Search Results — 2000 specimen records retrieved (1370 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/consortium/).
 Records are made available under the CCH Data Use Terms.

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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  HSC73162  Abies concolor Gail Newton 1980-6-28 711 Humboldt Near Mad River Butte. 1536 Comment
  CAS-BOT-BC78058  Abies grandis Doris K. Kildale 1926-11-27 2841 Humboldt Alton Hill gulch between Alton + Rohnerville 152 Comment
  HSC89414  Abies grandis P. A. Daly 1986-3-12 92 Humboldt Trinidad Head, along trail 61 Comment
  SD136394  Abies grandis Doris Kildale Niles 1941-7-25 Humboldt Arcata Comment
  HSC73215  Abies procera Gail Newton 1980-6-24 603 Humboldt Near Ladder Rock 1570 Comment
  SD120883  Abronia latifolia Roman Gankin 1965-8-6 558 Humboldt Samoa Peninsula, 1.3 miles south of Samoa, west of road Comment
  UC1602146  Abronia latifolia Joseph P. Tracy 1936-6-6 14861 Humboldt Sandy shore near railroad station Eureka 3 Comment
  CAS-BOT-BC436984  Acaena novae-zelandiae D. W. Cooper 1966-10-10 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
  UCD112493  Acaena novae-zelandiae D. W. Cooper 1966-10-10 s.n. Humboldt SE of Forest Service Nursey, ca. 2 miles SE of Crannell and ca. 4 miles E of US Highway 101. Comment
  HSC62999  Acer circinatum David Wheeler 1979-5-13 108 Humboldt Redwood Valley, 1.0 mi. S of dump on other side of Redwood Creek from rd. Comment
  SD42321  Acer glabrum Carl B. Wolf 1937-9-13 93360 Humboldt Clear Lake between Horse Mtn. and Grouse Mtn. 1525 Comment
  SEINET200861 Image available Acer glabrum Joseph P. Tracy 1933-7-11 12707 Humboldt North Coast Ranges, Grouse Mountain 1520 Comment
  HSC57655  Acer glabrum var. torreyi G. L. Clifton, Griswold 1979-7-25 10828 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1814 Comment
  RSA20961  Acer glabrum var. torreyi Carl B. Wolf 1937-9-13 9336 Humboldt North Coast Range, Clear Lake, between Grouse Mountain and Horse Mountain 1524 Comment
  CAS-BOT-BC331587  Acer macrophyllum Doris K. Kildale 1926-8-15 2527 Humboldt Willow Creek near mouth - between first and second fords 152 Comment
  HSC13074  Acer macrophyllum D. Santana, C. Kline Oct 1970 23 Humboldt HSC Campus Comment
  HSC2810  Acer macrophyllum Francis Winter 1960-4-23 Humboldt 1.0 mi. N of Dollar Ranch on Korbel-Maple Creek Rd. 229 Comment
  HSC98573  Acer macrophyllum C. Witte 2007-5-17 31 Humboldt National Forest Road 5N10. 1/2 mile east of intersection with National Forest 1. 1441 Comment
  UC205627  Acer macrophyllum Joseph P. Tracy 1920-10-24 5404 Humboldt near Korbel (North Fork of Mad River); Northern Coast Ranges, North Fork of Mad River 60 Comment
  SEINET8734158 Image available Achillea borealis subsp. californica H. E. Parks, S. T. Parks 1943-1 24246 Humboldt Egg Point, Trinidad 122 Comment
  CAS-BOT-BC28579  Achillea millefolium Ashley Colt Browne 1936-6-11 s.n. Humboldt Patrick's Point State Park Comment
  CAS-BOT-BC28586  Achillea millefolium David D. Keck 1944-7-11 5494 Humboldt Cape Mendocino 3 Comment
  JEPS37082  Achillea millefolium Joseph P. Tracy 1930-9-28 9199 Humboldt Big Lagoon 3 Comment
  UC581789  Achillea millefolium Joseph P. Tracy 1942-7-12 10442 Humboldt open places at Corral Prairie; Trinity Summit 1584 Comment
  CAS-BOT-BC28577  Achillea millefolium J. Clausen 1949-6-22 2158 Humboldt 4 miles S of Scotia on redwood Highway in border of redwood forest near Eel River Comment
  CAS-BOT-BC28582  Achillea millefolium J. Clausen 1939-6-23 1728 Humboldt On the Bull Creek Road near intersection with Redwood Highway at Dyerville Comment
  CAS-BOT-BC400018  Achlys triphylla Eliz. Parsons Hawver 1915-6-1 s.n. Humboldt Carlotta Comment
  CAS-BOT-BC400020  Achlys triphylla Doris K. Kildale 1928-5-19 5158 Humboldt Chalk Mountain Comment
  HSC42004  Achlys triphylla Tom Duebendorfer 1977-5-15 51 Humboldt 8.9 mi. E on Ward Rd. from junction of Maple Creek Rd. and Old Hwy. 299 610 Comment
  HSC58217  Achlys triphylla Walter Overton 1979-8-1 12355 Humboldt Near Mill Creek, Middle Fork, close to the town of Hoopa. 1341 Comment
  SFV5403  Achlys triphylla J. Turner, F. M. Ball 1962-7-10 s. n. Humboldt East Fork Willow Creek Forest Camp. Highway 299 about 5 miles west of Willow Creek. 457 Comment
  RSA12436  Achlys triphylla C. B. Wolf 1934-7-2 5857 Humboldt 2 miles from Bald Mt. on road to Korbel. 762 Comment
  SEINET12094127  Achlys triphylla F. H. Utech 1988-1 88 -275 Humboldt 14 mi W of Bridgeville on CA 36, Van Duzen County Park along Van Duzen River 50 Comment
  UCD104321  Acmispon parviflorus P. B. Kennedy 1929-6-12 s.n. Humboldt Around Eureka. Comment
  UC1212576  Aconitum columbianum Francia Chisake and Helen Sharsmith 1959-8-22 4752 Humboldt bog at Happy Camp (just over line from Trinity Co.); Inner N. Coast Ranges, Happy Camp 914 Comment
  HSC82405  Aconogonon davisiae Thomas W. Nelson 1979-7-11 5021 Humboldt N Trinity Mtn. and ridge to E, SE of Water Dog Lake 1829 Comment
  HSC56217  Actaea rubra G. L. Clifton, Griswold 1979-8-2 12233 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  UC502922  Actaea rubra Joseph P. Tracy 1932-7-17 10690 Humboldt Devil's Hole Klamath Mts., Trinity Summit (head) 1828 Comment
  RSA46865  Actaea rubra subsp. arguta Doris K. Kildale 1927-7-10 3729 Humboldt Gans Prairie, Bald Mountain Comment
  HSC4589  Adenocaulon bicolor Paul Shields Jun 1955 Humboldt 2 miles S. Weott Comment
  RSA687732  Adiantum aleuticum Maude Minthorn s.n. Humboldt Ferndale Comment
  HSC955  Adiantum aleuticum J. Wendell Howe 1930-9-9 Humboldt 3 mi. SW of Fieldbrook Comment
  UC811115  Adiantum jordanii George Neville Jones 1936-3-22 8662 Humboldt s fork Eel River near Garberville Comment
  HSC34286  Agastache urticifolia K. Irwin 1975-8-16 Humboldt Grogans Hole area. Comment
  CAS-BOT-BC30384  Ageratina occidentalis Henry M. Pollard 1948-7-28 s.n. Humboldt Near Orleans Comment
  HSC5642  Ageratina occidentalis J. P. Tracy 1922-7-15 6101 Humboldt Along Mad River, near Blue Lake Comment
  HSC57685  Agoseris aurantiaca G. L. Clifton, Griswold 1979-7-25 10901 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1784 Comment
  OBI17128  Agoseris grandiflora var. grandiflora Joseph P. Tracy 1942-7-19 17275 Humboldt Vicinity of Garberville Comment
  OBI6921  Agoseris grandiflora var. leptophylla Joseph P. Tracy 1949-6-25 18344 Humboldt 1 mi W of Mud Springs (to Box camp on W slope of Trinity summit) Comment
  HSC99060  Agoseris heterophylla Cara Witte 2007-5-23 89 Humboldt Approximately 2 miles from intersection with 4N70 (Grouse Mountain Lookout Road) on 4N32. 1395 Comment
  UC1222762  Agoseris heterophylla var. heterophylla Joseph P. Tracy 1950-7-6 19006 Humboldt 2 mi s, on Albee Rd Burr Valley 1158 Comment
  UC165751  Agoseris heterophylla var. heterophylla Joseph P. Tracy 1908-6 2735 Humboldt opposite, in valley of Van Duzen River Buck Mountain; Northern Coast Ranges, Van Duzen River 762 Comment
  UC582743  Agoseris heterophylla var. heterophylla Joseph P. Tracy 1927-5-14 3030 A Humboldt at Willow Creek; Trinity River Valley 152 Comment
  CAS-BOT-BC13374  Agoseris retrorsa Henry M. Pollard 1948-8-4 s.n. Humboldt Orleans Mt. 1371 Comment
  UC34646  Agoseris retrorsa Chesnut and Drew 1888-7-21 Humboldt S. Fork Mt. Comment
  BLMAR321  Agrostis densiflora Jennifer Anthony-Wheeler 2002-8-9 321 Humboldt Lost Coast Headland, Trail to Guthrie creek on west facing slope 60 Comment
  UC526894  Agrostis densiflora Joseph P. Tracy 1927-6-26 8216 Humboldt on bluffs facing ocean North Coast Ranges, Stone Lagoon 6 Comment
  JEPS75411  Agrostis exarata W. L. Jepson 1932-7-24 16380 Humboldt near Camp Grant; Eel River 91 Comment
  UC1103388  Agrostis exarata J. P. Tracy 1901-6-23 1180 Humboldt immediate vicinity of Eureka 0 Comment
  UC184150  Agrostis exarata Joseph P. Tracy 1912-7-21 3785 Humboldt Alton Northern Coast Region, Alton 30 Comment
  UC36912  Agrostis exarata Harley P. Chandler June, 1901 1512 Humboldt Klamath River 426 Comment
  CAS-BOT-BC139695  Agrostis gigantea J. P. Tracy 1902-7-4 1758 Humboldt Immediate vicinity of Eureka. 152 Comment
  CAS-BOT-BC139696  Agrostis gigantea Henry M. Pollard 1945-8-24 s.n. Humboldt Between Orleans and Camp Creek. Klamath River. Comment
  CAS-BOT-BC139495  Agrostis hallii Joseph P. Tracy 1929-7-4 8610 Humboldt Northern Coast Ranges. French Camp Ridge. 1066 Comment
  CAS-BOT-BC139496  Agrostis hallii Henry M. Pollard 1948-7-19 s.n. Humboldt River Road, Orleans to Red Cap Creek. Comment
  RSA385503  Agrostis hallii Teresa Prendusi 1977-7-3 9234 Humboldt Road to Fish Lake (Forest Service Road 12N01). 3.5 miles from its junction with State Route 6. 488 Comment
  UCD52715  Agrostis hallii R. Tofsrud 1949-7-1 s.n. Humboldt between Scotia and Capetown. Comment
  HSC96541  Agrostis pallens Gordon Leppig 1997-8-3 645 Humboldt Big Lagoon County Park, Big Lagoon Bog 3 Comment
  UC212862  Agrostis pallens Joseph P. Tracy 1919-9-18 5232 Humboldt Trinity Summit Northern Coast Ranges 1889 Comment
  UC186908  Agrostis scabra J. P. Tracy 1901-6-30 1205 Humboldt immediate vicinity Eureka 0 Comment
  CAS-BOT-BC138631  Agrostis stolonifera Malcom A. Nobs; S. Galen Smith 1949-8-3 1168 Humboldt 1 mile south of Fields Landing, Eel River Valley. Comment
  HSC8802  Agrostis stolonifera John Warner Hosking 1966-8-6 Humboldt Aracata, HSU campus, near Wildlife Bldg. Comment
  HSC8810  Agrostis stolonifera C. B. Wolf 1927-8-27 1189 Humboldt Eureka Bay, on the road from Eureka to Arcata. Comment
  RSA10066  Agrostis stolonifera Joseph P. Tracy 1932-8-21 10363 Humboldt Three Cabins, on lower western foothills of Chaparral Mountain; North Coast Range 457 Comment
  RSA44451  Agrostis stolonifera Henry M. Pollard 1948-7-17 s.n. Humboldt Banks of Klamath River, Orleans Comment
  UC1541566  Aira caryophyllea Harold E. Parks May 1933 4304 Humboldt Spruce Cove Trinidad Comment
  UC37074  Aira caryophyllea Harley P. Chandler May, 1901 Humboldt Humboldt Bay North Coast Ranges 30 Comment
  SEINET10835851  Aira caryophyllea A. Arthur Heller 1923-7-8 Heller 13765 Humboldt State redwood camp, 10 miles south of Dyerville. Comment
  UC526676  Aira praecox Joseph P. Tracy 1925-8-30 7252 Humboldt Freshwater Lagoon North Coast Ranges 60 Comment
  UC594243  Allium amplectens S. K. Harris, J. P. Tracy and H. S. Yates 1936-6-17 3402 Humboldt crossing of Little Van Duzen River between Bridgeville and Dinsmore's; Little Van Duzen River 710 Comment
  UC666887  Allium amplectens Joseph P. Tracy 1936-6-17 14975 Humboldt Little Van Duzen River at highway crossin Little Van Duzen River 713 Comment
  HSC98503  Allium bolanderi var. bolanderi Cara Witte 2007-7-8 434 Humboldt Board Camp Mountain. Pack trail 4E26. 1491 Comment
  HSC58123  Allium campanulatum G. L. Clifton, Griswold 1979-8-1 12098 Humboldt Near N Trinity Mtn., close to the town of Hoopa 1799 Comment
  HSC74047  Allium campanulatum R. York 1980-5-23 611 Humboldt Near Buck Mtn. 1524 Comment
  HSC78654  Allium campanulatum D. K. Imper 1982-7-2 1490 Humboldt Near Connely Creek, N Fork 1493 Comment
  CAS-BOT-BC464487  Allium campanulatum Joseph P. Tracy 1932-7-12 10479 Humboldt Trinity Summit, Head of Brett Hole 1828 Comment
  HSC103255  Allium campanulatum John McRae 2014-6-3 Humboldt Six Rivers National Forest, Black Lassic Quad, Mt. Lassic , Lassics Botanical and Geological Area. 1768 Comment
  HSC43977  Allium falcifolium B. Klipfel 1974-6-25 435 Humboldt Horse Mtn., near the towers Comment
  HSC73536  Allium falcifolium Gail Newton 1980-7-14 1497 Humboldt Near Last Chance Ridge. 1219 Comment
  HSC82040  Allium falcifolium Thomas W. Nelson, James Nelson 1980-6-10 5407 Humboldt Along Swayback Ridge 4-wheel drive rd. 2.5 mi. N of the junction with USFS rd. 1S07 1463 Comment
  RSA249434  Allium falcifolium D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5600 Humboldt Mt. Lassic and 2 smaller peaks to immediate E. 1768 Comment
  HSC67187  Allium hoffmanii Thomas W. Nelson, James Nelson 1980-6-10 5423 Humboldt Along NE side of Red Mtn. 1433 Comment
  RSA293086  Allium hoffmanii Thomas W. Nelson, Jane P. Nelson 1980-6-27 5955 Humboldt Signal Peak south of Mount Lassic. 1524 Comment
  SEINET4208044  Allium triquetrum Richard R. Halse 2013-3-28 8768 Humboldt Along U.S. Hwy. 101 ca 1.0 miles west of Orick.; 0 4 Comment
  JEPS56396  Allium unifolium Joseph P. Tracy 1918-7-5 5004 Humboldt Mattole River Northern Coast Ranges, White Thorn Valley, Mattole River 304 Comment
  UC15002  Allium unifolium Joseph Burtt Davy 1899-6-11 5444 Humboldt between Hubbard's Station and Elk Prairie Comment
  CAS-BOT-BC476601  Allium unifolium Doris K. Kildale 1927-5-15 3296 Humboldt Petrolia. Matlole River Valley Comment
  UC527556  Alnus incana subsp. tenuifolia C. B. Wolf 1931-8-28 2365 Humboldt Redwood Hwy 4 1/2 mi n Fortuna (on road to Eureka) 15 Comment
  CAS-BOT-BC170947  Alnus rhombifolia Joseph P. Tracy 1930-11-2 9243 Humboldt Camp Grant, along Eel River 60 Comment
  RSA174010  Alnus rhombifolia R. F. Thorne 1957-9-2 18991 Humboldt Eel River. Burlington State Park, just S of Weott. Comment
  UC54758  Alnus rhombifolia Mrs. Manning Humboldt Hupa Valley Comment
  POM106497  Alnus rubra Marcus E. Jones 1924-4-26 s.n. Humboldt Eureka. Comment
  SBBG89139  Alnus rubra A. Keedy 1988-9-28 15 Humboldt Alder Grove Rd near Hwy 299, N of Arcata Comment
  UC484033  Alnus rubra C. B. Wolf 1930-10-26 1767 Humboldt near Redwood Highway Bridge (s edge of Lagoon); Big Lagoon 9 Comment
  SEINET201016  Alnus viridis subsp. sinuata J. P. Tracy 1947-8-24 17913 Humboldt Trinity Summit near Box Camp 1524 Comment
  SEINET201056  Alopecurus geniculatus J. P. Tracy 1926-6-12 7589 Humboldt Prairie Creek 152 Comment
  UC1100223  Alopecurus geniculatus Malcolm A. Nobs and S. Galen Smith 1949-8-3 1164 Humboldt 1 mi. s. Fields Landing; Eel R. Valley 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
  UC526745  Alopecurus geniculatus Joseph P. Tracy 1926-6-12 7589 Humboldt Prairie Creek Northern Coast Ranges, Prairie Creek 152 Comment
  HSC8902  Alopecurus pratensis J. P. Tracy 1942-6-2 17096 Humboldt Alton. 30 Comment
  CAS-BOT-BC13700  Ambrosia chamissonis W. S. Cooper 1925-7-28 102 Humboldt Cape Mendocino Comment
  CAS-BOT-BC13708  Ambrosia chamissonis Le Roy Abrams 1916-7-18 6118 Humboldt Arcata to Trinidad Comment
  CHSC10149  Ambrosia chamissonis J. W. Johnson 1961-8-17 1022 Humboldt W. M. Lanphere Farm, Samoa Peninsula. Comment
  HSC38343  Ambrosia chamissonis Peter Sorensen 1976-7-14 Humboldt Woodley Island Comment
  HSC5662  Ambrosia chamissonis David Adams Oct 1960 Humboldt N bank of the Mad River near mouth 0 Comment
  UC127637  Ambrosia chamissonis J. P. Tracy 1901-8-7 1275 Humboldt at, on Sea Beach opposite Eureka Samoa Comment
  UC582624  Ambrosia chamissonis Joseph P. Tracy 1934-10-21 13687 Humboldt s end Stone Lagoon 3 Comment
  HSC100625  Amelanchier alnifolia Carl C. Marshall Jun 1886 292 Humboldt Bald Hills. Comment
  CAS-BOT-BC142901  Amelanchier alnifolia var. semiintegrifolia Thomas Nelson 1977-6-15 3438 Humboldt Along old road to ski area, Willow Creek Quad. - North Coast Ranges 1371 Comment
  HSC18529  Amelanchier alnifolia var. semiintegrifolia F. B. Plett 1963-4-9 16 Humboldt 1.5 mi. N of Trinidad along old Hwy. 101 Comment
  HSC76240  Amelanchier alnifolia var. semiintegrifolia Denis Kearns 1981-6-24 23 Humboldt Near Cedar Camp 1219 Comment
  HSC45631  Amelanchier pallida Diane L. Reed 1978-4-22 8 Humboldt Tish Tang Campground, 5 mi. N of Willow Creek on Hwy. 96 Comment
  HSC26473  Amsinckia spectabilis T. O. Osborne 1970-4-8 15 Humboldt Sugarloaf Rock, Cape Mendocino 76 Comment
  UC1198609  Anagallis arvensis Joseph P. Tracy 1948-9-20 18222 Humboldt Hoopa Valley, along Mill Creek Hoopa Valley, Mill Creek 91 Comment
  SEINET8734419 Image available Anaphalis margaritacea H. E. Parks, S. T. Parks 1943-1 24237 Humboldt Stone Lagoon Comment
  HSC55868  Anemone deltoidea G. L. Clifton, Griswold 1979-7-25 10891 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1784 Comment
  HSC100610  Anemone nemorosa Carl C. Marshall Jun 1885 30 Humboldt Redwoods (high up). Comment
  HSC14969  Anemone oregana var. oregana D. E. Anderson 1965-6-1 3756 Humboldt Horse Mtn., near ski lodge 1433 Comment
  JEPS14236  Angelica genuflexa Joseph P. Tracy 1940-9-26 16725 Humboldt Near south city limits Eureka. 6 Comment
  HSC71436  Angelica hendersonii J. M. DiTomaso 1980-7-29 1798 Humboldt Elkshead, 2 mi N of Trinidad Comment
  UCD127229  Angelica hendersonii R. Tofsrud 1948-7-26 s.n. Humboldt along Highway 101 near Big Lagoon. Comment
  POM318530  Angelica lucida Patricia Wilder 1968-8-21 4376 Humboldt Big Lagoon Park, just west of U.S. 101 15 Comment
  SD109161  Angelica lucida Joseph M. DiTomaso 1980-6-7 1572 Humboldt Elkshead, north of Trinidad. Comment
  SD109165  Angelica tomentosa var. hendersonii Joseph M. DiTomaso 1980-7-29 1800 Humboldt Elkshead, ca. 2 miles north of Trinidad Comment
  UC89528  Anisocarpus madioides Harley P. Chandler June, 1901 1313 Humboldt Hupa Indian Reservation North Coast Ranges 152 Comment
  HSC39226  Antennaria suffrutescens D. E. Anderson, J. P. Smith 1971-7-6 1287 Humboldt Horse Mtn. Comment
  HSC56950  Antennaria suffrutescens Overton, Butler 1979-7-23 9450 Humboldt Near Horse Mtn. Mine, close to the town of Willow Creek 1295 Comment
  HSC4670  Anthemis cotula Lincoln Constance 1934-5-27 694 Humboldt S Fork of Eel River, S end of Dyerville Bridge 46 Comment
  UCD56135  Anthoxanthum aristatum W. R. Powell 1960-7-9 s.n. Humboldt 10 miles SE of Orick (direct line), Dolason Hill Prairie of the Bald Hills, along Orick-Weitchpec Road. 731 Comment
  CAS-BOT-BC289124  Anthoxanthum occidentale Doris K. Kildale 1926-3-28 1671 Humboldt Redwood Creek at Berry's 289 Comment
  CAS-BOT-BC137737  Anthoxanthum odoratum Ashley C. Browne 1936-6-11 s.n. Humboldt Patrick's Point State Park. Comment
  CDA18220  Anthoxanthum odoratum G. D. Barbe, T. C. Fuller 1974-6-17 1848 Humboldt North Coast Ranges; At 707 L Street, Eureka 0 Comment
  HSC104450  Anthriscus caucalis Jeff Barrett, Keleigh Deitsch, Tessa Purdy 2014-4-13 3 Humboldt Samoa Peninsula, Fairhaven, along south side of Bay Street 5 Comment
  HSC73424  Aphanes occidentalis Robert Kirkpatrick, Doug Renwick 1981-4-3 147 Humboldt 2 mi. N of Coastguard Station on Samoa Blvd. 5 Comment
  HSC58041  Apocynum androsaemifolium Gilbert Muth 1979-8-1 11887 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1877 Comment
  CAS-BOT-BC392161  Aquilegia formosa E. C. Johnston 1931-8-1 s.n. Humboldt Klamath River to Arcata Comment
  HSC102623  Aquilegia formosa M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-29 1610 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1579 Comment
  SEINET12093083  Aquilegia formosa F. H. Utech 1986-1 86 -391 Humboldt ca 5 mi N on Kings Peak Rd, from junction with Shelter Cove Rd, near Tolkan Recreation Area 480 Comment
  HSC56045  Aquilegia formosa var. truncata G. L. Clifton, Griswold 1979-7-31 11621 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1719 Comment
  HSC81489  Arabis divaricarpa var. interposita Thomas W. Nelson 1979-7-11 5028 Humboldt Along trail from Grogan's Hole to North Trinity Mtn., from Grogan's Hole to summit. Comment
  UC492237  Arabis glabra Joseph P. Tracy 1932-5-1 9860 Humboldt Redway Northern Coast Ranges 152 Comment
  HSC76286  Aralia californica Teresa Prendusi 1981-7-23 364 Humboldt Near Black Mtn. 890 Comment
  RSA470434  Aralia californica Thekla Mohr 1918-07 s.n. Humboldt Eel River. Comment
  HSC98778  Aralia californica Cara Witte 2007-7-25 579 Humboldt Forest Service Road 5N10. Approximately 2 miles south from intersection with Forest Service Road 5N41. 1290 Comment
  CAS-BOT-BC128693  Arbutus menziesii Carl D. Duncan 1920-9-22 313 Humboldt Common in the vicinity of Hoopa Comment
  HSC49044  Arbutus menziesii Patricia Shesgreen 1978-5-6 69 Humboldt Arthur W. Way Memorial Park campground. 100 yds. N of Mattole River. Comment
  RSA0065452  Arbutus menziesii Nancy Ryan Zabriskie, Walter Zabriskie 1969-8-26 233 Humboldt South Fork of the Eel River below Piercy. Comment
  UC1187351  Arctostaphylos R. G. Skolmen 1960-10-25 10 (1) Humboldt two and a half mi nnw Weitchepec; Quad 11 D-2 975 Comment
  UCD50523  Arctostaphylos canescens Roman Gankin 1965-8-5 543 Humboldt Top of Chimisal Mountain west of Wailaki Recreation Area, Bureau of Land Management. Comment
  CAS-BOT-BC23790  Arctostaphylos columbiana Gary D. Wallace 1974-12-22 1345 Humboldt Near coast N of Trinidad at the edge of the W part of Big Lagoon 6 Comment
  CAS-BOT-BC23798  Arctostaphylos columbiana H. E. Parks 1931-3-25 0917 Humboldt Near Patrick's point Comment
  CHSC63763  Arctostaphylos columbiana Walter Knight; Irja Knight 1988-9-5 6363 Humboldt Bald Hill Road about 21.5 miles from U. S. 101 en route to Hoopa. 929 Comment
  JEPS38951  Arctostaphylos columbiana Joseph P. Tracy 1933-6-13 12582 Humboldt summit of barren ridge 1 mi s road from Hoopa westward to Bair's; Hoopa Mountain 1219 Comment
  UC154034  Arctostaphylos columbiana J. P. Tracy 1909-3-7 2944 Humboldt Immediate vicinity of Eureka 0 Comment
  UC397306  Arctostaphylos columbiana Joseph P. Tracy 1923-2-18 6141 Humboldt Big Lagoon Northern Coast Region; Big Lagoon, Humboldt Co. 6 Comment
  UCD50679  Arctostaphylos columbiana Joseph P. Tracy 1937-7-17 15439 Humboldt Eureka. 45 Comment
  UCD50873  Arctostaphylos glandulosa Roman Gankin 1965-8-5 545 Humboldt 6.5 miles west on Kings Mountain Road, Pacific Range Wilderness Area. Comment
  RSA600893  Arctostaphylos glandulosa subsp. glandulosa L. C. Wheeler 1959-8-1 7621 Humboldt Queens Peak Mine. Comment
  CAS-BOT-BC39132  Arctostaphylos hispidula Doris K. Kildale; L. B. Kildale 1930-5-11 9529 Humboldt Bald Hills - Wiregrass Prairie 792 Comment
  RSA633025  Arctostaphylos manzanita Jon E. Keeley 1996-10-13 27805 Humboldt Salyer Rest Area, east of Salyer, east of Willow Creek on Highway 299. 200 Comment
  RSA633027  Arctostaphylos manzanita Jon E. Keeley 1996-10-13 27800 Humboldt Highway 96, at Bald Hills Road, at the Klamath River, north of Weitchpec. 100 Comment
  UC1193146  Arctostaphylos manzanita subsp. manzanita R. H. Neuns 1950-7-13 131 Humboldt 3 mi s Alder Point; Quad 29D2 563 Comment
  HSC31439  Arctostaphylos nevadensis D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-13 5557 Humboldt Westward lower slopes of Black Lassic near Trinity Co. line. 1585 Comment
  UCD52856  Arctostaphylos nevadensis subsp. knightii Roman Gankin; W. R. Hildreth 1967-10-26 1179 Humboldt 21.4 miles east of U.S. 101 on Bald Hills Road (from Orick); French Camp Ridge. Comment
  SEINET11989136  Arctostaphylos nevadensis subsp. knightii W. Knight, Knight, I. 1982-1 4517 Humboldt Tilden Botanic Garden, Berkeley, orig. from French Camp on road between Orick & Wichepec Comment
  JEPS38838  Arctostaphylos patula W. L. Jepson Jul 16 1902-Jul 17 1902 2062 Humboldt trail to Devil's Backbone Trinity Summit 1981 Comment
  CAS-BOT-BC43978  Arctostaphylos uva-ursi Doris K. Kildale 1927-9-9 3306 Humboldt Big Lagoon Comment
  CAS-BOT-BC46793  Arctostaphylos uva-ursi Joseph P. Tracy 1945-3-30 17504 Humboldt Eureka 45 Comment
  CAS-BOT-BC47215  Arctostaphylos uva-ursi Carl B. Wolf 1930-10-28 1779 Humboldt Samoa, Humboldt Bay. 15 Comment
  HSC7730  Arctostaphylos uva-ursi Norman H. Moe 1962-3-17 Humboldt Lanphere's Place Comment
  SD41455  Arctostaphylos uva-ursi Edith A. Purer 1932-7-26 4131 Humboldt Samoa Comment
  CAS-BOT-BC48257  Arctostaphylos viscida subsp. viscida L. B. Kildale 1930-9-21 10217 Humboldt Bluff Creek trail to Fish Lake (Klamath River tributary) Comment
  UCD129122  Arctotheca calendula G. D. Barbe 1988-7-18 4293 Humboldt Larry Pries dairy, 3.4 miles west of Main Street, on Centerville Beach Road, Ferndale. Comment
  UC1116236  Arenaria serpyllifolia subsp. serpyllifolia Joseph P. Tracy 1948-5-15 17975 Humboldt Trinity River Valley, Willow Creek 152 Comment
  HSC49504  Armeria maritima subsp. californica R. York 1979-4-13 222 Humboldt Just N of College Cove, 1 mi. N of Trinidad Comment
  HSC98121  Arnica cernua Cara Witte 2007-5-24 119 Humboldt Along National Forest 1. Approximately 1 mile south of intersection with 6N38 and 6N36. 1476 Comment
  UC1199254  Arnica cernua Joseph P. Tracy 1926-6-20 7625 Humboldt Horse Mountain Northern Coast Ranges, Horse Mountain 1524 Comment
  HSC73701  Arnica discoidea M. A. Baker 1980-7-23 3142 Humboldt Near Orleans Mtn. 1859 Comment
  CAS-BOT-BC82432  Arnica discoidea Doris K. Kildale 1926-6-27 2190 a Humboldt McClellan Mountain, Sweasey Lake road 822 Comment
  HSC44152  Arnica spathulata Thomas W. Nelson, Jane P. Nelson 1977-7-1 3555 Humboldt Along N side of ridge between Bear and Blanket Creeks. 1494 Comment
  HSC8991  Arrhenatherum elatius D. J. McVean 1965-5-18 77 Humboldt Old Arcata Rd., S of intersection with Indianola Rd. Comment
  RSA0047108  Arrhenatherum elatius Rebecca Wenk, P. Hopkinson, M. Hammond, S. Spiegal 2008-6-6 832 Humboldt Humboldt Redwoods State Park. Look Prairie, 0.5 air miles north of Mattole Road, about 3 air miles west of Highway 101. 244 Comment
  UC180348  Arrhenatherum elatius Joseph P. Tracy 1913-6-10 4084 Humboldt near Bridgeville (Northern Coast Ranges, Rogers Ranch); Northern Coast Ranges, Rogers Ranch 243 Comment
  HSC58169  Artemisia douglasiana G. L. Clifton, Griswold 1979-8-2 12240 Humboldt Near Oregon Creek, close to the town of Hoopa 1663 Comment
  UC275465  Artemisia douglasiana Joseph P. Tracy 1925-11-1 7305 Humboldt Shively Northern Coast Ranges Comment
  UC582424  Artemisia dracunculus Joseph P. Tracy 1932-8-27 10751 Humboldt on: Blue Slide Van Duzen River 91 Comment
  HSC40298  Artemisia pycnocephala Linda M. Barker 1976-7-5 1633 Humboldt 3 mi. W of Arcata. Comment
  HSC4747  Artemisia pycnocephala H. E. Parks, S. T. Parks Jun 1952 24495 Humboldt Samoa Comment
  RSA24049  Artemisia pycnocephala C. B. Wolf 1940-11-10 9782 Humboldt Coast south of mendocino- 1.8 mi. N of where road turns inland to Petrolia. 8 Comment
  SEINET198593  Artemisia pycnocephala H. E. Parks, S. T. Parks Jun 1952 24495 Humboldt Samoa Comment
  HSC90475  Artemisia pycnocephala Jean Hanson 1980-8-28 123 Humboldt Indian (Gunther) Island, Humboldt Bay, Eureka. W end of island between dikes. Comment
  RSA20965  Aruncus sylvester Carl B. Wolf 1937-9-13 9339 Humboldt N coast range, E Fork of Willow Creek at Forest Service Camp. 457 Comment
  HSC64216  Asarum caudatum J. O. Sawyer, M. A. Ericksen 1979-6-23 3385 Humboldt Slopes below Mill Creek Lakes 1585 Comment
  UCR179286  Asarum caudatum R. G. Swinney 1968-3-28 232 Humboldt East of Humboldt State College, Arcata 152 Comment
  HSC63149  Asarum caudatum M. A. Baker 1979-6-28 941 Humboldt Comment
  HSC98125  Asarum caudatum Cara Witte 2007-6-28 379 Humboldt FS Road 5N10. Approximately 0.5 mi E of intersection with National Forest 1. 1426 Comment
  SEINET8690239 Image available Asarum caudatum C. C. Harris, S. K. Harris 1936-1 652 Humboldt On Yager Rd from Carlotta 457 Comment
  HSC59465  Asclepias cordifolia M. A. Ericksen 1979-5-15 291 Humboldt Center of Tish-Tang Campground Comment
  UC162718  Asclepias cordifolia Joseph P. Tracy 1911-7-9 3477 Humboldt near Willow Creek (hill slopes at w side of river); Northern Coast Ranges, Trinity River 182 Comment
  UC449996  Asclepias speciosa Mrs. M. H. Manning 1900-6 Humboldt Hupa Valley Comment
  RSA246785  Aster chilensis R. F. Thorne, Percy C. Everett 1965-8-9 35336 Humboldt Along Hwy 101 about 3 miles N of Eureka; 2 Comment
  RSA417645  Aster chilensis M. B. Dunkle 1936-8-18 4811 Humboldt Fortuna Comment
  RSA43677  Aster radulinus H. M. Pollard 1947-8-9 s.n. Humboldt South River Road, south of Orleans Comment
  UC1199092  Astragalus pycnostachyus var. pycnostachyus Joseph P. Tracy 1930-7-21 8891 Humboldt 3 mi s of point Cape Mendocino (southwestern slopes, fronting the ocean); Northern Coast Ranges, s Cape Mendocino 3 Comment
  CAS-BOT-BC193137  Astragalus rattanii var. rattanii Joseph P. Tracy 1932-6-19 10245 Humboldt Buck Mountain, lower foothills of its northwest slope 762 Comment
  RSA475203  Astragalus rattanii var. rattanii Aaron Liston, Sara Meury 1988-5-30 747 -1 Humboldt Van Duzen River; road across river E of Cheatman Grove [Cheatham Grove]. 100 Comment
Read comments
Jan 28 2016
  UC179942  Astragalus umbraticus Joseph P. Tracy 1914-9-6 4598 Humboldt between High Prairie and Snow Camp (Bald Mountain); Northern Coast Ranges, Bald Mt., betw High Prairie-Snow Camp 1219 Comment
  HSC48318  Asyneuma prenanthoides Brad Klipfel 1973-8-3 309 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC56967  Asyneuma prenanthoides Overton, Butler 1979-7-23 9491 Humboldt Near Titlow Hill, close to the town of Willow Creek. 1280 Comment
  HSC95880  Athyrium filix-femina var. cyclosorum Will Ferrand 2002-2-2 22 Humboldt 9 mi. E of intersection of West End Rd. and Warren Creek Rd. 67 Comment
  HSC92400  Athyrium filix-femina var. cyclosorum L. P. Janeway 1984-5-13 781 Humboldt Along Redwood House Rd. 1.5 mi. from Hwy. 36 229 Comment
  RSA129099  Avena barbata H. L. Person 1932-5-11 s.n. Humboldt Near Arcata Comment
  RSA10053  Avena fatua Joseph P. Tracy 1933-5-20 12229 Humboldt Cape Mendocino. Southwestern slopes, fronting the ocean, three miles south of point of the cape. Comment
  UC526703  Avena fatua Joseph P. Tracy 1926-5-9 7457 Humboldt hills near Bridgeville; North Coast Ranges 609 Comment
  POM312956  Azolla filiculoides Malcolm A. Nobs, S. Galen Smith 1949-8-9 1246 Humboldt Clam Beach Comment
  JEPS21244  Baccharis glutinosa Lincoln Constance 1934-5-29 712 Humboldt Upper Look Prairie Bull Creek Region, South Fork Eel River 365 Comment
  JEPS32397  Baccharis glutinosa W. L. Jepson 1936-8-11 17867 Humboldt spot on mountainside, Philipsville South Fork Eel River Comment
  UC1199293  Baccharis pilularis Joseph P. Tracy 1920-10-31 5408 Humboldt near Grizzly Bluff (Eel River); Eel River 30 Comment
  UC1199296  Baccharis pilularis Joseph P. Tracy 1933-10-15 13099 Humboldt Miranda South Fork of Eel River 121 Comment
  UC1198286  Barbarea orthoceras Joseph P. Tracy 1906-5-6 2443 Humboldt hillside in Wolverton Gulch, near Hydesville 60 Comment
  HSC82029  Bellardia trixago Thomas W. Nelson, Jane P. Nelson 1980-5-25 5344 Humboldt Along Alderpoint-Blocksburg Rd., just SE of bridge over N Dobbyn Creek 152 Comment
  CDA18249  Bellis perennis G. D. Barbe, T. C. Fuller 1974-6-18 1873 Humboldt North Coast Ranges; Fern Canyon, Prairie Creek Redwood State Park, 7.1 mi W of US Hwy 101 on Fern Canyon Rd., 5 mi S of Klamath River. 0 Comment
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Feb 22 2012
  HSC34805  Bellis perennis Dryden 1975-4-21 125 Humboldt Arcata Comment
  UC1561835  Bellis perennis Barbara Ertter with Thomas J. Delendick 1987-5-16 6917 Humboldt Hwy 299 roadside 8 mi e Arcata (9 1/2 mi w of Lord Ellis Summit) Comment
  UC165030  Bellis perennis J. P. Tracy 1901-6-10 1127 Humboldt about Eureka 0 Comment
  HSC32388  Bellis perennis Linda M. Barker 1974-5-11 180 Humboldt Redwood National Park, Bald Hills Rd., Gans Prairie 549 Comment
  HSC34654  Bellis perennis A. M. Montalvo 1975-4-10 206 Humboldt Vacant lot bordering HSU campus between Union St. and A St. 15 Comment
  HSC89490  Bellis perennis P. A. Daly 1986-2-28 64 Humboldt Trinidad Head, along trail 61 Comment
  CAS-BOT-BC48153  Bensoniella oregona Tom Jimerson s.n. s.n. Humboldt Six Rivers National Forest - Near Snow Camp Lake, Smokehouse Creek. Comment
  CAS-BOT-BC48157  Bensoniella oregona R. Bacigalupi; L. Constance; J. P. Tracy; R. Moran; R. L. Rodriguez; S. J. Carlquist 1951-6-14 3410 Humboldt Bald Mountain ridge - in bog, edge of forest at High Prairie, on long high ridge between Mad River and Redwood Creek 1066 Comment
  RSA167308  Bensoniella oregona Joseph P. Tracy 1951-6-14 19416 Humboldt East side of Snow Camp Meadows Comment
  HSC24379  Berberis aquifolium J. O. Sawyer 1970-6-24 2258 Humboldt S of Mill Creek Gap, FS 10N02 1433 Comment
  HSC57111  Berberis aquifolium var. aquifolium Overton, Butler 1979-7-25 9852 Humboldt Near Ammon Creek, close to the town of Willow Creek. 671 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
  HSC71607  Berberis aquifolium var. repens Gail Newton 1980-6-16 201 Humboldt Near Onion Mtn. 1280 Comment
  HSC3347  Berberis nervosa C. B. Wolf 1927-8-28 1179 Humboldt 13 mi. above Blue Lake on Lord Ellis Rd. Comment
  UC9754  Berberis nervosa Harley P. Chandler June, 1901 1286 Humboldt Hupa Indian Reservation; North Coast Ranges 1097 Comment
  CAS-BOT-BC75803  Berberis pinnata Doris K. Kildale 1929-3-19 7025 Humboldt Top of Liscom Hill, near Essex. 853 Comment
  CAS-BOT-BC75807  Berberis pinnata Doris K. Kildale; L. B. Kildale 1930-5-12 9556 Humboldt McClellan Hill near Bridgeville. 609 Comment
  CAS-BOT-BC75809  Berberis pinnata L. B. Kildale 1930-7-7 10260 Humboldt Chaparral Mountain at Bug Creek. 914 Comment
  JEPS58656  Betula occidentalis Chesnut and Drew 1888-7-28 Humboldt Grouse Creek Comment
  HSC102532  Bistorta bistortoides M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-28 1518 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1106 Comment
  HSC48749  Bistorta bistortoides Brad Klipfel 1973-6-10 75 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC53954  Bistorta bistortoides Griswold, Butler 1979-7-11 7004 Humboldt Near Snow Camp Lake, close to the town of Willow Creek. 1393 Comment
  HSC55138  Bistorta bistortoides G. L. Clifton, Griswold 1979-8-1 12017 Humboldt Near N Trinity Mtn., close to the town of Hoopa. 1798 Comment
  HSC35726  Blechnum spicant Thomas W. Nelson 1975-1-16 1747 Humboldt E of HSU campus Comment
  HSC98997  Blechnum spicant Cara Witte 2008-7-28 959 Humboldt Grouse Mountain. Forest Service Road 5N04. Near spring. 1641 Comment
  UC936236  Boechera divaricarpa Harold E. Parks and Joseph P. Tracy 1949-6-25 11678 Humboldt Box Camp Trinity Summit 1463 Comment
  HSC93472  Bolboschoenus maritimus subsp. paludosus Gordon Leppig 1998-6-25 851 Humboldt Hwy. 101 marker 81.60, brackish ditch on E side of Hwy. 2 Comment
  HSC44612  Boschniakia hookeri R. York 1978-6-5 191 Humboldt Near Waterman Ridge Rd., 12 mi. from terminus with Hwy 299. Bulk collection #122 610 Comment
  HSC16673  Boschniakia strobilacea W. M. Lanphere 1937-5-11 Humboldt Hoopa Comment
  CAS-BOT-BC420269  Boykinia occidentalis Harley P. Chandler 1901-6-1 1501 Humboldt Klamath River 426 Comment
  HSC5216  Brickellia californica W. L. Jepson 1936-8-8 17865 Humboldt South Fork of Eel River, Richardson Grove Comment
  CAS-BOT-BC127682  Brickellia greenei Joseph P. Tracy 1939-8-16 16401 Humboldt Horse Mountain, in open forest of Jeffrey Pine, in serpentine belt 1432 Comment
  CHSC31284  Briza maxima Mark Stopher 1980-5-16 68 Humboldt Along Hwy 101 near jct with Elk River, s of Eureka. Comment
  HSC26817  Briza maxima Glenn I. Wilcox 1973-5-26 Humboldt W shore of Freshwater Lagoon Comment
  SEINET3132624  Briza maxima D. E. Anderson 1965-5-8 3626 Humboldt T6N, R2E, sec 29, about 1 mi E Blue Lake on Hwy 299 Comment
  HSC12346  Briza minor Steve Dorei 1970-10-31 137 Humboldt Scotia Bluffs, N of railroad tracks Comment
  UC184146  Briza minor Joseph P. Tracy 1912-6-9 3664 Humboldt Alton; Northern Coast Region 30 Comment
  UC34059  Briza minor J. P. Tracy 1900-6-5 835 Humboldt Immediate vicinity of Eureka 0 Comment
  HSC98640  Brodiaea elegans subsp. elegans Cara Witte 2008-7-10 844 Humboldt National Forest 1. 5 miles south of intersection with Forest Service Road 5N04. Before a cattle guard. 1350 Comment
  UC1197733  Brodiaea elegans subsp. elegans Joseph P. Tracy 1933-8-30 13014 Humboldt grassy places on Titlow Ridge Grouse Mountain 1432 Comment
  HSC37182  Brodiaea terrestris subsp. terrestris J. D. Ackerman 1974-5-25 263 Humboldt 0.5 mi. S of Lufenholtz County Beach off Scenic Drive between Moonstone Beach and Trinidad Comment
  UCD58203  Bromus carinatus A. H. Murphy 1951-4-18 s.n. Humboldt Tooby and Prior Ranch, Blocksburg. 457 Comment
  HSC103006  Bromus carinatus var. carinatus J. P. Smith 2014-5-23 13485 Humboldt Along the Hammond Trail north of Murray Road in McKinleyville 17 Comment
  UCD59082  Bromus carinatus var. marginatus Joseph P. Tracy 1950-6-15 18786 Humboldt Mail Ridge. North of Harris 7 miles. 1036 Comment
  UC526931  Bromus commutatus Joseph P. Tracy 1933-6-9 12534 Humboldt North Coast Ranges, on Eel River, Shively Shively; North Coast Ranges, Eel River, Shively 30 Comment
  HSC102946  Bromus diandrus J. P. Smith 2009-5-30 12599 Humboldt Arcata. Near intersection of Valley West and Giuntoli Road Comment
  HSC37936  Bromus diandrus Peter Sorensen 1976-6-4 Humboldt N Spit Comment
  JEPS72928  Bromus diandrus Lincoln Constance 1934-5-26 674 Humboldt Bull Creek Region, South Fork Eel River, s end of Dyerville Bridge Dyerville Bridge; Bull Creek Region, South Fork Eel River, Dyerville Bridge 45 Comment
  RSA126899  Bromus diandrus H. S. Yates 1936-6-19 5705 Humboldt Lower N.W. slope of Buck Mt. 793 Comment
  CAS-BOT-BC155426  Bromus hordeaceus Doris K Niles 1950-6-1 6 Humboldt Island in Eel River, Niles Field. Comment
  HSC99558  Bromus laevipes K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-8-10 223 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  UC204534  Bromus madritensis subsp. rubens Joseph P. Tracy 1918-5-12 4929 Humboldt Northern Coast Ranges, at Eureka Eureka; Northern Coast Ranges, Eureka 0 Comment
  UC552678  Bromus sterilis Joseph P. Tracy 1935-6-23 13980 Humboldt Northern Coast Ranges, French Camp Ridge French Camp Ridge; Northern Coast Ranges, French Camp Ridge 1066 Comment
  HSC73757  Bromus tectorum Gail Newton 1980-7-11 1326 Humboldt Near Red Mtn. 1341 Comment
  UCD60234  Bromus vulgaris P. B. Kennedy 1923-8-3 s.n. Humboldt South of Scotia. Comment
  CAS-BOT-BC36861  Cakile edentula var. edentula Ira L. Wiggins 1930-7-7 4671 Humboldt Near Samoa. Comment
  HSC6608  Cakile maritima D. E. Anderson 1961-9-2 1770 Humboldt 3 mi. S of Cape Mendocino. 3 Comment
  CAS-BOT-BC185236  Calamagrostis koelerioides Henry M. Pollard 1946-8-28 s.n. Humboldt Near summit of Orleans Mountain. 1828 Comment
  RSA53860  Calamagrostis koelerioides Henry M. Pollard 1946-8-28 s.n. Humboldt Near Summit of Orleans Mt. 1829 Comment
  CAS-BOT-BC438312  Calandrinia ciliata Doris K. Kildale 1926-5-2 1887 Humboldt Horse Mountain cut-off on Willow Creek road. 792 Comment
  HSC104058  Calandrinia ciliata M. F. Norman 2015-4-11 16 Humboldt Arcata, Ma-le'l Dunes Comment
  UC1103694  Callitriche heterophylla Joseph P. Tracy 1934-6-23 13249 Humboldt near Blue Lake (along Mad River); Mad River 15 Comment
  UC183610  Callitriche trochlearis Joseph P. Tracy 1913-3-9 4025 Humboldt Alton; Northern Coast Region 30 Comment
  CAS-BOT-BC80387  Calocedrus decurrens Doris K. Kildale 1927-5-13 3129 Humboldt Redwood Creek at Berry's 289 Comment
  HSC72926  Calocedrus decurrens R. York 1980-5-23 619 Humboldt Near Buck Mtn. 1524 Comment
  OBI33734  Calocedrus decurrens David J. Keil 1983-7-2 17316 Humboldt Ca. 4 mi SE of SR 299 along Titlow HIll rd below Horse Mtn Summit Rd Comment
  CAS-BOT-BC80383  Calocedrus decurrens H. E. McMinn 1922-7-1 278 Humboldt 1 mile east of Dinsmore Comment
  SEINET12051376  Calochortus coeruleus F. H. Utech, Sato, T.; Ohara, M. 1990-1 90 -315 Humboldt Six Rivers National Forest, 0.5 mi S of CA 199 on French Hill Road (USFS Rd. 411) 150 Comment
  HSC73066  Calochortus tolmiei M. A. Baker 1980-6-16 1946 Humboldt Near Onion Mtn. 1280 Comment
  UCD139588  Calochortus tolmiei Collector Unknown 1935-4-8 s.n. Humboldt Fort Seward. Comment
  CAS-BOT-BC494364  Calochortus tolmiei Joseph P. Tracy 1917-5-30 4813 Humboldt Sand dunes west of Dows Prairie 15 Comment
  UC1537208  Calochortus tolmiei Gordon H. True Jr. 1936-5-11 456 Humboldt 12 mi w Miranda; Elk Ridge 457 Comment
  JEPS17828  Calochortus vestae Joseph P. Tracy 1918-6 4513 Humboldt Eureka Northern Coast Ranges Comment
  CAS-BOT-BC175758  Caltha leptosepala Carl B. Wolf 1934-7-2 5891 Humboldt Snow Camp (mts. E. of Korbel). Near Small Lake 1371 Comment
  HSC82398  Caltha leptosepala Thomas W. Nelson 1979-7-11 5016 Humboldt N Trinity Mtn. and ridge to E. 1829 Comment
  SEINET2474864 Image available Caltha leptosepala var. biflora Joseph P. Tracy 1930-1 8971 Humboldt South Fork Mountain, at McKay Camp 1680 Comment
  CAS-BOT-BC273312  Calycadenia fremontii L. R. Abrams 1918-6-16 7133 Humboldt Willow Creek Comment
  CAS-BOT-BC273313  Calycadenia fremontii Carl D. Duncan 1920-9-22 s.n. Humboldt Hoopa Valley Comment
  CAS-BOT-BC273318  Calycadenia fremontii Joseph P. Tracy 1938-8-14 16117 Humboldt South Fork of Trinity River 304 Comment
  UC205208  Calycadenia fremontii Joseph P. Tracy 1920-8-15 5350 Humboldt mouth of Salmon River Northern Coast Ranges, Klamath River 243 Comment
  HSC24779  Calycadenia truncata Barbara Kelly 1971-7-7 66 Humboldt Somes Bar Comment
  SEINET11861071  Calycadenia truncata subsp. microcephala J. P. Tracy 1941-9-1 17009 Humboldt along Trinity River near Don Juan Point 335 Comment
  SEINET11861072  Calycadenia truncata subsp. scabrella H. P. Chandler 1901-1 1492 Humboldt Klamath River, North Coast Ranges 427 Comment
  UC14970  Calypso bulbosa Joseph Burtt Davy and Walter C. Blasdale Jun 21 1899-Jun 23 1899 5760 Humboldt North Coast Ranges, Box Camp, Trinity Summit Trail Box Camp; North Coast Ranges, , Trinity Summit Trail Comment
  UCD138885  Calypso bulbosa var. occidentalis J. C. Arthur 1934-3-20 s.n. Humboldt exact location unknown. Comment
  HSC55198  Calyptridium monospermum G. L. Clifton, Terry Griswold 1979-8-2 12299 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  HSC65839  Calyptridium monospermum Gail Newton 1980-6-16 173 Humboldt Near Monks Camp. 1097 Comment
  SEINET12343669  Calystegia occidentalis L. K. Henry 1971-7-6 Humboldt Along Rt 36, 2 mi E of Dinsmore, in Six Rivers National Forest Comment
  UC449948  Calystegia occidentalis subsp. occidentalis Mrs. M. H. Manning 1901-1 Humboldt near Hupa; near Hupa Comment
  HSC79454  Calystegia purpurata subsp. purpurata Kenneth Clark 1980-4-18 604 Humboldt Above Dead Man's Gulch near parking access 137 Comment
  SD42477  Calystegia soldanella Carl B. Wolf 1937-6-18 8902 Humboldt Centerville Beach. 3 Comment
  HSC59560  Calystegia soldanella Rick Lundquist 1979-5-16 89 Humboldt N spit, across from the Samoa boat ramp N of US Coast Guard Station 0 Comment
  HSC69837  Calystegia soldanella R. Kalal 1979-5-28 64 Humboldt W of Samoa Blvd. 3 Comment
  UC1173650  Camassia leichtlinii subsp. suksdorfii Joseph P. Tracy 1930-7-17 9000 Humboldt South Fork Mountain; in wet meadow at McKay Camp 1676 Comment
  UC1197668  Camassia quamash J. P. Tracy 1906-6-24 2509 Humboldt near Field's Landing (on s slope of Humboldt Hill); Humboldt Hill 30 Comment
  HSC16445  Camissonia cheiranthifolia S. J. Hawks 1965-5-14 60 Humboldt 1 mi. W of Mckinleyville, past the end of Murray Rd. Comment
  HSC16540  Camissonia cheiranthifolia Paul Shields 1955-9-17 Humboldt 1/2 mi. S of mouth of Mad River Comment
  HSC16441  Camissonia cheiranthifolia J. W. Johnson 1961-5-13 1358 Humboldt Arcata, Christenson Farm, Samoa Peninsula Comment
  UC1196947  Camissonia contorta Joseph P. Tracy 1939-4-29 16244 Humboldt mouth of Slate Cr. Klamath River 121 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
  SEINET10905897  Campanula prenanthoides Rattan 1878-1 RATTAN s.n. Humboldt Humboldt County Comment
  SEINET10905968  Campanula scouleri Wolf 1934-7-2 WOLF 5854 Humboldt 2 MI FROM BALD MT ON RD TO KORBEL SEMISHADE, COMMON 762 Comment
  UC1199214  Capsella bursa-pastoris Joseph P. Tracy 1935-4-20 13790 Humboldt Trinity River Valley, at Willow Creek Willow Creek; Northern Coast Ranges, Trinity River Valley, Willow Creek 152 Comment
  BLMAR76  Cardamine californica Jennifer Anthony-Wheeler 1994-6-2 76 Humboldt IAQUA, gwng up logging rd in conif forest 853 Comment
  HSC6693  Cardamine californica S. R. Johnson 1965-3-28 20 Humboldt 1.5 mi. N of Luffenholtz Beach Comment
  HSC6699  Cardamine californica D. E. Anderson 1965-6-1 3766 Humboldt Horse Mountain. 1220 Comment
  HSC8597  Cardamine californica D. K. Smith 1968-3-3 12 Humboldt On West End Rd., ca. 3 mi. from Hwy. 299 Comment
  HSC95664  Cardamine californica Kevin Thomas 2004-3-6 1 Humboldt Along beach access trail to College Cove Comment
  SD56729  Cardamine californica Darley F. Howe 1963-5-26 3554 Humboldt 3.7 miles on Ball Mill Road, east of Orick. 490 Comment
  SFV18478  Cardamine californica J. Wanamaker, M. Ellestad, S. Magnuson 1998-2-28 s. n. Humboldt Trinidad. 0.75 miles along Mill Creek trail. 18 Comment
  UC249682  Cardamine californica var. sinuata Joseph P. Tracy 1921-3-20 5426 Humboldt 12 mi e Hydesville (Van Duzen River at Blue Slide); Northern Coast Ranges, Van Duzen River at Blue Slide 91 Comment
  HSC89488  Cardamine oligosperma P. A. Daly 1986-2-28 66 Humboldt Trinidad Head, along trail 61 Comment
  CAS-BOT-BC384766  Cardionema ramosissimum D. E. Breedlove 1962-6-7 3048 Humboldt 1.5 miles south of Samoa on peninsula on western side of Humboldt Bay Comment
  HSC5227  Carduus tenuiflorus W. D. Stevens 1967-7-22 56 Humboldt Above the dirt road from old Hwy. 101 to the top of the N bank of the Mad River Comment
  JEPS79833  Carex athrostachya Joseph P. Tracy 1935-7-23 14140 Humboldt Trinity Summit, Corral Prairie Corral Prairie; Trinity Summit, Corral Prairie 1584 Comment
  HSC70165  Carex bolanderi Thomas W. Nelson 1978-6-10 4417 Humboldt Behind the Seventh-Day Adventist Church on F St. 61 Comment
  SEINET7552610 Image available Carex bolanderi David Castaner 1989-6-19 10248 b Humboldt Fern Canyon. Comment
  JEPS79836  Carex brainerdii Joseph P. Tracy 1935-7-30 14350 Humboldt on ridge 2 mi sw of top of Salmon Summit; Salmon Summit 1767 Comment
  CAS-BOT-BC34379  Carex cusickii Joseph Prince Tracy 1938-7-6 16023 Humboldt Big Lagoon. 6 Comment
  HSC38078  Carex densa Thomas W. Nelson, James Nelson 1976-5-30 2629 Humboldt McKeown Ranch, N of Dinsmore. Comment
  CAS-BOT-BC34970  Carex densa Joseph Prince Tracy 1928-6-17 8453 Humboldt Northern Coast Ranges. Trinity River Valley, at Willow Creek. 152 Comment
  CAS-BOT-BC34978  Carex densa Joseph Prince Tracy 1936-6-17 14953 Humboldt Northenr Coast Ranges. Buck Mountain, lower foothills of its northwestern slope. 762 Comment
  HSC48137  Carex densa D. H. Norris 1971-7-17 19600 Humboldt Along Redwood House Rd., about 3 mi. W of intersection with Kneeland-Bridgeville Rd. Comment
  CAS-BOT-BC19862  Carex echinata subsp. echinata Joseph Prince Tracy 1932-7-14 10567 Humboldt Trinity Summit. Corral Prairie. 1584 Comment
  CAS-BOT-BC21280  Carex fracta Joseph Prince Tracy 1937-7-25 15542 Humboldt Trinity Summit. Head of Hors-Linto Creek. 1371 Comment
  UC1755279  Carex geyeri Dean W. Taylor 2007-7-11 20162 Humboldt Horse Mountain; Six Rivers National Forest, Titlow Hill Road at the junction with Forest Road 6N18 1432 Comment
  POM160289  Carex globosa Joseph P. Tracy 1925-6-7 7064 Humboldt East Fork of Willow Creek, Willow Creek Canyon. 457 Comment
  CAS-BOT-BC146593  Carex gynodynama Joseph P. Tracy 1927-5-8 7969 Humboldt Phillipsville; facing South Fork of Eel River 121 Comment
  CAS-BOT-BC21752  Carex hassei Joseph Prince Tracy 1927-6-17 8170 Humboldt Big Lagoon. 6 Comment
  HSC70469  Carex hendersonii J. P. Tracy 1905-6-25 2202 Humboldt Eureka 0 Comment
  UC50824  Carex hendersonii J. P. Tracy 1900-5-28 811 Humboldt immediate vicinity Eureka 0 Comment
  HSC98937  Carex interior Cara Witte 2008-7-30 971 Humboldt Forest Service Road 5N04. 1/4 mile east of intersection with Forest Service Road 4N70. 1583 Comment
  UC562263  Carex jonesii Joseph P. Tracy 1935-7-26 14257 Humboldt Water Dog Lakes Trinity Summit 1828 Comment
  CHSC93262  Carex lenticularis var. impressa Thomas W. Nelson; Jane P. Nelson 1987-6-11 8583 Humboldt North Coast Ranges. At trail head and along trail to Grogans Hole. Comment
  HSC44035  Carex leptopoda Thomas W. Nelson, Jane P. Nelson 1977-7-1 3580 Humboldt Along road, N from Alder Springs 1463 Comment
  SEINET7467750 Image available Carex leptopoda J. A. Churchill 1984-5-29 8069 Humboldt entrance road to Cal-Barrel Area Comment
  CAS-BOT-BC31660  Carex lyngbyei Joseph Prince Tracy 1927-7-16 8428 Humboldt Near mouth of Elk River, Humboldt Bay. 3 Comment
  HSC36162  Carex microptera Thomas W. Nelson, Jane P. Nelson, James Nelson 1975-6-14 1891 Humboldt Beside branch off FS 2S08 to Pine Mtn. Comment
  HSC45431  Carex microptera Thomas W. Nelson, Jane P. Nelson 1978-7-2 4394 Humboldt SE of E peak of the Mount Lassic group 1616 Comment
  HSC71111  Carex multicaulis M. A. Baker 1980-5-23 1387 Humboldt Near Buck Mtn. 343 Comment
  HSC102151  Carex multicostata M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-3 1058 Humboldt Patterson Meadows 1555 Comment
  RSA167282  Carex multicostata Joseph P. Tracy 1950-7-25 19064 Humboldt South Fork Mountain. Openings in fir forest near McKay camp. 1677 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
  CHSC34065  Carex nudata Joseph P. Tracy 1911-6-4 3221 Humboldt Northern Coast Region. Along Little River, 5 miles from the coast. 121 Comment
  HSC45968  Carex nudata J. P. Smith 1973-5-26 6846 Humboldt Scotia Bluffs along the Eel River near Rio Dell. Comment
  POM118373  Carex obnupta Marcus E. Jones 1924-4-26 s.n. Humboldt Eureka. Comment
  BLMAR237  Carex obnupta Jennifer Anthony-Wheeler 1996-9-26 237 Humboldt King range, growing in wet places in creeksides habitat between Nadelos and Wailaki 548 Comment
  CAS-BOT-BC119378  Carex obnupta Alice Eastwood; John Thomas Howell 1937-6-23 4831 Humboldt Near Yager Comment
  HSC38424  Carex obnupta Lon Hall 1975-6-20 407 Humboldt About 2 mi. N from Shelter Cove Rd. on Horse Mtn. Rd., along Bear Creek, from streamside up to unused dirt logging road above creek 488 Comment
  UC249734  Carex obnupta Joseph P. Tracy 1923-9-2 6541 Humboldt McClellan Mt. Northern Coast Ranges 914 Comment
  RSA364776  Carex ovalis D. H. Norris 1971-7-17 19601 Humboldt Along Redwood House Road about 3 miles west of junction with Kneeland-Bridgeville Road. Comment
  UC2015859  Carex pellita Joy Mastrogiuseppe, Tom Nelson 1986-7-22 4346 Humboldt Coast Range, Burr Valley area. 'False Burr Valley', beside Burr Creek. Comment
  CAS-BOT-BC118824  Carex preslii Joseph Prince Tracy 1938-6-9 15878 Humboldt Dobbyn Creek 152 Comment
  SEINET7572538 Image available Carex preslii Ray Tallent 1987-8-11 895 Humboldt Six Rivers National Forest, road S of Horse Mtn. 1390 Comment
  HSC82401  Carex scopulorum var. bracteosa Thomas W. Nelson 1979-7-11 5013 Humboldt N Trinity Mtn. and ridge to E. 1829 Comment
  HSC103370  Carex serratodens Thomas W. Nelson, Jane Nelson 1977-9-3 3734 Humboldt Along old logging road, just east of Pine Mountain, off Forest Service Road 2S08 1463 Comment
  UC3030704  Carex serratodens Joseph P. Tracy July, 1908 2898 Humboldt near Low Gap (Dinsmore's Ranch, ridge between Van Duzen and Mad Rivers); Northern Coast Ranges 1066 Comment
  HSC44031  Carex subfusca Thomas W. Nelson, Jane P. Nelson 1977-9-3 3728 Humboldt Along creek draining N end of pond above Alder Springs 1137 Comment
  UC202501  Carex tumulicola Joseph P. Tracy and Ernest B. Babcock 1912-5-11 3591 Humboldt Hydesville Northern Coast Ranges 60 Comment
  POM248622  Carex unilateralis Joseph P. Tracy 1937-8-7 15618 Humboldt Bald Mt. 915 Comment
  UC1116270  Carex unilateralis Joseph P. Tracy 1946-5-30 17539 Humboldt near Bridgeville 457 Comment
  UC562649  Carex unilateralis Joseph P. Tracy 1927-7-17 8276 Humboldt Three Cabins; lower western foothills of Chaparral Mountain 457 Comment
  UC562327  Carex utriculata Joseph P. Tracy 1932-7-14 10563 Humboldt Corral Prairie Trinity Summit 1584 Comment
  UC1103613  Carex vesicaria var. major Joseph P. Tracy 1923-9-2 6542 Humboldt Mc Clellan Mt. Northern Coast Ranges 914 Comment
  HSC98629  Castilleja affinis subsp. affinis Cara Witte 2007-6-4 184 Humboldt Cold Spring. 0.5 mile S of Titlow Hill. 1386 Comment
  HSC99012  Castilleja affinis subsp. affinis C. Witte 2007-5-10 19 Humboldt Along National Forest 1 on Kinsey Ridge. Approximately 2 miles southeast of intersection with 5N04. Near cattleguard. 1368 Comment
  HSC20571  Castilleja affinis subsp. litoralis R. E. Hafenfeld 1965-5-9 29 Humboldt 1/2 mi. S of Squashan Cr. Jct. Gold Bluff Beach Rd. Comment
  HSC59736  Castilleja affinis subsp. litoralis Clark L. Miller 1979-5-13 6127 Humboldt N of Trinidad along Patricks Point Dr. Comment
  JEPS21129  Castilleja affinis subsp. litoralis Myrtle Paulson 1918-4-28 Humboldt Eureka Comment
  JEPS3694  Castilleja affinis subsp. litoralis L. R. Heckard and P. C. Silva 1952-5-10 271 Humboldt just s Humboldt Bay; Table Bluff Comment
  HSC20839  Castilleja ambigua subsp. humboldtiensis D. E. Anderson 1962-5-10 2208 Humboldt Lanphere's Comment
  JEPS93175  Castilleja ambigua subsp. humboldtiensis Margriet Wetherwax and Kevin Downing 1993-8-9 2455 Humboldt just n Eureka (s side of Eureka Slough, e side of Humboldt Bay, near Bayside Rd and Myrtle, just past Pigeon Point, e side of road); Humboldt Bay 5 Comment
  SD62425  Castilleja applegatei subsp. pinetorum Lincoln Constance, Elwood Molseed, Robert Ornduff 1961-7-19 3701 Humboldt Open ridge easr of Hinkey Summit. Santa Rosa Range, Humboldt National Forest Comment
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Mar 3 2014
  CAS-BOT-BC255521  Castilleja applegatei var. pinetorum F. W. Pennell; J. P. Tracy 1940-7-7 26097 Humboldt Grouse Mountain, w. of Salyer 1554 Comment
  CHSC69833  Castilleja arachnoidea Thomas Nelson 1979-7-11 5000 Humboldt North Trinity Mountain and ridge to east. 1828 Comment
  HSC48266  Castilleja attenuata D. E. Anderson 1965-5-8 3642 Humboldt About 2 mi. N of Willow Creek on road running along E side of Trinity River Comment
  UCR39807  Castilleja attenuata L. P. Janeway 1984-5-5 754 Humboldt Road shoulder of Hwy 299 c. 1.5 mi west of Willow Creek 250 Comment
  HSC72482  Castilleja attenuata J. P. Smith, J. O. Sawyer 1973-5-12 6682 Humboldt 3.3 mi. from Redwood Creek on Hoopa Rd. Comment
  SEINET12288574  Castilleja douglasii H. P. Chandler 1901-1 1485 Humboldt North Coast Ranges, Klamath River 427 Comment
  HSC32373  Castilleja exserta subsp. latifolia Linda M. Barker 1974-6-2 200 Humboldt Manila Dunes, Samoa Peninsula, W of Emerson Mill 0 Comment
  RSA183597  Castilleja franciscana D. E. Anderson 1962-7-10 2244 Humboldt Luffenholtz Beach, about 2 miles south of Trinidad along old 101 highway. Comment
  HSC56041  Castilleja miniata G. L. Clifton, Griswold 1979-7-31 11608 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1719 Comment
  HSC56307  Castilleja miniata Overton, Butler 1979-8-2 12624 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  CAS-BOT-BC244884  Castilleja miniata Thomas W. Nelson; Jane P. Nelson 1979-7-11 5032 Humboldt Along trail from Grogan's Hole to North Trinity Mountain from Grogan's Hole to summit Comment
  HSC44346  Castilleja pruinosa Brad Klipfel 1975-6-17 689 Humboldt Horse Mtn. Comment
  HSC99043  Castilleja pruinosa Cara Witte 2008-6-4 678 Humboldt Horse Mountain Botanical Area. Forest Service Road 6N38. Near Horse Mountain mine. 1307 Comment
  HSC41587  Castilleja pruinosa Thomas W. Nelson, Jane P. Nelson 1977-7-30 3656 Humboldt Along S side of ridge between the forks of Black Lassic Creek 1646 Comment
  HSC72569  Castilleja pruinosa J. P. Smith, J. O. Sawyer 1976-5-2 8628 Humboldt S. R. 96, 4.9 mi. N of its junction with S.R. 299 122 Comment
  UC199378  Castilleja rubicundula subsp. lithospermoides P. E. Goddard 1907-5-29 . 104 Humboldt Van Duzen Comment
  HSC103011  Catalpa bignonioides J. P. Smith 2014-6-6 13868 Humboldt Willow Creek. Ornamental tree 180 Comment
  UC1502133  Ceanothus R. Sutherland 1975-7-13 2 .13.75 Humboldt Pt. Delgada Quad. 518 Comment
  CAS-BOT-BC48531  Ceanothus cordulatus Doris K. Kildale 1926-9-5 2613 Humboldt Lasseck's Peaks 1661 Comment
  SDSU19193  Ceanothus cordulatus Michael G. Simpson, Michael Mesler and Michael Mayer 2008-5-27 3012 Humboldt Six Rivers National Forest. From Hwy 299, take Titlow Hill Road (at Berry Summit) ca. 7.5 miles south, west 0.2 miles to Cold Spring. Ca. 0.3 mile south-southeast of Cold Spring. Ca. 3.3 aerial miles south-southeast of Horse Mtn. Radio Tower. 1426 Comment
  UC18280  Ceanothus cuneatus var. cuneatus C. C. Marshall April 1888 Humboldt Hoopa Valley Comment
  HSC92755  Ceanothus foliosus var. foliosus J. R. McFarland 1997-4-10 Humboldt 3.7 mi N on King Range Rd. from Shelter Cove Rd. near peak 602 Comment
  CAS-BOT-BC63676  Ceanothus integerrimus L. B. Kildale 1927-7-17 3751 Humboldt Bug Creek. 792 Comment
  SEINET3836772 Image available Ceanothus integerrimus Bassett Maguire, Ruth Maguire, C. B. Maguire 1934-6-7 15325 Humboldt Ten miles South of Squaw Creek Comment
  CAS-BOT-BC51217  Ceanothus parryi M. S. Jussel 1931-5-2 s.n. Humboldt 20 miles N. of Garberville Comment
  CAS-BOT-BC51223  Ceanothus parryi C. Hart Merriam 1920-8-27 s.n. Humboldt South fork Eel River (10 miles so. of Garberville) Comment
  HSC37086  Ceanothus parryi R. Sutherland 1975-5-20 4 .20575 Humboldt 122 Comment
  HSC43179  Ceanothus parryi R. Sutherland 1975-6-19 2 .19675 Humboldt 2 mi NE of Briceland 178 Comment
  HSC43182  Ceanothus parryi R. Sutherland 1975-7-5 9 .5775 Humboldt 244 Comment
  JEPS42121  Ceanothus parryi E. Fritz Apr. 1934 Humboldt Philipsville Comment
  UC1193306  Ceanothus parryi K. Cuff 1950-8-24 123 Humboldt 2 mi n Phillipsville; Quad. 29C1, n of Phillipsville 213 Comment
  UC170020  Ceanothus parryi Joseph Burtt Davy and Walter C. Blasdale 1899-6-11 5416 Humboldt Between Hubbard's Station and Elk Prairie Comment
  UC1998009  Ceanothus parryi Joseph P. Tracy 1935-5-19 13810 Humboldt Phillipsville: grassy slopes and open oak groves facing south Fork of Eel River. 121 Comment
  CAS-BOT-BC51213  Ceanothus parryi Doris K. Kildale 1926-12-19 2871 a Humboldt South Fork - on South Fork of Eel River 51 Comment
  HSC18322  Ceanothus pumilus Class 1937-5-12 Humboldt Hoopa Comment
  SEINET201060  Ceanothus pumilus J. P. Tracy 1946-5-4 17526 Humboldt Willow Creek Canyon along Trinity Highway 610 Comment
  UC170018  Ceanothus pumilus Joseph Burtt Davy and Walter C. Blasdale 1899-6-19 5647 Humboldt Hoopa Mountain North Coast Ranges, Hoopa Mountain Comment
  OBI44966  Ceanothus thyrsiflorus var. thyrsiflorus Midred J. Cady 1938-7-14 s.n. Humboldt Near Trinidad Comment
  JEPS42234  Ceanothus velutinus W. L. Jepson 1932-7-24 16382 Humboldt Fruitland Mail Ridge Comment
  UC668158  Ceanothus velutinus Joseph P. Tracy 1935-5-12 13798 Humboldt Trinity River Valley at Willow Creek; Trinity River Valley, Willow Creek 152 Comment
  CDA35679  Ceanothus velutinus Gordon Leppig 1998-6-1 876 Humboldt Horse Mountain. Buck Flat, Titlow Hill Road at Ammon Ridge Road. Comment
  HSC55662  Ceanothus velutinus var. velutinus Overton, Butler 1979-7-24 9803 Humboldt Near Black Rock, close to the town of Willow Creek 1463 Comment
  UC582507  Centaurea X moncktonii Joseph P. Tracy 1933-8-22 12973 Humboldt at Eureka Eureka 60 Comment
  CAS-BOT-BC277180  Centaurea X pouzinii T. C. Fuller 1961-9-26 7030 Humboldt Horse Prairie, 2 mi. s. of Redcrest Comment
  CAS-BOT-BC272107  Centaurea cyanus Doris K. Kildale 1925-6-27 758 Humboldt Yager Creek, near mouth Comment
  UC566944  Centaurium muehlenbergii H. L. Mason 1928-7-14 4903 Humboldt near Garberville; East Fork of Eel River Comment
  RSA54130  Centaurium muehlenbergii H. M. Pollard 1945-8-28 s.n. Humboldt Near Harley place, New Orleans. Comment
  UC275461  Centromadia fitchii Joseph P. Tracy 1925-8-23 7247 Humboldt Harris Northern Coast Ranges 914 Comment
  HSC98060  Cephalanthera austiniae Cara Witte 2007-7-11 495 Humboldt Waterhole off Forest Service Road 5N10. Approximately 2 miles east of intersection with National Forest 1. 1346 Comment
  CAS-BOT-BC384896  Cerastium arvense L. R. Abrams 1916-7-18 6134 Humboldt Arcata to Trinidad Comment
  HSC90487  Cerastium glomeratum Jean Hanson 1980-4-12 35 Humboldt Eureka, Indian Island in Humboldt Bay. W end of island. Comment
  HSC60028  Cercis occidentalis M. A. Baker 1977-6-6 369 Humboldt Hoopa Comment
  UC666857  Cercocarpus ledifolius var. ledifolius Joseph P. Tracy 1935-7-30 14362 Humboldt Salmon Summit, about 2 mi sw of the top of the mountain Salmon Summit 1767 Comment
  UC1598409  Cheilanthes gracillima J. Burtt Davy 1899-7-9 5387 Humboldt Harris to Hubbard's Station Comment
  HSC40250  Chenopodium album Linda M. Barker 1976-6-22 1629 Humboldt 3 mi. W of Arcata Comment
  HSC91610  Chenopodium album E. Mackey 1987-8-10 Humboldt Patrick's Point State Park, by trail down to Agate Beach Comment
  UC195427  Chenopodium pumilio Joseph P. Tracy 1915-9-12 4675 Humboldt on river nearly opposite Laribee Creek; Northern Coast Ranges, Eel River, Holmes Flat 60 Comment
  HSC100471  Chimaphila menziesii Carl C. Marshall Jun 1885 89 Humboldt Higher hills. Comment
  HSC45429  Chimaphila menziesii Thomas W. Nelson, Jane Nelson 1977-6-19 3488 Humboldt Along road to Goat Hill 1616 Comment
  UC1225900  Chimaphila umbellata Joseph P. Tracy 1947-7-9 17856 Humboldt Horse Mt. 1432 Comment
  RSA46774  Chrysolepis chrysophylla Doris Kildale Gillespie 1937-8-26 15366 Humboldt Christmas Prairie. Comment
  UC1196373  Chrysolepis chrysophylla var. chrysophylla Joseph P. Tracy 1935-7-29 14348 Humboldt gap at head of Red Cap Creek connecting to Devil's Backbone (Trinity Summit); Trinity Summit 1524 Comment
  CAS-BOT-BC30122  Chrysolepis chrysophylla var. minor Carl B. Wolf 1937-9-13 9338 Humboldt North Coast Range, Summit of Grouse Mt. 1644 Comment
  SEINET7712239  Chrysopsis oregona Chesnut, Drew 1888-7-21 Humboldt S. Fork Mtn. Comment
  HSC26641  Chrysosplenium glechomifolium Thomas W. Nelson 1971-5-19 443 Humboldt HSC Campus beside Jolly Giant Creek Comment
  UC552729  Cinna latifolia Joseph P. Tracy 1935-7-25 14244 Humboldt Lower end Brett Hole Trinity Summit; , Lower end of Brett Hole 1584 Comment
  SEINET8726116 Image available Circaea alpina Unknown 1936-1 s.n. Humboldt Damp wooded bank of Yager creek at 2400 feet altitude, Humboldt County, California. 732 Comment
  HSC74438  Circaea alpina subsp. pacifica Gail Newton 1980-8-10 2069 Humboldt Near Blake Mtn. 1707 Comment
  UC668240  Circaea alpina subsp. pacifica Joseph P. Tracy 1937-6-20 15349 Humboldt 10 mi. up stream from mouth of Bear R.; Bear R. 152 Comment
  UC162349  Circaea alpina subsp. pacifica Joseph P. Tracy 1911-7-5 3311 Humboldt near its mouth Willow Creek; Northern Coast Ranges, Willow Creek (tributary of Trinity R. 304 Comment
  HSC37657  Cirsium arvense R. Sutherland 1976-8-19 6 .19876 Humboldt 259 Comment
  SEINET9341561  Cirsium brevifolium Unknown 1948-9-3 1850 Humboldt Humboldt Comment
  CAS-BOT-BC284440  Cirsium brevistylum L. R. Abrams 1916-7-18 6082 Humboldt Between Cercata and Trinidad Comment
  BLMAR404  Cirsium douglasii var. breweri Clara Sander 2005-7-1 404 Humboldt Horse Mtn, Titlow hill road: growing along the roak banks 1066 Comment
  HSC97973  Cirsium occidentale var. candidissimum Cara Witte 2007-6-21 318 Humboldt Along National Forest 1 on Kinsey Ridge. Approximately 2 miles southeast of intersection with 5N04. Near cattleguard. 1390 Comment
  JEPS59230  Cirsium occidentale var. candidissimum W. L. Jepson 1902-6-20 1893 Humboldt Ft. Seward Ranch ridge 1219 Comment
  UC1223056  Cirsium occidentale var. candidissimum Joseph P. Tracy 1942-8-9 17302 Humboldt at Willow Creek Trinity River Valley, Willow Creek 152 Comment
  SEINET202627  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 s 1280 Comment
  UC582536  Cirsium remotifolium H. E. Parks and Joseph P. Tracy 1934-7-13 13383 Humboldt vicinity of Trinidad; Northern Coast Region 60 Comment
  SEINET5506249 Image available Cirsium remotifolium var. odontolepis Joseph P. Tracy 1949-8-11 18472 Humboldt E of headwaters of Redwood Creek, beginning where powerline crosses and going South; Kinsey Ridge; S from Grouse Mtn, 2 to 6 Mi 1280 Comment
  UC677710  Clarkia amoena S. K. Harris 1936-6-25 671 Humboldt road from Petrolia to Cape Mendocino (s side of Domingo Gulch) 30 Comment
  CAS-BOT-BC160917  Clarkia amoena subsp. amoena C. Hart Merriam 1922-7-13 s.n. Humboldt Fortuna Comment
  CAS-BOT-BC160959  Clarkia amoena subsp. amoena S. K. Harris; J. P. Tracy 1936-6-10 3277 Humboldt West of the South Fork of the Trinity River near its mouth 640 Comment
  JEPS43698  Clarkia amoena subsp. amoena Milo S. Baker 1923-8-3 172 Humboldt near Trinidad; North Coast Comment
  UC183694  Clarkia gracilis subsp. gracilis Joseph P. Tracy 1913-6-23 4284 Humboldt ridge between Van Duzen River and Mad River (near summit, on Dinsmore's Ranch); Northern Coast Ranges 1066 Comment
  UC562525  Clarkia purpurea subsp. quadrivulnera Joseph P. Tracy 1933-7-3 12634 Humboldt Willow Creek Trinity River Valley 152 Comment
  CAS-BOT-BC172505  Clarkia purpurea subsp. quadrivulnera Doris K. Kildale 1928-6-24 5293 Humboldt Horse Mountain Road near junction of Willow Creek Road 853 Comment
  UC1196976  Clarkia purpurea subsp. quadrivulnera Joseph P. Tracy 1936-6-9 14898 Humboldt 4 mi nw Petrolia (Domingo Hill) 213 Comment
  UC144095  Clarkia purpurea subsp. quadrivulnera Joseph P. Tracy July, 1908 2762 Humboldt near Low Gap (ridge between Van Duzen and Mad Rivers, Humboldt and Trinity Counties); Northern Coast Ranges 914 Comment
  CAS-BOT-BC164822  Clarkia rhomboidea Doris K. Kildale 1925-6-21 723 Humboldt Briceland Bridge 1/2 mile west of Garberville 114 Comment
  HSC54010  Clarkia rhomboidea Griswold, Butler 1979-7-10 7136 Humboldt Near Board Camp Mtn., close to the town of Willow Creek. 1350 Comment
  CAS-BOT-BC164823  Clarkia rhomboidea Doris K. Kildale 1928-6-24 5292 Humboldt Horse Mountain road near junction of Willow Creek road 853 Comment
  JEPS127651  Claytonia Jurriaan M. de Vos 2014-7-1 301 Humboldt Along Bald Hills Road, near Dolason trail head parking. Comment
  HSC36519  Claytonia exigua subsp. exigua J. D. Ackerman, A. M. Montalvo 1973-3-27 48 Humboldt 1.5 mi. N of Manila 6 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
  HSC45629  Claytonia perfoliata Diane L. Reed 1978-4-22 29 Humboldt Tish Tang Campground, 5 mi. N of Willow Creek on Hwy. 96 Comment
  RSA276888  Claytonia perfoliata subsp. mexicana C. Fellows 1972-4-29 480 c Humboldt 8 miles ESE of Eureka, 3.1 miles above the town of Freshwater on the W side of the road to Kneeland, alt 20m below the road (and the dump). 610 Comment
  HSC34256  Claytonia rubra subsp. depressa A. Montalvo 1975-5-24 280 Humboldt Samoa Dunes off Samoa Blvd., across from the boat landing Comment
  HSC17697  Claytonia rubra subsp. depressa D. E. Anderson 1962-3-4 1926 Humboldt About 2 mi. S of Trinidad Comment
  UC673000  Claytonia rubra subsp. rubra Joseph P. Tracy 1929-7-4 8617 Humboldt French Camp Ridge 1066 Comment
  HSC96937  Claytonia rubra subsp. rubra Elizabeth Kimbrough, Whitney Meier 2007-6-13 7 Humboldt Grouse Mtn., 1 mi. E of NF1 on FS Rd. 5N04 1524 Comment
  UC672999  Claytonia rubra subsp. rubra Joseph P. Tracy 1937-5-17 15286 Humboldt Willow Creek; Trinity River Valley 152 Comment
  HSC89441  Claytonia sibirica P. A. Daly 1985-5-3 36 Humboldt Trinidad Head 61 Comment
  UC1052461  Claytonia sibirica H. E. Parks Apr 1933 1421 Humboldt Spruce Cove; Trinidad Comment
  UC275282  Claytonia sibirica Joseph P. Tracy 1923-6-20 6330 Humboldt White Thorn Valley; Northern Coast Ranges 304 Comment
  RSA0059513  Claytonia sibirica H. M. Pollard 1948-7-22 s.n. Humboldt Perch Creek Canyon, near Orleans. Comment
  SEINET11933917  Claytonia sibirica F. H. Utech 1986-1 86 -417 Humboldt Cape Mendocino, along Pacific Ocean 5 Comment
  SEINET215096  Claytonia sibirica C. Wray 1964-3-27 12 Humboldt On William Hunsaker property Monument Rd ca 2 mi SW of Rio Dell Comment
  CAS-BOT-BC92592  Clematis ligusticifolia J. Clausen 1932-9-19 697 Humboldt Dyerville, Eel River. Comment
  CAS-BOT-BC92596  Clematis ligusticifolia Mrs. E. C. Van Dyke 1931-6-30 s.n. Humboldt Willow Creek. Comment
  UC1134574  Clintonia andrewsiana A. E. Wieslander 1931-5-17 194 Humboldt Orick-Orleans Road Comment
  UCD139622  Clintonia andrewsiana T. E. Weier 1942-5-22 s.n. Humboldt near Dyerville, Highway 101. Comment
  HSC48846  Clintonia uniflora Brad Klipfel 1973-7-15 205 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC101087  Coincya monensis Andrea Pickart 2009-2-20 729 Humboldt Manila Dunes; End of Lupine Ave., Manila 15 Comment
  HSC20587  Collinsia grandiflora Elrid H. Spinas 1948-6-16 53 Humboldt Horse Mtn. Comment
  JEPS25058  Collinsia grandiflora Joseph P. Tracy 1933-6-13 12572 Humboldt Hoopa Mountain; near summit on road from Hoopa westward to Blair's 1066 Comment
  HSC56465  Collinsia greenei Griswold, Butler 1979-7-12 7270 Humboldt Near Cedar Creek, close to the town of Willow Creek 1158 Comment
  UC582467  Collinsia heterophylla Joseph P. Tracy 1927-5-30 8089 Humboldt vicinity of Garberville 121 Comment
  JEPS13364  Collinsia linearis Harold E. Parks 1934-6-14 4789 Humboldt ca 11 mi air-line ssw Willow Creek (Horse Mtn); Horse Mtn. 1432 Comment
  UC1115823  Collinsia parviflora Joseph P. Tracy 1939-7-9 16332 Humboldt Snow Camp 1402 Comment
  HSC40672  Collinsia parviflora Thomas W. Nelson, Jane P. Nelson 1976-7-1 2929 Humboldt Along beanch to W of Mt. Lassic (Signal Peak) 1677 Comment
  HSC97483  Collinsia parviflora C. Witte 2007-5-10 18 Humboldt Along National Forest 1, near Kinsey Ridge. .2 miles south of intersection with 5N04. 1451 Comment
  HSC31203  Collinsia rattanii D. E. Anderson 1972-6-20 5744 Humboldt Along the Redwood Valley-Hoopa Rd., E of the summit. Comment
  HSC58045  Collinsia rattanii Gilbert Muth 1979-8-1 11904 Humboldt Near Mill Creek Lakes, close to Hoopa 1692 Comment
  HSC100661  Collinsia sparsiflora Carl C. Marshall May 1887 497 Humboldt Kneeland Prairie. Comment
  HSC48850  Collomia grandiflora Brad Klipfel 1973-7-15 208 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  JEPS71020  Collomia grandiflora Joseph P. Tracy 1932-7-13 10501 Humboldt open places Trinity Summit, Corral Prairie 1584 Comment
  HSC73667  Collomia heterophylla M. A. Baker 1980-7-15 2963 Humboldt Near Whiting Ridge. 1341 Comment
  UC1197850  Collomia heterophylla Joseph P. Tracy 1911-7-5 3324 Humboldt near its mouth Northern Coast Ranges, Willow Creek (tributary of Trinity Ri 304 Comment
  HSC70702  Collomia tracyi Gail Newton 1980-7-15 1550 Humboldt Near Sims Mtn. 1311 Comment
  JEPS109809  Collomia tracyi Dean W. Taylor 2004-6-24 19133 Humboldt Horse Mountain, along Titlow Hill Road 0.4 miles north from the junction with the road to the mountain summit 1310 Comment
  JEPS26243  Collomia tracyi Joseph P. Tracy 1940-7-7 16670 Humboldt on rocky banks Grouse Mt. 1463 Comment
  UC978529  Collomia tracyi Joseph P. Tracy 1939-8-16 16420 Humboldt Grouse Mountain 1524 Comment
  UC562291  Convolvulus arvensis Joseph P. Tracy 1934-7-15 13407 Humboldt near Fields Landing; North Coast Ranges, around Humboldt Bay 6 Comment
  UC902062  Convolvulus arvensis Joseph P. Tracy 1949-7-31 18400 Humboldt Willow Creek Trinity River Valley 152 Comment
  CAS-BOT-BC286025  Conyza canadensis Carl D. Duncan 1920-9-22 s.n. Humboldt Hoopa Valley Comment
  SEINET10474193  Conyza canadensis Mary Susan Taylor 1982-10-24 Taylor 5182 A Humboldt T5N R1W nw sec 15. Eureka quad. Samoa, under bridge, ca. 1 mi nw of Eureka. Sea level. Sandy soils. 0 Comment
  JEPS64347  Corallorhiza maculata W. L. Jepson 1902-6-28 1947 Humboldt Hupa Rd Green Point Ranch (ridge) 914 Comment
  RSA246762  Corallorhiza maculata Robert F. Thorne, Percy C. Everett 1965-8-5 35135 Humboldt Mt. Chamisal: below summit. 747 Comment
  HSC16586  Corallorhiza maculata Doris K. Kildale 1926-5-2 1845 Humboldt Bald Mtn. road, between Bald Mtn. House and junction of Redwood Creek Road. Comment
  HSC98347  Corallorhiza striata T. Jimerson, J. Pageau 1979-6-12 527 Humboldt Near Hopkins Butte, close to the town of Orleans. 1036 Comment
  HSC90780  Cordylanthus maritimus subsp. palustris Peter Sorensen 1976-6-16 Humboldt Woodley Island. Comment
  JEPS55932  Cordylanthus maritimus subsp. palustris T. I. Chuang, L. R. Heckard and R. Bacigalupi 1968-7-3 6455 Humboldt Coastal Salt Marsh, ne edge Arcata Bay Comment
  JEPS6033  Cordylanthus maritimus subsp. palustris Joseph P. Tracy 1938-7-15 16064 Humboldt borders of salt marsh at Fields Landing, around Humboldt Bay Humboldt Bay; Northern Coast Region 3 Comment
  UCR122376  Cordylanthus maritimus subsp. palustris George K. Helmkamp, E. A. Helmkamp 2001-7-8 7008 Humboldt North Coast, north spit of Samoa Peninsula, 0.5 mi north of CA Hwy 255 bridge over Humboldt Bay 6 Comment
  JEPS32995  Cordylanthus tenuis subsp. viscidus Freed W. Hoffman 1949-7-14 3063 Humboldt Pine Point Ridge sw Mt. Lassic Lookout; North Coast Ranges Comment
  CAS-BOT-BC32935  Corethrogyne filaginifolia var. californica Henry Nicholas Bolander 1867-6-1 s.n. Humboldt On the coast at Shelter Cove and at Fort Bragg Comment
  HSC60034  Cornus nuttallii M. A. Baker 1978-5-6 467 Humboldt Junction of Bald Hills Rd. with French Camp Rd. Comment
  RSA273406  Cornus nuttallii Thomas W. Nelson, Jane Nelson, A. Nelson 1976-6-15 2733 Humboldt Off 2S08 just west of Goat Hill. 1463 Comment
  CAS-BOT-BC212185  Cornus sericea Carl B. Wolf 1937-8-13 9251 Humboldt 11 mi. E. of Hoopa Valley on new road towards Trinity Summit, North Coast Range 1524 Comment
  HSC57681  Cornus sericea subsp. sericea G. L. Clifton, Griswold 1979-7-25 10887 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1784 Comment
  UC183572  Cornus sericea subsp. sericea Joseph P. Tracy 1912-10-20 4010 Humboldt Alton Northern Coast Region, Alton 30 Comment
  UC183589  Cornus sericea subsp. sericea Joseph P. Tracy 1913-6-14 4125 Humboldt opposite Buck Mt. (Dinsmore's Ranch, Valley of Van Duzen R.); Northern Coast Ranges, Valley of Van Duzen R., Dinsmore's Ra 762 Comment
  UC502976  Cornus sericea subsp. sericea Joseph P. Tracy 1932-7-16 10629 Humboldt near Corral Prairie (Trinity Summit); Klamath Mts., Trinity Summit 1524 Comment
  UC668295  Cornus sericea subsp. sericea Joseph P. Tracy 1935-7-25 14230 1/2 Humboldt near Corral Prairie (Trinity Summit); Trinity Summit 1584 Comment
  RSA24326  Cornus sessilis C. B. Wolf 1941-2-28 4048 Humboldt Junction of Willow Creek and its E. fork. 457 Comment
  JEPS53365  Coronopus didymus Lincoln Constance 1934-6-18 902 Humboldt border of N. Dyerville Flat, near South Fork Rail Road Station and Post Office, South Fork Eel River South Fork Eel River; Bull Creek Region, South Fork Eel River Comment
  UC1011081  Corylus californica Emanuel Fritz 1941-10-4 8610 Humboldt Van Duzen River 91 Comment
  HSC41319  Corylus cornuta subsp. californica Brad Klipfel 1974-9-2 528 Humboldt Horse Mtn. Comment
  HSC104410  Corylus cornuta subsp. californica Adam N. Canter 2017-6-15 9 Humboldt Near Fields Landing; Humboldt Hill, Spring Street 100 Comment
  RSA246787  Cotula coronopifolia R. F. Thorne, Percy C. Everett 1965-8-8 35272 Humboldt N edge of Eureka, E of Hwy. 101 5 Comment
  UCR275124  Crataegus monogyna Charity A. Hartshorn 2016-4-24 10 Humboldt Arcata Marsh & Wildlife Sanctuary, east end of Klopp Lake 7 Comment
  CAS-BOT-BC291484  Crepis capillaris Roxana S. Ferris 1955-7-11 12977 Humboldt Near Blue Lake Comment
  HSC56938  Crepis pleurocarpa Overton, Butler 1979-7-23 9412 Humboldt Near Horse Mtn., close to the town of Willow Creek 1478 Comment
  RSA43685  Crepis setosa H. M. Pollard 1947-8-21 s.n. Humboldt roadside between Orleans and Boyse Creek Comment
  UC1199228  Crocidium multicaule Joseph P. Tracy 1918-5-1 4911 Humboldt top of Lawrence Creek Hill; Kneeland Prairie, Lawrence Creek Hill 762 Comment
  HSC46059  Crocosmia X crocosmiiflora Catherine Chin 1978-8-5 103 Humboldt Arcata, at A and 11th Sts. Comment
  RSA167430  Crocosmia X crocosmiiflora Joseph P. Tracy 1950-8-31 19344 Humboldt Garden escape at 3rd and I streets. Eureka. Comment
  UC1103234  Crypsis vaginiflora Joseph P. Tracy 1931-9-7 9668 Humboldt Willow Creek Northern Coast Ranges, Trinity River Valley 152 Comment
  SBBG16519  Cryptantha leiocarpa D. E. Breedlove 1962-6-7 3051 Humboldt 1.5 mi S of Samoa on peninsula on W side of Humboldt Bay Comment
  UC1239665  Cryptantha leiocarpa Joseph P. Tracy 1927-6-26 8212 Humboldt Stone Lagoon Northern Coast Region 6 Comment
  UC175791  Cryptantha torreyana Joseph P. Tracy 1909-8-1 3071 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  UC71489  Cryptogramma acrostichoides Joseph Burtt Davy and W. C. Blasdale 1899-6-21 5844 Humboldt Trinity Summit Comment
  JEPS39837  Cupressus lawsoniana W. L. Jepson 1902-6 2131 Humboldt Three Creeks to summit of ridge (on grade to Redwood Creek) 914 Comment
  HSC58088  Cuscuta californica G. L. Clifton, Griswold 1979-8-1 11997 Humboldt Near N Trinity Mtn., close to the town of Hoopa 1799 Comment
  UC198629  Cuscuta occidentalis Joseph P. Tracy 1916-9-6 4760 Humboldt headwaters of Canoe Creek Northern Coast Ranges, Grasshopper Ridge, Canoe Creek 609 Comment
  RSA249509  Cuscuta salina R. F. Thorne, P. C. Everett 1965-8-8 35280 Humboldt N edge of Eureka, E of Hwy 101. 3 Comment
  UCD60076  Cynodon dactylon Joseph P. Tracy 1940-10-17 16763 Humboldt South Fork Station. 60 Comment
  UC177208  Cynoglossum grande Joseph P. Tracy 1913-6-20 4229 Humboldt opposite Buck Mt.; Northern Coast Ranges, Van Duzen R. Valley 762 Comment
  UC175683  Cynoglossum occidentale Joseph P. Tracy 1911-7-7 3424 Humboldt near summit Brannan Mt. (ridge n. of Willow Creek, between Willow and Campbell Creeks); Northern Coast Ranges, Brannan Mt. 1219 Comment
  CAS-BOT-BC190371  Cynosurus cristatus Peter H. Raven; R. Snow 1958-7-21 13657 Humboldt 2.0 miles north of Cape Mendocino. Comment
  SEINET11696011  Cynosurus cristatus Unknown 1956-7-19 s.n. Humboldt 4.5 mi NW of Petrolia Comment
  HSC53799  Cynosurus echinatus Griswold, Butler 1979-7-10 6219 Humboldt Near Kinsey Ridge, close to the town of Willow Creek 1244 Comment
  HSC9521  Cynosurus echinatus Paul Shields Jun 1955 Humboldt 6 mi. W of Myers Flat Comment
  UC1145091  Cynosurus echinatus Joseph P. Tracy 1947-6-8 17708 Humboldt 5 mi e Carlotta (by old Strong's District School House); e of Carlotta 60 Comment
  HSC37996  Cyperus eragrostis Peter Sorensen 1976-6-19 Humboldt Woodley Island Comment
  JEPS64063  Cyperus squarrosus Joseph P. Tracy 1916-9-5 4773 Humboldt 4 mi. above mouth S. Fork Eel R.; Northern Coast Ranges, S. Fork Eel R. 60 Comment
  UC213327  Cyperus squarrosus Joseph P. Tracy 1920-8-15 5362 Humboldt Klamath R. at Bluff Creek; Northern Coast Ranges, Klamath R. 152 Comment
  HSC55124  Cystopteris fragilis G. L. Clifton, Griswold 1979-8-1 11924 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1692 Comment
  HSC98541  Cystopteris fragilis Cara Witte 2008-6-9 704 Humboldt Board Camp Mountain. Forest Service Road 4N38. 1418 Comment
  HSC89445  Cytisus scoparius P. A. Daly 1984-5-13 20 Humboldt Along trail at Trinidad Head 61 Comment
  CDA4074  Cytisus scoparius T. C. Fuller 1961-3-22 5939 Humboldt North slope, Humboldt Hill, Eureka. 0 Comment
  HSC75740  Dactylis glomerata Bill Copeland 1980-6-26 305 Humboldt Near Murphy Meadow 914 Comment
  HSC9530  Dactylis glomerata R. D. Zortman 1963-4-14 30 Humboldt 5.0 mi. NE of Arcata, off Warren Creek Road. 91 Comment
  HSC97568  Dactylis glomerata Cara Witte 2007-6-7 220 Humboldt Along National Forest 1 on Kinsey Ridge. Approximately 2 miles southeast of intersection with 5N04. Near cattleguard. 1371 Comment
  UC1103248  Dactylis glomerata Joseph P. Tracy 1919-8-28 5186 Humboldt Eureka; Northern Coast Ranges, Eureka 0 Comment
  CAS-BOT-BC189737  Danthonia californica Joseph P. Tracy 1932-7-10 10392 Humboldt Trinity Summit. Klamath Mountains. Corral Prairie. 1524 Comment
  UC1103255  Danthonia californica Joseph P. Tracy 1926-7-5 7727 Humboldt Valley of South Yager Creek Comment
  RSA293102  Danthonia californica var. californica J. P. Smith 1977-7-3 9231 Humboldt Road to Fish lake (Forest Service Road 13N01), 3.5 miles from its junction with State Route 36. 488 Comment
  UC1198472  Datisca glomerata Joseph P. Tracy 1911-7-10 3494 Humboldt Valley of Trinity River (near mouth of Willow Creek); Northern Coast Ranges, Willow Creek 152 Comment
  CDA9725  Daucus carota D. G. Kelch 2007-7-25 7 .508 Humboldt Along Hwy 299 between Lord-Ellis Summit and Hwy 96. Comment
  UC642295  Daucus carota Joseph P. Tracy 1932-9-16 10796 Humboldt near mouth Mad River 30 Comment
  UC1197351  Daucus pusillus J. P. Tracy 1899-7-22 275 Humboldt Eureka Comment
  UC32463  Daucus pusillus Harley P. Chandler May, 1901 1154 Humboldt Humboldt Bay North Coast Ranges, Humboldt Bay 3 Comment
  UCSB15507  Daucus pusillus 1962-6-7 Humboldt 1.5 miles south of Samoa on peninsula on western side of Humboldt Bay Comment
  UC1196324  Delphinium andersonii Joseph P. Tracy 1935-7-24 14190 Humboldt rocky exposed places near Ranger Station; Trinity Summit 1828 Comment
  UC1196318  Delphinium decorum subsp. decorum Joseph P. Tracy 1914-5-3 4418 Humboldt bluff s of Bucksport (vicinity of Eureka); Northern Coast Region 0 Comment
  HSC24969  Delphinium decorum subsp. tracyi Elrid H. Spinas 1948-5-15 2 Humboldt Horse Mtn. Comment
  CHSC53294  Delphinium nudicaule L. P. Janeway 1984-5-13 774 Humboldt Along the Kneeland/Bridgeville Road ca 15 mi east of the Kneeland post office just past Lone Star Junction. On a roadcut near Lone Star Creek. 609 Comment
  SEINET12099565  Delphinium nudicaule J. P. Tracy 1950-1 18815 Humboldt Mail Ridge, N of Harris 7 mi, "Huestis Rock" on NE side of Ridge Comment
  CHSC35593  Delphinium nuttallianum Thomas W. Nelson 1980-6-10 5443 Humboldt Six Rivers National Forest. Along branch road off Swayback Ridge Road ca. 1/2 mile east of junction. 1371 Comment
  HSC32935  Delphinium nuttallianum Thomas W. Nelson 1973-5-30 972 Humboldt Humboldt/Trinity Co. line, Mt. Lassic 1790 Comment
  JEPS60594  Delphinium nuttallianum Joseph P. Tracy 1933-6-13 12570 Humboldt on road from Hoopa westward to Bair's (near summit); Hoopa Mountain 1066 Comment
  UC1075803  Delphinium trolliifolium E. K. Balls and L. W. Lenz 1955-5-15 20736 Humboldt hills 9.9 mi sw Fernbridge (along Old Coast rd to Capetown) 502 Comment
  UC1225745  Delphinium trolliifolium Joseph P. Tracy 1946-6-15 17561 Humboldt lower slopes of mt Horse Mountain 1066 Comment
  UC668069  Delphinium trolliifolium Joseph P. Tracy 1935-6-23 14000 Humboldt near Coyote Peak; French Camp Ridge 1066 Comment
  UCD61243  Deschampsia cespitosa Linda M. Barker 1976-7-5 1645 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  CAS-BOT-BC194339  Deschampsia cespitosa subsp. beringensis Joseph P. Tracy 1927-7-16 8257 Humboldt Mouth of Elk River, around Humboldt Bay, just south of Eureka 6 Comment
  UCR32148  Deschampsia cespitosa subsp. beringensis David J. Keil 1983-7-2 17301 Humboldt Humboldt Bay salt marsh at Arcata Corporation Yard [600 G St.] Comment
  UC1103220  Deschampsia danthonioides Joseph P. Tracy 1912-7-31 3896 Humboldt n.w. slope Buck Mt.; Northern Coast Ranges, Burr Valley, Buck Mt. 1066 Comment
  CAS-BOT-BC201770  Deschampsia elongata L. R. Abrams 1918-6-16 7153 Humboldt Willow Creek Comment
  HSC38624  Deschampsia elongata D. E. Anderson, J. P. Smith 1971-6-21 - 1105 Humboldt 2 mi. E of Garberville, on rd. to Alderpoint. Comment
  HSC40402  Deschampsia elongata Thomas W. Nelson 1976-7-9 3006 Humboldt S of Mtn. Lassic, (Signal Peak). 1707 Comment
  HSC75453  Deschampsia elongata J. O. Sawyer 1980-7-18 3595 Humboldt North Trinity Mountain Research Natural Area, north of Mill Creek Lake to Red Cap Hole. Comment
  RSA245021  Deschampsia elongata D. E. Anderson 1970-5-21 5081 Humboldt Scotia Bluffs Comment
  UC1103215  Deschampsia elongata J. P. Tracy 1899-7-22 331 Humboldt immediate vicinity of Eureka 0 Comment
  UC1103217  Deschampsia elongata J. P. Tracy 1901-4-26 1043 Humboldt 6 mi. s. Eureka (Humboldt Hill); Humboldt Hill 0 Comment
  UC905063  Deschampsia elongata Henry M. Pollard 1948-7-19 Humboldt Orlegno to Red Cap Creek (n. river rd.) Comment
  SEINET4567133  Deschampsia elongata J. B. Davy 1899-6-12 5476 Humboldt Elk Prairie Comment
  HSC56461  Dianthus armeria Griswold, Butler 1979-7-12 7249 Humboldt Near Cedar Creek, close to the town of Willow Creek 1158 Comment
  UC1586878  Dicentra formosa Juha Pykala and D. H. Norris 1987-6-10 1525 Humboldt about 1-2 mi s Onion Lake (on Onion Lake Road); Six Rivers National Forest 1300 Comment
  CAS-BOT-BC402414  Dicentra formosa subsp. formosa N. Wynne; M. Peckham; J. Bamesberger 1994-5-6 41 Humboldt Intersection of Hwy 299 and Redwood Valley Rd on south side of Hwy 299 609 Comment
  UCD95519  Dicentra formosa subsp. formosa P. B. Kennedy 1929-6-14 s.n. Humboldt Arcata, Range of California Barrel Co. Comment
  SEINET200695  Dichelostemma X venustum Joseph P. Tracy 1923-7-4 6524 Humboldt Valley of South Yager Creek 762 Comment
  UC1281812  Dichelostemma capitatum Richard Spellenberg 1965-6-14 1121 Humboldt about 2 mi e Kneeland; Kneeland Prairie Comment
  RSA21187  Dichelostemma ida-maia Carl B. Wolf 1937-8-11 9146 Humboldt North Coast Range, 3 mi W of little Van Duzen River at summit of grade - Dinsmore to Bridgeville. 762 Comment
  HSC103003  Digitalis purpurea J. P. Smith 2014-5-26 13842 Humboldt Along the Hammond Trail north of Murray Road in McKinleyville 30 Comment
  UC1145032  Digitaria ischaemum Joseph P. Tracy 1950-9-22 19371 Humboldt 8 mi below Orleans (near Slate Creek, Klamath River); Klamath River, near Slate Creek 121 Comment
  SEINET8733128 Image available Diplacus aurantiacus H. E. Parks, S. T. Parks 1951-1 s.n. Humboldt Along bay shore near landing. Trinidad. Comment
  UC535769  Disporum hookeri Eleanor Armstrong 1934-5-27 Humboldt Richardson Grove Comment
  CHSC13521  Disporum smithii A. R. Morrison 1974-4-27 Humboldt Ca. 1.5 mi. off Hwy. 101 on Westhaven Rd., Trinidad. 45 Comment
  SDSU11887  Disporum smithii Harvey 1938-8-13 2243 Humboldt Humbolt State Redwood Park Comment
  UC519703  Disporum smithii Victor Duran 1933-5-12 3413 Humboldt Dyerville, South Fork of the Eel River South Fork Eel River; Dyerville, South Fork Eel River Comment
  JEPS14696  Dodecatheon alpinum W. L. Jepson Jul 16 1902-Jul 23 1902 2105 Humboldt Trinity Summit 2133 Comment
  UC1198623  Dodecatheon hendersonii Joseph P. Tracy 1933-7-11 12702 Humboldt Grouse Mountain North Coast Ranges, Grouse Mountain 1524 Comment
  UC602557  Downingia cuspidata Joseph P. Tracy 1935-5-25 13843 Humboldt Fort Seward 106 Comment
  JEPS14452  Downingia elegans Joseph P. Tracy 1923-6-20 6339 Humboldt Miranda 121 Comment
  JEPS1611  Draperia systyla Joseph P. Tracy 1935-7-31 14389 Humboldt Devil's Backbone; ridge connecting Trinity Summit with Salmon Summit 1524 Comment
  HSC23462  Drosera rotundifolia Norman Dennis 1965-6-3 140 Humboldt Big Lagoon County Park, SW corner of Big Lagoon Comment
  SEINET3164219  Drosera rotundifolia N. Dennis 1965-6-30 140 Humboldt Sphagnum bog at Big Lagoon County Park, southwest corner of Big Lagoon Comment
  HSC63033  Drymocallis glandulosa J. P. Smith, J. O. Sawyer 1973-5-12 6668 Humboldt 2 mi. from Redwood Creek on Hoopa Rd. Comment
  CAS-BOT-BC159616  Drymocallis glandulosa var. glandulosa Doris K. Kildale 1926-4-30 1945 Humboldt Briceland Bridge 1/2 mile west of Garberville 114 Comment
  HSC76190  Drymocallis glandulosa var. reflexa Overton, Butler 1979-7-24 9773 Humboldt Near Black Rock, close to the town of Willow Creek 1463 Comment
  RSA21039  Drymocallis glandulosa var. wrangelliana Carl B. Wolf 1937-6-19 8908 Humboldt Van Duzen River at Dunns Mill, 5 miles below Bridgeville. 91 Comment
  UC492178  Drymocallis lactea var. austiniae Joseph P. Tracy Jul 16 1930-Jul 19 1930 8976 Humboldt South Fork Mountain Northern Coast Ranges (wet meadow at McKay Camp) 1676 Comment
  HSC57943  Drymocallis lactea var. lactea G. L. Clifton, Griswold 1979-7-31 11614 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1719 Comment
  HSC32345  Drymocallis rhomboidea D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5638 Humboldt Senteney Rock, a large barren Franciscan Rock along Swayback Ridge. Comment
  HSC99640  Dryopteris arguta T. Jimerson, J. Pageau 1979-7-31 700 Humboldt Near Whiting Ridge. Close to town of Hyampom 1204 Comment
  CAS-BOT-BC428297  Dudleya farinosa Doris K. Kildale 1927-6-25 3544 Humboldt Shelter Cove. Comment
  SEINET5227018 Image available Dysphania botrys Unknown 2002-8-17 81 Humboldt On gravel bar in Eel River, 10 miles S of Garberville onHwy 101, at Benbow Drive. Comment
  UCD60874  Echinochloa crus-galli H. E. Parks Date Unknown 24213 Humboldt Spruce Cove, Trinidad. Comment
  UC1152070  Eleocharis bella Joseph P. Tracy 1949-6-25 18355 Humboldt 1463 Comment
  POM273092  Eleocharis obtusa Henry M. Pollard 1946-8-22 s.n. Humboldt Ullathorne Riffle, Klamath River, Orleans Region Comment
  UC666875  Eleocharis obtusa Joseph P. Tracy 1927-8-7 8319 Humboldt Lack Pond, opposite mouth of Willow Creek Trinity River Valley 152 Comment
  SD129632  Eleocharis pachycarpa Harold E. Parks June 1934 5275 Humboldt Trinidad, Spruce Cove. (IPB 10/07) Comment
  HSC96491  Eleocharis pachycarpa Gordon Leppig 1998-7-19 979 Humboldt Big Lagoon County Park, Big Lagoon Bog. 3 Comment
  SEINET201036  Elymus elymoides subsp. brevifolius Joseph P. Tracy 1919-9-23 5279 Humboldt Trinity Summit 1829 Comment
  HSC32330  Elymus elymoides var. californicus D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5634 Humboldt Senteney Rock, a large barren Franciscan Rock along Swayback Ridge. Comment
  HSC58661  Elymus elymoides var. elymoides G. L. Clifton, Griswold 1979-7-1 11948 Humboldt Near Horse Trail Ridge, close to the town of Hoopa. 516 Comment
  HSC58665  Elymus elymoides var. elymoides G. L. Clifton, Griswold 1979-8-1 12052 Humboldt Near High Spring, close to the town of Hoopa. 1798 Comment
  HSC74892  Elymus glaucus J. P. Smith 1977-7-3 9232 Humboldt On Forest Service Road 13N01 to Fish Lake, 3.5 mi. from its junction with Highway 36 488 Comment
  HSC9718  Elymus glaucus D. E. Anderson, T. O. Preston 1963-3-1 19 Humboldt Near bridge over Supply Creek. Comment
  RSA129277  Elymus glaucus Joseph P. Tracy 1935-7-21 14119 Humboldt mouth of Bremer Creek; Trinity River Valley, at Willow Creek 152 Comment
  RSA44455  Elymus glaucus Henry M. Pollard 1948-7-19 s.n. Humboldt River road between Orleans and Van Fleet Ranch Comment
  UC186000  Elymus glaucus Joseph P. Tracy 1912-6-9 3659 Humboldt Alton Northern Coast Region 30 Comment
  UC1146679  Elymus glaucus Freed W. Hoffman 1946-5-19 1729 Humboldt Mattole River North Coast Ranges Comment
  HSC97930  Elymus glaucus subsp. glaucus Cara Witte 2007-6-19 295 Humboldt Horse Mountain Botanical Area. Forest Service Road 6N38 1220 Comment
  UCD62371  Elymus glaucus subsp. glaucus A. H. Shunk 1923-7-12 Humboldt Briceland. Comment
  HSC10938  Elymus mollis subsp. mollis J. W. Johnson 1962-4-29 1297 Humboldt W.M. Lanphere Farm, Samoa Peninsula, Arcata. Comment
  UCD62646  Elymus trachycaulus Thomas Nelson; Jane Nelson 1976-7-26 3023 Humboldt Trinity-Humboldt Co. line: Along 1S07 West of Black Lassic. 1615 Comment
  UC562418  Epilobium brachycarpum Joseph P. Tracy 1933-8-30 13034 Humboldt Grouse Mountain North Coast Ranges 1524 Comment
  HSC98656  Epilobium brachycarpum Cara Witte 2007-7-26 589 Humboldt National Forest 1 on Kinsey Ridge. 1/4 mile south of intersection with 4N06. Near power poles. 1283 Comment
  HSC41821  Epilobium canum subsp. latifolium Thomas W. Nelson, Jane P. Nelson 1977-8-6 3722 Humboldt Between Blanket Creek and Bear Creek just below Blanket Rock 1494 Comment
  HSC97988  Epilobium canum subsp. latifolium Cara Witte 2007-7-8 438 Humboldt Board Camp Mountain. Trail 4E28. 1498 Comment
  RSA275298  Epilobium canum subsp. latifolium Thomas W. Nelson 1977-8-6 3722 Humboldt Lassics: serpentine ridge between Blanket Creek and Bear Creek just below Blanket Rock. Unsurveyed section east of T2S, R5E, Sec. 25 1494 Comment
  SBBG60140  Epilobium canum subsp. latifolium L. Rowntree 1931-7-21 Humboldt Mattole River 2 mi from Petrolia Comment
  HSC48320  Epilobium ciliatum subsp. ciliatum Brad Klipfel 1973-8-3 311 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  UC146137  Epilobium ciliatum subsp. ciliatum J. P. Tracy 1909-7-4 3004 Humboldt Immediate vicinity of Eureka 0 Comment
  UC161071  Epilobium ciliatum subsp. ciliatum Joseph P. Tracy 1911-7-5 3323 Humboldt along creek near mouth (creek is tributary of Trinity River); Northern Coast Ranges, Willow Creek 304 Comment
  UC902178  Epilobium ciliatum subsp. glandulosum Joseph P. Tracy 1949-8-7 18444 Humboldt Box Camp Trinity Summit (meadow) 1463 Comment
  UCD105926  Epilobium ciliatum subsp. glandulosum J. M. Tucker 1948-9-3 1858 Humboldt Clear Lake, near junction of Friday Ridge Road and Horse Mountain-Grouce Mountain Road. Comment
  RSA26250B  Epilobium ciliatum subsp. watsonii I. L. Wiggins 1940-7-10 9487 Humboldt Table Bluff Comment
  UC562516  Epilobium densiflorum Joseph P. Tracy 1934-7-9 13352 Humboldt bed of dry pond Dobbyn Creek 152 Comment
  UC144091  Epilobium hallianum Joseph P. Tracy 1908-6 2753 Humboldt near pond above mouth of Little Van Duzen (nw slope of mt.); Northern Coast Ranges, Buck Mountain 762 Comment
  BLMAR178  Epilobium minutum Donald Hazlett 1994-6-7 178 Humboldt King range, near horse Mt. Ridge rd 670 Comment
  HSC56400  Epilobium minutum Terry Griswold, Butler 1979-7-11 6984 Humboldt Near Snow Camp Lake, close to the town of Willow Creek 1393 Comment
  HSC44405  Epilobium minutum R. York 1978-5-6 157 Humboldt Along Bluff Creek Rd., 4 mi. from Jct. with Hwy. 96 610 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
  BLMAR297  Epipactis gigantea Jennifer Anthony-Wheeler 2002-7-23 297 Humboldt Headwaters Forest Reserve, growing in a pond with large floating rafts of logs 426 Comment
  RSA259564  Epipactis gigantea D. E. Anderson, J. P. Smith 1971-6-28 J- 1224 Humboldt Growing along Mad River ca. 2 mi. south of Blue Lake. Comment
  HSC99486  Equisetum arvense K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-14 145 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
  UC1239785  Equisetum arvense Joseph P. Tracy 1949-6-25 18357 Humboldt Box Camp Meadow Trinity Summit 1463 Comment
  CAS-BOT-BC57791  Equisetum telmateia Joseph P. Tracy 1934-6-28 13268 Humboldt By Salmon Creek. 9 Comment
  CHSC24858  Equisetum telmateia subsp. braunii M. B. Simpson 1976-4-10 25 Humboldt Ca. 100 yds e of West Haven Dr, on n side of Wagon Wheel Rd, ca. 13 mi n of Arcata. 121 Comment
  HSC36259  Equisetum telmateia subsp. braunii John Rehling 1974-8-19 19 Humboldt Along Cranell Rd. next to pasture, Trinidad Comment
  SEINET11836158  Erechtites argutus H. E. Parks, Parks, S. T. 1937-1 24033 Humboldt Spruce Cove, Trinidad 61 Comment
  HSC5490  Erechtites glomeratus H. E. Parks Aug 1941 24189 Humboldt Trinidad Comment
  CAS-BOT-BC299914  Erechtites minimus David D. Keck 1938-8-5 4767 Humboldt Big Lagoon Comment
  UC34650  Ericameria nauseosa var. speciosa Chesnut and Drew 1888-8-2 Humboldt Grouse Creek Comment
  CAS-BOT-BC296110  Erigeron foliosus var. confinis Marcus E. Jones 1931-7-16 29149 Humboldt Junction east of Arcata Comment
  UC1199403  Erigeron foliosus var. confinis Joseph P. Tracy 1927-5-14 8006 Humboldt near South Fork; Trinity River Valley 182 Comment
  UC468817  Erigeron foliosus var. confinis Joseph Burtt Davy and Walter C. Blasdale Jun 20 1899-Jan 1 1900 5713 Humboldt Hoopa Valley North-Western California, Mendocino Comment
  CDA14246  Erigeron foliosus var. foliosus P. Haggard 1998-6-12 s.n. Humboldt North Coast Ranges; Margin of Hwy 36, immed. W of Bridgeville along Van Duzen River. 0 Comment
  UC196573  Erigeron foliosus var. mendocinus Joseph P. Tracy 1916-9-4 4756 Humboldt head of Canoe Creek; Northern Coast Ranges, Grasshopper Ridge, Canoe Creek 609 Comment
  UC1199406  Erigeron inornatus var. inornatus Joseph P. Tracy 1935-7-27 14280 Humboldt open places at Corral Prairie; Trinity Summit 1584 Comment
  UC581715  Erigeron inornatus var. inornatus Joseph P. Tracy 1933-8-6 12935 Humboldt French Camp Ridge 1066 Comment
  HSC74424  Erigeron klamathensis Gail Newton 1980-7-24 1766 Humboldt Near Somes Mtn. 1615 Comment
  HSC66281  Erigeron maniopotamicus M. A. Baker 1980-6-28 2499 Humboldt Near Mad River Buttes 1445 Comment
  UCR179384  Erigeron philadelphicus Katherine Esau 1935-5-22 s.n. Humboldt Fort Seward 152 Comment
  POM54263  Erigeron philadelphicus H. P. Chandler 1901-06 1402 A Humboldt Klamath River. Comment
  UCSB15926  Erigeron philadelphicus Breedlove, Dennis 1962-6-8 Humboldt On U.S. Highway 101, 3 miles south of Orick Comment
  SEINET11851213  Erigeron strigosus J. P. Tracy 1950-1 19046 Humboldt Trinity River, E side, 1 mi N of mouth of Willow Creek Comment
  CAS-BOT-BC300279  Erigeron strigosus var. strigosus Henry M. Pollard 1948-7-18 s.n. Humboldt Near Orleans Comment
  UC162720  Eriodictyon californicum Joseph P. Tracy 1911-7-6 3360 Humboldt along road between Three Creeks and mouth of Willow Creek; Northern Coast Ranges, btw Three Creeks and Willow Creek 762 Comment
  BLMAR108  Eriogonum latifolium Jennifer Anthony-Wheeler 1994-9-8 108 Humboldt Samoa/manilla dunes, growing in every dune mat area in the samoa rare plant protection area 12 Comment
  CAS-BOT-BC259181  Eriogonum latifolium H. E. Parks 1941-8-1 24198 Humboldt Little River Comment
  LA206934  Eriogonum latifolium Carl Epling; Mrs. Epling 1935-8-15 sn Humboldt Arcata Spit Comment
  RSA171075  Eriogonum latifolium Robert F. Thorne 1957-9-3 19014 Humboldt Little River Beach, few miles S of Trinidad. Comment
  SEINET195334  Eriogonum lobbii H. M. Pollard 1946-9-2 s.n. Humboldt Orleans Mtn 1524 Comment
  UC1198103  Eriogonum luteolum var. luteolum J. P. Tracy 1900-9-10 957 Humboldt 6 mi above Hydesville (Van Duzen River bar); Van Duzen River 60 Comment
  UC162627  Eriogonum luteolum var. luteolum Joseph P. Tracy 1911-7-8 3451 Humboldt along Willow Creek near its mouth Willow Creek (tributary of Trinity River) 152 Comment
  RSA66020  Eriogonum nudum var. auriculatum F. W. Peirson 1923-7-10 4206 Humboldt Garberville. Comment
  UC198588  Eriogonum nudum var. nudum Joseph P. Tracy 1916-6-20 4729 Humboldt Dobbyn Creek 182 Comment
  UCR32155  Eriogonum nudum var. nudum David J. Keil 1983-7-1 17272 Humboldt North Coast Range, Bull Creek Flats [Mattole] Road, c. 13 mi. west of junction with US Hwy 101 Comment
  HSC99071  Eriogonum nudum var. nudum Cara Witte 2007-7-9 467 Humboldt Grouse Mountain Lookout. Forest Service Road 4N70. 1641 Comment
  UC176684  Eriogonum nudum var. nudum Joseph P. Tracy 1912-7-26 3858 Humboldt hills on the Ashfield Ridge North Coast Ranges, Kneeland Prairie, Ashfield Ridge 762 Comment
  HSC97941  Eriogonum nudum var. oblongifolium Cara Witte 2007-7-2 394 Humboldt Cold Spring. 1/2 mile south of Titlow Hill. 1406 Comment
  UC275279  Eriogonum roseum Joseph P. Tracy 1923-9-10 6547 Humboldt near South Fork Trinity River; Northern Coast Ranges, Trinity River Valley 182 Comment
  HSC74698  Eriogonum umbellatum Gail Newton 1981-7-24 2291 Humboldt Near Chaparral Mtn. 1512 Comment
  UC1225801  Eriogonum umbellatum var. argus Joseph P. Tracy 1947-7-5 17781 Humboldt ridge top 1 mi w Mud Springs; Trinity Summit 1158 Comment
  HSC99125  Eriogonum umbellatum var. goodmanii Cara Witte 2007-7-9 458 Humboldt Forest Service Road 4N32. 1.4 mile north of intersection with 4N32B. 1413 Comment
  UC672898  Eriogonum umbellatum var. nelsoniorum Joseph P. Tracy 1935-7-28 14328 Humboldt Head of Devil's Hole Trinity Summit, Devil's Hole 1828 Comment
  HSC74215  Eriogonum umbellatum var. polyanthum M. A. Baker 1980-7-15 2969 Humboldt Near Whiting Ridge. 1341 Comment
  SD42330  Eriogonum umbellatum var. polyanthum Carl B. Wolf 1937-8-13 9221 Humboldt North Coast Range; 8 mi. E. of Hoopa Valley on new road towards Trinity Summit Comment
  CAS-BOT-BC301008  Eriophyllum lanatum var. achilleoides Harold E. Parks; Joseph P. Tracy 1934-6-27 11063 Humboldt Grouse Mt. 1432 Comment
  POM265903  Eriophyllum lanatum var. achilleoides Lincoln Constance, Reed C. Rollins 1942-5-12 2886 Humboldt Mouth of Bluff Creek, 6 miles NE of Weitchpec. 152 Comment
  UC1223126  Eriophyllum lanatum var. achilleoides Joseph P. Tracy 1944-7-3 17480 Humboldt Willow Creek Trinity River Valley, Willow Creek 152 Comment
  UC169042  Eriophyllum lanatum var. achilleoides Joseph P. Tracy 1912-7-26 3837 Humboldt Kneeland Prairie Northern Coast ranges, Kneeland Prairie 762 Comment
  HSC97466  Eriophyllum lanatum var. achilleoides Cara Witte 2007-5-29 129 Humboldt White Oak Opening. Along Kinsey Ridge. 1238 Comment
  JEPS34585  Eriophyllum lanatum var. achilleoides Chestnut and Drew 1888-7-12 Humboldt Jarnigans Comment
  HSC5599  Eriophyllum staechadifolium D. E. Anderson 1961-8-25 1753 Humboldt 1.5 mi. S of Trinidad Comment
  RSA390945  Erodium botrys Unspecified 1932-7-14 16269 Humboldt Near Garberville Comment
  HSC90471  Erodium cicutarium Jean Hanson 1980-4-12 34 Humboldt Eureka, Indian Island in Humboldt Bay. W end of island. Comment
  HSC6759  Erysimum capitatum var. capitatum Francis Winter 1960-4-24 Humboldt 2 mi. NW of Sugar Pine Mtn., hilltop 915 Comment
  HSC6764  Erysimum capitatum var. capitatum Lincoln Constance 1934-6-22 919 Humboldt S Fork Eel River, summit of Grasshopper Peak down Canoe Creek Rd. to Redwood Hwy., and thense N to Dyerville Comment
  HSC74289  Erysimum capitatum var. capitatum M. A. Baker 1980-7-19 3013 Humboldt Near Bret Hole. 1814 Comment
  CAS-BOT-BC54919  Erysimum menziesii Joseph P. Tracy 1904-4-24 2031 Humboldt Ocean Beach at Humboldt Bay. Comment
  RSA0008583  Erysimum menziesii Vernon H. Oswald 2000-4-3 9911 Humboldt Near the junction of New Navy Base Road and the road to Fairhaven on the North Spit of Humboldt Bay. 9 Comment
  CAS-BOT-BC383051  Erythranthe guttata David B. Lowry 2005-5-16 PCK Humboldt Along Kneeland road, east of Slater Road 709 Comment
  HSC36498  Erythronium californicum Thomas W. Nelson, James Nelson, Jane P. Nelson 1975-6-14 1893 Humboldt Beside branch off FS 2S08 to Pine Mtn. Comment
  HSC38519  Erythronium californicum D. E. Anderson, J. P. Smith 1971-6-18 - 1081 Humboldt Horse Mtn. Comment
  RSA168934  Erythronium californicum Joseph P. Tracy 1950-4-20 18616 Humboldt Buck Mountain, lower foothills of its northwest slope. 2 miles west of Dinsmores. 762 Comment
  SEINET3991605  Erythronium californicum Unknown 1938-6-13 15896 Humboldt Horse Mountain , in open forest of Jeffrey Pine , on red soil in serpentine belt. 1433 Comment
  HSC98747  Erythronium grandiflorum Cara Witte 2008-6-2 664 Humboldt National Forest 1. 2 miles south of intersection with Forest Service Road 5N09. 1588 Comment
  UC162692  Erythronium revolutum Joseph P. Tracy 1911-5-7 3183 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  CAS-BOT-BC403033  Eschscholzia californica L. R. Abrams 1916-7-11 6058 Humboldt Mouth of Grizzly Creek on Van Duzon [Duzen] River Comment
  HSC26879  Eschscholzia californica Clifton Raymond Chesbrough 1973-6-19 86 Humboldt 1/2 mi. S of Trinidad along the coast Comment
  HSC98456  Eschscholzia californica D. E. Anderson 1961-9-2 1769 Humboldt 3 mi. S of Cape Mendocino 3 Comment
  UC35061  Eschscholzia californica Chesnut and Drew 1888-8-1 Humboldt Grouse Creek Comment
  RSA0012595  Eucalyptus globulus Clark L. Miller 1979-5-24 9 -157 Humboldt Along Highway 101 approx. 100 yards from Murrey Road off-ramp. Comment
  HSC44570  Eucephalus ledophyllus var. ledophyllus Brad Klipfel 1973-7-15 189 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  JEPS34035  Euchiton sphaericus W. L. Jepson 1936-8-15 17898 Humboldt 2 mi e Carlotta Comment
  CAS-BOT-BC310488  Euchiton sphaericus Joseph P. Tracy 1915-9-12 4677 Humboldt Northern Coast Ranges. Mouth of Laribee Creek 60 Comment
  POM47094  Euonymus occidentalis J. B. Feudge 1923-7-25 86 Humboldt Fortuna 23 Comment
  RSA24201  Euonymus occidentalis C. B. Wolf 1941-3-3 9996 Humboldt N. Coast Range, 3.3 miles W of Briceland on the road to Shelter Cove. 152 Comment
  UC1198984  Euphorbia crenulata Joseph P. Tracy 1926-4-11 7409 Humboldt Bridgeville; Northern Coast Ranges 228 Comment
  HSC33173  Euthamia occidentalis Thomas W. Nelson 1973-8-19 1112 Humboldt McKeown Ranch N of Dinsmore Comment
  CAS-BOT-BC310682  Euthamia occidentalis S. K. Harris; Charlotte Wilder 1938-9-7 s.n. Humboldt Bars of the Van Dusen River, above Blue Slide Comment
  CAS-BOT-BC310683  Euthamia occidentalis S. K. Harris; Charlotte Wilder 1938-9-7 s.n. Humboldt Bars of the Van Dusen River, above Blue Slide Comment
  SBBG53090  Festuca bromoides R. N. Philbrick 1976-6-25 11 Humboldt Capetown-Ferndale Rd, NW of Cape Mendocino, ca. 4 mi NW of Bear River at Capetown 457 Comment
  HSC97391  Festuca californica D. E. Anderson 1965-4-24 3547 Humboldt 2 mi. E of Berry Summit along Hwy. 299 Comment
  RSA10110  Festuca californica var. californica Joseph P. Tracy 9044 Humboldt South Fork Mountain; open glades along summit near Blake Lookout. 1738 Comment
  UC580793  Festuca elmeri H. S. Yates 1936-6-17 5690 Humboldt lower nw slope Buck Mountain; South Fork Pk., Buck Mountain 792 Comment
  RSA12524  Festuca idahoensis C. B. Wolf 1934-7-3 5912 Humboldt 21 miles from Orick on road to Weitchpec. 152 Comment
  UC71030  Festuca occidentalis Joseph Burtt Davy and Walter C. Blasdale 1899-6-19 5653 Humboldt Hoopa Mt. Comment
  UCD66132  Festuca occidentalis A. A. Beetle; G. L. Stebbins Jr. 1942-6-2 3466 Humboldt 2 miles west of Bridgeville, banks above Van Dusen River. Comment
  CAS-BOT-BC278964  Festuca rubra Ashley C. Browne 1936-6-11 s.n. Humboldt Patrick's Point State Park Comment
  HSC9989  Festuca rubra R. H. Berg 1963-4-30 57 Humboldt 1 mi. N of Arcata, on Hwy. 101 Comment
  UCD66390  Festuca rubra Collector Unknown 1951-6-18 Humboldt Near Hydesville. Comment
  CAS-BOT-BC278972  Festuca rubra W. R. Dudley 1893-6-20 s.n. Humboldt South Fork of Eel River Comment
  POM198640  Festuca subulata Joseph P. Tracy 1916-6-25 4745 Humboldt Redwood Creek, at point east from Trinidad. 152 Comment
  HSC23236  Foeniculum vulgare Thomas W. Nelson 1970-10-31 282 Humboldt Beside Hwy 101, 200 m S of the bridge over Eureka Slough Comment
  HSC100627  Fragaria chiloensis Carl C. Marshall Apr 1886 181 Humboldt Vicinity of Humboldt Bay. Comment
  HSC47484  Fragaria chiloensis Sheila Logan 1978-4-7 1 Humboldt Samoa sand dunes, 1/4 mi. N of Coast Guard Station. Comment
  SD39960  Fragaria chiloensis Edith A. Purer 1932-7-27 4159 Humboldt Samoa, sand dunes Comment
  CAS-BOT-BC453517  Fragaria chiloensis John Thomas Howell 1954-4-25 29155 Humboldt Dune Hills, Little River Comment
  HSC59396  Fragaria chiloensis Rick Lundquist 1979-4-25 42 Humboldt .3 mi. S of Samoa on Samoa Blvd. 0 Comment
  HSC61635  Fragaria virginiana Ruby Van Deventer 1959-6-20 Humboldt Humboldt-Del Norte Co. line, Onion Lake 1067 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
  CAS-BOT-BC52732  Frangula californica subsp. californica L. R. Abrams 1918-6-16 7138 Humboldt Willow Creek Comment
  CAS-BOT-BC52736  Frangula californica subsp. californica Carl B. Wolf 1927-8-30 1249 Humboldt At a small creek 3 miles south of Thorn. Comment
  OBI37797  Frangula californica subsp. californica David J. Keil 1983-7-1 17277 Humboldt 2.5 mi NE of Honeydew along Bull Crk Flats Rd Comment
  CAS-BOT-BC59953  Frangula purshiana M. S. Jussel 1931-5-2 s.n. Humboldt Eureka. Comment
  CAS-BOT-BC59959  Frangula purshiana H. E. Parks; S. T. Parks 1935-5-1 5541 Humboldt Spruce Cove, Trinidad. 64 Comment
  HSC30335  Frangula purshiana Dale R. Gradek 1974-4-17 38 Humboldt 0.25 mi N of intersection of Dows Prairie Rd and Grange Rd. Comment
  SEINET200389  Frasera speciosa Joseph P. Tracy 1932-7-20 10731 Humboldt Trinity Summit , 1585 Comment
  HSC38259  Fritillaria affinis Thomas W. Nelson 1976-4-3 2285 Humboldt Hwy 36 at east end of Swain's Flat Comment
  UC1197631  Fritillaria purdyi Mrs. Barnwell 1923-4-28 7488 Humboldt Chalk Mountain; Northern Coast Ranges, Chalk Mountain 762 Comment
  HSC36507  Fritillaria recurva Thomas W. Nelson, Jane P. Nelson, James Nelson 1975-6-14 1884 Humboldt Beside branch off FS 2S08 to Pine Mtn. Comment
  CDA3559  Fumaria capreolata Gordon Leppig, Sylvia Leppig 2000-12-7 1523 Humboldt 7th and I Street just west of Post Office, Arcata. Comment
  CHSC80006  Fumaria officinalis Gordon Leppig; Sylvia Leppig 2000-12-7 1523 Humboldt Arcata, 7th and I Street just west of Post Office, UTM zone 10, 4525N, 408E. 6 Comment
  HSC70928  Galium aparine R. York 1980-5-18 579 Humboldt Near Black Mtn 792 Comment
  UC175731  Galium aparine Joseph P. Tracy 1913-6-20 4235 Humboldt lower foothills of nw slope of mt Northern Coast Ranges, Buck Mountain 762 Comment
  SEINET10876857  Galium californicum subsp. californicum J. Richard Abbott, B. S. Carlsward 1999-7-7 Abbott 13009 Humboldt Leggett; Redwoods River Resort, 75000 Highway 101. Comment
  UC1196105  Galium californicum subsp. californicum Joseph P. Tracy 1925-8-9 7228 Humboldt opposite Miranda; Salmon Creek 91 Comment
  CDA6673  Galium divaricatum T. C. Fuller 1958-6-17 603 -58 Humboldt Wildcat Ridge near Bunker Hill. 0 Comment
  HSC41336  Galium muricatum Brad Klipfel 1974-9-7 564 Humboldt Horse Mtn. Comment
  HSC45640  Galium muricatum Diane L. Reed 1978-5-7 57 Humboldt Fourmile Creek, 4 mi. up Friday Ridge Rd. from Hwy. 299 Comment
  BLMAR206  Galium parisiense Jennifer Anthony-Wheeler 1996-7-9 206 Humboldt Pilots ridge., growing in warm, dry, rocky soil in understroy in mixed hardwood forest 1280 Comment
  HSC67841  Galium parisiense J. P. Smith 1971-10-9 5029 Humboldt Banks and flood plain of the Mad River above the fish hatchery. Comment
  HSC71598  Galium porrigens M. A. Baker 1980-6-26 2410 Humboldt Near Sims Creek 610 Comment
  HSC19817  Galium porrigens var. porrigens B. D. Rogers, William J. Ferlatte 1966-6-15 2092 Humboldt Near Bridgeville Comment
  HSC39162  Galium triflorum D. E. Anderson, J. P. Smith 1971-6-28 - 1241 Humboldt Along Mad River, 2 mi. S of Blue Lake. Comment
  HSC53836  Galium triflorum Griswold, Butler 1979-7-10 6286 Humboldt Near Board Camp Mtn., close to the town of Willow Creek 1372 Comment
  HSC57333  Galium triflorum Overton, Butler 1979-7-26 9951 Humboldt Near Willow Creek, E Fork, close to the town of Willow Creek 1326 Comment
  HSC100644  Galium triflorum Carl C. Marshall May 1886 210 Humboldt Woods everywhere. Comment
  BLMAR268  Gamochaeta ustulata Jennifer Anthony-Wheeler 1999-6-16 268 Humboldt Headwaters Forest Reserve, Disturbed or wasted areas 463 Comment
  CAS-BOT-BC303397  Gamochaeta ustulata L. R. Abrams 1916-7-11 6021 Humboldt Mouth of Grizzly Creek on Van Duzon River Comment
  CAS-BOT-BC303400  Gamochaeta ustulata Ashley C. Browne 1936-6-11 s.n. Humboldt Patrick's Point State Park Comment
  HSC40952  Gamochaeta ustulata Linda M. Barker 1976-7-5 1539 Humboldt 3 mi. W of Arcata. Comment
  UC562618  Gamochaeta ustulata Joseph P. Tracy 1936-5-29 14830 Humboldt 2 mi n Orick (on Bald Hills road) 152 Comment
  UC562620  Gamochaeta ustulata Joseph P. Tracy 1936-5-30 14834 Humboldt sand dunes near Samoa; Northern Coast Region, Humboldt Bay 6 Comment
  CAS-BOT-BC199025  Garrya congdonii H. L. Mason 1926-1-1 2603 Humboldt Blue Lakes Comment
  CAS-BOT-BC188547  Garrya elliptica Doris K. Kildale 1925-12-19 1430 Humboldt Essex -- Lower Mad River Comment
  RSA286356  Garrya elliptica Robert F. Thorne 1974-7-29 45081 Humboldt Samoa Dunes. Comment
  RSA320506  Garrya elliptica M. S. Taylor 1982-10-24 5181 Humboldt Samoa, under bridge, ca. one mile northwest of Eureka. 0 Comment
  UC1541254  Garrya elliptica Harold E. Parks Mar 1933 1403 Humboldt near Trinidad Comment
  CAS-BOT-BC182169  Garrya fremontii Henry M. Pollard 1946-9-1 s.n. Humboldt Near Willow Creek, Orleans region Comment
  HSC98071  Garrya fremontii Cara Witte 2007-7-12 530 Humboldt Ammon Ridge Road. Approximately 2 miles southeast of intersection with 5N10. 1353 Comment
  POM212193  Garrya fremontii Carl B. Wolf 1930-10-24 1762 Humboldt Along the Klamath River one mile above mouth of Slate Creek. 244 Comment
  UC1196892  Garrya fremontii Joseph P. Tracy 1939-8-16 16408 Humboldt Horse Mountain 1432 Comment
  RSA120510  Gastridium phleoides S. S. Tillett 1956-7-6 609 Humboldt South slope along Bar Shanty Road, 5 miles from Orleans. 488 Comment
  SEINET10930370  Gastridium phleoides Rattan RATTAN 11475 Humboldt Hoopa Valley. Comment
  HSC1802  Gaultheria shallon William J. Ferlatte, B. D. Rogers 1966-8-15 3127 Humboldt 5 mi. E of Arcata Comment
  HSC22500  Gaultheria shallon R. D. Modafferi 1965-4-8 29 Humboldt 2.1 mi. N of Trinidad on Trinity St. 305 Comment
  HSC7809  Gaultheria shallon D. A. Shally 1965-5-15 44 Humboldt Arcata, 1/4 mi. NE of HSC campus on Jolly Giant Creek Comment
  UCSB25031  Gaultheria shallon Keefe, Joseph 1967-7-8 Humboldt South edge of Big Lagoon, 20 miles north of Eureka 1 Comment
  UC562364  Gayophytum diffusum subsp. parviflorum Joseph P. Tracy 1933-8-30 13046 Humboldt Grouse Mountain North Coast Ranges 1524 Comment
  JEPS27603  Gayophytum heterozygum Joseph P. Tracy 1932-7-12 10456 Humboldt Brett Hole Klamath Mountains, Trinity Summit (head) 1828 Comment
  UC1196958  Gayophytum humile Joseph P. Tracy 1933-7-26 12918 Humboldt Grouse Mountain 1524 Comment
  UC1222477  Genista monspessulana Joseph P. Tracy 1941-5-10 16905 Humboldt outskirts Eureka 45 Comment
  RSA13517  Gentiana newberryi H. E. Parks 1931-07 1052 Humboldt Bishop Pine Lodge, Trinidad. 76 Comment
  RSA18142  Gentiana oregana Carl B. Wolf 1927-8-22 807 Humboldt 1 mile south of Orick. Comment
  JEPS47021  Gentiana sceptrum Joseph P. Tracy 1927-8-22 8338 Humboldt near High Prairie; Northern Coast Ranges, Bald Mountain 1066 Comment
  RSA183533  Gentiana sceptrum D. E. Anderson 1963-9-6 2810 Humboldt Big Lagoon Sphagnum Bog Comment
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Feb 26 2014
  UC630470  Geranium dissectum H. E. and S. T. Parks Apr 1938 24118 Humboldt Spruce Cove Trinidad 60 Comment
  UC164809  Geranium molle Joseph P. Tracy 1906-5-6 2436 Humboldt near Hydesville; Northern Coast Region 60 Comment
  RSA0029455  Geranium oreganum Volney Rattan 1878-06 s.n. Humboldt North of Redwood Creek. Comment
  RSA75630  Geranium oreganum Albert M. Vollmer, L. Beane 1951-6-6 107 Humboldt On road between Orick and Weitchpec. Comment
  CAS-BOT-BC457029  Geum macrophyllum Elizabeth Parsons Hawver 1915-7-1 s.n. Humboldt Carlotta Comment
  HSC18645  Geum macrophyllum E. W. Styskel 1963-5-19 37 Humboldt 3 mi. SE of Korbel on Snow Camp Rd. 305 Comment
  UC1197929  Gilia capitata subsp. capitata Joseph P. Tracy 1908-6 2751 Humboldt nw slope of Buck Mountain , nw slope Buck Mountain (Northern Coast Ranges) 457 Comment
  BLMAR527  Gilia capitata subsp. pacifica Jennifer Wheeler 2009-6-23 527 Humboldt King range, On King Peak road Comment
  POM193010  Gilia capitata subsp. pacifica H. E. Parks, Joseph P. Tracy 1930-5-25 0793 Humboldt Near Bridgeville. Comment
  CAS-BOT-BC225471  Gilia millefoliata Tom Craig 1941-6-29 s.n. Humboldt Samoa Comment
  HSC16983  Gilia millefoliata J. W. Bosworth 1965-5-14 49 Humboldt 1 mi. N of Fairhaven on Samoa Comment
  HSC90657  Gilia millefoliata Gail Newton 1982-5-5 3541 Humboldt Elk River Wildlife Area, Eureka. Comment
  UC1197911  Gilia millefoliata J. P. Tracy 1905-4-30 2170 Humboldt sand hills of Ocean Beach at Samoa (opp. Eureka); , Ocean Beach at Samoa Comment
  UC146176  Gilia millefoliata Joseph P. Tracy 1905-6-11 2189 Humboldt sandy field at Bucksport Northern Coast Region, region about Humboldt Bay (region about Humboldt Bay) 0 Comment
  POM208979  Githopsis specularioides Lincoln Constance 1934-6-15 819 Humboldt Grasshopper Pk.; Bull Creek watershed, Humboldt Redwood Park. 976 Comment
  HSC37570  Glaux maritima J. D. Ackerman 1975-6-10 453 Humboldt 1 mi. N of Samoa Bridge turnoff from Samoa Blvd., S of Manila Comment
  SD39903  Glehnia littoralis Edith A. Purer 1932-7-27 4151 Humboldt Near Samoa Comment
  POM126119  Glyceria fluitans Joseph P. Tracy 1924-8-3 6749 Humboldt Stone Lagoon Comment
  SBBG29159  Glyceria occidentalis J. P. Tracy 1933-7-20 Humboldt Arcata Bottom 15 Comment
  SEINET10938128  Gnaphalium Mary Susan Taylor 1990-8-22 Taylor 6077 Humboldt Samoa Recreation Area on Samoa Peninsula, Staging Area, Eureka. Coastal scrub in ORV area. Comment
  CAS-BOT-BC302532  Gnaphalium palustre E. C. Johnston 1931-8-1 s.n. Humboldt Klamath River to Arcata Comment
  CAS-BOT-BC302533  Gnaphalium palustre Joseph P. Tracy 1932-7-13 10513 Humboldt Trinity Summit. Open places at Corral Prairie 1584 Comment
  CAS-BOT-BC302538  Gnaphalium palustre H. E. Parks; S. T. Parks 1937-7-1 24026 Humboldt Spruce Cove, Trinidad Comment
  JEPS34040  Gnaphalium palustre W. L. Jepson 1936-8-17 17919 a Humboldt 2 mi s of Field's Landing (near Still's Ranch, marsh) Comment
  SEINET11836330  Gnaphalium palustre H. E. Parks, Parks, S. T. 1937-1 24080 Humboldt Spruce Cove, Trinidad Comment
  CDA20601  Gnaphalium ramosissimum B. Freeman 2005-10-25 PDR 1368985 Humboldt Klamath Ranges; Tully Creek Rd, Weitchpec. 0 Comment
  HSC55277  Goodyera oblongifolia Overton, Butler 1979-8-2 12685 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  HSC36646  Goodyera oblongifolia J. D. Ackerman 1975-9-15 742 Humboldt Arcata, behind Fern Ln. E of Humboldt State University Comment
  UC1212573  Goodyera oblongifolia Francia Chisaki, Helen Sharsmith 1959-8-22 4757 Humboldt Inner North Coast Ranges, Happy Camp, just over line from Trinity County Happy Camp Happy Camp; Inner North Coast Ranges, Happy Camp 914 Comment
  HSC12338  Grindelia hirsutula Steve Dorei 1970-10-26 116 Humboldt Arcata, on South G St. near curve Comment
  HSC79173  Grindelia hirsutula C. K. Geldin-Meyers 1985-8-5 102 Humboldt W of Honeydew along Mattole Rd. 610 Comment
  HSC90398  Grindelia hirsutula Jean Hanson 1980-8-28 115 Humboldt Indian (Gunther) Island. In Humboldt Bay, city of Eureka. Across from the Guard Station. From ca. 20 to ca. 50 ft. from high tide line. Comment
  JEPS25801  Grindelia hirsutula L. R. Heckard 1960-8-31 1220 Humboldt s end Dry Lagoon Beach State Park Comment
  UC1541451  Grindelia hirsutula H. E. and S. T. Parks 1930-9-14 773 Humboldt n shore Big Lagoon Comment
  RSA861  Grindelia stricta var. stricta E. R. Johnson 1928-8-25 1145 Humboldt Eureka Comment
  CAS-BOT-BC302440  Hazardia whitneyi var. discoidea Henry M. Pollard 1946-8-28 s.n. Humboldt Near summit of Orleans Mt. 1828 Comment
  UC630633  Hedera helix Joseph P. Tracy 1939-1-22 16185 Humboldt on Van Duzen R. Blue Slide 91 Comment
  CAS-BOT-BC306612  Helenium bigelovii L. B. Kildale 1930-8-10 10532 Humboldt Snow Camp, head of Redwood Creek Comment
  HSC99503  Helenium bigelovii K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-22 163 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
  UC53952  Helenium bigelovii J. P. Tracy 1901-5-1 1204 Humboldt Humboldt Bay North Coast Ranges, Humboldt Bay 30 Comment
  CAS-BOT-BC306613  Helenium bigelovii Doris K. Kildale 1925-8-15 1173 Humboldt Elk Horn Prairie - Trinity Summit 1539 Comment
  CAS-BOT-BC306618  Helenium bigelovii Henry M. Pollard 1947-8-31 s.n. Humboldt Klamath River bar nr. Woodson's placer mine, Orleans region Comment
  HSC22854  Helenium bigelovii Norman Dennis 1965-6-3 141 Humboldt Big Lagoon County Park, SW corner of Big Lagoon Comment
  SEINET5711015  Helenium bigelovii Lowell E. Urbatsch, Patricia B. Cox; Alan W. Lievens 1988-1 6103 Humboldt From California 299 at Hawkins Bar (in Trinity County), turn onto the road to Denny and travel 1.7 miles down this road to a fork in the road. Thake the lefthand road (leading to "Waterman Ridge, Zeigler Point") and travel 6.7 miles down this road to another fork in the road. Take the right fork (away fromt he road leading to Waterman Ridge and Willow Creek). On this road (7NO4), travel 1.5 miles to another fork; continue on 7NO4 (the left fork) for 6.4 miles. At this point, the collection site is about 100 feet up 7NO4R. Comment
  JEPS109581  Helenium bolanderi Dean W. Taylor 2002-9-12 18341 Humboldt Lake Prairie, remnant of the original bog vegetation on the eastern end of the lake 1097 Comment
  CAS-BOT-BC309414  Helenium puberulum Doris K. Kildale 1928-7-29 5921 Humboldt Mouth of Bear River at Capetown Comment
  CAS-BOT-BC305848  Helminthotheca echioides Doris K. Kildale 1928-7-29 5918 Humboldt Bear River at Capetown Comment
  HSC6065  Helminthotheca echioides D. E. Anderson 1963-10-16 2884 Humboldt Jacoby Creek Rd. Comment
  UC1565811  Hemizonella minima R. Spellenberg 1990-7-9 10228 Humboldt on USFS Rd 1 20.5 mi s Calif. Hwy. 299 and Berry Summit (14 air mi sw of Burnt Ranch, extreme e edge of county); Pilot Ridge 1371 Comment
  UC249845  Hemizonella minima Joseph P. Tracy 1923-6-24 6349 Humboldt High Prairie Northern Coast Ranges, Bald Mountain 1066 Comment
  BLMAR674  Heracleum maximum Jennifer Wheeler 2013-6-7 674 Humboldt King range, Mattole Beach parking lot 6 Comment
  HSC56088  Heracleum maximum G. L. Clifton, Terry Griswold 1979-7-31 11777 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa. 1845 Comment
  HSC79539  Heracleum maximum Kenneth Clark 1979-7-1 460 Humboldt Deadman's Gulch 11 Comment
  RSA453722  Heracleum maximum B. C. Templeton 1964-6-13 10181 Humboldt Along old 101 Highway to Trinidad Comment
  UC1223123  Hesperevax acaulis var. robustior Joseph P. Tracy 1948-5-31 17983 Humboldt 1/2 mi ne Garberville 152 Comment
  RSA178554  Hesperolinon micranthum Joseph P. Tracy 1950-7-6 18994 Humboldt Buck Mountain: High meadow on west side, 3 miles south of Burr Valley, on the Albee Road. 1159 Comment
  UC162880  Hesperolinon micranthum Joseph P. Tracy 1911-7-4 3290 Humboldt near Willow Creek (hillslopes at w side of river); Northern Coast Ranges, Trinity River 243 Comment
  UC1541522  Heterocodon rariflorum H. E. Parks and J. P. Tracy 1934-6-27 11084 Humboldt Grouse Mountain Comment
  SEINET10460654  Heterocodon rariflorum Tracy TRACY 2831 Humboldt BUCK MTN. Comment
  SEINET10460656  Heterocodon rariflorum Tracy TRACY 2199 Humboldt EUREKA Comment
  SEINET10460663  Heterocodon rariflorum Tracy TRACY 3329 Humboldt WILLOW CR. Comment
  SEINET10460687  Heterocodon rariflorum Lincoln Constance Constance 915 Humboldt GRASSHOPPER PEAK 3000 Comment
  SEINET10972515  Heterocodon rariflorum Harold E. Parks, Joseph P. Tracy Parks 11084 Humboldt GROUSE MTN Comment
  CAS-BOT-BC143654  Heteromeles arbutifolia Doris K. Kildale 1927-12-1 4214 Humboldt Klamath River at Orleans Comment
  HSC5311  Heterotheca oregona Paul Shields Aug 1955 Humboldt 1 mi. N of Weott Comment
  UC581759  Heterotheca oregona var. oregona Joseph P. Tracy 1933-10-15 13097 Humboldt Miranda, along South Fork of Eel River South Fork of Eel River 121 Comment
  HSC100650  Heuchera micrantha Carl C. Marshall Jun 1887 407 Humboldt Garberville. Comment
  HSC32931  Heuchera micrantha Thomas W. Nelson, James Nelson 1973-5-28 951 Humboldt McKeown Ranch N of Dinsmore Comment
  CAS-BOT-BC312391  Hieracium albiflorum Doris K. Kildale 1928-6-24 7078 Humboldt Redwood Creek at Berry's 289 Comment
  HSC81659  Hieracium albiflorum Thomas W. Nelson, Jane P. Nelson 1980-7-13 6066 Humboldt Along the road from Dinsmore to Anderson Ford-McKeown Ranch Rd. 762 Comment
  HSC98116  Hieracium albiflorum Cara Witte 2007-6-27 371 Humboldt Near Grouse Mountain. Along Forest Service Road 4N32. Near intersection with 4N32B 1516 Comment
  HSC57619  Hieracium greenei G. L. Clifton, Griswold 1979-7-25 10744 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1814 Comment
  JEPS72935  Hierochloe occidentalis Lincoln Constance 1934-5-31 749 Humboldt along n side Bull Cr. (from w boundary of Park to Grasshopper Pk.(Squaw Cr.) rd,); South Fork Eel River, Bull Cr. flat Comment
  UC526828  Hierochloe occidentalis Joseph P. Tracy 1926-2-28 7382 Humboldt Willow Creek Canyon Northern Coast Ranges 304 Comment
  UC1196930  Hippuris vulgaris Joseph P. Tracy 1934-7-2 13284 Humboldt mouth of Little R. 1 Comment
  UC668291  Hippuris vulgaris Joseph P. Tracy 1938-8-21 16130 Humboldt along coast in front of South End of Stone Lagoon (Dry Lagoon); Dry Lagoon 3 Comment
  UCD115146  Hirschfeldia incana Joseph P. Tracy 1931-5-21 9434 Humboldt Eel River, Alton to Fortuna. 15 Comment
  CAS-BOT-BC280735  Holcus lanatus L. R. Abrams 1916-7-11 6018 Humboldt Mouth of Grizzly Creek on Van Duzon [Duzen] River Comment
  POM291100  Holcus lanatus Lyman Benson 1929-7-14 1797 Humboldt Weott Ranger Station, South Fork Eel River. Comment
  POM319520  Holcus lanatus Patricia Wilder 1968-8-21 4368 Humboldt Big Lagoon Park, just west of U.S. 101 15 Comment
  CAS-BOT-BC149902  Holodiscus discolor Doris K. Kildale 1927-7-17 3755 Humboldt Bug Creek 792 Comment
  CAS-BOT-BC149903  Holodiscus discolor L. R. Abrams 1918-6-16 7147 Humboldt Willow Creek Comment
  CAS-BOT-BC149908  Holodiscus discolor Clarence R. Quick 1959-7-24 59 -26 Humboldt Bee Mt., ca. 12 miles southwest of Orleans Comment
  HSC99588  Holodiscus discolor K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-8-10 253 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  SD42284  Holodiscus discolor Carl B. Wolf 1937-9-9 9310 Humboldt North coast Range, Wildcat Ridge, 6 3/10 mi. So. of Ferndale 305 Comment
  SDSU9079  Holodiscus discolor D. F. Howe 1961-8-1 3115 Humboldt 3.3 miles north of Trinidad on #101. Comment
  UC526788  Hordeum brachyantherum subsp. brachyantherum Joseph P. Tracy 1927-6-26 8208 Humboldt Stone lagoon 6 Comment
  RSA87057  Hordeum jubatum Joseph P. Tracy 1927-7-16 8249 Humboldt About Humboldt Bay, Mouth of Elk River. 3 Comment
  HSC26776  Hordeum marinum subsp. gussoneanum Thomas W. Nelson 1971-5-31 466 Humboldt 915 Comment
  HSC99121  Hordeum marinum subsp. gussoneanum Cara Witte 2007-6-4 201 Humboldt Cold Spring. 0.5 mile S of Titlow Hill. 1386 Comment
  JEPS72937  Hordeum marinum subsp. gussoneanum Lincoln Constance 1934-5-29 722 Humboldt Upper Look Prairie Bull Creek Region, South Fork Eel River, Upper Look Prairie (South Fork Eel River, Bull Creek Region) 365 Comment
  UCD85874  Hordeum marinum subsp. gussoneanum P. B. Kennedy 1925-8-29 s.n. Humboldt Eureka. Comment
  HSC104047  Hordeum murinum subsp. murinum Kyle Brown Apr 2015 31 Humboldt Along trail at Ma-le'l Dunes 3 Comment
  CAS-BOT-BC536626  Horkelia californica Milo S. Baker 1931-7-17 5409 Humboldt A few mile south of Eureka along Redwood Highway Comment
  SEINET200739  Horkelia californica subsp. californica J. P. Tracy 1906-6-24 2503 Humboldt Region about Humboldt Bay S slope of Humboldt Hill 0 Comment
  HSC57677  Hydrophyllum occidentale G. L. Clifton, Griswold 1979-7-25 10877 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1784 Comment
  UC1239762  Hydrophyllum occidentale Joseph P. Tracy 1908-6 2633 Humboldt Kneeland Prairie; Northern Coast Ranges 762 Comment
  UC562599  Hydrophyllum occidentale Joseph P. Tracy 1933-7-11 12700 Humboldt Grouse Mountain; North Coast Ranges, Trinity Summit 1524 Comment
  HSC13822  Hypericum anagalloides D. E. Anderson 1961-9-9 1801 Humboldt Big Lagoon County Park Comment
  UC108651  Hypericum concinnum unknown 1148 Humboldt Eel R. 548 Comment
Read comments
Feb 5 2011
  RSA8307  Hypericum formosum var. scouleri I. L. Wiggins 1932-7-18 5886 Humboldt Boggy meadow between Arcata and Bayside Comment
  SEINET6178743  Hypericum perforatum James P. Smith 1973-5-26 6830 Humboldt Scotia Bluffs along the Eel River near Rio Dell.; 0 Comment
  HSC26376  Hypochaeris radicata T. O. Osborne 1970-9-16 34 Humboldt Prisoner Rock, Trinidad Comment
  CAS-BOT-BC206840  Iliamna latibracteata Joseph P. Tracy 1938-8-14 16104 Humboldt Willow Creek Canyon, along Trinity Highway 762 Comment
  JEPS8445  Iris Rimo Bacigalupi with J. P. Tracy, L. Constance, R. Moran, R. L. Rodriguez and S. Carlquist 1951-6-14 3414 Humboldt ridge between Mad River and Redwood Creek (Bald Mountain ridge) (in meadow about Snow Camp); Snow Camp 1432 Comment
  RSA366776  Iris Anonymous 1941-6-25 s.n. Humboldt Between Garberville [Garbervill Quad] and Pepperwood [Redcrest Quad] Comment
  RSA67626  Iris Philip A. Munz 1951-7-15 16546 Humboldt dry slopes in woods, about 3 miles northeast of Willow Creek Comment
  HSC91876  Iris douglasiana E. Mackey 1986-5-13 Humboldt Patrick's Point State Park near Ceremonial Rock Comment
  UC1565799  Iris douglasiana R. Spellenberg 1990-7-10 10240 Humboldt 11 mi s Berry Summit (on Calif. Hwy. 299) on U.S.F.S. 1 (11 air mi e of Burnt Ranch, extreme e edge of Humboldt County) 1432 Comment
  UC4280  Iris douglasiana Harley P. Chandler May 1901 1262 Humboldt Redwood Belt; North Coast Ranges 457 Comment
  UC14921  Iris douglasiana Joseph Burtt Davy and Walter C. Blasdale 1899-6-11 5441 Humboldt Hubbard's Station to Elk Prairie; North Coast Ranges Comment
  UC1196376  Iris macrosiphon Joseph P. Tracy 1935-7-14 14067 Humboldt Grouse Mountain 1524 Comment
  JEPS79908  Iris macrosiphon Joseph P. Tracy 1941-3-23 16808 Humboldt 3 mi w Bridgeport (near e margin of redwood belt through s Humboldt County) 198 Comment
  HSC101964  Iris tenuissima M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-12 859 Humboldt Patterson Meadows 1566 Comment
  UC14930  Iris tenuissima Mrs. M. H. Manning Apr 1902 Humboldt near Hupa Comment
  UC1223545  Isoetes howellii Joseph P. Tracy with Mr. Murphy 1951-6-26 19582 Humboldt upper of Twin Lakes Comment
  CAS-BOT-BC112457  Isolepis cernua Doris K. Kildale 1927-6-25 3556 Humboldt Shelter Cove, coastal. Comment
  RSA170275  Isolepis setacea Joseph P. Tracy 1917-6-17 4817 Humboldt Salmon Creek Valley, around Humboldt Bay. 30 Comment
  CAS-BOT-BC340228  Jaumea carnosa Marcus E. Jones 1931-7-16 2911 Humboldt Arcata Comment
  HSC38446  Jaumea carnosa J. P. Smith 1976-7-3 8935 Humboldt Manila, Samoa Peninsula Comment
  UC1152088  Juncus articulatus Joseph P. Tracy 1927-8-7 8310 Humboldt Willow Creek Trinity River Valley 152 Comment
  HSC85848  Juncus balticus subsp. ater L. P. Janeway 1983-9-24 699 Humboldt S side of Big Lagoon at county camp ground, 10-30 ft. from water line 3 Comment
  HSC38832  Juncus bolanderi R. Sutherland 1976-8-13 813876 Humboldt Whittemaore Grove at edge of forest 213 Comment
  HSC14013  Juncus breweri S. J. Moore 1965-5-3 6 Humboldt Gold Beach near waters edge by lake Comment
  UC183782  Juncus covillei var. obtusatus Joseph P. Tracy 1908-7-14 2871 Humboldt opposite Buck Mountain (Dinsmore's Ranch); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  BLMAR316  Juncus effusus subsp. pacificus Jennifer Anthony-Wheeler 2002-8-6 316 Humboldt King range, grwong at mattole beach behind dune 6 Comment
  UC212986  Juncus ensifolius Joseph P. Tracy 1919-9-22 5276 Humboldt Trinity Summit Northern Coast Ranges 1828 Comment
  UC1152095  Juncus ensifolius Joseph P. Tracy 1937-7-25 15563 Humboldt 6 mi ne Hawkins Bar; Trinity Summit Range, Happy Camp Mountain 1280 Comment
  UC1152097  Juncus ensifolius Joseph P. Tracy 1938-7-12 16053 Humboldt w end Table Bluff Comment
  HSC99545  Juncus exiguus K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-8-10 210 Humboldt Near North Trinity Mtn, 11. 5 mi E of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  UC167841  Juncus falcatus subsp. sitchensis Schmidt Humboldt Humboldt Bay Comment
  RSA168867  Juncus hesperius Joseph P. Tracy 1938-6-15 15938 Humboldt Carlotta. 61 Comment
  HSC45545  Juncus lescurii J. P. Smith 1971-10-6 4975 Humboldt End of Murray Rd. in McKinleyville. Comment
  HSC44561  Juncus mertensianus Brad Klipfel 1973-7-15 180 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  UC184752  Juncus occidentalis Joseph P. Tracy 1908-7-9 2830 Humboldt near Buck Mountain summit; Northern Coast Ranges 1219 Comment
  HSC102129  Juncus parryi M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 1033 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  SDSU11823  Juncus phaeocephalus D. F. Howe 1961-8-1 3111 Humboldt 9 miles noth of Arcata on #101 Comment
  UC183779  Juncus saximontanus Joseph P. Tracy 1912-7-31 3911 Humboldt near Buck Mountain summit; Northern Coast Ranges 1219 Comment
  UC184180  Juncus tenuis Joseph P. Tracy 1912-7 3749 Humboldt Eureka Northern Coast Region, Lucas Prairie 0 Comment
  HSC74667  Keckiella corymbosa Gail Newton 1981-8-7 2429 Humboldt Near Bug Creek Butte 1244 Comment
  RSA44300  Keckiella corymbosa H. M. Pollard 1946-8-10 s.n. Humboldt Klamath River flood plain near Wilson Creek. Comment
  JEPS24829  Kickxia spuria H. G. Baker, A. Nelson, J. Surenson, A. Weston 1960-12-29 Humboldt near Nelson Grove; Humboldt Redwoods State Park Comment
  HSC32341  Koeleria macrantha D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5640 Humboldt Senteney Rock, a large barren Franciscan Rock along Swayback Ridge. Comment
  CAS-BOT-BC340409  Lactuca biennis Henry M. Pollard 1947-8-21 s.n. Humboldt Near Ferrian Ranch, Orleans region Comment
  UCD133531  Lactuca saligna Joseph P. Tracy 1946-8-25 17650 Humboldt Eel River, Alton to Fortuna. 15 Comment
  UC1239535  Lactuca serriola Joseph P. Tracy 1934-8-14 13577 Humboldt Holmes Flat North Coast Ranges, Holmes Flat 60 Comment
  UC577364  Lamium amplexicaule Joseph P. Tracy 1923-6-10 6261 Humboldt Eureka; Northern Coast Ranges 0 Comment
  CAS-BOT-BC337995  Lasthenia californica Doris K. Kildale 1928-5-15 6031 Humboldt Bug Creek, Chaparral Mountain 1524 Comment
  UCD106195  Lathyrus annuus W. A. Williams 1951-6-14 s.n. Humboldt 5 miles S of Capetown. Comment
  JEPS55332  Lathyrus brownii W. L. Jepson 1932-7-30 16455 Humboldt bank of Bull Creek Bull Creek 106 Comment
  UC709418  Lathyrus lanszwertii var. tracyi Joseph P. Tracy 1941-3-26 16844 Humboldt w of mouth of South Fork of Trinity River 304 Comment
  UC709420  Lathyrus lanszwertii var. tracyi Joseph P. Tracy 1941-3-26 16843 Humboldt w of mouth of South Fork of Trinity River 304 Comment
  HSC26882  Lathyrus latifolius Clifton Raymond Chesbrough 1973-6-19 89 Humboldt 0.5 mi. S of Trinidad along the coast Comment
  UCR122373  Lathyrus littoralis George K. Helmkamp, E. A. Helmkamp 2001-7-8 7014 Humboldt North Coast, Samoa Peninsula, 2.6 miles south of CA Hwy 255 bridge across Humboldt Bay 15 Comment
  UCSB15805  Lathyrus littoralis Breedlove, Dennis 1962-6-7 Humboldt 1.5 miles south of Samoa on peninsula on western side of Humboldt Bay Comment
  UC160918  Lathyrus littoralis Joseph P. Tracy 1909-7-18 3022 Humboldt Ocean Beach Northern Coast Region, Humboldt Bay Comment
  HSC49176  Lathyrus nevadensis var. nevadensis J. O. Sawyer 1977-4-24 2849 Humboldt 2 mi. E of State Route 96 on road to Fish Lake (13N01) Comment
  HSC64184  Lathyrus vestitus var. ochropetalus J. O. Sawyer, M. A. Ericksen 1979-6-23 3391 Humboldt Slopes below Mill Creek Lakes 1585 Comment
  HSC76516  Lathyrus vestitus var. ochropetalus Denis Kearns 1981-7-8 163 Humboldt Near Bluff Creek 622 Comment
  UCD133892  Layia carnosa Linda M. Barker 1976-4-13 1377 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  HSC59501  Lemna minor M. A. Ericksen 1979-5-29 308 Humboldt Northern-most of Clam Beach ponds Comment
  UCD133973  Leontodon saxatilis Linda M. Barker 1976-6-1 1562 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  HSC98043  Lepidium campestre Cara Witte 2007-7-17 538 Humboldt Along National Forest 1. 1 mile south of Brays Opening. 1447 Comment
  UC1199164  Lepidium nitidum Joseph P. Tracy 1933-5-20 12225 Humboldt 3 mi s point of Cape Mendocino; Northern Coast Ranges, Cape Mendocino 3 Comment
  UC161491  Lepidium strictum Joseph P. Tracy 1911-7-1 3276 Humboldt near Hydesville (at Carlotta); Northern Coast Region, Carlotta 60 Comment
  UCD115838  Lepidium strictum Joseph P. Tracy 1946-5-30 17540 Humboldt Vicinity of Carlotta. 30 Comment
  HSC17077  Leptosiphon androsaceus J. P. Tracy, H. E. Parks 1930-5-25 794 Humboldt Near Bridgeville 457 Comment
  HSC45057  Leptosiphon androsaceus R. Sutherland 1978-4-24 9 .24478 Humboldt 323 Comment
  HSC45590  Leptosiphon androsaceus Diane L. Reed 1978-5-27 126 Humboldt Horse Mtn., on Titlow Hill Rd. 1.5 mi. from junction with Hwy. 299 Comment
  UC673120  Leptosiphon latisectus Joseph P. Tracy 1940-5-17 16553 Humboldt Larrabee Valley 731 Comment
  UCD118969  Leptosiphon nuttallii P. B. Kennedy 1923-8-3 s.n. Humboldt 7 miles from Bluff Creek. Klamath River to Eureka. Comment
  BLMAR147  Leucanthemum vulgare Donald Hazlett 1994-6-7 147 Humboldt King range, near horse Mt. Ridge rd 670 Comment
  HSC91923  Leucanthemum vulgare E. Mackey 1986-7-21 Humboldt Patrick's Point State Park near Ceremonial Rock. Comment
  SEINET4889187 Image available Leucanthemum vulgare H. E. Parks, S. T. Parks August 1943 24257 Humboldt Spruce Cove, Trinidad 60 Comment
  CAS-BOT-BC283512  Leymus X vancouverensis Joseph P. Tracy 1927-6-26 8214 Humboldt Stone Lagoon 6 Comment
  CAS-BOT-BC283513  Leymus X vancouverensis Joseph P. Tracy 1930-7-21 8894 Humboldt Cape Mendocino, near ocean shore S of point of the cape 30 Comment
  RSA183570  Leymus mollis subsp. mollis R. I. Bonn 1965-3-12 6 Humboldt four miles west of Arcata on Lanphere Rd. Comment
  RSA623752  Leymus mollis subsp. mollis T. Gertrude Williamson 1924-7-12 251 Humboldt Between Trinidad and Arcata Comment
  RSA10128  Leymus triticoides Joseph P. Tracy 1929-6-3 8601 Humboldt Trinity River Valley, at Willow Creek 152 Comment
  UC1197175  Ligusticum apiifolium J. P. Tracy 1902-7-4 1756 Humboldt immediate vicinity Eureka 0 Comment
  UC1541380  Ligusticum apiifolium Harold E. Parks May 1933 4311 Humboldt Trinidad, Spruce Cove Comment
  HSC74226  Ligusticum californicum M. A. Baker 1980-7-19 3021 Humboldt Near Bret Hole. 1814 Comment
  UC1334273  Lilium kelloggii Albert M. Vollmer and Ira L. Wiggins 1940-7-4 6 Humboldt 15 mi. w. Weitchpec (on burned-over ridge on Orick-Weitchpec rd.) 944 Comment
  CAS-BOT-BC130682  Lilium occidentale Doris K. Kildale 1925-6-25 751 Humboldt Eden Tract - Eureka, Pine's Pasture Comment
  CAS-BOT-BC130688  Lilium occidentale A. M. Vollmer; L. Beane 1951-7-1 s.n. Humboldt Table Bluff, near Eureka Comment
  SEINET3992036  Lilium occidentale Bassett Maguire, Ruth Maguire, C. B. Maguire 1934-1 Humboldt Comment
  UC1198238  Lilium occidentale Joseph P. Tracy 1912-7-25 3811 Humboldt Kneeland Prairie Northern Coast Ranges (near Skinner's Mill) 762 Comment
  UC1198244  Lilium occidentale Joseph P. Tracy 1927-7-18 8290 Humboldt Table Bluff 91 Comment
  CAS-BOT-BC130683  Lilium occidentale Dr. Doris Niles; Thomas Nelson 1974-6-20 s.n. Humboldt On the Wiggens ranch just west of the garbage dump Comment
  UC303044  Lilium pardalinum Joseph P. Tracy 1926-6-27 7668 Humboldt Horse Mountain; Northern Coast Ranges 1463 Comment
  CAS-BOT-BC132967  Lilium rubescens Alice Eastwood; John Thomas Howell 1937-6-22 4730 Humboldt Near Alder Point Comment
  HSC72679  Lilium rubescens J. P. Smith 1977-7-3 9243 Humboldt Road to Onion Mtn., 1/4 mile from its junction with USFS Rd. 10N41 762 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
  UC1198227  Lilium washingtonianum subsp. purpurascens Joseph P. Tracy 1946-6-23 17593 Humboldt Kneeland Prairie; near Dan McBride place 762 Comment
  UC1198250  Lilium washingtonianum subsp. purpurascens Joseph P. Tracy 1913-7-20 4366 Humboldt ridge between Redwood Creek and Willow Creek (on Willow Creek road); Northern Coast Ranges 914 Comment
  UC1197413  Limnanthes douglasii Joseph P. Tracy 1922-5-29 6064 Humboldt Head of South Yager Creek Northern Coast Ranges 762 Comment
  HSC100568  Limnanthes douglasii Carl C. Marshall Jun 1887 68 Humboldt Damp soils throughout Humboldt. Comment
  UC275336  Limnanthes douglasii Joseph P. Tracy 1924-5-4 6667 Humboldt near Bridgeville; Northern Coast Ranges 304 Comment
  UC35157  Limonium californicum Chesnut and Drew 1888-8-11 Humboldt Eureka; marsh Comment
  UCD98509  Limonium californicum Malcolm A. Nobs; S. Galen Smith 1949-8-3 1203 Humboldt Salt marshes bordering Humboldt Bay, about 2 miles north of Eureka. Comment
  SEINET7249786 Image available Limonium californicum C. C. Harris, S. K. Harris 1939-1 973 Humboldt South shore of Humboldt Bay Comment
  JEPS58165  Linanthus androsaceus Lincoln Constance 1934-5-29 723 Humboldt Upper Look Prairie South Fork Eel River, Bull Creek Region 365 Comment
  UC1198591  Linanthus androsaceus Joseph P. Tracy 1923-6-3 6252 Humboldt Kneeland Prairie 762 Comment
  UC146168  Linanthus androsaceus Joseph P. Tracy 1908-6 2746 Humboldt nw slope Buck Mountain; Northern Coast Ranges 457 Comment
  UC60871  Linanthus bicolor Harley P. Chandler Jun 1901 1417 Humboldt Klamath River North Coast Ranges 243 Comment
  UC908238  Linanthus ciliatus Joseph P. Tracy 12923 Humboldt s slope Grouse Mountain (towards Grouse Creek Basin); North Coast Ranges 1219 Comment
  CDA6371  Linaria vulgaris E. C. Whitney 1963-9-5 Humboldt Fortuna. 0 Comment
  RSA0087552  Linnaea borealis subsp. longiflora Mrs. M. H. Manning 1901-06 108 Humboldt Trinity Summit. Comment
  SEINET10634291  Linum Daniel K. Harder 1994-10-4 Harder 2493 Humboldt Ca. 6 km W/SW of Fort Seward along Fort Seward Road along middle ridge (near powerlines), collections from rock outcrops in cattle pasture with islands of redwoods and Umbellaria; near small spring in hillside. 570 Comment
  HSC97453  Linum bienne Cara Witte 2007-6-7 228 Humboldt White Oak Opening. Along Kinsey Ridge. 1238 Comment
  CAS-BOT-BC36147  Lithocarpus densiflorus var. densiflorus Doris K. Kildale 1926-7-25 2438 Humboldt Briceland Bridge. 1/2 mile west of Gaberville 114 Comment
  CAS-BOT-BC36149  Lithocarpus densiflorus var. densiflorus Doris K. Kildale 1928-5-27 5947 Humboldt Kneeland Prairie Comment
  RSA273403  Lithocarpus densiflorus var. densiflorus Thomas W. Nelson, Jane Nelson 1976-2-21 2247 Humboldt Beside the Hoopa-Redwood Valley Rd. ca. 5 mi. west of Hoopa. Comment
  CAS-BOT-BC36105  Lithocarpus densiflorus var. densiflorus Nancy Ryan Zabriskie; Walter Zabriskie 1973-6-10 676 Humboldt Pearch Creek campground by the Klamath River 137 Comment
  RSA55100  Lithocarpus densiflorus var. densiflorus O. J. Murie 1934-11-30 2532 Humboldt South of Gerberville. Comment
  HSC97506  Lithophragma parviflorum var. parviflorum C. Witte 2007-5-22 80 Humboldt Cold Spring. 1/2 mile south of Titlow Hill. 1392 Comment
  UC1225758  Lobularia maritima Joseph P. Tracy 1947-7-8 17760 Humboldt Eureka 30 Comment
  UC50505  Lolium multiflorum Joseph Burtt Davy and Walter C. Blasdale 1899-7-30 6212 Humboldt Russ Ranch; North-Western California 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
  RSA254739  Lomatium californicum Thomas W. Nelson, James Nelson 1973-5-28 954 Humboldt McKeown Ranch north of Dinsmore. Comment
  SEINET8465382 Image available Lomatium dissectum M. A. Baker 1980-6-8 1906 Humboldt Ammon Ridge Comment
  JEPS16236  Lomatium dissectum var. dissectum Joseph P. Tracy 1913-6-20 4237 Humboldt lower foothhills of Buck Mt. (on its n.w. slope); Northern Coast Ranges, Buck Mt. 762 Comment
  UC642327  Lomatium dissectum var. dissectum Joseph P. Tracy 1928-6-24 8460 Humboldt Valley of S. Yager Creek 762 Comment
  HSC98968  Lomatium dissectum var. multifidum C. Witte 2007-5-22 76 Humboldt Cold Spring. 1/2 mile south of Titlow Hill. 1422 Comment
  HSC55837  Lomatium macrocarpum G. L. Clifton, Terry Griswold 1979-7-25 10774 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1814 Comment
  HSC56003  Lomatium macrocarpum Overton, Butler 1979-7-31 11454 Humboldt Near Water Dog Lakes, close to the town of Hoopa 1830 Comment
  HSC97232  Lomatium macrocarpum Kiera Freeman, Heather J. Perry 2007-6-4 1 Humboldt Cold Springs Camp, 8.0 mi. S of Hwy. 299 on NF1 1372 Comment
  UC1197146  Lomatium triternatum var. triternatum Joseph P. Tracy 1930-7-10 8875 Humboldt Northern Coast Ranges, Brannan Mt. 1066 Comment
  UC906644  Lomatium triternatum var. triternatum Joseph P. Tracy 1942-6-23 17228 Humboldt 1 mi. w. Box Camp (Trinity Summit); Trinity Summit 1219 Comment
  UC1347206  Lomatium utriculatum Alice Eastwood and John Thomas Howell 1937-6-23 4767 Humboldt Dinsmore's Comment
  HSC58307  Lonicera conjugialis Overton, Butler 1979-8-2 12589 Humboldt Near Bret Hole, close to the town of Hoopa 1554 Comment
  HSC99456  Lonicera conjugialis K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-7 108 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
  HSC65073  Lonicera hispidula var. vacillans J. P. Smith, Steve Selva 1970-6-14 3854 Humboldt Along Hwy. 96 at Whitmore Creek 152 Comment
  RSA65775  Lonicera hispidula var. vacillans E. K. Balls, P. C. Everett 1953-10-11 18625 Humboldt 0.1 mi. N of Humbolt-Mendecino Co. line, Hwy 101. 168 Comment
  UC1239554  Lonicera hispidula var. vacillans Joseph P. Tracy 1911-7-9 3469 Humboldt near mouth Willow Creek; Northern Coast Ranges, Trinity River 152 Comment
  SD51253  Lonicera involucrata Darley F. Howe 1961-8-1 3104 Humboldt 6.0 miles north of Trinidad on Highway 101. Comment
  CAS-BOT-BC241490  Lonicera involucrata var. ledebourii Alice Eastwood 1923-8-14 12306 Humboldt Samoa Comment
  HSC96530  Lonicera involucrata var. ledebourii Gordon Leppig 1998-5-11 758 Humboldt Big Lagoon County Park. 3 Comment
  RSA89763  Lonicera ledebourii P. A. Munz 1954-7-25 19879 Humboldt behind dunes. Comment
  UC162846  Lotus aboriginus J. P. Tracy 1905-9-3 2390 Humboldt immedite vicinity Eureka 0 Comment
  HSC98254  Lotus corniculatus Norman H. Moe 1962-5-19 Humboldt Lanphere's Place Comment
  HSC97945  Lotus crassifolius var. crassifolius Cara Witte 2007-6-26 357 Humboldt Horse Mountain Botanical Area. Forest Service Road 6N36A. 1348 Comment
  UC726594  Lotus denticulatus A. A. Heller 1923-7-10 13791 Humboldt between Scotia and Pepperwood; Eel River Comment
  UC1046517  Lotus denticulatus R. Bacigalupi, L. Constance, R. Moran, R. L. Rodriguez, and S. Carlquist 1951-6-13 3405 Humboldt 4 mi w bridge crossing the Van Duzen River (along State Highway 36, Dinsmore); Dinsmore Comment
  UC495724  Lotus humistratus Joseph P. Tracy 1929-4-28 8547 Humboldt Willow Creek Northern Coast Ranges, Trinity River Valley 152 Comment
  RSA20787  Lotus oblongifolius var. nevadensis Carl B. Wolf 1937-8-13 9252 Humboldt North Coast Range 11 mi. E. of Hoopa Valley on New Road towards Trinity Summit. 1524 Comment
  SEINET3694458 Image available Lotus pinnatus Joseph P. Tracy 1937-7-19 15461 Humboldt Larrabee Valley 732 Comment
  HSC43849  Lotus unifoliolatus var. unifoliolatus Maralyn O'Meara 1974-7-17 558 Humboldt Kneeland Comment
  UC1197303  Lotus wrangelianus Joseph P. Tracy 1927-6-18 8178 Humboldt on road from ocean towards Petrolia; Northern Coast Ranges, Cape Mendocino 30 Comment
  UC1197306  Lotus wrangelianus Joseph P. Tracy 1931-6-14 9578 Humboldt Alton, along Van Duzen River North Coast Ranges, Van Duzen River 30 Comment
  UC162850  Lotus wrangelianus Joseph P. Tracy 1906-7-4 2521 Humboldt near Hydesville (on gravel bar of Yager Creek); Northern Coast Region, Yager Creek 60 Comment
  JEPS85681  Lupinus Joseph P. Tracy Jul 16 1930-Jul 19 1930 9059 Humboldt along summit near Blake lookout, South Fork Mountain (South Fork Mountain); Northern Coast Ranges, South Fork Mountain 1737 Comment
  HSC36638  Lupinus albifrons var. flumineus Thomas W. Nelson, James Nelson, Jane P. Nelson 1975-6-14 1904 Humboldt Beside Rd. 2S08 to Pine Mtn. 1555 Comment
  HSC50953  Lupinus andersonii G. L. Clifton, Overton 1979-6-3 3777 Humboldt Near Pine Mtn., close to the town of Forest Glen 1495 Comment
  HSC14779  Lupinus arboreus Francis Winter 1960-5-6 Humboldt Little River State Park, N of Arcata Comment
  HSC49089  Lupinus arboreus Patricia Shesgreen 1978-8-12 135 Humboldt 1/2 mi. E of Samoa Cookhouse on Vance Ave., Samoa. Comment
  RSA407035  Lupinus arboreus var. arboreus M. B. Dunkle 1936-8-18 4820 Humboldt Moonstone Beach. Comment
  UC1776379  Lupinus latifolius var. latifolius R. Spellenberg 1990-7-9 Humboldt Extreme E edge county, 14 air mi. SW of Burnt Ranch, 14 mi S of Calif Hwy 299 and Berry Summit on USFS Rd. 1, on Pilot Ridge. 1371 Comment
  UC161545  Lupinus latifolius var. latifolius Joseph P. Tracy 1911-7-7 3417 Humboldt Viz. Ridge n of Willow Creek Brannan Mountain (between Willow and Campbell Creeks, near the summit); Northern Coast Ranges, Brannan Mt, btw Willow and Campbell C 1219 Comment
  UC176599  Lupinus latifolius var. latifolius Joseph P. Tracy 1913-6-20 4240 Humboldt lower foothills on its nw slope Buck Mountain; Northern Coast Ranges, lower foothills Buck Mountain 762 Comment
  UC15962  Lupinus lepidus var. sellulus Harley P. Chandler Jun 1901 1498 Humboldt Klamath River Comment
  HSC35702  Lupinus luteolus Thomas W. Nelson, B. Reinhardt 1975-7-30 2118 Humboldt E of Pilot Rock Comment
  UCD108608  Lupinus luteolus R. Tofsrud 1951-1 s.n. Humboldt Exact location unknown. Comment
  HSC79484  Lupinus rivularis Kenneth Clark 1980-3-1 503 Humboldt Dead Man's Gulch, Shelter Cove 21 Comment
  HSC56946  Luzula comosa Overton, Butler 1979-7-23 9436 Humboldt Near Horse Mtn., close to the town of Willow Creek 1478 Comment
  RSA168865  Luzula comosa Joseph P. Tracy 1951-6-26 19546 Humboldt Snow Camp Meadow. Comment
  CAS-BOT-BC436735  Luzula comosa var. laxa Doris Kildale Gillespie 1931-6-7 10661 Humboldt South Fork Mt., Blake Lookout 1726 Comment
  CAS-BOT-BC436736  Luzula comosa var. laxa R. K. Gierisch; D. H. Esplin 1969-7-1 3539 Humboldt Six Rivers area: Grouse Mt. 1584 Comment
  UCR265767  Luzula macrantha Peter F. Zika 2011-7-3 25500 Humboldt Outer North Coast Ranges, Titlow Hill Road, near junction with Forest Road 6N36, 1 air mi south of Horse Mountain 1410 Comment
  UC1103680  Luzula parviflora Joseph P. Tracy 1925-6-7 7056 Humboldt Willow Creek Canyon Northern Coast Ranges, Willow Creek Canyon 609 Comment
  HSC102059  Luzula subcongesta M. R. Mesler, Robin Bencie, K. A. Wayman 2011-7-12 1165 Humboldt Patterson Meadows 1566 Comment
  UC503062  Lycopodium clavatum Joseph P. Tracy 1932-8-13 10341 Humboldt in woods around swamp 3 mi e Trinidad; Northern Coast Region 152 Comment
  SEINET7838508 Image available Lycopodium clavatum Unknown Humboldt "camp 21", Hammond Lumber Compant, Trinidad 152 Comment
  OBI1071  Lycopodium inundatum Lawrence L. Kiefer 1964-5-20 1436 Humboldt Big Lagoon State Park 23 Comment
  SEINET11770339  Lysichiton americanus F. H. Utech 1986-1 86 -416 Humboldt between Capetown & Ferndale along Mattole Creek, SW slope of Bear River Ridge 100 Comment
  UC176173  Lysichiton americanus Joseph P. Tracy 1913-3-30 4029 Humboldt at Eureka Northern Coast Region, Eureka 0 Comment
  RSA0015872  Lythrum hyssopifolia Joseph P. Tracy 1927-8-7 8321 Humboldt Lack Pond; in Trinity River Valley, opposite mouth of Willow Creek. 152 Comment
  HSC40032  Madia gracilis Thomas W. Nelson, Jane P. Nelson 1976-6-22 2880 Humboldt At Goat Hill Lookout 1666 Comment
  HSC72617  Madia gracilis J. P. Smith 1977-7-3 9239 Humboldt Six Rivers National Forest, on Rd. to Onion Lake, 4.7 mi. from junction with Hwy. 36 610 Comment
  HSC74211  Madia gracilis M. A. Baker 1980-7-15 2961 Humboldt Near Whiting Ridge. 1341 Comment
  UC176727  Madia gracilis Joseph P. Tracy 1909-8-1 3069 Humboldt Kneeland Prairie 762 Comment
  RSA1369  Mahonia nervosa E. R. Johnson 1929-08 618 Humboldt 7 miles east of Arcata on the road to Willow Creek. 76 Comment
  CHSC68509  Maianthemum dilatatum Vernon H. Oswald 1997-4-10 8324 .1 Humboldt Elk Head, north end of Trinidad State Beach. 30 Comment
  RSA13579  Maianthemum dilatatum H. E. Parks 1932-05 4289 Humboldt Bishop Pine Lodge, Trinidad. Comment
  UCD139044  Maianthemum dilatatum Linda M. Barker 1976-5-13 1484 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  HSC101972  Maianthemum racemosum M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-12 869 Humboldt Patterson Meadows 1566 Comment
  HSC15642  Maianthemum racemosum subsp. amplexicaule Paul Shields May 1955 Humboldt 7 mi. W of Hoopa Comment
  HSC41355  Maianthemum racemosum subsp. amplexicaule Brad Klipfel 1974-8-2 507 Humboldt Horse Mtn. Comment
  HSC58003  Maianthemum racemosum subsp. amplexicaule G. L. Clifton, Griswold 1979-7-31 11788 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1805 Comment
  CAS-BOT-BC511457  Maianthemum racemosum subsp. amplexicaule M. P. Dillingham 1972-4-30 s.n. Humboldt Vicinity of Whitehorn, Douglas fir forest Comment
  RSA24193  Maianthemum racemosum subsp. amplexicaule Carl B. Wolf 1941-3-2 9981 Humboldt Along north bank of the Van Duzen River, 4.8 miles above Carlotta 61 Comment
  RSA554593  Maianthemum racemosum subsp. amplexicaule Walter Wisura 1993-5-9 4911 Humboldt Northwest: Hwy 299, 5.7 mi. W of Willow Creek at E-fork camp ground. Comment
  UC1239528  Malacothrix floccifera Joseph P. Tracy 1916-9-5 4771 Humboldt 4 mi above Mouth of South Fork of Eel River; Northern Coast Ranges, South Fork of Eel River 60 Comment
  UC1223205  Malacothrix floccifera Joseph P. Tracy 1950-6-15 18784 Humboldt 7 mi n Harris (Jenk's Ranch) Comment
  HSC100442  Malacothrix obtusa Carl C. Marshall Jun 1887 458 Humboldt Near Harris. Comment
  CAS-BOT-BC140134  Malus fusca C. B. Wolf 1930-10-26 1766 Humboldt So. edge of Big Lagoon near the Redwood Highway Bridge 3 Comment
  UC72979  Malus fusca H. P. Chandler May 1905 Humboldt Eureka Comment
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Jun 17 2020
  UC668145  Malva neglecta Joseph P. Tracy 1937-9-6 15320 Humboldt Trinity River Valley at Willow Creek Willow Creek; Trinity River Valley, Willow Creek 152 Comment
  SEINET12011533  Marah fabacea E. A. York 1990-1-10 2661 Humboldt USGS Redwood Field Station, Arcata Comment
  HSC26658  Marah oregana Thomas W. Nelson 1973-5-22 920 Humboldt Growing on C.S.U.H. campus Comment
  HSC98545  Marah oregana Cara Witte 2008-6-2 674 Humboldt Along National Forest 1. North of Kinsey Ridge. 1291 Comment
  HSC99663  Marah oregana N. D. Dennis 1965-4-29 35 Humboldt 3 mi. N of Eureka on Old Arcata Rd. Comment
  UC577418  Marrubium vulgare Joseph P. Tracy 1925-5-17 6973 Humboldt Trinity River Valley near the South Fork; Northern Coast Ranges, Trinity River Valley near South Fork 182 Comment
  HSC48059  Medicago arabica Thomas W. Nelson 1978-4-24 3889 Humboldt Eureka, along F St. between Orchard and Willow St. Comment
  HSC15527  Medicago polymorpha J. Lackey 1971-3-28 10 Humboldt 3 mi. S of Cape Mendocino on Capetown Rd. Comment
  UC673065  Medicago sativa Joseph P. Tracy 1934-7-15 13407 Humboldt 2 mi s Fields Landing; Humboldt Bay Region 9 Comment
  HSC61766  Medicago sativa Ruby Van Deventer 1963-7-1 Humboldt Along Klamath River at Pecwan Comment
  UC1103760  Melica californica Joseph P. Tracy 1950-6-15 18780 Humboldt 5 mi n Harris; Mail Ridge 944 Comment
  UC180493  Melica californica Joseph P. Tracy 1913-6-18 4195 Humboldt opposite Buck Mountain (Dinsmore's Ranch, Valley of Van Duzen River); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  POM126121  Melica harfordii Joseph P. Tracy 1923-5-30 6243 Humboldt Dyerville, along Eel River from South Fork to Scotia. 61 Comment
  UC181238  Melica harfordii Joseph P. Tracy 1913-6-13 4116 Humboldt near summit of ridge between Van Duzen River and Mad River (on Dinsmore's Ranch); Northern Coast Ranges 1066 Comment
  UC188817  Melica harfordii Joseph Burtt Davy and Walter C. Blasdale 1899-7-30 5210 Humboldt Russ Ranch Comment
  UC277171  Melica harfordii Joseph P. Tracy 1921-6-19 5833 Humboldt Berry's Mountain; Northern Coast Ranges 914 Comment
  UCD87544  Melica harfordii A. H. Shunk 1923-7-12 s.n. Humboldt Briceland. Comment
  HSC75447  Melica spectabilis J. O. Sawyer 1980-7-18 3606 Humboldt North Trinity Mountain Research Natural Area, north of Mill Creek Lake to Red Cap Hole. Comment
  HSC10348  Melica subulata G. N. Bos 1965-5-15 253 Humboldt 8 mi. W of Berry Summit, along Hwy. 299 762 Comment
  HSC97958  Melica subulata Cara Witte, Michael Scott 2007-6-22 340 Humboldt Board Camp Mountain. Road to Tri Board Camp. 1/5 mile after intersection with 4N38. 1486 Comment
  RSA183536  Melica subulata H. S. Logsdon 1964-5-10 6 Humboldt 4.0 miles N.E. of Orick at Boye's Prairie Comment
  UCD88652  Melica subulata A. H. Murphy 1951-5-18 41 Humboldt K. Roscoe Ranch, Upper Mattole. Comment
  UCSC000054  Melica subulata August L. Hormay 1932-5-11 s.n. Humboldt Korbel Comment
  UCD89112  Melica torreyana A. H. Murphy 1951-4-18 s.n. Humboldt Fort Seward. 182 Comment
  JEPS65536  Melilotus indicus Lincoln Constance 1934-5-26 662 Humboldt s end of Dyerville Bridge, South Fork of Eel River, Bull Creek Region Dyerville Bridge; Bull Creek Region, South Fork Eel River, Dyerville Bridge 45 Comment
  HSC12565  Mentha pulegium D. La Conte 1970-7-7 1 Humboldt Comment
  CAS-BOT-BC348376  Micropus californicus var. californicus M. S. Jussel 1931-5-2 s.n. Humboldt 25 miles n. of Garberville Comment
  CAS-BOT-BC348375  Micropus californicus var. californicus Doris K. Kildale 1926-4-30 1915 Humboldt Fruitland Hill - Harris Road Comment
  UC164797  Microseris bigelovii Joseph P. Tracy 1911-5-27 3190 Humboldt Humboldt Bay Northern Coast Region Comment
  UC1223198  Microseris douglasii subsp. douglasii Joseph P. Tracy 1950-7-6 19001 Humboldt 2 mi s Burr Valley (on the Albee Road) 1158 Comment
  CAS-BOT-BC322676  Microseris laciniata Alice Eastwood; John Thomas Howell 1937-6-22 4738 Humboldt Near Alder Point Comment
  UC1199451  Microseris laciniata subsp. laciniata Joseph P. Tracy 1933-7-26 12925 Humboldt s slope Grouse Mountain (towards low creek); North Coast Ranges, s slope Grouse Mountain 1219 Comment
  UC34192  Microseris laciniata subsp. leptosepala Harley P. Chandler June 1901 1408 Humboldt Klamath River North Coast Ranges, Klamath River 243 Comment
  HSC58707  Microseris nutans Griswold, Butler 1979-7-12 7149 Humboldt Near Groves Prairie, close to the town of Willow Creek 1256 Comment
  HSC32274  Microseris nutans D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-13 5628 Humboldt Westward lower slopes of Black Lassic near Trinity Co. line. 1585 Comment
  RSA14133  Mimulus aurantiacus var. aurantiacus Elmer I. Applegate 1923-9-12 3988 Humboldt Stone Lagoon, below Orick Comment
  HSC102111  Mimulus breweri M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 1014 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  HSC20821  Mimulus breweri J. P. Tracy 1932-7-10 10375 Humboldt Trinity Summit 1585 Comment
  HSC40847  Mimulus breweri Thomas W. Nelson 1976-7-9 3003 Humboldt W side of ridge S of E peak of Mount Lassic group 1524 Comment
  HSC97174  Mimulus breweri Yun Chan, Renee Meyer, Sophary Yun 2007-6-13 9 Humboldt 1 mi. east of Hwy. 299 on Forest Service Rd. NF1; Grouse Mountain Meadow 1585 Comment
  UC147904  Mimulus breweri Joseph P. Tracy 1908-6 2699 Humboldt opposite Buck Mountain; Northern Coast Ranges, Van Duzen River Valley 762 Comment
  POM273296  Mimulus cardinalis Lyman Benson 1928-7-12 491 Humboldt Weott Ranger Station, North Coast, Seaward Mt. Range on S. Fork Eel River 61 Comment
  UC582705  Mimulus grandis Joseph P. Tracy 1933-6-6 12501 Humboldt Trinidad 3 Comment
  UC1011930  Mimulus grandis F. W. Pennell and J. P. Tracy 1940-7-8 26107 Humboldt e Eureka; Freshwater 9 Comment
  HSC45656  Mimulus guttatus Diane L. Reed 1978-4-22 24 Humboldt Tish Tang Campground, 5 mi. N of Willow Creek on Hwy. 96 Comment
  UC175795  Mimulus guttatus Joseph P. Tracy 1912-7-26 3825 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  HSC20748  Mimulus guttatus W. A. Heaton 1965-5-17 7 Humboldt 0.5 mi. N of Trinidad St. Park near beach Comment
  UC1196831  Mimulus guttatus Joseph P. Tracy 1937-5-31 15324 Humboldt Willow Creek Trinity River Valley 152 Comment
  UC535723  Mimulus inodorus Eleanor Armstrong 1934-8-18 1138 Humboldt Richardson Grove 121 Comment
  UC582712  Mimulus inodorus Joseph P. Tracy 1935-7-24 14198 Humboldt near Ranger Station; Trinity Summit 1828 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
  UC582701  Mimulus microphyllus Joseph P. Tracy 1933-7-25 12855 Humboldt Grouse Mountain North Coast Ranges 1524 Comment
  HSC98001  Mimulus moschatus Cara Witte 2007-7-20 558 Humboldt Board Camp Butte. Forest Serivce Road 4E27. 1502 Comment
  HSC35623  Mimulus moschatus Thomas W. Nelson, B. Reinhardt 1975-7-30 2109 Humboldt Whiting Spring Comment
  HSC44818  Mimulus nanus var. nanus Thomas W. Nelson, Jane Nelson 1977-6-19 3487 Humboldt Along road on Goat Hill; unsurveyed section east of Section 12 1616 Comment
  UC582596  Mimulus nanus var. nanus Joseph P. Tracy 1937-7-29 15570 Humboldt halfway between Cold Springs and Blake Lookout; Northern Coast Ranges, South Fork Mountain 1676 Comment
  UC213145  Mimulus nasutus Joseph P. Tracy 1920-5-18 5329 Humboldt 4 mi above Dyerville; Northern Coast Ranges, South Fork Eel River 60 Comment
  HSC49137  Mimulus pilosus R. Becking 1979-7-29 Humboldt Van Duzen River at Cheatam Grove E of Carlotta Comment
  UC582498  Mimulus primuloides subsp. primuloides Joseph P. Tracy 1932-7-14 10534 Humboldt Corral Prairie Trinity Summit 1584 Comment
  HSC55694  Mimulus pulsiferae Overton, Butler 1979-7-26 10015 Humboldt Near White Rock Spring, close to the town of Willow Creek 1554 Comment
  UC1196781  Mimulus pulsiferae Joseph P. Tracy 1912-7-31 3919 Humboldt near summit (stream-bank); Northern Coast Ranges, Buck Mountain 1676 Comment
  UC1116233  Minuartia californica Joseph P. Tracy 1948-6-13 18055 Humboldt ridge top near Harris 914 Comment
  UCD98260  Minuartia californica R. N. Raynor 1935-4-23 s.n. Humboldt Fort Seward. Comment
  UC229832  Minuartia cismontana Joseph P. Tracy 1921-5-30 5479 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  HSC104427  Minuartia douglasii Greg O'Connell 2013-6-27 Humboldt Summit of Mt. Andy 1159 Comment
  SEINET11943609  Minuartia douglasii H. P. Chandler 1901-1 1454 Humboldt Klamath River 305 Comment
  UCD98275  Minuartia douglasii Joseph P. Tracy 1942-6-23 17225 Humboldt Trinity Summit; one mile west of Mud Springs. Comment
  CHSC115049  Mitella caulescens Stephanie Puentes 2008-6-19 09120 Humboldt 1.5 miles west of Lake Prairie on the southwest facing bank of Maple Creek. 670 Comment
  CAS-BOT-BC433010  Mitella diversifolia Joseph P. Tracy 1942-6-23 17235 Humboldt Along trail from Hoopa to the summit. Trinity Summit. Near Box Camp 1524 Comment
  UC303176  Mitella ovalis Joseph P. Tracy 1923-4-8 6176 Humboldt Carlotta Northern Coast Ranges 60 Comment
  HSC99347  Modiola caroliniana Peter Sorensen 1976-6-16 Humboldt Woodley Island Comment
  UC183559  Moehringia macrophylla Joseph P. Tracy 1913-5-4 4056 Humboldt Kneeland Prairie; Northern Coast Ranges, Kneeland Prairie 762 Comment
  HSC101619  Monardella odoratissima subsp. pallida Cara Witte 2007-6-28 390 Humboldt Intersection of 6N08 (Friday Ridge Road) and 5N39. 1475 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
  HSC98012  Monardella sheltonii Cara Witte 2007-7-27 603 Humboldt Forest Service Road 4N32. 1.4 miles north of intersection with Forest Service Road 4N32B. 1413 Comment
  HSC99284  Monardella villosa J. Wendell Howe 1931-6-19 Humboldt Redway Comment
  UCR15548  Monardella villosa subsp. subserrata George K. Helmkamp 1978-7-15 s.n. Humboldt Prairie Creek Redwoods State Park 305 Comment
  UC1239682  Monardella villosa subsp. villosa Joseph P. Tracy 1939-8-5 16381 Humboldt Dinsmore's 731 Comment
  UC774992  Monardella villosa subsp. villosa Carl B. Wolf 1937-8-13 9223 Humboldt 8 mi east Hoopa Valley on new road towards Trinity Summit; North Coast Range 1219 Comment
  JEPS5877  Montia diffusa Joseph P. Tracy 1930-8-24 9165 Humboldt Kneeland Prairie 762 Comment
  HSC32127  Montia fontana D. E. Anderson, S. Dowty, Thomas W. Nelson 1972-6-14 5587 Humboldt Mt. Lassic and two smaller peaks to immediate E 1768 Comment
  RSA249389  Montia fontana D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5587 Humboldt Mount Lassic and 2 smaller peaks to immediate east. 1768 Comment
  UC162354  Montia howellii Joseph P. Tracy 1909-5-2 2956 Humboldt at Eureka Eureka; Northern Coast Region, Eureka 0 Comment
  HSC69868  Montia linearis Thomas W. Nelson 1978-5-28 4097 Humboldt McKeown Ranch, N of Dinsmore 762 Comment
  CAS-BOT-BC445150  Montia parvifolia H. D. Ripley; R. C. Barneby 1945-6-15 6806 Humboldt Trinidad Head 15 Comment
  HSC102504  Montia parvifolia M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-28 1489 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1106 Comment
  HSC55167  Montia parvifolia Gilbert Muth 1979-8-1 12160 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1677 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
  UCD86803  Muhlenbergia mexicana Joseph P. Tracy 1916-9-5 4774 Humboldt South Fork of Eel River, 4 miles above the mouth. 60 Comment
  HSC3729  Myosotis sylvatica Richard Steele 1962-4-4 13 Humboldt Arcata; just W of HSC campus 15 Comment
  SEINET6671220 Image available Myrica californica Joseph P. Tracy 1931-1 9332 Humboldt Dows Prairie Comment
  CDA20056  Myriophyllum aquaticum R. Spadoni, Green 2002-10-9 PDR P 070866 -A Humboldt Pacific Lumber Co, Scotia. 0 Comment
  HSC6874  Nasturtium officinale R. L. Jarvis 1962-4-17 17 Humboldt 0.5 mi. S of Bayside turnoff on Old Arcata Rd. 15 Comment
  HSC6893  Nasturtium officinale P. W. Shields 1955-6-16 Humboldt HSU campus Comment
  HSC75466  Navarretia capillaris J. O. Sawyer 1980-7-18 3596 Humboldt North Trinity Mountain Research Natural Area, north of Mill Creek Lake to Red Cap Hole. Comment
  HSC56058  Navarretia divaricata G. L. Clifton, Griswold 1979-7-31 11693 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1805 Comment
  HSC32096  Navarretia intertexta D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-17 5704 Humboldt McKeown Ranch, N of Dinsmore Comment
  UC1197903  Navarretia linearifolia subsp. linearifolia Joseph P. Tracy 1947-7-9 17859 Humboldt Horse Mountain 1432 Comment
  RSA528862  Navarretia sinistra R. Spellenberg 1990-7-10 10238 Humboldt Extreme E edge county, 11 air mi. E of Burnt Ranch at Buck Flat, at junction of USFS road 5N01 and USFS road 1, 12 mi. S of Berry Summit (on Calif. Highway 299) on USFS 1 1433 Comment
  UC1198532  Navarretia squarrosa Joseph P. Tracy 1929-10-20 8683 Humboldt Larrabee Valley Northern Coast Ranges 701 Comment
  SEINET3156479  Nemophila heterophylla D. E. Anderson 1965-5-8 3650 Humboldt About 3 miles N of Willow Creek along road on E side of Trinity River. Comment
  HSC13589  Nemophila menziesii D. E. Anderson 1965-4-24 3532 Humboldt Along Titlow Hill Rd. Comment
  JEPS1883  Nemophila menziesii var. atomaria Joseph P. Tracy 1932-5-10 9928 Humboldt Bear River Ridge , Bear River Ridge (Northern Coast Ranges) 609 Comment
  RSA74751  Nemophila menziesii var. atomaria Albert M. Vollmer, L. Beane 1951-6-6 122 Humboldt On road between Orick and Weitchpec. Comment
  UC67090  Nemophila parviflora Harley P. Chandler 1901-6-1 1537 Humboldt Klamath River North Coast Ranges, Klamath River 426 Comment
  UC198640  Nemophila pedunculata Joseph P. Tracy 1917-5-27 4784 Humboldt Eureka Northern Coast Ranges, at Eureka 0 Comment
  CDA17340  Noccaea fendleri subsp. californica P. Haggard 2004-8-15 PDR 1285929 Humboldt North Coast Ranges; Friday Ridge Rd, Willow Creek. 0 Comment
  UCD110212  Notholithocarpus densiflorus Joseph P. Tracy 1948-9-20 18224 Humboldt Willow Creek Canyon, along Trinity Highway. 457 Comment
  HSC37350  Notholithocarpus densiflorus var. densiflorus Gary S. Lester, Roger L. Yearout, Judith G. Dickson 1974-7-24 483 Humboldt Along Lost Man Creek. 38 Comment
  UC1198782  Oemleria cerasiformis Joseph P. Tracy 1913-3-30 4030 Humboldt near Eureka (at Stephen Hill place); Northern Coast Region 0 Comment
  UC154222  Oemleria cerasiformis Joseph P. Tracy 1909-6-13 2993 Humboldt near Blue Lake; Northern Coast Ranges, Mad River Valley 30 Comment
  UC902147  Oemleria cerasiformis Joseph P. Tracy 1946-7-13 17617 Humboldt Carlotta; open flat by old Strong's District School House, 5 mi e of town 60 Comment
  HSC90660  Oenanthe sarmentosa Gail Newton 1982-6-10 3639 Humboldt Elk River Wildlife Area, Eureka Comment
  UC314582  Oenanthe sarmentosa Joseph P. Tracy 1924-9-28 6910 Humboldt Centerville Northern Coast Ranges, Centerville 6 Comment
  CDA38485  Oenanthe sarmentosa Tario 1932-9-21 s.n. Humboldt Arcata. 0 Comment
  CHSC70154  Oenothera glazioviana David K. Imper 1993-6-15 Humboldt Base of sand dunes, south end of Manila, west of Eureka. 6 Comment
  RSA0004550  Oenothera hookeri subsp. wolfii Carl B. Wolf, E. R. Johnson 1934-12-11 6172 Humboldt Redwood Highway just south of Trinidad. 30 Comment
  HSC16488  Oenothera wolfii D. E. Anderson 1962-7-5 2246 Humboldt Luffenholtz Comment
  UC1196945  Oenothera wolfii Joseph P. Tracy 1934-8-24 13598 Humboldt Willow Creek Trinity River Valley 152 Comment
  UCR111734  Oenothera wolfii D. K. Imper 1993-5-13 s.n. Humboldt North Coast, Lost Coast Road c. 4 miles south of Cape Mendocino at Davis Creek Bridge, from bridge along road c. 300 ft. to north 6 Comment
  CAS-BOT-BC502775  Orobanche californica subsp. californica J. Clausen 1932-9-18 690 Humboldt About 5 mi S of Cape Mendocino Lighthouse Comment
  HSC16688  Orobanche fasciculata F. B. Plett 1963-5-15 50 Humboldt 1.5 mi. N of Trinidad along Old Hwy. 101 Comment
  POM43761  Orthocarpus erianthus var. gratiosus Marcus E. Jones 1924-4-26 s.n. Humboldt Eureka. 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
  HSC100700  Orthocarpus purpurascens Carl C. Marshall May 1886 209 Humboldt Salt marshes, Humboldt Bay. Comment
  UC314579  Osmorhiza berteroi Joseph P. Tracy 1923-6-19 6291 Humboldt Upper Mattole Valley Northern Coast Ranges 152 Comment
  UC642235  Osmorhiza berteroi Joseph P. Tracy 1930-7-17 9018 Humboldt near McKay Camp; South Fork Mountain 1676 Comment
  CDA38481  Osmorhiza berteroi Kaylea Eickhoff, Cara M. Witte 2005-6-1 7 Humboldt Coldspring Camp, 7.4 mi. south of Hwy. 299 on NF1. Comment
  HSC79449  Osmorhiza berteroi Kenneth Clark 1980-4-18 576 Humboldt On access trail to Dead Man's Gulch 52 Comment
  JEPS14233  Osmorhiza occidentalis Joseph P. Tracy 1935-7-24 14189 Humboldt near Ranger Station; Trinity Summit 1828 Comment
  HSC59400  Osmorhiza purpurea Rick Lundquist 1979-5-2 55 Humboldt SE corner 7th & Union Streets 24 Comment
  HSC16722  Oxalis articulata subsp. rubra N. D. Dennis 1965-4-4 6 Humboldt Corner of F and 9th street, in Eureka Comment
  RSA245261  Oxalis corniculata R. A. Vanbianchi 1971-11-5 92 Humboldt Humbolt State College campus. SouthWest corner theatre arts building. Comment
  SDSU604  Oxalis oregana D. F. Howe 1962-5-22 3309 Humboldt 3 miles east of Orick on Bald Mt. road. 396 Comment
  UC17222  Oxalis oregana Harley P. Chandler May, 1901 1160 Humboldt Humboldt Bay North Coast Ranges 30 Comment
  RSA189638  Oxalis oregana Noel Holmgren, James L. Reveal 1966-6-8 2658 Humboldt Coast Range, east of Arcata, 1.5 miles south of Korbel. 274 Comment
  CAS-BOT-BC253709  Panicum capillare Henry M. Pollard 1946-8-22 s.n. Humboldt Ullathorne Riffle, Klamath River, Orleans region Comment
  UC184379  Panicum capillare Joseph P. Tracy 1912-10-20 4009 Humboldt Alton Northern Coast Region, Alton 30 Comment
  SEINET182648 Image available Parapholis incurva S. K. Harris, J. P. Tracy 1936-6-6 3218 Humboldt Eureka, California Comment
  HSC37849  Parentucellia viscosa Peter Sorensen 1976-6-2 Humboldt Woodley Island Comment
  JEPS94285  Parentucellia viscosa Vernon Oswald and Lowell Ahart 1997-9-4 8855 Humboldt Samoa Dunes Recreation Area at the s end of the North Spit separating Humboldt Bay from the ocean North Spit; Samoa Dunes Recreation Area Comment
  UC1222446  Parentucellia viscosa H. E. Parks and Joseph P. Tracy 1932-8-13 10348 Humboldt vicinity Trinidad; Northern Coast Region 60 Comment
  CDA6383  Parentucellia viscosa Mills Jul 1948 Humboldt 0 Comment
  HSC90750  Parentucellia viscosa Jean Hanson 1980-6-22 95 Humboldt Indian (Gunther) Island, Humboldt Bay, City of Eureka, W end of island Comment
  UC249858  Paspalum distichum Joseph P. Tracy with H. E. Parks 1924-8-3 6779 Humboldt Big Lagoon; Northern Coast Region, Big Lagoon 6 Comment
  HSC41014  Paxistima myrsinites J. P. Smith, J. O. Sawyer 1976-5-2 8636 Humboldt 8 mi. W of Loop Rd. on Hoopa Reservation along Redwood Creek-Hoopa Rd. Comment
  HSC54592  Paxistima myrsinites Overton, Butler 1979-7-24 9660 Humboldt Near Friday Camp, close to the town of Willow Creek. 1250 Comment
  HSC20924  Pedicularis densiflora D. E. Anderson 1962-5-1 2202 Humboldt 1 mi. W of Hoopa Comment
  CHSC35535  Pellaea mucronata Thomas Nelson; James Nelson 1976-5-30 2612 Humboldt McKeown Ranch north of Dinsmore. Comment
  HSC24382  Penstemon anguineus J. O. Sawyer 1970-6-24 2255 Humboldt S of Mill Creek Gap, FS Rd. 10N02 1433 Comment
  RSA425609  Penstemon anguineus H. M. Pollard 1948-7-31 s.n. Humboldt Orleans Mt. 1372 Comment
  HSC39933  Penstemon anguineus J. O. Sawyer 1970-6-25 2292 Humboldt 1646 Comment
  JEPS7213  Penstemon anguineus Lincoln Constance 1934-6-19 905 Humboldt Grasshopper Pk near summit South Fork Eel River, Bull Creek Region 914 Comment
  RSA63666  Penstemon anguineus Milo S. Baker 1947-8-10 11911 Humboldt Near end of Forest Rd from Hoopa towards Trinity Summit. 1372 Comment
  HSC76256  Penstemon heterophyllus Denis Kearns 1981-7-6 43 Humboldt Near Mosquito Lake 1122 Comment
  UC1222787  Penstemon heterophyllus var. purdyi Joseph P. Tracy 1950-6-15 18782 Humboldt 7 mi n Harris (at the Jenk's Ranch); n of Harris, at the Jenk's Ranch Comment
  HSC73698  Penstemon laetus subsp. sagittatus M. A. Baker 1980-7-15 2971 Humboldt Near Whiting Ridge. 1341 Comment
  UC1222785  Penstemon laetus var. sagittatus Joseph P. Tracy 1951-6-26 19588 Humboldt n side Board Camp Mountain extreme head of Redwood Creek, n side Board Camp Mountain (at extreme head of Redwood Creek) 1541 Comment
  UC205464  Perideridia gairdneri subsp. borealis Joseph P. Tracy 1920-8-29 5392 Humboldt Dows Prairie Northern Coast Ranges 60 Comment
  HSC98906  Perideridia kelloggii Cara Witte 2008-8-16 1029 Humboldt Buck Flat. Intersection of National Forest 1 and Forest Service Road 5N01. 1579 Comment
  HSC102106  Perideridia oregana M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 1009 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  HSC98753  Perideridia oregana Cara Witte 2007-7-27 601 Humboldt National Forest 1. 1.5 miles southeast of Forest Service Road 5N09. 1560 Comment
  CAS-BOT-BC413504  Persicaria amphibia Joseph P. Tracy 1934-7-20 13467 Humboldt Big Lagoon 3 Comment
  UC249803  Petasites frigidus var. palmatus Joseph P. Tracy 1923-9-23 6562 Humboldt Howe Creek Northern Coast Ranges 60 Comment
  POM160824  Petasites palmatus Joseph P. Tracy 1926-2-28 7377 Humboldt Trinity River Valley, near the S Fork. 183 Comment
  SDSU6621  Phacelia D. F. Howe 1962-5-21 3300 Humboldt 24.5 miles north of garberville on #101. 61 Comment
  JEPS1444  Phacelia bolanderi Lincoln Constance 1934-5-26 687 Humboldt s end Dyerville Bridge; South Fork Eel River, Bull Creek region 45 Comment
  POM287458  Phacelia bolanderi Lyman Benson 1929-7-16 1833 Humboldt Weott Ranger Station. Comment
  UC198663  Phacelia bolanderi Joseph P. Tracy 1916-5-31 4704 Humboldt Stitz Creek Bluff Northern Coast Ranges, Eel River (along river from South Fork to Scotia) 60 Comment
  UCR15551  Phacelia bolanderi George K. Helmkamp 1978-7-15 s.n. Humboldt Prairie Creek Redwoods State Park 305 Comment
  HSC100499  Phacelia circinata Carl C. Marshall Jun 1886 288 Humboldt Coyote Camp. Comment
  RSA201448  Phacelia egena Alice Eastwood, J. T. Howell 1937-6-23 4759 Humboldt Dinsmore s. Comment
  HSC70344  Phacelia heterophylla Gail Newton 1980-6-7 122 Humboldt Near Brush Mtn. 1128 Comment
  BLMAR532  Phacelia nemoralis subsp. nemoralis Jennifer Wheeler 2009-6-23 532 Humboldt King range, On Paradise Ridge road Comment
  HSC99429  Phacelia procera K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-7 78 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-BC258826  Phalaris angusta W. R. Dudley 1899-1-1 s.n. Humboldt Arcata Comment
  CAS-BOT-BC258866  Phalaris aquatica Joseph P. Tracy 1934-6-21 13241 Humboldt Around Humboldt Bay. Along highway across Salmon Creek flats 6 Comment
  UC552756  Phalaris arundinacea Joseph P. Tracy 1934-7-27 13492 Humboldt Arcata Bottom; North Coast Ranges, Arcata Bottom 12 Comment
  HSC10560  Phalaris californica J. P. Tracy 1925-6-7 7085 Humboldt Lord-Ellis Rd on Bald Mtn. Comment
  HSC55709  Philadelphus californicus Overton, Butler 1979-7-26 10098 Humboldt Near Cold Spring, close to the town of Willow Creek 1417 Comment
  CAS-BOT-BC76573  Philadelphus lewisii Alice Eastwood 1921-7-21 10655 Humboldt Carlotta Comment
  JEPS49596  Philadelphus lewisii W. L. Jepson 1902-7-29 2124 Humboldt Hupa Valley; along streams 243 Comment
  SDSU904  Philadelphus lewisii Harvey 1938-8-14 2335 Humboldt US 299 Comment
  HSC58543  Phleum alpinum Overton, Butler 1979-7-23 9546 Humboldt Near Titlow Hill, close to the town of Willow Creek. 1280 Comment
  RSA12538  Phleum alpinum C. B. Wolf 1934-7-2 5900 Humboldt Snow camp. (Mts. east of Korbel) 1372 Comment
  HSC44533  Phlox adsurgens Brad Klipfel 1973-7-1 140 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC99629  Phlox adsurgens T. Jimerson, J. Pageau 1979-6-22 610 Humboldt Near Bee Mtn., close to the town of Orleans 655 Comment
  JEPS79942  Phlox adsurgens Joseph P. Tracy 1932-7-13 10488 Humboldt near Corral Prairie; Trinity Summit 1584 Comment
  UCD118236  Phlox adsurgens H. P. Olmo 1928-6-10 s.n. Humboldt Wooley Creek. Comment
  UC673118  Phlox gracilis Joseph P. Tracy 1940-5-17 16550 Humboldt Larrabee Valley 731 Comment
  HSC31639  Physocarpus capitatus Glenn McGourty 1974-6-1 83 Humboldt Comment
  HSC35934  Physocarpus capitatus Thomas W. Nelson, Jane P. Nelson, James Nelson 1975-7-15 2027 Humboldt French Camp, Bald Hills. Comment
  UC1198698  Physocarpus capitatus Joseph P. Tracy 1912-7-4 3721 Humboldt near Hydesville 60 Comment
  CAS-BOT-BC73446  Picea sitchensis Carl B. Wolf 1930-10-28 1037 Humboldt 5 miles south of Ferndale on road to Petrolia. 152 Comment
  POM213420  Picea sitchensis C. B. Wolf 1930-10-28 1781 Humboldt 5 miles S Ferndale on road to Petrolia. 152 Comment
  SD51259  Picea sitchensis Darley F. Howe 1961-8-1 Humboldt 3 miles north of Arcata on Highway #101 Comment
  NY34410  Picea sitchensis N. H. Holmgren 1969-6-24 3614 Humboldt Prairie Creek Redwoods, in forest above coast near Del Norte County line Comment
  UCR48598  Picris echioides R. D. Goeden, Don W. Ricker 1987-9-2 870902- 12 Humboldt Loleta, along Cannibal Road 8 Comment
  CAS-BOT-BC78378  Pinus contorta Alice Eastwood 1923-8-14 s.n. Humboldt Samoa Comment
  MACF017417  Pinus contorta Trudy R. Ericson 1974-8-5 198 Humboldt Hwy 255 between Eureka and Arcata, near the shore Comment
  HSC44350  Pinus jeffreyi Brad Klipfel 1974-7-11 694 Humboldt Horse Mtn. Comment
  CAS-BOT-BC78979  Pinus muricata Doris K. Kildale 1927-3-27 2998 Humboldt on highway 1 mile north of Trinidad Comment
  CAS-BOT-BC78982  Pinus muricata Doris K. Kildale 1927-3-19 2941 Humboldt Luffenholtz Creek near Trinidad Comment
  HSC48718  Pityopus californicus M. A. Baker 1979-6-8 802 Humboldt 200 yds. towards ocean from George J. Yams memorial Grove on James Irvine Trail. Bulk Collection 165 Comment
  HSC48720  Pityopus californicus T. Mainwaring 1978-6-2 Humboldt Horse Mountain Area. Bulk Collection 175 Comment
  SEINET3152905  Plagiobothrys nothofulvus N. Dennis 1965-6-11 114 Humboldt About 1/4 miles S and 1 mile E of the juction of Berry Ridge Road and the Eureka-Bridgeville county road, along Ashfield Ridge Road. About 5 miles SE of Kneeland. 792 Comment
  UC526810  Plagiobothrys nothofulvus Joseph P. Tracy 1932-5-1 9861 Humboldt near Garberville; North Coast Ranges, Redway 182 Comment
  UC668231  Plagiobothrys reticulatus Joseph P. Tracy 1938-6-17 15963 Humboldt s of point Cape Mendocino 3 Comment
  LA204802  Plagiobothrys scopulorum Joseph P. Tracy; 1935-5-25 13844 Humboldt Fort Seward 106 Comment
  UC1222200  Plagiobothrys scouleri Joseph P. Tracy 1949-8-11 18452 Humboldt e of Korbel (at Hungry Hollow); Bald Mountain 762 Comment
  HSC100408  Plagiobothrys tenellus Carl C. Marshall Apr 1887 372 Humboldt Hoopa Valley. Comment
  UC1180486  Plagiobothrys tenellus Robert Ornduff 1960-6-1 6179 Humboldt meadow on high ridge about 3 mi e Garberville (on road to Alder Point) Comment
  SEINET12275926  Plagiobothrys trachycarpus J. P. Tracy 1942-1 17355 Humboldt 1 mi NE of Garberville 305 Comment
  UC1151994  Plantago erecta Joseph P. Tracy 1950-6-8 18730 Humboldt Bear River Bridge 609 Comment
  HSC84042  Plantago lanceolata C. J. Thomas 1983-5-9 29 Humboldt Adjacent to Hwy. overpass walkway near HSU 23 Comment
  HSC16852  Plantago major Paul Shields Jun 1955 Humboldt 1 mi. N of Weott Comment
  UC585992  Plantago subnuda Joseph P. Tracy 1927-6-26 8220 Humboldt Stone Lagoon 9 Comment
  POM312378  Plantago subnuda Malcolm A. Nobs, S. Galen Smith 1949-8-3 1188 Humboldt Southern outskirts of Eureka Comment
  HSC27019  Platanthera dilatata var. leucostachys Brad Klipfel 1973-8-9 266 Humboldt Big Lagoon County Park Comment
  HSC46168  Platanthera dilatata var. leucostachys J. P. Smith, Steve Selva 1970-6-30 4123 Humboldt Comment
  JEPS79897  Platanthera leucostachys Joseph P. Tracy 1933-7-25 12842 Humboldt in bog Grouse Mountain 1524 Comment
  UC169004  Plectritis brachystemon Joseph P. Tracy 1911-7-7 3381 1/2 Humboldt 3 mi nw of junction of Willow Creek with Trinity River (near Beebe's Ranch); Northern Coast Ranges 914 Comment
  UC1239596  Plectritis congesta Joseph P. Tracy 1935-6-23 13974 Humboldt French Camp Ridge 1066 Comment
  UC602505  Plectritis congesta Joseph P. Tracy 1930-6-8 8734 Humboldt Kneeland Prairie 762 Comment
  HSC104444  Plectritis congesta subsp. brachystemon Jeff Barrett, Keleigh Deitsch, Tessa Purdy 2014-4-13 27 Humboldt Samoa Peninsula, Fairhaven, along south side of Bay Street 5 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
  UCD90103  Pleuropogon refractus A. H. Murphy 1951-6-25 72 Humboldt 1 mile east of Snow Camp, ca. 8 miles e.n.e. of Kneeland. Comment
  HSC40866  Poa annua Linda M. Barker 1976-4-30 1399 Humboldt 3 mi. W of Arcata Comment
  UC525625  Poa annua Joseph P. Tracy 1934-3-11 13148 Humboldt Weitchpec 121 Comment
  HSC10821  Poa confinis Francis Winter 1960-4-30 Humboldt Samoa Peninsula, 6 mi. W of Arcata. Comment
  UC525621  Poa douglasii Joseph P. Tracy 1933-5-20 12224 Humboldt s of point of the Cape Cape Mendocino 3 Comment
  UC589894  Poa douglasii H. S. Yates 1936-6-18 5725 Humboldt near mouth of Little River 4 Comment
  CAS-BOT-BC246619  Poa howellii Joseph P. Tracy 1926-5-15 7490 Humboldt Kneeland Prairie 762 Comment
  HSC10693  Poa macrantha J. W. Johnson 1961-9-3 1080 Humboldt Arcata, Christenson Farm, Samoa Peninsula. Comment
  RSA10134  Poa macrantha Joseph P. Tracy 1933-5-20 12224 Humboldt Cape Mendocino, near ocean shore, south point of the Cape. 3 Comment
  CHSC10131  Poa pratensis R. V. Papike 1962-5-25 32 Humboldt Lawns of Arcata. Along roads. 91 Comment
  HSC10751  Poa pratensis R. H. Berg 1963-4-27 55 Humboldt Prairie Creek State Park, N of Arcata. Comment
  HSC10816  Poa pratensis J. W. Johnson 1961-6-12 1425 Humboldt Arcata, Christenson Farm, Samoa Peninsula. Comment
  SEINET13390783 Image available Poa pratensis A. G. Vestal 1937-6-22 s.n. Humboldt Comment
  UCD91935  Poa pratensis A. H. Murphy 1951-4-19 11 Humboldt Tooby and Prior Ranch, 2 miles south of Blocksburg. Comment
  HSC98530  Poa pratensis subsp. pratensis Cara Witte 2007-7-8 442 Humboldt Board Camp Mountain. Trail 4E28. 1496 Comment
  UC525616  Poa pratensis subsp. pratensis Joseph P. Tracy 1932-7-14 10537 Humboldt Corral Prairie; Klamath Mts, Trinity Summit 1524 Comment
  UC552763  Poa pratensis subsp. pratensis Joseph P. Tracy 1935-6-23 13987 Humboldt French Camp Ridge 1066 Comment
  UC1103167  Poa secunda subsp. secunda Joseph P. Tracy 1927-6-12 8143 Humboldt Horse Mt; Northern Coast Ranges 1524 Comment
  SEINET200570 Image available Poa trivialis J. P. Tracy 1909-6-13 2998 Humboldt On Mad River, 5 miles from its mouth, on damp banks in partial shade. 30 Comment
  UC1103182  Poa unilateralis Joseph P. Tracy 1904-5-1 2050 Humboldt bluff near Bucksfort; Northern Coast Ranges, Humboldt Bay 0 Comment
  CDA3404  Polycarpon tetraphyllum Gordon Leppig, Sylvia Leppig 2000-12-7 1524 Humboldt 10th and I Streets, Arcata. Comment
  UC668188  Polygala cornuta Joseph P. Tracy 1936-8-30 15182 Humboldt Willow Creek Trinity River Valley 152 Comment
  UC1198990  Polygala cornuta var. cornuta Joseph P. Tracy 1911-7-6 3348 Humboldt mountain slopes along road between Three Creeks and mouth of Willow Creek; Northern Coast Ranges 762 Comment
  UC570808  Polygala cornuta var. cornuta H. L. Mason 1932-7-21 7110 Humboldt on road from Arcata to Weaverville; east slope of Southfork Mountains Comment
  RSA53801  Polygonum coccineum H. M. Pollard 1946-9-1 s.n. Humboldt Near Wilson Creek, Orleans region. Comment
  UC55506  Polygonum davisiae Joseph Burtt Davy and Walter C. Blasdale Jun 21 1899-Jun 23 1899 5806 Humboldt Trinity Summit North Coast Ranges Comment
  CAS-BOT-BC418615  Polygonum majus Alice Eastwood 1921-7-21 10668 Humboldt Van Duzen River Comment
  HSC59461  Polygonum paronychia M. A. Ericksen 1979-5-18 296 Humboldt Samoa Dunes, .5 mi. S of Simpson Timber Company plant entrance Comment
  HSC64430  Polygonum paronychia J. P. Smith 1971-10-6 4957 Humboldt End of Murray Rd. in McKinleyville. Comment
  HSC99116  Polygonum phytolaccifolium Cara Witte 2008-6-18 741 Humboldt 2 miles north of the intersection between National Forest 1 and Friday Ridge Road/ 6N08 1580 Comment
  HSC45463  Polygonum polygaloides subsp. kelloggii Thomas W. Nelson, Jane P. Nelson 1978-7-2 4391 Humboldt SE of East peak of the Mount Lassic group 1616 Comment
  CAS-BOT-BC421004  Polygonum spergulariiforme Doris K. Kildale 1928-6-24 5296 Humboldt Entrance to Horse Mountain 853 Comment
  CAS-BOT-BC71829  Polypodium californicum Joseph P. Tracy 1941-3-26 16835 Humboldt Trinity River Valley, at Willow Creek 152 Comment
  HSC1139  Polypodium californicum J. W. Johnson 1962-4-10 1233 Humboldt Arcata, Christenson Farm, Samoa Peninsula. Comment
  UCSB29342  Polypodium californicum Phelps, M. 1972-3-23 Humboldt 1.5 mi from Garberville along Old Briceland Rd., 1,500 yds. N of roadside 213 Comment
  CAS-BOT-BC76843  Polypodium glycyrrhiza Carl D. Duncan 1920-9-22 s.n. Humboldt Supply Creek, Hoopa Comment
  CAS-BOT-BC76847  Polypodium glycyrrhiza Doris K. Kildale 1928-12-30 6766 Humboldt Pillipsville Comment
  HSC39970  Polypodium glycyrrhiza Kurt Hippen, Tom Duebendorfer Humboldt Off Dowes Prairie Rd. 0.25 mi. up Strawberry Cr. Comment
  CAS-BOT-BC72082  Polypodium scouleri Ira L. Wiggins 1930-7-11 4686 Humboldt near Samoa Comment
  UC71483  Polypodium scouleri W. C. Blasdale 1896-6-2 Humboldt w Eureka Comment
  CAS-BOT-BC233071  Polypogon interruptus Joseph P. Tracy 1927-7-16 8261 Humboldt Eureka 60 Comment
  HSC10825  Polypogon interruptus J. P. Tracy 1927-7-16 8261 Humboldt Eureka 0 Comment
  POM252888  Polypogon interruptus H. S. Yates 1936-6-16 5678 Humboldt 1 mile NE of Samoa 3 Comment
  UC207735  Polypogon interruptus Joseph P. Tracy 1916-9-5 4765 Humboldt 4 mi above mouth South Fork of Eel River; Northern Coast Ranges, South Fork of Eel River 60 Comment
  HSC38498  Polypogon monspeliensis R. Sutherland 1976-11-9 1 Humboldt Redwood Creek, Wittemore Grove. 82 Comment
  UC50476  Polypogon monspeliensis Joseph Burtt Davy and Walter C. Blasdale 1899-6-13 5510 Humboldt near Camp Grant; near Camp Grant Comment
  SEINET11681498  Polypogon monspeliensis H. P. Chandler 1901-1 1431 Humboldt Klamath River, North Coast Ranges 335 Comment
  UC1223547  Polystichum imbricans subsp. imbricans Joseph P. Tracy 1951-6-24 19540 Humboldt near Ashfield Butte Ashfield Butte; Kneeland Prairie 762 Comment
  HSC12977  Polystichum munitum M. Athey, D. La Conte 1970-11-28 2 Humboldt HSU campus Comment
  HSC74743  Polystichum munitum Gail Newton 1981-8-6 2386 Humboldt Near Bug Creek 1125 Comment
  CAS-BOT-BC102904  Populus trichocarpa Doris K. Kildale 1926-7-18 2390 Humboldt Redwood Creek at Orick 30 Comment
  HSC87081  Populus trichocarpa Anthony J. Desch, Bryon Cariss 1988-4-23 66 Humboldt 3.7 mi. N of Hwy. 299 on Stover Rd. 244 Comment
  RSA171967  Populus trichocarpa Robert F. Thorne 1957-9-2 18990 Humboldt Eel River. Burlington State Park, just S of Weott. Comment
  HSC45347  Potamogeton natans R. York 1978-4-8 125 Humboldt Between Arcata and Eureka along Hwy. 101 0 Comment
  JEPS393  Potamogeton pectinatus Joseph P. Tracy 1934-7-20 13462 Humboldt Big Lagoon 3 Comment
  UC195349  Potamogeton pectinatus Joseph P. Tracy 1916-6-19 4718 Humboldt Dobbyn Creek; Northern Coast Ranges 182 Comment
  HSC36301  Potamogeton richardsonii Camille Cornish 1973-10-10 5 Humboldt Edge of Freshwater Lagoon Comment
  CAS-BOT-BC143074  Potentilla anserina subsp. pacifica Joseph P. Tracy 1934-7-30 13509 Humboldt Dry Lagoon (Along coast in front of South End of Stone Lagoon) 3 Comment
  UCSB25141  Potentilla anserina subsp. pacifica Keefe, Joseph 1967-7-8 Humboldt South edge of Big Lagoon, 20 miles north of Eureka. 1 Comment
  HSC75483  Potentilla gracilis var. fastigiata J. O. Sawyer 1980-7-18 3603 Humboldt North Trinity Mountain Research Natural Area, north of Mill Creek Lake to Red Cap Hole. Comment
  SEINET12050377  Prosartes smithii F. H. Utech 1988-1 88 -271 Humboldt 14 mi W of Bridgeville enroute to Carlotta on CA 36, Mile Marker 11.40, Van Duzen County Park 50 Comment
  HSC31554  Prunella vulgaris Glenn McGourty 1974-5-11 44 Humboldt Along Maple Creek Rd. Comment
  HSC96503  Prunella vulgaris subsp. vulgaris Gordon Leppig 1998-8-23 1073 Humboldt Big Lagoon County Park, Big Lagoon Bog 3 Comment
  UC630493  Prunella vulgaris var. lanceolata H. E. and S. T. Parks July, 1937 24052 Humboldt Spruce Cove Trinidad; , Trinidad Comment
  POM283342  Prunella vulgaris var. lanceolata Lyman Benson 1928-7-10 443 Humboldt Rolling hills by Humboldt Bay, 4 mi. S Eureka 61 Comment
  SD93020  Prunella vulgaris var. lanceolata W. Bertsch 1953-7-30 220 Humboldt Highway 101 near Dyerville. 60 Comment
  HSC39624  Prunus emarginata Thomas W. Nelson, Jane P. Nelson 1976-6-15 2728 Humboldt Along old trail from lookout to Blocksburg 1585 Comment
  HSC37671  Pseudognaphalium luteoalbum R. Sutherland 1976-8-13 30 .13876 Humboldt In mouth of Redwood Creek at S Fork of Eel River 87 Comment
  CAS-BOT-BC357270  Pseudognaphalium microcephalum Hubert O. Jenkins 1943-8-1 s.n. Humboldt In dry rocky bed of Eel River, Richardson Grove Comment
  UC1199429  Pseudognaphalium ramosissimum Joseph P. Tracy 1900-9-9 945 Humboldt near Hydesville (gravel bar of creek); Yager Creek 60 Comment
  UC1223109  Pseudognaphalium ramosissimum Joseph P. Tracy 1950-9-10 19364 Humboldt foothills 1/2 mi s Cape Town (along coast road. Cape Ridge one mi e of Cape Mendecino); Cape Ridge 152 Comment
  UC902028  Pseudotsuga menziesii var. menziesii Joseph P. Tracy 1949-10-8 18584 Humboldt Trinity River Valley at Willow Creek Trinity River Valley, Willow Creek 152 Comment
  HSC45284  Psilocarphus brevissimus R. W. Becking 1978-5-21 Humboldt Coast Guard Station on the N Spit to Humboldt Bay in bunker area Comment
  CAS-BOT-BC361929  Psilocarphus tenellus L. R. Abrams 1918-6-13 7094 Humboldt Fortuna Comment
  HSC36438  Pteridium aquilinum var. pubescens John Rehling 1974-7-8 6 Humboldt County park at Big Lagoon Comment
  HSC38933  Pteridium aquilinum var. pubescens Linda M. Barker 1976-5-13 1480 Humboldt 3 mi. W of Arcata. Comment
  HSC73078  Pteridium aquilinum var. pubescens M. A. Baker 1980-5-18 1347 Humboldt Near Black Mtn. 792 Comment
  HSC49999  Pyrola dentata M. A. Baker 1979-6-7 792 Humboldt 1250 Comment
  UC1196531  Quercus chrysolepis Joseph P. Tracy 1921-8-21 5938 Humboldt near Willow Creek (at mouth of South Fork of Trinity); Northern Coast Ranges, Trinity River Valley 152 Comment
  UC303002  Quercus chrysolepis Joseph P. Tracy 1926-6-6 7571 Humboldt on road w Hoopa Valley; Northern Coast Ranges, Hoopa Mountain 914 Comment
  SEINET4291710 Image available Quercus kelloggii Unknown 1966-1 660024 Humboldt Avenue of Giants, near Phillipsville. Comment
  UC1196358  Quercus kelloggii Joseph P. Tracy 1913-6-22 4270 Humboldt opposite Buck Mountain (Dinsmore's Ranch); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  HSC72682  Quercus sadleriana J. P. Smith 1977-7-3 9264 Humboldt Onion Lake Comment
  JEPS37674  Quercus sadleriana W. L. Jepson Jul 16 1902-Jul 23 1902 2033 Humboldt just below Trinity Summit 2133 Comment
  UC519303  Quercus vacciniifolia Joseph P. Tracy 1933-8-30 13009 Humboldt Horse Mountain Northern Coast Ranges 1524 Comment
  CAS-BOT-BC410975  Ranunculus acris Elizabeth Parsons Hawver 1915-6-1 s.n. Humboldt Carlotta Comment
  JEPS55034  Ranunculus alismifolius var. alismellus W. L. Jepson July, 1902 2106 Humboldt Trinity Summit 2133 Comment
  HSC56169  Ranunculus alismifolius var. hartwegii G. L. Clifton, Griswold 1979-8-1 12060 Humboldt Near N Trinity Mtn., close to the town of Hoopa. 1798 Comment
  CAS-BOT-BC379199  Ranunculus aquatilis var. aquatilis Henry M. Pollard 1946-8-13 s.n. Humboldt pond near Harley place, Orleans region Comment
  UC1103003  Ranunculus aquatilis var. capillaceus Joseph P. Tracy 1913-3-9 4024 Humboldt Alton Northern Coast Region (ditch by roadside) 30 Comment
  UC1103006  Ranunculus aquatilis var. hispidulus Joseph P. Tracy 1926-7-5 7722 Humboldt pond near Redwood House (head of creek); Northern Coast Ranges, Grizzly Creek 609 Comment
  JEPS5885  Ranunculus bulbosus Joseph P. Tracy 1938-7-15 16080 Humboldt near Grizzly Bluff; Eel River Valley 15 Comment
  CAS-BOT-BC378851  Ranunculus californicus var. californicus Kenneth Clark 1980-3-22 521 Humboldt on ridge of disturbed hillside above Dead Man's Gulch Comment
  HSC45060  Ranunculus californicus var. californicus R. Sutherland 1978-4-24 10 .24478 Humboldt Gravel slide of road cut 323 Comment
  UC1103011  Ranunculus flammula J. P. Tracy 1901-5-12 1080 Humboldt immediate vicinity of Eureka 0 Comment
  HSC96199  Ranunculus occidentalis Andrew Byers, Stuart E. Richardson III 2005-6-3 1 Humboldt 19.3 mi. S of Hwy. 299 on NF1 1205 Comment
  JEPS60699  Ranunculus occidentalis W. L. Jepson 1934-5-7 16703 Humboldt Buckeye Prairie Bull Creek Comment
  UC1542903  Ranunculus occidentalis H. E. Parks, J. P. Tracy 1930-5-25 859 Humboldt Laribee Valley 762 Comment
  HSC49168  Ranunculus occidentalis J. O. Sawyer 1977-4-23 2837 Humboldt Along Bald Hills Rd. E of Hoopa Comment
  POM126167  Ranunculus orthorhynchus Joseph P. Tracy 1922-5-21 6050 Humboldt Fieldbrook. 61 Comment
Read comments
Oct 27 2009
  UC1542906  Ranunculus orthorhynchus var. orthorhynchus H. E. and S. T. Parks May 1930 755 Humboldt Laribee Valley Comment
  UC249652  Ranunculus parviflorus Joseph P. Tracy 1922-5-21 6053 Humboldt Blue Lake Northern Coast Ranges (depression by roadside) 30 Comment
  JEPS5881  Ranunculus repens Joseph P. Tracy 1938-5-8 15740 Humboldt 4 mi e Carlotta 30 Comment
  UC838004  Ranunculus repens Eliz. Parsons Hawver Jun 1915 Humboldt Carlotta Comment
  HSC36226  Ranunculus repens var. repens John Rehling 1975-4-21 51 Humboldt Along Jolly Giant Creek E of HSU campus Comment
  POM269223  Ranunculus sardous Joseph P. Tracy 1938-7-15 16080 Humboldt Humbold County: Eel River Valley, near Grizzly Bluff, Troublesome weed, recently established in rich valley lands Comment
  UC1196274  Ranunculus uncinatus Joseph P. Tracy 1922-6-5 6085 Humboldt Patrick's Point Northern Coast Ranges 30 Comment
  UC1196262  Ranunculus uncinatus J. P. Tracy 1900-5-30 828 Humboldt Forest Park Eureka 0 Comment
  HSC64070  Raphanus sativus J. P. Smith 1971-10-6 4965 Humboldt End of Murray Rd. in McKinleyville. Comment
  RSA2941  Rhamnus californica Carl B. Wolf 1931-8-31 2381 Humboldt Near mouth of S Fork of Trinity River, on road to sandy bar swimming hole. 244 Comment
  CAS-BOT-BC56610  Rhododendron macrophyllum Volney Rattan 1878-1-1 s.n. Humboldt unspecified Comment
  CAS-BOT-BC200385  Rhododendron occidentale var. paludosum Doris K. Kildale 1928-7-1 5305 Humboldt French Camp - Orick-Martin's [Martins] Ferry road Comment
  CAS-BOT-BC433130  Ribes Doris K. Kildale 1927-5-15 3298 Humboldt Petrolia Comment
  CAS-BOT-BC92521  Ribes binominatum Joseph P. Tracy 1932-7-13 10487 Humboldt Klamath Mountains. Trinity Summit. Near Corral Prairie. 1524 Comment
  UCR45394  Ribes cruentum Thomas W. Nelson, Jane P. Nelson 1977-5-30 3418 Humboldt Beside State Route 36 just west of Dinsmore at Hwy bridge over Van Duzen River 732 Comment
  HSC103215  Ribes divaricatum var. pubiflorum Jade Paget-Seekins 2010-4-16 9 Humboldt Hwy 36. Van Duzen County Park. Along the road on the west side of the park. 95 Comment
  BLMAR564  Ribes inerme Jennifer Wheeler 2010-3-29 564 Humboldt Headwaters Forest Reserve, along Elk River Trail within first mile, east side trail 42 Comment
  CAS-BOT-BC168855  Ribes inerme var. klamathense Joseph P. Tracy 1927-5-15 8039 Humboldt Trinity River Valley, near the South Fork 182 Comment
  UC492206  Ribes inerme var. klamathense Joseph P. Tracy 1927-5-15 8039 Humboldt near The South Fork; Northern Coast Ranges, Trinity River Valley 182 Comment
  UC667072  Ribes inerme var. klamathense Joseph P. Tracy 1937-4-3 15243 Humboldt Willow Creek Trinity River Valley 152 Comment
  HSC103234  Ribes lacustre Jade Paget-Seekins 2010-6-26 29 Humboldt On Long Ridge Road, up Big Hill Road outside of Hoopa. 1274 Comment
  UCR80295  Ribes laxiflorum H. E. Parks, S. T. Parks 1937-6-4 24004 Humboldt North Coast, along Prairie Creek at Valley Green Comment
  HSC31135  Ribes lobbii J. O. Sawyer 1970-6-24 2268 Humboldt S of Mill Creek Gap, FS Rd. 10N02 1433 Comment
  HSC76263  Ribes lobbii Denis Kearns 1981-7-23 425 Humboldt Near Whiteys Peak. 1524 Comment
  CAS-BOT-BC173366  Ribes lobbii Volney Rattan 1882-6-1 s.n. Humboldt Coast Mts. North of San Francisco Bay Comment
  HSC20319  Ribes menziesii Doris K. Kildale 1926-3-26 1650 Humboldt Old Fortuna Rd. near junction with new Hwy. beyond Fernbridge Comment
  UC552232  Ribes menziesii Joseph P. Tracy 1934-8-11 13565 Humboldt 2 mi e Arcata (Fickle Hill); North Coast Ranges 304 Comment
  RSA0021771  Ribes menziesii Doris K. Kildale 1927-2-22 s.n. Humboldt Bucksport, near Eureka. Comment
  UC1198943  Ribes roezlii var. cruentum Joseph P. Tracy 1927-3-27 7871 Humboldt East Fork of Willow Creek Northern Coast Ranges, Willow Creek Canyon 457 Comment
  CAS-BOT-BC211977  Ribes sanguineum Joseph P. Tracy 1949-8-11 18450 Humboldt Hungry Hollow, Bald Mountain 762 Comment
  HSC20336  Ribes sanguineum E. W. Styskel 1963-3-3 2 Humboldt 3 mi. SE of Korbel on Snow Camp Rd. 290 Comment
  HSC20348  Ribes sanguineum C. O. Baker 1962-3-22 12 Humboldt 2 mi. S of Trinidad along old Hwy. 101 122 Comment
  HSC57037  Ribes sanguineum Overton, Butler 1979-7-24 9674 Humboldt Near Friday Camp, close to the town of Willow Creek. 1250 Comment
  UC1563694  Ribes sanguineum Barbara Ertter with Thomas J. Delendick 1987-5-16 6939 Humboldt ca. 3 mi e Berry Summit (on Hwy 299, on s side of road above Willow Cr., ca. 20 air mi e of Arcata) 800 Comment
  RSA0019530  Ribes sanguineum Barbara Ertter, Thomas Delendick 1987-5-16 6939 Humboldt Ca. 3 mi. E of Berry Summit on Highway 299, ca. 20 air miles E of Arcata; on S side of road above Willow Creek. 800 Comment
  CAS-BOT-BC144689  Ribes sanguineum var. glutinosum C. Epling; Wm. Robison 1935-7-22 s.n. Humboldt Patrick's Point Comment
  HSC103217  Ribes sanguineum var. glutinosum Jade Paget-Seekins 2010-3-14 3 Humboldt McKinleyville, west end of Hiller Park. 10 Comment
  HSC93267  Ribes sanguineum var. glutinosum Gordon Leppig 1998-3-25 723 Humboldt McKinleyville, Central Ave. 43 Comment
  UCR179227  Ribes sanguineum var. glutinosum R. G. Swinney 1968-3-28 233 Humboldt East of Humboldt State College, Arcata 152 Comment
  UC673061  Robinia pseudoacacia Joseph P. Tracy 1934-7-1 13277 Humboldt Willow Creek; Northern Coast Ranges, Trinity River Valley 152 Comment
  HSC56123  Romanzoffia sitchensis G. L. Clifton, Griswold 1979-8-1 11910 Humboldt Near Mill Creek Lakes, close to the town of Hoopa. 1692 Comment
  UC1222364  Romanzoffia tracyi Joseph P. Tracy 1950-6-17 18829 Humboldt in <Tracy> garden Eureka Comment
  CAS-BOT-BC74512  Rorippa curvisiliqua S. K. Harris; J. P. Tracy; H. S. Yates 1936-6-17 3438 Humboldt Northwest slopes of Buck Mountain. 822 Comment
  HSC6899  Rorippa curvisiliqua D. E. Anderson 1961-9-30 1844 Humboldt Divide Lake Comment
  JEPS53820  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
  HSC19645  Rosa canina Francis Winter 1960-4-24 Humboldt 1 mi. S of Hoopa Indian Reservation along Hoopa-Willow Creek Hwy. 152 Comment
  JEPS47283  Rosa eglanteria W. L. Jepson 1936-8-18 17947 Humboldt 1/2 mi nw Petrolia (along a gully in the village) Comment
  UC180209  Rosa eglanteria Joseph P. Tracy 1914-6-14 4508 Humboldt near Hydesville; Northern Coast Region 60 Comment
  UC183752  Rosa eglanteria Joseph P. Tracy 1912-8-4 3981 Humboldt near Hydesville; Northern Coast Region 60 Comment
  HSC72803  Rosa gymnocarpa Gail Newton 1980-6-16 159 Humboldt Near Monks Camp 109 Comment
  POM365829  Rosa gymnocarpa Jane Turner, F. M. Ball 1962-7-10 1143 Humboldt East Fork Willow Creek Forest Camp, Hwy 299 ca. 5 mi. W of Willow Creek in Six Rivers National Forest. 457 Comment
  UC1052193  Rosa gymnocarpa J. L. Meyer 1954-10-10 33 Humboldt 3 mi n Blocksburg (outside National Forest); Quadrangle 29A3 457 Comment
  CAS-BOT-BC146825  Rosa nutkana Ashley C. Browne 1936-6-11 s.n. Humboldt Patrick's Point State Park Comment
  CAS-BOT-BC146830  Rosa nutkana L. R. Abrams 1922-6-25 8242 Humboldt Near South Bay Comment
  UC303026  Rosa nutkana var. nutkana Joseph P. Tracy 1923-6-22 6345 Humboldt Angels Ranch Bald Mt.; Northern Coast Ranges, Bald Mt. 457 Comment
  HSC60108  Rosa pisocarpa M. A. Baker 1978-5-2 451 Humboldt Elk Head Comment
  UCD113897  Rosa rubiginosa J. A. Delapp 1956-6-14 2 Humboldt California Forest and Range Experiment Station. 3 miles W of upper Mattole School. 152 Comment
  HSC19673  Rubus armeniacus M. L. Stuart 1965-4-18 6 Humboldt Fern Lake Dam Comment
  HSC57115  Rubus leucodermis Overton, Butler 1979-7-25 9858 Humboldt Near Ammon Creek, close to the town of Willow Creek. 671 Comment
  CAS-BOT-BC147244  Rubus parviflorus Doris K. Kildale 1926-3-26 1635 Humboldt Old Kneeland Road 609 Comment
  HSC22040  Rubus parviflorus B. D. Rogers, D. E. Anderson 1965-5-1 514 Humboldt 4 mi. SE of Arcata along Jacoby Creek Comment
  SEINET4093648  Rubus parviflorus O. M. Clark 1932-1 707 Humboldt South Eureka. Comment
  UC492166  Rubus parviflorus Joseph P. Tracy 1932-7-15 10576 Humboldt near Corral Prairie; Klamath Mountains, Trinity Summit, nr Corral Prairie 1524 Comment
  UCSC000369  Rubus parviflorus Unknown 1975-5-30 52 Humboldt Eureka; T.P.L. Co., Freshwater Comment
  HSC100638  Rubus spectabilis Carl C. Marshall Apr 1886 165 Humboldt Everywhere in rich soils. Comment
  HSC19688  Rubus spectabilis S. J. Hawks 1965-4-3 16 Humboldt Luffenholtz Beach Comment
  UC203878  Rubus spectabilis Joseph P. Tracy 1918-5-12 4932 Humboldt at Eureka; Northern Coast Ranges, at Eureka 0 Comment
  UC709449  Rubus spectabilis Joseph P. Tracy 1941-4-8 16853 Humboldt along Trinity Highway (Willow Creek Canyon, along head of Willow Creek); Willow Creek Canyon, along head of Willow Creek 762 Comment
  UCD150631  Rubus spectabilis Wayne Padgett 1974-5-25 65 Humboldt Two miles S of Patrick's Point State Park on coast road. Comment
  CAS-BOT-BC158790  Rubus ursinus J. P. Tracy 1902-7-4 1759 Humboldt Immediate vicinity of Eureka 152 Comment
  UC1199049  Rubus ursinus J. P. Tracy 1901-6-23 1164 Humboldt immediate vicinity Eureka; immediate vicinity of Eureka 0 Comment
  UC999203  Rubus ursinus H. E. Parks March 1941 Humboldt Spruce Cove , Spruce Cove (Trinidad) Comment
  UCD17837  Rubus ursinus H. Olmo 8-10 May 1962 62- 39 Humboldt California. Humboldt County: 0.5 miles west of Dinsmore. Comment
  HSC102579  Rumex acetosella M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-29 1566 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1579 Comment
  HSC73450  Rumex acetosella Gail Newton 1980-7-14 1467 Humboldt Near Last Chance Ridge. 1219 Comment
  HSC95749  Rumex acetosella Steven Lee 2004-4-26 33 Humboldt Along Stuart Ave. W of of Alliance Comment
  HSC17583  Rumex acetosella J. E. Lankila 1962-5-14 28 Humboldt W bank of river at Fernbridge Comment
  UCSC000212  Rumex aquaticus var. fenestratus Franklin P. Nutting 1894-7-25 s.n. Humboldt Willow Creek Comment
  CAS-BOT-BC421523  Rumex crassus C. L. Hitchcock; J. S. Martin 1939-7-14 5438 Humboldt At Shelter Cove Comment
  UC1735899  Rumex occidentalis Dean W. Taylor 1991-9-15 12292 Humboldt Big Lagoon, along Highway 101 near the mouth of Tom Creek. 3 Comment
  UC672921  Rumex salicifolius var. transitorius Joseph P. Tracy 1936-6-3 14855 Humboldt Willow Creek Trinity River Valley 152 Comment
  HSC63070  Ruppia maritima David Wheeler 1979-5-31 146 Humboldt Arcata Bottoms, next to Mad River Slough Comment
  UC1100022  Ruppia maritima Malcolm A. Nobs and S. Galen Smith 1949-8-3 1182 Humboldt ca 4 mi s Eureka (on Highway 101, near mouth of Elk River) Comment
  HSC100868  Rytidosperma penicillatum J. P. Smith Sep 2005 12151 Humboldt Trinidad Head. 61 Comment
  UC1103257  Rytidosperma penicillatum Mrs. Wm. Grotzman 1941-6-16 Humboldt Bayside Golf Links 30 Comment
  POM318824  Salicornia Patricia Wilder 1968-8-21 4416 Humboldt Northern Coastal arm of Humboldt Bay, NW of Samoa, on E side of train tracks. 3 Comment
  OBI36622  Salicornia pacifica David J. Keil 1983-7-2 17297 Humboldt Humboldt Bay salt marsh at Arcata Corp Yard Comment
  JEPS93177  Salicornia virginica Margriet Wetherwax and Kevin Downing 1993-8-9 2456 Humboldt just n of Eureka (on e side of Humboldt Bay, s side of Eureka Slough, near Bayside Road and Myrtle, just past Pigeon Point); Humboldt Bay, Eureka Slough 5 Comment
  CAS-BOT-BC129895  Salix bonplandiana Joseph P. Tracy 1933-6-9 12528 Humboldt Along Eel River - Northern Coast Ranges 30 Comment
  CAS-BOT-BC129896  Salix bonplandiana Joseph P. Tracy 1932-4-23 9835 Humboldt South Fork of Eel River, between Miranda and Redway - North Coast Ranges 91 Comment
  UC490574  Salix exigua var. hindsiana Joseph P. Tracy 1932-7-31 10289 Humboldt along Eel R. from S. Fork to Scotia (mouth of Larrabee Creek); Northern Coast Ranges 60 Comment
  CAS-BOT-BC107702  Salix hookeriana Harold E. Parks 1931-5-12 956 Humboldt Samoa, Humboldt Bay Comment
  CAS-BOT-BC107703  Salix hookeriana Harold E. Parks 1931-5-12 952 Humboldt Samoa, Humboldt Bay Comment
  CAS-BOT-BC107708  Salix hookeriana Harold E. Parks 1931-3-24 912 Humboldt Fortuna, on banks of Eel River 10 Comment
  CAS-BOT-BC107727  Salix hookeriana Harold E. Parks 1931-3-24 915 a Humboldt Trinidad 90 Comment
  CAS-BOT-BC107767  Salix hookeriana Harold E. Parks; Carleton R. Ball; Joseph P. Tracy 1932-5-11 1207 Humboldt Little River Lagoon, 4 1/2 miles south of Trinidad Comment
  HSC19953  Salix hookeriana C. R. Ball, H. E. Parks, J. P. Tracy 1932-5-12 1246 Humboldt Van Duzen River at Blue Slide 91 Comment
  HSC19966  Salix hookeriana J. P. Tracy, H. E. Parks Apr 1923 7923 Humboldt Little River Lagoon Comment
  HSC40878  Salix hookeriana Linda M. Barker 1976-9-3 1693 Humboldt Lanphere-Christensen Dunes, 3 mi. W of Arcata. Comment
  HSC96366  Salix hookeriana Gordon Leppig 1999-7-9 1178 Humboldt Big Lagoon County Park; Big Lagoon Bog 3 Comment
  POM106778  Salix hookeriana Marcus E. Jones 1924-4-26 s.n. Humboldt Eureka. Comment
  POM219565  Salix hookeriana H. E. Parks 1931-3-24 915 -a Humboldt Trinidad. 90 Comment
  RSA178540  Salix hookeriana Joseph P. Tracy 1950-9-10 19366 Humboldt On foothills of Cape Ridge. 0.5 mile S of town. 1 mile inland from Cape Mendocino. 61 Comment
  UC1196549  Salix hookeriana Joseph P. Tracy 1943-11-28 17453 Humboldt Alton to Fortuna (Eel R.); Eel R. 15 Comment
  UC1225773  Salix hookeriana Joseph P. Tracy 1948-4-4 17960 Humboldt sand dunes near Samoa; Humboldt Bay 6 Comment
  UC1225776  Salix hookeriana Joseph P. Tracy 1948-4-4 17959 Humboldt sand dunes near Samoa; Humboldt Bay 6 Comment
  UC1225922  Salix hookeriana Joseph P. Tracy 1947-7-2 17758 Humboldt 6 mi s.e. Arcata (Fickle Hill); Fickle Hill 609 Comment
  UC146208  Salix hookeriana J. P. Tracy 1904-4-3 2011 Humboldt Immediate vicinity of Eureka 0 Comment
  UC275501  Salix hookeriana Joseph P. Tracy 1925-11-15 7314 Humboldt lowlands at foot of Table Bluff (near Salmon Creek); Northern Coast Ranges, Humboldt Bay 6 Comment
  UC469118  Salix hookeriana Joseph P. Tracy 1931-9-20 9686 Humboldt Little River Northern Coast Ranges (mouth, edge of sand dunes) 6 Comment
  UC469120  Salix hookeriana Joseph P. Tracy 1927-4-23 7922 Humboldt Big Lagoon Northern Coast Ranges 6 Comment
  UC490432  Salix hookeriana Joseph P. Tracy 1932-5-10 9959 Humboldt Mattole R. near Petrolia; North Coast Region, Mattole R. 15 Comment
  UC504062  Salix hookeriana Jim Davis Apr 25 1933-Apr 27 1933 8 Humboldt Samoa Comment
  UC512078  Salix hookeriana Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-11 1226 Humboldt 1 mi n Samoa (pine barrens near coast, r.r right-of-way) Comment
  UC519341  Salix hookeriana Joseph P. Tracy 1933-7-20 12808 Humboldt near Blue Lake (on gravel bar); Northern Coast Region, Mad River 15 Comment
  POM219559  Salix hookeriana var. tomentosa H. E. Parks 1931-3-26 905 Humboldt Alton on Van Duzen River. 15 Comment
  JEPS14791  Salix jepsonii Joseph P. Tracy 1933-7-16 12773 Humboldt meadow at McKay Camp S. Fork Mt.; Northern Coast Ranges 1676 Comment
  SD1012  Salix laevigata Mrs. H. P. Bracelin 1931-5-1 272 Humboldt Sylvandale, between Miranda and Myers, South Fork of Eel River Comment
  UC519388  Salix laevigata Joseph P. Tracy 1933-6-9 12529 Humboldt Shively Northern Coast Ranges, Shively 30 Comment
  CAS-BOT-BC125227  Salix lasiandra var. lasiandra Harold E. Parks 1931-3-24 0911 Humboldt Fortuna, on banks of Eel River 10 Comment
  CAS-BOT-BC107586  Salix lasiolepis Joseph P. Tracy; Carleton R. Ball; Harold E. Parks 1932-5-17 1317 Humboldt On banks of Redwood Creek, at Berry's, on Trinity Highway 274 Comment
  CAS-BOT-BC107647  Salix lasiolepis Joseph P. Tracy 1932-10-8 10865 Humboldt Berry's Mt. on Trinity Highway 762 Comment
  HSC20014  Salix lasiolepis H. E. Parks 1931-8-25 1059 Humboldt Blue Slide, Van Duzen River 91 Comment
  JEPS12931  Salix lasiolepis Joseph P. Tracy 1931-5-31 9328 Humboldt Redwood Creek at Berry's; Northern Coast Ranges 274 Comment
  JEPS12949  Salix lasiolepis Joseph P. Tracy 1932-3-6 9775 Humboldt at Willow Creek Trinity River Valley; Northern Coast Ranges, Trinity River Valley 152 Comment
  JEPS14779  Salix lasiolepis Joseph P. Tracy 1933-4-2 10959 Humboldt on Trinity Hwy. Berry's Mt. (e of Redwood Creek); Northern Coast Ranges 762 Comment
  POM219355  Salix lasiolepis Joseph P. Tracy 1931-9-26 9695 Humboldt Redwood Creek, at Berry's 274 Comment
  UC1196627  Salix lasiolepis Joseph P. Tracy 1935-5-25 13890 Humboldt North Dobbyn Creek Dobbyn Creek 152 Comment
  UC469403  Salix lasiolepis Joseph P. Tracy 1931-9-20 9689 Humboldt near R.R. Station Trinidad; Northern Coast Region, Trinidad 60 Comment
  UC490464  Salix lasiolepis Joseph P. Tracy 1932-9-5 10766 Humboldt Mattole R. near Petrolia; North Coast Region, Mattole R. 15 Comment
  UC506381  Salix lasiolepis Joseph P. Tracy 1933-2-26 10913 Humboldt Miranda Northern Coast Ranges, South Fork of Eel River 121 Comment
  UC506385  Salix lasiolepis Joseph P. Tracy 1932-6-4 10130 Humboldt Bridgeville Northern Coast Ranges 228 Comment
  UC506400  Salix lasiolepis Joseph P. Tracy 1932-8-21 10358 Humboldt Three Cabins Northern Coast Ranges, Chaparral Mountain (lower western foothills of mt.) 457 Comment
  UC519345  Salix lasiolepis Joseph P. Tracy 1933-10-22 13102 Humboldt Lack Pond Trinity River Valley (opposite mouth of Willow Creek) 152 Comment
  CAS-BOT-BC107293  Salix lasiolepis var. bigelovii Carleton R. Ball; Harold E. Parks; Joseph P. Tracy 1932-5-12 01241 Humboldt floodplain of Van Duzen River at Blue Slide 91 Comment
  CHSC9553  Salix lucida subsp. lasiandra E. L. Smith 1971-4-6 923 Humboldt Ca. 3 mi s of Scotia, on Hwy 101. 60 Comment
  CAS-BOT-BC125621  Salix melanopsis Mrs. H. P. Bracelin 1931-5-2 284 Humboldt East of Redwood Highway, 6 km. south of Alton 20 Comment
  LA208934  Salix melanopsis Harold E. Parks; 1931-5-14 964 Humboldt Van Duzen River between Alton and Carlotta 15.0 Comment
  POM218958  Salix melanopsis H. P. Bracelin 1931-5-2 284 Humboldt E of Redwood Hwy, 6km S of Alton. 20 Comment
  POM220143  Salix melanopsis H. E. Parks, Joseph P. Tracy 1931-5-17 972 Humboldt Mouth of Willow Creek at Trinity River. 150 Comment
  SD909  Salix melanopsis Harold E. Parks 1931-5-14 960 Humboldt Van Duzen River between Alton and Carlotta 14 Comment
  UC198573  Salix melanopsis Joseph P. Tracy 1916-9-5 4776 Humboldt 4 mi. above mouth S. Fork Eel R.; Northern Coast Ranges, S. Fork Eel R. 60 Comment
  UC469445  Salix melanopsis Joseph P. Tracy 1931-10-3 9706 Humboldt Van Duzen R. Blue Slide; Northern Coast Ranges, , Blue Slide 91 Comment
  UC469458  Salix melanopsis Joseph P. Tracy 1931-9-19 9681 Humboldt Van Duzen R. Alton; Northern Coast Region, Van Duzen R. 30 Comment
  UC470453  Salix melanopsis Joseph P. Tracy 1931-9-7 9646 Humboldt Trinity R. Valley at Willow Creek; Northern Coast Ranges, Trinity R. Valley, Willow Creek 152 Comment
  UC481308  Salix melanopsis Harold E. Parks and Joseph P. Tracy 1931-5-17 973 Humboldt mouth of Willow Creek at Trinity R.; Willow Creek 150 Comment
  SEINET4855525  Salix parksiana Harold 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
  CAS-BOT-BC129159  Salix scouleriana Joseph P. Tracy 1937-3-21 15237 Humboldt Van Duzen River, near Grizzly Creek 91 Comment
  JEPS13087  Salix scouleriana Joseph P. Tracy 1937-2-21 15230 Humboldt Van Duzen R. near Grizzly Creek; Van Duzen R. 91 Comment
  POM280931  Salix scouleriana Lyman D. Benson 1929-7-15 1823 Humboldt Weott Ranger Station. Comment
  UC1173625  Salix scouleriana Joseph P. Tracy 1937-3-21 15238 Humboldt near Grizzly Creek Van Duzen R. 91 Comment
  UC1173627  Salix scouleriana Joseph P. Tracy 1936-2-2 14766 Humboldt vicinity of Carlotta 30 Comment
  UC1196700  Salix scouleriana Joseph P. Tracy 1912-2-25 3558 Humboldt at Eureka Northern Coast Region, Eureka 0 Comment
  UC470447  Salix scouleriana Joseph P. Tracy Jul 16 1930-Jul 19 1930 9095 Humboldt forest near McKay Camp (S. Fork Mt.); Northern Coast Ranges, S. Fork Mt. 1676 Comment
  UC481353  Salix scouleriana Harold E. Parks 1931-5-12 955 a Humboldt pine barrens Samoa; Humboldt Bay, Samoa Comment
  UC506348  Salix scouleriana Joseph P. Tracy 1933-3-12 10921 Humboldt Ferndale Northern Coast Ranges, Ferndale 30 Comment
  UC506351  Salix scouleriana Joseph P. Tracy 1933-4-2 10956 Humboldt Willow Creek Canyon; Northern Coast Ranges, Willow Creek Canyon 304 Comment
  POM220146  Salix sessilifolia H. E. Parks, Joseph P. Tracy 1931-5-17 967 Humboldt Mouth of Willow Creek at Trinity River. 150 Comment
  HSC90380  Salix sitchensis Jean Hanson 1980-3-8 4 Humboldt Indian (Gunther) Island, Humboldt Bay, Eureka, W end of island Comment
  HSC90746  Salix sitchensis Jean Hanson 1980-3-8 23 Humboldt Indian (Gunther) Island, Humboldt Bay, Eureka, W end of island Comment
  HSC96573  Salix sitchensis Gordon Leppig 2003-2-20 1808 Humboldt Eureka Slough, Cooper Gulch 5 Comment
  HSC96588  Salix sitchensis Gordon Leppig 2003-2-22 1817 Humboldt Mad River Beach, near parking lot 3 Comment
  UC1196722  Salix sitchensis Joseph P. Tracy 1923-1-21 6138 Humboldt along Van Duzen R. Carlotta; Northern Coast Ranges, Van Duzen R. 30 Comment
  UC1280856  Salix sitchensis H. E. McMinn 1934-6-22 3707 Humboldt Sea Cliff n. of Eureka Comment
  UC1356339  Salix sitchensis Theodore J. Crovello 1964-6-24 579 Humboldt 2.5 mi. s. of turnoff from U.S. 101 to Prairie Creek Redwood State Park (along Lost Man Creek 100 yds. w. of junction with U.S. 101); Lost Man Creek Comment
  UC1713724  Salix sitchensis Joseph P. Tracy 1905-11-5 2398 Humboldt immediate vicinity of Eureka 0 Comment
  UC302154  Salix sitchensis Joseph P. Tracy 1926-2-21 7364 Humboldt on Van Duzen R. Blue Slide; Northern Coast Ranges, Van Duzen R., Blue Slide 91 Comment
  UC481383  Salix sitchensis Harold E. Parks 1931-3-26 908 Humboldt Van Duzen R. Alton; , Alton 15 Comment
  UC490492  Salix sitchensis Joseph P. Tracy 1932-8-27 10749 Humboldt on Van Duzen R. Blue Slide; Northern Coast Ranges, Van Duzen R., Blue Slide 91 Comment
  JEPS86686  Sambucus mexicana L. R. Heckard with T. I. Chuang 1990-7-15 6768 Humboldt South Fork Mountain Rd. ca 11 mi n Hwy 36 (near Mad River jct.) 1740 Comment
  UCR3517  Sambucus racemosa David Whistler, H. M. Whistler 1964-7-31 640801- 01 Humboldt North Coast, 0.2 mi. south of Prairie Creek Redwoods State Park, along US Hwy 101, and Prairie Creek [Camp Rd.?] 10 Comment
  SEINET3103511  Sambucus racemosa var. racemosa Steve Selva, Rodger Jensen 1974-8-28 99 Humboldt Redwood forest behind Humboldt State University, Arcata. Comment
  UC1225816  Sambucus racemosa var. racemosa Joseph P. Tracy 1947-8-24 17912 Humboldt e Box Camp; Trinity Summit 1676 Comment
  HSC104438  Sanguisorba officinalis J. Martin, Bianca Hayashi, Cheri Sanville 2012-8-28 Humboldt Northern end of Christmas Prairie Lake Comment
  HSC59088  Sanicula arctopoides Clark L. Miller 1979-5-9 3 Humboldt Samoa Dunes W of Samoa Blvd. Comment
  HSC62749  Sanicula arctopoides J. M. DiTomaso 1979-4-21 897 Humboldt Cliffs above College Cove, Elks Head, Trinidad Comment
  HSC21611  Sanicula arctopoides R. D. Modafferi 1965-3-13 16 Humboldt 1 mi. N of Trinidad on Trinity St. 305 Comment
  HSC21615  Sanicula arctopoides R. T. Forester 1963-3-13 22 Humboldt 1/2 mi. N of Fairhaven on Samoa Rd. Comment
  HSC99378  Sanicula bipinnata K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-6-24 27 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
  HSC21626  Sanicula bipinnatifida D. E. Anderson 1962-5-1 2194 Humboldt 1 mi. E of junction of Redwood Creek road and road to Hoopa Comment
  OBI36668  Sanicula crassicaulis David J. Keil 1983-7-2 17341 Humboldt 2.8 mi S of SR 299 along Titlow Hill rd, SW of Willow crk. Comment
  RSA254741  Sanicula crassicaulis Thomas W. Nelson, James Nelson 1973-5-28 943 Humboldt McKeown Ranch north of Dinsmore. Comment
  RSA183595  Sanicula crassicaulis C. F. Zeillemaker 1964-4-7 64 -A-3 Humboldt Three miles southwest of Samoa on Samoa Peninsula at US Coast Guard Station. 3 Comment
  UC1515012  Sanicula laciniata Bolander June 1867 6522 Humboldt Mattole River Comment
  UC1197088  Sanicula laciniata Joseph P. Tracy 1936-3-8 14776 Humboldt along South Fork of Eel River, Miranda South Fork Eel River; , Miranda 121 Comment
  UC1565803  Sanicula tuberosa R. Spellenberg 1990-7-9 10227 Humboldt 14 air mi sw of Burnt Ranch (20.5 mi s of California Hwy 299 and Berry Summit on USFS Rd 1, on Pilot Ridge, extreme e edge of Humboldt County); Pilot Ridge 1371 Comment
  HSC101026  Sanicula tuberosa Jenny Moore 2007-6-14 29 Humboldt Pilot Creek Watershed, west of South Fork Mountain, Dan East Trail (5E14). 976 Comment
  UC668103  Saponaria officinalis Joseph P. Tracy 1929-7-21 8644 Humboldt Trinity River Valley at Willow Creek; Trinity River Valley at Willow Creek 152 Comment
  UC562449  Sarcodes sanguinea Joseph P. Tracy Jul 16-19 1930 8943 Humboldt South Fork Mountain, near McKay Camp 1676 Comment
  UC416709  Satureja douglasii Mrs. M. H. Manning 1900-1 Humboldt near Hupa Comment
  UC556333  Satureja douglasii Mrs. Emanuel Fritz 1935-1 Humboldt between Miranda and Dyerville (along Redwood Highway) Comment
  UC1198879  Saxifraga californica Joseph P. Tracy 1927-4-2 7882 Humboldt facing South Fork Eel River ( Phillipsville); Northern Coast Ranges, Phillipsville 121 Comment
  HSC102082  Saxifraga ferruginea M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 984 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  HSC90687  Schoenoplectus americanus Gail Newton 1982-5-31 3562 Humboldt Elk River Wildlife Area, Eureka Comment
  SEINET3913367  Schoenoplectus pungens var. badius J. D. Ackerman 1975-6-10 465 Humboldt About 1 mi. N of Samoa Bridge turnoff from Samoa Blvd., S of Manila. Humboldt Bay.; 0 Comment
  UC1100781  Scirpus cernuus Malcolm A. Nobs, S. Galen Smith 1949-8-3 1174 Humboldt salt marshes around Fields Landing; around Fields Landing Comment
  CDA39126  Scirpus maritimus Gordon Leppig 1998-6-25 851 Humboldt Route 101, mile marker 81.60 Comment
  HSC58796  Scirpus microcarpus Gilbert Muth 1979-7-31 11522 Humboldt Near Tish Tang A Tang Creek, S Fork, close to the town of Hoopa 1417 Comment
  CHSC2305  Scoliopus bigelovii V. Holt 1933-4-10 Humboldt Comment
  UC1103492  Scoliopus bigelovii Joseph P. Tracy 1936-4-26 14808 Humboldt Kneeland Prairie 762 Comment
  HSC92543  Scoliopus bigelovii S. Morrissette, J. Williams, K. Kopper 1994-3-28 5 Humboldt On Lost Coast Trail, 2.25 mi. S of Bear Harbor Camp in J. Smeaton Chase Grove Comment
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Mar 9 2013
  UC1197795  Scoliopus bigelovii Joseph P. Tracy 1905-4-2 2156 Humboldt on Mad River near Glendale (Humboldt Bay Region); Northern Coast Region, , Mad R. 0 Comment
  CDA41981  Scrophularia californica T. C. Fuller 1961-9-28 7058 Humboldt 1.5 miles south of Samoa. 0 Comment
  RSA425151  Scrophularia californica Christopher Davidson 1973-5-29 2202 Humboldt 2 miles S of Carlotta on Hwy 36 61 Comment
  JEPS62919  Scutellaria antirrhinoides W. L. Jepson 1902-7-1 1969 Humboldt near Berrys Ranch (Redwood Creek, Expedition from Ukiah to the Hupa Indian Reservation); Redwood Creek Comment
  UCD125672  Scutellaria antirrhinoides John M. Tucker 1948-9-3 1854 Humboldt On ridge between Horse and Grouse Mountains. 1463 Comment
  HSC25984  Scutellaria californica Thomas W. Nelson 1970-9-3 228 Humboldt Mad River. Comment
  UC154010  Scutellaria tuberosa Joseph P. Tracy Jul 27 1908-Jul 30 1908 2717 Humboldt opposite Buck Mountain (Valley of Van Duzen River); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  HSC57960  Sedum divergens G. L. Clifton, Griswold 1979-7-31 11660 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1719 Comment
  HSC70891  Sedum laxum subsp. heckneri Gail Newton 1980-7-23 1707 Humboldt Near Packsaddle Ridge 1463 Comment
  HSC74194  Sedum laxum subsp. heckneri M. A. Baker 1980-7-24 3198 Humboldt Near Orleans Mtn. 1625 Comment
  HSC79263  Sedum laxum subsp. heckneri D. K. Imper 1983-6-28 Humboldt Six Rivers National Forest, Trinity River Canyon, 2 mi. S of Weitchpec Comment
  CAS-BOT-BC64703  Sedum oregonense Doris K. Kildale 1925-8-17 1221 Humboldt Trinity Summit 1828 Comment
  CAS-BOT-BC64750  Sedum oregonense Henry M. Pollard 1948-7-31 s.n. Humboldt Orleans Mt. 1828 Comment
  HSC98588  Sedum radiatum Cara Witte 2008-7-16 916 Humboldt Board Camp Mountain. Forest Service Road 4N38. 1/2 mile south of intersection with National Forest 1. 1409 Comment
  HSC98691  Sedum radiatum Cara Witte 2008-7-7 837 Humboldt Horse Mountain Botanical Area. 6N38. 1 mile southeast of Horse Mountain Mine. 1312 Comment
  HSC96071  Sedum spathulifolium J. McIntire, S. Lyon 2005-6-10 8 Humboldt 1.4 mi. S of Hwy. 299 on Titlow Hill Rd. 945 Comment
  CAS-BOT-BC62179  Selaginella oregana Joseph P. Tracy 1933-5-18 12196 Humboldt Mad River, near Blue Lake 15 Comment
  CAS-BOT-BC62182  Selaginella oregana Mrs. A. W. Kildale 1925-1-26 s.n. Humboldt Hungry Hollows, 5-6 mi east of Korbel Comment
  JEPS19067  Selaginella oregana Joseph P. Tracy 1933-11-26 13124 Humboldt Kneeland Prairie; Northern Coast Ranges 762 Comment
  HSC57419  Senecio integerrimus G. L. Clifton, Griswold 1979-7-26 10182 Humboldt Near Salmon Mtn., close to the town of Forks of Salmon 2058 Comment
  HSC6120  Senecio integerrimus var. major D. E. Anderson 1965-5-1 3571 Humboldt Along Bluff Creek road about 2.5 mi. from its junction with Hwy. 96 Comment
  SBBG8070  Senecio minimus H. and M. Dearing 1939-6-23 3697 Humboldt 12 mi E of Arcata Comment
  UC1199235  Senecio sylvaticus Joseph P. Tracy 1934-8-31 13652 Humboldt along road through woods Kneeland Prairie Kneeland Prairie 762 Comment
  HSC6131  Senecio vulgaris H. E. Parks, S. T. Parks Jun 1943 24234 Humboldt Spruce Cove, Trinidad 61 Comment
  UC1199237  Senecio vulgaris Joseph P. Tracy 1918-4-21 4880 Humboldt on old Kneeland Prairie Road near Newell's Camp (around Humboldt Bay); Northern Coast Ranges, around Humboldt Bay 304 Comment
  HSC12561  Senecio vulgaris D. La Conte 1970-11-7 10 Humboldt Comment
  MACF022873  Sequoia sempervirens Trudy R. Ericson 1978-9-3 964 Humboldt 3 mi. east of Carlotta on St. 36 60 Comment
  SDSU2018  Sequoia sempervirens Wayne A. Bemis 1963-11-29 245 Humboldt 1289 D St, Arcata. 55 Comment
  SEINET6727392  Sequoia sempervirens P. Lehenbauer 1854 Humboldt Near Eureka Comment
  POM182755  Sequoia sempervirens A. L. Bolton 1904-11-12 s.n. Humboldt Willits Comment
  SEINET10612372  Sequoia sempervirens Joseph P. Tracy 1940-10-17 Tracy 16770 Humboldt Dyerville 49 Comment
  RSA43681  Sherardia arvensis H. M. Pollard 1948-7-18 s.n. Humboldt Near Orleans. Comment
  POM208991  Sidalcea diploscypha Lincoln Constance 1934-5-23 613 Humboldt Look Prairie, Bull Creek Watershed, Humboldt Redwood Park. 366 Comment
  UC1121977  Sidalcea malachroides R. Stahelin 1933-5-15 19520 Humboldt T. P. L. Co. Eureka Quad. (Freshwater) Comment
  UC35225  Sidalcea malachroides Chestnut and Drew 1888-7-8 Humboldt near Arcata; near Arcata Comment
  CAS-BOT-BC213157  Sidalcea oregana subsp. eximia Joseph P. Tracy 1937-7-16 15432 Humboldt Dow's Prairie 60 Comment
  POM62156  Sidalcea oregana subsp. eximia Joseph P. Tracy 1917-9-1 4831 Humboldt Murphy Meadow, Bald Mountain 1067 Comment
  UC668141  Sidalcea oregana subsp. eximia Joseph P. Tracy 1937-7-16 15432 Humboldt Dow's Prairie 60 Comment
  HSC57901  Sidalcea oregana subsp. spicata Gilbert Muth 1979-7-31 11492 Humboldt Near Tish Tang A Tang Creek, S Fork, close to the town of Hoopa 1417 Comment
  CDA18218  Silene californica G. D. Barbe, T. C. Fuller 1974-6-17 1846 Humboldt North Coast Ranges; Shelter Cove, Upper Pacific Drive, at Sea View Rd. 91 Comment
  POM118650  Silene californica Marcus E. Jones 1924-4-25 s.n. Humboldt Garberville Comment
  RSA46893  Silene gallica Doris K. Kildale 1927-5-15 3166 Humboldt Cape Mendocino Comment
  CAS-BOT-BC181229  Silene hookeri subsp. bolanderi H. E. Parks; J. P. Tracy 1930-5-25 0791 Humboldt Laribee Valley 792 Comment
  CAS-BOT-BC389066  Silene laciniata subsp. californica Eliz. Parsons Hawver 1915-6-1 s.n. Humboldt Carlotta Comment
  HSC57102  Silene laciniata subsp. californica Overton, Butler 1979-7-25 9834 Humboldt Near Ammon Creek, close to the town of Willow Creek. 671 Comment
  CAS-BOT-BC389262  Silene lemmonii Joseph P. Tracy 1932-7-12 10452 Humboldt Trinity Summit. Near Corral Prairie 1584 Comment
  HSC89540  Sisymbrium officinale M. Roantree 1985-4-28 26 Humboldt E side of Trinidad Head, along dirt road Comment
  HSC23752  Sisyrinchium bellum Tim Baroni 1971-7-6 116 Humboldt 8 mi. S of Ferndale on Mattole Rd. Comment
  HSC45588  Sisyrinchium bellum Diane L. Reed 1978-5-27 142 Humboldt 0.3 mi. up Bair Rd. from Hwy. 299 Comment
  JEPS64287  Sisyrinchium bellum Lincoln Constance 1934-6-4 815 Humboldt Look Prairie and Bull Creek Road to Dyerville South Fork Eel River; Bull Creek Region, South Fork Eel River Comment
  RSA21200  Sisyrinchium californicum Carl B. Wolf 1937-8-10 9088 Humboldt Big Lagoon, bog at state park. 6 Comment
  HSC12029  Solanum americanum D. Santana 1970-11-2 94 Humboldt 3 mi. S of Trinidad on old Hwy. 1 Comment
  HSC89586  Solanum aviculare M. Roantree 1985-5-24 57 Humboldt W side of Trinidad Head, along trail Comment
  UC1332476  Solanum furcatum G. L. Stebbins Jr. 1941-5-26 130 Humboldt Trinidad Comment
  UC1196152  Solanum umbelliferum Joseph P. Tracy 1935-7-20 14325 Humboldt head of Devil's Hole (Trinity Summit); , Devil's Hole 1828 Comment
  RSA47108  Solanum umbelliferum Doris K. Kildale 1925-5-10 625 Humboldt Strongs Station Comment
  POM203673  Solidago canadensis subsp. elongata I. L. Wiggins 1932-7-25 5895 Humboldt Roadside near McKinleyville. Comment
  RSA46833  Solidago canadensis subsp. elongata Doris K. Kildale 1926-6-28 2180 Humboldt Big Lagoon Bluffs. Comment
  HSC36596  Solidago elongata J. O. Sawyer, Thomas W. Nelson, Linda M. Barker 1975-9-4 1306 Humboldt Megwill Point on Elkhead, N of Trinidad in Trinidad State Beach 15 Comment
  HSC6183  Solidago elongata William J. Ferlatte, B. D. Rogers 1966-8-15 3131 Humboldt North Bank Rd., 2 mi. N of Arcata Comment
  HSC99541  Solidago elongata K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-8-10 206 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  JEPS32395  Solidago elongata Lincoln Constance 1934-6-12 867 Humboldt n bank South Fork Eel River (Bull Creek Road, Dyerville); n bank South Fork Eel River, Bull Creek Region, Dyerville Comment
  UC36246  Solidago elongata C. C. Marshall 1886-1 Humboldt Comment
  RSA167399  Solidago spathulata Joseph P. Tracy 1948-9-26 18226 Humboldt Fickle Hill, six miles southeast of Arcata. 610 Comment
  RSA24389  Solidago spathulata C. B. Wolf 1941-2-22 9916 Humboldt Little River Beach State Park (north of Arcata). 8 Comment
  UC1223174  Solidago spathulata Joseph P. Tracy 1948-9-26 18226 Humboldt 6 mi se Arcata (Fickle Hill); Fickle Hill 609 Comment
  UCR122358  Solidago spathulata var. spathulata George K. Helmkamp, E. A. Helmkamp 2001-7-8 7023 Humboldt North Coast, Samoa Peninsula, 2.6 miles south of CA Hwy 255 bridge across Humboldt Bay 15 Comment
  CAS-BOT-BC374426  Sonchus asper Joseph P. Tracy 1936-8-24 15177 Humboldt Fickle Hill, 6 miles Southeast of Arcata 609 Comment
  HSC67039  Sonchus asper J. P. Smith 1971-10-9 5045 Humboldt Banks and flood plain of the Mad River above the fish hatchery. Comment
  HSC67888  Sonchus oleraceus J. P. Smith 1973-5-26 6862 Humboldt Scotia Bluffs along the Eel River near Rio Dell Comment
  UC1198767  Sorbus californica Joseph P. Tracy 1932-7-12 10469 Humboldt head of Brett Hole Trinity Summit; Klamath Mountains 1828 Comment
  HSC102103  Sorbus sitchensis var. sitchensis M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 1006 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  UC526834  Sorghum halepense Joseph P. Tracy 1925-9-6 7263 Humboldt near the S. Fork Trinity R. Valley; Northern Coast Ranges, Trinity R. Valley 182 Comment
  CAS-BOT-BC389920  Spergula arvensis Doris K. Kildale 1925-12-6 1820 Humboldt Orick, near mouth of Redwood Creek Comment
  HSC4234  Spergula arvensis D. E. Anderson 1961-9-13 1823 Humboldt Comment
  HSC77898  Spergula arvensis R. D. Modafferi 1965-3-14 8 Humboldt 1.3 mi. S of Trinidad on old Hwy. 101 305 Comment
  UC161005  Spergula arvensis subsp. arvensis Joseph P. Tracy 1909-6-6 2983 Humboldt at Eureka Northern Coast Region, Eureka 0 Comment
  RSA0097847  Spergularia macrotheca A. A. Heller 1923-7-9 13780 Humboldt Near Arcata. Comment
  CAS-BOT-BC390611  Spergularia rubra Joseph P. Tracy 1936-6-3 14850 Humboldt Trinity River Valley, at Willow Creek 152 Comment
  HSC16658  Spiranthes romanzoffiana J. Wendell Howe 1934-7-20 1311 Humboldt Arcata Comment
  HSC35344  Spiranthes romanzoffiana A. Montalvo, J. D. Ackerman 1975-8-22 643 Humboldt N of College Cove, Trinidad State Beach Park Comment
  RSA286353  Spiranthes romanzoffiana Robert F. Thorne 1974-7-29 45085 Humboldt Samoa Dunes: between Humboldt Bay and Pacific Ocean. Comment
  HSC100152  Spirodela punctata M. A. Ericksen 1979-5-29 308 Humboldt Northern-most of Clam Beach ponds Comment
  UC1239726  Stachys ajugoides var. ajugoides Joseph P. Tracy 1942-6-2 17093 Humboldt 1 mi e Alton 30 Comment
  UC577327  Stachys ajugoides var. rigida Joseph P. Tracy 1936-6-8 14874 Humboldt Trinidad 3 Comment
  UCLA70888  Stachys ajugoides var. rigida C. Epling, Wm. Robison 1935-7-25 Humboldt Dyerville Comment
  UCSB5856  Stachys albens Keator, Glenn 1958-6-28 Humboldt Dyerville road; at middle altitudes Comment
  UC1239723  Stachys arvensis H. B. Tucker 1935-3-20 Humboldt Moron Ranch Arcata Bottom 9 Comment
  HSC59665  Stachys chamissonis George Kirn 1977-9-10 Humboldt Eureka, Cooper Gulch S of 14th St. 20 Comment
  SD61050  Stachys rigida var. rigida Darley F. Howe 1964-8-7 3943 Humboldt 8.2 miles from Highway 96 on Mill Creek Road. Hoopa Valley. 1067 Comment
  UC161057  Stellaria borealis subsp. sitchana Joseph P. Tracy 1900-5-22 795 Humboldt Eureka; Northern Coast Region 0 Comment
  UCD99372  Stellaria media Linda M. Barker 1976-4-30 1396 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  UC1197797  Stenanthium occidentale Joseph P. Tracy 1948-9-5 18172 Humboldt ne of Hawkins Bar; Trinity Summit Range, Happy Camp Mountain 1280 Comment
  CAS-BOT-BC516465  Stenanthium occidentale Joseph P. Tracy 1937-7-25 15558 Humboldt Happy Camp Mountain, in Trinity Fummit range, northeast of Hawkins Bar 1280 Comment
  HSC32547  Stephanomeria virgata Thomas W. Nelson 1973-9-3 1122 Humboldt McKeown Ranch N of Dinsmore Comment
  HSC6230  Stephanomeria virgata John Warner Hosking 1968-10-10 Humboldt Hwy. 299, 30 mi. W of Willow Creek Comment
  HSC73047  Stipa occidentalis var. californica M. A. Baker 1980-7-15 2943 Humboldt Near Whiting Ridge. 1341 Comment
  HSC58058  Streptanthus tortuosus G. L. Clifton, Terry Griswold 1979-8-1 11928 Humboldt Near Mill Creek Lakes, close to the town of Hoopa. 1692 Comment
  HSC74305  Streptanthus tortuosus M. A. Baker 1980-7-24 3205 Humboldt Near Orleans Mtn. 1625 Comment
  HSC99005  Streptanthus tortuosus var. tortuosus Cara Witte 2008-6-15 730 Humboldt Coldspring Camp. 1460 Comment
  HSC58336  Streptopus amplexifolius Overton, Butler 1979-8-2 12644 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  CAS-BOT-BC519056  Streptopus amplexifolius Greg de Nevers 2001-4-19 12257 Humboldt Fern Canyon, Prairie Creek, Redwoods State Park 91 Comment
  UC22723  Swertia albicaulis var. nitida J. Burtt Davy 1899-6-21 5737 Humboldt e slope Hoopa Mt. (on the borders of Supply Creek); North Coast Ranges, , Supply Creek Comment
  HSC34130  Swertia radiata J. O. Sawyer 1970-6-24 2285 Humboldt Near Waterdog Lakes 1860 Comment
  CAS-BOT-BC269577  Symphoricarpos albus var. laevigatus H. E. McMinn 1922-8-5 349 Humboldt Along Van Duzen River Comment
  HSC32242  Symphoricarpos mollis J. O. Sawyer 1970-6-24 2236 Humboldt Ridge on Big Hill Rd., E of Hoopa 1189 Comment
  UC1239537  Symphoricarpos mollis Joseph P. Tracy 1908-6 2782 Humboldt nw slope Buck Mountain; Northern Coast Ranges 914 Comment
  UC1239540  Symphoricarpos mollis Joseph P. Tracy 1948-9-5 18188 Humboldt 3 mi s Grizzly Camp; Trinity Summit 1524 Comment
  HSC58385  Symphyotrichum bracteolatum Terry Griswold 1979-7-25 10923 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon 1784 Comment
  HSC58821  Symphyotrichum bracteolatum G. L. Clifton, Griswold 1979-8-2 12212 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  HSC75958  Symphyotrichum bracteolatum Overton, Butler 1979-7-24 9740 Humboldt Near Black Rock, close to the town of Willow Creek. 1554 Comment
  HSC39446  Symphyotrichum chilense Linda M. Barker 1976-8-2 1676 Humboldt Lanphere-Christensen Dunes; 3 mi. W of Arcata Comment
  CAS-BOT-BC99161  Symphyotrichum chilense E. K. Balls 1950-7-17 14927 Humboldt Redwood Hwy, 4 mi. north of Loleta 7 Comment
  HSC96486  Symphyotrichum chilense Gordon Leppig 1997-8-13 631 Humboldt Big Lagoon County Park 3 Comment
  SEINET11071706 Image available Symphytum asperum Mrs. C. M. Wilder 1934-1 Humboldt Near Alton. At the Rolla Bryant place. Comment
  HSC21151  Synthyris reniformis D. E. Anderson 1963-3-23 2399 Humboldt Bald Mtn. Rd. Comment
  HSC21155  Synthyris reniformis D. E. Anderson 1962-2-10 1917 Humboldt 0.5 mi. E of Big Lagoon Elementary School along abandoned stretch of Hwy. 101 Comment
  UC1198059  Synthyris reniformis Joseph P. Tracy 1909-5-16 2969 Humboldt Coast bluffs 3 mi n Trinidad; Northern Coast Ranges 30 Comment
  UC902237  Synthyris reniformis Joseph P. Tracy 1941-3-26 16812 1/2 Humboldt Willow Creek Canyon, along Trinity Highway Willow Creek Canyon 457 Comment
  RSA21021  Tanacetum vulgare C. B. Wolf 1937-9-12 9330 Humboldt Big Lagoon, S side along Redwood Hwy. 6 Comment
  UC1239514  Taraxacum officinale J. P. Tracy 1901-1-13 984 Humboldt immediate vicinity Eureka 0 Comment
  UC1197329  Tauschia kelloggii Joseph P. Tracy 1929-7-4 8632 Humboldt French Camp Ridge 1066 Comment
  UC642291  Tauschia kelloggii Joseph P. Tracy 1936-6-10 14933 Humboldt mountain slopes w mouth South Fork of Trinity River; mountain slopes w of mouth South Fork of Trinity River 457 Comment
  HSC1590  Taxus brevifolia J. P. Tracy 1927-3-27 7866 Humboldt Willow Creek Canyon 762 Comment
  HSC1597  Taxus brevifolia Francis Winter 1960-5-7 Humboldt Pine Ridge Summit, Hoopa Indian Reservation 671 Comment
  UC54777  Taxus brevifolia Joseph Burtt Davy and Walter C. Blasdale Jun 21 1899-Jun 23 1899 5819 Humboldt Tinity Summit North Coast Ranges, Trinity Summit Comment
  SJSU685  Taxus brevifolia A. W. Jacobs 1941-6-15 Humboldt border of road (Hwy 299) between Blue Lake & Redwood Creek Comment
  HSC20433  Tellima grandiflora Elrid H. Spinas 1948-6-16 63 Humboldt Horse Mtn. Comment
  HSC53851  Tellima grandiflora Griswold, Butler 1979-7-10 6316 Humboldt Near Board Camp Mtn., close to the town of Willow Creek 1372 Comment
  UC1198891  Tellima grandiflora Joseph P. Tracy 1949-6-6 18311 Humboldt ne of Hawkins Bar (Happy Camp Mountain); Trinity Summit Range, Happy Camp Mountain 1280 Comment
  HSC63225  Tellima grandiflora M. A. Baker 1979-5-6 483 Humboldt 2 km. S of Weitchpec Comment
  HSC93510  Tellima grandiflora Gordon Leppig, Sylvia Leppig, Kai Neander 1998-5-6 745 Humboldt Hwy. 101 road cut overlooking Big Lagoon 40 Comment
  RSA298355  Tellima grandiflora Thomas W. Nelson 1977-6-15 3425 Humboldt Along Forest Rd 5N10 just N of jct with Rd 6N08. 1372 Comment
  UC1239774  Thelypteris nevadensis Joseph P. Tracy 1935-7-22 14124 Humboldt near Forks of Tish Tang-a Tang Creek Trinity Summit 1219 Comment
  SEINET6934811  Thermopsis macrophylla var. venosa Wanda P. Vestal, A. G. Vestal 1937-6-23 s.n. Humboldt West of top of grade down to Klamath River, southeast of Orick. Comment
  CAS-BOT-BC5391  Thlaspi californicum Volney Rattan 1882-6-1 s.n. Humboldt at Kneeland Prairie Comment
  NY185794  Thlaspi californicum V. Rattan 06 1882 s.n. Humboldt This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  CAS-BOT-BC81310  Thuja plicata Carl B. Wolf 1930-10-25 1764 Humboldt 9 miles above Blue Lake along road to Willow Creek (Lord Ellis Road) 243 Comment
  CAS-BOT-BC81318  Thuja plicata Carl B. Wolf 1927-8-29 1192 Humboldt 7 mi. S. of Ferndale and Capetown, Bear River Ridge--Mt. Glen Comment
  CAS-BOT-BC81320  Thuja plicata Ira L. Wiggins 1955-7-31 13594 Humboldt Hillside 9 mi. E of Arcata along Highway 299 316 Comment
  RSA47094  Thuja plicata Doris K. Kildale 1926-8-28 2566 Humboldt Morrison gulch - Bear River ridge 412 Comment
  UC63991  Thuja plicata Mrs. M. H. Manning 1901-10-1 Humboldt Comment
  UCD134036  Thuja plicata Roman Gankin 1965-8-6 557 Humboldt On Matolle Road, 7.4 miles northeast of Capetown. Comment
  HSC45087  Thysanocarpus curvipes R. Sutherland 1978-4-23 28 .23478 Humboldt 640 Comment
  HSC6993  Thysanocarpus curvipes J. E. Lankila 1962-5-14 17 Humboldt W bank of river, 0.5 mi. S of Fernbridge Comment
  CAS-BOT-BC436904  Tiarella trifoliata var. unifoliata Mrs. E. C. Sutliffe 1927-6-1 s.n. Humboldt Bull Creek Comment
  RSA246667  Tiarella trifoliata var. unifoliata R. F. Thorne, Percy C. Everett 1965-8-5 35140 Humboldt Mt. Chamisal; Below summit. 534 Comment
  UCR124075  Tiarella trifoliata var. unifoliata George K. Helmkamp, E. A. Helmkamp 2001-7-8 6971 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
  JEPS49709  Tiarella trifoliata var. unifoliata W. L. Jepson 1927-7-3 12359 Humboldt near Dyerville (Bull Creek); South Fork Eel River, Bull Creek Comment
  UC154147  Tiarella trifoliata var. unifoliata Mrs. M. H. Manning 1901-7-31 322 Humboldt near Hupa (Eureka Trail); near Hupa, Eureka Trail Comment
  UC64644  Tiarella trifoliata var. unifoliata H. M. Hall 1899-9 Humboldt Redwood forests along Eel River; along Eel River Comment
  UC275557  Tofieldia occidentalis subsp. occidentalis Joseph P. Tracy 1924-7-4 6709 Humboldt Snow Camp Northern Coast Ranges 1371 Comment
  UC1173638  Tofieldia occidentalis subsp. occidentalis Joseph P. Tracy 1930-7-17 8993 Humboldt McKay Camp South Fork Mountain Comment
  CAS-BOT-BC447609  Tolmiea menziesii Volney Rattan 1883-6-1 s.n. Humboldt Humboldt County Comment
  POM332456  Torilis arvensis Thomas W. Nelson, Jane P. Nelson 1978-7-2 4387 Humboldt Along hwy 36 ca. 1 mile E of Grizzly Creek Comment
  HSC38892  Torilis arvensis J. P. Smith, Steve Selva 1970-6-14 Humboldt Along Hwy. 96 at Whitmore Creek 152 Comment
  HSC72099  Torilis arvensis J. P. Smith, L. Barker, J. Cole 1976-7-27 8948 Humboldt Berry Summit on abandoned hwy. Comment
  SDSU2311  Torilis arvensis D. F. Howe 1961-7-31 3100 Humboldt 6 miles south of Garberville on #101. 91 Comment
  UC183628  Torilis nodosa Joseph P. Tracy 1912-6-9 3683 Humboldt Alton 30 Comment
  CAS-BOT-BC169175  Toxicodendron diversilobum Volney Rattan 1878-1-1 s.n. Humboldt Undspecified Comment
  HSC86488  Tracyina rostrata Tom Duebendorfer 1988-6-14 881 Humboldt About 2 mi. E of confluence of Kekawaka Creek and the Eel River, N of Lauffer Ranch. 457 Comment
Read comments
May 18 2010
  HSC75391  Trautvetteria caroliniensis J. O. Sawyer, M. A. Ericksen 1980-7-18 3639 Humboldt Along FS Rd. 10N02, S of Middle Fork of Mill Creek Comment
  UC1225747  Trautvetteria caroliniensis var. occidentalis Joseph P. Tracy 1948-9-5 18169 Humboldt Trinity Summit Range, at Happy Camp Mountain Happy Camp Mountain; Trinity Summit Range, Happy Camp Mountain 1280 Comment
  UC604644  Trichostema laxum Joseph P. Tracy 1938-8-14 16119 Humboldt South Fork of Trinity River, mountain slopes W of mouth 304 Comment
  HSC95824  Trientalis latifolia Kevin Thomas 2004-4-26 16 Humboldt Jacoby Creek Rd. Comment
  RSA239714  Trientalis latifolia Larry E. DeBuhr 1973-4-23 985 Humboldt Richardson Grove Redwood State Park. Comment
  SEINET12157031  Trifolium albopurpureum J. P. Tracy 1948-1 17989 Humboldt W side of top of Spruce Grove Ridge near Harris Comment
  UC160920  Trifolium albopurpureum var. dichotomum Joseph P. Tracy 1906-7-4 2535 Humboldt near Hydesville (Yager Creek); Northern Coast Ranges 60 Comment
  UC1103431  Trifolium barbigerum Joseph P. Tracy and Ernest B. Babcock 1912-5-12 3636 Humboldt Eureka Northern Coast Ranges Comment
  UC1197494  Trifolium barbigerum J. P. Tracy 1910-5-22 3138 Humboldt immediate vicinity Eureka 0 Comment
  UC33445  Trifolium barbigerum Joseph Burtt Davy and Walter C. Blasdale 1899-5 5684 Humboldt Hoopa Mtn Comment
  HSC45121  Trifolium bifidum R. Sutherland 1978-5-19 17 .19578 Humboldt 183 Comment
  UC495643  Trifolium bifidum var. decipiens Joseph P. Tracy 1927-6-18 8186 Humboldt betw Petrolia and the ocean (hills); Northern Coast Ranges 152 Comment
  UC1197204  Trifolium ciliolatum Joseph P. Tracy 1911-7-11 3510 Humboldt Hoopa Valley Northern Coast Ranges 152 Comment
  SEINET6934955  Trifolium depauperatum var. amplectens Wanda P. Vestal, A. G. Vestal 1937-6-22 s.n. Humboldt Kneeland prairie, about 4 miles southeast of Kneeland. Comment
  UC165571  Trifolium depauperatum var. depauperatum Mrs. M. H. Manning 1902-4-27 Humboldt near Hupa Comment
  OBI78200  Trifolium dichotomum Joseph P. Tracy 1933-5-20 12234 Humboldt Mouth of Domingo Crk. Cape Mendocino, S of point of Cape 30 Comment
  CDA4294  Trifolium dubium G. D. Barbe, T. C. Fuller 1974-6-17 1837 Humboldt Sail Court, Shelter Cove. 0 Comment
  UCD108880  Trifolium dubium W. A. Williams 1951-6-1 s.n. Humboldt Humboldt County. Comment
  JEPS79999  Trifolium eriocephalum var. eriocephalum Joseph P. Tracy 1930-6-29 8821 Humboldt nw slope Buck Mtn (lower foothills); Northern Coast Ranges Comment
  UCD109057  Trifolium fucatum W. A. Williams 1951-6-1 s.n. Humboldt Humboldt County. Comment
  UC1197190  Trifolium gracilentum Joseph P. Tracy 1911-5-30 3194 Humboldt Bucksport Northern Coast Region, Humboldt Bay Comment
  HSC73705  Trifolium longipes M. A. Baker 1980-7-22 3116 Humboldt Near Grogan Hole. 1676 Comment
  HSC102067  Trifolium longipes subsp. hansenii M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 969 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  HSC39424  Trifolium longipes subsp. oreganum Thomas W. Nelson, Jane P. Nelson 1976-6-15 2711 Humboldt Along old trail from lookout to Blocksburg 1555 Comment
  UC1223331  Trifolium longipes var. oreganum Joseph P. Tracy 1933-7-11 12698 Humboldt between Horse Mt. and Grouse Mt. (near Clear Lake) Comment
  UC495660  Trifolium macraei Joseph P. Tracy 1927-6-8 8114 Humboldt Trinidad; Northern Coast Ranges, Trinidad 15 Comment
  CHSC35554  Trifolium microcephalum James P. Smith 1973-5-26 6870 Humboldt Scotia Bluffs along the Eel River near Rio Dell. Comment
  CDA28005  Trifolium microdon E. C. Whitney 1978-5-25 Humboldt Art Tooby property, Harris. 0 Comment
  HSC15147  Trifolium microdon J. W. Johnson 1962-5-10 1332 Humboldt Arcata, Christenson Farm on the Samoa Peninsula Comment
  UC1223349  Trifolium microdon Joseph P. Tracy 1950-6-18 18840 Humboldt 1 mi e Cape Mendocino (at roadside on top of ridge); Cape Ridge 304 Comment
  HSC45125  Trifolium obtusiflorum R. Sutherland 1978-6-1 4 .1678 Humboldt 213 Comment
  HSC89908  Trifolium repens Leonel Arguello 1989-7-7 Humboldt Lanphere-Christensen Dunes, 3 mi. W of Arcata, along the Saltmarsh trail by old cattle ramp. Comment
  UCD109391  Trifolium subterraneum R. Tofsrud 1949-7-1 s.n. Humboldt Talarook, Hydesville. Comment
  HSC45116  Trifolium variegatum R. Sutherland, R. Sutherland 1978-5-19 13 .19578 Humboldt 134 Comment
  UC1223530  Trifolium variegatum var. melananthum Joseph P. Tracy 15374 Humboldt opposite Willow Creek (same place as no. 15331 and 15331 1/2); Trinity River Valley Comment
  HSC97537  Trifolium willdenovii Ivy Watson 2008-9-28 25 Humboldt Beach N of river mouth, along small tributary E of sand dunes 4 Comment
  UC1197510  Trifolium willdenovii Joseph P. Tracy 1922-4-30 6033 Humboldt near Willow Creek; Northern Coast Ranges, Trinity River Valley 152 Comment
  HSC27894  Trifolium wormskioldii Clifton Raymond Chesbrough 1973-6-19 64 Humboldt 0.25 mi. from Harris and T St. on U St. Comment
  UC1223518  Trifolium wormskioldii Joseph P. Tracy 1938-7-11 16047 Humboldt Samoa Sand Dunes Comment
  UC1223524  Trifolium wormskioldii Joseph P. Tracy 1936-5-29 14828 Humboldt 4 mi e Orick; Grans Prairie 548 Comment
  UC495675  Trifolium wormskioldii Joseph P. Tracy 1927-7-17 8281 Humboldt Three Cabins Northern Coast Ranges, Chaparral Mtn 457 Comment
  RSA249526  Triglochin maritima Robert F. Thorne, Percy C. Everett 1965-8-9 35303 Humboldt Big Lagoon. 3 Comment
  RSA32656  Triglochin maritima Doris K. Kildale 1927-7-10 3740 Humboldt Big Lagoon Comment
  UCR121761  Triglochin maritima George K. Helmkamp, E. A. Helmkamp 2001-7-8 6995 Humboldt North Coast, north spit of Samoa Peninsula, 0.5 mi north of CA Hwy 255 bridge over Humboldt Bay 6 Comment
  UC1099938  Triglochin maritima Malcolm A. Nobs, S. Galen Smith 1949-8-11 1345 Humboldt on eastern side of Big Lagoon Big Lagoon Comment
  HSC65512  Trillium albidum M. A. Baker 1980-6-8 1909 Humboldt Near Buck Flat. 1554 Comment
  HSC75735  Trillium albidum Bill Copeland 1980-6-26 296 Humboldt Near Murphy Meadow 914 Comment
  SDSU19196  Trillium albidum Michael G. Simpson, Michael Mesler and Michael Mayer 2008-5-27 3006 Humboldt Six Rivers National Forest. From Hwy 299, take Titlow Hill Road (at Berry Summit) ca. 7.5 miles south, west 0.2 miles to Cold Spring. Ca. 0.2 mile south-southeast of Cold Spring. Ca. 3.3 aerial miles south-southeast of Horse Mtn. Radio Tower. 1416 Comment
  SEINET3991344  Trillium chloropetalum Unknown 1950-4-20 18615 Humboldt Buck Mountain, lower foothills of its N. W. slope, 2 mi W of Dinsmore's 762 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
  UC1197825  Trillium ovatum Joseph P. Tracy 1911-5-7 3184 Humboldt Kneeland Prairie Northern Coast Ranges, Kneeland Prairie 762 Comment
  UC30089  Trillium ovatum Harley P. Chandler June, 1901 1281 Humboldt Hupa Indian Reservation North Coast Ranges, Hupa Indian Reservation 304 Comment
  UCR275118  Trillium ovatum Charity A. Hartshorn 2016-5-14 28 Humboldt Arcata Community Forest 244 Comment
  UC1197827  Trillium ovatum Joseph P. Tracy 1912-3-3 3561 Humboldt at Eureka Eureka; Northern Coast Region 0 Comment
  UC176190  Trillium ovatum Joseph P. Tracy 1913-4-13 4034 Humboldt at Eureka Eureka; Northern Coast Region 0 Comment
  HSC99366  Trillium ovatum subsp. ovatum K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-6-24 15 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-BC521315  Trillium rivale Doris K. Kildale; L. B. Kildale 1930-5-24 9551 Humboldt Hoopa Valley 152 Comment
  CAS-BOT-BC521316  Trillium rivale L. B. Kildale 1930-6-1 9739 Humboldt Klamath River at Bluff Creek 152 Comment
  SEINET10906254  Triodanis biflora Chandler CHANDLER 1415 Humboldt Klamath River 427 Comment
  BLMAR604  Triphysaria pusilla Jennifer Wheeler 2011-4-1 604 Humboldt King range, growing on Mattole beach dunes Comment
  HSC70582  Triphysaria pusilla Sue Sweet 1981-4-30 548 Humboldt Lanphere-Christensen Dunes Preserve, along trail N of weather station Comment
  UC1222443  Triphysaria versicolor subsp. faucibarbata Joseph P. Tracy 1935-5-25 13851 Humboldt Fort Seward 106 Comment
  HSC104272  Triphysaria versicolor subsp. versicolor Samantha E. Andres 2016-5-4 6 Humboldt Along Jackson Ranch Rd., near the bridge; ~.25 mi. from Hwy. 255 intersection 3 Comment
  JEPS11165  Triphysaria versicolor subsp. versicolor J. P. Tracy 1944-5-14 17467 Humboldt Eureka Comment
  RSA10083  Trisetum canescens Joseph P. Tracy 1930-7-16 8916 Humboldt South Fork Mountain 1677 Comment
  RSA44448  Trisetum canescens Henry M. Pollard 1948-7-18 s.n. Humboldt Near Orleans. Comment
  HSC13410  Trisetum canescens D. C. Juve 1964-5-16 45 Humboldt 1 mi. N of Tish-tang Ranger Station on Hwy. 96. Comment
  SEINET5424014  Trisetum canescens J. B. Davy, W. C. Blasdale 5036 Humboldt Walkers Valley, hwy 25 Comment
  HSC98366  Triteleia bridgesii T. Jimerson, J. Pageau 1979-5-24 472 Humboldt Near Orleans 226 Comment
  UC15026  Triteleia bridgesii Harley P. Chandler June, 1901 1344 Humboldt Hupa Indian Reservation North Coast Ranges 152 Comment
  HSC3041  Triteleia hyacinthina Frances Oldridge 1946-1 Humboldt Kneeland Comment
  HSC3061  Triteleia laxa D. E. Anderson 1962-7-14 2251 Humboldt 2 mi. W of Kneeland Post Office Comment
  HSC18445  Tropaeolum majus Jana Kattenhorn 1970-10-24 134 Humboldt Arcata, HSU campus, S of Harpst St. Comment
  UCR6818  Tsuga heterophylla David Whistler, H. M. Whistler 1964-8-1 640801- 2 Humboldt Coast Range, US Hwy 299, 6 mi east of Blue Lake Comment
  RSA1092  Tsuga heterophylla E. R. Johnson 1928-8-26 1151 Humboldt On Arcata-Hoopa Road. Comment
  HSC62939  Umbellularia californica Michael Dalke 1979-4-14 54 Humboldt Richardson Grove State Park, Hwy. 101 152 Comment
  HSC95838  Umbellularia californica Kevin Thomas 2004-4-26 13 Humboldt Lord Ellis Summit along Titlow Hill Rd., rd. turnout Comment
  SEINET12102554  Umbellularia californica E. H. Graham 1931-1 6960 Humboldt Along highway near Garberville Comment
  UC582438  Uropappus lindleyi Joseph P. Tracy 1927-5-14 8008 Humboldt near South Fork; Trinity River Valley 182 Comment
  CAS-BOT-BC403928  Urtica dioica subsp. gracilis L. R. Abrams; R. Bacigalupi 1922-6-25 8278 Humboldt Big Lagoon south of Orick Comment
  HSC21672  Urtica dioica subsp. gracilis R. D. Zortman 1963-5-5 34 Humboldt 5 mi. NE of Arcata, S of the Mad River, off Warren Creek Rd. 91 Comment
  POM380627  Urtica dioica subsp. gracilis Lyman D. Benson 1929-7-12 1792 Humboldt Weott Ranger Station; S Fork Eel River. Comment
  POM106056  Urtica dioica subsp. holosericea Marcus E. Jones 1924-4-26 s.n. Humboldt Eureka. Comment
  UC1222619  Urtica dioica subsp. holosericea Joseph P. Tracy 1950-9-22 19369 Humboldt 8 mi below Orleans (near Slate Creek, Klamath River); Klamath River 121 Comment
  HSC102021  Vaccinium cespitosum M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-12 922 Humboldt Rustic Camp, northwest of Patterson Meadows 1512 Comment
  UC1197770  Vaccinium cespitosum J. P. Tracy 1896-4-29 2425 Humboldt immediate vicinity Eureka; , Ricks Prairie 0 Comment
  CHSC67763  Vaccinium ovatum Vernon H. Oswald 1997-2-12 8307 Humboldt North Coast of Calif. South end of Trinidad State Beach, town of Trinidad. 30 Comment
  HSC26397  Vaccinium ovatum T. O. Osborne 1970-9-16 31 Humboldt Trinidad Bay, Prisoner Rock Comment
  HSC7903  Vaccinium ovatum D. B. Bader 1963-2-17 26 Humboldt Second of the Clam Beach lagoons W of Hwy. 101 Comment
  HSC7909  Vaccinium ovatum C. B. Wolf 1927-8-27 1159 Humboldt Klamath River, 2 mi. below the mouth of the Salmon River Comment
  UC154183  Vaccinium ovatum Mrs. M. H. Manning May 1902 Humboldt near Hupa Comment
  UCD118079  Vaccinium ovatum Joseph M. DiTomaso 1976-3-28 349 Humboldt Arcata, beneath Redwood tree. Comment
  UCD118091  Vaccinium ovatum Gordon Leppig 1998-6-26 854 Humboldt McKinleyville, Rt. 101 @ Mad River Overlook. 24 Comment
  CAS-BOT-BC199409  Vaccinium parvifolium C. H. M. 1920-8-29 s.n. Humboldt Lower Eel River, near Pepperwood Comment
  UCR32119  Vaccinium parvifolium David J. Keil 1983-7-2 17329 Humboldt Horse Mountain Summit SW of Willow Creek 1509 Comment
  UC602512  Valeriana sitchensis subsp. scouleri Joseph P. Tracy 1924-4-27 6643 Humboldt Willow Creek Canyon; Northern Coast Ranges 609 Comment
  UC1239593  Valeriana sitchensis subsp. sitchensis Joseph P. Tracy 1937-7-29 15573 Humboldt in meadow at McKay Camp South Fork Mountain 1676 Comment
  HSC99463  Vancouveria hexandra K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-14 117 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  UC1196345  Vancouveria hexandra Joseph P. Tracy 1937-7-24 15535 Humboldt Trinity Summit, head of Little Hors-Linto Creek Little Hors-Linto Creek; Trinity Summit, Little Hors-Linto Creek 1371 Comment
  RSA189781  Vancouveria hexandra Noel Holmgren, James L. Reveal 1966-6-8 2659 Humboldt Coast Range, east of Arcata, 1.5 miles south of Korbel. 274 Comment
  UC1196347  Vancouveria hexandra Joseph P. Tracy Jul 16 1930-Jul 19 1930 8968 Humboldt in fir forest near McKay Camp South Fork Mountain; Northern Coast Ranges, South Fork Mountain 1676 Comment
  UC1541237  Vancouveria hexandra H. E. and S. T. Parks May, 1930 757 Humboldt in wet woods along the Van Duzen River; along the Van Duzen River Comment
  CAS-BOT-BC76088  Vancouveria planipetala Greg de Nevers 2001-4-17 12245 Humboldt Humboldt Redwoods State Park. 91 Comment
  HSC99440  Vancouveria planipetala K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-7 90 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-BC76091  Vancouveria planipetala Clarence R. Quick 1959-7-24 59 -36 Humboldt Bee Mountain, ca. 12 miles southwest of Orleans. Comment
  CDA39365  Veratrum californicum T. C. Fuller 1958-6-17 1713 Humboldt Mazepa Ranch, Wildcat Ridge. 0 Comment
  HSC57172  Veratrum insolitum Overton, Butler 1979-7-26 9981 Humboldt Near Willow Creek, E Fork, close to the town of Willow Creek 1326 Comment
  UC1173644  Veratrum insolitum Joseph P. Tracy 1929-7-4 8636 Humboldt French Camp Ridge 1066 Comment
  UC1198210  Veratrum insolitum Joseph P. Tracy 1947-7-5 17820 Humboldt in open prairie Trinity Summit 1524 Comment
  UC1225853  Veratrum insolitum Joseph P. Tracy 1948-9-5 18180 Humboldt 2 mi e Grove's Prairie; Trinity Summit 1524 Comment
  SDSU11035  Verbascum thapsus Harvey 1938-8-14 2322 Humboldt Trinity River. US 299. Comment
  CDA6483  Veronica filiformis F. Wetherbee 1960-7-2 Humboldt Eureka. 0 Comment
  UC176114  Veronica persica Joseph P. Tracy 1912-7-3 3718 Humboldt Eel River Valley, at Metropolitan Eel River Valley; Northern Coast Ranges, Eel River Valley 30 Comment
  HSC90767  Veronica scutellata Gail Newton 1982-5-30 3561 Humboldt Elk River Wildlife Area, Eureka Comment
  CHSC31325  Vicia Mark Stopher 1980-6-4 101 Humboldt Uncommon in diked off upland habitat along Elk River near Hwy 101 bridge. 1 Comment
  HSC82109  Vicia americana var. americana Thomas W. Nelson, Jane P. Nelson 1980-5-25 5252 Humboldt Along road from Dinsmore to Anderson Crossing, McKeown Ranch Rd. 100 m N of junction of road to Hindley Cabin 823 Comment
  UC1197478  Vicia americana var. americana Joseph P. Tracy 1939-4-18 16216 Humboldt between Miranda and Redway (South Fork of Eel River); North Coast Ranges, South Fork of Eel River 91 Comment
  UC1197480  Vicia americana var. americana Joseph P. Tracy 1935-7-27 14308 Humboldt McKay Prairie; Trinity Summit 1584 Comment
  POM278062  Vicia angustifolia Lyman D. Benson 1928-7-12 461 Humboldt Weott Ranger Station 61 Comment
  HSC15268  Vicia gigantea S. J. Hawks 1965-5-18 75 Humboldt Clam Beach. Comment
  UC198656  Vicia hirsuta Joseph P. Tracy 1916-5-31 4689 Humboldt Stitz Creek Northern Coast Ranges, Eel River (along Eel River from South Fork to Scotia) 60 Comment
  HSC89603  Vicia sativa subsp. nigra M. Roantree 1985-4-28 23 Humboldt E side of Trinidad Head, along dirt road Comment
  HSC3225  Vinca major D. K. Smith 1968-2-2 4 Humboldt On the bank of Crannell Rd. past the bridge Comment
  UC1198439  Viola adunca Joseph P. Tracy 1941-3-23 16806 Humboldt by old Strong's District School House (5 mi e of town); Carlotta 45 Comment
  JEPS50434  Viola cuneata Joseph P. Tracy 1926-6-6 7560 Humboldt on road w from Hoopa Valley; Northern Coast Ranges, Hoopa Mountain 914 Comment
  UC1198441  Viola hallii Joseph P. Tracy 1933-7-11 12664 Humboldt Horse Mountain 1432 Comment
  CAS-BOT-BC536955  Viola lobata Volney Rattan 1879-6-1 s.n. Humboldt Klamath Comment
  UC66206  Viola ocellata Mrs. M. H. Manning June 1902 Humboldt Hupa Comment
  HSC49627  Viola odorata R. York 1979-4-13 218 Humboldt College Cove, 1 mi N of Trinidad Comment
  CAS-BOT-BC270153  Viola palustris M. Louise Hutchinson 1913-5-1 s.n. Humboldt Eureka Comment
  HSC21878  Viola praemorsa subsp. praemorsa Greg Bos 1965-5-15 272 Humboldt 2 mi. W of Berry Summit along US 299 701 Comment
  UCR45417  Viola praemorsa subsp. praemorsa Pearson, Anderson, Flinn 1986-4-19 210 Humboldt Horse Mountain; 3 miles up Titlow Hill Rd. off Hwy 299 1434 Comment
  HSC32929  Viola purpurea subsp. purpurea Thomas W. Nelson 1973-5-30 974 Humboldt Humboldt/Trinity Co. line, Mt. Lassic 1790 Comment
  SEINET10404788  Viola sarmentosa Unknown 1967-6-16 67 -12 Humboldt of Orick; James Irvine redwood grove, U.S. 101 Comment
  SBBG4837  Viola sempervirens H. and M. Dearing 1933-5-16 1066 Humboldt N of Weott Comment
  JEPS40256  Vitis californica W. L. Jepson 1924-9-20 10653 Humboldt Richardson Grove South Fork Eel River 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
  CAS-BOT-BC199802  Vulpia Ashley C. Browne 1936-6-11 s.n. Humboldt Patrick's Point State Park Comment
  CAS-BOT-BC199803  Vulpia L. R. Abrams 1926-7-11 6050 Humboldt Mouth of Grizzly Creek on Van Duzon [Duzen] River Comment
  HSC35018  Vulpia microstachys Thomas W. Nelson 1975-5-24 1878 Humboldt McKeown Ranch, N of Dinsmore. Comment
  HSC70744  Vulpia myuros R. York 1980-5-17 539 Humboldt Near Le Perron Peak 1066 Comment
  HSC101659  Whipplea modesta J. P. Smith, J. O. Sawyer 2011-4-23 13119 Humboldt Along Salmon Creek Rd., 4.6 miles from its junction with U.S. 101. 290 Comment
  UC154108  Whipplea modesta J. P. Tracy 1906-4-15 2412 Humboldt above Korbel; Bald Mt. 609 Comment
  RSA46704  Woodwardia fimbriata Doris K. Kildale 1928-12-29 6762 Humboldt Stevens Grove Comment
  HSC6317  Wyethia angustifolia D. E. Anderson 1963-5-25 2484 Humboldt 2-3 mi. N of Capetown Comment
  JEPS90114  Wyethia angustifolia Dean William Taylor May 1972 1069 Humboldt near Arcata Comment
  UC169296  Wyethia angustifolia Joseph P. Tracy 1912-7-21 3755 Humboldt Alton Northern Coast Region, Alton 30 Comment
  UC175391  Wyethia angustifolia Joseph P. Tracy 1913-6-10 4079 Humboldt bluff near Bucksport; Northern Coast Ranges, Eureka 0 Comment
  CAS-BOT-BC326977  Wyethia longicaulis Volney Rattan 1881-6-1 s.n. Humboldt North of Mad River Comment
  BLMAR442  Xanthium spinosum Jennifer Anthony-Wheeler 2008-10-1 442 Humboldt Humboldt County, growing on Collenberg dairy, Mad River Road 7 Comment
  RSA183622  Xerophyllum tenax D. E. Anderson 1965-4-29 3555 Humboldt Road from Fickle Hill to Maple Creek; Butler Valley area Comment
  CDA36451  Xerophyllum tenax CDFA Staff 1978-6-15 Humboldt 0 Comment
  UC1173722  Zigadenus micranthus var. micranthus Harold E. Parks and Joseph P. Tracy 1934-6-27 11041 Humboldt Horse Mountain 1432 Comment
  UC1225856  Zigadenus micranthus var. micranthus Joseph P. Tracy 1947-7-9 17860 Humboldt Horse Mountain 1432 Comment



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