Search Results — 2000 specimen records retrieved (1381 records with coordinates)
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Results for search: County=HUMBOLDT; Source=All;   

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

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

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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  RSA46784  Abies Doris K. Kildale 1937-8-12 15241 Humboldt South Fork Mountain. Comment
  HSC54516  Abies concolor Overton, Butler 1979-7-23 9432 Humboldt Near Horse Mtn., close to the town of Willow Creek 1478 Comment
  HSC72810  Abies concolor M. A. Baker 1980-6-28 2495 Humboldt Near Mad River Buttes 1445 Comment
  CAS-BOT-BC78059  Abies grandis Doris K. Kildale 1927-5-13 3128 Humboldt Green Point, Redwood Creek road Comment
  HSC89414  Abies grandis P. A. Daly 1986-3-12 92 Humboldt Trinidad Head, along trail 61 Comment
  CHSC55899  Abronia latifolia L. P. Janeway 1987-7-31 2542 Humboldt Vicinity of Eureka; North spit of Humboldt Bay near the SE corner of Eureka City Airport. 3 Comment
  RSA0025087  Abronia latifolia Lyman Benson 1928-7-10 449 Humboldt Clam Beach, Trinidad. 9 Comment
  UC1360498  Acaena novae-zelandiae D. W. Cooper 1967-6-30 Humboldt On ridge just southeast of Forest Service Nursery, ca. 2 miles southeast of Crannell and ca. 4 miles east of U.S. Hwy. 101. Comment
  CAS-BOT-BC436986  Acaena novae-zelandiae D. W. Cooper 1967-6-30 s.n. Humboldt On ridge just southeast of Forest Service Nursery, ca. 2 miles southeast of Crannell and ca. 4 miles east of U.S. Highway 101 Comment
  SEINET7892760  Acer circinatum W. D. Billings 1940-6-25 1349 Humboldt Cedar Creek, 35 miles east of Arcata Comment
  UC1175129  Acer macrophyllum P. C. Everett and E. K. Balls 1959-10-25 23957 Humboldt 12 mi w from Willow Creek (along U.S. Hwy 299 to Arcata); w from Willow Creek 701 Comment
  UC165822  Acer macrophyllum Joseph P. Tracy 1911-7-9 3461 Humboldt along Willow Creek Northern Coast Ranges, Trib of Trinity River, Willow Cr ((Tributary of Trinity River), near its mouth) 152 Comment
  HSC57890  Achillea millefolium Overton, Butler 1979-7-31 11450 Humboldt Near Water Dog Lakes, close to the town of Hoopa 1830 Comment
  HSC58099  Achillea millefolium G. L. Clifton, Griswold 1979-8-1 12027 Humboldt Near N Trinity Mtn., close to the town of Hoopa 1799 Comment
  UC1125414  Achillea millefolium H. L. Person 1932-7-16 9 Humboldt highway n Trinidad; Rock Point Quad. Comment
  UC1222918  Achillea millefolium Joseph P. Tracy 1941-8-24 17044 Humboldt near, McKay Camp; South Fork Mountain 1676 Comment
  HSC89501  Achillea millefolium M. Roantree 1985-6-10 80 Humboldt East side of Trinidad Head Comment
  JEPS36906  Achillea millefolium W. L. Jepson 1902-6 1968 Humboldt Redwood Creek; Ukiah, Hupa Indian Reservation Comment
  UC1103143  Achnatherum lemmonii Joseph P. Tracy 1912-7-31 3942 Humboldt Buck Mountain, near summit Northern Coast Ranges, Buck Mountain 1676 Comment
  CAS-BOT-BC216454  Achnatherum occidentale subsp. californicum H. E. Parks; Joseph P. Tracy 1934-6-27 11078 Humboldt Grouse Mountain 1432 Comment
  UC212861  Achnatherum occidentale subsp. californicum Joseph P. Tracy 1919-9-23 5285 Humboldt summit of ridge Northern Coast Ranges, Trinity Summit 1828 Comment
  UCD103770  Acmispon americanus var. americanus Linda M. Barker 1976-6-1 1548 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  HSC45024  Acmispon micranthus R. Sutherland 1978-4-23 18 .23478 Humboldt Near head of Kinsey (Fraser) Ridge 732 Comment
  HSC45644  Acmispon micranthus Diane L. Reed 1978-5-7 53 Humboldt Friday Ridge Road, near intersection with Hwy. 299 Comment
  UCD104287  Acmispon parviflorus Linda M. Barker 1976-4-30 1410 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  HSC102039  Aconitum columbianum M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-13 942 Humboldt Rustic Camp, northwest of Patterson Meadows 1512 Comment
  RSA168919  Aconitum columbianum Joseph P. Tracy 1950-7-31 19242 Humboldt NE side of top of Grouse Mtn Comment
  HSC48684  Aconitum columbianum subsp. columbianum Brad Klipfel 1973-7-31 238 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 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
  HSC101545  Actaea rubra J. P. Smith, J. O. Sawyer 2009-8-11 12653 Humboldt Green Diamond Resource land along State Route 299. 762 Comment
  UC164803  Adenocaulon bicolor Joseph P. Tracy 1909-7-31 3042 Humboldt Kneeland Prairie; Northern Coast Ranges, Kneeland Prarie 762 Comment
  UC249778 Image available Adiantum X tracyi Joseph P. Tracy 1924-9-16 6868 Humboldt <collector's garden> Eureka; Northern Coast Ranges 30 Comment
  CAS-BOT-BC62292  Adiantum aleuticum L. B. Kildale 1930-6-1 9745 Humboldt Klamath River at Weitchpec Comment
  HSC98752  Adiantum aleuticum Cara Witte 2007-7-12 514 Humboldt Forest Service Road 5N10. 2 miles east of intersection with National Forest 1. 1339 Comment
  UC197917  Adiantum aleuticum Joseph P. Tracy 1907-8-20 2604 Humboldt Hydesville; Northern Coast Region 30 Comment
  UCD137172  Adiantum aleuticum K. Esau 1934-5-8 s.n. Humboldt Redwood Highway, So. of Scotia. Comment
  UCD137190  Adiantum jordanii K. Esau 1934-5-8 s.n. Humboldt Above Fort Seward. 457 Comment
  UC165015  Ageratina occidentalis Joseph P. Tracy 1911-7-10 3557 Humboldt along Willow Creek ((tributary of Trinity River, Humboldt County), near its mouth); Northern Coast Ranges, Willow Creek 304 Comment
  UC205185  Agoseris aurantiaca var. aurantiaca Joseph P. Tracy 1919-9-23 5284 Humboldt Trinity Summit Northern Coast Ranges, Trinity Summit 1828 Comment
  UC1222934  Agoseris grandiflora var. grandiflora Joseph P. Tracy 1942-6-15 17146 Humboldt n end Garberville Comment
  CAS-BOT-BC15343  Agoseris heterophylla Alice Eastwood; John Thomas Howell 1937-6-23 4810 Humboldt Little Van Duzen River Comment
  UC1199486  Agoseris heterophylla var. heterophylla Joseph P. Tracy 1938-6-9 15888 Humboldt top of ridge 3 mi w of Harris 914 Comment
  POM126129  Agoseris hirsuta Joseph P. Tracy 1923-6-18 6283 Humboldt Bear Ridge Ridge 305 Comment
  HSC8829  Agrostis capillaris D. J. Wilder 1965-5-9 32 Humboldt Arcata, 151 G st. Comment
  UCD51876  Agrostis capillaris var. aristata A. H. Murphy 1947-6-20 s.n. Humboldt Tooby and Prior Ranch, near Blocksburg. Comment
  HSC39906  Agrostis exarata J. P. Smith, Steve Selva 1970-6-30 4129 Humboldt Comment
  RSA10022  Agrostis exarata Joseph P. Tracy 1924-7-13 6731 Humboldt Big Lagoon 6 Comment
  UC1145062  Agrostis exarata Joseph P. Tracy 1936-6-10 14917 Humboldt Willow Creek Trinity River Valley 152 Comment
  UC34115  Agrostis exarata Joseph Burtt Davy and Walter C. Blasdale 1899-5 6216 Humboldt Eureka Comment
  UCD52494  Agrostis exarata Joseph P. Tracy 1935-7-21 14111 Humboldt Trinity River Valley, at Willow Creek. 152 Comment
  CAS-BOT-BC139494  Agrostis hallii Doris K. Kildale 1927-6-25 3545 Humboldt Shelter Cove. Comment
  SEINET201012  Agrostis hallii Joesph P Tracy 1908-7-30 2882 Humboldt Van Duzen River opposite buck mountain Comment
  UC187117  Agrostis hallii Joseph P. Tracy 1908-6 2882 Humboldt opposite Buck Mountain; Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  UCD52704  Agrostis hallii Ray Evans 1956-7-19 s.n. Humboldt Bear River Ridge, 9 miles west of Ferndale. Comment
  UC1145152  Agrostis microphylla Joseph P. Tracy 1938-7-5 16006 Humboldt 5 mi e town (Carlotta, open flat by old Strong's District School House); Carlotta, old Strong's District School House 60 Comment
  SEINET3127763  Agrostis pallens J. B. Davy 1899-6-13 5521 Humboldt Near Pepperwood Comment
  UC526883  Agrostis pallens Joseph P. Tracy 1932-7-17 10661 Humboldt Corral Prairie Klamath Mountains, Trinity Summit 1524 Comment
  SACT000138  Agrostis palustris S. Smith, Malcolm Nobs 1949-8-3 Humboldt Borders of irrigation ditch Comment
  UC186908  Agrostis scabra J. P. Tracy 1901-6-30 1205 Humboldt immediate vicinity Eureka 0 Comment
  HSC8855  Aira caryophyllea N. R. Waite 1965-5-19 41 Humboldt W edge of Humboldt State University campus. Comment
  HSC96238  Aira caryophyllea Sara March, Gillian Levy 2005-6-8 3 Humboldt 1.4 mi S of Hwy. 299 on Titlow Hill Rd. 980 Comment
  UC37074  Aira caryophyllea Harley P. Chandler May, 1901 Humboldt Humboldt Bay North Coast Ranges 30 Comment
  CAS-BOT-BC138326  Aira caryophyllea var. caryophyllea H. E. Parks; S. T. Parks 1936-6-1 5850 Humboldt Spruce Cove, Trinidad. Comment
  CAS-BOT-BC460751  Allium amplectens S. K. Harris; J. P. Tracy; H. S. Yates 1936-6-17 3401 Humboldt Crossing of Little Van Duzen River between Bridgeville and Dinsmore's. 710 Comment
  HSC76439  Allium bolanderi var. bolanderi Denis Kearns 1981-6-24 8 Humboldt Near Cedar Camp 1219 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
  HSC74606  Allium campanulatum M. A. Baker 1980-7-11 2798 Humboldt Near Red Mtn. 1341 Comment
  UC146210  Allium campanulatum Joseph P. Tracy 1908-6 2836 Humboldt nw slope of Buck Mountain Northern Coast Ranges, Buck Mountain 914 Comment
  HSC67187  Allium hoffmanii Thomas W. Nelson, James Nelson 1980-6-10 5423 Humboldt Along NE side of Red Mtn. 1433 Comment
  HSC12536  Allium membranaceum J. Allen DeCou 1899-6-22 263 Humboldt Trail to Trinity Summit Comment
  UC666924  Allium unifolium Joseph P. Tracy 1928-5-20 8437 Humboldt Bear River Ridge Northern Coast Ranges, Bear River Ridge 609 Comment
  CAS-BOT-BC476604  Allium unifolium Mrytle Paulson 1918-4-28 s.n. Humboldt Eureka Comment
  RSA75603  Allium unifolium Albert M. Vollmer, L. Beane 1951-6-11 138 Humboldt Horse Mountain-Shelter Cove Road. Comment
  UCD138614  Allium unifolium K. Esau 1934-5-7 s.n. Humboldt Above Fort Seward. 457 Comment
  HSC97998  Allium validum Cara Witte 2007-7-11 500 Humboldt Grouse Mountain. Forest Service Road 5N04. Near spring. 1583 Comment
  UC666889  Allium validum Joseph P. Tracy 1932-7-13 10515 Humboldt Corral Prairie Trinity Summit, Corral Prairie 1584 Comment
  RSA249506  Allotropa virgata R. F. Thorne, P. C. Everett, K. Thorne 1965-8-5 35132 b Humboldt Wailaki Recreation Site. 610 Comment
  SACT002769  Alnus oregona J. Clark 1972-4-22 Humboldt 26 miles north of Eureka on Highway 101. Roadwood Forest. Comment
  UC275561  Alnus rhombifolia Joseph P. Tracy 1923-10-14 6575 Humboldt North Dobbyn Creek Northern Coast Ranges 152 Comment
  RSA24390  Alnus rubra C. B. Wolf 1941-2-22 9917 Humboldt Along Redwood Highway 2.8 miles south of Patricks Point State Park 30 Comment
  RSA2929  Alnus rubra C. B. Wolf 1931-8-28 2366 Humboldt Redwood Highway 4.5 miles no. of Fortuna on road to Eureka. 15 Comment
  SBBG28459  Alnus rubra H. E. and S. T. Parks 1938-4-1 24126 Humboldt Spruce Cove, Trinidad 60 Comment
  HSC101973  Alnus viridis subsp. sinuata M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-12 870 Humboldt Patterson Meadows 1566 Comment
  HSC58068  Alnus viridis subsp. sinuata G. L. Clifton, Griswold 1979-8-1 11950 Humboldt Near Mill Creek Lakes, close to the town of Hoopa. 1692 Comment
  HSC90772  Alopecurus geniculatus Gail Newton 1982-6-5 3588 Humboldt Elk River Wildlife Area, Eureka Comment
  UC1152033  Alopecurus geniculatus Joseph P. Tracy 1951-6-21 19524 Humboldt back of Everett Beck house (formerly Geroge Fray), bed of former Goose Lake Hydesville Comment
  SEINET11674220  Alopecurus geniculatus J. P. Tracy 1951-1 19524 Humboldt back of Everett Beck house (formerly George Fray) bed of former Goose Lake, Hydesville Comment
  CAS-BOT-BC13705  Ambrosia chamissonis H. E. Parks 1941-8-1 24181 Humboldt Big Lagoon Comment
  JEPS40955  Ambrosia chamissonis Joseph P. Tracy 1934-10-21 13687 Humboldt along coast in front of s end of Stone Lagoon; Dry Lagoon 3 Comment
  SEINET7014139  Ambrosia chamissonis R. Mastrogiuseppe, J. Mastrogiuseppe 1983-7-16 3491 Humboldt Dunes near Dry Lagoon. Comment
  HSC71166  Amelanchier alnifolia Thomas W. Nelson 1977-5-30 3412 Humboldt Base of Eight Mile Ridge upstream from Anderson's Ford. 701 Comment
  HSC70814  Amelanchier alnifolia var. semiintegrifolia Gail Newton 1980-7-24 1778 Humboldt Near Somes Mtn. 1615 Comment
  HSC74216  Amelanchier alnifolia var. semiintegrifolia M. A. Baker 1980-7-23 3173 Humboldt Near Orleans Mtn. 1859 Comment
  UC466773  Amelanchier utahensis P. E. Goddard 1901-7-12 77 Humboldt Hupa Comment
  RSA86667  Ammophila arenaria F. W. Peirson 1941-7-29 13112 Humboldt Little River Beach State Park. Comment
  UC906761  Anagallis arvensis Joseph P. Tracy 1947-9-1 17925 Humboldt Big Lagoon 6 Comment
  HSC17844  Anagallis arvensis W. F. Nickel 1965-5-6 Humboldt On Humboldt State University campus, behind Biological Science Bldg. Comment
  HSC28135  Anagallis arvensis J. D. Ackerman 1973-5-6 47 Humboldt Redcrest Comment
  HSC89589  Anagallis arvensis M. Roantree 1985-5-24 54 Humboldt NW side of Trinidad Head, along trail Comment
  POM286830  Anagallis arvensis Lyman Benson 1929-7-19 1585 Humboldt Weet Ranger St. Comment
  UCD128833  Anaphalis margaritacea Linda M. Barker 1976-8-2 1671 Humboldt 3 miles west of Arcata. Comment
  POM232054  Anaphalis margaritacea Roxana S. Ferris 1937-8-21 9387 Humboldt Face of cliff above beach, Shelter Cove. Comment
  SEINET11855265  Anaphalis margaritacea J. P. Tracy 1950-1 19363 Humboldt On foothills of Cape Ridge, .5 mi S of town, along coast road, 1 mile inland from Cape Mendocino 61 Comment
  SEINET2030725 Image available Anaphalis margaritacea H. E. Parks, S. T. Parks 24237 Humboldt Along highway, Stone Lagoon. Comment
  HSC44555  Anemone deltoidea Brad Klipfel 1973-7-15 174 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  UC13934  Anemone deltoidea W. C. Blasdale 1896-6-1 Humboldt in redwoods Freshwater Comment
Read comments
Sep 17 2012
  CAS-BOT-BC391772  Anemone deltoidea M. Louise Hutchinson 1913-5-1 s.n. Humboldt Near Eureka Comment
  HSC98600  Anemone deltoidea Cara Witte 2008-6-15 736 Humboldt Along National Forest 1. 3 miles north from intersection with Forest Service Road 6N01B. 1456 Comment
  SEINET12094124  Anemone deltoidea F. H. Utech 1988-1 88 -273 Humboldt 14 mi W of Bridgeville enroute to Carlotta on CA 36, Van Duzen County Park (Pamplin Grove) 50 Comment
  UC1103415  Angelica genuflexa Joseph P. Tracy 1948-9-5 18168 Humboldt Happy Camp Mountain, Trinity Summit area Happy Camp Mountain; , Trinity Summit area 1280 Comment
  UC582657  Angelica hendersonii Joseph P. Tracy 1936-10-24 15205 Humboldt Table Bluff 91 Comment
  JEPS14221  Angelica tomentosa Joseph P. Tracy 1938-8-14 16107 Humboldt Northern Coast Ranges, Willow Creek Canyon Willow Creek Canyon; Northern Coast Ranges, Willow Creek Canyon 457 Comment
  SEINET13943409 Image available Angelica tomentosa W. A. Weber 1964-1 12204 Humboldt Mountain grade between summit of ridge separating Redwood Creek from Hoopa Valley, a few miles west of Hoopa Comment
  HSC81929  Anisocarpus madioides Thomas W. Nelson, Jane P. Nelson 1979-7-3 4950 Humboldt Along road to Joe Losey property at junction of Kneeland and Maple Creek Rds. 610 Comment
  CAS-BOT-BC77290  Antennaria microphylla Joseph P. Tracy 1935-7-24 14169 Humboldt Trinity Summit, near ranger station 1828 Comment
  HSC56950  Antennaria suffrutescens Overton, Butler 1979-7-23 9450 Humboldt Near Horse Mtn. Mine, close to the town of Willow Creek 1295 Comment
  JEPS13332  Anthemis arvensis Joseph P. Tracy 1937-10-3 15691 Humboldt Willow Creek Trinity River Valley, Willow Creek 152 Comment
  RSA254784  Anthemis cotula Thomas W. Nelson 1973-8-19 1111 Humboldt McKeown Ranch north of Dinsmore Comment
  HSC10103  Anthoxanthum occidentale E. W. Styskel 1964-3-7 53 Humboldt 1.5 mi. SE of Redcrest along Hwy. 101 Comment
  UCD85497  Anthoxanthum occidentale H. S. Yates 1936-6-22 5850 Humboldt 4 miles NE of Bald Mtn. Comment
  HSC40341  Anthoxanthum odoratum Linda M. Barker 1976-4-30 1402 Humboldt 3 mi. W of Arcata Comment
  HSC8950  Anthoxanthum odoratum D. B. Bader 1963-4-1 24 Humboldt Second of the Clam Beach lagoons, W of Hwy. 101 Comment
  UC642322  Anthriscus caucalis H. E. Parks and Joseph P. Tracy 1927-4-24 7927 Humboldt Eureka; railroad station 6 Comment
  RSA425833  Antirrhinum vexillocalyculatum subsp. breweri T. A. Bonser 1931-7-14 14970 Humboldt Garberville. Comment
  UC147926  Antirrhinum vexillocalyculatum subsp. breweri Joseph P. Tracy Jul 1908 2790 Humboldt ridge between Van Duzen River and Mad River (near Low Gap, Humboldt and Trinity Counties); Northern Coast Ranges 914 Comment
  HSC73424  Aphanes occidentalis Robert Kirkpatrick, Doug Renwick 1981-4-3 147 Humboldt 2 mi. N of Coastguard Station on Samoa Blvd. 5 Comment
  HSC58036  Apocynum androsaemifolium G. L. Clifton 1979-7-31 11874 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  JEPS49817  Apocynum cannabinum Joseph P. Tracy 1932-6-14 10148 Humboldt Trinity R. Valley, at Willow Creek Trinity R. Valley, Willow Creek 152 Comment
  SEINET12104677  Aquilegia formosa E. A. York 1990-1-10 2663 Humboldt USGS Redwood Field Station, Arcata Comment
  HSC31632  Aquilegia formosa var. formosa Glenn McGourty 1974-4-27 18 Humboldt 1 mi. from Capetown Bridge Comment
Read comments
May 26 2016
  HSC102930  Arabis M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-12 929 Humboldt Rustic Camp, northwest of Patterson Meadows 1512 Comment
  HSC70390  Arabis breweri var. breweri Gail Newton 1980-6-7 140 Humboldt Near Brush Mtn. 1128 Comment
  HSC58213  Arabis glabra Walter Overton 1979-8-1 12342 Humboldt Near Mill Creek, Middle Fork, close to the town of Hoopa. 1341 Comment
  HSC58354  Arabis glabra Walter Overton, Butler 1979-8-2 12692 Humboldt Near Grogan Hole, close to the town of Hoopa 1554 Comment
  HSC6523  Arabis glabra D. E. Anderson 1962-5-10 2206 Humboldt Lanphere Ranch. Comment
  HSC73687  Arabis glabra M. A. Baker 1980-7-15 2980 Humboldt Near Whiting Ridge. 1341 Comment
  HSC73782  Arabis glabra Gail Newton 1980-6-28 701 Humboldt Near Mad River Butte. 1536 Comment
  UC1198312  Arabis glabra Joseph P. Tracy 1947-7-5 17815 Humboldt near Box Camp; Trinity Summit 1524 Comment
  CDA38202  Aralia californica T. Gallion & M. S. Bergseng 1959-7-23 2816 Humboldt Red Gap Road, 3 miles east of Hoopa. 0 Comment
  OBI20498  Aralia californica Carl B. Wolf 1937-9-8 9302 Humboldt North Coast Range, Bull Crk-Petrolia Rd, 12 mi W of Redwood hwy 457 Comment
  CAS-BOT-BC128693  Arbutus menziesii Carl D. Duncan 1920-9-22 313 Humboldt Common in the vicinity of Hoopa Comment
  CHSC26302  Arbutus menziesii Kathy M. Clemens 1977-4-8 15 Humboldt .5 mi W of Willow Creek, Hwy 299E. 93 mi W of Redding. 179 Comment
  HSC7602  Arbutus menziesii Dan O'Brien 1962-5-19 Humboldt 4 1/2 mi. E on Fickle Hill Rd. Comment
  POM118486  Arbutus menziesii Marcus E. Jones 1924-4-25 s.n. Humboldt Garberville Comment
  UCR178912  Arbutus menziesii R. G. Swinney 1968-4-13 243 Humboldt North Coast, Lanphere's Preserve, west of Arcata 15 Comment
  SD42342  Arctostaphylos canescens Carl B. Wolf 1937-9-13 9335 Humboldt North Coast Range, Horse Mountain. 1525 Comment
  SEINET11984869  Arctostaphylos canescens Unknown 1965-1 543 Humboldt top of Chimisal Mountain, W of Wailaki Recreation Area, Bureau of Land Management Comment
  CAS-BOT-BC23907  Arctostaphylos canescens subsp. sonomensis Joseph P. Tracy 1947-7-9 17861 Humboldt Horse Mountain 1432 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-BC23764  Arctostaphylos columbiana J. E. Adams 1935-5-12 1048 Humboldt Patrick's Point Comment
  CAS-BOT-BC23779  Arctostaphylos columbiana Joseph P. Tracy 1936-8-24 15170 Humboldt Fickle Hill, 6 mi. SE of Arcata 609 Comment
  CAS-BOT-BC23816  Arctostaphylos columbiana Joseph P. Tracy 1936-8-24 15171 Humboldt Fickle Hill, 6 mi. SE of Arcata 609 Comment
  HSC37842  Arctostaphylos columbiana Thomas W. Nelson, James Nelson 1976-3-11 2267 Humboldt Beside Hwy. 101 along N side of Table Bluff Comment
  HSC62325  Arctostaphylos columbiana Ruby Van Deventer 1959-2-28 Humboldt Patrick's Point on Coastal Bluff Comment
  SBBG5510  Arctostaphylos columbiana M. J. Cody 1938-7-15 Humboldt Trinidad Comment
  SBBG58410  Arctostaphylos columbiana H. E. Parks -Dec-1931 4950 Humboldt Hobson's, Trinidad 60 Comment
  UC1198661  Arctostaphylos columbiana Joseph P. Tracy 1928-3-4 8403 Humboldt Miranda South Fork of Eel River 121 Comment
  UC585920  Arctostaphylos columbiana Joseph P. Tracy 1936-8-24 15171 Humboldt 6 mi se Arcata; Fickle Hill 609 Comment
  RSA13425  Arctostaphylos columbiana var. tracyi H. E. Parks 1931-12 4950 Humboldt Hobson's Trinidad. 61 Comment
  UC1120179  Arctostaphylos glandulosa subsp. glandulosa A. E. Wieslander 1931-5-19 200 Humboldt near Orleans; Klamath Forest, Hoopa Quadrangle Comment
  CAS-BOT-BC39163  Arctostaphylos hispidula Carl B. Wolf 1937-8-13 9226 Humboldt North Coast Range, 8 Mi. E. of Hoopa Valley on new road towards Trinity Summit. 1219 Comment
  RSA632803  Arctostaphylos knightii Jon E. Keeley 1996-10-13 27761 Humboldt Bald Hills Road, eastern end of Redwood National Park, 25 km west of Highway 96, north of Eureka. 700 Comment
  RSA633021  Arctostaphylos manzanita Jon E. Keeley 1996-10-13 27801 Humboldt Highway 96, 15 km north of Willow Creek. 100 Comment
  HSC68139  Arctostaphylos nevadensis J. P. Smith, J. O. Sawyer 1973-5-12 6689 Humboldt 6.1 mi. from Redwood Creek on Hoopa Rd. Comment
  HSC71585  Arctostaphylos nevadensis Gail Newton 1980-6-16 186 Humboldt Near Onion Mtn. 1280 Comment
  UCD52684  Arctostaphylos nevadensis Joseph P. Tracy 1939-8-16 16405 Humboldt Horse Mountain. 1432 Comment
  CAS-BOT-BC40027  Arctostaphylos nevadensis subsp. knightii Joseph P. Tracy 1935-6-23 13992 Humboldt French Camp Ridge 1066 Comment
  HSC98990  Arctostaphylos nevadensis subsp. nevadensis Cara Witte 2008-6-27 774 Humboldt Waterhole off Forest Service Road 5N10. Approximately 2 miles east of intersection with National Forest 1. 1365 Comment
  UC1198668  Arctostaphylos patula Joseph P. Tracy 1942-6-23 17263 Humboldt open ridges near Water-dog Lakes; Trinity Summit 1828 Comment
  HSC100469  Arctostaphylos pungens Carl C. Marshall Apr 1886 383 Humboldt Hoopa Valley. Comment
  CAS-BOT-BC46794  Arctostaphylos uva-ursi Joseph P. Tracy 1945-3-30 17505 Humboldt Eureka 45 Comment
  CAS-BOT-BC47212  Arctostaphylos uva-ursi John Thomas Howell 1954-4-25 29157 Humboldt Little River. Comment
  RSA152314  Arctostaphylos uva-ursi Joseph P. Tracy s.n. Humboldt Eureka. 46 Comment
  UC1196868  Arctostaphylos uva-ursi Joseph P. Tracy 1923-3-31 6170 Humboldt Table Bluff Northern Coast Region, around Humboldt Bay 60 Comment
  UC902046  Arctostaphylos viscida subsp. viscida Joseph P. Tracy 1949-8-4 18419 Humboldt Mud Springs Trinity Summit 1341 Comment
  HSC37923  Armeria maritima subsp. californica Peter Sorensen 1976-6-14 Humboldt N Spit Comment
  HSC59197  Armeria maritima subsp. californica Terry Roth 1979-5-24 78 Humboldt Samoa Dunes near the U.S. Coast Guard Station 5 Comment
  RSA249359  Armeria maritima subsp. californica J. D. Ackerman 1974-5-25 267 Humboldt 0.25 mi S of Lufenholtz County Beach off Scenic Dr between Trinidad and Moonstone Beach. Comment
  RSA296782  Armeria maritima subsp. californica Clark L. Miller 1979-5-24 2 -150 Humboldt Samoa Dunes off Samoa Blvd. Comment
  HSC65884  Arnica cernua M. A. Baker 1980-6-16 1944 Humboldt Near Onion Mtn. 1280 Comment
  HSC63286  Arnica discoidea M. A. Baker 1979-6-29 955 Humboldt Hopkin's Creek. 760 Comment
  UC581754  Arnica discoidea Joseph P. Tracy 1935-7-23 14154 Humboldt Lower end of Brett Hole Trinity Summit 1584 Comment
  JEPS20978  Arnica latifolia Joseph P. Tracy 1932-7-20 10736 Humboldt near Corral Prairie; Trinity Summit 1524 Comment
  CAS-BOT-BC94772  Arrhenatherum elatius R. C. Wenk; P. Hopkinson; M. Hammond; S. Spiegal 2008-6-6 832 Humboldt Humboldt Redwoods State Park. Look Prairie, 0.5 air miles N of Mattole Road, about 3 air miles W of Highway 101 243 Comment
  CDA1730  Arrhenatherum elatius var. bulbosum T. C. Fuller 1966-10-4 15237 Humboldt Northwest portion of Arcata. 0 Comment
  CAS-BOT-BC146270  Arrhenatherum elatius var. elatius H. S. Yates 1936-6-23 5851 Humboldt 2 miles east of mouth of Mad River. 30 Comment
  CAS-BOT-BC84834  Artemisia douglasiana Henry M. Pollard 1945-9-5 s.n. Humboldt Wilson Creek, Klamath River Canyon Comment
  UC1223091  Artemisia douglasiana Joseph P. Tracy 18501 Humboldt River bar 5 mi e Carlotta 30 Comment
  UC302288  Artemisia douglasiana Joseph P. Tracy 1926-9-6 7796 Humboldt near South Fork; Trinity River Valley Comment
  CHSC55838  Artemisia pycnocephala L. P. Janeway 1987-7-31 2540 Humboldt Vicinity of Eureka; North Spit of Humboldt Bay near the SE corner of the Eureka City Airport. 3 Comment
  BLMAR313  Artemisia suksdorfii Jennifer Anthony-Wheeler 2002-8-9 313 Humboldt Lost Coast Headland, trail to guthrie creek 30 Comment
  UC249831  Artemisia suksdorfii Joseph P. Tracy with H. E. Parks 1914-8-3 6741 Humboldt steep hills back of Big Lagoon; Northern Coast Region, Big Lagoon 152 Comment
  HSC55680  Aruncus dioicus var. acuminatus Overton, Butler 1979-7-26 9933 Humboldt Near Willow Creek, E Fork, close to the town of Willow Creek. 1326 Comment
  UC1103506  Asarum caudatum Joseph P. Tracy 1949-6-6 18304 Humboldt Happy Camp Mountain (in Trinity Summit Range, northeast of Hawkins Bar) 1280 Comment
  UC6169  Asarum caudatum Harley P. Chandler May 1901 1267 Humboldt Redwood Belt 457 Comment
  SEINET6652462  Asarum caudatum J. P. Tracy 1900-5-22 794 Humboldt Vicinity of Eureka Comment
  CAS-BOT-BC400620  Asarum hartwegii Harley P. Chandler 1901-6-1 1478 Humboldt North Coast Ranges, Klamath River 396 Comment
  HSC97950  Asarum hartwegii Cara Witte 2007-6-28 388 Humboldt Forest Service Road 6N08 (Friday Ridge Road). Near mile post 9.31 1278 Comment
  CAS-BOT-BC65944  Aspidotis densa L. R. Abrams 1918-6-15 7123 Humboldt Brannan Mt near Willow Creek 1371 Comment
  HSC40010  Aspidotis densa Thomas W. Nelson, Jane Nelson 1976-7-1 2906 Humboldt Along ridge N of Bear Creek 1463 Comment
  RSA53857  Aspidotis densa Henry M. Pollard 1944-9-8 s.n. Humboldt Orleans Mountain 1524 Comment
  UC62541  Aspidotis densa Harley P. Chandler June, 1901 1380 Humboldt Hupa Indian Reservation; North Coast Ranges 152 Comment
  CAS-BOT-BC193139  Astragalus rattanii var. rattanii M. Louise Hutchinson 1913-4-1 s.n. Humboldt Eureka Comment
  JEPS109876  Astragalus umbraticus Dean W. Taylor 2006-8-2 19569 Humboldt Showers Mountain; on north flank of the mountain, south rim of the Mad River canyon 1051 Comment
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Apr 4 2017
  HSC98039  Asyneuma prenanthoides Cara Witte 2007-7-17 539 Humboldt Along 4N38. Road to Board Camp Mountain. 1388 Comment
  CAS-BOT-BC69521  Athyrium filix-femina subsp. cyclosorum L. R. Abrams 1916-7-11 6053 Humboldt At mouth of Grizzly Creek on Van Duzon River. Comment
  SDSU1603  Athyrium filix-femina var. cyclosorum D. R. Harvey 1938-8-13 2252 Humboldt Redwood Park. Comment
  UC197924  Athyrium filix-femina var. cyclosorum Joseph P. Tracy 1912-7-25 3814 Humboldt along Black Creek Kneeland Prairie; Northern Coast Ranges 762 Comment
  HSC72972  Athysanus pusillus Gail Newton 1980-6-24 601 Humboldt Near Ladder Rock 1570 Comment
  UC1198292  Athysanus pusillus Joseph P. Tracy 1922-4-30 6016 Humboldt near Willow Creek (Trinity River Valley); Northern Coast Ranges, Trinity River Valley 152 Comment
  HSC5123  Baccharis douglasii W. L. Jepson 1932-7-24 16391 Humboldt Tooey Ranch, Garberville Comment
  JEPS21274  Baccharis glutinosa Joseph P. Tracy 1938-8-21 16128 Humboldt Little River 9 Comment
  UC469067  Baccharis glutinosa John Matthiesen 1908-8-7 Humboldt Loleta Comment
  RSA43689  Baccharis pilularis H. M. Pollard 1947-8-30 s.n. Humboldt North Road along Klamath River near Redcap Creek. Orleans region. Comment
  UC1004331  Baccharis pilularis W. L. Colwell 1954-11-20 20 Humboldt 3 mi e of, along Eel River South Fork Quadrangle 29B4; Eel River 91 Comment
  CHSC10152  Baccharis pilularis subsp. consanguinea J. W. Johnson 1961-9-4 1102 Humboldt In the hollow north of dune 3 north Christenson Farm, Samoa Peninsula. Comment
  UCD129438  Baccharis pilularis subsp. consanguinea Linda M. Barker 1976-9-3 1691 Humboldt 3 miles west of Arcata. Comment
  UC1198287  Barbarea orthoceras Joseph P. Tracy 1914-6-28 4516 Humboldt near Hydesville 60 Comment
  UC1198289  Barbarea orthoceras Joseph P. Tracy 1932-7-16 10642 Humboldt along creek in McKay Prairie 1524 Comment
  HSC64813  Barbarea verna J. P. Smith, Steve Selva 1970-6-30 4125 Humboldt Comment
  CHSC68559  Bellardia trixago Vernon H. Oswald 1997-4-29 8361 Humboldt Somoa Dunes Recreation Area at the south end of the North Spit separating Hunbolt Bay from the ocean. Near seal level. Coastal Dunes. Comment
  HSC39790  Bellis perennis Peter Sorensen 1976-6-16 Humboldt Woodley Island Comment
  HSC5193  Bellis perennis Francis Winter 1960-4-24 Humboldt Samoa Peninsula 6 mi. W of Arcata Comment
  CAS-BOT-BC400046  Berberis L. B. Kildale 1931-8-9 s.n. Humboldt Three Creeks on Willow Creek road Comment
  SEINET200310  Berberis aquifolium J. P. Tracy 1934-7-6 13660 Humboldt Lawrence Creek at crossing of the Kneeland Road 457 Comment
  HSC76285  Berberis aquifolium var. aquifolium Denis Kearns 1981-6-24 7 Humboldt Near Cedar Camp 1219 Comment
  UC1198384  Berberis aquifolium var. aquifolium Joseph P. Tracy 1948-9-5 18186 Humboldt on ridge 2 mi e Grove's Prairie (3 mi s of Grizzly Camp) 1524 Comment
  UCD95065  Berberis aquifolium var. aquifolium James P. Smith 1973-5-5 6478 Humboldt Along Cook and Green Pass Road. Comment
  CAS-BOT-BC75803  Berberis pinnata Doris K. Kildale 1929-3-19 7025 Humboldt Top of Liscom Hill, near Essex. 853 Comment
  RSA24183  Berberis pinnata C. B. Wolf 1941-3-1 9974 Humboldt Kneeland Prairie, 1/8 mi. s.e. of Kneeland school. 762 Comment
  CAS-BOT-BC66273  Blechnum spicant Volney Rattan 1878-1-1 s.n. Humboldt Mad River Comment
  SBBG25588  Blechnum spicant E. R. Blakley 1966-8-17 6792 Humboldt Little Crk, Prairie Crk St Park, ca. 10 mi N of Orick 64 Comment
  UC123067  Botrychium multifidum Mrs. R. M. Austin 1894-1 Humboldt Ferndale Comment
  HSC75263  Boykinia major J. O. Sawyer, M. A. Ericksen 1980-8-18 4057 Humboldt Slopes below Mill Creek Lakes, N Trinity Mtn. Research Natural Area 1707 Comment
  HSC99840  Boykinia occidentalis C. B. Wolf 1927-8-30 1254 Humboldt 3 mi. S of Thorn along old coast road Comment
  CAS-BOT-BC106293  Brickellia californica J. Clausen 1932-9-19 696 Humboldt Dyerville, Eel River, in dry river bed. Comment
  HSC83441  Briza maxima R. N. Raynor 1935-5-22 Humboldt Ft. Seward Comment
  UCD57276  Briza maxima Joseph P. Tracy 1950-5-30 18711 Humboldt Trinity River Valley, at Willow Creek. 152 Comment
  SEINET10835828  Briza maxima Botany 1985-6-1 BOTANY s.n. Humboldt Gray's falls campground off hwy 299. Found in a sunny, open disturbed site Along the road at the entrance to the campground 241 Comment
  HSC104034  Briza minor E. R. Fyer 2015-4-26 25 Humboldt Eureka; vacant lot off Waterfront Drive 3 Comment
  HSC22043  Brodiaea elegans subsp. elegans D. G. Hauger 1967-7-15 22 Humboldt Shower Pass Rd., Kelly's turn off 915 Comment
  HSC32104  Brodiaea stellaris D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-17 5697 Humboldt McKeown Ranch, N of Dinsmore Comment
  RSA91688  Bromus carinatus F. W. Peirson 1941-7-23 13118 Humboldt Van Damme State Park. Along the creek about 2 miles from camp. Comment
  CAS-BOT-BC149566  Bromus carinatus var. carinatus Joseph P. Tracy 1935-5-16 13806 Humboldt Eureka. 60 Comment
  UC34027  Bromus catharticus Henry Melde 1902-2-8 Humboldt Eureka Comment
  UC1103360  Bromus commutatus Joseph P. Tracy 12621 Humboldt 2 to 5 mi e of the South Fork (along Eel River, Camp Grant); Eel River, Camp Grant 45 Comment
  UC1145144  Bromus commutatus Joseph P. Tracy 1942-6-15 17130 Humboldt near Redcrest Resort (Englewood); Englewood 91 Comment
  UC552679  Bromus commutatus Joseph P. Tracy 1935-5-25 13873 Humboldt Fort Seward 106 Comment
  BLMAR31  Bromus diandrus Brad Barr June, 1982 31 Humboldt King range, on beach Comment
  HSC9285  Bromus diandrus R. E. Hafenfeld 1965-5-9 50 Humboldt Junction of County Rd. and Gold Bluff Beach Rd. Comment
  HSC9293  Bromus diandrus S. J. Hawks 1965-5-18 88 Humboldt In front of Eureka City Airport. Comment
  HSC9300  Bromus diandrus E. W. Styskel 1964-4-28 75 Humboldt End of Davis St. at the edge of Eel River in Rio Dell Comment
  UC1103359  Bromus diandrus Joseph P. Tracy 1912-7-26 3877 Humboldt Northern Coast Ranges, Kneeland Prairie Kneeland Prairie; Northern Coast Ranges, Kneeland Prairie 762 Comment
  HSC40343  Bromus hordeaceus Linda M. Barker 1976-8-24 1681 Humboldt 3 mi. W of Arcata 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
  UC1103273  Bromus laevipes Joseph P. Tracy 1912-7-31 3934 Humboldt Northern Coast Ranges, summit of Buck Mountain Buck Mountain; Northern Coast Ranges, Buck Mountain 1676 Comment
  RSA152294  Bromus orcuttianus Joseph P. Tracy 1936-5-8 15124 Humboldt Trinity Summit; on Ridge 2 miles east of Grove's Prairie 1463 Comment
  UC1103357  Bromus sterilis Joseph P. Tracy 1920-5-31 5331 Humboldt near Carlotta (along Yager Creek); Northern Coast Ranges, Yager Creek 60 Comment
  UC277174  Bromus sterilis Joseph P. Tracy 1921-5-30 5493 Humboldt Northern Coast Ranges, Kneeland Prairie Kneeland Prairie; Northern Coast Ranges, Kneeland Prairie 762 Comment
  SEINET200634 Image available Bromus tectorum Joseph P. Tracy 1931-5-3 9349 Humboldt Along Mad River near Blue Lake. 15 Comment
  HSC75287  Bromus vulgaris J. O. Sawyer, M. A. Ericksen 1980-8-18 4059 Humboldt Slopes below Mill Creek Lakes, N Trinity Mtn. Research Natural Area 1707 Comment
  RSA127011  Bromus vulgaris H. S. Yates 1936-6-23 5873 Humboldt 3 miles S. E. of Scotia; Rohnerville Comment
  UC167232  Bromus vulgaris Joseph Burtt Davy and Walter C. Blasdale 1899-6-8 5363 Humboldt near Harris (North Coast Ranges); North Coast Ranges Comment
  SEINET10524083  Bromus vulgaris A. Arthur Heller 1923-7-10 Heller 13789 Humboldt Open places in the redwood forest between Scotia and Pepperwood. Comment
  HSC31451  Cacaliopsis nardosmia D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-13 5569 Humboldt Westward lower slopes of Black Lassic near Trinity Co. line. 1585 Comment
  CAS-BOT-BC185317  Calamagrostis foliosa Joseph Burtt Davy 1900-5-1 6602 Humboldt Hardy Creek. Comment
  UCD57537  Calamagrostis ophitidis R. Tofsrud 1948-9-3 s.n. Humboldt 3-4 miles south of Berry's Summit at road junction near summit of Horse Mountain. 1463 Comment
  HSC17635  Calandrinia ciliata R. T. Forester 1963-5-6 48 Humboldt 1 mi. S of Fairhaven on Samoa Rd. Comment
  JEPS84870  Callitriche stagnalis C. Thomas Philbrick 1987-6-9 2048 Humboldt ca. 0.5 mi. n. Orick (Redwood Creek, n. side of Rt. 101); Redwood Creek Comment
  HSC25070  Callitriche stagnalis R. W. Becking 1972-8-20 Humboldt Big Lagoon, along Maple Creek above main water line. Comment
  HSC57042  Calocedrus decurrens Overton, Butler 1979-7-24 9685 Humboldt Near Friday Camp, close to the town of Willow Creek. 1250 Comment
  HSC76306  Calocedrus decurrens Teresa Prendusi 1981-7-9 224 Humboldt Near Cedar Camp 1256 Comment
  UC667124  Calochortus amabilis Joseph P. Tracy 1927-5-30 8090 Humboldt Garberville 152 Comment
  HSC97969  Calochortus tolmiei Cara Witte, Michael Scott 2007-6-22 347 Humboldt Board Camp Mountain, jeep trail between Tri Board Camp and Fork Camp 1565 Comment
  UC1197675  Calochortus tolmiei Joseph P. Tracy 1927-6-12 8148 Humboldt Horse Mountain 1280 Comment
  UC503034  Caltha biflora Joseph P. Tracy July 16-19, 1930 8971 Humboldt Northern Coast Ranges. At McKay Camp, South Fork Mountain. 1676 Comment
  JEPS39006  Calycadenia truncata J. P. Tracy 1911-7-5 3334 Humboldt Willow Creek Trinity River, Willow Creek 152 Comment
  UC1196476  Calypso bulbosa Joseph P. Tracy 1949-6-6 18303 Humboldt ne of Hawkins Bar (in Trinity Summit Range, Happy Camp Mountain); Trinity Summit Range, Happy Camp Mountain 1280 Comment
  HSC95802  Calypso bulbosa Kevin Thomas 2004-4-26 15 Humboldt Titlow Hill Rd. Comment
  HSC17646  Calyptridium monospermum W. K. Parks Jul 1933 1198 Humboldt S Fork Mtn. Comment
  HSC32128  Calyptridium monospermum D. E. Anderson, T. Nelson, S. Dowty 1972-6-14 5604 Humboldt Mt. Lassic and two smaller peaks to immediate E 1768 Comment
  HSC55033  Calyptridium monospermum Overton, Butler 1979-7-31 11473 Humboldt Near N Trinity Mtn., close to the town of Hoopa 1940 Comment
  HSC79454  Calystegia purpurata subsp. purpurata Kenneth Clark 1980-4-18 604 Humboldt Above Dead Man's Gulch near parking access 137 Comment
  CHSC23189  Calystegia soldanella Robert F. Thorne; P. Everett 1965-8-7 35217 a Humboldt Samoa Peninsula. 3 Comment
  UC1586964  Camassia Juha Pykala and D. H. Norris 1987-6-5 1391 Humboldt e of Maple Creek (Snow Mountain Lake); Snow Mountain Lake 1386 Comment
  HSC66287  Camassia quamash subsp. linearis M. A. Baker 1980-6-8 1878 Humboldt Near Buck Flat. 1554 Comment
  HSC59672  Camissonia cheiranthifolia George Kirn 1977-10-14 Humboldt 1/2 mi. NW of Samoa Comment
  RSA186811  Camissonia cheiranthifolia subsp. cheiranthifolia Peter H. Raven, R. Snow 1958-7-21 13661 Humboldt Cape Mendocino Comment
  CDA18242  Camissoniopsis cheiranthifolia G. D. Barbe, T. C. Fuller 1974-6-19 1880 Humboldt North Coast Ranges; Mad River mouth, beach S of river, at end of Iversen Lane, Tyee City. 30 Comment
  CAS-BOT-BC160241  Camissoniopsis cheiranthifolia subsp. cheiranthifolia J. P. Tracy 1909-7-18 3017 Humboldt Sand hills of Ocean Beach at Samoa, opp. Eureka Comment
  SEINET10462961  Campanula prenanthoides Philip A. Munz 1936-8-10 Munz 14338 Humboldt Dry roadside, Lottle Van Duzen River, 15 miles east of Bridgeville Comment
  SEINET10462967  Campanula prenanthoides Stephen S. Tillett 1956-7-6 Tillett 612 Humboldt Area cleared by logging and fire, south slope along Bar Shanty Road, 5 miles from Orleans 488 Comment
  SEINET10462971  Campanula prenanthoides Pollard 1948-7-23 POLLARD s.n. Humboldt Reece Point near Orleans Comment
  HSC56388  Campanula scouleri Griswold, Butler 1979-7-11 6946 Humboldt Near Snow Camp Mtn., close to the town of Willow Creek. 1320 Comment
  UC562695  Capsella bursa-pastoris Joseph P. Tracy 1936-6-17 14968 Humboldt Burr Valley, on nw side of Buck Mountain Burr Valley; Buck Mountain, Burr Valley 1066 Comment
  UC492256  Cardamine angulata Joseph P. Tracy 1928-4-29 8425 Humboldt Prairie Creek Northern Coast Ranges, Prairie Creek 152 Comment
  CAS-BOT-BC37424  Cardamine californica Doris K. Kildale 1927-1-23 2974 Humboldt Van Duzen River at the Blue Shale. Comment
  HSC90227  Cardamine oligosperma L. Watson, J. Meninga Mar 1991 13 Humboldt Near Manila, Mad River slough and dunes, SW edge of parking lot. Comment
  CAS-BOT-BC384763  Cardionema ramosissimum W. R. Dudley 1899-6-1 s.n. Humboldt Eureka Penninsula [Peninsula] Comment
  SEINET201070  Carduus pycnocephalus Joseph P. Tracy 1936-6-28 15008 Humboldt Hungry Hollow on Bald Mt 762 Comment
  HSC74695  Carex abrupta Gail Newton 1981-8-7 2462 Humboldt Near Board Camp Mtn. 1478 Comment
  UC197208  Carex abrupta Joseph P. Tracy 1913-6-13 4104 1/2 Humboldt opposite Buck Mountain (Dinsmore's Ranch); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  HSC70464  Carex aquatilis Gail Newton 1980-7-20 1646 Humboldt Near Bell Swamps 1426 Comment
  UC303150  Carex aquatilis var. dives Joseph P. Tracy 1925-7-8 7172 Humboldt Bald Mountain, meadow near High Prairie Northern Coast Ranges 1066 Comment
  RSA246855  Carex bolanderi Robert F. Thorne, Percy C. Everett 1965-8-5 35136 Humboldt Mt. Chamisal: below summit. 747 Comment
  UC562429  Carex bolanderi Joseph P. Tracy 1936-5-29 14823 Humboldt French Camp Ridge 1066 Comment
  UC562431  Carex bolanderi Joseph P. Tracy 1936-6-9 14912 Humboldt Upper Mattole 457 Comment
  HSC44057  Carex bolanderi Thomas W. Nelson, Jane P. Nelson 1977-7-1 3559 Humboldt Along Blanket Creek 1494 Comment
  CAS-BOT-BC34277  Carex concinnoides Joseph Prince Tracy 1927-6-19 8190 Humboldt Northern Coast Range. Patrick's Point, in fern covered prairies on coast terraces. 60 Comment
  CHSC98363  Carex densa Thomas W. Nelson; Jane P. Nelson 1982-7-10 7086 Humboldt North Coast Ranges. Along Mad River at Anderson's Ford. 609 Comment
  CAS-BOT-BC34971  Carex densa Joseph Prince Tracy 1936-6-3 14848 Humboldt Trinity River Valley, at Willow Creek. 152 Comment
  CAS-BOT-BC34980  Carex densa Joseph Prince Tracy 1927-5-30 8095 Humboldt Northern Coast Ranges.Garberville. 121 Comment
  UC194806  Carex echinata Joseph P. Tracy 1914-7-4 4532 Humboldt High Prairie Northern Coast Ranges, Bald Mountain 1066 Comment
  HSC102223  Carex echinata subsp. echinata M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-4 1140 Humboldt Patterson Meadows 1555 Comment
  HSC48777  Carex echinata subsp. phyllomanica Brad Klipfel 1974-5-11 340 Humboldt SW side of Big Lagoon Comment
  HSC103369  Carex feta Thomas W. Nelson, Jane Nelson 1982-7-11 7115 Humboldt Along road from Hindley's cabin on McKeown Ranch to Anderson's Ford at Mad River Comment
  UC1152062  Carex feta Joseph P. Tracy 1950-8-7 19267 Humboldt meadow at Box Camp Trinity Summit 1463 Comment
  CAS-BOT-BC21282  Carex fracta Joseph Prince Tracy 1937-7-25 15542 Humboldt Trinity Summit. Head of Hors-Linto Creek. 1371 Comment
  UC1103076  Carex globosa Joseph P. Tracy 1933-6-9 12538 Humboldt Englewood North Coast Ranges 91 Comment
  CAS-BOT-BC22312  Carex harfordii Joseph Prince Tracy 1935-5-24 13811 Humboldt Eureka. 60 Comment
  CAS-BOT-BC22313  Carex harfordii Joseph Prince Tracy 1935-6-8 13936 Humboldt Eureka. 60 Comment
  SEINET7561246 Image available Carex harfordii Andrew L. Hipp 1999-5-31 456 Humboldt Alder Point, Alder Pt Road ca 3 mi S of Alder Pt. 503 Comment
  SEINET7561247 Image available Carex harfordii David Castaner 1989-6-19 10253 Humboldt Gold Bluff Beach at entrance. Comment
  CAS-BOT-BC21752  Carex hassei Joseph Prince Tracy 1927-6-17 8170 Humboldt Big Lagoon. 6 Comment
  HSC76780  Carex hendersonii L. P. Janeway 1983-5-29 320 Humboldt Along Jolly Giant Creek, E of HSU campus 61 Comment
  UC562556  Carex integra Joseph P. Tracy 1935-7-23 14139 Humboldt Corral Prairie Trinity Summit 1584 Comment
  CAS-BOT-BC28501  Carex lenticularis var. limnophila Robert F. Thorne 1965-9-19 35461 Humboldt Freshwater Lagoon S of Orick. 3 Comment
  UC249732  Carex lenticularis var. limnophila Joseph P. Tracy 1924-7-13 6719 Humboldt Big Lagoon Northern Coast Region 6 Comment
  UC1103575  Carex leptalea H. E. Parks and Joseph P. Tracy 1931-6-7 9557 Humboldt vicinity Trinidad; Northern Coast Region 60 Comment
  CAS-BOT-BC31470  Carex leptopoda Henry M. Pollard 1945-9-1 s.n. Humboldt Camp Creek, Klamath River Canyon. Comment
  UC249511  Carex lyngbyei Joseph P. Tracy 1922-5-28 6059 Humboldt Little River mouth Northern Coast Ranges 3 Comment
  JEPS79850  Carex mendocinensis Joseph P. Tracy 1935-7-14 14086 Humboldt North Coast Ranges, Grouse Mountain Grouse Mountain; North Coast Ranges, Grouse Mountain 1524 Comment
  HSC73580  Carex multicaulis Gail Newton 1980-7-14 1480 Humboldt Near Last Chance Ridge. 1219 Comment
  CHSC85571  Carex multicostata L. P. Janeway 2003-7-30 7945 Humboldt High North Coast Ranges. Edge of seepy area at upper edge of Clear Lake, 2.9 km southeast of Titlow Hill. 1494 Comment
  CAS-BOT-BC119544  Carex nudata L. P. Janeway 1983-7-23 437 Humboldt Hoopa quad. Along the W side Klamath River at Aikens Creek. 91 Comment
  UC1103621  Carex nudata Joseph P. Tracy 1933-5-18 12194 Humboldt 6 mi W of Blue Lake (Mad River) 15 Comment
  HSC86334  Carex obnupta Rudolf W. Becking 1988-4-9 Humboldt South Spit, opposite Fields Landing Comment
  UC1598395  Carex obnupta Joy Mastrogiuseppe, Tom Nelson 1986-7-22 4353 Humboldt Burr Creek Burr Valley Comment
  HSC7062  Carex obnupta J. W. Johnson 1961-4-19 1248 Humboldt Arcata, along Miller Lane, Miller Farm, Samoa Peninsula Comment
  JEPS80020  Carex obnupta Joseph P. Tracy 1912-6-16 3701 Humboldt above edge of salt marsh at Hookton Northern Coast Region, Humboldt Bay, Hookton 0 Comment
  POM160309  Carex ovalis Joseph P. Tracy 1926-6-20 7631 Humboldt Horse Mountain. 1463 Comment
  UC194815  Carex ovalis Joseph P. Tracy 1914-7-4 4547 Humboldt High Prairie Northern Coast Ranges, Bald Mountain; High Prairie on Bald Mt., Humboldt Co. 1066 Comment
  CAS-BOT-BC119232  Carex pachystachya Joseph Prince Tracy 1936-7-5 15043 Humboldt Grouse Mountain. 1524 Comment
  UC1115819  Carex pachystachya Joseph P. Tracy 1939-7-9 16340 Humboldt Snow Camp 1402 Comment
  HSC90642  Carex pansa Gail Newton 1982-5-2 2517 Humboldt Elk River Wildlife Area, Eureka Comment
  HSC76847  Carex praticola L. P. Janeway 1982-6-20 15 Humboldt Near road underdrain, 30 m N on FS Rd. 6N36 from Titlow Hill Rd. 1384 Comment
  CAS-BOT-BC118821  Carex preslii R. Tallent 1987-8-11 893 Humboldt Six Rivers National Forest. Roadside S of Horse Mtn. 1449 Comment
  JEPS79869  Carex rossii Joseph P. Tracy 1904-5-1 2041 Humboldt Northern Coast Region, at Eureka Eureka; Northern Coast Region, Eureka 0 Comment
  HSC102155  Carex subfusca M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-3 1063 Humboldt Patterson Meadows 1555 Comment
  CHSC106512  Carex tumulicola Peter F. Zika 2009-6-15 24495 Humboldt Outer North Coast Range (NCoRO), between Lord-Ellis and Berry summits, above Route 299, 2.3 road miles W of junction with Chezen Road. 680 Comment
  CAS-BOT-BC115543  Carex unilateralis Joseph Prince Tracy 1941-6-29 16935 Humboldt Large dense clump, Hettenshaw Valley 944 Comment
  JEPS79867  Carex unilateralis Joseph P. Tracy 1933-6-9 12539 Humboldt Fortuna North Coast Ranges, Fortuna 18 Comment
  UC1116270  Carex unilateralis Joseph P. Tracy 1946-5-30 17539 Humboldt near Bridgeville 457 Comment
  UC585635  Carex unilateralis Joseph P. Tracy 1937-8-7 15618 Humboldt Bald Mountain, Murphy Ridge 914 Comment
  UC562343  Carex vesicaria var. major Joseph P. Tracy 1934-7-13 13388 Humboldt Dow's Prairie 60 Comment
  RSA273334  Carex viridula B. D. Rogers 1965-10-2 1017 Humboldt Big Lagoon. 0 Comment
  CAS-BOT-BC114984  Carex viridula H. E. Parks 1935-9-1 5214 Humboldt Abundant in center of Dry Lagoon, south of Orick. Comment
  HSC26372  Carpobrotus chilensis T. O. Osborne 1970-9-16 37 Humboldt Trinidad Bay, Prisoner Rock Comment
  JEPS35822  Castilleja affinis subsp. litoralis Rimo Bacigalupi, and L. R. Heckard 8968 Humboldt hills above and w Cape Mendocino (about 20 mi n by road of Petrolia) Comment
  UC1222830  Castilleja affinis subsp. litoralis Joseph P. Tracy 1950-6-8 18749 Humboldt 1 mi e Cape Mendocino (s slope of Bear River Ridge, near Capetown); Cape Ridge, Bear River Ridge 152 Comment
  UC582582  Castilleja affinis subsp. litoralis H. E. Parks and Joseph P. Tracy 1923-5-19 6208 Humboldt vicinity Trinidad 60 Comment
  UCSB26617  Castilleja ambigua Havlik, Neil 1968-8-21 Humboldt Samoa, west of Eureka Comment
  CHSC68560  Castilleja ambigua subsp. humboldtiensis Vernon H. Oswald 1997-4-29 8351 Humboldt Near seal level. Humbolt Bay NWR, levee north of Long Pond along the arm of South Humbolt Bay separating Teal Island from the main part of the refuge. Comment
  HSC90806  Castilleja ambigua subsp. humboldtiensis Gail Newton 1982-5-2 2508 Humboldt Elk River Wildlife Area, Eureka Comment
  JEPS76823  Castilleja ambigua subsp. humboldtiensis L. R. Heckard with T. I. Chuang and R. C. Bacigalupi 1978-5-27 4804 Humboldt about 1.2 mi n Eureka bridge (Samoa peninsula); Samoa peninsula Comment
  HSC56184  Castilleja applegatei Gilbert Muth 1979-8-1 12116 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1677 Comment
  UC582569  Castilleja attenuata Joseph P. Tracy 1932-5-1 9887 Humboldt vicinity Garberville 121 Comment
  UC673218  Castilleja attenuata Lincoln Constance and Reed C. Rollins 1942-5-12 2891 Humboldt 1 mi s Orleans (Klamath River); Klamath-Siskiyou Region, Klamath River 121 Comment
  BLMAR71  Castilleja exserta Jennifer Anthony-Wheeler 1994-5-18 71 Humboldt Samoa/manilla dunes, growing in dune mat areas thru-out wetland 6 Comment
  JEPS103937  Castilleja exserta subsp. latifolia T. I. and F. M. Chuang 1991-7-9 7877 Humboldt Samoa Sandune, near Louisiana Pacific Plant. Comment
  RSA167244  Castilleja litoralis Joseph P. Tracy 1950-6-8 18749 Humboldt Bear River Ridge, south slope near Capetown. Cape Ridge. One mile east of Cape Mendocino. 152 Comment
  RSA221712  Castilleja litoralis Noel Holmgren, Liew Fah Seong 1969-6-24 3611 Humboldt 5.6 miles west of Ferndale. Comment
  RSA516622  Castilleja litoralis R. C. Bacigalupi, G. Thomas Robbins, C. L. Custer 1954-8-11 4758 Humboldt 1.2 miles south of Trinidad. Comment
  HSC92193  Castilleja mendocinensis E. Mackey 1986-7-6 Humboldt Patrick's Point State Park, on trail to Wedding Rock. Comment
  HSC70512  Castilleja miniata Gail Newton 1980-7-20 1615 Humboldt Near Bell Swamps 1426 Comment
  UC1196861  Castilleja miniata Joseph P. Tracy 1912-7-31 3950 Humboldt near Buck Mountain summit; Northern Coast Ranges 1676 Comment
  HSC35593  Castilleja pruinosa Thomas W. Nelson, Jane P. Nelson, James Nelson 1975-7-15 2004 Humboldt French Camp, Bald Hills. Comment
  HSC103246  Castilleja pruinosa Lisa D. Hoover 1996-6-12 145 Humboldt Six Rivers National Forest, Lower Trinity District, Grouse Mtn. Quad, Horse Mtn. 1463 Comment
  JEPS10642  Castilleja rubicundula subsp. lithospermoides Milo S. Baker 1923-7-30 165 Humboldt Yager Creek; Head of South Fork Comment
  UC1502102  Ceanothus R. Sutherland 1975-7-4 3 .4.7 75 Humboldt se corner of S 11 Pt. Delgada Quad. 548 Comment
  UC176125  Ceanothus cuneatus var. cuneatus Joseph P. Tracy 1913-6-17 4173 Humboldt near summit of Buck Mt. North Coast Ranges 1676 Comment
  UC33617  Ceanothus cuneatus var. cuneatus Chesnut and Drew 1888-8-1 Humboldt Grouse Creek Comment
  RSA134579  Ceanothus incanus Percy C. Everett, E. K. Balls 1959-10-26 23977 Humboldt 6 mi SE from Honeydew on Old Coast Road to Ettersberg. 518 Comment
  CHSC31293  Ceanothus integerrimus Mark Stopher 1980-6-4 107 Humboldt Near Elk River near Hwy 101 bridge. 1 Comment
  HSC100624  Ceanothus integerrimus Carl C. Marshall Jun 1886 262 Humboldt Bald Hills. Comment
  UC1198006  Ceanothus integerrimus Joseph P. Tracy 1937-6-26 15365 Humboldt Willow Creek Trinity River Valley 152 Comment
  RSA46465  Ceanothus integerrimus var. californicus Doris K. Kildale 1927-5-15 3301 Humboldt Petrolia Comment
  HSC97918  Ceanothus integerrimus var. integerrimus Cara Witte 2007-6-14 276 Humboldt Along National Forest 1. Near Kinsey Ridge. 2 miles north of intersection with 4N06. 1319 Comment
  HSC37606  Ceanothus oliganthus var. sorediatus R. Sutherland 1975-7-11 7 .11775 Humboldt Along county rd. 259 Comment
  UC176049  Ceanothus oliganthus var. sorediatus Joseph P. Tracy 1913-6-27 4354 Humboldt Near Bridgeville McClellan Mountain, Northern Coast Ranges 457 Comment
  CAS-BOT-BC51218  Ceanothus parryi C. Hart Merriam 1920-8-30 s.n. Humboldt Garberville Comment
  SD53199  Ceanothus parryi D. F. Howe 1962-5-21 Humboldt 2.3 miles north of Garberville on #101 152 Comment
  UCSB11762  Ceanothus parryi Neuns, R. 1940-7-13 Humboldt 3 miles south of Alder Point 548 Comment
  HSC23293  Ceanothus pumilus D. E. Anderson, J. P. Smith 1971-7-6 - 1294 Humboldt Horse Mtn. 10 mi W of Willow Creek 1524 Comment
  HSC76582  Ceanothus pumilus Denis Kearns 1981-6-24 20 Humboldt Near Cedar Camp 1219 Comment
  UCD162862  Ceanothus pumilus J. Bisbee 2014-3-27 828 Humboldt Thomas Rd, 8 miles of south Miranda. 313 Comment
  CAS-BOT-BC52989  Ceanothus thyrsiflorus A. A. Heller 1923-7-9 13782 Humboldt On grassy slopes along the grade south of Eureka Comment
  CAS-BOT-BC52996  Ceanothus thyrsiflorus C. V. Piper 1921-5-22 s.n. Humboldt Eureka Comment
  RSA398934B  Ceanothus thyrsiflorus Bonnie C. Templeton 1964-6-13 10087 Humboldt Lighhouse Point, Trinidad Head. Comment
  HSC18348  Ceanothus velutinus R. E. Thill 1965-5-15 33 Humboldt 1.0 mi E of Willow Creek on Hwy. 299 Comment
  UCD112839  Ceanothus velutinus J. Street 1950-6-24 s.n. Humboldt Close to coast north of Usal. Comment
  CAS-BOT-BC52869  Ceanothus velutinus J. W. Tilden 1947-8-25 s.n. Humboldt Near summit of Red Mountain above Klamath River opposite Shelton Butte 822 Comment
  UC582507  Centaurea X moncktonii Joseph P. Tracy 1933-8-22 12973 Humboldt at Eureka Eureka 60 Comment
  SEINET11860706  Centaurea cyanus J. P. Tracy 1948-8-8 18097 Humboldt halfway between Bridgeville & head of S. Yager Comment
  UC906756  Centaurium muehlenbergii Joseph P. Tracy 1941-9-7 17013 Humboldt near Blue Lake; Mad River 15 Comment
  UCR123952  Centaurium muehlenbergii George K. Helmkamp, E. A. Helmkamp 2001-7-8 6964 Humboldt North coast hills., Calif. Hwy 36, 2.2 mi west of Dinsmore 732 Comment
  JEPS46931  Centaurium muehlenbergii Joseph P. Tracy 1931-8-9 9610 Humboldt Blue Slide Northern Coast Ranges, Van Duzen River 91 Comment
  RSA391522  Centaurium muehlenbergii M. V. Hood 1940-08 s.n. Humboldt Eel River - near Redway. 457 Comment
  UC176957  Centunculus minimus Joseph P. Tracy 1912-7-21 3782 Humboldt Northern Coast Region, Alton Alton; Northern Coast Region, Alton 30 Comment
  HSC70729  Cephalanthera austiniae Gail Newton 1980-7-14 1525 Humboldt Near Deadman Ridge 1097 Comment
  HSC98795  Cephalanthera austiniae Cara Witte 2008-7-3 828 Humboldt Intersection of Friday Ridge Rd (6N08) and 5N39 1512 Comment
  HSC58133  Cerastium arvense Gilbert Muth 1979-8-1 12138 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1677 Comment
  SBBG2066  Cerastium arvense H. and M. Dearing 1933-5-16 236 Humboldt near Garberville Comment
  UC1198320  Cerastium glomeratum Joseph P. Tracy 1911-7-5 3308 Humboldt near mouth Willow Creek; Northern Coast Ranges, Willow Creek (tributary of Trinity R. 182 Comment
  HSC89494  Cerastium glomeratum P. A. Daly 1986-2-28 56 Humboldt Trinidad Head, along trail 61 Comment
  HSC95646  Cerastium glomeratum Andrea Pickart 2002-4-3 33 Humboldt Samoa Dunes, Eureka airport, 'Superbowl 15 Comment
  UC673250  Cercis occidentalis Lincoln Constance and Reed C. Rollins 1942-5-12 2895 Humboldt bluffs at junction of Klamath River and Salmon River (1 mi s of Somes Bar); Klamath-Siskiyou Region 152 Comment
  HSC36776  Cercocarpus montanus var. glaber Brent Whitely 1975-7-10 154 Humboldt 198 Comment
  UC34637  Chaenactis glabriuscula var. heterocarpha Chesnut and Drew 1888-7-23 Humboldt Comment
  CAS-BOT-BC85653  Chamaecyparis lawsoniana Joseph P. Tracy 1927-3-27 7864 Humboldt Willow Creek Canyon 762 Comment
  HSC72829  Chamaecyparis lawsoniana Gail Newton 1980-6-16 195 Humboldt Near Onion Mtn. 1280 Comment
  SBBG11071  Chamaecyparis lawsoniana D. E. Breedlove 1961-7-4 646 Humboldt 7 mi W of Willow Crk on US Hwy 299 521 Comment
  HSC1196  Chamaecyparis lawsoniana Curt M. Johnson 1966-3-11 115 Humboldt Flood plain of Bull Creek at Bull Creek 152 Comment
  HSC69753  Chamaesyce maculata Thomas W. Nelson 1977-10-10 3754 Humboldt Jct. of Fairway Dr. and Lundbar Place, Eureka Comment
  UC535755  Chamaesyce serpyllifolia Eleanor Armstrong 1934-8-6 1126 Humboldt Richardson Grove 121 Comment
  UC144090  Chamerion angustifolium subsp. circumvagum J. P. Tracy 1903-8-9 1938 Humboldt Immediate vicinity of Eureka 0 Comment
  UCD103651  Chamerion angustifolium subsp. circumvagum D. C. Hager 1957-7-25 188 Humboldt 7.5 miles ENE of Hoopa, Mill Creek cutover. 1402 Comment
  HSC55119  Cheilanthes gracillima Gilbert Muth 1979-8-1 11897 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1877 Comment
  RSA685760  Cheilanthes gracillima Henry M. Pollard 1948-7-24 s.n. Humboldt Near Orleans. Comment
  HSC99137  Cheilanthes gracillima C. Witte 2008-10-18 1062 Humboldt Horse Mountain Botanical Area. Approxmiately 1 mile north of Horse Mountain Communication Towers. Forest Service Road 6N66 1456 Comment
  HSC995  Cheilanthes gracillima J. Wendell Howe 1934-7-21 1314 Humboldt Near Cold Spring, Horse Mtn. Comment
  UCR123948  Chenopodium botrys George K. Helmkamp, E. A. Helmkamp 2001-7-8 6989 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
  RSA44501  Chenopodium botrys H. M. Pollard 1947-8-31 s.n. Humboldt Klamath River near Wilson Creek, Orleans region. Comment
  RSA44503  Chenopodium pumilio H. M. Pollard 1947-8-31 s.n. Humboldt Orleans Hotel grounds, Orleans. Comment
  HSC99618  Chimaphila menziesii Jimerson, J. Pageau 1979-6-13 755 Humboldt Near Slate Creek Butte, close to the town of Orleans 549 Comment
  RSA43898  Chimaphila menziesii H. M. Pollard 1948-7-31 s.n. Humboldt Orleans Mt. 1524 Comment
  UC1197596  Chimaphila menziesii Joseph P. Tracy 1911-7-7 3439 Humboldt ridge n. Willow Creek (between Willow & Campbell Creeks, Brannan Mt., near summit); Northern Coast Ranges, Brannan Mt. 1219 Comment
  CAS-BOT-BC451382  Chimaphila menziesii Doris K. Kildale 1926-6-27 2188 Humboldt Sweasey Lake, McClellen Mountain 822 Comment
  HSC54505  Chimaphila umbellata Overton, Butler 1979-7-23 9403 Humboldt Near Horse Mtn., close to the town of Willow Creek 1478 Comment
  JEPS58861  Chimaphila umbellata Chesnut and Drew 1888-7-8 Humboldt Kneeland Prairie Comment
  CHSC20344  Chloris truncata D. E. Anderson 1970-1-20 Humboldt In the Humboldt State College Greenhouses. Seed source: Australia. Comment
  POM87953  Chrysanthemum leucanthemum L. R. Abrams, R. C. Bacigalupi 1922-6-25 8262 Humboldt Between Trinidad and Big Lagoon Comment
  SEINET11842152  Chrysanthemum leucanthemum Unknown 1981-1 8 Humboldt ca 4 mi NE of Arcata, 200 yds N of Hwy 299 61 Comment
  CAS-BOT-BC420345  Chrysosplenium glechomifolium Greg de Nevers 2001-4-19 12259 Humboldt Prarie Creek, Redwoods State Park 91 Comment
  JEPS46999  Cicendia quadrangularis Joseph P. Tracy 1935-5-25 13902 Humboldt Dobbyn Creek 152 Comment
  UC164825  Cichorium intybus Joseph P. Tracy 1907-6-20 2572 Humboldt Northern Coast Region; vicinity of Eureka Comment
  HSC36303  Cicuta douglasii C. Cornish 1973-10-10 1 Humboldt Shore of Freshwater Lagoon Comment
  HSC95389  Cicuta douglasii Andrea Pickart 2002-7-19 187 Humboldt Arcata Marsh in Log Pond 10 Comment
  BLMAR594  Circaea alpina subsp. pacifica Jennifer Wheeler 2010-7-28 594 Humboldt Lacks Creek, off Pine Ridge Road under shady old growth Douglas-fir 975 Comment
  HSC100575  Circaea pacifica Carl C. Marshall Jul 1886 348 Humboldt Xavier's Place, Bald Hills. Comment
  HSC5373  Cirsium arvense Paul Shields 1955-9-29 Humboldt 1/2 mi. S Fernbridge Comment
  POM289624  Cirsium arvense Lyman Benson 1928-7-12 482 Humboldt Weott Ranger Station, Seaward N. Coast Mt. Range, South Fork Eel River Watershed. 61 Comment
  SEINET200852  Cirsium edule J. C. Fario Jr 1940-6-14 sn Humboldt Bear River Ridge 610 Comment
  JEPS59296  Cirsium occidentale var. candidissimum W. L. Jepson 1932-8-8 16486 Humboldt Bull Creek Grasshopper Peak, Bull Creek 1005 Comment
Read comments
Jan 17 2008
  UC204833  Cirsium occidentale var. venustum Joseph P. Tracy 1918-7-3 4988 Humboldt Wilder Ridge Northern Coast Ranges, Wilder Ridge 762 Comment
  CAS-BOT-BC288714  Cirsium remotifolium Peter H. Raven; R. Snow 1958-7-21 13654 Humboldt 7.2 miles NW of Capetown on road to Ferndale Comment
  CAS-BOT-BC288722  Cirsium remotifolium Joseph P. Tracy 1934-7-6 13659 Humboldt Kneeland Prairie 762 Comment
  CDA1546  Cirsium remotifolium T. C. Fuller 1958-6-17 600 -58 Humboldt Wildcat Ridge near Bunker Hill. (Mattole Rd., S of Ferndale). 0 Comment
  RSA0070877  Cirsium remotifolium Joseph P. Tracy 1949-8-11 18472 Humboldt East of headwaters of Redwood Creek, beginning where the electric power line crosses, and working south. Kinsey Ridge, south from Grouse Mt., 2 to 6 miles. 1280 Comment
  SBBG25858  Cirsium vulgare D. Myrick 1966-8-16 1579 Humboldt Prairie Crk Redwoods State Park 152 Comment
  UC1193154  Cirsium vulgare G. W. Tourtillott 1950-7-27 25 Humboldt 1 mi w of Dobbin Creek Ranch; Quad. 29D1 304 Comment
  UC1222855  Clarkia amoena Joseph P. Tracy 1950-6-8 18751 Humboldt s of point Cape Mendocino; Devil's Gate 3 Comment
  UC204004  Clarkia amoena subsp. amoena Joseph P. Tracy 1918-7-3 4989 Humboldt Wilder Ridge Northern Coast Ranges, Kings Peak Range 762 Comment
  UC583076  Clarkia amoena subsp. amoena P. A. Munz 1936-8-10 14339 Humboldt 15 mi e Bridgeville; Little Van Duzen River Comment
  LA206050  Clarkia concinna H. Lewis; M. Lewis 1947-6-13 419 Humboldt Hwy 36, 1.9 mi W of Van Duzen River Bridge Comment
  UC1537616  Clarkia concinna subsp. concinna Gordon H. True Jr. 1936-5-11 455 Humboldt w Miranda; Salmon Creek 457 Comment
  CAS-BOT-BC172510  Clarkia purpurea subsp. quadrivulnera Joseph P. Tracy 1932-6-26 10264 Humboldt Valley of South Yager Creek 762 Comment
  UC183695  Clarkia purpurea subsp. quadrivulnera Joseph P. Tracy 1912-7-26 3831 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  CAS-BOT-BC172393  Clarkia purpurea subsp. viminea Henry M. Pollard 1947-8-23 s.n. Humboldt Field west of Orleans Comment
  RSA297004  Clarkia purpurea subsp. viminea Lincoln Constance 1934-5-23 619 Humboldt South Fork Eel River: upper end of Look Prairie 366 Comment
  UC1198505  Clarkia rhomboidea Joseph P. Tracy 1913-6-20 4214 Humboldt opposite Buck Mountain (Dinsmore's Ranch); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  HSC71813  Claytonia exigua subsp. exigua Thomas W. Nelson, Jane P. Nelson 1980-6-27 5954 Humboldt Six Rivers National Forest, saddle between two peaks E of Mt. Lassic 1768 Comment
  HSC99412  Claytonia parviflora K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-6-28 61 Humboldt Near North Trinity Mtn, 11. 9 mi east of Hoopa on Big Hill Rd (8N01), at Box Camp, Six Rivers National Forest. 1372 Comment
  HSC47613  Claytonia perfoliata J. P. Smith 1977-4-23 9029 Humboldt 2.5 mi. S of Shelter Cove Rd., S Fork of Bear Creek at Wailaki Campground. 561 Comment
  HSC17681  Claytonia perfoliata S. R. Johnson 1965-3-28 24 Humboldt 1 mi. N of Luffenholtz Beach Comment
  HSC79435  Claytonia perfoliata subsp. mexicana Kenneth Clark 1981-4-5 1227 Humboldt Dead Man's Gulch 69 Comment
  UCD100848  Claytonia rubra subsp. depressa Linda M. Barker 1976-4-13 1378 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  HSC17701  Claytonia rubra subsp. depressa D. B. Mitchell 1965-3-13 210 Humboldt 0.5 mi. N of US Coast Guard Station on Samoa Rd. Comment
  HSC17740  Claytonia rubra subsp. rubra H. E. Parks, J. P. Tracy 1930-5-25 876 Humboldt Laribee Valley 762 Comment
  UC203565  Claytonia rubra subsp. rubra Joseph P. Tracy 1918-4-14 4871 Humboldt Fish's Mill Creek; Northern Coast Ranges, Dows Prairie 60 Comment
  HSC71826  Claytonia saxosa Thomas W. Nelson, Jane P. Nelson 1980-6-27 5957 Humboldt Saddle between Mt. Lassic and peak to E 1677 Comment
  HSC82185  Claytonia saxosa Thomas W. Nelson 1977-6-15 3442 Humboldt Along old road to ski area 1372 Comment
  HSC48843  Claytonia sibirica Brad Klipfel 1973-7-15 199 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC71792  Claytonia sibirica Gail Newton 1980-6-16 176 Humboldt Near Monks Camp. 1097 Comment
  HSC76598  Claytonia sibirica Teresa Prendusi 1981-7-24 474 Humboldt Near Whiteys Peak 1585 Comment
  SEINET198592  Claytonia sibirica H. E. Parks 01421 Humboldt Spruce Cove Trinidad Comment
  HSC98773  Clintonia uniflora Cara Witte 2008-7-7 840 Humboldt National Forest Road 5N10. 2 miles south of intersection with Friday Ridge Road. Near waterhole sign. 1224 Comment
  CAS-BOT-BC499964  Clintonia uniflora Mrs. H. C. Cantelow 1939-6-5 2446 Humboldt About 1 1/2 miles west of Dinsmores Comment
  UC30060  Clintonia uniflora Mrs. M. H. Manning Humboldt near Hupa (Redwood Trail); Redwood Trail Comment
  UC1196765  Collinsia grandiflora Joseph P. Tracy 1922-5-29 6077 Humboldt South Yager Creek Valley; North Coast Ranges; South Yager Creek Valley 762 Comment
  UC168981  Collinsia grandiflora Harley P. Chandler 1901-6-14 1500 Humboldt between Orleans Somes Bar Klamath River; , North Coast Ranges 426 Comment
  JEPS25064  Collinsia heterophylla Joseph P. Tracy 1948-6-13 18049 Humboldt near Harris 609 Comment
  UC54919  Collinsia linearis Mrs. M. H. Manning 1901-1 Humboldt Hupa Valley Comment
  UC1222822  Collinsia linearis Joseph P. Tracy 1951-6-16 19475 Humboldt Summit of Siskiyous at crossing of the Takilma-Happy Camp Road near State Line Summit of Siskiyous Comment
  HSC102110  Collinsia parviflora M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 1013 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  HSC58045  Collinsia rattanii Gilbert Muth 1979-8-1 11904 Humboldt Near Mill Creek Lakes, close to Hoopa 1692 Comment
  RSA0117231  Collinsia rattanii Volney Rattan 1903-1 1878 Humboldt Humboldt. Comment
  JEPS26356  Collinsia sparsiflora var. sparsiflora Joseph P. Tracy 1916-5-2 4685 Humboldt garden Eureka; North Coast Ranges 762 Comment
  JEPS6323  Collinsia sparsiflora var. sparsiflora Joseph P. Tracy 1932-5-10 9932 Humboldt Beaver River Ridge; North Coast Ranges 609 Comment
  HSC32261  Collomia heterophylla J. O. Sawyer 1970-6-24 2250 Humboldt S of Mill Creek Gap, FS Rd. 10N02 1433 Comment
  UC534985  Collomia heterophylla Harold E. Parks May 1933 1152 Humboldt Spruce Cove Trinidad 76 Comment
  HSC16921  Collomia heterophylla D. E. Anderson 1965-5-15 3699 Humboldt 5 mi. N of Hoopa on Bald Hills Rd. 198 Comment
  UC146175  Collomia heterophylla Joseph P. Tracy 1908-6-7 2608 Humboldt hillside on river at mouth of Maple Creek; Northern Coast Ranges, Mad River 152 Comment
  UC582686  Collomia heterophylla Joseph P. Tracy 1937-5-17 15296 Humboldt Willow Creek Trinity River Valley 152 Comment
  UC908768  Collomia heterophylla P. B. Kennedy 1929-6-14 Humboldt California Barrel Company Range Arcata Comment
  SEINET12278705  Collomia tinctoria H. P. Chandler 1901-1 1475 Humboldt Klamath River 427 Comment
  HSC32324  Collomia tracyi D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5663 Humboldt Senteney Rock, a large barren Franciscan Rock along Swayback Ridge. Comment
  UC179930  Conium maculatum Joseph P. Tracy 1914-8-23 4593 Humboldt roadside at Falk's Mill (S. Fork Elk R.); Northern Coast Region, Humboldt Bay Comment
  UC1199443  Conyza floribunda Joseph P. Tracy 1929-10-13 8679 Humboldt Carlotta 60 Comment
  UC1196210  Coptis laciniata Joseph P. Tracy 1923-4-15 6194 Humboldt Northern Coast Ranges, Bald Mountain, near the Bald Mt. House Bald Mountain; Northern Coast Ranges, Bald Mountain 914 Comment
  UC673153  Coptis laciniata Lincoln Constance, Reed C. Rollins 1942-5-11 2868 Humboldt 3 mi w of East Fork Willow Creek (North Coast Ranges); North Coast Ranges Comment
  UC429111  Corallorhiza maculata P. E. Goddard 1906-6 685 Humboldt Blocksburg Comment
  RSA46849  Corallorhiza maculata Doris K. Kildale 1927-7-10 3733 Humboldt Gans Prairie, Bald Hills. Comment
  HSC54018  Corallorhiza mertensiana Griswold, Butler 1979-7-12 7162 Humboldt Near Groves Prairie, close to the town of Willow Creek. 1256 Comment
  BLMAR311  Cordylanthus maritimus subsp. palustris Jennifer Anthony-Wheeler 2002-7-1 311 Humboldt South Spit 6 Comment
  HSC95093  Cordylanthus maritimus subsp. palustris Andrea Pickart 2002-6-27 123 Humboldt Mad River Slough and Dunes, N of parking area at N end of access road. 0 Comment
  UC1191855  Cordylanthus maritimus subsp. palustris Malcolm A. Nobs and S. Galen Smith 1949-8-3 1200 Humboldt ca 2 mi n Eureka (marshes bordering bay); Humboldt Bay Comment
  HSC41586  Cordylanthus tenuis subsp. viscidus Thomas W. Nelson, Jane P. Nelson 1977-9-3 3718 Humboldt Along ridge between Bear Creek and Blanket Creek 1494 Comment
  CAS-BOT-BC101145  Corethrogyne filaginifolia Joseph P. Tracy 1936-8-17 15157 Humboldt Arcata Bottom 15 Comment
  UC1223037  Corethrogyne filaginifolia J. P. Tracy 1950-6-18 18764 Humboldt 1 mi w of town Petrolia Comment
  UC1223039  Corethrogyne filaginifolia Joseph P. Tracy 1947-6-8 17705 Humboldt 5 mi e of town old Strong's District School House; Carlotta 60 Comment
  UC581783  Corethrogyne filaginifolia Joseph P. Tracy 1936-7-10 15046 Humboldt vicinity of Carlotta 30 Comment
  CAS-BOT-BC212019  Cornus nuttallii Carl B. Wolf 1927-8-28 1165 Humboldt In the valley of the Hoopa Indian Reservation. Comment
  HSC60034  Cornus nuttallii M. A. Baker 1978-5-6 467 Humboldt Junction of Bald Hills Rd. with French Camp Rd. Comment
  HSC6415  Cornus nuttallii Lincoln Constance 1934-6-2 789 Humboldt S Fork Eel River, Bull Creek, 0.5 mi. W of mouth. Comment
  RSA15577  Cornus nuttallii C. B. Wolf 1927-8-28 1165 Humboldt In the valley of the Hoopa Indian Reservation. Comment
  UC249591  Cornus sessilis Joseph P. Tracy 1921-8-21 5945 Humboldt Three Creeks Northern Coast Ranges, Three Creeks 670 Comment
  JEPS58666  Corylus californica Lincoln Constance 1934-5-24 636 Humboldt bordering lower Look Prairie on e side, South Fork Eel River, Bull Creek Region South Fork Eel River; Bull Creek Region, South Fork Eel River 121 Comment
  UC1225940  Corylus californica Joseph P. Tracy 1946-8-25 17639 Humboldt Table Bluff, N slope; along Hookton road 9 Comment
  CAS-BOT-BC180309  Corylus cornuta subsp. californica L. B. Kildale 1928-7-1 5311 Humboldt French Camp in Orick - Martin's Ferry road Comment
  OBI36371  Corylus cornuta subsp. californica David J. Keil 1983-7-1 17269 Humboldt Ca. 13 mi W of jctn US 101 along Bull Crk Flats Rd Comment
  HSC104408  Corylus cornuta subsp. californica Adam N. Canter 2017-4-1 5 Humboldt Eureka, Fort Humboldt State Historic Park, west-facing bluffs along east side of Hwy. 101 Comment
  RSA134173  Corylus cornuta var. californica P. C. Everett, E. K. Balls 1959-10-24 23956 Humboldt 4.7 miles S from Bluff Creek, Hwy 96 from Orleans to Weitchpec. 122 Comment
  RSA173975  Corylus cornuta var. californica R. F. Thorne 1957-9-2 19003 Humboldt Eel River. Burlington State Park, just S of Weott. Comment
  SEINET3817862  Cotula coronopifolia Steve R. Johnson 1965-3-12 1 Humboldt 1 mile north of luffenholtz beach Comment
  UC722135  Cotula coronopifolia C. L. Hitchcock and J. S. Martin 1939-7-14 5434 Humboldt On cliff above pier Shelter Cove Comment
  HSC5426  Cotula coronopifolia R. Spellenberg 1964-6-15 412 Humboldt Along egde of Humboldt Bay, on the south side of Arcata Comment
  UCD130911  Cotula coronopifolia Malcolm A. Nobs; S. Galen Smith 1949-8-3 1163 Humboldt Eel River Valley, 1 mile south of Fields Landing. Comment
  SEINET13729303  Crassula connata var. connata Unknown 1925-5-17 6981 Humboldt Plants of Northern Coast Ranges of California HUMBOLDT COUNTY Oopen bare ground. TRINITY RIVER VALLEY, NEAR THE SOUTH FORK Altitude 600 feet. Comment
  UC1198825  Crassula connata var. subsimplex Joseph P. Tracy 1919-4-27 5128 Humboldt sand dunes of Ocean Beach at Humboldt Bay; Northern Coast Region, , Ocean Beach Comment
  HSC104401  Crataegus gaylussacia Jim McIntosh 2012-5-22 Humboldt Klamath Mountains; southern Siskiyou Mtns., adjacent to north side of State Route 169 at Milepost 22.09; 200 ft. above Klamath River. 96 Comment
  JEPS87029  Crepis capillaris Dean W. Taylor 1991-9-15 12288 Humboldt along Hwy 101 near mouth of Tom Creek; North Coast Ranges, Big Lagoon Comment
  UC129417  Crepis capillaris Joseph Burtt Davy and Walter C. Blasdale 1899-6-15 5537 B Humboldt near Scotia Comment
  UCSB30599  Crepis capillaris Edwards, David 1974-7-13 Humboldt SW. of intersection of Fickle Hill Rd. and Hill St., ca. 1/3 mi. E. of U.S. 101, Arcata 36 Comment
  HSC98096  Crepis pleurocarpa Cara Witte 2007-6-20 310 Humboldt Forest Service Road 4N32. 1 mile south of intersection with 4N32E. 1386 Comment
  UC31346  Crocidium multicaule C. C. Marshall 1888-1 Humboldt Comment
  HSC62776  Crocus speciosus M. Dean Griswold Jr. 1979-4-28 34 Humboldt W side of old Hwy. 101 Comment
  POM174073  Cryptantha flaccida Joseph P. Tracy 1918-7-6 5047 Humboldt South Fork of Eel River near the Humboldt-Mendocino County Line 152 Comment
  UC175774  Cryptantha intermedia Mrs. M. H. Manning 1900-1 Humboldt Hupa Valley Comment
  HSC73718  Cryptantha torreyana M. A. Baker 1980-7-15 2976 Humboldt Near Whiting Ridge. 1341 Comment
  UC1239649  Cryptantha torreyana Harold E. Parks and Joseph P. Tracy 1934-6-27 11058 Humboldt Grouse Mt. 1432 Comment
  UC562671  Cuscuta californica Joseph P. Tracy Jul 16 1930-Jul 19 1930 8912 Humboldt near McKay Camp; Northern Coast Ranges, South Fork Mountain 1676 Comment
  HSC57637  Cuscuta occidentalis G. L. Clifton, Griswold 1979-7-25 10796 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1814 Comment
  UC203976  Cuscuta suaveolens Joseph P. Tracy 1918-9-29 5113 Humboldt 8 mi above mouth of the South Fork of Eel River (Myers Ranch); Northern Coast Ranges, South Fork of Eel River 60 Comment
  UC902067  Cuscuta suksdorfii Joseph P. Tracy 1949-8-4 18430 Humboldt near Box Camp; Trinity Summit 1524 Comment
  HSC3641  Cynoglossum grande A. H. Teshima 1963-3-10 5 Humboldt Moonstone Beach area Comment
  HSC82110  Cynoglossum grande Thomas W. Nelson, Jane P. Nelson 1980-5-25 5251 Humboldt Along road from Dinsmore to Anderson Crossing, McKeown Ranch Rd. 100 m N of junction of road to Hindley Cabin 823 Comment
  UC1222264  Cynoglossum grande Joseph P. Tracy 1946-6-23 17592 Humboldt near the McBride place at s.e. end Kneeland Prairie 762 Comment
  UC54747  Cynoglossum grande Joseph Burtt Davy and Walter C. Blasdale 1899-6-11 5428 Humboldt between Hubbard's Station and Elk Prairie; North Coast Ranges Comment
  HSC45506  Cynoglossum grande M. Alcasas 1978-4-7 5 Humboldt Freshwater Rd. cut-out 75 yds. S of junction with Barry Rd. 854 Comment
  SEINET200580  Cynoglossum occidentale J. P. Tracy 1930-7-10 8871 Humboldt Brannan Mtn 1219 Comment
  SACT000843  Cynosurus cristatus Malcolm Nobs, S. Smith 1949-8-3 Humboldt Marsh and bog land at the southern outskirts of Eureka. Comment
  HSC73571  Cynosurus echinatus Gail Newton 1980-7-14 1508 Humboldt Near Last Chance Ridge. 1219 Comment
  HSC37996  Cyperus eragrostis Peter Sorensen 1976-6-19 Humboldt Woodley Island Comment
  HSC45552  Cyperus eragrostis J. P. Smith 1971-10-9 4990 Humboldt Mad River above the Fish Hatchery. Comment
  HSC75505  Cyperus eragrostis Melinda F. Denton 1981-7-3 4253 Humboldt On Hwy. 36, 32 mi. E of Alton, 17 mi. W of Van Duzen River Rd. 610 Comment
  CAS-BOT-BC70541  Cystopteris fragilis Doris K. Kildale 1926-5-2 1880 Humboldt Willow Creek Flat - Trinity River tributary 152 Comment
  CAS-BOT-BC201008  Cytisus scoparius Henry M. Pollard 1947-8-26 s.n. Humboldt Near Orleans Comment
  SDSU10150  Cytisus scoparius Leslie Hickson 1990-4-15 15 IV90C Humboldt Oak Street across the road from the Freshwater park entrance. Eureka. Comment
  SEINET8477238  Cytisus scoparius D. Taylor 2011-5-4 21114 Humboldt Alderpoint Road in the vicinity of snowline fox farm (Larabee Valley 7 1/2 USGA quadrangle placename), vicinity of the road crossing of Knack Creek 341 Comment
  HSC14664  Cytisus scoparius var. andreanus W. F. Nickel 1965-5-17 Humboldt 1/4 mi. E of Arcata on road to Arcata Reservoir, near Jolly Giant Parking Lot. Comment
  HSC98780  Cytisus scoparius var. scoparius Cara Witte 2008-6-27 768 Humboldt Approximately 1/2 mile north of White Oak Opening on National Forest 1. 1242 Comment
  HSC9530  Dactylis glomerata R. D. Zortman 1963-4-14 30 Humboldt 5.0 mi. NE of Arcata, off Warren Creek Road. 91 Comment
  BLMAR28  Danthonia californica Brad Barr June, 1982 28 Humboldt King range, near shearing shed at couskie E. facing slope Comment
  HSC72622  Danthonia californica J. P. Smith 1977-7-3 9231 Humboldt On Forest Service Road 13N01 to Fish Lake, 3.5 mi. from its junction with Highway 36 488 Comment
  HSC9549  Danthonia californica J. P. Tracy 1930-7-10 8860 Humboldt Brannan Mountain. 1220 Comment
  UC181243  Danthonia californica var. americana Joseph P. Tracy 1913-6-13 4098 Humboldt opposite Buck Mountain; Northern Coast Ranges, Valley of Van Duzen River, Dinsmore's 762 Comment
  UC526687  Danthonia californica var. americana Joseph P. Tracy 1932-7-10 10392 Humboldt Corral Prairie Klamath Mountains, Trinity Summit 1524 Comment
  UC1103251  Danthonia unispicata H. E. Parks and Joseph P. Tracy 1934-6-14 11028 Humboldt Horse Mt. Northern Coast Ranges 1371 Comment
  HSC20253  Darmera peltata D. E. Anderson 1962-5-1 2199 Humboldt 1 mi. W of Hoopa Comment
  HSC20251  Darmera peltata C. F. Hudson 1964-5-7 6436 Humboldt 2 mi. up river from the mouth of Mad River, S bank 1 Comment
  UC1198471  Datisca glomerata Joseph P. Tracy 1912-8-3 3972 Humboldt in Valley of Van Duzen River (opposite Buck Mountain, Dinsmore's Ranch); Northern Coast Ranges, Dinsmore's Ranch 762 Comment
  CDA38308  Daucus pusillus T. C. Fuller 1958-6-17 1904 Humboldt Zanone Ranch, Cape Mendocino. 0 Comment
  UC1197355  Daucus pusillus Joseph P. Tracy 1918-7-3 4996 Humboldt Shelter Cove Northern Coast Ranges, Shelter Cove 15 Comment
  HSC96953  Delphinium decorum subsp. tracyi Ryoko Ito, Shauna McDonald 2007-6-4 1 Humboldt Coldspring Camp, 7.4 mi. above Hwy. 299 off NF1 on USFS Rd. 5N27 1390 Comment
  HSC24965  Delphinium hesperium R. Spellenberg 1965-6-14 1139 Humboldt 13 mi. W of Willow Creek along Hwy. 299 Comment
  RSA46895  Delphinium nudicaule Doris K. Kildale 1927-5-15 3164 Humboldt Petrolia Comment
  HSC45097  Delphinium nudicaule R. Sutherland 1978-4-24 13 .24478 Humboldt Kinsey Ridge 311 Comment
  HSC95789  Delphinium nudicaule Kevin Thomas 2004-3-28 9 Humboldt Horse Linto Creek Campground Comment
  OBI35868  Delphinium trolliifolium David J. Keil 1983-7-2 17344 Humboldt 21 mi S of SR 299 along Titlow Hill Rd, SW of Willow Crk Comment
  UCD131743  Delphinium trolliifolium Collector unknown 2013-4-23 s.n. Humboldt Near Ferndale. 914 Comment
  CAS-BOT-BC121969  Delphinium trolliifolium Carl B. Wolf 1937-6-14 8827 Humboldt 1 1/2 mi. N of Kneeland Prairie 822 Comment
  POM299320  Delphinium trolliifolium Lester Rowntree 1938-6-4 s.n. Humboldt Stone Lagoon near Orick Comment
  UC1225745  Delphinium trolliifolium Joseph P. Tracy 1946-6-15 17561 Humboldt lower slopes of mt Horse Mountain 1066 Comment
  HSC9586  Deschampsia cespitosa G. N. Bos 1965-5-15 255 Humboldt 8 mi. W of Berry Summit, along Hwy. 299 762 Comment
  UCD61369  Deschampsia cespitosa A. H. Murphy 1951-5-29 48 Humboldt About 1 mile northeast of Ocean House, along County Road, Cape Mendocino Area. Comment
  UC1100295  Deschampsia cespitosa subsp. beringensis Malcolm A. Nobs and S. Galen Smith 1949-8-3 1167 Humboldt 1 mi. s. Fields Landing; Eel R. Valley Comment
  CAS-BOT-BC194297  Deschampsia cespitosa subsp. cespitosa Malcom A. Nobs; S. Galen Smith 1949-8-3 1167 Humboldt Borders of irrigation ditch, 1 mile south of Fields Landing, Eel River Valley Comment
  CAS-BOT-BC194298  Deschampsia cespitosa subsp. cespitosa David D. Keck 1938-8-5 4773 Humboldt Big Lagoon Comment
  CAS-BOT-BC192704  Deschampsia danthonioides Doris K. Kildale 1928-7-1 5309 a Humboldt French Camp - Bald Hills, Orick - Martins Ferry Road Comment
  BLMAR267  Deschampsia elongata Jennifer Anthony-Wheeler 1999-6-16 267 Humboldt Headwaters Forest Reserve, growing near beginning of wildlife rd 524 Comment
  HSC103072  Deschampsia elongata Sydney Carothers 2014-6-12 13 Humboldt Six Rivers National Forest, Lassics Botanical Area, Red Lassic. Near upper pond and rustic camp site. 1706 Comment
  UC187265  Deschampsia elongata Joseph P. Tracy 1908-6 2710 Humboldt opposite Buck Mt. Buck Mt.; Northern Coast Ranges, valley of Van Duzen R. 762 Comment
  HSC56461  Dianthus armeria Griswold, Butler 1979-7-12 7249 Humboldt Near Cedar Creek, close to the town of Willow Creek 1158 Comment
  RSA433571  Dicentra formosa subsp. formosa Maude Minthorn s.n. Humboldt Ferndale. Comment
  HSC65838  Dicentra formosa subsp. oregana Gail Newton 1980-6-16 182 Humboldt Near Onion Mtn. 204 Comment
  CAS-BOT-BC483662  Dichelostemma capitatum Alice Eastwood; John Thomas Howell 1937-6-23 4787 Humboldt Near Dinsmore's Comment
  RSA756869  Dichelostemma capitatum subsp. capitatum Barbara Ertter, Thomas J. Delendick 1987-5-16 6927 Humboldt Vista Point just W of Berry Summit on Highway 299, ca. 15 air miles E of Arcata. 915 Comment
  HSC44758  Dichelostemma congestum Maralyn O'Meara 1972-6-8 81 Humboldt Along Bald Hills Rd, 16.4 mi. E of junction with Hwy. 101 Comment
  SEINET6879154  Dichelostemma congestum Wanda P. Vestal, A. G. Vestal 1937-6-23 s.n. Humboldt Saddle near east end of Bald Hills, southeast of Orick. Comment
  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
  HSC43845  Dichelostemma ida-maia Maralyn O'Meara 1974-7-17 554 Humboldt Kneeland Comment
  POM208998  Dichelostemma ida-maia Lincoln Constance 1934-5-23 604 Humboldt Look Prairie, Bull Creek Watershed, Humboldt Redwood Park 366 Comment
  UC1198185  Dichelostemma ida-maia Joseph P. Tracy 1934-7-22 13489 Humboldt road from Iaqua to Bridgeville (at crossing of North Yager Creek); North Yager Creek 396 Comment
  UC198610  Digitalis purpurea Joseph P. Tracy 1917-5-30 4790 Humboldt Dows Prairie Comment
  CAS-BOT-BC208999  Digitaria sanguinalis Henry M. Pollard 1948-7-27 s.n. Humboldt Orleans Comment
  CAS-BOT-BC150347  Diplacus aurantiacus Elmer I. Applegate 1923-9-12 3988 Humboldt Stone Lagoon, below Orick Comment
  CAS-BOT-BC150348  Diplacus aurantiacus L. R. Abrams; R. Bacigalupi 1922-6-25 8291 Humboldt North of Big Lagoon Comment
  CAS-BOT-BC150350  Diplacus aurantiacus L. R. Abrams 1916-7-18 6072 Humboldt Fortuna Comment
  SEINET8221173  Diplacus aurantiacus L. R. Abrams 1916-7-18 6072 Humboldt Fortuna. Comment
  POM277212  Disporum hookeri var. hookeri Lyman Benson 1929-7-16 1842 Humboldt Weott Ranger Station. S Fork Eel River. Comment
  UC30078  Disporum smithii Mrs. M. H. Manning 1901-4-1 12 Humboldt near Hupa Comment
  CAS-BOT-BC136196  Dodecatheon alpinum Joseph P. Tracy 1930-7-16 8930 Humboldt South Fork Mountain; in wet meadow at McKay Camp - Northern Coast Ranges 1676 Comment
  HSC17861  Dodecatheon hendersonii R. A. Rasp 1964-4-5 26 Humboldt 5 mi. N of Hoopa on Willow Creek Rd. Comment
  UCSB28097  Dodecatheon hendersonii Phelps, M. 1972-3-18 Humboldt 1.5 mi. from Garberville along Old Briceland Ed., 1,000 yds. north of roadside. 213 Comment
  POM175550  Downingia elegans var. corymbosa F. W. Peirson 1923-7-10 3871 Humboldt About 6 miles N of Garbersville. Comment
  UC168983  Downingia willamettensis Joseph P. Tracy 1911-6-30 3271 Humboldt near Hydesville; Northern Coast Region 60 Comment
  HSC59494  Drosera rotundifolia M. A. Ericksen 1979-4-21 213 Humboldt Big Lagoon County Beach, ca. 90 yards from the Rd. in center of bog. Comment
  RSA273338  Drymocallis glandulosa var. wrangelliana Thomas W. Nelson 1976-5-30 2636 Humboldt McKeown Ranch north of Dinsmore. Comment
  UC1239776  Dryopteris arguta Joseph P. Tracy 1931-1-24 9280 Humboldt Alton; Northern Coast Region 30 Comment
  UCD136407  Dryopteris arguta K. Esau 1934-5-8 s.n. Humboldt Above Fort Seward. 457 Comment
  UCD136409  Dryopteris arguta K. Esau 1934-5-8 s.n. Humboldt Above Fort Seward. 457 Comment
  JEPS35138  Dryopteris expansa Milo S. Baker 1923-7-16 20 Humboldt 4 mi se Eureka Comment
  UC1103628  Dulichium arundinaceum Joseph P. Tracy 1937-8-12 15623 Humboldt Bald Mountain, at Lake Prairie Lake Prairie; Bald Mountain, Lake Prairie 1066 Comment
  HSC98715  Dysphania botrys Cara Witte 2007-8-1 617 Humboldt Friday Ridge Road (Forest Service Road 6N08). 1/4 mile east of intersection with Friday Camp. 1297 Comment
  UC1100261  Echinochloa crus-galli var. crus-galli Malcolm A. Nobs and S. Galen Smith 1949-8-9 1240 Humboldt Town of Blue Lake; s side Comment
  UC526835  Echinochloa muricata var. microstachya Joseph P. Tracy 1930-10-12 9209 Humboldt Eel River on gravel bars Alton to Fortuna; Northern Coast Region, Eel River 15 Comment
  HSC100404  Echinospermum Carl C. Marshall Jun 1888 3 Humboldt Pilot Creek. Comment
  UC666917  Eleocharis bella Joseph P. Tracy 1935-7-27 14299 Humboldt Trinity Summit, McKay Prairie 1584 Comment
  UC213006  Eleocharis bella Joseph P. Tracy 1919-5-31 5180 Humboldt shores of Lack Pond, near Willow Creek Northern Coast Ranges, Trinity River Valley 152 Comment
  CAS-BOT-BC113206  Eleocharis parishii Doris K. Kildale 1927-7-3 3664 Humboldt Willow Creek Flat, swampy outflow from spring. Comment
  POM126088  Eleocharis parvula Joseph P. Tracy 1924-8-3 6744 Humboldt Stone Lagoon Comment
  HSC9695  Elymus condensatus J. Wendell Howe 1253 Humboldt Little River Beach Comment
  CAS-BOT-BC227343  Elymus elymoides Joseph P. Tracy 1935-7-28 14317 Humboldt Trinity Summit. Head of Devil's Hole 1828 Comment
  HSC70479  Elymus glaucus Gail Newton 1980-7-20 1644 Humboldt Near Bell Swamps 1426 Comment
  HSC74458  Elymus glaucus Gail Newton 1980-8-10 2016 Humboldt Near Blake Mtn. 1798 Comment
  RSA129235  Elymus glaucus H. S. Yates 1936-6-17 5705 Humboldt South Fork Pk.; Lower N.W. slope of Buck Mt. 793 Comment
  UCD62294  Elymus glaucus A. H. Murphy 1947-5-12 Humboldt Roadside near Carlotta. Comment
  UC1103200  Elymus glaucus Joseph P. Tracy 1950-8-20 19327 1/2 Humboldt near Slate Creek; Klamath River 121 Comment
  UCD62351  Elymus glaucus subsp. glaucus A. A. Beetle; G. L. Stebbins Jr. 1942-6-3 3484 Humboldt Near Garberville, 1.4 miles on road to Harris. Comment
  HSC98130  Elymus hispidus Cara Witte 2007-6-28 387 Humboldt Forest Service Road 5N10. 1293 Comment
  UC552771  Elymus multisetus H. E. Parks and Joseph P. Tracy 1934-6-27 11049 Humboldt Horse Mt. Northern Coast Ranges 1371 Comment
  UC1040574  Elymus trachycaulus L. T. Burcham 1956-7-19 342 Humboldt Northeast Capetown; along roadside and on adjacent sheep range. 365 Comment
  RSA44304  Epilobium canum subsp. latifolium H. M. Pollard 1946-9-2 s.n. Humboldt Orleans Mts. 1524 Comment
  HSC45595  Epilobium ciliatum subsp. ciliatum Diane L. Reed 1978-5-27 141 Humboldt 0.3 mi. up Bair Rd. from Hwy. 299 Comment
  RSA32869  Epilobium ciliatum subsp. ciliatum A. A. Heller 1923-7-6 13767 Humboldt Humboldt Camp 10 miles south of Dyerville. Comment
  HSC98657  Epilobium densiflorum Cara Witte 2007-7-3 408 Humboldt White Oak Opening. 1242 Comment
  UC144085  Epilobium densiflorum Joseph P. Tracy 1908-6 2850 Humboldt opposite Buck Mountain; Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  HSC16223  Epilobium densiflorum J. P. Tracy 1932-10-12 10872 Humboldt Miranda, along S Fork of Eel River 122 Comment
  UC562502  Epilobium glaberrimum subsp. glaberrimum Joseph P. Tracy 1936-8-7 15102 Humboldt head of Little Hors-Linto Creek Trinity Summit 1524 Comment
  UC1197009  Epilobium hallianum Joseph P. Tracy 1936-6-28 15028 Humboldt Lake Prairie Bald Mountain 1219 Comment
  POM160843  Epilobium hallianum Joseph P. Tracy 1923-5-13 6204 Humboldt North Coast Ranges: Bridgeville. 229 Comment
  HSC55085  Epilobium hornemannii G. L. Clifton, Griswold 1979-7-31 11749 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa. 1845 Comment
  RSA256576  Epilobium minutum D. E. Anderson 1972-6-20 5747 Humboldt Along the Redwood Valley-Hoopa Rd. east of the summit. Comment
  HSC16556  Epilobium septentrionale C. B. Wolf 1927-8-30 1235 Humboldt 2 mi. S of Petrolia on the Matole River near the road crossing the river Comment
  UC249622  Epilobium septentrionale Joseph P. Tracy 1921-10-16 5974 Humboldt mouth of S. Fork Trinity R.; Northern Coast Ranges, S. Fork Trinity R. 152 Comment
  UC667937  Equisetum arvense Joseph P. Tracy 1937-7-2 15391 Humboldt ne of Hawkins Bar Happy Camp Mt.; Trinity Summit Range 1280 Comment
  HSC71087  Equisetum arvense Thomas W. Nelson, Jane Nelson 1977-5-30 3406 Humboldt Back bay of Mad River at Anderson's Ford 640 Comment
  RSA275366  Equisetum hyemale var. affine James Payne Smith, Advanced Plant Taxonomy Class 1971-10-9 4996 Humboldt Mad River above the Fish Hatchery. Comment
  HSC70639  Equisetum telmateia subsp. braunii R. York 1980-5-18 594 Humboldt Near Black Mtn 792 Comment
  SEINET10834153  Equisetum telmateia var. braunii Mary Susan Taylor 1977-8-5 Taylor 1430 Humboldt Abundant around bridge over Eel River, at the turnoff from Hwy 1 to Ferndale, in Fernbridge. 2 Comment
  CAS-BOT-BC291176  Erechtites glomeratus H. E. Parks; S. T. Parks 1937-7-1 24033 Humboldt Spruce Cove, Trinidad 60 Comment
  UC1193151  Ericameria arborescens P. J. Zinke 162 Humboldt 1 mi sw Bear Butte; Quad 29C<l?> 609 Comment
  POM161486  Ericameria greenei Joseph P. Tracy 1919-9-22 5273 Humboldt Trinity Summit 1890 Comment
  CHSC84686  Erigeron aliceae L. P. Janeway 2003-7-26 7924 Humboldt High North Coast Ranges. South side (above) Road 5N04, 0.5 km northeast of the top of Grouse Mountain. 1554 Comment
  SEINET11851472  Erigeron annuus J. P. Tracy 1949-1 18585 Humboldt Eureka Comment
  JEPS41418  Erigeron biolettii W. L. Jepson 1932-8-6 16493 Humboldt Garberville Comment
  UCR51767  Erigeron bloomeri var. nudatus H. E. Parks 1937-1 24- 22 Humboldt North Coast, Spruce Cove, Trinidad 61 Comment
  CAS-BOT-BC296111  Erigeron foliosus var. confinis Joseph P. Tracy 1935-6-23 13967 Humboldt French Camp Ridge 1066 Comment
  HSC57622  Erigeron klamathensis G. L. Clifton, Griswold 1979-7-25 10752 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1814 Comment
  CAS-BOT-BC214589  Erigeron philadelphicus Mrs. E. C. Sutliffe 1927-6-1 s.n. Humboldt Bull Creek Comment
  POM54263  Erigeron philadelphicus H. P. Chandler 1901-06 1402 A Humboldt Klamath River. Comment
  UC581735  Erigeron philadelphicus var. philadelphicus Joseph P. Tracy 1935-5-30 13920 Humboldt near Willow Creek; Trinity River Valley 152 Comment
  UC1199399  Erigeron strigosus var. septentrionalis Joseph P. Tracy 1918-6-23 4959 Humboldt Boynton Prairie Road near the Carroll Place (around Humboldt Bay); North Coast Ranges, Fickle Hill 304 Comment
  CAS-BOT-BC300278  Erigeron strigosus var. strigosus L. R. Abrams 1918-6-16 7174 Humboldt Willow Creek Comment
  HSC43069  Eriogonum latifolium J. P. Smith 1971-10-6 4982 Humboldt End of Murray Rd. in McKinleyville. Comment
  UC14097  Eriogonum luteolum var. luteolum Chesnut and Drew 1888-7-23 Humboldt Hyampon Comment
  HSC17389  Eriogonum luteolum var. luteolum D. E. Anderson 1961-9-30 1857 Humboldt Along dry roadside Comment
  UC672914  Eriogonum luteolum var. luteolum Joseph P. Tracy 1931-9-19 9684 Humboldt Alton Van Duzen River (along Van Duzen River) 30 Comment
  RSA66020  Eriogonum nudum var. auriculatum F. W. Peirson 1923-7-10 4206 Humboldt Garberville. Comment
  UC1198140  Eriogonum nudum var. nudum Joseph P. Tracy 1930-7-4 9929 Humboldt near. on raod from Bull Creek to Mattole Windy Nip Gap 762 Comment
  UC176685  Eriogonum nudum var. oblongifolium Joseph P. Tracy 1912-7-21 3761 Humboldt Alton Norther Coast Ranges, Alton 30 Comment
  CAS-BOT-BC261723  Eriogonum nudum var. oblongifolium Doris K. Kildale 1928-6-24 5272 Humboldt Entrance to Horse Mountain 853 Comment
  JEPS56193  Eriogonum umbellatum var. argus W. L. Jepson 1902-7-25 2119 Humboldt Trinity Summit Comment
  RSA53800  Eriogonum umbellatum var. argus H. M. Pollard 1946-9-2 s.n. Humboldt Orleans Mts. 1524 Comment
  SEINET10919209 Image available Eriogonum umbellatum var. nelsoniorum James L. Reveal 2001-7-18 Reveal 8345 Humboldt Along U.S. Forest Service Road 1 at south end of Whiting Ridge, about 0.5 air miles west-northwest of High Salt Ground and 9.3 air miles west of Hyampom, on serpentine outcrops in an open grassland. T.3N, R5W, sec. 20 NW1/4 of the SE1/4. 1295 Comment
  SEINET10551827  Eriophorum crinigerum Henry N. Bolander 1866-1 Bolander 6475 Humboldt Red Mountain. Comment
  HSC5592  Eriophyllum lanatum D. E. Anderson 1963-3-16 2384 Humboldt Scotia Bluffs Comment
  UC180202  Eriophyllum lanatum var. achilleoides Joseph P. Tracy 1914-7-5 4572 Humboldt between High Prairie and Snow Camp; Northern Coast Ranges, Bald Mountain 1219 Comment
  UC1223130  Eriophyllum lanatum var. achilleoides Joseph P. Tracy 1950-6-15 18790 Humboldt 7 mi n Harris; Jenk's Ranch Comment
  UC165189  Eriophyllum lanatum var. achilleoides Joseph P. Tracy 1908-6-7 2609 Humboldt bluffs on river at mouth of Maple Creek; Northern Coast Ranges, Mad River 152 Comment
  CAS-BOT-BC301181  Eriophyllum lanatum var. arachnoideum Doris K. Kildale 1927-6-25 3541 Humboldt Shelter Cove Comment
  UC302292  Eriophyllum lanatum var. arachnoideum Joseph P. Tracy 1926-6-18 7607 Humboldt Humboldt Hill Northern Coast Region, around Humboldt Bay, Humboldt Hill 152 Comment
  UC673207  Eriophyllum lanatum var. lanceolatum Lincoln Constance and Reed C. Rollins 1942-5-12 2890 Humboldt 12 mi n Weitchpec; Klamath-Siskiyou Region, Klamath River 121 Comment
  CAS-BOT-BC301923  Eriophyllum staechadifolium W. R. Dudley 1899-6-1 s.n. Humboldt Eureka Penninsula [Peninsula] Comment
  CAS-BOT-BC302012  Eriophyllum staechadifolium Ynez Whilton Winblad 1941-6-27 s.n. Humboldt Between Eureka and Orick Comment
  HSC37916  Erodium cicutarium Peter Sorensen 1976-5-15 Humboldt Woodley Island Comment
  SEINET12118220  Eryngium aristulatum J. P. Tracy 1912-1 3777 & 4001 Humboldt Alton 91 Comment
  HSC87150  Erysimum capitatum Pat Daly, Rudy Galindo 1988-4-30 106 Humboldt Titlow Rd., 1.3 mi. from Hwy. 299 1000 Comment
  HSC60055  Erysimum capitatum var. capitatum M. A. Baker 1978-5-6 493 Humboldt 2 km. W of Weitchpec along Klamath River. Comment
  CAS-BOT-BC54919  Erysimum menziesii Joseph P. Tracy 1904-4-24 2031 Humboldt Ocean Beach at Humboldt Bay. Comment
  HSC28486  Erysimum menziesii J. D. Ackerman 1973-3-27 54 Humboldt 1.5 mi. S of Samoa, alongside Hwy. Comment
  HSC6782  Erysimum menziesii J. W. Johnson 1962-3-9 1183 Humboldt Samoa Peninsula, on ridges as dune end of trail through Hunt Farm. Comment
  CAS-BOT-BC383042  Erythranthe grandis David B. Lowry 2005-5-14 BSR Humboldt Along Blue Slide Road, just north of the intersection with Bluff road 17 Comment
  UC1197649  Erythronium californicum Joseph P. Tracy 1933-7-11 12709 Humboldt Grouse Mountain 1524 Comment
  UC1197647  Erythronium californicum Joseph P. Tracy 1941-4-8 16848 Humboldt serpentine formation along Trinity Hwy Willow Creek Canyon 609 Comment
  HSC15487  Erythronium citrinum var. citrinum R. A. Rasp 1964-4-5 29 Humboldt 7 mi. past Hoopa on Willow Creek Rd. Comment
  RSA367654  Erythronium revolutum Thomas W. Nelson 1976-4-3 2283 Humboldt Hwy 36 at east end of Swains Flat. Comment
  UC1134597  Erythronium revolutum R. Stahelin 1933-5-17 Humboldt Kneeland Prairie China Flat Quadrangle Comment
  HSC23676  Eschscholzia californica Tim Baroni 1971-7-6 111 Humboldt 1 mi. S of Ferndale on the Mattole Rd. Comment
  HSC12348  Eschscholzia californica Steve Dorei 1970-10-20 111 Humboldt Along Plaza Ave., 200 ft. SW of Laurel Dr. Comment
  SEINET12102668  Eschscholzia californica J. P. Tracy 1950-1 18750 Humboldt Cape Mendocino. Sandy places at "Devil's Gate." S of point of the Cape 30 Comment
  HSC58818  Eucephalus ledophyllus Gilbert Muth 1979-8-1 12103 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1877 Comment
  JEPS20485  Euchiton gymnocephalus Joseph P. Tracy 1935-7-20 14110 Humboldt near Blue Lake (on Trinity Highway); North Coast Ranges, Trinity Highway 274 Comment
  CDA18072  Euchiton gymnocephalus R. Spadoni 1999-7-1 s.n. Humboldt Eureka. 0 Comment
  CAS-BOT-BC310494  Euchiton sphaericus Joseph P. Tracy 1936-8-23 15162 Humboldt Carlotta 30 Comment
  UC552229  Euchiton sphaericus Joseph P. Tracy 1935-9-1 14752 Humboldt near Dyerville; Northern Coast Ranges 91 Comment
  UC30135  Euonymus occidentalis var. occidentalis W. C. Blasdale 1896-5-31 Humboldt Eureka Comment
  UC1198985  Euphorbia crenulata Joseph P. Tracy 1928-2-26 8396 Humboldt near Centerville (at Fleener's Gulch); Northern Coast Ranges 30 Comment
  UC183764  Euphorbia crenulata Joseph P. Tracy 1913-6-20 4245 Humboldt opposite Buck Mountain (Dinsmore's Ranch, in Valley of Van Duzen River); Northern Coast Range, Valley of Van Duzen River 762 Comment
  UC668186  Euphorbia spathulata Joseph P. Tracy 1927-7-4 8226 Humboldt Kneeland Prairie 762 Comment
  UC902141  Euphorbia spathulata Joseph P. Tracy 1948-6-20 18068 Humboldt Willow Creek; Trinity River Valley 152 Comment
  CDA20238  Euphorbia virgata B. Freeman 2003-11-19 PDR 141766 Humboldt North Coast Ranges; Hwy 96 at mouth of Camp Creek near Orleans. 0 Comment
  BLMAR699  Eurybia radulina Jennifer Wheeler 2013-10-25 699 Humboldt Lacks Creek, Upper Round Prairie 731 Comment
  HSC25940  Euthamia occidentalis Thomas W. Nelson 1970-10-31 295 Humboldt Eel River near N end of the Scotia Bluff. Comment
  HSC17559  Fallopia sachalinensis H. E. Parks, S. T. Parks Jul 1952 24448 Humboldt South of the Elk River Bridge on Hwy 10 Comment
  UCD98908  Fallopia sachalinensis T. C. Fuller 1960-8-25 4973 Humboldt W/Hwy 101, 1/4 mi. N/Humboldt Hill Rd., Eureka. Comment
  UCSB1573  Fallopia sachalinensis Parks, H.; Parks, S. 1952-07 Humboldt South of the Elk River Bridge on Highway 10 Comment
  CDA18038  Festuca californica R. Spadoni, Ottoson 1999-7-13 PDR 1170299 Humboldt Hills above Showers Pass towards Kneeland from Hwy 36, Soldiers Grove. At Eaton Rough Mtn. area, near Bridgeville. 0 Comment
  UC525633  Festuca californica Joseph P. Tracy 1926-5-30 7518 Humboldt Willow Creek Canyon Northern Coast Ranges 609 Comment
  UC526870  Festuca californica Joseph P. Tracy Jul 16 1930-Jul 19 1930 9044 Humboldt near Blake lookout (along summit South Fork Mountain); Northern Coast Ranges, South Fork Mountain 1737 Comment
  BLMAR17  Festuca idahoensis Brad Barr June, 1982 17 Humboldt King range, N facing slope, Spanish ridge Comment
  RSA728074  Festuca idahoensis Gary D. Wallace 1979-6-24 1862 Humboldt Brush Mountain Lookout, SW of the town of Willow Creek. 1216 Comment
  HSC74556  Festuca occidentalis M. A. Baker 1980-7-11 2774 Humboldt Near Red Mtn. 1341 Comment
  BLMAR39  Festuca perennis Brad Barr 39 Humboldt King range, hidden valley enclosure Comment
  CAS-BOT-BC278961  Festuca rubra David D. Keck 1944-7-11 5490 Humboldt 3 mi. N. E. of Capetown 152 Comment
  HSC73769  Festuca rubra M. A. Baker 1980-6-7 1778 Humboldt Near Brush Mtn. 1128 Comment
  HSC9976  Festuca rubra J. A. Waller 1965-5-21 26 Humboldt Near Big Lagoon Comment
  POM126116  Festuca rubra Joseph P. Tracy 1906-6-24 2511 Humboldt South slope of Humboldt Hill, near Field's Landing. Region about Humboldt Bay. 0 Comment
  UC1145216  Festuca rubra Joseph P. Tracy 1938-7-4 15986 Humboldt Valley of South Yager Creek 762 Comment
  UC187108  Festuca rubra Joseph P. Tracy 1906-6-24 2511 Humboldt near Fields Landing (s slope of Humboldt Hill); Northern Coast Region, Humboldt Bay Region, Humboldt Hill 0 Comment
  UCD66390  Festuca rubra Collector Unknown 1951-6-18 Humboldt Near Hydesville. Comment
  POM126171  Festuca subulata Joseph P. Tracy 1903-5-23 1899 Humboldt Alder Point, on Eel River. 244 Comment
  UC1103707  Festuca subulata Joseph P. Tracy 1913-6-20 4215 Humboldt opposite Buck Mountain (Dinsmore's Ranch); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  UC277198  Festuca subulata Joseph P. Tracy 1921-6-4 5812 Humboldt Alton Northern Coast Region 30 Comment
  UC1103709  Festuca subuliflora Joseph P. Tracy 1937-5-30 15306 Humboldt 5 mi n Blocksburg; Larrabee Creek 457 Comment
  CHSC13615  Fragaria chiloensis C. Eiser 1974-4-10 22 Humboldt Along coast, between Orick and Prairie Creek. Redwoods State Park, on bluffs overlooking ocean. Comment
  CHSC23878  Fragaria chiloensis A. R. Morrison 1974-4-27 Humboldt Throughout understory along immediate coastal cliffs ca. 2 mi. n of Trinidad. Comment
  HSC103976  Fragaria chiloensis C. Reynolds 2015-4-12 35 Humboldt Along Freshwater Beach, near the Kuchel Visitor Center 1 Comment
  HSC12453  Fragaria chiloensis Wendell Wood 1970-9-9 283 Humboldt Gold Bluffs Beach near Fern Canyon 0 Comment
  UC1198724  Fragaria chiloensis Joseph P. Tracy 1918-5-5 4922 Humboldt Ocean Beach Humboldt Bay Comment
  HSC73774  Fragaria vesca M. A. Baker 1980-6-7 1779 Humboldt Near Brush Mtn. 1128 Comment
  UC183615  Fragaria vesca Joseph P. Tracy 1912-5-11 3585 Humboldt near Hydesville; Northern Coast Region 30 Comment
  UC183556  Fragaria vesca Joseph P. Tracy 1913-6-25 4340 Humboldt opposite Buck Mountain (Dinsmore's Ranch, in Valley of Van Duzen River); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  JEPS44674  Fragaria virginiana Joseph P. Tracy 1932-7-16 10616 Humboldt Corral Prairie; Klamath Mountains, Trinity Summit 1524 Comment
  UCD113269  Fragaria virginiana Gunter Staudt; H. Ahmadi 1989-5-15 313 Humboldt North of Trinidad along Highway, near Seawood Drive exit. Comment
  HSC27127  Frangula californica J. P. Smith, J. O. Sawyer 1973-2-10 5841 Humboldt 2.7 mi. W of Hwy. 96 on Brannan Mtn. Road, N of Willow Creek 366 Comment
  BLMAR152  Frangula californica subsp. californica Donald Hazlett 1994-6-7 152 Humboldt King range, near horse Mt. Ridge rd 670 Comment
  CAS-BOT-BC53405  Frangula californica subsp. occidentalis Carl B. Wolf 1931-8-30 2377 Humboldt Lord Ellis Road, 9 mi. above Willow Creek on grade from Willow Creek to Blue Lake 304 Comment
  CAS-BOT-BC59964  Frangula purshiana W. R. Dudley 1899-6-19 s.n. Humboldt Scotia. Comment
  BLMAR403  Frangula purshiana 2005-7-22 403 Humboldt King range, HJ Ridge grazing allotment, ecotone betw dougfir and grassland 548 Comment
  SEINET200756  Frasera speciosa Joseph P. Tracy 1917-9-2 4851 Humboldt Grouse Mt. 1524 Comment
  HSC39183  Fraxinus latifolia D. E. Anderson, J. P. Smith 1971-6-28 1217 Humboldt Along Mad River, 2 mi. S of Blue Lake. Comment
  SEINET5012890  Fraxinus latifolia Unknown 1995-4-26 1387 Humboldt Six Rivers Ntl Forest. Hwy 36, 2km W of town. Comment
  HSC31447  Fritillaria recurva D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-13 5564 Humboldt Westward lower slopes of Black Lassic near Trinity Co. line. 1585 Comment
  HSC100645  Galium Carl C. Marshall Jun 1886 13 Humboldt Pilot Creek. Comment
  HSC72984  Galium ambiguum subsp. siskiyouense M. A. Baker 1980-7-11 2773 Humboldt Near Red Mtn. 1341 Comment
  JEPS6480  Galium ambiguum subsp. siskiyouense Joseph P. Tracy 1925-5-30 7026 Humboldt Laribee Valley Northern Coast Ranges 731 Comment
  CHSC19947  Galium aparine M. S. Taylor 1975-3-25 427 Humboldt Between 11th and 12th Sts, at end of Citrus Ave, Chico. Comment
  HSC53906  Galium aparine Griswold, Butler 1979-7-11 6913 Humboldt Near Snow Camp Mtn., close to the town of Willow Creek. 1320 Comment
  HSC95075  Galium aparine Andrea Pickart 2002-6-30 133 Humboldt Lanphere Dunes Unit, Humboldt Bay National Wildlife Refuge 0 Comment
  PASA46  Galium bolanderi Frank W. Peirson 1932-7-7 Humboldt Willow Creek Comment
  JEPS6517  Galium mexicanum var. asperulum Joseph P. Tracy 1921-9-4 5953 Humboldt near Willow Creek (moist banks along river mouth); Northern Coast Ranges, Trinity River Valley, South Fork Trin 152 Comment
  RSA245002  Galium nuttallii William J. Ferlatte, B. D. Rogers 1966-6-15 2092 Humboldt Near Bridgeville. Comment
  JEPS6495  Galium parisiense Joseph P. Tracy 1911-7-4 3278 Humboldt near mouth of Willow Creek; Northern Coast Ranges, valley of Trinity River 152 Comment
  HSC76233  Galium triflorum Teresa Prendusi 1981-7-9 166 Humboldt Near Cedar Camp. 1268 Comment
  UCD121943  Galium triflorum Linda M. Barker 1976-7-5 1649 Humboldt Lanphere-Christensen Dunes, 3 miles west of Arcata. Comment
  UC1199115  Gamochaeta coarctata Joseph P. Tracy 1927-7-17 8264 Humboldt Butler Valley 152 Comment
  HSC26353  Gamochaeta ustulata T. O. Osborne 1970-9-16 54 Humboldt Trinidad Bay, Prisoner Rock Comment
  RSA44414  Gamochaeta ustulata H. M. Pollard 1948-7-18 s.n. Humboldt Near Orleans. Comment
  HSC5689  Gamochaeta ustulata David Adams 1960-7-15 Humboldt Near Fort Humboldt monument, Eureka 15 Comment
  HSC41344  Garrya buxifolia Brad Klipfel 1974-9-17 577 Humboldt Horse Mtn. Comment
  CAS-BOT-BC188537  Garrya elliptica Doris K. Kildale 1926-9-12 2667 Humboldt Klamath River near Requa. On trail between Ferry and bridge Comment
  CAS-BOT-BC188538  Garrya elliptica Doris K. Kildale 1926-8-25 2550 Humboldt Mouth of Luffenholtz Creek near Trinidad Comment
  HSC39952  Garrya elliptica Linda M. Barker 1976-1-24 1310 Humboldt 3 mi. W of Arcata Comment
  HSC49913  Garrya elliptica Maralyn O'Meara 1973-2-19 191 Humboldt McKinleyville, Murray Rd. Comment
  UC154097  Garrya elliptica J. P. Tracy 1901-4-14 1030 Humboldt opposite Eureka (Ocean Beach at Samoa); Samoa Comment
  UCD121099  Garrya elliptica Linda M. Barker 1976-1-24 1310 Humboldt Coastal forest and dunes 3 miles west of Arcata. Comment
  CAS-BOT-BC182144  Garrya fremontii S. Matthews; M. Goering; R. James 1985-5-10 058 Humboldt unspecified 1143 Comment
  LA40291  Garrya fremontii Carl B. Wolf; 1930-10-24 1762 Humboldt along Klamath River, 1 mi. above the mouth of Slate Creek 243 Comment
  UCSB4685  Garrya fremontii Moseley, Maynard 1952-8-21 Humboldt Along western valley wall of Willow Creek; within Hoppe Indian Reservation; upstream from Willow Creek Village. Comment
  RSA129632  Gastridium phleoides H. S. Yates 1936-6-23 5877 Humboldt 4 miles NNE of Cathay Peak. Comment
  SBBG53002  Gaultheria shallon J. D. Hobson -Jul-1966 Humboldt Eureka Harbor, Loleta, 10 mi S of Eureka Comment
  SD51255  Gaultheria shallon Darley F. Howe 1961-8-1 3106 Humboldt 6.0 miles north of Trinidad on Highway 101. Comment
  UC562364  Gayophytum diffusum subsp. parviflorum Joseph P. Tracy 1933-8-30 13046 Humboldt Grouse Mountain North Coast Ranges 1524 Comment
  HSC53980  Gayophytum humile Griswold, Butler 1979-7-11 7055 Humboldt Near Twin Lakes, close to the town of Willow Creek 1417 Comment
  HSC99579  Gayophytum humile K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-8-10 244 Humboldt Near North Trinity Mtn, 11. 9 mi east of Hoopa on Big Hill Rd (8N01), at Box Camp, Six Rivers National Forest. 1372 Comment
  NY232196  Gayophytum strictum H. N. Bolander 1866-1 6535 Humboldt Comment
  CAS-BOT-BC208037  Genista monspessulana Elmer I. Applegate 1931-3-28 6627 Humboldt Redwood Highway, near Dyrville Comment
  CAS-BOT-BC208038  Genista monspessulana Joseph P. Tracy 1927-7-24 8301 Humboldt Mattole Valley 152 Comment
  JEPS24349  Gentiana calycosa Joseph P. Tracy 1939-8-16 16412 Humboldt Horse Mountain Northern Coast Ranges 1402 Comment
  UC1173685  Gentiana calycosa Joseph P. Tracy 1939-8-16 16412 Humboldt Horse Mountain Northern Coast Ranges (serpentine formation) 1402 Comment
  UC213321  Gentiana plurisetosa Joseph P. Tracy 1919-9-22 5274 Humboldt Trinity Summit Northern Coast Ranges (in meadows) 1828 Comment
  JEPS47022  Gentiana sceptrum Joseph P. Tracy 1924-8-3 6768 Humboldt Northern Coast Region, Big Lagoon Big Lagoon; Northern Coast Region, Big Lagoon 6 Comment
  UCR80278  Gentiana sceptrum R. S. Woglum 1938-8-29 2038 Humboldt North Coast, grounds of Trinidad State Park, south of Trinidad 38 Comment
  UC668046  Geranium carolinianum Joseph P. Tracy 1933-7-9 12643 Humboldt Willow Creek Trinity River Valley 152 Comment
  CHSC673  Geranium dissectum M. Underhill 1952-7-13 Humboldt Coastal. 0 Comment
  HSC8646  Geranium dissectum R. J. Vernimen 1963-5-11 55 Humboldt 0.5 mi. off Samoa Rd. behind Georgia-Pacific dump, 7.5 mi. SW of Arcata Comment
  RSA0028457  Geranium dissectum H. E. Parks, S. T. Parks 1938-04 24118 Humboldt Spruce Cove, Trinidad. 61 Comment
  HSC8653  Geranium molle Jack Rockwell 1962-5-4 55 Humboldt 488 Comment
  UC56320  Geranium oreganum J. Burtt Davy 1899-6-10 5393 Humboldt Hubbard's Station Mendocino, Humboldt, and Del Norte Counties Comment
  SEINET200730  Gilia capillaris Joseph P. Tracy 1908-7-30 2920 Humboldt Northwest slope of Buck Mtn. 1219 Comment
  HSC70696  Gilia capitata Gail Newton 1980-7-15 1557 Humboldt Near Sims Mtn. 1311 Comment
  UC60880  Gilia capitata subsp. capitata Harley P. Chandler June, 1901 1447 Humboldt Klamath River North Coast Ranges, Klamath River 243 Comment
  BLMAR527  Gilia capitata subsp. pacifica Jennifer Wheeler 2009-6-23 527 Humboldt King range, On King Peak road Comment
  CAS-BOT-BC226145  Gilia capitata subsp. pacifica Doris K. Kildale 1925-6-28 794 Humboldt Kneeland Prairie - bald hills 762 Comment
  CAS-BOT-BC266491  Githopsis diffusa L. R. Abrams 1918-6-16 7176 Humboldt Willow Creek Comment
  SEINET10464629  Githopsis specularioides Tracy 1903-5-23 TRACY 1906 Humboldt Alder Point, on Eel River 152 Comment
  RSA624796  Glyceria declinata Gordon Leppig 1996-5-5 329 Humboldt Arcata, Healthsport parking lot of Union Street. 2 Comment
  BLMAR401  Glyceria elata Clara Sander June, 2005 401 Humboldt Jacoby creek, Jacoby Creek Land Trust, along trail 36 Comment
  HSC58551  Glyceria elata Overton, Butler 1979-7-24 9812 Humboldt Near Black Rock, close to the town of Willow Creek 1463 Comment
  UCD85114  Glyceria elata Harley P. Chandler 1901-6-1 1526 Humboldt North Coast Ranges. Klamath River. 426 Comment
  SEINET11849375  Gnaphalium japonicum J. P. Tracy 1949-1 18591 Humboldt Van Duzen River, near Grizzly Creek 91 Comment
  HSC58110  Gnaphalium palustre G. L. Clifton, Griswold 1979-8-1 12058 Humboldt Near N Trinity Mtn., close to the town of Hoopa 1799 Comment
  UC582518  Gnaphalium palustre Joseph P. Tracy 1933-8-30 13043 Humboldt Grouse Mountain North Coast Ranges, Grouse Mountain 1524 Comment
  HSC99669  Goodyera oblongifolia T. Jimerson, J. Pageau 1979-7-31 705 Humboldt Near Whiting Ridge. Close to town of Hyampom 1204 Comment
  UC1196372  Goodyera oblongifolia Joseph P. Tracy 1932-7-17 10660 Humboldt near Corral Prairie (Trinity Summit); Trinity Summit 1584 Comment
  UC1196434  Goodyera oblongifolia Joseph P. Tracy 1949-8-7 18447 Humboldt near Box Camp (Trinity Summit); Trinity Summit 1524 Comment
  POM225484  Goodyera oblongifolia Philip A. Munz 1936-8-10 14336 Humboldt Van Duzen River, 15 miles east of Fortuna Comment
  CAS-BOT-BC304756  Grindelia hirsutula Mary O'Conor 1921-9-26 s.n. Humboldt Eureka Comment
  JEPS25801  Grindelia hirsutula L. R. Heckard 1960-8-31 1220 Humboldt s end Dry Lagoon Beach State Park Comment
  UC665534  Grindelia hirsutula H. E. Parks Aug 1 1941-Sep 1 1941 24201 Humboldt near Arcata Comment
  SEINET194315  Grindelia hirsutula var. davyi A. A. Heller 1923-7-7 13764 Humboldt Near the South Fork of the Eel River S of Garberville Comment
  CDA6054  Grindelia nana E. C. Whitney 1963-9-2 Humboldt Benbow State Park, Eel River, south of Garberville. 0 Comment
  HSC56456  Hackelia bella Griswold, Butler 1979-7-12 7233 Humboldt Near Groves Prairie, close to the town of Willow Creek. 1256 Comment
  HSC74429  Hackelia bella Gail Newton 1980-8-10 2059 Humboldt Near Blake Mtn. 1707 Comment
  HSC76193  Hackelia californica Overton, Butler 1979-7-24 9786 Humboldt Near Black Rock, close to the town of Willow Creek 1463 Comment
  HSC48108  Hackelia micrantha Brad Klipfel 1973-7-15 203 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  JEPS79900  Hackelia micrantha Joseph P. Tracy 1932-7-11 10421 Humboldt Corral Prairie; Klamath Mountains, Trinity Summit 1524 Comment
  UC303042  Hastingsia alba Joseph P. Tracy 1926-6-20 7633 Humboldt Horse Mountain Northern Coast Ranges, Horse Mountain 1463 Comment
  RSA44540  Helenium autumnale H. M. Pollard 1947-8-18 s.n. Humboldt Klamath river bar, near Orleans. Comment
  UC668203  Helenium bolanderi Joseph P. Tracy 1938-7-6 16017 Humboldt Big Lagoon 3 Comment
  SEINET11840975  Helenium bolanderi J. P. Tracy 1901-1 1204 Humboldt Humboldt Bay 30 Comment
  HSC100435  Helenium puberulum Carl C. Marshall Jul 1886 350 Humboldt Liscom's Hill. Comment
  HSC38797  Hemitomes congestum R. York 1976-7-15 1 Humboldt Patrick's Point State Park. Comment
  CAS-BOT-BC310076  Hemizonella minima Carl B. Wolf 1934-7-2 5861 Humboldt Snow Camp (mts. E. of Korbel). Near Small Lake 1371 Comment
  CHSC57416  Hemizonella minima L. P. Janeway 1984-6-23 897 Humboldt Titlow Hill. On ridge top. 1478 Comment
  HSC39616  Hemizonella minima Thomas W. Nelson, Jane P. Nelson 1976-6-15 2720 Humboldt Along old trail from lookout to Blocksburg 1585 Comment
  UC176471  Hemizonella minima Joseph P. Tracy 1911-7-7 3436 Humboldt ridge n Willow Creek (between Willow and Campbell Creeks, near the summit); Northern Coast Ranges, Brannan Mountain 1219 Comment
  CAS-BOT-BC309983  Hemizonia congesta subsp. tracyi Richard Spellenberg 1965-6-14 1129 Humboldt Kneeland Prairie, at Kneeland Airport, 6 mi. s.e. of Kneeland Comment
  CAS-BOT-BC309995  Hemizonia congesta subsp. tracyi Carl B. Wolf 1937-6-14 8813 Humboldt North Coast Range, Kneeland Prairie 822 Comment
  CAS-BOT-BC310000  Hemizonia congesta subsp. tracyi Alice Eastwood; John Thomas Howell 1937-6-23 4805 Humboldt Little Van Duzen River Comment
  HSC35966  Hemizonia congesta subsp. tracyi Thomas W. Nelson, James Nelson, Jane P. Nelson 1975-6-21 1950 Humboldt Beside Hwy. 36 ca. 5 mi. E of Bridgeville Comment
  UC673044  Heracleum lanatum Joseph P. Tracy 1940-9-26 16730 Humboldt s. end Humboldt Bay (Salmon Creek Valley); , Salmon Creek Valley 9 Comment
  HSC74502  Heracleum maximum Gail Newton 1980-8-10 2049 Humboldt Near Blake Mtn. 1707 Comment
  HSC13055  Hesperocyparis macrocarpa C. E. Fellows 1970-12-7 368 Humboldt HSC Campus, Arcata Comment
  HSC98193  Hesperocyparis macrocarpa Will Ferrand 2002-4-27 44 Humboldt HSU Campus, 100ft W of library 24 Comment
  JEPS11793  Heterocodon rariflorum W. L. Jepson 1932-7-24 16394 Humboldt Garberville; Tooey Ranch Comment
  CAS-BOT-BC143654  Heteromeles arbutifolia Doris K. Kildale 1927-12-1 4214 Humboldt Klamath River at Orleans Comment
  RSA50141  Heteromeles arbutifolia E. K. Balls 1949-7-10 13969 Humboldt on way from Somes Bar to Orleans, near Siskiyou County line. 152 Comment
  CAS-BOT-BC311082  Heterotheca oregona var. rudis L. R. Abrams 1916-7-11 6066 Humboldt Mouth of Grizzly Creek on Van Duzen River Comment
  BLMAR246  Heuchera Jennifer Anthony-Wheeler 1997-7-24 246 Humboldt Lacks Creek, growing along W side of rd in rocky/cliff area 1219 Comment
  HSC64875  Heuchera micrantha J. P. Smith 1973-5-26 6825 Humboldt Scotia Bluffs along the Eel River near Rio Dell Comment
  HSC96272  Heuchera micrantha J. Breton, A. Livingston 2005-6-15 11 Humboldt NE of Grouse Mtn. 1327 Comment
  RSA0066094  Heuchera micrantha var. diversifolia Thomas W. Nelson, Jane Nelson 1976-7-1 2904 Humboldt Along serpentine ridge N of Bear Creek. 1463 Comment
  UC902009  Heuchera micrantha var. macropetala Joseph P. Tracy 1948-8-15 18139 Humboldt 2 mi e Grove's Prairie; Trinity Summit 1524 Comment
  CAS-BOT-BC312390  Hieracium albiflorum Doris K. Kildale 1926-6-6 2118 Humboldt Gold Bluffs Comment
  HSC57107  Hieracium albiflorum Overton, Butler 1979-7-25 9845 Humboldt Near Ammon Creek, close to the town of Willow Creek. 671 Comment
  HSC99543  Hieracium albiflorum K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-8-10 208 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  UC582421  Hieracium albiflorum Joseph P. Tracy 1937-8-7 15620 Humboldt Bald Mt. 914 Comment
  SEINET11847768  Hieracium bolanderi J. P. Tracy 1947-1 17849 Humboldt Horse Mountain Comment
  UC582423  Hieracium nudicaule Joseph P. Tracy 1933-8-6 12952 Humboldt French Camp Ridge 1066 Comment
  HSC6593  Hirschfeldia incana P. W. Shields 1955-9-29 Humboldt 0.5 mi. S of Fernbridge Comment
  HSC59684  Hirschfeldia incana George Kirn 1977-10-15 Humboldt Eureka, Q and 3rd St. 12 Comment
  CAS-BOT-BC280737  Holcus lanatus M. S. Jussel 1931-5-2 125 Humboldt 6 miles from Garberville Comment
  CAS-BOT-BC280738  Holcus lanatus Ashley C. Browne 1936-6-11 s.n. Humboldt Patrick's Point State Park Comment
  SACT001293  Holcus lanatus Lyle Bibb 1963-5-11 Humboldt Comment
  UC963839  Holcus lanatus H. E. Parks and S. T. Parks August, 1943 24260 Humboldt Spruce Cove Trinidad (Trinidad); North Coast Ranges, Spruce Cove 60 Comment
  BLMAR40  Holcus lanatus Brad Barr 1982-6-21 40 Humboldt King range, hidden valley enclosure Comment
  HSC64166  Holodiscus discolor J. O. Sawyer, K. A. Sawyer 1979-6-24 3410 Humboldt Slopes alongside Aikens Creek. 366 Comment
  HSC75944  Holodiscus discolor Overton, Butler 1979-7-24 9705 Humboldt Near Black Rock, close to the town of Willow Creek. 1554 Comment
  JEPS45040  Holodiscus discolor W. L. Jepson July 16 1902 - July 23 1902 Humboldt Hupa Trail; Hupa Valley; Hupa Trail, from Hupa Valley Comment
  CAS-BOT-BC281264  Hordeum brachyantherum subsp. brachyantherum Joseph P. Tracy 1932-7-10 10389 Humboldt Klamath Mountains, Trinity Summit. At Corral Prairie 1524 Comment
  UC187304  Hordeum brachyantherum subsp. brachyantherum Joseph P. Tracy 1911-6-25 3252 Humboldt Bucksport region about Humboldt Bay, Bucksport (region about Humboldt Bay, Northern Coast Region) 0 Comment
  HSC10176  Hordeum marinum subsp. gussoneanum J. A. Waller 1965-4-19 15 Humboldt Kneeland area. Comment
  HSC98175  Hordeum marinum subsp. gussoneanum L. M. Malloy 1965-5-14 42 Humboldt N of Liscom's Slough 1/4 mi. on Foster Ave. Comment
  HSC58547  Hosackia crassifolia Overton, Butler 1979-7-24 9601 Humboldt Near Titlow Hill, close to the town of Willow Creek. 1250 Comment
  SEINET957086  Hosackia rosea A. M. Ottley 1914-1 4599 Humboldt Same locality as 4576. Bald Mountian between high prairie and snow camp. 1219 Comment
  HSC21514  Hydrocotyle ranunculoides Rollin Sparrowe 1961-12-8 1 Humboldt In slough S of road Comment
  HSC13557  Hydrophyllum occidentale H. E. Parks, J. P. Tracy 1935-6-16 Humboldt Buck Mtn. Comment
  HSC13541  Hydrophyllum tenuipes H. E. Parks, J. P. Tracy 1930-5-25 863 Humboldt Van Duzen River 305 Comment
  UC24110  Hydrophyllum tenuipes Joseph P. Tracy May 1901 1263 Humboldt Redwood Belt; North Coast Ranges 457 Comment
  UC1198416  Hypericum anagalloides Joseph P. Tracy 1933-8-27 13003 Humboldt Harris 762 Comment
  UC275343  Hypericum anagalloides Joseph P. Tracy with H. E. Parks 1924-8-3 6757 Humboldt Big Lagoon Northern Coast Region, Big Lagoon 6 Comment
  RSA60489  Hypericum mutilum John H. Thomas 1949-6-12 899 Humboldt Near Klamath River, 1/2 mile N of town of Orleans Comment
  UC179926  Hypericum perforatum Joseph P. Tracy 1914-9-7 4618 Humboldt On Bald Mt. near Bald Mt. House; Northern Coast Ranges, Bald Mt. 914 Comment
  UCR32144  Hypericum perforatum David J. Keil 1983-7-1 17279 Humboldt North Coast Range, Bull Creek Flats Road, 2.5 mi. NE of Honeydew Comment
  UC169053  Hypochaeris glabra Joseph P. Tracy 1912-7-25 3812 Humboldt Kneeland Prairie 762 Comment
  HSC34584  Hypochaeris glabra A. Montalvo 1975-5-24 271 Humboldt Samoa Dunes off Samoa Blvd., across from the boat landing Comment
  CAS-BOT-BC311432  Hypochaeris radicata Alice Eastwood 1923-8-16 12332 Humboldt Carlotta Comment
  UC909150  Ipomopsis aggregata Joseph P. Tracy 1932-7-12 10440 Humboldt Corral Prairie Trinity Summit 1584 Comment
  UC909042  Ipomopsis aggregata Joseph P. Tracy 1933-7-25 12884 Humboldt Grouse Mtn Northern Coast Ranges 1524 Comment
  RSA366781  Iris Anstruther Davidson 1918-07 3343 Humboldt Eel River. Comment
  SEINET4170719  Iris macrosiphon Unknown 1938-3-27 15700 - 1/2 Humboldt Miranda, along Fork of Eel River 122 Comment
  UC1196390  Iris macrosiphon Joseph P. Tracy 1940-5-17 16547 Humboldt McClellan Mt. 762 Comment
  UC667117  Iris macrosiphon Joseph P. Tracy 1927-6-12 8138 Humboldt Horse Mountain; Northern Coast Ranges 1524 Comment
  HSC36635  Iris purdyi Thomas W. Nelson, James Nelson, Jane P. Nelson 1975-6-14 1907 Humboldt End of road to Pine Mtn. Comment
  HSC65229  Iris tenax subsp. klamathensis T. Jimerson, J. Pageau 1979-5-1 444 Humboldt 3.6 mi. N of Orleans on FS Rd. 15N01 Comment
  HSC44639  Iris tenuissima Diane L. Reed 1978-4-22 34 Humboldt Tish Tang Campground, 5 mi. N of Willow Creek on Hwy. 96 Comment
  UCR32156  Iris tenuissima David J. Keil 1983-7-2 17311 Humboldt c. 4 mi SE of SR 299 along Titlow Hill Rd below Horse Mountain Summit Road Comment
  RSA43869  Isatis tinctoria H. M. Pollard 1948-7-26 s.n. Humboldt Near mouth of Camp Creek near Orleans. Comment
  JEPS101847  Isolepis cernua Dean W. Taylor 1991-9-15 12285 Humboldt Big Lagoon, along Highway 101 near the mouth of Tom Creek. 3 Comment
  JEPS64018  Isolepis cernua W. L. Jepson 1921-8-7 9336 Humboldt on the flats and beach Stone Lagoon Comment
  CHSC56526  Jaumea carnosa L. P. Janeway 1983-9-24 705 Humboldt Sand pit next to Big Lagoon. 3 Comment
  UC165200  Jaumea carnosa Joseph P. Tracy 1909-9-19 3101 Humboldt bay shore at Samoa; North Coast Ranges, vicinity of Humboldt Bay 0 Comment
  UC741148  Jaumea carnosa C. C. and S. K. Harris 1939-8-26 994 Humboldt salt marsh south shore Humboldt Bay Comment
  UC1103034  Juncus bolanderi Joseph P. Tracy 1900-7-12 897 Humboldt Eureka Northern Coast Region 0 Comment
  UC421841  Juncus breweri J. B. Davy 1899-6-30 6182 Humboldt Ferndale Comment
  RSA296738  Juncus breweri J. P. Smith, Thomas W. Nelson 1977-6-30 9220 Humboldt Samoa Peninsula just east of the drag strip. Comment
  HSC74671  Juncus effusus subsp. pacificus Gail Newton 1981-8-5 2360 Humboldt Near Bug Creek, E Fork. 820 Comment
  HSC99801  Juncus effusus subsp. pacificus C. B. Wolf 1927-8-28 1190 Humboldt Eureka Bay, on the road to Arcata Comment
  JEPS63830  Juncus effusus subsp. pacificus Lincoln Constance 1934-6-25 924 Humboldt 4 mi n Dyerville (and of n boundary of Humbolt Redwood Park, on Redwood Highway); South Fork Eel River, Bull Creek Region, Englewood Comment
  SD51260  Juncus ensifolius var. ensifolius Darley F. Howe 1961-8-1 Humboldt 9 Miles north of Arcata on #101. Comment
  RSA246773  Juncus falcatus subsp. sitchensis Robert F. Thorne, Percy C. Everett 1965-8-7 35223 Humboldt Samoa Peninsula. 3 Comment
  UC184194  Juncus hemiendytus var. hemiendytus Joseph P. Tracy 1913-6-17 4168 Humboldt near Buck Mountain summit; Northern Coast Ranges 1524 Comment
  HSC40877  Juncus hesperius Linda M. Barker 1976-6-1 1568 Humboldt Lanphere-Christensen Dunes, 3 mi. W of Arcata. Comment
  RSA730737  Juncus laccatus P. F. Zika 2007-7-30 23330 Humboldt Above E side of Route 101, at high point between Stone and Big Lagoons, (NCo, North Coast). 80 Comment
  HSC67453  Juncus laccatus J. P. Smith, Steve Selva 1970-6-30 4124 Humboldt Comment
  HSC39758  Juncus lescurii Peter Sorensen 1976-8-8 Humboldt Woodley Island Comment
  HSC50573  Juncus orthophyllus G. L. Clifton, Griswold 1979-7-31 11680 Humboldt Near the Trinity Summit Guard Station, close to the town of Hoopa. 1804 Comment
  SEINET11788735  Juncus phaeocephalus J. P. Tracy 1934-1 13391 Humboldt Dow's Prairie 61 Comment
  UC183779  Juncus saximontanus Joseph P. Tracy 1912-7-31 3911 Humboldt near Buck Mountain summit; Northern Coast Ranges 1219 Comment
  CAS-BOT-BC235890  Keckiella corymbosa Carl D. Duncan 1920-9-21 333 Humboldt Hoopa Comment
  HSC32539  Keckiella corymbosa Thomas W. Nelson 1973-8-19 1116 Humboldt McKeown Ranch N of Dinsmore Comment
  UC1245365  Keckiella lemmonii Joseph T. Gregory 1929-8-4 24 Humboldt on road from Petrolia to Dyerville (Windy Nip Gap); Windy Nip Gap Comment
  UC1103696  Koeleria macrantha Joseph P. Tracy 1934-6-19 13233 Humboldt Carlotta; Northern Coast Ranges 60 Comment
  UC302178  Lactuca biennis Joseph P. Tracy 1926-7-18 7746 Humboldt near South Fork Trinity River; Northern Coast Ranges, Trinity River Valley, Kirkham Creek 182 Comment
  UC552315  Lactuca biennis Joseph P. Tracy 1934-8-14 13583 Humboldt near Myers; North Coast Ranges 60 Comment
  HSC77913  Landoltia punctata Daniel V. Richards 1980-5-25 101 Humboldt N Clam Beach Pond, E side of Hwy. 101, near Cranell exit. Comment
  UC1223223  Lapsana communis Joseph P. Tracy 1950-8-7 19275 Humboldt 1 mi w of lower end Croghan Hole; Trinity Summit Comment
  UC166288  Lasthenia californica subsp. californica Joseph P. Tracy 1908-6-8 2628 Humboldt Northern Coast Ranges, Kneeland Prairie 762 Comment
  UC169322  Lasthenia glaberrima Joseph P. Tracy 1912-6-9 3690 Humboldt Alton Northern Coast Region, Alton 30 Comment
  JEPS55323  Lathyrus lanszwertii var. tracyi Joseph P. Tracy 1926-5-2 7432 Humboldt near South Fork; Northern Coast Ranges, Trinity River Valley 182 Comment
  HSC46964  Lathyrus littoralis J. P. Smith, Thomas W. Nelson 1977-6-30 9217 Humboldt Samoa Peninsula just E of the drag strip. Comment
  RSA34308  Lathyrus littoralis C. Kistner 1935-5-21 s.n. Humboldt Samoa Comment
  RSA667222  Lathyrus littoralis George K. Helmkamp, E. A. Helmkamp 2001-7-8 7014 Humboldt North coast: Samoa Peninsula, 2.6 miles S of CA-255 bridge across Humboldt Bay. 15 Comment
  SD39835  Lathyrus littoralis Charlotte M. Hook 1931-7-15 2104 Humboldt Eureka Comment
  UCD106379  Lathyrus littoralis Roman Gankin 1965-8-6 552 Humboldt 1.3 miles south of Samoa, Samoa Peninsula. Comment
  RSA406672  Lathyrus littoralis J. P. Smith, T. W. Nelson 1977-6-30 9217 Humboldt Samoa Peninsula just east of the drag strip. Comment
  SEINET955878  Lathyrus littoralis Gordon Leppig, Kai Neander 1998-1 787 Humboldt Big Lagoon State Park. 2 Comment
  UC160918  Lathyrus littoralis Joseph P. Tracy 1909-7-18 3022 Humboldt Ocean Beach Northern Coast Region, Humboldt Bay Comment
  RSA249401  Lathyrus palustris D. E. Anderson, T. Nelson, S. Dowty 1972-6-17 5702 -A Humboldt McKeown Ranch north of Dinsmore Comment
  SBBG3361  Lathyrus polyphyllus H. and M. Dearing 1939-5-26 3446 Humboldt near Trinidad Comment
  SEINET956148  Lathyrus polyphyllus Joseph P. Tracy 1923-1 6344 Humboldt Bald Mt. 914 Comment
  UC303182  Lathyrus polyphyllus Joseph P. Tracy 1923-6-22 6344 Humboldt Bald Mt. Northern Coast Ranges 914 Comment
  HSC89576  Lathyrus sphaericus K. Grenier, Leonel Arguello 1989-6-20 354 Humboldt Child's Hill Prairie, along Bald Hills Rd., next to Stagecoach. Comment
  RSA74591  Lathyrus tracyi C. L. Hitchcock 1949-6-8 19086 Humboldt 3 miles SE of Willow Creek, along Highway #299. Comment
  UC15322  Lathyrus vestitus Joseph P. Tracy May 1901 1201 Humboldt Humboldt Bay North Coast Ranges 30 Comment
  HSC14706  Lathyrus vestitus subsp. bolanderi H. E. Parks Jun 1931 1082 Humboldt Kneeland Comment
  RSA20842  Lathyrus vestitus subsp. bolanderi Carl B. Wolf 1937-6-18 8882 Humboldt Table Bluff - between Humboldt Bay and Eel River. 30 Comment
  JEPS55357  Lathyrus vestitus var. ochropetalus Mrs. M. H. Manning 1900-1 Humboldt Hupa Valley Comment
  HSC90659  Layia carnosa Gail Newton 1982-5-5 3542 Humboldt Elk River Wildlife Area, Eureka. Comment
  UC495637  Layia carnosa Joseph P. Tracy 1932-5-16 10106 Humboldt near Samoa; Humboldt Bay 6 Comment
  UC183700  Ledum glandulosum Joseph P. Tracy 1913-9-9 4399 Humboldt Patrick's Point; Northern Coast Ranges, Patrick's Point 30 Comment
  HSC59501  Lemna minor M. A. Ericksen 1979-5-29 308 Humboldt Northern-most of Clam Beach ponds Comment
  RSA18016  Leontodon nudicaulis C. B. Wolf 1927-8-22 777 Humboldt Big Lagoon. Comment
  POM361751  Leontodon nudicaulis M. B. Dunkle 1936-8-18 4810 Humboldt Fortuna Comment
  UCD133972  Leontodon saxatilis Linda M. Barker 1976-5-13 1488 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  UCSB30609  Leontodon saxatilis Edwards, David 1974-8-12 Humboldt North side of 7th St., just W. of its overpass of U.S. 101, Arcata 18 Comment
  SBBG49010  Leontodon taraxacoides R. N. Philbrick with S. T. Parks 1974-8-28 Humboldt behind beach, along US Hwy 101, S of Orick 76 Comment
  BLMAR462  Lepidium nitidum Jennifer Anthony-Wheeler 2008-3-7 462 Humboldt Samoa dunes, growing in Samoa #3 Endangered Plant Protection Area 12 Comment
  CAS-BOT-BC226527  Leptosiphon acicularis M. S. Jussel 1931-5-2 s.n. Humboldt 25 miles N. of Garberville Comment
  CAS-BOT-BC226528  Leptosiphon acicularis Doris K. Kildale 1927-7-10 3736 Humboldt Gans Prairie - Bald Hills road Comment
  HSC71061  Leptosiphon bicolor Thomas W. Nelson, Jane P. Nelson 1980-5-30 3395 Humboldt McKeown Ranch along rd. to Anderson's Ford 854 Comment
  RSA0096840  Leptosiphon filipes Joseph P. Tracy 1950-5-30 18710 Humboldt Trinity River Valley, at Willow Creek. 152 Comment
  CAS-BOT-BC341822  Lessingia nemaclada James T. Vale 1979-7-26 s.n. Humboldt Elk Creek Comment
  POM247188  Lessingia nemaclada Joseph P. Tracy 1937-9-5 15681 Humboldt Trinity River Valley, at Willow Creek. 152 Comment
  CAS-BOT-BC94818  Leucanthemum vulgare R. C. Wenk; P. Hopkinson; M. Hammond; P. Brownsey 2008-6-6 837 Humboldt Humboldt Redwoods S.P., Pole Line Prairie along Pole Line Road, 1 air mi. N of Mattole Rd., 6 mi. E of Hwy. 101 274 Comment
  CDA7526  Leucanthemum vulgare T. C. Fuller 1958-6-17 1832 Humboldt Freeway at Arcata. 0 Comment
  UC926380  Leymus X vancouverensis A. S. Hitchcock 1915-7-13 1506 Humboldt sand dunes near Samoa; Eureka Comment
  UCD64597  Leymus mollis G. L. Stebbins Jr.; G. L. Church 1941-5-26 3105 Humboldt Little River, south of Trinidad. Comment
  RSA129556  Leymus mollis subsp. mollis H. S. Yates 1936-6-18 5727 Humboldt Near mouth of Little River 5 Comment
  RSA246911  Leymus mollis subsp. mollis R. F. Thorne, P. Everett 1965-8-5 35159 Humboldt Samoa Dunes 3 Comment
  SEINET200639 Image available Leymus mollis subsp. mollis Joseph P. Tracy 1923-5-19 6212 Humboldt Trinidad. Comment
  SEINET200640 Image available Leymus pacificus Joseph P. Tracy 1914-7-16 4586 Humboldt Eureka, Humboldt Bay. Comment
  JEPS17514  Ligusticum apiifolium Joseph P. Tracy 1924-8-17 6820 Humboldt Trinidad Northern Coast Ranges, Trinidad 60 Comment
  JEPS14228  Ligusticum apiifolium Joseph P. Tracy 1934-7-22 13485 Humboldt at crossing of Kneeland to Bridgeville rd. North Yager Creek 396 Comment
  JEPS17505  Ligusticum apiifolium W. L. Jepson 1902-6-30 1959 Humboldt on Hupa Rd. near Redwook Creek Comment
  HSC89328  Lilium columbianum E. Mackey 1986-6-16 Humboldt Patrick's Point State Park, near Ceremonial Rock Comment
  CAS-BOT-BC508401  Lilium columbianum L. R. Abrams; R. Bacigalupi 1922-6-25 8297 Humboldt Bluffs north of Big Lagoon 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
  LA22064  Lilium occidentale Carl Epling; William Robison 1935-7-22 sn Humboldt near Patrick's Point Comment
  UC54669  Lilium rubescens Mrs. M. H. Manning 1900-1 Humboldt near Hupa Comment
  CAS-BOT-BC133012  Lilium washingtonianum subsp. purpurascens Doris K. Kildale 1928-7-9 5697 Humboldt Bug Creek, Chaparral Mountain 914 Comment
  HSC98686  Lilium washingtonianum subsp. purpurascens Cara Witte 2008-7-10 867 Humboldt Forest Service Road 4N06A. Cow Creek Ridge. 1 mile east of National Forest 1. Under powerlines. 1254 Comment
  HSC99500  Lilium washingtonianum var. purpurascens K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-22 160 Humboldt Near North Trinity Mtn, Government Trail, near Box Camp, Six Rivers National Forest. 1460 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
  UC249575  Limnanthes douglasii Joseph P. Tracy 1921-4-24 5476 Humboldt Phillipsville Northern Coast Ranges (slopes facing South Fork of Eel River) 121 Comment
  UC502960  Limnanthes douglasii subsp. douglasii Joseph P. Tracy 1928-5-20 8439 Humboldt Bear River Ridge Northern Coast Ranges 609 Comment
  UC1184177  Limnanthes douglasii subsp. nivea Robert Ornduff 1960-6-1 6178 Humboldt about 3 mi e Garberville (on road to Alder Point) Comment
  SEINET3818260  Limnorchis leucostachys Unknown 1942-1 Humboldt Comment
  UC1191670  Limonium californicum Malcolm A. Nobs and S. Galen Smith 1949-8-3 1203 Humboldt salt marshes bordering Humboldt Bay (ca 2 mi n of Eureka) Comment
  UC52735  Linanthus androsaceus Chesnut and Drew 1888-7-10 Humboldt Jarnigan's Comment
  JEPS23912  Linanthus androsaceus Volney Rattan 1882-1 Humboldt Mouth of Mad River Comment
  JEPS58157  Linanthus androsaceus Milo S. Baker 1923-7-20 45 Humboldt Yager Creek 609 Comment
  HSC100707  Linnaea borealis Carl C. Marshall Jun 1886 258 Humboldt E of Hoopa. Comment
  SD42239  Linum lewisii Carl B. Wolf 1937-6-18 8889 Humboldt Table Bluff, between Humboldt Bay and Eel River. 29 Comment
  HSC75160  Listera caurina James Lenihan 1982-5-30 Humboldt Redwood National Park. Little Lost Man Creek drainage 2/3 of way up to where creek forks 457 Comment
  RSA0049664  Listera cordata Dean Wm. Taylor 2011-5-4 21113 Humboldt Alderpoint Road in the vicinity of headwaters of Knack Creek 777 Comment
  UC54690  Lithocarpus densiflorus Mrs. M. H. Manning Oct 1901 Humboldt near Hupa Comment
  CAS-BOT-BC36146  Lithocarpus densiflorus var. densiflorus Doris K. Kildale 1926-8-15 2546 Humboldt Hoopa Mt. 792 Comment
  CAS-BOT-BC36150  Lithocarpus densiflorus var. densiflorus L. B. Kildale 1931-8-9 s.n. Humboldt [Threc] Creeks on Willow Creek road Comment
  RSA174006  Lithocarpus densiflorus var. densiflorus Robert F. Thorne 1957-9-2 19010 Humboldt Sandy margin of branch of the Eel River at Burlington State Park, just S of Weott. 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
  HSC61764  Logfia gallica Ruby Van Deventer 1963-7-1 Humboldt Along Klamath River at Pecwan; 1 mi. above Pecwan on old road, S side Comment
  HSC72637  Lolium perenne J. P. Smith 1977-7-3 9246 Humboldt Six Rivers National Forest, along the road to Onion Lake, just above Blue Lake 976 Comment
  UC249794  Lolium temulentum Joseph P. Tracy 1923-6-27 6382 Humboldt Trinity River Valley, near the South Fork; Northern Coast Ranges, Trinity River Valley, near South Fork 182 Comment
  HSC39043  Lomatium ciliolatum var. ciliolatum Thomas W. Nelson, Jane P. Nelson 1976-5-31 2657 Humboldt County line, S of meadow along 5E27 just N of its junction with 1S07 1524 Comment
  HSC82019  Lomatium ciliolatum var. ciliolatum Thomas W. Nelson, James Nelson 1980-6-10 5396 Humboldt Along Swayback Ridge 4-wheel drive road, 1.25 mi. S of junction with Forest Service road. 1494 Comment
  UC1103401  Lomatium dasycarpum subsp. dasycarpum Joseph P. Tracy 1924-3-9 6610 Humboldt Northern Coast Ranges, Kneeland Prairie 762 Comment
  SEINET200744  Lomatium dissectum Joseph P. Tracy 1913-6-20 4237 Humboldt Lower foothills of Buck mountain on its northwest slope. Comment
  HSC74029  Lomatium macrocarpum Gail Newton 1980-7-22 1681 Humboldt Near Devils Backbone 1554 Comment
  HSC97218  Lomatium tracyi K. Auker, R. Battleson 2007-6-11 3 Humboldt Near Grouse Mtn., 11.9 mi. S of Hwy. 299 on F.S. Rd. NF1 1585 Comment
  UC1239545  Lonicera ciliosa Joseph P. Tracy 1936-8-7 15115 1/2 Humboldt 2 mi se Devil's Hole; Trinity Summit 1584 Comment
  HSC27656  Lonicera conjugialis G. L. Clifton, Terry Griswold 1979-7-25 10829 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1814 Comment
  CAS-BOT-BC240471  Lonicera hispidula Alice Eastwood; John Thomas Howell 1937-6-22 4733 Humboldt Near Alder Point Comment
  UCD67636  Lonicera hispidula D. Sanchez-Mata 1996-6-28 s.n. Humboldt Blue Lake-Willow Creek. Lord-Ellis Summit. 560 Comment
  HSC48414  Lonicera hispidula var. vacillans J. P. Smith, J. O. Sawyer, Jane Cole 1978-5-21 9928 Humboldt Ishi Pishi Rd., 2.5 mi. from Jct. with State Rte. 36 in Orleans. 213 Comment
  HSC81931  Lonicera hispidula var. vacillans Thomas W. Nelson, Jane P. Nelson 1979-7-3 4962 Humboldt Along road to Joe Losey property at junction of Kneeland and Maple Creek Rds. 610 Comment
  JEPS12840  Lonicera hispidula var. vacillans Lincoln Constance 1934-5-29 717 Humboldt Upper Look Prairie South Fork Eel River, Bull Creek Region 365 Comment
  RSA46852  Lonicera hispidula var. vacillans Doris K. Kildale 1927-6-28 3608 Humboldt Mad River, Warren Creek Junction. Comment
  POM92405  Lonicera involucrata L. R. Abrams 1922-6-25 8246 Humboldt Near South Bay. Comment
  HSC3927  Lonicera involucrata var. ledebourii H. E. Parks May 1936 5675 Humboldt Spruce Cove, Trinidad. Comment
  HSC62683  Lonicera involucrata var. ledebourii Michelle Stevens 1979-4-21 54 Humboldt Ponds across from Clam Beach. 0 Comment
  UC602564  Lonicera involucrata var. ledebourii Joseph P. Tracy 1937-6-20 15343 Humboldt 10 miles upstream from mouth Bear River 152 Comment
  HSC46979  Lotus corniculatus J. P. Smith, Thomas W. Nelson 1977-6-30 9206 Humboldt Samoa Peninsula just E of the drag strip. Comment
  HSC96477  Lotus corniculatus Gordon Leppig 1997-6-19 444 Humboldt Big Lagoon County Park, Big Lagoon Bog 3 Comment
  UC1197310  Lotus formosissimus J. P. Tracy 1901-6-30 1200 Humboldt immeditate vicinity Eureka 0 Comment
  UC1052456  Lotus humistratus H. E. Parks Aug 1941 24183 Humboldt Little River State Park Comment
  RSA90323  Lotus humistratus F. W. Peirson 1926-7-13 7047 Humboldt Mad River, vicinity of Blue Lake. Comment
  UC1197290  Lotus humistratus Joseph P. Tracy 1901-8-2 1239 Humboldt near Hydesville; Northern Coast Region, Van Duzen River, Yager Creek 60 Comment
  UC302114  Lotus oblongifolius Joseph P. Tracy 1926-6-20 7629 Humboldt Horse Mountain Northern Coast Ranges 1463 Comment
  UC201389  Lotus purshianus var. purshianus Joseph P. Tracy 1918-7-5 5015 Humboldt White Thorne Valley Northern Coast Ranges 304 Comment
  JEPS55746  Lotus purshianus var. purshianus W. L. Jepson 1936-8-12 17879 Humboldt Miranda South Fork Eel River Comment
  HSC56969  Lotus unifoliolatus var. unifoliolatus Overton, Butler 1979-7-23 9498 Humboldt Near Titlow Hill, close to the town of Willow Creek. 1280 Comment
  HSC78972  Lotus unifoliolatus var. unifoliolatus L. P. Janeway, Paul Wilson 1984-5-25 824 Humboldt N Spit of Humboldt Bay, BLM lands near the Coast Guard Station 5 Comment
  HSC49991  Luina hypoleuca M. A. Baker 1979-6-7 799 Humboldt Willow Creek Canyon Comment
  UC503012  Lupinus adsurgens Joseph P. Tracy Jul 16 1930-Jul 19 1930 9059 Humboldt near Blake lookout, South Fork Mountain along summit; Northern Coast Ranges, South Fork Mountain 1737 Comment
  HSC97974  Lupinus albicaulis Cara Witte 2007-7-9 468 Humboldt Grouse Mountain Lookout. Forest Service Road 4N70. 1641 Comment
  SEINET200685  Lupinus albifrons Joseph P. Tracy 1926-5-9 7458 Humboldt Valley of South Yager Creek Comment
  UC169051  Lupinus albifrons Joseph P. Tracy 1912-8-3 3969 Humboldt opposite Buck Mountain; Northern Coast Ranges, valley of Van Duzen River 762 Comment
  HSC32521  Lupinus andersonii Thomas W. Nelson, James Nelson 1973-5-28 955 Humboldt McKeown Ranch N of Dinsmore Comment
  CSUSB1636  Lupinus arboreus Susan Thompson 1967-7-23 Humboldt Trinidad, California 15 Comment
  HSC14780  Lupinus arboreus D. A. Haskell 1966-4-23 28 Humboldt Near the town of Samoa Comment
  HSC36196  Lupinus arboreus John Rehling 1975-5-15 85 Humboldt Comment
  HSC37859  Lupinus arboreus Peter Sorensen 1976-6-2 Humboldt Woodley Island Comment
  UCSB23853  Lupinus arboreus J. R. Haller 1967-6-17 2180 Humboldt collected 10.0 mi N, along U S Highway 101 at Clam Beach County Park Arcata - Clam Beach County Park, U S Highway 101 and Arcata Comment
  UC1223260  Lupinus arboreus Joseph P. Tracy 1934-7-21 13482 Humboldt Samoa Sand Dunes Comment
  UC1949020  Lupinus bicolor Barbara Ertter with Thomas J. Delendick 1987-5-16 6924 Humboldt S-facing slope; VIsta Point just W of Berry Summit on Hwy 299, ca 15 airmiles E of Arcata Comment
  SEINET12154554  Lupinus formosus var. bridgesii J. P. Tracy 1941-1 16997 Humboldt Blue Lake Comment
  HSC38069  Lupinus latifolius Thomas W. Nelson, James Nelson 1976-5-30 2638 Humboldt McKeown Ranch, N of Dinsmore. Comment
  HSC58603  Lupinus latifolius G. L. Clifton, Griswold 1979-7-25 10856 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1784 Comment
  HSC39639  Lupinus latifolius subsp. latifolius Thomas W. Nelson, Jane P. Nelson 1976-6-16 2745 Humboldt W of Alder Springs along 2S08 1494 Comment
  UC1223259  Lupinus lepidus var. lobbii Joseph P. Tracy 1940-7-7 16672 Humboldt ridge back Clear Lake (Grouse Mountain); , ridge back of Clear Lake 1524 Comment
  POM179219  Lupinus luteolus H. C. Cantelow 1940-7-6 s.n. Humboldt Near Van Duzen River, 7.5 miles east of Dinsmore. Comment
  UC1197272  Lupinus nanus Joseph P. Tracy 1914-5-14 4450 Humboldt Fort Seward; Northern Coast Ranges, Fort Seward 121 Comment
  RSA20859  Lupinus polyphyllus var. grandifolius Carl B. Wolf 1937-6-18 8898 Humboldt 1/2 miles E of Alton. 21 Comment
  HSC39785  Lupinus rivularis Peter Sorensen 1976-5-29 Humboldt King Salmon Comment
  HSC89503  Lupinus rivularis M. Roantree 1985-5-30 76 Humboldt E side of Trinidad Head along dirt road Comment
  RSA414417  Lupinus rivularis Bonnie C. Templeton 1964-6-11 10073 Humboldt Between Salyer and Arcata on Highway 299 Comment
  SEINET12154707  Lupinus sellulus J. P. Tracy 1933-1 12350 Humboldt Gasquet 91 Comment
  HSC49993  Lupinus sellulus var. artulus M. A. Baker 1979-6-7 791 Humboldt Telescope Peak 1250 Comment
  HSC58566  Lupinus tracyi G. L. Clifton, Griswold 1979-7-26 10197 Humboldt Near Salmon Mtn., close to the town of Forks of Salmon 1981 Comment
  HSC102922  Luzula M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 1001 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  HSC14130  Luzula comosa Paul Shields May 1955 Humboldt HSC campus Comment
  HSC57984  Luzula comosa G. L. Clifton, Griswold 1979-7-31 11718 Humboldt Near the Trinity Summit Guard Station, close to the town of Hoopa. 1804 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
  HSC98641  Luzula comosa Cara Witte 2007-6-1 176 Humboldt Along Forest Service 5N10. 1.75 miles east of intersection with National Forest 1. 1365 Comment
  UC1152144  Luzula comosa Joseph P. Tracy 1951-6-26 19546 Humboldt Snow Camp Meadow in boggy ground Snow Camp Meadow Comment
  HSC45017  Luzula multiflora subsp. multiflora R. Sutherland 1978-4-24 4 .24478 Humboldt Kinsey Ridge above Oat Creek 396 Comment
  CDA39249  Luzula parviflora J. Riddell 2002-4-21 47 Humboldt Prairie Creek State Park, Gold Beach roadside. Comment
  UC1152125  Luzula parviflora Joseph P. Tracy 1930-7-17 8973 Humboldt near McKay camp; South Fork Mountain, near McKay Camp 1676 Comment
  RSA69739  Luzula parviflora F. W. Peirson 1923-7-11 3673 Humboldt About 3 miles north of Orick. Comment
  UCSB28099  Luzula subsessilis Phelps, M. 1972-3-19 Humboldt Near Old Somerville Homestead; Elk Ridge 609 Comment
  RSA246934  Lycopodiella inundata R. F. Thorne, Percy C. Everett 1965-8-7 35192 Humboldt Big Lagoon, south end. 2 Comment
  HSC77926  Lycopodium clavatum L. P. Janeway 1984-3-14 715 Humboldt Arcata Community Forest, at edge of access road, NW-facing slope. 229 Comment
  UC1440267  Lycopodium clavatum L. L. Kiefer and D. Branscomb 1964-5-20 1435 Humboldt on Kuntz property 1 mi e Moonstone Beach (near Trinidad) 152 Comment
  UC1745149  Lycopodium clavatum Clare T. Golec 2000-7-13 Humboldt NE of Blue Lake 182 Comment
  SEINET6166096  Lycopodium clavatum W. Roderick 1967-9-15 s.n. Humboldt East of Trinidad, Camp 18 Georgia-Pacific Co. 30 Comment
  OBI1071  Lycopodium inundatum Lawrence L. Kiefer 1964-5-20 1436 Humboldt Big Lagoon State Park 23 Comment
  HSC96513  Lysichiton americanus Gordon Leppig 1999-4-15 1114 Humboldt Big Lagoon County Park, Big Lagoon Bog 3 Comment
  JEPS433  Lysichiton americanus W. L. Jepson 1936-8-17 17916 Humboldt 2 mi. s. Field's Landing (near Still's ranch) Comment
  UC486490  Lysichiton americanus H. E. and S. T. Parks 1930-9-14 781 Humboldt Big Lagoon Comment
  UCD138077  Lysichiton americanus Linda M. Barker 1976-3-11 1321 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  UCSB12371  Lysichiton americanus Dearing, Hugh; Dearing, Margaret 1939-5-25 Humboldt Near Samoa Comment
  UC1222700  Lysichiton americanus Joseph P. Tracy 1950-4-20 18612 Humboldt along Van Duzen R. 1 mi. w. Dinsmore's; Van Duzen R. Comment
  HSC46957  Lythrum hyssopifolia J. P. Smith, Thomas W. Nelson 1977-6-30 9203 Humboldt Samoa Peninsula just E of the drag strip. Comment
  CAS-BOT-BC342799  Madia elegans Richard Snow 1957-8-31 306 Humboldt 4 miles north of Garberville at Dean Creek Lodge Comment
  HSC73178  Madia exigua M. A. Baker 1980-5-18 1336 Humboldt Near Black Mtn. 792 Comment
  UC127612  Madia exigua Harley P. Chandler June, 1901 1330 Humboldt Hupa Indian Reservation North Coast Ranges 152 Comment
  SEINET3148089  Madia gracilis J. B. Davy, W. C. Blasdale 1899-6-19 5674 -C Humboldt Hoopa Mt. Comment
  UC176473  Madia gracilis Joseph P. Tracy 1913-6-22 4257 Humboldt opposite Buck Mountain (in Van Duzen River Valley, Dinsmore's Ranch); Northern Coast Ranges, valley of Van Duzen River, Dinsmore's 762 Comment
  HSC79470  Madia gracilis Kenneth Clark 1980-5-10 634 Humboldt Along access trail to Dead Man's Gulch 122 Comment
  HSC96938  Madia gracilis Whitney Meier, Elizabeth Kimbrough 2007-6-11 6 Humboldt Cold Springs Camp, 14.1 mi S of Hwy. 299 on NF1 Comment
  JEPS22206  Madia gracilis Joseph P. Tracy 1931-6-28 9588 Humboldt nw slope Buck Mountain; Northern Coast Ranges, Buck Mountain 762 Comment
  NY214972  Madia gracilis subsp. pilosa J. P. Tracy 1931-6-28 9588 Humboldt Buck Mountain, lower foothills of its northwest slope 762.0 Comment
  RSA254781  Madia madioides Thomas W. Nelson, James Nelson 1973-5-28 946 Humboldt McKeown Ranch north of Dinsmore. Comment
  HSC40379  Madia sativa Linda M. Barker 1976-6-14 1592 Humboldt 3 mi. W of Arcata Comment
  UC1199397  Madia sativa J. P. Tracy 1903-8-9 1940 Humboldt immediate vicinity of Eureka 0 Comment
  CAS-BOT-BC343592  Madia sativa J. Clausen 1932-9-19 692 Humboldt Weott Comment
  POM224223  Maianthemum dilatatum H. E. Parks 1932-05 4289 Humboldt Bishop Pine Lodge, Trinidad. Comment
  HSC22832  Maianthemum dilatatum C. Norman Christiansen 1964-4-15 Humboldt Arcata Community Forest Comment
  SEINET3992237  Maianthemum dilatatum C. O. Baker 1962-5-7 Humboldt 2 miles south of Trinidad along Hwy 101. Comment
  HSC57938  Maianthemum racemosum subsp. amplexicaule Gilbert Muth 1979-8-1 11600 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1877 Comment
  SEINET12048703  Maianthemum racemosum subsp. amplexicaule F. H. Utech, Walter, W.; Knight, I. 1984-1 84 -177 Humboldt ca 0.4 mi S towards Redcrest on Avenue of Giants from junction with US 101 15 Comment
  HSC74431  Maianthemum stellatum Gail Newton 1980-8-10 2061 Humboldt Near Blake Mtn. 1707 Comment
  HSC98021  Malacothrix floccifera Cara Witte 2007-7-8 427 Humboldt Board Camp Mountain. Pack trail 4N26. 1/2 mile from Tri Board Camp intersection. 1536 Comment
  HSC98706  Malacothrix floccifera Cara Witte 2007-7-24 572 Humboldt Ammon Ridge Road. 4 miles east of intersection with National Forest 1. 1462 Comment
  UCD116540  Malva verticillata Paul Holzberger 1981-8-24 s.n. Humboldt 1251 Williams Street, Eureka. Comment
  SEINET4929765  Marah fabacea Unknown 2002-8-22 90 Humboldt Along Fischer Road 0.25mi N of the Mad River. Comment
  HSC7033  Marah oregana R. I. Bonn 1965-5-9 48 Humboldt 4 mi. W of Arcata on Lanphere Rd. Comment
  HSC73934  Marah oregana Gail Newton 1980-6-28 683 Humboldt Near Mad River Butte. 1536 Comment
  POM128304  Marah oregana H. P. Chandler 1901-6-10 1407 Humboldt Saint's Rest; Klamath River. 152 Comment
  UC168954  Marah oregana Joseph P. Tracy 1909-5-30 2980 Humboldt Eureka Northern Coast Region 0 Comment
  UCSB15707  Marah oregana Breedlove, Dennis 1961-7-4 Humboldt North bank of the Mad River, 1 mile east of Blue Lake on U.S. Highway 299 243 Comment
  UC1197426  Medicago polymorpha Joseph P. Tracy 1936-6-8 14868 Humboldt Trinidad Bluffs Trinidad 3 Comment
  HSC14985  Medicago polymorpha N. R. Waite 1965-5-19 38 Humboldt W edge of Humboldt State University campus. Comment
  UC1137002  Melica aristata August L. Hormay 1932-5-12 Humboldt n Garberville (Redwood Hwy, Bull Creek Rd) 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
  CAS-BOT-BC281326  Melica harfordii Harley P. Chandler 1901-6-1 1477 Humboldt North Coast Ranges. Klamath River 365 Comment
  SEINET10599425  Melica harfordii Harley P. Chandler Chandler 1477 Humboldt Klamath River. 366 Comment
  SEINET200110 Image available Melica stricta Joseph P. Tracy 1935-7-28 14333 Humboldt Trinity Summit head of Brett Hole 1830 Comment
  UCD88651  Melica subulata A. H. Murphy 1951-5-18 s.n. Humboldt K. Roscoe Ranch, Upper Mattole. Comment
  UCD88684  Melica subulata H. S. Yates 1936-6-23 5878 Humboldt 4 miles NNE of Cathey's Peak. Comment
  UC277169  Melica torreyana Joseph P. Tracy 1921-4-24 5450 Humboldt Phillipsville Northern Coast Ranges, South Fork of Eel River (South Fork of Eel River) 91 Comment
  HSC97531  Melilotus albus Ivy Watson 2008-9-17 19 Humboldt Mad River Park on W End Rd., near pumping station, 300 ft. away from river. 8 Comment
  UC673063  Melilotus albus Joseph P. Tracy 1933-8-13 1 Humboldt along river near Blue Lake; Mad River 15 Comment
  HSC28183  Melilotus albus Richard Curtis 1973-9-28 27 Humboldt Along R.R. tracks near mouth of Nanning Cr., across Eel River from Rio Dell Comment
  JEPS63457  Mentha aquatica Joseph P. Tracy 1927-10-8 8388 Humboldt Arcata Bottom 9 Comment
  HSC99607  Mentha canadensis C. B. Wolf 1927-8-22 768 Humboldt Big Lagoon Comment
  HSC91898  Menziesia ferruginea E. Mackey 1986-5-13 Humboldt Patrick's Point State Park, Octopus Grove Comment
  CAS-BOT-BC348376  Micropus californicus var. californicus M. S. Jussel 1931-5-2 s.n. Humboldt 25 miles n. of Garberville Comment
  UC129318  Micropus californicus var. californicus Harley P. Chandler June, 1901 1358 Humboldt Hupa Indian Reservation North Coast Ranges 152 Comment
  UC1199338  Micropus californicus var. californicus Joseph P. Tracy 1919-5-31 5150 Humboldt near Mouth of Willow Creek; Northern Coast Region, Valley of the Trinity River 152 Comment
  UC427865  Micropus californicus var. californicus H. E. Parks 1930-5-25 872 Humboldt ridges above Laribee Valley Comment
  UC582439  Microseris douglasii subsp. douglasii Joseph P. Tracy 1929-5-5 8560 Humboldt Miranda, along South Fork of Eel River Northern Coast Ranges, South Fork of Eel River 121 Comment
  SEINET11810186  Microseris linearifolia J. P. Tracy 1947-1 17676 Humboldt near Briceland 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
  UC147913  Mimulus alsinoides Joseph P. Tracy 1908-6-8 2634 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  JEPS1744  Mimulus alsinoides Clyde Ritchie Bell 1951-4-21 1045 Humboldt 7 mi s Hoopa Comment
  JEPS17993  Mimulus aurantiacus var. aurantiacus George B. Rossbach 1955-6-10 504 Humboldt 2 mi n Stephens Redwood Grove (Route 101); South Fork of Eel River Comment
  POM228349  Mimulus aurantiacus var. aurantiacus C. C. Harris, S. K. Harris 1936-6-9 s.n. Humboldt Carlotta. 61 Comment
  RSA550828  Mimulus aurantiacus var. aurantiacus David M. Thompson 1992-6-6 1116 Humboldt 0.8 mi s of Hwy 101 interchange access road (to Trinity town) along road to Luffenholtz Beach 50 Comment
  UC1196791  Mimulus douglasii Joseph P. Tracy 1922-5-29 6079 Humboldt head South Yager Creek; Northern Coast Ranges 762 Comment
  UC1196794  Mimulus douglasii Joseph P. Tracy 1948-5-31 17997 Humboldt near Harris 609 Comment
  HSC76258  Mimulus guttatus Teresa Prendusi 1981-7-24 489 Humboldt Near Whiteys Peak 1585 Comment
  JEPS10789  Mimulus inodorus Joseph P. Tracy Jul 16 1930-Jul 19 1930 8983 Humboldt McKay Camp Northern Coast Ranges, South Fork Mountain 1676 Comment
  HSC85939  Mimulus kelloggii Susan Carter, Eric May, Sarah McNaull 1987-3-7 7 Humboldt 8 mi. SSE of Salyer on Co. Rd. 447, F.S. Rd. 5N03, trail 6E23; E of South Fork of Trinity River 457 Comment
  HSC104076  Mimulus layneae S. Carothers 2002-6-11 Humboldt Six Rivers National Forest; along Ruth Lake Rd., between Ruth and bridge crossing to Shannon Butte 841 Comment
  HSC75474  Mimulus moschatus J. O. Sawyer 1980-7-18 3621 Humboldt North Trinity Mountain Research Natural Area, north of Mill Creek Lake to Red Cap Hole. Comment
  HSC18484  Mimulus pilosus Jana Kattenhorn 1970-10-28 200 Humboldt Mad River, Essex Rd. off Hwy. 299 Comment
  UC424834  Mimulus pilosus Milo S. Baker 1927-8-15 2438 f Humboldt near S. Fork Station; Eel R. Comment
  HSC96198  Mimulus pulsiferae Kaylea Eickhoff, Cara M. Witte 2005-6-15 11 Humboldt 14.1 mi. S of Hwy. 299 on NF1, 0.25 mi. NE of Grouse Mtn. 1400 Comment
  CAS-BOT-BC388627  Minuartia douglasii Joseph P. Tracy 1930-6-21 8783 Humboldt Larrabee Valley 731 Comment
  CAS-BOT-BC388628  Minuartia douglasii Joseph P. Tracy 1941-6-15 16915 Humboldt Panther Gap, on the Bull Creek - Mattole Road 762 Comment
  RSA183506  Minuartia douglasii D. E. Anderson 1965-5-15 3695 Humboldt About 5 miles N of Hoopa on Bald Hills Road. Comment
  HSC4056  Minuartia douglasii D. E. Anderson 1965-5-15 3695 Humboldt 5 mi. N of Hoopa on Bald Hills Rd. Comment
  HSC58019  Minuartia pusilla G. L. Clifton 1979-7-31 11821 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  UC161043  Minuartia pusilla Joseph P. Tracy 1910-4-24 3130 Humboldt Humboldt Bay Northern Coast Region (sand dunes at ocean beach) Comment
  HSC99492  Mitella caulescens K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-14 152 Humboldt Near North Trinity Mtn, 11. 9 mi east of Hoopa on Big Hill Rd (8N01), at Box Camp, Six Rivers National Forest. 1372 Comment
  UC1198866  Mitella caulescens Joseph P. Tracy 1942-6-28 17268 Humboldt Murphy Meadows Bald Mountain (edges of bog) 975 Comment
  POM117236  Mitella ovalis Marcus E. Jones 1924-4-26 s.n. Humboldt Scotia Comment
  HSC16010  Modiola caroliniana W. D. Stevens 1967-7-16 46 Humboldt Along dirt road from old Hwy. 101 to top of N bank of Mad River Comment
  HSC97461  Moehringia macrophylla C. Witte 2007-5-21 51 Humboldt Board Camp Mountain. Forest Service Road 4N38. 1419 Comment
  RSA20804  Monardella odoratissima Carl B. Wolf 1937-8-13 9269 Humboldt North Coast Range, 12 miles E of Hoopa Valley on new road towards Trinity Summit. 1677 Comment
  CAS-BOT-BC215570  Monardella odoratissima subsp. pallida Carl B. Wolf 1937-8-13 9269 Humboldt 12 mi. E. of Hoopa Valley on new road towards Trinity Summit, North Coast Range 1676 Comment
  HSC58020  Monardella odoratissima subsp. pallida G. L. Clifton 1979-7-31 11822 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  HSC97456  Monardella odoratissima subsp. pallida Cara Witte 2007-6-12 240 Humboldt Horse Mountain Botanical Area. Near mine area. Forest Service Road 6N38. 1360 Comment
  RSA33443  Monardella odoratissima subsp. pallida Carl B. Wolf 1937-8-13 9269 Humboldt North Coast Range, 12 miles E of Hoopa Valley on new road towards Trinity Summit. 1677 Comment
  BLMAR645  Monardella sheltonii Jennifer Wheeler 2011-8-31 645 Humboldt Lacks creek, Pine Ridge road, spur 3 at Stormy Saddle 1097 Comment
  HSC98005  Monardella sheltonii Cara Witte 2007-7-26 587 Humboldt National Forest 1. 5 miles south of intersection with 5N04. Before a cattle guard crossing. 1366 Comment
  SEINET13948727 Image available Monardella villosa H. Lewis 1940-1 Humboldt 1 mi N of Richardson Grove State Park Comment
  RSA697855  Monardella villosa subsp. subserrata J. R. Bruff 1937-8-17 934 Humboldt Richardson Grove, bed of Eel River. Comment
  JEPS63367  Monardella villosa subsp. villosa W. L. Jepson 1936-8-12 17883 Humboldt Philipsville South Fork Eel River. Comment
  UC1225848  Monardella villosa subsp. villosa Joseph P. Tracy 1947-7-5 17782 Humboldt Trinity Summit, ridge top one mile west of Mud Springs. 1158 Comment
  UCD101747  Montia diffusa Don Hagar 1956-5-14 59 Humboldt Brush Mountain, 6 miles southwest of Willow Creek. 914 Comment
  CAS-BOT-BC445157  Montia parvifolia Doris K. Kildale 1928-6-24 5263 Humboldt Redwood Creek at Berry's 289 Comment
  CAS-BOT-BC445158  Montia parvifolia W. R. Dudley 1899-1-1 s.n. Humboldt Trinidad Head Comment
  HSC98550  Montia parvifolia Cara Witte 2008-6-27 765 Humboldt Along National Forest 1 on Kinsey Ridge. 1.5 mi. NE of intersection with 4N09. 1317 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
  UC162970  Montia parvifolia Joseph P. Tracy 1908-6 2708 Humboldt opposite Buck Mountain (Valley of Van Duzen River); Northern Coast Ranges 762 Comment
  UC503092  Morella californica Joseph P. Tracy 1931-5-1 9332 Humboldt Northern Coast Ranges, Downs Prairie Comment
  HSC102098  Muhlenbergia filiformis M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 985 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  UCD86610  Muhlenbergia filiformis Don Hagar 1957-8-6 s.n. Humboldt Jackson Hole, west of the Trinity Summit area. 1645 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
  UCD86796  Muhlenbergia mexicana Eleanor Armstrong 1934-1 1149 Humboldt Richardson Grove. Comment
  UC552838  Myosotis discolor Joseph P. Tracy 1935-5-25 13847 Humboldt Fort Seward North Coast Ranges, Fort Seward 106 Comment
  RSA77516  Myriophyllum sibiricum F. W. Peirson 1923-7-11 3786 Humboldt 20 miles north of Eureka. Comment
  CAS-BOT-BC7179  Myrrhis bolanderi Henry Nicholas Bolander 6525 Humboldt Lambert's Lake Comment
  HSC15608  Narthecium californicum J. P. Tracy 1930-7-17 9003 Humboldt S Fork Mtn. at McKay Camp 1677 Comment
  UCD87901  Nassella lepida A. H. Murphy 1951-5-18 s.n. Humboldt 2.5 mi. northwest of Petrolia on rocky road cut along county road. Petrolia to Ferndale. Comment
  SEINET201033  Nassella pulchra Joseph P. Tracy 1927-5-8 7963 Humboldt Phillipsville. 122 Comment
  HSC56334  Navarretia divaricata Overton, Butler 1979-8-2 12710 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  RSA43882  Navarretia intertexta H. M. Pollard 1948-7-18 s.n. Humboldt Near Orleans. Comment
  HSC81574  Navarretia mellita Thomas W. Nelson, Jane P. Nelson 1980-7-15 6068 Humboldt Old logging rds. SE of Lundbar Hills 30 Comment
  JEPS70390  Navarretia mellita Joseph P. Tracy 1934-7-9 13333 Humboldt 5 mi s Harris 762 Comment
  SEINET12279170  Navarretia tagetina J. P. Tracy 1950-1 18862 Humboldt Dobbyn Creek, 3 mi NE of Alderpoint 213 Comment
  UC198633  Navarretia tagetina Joseph P. Tracy 1916-9-6 4758 Humboldt headwaters of Canoe Creek Northern Coast Ranges, Grasshopper Ridge, Canoe Creek 609 Comment
  UC1198518  Navarretia viscidula Joseph P. Tracy 1942-7-18 17287 Humboldt Garberville 152 Comment
  HSC100628  Neillia opulifolia Carl C. Marshall Apr 1885 52 Humboldt Streams etc. near coast. Comment
  UC1245398  Nemophila heterophylla Joseph T. Gregory 1937-5-17 1213 Humboldt e side Trinity River , Willow Creek, Graham Ranch (Graham Ranch, Willow Creek) 152 Comment
  HSC13586  Nemophila menziesii Doris K. Kildale 1926-4-11 1762 Humboldt Buck Mtn. Comment
  UC1222905  Nemophila menziesii Joseph P. Tracy 1950-4-20 18609 Humboldt 1/2 mi w Dinsmore's; w of Dinsmore's Comment
  HSC38261  Nemophila menziesii var. atomaria Thomas W. Nelson, James Nelson 1976-3-11 2268 Humboldt Beside Bridgeville-Kneeland Rd. at jct. with Redwood House Rd. Comment
  UCSB29347  Nemophila menziesii var. atomaria Phelps, M. 1972-3-20 Humboldt 0.6 mi. along Black Sands Rd. from Shelter Cove Rd. junction; Shelter Cove 24 Comment
  HSC73127  Nemophila parviflora M. A. Baker 1980-5-18 1284 Humboldt Near Black Mtn. 1006 Comment
  CDA17340  Noccaea fendleri subsp. californica P. Haggard 2004-8-15 PDR 1285929 Humboldt North Coast Ranges; Friday Ridge Rd, Willow Creek. 0 Comment
  BLMAR149  Notholithocarpus densiflorus Donald Hazlett 1994-6-7 149 Humboldt King range, E-facing slope off horse mountain ridge 609 Comment
  UCR45372  Notholithocarpus densiflorus var. densiflorus Barry Silver 1986-4-13 505 Humboldt Bair Road, 6.4 mi. WSW of Hoopa Comment
  HSC59108  Nuttallanthus texanus M. A. Baker 1978-5-6 481 Humboldt 2 km. S of Weitchpec Comment
  UC1222315  Oemleria cerasiformis Joseph P. Tracy 1950-4-20 18618 Humboldt 2 mi w Dinsmore's (nw slope of Buck Mountain, lower slopes); Buck Mountain 762 Comment
  UC183606  Oemleria cerasiformis Joseph P. Tracy 1913-3-9 4022 Humboldt near Hydesville; Northern Coast Region 60 Comment
  UC916666  Oenanthe pimpinelloides Joseph P. Tracy 1950-8-18 19330 Humboldt along Blocksburg rd. near bridge across Larrabee Creek 457 Comment
  HSC90660  Oenanthe sarmentosa Gail Newton 1982-6-10 3639 Humboldt Elk River Wildlife Area, Eureka Comment
  HSC21578  Oenanthe sarmentosa B. R. Templeton 1962-5-10 Humboldt Diagonal road from Humboldt State campus to 13th St., Arcata Comment
  RSA246754  Oenanthe sarmentosa R. F. Thorne, P. Everett 1965-8-7 35179 Humboldt Big Lagoon, south end. 2 Comment
  CHSC70154  Oenothera glazioviana David K. Imper 1993-6-15 Humboldt Base of sand dunes, south end of Manila, west of Eureka. 6 Comment
  HSC92715  Oenothera villosa subsp. strigosa D. K. Imper 1985-7-15 Humboldt About 1 mi. S of Orleans on E side of Hwy. 96 43 Comment
  CAS-BOT-BC499865  Orobanche fasciculata L. R. Abrams 1918-6-15 7119 Humboldt Brannan Mt. near Willow Creek 1371 Comment
  BLMAR171  Orobanche uniflora Donald Hazlett 1994-6-7 171 Humboldt King range, near horse Mt. Ridge rd 670 Comment
  UC1245410  Orobanche uniflora subsp. occidentalis Joseph P. Tracy 1935-7-28 814 Humboldt Head of Devil's Hole, Trinity Summit. Comment
  HSC102065  Orthocarpus imbricatus M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 967 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  HSC56063  Orthocarpus imbricatus G. L. Clifton, Terry Griswold 1979-7-31 11707 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1805 Comment
  HSC56153  Orthocarpus imbricatus G. L. Clifton, Terry Griswold 1979-8-1 12009 Humboldt Near N Trinity Mtn., close to the town of Hoopa. 1798 Comment
  HSC100677  Orthocarpus lithospermoides Carl C. Marshall Jun 1887 406 Humboldt Spruce Grove. Comment
  POM147450  Orthocarpus purpurascens var. latifolius Joseph P. Tracy 1925-8-14 7230 Humboldt Near Samoa, on Humboldt Bay. Comment
  SEINET4096670  Orthocarpus tenuifolius O. M. Clark 1932-1 5693 Humboldt South Eureka. Comment
  HSC56138  Osmorhiza berteroi G. L. Clifton, Terry Griswold 1979-8-1 11959 Humboldt Near Mill Creek Lakes, close to the town of Hoopa 1707 Comment
  BLMAR209  Osmorhiza berteroi Jennifer Anthony-Wheeler 1996-7-9 209 Humboldt Pilot ridge, growing throughout shady understory Comment
  UC1222754  Osmorhiza berteroi Joseph P. Tracy 1950-6-25 18889 Humboldt Burr Valley Buck Mountain (nw slope of mt.) 1066 Comment
  JEPS154  Osmorhiza occidentalis W. L. Jepson Jul 16 1902-Jul 23 1902 2045 Humboldt Trinity Summit 2133 Comment
  UC642277  Osmorhiza occidentalis Joseph P. Tracy 1933-7-26 12906 Humboldt Grouse Mountain 1630 Comment
  UC726372  Oxalis oregana A. A. Heller 1923-7-8 13770 Humboldt near Pepperwood Comment
  SEINET12183670  Oxalis oregana F. H. Utech, Sato, T.; Ohara, M. 1990-1 90 -290 Humboldt Humboldt Redwoods State Park, Jensen Grove 50 Comment
  UC170010  Oxalis oregana Harley P. Chandler 1901-6-30 1188 Humboldt Eureka North Coast Ranges, Humboldt Bay 30 Comment
  JEPS100404 Image available Packera bolanderi var. bolanderi Dean W. Taylor 2007-7-12 20163 Humboldt Pig Toe, approximately where the Humboldt Base Line intersects the Fruit Ranch road 777 Comment
  UC207819  Panicum acuminatum var. acuminatum Joseph P. Tracy 1918-7-5 5014 Humboldt White Thorn Valley; Northern Coast Ranges, White Thorn Valley 304 Comment
  RSA54133  Panicum oligosanthes var. scribnerianum Henry M. Pollard 1946-8-27 s.n. Humboldt South side of Klamath River, near Boyce Creek Orleans region Comment
  CDA2139  Parapholis incurva Gordon Leppig, Sylvia Leppig 2000-5-29 1385 Humboldt Trinidad Harbor, Trinidad. Comment
  HSC93730  Parapholis incurva Gordon Leppig, Sylvia Leppig 1998-5-25 788 Humboldt Big Lagoon State Park. 1 Comment
  UC1103408  Parapholis incurva Joseph P. Tracy 1938-7-15 16070 Humboldt mouth of Eel River 3 Comment
  UC249593  Paxistima myrsinites Joseph P. Tracy 1922-4-30 6042 Humboldt ridge n. of Willow Creek between Willow Creek and Campbell Creek (Brannan Mt.); Northern Coast Ranges, Brannan Mt. 914 Comment
  HSC100679  Pedicularis densiflora Carl C. Marshall Apr 1887 379 Humboldt Hoopa Valley. Comment
  JEPS7203  Penstemon anguineus W. L. Jepson 1902-7-24 2112 Humboldt Trinity Summit 1828 Comment
  SDSU10915  Penstemon anguineus D. F. Howe 1964-8-7 3945 Humboldt 6.2 miles from #96 on Mill Creek Road, Hoopa Valley. 1067 Comment
  HSC100680  Penstemon azureus Carl C. Marshall 461 Humboldt Near P. Asbills, S Humboldt. Comment
  HSC56218  Penstemon deustus G. L. Clifton, Terry Griswold 1979-8-2 12241 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  UC577416  Penstemon newberryi var. berryi Joseph P. Tracy Jul 16-19 1930 8953 Humboldt South Fork Mountain, open glades along summit near Blake lookout Northern Coast Ranges 1737 Comment
  HSC56044  Penstemon procerus var. brachyanthus G. L. Clifton, Terry Griswold 1979-7-31 11619 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1719 Comment
  HSC44827  Penstemon purpusii Thomas W. Nelson, Jane Nelson 1977-7-4 3600 Humboldt Along old trail above Alder Springs 1555 Comment
  UC3355579  Penstemon rattanii J. G. Lemmon June 1882 Humboldt near Kneeland Prairie; near Kneeland Prairie Comment
  HSC37673  Pentagramma triangularis R. Sutherland 1976-8-6 28 .6876 Humboldt Whitmore Grove 99 Comment
  UC162775  Pentagramma triangularis subsp. triangularis Joseph P. Tracy 1911-7-5 3315 Humboldt Willow Creek near its mouth Willow Creek; Northern Coast Ranges, tributary of Trinity River 243 Comment
  HSC99564  Perideridia gairdneri subsp. borealis K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-8-10 229 Humboldt Near North Trinity Mtn, 11. 9 mi east of Hoopa on Big Hill Rd (8N01), at Box Camp, Six Rivers National Forest. 1372 Comment
  UC1197322  Perideridia gairdneri subsp. borealis Joseph P. Tracy 1913-9-7 4390 Humboldt Eureka Northern Coast Region 0 Comment
  UC906650  Perideridia gairdneri subsp. borealis Joseph P. Tracy 1942-9-20 17324 Humboldt 2 mi s Fields Landing 3 Comment
  HSC34709  Perideridia kelloggii Thomas W. Nelson 1974-7-20 1697 Humboldt McKeown Ranch N of Dinsmore Comment
  HSC56312  Perideridia kelloggii Overton, Butler 1979-8-2 12645 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  HSC75963  Perideridia kelloggii Overton, Butler 1979-8-2 12586 Humboldt Near Bret Hole, close to the town of Hoopa 1554 Comment
  HSC98872  Perideridia oregana Cara Witte 2007-7-5 421 Humboldt National Forest 1. 1.5 miles southeast of Forest Service Road 5N09. 1578 Comment
  HSC17528  Persicaria maculosa W. L. Jepson 1921-8-7 9334 Humboldt Stone Lagoon Comment
  HSC6054  Petasites frigidus var. palmatus S. J. Hawks 1965-4-6 18 Humboldt Luffenholtz Beach Comment
  UC1215535  Petasites frigidus var. palmatus D. E. Anderson 1962-12-9 2346 Humboldt e of Humboldt State College campus Comment
  UC1199101  Phacelia Joseph P. Tracy 1948-5-31 18022 Humboldt Blocksburg 518 Comment
  POM287458  Phacelia bolanderi Lyman Benson 1929-7-16 1833 Humboldt Weott Ranger Station. Comment
  UC673184  Phacelia bolanderi Lincoln Constance and Reed C. Rollins 1942-5-12 2892 Humboldt 2 mi n Orleans; Klamath-Siskiyou Region, Klamath River 121 Comment
  SEINET12335255  Phacelia bolanderi F. H. Utech, Sato, T.; Ohara, M. 1990-1 90 -304 Humboldt Six Rivers National Forest, 0.5 mi S of CA 199 on French Hill Rd (USFS Rd 411) 150 Comment
  UC1239734  Phacelia ciliata var. ciliata J. P. Tracy 1899-4 163 Humboldt Immediate vicinity of Eureka 0 Comment
  CHSC110702  Phacelia corymbosa Dean Wm. Taylor 2004-6-24 19129 Humboldt North Coast Ranges. Horse Mountain, along Titlow Hill Road 0.4 miles north from the junction with the road to the mountain summit. 1310 Comment
  HSC30745  Phacelia corymbosa D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5621 Humboldt Mt. Lassic and two smaller peaks to immediate E 1768 Comment
  HSC102541  Phacelia hastata subsp. hastata M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-28 1527 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1106 Comment
  HSC38128  Phacelia heterophylla subsp. virgata Thomas W. Nelson, James Nelson 1976-5-30 2618 Humboldt McKeown Ranch, N of Dinsmore. Comment
  HSC75450  Phacelia mutabilis J. O. Sawyer 1980-7-18 3587 Humboldt North Trinity Mountain Research Natural Area, north of Mill Creek Lake to Red Cap Hole. Comment
  JEPS91346  Phacelia mutabilis Dean W. Taylor 1991-8-15 12299 Humboldt ridge 1 mile West of Horse Mountain, 1493 Comment
  BLMAR532  Phacelia nemoralis subsp. nemoralis Jennifer Wheeler 2009-6-23 532 Humboldt King range, On Paradise Ridge road Comment
  HSC102566  Phacelia procera M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-29 1553 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1579 Comment
  UC1103764  Phalaris californica Joseph P. Tracy 1934-8-6 13562 Humboldt n side of Mad River near bridge on Trinity Highway 5 mi ne Arcata; North Coast Ranges, n side of Mad River 30 Comment
  CAS-BOT-BC76563  Philadelphus lewisii Harley P. Chandler 1901-6-1 1333 Humboldt Hupa Indian Reservation 152 Comment
  UC1127362  Philadelphus lewisii R. Stahelin 1933-7-18 Humboldt Korbel near Riverside Plant. Korbel, 7.5 Q. Comment
  UC184008  Phleum alpinum Joseph P. Tracy 1912-7-31 3908 Humboldt on nw slope Buck Mountain (Burr Valley); Northern Coast Ranges, nw slope of Buck Mountain 1066 Comment
  UC526854  Phleum alpinum Joseph P. Tracy 1934-7-18 13447 Humboldt Grouse Mountain; North Coast Ranges, Grouse Mountain 1524 Comment
  HSC98126  Phleum pratense Cara Witte 2007-6-28 385 Humboldt Forest Service Road 5N10. Approximately 1/2 mile east of intersection with National Forest 1/ Titlow Hill Road. 1426 Comment
  HSC100894  Phlox adsurgens Carl C. Marshall Jun 1886 324 Humboldt Trail E of Hoopa. Comment
  JEPS26749  Phoradendron villosum W. L. Jepson 1932-7-24 16545 Humboldt ca. 6 1/2 mi. above & e. Garberville (from near rd. along summit of Mail Ridge) 914 Comment
  HSC92126  Phyllospadix scouleri G. Smith 1967-7-21 1979 Humboldt Patrick's Point State Park 0 Comment
  SEINET2444304  Phyllospadix scouleri C. Davidson 2010-10-3 11819 Humboldt Moonstone State Beach. North of Arcata. Washed up by a high surf.; 0 Comment
  CAS-BOT-BC140587  Physocarpus capitatus Henry M. Pollard 1945-9-5 s.n. Humboldt Wilson Creek, Klamath River Canyon Comment
  SEINET4090988  Physocarpus capitatus O. M. Clark 1932-1 5313 Humboldt South Eureka. Comment
  HSC1354  Picea sitchensis J. W. Johnson 1962-4-29 1295 Humboldt W.M. Lanphere Farm, Samoa Peninsula, Arcata. Comment
  HSC93254  Picea sitchensis Gordon Leppig 1998-3-15 719 Humboldt Quarry Rd. off Jacoby Creek 98 Comment
  NY34412  Picea sitchensis E. K. Balls 1953-10-11 18631 Humboldt 23.4 miles north of Petrolia on Old Coast Road, toward Ferndale 365.8 Comment
  NY99565  Picea sitchensis C. B. Wolf 1930-10-28 Garden Field No. 1037 -(seed) Humboldt 5 miles south of Ferndale, on road to Petrolia 152.4 Comment
  UC535712  Picea sitchensis Eleanor Armstrong 1934-7-31 1145 a Humboldt Patricks Point 30 Comment
  UCR48862  Picris echioides R. D. Goeden, Don W. Ricker 1987-9-2 870902- 6 Humboldt Hwy 36 at Chantham Grove (just west of Grizzly Creek Redwoods State Park.) 91 Comment
  HSC1485  Pinus contorta D. M. Thomson 1965-5-20 65 Humboldt 1.0 mi. S of Samoa. Comment
  HSC54523  Pinus jeffreyi Overton, Butler 1979-7-23 9455 Humboldt Near Horse Mountain Mine, close to the town of Willow Creek 1295 Comment
  RSA46880  Pinus lambertiana Doris K. Kildale 1926-9-5 2611 Humboldt Lassecks Peaks. 1570 Comment
  HSC55145  Pinus monticola G. L. Clifton, Griswold 1979-8-1 12046 Humboldt Near N Trinity Mtn., close to the town of Hoopa. 1798 Comment
  HSC98866  Pinus ponderosa var. ponderosa Cara Witte 2008-7-1 787 Humboldt Near Grouse Mountain. Along Forest Service Road 4N32. Approximately .5 mile south of intersection with 5N04 and 4N32E. 1406 Comment
  RSA249357  Piperia transversa J. D. Ackerman 1973-8-23 116 Humboldt 2 miles north of Manila Comment
  RSA273298  Piperia transversa J. D. Ackerman 1974-8-13 404 Humboldt Ca. 2 miles north of Manila, between sand dunes and Mad River Slough Comment
  HSC102544  Piperia unalascensis M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-29 1534 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1579 Comment
  UC1196411  Piperia unalascensis Joseph P. Tracy 1913-6-26 4346 Humboldt opposite Buck Mountain ( Dinesmore's Ranch); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  UC615024  Piperia unalascensis Beryl O. Schreiber 1934-6-6 1146 Humboldt 5 mi e Gray's Resort (road to Redding); Redwood Creek Comment
  HSC41224  Plagiobothrys hispidulus Thomas W. Nelson, Jane P. Nelson 1977-7-4 3593 Humboldt Margin of pond above Alder Springs 1585 Comment
  UC177186  Plagiobothrys nothofulvus Joseph P. Tracy 1913-6-13 4115 Humboldt opposite Buck Mountain (valley Van Duzen River, Dinsmore's Ranch); Northern Coast Ranges, Valley Van Duzen River, Dinsmore's Ra 762 Comment
  UC526809  Plagiobothrys nothofulvus Joseph P. Tracy 1927-3-27 7847 Humboldt warm grassy slopes near South Fork; Northern Coast Ranges, Trinity River Valley 182 Comment
  POM126241  Plagiobothrys reticulatus 1907-6-20 2568 Humboldt Eureka 0 Comment
  UC1222209  Plagiobothrys reticulatus Joseph P. Tracy 1942-6-28 17270 Humboldt roadside near Murphy Meadows (Bald Mountain (e of Korbel)); Bald Mountain Comment
  UCD120867  Plagiobothrys reticulatus Joseph P. Tracy 1946-5-30 17541 Humboldt Riverside Park and Carlotta, by old Strong's District School House, 5 miles east of town. 60 Comment
  JEPS60972  Plagiobothrys reticulatus var. reticulatus Joseph P. Tracy 1937-6-20 15351 Humboldt 10 mi up stream from mouth; Bear River 152 Comment
  JEPS60990  Plagiobothrys reticulatus var. reticulatus Joseph P. Tracy 1912-6-9 3680 Humboldt Alton Northern Coast Region 30 Comment
  JEPS61046  Plagiobothrys reticulatus var. rossianorum Joseph P. Tracy 1942-6-15 17142 Humboldt Miranda South Fork of Eel River 121 Comment
  UC1222207  Plagiobothrys scouleri Joseph P. Tracy 1946-5-19 17535 Humboldt near Ashfield; Kneeland Prairie 822 Comment
  HSC100408  Plagiobothrys tenellus Carl C. Marshall Apr 1887 372 Humboldt Hoopa Valley. Comment
  HSC69871  Plagiobothrys tenellus Thomas W. Nelson 1978-5-28 4093 Humboldt McKeown Ranch, N of Dinsmore 762 Comment
  JEPS68128  Plagiobothrys tenellus Joseph P. Tracy 1932-5-1 9863 Humboldt near Garberville (Redway); Northern Coast Ranges 182 Comment
  UC906674  Plantago coronopus Stuart K. Harris 1942-5-28 6982 Humboldt 1 mi w Fortuna (near Palmer Creek) 15 Comment
  UC1125641  Plantago lanceolata H. L. Person 1932-7-16 Humboldt n of Trinidad (highway); Rock Point Quad. Comment
Read comments
Aug 3 2007
  HSC99488  Plantago lanceolata K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-14 147 Humboldt Near North Trinity Mtn, 11. 9 mi east of Hoopa on Big Hill Rd (8N01), at Box Camp, Six Rivers National Forest. 1372 Comment
  SEINET14412274  Plantago major Joseph P. Tracy 1942-1 17300 Humboldt Fickle Hill, 6 miles southeast of Arcata 610 Comment
  HSC26448  Plantago maritima T. O. Osborne 1970-5-17 4 Humboldt Sugarloaf Rock, Cape Mendocino Comment
  HSC83041  Plantago maritima A. L. Eicher 1985-6-16 Humboldt SW side of the mouth of Mad River Slough 1 Comment
  JEPS6471  Plantago subnuda Rimo Bacigalupi and G. T. Robbins 1954-8-10 4760 Humboldt 0.4 mi s south boundary marker for Dry Lagoon Beach (along U.S. Highway 101); Dry Lagoon Beach Comment
  HSC53952  Platanthera dilatata Griswold, Butler 1979-7-11 7002 Humboldt Near Snow Camp Lake, close to the town of Willow Creek. 1393 Comment
  HSC74221  Platanthera dilatata var. leucostachys M. A. Baker 1980-7-22 3121 Humboldt Near Grogan Hole. 1676 Comment
  HSC28079  Platanthera dilatata var. leucostachys J. D. Ackerman, A. Montalvo 1973-7-4 93 Humboldt E boundary of Hoopa Indian Reservation, Big Hill Rd. Comment
  UCSC000161  Platanthera leucostachys W. Jan Rowe 1967-1 Humboldt Comment
  UC1196418  Platanthera sparsiflora Joseph P. Tracy 1932-7-16 10631 Humboldt near Corral Prairie; Trinity Summit 1584 Comment
  UC1239577  Plectritis congesta Joseph P. Tracy 1901-5-18 1100 1/2 Humboldt Northern Coast Region, Ocean Beach at Humboldt Bay Ocean Beach; Northern Coast Region, Humboldt Bay, Ocean Beach Comment
  UC1239579  Plectritis congesta Joseph P. Tracy 1901-4-14 1016 Humboldt Ocean Beach at Humboldt Bay Ocean Beach Ocean Beach; Northern Coast Region, Humboldt Bay, Ocean Beach Comment
  UC1239580  Plectritis congesta Joseph P. Tracy 1904-4-24 2024 Humboldt Ocean Beach at Humboldt Bay Ocean Beach Ocean Beach; Northern Coast Region, Humboldt Bay, Ocean Beach Comment
  UCR45351  Plectritis congesta subsp. brachystemon Barry Silver 1986-4-23 540 Humboldt North Coast Range, Bair Road, 9.5-10 mi NW of the junction with Hwy 299; Pine Ridge Summit Area 997 Comment
  HSC96284  Plectritis congesta subsp. congesta J. Breton, A. Livingston 2005-6-8 5 Humboldt 2.0 mi. S of Hwy. 299 on Titlow Rd. 1032 Comment
  RSA178587  Plectritis congesta var. congesta Joseph P. Tracy 1950-5-6 18639 Humboldt At my cabin. Trinity River Valley, at Willow Creek. Comment
  HSC48728  Pleuricospora fimbriolata J. Pageau, T. Jimerson, W. Wisler, A. Regalis 1979-6-13 524 Humboldt Off FS 10N05. SE slope of Hopkins Butte. Bulk Collection 186 1037 Comment
  HSC49370  Pleuricospora fimbriolata T. Jimerson, J. Pageau 1979-6-15 582 Humboldt West of FS 11N21, on the boundary between Sections 27 and 28. 762 Comment
  RSA167306  Pleuropogon refractus Joseph P. Tracy 1951-6-26 19560 Humboldt Halfway between Snow Camp and Twin Lakes (at Charley Preston's old gate near the road) Comment
  UC180505  Pleuropogon refractus Joseph P. Tracy 1914-7-4 4529 Humboldt Bald Mountain, High Prairie Bald Mountain; Northern Coast Ranges, Bald Mountain 1066 Comment
  UCD90105  Pleuropogon refractus R. Tofsrud 1949-7-22 s.n. Humboldt on road between Scotia and Capetown. Comment
  HSC10658  Poa bulbosa D. J. Wilder 1965-5-15 36 Humboldt 2 mi. E of Freshwater on Rd. to Kneeland. Comment
  UC1132594  Poa bulbosa H. L. Person 1932-5-11 Humboldt near Arcata; Eureka Quadrangle Comment
  HSC10685  Poa confinis Norman H. Moe 1962-5-17 Humboldt Lanphere's Place. Comment
  HSC10705  Poa douglasii S. J. Moore 1965-5-9 48 Humboldt Dry Lagoon State Park, near entrance. Comment
  SEINET10659238  Poa douglasii Huron H. Smith 1911-1 Smith 3852 Humboldt Comment
  POM161908  Poa howellii Joseph P. Tracy 1921-4-24 5451 Humboldt Phillipsville. Facing south fork of Eel River. 91 Comment
  HSC10723  Poa kelloggii J. P. Tracy 1926-4-25 7415 Humboldt Grizzly Creek on Van Duzen River. Comment
  CAS-BOT-BC254283  Poa macrantha Doris K. Kildale 1926-6-29 2243 Humboldt Mouth of Mad River Comment
  RSA10134  Poa macrantha Joseph P. Tracy 1933-5-20 12224 Humboldt Cape Mendocino, near ocean shore, south point of the Cape. 3 Comment
  RSA54930  Poa macrantha W. A. Silveus 1938-7-10 6912 Humboldt North of Eureka Comment
  UC153996  Pogogyne serpylloides Joseph P. Tracy 1908-6-7 2621 Humboldt at Butter Valley on Mad River 152 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
  UC1198993  Polygala californica Joseph P. Tracy 1913-7-20 4377 Humboldt on Redwood Creek near Berry's; Northern Coast Ranges, Redwood Creek 304 Comment
  JEPS27112  Polygala cornuta var. cornuta Joseph P. Tracy 1936-8-30 15182 Humboldt Willow Creek Trinity River Valley 152 Comment
  HSC54692  Polygonum douglasii Overton, Butler 1979-7-26 9989 Humboldt Near Willow Creek 1341 Comment
  HSC55221  Polygonum douglasii Walter Overton 1979-8-1 12393 Humboldt Near Mill Creek, Middle Fork, close to the town of Hoopa. 1341 Comment
  HSC76039  Polygonum douglasii Overton, Butler 1979-8-2 12577 Humboldt Near Bret Hole, close to the town of Hoopa 1554 Comment
  SEINET3405797 Image available Polygonum douglasii Joseph P. Tracy 1932-7-11 10399 Humboldt Trinity Summit, open places at Corral Prairie 1585 Comment
  UC1225796  Polygonum douglasii subsp. douglasii Joseph P. Tracy 1947-8-24 17922 Humboldt on Box Camp Trail Trinity Summit 1676 Comment
  UC55509  Polygonum douglasii subsp. spergulariiforme Mrs. M. H. Manning 1900-1 Humboldt Hupa Comment
  UC1101205  Polygonum lapathifolium Malcolm A. Nobs and S. Galen Smith 1949-8-9 1232 Humboldt Town of Blue Lake; s side Comment
  HSC56172  Polygonum minimum G. L. Clifton, Griswold 1979-8-1 12065 Humboldt Near N Trinity Mtn., close to the town of Hoopa. 1798 Comment
  HSC57966  Polygonum minimum G. L. Clifton, Griswold 1979-7-31 11683 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1805 Comment
  UC672978  Polygonum phytolaccifolium Joseph P. Tracy 1936-7-7 16035 Humboldt Grouse Mountain 1524 Comment
  HSC48864  Polygonum polygaloides subsp. kelloggii Brad Klipfel 1973-6-10 57 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  JEPS79954  Polygonum polygaloides subsp. kelloggii Joseph P. Tracy 1935-7-28 14316 Humboldt Devil's Hole Trinity Summit (head) 1828 Comment
  CDA2926  Polygonum polystachyum T. C. Fuller 1961-9-27 7040 Humboldt Slope of bluff north above mouth of Redwood Creek, 1.5 miles west of Orick. 0 Comment
  UC175846  Polygonum punctatum Joseph P. Tracy 1912-10-20 3993 Humboldt Loleta Pond Northern Coast Ranges, Eel River Valley 15 Comment
  HSC33651  Polypodium californicum Margaret Weatherwax 1975-6-26 7 Humboldt Road from Korbel to Maple Creek, 2 mi. SW of Korbel Comment
  HSC45835  Polypodium californicum M. A. Baker 1977-2-3 163 Humboldt West end of Lamphere Rd., less than 1 mi. from sand dunes Comment
  SEINET3873592  Polypodium californicum Jerry Parker 1968-10-25 186 Humboldt Stable dunes south of Widow White Creek.; 0 Comment
  HSC1126  Polypodium glycyrrhiza R. D. Zortman 1963-5-5 35 Humboldt 5 mi. NE of Arcata, S of the Mad River, off Warren Creek Rd. 91 Comment
  SEINET200791 Image available Polypodium glycyrrhiza Joseph P. Tracy 1914-5-14 4429 Humboldt Fort Seward 122 Comment
  UC71485  Polypodium glycyrrhiza Mrs. M. H. Manning 1901-1 Humboldt Hupa Valley Comment
  UCD136882  Polypodium glycyrrhiza M. Wiesendanger 1928-4-7 902 Humboldt Redwood Highway, Lane's Redwood Flat, probably the Franklin K. Lane Grove. Comment
  HSC33653  Polypodium glycyrrhiza M. Wetherwax 1975-6-1 171 Humboldt Beside Korbel to Maple Creek rd. 2 mi. SW of Korbel Comment
  UC404748  Polypodium glycyrrhiza H. E. Parks June 1924 2837 Humboldt Lawrence Creek Comment
  CAS-BOT-BC72088  Polypodium scouleri John Thomas Howell 1954-4-25 29159 A Humboldt Trinidad Head Comment
  HSC39949  Polypodium scouleri Linda M. Barker 1976-3-11 1327 Humboldt 3 mi. W of Arcata Comment
  UCD136910  Polypodium scouleri Linda M. Barker 1976-3-11 1327 Humboldt Coastal forest and dunes 3 miles west of Arcata. Comment
  UCSB26619  Polypodium scouleri Havlik, Neil 1968-8-21 Humboldt Samoa, west of Eureka 9 Comment
  CAS-BOT-BC232595  Polypogon monspeliensis Henry M. Pollard 1948-7-21 s.n. Humboldt Bank of Klamath River near Orleans Comment
  HSC38498  Polypogon monspeliensis R. Sutherland 1976-11-9 1 Humboldt Redwood Creek, Wittemore Grove. 82 Comment
  HSC38836  Polypogon monspeliensis R. Sutherland 1976-8-13 19 Humboldt Redwood Creek, Whittemore Grove. 87 Comment
  HSC91882  Polypogon monspeliensis E. Mackey 1986-5-13 Humboldt Patrick's Point State Park. By Wedding Rock. Comment
  RSA46871  Polypogon monspeliensis Doris K. Kildale 1927-6-25 3546 Humboldt Shelter Cove. Comment
  UC34073  Polypogon monspeliensis J. P. Tracy 1901-7-24 1217 Humboldt immediate vicinity Eureka 0 Comment
  UCD91265  Polypogon monspeliensis Harley P. Chandler 1901-6-1 1431 Humboldt North Coast Ranges. Klamath River. 335 Comment
  UC1440055  Polystichum Danin & H. G. Baker 1960-9-2 663 Humboldt Bull Creek-Honeydew Rd. Comment
  HSC48478  Polystichum imbricans Brad Klipfel 1974-9-17 578 Humboldt Along ridge N of Horse Mtn. Comment
  UCD39987  Polystichum imbricans subsp. curtum Rodney Gale Myatt 1971-9-22 1198 B Humboldt Along Salmon River, southeast of Somes Bar, and northeast of Hoopa Reservation. 426 Comment
  HSC74743  Polystichum munitum Gail Newton 1981-8-6 2386 Humboldt Near Bug Creek 1125 Comment
  SDSU1640  Polystichum munitum Harvey 1938-8-13 2251 Humboldt Redwood Park. Comment
  HSC95887  Polystichum munitum Will Ferrand 2002-4-20 26 Humboldt 9 mi. E of int. of West End Rd. and Warren Cr. Rd. 67 Comment
  HSC98643  Polystichum munitum Cara Witte 2008-7-10 864 Humboldt Forest Service Road 4N06. 2 miles west of National Forest 1. 1195 Comment
  SEINET4555668 Image available Polystichum munitum Bassett Maguire, Ruth Maguire, C. B. Maguire 1934-6-8 15050 Humboldt Bolling Grove State Park. Comment
  JEPS33236  Polystichum scopulinum Lincoln Constance 1934-6-4 824 Humboldt S Fork Eel River Bull Creek Region Comment
  CAS-BOT-BC102907  Populus trichocarpa Doris K. Kildale 1926-8-8 2471 Humboldt Dyerville Bridge 45 Comment
  CAS-BOT-BC102908  Populus trichocarpa Doris K. Kildale; L. B. Kildale 1930-4-13 9571 Humboldt Bridgeville 289 Comment
  UC1196666  Populus trichocarpa Joseph P. Tracy 1922-10-8 6122 1/2 Humboldt Mad River at Blue Lake; Northern Coast Ranges, Mad River at Blue Lake 30 Comment
  BLMAR668  Potamogeton nodosus Jennifer Wheeler 2012-10-10 668 Humboldt Lacks Creek, Beaver Ridge Pond 914 Comment
  HSC90766  Potentilla anserina subsp. pacifica Gail Newton 1982-5-5 2519 Humboldt Elk River Wildlife Area, Eureka Comment
  HSC102525  Potentilla drummondii M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-28 1512 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1106 Comment
  JEPS47215  Potentilla gracilis Joseph P. Tracy 1932-7-10 10387 Humboldt wet meadow at Corral Prairie Klamath Mountains, Trinity Summit 1524 Comment
  UC492177  Potentilla gracilis Joseph P. Tracy 1932-7-10 10387 Humboldt wet meadow at Corral Prairie (Trinity Summit); Klamath Mountains, Trinity Summit 1524 Comment
  CAS-BOT-BC540160  Potentilla gracilis var. fastigiata Doris K. Kildale 1925-8-17 1232 Humboldt Trinity Summit - Waterdog Lake 1828 Comment
  UC154515  Potentilla gracilis var. gracilis Harley P. Chandler June, 1901 1390 Humboldt Hupa Indian Reservation North Coast Ranges, , Hupa Valley (Hupa Valley) 152 Comment
  UC1198695  Potentilla palustris Joseph P. Tracy 1912-10-20 3991 Humboldt borders Loleta Pond (s of Eureka); Northern Coast Ranges, Loleta Pond 15 Comment
  HSC34911  Prosartes hookeri Thomas W. Nelson, James Nelson 1975-5-24 1854 Humboldt McKeown Ranch, N of Dinsmore. Comment
  HSC15463  Prosartes hookeri D. E. Anderson 1965-5-1 3576 Humboldt On Bluff Creek Rd. 4-5 mi. W of junction with Hwy. 96 Comment
  CAS-BOT-BC517512  Prosartes smithii Alice Eastwood 1907-4-22 29 Humboldt Part Trinidad Comment
  HSC98985  Prunella vulgaris Cara Witte 2007-7-3 410 Humboldt Brays Opening on National Forest 1. 1/2 mile north of intersection with 4N38. 1392 Comment
  HSC44534  Prunella vulgaris subsp. lanceolata Brad Klipfel 1973-7-1 142 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  UC630493  Prunella vulgaris var. lanceolata H. E. and S. T. Parks July, 1937 24052 Humboldt Spruce Cove Trinidad; , Trinidad Comment
  OBI36664  Prunus emarginata David J. Keil 1983-7-2 17323 Humboldt Ca. 4 mi SE ofSR 299 along titlow Hill Rd below Horse Mtn Summit Rd Comment
  UC1198777  Prunus emarginata Joseph P. Tracy 1924-9-7 6860 Humboldt near Fortuna (Northern Coast Ranges); Northern Coast Ranges 60 Comment
  HSC40671  Prunus virginiana var. demissa Thomas W. Nelson, Jane P. Nelson 1976-7-1 2930 Humboldt Bench W of Lassic Park (Signal Peak) 1677 Comment
  UC1198780  Prunus virginiana var. demissa Joseph P. Tracy 1926-10-14 7814 Humboldt near the South Fork (Trinity River Valley); Northern Coast Ranges, Trinity River Valley 182 Comment
  CAS-BOT-BC357270  Pseudognaphalium microcephalum Hubert O. Jenkins 1943-8-1 s.n. Humboldt In dry rocky bed of Eel River, Richardson Grove Comment
  CAS-BOT-BC80121  Pseudotsuga menziesii Doris K. Kildale 1927-2-28 2990 Humboldt Bug Creek 853 Comment
  UCR246635  Pseudotsuga menziesii Dean Kelch, D. A. Weinstein 2007-7-25 07- 510 Humboldt North Coast Range, along Hwy 29 between Lord-Ellis Summit and Hwy 96 558 Comment
  HSC1589  Pseudotsuga menziesii var. menziesii Francis Winter 1960-5-7 Humboldt Samoa Peninsula 6 mi W of Arcata Comment
  HSC76290  Pseudotsuga menziesii var. menziesii Teresa Prendusi 1981-7-23 358 Humboldt Near Black Mountain. 890 Comment
  UC1222911  Psilocarphus oregonus Joseph P. Tracy 1949-8-11 18479 Humboldt 2 to 6 mi s Grouse Mt. (e of headwaters of Redwood Creek); Kinsey Ridge 1402 Comment
  CAS-BOT-BC361932  Psilocarphus tenellus Alice Eastwood; John Thomas Howell 1937-6-22 4711 Humboldt Near Harris Comment
  UC672932  Pterostegia drymarioides Joseph P. Tracy 1933-5-20 12226 Humboldt s point of cape; Cape Mendocino 3 Comment
  SEINET199671  Pteryxia terebinthina var. californica Joseph P. Tracy 1929-4-28 8549 Humboldt Trinity River Valley at Willow Creek. 152 Comment
  CAS-BOT-BC466035  Pyrola picta Milo S. Baker 1947-8-10 11908 Humboldt Near end of Forest Rd from Hoopa toward Trinity Summit 1371 Comment
  CAS-BOT-BC62629  Quercus chrysolepis T. Worley; M. Mill; F. Rosenthal 1985-5-10 59 Humboldt Grays Falls Campground 240 Comment
  HSC98518  Quercus chrysolepis Cara Witte 2008-8-6 1013 Humboldt Board Camp Mountain. Road to Tri Board Camp. 1486 Comment
  SEINET13953254 Image available Quercus chrysolepis R. Earing, C. Cavanaugh, C. Collins 1987-1 109 Humboldt Grays Falls campground approximately 10 miles E. of Willow Creek on highway 299 along the trinity river. Comment
  HSC97282  Quercus garryana M. Mesler 2007-6-25 766 Humboldt Trail to Mill Creek Lakes 1585 Comment
  UC1175127  Quercus garryana P. C. Everett and E. K. Balls 1959-10-24 23955 Humboldt 4.7 mi s from Bluff Creek (Hwy 96, from Orleans to Weitchpec) 121 Comment
  UC1196516  Quercus garryana Joseph P. Tracy 1935-10-6 14754 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  UC249714  Quercus garryana Joseph P. Tracy 1921-10-2 5965 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  UC403970  Quercus garryana Joseph P. Tracy 1924-10-12 6915 1/2 Humboldt near The South Fork; Northern Coast Ranges, Trinity River Valley 182 Comment
  UC535734  Quercus garryana Eleanor Armstrong 1934-6-15 1132 Humboldt Richardson Grove 121 Comment
  HSC102091  Quercus garryana var. breweri M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 994 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  HSC99122  Quercus garryana var. garryana Cara Witte 2008-9-13 1041 Humboldt Forest Service Road 4N38. 1/2 mile south of intersection to Tri Board Camp. 1506 Comment
  HSC75961  Quercus sadleriana Overton, Butler 1979-8-2 12593 Humboldt Near Bret Hole, close to the town of Hoopa 1554 Comment
  UCD47238  Quercus sadleriana Gilbert Jerome Muth 1972-8-15 1845 Humboldt Near Big Hill Road, Humboldt County, California. Hoopa Quad. 167 mm from bottom margin, 258 mm from left margin. SLID No. 6941, Herb Acc No. 00011257. 1431 Comment
  CAS-BOT-BC104540  Quercus vacciniifolia Henry M. Pollard 1946-9-2 s.n. Humboldt Orleans Mt. 1524 Comment
  HSC55168  Quercus vacciniifolia Gilbert Muth 1979-8-1 12162 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1677 Comment
  HSC98847  Quercus vacciniifolia Cara Witte 2008-7-11 867 Humboldt Horse Mountain Botanical Area. National Forest 1. 1/2 mile west of intersection with Forest Service Roads 6N38 and 6N36. 1426 Comment
  UC1196529  Quercus vacciniifolia Joseph P. Tracy 1949-8-26 18526 1/2 Humboldt 2 mi e Grove's Prairie; North Coast Ranges, Trinity Summit 1524 Comment
  JEPS55034  Ranunculus alismifolius var. alismellus W. L. Jepson July, 1902 2106 Humboldt Trinity Summit 2133 Comment
  UC1103005  Ranunculus aquatilis var. capillaceus Joseph P. Tracy 1936-6-17 14951 Humboldt Buck Mountain; lower foothills of nw slope 762 Comment
  UC13903  Ranunculus aquatilis var. hispidulus W. C. Blasdale 1896-6-7 Humboldt Grahams Comment
  UC668067  Ranunculus aquatilis var. hispidulus Joseph P. Tracy 1935-5-25 13882 Humboldt Dobbyn Creek; bed of dried-up pond 152 Comment
  UC1103018  Ranunculus arvensis Joseph P. Tracy 1940-5-17 16554 Humboldt Buck Mountain; lower foothills of nw slope 762 Comment
Read comments
Jun 18 2011
  SEINET13716688  Ranunculus californicus Unknown 1910-5-8 3132 Humboldt Immediate vicinity of Eureka Comment
  SEINET516271  Ranunculus californicus Vernon H. Oswald 1998-4-16 8912 Humboldt Elk Head, north end of Trinidad State Beach. 30 Comment
  HSC18144  Ranunculus californicus var. californicus T. M. Mingo May 1965 Humboldt W of Fairhaven Dr. intersection with Hwy. 101 Comment
  UC1103011  Ranunculus flammula J. P. Tracy 1901-5-12 1080 Humboldt immediate vicinity of Eureka 0 Comment
  UC183673  Ranunculus flammula Joseph P. Tracy 1912-7-24 3810 Humboldt Eureka Northern Coast Region 0 Comment
  JEPS55018  Ranunculus flammula Milo S. Baker 1923-7-15 9 Humboldt near Hayes and M. Streets; Eureka swamps Comment
  POM269622  Ranunculus flammula var. ovalis Joseph P. Tracy 1934-7-13 13390 Humboldt Dow's Prairie Comment
  HSC71056  Ranunculus occidentalis Thomas W. Nelson, Jane P. Nelson 1977-5-30 3390 Humboldt McKeown Ranch. Along road to Anderson's Ford. 854 Comment
  HSC79336  Ranunculus occidentalis D. H. Norris 1970-5-20 12178 Humboldt Crest of Big Hill Rd. E of Hoopa Comment
  UC1196222  Ranunculus occidentalis Joseph P. Tracy 1918-5-1 4912 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  UC13974  Ranunculus occidentalis Chesnut and Drew 1888-7-9 Humboldt Campbell Comment
  HSC18163  Ranunculus occidentalis var. occidentalis E. W. Styskel 1963-5-19 36 Humboldt 3 mi. SE of Korbel, on Snow Camp Rd. 290 Comment
  HSC48638  Ranunculus occidentalis var. occidentalis Mark Flippo 1978-5-20 78 Humboldt USFS Rd. 8N10 Comment
  UCD97071  Ranunculus parviflorus John Thomas Howell 1954-4-25 29153 Humboldt Arcata. Comment
  JEPS5881  Ranunculus repens Joseph P. Tracy 1938-5-8 15740 Humboldt 4 mi e Carlotta 30 Comment
  UCD97080  Ranunculus repens Linda M. Barker 1976-6-1 1555 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  UC1199217  Raphanus sativus J. P. Tracy 1906-4-29 2427 Humboldt immediate vicinity of Eureka 0 Comment
  HSC12337  Raphanus sativus Steve Dorei 1970-10-26 115 Humboldt Arcata, South G st. Comment
  UC668157  Rhamnus californica Joseph P. Tracy 1934-7-9 13358 Humboldt Dobbyn Creek 152 Comment
  UC902203  Rhamnus californica Joseph P. Tracy 1946-7-13 17616 Humboldt 5 mi e Carlotta (open flat by old Strong's District School House) 60 Comment
  POM319213  Rhamnus purshiana Patricia Wilder 1968-8-21 4386 Humboldt Bog in Big Lagoon Park, just west of Hwy 101; Mt. Range: Coast range; Drainage Area: Big Lagoon to Pacific Ocean. 2 Comment
  SBBG5558  Rhododendron occidentale M. J. Cody 1938-7-14 Humboldt 2 mi N of Trinidad Comment
  UC22135  Rhododendron occidentale Harley P. Chandler June, 1901 1448 Humboldt Klamath River; North Coast Ranges, Klamath River 457 Comment
  CAS-BOT-BC200384  Rhododendron occidentale var. paludosum W. R. Dudley 1899-1-1 s.n. Humboldt Arcata Comment
  HSC7883  Rhododendron occidentale var. paludosum J. Pursell 1964-10-6 1062 Humboldt Big Lagoon Bog Comment
  HSC40828  Ribes binominatum Thomas W. Nelson, Jane P. Nelson 1976-7-26 3040 Humboldt Along ridge NW of Lassic Peak. 1707 Comment
  UC303169  Ribes divaricatum var. pubiflorum Joseph P. Tracy 1925-3-15 6943 Humboldt Blue Slide Northern Coast Ranges, Van Duzen River 91 Comment
  CAS-BOT-BC168853  Ribes inerme var. klamathense Joseph P. Tracy 1937-4-3 15243 Humboldt Trinity River Valley, at Willow Creek 152 Comment
  HSC70894  Ribes inerme var. klamathense J. M. DiTomaso 1981-5-15 2000 Humboldt Larabee Valley, 10 mi. E of Bridgeville on Hwy. 36 Comment
  HSC102026  Ribes lacustre M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-12 927 Humboldt Along trail from Rustic Camp to Patterson Meadows 1534 Comment
  HSC99361  Ribes lacustre K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-6-24 10 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  UC1586907  Ribes lacustre Juha Pykala and D. H. Norris 1987-6-11 1589 Humboldt s North Trinity Mountain (w of Crogan Hole); North Trinity Mountain Wilderness Area 1550 Comment
  HSC20327  Ribes lobbii Francis Winter 1960-5-7 Humboldt NE end of Arbor Camp Ridge 915 Comment
  HSC74199  Ribes lobbii M. A. Baker 1980-7-22 3071 Humboldt Near Salmon Mtn. 1820 Comment
  JEPS48559  Ribes lobbii Hilda W. Grinnell 1932-7-9 7 Humboldt below Camp McKay; So. Fork Mt. 1584 Comment
  JEPS49360  Ribes lobbii Jos. P. Tracy 1913-6-17 4189 Humboldt near summit Buck Mt. Comment
  UC492202  Ribes lobbii Joseph P. Tracy Jul 16 1930-Jul 19 1930 8907 Humboldt near McKay Camp; Northern Coast Ranges, South Fork Mountain 1676 Comment
  UC902100  Ribes lobbii Joseph P. Tracy 1949-6-5 18298 Humboldt ne Hawkins Bar; Trinity Summit Range, Happy Camp Mountain 1280 Comment
  CAS-BOT-BC212477  Ribes marshallii Joseph P. Tracy 1932-7-15 10592 Humboldt Ridges east of Corral Prairie, Trinity Summit, Klamath Mountains 1828 Comment
  CAS-BOT-BC212478  Ribes marshallii Doris K. Kildale 1925-8-18 1204 Humboldt Trinity Summit 1917 Comment
  CSUSB1882  Ribes menziesii Keith Thompson 1972-3-27 Humboldt Maple Cr. 853 Comment
  HSC20314  Ribes menziesii E. W. Styskel 1963-3-3 3 Humboldt 3 mi. SE of Korbel on Snow Camp Rd. 290 Comment
  HSC34640  Ribes menziesii J. M. Sauser 1975-4-9 2 Humboldt Old Arcata Rd., 2 mi. S of junction with Jacoby Creek Rd. Comment
  UC552231  Ribes menziesii Joseph P. Tracy 1933-5-20 12268 Humboldt near Petrolia; North Coast Ranges, Mattole Valley 15 Comment
  HSC103114  Ribes nevadense M. Mesler, Jen Kalt 2010-8-6 839 Humboldt Trail to Trinity Summit from Water Dog Lakes (6E08, Horse Ridge National Recreation Trail) 1833 Comment
  SEINET3825262 Image available Ribes nevadense Joseph P. Tracy 1932-7-18 10716 Humboldt Head of Brett Hole 1829 Comment
  CAS-BOT-BC212653  Ribes nevadense W. R. Dudley 1901-8-25 s.n. Humboldt Near the 14 mile post, Salmon Creek, Salmon Mountains Comment
  HSC71590  Ribes roezlii M. A. Baker 1980-6-26 2397 Humboldt Near Sims Creek 610 Comment
  JEPS49190  Ribes roezlii Joseph P. Tracy 1923-3-17 6159 Humboldt Garberville Northern Coast Ranges 121 Comment
  BLMAR391  Ribes roezlii var. cruentum Jennifer Wheeler 2005-4-22 391 Humboldt Lacks Creek, Near road just befor 100 acre field 853 Comment
  UC902081  Ribes roezlii var. cruentum Joseph P. Tracy 1949-7-19 18378 Humboldt Grouse Mountain 1280 Comment
  UC1222367 Image available Ribes sanguineum Joseph P. Tracy 1950-5-7 18649 Humboldt head South Yager River Comment
  HSC95681  Ribes sanguineum var. glutinosum Steven Lee 2004-3-23 4 Humboldt Manila Dunes along Samoa Blvd., 200ft W of first powerline in parking area along Gun Club Rd. Comment
  BLMAR270  Ribes sanguineum var. sanguineum Jennifer Anthony-Wheeler 1999-7-30 270 Humboldt Lacks Creek, growing in Hupa mt quad 1219 Comment
  HSC103209  Ribes viscosissimum Jade Paget-Seekins 2010-6-30 32 Humboldt Grouse Mountain on Forest Route 1 at the fork with Grouse Mountain Road. 1578 Comment
Read comments
Mar 8 2016
  JEPS48557 Image available Ribes viscosissimum Hilda W. Grinnell 1932-7-9 6 Humboldt below McKay Camp; So. Fork Mt. Comment
  UC1199219  Rorippa curvisiliqua Harold E. Parks and Joseph P. Tracy 1935-6-16 11275 Humboldt lower nw slopes Buck Mountain; lower nw slopes Buck Mountain 792 Comment
  UC492263  Rorippa curvisiliqua Joseph P. Tracy 1931-9-7 9667 Humboldt Trinity River Valley at Willow Creek; Northern Coast Ranges, Trinity River Valley 152 Comment
  CAS-BOT-BC74509  Rorippa curvisiliqua Malcom A. Nobs; S. Galen Smith 1949-8-9 1238 Humboldt On southern side of the town of Blue Lake. Comment
  POM312447  Rorippa curvisiliqua Malcolm A. Nobs, S. Galen Smith 1949-8-9 1238 Humboldt Marshy pond on south side of the town of Blue Lake. Comment
  SD88394  Rorippa nasturtium-aquaticum Darley F. Howe 1972-5-6 Humboldt 1.5 miles north of Phillipsville. 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
  HSC99055  Rorippa palustris subsp. occidentalis Cara Witte 2008-6-18 740 Humboldt Mud Lake. Off National Forest 1, near Buck Flat. 1569 Comment
  UC161000  Rosa Joseph P. Tracy 1911-7-7 3410 Humboldt 3 mi nw junction of Willow Creek with Trinity River (near Beebe's Ranch); Northern Coast Ranges 914 Comment
  UC902157  Rosa Joseph P. Tracy 1947-6-5 17814 Humboldt near Box Camp; Trinity Summit 1524 Comment
  CAS-BOT-BC147436  Rosa californica L. R. Abrams 1918-6-16 7161 Humboldt Willow Creek Comment
  HSC19619  Rosa canina D. E. Anderson 1965-5-15 3700 Humboldt 5 mi. N of Hoopa on Bald Hills Rd. 198 Comment
  HSC19645  Rosa canina Francis Winter 1960-4-24 Humboldt 1 mi. S of Hoopa Indian Reservation along Hoopa-Willow Creek Hwy. 152 Comment
  CAS-BOT-BC146481  Rosa gymnocarpa Alice Eastwood; John Thomas Howell 1937-6-22 4715 Humboldt Near Harris Comment
  HSC49926  Rosa gymnocarpa Maralyn O'Meara 1974-7-11 540 Humboldt Kneeland; Barry Ridge Comment
  UC162330  Rosa gymnocarpa Joseph P. Tracy 1911-7-7 3428 Humboldt Brannan Mountain Northern Coast Ranges (viz ridge n of Willow Creek, between Willow and Campbell Creeks, near summit) 1219 Comment
  CAS-BOT-BC146832  Rosa nutkana Alice Eastwood; John Thomas Howell 1937-6-23 4768 Humboldt Near Dinsmore's Comment
  SEINET11910997  Rosa nutkana F. H. Utech 1986-1 86 -392 Humboldt ca 5 mi N on Kings Peak Road, from junction with Shelter Cove Road, near Tolkan Recreation Area 480 Comment
  JEPS45642  Rosa nutkana var. nutkana Joseph P. Tracy 1923-6-22 6345 Humboldt Angels Ranch Bald Mt.; Northern Coast Ranges, Bald Mt. 457 Comment
  UC588191  Rosa nutkana var. nutkana H. E. and S. T. Parks June, 1937 24021 Humboldt Spruce Cove Trinidad Comment
  UCR121766  Rubus discolor George K. Helmkamp, E. A. Helmkamp 2001-7-8 7002 Humboldt North Coast, north spit of Samoa Peninsula, 0.5 mi north of CA Hwy 255 bridge over Humboldt Bay 6 Comment
  CAS-BOT-BC147244  Rubus parviflorus Doris K. Kildale 1926-3-26 1635 Humboldt Old Kneeland Road 609 Comment
  POM271063  Rubus parviflorus Lyman D. Benson 1928-7-8 387 Humboldt Weott Ranger Station. Seaward N Coast Mt. Range, S Fork Eel River. 61 Comment
  RSA201873  Rubus parviflorus Geo. Parrish 1930-5-21 s.n. Humboldt Trinidad. Comment
  UC666862  Rubus parviflorus Joseph P. Tracy 1933-6-7 12524 Humboldt Bridgeville 198 Comment
  UC1281057  Rubus spectabilis H. E. McMinn 1931-6-28 2545 Humboldt Orich Requa; Orich to Requa Comment
  CAS-BOT-BC158793  Rubus ursinus Kenneth Clark 1980-6-14 683 Humboldt Upper alluvial terrace of north fork Dead Man's Gulch, Shelter Cove 106 Comment
  CDA26338  Rubus ursinus Gordon Leppig 1998-5-11 762 Humboldt Northern California Peatlands; Big Lagoon County Park. Big Lagoon Bog. Comment
  HSC79483  Rubus ursinus Kenneth Clark 1980-3-24 547 Humboldt Shelter Cove, N fork of Deadman's Gulch 69 Comment
  RSA183575  Rubus ursinus R. I. Bonn 1965-4-23 19 Humboldt 4 miles W of Arcata on Lanphere Rd. Comment
  UC154255  Rubus ursinus J. P. Tracy 1904-7-31 2133 Humboldt immediate vicinity Eureka; immediate vicinity of Eureka 0 Comment
  RSA167402  Rudbeckia occidentalis Joseph P. Tracy 1948-9-12 18204 Humboldt Box Camp; Trinity Summit. 1463 Comment
  HSC17577  Rumex acetosella Norman H. Moe 1962-3-21 Humboldt Lanphere's Place Comment
  HSC55223  Rumex acetosella Walter Overton 1979-8-1 12397 Humboldt Near Mill Creek, Middle Fork, close to the town of Hoopa. 1341 Comment
  HSC17609  Rumex conglomeratus C. B. Wolf 1927-8-30 1231 Humboldt 2 mi. S of Petrolia on the Matole River near the road crossing the river Comment
  HSC39980  Rumex crispus Linda M. Barker 1976-6-22 1622 Humboldt 3 mi. W of Arcata Comment
  UC162326  Rumex crispus Joseph P. Tracy 1911-7-7 3375 Humboldt 3 mi nw Willow Creek and Trinity River junction (near Beebe's Ranch); Northern Coast Ranges 914 Comment
  CAS-BOT-BC433648  Rumex obtusifolius Alice Eastwood 1921-7-21 10656 Humboldt Carlotta Comment
  CAS-BOT-BC433647  Rumex obtusifolius Henry M. Pollard 1943-8-1 s.n. Humboldt Orleans Comment
  CAS-BOT-BC433704  Rumex occidentalis Doris Kildale Gillespie 1931-6-7 10651 Humboldt South Fork Mt., Blake Lookout 1726 Comment
  UC672927  Rumex occidentalis Joseph P. Tracy 1936-6-3 14854 Humboldt near Lack Pond; Trinity River Valley, Willow Creek 152 Comment
  UC722995  Rumex salicifolius var. crassus C. L. Hitchcock and J. S. Martin 1939-7-14 5438 Humboldt Shelter Cove Comment
  HSC95362  Rumex salicifolius var. transitorius Andrea Pickart 2002-8-8 200 Humboldt Arcata bottoms, Lanphere Rd. near end 20 Comment
  HSC98929  Rupertia physodes Cara Witte 2007-6-14 280 Humboldt Along National Forest 1 on Kinsey Ridge. 1/2 mile north of White Oak Opening. 1258 Comment
  JEPS79973  Sagina maxima subsp. crassicaulis Joseph P. Tracy 1940-5-18 16564 Humboldt Trinidad 15 Comment
  HSC93476  Salicornia depressa Gordon Leppig 1998-8-6 995 Humboldt Arcata Marsh and Wildlife Sanctuary; Humboldt Bay side of Klopp Lake dike 2 Comment
  CAS-BOT-BC129885  Salix bonplandiana Mrs. H. P. Bracelin 1931-5-1 272 Humboldt Sylvandale, between Miranda and Meyers, South Fork of Eel River Comment
  CAS-BOT-BC129893  Salix bonplandiana Joseph P. Tracy; Harold E. Parks 1942-5-16 11567 Humboldt Vicinity of Garberville 152 Comment
  CHSC9646  Salix exigua E. L. Smith 1971-8-17 1017 Humboldt On the Van Duzen River ca. 18 mi s of Eureka. Comment
  HSC19946  Salix exigua var. hindsiana C. R. Ball, H. E. Parks, J. P. Tracy 1932-5-17 1332 Humboldt Trinity River, near bridge on Trinity Hwy. 152 Comment
  RSA0038361  Salix hindsiana var. leucodendroides Harold E. Parks 1931-8-25 01061 Humboldt Blue Slide, Van Duzen River. 90 Comment
  CAS-BOT-BC107710  Salix hookeriana L. R. Abrams 1916-7-18 6127 Humboldt Arcata to Trinidad Comment
  CAS-BOT-BC107726  Salix hookeriana Harold E. Parks; Carleton R. Ball; Joseph P. Tracy 1932-5-11 1210 b Humboldt Little River Lagoon, 4 1/2 miles south of Trinidad Comment
  CHSC9654  Salix hookeriana E. L. Smith 1971-8-18 1025 Humboldt Clam Beach County Park ca. 6 mi s of Trinidad. Comment
  HSC19967  Salix hookeriana J. R. Woodside 1963-2-17 45 Humboldt 1.25 mi. N of Fairhaven Comment
  HSC38177  Salix hookeriana Thomas W. Nelson 1976-3-5 3285 Humboldt Beside Martin's Slough just upstream from Eureka Muni Golf Course Comment
  HSC90437  Salix hookeriana Jean Hanson 1980-3-8 15 Humboldt Indian (Gunther) Island, Humboldt Bay, Eureka, W end of island Comment
  JEPS38443  Salix hookeriana J. P. Tracy 1906-4-12 2401 Humboldt Immediate vicinity of Eureka 0 Comment
  LA208762  Salix hookeriana Harold E.; Susan T. 1932-4-7 1103 Humboldt Little River Lagoon, Trinidad; at sea level Comment
  POM184871  Salix hookeriana H. E. Parks, Susan T. Parks 1932-4-10 1103 -a Humboldt Little River Lagoon. Trinidad. At sea level. 0 Comment
  RSA152331  Salix hookeriana Joseph P. Tracy 1948-4-4 17958 Humboldt Near Samoa on Humboldt Bay. 6 Comment
  SBBG59113  Salix hookeriana H. E. Parks 1931-5-28 1000 Humboldt Little River Lagoon Comment
  SD938  Salix hookeriana Harold E. Parks 1931-5-28 1000 Humboldt Little River Lagoon 0 Comment
  UC176176  Salix hookeriana Joseph P. Tracy 1913-9-21 4413 Humboldt Humboldt Bay Northern Coast Region (dunes of ocean beach) Comment
  UC212999  Salix hookeriana Joseph P. Tracy 1920-2-29 5309 Humboldt Ryans Slough Northern Coast Ranges, around Humboldt Bay 15 Comment
  UC275502  Salix hookeriana Joseph P. Tracy 1925-2-15 6938 Humboldt Eureka Northern Coast Ranges, Eureka 60 Comment
  UC481263  Salix hookeriana Harold E. Parks 1931-5-28 999 Humboldt Little River Lagoon Comment
  UC512082  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
  UC512104  Salix hookeriana Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-11 1208 Humboldt 4 1/2 mi s Trinidad; Little River Lagoon Comment
  UC518899  Salix hookeriana Jim Davis 1933-4-25 4 Humboldt around Eureka Comment
  UC519333  Salix hookeriana Joseph P. Tracy 1933-5-20 12263 Humboldt Mattole R. near Petrolia; North Coast Region, Mattole R. 15 Comment
  RSA0034665  Salix hookeriana var. tomentosa Harold E. Parks 1931-5-12 0952 Humboldt Samoa, Humboldt Bay. 0 Comment
  UC519390  Salix laevigata Joseph P. Tracy 1933-10-15 13095 Humboldt near Miranda (S. Fork Eel R.); North Coast Ranges, S. Fork Eel R. 91 Comment
  UC176690  Salix lasiandra subsp. lasiandra Joseph P. Tracy 1913-6-20 4218 Humboldt Dinsmore's Ranch opposite Buck Mt.; Northern Coast Ranges, Van Duzen R. Valley 762 Comment
  UC481261  Salix lasiandra subsp. lasiandra Harold E. Parks 1931-5-20 991 Humboldt Blue Lake Mad R., Blue Lake 15 Comment
  UC492482  Salix lasiandra subsp. lasiandra Harold E. and Susan T. Parks 1932-5-12 1150 Humboldt swamp near bridge at mouth of Maple Creek (Big Lagoon); Big Lagoon Comment
  UC518902  Salix lasiandra subsp. lasiandra Jim Davis Apr 25 1933-Apr 27 1933 1 Humboldt around Eureka Eureka Comment
  CAS-BOT-BC107583  Salix lasiolepis Joseph P. Tracy; Carleton R. Ball; Harold E. Parks 1932-5-13 1254 Humboldt Floodplain of Mad River at Engelhart gravel pit, 2 miles east of Redwood Highway and above Blue Lake Road Comment
  CAS-BOT-BC107603  Salix lasiolepis Joseph P. Tracy; Harold E. Parks; Carleton R. Ball 1932-5-12 1236 Humboldt Gravelly floodplain of the Van Duzen River at Blue Slide 91 Comment
  CHSC96719  Salix lasiolepis Gordon Leppig 1999-4-15 1117 Humboldt Big Lagoon County Park, Big Lagoon Bog. On western edge of fen. NAD 27 UTM Zone 10, 405321E, 4557202N. 3 Comment
  JEPS12948  Salix lasiolepis Joseph P. Tracy 1932-3-6 9776 Humboldt at Willow Creek Trinity River Valley; Northern Coast Ranges, Trinity River Valley 152 Comment
  JEPS12966  Salix lasiolepis Joseph P. Tracy 1931-9-26 9695 Humboldt at Redwood Creek Berry's; Northern Coast Ranges 274 Comment
  SJSU222  Salix lasiolepis H. E. Parks 1931-5-14 963 Humboldt Van Duzen R between Alton & Carlotta 15 Comment
  UC1196625  Salix lasiolepis Joseph P. Tracy 1933-3-19 10930 1/2 Humboldt Blue Slide Northern Coast Ranges, Van Duzen River (on gravel bar) 91 Comment
  UC469435  Salix lasiolepis Joseph P. Tracy 1931-10-11 9718 Humboldt near mouth Willow Creek; Northern Coast Ranges, Trinity R. Valley, Willow Creek 152 Comment
  UC490467  Salix lasiolepis Joseph P. Tracy 1932-9-5 10768 Humboldt near Petrolia; North Coast Region, Mattole River 15 Comment
  UC490537  Salix lasiolepis Joseph P. Tracy 1932-7-18 10714 Humboldt head of Brett Hole; Klamath Mts., Trinity Summit 1828 Comment
  UC504021  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
  UC506343  Salix lasiolepis Joseph P. Tracy 1933-5-11 10932 Humboldt Blue Slide, on Van Duzen River 91 Comment
  UC506386  Salix lasiolepis Joseph P. Tracy 1932-6-19 10248 Humboldt Buck Mountain Northern Coast Ranges (nw slope, lower foothills) 762 Comment
  HSC20004  Salix lasiolepis J. P. Tracy 1932-6-19 10243 Humboldt North Coast Ranges; Buck Mountain, lower foothills of its northwest slope 762 Comment
  CAS-BOT-BC107404  Salix lasiolepis var. lasiolepis Doris K. Kildale 1926-3-28 1678 Humboldt Redwood Creek near Berry's 289 Comment
  HSC99455  Salix lucida subsp. lasiandra K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-7 107 Humboldt Near North Trinity Mtn, 11. 9 mi east of Hoopa on Big Hill Rd (8N01), at Box Camp, Six Rivers National Forest. 1372 Comment
  CAS-BOT-BC125616  Salix melanopsis W. R. Dudley 1899-6-21 s.n. Humboldt At the junction of the North and South forks of Eel River Comment
  CAS-BOT-BC125630  Salix melanopsis Harold E. Parks 1931-5-14 0965 Humboldt Van Duzen River between Alton and Carlotta 15 Comment
  JEPS12941  Salix melanopsis Joseph P. Tracy 1931-6-14 9580 Humboldt Van Duzen River Alton; Northern Coast Ranges 30 Comment
  JEPS14789  Salix melanopsis Joseph P. Tracy 1933-6-11 12551 Humboldt S. Fork Eel River near Miranda; Northern Coast Ranges 60 Comment
  UC1196571  Salix melanopsis Joseph P. Tracy 1932-7-31 10293 Humboldt Eel R. at mouth of Larrabee Creek; Northern Coast Ranges, Eel R. 60 Comment
  UC469454  Salix melanopsis Joseph P. Tracy 1931-9-7 9634 Humboldt Trinity R. Valley at Willow Creek Bridge; Northern Coast Ranges, Trinity R. Valley, Willow Creek 152 Comment
  UC55405  Salix melanopsis J. P. Tracy 1901-8-2 1242 Humboldt Van Duzen R. bar near Hydesville; Van Duzen R. 91 Comment
  UCR143008  Salix melanopsis H. E. Parks, J. P. Tracy 1931-5-17 0967 Humboldt North Coast, mouth of Willow Creek at Trinity River 150 Comment
  POM92416  Salix melanopsis L. R. Abrams 1922-6-25 8227 Humboldt 6 miles N of Garberville Comment
  NY284121  Salix parksiana H. E. Parks 1931-5-14 962 Humboldt Van Duzen River between Alton and Carlotta 15 Comment
  RSA0005850  Salix parksiana H. E. Parks 1931-5-14 962 Humboldt Van Duzen River between Alton and Carlotta. 15 Comment
  RSA0030801  Salix parksiana H. E. Parks 1931-5-14 0961 Humboldt Ban Duzen River between Alton and Carlotta 15 Comment
  CAS-BOT-BC129157  Salix scouleriana Joseph P. Tracy 1937-2-21 15230 Humboldt Van Duzen River, near Grizzly Creek 91 Comment
  CAS-BOT-BC129158  Salix scouleriana Joseph P. Tracy 1937-3-21 15238 Humboldt Van Duzen River, near Grizzly Creek 91 Comment
  CAS-BOT-BC129174  Salix scouleriana W. R. Dudley 1899-6-1 s.n. Humboldt Eureka Peninsula near R.R. Comment
  POM209564  Salix scouleriana H. E. Parks 1933-1-24 1352 Humboldt Spruce Grove (Parks Ranch). Trinidad. Comment
  UCR143482  Salix scouleriana H. E. Parks 1931-5-12 0955 Humboldt North Coast, Samoa, Humboldt Bay, near sea level 2 Comment
  CAS-BOT-BC128951  Salix sitchensis L. R. Abrams 1916-7-11 6047 Humboldt In river gravel, mouth of Grizzly Creek on Van Duzen River Comment
  HSC43418  Salix sitchensis R. Sutherland 1978-2-18 4 .18278 Humboldt S side Mattole River 8 Comment
  HSC79548  Salix sitchensis Kenneth Clark 1980-3-27 548 Humboldt Creek on W slope of Dead Man's Gulch 114 Comment
  HSC90465  Salix sitchensis Jean Hanson 1980-4-12 33 Humboldt Indian (Gunther) Island, Humboldt Bay, W end of island Comment
  HSC90747  Salix sitchensis Jean Hanson 1980-3-8 24 Humboldt Indian (Gunther) Island, Humboldt Bay, Eureka, W end of island Comment
  UC1196717  Salix sitchensis Joseph P. Tracy 1926-2-21 7357 Humboldt on Van Duzen R. Blue Slide; Northern Coast Ranges, Van Duzen R., Blue Slide 91 Comment
  UC469470  Salix sitchensis Joseph P. Tracy 1931-9-19 9683 Humboldt Van Duzen R. Alton; Northern Coast Region, , Alton 30 Comment
  UC506364  Salix sitchensis Joseph P. Tracy 1933-3-19 10930 Humboldt Van Duzen R. Blue Slide; Northern Coast Ranges, , Blue Slide 91 Comment
  SEINET4855902  Salix tracyi Unknown 1931-5-17 0976 Humboldt Mouth of Willow Creek at Trinity River. 150 Comment
  UC1222585  Salsola tragus Joseph P. Tracy 1950-8-20 19323 Humboldt 8 mi. below Orleans (Klamath R. near Slate Creek, at Big Bar); Klamath R. 121 Comment
  RSA21579  Sambucus caerulea C. B. Wolf 1937-9-8 9299 Humboldt North Coast Range, Bull Creek-Petrolia Road, Bull Creek, 6 miles west of Redwood Highway 183 Comment
  RSA303565  Sambucus callicarpa J. R. Shevock 1972-3-26 1472 Humboldt Along Highway 101, near Patrick Pt. 106 Comment
  SBBG25338  Sambucus nigra subsp. caerulea D. G. Forbes 1966-4-4 66 -432 Humboldt 1 mi N of Fresh Water Lagoon, US Hwy 101 30 Comment
  HSC59562  Sambucus racemosa var. racemosa Rick Lundquist 1979-4-6 3 Humboldt Arcata, SE Corner of 7th and Union St. 24 Comment
  HSC95577  Sanicula arctopoides Andrea Pickart 2002-3-14 7 Humboldt Samoa Dunes, BLM Endangered Plant Protection Area 0 Comment
  CAS-BOT-BC223252  Sanicula bipinnatifida M. S. Jussel 1931-5-2 s.n. Humboldt 6 miles from Garberville Comment
  HSC21619  Sanicula bipinnatifida Eldrid H. Spinas 1948-5-22 46 Humboldt Horse Mountain Comment
  UC183563  Sanicula bipinnatifida Joseph P. Tracy and Ernest B. Babcock 1912-5-11 3606 Humboldt near Hydesville (Northern Coast Region); Northern Coast Region 30 Comment
  JEPS1012  Sanicula graveolens W. L. Jepson July 16 - 23, 1902 2046 Humboldt Trinity Summit 2133 Comment
  UC1197095  Sanicula graveolens Joseph P. Tracy 1926-5-2 7448 Humboldt near Ruby Creek (Northern Coast Ranges, Willow Creek Canyon); Northern Coast Ranges, Willow Creek Canyon 609 Comment
  HSC21645  Sanicula tuberosa F. Morrell 1949-5-15 Humboldt Berry Summit Comment
  UC1988888  Saxifraga mertensiana Joseph P. Tracy 1927-3-27 7854 Humboldt near South Fork (Trinity River Valley along river); Northern Coast Ranges, Trinity River Valley 182 Comment
  HSC69628  Schoenoplectus acutus var. occidentalis R. Kalal 1980-5-4 31 Humboldt City of Arcata oxidation ponds 0 Comment
  HSC7443  Schoenoplectus americanus D. E. Anderson 1961-9-9 1792 Humboldt Along S end of Hwy. 101 causeway over Big Lagoon. Comment
  CAS-BOT-BC111703  Schoenoplectus pungens var. badius Carl B. Wolf 1927-8-22 795 Humboldt Big Lagoon Comment
  HSC100467  Scirpus atrovirens Carl C. Marshall May 1886 218 Humboldt Ditches etc. Comment
  UC1152056  Scirpus microcarpus Joseph P. Tracy 1950-8-7 19269 Humboldt meadow at Box Camp (Trinity Summit); , meadow at Box Camp 1463 Comment
  UC668009  Scirpus microcarpus Joseph P. Tracy 1933-7-25 12860 Humboldt Grouse Mountain 1524 Comment
  CAS-BOT-BC110925  Scirpus microcarpus Doris K. Kildale 1926-4-4 1735 Humboldt Trinidad Comment
  HSC23036  Scleranthus annuus D. E. Anderson 1964-1 Humboldt Along Mad River, 3 mi. S of Blue Lake Comment
  HSC101577  Scleranthus annuus subsp. annuus J. P. Smith, J. O. Sawyer 2010-5-8 12863 Humboldt Lawn and parking lot adjacent to the Dinsmore Airport 733 Comment
  CAS-BOT-BC361311  Scoliopus bigelovii Richard R. Halse 2013-3-28 8766 Humboldt Along U.S. Hwy. 101 ca. 2.2 miles S of Exit 671 to Pepperwood 76 Comment
  CAS-BOT-BC517416  Scoliopus bigelovii Elizabeth Parsons Hawver 1915-6-1 s.n. Humboldt Carlotta Comment
  CDA39390  Scoliopus bigelovii Q. L. Holdeman 1963-2-2 s.n. Humboldt West side of Highway 101, just north of Redcrest. 0 Comment
  SEINET12050495  Scoliopus bigelovii F. H. Utech 1988-1 88 -293 Humboldt 11 mi from Bridgeville on Bridgeville-Kneeland Road, along Yager Creek, SE of Lone Star Junction 775 Comment
  UCD124815  Scrophularia californica Linda M. Barker 1976-5-13 1473 Humboldt Lanphere-Christensen Dunes, 3 miles west of Arcata. Comment
  CHSC85574  Scutellaria antirrhinoides L. P. Janeway 2003-7-30 7940 Humboldt High North Coast Ranges. Cold Spring; 0.6 km north of the top of Titlow Hill. 1454 Comment
  UC1239705  Scutellaria antirrhinoides Joseph P. Tracy 1927-7-24 8296 Humboldt Mattole Valley 152 Comment
  UC154008  Scutellaria antirrhinoides Joseph P. Tracy 1908-6 2914 Humboldt nw slope of Buck Mountain; Northern Coast Ranges, Buck Mountain 1219 Comment
  UC1713599  Scutellaria antirrhinoides Joseph P. Tracy 1938-6-9 15875 Humboldt near Blocksburg (2 mi s of town) 304 Comment
  SD29268  Scutellaria californica Lincoln Constance 1934-6-27 936 Humboldt On south side of Eel River near its junction with the south fork, at end of railroad bridge, 0.5 mile northwest of s. fork P. O. and R. R. Station. Comment
  RSA183621  Scutellaria tuberosa D. E. Anderson 1965-5-8 3644 Humboldt About 2 miles north of Willow Creek on road running along east side of Trinity River. Comment
  UC1239711  Scutellaria tuberosa Joseph P. Tracy 1939-5-14 16296 Humboldt along Van Duzen River (Dinsmore's); , Dinsmore's 746 Comment
  HSC103086  Sedum laxum subsp. flavidum Sydney Carothers 2014-6-22 8 Humboldt Six Rivers National Forest, Lassics Botanical Area; on saddle between Peak 1 and Mt. Lassic 1796 Comment
  HSC59360  Sedum laxum subsp. heckneri M. A. Baker 1979-6-28 946 Humboldt NE side near summit of Packsaddle Ridge just N of the most E tip of the N fork of Mill Creek Comment
  HSC59359  Sedum obtusatum subsp. retusum M. A. Baker 1979-6-28 945 Humboldt 1500 Comment
  HSC65853  Sedum radiatum Gail Newton 1980-6-28 736 Humboldt Near Mad River Butte. 1536 Comment
  HSC97172  Sedum radiatum Erin Lonergan, Benjamin Hart 2007-6-11 7 Humboldt 14.1 mi. S of Hwy. 299 on FS Rd. NF1 1524 Comment
  UC14456  Sedum radiatum Chesnut and Drew August, 1888 Humboldt Comment
  CAS-BOT-BC59127  Sedum spathulifolium Henry M. Pollard 1948-7-28 s.n. Humboldt River road near Orleans Comment
  JEPS48063  Sedum spathulifolium W. L. Jepson 1902-6-20 1908 Humboldt Hubbard's Station to Main Eel River; Hubbard's Station to Main Eel River Comment
  RSA0074769  Sedum spathulifolium F. W. Peirson 1923-7-11 3957 Humboldt About 12 miles S of Orick. Comment
  UC1198844  Sedum spathulifolium Joseph P. Tracy 1944-8-13 17490 Humboldt along Trinity Highway Willow Creek Canyon (rock bluffs at Romanzoffia Creek); Romanzoffia Creek, Willow Creek Canyon 365 Comment
  HSC76352  Sedum spathulifolium var. spathulifolium Denis Kearns 1981-7-23 380 Humboldt Near Whiteys Peak 732 Comment
  CAS-BOT-BC62180  Selaginella oregana Doris K. Kildale 1926-1-24 1492 Humboldt Kneeland Prairie summit 853 Comment
  OBI79041  Selaginella rupestris Joseph P. Tracy 1920-10-24 5407 Humboldt Near Korbel, in dense shade. 61 Comment
  HSC45580  Senecio integerrimus Diane L. Reed 1978-4-22 16 Humboldt Tish Tang Campground, 5 mi. N of Willow Creek on Hwy. 96 Comment
  HSC70329  Senecio integerrimus M. A. Baker 1980-6-8 1884 Humboldt Near Buck Flat. 1554 Comment
  HSC6156  Senecio integerrimus var. major H. E. Parks, J. P. Tracy 1930-5-25 879 Humboldt Laribee Valley 762 Comment
  HSC98958  Senecio integerrimus var. major Cara Witte 2008-7-28 950 Humboldt Spike Buck Mountain. Forest Service Road 5N18. 1/2 mile from intersection with National Forest 1. 1565 Comment
  JEPS37229  Senecio integerrimus var. major W. L. Jepson 1902-7-16 2048 Humboldt Trinity Summit 2133 Comment
  UC128743  Senecio integerrimus var. major Harley P. Chandler 1086 Humboldt Harris North Coast Ranges 304 Comment
  UC1223155  Senecio integerrimus var. major Joseph P. Tracy 1950-5-6 18638 Humboldt Willow Creek Trinity River Valley 152 Comment
  JEPS109412  Senecio integerrimus var. ochroleucus D. W. Taylor 2004-6-24 19144 Humboldt Spike Buck Mountain, north slope. Comment
  UCD135598  Senecio minimus P. B. Kennedy 1925-8-29 s.n. Humboldt northeast Eureka. Comment
  CAS-BOT-BC364224  Senecio sylvaticus Alice Eastwood May 15 s.n. Humboldt Samoa Comment
  UC1199239  Senecio sylvaticus Joseph P. Tracy 1936-8-24 15172 Humboldt 6 mi se Arcata (Fickle Hill); Fickle Hill 609 Comment
  UCSC000817  Senecio sylvaticus H. L. Person 1932-7-18 s.n. Humboldt Eureka, Freshwater, Forest: T4NRIE Comment
  UC249833  Senecio triangularis Joseph P. Tracy 1924-7-4 6702 Humboldt Snow Camp , Snow Camp (Northern Coast Ranges) 1371 Comment
  UC581709  Senecio triangularis Joseph P. Tracy 1930-7-16 8934 Humboldt in wet meadow at McKay Camp (South Fork Mountain); , McKay Camp 1676 Comment
  HSC13034  Sequoia sempervirens T. C. DeCew 1970-11-14 44 Humboldt HSU Campus Comment
  HSC85743  Sequoia sempervirens R. W. Becking 1985-1-17 Humboldt HSU Campus, Hse. 87 Comment
  HSC98210  Sequoia sempervirens Gordon Leppig 1999-7-9 1189 Humboldt Big Lagoon County Park; Big Lagoon Bog 3 Comment
  RSA1501  Sequoia sempervirens E. R. Johnson 1929-08 1436 Humboldt Pacific Lumber Co., along the Eel River, Dyerville Comment
  RSA175208  Sequoia sempervirens Robert F. Thorne 1957-9-2 18996 Humboldt Burlington State Park, just S of Weott. Comment
  UC1222350  Sequoia sempervirens Joseph P. Tracy 1950-12-18 19387 Humboldt Parks's Place Trinidad, Parks' Place 3 Comment
  UC667965  Sequoia sempervirens Joseph P. Tracy 1935-12-8 14764 Humboldt near Korbel 304 Comment
  UCD19960  Sequoia sempervirens C. H. Lamoureux; R. Gankin 1956-3-17 1044 Humboldt Southern boundary of Jensen Grove, between Meyers and Miranda on Hwy 101. Comment
  UC1541655  Sherardia arvensis Harold E. Parks Jun 1935 4995 Humboldt Trinidad; Spruce Cove Comment
  UC502959  Sidalcea asprella Joseph P. Tracy 1928-6-24 8458 Humboldt between Bridgeville and head of Yager (South Yager Creek) 762 Comment
  UC902186  Sidalcea diploscypha Joseph P. Tracy 1948-5-31 18017 Humboldt Alder Point 152 Comment
  POM208991  Sidalcea diploscypha Lincoln Constance 1934-5-23 613 Humboldt Look Prairie, Bull Creek Watershed, Humboldt Redwood Park. 366 Comment
  UC1224688  Sidalcea malachroides D. E. Anderson 1963-5-26 2502 Humboldt in alluvial gravel beds along s side Jacoby Creek; along s side of Jacoby Creek Comment
  SEINET11982176  Sidalcea malachroides J. P. Tracy 1950-1 19034 Humboldt on Butter Valley Rd, 2 mi E of Cameron Hill Jct near Kneeland Comment
  BLMAR281  Sidalcea malviflora subsp. patula Jennifer Anthony-Wheeler 1999-5-28 281 Humboldt King range, growing along windy pt rd about 1/2 way to the spring exclosure 140 Comment
  JEPS109785  Sidalcea malviflora subsp. patula Dean W. Taylor 2005-6-10 19344 b Humboldt Branstetter Ridge, ca. 1 mile southeast along the ridge from Twin Peaks 701 Comment
  UC176964  Sidalcea malviflora subsp. patula Joseph P. Tracy and Ernest B. Babcock 1912-5-11 3596 Humboldt near Hydesville; Northern Coast Region, near Hydesville 30 Comment
  HSC57972  Sidalcea oregana subsp. eximia G. L. Clifton, Griswold 1979-7-31 11696 Humboldt Near the Trinity Summit Guard Station, close to the town of Hoopa. 1804 Comment
  UC668141  Sidalcea oregana subsp. eximia Joseph P. Tracy 1937-7-16 15432 Humboldt Dow's Prairie 60 Comment
  HSC103134  Silene bolanderi M. Mesler 2010-5-30 818 Humboldt Rd from Hwy 3 to Wildwood, near Gemmill Gulch 1003 Comment
  HSC103773  Silene bolanderi M. R. Mesler 2014-6-4 1635 Humboldt Burr Valley Road near Dinsmore 1049 Comment
  CAS-BOT-BC384547  Silene bridgesii Henry M. Pollard 1948-7-17 s.n. Humboldt Woods near Orleans Comment
  UC668100  Silene californica Joseph P. Tracy 1935-6-23 13997 Humboldt French Camp Ridge 1066 Comment
  CDA24094  Silene californica R. Spadoni 1992-6-15 Humboldt Along mad River east of Arcata, near Blue Lake, Redwood Valley. 0 Comment
  SD42480  Silene californica Carl B. Wolf 1937-6-18 8890 Humboldt Table Bluff, between Humboldt Bay and Eel River. 29 Comment
  HSC102130  Silene campanulata subsp. glandulosa M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 1034 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  JEPS22945  Silene campanulata subsp. glandulosa Volney Rattan 1883-1 Humboldt Hoopa Valley Comment
  UC13584  Silene campanulata subsp. glandulosa W. C. Blasdale 1896-6-8 Humboldt Mad River Comment
  POM257443  Silene gallica H. E. Parks, S. T. Parks 1936-06 5634 Humboldt Spruce Cove, Trinidad. Comment
  UC1198363  Silene gallica Joseph P. Tracy 1931-5-3 9352 Humboldt near Blue Lake (along Mad River); , near Blue Lake 15 Comment
  UCD98674  Silene gallica H. E. Parks; S. T. Parks 1937-5-1 5938 Humboldt Trinidad, Spruce Cove. Comment
  HSC68116  Silene laciniata subsp. californica J. P. Smith 1973-5-26 6819 Humboldt Scotia Bluffs along the Eel River near Rio Dell. Comment
  HSC44729  Silene laciniata subsp. californica Maralyn O'Meara 1972-6-8 78 Humboldt Along Bald Hills Rd, 16.4 mi. E of junction with Hwy. 101 Comment
  CAS-BOT-BC389880  Silene scouleri subsp. scouleri Joseph P. Tracy 1904-9-1 2141 Humboldt Northern Coast Region. At Eureka. On bluff back of Bucksport 60 Comment
  UC160974  Sisymbrium officinale Joseph P. Tracy 1908-6 2808 Humboldt Valley of Van Duzen River (opposite Buck Mountain); Northern Coast Ranges 762 Comment
  HSC89540  Sisymbrium officinale M. Roantree 1985-4-28 26 Humboldt E side of Trinidad Head, along dirt road Comment
  HSC62863  Sisyrinchium californicum J. M. DiTomaso 1979-5-20 1047 Humboldt Big Lagoon Park, 8 mi. N of Trinidad Comment
  HSC91874  Sisyrinchium californicum E. Mackey 1986-5-13 Humboldt Patrick's Point State Park Comment
  RSA311326  Sisyrinchium californicum Robert F. Thorne 1957-9-3 19018 Humboldt Patricks Point State Park. Comment
  RSA246758  Sisyrinchium californicum Robert F. Thorne, Percy C. Everett 1965-8-7 35177 Humboldt Big Lagoon, south end. 2 Comment
  JEPS62110  Smilacina racemosa Milo S. Baker 1923-7-31 150 Humboldt Lawrence Creek Comment
  UC1197799  Smilacina racemosa Joseph P. Tracy 1914-5-17 4474 Humboldt Cumens claim Northern Coast Region, region about Humboldt Bay (on ridge between Ryans Slough and Freshwater Creek) 304 Comment
  HSC69581  Solanum americanum R. Kalal 1980-6-8 15 Humboldt E of Clam Beach along slough 18 Comment
  UC750870  Solanum furcatum E. F. Paddock 1947-7-13 163 Humboldt Trinidad, near boat landing Trinidad Comment
  UC604645  Solanum umbelliferum Joseph P. Tracy 1938-6-7 15855 Humboldt 5 mi se of Blue Lake (Canyon Creek); Canyon Creek 152 Comment
  UC581770  Solidago elongata Joseph P. Tracy 1927-8-22 8346 Humboldt near High Prairie (Bald Mountain); Northern Coast Ranges, Bald Mountain 1066 Comment
  SEINET191265 Image available Solidago spathulata S. K. Harris 1939-9-5 990 Humboldt Samoa. Comment
  UC727178  Solidago spathulata A. A. Heller 1924-7-22 13872 Humboldt Samoa Comment
Read comments
Sep 29 2006
  CAS-BOT-BC364971  Solidago velutina subsp. californica Joseph P. Tracy 1937-9-5 15682 Humboldt Trinity River Valley, at Willow Creek 152 Comment
  UC466715  Sorbus scopulina Mrs. Manning 1900-1 Humboldt Mt. Hupa Trinity Summit Comment
  HSC83043  Spartina densiflora A. L. Eicher 1985-6-19 Humboldt Bordering Humboldt Bay, adjacent to the mouth of Mad River Slough, on SW side 1 Comment
  LA39194  Spartina foliosa W. A. Silveus; 1938-7-10 2966 Humboldt Eureka Comment
  CAS-BOT-BC389920  Spergula arvensis Doris K. Kildale 1925-12-6 1820 Humboldt Orick, near mouth of Redwood Creek Comment
  HSC79186  Spergula arvensis L. P. Janeway 1984-1-10 706 Humboldt HSU campus, N side of upper playing field 46 Comment
  HSC90751  Spergularia canadensis var. occidentalis Jean Hanson 1980-6-22 96 Humboldt Indian (Gunther) Island, Humboldt Bay, city of Eureka: W side of dike on NW side of island. Comment
  SJSU8458  Spergularia canadensis var. occidentalis H. T. Harvey 1977-7-6 614 Humboldt South Spit, Humboldt Bay Comment
  CDA18204  Spergularia macrotheca var. macrotheca G. D. Barbe, T. C. Fuller 1974-6-17 1830 Humboldt North Coast Ranges; Lower Pacific Drive, S of sewage plant, W of golf course, at Sail Court, Shelter Cove. 60 Comment
  HSC58185  Spergularia rubra G. L. Clifton, Griswold 1979-8-2 12273 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  CAS-BOT-BC149615  Spiraea douglasii Henry M. Pollard 1947-8-19 s.n. Humboldt Klamath River nr. Redcap Creek, Orleans region Comment
  UC1196405  Spiranthes porrifolia Joseph P. Tracy 1942-6-15 17154 Humboldt Garberville 152 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
  HSC27782  Spiranthes romanzoffiana J. D. Ackerman, A. Montalvo 1973-7-30 112 Humboldt Hwy. 101 between Arcata and Eureka, at Indianola Cutoff 3 Comment
  RSA245280  Spiranthes romanzoffiana J. D. Ackerman 1973-8-29 119 Humboldt Big Lagoon Beach Co. Park; 8 miles N of Trinidad. Comment
  UC672873  Spirodela polyrhiza Joseph P. Tracy 1932-8-21 10371 Humboldt w slope Chaparral Mt. (Three Cabins Ranch, on e side of Mad River) 457 Comment
  HSC59589  Spirodela punctata Rick Lundquist 1979-5-18 95 Humboldt Clam Beach Ponds 0 Comment
  SEINET5196066  Stachys ajugoides Unknown 2002-8-22 87 Humboldt Along Fischer Road 0.25mi N of the Mad River. Comment
  UCLA70846  Stachys ajugoides var. rigida Joseph P. Tracy 1934-7-18 13455 Humboldt Grouse Mountain North Coast Ranges 1615 Comment
  CDA41012  Stachys ajugoides var. rigida T. C. Fuller 1958-6-17 1716 Humboldt Wildcat Ridge near Bunker Hill. 0 Comment
  JEPS62955  Stachys ajugoides var. rigida W. L. Jepson 1932-8-8 16481 Humboldt head Canoe Creek; Grasshopper Peak 1066 Comment
  UCLA71110  Stachys ajugoides var. rigida C. Epling Aug 1933 Humboldt near Big Tree Comment
  HSC14416  Stachys mexicana D. E. Anderson 1961-8-11 1727 Humboldt E of Humboldt State College campus. 30 Comment
  HSC54596  Stachys rigida Overton, Butler 1979-7-24 9672 Humboldt Near Friday Camp, close to the town of Willow Creek. 1250 Comment
  UC161057  Stellaria borealis subsp. sitchana Joseph P. Tracy 1900-5-22 795 Humboldt Eureka; Northern Coast Region 0 Comment
  UC8638  Stellaria borealis subsp. sitchana Harley P. Chandler May 1901 1178 Humboldt Humboldt Bay; North Coast Ranges Comment
  POM160267  Stellaria crispa Joseph P. Tracy 1926-6-12 7586 Humboldt Prairie Creek Comment
  RSA168872  Stellaria crispa Joseph P. Tracy 1950-7-15 19042 Humboldt Moist ground under maple trees, Raccoon Creek, near mouth, 1 mile NE of Patterson s Ranch. Willow Creek vicinity. Comment
  HSC59653  Stellaria media Michael Dalke 1979-4-1 14 Humboldt 0.1 mi. E of Hwy. 101, N Bank Rd. 12 Comment
  UC1103547  Stellaria nitens Joseph P. Tracy 1918-5-1 4899 Humboldt Kneeland Prairie Northern Coast Ranges (Dan McBride place) 762 Comment
  UC1197797  Stenanthium occidentale Joseph P. Tracy 1948-9-5 18172 Humboldt ne of Hawkins Bar; Trinity Summit Range, Happy Camp Mountain 1280 Comment
  UC902035  Stenanthium occidentale Joseph P. Tracy 1949-8-26 18517 Humboldt ne of Hawkins Bar; Trinity Summit Range, Happy Camp Mountain 1280 Comment
  OBI22262  Stipa lemmonii Joseph P. Tracy 1938-6-17 15968 Humboldt Panther garp, on the road from Bull Crk to Upper Mattole 823 Comment
  HSC97388  Stipa lepida G. N. Bos 1965-5-15 279 Humboldt Berry Summit near Hwy. 299 Comment
  HSC58676  Stipa occidentalis var. californica Gilbert Muth 1979-8-1 12181 Humboldt Near Red Cap Prairie, close to the town of Hoopa 1780 Comment
  HSC57118  Streptanthus tortuosus Walter Overton, Marvin Butler 1979-7-25 9863 Humboldt Near Sims Mtn., close to the town of Willow Creek 1295 Comment
  HSC73750  Streptanthus tortuosus M. A. Baker 1980-7-15 2942 Humboldt Near Whiting Ridge. 1341 Comment
  RSA43850  Streptanthus tortuosus H. M. Pollard 1948-7-31 s.n. Humboldt Orleans Mountain 1677 Comment
  CHSC97958  Streptanthus tortuosus var. tortuosus Laurel Goldsmith; Wanda Naylor 2005-6-8 5 Humboldt 1.7 miles south of Hwy 299 on Titlow Hill Rd. UTM 0436141, 4525408. 980 Comment
  HSC32317  Streptanthus tortuosus var. tortuosus D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5655 Humboldt Senteney Rock, a large barren Franciscan Rock along Swayback Ridge. Comment
  HSC58158  Streptanthus tortuosus var. tortuosus G. L. Clifton, Terry Griswold 1979-8-2 12218 Humboldt Near Oregon Creek, close to the town of Hoopa 1663 Comment
  HSC100891  Streptopus amplexifolius Carl C. Marshall May 1886 191 Humboldt Jacoby Cr. Comment
  UC275556  Streptopus amplexifolius var. americanus Joseph P. Tracy 1923-6-24 6366 Humboldt near High Prairie (Bald Mountain); Northern Coast Ranges 1066 Comment
  UC169337  Symphoricarpos albus var. laevigatus Joseph P. Tracy 1908-6 2883 Humboldt opposite Buck Mountain (Valley of Van Duzen River); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  JEPS13646  Symphoricarpos mollis Lincoln Constance 1934-6-3 808 Humboldt road from High Rock to Horse Prairie (High Rock (on Redwood Hwy, 1 mi n of Dyerville)); South Fork Eel River, Bull Creek Region Comment
  CAS-BOT-BC99167  Symphyotrichum chilense L. R. Abrams 1927-9-1 12063 Humboldt unspecified Comment
  UC1222982  Symphyotrichum hendersonii Joseph P. Tracy 1941-8-24 17040 Humboldt near McKay camp; South Fork Mountain 1676 Comment
  UC198597  Symphyotrichum hendersonii Joseph P. Tracy 1917-9-1 4836 Humboldt Murphy Meadow Northern Coast Ranges, Bald Mountain 1066 Comment
  HSC44086  Symphyotrichum spathulatum var. spathulatum Thomas W. Nelson, Jane P. Nelson 1977-9-3 3726 Humboldt Along Creek draining, north from pond above Alder Spring 1585 Comment
  CDA5592  Symphytum asperum T. C. Fuller 1968-7-31 17449 b Humboldt 2 miles north of Arcata, Arcata Bottoms. 0 Comment
  UC1359832  Symphytum asperum Johnnie L. Gentry Jr. and Earl Jensen 1968-7-5 2120 Humboldt on Tompkins Hill Rd. s. of Eureka (ca. 2 mi. e. of Hwy. junction U.S. 101 and Tompkins Hill Rd.) 30 Comment
  UC213323  Symphytum asperum Joseph P. Tracy June 1919 5181 Humboldt Northern Coast Region, Humboldt Bay, valley of Salmon Creek 30 Comment
  HSC21149  Synthyris reniformis G. N. Bos 1965-5-2 247 Humboldt 8 mi. E of Korbel on Bald Mtn. Rd. 793 Comment
  HSC21152  Synthyris reniformis N. J. Cole, D. E. Anderson 1965-4-13 12 Humboldt 2.5 mi. SE of Maple Creek Rd. junction with Bald Mtn. Rd., SE of Korbel Comment
  HSC89432  Synthyris reniformis P. A. Daly 1984-5-8 11 Humboldt Trinidad Head 61 Comment
  JEPS9930  Synthyris reniformis Lincoln Constance 1934-6-15 882 Humboldt South Fork Eel River (Summit of Grasshopper Peak); Bull Creek Region 975 Comment
  CAS-BOT-BC376727  Tanacetum bipinnatum Doris K. Kildale 1925-7-2 912 Humboldt Table Bluff Comment
  HSC35858  Tanacetum bipinnatum Thomas W. Nelson, James Nelson 1975-8-5 2137 Humboldt Along south spit of Humboldt Bay ca. 1 mile N. of Table Bluff Comment
  CAS-BOT-BC376728  Tanacetum bipinnatum Peter H. Raven 1962-8-31 18078 Humboldt 1.2 miles south of Orrick [Orick] Comment
  HSC6249  Tanacetum bipinnatum R. L. Jarvis 1962-4-29 40 Humboldt Freshwater Lagoon, 1 mi. S of Orick on Hwy. 101 0 Comment
  SJSU5383  Tanacetum bipinnatum T. A. Fulton 1969-5-20 Humboldt strand of Stone Lagoon c. 3 mi SW of Orick Comment
  RSA21034  Tanacetum camphoratum C. B. Wolf 1937-6-18 8903 Humboldt Centerville Beach 3 Comment
  RSA18773  Tanacetum camphoratum P. A. Munz 1954-7-25 19869 Humboldt On sand dunes at Humboldt Lighthouse south of Samoa. Comment
  RSA246918  Tanacetum douglasii R. F. Thorne, Percy C. Everett 1965-8-5 35167 Humboldt Samoa Dunes. 3 Comment
  SBBG65852  Tanacetum vulgare R. Hartwell 1938-8-9 Humboldt near Eureka Comment
  JEPS36856  Taraxacum officinale Lincoln Constance 1934-6-12 864 Humboldt Bull Creek road and n bank of South Fork Eel River, Dyerville South Fork Eel River, Bull Creek Region, Dyerville Comment
  HSC34807  Taraxacum officinale Lon Hall 1975-4-4 293 Humboldt Arcata. In front of 1735 J St. 15 Comment
  UC1197330  Tauschia kelloggii Joseph P. Tracy 1926-4-11 7407 Humboldt Bridgeville; Northern Coast Ranges 228 Comment
  UC1197068  Tauschia kelloggii Joseph P. Tracy 1936-6-17 14943 Humboldt Bridgeville 198 Comment
  CAS-BOT-BC85217  Taxus brevifolia Doris K. Kildale 1929-2-12 6954 Humboldt Willow Creek Canyon Comment
  HSC89427  Tellima grandiflora P. A. Daly 1984-5-8 4 Humboldt Trinidad Head 61 Comment
  HSC99434  Tellima grandiflora K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-7 83 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-BC81306  Thuja plicata Doris K. Kildale 1927-5-13 3130 Humboldt Green Point, Redwood Creek road Comment
  RSA34287  Thuja plicata C. B. Wolf 1927-8-29 1192 Humboldt 7 miles south of Ferndale and Capetown, Bear River Ridge, Mt. Glen. Comment
  CAS-BOT-BC88318  Thysanocarpus curvipes Doris K. Kildale 1926-4-25 1803 Humboldt Willow Creek Flat. 152 Comment
  HSC97624  Thysanocarpus curvipes Cara Witte 2007-6-4 194 Humboldt Cold Spring. 0.5 mile S of Titlow Hill. 1386 Comment
  HSC63848  Tiarella trifoliata var. unifoliata M. A. Baker 1979-6-29 964 Humboldt Hopkin's Creek. 750 Comment
  HSC98749  Tiarella trifoliata var. unifoliata Cara Witte 2008-7-7 841 Humboldt National Forest Road 5N10. 2 miles south of intersection with Friday Ridge Road. Near waterhole sign. 1224 Comment
  UC303174  Tiarella trifoliata var. unifoliata Joseph P. Tracy 1923-6-20 6314 Humboldt White Thorn Valley; Northern Coast Ranges, White Thorn Valley 304 Comment
  JEPS49709  Tiarella trifoliata var. unifoliata W. L. Jepson 1927-7-3 12359 Humboldt near Dyerville (Bull Creek); South Fork Eel River, Bull Creek Comment
  HSC103111  Tofieldia glutinosa M. Mesler 2010-7-15 834 Humboldt Near Blake Mtn, FS rd N01 off rd 4N12 Comment
  HSC41012  Tonella tenella J. P. Smith, J. O. Sawyer 1976-5-2 8631 Humboldt Hoopa Reservation, 0.2 mi. W of junction with Loop Rd. along Redwood Creek-Hoopa Rd. 61 Comment
  SEINET6987681  Tonella tenella Wanda P. Vestal, A. G. Vestal 1937-6-23 s.n. Humboldt Near east end of Bald Hills, southeast of Orick. Comment
  HSC89478  Toxicodendron diversilobum P. A. Daly 1986-3-12 81 Humboldt Trinidad Head 61 Comment
  JEPS63934  Toxicodendron diversilobum W. L. Jepson 1902-7-10 2003 a Humboldt S. Fork Trinity R., Martin's Ranch Comment
  HSC86487  Tracyina rostrata Tom Duebendorfer 1988-6-13 882 Humboldt N of Alderpoint, take Blocksburg Rd. N., 0.15 mi. E on Stewart Ranch Rd. 210 Comment
Read comments
May 18 2010
  JEPS5769  Trautvetteria caroliniensis var. occidentalis Joseph P. Tracy 1937-7-25 15564 Humboldt ne of Hawkins Bar (in Trinity Summit Range, Happy Camp Mountain); Trinity Summit Range, Happy Camp Mountain 1280 Comment
  HSC97982  Triantha occidentalis subsp. occidentalis Cara Witte 2007-7-10 473 Humboldt Horse Mountain Botanical Area. Forest service Road 6N18. 1434 Comment
  JEPS63134  Trichostema lanceolatum Joseph P. Tracy 1916-9-6 4759 Humboldt Grasshopper Ridge, head of Canoe Creek Northern Coast Ranges 609 Comment
  UC577371  Trichostema laxum Joseph P. Tracy 1926-10-15 7815 Humboldt South Fork of Trinity River, mountain slopes W of mouth 304 Comment
  HSC17936  Trientalis latifolia D. E. Anderson 1965-5-8 3653 Humboldt About 3 mi. N of Willow Creek along rd. on E side of Trinity River. Comment
  RSA69006  Trientalis latifolia F. W. Peirson 1923-7-9 s.n. Humboldt first summit on road between coast and Eel River Comment
  UC906702  Trifolium albopurpureum var. dichotomum Harold E. Parks and Joseph P. Tracy 1942-5-16 11555 Humboldt vicinity Garberville 152 Comment
  JEPS65948  Trifolium albopurpureum var. dichotomum Joseph P. Tracy 1927-5-14 8007 Humboldt near South Fork; North Coast Ranges, Trinity River Valley 182 Comment
  UC1103435  Trifolium barbigerum J. P. Tracy 1900-6-5 847 Humboldt immediate vicinity Eureka Comment
  HSC45114  Trifolium ciliolatum R. Sutherland 1978-5-16 7 .16578 Humboldt 155 Comment
  UC249727  Trifolium depauperatum var. depauperatum Joseph P. Tracy 1921-5-30 5480 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  UC1223468  Trifolium dubium Joseph P. Tracy 1948-5-31 18024 Humboldt Blocksburg Comment
  UC198658  Trifolium dubium Joseph P. Tracy 1913-5-31 4699 Humboldt along Eel River (Holmes Flat, from South Fork to Scotia); Northern Coast Ranges 60 Comment
  RSA91498  Trifolium dubium F. W. Peirson 1923-7-11 3622 Humboldt 20 miles north of Eureka Comment
  UC495648  Trifolium eriocephalum var. eriocephalum Joseph P. Tracy 1930-6-21 8769 Humboldt Larrabee Valley Northern Coast Ranges 701 Comment
  UC1223461  Trifolium fragiferum Joseph P. Tracy 1937-7-20 15447 Humboldt mouth Mad River Comment
  UC16800  Trifolium fucatum J. Burtt Davy 1899-6-8 5356 Humboldt near Harris; North Coast Ranges Comment
  HSC100251  Trifolium incarnatum J. P. Smith, & J. O. Sawyer 2010-5-2 12808 Humboldt Along Hwy. 96, N of Orleans 140 Comment
  HSC15218  Trifolium macraei J. W. Johnson 1961-5-27 1386 Humboldt Arcata, Christenson Farm on the Samoa Peninsula Comment
  HSC35028  Trifolium microcephalum Thomas W. Nelson, Jane P. Nelson 1975-5-24 1846 Humboldt McKeown Ranch, N of Dinsmore. Comment
  HSC40939  Trifolium microcephalum Linda M. Barker 1976-6-1 1558 Humboldt Lanphere-Christensen Dunes, 3 mi. W of Arcata. Comment
  JEPS65952  Trifolium microcephalum W. L. Jepson 1936-8-17 17938 Humboldt near Arcata (Mad River) Comment
  UC1223351  Trifolium microdon Joseph P. Tracy 1938-6-8 15867 Humboldt near Samoa; Humboldt Bay 6 Comment
  HSC38634  Trifolium obtusiflorum D. E. Anderson, J. P. Smith 1971-6-28 - 1257 Humboldt 2.5 mi. S of Blue Lake along the Mad River Comment
  UC1197521  Trifolium obtusiflorum Joseph P. Tracy 1911-6-11 3241 Humboldt Trinidad Station Northern Coast Ranges 91 Comment
  JEPS4443  Trifolium oliganthum Joseph P. Tracy 1921-4-24 5438 Humboldt facing South Fork of Eel River (Phillipsville); Northern Coast Ranges 121 Comment
  UCSB30597  Trifolium pratense Edwards, David 1974-7-13 Humboldt North side of 7th St. just W. of its overpass of U.S. 101, Arcata 18 Comment
  RSA249709  Trifolium repens Robert F. Thorne, Percy C. Everett, K. Thorne 1965-8-8 35250 Humboldt N. edge of Eureka, E. of Hwy. 101 5 Comment
  UC303198  Trifolium variegatum var. rostratum Joseph P. Tracy 1925-6-27 7145 Humboldt Alton Northern Coast Ranges 30 Comment
  HSC15172  Trifolium willdenovii D. E. Anderson 1962-5-1 2191 Humboldt Junction of Redwood Creek Rd. and rd. to Hoopa Comment
  JEPS4167  Trifolium willdenovii W. L. Jepson 1902-6 1904 Humboldt Fort Seward Ranch Ridge = Mail Ridge 1219 Comment
  UC205468  Trifolium wormskioldii Joseph P. Tracy 1920-8-15 5379 Humboldt mouth of Bluff Creek Northern Coast Ranges (Klamath River) 152 Comment
  UC1223373  Trifolium wormskioldii Joseph P. Tracy 1950-6-8 18714 Humboldt 2 mi s Ferndale (near the Sand Cut, Wild Cat Rd) Comment
  UC725901  Trifolium wormskioldii A. A. Heller 1937-6-11 15891 Humboldt n Trinidad (Big Lagoon on US Hwy 101) Comment
  CAS-BOT-BC451803  Triglochin maritima Joseph P. Tracy 1933-8-22 12988 Humboldt Mouth of Eel River 3 Comment
  UC672871  Triglochin maritima Joseph P. Tracy 1934-7-20 13466 Humboldt Big Lagoon 3 Comment
  RSA226618  Triglochin maritima Norman Dennis 1965-6-8 101 Humboldt Salt marsh along east edge of Humboldt Bay, 1 mile south of Arcata Comment
  CAS-BOT-BC520052  Trillium albidum R. F. Freeman; J. D. Freeman 1967-5-7 581 Humboldt Humboldt County Comment
  UC1197808  Trillium albidum Joseph P. Tracy 1930-8-3 9152 Humboldt lower foothills of n.w. slope Buck Mt. 762 Comment
  HSC101808  Trillium kurabayashii Kjirsten A. Wayman 2012-4-1 304 Humboldt Hoopa, 0.3 miles up Bair Road, near Supply Creek 168 Comment
  HSC15697  Trillium ovatum D. E. Anderson 1962-3-18 1943 Humboldt Jacoby Creek Comment
  HSC96778  Trillium ovatum M. Mesler 2006-6-6 611 Humboldt Big Hill Rd. 11.4 mi. E of Hwy. 96 at Six Rivers Forest boundary 1463 Comment
  UC176189  Trillium ovatum Joseph P. Tracy 1913-3-9 4019 Humboldt near Hydesville Hydesville; Northern Coast Region 60 Comment
  HSC98910  Trillium ovatum subsp. ovatum Cara Witte 2007-5-31 164 Humboldt Buck Flat. Intersection of National Forest 1 and 5N01. 1547 Comment
  UC213508  Triodanis biflora J. P. Tracy 1919-4-27 5131 Humboldt sand hills of Ocean Beach at Samoa (opp. Eureka); Ocean Beach Comment
  SEINET10458968  Triodanis biflora Chesnut CHESNUT s.n. Humboldt KNEELAND, CAMPBELLS Comment
  HSC20858  Triphysaria eriantha Elrid H. Spinas 1948-6-16 56 Humboldt Horse Mtn. Comment
  UC27193  Triphysaria versicolor subsp. versicolor Harley P. Chandler May, 1901 1101 Humboldt Humboldt Bay; North Coast Ranges, Humboldt Bay 30 Comment
  SACT002443  Trisetum canescens Herbert Copeland 1936-6-15 Humboldt At world's biggest tree in redwood forest near Dyerville Comment
  UC34062  Trisetum canescens J. P. Tracy 1901-6-23 1167 Humboldt immediate vicinity Eureka 0 Comment
  SEINET200948 Image available Trisetum cernuum Joseph P. Tracy 1920-5-30 5335 Humboldt Eureka. 61 Comment
  UCD93904  Trisetum cernuum A. H. Murphy 1947-8-5 s.n. Humboldt Bald Hills, 7-8 miles SE of Orick. Comment
  SEINET8719521 Image available Trisetum cernuum Unknown 1952-1 7551 Humboldt Spruce Grove, Trinidad. Comment
  CDA2569  Trisetum flavescens J. P. Tracy 1917-7-1 4830 Humboldt Eureka. 0 Comment
  UC146193  Triteleia hyacinthina Joseph P. Tracy 1908-6 2805 Humboldt opposite Buck Mountain; Northern Coast Ranges, valley of Van Duzen River 304 Comment
  RSA183018  Triteleia hyacinthina Lee W. Lenz 1966-5-24 24659 Humboldt W of Berry Summit, US 299. Comment
  RSA378030  Triteleia hyacinthina Hutchinson 1927-05 s.n. Humboldt [No locality information provided] Comment
  HSC3061  Triteleia laxa D. E. Anderson 1962-7-14 2251 Humboldt 2 mi. W of Kneeland Post Office Comment
  JEPS2503 Image available Triteleia laxa W. L. Jepson 1921-8-11 9412 a Humboldt Big Lagoon Humboldt coast; Big Lagoon, Humboldt coast Comment
  UCR32084  Triteleia laxa David J. Keil 1983-7-2 17340 Humboldt 2.8 mi south of SR 299 along Titlow Hill Rd., SW of Willow Creek 1098 Comment
  HSC26871  Triteleia laxa Clifton Raymond Chesbrough 1973-6-19 95 Humboldt 0.5 mi. N of College Cove along coast Comment
  CHSC79895  Triticum aestivum Gordon Leppig; Sylvia Leppig, Kai Neander 2000-4-14 1293 Humboldt Arcata, UTM zone 10, 4525N, 409E. 3 Comment
  HSC100450  Troximon heterophyllum Carl C. Marshall May 1887 494 Humboldt Kneeland Prairie. Comment
  CAS-BOT-BC85893  Tsuga heterophylla Joseph P. Tracy 1940-8-25 16704 Humboldt Bald Mountain 914 Comment
  UCD135133  Tsuga heterophylla Linda M. Barker 1976-6-14 1589 Humboldt Lanphere-Christensen Dunes, coastal forest and dunes 3 miles west of Arcata. Comment
  CAS-BOT-BC73933  Turritis glabra Doris K. Kildale 1927-7-17 3761 Humboldt Big Creek. 792 Comment
  HSC59117  Umbellularia californica Terry Roth 1979-5-24 85 Humboldt 0.25 mi. down N Bank Rd. from its junction with Hwy. 10 exit at residence 30 Comment
  HSC97590  Umbellularia californica Steven Lee 2004-4-26 32 Humboldt Horse Mtn., 4 mi. up Titlow Hill Rd. from Hwy. 299 Comment
  RSA46914  Umbellularia californica Doris K. Kildale 1925-12-27 1447 Humboldt Kneeland. 762 Comment
  UC183587  Umbellularia californica Joseph P. Tracy 1913-3-9 4020 Humboldt near Hydesville; Northern Coast Region 60 Comment
  SEINET200749  Urtica dioica subsp. gracilis Joseph P. Tracy 1926-5-25 7516 Humboldt Around Humboldt Bay. Elk River Valley. 30 Comment
  UC302988  Urtica dioica subsp. gracilis Joseph P. Tracy 1926-5-25 7516 Humboldt around Humboldt Bay (Northern Coast Ranges, Elk River Valley); Northern Coast Ranges, Elk River Valley 30 Comment
  UC1197782  Vaccinium membranaceum Joseph P. Tracy 1932-7-20 10741 Humboldt Forks of Tish-Tang-A-Tang Creek Trinity Summit 1371 Comment
  HSC7908  Vaccinium ovatum J. Pursell 1964-10-17 10178 Humboldt Road to Box Camp in Hoopa Valley 762 Comment
  HSC7914  Vaccinium ovatum J. Pursell 1964-10-11 10111 Humboldt Patricks Point State Park, trail to wedding rock Comment
  RSA46873  Vaccinium ovatum Doris K. Kildale 1927-3-25 s.n. Humboldt Humboldt Hill Comment
  SEINET3107074  Vaccinium ovatum Steve Selva, Roger Jensen 1974-8-28 96 Humboldt Redwood forest behind Humboldt State University, Arcata. Comment
  CAS-BOT-BC199406  Vaccinium parvifolium Clarence R. Quick 1959-7-24 59 -35 Humboldt Bee Mt., ca. 12 miles southwest of Orleans Comment
  JEPS66688  Vaccinium parvifolium Joseph P. Tracy 1927-6-12 8133 Humboldt Horse Mountain 1432 Comment
  HSC32256  Vaccinium uliginosum J. O. Sawyer 1970-6-24 2286 Humboldt Near Waterdog Lakes 1860 Comment
  RSA30602  Valeriana sitchensis subsp. scouleri Lincoln Constance, R. C. Rollins 1942-5-11 2867 Humboldt 3 miles W of East Fork of Willow Creek. Comment
  HSC91601  Vancouveria hexandra E. Mackey 1986-6-16 Humboldt Patrick's Point State Park Comment
  HSC37695  Vancouveria hexandra J. D. Ackerman 1974-4-26 181 Humboldt .3 mi. up Jolly Giant Cr. from HSU, Arcata. Comment
  HSC3384  Vancouveria planipetala William J. Ferlatte, B. D. Rogers 1966-6-8 2089 Humboldt 2 mi. W of Forest Glen, Granite Canyon. Comment
  HSC44512  Vancouveria planipetala Brad Klipfel 1973-7-1 122 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC67545  Vancouveria planipetala J. P. Smith, Steve Selva 1970-6-14 3835 Humboldt Along Hwy. 96 at Whitmore Creek. 152 Comment
  UCSB23564  Vancouveria planipetala Keefe, Joseph 1967-7-8 Humboldt Redwood Forest, Avenue of the Giants, 2.4 miles north of Miranda 121 Comment
  UCD99496  Velezia rigida Joseph P. Tracy 1947-7-5 17774 Humboldt Trinity Summit; local on ridge top one mile west of Mud Springs. Comment
  HSC102701  Ventenata dubia J. P. Smith 2013-6-16 13729 Humboldt Along State Route 36, just west of the 33.68 highway sign (milepost). 758 Comment
  UC1173640  Veratrum californicum var. californicum Joseph P. Tracy 1936-6-28 15011 Humboldt near Murphy Meadows; Bald Mountain 975 Comment
  UC1225852  Veratrum insolitum Joseph P. Tracy 1948-8-15 18120 Humboldt on Ridge 2 mi e Grove's Prairie; Trinity Summit 1524 Comment
  UC1222773  Verbascum blattaria Joseph P. Tracy 1950-7-9 18980 Humboldt along Trinity Highway Willow Creek Canyon Comment
  UC447232  Verbascum blattaria Joseph Burtt Davy and Walter C. Blasdale 1899-6-28 5898 Humboldt below Hoopa Valley (Klamath River); North Coast Ranges, Klamath River Comment
  HSC67839  Verbena lasiostachys J. P. Smith 1971-10-9 5027 Humboldt Mad River above the Fish Hatchery. Comment
  HSC99387  Veronica americana K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-6-28 36 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  UC582550  Veronica americana Joseph P. Tracy 1937-7-2 15389 Humboldt ne of Hawkins Bar (Happy Camp Mountain); Trinity Summit Range, Happy Camp Mountain 1280 Comment
  HSC78984  Veronica peregrina subsp. xalapensis L. P. Janeway 1984-5-16 796 Humboldt N Spit of Humboldt Bay, W side of Samoa Rd., 0.25 mi. NW of the boat ramp 3 Comment
  SEINET6988462 Image available Veronica peregrina var. xalapensis Wanda P. Vestal, A. G. Vestal 1937-6-22 s.n. Humboldt Kneeland prairie near serpentine outcrops, about 4 miles southeast of Kneeland. Comment
  HSC21209  Veronica persica Elrid H. Spinas 1948-5-22 35 Humboldt Horse Mtn. Comment
  JEPS4464  Veronica scutellata W. L. Jepson 1902-6-24 1921 Humboldt between Eureka and Arcata (Expedition from Ukiah to the Hupa Indian Reservation) 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
  UC1197465  Vicia americana var. americana Joseph P. Tracy 1911-7-1 3277 Humboldt near Hydesville; Northern Coast Region 60 Comment
  UC709400  Vicia americana var. americana Joseph P. Tracy 1933-7-26 12905 Humboldt near 5350 ft Grouse Mt. summit; Grouse Mt. Comment
  UCR122381  Vicia benghalensis George K. Helmkamp, E. A. Helmkamp 2001-7-8 7003 Humboldt North Coast, north spit of Samoa Peninsula, 0.5 mi north of CA Hwy 255 bridge over Humboldt Bay 6 Comment
  RSA20860  Vicia benghalensis Carl B. Wolf 1937-6-18 8899 Humboldt 1/2 miles E of Alton. 21 Comment
  HSC15269  Vicia gigantea C. O. Baker 1962-5-7 33 Humboldt 2 mi. S of Trinidad along Hwy. 101 15 Comment
  OBI12617  Vicia hirsuta Joseph P. Tracy 2016-5-31 4689 Humboldt Stitz Crk. Along Eel River from S Fork to Scotia Comment
  HSC48377  Vicia sativa subsp. nigra Mark Flippo 1978-4-18 40 Humboldt Mckinleyville, Hill Top Rd. Comment
  HSC39995  Vicia sativa subsp. sativa J. P. Smith, J. O. Sawyer 1975-5-31 8145 Humboldt Samoa Peninsula adjacent to Redwood Workshop Area. Comment
  JEPS66198  Vicia tetrasperma Milo S. Baker 1923-7-23 92 Humboldt near Carlotta (Manning Creek); Manning Creek Comment
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Feb 15 2013
  RSA168917  Vicia tetrasperma Joseph P. Tracy 1948-8-7 18083 Humboldt Fickle Hill, 6 miles Southeast of Arcata. 610 Comment
  UCSB61648  Vicia tetrasperma Ertter, Barbara; Delendick, Thomas 1987-5-16 Humboldt Hwy 299 roadside ca. 8 mi E of Arcata, 9 1/2 mi W of Lord Ellis summit Comment
  HSC15282  Vicia villosa subsp. villosa D. E. Anderson 1962-5-10 2210 Humboldt Lanphere's Comment
  UC524122  Vicia villosa subsp. villosa Ira L. Wiggins 1932-7-7 5880 Humboldt near Samoa Comment
  HSC3226  Vinca major W. R. Brigham 1962-5-3 3 Humboldt Near N end of old Hwy. 101 N of Big Lagoon Rd. Comment
  CAS-BOT-BC263947  Viola adunca L. B. Kildale 1930-5-11 9543 Humboldt Bald Hills near [Tomlinson's?] 792 Comment
  RSA12423  Viola adunca Carl B. Wolf 1934-7-2 5871 Humboldt At edge of small lake at Snow Camp. (Mts. east of Korbel). 1372 Comment
  CAS-BOT-BC263948  Viola adunca L. B. Kildale 1927-7-23 3788 Humboldt Hoaglin Lake near [Lass---s] Peaks 1524 Comment
  UC707010 Image available Viola californica Milo S. Baker 1946-6-14 11492 Humboldt Miller Spring South Fork Mt.; S Fork of Miller Spring, Humboldt Co. 1524 Comment
  HSC98113  Viola cuneata Cara Witte 2007-6-26 360 Humboldt Horse Mountain Botanical Area. At intersection of 6N38 and National Forest 1. 1416 Comment
  HSC100696  Viola glabella Carl C. Marshall Jun 1886 278 Humboldt Trinity Summit. Comment
  HSC102037  Viola glabella M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-13 940 Humboldt Forest edge surrounding Patterson Meadows 1566 Comment
  HSC99356  Viola glabella K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-6-24 5 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  HSC38708  Viola hallii J. P. Smith 1976-5-29 8817 Humboldt Horse Mtn. 1402 Comment
  HSC39000  Viola hallii Thomas W. Nelson, Jane P. Nelson 1976-5-31 2654 Humboldt N of junction of FS Rds. 1S07 and 5E27 along 5E27 1524 Comment
  UC275485  Viola hallii Joseph P. Tracy 1925-5-30 7034 Humboldt Laribee Valley; Northern Coast Ranges 701 Comment
  RSA21092  Viola hallii Carl B. Wolf 1937-6-14 8820 Humboldt Kneeland Prairie; North Coast Range. 823 Comment
  HSC34874  Viola ocellata Thomas W. Nelson, James Nelson 1975-5-5 1779 Humboldt Beside Hwy. 101, ~ 4 mi. S of the Salmon Creek Bridge Comment
  BLMAR619  Viola praemorsa Jennifer Wheeler 2011-5-24 619 Humboldt Lacks Creek, Stormy saddle 975 Comment
  RSA21088  Viola praemorsa subsp. linguifolia Carl B. Wolf 1937-6-14 8816 Humboldt Kneeland Prairie; North Coast Range. 823 Comment
  JEPS50377  Viola praemorsa subsp. praemorsa Joseph P. Tracy 1922-5-29 6067 Humboldt Northern Coast Ranges, Head of South Yager Creek South Yager Creek; Northern Coast Ranges, South Yager Creek 762 Comment
  HSC39623  Viola purpurea subsp. purpurea Thomas W. Nelson, Jane P. Nelson 1976-6-15 2727 Humboldt Along old trail from lookout to Blocksburg 1585 Comment
  HSC23603  Viola sempervirens J. O. Sawyer 1971-6-14 2375 Humboldt Above E fork of Horse Linto Creek 1494 Comment
  HSC42197  Viola sempervirens Ed Cope 1977-4-23 23 Humboldt 2.5 mi. S of Shelter Cove Rd. South Fork of Bear Creek at Wailaki Campground 561 Comment
  UC709441  Viola sempervirens Joseph P. Tracy 1941-4-8 16854 Humboldt head of Willow Creek ( Willow Creek Canyon, along Trinity Highway); Willow Creek Canyon, Willow Creek 762 Comment
  UC201299  Viola sempervirens Chesnut and Drew 1888-7-8 Humboldt Campbell's Comment
  HSC23625  Viola sheltonii J. O. Sawyer 1971-6-14 2377 Humboldt Above E fork of Horse Linto Creek 1494 Comment
  HSC98569  Viola sheltonii Cara Witte 2008-6-9 691 Humboldt Board Camp Butte. Forest Serivce Road 4E27. 1503 Comment
  UC1761734  Viola sheltonii W. K. Parks Jul 1933 6237 Humboldt South Fork Mt. Comment
  UC1762495  Viola sheltonii Milo S. Baker 1946-6-14 11491 Humboldt South Fork Mtn. 1524 Comment
  SEINET200826 Image available Vitis californica Joseph P. Tracy 1912-1 3799 Humboldt Along South Fork of Eel River, 5 mi above its mouth. 30 Comment
  HSC38397  Vulpia bromoides J. D. Ackerman 1975-6-10 450 Humboldt 1 mi. N of Samoa Blvd. and Samoa Bridge Rd., S of Manila near RR tracks, along Humboldt Bay Comment
  HSC32482  Vulpia microstachys Bonnie Prange 1974-5-18 Humboldt Off Hwy. 299 at China Slide. Comment
  RSA152486  Vulpia microstachys var. pauciflora Joseph P. Tracy 1936-7-5 15039 Humboldt Grouse Mountain. 1524 Comment
  UC212887  Vulpia microstachys var. pauciflora Joseph P. Tracy 1919-5-31 5161 1/2 Humboldt near Willow Creek (hillslopes at w side of Trinity River); Northern Coast Ranges, Trinity River 152 Comment
  BLMAR79  Whipplea modesta Jennifter Anthony-Wheeler 1994-6-2 79 Humboldt IAQUA, growing on logging rd in shaded coniferous forest 853 Comment
  CHSC68557  Whipplea modesta Vernon H. Oswald 1997-4-29 8356 Humboldt Humboldt Bay NWR, Hookton Slough Trail on the levee along the south side of Hookton Slough. On the edge of the trail. 0 Comment
  HSC33414  Whipplea modesta Thomas W. Nelson 1974-5-30 1348 Humboldt Along Hoopa-Redwood Valley Rd. Comment
  HSC42304  Whipplea modesta Tom Duebendorfer 1977-5-15 50 Humboldt 8.9 mi. E on Ward Rd. from junction of Maple Creek Rd. and Old Hwy. 299 610 Comment
  HSC20442  Whipplea modesta Yarick 1960-8-5 Humboldt M&M, 7 mi., Krueger Creek Comment
  CAS-BOT-BC382929  Wyethia angustifolia Doris K. Kildale 1927-7-1 3614 Humboldt Alton Hill 30 Comment
  HSC38521  Wyethia angustifolia D. E. Anderson, J. P. Smith 1971-6-18 - 1077 Humboldt Chezem Rd., about 3 mi. E of bridge over Redwood Creek Comment
  UC1223300  Wyethia angustifolia Joseph P. Tracy 1950-9-10 19357 Humboldt Bear River Ridge 609 Comment
  UC176305  Wyethia angustifolia Joseph P. Tracy 1913-6-20 4226 Humboldt lower foothills nw slope Buck Mountain; Northern Coast Ranges, nw slope lower foothills Buck Mt 762 Comment
  UC582641  Wyethia angustifolia Joseph P. Tracy 1937-7-24 15524 Humboldt prairie in Devil's Hole; Trinity Summit 1676 Comment
  UC582643  Wyethia angustifolia Joseph P. Tracy 1930-7-27 8898 Humboldt open grassy hills Northern Coast Ranges, Bear River Ridge 609 Comment
  CAS-BOT-BC326985  Wyethia longicaulis W. L. Colwell 1957-8-6 52 Humboldt Eleven miles northeast of Bridgeville near Six Rivers National Forest 1295 Comment
  UC30055  Xerophyllum tenax Joseph Burtt Davy 1899-6-19 5630 Humboldt Hupa Mountain Comment
  CAS-BOT-BC532733  Zigadenus micranthus Doris Kildale Gillespie 1931-6-7 10646 Humboldt South Fork Mt. Blake Lookout 1726 Comment
  UC1005682  Zigadenus micranthus var. micranthus Frank W. Gould 1939-5-30 840 Humboldt about one-half mi below the ski-hut (about 25 mi due e Eureka, Horse Mountain); Horse Mountain 1100 Comment
  HSC49625  Zostera marina R. York 1979-4-22 248 Humboldt Along bluffs just N of College Cove Comment



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