Search Results — 2000 specimen records retrieved (1377 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
  UC502908  Abies concolor Joseph P. Tracy Jul 16 1930-Jul 19 1930 8962 Humboldt in fir forest near McKay Camp; Northern Coast Ranges, South Fork Mountain 1676 Comment
  UC1134161  Abies grandis G. T. Nordstrom 1937-7-1 1420 Humboldt 2.5 mi ne Orick; Orick Quad. 152 Comment
  UC615066  Abies grandis Beryl O. Schreiber 1934-6-5 1131 Humboldt wooded slope 5 mi e of Blue Lake (road to Redding) Comment
  CAS-BOT-BC73483  Abies magnifica Henry M. Pollard 1946-8-28 s.n. Humboldt Near summit of Orleans Mts. 1828 Comment
  UCR122367  Abronia latifolia George K. Helmkamp, E. A. Helmkamp 2001-7-8 7022 Humboldt North Coast, Samoa Peninsula, 2.6 miles south of CA Hwy 255 bridge across Humboldt Bay 15 Comment
  UCD112493  Acaena novae-zelandiae D. W. Cooper 1966-10-10 s.n. Humboldt SE of Forest Service Nursey, ca. 2 miles SE of Crannell and ca. 4 miles E of US Highway 101. Comment
  HSC62999  Acer circinatum David Wheeler 1979-5-13 108 Humboldt Redwood Valley, 1.0 mi. S of dump on other side of Redwood Creek from rd. Comment
  UC1199015  Acer glabrum var. glabrum Joseph P. Tracy 1936-8-7 15089 Humboldt head of Little Hors-Linto Creek Trinity Summit 1371 Comment
  CAS-BOT-BC331590  Acer macrophyllum Joseph Andorfer Ewan 1937-7-1 10435 Humboldt Stephan Grove on Eel River, N of Garberville Comment
  SEINET3098689 Image available Acer macrophyllum Joseph P. Tracy 1914-6-7 4493 Humboldt REgion about Humboldt Bay; valley of North Fork of Elk River. 0 Comment
  UC205634  Acer macrophyllum Joseph P. Tracy 1920-10-24 5404 Humboldt near Korbel (North Fork of Mad River) Comment
  CAS-BOT-BC28579  Achillea millefolium Ashley Colt Browne 1936-6-11 s.n. Humboldt Patrick's Point State Park Comment
  CHSC32850  Achillea millefolium L. L. Anderson 1981-4-25 6 Humboldt Ca. 0.5 mi e of ocean (Moonstone Beach) w of Hwy 101, 11.5 mi n of Arcata. 0 Comment
  HSC81936  Achillea millefolium Thomas W. Nelson, Jane P. Nelson 1979-7-3 4957 Humboldt Along road to Joe Losey property at junction of Kneeland and Maple Creek Rds. 610 Comment
  HSC89470  Achillea millefolium P. A. Daly 1986-3-12 97 Humboldt Trinidad Head, along trail 61 Comment
  HSC91930  Achillea millefolium E. Mackey 1987-5-2 Humboldt Patrick's Point State Park; Palmer's Point Comment
  SEINET2146169  Achillea millefolium H. E. Parks, Parks, S. T. 1943-1 24246 Humboldt Egg Point, Trinidad 120 Comment
  UC581789  Achillea millefolium Joseph P. Tracy 1942-7-12 10442 Humboldt open places at Corral Prairie; Trinity Summit 1584 Comment
  HSC12754  Achillea millefolium M. J. Athey 1970-12-5 26 Humboldt Along old road to Trinidad Head, Trinidad Comment
  HSC36212  Achillea millefolium John Rehling 1975-9-26 108 Humboldt Near Alliance Rd. Comment
  HSC3331  Achlys triphylla Doris K. Kildale 1926-4-2 1716 Humboldt Briceland Bridge Comment
  RSA452604  Achlys triphylla Anstruther Davidson 1927-01 s.n. Humboldt [Unspecified] Comment
  SEINET957914  Acmispon micranthus J. P. Tracy 1917-1 4795 Humboldt Mouth of Little River. 6 Comment
  HSC55327  Aconitum columbianum subsp. columbianum Griswold, Butler 1979-7-12 7159 Humboldt Near Groves Prairie, close to the town of Willow Creek. 1256 Comment
  HSC56001  Aconitum columbianum subsp. viviparum Overton, Butler 1979-7-31 11449 Humboldt Near Water Dog Lakes, close to the town of Hoopa 1830 Comment
  HSC99390  Actaea rubra subsp. arguta K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-6-28 39 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  SDSU19197  Adelinia grandis Michael G. Simpson, Michael Mesler and Michael Mayer 2008-5-27 3007 Humboldt Six Rivers National Forest. From Hwy 299, take Titlow Hill Road (at Berry Summit) ca. 7.5 miles south, west 0.2 miles to Cold Spring. Ca. 0.2 mile south-southeast of Cold Spring. Ca. 3.3 aerial miles south-southeast of Horse Mtn. Radio Tower. 1416 Comment
  SBBG7504  Adenocaulon bicolor H. and M. Dearing 1939-6-20 3687 Humboldt W of Willow Crk Comment
  UC249775 Image available Adiantum X tracyi Joseph P. Tracy 1924-9-16 6868 Humboldt Eureka 30 Comment
  HSC28929  Adiantum aleuticum Diane Johnson 1972-12-4 Humboldt Butler Valley near Big Bend Rd. Comment
  RSA687732  Adiantum aleuticum Maude Minthorn s.n. Humboldt Ferndale Comment
  HSC97560  Adiantum aleuticum Cara Witte 2007-6-1 161 Humboldt Horse Mountain Botanical Area. Near mine area. Forest Service Road 6N38. 1298 Comment
  POM182456  Adiantum jordanii Joseph P. Tracy 1914-5-14 4427 Humboldt Hook Stream banks 122 Comment
  RSA458173  Aesculus californica Charlotte M. Hoak 1931-07 s.n. Humboldt Alton. Comment
  HSC56442  Agastache urticifolia Griswold, Butler 1979-7-12 7184 Humboldt Near Groves Prairie, close to the town of Willow Creek. 1256 Comment
  CAS-BOT-BC30382  Ageratina occidentalis Carl B. Wolf 1927-8-27 1157 Humboldt On the Klamath River, 2 mi. below the Salmon River Comment
  HSC4597  Agoseris grandiflora John Johnson 1962-8-17 1004 Humboldt Samoa Peninsula; Lanpher Ranch Comment
  SEINET11854998  Agoseris grandiflora J. P. Tracy 1942-1 17276 Humboldt Garberville. North end of town Comment
  UC1239511  Agoseris grandiflora var. leptophylla Joseph P. Tracy 1934-6-27 13261 Humboldt Near Cold Springs; North Coast Ranges, Grouse Mountain. 1432 Comment
  HSC39005  Agoseris heterophylla Thomas W. Nelson, Jane P. Nelson 1976-5-31 2649 Humboldt N of junction of FS Rds. 1S07 and 5E27 along 5E27 1524 Comment
  UC275458  Agoseris heterophylla var. heterophylla Joseph P. Tracy 1925-5-30 7038 A Humboldt Laribee Valley; Northern Coast Ranges 701 Comment
  UC92278  Agoseris heterophylla var. heterophylla W. W. Price 1900-6-30 Humboldt Mad River Comment
  UC165751  Agoseris heterophylla var. heterophylla Joseph P. Tracy 1908-6 2735 Humboldt opposite, in valley of Van Duzen River Buck Mountain; Northern Coast Ranges, Van Duzen River 762 Comment
  UC582739  Agoseris heterophylla var. heterophylla H. E. Parks and Joseph P. Tracy 1934-6-27 13261 Humboldt in open places Grouse Mt. 1432 Comment
  RSA249712  Agrostis capillaris R. F. Thorne, P. Everett 1965-8-8 35247 Humboldt N edge of Eureka, E of Hwy in weedy land-fill 5 Comment
  UC1145067  Agrostis densiflora Joseph P. Tracy 1936-6-8 14873 Humboldt clay bluff close to ocean shore Trinidad 3 Comment
  UC1052443  Agrostis exarata H. E. and S. T. Parks 1952-6 7553 Humboldt Spruce Cove Trinidad 60 Comment
  UCD52139  Agrostis exarata Joseph P. Tracy 1936-6-28 15030 Humboldt Bald Mountain; at 'Lake Prairie'. 1066 Comment
  HSC58752  Agrostis gigantea Overton, Butler 1979-7-24 9620 Humboldt Near Titlow Hill, close to the town of Willow Creek. 381 Comment
  POM207005  Agrostis hallii Davy Blasdale 1899-05 5873 Humboldt Martins Ferry. Comment
Read comments
Dec 1 2014
  UCD52683  Agrostis hallii J. I. Mallory 1955-9-17 124 Humboldt one mile west of McClellan Ranch. 304 Comment
  CAS-BOT-BC139452  Agrostis hyemalis Doris K. Kildale 1926-9-5 2624 Humboldt Lasseck's Peaks. Near Canal Camp. 1661 Comment
  UC1103394  Agrostis idahoensis Joseph P. Tracy 1935-7-27 14279 Humboldt Corral Prairie Trinity Summit, Corral Prairie 1584 Comment
  UC186902  Agrostis microphylla Joseph P. Tracy 1900-7-4 875 Humboldt Ocean Beach at Humboldt; Northern Coast Region, Ocean Beach, Humboldt Bay Comment
  HSC49053  Agrostis pallens Thomas Nelson, Jane Nelson 1978-7-3 4414 Humboldt McKeown Ranch, N of Dinsmore. Comment
  HSC37913  Agrostis stolonifera Peter Sorensen 1976-7-15 Humboldt Woodley Island Comment
  SEINET201011  Aira praecox J. P. Tracy 1932-5-16 10103 Humboldt Near Samoa on Humboldt Bay north coast region 6 Comment
  POM169690  Allium bolanderi H. P. Chandler 1901-06 1434 Humboldt Klamath River. 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
  HSC32146  Allium falcifolium D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5600 Humboldt Mt. Lassic and two smaller peaks to immediate E 1768 Comment
  HSC82040  Allium falcifolium Thomas W. Nelson, James Nelson 1980-6-10 5407 Humboldt Along Swayback Ridge 4-wheel drive rd. 2.5 mi. N of the junction with USFS rd. 1S07 1463 Comment
  CAS-BOT-BC135843  Allium hoffmanii Thomas W. Nelson; James L. Nelson 1980-6-10 5440 Humboldt Along branch road off Swayback Ridge Road ca. 1/2 mile east of junction - Six Rivers National Forest 1371 Comment
  CAS-BOT-BC135846  Allium hoffmanii Thomas W. Nelson; James L. Nelson 1980-6-10 5417 Humboldt Along road to Red Mountain 0.5 miles west of junction with Swayback Ridge Road - Six Rivers National Forest 1371 Comment
  UC15006  Allium membranaceum Joseph Burtt Davy Jun 21 1899-Jun 23 1899 5820 Humboldt Trinity Summit Trail, Hoopa Valley, low down Hoopa Valley, Trinity Summit Trail Comment
  HSC56339  Allium serra Griswold, Butler 1979-7-10 6224 Humboldt Near Kinsey Ridge, close to the town of Willow Creek 1244 Comment
  JEPS56396  Allium unifolium Joseph P. Tracy 1918-7-5 5004 Humboldt Mattole River Northern Coast Ranges, White Thorn Valley, Mattole River 304 Comment
  HSC78649  Allium validum D. K. Imper 1982-7-23 1480 Humboldt Near Onion Lake. 1371 Comment
  HSC42107  Allium validum Thomas W. Nelson, Jane P. Nelson 1977-8-6 3704 Humboldt Along S side of Lassic Peak 1463 Comment
  JEPS58618  Alnus rhombifolia W. L. Jepson 1902-7-29 2123 Humboldt Supply Creek Hupa Valley 243 Comment
  UC213001  Alnus rhombifolia Joseph P. Tracy 1919-9-27 5303 Humboldt Willow Creek Northern Coast Ranges (near its mouth, (creek is a tributary of Trinity River)) 152 Comment
  RSA24390  Alnus rubra C. B. Wolf 1941-2-22 9917 Humboldt Along Redwood Highway 2.8 miles south of Patricks Point State Park 30 Comment
  SEINET12030339  Alnus rubra F. H. Utech 1986-1 86 -415 Humboldt between Capetown & Ferndale on Mattole Creek, SW slope of Bear River Ridge 100 Comment
  RSA550889  Alopecurus geniculatus R. F. Thorne, P. Everett 1965-8-9 35334 Humboldt Clam Beach County Park. 3 Comment
  UC1152033  Alopecurus geniculatus Joseph P. Tracy 1951-6-21 19524 Humboldt back of Everett Beck house (formerly Geroge Fray), bed of former Goose Lake Hydesville Comment
  RSA167288  Alopecurus saccatus Joseph P. Tracy 1951-6-21 19525 Humboldt back of the Everett Beck house (formerly George Gray) bed of former Goose Lake, Hydesville. Comment
  SEINET10473459  Ambrosia Mary Susan Taylor 1990-8-22 Taylor 6076 Humboldt Samoa Recreation Area on Samoa Peninsula, Staging Area, Eureka. Coastal scrub in ORV area. Comment
  HSC40260  Ambrosia chamissonis Linda M. Barker 1976-8-2 1674 Humboldt Lanphere- Christensen Dunes, 3 mi. W of Arcata Comment
  HSC5657  Ambrosia chamissonis H. E. Parks Sep 1941 24214 Humboldt Mouth of Little River Comment
  SEINET3132553  Ambrosia chamissonis J. W. Johnson 1961-8-17 1022 Humboldt Arcata, W.M. Lanphere farm, Samoa Peninsula. Comment
  HSC74216  Amelanchier alnifolia var. semiintegrifolia M. A. Baker 1980-7-23 3173 Humboldt Near Orleans Mtn. 1859 Comment
  UC1222322  Amelanchier utahensis Joseph P. Tracy 1951-5-6 19395 Humboldt 5 mi e Carlotta (open flat by old Strong's District School House) 60 Comment
  UC183554  Amelanchier utahensis Joseph P. Tracy 1913-6-17 4188 Humboldt near Buck Mountain summit; Northern Coast Ranges 1676 Comment
  CAS-BOT-BC137867  Ammophila arenaria Dziekanowski; Dunn; Bennett 1976-8-6 2504 Humboldt In the vicinity of a state park on the beach opposite McKenleyville. 3 Comment
  HSC39948  Ammophila arenaria Linda M. Barker 1976-6-22 1624 Humboldt 3 mi. W of Arcata Comment
  SACT000320  Ammophila arenaria D. Shillingbury 1963-5-11 Humboldt Coastal strand Comment
  UC1239646  Amsinckia lunaris Joseph P. Tracy 1930-5-25 8724 Humboldt near Bridgeville; Northern Coast Ranges 152 Comment
  HSC23719  Anagallis arvensis Tim Baroni 1971-7-5 104 Humboldt 8 mi. E of Petrolia 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
  HSC27391  Anaphalis margaritacea Thomas W. Nelson 1970-9-3 230 Humboldt Mad River. Comment
  HSC49064  Anaphalis margaritacea Patricia Shesgreen 1978-8-2 125 Humboldt Arcata Community Forest, Arcata; 200 yds. N of field house on top of hill overlooking baseball field Comment
  HSC89471  Anaphalis margaritacea P. A. Daly 1986-3-12 96 Humboldt Trinidad Head, along trail 61 Comment
  UC963845  Anaphalis margaritacea H. E. Parks and S. T. Parks 1943-8-1 24237 Humboldt along highway Stone Lagoon 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
  JEPS14108  Angelica hendersonii Joseph P. Tracy 1937-8-22 15674 Humboldt Table Bluff 91 Comment
  UC582634  Angelica hendersonii Joseph P. Tracy 1937-8-22 15674 Humboldt Table Bluff 91 Comment
  UC582656  Angelica hendersonii Joseph P. Tracy 1936-10-24 15205 Humboldt Table Bluff 91 Comment
  CDA38195  Angelica lucida Gordon Leppig 1998-6-18 839 Humboldt Route 101 on Humboldt Bay at mouth of Jacoby Creek. Comment
  HSC71326  Angelica lucida J. M. DiTomaso 1980-6-21 1607 Humboldt Clam beach. Comment
  SD109165  Angelica tomentosa var. hendersonii Joseph M. DiTomaso 1980-7-29 1800 Humboldt Elkshead, ca. 2 miles north of Trinidad Comment
  CAS-BOT-BC271452  Anisocarpus madioides Elizabeth Parsons Hawver 1915-6-1 s.n. Humboldt Carlotta Comment
  CAS-BOT-BC94796  Anisocarpus madioides R. C. Wenk; P. Hopkinson; M. Hammond; S. Spiegal 2008-6-6 835 Humboldt Humboldt Redwoods State Park. Look Prairie, 0.5 air mi. N of Mattole Road & 3 air mi. W of Hwy 101. 243 Comment
  HSC22864  Anisocarpus madioides D. E. Anderson 1965-5-8 3640 Humboldt About 2 mi. N of Willow Creek on road running along E side of Trinity River Comment
  UCD128893  Anisocarpus madioides K. Esau 1934-5-7 s.n. Humboldt Above Fort Seward. 457 Comment
  UC1222875  Antennaria suffrutescens Joseph P. Tracy 1946-5-4 17528 Humboldt along Trinity Highway; Willow Creek Canyon Comment
  UC1199376  Anthemis cotula Joseph P. Tracy 1918-7-1 4962 Humboldt along Eel River from South Fork to Scotia Eel River 60 Comment
  CAS-BOT-BC137742  Anthoxanthum odoratum Doris Kildale 1931-5-10 15681 Humboldt Snow Camp. Comment
  HSC8951  Anthoxanthum odoratum E. W. Styskel 1963-5-19 43 Humboldt 3 mi. SE of Korbel on Snow Camp Rd. 290 Comment
  RSA183515  Anthoxanthum odoratum G. Bos 1965-5-2 234 Humboldt Korbel-Bald Mtn. road, 5 miles east of Korbel. 732 Comment
  SEINET198594  Anthoxanthum odoratum H. E. Parks, ST Parks 1952-4-30 24444 Humboldt Spruce Cove Trinidad Comment
  UCD56238  Anthoxanthum odoratum Malcolm A. Nobs; S. Galen Smith 1949-8-3 1208 Humboldt ca. 2 miles north of Eureka, Humboldt Bay. Comment
  UC582470  Antirrhinum vexillocalyculatum subsp. breweri Joseph P. Tracy 1933-8-30 13004 Humboldt Horse Mountain; Northern Coast Ranges 1066 Comment
  UC147926  Antirrhinum vexillocalyculatum subsp. breweri Joseph P. Tracy Jul 1908 2790 Humboldt ridge between Van Duzen River and Mad River (near Low Gap, Humboldt and Trinity Counties); Northern Coast Ranges 914 Comment
  UC162567  Antirrhinum vexillocalyculatum subsp. breweri Joseph P. Tracy 1911-7-10 3482 Humboldt near Willow Creek (hill slopes at w side of Trinity River); Northern Coast Ranges, Trinity River 243 Comment
  UC1198741  Aphanes occidentalis Joseph P. Tracy 1919-4-27 5129 Humboldt Humboldt Bay Northern Coast Region (Ocean Beach) Comment
  UC1198742  Aphanes occidentalis Joseph P. Tracy 1919-5-31 5767 Humboldt Northern Coast Ranges. Along Willow Creek (Tributary of Trinity River) Near its mouth 152 Comment
  HSC58067  Apocynum androsaemifolium G. L. Clifton, Griswold 1979-8-1 11946 Humboldt Near Mill Creek Lakes, close to the town of Hoopa. 1692 Comment
  CAS-BOT-BC392160  Aquilegia formosa David D. Keck 1948-7-1 5974 Humboldt South side of Big Lagoon Comment
  HSC102623  Aquilegia formosa M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-29 1610 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1579 Comment
  HSC98836  Arabis subpinnatifida Cara Witte 2008-6-2 668 Humboldt 1/2 mile southeast of intersection National Forest 1 and 5N01. 1570 Comment
  HSC99596  Aralia californica Overton, Butler 1979-7-24 14090 Humboldt Near Titlow Hill, close to the town of Willow Creek. 1250 Comment
  UC213507  Arbutus menziesii Frank A. Graham 1919-12-20 Humboldt w side of Trinity River near Willow Creek; Northern Coast Ranges, Trinity River 152 Comment
  UC585939  Arctostaphylos Joseph P. Tracy 1934-3-11 13160 Humboldt French Camp Ridge 1066 Comment
  CAS-BOT-BC25210  Arctostaphylos canescens subsp. canescens J. P. Tracy 1941-4-8 16850 Humboldt Willow Creek Canyon, along Trinity Highway Comment
  CAS-BOT-BC25213  Arctostaphylos canescens subsp. canescens L. B. Kildale 1928-4-29 5960 Humboldt Bald Mountain - at Lord-Ellis junction. Comment
  CAS-BOT-BC23752  Arctostaphylos columbiana Joseph P. Tracy 1934-7-2 13293 Humboldt Vicinity of Trinidad 60 Comment
  CAS-BOT-BC23815  Arctostaphylos columbiana C. Hart Merriam 1921-7-10 s.n. Humboldt 19.5 miles south of Garberville, South fork of the Eel River. 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
  RSA622690  Arctostaphylos columbiana Jon E. Keeley, John Sawyer 1996-10-12 27678 Humboldt Along Highway 101 at edge of cutover redwood forest, 6 km south of Drury Scenic Parkway and Prairie Creek Redwoods State Park, north of Eureka. 320 Comment
  UC1198661  Arctostaphylos columbiana Joseph P. Tracy 1928-3-4 8403 Humboldt Miranda South Fork of Eel River 121 Comment
  UC397305  Arctostaphylos columbiana Joseph P. Tracy 1923-3-31 6169 Humboldt Table Bluff Northern Coast Region, around Humboldt Bay 60 Comment
  UC585920  Arctostaphylos columbiana Joseph P. Tracy 1936-8-24 15171 Humboldt 6 mi se Arcata; Fickle Hill 609 Comment
  UCD50873  Arctostaphylos glandulosa Roman Gankin 1965-8-5 545 Humboldt 6.5 miles west on Kings Mountain Road, Pacific Range Wilderness Area. Comment
  UCD50897  Arctostaphylos glandulosa Joseph P. Tracy 1940-7-14 16688 Humboldt Wilder Ridge (near Kings Peak). 762 Comment
  JEPS38648  Arctostaphylos glandulosa subsp. glandulosa W. L. Jepson 1932-8-8 16479 Humboldt Canoe Creek Grasshopper Peak 1066 Comment
  RSA632802  Arctostaphylos knightii Jon E. Keeley 1996-10-13 27765 Humboldt Bald Hills Road, eastern end of Redwood National Park, 25 km west of Highway 96, north of Eureka. 700 Comment
  RSA632812  Arctostaphylos knightii Jon E. Keeley 1996-10-13 27778 Humboldt Bald Hills Road, eastern end of Redwood National Park, 25 km west of Highway 96, north of Eureka. 700 Comment
  RSA633020  Arctostaphylos manzanita Jon E. Keeley 1996-10-13 27814 Humboldt Salyer Rest Area, east of Salyer, east of Willow Creek on Highway 299. 200 Comment
  CHSC110739  Arctostaphylos manzanita subsp. glaucescens Dean Wm. Taylor 2011-5-4 21119 Humboldt Larabee Valley, along Highway 36 about 1 mile east of the eastern end of the valley at the bridge for the Little Van Duzen River. 701 Comment
  POM367342  Arctostaphylos manzanita subsp. manzanita Thomas W. Nelson, Jane Nelson, A. Nelson 1976-2-21 2253 Humboldt Tish-Tang Campground. Comment
  HSC31439  Arctostaphylos nevadensis D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-13 5557 Humboldt Westward lower slopes of Black Lassic near Trinity Co. line. 1585 Comment
  CAS-BOT-BC40071  Arctostaphylos nevadensis subsp. knightii Doris K. Kildale 1926-8-22 2587 Humboldt On road between Orick & Martin's Ferry. Comment
  UCD52857  Arctostaphylos nevadensis subsp. knightii Roman Gankin; W. R. Hildreth 1976-10-26 1177 Humboldt 21.4 miles east of U.S. 101 on Bald Hills Road from Orick; French Camp Ridge. Comment
  CAS-BOT-BC46793  Arctostaphylos uva-ursi Joseph P. Tracy 1945-3-30 17504 Humboldt Eureka 45 Comment
  HSC90240  Arctostaphylos uva-ursi L. Watson, J. Meninga Mar 1991 12 Humboldt Near Manilla. Mad River Slough and Dunes. N of parking lot, W of trail Comment
  RSA166376  Arctostaphylos uva-ursi R. F. Thorne 1957-9-3 19024 Humboldt Patrick's Point State Park. Comment
  RSA636928  Arctostaphylos uva-ursi Jon E. Keeley, J. O. Sawyer 1996-10-11 27665 Humboldt Landfill Christensen Nature Conservancy Reserve, Arcata. 25 Comment
  SBBG54023  Arctostaphylos uva-ursi R. S. Woglum 1938-8-29 2020 Humboldt seashore, Samoa Comment
  SBBG83935  Arctostaphylos uva-ursi R. Gankin, W. R. Hildreth 1967-10-24 1147 Humboldt 1.7 mi S of Samoa, on Humboldt Peninsula Comment
  SD41455  Arctostaphylos uva-ursi Edith A. Purer 1932-7-26 4131 Humboldt Samoa Comment
  UC154201  Arctostaphylos uva-ursi Harley P. Chandler May, 1901 1193 Humboldt Humboldt Bay North Coast Ranges 30 Comment
  RSA1903  Arctostaphylos uva-ursi var. coactilis C. B. Wolf 1930-10-28 1035 Humboldt Samoa. 15 Comment
  HSC74372  Arctostaphylos viscida M. A. Baker 1980-6-16 1956 Humboldt Near Onion Mtn. 1280 Comment
  UC526766  Aristida oligantha Joseph P. Tracy 1933-8-27 13000 Humboldt Robertson's Ranch Vicinity of Garberville (hillsides in sheep range) 304 Comment
  UC154174  Armeria maritima subsp. californica Harley P. Chandler May, 1901 1153 Humboldt Humboldt Bay North Coast Ranges 3 Comment
  UCSB15631  Armeria maritima subsp. californica Breedlove, Dennis 1962-6-7 Humboldt 1.5 miles south of Samoa; on peninsula on western side of Humboldt Bay Comment
  CAS-BOT-BC82100  Arnica cernua Harley P. Chandler 1901-6-1 1298 Humboldt [Hupa] Hoopa Indian Reservation 609 Comment
  CAS-BOT-BC82103  Arnica cernua Thomas Nelson 1974-5-30 1345 Humboldt along the Hoopa-Redwood Valley Road Comment
  JEPS20979  Arnica cordifolia Joseph P. Tracy 1935-7-30 14372 Humboldt s of Red Cap Lake; Salmon Summit 2011 Comment
  SEINET11837502  Arnica cordifolia H. P. Chandler 1901-1 1400 Humboldt Klamath River 244 Comment
  RSA12448  Arnica discoidea C. B. Wolf 1934-7-1 5845 Humboldt 2.7 mi from Briceland on rd. to Shelter Cove. 91 Comment
  UC1103325  Arrhenatherum elatius Joseph P. Tracy 1927-9-25 8369 Humboldt Northern Coast Ranges, Eureka Eureka; Northern Coast Ranges, Eureka 0 Comment
  CAS-BOT-BC146269  Arrhenatherum elatius var. elatius Ashley C. Browne 1936-6-11 s.n. Humboldt Patrick's Point State Park. Comment
  CAS-BOT-BC146270  Arrhenatherum elatius var. elatius H. S. Yates 1936-6-23 5851 Humboldt 2 miles east of mouth of Mad River. 30 Comment
  JEPS37048  Artemisia dracunculus W. L. Jepson 1932-7-28 16437 Humboldt Dyerville Comment
  UC535739  Artemisia dracunculus Eleanor Armstrong 1190 Humboldt Richardson Grove Comment
  RSA34239  Artemisia suksdorfii C. B. Wolf 1927-8-29 1220 Humboldt Devils' Gate, S of Cape Mendocino Comment
  POM54272  Artemisia suksdorfii Jos Burtt Davy, W. C. Blasdale 1899-6-15 5544 Humboldt Near Scotia Comment
  CAS-BOT-BC400533  Asarum caudatum Volney Rattan 1882-6-1 s.n. Humboldt Mad River Comment
  HSC3266  Asarum caudatum D. E. Anderson 1962-3-8 1929 Humboldt E of HSC campus Comment
  HSC59473  Asarum caudatum M. A. Ericksen 1979-5-9 260 Humboldt Along Jolly Giant Creek, HSU campus Comment
  UC449996  Asclepias speciosa Mrs. M. H. Manning 1900-6 Humboldt Hupa Valley Comment
  CAS-BOT-BC65944  Aspidotis densa L. R. Abrams 1918-6-15 7123 Humboldt Brannan Mt near Willow Creek 1371 Comment
  POM182350  Aspidotis densa Joseph P. Tracy 1912-7-26 3849 Humboldt Kneeland Prairie 762 Comment
  RSA44512  Aspidotis densa Henry M. Pollard 1948-7-29 1 Humboldt Woodson Mine near Orleans Comment
  POM161487  Aster brickellioides Joseph P. Tracy 1918-9-18 5223 Humboldt Trinity Summit. Comment
  CDA30679  Aster chilensis M. K. Beyers, I. Shepardson 2009-9-13 252 Humboldt Off the eastern side of State Route 254 (Avenue of the Giants), along the Eel river, on and along a steep-cut bank that has been cemented over here, probably to prevent erosion. 0 Comment
  CAS-BOT-BC177275  Astragalus R. C. Barneby 1954-5-19 11570 Humboldt On Henry Tosteon Ranch near Bear Butte about 4 mi. s. of Miranda 762 Comment
  CAS-BOT-BC193137  Astragalus rattanii var. rattanii Joseph P. Tracy 1932-6-19 10245 Humboldt Buck Mountain, lower foothills of its northwest slope 762 Comment
  HSC103507  Astragalus umbraticus Thomas W. Nelson, Jane Nelson 1987-6-11 8526 Humboldt Along Forest Service Rd. 13N01, 9 mi. from junction with State Route 96 762 Comment
  HSC57103  Asyneuma prenanthoides Overton, Butler 1979-7-25 9836 Humboldt Near Ammon Creek, close to the town of Willow Creek. 671 Comment
  OBI1147  Athyrium filix-femina Robert J. Rodin 1962-9-5 6979 Humboldt Prairie Creek State Park Comment
  CAS-BOT-BC69520  Athyrium filix-femina subsp. cyclosorum L. R. Abrams 1916-7-11 6053 Humboldt At mouth of Grizzly Creek on Van Duzon River. Comment
  CAS-BOT-BC69523  Athyrium filix-femina subsp. cyclosorum Doris K Niles 1948-4-17 3 Humboldt Peugh Road Creek, 1 mi. e. of Loleta. Comment
  HSC60015  Athyrium filix-femina var. cyclosorum M. A. Baker 1977-5-1 281 Humboldt E of Humboldt State University. Comment
  UC197924  Athyrium filix-femina var. cyclosorum Joseph P. Tracy 1912-7-25 3814 Humboldt along Black Creek Kneeland Prairie; Northern Coast Ranges 762 Comment
  UC162643  Athysanus pusillus Joseph Burtt Davy and Walter C. Blasdale 1899-6-8 5350 Humboldt near Harris; North-Western California Comment
  CDA18213  Avena barbata G. D. Barbe, T. C. Fuller 1974-6-17 1841 Humboldt North Coast Ranges; Shelter Cove, uphill, E of Sail Court. 91 Comment
  HSC47798  Avena barbata Michael A. Watkins 1978-6-10 4 Humboldt Arcata, E side of the 7th Street overpass to Hwy. 101 Comment
  SEINET200927  Avena fatua J. P. Tracy 1916-5-31 4703 Humboldt Stitz Creek. Along Eel River between SOuth Fork and Scotia 61 Comment
  HSC9032  Avena sativa E. W. Styskel 1964-4-28 76 Humboldt End of Davis St. at the edge of Eel River in Rio Dell Comment
  CAS-BOT-BC98771  Baccharis douglasii Carl B. Wolf 1927-8-30 1239 Humboldt Minor's Ranch, Union Matole, 6 mi. so. of Petrolia Comment
  OBI78649  Baccharis pilularis Bresa Martin 2013-11-11 1 Humboldt On a small paved path leading out of Humboldt State University behind the Cypress Apartments. Halfway between the light posts labeled "312" and "313". Growing just outside the chain link fence. 30 Comment
  RSA14722  Baccharis pilularis C. B. Wolf 1927-8-29 1219 Humboldt Devils' Gate, S of Cape Mendocino Comment
  RSA176334  Baccharis pilularis R. F. Thorne 1957-9-3 1902 B Humboldt Patrick's Point State Park. Comment
  RSA254757  Baccharis pilularis Thomas W. Nelson 1971-11-11 601 Humboldt Growing on the sand dunes at the foot of Murray Rd. McKinleyville Comment
  HSC28931  Baccharis pilularis subsp. consanguinea Diane Johnson 1972-11-14 Humboldt Butler Valley near Maple Creek Comment
  HSC5117  Baccharis pilularis subsp. consanguinea J. W. Johnson 1961-11-20 1409 Humboldt Arcata; Hollow 10, Lanphere Farm, Samoa Peninsula Comment
  HSC100426  Baeria chrysostoma Carl C. Marshall Jun 1885 31 Humboldt Bear River. Comment
  UC1198289  Barbarea orthoceras Joseph P. Tracy 1932-7-16 10642 Humboldt along creek in McKay Prairie 1524 Comment
  HSC89519  Barbarea verna M. Roantree 1985-6-10 85 Humboldt W side of Trinidad Head Comment
  CAS-BOT-BC145787  Beckmannia syzigachne Joseph P. Tracy 1928-6-24 8472 Humboldt Valley of South Yager Creek. 762 Comment
  UC525613  Beckmannia syzigachne Joseph P. Tracy 1928-6-24 8472 Humboldt Valley of South Yager Creek 762 Comment
  CDA6267  Bellardia trixago T. R. Haig 1960-6-15 4575 Humboldt 8 miles north of Trinidad. 0 Comment
  HSC34805  Bellis perennis Dryden 1975-4-21 125 Humboldt Arcata Comment
  JEPS84961  Bellis perennis Barbara Ertter with Thomas J. Delendick 1987-5-16 6917 Humboldt Hwy 299 roadside ca 8 mi e Arcata (9 1/2 mi w of Lord Ellis summit) 152 Comment
  CAS-BOT-BC48154  Bensoniella oregona Joseph P. Tracy 1923-6-24 6363 Humboldt Bald Mountain - in cold wet meadow near high prairie 1066 Comment
  CAS-BOT-BC48158  Bensoniella oregona R. Bacigalupi; L. Constance; Reid Moran; R. L. Rodriguez; Joe Tracy; Sherwin Carlquist 1951-6-14 3410 Humboldt Bald Mountain ridge - in bog, edge of forest at High Prairie, on long high ridge between Mad River and Redwood Creek 1066 Comment
  HSC57111  Berberis aquifolium var. aquifolium Overton, Butler 1979-7-25 9852 Humboldt Near Ammon Creek, close to the town of Willow Creek. 671 Comment
  CAS-BOT-BC75677  Berberis nervosa L. B. Kildale 1931-8-23 s.n. Humboldt Snow Camp. 1219 Comment
  HSC35612  Berberis nervosa Thomas W. Nelson, Jane P. Nelson, James Nelson 1975-7-15 2024 Humboldt Just E of Redwood National Park along Bald Hills Rd. Comment
  HSC57110  Berberis nervosa Overton, Butler 1979-7-25 9851 Humboldt Near Ammon Creek, close to the town of Willow Creek. 671 Comment
  HSC81928  Berberis nervosa Thomas W. Nelson, Jane Nelson 1979-7-3 4951 Humboldt Along road to Joe Losey property at junction of Kneeland and Maple Creek Rds. 610 Comment
  CAS-BOT-BC75810  Berberis pinnata Harley P. Chandler 1901-6-1 1277 Humboldt North Coast Ranges. Hupa Indian Reservation. 1097 Comment
  CAS-BOT-BC412985  Bistorta bistortoides Doris Kildale 1931-5-10 10678 Humboldt Snow Camp Comment
  HSC102084  Bistorta bistortoides M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 988 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  HSC73635  Bistorta bistortoides M. A. Baker 1980-7-22 3107 Humboldt Near Grogan Hole. 1676 Comment
  CAS-BOT-BC66262  Blechnum spicant E. A. McGregor 1921-8-17 s.n. Humboldt On old abandoned road grade, S.E. of Orick 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
  POM256441  Boisduvalia densiflora var. densiflora Joseph P. Tracy 1937-7-19 15463 Humboldt Larrabee Valley 732 Comment
  HSC24555  Boschniakia hookeri Rudolf W. Becking 1972-6-30 720608 Humboldt Fish Lake area, Orleans 762 Comment
  HSC65854  Boschniakia strobilacea Gail Newton 1980-6-24 602 Humboldt Near Ladder Rock 1570 Comment
  HSC100314  Botrychium multifidum Lindsey Holm 2011-10-25 Humboldt Van Eck Forest near Fieldbrook. 7 Comment
  HSC99464  Boykinia major K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-14 118 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  HSC100718  Brassica campestris Carl C. Marshall May 1886 206 Humboldt Fields. Comment
  POM248380  Brickellia californica S. K. Harris, C. M. Wilder 1938-9-8 877 Humboldt Bars on Van Duzen River, below Blue Slide Comment
  HSC79462  Briza maxima Kenneth Clark 1980-5-10 661 Humboldt Access road to Shelter Cove 30 Comment
  UCD57276  Briza maxima Joseph P. Tracy 1950-5-30 18711 Humboldt Trinity River Valley, at Willow Creek. 152 Comment
  UC184146  Briza minor Joseph P. Tracy 1912-6-9 3664 Humboldt Alton; Northern Coast Region 30 Comment
  UCR84723  Briza minor Kathy Harper 1992-5-14 s.n. Humboldt North Coast Range, State Hwy 36 just north of the south fork of the Van Duzen River 762 Comment
  SEINET3884856  Brodiaea elegans Jan G. Cooper 1976-8-2 6 Humboldt Along road to Horse Mountain Ski Area turnoff of Hwy 299.; 0 Comment
  HSC74668  Brodiaea elegans subsp. elegans Gail Newton 1981-8-7 2433 Humboldt Near Bug Creek 1042 Comment
  HSC3025  Brodiaea elegans subsp. elegans G. Ghatala 1967-7-27 19 Humboldt Kneeland Comment
  CAS-BOT-BC486504  Brodiaea stellaris Doris K. Kildale 1925-6-14 681 Humboldt Head of South Yager. bald hills 914 Comment
  HSC81940  Brodiaea terrestris subsp. terrestris D. H. Norris 1985-5-30 Humboldt Near Whitethorn Comment
  CAS-BOT-BC149568  Bromus carinatus var. carinatus Ashley C. Browne 1936-6-11 s.n. Humboldt Patrick's Point State Park. Comment
  UC37587  Bromus carinatus var. carinatus Joseph Burtt Davy 1899-6-21 5725 Humboldt Hupa Valley, Supply Creek Supply Creek; Hupa Valley, Supply Creek Comment
  UC552681  Bromus carinatus var. carinatus Joseph P. Tracy 1935-7-25 14233 Humboldt Trintiy Summit, at McKay Prairie Trintiy Summit; , McKay Prairie 1584 Comment
  HSC76567  Bromus ciliatus Teresa Prendusi 1981-7-24 486 Humboldt Near Whiteys Peak 1585 Comment
  UC1145182  Bromus diandrus Joseph P. Tracy 1950-6-15 18775 Humboldt 5 mi n of Harris (Mail Ridge); Mail Ridge 944 Comment
  BLMAR158  Bromus hordeaceus Donald Hazlett 1994-6-7 158 Humboldt King range, near horse Mt. Ridge rd 670 Comment
  RSA10108  Bromus hordeaceus Joseph P. Tracy 1933-6-25 12622 Humboldt Along Eel River, 2 to 5 miles east of South Fork.Camp Grant. Comment
  UC1103363  Bromus hordeaceus Joseph P. Tracy 1933-6-11 12556 Humboldt 4 mi s of Dyerville (South Fork Eel River); North Coast Ranges, South Fork Eel River 60 Comment
  UCD58714  Bromus hordeaceus A. H. Murphy 1951-6-1 53 Humboldt O. O. Davis Ranch. South slope of South Fork Mtn., 3 miles E of Low Gap. 853 Comment
  RSA126835  Bromus sterilis H. S. Yates 1936-5-17 5714 Humboldt Near Burr valley; South Fork Pk. 915 Comment
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Apr 6 2017
  HSC70926  Bromus tectorum R. York 1980-5-18 577 Humboldt Near Black Mountain 792 Comment
  UC1198280  Cakile edentula Joseph P. Tracy 1946-1-13 17518 Humboldt Centerville Beach 3 Comment
  HSC75234  Cakile edentula D. M. Gordon 1982-9-23 Humboldt Lanphere-Christensen Dunes, 3 mi. W of Arcata. Comment
  CAS-BOT-BC36862  Cakile edentula var. edentula Doris K. Kildale 1926-7-14 2375 Humboldt Trinidad Beach. Comment
  CAS-BOT-BC185236  Calamagrostis koelerioides Henry M. Pollard 1946-8-28 s.n. Humboldt Near summit of Orleans Mountain. 1828 Comment
  HSC103094  Calamagrostis koelerioides Sydney Carothers 2014-7-3 18 Humboldt Six Rivers National Forest, Lassics Botanical Area, Mt. Lassic, upper north slope 1775 Comment
  HSC64325  Calandrinia ciliata J. P. Smith 1970-6-7 3802 Humboldt 0.6 mi. N of Luffenholtz Beach, along Hwy. 101, near Trinidad. Comment
  HSC78988  Calandrinia ciliata L. P. Janeway 1984-4-11 727 Humboldt N Spit of Humboldt Bay, NW of the boat ramp and N of the Coast Guard Station 5 Comment
  UC161051  Calandrinia ciliata Joseph P. Tracy 1904-4-24 2023 Humboldt dunes of beach at Humboldt Bay; Northern Coast Region Comment
  UCR196002  Callitriche heterophylla subsp. bolanderi R. F. Thorne, Percy C. Everett 1965-8-9 35323 Humboldt Northwestern; Outer North Coastal region, Clam Beach County Park, along highway 3 Comment
  CHSC106732  Callitriche heterophylla var. bolanderi Robert F. Thorne; P. Everett 1965-8-9 35323 Humboldt Clam Beach County Park: along highway in shallow water of ditch. 3 Comment
  BLMAR537  Calocedrus decurrens Jennifer Wheeler 2009-6-23 537 Humboldt King range, On King Peak road Comment
  HSC57987  Calocedrus decurrens G. L. Clifton, Griswold 1979-7-31 11728 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1805 Comment
  HSC76318  Calocedrus decurrens Teresa Prendusi 1981-7-9 242 Humboldt Near Slate Creek Butte 1122 Comment
  SEINET4169777  Calochortus catalinae Unknown 1932-7-12 Humboldt Trinity Summit Comment
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Sep 18 2015
  UC667131  Calochortus coeruleus Joseph P. Tracy 1932-7-12 10483 Humboldt Head of Brett Hole Trinity Summit 1828 Comment
  HSC15377  Calochortus tolmiei D. E. Anderson 1965-5-15 3559 Humboldt Along Hwy. 96, 1.9 mi. N of Willow Creek, above Trinity River Comment
  HSC38517  Calochortus tolmiei D. E. Anderson, J. P. Smith 1971-6-18 - 1082 Humboldt Horse Mtn. Comment
  HSC70761  Calochortus tolmiei M. A. Baker 1980-7-19 2994 Humboldt Near Bret Hole. 1814 Comment
  UC1197675  Calochortus tolmiei Joseph P. Tracy 1927-6-12 8148 Humboldt Horse Mountain 1280 Comment
  HSC56155  Caltha leptosepala G. L. Clifton, Griswold 1979-8-1 12016 Humboldt Near N Trinity Mtn., close to the town of Hoopa. 1798 Comment
  CAS-BOT-BC273318  Calycadenia fremontii Joseph P. Tracy 1938-8-14 16117 Humboldt South Fork of Trinity River 304 Comment
  UC750741  Calycadenia fremontii Henry M. Pollard 1945-8-31 Humboldt Orleans to Somes Bar Comment
  UC195065  Calycadenia truncata Joseph P. Tracy 1916-9-5 4755 Humboldt head of Canoe Creek Northern Coast Ranges, Grasshopper Ridge 609 Comment
  CAS-BOT-BC275366  Calycadenia truncata var. truncata Doris K. Kildale 1925-7-4 982 Humboldt Redwood Creek at [Bern?'s] Comment
  HSC36647  Calypso bulbosa J. D. Ackerman 1975-6-4 443 Humboldt 5 mi. E of hwy. 101, on Bald Hills Rd. Redwood Natl. Park 396 Comment
  HSC97493  Calypso bulbosa Cara Witte 2007-5-21 59 Humboldt Board Camp Mountain. Near intersection of Forest Service Road 4N38 and National Forest 1. 1410 Comment
  UCD138888  Calypso bulbosa var. occidentalis Julie Lortz 1966-5-14 66 -51 Humboldt 26 mile east of Willow Creek. 1219 Comment
  UC1197883  Calystegia occidentalis subsp. occidentalis Joseph P. Tracy 1926-5-9 7454 Humboldt near Bridgeville; near Bridgeville 457 Comment
  HSC6361  Calystegia soldanella Francis Winter 1960-5-14 Humboldt Samoa Peninsula, 6 mi. W of Arcata Comment
  RSA296727  Calystegia soldanella J. P. Smith, T. W. Nelson, Smith 1977-6-30 9204 Humboldt Samoa Peninsula just east of the drag strip. Comment
  RSA12420  Camassia leichtlinii subsp. suksdorfii Carl B. Wolf 1934-7-2 5873 Humboldt At small lake at Snow Camp (Mtns E of Korbel) 1372 Comment
  UC162602  Camassia quamash Joseph P. Tracy 1911-7-7 3388 Humboldt 3 mi nw of junction of Willow Creek with Trinity River (and near Beebe's Ranch); Northern Coast Ranges 914 Comment
  CAS-BOT-BC493386  Camassia quamash subsp. linearis Doris Kildale 1931-5-10 10558 Humboldt Snow Camp Comment
  UC1173652  Camassia quamash subsp. quamash Joseph P. Tracy 1937-8-12 15637 Humboldt Snow Camp 1402 Comment
  RSA244988  Camissonia cheiranthifolia subsp. cheiranthifolia Norman Dennis 1965-6-8 104 Humboldt Samoa Peninsula along the W side of the Humboldt Bay. Comment
  CAS-BOT-BC160234  Camissoniopsis cheiranthifolia subsp. cheiranthifolia Peter H. Raven; Richard Snow 1958-7-21 13661 Humboldt Cape Mendocino Comment
  UC602536  Campanula prenanthoides Joseph P. Tracy 1927-8-14 8330 Humboldt Big Lagoon 121 Comment
  POM225298  Campanula prenanthoides P. A. Munz 1936-8-10 14338 Humboldt Little Van Duzen River, 15 miles east of Bridgeville. Comment
  SEINET10462967  Campanula prenanthoides Stephen S. Tillett 1956-7-6 Tillett 612 Humboldt Area cleared by logging and fire, south slope along Bar Shanty Road, 5 miles from Orleans 488 Comment
  SEINET10463306  Campanula prenanthoides Pollard 1948-7-23 POLLARD s.n. Humboldt REECE POINT NEAR ORLEANS Comment
  POM193020  Campanula scouleri M. H. Manning 1901-07 s.n. Humboldt Near Hupa Comment
  SEINET10463566  Campanula scouleri Clifton 1979-7-31 CLIFTON 11815 Humboldt NR TISH TANG A TANG CR., SALMON MT QUAD. NR HOOPA EVERGREEN CONIFER FOREST IN SEEPAGE AREA 1356 Comment
  HSC6630  Capsella bursa-pastoris J. L. Baker 1965-3-26 17 Humboldt 4 mi. N of Arcata on North Bank Rd. Comment
  UC302119  Cardamine angulata Joseph P. Tracy 1926-5-22 7510 Humboldt Prairie Creek Northern Coast Ranges, Prairie Creek 152 Comment
  HSC57312  Cardamine californica Terry Griswold, Marvin Butler 1979-7-10 6318 Humboldt Near Board Camp Mtn., close to the town of Willow Creek 1372 Comment
  HSC59654  Cardamine californica Michael Dalke 1979-4-21 57 Humboldt Lord Ellis Summit area, 1 mi. S of Hwy. 299 640 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
  UCD114184  Cardamine californica Joseph M. DiTomaso 1976-3-28 358 Humboldt just east of summit on Highway 299, 8 miles west of Willow Creek. 762 Comment
  CHSC499  Cardamine californica var. sinuata G. Spurlock 1935-3-9 Humboldt Van Duzen river. 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
  UC492260  Cardamine nuttallii Joseph P. Tracy 1927-6-12 8129 Humboldt Horse Mountain Northern Coast Ranges, Horse Mountain 1524 Comment
  UCD114535  Cardamine oligosperma Linda M. Barker 1976-2-22 1317 Humboldt Lanphere-Christensen Dunes, 3 miles west of Arcata. Comment
  UC1222954  Carduus tenuiflorus Joseph P. Tracy 1942-6-28 17266 Humboldt toward Hungry Hollow Angel's Ranch; Bald Mountain, Hungry Hollow Comment
  UC726350  Carex A. A. Heller 1930-8-4 14995 Humboldt Little River Comment
  UC562652  Carex abrupta Joseph P. Tracy 1932-7-14 10546 Humboldt Corral Prairie Trinity Summit 1584 Comment
  CAS-BOT-BC18518  Carex abrupta Joseph Prince Tracy 1937-7-29 15580 Humboldt South Fork Mountains. McKay Camp. 1676 Comment
  UC585638  Carex arcta Joseph P. Tracy 1937-8-12 15645 Humboldt Snow Camp 1402 Comment
  SEINET10585514  Carex arcta Joseph P. Tracy 1934-7-13 Tracy 13389 Humboldt Dow's Prairie. In sedge swamp with C. exsicata. 61 Comment
  HSC98945  Carex athrostachya Cara Witte 2008-7-25 933 Humboldt Friday Ridge Rd. (6N08). Approximately 1 mile east of intersection with Forest Service Road 5N10. 1325 Comment
  UC562288  Carex barbarae Joseph P. Tracy 1932-6-14 10152 Humboldt Trinity River Valley at Willow Creek 152 Comment
  HSC75485  Carex bolanderi J. O. Sawyer 1980-7-18 3604 Humboldt North Trinity Mountain Research Natural Area, north of Mill Creek Lake to Red Cap Hole. Comment
  SEINET7552610 Image available Carex bolanderi David Castaner 1989-6-19 10248 b Humboldt Fern Canyon. Comment
  CAS-BOT-BC530907  Carex debiliformis H. N. Bolander no date on label 6477 Humboldt Red Mountain 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
  CAS-BOT-BC19861  Carex echinata subsp. echinata Joseph Prince Tracy 1930-7-16 8986 Humboldt North Coast Ranges. South Fork Mountain. At McKay Camp. 1676 Comment
  UC203893  Carex echinata subsp. phyllomanica Joseph P. Tracy 1918-7-21 5083 Humboldt around Humboldt Bay; Northern Coast Ranges, Humboldt Hill 91 Comment
  SEINET7708306 Image available Carex feta J. P. Tracy 1950-7-6 19010 Humboldt Albee Road; Buck Mountain, 3 mi S of Burr Valley Comment
  HSC70468  Carex fracta Gail Newton 1980-7-20 1635 Humboldt Near Bell Swamps 1426 Comment
  CAS-BOT-BC20878  Carex globosa Harold Ernest Parks; Joseph Prince Tracy 1942-5-16 11556 Humboldt Vicinity of Garberville. 152 Comment
  CAS-BOT-BC20874  Carex globosa Joseph Prince Tracy 1932-4-3 9791 Humboldt North Coast Ranges. Englewood. 91 Comment
  UC562625  Carex gynodynama Joseph P. Tracy 1936-6-21 14991 Humboldt Iaqua. Comment
  CAS-BOT-BC22310  Carex harfordii Joseph Prince Tracy 1938-7-18 16083 Humboldt At Eureka. 30 Comment
  CAS-BOT-BC22313  Carex harfordii Joseph Prince Tracy 1935-6-8 13936 Humboldt Eureka. 60 Comment
  UC1103579  Carex harfordii Joseph P. Tracy 1912-7-25 3818 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  JEPS25966  Carex harfordii Joseph P. Tracy 1927-7-17 8279 Humboldt Three Cabins: grassy slopes on lower western foothills of Chaparral Mountain 457 Comment
  UC562719  Carex hassei H. E. Parks and Joseph P. Tracy 1931-5-9 9401 Humboldt vicinity Trinidad; Bishop Pine Lodge 60 Comment
  CAS-BOT-BC35566  Carex jonesii Joseph Prince Tracy 1932-7-15 10573 Humboldt Trinity Summit, at Corral Prairie 1584 Comment
  JEPS26004  Carex lyngbyei Joseph P. Tracy 1938-7-15 16069 Humboldt Mouth of Eel River 3 Comment
  UC194811  Carex lyngbyei Joseph P. Tracy 1915-6-6 4646 Humboldt near mouth Elk River (region about Humboldt Bay); Northern Coast Region 0 Comment
  JEPS79850  Carex mendocinensis Joseph P. Tracy 1935-7-14 14086 Humboldt North Coast Ranges, Grouse Mountain Grouse Mountain; North Coast Ranges, Grouse Mountain 1524 Comment
  HSC102156  Carex microptera M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-3 1064 Humboldt Patterson Meadows 1555 Comment
  HSC63874  Carex microptera M. A. Baker 1979-6-27 921 Humboldt Edge of Hoopa Indian Reservation Comment
  UC1103570  Carex multicaulis Joseph P. Tracy 1919-5-31 5164 Humboldt near Willow Creek (hill slopes at w side of Trinity River); Northern Coast Ranges 152 Comment
  CAS-BOT-BC119542  Carex nudata Doris K. Kildale 1929-5-26 9134 Humboldt Klamath River st Orleans. 152 Comment
  UC194810  Carex nudata Joseph P. Tracy 1915-6-27 4654 Humboldt above Carlotta (Yager Creek) 91 Comment
  CAS-BOT-BC119386  Carex obnupta Doris Kildale Gillespie 1931-6-7 10650 Humboldt South Fork Mt. Blake Lookout. 1726 Comment
  HSC7187  Carex obnupta D. R. Junell 1965-5-2 40 Humboldt 1 mi. S of Fairhaven on Samoa Peninsula Comment
  HSC76818  Carex obnupta L. P. Janeway 1982-6-12 3 Humboldt Dry Lagoon 3 Comment
  JEPS63691  Carex obnupta William S. Cooper 1925-7-29 112 Humboldt Samoa Comment
  RSA246861  Carex obnupta Robert F. Thorne, Percy C. Everett 1965-8-5 35139 Humboldt Mt. Chamisal; Below summit. 534 Comment
  BLMAR237  Carex obnupta Jennifer Anthony-Wheeler 1996-9-26 237 Humboldt King range, growing in wet places in creeksides habitat between Nadelos and Wailaki 548 Comment
  CAS-BOT-BC119381  Carex obnupta Joseph Prince Tracy 1934-7-13 13381 Humboldt Arcata Bottom. 15 Comment
  HSC59577  Carex obnupta Rick Lundquist 1979-5-18 112 Humboldt Clam Beach Ponds 0 Comment
  SEINET7569469 Image available Carex obnupta David Castaner 1989-6-19 10249 Humboldt Fern Canyon. Comment
  RSA88853  Carex ovalis Alice Eastwood, John Thomas Howell 1937-6-23 4790 Humboldt Near Dinsmore s. Comment
  HSC73703  Carex pachystachya M. A. Baker 1980-7-22 3122 Humboldt Near Grogan Hole. 1676 Comment
  HSC98947  Carex pachystachya Cara Witte 2008-7-2 810 Humboldt Forest Service Road 4N38. 2 miles north of intersection to Board Camp Lookout. Near gate. 1401 Comment
  UC194803  Carex pansa Joseph P. Tracy 1911-6-25 3258 Humboldt Eureka Northern Coast Region 0 Comment
  SEINET11635019  Carex pansa L. P. Janeway 1987-1 2537 Humboldt vicinity of Eureka, North Spit of Humbolt Bay near SE corner of Eureka City Airport 3 Comment
  JEPS63535  Carex pellita W. L. Jepson 1932-7-27 16439 Humboldt Weott Comment
  CAS-BOT-BC118598  Carex praticola Joseph Prince Tracy 1914-5-3 4421 Humboldt At Eureka 60 Comment
  JEPS79859  Carex rossii Joseph P. Tracy 1935-6-2 13921 Humboldt Big Lagoon 3 Comment
  CAS-BOT-BC28310  Carex scopulorum var. bracteosa Joseph Prince Tracy 1932-7-17 10675 Humboldt Trinity Summit, Wet meadow heading into Devil's Hole. 1828 Comment
  CHSC102858  Carex subbracteata Peter F. Zika 2009-6-15 24494 Humboldt Outer North Coast Range. Above Route 299, 2.3 road miles W of junction with Chezen Road, between Lord-Ellis and Berry summits. 680 Comment
  HSC103143  Carex subfusca M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-3 1154 Humboldt Patterson Meadows 1555 Comment
  RSA91641  Carex tumulicola Joseph P. Tracy 1932-5-1 9853 Humboldt Grassy open places at Redway. Vicinity of Garberville. 122 Comment
  UC202501  Carex tumulicola Joseph P. Tracy and Ernest B. Babcock 1912-5-11 3591 Humboldt Hydesville Northern Coast Ranges 60 Comment
  CAS-BOT-BC115534  Carex unilateralis Joseph Prince Tracy 1946-5-30 17539 Humboldt Wet gully in grassland near Bridgeville. 457 Comment
  UC562627  Carex unilateralis Joseph P. Tracy 1933-6-9 12539 Humboldt Fortuna 18 Comment
  UC562326  Carex vesicaria var. major Joseph P. Tracy 1927-7-17 8277 Humboldt lower w foothills Chaparral Mountain (Three Cabins); North Coast Ranges 457 Comment
  CAS-BOT-BC281885  Carthamus lanatus T. C. Fuller 1962-8-7 9365 Humboldt Luke's Prairie on ridge 1 mile N above Bull Creek, ca 2 miles W of Dyerville Comment
  CDA6948  Carthamus lanatus T. C. Fuller 1962-8-7 9365 Humboldt Luke s Prairie, on ridge 1 mile north above Bull Creek, ca. 2 miles west of Dyerville. 0 Comment
  CAS-BOT-BC249130  Castilleja affinis Doris K. Kildale 1927-6-26 3597 Humboldt Patrick's [Patricks] Point Comment
  JEPS57402  Castilleja affinis subsp. litoralis L. R. Heckard with T. I. Chuang 1968-7-4 1978 Humboldt 2 mi sw Orick (along Highway 101, at n end of Freshwater Lagoon); Freshwater Lagoon Comment
  JEPS88811  Castilleja affinis subsp. litoralis T. I. and F. M. Chuang 1991-7-8 7874 Humboldt ca 2 mi sw Orick Comment
  UC1196856  Castilleja affinis subsp. litoralis Joseph P. Tracy 1927-8-14 8332 Humboldt n end Big Lagoon (hills) 152 Comment
  CAS-BOT-BC255520  Castilleja applegatei var. pinetorum Clarence R. Quick 1959-7-24 59 -32 Humboldt Bee Mt., ca. 12 miles southwest of Orleans Comment
  UC1222834  Castilleja arachnoidea Joseph P. Tracy 1950-8-8 19296 Humboldt Croghan Hole Trinity Summit (on Trinity Summit) 1676 Comment
  HSC38194  Castilleja attenuata Peter Sorensen 1976-6-4 Humboldt N Spit of Humboldt Bay, S of Samoa near airport Comment
  HSC48266  Castilleja attenuata D. E. Anderson 1965-5-8 3642 Humboldt About 2 mi. N of Willow Creek on road running along E side of Trinity River Comment
  UC1173698  Castilleja attenuata Joseph P. Tracy 1939-4-29 16255 Humboldt Orleans 121 Comment
  HSC72482  Castilleja attenuata J. P. Smith, J. O. Sawyer 1973-5-12 6682 Humboldt 3.3 mi. from Redwood Creek on Hoopa Rd. Comment
  HSC59456  Castilleja exserta subsp. latifolia M. A. Ericksen 1979-5-18 301 Humboldt Samoa Dunes, .5 mi. S of Simpson Timber Company plant entrance Comment
  HSC44563  Castilleja miniata Brad Klipfel 1973-7-15 183 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC35593  Castilleja pruinosa Thomas W. Nelson, Jane P. Nelson, James Nelson 1975-7-15 2004 Humboldt French Camp, Bald Hills. Comment
  JEPS26532  Castilleja pruinosa Joseph P. Tracy Jun 1901 1485 Humboldt Klamath River; North Coast Ranges 426 Comment
  JEPS8622  Castilleja pruinosa Joseph P. Tracy 1926-6-27 7676 Humboldt Horse Mountain; Northern Coast Ranges 1432 Comment
  UC1502106  Ceanothus R. Sutherland 1975-5-13 2 G.13 75 Humboldt Pt. Delgada Quad. 509 Comment
  HSC41322  Ceanothus arcuatus Brad Klipfel 1974-9-2 525 Humboldt Horse Mtn. Comment
  HSC55626  Ceanothus cordulatus Overton, Butler 1979-7-24 9605 Humboldt Near Titlow Hill, close to the town of Willow Creek 1250 Comment
  CDA36149  Ceanothus cuneatus CDFA Staff Jun 1977 Humboldt Berry Summit. 0 Comment
  UC1071074  Ceanothus cuneatus var. cuneatus A. E. Wieslander 1931-5-19 201 Humboldt near Orleans. Hoopa quad., Klamath Nat. For. Comment
  POM203240  Ceanothus foliosus M. S. Jussel 1931-5-1 s.n. Humboldt Garberville. Comment
  HSC37052  Ceanothus incanus R. Sutherland 1975-6-3 1 .3675 Humboldt 396 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
  UC1222620  Ceanothus incanus Joseph P. Tracy 1950-8-4 19249 Humboldt Grasshopper Peak Bull Creek State Park at head of Canoe Creek Comment
  CAS-BOT-BC63725  Ceanothus integerrimus H. E. McMinn 1922-8-5 350 Humboldt Along Van Duzen River. Comment
  HSC98909  Ceanothus integerrimus Cara Witte 2007-6-14 276 Humboldt Along National Forest 1. Near Kinsey Ridge. 2 miles north of intersection with 4N06. 1319 Comment
  SEINET12211379  Ceanothus integerrimus var. californicus F. H. Utech, Sato, T.; Ohara, M. 1990-1 90 -306 Humboldt Six Rivers National Forest, 0.5 mi S of CA 199 on French Hill Rd (USFS Rd 411) 150 Comment
  HSC97918  Ceanothus integerrimus var. integerrimus Cara Witte 2007-6-14 276 Humboldt Along National Forest 1. Near Kinsey Ridge. 2 miles north of intersection with 4N06. 1319 Comment
  HSC37606  Ceanothus oliganthus var. sorediatus R. Sutherland 1975-7-11 7 .11775 Humboldt Along county rd. 259 Comment
  HSC36677  Ceanothus parryi R. Sutherland 1975-5-5 7 .5575 Humboldt Near Ettersburg Rd. 457 Comment
  HSC43211  Ceanothus parryi R. Sutherland 1975-4-4 1 .4475 Humboldt Rd. bank of Perry Meadow Rd. 244 Comment
  UC1193306  Ceanothus parryi K. Cuff 1950-8-24 123 Humboldt 2 mi n Phillipsville; Quad. 29C1, n of Phillipsville 213 Comment
  CAS-BOT-BC52953  Ceanothus thyrsiflorus Doris K. Kildale 1927-5-14 3290 Humboldt Big Lagoon Comment
  CAS-BOT-BC52985  Ceanothus thyrsiflorus L. R. Abrams; J. T. Benson 1924-5-17 10731 Humboldt One mile north of Trinidad Head Comment
  HSC37614  Ceanothus thyrsiflorus R. Sutherland 1975-5-28 6 .28575 Humboldt N Fork of Horse Mtn. Creek 396 Comment
  RSA172184  Ceanothus thyrsiflorus Robert F. Thorne 1957-9-3 19022 Humboldt Patrick's Point State Park. Comment
  UC1193280  Ceanothus thyrsiflorus R. H. Neuns 1950-10-17 142 Humboldt Bear Creek Road 6 mi n Shelter Cove; Quad. 28D4, Bear Creek Rd, n of Shelter Cove 609 Comment
  UC165825  Ceanothus thyrsiflorus Joseph P. Tracy 1909-6-6 2984 Humboldt Eureka 0 Comment
  UC668160  Ceanothus thyrsiflorus Joseph P. Tracy 1935-6-2 13924 Humboldt Big Lagoon 60 Comment
  UC668161  Ceanothus thyrsiflorus Joseph P. Tracy 1937-5-30 15317 Humboldt Bridgeville 198 Comment
  SBBG71387  Ceanothus thyrsiflorus var. thyrsiflorus R. Hartwell 1938-8-6 Humboldt above Arcata, near coast Comment
  HSC100907  Ceanothus velutinus Carl C. Marshall Jun 1886 257 Humboldt Ridges. 915 Comment
  CAS-BOT-BC52409  Ceanothus velutinus var. velutinus C. Hart Merriam 1920-8-31 s.n. Humboldt Coast Mts. between Shelter Cove and Kenny Comment
  JEPS30696  Centaurea X pouzinii T. C. Fuller 1961-9-26 7030 Humboldt 2 mi s of Redcrest; Horse Prairie Comment
  UC1541642  Centaurea melitensis Harold E. Parks 1934-7-6 5117 Humboldt Jaqua-Yager Creek road Jaqua-Yager Creek 762 Comment
  RSA34006  Centaurea melitensis J. Wendell Howe 1933-7-26 s.n. Humboldt Mad River near Blue Lake Comment
  JEPS11983  Centaurium muehlenbergii Rimo Bacigalupi with G. T. Robbins 1954-6-28 4655 Humboldt 4.6 mi s Weitchpec (Hoopa Valley Indian Reservation, along highway, high above Trinity River, between Hoopa Valley and Weitchpec) 167 Comment
  JEPS46936  Centaurium muehlenbergii W. L. Jepson 1927-7-3 12361 Humboldt Meyers road sta South Fork Eel River Comment
  RSA171942  Centaurium muehlenbergii Robert F. Thorne 1957-9-2 18993 Humboldt Burlington State Park, just S of Weott. Comment
  UC1198630  Centaurium muehlenbergii Joseph P. Tracy 5208 Humboldt near Willow Creek; Northern Coast Ranges, Trinity River Valley 152 Comment
  HSC40125  Cephalanthera austiniae Thomas W. Nelson, James Nelson 1976-7-28 3070 Humboldt Along small creek E of old road from Goat Mountain lookout to branch road of FS 2S08 N of Alder Springs. 1555 Comment
  JEPS64308  Cephalanthera austiniae Milo S. Baker 1923-7-26 110 Humboldt head of S. Fork Yager Creek on Mt. West; , S. Fork Yager Creek 822 Comment
  UC8232  Cerastium arvense H. N. Bolander 1867-1 6520 Humboldt E. Fork Eel R. Comment
  UC1198316  Cerastium glomeratum Joseph P. Tracy 1921-4-24 5443 Humboldt Phillipsville Flat Northern Coast Ranges, S. Fork Eel R., Phillipsville Flat 91 Comment
  HSC100708  Cerastium pilosum Carl C. Marshall Jun 1888 61 Humboldt No data. Comment
  RSA2940  Cercis occidentalis Carl B. Wolf 1931-8-31 2380 Humboldt West side of South fork of Trinity River, 1 mi. above its mouth. Comment
  UC673250  Cercis occidentalis Lincoln Constance and Reed C. Rollins 1942-5-12 2895 Humboldt bluffs at junction of Klamath River and Salmon River (1 mi s of Somes Bar); Klamath-Siskiyou Region 152 Comment
  CAS-BOT-BC85655  Chamaecyparis lawsoniana Doris K. Kildale 1927-7-3 3640 Humboldt Willow Creek Flat 152 Comment
  HSC56952  Chamaecyparis lawsoniana Overton, Butler 1979-7-23 9456 Humboldt Near Horse Mtn. Mine, close to the town of Willow Creek 1295 Comment
  HSC99051  Chamaecyparis lawsoniana Cara Witte 2008-6-27 772 Humboldt Waterhole off Forest Service Road 5N10. Approximately 2 miles east of intersection with National Forest 1. 1365 Comment
  UC199010 Image available Chamaesyce serpyllifolia Chesnut and Drew 1888-7-23 Humboldt Hy-am-pum Comment
  CAS-BOT-BC166038  Chamerion angustifolium subsp. circumvagum Henry M. Pollard 1946-8-28 s.n. Humboldt Near summit of Orleans Mt. 1828 Comment
  CAS-BOT-BC166040  Chamerion angustifolium subsp. circumvagum Peter H. Raven; R. Snow 1958-7-21 13651 Humboldt 2.9 miles south of Ferndale on road to Cape Mendocino Comment
  HSC48701  Chamerion angustifolium subsp. circumvagum Brad Klipfel 1973-7-31 258 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC55201  Cheilanthes gracillima Overton 1979-8-1 12308 Humboldt Near Mill Cr., close to the town of Hoopa 1402 Comment
  HSC82123  Cheilanthes gracillima Thomas W. Nelson 1979-7-11 4997 Humboldt N Trinity Mtn. and ridge to E. 1829 Comment
  UC197915  Cheilanthes gracillima Joseph P. Tracy 1912-7-26 3841 Humboldt Kneeland Prairie; Northern Coast Ranges 762 Comment
  RSA273388  Chenopodium botrys Thomas W. Nelson, Jane P. Nelson 1977-9-3 3724 Humboldt Along Forest Service Rd. to north of Alder Springs. 1524 Comment
  UC179956  Chenopodium murale Joseph P. Tracy 1914-6-26 4519 Humboldt Eureka Northern Coast Region 0 Comment
  UCD98340  Chenopodium murale Joseph P. Tracy 1948-1-11 17949 Humboldt Eureka. 30 Comment
  UC205454  Chenopodium pumilio Joseph P. Tracy 1919-9-13 5200 Humboldt Willow Creek Northern Coast Ranges (near mouth, tributary of Eel River) 152 Comment
  SD40327  Chenopodium strictum var. glaucophyllum Edith A. Purer 1932-7-30 4670 Humboldt South of Orick Comment
  HSC102586  Chimaphila menziesii M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-29 1573 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1579 Comment
  HSC76590  Chimaphila menziesii Denis Kearns 1981-7-24 448 Humboldt Near Whiteys Peak. 1768 Comment
  RSA43898  Chimaphila menziesii H. M. Pollard 1948-7-31 s.n. Humboldt Orleans Mt. 1524 Comment
  CAS-BOT-BC451382  Chimaphila menziesii Doris K. Kildale 1926-6-27 2188 Humboldt Sweasey Lake, McClellen Mountain 822 Comment
  HSC48860  Chimaphila umbellata Brad Klipfel 1973-7-31 251 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC48861  Chimaphila umbellata Brad Klipfel 1973-7-31 243 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 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
  UC404019  Chlorogalum pomeridianum var. pomeridianum P. E. Goddard 1901-7 11 Humboldt Hupa Comment
  CAS-BOT-BC236918  Chloropyron maritimum subsp. palustre Joseph P. Tracy 1938-7-15 16064 Humboldt At Fields Landing, around Humboldt Bay 3 Comment
  CAS-BOT-BC36484  Chrysolepis chrysophylla Doris K. Kildale 1927-2-22 2978 Humboldt Kneeland Prairie junction of old road Comment
  RSA20963  Chrysolepis chrysophylla Carl B. Wolf 1937-9-13 9338 Humboldt North Coast Range, summit of Grouse Mt. 1645 Comment
  JEPS37866  Chrysolepis chrysophylla var. chrysophylla W. L. Jepson 1902-6 2150 Humboldt near McKee's Comment
  UC1224690  Chrysosplenium glechomifolium D. E. Anderson 1964-4-12 2974 Humboldt small creek leading into Jacoby Creek (on n side of road) Comment
  RSA183599  Cinna latifolia D. E. Anderson 1965-9-5 4085 Humboldt Along Mad river, ca. 3 miles south of Blue Lake 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
  UC562520  Circaea alpina subsp. pacifica Joseph P. Tracy 1934-7-18 13459 Humboldt Grouse Mt. North Coast Ranges, Grouse Mt. 1524 Comment
  BLMAR594  Circaea alpina subsp. pacifica Jennifer Wheeler 2010-7-28 594 Humboldt Lacks Creek, off Pine Ridge Road under shady old growth Douglas-fir 975 Comment
  UC505099  Circaea alpina subsp. pacifica Joseph P. Tracy Jul 16 1930-Jul 19 1930 8927 Humboldt near McKay Camp (S. Fork Mt.); Northern Coast Ranges, S. Fork Mt. 1676 Comment
  UC34640  Cirsium arvense Chesnut and Drew 1888-8-10 Humboldt Arcata Comment
  UCR48593  Cirsium arvense R. D. Goeden, Don W. Ricker 1987-9-2 870902- 15 Humboldt North Coast, Loleta, at bay on Cannibal Road 3 Comment
  CAS-BOT-BC284404  Cirsium arvense L. R. Abrams 1927-8-31 12059 Humboldt Arcata Comment
  POM289622  Cirsium arvense Lyman Benson 1929-7-12 1789 Humboldt Weott Ranger Station. S Fork Eel River. Comment
  SD113204  Cirsium arvense Darley F. Howe 1959-8-4 2800 Humboldt 78.5 miles west of Weavervilleon. Comment
  UC169293  Cirsium brevistylum Joseph P. Tracy 1912-7-14 3748 Humboldt at Eureka Northern Coast Region, Eureka 0 Comment
  UC175439  Cirsium occidentale var. candidissimum Joseph P. Tracy 1912-7-26 3854 1/2 Humboldt Kneeland Prairie North Coast Ranges, Kneeland Prairie 762 Comment
  HSC94090  Cirsium occidentale var. venustum B. Villegas 1998-8-5 Humboldt Nr. Berry Summit on Titlow Hill Rd, 3.9 mi. S of Hwy. 299 Comment
  UC668206  Cirsium remotifolium Joseph P. Tracy 1938-7-6 16025 Humboldt Big Lagoon 30 Comment
  RSA0070877  Cirsium remotifolium Joseph P. Tracy 1949-8-11 18472 Humboldt East of headwaters of Redwood Creek, beginning where the electric power line crosses, and working south. Kinsey Ridge, south from Grouse Mt., 2 to 6 miles. 1280 Comment
  JEPS59184  Cirsium remotifolium var. odontolepis W. L. Jepson 1902-8-3 2139 Humboldt Bear River Range to Bear River (hills overlooking ocean); Bear River Range 152 Comment
  UC91789  Cirsium remotifolium var. odontolepis W. W. Price 1890-7-3 Humboldt Comment
  RSA18145  Cirsium vulgare C. B. Wolf 1927-8-22 803 Humboldt Big Lagoon. Comment
  UCD130811  Cirsium vulgare Linda M. Barker 1976-8-24 1684 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  RSA418966  Cirsium vulgare Lyman Benson 1928-7-12 417 Humboldt Weott Ranger Station, Seaward N. Coast Mt. Range, South Fork Eel River Watershed. 61 Comment
  JEPS43549  Clarkia amoena subsp. amoena W. L. Jepson 1902-8-3 2141 Humboldt near Capetwon; Bear River 182 Comment
  RSA226613  Clarkia amoena subsp. amoena Norman Dennis 1965-6-19 133 Humboldt 1/4 mile S and 1 mile E of the jct of Barry Ridge Road and the Eureka-Bridgeville country road, along Ashfield Ridge Road, 5 miles SE of Kneeland. 793 Comment
  UC204004  Clarkia amoena subsp. amoena Joseph P. Tracy 1918-7-3 4989 Humboldt Wilder Ridge Northern Coast Ranges, Kings Peak Range 762 Comment
  JEPS43630  Clarkia amoena subsp. huntiana W. L. Jepson 1902-7-29 2126 Humboldt Three Creeks to Willow Creek (summit of grade) 1066 Comment
  CAS-BOT-BC164180  Clarkia concinna Harley P. Chandler 1901-6-1 1325 Humboldt Hupa Indian Reservation 152 Comment
  LA206350  Clarkia gracilis subsp. gracilis H. Lewis; M. Lewis 1947-6-13 420 Humboldt highway 36, 2.3 mi. E of S Fork of Van Duzen River (Bridge 4-119) Comment
  UC183693  Clarkia gracilis subsp. sonomensis Joseph P. Tracy 1913-6-11 4091 Humboldt lower foothills on nw slope Buck Mountain; Northern Coast Ranges 762 Comment
  POM214926  Clarkia purpurea subsp. purpurea Joseph P. Tracy 1932-6-26 10264 Humboldt North Coast Ranges: Valley of South Yager Creek 762 Comment
  UC144078  Clarkia purpurea subsp. quadrivulnera Joseph P. Tracy 1909-7-31 3030 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  UC314618  Clarkia purpurea subsp. quadrivulnera Joseph P. Tracy 1923-7-4 6527 Humboldt Valley of South Yager Creek Northern Coast Ranges 762 Comment
  JEPS43741  Clarkia purpurea subsp. viminea Lincoln Constance 1934-5-23 619 Humboldt upper end Look Prairie; Bull Creek Region, South Fork Eel River 365 Comment
  HSC67184  Claytonia exigua subsp. exigua Thomas W. Nelson, James Nelson 1980-6-10 5435 Humboldt Along E side of Red Mtn. 1372 Comment
  HSC17755  Claytonia exigua subsp. exigua D. E. Anderson 1963-5-19 2467 Humboldt About 1 mi. S of Kneeland school Comment
  UC494115  Claytonia exigua subsp. glauca H. E. Parks and J. P. Tracy 1930-5-26 878 Humboldt Laribee Valley Comment
  HSC90228  Claytonia perfoliata L. Watson, J. Meninga Mar 1991 15 Humboldt Near Manila, Mad River slough and dunes, SW edge of parking lot. Comment
  CAS-BOT-BC440093  Claytonia perfoliata subsp. perfoliata J. H. Thomas 1949-6-13 922 Humboldt Along Klamath River, about 1 mile north of town of Orleans. Comment
  UC672998  Claytonia rubra subsp. rubra Joseph P. Tracy 1933-6-13 12579 Humboldt near summit road from Hoopa westward to Bair's; Hoopa Mountain 1066 Comment
  HSC71826  Claytonia saxosa Thomas W. Nelson, Jane P. Nelson 1980-6-27 5957 Humboldt Saddle between Mt. Lassic and peak to E 1677 Comment
  CAS-BOT-BC443887  Claytonia sibirica Henry M. Pollard 1946-8-11 s.n. Humboldt Perch Creek, Orleans region Comment
  HSC17722  Claytonia sibirica D. E. Anderson 1963-9-29 2835 Humboldt Fish Lake Comment
  HSC48843  Claytonia sibirica Brad Klipfel 1973-7-15 199 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  UC162974  Claytonia sibirica Joseph P. Tracy 1907-5-1 2557 Humboldt Eureka; Northern Coast Region 0 Comment
  UCD20385  Claytonia sibirica K. Esau 1935-5-22 s.n. Humboldt Fort Seward. Comment
  UCD100893  Claytonia sibirica D. Sanchez-Mata; S. Rivas-Martinez, M. Costa and M. Ladero 1998-6-10 s.n. Humboldt Trinidad-Klamath Glenn. Prairie Creek State Park. Prairie Creek Trail. 125 Comment
  CHSC42782  Clintonia andrewsiana R. N. Raynor 1935-5-22 Humboldt Ft. Seward. Comment
  HSC15450  Clintonia andrewsiana Francis Winter 1960-4-23 Humboldt 1.0 mi W of Angel Ranch on Korbel-Maple Creek Rd. 244 Comment
  RSA39092  Clintonia andrewsiana Philip A. Munz 1948-8-15 12359 Humboldt Van Duzen Redwood State Park. Comment
  SEINET12046245  Clintonia andrewsiana K. S. Erdman 1970-1 4796 Humboldt Cal-Barrow Road, 3mi E of US101 at boundary of Prairie Creek State Park (Redwood National Park) Comment
  HSC100555  Clintonia uniflora Carl C. Marshall Jun 1886 316 Humboldt Trail E of Hoopa. Comment
  HSC58065  Clintonia uniflora G. L. Clifton, Griswold 1979-8-1 11943 Humboldt Near Mill Creek Lakes, close to the town of Hoopa. 1692 Comment
  JEPS25054  Collinsia bartsiifolia var. bartsiifolia Joseph P. Tracy 1919-5-31 5140 Humboldt near Willow Creek; Northern Coast Ranges, Trinity River Valley 152 Comment
  RSA127485  Collinsia grandiflora Milo S. Baker 1946-6-15 11481 Humboldt Horse Mt. Road at Ski Lodge. 1220 Comment
  UC198607  Collinsia grandiflora Joseph P. Tracy 1913-1 4777 Humboldt at Dinsmore's (in Van Duzen Valley); North Coast Ranges 762 Comment
  HSC56411  Collinsia greenei Griswold, Butler 1979-7-11 7045 Humboldt Near Twin Lakes, close to the town of Willow Creek 1417 Comment
  UC147862  Collinsia greenei Joseph P. Tracy 1908-6 9840 Humboldt nw slope Buck Mtn; Northern Coast Ranges, Buck Mtn 1219 Comment
  HSC89590  Collinsia heterophylla M. Roantree 1985-5-24 58 Humboldt S of Trinidad Head summit near cross Comment
  UC582454  Collinsia linearis Joseph P. Tracy 1934-7-18 13418 Humboldt North Coast Ranges, Grouse Mountain Grouse Mountain; North Coast Ranges, Grouse Mountain 1524 Comment
  CAS-BOT-BC412799  Collinsia linearis David D. Keck 1948-7-2 5999 Humboldt Ridge east of Redwood Creek on road to Willow Creek. On US Route 299 609 Comment
  BLMAR629  Collinsia parviflora Jennifer Wheeler 2011-6-15 629 Humboldt Lacks Creek, Pine Ridge Road 1097 Comment
  UC582463  Collinsia parviflora Joseph P. Tracy Jul 16 1930-Jul 19 1930 8959 Humboldt near McKay Camp (Northern Coast Ranges, South Fork Mountain); Northern Coast Ranges, South Fork Mountain 1676 Comment
  UC604633  Collinsia parviflora Joseph P. Tracy 1938-6-13 15922 Humboldt Grouse Mountain, at Cold Springs Cold Springs; Grouse Mountain, Cold Springs 1432 Comment
  HSC44554  Collinsia torreyi Brad Klipfel 1973-7-15 173 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  SBBG6896  Collinsia torreyi var. torreyi H. and M. Dearing 1939-6-21 3688 Humboldt E fork of Willow Crk Comment
  HSC98863  Collomia grandiflora Cara Witte 2008-8-5 985 Humboldt Buck Flat. Intersection of National Forest 1 and Forest Service Road 5N01. 1569 Comment
  SBBG29130  Collomia heterophylla H. E. Parks -May-1933 1152 Humboldt Spruce Cove, Trinidad 76 Comment
  UC879765  Collomia heterophylla Elizabeth Parsons Hawver 1915-6-1 Humboldt Carlotta Comment
  JEPS71046  Collomia heterophylla Lincoln Constance 1934-5-24 628 Humboldt forest bordering e side lower Look Prairie; Bull Creek Area 45 Comment
  HSC70702  Collomia tracyi Gail Newton 1980-7-15 1550 Humboldt Near Sims Mtn. 1311 Comment
  HSC97106  Collomia tracyi Yun Chan, Renee Meyer, Sophary Yun 2007-6-11 6 Humboldt 14.1 mi. S of Hwy. 299 on FS Rd. NF1 1364 Comment
  JEPS109809  Collomia tracyi Dean W. Taylor 2004-6-24 19133 Humboldt Horse Mountain, along Titlow Hill Road 0.4 miles north from the junction with the road to the mountain summit 1310 Comment
  JEPS26237  Collomia tracyi Joseph P. Tracy 1939-8-16 16420 Humboldt Grouse Mountain 1524 Comment
  UC1222614  Conium maculatum Joseph P. Tracy 1950-6-8 18768 Humboldt near Petrolia (Hills between town and ocean) Comment
  HSC38916  Conium maculatum J. P. Smith 1973-5-26 6794 Humboldt Scotia Bluffs along the Eel River near Rio Dell Comment
  HSC90254  Conium maculatum Jean Hanson 1980-5-24 80 Humboldt Indian (Gunther) Island, in Humboldt Bay, city of Eureka. W end of island, 40 ft from SW shore Comment
  JEPS47868  Convolvulus arvensis Lincoln Constance 1934-5-27 692 Humboldt Dyerville Bridge South Fork Eel River, Bull Creek Region (gravel bar of river at s end) 45 Comment
  UC1199443  Conyza floribunda Joseph P. Tracy 1929-10-13 8679 Humboldt Carlotta 60 Comment
  HSC104334  Coptis laciniata James Regan, Humboldt Redwood Co., LLC 2009-4-1 33 Humboldt Snow Camp Rd., Bald Mtn. Creek Comment
  RSA246762  Corallorhiza maculata Robert F. Thorne, Percy C. Everett 1965-8-5 35135 Humboldt Mt. Chamisal: below summit. 747 Comment
  UC14983  Corallorhiza maculata J. Burtt Davy and W. C. Blasdale 1899-6-18 5622 Humboldt Bald Mt. Comment
  HSC16586  Corallorhiza maculata Doris K. Kildale 1926-5-2 1845 Humboldt Bald Mtn. road, between Bald Mtn. House and junction of Redwood Creek Road. Comment
  UCD138919  Corallorhiza maculata Kenneth D. Stewart 1965-7-13 s.n. Humboldt U.S. Highway 299, ca. 20 miles east of Blue Lake. Comment
  JEPS6805  Cordylanthus tenuis subsp. viscidus Joseph P. Tracy 1939-8-16 16418 Humboldt Grouse Mountain 1524 Comment
  UC205481  Cornus glabrata Joseph P. Tracy 1919-9-14 5210 Humboldt at Lack Pond (Trinity R. Valley near Willow Creek); Northern Coast Ranges, Trinity R. Valley 152 Comment
  HSC38082  Cornus nuttallii Thomas W. Nelson, James Nelson 1976-5-30 2625 Humboldt McKeown Ranch, N of Dinsmore. Comment
  HSC6407  Cornus nuttallii Jack Rockwell 1962-4-29 43 Humboldt E bank of Redwood Creek, near Hwy. 299 549 Comment
  RSA167408  Cornus nuttallii Joseph P. Tracy 1950-10-7 19384 Humboldt Trinity River Valley, at Willow Creek. Comment
  RSA46900  Cornus nuttallii Doris K. Kildale 1925-8-13 1134 Humboldt Willow Creek, bank of Trinity River. 152 Comment
  UC1196901  Cornus nuttallii Joseph P. Tracy 1935-4-20 13786 Humboldt Trinity R. Valley at Willow Creek; Trinity R. Valley 152 Comment
  UC1196911  Cornus nuttallii Joseph P. Tracy 1908-6-9 2675 Humboldt Kneeland Prairie Northern Coast Ranges, Kneeland Prairie 762 Comment
  CAS-BOT-BC212130  Cornus sericea H. E. McMinn 1922-8-5 348 Humboldt Along Van Duzen River Comment
  HSC40243  Cornus sessilis J. P. Smith, J. O. Sawyer 1976-5-2 8619 Humboldt 3.7 mi. N of junction with Hwy. 299 on Hwy. 96 61 Comment
  UC54931  Corylus californica P. E. Goddard 1901-7-12 73 Humboldt Hupa Comment
  UC902053  Corylus californica Joseph P. Tracy 1949-8-11 18486 Humboldt 1 1/2 mi SE of Snow Camp 1341 Comment
  HSC37416  Corylus cornuta subsp. californica Gary S. Lester, Roger L. Yearout, Judith G. Dickson 1974-7-24 509 Humboldt Along Lost Man Creek. 38 Comment
  HSC76056  Corylus cornuta subsp. californica Overton, Butler 1979-8-2 12590 Humboldt Near Bret Hole, close to the town of Hoopa 1554 Comment
  HSC98546  Corylus cornuta var. californica Cara Witte 2007-5-26 652 Humboldt 3/4 mile south of Titlow Hill. 1422 Comment
  UCR32167  Corylus cornuta var. californica David J. Keil 1983-7-2 17312 Humboldt c. 4 mi SE of SR 299 along Titlow Hill Rd below Horse Mountain Summit Road Comment
  RSA34307  Cotula australis C. Kistner 1935-5-15 s.n. Humboldt Arcata Bottom. Comment
  UC249632  Crassula connata var. erectoides Joseph P. Tracy 1921-4-24 5445 Humboldt Phillipsville Flat Northern Coast Ranges, S. Fork Eel R., Phillipsville Flat 91 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-BC291483  Crepis capillaris Joseph P. Tracy 1948-9-26 18299 Humboldt Fickle Hill, 6 miles southeast of Arcata 609 Comment
  CAS-BOT-BC291486  Crepis capillaris H. E. Parks 1941-8-1 24189 Humboldt Vicinity of Trinidad Comment
  CDA4431  Crepis capillaris T. C. Fuller 1958-6-17 597 -58 Humboldt Wildcat Ridge near Bunker Hill. 0 Comment
  UC1223028  Crepis occidentalis Joseph P. Tracy 1951-6-26 19575 Humboldt Twin Lakes vicinity Comment
  HSC71588  Crepis pleurocarpa M. A. Baker 1980-6-26 2393 Humboldt Near Sims Creek 610 Comment
  JEPS37502  Crepis pleurocarpa Joseph P. Tracy 1935-7-28 14332 Humboldt Brett Hole Trinity Summit (head) 1828 Comment
  CAS-BOT-BC290908  Crepis setosa Joseph P. Tracy 1947-7-13 17769 Humboldt Hors-Linto [Horse Linto] Creek 152 Comment
  RSA201792  Crocidium multicaule Roman Gankin, W. R. Hildreth 1966-3-15 700 Humboldt On serpentine slopes of Klamath River canyon, State Highway 96, 4.6 miles north of Hoopa. Comment
  HSC98635  Croton setiger Cara Witte 2008-8-16 1031 Humboldt Along National Forest 1. On Kinsey Ridge. 1336 Comment
  UC526751  Crypsis vaginiflora Joseph P. Tracy 1932-9-3 10762 Humboldt Alton to Fortuna; Northern Coast Region, Eel River 15 Comment
  HSC32316  Cryptantha affinis D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5656 Humboldt Senteney Rock, a large barren Franciscan Rock along Swayback Ridge. Comment
  HSC57947  Cryptantha affinis G. L. Clifton, Griswold 1979-7-31 11623 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1719 Comment
  HSC40851  Cryptantha affinis Thomas W. Nelson 1976-7-9 2998 Humboldt Along W side of ridge S of E peak of Lassic Mtn., (Signal Peak). 1524 Comment
  UC1239662  Cryptantha affinis Joseph P. Tracy 1935-7-23 14130 Humboldt Corral Prairie Klamath Mountains, Trinity Summit 1524 Comment
  UC32552  Cryptantha flaccida Hy-Am Pum Jul 1888 Humboldt Comment
  JEPS67872  Cryptantha torreyana Joseph P. Tracy 1921-6-19 5841 Humboldt along road between Three Creeks and Mouth of Willow Creek; Northern Coast Ranges 762 Comment
  HSC70813  Cryptogramma acrostichoides Gail Newton 1980-7-24 1779 Humboldt Near Somes Mtn. 1615 Comment
  UC162944  Cupressus lawsoniana Joseph P. Tracy 1911-7-6 3341 Humboldt mountain slopes along road between Three Creeks and Mouth of Willow Creek; Northern Coast Ranges 762 Comment
  JEPS43034  Cuscuta californica Lincoln Constance 1934-6-15 883 Humboldt Summit of Grasshopper Peak South Fork Eel River, Bull Creek Region, Grasshopper Peak 975 Comment
  UC906745  Cuscuta californica Joseph P. Tracy 1941-8-28 17047 Humboldt near Blake lookout; Northern Coast Ranges, South Fork Mountain 1706 Comment
  UC902076  Cuscuta occidentalis Joseph P. Tracy 1949-8-4 18407 Humboldt Mud Springs Trinity Summit 1341 Comment
  SEINET943401  Cuscuta occidentalis Joseph P. Tracy 1949-1 18408 Humboldt Trinity Summit, Mud Springs, in serpentine area. 1341 Comment
  RSA249509  Cuscuta salina R. F. Thorne, P. C. Everett 1965-8-8 35280 Humboldt N edge of Eureka, E of Hwy 101. 3 Comment
  CAS-BOT-BC190223  Cynodon dactylon Henry M. Pollard 1948-7-18 s.n. Humboldt Orleans. Comment
  JEPS39358  Cynoglossum grande Lincoln Constance 1934-6-7 831 Humboldt Bull Creek Region, S. Fork Eel R., Johnson Prairie Comment
  UCD119159  Cynoglossum grande D. W. Cooper 1971-5-11 s.n. Humboldt On Charles Moore's ranch on Kneeland Ridge, ca. 10 miles east of Eureka. Comment
  HSC45506  Cynoglossum grande M. Alcasas 1978-4-7 5 Humboldt Freshwater Rd. cut-out 75 yds. S of junction with Barry Rd. 854 Comment
  UCD60130  Cynosurus cristatus Peter H. Raven; R. Snow 1958-7-21 13657 Humboldt 2 miles north of Cape Mendocino. Comment
  HSC26617  Cynosurus echinatus J. P. Smith, Steve Selva 1970-6-14 3827 Humboldt Along Hwy. 96 at Whitmore Creek. 152 Comment
  UC1145090  Cynosurus echinatus Joseph P. Tracy 1941-6-29 16920 Humboldt McClellan Mt. 762 Comment
  UCD60186  Cynosurus echinatus Joseph P. Tracy 1950-6-23 18865 Humboldt Dobbyn Creek, 3 miles northeast of Alderpoint. 213 Comment
  HSC45552  Cyperus eragrostis J. P. Smith 1971-10-9 4990 Humboldt Mad River above the Fish Hatchery. Comment
  POM89790  Cyperus erythrorhizos Joseph P. Tracy 1920-8-15 5364 Humboldt Klamath River, at mouth of Bluff Creek 152 Comment
  SEINET200970  Cyperus melanostachyus Joseph P. Tracy 1920-8-15 5383 Humboldt Klamath River at Bluff Creek. 152 Comment
  HSC74128  Cystopteris fragilis R. York 1980-5-23 621 Humboldt Near Buck Mtn. 1524 Comment
  CAS-BOT-BC70552  Cystopteris fragilis Arnold Tiehm 2000-8-30 13381 Humboldt Santa Rosa Range, Buckskin Mountain Comment
  SEINET12152438  Cytisus scoparius J. P. Tracy 1950-1 18830 Humboldt Eureka Comment
  HSC9539  Dactylis glomerata E. W. Styskel 1963-5-16 25 Humboldt 3.0 mi. SE of Korbel on Snow Camp Rd. 290 Comment
  SEINET4565919  Dactylis glomerata J. B. Davy 1899-6-16 5557 Humboldt Scotia Comment
  UC184968  Danthonia californica Joseph P. Tracy 1908-6-9 2673 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  UCD60489  Danthonia californica Joseph P. Tracy 1938-6-17 15951 Humboldt Cape Mendocino. 152 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
  UCD60503  Danthonia californica var. americana R. Tofsrud 1947-6-27 s.n. Humboldt About halfway between Yager and Kneeland on county road. Comment
  JEPS49584  Darmera peltata W. L. Jepson 1902-6-30 1958 Humboldt Redwood Creek; Berry's Ranch Comment
  RSA520566  Datisca glomerata M. Hanson 1990-5-22 84 Humboldt In the Trinity River, 75 meters E of the Hwy 96 bridge N of Hoopa. 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
  HSC59680  Daucus carota George Kirn 1977-10-1 Humboldt Eureka, open bayfront field 1/2 mi E of Hwy 255 6 Comment
  SEINET5744809 Image available Daucus carota Lowell E. Urbatsch, Patricia B. Cox; Alan W. Lievens 1988-1 6111 Humboldt Collected in a waste area along Giuntoli Lane in Arcata. Adjacent to Eureka Sand and Gravel company and across the road from T.P. Tire Service (1265 Giuntoli Lane).; Arcata Comment
  JEPS15997  Daucus pusillus W. L. Jepson 1932-7-24 16387 Humboldt Mail Ridge Comment
  HSC104060  Daucus pusillus M. F. Norman 2015-4-11 13 Humboldt Arcata, Ma-le'l Dunes Comment
  HSC78607  Daucus pusillus L. P. Janeway, Paul Wilson 1984-5-7 767 Humboldt N Spit of Humboldt Bay, just behind foredunes near 'Flag 1 3 Comment
  UC503025  Delphinium Joseph P. Tracy 1932-5-10 9934 Humboldt Bear River Ridge Northern Coast Ranges 609 Comment
  CAS-BOT-BC26626  Delphinium decorum subsp. tracyi J. P. Tracy 1930-5-25 6789 Humboldt Laribee Valley 914 Comment
  UC427876  Delphinium decorum subsp. tracyi H. E. Parks and J. P. Tracy 1930-5-25 789 Humboldt Laribee Valley 914 Comment
  HSC36240  Delphinium decorum subsp. tracyi John Rehling 1975-5-12 71 Humboldt Bald Hills Area, 2 mi. up Williams Ridge Rd. Comment
  UC183075  Delphinium decorum subsp. tracyi Joseph P. Tracy 1913-6-17 4148 Humboldt Burr Valley Northern Coast Ranges, Buck Mountain (nw slope of mt.) 1066 Comment
  HSC95728  Delphinium nudicaule Steven Lee 2004-4-26 30 Humboldt Horse Mtn., 4 mi. up Titlow Hill Rd. from Hwy. 299 Comment
  HSC98172  Delphinium nudicaule Allan R. Marshall 1962-5-11 9 Humboldt 50 yds. in front of N side of Hwy. 299 610 Comment
  RSA20971  Delphinium trolliifolium Carl B. Wolf 1937-6-14 8827 Humboldt Kneeland Prairie; North Coast Range. 823 Comment
  UC1196343  Delphinium trolliifolium Joseph P. Tracy 1908-6 2774 Humboldt opposite Buck Mountain; Northern Coast Ranges, valley of Van Duzen River 762 Comment
  HSC36241  Delphinium trolliifolium John Rehling 1975-5-12 72 Humboldt 4 mi. S of Orick on Hwy. 101 Comment
  HSC99633  Delphinium trolliifolium Allan R. Marshall 1962-5-11 10 Humboldt 50 yds. in front of N side of Hwy. 299 610 Comment
  CAS-BOT-BC194298  Deschampsia cespitosa subsp. cespitosa David D. Keck 1938-8-5 4773 Humboldt Big Lagoon Comment
  SEINET3927645  Deschampsia danthonioides Joseph P. Tracy 1950-6-25 18901 Humboldt West side of Buck Mt. 3 miles south of Burr Valley.; 0 1219 Comment
  UC1103220  Deschampsia danthonioides Joseph P. Tracy 1912-7-31 3896 Humboldt n.w. slope Buck Mt.; Northern Coast Ranges, Burr Valley, Buck Mt. 1066 Comment
  UC183580  Deschampsia danthonioides Joseph P. Tracy 1912-7-25 3832 Humboldt Kneeland Prairie Northern Coast Ranges, Kneeland Prairie 762 Comment
  POM365046  Deschampsia elongata Henry M. Pollard 1948-7-26 s.n. Humboldt Near mouth of Camp Creek- near Orleans. Comment
  UC1103214  Deschampsia elongata J. P. Tracy 1900-7-4 874 Humboldt sand hills of Ocean Beach at Samoa; , Ocean Beach Comment
  UC1198795  Descurainia incana Joseph P. Tracy 1935-7-22 14128 Humboldt Corral Prairie Trinity Summit (along trail) 1584 Comment
  HSC41656  Descurainia sophia Karen Lu 1977-10-30 Humboldt Lanphere Rd., Arcata, 0.25 mi. E of the bridge over Mad River Slough Comment
  HSC22512  Dicentra formosa G. N. Bos 1965-5-2 236 Humboldt 5 mi. E of Korbel on Bald Mtn. Rd. 732 Comment
  UC35058  Dicentra formosa Chesnut and Drew 1888-7-21 Humboldt South Fork Mt. Comment
  UCD170583  Dicentra formosa Gordon Leppig 1998-3-27 730 Humboldt Quarry Rd. off Jacoby Creek. Under Jacoby Creek Bridge. 97 Comment
  RSA92450  Dichanthelium acuminatum var. fasciculatum Joseph P. Tracy 1931-5-17 9427 Humboldt Trinity River Valley, at Willow Creek 152 Comment
  SEINET12058487  Dichelostemma capitatum F. H. Utech 1988-5-23 88 -291 Humboldt 1.5 mi N of Bridgeville on Road from Bridgeville to Kneeland, along Brown Creek 350 Comment
  UC1222683  Dichelostemma capitatum Joseph P. Tracy 1951-5-20 19404 Humboldt toward Ashfield Butte; Kneeland Prairie Comment
  HSC97477  Dichelostemma capitatum subsp. capitatum Cara Witte 2007-5-21 65 Humboldt White Oak Opening. 1257 Comment
  UC1198183  Dichelostemma ida-maia Joseph P. Tracy 1927-8-14 8329 Humboldt Big Lagoon 152 Comment
  CAS-BOT-BC501020  Dichelostemma ida-maia D. E. Breedlove 1961-7-4 649 Humboldt 10.9 miles west of Willow Creek on US 299 822 Comment
  JEPS5678  Dichelostemma ida-maia Milo S. Baker 1923-7-28 139 Humboldt South Fork Yager Creek Comment
  SEINET3885615  Dichelostemma ida-maia Jan G. Cooper 1976-8-2 5 Humboldt Along road to Horse Mountain Ski area turnoff of Hwy 299.; 0 1219 Comment
  HSC38524  Dichelostemma multiflorum D. E. Anderson, J. P. Smith 1971-6-18 - 1072 Humboldt Chezem Rd., about 3 mi. E of bridge over Redwood Creek Comment
  CHSC1743  Digitalis purpurea M. Anthony 1960-5-14 Humboldt N. of Arcata, Highway 101. Comment
  POM273545  Digitalis purpurea Lyman D. Benson 1929-7-19 1879 Humboldt Mouth of Matole [Mattole] River. Comment
  UC1409176  Dipsacus fullonum Robert F. Thorne and P. Everett 1965-8-9 35282 Humboldt 2.5 mi n Arcata Comment
  SEINET4170364  Disporum smithii Bassett Maguire, Ruth Maguire, C. B. Maguire 1934-6-8 15086 Humboldt Under Redwood, Bolling Grove State Park Comment
  CAS-BOT-BC208659  Distichlis spicata Malcom A. Nobs; S. Galen Smith 1949-8-3 1178 Humboldt Salt marshes around Fields Landing Comment
  SEINET201055 Image available Dodecatheon alpinum Joseph P. Tracy 1932-7-14 10565 Humboldt Trinity Summit, Corral Prarie. 1585 Comment
  HSC30147  Dodecatheon hendersonii A. M. Montalvo, J. D. Ackerman 1974-4-14 173 Humboldt Near Gray's Falls, Trinity River. Gray's Falls Campground Comment
  HSC82394  Dodecatheon jeffreyi Thomas W. Nelson 1979-7-11 5007 Humboldt N Trinity Mtn. and ridge to E. 1829 Comment
  UC673096  Downingia elegans Joseph P. Tracy 1940-7-7 16673 Humboldt Grouse Mt. 1554 Comment
  POM256487  Downingia elegans var. corymbosa Joseph P. Tracy 1930-6-15 8739 Humboldt Larrabee Creek, near Bosworth's; North Coast Ranges. 457 Comment
  UCD55079  Downingia willamettensis Rachel Foster 1970-1 F70- 96 -11 Humboldt Hydesville. Adjacent to Hydesville School. Comment
  HSC44732  Drosera rotundifolia Maralyn O'Meara 1971-10-25 55 Humboldt S side of Big Lagoon Comment
  CAS-BOT-BC401534  Drosera rotundifolia Carl B. Wolf 1927-8-1 s.n. Humboldt Marsh near Eureka Comment
  HSC44528  Drymocallis lactea var. lactea Brad Klipfel 1973-7-1 136 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  UC42173  Dryopteris arguta C. C. Marshall 46 Humboldt Hoopa Valley Comment
  SEINET6424295 Image available Dryopteris dilatata Hicks, Carpenter 1977-7-12 Humboldt Prairie Creek State Park Comment
  JEPS4047  Dryopteris expansa Roland A. Dede 1952-12-6 2834 Humboldt Ferndale Comment
  UCSB30621  Dryopteris expansa Edwards, David 1974-9-2 Humboldt ca. 5ft N of dirt road, ca. 350 ft from its junction with Fickle Hill Rd., Arcata. 106 Comment
  CAS-BOT-BC428055  Dudleya cymosa subsp. cymosa Elizabeth Parsons Hawver 1915-6-1 s.n. Humboldt Carlotta Comment
  SEINET5227018 Image available Dysphania botrys Unknown 2002-8-17 81 Humboldt On gravel bar in Eel River, 10 miles S of Garberville onHwy 101, at Benbow Drive. Comment
  HSC97534  Echinochloa crus-galli Ivy Watson 2008-9-11 7 Humboldt Blue Lake, 300m downstream of the Hatchery Rd. bridge, N bank. 20 Comment
  UCD60816  Echinochloa crus-galli Joseph P. Tracy 1938-8-14 16115 Humboldt Trinity River Valley, near the South Fork. 182 Comment
  CAS-BOT-BC112839  Eleocharis macrostachya David Daniels Keck 1938-8-5 4768 Humboldt Big Lagoon, on shore in drying clay mud. Comment
  POM87948  Eleocharis palustris Le Roy Abrams 8267 Humboldt Big Lagoon, south of Orick. Comment
  UC526784  Elymus X hansenii Joseph P. Tracy Jul 16 1930-Jul 19 1930 9054 Humboldt along summit near Blake lookout; Northern Coast Ranges, South Fork Mountain 1737 Comment
  HSC58665  Elymus elymoides var. elymoides G. L. Clifton, Griswold 1979-8-1 12052 Humboldt Near High Spring, close to the town of Hoopa. 1798 Comment
  UC1103204  Elymus glaucus Joseph P. Tracy 1908-6 2856 Humboldt opposite Buck Mountain; Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  SEINET200644  Elymus glaucus subsp. jepsonii J. P. Tracy 1933-8-6 12950 Humboldt French Camp Ridge 0 Comment
  HSC16340  Epilobium brachycarpum D. E. Anderson 1961-9-23 1833 Humboldt 2.3 mi. S of Kneeland corner Comment
  HSC54564  Epilobium brachycarpum Overton, Butler 1979-7-24 9583 Humboldt Near Titlow Hill, close to the town of Willow Creek. 1250 Comment
  HSC54703  Epilobium ciliatum Overton, Butler 1979-7-26 10026 Humboldt Near White Rock Spring, close to the town of Willow Creek 1554 Comment
  HSC74754  Epilobium ciliatum subsp. ciliatum Gail Newton 1981-8-6 2398 Humboldt Near Humbug Creek 1256 Comment
  HSC76188  Epilobium ciliatum subsp. ciliatum Overton, Butler 1979-7-24 9781 Humboldt Near Black Rock, close to the town of Willow Creek 1463 Comment
  HSC43272  Epilobium ciliatum subsp. ciliatum R. Sutherland 1976-8-6 16 .6876 Humboldt 223 Comment
  UCD20169  Epilobium ciliatum subsp. glandulosum J. M. Tucker 1948-9-3 1858 Humboldt Clear Lake, near junction of Friday Ridge Road and Horse Mountain-Grouce Mountain Road. Comment
  UC198605  Epilobium densiflorum Joseph P. Tracy 1917-9-3 4852 Humboldt Janes Ranch Northern Coast Ranges, Grouse Mt. (lower w slopes of mt.) 914 Comment
  SEINET200781  Epilobium foliosum Joseph P. Tracy 1930-6-21 8786 Humboldt Northern Coast Ranges; Larrabee Valley 701 Comment
  RSA12421  Epilobium hallianum Carl B. Wolf 1934-7-2 5872 Humboldt At edge of small lake at Snow Camp. (Mts. east of Korbel). 1372 Comment
  RSA181876  Epilobium hallianum Joseph P. Tracy 1930-7-16 8977 Humboldt Northern Coast Ranges: South Fork Mountain; in wet meadow at McKay Camp 1677 Comment
  HSC98840  Epilobium minutum Cara Witte 2008-7-11 877 Humboldt Spike Buck Mountain. Forest Service Road 5N18. 0.5 mi. from intersection with National Forest 1. 1589 Comment
  HSC49630  Epilobium minutum Thomas W. Nelson, Jane P. Nelson 1977-5-30 3401 Humboldt Mckeown Ranch N of Dinsmore, Mad River 610 Comment
  POM225521  Epilobium minutum P. A. Munz 1936-8-13 14382 Humboldt 10 miles west of Willow Creek. Comment
  UC1198495  Epilobium torreyi Joseph P. Tracy 8744 Humboldt near Bosworth's; Northern Coast Ranges, Larrabee Creek 457 Comment
  HSC44045  Equisetum arvense Thomas W. Nelson, Jane Nelson 1977-7-1 3551 Humboldt Along N side of ridge between Bear and Blanket Creeks. 1494 Comment
  HSC99486  Equisetum arvense K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-14 145 Humboldt Near North Trinity Mtn, 11. 9 mi east of Hoopa on Big Hill Rd (8N01), at Box Camp, Six Rivers National Forest. 1372 Comment
  HSC98608  Equisetum arvense Cara Witte 2008-6-15 737 Humboldt National Forest 1. 1.5 miles north of intersection with Forest Service Road 6N01B. 1487 Comment
  HSC46006  Equisetum hyemale subsp. affine J. P. Smith 1971-10-9 4996 Humboldt Banks and flood plain of the Mad River above the fish hatchery. Comment
  UC62558  Equisetum hyemale subsp. affine P. E. Goddard July 1901 88 Humboldt Hupa Comment
  HSC100383  Equisetum telmateia Carl C. Marshall Apr 1886 174 Humboldt Everywhere. Comment
  CHSC24858  Equisetum telmateia subsp. braunii M. B. Simpson 1976-4-10 25 Humboldt Ca. 100 yds e of West Haven Dr, on n side of Wagon Wheel Rd, ca. 13 mi n of Arcata. 121 Comment
  HSC70639  Equisetum telmateia subsp. braunii R. York 1980-5-18 594 Humboldt Near Black Mtn 792 Comment
  CAS-BOT-BC204430  Eragrostis cilianensis Henry M. Pollard 1944-9-1 s.n. Humboldt Near Orleans Comment
  UC1145099  Eragrostis mexicana subsp. virescens Joseph P. Tracy 1950-9-22 19372 Humboldt 8 mi below Orleans; Klamath River near Slate Creek 121 Comment
  UC212870  Eragrostis pilosa var. pilosa Joseph P. Tracy 1920-8-15 5361 Humboldt mouth of Bluff Creek (Klamath R.); Northern Coast Ranges, Klamath R. 152 Comment
  CAS-BOT-BC291175  Erechtites glomeratus Alice Eastwood 1923-8-14 12319 Humboldt Samoa Comment
  HSC5490  Erechtites glomeratus H. E. Parks Aug 1941 24189 Humboldt Trinidad Comment
  SD40100  Erechtites prenanthoides Edith A. Purer 1932-7-30 4684 Humboldt South of Orick Comment
  HSC41178  Ericameria nauseosa var. speciosa Robert M. Specht 1976-8-22 539 Humboldt ca. 3.95 mi. S of Hwy. 299 on Titlow Hill Rd. to Horse Mtn. Comment
  UC1223016  Erigeron aliceae Joseph P. Tracy 1950-7-31 19237 Humboldt top of Grouse Mountain 1524 Comment
  HSC98529  Erigeron aliceae Cara Witte 2007-6-13 265 Humboldt Along Forest Service Rd. 5N04. Near Grouse Mountain 1538 Comment
  SEINET11855650  Erigeron decumbens var. robustior J. P. Tracy 1942-7-4 17370 Humboldt Buck Mountain, lower foothills of its NW slope 762 Comment
  CAS-BOT-BC296111  Erigeron foliosus var. confinis Joseph P. Tracy 1935-6-23 13967 Humboldt French Camp Ridge 1066 Comment
  CAS-BOT-BC296116  Erigeron foliosus var. confinis Doris K. Kildale 1928-7-1 5665 Humboldt Klamath River at Bluff Creek Comment
  HSC96452  Erigeron foliosus var. confinis Thomas W. Nelson, R. K. Brummitt, Barbara Ertter 2004-7-4 9283 Humboldt Along Bald Hills Rd. near French Camp, 1.5 mi. from Johnson Rd. and Elk Camp fire station. Comment
  UC1223006  Erigeron foliosus var. mendocinus Joseph P. Tracy 1951-7-24 19625 Humboldt Blue Slide on Van Duzen River Van Duzen River, Blue Slide 91 Comment
  BLMAR715  Erigeron glaucus Jennifer Anthony-Wheeler 1995-4-4 715 Humboldt King range, growing on beach dunes S of 1st arch fence exclosure 6 Comment
  HSC59670  Erigeron glaucus George Kirn 1977-9-27 Humboldt 0.5 mi. NW of Samoa 8 Comment
  UC1223136  Erigeron inornatus var. inornatus Joseph P. Tracy 1949-8-11 18483 Humboldt 3 mi se of Snow Camp (at Twin Lakes); Twin Lakes 1463 Comment
  HSC58125  Erigeron klamathensis Gilbert Muth 1979-8-1 12111 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1878 Comment
  HSC70979  Erigeron klamathensis Gail Newton 1980-7-22 1667 Humboldt Near Devils Backbone 1554 Comment
  UC87680  Erigeron maniopotamicus J. W. Blankinship 1893-7-1 Humboldt Mad River Comment
Read comments
Sep 3 2011
  CAS-BOT-BC214588  Erigeron philadelphicus L. R. Abrams 1922-6-25 8225 Humboldt 6 mi north of Garberville Comment
  JEPS41364  Erigeron philadelphicus var. philadelphicus Joseph P. Tracy 1912-6-9 3651 Humboldt Alton Northern Coast Region, Alton 30 Comment
  UC202679  Erigeron philadelphicus var. philadelphicus Chesnut and Drew 1888-7-19 Humboldt Pilot Ridge Comment
  UC34302  Erigeron philadelphicus var. philadelphicus W. C. Blasdale 1896-6-3 Humboldt Blue Lake Comment
  UCD20387  Erigeron philadelphicus var. philadelphicus K. Esau 1935-5-22 s.n. Humboldt Fort Seward. Comment
  UC468821  Erigeron robustior Joseph Burtt Davy and Walter C. Blasdale 1899-6-11 5429 Humboldt near Hubbards Comment
  HSC48395  Eriodictyon californicum Brad Klipfel 1973-6-10 149 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC55092  Eriogonum compositum G. L. Clifton, Griswold 1979-7-31 11779 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa. 1845 Comment
  CAS-BOT-BC259163  Eriogonum latifolium Carl B. Wolf 1937-9-12 9331 Humboldt Clam Beach 7 Comment
  HSC17292  Eriogonum latifolium D. E. Anderson 1962-7-4 2248 Humboldt Luffenholtz Beach 5 mi. S of Trinidad along old Hwy. 101, 2 mi. N of mouth of Little River Comment
  POM180649  Eriogonum latifolium Mildred E. Mathias 1929-8-4 770 Humboldt Along the coast near Eureka. Comment
  UC203954  Eriogonum latifolium Joseph P. Tracy 1918-7-1 4974 Humboldt 3 mi s Point of the Cape; Cape Mendocino 3 Comment
  HSC98381  Eriogonum luteolum var. luteolum R. Sutherland 1976-8-24 6 .24876 Humboldt 543 Comment
  UC176709  Eriogonum luteolum var. luteolum Joseph P. Tracy 1912-8-3 3968 Humboldt opposite Buck Mountain; Valley of Van Duzen River 762 Comment
  CAS-BOT-BC261498  Eriogonum nudum var. nudum L. R. Abrams 1916-7-11 6003 Humboldt Between Blocksberg and Bridgeville Comment
  HSC103088  Eriogonum nudum var. nudum Sydney Carothers 2014-6-22 5 Humboldt Six Rivers National Forest, Lassics Botanical Area; on saddle between Peak 1 and Mt. Lassic 1796 Comment
  HSC98531  Eriogonum nudum var. nudum Cara Witte 2007-7-8 445 Humboldt Board Camp Mountain. Trail 4E28. 1496 Comment
  JEPS56635  Eriogonum nudum var. nudum Lincoln Constance 1934-5-24 626 Humboldt s slope of Lower Look Prairie South Fork Eel River, Bull Creek Region, Lower Look Prairie 121 Comment
  RSA21586  Eriogonum nudum var. nudum Carl B. Wolf 1937-8-13 9231 Humboldt North coast range, 8 mi. east of Hoopa Valley on new road towards Trinity summit. 1220 Comment
  UC144102  Eriogonum nudum var. oblongifolium Joseph P. Tracy 1909-8-1 3058 Humboldt Kneeland Prairie Northern Coast Ranges, Kneeland Prairie 762 Comment
  BLMAR664  Eriogonum nudum var. oblongifolium Jennifer Wheeler 2012-7-10 664 Humboldt King range, Trail to Mackey allotment, along gravely dry slopes 609 Comment
  SD22498  Eriogonum nudum var. oblongifolium Susan G. Stokes 1932-7-12 Humboldt Near Garberville Comment
  UC14096  Eriogonum roseum Chesnut and Drew 1888-7-25 Humboldt Hy-Am-Pum Comment
  SEINET244744 Image available Eriogonum umbellatum James L. Reveal 2001-7-18 8345 Humboldt Along U.S. Forest Service Road 1 at south end of Whiting Ridge, about 0.5 air miles west-northwest of High Salt Ground and 9.3 air miles west of Hyampom. 1295 Comment
  UC55394  Eriogonum umbellatum var. dumosum P. E. Goddard 1901-7-10 55 Humboldt Hupa Comment
  HSC31448  Eriophorum crinigerum D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-13 5566 Humboldt Lower slopes of Black Lassic near Trinity Co. line 1585 Comment
  CAS-BOT-BC301007  Eriophyllum lanatum var. achilleoides Lincoln Constance; Reed C. Rollins 1942-5-12 2886 Humboldt Klamath--Siskiyou Region. Mouth of Bluff Creek, 6 miles northeast of Weitchpec 152 Comment
  HSC44132  Eriophyllum lanatum var. achilleoides Thomas W. Nelson, Jane P. Nelson 1977-7-4 3586 Humboldt Along W side of road N of Alder Springs, head of N Fork of Conley Creek 1280 Comment
  HSC97922  Eriophyllum lanatum var. achilleoides Cara Witte 2007-6-19 299 Humboldt Cold Spring. 1/2 mile south of Titlow Hill. 1393 Comment
  UC90307  Eriophyllum lanatum var. achilleoides W. W. Price 1890-7-1 Humboldt Mad River Comment
  UC34551  Eriophyllum lanatum var. achilleoides Chesnut and Drew 1888-7-12 Humboldt Jarnigan's Comment
  BLMAR631  Eriophyllum lanatum var. arachnoideum Jennifer Wheeler 2011-6-15 631 Humboldt Lacks Creek, Bair road Comment
  CAS-BOT-BC301177  Eriophyllum lanatum var. arachnoideum Joseph P. Tracy 1927-7-4 8231 Humboldt Iaqua 609 Comment
  UC582673  Eriophyllum staechadifolium Joseph P. Tracy 1935-7-18 14101 Humboldt Hillside facing ocean on Table Bluff 30 Comment
  UC1198963  Erodium botrys Joseph P. Tracy 1913-6-27 4353 Humboldt McClellan Mt., on the Sweasey place Northern Coast Ranges 609 Comment
  HSC89896  Erodium cicutarium Leonel Arguello 1989-6-2 Humboldt Lanphere-Christensen Dunes Preserve 3 mi. W of Arcata, end of Fernstrom-Root trail Comment
  SEINET12118220  Eryngium aristulatum J. P. Tracy 1912-1 3777 & 4001 Humboldt Alton 91 Comment
  HSC85898  Erysimum capitatum var. capitatum Barry Silver 1986-4-23 528 Humboldt 9.5 mi. NW of junction with Hwy. 299, Pine Ridge Summit area 945 Comment
  UC1199174  Erysimum menziesii Joseph P. Tracy 1918-5-5 4920 Humboldt sand dunes of Ocean Beach (Humboldt Bay); Northern Coast Region, , Ocean Beach Comment
Read comments
Apr 21 2012
  HSC44353  Erythronium californicum Brad Klipfel 1974-5-8 319 Humboldt Horse Mountain Comment
  UC1197648  Erythronium californicum Joseph P. Tracy 1927-6-12 8127 Humboldt Horse Mountain Northern Coast Ranges 1524 Comment
  JEPS503  Erythronium grandiflorum Joseph P. Tracy 1933-7-16 12774 Humboldt near McKay Camp; South Fork Mountain 1676 Comment
  UC666961  Erythronium grandiflorum Joseph P. Tracy 1933-7-11 12708 Humboldt Grouse Mountain 1524 Comment
  HSC104422  Erythronium grandiflorum Sydney Carothers 2004-5-31 42 Humboldt Grouse Mountain; back side of Grouse Mtn., slope above Forest Service Rd. 5NO4, below summit 1610 Comment
  HSC70227  Erythronium grandiflorum subsp. grandiflorum M. A. Baker 1980-6-8 1890 Humboldt Near Buck Flat. 1554 Comment
  HSC38258  Erythronium revolutum Thomas W. Nelson 1976-4-3 2283 Humboldt Hwy 36 at east end of Swain's Flat Comment
  CAS-BOT-BC403032  Eschscholzia californica Carl B. Wolf 1937-6-14 8824 Humboldt North Coast Range, Kneeland Prairie 822 Comment
  JEPS51802  Eschscholzia californica Joseph P. Tracy 1933-7-16 12793 Humboldt South Fork Mt. North Coast Ranges (top of w slope, near county line) 1676 Comment
  HSC69578  Eucalyptus globulus R. Kalal 1980-6-1 7 Humboldt City of Arcata, along F street between 12th and 13th streets. 37 Comment
  JEPS22186  Eucephalus ledophyllus Joseph P. Tracy 1932-7-15 10601 Humboldt ridges e of Corral Prairie; Trinity Summit 1828 Comment
  HSC44570  Eucephalus ledophyllus var. ledophyllus Brad Klipfel 1973-7-15 189 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC45078  Euchiton gymnocephalus R. Sutherland 1978-4-24 6 .24478 Humboldt Kinsey Ridge above Oat Creek. 396 Comment
  UC1223111  Euchiton sphaericus Joseph P. Tracy 1947-9-28 17933 Humboldt Park's place Trinidad 3 Comment
  UC1199005  Euonymus occidentalis var. occidentalis Joseph P. Tracy 1906-6-10 2473 Humboldt headwaters of Freshwater Creek near Kneeland Prairie; Northern Coast Ranges, Freshwater Creek 457 Comment
  UC165814  Euonymus occidentalis var. occidentalis Joseph P. Tracy 1911-6-4 3232 Humboldt along Little R. 5 mi. from coast Little R.; Northern Coast Region, Little R. 121 Comment
  SEINET10971171  Eupatorium occidentale Mary Susan Taylor 1980-6-11 Taylor 2844 Humboldt Gray Falls Campground, Six Rivers Natl Forest, on W side of Rd 6N56 to foot bridge, on N side of Hwy 299, ca. 2 mi NW of Burnt Ranch. 274 Comment
  UC302052  Euphorbia peplus Joseph P. Tracy 1926-5-15 7473 Humboldt Eureka; North Coast Ranges 0 Comment
  HSC31736  Euphorbia peplus Donald Spalinger 1974-4-20 16 Humboldt Across from 1756 Ridgewood Dr. 122 Comment
  HSC5091  Eurybia radulina H. E. Parks, J. P. Tracy 1930-9-15 769 Humboldt Kneeland Bald Hills Comment
  SEINET3244015  Euthamia occidentalis S. K. Harris, Charlotte Wilder 1938-1 879 Humboldt Bars of the Van Dusen River, above Blue Slide. Comment
  CAS-BOT-BC413855  Fallopia sachalinensis T. C. Fuller 1960-8-25 4973 Humboldt W/Hwy 101, 1/4 mile N/Humboldt Hill Rd., Eureka Comment
  HSC9819  Festuca arundinacea E. W. Styskel 1964-4-28 74 Humboldt End of Davis St. at edge of Eel River in Rio Dell. Comment
  UC34071  Festuca californica J. P. Tracy 1901-6-23 1175 Humboldt immediate vicinity Eureka 0 Comment
  HSC9852  Festuca californica D. C. Juve 1964-5-16 36 Humboldt Campbell Cr. Ranger Station. Hwy. 96. Hillside above Trinity River Comment
  UCD65870  Festuca californica subsp. californica P. B. Kennedy 1923-8-2 Humboldt Near grade Bluff Creek to Arcata. Comment
  HSC31216  Festuca idahoensis D. E. Anderson 1972-6-20 5732 Humboldt Along the Redwood Valley-Hoopa Rd., E of the summit. Comment
  RSA10135  Festuca idahoensis Joseph P. Tracy 1933-7-25 12890 Humboldt Grouse Mountain, North Coast Ranges 1524 Comment
  UC535634  Festuca idahoensis Joseph P. Tracy 1932-7-12 10447 Humboldt Corral Ranch Klamath Mountains, Trinity Summit 1524 Comment
  HSC63851  Festuca occidentalis M. A. Baker 1979-6-29 963 Humboldt Hopkin's Creek. 750 Comment
  HSC90075  Festuca occidentalis Sam Stroich Jr., Rolf Miller, Brian Pereira 1990-4-28 50 Humboldt Hwy. 299, 4 mi. W of Burnt Ranch, Grey Falls campground 396 Comment
  HSC9974  Festuca rubra D. J. Wilder 1965-4-25 11 Humboldt 4 mi. from Arcata on Fickle Hill Rd. Comment
  RSA256294  Festuca rubra J. R. Reeder, C. G. Reeder 1973-5-26 6185 Humboldt Ca. 2 miles S of Orick in Humboldt State Park. Comment
  UCD66433  Festuca subulata R. Tofsrud 1947-7-1 198 Humboldt Between Alder Point and Zenia. Comment
  UC38427  Festuca subuliflora J. P. Tracy May 1901 1184 Humboldt Humboldt Bay North Coast Ranges 30 Comment
  UC205480  Foeniculum vulgare Joseph P. Tracy 1919-9-14 5221 Humboldt Trinity R. Valley near Willow Creek; Northern Coast Ranges, Trinity R. Valley 152 Comment
  RSA183617  Fragaria californica D. E. Anderson 1965-5-1 3558 Humboldt Along Hwy. 96, 1.9 mi. N of Willow Creek. Comment
  CAS-BOT-BC453516  Fragaria chiloensis W. R. Dudley 1899-6-1 s.n. Humboldt Pennisula of Eureka Comment
  HSC62777  Fragaria chiloensis M. Dean Griswold Jr. 1979-4-28 27 Humboldt N of NE boundary of Big Lagoon County Park Comment
  HSC90467  Fragaria chiloensis Jean Hanson 1980-3-8 30 Humboldt Indian (Gunther) Island, in Humboldt Bay. W end of island, 200 ft. from SW shore Comment
  UC1198724  Fragaria chiloensis Joseph P. Tracy 1918-5-5 4922 Humboldt Ocean Beach Humboldt Bay Comment
  CAS-BOT-BC457923  Fragaria vesca subsp. californica Doris K. Kildale 1926-3-23 1613 Humboldt Alton Hill Comment
  HSC72613  Frangula californica subsp. occidentalis J. P. Smith 1977-7-3 9261 Humboldt Six Rivers National Forest. FS Rd. 13N01, 3 mi. from its junction with Hwy. 36 549 Comment
  HSC95924  Frangula purshiana subsp. purshiana Will Ferrand 2001-6-17 18 Humboldt 9 mi. E of intersection of West End Rd. and Warren Creek Rd. 67 Comment
  HSC15537  Fritillaria affinis D. E. Anderson 1965-5-8 3635 Humboldt 4 mi. E of Berry Summit along Hwy. 299 Comment
  UC1197634  Fritillaria affinis Joseph P. Tracy 1919-4-27 5127 Humboldt Ocean Beach at Humboldt Bay Ocean Beach; Northern Coast Region, Humboldt Bay, Ocean Beach Comment
  SEINET255379  Fritillaria lanceolata Joseph P. Tracy 1913-6-20 4228 Humboldt Lower foothills of Buck Mountain, on its NW slope. 762 Comment
  CHSC80006  Fumaria officinalis Gordon Leppig; Sylvia Leppig 2000-12-7 1523 Humboldt Arcata, 7th and I Street just west of Post Office, UTM zone 10, 4525N, 408E. 6 Comment
  UC275325  Fumaria officinalis Joseph P. Tracy 1924-5-17 6679 Humboldt Eureka; Northern Coast Ranges 0 Comment
  HSC102052  Galium aparine M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-13 957 Humboldt Forest edge surrounding Patterson Meadows 1566 Comment
  UC175780  Galium bifolium Joseph P. Tracy 1912-7-31 3923 Humboldt near summit Northern Coast Ranges, Buck Mountain 1676 Comment
  HSC71791  Galium bolanderi Gail Newton 1980-6-16 179 Humboldt Near Monks Camp. 1097 Comment
  JEPS6719  Galium bolanderi Joseph P. Tracy 1935-7-29 14339 Humboldt near Ranger Station; Trinity Summit 1828 Comment
  HSC19797  Galium bolanderi Lauramay T. Dempster, G. L. Stebbins 1963-7-9 3853 Humboldt 1/2 mi. E of Dinsmore on Hwy. 36 732 Comment
  UC1196089  Galium bolanderi Joseph P. Tracy 1933-7-9 12642 Humboldt Willow Creek Trinity River Valley 152 Comment
  UC416634  Galium bolanderi Harley P. Chandler 1901-6-12 1452 Humboldt Bluff Creek North Coast Ranges, Klamath River 304 Comment
  RSA47104  Galium californicum Doris K. Kildale 1925-7-19 1053 Humboldt Bridgeville. 290 Comment
  JEPS52855  Galium californicum subsp. californicum Lauramay T. Dempster and G. L. Stebbins 1963-7-10 3864 Humboldt 4.2 mi e Garberville (on road to Harris, at crest of ridge) 640 Comment
  UC602540  Galium californicum subsp. californicum Joseph P. Tracy 1927-5-30 8085 Humboldt between Briceland and Redway 182 Comment
  UC602528  Galium muricatum Joseph P. Tracy 1934-7-22 13488 Humboldt North Yager Creek 396 Comment
  UC602541  Galium parisiense Joseph P. Tracy 1913-6-10 4083 Humboldt below Bridgeville (on river); Northern Coast Ranges, Van Duzen River, Rogers Ranch 152 Comment
  JEPS52748  Galium porrigens var. porrigens Lauramay T. Dempster and G. L. Stebbins 1963-7-10 3863 Humboldt 4.2 mi n Redway (along US 101, w-facing slope above Eel River) 91 Comment
  JEPS52974  Galium porrigens var. porrigens Lauramay T. Dempster and Jean Colton 1963-8-7 3888 Humboldt e Shelter Cove Comment
  HSC90645  Galium trifidum Gail Newton 1982-6-1 3570 Humboldt Elk River Wildlife Area, Eureka. Comment
  UC1196080  Galium trifidum Joseph P. Tracy 1903-8-9 1944 Humboldt Eureka Northern Coast Region 0 Comment
  HSC40955  Galium triflorum Linda M. Barker 1976-7-5 1649 Humboldt 3 mi. W of Arcata. Comment
  HSC98710  Galium triflorum Cara Witte 2007-7-20 562 Humboldt Board Camp Butte. Forest Serivce Road 4E27. 1460 Comment
  SEINET12335256  Galium triflorum F. H. Utech, Sato, T.; Ohara, M. 1990-1 90 -278 Humboldt Humboldt Redwoods State Park, Jensen Grove 50 Comment
  CAS-BOT-BC303390  Gamochaeta ustulata Joseph P. Tracy 1936-5-30 14834 Humboldt Near Samoa, on Humboldt Bay 6 Comment
  CAS-BOT-BC200580  Garrya buxifolia Joseph P. Tracy 1935-7-14 14062 Humboldt Horse Mountain 1432 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
  HSC76357  Garrya buxifolia Denis Kearns 1981-7-6 47 Humboldt Near Mosquito Lake 1122 Comment
  SEINET12137511  Garrya elliptica M. S. Taylor 1982-1 5181 Humboldt Samoa, under bridge, ca 1 mi NW of Eureka Comment
  HSC33149  Garrya fremontii Thomas W. Nelson, J. Cole, Brad Klipfel 1974-5-8 1247 Humboldt Horse Mtn. area, E of microwave tower 1220 Comment
  HSC8394  Garrya fremontii J. Wendell Howe Apr 1931 102 Humboldt Kneeland Prairie Comment
  HSC98881  Garrya fremontii Cara Witte 2008-7-2 800 Humboldt National Forest Road 1; 5 miles south of intersection with 5N04. Before cattle guard crossing. 1406 Comment
  HSC99050  Garrya fremontii Cara Witte 2008-6-18 750 Humboldt Horse Mountain Botanical Area. Approximately 1 mile east of junction 6N36 and 6N36A. 1394 Comment
  UC668300  Garrya fremontii Joseph P. Tracy 1935-7-14 14062 Humboldt Horse Mountain 1432 Comment
  UCD66724  Gastridium phleoides S. S. Tillett 1956-7-6 609 Humboldt S. slope along Bar Shanty Road, 5 mi. from Orleans. 487 Comment
  UC1173684  Gaultheria ovatifolia Joseph P. Tracy 1939-7-9 16320 Humboldt Bald Mountain, at Lake Prairie Bald Mountain; , Lake Prairie 1066 Comment
  HSC31810  Gaultheria shallon Steve Selva, Roger Jensen 1974-8-21 26 Humboldt Redwood grove adjacent to Hwy. 101 rest stop, ca. 3 mi. N of Trinidad Comment
  HSC73457  Gaultheria shallon Grunert 38 Humboldt Jolly Giant Creek, Arcata city limit, on Jolly Giant Rd. near HSU Comment
  UCD20676  Gaultheria shallon A. T. Leiser 1980-7-8 s.n. Humboldt Humboldt County, Redwood National Park, Burm Creek. Comment
  UCR275108  Gaultheria shallon Charity A. Hartshorn 2016-5-14 34 Humboldt Arcata Community Forest 244 Comment
  HSC102921  Gayophytum M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 1015 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  UC505108  Gayophytum diffusum subsp. parviflorum Joseph P. Tracy Jul 16 1930-Jul 19 1930 9069 Humboldt near McKay Camp; Northern Coast Ranges, South Fork Mountain 1676 Comment
  HSC55166  Gayophytum ramosissimum Gilbert Muth 1979-8-1 12157 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1677 Comment
  JEPS47046  Gentiana affinis var. ovata Joseph P. Tracy 1933-10-1 13078 Humboldt Big Lagoon 91 Comment
  JEPS47039  Gentiana affinis var. ovata W. L. Jepson 1936-8-18 17941 Humboldt s of Eel River mouth; Wildcat Ridge Comment
  UC1198639  Gentiana affinis var. ovata Joseph P. Tracy 1913-9-9 4401 Humboldt prairies at s end Big Lagoon; Northern Coast Ranges 30 Comment
  UC213321  Gentiana plurisetosa Joseph P. Tracy 1919-9-22 5274 Humboldt Trinity Summit Northern Coast Ranges (in meadows) 1828 Comment
  UC1197404  Geranium dissectum Joseph P. Tracy 1911-7-5 3331 Humboldt near Mouth of Willow Creek; Northern Coast Ranges, Valley of Trinity River 152 Comment
  HSC90263  Geranium dissectum Jean Hanson 1980-5-24 67 Humboldt Indian (Gunther) Island in Humboldt Bay, city of Eureka, W end of island, S of dike Comment
  HSC8656  Geranium molle Richard Spjut 1968-11-2 258 Humboldt On the SW slope of Chaparral Mtn. 701 Comment
  SD113958  Geranium pilosum Darley F. Howe 1961-8-1 3101 Humboldt 3.3 miles north of Trinidad on Highway 101. Comment
  HSC99453  Geum macrophyllum K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-7 104 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
  UC154213  Geum macrophyllum var. macrophyllum J. P. Tracy 1901-6-23 1171 Humboldt immediate vicinity of Eureka 0 Comment
  HSC73711  Gilia capitata M. A. Baker 1980-7-15 2977 Humboldt Near Whiting Ridge. 1341 Comment
  RSA84895  Gilia capitata H. M. Pollard 1944-9-8 s.n. Humboldt Orleans Mountain 1524 Comment
  BLMAR309  Gilia capitata subsp. capitata Jennifer Anthony-Wheeler 2002-6-20 309 Humboldt Gilham butte, Growing along Rim Rd 731 Comment
  BLMAR433  Gilia capitata subsp. pacifica Jennifer Anthony-Wheeler 2008-6-13 433 Humboldt King range, growing in Prosper Prairie near hdwaters of Mill Creek 624 Comment
  RSA742109  Gilia capitata subsp. pacifica Peter L. Morrell, Nicole Deligans 1993-8-14 317 Humboldt North Coast: about 1 mile south of McNutt-Mattole Rd., 5.2 miles south of Devil's Gate, 8.4 miles south of Cape Mendocino. 30 Comment
  HSC16985  Gilia millefoliata R. T. Forester 1963-5-6 49 Humboldt 1 mi. S of Fairhaven on Samoa Rd. Comment
  HSC16987  Gilia millefoliata Norman H. Moe 1962-5-17 Humboldt Lanphere's Place Comment
  JEPS16254 Image available Gilia millefoliata J. P. Tracy 1903-6-12 1921 Humboldt immediate vicinity Eureka; ; Eureka, Humboldt Co. 0 Comment
  UCR202330  Gilia millefoliata Peter L. Morrell 1993-6-9 280 Humboldt North Coast, Samoa Peninsula near Eureka, along Hwy 255, 1.5 miles south of Samoa intersection, west side of highway 7 Comment
  UC604651  Gilia tricolor subsp. tricolor Joseph P. Tracy 1938-5-1 15733 Humboldt Willow Creek Trinity River Valley, at Willow Creek 152 Comment
  UC1199277  Glebionis segetum Joseph P. Tracy 1933-8-22 12977 Humboldt at Eureka 6 Comment
  UC1223069  Glebionis segetum Joseph P. Tracy 1950-6-17 18831 Humboldt at Eureka Comment
  CAS-BOT-BC218435  Glehnia littoralis subsp. leiocarpa Carl B. Wolf 1937-6-18 8906 Humboldt Centerville Beach 3 Comment
  HSC21496  Glehnia littoralis subsp. leiocarpa S. J. Moore 1965-4-10 1 Humboldt Dry Lagoon State Park, 100 yds from road, on beach Comment
  HSC62745  Glehnia littoralis subsp. leiocarpa J. M. DiTomaso 1979-5-20 1050 Humboldt Sand at Big Lagoon Park, 8 mi. N of Trinidad Comment
  RSA21037  Glehnia littoralis subsp. leiocarpa C. B. Wolf 1937-6-18 8906 Humboldt Centerville Beach. 3 Comment
  UC1197364  Glehnia littoralis subsp. leiocarpa Joseph P. Tracy 1938-7-15 16077 Humboldt mouth of Eel River 6 Comment
  UC187282  Glyceria elata Joseph P. Tracy 1911-7-7 3372 Humboldt 3 mi nw Willow Creek junction with Trinity River (near Beebe's Ranch); Northern Coast Ranges 914 Comment
  HSC93744  Glyceria fluitans Gordon Leppig, Sylvia Leppig, Kai Neander 1998-5-25 791 Humboldt Arcata, Alder Grove Pond 18 Comment
  SEINET7292868 Image available Glyceria occidentalis Richard W. Pohl 1963-1 9450 Humboldt Korbel Comment
  UC1103752  Glyceria striata Joseph P. Tracy 1926-5-22 7501 Humboldt Prairie Creek; Northern Coast Ranges 152 Comment
  RSA168832  Gnaphalium chilense Joseph P. Tracy 1950-7-15 19044 Humboldt Trinity River, E side, 1 mile N of mouth of Willow Creek. Comment
  UC1408980  Gnaphalium palustre Robert F. Thorne and P. Everett 1965-8-7 35227 Humboldt Samoa Peninsula 3 Comment
  UC582519  Gnaphalium palustre Joseph P. Tracy 1930-10-12 99211 Humboldt Eel River, Alton to Fortuna; Eel River 15 Comment
  HSC103605  Gnaphalium palustre Thomas W. Nelson, Jane Nelson 1985-8-5 8000 Humboldt Eureka; along old logging road just east of Lundbar Hills. 46 Comment
  UCD132451  Gnaphalium palustre James Payne Smith Jr. 1976-10-30 8995 Humboldt Mad River, east of Essex Lane exit. Comment
  UC1225875  Goodyera oblongifolia Joseph P. Tracy 1947-8-24 17907 Humboldt near Box Camp (Trinity Summit); Trinity Summit 1524 Comment
  CAS-BOT-BC304749  Grindelia hirsutula Doris K. Kildale 1925-7-10 944 Humboldt Dyerville 45 Comment
  CAS-BOT-BC304757  Grindelia hirsutula Doris K. Kildale 1927-6-25 3554 Humboldt Shelter Cove Comment
  CAS-BOT-BC304764  Grindelia hirsutula Kenneth Clark 1980-5-10 655 Humboldt Shelter Cove. South-facing bluffs of Point Delgada 7 Comment
  UC1223101  Grindelia hirsutula Joseph P. Tracy 1950-9-10 19359 Humboldt 1 mi n Capetown; Bear River Ridge 304 Comment
  UC665533  Grindelia hirsutula H. E. Parks Aug 1941 24190 Humboldt Big Lagoon Comment
  BLMAR676  Grindelia stricta Jennifer Wheeler 2013-6-7 676 Humboldt Humboldt County, Seven mile beach, along Mattole road 6 Comment
  RSA259557  Grindelia stricta var. stricta Gary S. Lester 1974-8-24 528 Humboldt Arcata salt marsh on Humboldt Bay at the 'G' St. oxidation plant. 1 Comment
  SEINET190492  Grindelia stricta var. stricta H. E. Parks 24190 Humboldt Big Lagoon Comment
  UC1222256  Hackelia setosa Joseph P. Tracy 1950-7-2 18970 Humboldt top of ridge near Elk Camp (e of Groves Prairie); Trinity Summit 1371 Comment
  HSC58333  Hastingsia alba Overton, Butler 1979-8-2 12636 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  RSA44540  Helenium autumnale H. M. Pollard 1947-8-18 s.n. Humboldt Klamath river bar, near Orleans. Comment
  HSC58152  Helenium bigelovii G. L. Clifton, Griswold 1979-8-2 12204 Humboldt Near Oregon Creek, close to the town of Hoopa 1663 Comment
  RSA168831  Helenium bigelovii Joseph P. Tracy 1949-8-11 18462 Humboldt Snow Camp. 1402 Comment
  UC1223097  Helenium bigelovii Joseph P. Tracy 1948-8-15 18153 Humboldt ridge near Elk Camp (trail to Grove's Prairie); Trinity Summit 1493 Comment
  UC630520  Helenium bolanderi H. E. and S. T. Parks 1937-6-1 5937 Humboldt Spruce Cove Trinidad, Spruce Cove 60 Comment
  HSC36271  Helenium bolanderi John Rehling 1974-8-22 34 Humboldt Big Lagoon Bog along the dryer margins Comment
  RSA167314  Helenium bolanderi Joseph P. Tracy, H. E. Parks 1950-7-16 11686 Humboldt Park's place, 2 miles N of Trinidad. Comment
  CAS-BOT-BC309414  Helenium puberulum Doris K. Kildale 1928-7-29 5921 Humboldt Mouth of Bear River at Capetown Comment
  CAS-BOT-BC305348  Helianthus annuus Henry M. Pollard 1947-9-9 s.n. Humboldt Orleans Comment
  CAS-BOT-BC310079  Hemizonella minima Doris Kildale Gillespie 1931-6-7 10588 Humboldt South Fork Mt., Blake Lookout 1726 Comment
  CAS-BOT-BC309984  Hemizonia congesta subsp. tracyi M. S. Jussel 1931-5-2 s.n. Humboldt 6 miles from Garberville Comment
  HSC38904  Heracleum maximum J. P. Smith, Steve Selva 1970-6-30 4116 Humboldt Comment
  RSA453722  Heracleum maximum B. C. Templeton 1964-6-13 10181 Humboldt Along old 101 Highway to Trinidad Comment
  HSC13056  Hesperocyparis macrocarpa C. E. Fellows 1970-12-7 369 Humboldt HSC Campus, Arcata Comment
  UC161074  Hesperolinon micranthum Joseph P. Tracy 1911-7-6 3356 Humboldt along road between Three Creeks and Mouth of Willow Creek; Northern Coast Ranges 762 Comment
  UC1212422  Hesperolinon micranthum Joseph P. Tracy 1925-7-12 7202 Humboldt hillsides w of Trinity River Valley (near the South Fork); Northern Coast Ranges 304 Comment
  SEINET10460657  Heterocodon rariflorum Tracy TRACY 17158 Humboldt GARBERVILLE Comment
  JEPS2429  Heterotheca oregona var. rudis Lincoln Constance 1934-5-26 666 Humboldt s end Dyerville Bridge (sand and gravel bar of South Fork of Eel River); Bull Creek Region, South Fork Eel River 45 Comment
  SBBG45062  Heterotheca sessiliflora subsp. bolanderi C. B. Wolf 1927-8-30 Humboldt 2 mi S of Petrolia on Mattole River near where road crosses river Comment
  HSC55352  Heuchera micrantha Griswold, Butler 1979-7-12 7276 Humboldt Near Cedar Creek, close to the town of Willow Creek 1158 Comment
  HSC57336  Hieracium albiflorum Overton, Butler 1979-7-26 10003 Humboldt Near Willow Creek 1341 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
  HSC74180  Hieracium albiflorum M. A. Baker 1980-7-23 3162 Humboldt Near Orleans Mtn. 1859 Comment
  RSA32658  Hieracium albiflorum Doris K. Kildale 1927-7-17 3752 Humboldt Bug Creek, Chaparral Mountain Comment
  SEINET11262552  Hieracium albiflorum D. E. Anderson 1972-6-20 5745 Humboldt Along the Redwood Valley-Hoopa Rd. east of the summit.; 0 Comment
  HSC98711  Hieracium albiflorum Cara Witte 2007-7-25 577 Humboldt Forest Service Road 5N10. 2.5 miles east of intersection with National Forest 1. 1327 Comment
  POM289677  Hieracium albiflorum Lyman Benson 1928-7-12 485 Humboldt Weott Ranger Station; Mt.Range: Seaward N Coast; Watershed: South Fork Eel River. 61 Comment
  RSA44541  Hieracium albiflorum H. M. Pollard 1947-8-23 s.n. Humboldt Fontana's Fishing Lodge, near Orleans. Comment
  SEINET270546  Hierochloe occidentalis Richard R. Halse 1996-3-26 5020 Humboldt Redwood National Park ; At junction of Bald Hills Road and Holter Ridge Bike Route 11 miles southeast of US Highway 101 708 Comment
  CHSC2150  Holcus lanatus M. Anthony 1960-5-1 Humboldt Comment
  HSC10135  Holcus lanatus D. B. Bader 1963-5-1 12 Humboldt Second of the Clam Beach Lagoons, W of Hwy. 101, along the railroad tracks. Comment
  HSC90677  Holcus mollis Gail Newton 1982-6-1 3568 Humboldt Elk River Wildlife Area, Eureka. Comment
  HSC57363  Holodiscus discolor Overton, Butler 1979-7-26 10068 Humboldt Near Cold Spring, close to the town of Willow Creek 1408 Comment
  HSC64166  Holodiscus discolor J. O. Sawyer, K. A. Sawyer 1979-6-24 3410 Humboldt Slopes alongside Aikens Creek. 366 Comment
  RSA183590  Holodiscus discolor D. E. Anderson 1963-9-1 2806 Humboldt Near Kneeland. 732 Comment
  RSA449759  Holodiscus discolor Thekla Mohr 1918-07 3349 Humboldt Eel River. Comment
  HSC58667  Hordeum brachyantherum G. L. Clifton, Griswold 1979-8-1 12081 Humboldt Near High Spring, close to the town of Hoopa. 1798 Comment
  UC187304  Hordeum brachyantherum subsp. brachyantherum Joseph P. Tracy 1911-6-25 3252 Humboldt Bucksport region about Humboldt Bay, Bucksport (region about Humboldt Bay, Northern Coast Region) 0 Comment
  RSA87057  Hordeum jubatum Joseph P. Tracy 1927-7-16 8249 Humboldt About Humboldt Bay, Mouth of Elk River. 3 Comment
  HSC26776  Hordeum marinum subsp. gussoneanum Thomas W. Nelson 1971-5-31 466 Humboldt 915 Comment
  HSC10224  Hordeum murinum subsp. glaucum R. T. Forester 1963-3-31 38 Humboldt 0.25 mi. N of Fairhaven on Samoa Rd. Comment
  CAS-BOT-BC536629  Horkelia californica Paul F. Covel 1937-7-13 800 Humboldt Cape Fortuna Comment
  JEPS102923  Horkelia tridentata subsp. flavescens Thomas W. Nelson and Jane P. Nelson 1987-6-11 8610 Humboldt 8.5 mi E of junction with SR 96 Big Hill Rd Comment
  UC154501  Horkelia tridentata subsp. flavescens J. Burtt Davy 1899-6-19 5629 Humboldt from Bairs to Hoopa Hoopa Mt. Comment
  UC1103413  Hydrocotyle ranunculoides Joseph P. Tracy 1940-10-5 16744 Humboldt mouth of Little River 3 Comment
  UC1239766  Hydrophyllum occidentale Joseph P. Tracy Jul 16 1930-Jul 19 1930 9085 Humboldt South Fork Mountain Northern Coast Ranges (near McKay Camp) 1676 Comment
  UC180184  Hydrophyllum tenuipes Joseph P. Tracy 1914-6-7 4492 Humboldt Humboldt Bay Region; Northern Coast Region, Valley of North Fork of Eel River 0 Comment
  HSC57341  Hypericum anagalloides Walter Overton, Butler 1979-7-26 10016 Humboldt Near White Rock Spring, close to the town of Willow Creek 1554 Comment
  UC1198409  Hypericum anagalloides Joseph P. Tracy 1918-7-5 5005 Humboldt White Thorn Valley Northern Coast Ranges, White Thorn Valley 304 Comment
  UC1198410  Hypericum anagalloides Joseph P. Tracy 1913-6-1 4076 Humboldt at Eureka Northern Coast Region, Eureka 0 Comment
  UC1198419  Hypericum formosum var. scouleri J. P. Tracy 1898-7-5 249 Humboldt near Ryan's Slough School House on Worthington Prairie (immediate vicinity of Eureka) 0 Comment
  RSA60489  Hypericum mutilum John H. Thomas 1949-6-12 899 Humboldt Near Klamath River, 1/2 mile N of town of Orleans Comment
  UC1004334  Hypericum perforatum W. L. Colwell 1954-11-20 19 Humboldt along Eel R. 3 mi. e. of S. Fork; Quadrangle 29B4, Eel R. 91 Comment
  UC1198400  Hypericum perforatum Joseph P. Tracy 1934-7-9 13346 Humboldt Dobbyn Creek 152 Comment
  CAS-BOT-BC401230  Hypericum perforatum J. H. Thomas 1949-6-12 899 Humboldt Near Klamath River, about 1/2 mile north of town of Orleans Comment
  HSC99557  Hypericum perforatum K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-8-10 222 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  UC1199470  Hypochaeris radicata Joseph P. Tracy 1926-5-2 7422 Humboldt near the s fork Trinity River; Northern Coast Ranges, Trinity River Valley 182 Comment
  HSC100106  Hypochaeris radicata A. Montalvo 1975-5-24 271 Humboldt Samoa Dunes off Samoa Blvd., across from the boat landing Comment
  RSA424922B  Hypochaeris radicata R. D. Goeden, D. W. Ricker 1987-9-2 9 Humboldt Loleta, along Cannibal Road. 8 Comment
  CAS-BOT-BC206845  Iliamna latibracteata C. B. Wolf 1931-8-28 2367 Humboldt Redwood Highway, 3 miles north of Orick, Davison's Ranch on Prairie Creek 60 Comment
  RSA366776  Iris Anonymous 1941-6-25 s.n. Humboldt Between Garberville [Garbervill Quad] and Pepperwood [Redcrest Quad] Comment
  RSA67626  Iris Philip A. Munz 1951-7-15 16546 Humboldt dry slopes in woods, about 3 miles northeast of Willow Creek Comment
  RSA49981  Iris chrysophylla E. L. Nelson 1949-1 s.n. Humboldt Originally collected at Weitchpec, CA on hot dry open slopes along road. Comment
  CHSC2200  Iris douglasiana E. Crouch 1929-5-8 Humboldt Comment
  HSC13857  Iris douglasiana Elrid H. Spinas 1948-6-16 59 Humboldt Horse Mtn. Comment
  HSC47580  Iris douglasiana Sheila Logan 1978-4-10 176 Humboldt Redwood Park behind HSU campus Comment
  UC615044  Iris douglasiana Beryl O. Schreiber 1934-6-5 1134 Humboldt 15 mi e Blue Lake (road to Redding) Comment
  JEPS17228  Iris douglasiana Joseph P. Tracy 1935-6-23 14001 Humboldt road e Orick; Bald Hills 609 Comment
  RSA135872  Iris douglasiana Lee W. Lenz, E. K. Balls 1955-5-15 20742 Humboldt 2 miles southeast of Petrolia, along Old Coast Road to Ettersburg 122 Comment
  RSA135932  Iris douglasiana Lee W. Lenz, E. K. Balls 1951-5-9 16522 Humboldt 9.5 miles to 11.3 miles west of junction with Highway 101, road between Rockport and Fort Bragg Comment
  UC1174761  Iris douglasiana L. W. Lenz and E. K. Balls 1951-5-8 16508 Humboldt 14.7 mi n Trinidad (Hwy 101) 6 Comment
  CAS-BOT-BC123359  Iris humboldtiana Alice Eastwood; John Thomas Howell 1937-6-24 4857 Humboldt Road to Horse Mt. Comment
  UC14927  Iris macrosiphon P. E. Goddard 1901-7-8 30 Humboldt Hupa Comment
  HSC45313  Iris tenax subsp. klamathensis R. York 1978-5-11 163 Humboldt Along logging road off Bark Shanty Rd. above Orleans 610 Comment
  HSC65229  Iris tenax subsp. klamathensis T. Jimerson, J. Pageau 1979-5-1 444 Humboldt 3.6 mi. N of Orleans on FS Rd. 15N01 Comment
  HSC66484  Iris tenax subsp. klamathensis T. Jimerson, J. Pageau 1979-4-27 435 Humboldt FS Rd. 12N20, 0.9 mi. from FS Rd. 15N01, Orleans 762 Comment
  HSC97561  Iris tenuissima subsp. tenuissima Cara Witte 2007-6-1 162 Humboldt Horse Mountain Botanical Area. Along Forest Service 6N38. 1311 Comment
  CAS-BOT-BC340153  Jaumea carnosa C. C. Harris; S. K. Harris 1939-8-26 s.n. Humboldt South shore of Humboldt Bay Comment
  UC165200  Jaumea carnosa Joseph P. Tracy 1909-9-19 3101 Humboldt bay shore at Samoa; North Coast Ranges, vicinity of Humboldt Bay 0 Comment
  CAS-BOT-BC101963  Juglans hindsii Henry M. Pollard 1947-8-30 s.n. Humboldt Along Klamath River nr. Wilson Creek, Orleans region Comment
  UC2493  Juncus bolanderi Harley P. Chandler Jun 1901 1531 Humboldt Klamath River North Coast Ranges 426 Comment
  UC249817  Juncus bolanderi Joseph P. Tracy 1924-7-13 6730 Humboldt Big Lagoon 6 Comment
  UC1152113  Juncus capitatus Joseph P. Tracy 1948-6-13 18045 Humboldt at the former Will Perry Place Dobbyn Creek 152 Comment
  CHSC105147  Juncus covillei Peter F. Zika 2008-10-19 24231 Humboldt Uncommon in damp ditches, full sun, E side of Route 101, near Exit 728 for Trinidad Beach 110 Comment
  HSC98841  Juncus covillei Cara Witte 2008-7-16 912 Humboldt Board Camp Mountain. Forest Service Road 4N38. 1/2 mile south of intersection with National Forest 1. 1409 Comment
  UC249747  Juncus covillei var. obtusatus Joseph P. Tracy 1923-6-19 6294 Humboldt Upper Mattole Valley Northern Coast Ranges 152 Comment
  UC183677  Juncus ensifolius Joseph P. Tracy 1912-7-24 3809 Humboldt Eureka Northern Coast Region 0 Comment
  SEINET11789636  Juncus falcatus J. P. Tracy 1930-1 9218 Humboldt N end of Humboldt Bay Comment
  UC1103045  Juncus falcatus subsp. falcatus Joseph P. Tracy with H. E. Parks 1924-8-3 6746 Humboldt Stone Lagoon Northern Coast Region 6 Comment
  CHSC110174  Juncus falcatus subsp. sitchensis Peter F. Zika 2007-6-30 23319 Humboldt SW corner of Big Lagoon, (NCo, North Coast). 2 Comment
  UC167841  Juncus falcatus subsp. sitchensis Schmidt Humboldt Humboldt Bay Comment
  UC1152103  Juncus laccatus Joseph P. Tracy 1930-7-23 9135 Humboldt Cold Springs Horse Springs Comment
  UCSC000129  Juncus lescurii H. S. Yates 1936-6-16 5655 Humboldt 0.5 miles S.W. of Samoa - Eureka 3 Comment
  HSC57975  Juncus mertensianus G. L. Clifton, Griswold 1979-7-31 11679 Humboldt Near the Trinity Summit Guard Station, close to the town of Hoopa. 1804 Comment
  UC212987  Juncus mertensianus Joseph P. Tracy 1919-9-22 5265 Humboldt Trinity Summit Northern Coast Ranges 1828 Comment
  JEPS67092  Juncus occidentalis Joseph P. Tracy 1926-7-5 7724 Humboldt Valley of South Yager Creek Northern Coast Ranges 762 Comment
  UC212985  Juncus orthophyllus Joseph P. Tracy 1919-9-22 5277 Humboldt Trinity Summit Northern Coast Ranges 1889 Comment
  UC302167  Juncus phaeocephalus Joseph P. Tracy 1925-10-18 7293 Humboldt Big Lagoon Northern Coast Region 6 Comment
  RSA42044  Juncus xiphioides H. C. Cantelow 1936-8-28 1641 Humboldt 4 miles W of Dinsmore Ranch. Comment
  HSC82168  Kalmia polifolia D. K. Imper 1985-6-13 Humboldt Edge of Waterdog Lake 1768 Comment
  CAS-BOT-BC235889  Keckiella corymbosa Joseph P. Tracy 1933-9-9 13074 Humboldt Along S. Fork of Eel River. Vicinity of Garberville 121 Comment
  CAS-BOT-BC235891  Keckiella corymbosa C. Epling; Wm. Robison 1935-7-24 s.n. Humboldt Dyerville Comment
  CAS-BOT-BC235893  Keckiella corymbosa Milo S. Baker 1923-8-25 336 Humboldt Near Richardson Grove Comment
  HSC74728  Keckiella corymbosa Gail Newton 1981-7-22 2263 Humboldt Near Bug Creek 1375 Comment
  POM225119  Keckiella corymbosa Philip A. Munz 1936-8-9 14328 Humboldt South fork of Eel River, 5 miles north of Humboldt-Mendocino county line. Comment
  UC902208  Kickxia elatine Joseph P. Tracy 1946-8-25 17648 Humboldt near mouth of Van Duzen River; Eel River 15 Comment
  CAS-BOT-BC499191  Kopsiopsis strobilacea C. Young 1967-5-15 s.n. Humboldt Orleans Comment
  HSC57881  Kyhosia bolanderi Overton, Butler 1979-7-31 11419 Humboldt Near Water Dog Lakes, close to the town of Hoopa 1830 Comment
  HSC57008  Lactuca serriola Overton, Butler 1979-7-24 9600 Humboldt Near Titlow Hill, close to the town of Willow Creek. 1250 Comment
  UC1051586  Lactuca serriola Joseph P. Tracy 1943-11-28 17460 Humboldt gravel bars <from> Alton to Fortuna; Eel River 15 Comment
  HSC69892  Lagophylla ramosissima Thomas W. Nelson, Jane P. Nelson 1977-7-29 3639 Humboldt Beside S.R. 36 at head of Larabee Valley 823 Comment
  HSC34652  Lamium purpureum A. M. Montalvo 1975-4-10 205 Humboldt Vacant lot bordering HSU campus between Union St. and A St. 15 Comment
  HSC77915  Landoltia punctata Daniel V. Richards 1981-8-25 102 Humboldt 11 km E of Arcata, W End Rd. Comment
  JEPS87028  Lapsana communis Dean W. Taylor 1991-9-15 12293 Humboldt near the mouth Tom Creek (along Highway 101); North Coast Ranges, Big Lagoon 3 Comment
  HSC99476  Lapsana communis K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-14 133 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  HSC35036  Lasthenia californica Thomas W. Nelson 1975-5-24 1859 Humboldt McKeown Ranch, N of Dinsmore. Comment
  UC1199135  Lasthenia californica subsp. californica Joseph P. Tracy 1932-5-1 9856 Humboldt Redway 182 Comment
  CAS-BOT-BC204934  Lathyrus biflorus Kenneth W. Fuller 1998-7-2 s.n. Humboldt Red Mountain Comment
  JEPS98949  Lathyrus biflorus Kenneth W. Fuller 1998-7-2 Humboldt Red Mountain (type locality) Comment
  SEINET8397603  Lathyrus biflorus Unknown 1980-6-10 5432 Humboldt Blocksburg Quadrangle; northeast slope of Red Mountain. 1372 Comment
  UC1128970  Lathyrus littoralis H. S. Yates 1936-6-16 5658 Humboldt 0.5 mi sw Samoa; Eureka Quad. 3 Comment
  HSC49393  Lathyrus littoralis R. York 1979-5-15 291 Humboldt Coastal strand opposite the Louisiana Pacific Mill in Samoa. Comment
  HSC71606  Lathyrus nevadensis var. nevadensis Gail Newton 1980-6-16 199 Humboldt Near Onion Mtn. 1280 Comment
  JEPS55344  Lathyrus nevadensis var. nevadensis Joseph P. Tracy 1926-5-2 7444 Humboldt Willow Creek Canyon Northern Coast Ranges 609 Comment
  HSC75477  Lathyrus polyphyllus J. O. Sawyer 1980-7-18 3624 Humboldt North Trinity Mountain Research Natural Area, north of Mill Creek Lake to Red Cap Hole. Comment
  SDSU4206  Lathyrus sulphureus D. F. Howe 1962-5-21 3298 Humboldt 16 miles north of Garberville on #101. 61 Comment
  UC1112278  Lathyrus torreyi R. E. Nelson 1956-7-3 193 Humboldt 1.5 mi s Brush Mountain (in vicinity of Salyer); Six Rivers National Forest, Salyer 792 Comment
  UC160919  Lathyrus torreyi Joseph P. Tracy 1909-8-1 3062 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  UCD106657  Lathyrus torreyi K. Esau 1934-5-8 s.n. Humboldt Redwood Highway near Scotia. Comment
  HSC75556  Lathyrus torreyi J. O. Sawyer, R. J. Cole 1977-7-3 3004 Humboldt Environs of Mud Spring, Big Hill Rd. (FS Rd. 8N01) 1524 Comment
  SEINET12151839  Lathyrus torreyi C. L. Hitchcock 1949-1 19084 Humboldt ca 15miE of Blue Lake, along Hwy 299 Comment
  UC1199067  Lathyrus vestitus Joseph P. Tracy 1937-6-20 15359 Humboldt s of Ferndale; Wild Cat Ridge 304 Comment
  UC709417  Lathyrus vestitus Joseph P. Tracy 1933-5-18 12195 Humboldt near Essex; Mad River 30 Comment
  UC931755  Lathyrus vestitus C. L. Hitchcock 1949-6-7 19083 Humboldt 0.5 mi s Pepperwood (along Highway 101) Comment
  HSC27890  Lathyrus vestitus subsp. bolanderi Clifton Raymond Chesbrough 1973-6-19 70 Humboldt 0.25 mi. from Harris and T St. on U St. Comment
  JEPS55357  Lathyrus vestitus var. ochropetalus Mrs. M. H. Manning 1900-1 Humboldt Hupa Valley Comment
  HSC103337  Lathyrus vestitus var. ochropetalus Thomas W. Nelson, Jane Nelson 1983-6-12 7413 Humboldt Along Kneeland Rd., ~ .5 mi. SE of junction with Maple Creek Rd. 671 Comment
  JEPS13463  Layia carnosa Joseph P. Tracy 1917-5-30 4796 Humboldt sand dunes of coean beach at mouth Little River; Northern Coast Region Comment
  UC198626  Layia carnosa Joseph P. Tracy 1917-5-30 4796 Humboldt mouth Little River Comment
  UC89177  Layia carnosa Harley P. Chandler May 1901 1150 Humboldt Humboldt Bay 3 Comment
  HSC90241  Leontodon saxatilis subsp. saxatilis Jean Hanson 1980-5-24 64 Humboldt Indian (Gunther) Island in Humboldt Bay, city of Eureka, W end of island, S of dike Comment
  UC582428  Leontodon saxatilis subsp. saxatilis Joseph P. Tracy 1933-8-22 12982 Humboldt near Fields Landing (around Humboldt Bay); Northern Coast Region, around Humboldt Bay 6 Comment
  HSC23119  Lepidium campestre B. D. Rogers, William J. Ferlatte 1966-6-15 2109 Humboldt Larabee Valley 762 Comment
  UC14403  Lepidium densiflorum Chesnut and Drew 1888-7-10 Humboldt Jarnigan's Comment
  CHSC31922  Lepidium didymum M. S. Taylor 1980-10-9 3365 Humboldt Bed of Jacoby Creek, ca. 1/4 mi w of its jct with Arcata Rd, ca. 5 mi s of Arcata in Bayside. 15 Comment
  CAS-BOT-BC89077  Lepidium didymum Joseph P. Tracy 1938-7-15 16067 Humboldt Mouth of Eel River. 3 Comment
  POM203447  Lepidium heterophyllum M. S. Jussel 1931-5-2 s.n. Humboldt 20 mi. N. of Garberville. Comment
  UC1225755  Lepidium nitidum Joseph P. Tracy 1948-5-31 18012 Humboldt Alder Point 304 Comment
  UC1116218  Lepidium strictum Joseph P. Tracy 1946-5-30 17540 Humboldt vicinity Carlotta 30 Comment
  UC581779  Lessingia nemaclada Joseph P. Tracy 1937-9-5 15681 Humboldt at Willow Creek; Trinity River Valley 152 Comment
  CAS-BOT-BC341827  Lessingia nemaclada Joseph P. Tracy 1929-8-18 8656 Humboldt Northern Coast Ranges. Dinsmore's Ranch: On Van Duzen River opposite Buck Mountain 670 Comment
  HSC32510  Lessingia nemaclada Thomas W. Nelson 1973-9-3 1137 Humboldt E of Dinsmore beside Hwy. 36 Comment
  JEPS20619  Lessingia nemaclada Joseph P. Tracy 1937-9-5 15681 Humboldt Willow Creek Trinity River Valley 152 Comment
  UC1199333  Lessingia nemaclada Joseph P. Tracy 1939-8-5 16374 Humboldt gravel bar of river opposite Buck Mt.; Van Duzen River, Dinsmore's 737 Comment
  HSC71379  Leucanthemum vulgare J. P. Smith 1971-10-6 4942 Humboldt End of Murray Rd. in McKinleyville. Comment
  HSC67026  Leucanthemum vulgare J. P. Smith 1970-6-7 3803 Humboldt 0.6 mi. N of Luffenholtz Beach, along Hwy. 101, near Trinidad. Comment
  HSC3105  Leucojum aestivum J. C. Reppas 1963-2-22 20 Humboldt 820 Fickle Hill Rd. Comment
  UC673022  Lewisia leeana Joseph P. Tracy 1935-7-24 14200 Humboldt near Ranger Station; Trinity Summit 1828 Comment
  CAS-BOT-BC283511  Leymus X vancouverensis Joseph P. Tracy 1927-6-26 8214 Humboldt Stone Lagoon 6 Comment
  CAS-BOT-BC283513  Leymus X vancouverensis Joseph P. Tracy 1930-7-21 8894 Humboldt Cape Mendocino, near ocean shore S of point of the cape 30 Comment
  CAS-BOT-BC283516  Leymus X vancouverensis W. R. Dudley 1899-6-1 s.n. Humboldt Eureka Peninsula Comment
  CAS-BOT-BC436499  Ligusticum apiifolium John Thomas Howell 1937-7-31 13714 Humboldt Boise Creek Comment
  CDA36066  Ligustrum vulgare R. Robison 2011-6-3 Humboldt Trinidad State Beach, across road from Humboldt State Marine Research Center. 0 Comment
  CAS-BOT-BC451581  Lilaea scilloides Joseph P. Tracy 1933-5-20 12274 Humboldt Cape Ridge - back of Cape Mendocino 304 Comment
  UC154089  Lilaeopsis occidentalis Joseph P. Tracy 1909-9-19 3102 Humboldt near Samoa; Northern Coast Region, Humboldt Bay 0 Comment
  CAS-BOT-BC130634  Lilium kelloggii Doris K. Kildale 1925-6-28 790 Humboldt Kneeland Prairie 609 Comment
  CHSC98393  Lilium kelloggii Dean Wm. Taylor 2004-6-23 19116 Humboldt Fickle Hill Road 1.3 miles north of junction Butler Valley road. 731 Comment
  UC666960  Lilium kelloggii Joseph P. Tracy Aug 1934 13643 1/2 Humboldt w edge Kneeland Prairie Comment
  SEINET4063663  Lilium occidentale O. M. Clark 1932-1 Humboldt Comment
  UC673408  Lilium occidentale Herbert L. Mason 1932-7-21 7106 Humboldt Trinidad Head Comment
  SEINET12050872  Lilium occidentale F. H. Utech 1977-1 Humboldt Comment
  UC1225855  Lilium pardalinum Joseph P. Tracy 1948-9-5 18196 Humboldt head of Little Hors-Linto Creek; Trinity Summit 1371 Comment
  HSC99865  Lilium pardalinum subsp. vollmeri T. Jimerson, J. Pageau 1979-8-10 713 Humboldt Near Tish Tang A Tang Ridge, close to the town of Hoopa 1464 Comment
  CAS-BOT-BC132960  Lilium rubescens A. M. Vollmer; L. Beane 1951-6-1 147 Humboldt On trail to Blohn's cabin, Bald Mountain, east of Korbel Comment
  HSC63090  Lilium rubescens M. A. Baker 1979-7-6 1012 Humboldt 0.6 k. W of FS 15N01 on FS 12N16 toward Bald Mtn. Comment
  HSC98854  Lilium washingtonianum subsp. purpurascens Cara Witte 2008-7-11 872 Humboldt National Forest 1. 1/2 mile south from intersection with Forest Service Road 6N01B. 1575 Comment
  UC1197414  Limnanthes douglasii Joseph P. Tracy 1927-6-5 8106 Humboldt valley of South Yager Creek Northern Coast Ranges 762 Comment
  UC668183  Limnanthes douglasii subsp. nivea Joseph P. Tracy 1935-5-25 13863 Humboldt Fort Seward 106 Comment
  CDA33609  Limnobium laevigatum David Juliano 2010-9-7 PDR# 1414284 Humboldt Loleta; Catfish Lake (a stream-fed natural pond), near Tompkins Hill Road and Hookton Road 0 Comment
  UC902115  Limonium californicum Joseph P. Tracy 1949-9-18 18581 Humboldt Eel River; mouth, area of salt marsh 3 Comment
  UC146168  Linanthus androsaceus Joseph P. Tracy 1908-6 2746 Humboldt nw slope Buck Mountain; Northern Coast Ranges 457 Comment
  UC1198540  Linanthus bolanderi Joseph P. Tracy 1914-7-5 4566 Humboldt High Prairie Northern Coast Ranges, Bald Mountain 1066 Comment
  JEPS58421  Linanthus filipes W. L. Jepson 1902-7-11 2016 Humboldt Martin's Ranch South Fork of Trinity River Comment
  RSA505340  Linum angustifolium Barbara Ertter, Thomas Delendick 1987-5-16 6911 Humboldt Hwy 299, ca 8 mi E of Arcata, 9.5 mi W of Lord Ellis summit. Comment
  HSC59497  Linum bienne M. A. Ericksen 1979-5-23 304 Humboldt 880 Central Ave., McKinleyville. Comment
  UC668020  Lipocarpha aristulata Joseph P. Tracy 1931-9-7 9650 B Humboldt Trinity River Valley, at Willow Creek Willow Creek; Trinity River Valley, Willow Creek 152 Comment
  HSC30369  Listera caurina J. D. Ackerman 1974-6-21 320 Humboldt 2 mi. N of Manila, between dunes and Mad River Slough Comment
  HSC27779  Listera convallarioides J. D. Ackerman 1973-8-19 113 Humboldt East edge of Mill Creek Lake, E of Hoopa Comment
  HSC59585  Listera cordata var. nephrophylla Rick Lundquist 1979-5-13 84 Humboldt 0.5 mi. down private rd. to campground at Korbel, 1 mi. E of Blue Lake 30 Comment
  JEPS37741  Lithocarpus densiflorus W. L. Jepson 1902-6 2138 Humboldt Bear River Range Comment
  UC1196370  Lithocarpus densiflorus Joseph P. Tracy 1930-7-26 9114 Humboldt vicinity of Garberville; Northern Coast Ranges 121 Comment
  RSA174011  Lithocarpus densiflorus var. densiflorus Robert F. Thorne 1957-9-2 19004 Humboldt Sandy margin of branch of the Eel River at Burlington State Park, just S of Weott. Comment
  RSA273403  Lithocarpus densiflorus var. densiflorus Thomas W. Nelson, Jane Nelson 1976-2-21 2247 Humboldt Beside the Hoopa-Redwood Valley Rd. ca. 5 mi. west of Hoopa. Comment
  CAS-BOT-BC430958  Lithophragma bolanderi Doris K. Kildale 1928-5-6 5996 Humboldt Garberville. South Fork of Eel River Comment
  UCD115917  Lobularia maritima Joseph P. Tracy 1946-6-2 17556 Humboldt Garden escape, sand dunes, near Samoa, on Humboldt Bay. 6 Comment
  CAS-BOT-BC342348  Logfia gallica Henry M. Pollard 1945-8-26 s.n. Humboldt Between Orleans and Camp Creek, Klamath River Canyon Comment
  CAS-BOT-BC283408  Lolium multiflorum Ashley C. Browne 1936-6-11 s.n. Humboldt Patrick's Point State Park Comment
  UC33879  Lolium temulentum Chesnut and Drew 1888-7-13 Humboldt Campbell's Comment
  BLMAR646  Lomatium Jennifer Wheeler 2011-5-27 646 Humboldt Lacks Creek, Oak woodland of Stormy Saddle 1097 Comment
  UC1197166  Lomatium californicum Joseph P. Tracy 1912-7-31 3929 Humboldt near summit Buck Mt.; Northern Coast Ranges, Buck Mt. 1676 Comment
  JEPS17125  Lomatium dasycarpum subsp. dasycarpum W. L. Jepson 1902-6 1891 Humboldt Fort Seward Ranch ridge (= Mail Ridge) 1066 Comment
  UC21100  Lomatium dissectum var. multifidum Harley P. Chandler June, 1901 1340 Humboldt Hupa Indian Reservation North Coast Ranges, Hupa Indian Reservation 152 Comment
  HSC102607  Lomatium macrocarpum M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-28 1594 Humboldt Slopes above Bret Hole and below trail 6E18, 1.5 km SSW of Trinity Summit. 1778 Comment
  HSC82036  Lomatium macrocarpum Thomas W. Nelson, James Nelson 1980-6-10 5404 Humboldt Along Swayback Ridge 4-wheel drive road, 2.5 mi. N of junction with FS Rd. 1S07 1463 Comment
  UC1463743  Lomatium tracyi Barbara Kelly 1978-5-1 590 Humboldt 1/4 mi from Horse Mountain Road, 1/2 mi below turnoff to summit, near end of unused gravel road. Comment
  JEPS14215  Lomatium utriculatum Joseph P. Tracy 1930-6-29 8814 Humboldt lower foothills of n.w. slope Buck Mt. 762 Comment
  UC1197141  Lomatium utriculatum Joseph P. Tracy 1947-6-25 17718 Humboldt opposite Buck Mt. (along Van Duzen R., Dinsmore's); Dinsmore's, Van Duzen R. 762 Comment
  HSC3946  Lonicera conjugialis J. P. Tracy 1932-7-11 10414 Humboldt Trinity Summit 1524 Comment
  UC1239549  Lonicera conjugialis Joseph P. Tracy 1932-7-11 10413 Humboldt Corral Prairie Trinity Summit 1584 Comment
  RSA696526  Lonicera hispidula var. vacillans J. R. Bruff 1937-8-17 925 Humboldt Richardson Grove. Comment
  UC1239553  Lonicera hispidula var. vacillans Joseph P. Tracy 1923-10-14 6572 Humboldt 5 mi n Blocksburg; Larrabee Creek 457 Comment
  UC169081  Lonicera hispidula var. vacillans Mrs. M. H. Manning 1901-7-27 308 Humboldt near Hupa (Bald Hill) Comment
  HSC95659  Lonicera hispidula var. vacillans Steven Lee 2004-4-25 22 Humboldt South Fork Rd., from Hwy. 299 to County Rd. 341, 1/8 mi. down river access trail at end of Rd. Comment
  CAS-BOT-BC241489  Lonicera involucrata var. ledebourii Elizabeth Parsons Hawver 1915-6-1 s.n. Humboldt Carlotta Comment
  CAS-BOT-BC241491  Lonicera involucrata var. ledebourii C. Hart Merriam 1922-7-4 s.n. Humboldt Fortuna Comment
  CAS-BOT-BC241493  Lonicera involucrata var. ledebourii Philip A. Munz 1925-6-21 9893 Humboldt Clam Beach, no. of Eureka Comment
  CHSC13520  Lonicera involucrata var. ledebourii A. R. Morrison 1974-4-27 Humboldt Scattered in open and partially shaded areas along coast ca. 2 mi. N of Trinidad. Comment
  HSC40297  Lonicera involucrata var. ledebourii Linda M. Barker 1976-4-30 1400 Humboldt 3 mi. W of Arcata Comment
  UC493999  Lotus aboriginus H. E. Parks and J. P. Tracy 1930-9-15 762 Humboldt Kneeland Bald Hills Comment
  RSA168860  Lotus formosissimus Joseph P. Tracy 1950-6-8 18746 Humboldt Capetown, on Bear River, top of Cape Ridge. 152 Comment
  HSC44376  Lotus humistratus Thomas W. Nelson, Jane P. Nelson 1977-6-19 3512 Humboldt SW of Alder Springs along Rd. 2S08. 1524 Comment
  HSC78921  Lotus humistratus Jimerson, Imper 1982-5-17 1441 Humboldt Near Ashfield Ridge. 822 Comment
  JEPS19446  Lotus micranthus W. L. Jepson 1902-6 1900 Humboldt Ft. Seward Ranch Ridge (= Mail Ridge) Ft. Seward Ranch Ridge 1219 Comment
  UC1223422  Lotus pinnatus Joseph P. Tracy 1937-7-3 15375 Humboldt opposite Willow Creek; Trinity River Valley Comment
  UC495722  Lotus purshianus var. purshianus Joseph P. Tracy 1930-7-23 9122 Humboldt Horse Mountain Northern Coast Ranges 1524 Comment
  UC726597  Lotus purshianus var. purshianus A. A. Heller 1923-7-9 Humboldt between Eureka and Fortuna Comment
  UC1197298  Lotus wrangelianus Joseph P. Tracy 1918-7-1 4978 Humboldt 3 mi s Point of Cape; Northern Coast Ranges, Cape Mendocino 3 Comment
  SEINET3523647 Image available Lotus yollabolliensis Joseph P. Tracy 1937-7-29 15586 Humboldt South Fork Mountain, near McKay camp 1676 Comment
  HSC74810  Luina hypoleuca Gail Newton 1980-7-23 1725 Humboldt Near Packsaddle Ridge 1463 Comment
  HSC98035  Luina hypoleuca Cara Witte 2007-7-17 535 Humboldt Along National Forest 1 on Kinsey Ridge. Approximately 2 miles southeast of intersection with 5N04. Near cattleguard. 1368 Comment
  HSC97955  Lupinus adsurgens Cara Witte, Michael Scott 2007-6-22 349 Humboldt Board Camp Mountain, jeep trail between Tri Board Camp and Fork Camp 1565 Comment
  JEPS85687  Lupinus albicaulis Joseph P. Tracy Jul 16 1930-Jul 19 1930 8954 Humboldt near Blake lookout (South Fork Mountain); Northern Coast Ranges, South Fork Mountain 1737 Comment
  HSC2122  Lupinus arboreus C. B. Wolf 1927-8-29 1209 Humboldt Devil's Gate, S of Cape Mendocino. Comment
  UC503006  Lupinus arboreus Joseph P. Tracy 1932-5-16 10104 Humboldt near Samoa (on Humboldt Bay); Northern Coast Region, on Humboldt Bay 6 Comment
  UCD106622  Lupinus arboreus Roman Gankin 1965-8-6 548 Humboldt 1.3 miles south of Samoa, Samoa Peninsula. Comment
  UCSB23853  Lupinus arboreus J. R. Haller 1967-6-17 2180 Humboldt collected 10.0 mi N, along U S Highway 101 at Clam Beach County Park Arcata - Clam Beach County Park, U S Highway 101 and Arcata Comment
  SEINET10544235  Lupinus arboreus Mary Susan Taylor 1990-8-22 Taylor 6070 Humboldt Samoa Recreation Area on Samoa Peninsula, Staging Area, Eureka. Coastal scrub in ORV area. Comment
  UC146976  Lupinus arboreus Harley P. Chandler May, 1901 1238 Humboldt near Vance (on Mad River); North Coast Ranges, on Mad River 91 Comment
  BLMAR809  Lupinus bicolor Madeleine Hassett 2017-6-7 809 Humboldt King range, Dune next to Mattole Campground (Petrolia) 0 Comment
  HSC71165  Lupinus bicolor Thomas W. Nelson 1977-5-30 3411 Humboldt Base of Eight Mile Ridge upstream from Anderson's Ford. 701 Comment
  HSC14796  Lupinus bicolor J. W. Johnson 1962-4-18 1249 Humboldt Arcata, Mad River County Park. Comment
  HSC89683  Lupinus bicolor Robin Bencie, James Jones, Rich Dwerlkotte 1989-4-3 22 Humboldt Manila, Manila Park near the beach strand of Humboldt Bay. Comment
  NY15833  Lupinus constancei T. W. Nelson 1982-7-9 7079 Humboldt Blocksburg quadrangle. Sepentine barrens on Mt. Lassic (Signal Peak) and saddle to east. 1767.8 Comment
  HSC59663  Lupinus latifolius George Kirn 1977-10-30 Humboldt Near rail bridge over Elk River 6 Comment
  POM276514  Lupinus latifolius subsp. latifolius Lyman D. Benson 1929-7-19 1867 Humboldt Road to Matole River above Bull Creek. Comment
  UC1223259  Lupinus lepidus var. lobbii Joseph P. Tracy 1940-7-7 16672 Humboldt ridge back Clear Lake (Grouse Mountain); , ridge back of Clear Lake 1524 Comment
  JEPS79930  Lupinus littoralis Joseph P. Tracy 1917-5-26 4785 A Humboldt Bucksport Bluff Northern Coast Ranges, Bucksport Bluff (at Eureka) 0 Comment
  UC1197272  Lupinus nanus Joseph P. Tracy 1914-5-14 4450 Humboldt Fort Seward; Northern Coast Ranges, Fort Seward 121 Comment
  UC1197251  Lupinus polyphyllus var. polyphyllus Joseph P. Tracy 1907-6-25 2576 Humboldt mouth Elk River (region about Humboldt Bay); Northern Coast Region, Humboldt Bay region, Elk River 0 Comment
  HSC34627  Lupinus rivularis Lon Hall 1975-3-27 294 Humboldt Near Shelter Cove, above large meadow in bend of Bear Creek 366 Comment
  HSC59681  Lupinus rivularis George Kirn 1977-10-12 Humboldt South shore Little River, 1/2 mile from mouth 8 Comment
  POM304177  Lupinus rivularis Ynez Whilton Winblad 1941-6-28 s.n. Humboldt Between Orick and Crescent City. Comment
  HSC102922  Luzula M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 1001 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  HSC56410  Luzula comosa Griswold, Butler 1979-7-11 7044 Humboldt Near Snow Camp Lake, close to the town of Willow Creek. 1393 Comment
  HSC97487  Luzula comosa Cara Witte 2007-5-23 109 Humboldt Near Grouse Mountain. Along 4N32. Approximately 0.5 miles south of intersection with 5N04 and 4N32E. 1425 Comment
  CAS-BOT-BC436746  Luzula comosa var. comosa Harley P. Chandler 1901-5-1 1159 Humboldt North Coast Ranges: Humboldt Bay 30 Comment
  CHSC115461  Luzula macrantha Peter F. Zika 2011-7-3 25497 Humboldt Titlow Hill Road, 3.7 road miles SE of Route 299 at Berry Summit, 1 air km SSW of Horse Mountain, Outer North coast Ranges. 1310 Comment
  CHSC118269  Luzula macrantha Peter F. Zika 2011-7-3 25499 Humboldt Titlow Hill Road, 4.2 road miles SE of Route 299 at Berry Summit, 0.8 air km SSW of Horse Mountain. Outer North Coast Ranges (NCoRO). 1390 Comment
  UCSB587  Luzula parviflora Parks, H.; Parks, S. 1952-06 Humboldt Bishop Pine Lodge; Trinidad Comment
  UC1152127  Luzula parviflora Joseph P. Tracy 1934-7-12 13376 Humboldt e side Big Lagoon; e side Big Lagoon Comment
  RSA590653  Lycopodiella inundata Doris K. Kildale 1929-7-10 s.n. Humboldt Big Lagoon Comment
  SEINET179615 Image available Lycopodium clavatum H. E. Parks, WK Parks 1932-7-30 1132 Humboldt 'Camp 21' Hammond Lumber Company Trinidad Comment
  JEPS432  Lysichiton americanus W. L. Jepson 1936-8-17 17916 Humboldt 2 mi. s. Field's Landing (near Still's ranch) Comment
  HSC103699  Lysichiton americanus M. R. Mesler 2014-9-3 1638 Humboldt Arcata, Jolly Giant Creek Rd 49 Comment
  HSC59495  Lysichiton americanus M. A. Ericksen 1979-4-20 212 Humboldt Adjacent to Cranell Rd. and Little River Dr. junction Comment
  JEPS45971  Lythrum hyssopifolia W. L. Jepson 1902-8-4 2146 Humboldt near Petrolia ( Expedition from Ukiah to the Hupa Indian Reservation) Comment
  UC1198466  Lythrum hyssopifolia Joseph P. Tracy 1920-8-15 5380 Humboldt Klamath River at Bluff Creek, Northern Coast Ranges Bluff Creek; Northern Coast Ranges, Klamath River, Bluff Creek 152 Comment
  UC524124  Lythrum hyssopifolia Ira L. Wiggins 1932-7-19 5889 Humboldt about 8 mi n of Arcata (near Clam Beach) Comment
  HSC15936  Lythrum hyssopifolia D. E. Anderson 1961-9-2 1761 Humboldt 3 mi. S of Cape Mendocino 3 Comment
  HSC70362  Madia elegans Gail Newton 1980-6-7 124 Humboldt Near Brush Mtn. 1128 Comment
  CAS-BOT-BC344356  Madia exigua Carl B. Wolf 1937-6-19 8910 Humboldt Van Duzen River, 3/10 mi. above Bridgeville 121 Comment
  HSC58706  Madia gracilis Griswold, Butler 1979-7-10 7133 Humboldt Near Board Camp Mtn., close to the town of Willow Creek. 1350 Comment
  RSA134601  Mahonia nervosa P. C. Everett, E. K. Balls 1959-10-25 23966 Humboldt 8.8 mi. ne. from Blue Lake, U.S. Hwy 299, Arcata to Willow Creek. 274 Comment
  UCSC000290  Mahonia nervosa Beryl O. Schreiber 1934-6-5 1137 Humboldt road to Redding, 20 miles east of Blue Lake Redding, Blue Lake Comment
  HSC15594  Maianthemum dilatatum Harvey Doerksen 1962-5-22 27 Humboldt Azalea Reserve State Park near Mad River Comment
  CAS-BOT-BC508507  Maianthemum dilatatum L. R. Abrams 1916-7-21 6147 Humboldt Grizzly Creeek Comment
  CAS-BOT-BC508521  Maianthemum dilatatum L. R. Abrams; R. Bacigalupi 1922-6-25 8300 Humboldt Near northern county line Comment
  HSC41355  Maianthemum racemosum subsp. amplexicaule Brad Klipfel 1974-8-2 507 Humboldt Horse Mtn. Comment
  RSA698056  Maianthemum racemosum subsp. amplexicaule J. R. Bruff 1937-8-17 924 Humboldt Richardson Grove. Comment
  CAS-BOT-BC511459  Maianthemum racemosum subsp. amplexicaule Huron H. Smith 1911-6-6 3795 Humboldt Field Museum of Natural History, Vances Camp 19 Comment
  HSC38998  Maianthemum racemosum subsp. amplexicaule Thomas W. Nelson, Jane P. Nelson 1976-5-31 2658 Humboldt County line, S of meadow along 5E27 just N of its junction with 1S07 1524 Comment
  HSC40874  Maianthemum racemosum subsp. amplexicaule Thomas W. Nelson 1976-7-9 3005 Humboldt S of Mt. lassic 1707 Comment
  RSA20847  Maianthemum stellatum Carl B. Wolf 1937-6-18 8887 Humboldt Table Bluff between Humboldt Bay and Eel River. 30 Comment
  RSA24192  Maianthemum stellatum Carl B. Wolf 1941-3-2 9982 Humboldt Along north bank of the Van Duzen River, 4.8 miles above Carlotta 61 Comment
  HSC6006  Malacothrix floccifera Paul Shields Aug 1955 Humboldt 7 mi. S of Myers Flat Comment
  HSC18698  Malus fusca Gerald T. Rood 1962-5-6 9 Humboldt Kneeland Rd. ca. 1 mi. W of Barry Rd. Comment
  UC555510  Malus fusca H. L. Mason 1932-7-21 7101 Humboldt Big Lagoon Comment
  UC168955  Marah oregana Joseph P. Tracy 1904-7-17 2120 Humboldt near Hydesville; Northern Coast Region 60 Comment
  HSC26658  Marah oregana Thomas W. Nelson 1973-5-22 920 Humboldt Growing on C.S.U.H. campus Comment
  RSA249711  Medicago polymorpha Robert F. Thorne 35258 Humboldt N edge of Eureka, E of Hwy. 101. 5 Comment
  CAS-BOT-BC271171  Melica aristata Joseph P. Tracy 1935-7-25 14236 Humboldt McKay Prairie, Trinity Summit 1584 Comment
  UC526920  Melica geyeri Joseph P. Tracy 1926-6-20 7650 Humboldt Horse Mountain; Northern Coast Ranges 1524 Comment
  UC573657  Melica geyeri H. S. Yates 1936-6-17 5693 Humboldt lower nw slope Buck Mtn. 792 Comment
  UC181238  Melica harfordii Joseph P. Tracy 1913-6-13 4116 Humboldt near summit of ridge between Van Duzen River and Mad River (on Dinsmore's Ranch); Northern Coast Ranges 1066 Comment
  UCD87544  Melica harfordii A. H. Shunk 1923-7-12 s.n. Humboldt Briceland. Comment
  UCD88675  Melica subulata R. Tofsrud 1949-7-1 s.n. Humboldt On road from Scotia to Capetown. Comment
  HSC43242  Melilotus albus R. Sutherland 1976-8-6 11 .6876 Humboldt 229 Comment
  UC1225834 Image available Mentha aquatica Joseph P. Tracy 1943-11-14 17451 Humboldt 2 mi s Field's Landing (along edges of foothills); s of Field's Landing 6 Comment
  UC418978  Mentha canadensis H. E. Parks 1930-9-14 728 Humboldt Big Lagoon Comment
  HSC36045  Mentha pulegium Thomas W. Nelson 1975-9-24 2200 Humboldt Beside Indianola Rd., ca. 1/2 mi. E of its junction with Hwy. 101 Comment
  HSC63583  Mentha pulegium J. P. Smith 1971-10-9 5004 Humboldt Mad River above the Fish Hatchery. Comment
  SEINET10498893  Mentha pulegium Mary Susan Taylor 1977-8-5 Taylor 1429 Humboldt Abundant around bridge over Eel River, at the turnoff from Hwy 1 to Ferndale, in Fernbridge. 2 Comment
  RSA53803  Mentzelia laevicaulis H. M. Pollard 1945-9-4 s.n. Humboldt Near Camp Creek, Klamath River Canyon. Comment
  SEINET7270591  Menziesia ferruginea W. Roderick 1967-7-22 s.n. Humboldt 0.5 mi S of Humboldt, along old Hwy. 101 152 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
  SEINET7887162 Image available Micropus californicus Unknown 1942-1 s.n. Humboldt Harris Road, 1 mile east of Garberville 30 Comment
  SEINET198985  Micropus californicus var. californicus S. K. Harris, JP Tracy 1942-6-15 sn Humboldt Harris Road 1 mi E of Garberville Comment
  UC275469  Microseris douglasii subsp. douglasii Joseph P. Tracy 1925-5-30 7022 Humboldt McClellan Mountain Northern Coast Ranges 822 Comment
  CAS-BOT-BC322676  Microseris laciniata Alice Eastwood; John Thomas Howell 1937-6-22 4738 Humboldt Near Alder Point Comment
  CAS-BOT-BC322685  Microseris laciniata M. S. Jussel 1931-5-2 s.n. Humboldt Near Garberville Comment
  UC204745  Microseris laciniata subsp. laciniata Joseph P. Tracy 1918-7-3 4997 Humboldt Shelter Cove Northern Coast Ranges, Shelter Cove 15 Comment
  UC50016 Image available Microseris laciniata subsp. laciniata Chesnut and Drew 1888-7-19 Humboldt e slope Pilot Ridge; ; Pilot Ridge, Humboldt Co. Comment
  UC1199450  Microseris nutans Joseph P. Tracy 1933-7-25 12886 Humboldt Grouse Mountain North Coast Ranges 1524 Comment
  UC582440  Microseris nutans Joseph P. Tracy 1935-7-27 14307 Humboldt McKay Prairie Trinity Summit 1584 Comment
  UC1196833  Mimulus arvensis Joseph P. Tracy 1925-5-25 13897 Humboldt Dobbyn Creek 152 Comment
  HSC20686  Mimulus aurantiacus var. aurantiacus S. R. Johnson 1965-4-16 35 Humboldt 1 mi. N of Luffenholtz Beach Comment
  HSC37239  Mimulus aurantiacus var. aurantiacus Lon Hall 1975-6-19 390 Humboldt About 2 mi. N of Shelter Cove Rd. on Horse Mtn. Rd. 549 Comment
  HSC99126  Mimulus breweri Cara Witte, Michael Scott 2007-6-22 341 Humboldt Board Camp Mountain. Road to Tri Board Camp. 1/5 mile after intersection with 4N38. 1486 Comment
  HSC20758  Mimulus dentatus R. E. Hafenfeld 1965-5-9 51 Humboldt Fern Canyon, Gold Bluff Beach Comment
  UC175712  Mimulus douglasii Joseph P. Tracy 1913-6-19 4208 Humboldt opposite Buck Mountain (Dinsmore's Ranch); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  HSC102176  Mimulus guttatus M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-3 1089 Humboldt Patterson Meadows 1555 Comment
  HSC89591  Mimulus guttatus M. Roantree 1985-5-15 45 Humboldt E side of Trinidad Head, on slope above Trinidad Bay beach Comment
  UC582481  Mimulus inodorus Joseph P. Tracy 1934-8-6 13561 Humboldt near Blue Lake; Mad River 15 Comment
  UC582480  Mimulus inodorus Joseph P. Tracy 1923-9-16 6551 Humboldt near South Fork; Trinity River Valley 182 Comment
  HSC44829  Mimulus moschatus Thomas W. Nelson, Jane P. Nelson 1977-7-4 3598 Humboldt Margin of pond above Alder Springs 1585 Comment
  RSA275293  Mimulus moschatus Thomas W. Nelson, Jane P. Nelson 1977-7-4 3606 Humboldt Along road north from Alder Springs. 1524 Comment
  POM273194  Mimulus moschatus var. sessilifolius Lyman Benson 1929-7-19 1873 Humboldt Mouth of Matole River. Comment
  HSC40019  Mimulus nanus var. nanus Thomas W. Nelson, Jane P. Nelson 1976-7-1 2911 Humboldt Along N side of Mt. Lassic (Signal Peak) 1738 Comment
  UC582441  Mimulus pilosus Joseph P. Tracy 1923-9-16 6552 Humboldt at mouth of South Fork Northern Coast Ranges, Trinity River Valley 152 Comment
  HSC55325  Mimulus primuloides var. primuloides Griswold, Butler 1979-7-12 7155 Humboldt Near Groves Prairie, close to the town of Willow Creek. 1256 Comment
  UC147905  Mimulus pulsiferae Joseph P. Tracy 1908-6 2698 Humboldt opposite Buck Mountain (along stream); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  RSA21094  Minuartia douglasii C. B. Wolf 1937-6-14 8822 Humboldt Kneeland Prairie; North Coast Range. 823 Comment
  HSC58019  Minuartia pusilla G. L. Clifton 1979-7-31 11821 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  UC1198866  Mitella caulescens Joseph P. Tracy 1942-6-28 17268 Humboldt Murphy Meadows Bald Mountain (edges of bog) 975 Comment
  HSC70773  Mitella diversifolia R. York 1980-5-17 553 Humboldt Near Le Perron Peak 1066 Comment
  CAS-BOT-BC433035  Mitella ovalis C. V. Piper 1921-5-22 s.n. Humboldt Eureka Comment
  HSC75445  Mitella trifida J. O. Sawyer 1980-7-18 3602 Humboldt North Trinity Mountain Research Natural Area, north of Mill Creek Lake to Red Cap Hole. Comment
  HSC98103  Mitella trifida Cara Witte 2007-6-27 366 Humboldt Forest Service Road 5N04. Near Grouse Mountain. Approximately 1/2 mile east of spring. 1561 Comment
  HSC73710  Moehringia macrophylla M. A. Baker 1980-7-15 2979 Humboldt Near Whiting Ridge 301 Comment
  UC1198328  Moehringia macrophylla Mrs. Emma N. Cathey 1939-4-16 Humboldt on Bull Creek-Mattole Road Panther Gap; , on Bull Creek-Mattole Road 762 Comment
  HSC48618  Moehringia macrophylla Mark Flippo 1978-5-20 88 Humboldt USFS Rd. 8N10 Comment
  HSC76519  Monardella odoratissima D. K. Imper 1981-8-12 903 Humboldt Near Tish Tang A Tang Creek. 1780 Comment
  RSA46838  Monardella odoratissima subsp. pallida Doris K. Kildale 1927-7-22 3814 Humboldt Lasseck s Peaks Comment
  HSC36491  Monardella sheltonii Thomas W. Nelson, James Nelson 1975-9-3 2193 Humboldt Along N side of Ashfield Butte Comment
  UC1225848  Monardella villosa subsp. villosa Joseph P. Tracy 1947-7-5 17782 Humboldt Trinity Summit, ridge top one mile west of Mud Springs. 1158 Comment
  RSA29091  Montia diffusa Lincoln Constance, A. A. Beetle 1940-5-17 2615 Humboldt In Shade of Cornus and Sambucus, cutover Pseudotsuga forest. Above Van Duzen River, 1 mile below Dinsmore s 762 Comment
  SEINET11942541  Montia diffusa H. P. Chandler 1901-1 1271 Humboldt Redwood Belt, North Coast Ranges 152 Comment
  CAS-BOT-BC445158  Montia parvifolia W. R. Dudley 1899-1-1 s.n. Humboldt Trinidad Head Comment
  CHSC84555  Montia parvifolia John Dittes; Josephine Guardino 2003-6-7 2003 -64 Humboldt Outer North Coast Range; ca. 2.9 air-mile northwest of Legget, ca. 5.2 air-mile southeast of Piercy, on eastern bank of South Fork Eel River. 182 Comment
  JEPS17216  Montia parvifolia Lincoln Constance 1934-5-31 744 Humboldt Bull Creek Flat, along Bull Creek (from w boundary of Park to Grasshopper Peak (Squaw Creek) road, n side of creek, South Fork Eel River); Bull Creek Region, South Fork Eel River, Bull Creek Comment
  HSC16103  Morella californica J. W. Johnson 1961-11-27 1431 Humboldt Woods along the trail of the Hunt Farm, Samoa Comment
  HSC49508  Morella californica R. York 1979-4-13 221 Humboldt N of College Cove Comment
  HSC59071  Morella californica Thomas Wood 1979-5-4 153 Humboldt Big Lagoon Bog, E edge of bog 3 Comment
  UC526744  Muhlenbergia filiformis Joseph P. Tracy Jul 16 1930-Jul 19 1930 8920 Humboldt McKay Camp Northern Coast Ranges, South Fork Mountain (in wet meadow) 1676 Comment
  UCD86610  Muhlenbergia filiformis Don Hagar 1957-8-6 s.n. Humboldt Jackson Hole, west of the Trinity Summit area. 1645 Comment
  UC1145147  Muhlenbergia mexicana Joseph P. Tracy 1916-9-5 4774 Humboldt 4 mi. above mouth of S. Fork Eel R.; S. Fork Eel R. 60 Comment
  UC1222233  Myosotis discolor Joseph P. Tracy 1942-6-15 17116 Humboldt Englewood Prairie Comment
  UC1239639  Myosotis discolor Joseph P. Tracy 1924-8-3 6748 Humboldt Stone Lagoon Northern Coast Region, Stone Lagoon 6 Comment
  HSC3737  Myosotis discolor D. E. Anderson 1963-5-25 2490 Humboldt Ca. 1 mi. S of Capetown Comment
  CAS-BOT-BC101671  Myrica californica Joseph P. Tracy 1931-4-12 9332 Humboldt Dows Prairie 60 Comment
  JEPS30071  Myrica californica Joseph P. Tracy 1930-5-18 8698 Humboldt Rohnerville Golf Course Northern Coast Ranges, Rohnerville Golf Course 152 Comment
  RSA174002  Myrica californica Robert F. Thorne 1957-9-2 19009 Humboldt Eel River. Burlington State Park, just S of Weott. Comment
  HSC41673  Myriophyllum aquaticum Charles O'Neil Humboldt McKinleyville, ponds W of Hwy. 101 Comment
  RSA77516  Myriophyllum sibiricum F. W. Peirson 1923-7-11 3786 Humboldt 20 miles north of Eureka. Comment
  CAS-BOT-BC515985  Narthecium californicum Joseph P. Tracy 1930-7-17 9003 Humboldt South Fork Mountain, at McKay Camp 1676 Comment
  SEINET201033  Nassella pulchra Joseph P. Tracy 1927-5-8 7963 Humboldt Phillipsville. 122 Comment
  UC60875  Navarretia intertexta Harley P. Chandler Jun 1901 1542 Humboldt Klamath River North Coast Ranges 426 Comment
  UC1052479  Navarretia squarrosa H. E. Parks 1952-7 Humboldt Trinidad Comment
  UC133642  Navarretia tagetina Joseph P. Tracy 1908-6 2818 Humboldt opposite Buck Mountain; Northern Coast Ranges, Valley of Van Duzen River 304 Comment
  HSC13590  Nemophila menziesii Elrid H. Spinas 1948-5-15 4 Humboldt Horse Mtn. Comment
  UC1103813  Nemophila pedunculata Joseph P. Tracy 1923-4-15 6181 Humboldt Berry's Northern Coast Ranges, Redwood Creek 274 Comment
  CAS-BOT-BC400074  Nuphar polysepala L. R. Abrams 1918-6-16 7160 Humboldt Willow Creek Comment
  HSC37167  Nuttallanthus texanus J. D. Ackerman 1974-6-12 319 Humboldt 1 mi. N of Manila between Mad River Slough and sand dunes Comment
  CAS-BOT-BC142251  Oemleria cerasiformis C. Hart Merriam 1918-8-11 s.n. Humboldt Blue Lake Comment
  JEPS44827  Oemleria cerasiformis W. L. Jepson 1902-7-1 1974 Humboldt Redwood Creek; Hupa Road Comment
  UC1222755  Oenanthe sarmentosa Joseph P. Tracy 1950-9-2 19348 Humboldt 2 mi. s. of town Field's Landing (edges of foothills) 6 Comment
  RSA0059232  Orobanche californica subsp. californica Harold E. Parks, Joseph P. Tracy 1924-8-3 6761 Humboldt Big Lagoon. 6 Comment
  CAS-BOT-BC499865  Orobanche fasciculata L. R. Abrams 1918-6-15 7119 Humboldt Brannan Mt. near Willow Creek 1371 Comment
  RSA80246  Orthocarpus erianthus var. gratiosus F. W. Peirson 1941-7-28 13107 Humboldt Along road to Patrick Point, State Park. Comment
  HSC56000  Orthocarpus imbricatus Walter Overton, Marvin Butler 1979-7-31 11445 Humboldt Near Water Dog Lakes, close to the town of Hoopa 1830 Comment
  HSC100677  Orthocarpus lithospermoides Carl C. Marshall Jun 1887 406 Humboldt Spruce Grove. Comment
  HSC31140  Osmorhiza berteroi J. O. Sawyer, R. J. Cole 1970-6-24 2271 Humboldt S of Mill Creek Gap, FS 10N02 1433 Comment
  HSC74741  Osmorhiza berteroi Gail Newton 1981-7-24 2323 Humboldt Near Bug Creek Butte 1417 Comment
  UC642235  Osmorhiza berteroi Joseph P. Tracy 1930-7-17 9018 Humboldt near McKay Camp; South Fork Mountain 1676 Comment
  RSA430437  Osmorhiza berteroi Lyman Benson 1928-7-10 405 Humboldt Weott Ranger Station. Seaward N Coast mtn range, S. Fork Eel River drainage. 61 Comment
  HSC55852  Osmorhiza occidentalis G. L. Clifton, Terry Griswold 1979-7-25 10822 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1814 Comment
  HSC21586  Osmorhiza purpurea B. R. Templeton 1962-4-14 Humboldt 1 mi. W of Orleans on Hwy. 35 Comment
  CSUSB849  Oxalis oregana Keith Thompson 1972-3-27 Humboldt Maple Cr. 853 Comment
  HSC16703  Oxalis oregana D. E. Anderson 1961-8-11 1726 Humboldt E of Humboldt State University campus 30 Comment
  HSC16711  Oxalis oregana D. E. Anderson 1965-5-15 3689 Humboldt About 7 mi. N of Hoopa on Bloody Camp Prairie Rd. Comment
  SBBG21910  Oxalis oregana D. Myrick 1964-7-26 980 Humboldt Hwy 101 near Garberville 152 Comment
  SBBG67545  Oxalis oregana L. Rowntree 1931-7-24 Humboldt Carlotta Comment
  SEINET3347646 Image available Oxalis oregana Noel H. Holmgren, James L. Reveal 1966-6-8 2658 Humboldt Coast Range; East of Arcata, 1.5 miles S of Korbel 274 Comment
  SEINET3347662 Image available Oxalis oregana Bassett Maguire, Ruth Maguire, C. B. Maguire 1934-6-8 15204 Humboldt Bolling Grove State Park; unspecified Comment
  HSC29727  Oxalis oregana J. D. Ackerman, A. M. Montalvo 1973-4-29 75 Humboldt Previously logged area, 2 mi. NE of Kneeland. 457 Comment
  HSC8609  Oxalis oregana R. A. Rasp 1964-4-5 30 Humboldt 7 mi. past Hoopa on Willow Creek Rd. Comment
  POM353445  Oxalis oregana J. P. Smith 1973-5-26 6852 Humboldt Scotia Bluffs along the Eel River near Rio Dell. Comment
  RSA189638  Oxalis oregana Noel Holmgren, James L. Reveal 1966-6-8 2658 Humboldt Coast Range, east of Arcata, 1.5 miles south of Korbel. 274 Comment
  RSA34052  Oxalis oregana A. A. Heller 1923-7-10 13787 Humboldt Humboldt Camp between Scotia and Pepperwood Comment
  UC1103427  Oxalis oregana Joseph P. Tracy 1927-5-15 8044 Humboldt Sugar Bowl Mt., on rd between Willow Creek and Hoopa Northern Coast Ranges 457 Comment
  HSC89720  Oxalis pes-caprae Larry Levine, Manuel Pachero, , Robert Murphey 1989-2-24 3 Humboldt HSU campus, garden plot SE of Buck House 40 Comment
  HSC55133  Oxalis trilliifolia G. L. Clifton, Griswold 1979-8-1 11967 Humboldt Near Mill Creek Lakes, close to the town of Hoopa 1707 Comment
  POM126096  Panicum acuminatum var. acuminatum Joseph P. Tracy 1906-7-1 2517 Humboldt At Eureka 0 Comment
  POM204618  Panicum acuminatum var. acuminatum A. S. Hitchcock 1915-7-13 527 Humboldt Eureka Comment
  UC1145221  Panicum acuminatum var. acuminatum Joseph P. Tracy 1938-9-25 16172 Humboldt Bald Mountain at Lake Prairie; Bald Mountain at Lake Prairie 1066 Comment
  CAS-BOT-BC253706  Panicum capillare Carl D. Duncan 1920-9-22 s.n. Humboldt Hoopa Valley Comment
  UC1103771  Panicum capillare Joseph P. Tracy 1934-8-14 13580 Humboldt 1 mi above mouth South Fork Eel River; North Coast Ranges, South Fork Eel River 60 Comment
  SEINET182648 Image available Parapholis incurva S. K. Harris, J. P. Tracy 1936-6-6 3218 Humboldt Eureka, California Comment
  HSC37849  Parentucellia viscosa Peter Sorensen 1976-6-2 Humboldt Woodley Island Comment
  UC1222448  Parentucellia viscosa Joseph P. Tracy 1934-6-18 13230 Humboldt Eureka 6 Comment
  UC1409051  Parentucellia viscosa Robert F. Thorne and P. Everett 1965-8-7 35202 Humboldt Samoa Peninsula Comment
  UC249858  Paspalum distichum Joseph P. Tracy with H. E. Parks 1924-8-3 6779 Humboldt Big Lagoon; Northern Coast Region, Big Lagoon 6 Comment
  UC642347  Pastinaca sativa Joseph P. Tracy 1937-10-31 15694 Humboldt Rio Dell 30 Comment
  SJSU2547  Pectiantia ovalis H. L. Buckalew 1962-6-28 Humboldt Prairie Cr Redwoods State Park Comment
  HSC45648  Pedicularis densiflora Diane L. Reed 1978-4-22 14 Humboldt Tish Tang Campground, 5 mi. N of Willow Creek on Hwy. 96 Comment
  JEPS10346  Pedicularis densiflora Lincoln Constance 1934-6-7 832 Humboldt Johnson Prairie; Bull Creek Region, South Fork Eel River Comment
  HSC20928  Pedicularis densiflora R. A. Rasp 1964-4-25 33 Humboldt 2.5 mi. E of Willow Creek off of Hwy. 299 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
  UC1314350  Pellaea andromedifolia R. M. and A. F. Tryon 1958-6-5 5556 Humboldt 3.8 mi w Redway (on rd to Briceland) Comment
  JEPS19083  Pellaea brachyptera Joseph P. Tracy 1937-7-24 15516 Humboldt Devil's Hole Trinity Summit 1676 Comment
  UC1198048  Penstemon anguineus Doris Kildale Aug. 1925 Humboldt Trinity Summit Comment
  SDSU10915  Penstemon anguineus D. F. Howe 1964-8-7 3945 Humboldt 6.2 miles from #96 on Mill Creek Road, Hoopa Valley. 1067 Comment
  RSA309621  Penstemon deustus Walter Wisura 1983-9-3 3931 Humboldt About 6 mi N of Weitchpec, along Klamath River. Comment
  HSC74399  Penstemon laetus subsp. sagittatus Gail Newton 1980-6-28 731 Humboldt Near Mad River Butte. 1536 Comment
  HSC32129  Penstemon purpusii D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5585 Humboldt Mt. Lassic and two smaller peaks to immediate E 1768 Comment
  HSC1085  Pentagramma triangularis J. Wendell Howe May 1931 Humboldt Horse Mtn. Comment
  UC205463  Perideridia gairdneri subsp. borealis Joseph P. Tracy 1920-11-14 5411 Humboldt Dows Prairie Northern Coast Ranges ((same place as #5392)) 60 Comment
  JEPS14205  Perideridia gairdneri subsp. gairdneri Joseph P. Tracy 1936-10-24 15204 Humboldt hillside 2 mi s Field's Landing; Northern Coast Region, <Region> around Humboldt Bay 9 Comment
  UC642345  Perideridia howellii Joseph P. Tracy 1930-10-26 9237 Humboldt Valley of South Yager Creek 762 Comment
  HSC56122  Perideridia parishii subsp. latifolia G. L. Clifton, Terry Griswold 1979-8-1 11909 Humboldt Near Mill Creek Lakes, close to the town of Hoopa. 1692 Comment
  HSC75957  Perideridia parishii subsp. latifolia Overton, Butler 1979-7-24 9743 Humboldt Near Black Rock, close to the town of Willow Creek. 1554 Comment
  UC1197119  Perideridia parishii subsp. latifolia E. Ethel Tracy 1919-8-1 Humboldt Trinity Summit Northern Coast Ranges 1524 Comment
  CAS-BOT-BC419195  Persicaria maculosa Henry M. Pollard 1946-9-1 s.n. Humboldt Near Wilson Creek, Orleans region Comment
  UC175181  Petasites frigidus var. palmatus Joseph P. Tracy 1913-3-9 4014 Humboldt near Hydesville (along Van Duzen River); Northern Coast Region, Van Duzen River 60 Comment
  UCD134927  Petasites frigidus var. palmatus R. N. Raynor 1935-3-13 s.n. Humboldt Fort Seward. Comment
  HSC63487  Petrorhagia dubia M. A. Baker 1977-6-6 381 Humboldt Hoopa Indian Reservation Comment
  RSA170270  Phacelia bolanderi Joseph P. Tracy 1916-5-31 4704 Humboldt Stitz Creek. Along Eel River South Fork to Scotia. 61 Comment
  HSC30745  Phacelia corymbosa D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5621 Humboldt Mt. Lassic and two smaller peaks to immediate E 1768 Comment
  UC660089  Phacelia heterophylla subsp. virgata G. L. Stebbins Jr. 1941-5-27 3111 Humboldt 1/4 mi w Bridgerville (on hwy to Eureka) Comment
  HSC57422  Phacelia mutabilis G. L. Clifton, Griswold 1979-7-26 10193 Humboldt Near Salmon Mtn., close to the town of Forks of Salmon 2058 Comment
  RSA428107  Phacelia mutabilis Brad W. Klipfel 1973-7-1 143 Humboldt Along ridge trail south east of North Trinity Mountain 1829 Comment
  HSC99429  Phacelia procera K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-7 78 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  UC1541532  Phalaris angusta Harold E. Parks May 1934 4950 Humboldt head of South Humboldt Bay Comment
  UCSC000088  Phalaris californica H. L. Person 1932-5-11 s.n. Humboldt near Arcata - Eureka 15 Comment
  HSC98094  Philadelphus lewisii Cara Witte 2007-7-11 484 Humboldt Cold Spring. 1/2 mile south of Titlow Hill. 1396 Comment
  UC183571  Philadelphus lewisii Joseph P. Tracy 1912-7-4 3722 Humboldt near Hydesville; Northern Coast Region 60 Comment
  HSC26164  Phleum alpinum J. P. Smith, Steve Selva 1970-6-30 4127 Humboldt Comment
  HSC58543  Phleum alpinum Overton, Butler 1979-7-23 9546 Humboldt Near Titlow Hill, close to the town of Willow Creek. 1280 Comment
  UC526750  Phleum alpinum Joseph P. Tracy 1932-7-10 10388 Humboldt Corral Prairie Trinity Summit; Klamath Mountains, , Corral Prairie 1524 Comment
  HSC24107  Phlox adsurgens J. O. Sawyer 1970-6-27 2305 Humboldt Site 318. 1494 Comment
  RSA256575  Phlox adsurgens J. O. Sawyer 1970-6-24 2262 Humboldt S of Mill Creek Gap. F.S. Road 10N02. 1433 Comment
  UC1191119  Phlox adsurgens Joseph P. Tracy 1925-6-7 7058 Humboldt Willow Creek Canyon Northern Coast Ranges 609 Comment
  UC1198553  Phlox douglasii subsp. rigida Joseph P. Tracy 1927-6-12 8142 Humboldt Horse Mountain 1432 Comment
  HSC15928  Phoradendron serotinum subsp. tomentosum M. C. Hartman 1963-5-11 35 Humboldt Berry summit Comment
  RSA13440  Phyllospadix torreyi H. E. Parks 1933-11-12 s.n. Humboldt Spruce Cove, Trinidad. Comment
  CAS-BOT-BC140581  Physocarpus capitatus Thomas Nelson; Linda Barker 1977-6-3 3387 Humboldt On flood plain of Mad River at south end of Mad River Bridge 53 Comment
  CAS-BOT-BC140586  Physocarpus capitatus Doris K. Kildale 1926-5-15 3158 Humboldt Petrolia Bridge, Mattole River Valley Comment
  HSC18709  Physocarpus capitatus W. R. Rogers 1966-5-1 217 Humboldt N bank of Mad River Comment
  RSA46805  Physocarpus capitatus Doris K. Kildale 1927-5-15 3158 Humboldt Petrolia Comment
  HSC89481  Picea sitchensis P. A. Daly 1986-3-12 72 Humboldt Trinidad Head, along trail 61 Comment
  JEPS46733  Picea sitchensis Goddard Humboldt Comment
  NY99565  Picea sitchensis C. B. Wolf 1930-10-28 Garden Field No. 1037 -(seed) Humboldt 5 miles south of Ferndale, on road to Petrolia 152.4 Comment
  UCD134309  Picea sitchensis Linda M. Barker 1976-4-13 1376 Humboldt Lanphere-Christensen Dunes, coastal forest and dunes 3 miles west of Arcata. Comment
  UCD134310  Picea sitchensis Roman Gankin 1965-8-6 551 Humboldt 1.3 miles south of Samoa, Samoa Peninsula. Comment
  HSC98703  Pinus attenuata Cara Witte 2007-9-3 640 Humboldt Horse Mountain Botanical Area. Forest Service Road 6N36. 1448 Comment
  HSC99044  Pinus attenuata Cara Witte 2008-6-15 752 Humboldt Horse Mountain Botanical Area. Forest Service Road 6N36. 1 mile north of intersection with 6N36A. 1428 Comment
  HSC1483  Pinus contorta R. I. Bonn 1965-5-9 46 Humboldt 4 mi. W of Arcata on Lanphere Rd. Comment
  MACF017417  Pinus contorta Trudy R. Ericson 1974-8-5 198 Humboldt Hwy 255 between Eureka and Arcata, near the shore Comment
  CAS-BOT-BC73151  Pinus jeffreyi Joseph P. Tracy; H. E. Parks 1934-6-14 11030 Humboldt Horse Mountain 1432 Comment
  UC519311  Pinus jeffreyi Joseph P. Tracy 1983-8-30 13007 Humboldt Horse Mountain Northern Coast Ranges, Horse Mountain 1371 Comment
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Jun 28 2015
  UC902029  Pinus jeffreyi Joseph P. Tracy 1949-7-19 18387 Humboldt Grouse Mountain 1524 Comment
  CAS-BOT-BC78979  Pinus muricata Doris K. Kildale 1927-3-27 2998 Humboldt on highway 1 mile north of Trinidad Comment
  CAS-BOT-BC79031  Pinus ponderosa Doris K. Kildale 1927-5-5 3108 Humboldt Elk Ridge Comment
  UC63995  Pinus sabiniana Mrs. M. H. Manning Apr 1 1902-May 1 1902 Humboldt Hupa Comment
  JEPS64429  Piperia elegans W. L. Jepson 1932-7-25 16399 Humboldt Bull Creek South Fork Eel River Comment
  CAS-BOT-BC136587  Piperia michaelii L. B. Kildale 1930-8-3 10495 Humboldt Field redacted by CAS, contact the data manager for more information Comment
  HSC98975  Piperia unalascensis Cara Witte 2008-7-7 834 Humboldt Horse Mountain Botanical Area. 1/4 mile east of intersection National Forest 1, Forest Service Roads 6N36 and 6N38. 1415 Comment
  UC666983  Piperia unalascensis Joseph P. Tracy 1933-7-25 12880 Humboldt Grouse Mountain 1524 Comment
  HSC98111  Piperia unalascensis Cara Witte 2007-6-26 356 Humboldt Horse Mountain Botanical Area. Forest Service Road 6N36A. 1348 Comment
  HSC40374  Pittosporum tenuifolium Linda M. Barker 1976-10-7 1703 Humboldt 3 mi. W of Arcata. Comment
  HSC35168  Pityopus californicus S. Veirs, G. Lester, R. Yearout 1975-7-10 744 Humboldt Redwood National Park, Gann's Woods. 366 Comment
  CAS-BOT-BC458134  Pityopus californicus Doris K. Kildale 1926-6-6 2110 Humboldt Trail to Gold Bluffs Comment
  CAS-BOT-BC228212  Plagiobothrys hispidulus Joseph P. Tracy 1932-7-10 10386 Humboldt Klamath Mountains, Trinity Summit. At Corral Prairie 1524 Comment
  UC179943  Plagiobothrys reticulatus Joseph P. Tracy 1914-5-30 4486 Humboldt near Hydesville; Northern Coast Region 60 Comment
  UC526827  Plagiobothrys reticulatus Joseph P. Tracy 1930-6-15 8764 Humboldt Dobbyn Creek Northern Coast Ranges, Dobbyn Creek 152 Comment
  SEINET10456365  Plagiobothrys reticulatus Harold E. Parks Parks 24042 Humboldt Spruce Cove. 64 Comment
  JEPS60974  Plagiobothrys reticulatus var. reticulatus Joseph P. Tracy 1918-7-5 5010 Humboldt White Thorn Valley Northern Coast Ranges 304 Comment
  JEPS60982  Plagiobothrys reticulatus var. reticulatus Joseph P. Tracy 1909-5-2 2960 Humboldt Eureka Northern Coast Region 0 Comment
  JEPS61045  Plagiobothrys reticulatus var. rossianorum Joseph P. Tracy 1942-5-16 17337 Humboldt Garberville 152 Comment
  UC1196145  Plantago erecta Joseph P. Tracy 1946-6-2 17553 Humboldt near Samoa; Humboldt Bay 6 Comment
  HSC16836  Plantago lanceolata A. E. Inman 1962-5-25 Humboldt Mad River, Lindsey Creek junction, 200 yds. W of Lindsey Creek Comment
  HSC16840  Plantago lanceolata D. B. Bader 1963-4-1 13 Humboldt Second of the Clam Beach lagoons, W of Hwy. 101 Comment
  UC585988  Plantago lanceolata Joseph P. Tracy 1924-9-21 6898 Humboldt Eureka Northern Coast Ranges 0 Comment
  HSC16841  Plantago lanceolata D. E. Anderson 1961-8-25 1746 Humboldt 1.5 mi. S of Trinidad Comment
  HSC55213  Platanthera dilatata var. leucostachys Walter Overton 1979-8-1 12369 Humboldt Near Mill Creek, Middle Fork, close to the town of Hoopa. 1341 Comment
  HSC99138  Platanthera dilatata var. leucostachys Cara Witte 2008-8-6 1002 Humboldt Board Camp Mountain; 1 mile south of Forest Service Road 4N38 and National Forest 1 intersection. 1416 Comment
  RSA21199  Platanthera leucostachys Carl B. Wolf 1937-8-10 9087 Humboldt Big Lagoon, bog at state park. 6 Comment
  UC1037486  Platanthera leucostachys Milo S. Baker 1927-8-21 2480 b Humboldt near Bald Mt. 914 Comment
  HSC54529  Platanthera sparsiflora Overton, Butler 1979-7-23 9471 Humboldt Near Horse Mtn. Creek, close to the town of Willow Creek 1326 Comment
  HSC99365  Platanthera sparsiflora K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-6-24 14 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-BC91642  Platystemon californicus W. R. Dudley 1899-6-1 s.n. Humboldt Eureka Peninsula. Comment
  HSC16799  Platystemon californicus P. N. Slattery 1963-4-27 42 Humboldt Clam Beach Comment
  HSC26332  Platystemon californicus Thomas W. Nelson 1971-4-4 369 Humboldt Along the Samoa Peninsula adjacent to the Coast Gaurd Station Comment
  HSC21694  Plectritis congesta subsp. brachystemon H. E. Parks, J. P. Tracy 1934-6-14 11022 Humboldt Horse Mtn. 1220 Comment
  HSC92237  Plectritis congesta subsp. brachystemon John Cromwell, Julie Schneider, A. Thoele 1994-3-19 6 Humboldt Hell's Half Acre, trailhead located 12 mi. S on S Fork Rd. off Hwy. 299 457 Comment
  HSC77899  Plectritis congesta subsp. congesta L. P. Janeway, Paul Wilson 1984-5-7 765 Humboldt North Spit of Humboldt Bay, near BLM lands near Coast Guard Station, 100 m NW of 'Flag 1 3 Comment
  HSC76591  Pleuricospora fimbriolata Teresa Prendusi 1981-7-7 140 Humboldt Near Slate Creek Butte. 1158 Comment
  UC552670  Pleuropogon californicus Joseph P. Tracy 1935-5-25 13846 Humboldt Fort Seward 106 Comment
  UC1103803  Pleuropogon refractus Joseph P. Tracy 1926-5-22 7514 Humboldt Prairie Creek; Northern Coast Ranges, Prairie Creek 152 Comment
  UCD90104  Pleuropogon refractus R. Tofsrud 1949-7-22 s.n. Humboldt on road between Scotia and Capetown. Comment
  HSC40866  Poa annua Linda M. Barker 1976-4-30 1399 Humboldt 3 mi. W of Arcata Comment
  CAS-BOT-BC254713  Poa bolanderi Joseph P. Tracy 1932-7-12 10464 Humboldt Klamath Mountains. Head of Brett Hole 1828 Comment
  HSC10642  Poa bolanderi C. S. Chavez 1965-5-7 67 Humboldt Redwood forest behind H.S.C. campus. Comment
  RSA44528  Poa bulbosa Henry M. Pollard 1948-7-17 s.n. Humboldt Banks of Klamath River, Orleans Comment
  UC1103189  Poa bulbosa Joseph P. Tracy 1938-7-4 15988 Humboldt Valley of S Yager Creek 762 Comment
  HSC10682  Poa confinis R. H. Berg 1963-5-8 66 Humboldt On sand dunes near Lanphere's, Arcata. Comment
  UCD90512  Poa confinis Linda M. Barker 1976-4-30 1412 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  UC573883  Poa douglasii H. S. Yates 1936-6-16 5650 Humboldt 1/2 mi sw Samoa; Eureka Quadrangle 6 Comment
  SEINET236442 Image available Poa howellii Joseph P. Tracy 1906-6-10 2486 Humboldt Kneeland Prairie. 762 Comment
  UC1103180  Poa kelloggii Joseph P. Tracy 1918-5-12 4931 Humboldt along old rd. at Eureka; Northern Coast Ranges, Eureka 0 Comment
  SEINET10855127  Poa kelloggii Joseph P. Tracy 1911-6-4 Tracy 3219 Humboldt Along Little River Humboldt County 5 miles from the coast. Comment
  CAS-BOT-BC254284  Poa macrantha W. R. Dudley 1899-6-1 s.n. Humboldt Eureka Peninsula Comment
  HSC10699  Poa macrantha R. C. Drewien 1963-5-8 11 Humboldt S of the Mad River, Lanpheres' property. Comment
  RSA21035  Poa macrantha C. B. Wolf 1937-6-18 8904 Humboldt Centerville Beach 3 Comment
  UCD91545  Poa macrantha Freed W. Hoffman 1946-5-21 1719 Humboldt near Eel River. Comment
  HSC98586  Poa palustris Cara Witte 2008-8-6 1007 Humboldt Board Camp Mountain; 1 mile south of Forest Service Road 4N38 and National Forest 1 intersection. 1416 Comment
  RSA10072  Poa pratensis Joseph P. Tracy 1926-5-9 7469 .5 Humboldt Valley of south Yager Creek Comment
  HSC98530  Poa pratensis subsp. pratensis Cara Witte 2007-7-8 442 Humboldt Board Camp Mountain. Trail 4E28. 1496 Comment
  SEINET200626 Image available Poa secunda Joseph P. Tracy 1932-7-17 10693 Humboldt Klamath Mountains Trinity Summit, Humboldt county, Head of Devils Hole 1829 Comment
  UC525662  Poa secunda subsp. secunda Joseph P. Tracy 1932-7-17 10693 Humboldt head of Devil's Hole Trinity Summit; Klamath Mts 1828 Comment
  UC277172  Poa trivialis Joseph P. Tracy 1921-4-24 5451 Humboldt Phillipsville Flat, S Fork of Eel River Phillipsville Flat; Northern Coast Ranges 91 Comment
  UCD92117  Poa trivialis H. S. Yates 1936-6-16 6582 Humboldt near Bayside. Comment
  CAS-BOT-BC244298  Podagrostis humilis Joseph P. Tracy 1930-7-16 8989 Humboldt South Fork Mountain, at McKay Camp 1676 Comment
  UC1988935  Pogogyne zizyphoroides Joseph P. Tracy 1938-7-5 16005 Humboldt Carlotta 5 miles east of town, open flat by old Strong's District School House 45 Comment
  HSC99257  Polygala californica D. E. Anderson 1965-5-1 3570 Humboldt Along Bluff Creek Rd., 2 mi. from its junction with Hwy. 96 Comment
  RSA506995  Polygonum amphibium var. emersum H. E. Parks 1934-08 5165 Humboldt Hulmboldt County: Big Lagoon, Host of rust Comment
  CAS-BOT-BC414301  Polygonum aviculare subsp. neglectum H. M. Pollard 1942-9-12 s.n. Humboldt Near Orleans Comment
  POM312530  Polygonum lapathifolium S. Galen Smith, Malcolm A. Nobs 1949-8-9 1232 Humboldt Marshy pond on Southern side of the town of Blue Lake Comment
  CAS-BOT-BC109182  Polygonum paronychia Frank W. Peirson 1941-7-29 13109 Humboldt State Little River Beach Park. Comment
  UC55512  Polygonum persicaria Mrs. M. H. Manning 1900-1 Humboldt Hoopa Comment
  CAS-BOT-BC419957  Polygonum polygaloides subsp. kelloggii Joseph P. Tracy 1935-7-28 14316 Humboldt Trinity Summit. Head of Devil's Hole 1828 Comment
  JEPS51274  Polygonum polygaloides subsp. kelloggii Joseph P. Tracy 1930-7-17 9010 Humboldt near McKay Camp; South Fork Mountain 1676 Comment
  UC1052470  Polygonum sachalinense H. E. and S. T. Parks July 1952 24448 Humboldt Hwy 10 s Elk River Bridge Comment
  CDA2916  Polygonum sachalinense T. C. Fuller 1968-7-3 17443 Humboldt West side of the south-bound lanes of Highway 101 freeway, just north of the South Bay Depot Road, Fields Landing. 0 Comment
  HSC1129  Polypodium californicum W. R. Supernaugh, Jr. 1964-12-11 13 Humboldt 200 yards S of Trinidad harbor Comment
  HSC34520  Polypodium californicum Thomas W. Nelson, J. D. Ackerman 1974-5-25 260 Humboldt S Trinidad Beach, S of Trinidad Head and Trinidad Comment
  RSA136736  Polypodium glycyrrhiza I. L. Wiggins 1957-6-20 14134 Humboldt East side of highway, Trinidad Comment
  HSC26398  Polypodium scouleri T. O. Osborne 1970-9-16 33 Humboldt Trinidad Bay, Prisoner Rock Comment
  JEPS93137  Polypodium scouleri M. Wetherwax 1992-5-20 2434 Humboldt coastal bluff s side of Wedding Rock; Patrick's Point State Park 30 Comment
  HSC1112  Polypodium scouleri D. E. Anderson 1962-2-10 1918 Humboldt Old Hwy. 101, S of Trinidad Comment
  UCSB51220  Polypodium scouleri Almanza, Ed 1976-7-15 Humboldt Cemetary road, east of Hwy. 101, Trinidad 15 Comment
  HSC65985  Polystichum imbricans Gail Newton 1980-7-23 1714 Humboldt Near Packsaddle Ridge 1463 Comment
  HSC55089  Polystichum munitum G. L. Clifton, Griswold 1979-7-31 11764 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa. 1845 Comment
  UC1193410  Polystichum munitum P. Zinke 1950-10-11 187 Humboldt 4 mi se Punta Gorda (Lake Ridge); Quadrangle 28C1 243 Comment
  CAS-BOT-BC76661  Polystichum munitum Joseph P. Tracy 1933-7-21 12813 Humboldt Riverside Auto Park on Van Duzer River, 5 miles E of Carlotta. 60 Comment
  SEINET10793992  Polystichum munitum J. Richard Abbott, B. S. Carlsward 1999-7-7 Abbott 13008 Humboldt Leggett; Redwoods River Resort, 75000 Highway 101. Comment
  UCSB8319  Polystichum munitum Robbins, G. 1936-8-1 Humboldt Near Carlotta. Comment
  HSC66076  Polystichum scopulinum M. S. Taylor, J. D. Jokerst, L. Ahart 1980-2-8 3214 Humboldt Humboldt Peak, N outcrop on the top 2155 Comment
  CAS-BOT-BC102909  Populus trichocarpa Doris K. Kildale 1927-5-15 3155 Humboldt Petrolia, Mattole River Valley Comment
  UC213000  Populus trichocarpa Joseph P. Tracy 1919-9-19 5258 Humboldt Trinity Summit; Northern Coast Ranges, Trinity Summit 1828 Comment
  UC492234  Populus trichocarpa Joseph P. Tracy 1932-4-24 9801 Humboldt South Fork of Eel River between Miranda and Redway; North Coast Ranges, South Fork of Eel River 91 Comment
  JEPS395  Potamogeton foliosus Joseph P. Tracy 1934-8-14 13588 Humboldt South Fork of Eel River (midway between Miranda and Garberville) 91 Comment
  CAS-BOT-BC453910  Potamogeton pectinatus Robert F. Thorne; P. Everett 1965-8-9 35343 Humboldt Along Hwy. 101 about 3 mi. N of Eureka 1 Comment
  HSC95736  Potentilla anserina subsp. pacifica Steven Lee 2004-4-10 11 Humboldt Drive from intersection of V St. and Samoa Blvd. in Arcata 1/8 mi. towards parking area to S 200 Comment
  UC1321457  Potentilla anserina subsp. pacifica Arne Henrik Rousi 12 Humboldt Comment
  HSC34288  Potentilla gracilis K. Irwin 1975-8-16 Humboldt Grogans Hole area. Comment
  CAS-BOT-BC158495  Potentilla gracilis var. gracilis Volney Rattan 1878-1-1 s.n. Humboldt Unspecified Comment
  HSC98037  Potentilla gracilis var. gracilis Cara Witte 2007-7-17 540 Humboldt Board Camp Mountain. Intersection of Forest Service Road 4N38 and National Forest 1. 1395 Comment
  HSC15466  Prosartes smithii J. F. Knezevich 1968-5-21 446 Humboldt 20 mi. E of Arcata on Hwy. 299 at Lord Ellis Summit Comment
  HSC15484  Prosartes smithii W. R. Brigham 1962-5-20 16 Humboldt Side of Old Hwy. 101, N of Big Lagoon rd. Comment
  CAS-BOT-BC517505  Prosartes smithii L. R. Abrams 1927-9-1 12061 Humboldt Big Lagoon Comment
  CAS-BOT-BC517512  Prosartes smithii Alice Eastwood 1907-4-22 29 Humboldt Part Trinidad Comment
  HSC15474  Prosartes smithii W. D. Stevens 1964-5-12 11 Humboldt E end of 14th St., Arcata Comment
  SEINET12044958  Prosartes smithii H. C. Cantelow 1936-1 s.n. Humboldt 11 mi E of Orick Comment
  HSC74736  Prunella vulgaris Gail Newton 1981-7-24 2305 Humboldt Near Chaparral Mtn. 1433 Comment
  SEINET13947064 Image available Prunella vulgaris W. J. Ferlatte, B. D. Rogers 1966-1 2083 Humboldt 1 mi E of Forest Glen; 2400 ft alt., T29E, R8E, SEC19 732 Comment
  HSC81963  Prunella vulgaris subsp. lanceolata Thomas W. Nelson, Jane P. Nelson 1979-7-3 4946 Humboldt Along road to Joe Losey property at junction of Kneeland and Maple Creek Rds. 610 Comment
  HSC99296  Prunella vulgaris subsp. lanceolata Jimerson, J. Pageau 1979-8-10 721 Humboldt Near Tish ATang Ridge, close to the town of Hoopa 1464 Comment
  CDA40758  Prunella vulgaris subsp. lanceolata M. Pryor 1948-7-29 s.n. Humboldt 1 mile east of Loleta. 0 Comment
  HSC27044  Prunella vulgaris subsp. lanceolata Brad Klipfel 1973-8-25 291 Humboldt Near Lazy L Ranch, Fickle Hill Rd. Comment
  JEPS62490  Prunella vulgaris var. lanceolata Joseph P. Tracy 1934-7-14 13403 Humboldt along Mad River near Blue Lake; along Mad River near Blue Lake 15 Comment
  UC902030  Prunella vulgaris var. lanceolata Joseph P. Tracy 1949-8-4 18421 Humboldt Mud Springs Trinity Summit; , Mud Springs 1341 Comment
  UC1402061  Prunella vulgaris var. lanceolata Andrew P. Nelson 1960-7-18 622 -30 Humboldt Comment
  UC1402062  Prunella vulgaris var. lanceolata Andrew P. Nelson 1960-7-19 627 -53 Humboldt Comment
  CAS-BOT-BC159974  Prunus emarginata Mrs. H. C. Cantelow 1939-6-8 s.n. Humboldt South Fork Mts. Blake Lookout Road, 7.2 miles from Junction Alton. Red Bluff Highway Comment
  HSC99391  Prunus emarginata var. emarginata K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-6-28 40 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  HSC94127  Prunus laurocerasus Gordon Leppig 2000-4-12 1291 Humboldt Arcata: behind Humboldt State University, W of Fern Lake 49 Comment
  CAS-BOT-BC154737  Prunus virginiana var. demissa H. E. McMinn 1922-8-5 356 Humboldt Along Van [Dusen] Duzen River Comment
  CAS-BOT-BC357446  Pseudognaphalium ramosissimum Joseph P. Tracy 1936-8-24 15169 Humboldt Fickle Hill, 6 miles Southeast of Arcata 609 Comment
  HSC40261  Pseudognaphalium ramosissimum Linda M. Barker 1976-8-2 1678 Humboldt Lanphere- Christensen Dunes, 3 mi. W of Arcata Comment
  SD39794  Pseudognaphalium stramineum Edith A. Purer 1932-7-27 4128 Humboldt Samoa Comment
  UCD149981  Pseudognaphalium stramineum Harry George, G. M., B. M. 1967-7-11 s.n. Humboldt Humboldt Bay, South Spit. Comment
  CAS-BOT-BC80114  Pseudotsuga menziesii Doris K. Kildale 1927-5-7 3114 Humboldt Elk Ridge Comment
  CAS-BOT-BC80118  Pseudotsuga menziesii Doris K. Kildale 1928-7-1 5664 Humboldt Klamath River at mouth of Bluff Creek Comment
  RSA134611  Pseudotsuga menziesii P. C. Everett, B. K. Balls 1959-10-25 23971 Humboldt 7 mi SW from Ferndale along Old Coast Road to Capetown. 564 Comment
  HSC54576  Pseudotsuga menziesii var. menziesii Overton, Butler 1979-7-24 9612 Humboldt Near Titlow Hill, close to the town of Willow Creek. 1250 Comment
  HSC76290  Pseudotsuga menziesii var. menziesii Teresa Prendusi 1981-7-23 358 Humboldt Near Black Mountain. 890 Comment
  HSC76291  Pseudotsuga menziesii var. menziesii Denis Kearns 1981-7-23 391 Humboldt Near Whiteys Peak 732 Comment
  JEPS48296  Pseudotsuga menziesii var. menziesii Lincoln Constance 1934-5-24 643 Humboldt lower Look Prairie Bull Creek Region 121 Comment
  OBI36540  Pseudotsuga menziesii var. menziesii David J. Keil 1983-7-2 17338 Humboldt Horse Mtn Summit SW of Willow Crk Comment
  UC198649  Psilocarphus tenellus Joseph P. Tracy 1917-5-27 4783 Humboldt Eureka Northern Coast Ranges 0 Comment
  HSC1159  Pteridium aquilinum var. pubescens D. E. Anderson 1961-8-11 1728 Humboldt E of Humboldt State College campus. 30 Comment
  RSA275352  Pteridium aquilinum var. pubescens J. P. Smith, Steve Selva 1970-6-14 3855 Humboldt Along Calif. 96 at Whitmore Creek. 152 Comment
  HSC48700  Pterospora andromedea Brad Klipfel 1973-7-31 257 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  UC672932  Pterostegia drymarioides Joseph P. Tracy 1933-5-20 12226 Humboldt s point of cape; Cape Mendocino 3 Comment
  CAS-BOT-BC460602  Pyrola aphylla Doris Kildale 1931-5-24 10846 Humboldt Little Laribee, Laribee Valley Comment
  HSC69767  Pyrola aphylla Thomas W. Nelson, Jane Nelson 1977-9-3 3715 Humboldt J.E. Losey property above junction of Kneeland-Maple Creek Rd. 671 Comment
  HSC99518  Pyrola picta K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-22 181 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  UC1197577  Pyrola picta Joseph P. Tracy 1933-7-25 12876 Humboldt North Coast Ranges, Grouse Mountain Grouse Mountain; North Coast Ranges, Grouse Mountain 1524 Comment
  UC1541560  Pyrola picta Harold E. Parks 1934-6-27 5259 Humboldt Grouse Mountain Comment
  CAS-BOT-BC466039  Pyrola picta Joseph P. Tracy 1932-7-14 10569 Humboldt Trinity Sumimt near Corral Prairie 1584 Comment
  CAS-BOT-BC62672  Quercus chrysolepis Doris K. Kildale 1926-8-15 2514 Humboldt Willow Creek Flat 152 Comment
  HSC41267  Quercus chrysolepis Brad Klipfel 1974-7-23 461 Humboldt Horse Mtn. Comment
  RSA178558  Quercus chrysolepis Joseph P. Tracy 1950-8-4 19256 Humboldt Summit of ridge northeast of the lookout station, Grasshopper Peak (in Bull Creek State Park) at head of Canoe Creek. Comment
  HSC97543  Quercus garryana Todd Bouchier, Kathleen Gifford, Cameron Williams 1999-5-3 36 Humboldt 1.0 mi E of Hwy. 96 183 Comment
  UC54686  Quercus garryana Joseph Burtt Davy and Walter C. Blasdale Jun 21 1899-Jun 23 1899 5854 Humboldt Trinity Summit, at lake near the top North Coast Ranges Comment
  OBI36116  Quercus garryana var. garryana David J. Keil 1983-7-1 17265 Humboldt Ca. 8 mi W of jctn US 101 along Bull Creek Flats rd Comment
  SEINET10477993  Quercus garryana var. garryana Jones 1985-6-6 Jones 111 Humboldt T34n,r4e,sec.14. Titlow rd. Ca 8 miles s off hwy. Pinus, arbutus, quercus Chrysolepis, quercus vaccinifolia habitat 1128 Comment
  UCD46652  Quercus kelloggii R. N. Raynor 1935-4-15 s.n. Humboldt Fort Seward. Comment
  UCD46719  Quercus kelloggii Lincoln Constance 1934-5-29 738 Humboldt Upper Look Prairie, south fork Eel River, Humboldt County, California. 365 Comment
  HSC98340  Quercus wislizeni Jimerson, J. Pageau 1979-6-12 540 Humboldt Near Hopkins Butte, close to the town of Orleans 1036 Comment
  UC275513  Quercus wislizeni Joseph P. Tracy 1923-10-14 6576 Humboldt North Dobbyn Creek Northern Coast Ranges 152 Comment
  CAS-BOT-BC186671  Ranunculus Mrs. H. C. Cantelow 1936-5-18 1388 Humboldt 8 mi. N. of Orick nr. Corkscrew Tree Comment
  POM118706  Ranunculus californicus Marcus E. Jones 1924-4-26 s.n. Humboldt Eureka. Comment
  JEPS55087  Ranunculus occidentalis Joseph P. Tracy 1918-5-28 4948 Humboldt High Prairie Northern Coast Ranges, Bald Mountain 1066 Comment
  UC1196234  Ranunculus occidentalis Joseph P. Tracy 1914-5-3 4417 Humboldt corner Harris St. and Broadway (top of Bluff); Northern Coast Region, Eureka 0 Comment
  UCD96942  Ranunculus occidentalis R. N. Raynor 1936-3-21 s.n. Humboldt Fort Seward. Comment
  HSC30324  Ranunculus occidentalis var. occidentalis Dale R. Gradek 1974-4-16 11 Humboldt 7 mi. E of Blue Lake on rd. adjacent to Hwy. 299 305 Comment
  UC1196248  Ranunculus orthorhynchus var. orthorhynchus Joseph P. Tracy 1921-6-12 5827 Humboldt Butler Valley Northern Coast Ranges 152 Comment
  HSC39607  Ranunculus orthorhynchus var. platyphyllus Thomas W. Nelson, James Nelson 1976-7-28 3081 Humboldt W of Alder Springs. 1524 Comment
  JEPS79961  Ranunculus parviflorus Joseph P. Tracy 1927-5-21 8067 Humboldt Carlotta Northern Coast Ranges 60 Comment
  SD93107  Ranunculus repens W. Bertsch 1953-7-30 Humboldt Five miles north of Arcata Comment
  HSC18109  Ranunculus repens var. repens S. R. Johnson 1965-3-28 33 Humboldt 1.0 mi. N of Luffenholtz Beach Comment
  HSC18175  Ranunculus repens var. repens E. Hunt 1949-3-9 13 Humboldt Elk River Comment
  UC1197986  Rhamnus californica Joseph P. Tracy 1918-9-29 5111 Humboldt Myer's Ranch Northern Coast Ranges, South Fork Eel River 60 Comment
  JEPS41986  Rhamnus californica subsp. californica W. L. Jepson 1936-8-12 17884 Humboldt Phillipsville South Fork Eel River Comment
  UC592943  Rhamnus californica subsp. californica Carl B. Wolf 1931-8-31 Humboldt near Mouth of South Fork of Trinity River (on road to Sandy Bar Swimming Hole) 243 Comment
  POM126158  Rhamnus californica subsp. occidentalis Joseph P. Tracy 1921-10-2 5963 Humboldt Kneeland Prairie. Comment
  CDA35696  Rhamnus californica subsp. occidentalis T. Gallion 1958-7-11 Humboldt Weitchpec. 0 Comment
  UCR136663  Rhamnus purshiana H. E. Parks, S. T. Parks 1937-1 24018 Humboldt North Coast, Spruce Cove, Trinidad Comment
  HSC12372  Rhododendron columbianum Steve Dorei 1970-10-14 100 Humboldt Big Lagoon Comment
  HSC36263  Rhododendron columbianum John Rehling 1974-8-20 25 Humboldt Big Lagoon Bog Comment
  CAS-BOT-BC56608  Rhododendron macrophyllum A. A. Heller 1937-6-8 15898 Humboldt in the forest at Bishop Pine Lodge, 3 miles north of Trinidad Comment
  JEPS58777  Rhododendron macrophyllum Mr. and Mrs. Geo. B. Parrish 1930-5-21 Humboldt Trinidad Comment
  RSA257015  Rhododendron macrophyllum Gary D. Wallace 1971-7-29 950 Humboldt Prairie Creek Redwoods St. Pk. along Zig Zag Trail #3 of Hwy. 101. Comment
  SBBG5560  Rhododendron occidentale H. and M. Dearing 1933-5-17 1244 Humboldt N of Big Lagoon Comment
  HSC27891  Rhododendron occidentale var. paludosum Clifton Raymond Chesbrough 1973-6-19 68 Humboldt 0.25 mi. from Harris and T St. on U St. Comment
  HSC7893  Rhododendron occidentale var. paludosum D. E. Anderson 1961-9-30 1845 Humboldt Divide Lake Comment
  CAS-BOT-BC433141  Ribes W. R. Dudley 1899-1-1 s.n. Humboldt Possibly South of Arcata Comment
  HSC103240  Ribes bracteosum Jade Paget-Seekins 2010-4-18 10 Humboldt Near the bottom of Bald Hills Road, on the edge of the parking lot for Redwood Creek trailhead. 19 Comment
  CAS-BOT-BC169149  Ribes inerme var. klamathense Thomas W. Nelson; Jane P. Nelson 1977-5-30 3420 Humboldt Growing beside State Route 36 just west of Dinsmore at highway bridge over Van Duzen River - North Coast Ranges 731 Comment
  HSC48834  Ribes lacustre Brad Klipfel, J. P. Smith, J. O. Sawyer 1973-5-27 45 Humboldt Grogan's Hole near N Trinity Mtn. 1829 Comment
  HSC97283  Ribes laxiflorum M. Mesler 2007-3-23 745 Humboldt Near Trinidad, trail from Mill Creek to Elk Head. 61 Comment
  HSC55679  Ribes lobbii Overton, Butler 1979-7-26 9930 Humboldt Near Willow Creek, E Fork, close to the town of Willow Creek. 1326 Comment
  UC1198925  Ribes lobbii Joseph P. Tracy 1936-8-8 15139 Humboldt ne Hawkins Bar.; Trinity Summit Range, Happy Camp Mountain 1280 Comment
  UC667058  Ribes lobbii Joseph P. Tracy 1935-5-12 13801 Humboldt summit between North Fork Mad River and Redwood Creek (on Trinity Highway) 670 Comment
  UC70550  Ribes lobbii J. Burtt Davy 1899-6-23 5840 Humboldt Trinity Summit North Coast Ranges 1981 Comment
  HSC58106  Ribes marshallii G. L. Clifton, Griswold 1979-8-1 12041 Humboldt Near N Trinity Mtn., close to the town of Hoopa 1799 Comment
  UC667069  Ribes roezlii Joseph P. Tracy 1933-3-5 10916 Humboldt Alton North Coast Ranges, Van Duzen River 30 Comment
  BLMAR117  Ribes roezlii var. amictum Jennifer Anthony-Wheeler 1995-3-15 117 Humboldt King range, growing at far N end of Honeydew campground-open grassy floodplain 115 Comment
  BLMAR653  Ribes roezlii var. cruentum Jennifer Wheeler 2012-5-9 653 Humboldt Lacks Creek, Pine Ridge Road 1097 Comment
  CAS-BOT-BC198898  Ribes roezlii var. cruentum Joseph P. Tracy 1934-3-11 13153 Humboldt French Camp Ridge 1066 Comment
  UC4922509  Ribes roezlii var. cruentum Joseph P. Tracy 1930-7-25 8885 Humboldt Trinity River Valley at Willow Creek Trinity River Valley; Northern Coast Ranges, , Willow Creek 152 Comment
  HSC20345  Ribes sanguineum Frances Oldridge 1946-1 Humboldt Eureka Comment
  HSC56320  Ribes sanguineum Overton, Butler 1979-8-2 12659 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  HSC57037  Ribes sanguineum Overton, Butler 1979-7-24 9674 Humboldt Near Friday Camp, close to the town of Willow Creek. 1250 Comment
  HSC70756  Ribes sanguineum R. York 1980-5-17 527 Humboldt Near Le Perron Peak 1066 Comment
  HSC76265  Ribes sanguineum Teresa Prendusi 1981-7-24 511 Humboldt Near Whiteys Peak 1634 Comment
  UC11646 Image available Ribes sanguineum Harley P. Chandler June, 1901 1287 Humboldt Hupa Indian Reservation North Coast Ranges 152 Comment
  UC1541336  Ribes sanguineum Harold E. Parks February 1934 4827 Humboldt Spruce Cove Trinidad Comment
  HSC22045  Ribes sanguineum var. glutinosum B. D. Rogers, D. E. Anderson 1965-4-1 411 Humboldt 4 mi. SE of Arcata along Jacoby Creek Comment
  HSC36281  Ribes sanguineum var. glutinosum Barbara Kelly 1976-3-9 248 Humboldt Above Mad River at edge Comment
  HSC49912  Ribes sanguineum var. glutinosum Maralyn O'Meara 1973-2-19 189 Humboldt McKinleyville, Murray Rd. Comment
  RSA0018242  Ribes sanguineum var. glutinosum E. R. Johnson 1929-08 1413 Humboldt Arcata Redwood Park. 76 Comment
  RSA0018238  Ribes sanguineum var. glutinosum Lyman Benson 1929-7-19 1876 Humboldt Mouth of Matole [Mattole] River. Comment
  HSC48397  Ribes viscosissimum Brad Klipfel 1973-6-10 104 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC97475  Ribes viscosissimum Cara Witte 2007-5-23 110 Humboldt Forest Service Road 4N70 to Grouse Mountain Lookout. 1601 Comment
  RSA0020901  Ribes viscosissimum Jos. Burtt Davy 1899-6-23 5848 Humboldt Trinity Summit. 2134 Comment
  CHSC59600  Romanzoffia californica R. N. Raynor 1935-4-8 Humboldt Ft. Seward. Comment
  UCD120747  Romanzoffia californica R. Raynor 1935-4-8 s.n. Humboldt Ft. Seward. Comment
  HSC57635  Romanzoffia sitchensis G. L. Clifton, Griswold 1979-7-25 10793 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1814 Comment
  SEINET3069103 Image available Romanzoffia tracyi J. P. Tracy, H. E. Parks 1933-5-9 11008 Humboldt Vicinity of Trinidad 20 Comment
  UC1199221  Rorippa curvisiliqua Joseph P. Tracy 1934-7-9 13350 Humboldt Dobbyn Creek Northern Coast Ranges, Dobbyn Creek 152 Comment
  UC1199222  Rorippa nasturtium-aquaticum Joseph P. Tracy 1927-7-17 8280 Humboldt on lower western foothills Chaparral Mountain (Three Cabins); Northern Coast Ranges, western foothills Chaparral Mountain 457 Comment
  UC492261  Rorippa palustris H. E. Parks and Joseph P. Tracy 1931-5-17 9425 Humboldt Trinity River near Willow Creek; Northern Coast Ranges, Trinity River nr Willow Creek 152 Comment
  RSA44364  Rosa eglanteria H. M. Pollard 1946-8-27 s.n. Humboldt Near Boyce Creek. Orleans region. Comment
  BLMAR535  Rosa gymnocarpa Jennifer Wheeler 2009-6-23 535 Humboldt King range, On Paradise Ridge road Comment
  CAS-BOT-BC146476  Rosa gymnocarpa Alice Eastwood; John Thomas Howell 1937-6-23 4798 Humboldt Near Dinsmores Comment
  HSC58243  Rosa gymnocarpa G. L. Clifton, Griswold 1979-8-2 12413 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  POM117575  Rosa gymnocarpa Marcus E. Jones 1924-4-26 s.n. Humboldt Scotia. Comment
  POM365829  Rosa gymnocarpa Jane Turner, F. M. Ball 1962-7-10 1143 Humboldt East Fork Willow Creek Forest Camp, Hwy 299 ca. 5 mi. W of Willow Creek in Six Rivers National Forest. 457 Comment
  SEINET200819  Rosa gymnocarpa Joseph P. Tracy 1911-7-7 3428 Humboldt Brannan Mountain ,viz. Ridge north of Willow Creek, between Willow and Campbell Creeks, near the summit 1219 Comment
  CAS-BOT-BC146844  Rosa nutkana Alice Eastwood; John Thomas Howell 1937-6-23 4825 Humboldt Near Bridgeville Comment
  CAS-BOT-BC148344  Rosa pisocarpa Joseph P. Tracy 1949-8-7 18436 Humboldt Trinity Summit, near Box Camp in open fir timber. 1524 Comment
  UC902158  Rosa pisocarpa Joseph P. Tracy 1947-7-4 17813 Humboldt near Box Camp; Trinity Summit 1524 Comment
  CAS-BOT-BC146884  Rosa rubiginosa Doris K. Kildale 1927-7-1 3616 Humboldt Alton Hill 30 Comment
  HSC19620  Rosa rubiginosa J. R. Lippincott 1967-7-16 10 Humboldt 1 mi. E of Blue Lake on Hwy. 299 Comment
  HSC99891  Rubus armeniacus Bill Wood 2011-8-19 Humboldt Eureka; corner of Myrtle Ave. and Bettie Lane Comment
  RSA244511  Rubus discolor Larry E. DeBuhr, Gary D. Wallace 1973-9-16 s.n. Humboldt Near entrance of Prairie Creek Redwoods State Park Comment
  CAS-BOT-BC148384  Rubus leucodermis Doris K. Kildale 1927-7-3 3662 Humboldt Willow Creek Flat 152 Comment
  NY1043368  Rubus parviflorus D. K. Gillespie 1938-8-6 15397 Humboldt Eureka Comment
  HSC19678  Rubus spectabilis J. W. Johnson 1962-4-20 1277 Humboldt Along the Lanphere Lane, Samoa Peninsula Comment
  HSC19688  Rubus spectabilis S. J. Hawks 1965-4-3 16 Humboldt Luffenholtz Beach Comment
  RSA247219  Rubus spectabilis Gary D. Wallace, Larry E. DeBuhr 1972-3-29 1010 Humboldt Prairie Creek Redwoods St. Pk. near the headquarters. Comment
  CDA26338  Rubus ursinus Gordon Leppig 1998-5-11 762 Humboldt Northern California Peatlands; Big Lagoon County Park. Big Lagoon Bog. Comment
  HSC55306  Rubus ursinus Griswold, Butler 1979-7-11 6907 Humboldt Near Snow Camp Mtn., close to the town of Willow Creek. 1320 Comment
  HSC61072  Rubus ursinus T. Jimerson, J. Pageau 1979-6-22 608 Humboldt Near Bee Mtn., close to the town of Orleans 656 Comment
  UCD113990  Rubus ursinus Linda M. Barker 1976-6-1 1565 Humboldt 3 miles west of Arcata. Comment
  UCD17613  Rubus ursinus H. Olmo; T. S. Mallah 1946-6-26 46- 052 Humboldt California. Humboldt County: 27.8 miles from Ettersburg toward Dyerville. Comment
  UCD17848  Rubus ursinus H. Olmo 8-10 May 1962 62 36 Humboldt California. Humboldt County: along Route 36 between Grizzly Creek Redwoods State Park and Dinsmore. Comment
  POM271074  Rubus vitifolius Lyman D. Benson 1929-7-15 1814 Humboldt Clam Beach. Trinidad. Comment
  RSA89567  Rubus vitifolius Philip A. Munz 1954-7-23 19865 Humboldt 5 miles SE of Carlotta Comment
  SEINET5710897  Rudbeckia occidentalis Lowell E. Urbatsch 1990-1 6799 Humboldt From Calif. 99 at Hawkins Bar (in Trinity County), turn onto the road to Denny and travel 1.7 miles down this road to a fork; take the left fork (not leading to Denny but to Waterman Ridge and Zeigler Point) and travel 6.7 miles down this road to another fork. Take the rt. fork (away from the rd. leading to Waterman Ridge and Willow Creek). On this rd. (FD 7 NO4) travel 1.5 miles to another fork; continue on 7No4N (the left fork) for 7.4 miles. At this point, take 7NO4N, the rd to Groves Prairie. The collection site is about 50m to the right near the Groves Prairie Creek sign. The site is 17.9 miles from Hawkins Bar just beyond mile marker 9.; Groves Prairie Comment
  CAS-BOT-BC421936  Rumex acetosella Doris K. Kildale 1925-8-17 1239 Humboldt Trinity Summit - near Waterdog Lake. 1828 Comment
  HSC32426  Rumex acetosella Linda M. Barker 1974-5-11 171 Humboldt Redwood National Park, Bald Hills Rd., Gans Prairie 549 Comment
  HSC69627  Rumex acetosella R. Kalal 1980-5-8 32 Humboldt Along Jackson Ranch Rd. 6 Comment
  HSC17592  Rumex crispus R. J. Vernimen 1963-3-25 18 Humboldt Along railroad tracks at Clam Beach lagoons Comment
  SEINET11946618  Rumex obtusifolius C. S. Kaut 2000-1 6 Humboldt Trinidad Comment
  UC1222604  Rupertia physodes Joseph P. Tracy 1950-6-15 18783 Humboldt 7 mi n Harris; Mail Ridge, Jenk's Ranch Comment
  RSA249519  Ruppia maritima Robert F. Thorne, Percy C. Everett 1965-8-7 35208 Humboldt Samoa Peninsula. 0 Comment
  UCD92347  Rytidosperma penicillatum B. A. Madson 1938-8-5 s.n. Humboldt Loleta (coast). Comment
  POM318824  Salicornia Patricia Wilder 1968-8-21 4416 Humboldt Northern Coastal arm of Humboldt Bay, NW of Samoa, on E side of train tracks. 3 Comment
  BLMAR466  Salicornia depressa Jennifer Anthony-Wheeler 2007-8-28 466 Humboldt South Spit 6 Comment
  CHSC72212  Salicornia virginica Vernon H. Oswald 1998-9-2 9562 Humboldt Humboldt Bay NWR south of Eureka, Hookton Slough Trail on the levee along the south side of Hookton Slough. 0 Comment
  CAS-BOT-BC132669  Salix coulteri Joseph P. Tracy 1932-7-31 10286 Humboldt Eel River, Alton to Fortuna 15 Comment
  UC1173613  Salix eastwoodiae Joseph P. Tracy 1935-7-26 14264 Humboldt meadows at Water Dog Lakes; Trinity Summit 1828 Comment
  CAS-BOT-BC103807  Salix exigua W. R. Dudley 1899-6-21 s.n. Humboldt near bluff below junction of North and South Forks of Eel River Comment
  CAS-BOT-BC103821  Salix exigua Harold E. Parks 1931-5-14 0961 Humboldt Van Duzen River between Alton and Carlotta 15 Comment
  JEPS12969  Salix exigua Joseph P. Tracy 1931-9-19 9673 Humboldt Alton; Northern Coast Region, Van Duzen River 30 Comment
  POM361044  Salix exigua H. E. Parks 1931-5-14 958 Humboldt Fernbridge. Eel River. 10 Comment
  SJSU275  Salix exigua var. exigua H. E. Parks & J. P. Tracy 1931-5-17 967 Humboldt Mouth of Willow Cr at Trinity R 152 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-BC106860  Salix hookeriana W. J. Ferlatte 1967-6-13 1118 Humboldt Clam Beach Lagoon 6 Comment
  CAS-BOT-BC107711  Salix hookeriana L. R. Abrams; G. T. Benson 1924-5-17 10734 Humboldt Eureka Comment
  CAS-BOT-BC107713  Salix hookeriana Doris K. Kildale 1927-3-25 3003 Humboldt Near Buckspot School House 50 Comment
  CAS-BOT-BC107716  Salix hookeriana Doris K. Kildale 1926-7-11 2364 Humboldt Mouth of Bear River - Capetown Comment
  CAS-BOT-BC107729  Salix hookeriana Harold E. Parks 1931-3-24 912 Humboldt Eel River, Fortuna 10 Comment
  CAS-BOT-BC107745  Salix hookeriana Carleton R. Ball; Harold E. Parks; Joseph P. Tracy 1932-5-11 1216 Humboldt In pine barrens near the coast, 1 mile north of Samoa Comment
  CAS-BOT-BC107771  Salix hookeriana Harold E. Parks; Carleton R. Ball; Joseph P. Tracy 1932-5-11 1226 Humboldt In pine barrens near the coast, 1 mile north of Samoa. Comment
  CHSC9658  Salix hookeriana E. L. Smith 1971-8-17 1028 Humboldt Between highway and beach at Trinidad. Comment
  CHSC96696  Salix hookeriana Gordon Leppig 1999-4-15 1120 Humboldt Big Lagoon County Park, Big Lagoon Bog. On western edge of fen. NAD 27 UTM Zone 10, 405321E, 4557202N. 3 Comment
  JEPS12928  Salix hookeriana Joseph P. Tracy 1931-4-4 9330 Humboldt near Samoa; Northern Coast Region, Humboldt Bay 6 Comment
  JEPS12960  Salix hookeriana Joseph P. Tracy 1931-9-19 9680 Humboldt near Alton; Northern Coast Ranges, Van Duzen River 30 Comment
  LA208757  Salix hookeriana Harold E. Parks; 1931-5-28 999 Humboldt Little River Lagoon, Trinidad; at sea level Comment
  UC1173588  Salix hookeriana Joseph P. Tracy 1937-7-27 15508 Humboldt Lindsay Creek Mad River (mouth) 15 Comment
  UC1196672  Salix hookeriana Joseph P. Tracy 1935-3-3 13717 Humboldt mouth of Mad R. 6 Comment
  UC275500  Salix hookeriana Joseph P. Tracy 1925-2-1 6930 Humboldt lowlands near Salmon Creek Corners (around Humboldt Bay); Northern Coast Region, Humboldt Bay 6 Comment
  UC275501  Salix hookeriana Joseph P. Tracy 1925-11-15 7314 Humboldt lowlands at foot of Table Bluff (near Salmon Creek); Northern Coast Ranges, Humboldt Bay 6 Comment
  UC481333  Salix hookeriana Harold E. Parks 1931-5-27 998 Humboldt Bishop Pine Lodge Trinidad 76 Comment
  UC512078  Salix hookeriana Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-11 1226 Humboldt 1 mi n Samoa (pine barrens near coast, r.r right-of-way) Comment
  UC519342  Salix hookeriana Joseph P. Tracy 1933-10-8 13087 Humboldt Blue Slide Northern Coast Ranges, Van Duzen River 91 Comment
  POM219699  Salix hookeriana var. tomentosa H. E. Parks 1931-5-12 955 Humboldt Samoa. Humboldt Bay. Near sea level. 0 Comment
  JEPS14760  Salix laevigata Joseph P. Tracy 1932-7-31 10290 Humboldt along Eel River at mouth of Larrabee Creek; Northern Coast Ranges 30 Comment
  UC1173603  Salix laevigata Joseph P. Tracy 1935-5-25 13886 Humboldt Dobbyn Creek 152 Comment
  UC1196588  Salix lasiandra subsp. lasiandra Joseph P. Tracy 1932-5-14 10064 Humboldt Scotia Bluffs North Coast Ranges, Scotia Bluffs 30 Comment
  UC481261  Salix lasiandra subsp. lasiandra Harold E. Parks 1931-5-20 991 Humboldt Blue Lake Mad R., Blue Lake 15 Comment
  UC481283  Salix lasiandra subsp. lasiandra Harold E. Parks 1931-5-14 959 Humboldt Van Duzen R. between Alton and Carlotta; Van Duzen R. 15 Comment
  UC481295  Salix lasiandra subsp. lasiandra Harold E. Parks and Joseph P. Tracy 1931-5-17 966 Humboldt mouth of Willow Creek at Trinity R. (banks of Willow Creek); Willow Creek 150 Comment
  UC518900  Salix lasiandra subsp. lasiandra Jim Davis Apr 25 1933-Apr 27 1933 3 Humboldt around Eureka Eureka Comment
  UC518901  Salix lasiandra subsp. lasiandra Jim Davis Apr 25 1933-Apr 27 1933 2 Humboldt around Eureka Eureka Comment
  UC519382  Salix lasiandra subsp. lasiandra Joseph P. Tracy 1933-7-16 12772 Humboldt meadow at McKay Camp McKay Camp; Northern Coast Ranges, S. Fork Mt. 1676 Comment
  CAS-BOT-BC125227  Salix lasiandra var. lasiandra Harold E. Parks 1931-3-24 0911 Humboldt Fortuna, on banks of Eel River 10 Comment
  CAS-BOT-BC107580  Salix lasiolepis Joseph P. Tracy; Carleton R. Ball; Harold E. Parks 1932-5-13 1254 Humboldt Floodplain of Mad River at Engelhart gravel pit, 2 miles east of Redwood Highway and above Blue Lake Road Comment
  CAS-BOT-BC107624  Salix lasiolepis Joseph P. Tracy 1932-4-24 9803 Humboldt South Fork of Eel River, between Miranda and Redway 91 Comment
  HSC96358  Salix lasiolepis Gordon Leppig 1999-4-15 1117 Humboldt Big Lagoon County Park, Big Lagoon Bog, W fen edge 3 Comment
  HSC96369  Salix lasiolepis Gordon Leppig 1999-4-15 1119 Humboldt Big Lagoon County Park, Big Lagoon Bog, W fen edge 3 Comment
  HSC98772  Salix lasiolepis Cara Witte 2008-7-7 842 Humboldt National Forest Road 5N10. 2 miles south of intersection with Friday Ridge Road. Near waterhole sign. 1224 Comment
  JEPS12916  Salix lasiolepis Joseph P. Tracy 1927-5-13 7996 Humboldt Redwood Creek at Berry's; Northern Coast Ranges 274 Comment
  JEPS12931  Salix lasiolepis Joseph P. Tracy 1931-5-31 9328 Humboldt Redwood Creek at Berry's; Northern Coast Ranges 274 Comment
  JEPS13081  Salix lasiolepis Joseph P. Tracy 1939-8-5 16392 Humboldt Van Duzen River at Dinsmore's 737 Comment
  JEPS13082  Salix lasiolepis Joseph P. Tracy 1939-4-29 16237 Humboldt at mouth of Slate Creek Klamath River 121 Comment
  JEPS14769  Salix lasiolepis Joseph P. Tracy 1932-10-8 10867 Humboldt on Trinity Hwy. Berry's Mt. 762 Comment
  POM219249  Salix lasiolepis H. E. Parks, Susan T. Parks 1931-8-15 1079 Humboldt Blue Slide. Van Duzen River. 100 Comment
  UC1196627  Salix lasiolepis Joseph P. Tracy 1935-5-25 13890 Humboldt North Dobbyn Creek Dobbyn Creek 152 Comment
  UC469407  Salix lasiolepis Joseph P. Tracy 1927-3-27 7868 Humboldt at Berry's Redwood Creek; Northern Coast Ranges, Redwood Creek 274 Comment
  UC469438  Salix lasiolepis Joseph P. Tracy 1931-11-8 9747 Humboldt on Van Duzen R. Blue Slide; Northern Coast Ranges, Van Duzen R., Blue Slide 91 Comment
  UC506405  Salix lasiolepis Joseph P. Tracy 1932-10-2 10859 Humboldt near Bair's; Northern Coast Ranges, Redwood Creek 213 Comment
  UC512039  Salix lasiolepis Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-17 1323 Humboldt e Redwood Creek (w slope of mt., on Trinity Hwy); Berry's Mountain 762 Comment
  UC709424  Salix lasiolepis Joseph P. Tracy 1941-3-9 16802 Humboldt Camp Grant Eel River (on gravel bar of river) 48 Comment
  CAS-BOT-BC107413  Salix lasiolepis var. lasiolepis Doris K. Kildale 1926-3-7 1527 Humboldt Stephens Grove on South Fork of Eel River 60 Comment
  HSC20064  Salix melanopsis H. E. Parks, J. P. Tracy 1931-5-17 967 Humboldt Humboldt/Trinity Cos., below Willow Creek 152 Comment
  LA208878  Salix melanopsis Harold E. Parks; Joseph P. Tracy 1931-5-17 972 Humboldt mouth of Willow Creek at Trinity River 150.0 Comment
  POM220143  Salix melanopsis H. E. Parks, Joseph P. Tracy 1931-5-17 972 Humboldt Mouth of Willow Creek at Trinity River. 150 Comment
  SBBG57935  Salix melanopsis H. E. Parks 1931-5-14 965 Humboldt Van Duzen River between Alton and Carlotta 15 Comment
  SD914  Salix melanopsis Harold E. Parks, Joseph P. Tracy 1931-5-17 972 Humboldt Mouth of Willow Creek at Trinity River 149 Comment
  UC469449  Salix melanopsis Joseph P. Tracy 1931-5-3 9348 Humboldt Mad R. near Blue Lake; Northern Coast Region, Mad R. 15 Comment
  UC481344  Salix melanopsis Harold E. Parks 1931-10-15 1077 Humboldt Bishop Pine Lodge Trinidad 75 Comment
  UC490555  Salix melanopsis C. R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-17 10073 Humboldt Redwood Creek at Berrys; North Coast Ranges, Redwood Creek 274 Comment
  UC490557  Salix melanopsis Joseph P. Tracy 1932-5-10 9961 Humboldt Mattole R. near Petrolia; North Coast Region, Mattole R. 15 Comment
  UC519372  Salix melanopsis Joseph P. Tracy 1933-6-7 12514 Humboldt on Van Duzen R. Blue Slide; Northern Coast Ranges, Van Duzen R., Blue Slide 91 Comment
  CAS-BOT-BC129204  Salix piperi Carleton R. Ball; Harold E. Parks; Joseph P. Tracy 1932-5-13 1251 Humboldt Floodplain of Mad River at Engelhart gravel pit, 2 miles east of Redwood Highway and above Blue Lake Road Comment
  CAS-BOT-BC129250  Salix piperi Carleton R. Ball; Harold E. Parks; Joseph P. Tracy 1932-5-11 1210 a Humboldt Little River Lagoon, 4 1/2 miles south of Trinidad, appraximately at sea level. Comment
  UC212993  Salix purpurea Joseph P. Tracy 1919-5-25 5137 Humboldt Ryan's Slough Northern Coast Ranges, Humboldt Bay, Ryan's Slough 15 Comment
  CAS-BOT-BC129135  Salix scouleriana Harold E. Parks; Carleton R. Ball; Joseph P. Tracy 1932-5-11 1228 Humboldt 1 mile north of Samoa, approximately sea level. Comment
  CAS-BOT-BC129153  Salix scouleriana Doris K. Kildale 1925-12-22 1438 Humboldt Eureka, vacant lot Comment
  CAS-BOT-BC129172  Salix scouleriana H. E. Parks 1932-11-25 1351 Humboldt Spruce Cove (Parks Ranch), Trinidad Comment
  HSC20076  Salix scouleriana J. P. Tracy 1932-7-13 10507 Humboldt Klamath Mtns., Trinity summit, Corral Prairie 1524 Comment
  UC1173627  Salix scouleriana Joseph P. Tracy 1936-2-2 14766 Humboldt vicinity of Carlotta 30 Comment
  UC1196698  Salix scouleriana Joseph P. Tracy 1921-1-15 5412 Humboldt Carlotta Northern Coast Ranges, Carlotta 60 Comment
  UC481260  Salix scouleriana Harold E. Parks 1931-5-20 994 Humboldt Blue Lake Mad R., Blue Lake 15 Comment
  POM219690  Salix sessilifolia H. E. Parks 1931-5-14 961 Humboldt Van Duzen River between Alton and Carlotta. 15 Comment
  HSC90419  Salix sitchensis Jean Hanson 1980-3-8 26 Humboldt Indian (Gunther) Island, Humboldt Bay, Eureka, W end of island Comment
  UC176185  Salix sitchensis Joseph P. Tracy 1913-3-9 4013 Humboldt Van Duzen R. near Hydesville; Northern Coast Region, Van Duzen R. 60 Comment
  HSC98110  Sambucus mexicana Cara Witte 2007-6-27 362 Humboldt Forest Service Road 5N04. Near Grouse Mountain. Approximately 1/4 mile east of spring. 1583 Comment
  HSC57142  Sambucus nigra subsp. caerulea Overton, Butler 1979-7-26 9926 Humboldt Near Willow Creek, E Fork, close to the town of Willow Creek 1326 Comment
  CAS-BOT-BC235124  Sambucus racemosa var. racemosa D. E. Breedlove 1962-6-8 3059 Humboldt U.S. Highway 101, 5 miles south of Orick 30 Comment
  HSC36228  Sambucus racemosa var. racemosa John Rehling 1975-4-21 53 Humboldt Along Jolly Giant Creek behind HSU campus. Comment
  HSC37578  Sanicula arctopoides J. D. Ackerman 1975-6-10 448 Humboldt 1 mi. N of Samoa Bridge turnoff from Samoa Blvd., S of Manila Comment
  POM256866  Sanicula arctopoides Joseph P. Tracy 1936-5-30 14838 Humboldt Near Samoa on Humboldt Bay. 6 Comment
  UC1197109  Sanicula bipinnatifida Joseph P. Tracy 1927-5-8 7989 Humboldt Garberville 152 Comment
  UC1197110  Sanicula bipinnatifida Joseph P. Tracy 1928-6-24 8461 Humboldt Valley of South Yager Creek 762 Comment
  UC179934  Sanicula bipinnatifida Joseph P. Tracy 1914-5-30 4478 Humboldt Northern Coast Region, Alton Alton; Northern Coast Region, Alton 30 Comment
  UC183563  Sanicula bipinnatifida Joseph P. Tracy and Ernest B. Babcock 1912-5-11 3606 Humboldt near Hydesville (Northern Coast Region); Northern Coast Region 30 Comment
  HSC74740  Sanicula crassicaulis Gail Newton 1981-8-5 2361 Humboldt Near Bug Creek, E Fork. 820 Comment
  JEPS281  Sanicula crassicaulis Joseph P. Tracy 1927-5-8 7967 Humboldt facing South Fork of Eel River (Phillipsville); Phillipsville 121 Comment
  UC1197100  Sanicula crassicaulis Joseph P. Tracy 1927-5-15 8034 Humboldt Trinity River Valley near the South Fork; Trinity River Valley 182 Comment
  HSC21637  Sanicula crassicaulis B. R. Templeton 1962-4-16 Humboldt 3 mi. W of Orleans on Hwy. 35 Comment
  JEPS1002  Sanicula graveolens Joseph P. Tracy 1926-5-30 7520 Humboldt near Ruby Creek (Northern Coast Ranges, Willow Creek Canyon); Northern Coast Ranges, Willow Creek Canyon 609 Comment
  HSC73546  Sanicula tuberosa Gail Newton 1980-7-14 1471 Humboldt Near Last Chance Ridge. 1219 Comment
  HSC99066  Sanicula tuberosa C. Witte 2007-5-18 40 Humboldt Grouse Mountain Lookout. 1644 Comment
  HSC102071  Saxifraga aprica M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 973 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  JEPS47544  Saxifraga mertensiana Joseph P. Tracy 1922-4-30 6009 Humboldt mouth of South Fork Trinity River (Martin Ranch); Northern Coast Ranges, , Martin Ranc 152 Comment
  CHSC84708  Schoenoplectus pungens L. P. Janeway 2003-7-27 7932 Humboldt North Coast. East shore of Big Lagoon, on north side of mouth of Tom Creek. 2 Comment
  UC1541349  Scirpus acutus var. occidentalis H. E. and S. T. Parks 1930-9-14 771 Humboldt Big Lagoon Comment
  UC183685  Scirpus cernuus J. P. Tracy 1900-5-28 816 Humboldt immediate vicinity Eureka; vicinity Eureka 0 Comment
  HSC59434  Scirpus microcarpus Kenneth Clark 1979-4-21 141 Humboldt Clam Beach, 3.5 mi. N of McKinleyville on Hwy. 101 Comment
  UC1152056  Scirpus microcarpus Joseph P. Tracy 1950-8-7 19269 Humboldt meadow at Box Camp (Trinity Summit); , meadow at Box Camp 1463 Comment
  UC184186  Scirpus microcarpus Joseph P. Tracy 1914-9-13 4628 Humboldt at Eureka Northern Coast Region, at Eureka 0 Comment
  CDA39145  Scirpus microcarpus Gordon Leppig 1998-6-26 861 Humboldt Arcata; Alder Grove Pond, south side of pond. Comment
  SEINET3991343  Scoliopus bigelovii Unknown 1950-4-20 18611 Humboldt One mile west of Dinsmore's; along Van Duzen river, opposite Buck Mountain 762 Comment
  JEPS11415  Scrophularia californica Lincoln Constance 1934-5-26 684 Humboldt s end of Dyerville Bridge; Bull Creek Region, South Fork Eel River 45 Comment
  UCD124815  Scrophularia californica Linda M. Barker 1976-5-13 1473 Humboldt Lanphere-Christensen Dunes, 3 miles west of Arcata. Comment
  HSC91946  Scrophularia californica E. Mackey 1986-5-13 Humboldt Patrick's Point State Park, edge of coastal stand Comment
  HSC58561  Scutellaria antirrhinoides Overton, Butler 1979-7-26 10108 Humboldt Near Cold Spring, close to the town of Willow Creek 1417 Comment
  UC1239710  Scutellaria antirrhinoides Joseph P. Tracy 1919-5-31 5154 Humboldt near Willow Creek (at w side of Trinity River); Northern Coast Ranges, Trinity River 152 Comment
  HSC79258  Sedum laxum subsp. flavidum D. K. Imper 1983-7-13 Humboldt Six Rivers National Forest, Sims Mtn. next to FS 4N01, 1 1/4 mi. S of Sugarloaf Mtn. 1280 Comment
  HSC79269  Sedum laxum subsp. flavidum D. K. Imper 1983-7-13 Humboldt Six Rivers National Forest, Bennett Peak Comment
  CAS-BOT-BC63879  Sedum laxum subsp. heckneri Joseph P. Tracy 1935-7-30 14363 Humboldt Salmon summit. 1767 Comment
  HSC57880  Sedum obtusatum subsp. retusum Overton, Butler 1979-7-31 11418 Humboldt Near Water Dog Lakes, close to the town of Hoopa 1830 Comment
  HSC73871  Sedum radiatum Gail Newton 1980-7-14 1461 Humboldt Near Last Chance Ridge. 1219 Comment
  UC1198842  Sedum radiatum Joseph P. Tracy 1912-7-31 3914 Humboldt Buck Mountain Northern Coast Ranges, Buck Mountain near the summit (near the summit) 1219 Comment
  CAS-BOT-BC62179  Selaginella oregana Joseph P. Tracy 1933-5-18 12196 Humboldt Mad River, near Blue Lake 15 Comment
  RSA137269  Selaginella wallacei Ira L. Wiggins 1957-6-20 14136 Humboldt 8.5 miles S of Ferndale. Comment
  UC201252  Senecio aronicoides Chestnut and Drew 1888-7-21 Humboldt South Fork Mountain Comment
  UC1239501  Senecio glomeratus Joseph P. Tracy 1936-8-24 15173 Humboldt 6 mi se Arcata; Fickle Hill 609 Comment
  HSC6156  Senecio integerrimus var. major H. E. Parks, J. P. Tracy 1930-5-25 879 Humboldt Laribee Valley 762 Comment
  UC34194  Senecio integerrimus var. major Harley P. Chandler June 1901 1274 Humboldt Hupa Indian Reservation North Coast Ranges 1036 Comment
  UC581707  Senecio integerrimus var. major Joseph P. Tracy 1932-7-12 10430 Humboldt Corral Prairie Trinity Summit 1584 Comment
  BLMAR294  Senecio integerrimus var. major Jennifer Anthony-Wheeler 2002-4-30 294 Humboldt Clark Butte 670 Comment
  CAS-BOT-BC364013  Senecio integerrimus var. major Thomas W. Nelson; Jane P. Nelson 1980-5-25 5250 Humboldt North Coast Ranges. Along road from Dinsmore to Anderson Crossing. McKeown Ranch road ca 100 m north of junction of road to Hindley Cabin 822 Comment
  CAS-BOT-BC364016  Senecio integerrimus var. major Joseph P. Tracy 1928-5-6 8429 Humboldt Trinity River Valley, at Willow Creek 152 Comment
  UC1199238  Senecio sylvaticus Harold E. Parks and Joseph P. Tracy 1934-6-27 11034 Humboldt Redwood Creek at Berry's; Redwood Creek at Berry's 274 Comment
  UC1223153  Senecio sylvaticus Joseph P. Tracy 1941-8-17 16992 Humboldt near High Prairie (Bald Mountain); Bald Mountain Comment
  UCSC000817  Senecio sylvaticus H. L. Person 1932-7-18 s.n. Humboldt Eureka, Freshwater, Forest: T4NRIE Comment
  HSC102003  Senecio triangularis M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-12 904 Humboldt Rustic Camp, northwest of Patterson Meadows 1512 Comment
  HSC50533  Senecio triangularis Overton 1979-8-1 12335 Humboldt Near Mill Creek, close to the town of Hoopa 1342 Comment
  UC581749  Senecio triangularis Joseph P. Tracy 1933-7-25 12851 Humboldt Grouse Mountain , Grouse Mountain (North Coast Ranges) 1524 Comment
  SEINET11802700  Senecio vulgaris J. P. Tracy 1943-1 17454 Humboldt Eel River Bar at mouth of Van Duzen, near Alton Comment
  HSC13034  Sequoia sempervirens T. C. DeCew 1970-11-14 44 Humboldt HSU Campus Comment
  JEPS48280  Sequoia sempervirens Mrs. Fay Howard 1929-10-5 Humboldt about 1 mi n Pepperwood (down the river) Comment
  RSA730333  Sequoia sempervirens R. R. Halse 1989-5-13 3842 Humboldt Along Highway 101, 2 miles south of Weott 108 Comment
  SD34  Sequoia sempervirens Charlotte M. Wilder 1932-12-24 Humboldt Carlotta Comment
  SEINET11739296  Sequoia sempervirens R. J. Mastrogiuseppe 1966-1 s.n. Humboldt along state route 229 from Arcata to Redding, Demonstration Forest, Simpson Timber Co Comment
  JEPS12498  Sherardia arvensis W. L. Jepson 1902-6 1936 Humboldt above Korbel Comment
  UC1222508  Sidalcea diploscypha Joseph P. Tracy 1950-6-23 18871 Humboldt 3 mi ne Alderpoint (Dobbyn Creek); , ne of Alderpoint 213 Comment
  UC1198397  Sidalcea diploscypha Joseph P. Tracy 1942-6-15 17166 Humboldt 5 mi n Garberville; n of Garberville 152 Comment
  CAS-BOT-BC205577  Sidalcea malachroides F. H. Utech 1986-5-23 86 -399 Humboldt Ca. 3.0 mi NW of Petrolla on Mattole Road (Humboldt Co. hwy F3C) enroute to Capetown 80 Comment
  HSC93948  Sidalcea malachroides Claire Golec 1999-6-2 Humboldt HB&M, old landing off of skid road, along ridgeline above Van Duzen River 427 Comment
  HSC73172  Sidalcea malviflora M. A. Baker 1980-5-18 1350 Humboldt Near Black Mtn. 792 Comment
  HSC69889  Sidalcea malviflora subsp. nana Thomas W. Nelson, Jane Nelson 1977-7-30 3663 Humboldt Beside State Rte. 36, 1 mi. E of Dinsmore. 732 Comment
  HSC46167  Sidalcea oregana subsp. eximia J. P. Smith, Steve Selva 1970-6-30 4122 Humboldt Comment
  UC668143  Sidalcea oregana subsp. eximia Joseph P. Tracy 1937-8-22 15671 Humboldt 2 mi s Fields Landing (at Still Ranch); s of Fields Landing, at Still Ranch 6 Comment
  HSC75493  Sidalcea oregana subsp. spicata J. O. Sawyer 1980-7-18 3635 Humboldt North Trinity Mountain Research Natural Area, north of Mill Creek Lake to Red Cap Hole. Comment
  HSC99084  Silene bernardina Cara Witte 2008-8-6 1014 Humboldt Board Camp Mountain. Road to Tri Board Camp. 1486 Comment
  RSA47132  Silene californica Doris K. Kildale 1927-8-16 1139 Humboldt Trinity Summit Trail beween Patterson s and Horse Linto Creek. 213 Comment
  UC659355  Silene californica Lincoln Constance, Alan A. Beetle 1940-5-16 2610 Humboldt coastal bluffs above Alton; above Alton Comment
  UC13584  Silene campanulata subsp. glandulosa W. C. Blasdale 1896-6-8 Humboldt Mad River Comment
  HSC36645  Silene gallica J. D. Ackerman 1974-5-25 261 Humboldt Trinidad, South Trinidad Beach, S of Trinidad Head. Comment
  CAS-BOT-BC181223  Silene hookeri subsp. bolanderi Volney Rattan 1883-1-1 s.n. Humboldt Mad River Comment
  SEINET10479233  Silene hookeri subsp. bolanderi Botany 1985-4-20 BOTANY s.n. Humboldt T34n,r6e,sec.14,h.m.; Burnt ranch campground off hwy 299. Open area near a Meadow 433 Comment
  CAS-BOT-BC389054  Silene laciniata subsp. californica Doris K. Kildale 1928-6-24 7060 Humboldt Redwood Creek at Berry's 289 Comment
  CAS-BOT-BC389067  Silene laciniata subsp. californica Alice Eastwood; John Thomas Howell 1937-6-23 4760 Humboldt Dinsmore's Comment
  HSC38072  Silene laciniata subsp. californica Thomas W. Nelson, James Nelson 1976-5-30 2635 Humboldt McKeown Ranch, N of Dinsmore. Comment
  UC668088  Silene lemmonii Joseph P. Tracy 1933-7-25 12870 Humboldt Grouse Mountain 1524 Comment
  HSC91612  Sinapis arvensis E. Mackey 1986-12-18 Humboldt Patrick's Point State Park, along Patrick's Point Drive Comment
  CAS-BOT-BC75285  Sisymbrium officinale Joseph P. Tracy 1933-8-22 12976 Humboldt Eureka. 60 Comment
  UC1197804  Smilacina racemosa Joseph P. Tracy 1936-8-7 15106 Humboldt 2 mi se Devil's Hole; Trinity Summit 1584 Comment
  UC666973  Smilacina racemosa Joseph P. Tracy 1938-6-13 15908 Humboldt Horse Mountain 1432 Comment
  UC15044  Smilacina stellata J. P. Tracy 1901-4-26 1057 Humboldt Humboldt Hill Immediate Vicinity of Eureka 0 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
  CAS-BOT-BC231718  Solanum umbelliferum Joseph P. Tracy 1949-5-8 18293 Humboldt Carlotta. Open flat by old Strong's District School House, 5 miles east of town 60 Comment
  RSA473662  Solidago canadensis subsp. elongata M. B. Dunkle 1936-8-18 4812 Humboldt Fortuna. Comment
  HSC75261  Solidago elongata J. O. Sawyer, M. A. Ericksen 1980-8-18 4055 Humboldt Slopes below Mill Creek Lakes, N Trinity Mtn. Research Natural Area 1707 Comment
  HSC76412  Solidago elongata D. K. Imper 1981-7-21 887 Humboldt Near Table Bluff 38 Comment
  UC165026  Solidago elongata J. P. Tracy 1900-8-26 923 Humboldt immediate vicinity Eureka 0 Comment
  HSC12310  Solidago spathulata Wendell Wood 1970-10-7 308 Humboldt Old Hwy. 101, E side of Freshwater Lagoon 46 Comment
  LA204223  Solidago spathulata Carl Epling; Mrs. Epling 1935-8-15 sn Humboldt Arcata Spit Comment
  UC1541619  Solidago velutina subsp. californica H. E. and S. T. Parks 1937-9-1 24081 Humboldt Trinidad , Trinidad (Spruce Cove) 64 Comment
  UC582436  Sonchus asper Joseph P. Tracy 1932-6-4 10132 Humboldt Bridgeville 198 Comment
  UC1198766  Sorbus californica Doris K. Kildale 1926-9-5 2635 Humboldt on trail between Red Peak and Signal Peak; Lasseck's Peaks 1676 Comment
  HSC63283  Sorbus scopulina M. A. Baker 1979-6-29 934 Humboldt Head of Oregon Creek Comment
  RSA10099  Sorghum halepense Joseph P. Tracy 1925-9-6 7263 Humboldt Trinity River Valley, Near the south fork Comment
  POM312952  Sparganium angustifolium subsp. emersum S. Galen Smith, Malcolm A. Nobs 1949-8-9 1228 Humboldt 1 mile north of Arcata at junction of Highways 101 and 299, Mad River Valley. Comment
  UC176175  Sparganium erectum subsp. stoloniferum Joseph P. Tracy 1912-10-20 3987 Humboldt Loleta Northern Coast Ranges, Eel Valley (lower Eel Valley) 15 Comment
  CAS-BOT-BC235368  Spartina densiflora Malcom A. Nobs; S. Galen Smith 1949-8-3 1180 Humboldt Near mouth of the Elk River, ca. 4 miles south of Eureka on Highway 101 Comment
  UCR122386  Spartina foliosa George K. Helmkamp, E. A. Helmkamp 2001-7-8 6994 Humboldt North Coast, north spit of Samoa Peninsula, 0.5 mi north of CA Hwy 255 bridge over Humboldt Bay 6 Comment
  HSC100418  Spergula arvensis Carl C. Marshall Apr 1887 398 Humboldt Fields, etc. Comment
  RSA12532  Spiraea douglasii Carl B. Wolf 1934-7-2 5906 Humboldt 4.5 miles from Snow Camp on road to Bald Mt (Mtns E of Korbel). 1067 Comment
  UC14209  Spiraea douglasii Chesnut and Drew 1888-8-10 Humboldt Arcata Comment
  HSC55605  Spiraea splendens var. splendens Overton, Butler 1979-7-23 9444 Humboldt Near Horse Mtn. Mine, close to the town of Willow Creek 1295 Comment
  UC666997  Spiranthes porrifolia Joseph P. Tracy 1930-6-15 8767 Humboldt summit of ridge between Dobbyn Creek and Alder Point (near Alder Point) 304 Comment
  UC666995  Spiranthes romanzoffiana Joseph P. Tracy 1937-8-12 15640 Humboldt Snow Camp 1402 Comment
  HSC37807  Spiranthes romanzoffiana A. Montalvo, J. D. Ackerman 1976-8-11 786 Humboldt W side of Freshwater Lagoon, along Hwy. 101 Comment
  HSC62698  Spirodela polyrhiza Michelle Stevens 1979-5-18 120 Humboldt Ponds across from Clam Beach 0 Comment
  UC154007  Stachys ajugoides var. rigida Joseph P. Tracy 1908-6 2814 Humboldt opposite Buck Mountain; Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  UC175781  Stachys ajugoides var. rigida Joseph P. Tracy 1912-7-27 3881 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  UCLA71137  Stachys ajugoides var. rigida H. L. Mason 1932-7-21 7103 Humboldt Big Lagoon Comment
  SD93024  Stachys chamissonis W. Bertsch 1953-7-30 230 Humboldt Highway 101, 5 miles north of Arcata. Comment
  CAS-BOT-BC175344  Stellaria borealis subsp. sitchana Doris K. Kildale 1926-3-24 1684 Humboldt Ryan Slough near the Occidental Ranch Comment
  UC1116226  Stellaria borealis subsp. sitchana Joseph P. Tracy 1947-8-24 17904 Humboldt Box Camp; Trinity Summit 1463 Comment
  UC668078  Stellaria borealis subsp. sitchana Joseph P. Tracy 1935-5-24 13817 Humboldt Eureka 91 Comment
  UC1103543  Stellaria crispa Joseph P. Tracy 1938-9-4 16140 Humboldt Coon Creek; Trinity River Valley 152 Comment
  JEPS51121  Stellaria media Lincoln Constance 1934-5-31 754 Humboldt Bull Creek Flat South Fork Eel River, Bull Creek Region (along Bull Creek, from w boundary of park to Grasshopper Pk (Squaw Cr) rd, n side of creek) Comment
  HSC4277  Stellaria media Lincoln Constance 1934-5-31 754 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
  HSC58409  Stipa lemmonii Terry Griswold, Marvin Butler 1979-7-10 7124 Humboldt Near Board Camp Mtn., close to the town of Willow Creek. 1350 Comment
  HSC40560  Stipa occidentalis var. californica Thomas W. Nelson, Jane P. Nelson 1976-7-1 2927 Humboldt Along ridge W of Lassic Peak (Signal Peak). 1738 Comment
  UCD84700  Streptanthus tortuosus Robert E. Preston 2009-5-27 2681 Humboldt 5.9 mi S of Weitchpec, along Hwy 96. 188 Comment
  JEPS54025  Streptanthus tortuosus var. orbiculatus W. L. Jepson Jul 16 1902-Jul 23 1902 2118 Humboldt Trinity Summit 2133 Comment
  UC1198800  Streptanthus tortuosus var. orbiculatus Joseph P. Tracy 1932-5-17 10089 Humboldt river bar Northern Coast Ranges, Trinity River Valley 152 Comment
  UC1541461  Streptanthus tortuosus var. orbiculatus W. K. Parks July, 1933 Humboldt Buck Mountain Comment
  HSC58202  Streptanthus tortuosus var. tortuosus Walter Overton 1979-8-1 12306 Humboldt Near Packsaddle Ridge, close to the town of Hoopa 1402 Comment
  UC1103498  Streptopus amplexifolius var. americanus Joseph P. Tracy 1936-8-7 15094 Humboldt head of Little Hors-Linto Creek; Trinity Summit 1371 Comment
  UC562305  Swertia radiata Joseph P. Tracy 1932-7-20 10731 Humboldt Corral Prairie Trinity Summit 1584 Comment
  CDA9702  Symphoricarpos albus D. G. Kelch 2007-7-25 7 .506 Humboldt Along Hwy 299 between Lord-Ellis Summit and Hwy 96. Comment
  HSC39184  Symphoricarpos albus var. laevigatus D. E. Anderson, J. P. Smith 1971-6-28 - 1216 Humboldt Along Mad River, 2 mi. S of Blue Lake. Comment
  UC169337  Symphoricarpos albus var. laevigatus Joseph P. Tracy 1908-6 2883 Humboldt opposite Buck Mountain (Valley of Van Duzen River); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  CAS-BOT-BC99172  Symphyotrichum chilense Henry M. Pollard 1956-10-14 s.n. Humboldt Rocky crevices along Klamath River near mouth of Pearch Creek, Orleans. Comment
  CAS-BOT-BC98973  Symphyotrichum foliaceum var. parryi Doris K. Kildale 1925-8-17 1215 Humboldt Trinity Summit near Ranger Station 1828 Comment
  UCD150385  Symphyotrichum lentum William Anderson and H. Mc. 1964-8-6 s.n. Humboldt Little River. Comment
  UC963847  Symphyotrichum subspicatum H. E. Parks and M. Jackson 1941-8-1 24197 Humboldt Big Lagoon North Coast Ranges Comment
  UC902235  Synthyris reniformis Joseph P. Tracy 1945-5-15 17509 Humboldt Kneeland Prairie 762 Comment
  JEPS9928  Synthyris reniformis Joseph P. Tracy 1926-2-28 7380 Humboldt East Fork of Willow Creek (Willow Creek Canyon); Northern Coast Ranges 457 Comment
  UC902237  Synthyris reniformis Joseph P. Tracy 1941-3-26 16812 1/2 Humboldt Willow Creek Canyon, along Trinity Highway Willow Creek Canyon 457 Comment
  UC127603  Tanacetum camphoratum J. Burtt Davy 1899-6-30 6183 Humboldt near Ferndale (North Coast Ranges); North Coast Ranges Comment
  SEINET4016798  Tanacetum camphoratum O. M. Clark 1932-1 663 Humboldt North Eureka. Comment
  SBBG65851  Tanacetum vulgare L. Rowntree -Jul-1931 Humboldt near Ferndale Comment
  SEINET11798896  Taraxacum laevigatum J. P. Tracy 1948-1 17973 Humboldt Trinity River at Willow Creek Comment
  RSA167418  Taraxacum officinale Joseph P. Tracy 1943-4-10 17415 Humboldt Eureka Comment
  UC1196936  Taraxia ovata Joseph P. Tracy 1942-5-16 17343 Humboldt w side of river near Garberville; S. Fork of Eel River 152 Comment
  RSA254744  Tauschia kelloggii Thomas W. Nelson, James Nelson 1973-5-28 956 Humboldt McKeown Ranch north of Dinsmore. Comment
  CAS-BOT-BC85214  Taxus brevifolia Doris K. Kildale 1926-8-31 2601 Humboldt Union Mattole - Geo. 7 Niner Ranch, Mattole River Valley Comment
  CAS-BOT-BC85218  Taxus brevifolia Doris K. Kildale 1926-8-15 2503 Humboldt Willow Creek Canyon 769 Comment
  SBBG319  Taxus brevifolia H. and M. Dearing 1939-6-23 3691 Humboldt E fork of Willow Crk 609 Comment
  SJSU685  Taxus brevifolia A. W. Jacobs 1941-6-15 Humboldt border of road (Hwy 299) between Blue Lake & Redwood Creek Comment
  HSC49031  Tellima grandiflora Patricia Shesgreen 1978-5-5 63 Humboldt 5.1 mi. S of Ferndale on Mattole Rd. Comment
  BLMAR80  Tellima grandiflora Jennifer Anthony-Wheeler 1994-6-2 80 Humboldt IAQUA, growing on moist cut bank along lgging rd 853 Comment
  CAS-BOT-BC447405  Tellima grandiflora Alice Eastwood 1907-4-22 22 Humboldt Trinidad, Light-house Point Comment
  HSC100622  Thalictrum polycarpum Carl C. Marshall Jun 1887 410 Humboldt Throughout Humboldt County. Comment
  RSA728070  Thinopyrum intermedium Gary D. Wallace 1979-6-24 1866 Humboldt Brush Mountain Lookout, SW of the town of Willow Creek. 1216 Comment
  UC1198809  Thlaspi montanum var. montanum Harold E. Parks and Joseph P. Tracy 1934-6-14 11029 Humboldt Horse Mt. 1402 Comment
  UC1198810  Thlaspi montanum var. montanum Joseph P. Tracy 1934-7-18 13431 1/2 Humboldt Grouse Mountain; North Coast Ranges, Grouse Mountain 1524 Comment
  RSA47093  Thuja plicata Doris K. Kildale 1926-8-28 2567 Humboldt Wild Cat ridge on Ferndale - Capetown road near Boynton s 457 Comment
  CAS-BOT-BC88318  Thysanocarpus curvipes Doris K. Kildale 1926-4-25 1803 Humboldt Willow Creek Flat. 152 Comment
  HSC100464  Thysanocarpus curvipes Carl C. Marshall Apr 1887 370 Humboldt Hoopa Valley. Comment
  UC1198819  Thysanocarpus curvipes Joseph P. Tracy 1933-5-18 12188 Humboldt near Blue Lake (along Mad River); , near Blue Lake 15 Comment
  SBBG70435  Tiarella trifoliata var. unifoliata L. Rowntree 1931-7-23 Humboldt Carlotta Comment
  CAS-BOT-BC436913  Tiarella trifoliata var. unifoliata Ira L. Wiggins 1930-7-22 4594 a Humboldt Redwood Creek between Blue Lake and Willow Creek Comment
  JEPS43495  Tiarella trifoliata var. unifoliata Lincoln Constance 1934-5-26 653 Humboldt North Dyerville Flat Grove Bull Creek Region (near Founders' Tree, Bull Creek Region, South Fork Eel River); South Fork Eel River, Bull Creek Region 48 Comment
  RSA29344  Tiarella trifoliata var. unifoliata E. K. Balls, Percy C. Everett 1953-10-11 18599 Humboldt Fleishman s Grove, north boundary, Hwy 101 between Miranda and Weott. 152 Comment
  UC1211979  Tiarella trifoliata var. unifoliata H. W. Grinnell 1932-7-23 49 Humboldt South Fork Mountain; below McKay Camp 1524 Comment
  UC858947  Tolmiea diplomenziesii Eliz. Parsons Hawver Jun 1915 Humboldt Carlotta Comment
  HSC73841  Tonella tenella Gail Newton 1980-6-7 134 Humboldt Near Brush Mtn. 1128 Comment
  UCD93213  Torreyochloa pallida var. pauciflora A. H. Murphy 1951-7-1 84 Humboldt shore of Bransetter Lake south of Capetown. Comment
  UC902124  Toxicodendron diversilobum Joseph P. Tracy 1949-8-8 18404 Humboldt Trinity R. Valley at Willow Creek Trinity R. Valley, Willow Creek 152 Comment
  HSC63067  Tradescantia ohiensis David Wheeler 1979-5-17 115 Humboldt Stagecoach Rd., 1 mi. from the Trinidad Post Office Comment
  CAS-BOT-BC377101  Tragopogon porrifolius Doris K. Kildale 1925-3-23 587 Humboldt Eureka 30 Comment
  HSC62982  Tragopogon porrifolius M. Dean Griswold Jr. 1979-5-29 80 Humboldt NW of Plant Operations, Humboldt State University campus Comment
  BLMAR387  Triantha occidentalis Jennifer Anthony-Wheeler 2004-7-1 387 Humboldt Horse Mtn, mixed conifer in serp.seep Comment
  UC1239719  Trichostema laxum Joseph P. Tracy 1933-11-26 13123 Humboldt Kneeland Prairie Comment
  HSC73246  Trientalis latifolia M. Baker 1980-5-18 1326 Humboldt Near Black Mtn. 1006 Comment
  RSA183505  Trientalis latifolia D. E. Anderson 1965-5-8 3651 Humboldt 3 miles N of Willow Creek along road on E side of Trinity River. Comment
  RSA460855  Trientalis latifolia W. Hutchinson 1927-05 s.n. Humboldt [Unspecified] Comment
  RSA69006  Trientalis latifolia F. W. Peirson 1923-7-9 s.n. Humboldt first summit on road between coast and Eel River Comment
  BLMAR717  Trifolium albopurpureum Jennifer Wheeler 2011-5-20 717 Humboldt King range, near strawberry rock 7 Comment
  UCD107571  Trifolium albopurpureum W. Williams 1951-1 s.n. Humboldt Keithly Ranch. Comment
  UC1197213  Trifolium albopurpureum var. dichotomum Joseph P. Tracy 1912-6-9 3668 Humboldt Alton Northern Coast Ranges Comment
  BLMAR385  Trifolium angustifolium Jennifer Anthony-Wheeler 2004-6-28 385 Humboldt King range, Mouth of Mattole River, along road in willow thickets 36 Comment
  UC1223375  Trifolium arvense Joseph P. Tracy 1941-7-26 16970 Humboldt near 9th (G Street); Eureka Comment
  SDSU5270  Trifolium arvense D. F. Howe 1979-6-25 5195 Humboldt #299, one milesouth of Willow Creek. Comment
  POM160892  Trifolium bifidum Joseph P. Tracy 1922-4-30 5992 Humboldt Trinity River Valley, near Willow Creek. 152 Comment
  UC1541600  Trifolium ciliolatum Harold E. Parks May 1923 1497 Humboldt Eel River, McCanns Comment
  UC162857  Trifolium cyathiferum Joseph P. Tracy 1908-6 2827 Humboldt nw slope Buck Mtn; Northern Coast Ranges 1219 Comment
  SEINET6934955  Trifolium depauperatum var. amplectens Wanda P. Vestal, A. G. Vestal 1937-6-22 s.n. Humboldt Kneeland prairie, about 4 miles southeast of Kneeland. Comment
  UC162778  Trifolium dubium J. P. Tracy 1900-6-23 857 Humboldt immediate vicinity Eureka 0 Comment
  HSC15117  Trifolium dubium A. E. Inman 1982-5-25 Humboldt N bank of Mad River, 200 yrds. W of Lindsey Creek Comment
  RSA135394  Trifolium eriocephalum subsp. eriocephalum Volney Rattan 1878-1 s.n. Humboldt Kneeland Prairie. Comment
  POM214889  Trifolium eriocephalum subsp. eriocephalum Joseph P. Tracy 8821 Humboldt Buck Mountain Comment
  UCD107930  Trifolium eriocephalum subsp. eriocephalum W. A. Williams 1956-6-1 s.n. Humboldt Kneeland Soil Series, Kneeland. 822 Comment
  HSC15124  Trifolium fucatum Francis Winter 1960-4-24 Humboldt Redwood Creek Ranch 381 Comment
  UC1197030  Trifolium fucatum Joseph P. Tracy 1913-6-20 4233 Humboldt nw slope Buck Mtn (lower foot); Northern Coast Ranges Comment
  RSA168897  Trifolium fucatum var. fucatum Joseph P. Tracy 1938-6-17 15950 Humboldt Cape Mendocino, near ocean shore, south of point of the Cape. Comment
  UC1197195  Trifolium gracilentum J. P. Tracy 1899-6-2 106 Humboldt near Bucksport (immediate vicinity of Eureka) 0 Comment
  HSC98880  Trifolium longipes subsp. hansenii Cara Witte 2007-6-1 166 Humboldt Horse Mountain Botanical Area. Along Forest Service 6N38. 1355 Comment
  HSC99726  Trifolium longipes subsp. oreganum Glenn W. K. Shelton 2010-7-16 20 Humboldt Titlow Hill Rd., turnout on right 0.9 mi. S of Cold Springs, 0.2 mi. down road from Titlow Hill Rd. 1421 Comment
  UC495662  Trifolium macraei Joseph P. Tracy 1932-5-10 9935 Humboldt Bear River edge Northern Coast Ranges 609 Comment
  HSC35028  Trifolium microcephalum Thomas W. Nelson, Jane P. Nelson 1975-5-24 1846 Humboldt McKeown Ranch, N of Dinsmore. Comment
  HSC45143  Trifolium microcephalum R. Sutherland 1978-5-12 12 .12578 Humboldt 282 Comment
  UC1223355  Trifolium microcephalum Joseph P. Tracy 1939-4-29 16237 1/2 Humboldt mouth of Slate Creek (banks of Klamath River) Comment
  RSA195475  Trifolium microdon C. R. Gunn 1963-6-2 2690 Humboldt Two miles SE of Arcata Comment
  UC1223348  Trifolium microdon Joseph P. Tracy 1950-6-18 18840 Humboldt 1 mi e Cape Mendocino (at roadside on top of ridge); Cape Ridge 304 Comment
  UC33307  Trifolium obtusiflorum Joseph Burtt Davy and Walter C. Blasdale 1899-6-20 5701 Humboldt Hoopa Valley Comment
  UC1197521  Trifolium obtusiflorum Joseph P. Tracy 1911-6-11 3241 Humboldt Trinidad Station Northern Coast Ranges 91 Comment
  HSC15158  Trifolium pratense W. F. Nickel 1965-5-16 Humboldt N Arcata next to the Humboldt Motor Hotel. Comment
  UC1103451  Trifolium variegatum var. melananthum J. P. Tracy 1898-4 158 Humboldt Eureka vicinity Northern Coast Region 0 Comment
  UC303198  Trifolium variegatum var. rostratum Joseph P. Tracy 1925-6-27 7145 Humboldt Alton Northern Coast Ranges 30 Comment
  UC1223529  Trifolium variegatum var. variegatum Joseph P. Tracy 1937-6-20 15336 Humboldt 10 mi upstream mouth of Bear River 152 Comment
  UC1197522  Trifolium willdenovii Joseph P. Tracy 1914-7-5 4557 Humboldt High Prairie Northern Coast Ranges, Bald Mtn 1066 Comment
  UC1197039  Trifolium wormskioldii Joseph P. Tracy 1927-6-18 8174 Humboldt Bear River Ridge Northern Coast Ranges 609 Comment
  JEPS37724  Trifolium wormskioldii Joseph P. Tracy 1918-7-3 4991 Humboldt Shelter Cove Northern Coast Ranges 15 Comment
  RSA90994  Trifolium wormskioldii F. W. Peirson 1923-7-11 3619 Humboldt Along road 7 miles north of Arcata. Comment
  HSC77399  Triglochin maritima L. P. Janeway 1983-5-19 298 Humboldt W edge of Arcata Bay, 0.5 mi. N of Eureka-Samoa bridge 3 Comment
  HSC90386  Triglochin maritima Jean Hanson 1980-4-12 44 Humboldt Indian (Gunther) Island, Humboldt Bay, city of Eureka, W end of island near marsh between dike and shore. Comment
  RSA69588  Triglochin maritima F. W. Peirson 1923-7-11 6478 Humboldt Flats north of Eureka. Comment
  SEINET3883156  Triglochin maritima Rick Lundquist 1979-5-31 110 Humboldt Arcata North Quadrangle. Mad River Slough ca. 1 mile west of intersection of Mad River Road and Iverson Lane.; 0 0 Comment
  HSC100368  Trillium angustipetalum J. Moore 2007-5-17 1483 Humboldt Big Flat Campground. 488 Comment
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Jan 10 2018
  HSC96775  Trillium kurabayashii M. Mesler 2006-6-6 609 Humboldt 1.2 mi. SE of intersection of USFS Rd. 8N01 and Box Camp loop 1524 Comment
  CAS-BOT-BC389696  Trillium ovatum Mary K. Wicksten 1972-3-8 39 Humboldt Arcata Comment
  CSUSB389  Trillium ovatum Keith Thompson 1970-12-27 Humboldt Arcata, California. 45 Comment
  UC1197814  Trillium ovatum unknown 1943-4-2 Humboldt Eureka Comment
  UCR13422  Trillium ovatum T. Wetherwax 1973-4-1 730104- 01 Humboldt c. 2 mi north of US Hwy 299 on Fieldbrook Road 61 Comment
  CAS-BOT-BC133395  Trillium ovatum Doris K. Kildale 1926-3-25 1630 Humboldt Foot of Liscom Hill near Essex 30 Comment
  RSA249440  Trillium ovatum D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5608 Humboldt Mount Lassic and 2 smaller peaks to immediate east. 1768 Comment
  UC1197829  Trillium ovatum Joseph P. Tracy 1918-4-21 4883 Humboldt near Newell's old camp, on old Kneeland Prairie rd. Newell's old camp; Northern Coast Ranges, around Humboldt Bay 304 Comment
  UC169335  Triodanis perfoliata Joseph P. Tracy July, 1908 2912 Humboldt near Low Gap (ridge between Van Duzen and Mad Rivers, Humboldt and Trinity Counties); Northern Coast Ranges, ridge btw Van Duzen and Mad Rivers 914 Comment
  UC1198034  Triphysaria eriantha subsp. eriantha Joseph P. Tracy 1921-4-24 5473 Humboldt facing South Fork of Eel River Phillipsville; Northern Coast Ranges, facing South Fork of Eel River 121 Comment
  UC1222434  Triphysaria eriantha subsp. eriantha Joseph P. Tracy 1927-5-8 7984 Humboldt vicinity Garberville; vicinity of Garberville 121 Comment
  JEPS2674 Image available Triphysaria eriantha subsp. eriantha Jos. P. Tracy 1901-5-18 2035 Humboldt Sandhills Humboldt Bay, Eureka; Eureka, Humboldt Bay Comment
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Oct 16 2007
  HSC99105  Triphysaria pusilla Cara Witte 2008-6-15 734 Humboldt Coldspring Camp. 1394 Comment
  UCD123426  Triphysaria versicolor subsp. versicolor Linda M. Barker 1976-4-13 1424 Humboldt 3 miles west of Arcata. Comment
  UC1537448  Triphysaria versicolor subsp. versicolor Gordon H. True Jr. 1936-5-12 475 Humboldt s Eureka; s of Eureka 15 Comment
  CAS-BOT-BC199622  Trisetum canescens Joseph P. Tracy 1932-7-16 10614 Humboldt At Corral Prairie 1524 Comment
  HSC31180  Trisetum canescens D. E. Anderson 1972-6-20 5751 Humboldt Along the Redwood Valley-Hoopa Rd., E of the summit. Comment
  RSA10082  Trisetum canescens Joseph P. Tracy 1932-7-16 10614 Humboldt Trinity Summit 1524 Comment
  RSA22685  Trisetum canescens Joseph P. Tracy 1935-5-24 13814 Humboldt Eureka Comment
  UC1714628  Trisetum canescens Joseph P. Tracy 1917-5-30 4788 Humboldt Dows Prairie; Northern Coast Ranges 60 Comment
  UC526692  Trisetum canescens Joseph P. Tracy 1932-7-16 10614 Humboldt Corral Prairie; Klamath Mountains 1524 Comment
  UCD93605  Trisetum canescens A. H. Murphy 1947-5-12 s.n. Humboldt Roadside near Carlotta. Comment
  HSC13121  Trisetum cernuum R. H. Berg 1963-5-1 60 Humboldt Arcata, H.S.U. campus. Comment
  SEINET244120 Image available Trisetum cernuum Joseph P. Tracy 1918-4-21 4881 Humboldt Openings in moist woods 'Newell's Camp' on old Kneeland Prairie Road. 305 Comment
  UC682073  Trisetum cernuum G. L. Stebbins Jr. and G. L. Church 1941-5-26 3107 Humboldt 5 mi n Orick (on U.S. Hwy 101) Comment
  RSA167426  Triteleia laxa Joseph P. Tracy 1950-6-8 18755 Humboldt At Davis Creek Mouth, south of Cape Mendocino Comment
  UC1197720  Triteleia laxa J. P. Tracy 1901-6-23 1188 Humboldt fields near Ryans Slough Hill; immediate vicinity of Eureka 0 Comment
  SEINET200846  Triticum aestivum J. P. Tracy 1922-7-16 6102 Humboldt CULTIVATED; Eureka 0 Comment
  SEINET3875748  Tsuga heterophylla K. S. Erdman 1970-6-18 4798 Humboldt Cal-Barrow Road, 3 miles E. of US 101 at boundary of Prairie Creek State Park (redwood National Park).; 0 Comment
  UC1585364  Tsuga heterophylla R. Raiche, K. Zadnik, and H. Forbes 1989-10-2 Humboldt e of Arcata (on Hwy 299, 28 km e of Hwy 101); Hwy 299 360 Comment
  CAS-BOT-BC73936  Turritis glabra S. K. Harris; J. P. Tracy; H. S. Yates 1936-6-17 3418 Humboldt Northwest slopes of Buck Mountain. 822 Comment
  SEINET200748  Urtica dioica subsp. gracilis Joseph P. Tracy 1927-3-6 7837 Humboldt Elk River. 30 Comment
  UC585978  Utricularia macrorhiza Joseph P. Tracy 1930-8-3 9146 Humboldt pond near Little Van Duzen R. on old rd. to Dinsmore's 762 Comment
  UC30064  Vaccaria hispanica Chesnut and Drew 1888-7-20 Humboldt Pilot Creek Comment
  HSC55151  Vaccinium cespitosum G. L. Clifton, Griswold 1979-8-1 12091 Humboldt Near N Trinity Mtn., close to the town of Hoopa. 1798 Comment
  CAS-BOT-BC199311  Vaccinium ovatum Hubert O. Jenkins 1943-8-1 s.n. Humboldt In dry rocky bed of Eel River, Richardson Grove Comment
  CAS-BOT-BC199316  Vaccinium ovatum P. C. Everett; E. K. Balls 1959-10-26 23974 Humboldt 4 mi. se. from Honeydew along Old Coast Road to Ettersburg 457 Comment
  HSC7909  Vaccinium ovatum C. B. Wolf 1927-8-27 1159 Humboldt Klamath River, 2 mi. below the mouth of the Salmon River Comment
  POM257944  Vaccinium ovatum H. E. Parks, S. T. Parks 1937-04 5638 Humboldt Spruce Cove, Trinidad. Comment
  UC1197768  Vaccinium ovatum Joseph P. Tracy 1918-5-5 4919 Humboldt Ocean Beach Northern Coast Region, Humboldt Bay Comment
  UC154184  Vaccinium ovatum P. E. Goddard 1901-6 20 Humboldt Hupa Comment
  UCD118109  Vaccinium ovatum T. I. Storer 1931-7-1 2221 Humboldt Coast. Comment
  HSC91894  Vaccinium parvifolium E. Mackey 1986-10-24 Humboldt Patricks Point State Park Comment
  UCR32119  Vaccinium parvifolium David J. Keil 1983-7-2 17329 Humboldt Horse Mountain Summit SW of Willow Creek 1509 Comment
  SD257259  Vaccinium parvifolium Jim R. Shevock 1972-3-26 1470 Humboldt Along Highway 299. 366 Comment
  JEPS9387  Valeriana sitchensis subsp. sitchensis Joseph P. Tracy 1930-7-17 8991 Humboldt South Fork Mountain at Mckay Camp South Fork Mountain 1676 Comment
  CAS-BOT-BC76049  Vancouveria hexandra Mrs. H. E. Wilder 1933-5-20 s.n. Humboldt Carlotta. Comment
  UC1196350  Vancouveria hexandra J. P. Tracy 1901-6-10 1135 Humboldt immediate vicinity Eureka; immediate vicinity of Eureka 0 Comment
  HSC49387  Vancouveria hexandra R. York 1979-4-9 213 Humboldt Behind Humboldt State University Comment
  HSC31136  Vancouveria planipetala J. O. Sawyer 1970-6-24 2267 Humboldt S of Mill Creek Gap, FS Rd. 10N02 1433 Comment
  HSC44512  Vancouveria planipetala Brad Klipfel 1973-7-1 122 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  UC1222526  Veratrum californicum var. californicum Joseph P. Tracy 1950-9-2 19347 Humboldt 2 mi s Field's Landing town (at Still Ranch) 6 Comment
  CAS-BOT-BC135774  Veratrum insolitum Doris K. Kildale 1925-9-5 1272 Humboldt Between Orick and Martin's Ferry 716 Comment
  HSC57172  Veratrum insolitum Overton, Butler 1979-7-26 9981 Humboldt Near Willow Creek, E Fork, close to the town of Willow Creek 1326 Comment
  UC582591  Verbascum blattaria Joseph P. Tracy 1937-6-26 15366 Humboldt Trinity River Valley at Willow Creek; Trinity River Valley at Willow Creek 152 Comment
  HSC75560  Verbena lasiostachys J. O. Sawyer, R. J. Cole 1977-7-3 3013 Humboldt Environs of Mud Spring, Big Hill Rd. (F.S. 8N01) 1524 Comment
  HSC72411  Veronica americana J. P. Smith 1973-5-26 6842 Humboldt Scotia Bluffs along the Eel River near Rio Dell. Comment
  HSC36886  Veronica serpyllifolia Thomas W. Nelson, Jane Nelson, James Nelson 1975-7-20 2058 Humboldt Beside Rd. 2S08 to Pine Mtn. Comment
  HSC44831  Veronica serpyllifolia subsp. humifusa Thomas W. Nelson, Jane Nelson 1977-6-19 3503 Humboldt Northwest of pond above Alder Springs 1585 Comment
  HSC90236  Vicia americana var. americana L. Watson, J. Meninga Apr 1991 23 Humboldt Near Manilla, Mad River Slough and Dunes. N end of parking lot, W side of trail. Comment
  UC160967  Vicia americana var. americana Mrs. M. H. Manning May 1902 Humboldt Hupa Comment
  RSA46826  Vicia americana var. americana Doris K. Kildale 1926-3-26 1643 Humboldt Old Fortuna Rd Comment
  SEINET12157874  Vicia hirsuta J. P. Tracy 1943-1 17428 Humboldt 7th and I Streets, Eureka Comment
  POM68419  Vicia sativa Marcus E. Jones 1924-4-26 s.n. Humboldt Eureka. Comment
  UCD108854  Vicia sativa subsp. nigra Linda M. Barker 1976-5-13 1481 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  HSC3229  Vinca major N. R. Waite 1965-5-18 35 Humboldt Along Hwy. 101, W of Humboldt State College campus. Comment
  HSC31741  Viola adunca Donald Spalinger 1974-5-12 58 Humboldt Williams Ridge Rd., 1 mi. N from junction with Bald Hills Rd. 732 Comment
  UC164812  Viola adunca Joseph P. Tracy 1908-6-7 2615 Humboldt Butler Valley on Mad River; Northern Coast Ranges, Mad River 152 Comment
  JEPS50216  Viola bakeri Joseph P. Tracy 1932-7-15 10581 Humboldt Ridges e of Corral Prairie; Klamath Mountains, Trinity Summit 1828 Comment
  HSC21799  Viola glabella D. E. Anderson 1965-5-15 3688 Humboldt About 7 mi. N of Hoopa on Bloody Camp Prairie Rd. Comment
  HSC32130  Viola glabella D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5592 Humboldt Mt. Lassic and two smaller peaks to immediate E 1768 Comment
  HSC55638  Viola glabella Overton, Butler 1979-7-24 9670 Humboldt Near Titlow Hill, close to the town of Willow Creek 1250 Comment
  HSC71790  Viola glabella Gail Newton 1980-6-16 178 Humboldt Near Monks Camp. 1097 Comment
  HSC91931  Viola glabella E. Mackey 1986-9-2 Humboldt Patrick's Point State Park Comment
  HSC97583  Viola glabella Cara Witte 2007-5-23 100 Humboldt Near Grouse Mtn. Along 4N32. Approximately 0.5 mi. S of intersection with 5N04 and 4N32E. 1398 Comment
  SBBG4803  Viola glabella H. and M. Dearing 1933-5-16 1087 Humboldt near Weott Comment
  UC502935  Viola glabella Joseph P. Tracy 1932-7-17 10682 Humboldt head of Brett Hole; Klamath Mountains, Trinity Summit 1828 Comment
  HSC38708  Viola hallii J. P. Smith 1976-5-29 8817 Humboldt Horse Mtn. 1402 Comment
  HSC78920  Viola hallii Jimerson, Imper 1982-5-17 1440 Humboldt Near Ashfield Ridge. 822 Comment
  SEINET6942419  Viola hallii Wanda P. Vestal, A. G. Vestal 1937-6-22 s.n. Humboldt Kneeland prairie, near serpentine outcrops, about 4 miles southeast of Kneeland. Comment
  SEINET11996974  Viola lobata F. H. Utech, Sato, T.; Ohara, M. 1990-1 90 -311 Humboldt Six Rivers National Forest, 0.5 mi S of CA 199 on French Hill Rd (USFS Rd 411) 150 Comment
  HSC45620  Viola ocellata Diane L. Reed 1978-4-22 31 Humboldt Tish Tang Campground, 5 mi. N of Willow Creek on Hwy. 96 Comment
  HSC71027  Viola ocellata Thomas W. Nelson 1977-4-20 3319 Humboldt Along FS 1N15 between Hwy. 36 and summit 915 Comment
  RSA125655  Viola ocellata E. K. Balls 1957-5-26 22608 Humboldt 2.6 mi NE from Harris on road to Alder Point. 701 Comment
  CHSC68506  Viola odorata Vernon H. Oswald 1997-4-10 8329 Humboldt Elk Head, north end of Trinidad State Beach. 30 Comment
  HSC34962  Viola praemorsa subsp. praemorsa Thomas W. Nelson 1975-5-24 1874 Humboldt McKeown Ranch, N of Dinsmore. Comment
  HSC32131  Viola purpurea subsp. purpurea D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5591 Humboldt Mt. Lassic and two smaller peaks to immediate E 1768 Comment
  HSC32282  Viola purpurea subsp. purpurea D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5615 Humboldt Mt. Lassic and two smaller peaks to immediate E 1768 Comment
  JEPS50231  Viola sempervirens Lincoln Constance 1934-5-31 760 Humboldt Bull Creek Flat along Bull Creek (from w boundary of Park to Grasshopper Peak (Squaw Creek)road, n side of creek); Bull Creek Region, South Fork Eel River Comment
  UC1198442  Viola sheltonii Joseph P. Tracy 1935-7-24 14167 Humboldt near Corral Prairie (Trinity Summit); Trinity Summit 1584 Comment
  SEINET200824 Image available Viola sheltonii J. P. Tracy 1913-6-17 4187 Humboldt Buck Mountain near the summit Comment
  CAS-BOT-BC203048  Vitis californica Henry M. Pollard 1945-9-4 s.n. Humboldt Near Camp Creek, Klamath River Canyon Comment
  UC165806  Vitis californica Joseph P. Tracy 1911-7-5 3333 Humboldt Willow Creek Northern Coast Ranges ((tributary of Trinity River), near its mouth) 152 Comment
  CAS-BOT-BC199803  Vulpia L. R. Abrams 1926-7-11 6050 Humboldt Mouth of Grizzly Creek on Van Duzon [Duzen] River Comment
  HSC104101  Vulpia bromoides Kyle Brown 2015-4-25 50 Humboldt Arcata, trail along the Mad River 8 Comment
  HSC90685  Vulpia bromoides Gail Newton 1982-6-5 3587 Humboldt Elk River Wildlife Area, Eureka. Comment
  HSC90693  Vulpia bromoides Gail Newton 1982-5-5 3559 Humboldt Elk River Wildlife Area, Eureka. Comment
  HSC9914  Vulpia microstachys C. S. Chavez 1965-5-1 64 Humboldt On Hwy. 299 2 mi. E of Willow Creek. Comment
  SEINET10604431  Vulpia microstachys var. ciliata Joseph P. Tracy 1913-6-18 Tracy 4194 Humboldt Northern Coast ranges of California. Dinsmore's Ranch; in valley of Van Duzen River Opposite Buck Mountain. In dry gully. Not common. 762 Comment
  RSA244994  Vulpia myuros D. E. Anderson 1970-5-21 5078 Humboldt Scotia Bluffs Comment
  HSC79517  Vulpia octoflora var. octoflora Kenneth Clark 1980-3-24 543 Humboldt Shelter Cove, N fork of Dead Man's Gulch. 76 Comment
  HSC41290  Whipplea modesta Brad Klipfel 1974-7-27 488 Humboldt Horse Mtn. Comment
  HSC98363  Whipplea modesta T. Jimerson, J. Pageau 1979-6-13 545 Humboldt Near Onion Lake, close to the town of Orleans. 549 Comment
  HSC20444  Whipplea modesta Francis Winter 1960-5-7 Humboldt 2 mi. N of Hwy. 299 on Redwood Valley Rd. 457 Comment
  JEPS90114  Wyethia angustifolia Dean William Taylor May 1972 1069 Humboldt near Arcata Comment
  UC176187  Zigadenus micranthus var. micranthus Joseph P. Tracy 1912-6-9 3692 Humboldt Alton Northern Coast Region 30 Comment



  Copyright © 2019 Regents of the University of California — Updated 11 January 2019
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