Search Results — 2000 specimen records retrieved (1358 records with coordinates)
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Results for search: County=HUMBOLDT; Source=All;   

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

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

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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  HSC73545  Abies concolor Gail Newton 1980-7-14 1470 Humboldt Near Last Chance Ridge. 1219 Comment
  SEINET200991  Abies concolor Joseph P. Tracy 1927-6-12 8144 Humboldt Horse Mountain 1524 Comment
  UC667970  Abies grandis Joseph P. Tracy 1937-6-20 15354 Humboldt 10 mi up stream from the mouth Bear River 152 Comment
  HSC23109  Abronia latifolia Norman Dennis 1965-6-8 106 Humboldt Samoa Peninsula along the W side of Humboldt Bay Comment
  HSC27878  Abronia latifolia Clifton Raymond Chesbrough 1973-6-19 76 Humboldt 1/4 mi. W of the Samoa entrance to Samoa Bridge Comment
  HSC38927  Abronia latifolia Linda M. Barker 1976-5-13 1490 Humboldt 3 mi. W of Arcata. Comment
  CAS-BOT-BC330542  Acer circinatum C. B. Wolf 1931-8-29 2368 Humboldt Redwood Highway, 3 miles N of Orick. (Davison's Ranch on Prairie Creek) 60 Comment
  HSC73028  Acer glabrum var. torreyi Gail Newton 1980-7-23 1757 Humboldt Near Packsaddle Ridge 1463 Comment
  HSC2814  Acer macrophyllum Elrid H. Spinas 1948-6-16 61 Humboldt Horse Mtn. Comment
  UC166038  Acer macrophyllum Joseph P. Tracy 1910-4-17 3117 Humboldt near the forks Elk River (region about Humboldt Bay); Northern Coast Region, Humboldt Bay, nr Elk River 0 Comment
  UC179927  Acer macrophyllum Joseph P. Tracy 1914-7-7 4493 Humboldt in valley of North Fork of Elk River Northern Coast Region, Humboldt Bay, North Fork Elk River (region about Humboldt Bay) 0 Comment
  SEINET10905087  Achillea Mary Susan Taylor 1982-10-24 Taylor 5173 Humboldt T5N R1W nw sec 15. Eureka quad. Samoa, under bridge, ca. 1 mi nw of Eureka. Sea level. Sandy soils. 0 Comment
  BLMAR746  Achillea millefolium Kate McGrath 2015-7-7 746 Humboldt Samoa Peninsula, Throughout the EPPA 1 Comment
  HSC26471  Achillea millefolium T. O. Osborne 1970-5-17 8 Humboldt Sugarloaf Rock, Cape Mendocino 46 Comment
  HSC4547  Achillea millefolium H. E. Parks, S. T. Parks Aug 1943 24246 Humboldt Egg Point, Trinidad 122 Comment
  HSC57026  Achlys triphylla Overton, Butler 1979-7-24 9647 Humboldt Near Friday Camp, close to the town of Willow Creek. 1250 Comment
  HSC3330  Achlys triphylla Francis Winter 1960-4-23 Humboldt 1 mi. S of Simpson Creek, Korbel-Maple Creek Rd. 213 Comment
  HSC70923  Acmispon micranthus R. York 1980-5-18 573 Humboldt Near Black Mtn. 792 Comment
  HSC71610  Acmispon micranthus J. P. Smith, Steve Selva 1970-6-14 3845 Humboldt Along Hwy. 96 at Whitmore Creek 152 Comment
  HSC59943  Aconitum columbianum subsp. columbianum J. P. Smith, Steve Selva 1970-6-30 4112 Humboldt Comment
  HSC55084  Aconogonon davisiae G. L. Clifton, Griswold 1979-7-31 11748 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa. 1845 Comment
  HSC100608  Actaea arguta Carl C. Marshall Apr 1886 182 Humboldt Warren Creek. Comment
  HSC56217  Actaea rubra G. L. Clifton, Griswold 1979-8-2 12233 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  SEINET12094122  Actaea rubra F. H. Utech 1988-1 88 -268 Humboldt 14 mi W of Bridgeville enroute to Carlotta on CA 36, Van Duzen County Park, Pamplin Grove 50 Comment
  HSC57018  Adenocaulon bicolor Overton, Butler 1979-7-24 9630 Humboldt Near Friday Camp, close to the town of Willow Creek. 1250 Comment
  UC164785  Adenocaulon bicolor J. P. Tracy 1901-6-2 1119 Humboldt immediate vicinity Eureka 0 Comment
  RSA15575  Adiantum aleuticum C. B. Wolf 1927-8-28 1170 Humboldt On grade 9 miles from Willow Creek, Lord Ellis Road to Blue Lake Comment
  CAS-BOT-BC65624  Adiantum jordanii Joseph P. Tracy 1895-9-1 6868 Humboldt near Pepperwood 30 Comment
  CAS-BOT-BC65623  Adiantum jordanii Donald Branscomb 1959-9-1 s.n. Humboldt About 1 mile north of Garberville Comment
  UCD137190  Adiantum jordanii K. Esau 1934-5-8 s.n. Humboldt Above Fort Seward. 457 Comment
  SEINET3823281 Image available Aesculus californica Joseph P. Tracy 1921-10-22 5978 Humboldt Bridgeville 305 Comment
  UC1199009  Aesculus californica Joseph P. Tracy 1912-7-4 3727 Humboldt near Hydesville; Northern Coast Region 60 Comment
  UC1222303  Aesculus californica Joseph P. Tracy 1950-6-21 18856 Humboldt w side mouth of South Fork (near the South Fork); Trinity River Valley 182 Comment
  UC249587  Aesculus californica Joseph P. Tracy 1921-10-22 5978 Humboldt Bridgeville; Northern Coast Ranges 304 Comment
  HSC35781  Agastache urticifolia Thomas W. Nelson, B. Reinhardt 1975-7-30 2096 Humboldt Head of Pilot Creek, Last Chance Ridge Comment
  HSC40853  Agastache urticifolia Thomas W. Nelson 1976-7-9 2996 Humboldt Ridge S of E peak of Mt. Lassic group (Signal Peak) 1677 Comment
  RSA93723  Ageratina occidentalis F. W. Peirson 1926-7-13 7052 Humboldt Near Blue Lake, Mad River Comment
  HSC70407  Agoseris grandiflora M. A. Baker 1980-6-7 1877 Humboldt Near Ammon Creek 732 Comment
  SEINET202732 Image available Agoseris grandiflora Joseph P. Tracy 1945-7-15 17513 Humboldt Trinty River Valley at Willow Creek. 152 Comment
  UCD128595  Agoseris grandiflora Joseph P. Tracy 1942-7-18 17276 Humboldt north end of town, Garberville. Comment
  POM225522  Agoseris grandiflora var. leptophylla P. A. Munz 1936-8-13 14383 Humboldt 10 miles west of Willow Creek Comment
  UC1173669  Agoseris grandiflora var. leptophylla Joseph P. Tracy 1939-8-5 16390 Humboldt (along Van Duzen River opposite Buck Mt.) Dinsmore's; Van Duzen River, Buck Mt. 762 Comment
  UC582742  Agoseris heterophylla var. heterophylla Joseph P. Tracy 1931-6-14 9579 Humboldt at Alton ((along Van Duzen River)); North Coast Ranges, Van Duzen River 30 Comment
  UCR136660  Agrostis alba H. M. Pollard 1948-7-21 s.n. Humboldt Klamath River banks near Orleans 122 Comment
  CAS-BOT-BC127292  Agrostis exarata Joseph P. Tracy 1935-5-25 13857 1/2 Humboldt Fort Seward. 106 Comment
  UC1103372  Agrostis exarata Joseph P. Tracy 1902-6-20 1754 1/2 Humboldt Eureka Northern Coast Region, Eureka 0 Comment
  UC1103376  Agrostis exarata Joseph P. Tracy 1934-6-23 13252 Humboldt along river near Blue Lake; Mad River 15 Comment
  UC176586  Agrostis exarata J. P. Tracy 1900-9-2 933 Humboldt Immediate vicinity of Eureka 0 Comment
  UC815014  Agrostis exarata H. E. Parks 1935-6-1 5607 Humboldt Spruce Cove Trinidad Comment
  UCSC000094  Agrostis exarata Ken Kellman 1969-12-31 s.n. Humboldt Eureka Comment
  HSC58753  Agrostis gigantea Overton, Butler 1979-7-24 9698 Humboldt Near Friday Camp, close to the town of Willow Creek. 1250 Comment
  CAS-BOT-BC139499  Agrostis hallii Gordon H. True 1965-9-25 2656 Humboldt Klamath River 1.5 mile east of Orleans. 213 Comment
  UC212879  Agrostis idahoensis Joseph P. Tracy 1919-9-22 5268 Humboldt Trinity Summit Northern Coast Ranges, Trinity Summit 1828 Comment
  HSC102238  Agrostis oregonensis M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-3 1164 Humboldt Patterson Meadows 1555 Comment
  UC526878  Agrostis oregonensis Joseph P. Tracy 1924-7-4 6711 Humboldt in boggy meadow Northern Coast Ranges, Snow Camp 1371 Comment
  HSC49053  Agrostis pallens Thomas Nelson, Jane Nelson 1978-7-3 4414 Humboldt McKeown Ranch, N of Dinsmore. Comment
  SEINET3127763  Agrostis pallens J. B. Davy 1899-6-13 5521 Humboldt Near Pepperwood Comment
  CAS-BOT-BC138636  Agrostis stolonifera Carl B. Wolf 1927-8-28 1189 Humboldt Eureka Bay, on the road to Arcata. Comment
  HSC99594  Agrostis stolonifera K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-8-10 262 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  RSA126092  Agrostis stolonifera Joseph P. Tracy 1902-7-4 1758 Humboldt [Unspecified] Comment
  UCD53537  Agrostis stolonifera R. Tofsrud 1948-9-1 s.n. Humboldt Salmon Creek Ranch, about 8 miles S. of Eureka. Comment
  UC552778  Agrostis thurberiana Joseph P. Tracy 1934-7-18 13453 Humboldt Grouse Mountain North Coast Ranges 1524 Comment
  BLMAR146  Aira caryophyllea Donald Hazlett 1994-6-7 146 Humboldt King range, near horse Mt. Ridge rd 670 Comment
  UC1103307  Aira caryophyllea Joseph P. Tracy 1932-5-1 9864 Humboldt Redway North Coast Ranges 182 Comment
  UC37074  Aira caryophyllea Harley P. Chandler May, 1901 Humboldt Humboldt Bay North Coast Ranges 30 Comment
  UCD55782  Aira caryophyllea Linda M. Barker 1976-5-13 1475 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  SEINET10839747  Aira caryophyllea Harold E. Parks, Susan T. Parks Parks 5850 Humboldt Spruce Cove, Trinidad. Comment
  CAS-BOT-BC138337  Aira caryophyllea var. caryophyllea W. R. Dudley 1899-6-1 s.n. Humboldt Eureka Penninsula. Comment
  CAS-BOT-BC138197  Aira praecox Joseph P. Tracy 1925-5-24 7013 Humboldt Northern Coast Ranges. Eureka. 60 Comment
  RSA256299  Aira praecox J. R. Reeder, C. G. Reeder 1973-5-26 6186 Humboldt 2 miles S of Orick in Humboldt State Park, near Pacific Shore. Comment
  UC526678  Aira praecox Joseph P. Tracy 1925-6-13 7099 Humboldt Eureka Northern Coast Ranges 0 Comment
  CAS-BOT-BC460751  Allium amplectens S. K. Harris; J. P. Tracy; H. S. Yates 1936-6-17 3401 Humboldt Crossing of Little Van Duzen River between Bridgeville and Dinsmore's. 710 Comment
  HSC44276  Allium amplectens Brad Klipfel 1973-7-1 117 Humboldt N Trinity Mtn. 1860 Comment
  CAS-BOT-BC462973  Allium bolanderi Harley P. Chandler 1901-6-1 1434 Humboldt Klamath River, North Coast Ranges 243 Comment
  HSC79066  Allium bolanderi var. bolanderi D. K. Imper 1984-6-6 Humboldt USFS Rd. 12N20 near Bald Mtn. Comment
  HSC103075  Allium campanulatum Sydney Carothers 2014-6-11 15 Humboldt Six Rivers Nat'l Forest, Lassics Botanical Area, upper north face of Mt. Lassic 1777 Comment
  HSC102617  Allium cratericola M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-28 1604 Humboldt Slopes above Bret Hole and below trail 6E18, 1.5 km SSW of Trinity Summit. 1778 Comment
  RSA293086  Allium hoffmanii Thomas W. Nelson, Jane P. Nelson 1980-6-27 5955 Humboldt Signal Peak south of Mount Lassic. 1524 Comment
  JEPS47610  Allium siskiyouense Joseph P. Tracy 1932-6-12 10484 Humboldt Head of Brett Hole Trinity Summit, Brett Hole 1828 Comment
  UCR275114  Allium triquetrum Charity A. Hartshorn 2016-4-24 08 Humboldt Arcata Marsh & Wildlife Sanctuary, east end of Klopp Lake 7 Comment
  CAS-BOT-BC476601  Allium unifolium Doris K. Kildale 1927-5-15 3296 Humboldt Petrolia. Matlole River Valley Comment
  SEINET12027585  Alnus rhombifolia J. P. Tracy 1950-1 19375 Humboldt Klamath River, near Slate Creek, below Orleans 8 mi 122 Comment
  HSC62778  Alnus rubra M. Dean Griswold Jr. 1979-5-30 89 Humboldt Along rd. up Jolly Giant Creek Comment
  RSA2928  Alnus rubra C. B. Wolf 1931-8-28 2365 Humboldt Redwood Highway 4.5 mi. no. Fortuna on road to Eureka. 15 Comment
  UC630536  Alnus rubra H. E. and S. T. Parks 1938-4-1 24126 Humboldt Spruce Cove Trinidad 60 Comment
  POM89806  Alnus viridis subsp. sinuata Joseph P. Tracy 1919-9-18 5241 Humboldt Trinity Summit. Comment
  CAS-BOT-BC138146  Alopecurus aequalis var. aequalis Volney Rattan 1903-1-1 s.n. Humboldt Mad River. Comment
  UCD55924  Alopecurus saccatus Joseph P. Tracy 1942-6-2 17096 Humboldt Alton. 30 Comment
  UC1222884  Ambrosia artemisiifolia Joseph P. Tracy 1950-9-22 19379 Humboldt 3 mi sw Orleans Comment
  OBI35979  Ambrosia chamissonis David J. Keil 1983-7-1 17288 Humboldt Ca 5 mi NW of Petrolia along Mattole Rd Comment
  CAS-BOT-BC142905  Amelanchier Doris K. Kildale; L. B. Kildale 1930-5-11 9559 Humboldt McClellan Hill near Bridgeville 609 Comment
  HSC70328  Amelanchier alnifolia M. A. Baker 1980-6-8 1883 Humboldt Near Buck Flat. 1554 Comment
  BLMAR688  Amelanchier alnifolia var. semiintegrifolia Jennifer Wheeler 2012-6-19 688 Humboldt Lacks Creek, Pine Ridge Road 1097 Comment
  HSC18514  Amelanchier alnifolia var. semiintegrifolia Francis Winter 1960-4-24 Humboldt 8 mi. NE of Redwood Creek Ranch 610 Comment
  HSC96268  Amelanchier alnifolia var. semiintegrifolia J. Breton, A. Livingston 2005-6-10 7 Humboldt Coldspring Camp, 7.4 mi. S of Hwy. 299 on NF1 1357 Comment
  HSC44355  Amelanchier pallida Brad Klipfel 1975-7-11 700 Humboldt Horse Mtn. Comment
  HSC55995  Amelanchier pallida Overton, Butler 1979-7-31 11432 Humboldt Near Water Dog Lakes, close to the town of Hoopa 1830 Comment
  HSC96014  Amelanchier pallida Juha Pykala, D. H. Norris 1987-5-19 708 Humboldt Horse Mtn. Rd. at intersection of rd. to ski lift 1400 Comment
  CDA1716  Ammophila arenaria T. C. Fuller 1961-9-28 7062 Humboldt 0.2 miles south of Samoa. 0 Comment
  OBI65609  Ammophila arenaria G. Douglas Barbe, T. C. Fuller, Hrusa 2-2000 1974-6-19 1881 Humboldt North Coast Ranges. Mad River mouth, beach S of river, at end of Iversen Ln, Tyee City Comment
  UC1191079  Amsinckia eastwoodiae H. E. Parks March, 1933 4283 Humboldt Spruce Cove Trinidad Comment
  HSC32503  Anagallis arvensis David Johnson 1974-5-2 73 Humboldt Mad River Co. Park, mouth of the Mad River; by the parking lot Comment
  SEINET3823286 Image available Anagallis arvensis J. P. Tracy 1906-1 2490 Humboldt Vicinity of Eureka 152 Comment
  UC1191691  Anagallis arvensis Malcolm A. Nobs and S. Galen Smith 1949-8-11 1342 Humboldt e. shore Stone Lagoon Comment
  CAS-BOT-BC45134  Anaphalis margaritacea Roxana S. Ferris 1937-8-21 9387 Humboldt Shelter Cove Comment
  UC582520  Anaphalis margaritacea Joseph P. Tracy 1934-8-31 13649 Humboldt Kneeland Prairie 762 Comment
  CDA10066  Anaphalis margaritacea M. R. Pryor 1948-7-29 Humboldt County Road, 1 mile east of Loleta. 0 Comment
  UC1222881  Anaphalis margaritacea Joseph P. Tracy 1950-9-10 19363 Humboldt 1 mi inland, on foothills of the Cape Ridge Cape Mendocino 60 Comment
  CAS-BOT-BC391786  Anemone deltoidea Mrs. H. C. Cantelow 1936-5-17 s.n. Humboldt 4 1/2 miles east of Orick Comment
  HSC56146  Anemone deltoidea G. L. Clifton, Griswold 1979-8-1 11975 Humboldt Near Mill Creek Lakes, close to the town of Hoopa 1707 Comment
  UC586000  Angelica genuflexa Joseph P. Tracy 1927-9-25 8380 Humboldt 2 mi s of Fields Landing (around Humboldt Bay, at Still Ranch); Northern Coast Region, Still Ranch 6 Comment
  JEPS14107  Angelica hendersonii Joseph P. Tracy 1937-8-22 15674 Humboldt Table Bluff 91 Comment
  UC1087231  Angelica hendersonii Peter H. Raven, Richard Snow 1958-7-21 13660 Humboldt Cape Mendocino Comment
  HSC71276  Angelica lucida J. M. DiTomaso 1980-6-8 1577 Humboldt Next to Hwy 101 between Arcata and Eureka, 1.5 mi. S of Indianola Rd. Comment
  UC1197332  Angelica lucida Joseph P. Tracy 1941-8-3 16977 Humboldt at w foot of Table Bluff Table Bluff 6 Comment
  UC183771  Angelica tomentosa Joseph P. Tracy 1913-9-9 4391 Humboldt Northern Coast Ranges, at s end of Big Lagoon Big Lagoon Big Lagoon Big Lagoon; Northern Coast Ranges, Big Lagoon 30 Comment
  HSC5979  Anisocarpus madioides H. E. Parks, J. P. Tracy 1934-7-6 5103 Humboldt Cameron Hill, Kneeland 610 Comment
  HSC56950  Antennaria suffrutescens Overton, Butler 1979-7-23 9450 Humboldt Near Horse Mtn. Mine, close to the town of Willow Creek 1295 Comment
  HSC96072  Antennaria suffrutescens J. McIntire, S. Lyon 2005-6-24 15 Humboldt Forest Service Rd. 6N36, 3/4 mile N of junction with Forest Service Rd. NF1; Radio Tower Comment
  SEINET11853677  Antennaria suffrutescens J. P. Tracy 1947-1 17864 Humboldt Horse Mountain 1433 Comment
  HSC12590  Anthemis cotula C. Kline 1970-10-28 53 Humboldt North Bank Rd., 3 mi. W of Blue Lake, Mad River gravel bottoms Comment
  RSA254784  Anthemis cotula Thomas W. Nelson 1973-8-19 1111 Humboldt McKeown Ranch north of Dinsmore Comment
  HSC10102  Anthoxanthum occidentale E. W. Styskel 1963-4-20 19 Humboldt 3 mi SE of Korbel on Snow Camp Rd. 290 Comment
  HSC39951  Anthoxanthum occidentale Linda M. Barker 1976-2-22 1312 Humboldt 3 mi. W of Arcata Comment
  HSC5263  Anthoxanthum occidentale John Warner Hosking 1966-8-5 Humboldt Fickle Hill Rd, 1 mi. E of Arcata. Comment
  HSC90402  Anthoxanthum occidentale Michele Lewis, Lisa Sims, Roger Cook 1992-5-12 49 Humboldt Behind the Redwood Science Lab, down gated fire access road 50 m, 10 m to right of trail. Comment
  UC573791  Anthoxanthum odoratum H. S. Yates 1936-6-16 5684 Humboldt near Bayside 9 Comment
  UCD56165  Anthoxanthum odoratum A. H. Murphy 1948-5-3 s.n. Humboldt 1.5 mile north of Loleta, Table Bluff, H. Perrott's Ranch. Comment
  CDA41213  Antirrhinum vexillo-calyculatum subsp. breweri E. C. Whitney 1960-9-1 s.n. Humboldt State Highway 96 near Bluff Creek. 0 Comment
  SEINET14183378  Aphanes occidentalis Unknown 1918-5-1 4903 Humboldt Plants of Northern Coast Ranges of Califonia warm place by roadside towards McBrides KNEELAND PRAIRIE, HUMBOLDT COUNTY Altitude 2500 ft. Comment
  BLMAR205  Apocynum androsaemifolium Jennifer Anthony-Wheeler 1996-7-9 205 Humboldt Pilot ridge., growing along rd side 1219 Comment
  JEPS49816  Apocynum cannabinum Lincoln Constance 1934-6-11 848 Humboldt trail along e. bank of S. Fork of Eel N. Dyerville Flat; S. Fork Eel R., Bull Creek Region, N. Dyerville Flat Comment
  HSC31631  Aquilegia formosa var. formosa Glenn McGourty 1974-4-27 18 Humboldt 1 mi. from Capetown Bridge Comment
Read comments
May 26 2016
  HSC70390  Arabis breweri var. breweri Gail Newton 1980-6-7 140 Humboldt Near Brush Mtn. 1128 Comment
  HSC54209  Arabis glabra Griswold, Butler 1979-7-12 7253 Humboldt Near Cedar Creek, close to the town of Willow Creek 1158 Comment
  HSC58213  Arabis glabra Walter Overton 1979-8-1 12342 Humboldt Near Mill Creek, Middle Fork, close to the town of Hoopa. 1341 Comment
  HSC73687  Arabis glabra M. A. Baker 1980-7-15 2980 Humboldt Near Whiting Ridge. 1341 Comment
  UC162637  Arabis glabra Harley P. Chandler Jun 1901 1337 Humboldt Hupa Indian Reservation North Coast Ranges 152 Comment
  UC492237  Arabis glabra Joseph P. Tracy 1932-5-1 9860 Humboldt Redway Northern Coast Ranges 152 Comment
  UC1225763  Arabis glabra Joseph P. Tracy 1946-7-7 17610 Humboldt Willow Creek Trinity River Valley 152 Comment
  UC314608  Aralia californica Joseph P. Tracy 1923-9-16 6554 Humboldt Trinity R. Valley near mouth of S. Fork; Northern Coast Ranges 182 Comment
  CAS-BOT-BC128694  Arbutus menziesii Marcus E. Jones 1924-4-25 s.n. Humboldt Garberville Comment
  HSC74651  Arbutus menziesii M. A. Baker 1980-5-17 1235 Humboldt Near Le Perron Peak 792 Comment
  HSC7600  Arbutus menziesii John A. Dubois 1962-5-12 12 Humboldt 20 mi. E of Arcata Comment
  HSC98739  Arbutus menziesii Cara Witte 2008-5-26 661 Humboldt Along Forest Service Road 5N10. 1/2 mile south of intersection with Friday Ridge Road. 1487 Comment
  HSC98832  Arbutus menziesii Cara Witte 2008-9-13 1040 Humboldt Forest Service Road 4N38. 1/2 mile south of intersection to Tri Board Camp. 1506 Comment
  CAS-BOT-BC407747  Arceuthobium abietinum Doris K. Kildale 1926-9-5 2634 Humboldt Lasseck's Peaks, between Goat Camp and Signal Peak 1661 Comment
  SEINET11853818  Arctium minus J. P. Tracy 1950-1 19351 Humboldt Occasional at Beatrice, 3 mi S of Field's Landing Comment
  UC585902  Arctostaphylos Joseph P. Tracy 1931-3-1 9283 Humboldt Miranda South Fork of Eel River 121 Comment
  JEPS38977  Arctostaphylos canescens Joseph P. Tracy 1935-7-14 14064 Humboldt Horse Mountain 1432 Comment
  SEINET11984830  Arctostaphylos canescens Unknown 1965-1 540 Humboldt on USAL Road, 23 mi N of junction with CA 1 & 2.7 mi S of junction of Four Corners Comment
  RSA20914  Arctostaphylos canescens var. candidissima C. B. Wolf 1937-8-13 9229 Humboldt North coast range, 8 mi. east of Hoopa Valley on new road towards Trinity summit. 1220 Comment
  CAS-BOT-BC23744  Arctostaphylos columbiana Carl B. Wolf 1930-10-29 1040 Humboldt Old coast road, 7 miles so. of Honeydew 304 Comment
  CAS-BOT-BC23797  Arctostaphylos columbiana H. E. Parks 1931-12-1 4950 Humboldt Hobson's, Trinidad 60 Comment
  CAS-BOT-BC23799  Arctostaphylos columbiana E. K. Balls; L. W. Lenz 1955-5-16 20746 Humboldt 24.6 mie. SE of Shelter Cove, Coast Road to Rockport 457 Comment
  HSC31516  Arctostaphylos columbiana Steve Selva, Roger Jensen 1974-8-21 30 Humboldt Redwood Forest across from Hwy. 101 entrance to Patrick's Point State Park Comment
  HSC62325  Arctostaphylos columbiana Ruby Van Deventer 1959-2-28 Humboldt Patrick's Point on Coastal Bluff Comment
  JEPS38961  Arctostaphylos columbiana Joseph P. Tracy 1934-3-11 13151 Humboldt French Camp Ridge 1066 Comment
  JEPS38964  Arctostaphylos columbiana Joseph P. Tracy 1934-2-22 13139 Humboldt vicinity of Trinidad 60 Comment
  SBBG5510  Arctostaphylos columbiana M. J. Cody 1938-7-15 Humboldt Trinidad Comment
  UC397305  Arctostaphylos columbiana Joseph P. Tracy 1923-3-31 6169 Humboldt Table Bluff Northern Coast Region, around Humboldt Bay 60 Comment
  UC549499  Arctostaphylos columbiana J. E. Adams 1935-5-12 1047 Humboldt Patrick's Point Comment
  UC585918  Arctostaphylos columbiana Joseph P. Tracy 1934-3-11 13152 Humboldt French Camp Ridge 1066 Comment
  UC585921  Arctostaphylos columbiana Joseph P. Tracy 1936-8-24 15170 Humboldt 6 mi se Arcata; Fickle Hill 609 Comment
  UC673126  Arctostaphylos columbiana Joseph P. Tracy 1940-7-14 16688 Humboldt near KIngs Peak; Wilder Ridge 762 Comment
  UCD50695  Arctostaphylos columbiana Lincoln Constance 1934-5-24 638 Humboldt Bordering lower Look Prairie on E. side. 121 Comment
  UCD50759  Arctostaphylos columbiana Roman Gankin; Richard Hildreth 1967-10-26 1169 Humboldt 20 road miles east of Hwy. 101 on Bald Hills Road (from Orick). Comment
  UCD50760  Arctostaphylos columbiana Roman Gankin; W. R. Hildreth 1967-10-26 1168 Humboldt 20 road miles east of Hwy. 101 on Bald Hills Road (from Orick). Comment
  RSA134600  Arctostaphylos columbiana var. columbiana P. C. Everett, E. K. Balls, George B. Everett 1959-10-25 23965 Humboldt 8.8 mi. NE from Blue Lake, U.S. Hwy, 299, Arcata to Willow Creek. 274 Comment
  RSA24329  Arctostaphylos columbiana var. columbiana C. B. Wolf 1941-2-26 4041 Humboldt 6 2/10 mi. W. of Klamath River Bridge on Weitchpec to Orick Rd. 610 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
  UC153967  Arctostaphylos manzanita subsp. manzanita Joseph P. Tracy 1909-10-7 3112 Humboldt Gans Prairie Northern Coast Ranges 609 Comment
  SEINET2031081 Image available Arctostaphylos montana Joseph P. Tracy 1934-1 13158 Humboldt French Camp Ridge 1067 Comment
  HSC7658  Arctostaphylos nevadensis Doris K. Kildale 1926-9-5 2615 Humboldt Lassicks Peaks, Red Lassick and Gray Camp 1662 Comment
  CAS-BOT-BC40067  Arctostaphylos nevadensis subsp. knightii Walter Knight; Irja Knight 1988-9-5 6360 Humboldt 21 miles up Bald Hill road from US-101 en route to Hoopa. 975 Comment
  CAS-BOT-BC40069  Arctostaphylos nevadensis subsp. knightii Doris K. Kildale 1926-8-22 2574 Humboldt Bald Hills near Tomlinson's on Orick-Martin's Ferry road. Comment
  HSC70475  Arctostaphylos patula Gail Newton 1980-7-15 1588 Humboldt Near Sims Mtn. 1311 Comment
  UC1198669  Arctostaphylos patula Joseph P. Tracy 1939-8-16 16407 Humboldt Horse Mountain 1402 Comment
  CAS-BOT-BC27298  Arctostaphylos tracyi Joseph Prince Tracy 1923-2-18 6141 Humboldt Big Lagoon 6 Comment
  RSA636928  Arctostaphylos uva-ursi Jon E. Keeley, J. O. Sawyer 1996-10-11 27665 Humboldt Landfill Christensen Nature Conservancy Reserve, Arcata. 25 Comment
  UC1196868  Arctostaphylos uva-ursi Joseph P. Tracy 1923-3-31 6170 Humboldt Table Bluff Northern Coast Region, around Humboldt Bay 60 Comment
  UC154201  Arctostaphylos uva-ursi Harley P. Chandler May, 1901 1193 Humboldt Humboldt Bay North Coast Ranges 30 Comment
  UC527561  Arctostaphylos uva-ursi C. B. Wolf 1931-8-30 2374 Humboldt Samoa Humboldt Bay 7 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
  CAS-BOT-BC48259  Arctostaphylos viscida subsp. viscida Joseph P. Tracy 1939-4-29 16265 Humboldt Orleans 121 Comment
  CDA6803  Arctotheca calendula G. D. Barbe 1988-7-18 4293 Humboldt Ferndale: Larry Pries Dairy, 3.4 mi. W of Main St, on Centerville Beach Road. 0 Comment
  SD42237  Arenaria douglasii Carl B. Wolf 1937-6-14 8822 Humboldt North Coast Range, Kneeland Prairie. 819 Comment
  HSC59482  Armeria maritima subsp. californica M. A. Ericksen 1979-4-29 243 Humboldt 0.4 mi. N of Coast Guard Station, Samoa Peninsula. Comment
  RSA245204  Armeria maritima subsp. californica Jerry Parker 1968-10-14 29 .1 Humboldt Mckinleyville Beach. Comment
  CAS-BOT-BC82100  Arnica cernua Harley P. Chandler 1901-6-1 1298 Humboldt [Hupa] Hoopa Indian Reservation 609 Comment
  JEPS20981  Arnica cernua Joseph P. Tracy 1938-6-13 15902 Humboldt Horse Mt. 1432 Comment
  CAS-BOT-BC82425  Arnica discoidea Joseph P. Tracy 1935-7-23 14154 Humboldt Trinity Summit, lower end of Brett Hole 1584 Comment
  JEPS20984  Arnica discoidea Joseph P. Tracy 1937-7-2 15398 Humboldt 2 mi e Grove's Prairie; Trinity Summit 1524 Comment
  RSA43686  Arnica discoidea H. M. Pollard 1948-7-21 s.n. Humboldt Near Orleans. Comment
  HSC98764  Artemisia douglasiana Cara Witte 2008-9-13 1036 Humboldt Forest Service Road 4N06. 1/4 mile east of intersection with National Forest 1. Cow Creek Ridge. 1283 Comment
  HSC38544  Artemisia douglasiana R. Sutherland 1976-8-13 24 .13876 Humboldt Mouth of Redwood Creek at South Fork of Eel River 27 Comment
  HSC40299  Artemisia pycnocephala Linda M. Barker 1976-8-2 1675 Humboldt Lanphere- Christensen Dunes, 3 mi. W of Arcata Comment
  SD41467  Artemisia pycnocephala Edith A. Purer 1932-7-27 4123 Humboldt Samoa Comment
  SEINET190483  Artemisia pycnocephala H. E. Parks Aug 1941 24186 Humboldt Little River State Park Comment
  SEINET198593  Artemisia pycnocephala H. E. Parks, S. T. Parks Jun 1952 24495 Humboldt Samoa Comment
  POM264517  Artemisia pycnocephala H. E. Parks 1941-08 24186 Humboldt Little River State Park Comment
  CAS-BOT-BC97242  Artemisia suksdorfii Carl B. Wolf 1937-9-9 9303 Humboldt Coast, 4 1/2 mi. So. of Cape Mendocino 6 Comment
  CAS-BOT-BC453343  Aruncus dioicus var. vulgaris Volney Rattan 1878-6-16 s.n. Humboldt Mad River Comment
  CAS-BOT-BC453345  Aruncus dioicus var. vulgaris Doris K. Kildale 1930-6-1 9747 Humboldt Klamath River at Weitchpec Comment
  RSA21567  Aruncus sylvester Doris Kildale Gillespie 1937-09 9368 Humboldt Humboldt Comment
  RSA46846  Aruncus sylvester Doris K. Kildale 1927-7-3 3663 Humboldt Willow Creek Flat. Comment
  HSC49144  Asarum caudatum J. O. Sawyer 1977-4-23 2840 Humboldt Dagsaw Spring on road to Onion Mtn. Comment
  POM92404  Asarum caudatum L. R. Abrams 1922-6-25 s.n. Humboldt North of Mad River near Arcata Comment
  SEINET12097904  Asarum hartwegii H. P. Chandler 1901-1 1478 Humboldt Klamath River 396 Comment
  UC249520  Asclepias speciosa Joseph P. Tracy 1922-9-3 6114 Humboldt Klamath River at Bluff Creek Northern Coast Ranges, Klamath River 91 Comment
  HSC54217  Aspidotis densa Griswold, Butler 1979-7-12 7281 Humboldt Near Cedar Creek, close to the town of Willow Creek 1158 Comment
  HSC99110  Aspidotis densa Cara Witte 2008-6-13 715 Humboldt Forest Service Road 4N32. 1.4 miles north of intersection with Forest Service Road 4N32B. 1382 Comment
  RSA53857  Aspidotis densa Henry M. Pollard 1944-9-8 s.n. Humboldt Orleans Mountain 1524 Comment
  UC62541  Aspidotis densa Harley P. Chandler June, 1901 1380 Humboldt Hupa Indian Reservation; North Coast Ranges 152 Comment
  RSA134590  Aster chilensis Percy C. Everett, E. K. Balls 1959-10-25 23960 Humboldt 14 miles W of Willow Creek on Hwy 299 to Arcata. 503 Comment
  SEINET201024  Aster engelmannii J. P. Tracy 1919-9-18 5227 Humboldt Trinity Summit 1890 Comment
  SEINET10473646  Aster subspicatus Mary Susan Taylor 1982-10-24 Taylor 5175 Humboldt T5N R1W nw sec 15. Eureka quad. Samoa, under bridge, ca. 1 mi nw of Eureka. Sea level. Sandy soils. 0 Comment
  JEPS22949  Astragalus rattanii var. rattanii Volney Rattan 1884-1 Humboldt Eel River Comment
  UC1755322  Astragalus umbraticus Dean W. Taylor 2006-8-2 19569 Humboldt Showers Mountain; on north flank of the mountain, south rim of the Mad River canyon 1051 Comment
  UCD105332  Astragalus umbraticus Joseph P. Tracy 1940-8-25 16706 Humboldt Bald Mountain; at 'Lake Prairie'. 1066 Comment
  SEINET12160220  Astragalus umbraticus J. P. Tracy 1940-1 16706 Humboldt Bald Mt at 'Lake Prairie 1067 Comment
  HSC76227  Asyneuma prenanthoides Overton, Butler 1979-7-24 9772 Humboldt Near Black Rock, close to the town of Willow Creek 1463 Comment
  SFV18602  Asyneuma prenanthoides T. W. Nelson, J. P. Nelson 1987-6-27 8619 Humboldt Along USFS road to Onion Lake, 8.2 miles from junction with State Route 96. 823 Comment
  HSC3820  Asyneuma prenanthoides Paul Shields Aug 1955 Humboldt 3 mi. N of Weott Comment
  OBI5364  Athyrium filix-femina Robert J. Rodin 1969-8-16 8367 Humboldt Near Carlotta in forest where second growth redwoods had just been cut, near Van Duzen River. Comment
  HSC91598  Athyrium filix-femina var. cyclosorum E. Mackey 1986-10-2 Humboldt Patrick's Point State Park by trail to Agate Beach Comment
  JEPS341  Athyrium filix-femina var. cyclosorum Wm. K. D. Reynolds August, 1933 1 Humboldt Briceland Comment
  HSC6517  Athysanus pusillus D. E. Anderson 1963-5-19 2470 Humboldt Kneeland Area Comment
  UC162643  Athysanus pusillus Joseph Burtt Davy and Walter C. Blasdale 1899-6-8 5350 Humboldt near Harris; North-Western California Comment
  HSC47798  Avena barbata Michael A. Watkins 1978-6-10 4 Humboldt Arcata, E side of the 7th Street overpass to Hwy. 101 Comment
  UCD56296  Avena fatua A. H. Murphy 1951-4-2 s.n. Humboldt Side of Highway 101 / mile south of Phillipsville. Comment
  JEPS21274  Baccharis glutinosa Joseph P. Tracy 1938-8-21 16128 Humboldt Little River 9 Comment
  UC164794  Baccharis glutinosa J. P. Tracy 1900-9-3 937 Humboldt immediate vicinity of Eureka 0 Comment
  CAS-BOT-BC98032  Baccharis pilularis Doris K. Kildale 1926-11-27 2845 Humboldt Alton Bluff 30 Comment
  RSA46911  Baccharis pilularis Doris K. Kildale 1925-12-25 1441 Humboldt Mouth of Eel River Comment
  UC1222974  Baccharis pilularis Joseph P. Tracy 1949-10-16 18589 Humboldt Blue Slide Northern Coast Ranges, Van Duzen River 91 Comment
  UC127578  Baccharis pilularis Mrs. M. H. Manning 1901-1-1 Humboldt Comment
  HSC12350  Baccharis pilularis subsp. consanguinea Steve Dorei 1970-10-31 139 Humboldt Scotia Bluff area Comment
  SEINET3132551  Baccharis pilularis subsp. consanguinea J. W. Johnson 1961-11-20 1409 Humboldt Arcata; at the edge of the vernal pond community; hollow 10, W.M. Lanphere farm; Samoa Peninsula. Comment
  UC275466  Balsamorhiza deltoidea Joseph P. Tracy 1925-5-17 6984 Humboldt near South Fork of Trinity River Valley; Trinity River Valley 182 Comment
  HSC89519  Barbarea verna M. Roantree 1985-6-10 85 Humboldt W side of Trinidad Head Comment
  RSA245262  Barbarea verna Thomas W. Nelson 1973-4-25 798 Humboldt Beside Hwy 101 at Bayside turnoll. Comment
  UC581761  Bellis perennis Joseph P. Tracy 1937-6-20 15345 Humboldt 10 mi upstream from mouth Bear River 152 Comment
  HSC32388  Bellis perennis Linda M. Barker 1974-5-11 180 Humboldt Redwood National Park, Bald Hills Rd., Gans Prairie 549 Comment
  SFV18538  Bellis perennis M. Cavelti 2002-5-4 34 Humboldt On A street off 11th street, along western side of road. 20 Comment
  HSC75815  Bensoniella oregona Bill Copeland 1980-7-2 314 Humboldt Near Snow Camp Mtn. 1311 Comment
  HSC24379  Berberis aquifolium J. O. Sawyer 1970-6-24 2258 Humboldt S of Mill Creek Gap, FS 10N02 1433 Comment
  HSC38080  Berberis aquifolium Thomas W. Nelson, James Nelson 1976-5-30 2627 Humboldt McKeown Ranch, N of Dinsmore. Comment
  HSC97596  Berberis aquifolium var. aquifolium Steven Lee 2004-4-26 31 Humboldt Horse Mtn., 5 mi. up Titlow Hill Rd. from Hwy. 299 Comment
  HSC76280  Berberis nervosa Denis Kearns 1981-7-8 146 Humboldt Near Bluff Creek 622 Comment
  HSC99384  Berberis nervosa K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-6-28 33 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  HSC45419  Bistorta bistortoides Thomas W. Nelson, Jane P. Nelson 1977-7-4 3595 Humboldt Margin of pond above Alder Springs 1585 Comment
  CAS-BOT-BC66270  Blechnum spicant Doris K. Kildale 1928-12-30 6885 Humboldt Phillipsville Comment
  HSC984  Blechnum spicant Gene S. Van Horn 1962-1-5 5 Humboldt Arcata, Near mouth of W Creek entering H.S.C. reservoir 61 Comment
  HSC98997  Blechnum spicant Cara Witte 2008-7-28 959 Humboldt Grouse Mountain. Forest Service Road 5N04. Near spring. 1641 Comment
  UCD136026  Blechnum spicant Gordon Leppig 1998-6-26 860 Humboldt McKinleyville, Hammond Trail, 100 m south of Knox Cove. UTM zone 10, 4535N, 405E. 18 Comment
  CAS-BOT-BC15802  Boechera acutina Joseph Prince Tracy 1932-7-11 10396 Humboldt Klamath Mountains. Trinity Summit. At Corral Prairie. 1524 Comment
  UCR138660  Bolboschoenus maritimus subsp. paludosus Gordon Leppig 1999-10-25 1268 Humboldt State Hwy 101, mile marker 61.40 2 Comment
  HSC31636  Borago officinalis Glenn McGourty 1974-6-1 85 Humboldt Comment
  HSC78085  Botrychium multifidum var. intermedium L. P. Janeway, Amy Eisenberg 1984-4-25 748 Humboldt On N Spit of Humboldt Bay, SE side of intersection of Samoa and Fairhaven rds. 3 Comment
  CAS-BOT-BC420272  Boykinia occidentalis L. R. Abrams 1916-7-21 6149 Humboldt Grizzly Creek Comment
  RSA32654  Boykinia occidentalis Doris K. Kildale 1925-7-28 1100 Humboldt [Unspecified] Comment
  HSC8596  Brassica rapa John A. Dubois 1962-5-23 30 Humboldt 15 mi. E of Arcata Comment
  HSC5216  Brickellia californica W. L. Jepson 1936-8-8 17865 Humboldt South Fork of Eel River, Richardson Grove Comment
  UC205166  Brickellia californica Joseph P. Tracy 1920-8-15 5354 Humboldt mouth of Bluff Creek Northern Coast Ranges, Klamath River 152 Comment
  CAS-BOT-BC127680  Brickellia greenei Joseph P. Tracy 1935-7-30 14361 Humboldt Serpentine formatin, Salmon Summit 1767 Comment
  HSC9101  Briza minor Paul Shields Aug 1955 Humboldt 2 mi. S of Weott Comment
  HSC35610  Brodiaea elegans subsp. elegans Thomas W. Nelson, Jane P. Nelson, James Nelson 1975-7-15 2022 Humboldt Beside Bald Hills Rd. 1 mi. E of Redwood National Park Comment
  HSC35940  Brodiaea elegans subsp. elegans Thomas W. Nelson, Jane P. Nelson 1975-7-15 2033 Humboldt Beside Bald Hills Rd. 1 mi. E of Redwood National Park Comment
  HSC32915  Brodiaea stellaris Thomas W. Nelson, Jane P. Nelson 1973-3-28 964 Humboldt McKeown Ranch N of Dinsmore Comment
  JEPS5498  Brodiaea stellaris Joseph P. Tracy 1925-5-30 7024 Humboldt on grassy slopes Northern Coast Ranges, McClellan Mountain 822 Comment
  UC1103285  Bromus carinatus var. carinatus J. P. Tracy 1900-7-4 892 Humboldt opposite Eureka (Ocean Beach at Somoa); Samoa, Ocean Beach Comment
  UC187097  Bromus carinatus var. carinatus Joseph P. Tracy 1911-6-25 3265 Humboldt Northern Coast Region, atEureka Eureka; Northern Coast Region, Eureka 0 Comment
  UCD59082  Bromus carinatus var. marginatus Joseph P. Tracy 1950-6-15 18786 Humboldt Mail Ridge. North of Harris 7 miles. 1036 Comment
  CDA18212  Bromus carinatus var. maritimus G. D. Barbe, T. C. Fuller 1974-6-17 1840 Humboldt North Coast Ranges; Shelter Cove, uphill, E of Sail Court. 91 Comment
  UC1145143  Bromus commutatus Joseph P. Tracy 1917-6-24 4824 Humboldt along Eel River from South Fork to Scotia, Holmes Flat Holmes Flat; Northern Coast Ranges, Eel River, Holmes Flat 60 Comment
  HSC9287  Bromus diandrus R. D. Modafferi 1965-5-9 52 Humboldt 0.2 mi. N of Trinidad on Trinity St. 305 Comment
  HSC9253  Bromus hordeaceus R. J. Vernimen 1963-4-27 42 Humboldt 0.5 mi. off Samoa Rd., behind the Georgia-Pacific dump, 7.5 mi. SW of Arcata, along logging road Comment
  RSA126884  Bromus laevipes H. S. Yates 1936-6-17 5686 Humboldt 1 mile west of Bridgeville 183 Comment
  RSA126835  Bromus sterilis H. S. Yates 1936-5-17 5714 Humboldt Near Burr valley; South Fork Pk. 915 Comment
Read comments
Apr 6 2017
  UC1103350  Bromus tectorum Joseph P. Tracy 1933-5-18 12187 Humboldt near Blue Lake (along Mad River); Mad River 15 Comment
  CAS-BOT-BC185521  Bromus vulgaris Henry M. Pollard 1948-8-4 s.n. Humboldt Orleans Mountain Trail. 1371 Comment
  HSC72678  Bromus vulgaris J. P. Smith 1977-7-3 9242 Humboldt Six Rivers National Forest, on Rd. to Onion Lake, 4.7 mi. from junction with Hwy. 36 610 Comment
  HSC9375  Bromus vulgaris D. E. Anderson 1965-9-5 4080 Humboldt Along Mad River, 3 mi. S of Blue Lake Comment
  RSA249329  Cacaliopsis nardosmia D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-13 5569 Humboldt Westward lower slopes of Black Lassic near Trinity County line. 1585 Comment
  CHSC68489  Cakile maritima Vernon H. Oswald 1997-4-10 8332 Humboldt Big Lagoon County Park at the southwest edge of Big Lagoon. North of the launch ramp. 3 Comment
  HSC39981  Cakile maritima Linda M. Barker 1976-4-30 1418 Humboldt 3 mi. W of Arcata Comment
  HSC40408  Cakile maritima Linda M. Barker 1976-6-22 1627 Humboldt 3 mi. W of Arcata Comment
  HSC90258  Cakile maritima Jean Hanson 1980-5-24 78 Humboldt Indian (Gunther) Island, in Humboldt Bay, city of Eureka. W end of island, 25 ft. from high tide line Comment
  SEINET11092947  Cakile maritima Unknown 1948-6-10 18062 Humboldt CALIFORNIA PLANTS -- HUMBOLDT COUNTY Dwarf plants abundant. A very recent introduction TRINIDAD Beach west of town. Altitude 10 to 200 feet. Comment
  RSA12540  Calamagrostis C. B. Wolf 1934-7-2 5898 Humboldt wet meadow at small lake at Snow Camp. (Mts. east of Korbel) Comment
  HSC79357  Calamagrostis foliosa Kenneth Clark 1980-5-10 641 Humboldt Shelter Cove, 5' above mean high tide, E facing coastal bluff Comment
  CAS-BOT-BC185240  Calamagrostis koelerioides Joseph P. Tracy 1935-7-30 14355 Humboldt Salmon Summit. 1767 Comment
  UC552721  Calamagrostis koelerioides Joseph P. Tracy 1935-7-30 14371 Humboldt Salmon Summit 2011 Comment
  UCD57537  Calamagrostis ophitidis R. Tofsrud 1948-9-3 s.n. Humboldt 3-4 miles south of Berry's Summit at road junction near summit of Horse Mountain. 1463 Comment
  UC1714425  Callitriche marginata Joseph P. Tracy 1901-6-30 1207 Humboldt Immediate Vicinity Eureka 0 Comment
  HSC3806  Callitriche trochlearis D. E. Anderson 1965-6-1 3783 Humboldt Small pond along road to Brush Mtn., 0.25 mi. from Hwy. 299 Comment
  CAS-BOT-BC80381  Calocedrus decurrens Carl D. Duncan 1920-9-27 s.n. Humboldt near Hoopa 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-BC488452  Calochortus amabilis Elizabeth Parsons Hawver 1915-6-1 n.s. Humboldt Carlotto Comment
  JEPS17823  Calochortus tolmiei Joseph P. Tracy 1927-5-8 7960 Humboldt Philipsville Phillipsville 121 Comment
  UC1197673  Calochortus tolmiei Joseph P. Tracy 1921-4-24 5466 Humboldt Phillipsville, facing South Fork of Eel River Northern Coast Ranges 121 Comment
  UC180238  Caltha biflora Joseph P. Tracy 1914-7-4 4525 Humboldt High Prairie on Bald Mountain; Northern Coast Ranges. 1066 Comment
  POM273040  Calycadenia ciliosa H. M. Pollard 1945-8-31 s.n. Humboldt Orleans to Somes Bar, east side of Klamath River. Comment
  CAS-BOT-BC275364  Calycadenia truncata var. truncata G. D. Carr 1974-9-12 784 Humboldt 5.3 miles SW of Somes Bar, 2.8 miles NE of Orleans on Highway 96 214 Comment
  UC1196478  Calypso bulbosa Joseph P. Tracy 1918-5-1 4900 Humboldt Northern Coast Ranges, Kneeland Prairie Kneeland Prairie; Northern Coast Ranges, Kneeland Prairie 762 Comment
  UC275535  Calypso bulbosa Joseph P. Tracy 1924-3-30 6631 Humboldt near Bridgeville (Northern Coast Ranges); Northern Coast Ranges 182 Comment
  HSC95802  Calypso bulbosa Kevin Thomas 2004-4-26 15 Humboldt Titlow Hill Rd. Comment
  UC1442908  Calypso bulbosa Theodore F. Niehaus 1970-4-14 913 Humboldt 5 mi w from Yager-Bridgeville Road (on Redwood House Road) Comment
  HSC38746  Calypso bulbosa var. occidentalis J. D. Ackerman 1976-4-27 754 Humboldt 10 mi. E of Blue Lake on road to Maple Creek Comment
  HSC97630  Calyptridium monospermum Cara Witte 2007-6-5 214 Humboldt Near Grouse Mountain. Along Forest Service Road 4N32. Approximately 1 mile south of intersection with 5N04. 1434 Comment
  UC13637  Calyptridium umbellatum Chesnut and Drew 1888-7-21 Humboldt South Fork Mountain Comment
  UC1222150  Calystegia purpurata subsp. purpurata Joseph P. Tracy 1950-6-8 18769 Humboldt near Petrolia (2 mi down river, hills between town and Ocean); near Petrolia Comment
  UC146194  Camassia quamash Joseph P. Tracy July 1908 2903 Humboldt near Low Gap (between Van Duzen and Mad Rivers, opposite Dinsmore's); Northern Coast Ranges 609 Comment
  HSC22497  Camissonia cheiranthifolia W. B. Thompson 1967-7-18 2 Humboldt Comment
  NY679547  Camissonia cheiranthifolia subsp. cheiranthifolia A. A. Heller 1924-7-24 13881 Humboldt At Humboldt County camp, 7 miles S of Trinidad. Comment
  SEINET10462962  Campanula prenanthoides Overton 1979-7-23 OVERTON 9491 Humboldt Near Titlow Hill, on the Willow Creek quad., close to the town of Willow Creek 1280 Comment
  SEINET10462989  Campanula prenanthoides Tracy 1935-7-25 TRACY 14248 Humboldt Trinity Summit, wooded hillsides, lower end of Brett Hole 1585 Comment
  SEINET10873253  Campanula prenanthoides Kildale 1926-6-27 KILDALE 2189 Humboldt Sweasey Lake, McClellan Mountain 823 Comment
  RSA46687  Campanula scouleri Doris K. Kildale 1937-7-18 15143 Humboldt Horse Mt. Comment
  SEINET10840360  Campanula scouleri Marshall 1886-1 MARSHALL s.n. Humboldt Comment
  SEINET7714829  Campanula scouleri Chesnut, Drew 1888-7-19 Humboldt Pilot Ridge Comment
  UC1199216  Capsella bursa-pastoris Joseph P. Tracy 1940-10-15 16757 Humboldt Trinity River Valley, at Willow Creek Willow Creek; Trinity River Valley, Willow Creek 152 Comment
  HSC6623  Capsella bursa-pastoris Francis Winter 1960-3-26 Humboldt Samoa Peninsula, 2 mi. N of Coast Guard Station Comment
  UC1199182  Cardamine californica Joseph P. Tracy 1935-3-10 13732 Humboldt Blue Slide Northern Coast Ranges, Van Duzen River (on Van Duzen River) 91 Comment
  UC1199201  Cardamine californica Joseph P. Tracy 1926-2-28 7375 Humboldt near South Fork Trinity River (Trinity River Valley); Northern Coast Ranges, , nr South Fork T 182 Comment
  RSA734791  Cardamine californica var. cardiophylla LeRoy E. Detling 1935-4-20 1642 Humboldt Lansdale Grove of Redwoods. Comment
  UC1116221  Cardamine californica var. sinuata Joseph P. Tracy 1948-4-11 17963 Humboldt 1 mi e Dyerville (near South Fork Station); e of Dyerville, near South Fork Station 60 Comment
  HSC60299  Cardamine nuttallii Phyllis Krieg 1979-5-8 Humboldt 0.25 mi. E of Old Arcata Rd. on Golf Course Rd., Bayside, next to a house 15 Comment
  HSC28224  Cardamine oligosperma Thomas W. Nelson 1971-4-12 378 Humboldt S spit of Humboldt Bay. Comment
  UCR45400  Cardamine oligosperma Barry Silver 1986-4-23 539 Humboldt North Coast Range, Bair Road, 9.5-10 mi NW of the junction with Hwy 299; Pine Ridge Summit Area 997 Comment
  CAS-BOT-BC37891  Cardamine oligosperma Doris K. Kildale 1927-3-20 2916 Humboldt Philipsville. Smith Fork of Eel River. Comment
  HSC43205  Cardamine oligosperma R. Sutherland 1976-8-13 29 .13876 Humboldt Mouth of Redwood Creek at S Fork of Eel River 87 Comment
  HSC89611  Cardamine oligosperma M. Roantree 1985-5-24 66 Humboldt E side of Trinidad Head Comment
  HSC90418  Cardamine oligosperma Jean Hanson 1980-3-8 27 Humboldt Indian (Gunther) Island, Humboldt Bay, Eureka, W end of island Comment
  UC1199204  Cardamine oligosperma Joseph P. Tracy 1919-3-31 5166 Humboldt along Willow Creek ((Tributary of Trinity River, Humboldt Co) near its mouth); Northern Coast Ranges, along Willow Creek 152 Comment
  HSC58364  Cardamine pachystigma Terry Griswold, Marvin Butler 1979-7-10 6361 Humboldt Near Board Camp Mtn., close to the town of Willow Creek 1372 Comment
  UC303150  Carex aquatilis var. dives Joseph P. Tracy 1925-7-8 7172 Humboldt Bald Mountain, meadow near High Prairie Northern Coast Ranges 1066 Comment
  JEPS109966  Carex arcta Dean W. Taylor 2006-8-3 19575 Humboldt Snow Camp Lake; northwestern end of the lake 1396 Comment
  JEPS25970  Carex arcta Joseph P. Tracy 1934-7-13 13389 Humboldt Dow's Prairie. Comment
  UC79832  Carex arcta Joseph P. Tracy 1926-7-5 7723 Humboldt near Redwood House (on road to head of Yager); Northern Coast Ranges 609 Comment
  UC562628  Carex athrostachya Joseph P. Tracy 1904-7-18 13426 Humboldt Grouse Mountain North Coast Ranges 1524 Comment
  UC1103620  Carex barbarae Joseph P. Tracy 1935-5-19 13808 Humboldt 2 mi N of Myers (South Fork of Eel River) 91 Comment
  UC562312  Carex barbarae Joseph P. Tracy 1929-6-23 8606 Humboldt Trinity River Valley at Willow Creek 152 Comment
  POM289957  Carex bolanderi Lyman Benson 1928-7-11 s.n. Humboldt Weott Ranger Station, S Fork Eel. 61 Comment
  RSA0079896  Carex brevicaulis Joseph P. Tracy 1939-4-27 16228 Humboldt Mouth of Little River. 9 Comment
  HSC75766  Carex concinnoides Denis Kearns 1981-6-24 6 Humboldt Near Cedar Camp 1219 Comment
  HSC76382  Carex concinnoides L. P. Janeway 1982-6-8 2 Humboldt On ridge 1 mi. SE of Horse Mtn. along FS 6N36 1384 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
  UC1103103  Carex deweyana subsp. leptopoda Joseph P. Tracy 1923-6-20 6309 Humboldt White Thorn Valley Northern Coast Ranges 304 Comment
  UC562432  Carex deweyana subsp. leptopoda Joseph P. Tracy 1935-6-8 13937 Humboldt Eureka 60 Comment
  JEPS121644  Carex echinata Jennifer Buck, Danielle Roach 2009-8-20 Humboldt Doehop Fen, South Fork Mountain. Sloping fen on schist, NE aspect. Blake Mountain quadrangle. SFM04A Comment
  POM224512  Carex exsiccata H. C. Cantelow 1936-5-18 s.n. Humboldt 8 miles NE of Orick. Comment
Read comments
Jan 20 2011
  SEINET7558331 Image available Carex exsiccata L. P. Janeway 2003-7-30 7941 Humboldt Grouse Mountain Quad, High North Coast Ranges. On the southwest side of Titlow Hill Road 1.1 km south of Cold Springs. 1426 Comment
  UCD140305  Carex feta K. Esau 1934-5-8 s.n. Humboldt above Fort Seward. 609 Comment
  CAS-BOT-BC21280  Carex fracta Joseph Prince Tracy 1937-7-25 15542 Humboldt Trinity Summit. Head of Hors-Linto Creek. 1371 Comment
  UC562427  Carex laeviculmis Joseph P. Tracy 1933-7-25 12856 Humboldt Grouse Mountain North Coast Ranges 1524 Comment
  CAS-BOT-BC31469  Carex leptopoda Charles Vancouver Piper 1921-5-22 s.n. Humboldt Eureka Comment
  CAS-BOT-BC31467  Carex leptopoda LeRoy Abrams 1922-6-25 8254 Humboldt In spruce forest N of Mad River near Arcata. Comment
  SEINET4292167 Image available Carex microptera Unknown 2003-1 7920 Humboldt High North Coast Ranges. South side (above) Road 5N04, 0.5km northeast of the top of Grouse Mountain. 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
  HSC73962  Carex multicaulis Gail Newton 1980-6-7 126 Humboldt Near Brush Mtn. 1128 Comment
  UC709391  Carex multicaulis Joseph P. Tracy 1941-4-11 16857 Humboldt Willow Creek Trinity River Valley 152 Comment
  UC562664  Carex multicostata Joseph P. Tracy 1935-5-25 13885 Humboldt Dobbyn Creek 152 Comment
  HSC26097  Carex multicostata J. O. Sawyer 1970-6-27 2303 Humboldt 1829 Comment
  CAS-BOT-BC119718  Carex nervina Joseph Prince Tracy 1932-7-16 10627 Humboldt Trinity Summit, Fir woods near Corral Prairie. 1584 Comment
  CAS-BOT-BC119547  Carex nudata A. A. Heller 1923-7-10 13795 Humboldt Along the Eel River between Scotia and Pepperwood Comment
  CHSC40163  Carex nudata L. P. Janeway 1984-4-5 755 Humboldt Along the west edge of Trinity River near the Willow Creek airstrip. 137 Comment
  CAS-BOT-BC119308  Carex obnupta Robert F. Thorne; P. Everett 1965-8-7 35199 Humboldt Big Lagoon, at edge of bog at S end of lagoon. Comment
  CHSC34066  Carex obnupta Joseph P. Tracy 1906-5-13 2459 Humboldt Northern Coast Region of California. Ocean beach at Humboldt Bay. Comment
  HSC104103  Carex obnupta Kyle Brown 2015-4-25 45 Humboldt Arcata, along trail at Mad River 15 Comment
  RSA122793  Carex obnupta H. S. Yates 1936-6-16 5653 Humboldt 0.5 mile southwest of Samoa. Comment
  SEINET7569471 Image available Carex obnupta David Castaner 1989-6-19 10250 Humboldt Gold Bluff Beach, at entrance. Comment
  HSC45390  Carex pachystachya Thomas W. Nelson, Jane P. Nelson 1978-7-2 4406 Humboldt Off FS 2S08 near Pine Mtn., road to Lost Lake 1463 Comment
  HSC45475  Carex pachystachya Thomas W. Nelson, Jane P. Nelson 1978-7-2 4407 Humboldt Along margin of Lost Lake 1433 Comment
  HSC104441  Carex pansa Jeff Barrett, Keleigh Deitsch, Tessa Purdy 2014-4-13 15 Humboldt Samoa Peninsula, Fairhaven, along south side of Bay Street 5 Comment
  CAS-BOT-BC118824  Carex preslii Joseph Prince Tracy 1938-6-9 15878 Humboldt Dobbyn Creek 152 Comment
  CAS-BOT-BC118230  Carex scopulorum var. bracteosa Joseph Prince Tracy 1932-7-17 10675 Humboldt Trinity Summit. Wet meadow heading into Devil's Hole. 1828 Comment
  UC562635  Carex subbracteata Joseph P. Tracy 1936-6-9 14904 1/2 Humboldt Upper Mattole 121 Comment
  CAS-BOT-BC116940  Carex subbracteata Joseph Prince Tracy 1936-6-9 14904 Humboldt Upper Matole. 121 Comment
  CAS-BOT-BC116907  Carex subbracteata var. subbracteata Alice Eastwood; John Thomas Howell 1937-6-22 4725 Humboldt Near Harris Comment
  SEINET3910196  Carex tracyi Thomas W. Nelson, Jane P. Nelson 1978-6-10 4418 Humboldt Eureka Quad. Second growth redwood forest behind Eureka Seventh Day Advent Church on F St.; 0 61 Comment
  CAS-BOT-BC115534  Carex unilateralis Joseph Prince Tracy 1946-5-30 17539 Humboldt Wet gully in grassland near Bridgeville. 457 Comment
  UC249742  Carex vesicaria Joseph P. Tracy 1924-7-4 6705 Humboldt Snow Camp Northern Coast Ranges 1371 Comment
  HSC2874  Carpobrotus edulis C. B. Wolf 1927-8-29 1212 Humboldt Along the coast just S of Cape Mendocino. Comment
  RSA47163  Castilleja affinis Doris K. Kildale 1927-1-17 2985 Humboldt Alton hill. Comment
  JEPS82  Castilleja affinis subsp. affinis Lincoln Constance 1934-3-29 715 a Humboldt Upper Look Prairie South Fork Eel River, Bull Creek Region 365 Comment
  JEPS83013  Castilleja affinis subsp. affinis L. R. Heckard 1984-5-14 1655 Humboldt 2 mi s Phillipsville (just n of Freeway 101 on Avenue of the Giants) 83 Comment
  JEPS35841  Castilleja affinis subsp. litoralis Rimo Bacigalupi, and L. R. Heckard 1964-8-2 8987 Humboldt Trinidad Head, just below lighthouse (above fog horn) Trinidad Head Comment
  JEPS66408  Castilleja affinis subsp. litoralis L. R. Heckard with T. I. Chuang 1971-7-1 2668 Humboldt ca 4 mi n bridge across Big Lagoon (along U.S. Highway 101, n of Big Lagoon) 60 Comment
  UC1222830  Castilleja affinis subsp. litoralis Joseph P. Tracy 1950-6-8 18749 Humboldt 1 mi e Cape Mendocino (s slope of Bear River Ridge, near Capetown); Cape Ridge, Bear River Ridge 152 Comment
  HSC95070  Castilleja ambigua subsp. humboldtiensis Lila Tauzer 2002-5-3 45 Humboldt Arcata Marsh 0 Comment
  JEPS26223  Castilleja ambigua subsp. humboldtiensis Joseph P. Tracy 1909-9-19 3100 Humboldt Samoa North Coast Region, Humboldt Bay Region 0 Comment
  UC604635  Castilleja applegatei subsp. martinii Joseph P. Tracy 1932-5-22 10118 Humboldt between Miranda and Redway (South Fork of Eel River); North Coast Ranges, South Fork of Eel River 91 Comment
  HSC98627  Castilleja applegatei subsp. pinetorum Cara Witte 2008-7-11 875 Humboldt Spike Buck Mountain. Forest Service Road 5N18. 0.5 mi. from intersection with National Forest 1. 1589 Comment
  UC1222835  Castilleja applegatei subsp. pinetorum Joseph P. Tracy 1950-7-2 18974 Humboldt 1 mi s Grizzly Camp (Trinity Summit); Trinity Summit Comment
  UC902261  Castilleja attenuata Joseph P. Tracy 1947-5-24 17694 Humboldt Devil's Canyon; Big Lagoon 152 Comment
  HSC92193  Castilleja mendocinensis E. Mackey 1986-7-6 Humboldt Patrick's Point State Park, on trail to Wedding Rock. Comment
  HSC56065  Castilleja miniata G. L. Clifton, Griswold 1979-7-31 11713 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1805 Comment
  HSC70292  Castilleja pruinosa Gail Newton 1980-7-22 1671 Humboldt Near Devils Backbone 1554 Comment
  UC673104  Castilleja pruinosa Joseph P. Tracy with Dr. F. W. Pennell 1940-7-7 16669 Humboldt Grouse Mt. 1463 Comment
  JEPS10641  Castilleja rubicundula subsp. lithospermoides Joseph P. Tracy 1921-6-12 5815 Humboldt Kneeland Prairie; Northern Coast Ranges 762 Comment
  UC1222459  Castilleja rubicundula subsp. lithospermoides H. E. Parks and Joseph P. Tracy 1930-5-25 8723 Humboldt near Bridgeville 182 Comment
  SEINET7720971  Ceanothus cuneatus Chesnut, Drew 1888-8-1 Humboldt Grouse Creek Comment
  HSC18281  Ceanothus foliosus R. H. Neuns 1950-10-17 141 Humboldt Bear Creek Rd. 6 mi N of Shelter Cove 610 Comment
  CAS-BOT-BC50055  Ceanothus incanus W. R. Dudley 1899-6-20 s.n. Humboldt Near Eel River in woods Comment
  CAS-BOT-BC50056  Ceanothus incanus Carl B. Wolf 1927-8-30 1243 Humboldt Paradise, 5 or 6 mi. N. of Ettersburg Comment
  RSA167407  Ceanothus incanus Joseph P. Tracy 1950-8-4 19249 Humboldt NW slope of the peak, Grasshopper Peak, in Bull Creek State Park at head of Canoe Creek Comment
  UC1174846  Ceanothus incanus P. C. Everett and E. K. Balls 1959-10-26 23977 Humboldt 6 mi se Honeydew (on Old Coast Rd to Ettersburg) 518 Comment
  UC1198005  Ceanothus integerrimus Joseph P. Tracy 1934-4-15 13181 Humboldt Trinity River Valley, at Willow Creek 152 Comment
  HSC36672  Ceanothus oliganthus var. sorediatus R. Sutherland 1975-7-11 2 .11775 Humboldt Along county rd. 305 Comment
  HSC37082  Ceanothus oliganthus var. sorediatus R. Sutherland 1975-5-8 6 .8575 Humboldt County rd. 4 mi SE of Honeydew 259 Comment
  UC203857  Ceanothus oliganthus var. sorediatus Joseph P. Tracy 1918-7-3 4986 Humboldt Wilder Ridge Northern Coast Ranges 457 Comment
  HSC18375  Ceanothus pumilus P. J. Zinke 1950-8-24 156 Humboldt Samuels Elk Ridge Ranch, 8 mi. W of Philipsville 701 Comment
  HSC43187  Ceanothus pumilus R. Sutherland 1976-4-17 2 .17476 Humboldt 549 Comment
  RSA46916  Ceanothus pumilus Doris K. Kildale 1926-4-25 1811 Humboldt Hoopa Mt. 793 Comment
  UCD162862  Ceanothus pumilus J. Bisbee 2014-3-27 828 Humboldt Thomas Rd, 8 miles of south Miranda. 313 Comment
  HSC18331  Ceanothus thyrsiflorus A. E. Inman 1962-5-25 Humboldt S bank of Mad River, 50 yds W of Hwy. 299 bridge Comment
  HSC43217  Ceanothus thyrsiflorus R. Sutherland 1975-5-28 14 .28575 Humboldt Near Tolkan Recreational Site 503 Comment
  UC1198000  Ceanothus thyrsiflorus J. P. Tracy 1901-6-23 1166 Humboldt Eureks 0 Comment
  UC166485  Ceanothus thyrsiflorus Joseph P. Tracy 1909-8-22 3077 Humboldt at Eureka Northern Coast Region, at Eureka 0 Comment
  BLMAR198  Ceanothus velutinus Donald Hazlett 1994-6-7 198 Humboldt King range, near horse Mt. Ridge rd 670 Comment
  CAS-BOT-BC52867  Ceanothus velutinus Joseph P. Tracy 1932-7-17 10698 Humboldt Klamath Mountains - open ground at Corral Prairie 1524 Comment
  LA26771  Ceanothus velutinus S. K. Harris; 1942-6-12 1257 Humboldt Fickle Hill Rd., 5 mi. N and 2 mi. E of Boynton Prairie 630.0 Comment
  CAS-BOT-BC52869  Ceanothus velutinus J. W. Tilden 1947-8-25 s.n. Humboldt Near summit of Red Mountain above Klamath River opposite Shelton Butte 822 Comment
  CDA35679  Ceanothus velutinus Gordon Leppig 1998-6-1 876 Humboldt Horse Mountain. Buck Flat, Titlow Hill Road at Ammon Ridge Road. Comment
  CAS-BOT-BC277177  Centaurea X pouzinii T. C. Fuller 1960-8-25 4975 Humboldt Pacific Lumber Co., Perrott Creek, across Eel River from Dyerville Comment
  HSC98771  Centaurea diffusa Cara Witte 2007-8-9 634 Humboldt Spike Buck Mountain. Forest Service Road 5N18. 1584 Comment
  UC166067  Centaurea melitensis Joseph P. Tracy 1911-7-4 3297 Humboldt along creek, near its mouth Willow Creek (tributary of Trinity River); North Coast Ranges, Trinity River, Willow Creek 182 Comment
  UC302186  Centaurea solstitialis Joseph P. Tracy 1926-8-22 7772 Humboldt McClellan Mountain North Coast Ranges, McClellan Mountain 609 Comment
  RSA424591  Centaurea solstitialis Thomas S. Elias, Barbara A. Elias 1987-8-26 10626 Humboldt Fernbridge, 0.5 mile S of Route 101; along West bank of Eel River, about 0.5 mile N of bridge Comment
  SEINET200746  Centaurium erythraea Joseph P. Tracy 1934-7-9 13347 Humboldt Dobbyn Creek. Comment
  UC562308  Centaurium muehlenbergii Joseph P. Tracy 1934-7-9 13347 Humboldt Dobbyn Creek 152 Comment
  RSA12443  Centaurium muehlenbergii Carl B. Wolf 1934-7-1 5850 Humboldt Along the Eel River and Redwood Highway, 1.2 miles south of F. K. Lane Grove. 61 Comment
  RSA185429  Centaurium muehlenbergii Clare B. Hardham 1965-08 12858 Humboldt South fork of Eel River. Comment
  UC1602124  Centaurium muehlenbergii Joseph P. Tracy 1950-6-23 18873 Humboldt 3 mi n Blocksburg (Alder Point on Larrabee Creek); Larrabee Creek, Alder Point Comment
  UC275461  Centromadia fitchii Joseph P. Tracy 1925-8-23 7247 Humboldt Harris Northern Coast Ranges 914 Comment
  CAS-BOT-BC384897  Cerastium arvense Mrytle Paulson 1918-4-28 s.n. Humboldt Eureka Comment
  UCD97989  Cerastium arvense subsp. strictum W. L. Jepson 1902-6-19 1883 Humboldt Harris to Ft. Seward Ranch Ridge. 1066 Comment
  HSC4100  Cerastium glomeratum D. B. Bader 1963-2-17 41 Humboldt Second of the Clam Beach Lagoons W. of Hwy.101 Comment
  CAS-BOT-BC179481  Cercis occidentalis Henry M. Pollard 1956-8-10 s.n. Humboldt Old Klamath River road near Harley Place, Orleans. Comment
  HSC31807  Cercis occidentalis Steve Selva, Roger Jensen 1974-8-27 81 Humboldt Along Hwy. 299 at Willow Creek Comment
  UC1199058  Cercis occidentalis Joseph P. Tracy 1930-9-8 9176 Humboldt Willow Creek Northern Coast Ranges, Trinity River Valley 152 Comment
  CAS-BOT-BC135533  Cercocarpus betuloides var. betuloides L. R. Abrams; Rimo Bacigalupi 1922-6-25 8226 Humboldt 6 mi. north of Garberville Comment
  CAS-BOT-BC85653  Chamaecyparis lawsoniana Joseph P. Tracy 1927-3-27 7864 Humboldt Willow Creek Canyon 762 Comment
  CAS-BOT-BC85654  Chamaecyparis lawsoniana Doris K. Kildale 1928-10-7 6749 Humboldt Willow Creek Canyon, 7 miles west of Trinity River. Comment
  HSC41651  Chamaecyparis lawsoniana Thomas W. Nelson 1977-10-20 3758 Humboldt Above junction of Maple Creek and Kneeland Rds. 854 Comment
  SEINET11739818  Chamaecyparis lawsoniana F. H. Utech, Sato, T.; Ohara, M. 1990-1 90 -302 Humboldt Six Rivers National Forest, 0.5 mi S of CA 199 on French Hill Rd (USFS Rd 411) 150 Comment
  UC275332  Chamaesyce serpyllifolia Joseph P. Tracy 1923-9-16 6555 Humboldt near South Fork; Northern Coast Ranges, Trinity River Valley 182 Comment
  CAS-BOT-BC166039  Chamerion angustifolium subsp. circumvagum Clarence R. Quick 1959-7-24 59 -30 Humboldt Bee Mt., ca. 12 miles southwest of Orleans Comment
  CAS-BOT-BC460963  Chenopodium atrovirens Joseph P. Tracy 1932-7-13 10500 Humboldt Trinity Summit: open places at Corral Prairie 1584 Comment
  HSC74352  Chimaphila umbellata Gail Newton 1980-6-17 211 Humboldt Near Onion Mtn. 1341 Comment
  UC535746  Chimaphila umbellata Eleanor Armstrong 1173 Humboldt Richardson Grove Comment
  UC1326269  Chimaphila umbellata Milo S. Baker 1947-8-10 11899 Humboldt 15 mi. n.e. Hoopa (near end of forest rd.) 1371 Comment
  UCD117385  Chimaphila umbellata Roman Gankin 1965-8-5 546 Humboldt On Kings Mountain Road, 2.2 miles east of road end, Pacific Range Wilderness Area. Comment
  RSA119360  Chimaphila umbellata subsp. occidentalis S. S. Tillett 1956-7-6 616 Humboldt Along Bar Shanty Road, 9 mi. from Orleans. 945 Comment
  UCD138429  Chlorogalum pomeridianum Joseph P. Tracy 1946-7-7 17611 Humboldt Trinity River Valley at Willow Creek. 152 Comment
  CDA7411  Chrysanthemum segetum B. F. Kemp 1958-4-11 345 -58 Humboldt South Side Mad River near mouth. 0 Comment
  HSC31653  Chrysolepis chrysophylla Timothy B. Devine 1974-5-4 319 Humboldt Junction of Hwy. 299 and Titlow Hill Rd., E facing slope 875 Comment
  RSA46797  Chrysolepis chrysophylla Doris K. Kildale 1927-2-22 2978 Humboldt Kneeland Prarie. 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
  UC665684  Chrysolepis chrysophylla var. minor J. P. Tracy and H. E. Parks 1941-8-28 11541 Humboldt Blake Lookout area; South Fork Mountain 1706 Comment
  UC667996  Chrysolepis chrysophylla var. minor Joseph P. Tracy 1936-8-7 15117 Humboldt 2 mi se Devil's Hole; Trinity Summit 1584 Comment
  UC562732  Cicendia quadrangularis Joseph P. Tracy 1935-5-25 13902 Humboldt Dobbyn Creek 152 Comment
  UC1197341  Cicuta douglasii Joseph P. Tracy 1937-8-12 15662 Humboldt Snow Camp 1402 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
  HSC56141  Circaea alpina subsp. pacifica G. L. Clifton, Griswold 1979-8-1 11966 Humboldt Near Mill Creek Lakes, close to the town of Hoopa 1707 Comment
  HSC99470  Circaea alpina subsp. pacifica K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-14 124 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  SD42326  Circaea alpina subsp. pacifica Carl B. Wolf 1937-8-13 9253 Humboldt North Coast Range, 11 miles East of Hoopa Valley on the new road towards Trinity Summit 1524 Comment
  RSA424924  Cirsium arvense R. D. Goeden, D. W. Ricker 1987-9-2 15 Humboldt Loleta, at bay on Cannibal Road. 3 Comment
Read comments
Apr 8 2011
  HSC98566  Cirsium cymosum var. cymosum Cara Witte 2008-7-30 981 Humboldt Horse Mountain Botanical Area. 1/4 mile east of intersection National Forest 1, and Forest Service Roads 6N36, 6N38. 1426 Comment
  CHSC114324  Cirsium douglasii B. Villegas 1998-8-5 Humboldt Nr. Berry Summit on Titlow Hill Rd., 4.8 mi. S of Hwy 299. Comment
  RSA0070620  Cirsium douglasii var. breweri J. M. Tucker 1948-9-3 1850 Humboldt On Horse Mountain at junction of road to Grouse Mountain and road to Horse Mountain Mine. 1463 Comment
  CAS-BOT-BC279975  Cirsium douglasii var. douglasii John Thomas Howell 1937-7-31 13716 Humboldt 5 miles east of Berry Summit Comment
  UCD130619  Cirsium douglasii var. douglasii Collector Unknown Date Unknown s.n. Humboldt Horse Mt. Comment
  UC129605  Cirsium occidentale var. candidissimum Harley P. Chandler 1901-6-1 1490 Humboldt Klamath River North Coast Ranges, Klamath River 426 Comment
  UC204833  Cirsium occidentale var. venustum Joseph P. Tracy 1918-7-3 4988 Humboldt Wilder Ridge Northern Coast Ranges, Wilder Ridge 762 Comment
  SEINET11833946  Cirsium remotifolium J. P. Tracy 1947-1 17711 Humboldt Carlotta, by old Strong's District School House, 5 mi E of town 61 Comment
  JEPS59312  Cirsium vulgare W. L. Jepson 1936-8-12 17890 Humboldt Philipsville South Fork Eel River, Philipsville Comment
  RSA47110  Cirsium vulgare Doris K. Kildale 1925-9-22 1323 Humboldt Fickle Hill above Arcata Comment
  JEPS43688  Clarkia amoena subsp. huntiana Milo S. Baker 1923-7-20 68 Humboldt Redwood House North Coast Comment
  CAS-BOT-BC164593  Clarkia gracilis subsp. gracilis Harley P. Chandler 1901-6-1 1363 Humboldt Hupa Indian Reservation 152 Comment
  CAS-BOT-BC164595  Clarkia gracilis subsp. gracilis Alice Eastwood; John Thomas Howell 1937-6-23 4802 Humboldt Little Van Duzen River Comment
  JEPS43563  Clarkia purpurea subsp. viminea W. L. Jepson 1902-7-4 1982 Humboldt beneath The Maul Oaks; Hupa Valley Comment
  HSC100898  Claytonia caroliniana var. sessilifolia Carl C. Marshall Jun 1886 280 Humboldt Trinity Summit. Comment
  HSC17755  Claytonia exigua subsp. exigua D. E. Anderson 1963-5-19 2467 Humboldt About 1 mi. S of Kneeland school Comment
  UC275327  Claytonia exigua subsp. glauca Joseph P. Tracy 1923-4-15 6188 Humboldt Redwood Creek;at Berry's Redwood Creek; Northern Coast Ranges 274 Comment
  HSC70775  Claytonia parviflora subsp. parviflora R. York 1980-5-17 552 Humboldt Near Le Perron Peak 1066 Comment
  UC161024  Claytonia parviflora subsp. parviflora Joseph P. Tracy 1911-6-4 3211 Humboldt 5 mi from coast Little River (along Little River); Northern Coast Region 121 Comment
  HSC17684  Claytonia perfoliata D. B. Bader 1963-2-17 36 Humboldt Second of the Clam Beach Lagoons W. of Hwy.101 Comment
  HSC17695  Claytonia rubra subsp. depressa S. J. Hawks 1965-2-12 3 Humboldt N end of Eureka Airport Comment
  UC183593  Claytonia rubra subsp. depressa Joseph P. Tracy 1913-3-23 4027 Humboldt Humboldt Bay Northern Coast Region (Ocean Beach) Comment
  CHSC10779  Claytonia sibirica Lowell Ahart 1968-6-1 Humboldt Near Pepperwood. 45 Comment
  SEINET4087419  Claytonia sibirica O. M. Clark 1932-1 5314 Humboldt South Eureka. Comment
  UC162973  Claytonia sibirica Joseph P. Tracy 1911-6-4 3212 Humboldt 5 mi from coast Little River (along Little River); Northern Coast Region 121 Comment
  UC275282  Claytonia sibirica Joseph P. Tracy 1923-6-20 6330 Humboldt White Thorn Valley; Northern Coast Ranges 304 Comment
  UC83824  Claytonia sibirica Harley P. Chandler May 1901 1090 Humboldt Humboldt Bay; North Coast Ranges 30 Comment
  CAS-BOT-BC443850  Claytonia sibirica Alice Eastwood 1943-6-10 18978 Humboldt Landsdale [Lansdale] Grove, Redwood Highway Comment
  CAS-BOT-BC443903  Claytonia sibirica A. A. Heller 1937-6-10 16274 Humboldt At Bishop Pine Lodge, 3 miles north of Trinidad on U. S. Highway #101. Comment
  HSC34812  Claytonia sibirica David Peters 1975-4-9 4 Humboldt 0.1 mi. W of Plunkett Rd. on Jacoby Creek Rd. Comment
  SD90249  Claytonia sibirica Benjamin C. Stone 1952-6-19 112 Humboldt Humboldt Redwoods State Park; by Founders' Tree 152 Comment
  HSC14644  Clianthus puniceus R. A. Magie 1964-5-3 58 Humboldt 2 mi. N of Trinidad on old Hwy. to Crescent City. Comment
  BLMAR187  Clinopodium douglasii Donald Hazlett 1994-6-7 187 Humboldt King range, near horse Mt. Ridge rd 670 Comment
  HSC95091  Clinopodium douglasii Andrea Pickart 2002-6-30 134 Humboldt Lanphere Dunes Unit, Humboldt Bay National Wildlife Refuge 30 Comment
  JEPS61603  Clintonia andrewsiana W. L. Jepson 1932-8-9 16540 Humboldt Bull Creek 106 Comment
  HSC104432  Clintonia andrewsiana Greg O'Connell 2013-5-21 Humboldt East of Holter Ridge, northeast of Bald Hills Rd. Comment
  HSC99448  Clintonia uniflora K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-7 98 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  UC3541  Clintonia uniflora Mrs. M. H. Manning 1901-1 Humboldt Trinity Summit Comment
  CAS-BOT-BC238027  Collinsia Doris Kildale Gillespie 1931-6-7 10608 Humboldt South Fork Mt., Blake Lookout 1726 Comment
  UC41803  Collinsia grandiflora C. C. Marshall 1888-1 Humboldt unknown Comment
  UC1196749  Collinsia heterophylla Joseph P. Tracy 1948-6-13 18049 Humboldt near Harris 609 Comment
  HSC96243  Collinsia linearis Laurel Goldsmith, Wanda Naylor 2005-6-8 4 Humboldt 1.7 mi. S of Hwy. 299 on Titlow Hill Rd. 980 Comment
  HSC97485  Collinsia linearis Cara Witte 2007-5-23 94 Humboldt Approximately 2 miles from intersection with 4N70 (Grouse Mountain Lookout Road) on 4N32. 1395 Comment
  UC54919  Collinsia linearis Mrs. M. H. Manning 1901-1 Humboldt Hupa Valley Comment
  HSC100659  Collinsia parviflora Carl C. Marshall 21 Humboldt Kneeland Prairie. Comment
  HSC39617  Collinsia parviflora Thomas W. Nelson, Jane P. Nelson 1976-6-15 2721 Humboldt Along old trail above Alder Springs 1585 Comment
  HSC96206  Collinsia parviflora J. McIntire, S. Lyon 2005-6-8 4 Humboldt Cold Springs Camp, 7.4 mi. S of Hwy. 299 on F.S. Rd. NF1 1402 Comment
  JEPS26114  Collinsia parviflora Peter H. Raven with R. Snow 1958-7-20 13634 Humboldt 2.8 mi s jct of Titlow Hill and Friday Ridge rds (near Grouse Mtn) Comment
  UC673102  Collinsia rattanii Joseph P. Tracy 1940-5-17 16552 Humboldt Larrabee Valley 731 Comment
  RSA0117229  Collinsia rattanii S. S. Tillett 1956-7-6 623 Humboldt 12.5 miles from Orleans, along Bar Shanty Road. 1174 Comment
  JEPS25071  Collinsia sparsiflora var. arvensis Joseph P. Tracy 1904-4-3 2007 Humboldt immed. vicinity Eureka 0 Comment
  UC535757  Collomia heterophylla Eleanor Armstrong 1934-5-17 Humboldt Garden Club Grove Comment
  HSC45808  Collomia heterophylla J. P. Smith, Steve Selva 1970-6-30 4139 Humboldt Comment
  HSC102099  Collomia tracyi M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 1002 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  HSC57691  Collomia tracyi G. L. Clifton, Griswold 1979-7-25 10910 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1784 Comment
  JEPS26235  Collomia tracyi Joseph P. Tracy 1939-8-5 16372 Humboldt Dinsmore's Van Duzen River (in sand bar) 737 Comment
  JEPS26243  Collomia tracyi Joseph P. Tracy 1940-7-7 16670 Humboldt on rocky banks Grouse Mt. 1463 Comment
  UC52410  Collomia tracyi Joseph Burtt Davy and Walter C. Blasdale 1899-6-19 5675 Humboldt dry rocky places on summit North Coast Ranges, Hoopa Mountain Comment
  UC907814  Collomia tracyi Joseph P. Tracy 1939-8-5 16372 Humboldt in sand bar Van Duzen River, Dinsmore's 737 Comment
  UC1197344  Conioselinum pacificum Joseph P. Tracy 1913-8-31 4388 Humboldt near Indianola (s end of Humboldt Bay); Northern Coast Region, Humboldt Bay Region 0 Comment
  HSC36436  Conium maculatum John Rehlingl 1974-6-27 Humboldt Along Alliance Rd. Comment
  UC562291  Convolvulus arvensis Joseph P. Tracy 1934-7-15 13407 Humboldt near Fields Landing; North Coast Ranges, around Humboldt Bay 6 Comment
  HSC91919  Conyza canadensis E. Mackey 1987-9-5 Humboldt Patricks Point State Park; in dune area Comment
  RSA249377  Corallorhiza maculata D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-13 5562 Humboldt Westward lower slopes of Black Lassic near Trinity County line 1585 Comment
  CHSC63435  Corallorhiza mertensiana Vernon H. Oswald 1994-6-29 6366 Humboldt Friday Ridge Rd. (Forest Rd. 6N08) 7.3 mi N of Titlow Hill Rd., 0.8 mi S of Brush Mtn Lookout Rd., S of Hwy. 299 and Willow Creek. 975 Comment
  HSC37701  Corallorhiza striata A. Montalvo, J. D. Ackerman 1976-5-16 756 Humboldt 0.25 mi. E of State Hwy. 299 on Chezem Rd., W of Redwood Creek Valley Comment
  JEPS50770  Cordylanthus maritimus subsp. palustris Rimo Bacigalupi 1967-8-13 9307 Humboldt in salicornia salt marsh w of Northwest Pacific Railroad tracks and 1/8 mi n of Arcata Redwood Company plant 4 mi n Eureka (w shore of Arcata Bay); Arcata Bay Comment
  UC604676  Cordylanthus tenuis subsp. viscidus Joseph P. Tracy 1938-8-14 16118 Humboldt mt. slopes w mouth of river; South Fork of Trinity River 304 Comment
  UC936240  Cordylanthus tenuis subsp. viscidus Joseph P. Tracy 1947-8-24 17884 Humboldt ridge top 1 mi w Mud Springs; Trinity Summit 1158 Comment
  RSA286351  Corethrogyne filaginifolia var. californica R. F. Thorne 1974-7-29 45073 Humboldt Samoa Dunes. Comment
  UC183574  Cornus glabrata Joseph P. Tracy 1913-6-21 4251 Humboldt Van Duzen R. just below Low Gap; Northern Coast Ranges, Van Duzen R. 762 Comment
  CAS-BOT-BC212010  Cornus nuttallii Doris K. Kildale 1925-8-13 1134 Humboldt Willow Creek Flat, near bluff on Trinity River 152 Comment
  HSC97510  Cornus nuttallii Cara Witte 2007-5-21 72 Humboldt Along National Forest 1. Approximately 1 mile north of White Oak Opening. 1272 Comment
  HSC99585  Cornus nuttallii K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-8-10 250 Humboldt Near North Trinity Mtn, Government Trail, near Box Camp, Six Rivers National Forest. 1460 Comment
  UC1196901  Cornus nuttallii Joseph P. Tracy 1935-4-20 13786 Humboldt Trinity R. Valley at Willow Creek; Trinity R. Valley 152 Comment
  UC154072  Cornus nuttallii Joseph Burtt Davy and Walter C. Blasdale 1899-6-19 5635 Humboldt Hoopa Mt. North Coast Ranges, Hoopa Mt. Comment
  UC205636  Cornus nuttallii Joseph P. Tracy 1919-9-14 5213 Humboldt near its mouth Willow Creek - Northern Coast Ranges, Willow Creek (a tributary of Trinity) Comment
  UC249598  Cornus sericea subsp. sericea Joseph P. Tracy 1921-9-4 5949 Humboldt Trinity R. Valley near Willow Creek; Northern Coast Ranges, Trinity R. Valley 152 Comment
  CAS-BOT-BC210537  Cornus sessilis L. B. Kildale 1931-8-9 s.n. Humboldt Three Creeks on Willow Creek road Comment
  HSC6423  Cornus sessilis H. E. Parks, S. T. Parks 1941-7-5 11492 Humboldt Horse Linto Creek. Comment
  JEPS50175  Cornus sessilis W. L. Jepson 1902-7-11 2014 Humboldt river bank of S. Fork Trinity R., Martin's Ranch S. Fork Trinity R., Martin's Ranch Comment
  UC1199212  Coronopus didymus Joseph P. Tracy 1946-5-30 17540 1/2 Humboldt vicinity of Carlotta 30 Comment
  UC198569 Image available Corylus californica Joseph P. Tracy 1917-9-2 4842 Humboldt Grouse Mountain Northern Coast Ranges; Grouse Mt., Humboldt Co. 1524 Comment
  HSC3477  Corylus cornuta subsp. californica Curt M. Johnson 1966-3-11 117 Humboldt Along Bull Creek Rd. 6 mi. W of Weott 140 Comment
  HSC70453  Corylus cornuta subsp. californica Gail Newton 1980-7-20 1642 Humboldt Near Bell Swamps 1426 Comment
  UCD110083  Corylus cornuta subsp. californica M. Risling 1975-2-15 s.n. Humboldt ca. 3 miles from Hwy 96, along Tish Tang Road. Comment
  RSA1364  Corylus cornuta var. californica C. B. Wolf 1929-08 1424 Humboldt Stephens Grove, Redwood Highway. Comment
  RSA730001  Cotoneaster pannosus Peter F. Zika 2007-7-20 263324 Humboldt NCo, North Coast: Lynda Lane near high school, S end of Big Lagoon. 20 Comment
  SEINET3817853  Cotula coronopifolia C. L. Hitchcock, J. S. Martin 1939-7-14 5434 Humboldt Pool on cliff above pier at shelter cove Comment
  UC665548  Cotula coronopifolia H. E. Parks Sep 1941 24211 Humboldt Little River State Park Comment
  HSC5434  Cotula coronopifolia R. D. Modafferi 1965-3-14 12 Humboldt 1.4 mi. S of Trinidad on old Hwy. 101 0 Comment
  HSC87175  Crassula aquatica K. Grenier 1988-11-16 291 Humboldt North Spit of Humboldt Bay Comment
  UC492243  Crassula connata var. subsimplex Joseph P. Tracy 1931-3-26 9293 Humboldt along Van Duzen R. Alton; North Coast Ranges, Van Duzen R., Alton 30 Comment
  CAS-BOT-BC290340  Crepis acuminata Joseph P. Tracy 1935-7-30 14382 Humboldt Salmon Summit 2103 Comment
  HSC57181  Crepis acuminata Griswold, Butler 1979-7-10 6227 Humboldt Near Kinsey Ridge, close to the town of Willow Creek 1244 Comment
  UC1051583  Crepis capillaris Joseph P. Tracy 1949-9-26 18229 Humboldt 6 mi se Arcata; Fickle Hill 609 Comment
  UCR121767  Crepis capillaris George K. Helmkamp, E. A. Helmkamp 2001-7-8 6998 Humboldt North Coast, north spit of Samoa Peninsula, 0.5 mi north of CA Hwy 255 bridge over Humboldt Bay 6 Comment
  CAS-BOT-BC290584  Crepis capillaris Doris K. Kildale 1925-7-17 1073 Humboldt Cutten Tract - Eureka Comment
  HSC104066  Crepis monticola L. Hoover 2009-6-25 Humboldt Six Rivers National Forest; Buck Mtn., FS Rd. 1N08 Comment
  JEPS37502  Crepis pleurocarpa Joseph P. Tracy 1935-7-28 14332 Humboldt Brett Hole Trinity Summit (head) 1828 Comment
  HSC41196  Cryptantha affinis Thomas W. Nelson 1977-7-4 3611 Humboldt Along road N of Alder Springs. 1524 Comment
  HSC57921  Cryptantha affinis Gilbert Muth 1979-7-31 11542 Humboldt Near Tish Tang A Tang Creek, S Fork, close to the town of Hoopa 1417 Comment
  HSC58175  Cryptantha affinis G. L. Clifton, Griswold 1979-8-2 12257 Humboldt Near Oregon Creek, close to the town of Hoopa 1663 Comment
  UC526804  Cryptantha affinis Joseph P. Tracy 1932-7-11 10398 Humboldt Corral Prairie Klamath Mountains, Trinity Summit 1524 Comment
  UC594155  Cryptantha flaccida S. K. Harris, J. P. Tracy, and H. S. Yates 1936-6-17 3424 Humboldt nw slopes Buck Mountain 822 Comment
  JEPS67665  Cryptantha intermedia W. L. Jepson 1902-7-14 2025 Humboldt Hupa Valley Comment
  HSC98680  Cuscuta californica Cara Witte 2008-7-2 793 Humboldt National Forest Road 1; 5 miles south of intersection with 5N04. Before cattle guard crossing. 1406 Comment
  UC562671  Cuscuta californica Joseph P. Tracy Jul 16 1930-Jul 19 1930 8912 Humboldt near McKay Camp; Northern Coast Ranges, South Fork Mountain 1676 Comment
  UC906743  Cuscuta californica Joseph P. Tracy 1947-7-5 17777 Humboldt 1 mi w Mud Springs; Trinity Summit 1158 Comment
  UC35079  Cuscuta indecora Chesnut and Drew 1888-7-23 Humboldt Hy-Am-Pum Comment
  UC203976  Cuscuta suaveolens Joseph P. Tracy 1918-9-29 5113 Humboldt 8 mi above mouth of the South Fork of Eel River (Myers Ranch); Northern Coast Ranges, South Fork of Eel River 60 Comment
  UC562480  Cuscuta subinclusa Joseph P. Tracy 1924-7-20 6736 Humboldt Brannan Mt., on Willow Creek Road Brannan Mt. 1005 Comment
  UC154093  Cyclospermum leptophyllum Joseph P. Tracy 1900-9-10 944 Humboldt near Hydesville; Northern Coast Region 60 Comment
  RSA67017  Cynoglossum grande E. K. Balls 1951-5-9 16516 Humboldt ca. 5 miles S of Richardson s Grove, Highway 101. Comment
  UC525558  Cynoglossum grande Joseph P. Tracy 1927-6-12 8154 Humboldt lower slopes Horse Mt.; Northern Coast Ranges, Horse Mt. 1219 Comment
  SEINET11696011  Cynosurus cristatus Unknown 1956-7-19 s.n. Humboldt 4.5 mi NW of Petrolia Comment
  JEPS26624  Cynosurus echinatus Ira L. Wiggins 1957-6-21 14142 Humboldt 1 mi. s. Garberville (e. side of rd.) Comment
  HSC7210  Cyperus eragrostis D. E. Anderson 1963-9-29 2848 Humboldt Fish Lake Comment
  RSA53797  Cyperus esculentus Henry M. Pollard 1945-9-4 s.n. Humboldt Near Camp Creek, Klamath River Canyon. Comment
  UC1103640  Cyperus squarrosus Joseph P. Tracy 1930-10-19 9230 Humboldt Alton to Fortuna; Eel R. 15 Comment
  HSC98411  Cyperus strigosus Edward G. Kynoch, Jr. 1966-9-23 407 Humboldt Near Trinity River, and Willow Creek 142 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
  RSA137327  Cystopteris fragilis I. L. Wiggins 1957-6-21 14138 Humboldt On east side of road, 1 mile south of Garberville Comment
  CHSC19747  Cytisus scoparius Gary J. Stebbings 1970-2-2 1 Humboldt Along Big Lagoon Park road across from the store. Comment
  HSC9552  Danthonia californica J. P. Tracy 1927-7-4 8234 Humboldt Lone-Star Creek, Iagua. 610 Comment
  SEINET6847453  Danthonia californica Wanda P. Vestal, A. G. Vestal 1937-6-22 s.n. Humboldt Kneeland prairie, about 4 miles southeast of Kneeland. Comment
  UCD60966  Danthonia californica var. americana R. Tofsrud 1948-9-3 Humboldt Border of Clear Lake, on road from Horse Mt. to Grouse Mt. 1371 Comment
  RSA10088  Danthonia unispicata Joseph P. Tracy 1926-6-20 7611 Humboldt Horse Mountain 1402 Comment
  UC1541540  Danthonia unispicata J. P. Tracy, H. E. Parks 1934-6-14 11028 Humboldt Horse Mountain 1371 Comment
  UC169898  Datisca glomerata Harley P. Chandler June, 1901 1518 Humboldt Klamath River; North Coast Ranges, Klamath River 426 Comment
  JEPS12211  Datura stramonium W. L. Jepson 1932-7-28 16436 Humboldt Dyerville 88 Comment
  JEPS12214  Datura stramonium Lincoln Constance 1934-6-18 897 Humboldt border N. Dyerville Flat (R.R. Sta and P.O., Bull Creek region, near South Fork Eel River); South Fork Eel River, Bull Creek Region Comment
  RSA43886  Daucus carota H. M. Pollard 1948-8-7 s.n. Humboldt Near Orleans Comment
  CAS-BOT-BC10315  Delphinium hesperium Elizabeth Parsons Hawver 1915-6-1 s.n. Humboldt Carlotta Comment
  CAS-BOT-BC9954  Delphinium nudicaule Doris K. Kildale 1928-6-24 5288 Humboldt Horse Mountain 853 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
  UC249645  Delphinium nuttallianum Joseph P. Tracy 1922-4-30 6029 Humboldt near Willow Creek; Northern Coast Ranges, Trinity River Valley 152 Comment
  JEPS8447  Delphinium nuttallianum Rimo Bacigalupi with J. P. Tracy, L. Constance, R. Moran, R. L. Rodriguez, and S. Carlquist 1951-6-14 3411 Humboldt 0.5 mi w Snow Camp (ridge between Mad River and Redwood Creek); Bald Mountain ridge 1432 Comment
  CAS-BOT-BC121967  Delphinium trolliifolium Elizabeth Parsons Hawver 1915-6-1 s.n. Humboldt Carlotta Comment
  SEINET12099650  Delphinium trolliifolium J. P. Tracy 1951-1 19559 Humboldt halfway between Snow Camp and Twin Lakes (at Charley Preston's old gate near the road) Comment
  UC1196338  Delphinium trolliifolium Joseph P. Tracy 1933-5-20 12269 Humboldt hillsides Northern Coast Ranges, Bear River Ridge 609 Comment
  UC34132  Deschampsia cespitosa subsp. beringensis Joseph Burtt Davy and Walter C. Blasdale Aug. 1899 6213 Humboldt Eureka Comment
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Sep 27 2007
  UC60234  Deschampsia cespitosa subsp. beringensis Joseph Burtt Davy and Walter C. Blasdale Aug. 1899 6214 Humboldt Eureka Comment
  HSC40327  Deschampsia danthonioides Thomas W. Nelson, Jane P. Nelson 1976-6-22 2860 Humboldt Bog along road to Goat Hill. 1646 Comment
  LA10879  Deschampsia danthonioides Joseph P. Tracy; 1935-6-23 13969 Humboldt 1066 Comment
  UC1103222  Deschampsia danthonioides Joseph P. Tracy 1932-5-26 10276 Humboldt Fort Baker Ranch North Coast Ranges, Fort Baker Ranch 762 Comment
  CAS-BOT-BC174313  Deschampsia elongata J. O. Sawyer; R. J. Cole 1977-7-3 3019 Humboldt Environs of Mud Spring. Big Hill Road (F.S. 8N01) 1524 Comment
  HSC58666  Deschampsia elongata G. L. Clifton, Griswold 1979-8-1 12080 Humboldt Near High Spring, close to the town of Hoopa. 1798 Comment
  RSA293158  Deschampsia elongata J. P. Smith 1977-7-3 9245 Humboldt Six Rivers National Forest. Along the road to Onion Lake, just above Blue Lake. 976 Comment
  HSC8356  Dicentra formosa Eugene Andreuccetti 1964-4-11 18 Humboldt 1/2 mi. S of Garberville on Hwy. 101 Comment
  JEPS9734  Dicentra pauciflora Joseph P. Tracy 1933-7-16 12776 Humboldt near McKay Camp (South Fork Mountain); North Coast Ranges, South Fork Mountain 1676 Comment
  RSA152289  Dichanthelium acuminatum var. fasciculatum Joseph P. Tracy 1942-7-18 17286 Humboldt 1/2 mile N. E of Garberville 30 Comment
  JEPS506  Dichelostemma capitatum Joseph P. Tracy 1927-5-8 7966 Humboldt Phillipsville 121 Comment
  CAS-BOT-BC483664  Dichelostemma capitatum Elizabeth Parsons Hawver 1915-6-1 s.n. Humboldt Carlotta Comment
  HSC3000  Dichelostemma capitatum subsp. capitatum Paul Shields May 1955 Humboldt Horse Mountain Comment
  HSC12535  Dichelostemma congestum J. Allen DeCou 1899-1 Humboldt Willow Creek Comment
  HSC97967  Dichelostemma congestum Cara Witte 2007-7-2 392 Humboldt Cold Spring. 1/2 mile south of Titlow Hill. 1406 Comment
  SEINET200696  Dichelostemma ida-maia J. P. Tracy 1901-6-23 1184 Humboldt Immediate vicinity of Eureka near Ryans Slough Hill 0 Comment
  CAS-BOT-BC501016  Dichelostemma ida-maia Lyman Benson 1930-7-18 2188 Humboldt West of Willow Creek, Seaward N. Coast, west of Trinity River 457 Comment
  SD90195  Digitalis purpurea Benjamin C. Stone 1952-6-25 137 Humboldt 15 miles south of Klamath. 14 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
  SEINET13751974 Image available Diplacus aurantiacus H. E. Parks, S. T. Parks 1951-1 Humboldt Along bay shore near landing. Trinidad. Comment
  CAS-BOT-BC153237  Diplacus kelloggii S. K. Harris; J. P. Tracy; H. S. Yates 1936-6-17 3406 Humboldt Burr Valley, on Buck Mountain 1036 Comment
  SEINET8245388  Diplacus kelloggii Unknown 1942-5-12 2894 Humboldt at junction of Klamath and Salmon rivers, 1 mile south of Somes Bar. 152 Comment
  UC1222543  Disporum smithii Joseph P. Tracy 1951-6-14 19418 Humboldt Snow Camp 1402 Comment
  UC535741  Disporum smithii Eleanor Armstrong 1169 B Humboldt Richardson Grove Comment
  UCR179281  Disporum smithii R. G. Swinney 1968-3-28 234 Humboldt East of Humboldt State College, Arcata 152 Comment
  SEINET4170363  Disporum smithii Unknown 1933-5-12 3413 Humboldt Dyerville, South Fork of the Eel River Comment
  SEINET4170370  Disporum smithii Unknown 1933-5-21 12209 Humboldt McClellan Mountain 671 Comment
  CDA18208  Distichlis spicata G. D. Barbe, T. C. Fuller 1974-6-17 1835 Humboldt North Coast Ranges; Lower Pacific Drive, S of sewage plant, W of golf course, at Sail Court, Shelter Cove. 60 Comment
  UCD64617  Distichlis spicata var. stolonifera Malcolm A. Nobs; S. Galen Smith 1949-8-3 1178 Humboldt Around Fields Landing. Comment
  JEPS8451  Dodecatheon jeffreyi Rimo Bacigalupi with J. P. Tracy, L. Constance, R. Moran, R. L. Rodriguez, and S. Carlquist 1951-6-14 3418 Humboldt edge of meadow at Snow Camp btw Mad River and Redwood Creek (Bald Mountain Ridge) (Ridge between Mad River and Redwood Creek (Bald Mountain Ridge)) 1432 Comment
  UC179965  Dodecatheon jeffreyi Joseph P. Tracy 1914-7-4 4535 Humboldt High Prairie on Bald Mountain Northern Coast Ranges, High Prairie on Bald Mountain 1066 Comment
  RSA181633  Downingia elegans Doris K. Niles 1940-7-20 2 Humboldt Summit of Friday Ridge road, Grouse Mt. 1829 Comment
  POM175550  Downingia elegans var. corymbosa F. W. Peirson 1923-7-10 3871 Humboldt About 6 miles N of Garbersville. Comment
  RSA178586  Downingia yina Joseph P. Tracy 1951-6-21 19527 Humboldt back of Everett Beck House (formerly George Fray) bed of former Goose Lake, Hydesville. Comment
  RSA249311  Drymocallis glandulosa var. reflexa D. E. Anderson 1972-6-14 5618 Humboldt Mt. Lassic and 2 smaller peaks to immediate E. 1768 Comment
  CAS-BOT-BC71053  Dryopteris expansa John Thomas Howell; Gordon H. True; Lewis S. Rose 1972-6-5 48820 Humboldt Patrick Point State Park Comment
  UC62809  Dryopteris expansa Marshall A. Howe 1896-5-30 Humboldt Eureka Comment
  UC180503  Echinochloa crus-pavonis Joseph P. Tracy 1914-10-11 4634 Humboldt Eureka; Northern Coast Region 0 Comment
  UC666880  Eleocharis pachycarpa H. E. Parks and Joseph P. Tracy 1931-6-7 9569 Humboldt Trinidad 60 Comment
  UCD49814  Eleocharis pachycarpa S. Galen Smith; Malcolm A. Nobs 1949-8-11 1346 Humboldt Marshes on eastern side of Big Lagoon, Humboldt County. Comment
  POM87948  Eleocharis palustris Le Roy Abrams 8267 Humboldt Big Lagoon, south of Orick. Comment
  HSC58814  Eleocharis quinqueflora G. L. Clifton, Griswold 1979-8-1 12054 Humboldt Near N Trinity Mtn., close to the town of Hoopa. 1798 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
  HSC58674  Elymus elymoides var. elymoides Gilbert Muth 1979-8-1 12153 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1677 Comment
  HSC9718  Elymus glaucus D. E. Anderson, T. O. Preston 1963-3-1 19 Humboldt Near bridge over Supply Creek. Comment
  HSC98574  Elymus glaucus subsp. glaucus Cara Witte 2008-8-5 984 Humboldt Buck Flat. Intersection of National Forest 1 and Forest Service Road 5N01. 1569 Comment
  HSC99017  Elymus lanceolatus subsp. lanceolatus Cara Witte 2008-7-14 893 Humboldt Horse Mountain Botanical Area. Forest Service Road 6N18. At end of the road. 1407 Comment
  BLMAR20  Elymus multisetus Brad Barr June, 1982 20 Humboldt King range, West facing slope of spanish ridge Comment
  HSC70693  Elymus multisetus Gail Newton 1980-7-15 1560 Humboldt Near Sims Mtn. 1311 Comment
  UC38212  Elymus multisetus Joseph Burtt Davy 1899-6-19 5661 Humboldt Hoopa Mt. Comment
  UC1040574  Elymus trachycaulus L. T. Burcham 1956-7-19 342 Humboldt Northeast Capetown; along roadside and on adjacent sheep range. 365 Comment
  UC526802  Elytrigia repens Joseph P. Tracy 1925-9-13 7267 Humboldt Eel River North Coast Ranges (mouth, on river bank) 6 Comment
  RSA257605  Empetrum eamesii subsp. hermaphroditum G. D. Wallace 1975-8-22 11486 Humboldt NW of Trinidad, on NW facing exposure of Megwil Point, just N of Elk Head, N of College Cove, sand bluffs in sight of Green Rock to the NW. Comment
  UC1122552  Epilobium brachycarpum H. L. Person 1932-8-8 Humboldt Freshwater Eureka Quadrangle Comment
  CDA38060  Epilobium brachycarpum T. C. Fuller 1962-8-6 9361 Humboldt Near Hwy 299 to Blue Lake, 2.6 miles east of Bald Mtn. Summit Rd., 1 miles west of Green Point School. 0 Comment
  JEPS31511  Epilobium campestre Joseph P. Tracy 1938-7-5 16004 Humboldt open flat by old Strong's District School House (in dried pond bed, 5 mi e of town); Carlotta 45 Comment
  UC668303  Epilobium campestre Joseph P. Tracy 1938-7-5 16004 Humboldt 5 mi e Carlotta; Strong's District School House 45 Comment
  CAS-BOT-BC166892  Epilobium canum subsp. latifolium Doris K. Kildale 1925-9-10 1110 Humboldt Bug Creek 792 Comment
  HSC55317  Epilobium canum subsp. latifolium Griswold, Butler 1979-7-10 7102 Humboldt Near Board Camp Mtn., close to the town of Willow Creek. 1350 Comment
  JEPS31529  Epilobium ciliatum subsp. ciliatum Lincoln Constance 1934-5-31 765 Humboldt Bull Cr. flat South Fork Eel River, Bull Creek region, Bull Creek (along n side of creek from w boundary of Park to Grasshopper Pk. (Squaw Cr. rd.)) Comment
  UC198608  Epilobium ciliatum subsp. ciliatum Joseph P. Tracy 1916-8-20 4753 Humboldt Eureka Northern Coast Ranges 0 Comment
  UC583054  Epilobium ciliatum subsp. ciliatum P. A. Munz 1936-8-13 14380 Humboldt 10 mi w Willow Creek Comment
  HSC49645  Epilobium ciliatum subsp. glandulosum J. P. Smith, Steve Selva 1970-6-30 4138 Humboldt Comment
  HSC16346  Epilobium ciliatum subsp. watsonii D. E. Anderson 1961-8-25 1742 Humboldt 1.5 mi. S of Trinidad Comment
  UC505125  Epilobium densiflorum Joseph P. Tracy 1932-8-21 10361 Humboldt Three Cabins Northern Coast Ranges, Chaparral Mountain (lower w foothills of mt.) 457 Comment
  HSC102565  Epilobium glaberrimum subsp. glaberrimum M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-29 1552 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1579 Comment
  HSC44595  Epilobium hallianum Brad Klipfel 1973-7-15 191 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  UC314612  Epilobium hallianum Joseph P. Tracy 1923-5-13 6204 Humboldt Bridgeville Northern Coast Ranges 228 Comment
  UCR45444  Epilobium minutum N. Meiselman, M. Bransom, D. Brown, Ron Hildebrandt 1986-4-19 28 Humboldt North Coast Range, Horse Mountain, 0.5 mi. down Titlow Road from Ski Area 1372 Comment
  JEPS31474  Epilobium minutum Joseph P. Tracy 1926-6-20 7617 Humboldt Horse Mountain Northern Coast Ranges (along streamlets) 1524 Comment
  UC562515  Epilobium oregonense Joseph P. Tracy 1935-7-26 14260 Humboldt Water Dog Lakes Trinity Summit (meadows) 1828 Comment
  UC198612  Epilobium torreyi Joseph P. Tracy 1916-6-19 4728 Humboldt forks of Dobbyn Creek; Northern Coast Ranges 182 Comment
  RSA70055  Epipactis gigantea Frank W. Peirson 1923-7-9 3697 Humboldt State Park on Eel River Comment
  HSC44040  Equisetum hyemale subsp. affine Thomas W. Nelson, Jane Nelson 1977-4-23 3343 Humboldt N side of Ridge between Bear and Blanket Creeks 1463 Comment
  SEINET200603 Image available Equisetum laevigatum J. P. Tracy 1932-5-11 9966 Humboldt Samoa 6 Comment
  CHSC7104  Equisetum telmateia K. Cox 1969-4-1 6 Humboldt Patrick's Point St. Pk. At foot of Agate Beach trail. 1 Comment
  HSC882  Equisetum telmateia subsp. braunii D. E. Anderson 1962-2-10 1920 Humboldt 1.5 mi. S of Trinidad Comment
  JEPS25329  Equisetum telmateia subsp. braunii Paul C. Hutchison 1961-3-3 885 Humboldt ca. 1/2 mi s Benbow (S Fork Eel River, along U.S. Hwy. 101) Comment
  HSC38349  Erechtites glomeratus Peter Sorensen 1976-7-14 Humboldt N Spit Comment
  HSC78606  Erechtites glomeratus L. P. Janeway 1984-5-16 793 Humboldt N Spit of Humboldt Bay, W side of Samoa Rd. just N of the boat ramp 3 Comment
  RSA20844  Erechtites glomeratus C. B. Wolf 1937-6-18 8884 Humboldt Table Bluff between Humboldt Bay and Eel River 30 Comment
  HSC40254  Erechtites minimus Linda M. Barker 1976-8-2 1677 Humboldt Lanphere- Christensen Dunes, 3 mi. W of Arcata Comment
  HSC5496  Erechtites minimus Paul Shields Aug 1955 Humboldt 5 mi. W of Weott Comment
  POM318607  Erechtites minimus Patricia Wilder 1968-8-21 4379 Humboldt Big Lagoon Park, just west of U.S. 101 15 Comment
  UC581712  Erigeron aliceae Joseph P. Tracy 1933-8-30 13038 Humboldt Grouse Mountain North Coast Ranges, Grouse Mountain 1615 Comment
  SEINET5708560 Image available Erigeron aliceae Lowell E. Urbatsch, Patricia B. Cox; Alan W. Lievens 1988-1 6106 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. Take the leafhand 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 from the road leading to Waterman Ridge and Willow Creek). On this road (7N04), travel 1.5 miles to another fork; continue on 7N04 (the left fork) for 7.4 miles. At this point, take 7N04N, the road to Groves Prairie. The collections site is a short distance up this road. Comment
  POM174061  Erigeron biolettii Joseph P. Tracy 1918-7-6 5052 Humboldt South Fork of Eel River near the Humboldt-Mendocino County Line 152 Comment
  CAS-BOT-BC300370  Erigeron eatonii var. plantagineus Thomas W. Nelson; James L. Nelson 1980-6-10 5395 Humboldt North Coast Ranges. Jack Rabbit Valley. Along Swayback Ridge 4-wheel drive road 1 mile south of junction with Forest Service road 1493 Comment
  CAS-BOT-BC296110  Erigeron foliosus var. confinis Marcus E. Jones 1931-7-16 29149 Humboldt Junction east of Arcata Comment
  RSA21324  Erigeron foliosus var. confinis C. B. Wolf 1937-8-13 9218 Humboldt North coast range, 8 mi. east of Hoopa Valley on new road towards Trinity summit. 1220 Comment
  HSC5524  Erigeron glaucus J. W. Johnson 1961-8-17 1036 Humboldt Dune fields of W.M. Lanphere Farm, Samoa Peninsula Comment
  POM289039  Erigeron glaucus Lyman Benson 1929-7-19 1850 Humboldt Mouth of Matole River. Comment
  SBBG52999  Erigeron glaucus J. D. Hobson -Jul-1966 Humboldt beach and cliff at S end of sand spit forming Eureka Harbor, 10 mi S of Eureka Comment
  CAS-BOT-BC308848  Erigeron glaucus Doris K. Kildale 1926-5-15 1975 Humboldt Fleener Creek Comment
  UC175210  Erigeron glaucus Joseph P. Tracy 1913-9-21 4409 Humboldt dunes of ocean beach at Humboldt Bay Comment
  UC1199406  Erigeron inornatus var. inornatus Joseph P. Tracy 1935-7-27 14280 Humboldt open places at Corral Prairie; Trinity Summit 1584 Comment
  HSC5562  Erigeron inornatus var. inornatus M. H Manning 1901-7-25 311 Humboldt Bald Hill near Hoopa Comment
  CAS-BOT-BC214579  Erigeron philadelphicus W. R. Dudley 1899-6-19 s.n. Humboldt Scotia Comment
  CAS-BOT-BC214585  Erigeron philadelphicus Volney Rattan 1878-1-1 s.n. Humboldt Unspecified Comment
  UC573410  Erigeron philadelphicus var. philadelphicus H. S. Yates 1936-6-23 5855 Humboldt 2 mi se of mouth Mad River; Eureka Quad. 30 Comment
  SDSU3945  Erigeron philadelphicus var. philadelphicus D. F. Howe 1963-7-8 3621 Humboldt 8.2 miles west of Bridgeville on Cal. 36, Van Duzen River. 91 Comment
  UCD132041  Erigeron philadelphicus var. philadelphicus P. B. Kennedy 1929-6-12 s.n. Humboldt Eureka. Comment
  UC31538  Erigeron supplex H. N. Bolander 1863-1 4754 Humboldt Comment
Read comments
Feb 20 2007
  SEINET10866398  Eriogonum Mary Susan Taylor 1990-8-22 Taylor 6082 Humboldt Samoa Recreation Area on Samoa Peninsula, Staging Area, Eureka. Coastal scrub in ORV area. Comment
  UCR37906  Eriogonum compositum D. K. Imper 1982-7-2 1411 Humboldt Near Connely Creek, N Fork 1493 Comment
  UC183632  Eriogonum compositum var. compositum Joseph P. Tracy 1913-6-22 4262 Humboldt opposite Buck Mountain (Dinsmore's Ranch); Van Duzen River valley 762 Comment
  CAS-BOT-BC259155  Eriogonum latifolium A. A. Heller 1924-7-22 13873 Humboldt At Samoa opposite Eureka Comment
  HSC43069  Eriogonum latifolium J. P. Smith 1971-10-6 4982 Humboldt End of Murray Rd. in McKinleyville. Comment
  RSA21010  Eriogonum latifolium Carl B. Wolf 1937-9-12 9331 Humboldt Clam Beach 8 Comment
  SD38692  Eriogonum latifolium Edith A. Purer 1932-7-30 4669 Humboldt South of Orick, sand dunes Comment
  UC1198149  Eriogonum latifolium Joseph P. Tracy 1933-8-25 12998 Humboldt Centerville 6 Comment
  CAS-BOT-BC259153  Eriogonum latifolium Arthur Menzies 1961-9-3 s.n. Humboldt Samoa, near Arcata Comment
  POM188360  Eriogonum luteolum Marcus E. Jones 1931-7-16 28862 Humboldt Junction, East of Arcata. Comment
  CAS-BOT-BC261498  Eriogonum nudum var. nudum L. R. Abrams 1916-7-11 6003 Humboldt Between Blocksberg and Bridgeville Comment
  HSC47965  Eriogonum nudum var. nudum Brad Klipfel 1974-8-2 542 Humboldt Horse Mtn. Comment
  HSC43080  Eriogonum nudum var. nudum Brad Klipfel 1973-7-31 233 Humboldt N Trinity Mtn. 1860 Comment
  CAS-BOT-BC261726  Eriogonum nudum var. oblongifolium Doris K. Kildale 1925-6-28 813 Humboldt Kneeland Prairie 762 Comment
  UC176685  Eriogonum nudum var. oblongifolium Joseph P. Tracy 1912-7-21 3761 Humboldt Alton Norther Coast Ranges, Alton 30 Comment
  POM160765  Eriogonum roseum Joseph P. Tracy 1923-9-10 6547 Humboldt Local on sand bar Trinity River Valley, near the South Fork. Comment
Read comments
Aug 15 2009
  HSC54720  Eriogonum umbellatum Overton, Butler 1979-7-26 10095 Humboldt Near Cold Spring, close to the town of Willow Creek 1417 Comment
  HSC99560  Eriogonum umbellatum var. argus K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-8-10 225 Humboldt Near North Trinity Mtn, 11. 9 mi east of Hoopa on Big Hill Rd (8N01), at Box Camp, Six Rivers National Forest. 1433 Comment
  UC55396  Eriogonum umbellatum var. argus Mrs. M. H. Manning 1900-1 Humboldt Hoopa Comment
  HSC73935  Eriophyllum lanatum Gail Newton 1980-6-28 680 Humboldt Near Mad River Butte. 1536 Comment
  CAS-BOT-BC301017  Eriophyllum lanatum var. achilleoides Mrs. G. Earle Kelly 1924-6-1 s.n. Humboldt Kneeland Prairie Comment
  HSC58136  Eriophyllum lanatum var. achilleoides Gilbert Muth 1979-8-1 12144 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1677 Comment
  UC1199140  Eriophyllum lanatum var. achilleoides Joseph P. Tracy 1933-7-25 12875 Humboldt Grouse Mountain North Coast Ranges, Grouse Mountain 1524 Comment
  HSC44133  Eriophyllum lanatum var. achilleoides Thomas W. Nelson, Jane P. Nelson 1977-7-1 3579 Humboldt W side of road N from Alder Springs, head of N Fork of Conley Creek 1463 Comment
  HSC67897  Eriophyllum lanatum var. arachnoideum J. P. Smith 1973-5-26 6839 Humboldt Scotia Bluffs along the Eel River near Rio Dell Comment
  SEINET11850721  Eriophyllum lanatum var. grandiflorum J. P. Tracy 1944-1 17480 Humboldt Trinity River Valley, at Willow Creek 152 Comment
  HSC5599  Eriophyllum staechadifolium D. E. Anderson 1961-8-25 1753 Humboldt 1.5 mi. S of Trinidad Comment
  UC1198966  Erodium brachycarpum Joseph P. Tracy 1926-3-14 7387 Humboldt Yager Creek Northern Coast Ranges, Carlotta 60 Comment
  HSC8499  Erodium cicutarium D. E. Anderson 1962-3-17 1935 Humboldt 4 mi. S of Lone Star Ranch Comment
  UC642240  Eryngium aristulatum var. aristulatum Joseph P. Tracy 1938-8-20 16125 Humboldt Alton 30 Comment
  RSA0008580  Erysimum menziesii R. I. Bonn 1965-3-19 10 -a Humboldt 4 miles west of Arcata, on Lanphere Road Comment
  HSC57433  Erysimum perenne G. L. Clifton, Terry Griswold 1979-7-26 10219 Humboldt Near Salmon Mtn., close to the town of Forks of Salmon 1981 Comment
  SEINET13723796 Image available Erythranthe moschata Joseph P. Tracy 1908-1 2697 Humboldt Valley of Van Duzen River; opposite Buck Mountain 762 Comment
  SEINET14045671 Image available Erythranthe nasuta Joseph P. Tracy 1914-1 4457 Humboldt Plants of Northern Coast Ranges of California; Fort Seward. 122 Comment
  CHSC42783  Erythronium californicum R. N. Raynor 1935-4-8 Humboldt Fort Seward. Comment
  HSC97494  Erythronium californicum C. Witte 2007-5-21 46 Humboldt Board Camp Mountain. Forest Service Road 4N38. 1383 Comment
  JEPS61853  Erythronium grandiflorum W. L. Jepson 1902-7-16 2039 Humboldt Trinity Summit 2133 Comment
  HSC99352  Erythronium oregonum K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-6-21 1 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  JEPS79888  Erythronium oregonum Joseph P. Tracy 1918-5-1 4897 Humboldt Northern Coast Ranges, Kneeland Prairie 762 Comment
  HSC44870  Erythronium oregonum subsp. leucandrum J. P. Smith, J. O. Sawyer 1973-5-12 6695 Humboldt 6.1 mi. from Redwood Creek on Hoopa Rd. Comment
  CAS-BOT-BC133332  Erythronium revolutum Harley P. Chandler 1901-6-1 1279 Humboldt Hupa Indian Reservation 1066 Comment
  HSC45483  Eschscholzia californica Maralyn O'Meara 1974-7-11 534 Humboldt Kneeland, Barry Ridge Comment
  UC183669  Eschscholzia californica Joseph P. Tracy 1912-7-26 3853 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  UC184948  Eschscholzia californica Joseph P. Tracy 1912-7-21 3765 Humboldt Alton Northern Coast Region 30 Comment
  RSA21096  Eschscholzia californica var. crocea Carl B. Wolf 1937-6-14 8824 Humboldt North Coast Range, Kneeland Prairie 823 Comment
  UC183764  Euphorbia crenulata Joseph P. Tracy 1913-6-20 4245 Humboldt opposite Buck Mountain (Dinsmore's Ranch, in Valley of Van Duzen River); Northern Coast Range, Valley of Van Duzen River 762 Comment
  UC502958  Euphorbia crenulata Joseph P. Tracy 1929-4-14 8540 Humboldt Phillipsville Northern Coast Ranges (slopes and groves facing South Fork of Eel River) 121 Comment
  CAS-BOT-BC312206  Eurybia radulina Carl B. Wolf 1937-9-8 9301 Humboldt 11 mi. W. of Redwood Highway, Bull Creek - Petrolia Road, North Coast Range 304 Comment
  UC535703  Euthamia occidentalis Eleanor Armstrong 1934-8-16 1150 Humboldt Richardson Grove 121 Comment
  UC581766  Euthamia occidentalis Joseph P. Tracy 1927-10-8 8389 Humboldt Arcata Bottom 15 Comment
  OBI10874  Fallopia sachalinensis T. C. Fuller 1968-7-30 17447 Humboldt NE side of Hwy 101 fwy overpass, Fields landing Comment
  HSC73240  Festuca californica M. A. Baker 1980-5-18 1321 Humboldt Near Black Mtn. 1006 Comment
  UC187111  Festuca elmeri J. P. Tracy 1903-5-23 1899 Humboldt Alder Point, on Eel River Eel River 243 Comment
  CAS-BOT-BC278422  Festuca idahoensis Joseph P. Tracy 1930-6-8 8729 Humboldt Northern Coast Ranges. Kneeland Prairie 762 Comment
  RSA10135  Festuca idahoensis Joseph P. Tracy 1933-7-25 12890 Humboldt Grouse Mountain, North Coast Ranges 1524 Comment
  HSC41382  Festuca occidentalis J. O. Sawyer 1970-6-27 2304 Humboldt Site 318. 1494 Comment
  HSC70661  Festuca occidentalis Gail Newton 1980-7-14 1544 Humboldt Near Deadman Ridge 1097 Comment
  SEINET175520 Image available Festuca occidentalis Victor Duran 1933-5-11 3410 Humboldt Van Duzen River near Bridgeville Comment
  UC38489  Festuca occidentalis Harley P. Chandler Jun 1901 1474 Humboldt Klamath River North Coast Ranges Comment
  UC38531  Festuca occidentalis Harley P. Chandler May 1901 1186 Humboldt Humboldt Bay North Coast Ranges 30 Comment
  UC53596  Festuca occidentalis Joseph Burtt Davy and Walter C. Blasdale 1899-6-9 5369 Humboldt near Harris Comment
  CAS-BOT-BC278959  Festuca rubra Richard W. Pohl 1963-6-2 9452 A Humboldt Sea beach, Trinidad Beach State Park Comment
  HSC65107  Festuca rubra J. P. Smith 1970-6-7 3800 Humboldt 0.6 mi. N of Luffenholtz Beach, along Hwy. 101, near Trinidad. Comment
  UC1103710  Festuca rubra Harold E. Parks and Joseph P. Tracy 1935-6-16 11272 Humboldt lower nw slopes Buck Mountain 792 Comment
  UC187116  Festuca rubra Joseph P. Tracy 1900-7-4 894 Humboldt Humboldt Bay Comment
  CAS-BOT-BC282515  Festuca subbiflora W. R. Dudley 1899-6-1 s.n. Humboldt Bull Creek and Eel River Comment
  CAS-BOT-BC282522  Festuca subbiflora Harley P. Chandler 1901-5-1 1184 Humboldt Humboldt Bay 30 Comment
  SEINET200340 Image available Festuca subulata Joseph P. Tracy 1937-7-25 15541 Humboldt Head of Little Hors-Linto Creek [Horse Linto Creek] 1372 Comment
  UC38427  Festuca subuliflora J. P. Tracy May 1901 1184 Humboldt Humboldt Bay North Coast Ranges 30 Comment
  CHSC23878  Fragaria chiloensis A. R. Morrison 1974-4-27 Humboldt Throughout understory along immediate coastal cliffs ca. 2 mi. n of Trinidad. Comment
  SD39960  Fragaria chiloensis Edith A. Purer 1932-7-27 4159 Humboldt Samoa, sand dunes Comment
  HSC18634  Fragaria vesca Francis Winter 1960-4-23 Humboldt 1.0 mi. N of Dollar Ranch on Korbel-Maple Creek Rd. 229 Comment
  UC1198729  Fragaria vesca Joseph P. Tracy 1901-4-26 1054 Humboldt Humboldt Hill; Northern Coast Region, Humboldt Bay Region 0 Comment
  CAS-BOT-BC59958  Frangula purshiana H. E. Parks; S. T. Parks 1937-6-1 24018 Humboldt Spruce Cove, Trinidad. Comment
  CAS-BOT-BC59964  Frangula purshiana W. R. Dudley 1899-6-19 s.n. Humboldt Scotia. Comment
  HSC18411  Frangula purshiana L. D. Napier 1962-5-19 15 Humboldt 1 mi. E of Arcata on Fickle Hill 168 Comment
  HSC18416  Frangula purshiana P. Markle 1962-5-24 61 Humboldt Edge of 18th St. in Arcata 30 Comment
  HSC31511  Frangula purshiana Steve Selva, Roger Jensen 1974-8-21 29 Humboldt Redwood Forest across from Hwy. 101 entrance to Patrick's Point State Park Comment
  BLMAR403  Frangula purshiana 2005-7-22 403 Humboldt King range, HJ Ridge grazing allotment, ecotone betw dougfir and grassland 548 Comment
  SEINET200389  Frasera speciosa Joseph P. Tracy 1932-7-20 10731 Humboldt Trinity Summit , 1585 Comment
  HSC15538  Fritillaria affinis T. W. Beck 1963-4-13 21 Humboldt Camp Bauer, Korbel, between baseball backstop and Mad River Comment
  CAS-BOT-BC136026  Fritillaria affinis R. C. Barneby 1954-5-19 11571 Humboldt Forested ridge, 13 miles w. of Fort Seward 640 Comment
  UC1005680  Fritillaria affinis Frank W. Gould 1939-5-30 830 Humboldt Horse Mountain, about half-way up mountain road Horse Mountain 1000 Comment
  UC1197638  Fritillaria atropurpurea Joseph P. Tracy 1935-7-30 14375 Humboldt Salmon Summit, just below the top Salmon Summit 2072 Comment
  CAS-BOT-BC130448  Fritillaria purdyi Doris K. Kildale 1928-3-28 4364 Humboldt Kneeland Prairie 853 Comment
  UC2029548  Fumaria capreolata Richard R. Halse 2013-3-28 8767 Humboldt Eureka, weed area by a Texaco station near 3543 Broadway St. (U.S. Highway 101) and its intersection with McCullens Ave. Comment
  HSC39421  Galium ambiguum subsp. siskiyouense Thomas W. Nelson 1976-6-14 2707 Humboldt S of Lassic Peak 1524 Comment
  HSC41592  Galium ambiguum subsp. siskiyouense Thomas W. Nelson, Jane P. Nelson 1977-7-1 3558 Humboldt Along ridge between Bear Creek and Blanket Creek 1494 Comment
  HSC19847  Galium aparine Elrid H. Spinas 1948-6-16 50 Humboldt Horse Mtn. Comment
  HSC77962  Galium aparine L. P. Janeway, Paul Wilson 1984-5-7 761 Humboldt N Spit of Humboldt Bay, on BLM lands near the Coast Guard Station 3 Comment
  HSC26464  Galium aparine T. O. Osborne 1970-5-17 17 Humboldt Sugarloaf Rock, Cape Mendocino 76 Comment
  UC1196097  Galium bifolium Joseph P. Tracy 1930-7-16 8906 Humboldt near McKay Camp; South Fork Mountain 1676 Comment
  UC175780  Galium bifolium Joseph P. Tracy 1912-7-31 3923 Humboldt near summit Northern Coast Ranges, Buck Mountain 1676 Comment
  JEPS25687  Galium bolanderi P. C. Hutchison 1961-5-22 2010 Humboldt 1.1 mi s Berry Summit (at 2871 ft alt. on hiway US 299) (on road to Horse Mountain, in slide) 914 Comment
  UC1196089  Galium bolanderi Joseph P. Tracy 1933-7-9 12642 Humboldt Willow Creek Trinity River Valley 152 Comment
  RSA698804  Galium californicum J. R. Bruff 1937-8-17 916 Humboldt Richardson Grove. Comment
  JEPS52857  Galium californicum subsp. californicum Lauramay T. Dempster and G. L. Stebbins 1963-7-8 3861 Humboldt 2.3 mi s Weott; Avenue of the Giants Comment
  UC1196106  Galium californicum subsp. californicum Joseph P. Tracy 1942-5-16 17329 Humboldt along river half way between Miranda and Garberville; S. Fork Eel River 121 Comment
  UC1225915  Galium muricatum Joseph P. Tracy 1942-7-1 17359 Humboldt opposite Buck Mountain (along river); Van Duzen River, Dinsmore's 762 Comment
  UC1196102  Galium parisiense Joseph P. Tracy 1916-6-19 4719 Humboldt at Forks of Dobby Creek Northern Coast Ranges 182 Comment
  UC602542  Galium trifidum Joseph P. Tracy 1927-7-17 8273 Humboldt lower w foothills of Chaparral Mountain; North Coast Ranges, Three Cabins 457 Comment
  HSC58153  Galium triflorum G. L. Clifton, Griswold 1979-8-2 12205 Humboldt Near Oregon Creek, close to the town of Hoopa 1663 Comment
  HSC41594  Galium triflorum Thomas W. Nelson, Jane P. Nelson 1977-7-1 3554 Humboldt 1494 Comment
  CAS-BOT-BC303389  Gamochaeta ustulata Joseph P. Tracy 1936-5-29 14830 Humboldt Near Orick, on Bald Hills Rd, 2 miles NE of Orick 152 Comment
  RSA638992  Gamochaeta ustulata R. F. Thorne 1974-7-29 45067 Humboldt Samoa Dunes: between Humboldt Bay and Pacific Ocean. Comment
  UC127829  Gamochaeta ustulata Joseph Burtt Davy and Walter C. Blasdale 1899-5 5465 Humboldt near Elk Prairie; North Western California Comment
  HSC37838  Garrya buxifolia Thomas W. Nelson, Jane P. Nelson 1976-2-21 2246 Humboldt Beside the Hoopa-Redwood Valley Rd. ca. 5 mi. W of Hoopa Comment
  CAS-BOT-BC188544  Garrya elliptica L. R. Abrams 1916-7-18 6137 Humboldt Trinidad Comment
  RSA392970  Garrya elliptica Maude Minthorn s.n. Humboldt Ferndale. Comment
  SEINET3890980  Garrya elliptica C. Davidson 2011-1-26 11826 Humboldt Moonstone Beach, north of McKinleyville.; 0 Comment
  CAS-BOT-BC182173  Garrya fremontii Joseph P. Tracy 1939-9-10 16499 Humboldt Trinity River Valley at Willow Creek 152 Comment
  UC1122677  Garrya fremontii A. E. Wieslander 1931-5-17 196 Humboldt Bald Hills; Hoopa Quad. Comment
  UCSB72516  Garrya fremontii Moseley, Maynard 1952-8-21 Humboldt Along western valley wall of Willow Creek, mostly within Hoppe Indian Reservation, upstream from Willow Village Comment
  POM198468  Gastridium phleoides Le Roy Abrams 1916-7-11 6025 Humboldt Mouth of Grizzly Creek on Van Duzen River. Comment
  POM207448  Gastridium phleoides Joseph P. Tracy 1900-9-9 951 Humboldt Bar of Yager Creek, near Hydesville. 61 Comment
  UC38566  Gastridium ventricosum Harley P. Chandler 1901-6-1 1506 Humboldt Klamath River; North Coast Ranges, Klamath River 426 Comment
  SEINET12518332 Image available Gastridium ventricosum Harley P. Chandler 1901-1 1506 Humboldt Klamath River, North Coast Ranges 427 Comment
  HSC74354  Gaultheria ovatifolia Gail Newton 1980-6-17 216 Humboldt Near Onion Mtn. 1341 Comment
  CAS-BOT-BC58915  Gaultheria shallon Doris K. Kildale 1927-9-9 3958 a Humboldt Big Lagoon Comment
  CHSC68497  Gaultheria shallon Vernon H. Oswald 1997-4-10 8328 Humboldt Elk Head, north end of Trinidad State Beach. 30 Comment
  HSC12945  Gaultheria shallon Steve Dorei 1970-10-9 30 Humboldt Arcata, near NE entrance to Wildlife building on Humboldt State University campus Comment
  HSC7805  Gaultheria shallon Dan O'Brien 1962-5-9 Humboldt 4 1/2 mi. E on Fickle Hill Rd. Comment
  HSC7812  Gaultheria shallon J. Pursell 1964-11-1 1111 Humboldt Hoopa Valley Hwy. 96 Comment
  HSC93253  Gaultheria shallon Gordon Leppig 1998-3-25 726 Humboldt Big Lagoon County Park, bank just E of bog 8 Comment
  SEINET11996979  Gaultheria shallon F. H. Utech, Sato, T.; Ohara, M. 1990-1 90 293 a Humboldt 2.4 mi W of US 101 on CA 169 from Klamath to Klamath Glen along Klamath River 50 Comment
  UCSB19651  Gaultheria shallon Lowery, Jos. 1962-08 Humboldt Willow Springs, Mts. ca. 30 mi. E of Eureka 457 Comment
  HSC54658  Gayophytum diffusum subsp. parviflorum Overton, Butler 1979-7-25 9877 Humboldt Near Sims Mtn., close to the town of Willow Creek 1295 Comment
  UC1196966  Gayophytum diffusum subsp. parviflorum Joseph P. Tracy 1933-7-26 12914 Humboldt Grouse Mountain North Coast Ranges 1524 Comment
  POM223144  Gayophytum diffusum subsp. parviflorum Joseph P. Tracy 1932-7-11 10400 Humboldt Klamath Mountains, Trinity Summit, open ground at Corral Prairie. 1524 Comment
  RSA46841  Gayophytum diffusum subsp. parviflorum Doris K. Kildale 1927-7-22 3808 Humboldt Lasseck s Peaks Comment
  CAS-BOT-BC208037  Genista monspessulana Elmer I. Applegate 1931-3-28 6627 Humboldt Redwood Highway, near Dyrville Comment
  JEPS47046  Gentiana affinis var. ovata Joseph P. Tracy 1933-10-1 13078 Humboldt Big Lagoon 91 Comment
  HSC12414  Gentiana sceptrum D. Santana 1970-10-14 35 Humboldt Big Lagoon Bog Comment
  UC275299  Gentiana sceptrum R. M. Holman 1925-7-23 Humboldt Big Lagoon Comment
  UC534995  Gentiana sceptrum H. E. Parks 1931-7-1 10152 Humboldt Bishop Pine Lodge Trinidad 76 Comment
  UC1198644  Gentiana sceptrum Joseph P. Tracy 1926-10-24 7817 Humboldt near High Prairie; Northern Coast Ranges, Bald Mountain 1066 Comment
  UC1198641  Gentianopsis simplex Doris Kildale Aug. 1925 Humboldt Trinity Summit Comment
  CHSC31298  Geranium dissectum Mark Stopher 1980-7-18 120 Humboldt In diked off upland habitat along Elk River near Hwy 101 bridge. 1 Comment
  UC1197407  Geranium dissectum Joseph P. Tracy 1936-6-9 14880 Humboldt Bear River Ridge Northern Coast Ranges 609 Comment
  HSC89987  Geranium molle Leonel Arguello 1989-6-24 24 Humboldt Lanphere-Christensen Dunes Preserve 3 mi. W of Arcata, Hunt parcel Comment
  SEINET200731  Gilia capillaris Joseph P. Tracy 1933-7-25 12866 Humboldt Grouse Mtn. 1524 Comment
  HSC23678  Gilia capitata Tim Baroni 1971-7-5 88 Humboldt 8 mi. E of Petrolia Comment
  HSC24383  Gilia capitata J. O. Sawyer 1970-6-24 2212 Humboldt Ridge on Big Hill Rd., E of Hoopa 1189 Comment
  CAS-BOT-BC226144  Gilia capitata subsp. pacifica Mrs. G. Earle Kelly 1924-6-1 s.n. Humboldt Castle Island near Crescent City Comment
  HSC104424  Gilia capitata subsp. pacifica Greg O'Connell 2013-6-27 Humboldt Summit of Mt. Andy 1159 Comment
  HSC59484  Gilia millefoliata M. A. Ericksen 1979-4-29 241 Humboldt 0.4 mi. N of Coast Guard Station, Samoa Peninsula. Comment
  CAS-BOT-BC266491  Githopsis diffusa L. R. Abrams 1918-6-16 7176 Humboldt Willow Creek Comment
  UC562469  Glaux maritima Joseph P. Tracy 1926-8-29 7780 Humboldt around Humboldt Bay (Northern Coast Region, Mad River Slough); Northern Coast Region, Mad River Slough 3 Comment
  CAS-BOT-BC218474  Glehnia littoralis subsp. leiocarpa Carl B. Wolf 1937-6-18 8906 Humboldt Centerville Beach 3 Comment
  HSC39440  Glehnia littoralis subsp. leiocarpa Linda M. Barker 1976-6-22 1626 Humboldt 3 mi. W of Arcata Comment
  UCR196165  Glyceria declinata R. F. Thorne, Percy C. Everett 1965-8-9 35331 Humboldt Northwestern; Outer North Coastal region, Clam Beach County Park, along highway 3 Comment
  SEINET200358 Image available Glyceria occidentalis J. P. Tracy 1930-8-3 9147 Humboldt Buck Mtn near Little Van Duzen; lower foothills of its NW slope 762 Comment
  CAS-BOT-BC282840  Glyceria striata H. P. Chandler 1901-6-1 1526 Humboldt Klamath River 426 Comment
  SEINET10591165  Glyceria striata Harley P. Chandler Chandler 1526 Humboldt Klamath River. 427 Comment
  HSC56965  Gnaphalium palustre Overton, Butler 1979-7-23 9488 Humboldt Near Titlow Hill, close to the town of Willow Creek. 1280 Comment
  HSC38741  Goodyera oblongifolia J. D. Ackerman 1975-5-3 441 Humboldt Hwy. 299, 200 yds. E of Lord Ellis Summit, W of Blue Lake and Redwood Creek Comment
  UC582587  Gratiola ebracteata Joseph P. Tracy 1935-5-25 13840 Humboldt Fort Seward 106 Comment
  CAS-BOT-BC304744  Grindelia hirsutula Marcus E. Jones 1931-7-16 29143 Humboldt Arcata Comment
  HSC95525  Grindelia hirsutula Andrea Pickart 2002-7-19 184 Humboldt Arcata Marsh at Jolly Giant Creek mile .1 10 Comment
  JEPS41893  Grindelia hirsutula W. L. Jepson 1936-8-18 17944 Humboldt Capetown Capetown (grassy flats by the sea) Comment
  RSA18609  Grindelia hirsutula Lyman Benson 1937-9-9 9305 Humboldt Coast, 2 miles S of Cape Mendocino. 6 Comment
  CHSC69498  Grindelia stricta var. platyphylla Vernon Oswald; Lowell Ahart 1997-9-4 8845 Humboldt North Coast Region. Big Lagoon County Park at the southwest edge of Big Lagoon. 3 Comment
  POM359112  Grindelia stricta var. platyphylla M. B. Dunkle 1936-8-18 4813 Humboldt South of Eureka. 91 Comment
  HSC103971  Grindelia stricta var. stricta C. Reynolds 2015-4-12 31 Humboldt Along Freshwater Beach, north of the Kuchel Visitor Center 1 Comment
  HSC56345  Hackelia bella Griswold, Butler 1979-7-10 6282 Humboldt Near Board Camp Mtn., close to the town of Willow Creek 1372 Comment
  HSC74384  Hackelia bella M. A. Baker 1980-6-28 2473 Humboldt Near Mad River Buttes 1445 Comment
  HSC97938  Hackelia californica Cara Witte 2007-5-31 143 Humboldt Off National Forest 1. Near Board Camp Mountain. Approximately 4 miles south of Brays Opening and 1/2 mile west of road. 1510 Comment
  HSC56934  Hackelia micrantha G. L. Clifton, Butler 1979-7-26 9370 Humboldt Near Salmon Mtn., close to the town of Forks of Salmon 1935 Comment
  UC1713302  Hackelia setosa Joseph P. Tracy 1937-7-25 15547 Humboldt Ridge 2 mi e of Grove's Prairie; Trinity Summit 1524 Comment
  CAS-BOT-BC306614  Helenium bigelovii Carl B. Wolf 1937-8-13 9248 Humboldt North Coast Range, 11 mi. E. of Hoopa Valley on new road towards Trinity Summit 1524 Comment
  UC1199145  Helenium bigelovii Joseph P. Tracy 1932-7-14 10541 Humboldt Corral Prairie Trinity Summit, Corral Prairie 1584 Comment
  UC1223099  Helenium bigelovii Joseph P. Tracy 1949-8-11 18462 Humboldt Snow Camp 1402 Comment
  SEINET11848908  Helenium bigelovii J. P. Tracy 1949-1 18462 Humboldt Snow Camp 1402 Comment
  CAS-BOT-BC306868  Helenium bolanderi Carl B. Wolf 1937-8-10 9089 Humboldt Big Lagoon, bog at state park 6 Comment
  JEPS35541  Helenium puberulum W. L. Jepson 1936-8-13 17892 Humboldt Philipsville S. Fk. Eel River Comment
  UC1239638  Heliotropium curassavicum Joseph P. Tracy 1938-8-28 16135 Humboldt Stone Lagoon Beach Comment
  HSC48030  Hemizonella minima Brad Klipfel 1974-5-27 405 Humboldt Horse Mtn. Comment
  HSC75949  Hemizonella minima Overton, Butler 1979-7-24 9709 Humboldt Near Black Rock, close to the town of Willow Creek. 1554 Comment
  UC249845  Hemizonella minima Joseph P. Tracy 1923-6-24 6349 Humboldt High Prairie Northern Coast Ranges, Bald Mountain 1066 Comment
  CAS-BOT-BC306114  Hemizonia congesta subsp. clevelandii L. R. Abrams 1916-7-11 5975 Humboldt Dobbin [Dobbyn] Creek Comment
  UC1223087  Hemizonia congesta subsp. tracyi Joseph P. Tracy 1950-6-25 18902 Humboldt 3 mi s Burr Valley 1158 Comment
  UC673047  Heracleum lanatum Joseph P. Tracy 1940-9-26 16730 Humboldt s. end Humboldt Bay (Salmon Creek Valley); , Salmon Creek Valley 9 Comment
  HSC56157  Heracleum maximum G. L. Clifton, Terry Griswold 1979-8-1 12022 Humboldt Near N Trinity Mtn., close to the town of Hoopa. 1798 Comment
  CAS-BOT-BC143654  Heteromeles arbutifolia Doris K. Kildale 1927-12-1 4214 Humboldt Klamath River at Orleans Comment
  CDA39222  Heterotheca oregona D. Juliano 2013-8-1 PDR# 120 P06003641 Humboldt Vicinity of Carlotta, along Yager Creek, near Hwy. 36 & Central Ave. Comment
  CAS-BOT-BC311079  Heterotheca oregona var. rudis Frank W. Peirson 1926-7-13 7051 Humboldt Mad River, vicinity of Blue Lake Comment
  HSC74559  Heuchera micrantha M. A. Baker 1980-7-11 2798 Humboldt Near Red Mtn. 1341 Comment
  HSC8624  Heuchera micrantha Jack Rockwell 1962-4-29 34 Humboldt S Bank of Van Duzen River, E of Hwy. 101 9 Comment
  SEINET9736844  Heuchera micrantha Unknown 1923-6-27 6379 Humboldt Trinity River Valley, near the South Fork 183 Comment
  RSA0066094  Heuchera micrantha var. diversifolia Thomas W. Nelson, Jane Nelson 1976-7-1 2904 Humboldt Along serpentine ridge N of Bear Creek. 1463 Comment
  HSC57002  Hieracium albiflorum Overton, Butler 1979-7-24 9588 Humboldt Near Titlow Hill, close to the town of Willow Creek. 1250 Comment
  HSC57870  Hieracium albiflorum G. L. Clifton 1979-7-31 11399 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  HSC5825  Hieracium albiflorum David Adams 1960-7-10 Humboldt W of Mad River Slough 0 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
  RSA12437  Hieracium albiflorum C. B. Wolf 1934-7-2 5856 Humboldt 2 miles from Bald Mt. on road to Korbel. 762 Comment
  UC582423  Hieracium nudicaule Joseph P. Tracy 1933-8-6 12952 Humboldt French Camp Ridge 1066 Comment
  HSC74410  Hieracium scouleri Gail Newton 1980-8-10 2024 Humboldt Near Blake Mtn. 1798 Comment
  SEINET200705  Hierochloe occidentalis Joseph P. Tracy 1931-4-26 9342 Humboldt Willow Creek Canyon 610 Comment
  UC1224689  Hierochloe occidentalis D. E. Anderson 1964-3-22 2925 Humboldt on roadcut on n side of creek Jacoby Creek Comment
  HSC13459  Hippuris vulgaris Paul Shields 1955-9-23 Humboldt 5 mi. SE of Arcata Comment
  HSC10121  Holcus lanatus H. E. Parks, S. T. Parks Aug 1943 24260 Humboldt Spruce Cove, Trinidad. 61 Comment
  SEINET4585084  Holcus lanatus H. Parks, S. Parks 1943-1 24260 Humboldt North Coast Ranges, Spruce Cove, Trinidad. 61 Comment
  UC180229  Holcus lanatus Joseph P. Tracy 1913-6-22 4271 Humboldt opposite Buck Mountain (in valley of Van Duzen River, Dinsmore's Ranch); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  HSC90677  Holcus mollis Gail Newton 1982-6-1 3568 Humboldt Elk River Wildlife Area, Eureka. Comment
  CAS-BOT-BC149903  Holodiscus discolor L. R. Abrams 1918-6-16 7147 Humboldt Willow Creek Comment
  HSC23709  Holodiscus discolor Tim Baroni 1971-6-25 43 Humboldt Comment
  HSC57021  Holodiscus discolor Overton, Butler 1979-7-24 9636 Humboldt Near Friday Camp, close to the town of Willow Creek. 1250 Comment
  HSC71582  Holodiscus discolor Gail Newton 1980-6-16 189 Humboldt Near Onion Mtn. 1280 Comment
  POM368001  Holodiscus discolor Patricia Wilder 1968-8-22 4420 Humboldt Coastal rain forest 7 miles S of Ferndale on Mattole Road, N of Cape Mendocino and Capetown, Mt. Range: Bear River Ridge; Drainage Area: Oil Creek to Pacific. 549 Comment
  RSA449758  Holodiscus discolor Carl B. Wolf 1937-8-13 9227 Humboldt North coast range, 8 mi. east of Hoopa Valley on new road towards Trinity summit. 1220 Comment
  UC1198702  Holodiscus discolor J. P. Tracy 1901-6-16 1150 Humboldt immediate vicinity of Eureka 0 Comment
  UC1198706  Holodiscus discolor Joseph P. Tracy 1932-7-18 10718 Humboldt Klamath Mountains, Trinity Summit, Head of Brett Hole Head of Brett Hole; Klamath Mountains, Trinity Summit, Head of Brett Hole 1828 Comment
  UCSC000355  Holodiscus discolor H. L. Person 1932-6-25 s.n. Humboldt E. of Korbel Korbel - Eureka Comment
  HSC37518  Hordeum depressum J. D. Ackerman, A. M. Montalvo 1975-8-9 630 Humboldt Arcata, Hwy. 101 and Giuntoli Ln. Comment
  HSC23405  Hordeum marinum subsp. gussoneanum Jeff Blake 1971-11-15 Humboldt Bear Ridge area, near Petrolia. Comment
  HSC26776  Hordeum marinum subsp. gussoneanum Thomas W. Nelson 1971-5-31 466 Humboldt 915 Comment
  UC187307  Hordeum murinum subsp. leporinum Joseph P. Tracy 1911-6-25 3243 Humboldt Eureka Northern Coast Region, Eureka 0 Comment
  UC1198711  Horkelia californica Joseph P. Tracy 1930-6-15 8755 Humboldt n Dobbyn Creek; Northern Coast Ranges 152 Comment
  JEPS44517  Horkelia sericata Harley P. Chandler 1901-6-1 1543 Humboldt between Sommes Bar Jims Ranch; North Coast Ranges, Klamath River 426 Comment
  SEINET958139  Hosackia pinnata J. P. Tracy 1937-1 15375 Humboldt Trinity River Valley, at Willow Creek. 152 Comment
  HSC100885  Hosackia subpinnata Carl C. Marshall 9 Humboldt No data. Comment
  UCD128229  Hydrocotyle ranunculoides Linda M. Barker 1976-8-2 1704 Humboldt Coastal forest and dunes 3 miles west of Arcata. Comment
  UC1239759  Hydrophyllum fendleri var. albifrons Joseph P. Tracy 1932-7-11 10422 Humboldt Corral Prairie; Trinity Summit 1584 Comment
  HSC64181  Hydrophyllum tenuipes J. O. Sawyer, M. A. Ericksen 1979-6-23 3394 Humboldt Slopes below Mill Creek Lakes 1585 Comment
  JEPS1637  Hydrophyllum tenuipes Joseph P. Tracy 1918-6-16 4954 Humboldt Eureka; Northern Coast Ranges 0 Comment
  UC204110  Hydrophyllum tenuipes Joseph P. Tracy 1918-6-16 4954 Humboldt Eureka; Northern Coast Region 0 Comment
  SEINET12347577  Hydrophyllum tenuipes F. H. Utech 1988-5-23 88 -267 Humboldt 14 mi W of Bridgeville enroute to Carlotta on CA 36 50 Comment
  HSC53870  Hypericum anagalloides Griswold, Butler 1979-7-10 6350 Humboldt Near Board Camp Mtn., close to the town of Willow Creek 1372 Comment
  HSC58119  Hypericum anagalloides G. L. Clifton, Griswold 1979-8-1 12088 Humboldt Near N Trinity Mtn., close to the town of Hoopa 1799 Comment
  HSC98128  Hypericum anagalloides Cara Witte 2007-6-28 380 Humboldt FS Road 5N10. Approximately 0.5 mi E of intersection with National Forest 1. 1426 Comment
  RSA12422  Hypericum androsaemum C. B. Wolf 1934-7-2 5874 Humboldt Small lake at Snow Camp (Mountains east of Korbel). 1372 Comment
  HSC41265  Hypericum perforatum Brad Klipfel 1974-7-23 458 Humboldt Horse Mtn. along disturbed ridge rd. E of the towers Comment
  HSC78973  Hypochaeris glabra L. P. Janeway, Paul Wilson 1984-5-7 760 Humboldt N Spit of Humboldt Bay, on BLM lands near the Coast Guard Station 3 Comment
  HSC15970  Iliamna latibracteata H. E. Parks, S. T. Parks Jun 1935 5593 Humboldt E side of Prairie Creek, N of Orick Comment
  UC902184 Image available Iliamna latibracteata Joseph P. Tracy 1948-8-15 18151 Humboldt near Elk Camp, on Ridge 2 miles east of Grove's Prairie; Trinity Summit. 1493 Comment
Read comments
Feb 27 2012
  HSC55838  Ipomopsis aggregata G. L. Clifton, Griswold 1979-7-25 10775 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1814 Comment
  UC909150  Ipomopsis aggregata Joseph P. Tracy 1932-7-12 10440 Humboldt Corral Prairie Trinity Summit 1584 Comment
  HSC63146  Ipomopsis aggregata subsp. aggregata M. A. Baker 1979-6-28 939 Humboldt Jct. of Tish Tang A Tang Creek and trail N of Grogan Hole Comment
  HSC99250  Iris chrysophylla T. Jimerson, J. Pageau 1979-6-13 551 Humboldt Near Slate Creek Butte, close to the town of Orleans 549 Comment
  UC1196394  Iris douglasiana Joseph P. Tracy 1934-8-31 13644 Humboldt Kneeland Prairie 762 Comment
  UC275571  Iris douglasiana Joseph P. Tracy 1924-9-21 6894 Humboldt Eureka; Northern Coast Ranges 0 Comment
  SEINET12049821  Iris douglasiana F. H. Utech 1986-1 86 -395 Humboldt ca 5 mi N on Kings Peak Rd, from junction with Shelter Cove Rd, near Tolkan Recreation Area 480 Comment
  UC1196391  Iris macrosiphon Joseph P. Tracy 1930-5-25 8709 Humboldt Larrabee Valley 731 Comment
  UC667117  Iris macrosiphon Joseph P. Tracy 1927-6-12 8138 Humboldt Horse Mountain; Northern Coast Ranges 1524 Comment
  BLMAR542  Iris purdyi Jennifer Wheeler 2009-6-23 542 Humboldt King range, On Paradise Ridge road Comment
  UC275564  Iris purdyi Joseph P. Tracy 1924-7-4 6715 Humboldt Snow Camp; Northern Coast Ranges 1371 Comment
  HSC45311  Iris tenax subsp. klamathensis R. York 1978-5-11 165 Humboldt Along logging road above Orleans 640 Comment
  HSC66486  Iris tenax subsp. klamathensis T. Jimerson, J. Pageau 1979-4-27 438 Humboldt Ishi Pishi Rd., 1.7 mi. S of intersection with FS Rd. 11N11, Orleans 213 Comment
  RSA120324  Iris tenax subsp. klamathensis S. Tillett 1956-7-6 618 Humboldt 11 miles from Orleans, on Bar Shanty Road 1159 Comment
  HSC44786  Iris tenuissima Maralyn O'Meara 1972-6-8 96 Humboldt Along Bald Hills Rd., 8 mi. E of junction with Hwy. 101 Comment
  CAS-BOT-BC88654  Isatis tinctoria J. H. Thomas 1949-6-12 900 Humboldt Near Klamath River, about 0.5 mile north of town of Orleans. Comment
  UC1152073  Isolepis carinata Joseph P. Tracy 1948-5-31 17982 Humboldt 1/2 mi ne Garberville (on the road to Harris); ne of Garberville Comment
  CAS-BOT-BC112459  Isolepis cernua Carl B. Wolf 1927-8-22 790 Humboldt Big Lagoon Comment
  HSC38446  Jaumea carnosa J. P. Smith 1976-7-3 8935 Humboldt Manila, Samoa Peninsula Comment
  UC479412  Jaumea carnosa Marcus E. Jones, A. M. 1931-7-16 29118 Humboldt Arcata Comment
  HSC103408  Juncus bolanderi Ivy Watson 2008-10-5 34 Humboldt Blue Lake; ~ 500 ft. upstream of the Hatchery Rd. bridge, north bank. 22 Comment
  HSC45436  Juncus bolanderi Thomas W. Nelson, Jane P. Nelson 1978-7-2 4402 Humboldt Wet alluvial soil at Lost Lake 1433 Comment
  CHSC2217  Juncus breweri M. Anthony 1960-5-14 Humboldt Near Arcata. Comment
  CHSC43010  Juncus breweri L. P. Janeway 1987-7-31 2538 Humboldt Vicinity of Eureka; North Spit of Humboldt Bay near the SE corner of Eureka City Airport. 3 Comment
  HSC39051  Juncus bufonius Linda M. Barker 1976-6-22 1619 Humboldt 3 mi. W of Arcata Comment
  HSC14012  Juncus effusus subsp. pacificus W. R. Brigham 1962-5-19 24 Humboldt S of Big Lagoon. Comment
  SDSU11740  Juncus effusus var. brunneus D. F. Howe 1961-8-2 3119 Humboldt 8.5 miles east of Orick on Bald Mt. road. 610 Comment
  HSC98512  Juncus ensifolius Cara Witte 2008-7-25 936 Humboldt At intersection with Forest Service Road 5N10C and Forest Service Road 5N10. 1346 Comment
  RSA246805  Juncus ensifolius Robert F. Thorne, Percy C. Everett 1965-8-9 35335 Humboldt Clam Beach County Park. 3 Comment
  UC1152094  Juncus ensifolius Joseph P. Tracy 1950-7-16 8980 Humboldt near McKay Camp (close to Trinity County line); South Fork Mountain 1676 Comment
  UC1152091  Juncus falcatus subsp. sitchensis Joseph P. Tracy 1938-7-6 16019 Humboldt sw corner Big Lagoon Comment
  RSA168868  Juncus falcatus var. falcatus Joseph P. Tracy 1938-7-6 16019 Humboldt Big Lagoon Comment
  HSC40774  Juncus laccatus Thomas W. Nelson 1976-7-9 3013 Humboldt S of Mt. Lassic (Signal Peak) 1707 Comment
  HSC23804  Juncus lescurii Tim Baroni 1971-6-26 69 Humboldt Out the Samoa Peninsula just opposite the Georgia Pacific pulp mill Comment
  UCD150382  Juncus lescurii William Anderson and H. Mc. 1964-8-6 s.n. Humboldt Freshwater Lagoon. Comment
  RSA298328  Juncus patens J. P. Smith, Advanced Plant Taxonomy Class 1971-10-9 5034 Humboldt Mad River above the Fish Hatchery. Comment
  RSA53820  Juncus patens Henry M. Pollard 1945-8-27 s.n. Humboldt Pond near Harley Place, near Orleans. Comment
  JEPS67133  Juncus xiphioides Joseph P. Tracy 1915-9-12 4671 Humboldt Mouth of Laribee Creek Northern Coast Ranges 60 Comment
  JEPS57409  Keckiella corymbosa L. R. Heckard with T. I. Chuang 1968-7-5 Humboldt e of Garberville (along Mail Ridge Road, 4 1/2 mi n of its junction w Harris Road); Mail Ridge Road Comment
  RSA79855  Keckiella corymbosa F. W. Peirson 1926-7-12 7025 Humboldt Klamath River near Weitchpec. Comment
  UC1222788  Keckiella corymbosa Joseph P. Tracy 1950-8-20 19314 Humboldt 1 mi s mouth of Salmon River (along e side of Salmon River); Klamath River Comment
  UC577410  Keckiella lemmonii Joseph P. Tracy 1934-8-14 13582 Humboldt near mouth Bull Creek; South Fork of Eel River 60 Comment
  HSC34289  Kelloggia galioides K. Irwin 1975-8-16 Humboldt Grogans Hole area. Comment
  HSC76232  Kelloggia galioides Teresa Prendusi 1981-7-21 265 Humboldt Near Whiteys Peak 1646 Comment
  JEPS3419  Kickxia elatine Mrs. Emanuel Fritz 1934-8-4 Humboldt Phillipsville South Fork Eel River (Greenwald orchard, w Humboldt County) Comment
  UC902208  Kickxia elatine Joseph P. Tracy 1946-8-25 17648 Humboldt near mouth of Van Duzen River; Eel River 15 Comment
  RSA244957  Kickxia elatine David Johnson 1973-11-15 s.n. Humboldt Growing along West End Rd. ca 50 yds. north of the highway 101 overpass. Beside the railroad tracks. Comment
  UC1132146  Koeleria macrantha H. S. Yates 1936-6-17 5699 Humboldt lower nw slope Buck Mountain; South Fork Peak Quad., lower nw slope Buck Mountain Comment
  CAS-BOT-BC340409  Lactuca biennis Henry M. Pollard 1947-8-21 s.n. Humboldt Near Ferrian Ranch, Orleans region Comment
  UC1239673  Lamium amplexicaule Joseph P. Tracy 1939-7-8 16314 Humboldt Eureka 30 Comment
  UC1225837  Lamium purpureum Joseph P. Tracy 1945-5-10 17508 Humboldt Eureka Comment
  HSC78960  Lamium purpureum L. P. Janeway, K. Berg 1984-4-11 725 Humboldt N Spit of Humboldt Bay, turnout along Samoa Rd., across from boat ramp just N of Coast Guard Station 3 Comment
  UC1222971  Lasthenia californica subsp. californica Joseph P. Tracy 1947-6-28 17752 Humboldt Larrabee Valley 731 Comment
  UC594160  Lasthenia glaberrima S. K. Harris, J. P. Tracy, and H. S. Yates 1936-6-17 3439 Humboldt nw slopes Buck Mountain 822 Comment
  JEPS55264  Lathyrus jepsonii var. californicus W. L. Jepson 1902-7-10 2010 Humboldt Martin's Ranch South Fork Trinity River Comment
  UC494166  Lathyrus littoralis H. E. Parks 1930-5-24 798 Humboldt Little River Lagoon Comment
  RSA245212  Lathyrus littoralis J. E. Walters 1966-4-13 35 Humboldt 1/4 miles N. of Samoa Pulp Mill. 5 Comment
  HSC82184  Lathyrus nevadensis var. nevadensis Thomas W. Nelson 1977-6-15 3440 Humboldt Along old road to ski area 1372 Comment
  CAS-BOT-BC205039  Lathyrus palustris Charlotte M. Hoak 1931-7-15 s.n. Humboldt Big Lagoon Comment
  UC1222408  Lathyrus polyphyllus Joseph P. Tracy 1949-8-11 18474 Humboldt 2-6 mi s Grouse Mt. (ridge e of headwaters of Redwood Creek, where power line crosses); Kinsey Ridge 1280 Comment
  RSA64962  Lathyrus torreyi C. L. Hitchcock 1949-6-7 19084 Humboldt Ca 15 miles E of Blue Lake, along Highway #299. Comment
  UC175635  Lathyrus vestitus Joseph P. Tracy 1913-6-26 4352 Humboldt opposite Buck Mountain (Dinsmore's Ranch); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  UC169300  Lathyrus vestitus var. vestitus Joseph P. Tracy and Ernest B. Babcock 1912-5-11 3610 Humboldt near Hydesville; Northern Coast Region 30 Comment
  CAS-BOT-BC325930  Layia carnosa Joseph P. Tracy 1917-5-30 4796 Humboldt Sand dunes at mouth of Little River. 6 Comment
  UC30591  Layia carnosa J. P. Tracy 1901-4-17 Humboldt Samoa; Humboldt Bay Comment
  HSC36107  Lemna minor Neil D. Ledet 1973-11-29 7 Humboldt 16 mi. S of Ferndale, N side of Cape Town along county Rd., floating on ranch pond Comment
  JEPS36508  Leontodon saxatilis subsp. saxatilis F. W. Peirson 1926-7-13 7056 Humboldt near Blue Lake; Mad River Comment
  RSA518828  Lepidium Joseph P. Tracy 1933-8-22 12992 Humboldt Mouth of Eel River. 3 Comment
  UC1225757  Lepidium latipes Joseph P. Tracy 1948-5-31 18010 Humboldt Alder Point 304 Comment
  UCD115824  Lepidium nitidum Joseph P. Tracy 1948-5-31 17990 Humboldt Harris. 762 Comment
  UC1116219  Lepidium strictum Joseph P. Tracy 1948-5-31 17992 Humboldt Harris 762 Comment
  UC1173729  Lepidium virginicum Joseph P. Tracy 1939-4-29 16245 Humboldt mouth of Slate Creek Klamath River 121 Comment
  HSC35595  Leptosiphon nuttallii Thomas W. Nelson, Jane P. Nelson, James Nelson 1975-7-15 2006 Humboldt French Camp, Bald Hills. Comment
  UC176859  Lessingia nemaclada Joseph P. Tracy 1911-7-8 3445 Humboldt near mouth Willow Creek; Northern Coast Ranges, Valley of Trinity River 152 Comment
  HSC55095  Lewisia leeana G. L. Clifton, Griswold 1979-7-31 11799 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa. 1845 Comment
  HSC102127  Lewisia nevadensis M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 1031 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  UC184878  Leymus X vancouverensis Joseph P. Tracy 1912-7-7 3744 Humboldt Eureka Northern Coast Region (bay shore) 0 Comment
  SEINET200642 Image available Leymus triticoides J. P. Tracy 1929-6-3 8601 Humboldt Trinity River Valley at Willow Creek 152 Comment
  UCD65598  Leymus triticoides Malcolm A. Nobs; S. Galen Smith 1949-8-3 1204 Humboldt Salt marshes bordering Humboldt Bay, CA. 2 miles N of Eureka. Comment
  UC314580  Ligusticum apiifolium Joseph P. Tracy 1924-8-17 6820 Humboldt Trinidad Northern Coast Ranges, Trinidad 60 Comment
  CAS-BOT-BC436495  Ligusticum californicum Joseph P. Tracy 1937-8-12 15633 Humboldt Snow Camp 1402 Comment
  RSA65318  Lilium columbianum Albert M. Vollmer, L. Beane 1951-07 s.n. Humboldt A few miles north of Arcata near U. S. Highway 101 Comment
  UC179932  Lilium columbianum Joseph P. Tracy 1914-9-7 4617 B Humboldt 10 mi e Korbel (near the Bald Mt. House); Northern Coast Ranges 914 Comment
  RSA130331  Lilium kelloggii Albert M. Vollmer, L. Beane 1953-07 119 Humboldt Freshwater Comment
  UC302156  Lilium kelloggii Joseph P. Tracy 1926-6-13 7593 Humboldt Liscom HIll; Northern Coast Ranges 457 Comment
  UC666958  Lilium kelloggii Joseph P. Tracy 1929-7-4 8637 Humboldt French Camp Ridge 1066 Comment
  CAS-BOT-BC130687  Lilium occidentale Doris K. Kildale 1925-7-1 1338 Humboldt Near Bayside Comment
  SEINET3992213  Lilium occidentale J. P. Tracy 1896-1 Humboldt Comment
  UC1198243  Lilium occidentale Joseph P. Tracy 1924-9-21 6886 Humboldt Eureka; Northern Coast Ranges 0 Comment
  UC1198235  Lilium pardalinum Joseph P. Tracy 1924-7-4 6714 Humboldt Snow Camp; Northern Coast Ranges 1371 Comment
  UCSB698  Lilium pardalinum Phillips, Priscilla 1958-6-7 Humboldt On Highway 101, 14.1 mi. south of Prairie Creek Redwoods State Park (north of Trinidad) Comment
  CAS-BOT-BC132961  Lilium rubescens Milo S. Baker 1927-8-14 2428 a Humboldt Summit of Ridge West of Bull Cr. Comment
  CAS-BOT-BC506199  Lilium vollmeri Peter H. Raven; R. Snow 1958-7-20 13641 Humboldt 1.1 miles south of junction of Friday Ridge Road on Titlow Hill Road, near Grouse Ridge Comment
  HSC100558  Lilium washingtonianum Carl C. Marshall Jun 1885 88 Humboldt Coyote Camp. Comment
  CAS-BOT-BC133014  Lilium washingtonianum subsp. purpurascens 1901-7-24 s.n. Humboldt Near Arcata Comment
  UC1537005  Limnanthes douglasii Gordon H. True Jr. 1936-5-11 462 Humboldt 12 mi w Miranda (e of Elk Ridge); Elk Ridge 457 Comment
  CHSC89511  Limnobium laevigatum Gordon Leppig; T. LaBanca 2003-3-13 1823 Humboldt Arcata, Alder Grove Pond. On south shore of wetland. UTM Zone 10, 428185 N, 410100 E. 9 Comment
  HSC90329  Limonium californicum Jean Hanson 1980-6-22 103 Humboldt Indian (Gunther) Island, Humboldt Bay, city of Eureka: W side of dike on NW side of island. Comment
  UC35157  Limonium californicum Chesnut and Drew 1888-8-11 Humboldt Eureka; marsh Comment
  UC52386  Linanthus bolanderi Joseph Burtt Davy and Walter C. Blasdale 1899-5 5370 Humboldt between Harris and Hubbards Station Comment
  CDA6372  Linaria vulgaris B. F. Kemp Jun 1946 Humboldt Eureka. 0 Comment
  HSC99851  Linnaea borealis subsp. longiflora T. Jimerson, J. Pageau 1979-6-12 533 Humboldt Near Hopkins Butte, close to the town of Orleans. 1036 Comment
  UC179969  Linnaea borealis var. longiflora Joseph P. Tracy 1914-7-5 4571 Humboldt between High Prairie and Snow Camp (Bald Mountain); Northern Coast Ranges, Bald Mountain 1219 Comment
  SJSU918  Linnaea borealis var. longiflora J. W. Tilden 1946-6-2 999 Humboldt Bluff Cr c. 1.5 mi above its junction with Klamath R Comment
  HSC59068  Linum bienne Thomas Wood 1979-5-18 193 Humboldt Arcata, adjacent and N of 2900 Janes Rd. 9 Comment
  HSC89536  Listera cordata var. nephrophylla Brad W. Klipfel 1977-5-16 Humboldt Above Van Duzen River Comment
  SEINET12034162  Lithocarpus densiflorus J. P. Tracy 1950-1 19253 Humboldt Grasshopper Peak (in Bull Creek State Park at head of Canoe Creek) Comment
  HSC98097  Lithophragma campanulatum Cara Witte, Michael Scott 2007-6-22 344 Humboldt Board Camp Mountain. Road to Tri Board Camp. 1494 Comment
  UC667091  Lithophragma campanulatum Joseph P. Tracy 1933-7-11 12689 Humboldt Grouse Mountain 1524 Comment
  UC492222  Lithophragma heterophyllum Joseph P. Tracy 1932-4-24 9827 Humboldt South Fork of Eel River between Miranda and Redway; North Coast Ranges, South Fork of Eel River 91 Comment
  HSC45285  Logfia gallica R. W. Becking 1978-5-21 Humboldt Coast Guard Station on the N Spit to Humboldt Bay in bunker area Comment
  UC163597  Lolium multiflorum Jos. Burtt Davy 1899-5 5556 Humboldt Scotia Comment
  SEINET194910 Image available Lolium perenne A. A. Heller 1923-7-9 13779 Humboldt Arcata near 10 Comment
  JEPS16098  Lomatium californicum W. L. Jepson 1902-6-20 1892 a Humboldt Fort Seward Ranch Ridge (= Mail Ridge) 1219 Comment
  HSC56050  Lomatium macrocarpum G. L. Clifton, Terry Griswold 1979-7-31 11646 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1719 Comment
  HSC71235  Lomatium macrocarpum M. A. Baker 1980-5-23 1385 Humboldt Near Buck Mtn. 1524 Comment
  HSC97413  Lomatium macrocarpum Griswold, Butler 1979-7-10 6230 Humboldt Near Kinsey Ridge, close to the town of Willow Creek 1244 Comment
  HSC33054  Lomatium macrocarpum Thomas W. Nelson 1974-5-7 1233 Humboldt Beside airstrip at Kneeland Prairie Comment
  SD264747  Lomatium utriculatum Tracey Call, Viola Call 1964-6-19 2271 Humboldt Dry, west-facing hillside 1 mile north of Harris P.O. and ca 3I(c) miles south of Harris Jct. 609 Comment
  UC168948  Lonicera hispidula var. vacillans Joseph P. Tracy 1904-7-31 2132 Humboldt Eureka Northern Coast Region 0 Comment
  UC169064  Lonicera hispidula var. vacillans Mrs. M. H. Manning 1901-1 Humboldt near Hupa Comment
  SDSU2899  Lonicera involucrata D. F. Howe 1961-8-1 3104 Humboldt 6 miles north of Trinidad on #101. Comment
  CAS-BOT-BC241487  Lonicera involucrata var. ledebourii Doris K. Kildale 1927-3-25 3002 Humboldt Humboldt Hill near Humboldt Bay Comment
  HSC3932  Lonicera involucrata var. ledebourii H. E. Parks May 1935 5542 Humboldt Spruce Cove, Trinidad. Comment
  HSC98251  Lotus aboriginus Yarick 1960-8-15 Humboldt 10 mi. W of Rd. Comment
  HSC99573  Lotus crassifolius K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-8-10 238 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
  HSC98247  Lotus formosissimus D. E. Anderson 1963-5-25 2485 Humboldt 2-3 mi. N of Capetown Comment
  HSC45023  Lotus humistratus R. Sutherland 1978-4-23 19 .23478 Humboldt Road near head of Kinsey Ridge 732 Comment
  HSC45614  Lotus humistratus Diane L. Reed 1978-5-7 51 Humboldt Friday Ridge Road, near intersection with Hwy. 299 Comment
  HSC97929  Lotus nevadensis var. douglasii Cara Witte 2007-6-14 284 Humboldt White Oak Opening. Along Kinsey Ridge. Near hunting camp. 1238 Comment
  RSA273328  Lotus oblongifolius Thomas W. Nelson, James Nelson, A. Nelson 1976-7-28 3077 Humboldt Road to Pine Mountain. 1524 Comment
  UC162606  Lotus purshianus var. purshianus Harley P. Chandler Jun 1901 1394 Humboldt Hupa Indian Reservation North Coast Ranges 152 Comment
  UC201389  Lotus purshianus var. purshianus Joseph P. Tracy 1918-7-5 5015 Humboldt White Thorne Valley Northern Coast Ranges 304 Comment
  HSC97236  Lotus purshianus var. purshianus Thomas W. Nelson, Dick Brummitt & Barbara Ertter 2004-7-4 9281 Humboldt Trinity River bar down stream from mouth of Willow Creek 152 Comment
  UC176274  Lotus purshianus var. purshianus Joseph P. Tracy 1913-7-20 4386 Humboldt Redwood Creek, at crossing of Willow Creek road Northern Coast Ranges 304 Comment
  UCR25843  Lotus uliginosus David Edwards 1974-8-12 84 Humboldt N side of 7th Street, just west of its overpass of U.S. Hwy 101, Arcata. 18 Comment
  HSC56969  Lotus unifoliolatus var. unifoliolatus Overton, Butler 1979-7-23 9498 Humboldt Near Titlow Hill, close to the town of Willow Creek. 1280 Comment
  CAS-BOT-BC201189  Lupinus Volney Rattan 1882-6-1 s.n. Humboldt Unspecified Comment
  CAS-BOT-BC201193  Lupinus L. R. Abrams 1922-6-25 8235 Humboldt 2 mi south of Fortuna Comment
  UC1925864  Lupinus Kay H. Beach 1940-5-5 479 Humboldt along north coast, N of Eureka. Comment
  UC1223294  Lupinus adsurgens Joseph P. Tracy 1938-6-17 15970 Humboldt Bull Creek-Mattole Road top of ridge near Panther Gap; top of ridge near Panther Gap, Bull Creek-Mattole Road Comment
  SEINET200685  Lupinus albifrons Joseph P. Tracy 1926-5-9 7458 Humboldt Valley of South Yager Creek Comment
  UC1197253  Lupinus albifrons Joseph P. Tracy 1926-5-9 7458 Humboldt Valley of South Yager Creek; Northern Coast Ranges, Valley of South Yager Creek 762 Comment
  UC198580  Lupinus albifrons Joseph P. Tracy 1916-6-19 4707 Humboldt Burr Creek Northern Coast Ranges, Burr Creek (on high ridges at Robertson Ranch) 914 Comment
  HSC96201  Lupinus albifrons var. collinus Wanda Naylor, Laurel Goldsmith 2005-6-24 13 Humboldt S of Grouse Mountain on NF1 1595 Comment
Read comments
Jan 16 2014
  UCD106592  Lupinus arboreus Linda M. Barker 1976-5-13 1494 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  SBBG68994  Lupinus arboreus R. Hartwell 1938-8-5 Humboldt N of Eureka Comment
  UC161547  Lupinus bicolor Joseph P. Tracy 1911-6-25 3251 Humboldt Bucksport , region about Humboldt Bay (Northern Coast Region) 0 Comment
  UC503009  Lupinus bicolor Joseph P. Tracy 1932-5-1 9889 Humboldt vicinity Garberville; Northern Coast Ranges 121 Comment
  HSC14800  Lupinus bicolor Eugene Andreuccetti 1964-4-26 20 Humboldt 1 mi. N of Garberville on Hwy. 101 Comment
  HSC32075  Lupinus bicolor Glenn McGourty 1974-4-27 35 Humboldt Along side of Mattole River Comment
  HSC38069  Lupinus latifolius Thomas W. Nelson, James Nelson 1976-5-30 2638 Humboldt McKeown Ranch, N of Dinsmore. Comment
  HSC57313  Lupinus latifolius Griswold, Butler 1979-7-10 6326 Humboldt Near Board Camp Mtn., close to the town of Willow Creek 1372 Comment
  HSC99592  Lupinus latifolius var. latifolius K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-22 261 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
  UC162167  Lupinus latifolius var. latifolius Joseph P. Tracy 1909-8-1 3065 Humboldt Kneeland Prairie , Kneeland Prairie (Northern Coast Ranges) 762 Comment
  UC865228  Lupinus latifolius var. latifolius Elizabeth Parsons Hawver June 1915 Humboldt Carlotta Comment
  JEPS48707  Lupinus latifolius var. latifolius Hilda W. Grinnell 1932-7-19 27 Humboldt eastern slope of So. Fork Mt. South Fork Mt.; eastern slope of So. Fork Mt. 1615 Comment
  UC1223291  Lupinus latifolius var. latifolius Joseph P. Tracy 1941-6-15 16916 Humboldt on the Bull Creek - Mattole Road Panther Gap (Panther Gap) Comment
  UC170164  Lupinus littoralis Joseph P. Tracy 1912-7-7 3745 Humboldt near mouth Elk River; Northern Coast Region, region about Humboldt Bay 0 Comment
  UC1223254  Lupinus littoralis Joseph P. Tracy 1938-6-16 15940 Humboldt Brainards Point, along highway between Eureka and Arcata Comment
  HSC100522  Lupinus nanus Carl C. Marshall 1885-5-11 34 Humboldt Peninsula near Fairhaven. Comment
  SBBG13914  Lupinus rivularis H. and M. Dearing 1933-5-17 2957 Humboldt N of Big Lagoon Comment
  UC503017  Lupinus rivularis Joseph P. Tracy 1927-6-18 8189 1/2 Humboldt Capetown; Northern Coast Ranges, Capetown 304 Comment
  RSA275290  Lupinus sellulus subsp. ursinus Thomas W. Nelson, Jane Nelson, A. P. Nelson 1977-6-19 3511 Humboldt Southwest of Alder Springs along road 2S08. 1463 Comment
  HSC59452  Lupinus tracyi Richard Runyon 1979-6-27 42 Humboldt Along trail to Trinity Summit Station, 50' S of intersection of Grogan hole-Devils backbone trail 1768 Comment
  HSC76513  Lupinus tracyi T. Jimerson 1981-8-5 901 Humboldt 1829 Comment
  RSA167383  Lupinus variicolor Joseph P. Tracy 1938-6-16 15940 Humboldt Brainards Point, sandy soil along highway between Eureka and Arcata. Comment
  HSC71599  Luzula comosa M. A. Baker 1980-6-26 2412 Humboldt Near Sims Creek 610 Comment
  HSC82212  Luzula comosa Thomas W. Nelson 1977-6-15 3439 Humboldt Along old road to ski area 1372 Comment
  HSC96237  Luzula comosa April A. Allard, Gregory D. O'Connell 2005-6-3 2 Humboldt 19.3mi S of Hwy. 299 on NF1 1246 Comment
  UC1103682  Luzula comosa var. laxa Joseph P. Tracy 1924-4-27 6649 Humboldt Northern Coast Ranges: Near Berry's on Redwood Creek 365 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
  UC1056033  Luzula parviflora H. E. and S. T. Parks June 1952 22446 Humboldt Bishop Pine Lodge Trinidad, Bishop Pine Lodge Comment
  UC1103686  Luzula subsessilis Joseph P. Tracy 1921-4-24 5449 Humboldt Northern Coast Ranges. Phillipsville Flat South Fork Eel River 91 Comment
  UC183776  Luzula subsessilis Joseph P. Tracy 1904-4-24 2032 Humboldt Northern Coast Region. Sand Dunes of Ocean Beach at Humboldt Bay Comment
  JEPS371  Lycopodiella inundata Joseph P. Tracy 1928-9-8 8504 Humboldt Big Lagoon Northern Coast Ranges (in peat bog) 6 Comment
  CAS-BOT-BC61933  Lycopodium clavatum Wayne Roderick 1967-9-15 s.n. Humboldt Camp 18, Georgia-Pacific Company e. of Trinidad 30 Comment
  UC302313  Lycopodium clavatum unknown Humboldt Northern Coast Region Comment
  UCSC002911  Lycopodium clavatum W. Doyle 1975-4-30 s.n. Humboldt clear-cut forest area Comment
  OBI1071  Lycopodium inundatum Lawrence L. Kiefer 1964-5-20 1436 Humboldt Big Lagoon State Park 23 Comment
  JEPS63270  Lycopus uniflorus Joseph P. Tracy 1925-10-18 7284 Humboldt Big Lagoon Northern Coast Region, Big Lagoon 6 Comment
  UCD138085  Lysichiton americanus Malcolm A. Nobs; S. Galen Smith 1949-8-3 1183 Humboldt Southern outskirts of Eureka. Comment
  UCR179284  Lysichiton americanus R. G. Swinney 1968-3-29 238 Humboldt East of Humboldt State College, Arcata 152 Comment
  HSC59495  Lysichiton americanus M. A. Ericksen 1979-4-20 212 Humboldt Adjacent to Cranell Rd. and Little River Dr. junction Comment
  JEPS20935  Lysichiton americanus W. L. Jepson 1902-6 1925 Humboldt Eureka to Arcata; Hupa Indian Reservation Comment
  RSA137264  Lysichiton americanus I. L. Wiggins 1957-6-19 14130 Humboldt East side of highway, Trinidad. Comment
  SEINET10465778  Lysichiton americanus Sacks 1977-4-8 SACKS 5 Humboldt 0.2 mi W of Highway-101 and 5 mi. N of Trinidad 61 Comment
  UC144652  Lythrum hyssopifolia J. P. Tracy 1903-8-2 1924 Humboldt immediate vicinity of Eureka 0 Comment
  HSC46151  Lythrum hyssopifolia J. P. Smith 1973-5-26 6814 Humboldt Scotia Bluffs along the Eel River near Rio Dell Comment
  HSC40412  Madia elegans Thomas W. Nelson, Jane P. Nelson 1976-7-1 2894 Humboldt Along ridge N of Bear Creek 1463 Comment
  HSC70362  Madia elegans Gail Newton 1980-6-7 124 Humboldt Near Brush Mtn. 1128 Comment
  RSA15579  Madia elegans subsp. elegans C. B. Wolf 1927-8-28 1162 Humboldt On the Trinity River, 3 miles from Weitchpec Comment
  UC165190  Madia gracilis Joseph P. Tracy 1911-6-25 3250 Humboldt at Bucksport; Eureka 0 Comment
  RSA254781  Madia madioides Thomas W. Nelson, James Nelson 1973-5-28 946 Humboldt McKeown Ranch north of Dinsmore. Comment
  HSC91907  Madia sativa E. Mackey 1978-7-19 Humboldt Patrick's Point State Park; middle of the road near cliffs Comment
  CHSC23305  Maianthemum dilatatum Robert F. Thorne; P. Everett 1965-8-7 Humboldt Big Lagoon. 1 Comment
  UC545825  Maianthemum dilatatum H. E. Parks May, 1932 4289 Humboldt Trinidad, Bishop Pine Lodge Comment
  UCR275106  Maianthemum dilatatum Charity A. Hartshorn 2016-5-14 36 Humboldt Arcata Community Forest 244 Comment
  HSC69845  Maianthemum dilatatum R. Kalal 1979-5-5 47 Humboldt Fickle Hill Rd., 1.0 mi. E of 11th St. 183 Comment
  SD53198  Maianthemum dilatatum Darley F. Howe 1962-5-21 Humboldt 35.5 miles north of Garberville, on #101. 60 Comment
  SEINET3992237  Maianthemum dilatatum C. O. Baker 1962-5-7 Humboldt 2 miles south of Trinidad along Hwy 101. Comment
  SBBG1057  Maianthemum racemosum H. and M. Dearing 1933-5-16 259 Humboldt Weott Comment
  HSC70565  Maianthemum racemosum subsp. amplexicaule M. A. Baker 1980-7-23 3186 Humboldt Near Orleans Mtn. 1859 Comment
  HSC74330  Maianthemum racemosum subsp. amplexicaule Gail Newton 1980-6-16 145 Humboldt Near Monks Camp. 1097 Comment
  CAS-BOT-BC511451  Maianthemum racemosum subsp. amplexicaule S. Morrissette; J. Williams; K. Kopper 1994-5-6 049 Humboldt 0.35 mile south of Hwy 299 on Titlow rd. 853 Comment
  HSC45273  Maianthemum racemosum subsp. amplexicaule Brad Klipfel 1973-4-28 7 Humboldt Along Korbel to Maple Creek Rd., Canyon Creek Comment
  RSA21602  Maianthemum racemosum subsp. amplexicaule Carl B. Wolf 1937-9-14 9349 Humboldt North Coast Range, Lord Ellis Road, 0.5 mile east of summit of Willow Creek Grade 762 Comment
  CAS-BOT-BC512769  Maianthemum stellatum Carl B. Wolf 1937-6-18 8887 Humboldt Table Bluff between Humboldt Bay and Eel River 30 Comment
  HSC54205  Malacothrix clevelandii Griswold, Butler 1979-7-12 7248 Humboldt Near Cedar Creek, close to the town of Willow Creek 1158 Comment
  UC33287  Malacothrix floccifera C. C. Marshall 1888-1-1 Humboldt 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
  UC303165  Malus fusca Joseph P. Tracy 1923-6-20 6304 Humboldt White Thorne Valley; Northern Coast Ranges 304 Comment
  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
  UC673056  Malva nicaeensis Joseph P. Tracy 1940-9-26 16734 Humboldt at s end of Humboldt Bay, Salmon Creek Valley Salmon Creek Valley; Humboldt Bay, Salmon Creek Valley 9 Comment
  UC902195  Malva nicaeensis Joseph P. Tracy 1946-11-10 17662 Humboldt Trinidad 3 Comment
  HSC73820  Marah oregana Gail Newton 1980-6-7 135 Humboldt Near Brush Mtn. 1128 Comment
  SDSU5797  Marah oregana D. F. Howe 1961-8-1 3116 Humboldt 3.3 miles north of Trinidad on #101. Comment
  HSC14974  Medicago polymorpha Jack Rockwell 1962-5-12 74 Humboldt N of Bridgeville in hillside canyon 213 Comment
  UC1103760  Melica californica Joseph P. Tracy 1950-6-15 18780 Humboldt 5 mi n Harris; Mail Ridge 944 Comment
  UC1132260  Melica geyeri H. S. Yates 1936-6-17 5717 Humboldt South Fork Pk , Burr Valley (Burr Valley) 1036 Comment
  HSC101165  Melica harfordii Dana York, Kim Hayler 2012-5-18 3105 Humboldt Six Rivers National Forest, near Somes Bar, 585 meters SE of the confluence of the Klamath and Salmon Rivers, E and above Hwy. 96. 213 Comment
  UCD88677  Melica subulata Joseph. P. Tracy 1942-6-2 17100 Humboldt 2 miles north of Bridgeville. 609 Comment
  CHSC31285  Melilotus albus Mark Stopher 1980-7-18 119 Humboldt Occasional plants along route 101 south of Eureka near Elk River. Comment
  HSC15010  Melilotus albus Paul Shields Aug 1955 Humboldt 2 mi. N of Weott Comment
  JEPS79933  Mentha pulegium Joseph P. Tracy 1933-8-22 12985 Humboldt near Loleta; near Loleta 6 Comment
  UC577382  Mentha pulegium Joseph P. Tracy 1930-9-1 9175 Humboldt South Fork of Eel River Miranda; South Fork of Eel River 121 Comment
  SEINET2031086 Image available Menziesia ferruginea Joseph P. Tracy 1908-1 2676 Humboldt Region about Humboldt Bay; in redwood forest on Freshwater Creek 0 Comment
  HSC7850  Menziesia ferruginea subsp. ferruginea F. Morrell 1949-4-22 11 Humboldt Back Humboldt State University fish hatchery Comment
  SEINET3410193 Image available Micranthes ferruginea Joseph P. Tracy 1935-7-24 14186 Humboldt Trinity Summit; Rocky exposed places, Near Ranger Station 1829 Comment
  HSC102515  Micranthes nidifica M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-28 1501 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1106 Comment
  UC204748  Microseris bigelovii Joseph P. Tracy 1918-7-3 4993 Humboldt Shelter Cove Northern Coast Ranges 15 Comment
  CAS-BOT-BC322681  Microseris laciniata Harley P. Chandler 1901-6-1 1408 Humboldt Klamath River 243 Comment
  JEPS13226  Microseris laciniata subsp. laciniata Joseph P. Tracy 1936-6-17 14942 Humboldt Bridgeville 198 Comment
  HSC58707  Microseris nutans Griswold, Butler 1979-7-12 7149 Humboldt Near Groves Prairie, close to the town of Willow Creek 1256 Comment
  UC1199449  Microseris nutans Joseph P. Tracy 1932-7-12 10485 Humboldt Head of Brett Hole Trinity Summit 1828 Comment
  JEPS10486  Mimulus arvensis Joseph P. Tracy 1926-5-2 7435 Humboldt near South Fork; Trinity River Valley 182 Comment
  HSC20685  Mimulus aurantiacus var. aurantiacus Steve Dorei 1970-10-31 132 Humboldt Scotia bluff area, N side of railroad tracks. Comment
  HSC20692  Mimulus aurantiacus var. aurantiacus D. E. Anderson 1961-8-25 1755 Humboldt 1.5 miles S of Trinidad. overlooking beach Comment
  HSC89450  Mimulus aurantiacus var. aurantiacus P. A. Daly 1984-5-8 15 Humboldt Trinidad Head 61 Comment
  JEPS17993  Mimulus aurantiacus var. aurantiacus George B. Rossbach 1955-6-10 504 Humboldt 2 mi n Stephens Redwood Grove (Route 101); South Fork of Eel River Comment
  HSC55737  Mimulus breweri G. L. Clifton, Griswold 1979-7-26 10234 Humboldt Near High Spring, close to the town of Forks of Salmon 2024 Comment
  HSC56069  Mimulus breweri G. L. Clifton, Griswold 1979-7-31 11735 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa. 1845 Comment
  JEPS13355  Mimulus dentatus H. E. and S. T. Parks May, 1930 744 Humboldt above Carlotta; Van Duzen River Comment
  UC446440  Mimulus guttatus P. E. Goddard 1906-6 678 Humboldt Lasseck Pk. Comment
  JEPS25699  Mimulus guttatus P. C. Hutchison 1961-5-22 2033 Humboldt 1/2 mi above Somes Bar (Hiway 299 ca. 100 ft. from Siskiyou Co. line) Comment
  CDA41715  Mimulus kelloggii K. Esau 1935-4-23 s.n. Humboldt Ft. Seward. 0 Comment
  HSC75474  Mimulus moschatus J. O. Sawyer 1980-7-18 3621 Humboldt North Trinity Mountain Research Natural Area, north of Mill Creek Lake to Red Cap Hole. Comment
  UC26991  Mimulus nasutus C. C. Marshall 1888-1 Humboldt Comment
  HSC12793  Mimulus pilosus Jana Kattenhorn 1970-10-28 149 Humboldt Mad River at the mouth of Lindsey Creek, N Bank Rd. off Hwy. 299 Comment
  UC582442  Mimulus pilosus Joseph P. Tracy 1925-11-1 7300 Humboldt Shively; on river bar 60 Comment
  HSC75461  Mimulus primuloides J. O. Sawyer 1980-7-18 3610 Humboldt North Trinity Mountain Research Natural Area, north of Mill Creek Lake to Red Cap Hole. Comment
  JEPS11056  Mimulus primuloides Joseph P. Tracy 1935-7-26 14258 Humboldt Water Dog Lakes Trinity Summit 1828 Comment
  UC147912  Mimulus pulsiferae Joseph P. Tracy 1908-6 2828 Humboldt Buck Mountain Northern Coast Ranges (nw slope, along waterway) 1219 Comment
  CAS-BOT-BC388626  Minuartia douglasii Joseph P. Tracy 1935-6-23 13972 Humboldt French Camp Ridge 1066 Comment
  HSC73758  Minuartia douglasii Gail Newton 1980-7-11 1335 Humboldt Near Red Mtn. 1341 Comment
  HSC4087  Minuartia nuttallii subsp. gregaria D. E. Anderson 1965-6-1 3763 Humboldt Horse Mountain, W facing slope 1220 Comment
  UC1198868  Mitella diversifolia Joseph P. Tracy 1937-7-2 15412 Humboldt Little Hors-Linto Creek Trinity Summit (head) 1371 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
  JEPS49691  Mitella ovalis Joseph P. Tracy 1923-4-8 6176 Humboldt Carlotta Northern Coast Ranges (along stream) 60 Comment
  HSC55867  Mitella trifida G. L. Clifton, Griswold 1979-7-25 10889 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1784 Comment
  CHSC97981  Moehringia macrophylla J. McIntire; S. Lyon 2005-6-10 7 Humboldt 7.4 mi south of Hwy 299 on Forest Service Rd. NF1. Cold Springs Camp. 1402 Comment
  HSC64186  Moehringia macrophylla J. O. Sawyer, M. A. Ericksen 1979-6-23 3389 Humboldt Slopes below Mill Creek Lakes 1585 Comment
  HSC67209  Moehringia macrophylla Thomas W. Nelson, James Nelson 1980-6-10 5437 Humboldt Along E side of Red Mtn. 1372 Comment
  UC1223238  Moehringia macrophylla Joseph P. Tracy 1951-6-26 19558 Humboldt halfway between Snow Camp and Twin Lakes ((at Charley Preston's old gate near the road)); between Snow Camp and Twin Lakes Comment
  HSC97492  Moehringia macrophylla Cara Witte 2007-5-23 112 Humboldt Grouse Mountain Lookout. Forest Service Road 4N70. 1635 Comment
  HSC58044  Monardella odoratissima subsp. pallida Gilbert Muth 1979-8-1 11900 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1877 Comment
  POM283164  Monardella villosa Lyman Benson 1928-7-12 476 Humboldt Weott Ranger Station. 61 Comment
  SEINET13948727 Image available Monardella villosa H. Lewis 1940-1 Humboldt 1 mi N of Richardson Grove State Park Comment
  UC162959  Monardella villosa subsp. villosa Joseph P. Tracy 1911-7-9 3476 Humboldt Near Willow Creek west side of river; Northern Coast Ranges, Trinity River 182 Comment
  JEPS14830  Monotropa hypopitys W. L. Jepson 1902-6 1946 Humboldt woods near Green Pt. Ranch; Hupa Road Comment
  SEINET3000074 Image available Montia chamissoi Joseph P. Tracy 1932-7-10 10378 Humboldt Trinity Summit, open places at Corral Prairie Comment
  POM168985  Montia howellii Joseph P. Tracy 1916-5-7 4686 Humboldt Eureka Comment
  HSC33082  Montia parvifolia Thomas W. Nelson, J. D. Ackerman 1974-5-14 1269 Humboldt Baker Beach, 4 mi. S of Trinidad Comment
  UCD86799  Muhlenbergia mexicana P. B. Kennedy 1923-8-5 s.n. Humboldt West fork of Eel River between Phillipsville and Garberville. Comment
  HSC95678  Myosotis sylvatica Steven Lee 2004-4-13 18 Humboldt Arcata Community Forest, hillside along Jolly Giant Creek Comment
  HSC3730  Myosotis sylvatica William J. Ferlatte 1963-5-17 48 Humboldt Near 11th and B Sts., Arcata Comment
  UC1196177  Myosurus minimus Mrs. Emma N. Cathey 1936-7 Humboldt near Miranda (Cathey Ranch); Cathey Ranch 304 Comment
  HSC62986  Myriophyllum hippuroides David Wheeler 1979-4-21 76 Humboldt 14 mi. up Snow Camp Rd., 4 mi. past Ward Rd., in Lake Prairie Comment
  HSC77911  Myriophyllum spicatum Randy Nyman 1978-10-22 Humboldt Fish Lake 549 Comment
  HSC45289  Navarretia capillaris Brad Klipfel 1973-6-10 293 Humboldt E face of Grogan's Hole, N Trinity Mtn. area 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
  UC908394  Navarretia divaricata subsp. vividior Joseph P. Tracy 1934-7-9 13326 Humboldt n of Bell Springs; Northern Coast Ranges, Chamise Mt. 1066 Comment
  UC60864  Navarretia intertexta Mrs. M. H. Manning Apr 1901 Humboldt Hupa Comment
  UC1008728  Navarretia intertexta Henry M. Pollard 1945-8-26 Humboldt n of Orleans (road to old mine); Klamath River Canyon Comment
  UC52743  Navarretia linearifolia subsp. pinnatisecta Chestnut and Drew 1888-7-23 Humboldt Hy-Am-Pum Comment
  JEPS70462  Navarretia squarrosa W. L. Jepson 1921-8-11 9416 Humboldt Big Lagoon Humboldt Coast Comment
  UC52878  Navarretia tagetina Chesnut and Drew 1888-7-23 Humboldt Hy-Am-Pum Comment
  HSC13570  Nemophila heterophylla Doris K. Kildale 1926-4-25 1802 Humboldt Willow Creek Flat 152 Comment
  OBI13911  Nemophila menziesii Carl B. Wolf 1937-6-19 8915 Humboldt North Coast Range, 3 mi W of Little Van Duzen River at summit of grade-Dinsmore to Bridgeville 762 Comment
  CHSC97984  Nemophila menziesii var. atomaria Andrew Byers; Stuart E Richardson III 2005-6-10 9 Humboldt 7.4 mi south of Hwy 299 on NF1. Coldspring Camp. 1357 Comment
  RSA33408  Nemophila menziesii var. atomaria Doris K. Kildale 1929-2-19 4265 Humboldt Little River. Comment
  UC562583  Nemophila menziesii var. atomaria Joseph P. Tracy 1926-5-9 7464 Humboldt Valley of South Yager Creek 762 Comment
  UC67069  Nemophila menziesii var. atomaria H. P. Chandler 1276 Humboldt Hupa Mts. Comment
  CAS-BOT-BC219410  Nemophila parviflora Alice Eastwood; John Thomas Howell 1937-6-24 4864 Humboldt Road to Horse Mt. Comment
  UC146185  Nemophila pedunculata Joseph P. Tracy 1908-6 2700 Humboldt opposite Buck Mountain; Northern Coast Ranges, valley of Van Duzen River 457 Comment
  CAS-BOT-BC60563  Noccaea fendleri subsp. glauca Lincoln Constance; Reed C. Rollins 1942-5-12 2887 Humboldt Klamath-Siskiyou Region. Klamath River 7 miles northeast of Weitchpec. 121 Comment
  OBI14330  Notholithocarpus densiflorus var. densiflorus H. E. McMinn 1931-6-27 2542 Humboldt Summit above Weitepp; T & K river Comment
  UCD124038  Nuttallanthus texanus Linda M. Barker 1976-6-1 1550 Humboldt Lanphere-Christensen Dunes, 3 miles west of Arcata. Comment
  UCSB15645  Nuttallanthus texanus Breedlove, Dennis 1962-6-7 Humboldt 1.5 miles south of Samoa; on peninsula on western side of Humboldt Bay Comment
  HSC20655  Nuttallanthus texanus Francis Winter 1960-4-19 Humboldt Samoa Peninsula, Fairhaven Airport entrance, 12 mi. W of Arcata Comment
  UC203964  Nuttallanthus texanus J. P. Tracy 1918-5-5 4921 Humboldt Ocean Beach at Humboldt Bay Ocean Beach; Northern Coast Region, Humboldt Bay, Ocean Beach Comment
  CAS-BOT-BC142296  Oemleria cerasiformis Doris K. Kildale 1926-3-2 1862 Humboldt Willow Creek Flat, Trinity River Valley 152 Comment
  RSA293126  Oemleria cerasiformis Thomas W. Nelson 1976-3-22 2276 Humboldt moist hillside beside Eureka Muni. Golf Course. Comment
  UC154222  Oemleria cerasiformis Joseph P. Tracy 1909-6-13 2993 Humboldt near Blue Lake; Northern Coast Ranges, Mad River Valley 30 Comment
  UC666832  Oemleria cerasiformis Joseph P. Tracy 1937-6-20 15356 Humboldt 10 mi up stream mouth of Bear River; Bear River 152 Comment
  HSC21579  Oenanthe sarmentosa Paul Shields 1955-6-16 Humboldt Humboldt State campus Comment
  HSC26680  Oenanthe sarmentosa John R. Keith 1973-5-15 Humboldt Abandoned log pond about 300 yds. E of junction of Guintoli Ln. and West End Rd. Comment
  CHSC70154  Oenothera glazioviana David K. Imper 1993-6-15 Humboldt Base of sand dunes, south end of Manila, west of Eureka. 6 Comment
  UC203990  Oenothera wolfii Joseph P. Tracy 1918-7-1 4968 Humboldt moist bluff Northern Coast Ranges, Cape Mendocino (three mi s of point of cape) 3 Comment
  UC1197455  Orobanche fasciculata Joseph P. Tracy 1911-7-7 3222 Humboldt Northern Coast Ranges. Brannan Mountain, viz. ridge north of Willow Creek, between Willow and Campbell Creeks, near Summit. Comment
  HSC98561  Orobanche uniflora Cara Witte 2008-6-15 733 Humboldt Coldspring Camp. 1410 Comment
  UC1197450  Orobanche uniflora subsp. occidentalis Joseph P. Tracy 1908-6 2881 Humboldt Valley of Van Duzen River, opposite Buck Mountain. Comment
  UC1197566  Orthilia secunda Joseph P. Tracy 1940-7-7 16663 Humboldt Grouse Mt. on Friday Ridge 1371 Comment
  HSC104436  Orthilia secunda Bianca Hayashi 2013-6-18 Humboldt Northwest of Snow Camp Mountain Comment
  RSA97541  Orthocarpus erianthus var. gratiosus L. S. Rose 1954-4-25 54014 Humboldt Samoa. Region of type locality. Comment
  POM43760  Orthocarpus faucibarbatus var. albidus Marcus E. Jones 1924-4-26 s.n. Humboldt Eureka. Comment
  JEPS26161  Orthocarpus imbricatus E. Ethel Tracy 1919-8-1 Humboldt Trinity Summit; Northern Coast Ranges, Trinity Summit 1524 Comment
  UC1222795  Orthocarpus imbricatus Joseph P. Tracy 1950-8-8 19285 Humboldt Croghan Hole Trinity Summit (Trinity Summit); , Croghan Hole 1676 Comment
  POM67067  Orthocarpus lithospermoides Marcus E. Jones 1924-4-28 s.n. Humboldt Dyerville. Comment
  HSC21583  Osmorhiza berteroi R. D. Zortman 1963-5-15 49 Humboldt 5 mi. NE of Arcata, S of the Mad River, off Warren Creek Rd. 91 Comment
  BLMAR209  Osmorhiza berteroi Jennifer Anthony-Wheeler 1996-7-9 209 Humboldt Pilot ridge, growing throughout shady understory Comment
  HSC79449  Osmorhiza berteroi Kenneth Clark 1980-4-18 576 Humboldt On access trail to Dead Man's Gulch 52 Comment
  HSC97459  Osmorhiza occidentalis C. Witte 2007-5-22 85 Humboldt Cold Spring. 1/2 mile south of Titlow Hill. 1390 Comment
  UC183665  Osmorhiza occidentalis Joseph P. Tracy 1913-6-20 4238 Humboldt Buck Mountain Northern Coast Ranges (lower foothills, on nw slope) 762 Comment
  HSC12761  Oxalis articulata subsp. rubra M. J. Athey 1970-11-8 12 Humboldt Along Arcata blvd., in Arcata. Comment
  CHSC70834  Oxalis incarnata Vernon Oswald 1998-4-16 8918 Humboldt Samoa Dunes Recreation Area at the south tip of the North Spit of Humboldt Bay. Along the road leading into the recreation area. 6 Comment
  UCD110986  Oxalis oregana K. Twitchell 1996-5-11 24 Humboldt Crannell, coastal cliffs along old Highway 101 at Moonstone beach access. 36 Comment
  HSC8609  Oxalis oregana R. A. Rasp 1964-4-5 30 Humboldt 7 mi. past Hoopa on Willow Creek Rd. Comment
  POM353446  Oxalis oregana Hutchinson 1927-5-27 s.n. Humboldt [No location data on label] Comment
  UCD110982  Oxalis oregana R. Raynor 1936-3-21 s.n. Humboldt Fort Seward. Comment
  SEINET516268  Oxalis pes-caprae Vernon H. Oswald 1998-4-16 8917 Humboldt Samoa Dunes Recreation Area at the south tip of the North Spit of Humboldt Bay. Comment
  HSC102179  Oxalis trilliifolia M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-3 1092 Humboldt Patterson Meadows 1566 Comment
  HSC70179  Packera bolanderi Thomas W. Nelson, Jane P. Nelson 1978-7-4 4415 Humboldt Along county road ca. 3 mi. SE of Kneeland Airport 762 Comment
  CAS-BOT-BC318152  Packera bolanderi var. bolanderi E. Hawver 1915-6-1 s.n. Humboldt near Carlotta Comment
  UC39291  Panicum acuminatum var. acuminatum Joseph Burtt Davy and Walter C. Blasdale 1899-6-29 5894 Humboldt near Martin's Ferry (North-Western California); near Martin's Ferry Comment
  UC526840  Panicum acuminatum var. acuminatum Joseph P. Tracy 1931-5-17 9427 Humboldt at Willow Creek Willow Creek; Northern Coast Ranges, Trinity River Valley 152 Comment
  UC1145036  Panicum oligosanthes var. scribnerianum Joseph P. Tracy 1939-4-29 16246 Humboldt 8 mi below Orleans; Klamath River near Slate Creek 121 Comment
  CAS-BOT-BC253925  Parapholis incurva S. K. Harris; J. P. Tracy 1936-6-6 3218 Humboldt Near railroad station, Eureka Comment
  HSC10522  Paspalum dilatatum DWC 1956-8-23 Humboldt Blocksburg Comment
  UCD88947  Paspalum distichum Joseph P. Tracy 1939-10-6 16505 Humboldt Eureka. West of Sunset Cemetary. Comment
  BLMAR697  Paxistima myrsinites Jennifer Wheeler 2011-5-24 697 Humboldt Lacks Creek, Pine Ridge/Stormy saddle road junction 975 Comment
  HSC58131  Paxistima myrsinites Gilbert Muth 1979-8-1 12133 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1677 Comment
  UC169090  Pedicularis densiflora Mrs. M. H. Manning 1902-2 Humboldt near Hupa Comment
  HSC20922  Pedicularis densiflora P. W. Shields May 1955 Humboldt 5 mi. W of Willow Creek Comment
  HSC60284  Pedicularis densiflora Richard Spjut 1979-3-25 5425 Humboldt Tish Tang Campground, 2 mi. E of Hoopa, above the river Comment
  JEPS10351  Pedicularis densiflora Joseph P. Tracy 1927-5-15 8060 Humboldt near summit on road w from Hoopa to Bair's; Northern Coast Ranges, Hoopa Mountain 1066 Comment
  SEINET10548991  Pedicularis densiflora subsp. densiflora Jones 1985-4-20 Jones 21 A Humboldt T34n,r6e,sec.21. Burnt ranch campground, shasta-trinity ntl. Froest. Found at Entrance to campground 433 Comment
  HSC99555  Pedicularis racemosa K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-8-10 220 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  CHSC63423  Penstemon anguineus Vernon H. Oswald 1994-6-29 6362 Humboldt Titlow Hill Rd. (Forest Rd. 1) 10.8 mi S of Hwy. 299, 0.6 mi S of Friday Ridge Rd., S of Willow Creek. 1548 Comment
  JEPS7213  Penstemon anguineus Lincoln Constance 1934-6-19 905 Humboldt Grasshopper Pk near summit South Fork Eel River, Bull Creek Region 914 Comment
  HSC73698  Penstemon laetus subsp. sagittatus M. A. Baker 1980-7-15 2971 Humboldt Near Whiting Ridge. 1341 Comment
  HSC74399  Penstemon laetus subsp. sagittatus Gail Newton 1980-6-28 731 Humboldt Near Mad River Butte. 1536 Comment
  RSA120319  Penstemon laetus var. sagittatus S. S. Tillett 1956-7-6 608 Humboldt On E facing slope above Klamath River, along Ishi Rish Road, approx. 1.5 mi from Orleans. 198 Comment
  POM15900  Penstemon rattanii subsp. rattanii Joseph P. Tracy 1906-6-10 2480 Humboldt Kneeland Prairie. 762 Comment
  HSC1080  Pentagramma triangularis D. E. Anderson 1963-3-16 2389 Humboldt Scotia Bluffs Comment
  HSC39986  Pentagramma triangularis Linda M. Barker 1976-3-11 1329 Humboldt 3 mi. W of Arcata Comment
  HSC37502  Pentagramma triangularis J. D. Ackerman 1974-5-25 264 Humboldt 0.25 mi. S of Lufenholtz Beach off Scenic Dr. between Moonstone and Trinidad Comment
  UC1197324  Perideridia kelloggii Joseph P. Tracy 1921-10-2 5967 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  CAS-BOT-BC413711  Persicaria hydropiper Henry M. Pollard 1956-10-9 s.n. Humboldt Fig Tree Riffle at Woodson Mine, Klamath River, Orleans Comment
  RSA167253  Petasites palmatus Joseph P. Tracy 1947-2-23 17670 Humboldt Van Duzen River, near Grizzly Creek. 91 Comment
  SEINET11809913  Petasites palmatus Unknown 1937-1 13350 Humboldt near Trinidad Comment
  HSC63487  Petrorhagia dubia M. A. Baker 1977-6-6 381 Humboldt Hoopa Indian Reservation Comment
  UC175732  Phacelia egena Joseph P. Tracy 1913-6-13 4112 Humboldt opposite Buck Mountain; Northern Coast Ranges, valley of Van Duzen River 762 Comment
  POM127633  Phacelia heterophylla subsp. virgata H. P. Chandler 1901-05 1257 Humboldt Redwood belt. 152 Comment
  JEPS1200  Phacelia malvifolia Joseph P. Tracy 1934-6-10 13212 Humboldt DRY LAGOON (Along coast in front South End of Stone Lagoon.) Comment
  UC169011  Phacelia nemoralis subsp. oregonensis Harley P. Chandler 1901-6-4 1336 Humboldt Campbell Creek North Coast Ranges, Hupa Indian Reservation 152 Comment
  UC562579  Phacelia rattanii Joseph P. Tracy 1923-6-20 6305 Humboldt White Thorn Valley 304 Comment
  UC1127362  Philadelphus lewisii R. Stahelin 1933-7-18 Humboldt Korbel near Riverside Plant. Korbel, 7.5 Q. Comment
  SEINET202724  Philadelphus lewisii subsp. californicus Joseph P. Tracy 1950-6-18 18853 Humboldt Along Redwood Creek, two miles west of Briceland. Comment
  UC1145044  Phleum pratense Joseph P. Tracy 1947-8-24 17899 Humboldt Meadow at Box Camp Trinity Summit 1463 Comment
Read comments
Aug 5 2009
  HSC65479  Phlox adsurgens M. A. Baker 1980-6-7 1806 Humboldt Near Brush Mtn. 1128 Comment
  RSA141271  Phlox adsurgens Joseph P. Tracy 1932-7-13 10488 Humboldt Trinity Summit; fir woods near Corral Prairie. 1585 Comment
  HSC72818  Phlox diffusa M. A. Baker 1980-6-16 1943 Humboldt Near Onion Mtn. 1280 Comment
  HSC17159  Phlox diffusa D. E. Anderson 1965-4-24 3529 Humboldt Horse Mtn. 1524 Comment
  RSA141274  Phlox diffusa subsp. diffusa Joseph P. Tracy 1927-6-12 8126 Humboldt Horse Mountain 1433 Comment
  CAS-BOT-BC60608  Phoenicaulis cheiranthoides Thomas W. Nelson; James L. Nelson 1980-6-10 s.n. Humboldt Along Swayback Ridge 4-wheel drive road ca. 2.5 miles north of junction with Forest Service Road 1S07. 1463 Comment
  JEPS26749  Phoradendron villosum W. L. Jepson 1932-7-24 16545 Humboldt ca. 6 1/2 mi. above & e. Garberville (from near rd. along summit of Mail Ridge) 914 Comment
  HSC21903  Phyllospadix scouleri D. E. Anderson 1963-10-28 2886 Humboldt Luffenholtz Beach Comment
  POM161067  Phyllospadix torreyi H. E. Parks 1924-8-7 s.n. Humboldt Trinidad. Comment
  CAS-BOT-BC140584  Physocarpus capitatus Carl D. Duncan 1920-9-22 s.n. Humboldt Hoopa Valley Comment
  HSC18711  Physocarpus capitatus C. B. Wolf 1927-8-30 1248 Humboldt 3 mi. S of Thorn along old coast road Comment
  JEPS44665  Physocarpus capitatus Lincoln Constance 1934-5-26 656 Humboldt s end Dyerville Bridge (s bank of S. Fork of Eel River); Bull Creek Region Comment
  UC160987  Physocarpus capitatus Joseph P. Tracy 1911-5-29 3270 Humboldt near Hydesville 60 Comment
  CAS-BOT-BC73443  Picea sitchensis Doris K. Kildale 1927-5-14 3201 Humboldt Big Lagoon Comment
  RSA134613  Picea sitchensis P. C. Everett, E. K. Balls 1959-10-25 23969 Humboldt 3 miles S from Ferndale, on Old Coast Road to Capetown. 427 Comment
  UCD134310  Picea sitchensis Roman Gankin 1965-8-6 551 Humboldt 1.3 miles south of Samoa, Samoa Peninsula. Comment
  UC1585370  Pinus contorta subsp. contorta R. Raiche, K. Zadnik, and H. Forbes 1989-10-2 UCBG 15 Humboldt w of Eureka (0.5 km s of Hwy. 255 on New Navy Base Rd. on North Spit of Samoa Peninsula, unstabilized dune system); North Spit Samoa Peninsula 5 Comment
  HSC54523  Pinus jeffreyi Overton, Butler 1979-7-23 9455 Humboldt Near Horse Mountain Mine, close to the town of Willow Creek 1295 Comment
  CAS-BOT-BC73113  Pinus lambertiana Doris K. Kildale 1926-9-5 2611 Humboldt Lassecks Peaks, Goat Camp 1661 Comment
  HSC72802  Pinus monticola Gail Newton 1980-6-16 160 Humboldt Near Monks Camp. 1097 Comment
  HSC72826  Pinus monticola Gail Newton 1980-6-16 192 Humboldt Near Onion Mtn. 1280 Comment
  RSA275331  Pinus monticola Robert M. Specht 1977-11-20 1190 Humboldt Near Hwy. 101, flats along Gerogia Pacific s A-line. 122 Comment
  CAS-BOT-BC79030  Pinus ponderosa Doris K. Kildale 1927-12-1 4199 Humboldt Klamath River at Orleans Comment
  JEPS64429  Piperia elegans W. L. Jepson 1932-7-25 16399 Humboldt Bull Creek South Fork Eel River Comment
  UC13527  Piperia elegans Chesnut and Drew 1888-7-10 Humboldt Jarnnigan's Jarnigan's Comment
  UCD139013  Piperia elegans subsp. elegans Linda M. Barker 1976-7-5 1635 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  UC1196420  Piperia elongata Joseph P. Tracy 1948-8-22 18100 Humboldt 5 mi e Carlotta (by old Strong's District School House) 60 Comment
  RSA273348  Piperia transversa J. D. Ackerman 1974-8-13 404 Humboldt Ca. 2 miles north of Manila, between sand dunes and Mad River Slough Comment
  HSC98111  Piperia unalascensis Cara Witte 2007-6-26 356 Humboldt Horse Mountain Botanical Area. Forest Service Road 6N36A. 1348 Comment
  UC1197759  Pityopus californicus Joseph P. Tracy 1936-6-10 14915 Humboldt Willow Creek Canyon Northern Coast Ranges 609 Comment
  UC526818  Plagiobothrys hispidulus Joseph P. Tracy 1932-7-10 10386 Humboldt wet meadow at Corral Prairie Klamath Mountains, Trinity Summit 1524 Comment
  JEPS68075  Plagiobothrys nothofulvus W. L. Jepson 1934-5-7 16738 Humboldt Buckeye Prairie Bull Creek Comment
  UC526821  Plagiobothrys reticulatus Joseph P. Tracy 1932-5-10 9962 Humboldt Mattole Valley near Petrolia; Northern Coast Ranges, Mattole Valley 30 Comment
  UC526826  Plagiobothrys reticulatus Joseph P. Tracy 1927-7-10 8245 Humboldt Alton North Coast Ranges, Alton 60 Comment
  SEINET12275926  Plagiobothrys trachycarpus J. P. Tracy 1942-1 17355 Humboldt 1 mi NE of Garberville 305 Comment
  JEPS6422  Plantago erecta Joseph P. Tracy 1932-5-10 9930 Humboldt Bear River Ridge Northern Coast Ranges, Mattole Valley 609 Comment
  POM161948  Plantago hirtella var. galeottiana Joseph P. Tracy 1921-7-10 5849 Humboldt Big Lagoon. 6 Comment
  HSC37930  Plantago lanceolata Peter Sorensen 1976-6-4 Humboldt N Spit Comment
  JEPS7136  Plantago lanceolata Lincoln Constance 1934-5-27 700 Humboldt s end Dyerville Bridge (on South Fork Eel River); South Fork Eel River, Bull Creek Region 45 Comment
  UC1116244  Plantago major Joseph P. Tracy 1942-7-25 17300 Humboldt 6 mi se Arcata; Fickle Hill 609 Comment
  HSC37954  Plantago maritima Peter Sorensen 1976-6-2 Humboldt Woodley Island Comment
  UC1196129  Plantago maritima var. juncoides Joseph P. Tracy 1900-7-4 866 Humboldt Samoa Northern Coast Region, Humboldt Bay Region 0 Comment
  SEINET10297967  Platanthera dilatata var. dilatata Unknown 1965-8-9 s.n. Humboldt BIG LAGOON: Elev. c. 10 ft Comment
  UC275576  Platanthera sparsiflora Joseph P. Tracy 1923-6-24 6369 Humboldt near High Prairie; Northern Coast Ranges, Bald Mountain 1066 Comment
  CAS-BOT-BC91642  Platystemon californicus W. R. Dudley 1899-6-1 s.n. Humboldt Eureka Peninsula. Comment
  HSC95538  Platystemon californicus Andrea Pickart 2002-3-14 8 Humboldt Samoa Dunes, BLM Endangered Plant Protection Area 0 Comment
  UC169035  Plectritis congesta Joseph P. Tracy 1908-6-8 2625 Humboldt Northern Coast Ranges, Kneeland Prairie Kneeland Prairie; Northern Coast Ranges, Kneeland Prairie 762 Comment
  SEINET14400441  Plectritis congesta Unknown 1938-6-11 719 d Humboldt Humboldt County 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
  UC1258213  Pleuropogon refractus Paul But 1975-6-1 P 13 Humboldt about 10 mi n of Orick; Prairie Creek Redwood State Park Comment
  SEINET10602042  Pleuropogon refractus Harley P. Chandler Chandler 1107 Humboldt Bay. 15 Comment
  UC1132594  Poa bulbosa H. L. Person 1932-5-11 Humboldt near Arcata; Eureka Quadrangle Comment
  HSC10704  Poa douglasii R. H. Berg 1963-5-8 67 Humboldt On sand dunes near Lanphere's, Arcata. Comment
  HSC46978  Poa douglasii J. P. Smith, Thomas W. Nelson 1977-6-30 9223 Humboldt Samoa Peninsula just E of the drag strip 6 Comment
  UC665695  Poa douglasii H. E. Parks May, 1934 4805 Humboldt Little River Lagoon Comment
  UC70825  Poa douglasii Joseph Burtt Davy and Walter C. Blasdale 1899-7-30 6181 Humboldt Ferndale Comment
  UCD91136  Poa howellii A. H. Murphy 1951-2-27 3 Humboldt along the Eel River, near Fort Seward Hotel. Comment
  SEINET200574 Image available Poa kelloggii Joseph P. Tracy 1911-6-4 3219 Humboldt Along Little River, 5 miles from the coast. 122 Comment
  UC187251  Poa kelloggii Joseph P. Tracy 1911-6-4 3219 Humboldt along Little River (5 mi from coast); Northern Coast Region 121 Comment
  HSC26627  Poa pratensis J. P. Smith, Steve Selva 1970-6-30 4104 Humboldt Comment
  SEINET13390783 Image available Poa pratensis A. G. Vestal 1937-6-22 s.n. Humboldt Comment
  UC33745  Poa pratensis subsp. pratensis Joseph Burtt Davy 1899-7-30 6178 Humboldt Ferndale Comment
  HSC102087  Poa secunda subsp. secunda M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 990 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  HSC98669  Poa secunda subsp. secunda Cara Witte 2008-7-2 813 Humboldt Board Camp Mountain. Road to Tri Board Camp. Forest Service Road 4N38. 1574 Comment
  UC184105  Poa secunda subsp. secunda Joseph P. Tracy 1912-7-31 3916 Humboldt near summit Buck Mt; Northern Coast Ranges 1676 Comment
  HSC10805  Poa trivialis William J. Ferlatte 1963-5-6 35 Humboldt Arcata, near 11th and B Sts. Comment
  CDA36977  Polycarpon tetraphyllum R. Robison Humboldt Humboldt Lagoons State Park, south of Stone Lagoon day use parking area. 0 Comment
  HSC94145  Polycarpon tetraphyllum Gordon Leppig 2000-12-6 1522 Humboldt 13th and A St. in Arcata 49 Comment
  UCR37859  Polycarpon tetraphyllum K. Berg 1984-5-6 567 Humboldt Stone Lagoon Spit. Comment
  SEINET3405098 Image available Polygonum bolanderi Joseph P. Tracy 1921-8-21 5944 Humboldt Trinity River Valley, Near Willow Creek 152 Comment
  UC672969  Polygonum davisiae Joseph P. Tracy Jul 16 1930-Jul 19 1930 9057 Humboldt along summit near Blake lookout; Northern Coast Ranges, South Fork Mountain 1706 Comment
  JEPS51269  Polygonum douglasii Chesnut and Drew 1888-7-28 Humboldt Grouse Creek Comment
  UC1713699  Polygonum douglasii subsp. douglasii Joseph P. Tracy 1919-9-18 5237 Humboldt Trinity Summit Northern Coast Ranges 1828 Comment
  UC1116241  Polygonum douglasii subsp. spergulariiforme Joseph P. Tracy 1947-7-5 17772 Humboldt ridge top 1 mi w Mud Springs; Trinity Summit 1158 Comment
  HSC55101  Polygonum minimum G. L. Clifton 1979-7-31 11832 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  RSA178533  Polygonum minimum Joseph P. Tracy 1950-8-8 19281 Humboldt On trail betw Box Camp and Croghon Hole. 1677 Comment
  BLMAR720  Polygonum paronychia Jennifer Wheeler 2011-5-20 720 Humboldt King range, Below Strawberry Rock along Mattole dunes 7 Comment
  CAS-BOT-BC109178  Polygonum paronychia Doris K. Kildale 1926-6-18 2398 Humboldt Gold Bluffs. Comment
  HSC103974  Polygonum paronychia C. Reynolds 2015-3-16 19 Humboldt Along Freshwater Beach, due south of the Kuchel Visitor Center 1 Comment
  RSA332472  Polygonum paronychia J. P. Smith 1971-10-6 4957 Humboldt Dunes at the end of Murray road in McKinleyville Comment
Read comments
Feb 21 2012
  UC672980  Polygonum phytolaccifolium Joseph P. Tracy 1933-7-25 12840 Humboldt Grouse Mountain; near springs 1524 Comment
  CAS-BOT-BC421003  Polygonum spergulariiforme Doris K. Kildale 1927-7-17 3757 Humboldt Bug Creek 792 Comment
  SEINET200792 Image available Polypodium californicum Joseph P. Tracy 1932-3-20 9784 Humboldt Trinidad 61 Comment
  HSC1101  Polypodium californicum Paul Shields Apr 1955 Humboldt 5 mi. N of Arcata Comment
  HSC1107  Polypodium californicum C. O. Baker 1962-3-22 4 Humboldt 2 mi. S of Trinidad along old Hwy. 101 122 Comment
  UC275412  Polypodium glycyrrhiza Joseph P. Tracy 1925-11-25 7326 Humboldt near the S Fork Trinity River Valley; Northern Coast Ranges 182 Comment
  UC667948  Polypodium glycyrrhiza Joseph P. Tracy 1936-4-26 14804 Humboldt Kneeland Prairie 762 Comment
  CHSC94935  Polypodium scouleri K. Lang; J. Lang 2005-3-17 31 Humboldt Fern Canyon, near Orick. 15 Comment
  POM188096  Polypodium scouleri Marcus E. Jones 1931-7-12 29178 Humboldt Alton. Comment
  HSC26462  Polypodium scouleri T. O. Osborne 1970-4-8 16 Humboldt Sugarloaf Rock, Cape Mendocino 61 Comment
  CAS-BOT-BC233071  Polypogon interruptus Joseph P. Tracy 1927-7-16 8261 Humboldt Eureka 60 Comment
  CAS-BOT-BC233214  Polypogon maritimus Joseph P. Tracy 1934-7-9 13351 Humboldt Dobbyn Creek 152 Comment
  HSC38498  Polypogon monspeliensis R. Sutherland 1976-11-9 1 Humboldt Redwood Creek, Wittemore Grove. 82 Comment
  HSC79387  Polypogon monspeliensis Kenneth Clark 1979-7-1 459 Humboldt Shelter Cove. One beach at base of cliffs; first reef of Point Delgada headlands. 5 Comment
  HSC49919  Polystichum munitum Maralyn O'Meara 1973-2-9 122 Humboldt McKinleyville, N side of Mad River along N Bank Rd., 0.5 mi. E of Hwy. 101 Comment
  HSC41354  Polystichum munitum Brad Klipfel 1974-8-2 508 Humboldt Horse Mtn., along Horse Mtn. Creek Comment
  HSC79145  Polystichum munitum C. J. Thomas 1984-9-25 120 Humboldt In Redwood forest immediately behind HSU fieldhouse 79 Comment
  UC249849  Polystichum munitum Joseph P. Tracy 1924-8-24 6828 Humboldt E Fork Willow Creek; Northern Coast Ranges 457 Comment
  UCD136553  Polystichum munitum K. Esau 1934-5-8 s.n. Humboldt Near Fort Seward. 457 Comment
  UC1225789  Populus trichocarpa Joseph P. Tracy 1948-4-11 17970 Humboldt 2 mi e Dyerville (Eel River); Eel River 48 Comment
  UC1099821  Potamogeton pectinatus Malcolm A. Nobs, S. Galen Smith 1949-8-3 1162 a Humboldt 1 mi s of Fields Landing; Eel River Valley Comment
  UCSB25141  Potentilla anserina subsp. pacifica Keefe, Joseph 1967-7-8 Humboldt South edge of Big Lagoon, 20 miles north of Eureka. 1 Comment
  HSC82396  Potentilla drummondii Thomas W. Nelson 1979-7-11 5010 Humboldt N Trinity Mtn. and ridge to E. 1829 Comment
  UC1586954  Potentilla drummondii Juha Pykala and D. H. Norris 1987-6-11 1593 Humboldt s North Trinity Mountain (w of Crogan Hole); North Trinity Mountain Wilderness Area 1550 Comment
  UC1541679  Potentilla gracilis var. gracilis H. E. Parks June, 1924 Humboldt Kneeland; Bald Hills, Kneeland Comment
  HSC15477  Prosartes smithii H. E. Parks 1935-3 5582 Humboldt Trinidad Comment
  CDA5736  Prunella vulgaris T. C. Fuller 1958-6-17 596 -58 Humboldt Wildcat Ridge near Bunker Hill. 0 Comment
  HSC14303  Prunella vulgaris subsp. lanceolata William J. Ferlatte, B. D. Rodgers 1966-6-7 2083 Humboldt 1 mi. E of Forest Glen 732 Comment
  SD93030  Prunella vulgaris var. lanceolata W. Bertsch 1953-7-30 226 Humboldt Highway 101 near Dyerville. 60 Comment
  UCLA85882  Prunella vulgaris var. lanceolata O. H. Kappler 1946-7-24 1371 Humboldt s of Humboldt Bay Loleta; s of Humboldt Bay Comment
  CAS-BOT-BC159982  Prunus emarginata Doris K. Kildale 1926-9-5 2620 Humboldt Lasseck's Peaks - on trail to Red Peak 1661 Comment
  POM160879  Prunus emarginata Joseph P. Tracy 1923-4-15 6195 Humboldt Hungry Hollow on Bald Mt. Comment
  UC1198777  Prunus emarginata Joseph P. Tracy 1924-9-7 6860 Humboldt near Fortuna (Northern Coast Ranges); Northern Coast Ranges 60 Comment
  UC205472  Prunus emarginata Joseph P. Tracy 1919-9-24 5296 Humboldt Trinity Summit; Northern Coast Ranges, Trinity Summit 1828 Comment
  CDA3914  Prunus laurocerasus Gordon Leppig 2000-4-12 1291 Humboldt Behind Humboldt University, west of Fern Lake, Arcata. Comment
  CAS-BOT-BC356655  Pseudognaphalium californicum Joseph P. Tracy 1937-7-11 15415 Humboldt Vicinity of Garberville 121 Comment
  UC604671  Pseudognaphalium californicum Joseph P. Tracy 1938-6-20 15971 Humboldt Willow Creek Trinity River Valley, Willow Creek 152 Comment
  HSC37667  Pseudognaphalium microcephalum R. Sutherland 1976-8-19 12 .19876 Humboldt Edge of county road 259 Comment
  CHSC19503  Pseudotsuga menziesii var. menziesii Wendell Wood 1970-9-22 295 Humboldt McKinleyville. East end of Chateau Way. 106 Comment
  UC165834  Psilocarphus tenellus J. P. Tracy 1909-5-23 2971 Humboldt immediate vicinity Eureka 0 Comment
  RSA167319  Psilocarphus tenellus var. tenellus Joseph P. Tracy 1942-7-26 17293 Humboldt Valley of South Yager Creek, at an old millsite one mile north of Redwood House. 610 Comment
  HSC100526  Psoralea physodes Carl C. Marshall Jun 1887 485 Humboldt Jewett's. Comment
  BLMAR157  Pteridium aquilinum var. pubescens Donald Hazlett 1994-6-7 157 Humboldt King range, near horse Mt. Ridge rd 670 Comment
  HSC54542  Pteridium aquilinum var. pubescens Walter Overton, Butler 1979-7-23 9526 Humboldt Near Titlow Hill, close to the town of Willow Creek 1280 Comment
  HSC36260  Pteridium aquilinum var. pubescens John Rehling 1974-8-19 20 Humboldt Comment
  UC672932  Pterostegia drymarioides Joseph P. Tracy 1933-5-20 12226 Humboldt s point of cape; Cape Mendocino 3 Comment
  UC642278  Pteryxia terebinthina var. californica Joseph P. Tracy 1929-6-3 8600 Humboldt Trinity Rivery Valley, at Willow Creek 152 Comment
  CAS-BOT-BC460600  Pyrola aphylla Volney Rattan 1878-1-1 s.n. Humboldt Unspecified Comment
  HSC76594  Pyrola dentata Teresa Prendusi 1981-7-9 205 Humboldt Near Cedar Camp 1268 Comment
  JEPS58815  Pyrola dentata Joseph P. Tracy 1926-6-6 7564 Humboldt Hoopa Mountain. On road West from Hoopa Valley, Northern Coast Ranges 914 Comment
  CAS-BOT-BC62673  Quercus chrysolepis Doris K. Kildale 1926-3-21 1689 Humboldt McDowell Butte, Kneeland Prairie 914 Comment
  HSC37825  Quercus chrysolepis Thomas W. Nelson, Jane P. Nelson 1976-2-21 2251 Humboldt Tish-Tang campground Comment
  HSC74269  Quercus garryana M. A. Baker 1980-5-23 1371 Humboldt Near Buck Mtn. 1524 Comment
  HSC98850  Quercus garryana var. garryana Cara Witte 2008-9-13 1037 Humboldt Forest Service Road 4N06. 1/4 mile east of intersection with National Forest 1. Cow Creek Ridge. 1283 Comment
  CAS-BOT-BC105162  Quercus kelloggii Doris K. Kildale 1927-4-16 3023 Humboldt Between Island Mountain and Fort Seward Comment
  HSC99009  Quercus kelloggii Cara Witte 2008-7-1 785 Humboldt Near Grouse Mountain. Along Forest Service Road 4N32. Approximately .5 mile south of intersection with 5N04 and 4N32E. 1406 Comment
  UC672858  Quercus kelloggii Joseph P. Tracy 1940-9-15 16723 Humboldt Willow Creek Trinity River Valley 152 Comment
  UCD46702  Quercus kelloggii W. L. Jepson 1903-6-9 2203 Humboldt Harris Ridge. 1127 Comment
  HSC41330  Quercus vacciniifolia Brad Klipfel 1974-9-17 573 Humboldt Horse Mtn. Comment
  OBI36118  Quercus vacciniifolia David J. Keil 1983-7-2 17324 Humboldt Ca. 4 mi SE of SR 299 along Titlow Hill rd below Horse Mountain Summit rd Comment
  UC1135804  Quercus vacciniifolia A. E. Wieslander 1931-5-19 204 Humboldt near Orleans; Klamath Forest, Hoopa Quad. Comment
  UC303003  Quercus vacciniifolia Joseph P. Tracy 1926-5-30 7522 Humboldt Willow Creek Canyon Northern Coast Ranges 609 Comment
  HSC34119  Ranunculus alismifolius var. hartwegii J. O. Sawyer 1971-6-16 2386 Humboldt Headwaters of Tish Tang a Tang Creek 1829 Comment
  UC162340  Ranunculus aquatilis var. capillaceus Joseph P. Tracy 1911-7-10 3486 Humboldt near mouth of Willow Creek; Northern Coast Ranges, valley of Trinity River 152 Comment
  UC1103004  Ranunculus aquatilis var. hispidulus Joseph P. Tracy 1939-5-14 16293 Humboldt near Dinsmore's (pond along river); Van Duzen River 746 Comment
  UC13972 Image available Ranunculus aquatilis var. hispidulus Chesnut and Drew 1888-7-11 Humboldt Jarrigan's Comment
  HSC18135  Ranunculus californicus var. cuneatus A. H. Teshima 1963-2-15 2 Humboldt Moonstone Beach Comment
  UC1103012  Ranunculus flammula Joseph P. Tracy 1936-6-28 15023 Humboldt Lake Prairie Bald Mountain 1066 Comment
  UC668066  Ranunculus flammula Joseph P. Tracy 1937-5-30 15312 Humboldt shallow pool near Bosworth's; Larrabee Creek 365 Comment
  HSC28201  Ranunculus hebecarpus Thomas W. Nelson 1971-5-7 429 Humboldt Beside Hwy. 101 1.0 mi. S of Arcata Comment
  HSC70255  Ranunculus occidentalis M. A. Baker 1980-6-8 1922 Humboldt Near Buck Flat. 1554 Comment
  UC1196223  Ranunculus occidentalis Joseph P. Tracy 1918-5-28 4948 Humboldt Bald Mountain Northern Coast Ranges (High Prairie) 1066 Comment
  UC1196235  Ranunculus occidentalis Joseph P. Tracy 1902-6-3 1671 Humboldt ridge between Harris and Fruitland; Northern Coast Ranges 762 Comment
  HSC18171  Ranunculus occidentalis var. occidentalis Elrid H. Spinas 1948-5-15 11 Humboldt Horse Mtn. Comment
  HSC48638  Ranunculus occidentalis var. occidentalis Mark Flippo 1978-5-20 78 Humboldt USFS Rd. 8N10 Comment
  UC1196243  Ranunculus orthorhynchus var. orthorhynchus J. P. Tracy Jun 19 1898-May 26 1899 230 Humboldt Ricks Prairie Immediate vicinity of Eureka (edge of pond) 0 Comment
  POM87678  Ranunculus repens L. R. Abrams, Rimo Bacigalupi 1922-6-25 8276 Humboldt Big Lagoon S of Quick Comment
  UCR275102  Ranunculus repens Charity A. Hartshorn 2016-4-24 12 Humboldt Arcata Marsh & Wildlife Sanctuary, east end of Klopp Lake 7 Comment
  HSC18111  Ranunculus repens var. repens S. J. Roberts 1965-4-8 9 Humboldt 2 mi. E of Mad River Park Comment
  HSC18176  Ranunculus repens var. repens Francis Winter 1960-4-19 Humboldt Samoa Peninsula, 4.5 mi. W of Arcata Comment
  JEPS81053  Ranunculus sardous Thomas Nelson and Doris Niles 1979-5-19 4696 Humboldt Crab Park Ferndale Quad., Eel River (tidal marsh mouth of river, n of County Park) Comment
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Sep 9 2008
  HSC56103  Ranunculus uncinatus G. L. Clifton 1979-7-31 11830 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  JEPS42054  Rhamnus californica Lincoln Constance 1934-6-13 872 Humboldt just below Redwood Hwy. (e bank of South Fork Eel River, n Dyerville Flat); South Fork Eel River, Bull Creek Region, Dyerville Flat 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
  UC870781  Rhamnus californica S. K. Harris and J. P. Tracy 1936-6-10 3254 Humboldt Tracy's Ranch Willow Creek Comment
  RSA7735  Rhamnus californica subsp. occidentalis Carl B. Wolf 1927-8-28 1172 Humboldt On grade 9 miles from Willow Creek, Lord Ellis Road to Blue Lake Comment
  CAS-BOT-BC55966  Rhamnus ilicifolia L. R. Abrams 1927-9-11 12141 Humboldt Fork Klamath and Shasta Rivers Comment
  RSA2933  Rhamnus purshiana Carl B. Wolf 1931-8-30 2373 Humboldt E side of Eureka on P st, on block N of Henderson Street. 30 Comment
  UC902199  Rhamnus purshiana Joseph P. Tracy 1948-8-22 18101 Humboldt 5 mi e Carlotta (flat by old Strong's District School House) 60 Comment
  UC1121090  Rhododendron macrophyllum A. E. Wieslander 1931-5-17 195 Humboldt Orick-Orleans Road Comment
  UC32620  Rhododendron macrophyllum Chesnut and Drew 1888-7-8 Humboldt near Arcata Comment
  CDA21386  Rhododendron occidentale var. paludosum G. F. Hrusa, T. D. Wilfred, N. Kang 1992-5-4 9401 Humboldt North Coast Ranges; Stagecoach Hill on Kane Rd. above and immed. NW of Big Lagoon and SE of Stone Lagoon. 158 Comment
  CAS-BOT-BC433132  Ribes Doris K. Kildale 1927-4-17 3076 Humboldt Bug Creek 792 Comment
  HSC56034  Ribes binominatum G. L. Clifton, Griswold 1979-7-31 11591 Humboldt Near Trinity Summit Guard Station, close to Hoopa 1884 Comment
  HSC97159  Ribes binominatum Yun Chan, Renee Meyer, Sophary Yun 2007-6-11 8 Humboldt 12.5 mi. S of Hwy. 299 on USFS Rd. NF1 1555 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
  HSC102560  Ribes lacustre M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-29 1547 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1579 Comment
  HSC75414  Ribes lacustre J. O. Sawyer, M. A. Ericksen 1980-7-18 3646 Humboldt Along FS Rd. 10N02, S of Middle Fork of Mill Creek Comment
  UC667070  Ribes lacustre Joseph P. Tracy 1933-7-16 12784 Humboldt near McKay Camp; South Fork Mountain 1676 Comment
  HSC13253  Ribes laxiflorum D. E. Anderson 1962-4-1 1969 Humboldt Intersection of Clam Beach Rd. and Dows Prairie Rd. Comment
  HSC97283  Ribes laxiflorum M. Mesler 2007-3-23 745 Humboldt Near Trinidad, trail from Mill Creek to Elk Head. 61 Comment
  UC11582  Ribes laxiflorum Harley P. Chandler May, 1901 1202 Humboldt Humboldt Bay North Coast Ranges 30 Comment
  CAS-BOT-BC212479  Ribes marshallii Joseph P. Tracy 1932-7-15 10592 Humboldt Ridges east of Corral Prairie, Trinity Summit, Klamath Mountains 1828 Comment
  HSC97215  Ribes marshallii M. Mesler 2007-6-25 765 Humboldt Trail to Mill Creek Lakes 1585 Comment
  HSC12619  Ribes menziesii Wendell Wood 1970-9-22 304 Humboldt McKinleyville, E end of Chateau Way 107 Comment
  HSC34814  Ribes menziesii Pamela Bruce 1975-4-8 1 Humboldt 0.5 mi. N of School Rd. on Washington Ave. Comment
  UC583437  Ribes menziesii Elmer I. Applegate 1931-3-28 6625 Humboldt Trinidad, type locality Trinidad Comment
  HSC20310  Ribes menziesii F. S. Griffith 1965-3-20 104 Humboldt 1.0 mi. E of Hwy. 101 along Mad River Rd. Comment
  UC1127532  Ribes roezlii H. S. Yates 1936-6-24 5880 Humboldt 2 mi e Bear Butte; Briceland Quadrangle Comment
  UC1193213  Ribes roezlii K. Cuff 1950-10-11 129 Humboldt 7 mi n Honeydew; Quad. 28A4 1005 Comment
  RSA0024750  Ribes roezlii J. R. Bruff 1937-8-17 937 Humboldt Richardson Grove, bed of Eel River. Comment
  HSC98865  Ribes roezlii var. cruentum Cara Witte 2008-7-30 970 Humboldt Forest Service Road 4N32. 1/2 mile north of intersection with Forest Service Road 4N32B. 1417 Comment
  UC1198939  Ribes roezlii var. cruentum Joseph P. Tracy 1935-3-8 13729 Humboldt Willow Creek Trinity River Valley 152 Comment
  CAS-BOT-BC212520  Ribes sanguineum Joseph P. Tracy 1949-4-10 18281 Humboldt Redwood Creek at Berry's 365 Comment
  CHSC19492  Ribes sanguineum B. D. Rogers 1965-4-1 411 Humboldt About 4 miles southeast of Arcata, along Jacoby Creek. Comment
  HSC20348  Ribes sanguineum C. O. Baker 1962-3-22 12 Humboldt 2 mi. S of Trinidad along old Hwy. 101 122 Comment
  HSC76265  Ribes sanguineum Teresa Prendusi 1981-7-24 511 Humboldt Near Whiteys Peak 1634 Comment
  SBBG115193  Ribes sanguineum D. Leaberry 1992-6-20 Humboldt Clam Beach County Park, 1 mi N of Arcata Airport Comment
  UC709454 Image available Ribes sanguineum Joseph P. Tracy 1941-4-8 16852 Humboldt Trinity Highway Willow Creek Canyon 762 Comment
  UC921844  Ribes sanguineum var. glutinosum C. Epling, Wm. Robison 1935-7-22 Humboldt Patrick's Point Comment
  CAS-BOT-BC173988  Ribes viscosissimum Henry M. Pollard 1943-8-1 s.n. Humboldt Orleans Mt. 1828 Comment
  CAS-BOT-BC173990  Ribes viscosissimum J. H. Thomas 1949-6-13 913 Humboldt Along trail between Le Perron Flat and Whiteys Peak. Six Rivers National Forest. (East of town of Orleans) 1371 Comment
  HSC32267  Ribes viscosissimum J. O. Sawyer 1970-6-24 2276 Humboldt W of Mill Creek Lakes. 1677 Comment
  HSC58107  Ribes viscosissimum G. L. Clifton, Griswold 1979-8-1 12042 Humboldt Near N Trinity Mtn., close to the town of Hoopa 1799 Comment
  UC1222365  Romanzoffia californica Joseph P. Tracy 1950-6-15 18818 Humboldt at Huestis Rock on n.e. side Mail Ridge Comment
  UC660024  Romanzoffia tracyi Lincoln Constance, Alan A. Beetle with Joseph P. Tracy 1940-5-18 2619 Humboldt ocean bluffs n. of Trinidad 30 Comment
  CAS-BOT-BC74513  Rorippa curvisiliqua Joseph P. Tracy 1931-9-7 9667 Humboldt Trinity River Valley, at Willow Creek. 152 Comment
  HSC6899  Rorippa curvisiliqua D. E. Anderson 1961-9-30 1844 Humboldt Divide Lake Comment
  UC14402  Rorippa curvisiliqua Chesnut and Drew 1888-7-10 Humboldt Jarnigan's 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
  CAS-BOT-BC147436  Rosa californica L. R. Abrams 1918-6-16 7161 Humboldt Willow Creek Comment
  CAS-BOT-BC146526  Rosa gymnocarpa Roxana S. Ferris 1955-7-11 12971 Humboldt E of summit near Willow Creek, along U. S. Highway 299 Comment
  HSC74196  Rosa gymnocarpa M. A. Baker 1980-7-23 3167 Humboldt Near Orleans Mtn. 1859 Comment
  POM117575  Rosa gymnocarpa Marcus E. Jones 1924-4-26 s.n. Humboldt Scotia. Comment
  HSC98988  Rosa nutkana Cara Witte 2007-7-3 412 Humboldt Along National Forest 1. Approximately 1 mile south of White Oak Opening. 1364 Comment
  SEINET11910997  Rosa nutkana F. H. Utech 1986-1 86 -392 Humboldt ca 5 mi N on Kings Peak Road, from junction with Shelter Cove Road, near Tolkan Recreation Area 480 Comment
  UC1174842  Rosa nutkana var. nutkana P. C. Everett and E. K. Balls 1959-10-25 23973 Humboldt 11.6 mi sw from Ferndale (on Old Coast Rd to Capetown) 243 Comment
  UC1199022  Rosa nutkana var. nutkana J. P. Tracy 1901-6-23 1163 Humboldt immediate vicinity of Eureka 0 Comment
  UC1199026  Rosa nutkana var. nutkana Joseph P. Tracy 1927-7-4 8230 Humboldt Sibley Ranch Iaqua 609 Comment
  UC14149  Rosa nutkana var. nutkana E. Ethel Tracy 1901-9-5 1278 Humboldt Eureka Comment
  CAS-BOT-BC148348  Rosa pisocarpa Doris K. Kildale 1931-6-6 10858 Humboldt Gans Prairie, Orick-Whitepec Road Comment
  HSC60108  Rosa pisocarpa M. A. Baker 1978-5-2 451 Humboldt Elk Head Comment
  CAS-BOT-BC146879  Rosa rubiginosa C. B. Wolf 1931-8-28 2363 Humboldt 1/8 mile from Rohnerville on road to Fortuna 30 Comment
  CAS-BOT-BC146883  Rosa rubiginosa Doris K. Kildale 1927-6-26 3602 Humboldt Big Lagoon Comment
  CAS-BOT-BC148221  Rosa spithamea Doris K. Kildale 1930-5-24 9549 Humboldt Trinity River at Hoopa 121 Comment
  CAS-BOT-BC147155  Rubus laciniatus Henry M. Pollard 1948-8-7 s.n. Humboldt Near Orleans Comment
  CAS-BOT-BC148384  Rubus leucodermis Doris K. Kildale 1927-7-3 3662 Humboldt Willow Creek Flat 152 Comment
  HSC19651  Rubus leucodermis Lincoln Constance 1934-5-24 655 Humboldt S Fork Eel River, bordering lower Look Prairie on E. side 122 Comment
  HSC99589  Rubus leucodermis K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-22 258 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
  HSC19656  Rubus parviflorus Lincoln Constance 1934-5-31 756 Humboldt S Fork of the Eel River, Bull Creek Flat, along Bull Creek, W boundary of park to Grasshopper Peak, N side of creek Comment
  RSA523867  Rubus parviflorus G. H. True 1936-5-12 473 Humboldt 5 miles S of Kneeland. 457 Comment
  UCR32042  Rubus parviflorus David J. Keil 1983-7-1 17292 Humboldt Between Ferndale & Bear River Ridge Road along Mattole Road Comment
  HSC22039  Rubus spectabilis B. D. Rogers, D. E. Anderson 1965-4-1 412 Humboldt 4 mi. SE of Arcata along Jacoby Creek Comment
  HSC37377  Rubus spectabilis Gary S. Lester, Roger L. Yearout, Judith G. Dickson 1974-7-24 503 Humboldt Along Lost Man Creek. 38 Comment
  HSC47500  Rubus spectabilis Sheila Logan 1978-4-10 26 Humboldt McKinleyville, foot of Hiller Rd at Ocean Rd., near Pacific ocean and Mad River 46 Comment
  UC1199046  Rubus spectabilis Joseph P. Tracy 1931-4-12 9333 Humboldt near Blue Lake (Mad River (at Essex)); Northern Coast Region, Mad River 15 Comment
  UC584131  Rubus spectabilis David D. Keck and J. Clausen 1935-6-16 3394 Humboldt mouth of Little River Comment
  RSA20972  Rubus spectabilis Carl B. Wolf 1937-6-15 8828 Humboldt Redwood Hwy. 1.2 mile S of Russ Grove. 61 Comment
  HSC32238  Rubus ursinus J. O. Sawyer 1970-6-24 2256 Humboldt S of Mill Creek Gap, FS Rd. 10N02 1433 Comment
  HSC34808  Rubus ursinus David Peters 1975-4-9 5 Humboldt .1 mi. E of Kirkpatrick Quarry Rd. on Jacoby Cr. Rd. Comment
  UC666164  Rubus ursinus S. W. Brown 1942-6-13 42011 Humboldt 10.1 mi n Fortuna (on U.S. Hwy 99); ; Fortuna, Humboldt Co. Comment
  UCD17622  Rubus ursinus H. Olmo; T. S. Mallah 1946-6-26 46- 042 Humboldt California. Humboldt County: 6.3 miles east of Ettersburg on road from Briceland. Comment
  UCD17624  Rubus ursinus H. Olmo; T. S. Mallah 1946-6-26 46- 040 Humboldt California. Humboldt County: on left side of U.S. 101 going north, about 0.5 miles north of Rock Creek Crossing. Comment
  UCD17837  Rubus ursinus H. Olmo 8-10 May 1962 62- 39 Humboldt California. Humboldt County: 0.5 miles west of Dinsmore. Comment
  HSC58183  Rudbeckia klamathensis G. L. Clifton, Griswold 1979-8-2 12271 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  SEINET5710904  Rudbeckia occidentalis Lowell E. Urbatsch, Patricia B. Cox; Alan W. Lievens 1988-1 6104 Humboldt From California 299 at Hawkins Bar (In Trinity County), turn onto the road to Denny and travel 1.7 miles down this road toa fork in the road. Take the lefthand road (leading to Waterman Ridge, Zeigler Point) and travel 6.7 miles down this road to antoher fork in the road. Take the right fork (away from thr road leading to Waterman Ridge and Willow Creek). On the road (7NO4), travel 1.5 miles to another fork; continue on 7NO4 (the left fork) for 7.4 miles. At this point, take 7 NO4N, the road to Groves Prairie. The collection site is a short distance up the road.; Groves Prairie Comment
  HSC64433  Rumex acetosella J. P. Smith 1971-10-6 4943 Humboldt End of Murray Rd. in McKinleyville. Comment
  HSC71747  Rumex acetosella M. A. Baker 1980-6-26 2449 Humboldt Near Sims Creek 610 Comment
  HSC89469  Rumex acetosella P. A. Daly 1986-3-12 99 Humboldt Trinidad Head, along trail 61 Comment
  JEPS39876  Rumex crispus Lincoln Constance 1934-5-26 659 Humboldt near Founder's Tree (North Dyerville Flat grove); South Fork Eel River, Bull Creek Region, North Dyerville Fla 48 Comment
  UC162326  Rumex crispus Joseph P. Tracy 1911-7-7 3375 Humboldt 3 mi nw Willow Creek and Trinity River junction (near Beebe's Ranch); Northern Coast Ranges 914 Comment
  UC672927  Rumex occidentalis Joseph P. Tracy 1936-6-3 14854 Humboldt near Lack Pond; Trinity River Valley, Willow Creek 152 Comment
  UC1541397  Rumex salicifolius var. salicifolius Harold E. Parks 1934-8 5166 Humboldt Big Lagoon Comment
  CAS-BOT-BC454099  Ruppia cirrhosa Malcom A. Nobs; S. Galen Smith 1949-8-3 1182 Humboldt Near mouth of the Elk River on Highway 101, ca. 4 miles south of Eureka Comment
  UC296201  Ruppia maritima H. E. Parks 1757 Humboldt Little River Lagoon Comment
  UC1103258  Rytidosperma penicillatum Joseph P. Tracy 1949-8-11 18451 Humboldt on the Bald Mt. road near Angels Ranch; Hungry Hollow 762 Comment
  UC1116232  Sagina apetala Joseph P. Tracy 1948-4-11 17965 Humboldt 2 mi. e. Dyerville (Eel R.); Eel R. 48 Comment
  HSC32142  Sagina saginoides D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5609 Humboldt Mt. Lassic and two smaller peaks to immediate E 1768 Comment
  CAS-BOT-BC132707  Salix A. T. Whittemore 1979-4-5 79 -013 Humboldt Arcata, along Alliance Road immediately north of Arcata High School 6 Comment
  CAS-BOT-BC129899  Salix bonplandiana Joseph P. Tracy 1935-6-22 13960 Humboldt Mouth of Larrabee Creek, on Eel River 45 Comment
  UC1196669  Salix eastwoodiae Joseph P. Tracy 1935-7-26 14266 Humboldt meadows at Water Dog Lake; Trinity Summit 1828 Comment
  CAS-BOT-BC104094  Salix hindsiana Harold E. Parks; Joseph P. Tracy 1931-5-17 0969 Humboldt Mouth of Willow Creek at Trinity River 150 Comment
  CAS-BOT-BC104112  Salix hindsiana Carleton R. Ball; Harold E. Parks; Joseph P. Tracy 1932-5-17 01336 Humboldt above Trinity River, 1 mile below bridge on Trinity Highway 152 Comment
  CAS-BOT-BC106853  Salix hookeriana Jim Davis 1933-4-25 8 Humboldt Samoa Comment
  CAS-BOT-BC106855  Salix hookeriana Carleton R. Ball; Harold E. Parks; Joseph P. Tracy 1932-5-11 01222 Humboldt 1 mile north of Samoa Comment
  CAS-BOT-BC106863  Salix hookeriana W. J. Ferlatte 1967-6-13 1121 Humboldt Moonstone coastal bluff 30 Comment
  CAS-BOT-BC107679  Salix hookeriana Doris K. Kildale 1926-7-18 2389 Humboldt Near mouth of Redwood Creek 15 Comment
  CAS-BOT-BC107704  Salix hookeriana Harold E. Parks 1931-3-26 905 Humboldt Alton, on Van Duzen River 15 Comment
  CAS-BOT-BC107712  Salix hookeriana Doris K. Kildale 1926-3-20 1556 Humboldt Big Lagoon Comment
  CAS-BOT-BC107723  Salix hookeriana Alice Eastwood 1923-8-17 12320 Humboldt Samoa Comment
  CAS-BOT-BC107725  Salix hookeriana C. V. Piper 1921-5-22 s.n. Humboldt Eureka Comment
  CAS-BOT-BC107736  Salix hookeriana Harold E. Parks 1931-5-28 1000 Humboldt Little River Lagoon Comment
  CHSC31280  Salix hookeriana Mark Stopher 1980-3-26 42 Humboldt Adjoining Hwy 101 right of way near Elk River. Comment
  HSC40380  Salix hookeriana Linda M. Barker 1976-3-22 1341 Humboldt Lanphere-Christensen Dunes, 3 mi. W of Arcata. Comment
  JEPS38443  Salix hookeriana J. P. Tracy 1906-4-12 2401 Humboldt Immediate vicinity of Eureka 0 Comment
  POM184871  Salix hookeriana H. E. Parks, Susan T. Parks 1932-4-10 1103 -a Humboldt Little River Lagoon. Trinidad. At sea level. 0 Comment
  POM219354  Salix hookeriana Joseph P. Tracy 1931-4-4 9330 Humboldt Near Samoa. On Humboldt Bay. 6 Comment
  SD936  Salix hookeriana Harold E. Parks 1931-3-24 914 Humboldt Fortuna, on banks of Eel River 10 Comment
  UC1196632  Salix hookeriana J. P. Tracy 1901-3-31 996 Humboldt Immediate vicinity of Eureka 0 Comment
  UC1356324  Salix hookeriana Theodore J. Crovello 1965-4-8 676 Humboldt along Somoa Rd about 200 ft n Samoa Club Comment
  UC146207  Salix hookeriana J. P. Tracy 1905-4 2392 /2168 Humboldt Immediate vicinity of Eureka 0 Comment
  UC469115  Salix hookeriana Joseph P. Tracy 1931-8-23 9622 Humboldt sand dunes near Samoa; Northern Coast Region, Humboldt Bay 6 Comment
  UC469119  Salix hookeriana Joseph P. Tracy 1927-4-23 7921 Humboldt Big Lagoon Northern Coast Ranges 6 Comment
  UC470423  Salix hookeriana Joseph P. Tracy 1931-9-19 9680 Humboldt near Alton; Northern Coast Ranges, Van Duzen River 30 Comment
  UC470442  Salix hookeriana Joseph P. Tracy 1931-9-27 9692 Humboldt Alton to Fortuna (on gravel bars); Northern Coast Region, Eel River 15 Comment
  UC481333  Salix hookeriana Harold E. Parks 1931-5-27 998 Humboldt Bishop Pine Lodge Trinidad 76 Comment
  UC481347  Salix hookeriana Harold E. Parks 1931-5-12 953 Humboldt Samoa Humboldt Bay Comment
  UC490456  Salix hookeriana Joseph P. Tracy 1932-5-10 9954 Humboldt Mattole R. near Petrolia; North Coast Region, Mattole R. 15 Comment
  UC512085  Salix hookeriana Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-11 1221 Humboldt 1 mi n Samoa (in pine barrens near the coast) Comment
  UC512094  Salix hookeriana Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-11 1215 Humboldt 1 mi n Samoa (pine barrens near coast) Comment
  UC519342  Salix hookeriana Joseph P. Tracy 1933-10-8 13087 Humboldt Blue Slide Northern Coast Ranges, Van Duzen River 91 Comment
  UCD111037  Salix hookeriana Linda M. Barker 1976-4-13 1383 Humboldt 3 miles west of Arcata. Comment
  RSA0034665  Salix hookeriana var. tomentosa Harold E. Parks 1931-5-12 0952 Humboldt Samoa, Humboldt Bay. 0 Comment
  UC469475  Salix laevigata Joseph P. Tracy 1931-10-18 9737 Humboldt on Eel R. Camp Grant; Northern Coast Ranges, Eel R., Camp Grant 60 Comment
  UC517961  Salix laevigata M. S. Jussel 1931-5-1 Humboldt Sylvandale Comment
  CAS-BOT-BC128194  Salix lasiandra var. lasiandra Joseph P. Tracy 1933-7-16 12772 Humboldt South Fork Mountain, in wet meadow at McKay Camp 1676 Comment
  JEPS12978  Salix lasiandra var. lasiandra Joseph P. Tracy 1932-4-17 9797 Humboldt Alton to Fortuna (Eel River); Northern Coast Region, Eel river 15 Comment
  JEPS14790  Salix lasiandra var. lasiandra Joseph P. Tracy 1933-7-16 12772 Humboldt at McKay Camp S. Fork Mt.; Northern Coast Ranges 1676 Comment
  SD1004  Salix lasiandra var. lasiandra Harold E. Parks, Joseph P. Tracy 1931-5-17 966 Humboldt Mouth of Willow Creek at Trinity River 149 Comment
  JEPS12945  Salix lasiolepis Joseph P. Tracy 1929-10-20 8681 Humboldt Larrabee Valley Northern Coast Ranges, Larrabee Valley 762 Comment
  JEPS14776  Salix lasiolepis Joseph P. Tracy 1933-3-19 10931 Humboldt on Van Duzen River Blue Slide; Northern Coast Ranges 91 Comment
  POM160285  Salix lasiolepis Joseph P. Tracy 1926-2-28 7373 Humboldt Trinity River Valley, near the S Fork. 183 Comment
  UC1196619  Salix lasiolepis Joseph P. Tracy 1933-7-20 12807 Humboldt Mad River, near Blue Lake 15 Comment
  UC1196621  Salix lasiolepis Joseph P. Tracy 1926-9-19 7802 Humboldt Valley of S. Yager Creek Northern Coast Ranges, Valley of S. Yager Creek 762 Comment
  UC1196624  Salix lasiolepis Joseph P. Tracy 1933-4-2 10962 Humboldt on Trinity Hwy e Redwood Creek; Northern Coast Ranges, Berry's Mt. 762 Comment
  UC469415  Salix lasiolepis Joseph P. Tracy 1927-5-13 7996 Humboldt Redwood Creek, at Berry's 274 Comment
  UC469419  Salix lasiolepis Joseph P. Tracy 1929-3-16 8530 Humboldt at Berry's Redwood Creek; Northern Coast Ranges, Redwood Creek 274 Comment
  UC506344  Salix lasiolepis Joseph P. Tracy 1933-3-19 10932 Humboldt Blue Slide, on Van Duzen River 228 Comment
  UC526717  Salix lasiolepis Joseph P. Tracy 1934-7-9 13356 Humboldt Dobbyn Creek Northern Coast Ranges, Dobbyn Creek 152 Comment
  CAS-BOT-BC107287  Salix lasiolepis var. bigelovii Joseph P. Tracy 1933-3-19 10934 Humboldt along Van Duzen R. 228 Comment
  POM220140  Salix lasiolepis var. bigelovii H. E. Parks, Joseph P. Tracy 1931-5-17 976 Humboldt Mouth of Willow Creek at Trinity River. 150 Comment
  CAS-BOT-BC107409  Salix lasiolepis var. lasiolepis Doris K. Kildale 1927-5-13 3144 Humboldt Redwood Creek at Berry's 289 Comment
  CAS-BOT-BC107416  Salix lasiolepis var. lasiolepis Doris K. Kildale 1926-9-17 2802 Humboldt [Dobbyns] Dobbyn Creek Comment
  POM220145  Salix lucida subsp. lasiandra H. E. Parks, Joseph P. Tracy 1931-5-17 966 Humboldt Mouth of Willow Creek at Trinity River. 150 Comment
  RSA34304  Salix lucida subsp. lasiandra Doris K. Kildale 1927-3-20 2926 Humboldt Stevens Grove. Comment
  CAS-BOT-BC125609  Salix melanopsis Joseph P. Tracy 1911-7-4 3295 Humboldt Along Willow Creek (Tributary of Trinity River) near its mouth 182 Comment
  CAS-BOT-BC125616  Salix melanopsis W. R. Dudley 1899-6-21 s.n. Humboldt At the junction of the North and South forks of Eel River Comment
  CAS-BOT-BC125632  Salix melanopsis Joseph P. Tracy 1931-9-7 9647 Humboldt Trinity River Valley, at Willow Creek 152 Comment
  HSC20037  Salix melanopsis J. P. Tracy, H. E. Parks 1931-3-26 909 Humboldt Van Duzen River Comment
  JEPS14755  Salix melanopsis Joseph P. Tracy, C. R. Ball, and H. E. Parks 1932-5-17 10095 Humboldt Trinity River near Willow Creek; North Coast Ranges 152 Comment
  JEPS14788  Salix melanopsis Joseph P. Tracy 1933-6-11 12552 Humboldt S. Fork Eel River near Miranda; Northern Coast Ranges 60 Comment
  UC1196568  Salix melanopsis Joseph P. Tracy 1932-5-1 9848 Humboldt along Van Duzen R. Alton; North Coast Ranges, Van Duzen R. 30 Comment
  UC481194  Salix melanopsis Harold E. Parks 1931-8-25 1060 Humboldt on Van Duzen R Blue Slide; Van Duzen R., Blue Slide 90 Comment
  UC481275  Salix melanopsis Harold E. Parks 1931-5-28 1027 Humboldt Little River Lagoon Comment
  UC481356  Salix melanopsis Harold E. Parks 1931-5-14 956 a Humboldt Van Duzen R. above Bridgeville; Van Duzen R. 300 Comment
  RSA0005850  Salix parksiana H. E. Parks 1931-5-14 962 Humboldt Van Duzen River between Alton and Carlotta. 15 Comment
  HSC38187  Salix scouleriana Thomas W. Nelson, James Nelson 1976-3-5 3293 Humboldt Beside Hwy. 101 near summit of Table Bluff Comment
  JEPS89298  Salix scouleriana Joseph P. Tracy 1937-3-21 15236 Humboldt Van Duzen R. near Grizzly Creek; Van Duzen R. 91 Comment
  LA208917  Salix scouleriana Harold E. Parks; 1931-5-12 951 Humboldt Bishop Pine Lodge; Trinidad 150.0 Comment
  UC1196706  Salix scouleriana Joseph P. Tracy 1933-12-24 13132 Humboldt Eureka Northern Coast Ranges, Eureka 0 Comment
  UC490530  Salix scouleriana Joseph P. Tracy 1932-7-13 10507 Humboldt open groung at Corral Prairie (back from the meadows); Klamath Mts., Trinity Summit, Corral Prairie 1524 Comment
  HSC102510  Salix sitchensis M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-28 1495 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1106 Comment
  HSC59689  Salix sitchensis Marla J. Carollo 1979-5-4 61 Humboldt Clam Beach Lagoon, near Little River Beach, adjacent to Hwy. 101 Comment
  HSC96588  Salix sitchensis Gordon Leppig 2003-2-22 1817 Humboldt Mad River Beach, near parking lot 3 Comment
  POM219568  Salix sitchensis H. E. Parks 1931-3-24 910 Humboldt Trinidad. 90 Comment
  UC481381  Salix sitchensis Harold E. Parks 1931-3-26 906 Humboldt on Van Duzen R. Alton; Van Duzen R., Alton 15 Comment
  UC481386  Salix sitchensis Harold E. Parks 1931-3-24 910 a Humboldt Trinidad 90 Comment
  UC492341  Salix sitchensis Harold E. and Susan T. Parks 1932-4-12 1111 Humboldt on Van Duzen R. Blue Slide; Van Duzen R., Blue Slide 90 Comment
  UC511968  Salix sitchensis Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-13 1256 Humboldt 2 mi. e. of Redwood Hwy. and above Blue Lake Rd. (floodplain of Mad R.); Mad R., Engelhart gravel pit Comment
  UC512013  Salix sitchensis Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-12 1230 Humboldt 1 1/2 mi. e. Alton (on ... floodplain of Van Duzen R.); Van Duzen R. 30 Comment
  UC526709  Salix sitchensis Joseph P. Tracy 1934-3-25 13168 Humboldt on Van Duzen R. Blue Slide; Northern Coast Ranges, Van Duzen R., Blue Slide 91 Comment
  CDA39588  Salix sitchensis Peter Haggard 1993-4-17 s.n. Humboldt Van Duzen River west of Bridgeville on Hwy 36. 0 Comment
  HSC20130  Salix tracyi H. E. Parks 1931-5-17 976 Humboldt Humboldt and Trinity Cos., Willow Creek 152 Comment
  HSC34273  Sambucus nigra subsp. caerulea K. Irwin 1975-8-13 Humboldt N Trinity Mtn. Comment
  SBBG25586  Sambucus nigra subsp. caerulea E. R. Blakley 1966-8-17 6796 Humboldt Little Crk, Prairie Crk St Park, ca. 10 mi N of Orick 60 Comment
  HSC59043  Sambucus racemosa var. racemosa Thomas Wood 1979-4-20 118 Humboldt W of Clam Beach adjacent to McKinleyville Rd. Jct. with Hwy. 101 6 Comment
  HSC21611  Sanicula arctopoides R. D. Modafferi 1965-3-13 16 Humboldt 1 mi. N of Trinidad on Trinity St. 305 Comment
  UC205466  Sanicula arctopoides Joseph P. Tracy 1919-4-27 5136 Humboldt Ocean Beach at Humboldt Bay Ocean Beach; Northern Coast Region, Humboldt Bay, Ocean Beach Comment
  HSC21635  Sanicula crassicaulis D. V. Sanford 1963-4-23 42 Humboldt Comment
  RSA254743  Sanicula crassicaulis Thomas W. Nelson, James Nelson 1973-5-28 943 Humboldt McKeown Ranch north of Dinsmore. Comment
  SEINET12119553  Sanicula crassicaulis J. P. Tracy 1950-1 19023 Humboldt Sproston's Place, 3 mi S of Burr Valley 1067 Comment
  UC1022533  Sanicula crassicaulis C. Ritchie Bell 1952-5-3 1326 Humboldt near Cobbs (along Mad River); Mad River Comment
  HSC68625  Sanicula tracyi Jacqueline Greenleaf 1980-7-16 239 Humboldt Near Buck Mtn. 1250 Comment
  UC647525  Sanicula tracyi Joseph P. Tracy 1939-5-14 16284 Humboldt Buck Mountain 914 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
  UC1124524  Satureja douglasii H. L. Person 1932-7-16 Humboldt highway n Trinidad; Rock Point Quad. Comment
  UC154268  Satureja douglasii P. E. Goddard 1901-7-12 80 Humboldt Hupa Valley Comment
  UC416708  Satureja douglasii P. E. Goddard 1906-6 684 Humboldt Blocksburg Comment
  UC183566  Saxifraga californica Joseph P. Tracy 1913-5-4 4063 Humboldt Kneeland Prairie; Northern Coast Ranges, Kneeland Prairie 762 Comment
  UC492224  Saxifraga californica Joseph P. Tracy 1927-4-10 7896 Humboldt near the South Fork (Trinity River Valley); Northern Coast Ranges, Trinity River Valley 182 Comment
  JEPS79978  Saxifraga marshallii Joseph P. Tracy 1941-3-26 16834 Humboldt Trinity River Valley, at Willow Creek Willow Creek; Trinity River Valley, Willow Creek 152 Comment
  UC642323  Scandix pecten-veneris Joseph P. Tracy 1935-5-25 13872 Humboldt Fort Seward 106 Comment
  CHSC84743  Schoenoplectus acutus var. occidentalis L. P. Janeway 2003-7-27 7926 Humboldt North Coast. Edge of marsh on south side of southwest end of Hwy 101 causeway across Big Lagoon. 2 Comment
  RSA246889  Schoenoplectus acutus var. occidentalis Robert F. Thorne, Percy C. Everett 1965-8-9 35283 Humboldt Big Lagoon. 3 Comment
  HSC36316  Schoenoplectus americanus Rich Barcelona 1973-11-19 191173 .4 Humboldt Big Lagoon Comment
  CAS-BOT-BC111696  Schoenoplectus pungens var. badius D. E. Breedlove 1962-6-7 3053 Humboldt On extensive sand dunes 1.5 mi S of Samoa on peninsula on W side of Humboldt Bay. Comment
  CAS-BOT-BC111702  Schoenoplectus pungens var. badius LeRoy Abrams; Rimo Bacigalupi 1922-6-25 8268 Humboldt Big Lagoon south of Orick Comment
  UC668012  Scirpus cernuus Joseph P. Tracy 1934-7-13 13386 Humboldt Trinidad 91 Comment
  SEINET4170940  Scirpus microcarpus Unknown 1914-9-13 4628 Humboldt At Eureka, Northern Coast Region 61 Comment
  UC668008  Scirpus microcarpus Joseph P. Tracy 1932-7-14 10561 Humboldt Corral Prairie Trinity Summit, Corral Prairie 1584 Comment
  CDA39145  Scirpus microcarpus Gordon Leppig 1998-6-26 861 Humboldt Arcata; Alder Grove Pond, south side of pond. Comment
  HSC41917  Scoliopus bigelovii Rich White 1977-4-23 16 Humboldt 2.5 mi. S of Shelter Cove Rd., S Fork on Bear Creek at Wailaki Campground 561 Comment
  HSC15640  Scoliopus bigelovii E. W. Styskel 1963-3-9 6 Humboldt 3 mi. SE of Korbel on Snow Camp Rd. 290 Comment
  POM292611  Scoliopus bigelovii Lyman Benson 1927-7-12 818 Humboldt Weott Ranger Station; Mt. Range: Seaward N Coast; River: South Fork Eel. 61 Comment
  UCD19970  Scoliopus bigelovii C. H. Lamoureux; R. Gankin 1956-3-17 1043 Humboldt South boundary of Jenson Cove, between Meyers and Miranda on Hwy 101. Comment
  CHSC109847  Scrophularia californica B. Castro; L. P. Janeway 2004-9-11 1476 Humboldt North Coast. Near blocked S end of Little River Road 0.25 mi N of Central Avenue; near S end of Clam Beach. 4 Comment
  SEINET12330006  Scrophularia californica F. H. Utech 1986-1 86 -407 Humboldt Cape Mendocino, along Pacific Ocean 6 Comment
  HSC100509  Scutellaria angustifolia Carl C. Marshall Jun 1885 90 Humboldt Mountain ridges. Comment
  HSC98088  Scutellaria antirrhinoides Cara Witte 2007-7-11 481 Humboldt Cold Spring. 1/2 mile south of Titlow Hill. 1391 Comment
  UC1239708  Scutellaria antirrhinoides Joseph P. Tracy 1935-6-23 13966 Humboldt French Camp Ridge 1066 Comment
  UC154008  Scutellaria antirrhinoides Joseph P. Tracy 1908-6 2914 Humboldt nw slope of Buck Mountain; Northern Coast Ranges, Buck Mountain 1219 Comment
  HSC79268  Sedum laxum subsp. flavidum D. K. Imper 1983-7-12 Humboldt Six Rivers National Forest, Blue Creek Mtn. Comment
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May 27 2013
  HSC76354  Sedum laxum subsp. heckneri Denis Kearns 1981-6-24 32 Humboldt Near Cedar Camp 1219 Comment
  HSC79346  Sedum laxum subsp. heckneri D. K. Imper 1983-6-17 Humboldt 1 mi. S of Cedar Camp (road to Mosquito Lake), on FS Rd. 12N12, also located along FS Rd. 12N12 4 mi. N 1159 Comment
  JEPS109415  Sedum laxum subsp. heckneri D. W. Taylor 2004-6-24 19137 Humboldt Clear Lake, along Titlow Hill road. Comment
  JEPS47745  Sedum laxum subsp. heckneri Wayne Roderick 1961-7-10 61 .989 Humboldt 6.6 mi n Orleans (Klamath River, 1.4 mi s of Siskiyou County line (Somesbar)); Klamath River, n of Orleans 152 Comment
  HSC98735  Sedum radiatum Cara Witte 2007-7-20 552 Humboldt Board Camp Butte. Forest Serivce Road 4E27. 1502 Comment
  CAS-BOT-BC63790  Sedum radiatum subsp. radiatum Doris Kildale Gillespie 1931-6-7 10602 Humboldt Soth Forb Mt. Blake Lookout. 1726 Comment
  SEINET12218775  Sedum spathulifolium J. P. Tracy 1950-1 18715 Humboldt Wildcat Road, 2 mi S of Ferndale 305 Comment
  HSC28237  Sedum spathulifolium var. pruinosum Clifton Raymond Chesbrough 1973-6-19 100 Humboldt 0.5 mi. N of College Cove along coast Comment
  HSC89507  Sedum spathulifolium var. pruinosum M. Roantree 1985-6-11 89 Humboldt W side of Trinidad Head, W of trail Comment
  HSC40631  Sedum spathulifolium var. spathulifolium M. A. Baker 1977-4-9 273 Humboldt 4 mi. N of Hoopah on Hwy. 96 91 Comment
  SBBG19224  Selaginella oregana L. L. Kiefer 1963-8-6 769 Humboldt Patrick's Pt St Park, N side of Lookout Rock 45 Comment
  HSC925  Selaginella oregana J. P. Tracy 1933-5-18 12196 Humboldt Mad River, near Blue Lake 15 Comment
  HSC48867  Senecio integerrimus Brad Klipfel 1973-6-10 62 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  CAS-BOT-BC364012  Senecio integerrimus var. major Henry M. Pollard 1948-7-31 s.n. Humboldt Orleans Mt. 1828 Comment
  UC581708  Senecio integerrimus var. major Joseph P. Tracy 1935-7-28 14326 Humboldt Head of Devils Hold Trinity Summit 1828 Comment
  CDA7633  Senecio jacobaea F. Wetherbee 1959-8-27 2983 Humboldt Simpson property, Sweezey Dam, Mad River, south of Korbel. 0 Comment
  UCD135607  Senecio minimus R. Tofsrud 1949-7-1 s.n. Humboldt Ferndale, Wildcat grade. Comment
  CAS-BOT-BC364224  Senecio sylvaticus Alice Eastwood May 15 s.n. Humboldt Samoa Comment
  HSC58000  Senecio triangularis G. L. Clifton, Griswold 1979-7-31 11780 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1805 Comment
  CAS-BOT-BC364522  Senecio vulgaris Mrs. H. C. Cantelow 1936-8-29 1581 Humboldt Old Man of Spring, Redwood Highway Comment
  CHSC57336  Sequoia sempervirens Michelle Y. Wagner 1990-4-10 15 Humboldt Hope creek trail, 5 miles n of Orick. Ravine on w side of Hwy 101. 152 Comment
  SDSU292  Sequoia sempervirens Wayne A. Bemis 1963-11-29 245 Humboldt 1289 D st Arcata. Empire series Sandstone, West slope. Ocean fog belt of North Coast. 55 Comment
  UC275474  Sequoia sempervirens Joseph P. Tracy 1925-8-9 7281 Humboldt South Fork Eel River at Salmon Creek; Northern Coast Ranges, South Fork Eel River, Salmon Creek 152 Comment
  HSC19856  Sherardia arvensis F. B. Plett 1963-4-27 37 Humboldt 1.5 mi. N of Trinidad along old Hwy. 101 Comment
  JEPS30462  Sherardia arvensis Lauramay T. Dempster 1963-7-8 3847 Humboldt 2.1 mi w Bridgeville (on road to Eureka, along Van Duzen River) 160 Comment
  CAS-BOT-BC205567  Sidalcea malachroides Doris K. Kildale 1926-5-16 1837 Humboldt Horse Mountain cut-off 792 Comment
  HSC16012  Sidalcea malachroides J. P. Tracy 1936-5-17 14812 Humboldt Fickle Hill, 6 mi. SE of Arcata. 610 Comment
  POM61723  Sidalcea malachroides Jos. Burtt Davy, Walter C. Blasdale 1899-6-13 5482 Humboldt Camp Grant Comment
  RSA12518  Sidalcea malviflora subsp. asprella Carl B. Wolf 1934-7-3 5918 Humboldt 21 miles from Orick on Weitchpec Rd. common. 152 Comment
  HSC57355  Sidalcea malviflora subsp. nana Overton, Butler 1979-7-26 10047 Humboldt Near White Rock Spring, close to the town of Willow Creek 1554 Comment
  RSA46857  Sidalcea malviflora subsp. patula Doris K. Kildale 1927-7-1 3624 Humboldt Alton Hill Comment
  UC176968  Sidalcea malviflora subsp. patula Joseph P. Tracy and Ernest B. Babcock 1912-5-11 3598 Humboldt near Hydesville; Northern Coast Region, near Hydesville 30 Comment
  HSC104350  Sidalcea malviflora subsp. patula James Regan, Humboldt Redwood Co., LLC 19 Humboldt Kneeland 854 Comment
  UC1197968  Sidalcea oregana subsp. eximia Joseph P. Tracy 1932-9-16 10800 Humboldt Dows Prairie Northern Coast Ranges, Dows Prairie 60 Comment
  HSC74227  Sidalcea oregana subsp. spicata M. A. Baker 1980-7-22 3089 Humboldt Near Grogan Hole. 1676 Comment
  JEPS50973  Silene californica Lincoln Constance 1934-6-1 770 Humboldt Bull Cr Road between Dyerville Bridge and Bull Creek (flat grove (mouth of Bull Cr)); Bull Creek Region, South Fork Eel River 45 Comment
  UC906706  Silene californica Harold E. Parks and Joseph P. Tracy 1942-7-1 11575 Humboldt Dinsmore's 762 Comment
  OBI22895  Silene gallica H. E. & S. T. Parks, S. T. Parks May1937 5938 Humboldt Trinidad, Spruce Cove 0 Comment
  UC1541418  Silene gallica W. K. Parks June, 1932 Humboldt vicinity Trinidad; vicinity of Trinidad Comment
  HSC23821  Silene gallica R. A. Vanbianchi 1971-6-14 1 Humboldt Comment
  UC183561  Silene hookeri Joseph P. Tracy 1913-6-20 4234 Humboldt nw slope Buck Mountain (lower foothills); Northern Coast Ranges, lower foothills Buck Mountain 762 Comment
  BLMAR349  Silene hookeri Jennifer Anthony-Wheeler 2003-5-5 349 Humboldt Eden valley 807 Comment
  JEPS30735  Silene hookeri Lincoln Constance, Alan A. Beetle with Joseph P. Tracy 1940-5-17 2612 Humboldt near Eureka; near Eureka, McClellan Mountain 822 Comment
  SEINET11944375  Silene hookeri J. P. Tracy 1950-1 18880 Humboldt Burr Valley Road, on NW slope of Buck Mountain Comment
  POM172672  Silene hookeri subsp. bolanderi Joseph P. Tracy 1913-6-20 4234 Humboldt Lower foothills of Buck Mountain, on its NW slope. 762 Comment
  CAS-BOT-BC389062  Silene laciniata subsp. californica A. M. Vollmer; L. Beane 1951-6-6 126 Humboldt On road between Orick and Weitchpec Comment
  UC161208  Silene menziesii Chesnut and Drew 1888-7-23 Humboldt Hy-Am-Pom Comment
  CAS-BOT-BC389880  Silene scouleri subsp. scouleri Joseph P. Tracy 1904-9-1 2141 Humboldt Northern Coast Region. At Eureka. On bluff back of Bucksport 60 Comment
  JEPS53878  Sisymbrium officinale Lincoln Constance 1934-5-31 755 Humboldt along Bull Creek, from w boundary of park to Grasshopper Peak (Squaw Creek) Road, n side of Bull Creek, South Fork Eel River Bull Creek; Bull Creek Region, South Fork Eel River Comment
  HSC13925  Sisyrinchium bellum D. E. Anderson 1962-3-31 1966 Humboldt Along new Hwy. 101, W side of Freshwater Lagoon Comment
  HSC13929  Sisyrinchium bellum R. D. Modaferri 1965-5-13 97 Humboldt 0.8 mi. N of Trinidad on Trinity St. 305 Comment
  HSC98162  Sisyrinchium bellum Brad Klipfel 1973-4-28 12 Humboldt Along Canyon Creek Comment
  HSC62981  Sisyrinchium californicum David Wheeler 1979-5-22 129 Humboldt Samoa, intersection of Samoa Blvd. and the railroad tracks near Arcata Redwood Co. Comment
  JEPS62117  Smilacina racemosa W. L. Jepson 1902-7-24 2115 a Humboldt 1/2 mi below summit; Trinity Summit Comment
  UC1197804  Smilacina racemosa Joseph P. Tracy 1936-8-7 15106 Humboldt 2 mi se Devil's Hole; Trinity Summit 1584 Comment
  UC1197799  Smilacina racemosa Joseph P. Tracy 1914-5-17 4474 Humboldt Cumens claim Northern Coast Region, region about Humboldt Bay (on ridge between Ryans Slough and Freshwater Creek) 304 Comment
  HSC21296  Solanum aviculare A. H. Teshima 1963-4-20 21 Humboldt Moonstone Beach area Comment
  HSC21308  Solanum nigrum Francis Morrell 1949-5-30 35 Humboldt Weitchpec Comment
  HSC21312  Solanum parishii D. E. Anderson 1965-6-1 3778 Humboldt Along Friday Ridge Rd. about 3 mi. NE of its Jct. with Titlow Hill Rd. 1067 Comment
  HSC59024  Solanum parishii M. A. Baker 1979-6-7 784 Humboldt N bank of road to Snow Mtn. 610 Comment
  CAS-BOT-BC154215  Solanum umbelliferum H. E. Wilder 1924-4-26 s.n. Humboldt Carlotta Comment
  SEINET10872207  Solidago Mary Susan Taylor 1990-8-22 Taylor 6079 Humboldt Samoa Recreation Area on Samoa Peninsula, Staging Area, Eureka. Coastal scrub in ORV area. Comment
  CDA8726  Solidago canadensis subsp. elongata M. R. Pryor 1948-7-22 Humboldt County Road, Loleta. 0 Comment
  JEPS32394  Solidago elongata Lincoln Constance 1934-6-25 925 Humboldt on Redwood Highway 4 mi n of Dyerville and n boundary Humboldt Redwood Park (Englewood, Bull Creek Region, South Fork Eel River); South Fork Eel River, Bull Creek Region, Englewood Comment
  UC630465  Solidago elongata H. E. and S. T. Parks September 1937 24081 Humboldt Spruce Cove , Spruce Cove (Trinidad) 64 Comment
  CAS-BOT-BC365671  Solidago spathulata Harley P. Chandler 1901-5-1 1203 Humboldt North Coast Ranges. Humboldt Bay 30 Comment
  HSC67441  Solidago spathulata J. P. Smith 1971-10-6 4948 Humboldt End of Murray Rd. in McKinleyville. Comment
  BLMAR757  Solidago velutina subsp. californica Jennifer Wheeler 2013-9-4 757 Humboldt King range, strawberry rock grazing allotment 252 Comment
  UCD136120  Soliva sessilis Linda M. Barker 1976-4-13 1385 Humboldt 3 miles west of Arcata. Comment
  HSC67888  Sonchus oleraceus J. P. Smith 1973-5-26 6862 Humboldt Scotia Bluffs along the Eel River near Rio Dell Comment
  HSC89465  Sonchus oleraceus P. A. Daly 1986-3-12 69 Humboldt Trinidad Head, along trail 61 Comment
  UC1198764  Sorbus scopulina var. scopulina Joseph P. Tracy 1935-7-28 14310 Humboldt Ridges e of Corral Prairie; Trinity Summit 1828 Comment
  RSA85191  Sparganium angustifolium F. W. Peirson 1926-7-12 7042 Humboldt Humboldt County: Orick Comment
  JEPS32230  Sparganium emersum var. emersum Joseph P. Tracy 1926-8-22 7771 Humboldt pond between Little Van Duzen River and Dinsmore's; Northern Coast Ranges 670 Comment
  UC176182  Sparganium emersum var. emersum Joseph P. Tracy 1913-9-9 4405 Humboldt near mouth of Little River; Northern Coast Ranges 3 Comment
  CAS-BOT-BC235371  Spartina densiflora W. A. Silveus 1938-7-10 2966 Humboldt Eureka Comment
  HSC89998  Spergula arvensis Leonel Arguello 1989-6-24 Humboldt Lanphere-Christensen Dunes Preserve 3 mi. W of Arcata. Middle of Fernstrom-Root trail towards N end of it Comment
  CHSC14126  Spergula arvensis subsp. arvensis D. Joley 1967-8-16 49 Humboldt Found at a fish hatchery 4 mi n of Orick. Comment
  HSC98776  Spergularia rubra Cara Witte 2007-8-9 627 Humboldt Grouse Mountain. Forest Service Road 5N04. Near spring. 1583 Comment
  HSC100151  Spirodela polyrhiza M. A. Ericksen 1979-5-29 308 Humboldt Northern-most of Clam Beach ponds Comment
  HSC100154  Spirodela polyrhiza J. M. DiTomaso 1979-4-21 893 Humboldt Next to Hwy. 101 at Crannell Rd. exit between Westhaven and Mckinleyville Comment
  CHSC93382  Stachys B. Castro; L. Janeway 1996-7-29 688 Humboldt Ca 4 air mi NE of Orick, along Lost Man Creek Trail. 36 Comment
  UC630639  Stachys ajugoides var. ajugoides Joseph P. Tracy 1939-6-23 16312 Humboldt Park's garden Trinidad 3 Comment
  UC577330  Stachys ajugoides var. rigida Joseph P. Tracy 1934-7-18 13455 Humboldt Grouse Mountain North Coast Ranges 1615 Comment
  UCLA71172  Stachys ajugoides var. rigida C. Epling, Wm. Robison 1935-7-22 Humboldt Patrick's Point Comment
  UC668074  Stellaria nitens Joseph P. Tracy 1938-6-13 15911 Humboldt Cold Springs; Grouse Mountain 1432 Comment
  UC1103547  Stellaria nitens Joseph P. Tracy 1918-5-1 4899 Humboldt Kneeland Prairie Northern Coast Ranges (Dan McBride place) 762 Comment
  UC161001  Stellaria nitens Joseph P. Tracy 1910-4-24 3126 Humboldt near Humboldt Bay (Ocean Beach at Humboldt Bay); Northern Coast Region Comment
  UC1173636  Stenanthium occidentale Joseph P. Tracy 1937-7-25 15558 Humboldt ne of Hawkins Bar; Trinity Summit Range, Happy Camp Mountain 1280 Comment
  HSC57156  Streptopus amplexifolius Overton, Butler 1979-7-26 9955 Humboldt Near Willow Creek, E Fork, close to the town of Willow Creek 1326 Comment
  HSC54897  Stuckenia filiformis subsp. alpina G. L. Clifton, Griswold 1979-7-25 10957 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon 1784 Comment
  HSC17760  Stuckenia pectinata Rollin Sparrowe 1962-5-16 25 Humboldt S of road Comment
  JEPS13645  Symphoricarpos mollis Joseph P. Tracy 1932-7-11 10415 Humboldt Corral Prairie; Trinity Summit 1584 Comment
  UC602523  Symphoricarpos mollis Joseph P. Tracy 1936-8-8 15120 Humboldt head of Little Hors-Linto Creek; Trinity Summit 1463 Comment
  CAS-BOT-BC99173  Symphyotrichum chilense Alice Eastwood 1923-8-14 12318 Humboldt Samoa Comment
  UC418990  Symphyotrichum chilense H. E. and S. T. Parks 1930-9-14 772 Humboldt Big Lagoon Comment
  UC29837  Symphyotrichum chilense C. C. Marshall 1886-1-1 Humboldt Comment
  JEPS35821  Symphyotrichum subspicatum Rimo Bacigalupi, and L. R. Heckard 1964-7-28 8966 Humboldt 9.5 mi n and w, s of Cape Mendocino Petrolia; Cape Mendocino Comment
  UC153938  Symphyotrichum subspicatum Joseph P. Tracy 1910-10-8 3170 Humboldt Brainard's Point Northern Coast Ranges, Humboldt Bay 0 Comment
  UC1198057  Synthyris reniformis Joseph P. Tracy 1930-6-15 Humboldt Larrabee Creek near Bosworth's; Northern Coast Ranges 457 Comment
  HSC21150  Synthyris reniformis R. D. Modafferi 1965-3-13 13 Humboldt 1.2 mi. N of Trinidad on Trinity St. 0 Comment
  HSC78985  Tanacetum bipinnatum L. P. Janeway 1984-5-16 801 Humboldt N Spit of Humboldt Bay, on the W side of Samoa Road ca. 1/4 mi. NW of the boat ramp 5 Comment
  HSC90426  Tanacetum bipinnatum Jean Hanson 1980-6-22 93 Humboldt Indian (Gunther) Island in Humboldt Bay, city of Eureka. W end of island; ca. 100 ft. inland from shore Comment
  RSA121874  Tanacetum camphoratum H. S. Yates 1936-6-16 5651 Humboldt 0.5 mile SW of Samoa. 6 Comment
  HSC65900  Tauschia glauca M. A. Baker 1980-6-26 2396 Humboldt Near Sims Creek 610 Comment
  HSC71026  Tauschia kelloggii Thomas W. Nelson 1977-4-20 3318 Humboldt Along FS 1N15 between Hwy. 36 and summit 915 Comment
  UC154074  Tauschia kelloggii Joseph P. Tracy 1908-6-7 2607 Humboldt on Mad River at Maple Creek; Northern Coast Ranges, Mad River, Maple Creek 152 Comment
  CAS-BOT-BC85214  Taxus brevifolia Doris K. Kildale 1926-8-31 2601 Humboldt Union Mattole - Geo. 7 Niner Ranch, Mattole River Valley Comment
  HSC74647  Taxus brevifolia M. A. Baker 1980-5-17 1214 Humboldt Near Le Perron Peak 792 Comment
  LA5974  Taxus brevifolia L. Miller; 1934-8-25 Humboldt Carlotta, Van Duzen River Comment
  UC63993  Taxus brevifolia Mrs. M. H. Manning 1901-10-1 Humboldt Comment
  HSC46040  Tellima grandiflora Catherine Chin 1978-5-5 50 Humboldt 5.1 mi. from Ferndale on Mattole Rd. Comment
  HSC49031  Tellima grandiflora Patricia Shesgreen 1978-5-5 63 Humboldt 5.1 mi. S of Ferndale on Mattole Rd. Comment
  UC667096  Tellima grandiflora Joseph P. Tracy 1935-7-23 14163 Humboldt lower end Brett Hole; Trinity Summit 1584 Comment
  HSC93510  Tellima grandiflora Gordon Leppig, Sylvia Leppig, Kai Neander 1998-5-6 745 Humboldt Hwy. 101 road cut overlooking Big Lagoon 40 Comment
  SEINET12216923  Tellima grandiflora F. H. Utech 1986-1 86 -390 Humboldt ca 5 mi N on Kings Peak Rd, from junction with Shelter Cove Rd, near Tolkan Recreation Area 480 Comment
  CAS-BOT-BC392287  Thalictrum fendleri Doris K. Kildale 1926-4-4 1749 Humboldt Trinidad Comment
  UC1196164  Thalictrum fendleri var. polycarpum Joseph P. Tracy 1947-4-27 17672 Humboldt Metropolitan 30 Comment
  UC552288  Thlaspi montanum var. montanum Joseph P. Tracy 1933-7-25 12885 Humboldt Grouse Mountain; North Coast Ranges, Grouse Mountain 1524 Comment
  HSC1302  Thuja plicata R. A. Rasp 1964-5-20 45 Humboldt HSC Campus Comment
  RSA352355  Thuja plicata J. P. Smith, AdvancedPlantTaxonomyClass 1971-10-9 5021 Humboldt Mad River above the Fish Hatchery. Comment
  SEINET10613416  Thuja plicata Harold E. Parks 1932-7-25 Parks 1139 Humboldt Camp 21, Hammond Lumber Company, Trinidad. Small trees in bogs. Host of Keithia thujina, a fungus new to California. Herbarium of the University of California Comment
  CAS-BOT-BC88319  Thysanocarpus curvipes Doris K. Kildale 1929-4-25 7478 Humboldt Kneeland Prairie. 853 Comment
  HSC6991  Thysanocarpus curvipes D. E. Anderson 1962-5-1 2204 Humboldt 1 mi. W of Hoopa Comment
  UC1198818  Thysanocarpus curvipes Joseph P. Tracy 1927-5-15 8047 Humboldt Hoopa Northern Coast Ranges, Hoopa (hillsides along Supply Creek) 304 Comment
  SDSU9574  Tiarella Harvey 1938-8-14 2320 Humboldt Between Arcarta & Willow Creek, US 299. Comment
  UC154149  Tiarella trifoliata var. unifoliata Mrs. M. H. Manning Sept. 1901 Humboldt near Hupa; near Hupa Comment
  UCR3923  Tiarella trifoliata var. unifoliata David Whistler, H. M. Whistler 1964-7-29 640729- 5 Humboldt 0.2 mi north of Meyers Flats on U.S. 101 75 Comment
  RSA304700  Tiarella trifoliata var. unifoliata S. Ganley 1971-5-30 1156 Humboldt Ave of Giants; Humboldt State Park. 152 Comment
  UC303041  Tofieldia occidentalis subsp. occidentalis Joseph P. Tracy 1926-6-27 7664 Humboldt Horse Mountain 1463 Comment
  HSC73841  Tonella tenella Gail Newton 1980-6-7 134 Humboldt Near Brush Mtn. 1128 Comment
  UC444981  Tonella tenella Mrs. M. H. Manning May 1902 Humboldt near Hupa Comment
  HSC34707  Torilis arvensis Thomas W. Nelson 1974-7-20 1698 Humboldt McKeown Ranch N of Dinsmore Comment
  HSC75412  Torilis arvensis J. O. Sawyer, M. A. Ericksen 1980-7-7 3574 Humboldt Slopes along Aikens Creek, Adroni Research Area 457 Comment
  SACT002419  Torresia macrophylla V. Barnes 1959-1 Humboldt Comment
  UCD93242  Torreyochloa pallida var. pauciflora H. S. Yates 1914-6-15 438 Humboldt Buckeye Mts. 883 Comment
  NY274177  Tracyina rostrata J. P. Tracy 1916-6-20 4735 Humboldt Alder Point Comment
  CAS-BOT-BC377101  Tragopogon porrifolius Doris K. Kildale 1925-3-23 587 Humboldt Eureka 30 Comment
  HSC14449  Trichostema lanceolatum D. E. Anderson 1963-10-6 2878 Humboldt Mad River bed, across from Essex Junction. Comment
  BLMAR277  Trientalis latifolia Jennifer Anthony-Wheeler 1999-7-30 277 Humboldt Headwaters Forest Reserve, growing in shaded places esp woodlands 548 Comment
  UC1223381  Trifolium albopurpureum var. dichotomum Joseph P. Tracy 1933-5-20 12234 Humboldt s the point (mouth of Domingo Creek); Cape Mendocino Comment
  UC160920  Trifolium albopurpureum var. dichotomum Joseph P. Tracy 1906-7-4 2535 Humboldt near Hydesville (Yager Creek); Northern Coast Ranges 60 Comment
  UC1103432  Trifolium barbigerum Joseph P. Tracy 1932-5-10 9964 Humboldt near Petrolia (Mattole); North Caost Ranges 15 Comment
  UC1103436  Trifolium barbigerum J. P. Tracy 1901-4-24 1037 Humboldt immediate vicinity Eureka 0 Comment
  UC33444  Trifolium barbigerum W. C. Blasdale 1896-5-31 Humboldt Eureka Comment
  UC1223515  Trifolium barbigerum Joseph P. Tracy 1948-5-31 17984 Humboldt 1/2 mi ne Garberville (bench) 304 Comment
  HSC45115  Trifolium bifidum R. Sutherland 1978-5-19 14 .19578 Humboldt 134 Comment
  UC1223496  Trifolium bifidum var. bifidum Joseph P. Tracy 1935-5-25 13903 Humboldt betw forks of creek; Dobbyn Creek Comment
  UC1197495  Trifolium cyathiferum Joseph P. Tracy 1933-7-15 12735 1/2 Humboldt lower foothills of nw slope; Buck Mtn Comment
  RSA168901  Trifolium depauperatum Joseph P. Tracy 1933-5-20 12242 Humboldt Mattole Valley at Petrolia. Comment
  UC1103441  Trifolium depauperatum var. depauperatum Joseph P. Tracy 1902-6-3 1645 Humboldt near Harris (Spruce Grove); Northern Coast Ranges, Eureka 914 Comment
  POM214884  Trifolium dichotomum Joseph P. Tracy 1932-5-1 9894 Humboldt Vicinity of Garberville Comment
  BLMAR741  Trifolium dubium Jennifer Wheeler 2015-5-18 741 Humboldt King range, at corrals or strawberry rock grazing allotment 121 Comment
  HSC15117  Trifolium dubium A. E. Inman 1982-5-25 Humboldt N bank of Mad River, 200 yrds. W of Lindsey Creek Comment
  HSC100531  Trifolium eriocephalum Carl C. Marshall Jun 1886 282 Humboldt Bald Hills, near Orcutt's. Comment
  HSC98508  Trifolium eriocephalum subsp. eriocephalum Cara Witte 2007-6-7 225 Humboldt Along National Forest 1 on Kinsey Ridge. 1 mile south of intersection with 4N06. 1263 Comment
  UC1602084  Trifolium eriocephalum var. eriocephalum Joseph P. Tracy 1930-6-8 8728 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  HSC100534  Trifolium fucatum Carl C. Marshall Mar 1886 18 Humboldt Hills. Comment
  SDSU5278  Trifolium fucatum D. F. Howe 1962-5-22 3308 Humboldt 0.7 miles east of Orick on Bald Hill road. 396 Comment
  UC1223456  Trifolium fucatum Joseph P. Tracy 1950-6-8 18748 Humboldt 1 mi e Cape Mendocino; Cape Ridge 152 Comment
  UC906701  Trifolium gracilentum Harold E. Parks and Joseph P. Tracy 1942-5-16 11549 Humboldt vicinity Garberville 152 Comment
  HSC97455  Trifolium hirtum Cara Witte 2007-6-7 226 Humboldt Along National Forest 1 on Kinsey Ridge. 1 mile south of intersection with 4N06. 1263 Comment
  JEPS109912  Trifolium howellii Dean W. Taylor 2006-8-3 19574 Humboldt Snow Camp Lake; un-named first-order tributary to Redwood Creek not shown on USGS map 1 mile NE of the lake. Comment
  UC1223452  Trifolium howellii Joseph P. Tracy 1934-7-18 13449 Humboldt at top Grouse Mtn 1524 Comment
  UCSB28369  Trifolium incarnatum Phelps, M. 1972-3-22 Humboldt 20 yds. north of south Garberville Exit, Hwy. 101 213 Comment
  HSC98880  Trifolium longipes subsp. hansenii Cara Witte 2007-6-1 166 Humboldt Horse Mountain Botanical Area. Along Forest Service 6N38. 1355 Comment
  HSC71447  Trifolium microcephalum J. P. Smith, Advanced Plant Taxonomy Class 1971-10-9 5023 Humboldt Banks and flood plain of the Mad River above the fish hatchery. Comment
  HSC71451  Trifolium microcephalum J. P. Smith 1973-5-26 6870 Humboldt Scotia Bluffs along the Eel River near Rio Dell Comment
  HSC45179  Trifolium microdon R. Sutherland 1978-5-21 1 .21578 Humboldt 433 Comment
  POM214881  Trifolium microdon Joseph P. Tracy 1927-6-5 8102 Humboldt Valley of S Yager Creek Comment
  UC1197504  Trifolium obtusiflorum Joseph P. Tracy 1914-5-30 4480 Humboldt near Hydesville; Northern Coast Ranges 60 Comment
  UC1197501  Trifolium obtusiflorum Joseph P. Tracy 1915-6-6 4648 Humboldt along rr track (Eureka); Northern Coast Region 0 Comment
  JEPS4443  Trifolium oliganthum Joseph P. Tracy 1921-4-24 5438 Humboldt facing South Fork of Eel River (Phillipsville); Northern Coast Ranges 121 Comment
  UC1103444  Trifolium oliganthum Joseph P. Tracy and Ernest B. Babcock 1912-5-11 3609 Humboldt near Hydesville; Northern Coast Region Comment
  UC1541578  Trifolium oliganthum Parks and Tracy 1930-5-25 957 Humboldt Laribee Valley 762 Comment
  UC1223330  Trifolium pratense Joseph P. Tracy 1941-8-23 16995 Humboldt Eureka Comment
  RSA246676  Trifolium pratense Robert F. Thorne, Percy C. Everett, K. Thorne 1965-8-8 35259 Humboldt N. edge of Eureka, E. of Hwy. 101 5 Comment
  RSA349641  Trifolium pratense Unspecified 1936-8-18 4815 Humboldt South o f Eureka Comment
  HSC57902  Trifolium repens Gilbert Muth 1979-7-31 11496 Humboldt Near Tish Tang A Tang Creek, S Fork, close to the town of Gasquet 1417 Comment
  UCD109390  Trifolium subterraneum R. Tofsrud 1949-7-1 s.n. Humboldt Hydesville. Comment
  UC1197562  Trifolium variegatum var. variegatum Joseph P. Tracy 1927-6-17 8283 Humboldt lower w foothills of Chaparral Mtn (Three Cabins); Northern Coast Ranges 457 Comment
  HSC32919  Trifolium willdenovii Thomas W. Nelson, James Nelson 1973-5-28 966 Humboldt McKeown Ranch N of Dinsmore Comment
  UC1197516  Trifolium willdenovii Joseph P. Tracy 1927-5-8 7994 Humboldt Garberville vicinity Northern Coast Ranges 121 Comment
  UC495686  Trifolium willdenovii Joseph P. Tracy 1932-4-23 9829 Humboldt along South Fork of Eel River (Miranda); Northern Coast Ranges 121 Comment
  CHSC68785  Trifolium wormskioldii Vernon Oswald 1997-6-5 8540 Humboldt Samoa Dunes Recreation Area at the south tip of the North Spit of Humboldt Bay. Along the road to the jetty. 6 Comment
  JEPS66096  Trifolium wormskioldii Joseph P. Tracy 1923-6-17 6273 Humboldt Big Lagoon Northern Coast Ranges 6 Comment
  UC1223510  Trifolium wormskioldii Joseph P. Tracy 1932-6-9 14882 Humboldt Bear River Ridge 609 Comment
  UCD109957  Trifolium wormskioldii W. A. Williams 1956-6-19 s.n. Humboldt Domingues Creek. 91 Comment
  RSA239713  Triglochin maritima Larry E. DeBuhr 1973-4-23 998 Humboldt Big Lagoon 10 miles S of Orick, SW end of lagoon Comment
  UC1099938  Triglochin maritima Malcolm A. Nobs, S. Galen Smith 1949-8-11 1345 Humboldt on eastern side of Big Lagoon Big Lagoon Comment
  UC146219  Trillium albidum Joseph P. Tracy 1905-4-2 2155 Humboldt region about Humboldt Bay near Arcata; Northern Coast Region, Humboldt Bay 0 Comment
  CHSC23038  Trillium ovatum E. K. Daniels 1964-4-18 33 Humboldt Prairie Creek State Park; 1 mi from Pacific Ocean beach on trail towards Park Headquarters. 30 Comment
  CSUSB389  Trillium ovatum Keith Thompson 1970-12-27 Humboldt Arcata, California. 45 Comment
  HSC41250  Trillium ovatum Brad Klipfel 1974-5-27 397 Humboldt Horse Mtn. Comment
  HSC90809  Triphysaria eriantha subsp. eriantha Gail Newton 1982-5-1 2487 Humboldt Eureka, Elk River Wildlife Area Comment
  UC657728  Triphysaria eriantha subsp. eriantha Milo S. Baker 1941-4-10 9942 Humboldt along hiwy a few mi s Eureka Comment
  HSC103096  Trisetum canescens Sydney Carothers 2014-7-3 20 Humboldt Six Rivers National Forest, Lassics Botanical Area, Mt. Lassic, upper north slope 1775 Comment
  UCD93304  Trisetum canescens A. A. Beetle; G. L. Stebbins 1942-6-1 3457 Humboldt 7 miles north of Weitchpec, in northern Humboldt County. Comment
  CAS-BOT-BC193513  Trisetum cernuum Harley P. Chandler 1901-5-1 1176 Humboldt Humboldt Bay 30 Comment
  CAS-BOT-BC193515  Trisetum cernuum Joseph P. Tracy 1926-5-22 7502 Humboldt Prairie Creek 152 Comment
  UC1541533  Trisetum cernuum Harold E. Parks 1934-5-16 4935 Humboldt Carlotta; near station 15 Comment
  UC212883  Trisetum cernuum Joseph P. Tracy 1920-5-30 5335 Humboldt Eureka; Northern Coast Ranges 60 Comment
  HSC3039  Triteleia hyacinthina D. E. Anderson 1965-5-15 3698 Humboldt 5 mi. N of Hoopa on Bald Hills Rd. 198 Comment
  UC175816  Triteleia laxa Joseph P. Tracy 1913-6-19 4210 Humboldt opposite Buck Mountain; Northern Coast Ranges, valley of Van Duzen River, Dinsmore's 762 Comment
  POM169620  Triteleia peduncularis Joseph P. Tracy 1903-6-12 1920 Humboldt Immediate vicinity of Eureka. 0 Comment
  HSC49358  Tsuga heterophylla Thomas W. Nelson, Jane P. Nelson 1979-9-10 5065 Humboldt Old logging rd. S of Lundbar Hills section of Eureka 49 Comment
  HSC59799  Umbellularia californica Clark L. Miller 1979-5-24 8 Humboldt At 880 Central Ave. McKinleyville Comment
  UC1196281  Umbellularia californica Joseph P. Tracy 1926-12-5 7835 Humboldt Blue Slide, on Van Duzen River Van Duzen River; Northern Coast Ranges, Blue Slide, Van Duzen River 91 Comment
  UC1196284  Umbellularia californica Joseph P. Tracy 1912-3-31 3570 Humboldt in valley of Mad River near Glendale; Northern Coast Ranges 30 Comment
  UC203898  Umbellularia californica Joseph P. Tracy 1918-9-29 5101 Humboldt South Fork Eel River, 8 mi above the mouth, Myers Ranch South Fork Eel River; Northern Coast Ranges, , Myers Ranch 60 Comment
  HSC99395  Vaccinium membranaceum K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-6-28 44 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  UC1197787  Vaccinium membranaceum Joseph P. Tracy 1934-8-29 13625 Humboldt near McKay Camp; South Fork Mountain 1676 Comment
  HSC31334  Vaccinium ovatum Larry E. DeBuhr, G. D. Wallace 1972-5-22 615 Humboldt Del Norte Coast Redwood State Park, Damnation Trail Comment
  HSC7914  Vaccinium ovatum J. Pursell 1964-10-11 10111 Humboldt Patricks Point State Park, trail to wedding rock Comment
  RSA46803  Vaccinium ovatum Doris K. Kildale 1927-5-15 3189 Humboldt Big Lagoon Flat. Comment
  SEINET3107074  Vaccinium ovatum Steve Selva, Roger Jensen 1974-8-28 96 Humboldt Redwood forest behind Humboldt State University, Arcata. Comment
  UCR275111  Vaccinium ovatum Charity A. Hartshorn 2016-5-14 31 Humboldt Arcata Community Forest 244 Comment
  UC1225910  Vaccinium parvifolium Joseph P. Tracy 1945-3-10 17495 Humboldt Eureka 30 Comment
  UC562450  Vaccinium parvifolium Joseph P. Tracy 1927-6-12 8133 Humboldt Horse Mountain 1432 Comment
  UCD118162  Vaccinium parvifolium T. I. Storer 1931-7-1 2222 Humboldt Coast. Comment
  JEPS9372  Valeriana californica Joseph P. Tracy 1935-7-30 14381 Humboldt Salmon Summit 2103 Comment
  HSC98632  Valeriana sitchensis subsp. scouleri Cara Witte 2007-5-21 73 Humboldt National Forest 1. 2 miles north of intersection with 4N09. 1267 Comment
  UC198661  Valeriana sitchensis subsp. scouleri Ethel Tracy 1917-6-12 Humboldt along Eel River from South Fork to Scotia; Northern Coast Ranges, Eel River 60 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
  CAS-BOT-BC76085  Vancouveria planipetala Doris K. Kildale 1928-5-19 5204 Humboldt Chalk Mountain. Comment
  HSC99651  Vancouveria planipetala Jimerson, J. Pageau 1979-6-12 530 Humboldt Near Hopkins Butte, close to the town of Orleans 1036 Comment
  UC1173641  Veratrum californicum var. californicum Joseph P. Tracy 1934-6-21 13244 Humboldt 2 mi s Field's Landing (at Still Ranch) 6 Comment
  UC1173644  Veratrum insolitum Joseph P. Tracy 1929-7-4 8636 Humboldt French Camp Ridge 1066 Comment
  JEPS11195  Verbascum thapsus W. L. Jepson 1936-8-12 17873 Humboldt South Fork Eel River Phillipsville; South Fork Eel River Comment
  UC35085  Verbena lasiostachys var. lasiostachys Hy-Ann Pum 1888-7-21 Humboldt Comment
  HSC28222  Veronica americana John R. Keith 1973-5-15 Humboldt Abandoned log pond about 200 yds. E of junction of Guintoli Ln. and West End Rd. Comment
  RSA246672  Veronica americana Robert F. Thorne, Percy C. Everett 1965-8-9 35319 Humboldt Clam Beach County Park: along highway. 3 Comment
  HSC21210  Veronica persica N. J. Cole, D. E. Anderson 1965-3-20 8 Humboldt 3 mi. W of Arcata near Lanphere Rd. Comment
  UC775054  Veronica scutellata Carl B. Wolf 1937-6-18 8895 Humboldt 1/2 mi s of Fortuna 15 Comment
  HSC32123  Veronica serpyllifolia subsp. humifusa D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5584 Humboldt Mt. Lassic and two smaller peaks to immediate E 1768 Comment
  HSC48401  Veronica serpyllifolia subsp. humifusa Brad Klipfel 1973-6-10 90 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC96800  Viburnum tinus Gordon Leppig 2005-3-23 2002 Humboldt McKinleyville, on E side of Azalea Rd. 55 Comment
  UC1197476  Vicia americana var. americana Joseph P. Tracy 1936-6-21 14996 Humboldt near Booth's Run (Iaqua); Iaqua 609 Comment
  HSC100542  Vicia americana var. truncata Carl C. Marshall Apr 1884 47 Humboldt Thickets and roadsides throughout Humboldt Bay. Comment
  JEPS66176  Vicia hassei Lincoln Constance 1934-6-6 826 Humboldt Dyerville to Horse Prairie (fire trail); South Fork Eel River, Bull Creek Region Comment
  HSC38932  Vicia hirsuta Linda M. Barker 1976-5-13 1479 Humboldt Lanphere-Christensen Dunes; 3 mi. W of Arcata Comment
  UCD108677  Vicia hirsuta P. B. Kennedy 1929-6-12 s.n. Humboldt Eureka. Comment
  HSC15257  Vicia sativa subsp. nigra C. Kline 1970-10-28 49 Humboldt North Bank Rd., 3 mi. W of Blue Lake, Mad River gravel bottoms Comment
  BLMAR500  Vicia sativa subsp. nigra Jennifer Wheeler 2009-4-30 500 Humboldt King range, Hidden Valley trail Comment
  HSC48377  Vicia sativa subsp. nigra Mark Flippo 1978-4-18 40 Humboldt Mckinleyville, Hill Top Rd. Comment
  UC1197472  Vicia sativa subsp. sativa J. P. Tracy 1909-7-22 3025 Humboldt immediate vicinity Eureka 0 Comment
  UC175671  Vicia villosa subsp. villosa Joseph P. Tracy 1913-6-10 4085 Humboldt near Bridgeville (Burns ranch); Northern Coast Ranges 304 Comment
  HSC21769  Viola adunca Wm. F. Bowman 1968-10-26 Humboldt Big Lagoon Co. Park, SW corner of Big Lagoon; side of road near parking lot Comment
  UC1762356  Viola adunca Milo S. Baker 1926-4 5432 Humboldt Carlotta Comment
  CAS-BOT-BC263953  Viola adunca V. Rattan 1882-6-1 s.n. Humboldt Kneeland RIver Comment
  HSC98827  Viola adunca var. adunca Cara Witte 2007-6-1 167 Humboldt Horse Mountain Botanical Area. Along Forest Service Road 6N38. 1382 Comment
  HSC48825  Viola bakeri Brad Klipfel, J. P. Smith, J. O. Sawyer 1973-5-27 36 Humboldt Grogan's Hole near N Trinity Mtn. 1829 Comment
  HSC22846  Viola cuneata D. E. Anderson, J. O. Sawyer, J. P. Smith 1970-5-10 5053 Humboldt ca. 6 miles W of Hoopa, along road from Redwood Creek to Hoopa Comment
  HSC91931  Viola glabella E. Mackey 1986-9-2 Humboldt Patrick's Point State Park Comment
  CAS-BOT-BC536498  Viola glabella Alice Eastwood 1907-4-21 26 Humboldt Trinidad Comment
  HSC97173  Viola glabella Yun Chan, Renee Meyer, Sophary Yun 2007-6-13 11 Humboldt 1 mi. E of Hwy. 299 on F.S. Rd. NF1; Grouse Mtn. Meadow 1585 Comment
  JEPS50362  Viola glabella W. L. Jepson 1932-7-24 16376 Humboldt Camp Grant; Eel River, Camp Grant Comment
  HSC32079  Viola hallii D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5593 Humboldt Mt. Lassic and two smaller peaks to immediate E 1768 Comment
  HSC41234  Viola hallii Brad Klipfel 1974-5-8 324 Humboldt Horse Mtn.; E of the towers Comment
  CAS-BOT-BC530124  Viola lobata subsp. integrifolia Doris Kildale 1931-5-10 10577 Humboldt Snow Camp Comment
  UCD110697  Viola ocellata R. N. Raynor 1935-4-15 s.n. Humboldt Fort Seward. Comment
  HSC34874  Viola ocellata Thomas W. Nelson, James Nelson 1975-5-5 1779 Humboldt Beside Hwy. 101, ~ 4 mi. S of the Salmon Creek Bridge Comment
  POM286592  Viola ocellata Lyman D. Benson 1929-7-16 1841 Humboldt Weott Ranger Station. S Fork Eel River. Comment
  HSC21876  Viola praemorsa subsp. praemorsa Elrid H. Spinas 1948-5-15 6 Humboldt Horse Mtn. Comment
  HSC89434  Viola sempervirens P. A. Daly 1984-5-8 10 Humboldt Trinidad Head 61 Comment
  UC1198425  Viola sempervirens J. P. Tracy 1901-4-7 1002 Humboldt immediate vicinity of Eureka (Sequoia Park); Sequoia Park 0 Comment
  SEINET11978067  Viola sempervirens Unknown 1936-1 113398 Humboldt Comment
  HSC100699  Vitis californica Carl C. Marshall Jun 1886 313 Humboldt Hoopa. Comment
  RSA121893  Vitis californica H. S. Yates 1936-6-24 5871 Humboldt 2 miles E of Bear Butte. Comment
  UC169887  Vitis californica P. E. Goddard 1901-1 13 Humboldt Hupa Valley Comment
  HSC40949  Vulpia bromoides Linda M. Barker 1976-6-1 1543 Humboldt Lanphere-Christensen Dunes, 3 mi. W of Arcata. Comment
  HSC9843  Vulpia bromoides D. B. Bader 1963-3-29 33 Humboldt Second of the Clam Beach Lagoons, W of Hwy. 101. Comment
  UCD93467  Vulpia bromoides Harley P. Chandler 1901-5-1 1175 b Humboldt Humboldt County. 30 Comment
  HSC22841  Vulpia microstachys D. E. Anderson, J. O. Sawyer, J. P. Smith 1970-5-10 5070 Humboldt 3 mi. W of Willow Creek along Three Creeks Rd. Comment
  HSC23096  Vulpia microstachys D. E. Anderson, J. P. Smith, J. O. Sawyer 1970-5-10 5056 Humboldt Along road from Redwood Creek to Hoopa, 1-3 mi. W of Hoopa Comment
  HSC35018  Vulpia microstachys Thomas W. Nelson 1975-5-24 1878 Humboldt McKeown Ranch, N of Dinsmore. Comment
  UC277197  Vulpia microstachys var. pauciflora Joseph P. Tracy 1921-6-12 5818 Humboldt Kneeland Prairie; Northern Coast Ranges 762 Comment
  HSC9926  Vulpia myuros E. W. Styskel 1964-4-3 56 Humboldt 0.25 mi. S of Garberville along Sprowl Creek Rd. Comment
  HSC9939  Vulpia myuros R. H. Berg 1963-4-18 54 Humboldt Arcata Bottoms, Arcata. Comment
  SEINET251379 Image available Vulpia myuros var. hirsuta Harley P. Chandler 1186 Humboldt Humboldt Bay Comment
  UC1145202  Vulpia myuros var. hirsuta Joseph P. Tracy 1936-6-17 14959 Humboldt nw slope Buck Mountain (Burr Valley); Burr Valley 1066 Comment
  JEPS43494  Whipplea modesta Lincoln Constance 1934-5-31 761 Humboldt along Bull Cr. from w boundary of Park to Grasshopper Pk. (Squaw Crk.) rd. (n side of cr.); South Fork Eel River, Bull Creek Region, Bull Cr. flat Comment
  UC666827  Whipplea modesta Joseph P. Tracy 1933-6-7 12522 Humboldt Blue Slide Van Duzen River 91 Comment
  UC725983  Whipplea modesta A. A. Heller 1937-6-8 15894 Humboldt 3 mi n Trinidad; Bishop Pine Lodge Comment
  UCD117288  Whipplea modesta K. Esau 1934-5-8 s.n. Humboldt Redwood Highway, near Scotia. Comment
  HSC70753  Woodwardia fimbriata R. York 1980-5-17 530 Humboldt Near Le Perron Peak 1066 Comment
  JEPS32063  Wyethia angustifolia Lincoln Constance 1934-5-29 725 Humboldt Upper Look Prairie (South Fork Eel River, Bull Creek Region); South Fork Eel River, Upper Look Prairie, Bull Creek Region 365 Comment
  UC582645  Wyethia angustifolia Joseph P. Tracy 1933-8-6 12937 Humboldt French Camp Ridge 1066 Comment
  UC302181  Wyethia angustifolia Joseph P. Tracy 1926-6-6 7577 Humboldt in open forest on road w from Hoopa Valley; Northern Coast Ranges, Hoopa Mountain 914 Comment
  SEINET11799554  Wyethia longicaulis J. P. Tracy 1950-1 18942 Humboldt near Clear Lake where Friday Ridge Rd comes to top of Grouse Mountain Ridge Comment
  CAS-BOT-BC382122  Xanthium strumarium Carl D. Duncan 1920-9-22 s.n. Humboldt Hoopa Valley Comment
  JEPS41266  Xanthium strumarium W. L. Jepson 1936-8-12 17876 Humboldt South Fork Eel River at Philipsville; South Fork Eel River, Philipsville Comment
  CAS-BOT-BC527082  Xerophyllum tenax Doris K. Kildale 1926-4-25 1814 Humboldt Hoopa Mountain 792 Comment
  UC1197336  Yabea microcarpa J. P. Tracy 1901-5-18 1100 Humboldt opposite Eureka (Sand Hills of Ocean Beach at Samoa); Samoa Comment
  UC154243  Yabea microcarpa Joseph P. Tracy 1908-6-9 2647 Humboldt Kneeland Prairie; Northern Coast Ranges 762 Comment
  HSC8424  Zeltnera muehlenbergii D. E. Anderson 1961-9-2 1765 Humboldt 3 mi. S of Cape Mendocino 3 Comment
  HSC15777  Zigadenus fremontii J. Wendell Howe 1930-3-30 78 Humboldt Diamond Canyon, presumed Humboldt Co. but not stated Comment
  CDA869  Zostera marina F. J. Shaughnessy 1999-6-14 s.n. Humboldt Humboldt Bay. Fields Landing 0.0-+1 . 0 Comment



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