Search Results — 2000 specimen records retrieved (1389 records with coordinates)
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(For large data reqests, please contact Jason Alexander, jason_alexander@berkeley.edu.)
 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/consortium/).
 Records are made available under the CCH Data Use Terms.
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  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
  CAS-BOT-BC78060  Abies grandis Doris K. Kildale 1926-11-27 2841 Humboldt Alton Hill 45 Comment
  JEPS47985  Abies grandis W. L. Jepson 1921-9-10 9457 Humboldt Bull Creek flat South Fork of Eel River, Bull Creek flat 60 Comment
  UC1173736  Abies grandis Joseph P. Tracy 1939-5-30 16298 Humboldt 1 mi below Dinsmore's (along bank of Van Duzen River); Van Duzan River 731 Comment
  SEINET10537240  Abronia Mary Susan Taylor 1990-8-22 Taylor 6084 Humboldt Samoa Recreation Area on Samoa Peninsula, Staging Area, Eureka. Coastal scrub in ORV area. Comment
  HSC49509  Abronia latifolia R. York 1979-5-18 298 Humboldt Stabilized dunes opposite the Louisiana Pacific mill in Samoa Comment
  RSA0025083  Abronia latifolia Gary D. Wallace, Larry E. DeBuhr 1972-5-23 1083 Humboldt Along the beach at Freshwater Lagoon just south of Orick. Comment
  RSA0025085  Abronia latifolia Patricia Wilder 1968-8-21 4402 Humboldt Northern coastal arm of Humboldt Bay, ca. 2 miles SW of Samoa, near bay by roadside. Humboldt Bay drainage area. 5 Comment
  RSA0025087  Abronia latifolia Lyman Benson 1928-7-10 449 Humboldt Clam Beach, Trinidad. 9 Comment
  RSA0025093  Abronia latifolia P. A. Munz 1954-7-25 19867 Humboldt Humboldt Lighthouse south of Samoa. Comment
  HSC104082  Acacia melanoxylon J. St. Marie 2002-3-24 Humboldt Manila; Peninsula Drive; grove adjacent to maritime forest Comment
  CAS-BOT-BC330543  Acer circinatum Joseph P. Tracy 1942-7-26 17294 Humboldt Valley of South Yager Creek 609 Comment
  UC35086  Acer circinatum W. C. Blasdale 1890-1 Humboldt Blue Lake Comment
  UC170173  Acer glabrum var. glabrum Joseph Burtt Davy and Walter C. Blasdale 1899-6-21 5821 Humboldt Trinity Summit Comment
  HSC58053  Acer glabrum var. torreyi G. L. Clifton, Griswold 1979-8-1 11919 Humboldt Near Mill Creek Lakes, close to the town of Hoopa. 1692 Comment
  CAS-BOT-BC331588  Acer macrophyllum Doris K. Kildale; L. B. Kildale 1930-4-13 9575 Humboldt Bridgeville 289 Comment
  CAS-BOT-BC331591  Acer macrophyllum Mrytle Paulson 1918-4-28 s.n. Humboldt Eureka 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
  HSC28955  Achillea millefolium Thomas W. Nelson 1971-11-11 597 Humboldt Foot of Murray Rd., McKinleyville. Comment
  HSC31635  Achillea millefolium Glenn McGourty 1974-4-27 21 Humboldt Upper banks of the Mattole River Comment
  CAS-BOT-BC28577  Achillea millefolium J. Clausen 1949-6-22 2158 Humboldt 4 miles S of Scotia on redwood Highway in border of redwood forest near Eel River Comment
  CAS-BOT-BC28580  Achillea millefolium Doris K. Kildale 1926-8-8 2475 Humboldt Dyerville Bridge, on river bar 45 Comment
  HSC60005  Achillea millefolium M. A. Baker 1978-5-20 562 Humboldt East side of Klamath River Comment
  SFV18535  Achillea millefolium L. Hagenauer 2002-4-29 31 Humboldt Arcata. Path along McDaniel Slough leading to Humboldt Bay, V Street. Comment
  UC275323  Achlys californica Joseph P. Tracy 1923-6-20 6312 Humboldt White Thorn Valley Northern Coast Ranges, White Thorn Valley 304 Comment
  HSC3335  Achlys triphylla H. E. Parks, S. T. Parks May 1930 752 Humboldt Along Van Duzen River Comment
  HSC56446  Achlys triphylla Griswold, Butler 1979-7-12 7196 Humboldt Near Groves Prairie, close to the town of Willow Creek. 1256 Comment
  HSC61059  Achlys triphylla Jimerson, J. Pageau 1979-6-12 534 Humboldt Near Hopkins Butte, close to the town of Orleans 1036 Comment
  SFV5403  Achlys triphylla J. Turner, F. M. Ball 1962-7-10 s. n. Humboldt East Fork Willow Creek Forest Camp. Highway 299 about 5 miles west of Willow Creek. 457 Comment
  UC1145040  Achnatherum lemmonii Joseph P. Tracy 1950-6-15 18787 Humboldt 7 mi n Harris (Mail Ridge); Mail Ridge 1036 Comment
  UC526748  Achnatherum lemmonii Joseph P. Tracy 1928-6-24 8466 Humboldt Valley of South Yager Creek 762 Comment
  UC526755  Achnatherum lemmonii Joseph P. Tracy 1930-7-23 9125 Humboldt Horse Mountain Northern Coast Ranges, Horse Mountain 1524 Comment
  RSA47136  Achyrachaena mollis Doris K. Kildale 1925-5-31 s.n. Humboldt Bucilana Bridge, river terrace Comment
  HSC37971  Acmispon micranthus Peter Sorensen 1976-7-15 Humboldt Woodley Island Comment
  UC668267  Aconitum columbianum Joseph P. Tracy 1937-8-12 15661 Humboldt Snow Camp 1402 Comment
  HSC97602  Actaea rubra Cara Witte 2007-6-1 175 Humboldt Along Forest Service 5N10. 1.5 miles east of intersection with National Forest 1. 1365 Comment
  RSA416320  Adenocaulon bicolor Thomas W. Nelson, Jane P. Nelson 1977-7-1 3564 Humboldt Unsurveyed section east of sec. 25, Along north side of ridge between Bear and Blanket creeks. 1494 Comment
  JEPS336  Adiantum aleuticum W. L. Jepson 1932-7-26 16412 Humboldt Bull Creek Comment
  UC249662  Adiantum jordanii Joseph P. Tracy 1922-4-30 6025 Humboldt near Willow Creek Willow Creek; Northern Coast Ranges, Trinity River Valley 152 Comment
  UC249587  Aesculus californica Joseph P. Tracy 1921-10-22 5978 Humboldt Bridgeville; Northern Coast Ranges 304 Comment
  UC1239671  Agastache urticifolia Joseph P. Tracy 1939-8-5 16387 Humboldt Dinsmore's 731 Comment
  HSC58060  Ageratina occidentalis G. L. Clifton, Griswold 1979-8-1 11936 Humboldt Near Mill Creek Lakes, close to the town of Hoopa. 1692 Comment
  POM54273  Ageratina occidentalis P. E. Goddard 1906-06 638 Humboldt North fork of Eel River Comment
  UC127705  Ageratina occidentalis Joseph Burtt Davy and Walter C. Blasdale 1899-6-26 5884 Humboldt Francis Range North-Western California Comment
  SD62068  Agoseris apargioides var. maritima Darley F. Howe 1965-8-7 4121 Humboldt Orick. Comment
  HSC12532  Agoseris grandiflora Jos. Burtt Davy 1899-6-21 5727 Humboldt Hoopa Valley Comment
  HSC32125  Agoseris grandiflora D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5586 Humboldt Mount Lassic and 2 smaller peaks to immediate east 1768 Comment
  JEPS36264  Agoseris grandiflora Joseph P. Tracy 1921-7-24 5859 Humboldt Kneeland Prairie North Coast Ranges of California, Kneeland Prairie 762 Comment
  HSC63846  Agoseris grandiflora M. A. Baker 1979-6-25 914 Humboldt Comment
  UC1222942  Agoseris grandiflora Joseph P. Tracy 1948-8-8 18093 Humboldt Iaqua School House Iaqua Comment
  CAS-BOT-BC29627  Agoseris grandiflora var. grandiflora Joseph P. Tracy 1936-6-17 14949 Humboldt Buck Mountain, lower foothills of its northwest slope 792 Comment
  UC582752  Agoseris grandiflora var. grandiflora Joseph P. Tracy 1928-7-25 8488 Humboldt Big Lagoon Big Lagoon 60 Comment
  UC1173669  Agoseris grandiflora var. leptophylla Joseph P. Tracy 1939-8-5 16390 Humboldt (along Van Duzen River opposite Buck Mt.) Dinsmore's; Van Duzen River, Buck Mt. 762 Comment
  HSC75463  Agoseris heterophylla J. O. Sawyer 1980-7-18 3612 Humboldt North Trinity Mountain Research Natural Area, north of Mill Creek Lake to Red Cap Hole. Comment
  POM126129  Agoseris hirsuta Joseph P. Tracy 1923-6-18 6283 Humboldt Bear Ridge Ridge 305 Comment
  UC1222764  Agoseris retrorsa Joseph P. Tracy 1951-7-26 19591 Humboldt at extreme head of, gravelly spot, n side of Board Camp Mountain Redwood Creek; Board Camp Mountain 1541 Comment
  UC526887  Agrostis alba Joseph P. Tracy 1927-8-7 8326 Humboldt moist ground by Lack Pond; Northern Coast Ranges, Trinity River Valley 152 Comment
  UC1145067  Agrostis densiflora Joseph P. Tracy 1936-6-8 14873 Humboldt clay bluff close to ocean shore Trinidad 3 Comment
  CAS-BOT-BC127251  Agrostis exarata Harley P. Chandler 1901-6-1 1512 Humboldt North Coast Ranges. Klamath River. 426 Comment
  CAS-BOT-BC127289  Agrostis exarata H. S. Yates 1936-6-16 5664 Humboldt 1 mile southwest of Samoa. 6 Comment
  HSC96959  Agrostis exarata H. E. Parks May 1934 1161 Humboldt Trindad. Comment
  RSA25802  Agrostis exarata C. B. Wolf 1941-7-28 4344 Humboldt Big Lagoon, south side and W. of Redwood Highway. 6 Comment
  UC1145056  Agrostis exarata Joseph P. Tracy 1947-6-28 17749 Humboldt Larrabee Valley 731 Comment
  UC1145062  Agrostis exarata Joseph P. Tracy 1936-6-10 14917 Humboldt Willow Creek Trinity River Valley 152 Comment
  UC184873  Agrostis exarata Joseph P. Tracy 1912-7-31 3892 Humboldt Burr Valley, on nw slope of Buck Mountain, stream bank Northern Coast Ranges, Burr Valley, Buck Mountain 1066 Comment
  UC34115  Agrostis exarata Joseph Burtt Davy and Walter C. Blasdale 1899-5 6216 Humboldt Eureka Comment
  UCD52419  Agrostis exarata A. H. Murphy 1947-6-18 s.n. Humboldt Sherman Flat, 3.5 miles north of Blocksburg. Comment
  HSC98744  Agrostis gigantea Cara Witte 2007-7-12 522 Humboldt Forest Service Road 5N10. Approximately 3 miles from intersection with Ammon Ridge Road. 1306 Comment
  UC511548  Agrostis hallii Ira L. Wiggins 1932-7-25 5896 Humboldt roadsides near McKinleyville Comment
  UCD53046  Agrostis microphylla Joseph P. Tracy 1938-7-11 16050 Humboldt near Samoa, on Humboldt Bay. 6 Comment
  CAS-BOT-BC139132  Agrostis oregonensis Joseph P. Tracy 1934-7-18 13452 Humboldt North Coast Ranges. Grouse Mountain. 1524 Comment
  HSC8805  Agrostis oregonensis R. L. Jarvis 1962-2-9 3 Humboldt Big Lagoon marsh, S of Hwy 101. Comment
  CAS-BOT-BC139060  Agrostis pallens Doris K. Kildale 1925-8-17 1261 Humboldt Trinity Summit. 1917 Comment
  UC212862  Agrostis pallens Joseph P. Tracy 1919-9-18 5232 Humboldt Trinity Summit Northern Coast Ranges 1889 Comment
  HSC47784  Aira caryophyllea Michael A. Watkins 1978-6-10 10 Humboldt Arcata, E side of 7th St. overpass to Hwy. 101 Comment
  HSC73963  Aira caryophyllea Gail Newton 1980-6-7 127 Humboldt Near Brush Mountain 1128 Comment
  UC630529  Aira caryophyllea H. E. and S. T. Parks June, 1936 5850 Humboldt Spruce Cove Trinidad Comment
  UCD55782  Aira caryophyllea Linda M. Barker 1976-5-13 1475 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  HSC104039  Aira elegans C. Reynolds 2015-3-21 25 Humboldt Willow Creek; At bend in Trinity River, on the east end of Kimtu beach, near Camp Kimtu 135 Comment
  HSC102113  Allium amplectens M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 1017 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  HSC98054  Allium amplectens Cara Witte 2007-7-11 510 Humboldt National Forest 1. Approximately 1 mile south of intersection with 5N01. Near Spike Buck Mountain. 1591 Comment
  SEINET3883763  Allium amplectens D. W. McNeal, L. V. Mingrone 1967-6-12 382 Humboldt 8.0 mi. n.w. of Bridgeville on the county rd. to Kneeland, along the roadside.; 0 Comment
  HSC98539  Allium falcifolium Cara Witte 2008-6-9 697 Humboldt Board Camp Mountain. Forest Serivce Road 4E27. Fork Camp. 1509 Comment
  CAS-BOT-BC469016  Allium falcifolium Thomas W. Nelson; James L. Nelson 1980-6-10 5400 Humboldt Blocksburg Quad.; Along Swayback Ridge 4-wheel drive road 1.25 miles south of junction with Forest Service road. Comment
  UC1198204  Allium falcifolium Joseph P. Tracy 1930-7-23 9131 Humboldt at Cold Springs Grouse Mountain, Cold Springs 1432 Comment
  HSC71825  Allium hoffmanii Thomas W. Nelson, Jane P. Nelson 1980-6-27 5956 Humboldt Saddle between Mt. Lassic and peak to E 1677 Comment
  RSA293086  Allium hoffmanii Thomas W. Nelson, Jane P. Nelson 1980-6-27 5955 Humboldt Signal Peak south of Mount Lassic. 1524 Comment
  CAS-BOT-BC476602  Allium unifolium Doris K. Kildale 1926-5-15 1971 Humboldt Fleener Creek. Comment
  UC275536  Allium unifolium Joseph P. Tracy 1923-7-4 6531 Humboldt Valley of South Yager Creek Northern Coast Ranges, Valley of South Yager Creek 762 Comment
  HSC100703  Allocarya diffusa Carl C. Marshall Jun 1887 465 Humboldt Harris and Garberville Rd. Comment
  RSA119366  Allotropa virgata S. S. Tillett 1956-7-6 619 Humboldt 11 mi. from Orlenas, on Bar Shanty Road. 1159 Comment
  CAS-BOT-BC170948  Alnus rhombifolia Joseph P. Tracy 1930-11-2 9243 Humboldt Camp Grant, along Eel River 60 Comment
  UC1197945  Alnus rhombifolia Joseph P. Tracy 1931-12-25 9766 Humboldt Willow Creek Northern Coast Ranges, Trinity River Valley 152 Comment
  UC213002  Alnus rhombifolia Joseph P. Tracy 1919-12-28 5306 Humboldt 5 mi above Carlotta (river bar); Northern Coast Ranges, Van Duzen River 30 Comment
  CAS-BOT-BC169531  Alnus rubra Doris K. Kildale 1926-8-12 2488 Humboldt Moonstone Beach between Arcata and Trinidad Comment
  CAS-BOT-BC169548  Alnus rubra H. E. Parks; S. T. Parks 1938-4-1 24126 Humboldt Spruce Cove, Trinidad 60 Comment
  HSC3395  Alnus rubra D. A. Shally 1965-5-15 52 Humboldt Arcata, 1/4 mi. NE of HSC campus on Jolly Giant Creek Comment
  HSC3435  Alnus rubra Francis Winter 1960-3-26 Humboldt Samoa Peninsula 6 mi. W of Arcata Comment
  UCSC000176  Alnus rubra G. T. Nordstrom 1933-6-30 1425 Humboldt 1 mile N.N.E. of Orick 3 Comment
  SD42324  Alnus tenuifolia Carl B. Wolf 1937-8-13 9268 Humboldt North Coast Range, 12 miles east of Hoopa Valley on new road towards Trinity Summit 1675 Comment
  HSC99022  Alnus viridis subsp. sinuata Cara Witte 2008-7-16 908 Humboldt Board Camp Mountain. Forest Service Road 4N38. 1/2 mile south of intersection with National Forest 1. 1409 Comment
  RSA313194  Alopecurus geniculatus Malcolm A. Nobs, S. Galen Smith 1949-8-3 1164 Humboldt Borders of irrigation ditch, 1 mile south of Fields Landing, Eel River Valley. Comment
  UCD55896  Alopecurus geniculatus Joseph P. Tracy 1917-6-17 4816 Humboldt in Salmon Creek Valley, at south end of Humboldt Bay. 15 Comment
  UC1103311  Alopecurus saccatus Joseph P. Tracy 1912-7-21 3780 Humboldt Alton Northern Coast Region, Alton 30 Comment
  UC132199  Amaranthus retroflexus Joseph P. Tracy 1907-8-20 2599 Humboldt near hydesville; Northern Coast Region 60 Comment
  CAS-BOT-BC13700  Ambrosia chamissonis W. S. Cooper 1925-7-28 102 Humboldt Cape Mendocino Comment
  JEPS40955  Ambrosia chamissonis Joseph P. Tracy 1934-10-21 13687 Humboldt along coast in front of s end of Stone Lagoon; Dry Lagoon 3 Comment
  UC665537  Ambrosia chamissonis H. E. Parks 1941-8-1 24181 Humboldt Big Lagoon Comment
  UC204869  Ambrosia chamissonis Joseph P. Tracy 1918-7-1 4979 Humboldt 3 mi s, sw slopes Point of Cape; Cape Mendocino 3 Comment
  RSA264507  Ambrosia chamissonis var. chamissonis H. E. Parks 1941-09 24214 Humboldt Mouth of Little River Comment
  RSA183634  Amelanchier florida D. E. Anderson 1964-4-24 3541 Humboldt 0.5 mile from Hwy 299, on Titlow Hill road. Comment
  HSC56196  Amelanchier pallida Gilbert Muth 1979-8-1 12140 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1677 Comment
  UC466773  Amelanchier utahensis P. E. Goddard 1901-7-12 77 Humboldt Hupa Comment
  HSC39948  Ammophila arenaria Linda M. Barker 1976-6-22 1624 Humboldt 3 mi. W of Arcata Comment
  UCR121763  Ammophila arenaria George K. Helmkamp, E. A. Helmkamp 2001-7-8 7024 Humboldt North Coast, Samoa Peninsula, 2.6 miles south of CA Hwy 255 bridge across Humboldt Bay 15 Comment
  SACT000320  Ammophila arenaria D. Shillingbury 1963-5-11 Humboldt Coastal strand Comment
  CAS-BOT-BC213953  Amsinckia H. E. Parks 1933-3-1 4282 Humboldt Trinidad Comment
  UC199415  Amsinckia P. E. Goddard 1907-6-5 F 117 Humboldt Van Duysen Comment
  UC1239643  Amsinckia intermedia Joseph P. Tracy 1936-6-9 14897 Humboldt hills between the coast and Petrolia 213 Comment
  HSC17837  Anagallis arvensis A. E. Inman 1962-5-25 Humboldt Mad River, Lindsey Creek Jct., 200 yards W of Lindsey Creek 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
  HSC67040  Anaphalis margaritacea J. P. Smith 1971-10-9 5043 Humboldt Banks and flood plain of the Mad River above the fish hatchery. Comment
  HSC90221  Anaphalis margaritacea L. Watson, J. Watson Aug 1990 2 Humboldt Near Manilla; Mad River Slough and Dunes, 50 yds. N of parking lot, E. of trail Comment
  UC127736  Anaphalis margaritacea Mrs. M. H. Manning 1900-1-1 Humboldt near Hupa Comment
  HSC56099  Anemone deltoidea G. L. Clifton 1979-7-31 11817 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  HSC99371  Anemone deltoidea K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-6-24 20 Humboldt Near North Trinity Mtn, 11. 9 mi east of Hoopa on Big Hill Rd (8N01), at Box Camp, Six Rivers National Forest. 1433 Comment
  CAS-BOT-BC391783  Anemone deltoidea W. R. Dudley 1899-6-19 s.n. Humboldt Scotia--Shady Run. Comment
  HSC98540  Anemone oregana Cara Witte 2008-6-9 705 Humboldt Board Camp Mountain. Forest Service Road 4N38. 1418 Comment
  UC1087231  Angelica hendersonii Peter H. Raven, Richard Snow 1958-7-21 13660 Humboldt Cape Mendocino Comment
  JEPS16071  Angelica hendersonii Joseph P. Tracy 1923-9-23 6560 Humboldt Northern Coast Region, Alton Alton; Northern Coast Region, Alton 30 Comment
  CAS-BOT-BC271499  Anisocarpus madioides L. R. Abrams 1916-7-11 6017 Humboldt Mouth of Grizzly Creek on Van Duzen River Comment
  UC1222876  Antennaria suffrutescens Joseph P. Tracy 1947-7-9 17864 Humboldt Horse Mountain 1432 Comment
  BLMAR361  Anthemis cotula Jennifer Anthony-Wheeler 2003-5-21 361 Humboldt South Spit, Disturbed area on west side of road 9 Comment
  HSC33768  Anthoxanthum odoratum Lon Hall 1975-5-24 377 Humboldt Samoa Dunes, off Samoa Blvd., across from the boat landing Comment
  HSC8929  Anthoxanthum odoratum True Hoyle 1967-7-24 29667 Humboldt Oscar Stapp Ranch near Showers Creek and Showers Pass 1006 Comment
  HSC8931  Anthoxanthum odoratum J. W. Johnson 1962-4-18 1267 Humboldt Along the lane below the W.M. Lanphere Home, Samoa Peninsula Comment
  HSC8938  Anthoxanthum odoratum W. F. Nickel 1965-3-17 Humboldt Humboldt State University campus, behind wildlife building Comment
  HSC8947  Anthoxanthum odoratum T. L. Ackerman 1964-4-12 34 Humboldt One mi. up a logging road N from an elementary school near Freshwater Corners Comment
  RSA10084  Anthoxanthum odoratum Joseph P. Tracy 1925-7-5 7164 Humboldt High Prairie, on Bald Mountain. 1067 Comment
  UC1103320  Anthoxanthum odoratum Joseph P. Tracy 1926-4-17 7412 Humboldt Northern Coast Ranges, Eurek Eureka; Northern Coast Ranges, Eureka 0 Comment
  UC642322  Anthriscus caucalis H. E. Parks and Joseph P. Tracy 1927-4-24 7927 Humboldt Eureka; railroad station 6 Comment
  RSA425833  Antirrhinum vexillocalyculatum subsp. breweri T. A. Bonser 1931-7-14 14970 Humboldt Garberville. Comment
  RSA425834  Antirrhinum vexillocalyculatum subsp. breweri H. M. Pollard 1948-7-27 s.n. Humboldt Near mouth of Red Cap Creek. 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
  HSC77514  Aphanes occidentalis K. Berg 1984-4-8 525 Humboldt South spit of Humboldt Bay, 1.4 mi. S of South Jetty, E of road Comment
  UC1197614  Apocynum androsaemifolium Joseph P. Tracy 1912-7-27 3887 Humboldt Kneeland Prairie Northern Coast Ranges, Kneeland Prairie 762 Comment
  HSC97916  Apocynum androsaemifolium Cara Witte 2007-6-14 289 Humboldt Along National Forest 1, on Kinsey Ridge, 2 mi. N of White Oak Opening 1243 Comment
  RSA43832  Apocynum androsaemifolium subsp. pumilum H. M. Pollard 1948-7-31 s.n. Humboldt Orleans Mt. 1372 Comment
  HSC3218  Apocynum cannabinum Lincoln Constance 1934-6-11 848 Humboldt Bull Creek region, trail along E bank of S Fork of Eel, N Dyerville Flat Comment
  HSC3220  Apocynum cannabinum F. Morrell 1949-5-22 31 Humboldt Salyer Comment
  CAS-BOT-BC392160  Aquilegia formosa David D. Keck 1948-7-1 5974 Humboldt South side of Big Lagoon Comment
  HSC102054  Aquilegia formosa M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-13 959 Humboldt Forest edge surrounding Patterson Meadows 1566 Comment
  UCD95545  Aquilegia formosa H. P. Olmo 1931-6-8 s.n. Humboldt 5 miles north of Trinidad. Comment
  HSC64310  Aquilegia formosa var. formosa J. P. Smith 1973-5-26 6866 Humboldt Scotia Bluffs along the Eel River near Rio Dell Comment
  HSC55329  Aquilegia formosa var. truncata Griswold, Butler 1979-7-12 7169 Humboldt Near Groves Prairie, close to the town of Willow Creek. 1256 Comment
  CAS-BOT-BC17260  Arabidopsis thaliana Joseph Prince Tracy 1932-5-17 10091 Humboldt Northern Coast Ranges. Trinity River Valley, at Willow Creek. 152 Comment
  HSC57633  Arabis breweri var. breweri G. L. Clifton, Griswold 1979-7-25 10787 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1814 Comment
  HSC32848  Arabis glabra Thomas W. Nelson, James Nelson 1973-5-28 944 Humboldt McKeown Ranch N of Dinsmore Comment
  HSC6523  Arabis glabra D. E. Anderson 1962-5-10 2206 Humboldt Lanphere Ranch. Comment
  HSC99596  Aralia californica Overton, Butler 1979-7-24 14090 Humboldt Near Titlow Hill, close to the town of Willow Creek. 1250 Comment
  BLMAR229  Aralia californica Jennifer Anthony-Wheeler 1996-9-26 229 Humboldt King range, growing along the Kings Peak Rd in creek drainages 670 Comment
  HSC98778  Aralia californica Cara Witte 2007-7-25 579 Humboldt Forest Service Road 5N10. Approximately 2 miles south from intersection with Forest Service Road 5N41. 1290 Comment
  UC162626  Aralia californica Joseph P. Tracy 1911-7-5 3320 Humboldt near its mouth Willow Creek (tributary of Trinity R.); Northern Coast Ranges 304 Comment
  OBI33237  Arbutus menziesii David J. Keil 1983-7-1 17263 Humboldt Ca. 8 mi W of jctn US 101 along Bull Creek Flats rd Comment
  RSA175206  Arbutus menziesii R. F. Thorne 1957-9-2 19006 Humboldt Eel River. Burlington State Park, just S of Weott. Comment
  UC1222871  Arctium minus Joseph P. Tracy 1948-9-20 18223 Humboldt halfway between Hoopa and Weitchpec Comment
  UC1198673  Arctostaphylos Joseph P. Tracy 1937-4-3 15248 Humboldt Willow Creek Trinity River Valley 152 Comment
  CAS-BOT-BC23761  Arctostaphylos columbiana Joseph P. Tracy 1934-2-22 13134 Humboldt Vicinity of Trinidad Comment
  JEPS19870 Image available Arctostaphylos columbiana Joseph P. Tracy 1923-2-18 6141 Humboldt Big Lagoon Northern Coast Region; Big Lagoon, Humboldt Co. 6 Comment
  JEPS38976  Arctostaphylos columbiana Joseph P. Tracy 1934-2-22 13134 Humboldt vicinity of Trinidad Northern Coast Region 60 Comment
  UCD50679  Arctostaphylos columbiana Joseph P. Tracy 1937-7-17 15439 Humboldt Eureka. 45 Comment
  CAS-BOT-BC23736  Arctostaphylos columbiana C. Hart Merriam 1921-7-7 s.n. Humboldt Ridges west of the Van Duzen River. Comment
  HSC100252  Arctostaphylos densiflora J. P. Smith, & J. O. Sawyer 2010-5-2 12809 Humboldt Along Hwy. 96, N of Orleans 140 Comment
  HSC54574  Arctostaphylos glandulosa Overton, Butler 1979-7-24 9608 Humboldt Near Titlow Hill, close to the town of Willow Creek. 381 Comment
  HSC7631  Arctostaphylos glandulosa Doris K. Kildale 1927-1-30 2899 Humboldt Big Lagoon, flat on S side of Lagoon Comment
  HSC7633  Arctostaphylos glandulosa J. Pursell 1964-10-18 10185 Humboldt 5 mi. from Hwy. 299 on Bald Mtn. Road Comment
  UCSB11336  Arctostaphylos glandulosa Zinke, P. 1950-10-9 Humboldt King Peak 1219 Comment
  CAS-BOT-BC24824  Arctostaphylos glandulosa subsp. glandulosa Joseph P. Tracy 1934-7-9 13332 Humboldt Ridge 5 mi. s. of Harris on the road towards Bell Springs. 762 Comment
  UC1120179  Arctostaphylos glandulosa subsp. glandulosa A. E. Wieslander 1931-5-19 200 Humboldt near Orleans; Klamath Forest, Hoopa Quadrangle Comment
  JEPS38971  Arctostaphylos hookeri subsp. montana Joseph P. Tracy 1936-8-2 15075 Humboldt French Camp Ridge Northern Coast Ranges 1066 Comment
  NY42918  Arctostaphylos manzanita subsp. elegans J. B. Walker 1995-4-26 1389 Humboldt Six Rivers National Forest, Hwy 36, 2km W of Cobbs 800 Comment
  CAS-BOT-BC24326  Arctostaphylos manzanita subsp. manzanita L. R. Abrams 1918-6-15 7111 Humboldt Brannan Mt. near Willow Creek. 1371 Comment
  CAS-BOT-BC24372  Arctostaphylos manzanita subsp. manzanita Doris K. Kildale 1927-6-25 3583 a Humboldt Near Ettesburg. Comment
  UC153967  Arctostaphylos manzanita subsp. manzanita Joseph P. Tracy 1909-10-7 3112 Humboldt Gans Prairie Northern Coast Ranges 609 Comment
  HSC44397  Arctostaphylos nevadensis Brad Klipfel 1975-5-24 631 Humboldt Horse Mtn. Comment
  SBBG83920  Arctostaphylos nevadensis subsp. knightii R. Gankin, W. R. Hildreth 1967-10-26 1179 Humboldt French Camp Ridge, 21.4 mi E of US 101 on Bald Hills Rd from Orick Comment
  UCD52852  Arctostaphylos nevadensis subsp. knightii Roman Gankin; W. R. Hildreth 1967-10-26 1172 Humboldt 21.4 miles east of U.S. 101 on Bald Hills Road from Orick; French Camp Ridge. Comment
  HSC55172  Arctostaphylos patula Gilbert Muth 1979-8-1 12173 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1677 Comment
  UC21843  Arctostaphylos patula J. Burtt Davy 1899-6-22 5784 Humboldt Trinity summit North Coast Ranges 2133 Comment
  UC585903  Arctostaphylos patula Joseph P. Tracy Jul 16 1930-Jul 19 1930 9055 Humboldt along summit near Blake Lookout; Northern Coast Ranges, South Fork Mountain 1737 Comment
  CAS-BOT-BC43983  Arctostaphylos uva-ursi Joseph P. Tracy 1945-3-30 17499 Humboldt Eureka 45 Comment
  CAS-BOT-BC47216  Arctostaphylos uva-ursi Joseph P. Tracy 1940-10-3 s.n. Humboldt Near Samoa, on Humboldt Bay. 6 Comment
  SD41456  Arctostaphylos uva-ursi Edith A. Purer 1932-7-27 4136 Humboldt Samoa, near Arcata Comment
  SEINET2029875 Image available Arctostaphylos uva-ursi Joseph P. Tracy 1940-10-3 16740 Humboldt Near Samoa, on Humboldt Bay 6 Comment
  UC1196868  Arctostaphylos uva-ursi Joseph P. Tracy 1923-3-31 6170 Humboldt Table Bluff Northern Coast Region, around Humboldt Bay 60 Comment
  UC527561  Arctostaphylos uva-ursi C. B. Wolf 1931-8-30 2374 Humboldt Samoa Humboldt Bay 7 Comment
  UC526766  Aristida oligantha Joseph P. Tracy 1933-8-27 13000 Humboldt Robertson's Ranch Vicinity of Garberville (hillsides in sheep range) 304 Comment
  RSA296782  Armeria maritima subsp. californica Clark L. Miller 1979-5-24 2 -150 Humboldt Samoa Dunes off Samoa Blvd. Comment
  HSC44338  Arnica cernua Brad Klipfel 1975-6-17 684 Humboldt Horse Mtn. Comment
  HSC48024  Arnica cernua Brad Klipfel 1974-6-25 423 Humboldt Horse Mtn. Comment
  JEPS20972  Arnica discoidea Harley P. Chandler 1901-6-1 1400 Humboldt Klamath River North Coast Ranges, Klamath River 243 Comment
  JEPS20983  Arnica discoidea Joseph P. Tracy 1935-7-23 14154 Humboldt Brett Hole (lower end) Trinity Summit 1584 Comment
  JEPS20984  Arnica discoidea Joseph P. Tracy 1937-7-2 15398 Humboldt 2 mi e Grove's Prairie; Trinity Summit 1524 Comment
  CAS-BOT-BC82648  Arnica latifolia Doris K. Kildale 1926-4-25 1808 Humboldt Sugar Bowl Mountain on old road [frm.] from Willow Creek to Hoopa Comment
  HSC32483  Arrhenatherum elatius D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-17 5719 Humboldt McKeown Ranch, N of Dinsmore Comment
  HSC8991  Arrhenatherum elatius D. J. McVean 1965-5-18 77 Humboldt Old Arcata Rd., S of intersection with Indianola Rd. Comment
  UC1103325  Arrhenatherum elatius Joseph P. Tracy 1927-9-25 8369 Humboldt Northern Coast Ranges, Eureka Eureka; Northern Coast Ranges, Eureka 0 Comment
  HSC60011  Artemisia douglasiana M. A. Baker 1977-6-6 367 Humboldt Hoopa Comment
  UC198625  Artemisia douglasiana Joseph P. Tracy 1917-9-3 4856 Humboldt head of Redwood Creek (Janes Ranch) 914 Comment
  SEINET198593  Artemisia pycnocephala H. E. Parks, S. T. Parks Jun 1952 24495 Humboldt Samoa Comment
  UC1409182  Artemisia pycnocephala Robert F. Thorne and P. Everett 1965-8-5 35169 Humboldt Samoa Dunes 3 Comment
  CHSC68790  Aruncus dioicus var. pubescens Vernon Oswald 1997-6-5 8546 Humboldt Hwy. 299 between Willow Creek and Blue Lake, 1.1 mi west of East Fork Campground, 3.1 mi east of Titlow Hill Rd. 542 Comment
  UC492191  Aruncus dioicus var. pubescens Joseph P. Tracy 1932-7-18 10807 Humboldt Head of Brett Hole; Klamath Mountains, Trinity Summit 1828 Comment
  HSC102553  Asarum caudatum M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-29 1541 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1579 Comment
  CAS-BOT-BC400532  Asarum caudatum L. R. Abrams 1922-6-25 8259 Humboldt North of the Mad River near Arcata Comment
  HSC59473  Asarum caudatum M. A. Ericksen 1979-5-9 260 Humboldt Along Jolly Giant Creek, HSU campus Comment
  RSA114387  Asarum caudatum G. R. Campbell 1955-9-20 21468 Humboldt 4 mi. NE of Strongs Station (Van Duzen River) on Yager road Comment
  HSC41326  Asarum hartwegii Brad Klipfel 1974-8-2 514 Humboldt Horse Mtn. Comment
  HSC56462  Asclepias cordifolia Griswold, Butler 1979-7-12 7257 Humboldt Near Cedar Creek, close to the town of Willow Creek 1158 Comment
  UC249520  Asclepias speciosa Joseph P. Tracy 1922-9-3 6114 Humboldt Klamath River at Bluff Creek Northern Coast Ranges, Klamath River 91 Comment
  RSA47105  Asclepias speciosa Doris K. Kildale 1925-7-5 s.n. Humboldt Willow Creek Flat 152 Comment
  HSC1052  Aspidotis densa P. W. Shields May 1955 Humboldt 4 mi. W of Hoopa Comment
  HSC44354  Aspidotis densa Brad Klipfel 1974-5-8 317 Humboldt Horse Mountain Comment
  HSC54555  Aspidotis densa Overton, Butler 1979-7-24 9561 Humboldt Near Titlow Hill, close to the town of Willow Creek 1097 Comment
  RSA53857  Aspidotis densa Henry M. Pollard 1944-9-8 s.n. Humboldt Orleans Mountain 1524 Comment
  SEINET11852839  Aster chilensis J. P. Tracy 1950-1 19362 Humboldt Cape Ridge, 0.5 mi S of Capetown, along coast road, 1 i inland from Cape Mendocino 200 Comment
  UC205596  Astragalus gambelianus Joseph P. Tracy 1919-5-31 5147 Humboldt near Willow Creek (Valley of Trinity River, Northern Coast Ranges); Northern Coast Ranges, Valley of Trinity River 152 Comment
  CAS-BOT-BC193142  Astragalus rattanii var. rattanii Volney Rattan 1882-6-1 s.n. Humboldt Unspecified Comment
  JEPS21028  Astragalus rattanii var. rattanii Joseph P. Tracy 1926-5-15 7486 Humboldt Kneeland Prairie Northern Coast Ranges, Kneeland Prairie 762 Comment
  JEPS21029  Astragalus rattanii var. rattanii Chesnut and Drew 1888-7-10 Humboldt Jarnigan's Comment
  UC397265  Astragalus rattanii var. rattanii P. E. Goddard June, 1907 b. 124 Humboldt Van Duzen Comment
  CHSC118459  Astragalus umbraticus Courtney Wilson; Matt Groberg, Bob Meinke 2011-6-30 Humboldt On Green Diamond Resourse Company private land. Roadside edge on west slope of French Camp Ridge. 853 Comment
  JEPS109394  Astragalus umbraticus Dean W. Taylor 2009-7-14 20674 Humboldt vicinity Lake Prairie, reached via Guy Kerr Ranch Road off Snow Camp Road 1133 Comment
  JEPS118177  Astragalus umbraticus Dean W. Taylor 2009-7-14 20674 Humboldt vicinity Lake Prairie, reached via Guy Kerr Ranch Road off Snow Camp Road 1133 Comment
  UC179937  Astragalus umbraticus Joseph P. Tracy 1914-7-5 4575 Humboldt between High Prairie and Snow Camp (Bald Mountain); Northern Coast Ranges, Bald Mt., betw High Prairie-Snow Camp 1219 Comment
  HSC76042  Asyneuma prenanthoides Overton, Butler 1979-8-2 12569 Humboldt Near Bret Hole, close to the town of Hoopa 1554 Comment
  UCD66899  Asyneuma prenanthoides H. P. Olmo 1928-7-10 Humboldt Wooley Creek. Comment
  CAS-BOT-BC69524  Athyrium filix-femina subsp. cyclosorum Ludwig A. Waitzinger 1925-8-3 s.n. Humboldt Martins Ferry. Comment
  HSC91598  Athyrium filix-femina var. cyclosorum E. Mackey 1986-10-2 Humboldt Patrick's Point State Park by trail to Agate Beach Comment
  HSC4342  Atriplex patula D. E. Anderson 1961-9-13 1810 Humboldt Big Lagoon County Park Comment
  CDA23295  Atriplex patula var. obtusa Gordon Leppig 1999-10-25 1266 Humboldt Eureka, PALCO Marsh Comment
  HSC102945  Avena barbata J. P. Smith 2009-5-30 12598 Humboldt Arcata. Near intersection of Valley West and Giuntoli Road Comment
  UC1056069  Avena barbata J. I. Mallory 1955-1-16 111 Humboldt 2 mi e junction of Eel River and South Fork of Eel River 243 Comment
  CAS-BOT-BC98770  Baccharis douglasii Frank W. Peirson 1926-7-13 7061 Humboldt Mad River, vicinity of Blue Lake Comment
  HSC37666  Baccharis douglasii R. Sutherland 1976-8-19 14 .19876 Humboldt 236 Comment
  UC30349  Baccharis pilularis C. C. Marshall 1888-1-1 Humboldt Arcata Comment
  HSC28931  Baccharis pilularis subsp. consanguinea Diane Johnson 1972-11-14 Humboldt Butler Valley near Maple Creek Comment
  HSC5115  Baccharis pilularis subsp. pilularis Paul Shields 1955-9-29 Humboldt 1/2 mi. S of Fernbridge Comment
  HSC7002  Barbarea verna W. F. Nickel 1965-4-22 Humboldt HSU campus between the Wildlife and Biological Science buildings Comment
  POM118631  Barbarea vulgaris Marcus E. Jones 1924-4-26 s.n. Humboldt Scotia Comment
  HSC39790  Bellis perennis Peter Sorensen 1976-6-16 Humboldt Woodley Island Comment
  HSC89490  Bellis perennis P. A. Daly 1986-2-28 64 Humboldt Trinidad Head, along trail 61 Comment
  HSC75816  Bensoniella oregona Bill Copeland 1980-7-2 315 Humboldt Near Snow Camp Mtn. 1311 Comment
  UC1051579  Bensoniella oregona Joseph P. Tracy 1923-6-24 6363 Humboldt Bald Mountain in meadow near High Prairie; Northern Coast Ranges, Bald Mountain, nr High Prairie 1066 Comment
  UC1198387  Berberis aquifolium Joseph P. Tracy 1940-8-25 16711 Humboldt High Prairie Bald Mt 1066 Comment
  HSC73808  Berberis aquifolium var. repens M. A. Baker 1980-6-16 1930 Humboldt Near Monks Camp. 1097 Comment
  CAS-BOT-BC75681  Berberis nervosa C. B. Wolf 1931-8-30 2375 Humboldt 11 miles above Blue Lake on the Lord Ellis Road to Willow Creek. 304 Comment
  CHSC23182  Berberis nervosa Robert F. Thorne; P. Everett 1965-8-5 35138 Humboldt Mt. Chamisal: Below summit. 533 Comment
  HSC31651  Berberis nervosa Timothy B. Devine 1974-5-4 321 Humboldt 1/4 mi. N of junction of Hwy. 299 and Titlow Hill Rd., E facing slope 875 Comment
  HSC92017  Berberis nervosa E. Mackey 1986-10-24 Humboldt Patrick's Point State Park Comment
  HSC99384  Berberis nervosa K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-6-28 33 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  HSC42013  Berberis pinnata M. A. Baker 1977-4-23 173 Humboldt 2.5 mi. S of Shelter Cove Rd., S fork of Bear Creek at Wailaki Campground 561 Comment
  UC13491  Betula occidentalis Chesnut and Drew 1888-7-28 Humboldt Grouse Creek Comment
  HSC26828  Blechnum spicant Clifton Raymond Chesbrough 1973-6-19 73 Humboldt 0.25 mi. from Harris and T St. on U St. Comment
  UCSB8245  Blechnum spicant Robbins, G. 1936-8-1 Humboldt Near Strong's Station. Comment
  HSC70782  Boschniakia strobilacea Gail Newton 1980-7-24 1768 Humboldt Near Somes Mtn. 1615 Comment
  HSC74350  Boschniakia strobilacea Gail Newton 1980-6-17 221 Humboldt Near Onion Mtn. 1341 Comment
  UC1478440  Botrychium multifidum Keith Curry 1974-1 Humboldt 5 mi s Trinidad (roadside rest Hwy. 101) Comment
  CAS-BOT-BC420254  Boykinia occidentalis Ira L. Wiggins 1930-7-22 4694 Humboldt along bank of Redwood Creek between Blue Lake and Willow Creek Comment
  SBBG26977  Boykinia occidentalis R. S. Ferris 1937-8-21 9390 Humboldt above beach, Shelter Cove Comment
  RSA47155  Brickellia californica Doris K. Kildale 1926-8-29 2593 Humboldt Van Duzen River at Strong's Station Comment
  CAS-BOT-BC127680  Brickellia greenei Joseph P. Tracy 1935-7-30 14361 Humboldt Serpentine formatin, Salmon Summit 1767 Comment
  CAS-BOT-BC293762  Briza maxima D. H. Wilken; E. L. Painter 2007-6-4 16739 Humboldt Samoa Dunes, ca. 0.4 km W of US Coast Guard Station, North Spit, Humboldt Bay, SW of Eureka 5 Comment
  HSC83441  Briza maxima R. N. Raynor 1935-5-22 Humboldt Ft. Seward Comment
  UC526898  Briza maxima Joseph P. Tracy 1930-6-15 8758 Humboldt Alder Point North Coast Ranges 152 Comment
  HSC37934  Briza minor Peter Sorensen 1976-6-4 Humboldt N Spit of Humboldt Bay, S of Samoa near Humboldt County Airport Comment
  UCR123923  Brodiaea elegans subsp. elegans George K. Helmkamp, E. A. Helmkamp 2001-7-8 6967 Humboldt North coast hills., Calif. Hwy 36, 2.2 mi west of Dinsmore 732 Comment
  HSC22043  Brodiaea elegans subsp. elegans D. G. Hauger 1967-7-15 22 Humboldt Shower Pass Rd., Kelly's turn off 915 Comment
  JEPS7726  Brodiaea elegans subsp. elegans W. L. Jepson 1902-6 1960 Humboldt Hupa Road Redwood Creek (Redwood Creek) Comment
  SEINET12053853  Brodiaea stellaris J. P. Tracy 1950-1 18903 Humboldt McClellen Mt., just E of McClellen Rock, Burr Valley 762 Comment
  SEINET200766  Brodiaea terrestris subsp. terrestris Joseph P. Tracy 1942-6-15 17125 Humboldt Englewood Natural prairie near Redcrest resort 91 Comment
  UC1197744  Brodiaea terrestris subsp. terrestris J. P. Tracy 1896-7-4 521 Humboldt near Ft. Humboldt (immediate vicinity of Eureka); Eureka 0 Comment
  RSA167289  Bromus carinatus Joseph P. Tracy 1951-6-26 19570 Humboldt Twin Lakes vicinity, Snow Camp and Twin Lakes trip. Comment
  UCD57869  Bromus carinatus Joseph P. Tracy 1936-6-17 14946 Humboldt Buck Mountain. 792 Comment
  CAS-BOT-BC149568  Bromus carinatus var. carinatus Ashley C. Browne 1936-6-11 s.n. Humboldt Patrick's Point State Park. Comment
  UC1145157  Bromus carinatus var. carinatus Joseph P. Tracy 1949-7-19 18391 Humboldt Grouse Mountain 1524 Comment
  UC187097  Bromus carinatus var. carinatus Joseph P. Tracy 1911-6-25 3265 Humboldt Northern Coast Region, atEureka Eureka; Northern Coast Region, Eureka 0 Comment
  HSC26297  Bromus carinatus var. marginatus T. O. Osborne 1970-9-16 43 Humboldt Blank Rock, 0.25 mi. W Trinidad Light. Comment
  HSC79491  Bromus diandrus Kenneth Clark 1980-4-18 575 Humboldt 350 yds. S of Deadman's Gulch 8 Comment
  HSC104041  Bromus hordeaceus C. Reynolds 2015-4-28 39 Humboldt Along trail through Arcata Marsh, near Interpretive Center 5 Comment
  HSC26275  Bromus hordeaceus Thomas W. Nelson 1971-5-31 465 Humboldt 915 Comment
  HSC9174  Bromus hordeaceus G. B. Kendall 1965-5-8 44 Humboldt Trinidad State Park Beach. Comment
  HSC98699  Bromus hordeaceus Cara Witte 2007-5-23 98 Humboldt Near Grouse Mountain. Along Forest Service Road 4N32. Approximately 1.5 miles south of intersection with 5N04 and 4N32E. 1402 Comment
  UC1103366  Bromus hordeaceus Joseph P. Tracy 1919-5-31 5151 Humboldt near mouth of Willow Creek (Valley of Trinity River); Northern Coast Ranges 152 Comment
  UC188942  Bromus secalinus J. Burtt Davy 1899-6-20 5688 B Humboldt North Coast Ranges, Hoopa Valley Hoopa Valley; North Coast Ranges, Hoopa Valley Comment
  RSA126835  Bromus sterilis H. S. Yates 1936-5-17 5714 Humboldt Near Burr valley; South Fork Pk. 915 Comment
Read comments Apr 6 2017
  UC1103357  Bromus sterilis Joseph P. Tracy 1920-5-31 5331 Humboldt near Carlotta (along Yager Creek); Northern Coast Ranges, Yager Creek 60 Comment
  HSC54214  Bromus tectorum Griswold, Butler 1979-7-12 7264 Humboldt Near Cedar Creek, close to the town of Willow Creek 1158 Comment
  HSC70926  Bromus tectorum R. York 1980-5-18 577 Humboldt Near Black Mountain 792 Comment
  CAS-BOT-BC185520  Bromus vulgaris A. A. Heller 1923-7-10 13789 Humboldt At a state redwood camp between Scotia and Pepperwood. Comment
  UC1131315  Bromus vulgaris H. S. Yates 1936-6-23 5872 Humboldt 3 mi se of Scotia Comment
  UC1145161  Bromus vulgaris Joseph P. Tracy 1937-7-25 15540 Humboldt Trintiy Summit, head of Little Hors-Linto Creek Little Hors-Linto Creek; Trintiy Summit, Little Hors-Linto Creek 1371 Comment
  UC176583  Bromus vulgaris J. P. Tracy 1900-5-28 807 Humboldt immediate vicinity of Eureka 0 Comment
  UC161575  Cakile edentula J. P. Tracy 1901-8-7 1266 Humboldt Ocean Beach at Samoa, opposite Eureka Ocean Beach; Samoa, Ocean Beach Comment
  HSC39981  Cakile maritima Linda M. Barker 1976-4-30 1418 Humboldt 3 mi. W of Arcata Comment
  UC526774  Calamagrostis breweri Joseph P. Tracy 1932-7-14 10553 Humboldt Corral Prairie Klamath Mountains, Trinity Summit 1524 Comment
  HSC79357  Calamagrostis foliosa Kenneth Clark 1980-5-10 641 Humboldt Shelter Cove, 5' above mean high tide, E facing coastal bluff Comment
  UC1145051  Calamagrostis foliosa Joseph P. Tracy 1936-6-9 14899 Humboldt at bridge 3 mi e Petrolia (bluff bank of river); Mattole River 30 Comment
  CAS-BOT-BC185178  Calamagrostis nutkaensis Ira L. Wiggins 1932-7-25 5898 Humboldt Roadsides near McKenleyville. Comment
  HSC17625  Calandrinia ciliata Francis Winter 1960-5-7 Humboldt French Camp Ridge, 3 mi. W of Burnt Ranch 671 Comment
  JEPS42834  Callitriche heterophylla var. bolanderi W. L. Jepson 1936-8-17 17921 Humboldt 2.5 mi s Fields Landing Comment
  HSC62990  Callitriche stagnalis David Wheeler 1979-4-22 80 Humboldt Mad River Slough, 1 mi. W of intersection of Mad River Rd. and Iverson Rd. Comment
  HSC1286  Calocedrus decurrens Elrid H. Spinas 1948-5-22 39 Humboldt Horse Mtn. Comment
  RSA47116  Calocedrus decurrens Doris K. Kildale 1926-8-15 2540 Humboldt Hoopa Mt. 579 Comment
  UC54783  Calocedrus decurrens P. E. Goddard 1901-7-10 53 Humboldt Hupa Comment
  CAS-BOT-BC488452  Calochortus amabilis Elizabeth Parsons Hawver 1915-6-1 n.s. Humboldt Carlotto Comment
  HSC15406  Calochortus tolmiei J. P. Tracy, H. E. Parks 1934-6-27 7 Humboldt Grouse Mtn. 1372 Comment
  HSC71492  Calochortus tolmiei R. York 1980-5-17 521 Humboldt Near Le Perron Peak 792 Comment
  JEPS17828  Calochortus vestae Joseph P. Tracy 1918-6 4513 Humboldt Eureka Northern Coast Ranges Comment
  RSA0120938  Caltha biflora Joseph P. Tracy 1951-6-14 19408 Humboldt Snow Camp. 1402 Comment
  CAS-BOT-BC273313  Calycadenia fremontii Carl D. Duncan 1920-9-22 s.n. Humboldt Hoopa Valley Comment
  RSA47142  Calycadenia truncata subsp. scabrella Doris K. Kildale 1925-9-4 982 Humboldt Redwood Creek Comment
  HSC39966  Calypso bulbosa Linda M. Barker 1976-3-22 1347 Humboldt 3 mi. W of Arcata Comment
  RSA183504  Calypso bulbosa D. E. Anderson 1965-5-15 3683 Humboldt About 7 miles north of Hoopa on Bloody Camp Prairie Road Comment
  UC4379  Calypso bulbosa Harley P. Chandler June, 1901 1280 Humboldt North Coast Ranges, Hupa Indian Reservation Hupa Indian Reservation; North Coast Ranges, Hupa Indian Reservation 1097 Comment
  HSC16566  Calypso bulbosa J. F. Knezevich 1968-4-20 426 Humboldt E of Korbel on Bald Mtn. Comment
  HSC45315  Calypso bulbosa R. A. Vanbianchi 1972-4-14 Humboldt Tiptop Ridge, directly E of the town of Fieldbrook Comment
  UCSB29353  Calypso bulbosa var. occidentalis Phelps, M. 1972-3-19 Humboldt 1.5 mi. from Garberville; along Old Briceland Rd; 0.5 mi. north of roadside 213 Comment
  UC1198374  Calyptridium monospermum Joseph P. Tracy 1919-9-18 5223 Humboldt Trinity Summit; Northern Coast Ranges, Trinity Summit 1889 Comment
  SEINET200998  Calystegia J. P Tracy 1917-5-30 4803 Humboldt Near Little River 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
  SEINET3991735  Camassia quamash Unknown 1910-5-15 Humboldt Immediate vicinity of Eureka. 152 Comment
  HSC74419  Camassia quamash subsp. linearis Gail Newton 1980-8-10 2041 Humboldt Near Blake Mountain. 1707 Comment
  HSC40377  Camissonia strigulosa Linda M. Barker 1976-4-30 1406 Humboldt 3 mi. W of Arcata Comment
  HSC78087  Camissonia strigulosa L. P. Janeway, Amy Eisenberg 1984-4-24 745 Humboldt On N Spit of Humboldt Bay, SE side of intersection of Samoa and Fairhaven Rds. and E of the Willow patch 3 Comment
  POM232035  Campanula prenanthoides I. L. Wiggins 1930-7-22 4690 Humboldt Along bank of Redwood Creek btwn Blue Lake and Willow Creek. Comment
  RSA696536  Campanula prenanthoides J. R. Bruff 1937-8-17 941 Humboldt Richardson Grove. Comment
  JEPS11742  Campanula prenanthoides W. L. Jepson 1932-7-24 16383 Humboldt Fruitland Comment
  RSA21317  Campanula prenanthoides C. B. Wolf 1937-8-13 9215 Humboldt North coast range, 8 mi. east of Hoopa Valley on new road towards Trinity summit. 1220 Comment
  SEINET10840309  Campanula prenanthoides Lincoln Constance 1934-6-11 Constance 854 Humboldt HUMBOLDT REDWOOD PARK ABOVE RD OPP. MOUTH BULL CR., DRY S BANK ABOVE RD 250 Comment
  SEINET10939002  Campanula prenanthoides Tracy 1934-8-23 TRACY 13600 Humboldt Willow Creek Canyon 457 Comment
  SEINET10463744  Campanula scouleri Marshall 1886-1 MARSHALL s.n. Humboldt Comment
  HSC6630  Capsella bursa-pastoris J. L. Baker 1965-3-26 17 Humboldt 4 mi. N of Arcata on North Bank Rd. Comment
  HSC70563  Cardamine californica M. A. Baker 1980-7-19 3032 Humboldt Near Bret Hole. 1814 Comment
  RSA0034558  Cardamine californica var. integrifolia Victor Duran 1933-5-11 3405 Humboldt Van Duzen River, near Bridgeville. Comment
  HSC104050  Cardamine nuttallii E. R. Fyer 2015-3-19 5 Humboldt Six Rivers National Forest; along the East Fork of Willow Creek, off Hwy. 299. 505 Comment
  HSC6853  Cardaria draba J. P. Tracy 1933-5-19 12201 Humboldt Eel River, Alton to Fortuna 15 Comment
  UCD150620  Cardionema ramosissimum Linda M. Barker 1976-4-13 1386 Humboldt 3 miles west of Arcata. Comment
  CAS-BOT-BC18516  Carex abrupta Joseph Prince Tracy 1932-7-14 10546 Humboldt Trinity Summit. Corral Prairie. 1584 Comment
  HSC97229  Carex abrupta Kiera A. Freeman, Heather J. Perry 2007-6-13 10 Humboldt 1 mi. E of NF1 on FS 5N04 1585 Comment
  HSC103599  Carex angustata Thomas W. Nelson, Jane Nelson 1987-6-11 8609 Humboldt Box Spring at Box Camp; along trail to North Trinity Mountain. 1524 Comment
  SEINET10644708  Carex athrostachya Joseph P. Tracy 1934-7-18 Tracy 13426 Humboldt 1524 Comment
  UC1152067  Carex athrostachya Joseph P. Tracy 1950-7-16 18990 Humboldt Burr Valley, lower end Buck Mountain, NW slope 1066 Comment
  CDA33036  Carex barbarae F. Wetherbee 1962-5-1 Humboldt Ferndale. 0 Comment
  SEINET200965  Carex bolanderi Joseph P. Tracy 1914-7-5 4549 Humboldt Northern Coast Ranges Bald Mountain between High Prairie and Snow Camp. 1067 Comment
  CHSC82138  Carex cusickii Gordon Leppig 2001-6-16 1569 Humboldt North Coast Region; coastal wetlands. Big Lagoon County Park, Big Lagoon Bog. 3 Comment
  CAS-BOT-BC34984  Carex densa Alice Eastwood; John Thomas Howell 1937-6-22 4735 Humboldt Near Alder Point. Comment
  HSC38078  Carex densa Thomas W. Nelson, James Nelson 1976-5-30 2629 Humboldt McKeown Ranch, N of Dinsmore. Comment
  RSA296773  Carex densa Thomas W. Nelson, James Nelson 1976-5-30 2629 Humboldt McKeown Ranch north of Dinsmore. Comment
  SDSU11699  Carex deweyana subsp. leptopoda W. A. Bemis 1964-5-4 274 Humboldt Freshwater Forest, Freshwater. (SE1/4, SE1/4, Sec. 28, T6N, R1E, HBM. 98 Comment
  UC303007  Carex echinata Joseph P. Tracy 1926-6-27 7666 Humboldt Horse Mountain Northern Coast Ranges 1463 Comment
  SEINET2044705 Image available Carex echinata var. ormantha Juha Pykala, D. H. Norris 1987-6-11 1611 Humboldt North Trinity Mountian Wilderness, W of Crogan Hole. 1555 Comment
  HSC43478  Carex feta Thomas W. Nelson 1976-7-9 2999 Humboldt Along W side of ridge S of E peak of Lassic Mtn., (Signal Peak). 1524 Comment
  UC2020226  Carex gynodynama Joseph P. Tracy 1906-6-24 2508 Humboldt Northern Coast Region, south slope of Humboldt Hill. Comment
  CAS-BOT-BC22314  Carex harfordii Joseph Prince Tracy 1938-6-15 15934 Humboldt Vicinity of Carlotta. 30 Comment
  UC834  Carex harfordii Harley P. Chandler May, 1901 1115 Humboldt Humboldt Bay North Coast Ranges, Humboldt Bay 30 Comment
Read comments Sep 15 2010
  CAS-BOT-BC21755  Carex hassei Joseph Prince Tracy 1927-4-23 7917 Humboldt Big Lagoon. 6 Comment
  CHSC34064  Carex hendersonii Joseph P. Tracy 1905-6-25 2202 Humboldt Northern Coast Region of California. At Eureka. 30 Comment
  CHSC40137  Carex hendersonii Lawrence Janeway 1982-6-17 9 Humboldt Ca 300 m w of main Arcata Community Forest rd along the rd to the HSU water tank. 137 Comment
  CHSC90288  Carex hoodii Thomas W. Nelson; Jane P. Nelson 1987-6-11 8579 B Humboldt North Coast Ranges. At trail head and along trail to Grogans Hole. Comment
  UC562556  Carex integra Joseph P. Tracy 1935-7-23 14139 Humboldt Corral Prairie Trinity Summit 1584 Comment
  UC1103625  Carex lenticularis var. limnophila Joseph P. Tracy with H. E. Parks 1924-8-3 6766 Humboldt Big Lagoon Northern Coast Region 6 Comment
  HSC97361  Carex leptalea Juha Pykala, D. H. Norris 1987-6-24 1895 Humboldt Big Lagoon. 0 Comment
  SEINET7564994 Image available Carex leptalea Juha Pykala, D. H. Norris 1987-6-24 1895 Humboldt Big Lagoon, Big Lagoon fen. 0 Comment
  HSC48375  Carex leptopoda D. H. Norris May 1970 12457 Humboldt Top of ridge above Freshwater Lagoon Comment
  CAS-BOT-BC31585  Carex luzulina var. luzulina Joseph Prince Tracy 1930-7-16 8987 Humboldt South Fork Mountain, in wet meadow at McKay Camp. 1676 Comment
  CAS-BOT-BC31662  Carex lyngbyei Joseph Prince Tracy 1935-6-8 13945 Humboldt Bordering Freshwater Slough, Humboldt Bay. 6 Comment
  UC562320  Carex lyngbyei Joseph P. Tracy 1927-7-16 8262 Humboldt Eureka Northern Coast Ranges 3 Comment
  CAS-BOT-BC31823  Carex mendocinensis R. Tallent 1935-7-14 14086 Humboldt Six Rivers National Forest. Roadside of Horse Mtn. 1419 Comment
  CAS-BOT-BC32130  Carex multicaulis Joseph Prince Tracy 1933-7-11 12662 Humboldt Horse Mountain. 1432 Comment
  UC562268  Carex nervina Joseph P. Tracy 1932-7-16 10627 Humboldt near Corral Prairie; Trinity Summit 1584 Comment
  CHSC34063  Carex nudata Joseph P. Tracy 1911-6-4 3220 Humboldt Northern Coast Region. Along Little River, 5 miles from the coast. 121 Comment
  CAS-BOT-BC119388  Carex obnupta Doris K. Kildale 1926-4-4 1732 Humboldt Big Lagoon Comment
  SEINET7569441 Image available Carex obnupta L. P. Janeway 2003-7-27 7925 Humboldt Rodgers Peak 7.5' quad. North Coast, edge of marsh on south side of southwest end of Hwy 101 causeway across Big Lagoon. 2 Comment
  SEINET7569471 Image available Carex obnupta David Castaner 1989-6-19 10250 Humboldt Gold Bluff Beach, at entrance. Comment
  CAS-BOT-BC119231  Carex pachystachya Joseph Prince Tracy 1927-7-4 8233 Humboldt Iaqua 609 Comment
  UC709399  Carex pachystachya Joseph P. Tracy 1938-7-18 16083 Humboldt Eureka 30 Comment
  HSC45475  Carex pachystachya Thomas W. Nelson, Jane P. Nelson 1978-7-2 4407 Humboldt Along margin of Lost Lake 1433 Comment
  HSC45951  Carex pachystachya J. P. Smith, Steve Selva 1970-6-30 4108 Humboldt Comment
  CAS-BOT-BC119162  Carex pansa Robert F. Thorne; P. Everett 1965-8-5 35165 Humboldt Samoa Dunes. 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
  JEPS79864  Carex subfusca Joseph P. Tracy 1935-6-23 13984 Humboldt French Camp Ridge Northern Coast Ranges 1066 Comment
  CAS-BOT-BC116677  Carex subfusca Joseph Prince Tracy 1935-7-27 14296 Humboldt Open places at McKay Prairie, along creek in meadow. 1584 Comment
  UC562246  Carex tumulicola Joseph P. Tracy 1932-5-1 9853 Humboldt vicinity Garberville; Redway 121 Comment
  UC562337  Carex tumulicola Joseph P. Tracy 1930-7-10 8859 Humboldt Brannan Mountain Northern Coast Ranges 1219 Comment
  CAS-BOT-BC115573  Carex tumulicola Joseph Prince Tracy 1935-6-16 11270 Humboldt Buck Mt. Lower NW slopes on grassy hillside. 792 Comment
  HSC49014  Carex tumulicola M. A. Baker 1979-5-25 756 Humboldt Comment
  UC1103116  Carex tumulicola Joseph P. Tracy 1924-9-14 6876 1/2 Humboldt Butter Valley Northern Caost Ranges 152 Comment
  UC1152051  Carex utriculata Joseph P. Tracy 1950-7-25 19065 Humboldt near McKay Camp; South Fork Mountain 1676 Comment
  UC1103611  Carex vesicaria var. major J. P. Tracy 1901-5-12 1088 Humboldt immediate vicinity Eureka 0 Comment
  HSC7090  Carex viridula B. D. Rogers 1965-10-2 1017 Humboldt Big Lagoon 0 Comment
  CAS-BOT-BC248911  Castilleja M. S. Jussel 1931-5-2 s.n. Humboldt 6 miles from Garberville Comment
  JEPS82  Castilleja affinis subsp. affinis Lincoln Constance 1934-3-29 715 a Humboldt Upper Look Prairie South Fork Eel River, Bull Creek Region 365 Comment
  JEPS103931  Castilleja affinis subsp. litoralis T. I. and F. M. Chuang 1991-7-8 7874 Humboldt Ca 2 mi SW of Orick. Comment
  JEPS8503  Castilleja affinis subsp. litoralis Joseph P. Tracy 1923-5-19 6208 Humboldt vicinity Trinidad; Northern Coast Region 60 Comment
  BLMAR305  Castilleja ambigua subsp. humboldtiensis Jennifer Anthony-Wheeler 2002-7-1 305 Humboldt South Spit 6 Comment
  RSA132832  Castilleja applegatei subsp. pinetorum Peter H. Raven, Sidney R. Snow 1958-7-20 13636 Humboldt 2 miles south of jct. of Friday Ridge Road on Titlow Hill Road, near Grouse Mountain Comment
  UC27149  Castilleja attenuata Harley P. Chandler May 1901 1141 Humboldt Humboldt Bay; North Coast Ranges 3 Comment
  HSC95078  Castilleja exserta subsp. latifolia Andrea Pickart 2002-6-4 114 Humboldt N Spit Dunes 0 Comment
  JEPS88809  Castilleja exserta subsp. latifolia T. I. and F. M. Chuang 1991-7-9 7877 Humboldt Samoa Sand Dune; near Louisiana Pacific Plant Comment
  HSC76048  Castilleja miniata Overton, Butler 1979-8-2 12544 Humboldt Near Bret Hole, close to the town of Hoopa 1554 Comment
  CAS-BOT-BC244883  Castilleja miniata Thomas W. Nelson; Jane P. Nelson 1979-7-11 5032 Humboldt Along trail from Grogan's Hole to North Trinity Mountain from Grogan's Hole to summit Comment
  HSC44346  Castilleja pruinosa Brad Klipfel 1975-6-17 689 Humboldt Horse Mtn. Comment
  JEPS8622  Castilleja pruinosa Joseph P. Tracy 1926-6-27 7676 Humboldt Horse Mountain; Northern Coast Ranges 1432 Comment
  HSC72569  Castilleja pruinosa J. P. Smith, J. O. Sawyer 1976-5-2 8628 Humboldt S. R. 96, 4.9 mi. N of its junction with S.R. 299 122 Comment
  HSC103011  Catalpa bignonioides J. P. Smith 2014-6-6 13868 Humboldt Willow Creek. Ornamental tree 180 Comment
  UC1502115  Ceanothus R. Sutherland 1976-7-5 1 .5.7 76 Humboldt along King's Crest Trail saddle just ne Rattlesnake Ridge; Pt. Delgada Quad., just ne of Rattlesnake Ridge 1051 Comment
  UC1502126  Ceanothus R. Sutherland 1975-7-1 3 .1.7 75 Humboldt along Baker Creek; Garberville Quad., along Baker Creek 335 Comment
  HSC100905  Ceanothus Carl C. Marshall Jun 1887 462 Humboldt East branch. Comment
  HSC44451  Ceanothus arcuatus Brad Klipfel 1975-5-30 653 Humboldt Horse Mtn. Comment
  CAS-BOT-BC49314  Ceanothus cuneatus Volney Rattan 1878-1-1 s.n. Humboldt unspecified Comment
  UC18280  Ceanothus cuneatus var. cuneatus C. C. Marshall April 1888 Humboldt Hoopa Valley Comment
  HSC37596  Ceanothus foliosus var. foliosus R. Sutherland 1975-5-28 15 .28575 Humboldt 503 Comment
  HSC43194  Ceanothus incanus R. Sutherland 1975-5-13 9 .13575 Humboldt 579 Comment
  UC275284  Ceanothus incanus Joseph P. Tracy 1924-5-11 6677 Humboldt Bull Creek Northern Coast Ranges 121 Comment
  UC502945  Ceanothus incanus Joseph P. Tracy 1932-5-1 9878 Humboldt Garberville vicinity Northern Coast Ranges 121 Comment
  SEINET7720975  Ceanothus integerrimus Chesnut, Drew 1888-7-9 Humboldt Kneeland Comment
  HSC37605  Ceanothus oliganthus var. sorediatus R. Sutherland 1975-7-11 9 .11775 Humboldt Along county rd. 213 Comment
  CAS-BOT-BC51217  Ceanothus parryi M. S. Jussel 1931-5-2 s.n. Humboldt 20 miles N. of Garberville Comment
  OBI10389  Ceanothus parryi Carl B. Wolf 1941-7-27 11086 Humboldt N Coast Ranges, 5.8 mi W Maple Crk on rd to Freshwater 610 Comment
  SBBG4431  Ceanothus parryi M. Van Rensselaer 1941-4-29 1644 Humboldt Redwood Hwy near Garberville Comment
  UC1198008  Ceanothus parryi Joseph P. Tracy 1937-7-11 15416 Humboldt Garberville 152 Comment
  UC18403  Ceanothus parryi Bolander Jun 1867 6572 Humboldt Comment
  HSC18335  Ceanothus thyrsiflorus W. K. Parks Jun 1932 1357 Humboldt Trinidad Comment
  UC1193283  Ceanothus thyrsiflorus R. H. Neuns 1950-10-23 143 Humboldt on Shelter Cove Road 3 mi e Shelter Cove; Quad. 28D4, e of Shelter Cove 487 Comment
  HSC101670  Ceanothus thyrsiflorus var. thyrsiflorus J. P. Smith, J. O. Sawyer 2011-4-23 13131 Humboldt Kings Peak Road, 3.2 miles from its junction with Shelter Cove Rd Comment
  POM89164  Ceanothus velutinus Joseph P. Tracy 1919-9-24 5295 Humboldt Trinity Summit 1829 Comment
  POM299415  Ceanothus velutinus var. laevigatus S. K. Harris 1942-6-12 1257 Humboldt Fickle Hill road, 5 miles N and 2 miles E of Boynton Prairier. 630 Comment
  HSC55749  Ceanothus velutinus var. velutinus G. L. Clifton, Griswold 1979-7-26 10277 Humboldt Near Salmon Mtn., close to the town of Forks of Salmon 1935 Comment
  CAS-BOT-BC277187  Centaurea X pouzinii T. C. Fuller 1960-8-25 4975 Humboldt Pacific Lumber Co., Perrott Creek, across Eel River from Dyerville Comment
  UC8223  Cerastium arvense H. N. Bolander 1867-1 6520 Humboldt E. Fork Eel R. Comment
  UC8232  Cerastium arvense H. N. Bolander 1867-1 6520 Humboldt E. Fork Eel R. Comment
  UCD97989  Cerastium arvense subsp. strictum W. L. Jepson 1902-6-19 1883 Humboldt Harris to Ft. Seward Ranch Ridge. 1066 Comment
  CAS-BOT-BC179476  Cercis occidentalis C. B. Wolf 1931-8-31 2380 Humboldt Gravel slopes on west side of South Fork of Trinity River, 1 mile above its mouth. The Sandy Bar Swimming Hole 243 Comment
  UC902138  Cercocarpus betuloides var. betuloides Joseph P. Tracy 1946-7-7 17612 Humboldt Trinity River Valley, at Willow Creek Willow Creek; Trinity River Valley, Willow Creek 152 Comment
  UC582764  Chaenactis douglasii var. douglasii Joseph P. Tracy 1933-7-25 12877 Humboldt Grouse Mountain North Coast Ranges, Grouse Mountain 1524 Comment
  SEINET11739818  Chamaecyparis lawsoniana F. H. Utech, Sato, T.; Ohara, M. 1990-1 90 -302 Humboldt Six Rivers National Forest, 0.5 mi S of CA 199 on French Hill Rd (USFS Rd 411) 150 Comment
  SEINET5334897  Chamaecyparis lawsoniana W. D. Billings 1940-6-25 1350 Humboldt Cedar Creek, 35 miles east of Arcata Comment
  HSC55266  Chamerion angustifolium subsp. circumvagum Overton, Butler 1979-8-2 12631 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  HSC54691  Cheilanthes gracillima Overton, Butler 1979-7-26 9988 Humboldt Near Willow Creek 1341 Comment
  HSC75939  Cheilanthes gracillima Overton, Butler 1979-7-24 9702 Humboldt Near Black Rock, close to the town of Willow Creek. 1554 Comment
  HSC38999  Cheilanthes gracillima Thomas W. Nelson, Jane Nelson 1976-5-31 2660 Humboldt County line, S of meadow along 5E27 just N of its junction with 1S07 1524 Comment
  HSC99137  Cheilanthes gracillima C. Witte 2008-10-18 1062 Humboldt Horse Mountain Botanical Area. Approxmiately 1 mile north of Horse Mountain Communication Towers. Forest Service Road 6N66 1456 Comment
  UC1481862  Cheilanthes gracillima Milo S. Baker 1926-7-13 10 a-26 Humboldt 1/2 mi along Forest Rd from Hwy S Fork Mt Comment
  HSC58197  Chenopodium album G. L. Clifton, Griswold 1979-8-2 12296 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  CDA3058  Chenopodium ambrosioides B. F. Kemp 1957-11-8 511 -57 Humboldt Orrick. 0 Comment
  SEINET4558631  Chenopodium atrovirens Joseph P. Tracy 1932-1 10500 Humboldt Local along trail 1585 Comment
  RSA478469  Chenopodium botrys M. B. Dunkle 1936-8-22 4860 Humboldt Williams Grove, Eel River. 213 Comment
  RSA44459  Chenopodium multifidum H. M. Pollard 1947-8-30 s.n. Humboldt North Road along Klamath River near Redcap Creek. Orleans region. Comment
  UC198570  Chenopodium pumilio Joseph P. Tracy 1916-9-5 4770 Humboldt 4 mi above mouth; Northern Coast Ranges, South Fork of Eel River 60 Comment
  CAS-BOT-BC451381  Chimaphila menziesii L. B. Kildale 1930-8-3 10363 Humboldt Chaparel Mt. at Bug Creek 914 Comment
  RSA12553  Chimaphila menziesii C. B. Wolf 1934-7-2 5886 Humboldt Snow Camp. Mountains east of Korbel. 1372 Comment
  CAS-BOT-BC451497  Chimaphila umbellata L. B. Kildale 1931-8-9 s.n. Humboldt Three Creeks on Willow Creek Road Comment
  HSC41240  Chimaphila umbellata Brad Klipfel 1974-5-27 379 Humboldt Horse Mtn., NE face away from towers Comment
  CAS-BOT-BC451494  Chimaphila umbellata Milo S. Baker 1947-8-10 11899 Humboldt 15 mi. NE of Hoopa near end of forest road 1371 Comment
  UC404019  Chlorogalum pomeridianum var. pomeridianum P. E. Goddard 1901-7 11 Humboldt Hupa Comment
  CDA7414  Chrysanthemum segetum M. R. Pryor 1948-7-19 Humboldt Henry Perrott Ranch, Loleta. 0 Comment
  CAS-BOT-BC36487  Chrysolepis chrysophylla Carl B. Wolf 1930-10-30 1786 Humboldt Old Coast Road - at Thorn 304 Comment
  HSC98785  Chrysolepis chrysophylla var. chrysophylla Cara Witte 2007-9-14 649 Humboldt Grouse Mountain Lookout. Forest Service Road 4N70. 1649 Comment
  HSC98993  Chrysolepis chrysophylla var. minor Cara Witte 2008-7-1 786 Humboldt Near Grouse Mountain. Along Forest Service Road 4N32. Approximately .5 mile south of intersection with 5N04 and 4N32E. 1406 Comment
  UC177256  Cicendia quadrangularis Joseph P. Tracy and Ernest B. Babcock 1912-5-11 3583 Humboldt near Hydesville; Northern Coast Region 30 Comment
  UC1198646  Cicendia quadrangularis Joseph P. Tracy 1903-5-22 1887 Humboldt Alder Point Northern Coast Ranges (on Eel River) 152 Comment
  HSC30333  Cicuta douglasii Dale R. Gradek 1974-5-29 89 Humboldt SE end of Big Lagoon County Park 3 Comment
  HSC36303  Cicuta douglasii C. Cornish 1973-10-10 1 Humboldt Shore of Freshwater Lagoon Comment
  UC154050  Cicuta douglasii Joseph P. Tracy 1907-7-20 2597 Humboldt Region about Humboldt Bay, Northern Coast Region Humboldt Bay; Northern Coast Region, Humboldt Bay 0 Comment
  UC154218  Cicuta douglasii Joseph P. Tracy 1909-9-9 3090 Humboldt near Somoa (Region about Humboldt Bay, Northern Coast Region); Northern Coast Region, Humboldt Bay 0 Comment
  UC154254  Cicuta douglasii Joseph P. Tracy 1907-7-20 2597 Humboldt Region about Humboldt Bay, Northern Coast Region Humboldt Bay; Northern Coast Region, Humboldt Bay 0 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
  HSC98857  Circaea alpina subsp. pacifica Cara Witte 2008-7-30 974 Humboldt Forest Service Road 5N04. 1/4 mile east of intersection with Forest Service Road 4N70. 1583 Comment
  SEINET3403284  Cirsium arvense R. W. Spellenberg, N. Zucker 2011-7-24 14302 Humboldt 8 km north of Ferndale on Grizzly Bluff Rd. 8 Comment
  HSC40131  Cirsium arvense Thomas W. Nelson, James Nelson 1976-7-28 3082 Humboldt Between Alder Springs and road to Pine Mtn. 1524 Comment
  CDA19782  Cirsium occidentale var. candidissimum J. Dolf 2001-9-6 PDR 069832 Humboldt Northern California; Vicinity of Honeydew. 0 Comment
  UC1223055  Cirsium occidentale var. venustum Joseph P. Tracy 1948-8-8 18092 Humboldt hillside back of (Iaqua and Bridgeville) Iaqua School House Comment
  UC1223041  Cirsium remotifolium var. odontolepis Joseph P. Tracy 1949-8-11 18472 Humboldt 2 to 6 mi s from Grouse Mt. (e of headwaters of Redwood Creek, beginning where the electric power line crosses, and working south); Kinsey Ridge 1280 Comment
  UC1199223  Cirsium remotifolium var. rivulare Joseph P. Tracy 1930-7-6 8847 Humboldt Iaqua 609 Comment
  HSC5384  Cirsium vulgare J. L. Baker 1965-4-13 48 Humboldt 4 mi. N of Arcata on North Bank Rd. Comment
  CAS-BOT-BC228803  Cistanthe umbellata R. K. Gierisch; D. H. Esplin 1969-7-1 3528 Humboldt Six Rivers National Forest. Grouse Mtn. Comment
  UC183664  Clarkia amoena Joseph P. Tracy 1912-7-21 3758 Humboldt Alton Northern Coast Region 30 Comment
  CAS-BOT-BC160953  Clarkia amoena subsp. amoena Doris K. Kildale 1928-7-9 5699 Humboldt Bug Creek - Chaparral Mountain 914 Comment
  CAS-BOT-BC160968  Clarkia amoena subsp. amoena C. Hart Merriam 1922-6-1 s.n. Humboldt Fortuna Comment
  JEPS43735  Clarkia amoena subsp. amoena W. L. Jepson 1936-8-18 17940 Humboldt Wildcat Ridge Comment
  UC668237  Clarkia amoena subsp. amoena Joseph P. Tracy 1938-6-17 15957 Humboldt s of point Cape Mendocino (near ocean shore) 3 Comment
  JEPS43549  Clarkia amoena subsp. amoena W. L. Jepson 1902-8-3 2141 Humboldt near Capetwon; Bear River 182 Comment
  JEPS43688  Clarkia amoena subsp. huntiana Milo S. Baker 1923-7-20 68 Humboldt Redwood House North Coast Comment
  RSA0059979  Clarkia amoena subsp. whitneyi C. L. Hitchcock, J. S. Martin 1939-7-14 5432 Humboldt 1 mile east of Shelter Cove Comment
  CAS-BOT-BC164175  Clarkia concinna S. K. Harris; J. P. Tracy 1936-6-10 3265 Humboldt West of the South Fork of the Trinity River near its mouth 640 Comment
  HSC32855  Clarkia concinna subsp. concinna Thomas W. Nelson, James Nelson 1973-5-28 938 Humboldt McKeown Ranch N of Dinsmore Comment
  UC1198509  Clarkia concinna subsp. concinna Joseph P. Tracy 1934-7-9 13335 Humboldt ridge 5 mi s Harris 762 Comment
  UC594154  Clarkia concinna subsp. concinna S. K. Harris, J. P. Tracy 1936-6-10 3265 Humboldt near mouth South Fork Trinity River (hills w of river) 640 Comment
  CAS-BOT-BC164594  Clarkia gracilis subsp. gracilis S. K. Harris; J. P. Tracy 1936-6-10 3261 Humboldt On hills west of the South Fork of the Trinity River near its mouth 640 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
  CAS-BOT-BC172504  Clarkia purpurea subsp. quadrivulnera Doris K. Kildale 1926-6-8 2128 Humboldt Bug Creek 792 Comment
  CAS-BOT-BC172507  Clarkia purpurea subsp. quadrivulnera Doris K. Kildale 1925-6-28 804 Humboldt Kneeland Prairie, bald hills 762 Comment
  HSC16258  Clarkia purpurea subsp. quadrivulnera B. D. Rogers, William J. Ferlatte 1966-6-15 2096 Humboldt E of Bridgeville on Hwy. 36 671 Comment
  CAS-BOT-BC172388  Clarkia purpurea subsp. viminea Richard Spellenberg 1965-6-13 1109 Humboldt Along road on E side of Trinity River, about 3/4 mile S. of hwy. through Hoopa Indian Reservation Comment
  CAS-BOT-BC172391  Clarkia purpurea subsp. viminea S. K. Harris; J. P. Tracy 1936-6-10 3277 Humboldt Hills west of the South Fork of the Trinity River near its mouth 640 Comment
  HSC54010  Clarkia rhomboidea Griswold, Butler 1979-7-10 7136 Humboldt Near Board Camp Mtn., close to the town of Willow Creek. 1350 Comment
  HSC104160  Claytonia exigua subsp. exigua Andrea Pickart 2002-4-3 44 Humboldt Lanphere Dunes 25 Comment
  HSC17755  Claytonia exigua subsp. exigua D. E. Anderson 1963-5-19 2467 Humboldt About 1 mi. S of Kneeland school Comment
  HSC79323  Claytonia lanceolata D. K. Imper 1982-6-30 Humboldt 3/4 mi. N of Alder Spring near Lassics Lookout, Lassics Botanical Area, Six Rivers National Forest 1524 Comment
Read comments Sep 23 2019
  HSC70775  Claytonia parviflora subsp. parviflora R. York 1980-5-17 552 Humboldt Near Le Perron Peak 1066 Comment
  HSC99411  Claytonia rubra subsp. rubra K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-6-28 60 Humboldt Near North Trinity Mtn, 11. 9 mi east of Hoopa on Big Hill Rd (8N01), at Box Camp, Six Rivers National Forest. 1372 Comment
  CAS-BOT-BC443886  Claytonia sibirica Mrs. E. C. Van Dyke 1931-6-30 s.n. Humboldt Willow Creek Comment
  HSC17731  Claytonia sibirica William J. Ferlatte 1963-4-27 20 Humboldt Waste place, near 11th and A St., Arcata Comment
  HSC47503  Claytonia sibirica Sheila Logan 1978-4-10 30 Humboldt McKinleyville, foot of Hiller Ave. at Ocean Rd., near Pacific ocean and Mad River 46 Comment
  HSC53824  Claytonia sibirica Griswold, Butler 1979-7-10 6270 Humboldt Near Board Camp Mtn., close to the town of Willow Creek 1372 Comment
  HSC64327  Claytonia sibirica J. P. Smith 1973-5-26 6850 Humboldt Scotia Bluffs along the Eel River near Rio Dell Comment
  HSC95732  Claytonia sibirica Steven Lee 2004-4-13 17 Humboldt Arcata Community Forest, along Jolly Giant Creek Rd. Comment
  CAS-BOT-BC443899  Claytonia sibirica Joseph P. Tracy 1937-7-2 15388 Humboldt Happy Camp Mountain (In Trinity Summit Range, northeast of Hawkins Bar.) 1280 Comment
  RSA67628  Claytonia sibirica P. A. Munz 1951-7-15 16549 Humboldt 5 miles N of Willow Creek 305 Comment
  SEINET11933917  Claytonia sibirica F. H. Utech 1986-1 86 -417 Humboldt Cape Mendocino, along Pacific Ocean 5 Comment
  UC1282109  Claytonia sibirica Victor Duran 1933-5-11 3407 Humboldt 6 mi w Bridgeville; Van Duzen River Comment
  CAS-BOT-BC92598  Clematis ligusticifolia Joseph P. Tracy 1937-8-3 15608 Humboldt Along Mad River, near Blue Lake. 15 Comment
  JEPS60566  Clematis ligusticifolia Lincoln Constance 1934-6-18 898 Humboldt near S. Fork R.R. Station & P.O (border of N. Dyerville Flat); Bull Creek Region, W. Fork Eel R. Comment
  CAS-BOT-BC499343  Clintonia andrewsiana Marcus E. Jones 1924-4-28 s. n. Humboldt Scotia Comment
  HSC15444  Clintonia andrewsiana D. E. Anderson 1965-11-1 4167 Humboldt 3 mi. S of Kneeland School Comment
  HSC15451  Clintonia andrewsiana E. W. Styskel 1963-5-19 52 Humboldt 3 mi. SE of Korbel on Snow Camp Rd. 290 Comment
  UC1197663  Clintonia andrewsiana Joseph P. Tracy 1901-8-1 1238 Humboldt e of Rohnerville 152 Comment
  UC1197664  Clintonia andrewsiana Miss Edith Tracy 1898-7-1 228 Humboldt above Hydesville (Eureka, Forest Park, on the Van Duzen); Eureka, Forest Park, Van Duzen Comment
  UC14994  Clintonia andrewsiana Joseph Burtt Davy and Walter C. Blasdale 1899-6-13 5496 Humboldt between Camp Grant and Pepperwood; North Coast Ranges Comment
  HSC99448  Clintonia uniflora K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-7 98 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  UC1103460  Clintonia uniflora Joseph P. Tracy 1926-6-6 7582 Humboldt Hoopa Mountain, near summit on road w from Hoopa to Bair's Hoopa Mountain; Northern Coast Ranges, Hoopa Mountain 1066 Comment
  CAS-BOT-BC499961  Clintonia uniflora L. B. Kildale 1931-8-23 s.n. Humboldt Snow Camp 1219 Comment
  RSA46712  Collinsia grandiflora Doris K. Kildale 1926-4-25 1815 Humboldt Hoopa Mt. Comment
  UC1196749  Collinsia heterophylla Joseph P. Tracy 1948-6-13 18049 Humboldt near Harris 609 Comment
  SEINET12268979  Collinsia linearis J. P. Tracy 1950-1 18969 Humboldt Happy Camp Mountain, Trinity Summit on ridge 2 mi E of Groves Prairie 1524 Comment
  HSC45793  Collinsia parviflora J. P. Smith, J. O. Sawyer 1973-5-12 6691 Humboldt 6.1 mi. from Redwood Creek on Hoopa Rd. Comment
  HSC38493  Collinsia rattanii D. E. Anderson, J. P. Smith 1971-6-18 - 1093 Humboldt Horse Mtn. Comment
  POM193011  Collinsia sparsiflora H. E. Parks 1930-5-25 792 Humboldt Laribee Valley. 793 Comment
  UC908725  Collomia grandiflora Joseph P. Tracy 1933-7-21 12818 Humboldt on ridge s Yager Creek (10 mi e of Carlotta, edge of redwood belt); Redwood House 762 Comment
  HSC70399  Collomia heterophylla M. A. Baker 1980-6-7 1851 Humboldt Near Ammon Creek 115 Comment
  HSC44406  Collomia heterophylla R. York 1978-5-6 158 Humboldt Along Bluff Creek Rd., 4 mi. from Jct. with Hwy. 96 610 Comment
  SEINET12278705  Collomia tinctoria H. P. Chandler 1901-1 1475 Humboldt Klamath River 427 Comment
  UC1197863  Collomia tracyi Joseph P. Tracy 1932-7-13 10517 Humboldt open places at Corral Prairie Trinity Summit 1584 Comment
  UC978536  Collomia tracyi Joseph P. Tracy 1932-7-12 10468 Humboldt head of Brett Hole Trinity Summit (rocky exposed places) 1828 Comment
  CAS-BOT-BC157350  Comarum palustre Doris K. Kildale 1926-6-25 2173 Humboldt Big Lagoon Comment
  HSC6349  Convolvulus arvensis H. D. Sumner 1959-7-20 Humboldt West End Rd. along the Mad River 3 Comment
  UC127716  Conyza canadensis Harley P. Chandler May 1901 1241 Humboldt Humboldt Bay North Coast Ranges, Humboldt Bay 30 Comment
  HSC12546  Conyza canadensis C. Kline 1970-11-15 65 Humboldt Bayside Rd., .5 mi. N of Bayside Comment
  HSC45026  Conyza canadensis R. Sutherland 1976-8-19 7 .19876 Humboldt 259 Comment
  SEINET10474193  Conyza canadensis Mary Susan Taylor 1982-10-24 Taylor 5182 A Humboldt T5N R1W nw sec 15. Eureka quad. Samoa, under bridge, ca. 1 mi nw of Eureka. Sea level. Sandy soils. 0 Comment
  CHSC115028  Coptis laciniata Jessica O'Brien 2011-5-2 Humboldt S of the Van Duzen River and SW of Dinsmore. Cheers THP. 808 Comment
  HSC104326  Coptis laciniata James Regan, Humboldt Redwood Co., LLC 2009-4-1 31 Humboldt Snow Camp Rd., Bald Mtn. Creek Comment
  HSC100900  Coptis occidentalis Carl C. Marshall Apr 1887 374 Humboldt Supply Creek. 610 Comment
  HSC31444  Corallorhiza maculata D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-13 5562 Humboldt Westward lower slopes of Black Lassic near Trinity Co. line. 1585 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
  HSC99481  Corallorhiza maculata var. flavida K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-14 140 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), between Six Rivers National Forest boundary and Box Camp. 1433 Comment
  UC275531  Corallorhiza mertensiana Joseph P. Tracy 1923-6-22 6347 Humboldt Bald Mt. Northern Coast Ranges 914 Comment
  UC936241  Cordylanthus tenuis subsp. viscidus Joseph P. Tracy 1949-8-4 18411 Humboldt Mud Springs Trinity Summit 1341 Comment
  JEPS32995  Cordylanthus tenuis subsp. viscidus Freed W. Hoffman 1949-7-14 3063 Humboldt Pine Point Ridge sw Mt. Lassic Lookout; North Coast Ranges Comment
  RSA43897  Cordylanthus tenuis subsp. viscidus H. M. Pollard 1947-8-28 s.n. Humboldt Near old placer mine, north of Forest Service Station, Orleans. Comment
  SEINET8733340 Image available Cordylanthus viscidus Joseph P. Tracy 1947-1 17884 Humboldt one mile west of Mud Springs, in serpentine formation 1158 Comment
  CAS-BOT-BC101075  Coreopsis lanceolata Henry M. Pollard 1948-7-27 s.n. Humboldt Barker Ranch on Red Cap Creek, near Orleans Comment
  JEPS15874  Corethrogyne filaginifolia Joseph P. Tracy 1928-5-20 8442 Humboldt Petrolia; Mattole Valley 60 Comment
  UC1223039  Corethrogyne filaginifolia Joseph P. Tracy 1947-6-8 17705 Humboldt 5 mi e of town old Strong's District School House; Carlotta 60 Comment
  POM199566  Corethrogyne filaginifolia var. californica Jos. Burtt Davy 1899-6-30 2185 Humboldt Near Ferndale Comment
  POM356152  Corethrogyne filaginifolia var. californica E. A. Purer 1932-7-30 4675 Humboldt South of Orick Comment
  UC205461  Cornus glabrata Joseph P. Tracy 1919-5-31 5175 Humboldt at Lack Pond (Trinity R. Valley near Willow Creek); Northern Coast Ranges, Trinity R. Valley 152 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
  UC205636  Cornus nuttallii Joseph P. Tracy 1919-9-14 5213 Humboldt near its mouth Willow Creek - Northern Coast Ranges, Willow Creek (a tributary of Trinity) Comment
  UC35022  Cornus nuttallii Chesnut and Drew 1888-7-9 Humboldt Kneeland Prairie Comment
  CAS-BOT-BC212176  Cornus sericea Thomas Nelson 1977-6-3 3385 Humboldt Mad River at south end of Mad River Bridge, North Coast Range 53 Comment
  UC249598  Cornus sericea subsp. sericea Joseph P. Tracy 1921-9-4 5949 Humboldt Trinity R. Valley near Willow Creek; Northern Coast Ranges, Trinity R. Valley 152 Comment
  UC502976  Cornus sericea subsp. sericea Joseph P. Tracy 1932-7-16 10629 Humboldt near Corral Prairie (Trinity Summit); Klamath Mts., Trinity Summit 1524 Comment
  HSC70754  Cornus sessilis R. York 1980-5-17 529 Humboldt Near Le Perron Peak. 415 Comment
  JEPS50175  Cornus sessilis W. L. Jepson 1902-7-11 2014 Humboldt river bank of S. Fork Trinity R., Martin's Ranch S. Fork Trinity R., Martin's Ranch Comment
  SJSU2584  Cornus sessilis H. L. Buckalew 1962-7-2 Humboldt junction of Willow Cr & E Fork Willow Cr on Hwy 299 Comment
  HSC64124  Coronopus didymus J. P. Smith 1973-5-26 6876 Humboldt Scotia Bluffs along the Eel River near Rio Dell. Comment
  UC1222290  Corylus californica Joseph P. Tracy 1950-7-31 19226 Humboldt about 1 mi N of Friday's Camp (where road crosses side of Friday Ridge) Comment
  UC1225940  Corylus californica Joseph P. Tracy 1946-8-25 17639 Humboldt Table Bluff, N slope; along Hookton road 9 Comment
  UC176170  Corylus californica Joseph P. Tracy 1912-3-3 3560 Humboldt on West place, between Eureka and Fields Landing Northern Coast Region 0 Comment
  UC902053  Corylus californica Joseph P. Tracy 1949-8-11 18486 Humboldt 1 1/2 mi SE of Snow Camp 1341 Comment
  HSC31123  Corylus cornuta subsp. californica J. O. Sawyer 1970-6-24 2260 Humboldt S of Mill Creek Gap, FS 10N02 1433 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
  RSA33407  Corylus cornuta var. californica Doris K. Kildale 1927-3-25 3004 Humboldt Humboldt Hill Comment
  CHSC102917  Cotoneaster franchetii Peter F. Zika 2007-7-20 23323 Humboldt North Coast. Lynda Lane near high school, S end of Big Lagoon. 20 Comment
  CHSC102915  Cotoneaster lacteus Arthur Lee Jacobson 2007-8-13 Humboldt North Coast. North of Mill Creek and W of Stagecoach Road, southern part of Trinidad State Beach. 50 Comment
  CAS-BOT-BC291340  Cotula coronopifolia Mrytle Paulson 1918-4-28 s.n. Humboldt Eureka Comment
  UC1198822  Crassula aquatica Joseph P. Tracy 1914-5-14 4470 Humboldt Fort Seward Northern Coast Ranges, Fort Seward 121 Comment
  SEINET200990  Crataegus douglasii J. P. Tracy 1931-4-26 9335 Humboldt Trinity River Valley at Willow Creek 152 Comment
  HSC99461  Crataegus suksdorfii K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-7 115 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
  UC1199458  Crepis capillaris Ralph Ferguson 1948-5-4 Humboldt Parkside Tract Eureka 60 Comment
  HSC71588  Crepis pleurocarpa M. A. Baker 1980-6-26 2393 Humboldt Near Sims Creek 610 Comment
  SEINET5261839  Crocosmia X crocosmiiflora Unknown 2002-8-22 86 Humboldt On Fischer Road just N of the Mad River. Comment
  HSC58175  Cryptantha affinis G. L. Clifton, Griswold 1979-8-2 12257 Humboldt Near Oregon Creek, close to the town of Hoopa 1663 Comment
  JEPS67665  Cryptantha intermedia W. L. Jepson 1902-7-14 2025 Humboldt Hupa Valley Comment
  UC164379  Cryptantha torreyana Harley P. Chandler Jun 1901 1541 Humboldt Klamath River North Coast Ranges 304 Comment
  HSC55070  Cryptogramma acrostichoides G. L. Clifton, Griswold 1979-7-31 11650 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1719 Comment
  HSC55165  Cryptogramma acrostichoides Gilbert Muth 1979-8-1 12155 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1677 Comment
  UC54781  Cupressus lawsoniana Joseph Burtt Davy and Walter C. Blasdale 1899-5 5633 Humboldt Hoopa Mt. North Coast Ranges, Hoopa Mt. Comment
  HSC36310  Cuscuta salina Karen Burgessen 1973-5-30 Humboldt Near Humboldt Bay at oxidation ponds Comment
  JEPS93171  Cuscuta salina var. major Margriet Wetherwax and Kevin Downing 1993-8-9 2459 Humboldt on E side of Humboldt Bay, just N of Eureka; S side of Eureka Slough, near Bayside Road and Myrtle. Marsh at end of the road to church 5 Comment
  HSC66829  Cycladenia humilis M. A. Baker 1980-7-24 3197 Humboldt Near Orleans Mtn. 1625 Comment
  UCD127353  Cyclospermum leptophyllum Joseph P. Tracy 1946-6-13 17613 Humboldt 5 miles east of Carlotta. 30 Comment
  HSC45646  Cynoglossum grande Diane L. Reed 1978-5-27 135 Humboldt Horse Mtn., Titlow Hill Rd., 2.7 mi. from Hwy. 299 Comment
  HSC37257  Cynosurus echinatus Lon Hall 1975-6-19 389 Humboldt About 2 mi. N of Shelter Cove Rd. on Horse Mtn. Rd. 549 Comment
  HSC79447  Cynosurus echinatus Kenneth Clark 1980-4-18 579 Humboldt Access trail to Dead Man's Gulch, Shelter Cove. 122 Comment
  HSC9519  Cynosurus echinatus R. Spellenberg 1964-6-15 418 Humboldt 7 mi. E of Redwood Creek, Hwy. 299 Comment
  UCD60186  Cynosurus echinatus Joseph P. Tracy 1950-6-23 18865 Humboldt Dobbyn Creek, 3 miles northeast of Alderpoint. 213 Comment
  HSC79516  Cyperus eragrostis Kenneth Clark 1980-3-24 544 Humboldt Shelter Cove, N fork of Deadman's Gulch 69 Comment
  HSC102614  Cystopteris fragilis M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-28 1601 Humboldt Slopes above Bret Hole and below trail 6E18, 1.5 km SSW of Trinity Summit. 1778 Comment
  HSC74128  Cystopteris fragilis R. York 1980-5-23 621 Humboldt Near Buck Mtn. 1524 Comment
  POM208983  Cystopteris fragilis Lincoln Constance 1934-6-2 781 Humboldt The mouth of Bull Creek, Humboldt Redwood Park 46 Comment
  HSC14668  Cytisus scoparius T. W. Beck 1963-4-22 34 Humboldt Humboldt Meridian. Camp Bauer just outside the entrance, Korbel. Comment
  RSA0049663  Cytisus scoparius Dean Wm. Taylor 2011-5-4 21114 Humboldt Alderpoint Road in the vicinity of the Snowline Fox Farm (Larabee Valley quadrangle), vicinity of the road crossing of Knack Creek 341 Comment
  HSC9535  Dactylis glomerata R. H. Berg 1963-2-23 2 Humboldt Fickle Hill area, Arcata Comment
  CAS-BOT-BC189736  Danthonia californica Joseph P. Tracy 1930-6-21 8772 Humboldt Northern Coast Ranges. Larrabee Valley. 701 Comment
  HSC1967  Danthonia californica William J. Ferlatte, B. D. Rogers 1966-6-15 2108 Humboldt Larabee Valley 762 Comment
  HSC32479  Danthonia californica D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-17 5721 Humboldt McKeown Ranch, N of Dinsmore Comment
  UC1056068  Danthonia californica var. americana J. I. Mallory 1955-6-7 112 Humboldt Luke Prairie Quad 29-B-3 (n end) 350 Comment
  UCD60512  Danthonia californica var. americana A. H. Murphy 1947-6-9 s.n. Humboldt Parrott's Ranch, Table Bluff, ca. 1.5 miles north of Loleta. Comment
  UCD60692  Danthonia californica var. americana A. A. Beetle; G. L. Stebbins Jr. 1942-6-2 3474 Humboldt 4 miles north of Bridgeville. Comment
  CHSC35545  Danthonia californica var. californica James Payne Smith Jr. 1977-7-3 9231 Humboldt Road to Fish Lake (Forest Service Road 13N01), 3.5 miles from its junction with State Route 36. 487 Comment
  HSC20252  Darmera peltata Jack Rockwell 1962-4-29 59 Humboldt E bank of Redwood Creek, near Hwy. 299 549 Comment
  UC1198873  Darmera peltata Joseph P. Tracy 1932-9-18 10806 Humboldt Blue Slide Northern Coast Ranges, Van Duzen River (on the Van Duzen River) 91 Comment
  UC1198874  Darmera peltata Joseph P. Tracy 1935-9-29 14755 Humboldt Blue Slide Van Duzen River (on the Van Duzen River) 91 Comment
  RSA421918  Datura stramonium M. B. Dunkle 1936-8-22 4855 Humboldt Williams Grove, Eel River. 213 Comment
  HSC37850  Daucus pusillus Peter Sorensen 1976-6-2 Humboldt Woodley Island, Humboldt Bay Comment
  UC249612  Daucus pusillus Joseph P. Tracy 1921-7-10 5845 Humboldt near ocean Big Lagoon; Northern Coast Region, Big Lagoon 6 Comment
  CAS-BOT-BC10316  Delphinium hesperium Doris K. Kildale 1927-7-1 3620 Humboldt Alton Hill 30 Comment
  UC161541  Delphinium hesperium subsp. hesperium Joseph P. Tracy 1911-7-7 3376 Humboldt meadows on mountainside 3 mi nw junction of Willow Creek with Trinity River (near Beebe's Ranch); Northern Coast Ranges 914 Comment
  HSC48946  Delphinium nudicaule M. A. Baker 1979-5-1 700 Humboldt Along old bed of Bluff Creek Comment
  HSC89622  Delphinium nudicaule Pat Daly, Rudy Galindo 1988-3-12 5 Humboldt S Fork Trail of Trinity River, trailhead 12.4 mi. up S Fork Rd. from Hwy. 299 457 Comment
  CAS-BOT-BC121974  Delphinium trolliifolium Alice Eastwood; John Thomas Howell 1937-6-23 4770 Humboldt Near Dinsmore's Comment
  UC1334518  Delphinium trolliifolium G. A. L. Mehlquist and J. A. Jenkins 1940-5-29 9 Humboldt 1 1/2 mi n Kneeland Comment
  CAS-BOT-BC121977  Delphinium trolliifolium Albert Michael Vollmer; L. Beane 1951-6-6 106 Humboldt On road between Orick and Weitchpec Comment
  POM299320  Delphinium trolliifolium Lester Rowntree 1938-6-4 s.n. Humboldt Stone Lagoon near Orick Comment
  SD58244  Delphinium trolliifolium W. L. Jepson 1934-5-6 16681 Humboldt Little Larrabee Creek Comment
  UC1299388  Delphinium trolliifolium Freed W. Hoffman 1946-5-20 964 Humboldt hills near Capetown Comment
  CHSC31326  Deschampsia cespitosa subsp. holciformis Mark Stopher 1980-6-4 94 Humboldt Along Elk River near Hwy 101 bridge. 1 Comment
  CAS-BOT-BC192701  Deschampsia danthonioides Joseph P. Tracy 1935-6-23 13969 Humboldt French Camp Ridge 1066 Comment
  CAS-BOT-BC201772  Deschampsia elongata W. R. Dudley 1899-6-1 s.n. Humboldt Bull Creek & Eel River Comment
  HSC38624  Deschampsia elongata D. E. Anderson, J. P. Smith 1971-6-21 - 1105 Humboldt 2 mi. E of Garberville, on rd. to Alderpoint. Comment
  HSC63882  Deschampsia elongata M. A. Baker 1979-6-29 960 Humboldt Hopkins Creek 750 Comment
  JEPS75420  Deschampsia elongata W. L. Jepson 1932-7-30 16450 Humboldt Bull Creek 121 Comment
  UCD63577  Deschampsia elongata A. A. Beetle; G. L. Stebbins Jr. 1942-6-2 3621 Humboldt 4 miles north of Bridgeville. Comment
  JEPS53431  Descurainia pinnata W. L. Jepson 1902-7-16 2049 a Humboldt Trinity Summit Comment
Read comments Jan 17 2008
  UCR179275  Dicentra formosa R. G. Swinney 1968-3-28 237 Humboldt East of Humboldt State College, Arcata 152 Comment
  HSC79505  Dicentra formosa Kenneth Clark 1980-3-24 541 Humboldt Dead Man's Gulch, Shelter Cove 69 Comment
  CAS-BOT-BC402410  Dicentra formosa subsp. formosa Milo S. Baker 1923-7-15 7 Humboldt Eureka Swamp, spot near Hayes and M. Sts. Comment
  CAS-BOT-BC209193  Dichanthelium acuminatum subsp. acuminatum Joseph P. Tracy 1931-5-17 9427 Humboldt Along river, Willow Creek, Trinity River Valley. 152 Comment
  RSA10045  Dichanthelium acuminatum var. fasciculatum Joseph P. Tracy 1931-5-17 9427 Humboldt Trinity River Valley, at Willow Creek 152 Comment
  CAS-BOT-BC208955  Dichanthelium oligosanthes subsp. scribnerianum Henry M. Pollard 1946-9-1 s.n. Humboldt Near Wilson Creek, Orleans region. Comment
  CAS-BOT-BC483663  Dichelostemma capitatum R. James; M. Goering; S. Matthews 1985-4-20 040 Humboldt Burnt Ranch Campground, Shata-Trinity National Forest 432 Comment
  UC146201  Dichelostemma capitatum Joseph P. Tracy 1908-6 2773 Humboldt opposite Buck Mountain; Northen Coast Ranges, Valley of Van Duzen River 304 Comment
  UC15032  Dichelostemma capitatum J. Burtt Davy 1899-6-11 5430 Humboldt Hubbard's Station to Elk Prairie Comment
  HSC95583  Dichelostemma capitatum subsp. capitatum Andrea Pickart 2002-5-13 99 Humboldt Lamphere Dunes, Humboldt National Wildlife Refuge Comment
  UC1133927  Dichelostemma ida-maia A. E. Wieslander 1931-5-15 191 Humboldt Hoopa Indian Reservation Hoopa Quad. Comment
Read comments May 14 2010
  UC1198187  Dichelostemma ida-maia Joseph P. Tracy 1912-7-26 3860 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  CAS-BOT-BC501016  Dichelostemma ida-maia Lyman Benson 1930-7-18 2188 Humboldt West of Willow Creek, Seaward N. Coast, west of Trinity River 457 Comment
  CDA39454  Dichelostemma ida-maia G. D. Barbe, T. C. Fuller 1974-6-17 1828 Humboldt Thorne Road, 4 miles west of Redway, southern part of the county. 0 Comment
  SEINET12053109  Dichelostemma ida-maia J. P. Tracy, Murphy, A. H. 1951-1 19568 Humboldt vicinity of Twin Lakes and Snow Camp Comment
  UC1950249  Dichelostemma ida-maia Barbara Ertter with Thomas J. Delendick 1987-5-16 6918 Humboldt Vista Point just W of Berry Summit on Hwy 299, open grassy S-facing slope Comment
  UC1198174  Dichelostemma multiflorum Joseph P. Tracy 1939-4-29 16240 Humboldt mouth of Slate Creek Klamath River 121 Comment
  CDA6260  Digitalis purpurea T. C. Fuller 1958-6-17 1725 Humboldt Petrolia, Lower Mattole. 0 Comment
  JEPS11293  Digitalis purpurea W. L. Jepson 1902-6 1918 Humboldt near Eureka 12 Comment
  SD90195  Digitalis purpurea Benjamin C. Stone 1952-6-25 137 Humboldt 15 miles south of Klamath. 14 Comment
  POM89789  Digitaria sanguinalis Joseph P. Tracy 1919-9-13 5195 Humboldt Trinity River Valley. Near Willow Creek. 152 Comment
  CAS-BOT-BC150348  Diplacus aurantiacus L. R. Abrams; R. Bacigalupi 1922-6-25 8291 Humboldt North of Big Lagoon Comment
  POM277212  Disporum hookeri var. hookeri Lyman Benson 1929-7-16 1842 Humboldt Weott Ranger Station. S Fork Eel River. Comment
  RSA520552  Disporum hookeri var. hookeri Michael A. Hanson 1990-5-22 83 Humboldt Between Weitchpec and Orleans on Bluff Creek Road, 4.6 miles (7.4) west of highway 96. Comment
  HSC71215  Distichlis spicata Thomas W. Nelson, Doris K. Niles 1979-5-19 4693 Humboldt Tidal marsh at mouth of Eel River, Crab Park, N of County Park. Comment
  SEINET199554 Image available Distichlis spicata Joseph P. Tracy 1923-1 6286 Humboldt Mouth of Davis Creek. Comment
  UC1222171  Dodecatheon jeffreyi Joseph P. Tracy 1951-6-14 19406 Humboldt Snow Camp 1402 Comment
  HSC97948  Downingia elegans Cara Witte 2007-7-2 396 Humboldt Mud Lake. Off National Forest 1, near Buck Flat. 1569 Comment
  RSA23339  Downingia elegans var. corymbosa Joseph P. Tracy 1923-6-20 6339 Humboldt Miranda. 122 Comment
  UC168983  Downingia willamettensis Joseph P. Tracy 1911-6-30 3271 Humboldt near Hydesville; Northern Coast Region 60 Comment
  UC552293  Draba verna Joseph P. Tracy 1935-4-5 13772 Humboldt near Blue Lake (along Mad River); , near Blue Lake 15 Comment
  JEPS1611  Draperia systyla Joseph P. Tracy 1935-7-31 14389 Humboldt Devil's Backbone; ridge connecting Trinity Summit with Salmon Summit 1524 Comment
  UC180234  Drosera rotundifolia Joseph P. Tracy 1914-9-6 4601 Humboldt between High Prairie and Snow Camp; Northern Coast Ranges, Bald Mountain 1219 Comment
  CAS-BOT-BC401534  Drosera rotundifolia Carl B. Wolf 1927-8-1 s.n. Humboldt Marsh near Eureka Comment
  UC1198682  Drymocallis lactea var. austiniae Joseph P. Tracy 1913-6-17 4192 Humboldt near summit (Buck Mountain); Northern Coast Ranges, Buck Mountain 1524 Comment
  CAS-BOT-BC428055  Dudleya cymosa subsp. cymosa Elizabeth Parsons Hawver 1915-6-1 s.n. Humboldt Carlotta Comment
  HSC4370  Dysphania ambrosioides Jerry Parker 1968-10-26 192 Humboldt Big Lagoon, dredged sand-spit near county park. Comment
  HSC98715  Dysphania botrys Cara Witte 2007-8-1 617 Humboldt Friday Ridge Road (Forest Service Road 6N08). 1/4 mile east of intersection with Friday Camp. 1297 Comment
  UC1103652  Eleocharis acicularis Joseph P. Tracy 1936-6-28 15025 Humboldt Lake Prairie Bald Mountain 1066 Comment
  HSC98018  Eleocharis engelmannii Cara Witte 2007-7-17 534 Humboldt Intersection of 6N01B and National Forest 1. 1427 Comment
  UC1103666  Eleocharis macrostachya Joseph P. Tracy 1935-5-25 13849 Humboldt Fort Seward 106 Comment
  CAS-BOT-BC112845  Eleocharis macrostachya Malcom A. Nobs; Stanley Galen [S. Galen] Smith 1949-8-11 1346 Humboldt Marshes on eastern side of Big Lagoon. Comment
  HSC7317  Eleocharis macrostachya J. Good 1964-5-15 44 Humboldt Mad River Park, 50 yds. N of parking lot Comment
  CAS-BOT-BC112660  Eleocharis parvula Robert F. Thorne; P. Everett 1965-8-9 35342 Humboldt along Hwy 101, ca 3 mi N of Eureka along roadside. 1 Comment
  HSC69789  Elodea canadensis R. Kalal 1979-5-24 61 Humboldt Arcata, Mill Pond at end of H St. 3 Comment
  UC1137130  Elymus X macounii August L. Hormay 1932-5-12 Humboldt Bull Creek Road; near bridge Comment
  UC526781  Elymus elymoides subsp. elymoides Joseph P. Tracy 1932-7-14 10531 Humboldt Corral Prairie Klamath Mountains, Trinity Summit 1524 Comment
  UC186000  Elymus glaucus Joseph P. Tracy 1912-6-9 3659 Humboldt Alton Northern Coast Region 30 Comment
  SEINET10554247  Elymus glaucus Harold E. Parks, Joseph P. Tracy 1934-6-14 Parks 11026 Humboldt Horse Mountain. In chparral. 1372 Comment
  CAS-BOT-BC203478  Elymus glaucus subsp. glaucus L. R. Abrams 1922-6-25 8224 Humboldt 6 mi north of Garberville Comment
  RSA86744  Elymus glaucus subsp. virescens Joseph P. Tracy 1927-6-26 8213 Humboldt Stone Lagoon 6 Comment
  UC523866  Elymus multisetus Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-17 1346 Humboldt near bridge on Trinity Highway; Floodplain of Trinity River 152 Comment
  UCD62495  Elymus multisetus A. H. Murphy 1951-6-13 64 Humboldt Along Eel River at Fort Seward. Comment
  HSC8763  Elymus trachycaulus subsp. trachycaulus D. W. C. 1956-6-20 19 Humboldt May Ranch, Bridgeville. 457 Comment
  SEINET200638  Elymus virescens Joseph P. Tracy 1927-6-26 8215 Humboldt Stone Lagoon. 6 Comment
  UC1222844  Epilobium brachycarpum Joseph P. Tracy 1950-9-10 19355 Humboldt Bear River Ridge 609 Comment
  UCR179429  Epilobium brevistylum J. M. Tucker 1948-9-3 1858 Humboldt North Coast Range, Six Rivers National Forest, Clear Lake, near junction of Friday Ridge Road and Horse Mountain/Grouse Mountain Road 1494 Comment
  UC668304  Epilobium campestre Joseph P. Tracy 1938-7-5 16010 Humboldt 5 mi e Carlotta; Strong's District School House 45 Comment
  BLMAR386  Epilobium canum subsp. latifolium Jennifer Anthony-Wheeler 2004-9-1 386 Humboldt Horse Mtn, Growing along titlow hill road 18+ miles 1584 Comment
  RSA46782  Epilobium canum subsp. latifolium Doris Kildale Gillespie 1937-8-12 15255 Humboldt South Fork Mountain. Comment
  CDA38081  Epilobium ciliatum T. C. Fuller 1958-6-17 17 Humboldt Wildcat Ridge near Bunker Hill. 0 Comment
  HSC54566  Epilobium ciliatum subsp. ciliatum Overton, Butler 1979-7-24 9586 Humboldt Near Titlow Hill, close to the town of Willow Creek 1250 Comment
  JEPS39328  Epilobium ciliatum subsp. ciliatum Joseph P. Tracy 1918-7-6 5046 Humboldt near Humboldt-Mendocino County line (i.e. near Richardson Grove); Northern Coast Ranges, South Fork of Eel River 152 Comment
  RSA32869  Epilobium ciliatum subsp. ciliatum A. A. Heller 1923-7-6 13767 Humboldt Humboldt Camp 10 miles south of Dyerville. Comment
  RSA755161  Epilobium ciliatum subsp. glandulosum Robert F. Thorne, P. Everett 1965-8-9 35347 Humboldt Along Hwy 101 about 3 miles N of Eureka; 2 Comment
  UC902168  Epilobium densiflorum Joseph P. Tracy 1942-7-18 17279 Humboldt along ditch in field Garberville 152 Comment
  JEPS39329  Epilobium hallianum Joseph P. Tracy 1925-5-30 7046 Humboldt McClellan Mountain Northern Coast Ranges 822 Comment
  POM160843  Epilobium hallianum Joseph P. Tracy 1923-5-13 6204 Humboldt North Coast Ranges: Bridgeville. 229 Comment
  UC630642  Epilobium hallianum Joseph P. Tracy 1939-5-30 16302 Humboldt on river opposite Buck Mountain; Northern Coast Ranges, Van Duzen River, Dinsmore's Ranch 670 Comment
  HSC67186  Epilobium minutum Thomas W. Nelson, James Nelson 1980-6-10 5422 Humboldt Along road to Red Mtn., 0.5 mi. W of junction with Swayback Ridge Rd. 1372 Comment
  HSC76622  Epilobium minutum Denis Kearns 1981-7-22 322 Humboldt Near Whiteys Peak. 1487 Comment
  CAS-BOT-BC165947  Epilobium septentrionale J. Clausen 1932-9-18 685 Humboldt 2 miles southeast of Petrolia at the bridge across Mattolle River Comment
  RSA1439  Epilobium septentrionale E. R. Johnson 1929-08 1437 Humboldt Eel River. 91 Comment
  UC902175  Epilobium torreyi Joseph P. Tracy 1942-7-18 17280 Humboldt along ditch in field Garberville 152 Comment
  HSC39177  Epipactis gigantea D. E. Anderson, J. P. Smith 1971-6-28 1224 Humboldt Along Mad River, 2 mi. S of Blue Lake. Comment
  HSC36459  Equisetum hyemale subsp. affine John Rehling 1976-2-20 112 Humboldt Growing along the banks of the Van Dusen just W of Bridgeville Comment
  UC906713  Equisetum laevigatum Harold E. Parks and Joseph P. Tracy 1942-5-16 11563 Humboldt vicinity of Garberville 152 Comment
  CHSC26755  Equisetum telmateia subsp. braunii M. S. Taylor 1977-8-5 1430 Humboldt Around bridge over Eel River, at the turnoff from Hwy 101 to Ferndale, in Fernbridge. Comment
  HSC54581  Equisetum telmateia subsp. braunii Overton, Butler 1979-7-24 9625 Humboldt Near Titlow Hill, close to the town of Willow Cr. 1250 Comment
  HSC892  Equisetum telmateia subsp. braunii J. W. Johnson 1962-3-31 1420 Humboldt Arcata, along Lanphere lane Comment
  HSC91901  Equisetum telmateia subsp. braunii E. Mackey 1987-2-18 Humboldt Patrick's Point State Park, on trail to Wedding Rock Comment
  SEINET200658 Image available Eragrostis hypnoides Joseph P. Tracy 1931-9-7 9663 Humboldt Damp sand bar along river Trinity River Valley at Willow Creek 152 Comment
  UCD63880  Eragrostis mexicana subsp. virescens Joseph P. Tracy 1950-9-22 19372 Humboldt Klamath River, near Slate Creek. Below Orleans 8 miles. 121 Comment
  CAS-BOT-BC284097  Eragrostis pectinacea var. pectinacea Henry M. Pollard 1945-9-5 s.n. Humboldt Wilson Creek, Klamath River Canyon Comment
  HSC37908  Erechtites glomeratus Peter Sorensen 1976-6-19 Humboldt Woodley Island Comment
  SBBG29116  Erechtites glomeratus H. E. and S. T. Parks -Jul-1937 24033 Humboldt Spruce Cove, Trinidad 60 Comment
  CAS-BOT-BC291173  Erechtites glomeratus Marck Menke 1999-5-30 31 Humboldt Patrick's Point State Park, along trail near Abalone Point Comment
  RSA145330  Erica lusitanica T. C. Fuller 1961-3-22 5938 Humboldt Humboldt County: N slope Humboldt Hill Comment
  HSC22165  Ericameria greenei J. O. Sawyer 1968-9-27 730 Humboldt Near Waterdog Lakes and N Trinity Mtn. 1768 Comment
  RSA47111  Ericameria greenei Doris K. Kildale 1925-8-17 1212 Humboldt Trinity Summit 1829 Comment
  HSC56372  Erigeron aliceae Griswold, Butler 1979-7-11 6395 Humboldt Near Snow Camp Mtn., close to the town of Willow Creek. 1320 Comment
  POM174061  Erigeron biolettii Joseph P. Tracy 1918-7-6 5052 Humboldt South Fork of Eel River near the Humboldt-Mendocino County Line 152 Comment
  CAS-BOT-BC296114  Erigeron foliosus var. confinis Henry M. Pollard 1948-7-23 s.n. Humboldt Reece Point near Orleans Comment
  CDA4960  Erigeron glaucus G. D. Barbe, T. C. Fuller 1974-6-17 1834 Humboldt Lower Pacific Drive at Sail Court, west of the golf course, south of the sewer plant, Shelter Cove. 0 Comment
  CAS-BOT-BC295171  Erigeron inornatus Volney Rattan 1878-1-1 s.n. Humboldt Unspecified Comment
  HSC97452  Erigeron klamathensis Cara Witte 2007-6-7 219 Humboldt Along National Forest 1 on Kinsey Ridge. Approximately 2 miles southeast of intersection with 5N04. Near cattleguard. 1371 Comment
  CAS-BOT-BC214577  Erigeron philadelphicus Alice Eastwood 1907-4-20 30 Humboldt Trinidad, near Light-house Comment
  UC164845  Erigeron philadelphicus var. philadelphicus Joseph P. Tracy 1911-7-4 3304 Humboldt along, near its mouth Willow Creek (tributary of Trinity River); Northern Coast Ranges, Trinity River, Willow Creek 182 Comment
  SEINET11851213  Erigeron strigosus J. P. Tracy 1950-1 19046 Humboldt Trinity River, E side, 1 mi N of mouth of Willow Creek Comment
  BLMAR177  Eriodictyon californicum Donald Hazlett 1994-6-7 177 Humboldt King range, near horse Mt. Ridge rd 670 Comment
  UC24051  Eriodictyon californicum Harley P. Chandler June, 1901 1352 Humboldt Hupa Indian Reservation North Coast Ranges, , Hupa Valley (Hupa Valley) Comment
  HSC55185  Eriogonum compositum G. L. Clifton, Griswold 1979-8-2 12234 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  UC55502  Eriogonum compositum var. compositum Harley P. Chandler 1901-6-1 1462 Humboldt Klamath River North Coast Ranges, Klamath River 304 Comment
  CAS-BOT-BC259159  Eriogonum latifolium Dr. A. Kellogg; W. G. W. Harford 1868-1-1 881 Humboldt Shelter Cove Comment
  HSC39955  Eriogonum latifolium Linda M. Barker 1976-6-22 1615 Humboldt 3 mi. W of Arcata Comment
  SJSU8445  Eriogonum latifolium H. T. Harvey 1977-7-5 594 Humboldt Elk R Spit, Humboldt Bay Comment
  UCR122372  Eriogonum latifolium George K. Helmkamp, E. A. Helmkamp 2001-7-8 7016 Humboldt North Coast, Samoa Peninsula, 2.6 miles south of CA Hwy 255 bridge across Humboldt Bay 15 Comment
  CAS-BOT-BC259164  Eriogonum latifolium Joseph P. Tracy 1938-7-15 16062 Humboldt Near bay shore at Bucksport, Eureka 6 Comment
  RSA273152  Eriogonum latifolium Glenn A. Gorelick 1967-6-11 s.n. Humboldt Samoa sand dunes, near Arcata Comment
  CAS-BOT-BC259528  Eriogonum luteolum var. luteolum Henry M. Pollard 1943-8-1 s.n. Humboldt Orleans Comment
  HSC54511  Eriogonum nudum Overton, Butler 1979-7-23 9417 Humboldt Near Horse Mtn., close to the town of Willow Creek 1478 Comment
  UC1198138  Eriogonum nudum var. nudum Joseph P. Tracy 1930-6-15 8766 Humboldt Dobbyn Creek 152 Comment
  UC1198139  Eriogonum nudum var. nudum Joseph P. Tracy 1939-8-20 16430 Humboldt near Blue Lake (along Mad River); Mad River 15 Comment
  RSA18610  Eriogonum nudum var. nudum Carl B. Wolf 1937-9-8 9300 Humboldt North Coast Range, Bull Creek- Petrolia Road, 11 miles west of redwood highway. 305 Comment
  UC146155  Eriogonum nudum var. nudum Joseph P. Tracy 1908-6 2811 Humboldt opposite Buck Mountain (Valley of Van Duzen River); North Coast Ranges, Valley of Van Duzen River 304 Comment
  UC203955  Eriogonum nudum var. nudum Joseph P. Tracy 1918-7-3 4987 Humboldt Wilder Ridge Northern Coast Ranges, Kings Peak Range, Wilder Ridge 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
  CAS-BOT-BC269866  Eriogonum nudum var. pubiflorum Henry M. Pollard 1945-8-26 s.n. Humboldt Between Orleans and Camp Creek, Klamath River Canyon Comment
  RSA393303  Eriogonum nudum var. pubiflorum H. M. Pollard 1948-7-26 s.n. Humboldt Near mouth of Camp Creek near Orleans. Comment
  UC672893  Eriogonum umbellatum var. argus Joseph P. Tracy 1935-7-28 14329 Humboldt head of Devil's Hole Trinity Summit, Devil's Hole 1828 Comment
  UC55394  Eriogonum umbellatum var. dumosum P. E. Goddard 1901-7-10 55 Humboldt Hupa Comment
  HSC24386  Eriogonum umbellatum var. goodmanii J. O. Sawyer 1970-6-24 2211 Humboldt Ridge on Big Hill Rd., E of Hoopa 1189 Comment
  RSA21320  Eriogonum umbellatum var. polyanthum Carl B. Wolf 1937-8-13 9221 Humboldt North coast range, 8 mi. east of Hoopa Valley on new road towards Trinity summit. 1220 Comment
  JEPS56129  Eriogonum vimineum W. L. Jepson 1932-7-25 16395 Humboldt Old Camp Grant Eel River, Old Camp Grant Comment
  HSC5605  Eriophyllum lanatum var. achilleoides Lincoln Constance, R. C. Rollins 1942-5-12 2886 Humboldt Mouth of Bluff Creek, 6 miles NE of Weitchpec 152 Comment
  UC1223126  Eriophyllum lanatum var. achilleoides Joseph P. Tracy 1944-7-3 17480 Humboldt Willow Creek Trinity River Valley, Willow Creek 152 Comment
  UC180202  Eriophyllum lanatum var. achilleoides Joseph P. Tracy 1914-7-5 4572 Humboldt between High Prairie and Snow Camp; Northern Coast Ranges, Bald Mountain 1219 Comment
  CAS-BOT-BC301016  Eriophyllum lanatum var. achilleoides Joseph P. Tracy 1936-6-10 14929 Humboldt South Fork of Trinity River: mountain slopes west of its mouth 457 Comment
  UCR51798  Eriophyllum lanatum var. aphanactis Thomas W. Nelson, Jane P. Nelson 1977-7-1 3579 Humboldt Head of North Fork of Conley Creek, W side of road N from Alder Spring. 525 Comment
  POM358028  Eriophyllum lanatum var. aphanactis Thomas W. Nelson, Jane P. Nelson 1977-7-1 3579 Humboldt Head of North Fork of Conley Creek, W side of road N from Alder Spring. 1463 Comment
  CAS-BOT-BC301182  Eriophyllum lanatum var. arachnoideum Mrytle Paulson 1918-4-28 s.n. Humboldt Eureka Comment
  HSC31217  Eriophyllum lanatum var. grandiflorum D. E. Anderson 1972-6-20 5738 Humboldt Along the Redwood Valley-Hoopa Rd., E of the summit. Comment
  UC129580  Eriophyllum lanatum var. grandiflorum Mrs. M. H. Manning 1901-6-7 Humboldt near Hupa Comment
  HSC5585  Eriophyllum lanatum var. lanceolatum Lincoln Constance, R. C. Rollins 1942-5-12 2890 Humboldt Klamath River, 12 mi. N of Weitchpec 122 Comment
  HSC68953  Eriophyllum lanatum var. lanceolatum Jacqueline Greenleaf 1980-7-16 241 Humboldt Near Buck Mountain. 1250 Comment
  UC180182  Erodium botrys Joseph P. Tracy 1914-5-14 4462 Humboldt Fort Seward Northern Coast Ranges 121 Comment
  HSC82395  Erysimum capitatum Thomas W. Nelson 1979-7-11 5008 Humboldt N Trinity Mtn. and ridge to E. 1829 Comment
  HSC60055  Erysimum capitatum var. capitatum M. A. Baker 1978-5-6 493 Humboldt 2 km. W of Weitchpec along Klamath River. Comment
  HSC67181  Erysimum capitatum var. capitatum Thomas W. Nelson, James Nelson 1980-6-10 5433 Humboldt Along E side of Red Mtn. 1372 Comment
  HSC6788  Erysimum menziesii D. E. Anderson 1962-3-25 1949 Humboldt 0.5 mi. N of Fairhaven. Comment
  CAS-BOT-BC383042  Erythranthe grandis David B. Lowry 2005-5-14 BSR Humboldt Along Blue Slide Road, just north of the intersection with Bluff road 17 Comment
  CAS-BOT-BC383051  Erythranthe guttata David B. Lowry 2005-5-16 PCK Humboldt Along Kneeland road, east of Slater Road 709 Comment
  SEINET14045671 Image available Erythranthe nasuta Joseph P. Tracy 1914-1 4457 Humboldt Plants of Northern Coast Ranges of California; Fort Seward. 122 Comment
  HSC71161  Erythronium californicum Thomas W. Nelson 1977-6-15 3421 Humboldt Along USFS rd connecting FS 6N01 to 5N10, just N of Clear Lake 1372 Comment
  HSC38788  Erythronium grandiflorum subsp. grandiflorum J. P. Smith 1976-5-30 8825 Humboldt Near Black Rock on road to Clear Lake 1524 Comment
  RSA46693  Erythronium grandiflorum subsp. grandiflorum Doris K. Kildale 1938-6-5 15392 Humboldt Horse Mountain Comment
  HSC79053  Erythronium grandiflorum subsp. grandiflorum D. K. Imper 1984-5-16 Humboldt 0.25 mi. E of 6N01 where it junctions with 6N08 1524 Comment
  HSC104347  Erythronium revolutum James Regan, Humboldt Redwood Co., LLC 2007-5-7 20 Humboldt Kneeland 854 Comment
  UC184948  Eschscholzia californica Joseph P. Tracy 1912-7-21 3765 Humboldt Alton Northern Coast Region 30 Comment
  HSC46009  Eschscholzia californica Catherine Chin 1978-9-8 113 Humboldt Arcata, A and 11th St. Comment
  SEINET3121248 Image available Eucephalus glabratus Joseph P. Tracy 1919-1 5304 Humboldt Along road between Three Creeks and mouth of Willow Creek 914 Comment
  UC1199348  Euchiton gymnocephalus Joseph P. Tracy 1936-8-24 15175 Humboldt 6 mi se Arcata; Fickle Hill 609 Comment
  CAS-BOT-BC206803  Euonymus occidentalis Doris K. Kildale 1926-7-22 2417 Humboldt N ridge near Metropolitan, near Canyon Park, Eel River Valley Comment
  BLMAR291  Euonymus occidentalis var. occidentalis Jennifer Anthony-Wheeler 2001-6-19 291 Humboldt Headwaters Forest Reserve, growing shaded streambank by ' babbits ridge ' 335 Comment
  UC165805  Euonymus occidentalis var. occidentalis Joseph P. Tracy 1908-6 2866 Humboldt opposite Buck Mt.; Northern Coast Ranges, Van Duzen R. Valley 762 Comment
  UC275491  Euonymus occidentalis var. occidentalis H. E. Parks and Joseph P. Tracy 1925-6-14 7123 Humboldt along streams on Kneeland Prairie rd. Northern Coast Ranges, Kneeland Prairie rd. 457 Comment
  UC1198984  Euphorbia crenulata Joseph P. Tracy 1926-4-11 7409 Humboldt Bridgeville; Northern Coast Ranges 228 Comment
  UC502958  Euphorbia crenulata Joseph P. Tracy 1929-4-14 8540 Humboldt Phillipsville Northern Coast Ranges (slopes and groves facing South Fork of Eel River) 121 Comment
  HSC97316  Euphorbia oblongata M. Mesler 2007-6-9 761 Humboldt Titlow Hill Rd. 1067 Comment
  UC302052  Euphorbia peplus Joseph P. Tracy 1926-5-15 7473 Humboldt Eureka; North Coast Ranges 0 Comment
  UC1198977  Euphorbia spathulata Joseph P. Tracy 1930-6-15 8761 Humboldt Dobbyn Creek 152 Comment
  UC902141  Euphorbia spathulata Joseph P. Tracy 1948-6-20 18068 Humboldt Willow Creek; Trinity River Valley 152 Comment
  RSA44303  Euthamia occidentalis H. M. Pollard 1946-9-1 s.n. Humboldt Near Wilson Creek, Orleans region Comment
  SEINET3244015  Euthamia occidentalis S. K. Harris, Charlotte Wilder 1938-1 879 Humboldt Bars of the Van Dusen River, above Blue Slide. Comment
  HSC17559  Fallopia sachalinensis H. E. Parks, S. T. Parks Jul 1952 24448 Humboldt South of the Elk River Bridge on Hwy 10 Comment
  UCD65901  Festuca californica subsp. californica Joseph P. Tracy 1938-6-13 15903 Humboldt Horse Mountain. 1432 Comment
  UCD65870  Festuca californica subsp. californica P. B. Kennedy 1923-8-2 Humboldt Near grade Bluff Creek to Arcata. Comment
  UC187110  Festuca elmeri Joseph P. Tracy 1908-6 2741 Humboldt opposite Buck Mountain; Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  POM112463  Festuca idahoensis H. P. Chandler 1901-06 1366 Humboldt Hupa Indian Reservation. 152 Comment
  UC188916  Festuca idahoensis Jos. Burtt Davy 1899-6-9 5377 Humboldt near Harris Comment
  UC1103722  Festuca occidentalis Joseph P. Tracy 1934-7-18 13422 Humboldt Grouse Mountain North Coast Ranges 1524 Comment
  CAS-BOT-BC278969  Festuca rubra W. R. Dudley 1899-6-1 s.n. Humboldt Eureka Penninsula [Peninsula] Comment
  HSC65121  Festuca rubra J. P. Smith 1973-5-26 6880 Humboldt Scotia Bluffs along the Eel River near Rio Dell. Comment
  HSC9976  Festuca rubra J. A. Waller 1965-5-21 26 Humboldt Near Big Lagoon Comment
  UC525639  Festuca rubra Joseph P. Tracy 1927-7-4 8238 Humboldt Lone Star Creek North Coast Ranges, Iaqua District 609 Comment
  UC682048  Festuca subuliflora G. L. Stebbins Jr. and G. L. Church 1941-5-27 3109 Humboldt Strong's Station, on Van Duzen River Van Duzen River Comment
  UC1152012  Festuca subuliflora A. H. Murphy 1951-5-15 31 Humboldt 0.5 mi s McCann (on Fruitland Road) Comment
  RSA168825  Filago gallica Joseph P. Tracy 1942-5-16 17338 Humboldt On river bar, Eel River, vicinity of Garberville Comment
  UC1197363  Foeniculum vulgare Joseph P. Tracy 1930-10-12 9216 Humboldt Eel R. Alton to Fortuna; Eel R. 15 Comment
  HSC18618  Fragaria X ananassa C. O. Baker 1962-3-22 7 Humboldt 2 mi. S of Trinidad along old Hwy. 101 183 Comment
  CHSC19732  Fragaria chiloensis D. J. Jager 1965-5-12 66 Humboldt Ca. 1/2 mi. north of Trinidad on bluff above ocean. 45 Comment
  CHSC32839  Fragaria chiloensis Lora Anderson 1981-4-26 7 Humboldt Ca. 5 m n on Clam Beach Rd. 0.5 km e of Hwy. 101. 9.5 mi n of Arcata, along roadsides. 0 Comment
  HSC33746  Fragaria chiloensis A. Montalvo 1975-5-24 285 Humboldt Samoa Dunes off Samoa Blvd., across from the boat landing Comment
  UC1198725  Fragaria chiloensis Joseph P. Tracy 1918-4-21 4875 Humboldt Dows Prairie Northern Coast Ranges 60 Comment
  HSC79429  Fragaria vesca Kenneth Clark 1980-3-23 532 Humboldt South fork of Dead Man's Gulch 76 Comment
  HSC27127  Frangula californica J. P. Smith, J. O. Sawyer 1973-2-10 5841 Humboldt 2.7 mi. W of Hwy. 96 on Brannan Mtn. Road, N of Willow Creek 366 Comment
  CAS-BOT-BC52741  Frangula californica subsp. californica Doris K. Kildale 1926-6-13 2162 Humboldt Briceland Bridge 1/2 west of Garberville. 114 Comment
  CAS-BOT-BC217693  Fraxinus latifolia M. S. Jussel 1931-5-1 s.n. Humboldt Sylvandale, 8 mi. N of Garberville Comment
  NY42920  Fraxinus latifolia J. B. Walker 1995-4-26 1387 Humboldt Six Rivers National Forest, Hwy 36, 2km W of Cobbs 800 Comment
  UC1541354  Fritillaria W. K. Parks July 1933 1399 Humboldt South Fork Mountain Comment
  CAS-BOT-BC136032  Fritillaria affinis John Thomas Howell 1954-4-25 29154 Humboldt Dune hills, Little River Comment
  HSC22059  Fritillaria affinis Joel W. Reinhard 1966-5-6 31 Humboldt Two beaches N of College Cove Comment
  SEINET200745  Fritillaria lanceolata Joseph P. Tracy 1940-5-17 16549 Humboldt McClellan Mountain. 762 Comment
  UC667119  Fritillaria purdyi Joseph P. Tracy 1938-6-13 15925 Humboldt Horse Mt. 1432 Comment
  HSC100211  Fuchsia magellanica J. P. Smith 2009-7-28 12641 Humboldt Arcata; Along St. Louis Road. 16 Comment
  HSC32861  Galium aparine Thomas W. Nelson, James Nelson 1973-5-28 940 Humboldt McKeown Ranch N of Dinsmore Comment
  JEPS25701  Galium bolanderi P. C. Hutchison 1961-5-22 2031 Humboldt high bluffs along road ca. 5.4 mi n Orleans (on US hwy 299, e side of river); Klamath River Comment
  POM338118  Galium californicum F. R. Fosberg 1948-8-28 30044 Humboldt Between Benbow and Garberville. Comment
  HSC63804  Galium muricatum M. A. Baker 1979-5-23 756 Humboldt Comment
  UC1196118  Galium muricatum Joseph P. Tracy 1940-8-25 16709 Humboldt near High Prairie; Bald Mountain 1066 Comment
  UC1225912  Galium muricatum Joseph P. Tracy 1943-7-18 17429 Humboldt along Trinity Hwy Willow Creek Canyon 487 Comment
  UC76673  Galium trifidum var. pacificum Chesnut and Drew 1888-7-8 Humboldt Kneeland Prairie Comment
  CAS-BOT-BC303396  Gamochaeta ustulata M. S. Jussel 1931-5-2 s.n. Humboldt Near Garberville Comment
  HSC5689  Gamochaeta ustulata David Adams 1960-7-15 Humboldt Near Fort Humboldt monument, Eureka 15 Comment
  CAS-BOT-BC188530  Garrya elliptica Milo S. Baker 1927-8-16 2442 a Humboldt Samoa Comment
  HSC8392  Garrya fremontii C. B. Wolf 1930-10-24 1762 Humboldt Along Klamath River 1.0mi above mouth of Slate Creek 244 Comment
  HSC8400  Garrya fremontii D. E. Anderson 1965-4-24 3537 Humboldt Along Titlow Hill Rd. 2 mi. from its junction with Hwy. 299 Comment
  OBI14160  Garrya fremontii Joseph P. Tracy 1939-1-14 16184 b Humboldt Trinity River Valley, at Willow crk Comment
  OBI35859  Garrya fremontii David J. Keil 1983-7-2 17336 Humboldt Horse Mtn Summit SW of Willow Crk Comment
  RSA129632  Gastridium phleoides H. S. Yates 1936-6-23 5877 Humboldt 4 miles NNE of Cathay Peak. Comment
  HSC59858  Gaultheria ovatifolia M. A. Baker 1979-7-6 1011 Humboldt .6 k W of FS rd. 15N01 on rd. 12N16, toward Bald Mtn. Comment
  HSC22502  Gaultheria shallon H. S. Logsdon 1964-5-13 40 Humboldt 4.0 mi. NE of Orick at Boye's Prairie, E side of Hwy. 101 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
  HSC55274  Gayophytum diffusum subsp. parviflorum Overton, Butler 1979-8-2 12663 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  CHSC19518  Genista monspessulana A. D. Sajecki 1967-7-21 9 Humboldt Luarel Drive three blocks south of H.S.C. Library. 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
  UC154164  Gentiana affinis var. ovata Joseph Burtt Davy and Walter C. Blasdale 1899-7-30 6199 Humboldt near Ferndale; Russ Ranch Comment
  UC1198641  Gentianopsis simplex Doris Kildale Aug. 1925 Humboldt Trinity Summit Comment
  UC213322  Gentianopsis simplex Joseph P. Tracy 1919-9-22 5275 Humboldt Trinity Summit Northern Coast Ranges, Trinity Summit 1828 Comment
  CDA43207  Geranium molle Richard R. Halse 2015-3-26 9382 Humboldt Eureka; by a Texaco station near 3543 Broadway St. ((U.S. Highway 101) and its intersection with McCullens Ave. Comment
  UC164808  Geranium oreganum Joseph P. Tracy 1911-7-4 3287 Humboldt near Willow Creek (w side of Trinity River); Northern Coast Ranges, Trinity River 243 Comment
  HSC12713  Geranium retrorsum M. J. Athey 1970-11-15 2 Humboldt In front of house in Westhaven, along Havenway, Trinidad Comment
  HSC45985  Gilia capitata J. P. Smith, Steve Selva 1970-6-14 3842 Humboldt Along Hwy. 96 at Whitmore Creek 152 Comment
  RSA23650  Gilia capitata subsp. pacifica C. B. Wolf 1939-7-8 9519 Humboldt Devil's Gate, south of Cape Mendocino. 8 Comment
  HSC100593  Gilia inconspicua Carl C. Marshall 1885-5-11 36 Humboldt Peninsula near Fairhaven. Comment
  CHSC68788  Gilia millefoliata Vernon Oswald 1997-6-5 8543 Humboldt North Spit of Humboldt Bay 3.7 mi south of Hwy. 255, Orvil Wilson Memorial Off-road Vehicle Park opposite the junction of New Navy Base Rd. and Lincoln Ave. 6 Comment
  SEINET6996156  Githopsis specularioides Wanda P. Vestal, A. G. Vestal 1937-6-22 s.n. Humboldt Kneeland prairie near serpentine outcrops, about 4 miles southeast of Kneeland. Comment
  CAS-BOT-BC218429  Glehnia littoralis subsp. leiocarpa A. A. Heller 1924-7-24 13882 Humboldt Dunes at Humboldt County camp 7 miles south of Trinidad Comment
  UC140694  Glehnia littoralis subsp. leiocarpa unknown 1904-8-23 Humboldt peninsula - Eureka Eureka Comment
Read comments Feb 1 2013
  HSC10000  Glyceria borealis D. J. Wilder 1965-4-28 21 Humboldt 1/2 mi. W of Arcata on Samoa Rd. Comment
  HSC90679  Glyceria declinata Gail Newton 1982-6-10 3591 Humboldt Elk River Wildlife Area, Eureka Comment
  HSC10063  Glyceria elata D. E. Anderson 1965-9-5 4092 Humboldt Along Mad River, 3 mi. S of Blue Lake Comment
  HSC58542  Glyceria elata Overton, Butler 1979-7-23 9545 Humboldt Near Titlow Hill, close to the town of Willow Creek. 1280 Comment
  HSC98589  Glyceria elata Cara Witte 2008-7-16 904 Humboldt Board Camp Mountain. Forest Service Road 4N38. 1/2 mile S of intersection with National Forest 1. 1409 Comment
  HSC10079  Glyceria fluitans J. P. Tracy 1933-7-20 19801 Humboldt Arcata bottom 15 Comment
  UCD66780  Glyceria occidentalis August L. Hormay 1932-5-11 Humboldt Eureka, Arcata Swamp. Comment
  HSC98751  Glyceria striata Cara Witte 2007-7-11 499 Humboldt Grouse Mountain. Forest Service Road 5N04. Near spring. 1583 Comment
  UC1103750  Glyceria striata Joseph P. Tracy 1934-7-18 13430 Humboldt Grouse Mountain; North Coast Ranges 1524 Comment
  UC195428  Glycyrrhiza lepidota Joseph P. Tracy 1915-9-12 4668 Humboldt Laribee Creek Northern Coast Ranges, Eel River (mouth, fields along river) 30 Comment
  HSC56965  Gnaphalium palustre Overton, Butler 1979-7-23 9488 Humboldt Near Titlow Hill, close to the town of Willow Creek. 1280 Comment
  HSC5713  Gnaphalium palustre H. E. Parks, S. T. Parks Aug 1937 24080 Humboldt Trinidad; Spruce Cove Comment
  HSC5711  Gnaphalium palustre Jerry Parker 1968-9-24 74 Humboldt Mckinleyville beach Comment
  UCR48596  Gnaphalium ramosissimum R. D. Goeden, Don W. Ricker 1987-9-2 870902- 8 Humboldt Loleta, along Cannibal Road 8 Comment
  SEINET8726298 Image available Godetia amoena S. K. Harris 1936-1 s.n. Humboldt On south side of Domingo Gulch on road from Petrolia to Cape Mendocino, 30 Comment
  HSC38741  Goodyera oblongifolia J. D. Ackerman 1975-5-3 441 Humboldt Hwy. 299, 200 yds. E of Lord Ellis Summit, W of Blue Lake and Redwood Creek Comment
  HSC55216  Goodyera oblongifolia Walter Overton 1979-8-1 12373 Humboldt Near Mill Creek, Middle Fork, close to the town of Hoopa. 1341 Comment
  UC14960  Goodyera oblongifolia Harley P. Chandler June, 1901 1397 A Humboldt North Coast Ranges, Hupa Indian Reservation Hupa Indian Reservation; North Coast Ranges, Hupa Indian Reservation 152 Comment
  UCD132548  Grindelia camporum Malcolm A. Nobs; S. Galen Smith 1949-8-3 1179 Humboldt Around Fields Landing. Comment
  CAS-BOT-BC304742  Grindelia hirsutula John Thomas Howell 1937-7-31 13720 Humboldt Salt marsh bordering Humboldt Bay at Arcata Comment
  CAS-BOT-BC304751  Grindelia hirsutula Edward Lee 1934-8-17 1148 Humboldt East shore of Big Lagoon, 35 miles north of Eureka 3 Comment
  HSC35626  Grindelia hirsutula Thomas W. Nelson, James Nelson 1975-8-5 2139 Humboldt Along south spit of Humboldt Bay ca. 1 mile N. of Table Bluff Comment
  HSC5720  Grindelia hirsutula J. F. Knezevich 1968-5-14 437 Humboldt 13 mi. S of Ferndale at Cape Mendocino 0 Comment
  UC1196597  Grindelia hirsutula Joseph P. Tracy 1921-7-10 5856 Humboldt Big Lagoon Northern Coast Region, Big Lagoon 6 Comment
  UC1199435  Grindelia hirsutula Joseph P. Tracy 1938-6-17 15955 Humboldt s point of Cape Mendocino Cape Mendocino (in exposed situations near ocean shore) 3 Comment
  UC1525546  Grindelia hirsutula John L. Strother 1986-10-12 1355 Humboldt on Samoa Blvd. (rte 255) w of Arcata (nw side of Arcata Bay (Humboldt Bay) opposite Emmerson Div., Sierra Pacific Inc., roadside above saltmarsh); Humboldt Bay, Arcata Bay Comment
  UC1552453  Grindelia hirsutula R. D. Goeden 1987-9-2 21 Humboldt on bank above Mattole Road; Cape Mendocino (Cape Ridge) 182 Comment
  HSC100434  Grindelia robusta Carl C. Marshall Sep 1886 253 Humboldt Marshes. Comment
  HSC57650  Hackelia micrantha G. L. Clifton, Griswold 1979-7-25 10820 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1814 Comment
  HSC74473  Hackelia micrantha Gail Newton 1980-7-23 1744 Humboldt Near Packsaddle Ridge 1463 Comment
  CAS-BOT-BC508211  Hastingsia alba Joseph P. Tracy 1935-7-24 14195 Humboldt Trinity Summit, moist rocky exposed places near ranger station 1828 Comment
  RSA12428  Helenium bigelovii C. B. Wolf 1934-7-2 5866 Humboldt At small lake at Snow Camp (Mtns E of Korbel) 1372 Comment
  SD128471  Helenium bigelovii L. E. Urbatsch, Patricia B. Cox and Alan W. Lievens 1988-8-17 6103 Humboldt Road to Denny from California 299; 1.7 miles to left fork; 6.7 miles to right fork, 7NO4; collection site 6.4 miles. Comment
  SEINET11848908  Helenium bigelovii J. P. Tracy 1949-1 18462 Humboldt Snow Camp 1402 Comment
  CAS-BOT-BC306866  Helenium bolanderi Doris K. Kildale 1929-7-10 8398 Humboldt Big Lagoon Comment
  JEPS109581  Helenium bolanderi Dean W. Taylor 2002-9-12 18341 Humboldt Lake Prairie, remnant of the original bog vegetation on the eastern end of the lake 1097 Comment
  CAS-BOT-BC309417  Helenium puberulum Doris K. Kildale 1926-6-26 2168 Humboldt Monument Creek - near Scotia Comment
  RSA1499  Helenium puberulum E. R. Johnson 1929-08 1431 Humboldt Along the Redwood Hwy, S of Eureka. 30 Comment
  HSC38797  Hemitomes congestum R. York 1976-7-15 1 Humboldt Patrick's Point State Park. Comment
  RSA255769  Hemitomes congestum Gary D. Wallace 1973-7-11 1252 Humboldt Prairie Creek Redwoods St. Pk. north of Orick. SE of the residences across the road from park hdqrs. just in the treeline. Comment
  CAS-BOT-BC310078  Hemizonella minima Doris Kildale 1931-5-10 10549 Humboldt Snow Camp Comment
  HSC40554  Hemizonella minima Thomas W. Nelson, Jane P. Nelson 1976-5-23 2520 Humboldt SW facing slopes 1666 Comment
  UC1565811  Hemizonella minima R. Spellenberg 1990-7-9 10228 Humboldt on USFS Rd 1 20.5 mi s Calif. Hwy. 299 and Berry Summit (14 air mi sw of Burnt Ranch, extreme e edge of county); Pilot Ridge 1371 Comment
  CAS-BOT-BC306080  Hemizonia congesta subsp. clevelandii H. E. Parks; J. P. Tracy 1930-5-25 0880 Humboldt Near Bridgeville Comment
  CAS-BOT-BC306183  Hemizonia congesta subsp. congesta J. Clausen 1932-9-18 679 Humboldt 4 miles southwest of Capetown on the road to Petrolia 213 Comment
  HSC1805  Hemizonia congesta subsp. tracyi William J. Ferlatte, B. D. Rogers 1966-6-15 2091 Humboldt Near Bridgeville Comment
  POM360349  Hemizonia congesta subsp. tracyi S. K. Harris 1936-6-20 699 Humboldt Above Van Duzen River about 1 mile west of Bridgeville Comment
  UC205207  Hemizonia congesta subsp. tracyi Joseph P. Tracy 1920-8-1 5348 Humboldt Kneeland Prairie 762 Comment
  UC1223121  Hesperevax acaulis var. robustior Joseph P. Tracy 1949-6-12 18312 Humboldt Trinity River Valley at Willow Creek; Trinity River Valley 152 Comment
  UC165831  Hesperevax sparsiflora var. brevifolia Joseph P. Tracy 1905-4-30 2173 Humboldt Humboldt Bay Comment
  UC1212225  Hesperolinon adenophyllum Joseph P. Tracy 1946-8-25 17646 Humboldt Alton to Fortuna (on gravel bars); Eel River 15 Comment
  UC1198757  Heteromeles arbutifolia Joseph T. Gregory 1935-12-21 Humboldt 4 mi n Willow Creek (Trinity River bluffs, at the Meitz Place); Trinity River 121 Comment
  UC581759  Heterotheca oregona var. oregona Joseph P. Tracy 1933-10-15 13097 Humboldt Miranda, along South Fork of Eel River South Fork of Eel River 121 Comment
  HSC44341  Heuchera micrantha Brad Klipfel 1975-6-17 680 Humboldt Horse Mtn. Comment
  UC902003  Heuchera micrantha Joseph P. Tracy 1947-4-27 17673 Humboldt roadside near top of Wolverton Gulch (1/2 mi w of tow) 152 Comment
  UC1223082  Hieracium albiflorum Joseph P. Tracy 1947-7-9 17850 Humboldt Horse Mountain 1432 Comment
  UCD133133  Hieracium albiflorum Linda M. Barker 1976-6-14 1591 Humboldt 3 miles west of Arcata. Comment
  HSC56365  Hieracium greenei Griswold, Butler 1979-7-10 6205 Humboldt Near Kinsey Ridge, close to the town of Willow Creek 1244 Comment
  HSC57940  Hieracium greenei G. L. Clifton, Griswold 1979-7-31 11607 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1719 Comment
  CAS-BOT-BC316004  Hieracium nudicaule Joseph P. Tracy 1932-7-17 10659 Humboldt Corral Prairie, Trinity Summit 1584 Comment
  UC582422  Hieracium nudicaule Joseph P. Tracy Jul 16 1930-Jul 19 1930 9041 Humboldt near Blake lookout; Northern Coast Ranges, South Fork Mountain 1737 Comment
  UC1103738  Hierochloe occidentalis Joseph P. Tracy 1942-5-16 17348 Humboldt Garberville 152 Comment
  UC187263  Hierochloe occidentalis J. P. Tracy 1901-8-1 1237 Humboldt woods near Rohnerville 91 Comment
  HSC13454  Hippuris vulgaris D. E. Anderson 1965-10-25 4161 Humboldt Georgia-Pacific Co., N Big Lagoon Comment
  HSC10134  Holcus lanatus R. D. Zortman 1963-4-14 27 Humboldt 5.0 mi. NE of Arcata, off Warren Creek Road. 91 Comment
  HSC27046  Holcus lanatus Brad W. Klipfel 1973-8-24 284 Humboldt Near Hwy. 101 Comment
  UCD84835  Holcus lanatus Linda M. Barker 1976-6-22 1614 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  UCD84909  Holcus lanatus J. I. Mallory 1955-7-22 117 Humboldt Peavine Ridge, 1 mile north of Luke Prairie. 701 Comment
  HSC45632  Holodiscus discolor Diane L. Reed 1978-4-22 10 Humboldt Tish Tang Campground, 5 mi. N of Willow Creek on Hwy. 96 Comment
  HSC58138  Holodiscus discolor Gilbert Muth 1979-8-1 12156 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1677 Comment
  HSC97986  Holodiscus discolor Cara Witte 2007-7-8 429 Humboldt Board Camp Mountain. Pack trail 4E26. 1463 Comment
  UC466572  Holodiscus discolor Mrs. M. H. Manning 1901-6-7 59 Humboldt Hupa Comment
  UC1103486  Hordeum brachyantherum subsp. brachyantherum Joseph P. Tracy 1943-7-18 17439 Humboldt Big Lagoon 6 Comment
  HSC10176  Hordeum marinum subsp. gussoneanum J. A. Waller 1965-4-19 15 Humboldt Kneeland area. Comment
  HSC10204  Hordeum murinum subsp. leporinum R. D. Modafferi 1965-5-13 100 Humboldt Intersection of Main St. and old Hwy. 101, S of Trinidad Comment
  UC1198720  Horkelia tridentata subsp. flavescens Joseph P. Tracy 1912-7-31 3935 Humboldt near summit (Buck Mountain); Northern Coast Ranges 1676 Comment
  CAS-BOT-BC537895  Horkelia tridentata var. flavescens Lincoln Constance; Alan A. Beetle; Joseph P. Tracy 1940-5-17 2613 Humboldt Larabee Valley, near Eureka 762 Comment
  SD113612  Hosackia crassifolia var. crassifolia Darley F. Howe 1962-5-22 3305 Humboldt 4.3 miles east of Orick on Bald Mountain Road 609 Comment
  HSC58536  Hosackia oblongifolia var. oblongifolia Overton, Butler 1979-7-23 9454 Humboldt Near Horse Mountain Mine, close to the town of Willow Creek 1295 Comment
  HSC99466  Hosackia oblongifolia var. oblongifolia K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-14 120 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  HSC32886  Hydrophyllum occidentale Thomas W. Nelson 1973-5-30 971 Humboldt Humboldt/Trinity Co. line, Mt. Lassic 1790 Comment
  JEPS1642  Hydrophyllum tenuipes W. L. Jepson 1934-5-7 16691 Humboldt Bull Creek Comment
  JEPS1636  Hydrophyllum tenuipes Joseph P. Tracy 1925-6-1 6690 Humboldt Lawrence Creek Northern Coast Ranges (at crossing of the Kneeland Road) 457 Comment
  RSA12422  Hypericum androsaemum C. B. Wolf 1934-7-2 5874 Humboldt Small lake at Snow Camp (Mountains east of Korbel). 1372 Comment
  CAS-BOT-BC401233  Hypericum perforatum L. R. Abrams 1916-7-11 5973 Humboldt Alders Point Comment
  HSC56972  Hypericum perforatum Overton, Butler 1979-7-23 9501 Humboldt Near Titlow Hill, close to the town of Willow Creek. 1280 Comment
  HSC99605  Hypericum scouleri Jimerson, J. Pageau 1979-8-10 722 Humboldt Near Tish Tang A Tang Ridge, close to the town of Hoopa 1464 Comment
  UC169053  Hypochaeris glabra Joseph P. Tracy 1912-7-25 3812 Humboldt Kneeland Prairie 762 Comment
  HSC57319  Hypochaeris radicata Griswold, Butler 1979-7-10 6345 Humboldt Near Board Camp Mtn., close to the town of Willow Creek 1372 Comment
  CAS-BOT-BC123494  Iliamna latibracteata Doris K. Kildale 1926-7-5 2312 Humboldt Prairie Creek, near Davidson's. Comment
  CAS-BOT-BC206848  Iliamna latibracteata C. B. Wolf 1937-9-11 9322 Humboldt 3 miles north of Orick on Redwood Highway, Davison's Ranch on Prairie Creek 60 Comment
  UC902182 Image available Iliamna latibracteata Joseph P. Tracy 1949-9-1 18535 Humboldt Along Trinity Highway Willow Creek Canyon. 762 Comment
Read comments Feb 27 2012
  JEPS3745  Iris Rimo Bacigalupi with L. Constance, R. Moran, R. L. Rodriguez and S. Carlquist 1951-6-14 3414 Humboldt just below Snow Camp Mountain, about Snow Camp meadow, ridge between Mad River and Redwood Creek (Bald Mountain ridge) 1432 Comment
  HSC47580  Iris douglasiana Sheila Logan 1978-4-10 176 Humboldt Redwood Park behind HSU campus Comment
  HSC13859  Iris douglasiana S. S. Stutz 1963-5-4 34 Humboldt 7 mi. SE of Arcata on Fickle Hill Rd. Comment
  JEPS17244  Iris douglasiana W. L. Jepson 1927-7-3 12360 a Humboldt Meyers Station Comment
  UCSB879  Iris douglasiana Phillips, Priscilla 1958-6-7 Humboldt At entrance to Big Lagoon Park; North of Trinidad Comment
  CAS-BOT-BC123359  Iris humboldtiana Alice Eastwood; John Thomas Howell 1937-6-24 4857 Humboldt Road to Horse Mt. Comment
  HSC67518  Iris tenuissima J. P. Smith, J. O. Sawyer 1976-5-2 8620 Humboldt 3.7 mi. N of junction with Hwy. 299 on Hwy. 96 61 Comment
  JEPS88847  Iris tenuissima Carol A. Wilson 1992-5-17 92 -ph22 Humboldt 12.1 mi e U.S. Hwy 101 (on Bald Hill Rd); Redwood National Park 701 Comment
  JEPS60151  Isoetes nuttallii Joseph P. Tracy 1935-5-25 13841 Humboldt Fort Seward 106 Comment
  HSC7450  Isolepis cernua J. P. Tracy 1938-6-16 15942 Humboldt Trinidad 3 Comment
  UC1199148  Jaumea carnosa J. P. Tracy 1901-8-7 1251 Humboldt salt marsh Samoa (immediate vicinity of Eureka) 0 Comment
  UC1152120  Juncus articulatus Joseph P. Tracy 1938-8-14 16114 Humboldt w of mouth of South Fork (near the South Fork); Trinity River Valley, South Fork 182 Comment
  HSC13985  Juncus balticus subsp. ater C. B. Wolf 1927-8-22 772 Humboldt Big Lagoon Comment
  JEPS5820  Juncus bolanderi W. L. Jepson 1932-7-24 16393 Humboldt Tooey Ranch Garberville Comment
  UC184195  Juncus bufonius Joseph P. Tracy 1914-7-5 4573 Humboldt between High Prairie and Snow Camp; Northern Coast Ranges, Bald Mountain 1219 Comment
  UC594245  Juncus bufonius S. K. Harris, J. P. Tracy, and H. S. Yates 1936-6-17 3434 Humboldt nw slopes Buck Mountain 822 Comment
  RSA168857  Juncus capitatus Joseph P. Tracy 1948-6-13 18045 Humboldt Dobbyn Creek; At the former Will Perry Place. 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
  HSC45438  Juncus covillei Thomas W. Nelson, Jane Nelson 1978-7-2 4403 Humboldt Along margin of Lost Lake 1433 Comment
  UC1103056  Juncus covillei var. obtusatus J. P. Tracy 1900-9-9 948 Humboldt near Hydesville 60 Comment
  JEPS79912  Juncus covillei var. obtusatus Joseph P. Tracy 1926-7-5 7725 Humboldt Valley of South Yager Creek Northern Coast Ranges 762 Comment
  BLMAR316  Juncus effusus subsp. pacificus Jennifer Anthony-Wheeler 2002-8-6 316 Humboldt King range, grwong at mattole beach behind dune 6 Comment
  HSC63875  Juncus ensifolius M. A. Baker 1979-6-29 961 Humboldt Hopkins Creek 750 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
  RSA42045  Juncus hesperius Ella Dales Cantelow 1936-8-28 1634 Humboldt 4 1/2 miles SW of Dinsmore s Comment
  CDA39191  Juncus lescurii Gordon Leppig 1999-10-3 1259 Humboldt Big Lagoon County Park, Big Lagoon Bog. Comment
  HSC14026  Juncus lescurii David Adams 1960-7-10 Humboldt W of Mad River Slough 0 Comment
  HSC96370  Juncus lescurii Gordon Leppig 1999-10-3 1259 Humboldt Big Lagoon Bog, Big Lagoon County Park 3 Comment
  UCD150380  Juncus lescurii William Anderson and H. Mc. 1964-8-5 s.n. Humboldt Dry Lagoon. Comment
  HSC99314  Juncus phaeocephalus C. B. Wolf 1927-8-22 791 Humboldt Big Lagoon Comment
  SEINET10796051 Image available Juncus tenuis Unknown 1883-1 Rattan s.n. Humboldt Comment
  HSC73067  Juniperus communis var. saxatilis M. A. Baker 1980-6-16 1954 Humboldt Near Onion Mtn. 1280 Comment
  SD87718  Keckiella corymbosa Frank W. Peirson 1926-7-12 7025 Humboldt Klamath River near Weitchpec Comment
  SD87720  Keckiella corymbosa Frank W. Peirson 1926-7-12 7025 Humboldt Klamath River near Weitchpec Comment
  UC719827  Keckiella corymbosa Rogers McVaugh 1941-8-3 6213 Humboldt ca 8 mi s Garberville; Richardson Grove State Park Comment
  UCR136653  Keckiella corymbosa H. M. Pollard 1948-8-12 s.n. Humboldt Near mouth of Pearch Creek, near Orleans 366 Comment
  HSC102575  Kelloggia galioides M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-29 1562 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1579 Comment
  UC1222453  Kickxia elatine Joseph P. Tracy 1934-8-14 13572 Humboldt Alton North Coast Ranges (along Van Duzen River) 30 Comment
  UC902208  Kickxia elatine Joseph P. Tracy 1946-8-25 17648 Humboldt near mouth of Van Duzen River; Eel River 15 Comment
  RSA273316  Kickxia elatine James Payne Smith 1976-10-30 8997 Humboldt Mad River, east of the Essex Lane exit. Comment
  UC1103698  Koeleria macrantha Joseph P. Tracy 1929-7-4 8627 Humboldt French Camp Ridge 1066 Comment
  UCD86088  Koeleria macrantha Joseph P. Tracy 1936-8-2 15072 Humboldt Humboldt County. 1066 Comment
  UC205187  Kyhosia bolanderi Joseph P. Tracy 1919-9-18 5252 Humboldt meadow McKay; Trinity summit 1524 Comment
  UC552313  Lactuca biennis Joseph P. Tracy 1934-8-14 13583 Humboldt near Myers; North Coast Ranges 60 Comment
  HSC62179  Lapsana communis J. M. DiTomaso 1980-11-4 1997 Humboldt SE of junction of 11th St. and Hwy. 101., Arcata Comment
  HSC5139  Lasthenia californica D. E. Anderson 1963-5-19 2466 Humboldt Kneeland Area Comment
  HSC15267  Lathyrus glandulosus Francis Winter 1960-4-23 Humboldt 2 mi. E of Korbel, Korbel-Maple Creek Rd. 229 Comment
  UC1368670  Lathyrus glandulosus J. P. Tracy 1946-5-19 17530 Humboldt Kneeland, at Cameron Hill Kneeland; , Cameron Hill 670 Comment
  SD50721  Lathyrus latifolius Darley F. Howe 1959-8-4 2807 Humboldt 9 miles from Arcata on Hwy 299, dry hillside 121 Comment
  HSC71617  Lathyrus latifolius J. P. Smith 1973-5-26 6800 Humboldt Scotia Bluffs along the Eel River near Rio Dell Comment
  HSC38926  Lathyrus littoralis Linda M. Barker 1976-5-13 1489 Humboldt 3 mi. W of Arcata. Comment
  UC494166  Lathyrus littoralis H. E. Parks 1930-5-24 798 Humboldt Little River Lagoon Comment
  BLMAR671  Lathyrus nevadensis var. nevadensis Jennifer Wheeler 2013-6-3 671 Humboldt Lacks Creek, West side near broom at end of road 701 Comment
  JEPS79917  Lathyrus polymorphus Joseph P. Tracy 1932-7-20 10735 Humboldt just w of Corral Prairie (Klamath Mountains, Trinity Summit); Klamath Mountains, Trinity Summit 1524 Comment
  HSC73128  Lathyrus polyphyllus M. A. Baker 1980-5-18 1283 Humboldt Near Black Mtn. 1006 Comment
  POM277779  Lathyrus polyphyllus Lyman Benson 1928-7-9 379 Humboldt Weott Ranger Station. Seaward N coast. Watershed- South Fork Eel Rivers. 61 Comment
  UCR84790  Lathyrus tingitanus Kathy Harper 1992-5-14 s.n. Humboldt Coast Range, Van Duzen River, c. 1.5 mi. west of Bridgeville on State Hwy 36 195 Comment
  SBBG3371  Lathyrus torreyi H. and M. Dearing 1933-5-16 Humboldt near Weott Comment
  RSA64962  Lathyrus torreyi C. L. Hitchcock 1949-6-7 19084 Humboldt Ca 15 miles E of Blue Lake, along Highway #299. Comment
  RSA74591  Lathyrus tracyi C. L. Hitchcock 1949-6-8 19086 Humboldt 3 miles SE of Willow Creek, along Highway #299. Comment
  UC1103517  Lemna turionifera Joseph P. Tracy 1915-9-5 4667 Humboldt between Buckspot and Elk River (at Eureka); Northern Coast Region, Eureka 0 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
  CAS-BOT-BC12877  Lepidium strictum Joseph P. Tracy 1941-5-4 16866 Humboldt Scotia. 30 Comment
  HSC17071  Leptosiphon androsaceus Victor Duran 1933-5-10 3403 Humboldt Near Blocksburg Comment
  UC673120  Leptosiphon latisectus Joseph P. Tracy 1940-5-17 16553 Humboldt Larrabee Valley 731 Comment
  CAS-BOT-BC341829  Lessingia nemaclada Harley P. Chandler 1901-6-1 1503 Humboldt North Coast Ranges. Klamath River 426 Comment
  CDA7526  Leucanthemum vulgare T. C. Fuller 1958-6-17 1832 Humboldt Freeway at Arcata. 0 Comment
  HSC66273  Lewisia cotyledon var. cotyledon M. A. Baker 1980-7-24 3196 Humboldt Near Orleans Mtn. 1625 Comment
  HSC97936  Lewisia triphylla Cara Witte 2007-5-31 145 Humboldt Off National Forest 1. Near Board Camp Mountain. Approximately 4 miles south of Brays Opening and 1/2 mile west of road. 1510 Comment
  UC926380  Leymus X vancouverensis A. S. Hitchcock 1915-7-13 1506 Humboldt sand dunes near Samoa; Eureka Comment
  UC1103199  Leymus mollis subsp. mollis J. P. Tracy 1900-7-4 884 Humboldt ocean beach opp. Eureka; Samoa Comment
  UCD65598  Leymus triticoides Malcolm A. Nobs; S. Galen Smith 1949-8-3 1204 Humboldt Salt marshes bordering Humboldt Bay, CA. 2 miles N of Eureka. Comment
  HSC98621  Ligusticum californicum Cara Witte 2008-7-28 957 Humboldt Spike Buck Mountain. Forest Service Road 5N18. Near intersection with National Forest 1. 1592 Comment
  HSC90663  Lilaeopsis occidentalis Gail Newton 1982-6-10 3636 Humboldt Elk River Wildlife Area, Eureka Comment
  HSC76428  Lilium bolanderi Denis Kearns 1981-7-6 87 Humboldt Near Mosquito Lake 1256 Comment
  CAS-BOT-BC130689  Lilium occidentale Doris K. Kildale 1925-6-30 1384 Humboldt On road to Humboldt Country Club 7 miles south of Eureka Comment
  JEPS563  Lilium pardalinum Joseph P. Tracy 1937-7-24 15533 Humboldt head of Little Hors-Linto Creek; Trinity Summit 1371 Comment
  HSC56956  Lilium pardalinum subsp. pardalinum Overton, Butler 1979-7-23 9467 Humboldt Near Horse Mtn. Creek, close to the town of Willow Creek 1326 Comment
  UC902197  Limnanthes douglasii Joseph P. Tracy 1948-5-31 18009 Humboldt Harris 609 Comment
  HSC17100  Limnanthes douglasii subsp. nivea William J. Ferlatte, B. D. Rogers 1966-6-15 2106 Humboldt Larabee Valley 762 Comment
  HSC97634  Limnanthes douglasii subsp. nivea Cara Witte 2007-6-4 191 Humboldt Cold Spring. 0.5 mile S of Titlow Hill. 1386 Comment
  JEPS58151  Linanthus androsaceus W. L. Jepson 1902-6-19 1884 Humboldt Harris to Fort Seward Ranch Ridge (= Mail Ridge) 1066 Comment
  UC146166  Linanthus bicolor Joseph P. Tracy 1908-6-9 2650 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  UC60879  Linanthus bolanderi Harley P. Chandler Jun 1901 1540 Humboldt Klamath River North Coast Ranges 426 Comment
  HSC97247  Linanthus nuttallii subsp. nuttallii Thomas W. Nelson, Dick Brummitt & Barbara Ertter 2004-7-4 9284 Humboldt Trinity River Bar down stream from the mouth of Willow Creek 152 Comment
  RSA8323  Linaria vulgaris I. L. Wiggins 1932-7-19 5890 Humboldt Roadside near Trinidad Head, Comment
  UC774996  Linnaea borealis var. longiflora Carl B. Wolf 1937-8-13 9265 Humboldt on new road towards Trinity Summit 12 mi e Hoopa Valley; North Coast Range, e of Hoopa Valley 1676 Comment
  HSC95072  Linum bienne Andrea Pickart 2002-7-2 146 Humboldt King Salmon Sand Spit 0 Comment
  UC1561309  Linum bienne Barbara Ertter with Thomas J. Delendick 1987-5-16 6911 Humboldt 8 mi e of Arcata (9 1/2 mi w of Lord Ellis Summit, Highway 299 roadside); Highway 299 Comment
  HSC27569  Listera caurina J. D. Ackerman, A. Montalvo 1973-6-29 71 Humboldt 2 mi. N of Manila Comment
  HSC49390  Listera cordata var. nephrophylla R. York 1979-4-21 245 Humboldt Behind the town of Korbel, Camp Bauer Comment
  UC1083192  Lithocarpus densiflorus Herbert L. Mason 1928-7-14 4899 Humboldt near Garberville (East Fork of Eel River); East Fork of Eel River Comment
  UC1196368  Lithocarpus densiflorus Joseph P. Tracy 1923-5-13 6201 Humboldt Strongs Station Northern Coast Ranges (forest on Van Duzen River) 60 Comment
  CAS-BOT-BC36103  Lithocarpus densiflorus var. densiflorus L. R. Abrams 1916-7-11 6005 Humboldt Between Blackberry and Bridgeville Comment
  RSA21079  Lithocarpus densiflorus var. densiflorus Carl B. Wolf 1937-8-13 9239 Humboldt North coast range, 8 mi. east of Hoopa Valley on new road towards Trinity summit. 1220 Comment
  HSC98097  Lithophragma campanulatum Cara Witte, Michael Scott 2007-6-22 344 Humboldt Board Camp Mountain. Road to Tri Board Camp. 1494 Comment
  HSC40251  Lolium perenne Linda M. Barker 1976-7-5 1646 Humboldt 3 mi. W of Arcata. Comment
  POM188113  Lolium perenne Marcus E. Jones 1931-7-16 29212 Humboldt Arcata. Comment
  SEINET200608 Image available Lolium perenne J. P. Tracy 1923-8-25 6539 Humboldt Eureka 13 Comment
  RSA296857  Lolium perenne subsp. multiflorum Lincoln Constance 1927-5-27 699 Humboldt Gravel bar of South Fork of Eel River, S. end of Dryerville Bridge 46 Comment
  UC1103157  Lolium temulentum Joseph P. Tracy 1913-6-19 4211 1/2 Humboldt opposite Buck Mountain (Dinsmore's Ranch, in Valley of Van Duzen River); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  SEINET200742  Lomatium dasycarpum Joeseph P. Tracy 1923-6-27 6380 Humboldt Trinity River Valley, near the South Fork 183 Comment
  UC1197164  Lomatium dasycarpum subsp. dasycarpum Joseph P. Tracy 1942-6-23 17229 Humboldt 1 mi. w. Box Camp (on summit of ridge on Hoopa trail, Trinity Summit); Trinity Summit 1219 Comment
  HSC32939  Lomatium dissectum var. dissectum Thomas W. Nelson, James Nelson 1973-5-28 953 Humboldt McKeown Ranch N of Dinsmore Comment
  HSC74190  Lomatium dissectum var. dissectum M. A. Baker 1980-7-23 3151 Humboldt Near Orleans Mtn. 1859 Comment
  JEPS16236  Lomatium dissectum var. dissectum Joseph P. Tracy 1913-6-20 4237 Humboldt lower foothhills of Buck Mt. (on its n.w. slope); Northern Coast Ranges, Buck Mt. 762 Comment
  UC1197163  Lomatium dissectum var. dissectum Joseph P. Tracy 1926-7-5 7737 Humboldt mouth of Middle Yager Creek; Northern Coast Ranges, Middle Yager Creek 762 Comment
  UC642280  Lomatium dissectum var. dissectum Joseph P. Tracy 1930-6-29 8808 Humboldt lower foothills on n.w. slope Buck Mt.; Northern Coast Ranges, Buck Mt. 762 Comment
  HSC71235  Lomatium macrocarpum M. A. Baker 1980-5-23 1385 Humboldt Near Buck Mtn. 1524 Comment
  HSC37192  Lomatium macrocarpum Barbara Kelly 1976-5-13 253 Humboldt Below road at Kneeland Airport Comment
  CHSC97956  Lomatium nudicaule Kaylea Eickhoff; Cara M. Witte 2005-6-3 1 Humboldt White Oak Opening, 19.3 miles south of Hwy. 299 on NF1. UTM 0441136, 4507151. 1240 Comment
  HSC45654  Lomatium nudicaule Diane L. Reed 1978-4-22 27 Humboldt Tish Tang Campground, 5 mi. N of Willow Creek on Hwy. 96 Comment
  JEPS14248  Lomatium tracyi Joseph P. Tracy 1933-7-25 12895 Humboldt Grouse Mountain; ; Grouse Mt. 1524 Comment
  JEPS15822  Lomatium tracyi Joseph P. Tracy 1926-6-20 7610 Humboldt Northern Coast Ranges, Horse Mt. 1524 Comment
  HSC35032  Lomatium utriculatum Thomas W. Nelson, James Nelson 1975-5-24 1858 Humboldt McKeown Ranch, N of Dinsmore. Comment
  SEINET13944678 Image available Lomatium utriculatum William A. Weber 1965-1 12292 Humboldt slope above Van Duzen River W of Dinsmore; 2400 ft alt 732 Comment
  UC726590  Lonicera hispidula var. vacillans A. A. Heller 1923-7-10 13799 Humboldt between Scotia and Pepperwood; Eel River Comment
  SD88367  Lonicera involucrata Darley F. Howe 1972-5-7 Humboldt Trinidad head light station. Comment
  UCD137380  Lonicera involucrata Roman Gankin 1965-8-6 547 Humboldt 1.3 miles south of Samoa, Samoa Peninsula. Comment
  UCSB22320  Lonicera involucrata Keefe, Joseph 1967-7-8 Humboldt Junction Crannell Road and Little River Drive, north of Eureka 6 Comment
  HSC31644  Lonicera involucrata var. ledebourii Glenn McGourty 1974-6-1 78 Humboldt Comment
  OBI6309  Lonicera involucrata var. ledebourii Joseph P. Tracy 1943-3-21 17413 Humboldt North Coast ranges Comment
  SBBG69582  Lonicera involucrata var. ledebourii S. W. Hutchinson -Apr-1927 91 Humboldt near Eureka 8 Comment
  UC180197  Lonicera involucrata var. ledebourii Joseph P. Tracy 1914-6-14 4506 Humboldt near Hydesville; Northern Coast Region 60 Comment
  HSC98250  Lotus aboriginus D. E. Anderson 1963-9-29 2850 Humboldt Fish Lake. Comment
  UC534996  Lotus aboriginus H. E. Parks Jul 1932 Humboldt Bishop Pine Lodge Trinidad 60 Comment
  HSC48615  Lotus corniculatus Mark Flippo 1978-5-23 68 Humboldt Mckinleyville, Bella Vista Rd. Comment
  HSC96480  Lotus corniculatus Gordon Leppig 1997-8-3 644 Humboldt Big Lagoon County Park, Big Lagoon Bog 3 Comment
  RSA21083  Lotus denticulatus Carl B. Wolf 1937-6-19 8911 Humboldt Van Duzen River, .3 mi. above Bridgeville. 122 Comment
  UC15583  Lotus formosissimus Harley P. Chandler May 1901 1200 Humboldt Humboldt Bay Northern Coast Ranges 30 Comment
  UC1197292  Lotus humistratus Joseph P. Tracy 1931-6-14 9575 Humboldt Alton, along Van Duzen River Northern Coast Ranges, Van Duzen River 30 Comment
  UC1197297  Lotus micranthus Joseph P. Tracy 1911-7-7 3435 Humboldt viz ridge n of Willow Creek (between Willow and Campbell Creeks, near the summit); Northern Coast Ranges, Brannan Mountain 1219 Comment
  UC1197314  Lotus oblongifolius var. oblongifolius Joseph P. Tracy 1932-7-13 10519 Humboldt Corral Prairie Klamath Mountains 1524 Comment
  UC1223420  Lotus purshianus var. purshianus Joseph P. Tracy 1933-8-30 13021 Humboldt Titlow Mountain Grouse Mountain 1524 Comment
  UC1223411  Lotus yollabolliensis Joseph P. Tracy 1941-8-28 17048 Humboldt near Blake Lookout (along summit South Fork Mountain); Northern Coast Ranges, South Fork Mountain 1706 Comment
  HSC49990  Luina hypoleuca M. A. Baker 1979-6-6 776 Humboldt N facing slope near to road to Hospital Mt. 610 Comment
  HSC6869  Lunaria annua D. Zittin 1970-5-13 1 Humboldt Arcata Comment
  UC726370  Lupinus A. A. Heller 1923-7-8 13774 Humboldt near Fortuna; near Fortuna 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
  JEPS109579  Lupinus adsurgens Dean W. Taylor 2002-9-12 18340 Humboldt ca. 0.5 mi N of Lake Prairie 1097 Comment
  UC503010  Lupinus affinis Joseph P. Tracy 1932-5-1 9877 Humboldt vicinity Garberville; Northern Coast Ranges, vicinity of Garberville 121 Comment
  SEINET12154351  Lupinus albicaulis var. shastensis J. P. Tracy 1940-1 16687 Humboldt Wilder Range Comment
  UC503003  Lupinus albicaulis var. shastensis Joseph P. Tracy 1932-6-14 10161 Humboldt Trinity River Valley at Willow Creek; Northern Coast Ranges, Trinity River Valley 152 Comment
  SEINET200685  Lupinus albifrons Joseph P. Tracy 1926-5-9 7458 Humboldt Valley of South Yager Creek Comment
  HSC31465  Lupinus arboreus Steve Selva, Roger Jensen 1974-8-28 89 Humboldt Approx. 10 mi. S of Arcata on the sand dunes of the Samoa Peninsula Comment
  UC1129355  Lupinus arboreus H. L. Person 1931-7-30 Humboldt Fieldbrook; Eureka Quadrangle Comment
  UCR122384  Lupinus arboreus George K. Helmkamp, E. A. Helmkamp 2001-7-8 6999 Humboldt North Coast, north spit of Samoa Peninsula, 0.5 mi north of CA Hwy 255 bridge over Humboldt Bay 6 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
  POM66214  Lupinus arboreus var. arboreus Marcus E. Jones 1924-4-26 s.n. Humboldt Eureka. Comment
  HSC71467  Lupinus bicolor J. P. Smith, J. O. Sawyer 1973-5-12 6680 Humboldt 3.3 mi. from Redwood Creek on Hoopa Rd. Comment
  HSC76189  Lupinus latifolius Overton, Butler 1979-7-24 9779 Humboldt Near Black Rock, close to the town of Willow Creek 1463 Comment
  JEPS65283  Lupinus latifolius var. latifolius Lincoln Constance 1934-5-29 714 Humboldt Upper Look Prairie; South Fork Eel River, Bull Creek Region 365 Comment
  UC169060  Lupinus latifolius var. latifolius Joseph P. Tracy 1912-7-3 3719 Humboldt Alton; Northern Coast Region, Alton 30 Comment
  UCD107974  Lupinus littoralis Joseph P. Tracy 1900-7-4 870 Humboldt Ocean Beach at Humboldt Bay. Comment
  UC170031  Lupinus polyphyllus var. polyphyllus Joseph P. Tracy 1912-7-21 3784 Humboldt Alton; Northern Coast Region, Alton 30 Comment
  HSC91365  Lupinus rivularis A. Smith, A. Eller, B. Hoffman 1989-5-7 34 Humboldt 1 mi. W on Somoa Blvd. from J St. 0 Comment
  HSC58118  Lupinus tracyi G. L. Clifton, Griswold 1979-8-1 12083 Humboldt Near N Trinity Mtn., close to the town of Hoopa 1799 Comment
  RSA87079  Lupinus vallicola subsp. apricus F. W. Peirson 1923-7-10 4221 Humboldt Garberville Comment
  SEINET10490278  Lupinus vallicola subsp. apricus Charles Piper Smith 1948-5-10 Smith 48254 Humboldt Hwy 101, Garberville, 0.3 mi N. Comment
  RSA296811  Lupinus viridifolius Lincoln Constance 1934-5-29 714 Humboldt South Fork Eel River, Upper Look Prairie. 366 Comment
  UC964789  Luzula comosa var. laxa Harold E. Parks and Joseph P. Tracy 1947-6-26 11643 Humboldt McKay Camp, South Fork Mt. 1676 Comment
  CAS-BOT-BC436737  Luzula comosa var. laxa R. K. Gierisch; D. H. Esplin 1969-7-1 3539 Humboldt Six Rivers area: Grouse Mt. 1584 Comment
  UC1152125  Luzula parviflora Joseph P. Tracy 1930-7-17 8973 Humboldt near McKay camp; South Fork Mountain, near McKay Camp 1676 Comment
  HSC97961  Luzula parviflora Cara Witte 2007-6-13 258 Humboldt Along Forest Service Road 5N04. 1/4 mile east of spring near Grouse Mountain. 1564 Comment
  UC1103680  Luzula parviflora Joseph P. Tracy 1925-6-7 7056 Humboldt Willow Creek Canyon Northern Coast Ranges, Willow Creek Canyon 609 Comment
  UCSB25509  Luzula parviflora Breedlove, Dennis 1962-6-8 Humboldt along U.S. Highway 101; 8 miles north of Orick 60 Comment
  UC524369  Lycopodiella inundata Ira L. Wiggins 1932-7-19 5893 Humboldt low swamp at s end Big Lagoon Comment
  HSC95500  Lycopodium clavatum Gordon Leppig 2004-2-3 2129 Humboldt Pacific Lumber Co. land, NE edge of THP 1-04-001 HUM. 300 Comment
  LA205867  Lycopodium clavatum Lawrence L. Kiefer; D. Branscomb 1964-5-20 1435 Humboldt near Trinidad, 1 mi E of Moonstone Beach on Kuntz property 152 Comment
  UC552469  Lycopus uniflorus Eleanor Armstrong 1934-8-23 1175 Humboldt Richardson Grove 121 Comment
  JEPS431  Lysichiton americanus W. L. Jepson 1936-8-17 17916 Humboldt 2 mi. s. Field's Landing (near Still's ranch) Comment
  UC179917  Lysichiton americanus Joseph P. Tracy 1914-9-13 4627 Humboldt at Eureka Northern Coast Region, Eureka 0 Comment
  UC486490  Lysichiton americanus H. E. and S. T. Parks 1930-9-14 781 Humboldt Big Lagoon Comment
  UCD138077  Lysichiton americanus Linda M. Barker 1976-3-11 1321 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  HSC36094  Lysichiton americanus Michael L. Chase 1973-5-14 10 Humboldt Along Van Duzen at junction with Yager Creek 37 Comment
  UC668292  Lythrum hyssopifolia Joseph P. Tracy 1938-7-5 16011 Humboldt Carlotta, by old Strong's District School House, 5 mi e of town Carlotta 45 Comment
  HSC46151  Lythrum hyssopifolia J. P. Smith 1973-5-26 6814 Humboldt Scotia Bluffs along the Eel River near Rio Dell Comment
  RSA0015873  Lythrum hyssopifolia Lyman Benson 1927-7-11 61 Humboldt Weott Ranger Station. Seaward N Coast range, South Fork Eel River. 61 Comment
  RSA0015875  Lythrum hyssopifolia H. M. Pollard 1945-8-28 s.n. Humboldt Near Harley place. Comment
  CAS-BOT-BC334475  Madia Robert F. Thorne; P. Everett 1965-8-7 35216 b Humboldt Samoa Peninsula, elev near sea level. 0 Comment
  CAS-BOT-BC342807  Madia elegans Lincoln Constance; Reed C. Rollins 1942-5-11 2874 Humboldt California North Coast Ranges. Hoopa Valley 5 miles south of Hoopa 121 Comment
  UC1093114  Madia elegans Richard Snow 1957-8-31 306 Humboldt 4 mi n of Garberville; Hayfield, Dean Creek Lodge Comment
  SD88396  Madia elegans subsp. vernalis Darley F. Howe 1972-5-6 Humboldt 1.5 miles north of Phillipsville Comment
  CAS-BOT-BC344357  Madia exigua L. R. Abrams 1916-7-11 5995 Humboldt Between Blocksberg & Bridgeville Comment
  HSC54202  Madia exigua Griswold, Butler 1979-7-12 7242 Humboldt Near Cedar Creek, close to the town of Willow Creek 1158 Comment
  CAS-BOT-BC343022  Madia gracilis Ira L. Wiggins 1930-7-11 4679 Humboldt Near Samoa Comment
  HSC74087  Madia gracilis Thomas W. Nelson, James Nelson 1976-5-30 2615 Humboldt McKeown Ranch, N of Dinsmore. Comment
  CAS-BOT-BC343015  Madia gracilis Joseph P. Tracy 1933-7-21 12817 Humboldt Redwood House, on road from Van Duzen River to South Yager 762 Comment
  RSA47161  Madia gracilis subsp. gracilis Doris K. Kildale 1927-7-1 3619 Humboldt Alton Hill Comment
  HSC81706  Madia sativa Thomas W. Nelson 1980-8-12 6239 Humboldt Logging roads S of Lundbar Hills 61 Comment
  RSA554592  Mahonia aquifolium W. Wisura 1993-5-9 4910 Humboldt Northwest: Hwy 299, 5.7 mi. W of Willow Creek at E-fork camp ground. Comment
  POM224223  Maianthemum dilatatum H. E. Parks 1932-05 4289 Humboldt Bishop Pine Lodge, Trinidad. Comment
  CAS-BOT-BC508521  Maianthemum dilatatum L. R. Abrams; R. Bacigalupi 1922-6-25 8300 Humboldt Near northern county line Comment
  HSC97658  Maianthemum dilatatum Danny Pineda 2001-5-3 16 Humboldt 3 mi. E of Hwy. 299 on West End Rd. 61 Comment
  SEINET12047101  Maianthemum dilatatum F. H. Utech 1972-1 72 -014 Humboldt within city limits of Arcata, Humboldt State University Forest, W of campus 183 Comment
  SEINET8489279  Maianthemum dilatatum H. P. Chandler 1905-1 s.n. Humboldt Eureka. Comment
  HSC15656  Maianthemum racemosum subsp. amplexicaule Harvey Doerksen 1962-5-4 3 Humboldt W of Korbel, S side of Mad River Comment
  HSC48830  Maianthemum racemosum subsp. amplexicaule Brad Klipfel, J. P. Smith, J. O. Sawyer 1973-5-27 40 Humboldt Grogan's Hole near N Trinity Mtn. 1829 Comment
  CAS-BOT-BC511451  Maianthemum racemosum subsp. amplexicaule S. Morrissette; J. Williams; K. Kopper 1994-5-6 049 Humboldt 0.35 mile south of Hwy 299 on Titlow rd. 853 Comment
  RSA289948  Maianthemum racemosum subsp. amplexicaule Lincoln Constance 1934-6-2 793 Humboldt Bull Creek road to mouth of Bull Creek, and up Bull Creek. Bull Creek region, South Fork Eel River Comment
  HSC34159  Maianthemum stellatum Linda M. Barker 1974-5-11 177 Humboldt Redwood National Park, Bald Hills Rd., Gans Prairie 549 Comment
  HSC70326  Maianthemum stellatum M. A. Baker 1980-6-8 1881 Humboldt Near Buck Flat. 1554 Comment
  HSC58709  Malacothrix floccifera Griswold, Butler 1979-7-12 7241 Humboldt Near Cedar Creek, close to the town of Willow Creek 1158 Comment
  HSC98706  Malacothrix floccifera Cara Witte 2007-7-24 572 Humboldt Ammon Ridge Road. 4 miles east of intersection with National Forest 1. 1462 Comment
  CAS-BOT-BC140134  Malus fusca C. B. Wolf 1930-10-26 1766 Humboldt So. edge of Big Lagoon near the Redwood Highway Bridge 3 Comment
  UC154238  Malus fusca J. P. Tracy 1906-11-4 2553 Humboldt immediate vicinity Eureka 0 Comment
  BLMAR684  Marah fabacea Jennifer Wheeler 2013-6-25 684 Humboldt King range, Strawberry Rock 76 Comment
  UC505101  Marah oregana Joseph P. Tracy 1929-4-28 8543 Humboldt Willow Creek Northern Coast Ranges, Trinity River Valley 152 Comment
  HSC45592  Marah oregana Diane L. Reed 1978-5-27 127 Humboldt Horse Mtn., on Titlow Hill Rd. 1.5 mi. from junction with Hwy. 299 Comment
  HSC7030  Marah oregana S. J. Hawks 1965-4-6 17 Humboldt Luffenholtz Beach Comment
  UC1199283  Matricaria discoidea Joseph P. Tracy 1933-5-20 12217 Humboldt Capetown 30 Comment
  UC162807  Medicago arabica J. P. Tracy 1907-5-10 2560 Humboldt Immediate vicinity of Eureka 0 Comment
  HSC14978  Medicago polymorpha A. E. Inman 1962-5-25 Humboldt Mad River, Lindsey Creek jct., 50 yards W of Lindsey Creek. Comment
  HSC14972  Medicago polymorpha Francis Winter 1960-4-23 Humboldt 4 mi. N of Dollar Ranch, on Korbel-Maple Creek Rd. 244 Comment
  HSC14985  Medicago polymorpha N. R. Waite 1965-5-19 38 Humboldt W edge of Humboldt State University campus. Comment
  SEINET7296138 Image available Melica altissima Joseph P. Tracy 1937-1 15549 Humboldt Trinity Summit; On Ridge 2 miles east of Grove's Prairie. 1524 Comment
  SEINET202035  Melica aristata Joseph P. Tracy 1948-8-10 18157 Humboldt Trinity summit. On ridge 2 mi. east of Grove's Prairie. Comment
  RSA10133  Melica bulbosa Joseph P. Tracy 1932-7-12 10445 Humboldt Open ground at Corral Prairie, Trinity Summit, Klamath Mountains. 1524 Comment
  HSC10337  Melica californica J. A. Waller 1965-5-2 31 Humboldt Along Hwy. 96 near Willow Creek. Comment
  UCD87232  Melica californica Joseph P. Tracy 1943-5-9 17418 Humboldt Trinity River Valley, at Willow Creek. 152 Comment
  UC1145125  Melica geyeri Joseph P. Tracy 1942-6-2 17099 Humboldt 2 mi n Bridgeville 609 Comment
  UC34139  Melica spectabilis Joseph Burtt Davy and Walter C. Blasdale 1899-6-21 5827 Humboldt Trinity Summit Comment
  UC552689  Melica stricta Joseph P. Tracy 1935-7-28 14333 Humboldt Head of Brett Hole; Trinity Summit 1828 Comment
  CAS-BOT-BC262472  Melica subulata Joseph P. Tracy 1935-7-25 14224 Humboldt Trinity Summit. Near Corral Prairie 1584 Comment
  HSC10367  Melica subulata R. D. Zortman 1963-5-5 31 Humboldt 5 mi. NE of Arcata, S of Mad River, off Warren Creek Rd. 91 Comment
  HSC99431  Melica subulata K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-7 80 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  UC1103161  Melica subulata H. E. Parks and Joseph P. Tracy 1934-6-27 11075 Humboldt Grouse Mt. 1432 Comment
  UC526922  Melica subulata Joseph P. Tracy Jul 16 1930-Jul 19 1930 8913 Humboldt near McKay Camp; Northern Coast Ranges, South Fork Mountain 1676 Comment
  UCD88660  Melica subulata H. L. Person 1932-5-11 19413 Humboldt Arcata. 0 Comment
  UC1197423  Melilotus albus Joseph P. Tracy 1920-8-15 5359 Humboldt Bluff Creek Northern Coast Ranges, Klamath River 152 Comment
  JEPS63479  Mentha canadensis W. L. Jepson 1936-8-7 17936 Humboldt near Arcata (Mad River); Mad River Comment
  SEINET10498893  Mentha pulegium Mary Susan Taylor 1977-8-5 Taylor 1429 Humboldt Abundant around bridge over Eel River, at the turnoff from Hwy 1 to Ferndale, in Fernbridge. 2 Comment
  SEINET12277649  Mentha spicata J. P. Tracy 1950-1 19370 Humboldt Klamath River, near Slate Creek, Below Orleans 8 miles 122 Comment
  UC1934548  Menziesia ferruginea subsp. ferruginea T. C. Wells & W. J. Crins 1986-7-29 636 Humboldt Redwood National Park, on Hwy. 101 pullout neat mile 130.74 marker 30 Comment
  CAS-BOT-BC322677  Microseris laciniata S. K. Harris; J. P. Tracy; H. S. Yates 1936-6-17 3482 Humboldt Highway about one mile west of Bridgeville Comment
  HSC103080  Microseris nutans Sydney Carothers 2014-6-12 14 Humboldt Six Rivers National Forest, Lassics Botanical Area, north slope Red Lassic 1712 Comment
  HSC74440  Microseris nutans M. A. Baker 1980-6-28 2478 Humboldt Near Mad River Buttes 1445 Comment
  UC582708  Mimulus arvensis H. E. Parks and Joseph P. Tracy 1931-5-9 12541 Humboldt near Miranda 60 Comment
  JEPS15187  Mimulus aurantiacus var. aurantiacus G. T. Nordstrom July 1937 1437 Humboldt 1 1/2 mi sw Orick; Orick Quadrangle Comment
  UCSB10373  Mimulus aurantiacus var. aurantiacus Parks, H.; Parks, S. 1951-6-1 Humboldt Along bay shore near landing, Trinidad Comment
  UC26714 Image available Mimulus aurantiacus var. pubescens J. Burtt Davy before June, 1894 Humboldt Comment
  HSC20709  Mimulus dentatus R. D. Zortman 1963-5-12 41 Humboldt 5 mi. NE of Arcata, S of the Mad River, off Warren Creek Rd. 91 Comment
  POM87667  Mimulus dentatus L. R. Abrams, R. C. Bacigalupi 1922-6-25 8279 Humboldt Big Lagoon, south of Orick. Comment
  SBBG66765  Mimulus dentatus L. Rowntree 1931-7-24 Humboldt Carlotta Comment
  POM268160  Mimulus dentatus H. C. Cantelow 1936-5-18 s.n. Humboldt North of Orick. Comment
  UC418983  Mimulus dentatus H. E. Parks May 1930 Humboldt above Carlotta; Van Duzen River Comment
  HSC60081  Mimulus guttatus M. A. Baker 1978-5-6 472 Humboldt Bald Hills Rd., between Klamath River and French Camp Rd. Comment
  JEPS10795  Mimulus inodorus Joseph P. Tracy 1932-7-16 10610 Humboldt Corral Prairie Trinity Summit 1584 Comment
  JEPS10789  Mimulus inodorus Joseph P. Tracy Jul 16 1930-Jul 19 1930 8983 Humboldt McKay Camp Northern Coast Ranges, South Fork Mountain 1676 Comment
  HSC33170  Mimulus moschatus Thomas W. Nelson 1973-8-19 1110 Humboldt McKeown Ranch N of Dinsmore 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
  JEPS14946  Mimulus nanus var. nanus Joseph P. Tracy 1937-7-29 15597 Humboldt w slope near top South Fork Mountain (at Hyampom Trail) 1676 Comment
  UC169323  Mimulus nasutus Harley P. Chandler 1901-6-16 1509 Humboldt Somes Bar North Coast Ranges, Klamath River 426 Comment
  JEPS11057  Mimulus primuloides subsp. primuloides Joseph P. Tracy 1932-7-14 10534 Humboldt Corral Prairie Trinity Summit 1584 Comment
  HSC55694  Mimulus pulsiferae Overton, Butler 1979-7-26 10015 Humboldt Near White Rock Spring, close to the town of Willow Creek 1554 Comment
  HSC97942  Mimulus pulsiferae Cara Witte 2007-6-20 304 Humboldt National Forest 1. 1/4 mile north of intersection with 5N09. 1434 Comment
  SEINET6904196  Minuartia californica Wanda P. Vestal, A. G. Vestal 1937-6-22 s.n. Humboldt Kneeland prairie, about 4 miles southeast of Kneeland. Comment
  CAS-BOT-BC388625  Minuartia douglasii Doris K. Kildale 1926-4-25 1801 Humboldt Willow Creek Flat 152 Comment
  UC1198338  Minuartia douglasii Joseph P. Tracy 1947-7-5 17793 Humboldt Mud Springs Trinity Summit 1371 Comment
  UC161040  Minuartia douglasii Ethel Tracy May 1905 Humboldt Harris Northern Coast Ranges 762 Comment
  HSC97557  Minuartia nuttallii subsp. gregaria Cara Witte 2007-6-1 164 Humboldt Horse Mountain Botanical Area. Along Forest Service 6N38. 1311 Comment
  CAS-BOT-BC433010  Mitella diversifolia Joseph P. Tracy 1942-6-23 17235 Humboldt Along trail from Hoopa to the summit. Trinity Summit. Near Box Camp 1524 Comment
  HSC41896  Mitella ovalis M. A. Baker 1977-4-23 175 Humboldt 2.5 mi. S of Shelter Cove Rd., S Fork of Bear Creek at Wailaki Campground 561 Comment
  UC673257  Mitella ovalis Lincoln Constance and Reed C. Rollins 1942-5-11 2865 Humboldt near summit 8 mi e Blue Lake; North Coast Ranges Comment
  HSC37863  Modiola caroliniana Peter Sorensen 1976-6-16 Humboldt Humboldt Bay; Woodley Island Comment
  HSC97645  Moehringia macrophylla C. Witte 2007-5-17 27 Humboldt Horse Mountain Botanical Area. Forest Service Road 6N18. Near utility towers. 1483 Comment
  UC229833  Mollugo verticillata Joseph P. Tracy 1921-10-16 5972 Humboldt near Willow Creek (Trinity River Valley); Northern Coast Ranges, Trinity River Valley 152 Comment
  HSC56468  Monardella glauca Griswold, Butler 1979-7-12 7278 Humboldt Near Cedar Creek, close to the town of Willow Creek 1158 Comment
  HSC57989  Monardella odoratissima G. L. Clifton, Griswold 1979-7-31 11732 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1805 Comment
  CAS-BOT-BC221969  Monardella odoratissima subsp. glauca Henry M. Pollard 1943-8-1 s.n. Humboldt Orleans Mt. 1828 Comment
  CAS-BOT-BC215568  Monardella odoratissima subsp. pallida Doris Kildale Gillespie 1931-6-7 10625 Humboldt South Fork Mt. Blake Lookout 1726 Comment
  BLMAR645  Monardella sheltonii Jennifer Wheeler 2011-8-31 645 Humboldt Lacks creek, Pine Ridge road, spur 3 at Stormy Saddle 1097 Comment
  JEPS62396  Monardella villosa subsp. villosa W. L. Jepson 1932-7-28 16433 Humboldt Dyerville 88 Comment
  UC1409015  Monotropa hypopitys Robert F. Thorne and P. Everett 1965-8-5 35132 a Humboldt Wailaki Recreation Site 609 Comment
  UC183608  Montia chamissoi Joseph P. Tracy 1913-6-17 4169 Humboldt Buck Mountain, near the summit Buck Mountain; Northern Coast Ranges, Buck Mountain 1676 Comment
  CAS-BOT-BC444807  Montia diffusa L. R. Abrams 1916-7-11 5993 Humboldt Between Blocksberg and Bridgeville Comment
  CAS-BOT-BC445047  Montia linearis Volney Rattan 1882-1-1 s.n. Humboldt Kneeland Prairie Comment
  CAS-BOT-BC445158  Montia parvifolia W. R. Dudley 1899-1-1 s.n. Humboldt Trinidad Head Comment
  UC7878  Montia parvifolia Harley P. Chandler May, 1901 1261 Humboldt North Coast Ranges, Redwood Belt Redwood Belt; North Coast Ranges, Redwood Belt 152 Comment
  UC83800  Montia parvifolia Harley P. Chandler May, 1901 1261 Humboldt North Coast Ranges, Redwood Belt Redwood Belt; North Coast Ranges, Redwood Belt 152 Comment
  CAS-BOT-BC260573  Muhlenbergia filiformis Joseph P. Tracy 1932-7-14 10544 Humboldt Klamath Mountains. At Corral Prairie 1524 Comment
  HSC12417  Myosotis sylvatica D. Santana 1970-11-15 115 Humboldt Near Fickle Hill Rd. and 7th St. Comment
  HSC63980  Myosotis sylvatica J. P. Smith 1973-5-26 6855 Humboldt Scotia Bluffs along the Eel River near Rio Dell Comment
  HSC13475  Myriophyllum sibiricum R. L. Jarvis 1962-4-29 24 Humboldt Clam Beach Lagoons, .5 mi. S of Little River on Hwy. 101 0 Comment
  UC535743  Narthecium californicum Eleanor Armstrong 1934-1 1176 Humboldt Patricks Point Comment
Read comments Dec 5 2007
  RSA10034  Nassella lepida Joseph P. Tracy 1933-5-20 12247 Humboldt Mattole Valley, near Petrolia 152 Comment
  UC1152040  Nassella pulchra A. H. Murphy 1951-3-30 Humboldt along roadside near Mattole River Grange Hall; Mattole Valley Comment
  JEPS79940  Navarretia Joseph P. Tracy 1937-7-19 15464 Humboldt Larrabee Valley Northern Coast Ranges, Larrabee Valley 701 Comment
  UC1198526  Navarretia atractyloides Joseph P. Tracy 1933-7-9 12645 Humboldt Willow Creek Trinity River Valley 152 Comment
  HSC54536  Navarretia capillaris Overton, Butler 1979-7-23 9487 Humboldt Near Titlow Hill, close to the town of Willow Creek. 1280 Comment
  HSC98519  Navarretia divaricata subsp. divaricata Cara Witte 2007-6-7 235 Humboldt Brays Opening on National Forest 1. 1/2 mile north of intersection with 4N38. 1375 Comment
  JEPS70319  Navarretia intertexta Joseph P. Tracy 1898-7-14 91 Humboldt near Hydesville Comment
  RSA43882  Navarretia intertexta H. M. Pollard 1948-7-18 s.n. Humboldt Near Orleans. Comment
  POM208984  Navarretia intertexta Lincoln Constance 1934-5-27 697 Humboldt Sandbar of south fork of Eel River at Dyerville bridge 43 Comment
  UC1222713  Navarretia intertexta subsp. intertexta Joseph P. Tracy 1950-6-25 18899 Humboldt 3 mi s Burr Valley (near the Sprosten Place, on the road to the Albee Place) Comment
  JEPS70369  Navarretia leucocephala subsp. bakeri Joseph P. Tracy 1928-6-24 8476 Humboldt between Middle Yager Creek and North Yager Creek (East Ranch) 762 Comment
  POM92408  Navarretia squarrosa L. R. Abrams 1922-6-25 8239 Humboldt 2 miles south of Fortuna Comment
  SEINET10873102  Nemacladus capillaris Tracy 1908-6-27 TRACY 2842 Humboldt Northwest slope of Buck Mountain 1219 Comment
  SEINET3156479  Nemophila heterophylla D. E. Anderson 1965-5-8 3650 Humboldt About 3 miles N of Willow Creek along road on E side of Trinity River. Comment
  JEPS1883  Nemophila menziesii var. atomaria Joseph P. Tracy 1932-5-10 9928 Humboldt Bear River Ridge , Bear River Ridge (Northern Coast Ranges) 609 Comment
  UC163963  Nemophila menziesii var. atomaria Joseph P. Tracy 1906-5-6 2445 Humboldt near Hydesville; near Hydesville 60 Comment
  HSC32319  Nemophila parviflora D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5652 Humboldt Senteney Rock, a large barren Franciscan Rock along Swayback Ridge. Comment
  UC146186  Nemophila parviflora Joseph P. Tracy 1908-6 2726 Humboldt opposite Buck Mountain (Valley of Van Duzen River); Northern Coast Ranges, Valley Van Duzen River 304 Comment
  CAS-BOT-BC219410  Nemophila parviflora Alice Eastwood; John Thomas Howell 1937-6-24 4864 Humboldt Road to Horse Mt. Comment
  UC34955  Nicotiana attenuata Chesnut and Drew 1888-7-23 Humboldt Hyampon Comment
  CAS-BOT-BC60563  Noccaea fendleri subsp. glauca Lincoln Constance; Reed C. Rollins 1942-5-12 2887 Humboldt Klamath-Siskiyou Region. Klamath River 7 miles northeast of Weitchpec. 121 Comment
  SEINET178324  Notholcus mollis Joseph P. Tracy 1914-9-13 4626 Humboldt Gutters and wet places along streets. 61 Comment
  UCD110194  Notholithocarpus densiflorus S. P. Lynch 1975-6-9 1371 Humboldt ca. 20.4 mi. E of Arcata on Hwy. 299, heading towards Willow Creek. Comment
  UCD110212  Notholithocarpus densiflorus Joseph P. Tracy 1948-9-20 18224 Humboldt Willow Creek Canyon, along Trinity Highway. 457 Comment
  RSA0013605  Nuphar lutea subsp. polysepala C. B. Wolf 1937-9-14 9353 Humboldt Town of Blue Lake. 15 Comment
  RSA0013607  Nuphar lutea subsp. polysepala C. B. Wolf 1937-9-9 9309 Humboldt 1 mi. so. of Capetown on road to Cape Mendocino. 91 Comment
  HSC16162  Nuphar polysepala D. B. Bader 1963-3-29 5 Humboldt Second of the Clam beach lagoons, W of Hwy. 101 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
  JEPS11312  Nuttallanthus texanus Joseph P. Tracy 1918-5-5 4921 Humboldt Ocean Beach at Humboldt Bay Ocean Beach; Northern Coast Region, Humboldt Bay, Ocean Beach Comment
  UC902146  Oemleria cerasiformis Joseph P. Tracy 1946-5-30 17550 Humboldt Carlotta; flat by old Strong's District School House, 5 mi e of town 60 Comment
  CDA38173  Oenothera villosa subsp. strigosa E. C. Whitney 1968-6-26 s.n. Humboldt 1440 Carson Woods Road. 0 Comment
  UC1199307  Oreostemma alpigenum var. andersonii Joseph P. Tracy 1937-8-12 15632 Humboldt Snow Camp, in and around meadow Snow Camp 1402 Comment
  UC1215534  Orobanche californica subsp. californica D. E. Anderson 1962-8-17 2287 Humboldt Big Lagoon County Park. Comment
  CAS-BOT-BC502775  Orobanche californica subsp. californica J. Clausen 1932-9-18 690 Humboldt About 5 mi S of Cape Mendocino Lighthouse Comment
  UC585980  Orobanche uniflora subsp. occidentalis Joseph P. Tracy 1935-7-28 14321 Humboldt Head of Devil's Hole. Trinity Summit. Comment
  CHSC97962  Osmorhiza berteroi Kaylea Eickhoff; Cara M. Witte 2005-6-10 7 Humboldt Coldspring Camp, 7.4 miles south of Hwy. 299 on NF1. UTM 0439771, 4520563. 1370 Comment
  HSC16696  Oxalis corniculata J. E. Lankila 1962-4-14 5 Humboldt W bank of Eel River across from Shively ca. 700 feet N of Bear Creek. Comment
  CHSC24885  Oxalis oregana W. A. Vaccaro 1976-4-4 1 Humboldt Ca. 300 yds. NE of int. of Cedar St. and W. St., Cutten. 45 Comment
  CHSC32846  Oxalis oregana Lora L. Anderson 1981-4-25 3 Humboldt Ca. 1/2 mi s of Redwood Creek, 4 mi n on Redwood Valley Rd. off hwy 299 w 16 mi ne of Arcata. 457 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
  HSC16709  Oxalis oregana D. E. Anderson 1963-2-9 2366 Humboldt S of Kneeland on Rd. to Brigeville Comment
  UC1103421  Oxalis oregana Joseph P. Tracy 1926-7-5 7721 Humboldt near Redwood House (head of Grizzle Creek, towards South Yager); Northern Coast Ranges 609 Comment
  UC1103426  Oxalis oregana Joseph P. Tracy 1913-6-25 4344 Humboldt opposite Buck Mt. (Dinsmore's ranch, in the valley of Van Duzen River); Northern Coast Ranges 762 Comment
  SEINET516268  Oxalis pes-caprae Vernon H. Oswald 1998-4-16 8917 Humboldt Samoa Dunes Recreation Area at the south tip of the North Spit of Humboldt Bay. Comment
  UC725500  Oxalis trilliifolia A. A. Heller 1923-7-10 13787 Humboldt Humboldt Camp between Scotia and Pepperwood Comment
  CAS-BOT-BC318158  Packera bolanderi var. bolanderi Volney Rattan 1878-1-1 s.n. Humboldt unspecified Comment
  POM204618  Panicum acuminatum var. acuminatum A. S. Hitchcock 1915-7-13 527 Humboldt Eureka Comment
  UC212875  Panicum acuminatum var. acuminatum Joseph P. Tracy 1920-8-15 5356 Humboldt Klamath River Bluff Creek; Northern Coast Ranges, Klamath River at Bluff Creek 152 Comment
  UC247375  Panicum acuminatum var. acuminatum A. S. Hitchcock 1915-7-13 527 Humboldt Eureka Comment
  UC526837  Panicum acuminatum var. acuminatum Joseph P. Tracy 1925-7-5 7168 Humboldt High Prairie Bald Mountain (on Bald Mountain); Northern Coast Ranges, Bald Mountain 1066 Comment
  HSC23305  Papaver somniferum W. Wood Oct 1971 Humboldt McKinleyville Comment
  UC1103409  Parapholis incurva Joseph P. Tracy 1950-6-17 18833 Humboldt Eureka Slough Eureka; Eureka Slough 3 Comment
  UC1103787  Parapholis incurva Joseph P. Tracy 15871 Humboldt Samoa Comment
  HSC12783  Parentucellia viscosa M. J. Athey 1970-10-10 6 Humboldt Along old road to Trinidad, 0.5 mi. N of Moonstone Beach, Trinidad Comment
  UC249859  Paspalum distichum Joseph P. Tracy 1924-8-31 6842 Humboldt Klamath River at Bluff Creek; Northern Coast Ranges, Klamath River at Bluff Creek 91 Comment
  HSC98075  Paxistima myrsinites Cara Witte 2007-7-12 525 Humboldt Forest Service Road 5N10C. Approximately 1 mile south for intersection with Ammon Ridge Road. 1252 Comment
  JEPS9618  Paxistima myrsinites Joseph P. Tracy 1933-4-30 6042 Humboldt ridge n. of Willow Creek between Willow and Campbell Creeks (Brannan Mt.); Brannan Mt. 914 Comment
  UC249517  Pectocarya pusilla Joseph P. Tracy 1922-4-30 5993 Humboldt near Willow Creek; Nothern Coast Ranges, Trinity River Valley 152 Comment
  JEPS27746  Pedicularis groenlandica Joseph P. Tracy 1925-7-5 7180 Humboldt near High Prairie; Northern Coast Ranges, Bald Mountain 1066 Comment
  CAS-BOT-BC69342  Pellaea brachyptera L. B. Kildale 1930-8-3 10346 Humboldt Chaparral Mt. at Bug Creek 914 Comment
  HSC39931  Pellaea brachyptera J. O. Sawyer 1970-6-25 2294 Humboldt 1646 Comment
  JEPS26256  Penstemon anguineus Joseph P. Tracy 1919-9-18 5250 Humboldt Trinity Summit Northern Coast Ranges, Trinity Summit 1524 Comment
  BLMAR247  Penstemon anguineus Jennifer Anthony-Wheeler 1997-7-24 247 Humboldt Lacks Creek, growing NE of parking landing among regenerating forest 1219 Comment
  HSC56129  Penstemon deustus G. L. Clifton, Terry Griswold 1979-8-1 11938 Humboldt Near Mill Creek Lakes, close to the town of Hoopa. 1692 Comment
  UCR39809  Penstemon newberryi D. K. Imper 1984-6-6 s.n. Humboldt Slate Creek Butte 1372 Comment
  HSC103085  Penstemon purpusii Sydney Carothers 2014-6-22 6 Humboldt Six Rivers National Forest, Lassics Botanical Area; on saddle between Peak 1 and Mt. Lassic 1796 Comment
  JEPS7918  Penstemon rattanii Joseph P. Tracy 1921-6-12 5822 Humboldt Kneeland Prairie Northern Coast Ranges, Kneeland Prairie 762 Comment
  RSA167232  Penstemon rattanii subsp. rattanii Joseph P. Tracy 1951-6-24 19533 Humboldt Kneeland Prairie, 'Cameron Hill'. Comment
  RSA0094699  Pentagramma triangularis Ira L. Wiggins 1957-6-21 14139 Humboldt On E side of road, 1 mi. S of Garberville. Comment
  CAS-BOT-BC71615  Pentagramma triangularis subsp. triangularis Henry M. Pollard 1946-9-7 s.n. Humboldt Woodson Mine, Orleans Mt. Comment
  UC1389979  Perideridia kelloggii T. I. Chuang and B. G. Briggs 1963-4-10 5084 Humboldt 2 mi w Bridgeville Comment
  HSC35701  Perideridia kelloggii Thomas W. Nelson, B. Reinhardt 1975-7-30 2116 Humboldt E of Pilot Rock Comment
  UC183948  Perideridia kelloggii Joseph P. Tracy 1912-8-3 3967 Humboldt Dinsmore's Ranch Northern Coast Ranges, valley of Van Duzen River (opposite Buck Mt.) 762 Comment
  CHSC32972  Persicaria maculosa J. P. Smith; Advanced Taxonomy Class 1971-10-6 4950 Humboldt Dunes at the end of Murray road in McKinleyville. Comment
  UC581691  Petasites frigidus var. palmatus Joseph P. Tracy 1933-3-26 10944 Humboldt Big Lagoon 3 Comment
  UC176065  Phacelia heterophylla subsp. virgata Joseph P. Tracy 1913-6-21 4252 Humboldt opposite Buck Mountain; Northern Coast Ranges, valley of Van Duzen River 762 Comment
  UC562572  Phacelia heterophylla subsp. virgata Joseph P. Tracy 1935-7-30 14385 Humboldt near top Salmon Summit 2103 Comment
  HSC75450  Phacelia mutabilis J. O. Sawyer 1980-7-18 3587 Humboldt North Trinity Mountain Research Natural Area, north of Mill Creek Lake to Red Cap Hole. Comment
  UC1199102  Phacelia nemoralis subsp. oregonensis Joseph P. Tracy 1938-6-11 15891 Humboldt Table Bluff 91 Comment
  HSC58188  Phacelia procera G. L. Clifton, Griswold 1979-8-2 12278 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  JEPS1090  Phacelia procera Joseph P. Tracy 1932-7-12 10431 Humboldt Corral Prairie Trinity Summit 1584 Comment
  CDA20501  Phalaris arundinacea P. Haggard 2004-7-8 PDR 1285917 Humboldt North Coast; Alder Grove Park near pond. 0 Comment
  HSC10551  Phalaris arundinacea W. F. Cartwright 1965-5-20 75 Humboldt 5 mi. S of Arcata on Old Arcata Road Comment
  CDA304  Phalaris arundinacea J. W. Logan 1926-6-2 2 Humboldt Russell Ranch, Eureka. 0 Comment
  SEINET200962 Image available Phalaris californica J. P. Tracy 1912-7-25 3819 Humboldt Kneeland Prairie N Coast Ranges 762 Comment
  CAS-BOT-BC76561  Philadelphus lewisii L. R. Abrams 1918-6-16 7200 Humboldt Willow Creek Comment
  JEPS49601  Philadelphus lewisii W. L. Jepson 1902-7-1 1964 Humboldt Hupa Road Redwood Creek Comment
  UC154079  Philadelphus lewisii Joseph P. Tracy 1909-8-1 3060 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  UC154152  Philadelphus lewisii Mrs. M. H. Manning 1900-1 Humboldt Hupa Comment
  HSC20264  Philadelphus lewisii H. D. Sumner 1959-7-13 Humboldt Dirt road to Hoopa 305 Comment
  HSC26164  Phleum alpinum J. P. Smith, Steve Selva 1970-6-30 4127 Humboldt Comment
  UC181260  Phleum alpinum Joseph P. Tracy 1913-7-20 4376 1/2 Humboldt ridge between Redwood Creek and Three Creeks (on Berry's ranch); Northern Coast Ranges, btw Redwood Creek and Three Creeks 914 Comment
  UC1145045  Phleum pratense Joseph P. Tracy 1948-8-8 18089 Humboldt Iaqua; near the school house 609 Comment
  UC187279  Phleum pratense Joseph P. Tracy July, 1908 2892 Humboldt ridge between Van Duzen and Mad Rivers (near Low Gap, Humboldt and Trinity Counties); Northern Coast Ranges, between Van Duzen and Mad Rivers 914 Comment
  HSC82620  Phlox diffusa Thomas W. Nelson 1979-7-11 5004 Humboldt N Trinity Mtn. and ridge to E. 1829 Comment
  JEPS71116  Phlox gracilis Joseph P. Tracy 1930-6-21 8791 Humboldt Larrabee Valley Northern Coast Ranges 701 Comment
  UC1198560  Phlox gracilis Joseph P. Tracy 1932-5-10 9933 Humboldt Bear River Ridge Northern Coast Ranges 609 Comment
  UC906692  Phlox gracilis Joseph P. Tracy 1942-6-23 17403 Humboldt near Box Camp; Trinity Summit 1524 Comment
  UC908461  Phlox gracilis Joseph P. Tracy 1930-5-4 8691 Humboldt Larrabee Valley Northern Coast Ranges 701 Comment
  RSA609411  Phoradendron villosum Louis C. Wheeler 1958-8-7 7370 Humboldt Fort Baker Manganese Mine. Comment
  HSC90650  Phyllospadix scouleri L. Watson, J. Meninga Sep 1991 43 Humboldt Arcata, Mad River Slough and dunes Comment
  CAS-BOT-BC140585  Physocarpus capitatus Doris K. Kildale 1926-3-26 1651 Humboldt Old Fortuna Road 30 Comment
  UC1541675  Physocarpus capitatus W. K. Parks June 1932 Humboldt vicinity of Trinidad Comment
  UC249641  Physocarpus capitatus Joseph P. Tracy 1922-9-3 6110 Humboldt Klamath River at Bluff Creek 91 Comment
  JEPS46729  Picea sitchensis J. P. Tracy Feb. 1901 Humboldt Humboldt Bay Comment
  POM213420  Picea sitchensis C. B. Wolf 1930-10-28 1781 Humboldt 5 miles S Ferndale on road to Petrolia. 152 Comment
  UC1134170  Picea sitchensis H. S. Yates 1936-6-16 5659 Humboldt 1 mi sw Samoa; Eureka Quad. 6 Comment
  NY34410  Picea sitchensis N. H. Holmgren 1969-6-24 3614 Humboldt Prairie Creek Redwoods, in forest above coast near Del Norte County line Comment
  CAS-BOT-BC78288  Pinus attenuata A. A. Heller 1917-7-7 12811 Humboldt Alder Springs grade below Rattlesnake [spring] Spring Comment
  LA6061  Pinus contorta H. E. Parks; May 1931 sn Humboldt Samoa Comment
  UC72494  Pinus contorta subsp. contorta H. P. Chandler 1905-5-5 Humboldt Eureka Comment
  POM282097  Pinus contorta var. contorta H. E. Parks 1931-05 s.n. Humboldt Samoa, Pine Barrens. Comment
  CAS-BOT-BC73151  Pinus jeffreyi Joseph P. Tracy; H. E. Parks 1934-6-14 11030 Humboldt Horse Mountain 1432 Comment
  CAS-BOT-BC73115  Pinus lambertiana Doris K. Kildale 1928-10-7 6755 Humboldt Willow Creek Canyon, 7 miles from Willow Creek. Comment
  HSC55156  Pinus monticola Gilbert Muth 1979-8-1 12109 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1877 Comment
  CAS-BOT-BC136469  Piperia candida L. R. Abrams 1916-7-11 5986 Humboldt Field redacted by CAS, contact the data manager for more information Comment
  RSA273410  Piperia elegans J. D. Ackerman 1974-8-13 405 Humboldt Ca. 2 miles north of Manila, between sand dunes and Mad River Slough Comment
  UC1196432  Piperia elongata Joseph P. Tracy 1925-8-9 7224 Humboldt Salmon Creek Northern Coast Ranges, South Fork of Eel River 91 Comment
  UC1326262  Piperia elongata Milo S. Baker 1947-8-11 11946 Humboldt perhaps 10 mi e Willow (Arcata-Weaverville Hwy) Comment
  UC1196428  Piperia transversa Joseph P. Tracy 1937-7-11 15419 Humboldt Garberville 152 Comment
  HSC44656  Pityopus californicus M. A. Baker 1978-7-19 623 Humboldt Bulk Collection 136 Comment
  CAS-BOT-BC227992  Plagiobothrys Doris Kildale Gillespie 1931-6-7 10647 Humboldt South Fork Mountain, Blake Lookout 1726 Comment
  UC1222229  Plagiobothrys bracteatus Joseph P. Tracy 1948-6-13 18031 Humboldt on Larrabee Creek Road around pool (halfway between Bridgeville and Blocksburg) Comment
  UC526817  Plagiobothrys bracteatus Joseph P. Tracy 1933-7-20 12812 Humboldt near Blue Lake (in dry bed of slough); Mad River 15 Comment
  UC1562526  Plagiobothrys nothofulvus Barbara Ertter with Thomas J. Delendick 1987-5-16 6929 Humboldt ca 15 air mi e Arcata (just w of Berry Summit on Hwy 299, on n side of road); Vista Point 914 Comment
  UC177186  Plagiobothrys nothofulvus Joseph P. Tracy 1913-6-13 4115 Humboldt opposite Buck Mountain (valley Van Duzen River, Dinsmore's Ranch); Northern Coast Ranges, Valley Van Duzen River, Dinsmore's Ra 762 Comment
  UC1239572  Plagiobothrys reticulatus Joseph P. Tracy 1932-5-1 9884 Humboldt Garberville Northern Coast Ranges, Garberville 121 Comment
  UC24546  Plagiobothrys reticulatus Harley P. Chandler May, 1901 1172 Humboldt Humboldt Bay North Coast Ranges, Humboldt Bay 30 Comment
  UC526820  Plagiobothrys reticulatus Joseph P. Tracy 1933-5-20 12244 Humboldt Mattole Valley near Petrolia; Northern Coast Ranges, Mattole Valley 30 Comment
  UC206145  Plagiobothrys reticulatus Joseph P. Tracy 1913-6-22 4259 Humboldt opposite Buck Mountain (Van Duzen River Valley); Northern Coast Range, Van Duzen River Valley 762 Comment
  UC552845  Plagiobothrys reticulatus Joseph P. Tracy 1935-6-22 13957 Humboldt Holmes Flat North Coast Ranges, Holmes Flat 60 Comment
  JEPS61000  Plagiobothrys reticulatus var. reticulatus Joseph P. Tracy 1935-6-2 13923 Humboldt Big Lagoon 3 Comment
  UC1222201  Plagiobothrys scouleri Joseph P. Tracy 1950-6-29 18936 Humboldt 6 mi se Arcata; Fickle Hill 609 Comment
  UC1222206  Plagiobothrys scouleri Joseph P. Tracy 1946-5-30 17538 Humboldt 2 mi so Bridgeville 457 Comment
  UCD120950  Plagiobothrys scouleri Joseph P. Tracy 1949-6-25 18353 Humboldt Trinity Summit, meadow at Box Camp. 1463 Comment
  HSC101999  Platanthera leucostachys M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-12 898 Humboldt Patterson Meadows 1555 Comment
  HSC99474  Platanthera leucostachys K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-14 128 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  HSC59802  Platystemon californicus Clark L. Miller 1979-5-24 3151 Humboldt Samoa Dunes off Samoa Blvd. Comment
  UC1239577  Plectritis congesta Joseph P. Tracy 1901-5-18 1100 1/2 Humboldt Northern Coast Region, Ocean Beach at Humboldt Bay Ocean Beach; Northern Coast Region, Humboldt Bay, Ocean Beach Comment
  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
  HSC45385  Pleuricospora fimbriolata R. York 1978-5-20 174 Humboldt Along Bluff Creek trail. 610 Comment
  SEINET11680859  Pleuropogon refractus J. P. Tracy 1951-1 19560 Humboldt halfway between Snow Camp and Twin Lakes (at Charley Preston's old gate near the road) Comment
  RSA10113  Poa Joseph P. Tracy 1930-7-19 9053 Humboldt South Fork Mountain; along summit near Blake lookout. 1738 Comment
  UC180496  Poa annua Joseph P. Tracy 1914-5-14 4460 Humboldt Fort Seward; North Coast Ranges 121 Comment
  UC1145120  Poa bolanderi Joseph P. Tracy 1937-7-29 15581 Humboldt near McKay camp South Fork Mt 1676 Comment
  HSC99416  Poa bulbosa K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-6-28 65 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
  HSC10677  Poa confinis J. W. Johnson 1962-4-14 1250 Humboldt Arcata, Christenson Farm, Samoa Peninsula. Comment
  HSC10695  Poa douglasii J. W. Johnson 1962-5-6 1310 Humboldt W.M. Lanphere Farm, Samoa Peninsula. Comment
  UC573883  Poa douglasii H. S. Yates 1936-6-16 5650 Humboldt 1/2 mi sw Samoa; Eureka Quadrangle 6 Comment
  UC34126  Poa howellii Joseph Burtt Davy Jun 8 1899-Jun 1 1901 5360 Humboldt Harris Comment
  SEINET200573  Poa kelloggii Joseph P. Tracy 1911-6-4 3219 Humboldt Along Little River , Humbolt county , 5 miles from the coast 122 Comment
  UC1132646  Poa kelloggii H. L. Person 1932-5-11 Humboldt near Arcata; Eureka Quadrangle Comment
  UC525619  Poa kelloggii Joseph P. Tracy 1926-5-22 7504 Humboldt Prairie Creek; Northern Coast Ranges 152 Comment
  UCD90523  Poa kelloggii Harley P. Chandler 1901-5-1 1183 Humboldt Humboldt Bay. 30 Comment
  RSA296739  Poa macrantha J. P. Smith, Thomas W. Nelson 1977-6-30 9223 B Humboldt Samoa Peninsula just east of the drag strip. Comment
  UCD91801  Poa palustris A. Murphy 1950-5-1 s.n. Humboldt Ferndale area. Comment
  HSC26535  Poa pratensis J. P. Smith 1971-10-9 5001 Humboldt Banks and flood plain of the Mad River above the fish hatchery. Comment
  HSC39722  Poa pratensis D. E. Anderson, J. P. Smith 1971-6-28 - 1254 Humboldt 2.5 mi. S of Blue Lake along the Mad River Comment
  HSC10789  Poa secunda subsp. secunda J. P. Tracy 1927-6-12 8143 Humboldt Horse Mtn. 1524 Comment
  HSC40518  Poa secunda subsp. secunda Thomas W. Nelson, Jane P. Nelson 1976-6-16 2743 Humboldt Just W of Alder Springs. 1524 Comment
  UC1152045  Poa secunda subsp. secunda Joseph P. Tracy 1951-6-26 19543 Humboldt 2 mi w Snow Camp (at Beck's Place, Hydesville) 1219 Comment
  UC1256295  Poa secunda subsp. secunda R. K. Gierisch and D. H. Esplin 1969-7-1 3537 Humboldt Grouse Mt; Six Rivers Forest/Experimental Area Comment
  HSC70762  Poa trivialis R. York 1980-5-17 520 Humboldt Near Le Perron Peak 792 Comment
  SEINET201043 Image available Poaceae Joseph P. Tracy 1923-6-19 6302 Humboldt Wilder ridge. 762 Comment
  HSC17210  Polemonium carneum J. Wendell Howe 5 May [year missing] Humboldt Big Lagoon Comment
  RSA21204  Polemonium carneum C. B. Wolf 1937-8-10 9093 Humboldt Big Lagoon, so. side, w. side of Redwood Highway 6 Comment
  HSC35200  Polycarpon tetraphyllum Thomas W. Nelson 1975-11-3 2039 Humboldt 7th and H Sts., Eureka Comment
  HSC17227  Polygala californica B. D. Rogers, William J. Ferlatte 1966-6-15 2094 Humboldt Near Bridgeville Comment
  HSC72626  Polygala cornuta J. P. Smith, J. O. Sawyer 1977-7-1 9226 Humboldt Six Rivers National Forest, Bluff Creek Campground. 76 Comment
  JEPS79956  Polygonum bolanderi Joseph P. Tracy 1921-8-21 5944 Humboldt near Willow Creek; Northern Coast Ranges, Trinity River Valley 152 Comment
  SEINET3405098 Image available Polygonum bolanderi Joseph P. Tracy 1921-8-21 5944 Humboldt Trinity River Valley, Near Willow Creek 152 Comment
  UC1116243  Polygonum californicum Joseph P. Tracy 1942-9-6 17305 Humboldt opposite Buck Mountain; Van Duzen River, Dinsmore's 762 Comment
  POM302977  Polygonum coccineum H. M. Pollard 1942-9-12 s.n. Humboldt Near Orleans. Comment
  UC1222470  Polygonum douglasii subsp. spergulariiforme Joseph P. Tracy 1912-7-31 3941 Humboldt Buck Mountain Northern Coast Ranges (near summit) 1676 Comment
  HSC55101  Polygonum minimum G. L. Clifton 1979-7-31 11832 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  POM160764  Polygonum minimum Joseph P. Tracy 1919-9-18 5235 Humboldt Trinity Summit Comment
  RSA191950  Polygonum paronychia Robert F. Thorne 1957-9-3 19013 Humboldt Little River Beach, few miles S of Trinidad. Comment
  SBBG1702  Polygonum paronychia H. and M. Dearing 1939-5-24 3427 Humboldt Cape Mendocino Beach Comment
  UC1198086  Polygonum persicaria Joseph P. Tracy 1932-9-16 10798 Humboldt Little River; at mouth 6 Comment
  UC205474  Polygonum polygaloides subsp. kelloggii Joseph P. Tracy 1919-9-22 5269 Humboldt Trinity Summit Northern Coast Ranges 1828 Comment
  HSC45418  Polygonum spergulariiforme Thomas W. Nelson, Jane P. Nelson 1977-8-6 3720 Humboldt Ridge between Bear and Blanket Creeks Comment
  HSC63228  Polypodium californicum M. A. Baker 1978-5-6 468 Humboldt Weitchpec Comment
  HSC74673  Polypodium californicum Gail Newton 1981-5-16 2171 Humboldt Near Bug Creek. 1228 Comment
  RSA689951  Polypodium californicum Charlotte M. Hoak 1936-8-15 104 Humboldt Patricks Point Comment
  HSC1140  Polypodium scouleri J. W. Johnson 1962-3-9 1180 Humboldt On a bank above the Hunt Lane between the gate and barn Comment
  RSA689967  Polypodium scouleri Charlotte M. Hoak 1931-7-15 s.n. Humboldt Below Big Lagoon Comment
  RSA53785  Polypogon interruptus Henry M. Pollard 1946-8-10 s.n. Humboldt South of Klamath River and east of Perch Creek, Orleans region. Comment
  UC207735  Polypogon interruptus Joseph P. Tracy 1916-9-5 4765 Humboldt 4 mi above mouth South Fork of Eel River; Northern Coast Ranges, South Fork of Eel River 60 Comment
  HSC48478  Polystichum imbricans Brad Klipfel 1974-9-17 578 Humboldt Along ridge N of Horse Mtn. Comment
  HSC12977  Polystichum munitum M. Athey, D. La Conte 1970-11-28 2 Humboldt HSU campus Comment
  JEPS299  Polystichum munitum W. L. Jepson 1934-5-7 16689 Humboldt Bull Creek Comment
  SBBG307  Polystichum munitum H. and M. Dearing 1939-5-27 3455 Humboldt Patrick's Point Comment
  CAS-BOT-BC410007  Populus X parryi Joseph P. Tracy 1932-5-1 9895 Humboldt Vicinity of Garberville 121 Comment
  RSA46732  Populus trichocarpa Doris K. Kildale 1927-5-15 3155 Humboldt Petrolia Comment
  UC1196668  Populus trichocarpa E. Ethel Tracy 1918-4-20 Humboldt Scotia Northern Coast Ranges, on Eel River (on Eel River) 30 Comment
  UC1103512  Potamogeton foliosus Joseph P. Tracy Humboldt Blue Slide on Van Duzen River 91 Comment
  HSC36290  Potamogeton natans W. C. Vinyard 1974-1 Humboldt N Clam Beach Pond Comment
  CAS-BOT-BC453909  Potamogeton pectinatus Joseph P. Tracy 1934-7-20 13462 Humboldt Big Lagoon 3 Comment
  CAS-BOT-BC143076  Potentilla anserina subsp. pacifica Annetta Carter 1934-8-17 719 Humboldt East shore of Big Lagoon, 35 miles north of Eureka 3 Comment
  HSC18724  Potentilla anserina subsp. pacifica S. J. Hawks 1965-5-14 66 Humboldt 2 mi. NW of McKinleyville Comment
  CAS-BOT-BC142024  Potentilla drummondii Joseph P. Tracy 1932-7-10 10391 Humboldt Wet meadow at Corral Prairie - Trinity Summit 1524 Comment
  HSC97614  Potentilla glandulosa subsp. glandulosa Cara Witte 2007-5-31 156 Humboldt Along National Forest Route 1. Near Kinsey Ridge. 1.25 miles north of intersection with 4N09. 1308 Comment
  HSC56432  Potentilla gracilis var. fastigiata Griswold, Butler 1979-7-12 7144 Humboldt Near Groves Prairie, close to the town of Willow Creek. 1256 Comment
  UC154515  Potentilla gracilis var. gracilis Harley P. Chandler June, 1901 1390 Humboldt Hupa Indian Reservation North Coast Ranges, , Hupa Valley (Hupa Valley) 152 Comment
  UC279095  Potentilla gracilis var. gracilis H. E. Parks 1925-6-17 Humboldt Kneeland Comment
  HSC97464  Prosartes hookeri Cara Witte 2007-5-31 149 Humboldt Road to Board Camp Mountain Lookout. Along 4N38. 1/2 mile south of intersection with National Forest 1. 1330 Comment
  HSC15478  Prosartes smithii H. E. Parks, S. T. Parks 1952-5 24452 Humboldt Spruce Cove, Trinidad 61 Comment
  CAS-BOT-BC517513  Prosartes smithii Michael A. Hanson 1990-5-21 70 Humboldt 0.5 miles (0.8 km) east of Humboldt State University Life Science Building in Arcata near a stream in Redwood Forest. Comment
  JEPS62488  Prunella vulgaris var. lanceolata Joseph P. Tracy 1940-9-26 16729 Humboldt Eureka 6 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
  RSA22550  Prunella vulgaris var. lanceolata H. E. Parks, S. T. Parks 1937-07 24052 Humboldt Spruce Cove, Trinidad. 61 Comment
  UC1196731  Prunella vulgaris var. lanceolata Joseph P. Tracy 1930-8-17 9162 Humboldt Big Lagoon; Northern Coast Region, Big Lagoon 6 Comment
  UC25637  Prunella vulgaris var. lanceolata J. Burtt Davy 1899-6-11 5443 Humboldt Hubbards; North Coast Ranges, Hubbards Comment
  UC902030  Prunella vulgaris var. lanceolata Joseph P. Tracy 1949-8-4 18421 Humboldt Mud Springs Trinity Summit; , Mud Springs 1341 Comment
  HSC55996  Prunus emarginata Overton, Butler 1979-7-31 11433 Humboldt Near Water Dog Lakes, close to the town of Hoopa 1830 Comment
  UC249638  Prunus emarginata Joseph P. Tracy 1922-9-17 6116 Humboldt North Fork Mad River, at Korbel North Fork Mad River; Northern Coast Region, , Korbel 30 Comment
  HSC94127  Prunus laurocerasus Gordon Leppig 2000-4-12 1291 Humboldt Arcata: behind Humboldt State University, W of Fern Lake 49 Comment
  CAS-BOT-BC357269  Pseudognaphalium microcephalum Joseph P. Tracy 1938-8-14 16111 Humboldt Trinity River Valley, at Willow Creek 152 Comment
  CAS-BOT-BC357446  Pseudognaphalium ramosissimum Joseph P. Tracy 1936-8-24 15169 Humboldt Fickle Hill, 6 miles Southeast of Arcata 609 Comment
  UC1223109  Pseudognaphalium ramosissimum Joseph P. Tracy 1950-9-10 19364 Humboldt foothills 1/2 mi s Cape Town (along coast road. Cape Ridge one mi e of Cape Mendecino); Cape Ridge 152 Comment
  HSC79536  Pseudognaphalium stramineum Kenneth Clark 1979-7-1 455 Humboldt Dead Man's Gulch 9 Comment
  UC582510  Pseudognaphalium stramineum Joseph P. Tracy 1937-8-3 15614 Humboldt near Blue Lake; Mad River 15 Comment
  UC1223108  Pseudognaphalium thermale Joseph P. Tracy 1942-8-30 17303 Humboldt at Willow Creek Trinity River Valley, Willow Creek 152 Comment
  CAS-BOT-BC80119  Pseudotsuga menziesii L. B. Kildale 1930-9-21 10219 Humboldt Bluff Creek trail to Fish Lake Comment
  CAS-BOT-BC80121  Pseudotsuga menziesii Doris K. Kildale 1927-2-28 2990 Humboldt Bug Creek 853 Comment
  RSA170252  Psilocarphus brevissimus Joseph P. Tracy, Francis W. Pennell 1940-7-7 16674 Humboldt Grouse Mountain. 1555 Comment
  UC1222910  Psilocarphus oregonus Joseph P. Tracy 1946-5-30 17542 Humboldt 5 mi e Carlotta (by old Strong's District School House, Riverside Park nearby) 60 Comment
  UC1223165  Psilocarphus tenellus Joseph P. Tracy 1948-6-13 18056 Humboldt 3 mi w Harris 762 Comment
  HSC1160  Pteridium aquilinum var. pubescens Gene S. Van Horn 1962-5-25 27 Humboldt 200 ft. N of main house at 250 E 17th St., Arcata 61 Comment
  HSC1165  Pteridium aquilinum var. pubescens Elrid H. Spinas 1948-6-16 67 Humboldt Horse Mtn. Comment
  HSC41289  Pteridium aquilinum var. pubescens Brad Klipfel 1974-7-27 483 Humboldt Horse Mtn. in draw to the N of the towers Comment
  SEINET3874358 Image available Pteridium aquilinum var. pubescens J. D. Ackerman 1975-9-15 744 Humboldt Above HSU, Arcata.; 0 Comment
  SEINET199671  Pteryxia terebinthina var. californica Joseph P. Tracy 1929-4-28 8549 Humboldt Trinity River Valley at Willow Creek. 152 Comment
  JEPS58845  Pyrola aphylla W. L. Jepson 1902-7-13 2023 Humboldt Willow Creek to Hupa Comment
  CAS-BOT-BC460596  Pyrola aphylla Henry M. Pollard 1944-9-8 s.n. Humboldt Orleans Mt. 1524 Comment
  CAS-BOT-BC462868  Pyrola asarifolia Volney Rattan 1878-1-1 s.n. Humboldt Unspecified Comment
  HSC55231  Pyrola picta G. L. Clifton, Griswold 1979-8-2 12432 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  UC412735  Pyrola picta Mrs. M. H. Manning 1900-1 Humboldt near Hupa Comment
  CAS-BOT-BC466036  Pyrola picta Volney Rattan 1878-1-1 s.n. Humboldt Unspecified Comment
  HSC98038  Pyrola picta Cara Witte 2007-7-17 532 Humboldt National Forest 1. 2 miles south from intersection with 5N27. 1456 Comment
  CAS-BOT-BC62670  Quercus chrysolepis Doris K. Kildale 1926-9-5 2640 Humboldt on trail between Red Peaks & Signal Peak Lassiks Peaks 1706 Comment
  HSC54647  Quercus chrysolepis Overton, Butler 1979-7-25 9847 Humboldt Near Ammon Creek, close to the town of Willow Creek. 671 Comment
  UC1196530  Quercus chrysolepis Joseph P. Tracy 1935-7-14 14066 Humboldt ridge back of Clear Lake; North Coast Ranges, Grouse Mountain 1524 Comment
  HSC48346  Quercus garryana Maralyn O'Meara 1974-7-11 527 Humboldt Kneeland, Barry Ridge 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
  JEPS38041  Quercus kelloggii Lincoln Constance 1934-5-29 738 Humboldt Upper Look Prairie South Fork Eel River, Bull Creek Region 365 Comment
  UC1196535  Quercus vacciniifolia Joseph P. Tracy 1947-7-9 17844 Humboldt Horse Mountain 1432 Comment
  CAS-BOT-BC104665  Quercus wislizeni Doris K. Kildale 1927-3-1 3107 Humboldt Fort Seward 106 Comment
  CAS-BOT-BC379197  Ranunculus aquatilis var. aquatilis C. C. Harris; S. K. Harris 1936-6-12 3363 Humboldt open woods, prairies and ledges on Chalk Mountain near Bridgeville Comment
  UC1103012  Ranunculus flammula Joseph P. Tracy 1936-6-28 15023 Humboldt Lake Prairie Bald Mountain 1066 Comment
  UC552300  Ranunculus flammula Joseph P. Tracy 1934-7-13 13390 Humboldt Dow's Prairie 60 Comment
  POM256479  Ranunculus flammula var. ovalis Joseph P. Tracy 1937-7-17 15436 Humboldt Eureka. 46 Comment
  HSC96199  Ranunculus occidentalis Andrew Byers, Stuart E. Richardson III 2005-6-3 1 Humboldt 19.3 mi. S of Hwy. 299 on NF1 1205 Comment
  JEPS55004  Ranunculus occidentalis Lincoln Constance 1934-5-24 645 Humboldt Bull Creek Region South Fork Eel River 121 Comment
  UC1196254  Ranunculus orthorhynchus var. orthorhynchus J. P. Tracy 1901-5-12 1075 Humboldt Immediate vicinity of Eureka 0 Comment
  RSA20857  Ranunculus orthorhynchus var. platyphyllus Carl B. Wolf 1937-6-18 8897 Humboldt 1/2 miles E of Alton. 21 Comment
  CHSC68500  Ranunculus repens var. repens Vernon H. Oswald 1997-4-10 8316 Humboldt Clam Beach between Arcata and Trinidad. On the bank of a creek on the back beach. 30 Comment
  HSC39445  Ranunculus repens var. repens Linda M. Barker 1976-6-1 1555 Humboldt 3 mi. W of Arcata Comment
  UC1196270  Ranunculus uncinatus Joseph P. Tracy 1916-5-7 4687 Humboldt Eureka Northern Coast Ranges 0 Comment
  RSA32664  Rhamnus californica Doris K. Kildale 1927-7-3 s.n. Humboldt Willow Creek Flat. Comment
  RSA7790  Rhamnus californica Carl B. Wolf 1927-8-30 1249 Humboldt 3 miles S of Thorn3 miles S of Tom's Place Comment
  UC668157  Rhamnus californica Joseph P. Tracy 1934-7-9 13358 Humboldt Dobbyn Creek 152 Comment
  UC165816  Rhamnus californica subsp. californica Joseph P. Tracy 1909-7-31 3037 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  UC1121915  Rhamnus purshiana G. T. Nordstrom Jul 1937 1424 Humboldt 2.5 mi ne Orick; Orick Quad. 152 Comment
  HSC37364  Rhododendron macrophyllum Gary S. Lester, Roger L. Yearout, Judith G. Dickson 1974-7-24 496 Humboldt Along Lost Man Creek. 38 Comment
  UC154176  Rhododendron macrophyllum Mrs. M. H. Manning 1900-7 Humboldt near Hupa Comment
  CHSC19505  Rhododendron neoglandulosum Norman Dennis 1965-6-3 143 Humboldt Big Lagoon County Park, southwest corner of Big Lagoon. Comment
  HSC100478  Rhododendron occidentale Carl C. Marshall Apr 1886 186 Humboldt Vicinity of Humboldt Bay. Comment
  UC1543140  Rhododendron occidentale Frank Gould, Kay Beach 1940-5-5 1041 Humboldt along coast near Trinidad Comment
  HSC35751  Rhododendron occidentale var. paludosum Thomas W. Nelson, Jane P. Nelson, James Nelson 1975-7-15 1995 Humboldt French Camp, Bald Hills. Comment
  UC34924  Rhus trilobata Chestnut and Drew 1888-7-23 Humboldt Hyampom Comment
  CAS-BOT-BC433145  Ribes Doris K. Kildale 1928-7-1 5306 Humboldt French Camp on Orick-Martin's Ferry road 853 Comment
  HSC58162  Ribes binominatum G. L. Clifton, Griswold 1979-8-2 12226 Humboldt Near Oregon Creek, close to the town of Hoopa 1663 Comment
  POM184793  Ribes binominatum Joseph P. Tracy 1932-7-13 10487 Humboldt Trinity Summit. 1524 Comment
  CAS-BOT-BC92884  Ribes bracteosum Greg de Nevers 2001-4-19 12258 Humboldt Prairie Creek, Redwoods State Park. 91 Comment
  HSC20276  Ribes bracteosum S. S. Stutz 1963-5-18 53 Humboldt 7 mi. SE of Arcata on Fickle Hill Rd. Comment
  HSC97305  Ribes divaricatum var. pubiflorum M. Mesler 2007-3-14 740 Humboldt Blue Lake, Hatchery Rd., 0.6 mi. S of West End Rd. 44 Comment
  UC902060  Ribes divaricatum var. pubiflorum Joseph P. Tracy 1945-5-10 17507 Humboldt on original Ricks Prairie Eureka 45 Comment
  HSC70746  Ribes lobbii R. York 1980-5-17 537 Humboldt Near Le Perron Peak 1066 Comment
  SEINET3121265 Image available Ribes lobbii Joseph P. Tracy 1942-6-23 17234 Humboldt Trinity Summit, near Box Camp 1524 Comment
  HSC44292  Ribes menziesii Barbara Kelly 1977-4-23 306 Humboldt 2.5 mi. S of Shelter Cove Rd., S Fork of Bear Creek at Wailaki Campground 561 Comment
  RSA0021771  Ribes menziesii Doris K. Kildale 1927-2-22 s.n. Humboldt Bucksport, near Eureka. Comment
  UC161562  Ribes roezlii Joseph P. Tracy 1911-7-5 3309 Humboldt near mouth Willow Creek; Northern Coast Ranges, Trinity River 152 Comment
  JEPS79967  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
  UC667061  Ribes roezlii var. cruentum Joseph P. Tracy 1934-3-11 13153 Humboldt French Camp Ridge 1066 Comment
  RSA0024586  Ribes roezlii var. cruentum Robert F. Thorne, P. C. Everett 1965-8-5 35142 Humboldt 5.2 miles N of junction of Horse Mt. and Shelter Cove Roads. 457 Comment
  HSC100094  Ribes roezlii var. roezlii J. P. Smith, J. O. Sawyer 2010-3-22 12711 Humboldt Along Hwy. 36, E of Dinsmore. 780 Comment
  HSC97476  Ribes roezlii var. roezlii Cara Witte 2007-5-23 101 Humboldt Near Grouse Mtn. Along 4N32. Approximately 0.5 mi. S of intersection with 5N04 and 4N32E. 1398 Comment
  CAS-BOT-BC212522  Ribes sanguineum C. V. Piper 1921-5-22 s.n. Humboldt Eureka Comment
  LA205509  Ribes sanguineum Carl Epling; William Robison 1935-7-22 sn Humboldt Patrick's Point Comment
  RSA0019528  Ribes sanguineum Peter H. Raven, Richard Snow 1958-7-20 13644 Humboldt 1.1 miles south of junction of Friday Ridge Road on Titlow Hill Road, near Grouse Ridge. Comment
  HSC99358  Ribes sanguineum var. sanguineum K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-6-24 7 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  HSC44194  Ribes viscosissimum Thomas W. Nelson, Jane P. Nelson 1977-6-19 3489 Humboldt Along W side of road to Goat Hill 1616 Comment
  UC1222908  Rigiopappus leptocladus Joseph P. Tracy 1948-6-13 18059 Humboldt 3 mi w Harris 762 Comment
  RSA135397  Romanzoffia californica Volney Rattan 1882-06 s.n. Humboldt Kneeland Prairie. Comment
  HSC45604  Romanzoffia californica Diane L. Reed 1978-5-7 69 Humboldt E fork of Willow Creek, 34 mi. from US 101 on state Hwy. 299 Comment
  CAS-BOT-BC74507  Rorippa curvisiliqua Doris K. Kildale 1929-5-26 9140 Humboldt Klamath River at Orleans. 152 Comment
  UC902154  Rosa Joseph P. Tracy 1949-8-7 18438 Humboldt near Box Camp; Trinity Summit 1524 Comment
  UC667042  Rosa californica Joseph P. Tracy 1933-6-25 12617 Humboldt Camp Grant Eel River (along river) 60 Comment
  UC527555  Rosa eglanteria C. B. Wolf 1931-8-28 2363 Humboldt 1/8 mi from kRohnerville on road to Fortuna Comment
  BLMAR77  Rosa gymnocarpa Jennifer Anthony-Wheeler 1994-6-2 77 Humboldt IAQUA, growing along logging rd 3/4mi from beginning of rd 853 Comment
  CAS-BOT-BC146487  Rosa gymnocarpa Doris K. Kildale 1927-5-13 3176 Humboldt Redwood Creek at Berry's 289 Comment
  UC1199037  Rosa gymnocarpa var. serpentina Joseph P. Tracy 1939-8-16 16404 Humboldt Horse Mountain 1432 Comment
  CAS-BOT-BC146833  Rosa nutkana M. S. Jussel 1931-5-2 s.n. Humboldt 6 miles from Garberville Comment
  HSC19622  Rosa nutkana W. R. Brigham 1962-5-20 27 Humboldt Side of Old Hwy. 101, N of Big Lagoon rd. Comment
  SBBG3090  Rosa nutkana M. J. Cody 1938-7-14 Humboldt 2 mi N of Trinidad Comment
  UC902162  Rosa nutkana var. nutkana Joseph P. Tracy 1947-8-10 17883 Humboldt 2 mi s of town Field's Landing 6 Comment
  SEINET11912081  Rosa pinetorum F. H. Utech, Sato, T.; Ohara, M. 1990-1 90 -312 Humboldt Six Rivers National Forest, 0.5 mi S of CA 199 on French Hill Road 150 Comment
  UC667036  Rosa pisocarpa Joseph P. Tracy 1934-7-18 13416 Humboldt Grouse Mt. 1432 Comment
  JEPS44732  Rubus lasiococcus Joseph P. Tracy 1932-7-16 10640 Humboldt in fir woods near Corral Prairie; Klamath Mountains, Trinity Summit, nr Corral Prairie 1524 Comment
  CAS-BOT-BC147248  Rubus parviflorus Mrs. A. H. Rodda 1932-5-22 s.n. Humboldt Redwood Highway Comment
  CHSC19737  Rubus parviflorus R. J. Vernimen 1963-5-11 51 Humboldt Clam Beach Lagoons, 10 miles N. of Arcata. Comment
  HSC89428  Rubus parviflorus P. A. Daly 1984-5-6 1 Humboldt Trinidad Head 61 Comment
  SEINET10542893  Rubus procerus Charlene A. Bennett 1976-8-6 Bennett 485 Humboldt By hwy 101, n side of orick. Rocky area, densely forested by river. Flowers Pink 30 Comment
  CHSC13518  Rubus spectabilis A. R. Morrison 1974-4-27 Humboldt Ca. 1.5 mi. off Hwy. 101 on Westhaven Rd., Trinidad. 45 Comment
  CHSC61999  Rubus spectabilis J. R. Biddison 1993-4-6 15 Humboldt Elk Prairie campground, Prairie Creek Redwoods State Park. Next to creek. 30 Comment
  HSC19690  Rubus spectabilis K. P. St. John 1965-4-3 8 Humboldt Dry Lagoon State Park, 13 mi. N of Trinidad Comment
  HSC70704  Rubus ursinus Gail Newton 1980-7-14 1546 Humboldt Near Deadman Ridge 1097 Comment
  HSC70847  Rubus ursinus M. A. Baker 1980-6-7 1829 Humboldt Near Ammon Creek 732 Comment
  JEPS47291  Rubus ursinus W. L. Jepson 1932-8-8 16528 Humboldt near Weatt; near Weatt 304 Comment
  RSA89568  Rubus vitifolius Philip A. Munz 1954-7-23 19865 Humboldt 5 miles SE of Carlotta Comment
  UC1223160  Rudbeckia occidentalis Joseph P. Tracy 1948-9-12 18204 Humboldt meadow at Box Camp; Trinity Summit 1463 Comment
  RSA20785  Rudbeckia occidentalis C. B. Wolf 1937-8-13 9250 Humboldt North Coast Range, 11 miles E of Hoopa Valley on new road towards Trinity Summit 1524 Comment
  UC55519  Rumex Joseph Burtt Davy 1899-7-30 6170 Humboldt Ferndale Comment
  HSC102053  Rumex acetosella M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-13 958 Humboldt Forest edge surrounding Patterson Meadows 1566 Comment
  HSC44478  Rumex acetosella Brad Klipfel 1973-7-15 194 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  UC153937  Rumex conglomeratus J. P. Tracy 1910-10-1 3164 Humboldt immediate vicinity Eureka 0 Comment
  HSC34704  Rumex crispus Thomas W. Nelson 1974-7-20 1700 Humboldt McKeown Ranch N of Dinsmore Comment
  UC672923  Rumex maritimus Joseph P. Tracy 1940-10-5 16741 Humboldt Mouth of Little River 6 Comment
  CAS-BOT-BC433647  Rumex obtusifolius Henry M. Pollard 1943-8-1 s.n. Humboldt Orleans Comment
  HSC9564  Rytidosperma penicillatum True Hoyle 1967-6-24 26167 Humboldt 20 mi. S of Arcata near Little Salmon Creek on the Marvin Stapp Ranch 46 Comment
  RSA301862  Rytidosperma penicillatum Joseph P. Tracy 1942-6-28 17267 Humboldt [Unspecified] Comment
  UCD92352  Rytidosperma penicillatum Joseph P. Tracy 1941-8-17 16994 Humboldt at 'Hungry Hollow' on Bald Mt. 762 Comment
  UC668107  Sagina apetala Joseph P. Tracy 1932-5-1 9839 Humboldt along Van Duzen R. Alton; North Coast Ranges, Van Duzen R. 30 Comment
  UC205455  Sagina procumbens Joseph P. Tracy 1920-6-6 5338 Humboldt Freshwater Creek near Wrangletown; Northern Coast Ranges, around Humboldt Bay, Freshwater Creek 30 Comment
  CHSC31321  Salicornia virginica Mark Stopher 1980-6-4 85 Humboldt Along tidal creek, near Elk River bridge Hwy 101. 1 Comment
  CAS-BOT-BC132707  Salix A. T. Whittemore 1979-4-5 79 -013 Humboldt Arcata, along Alliance Road immediately north of Arcata High School 6 Comment
  UC1196669  Salix eastwoodiae Joseph P. Tracy 1935-7-26 14266 Humboldt meadows at Water Dog Lake; Trinity Summit 1828 Comment
  JEPS14753  Salix exigua Joseph P. Tracy 1932-6-14 10151 Humboldt at Willow Creek Trinity River Valley; Northern Coast Region 152 Comment
  UC1196600  Salix exigua var. hindsiana Joseph P. Tracy 1932-7-31 10294 Humboldt along Eel R. from S. Fork to Scotia (Larrabee Creek); Northern Coast Ranges 60 Comment
  UC1196605  Salix exigua var. hindsiana Joseph P. Tracy, C. R. Ball, and H. E. Parks 1932-5-17 10096 Humboldt Trinity R. opposite Willow Creek; North Coast Ranges 152 Comment
  UC526711  Salix exigua var. hindsiana H. E. Parks and Joseph P. Tracy 1934-7-25 11090 Humboldt at Willow Creek Trinity R. Valley; Northern Coast Ranges, Trinity R. Valley 152 Comment
  CAS-BOT-BC106858  Salix hookeriana Carleton R. Ball; Harold E. Parks; Joseph P. Tracy 1932-5-11 01207 Humboldt Little River Lagoon, 4 1/2 miles south of Trinidad Comment
  CAS-BOT-BC106863  Salix hookeriana W. J. Ferlatte 1967-6-13 1121 Humboldt Moonstone coastal bluff 30 Comment
  CAS-BOT-BC107721  Salix hookeriana Joseph P. Tracy 1936-2-23 14773 Humboldt Fortuna, on bank of Eel River 15 Comment
  CAS-BOT-BC107768  Salix hookeriana Harold E. Parks; Carleton R. Ball; Joseph P. Tracy 1932-5-11 1223 Humboldt In pine barrens near the coast, 1 mile north of Samoa. Comment
  HSC90433  Salix hookeriana Jean Hanson 1980-3-8 18 Humboldt Indian (Gunther) Island, Humboldt Bay, Eureka, W end of island Comment
  LA208758  Salix hookeriana Harold E. Parks; August 1931 1053 Humboldt Little River Lagoon, Trinidad; at sea level Comment
  RSA475258  Salix hookeriana Lyman D. Benson 1928-7-5 370 Humboldt Garberville. Seward N Coast mtn range. S Fork Eel River. 244 Comment
  UC1225776  Salix hookeriana Joseph P. Tracy 1948-4-4 17959 Humboldt sand dunes near Samoa; Humboldt Bay 6 Comment
  UC249537  Salix hookeriana Joseph P. Tracy 1922-3-26 5984 Humboldt Fieldbrook Northern Coast Region 60 Comment
  UC275496  Salix hookeriana Joseph P. Tracy 1925-10-11 7279 Humboldt near Kneeland Prairie (near Loren Frost place on Kneeland Rd.); Northern Coast Ranges 609 Comment
  UC481278  Salix hookeriana Harold E. Parks 1931-8-1 1053 Humboldt Little River Lagoon Comment
  UC490456  Salix hookeriana Joseph P. Tracy 1932-5-10 9954 Humboldt Mattole R. near Petrolia; North Coast Region, Mattole R. 15 Comment
  UC490465  Salix hookeriana Joseph P. Tracy 1932-9-10 10767 Humboldt Mattole R. near Petrolia; North Coast Region, Mattole R. 15 Comment
  UC490472  Salix hookeriana Joseph P. Tracy 1932-9-5 10771 Humboldt Mattole River near Petrolia; North Coast Region 15 Comment
  UC492335  Salix hookeriana Harold E. and Susan T. Parks 1932-4-10 1102 Humboldt Little River Lagoon Trinidad Comment
  UC492344  Salix hookeriana Harold E. and Susan T. Parks 1932-4-10 1103 a Humboldt Little River Lagoon Trinidad Comment
  UC504053  Salix hookeriana Jim Davis Apr 25 1933-Apr 27 1933 5 Humboldt around Eureka Comment
  UC512086  Salix hookeriana Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-11 1221 Humboldt 1 mi n Samoa (in pine barrens near the coast) Comment
  CAS-BOT-BC107583  Salix lasiolepis Joseph P. Tracy; Carleton R. Ball; Harold E. Parks 1932-5-13 1254 Humboldt Floodplain of Mad River at Engelhart gravel pit, 2 miles east of Redwood Highway and above Blue Lake Road Comment
  CAS-BOT-BC107601  Salix lasiolepis Joseph P. Tracy; Harold E. Parks 1933-3-19 11006 Humboldt On Van Duzen River, 2 miles west of Bridgeville 228 Comment
  CAS-BOT-BC107610  Salix lasiolepis Joseph P. Tracy; Harold E. Parks; Carleton R. Ball 1932-5-13 1253 Humboldt On gravelly floodplain of Mad River at Engelhart gravel pit, 2 miles east of Redwood Highway and above Blue Lake Road Comment
  HSC43415  Salix lasiolepis R. Sutherland 1978-2-18 2 .18278 Humboldt S side mouth of Mattole River 11 Comment
  HSC96359  Salix lasiolepis Gordon Leppig 1999-4-15 1116 Humboldt Big Lagoon County Park, Big Lagoon Bog, W fen edge 3 Comment
  UC1196619  Salix lasiolepis Joseph P. Tracy 1933-7-20 12807 Humboldt Mad River, near Blue Lake 15 Comment
  UC469424  Salix lasiolepis Joseph P. Tracy 1931-8-16 9614 Humboldt vicinity of Garberbille; Northern Coast Ranges 121 Comment
  UC471110  Salix lasiolepis Joseph P. Tracy 1931-3-31 9327 Humboldt at Berry's Redwood Creek; Northern Coast Ranges, Redwood Creek 274 Comment
  UC481181  Salix lasiolepis Harold E. Parks 1931-8-25 1059 Humboldt on Van Duzen R. Blue Slide; Van Duzen R., Blue Slide 90 Comment
  UC504027  Salix lasiolepis Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-17 1320 Humboldt Redwood Creek, at Berry's, on Trinity Highway Comment
  UC504030  Salix lasiolepis Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-17 1321 Humboldt Redwood Creek, at Berry's, on Trinity Highway Comment
  UC506378  Salix lasiolepis Joseph P. Tracy 1932-10-2 10858 Humboldt near Bair's; Northern Coast Ranges, Redwood Creek 213 Comment
  UC506385  Salix lasiolepis Joseph P. Tracy 1932-6-4 10130 Humboldt Bridgeville Northern Coast Ranges 228 Comment
  UC506404  Salix lasiolepis Joseph P. Tracy 1932-10-8 10866 Humboldt Berry's Mt. Northern Coast Ranges (on Trinity Hwy) 762 Comment
  UC512036  Salix lasiolepis Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-17 1324 Humboldt e Redwood Creek (w slope of mt., on Trinity Hwy); Berry's Mountain 762 Comment
  UC512042  Salix lasiolepis Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-17 1322 Humboldt at Berry's Redwood Creek (on Trinity Hwy.) 274 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-BC107287  Salix lasiolepis var. bigelovii Joseph P. Tracy 1933-3-19 10934 Humboldt along Van Duzen R. 228 Comment
  CAS-BOT-BC107403  Salix lasiolepis var. lasiolepis Doris K. Kildale 1928-4-29 5958 Humboldt Redwood Creek at Berry's 289 Comment
  POM214862  Salix lasiolepis var. sandbergii Joseph P. Tracy 1933-4-2 10959 Humboldt Berry's Mountain. On Trinity Hwy. E of Redwood Creek. 762 Comment
  CAS-BOT-BC128202  Salix lucida Doris K. Kildale 1927-3-20 2926 Humboldt Stevens Grove - South Fork of Eel River near Miranda Comment
  HSC99455  Salix lucida subsp. lasiandra K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-7 107 Humboldt Near North Trinity Mtn, 11. 9 mi east of Hoopa on Big Hill Rd (8N01), at Box Camp, Six Rivers National Forest. 1372 Comment
  POM362660  Salix lucida subsp. lasiandra H. E. Parks, Susan T. Parks 1932-5-12 1150 Humboldt Near bridge at mouth of Maple Creek. Big Lagoon. Comment
  CAS-BOT-BC125614  Salix melanopsis Doris K. Kildale 1925-6-27 765 Humboldt Yager Creek - near mouth 30 Comment
  HSC20027  Salix melanopsis H. E. Parks 1931-10-15 1077 Humboldt Bishop Pine Lodge, Trinidad 75 Comment
  HSC20060  Salix melanopsis C. R. Ball, H. E. Parks, J. P. Tracy 1932-5-12 1237 Humboldt Van Duzen River at Blue Slide 91 Comment
  JEPS12953  Salix melanopsis Joseph P. Tracy 1932-5-10 9961 Humboldt Mattole River near Petrolia; Northern Coast Region 15 Comment
  POM219538  Salix melanopsis H. E. Parks 1931-10-15 1077 Humboldt Bishop Pine Lodge. Trinidad. 75 Comment
  POM362860  Salix melanopsis H. P. Bracelin 1931-5-2 283 Humboldt E of Redwood Hwy, 6km S of Alton. 20 Comment
  RSA47089  Salix melanopsis Doris K. Kildale 1926-9-19 2804 Humboldt N Fork of Eel River - near Fort Seward. At Hamann's Crossing. Comment
  UC1173600  Salix melanopsis Joseph P. Tracy 1936-10-17 15199 Humboldt 1/2 mi. e. Alton (along Van Duzen R.); North Coast Ranges, Van Duzen R. 30 Comment
  UC481265  Salix melanopsis Harold E. Parks 1931-5-28 1019 Humboldt Little River Lagoon Comment
  UC481285  Salix melanopsis Harold E. Parks 1931-5-14 960 Humboldt Van Duzen R. between Alton and Carlotta; Van Duzen R. 15 Comment
  UC481825  Salix melanopsis Mrs. H. P. Bracelin 1931-5-2 283 Humboldt 6 km. s. Alton (e. of Redwood Hwy.) 20 Comment
  UC490577  Salix melanopsis C. R. Ball, H. E. Parks and Joseph P. Tracy 1932-5-17 10095 Humboldt Trinity R. near Willow Creek; North Coast Ranges, Trinity R. 152 Comment
  UC519377  Salix melanopsis Joseph P. Tracy 1933-5-20 12258 Humboldt Mattole R. near Petrolia; North Coast Region, Mattole R. 15 Comment
  CAS-BOT-BC129136  Salix scouleriana Joseph P. Tracy 1932-7-17 10694 Humboldt Rocky exposed places, head of Devil's Hole - Trinity Summit, Klamath Mountains 1828 Comment
  UC1196696  Salix scouleriana Joseph P. Tracy 1924-1-27 6599 Humboldt along Eel R. from S. Fork to Scotia (South Fork Station); Northern Coast Ranges, Eel R. 60 Comment
  UC481272  Salix scouleriana Harold E. Parks 1931-5-28 1017 Humboldt edge of dunes Little River Lagoon Comment
  UC512016  Salix scouleriana Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-11 1227 Humboldt pine barrens near coast 1 mi. n. Samoa Comment
  POM219686  Salix sessilifolia H. E. Parks 1931-5-14 964 Humboldt Van Duzen River between Alton and Carlotta. 15 Comment
  HSC37879  Salix sitchensis Thomas W. Nelson 1976-3-22 2281 Humboldt Cooper's Gulch near Franklin Elementary School Comment
  HSC59689  Salix sitchensis Marla J. Carollo 1979-5-4 61 Humboldt Clam Beach Lagoon, near Little River Beach, adjacent to Hwy. 101 Comment
  HSC79548  Salix sitchensis Kenneth Clark 1980-3-27 548 Humboldt Creek on W slope of Dead Man's Gulch 114 Comment
  HSC90400  Salix sitchensis Jean Hanson 1980-3-8 5 Humboldt Indian (Gunther) Island, Humboldt Bay, Eureka, W end of island Comment
  JEPS14775  Salix sitchensis Joseph P. Tracy 1933-3-19 10930 Humboldt on Van Duzen River Blue Slide; Northern Coast Ranges 91 Comment
  JEPS38498  Salix sitchensis Milo S. Baker 1923-7-23 89 Humboldt Manning Creek Comment
  RSA171961  Salix sitchensis Robert F. Thorne 1957-9-2 18989 Humboldt Eel River. Burlington State Park, just S of Weott. Comment
  UC1222295  Salix sitchensis Joseph P. Tracy 1950-9-10 19365 Humboldt along coast rd. 1 mi. inland from Cape Mendocino (1/2 mi. s. of town); Foothills of Cape Ridge 60 Comment
  UC481215  Salix sitchensis Harold E. Parks 1931-5-20 995 Humboldt Mad R. Blue Lake; , Blue Lake 15 Comment
  UC506372  Salix sitchensis Joseph P. Tracy 1933-5-7 12154 Humboldt Alton to Fortuna (Eel R.); Northern Coast Region, Eel R. 15 Comment
  UC537983  Salix sitchensis Joseph P. Tracy 1934-9-22 13671 Humboldt mouth of Mad R.; North Coast Ranges, Mad R. 9 Comment
  UC1196618  Salix tracyi Joseph P. Tracy 1936-10-17 15201 Humboldt Blue Slide, on Van Duzen River 91 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
  JEPS12746  Sambucus mexicana W. L. Jepson 1932-7-24 16390 Humboldt Mail Ridge 914 Comment
  HSC34273  Sambucus nigra subsp. caerulea K. Irwin 1975-8-13 Humboldt N Trinity Mtn. Comment
  HSC58141  Sambucus nigra subsp. caerulea Gilbert Muth 1979-8-1 12164 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1677 Comment
  RSA46896  Sambucus racemosa var. arborescens Doris K. Kildale 1927-3-22 2938 Humboldt N Fork of Elk River, Humboldt County Comment
  UCSB15630  Sambucus racemosa var. racemosa 1962-6-8 Humboldt Along U.S. Highway 101, 5 miles south of Orick 30 Comment
  UC1197113  Sanicula arctopoides Joseph P. Tracy 1904-4-24 4028 Humboldt Ocean Beach at Humboldt Bay Ocean Beach; Northern Coast Region, Humboldt Bay, Ocean Beach Comment
  UC1197114  Sanicula arctopoides Joseph P. Tracy 1918-4-7 4860 Humboldt mouth of Strawberry Creek, Dow's Prairie, Northern Coast Ranges Strawberry Creek; Northern Coast Ranges, , Dow's Prairie 6 Comment
  UC205466  Sanicula arctopoides Joseph P. Tracy 1919-4-27 5136 Humboldt Ocean Beach at Humboldt Bay Ocean Beach; Northern Coast Region, Humboldt Bay, Ocean Beach Comment
  CAS-BOT-BC223251  Sanicula bipinnatifida Joseph P. Tracy 1938-7-4 15985 Humboldt Vicinity of South Yager Creek 762 Comment
  JEPS282  Sanicula crassicaulis Joseph P. Tracy 1927-5-8 7968 Humboldt facing South Fork of Eel River (Phillipsville); Phillipsville 121 Comment
  UCD127966  Sanicula crassicaulis Linda M. Barker 1976-6-1 1540 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  HSC55730  Sanicula graveolens G. L. Clifton, Terry Griswold 1979-7-26 10214 Humboldt Near Salmon Mtn., close to the town of Forks of Salmon 1981 Comment
  OBI55124  Sanicula tracyi Joseph P. Tracy 1947-6-25 17717 Humboldt Dinsmore's along Van Duzen Rivers opposite Black Mtn 762 Comment
  RSA296750  Sanicula tracyi Bruce Miner, Bob Easton 1979-5-29 s.n. Humboldt At east approach to State Route 36 bridge over Van Duzen River. 747 Comment
  HSC73669  Sanicula tuberosa M. A. Baker 1980-7-15 2957 Humboldt Near Whiting Ridge. 1341 Comment
  UC1197075  Sanicula tuberosa Joseph P. Tracy 1925-5-30 7037 Humboldt Northern Coast Ranges, Laribee Valley Laribee Valley; Northern Coast Ranges, Laribee Valley 701 Comment
  POM232030  Satureja douglasii I. L. Wiggins 1930-7-11 4681 Humboldt Near Samoa. Comment
  UC416708  Satureja douglasii P. E. Goddard 1906-6 684 Humboldt Blocksburg Comment
  POM266005  Saxifraga mertensiana Lincoln Constance, Reed C. Rollins 1942-5-11 2869 Humboldt 3 miles W of East Fork of Willow Creek. Comment
  UC774703  Saxifraga mertensiana Carl B. Wolf 1941-3-2 4068 Humboldt 2 mi s of Honeydew (along Honeydew Creek); North Coast Range, Honeydew Creek 152 Comment
  CAS-BOT-BC441184  Saxifraga mertensiana Doris K. Kildale 1927-3-20 2930 Humboldt Philipsville. South fork of Eel River Comment
  CAS-BOT-BC111332  Schoenoplectus acutus var. occidentalis Henry M. Pollard 1944-9-1 s.n. Humboldt Near Orleans Comment
  CAS-BOT-BC111704  Schoenoplectus pungens var. badius Doris K. Kildale 1927-6-25 3550 Humboldt Shelter Cove, coastal Comment
  UC1152056  Scirpus microcarpus Joseph P. Tracy 1950-8-7 19269 Humboldt meadow at Box Camp (Trinity Summit); , meadow at Box Camp 1463 Comment
  HSC48382  Scirpus microcarpus D. H. Norris May 1970 12465 Humboldt Gold Bluff Beach, Prairie Creek Redwoods State Park Comment
  CAS-BOT-BC517415  Scoliopus bigelovii Doris K. Kildale 1926-2-28 1520 Humboldt Kneeland Prairie Road at the watering trough 609 Comment
  HSC37964  Scrophularia californica Peter Sorensen 1976-6-16 Humboldt Woodley Island Comment
  HSC79542  Scrophularia californica Kenneth Clark 1980-5-10 630 Humboldt Shelter Cove, lower alluvial terrace of Dead Man's Gulch 9 Comment
  SEINET5223991  Scrophularia californica Unknown 2002-8-22 88 Humboldt Along Fischer Road 0.25mi N of the Mad River. Comment
  UC1011943  Scrophularia californica Francis W. Pennell 1940-7-6 26080 a Humboldt 2 mi nw Pepperwood (along Eel River, Rte 101) 30 Comment
  HSC58561  Scutellaria antirrhinoides Overton, Butler 1979-7-26 10108 Humboldt Near Cold Spring, close to the town of Willow Creek 1417 Comment
  HSC98088  Scutellaria antirrhinoides Cara Witte 2007-7-11 481 Humboldt Cold Spring. 1/2 mile south of Titlow Hill. 1391 Comment
  HSC25984  Scutellaria californica Thomas W. Nelson 1970-9-3 228 Humboldt Mad River. Comment
  JEPS62896  Scutellaria californica Joseph P. Tracy 1937-7-19 15453 Humboldt Buck Mountain 914 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
  CAS-BOT-BC63879  Sedum laxum subsp. heckneri Joseph P. Tracy 1935-7-30 14363 Humboldt Salmon summit. 1767 Comment
  HSC70891  Sedum laxum subsp. heckneri Gail Newton 1980-7-23 1707 Humboldt Near Packsaddle Ridge 1463 Comment
  HSC82131  Sedum laxum subsp. heckneri D. K. Imper 1985-6-18 Humboldt N and S of Whiteys Peak 1707 Comment
  UC1198838  Sedum laxum subsp. heckneri Joseph P. Tracy 1947-7-9 17865 Humboldt Horse Mountain Horse Mountain (on barren ledge of rock) 1432 Comment
Read comments Aug 17 2011
  UC667081  Sedum laxum subsp. heckneri Joseph P. Tracy 1935-7-30 14363 Humboldt Salmon Summit 1767 Comment
  HSC98735  Sedum radiatum Cara Witte 2007-7-20 552 Humboldt Board Camp Butte. Forest Serivce Road 4E27. 1502 Comment
  JEPS25697  Sedum radiatum P. C. Hutchison 1961-5-22 2027 Humboldt on hiway US 299 ca 4 mi n Orleans (e side Klamath River); , n of Orleans Comment
  CAS-BOT-BC63792  Sedum radiatum subsp. radiatum Reid Moran 1951-6-13 3485 Humboldt West slope of Buck Mountain 853 Comment
  CAS-BOT-BC63828  Sedum spathulifolium W. R. Dudley 1899-6-1 s.n. Humboldt Vicinity of Scotia Comment
  JEPS25692  Sedum spathulifolium P. C. Hutchison 1961-5-22 2017 Humboldt along s side Willow Creek (n side hiway US 299, 2.6 mi e of Berry Summit); e of Berry Summit, s side Willow Creek Comment
  HSC95768  Selaginella kraussiana Gordon Leppig 2000-4-12 1290 Humboldt Arcata: behind Humboldt State University, at base of stump near Fern Lake spillway 49 Comment
  SEINET200600  Selaginella oregana J. P. Tracy 1928-4-29 8426 Humboldt Prairie Creek 153 Comment
  UC1284956  Senecio blochmaniae R. F. Hoover 1946-10-29 6526 Humboldt near Callender railroad siding Comment
Read comments Mar 19 2007
  UC1223022  Senecio glomeratus Joseph P. Tracy 1950-9-10 19360 Humboldt 1 mi n Capetown; Bear River Ridge 304 Comment
  UC581696  Senecio glomeratus Joseph P. Tracy 1934-6-19 13234 Humboldt vicinity Carlotta 30 Comment
  HSC101966  Senecio integerrimus var. major M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-12 861 Humboldt Patterson Meadows 1555 Comment
  HSC82111  Senecio integerrimus var. major Thomas W. Nelson, Jane P. Nelson 1980-5-25 5250 Humboldt Along road from Dinsmore to Anderson Crossing, McKeown Ranch Rd. 100 m N of junction of road to Hindley Cabin 823 Comment
  CDA7630  Senecio jacobaea E. C. Whitney 1964-8-12 Humboldt Zuber property, Orick. 0 Comment
  UC1199492  Senecio minimus Joseph P. Tracy 1934-8-31 Humboldt Kneeland Prairie 762 Comment
  CAS-BOT-BC85841  Sequoia sempervirens Joseph P. Tracy 1926-2-21 7355 Humboldt Blue Slide, on Van Duzen River 91 Comment
  UC55657  Sequoia sempervirens J. P. Tracy 1901-8-11 1277 Humboldt immediate vicinity of Eureka 0 Comment
  SEINET10612358  Sequoia sempervirens Joseph P. Tracy 1935-12-8 Tracy 14764 Humboldt Near Korbel. Scattering trees left in logged area, fruiting abundantly. 305 Comment
  SEINET5334848  Sequoia sempervirens P. A. Lehenbauer 1857 Humboldt near Eureka Comment
  UC1145166  Setaria viridis Joseph P. Tracy Sept 1936 15189 1/2 Humboldt Eureka 30 Comment
  UCD92863  Setaria viridis A. H. Murphy 1948-9-1 s.n. Humboldt Cottral Ranch, Table Bluff. Comment
  UC169027  Sherardia arvensis Joseph P. Tracy 1906-5-6 2446 Humboldt near Hydesville; Northern Coast Region 60 Comment
  HSC40235  Sherardia arvensis J. P. Smith, J. O. Sawyer 1976-5-2 8618 Humboldt 1.5 mi. N of Willow Creek on Hwy. 96 61 Comment
  POM17181  Sherardia arvensis J. B. Feudge 1923-8-1 49 Humboldt Fortuna. 15 Comment
  CAS-BOT-BC205566  Sidalcea malachroides Joseph Burtt Davy; Walter C. Blasdale 1899-6-13 5482 Humboldt Camp Grant Comment
  SD73190  Sidalcea malachroides Darley F. Howe 1969-6-4 4626 Humboldt 14.6 miles east of Alton on Highway 36. 299 Comment
  UC1197962  Sidalcea malachroides Joseph P. Tracy 1934-8-6 13563 Humboldt 1 mi w Lindsey Creek (n side of Mad River); n side Mad River, w of Lindsey Creek 30 Comment
  UC1197967  Sidalcea malachroides Joseph P. Tracy 1918-6-9 4952 Humboldt at Eureka; Northern Coast Ranges, at Eureka 0 Comment
  JEPS67278  Sidalcea oregana subsp. eximia Joseph P. Tracy 1937-8-22 15671 Humboldt 2 mi s Field's Landing (at Still Ranch); s of Field's Landing, Still Ranch 6 Comment
  UC146131  Sidalcea oregana subsp. eximia Joseph P. Tracy 1907-6-25 2578 Humboldt in valley of Elk River Northern Coast Region, region about Humboldt Bay (region about Humboldt Bay) 0 Comment
  UC205642  Sidalcea oregana subsp. eximia Joseph P. Tracy 1920-7-25 5344 Humboldt Dows Prairie Northern Coast Region, around Humboldt Bay Comment
  UC902188  Sidalcea oregana subsp. eximia Joseph P. Tracy 1947-8-24 17898 Humboldt Box Camp Meadow , Box Camp Meadow (Trinity Summit) 1463 Comment
  HSC56404  Sidalcea oregana subsp. spicata Griswold, Butler 1979-7-11 7000 Humboldt Near Snow Camp Lake, close to the town of Willow Creek. 1393 Comment
  RSA95266  Sidalcea oregana subsp. spicata F. W. Peirson 1923-7-11 3778 Humboldt Along road 7 miles north of Arcata. Comment
  POM192570  Silene californica H. E. Parks 1930-05 0751 Humboldt Vicinity of Hydesville. Comment
  UC668093  Silene campanulata Joseph P. Tracy 1932-7-18 10704 Humboldt head of Brett Hole Trinity Summit, head of Brett Hole 1828 Comment
  HSC57450  Silene campanulata subsp. glandulosa G. L. Clifton, Griswold 1979-7-26 10264 Humboldt Near Salmon Mtn., close to the town of Forks of Salmon 1935 Comment
  JEPS87999  Silene gallica Barbara Ertter with Thomas J. Delendick 1987-5-16 6931 Humboldt ca 15 airmi e Arcata (Vista Point just w of Berry Summit on Hwy 299); Vista Point just w of Berry Summit 914 Comment
  HSC103098  Silene hookeri M. Mesler, Carol Wilson 2010-6-18 825 Humboldt Hwy 36, near mile marker 32.53 771 Comment
  HSC4164  Silene laciniata subsp. californica D. E. Anderson 1965-5-15 3709 Humboldt Along Hwy. 96, 1.9 mi. N of Willow Creek Comment
  HSC43853  Silene laciniata subsp. californica Maralyn O'Meara 1974-7-17 551 Humboldt Kneeland Comment
  RSA595780  Silene lemmonii R. S. Woglum 1931-7-15 24 B Humboldt Outer Coast Ranges, Sequoia Park. Comment
  UC13563  Silene menziesii Chesnut and Drew 1888-7-23 Humboldt Hy-Am-Pum Hy-Am-Pum (Hy-Am-Pom ?) Comment
  JEPS64287  Sisyrinchium bellum Lincoln Constance 1934-6-4 815 Humboldt Look Prairie and Bull Creek Road to Dyerville South Fork Eel River; Bull Creek Region, South Fork Eel River Comment
  HSC13915  Sisyrinchium bellum F. B. Plett 1963-3-31 14 Humboldt 1.5 mi. N of Trinidad along old Hwy. 101 Comment
  SD42554  Sisyrinchium californicum Carl B. Wolf 1937-8-10 2899 Humboldt Big Lagoon, bog at State Park. 6 Comment
  UC275574  Sisyrinchium californicum Joseph P. Tracy 1924-8-3 6764 Humboldt Big Lagoon; Northern Coast Region 6 Comment
  JEPS561  Smilacina racemosa Joseph P. Tracy 1938-7-7 16038 Humboldt Grouse Mountain 1524 Comment
  JEPS62118  Smilacina racemosa W. L. Jepson 1902-6-29 1950 Humboldt Hupa Rd. Berry's Ranch, Redwood Creek Comment
  UC275555  Smilacina racemosa Joseph P. Tracy 1924-8-10 6798 Humboldt Stongs Station Northern Coast Ranges, Van Duzen River 91 Comment
  JEPS12067  Solanum americanum Lincoln Constance 1934-6-2 786 Humboldt Bull Creek Road to mouth of (and up) Bull Creek (Bull Creek Region, South Fork Eel River); Bull Creek Region, South Fork Eel River Comment
  HSC57886  Solidago elongata Overton, Butler 1979-7-31 11437 Humboldt Near Water Dog Lakes, close to the town of Hoopa 1830 Comment
  UC581770  Solidago elongata Joseph P. Tracy 1927-8-22 8346 Humboldt near High Prairie (Bald Mountain); Northern Coast Ranges, Bald Mountain 1066 Comment
  LA204243  Solidago lepida var. salebrosa S. T. Parks; H. E. Parks 1930-9-14 785 Humboldt North shore of Big Lagoon Comment
  SEINET5506510 Image available Solidago spathulata S. K. Harris 1939-1 s.n. Humboldt Samoa Comment
  HSC104046  Solidago spathulata M. F. Norman 2015-4-11 7 Humboldt Arcata, Ma-le'l Dunes Comment
  RSA0043130  Solidago spathulata Patricia Wilder 1968-8-21 4401 Humboldt Northern coastal arm of Humboldt Bay, ca. two miles southwest of Samoa. Humboldt Bay drainage area. 8 Comment
  UCR122383  Solidago spathulata var. spathulata George K. Helmkamp, E. A. Helmkamp 2001-7-8 7000 Humboldt North Coast, north spit of Samoa Peninsula, 0.5 mi north of CA Hwy 255 bridge over Humboldt Bay 6 Comment
  HSC67039  Sonchus asper J. P. Smith 1971-10-9 5045 Humboldt Banks and flood plain of the Mad River above the fish hatchery. Comment
  UC1070277  Sonchus oleraceus H. L. Person 1932-7-16 19437 Humboldt Highway n Trinidad; Rock Point Quad. Comment
Read comments Aug 3 2007
  RSA245275  Sonchus oleraceus Brad W. Klipfel 1973-8-17 281 Humboldt Big Lagoon Co. Park. 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
  HSC97911  Sorbus scopulina var. cascadensis Cara Witte 2007-6-13 267 Humboldt Along Forest Service Rd. 5N04. Approximately 1 mile east of intersection to Grouse Mountain Lookout. 1534 Comment
  POM313133  Spartina densiflora Malcolm A. Nobs, S. Galen Smith 1949-8-3 1180 Humboldt Marshes near mouth of Elk River, ca. 4 mi south of Eureka on Hwy 101 Comment
  CDA19921  Spartium junceum R. Spadoni 2002-6-26 PDR P 070828 Humboldt Northern California; Vicinity of Garberville. 0 Comment
  SJSU8458  Spergularia canadensis var. occidentalis H. T. Harvey 1977-7-6 614 Humboldt South Spit, Humboldt Bay Comment
  UCR122377  Spergularia marina George K. Helmkamp, E. A. Helmkamp 2001-7-8 7007 Humboldt North Coast, north spit of Samoa Peninsula, 0.5 mi north of CA Hwy 255 bridge over Humboldt Bay 6 Comment
  CAS-BOT-BC390614  Spergularia rubra Henry M. Pollard 1944-9-1 s.n. Humboldt Near Orleans Comment
  POM17174  Spiraea douglasii J. B. Feudge 1923-7-23 57 Humboldt Trinidad. 9 Comment
  UC1199028  Spiraea douglasii Joseph P. Tracy 1927-8-22 8350 Humboldt Bald Mountain Northern Coast Ranges (near High Prairie) 1066 Comment
  UC1199029  Spiraea douglasii Joseph P. Tracy 1924-7-13 6734 Humboldt Big Lagoon; Northern Coast Region 6 Comment
  UC1196401  Spiranthes romanzoffiana Joseph P. Tracy 1941-8-24 17037 Humboldt near McKay Camp; South Fork Mountain 1676 Comment
  HSC37591  Spiranthes romanzoffiana J. D. Ackerman 1976-8-6 784 Humboldt Sand Hills across from Samoa Blvd. at intersection of Samoa Blvd. and tunroff to Samoa Bridge Comment
  UC666996  Spiranthes romanzoffiana Joseph P. Tracy 1937-8-22 8341 Humboldt near High Prairie; Bald Mountain 1066 Comment
  UC153992  Stachys ajugoides var. rigida J. P. Tracy 1906-5-20 2466 Humboldt immediate vicinity Eureka 0 Comment
  UC180214  Stachys ajugoides var. rigida Joseph P. Tracy 1914-6-14 4512 Humboldt near Hydesville; Northern Coast Region 60 Comment
  UC535709  Stachys ajugoides var. rigida Eleanor Armstrong 1934-5-18 Humboldt Richardson Grove Comment
  UC577326  Stachys ajugoides var. rigida Joseph P. Tracy 1937-8-12 15652 Humboldt Snow Camp 1402 Comment
  UCLA71140  Stachys ajugoides var. rigida Joseph P. Tracy 1938-6-15 15937 Humboldt vicinity Carlotta 30 Comment
  UCLA71151  Stachys ajugoides var. rigida Huron H. Smith 1911-6-5 3782 Humboldt Camp 20 Vances Comment
  RSA34043  Stachys bullata A. A. Heller 1923-7-9 s.n. Humboldt Between Eureka and Fortuna. Comment
  HSC47011  Stachys mexicana Sheila Logan 1978-4-10 179 Humboldt Redwood Park behind HSU campus, 1/4 mi. N of Bayside Rd. Comment
  HSC14418  Stachys rigida P. Markle 1962-5-19 47 Humboldt Beginning of trail in woods near HSC campus near reservoir 30 Comment
  HSC48678  Stachys rigida var. rigida Brad Klipfel 1973-7-31 250 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC57939  Stachys rigida var. rigida G. L. Clifton, Griswold 1979-7-31 11606 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1719 Comment
  CAS-BOT-BC175346  Stellaria borealis subsp. sitchana Joseph P. Tracy 1900-5-22 795 Humboldt At Eureka 60 Comment
  UC161039  Stellaria littoralis J. P. Tracy 1909-5-16 2968 Humboldt near Trinidad 30 Comment
  HSC70500  Stenanthium occidentale Gail Newton 1980-7-20 1618 Humboldt Near Bell Swamps 1426 Comment
  POM174066  Stephanomeria virgata Joseph P. Tracy 1918-9-29 5104 Humboldt S Fork Eel River, 4 miles above the mouth. 61 Comment
  HSC32339  Stipa lemmonii D. E. Anderson, S. Dowty, Thomas W. Nelson 1972-6-14 5642 Humboldt Senteney Rock, a large barren Franciscan Rock along Swayback Ridge Comment
  HSC102164  Stipa occidentalis var. californica M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-3 1074 Humboldt Patterson Meadows 1566 Comment
  HSC32340  Stipa occidentalis var. californica D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5641 Humboldt Senteney Rock, a large barren Franciscan Rock along Swayback Ridge Comment
  HSC103294  Streptanthus tortuosus Michael G. Simpson, Michael Mesler, Michael Mayer 2008-5-27 3014 Humboldt Six Rivers National Forest; ~ 1.7 mi. south of Berry Summit along Titlow Hill Road.; ~ 1.4 mi. west-northwest of Horse Mtn. Radio Tower. 980 Comment
  HSC65856  Streptanthus tortuosus Gail Newton 1980-6-28 687 Humboldt Near Mad River Butte. 1536 Comment
  POM172671  Streptanthus tortuosus Joseph P. Tracy 1912-7-26 3843 Humboldt Kneeland Prairie 762 Comment
  UCD116417  Streptanthus tortuosus Richard Spellenberg 1965-6-14 1130 Humboldt south of airport, about 5 miles east of Kneeland. Comment
  UC1198799  Streptanthus tortuosus var. orbiculatus Joseph P. Tracy 1938-6-13 15909 Humboldt on exposed rock ledge near Cold Springs; North Coast Ranges, Grouse Mountain 1432 Comment
  HSC74293  Swertia radiata M. A. Baker 1980-7-22 3084 Humboldt Near Salmon Mtn. 1820 Comment
  UC1173691  Symphoricarpos albus var. laevigatus Joseph P. Tracy 1939-8-20 16428 Humboldt near Blue Lake (along Mad River); Mad River 15 Comment
  HSC102570  Symphoricarpos mollis M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-29 1557 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1579 Comment
  UCD137442  Symphoricarpos mollis Joseph P. Tracy 1948-8-15 18144 Humboldt Trinity Summit. On ridge 2 miles east of Grove's Prairie. 1524 Comment
  CAS-BOT-BC98928  Symphyotrichum foliaceum var. parryi Joseph P. Tracy 1937-8-12 15634 Humboldt Snow Camp 1402 Comment
  UC1222915  Symphyotrichum hendersonii Joseph P. Tracy 1947-8-24 17902 Humboldt Box Camp Trinity Summit 1463 Comment
  UCD150385  Symphyotrichum lentum William Anderson and H. Mc. 1964-8-6 s.n. Humboldt Little River. Comment
  HSC21150  Synthyris reniformis R. D. Modafferi 1965-3-13 13 Humboldt 1.2 mi. N of Trinidad on Trinity St. 0 Comment
  CAS-BOT-BC376725  Tanacetum bipinnatum Doris K. Kildale 1926-6-29 2245 Humboldt Mouth of Mad River Comment
  HSC6243  Tanacetum bipinnatum H. E. Parks Sep 1941 24216 Humboldt Little River Comment
  HSC6248  Tanacetum bipinnatum J. W. Johnson 1962-6-4 1405 Humboldt W end of Hollow 10, W.M Lanphere Farm, Samoa Peninsula Comment
  SD148217  Tanacetum camphoratum G. K. Helmkamp, E. A. Helmkamp 2001-7-8 7012 Humboldt Samoa Peninsula, 2.6 miles south of California 255 bridge across Humboldt Bay. 14 Comment
  SEINET4016798  Tanacetum camphoratum O. M. Clark 1932-1 663 Humboldt North Eureka. Comment
  RSA246918  Tanacetum douglasii R. F. Thorne, Percy C. Everett 1965-8-5 35167 Humboldt Samoa Dunes. 3 Comment
  UCR48591  Tanacetum douglasii R. D. Goeden, Don W. Ricker 1987-9-2 870902- 17 Humboldt North Coast, Loleta, at bay on Cannibal Road 3 Comment
  CAS-BOT-BC376777  Tanacetum parthenium Henry M. Pollard 1947-8-21 s.n. Humboldt Near Camp Creek, Orleans region Comment
  RSA0049665  Taraxacum laevigatum Dean Wm. Taylor 2011-5-4 21112 Humboldt Alderpoint Road in the vicinity of the Snowline Fox Farm (Larabee Valley quadrangle placename), vicinity of the road crossing of Knack Creek 341 Comment
  UC1223046  Taraxacum officinale Joseph P. Tracy 1951-6-24 19542 Humboldt Ashland Ridge Kneeland Prairie 762 Comment
  UC314623  Taraxia ovata Joseph P. Tracy 1924-3-16 6627 Humboldt Garberville Northern Coast Ranges 121 Comment
  JEPS49695  Tellima grandiflora Harley P. Chandler May 1901 1232 Humboldt Humboldt Bay; North Coast Range 121 Comment
  UC1129924  Thermopsis macrophylla var. macrophylla A. E. Wieslander 1931-5-19 7 Humboldt near Orleans; Klamath National Forest, Hoopa Quadrangle Comment
  UCD108599  Thermopsis robusta G. F. Hrusa 1992-5-3 10423 Humboldt 9.5 road m. N of Klamath River on Cedar Camp Rd. 1219 Comment
  UC1222644  Thlaspi montanum var. montanum Joseph P. Tracy 1950-6-6 18999 Humboldt on the Albee Road 2 mi s Burr Valley; s of Burr Valley 1158 Comment
  CAS-BOT-BC81316  Thuja plicata Doris K. Kildale 1926-11-13 2850 Humboldt Eureka 21 Comment
  HSC91618  Thuja plicata E. Mackey 1986-10-7 Humboldt Patrick's Point State Park along Patrick's Point Drive Comment
  NY17203  Thuja plicata E. K. Balls 1953-10-11 18632 Humboldt This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  NY17208  Thuja plicata L. S. Rose 1926-6-26 66039 Humboldt This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  RSA126263  Thuja plicata I. L. Wiggins 1955-7-31 13594 Humboldt Hillside 9 miles east of Arcata along Highway 299 Comment
  SDSU1860  Thuja plicata D. F. Howe 1963-8-7 3705 Humboldt 30 miles west of west entrance to Six Rivers National Forest on #299. 183 Comment
  UC161492  Thysanocarpus curvipes Joseph P. Tracy 1903-5-24 1915 Humboldt Alder Point Northern Coast Ranges, Eel River (on Eel River) 152 Comment
  CAS-BOT-BC436908  Tiarella trifoliata var. unifoliata Doris K. Kildale 1927-8-7 3860 Humboldt Lawrence Creek 609 Comment
  CAS-BOT-BC436915  Tiarella trifoliata var. unifoliata C. C. Harris; S. K. Harris 1936-6-16 660 Humboldt Yager Road from Carlotta 152 Comment
  RSA32652  Tiarella trifoliata var. unifoliata Doris K. Kildale 1925-6-28 833 Humboldt Lawrence Crk. Comment
  UC11935  Tiarella trifoliata var. unifoliata J. Burtt Davy 1899-6-13 5513 Humboldt Redwoods near Camp Grant (along the Eel River); along the Eel River Comment
  BLMAR634  Tonella tenella Jennifer Wheeler 2011-6-15 634 Humboldt Lacks Creek, Pine Ridge Road 914 Comment
  JEPS26267  Tonella tenella Joseph P. Tracy 1902-6-3 1666 Humboldt near Hubbards Station (on ridge between Eel River and South Fork); Northern Coast Ranges 609 Comment
  UC27662  Tonella tenella Harley P. Chandler Jun 1901 1275 Humboldt Hupa Mts. Hupa Indian Reservation (between Bairs and summit) Comment
  HSC71597  Torilis arvensis M. A. Baker 1980-6-26 2409 Humboldt Near Sims Creek 610 Comment
  HSC74669  Torilis arvensis Gail Newton 1981-8-7 2434 Humboldt Near Bug Creek 1042 Comment
  UCD128165  Torilis arvensis Thomas Nelson; Jane Nelson 1978-7-2 4387 Humboldt along Highway 36 ca. 1 mile east of Grizzly Creek. Comment
  HSC97966  Torilis arvensis Cara Witte 2007-7-2 393 Humboldt Cold Spring. 1/2 mile south of Titlow Hill. 1406 Comment
  UCD93214  Torreyochloa pallida var. pauciflora A. H. Murphy 1951-8-17 88 Humboldt South Fork Mtn., ca. 15 miles N.E. of Bridgeville-Trinity County line. Comment
  UCR3932  Toxicodendron diversilobum David Whistler, H. M. Whistler 1964-7-29 640729- 7 Humboldt North Coast, US Hwy 101, along bank of Eel River, 0.2 mi. north of Weott 85 Comment
  CAS-BOT-BC517422  Triantha occidentalis subsp. occidentalis L. B. Kildale 1930-8-10 10528 Humboldt Snow Camp, head of Redwood Creek Comment
  HSC43157  Trichostema lanceolatum R. Sutherland 1976-8-19 1 .19876 Humboldt 259 Comment
  UC1198627  Trientalis latifolia Joseph P. Tracy 1935-5-24 13816 Humboldt Eureka; Northern Coast Ranges, Eureka 0 Comment
  UCD107571  Trifolium albopurpureum W. Williams 1951-1 s.n. Humboldt Keithly Ranch. Comment
  UC1197230  Trifolium albopurpureum var. dichotomum Joseph P. Tracy 1906-6-10 2488 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  UC1197235  Trifolium albopurpureum var. dichotomum Joseph P. Tracy 1921-6-12 5820 Humboldt Kneeland Prairoe Northern Coast Ranges 762 Comment
  UC1223365  Trifolium albopurpureum var. dichotomum Joseph P. Tracy 1950-6-15 18807 Humboldt 7 mi n Harris (Jenk's Ranch) Comment
  UC1223386  Trifolium albopurpureum var. dichotomum Joseph P. Tracy 1936-5-29 14819 Humboldt French Camp Comment
  CDA4307  Trifolium angustifolium J. R. Keck Jr., W. Simas 1973-5-3 Humboldt Bear River Road, between Cook & Morrison. 0 Comment
  UC1223499  Trifolium bifidum var. decipiens Joseph P. Tracy 1943-5-23 17427 Humboldt e Redwood Creek (at Berry's, on Trinity Hwy); North Coast Ranges 274 Comment
  HSC104457  Trifolium campestre Jeff Barrett, Keleigh Deitsch, Tessa Purdy 2014-4-13 18 Humboldt Samoa Peninsula, Fairhaven, along south side of Bay Street 5 Comment
  UC179920  Trifolium campestre Joseph P. Tracy 1914-7-4 4523 Humboldt Between Korbel and Angels Ranch Northern Coast Ranges 457 Comment
  UC33569  Trifolium cyathiferum Chesnut and Drew 1888-7-10 Humboldt Jarnigan's Comment
  UC594162  Trifolium cyathiferum S. K. Harris, J. P. Tracy, and H. S. Yates 1936-6-17 3452 Humboldt nw slopes Buck Mtn 822 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
  RSA168861  Trifolium dichotomum Joseph P. Tracy 1943-5-9 17420 Humboldt Trinity River at Willow Creek. Comment
  UC1223466  Trifolium dubium Joseph P. Tracy 1935-5-25 13830 Humboldt Blocksburg Comment
  RSA43868  Trifolium dubium H. M. Pollard 1948-7-18 s.n. Humboldt Banks of Klamath River, Orleans. Comment
  HSC40039  Trifolium eriocephalum Thomas W. Nelson, James Nelson 1976-7-1 2890 Humboldt Ridge N of Bear Creek 1494 Comment
  UC16712  Trifolium eriocephalum var. eriocephalum J. Burtt Davy 1899-6-7 5385 Humboldt near Harris; Northern Coast Ranges Comment
  UC1223461  Trifolium fragiferum Joseph P. Tracy 1937-7-20 15447 Humboldt mouth Mad River Comment
  UC1223457  Trifolium fucatum Joseph P. Tracy 1935-5-25 13831 Humboldt Blocksburg Comment
  HSC15123  Trifolium fucatum R. A. Rasp 1964-5-17 38 Humboldt 1 mi. S of Arcata beside Hwy. 101 Comment
  HSC77396  Trifolium fucatum L. P. Janeway 1983-5-12 291 Humboldt At HBMWD park no. 4 along Warren Cr. Rd., parking area on the S bank of the Mad River 15 Comment
  UC303193  Trifolium fucatum Joseph P. Tracy 1923-5-13 6203 Humboldt Bridgeville Northern Coast Ranges 228 Comment
  HSC38085  Trifolium gracilentum Thomas W. Nelson, James Nelson 1976-5-30 2606 Humboldt McKeown Ranch, N of Dinsmore. Comment
  UC1223360  Trifolium macraei Joseph P. Tracy 1936-5-30 14841 Humboldt Samoa Sand Dunes Comment
  UC1223347  Trifolium microdon Joseph P. Tracy 1944-5-14 17471 Humboldt Bucksport Comment
  UC594252  Trifolium microdon S. K. Harris, J. P. Tracy, and H. S. Yates 1936-6-17 3448 Humboldt nw slopes Buck Mtn Comment
  UC906700  Trifolium oliganthum Joseph P. Tracy 1942-5-16 11548 Humboldt Garberville vicinity 152 Comment
  SD90164  Trifolium repens Benjamin C. Stone 1952-6-21 117 Humboldt Stone Lagoon on Hwy 101 14 Comment
  HSC98062  Trifolium repens Cara Witte 2007-7-11 503 Humboldt Grouse Mountain. Forest Service Road 5N04. Near spring. 1583 Comment
  HSC2148  Trifolium variegatum Elrid H. Spinas 1948-6-16 55 Humboldt Horse Mtn. Comment
  HSC45129  Trifolium variegatum R. Sutherland 1978-6-1 1 .1678 Humboldt 282 Comment
  UC1223321  Trifolium variegatum var. melananthum Joseph P. Tracy 1935-5-25 13861 Humboldt Fort Seward 106 Comment
  UC1197553  Trifolium variegatum var. melananthum Joseph P. Tracy 1930-5-18 8695 Humboldt Roseville golf course Northern Coast Ranges 152 Comment
  RSA195477  Trifolium variegatum var. variegatum C. R. Gunn 1963-6-3 2701 Humboldt 1/2 mile south of Korbel Comment
  UC1197554  Trifolium variegatum var. variegatum Joseph P. Tracy 1936-6-17 14969 1/2 Humboldt Burr Valley nw slope of Buck Mtn 1066 Comment
  HSC32919  Trifolium willdenovii Thomas W. Nelson, James Nelson 1973-5-28 966 Humboldt McKeown Ranch N of Dinsmore Comment
  JEPS4173  Trifolium willdenovii Joseph P. Tracy 1932-5-1 9866 Humboldt vicinity Garberville; Northern Coast Ranges 121 Comment
  HSC103851  Trifolium wormskioldii G. D. Barbe, T. C. Fuller 1974-6-17 1851 Humboldt Crescent City; Pebble Beach Rd., south of Airport and Washington Blvd. Comment
  HSC15194  Trifolium wormskioldii Norman H. Moe 1962-5-17 Humboldt Lanphere's Place. Comment
  UC1223522  Trifolium wormskioldii Joseph P. Tracy 1938-7-15 16076 Humboldt mouth of Eel River 3 Comment
  JEPS37724  Trifolium wormskioldii Joseph P. Tracy 1918-7-3 4991 Humboldt Shelter Cove Northern Coast Ranges 15 Comment
  RSA168852  Trifolium wormskioldii Joseph P. Tracy 1950-6-8 18714 Humboldt Near the Sand Cut. Wild Cat Road, 2 miles south of Ferndale. Comment
  UC275566  Triglochin maritima Joseph P. Tracy 1924-7-13 6718 Humboldt Northern Coast Region, Big Lagoon Big Lagoon; Northern Coast Region, Big Lagoon 6 Comment
  RSA226618  Triglochin maritima Norman Dennis 1965-6-8 101 Humboldt Salt marsh along east edge of Humboldt Bay, 1 mile south of Arcata Comment
  HSC39195  Trillium albidum D. E. Anderson, J. P. Smith 1971-7-6 - 1330 Humboldt 1.0 mi. W of Pine Ridge Summit, 6 mi. E of junction with Redwood Valley Rd. Comment
  JEPS86159  Trillium chloropetalum Wayne Roderick 1966-5-5 Humboldt n. of Bridgeville 609 Comment
  CHSC28032  Trillium ovatum L. Greenhill 1977-4-6 12 Humboldt Abundant population 10 ft. from n side of highway 36, 1mile w from Grizzly Creek State Campground. 91 Comment
  HSC48827  Trillium ovatum Brad Klipfel, J. P. Smith, J. O. Sawyer 1973-5-27 27 Humboldt Grogan's Hole near N Trinity Mtn. 1829 Comment
  UC1197814  Trillium ovatum unknown 1943-4-2 Humboldt Eureka Comment
  SEINET10275388  Trillium ovatum Unknown 1963-2-24 52 Humboldt altitude ca 250 ft, floor of Redwood Forest; Nelson Grove near bank of Eel River, Humboldt State Park Comment
  UCD18653  Trillium ovatum Roman Gankin 1956-3-17 105 Humboldt off US Hwy 101. Comment
  JEPS11786  Triodanis biflora Lincoln Constance 1934-6-4 818 Humboldt Look Prairie Bull Creek Region (and Bull Cr. road to Dyerville, South Fork Eel River); South Fork Eel River, , Look Prairie Comment
  BLMAR608  Triphysaria eriantha Jennifer Wheeler 2011-4-1 608 Humboldt King range, located before McNutt Gulch on Mattole Rd Comment
  UC1334892  Triphysaria eriantha subsp. eriantha L. D. Thurman 1965-5-2 669 Humboldt along the roadside of U.S. #101 at the Little River turnoff Comment
  UC657728  Triphysaria eriantha subsp. eriantha Milo S. Baker 1941-4-10 9942 Humboldt along hiwy a few mi s Eureka Comment
  CHSC68505  Triphysaria pusilla Vernon H. Oswald 1997-4-10 8333 Humboldt Big Lagoon County Park at the southwest edge of Big Lagoon. 3 Comment
  UC27277  Triphysaria pusilla C. E. Spear April, 1898 Humboldt Waddington Comment
  SBBG68601  Triphysaria versicolor subsp. faucibarbata S. W. Hutchinson -Apr-1927 106 Humboldt Humboldt County [no specific locality] 30 Comment
  UC1198042  Triphysaria versicolor subsp. versicolor Joseph P. Tracy 1936-6-6 14862 Humboldt Eureka 6 Comment
  RSA10052  Trisetum canescens Joseph P. Tracy 1926-5-22 7502 Humboldt Northern Coast Ranges, Prairie Creek. 152 Comment
  SACT002443  Trisetum canescens Herbert Copeland 1936-6-15 Humboldt At world's biggest tree in redwood forest near Dyerville Comment
  HSC13418  Trisetum cernuum T. L. Ackerman 1964-5-14 47 Humboldt Near E end of 17th St., Arcata. Comment
  UC1103152  Trisetum cernuum Joseph P. Tracy 1935-5-24 13813 Humboldt Eureka; Northern Coast Ranges 0 Comment
  UCD93907  Trisetum cernuum R. Tofsrud 1949-7-1 s.n. Humboldt On road between Scotia and Capetown. Comment
  SEINET8719521 Image available Trisetum cernuum Unknown 1952-1 7551 Humboldt Spruce Grove, Trinidad. Comment
  JEPS559  Triteleia hyacinthina Joseph P. Tracy 1937-7-19 15451 Humboldt nw slope Buck Mountain (lower foothills) 762 Comment
  UC666899  Triteleia laxa Joseph P. Tracy 1930-7-6 8841 Humboldt Kneeland Prairie 762 Comment
  UC1225864  Triteleia peduncularis Joseph P. Tracy 1942-6-15 17123 Humboldt near Redcrest Resort (Englewood); Englewood 91 Comment
  HSC94180  Triticum aestivum Gordon Leppig, Kai Neander 2000-4-14 1293 Humboldt Arcata, E of the Community Center parking lot 3 Comment
  CAS-BOT-BC85897  Tsuga heterophylla Doris K. Kildale 1927-4-10 3078 Humboldt Prairie Creek in deep woods Comment
  NY64312  Tsuga heterophylla J. P. Tracy 1940-8-25 16704 Humboldt This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  CAS-BOT-BC85894  Tsuga heterophylla L. R. Abrams 1918-6-17 7211 Humboldt Between Briar's Resort and Bald Mt. Comment
  UCD108651  Ulex europaeus E. N. Gladish 1957-8-12 49 Humboldt Five miles southeast of Maple Creek. Comment
  UC1193224  Umbellularia californica R. H. Neuns 1950-10-12 139 Humboldt Queens Peak, Quadrangle 28D4 Queens Peak 701 Comment
  RSA701676  Umbellularia californica J. R. Bruff 1930-08 s.n. Humboldt Roadside North of Trinidad California Comment
  HSC62761  Urtica dioica subsp. gracilis J. M. DiTomaso 1979-4-21 889 Humboldt 50 yds. from Little River, 200 yds. from beach, 11 mi. N of Arcata. Comment
  SEINET202011  Urtica urens Joseph P. Tracy 1944-6-10 17476 Humboldt Eureka. 30 Comment
  CHSC24741  Vaccinium ovatum G. Strang 1976-4-11 8 Humboldt 6.3 mi w of intersection of U.S. 101 and dirt road leading to Fern Canyon on west side of dirt road. 45 Comment
  CDA38877  Vaccinium ovatum Gordon Leppig 1998-6-26 854 Humboldt McKinleyville, Rte 101 at Mad River Overlook. Comment
  CAS-BOT-BC199406  Vaccinium parvifolium Clarence R. Quick 1959-7-24 59 -35 Humboldt Bee Mt., ca. 12 miles southwest of Orleans Comment
  CAS-BOT-BC199420  Vaccinium parvifolium Joseph P. Tracy 1927-6-12 8133 Humboldt Horse Mountain 1432 Comment
  HSC31220  Vaccinium parvifolium D. E. Anderson 1972-6-20 5729 Humboldt Along the Redwood Valley-Hoopa Rd., E of the summit. Comment
  HSC54531  Vaccinium parvifolium Overton, Butler 1979-7-23 9452 Humboldt Near Horse Mtn., close to the town of Willow Creek 1295 Comment
  JEPS58710  Vaccinium parvifolium Joseph P. Tracy 1918-4-21 4879 Humboldt Near Newell's old cmap, Kneeland Prairie Road, around Humboldt Bay, Northern Coast Region, Humboldt Bay 457 Comment
  UC1121143  Vaccinium parvifolium A. E. Wieslander 1931-5-19 205 Humboldt Near Orleans; Klamath Forest, Hoopa Quad. Comment
  UC22217  Vaccinium parvifolium Harley P. Chandler May 1901 1182 Humboldt Humboldt Bay North Coast Ranges 30 Comment
  JEPS9372  Valeriana californica Joseph P. Tracy 1935-7-30 14381 Humboldt Salmon Summit 2103 Comment
  UC1239584  Valeriana sitchensis subsp. scouleri Mrs. R. D. Douglass 1919-5-8 Humboldt near Ferndale; Nothern Coast Region Comment
  UC212729  Valeriana sitchensis subsp. sitchensis Joseph P. Tracy 1919-9-18 5230 Humboldt Trinity Summit; Northern Coast Ranges 1828 Comment
  CAS-BOT-BC76047  Vancouveria hexandra Doris Kildale 1931-5-10 10677 Humboldt Snow Camp. Comment
  CAS-BOT-BC76051  Vancouveria hexandra Mrs. H. E. Wilder 1933-5-20 s.n. Humboldt Carlotta. Comment
  RSA247145  Vancouveria hexandra Gary D. Wallace 1971-7-29 948 Humboldt Prairie Creek Redwoods St. Pk. along Zig Zag Trail #3 leading W from Hwy. 101. Comment
  SEINET10536497  Vancouveria planipetala Mary Susan Taylor 1980-6-11 Taylor 2843 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
  UCD95101  Vancouveria planipetala Rolf Y. Berg 1963-7-5 s.n. Humboldt near south entrance to Benbow Lake State Park, U.S. Highway 101. Comment
  UCSB23564  Vancouveria planipetala Keefe, Joseph 1967-7-8 Humboldt Redwood Forest, Avenue of the Giants, 2.4 miles north of Miranda 121 Comment
  JEPS86091  Veratrum californicum var. californicum Wayne Roderick 1966-6-28 Humboldt 9 mi e Bridgeville 609 Comment
  HSC40825  Verbena lasiostachys var. lasiostachys Thomas W. Nelson, James Nelson 1976-7-26 3044 Humboldt S of Mount Lassic (Signal Peak) 1707 Comment
  UC147891  Veronica peregrina subsp. xalapensis J. P. Tracy 1910-5-22 3136 Humboldt immediate vicinity of Eurika 0 Comment
  SEINET3825239 Image available Veronica scutellata Malcolm A. Nobs, S. Galen Smith 1949-8-3 1190 Humboldt Southern outskirts of Eureka Comment
  HSC78983  Veronica scutellata L. P. Janeway 1984-5-16 795 Humboldt N Spit of Humboldt Bay, W side of Samoa Rd., 0.25 mi. NW of the boat ramp 3 Comment
  HSC48401  Veronica serpyllifolia subsp. humifusa Brad Klipfel 1973-6-10 90 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  JEPS12698  Viburnum ellipticum P. E. Goddard 1908-7-20 Humboldt 1 mi s Harris Comment
  HSC37952  Vicia americana var. americana Peter Sorensen 1976-6-16 Humboldt Woodley Island Comment
  HSC74383  Vicia americana var. americana M. A. Baker 1980-6-28 2474 Humboldt Near Mad River Buttes 1445 Comment
  UC1197477  Vicia americana var. americana Joseph P. Tracy 1933-5-20 12255 Humboldt near Petrolia (Mattole River); North Coast Region, Mattole River 15 Comment
  HSC71620  Vicia tetrasperma J. P. Smith 1973-5-26 6809 Humboldt Scotia Bluffs along the Eel River near Rio Dell Comment
  CAS-BOT-BC263954  Viola adunca W. R. Dudley 1899-6-1 s.n. Humboldt Eureka Penninsula Comment
  HSC21761  Viola adunca R. D. Modafferi 1965-3-13 15 Humboldt 0.6 mi. N of Trinidad on Trinity St. Approx. 1/2 mi. W of 30 Comment
  HSC32389  Viola adunca Linda M. Barker 1974-5-11 181 Humboldt Redwood National Park, Bald Hills Rd., Gans Prairie 549 Comment
  UC1198417  Viola bakeri Joseph P. Tracy 1942-6-23 17257 Humboldt ridges near Water-dog Lakes; Trinity Summit 1828 Comment
  HSC41239  Viola cuneata Brad Klipfel 1974-5-27 378 Humboldt Horse Mtn. NW of the towers Comment
  HSC21786  Viola glabella Elrid H. Spinas 1948-5-22 31 Humboldt Horse Mtn. Comment
  UC502964  Viola glabella Joseph P. Tracy 1927-6-12 8153 Humboldt Horse Mountain; Northern Coast Ranges, Horse Mountain 1219 Comment
  CAS-BOT-BC536496  Viola glabella A. M. Vollmer; L. Beane 1951-6-8 134 Humboldt Grizzly Camp, State Hwy 36 Comment
  HSC45612  Viola glabella Diane L. Reed 1978-5-7 54 Humboldt Top of Friday Ridge, 3 mi. S of Brush Mtn. on Friday Ridge Rd. Comment
  HSC33056  Viola hallii Thomas W. Nelson 1974-5-7 1234 Humboldt Beside airstrip at Kneeland Prairie Comment
  UC1103556  Viola macloskeyi Joseph P. Tracy 1933-7-16 12780 Humboldt South Fork Mountain at McKay Camp McKay Camp; South Fork Mountain, McKay Camp 1676 Comment
  HSC32842  Viola ocellata Thomas W. Nelson, James Nelson 1973-5-28 946 Humboldt McKeown Ranch N of Dinsmore Comment
  CHSC24861  Viola sempervirens W. A. Vaccaro 1976-4-4 1 Humboldt Population ca. 300 yds ne of intersection of Cedat St. and W. St., Cutten. 45 Comment
  HSC44318  Viola sempervirens J. Walker 1977-4-23 11 Humboldt 2.5 mi. S of Shelter Cove Rd., S Fork of Bear Creek at Wailaki Campground 561 Comment
  SEINET11154271  Viola sempervirens J. P. Tracy 1904-4-3 2006 Humboldt Eureka 0 Comment
  HSC70239  Viola sheltonii M. A. Baker 1980-6-8 1903 Humboldt Near Buck Flat. 1554 Comment
  UC502952  Viola sheltonii Joseph P. Tracy Jul 16 1930-Jul 19 1930 8910 Humboldt near McKay Camp (South Fork Mountain); Northern Coast Ranges, South Fork Mountain 1676 Comment
  HSC98569  Viola sheltonii Cara Witte 2008-6-9 691 Humboldt Board Camp Butte. Forest Serivce Road 4E27. 1503 Comment
  JEPS40248  Vitis californica W. L. Jepson 1936-8-11 17870 Humboldt Philipsville South Fork Eel River Comment
  SEINET200566 Image available Vitis californica Joseph P. Tracy 1922-1 6109 Humboldt Klamath River at Bluff Creek. 91 Comment
  UC212888  Vulpia bromoides Joseph P. Tracy 1919-4-27 5132 Humboldt Humboldt Bay Northern Coast Region (Ocean Beach) Comment
  UC1145198  Vulpia microstachys var. ciliata Joseph P. Tracy 1939-5-14 16295 Humboldt opposite Buck Mountain (Dinsmore's, flats along Van Duzen River); Van Duzen River 762 Comment
  SEINET3132612  Vulpia microstachys var. microstachys D. E. Anderson, JO Sawyer, JP Smith Jr. 1970-5-10 5056 Humboldt Along road from Redwood Creek to Hoopa, ca. 1-3 mi. W of Hoopa Comment
  UC1145199  Vulpia microstachys var. microstachys Joseph P. Tracy 1936-6-17 1496 1/2 Humboldt nw slope Buck Mountain (Burr Valley); Burr Valley 1066 Comment
  UC1155009  Vulpia microstachys var. pauciflora Richard Spellenberg 1965-6-14 1122 Humboldt about 2 mi e Kneeland; Kneeland Prairie Comment
  UC70930  Vulpia microstachys var. pauciflora Joseph Burtt Davy and Walter C. Blasdale 1899-6-19 5674 Humboldt Hoopa Mt. Comment
  UCD94574  Vulpia microstachys var. pauciflora A. H. Murphy 1951-6-1 55 Humboldt about 2 miles east of Low Gap, on the Mad River drainage. Comment
  HSC65449  Vulpia myuros J. P. Smith 1973-5-26 6796 Humboldt Scotia Bluffs along the Eel River near Rio Dell. Comment
  HSC20447  Whipplea modesta J. W. Johnson 1962-4-22 1280 Humboldt Willow Creek along the Hwy. on the canyon slope W of town Comment
  UC154108  Whipplea modesta J. P. Tracy 1906-4-15 2412 Humboldt above Korbel; Bald Mt. 609 Comment
  HSC76325  Woodwardia fimbriata Teresa Prendusi 1981-7-23 362 Humboldt Near Black Mountain. 890 Comment
  JEPS60112  Woodwardia fimbriata W. L. Jepson 1932-7-30 16453 Humboldt Bull Creek, on bluff Bull Creek 121 Comment
  RSA46704  Woodwardia fimbriata Doris K. Kildale 1928-12-29 6762 Humboldt Stevens Grove Comment
  HSC40040  Wyethia angustifolia Thomas W. Nelson, Jane P. Nelson 1976-7-1 2891 Humboldt Ridge N of Bear Creek 1463 Comment
  HSC57125  Wyethia angustifolia Overton, Butler 1979-7-25 9885 Humboldt Near Sims Mtn., close to the town of Willow Creek 1295 Comment
  UC128618  Wyethia angustifolia P. E. Goddard Jul 1910 Humboldt Hupa Valley Comment
  HSC82417  Wyethia angustifolia Thomas W. Nelson 1979-7-11 5038 Humboldt Along trail from Grogan's Hole to North Trinity Mtn., from Grogan's Hole to summit. Comment
  CHSC98382  Wyethia longicaulis Dean Wm. Taylor 2004-6-24 19132 Humboldt Horse Mountain, along Titlow Hill Road 0.4 miles north from the junction with the road to the mountain summit. 1310 Comment
  UC1199272  Wyethia longicaulis Joseph P. Tracy 1934-6-14 13218 Humboldt Horse Mountain 1371 Comment
  CHSC31279  Xerophyllum tenax Mark Stopher 1980-5-28 76 Humboldt On French Camp Ridge, 10 mi w of RTE 169 on Bald Hills Rd. 1000 Comment
  HSC98041  Xerophyllum tenax Cara Witte 2007-7-3 399 Humboldt National Forest 1. 1/2 mile from intersection with 6N35. 1484 Comment
  RSA12560  Xerophyllum tenax Carl B. Wolf 1934-7-2 5879 Humboldt Snow Camp. (Mountains east of Korbel). 1372 Comment
  HSC12700  Zeltnera muehlenbergii Jana Kattenhorn 1970-10-31 159 Humboldt Scotia Bluffs, N bank of Eel River Comment
  CAS-BOT-BC532733  Zigadenus micranthus Doris Kildale Gillespie 1931-6-7 10646 Humboldt South Fork Mt. Blake Lookout 1726 Comment
  HSC49625  Zostera marina R. York 1979-4-22 248 Humboldt Along bluffs just N of College Cove Comment



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