 Humboldt Just N of College Cove, 1 mi. N of Trinidad Comment
  SEINET3876425  Sisyrinchium bellum C. C. Harris 1942-6-9 1219 Humboldt 3 miles north and 1 mile west of Fernbridge.; 0 33 Comment
  HSC90646  Sisyrinchium californicum Gail Newton 1983-6-5 3553 Humboldt Elk River Wildlife Area, Eureka Comment
  HSC48534  Sisyrinchium californicum Mark Flippo 1978-4-18 25 Humboldt McKinleyville, Bella Vista Hill Comment
  UC1192312  Sisyrinchium californicum Malcolm A. Nobs, S. Galen Smith 1949-8-3 1196 Humboldt at the suthern outskirts of Eureka Comment
  UC1197804  Smilacina racemosa Joseph P. Tracy 1936-8-7 15106 Humboldt 2 mi se Devil's Hole; Trinity Summit 1584 Comment
  UC1197803  Smilacina racemosa Joseph P. Tracy 1927-6-12 8150 Humboldt Horse Mountain; below top of mt. 1280 Comment
  RSA424568  Solanum americanum T. S. Elias, Barbara A. Elias 1987-8-26 10629 Humboldt Fernbridge, 0.5 mile S of Route 101; along West bank of Eel River, about 0.5 mile N of bridge Comment
  UC1196154  Solanum umbelliferum Joseph P. Tracy 1937-7-2 15406 Humboldt head of Little Hors-Linto Creek (Trinity Summit); , Little Hors-Linto Creek 1371 Comment
  UC1196153  Solanum umbelliferum Joseph P. Tracy 1934-6-20 13240 Humboldt Carlotta; Northern Coast Ranges, Carlotta 60 Comment
  UC154013  Solanum umbelliferum Joseph P. Tracy 1907-8-20 2601 Humboldt near Hydesville (Northern Coast Region); Northern Coast Region 60 Comment
  POM237410  Solidago canadensis subsp. elongata H. E. Parks, S. T. Parks 1937-09 24081 Humboldt Spruce Cove, Trinidad. 64 Comment
  UC1541616  Solidago elongata Harold E. Parks Jul 1 1931-Aug 1 1931 1056 Humboldt Trinidad 76 Comment
  UC524127  Solidago elongata Ira L. Wiggins 1932-7-25 5895 Humboldt near McKinleyville Comment
  CHSC109579  Solidago spathulata B. Castro; L. P. Janeway 2004-9-10 1474 Humboldt North Coast. South Spit of Humboldt Bay, 2.2 mi NNE of Table Bluff Lighthouse site: on other side of South Spit Road from the Humboldt Bay mudflats. 2 Comment
  HSC46962  Solidago spathulata J. P. Smith, Thomas W. Nelson 1977-6-30 9219 Humboldt Samoa Peninsula just E of the drag strip. Comment
  RSA89769  Solidago spathulata P. A. Munz 1954-7-25 19873 Humboldt At Humboldt Lighthouse south of Samoa. Comment
  SD38301  Solidago spathulata Edith A. Purer 1932-7-30 4673 Humboldt South of Orick Comment
  UC582629  Soliva sessilis Joseph P. Tracy 1936-6-3 14852 Humboldt Trinity River Valley at Willow Creek; Trinity River Valley, Willow Creek 152 Comment
  CAS-BOT-BC374428  Sonchus asper Joseph P. Tracy 1932-5-22 10115 Humboldt North Coast Ranges. South Fork of Eel River, between Miranda and Redway 91 Comment
  HSC21348  Sparganium emersum D. E. Anderson 1961-9-9 1788 Humboldt Along S end of Hwy. 101 causeway over Big Lagoon. Comment
  UC1099915  Sparganium emersum var. emersum Malcolm A. Nobs and S. Galen Smith 1949-8-9 1228 Humboldt 1 mi n Arcata (at junction of Highway 101 and Highway 299); Mad River Valley Comment
  UC672885  Sparganium emersum var. emersum Joseph P. Tracy 1928-9-2 8499 Humboldt near Fruitland 609 Comment
  CDA26356  Spartina densiflora G. D. Barbe, T. C. Fuller 1989-6-7 4320 Humboldt Tidal flat 0.4 miles north of Highway 255 bridge, at New Naval Base Road. 0 Comment
  HSC93849  Spartina densiflora Gordon Leppig, Kai Neander 1999-4-30 1130 Humboldt Humboldt Bay, Eureka, 30 m S of Del Norte St. fishing pier 1 Comment
  OBI36628  Spartina densiflora David J. Keil 1983-7-2 17296 Humboldt Humboldt Bay salt marsh at Arcata Corp Yard Comment
  HSC91608  Spergula arvensis E. Mackey 1987-1-17 Humboldt Patricks Point State Park, parking lot near Ceremonial Rock Comment
  CAS-BOT-BC390304  Spergularia macrotheca var. macrotheca S. K. Harris 1936-6-7 3225 Humboldt Eureka Comment
  POM160286  Spiraea densiflora Joseph P. Tracy 1926-6-20 7630 Humboldt Horse Mountain. 1463 Comment
  SBBG3128  Spiraea douglasii M. J. Cody 1938-7-14 Humboldt near Trinidad Comment
  UC14209  Spiraea douglasii Chesnut and Drew 1888-8-10 Humboldt Arcata Comment
  UC666997  Spiranthes porrifolia Joseph P. Tracy 1930-6-15 8767 Humboldt summit of ridge between Dobbyn Creek and Alder Point (near Alder Point) 304 Comment
  UC1196401  Spiranthes romanzoffiana Joseph P. Tracy 1941-8-24 17037 Humboldt near McKay Camp; South Fork Mountain 1676 Comment
  HSC99127  Stachys ajugoides Cara Witte 2008-7-10 863 Humboldt Forest Service Road 4N06. 2 miles west of National Forest 1. 1195 Comment
  UC1602161  Stachys ajugoides var. rigida Joseph P. Tracy 1938-6-17 15954 Humboldt Cape Mendocino 152 Comment
  UC668219  Stachys ajugoides var. rigida Joseph P. Tracy 1938-6-15 15937 Humboldt vicinity Carlotta 30 Comment
  BLMAR186  Stachys bergii Donald Hazlett 1994-6-7 186 Humboldt King range, near horse Mt. Ridge rd 670 Comment
  POM283279  Stachys bullata Lyman Benson 1928-7-10 s.n. Humboldt Fortuna , Seaward N Coast, Mouth of Eel River. 46 Comment
  HSC14419  Stachys mexicana William J. Ferlatte 1963-5-8 40 Humboldt Near B and 17th Sts., Arcata. Comment
  HSC27045  Stachys mexicana Brad Klipfel 1973-8-25 289 Humboldt Near Lazy L Ranch, Fickle Hill Rd. Comment
  HSC54537  Stachys rigida var. rigida Overton, Butler 1979-7-23 9494 Humboldt Near Titlow Hill, close to the town of Willow Creek. 1280 Comment
  UC668079  Stellaria borealis subsp. sitchana Joseph P. Tracy 1937-7-17 15443 Humboldt near Field's Landing (Still Ranch) 6 Comment
  HSC4279  Stellaria media Jack Rockwell 1962-4-5 30 Humboldt N bank of Van Duzen River, E of Hwy. 101 Comment
  UC1103547  Stellaria nitens Joseph P. Tracy 1918-5-1 4899 Humboldt Kneeland Prairie Northern Coast Ranges (Dan McBride place) 762 Comment
  UC204697  Stephanomeria elata Joseph P. Tracy 1918-7-7 5037 Humboldt Garberville Northern Coast Ranges 152 Comment
  HSC68958  Stipa lemmonii Jacqueline Greenleaf 1980-7-16 251 Humboldt Near Buck Mtn. 1250 Comment
  HSC73045  Stipa lemmonii M. A. Baker 1980-7-19 3004 Humboldt Near Bret Hole. 1814 Comment
  SEINET5585763  Stipa occidentalis Percy Train 1937-1 515 Humboldt Canyon Creek summit, east slope Santa Rosa Range 2195 Comment
  CAS-BOT-BC87611  Streptanthus tortuosus Henry M. Pollard 1946-9-2 s.n. Humboldt Orleans Mount Trail. 1524 Comment
  UC668050  Streptanthus tortuosus Joseph P. Tracy 1937-7-2 15399 Humboldt on ridge 2 mi e Grove's Prairie (rocky bank in open); Trinity Summit 1524 Comment
  UC552237  Streptanthus tortuosus var. orbiculatus Joseph P. Tracy 1933-7-16 12790 Humboldt along summit near Blake Lookout; Northern Coast Ranges, South Fork Mountain 1706 Comment
  JEPS54017  Streptanthus tortuosus var. suffrutescens Chesnut and Drew 1888-1 Humboldt Comment
  HSC32139  Streptopus amplexifolius D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5606 Humboldt Mt. Lassic and two smaller peaks to immediate E 1768 Comment
  HSC102070  Suksdorfia ranunculifolia M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 972 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  HSC48390  Swertia radiata Brad Klipfel 1973-6-10 114 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC23753  Symphoricarpos albus var. laevigatus Tim Baroni 1971-7-6 112 Humboldt 2 mi. S of Ferndale on Mattole Rd. Comment
  HSC40856  Symphoricarpos mollis Thomas W. Nelson 1976-7-9 2991 Humboldt Along ridge S of E peak of Mtn. Lassic group, (Signal Pk.). 1707 Comment
  HSC57900  Symphoricarpos mollis Gilbert Muth 1979-7-31 11487 Humboldt Near Tish Tang A Tang Creek, S Fork, close to the town of Gasquet 1417 Comment
  UC169063  Symphoricarpos mollis Mrs. M. H. Manning 1900-1 Humboldt Hupa Comment
  HSC39446  Symphyotrichum chilense Linda M. Barker 1976-8-2 1676 Humboldt Lanphere-Christensen Dunes; 3 mi. W of Arcata Comment
  CAS-BOT-BC99162  Symphyotrichum chilense Doris K. Kildale 1925-9-26 1365 Humboldt Mouth of Mad River Comment
  UC1222985  Symphyotrichum hendersonii Joseph P. Tracy 1950-8-7 19271 Humboldt Box Camp Trinity Summit 1463 Comment
  JEPS40830  Symphyotrichum subspicatum Milo S. Baker 1923-8-3 Humboldt roadside near Trinidad Comment
  UC223712  Symphyotrichum subspicatum Elmer I. Applegate 1923-9-13 3992 Humboldt Stone Lagoon, (along seashore, edge of redwoods) Comment
  UC198639  Symphytum asperum Joseph P. Tracy 1916-4-30 4679 Humboldt around Humboldt Bay (Salmon Creek near barnyard); Northern Coast Ranges, , Salmon Creek 30 Comment
  JEPS26264  Synthyris reniformis Joseph P. Tracy 1948-8-15 18116 Humboldt ne of Hawkins Bar; Trinity Summit Range, Happy Camp Mountain 1280 Comment
  CHSC68504  Synthyris reniformis var. cordata Vernon H. Oswald 1997-4-10 8331 Humboldt Elk Head, north end of Trinidad State Beach. 30 Comment
  UC1103481  Taeniatherum caput-medusae Joseph P. Tracy 1950-6-15 18772 Humboldt between Garberville and Harris 609 Comment
  HSC95076  Tanacetum bipinnatum Andrea Pickart 2002-7-2 144 Humboldt King Salmon Sand Spit 0 Comment
  CAS-BOT-BC376728  Tanacetum bipinnatum Peter H. Raven 1962-8-31 18078 Humboldt 1.2 miles south of Orrick [Orick] Comment
  HSC6243  Tanacetum bipinnatum H. E. Parks Sep 1941 24216 Humboldt Little River Comment
  RSA21034  Tanacetum camphoratum C. B. Wolf 1937-6-18 8903 Humboldt Centerville Beach 3 Comment
  CAS-BOT-BC85214  Taxus brevifolia Doris K. Kildale 1926-8-31 2601 Humboldt Union Mattole - Geo. 7 Niner Ranch, Mattole River Valley Comment
  HSC1597  Taxus brevifolia Francis Winter 1960-5-7 Humboldt Pine Ridge Summit, Hoopa Indian Reservation 671 Comment
  LA5974  Taxus brevifolia L. Miller; 1934-8-25 Humboldt Carlotta, Van Duzen River Comment
  UC1198263  Taxus brevifolia Joseph P. Tracy 1908-6 2925 Humboldt opposite Buck Mountain; Northern Coast Ranges, Valley of Van Duzen River 304 Comment
  HSC20426  Tellima grandiflora D. E. Anderson 1965-5-8 3629 Humboldt 0.6 mi. W of bridge over N Fork of the Mad River along Hwy. 299 Comment
  UC56716  Tellima grandiflora Harley P. Chandler May 1901 1232 Humboldt Humboldt Bay; North Coast Ranges 121 Comment
  UC668275  Thalictrum fendleri var. polycarpum Joseph P. Tracy 1937-5-30 15308 Humboldt along creek 3 mi n Blocksburg; Larrabee Creek 457 Comment
  CAS-BOT-BC399769  Thalictrum polycarpum Joseph P. Tracy 1933-5-20 12256 Humboldt Northern Coast Ranges. Mattole Valley 30 Comment
  UC534994  Thuja plicata H. E. Parks 1932-7-25 0 -1139 Humboldt Camp 21 Hammond Lumber Company Trinidad (Trinidad, in bogs) 152 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
  HSC98073  Tiarella trifoliata var. unifoliata Cara Witte 2007-7-12 526 Humboldt Forest Service Road 5N10C. Approximately 1 mile south for intersection with Ammon Ridge Road. 1252 Comment
  JEPS49705  Tiarella trifoliata var. unifoliata W. L. Jepson 1932-7-26 16417 Humboldt Bull Creek Comment
  UC1409074  Tiarella trifoliata var. unifoliata Robert F. Thorne and P. Everett 1965-8-5 35140 Humboldt below summit Mt. Chamisal Mt. Chamisal; , below summit 533 Comment
  UCR64482  Tiarella trifoliata var. unifoliata Lyman Benson 1928-7-11 454 Humboldt Dyerville, Bull Creek, S. Fork Eel River, Bull Creek Flat. 120 Comment
  UC275557  Tofieldia occidentalis subsp. occidentalis Joseph P. Tracy 1924-7-4 6709 Humboldt Snow Camp Northern Coast Ranges 1371 Comment
  UC302171  Tofieldia occidentalis subsp. occidentalis Joseph P. Tracy 1925-7-5 7181 Humboldt near High Prairie; Northern Coast Ranges, Bald Mountain 1066 Comment
  HSC56107  Tolmiea diplomenziesii G. L. Clifton 1979-7-31 11858 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  HSC70846  Tolmiea diplomenziesii M. A. Baker 1980-6-7 1827 Humboldt Near Ammon Creek 732 Comment
  UC136591  Tolmiea diplomenziesii Harley P. Chandler May 1901 1268 Humboldt Redwood Belt; North Coast Ranges 457 Comment
  HSC60125  Tolmiea diplomenziesii M. A. Baker 1978-5-20 556 Humboldt Hoopa Indian Reservation Comment
  CAS-BOT-BC447612  Tolmiea menziesii Eliz. Parsons Hawver 1915-6-1 s.n. Humboldt Carlotta Comment
  HSC74665  Tonella tenella Gail Newton 1981-6-6 2189 Humboldt Near Pilot Ridge Trail 1314 Comment
  HSC21588  Torilis arvensis P. W. Shields May 1955 Humboldt HSC campus Comment
  UCR3543  Torilis arvensis David Whistler, H. M. Whistler 1964-7-29 640729- 3 Humboldt North Coast Range, US 101, [South Fork Eel River] across the street from Myers Flat Store 63 Comment
  POM256868  Torilis arvensis Archie Cathey 1938-7-30 s.n. Humboldt At Cathey Ranch, Miranda 152 Comment
  JEPS14238  Torilis nodosa Joseph P. Tracy 1927-6-18 8183 Humboldt near Petrolia (Hills between Petolia and Ocean) 152 Comment
  UC249611  Torilis nodosa Joseph P. Tracy 1922-6-18 6092 Humboldt North Yager Creek 762 Comment
  HSC40005  Toxicodendron diversilobum Linda M. Barker 1976-9-3 1697 Humboldt Lanphere-Christensen Dunes, 3 mi. W of Arcata. Comment
  SEINET10953093 Image available Tracyina rostrata Joseph P. Tracy 1916-6-20 Tracy 4735 Humboldt Alder Point, on warm grassy slopes. 305 Comment
  CAS-BOT-BC517424  Triantha occidentalis subsp. occidentalis Volney Rattan 1867-6-1 s.n. Humboldt Red Mountain Comment
  SEINET8999606 Image available Trichostema lanceolatum Unknown 1934-8-19 13595 Humboldt TRINITY RIVER VALLEY, at Willow Creek 152 Comment
  JEPS63108  Trichostema lanceolatum Milo S. Baker 1923-8-25 332 Humboldt highway near Garberville; North Coast Comment
  RSA69006  Trientalis latifolia F. W. Peirson 1923-7-9 s.n. Humboldt first summit on road between coast and Eel River Comment
  UC177169  Trientalis latifolia Joseph P. Tracy 1913-6-25 4341 Humboldt opposite Buck Mountain (in Valley of Van Duzen River, Dinsmore's Ranch); Northern Coast Ranges, Dinsmore's Ranch 762 Comment
  UC160914  Trifolium albopurpureum var. dichotomum Joseph P. Tracy 1908-6-9 2652 Humboldt Kneeland Prairie North Coast Ranges 762 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
  UC1223375  Trifolium arvense Joseph P. Tracy 1941-7-26 16970 Humboldt near 9th (G Street); Eureka Comment
  POM160892  Trifolium bifidum Joseph P. Tracy 1922-4-30 5992 Humboldt Trinity River Valley, near Willow Creek. 152 Comment
  UC1197059  Trifolium bifidum var. decipiens Joseph P. Tracy 1925-8-9 7226 Humboldt near Miranda (Salmon Creek); Northern Coast Ranges 91 Comment
  UC1197182  Trifolium bifidum var. decipiens Joseph P. Tracy 1906-7-4 2522 Humboldt near Hydesville (Yager Creek); Northern Coast Ranges 60 Comment
  UC1197050  Trifolium campestre Joseph P. Tracy 1905-7-1 2203 Humboldt immediate vicinity Eureka 0 Comment
  UC1541600  Trifolium ciliolatum Harold E. Parks May 1923 1497 Humboldt Eel River, McCanns Comment
  HSC97623  Trifolium cyathiferum Cara Witte 2007-6-4 195 Humboldt Cold Spring. 0.5 mile S of Titlow Hill. 1386 Comment
  UC1197495  Trifolium cyathiferum Joseph P. Tracy 1933-7-15 12735 1/2 Humboldt lower foothills of nw slope; Buck Mtn Comment
  UC1223483  Trifolium cyathiferum Joseph P. Tracy 1937-7-19 15458 Humboldt lower foothills northwest slope; Buck Mtn Comment
  HSC45106  Trifolium dubium R. Sutherland 1978-5-16 6 .16578 Humboldt 157 Comment
  HSC77333  Trifolium dubium L. P. Janeway 1983-4-30 239 Humboldt 21 Comment
  UCD108882  Trifolium dubium W. A. Williams 1951-6-14 s.n. Humboldt 3 miles E of Hydesville, Bech Ranch swale. Comment
  UC495735  Trifolium fucatum Joseph P. Tracy 1927-5-8 7992 Humboldt vicinity Garberville; Northern Coast Ranges 121 Comment
  HSC79552  Trifolium fucatum Kenneth Clark 1980-4-18 573 Humboldt 350 yards SE of Dead Man's Gulch (Point No Pass) 8 Comment
  UC1223455  Trifolium fucatum Joseph P. Tracy 1950-6-8 18747 Humboldt 1 mi e Cape Mendocino; Cape Ridge 152 Comment
  UCD109057  Trifolium fucatum W. A. Williams 1951-6-1 s.n. Humboldt Humboldt County. Comment
  HSC38085  Trifolium gracilentum Thomas W. Nelson, James Nelson 1976-5-30 2606 Humboldt McKeown Ranch, N of Dinsmore. Comment
  UCD111202  Trifolium hirtum A. H. Murphy 1947-8-19 s.n. Humboldt Fairground exper. Area, Fortuna. Comment
  POM214885  Trifolium macraei Joseph P. Tracy 1927-6-8 8114 Humboldt Trinidad. 15 Comment
  HSC15218  Trifolium macraei J. W. Johnson 1961-5-27 1386 Humboldt Arcata, Christenson Farm on the Samoa Peninsula Comment
  UC495697  Trifolium microdon Joseph P. Tracy 1927-6-18 8184 Humboldt between Petriola and the ocean hills; Northern Coast Ranges 152 Comment
  UC162783  Trifolium pratense J. P. Tracy 1909-6-6 2987 Humboldt immediate vicinity Eureka 0 Comment
  UCD109372  Trifolium repens Tofsrud 1948-9-1 s.n. Humboldt 3 mi. S. of Scotia. Comment
  HSC84044  Trifolium subterraneum L. P. Janeway 1983-4-30 240 Humboldt 21 Comment
  UC16781  Trifolium variegatum var. melananthum Joseph Burtt Davy and Walter C. Blasdale 1899-6-8 5342 Humboldt Harris Comment
  UC1197564  Trifolium variegatum var. melananthum Joseph P. Tracy 1915-6-6 4643 Humboldt Steven Hill place Northern Coast Region (Eureka) 0 Comment
  UC1197513  Trifolium willdenovii Joseph P. Tracy 1927-5-15 8037 Humboldt near South Fork; Northern Coast Ranges, Trinity River Valley 182 Comment
  UC1197535  Trifolium willdenovii J. P. Tracy 1901-4-24 1038 Humboldt Eureka vicinity 0 Comment
  HSC46954  Trifolium wormskioldii J. P. Smith, T. Nelson 1977-6-30 9207 Humboldt Samoa Peninsula just E of the drag strip. Comment
  UC162835  Trifolium wormskioldii J. P. Tracy 1900-5-24 802 Humboldt Eureka vicinity Comment
  HSC103300  Trillium albidum Michael G. Simpson, Michael Mesler, Michael Mayer 2008-5-27 3006 Humboldt Six Rivers National Forest; ~ 0.2 mi. south-southeast of Cold Spring Camp; ~ 3.3 aerial mi. south-southeast of Horse Mtn. Radio Tower. 1416 Comment
  RSA46966  Trillium albidum E. N. Crosby 1935-3-10 66 Humboldt Blue Lake Comment
  RSA21190  Trillium albidum Carl B. Wolf 1937-8-11 9149 Humboldt N Coast Range, Van Duzen River, 2.7 miles W of Dinsmores. 457 Comment
  HSC28002  Trillium kurabayashii Maralyn O'Meara 1972-5-29 77 Humboldt 18.6 mi. up Bald hills Rd. from junction with Hwy. 101 near Orick 915 Comment
  CAS-BOT-BC133390  Trillium ovatum Alice Eastwood 1939-3-19 18899 Humboldt Bolling Grove Comment
  HSC15699  Trillium ovatum D. E. Anderson 1962-2-23 1923 Humboldt Grove E of HSC campus Comment
  HSC48743  Trillium ovatum Brad Klipfel 1973-6-10 68 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  CAS-BOT-BC521318  Trillium rivale L. R. Abrams 1918-6-15 7127 Humboldt Brannan Mt near Willow Creek 1371 Comment
  CHSC118618  Triphysaria eriantha subsp. eriantha Richard R. Halse 2016-3-24 9683 Humboldt Along U.S. Hwy. 101 ca. 9.5 miles south of Garberville, just north fo the Mendocino County Line. 168 Comment
  JEPS10700  Triphysaria eriantha subsp. eriantha Joseph P. Tracy 1932-5-1 9888 Humboldt vicinity Garberville 121 Comment
  CDA41904  Triphysaria pusilla April A. Allard & Gregory D. O Connell 2005-6-1 8 Humboldt Coldspring Camp, 7.4 miles south of Hwy. 299 on NF1. Comment
  UC902259  Triphysaria pusilla Joseph P. Tracy 1948-5-15 17974 Humboldt Trinity River Valley at Willow Creek; Trinity River Valley, at Willow Creek 152 Comment
  CAS-BOT-BC199623  Trisetum canescens H. E. Parks; Joseph P. Tracy 1934-6-27 11074 Humboldt Grouse Mt. 1432 Comment
  HSC99524  Trisetum canescens K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-22 187 Humboldt Near North Trinity Mtn, 11. 5 mi. E of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  UC1541569  Trisetum canescens Harold E. Parks Jun 1934 1987 Humboldt Spruce Cove; Trinidad Comment
  UC526695  Trisetum canescens Joseph P. Tracy 1927-6-19 8194 Humboldt Big Lagoon; Northern Coast Region 6 Comment
  UCD93602  Trisetum canescens P. B. Kennedy 1923-8-2 s.n. Humboldt Bluff Creek to Arcata. Comment
  UCD93603  Trisetum canescens P. B. Kennedy 1923-8-3 s.n. Humboldt Bluff Creek to Orrick. Comment
  UC922031  Trisetum cernuum Joseph P. Tracy 1939-4-25 16223 Humboldt Bull Creek 60 Comment
  RSA183507  Triteleia hyacinthina D. E. Anderson 1965-5-15 3698 Humboldt About 5 miles N of Hoopa on Bald Hills Road. Comment
  CAS-BOT-BC519144  Triteleia hyacinthina Doris K. Kildale 1925-6-28 793 Humboldt Kneeland Prairie, Bald Hills 762 Comment
  HSC44872  Triteleia hyacinthina J. P. Smith, J. O. Sawyer 1973-5-12 6664 Humboldt 1.0 mi. from Redwood Creek on Hoopa Rd. Comment
  UC1197709  Triteleia hyacinthina Joseph P. Tracy 1927-7-4 8239 Humboldt Lone Star Creek Iaqua Region, Lone Star Creek 609 Comment
  HSC3059  Triteleia laxa Lincoln Constance 1934-5-29 710 Humboldt Upper Look Prairie; South Fork Eel River 366 Comment
  RSA167426  Triteleia laxa Joseph P. Tracy 1950-6-8 18755 Humboldt At Davis Creek Mouth, south of Cape Mendocino Comment
  RSA378052  Triteleia laxa Hutchinson 1927-05 s.n. Humboldt [No locality information provided] Comment
  UC1197716  Triteleia laxa Joseph P. Tracy 1942-6-15 17168 Humboldt 5 mi n Garberville 152 Comment
  POM169620  Triteleia peduncularis Joseph P. Tracy 1903-6-12 1920 Humboldt Immediate vicinity of Eureka. 0 Comment
  HSC95905  Tsuga heterophylla Will Ferrand 2001-6-17 6 Humboldt 9 mi. E of intersection of West End Rd. and Warren Creek Rd. 67 Comment
  OBI33131  Tsuga heterophylla David J. Keil 1983-7-2 17305 Humboldt Freeway exit from US 101 at Patrick's Point Comment
  SEINET12104679  Umbellularia californica E. A. York 1990-1-10 2667 Humboldt USGS Redwood Field Station, Arcata 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
  HSC21678  Urtica dioica subsp. gracilis Francis Winter 1960-4-19 Humboldt Samoa peninsula 5 miles W of Arcata. Comment
  HSC69782  Urtica dioica subsp. gracilis R. Kalal 1979-5-20 62 Humboldt Logging road E of HSU campus, along Jolly Giant Creek. 61 Comment
  HSC15307  Utricularia macrorhiza W. B. Strickland 1968-3-28 Humboldt McClellan Mtn. Rd., off Hwy. 36 above Bridgeville 457 Comment
  UC562347  Vaccinium cespitosum Joseph P. Tracy 1933-7-16 12792 Humboldt near Blake Lookout; Northern Coast Ranges, South Fork Mountain 1737 Comment
  UCD118069  Vaccinium membranaceum Joseph P. Tracy 1942-6-23 17243 Humboldt Trinity Summit, near Box Camp. 1524 Comment
  CAS-BOT-BC199304  Vaccinium ovatum Doris K. Kildale 1927-3-25 3008 Humboldt Humboldt Hill near Bucksport School House 15 Comment
  CAS-BOT-BC199307  Vaccinium ovatum Volney Rattan 1879-1-1 s.n. Humboldt Unspecified Comment
  CAS-BOT-BC199309  Vaccinium ovatum L. R. Abrams 1916-7-11 5992 Humboldt Between Balocksberg [Blocksburg] and Bridgeville Comment
  HSC40255  Vaccinium ovatum Linda M. Barker 1976-4-30 1423 Humboldt 3 mi. W of Arcata Comment
  HSC7906  Vaccinium ovatum J. W. Johnson 1962-3-25 1418 Humboldt Arcata, along section line, Christenson Farm, Samoa Peninsula Comment
  HSC7908  Vaccinium ovatum J. Pursell 1964-10-17 10178 Humboldt Road to Box Camp in Hoopa Valley 762 Comment
  HSC31220  Vaccinium parvifolium D. E. Anderson 1972-6-20 5729 Humboldt Along the Redwood Valley-Hoopa Rd., E of the summit. Comment
  RSA471156  Vaccinium parvifolium Anonymous 1924-7-10 s.n. Humboldt Arcata. Comment
  HSC100480  Vaccinium parvifolium Carl C. Marshall May 1886 217 Humboldt Woods, Humboldt Bay. Comment
  HSC56072  Valeriana sitchensis subsp. sitchensis G. L. Clifton, Griswold 1979-7-31 11741 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa. 1845 Comment
  HSC31199  Vancouveria planipetala D. E. Anderson 1972-6-20 5746 Humboldt Along the Redwood Valley-Hoopa Rd., E of the summit. Comment
  HSC44512  Vancouveria planipetala Brad Klipfel 1973-7-1 122 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  UC9791 Image available Vancouveria planipetala Harley P. Chandler May, 1901 1162 Humboldt Humboldt Bay; North Coast Ranges, Humboldt Bay 30 Comment
  HSC38742  Vancouveria planipetala J. D. Ackerman 1975-6-18 468 Humboldt Big Hill Rd., 7.9 mi. E of Hoopa and Hwy. 96 Comment
  UC146078  Vancouveria planipetala Joseph P. Tracy 1908-6-23 2678 Humboldt near Grizzly Gulch; Northern Coast Ranges, near Grizzly Gulch 152 Comment
  JEPS51168  Velezia rigida W. L. Jepson 1902-7-25 2120 Humboldt Hupa Valley Supply Creek (Supply Creek); , Supply Creek Comment
  CDA39365  Veratrum californicum T. C. Fuller 1958-6-17 1713 Humboldt Mazepa Ranch, Wildcat Ridge. 0 Comment
  JEPS80003  Veratrum insolitum Joseph P. Tracy 1929-7-4 8636 Humboldt French Camp Ridge 1066 Comment
  HSC21737  Verbena lasiostachys D. E. Anderson 1963-10-6 2880 Humboldt Mad River bed, across from Essex Junction. Comment
  UC154022  Verbena lasiostachys var. lasiostachys Joseph P. Tracy 1908-6 2775 Humboldt opposite Buck Mt; Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  HSC23492  Veronica americana R. A. Vanbianchi 1971-9-10 83 Humboldt Along Fieldbrook Rd., 0.7 mi. from junction with old Hwy. 299 Comment
  HSC56222  Veronica americana G. L. Clifton, Terry Griswold 1979-8-2 12254 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  UC1198066  Veronica arvensis J. P. Tracy 1910-5-1 3131 Humboldt immediate vicinity of Eureka 0 Comment
  UC27733  Veronica peregrina subsp. xalapensis C. C. Marshall 1888-1 Humboldt Eel River Region Comment
  HSC28231  Veronica scutellata John R. Keith 1973-5-15 Humboldt Abandoned log pond about 200 yds. E of junction of Guintoli Ln. and West End Rd. Comment
  HSC72498  Veronica serpyllifolia subsp. humifusa J. P. Smith, Steve Selva 1970-6-30 4135 Humboldt Comment
  HSC73728  Veronica wormskjoldii M. A. Baker 1980-7-22 3098 Humboldt Near Grogan Hole. 1676 Comment
  HSC56355  Vicia americana var. americana Griswold, Butler 1979-7-10 6327 Humboldt Near Board Camp Mtn., close to the town of Willow Creek 1372 Comment
  UCD108778  Vicia benghalensis Rimo Bacigalupi; L. Heckard, J. Weiler 1961-6-23 7838 Humboldt About 1 mile west of Carlotta (or about 1/2 mile east of Hydesville). Comment
  BLMAR723  Vicia gigantea Jennifer Wheeler 2014-4-20 723 Humboldt South Spit/Mike Thompson Wildlife Area, South Jetty Rd on Table Bluff cliff face 3 Comment
  HSC100118  Vicia sativa David Adams 1960-7-15 Humboldt Near Fort Humboldt monument, Eureka 15 Comment
  HSC15254  Vicia sativa subsp. nigra D. B. Bader 1963-5-1 34 Humboldt Second of Clam Beach Lagoons, W of Hwy. 101, along R.R. tracks Comment
  SBBG52994  Vicia sativa subsp. nigra J. D. Hobson -Jul-1966 Humboldt beach and cliff at S end of sand spit forming Eureka Harbor, 10 mi S of Eureka Comment
  UC162799  Vicia sativa subsp. nigra J. P. Tracy 1901-6-30 1202 Humboldt immediate vicinity Eureka 0 Comment
  HSC38483  Vicia sativa subsp. nigra D. E. Anderson, J. P. Smith 1971-6-18 - 1063 Humboldt Chezem Rd., about 3 mi. E of bridge over Redwood Creek Comment
  HSC95677  Vicia sativa subsp. nigra Steven Lee 2004-4-11 15 Humboldt Scenic Dr., about 1 mi. N of Westhaven Exit off Hwy. 101, 1 from Houda Point. Comment
  UC169306  Vicia tetrasperma Joseph P. Tracy 1912-7-7 3739 Humboldt Eureka; Northern Coast Region 0 Comment
  UCD108797  Vicia tetrasperma Barbara Ertter; Thomas J. Delendick 1987-5-16 6912 Humboldt Hwy 299 roadside ca. 8 mi E of Arcata, 9 1/2 mi W of Lord Ellis summit. Comment
  BLMAR258  Viola adunca Jennifer Anthony-Wheeler 1998-4-22 258 Humboldt King range, strawberry rock grazing allotment 280 Comment
  HSC45582  Viola cuneata Diane L. Reed 1978-5-27 124 Humboldt Horse Mtn., Titlow Hill Rd., 3.4 mi. from junction with S.R. 299 Comment
  UCR45416  Viola glabella N. Meiselman, M. Bransom, D. Brown, R. Hildebrant 1986-4-19 35 Humboldt North Coast Range, Horse Mountain, 0.5 mi. down Titlow Road from Ski Area 1372 Comment
  CAS-BOT-BC536498  Viola glabella Alice Eastwood 1907-4-21 26 Humboldt Trinidad Comment
  HSC26335  Viola glabella Thomas W. Nelson 1971-3-30 363 Humboldt Beside Howe Creek Comment
  RSA24186  Viola glabella Carl B. Wolf 1941-3-1 9980 Humboldt 0.2 mi NE of Strongs Station (on the Van Duzen River) on rd to Yaeger. 61 Comment
  HSC32079  Viola hallii D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5593 Humboldt Mt. Lassic and two smaller peaks to immediate E 1768 Comment
  UC1103555  Viola macloskeyi Joseph P. Tracy 1939-7-9 16345 Humboldt Snow Camp 1402 Comment
  CHSC24856  Viola ocellata A. D. Launer 1976-4-9 1 Humboldt N roadbank of Church St., ca. 100 yds e of Blocksburg. 472 Comment
  UCD110697  Viola ocellata R. N. Raynor 1935-4-15 s.n. Humboldt Fort Seward. Comment
  HSC90167  Viola praemorsa subsp. praemorsa Andrew Enberg, Brad Penkala, Dan Scofield 1990-4-27 61 Humboldt Titlow Hill Rd., 0.5 mi. S of its intersection with Hwy. 299 854 Comment
  UC164820  Viola praemorsa subsp. praemorsa Joseph P. Tracy 1908-6-9 2667 Humboldt Kneeland Prairie; Northern Coast Ranges, Kneeland Prairie 762 Comment
  UC1761529  Viola praemorsa subsp. praemorsa Milo S. Baker 1923-7-20 33 Humboldt near the head of the South Fork of the Yager Comment
  HSC98758  Viola purpurea subsp. purpurea Cara Witte 2008-7-2 818 Humboldt Board Camp Mountain/ Tri Board Camp. Forest Service Road 4N38. 1577 Comment
  UC1761996  Viola sempervirens Joseph P. Tracy 1913-5-4 4054 Humboldt Kneeland Prarie North Coast Ranges 762 Comment
  HSC32889  Viola sheltonii Thomas W. Nelson 1973-5-30 975 Humboldt Humboldt/Trinity Co. line, Mt. Lassic 1790 Comment
  CAS-BOT-BC203052  Vitis californica L. B. Kildale 1930-6-1 9754 Humboldt Klamath River at Bluff Creek Comment
  UC668146  Vitis californica Joseph P. Tracy 1933-9-9 13077 Humboldt Garberville South Fork of Eel River 152 Comment
  POM92419  Vitis californica L. R. Abrams 1922-6-25 8220 Humboldt 6 miles N of Garberville Comment
  CAS-BOT-BC198761  Vulpia bromoides Harley P. Chandler 1901-5-1 1119 Humboldt Humboldt Bay 30 Comment
  HSC9825  Vulpia bromoides E. W. Styskel 1964-4-3 57 Humboldt 0.25 mi. S of Garberville along Sprowl Creek Rd. Comment
  RSA152486  Vulpia microstachys var. pauciflora Joseph P. Tracy 1936-7-5 15039 Humboldt Grouse Mountain. 1524 Comment
  HSC39399  Vulpia myuros D. E. Anderson, J. P. Smith 1971-6-28 - 1253 Humboldt 2.5 mi. S of Blue Lake along the Mad River Comment
  SEINET244937 Image available Vulpia myuros var. myuros J. P. Tracy 1914-1 4432 Humboldt Fort Seward. 122 Comment
  JEPS49626  Whipplea modesta W. L. Jepson 1932-7-26 16400 Humboldt Bull Creek Comment
  CAS-BOT-BC382922  Wyethia angustifolia Volney Rattan 1879-1-1 s.n. Humboldt Unspecified Comment
  HSC100451  Wyethia angustifolia Carl C. Marshall Jul 1886 261 Humboldt Coast Range. Comment
  JEPS13755  Wyethia longicaulis Frank W. Gould 1939-5-29 841 Humboldt Horse Mountain 914 Comment
  POM192569  Wyethia longicaulis H. E. Parks 1930-05 0740 Humboldt Laribee Valley Comment
  HSC62873  Zeltnera davyi J. M. DiTomaso 1979-5-20 1045 Humboldt McKinleyville, middle divider on Hwy. 101 at Murray Rd. Comment
  HSC31209  Zigadenus micranthus D. E. Anderson 1972-6-20 5741 Humboldt Along the Redwood Valley-Hoopa Rd., E of the summit. Comment
  UC398875  Zostera marina H. E. Parks 1923-11-12 Humboldt Eureka 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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