Search Results — 2000 specimen records retrieved (1356 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/cch_archive/).
 Records are made available under the CCH Data Use Terms.

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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  HSC102514  Abies concolor M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-28 1500 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1106 Comment
  HSC54516  Abies concolor Overton, Butler 1979-7-23 9432 Humboldt Near Horse Mtn., close to the town of Willow Creek 1478 Comment
  HSC76287  Abies concolor Denis Kearns 1981-7-22 306 Humboldt Near Whiteys Peak. 1487 Comment
  HSC99822  Abies concolor T. Jimerson, J. Pageau 1979-8-10 715 Humboldt Near Tish Tang A Tang Ridge 1463 Comment
  HSC45921  Abies grandis Jerome Peterson 1978-5-28 28 Humboldt HSC Campus, NW of Founders Hall Comment
  UC1193117  Abies grandis P. J. Zinke 1950-9-21 163 Humboldt Salmon Creek 1 mi upstream from Mill Creek Salmon Creek, Quad. 29C1 152 Comment
  UC502904  Abies grandis Joseph P. Tracy 1932-3-20 9781 Humboldt Trinidad Northern Coast Region, Trinidad 60 Comment
  UC667970  Abies grandis Joseph P. Tracy 1937-6-20 15354 Humboldt 10 mi up stream from the mouth Bear River 152 Comment
  CHSC32897  Abronia latifolia J. P. Smith; Advanced Taxonomy Class 1971-10-6 4946 Humboldt Dunes at the end of Murray Road in McKinleyville. Comment
  SD42285  Abronia latifolia Carl B. Wolf 1937-9-9 3064 Humboldt Coast, 2 miles south of Cape Mendocino 6 Comment
  UCD109784  Abronia latifolia Roman Gankin 1965-8-6 558 Humboldt 1.3 miles south of Samoa, Samoa Peninsula. Comment
  UC55523  Abronia latifolia P. E. Goddard 1901-8-6 180 Humboldt Regna Beach Comment
  RSA186842  Acaena novae-zelandiae T. C. Fuller 1966-10-4 15236 Humboldt 1 mile NW of Fieldbrook Comment
  SDSU2131  Acer circinatum Harvey 1938-8-14 2327 Humboldt US 299 Arcata - Willow Creek. Hayden Flat. Comment
  SEINET3026049  Acer circinatum John P. Young 1921-9-18 s.n. Humboldt Orick Comment
  UC902130  Acer circinatum Joseph P. Tracy 1949-8-4 18424 Humboldt near Mud Springs; Trinity Summit 1371 Comment
  UC1199016  Acer glabrum Joseph P. Tracy 1935-7-31 14394 Humboldt w side Devil's Backbone (barren rocky ridge connecting Trinity Summit with Salmon Summit); w side Devil's Backbone 1524 Comment
  HSC79478  Acer macrophyllum Kenneth Clark 1980-3-27 563 Humboldt Upper alluvial terrace of Dead Man's Gulch 76 Comment
  UC1585365  Acer macrophyllum R. Raiche, K. Zadnik, and H. Forbes 1989-10-2 UCBG 20 Humboldt on Hwy 299, 11.2 km e Hwy 101 (e of Arcata); e of Arcata Comment
  UC205627  Acer macrophyllum Joseph P. Tracy 1920-10-24 5404 Humboldt near Korbel (North Fork of Mad River); Northern Coast Ranges, North Fork of Mad River 60 Comment
  CHSC33061  Achillea millefolium James P. Smith 1973-5-26 6797 Humboldt Scotia Bluffs along the Eel River near Rio Dell, California. Railroad right-of-way. Comment
  BLMAR672  Achillea millefolium Jennifer Wheeler 2013-6-7 672 Humboldt King range, Windy Point 80 Comment
  CAS-BOT-BC28578  Achillea millefolium J. Clausen 1949-6-23 2159 Humboldt Benbow, 2 miles S of Garberville. Comment
  HSC79452  Achillea millefolium Kenneth Clark 1980-6-14 672 Humboldt On western slope above Dead Man's Gulch (near parking access) 145 Comment
  RSA416222  Achillea millefolium J. P. Smith, Thomas W. Nelson 1977-6-30 9221 Humboldt Samoa Peninsula just east of the drag strip. Comment
  UC203890  Achlys californica Joseph P. Tracy 1918-5-28 4951 Humboldt High Prairie on Bald Mt. Northern Coast Ranges, Bald Mt. 1066 Comment
  HSC48482  Achlys triphylla Brad Klipfel 1974-7-23 466 Humboldt Horse Mtn. area Comment
  HSC99382  Achlys triphylla subsp. triphylla K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-6-28 31 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  CAS-BOT-BC210650  Achnatherum lemmonii Joseph P. Tracy 1927-5-14 8000 Humboldt Trinity River Valley, near the South Fork 182 Comment
  SEINET201041  Achnatherum occidentale subsp. californicum J. P. Tracy, HE Parks 1934-6-27 11078 Humboldt Grouse Mtn N Coast Range 1433 Comment
  UC1222924  Achyrachaena mollis Joseph P. Tracy 1950-6-15 18811 Humboldt n 7 mi at Jenk's Ranch Harris; Mail Ridge Comment
  UCSB30617  Acmispon brachycarpus Edwards, David 1974-8-1 Humboldt Near W. bank of Mad River north of its junction with Puter Creek, ca. 300 yds. N. of fish hatchery, ca. 2 mi. SW. of Korbel 3 Comment
  JEPS60388  Actaea rubra Lincoln Constance 1934-6-1 771 Humboldt Bull Cr. rd. between Dyerville Bridge and Bull Cr. flat grove (mouth of Bull Creek) mouth of Bull Creek; Bull Creek Region, S. Fork Eel R. 45 Comment
  CDA24176  Actaea rubra subsp. arguta F. Wetherbee 1962-7-11 Humboldt Bear River Ridge. 0 Comment
  HSC4589  Adenocaulon bicolor Paul Shields Jun 1955 Humboldt 2 miles S. Weott Comment
  UC582522  Adenocaulon bicolor Joseph P. Tracy 1933-8-6 12940 Humboldt in shade of trees French Camp Ridge 1066 Comment
  CAS-BOT-BC62291  Adiantum aleuticum Carl B. Wolf 1927-8-28 1170 Humboldt On grade 9 mi. from Willow Creek, Lord Ellis Road to Blue Lake Comment
  HSC37414  Adiantum aleuticum Gary S. Lester, Roger L. Yearout, Judith G. Dickson 1974-7-24 508 Humboldt Along Lost Man Creek. 38 Comment
  HSC39158  Adiantum aleuticum D. E. Anderson, J. P. Smith 1971-6-28 - 1250 Humboldt 2.5 mi. S of Blue Lake along the Mad River Comment
  HSC956  Adiantum aleuticum H. E. Parks, S. T. Parks May 1930 749 Humboldt Along Van Duzen River Comment
  CAS-BOT-BC62290  Adiantum aleuticum Doris K. Kildale 1926-8-8 2448 Humboldt Bull Creek Flat Comment
  RSA15575  Adiantum aleuticum C. B. Wolf 1927-8-28 1170 Humboldt On grade 9 miles from Willow Creek, Lord Ellis Road to Blue Lake Comment
  CAS-BOT-BC65554  Adiantum capillus-veneris W. R. Dudley 1903-8-1 s.n. Humboldt Hot Springs (probably near Calif. Redwood Park) Comment
  HSC100384  Adiantum emarginatum Carl C. Marshall Jun 1887 429 Humboldt Jewett Creek. Comment
  UC1199008  Aesculus californica Joseph P. Tracy 1938-6-9 15873 Humboldt Dobbyn Creek 152 Comment
  HSC58167  Agastache urticifolia G. L. Clifton, Griswold 1979-8-2 12237 Humboldt Near Oregon Creek, close to the town of Hoopa 1663 Comment
  RSA167313  Agoseris aurantiaca Joseph P. Tracy 1949-8-7 18441 Humboldt Trinity Summit, meadow at Box Camp 1463 Comment
  UC205185  Agoseris aurantiaca var. aurantiaca Joseph P. Tracy 1919-9-23 5284 Humboldt Trinity Summit Northern Coast Ranges, Trinity Summit 1828 Comment
  CHSC10150  Agoseris grandiflora J. W. Johnson 1961-8-17 1004 Humboldt Arcata. Dune field, W. M. Lanphere Farm, Samoa Peninsula. Comment
  HSC74403  Agoseris grandiflora Gail Newton 1980-6-28 747 Humboldt Near Mad River Butte. 1536 Comment
  HSC74690  Agoseris grandiflora Gail Newton 1981-8-7 2464 Humboldt Near Board Camp Mtn. 1478 Comment
  HSC44088  Agoseris grandiflora Thomas W. Nelson, Jane P. Nelson 1977-9-3 3723 Humboldt N of Alder Springs 1555 Comment
  HSC63846  Agoseris grandiflora M. A. Baker 1979-6-25 914 Humboldt Comment
  UC1222927  Agoseris grandiflora Joseph P. Tracy 1950-6-15 18798 Humboldt 7 mi n, at Jenk's Ranch Harris; Mail Ridge Comment
  UC1222935  Agoseris grandiflora var. grandiflora Joseph P. Tracy 1951-6-24 19535 Humboldt Kneeland Prairie Kneeland Prairie 762 Comment
  UC1199117  Agoseris grandiflora var. grandiflora J. P. Tracy 1901-7-7 1215 Humboldt immediate vicinity of, on Eureka Streets Eureka 0 Comment
  HSC79419  Agoseris heterophylla Kenneth Clark 1980-4-18 582 Humboldt On Coastal Bluffs above Dead Man's Gulch 137 Comment
  UC582747  Agoseris heterophylla var. heterophylla Joseph P. Tracy 1930-6-21 8775 B Humboldt Larrabee Valley; Northern Coast Ranges 701 Comment
  UC165754  Agoseris heterophylla var. heterophylla Joseph P. Tracy 1909-8-1 3070 Humboldt edge of grain field Kneeland Prairie; Northern Coast Ranges 762 Comment
  HSC8836  Agrostis densiflora D. C. Juve 1964-5-16 41 Humboldt Camp Tish-Tang, Campbell Creek Ranger Station, off Hwy 96 Comment
  RSA10025  Agrostis densiflora Joseph P. Tracy 1927-7-17 8271 Humboldt Three Cabins; Chaparral Mountain Comment
  CAS-BOT-BC127285  Agrostis exarata William Arents Silveus 1938-7-10 2969 Humboldt Eureka. Comment
  CAS-BOT-BC127289  Agrostis exarata H. S. Yates 1936-6-16 5664 Humboldt 1 mile southwest of Samoa. 6 Comment
  SEINET200945  Agrostis exarata Joseph P. Tracy 1912-7-21 3785 Humboldt Alton. Northern Coast Region. 30 Comment
  SEINET4558396  Agrostis exarata J. P. Tracy 1902-1 1757 Humboldt Immediate vicinity of Eureka 152 Comment
  UC1103372  Agrostis exarata Joseph P. Tracy 1902-6-20 1754 1/2 Humboldt Eureka Northern Coast Region, Eureka 0 Comment
  UC552751  Agrostis exarata Joseph P. Tracy 1934-7-2 13296 Humboldt Trinidad 3 Comment
  UCD52382  Agrostis exarata H. E. and S. T. Parks Jun and Jul 1952 7553 Humboldt Spruce Cove, Trinidad. 60 Comment
  SEINET200934  Agrostis gigantea Joseph P. Tracy 1902-7-4 1758 Humboldt Eureka 0 Comment
  CAS-BOT-BC139501  Agrostis hallii A. G. Vestal 1937-6-23 s.n. Humboldt Orick. Comment
  UC187289  Agrostis hallii J. P. Tracy 1901-6-30 1213 Humboldt immediate vicinity Eureka 0 Comment
  UC188851  Agrostis hallii Joseph Burtt Davy 1899-6-16 5564 Humboldt Alton Comment
  UCD52715  Agrostis hallii R. Tofsrud 1949-7-1 s.n. Humboldt between Scotia and Capetown. Comment
  UC186902  Agrostis microphylla Joseph P. Tracy 1900-7-4 875 Humboldt Ocean Beach at Humboldt; Northern Coast Region, Ocean Beach, Humboldt Bay Comment
  UC36960  Agrostis microphylla Harley P. Chandler May, 1901 1253 Humboldt Redwood Belt North Coast Ranges, Redwood Belt 304 Comment
  CAS-BOT-BC138632  Agrostis stolonifera Joseph P. Tracy 1927-7-16 8253 Humboldt Northern Coast Ranges. Around Humboldt Bay. Mouth of Elk River. 6 Comment
  CDA28152  Agrostis stolonifera H. D. Bowers Sep 1938 s.n. Humboldt Nr Beatrice. 0 Comment
  RSA10066  Agrostis stolonifera Joseph P. Tracy 1932-8-21 10363 Humboldt Three Cabins, on lower western foothills of Chaparral Mountain; North Coast Range 457 Comment
  UC526890  Agrostis viridis Joseph P. Tracy 1926-7-4 7697 Humboldt near South Fork; Northern Coast Ranges, Trinity River Valley 182 Comment
  HSC33763  Aira caryophyllea John S. Palmer 1975-5-24 369 Humboldt Off Samoa Blvd., across from boat landing Comment
  UCD55700  Aira caryophyllea Joseph P. Tracy 1950-6-15 18814 Humboldt near Huestis Rock, on Harris Road, 6 miles southeast of Fruitland. 914 Comment
  UC1198269  Alisma plantago-aquatica Joseph P. Tracy 1930-10-12 9214 Humboldt Alton to Fortuna (on gravel bars); Eel River 15 Comment
  HSC2883  Alisma triviale Paul Shields 1955-9-23 Humboldt 5 mi. SE of Arcata Comment
  HSC60375  Alisma triviale J. M. DiTomaso 1979-5-29 1077 Humboldt Arcata Bottoms, 1.7 mi. W of Alliance Rd. on Lanphere Rd. Comment
  SEINET199675  Allium amplectens J. P. Tracy 1936-6-17 14975 a Humboldt Little Van Duzen River at hwy crossing 0 Comment
  UC1198198  Allium bolanderi Joseph P. Tracy 1936-6-10 14923 Humboldt mountain slopes w mouth of South Fork of Trinity River; South Fork of Trinity River 304 Comment
  HSC2937  Allium falcifolium D. E. Anderson 1965-6-1 3772 Humboldt Along Friday Ridge Rd. 2 mi. NE of its junction with Titlow Hill Rd. 1159 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
  HSC71842  Allium hoffmanii Thomas W. Nelson, Jane P. Nelson 1980-6-27 5947 Humboldt Along low ridge NE of small vernal pond at N base of Red Lassic 1677 Comment
  UC1196540  Allium triquetrum H. E. Peacock 1942-4-6 Humboldt Ferndale 15 Comment
  CAS-BOT-BC476629  Allium unifolium M. S. Jessel 1931-5-2 s.n. Humboldt 6 miles from Garberville Comment
  SEINET199681  Allium validum Joseph P. Tracy 1930-7-16 8922 Humboldt South Fork Mountain at McKay Camp. 1676 Comment
  HSC100547  Allium validum Carl C. Marshall May 1886 233 Humboldt Wood's Pasture near Arcata. Comment
  UC666890  Allium validum Joseph P. Tracy 1930-7-16 8922 Humboldt meadow at McKay's Camp South Fork Mountain, McKay's Camp 1676 Comment
  HSC100703  Allocarya diffusa Carl C. Marshall Jun 1887 465 Humboldt Harris and Garberville Rd. Comment
  SEINET5536121 Image available Alnus rhombifolia Joseph P. Tracy 1950-1 19375 Humboldt Klamath River near Slate Creek 122 Comment
  BLMAR265  Alnus rubra Jennifer Anthony-Wheeler 1999-6-16 265 Humboldt Headwaters Forest Reserve, throughout reserve esp. by rdsides 0 Comment
  CAS-BOT-BC169532  Alnus rubra Doris K. Kildale 1926-7-11 2363 Humboldt Capetwon, near mouth of Bear River. Near coast Comment
  CAS-BOT-BC169537  Alnus rubra Doris K. Kildale 1928-2-17 4273 Humboldt Patricks Point Comment
  CAS-BOT-BC169545  Alnus rubra Joseph P. Tracy 1930-7-27 9113 Humboldt Mattole River, near Petrolia 15 Comment
  HSC3435  Alnus rubra Francis Winter 1960-3-26 Humboldt Samoa Peninsula 6 mi. W of Arcata Comment
  POM212075  Alnus rubra C. B. Wolf 1930-10-26 1967 Humboldt south edge of Big Lagoon, near the Redwood highway bridge. 3 Comment
  RSA778734  Alnus rubra Lyman Benson 1928-7-10 430 Humboldt Clam Beach, Trinidad. 12 Comment
  SEINET197713  Alnus rubra J. M. Tucker 1948-9-5 1865 Humboldt Along Hwy 101 3 mi S of Scotia Comment
  UC630536  Alnus rubra H. E. and S. T. Parks 1938-4-1 24126 Humboldt Spruce Cove Trinidad 60 Comment
  HSC58068  Alnus viridis subsp. sinuata G. L. Clifton, Griswold 1979-8-1 11950 Humboldt Near Mill Creek Lakes, close to the town of Hoopa. 1692 Comment
  HSC8896  Alopecurus pratensis W. F. Cartwright 1965-5-20 78 Humboldt 5 mi. S of Arcata on Old Arcata Rd. Comment
  UCD55810  Alopecurus pratensis R. Tofsrud 1948-7-1 s.n. Humboldt Scotia. Comment
  UCD55914  Alopecurus saccatus A. A. Beetle; J. P. Tracy, G. L. Stebbins 1942-6-2 3464 Humboldt 1 mile E of Alton. Comment
  CAS-BOT-BC13705  Ambrosia chamissonis H. E. Parks 1941-8-1 24181 Humboldt Big Lagoon Comment
  CAS-BOT-BC13710  Ambrosia chamissonis Carl B. Wolf 1927-8-29 1213 Humboldt Devil's Gate, south of Cape Mendocino. Comment
  CAS-BOT-BC13711  Ambrosia chamissonis David D. Keck 1935-6-16 3385 Humboldt Mouth of Little River. Comment
  HSC46976  Ambrosia chamissonis J. P. Smith, Thomas W. Nelson 1977-6-30 9224 Humboldt Samoa Peninsula just E of the drag strip 6 Comment
  HSC56096  Amelanchier pallida G. L. Clifton 1979-7-31 11803 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  HSC56196  Amelanchier pallida Gilbert Muth 1979-8-1 12140 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1677 Comment
  OBI35862  Amelanchier utahensis David J. Keil 1983-7-2 17332 Humboldt Horse Mtn Summit SW of Willow Crk Comment
  UC1198747  Amelanchier utahensis Joseph P. Tracy 1947-8-24 17900 Humboldt at edges Box Camp Meadow (near Box Camp); Trinity Summit 1463 Comment
  UCR32077  Amelanchier utahensis David J. Keil 1983-7-2 17332 Humboldt Horse Mountain Summit SW of Willow Creek 1509 Comment
  UC494005  Amsinckia H. E. Parks, J. P. Tracy 1930-5-25 881 Humboldt near Bridgeville Comment
  UC1191079  Amsinckia eastwoodiae H. E. Parks March, 1933 4283 Humboldt Spruce Cove Trinidad Comment
  UC54750 Image available Amsinckia intermedia Mrs. M. H. Manning 1901-1 156 Humboldt near Hupa; ; near Hupa Comment
  UC545822  Amsinckia menziesii var. menziesii H. E. Parks March, 1933 4282 Humboldt Trinidad Comment
  HSC17822  Anagallis arvensis D. K. Smith 1968-3-2 7 Humboldt Plaza Ave., Arcata Comment
  CAS-BOT-BC45131  Anaphalis margaritacea Alice Eastwood 1923-8-14 12304 Humboldt Samoa Comment
  HSC37358  Anaphalis margaritacea Gary S. Lester, Roger L. Yearout, Judith G. Dickson 1974-7-24 489 Humboldt Along Lost Man Creek. 38 Comment
  RSA247393  Anaphalis margaritacea Gary D. Wallace 1966-9-12 702 Humboldt Along Hwy. 299 E of Arcata near Willow Creek; Comment
  HSC4629  Anaphalis margaritacea Paul Shields 1955-9-22 Humboldt 12 miles NW of Arcata Comment
  SEINET2030725 Image available Anaphalis margaritacea H. E. Parks, S. T. Parks 24237 Humboldt Along highway, Stone Lagoon. Comment
  HSC74292  Anemone deltoidea M. A. Baker 1980-7-22 3079 Humboldt Near Salmon Mtn. 1820 Comment
  JEPS14236  Angelica genuflexa Joseph P. Tracy 1940-9-26 16725 Humboldt Near south city limits Eureka. 6 Comment
  UC642308  Angelica hendersonii Joseph P. Tracy 1938-8-28 16134 Humboldt Trinidad 3 Comment
  HSC10102  Anthoxanthum occidentale E. W. Styskel 1963-4-20 19 Humboldt 3 mi SE of Korbel on Snow Camp Rd. 290 Comment
  CAS-BOT-BC137741  Anthoxanthum odoratum Harley P. Chandler 1901-5-1 1106 Humboldt North Coast Ranges. Humboldt Bay. 30 Comment
  RSA54142  Antirrhinum vexillocalyculatum subsp. breweri H. M. Pollard 1945-8-31 s.n. Humboldt Orleans to Somes Bar, east side of Klamath River. Comment
  UC1196738  Antirrhinum vexillocalyculatum subsp. breweri Joseph P. Tracy 1900-9-9 955 Humboldt near Hydesville (gravel bar of Yager Creek); Northern Coast Region, Yager Creek 60 Comment
  JEPS45613  Aphanes occidentalis W. L. Jepson 1921-8-7 9337 a Humboldt Stone Lagoon; Humboldt Coast Comment
  UC1198744  Aphanes occidentalis Joseph P. Tracy 1940-4-7 16529 Humboldt near Samoa; Humboldt Bay 6 Comment
  HSC58067  Apocynum androsaemifolium G. L. Clifton, Griswold 1979-8-1 11946 Humboldt Near Mill Creek Lakes, close to the town of Hoopa. 1692 Comment
  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
  HSC73735  Arabis glabra M. A. Baker 1980-7-22 3085 Humboldt Near Salmon Mtn. 1820 Comment
  UC1198312  Arabis glabra Joseph P. Tracy 1947-7-5 17815 Humboldt near Box Camp; Trinity Summit 1524 Comment
  HSC57630  Arabis holboellii var. retrofracta G. L. Clifton, Terry Griswold 1979-7-25 10778 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1814 Comment
  UC154135  Aralia californica P. E. Goddard 1901-7-12 78 Humboldt Hupa Comment
  HSC98778  Aralia californica Cara Witte 2007-7-25 579 Humboldt Forest Service Road 5N10. Approximately 2 miles south from intersection with Forest Service Road 5N41. 1290 Comment
  CAS-BOT-BC128695  Arbutus menziesii Doris K. Kildale 1927-5-7 3109 Humboldt Elk Ridge near Eel Rock Comment
  CAS-BOT-BC128699  Arbutus menziesii Doris K. Kildale 1927-4-17 3091 Humboldt Briceland Bridge 1/2 mile west of Garberville 114 Comment
  UC1389155  Arctostaphylos A. E. Wieslander 1931-5-17 2567 Humboldt Orick-Orleans rd Hoopa Quadrangle, Bald Hills Comment
  UC585951  Arctostaphylos Joseph P. Tracy 1932-7-12 10474 Humboldt head of Brett Hole Trinity Summit 1828 Comment
  CAS-BOT-BC25210  Arctostaphylos canescens subsp. canescens J. P. Tracy 1941-4-8 16850 Humboldt Willow Creek Canyon, along Trinity Highway Comment
  CAS-BOT-BC25211  Arctostaphylos canescens subsp. canescens J. P. Tracy 1927-5-15 8058 Humboldt Hoopa Mountain. On road W from Hoopa Valley Comment
  BLMAR176  Arctostaphylos columbiana Donald Hazlett 1994-6-7 176 Humboldt King range, near horse Mt. Ridge rd 670 Comment
  CAS-BOT-BC23730  Arctostaphylos columbiana Joseph P. Tracy 1937-7-17 15439 Humboldt Eureka 45 Comment
  CAS-BOT-BC23731  Arctostaphylos columbiana B. A. Stein 1981-11-1 567 Humboldt US Hwy 101 2 miles north of Patrick Poing 60 Comment
  CAS-BOT-BC23745  Arctostaphylos columbiana Doris K. Kildale 1926-8-22 2586 Humboldt Wiregrass Prairie on road from Orick to Martin's Ferry 716 Comment
  CAS-BOT-BC23753  Arctostaphylos columbiana Doris K. Kildale 1927-1-30 2899 Humboldt Big Lagoon, coastal terrace Comment
  CAS-BOT-BC23778  Arctostaphylos columbiana P. C. Everett; E. K. Balls 1959-10-26 23975 Humboldt 4 mi. SE from Honeydew, along Old Coast road to Ettersburg. 457 Comment
  CAS-BOT-BC23816  Arctostaphylos columbiana Joseph P. Tracy 1936-8-24 15171 Humboldt Fickle Hill, 6 mi. SE of Arcata 609 Comment
  CAS-BOT-BC23817  Arctostaphylos columbiana Joseph P. Tracy 1935-2-9 13710 Humboldt Big Lagoon 30 Comment
  CAS-BOT-BC23819  Arctostaphylos columbiana Joseph P. Tracy 1936-8-2 15075 Humboldt French Camp Ridge 1066 Comment
  JEPS19867  Arctostaphylos columbiana Joseph P. Tracy 1923-2-18 6142 Humboldt Patrick's Point Northern Coast Ranges 30 Comment
  JEPS38611  Arctostaphylos columbiana W. L. Jepson 1921-8-11 9410 Humboldt Big Lagoon 15 Comment
  RSA622679  Arctostaphylos columbiana Jon E. Keeley, John Sawyer 1996-10-12 27677 Humboldt Along Highway 101 at edge of cutover redwood forest, 6 km south of Drury Scenic Parkway and Prairie Creek Redwoods State Park, north of Eureka. 320 Comment
  RSA622681  Arctostaphylos columbiana Jon E. Keeley 1996-10-13 27787 Humboldt Bald Hills Road, eastern end of Redwood National Park, 20-23 km west of Highway 96, north of Eureka. 600 Comment
  UC535005  Arctostaphylos columbiana H. E. Parks December 1931 4950 Humboldt Hobson's Trinidad 60 Comment
  UCD50759  Arctostaphylos columbiana Roman Gankin; Richard Hildreth 1967-10-26 1169 Humboldt 20 road miles east of Hwy. 101 on Bald Hills Road (from Orick). Comment
  RSA15551  Arctostaphylos columbiana var. columbiana C. B. Wolf 1927-8-30 1241 Humboldt Paradise, 5 or 6 miles N of Ettersburg. Comment
  UC1193023  Arctostaphylos glandulosa subsp. glandulosa R. E. Nelson 1950-7-26 146 Humboldt 1/2 mi nw Neafus Peak; Quad. 29D1 762 Comment
  RSA632805  Arctostaphylos knightii Jon E. Keeley 1996-10-13 27795 Humboldt Bald Hills Road, eastern end of Redwood National Park, 20-23 km west of Highway 96, north of Eureka. 600 Comment
  HSC37830  Arctostaphylos manzanita Thomas W. Nelson, Jane P. Nelson 1976-2-21 2253 Humboldt Tish-Tang campground Comment
  RSA633014  Arctostaphylos manzanita Jon E. Keeley 1996-10-13 27807 Humboldt Salyer Rest Area, east of Salyer, east of Willow Creek on Highway 299. 200 Comment
  RSA633017  Arctostaphylos manzanita Jon E. Keeley 1996-10-13 27811 Humboldt Salyer Rest Area, east of Salyer, east of Willow Creek on Highway 299. 200 Comment
  RSA633022  Arctostaphylos manzanita Jon E. Keeley 1996-10-13 27802 Humboldt Highway 96, 15 km north of Willow Creek. 100 Comment
  CAS-BOT-BC24363  Arctostaphylos manzanita subsp. manzanita R. N. Raynor 1935-3-1 s.n. Humboldt Fort Seward. Comment
  CAS-BOT-BC24372  Arctostaphylos manzanita subsp. manzanita Doris K. Kildale 1927-6-25 3583 a Humboldt Near Ettesburg. Comment
  CAS-BOT-BC38829  Arctostaphylos manzanita subsp. manzanita Joseph P. Tracy 1930-8-3 9141 Humboldt Dinsmore's Ranch: On Van Duzen River opposite Buck Mountain. 670 Comment
  RSA152312  Arctostaphylos manzanita subsp. manzanita Joseph P. Tracy 1942-9-6 17306 Humboldt Dinsmore's along Van Duzen River, opposite Buck Mountains. 762 Comment
  RSA46696  Arctostaphylos manzanita subsp. manzanita Doris K. Kildale 1927-6-25 3583 Humboldt Ettersburg Comment
  UC1174949  Arctostaphylos manzanita subsp. manzanita P. C. Everett and E. K. Balls 1959-10-24 23954 Humboldt 6.8 mi sw from Siskiyou-Humboldt Co. line (Somesbar to Orleans) 152 Comment
  HSC102569  Arctostaphylos nevadensis M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-29 1556 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1579 Comment
  UC1196873  Arctostaphylos nevadensis Joseph P. Tracy 1927-6-12 8132 1/2 Humboldt Horse Mountain 1432 Comment
  CAS-BOT-BC40064  Arctostaphylos nevadensis subsp. knightii Joseph P. Tracy 1934-3-11 13160 Humboldt French Camp Ridge 1066 Comment
  HSC99394  Arctostaphylos nevadensis subsp. nevadensis K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-6-28 43 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  CAS-BOT-BC43985  Arctostaphylos uva-ursi Joseph P. Tracy 1945-5-10 17506 Humboldt Eureka 45 Comment
  CAS-BOT-BC43994  Arctostaphylos uva-ursi Philip A. Munz 1954-7-25 19876 Humboldt in Coastal Strand Community, at Humboldt Lighthouse south of Samoa Comment
  CAS-BOT-BC47212  Arctostaphylos uva-ursi John Thomas Howell 1954-4-25 29157 Humboldt Little River. Comment
  HSC31470  Arctostaphylos uva-ursi Steve Selva 1974-8-28 91 Humboldt Approx. 5 mi. S of Arcata on the Samoa Peninsula Comment
  SD41456  Arctostaphylos uva-ursi Edith A. Purer 1932-7-27 4136 Humboldt Samoa, near Arcata Comment
  SEINET11984848  Arctostaphylos uva-ursi Unknown 1965-1 555 Humboldt 1.3 mi S of Samoa, Samoa Peninsula Comment
  RSA246678  Arctostaphylos uva-ursi var. coactilis R. F. Thorne, Percy C. Everett, K. Thorne 1965-8-5 35148 Humboldt Samoa Dunes. 3 Comment
  SEINET11987161  Arctostaphylos uva-ursi var. coactilis J. Sigg, McClintock, E.; Knight, W.; Knight, I. 1981-1 4071 Humboldt Strybing Arboretum, Golden Gate Park, San Francisco, orig. probably from near Samoa Comment
  HSC76329  Arctostaphylos viscida Teresa Prendusi 1981-7-9 208 Humboldt Near Cedar Camp 1268 Comment
  UCR45350  Arenaria macrophylla Barry Silver 1986-4-23 544 Humboldt North Coast Range, Bair Road, 9.5-10 mi NW of the junction with Hwy 299; Pine Ridge Summit Area 997 Comment
  SEINET200929  Aristida oligantha J. P. Tracy 1919-9-15 5222 Humboldt Northern Coast Ranges; valley of Trinity River near mouth of Willoe Creek 152 Comment
  UC562472  Armeria maritima subsp. californica Joseph P. Tracy 1927-6-8 8115 Humboldt Trinidad; sandy slopes facing ocean 3 Comment
  SEINET10537845  Armeria maritima subsp. californica Mary Susan Taylor 1990-8-22 Taylor 6083 Humboldt Samoa Recreation Area on Samoa Peninsula, Staging Area, Eureka. Coastal scrub in ORV area. Comment
  UC275462  Arnica cernua Joseph P. Tracy 1925-6-7 7057 Humboldt near Ruby Creek; Northern Coast Ranges, Willow Creek Canyon 609 Comment
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Feb 27 2007
  UC302176  Arnica cernua Joseph P. Tracy 1926-5-2 7449 Humboldt near Ruby Creek; Northern Coast Ranges, Willow Creek Canyon 609 Comment
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Feb 27 2007
  CAS-BOT-BC82425  Arnica discoidea Joseph P. Tracy 1935-7-23 14154 Humboldt Trinity Summit, lower end of Brett Hole 1584 Comment
  UC129316  Arnica discoidea Joseph Burtt Davy and Walter C. Blasdale 1899-7-19 5668 Humboldt Hoopa Mt. North-Western California, Hoopa Mt. Comment
  SEINET11837693  Arnica latifolia J. P. Tracy 1942-1 17236 Humboldt Trinity Summit, near Box Camp 1524 Comment
  UC1103325  Arrhenatherum elatius Joseph P. Tracy 1927-9-25 8369 Humboldt Northern Coast Ranges, Eureka Eureka; Northern Coast Ranges, Eureka 0 Comment
  CAS-BOT-BC84833  Artemisia douglasiana Carl B. Wolf 1927-8-29 1203 Humboldt Near mouth of Bear River, Capetown Comment
  SBBG7639  Artemisia douglasiana H. and M. Dearing 1939-5-26 3452 Humboldt N of Arcata Comment
  CAS-BOT-BC93860  Artemisia dracunculus A. A. Heller 1924-7-20 I 3865 Humboldt In sand along the Eel River at Phillipsville Comment
  HSC4743  Artemisia pycnocephala Jerry Parker 1968-11-22 247 Humboldt Mckinleyville Beach, Foot of Murray Rd. Comment
  JEPS17992  Artemisia pycnocephala George B. Rossbach 1955-6-10 513 Humboldt near lagoon and lighthouse Humboldt Bay (between Fairhaven and end of sandy point off Eureka) Comment
  JEPS103030  Artemisia suksdorfii R. Raiche, H. Forbes, A. C. Carmichael 1999-10-18 UCBG 24 Humboldt 18 miles NW of Honeydew on Mattole Rd., in sight of the ocean along the Mattole River 46 Comment
  RSA15560  Artemisia suksdorfii C. B. Wolf 1927-8-29 1220 Humboldt Devils' Gate, S of Cape Mendocino. Comment
  JEPS45626  Aruncus dioicus var. pubescens Joseph P. Tracy 1916-6-25 4749 Humboldt e of Trinidad (Redwood Creek); Northern Coast Ranges 152 Comment
  UC154505  Aruncus dioicus var. pubescens Harley P. Chandler Jun 1901 1527 Humboldt Klamath River; North Coast Region 426 Comment
  HSC100257  Arundo donax J. P. Smith 2009-8-3 12642 Humboldt Along Hwy. 254 in Pepperwood. 51 Comment
  HSC57024  Asarum caudatum Overton, Butler 1979-7-24 9641 Humboldt Near Friday Camp, close to the town of Willow Creek. 1250 Comment
  HSC58082  Asarum caudatum G. L. Clifton, Griswold 1979-8-1 11986 Humboldt Near Mill Creek Lakes, close to the town of Hoopa 1707 Comment
  HSC98560  Asarum caudatum Cara Witte 2008-6-13 727 Humboldt Forest Service Road 4N32. 1 mile south of intersection with Forest Service Road 4N32E. 1455 Comment
  SEINET3873461  Asarum caudatum Richard R. Halse 2011-3-25 8163 Humboldt Along U.S. Hwy 101 ca 2.8 miles south of Stafford, near Exit 674.; 0 74 Comment
  UC6169  Asarum caudatum Harley P. Chandler May 1901 1267 Humboldt Redwood Belt 457 Comment
  UC672846  Asarum caudatum Joseph P. Tracy 1935-7-23 14160 Humboldt Trinity Summit, lower end of Brett Hole 1584 Comment
  CAS-BOT-BC400540  Asarum caudatum C. C. Harris; S. K. Harris 1936-6-14 652 Humboldt On Yager Road from Carlotta 457 Comment
  HSC62996  Asarum caudatum David Wheeler 1979-5-9 100 Humboldt Humboldt State University campus, 1/4 mi. E of the dorms along Jolly Giant Creek Comment
  SD58206  Asarum caudatum Lincoln Constance 1934-6-2 774 Humboldt Bull Creek Region, South Fork Eeel River, Bull Creek road to mouth of Bull Creek and up Bull Creek Comment
  SEINET12094120  Asarum caudatum F. H. Utech 1988-1 88 -282 Humboldt Bridgeville to Dinsmore on CA 36 800 Comment
  UCD137836  Asarum caudatum Suzanne E. May 1967-4-15 21 Humboldt on Kneeland Road, 5 miles east of Bridgeville. 243 Comment
  HSC98884  Asclepias speciosa Cara Witte 2007-7-3 406 Humboldt White Oak Opening. 1242 Comment
  HSC100387  Aspidium munitum Carl C. Marshall May 1884 33 Humboldt Bear River. Comment
  HSC55067  Aspidotis densa G. L. Clifton, Griswold 1979-7-31 11647 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1719 Comment
  CAS-BOT-BC65947  Aspidotis densa D. H. Norris 1970-5-20 12183 Humboldt on Big Hill Road east of Hoopa Comment
  HSC44046  Aspidotis densa Thomas W. Nelson, Jane Nelson 1977-7-1 3547 Humboldt On Ridge N of Bear Cr. 100 m W of Rd. 1S07 1555 Comment
  RSA44512  Aspidotis densa Henry M. Pollard 1948-7-29 1 Humboldt Woodson Mine near Orleans Comment
  RSA47130  Aster alpigenus Doris K. Kildale 1925-8-16 1195 Humboldt Trinity Summit 1829 Comment
  HSC100424  Aster foliaceus Carl C. Marshall Sep 1886 247 Humboldt Everywhere. Comment
  CAS-BOT-BC177275  Astragalus R. C. Barneby 1954-5-19 11570 Humboldt On Henry Tosteon Ranch near Bear Butte about 4 mi. s. of Miranda 762 Comment
  CAS-BOT-BC193131  Astragalus rattanii var. rattanii Volney Rattan s.n. Humboldt Bug Creek Comment
  CAS-BOT-BC200853  Astragalus umbraticus Volney Rattan 1878-1-1 s.n. Humboldt Unspecified Comment
  RSA167271  Astragalus umbraticus Joseph P. Tracy 1940-8-25 16706 Humboldt Bald Mountain; ''Lake Prairie''. 1066 Comment
  POM319593  Athyrium filix-femina subsp. cyclosorum Patricia Wilder 1968-8-21 4383 Humboldt Bog in Big Lagoon park, just west of Highway 101 2 Comment
  HSC10342  Athyrium filix-femina var. cyclosorum W. R. Supernaugh, Jr. 1964-12-12 8 Humboldt 1 mi. W of Freshwater Corners on Old Arcata Rd on S side of Hwy. Comment
  HSC47798  Avena barbata Michael A. Watkins 1978-6-10 4 Humboldt Arcata, E side of the 7th Street overpass to Hwy. 101 Comment
  RSA10054  Avena barbata Joseph P. Tracy 1933-5-20 12228 Humboldt 3 mi south of point of Cape Mendocino 3 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
  HSC9024  Avena fatua W. F. Nickel 1965-5-16 Humboldt N Arcata next to the Humboldt Motor Hotel. Comment
  RSA246915  Azolla filiculoides Robert F. Thorne, Percy C. Everett 1965-8-9 35325 Humboldt Clam Beach County Park: along highway. 3 Comment
  HSC5123  Baccharis douglasii W. L. Jepson 1932-7-24 16391 Humboldt Tooey Ranch, Garberville Comment
  UC164794  Baccharis glutinosa J. P. Tracy 1900-9-3 937 Humboldt immediate vicinity of Eureka 0 Comment
  JEPS32397  Baccharis glutinosa W. L. Jepson 1936-8-11 17867 Humboldt spot on mountainside, Philipsville South Fork Eel River Comment
  POM126120  Baccharis pilularis Joseph P. Tracy 1923-10-6 6565 Humboldt Eureka Comment
  UC249855  Baccharis pilularis Joseph P. Tracy 1923-10-6 6565 Humboldt Eureka, around Humboldt Bay Eureka, Humboldt Bay 30 Comment
  HSC48865  Barbarea orthoceras Brad Klipfel 1973-6-10 58 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  UC275273  Barbarea orthoceras Joseph P. Tracy 1923-6-17 6272 Humboldt Big Lagoon 6 Comment
  HSC7002  Barbarea verna W. F. Nickel 1965-4-22 Humboldt HSU campus between the Wildlife and Biological Science buildings Comment
  CAS-BOT-BC106354  Bellis perennis W. R. Dudley 1899-1-1 s.n. Humboldt Arcata Comment
  SFV18538  Bellis perennis M. Cavelti 2002-5-4 34 Humboldt On A street off 11th street, along western side of road. 20 Comment
  CAS-BOT-BC75685  Berberis nervosa H. E. McMinn 1922-8-4 336 Humboldt Along Van Duzen River. Comment
  OBI33907  Berberis pinnata subsp. pinnata David J. Keil 1983-7-2 17320 Humboldt Ca. 4 mi SE of SR 299 along Titlow Hill rd below Horse Mtn Summit Rd Comment
  UC62521  Blechnum spicant Marshall A. Howe 1896-5-30 Humboldt Eureka Comment
  UC672887  Blechnum spicant Joseph P. Tracy 1940-8-25 16718 Humboldt Bald Mt. 975 Comment
  HSC986  Blechnum spicant R. A. Eagle 1964-5-15 41 Humboldt H. S. C. campus, trail to Jolly Giant parking lot Comment
  UCSB30622  Blechnum spicant Edwards, David 1974-9-2 Humboldt South side of dirt road in "Arcata Community Forest" ca. 0.5 miles from junction with Fickle Hill Rd., ca. 0.25 miles E of junction of Park Ave. and Fickle Hill Rd., Arcata. 97 Comment
  UC1133575  Bolboschoenus maritimus H. S. Yates 1936-6-16 5673 Humboldt 1 mi ne Samoa; Eureka Quad., ne of Samoa Comment
  CHSC96445  Bolboschoenus maritimus subsp. paludosus Gordon Leppig 1999-10-25 1268 Humboldt State Highway 101, mile marker 61.40. UTM zone 10, 4519N, 406 E. 2 Comment
  UC1478440  Botrychium multifidum Keith Curry 1974-1 Humboldt 5 mi s Trinidad (roadside rest Hwy. 101) Comment
  UC492218  Boykinia major Joseph P. Tracy Jul 16 1930-Jul 19 1930 8935 Humboldt South Fork Mountain Northern Coast Ranges, South Fork Mountain (in wet meadow at McKay Camp) 1676 Comment
  CAS-BOT-BC420266  Boykinia occidentalis L. R. Abrams 1922-6-25 8285 Humboldt Big Lagoon south of Orick Comment
  HSC37396  Boykinia occidentalis Gary S. Lester, Roger L. Yearout, Judith G. Dickson 1974-7-24 510 Humboldt Along Lost Man Creek. 38 Comment
  POM232051  Boykinia occidentalis Roxana S. Ferris 1937-8-21 9390 Humboldt Cleft in cliff above beach. Shelter Cove. Comment
  RSA245258  Boykinia occidentalis Norman Dennis 1965-6-3 145 Humboldt Big Lagoon County Park SW corner of Big Lagoon. Comment
  RSA32653  Boykinia occidentalis Doris K. Kildale 1925-6-17 701 Humboldt [Unspecified] Comment
  RSA466750  Boykinia occidentalis Thekla Mohr s.n. Humboldt Eel River. Humboldt and Mendocino Cos. Comment
  UC11310  Boykinia occidentalis H. N. Bolander June 1867 6529 Humboldt Comment
  HSC28192  Brassica rapa Thomas W. Nelson 1971-4-12 373 Humboldt Hookton Rd. at the junction of Copenhagen Rd. Comment
  HSC6589  Brassica rapa D. E. Anderson 1962-1-31 1909 Humboldt Blue Lake, near oxidation pond Comment
  UC165031  Brickellia californica Joseph P. Tracy 1900-9-10 960 Humboldt near Hydesville; Northern Coast Region, Van Duzen River 60 Comment
  CHSC31284  Briza maxima Mark Stopher 1980-5-16 68 Humboldt Along Hwy 101 near jct with Elk River, s of Eureka. Comment
  SEINET14395468  Briza maxima K. W. Parker 1931-5-15 1003 Humboldt 2 mi N of Blocksburg Comment
  HSC37934  Briza minor Peter Sorensen 1976-6-4 Humboldt N Spit of Humboldt Bay, S of Samoa near Humboldt County Airport Comment
  HSC9101  Briza minor Paul Shields Aug 1955 Humboldt 2 mi. S of Weott Comment
  SBBG10871  Brodiaea elegans subsp. elegans D. E. Breedlove 1961-7-4 650 Humboldt 10.9 mi W of Willow Crk on US Hwy 299 822 Comment
  HSC35816  Brodiaea elegans subsp. elegans Thomas W. Nelson, Jane P. Nelson, James Nelson 1975-6-20 1920 Humboldt Above Goat Rock, 2 mi. W of Bridgeville Comment
  POM160834  Brodiaea stellaris Joseph P. Tracy 1923-7-4 6526 Humboldt Valley of South Yager Creek. 762 Comment
  RSA167289  Bromus carinatus Joseph P. Tracy 1951-6-26 19570 Humboldt Twin Lakes vicinity, Snow Camp and Twin Lakes trip. Comment
  BLMAR29  Bromus carinatus var. carinatus Brad Barr June, 1982 29 Humboldt King range, Spanish ridge facing south Comment
  HSC58761  Bromus carinatus var. carinatus Walter Overton, Marvin Butler 1979-7-26 10101 Humboldt Near Cold Spring, close to the town of Willow Creek. 1417 Comment
  UC1103274  Bromus carinatus var. carinatus J. P. Tracy 1900-7-4 883 Humboldt opposite Eureka (Ocean Beach at Somoa); Samoa, Ocean Beach Comment
  UC552775  Bromus carinatus var. carinatus Harold E. Parks and Joseph P. Tracy 1935-6-8 11268 Humboldt Trinidad 60 Comment
  UC53638  Bromus carinatus var. maritimus J. Burtt Davy 1899-7-30 6179 Humboldt opposite Eureka; North Coast Ranges Comment
  UCD60204  Bromus catharticus var. elatus A. H. Murphy 1947-8-19 s.n. Humboldt Fairground's exper. area. Fortuna. Comment
  HSC32480  Bromus commutatus D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-17 5720 Humboldt McKeown Ranch, N of Dinsmore Comment
  UC1145144  Bromus commutatus Joseph P. Tracy 1942-6-15 17130 Humboldt near Redcrest Resort (Englewood); Englewood 91 Comment
  UC188939  Bromus commutatus J. Burtt Davy 1899-6-16 5555 Humboldt North Coast Ranges, Scotia Scotia; North Coast Ranges, Scotia Comment
  HSC9269  Bromus diandrus J. W. Johnson 1962-4-8 1222 Humboldt Arcata, Mad River Co. Park Comment
  UC1103363  Bromus hordeaceus Joseph P. Tracy 1933-6-11 12556 Humboldt 4 mi s of Dyerville (South Fork Eel River); North Coast Ranges, South Fork Eel River 60 Comment
  UC176584  Bromus hordeaceus Joseph P. Tracy 1911-7-5 3310 Humboldt near mouth of Willow Creek (Valley of Trinity River); Northern Coast Ranges 152 Comment
  UC187101 Image available Bromus inermis subsp. inermis J. P. Tracy 1901-8-2 1244 Humboldt in field at Hydesville 60 Comment
  UC37638  Bromus laevipes Joseph Burtt Davy 1899-6-21 5724 Humboldt Hupa Valley, Supply Creek Supply Creek; Hupa Valley, Supply Creek Comment
  HSC74126  Bromus madritensis subsp. madritensis R. York 1980-5-23 628 Humboldt Near Buck Mtn. 1524 Comment
  SBBG30039  Bromus rubens L. Larsen 1935-5-28 Humboldt Redway Comment
  HSC73210  Bromus tectorum M. A. Baker 1980-5-18 1281 Humboldt Near Black Mtn. 1006 Comment
  HSC97182  Bromus tectorum Benjamin Hart, Erin Lonergan 2007-6-11 5 Humboldt 14.1 mi. S of Hwy. 299 on FS Rd. NF1 1524 Comment
  UC1145178  Bromus tectorum Joseph P. Tracy 1942-5-16 17330 Humboldt between Miranda and Garberville 152 Comment
  UC1103266  Bromus vulgaris Joseph P. Tracy 1926-6-13 7600 Humboldt near Blue Lake (on Liscom Hill Road); North Coast Ranges, Liscom Hill Road 152 Comment
  UC725498  Bromus vulgaris A. A. Heller 1923-7-10 13789 Humboldt Humboldt Camp between Scotia and Pepperwood; Humboldt Camp Comment
  UC1198280  Cakile edentula Joseph P. Tracy 1946-1-13 17518 Humboldt Centerville Beach 3 Comment
  UCD114856  Cakile edentula M. Barbour 1969-9-4 s.n. Humboldt West of Trinidad and north, across isthmus, from Trinidad Bay. Comment
  CAS-BOT-BC36863  Cakile edentula var. edentula Carl B. Wolf 1927-8-29 1217 Humboldt Seacoast, Devil's Gate, south of Cape Mendocino. Comment
  CHSC32805  Cakile maritima Lora L. Anderson 1981-4-25 2 Humboldt Ca. 500 yds e of ocean, 0.5 mi w of hwy 101, 11.5 mi nw of Arcata, beach. 0 Comment
  UC673072  Cakile maritima Joseph P. Tracy 1940-9-21 16724 A Humboldt near Samoa (on Humboldt Bay); Humboldt Bay 3 Comment
  UCD114941  Cakile maritima Linda M. Barker 1976-6-22 1628 Humboldt 3 miles west of Arcata. Comment
  UC1714424  Callitriche heterophylla var. bolanderi J. P. Tracy 1900-5-28 824 Humboldt immediate vicinity Eureka 0 Comment
  SDSU1330  Callitriche palustris D. F. Howe 1972-6-30 4847 Humboldt Trinidad. Comment
  CAS-BOT-BC80382  Calocedrus decurrens Doris K. Kildale 1928-7-1 5313 Humboldt Klamath River at mouth of Bluff Creek Comment
  UCR84791  Calochortus amabilis Kathy Harper 1992-5-14 s.n. Humboldt S-facing road embankment on Hwy 254 (parallel to Hwy 101), where road follows S fork of Eel River, c. 1 mi north of Phillipsville 91 Comment
  CAS-BOT-BC488458  Calochortus amabilis V. Rattan 1882-6-1 s.n. Humboldt Humboldt County Comment
  OBI36660  Calochortus coeruleus David J. Keil 1983-7-2 17309 Humboldt Ca. 4 mi SE of SR 299 along Titlow Hill Rd below Horse Mtn Summit Rd Comment
  UCD139501  Calochortus coeruleus K. Esau 1934-5-8 s.n. Humboldt above Blocksburg. 609 Comment
  HSC99312  Calochortus tolmiei M. A. Baker 1980-6-7 1813 Humboldt Near Brush Mtn. 1128 Comment
  JEPS17823  Calochortus tolmiei Joseph P. Tracy 1927-5-8 7960 Humboldt Philipsville Phillipsville 121 Comment
  UCD139588  Calochortus tolmiei Collector Unknown 1935-4-8 s.n. Humboldt Fort Seward. Comment
  HSC74422  Caltha leptosepala Gail Newton 1980-8-10 2045 Humboldt Near Blake Mtn. 1707 Comment
  CAS-BOT-BC273317  Calycadenia fremontii Henry M. Pollard 1945-8-21 s.n. Humboldt Orleans to Somes Bar Comment
  UC1199383  Calycadenia fremontii Joseph P. Tracy 1925-7-12 7204 Humboldt near South Fork of Trinity River; Trinity River Valley 304 Comment
  RSA256574  Calypso bulbosa J. D. Ackerman 1975-5-3 436 Humboldt 1 mile east of Blue Lake, along hwy. 299 T6N R2E S29 Comment
  HSC48948  Calypso bulbosa M. A. Baker 1979-5-17 732 Humboldt On FS 1 along Wilson Creek, just E of FS 15N01 Comment
  SEINET12074106  Calypso bulbosa J. P. Tracy 1950-1 Humboldt Comment
  HSC44594  Calyptridium monospermum Brad Klipfel 1973-7-15 190 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC55082  Calyptridium monospermum G. L. Clifton, Griswold 1979-7-31 11746 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa. 1845 Comment
  UC198589  Calyptridium monospermum Joseph P. Tracy 1917-9-2 4848 Humboldt Grouse Mountain at the summit Grouse Mountain; Northern Coast Ranges, Grouse Mountain 1524 Comment
  UC1197874  Calystegia occidentalis subsp. occidentalis Joseph P. Tracy 1898-7-15 257 Humboldt near Hydesville (Yager Creek); , near Hydesville 60 Comment
  HSC46384  Calystegia silvatica subsp. disjuncta Catherine Chin 1978-8-19 107 Humboldt 11th and B St., Arcata Comment
  UC1197877  Calystegia soldanella Joseph P. Tracy 1915-6-6 4650 Humboldt sandy beach near mouth Elk River (Eureka); Northern Coast Region, nr mouth Elk River, at Eureka 0 Comment
  UCD170801  Calystegia soldanella Gordon Leppig; Sylvia Leppig and Kai Neander 1998-5-6 747 Humboldt Dry Lagoon State Park, between ocean and Dry Lagoon. 2 Comment
  HSC45467  Camissonia cheiranthifolia subsp. cheiranthifolia Thomas W. Nelson, James Nelson 1978-9-28 4554 Humboldt NW of Samoa Comment
  UC1196941  Camissonia contorta Joseph P. Tracy 1901-4-14 1028 Humboldt Samoa Northern Coast Region, Humboldt Bay Comment
  CAS-BOT-BC160243  Camissoniopsis cheiranthifolia subsp. cheiranthifolia Ira L. Wiggins 1930-7-7 4670 Humboldt Near Samoa Comment
  SEINET10462967  Campanula prenanthoides Stephen S. Tillett 1956-7-6 Tillett 612 Humboldt Area cleared by logging and fire, south slope along Bar Shanty Road, 5 miles from Orleans 488 Comment
  SEINET10462986  Campanula prenanthoides Ira L. Wiggins 1930-7-22 Wiggins 4690 Humboldt Along bank of Redwood Creek between Blue Lake and Willow Creek Comment
  SEINET10463063  Campanula prenanthoides Van Dke 1931-6-30 VAN DYKE s.n. Humboldt WILLOW CREEK Comment
  SEINET10905896  Campanula prenanthoides Nelson 1974-7-19 NELSON 1671 Humboldt McKeown Ranch north of Dinsmore. Oak-Douglas Fir woodlands, dry NE slope. T2N R5E SECS.28,29,33,34 Comment
  UC1326258  Campanula prenanthoides Milo S. Baker 1947-8-8 11925 Humboldt just n Orick (about 10 mi along Rd from Hwy 101 towards Hoopa) 609 Comment
  UC602559  Campanula scouleri Joseph P. Tracy 1926-6-27 7691 Humboldt Horse Mountain 1219 Comment
  HSC6629  Capsella bursa-pastoris S. J. Roberts 1965-4-8 11 Humboldt 0.5 mi. S of junction of Alliance Rd. and Hwy. 101 Comment
  UC302120  Cardamine angulata Joseph P. Tracy 1926-6-12 7588 Humboldt Prairie Creek Northern Coast Ranges, Prairie Creek 152 Comment
  CAS-BOT-BC37424  Cardamine californica Doris K. Kildale 1927-1-23 2974 Humboldt Van Duzen River at the Blue Shale. Comment
  HSC79520  Cardamine californica Kenneth Clark 1980-3-1 518 Humboldt Middle and upper terraces of Dead Man's Gulch 61 Comment
  SDSU2481  Cardamine californica var. californica R. M. Beauchamp 1967-2-22 194 Humboldt 122 Comment
  HSC6642  Cardamine oligosperma D. B. Bader 1963-3-29 29 Humboldt Second of Clam Beach Lagoons, W of Hwy. 101 Comment
  HSC90418  Cardamine oligosperma Jean Hanson 1980-3-8 27 Humboldt Indian (Gunther) Island, Humboldt Bay, Eureka, W end of island Comment
  UC201615  Cardamine oligosperma Joseph P. Tracy 1918-5-5 4923 Humboldt sand dunes Ocean Beach (Humboldt Bay); Northern Coast Region, , Ocean Beach Comment
  UC161490  Cardamine pensylvanica Joseph P. Tracy 1905-4-16 2164 Humboldt region about Humboldt Bay (near Bucksport); Northern Coast Region, Humboldt Bay region, nr Bucksport 0 Comment
  UC668057  Cardamine pensylvanica Joseph P. Tracy 1937-7-2 15401 Humboldt head Little Hors-Linto Creek , head Little Hors-Linto Creek (Trinity Summit) 1371 Comment
  CHSC68780  Cardionema ramosissimum Vernon Oswald 1997-6-5 8537 Humboldt Somoa Dunes Recreation Area at the south tip of the North Spit of Humboldt Bay. Along the road to the jetty. 6 Comment
  UCD150616  Cardionema ramosissimum Joseph P. Tracy 1947-7-3 17765 Humboldt at mouth of Little River. 6 Comment
  CDA18246  Carduus tenuiflorus G. D. Barbe, T. C. Fuller 1974-6-18 1884 Humboldt North Coast Ranges; Fortuna bottoms, Grizzly Bluff; Waddington Rd. 1/4 mi N of Pleasant Point Rd. (Ferndale Bottoms) 2 mi N of Grizzly Bluff Rd. 0 Comment
  CAS-BOT-BC18268  Carex David D. Keck 1946-7-4 5604 Humboldt South Fork of Eel River, 8 miles north of Garberville. Comment
  UC1152063  Carex angustata Joseph P. Tracy 1950-7-6 18988 Humboldt lower end of Burr Valley on nw slope of Buck Mountain Burr Valley, Buck Mountain 1066 Comment
  CAS-BOT-BC18001  Carex aquatilis var. dives Joseph Prince Tracy 1934-7-30 13504 Humboldt Dry Lagoon (along coast in front of South End of Stone Lagoon). 3 Comment
  HSC44018  Carex athrostachya Thomas W. Nelson, Jane P. Nelson 1977-6-19 3504 Humboldt Above Alder Springs 1585 Comment
  UCD23239  Carex athrostachya Collector Unknown 1971-8-13 s.n. Humboldt Bear River Res. Comment
  CAS-BOT-BC19215  Carex barbarae Joseph Prince Tracy 1929-6-23 8606 Humboldt Trinity River Valley, at Willow Creek. 152 Comment
  HSC75485  Carex bolanderi J. O. Sawyer 1980-7-18 3604 Humboldt North Trinity Mountain Research Natural Area, north of Mill Creek Lake to Red Cap Hole. Comment
  CAS-BOT-BC19438  Carex bolanderi Doris K. Kildale 1927-7-23 3800 Humboldt Hoaglin Lake near Lassicks Peak [Lassics Lookout?]. Comment
  HSC63135  Carex bolanderi M. A. Baker 1979-6-29 967 Humboldt Comment
  RSA126089  Carex buxbaumii Joseph P. Tracy 1924-7-13 6724 Humboldt Big Lagoon 6 Comment
  HSC95814  Carex canescens Juha Pykala, D. H. Norris 1987-6-10 1473 Humboldt 4.5 mi. N of Weitchpec, Blue Lake 838 Comment
  CAS-BOT-BC34379  Carex cusickii Joseph Prince Tracy 1938-7-6 16023 Humboldt Big Lagoon. 6 Comment
  CAS-BOT-BC34984  Carex densa Alice Eastwood; John Thomas Howell 1937-6-22 4735 Humboldt Near Alder Point. Comment
  HSC103366  Carex densa Thomas W. Nelson, Jane Nelson 1982-7-11 7114 Humboldt Along road from Hindley's cabin on McKeown Ranch to Anderson's Ford at Mad River Comment
  UC197209  Carex echinata subsp. phyllomanica Joseph P. Tracy 1913-7-13 4364 Humboldt Patrick's Point Northern Coast Ranges 30 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
  JEPS79841  Carex fracta Joseph P. Tracy 1937-7-25 15542 Humboldt Trinity Summit, head of Little Hors-Linto Creek Little Hors-Linto Creek; Trinity Summit, Little Hors-Linto Creek 1371 Comment
  CHSC109942  Carex geyeri Peter F. Zika 2011-7-3 25498 Humboldt Titlow Hill Road, 4.2 road miles SE of Route 299 at Berry Summit, 0.8 air km SSW of Horse Mountain, Outer North Coast Ranges. 1390 Comment
  UC1103070  Carex globosa Joseph P. Tracy 1942-6-15 17164 Humboldt Garberville 152 Comment
  UC1103075  Carex globosa Joseph P. Tracy 1933-6-7 12521 Humboldt Blue Slide Northern Coast Ranges, Van Duzen River 91 Comment
  UCSC000105  Carex globosa H. L. Person 1932-5-11 s.n. Humboldt Near Arcata Arcata - Eureka Comment
  UC562729  Carex gynodynama Joseph P. Tracy 1927-5-8 7969 Humboldt Northern Costa Ranges. Phillipsivelle, facing south Fork of Eel River. Comment
  CAS-BOT-BC22318  Carex harfordii Joseph Prince Tracy 1938-6-15 15934 Humboldt Vicinity of Carlotta. 30 Comment
  JEPS25966  Carex harfordii Joseph P. Tracy 1927-7-17 8279 Humboldt Three Cabins: grassy slopes on lower western foothills of Chaparral Mountain 457 Comment
  SEINET7561247 Image available Carex harfordii David Castaner 1989-6-19 10253 Humboldt Gold Bluff Beach at entrance. Comment
  UC1103593  Carex hendersonii Joseph P. Tracy 1937-6-20 15348 Humboldt 10 mi upstream mouth of Bear River; Bear River 152 Comment
  SEINET10650830  Carex hendersonii Victor Duran 1933-5-12 Duran 3412 Humboldt Bull Creek, at S Fork of the Eel River. Redwood forest floor. Comment
  SEINET3901638  Carex hendersonii Thomas Nelson 1978-6-10 4416 Humboldt Eureka Quad. Behind Eureka Seventh Day Advent Church on F St.; 0 61 Comment
  SEINET7854031 Image available Carex hendersonii V. Duran 1933-5-12 3412 Humboldt Bull Creek, at South Fork of Eel River Comment
  HSC102203  Carex integra M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-4 1118 Humboldt Along trail (abandoned Road 6E74) from Andy's Camp to Patterson Meadows 1563 Comment
  UC562556  Carex integra Joseph P. Tracy 1935-7-23 14139 Humboldt Corral Prairie Trinity Summit 1584 Comment
  UC562263  Carex jonesii Joseph P. Tracy 1935-7-26 14257 Humboldt Water Dog Lakes Trinity Summit 1828 Comment
  JEPS63584  Carex lenticularis var. limnophila W. L. Jepson 1921-8-7 9332 Humboldt Stone Lagoon Comment
  UC562320  Carex lyngbyei Joseph P. Tracy 1927-7-16 8262 Humboldt Eureka Northern Coast Ranges 3 Comment
  UC562657  Carex mariposana Joseph P. Tracy 1935-7-23 14141 Humboldt Corral Prairie Trinity Summit 1584 Comment
  UC303015  Carex mendocinensis Joseph P. Tracy 1926-6-20 7632 Humboldt Northern Coast Ranges. Horse Mountain. Comment
  HSC98955  Carex multicaulis Cara Witte 2008-7-3 826 Humboldt Friday Ridge Road/ 6N08. Approximately 1 mile north of intersection with National Forest 1. 1567 Comment
  UC1152054  Carex multicaulis Joseph P. Tracy 1949-8-11 18465 Humboldt e of headwaters Redwood Creek (beginning where the electric power line crosses, going southward); Kinsey Ridge 1280 Comment
  UC709391  Carex multicaulis Joseph P. Tracy 1941-4-11 16857 Humboldt Willow Creek Trinity River Valley 152 Comment
  UC562669  Carex multicostata Joseph P. Tracy 1927-7-4 8233 Humboldt Iaqua North Coast Ranges 609 Comment
  UCD140669  Carex multicostata Don Hagar 1957-8-27 s.n. Humboldt Red Cap Prairie, Trinity Summit area, around 15 miles east of Hoopa. Comment
  CAS-BOT-BC119538  Carex nudata Harley Pierce Chandler 1901-5-1 1235 Humboldt Unspecified. 91 Comment
  HSC45021  Carex nudata R. Sutherland 1978-5-16 116578 Humboldt Redwood Creek 143 Comment
  SEINET3905221  Carex nudata L. P. Janeway 1983-7-23 434 Humboldt Arcata North quad, along north edge of Mad River, near junction of North Bank Road and Hunts Drive.; 0 Comment
  UC1103621  Carex nudata Joseph P. Tracy 1933-5-18 12194 Humboldt 6 mi W of Blue Lake (Mad River) 15 Comment
  CAS-BOT-BC119308  Carex obnupta Robert F. Thorne; P. Everett 1965-8-7 35199 Humboldt Big Lagoon, at edge of bog at S end of lagoon. Comment
  CAS-BOT-BC119389  Carex obnupta T. G. W. s.n. Humboldt Arcata Comment
  CAS-BOT-BC119385  Carex obnupta W. R. Dudley 1899-6-1 s.n. Humboldt Peninsula opposite Eureka. Comment
  HSC76819  Carex obnupta L. P. Janeway 1982-8-7 112 Humboldt Along Prairie Creek, ~5 mi. N of Prairie Creek Campground along Hwy. 101 183 Comment
  HSC65948  Carex ovalis M. A. Baker 1980-7-19 2991 Humboldt Near Bret Hole. 1814 Comment
  CAS-BOT-BC119242  Carex pachystachya Joseph Prince Tracy 1939-7-9 16340 Humboldt Snow Camp 1402 Comment
  CAS-BOT-BC118822  Carex preslii R. Tallent 1987-8-11 895 Humboldt Six Rivers National Forest. Roadside S of Horse Mtn. 1389 Comment
  HSC82401  Carex scopulorum var. bracteosa Thomas W. Nelson 1979-7-11 5013 Humboldt N Trinity Mtn. and ridge to E. 1829 Comment
  CHSC115860  Carex subbracteata Peter F. Zika 2011-7-3 25493 Humboldt Titlow Hill Road, 3 road miles SE of Route 299 at Berry Summit, 1 air km SW of Horse Mountain, Outer North Coast Ranges. 1190 Comment
  CAS-BOT-BC115567  Carex tumulicola Alice Eastwood; John Thomas Howell 1937-6-23 4758 Humboldt Dinsmore's Comment
  CAS-BOT-BC115577  Carex tumulicola Joseph Prince Tracy 1915-6-6 4642 Humboldt At Eureka 60 Comment
  UC585640  Carex tumulicola Joseph P. Tracy 1937-6-20 15338 Humboldt 10 mi up stream from mouth Bear River 152 Comment
  CAS-BOT-BC115572  Carex tumulicola Joseph Prince Tracy 1930-7-10 8859 Humboldt In grassy opening, Brannan Mountain. 1219 Comment
  UC1103116  Carex tumulicola Joseph P. Tracy 1924-9-14 6876 1/2 Humboldt Butter Valley Northern Caost Ranges 152 Comment
  HSC7088  Carex viridula H. E. Parks Sep 1934 5157 Humboldt Dry Lagoon Comment
  SEINET201052  Carex viridula Joseph P. Tracy 1934-7-30 13505 Humboldt Along coast in front of South End of Stone Lagoon. Dry Lagoon. 3 Comment
  CAS-BOT-BC249132  Castilleja affinis Alice Eastwood; John Thomas Howell 1937-6-23 4837 Humboldt 11 miles from Kneeland on road to Yager 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
  UC1196856  Castilleja affinis subsp. litoralis Joseph P. Tracy 1927-8-14 8332 Humboldt n end Big Lagoon (hills) 152 Comment
  HSC90966  Castilleja ambigua subsp. humboldtiensis Gail Newton 1982-6-5 3575 Humboldt Elk River Wildlife Area, Eureka. Comment
  JEPS3825  Castilleja applegatei subsp. martinii Joseph P. Tracy 1938-5-1 15732 Humboldt Willow Creek Trinity River Valley 152 Comment
  HSC63879  Castilleja arachnoidea M. A. Baker 1979-6-27 928 Humboldt E of Oregon Creek Comment
  HSC20838  Castilleja attenuata R. T. Forester 1963-5-6 43 Humboldt 1 mi. S of Fairhaven on Samoa Rd. Comment
  HSC48386  Castilleja hispida subsp. brevilobata Brad Klipfel 1973-6-10 110 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  JEPS10639  Castilleja lacera Lincoln Constance 1934-6-25 929 Humboldt Englewood, on e side of road, across road from Collins' Englewood Campground South Fork Eel River, Bull Creek Region, Englewood Comment
  HSC101997  Castilleja miniata M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-12 896 Humboldt Patterson Meadows 1555 Comment
  HSC55994  Castilleja miniata Overton, Butler 1979-7-31 11425 Humboldt Near Water Dog Lakes, close to the town of Hoopa 1830 Comment
  HSC56134  Castilleja miniata G. L. Clifton, Griswold 1979-8-1 11952 Humboldt Near Mill Creek Lakes, close to the town of Hoopa 1707 Comment
  HSC38886  Castilleja miniata J. O. Sawyer 1970-6-25 2300 Humboldt 1646 Comment
  HSC44346  Castilleja pruinosa Brad Klipfel 1975-6-17 689 Humboldt Horse Mtn. Comment
  UC1196742  Castilleja pruinosa Joseph P. Tracy 1939-4-29 16230 Humboldt opposite mouth of Hors Linto Creek; Trinity River 152 Comment
  HSC39058  Castilleja rubicundula subsp. lithospermoides Thomas W. Nelson, Jane P. Nelson 1976-5-31 2644 Humboldt N of junction of FS Rds. 1S07 and 5E27 along 5E27 1524 Comment
  HSC100905  Ceanothus Carl C. Marshall Jun 1887 462 Humboldt East branch. Comment
  HSC67191  Ceanothus arcuatus Thomas W. Nelson, James Nelson 1980-6-10 5416 Humboldt Along Swayback Ridge Rd. 2.5 mi. N of junction of Rd. 1S07 1463 Comment
  HSC55616  Ceanothus cordulatus Overton, Butler 1979-7-23 9511 Humboldt Near Titlow Hill, close to the town of Willow Creek. 1280 Comment
  SDSU19193  Ceanothus cordulatus Michael G. Simpson, Michael Mesler and Michael Mayer 2008-5-27 3012 Humboldt Six Rivers National Forest. From Hwy 299, take Titlow Hill Road (at Berry Summit) ca. 7.5 miles south, west 0.2 miles to Cold Spring. Ca. 0.3 mile south-southeast of Cold Spring. Ca. 3.3 aerial miles south-southeast of Horse Mtn. Radio Tower. 1426 Comment
  UC1198032  Ceanothus cordulatus Joseph P. Tracy 1935-7-14 14092 Humboldt near Clear Lake (ridge); Northern Coast Ranges 1524 Comment
  POM126157  Ceanothus cuneatus Joseph P. Tracy 1922-4-30 5998 Humboldt Trinity River Valley, near Willow Creek. 152 Comment
  UC668169  Ceanothus cuneatus var. cuneatus Joseph P. Tracy 1938-6-13 15905 Humboldt Horse Mt. 1432 Comment
  HSC101664  Ceanothus foliosus var. foliosus J. P. Smith, J. O. Sawyer 2011-4-23 13125 Humboldt Kings Peak Road, 2.4 miles from its junction with Shelter Cove Rd 552 Comment
  HSC101667  Ceanothus gloriosus var. exaltatus J. P. Smith, J. O. Sawyer 2011-4-23 13128 Humboldt Kings Peak Road, 3.2 miles from its junction with Shelter Cove Rd Comment
  UC198614  Ceanothus incanus Joseph P. Tracy 1916-6-21 4706 Humboldt Burr Creek Northern Coast Ranges 914 Comment
  CAS-BOT-BC63678  Ceanothus integerrimus L. B. Kildale 1928-6-24 5279 Humboldt Entrance to Hoopa Mt. Comment
  UC98876  Ceanothus integerrimus Chesnut and Drew 1888-7-9 Humboldt Campbell's Comment
  HSC18380  Ceanothus oliganthus var. sorediatus P. J. Zinke 1950-10-4 166 Humboldt 2 mi E of Honeydew 1829 Comment
  HSC18310  Ceanothus parryi P. J. Zinke 1950-8-25 158 Humboldt Salmon Creek 3 mi W of Miranda 91 Comment
  SBBG4535  Ceanothus parryi H. and M. Dearing 1933-5-15 979 Humboldt near Garberville Comment
  CAS-BOT-BC52042  Ceanothus prostratus Doris K. Kildale 1926-4-25 1810 Humboldt Hoopa Mountain 792 Comment
  CAS-BOT-BC52222  Ceanothus thyrsiflorus Milo S. Baker 1924-4-17 79 -ton.Req Humboldt Ft Bragg Highway near Albion Comment
  HSC37609  Ceanothus thyrsiflorus R. Sutherland 1975-5-8 11 .8575 Humboldt Along county rd. near Mattole River, 6 mi W of Honeydew Comment
  UC594242  Ceanothus thyrsiflorus S. K. Harris 1936-6-8 3233 Humboldt roadside on bluff above ocean at Centerville; on bluff above ocean at Centerville Comment
  UCD112719  Ceanothus thyrsiflorus H. P. Olmo 1934-6-8 s.n. Humboldt 5 mi. north of Trinidad. Comment
  CAS-BOT-BC52862  Ceanothus velutinus Doris K. Kildale 1925-8-18 1226 Humboldt Trinity Summit 1828 Comment
  HSC102038  Ceanothus velutinus M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-13 941 Humboldt Rustic Camp, northwest of Patterson Meadows Comment
  JEPS42318  Ceanothus velutinus W. L. Jepson 1902-6-28 1949 Humboldt near Redwood Creek (High ridge, Acorn P.O. to Green Point Ranch) 1066 Comment
  UC668158  Ceanothus velutinus Joseph P. Tracy 1935-5-12 13798 Humboldt Trinity River Valley at Willow Creek; Trinity River Valley, Willow Creek 152 Comment
  CDA7084  Centaurea calcitrapa J. F. Hart 1963-9-17 Humboldt Whitlow, Eel River, 2 miles east of McCann. 0 Comment
  JEPS44148  Centaurea cyanus Lincoln Constance 1934-6-25 928 Humboldt on e side of road at Englewood (across the road from Collins' Englewood Campground); Bull Creek Region, South Fork Eel River Comment
  UC1222950  Centaurea melitensis Joseph P. Tracy 1943-11-28 17455 Humboldt bar at mouth of Van Duzen Eel River; , Van Duzen Comment
  UC1198631  Centaurium muehlenbergii Joseph P. Tracy 1918-7-1 4965 Humboldt from South Fork to Scotia (Holmes Flat, along Eel River); Northern Coast Ranges, Eel River, Holmes Flat 60 Comment
  UC562309  Centaurium muehlenbergii Joseph P. Tracy 1931-8-9 9610 Humboldt Blue Slide, on Van Duzen River Northern Coast Ranges, Van Duzen River 91 Comment
  UC1198613  Centunculus minimus J. P. Tracy 1905-5-21 2182 Humboldt immediate vicinity of Eureka 0 Comment
  HSC56996  Chaenactis douglasii var. douglasii Overton, Butler 1979-7-24 9571 Humboldt Near Titlow Hill, close to the town of Willow Creek 1097 Comment
  UC164837  Chamaesyce serpyllifolia Joseph P. Tracy 1911-7-9 3470 Humboldt near mouth Willow Creek; Valley of Trinity River 152 Comment
  HSC55194  Chamerion angustifolium subsp. circumvagum G. L. Clifton, Griswold 1979-8-2 12274 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  JEPS39308  Chamerion angustifolium subsp. circumvagum W. L. Jepson 1927-7-3 12360 Humboldt Weott South Fork Eel River Comment
  CAS-BOT-BC68264  Cheilanthes gracillima Henry M. Pollard 1943-8-1 s.n. Humboldt Orleans Mt. 1828 Comment
  HSC55159  Cheilanthes gracillima Gilbert Muth 1979-8-1 12120 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1677 Comment
  HSC97579  Cheilanthes gracillima Cara Witte 2007-5-23 97 Humboldt Near Grouse Mountain. Along Forest Service Road 4N32. Approximately 0.5 mi. south of intersection with 5N04 and 4N32E. 1402 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
  HSC91610  Chenopodium album E. Mackey 1987-8-10 Humboldt Patrick's Point State Park, by trail down to Agate Beach Comment
  HSC55230  Chimaphila menziesii G. L. Clifton, Griswold 1979-8-2 12431 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  SEINET10539751  Chimaphila menziesii Botany 1985-5-10 BOTANY s.n. Humboldt T5n,r6e,sec.34, h.m.; Grays falls campground off hwy 299. Shaded understory, Douglas fir, madrone, canyon live oak 241 Comment
  HSC98053  Chlorogalum pomeridianum var. pomeridianum Cara Witte 2007-7-17 541 Humboldt Along National Forest 1. Approximately 1/2 mile south of White Oak Opening. 1302 Comment
  CAS-BOT-BC30123  Chrysolepis chrysophylla Joseph P. Tracy 1933-8-6 12933 Humboldt Northern Coast Ranges. French Camp Ridge. 1066 Comment
  CAS-BOT-BC36484  Chrysolepis chrysophylla Doris K. Kildale 1927-2-22 2978 Humboldt Kneeland Prairie junction of old road Comment
  SEINET8946802  Chrysolepis chrysophylla W. D. Billings 1940-6-25 1352 Humboldt Cedar Creek, 35 miles east of Arcata Comment
  UC519307  Chrysolepis chrysophylla var. chrysophylla Joseph P. Tracy 1933-8-6 12933 Humboldt French Camp Ridge; Northern Coast Ranges 1066 Comment
  UC1193060  Chrysolepis chrysophylla var. minor G. W. Tourtillott 1950-10-11 34 Humboldt 1 mi w Queens Peak 609 Comment
  UC665684  Chrysolepis chrysophylla var. minor J. P. Tracy and H. E. Parks 1941-8-28 11541 Humboldt Blake Lookout area; South Fork Mountain 1706 Comment
  HSC36884  Chrysosplenium glechomifolium J. P. Smith, Thomas W. Nelson 1976-4-27 8616 Humboldt Brazil Ranch E of Hwy. 101 near College of the Redwoods Comment
  UC164825  Cichorium intybus Joseph P. Tracy 1907-6-20 2572 Humboldt Northern Coast Region; vicinity of Eureka Comment
  UC154219  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
  RSA66880  Circaea alpina subsp. pacifica P. A. Munz 1951-7-15 16552 Humboldt 5 miles N of Willow Creek, on Raccoon Creek 305 Comment
  UC505099  Circaea alpina subsp. pacifica Joseph P. Tracy Jul 16 1930-Jul 19 1930 8927 Humboldt near McKay Camp (S. Fork Mt.); Northern Coast Ranges, S. Fork Mt. 1676 Comment
  HSC100427  Cirsium Carl C. Marshall Jun 1885 15 Humboldt Pilot Creek. Comment
  HSC101544  Cirsium arvense J. P. Smith, J. O. Sawyer 2009-8-3 12645 Humboldt Roadside 103 Comment
  JEPS59311  Cirsium arvense W. L. Jepson 1936-8-12 17891 Humboldt South Fork of Eel River, Philipsville Comment
  RSA424924  Cirsium arvense R. D. Goeden, D. W. Ricker 1987-9-2 15 Humboldt Loleta, at bay on Cannibal Road. 3 Comment
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Apr 8 2011
  UCD130619  Cirsium douglasii var. douglasii Collector Unknown Date Unknown s.n. Humboldt Horse Mt. Comment
  CDA1329  Cirsium occidentale var. candidissimum T. R. Haig 1960-6-21 s.n. Humboldt 7 mi. S of Garberville. Comment
  CHSC36389  Cirsium occidentale var. candidissimum Donald M. Burke 1981-8-1 67 Humboldt Along Friday Ridge Rd. 560 Comment
  HSC35706  Cirsium occidentale var. venustum Thomas W. Nelson, B. Reinhardt 1975-7-30 2122 Humboldt Beside private road to Pilot Rock Comment
  HSC74326  Cirsium remotifolium M. A. Baker 1980-6-26 2423 Humboldt Near Sims Creek 610 Comment
  UC129537  Cirsium remotifolium var. odontolepis J. Burtt Davy 1899-7-30 6190 Humboldt near Arcata (Wild-cat Road); North Coast Ranges Comment
  UC668205  Cirsium remotifolium var. rivulare Joseph P. Tracy 1938-7-4 15997 Humboldt Iaqua 762 Comment
  HSC23714  Clarkia amoena Tim Baroni 1971-7-25 50 Humboldt About 8 mi. E of Petrolia Comment
  CAS-BOT-BC160917  Clarkia amoena subsp. amoena C. Hart Merriam 1922-7-13 s.n. Humboldt Fortuna Comment
  CAS-BOT-BC160970  Clarkia amoena subsp. amoena L. R. Abrams 1916-7-11 6020 Humboldt Mouth of Grizzly Creek on Van [Duzon] Duzen River - Redwood forest Comment
  CAS-BOT-BC160960  Clarkia amoena subsp. amoena P. A. Munz 1936-8-10 14339 Humboldt Little Van Duzen River, 15 mi. east of Bridgeville Comment
  RSA226613  Clarkia amoena subsp. amoena Norman Dennis 1965-6-19 133 Humboldt 1/4 mile S and 1 mile E of the jct of Barry Ridge Road and the Eureka-Bridgeville country road, along Ashfield Ridge Road, 5 miles SE of Kneeland. 793 Comment
  HSC48148  Clarkia amoena subsp. huntiana Thomas W. Nelson, Jane P. Nelson 1978-7-3 4410 Humboldt Along Hwy. 36, 100 m E of Dinsmore 610 Comment
  HSC35011  Clarkia davyi Thomas W. Nelson 1974-9-15 1715 Humboldt W of Fairhaven, Samoa Peninsula Comment
  UC58846  Clarkia gracilis subsp. gracilis Harley P. Chandler June, 1901 1327 Humboldt Hupa Indian Reservation North Coast Ranges 152 Comment
  HSC43846  Clarkia purpurea subsp. quadrivulnera Maralyn O'Meara 1974-7-17 555 Humboldt Comment
  UC35399  Clarkia purpurea subsp. quadrivulnera Chesnut and Drew 1888-7-9 Humboldt Kneeland Comment
  JEPS127652  Claytonia Jurriaan M. de Vos 2014-7-1 300 Humboldt Along Bald Hills Road, near Dolason trail head parking. Comment
  JEPS17215  Claytonia cordifolia Joseph P. Tracy 1932-6-15 10583 Humboldt ridges e Corral Prairie; Trinity Summit 1828 Comment
  HSC41230  Claytonia lanceolata Brad Klipfel 1974-5-8 318 Humboldt Horse Mtn. Comment
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Sep 23 2019
  HSC44425  Claytonia lanceolata Brad Klipfel 1975-5-30 648 Humboldt Horse Mtn. Comment
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Sep 23 2019
  HSC96292  Claytonia parviflora subsp. parviflora J. Breton, A. Livingston 2005-6-3 3 Humboldt 19.3 mi. S of Hwy. 299 on NF1 1240 Comment
  HSC17686  Claytonia perfoliata Francis Winter 1960-4-24 Humboldt 2 mi. N of Hwy. 299, on Redwood Creek Rd. 396 Comment
  CAS-BOT-BC439932  Claytonia perfoliata subsp. mexicana C. E. Fellows 1972-4-29 480 C Humboldt Ca. 8 miles ESE of Eureka. 3.1 miles above the town of Freshwater on the W side of the road to Kneeland. Ca. 20 m below the road (and the dump) 609 Comment
  UC161026  Claytonia perfoliata subsp. perfoliata Joseph P. Tracy 1906-4-29 2429 Humboldt near Field's Landing (Humboldt Bay Region); Northern Coast Region, Humboldt Bay Region 0 Comment
  HSC39958  Claytonia rubra subsp. depressa Linda M. Barker 1976-4-13 1378 Humboldt 3 mi. W of Arcata Comment
  UCD100846  Claytonia rubra subsp. depressa Linda M. Barker 1976-2-22 1318 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  HSC39620  Claytonia rubra subsp. rubra Thomas W. Nelson 1976-6-15 2723 Humboldt Along old trail from lookout to Blocksburg 1585 Comment
  UC183595  Claytonia rubra subsp. rubra Joseph P. Tracy 1913-6-16 4141 Humboldt opposite Buck Mountain (Dinsmore's Ranch); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  HSC82185  Claytonia saxosa Thomas W. Nelson 1977-6-15 3442 Humboldt Along old road to ski area 1372 Comment
  JEPS25688  Claytonia saxosa P. C. Hutchison 1961-5-22 2016 Humboldt 4.3 mi s (on U.S. Hwy 299) Berry Summit (Monster Point parking area, Horse Mountain); Horse Mountain, Monster Point Comment
  UCD100550  Claytonia saxosa Thomas W. Nelson; Jane P. Nelson 1980-6-27 5952 Humboldt Six Rivers National Forest. Saddle between two peaks east of Mount Lassic. 1767 Comment
  HSC101994  Claytonia sibirica M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-12 893 Humboldt Patterson Meadows 1566 Comment
  HSC48826  Claytonia sibirica Brad Klipfel, J. O. Sawyer, J. P. Smith 1973-5-27 39 Humboldt Grogan's Hole near N Trinity Mtn. 1829 Comment
  HSC55112  Claytonia sibirica G. L. Clifton 1979-7-31 11861 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  UC1223253  Claytonia sibirica Joseph P. Tracy 1951-6-14 19414 Humboldt Snow Camp Comment
  JEPS43310  Claytonia sibirica W. L. Jepson 1902-6-29 1951 Humboldt Redwood Creek; Hupa Road Comment
  RSA117678  Claytonia sibirica S. S. Tillett 1956-7-7 628 Humboldt Upper end of Pearch Creek Campground, Six Rivers National Forest Orelans. Comment
  SEINET11942404  Claytonia sibirica J. P. Tracy 1950-1 18960 Humboldt Fern Spring, Happy Camp Mountain (in Trinity Summit Range, 6 mi NE of Hawkins Bar) 1280 Comment
  UCD100897  Claytonia sibirica James P. Smith 1973-5-26 6850 Humboldt Scotia Bluffs along the Eel River near Rio Dell. Railroad right-of-way. Comment
  CAS-BOT-BC92593  Clematis ligusticifolia J. Clausen 1932-9-19 697 Humboldt Dyerville, Eel River. 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
  SEINET3885722  Clintonia andrewsiana D. W. McNeal 1977-6-6 2047 Humboldt On a Redwood House Rd., 2.6 mi. n.e. of Hwy. #36 between Bridgeville and Charlotta.; 0 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
  UC1103461  Clintonia uniflora E. Ethel Tracy 1919-8-1 Humboldt Trinity Summit; Northern Coast Ranges, Trinity Summit 1524 Comment
  CAS-BOT-BC499962  Clintonia uniflora Doris K. Kildale 1926-6-9 2135 Humboldt Horse Mountain 1219 Comment
  UC30060  Clintonia uniflora Mrs. M. H. Manning Humboldt near Hupa (Redwood Trail); Redwood Trail Comment
  HSC92754  Coincya monensis Jim Belsher 1997-2-13 1 Humboldt Lot ESE of the Manila Community Services District sewage pump station 6 Comment
  HSC97486  Collinsia grandiflora C. Witte 2007-5-8 10 Humboldt Cold Spring. 1/2 mile south of Titlow Hill. 1397 Comment
  UC169092  Collinsia grandiflora Joseph Burtt Davy and Walter C. Blasdale 1899-6-19 5673 Humboldt ridge w Hoopa Valley (Hoopa Mt summit); Hoopa Mtn, North Coast Ranges Comment
  UC582461  Collinsia grandiflora Joseph P. Tracy 1927-6-12 8159 Humboldt Horse Mtn; Northern Coast Ranges; Horse Mtn 1219 Comment
  HSC39196  Collinsia greenei D. E. Anderson, J. P. Smith 1971-7-6 - 1329 Humboldt 1.0 mi. W of Pine Ridge Summit, 6 mi. E of junction with Redwood Valley Rd. Comment
  UC177195  Collinsia greenei Joseph P. Tracy 1912-7-31 3937 Humboldt near Buck Mtn Summit; Northern Coast Ranges, Buck Mtn 1676 Comment
  HSC20635  Collinsia linearis D. E. Anderson 1965-6-1 3777 Humboldt Along Ridge Rd., about 7 mi. NE of its Jct. with Titlow Hill Rd. Comment
  UC54913  Collinsia linearis Joseph Burtt Davy and Walter C. Blasdale 1899-5 5682 Humboldt North Coast Ranges, Hupa Mountain Hupa Mountain; North Coast Ranges, Hupa Mountain Comment
  HSC48636  Collinsia parviflora Mark Flippo 1978-5-20 89 Humboldt USFS Rd. 8N10 Comment
  HSC70957  Collinsia parviflora Thomas W. Nelson 1977-6-15 3432 Humboldt Along FS Rd. 6N01 about 1 mi. S of junction with FS Rd. 5N10 1372 Comment
  HSC70372  Collinsia rattanii Gail Newton 1980-6-7 129 Humboldt Near Brush Mtn. 1128 Comment
  UC55956  Collinsia rattanii J. P. Tracy 1902-6-3 1665 Humboldt Ridge between Eel River and South Fork, near Hubbard's Station Eel River; Ridge between Eel River and South Fork 609 Comment
  POM193011  Collinsia sparsiflora H. E. Parks 1930-5-25 792 Humboldt Laribee Valley. 793 Comment
  HSC100664  Collinsia tinctoria Carl C. Marshall May 1887 418 Humboldt Spruce Grove region. Comment
  HSC81772  Collinsia torreyi var. torreyi Thomas W. Nelson, James Nelson 1980-6-10 5409 Humboldt Along Swayback Ridge 4-wheel drive road, 2.5 mi. N of junction with FS Rd. 1S07 1463 Comment
  JEPS7053  Collinsia torreyi var. wrightii Joseph P. Tracy 1932-7-12 10467 Humboldt head of Brett Hole Trinity Summit 1828 Comment
  HSC35779  Collomia grandiflora Thomas W. Nelson, B. Reinhardt 1975-7-30 2095 Humboldt Head of Pilot Creek, Last Chance Ridge Comment
  HSC63485  Collomia grandiflora M. A. Baker 1977-6-20 388 Humboldt Weitchpec Comment
  RSA411155  Collomia grandiflora Anstruther Davidson 1918-07 3352 Humboldt Eel River. Comment
  SBBG11070  Collomia grandiflora D. E. Breedlove 1961-7-4 653 Humboldt 10.9 mi W of Willow Crk on US Hwy 299 822 Comment
  HSC58012  Collomia heterophylla G. L. Clifton 1979-7-31 11810 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  UC1197848  Collomia heterophylla Joseph P. Tracy 1914-5-14 4461 Humboldt Fort Seward Northern Coast Region 121 Comment
  JEPS26238  Collomia tracyi Joseph P. Tracy 1930-7-16 9046 Humboldt along summit near Blake Lookout; Northern Coast Ranges, South Fork Mountain 1737 Comment
  JEPS26242  Collomia tracyi Joseph P. Tracy 1932-7-12 10468 Humboldt head Brett Hole (in areas of disintegrated rock); Trinity Summit 1828 Comment
  UC1197866  Collomia tracyi Joseph P. Tracy 1946-6-15 17566 Humboldt broken rock talus on lower slopes Horse Mountain 1066 Comment
  UC978537  Collomia tracyi Milo S. Baker July, 1923 102 Humboldt near Carlotta; Van Duzen River bed Comment
  UC179929  Conium maculatum Joseph P. Tracy 1914-6-7 4496 Humboldt Region about Humboldt Bay (South Fork Elk River, at Falk's Mill); Northern Coast Region 0 Comment
  HSC37972  Conyza canadensis Peter Sorensen 1976-7-15 Humboldt Woodley Island Comment
  HSC104326  Coptis laciniata James Regan, Humboldt Redwood Co., LLC 2009-4-1 31 Humboldt Snow Camp Rd., Bald Mtn. Creek Comment
  UC14983  Corallorhiza maculata J. Burtt Davy and W. C. Blasdale 1899-6-18 5622 Humboldt Bald Mt. Comment
  JEPS8448  Corallorhiza maculata Rimo Bacigalupi with J. P. Tracy, L. Constance, R. Moran, R. L. Rodriguez, and S. Carlquist 1951-6-14 3421 Humboldt Snow Camp Bald Mountain ridge (edge of meadow, ridge between Mad River and Redwood Creek) 1432 Comment
  HSC64188  Corallorhiza mertensiana J. O. Sawyer, M. A. Ericksen 1979-6-23 3380 Humboldt Slopes below Mill Creek Lakes 1585 Comment
  UC1196454  Corallorhiza mertensiana Joseph P. Tracy 1947-7-5 17826 Humboldt near Box Camp; Trinity Summit 1524 Comment
  HSC16585  Corallorhiza striata D. E. Anderson 1965-5-15 3684 Humboldt About 7 mi. N of Hoopa on Bloody Camp Prairie Rd. Comment
  RSA183520  Corallorhiza striata D. E. Anderson 1965-5-15 3684 Humboldt About 7 miles north of Hoopa on Bloody Camp Prairie Road Comment
  UC1196463  Corallorhiza striata Joseph P. Tracy 1926-5-15 7497 Humboldt Ashfield Butte Northern Coast Ranges, Kneeland Prairie 762 Comment
  POM319325  Cordylanthus maritimus subsp. palustris Patricia Wilder 1968-8-21 4413 Humboldt Northern Coastal arm of Humboldt Bay, NW of Samoa, on E side of train tracks. 3 Comment
  UC604620  Cordylanthus maritimus subsp. palustris Joseph P. Tracy 1938-7-15 16064 Humboldt borders salt marsh at Fields Landing; Northern Coast Region, around Humboldt Bay 3 Comment
  HSC58546  Cordylanthus tenuis subsp. viscidus Overton, Butler 1979-7-24 9568 Humboldt Near Titlow Hill, close to the town of Willow Creek 1097 Comment
  UC936241  Cordylanthus tenuis subsp. viscidus Joseph P. Tracy 1949-8-4 18411 Humboldt Mud Springs Trinity Summit 1341 Comment
  UC604676  Cordylanthus tenuis subsp. viscidus Joseph P. Tracy 1938-8-14 16118 Humboldt mt. slopes w mouth of river; South Fork of Trinity River 304 Comment
  HSC38284  Corethrogyne filaginifolia J. P. Smith 1976-10-3 8993 Humboldt Samoa Peninsula, just W of the drag strip Comment
  HSC65074  Cornus nuttallii J. P. Smith, Steve Selva 1970-6-14 3853 Humboldt Along Hwy. 96 at Whitmore Creek 152 Comment
  UC502978  Cornus nuttallii Joseph P. Tracy 1932-10-9 10869 Humboldt Trinity R. Valley at Willow Creek; Northern Coast Ranges, Trinity R. Valley 152 Comment
  CAS-BOT-BC212180  Cornus sericea Joseph P. Tracy 1927-11-6 8392 Humboldt Along yager Creek, Carlotta 60 Comment
  HSC82313  Cornus sericea subsp. sericea Thomas W. Nelson, Linda M. Barker 1977-6-3 3385 Humboldt Floodplain of Mad River at S end of Mad River Bridge. 53 Comment
Read comments
May 7 2013
  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
  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
  UCD110089  Corylus cornuta subsp. californica J. Street 1950-6-24 s.n. Humboldt Honeydew. Comment
  HSC5420  Cotula australis D. E. Anderson 1962-4-13 2242 Humboldt Eureka Comment
  SEINET13729302  Crassula aquatica Unknown 1912-6-9 3689 Humboldt Plants of Northern Coast Region of Califonia In muddy ground. ALTON, HUMBOLDT COUNTY Altitude 100 to 300 Comment
  RSA20802  Crataegus douglasii Carl B. Wolf 1937-8-13 s.n. Humboldt North Coast Range, 12 miles E of Hoopa Valley on new road towards Trinity Summit. 1677 Comment
  UC1199460  Crepis acuminata Joseph P. Tracy 1933-7-25 12826 Humboldt Horse Mountain 1432 Comment
  CAS-BOT-BC290585  Crepis capillaris Doris K. Kildale 1927-6-25 3540 Humboldt Shelter Cove Comment
  CAS-BOT-BC290589  Crepis capillaris David D. Keck; J. Clausen 1935-6-16 3397 Humboldt Orick Comment
  JEPS87029  Crepis capillaris Dean W. Taylor 1991-9-15 12288 Humboldt along Hwy 101 near mouth of Tom Creek; North Coast Ranges, Big Lagoon Comment
  CAS-BOT-BC291491  Crepis capillaris Alice Eastwood; John Thomas Howell 1937-6-23 4836 Humboldt 7 miles from Yager on road to Kneeland Comment
  HSC46020  Crepis capillaris Catherine Chin 1978-8-5 93 Humboldt Arcata, along 16th St., 100 yds. E of Union St. Comment
  HSC76217  Crepis pleurocarpa Overton, Butler 1979-7-24 9717 Humboldt Near Black Rock, close to the town of Willow Creek. 1554 Comment
  HSC97632  Crepis pleurocarpa Cara Witte 2007-6-5 207 Humboldt Along Forest Service Road 4N32. Near Grouse Mountain 1413 Comment
  HSC98953  Crepis pleurocarpa Cara Witte 2008-7-28 953 Humboldt Spike Buck Mountain. Forest Service Road 5N18. 1/2 mile from intersection with National Forest 1. 1565 Comment
  RSA43685  Crepis setosa H. M. Pollard 1947-8-21 s.n. Humboldt roadside between Orleans and Boyse Creek Comment
  RSA285966  Crocosmia X crocosmiiflora T. C. Fuller 1968-7-30 17446 Humboldt Northwest corner of overpass of Highway 1 freeway to Garberville, 1 mile south of Fields Landing Comment
  HSC3567  Cryptantha affinis H. E. Parks, J. P. Tracy 1934-6-27 11059 Humboldt Grouse Mtn. 1433 Comment
  UC525589  Cryptantha flaccida Joseph P. Tracy 1930-6-15 8750 Humboldt near Bosworth's; Northern Coast Ranges, Larrabee Creek 457 Comment
  JEPS67641  Cryptantha intermedia Harley P. Chandler Jun 1901 1302 Humboldt Hupa Indian Reservation North Coast Ranges 152 Comment
  UC1191663  Cuscuta salina var. major Malcolm A. Nobs and S. Galen Smith 1949-8-3 1202 Humboldt about 2 mi n Eureka; Humboldt Bay Comment
  JEPS47121  Cuscuta suaveolens Joseph P. Tracy 1918-9-29 5113 Humboldt 2 mi above mouth of South Fork of Eel River (Myers Ranch); Northern Coast Ranges, South Fork of Eel River 60 Comment
  UC922013  Cynodon dactylon Joseph P. Tracy 1949-8-18 16427 Humboldt Eureka 15 Comment
  HSC3641  Cynoglossum grande A. H. Teshima 1963-3-10 5 Humboldt Moonstone Beach area Comment
  UC54748  Cynoglossum grande J. P. Tracy 1901-4-26 1047 Humboldt vicinity Eureka (Humboldt Hill); Humboldt Hill 0 Comment
  HSC74370  Cynoglossum occidentale M. A. Baker 1980-5-18 1289 Humboldt Near Black Mtn. 1006 Comment
  UCD60127  Cynosurus cristatus Ray Evans 1956-7-19 s. n. Humboldt 4.5 miles northwest of Petrolia. Comment
  UCD60133  Cynosurus cristatus R. Tofsrud 1949-7-1 s. n. Humboldt South edge of Scotia. Comment
  POM364982  Cynosurus echinatus Jacqueline Greenleaf 1980-8-5 288 Humboldt Dairy Creek 294 Comment
  SEINET200972  Cyperus aristatus Joseph P. Tracy 1916-9-5 4773 Humboldt S fork of Eel River 4 miles above the mouth. 61 Comment
  HSC75505  Cyperus eragrostis Melinda F. Denton 1981-7-3 4253 Humboldt On Hwy. 36, 32 mi. E of Alton, 17 mi. W of Van Duzen River Rd. 610 Comment
  SEINET200970  Cyperus melanostachyus Joseph P. Tracy 1920-8-15 5383 Humboldt Klamath River at Bluff Creek. 152 Comment
  UC1103636  Cyperus squarrosus Joseph P. Tracy 1921-10-9 5969 Humboldt Mad R. at Blue Lake; Northern Coast Ranges, Mad R. 30 Comment
  UC42487  Cystopteris fragilis C. C. Marshall 1888-1 Humboldt Comment
  HSC14673  Cytisus scoparius J. Mustain 1963-3-30 14 Humboldt Big Lagoon Park. Comment
  HSC89606  Cytisus scoparius M. Roantree 1985-5-7 44 Humboldt E side of Trinidad Head Comment
  UC1103248  Dactylis glomerata Joseph P. Tracy 1919-8-28 5186 Humboldt Eureka; Northern Coast Ranges, Eureka 0 Comment
  CAS-BOT-BC189742  Danthonia californica Joseph P. Tracy 1930-7-10 8860 Humboldt Northern Coast Ranges. Brannan Mountain. 1219 Comment
  CAS-BOT-BC189747  Danthonia californica A. A. Beetle 1942-6-2 3474 Humboldt 3 miles north of Bridgeville. 457 Comment
  UC526686  Danthonia californica var. americana Joseph P. Tracy 1931-5-31 9548 Humboldt Kneeland Prairie Northern Coast Ranges 792 Comment
  UCD60503  Danthonia californica var. americana R. Tofsrud 1947-6-27 s.n. Humboldt About halfway between Yager and Kneeland on county road. 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
  HSC98849  Danthonia unispicata Cara Witte 2008-7-11 870 Humboldt Horse Mountain Botanical Area. 1/2 mi. south from intersection of National Forest 1, Forest Service Roads 6N38 and 6N36. 1413 Comment
  UC1152020  Danthonia unispicata Joseph P. Tracy 1951-6-26 19571 Humboldt Snow Camp and Twin Lakes vicinity Comment
  HSC104098  Darlingtonia californica Monica Rodriguez, William A. Worley 2015-3-21 24 Humboldt Along South Fork Rd, 8.9 mi. from 199 Redwood Hwy. Comment
  CAS-BOT-BC420365  Darmera peltata Duart V. Brown 1947-3-24 5 Humboldt 3 miles N of Willow Creek on W bank of Trinity River Comment
  SEINET6421143 Image available Datisca glomerata Joseph P. Tracy 1932-1 10805 Humboldt Blue Slide, on Van Duzen River 91 Comment
  JEPS15997  Daucus pusillus W. L. Jepson 1932-7-24 16387 Humboldt Mail Ridge Comment
  RSA470773  Daucus pusillus M. O'Mera 1974-6-2 496 Humboldt South Spit to Humboldt Bay Comment
  UC1196317  Delphinium andersonii Joseph P. Tracy 1930-6-21 8778 Humboldt Larrabee Valley Northern Coast Ranges 701 Comment
  UC1196322  Delphinium decorum subsp. decorum J. P. Tracy 1904-5-1 2044 Humboldt bluff back of Bucksport; immediate vicinity of Eureka 0 Comment
  HSC102522  Delphinium decorum subsp. tracyi M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-28 1509 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1106 Comment
  UCR45825  Delphinium decorum subsp. tracyi N. Meiselman, M. Bransom, D. Brown, Ron Hildebrandt 1986-4-19 26 Humboldt North Coast Range, Horse Mountain, 0.5 mi. down Titlow Road from Ski Area 1372 Comment
  HSC92103  Delphinium decorum subsp. tracyi S. Morrissette, J. Williams, K. Kopper 1994-5-6 50 Humboldt 0.4 mi. S of Hwy. 299 on Titlow Rd. 854 Comment
  RSA44425  Delphinium hesperium E. K. Balls, Lee W. Lenz 1956-6-12 21665 Humboldt 9.1 miles NE from Blue Lake along Hwy 299, Arcata to Willow Creek. Comment
  UC1196314  Delphinium hesperium subsp. hesperium Joseph P. Tracy 1934-7-6 13662 Humboldt Iaqua North Coast Ranges 609 Comment
  OBI10845  Delphinium hesperium subsp. hesperium Joseph P. Tracy 1948-6-20 18070 Humboldt Trinity River Valley at Willow Crk 152 Comment
  CAS-BOT-BC10137  Delphinium menziesii Mrs. H. C. Cantelow 1941-4-19 s.n. Humboldt 2.5 mi. NE of Cape Town on road to Ferndale Comment
  HSC35550  Delphinium menziesii D. L. Gray 1964-5-3 6409 Humboldt 61 Comment
  CAS-BOT-BC116467  Delphinium nuttallianum Daniel Howard Norris 1931-5-30 12213 Humboldt ...at crest of ridge on Big Hill Road east of Hoopa Comment
  JEPS8447  Delphinium nuttallianum Rimo Bacigalupi with J. P. Tracy, L. Constance, R. Moran, R. L. Rodriguez, and S. Carlquist 1951-6-14 3411 Humboldt 0.5 mi w Snow Camp (ridge between Mad River and Redwood Creek); Bald Mountain ridge 1432 Comment
  CAS-BOT-BC121960  Delphinium trolliifolium Doris K. Kildale 1927-5-15 3300 Humboldt Petrolia Comment
  CAS-BOT-BC121970  Delphinium trolliifolium Carl B. Wolf 1937-6-19 8916 Humboldt 3 miles NE of Little Van Duzen River on road to Dinsmore's. 762 Comment
  HSC44763  Delphinium trolliifolium Maralyn O'Meara 1972-6-8 93 Humboldt Along Bald Hills Rd, 16.4 mi. E of junction with Hwy. 101 Comment
  POM299320  Delphinium trolliifolium Lester Rowntree 1938-6-4 s.n. Humboldt Stone Lagoon near Orick Comment
  UC503045  Delphinium trolliifolium Joseph P. Tracy 1927-6-5 8099 Humboldt valley of South Yager Creek Northern Coast Ranges 762 Comment
  UC668069  Delphinium trolliifolium Joseph P. Tracy 1935-6-23 14000 Humboldt near Coyote Peak; French Camp Ridge 1066 Comment
  UCSB2009  Delphinium trolliifolium Keator, Glenn 1958-6-18 Humboldt Near Kneeland Comment
  SEINET200651  Deschampsia cespitosa J. P. Tracy 1934-7-20 13465 Humboldt Big Lagoon 6 Comment
  CAS-BOT-BC194294  Deschampsia cespitosa subsp. cespitosa H. S. Yates 1936-6-16 5677 Humboldt 1 mile northeast of Samoa 3 Comment
  HSC9593  Deschampsia danthonioides L. M. Malloy 1965-5-20 27 Humboldt 4 mi. from Arcata on Fickle Hill Rd. Comment
  RSA22686  Deschampsia danthonioides Joseph P. Tracy 1935-6-23 13969 Humboldt French Camp Ridge Comment
  CAS-BOT-BC201773  Deschampsia elongata Doris K. Kildale 1927-7-22 3825 Humboldt Lassecks Peaks near Corral Camp 1661 Comment
  UC1103215  Deschampsia elongata J. P. Tracy 1899-7-22 331 Humboldt immediate vicinity of Eureka 0 Comment
  UC905063  Deschampsia elongata Henry M. Pollard 1948-7-19 Humboldt Orlegno to Red Cap Creek (n. river rd.) Comment
  JEPS53431  Descurainia pinnata W. L. Jepson 1902-7-16 2049 a Humboldt Trinity Summit Comment
Read comments
Jan 17 2008
  UC503031  Dicentra formosa Joseph P. Tracy 1930-8-17 9164 Humboldt Big Lagoon; Northern Coast Region 15 Comment
  POM272535  Dicentra formosa subsp. formosa Lyman Benson 1928-7-12 486 Humboldt Weott Ranger Station. Seaward N Coast mtn range. S Fork Eel River. 61 Comment
  UC1198186  Dichelostemma X venustum Joseph P. Tracy 1928-6-24 8468 Humboldt Valley of South Yager Creek 762 Comment
  HSC48032  Dichelostemma capitatum subsp. capitatum Brad Klipfel 1974-5-27 406 Humboldt Horse Mtn. Comment
  HSC71113  Dichelostemma capitatum subsp. capitatum M. A. Baker 1980-5-23 1379 Humboldt Near Buck Mtn. 1524 Comment
  HSC12535  Dichelostemma congestum J. Allen DeCou 1899-1 Humboldt Willow Creek Comment
  CHSC31277  Dichelostemma ida-maia Mark Stopher 1980-5-28 72 Humboldt Hillside along Hwy 169 1.2 mi e of Martins Ferry Bridge. 170 Comment
  SBBG11069  Dichelostemma ida-maia D. E. Breedlove 1961-7-4 649 Humboldt 10.9 mi W of Willow Crk on US Hwy 299 822 Comment
  RSA53854  Dichelostemma ida-maia Henry M. Pollard 1946-8-16 s.n. Humboldt Across river from Orleans. Comment
  SEINET12053109  Dichelostemma ida-maia J. P. Tracy, Murphy, A. H. 1951-1 19568 Humboldt vicinity of Twin Lakes and Snow Camp Comment
  SEINET8476733  Dichelostemma ida-maia M. J. Williams 1969-5-23 s.n. Humboldt Bald Hills. 152 Comment
  UC666912  Dichelostemma ida-maia Joseph P. Tracy 1937-7-19 15450 Humboldt nw slope Buck Mountain 914 Comment
  HSC20641  Digitalis purpurea F. Morrell 1949-5-17 27 Humboldt Blue Lake Comment
  UC527821  Digitalis purpurea Ira L. Wiggins 1932-6-18 5869 Humboldt mouth of Little River; Little River Comment
  UC198609  Digitalis purpurea Joseph P. Tracy 1917-5-30 4790 Humboldt Dows Prairie Comment
  RSA54137  Digitaria sanguinalis Henry M. Pollard 1944-9-7 s.n. Humboldt Near Orleans. Comment
  UC1103232  Digitaria sanguinalis Joseph P. Tracy 1930-10-12 9212 Humboldt Alton to Fortuna; Eel River 15 Comment
  UC212865  Digitaria sanguinalis Joseph P. Tracy 1919-9-13 5195 Humboldt Trinity River Valley near Willow Creek; Northern Coast Ranges, Trinity River Valley nr Willow Creek 152 Comment
  SEINET13768865 Image available Diplacus aurantiacus Bassett Maguire, Ruth Maguire, C. B. Maguire 1934-1 15332 Humboldt Ten miles South Squaw Creek Comment
  SEINET8733128 Image available Diplacus aurantiacus H. E. Parks, S. T. Parks 1951-1 s.n. Humboldt Along bay shore near landing. Trinidad. Comment
  CAS-BOT-BC208660  Distichlis spicata Joseph P. Tracy 1933-8-22 12989 Humboldt Mouth of Eel River 3 Comment
  HSC2192  Distichlis spicata J. P. Tracy 1933-8-22 12989 Humboldt Mouth of Eel River. 3 Comment
  UC673096  Downingia elegans Joseph P. Tracy 1940-7-7 16673 Humboldt Grouse Mt. 1554 Comment
  RSA93304  Downingia elegans var. corymbosa F. W. Peirson 1923-7-10 3871 Humboldt Wood border opening near road about 6 miles N of Garberville Comment
  SEINET3164219  Drosera rotundifolia N. Dennis 1965-6-30 140 Humboldt Sphagnum bog at Big Lagoon County Park, southwest corner of Big Lagoon Comment
  SFV7745  Dysphania botrys T. Gordon, K. Kimbrough 1975-8-22 1225 Humboldt Eel River. 61 Comment
  UC535737  Echinochloa crus-galli Eleanor Armstrong 1151 Humboldt Richardson Grove Comment
  JEPS19330  Eleocharis bella Joseph P. Tracy 1935-7-27 14299 Humboldt McKay Prairie Trinity Summit 1584 Comment
  SEINET3910832  Eleocharis macrostachya Thomas Nelson 1977-9-22 3749 Humboldt Eureka Quad. Along east side of State Route 101 just north of the Eureka Airport.; 0 Comment
  POM87948  Eleocharis palustris Le Roy Abrams 8267 Humboldt Big Lagoon, south of Orick. Comment
  RSA298364  Eleocharis palustris Thomas W. Nelson 1977-9-22 3749 Humboldt In drainage ditch along east side of State Route 101 just north of the Eureka Airport Comment
  UC249740  Eleocharis parvula Joseph P. Tracy with H. E. Parks 1924-8-3 6744 Humboldt Stone Lagoon 6 Comment
  RSA10137  Elymus glaucus Joseph P. Tracy 1925-7-5 7167 Humboldt High Prairie, on Bald Mountain 1067 Comment
  RSA10138  Elymus glaucus Joseph P. Tracy 1926-6-20 7652 Humboldt Horse Mountain 1402 Comment
  UC38141  Elymus glaucus Joseph Burtt Davy and Walter C. Blasdale 1899-6-27 5878 Humboldt Martin's Ferry Comment
  UCD62280  Elymus glaucus R. Tofsrud 1947-6-29 194 Humboldt About 3 mi. N of Harris on road to Alder Point. Comment
  HSC9728  Elymus mollis subsp. mollis E. W. Styskel 1964-5-7 82 Humboldt 2 miles S of Samoa near Samoa Rd. Comment
  CAS-BOT-BC234111  Elymus multisetus Doris K. Kildale 1928-6-24 5273 Humboldt Horse Mountain 914 Comment
  UC526785  Elymus multisetus Joseph P. Tracy 1933-7-25 12893 Humboldt Grouse Mountain North Coast Ranges 1524 Comment
  HSC102192  Elymus repens M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-4 1106 Humboldt Andy's Camp 1564 Comment
Read comments
Jul 9 2015
  UC1103470  Elytrigia repens Joseph P. Tracy 1940-10-5 16751 Humboldt Trinidad; foot of coast bluff 6 Comment
  RSA256587  Empetrum eamesii subsp. hermaphroditum Gary S. Lester 1975-4-6 604 Humboldt Trinidad State Beach: Megwil Point, on Elk Head, N of Trinidad. 15 Comment
  UC1198484  Epilobium brachycarpum J. P. Tracy 1906-8-18 2541 Humboldt immediate vicinity of Eureka 0 Comment
  UC1222844  Epilobium brachycarpum Joseph P. Tracy 1950-9-10 19355 Humboldt Bear River Ridge 609 Comment
  SBBG60143  Epilobium canum subsp. latifolium L. Rowntree 1931-7-21 Humboldt Mattole River Comment
  HSC54025  Epilobium ciliatum Griswold, Butler 1979-7-12 7194 Humboldt Near Groves Prairie, close to the town of Willow Creek. 1256 Comment
  HSC54703  Epilobium ciliatum Overton, Butler 1979-7-26 10026 Humboldt Near White Rock Spring, close to the town of Willow Creek 1554 Comment
  UC1197011  Epilobium ciliatum subsp. ciliatum J. P. Tracy 1903-8-9 1934 Humboldt Immediate vicinity of Eureka 0 Comment
  RSA32869  Epilobium ciliatum subsp. ciliatum A. A. Heller 1923-7-6 13767 Humboldt Humboldt Camp 10 miles south of Dyerville. Comment
  UC1951301  Epilobium ciliatum subsp. watsonii Robert F. Thorne and P. Everett 1965-8-5 35153 Humboldt Samoa Dunes. Comment
  UC144085  Epilobium densiflorum Joseph P. Tracy 1908-6 2850 Humboldt opposite Buck Mountain; Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  UC161070  Epilobium densiflorum Joseph P. Tracy 1911-7-8 3475 Humboldt near mouth of Willow Creek; Northern Coast Ranges, valley of Trinity River 152 Comment
  UC203562  Epilobium densiflorum Joseph P. Tracy 1918-7-5 5020 Humboldt White Thorn Valley Northern Coast Ranges (in ditch) 304 Comment
  UC505125  Epilobium densiflorum Joseph P. Tracy 1932-8-21 10361 Humboldt Three Cabins Northern Coast Ranges, Chaparral Mountain (lower w foothills of mt.) 457 Comment
  UC1198503  Epilobium densiflorum Joseph P. Tracy 1911-7-11 3509 Humboldt mouth of Supply Creek Northern Coast Ranges, Hoopa Valley 152 Comment
  RSA167260  Epilobium glaberrimum subsp. glaberrimum Joseph P. Tracy 1950-8-7 19272 Humboldt On trail between Box Camp and Croghan [Groghan] Hole, 2 miles east of Box Camp. Trinity Summit 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
  HSC78650  Epilobium minutum D. K. Imper 1982-7-13 1484 Humboldt Near Chaparral Mtn. 1386 Comment
  HSC67212  Epilobium minutum Thomas W. Nelson, James Nelson 1980-6-10 5441 Humboldt Along branch road off Swayback Ridge Rd., 1/2 mi. E of junction 1372 Comment
  HSC58112  Epilobium oregonense G. L. Clifton, Griswold 1979-8-1 12068 Humboldt Near N Trinity Mtn., close to the town of Hoopa 1799 Comment
  CAS-BOT-BC165948  Epilobium septentrionale J. Clausen 1932-9-18 684 Humboldt 2 miles southeast of Petrolia at the bridge across Matolle River Comment
  POM134801  Epilobium septentrionale Carl Duncan 1920-9-22 s.n. Humboldt Hoopa Indian Reservation, Hoopa Valley Comment
  POM168220  Epipactis gigantea Jos Burtt Davy, Walter C. Blasdale 1899-6-28 5895 Humboldt North Coast Ranges: Klamath River near Martins Ferry Comment
  POM301295  Epipactis gigantea Joseph P. Tracy 1949-7-7 18335 Humboldt Blue Slide, on Van Duzen River 91 Comment
  HSC99486  Equisetum arvense K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-14 145 Humboldt Near North Trinity Mtn, 11. 9 mi east of Hoopa on Big Hill Rd (8N01), at Box Camp, Six Rivers National Forest. 1372 Comment
  MACF015742  Equisetum hyemale var. robustum F. A. MacFadden 1935-6-22 13769 Humboldt River bank, near Wrott, Humboldt Co. California Comment
  CAS-BOT-BC57793  Equisetum telmateia Joseph P. Tracy 1937-6-26 15361 Humboldt Trinity River Valley, at Willow Creek. 152 Comment
  HSC885  Equisetum telmateia subsp. braunii S. J. Hawks, D. E. Anderson 1965-5-18 80 Humboldt Luffenholtz Beach Comment
  UC212870  Eragrostis pilosa var. pilosa Joseph P. Tracy 1920-8-15 5361 Humboldt mouth of Bluff Creek (Klamath R.); Northern Coast Ranges, Klamath R. 152 Comment
  CAS-BOT-BC299906  Erechtites minimus Henry M. Pollard 1948-7-21 s.n. Humboldt Near Ferrian Ranch, Orleans Comment
  HSC98010  Ericameria nauseosa var. speciosa Cara Witte 2007-9-14 650 Humboldt National Forest 1. 1/2 mile south of intersection with Forest Service Road 6N01B. 1666 Comment
  HSC56372  Erigeron aliceae Griswold, Butler 1979-7-11 6395 Humboldt Near Snow Camp Mtn., close to the town of Willow Creek. 1320 Comment
  UC1223016  Erigeron aliceae Joseph P. Tracy 1950-7-31 19237 Humboldt top of Grouse Mountain 1524 Comment
  CAS-BOT-BC293511  Erigeron annuus Henry M. Pollard 1947-8-21 s.n. Humboldt Ferrian Ranch, nr. Orleans Comment
  UCR51767  Erigeron bloomeri var. nudatus H. E. Parks 1937-1 24- 22 Humboldt North Coast, Spruce Cove, Trinidad 61 Comment
  CAS-BOT-BC296113  Erigeron foliosus var. confinis Carl D. Duncan 1920-9-22 s.n. Humboldt Hoopa Valley Comment
  CAS-BOT-BC300677  Erigeron foliosus var. mendocinus Doris K. Kildale 1925-7-19 1046 Humboldt Bridgeville 228 Comment
  HSC26467  Erigeron glaucus T. O. Osborne 1970-5-22 28 Humboldt Sugarloaf Rock, Cape Mendocino Comment
  HSC90479  Erigeron glaucus Jean Hanson 1980-8-28 121 Humboldt Indian (Gunther) Island, Humboldt Bay, Eureka. W end of island between dikes. Comment
  SD40123  Erigeron glaucus Edith A. Purer 1932-7-27 4143 Humboldt Comment
  HSC104433  Erigeron maniopotamicus Bianca Hayashi 2013-6-11 Humboldt Twin Lakes area, north of Board Camp Mountain 1280 Comment
  CAS-BOT-BC214580  Erigeron philadelphicus D. E. Breedlove 1962-6-8 3064 Humboldt On U.S. Highway 101, 3 miles south of Orick Comment
  SD56767  Erigeron philadelphicus Darley F. Howe 1963-7-8 3621 Humboldt 8.2 miles west of Bridgeville on California Highway 36. 89 Comment
  UC1223008  Erigeron robustior Joseph P. Tracy 1951-6-26 19585 Humboldt extreme head of Redwood Creek; , Board Camp Mountain Comment
  SEINET11851212  Erigeron strigosus H. P. Chandler 1901-1 1402 Humboldt Klamath River, North Coast Ranges 244 Comment
  RSA256584  Eriodictyon californicum D. E. Anderson 1972-6-20 5737 Humboldt Along the Redwood Valley-Hoopa Rd. east of the summit. Comment
  POM232031  Eriogonum latifolium I. L. Wiggins 1930-7-11 4680 Humboldt Near Samoa Comment
  RSA246713  Eriogonum latifolium Robert F. Thorne, Percy C. Everett 1965-8-5 35162 Humboldt Samoa Dunes. 3 Comment
  CAS-BOT-BC259183  Eriogonum latifolium W. R. Dudley 1899-6-1 s.n. Humboldt Peninsula opposite Eureka Comment
  POM180649  Eriogonum latifolium Mildred E. Mathias 1929-8-4 770 Humboldt Along the coast near Eureka. Comment
  CAS-BOT-BC259542  Eriogonum luteolum var. luteolum Mrs. E. C. Van Dyke 1931-6-30 s.n. Humboldt Willow Creek Comment
  RSA66020  Eriogonum nudum var. auriculatum F. W. Peirson 1923-7-10 4206 Humboldt Garberville. Comment
  CAS-BOT-BC261490  Eriogonum nudum var. nudum A. A. Heller 1924-7-20 13863 Humboldt Along the Eel River at Phillipsville Comment
  UC54741  Eriogonum nudum var. nudum P. E. Goddard 1901-7-12 75 Humboldt Hupa Comment
  RSA60495  Eriogonum nudum var. nudum John H. Thomas 1949-6-13 926 Humboldt Klamath River Valley between Weitchpec and Hoopa Comment
  CAS-BOT-BC261721  Eriogonum nudum var. oblongifolium A. G. Vestal 1937-6-22 s.n. Humboldt Kneeland Prairie Comment
  HSC99068  Eriogonum nudum var. oblongifolium Cara Witte 2007-6-19 297 Humboldt Cold Spring. 1/2 mile south of Titlow Hill. 1393 Comment
  UC54703  Eriogonum nudum var. pubiflorum Harley P. Chandler June, 1901 1468 Humboldt Klamath River North Coast Ranges, Klamath River 365 Comment
  UC205641  Eriogonum roseum Joseph P. Tracy 1919-9-13 5191 Humboldt Trinity River near Willow Creek - Northern Coast Ranges, Trinity River Comment
  HSC39231  Eriogonum umbellatum var. nelsoniorum D. E. Anderson, J. P. Smith 1971-7-6 - 1281 Humboldt Horse Mtn. Comment
  HSC54745  Eriogonum umbellatum var. stellatum G. L. Clifton, Griswold 1979-7-26 10224 Humboldt Near Salmon Mtn., close to the town of Forks of Salmon 1981 Comment
  HSC55182  Eriogonum umbellatum var. stellatum G. L. Clifton, Griswold 1979-8-2 12202 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  HSC98924  Eriophorum crinigerum Cara Witte 2007-5-24 116 Humboldt Horse Mountain Botanical Area. Along Forest Service Rd. 6N38. Near Horse Mountain Mine. 1284 Comment
  BLMAR539  Eriophyllum lanatum Jennifer Wheeler 2009-6-23 539 Humboldt King range, On Paradise Ridge road Comment
  HSC53823  Eriophyllum lanatum var. achilleoides Griswold, Butler 1979-7-10 6269 Humboldt Near Board Camp Mtn., close to the town of Willow Creek 1372 Comment
  UC165859  Eriophyllum lanatum var. achilleoides Joseph P. Tracy 1911-6-29 3268 Humboldt near Hydesville (gravel bar of river); Van Duzen River 60 Comment
  CAS-BOT-BC301180  Eriophyllum lanatum var. arachnoideum Carl B. Wolf 1927-8-29 1193 Humboldt 7 mi. s. of Ferndale & Capetown, Bear River Ridge--Mt. Glen Comment
  CAS-BOT-BC301389  Eriophyllum lanatum var. grandiflorum L. R. Abrams 1918-6-16 7154 Humboldt Willow Creek Comment
  POM358035  Eriophyllum lanatum var. grandiflorum Thomas W. Nelson, Jane P. Nelson 1977-7-4 3578 Humboldt West side of road north from Alder Spring, head of North Fork of Conley Creek 1463 Comment
  UC34185  Eriophyllum lanatum var. grandiflorum Harley P. Chandler 1901-6-1 1301 Humboldt Hupa Indian Reservation North Coast Ranges, Hupa Indian Reservation 152 Comment
  CDA17338  Eriophyllum staechadifolium B. Freeman 2004-8-2 PDR 1403792 Humboldt North Coast; Petrolia Road, Lost Coast, Petrolia. 0 Comment
  UC203994  Erodium botrys Joseph P. Tracy 1918-7-5 5026 Humboldt White Thorn Valley Northern Coast Ranges 304 Comment
  CDA17342  Eryngium articulatum P. Haggard 2004-8-15 PDR 1285928 Humboldt North Coast Ranges; Six Rivers National Forest on Friday Ridge Rd, Willow Creek. 0 Comment
  HSC6782  Erysimum menziesii J. W. Johnson 1962-3-9 1183 Humboldt Samoa Peninsula, on ridges as dune end of trail through Hunt Farm. Comment
  SEINET5342590  Erysimum menziesii J. Tracy 1901-4-14 1019 Humboldt Humboldt Bay. Comment
  HSC57884  Erysimum perenne Walter Overton, Marvin Butler 1979-7-31 11428 Humboldt Near Water Dog Lakes, close to the town of Hoopa 1830 Comment
  CAS-BOT-BC153743  Erythranthe alsinoides Doris K. Kildale 1926-3-21 1576 Humboldt Kneeland Prairie - Summit 853 Comment
  CAS-BOT-BC383156  Erythranthe guttata David B. Lowry 2005-5-16 KLM Humboldt In Klamath River Valley, roadside Hwy. 96 between Weitchpec and Orleans 227 Comment
  CAS-BOT-BC383055  Erythranthe nasuta David B. Lowry 2005-5-14 KNR Humboldt Along Kneeland Road, just south of the intersection with Mountain View Road 658 Comment
  SEINET8229973  Erythranthe nasuta Joseph P. Tracy 1920-5-18 5379 Humboldt South Fork Eel River; from South Fork to Scotia; 4 miles above Dyerville. 61 Comment
  HSC83469  Erythronium californicum R. N. Raynor 1935-4-8 Humboldt Fort Seward Comment
  UC666967  Erythronium californicum Joseph P. Tracy 1938-6-13 15896 Humboldt Horse Mountain 1432 Comment
  HSC15491  Erythronium californicum Paul Shields May 1955 Humboldt 12 mi. W of Willow Creek 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
  CAS-BOT-BC133333  Erythronium revolutum Doris K. Kildale; L. B. Kildale 1930-5-11 9536 Humboldt [Wire Grass] Wiregrass Prairie - The Bald Hills 792 Comment
  UC1197650  Erythronium revolutum Joseph P. Tracy 1927-4-10 7899 Humboldt Berry's North Coast Ranges, Redwood Creek 274 Comment
  UC169914  Eschscholzia californica Harley P. Chandler June, 1901 1538 Humboldt Klamath River North Coast Ranges 457 Comment
  HSC46009  Eschscholzia californica Catherine Chin 1978-9-8 113 Humboldt Arcata, A and 11th St. Comment
  RSA21096  Eschscholzia californica var. crocea Carl B. Wolf 1937-6-14 8824 Humboldt North Coast Range, Kneeland Prairie 823 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
  HSC58822  Eucephalus ledophyllus G. L. Clifton, Griswold 1979-8-2 12244 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  UC1199298  Eucephalus tomentellus Joseph P. Tracy 1930-7-19 9083 Humboldt near McKay Camp; South Fork Mountain 1676 Comment
  HSC39172  Euchiton gymnocephalus D. E. Anderson, J. P. Smith 1971-6-28 - 1230 Humboldt Along Mad River, 2 mi. S of Blue Lake. Comment
  RSA168833  Euchiton gymnocephalus Joseph P. Tracy 1946-6-23 17596 Humboldt Dan McBride's place, southeast end of Kneeland Prairie 762 Comment
  RSA24201  Euonymus occidentalis C. B. Wolf 1941-3-3 9996 Humboldt N. Coast Range, 3.3 miles W of Briceland on the road to Shelter Cove. 152 Comment
  UC183764  Euphorbia crenulata Joseph P. Tracy 1913-6-20 4245 Humboldt opposite Buck Mountain (Dinsmore's Ranch, in Valley of Van Duzen River); Northern Coast Range, Valley of Van Duzen River 762 Comment
  HSC59575  Euphorbia peplus Rick Lundquist 1979-4-24 37 Humboldt Arcata, lower Church parking lot at E end of 16th St. 46 Comment
  HSC22607  Euthamia occidentalis J. P. Smith, J. O. Sawyer 1971-10-16 5050 Humboldt 2.1 mi. E of Carlotta on Calif. 36 Comment
  UC166500  Euthamia occidentalis Joseph P. Tracy 1905-10-1 2395 Humboldt near mouth of Elk River; Northern Coast Range, region about Humboldt Bay 0 Comment
  HSC102649  Festuca californica J. P. Smith 2009-5-31 12610 Humboldt Bald Hills Road. 963 Comment
  CAS-BOT-BC278423  Festuca idahoensis Harley P. Chandler 1901-6-1 1366 Humboldt North Coast Ranges. Hupa Indian Reservation 304 Comment
  HSC32236  Festuca idahoensis J. O. Sawyer 1970-6-24 2230 Humboldt Ridge on Big Hill Rd., E of Hoopa 1189 Comment
  HSC41382  Festuca occidentalis J. O. Sawyer 1970-6-27 2304 Humboldt Site 318. 1494 Comment
  UC38490  Festuca occidentalis Harley P. Chandler Jun 1901 1382 Humboldt Hupa Indian Reservation North Coast Ranges 304 Comment
  UC38531  Festuca occidentalis Harley P. Chandler May 1901 1186 Humboldt Humboldt Bay North Coast Ranges 30 Comment
  UC70908  Festuca occidentalis Joseph Burtt Davy and Walter C. Blasdale 1899-6-10 5396 b Humboldt Hubbards Station Comment
  CHSC32715  Festuca rubra Thomas Nelson; Jane Nelson 1976-7-26 3024 Humboldt The Lassics. Trinity-Humboldt county line. On road cut of 1S07 west of Black Lassic. 1615 Comment
  HSC65107  Festuca rubra J. P. Smith 1970-6-7 3800 Humboldt 0.6 mi. N of Luffenholtz Beach, along Hwy. 101, near Trinidad. Comment
  HSC65121  Festuca rubra J. P. Smith 1973-5-26 6880 Humboldt Scotia Bluffs along the Eel River near Rio Dell. Comment
  UC33690  Festuca rubra Joseph P. Tracy 1899-7-30 6180 Humboldt Ferndale Comment
  UC33725  Festuca rubra Joseph Burtt Davy and Walter C. Blasdale 1899-6-19 5685 Humboldt Hoopa Mt. Comment
  UCD66367  Festuca rubra Linda M. Barker 1976-6-22 1617 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  CAS-BOT-BC282520  Festuca subbiflora Joseph P. Tracy 1901-6-10 1134 Humboldt Eureka 60 Comment
  UC1103706  Festuca subulata Joseph P. Tracy 1908-6 2741 Humboldt opposite Buck Mountain; Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  UC552676  Festuca subulata Joseph P. Tracy 1935-7-27 14295 Humboldt McKay Prairie Trinity Summit 1584 Comment
  HSC39972  Fragaria X ananassa Linda M. Barker 1976-3-22 1335 Humboldt 3 mi. W of Arcata Comment
  HSC40975  Fragaria X ananassa Linda M. Barker 1976-6-14 1590 Humboldt 3 mi. W of Arcata Comment
  UCD113170  Fragaria ananassa subsp. cuneifolia Linda M. Barker 1976-6-14 1590 Humboldt 3 miles west of Arcata. Comment
  CHSC13615  Fragaria chiloensis C. Eiser 1974-4-10 22 Humboldt Along coast, between Orick and Prairie Creek. Redwoods State Park, on bluffs overlooking ocean. Comment
  HSC55336  Fragaria vesca Griswold, Butler 1979-7-12 7183 Humboldt Near Groves Prairie, close to the town of Willow Creek. 1256 Comment
  HSC41312  Frangula californica Brad Klipfel 1974-9-2 544 Humboldt Horse Mtn. Comment
  CAS-BOT-BC59966  Frangula purshiana H. E. McMinn 1922-8-5 347 Humboldt Along Van Duzen River Comment
  CAS-BOT-BC59967  Frangula purshiana H. E. McMinn 1922-8-5 347 Humboldt Along Van Duzen River Comment
  CAS-BOT-BC59969  Frangula purshiana Volney Rattan 1882-6-1 s.n. Humboldt Mad River. Comment
  HSC63001  Frangula purshiana David Wheeler 1979-5-17 114 Humboldt Stagecoach Rd., 1 mi. from the Trinidad Post Office Comment
  POM130724  Frasera albicaulis var. nitida H. P. Chandler 1901-06 1486 Humboldt Klamath River. Comment
  SEINET200390  Frasera speciosa Joseph P. Tracy 10731 Humboldt Trinity Summit , Open places at Corral Prairie. 1585 Comment
  HSC33079  Fritillaria affinis Thomas W. Nelson, J. D. Ackerman 1974-5-14 1268 Humboldt Beside old Samoa-Crannell railroad bed adjacent to the Mad River Slough N of Emerson Mill Comment
  UC1197624  Fritillaria affinis Joseph P. Tracy 1937-6-12 8151 Humboldt Horse Mountain 1371 Comment
  HSC38706  Fritillaria purdyi J. P. Smith 1976-5-29 8816 Humboldt Horse Mtn. 1402 Comment
  UC1197627  Fritillaria purdyi Joseph P. Tracy 1938-6-13 15918 Humboldt Grouse Mountain, at Cold Springs Cold Springs; Grouse Mountain, Cold Springs 1432 Comment
  UC275325  Fumaria officinalis Joseph P. Tracy 1924-5-17 6679 Humboldt Eureka; Northern Coast Ranges 0 Comment
  UC175731  Galium aparine Joseph P. Tracy 1913-6-20 4235 Humboldt lower foothills of nw slope of mt Northern Coast Ranges, Buck Mountain 762 Comment
  UCSB22663  Galium aparine Jensen, Karen 1965-4-15 Humboldt 0.2 km to the west of Hwy 101 at Miranda turnoff 91 Comment
  HSC74746  Galium bolanderi Gail Newton 1981-8-7 2430 Humboldt Near Bug Creek Butte 1244 Comment
  JEPS52858  Galium californicum subsp. californicum Lauramay T. Dempster and G. L. Stebbins 1963-7-9 3850 Humboldt 6 mi e Bridgeville (on Hwy 36 to Dinsmore, sw-facing slope) 609 Comment
  UC1222494  Galium californicum subsp. californicum Joseph P. Tracy 1950-6-15 18827 Humboldt 7 mi n Harris; Mail Ridge, Hubbard's Station Comment
  JEPS52838  Galium muricatum Lauramay T. Dempster and G. L. Stebbins 1963-7-10 3860 Humboldt 2.3 mi s Weott; Avenue of The Giants 60 Comment
  JEPS52975  Galium porrigens var. porrigens Lauramay T. Dempster and Jean Colton 1963-8-7 3887 Humboldt 0.8 mi w Briceland (on road to Shelter Cove) Comment
  UC76673  Galium trifidum var. pacificum Chesnut and Drew 1888-7-8 Humboldt Kneeland Prairie Comment
  RSA256577  Galium triflorum J. O. Sawyer 1970-6-24 2270 Humboldt S of Mill Creek Gap. F.S. Road 10N02. 1433 Comment
  CAS-BOT-BC303395  Gamochaeta ustulata Elizabeth Parsons Hawver 1915-6-1 s.n. Humboldt Carlotta Comment
  CAS-BOT-BC303399  Gamochaeta ustulata Doris K. Kildale 1926-4-30 1934 Humboldt Fruitland Hill - Harris Rd Comment
  UC630637  Garrya elliptica Joseph P. Tracy 1939-3-19 16203 Humboldt near Blue Slide (on Van Duzen River, Root Grade); Van Duzen River 91 Comment
  UC634769  Garrya elliptica H. L. Mason 1932-7-21 7105 Humboldt Big Lagoon Comment
  UCD121099  Garrya elliptica Linda M. Barker 1976-1-24 1310 Humboldt Coastal forest and dunes 3 miles west of Arcata. Comment
  SEINET10453481  Garrya elliptica Mary Susan Taylor 1982-10-24 Taylor 5181 Humboldt T5N R1W nw sec 15. Eureka quad. Samoa, under bridge, ca. 1 mi nw of Eureka. Sea level. Sandy soils. 0 Comment
  CAS-BOT-BC282613  Gastridium phleoides L. R. Abrams 1916-7-11 6025 Humboldt Mouth of Grizzly Creek on Van Duzen River Comment
  HSC22506  Gaultheria shallon R. E. Hafenfeld 1965-5-9 4 Humboldt Jct. of County Rd. and Gold Bluff Beach Rd. Comment
  HSC59055  Gaultheria shallon Thomas Wood 1979-5-4 155 Humboldt Big Lagoon Bog 2 Comment
  HSC7815  Gaultheria shallon Francis Winter 1960-4-23 Humboldt Samoa peninsula 6 mi. W of Arcata Comment
  UCD20675  Gaultheria shallon A. T. Leiser 1980-7-9 s.n. Humboldt Humboldt County, North of Orick, Redwood National Park, Hwy 101 reroute, +- 1000' elevation. -304 Comment
  UCSB12342  Gaultheria shallon 1961-7-4 Humboldt 4.8 miles east of the North Fork of the Mad River on U.S. 299 685 Comment
  HSC99579  Gayophytum humile K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-8-10 244 Humboldt Near North Trinity Mtn, 11. 9 mi east of Hoopa on Big Hill Rd (8N01), at Box Camp, Six Rivers National Forest. 1372 Comment
  HSC28184  Genista monspessulana Richard Curtis 1973-9-27 20 Humboldt Bayside cutoff between Eureka and Arcata. Comment
  CAS-BOT-BC217395  Gentiana affinis var. ovata L. R. Abrams 1916-7-20 6145 Humboldt Eureka Comment
  HSC101055  Gentiana plurisetosa Sydney Carothers 1998-8-10 201 Humboldt Patterson Meadow 1555 Comment
  JEPS61428  Geranium dissectum Lincoln Constance 1934-6-7 833 Humboldt Johnson Prairie South Fork Eel River, Bull Creek Region Comment
  UC169880  Geranium oreganum Joseph P. Tracy Jun 1901 1272 Humboldt Hupa Indian Reservation North Coast Ranges 609 Comment
  RSA275284  Gilia capitata J. P. Smith 1973-5-26 6816 Humboldt Scotia Bluffs along the Eel River near Rio Dell. Comment
  UC1222733  Gilia capitata subsp. capitata Joseph P. Tracy 1950-6-15 18789 Humboldt 7 mi n Harris (Mail Ridge); n of Harris, Mail Ridge Comment
  BLMAR309  Gilia capitata subsp. capitata Jennifer Anthony-Wheeler 2002-6-20 309 Humboldt Gilham butte, Growing along Rim Rd 731 Comment
  RSA742109  Gilia capitata subsp. pacifica Peter L. Morrell, Nicole Deligans 1993-8-14 317 Humboldt North Coast: about 1 mile south of McNutt-Mattole Rd., 5.2 miles south of Devil's Gate, 8.4 miles south of Cape Mendocino. 30 Comment
  UC1197928  Gilia capitata subsp. pacifica Joseph P. Tracy 1937-5-30 15310 Humboldt near Bosworth's (Larrabee Creek); Northern Coast Ranges, Larrabee Creek 457 Comment
  UC133633  Gilia capitata subsp. pacifica Joseph P. Tracy 1907-7-4 2583 Humboldt sandy hillside of coast bluffs between Trinidad and mouth Little River; Northern Coast Ranges, btw Trinidad and Little River 30 Comment
  UC427877  Gilia capitata subsp. pacifica H. E. Parks, J. P. Tracy 1930-5-25 793 Humboldt near Bridgeville; near Bridgeville Comment
  HSC17012  Gilia millefoliata J. W. Johnson 1962-5-13 1356 Humboldt Arcata, Christenson Farm on the Samoa Peninsula, Ridge 3 Comment
  HSC100596  Gilia tricolor Carl C. Marshall May 1887 420 Humboldt Dobbyn's Creek. Comment
  UC602567  Githopsis specularioides Joseph P. Tracy 1932-6-17 10221 Humboldt Three Forks of Mad River North Coast Ranges 883 Comment
  UC176956  Glaux maritima Joseph P. Tracy 1912-6-16 3698 Humboldt near Hookton (Region around Humboldt Bay, Northern Coast Region); Northern Coast Region 0 Comment
  SD42578  Glehnia littoralis Carl B. Wolf 1937-6-18 Humboldt Centerville Beach 3 Comment
  UC1122973  Glehnia littoralis subsp. leiocarpa H. S. Yates 1936-6-16 5652 Humboldt 1/2 mi s Samoa; Eureka Quadrangle Comment
  HSC34278  Glyceria elata Ken Irwin 1975-8-13 Humboldt Grogans Hole Area Comment
  HSC75278  Glyceria elata J. O. Sawyer, D. A. Thornburgh 1980-9-9 4077 Humboldt Mill Creek Lake and surrounding meadows Comment
  SEINET200364 Image available Glyceria elata J. P. Tracy 2770 Humboldt Valley of Van Duzen River; opposite Buck Mtn 780 Comment
  RSA249512  Gnaphalium palustre R. F. Thorne, Percy C. Everett 1965-8-7 35227 Humboldt Samoa Peninsula. 3 Comment
  SEINET10726165  Gnaphalium palustre Harold E. Parks, Susan T. Parks Parks 24080 Humboldt Abundant in newly cultivated areas; Spruce Cove, Trinidad. Comment
  HSC54861  Goodyera oblongifolia G. L. Clifton, Griswold 1979-7-25 10762 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1814 Comment
  UC1196434  Goodyera oblongifolia Joseph P. Tracy 1949-8-7 18447 Humboldt near Box Camp (Trinity Summit); Trinity Summit 1524 Comment
  UC1196437  Goodyera oblongifolia J. P. Tracy 1900-7-4 879 Humboldt opposite Eureka (Ocean Beach at Samoa); Samoa, Ocean Beach Comment
  CAS-BOT-BC304741  Grindelia hirsutula Edward Lee 1934-8-17 1148 Humboldt East shore of Big Lagoon, 35 miles north of Eureka 3 Comment
  HSC37504  Grindelia hirsutula J. D. Ackerman 1975-8-2 613 Humboldt Hwy. 101 between Arcata and Eureka. Humboldt Bay across from Murray Field Comment
  UC581776  Grindelia hirsutula Joseph P. Tracy 1931-9-13 9669 Humboldt mouth of Eel River Eel River (along tidal sloughs) Comment
  POM161906  Grindelia stricta var. stricta Joseph P. Tracy 1921-7-10 5856 Humboldt Big Lagoon. 6 Comment
  HSC76193  Hackelia californica Overton, Butler 1979-7-24 9786 Humboldt Near Black Rock, close to the town of Willow Creek 1463 Comment
  HSC56934  Hackelia micrantha G. L. Clifton, Butler 1979-7-26 9370 Humboldt Near Salmon Mtn., close to the town of Forks of Salmon 1935 Comment
  UC525578  Hackelia micrantha Joseph P. Tracy 1932-7-17 10691 Humboldt head of Devil's Hole; Klamath Mountains, Trinity Summit 1828 Comment
  HSC57955  Hastingsia alba G. L. Clifton, Griswold 1979-7-31 11642 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1719 Comment
  CAS-BOT-BC306868  Helenium bolanderi Carl B. Wolf 1937-8-10 9089 Humboldt Big Lagoon, bog at state park 6 Comment
  HSC5768  Helenium bolanderi H. E. Parks, J. P. Tracy 1937-6-16 15431 Humboldt Trinidad 61 Comment
  SEINET10673347 Image available Helenium bolanderi Albert Kellogg, W. G. W. Harford 1868-1 Kellogg 469 Humboldt Comment
  HSC100435  Helenium puberulum Carl C. Marshall Jul 1886 350 Humboldt Liscom's Hill. Comment
  RSA46472  Heliotropium curassavicum var. oculatum Doris K. Kildale 1926-7-10 2339 Humboldt Stone Lagoon. Comment
  HSC39775  Helminthotheca echioides Peter Sorensen 1976-8-19 Humboldt Woodley Island Comment
  UC1223170  Helminthotheca echioides Joseph P. Tracy 1950-9-10 19361 Humboldt 1 mi inland from Cape Mendocino (1/2 mi s of town, brushy hillside along the coast road); foothills of the Cape Mendocino Ridge 60 Comment
  HSC97359  Hemitomes congestum John DeMartini 1975-7-2 Humboldt Azalea Ave. Maw property, McKinleyville. Bulk Collection 81 Comment
  HSC73668  Hemizonella minima M. A. Baker 1980-7-15 2962 Humboldt Near Whiting Ridge. 1341 Comment
  CAS-BOT-BC310001  Hemizonia congesta subsp. tracyi Alice Eastwood; John Thomas Howell 1937-6-22 4752 Humboldt 11 miles from Blocksburg on road to Bridgeville Comment
  HSC56157  Heracleum maximum G. L. Clifton, Terry Griswold 1979-8-1 12022 Humboldt Near N Trinity Mtn., close to the town of Hoopa. 1798 Comment
  HSC60360  Heracleum maximum Clark L. Miller 1979-5-13 1120 Humboldt N of Trinidad along Patricks Point Dr. Comment
  UC1223122  Hesperevax acaulis var. robustior Joseph P. Tracy 1949-6-12 18312 Humboldt Trinity River Valley at Willow Creek; Trinity River Valley 152 Comment
  UC1222144  Hesperolinon micranthum Joseph P. Tracy 1950-7-6 18994 Humboldt 3 mi s Burr Valley (on the Albee Road); Buck Mountain 1158 Comment
  CAS-BOT-BC143653  Heteromeles arbutifolia Doris K. Kildale 1925-11-15 1344 Humboldt Garberville, South Fork of Eel River Comment
  CAS-BOT-BC311075  Heterotheca oregona var. rudis Doris K. Kildale 1926-8-8 2478 Humboldt Dyerville Bridge 45 Comment
  CAS-BOT-BC311079  Heterotheca oregona var. rudis Frank W. Peirson 1926-7-13 7051 Humboldt Mad River, vicinity of Blue Lake Comment
  JEPS2472  Heterotheca oregona var. rudis Joseph P. Tracy 1930-7-27 9112 Humboldt near Petrolia; North Coast Ranges, Mattole River 15 Comment
  OBI76849  Heterotheca oregona var. rudis J. C. Semple & S. Heard, S. Heard 1986-8-18 8531 Humboldt Garberville. Gravel bar of S fork of Eel River near US 101 at Bear Cyn Rd Comment
  BLMAR42  Heuchera 42 Humboldt King range, Bear Creek, tolkan campsite Comment
  HSC73174  Heuchera micrantha M. A. Baker 1980-5-17 1247 Humboldt Near Le Perron Peak 1066 Comment
  CHSC40208  Heuchera micrantha var. pacifica L. P. Janeway 1984-5-28 842 Humboldt Benbow State Recreation Area along South Fork Eel River. Slope above old Hwy 101. 121 Comment
  HSC55843  Heuchera rubescens G. L. Clifton, Griswold 1979-7-25 10797 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1814 Comment
  CAS-BOT-BC312390  Hieracium albiflorum Doris K. Kildale 1926-6-6 2118 Humboldt Gold Bluffs Comment
  HSC57155  Hieracium albiflorum Overton, Butler 1979-7-26 9954 Humboldt Near Willow Creek, E Fork, close to the town of Willow Creek 1326 Comment
  HSC98324  Hieracium albiflorum Jimerson, J. Pageau 1979-5-24 469 Humboldt Near Orleans 226 Comment
  UC582413  Hieracium albiflorum Joseph P. Tracy 1930-7-16 8915 Humboldt near McKay Camp; South Fork Mountain 1676 Comment
  UC1299270  Hieracium greenei Freed W. Hoffman 1949-7-15 3010 Humboldt a little s of Blue Ridge; Mt. Lassic Comment
  UC1224689  Hierochloe occidentalis D. E. Anderson 1964-3-22 2925 Humboldt on roadcut on n side of creek Jacoby Creek Comment
  CDA38204  Hippuris vulgaris E. C. Whitney 1962-7-23 s.n. Humboldt Pepperwood; R. Wallen property. 0 Comment
  CAS-BOT-BC280735  Holcus lanatus L. R. Abrams 1916-7-11 6018 Humboldt Mouth of Grizzly Creek on Van Duzon [Duzen] River Comment
  CAS-BOT-BC280739  Holcus lanatus Ashley C. Browne 1936-6-11 s.n. Humboldt Patrick's Point State Park Comment
  HSC12345  Holcus lanatus Steve Dorei 1970-10-31 144 Humboldt Scotia bluff area, N side of railroad tracks. Comment
  RSA603763  Holcus lanatus Joseph A. Ewan 1937-7-2 10454 Humboldt Bull Creek State Park, 2 miles from Dryerville. Comment
  HSC23709  Holodiscus discolor Tim Baroni 1971-6-25 43 Humboldt Comment
  HSC98777  Holodiscus discolor Cara Witte 2007-8-8 623 Humboldt Buck Flat. Intersection of National Forest 1 and Forest Service Road 5N01. 1547 Comment
  HSC99588  Holodiscus discolor K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-8-10 253 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  RSA85262  Holodiscus discolor F. W. Peirson 1926-7-13 8655 Humboldt Near Blue Lake, Mad River. Comment
  UC1103485  Hordeum brachyantherum subsp. brachyantherum Joseph P. Tracy 1950-6-17 18832 Humboldt edge of salt marsh at Eureka Slough (Eureka); , Eureka Slough 3 Comment
  CAS-BOT-BC284691  Hordeum jubatum Joseph P. Tracy 1927-7-16 8249 Humboldt Northern Coast Region. Around Humboldt Bay. Mouth of Elk River 3 Comment
  RSA123425  Hordeum marinum subsp. gussoneanum H. S. Yates 1936-6-17 5710 Humboldt Lower N.W. slope of Buck Mountain 793 Comment
  HSC79356  Hordeum murinum subsp. glaucum Kenneth Clark 1980-5-10 644 Humboldt Shelter Cove, coastal bluffs of Point Delgada 3 Comment
  CAS-BOT-BC206122  Hosackia crassifolia D. E. Breedlove 1961-7-4 659 Humboldt along roadside; 2.5 mi E of the Mad River bridge on U.S. 299 426 Comment
  UC1239759  Hydrophyllum fendleri var. albifrons Joseph P. Tracy 1932-7-11 10422 Humboldt Corral Prairie; Trinity Summit 1584 Comment
  HSC104067  Hydrophyllum occidentale Jenny Moore 2003-6-5 Humboldt Six Rivers National Forest; South Fork Mountain area, headwaters of Pilot Creek, Becker Ridge, FS Rd. 3N10 1220 Comment
  HSC13557  Hydrophyllum occidentale H. E. Parks, J. P. Tracy 1935-6-16 Humboldt Buck Mtn. 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
  HSC99506  Hypericum anagalloides K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-22 166 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
  UC1198410  Hypericum anagalloides Joseph P. Tracy 1913-6-1 4076 Humboldt at Eureka Northern Coast Region, Eureka 0 Comment
  UCR32144  Hypericum perforatum David J. Keil 1983-7-1 17279 Humboldt North Coast Range, Bull Creek Flats Road, 2.5 mi. NE of Honeydew Comment
  HSC12005  Hypericum perforatum Wilbur Peterson 1970-10-18 60 Humboldt 200 yards S of Mad River Bridge on Hwy 101 Comment
  HSC22968  Hypericum perforatum S. V. Thompson 1967-7-23 10 Humboldt Along Boulder Creek Comment
  SDSU6911  Hypericum perforatum D. F Howe 1961-8-2 3118 Humboldt 10.5 miles east of Orick on Bald Mt.road, humboldt, Co. 762 Comment
  JEPS36538  Hypochaeris radicata Lincoln Constance 1934-5-31 762 Humboldt along n side Bull Creek (from w boundary of park to Grasshopper Peak Road, Squaw Creek Road); South Fork Eel River, Bull Creek Region, Bull Creek flat Comment
  UC1199471  Hypochaeris radicata Joseph P. Tracy 1921-7-10 5847 Humboldt Big Lagoon Northern Coast Region 6 Comment
  UCSB30595  Hypochaeris radicata Edwards, David 1974-7-13 Humboldt In the NE corner of a field located to the SW of the intersection of Fickle Hill Rd. and Hill St., ca. 1/3 mi. E. of U.S. 101, Arcata 36 Comment
  OBI5958  Iliamna latibracteata Carl B. Wolf 1931-8-28 2367 Humboldt Redwood hwy, 3 mi N of Orick, (Davidson's Ranch on Prairie Crk) 61 Comment
  RSA12527  Iliamna latibracteata Carl B. Wolf 1934-7-3 5907 Humboldt Redwood Hwy 3 miles north of Orick (Davison s Ranch on Prairie Creek) 61 Comment
  HSC44568  Ipomopsis aggregata Brad Klipfel 1973-7-15 186 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  SEINET200732  Ipomopsis aggregata J. P. Tracy 1932-7-12 10440 Humboldt Trinity summit at Corral Prairie 1585 Comment
  HSC13893  Iris douglasiana W. F. Nickel 1965-4-23 Humboldt 10 mi. N of Arcata at Moonstone Beach Comment
  SEINET12056852  Iris douglasiana H. P. Chandler 1901-1 1262 Humboldt Redwood Belt 457 Comment
  UC1103022  Iris douglasiana J. P. Tracy 1901-5-12 1079 Humboldt vicinity Eureka 0 Comment
  UC175302  Iris douglasiana Joseph P. Tracy 1912-4-21 3571 B Humboldt Humboldt Hill; Northern Coast Region, Humboldt Bay Region 0 Comment
  RSA135933  Iris purdyi Lee W. Lenz, E. K. Balls 1955-5-16 20743 Humboldt 2.3 miles southeast of Upper Mattole, on Old Coast Road to Ettersburg 91 Comment
  RSA167433  Iris purdyi Joseph P. Tracy 1950-7-1 18950 Humboldt Friday Camp, Friday Ridge, Grouse Mountain, North Coast Ranges 1220 Comment
  SEINET12056923  Iris purdyi J. P. Tracy 1950-1 18950 Humboldt at "Friday Camp", Friday Ridge. Grouse Mountain 1219 Comment
  RSA135919  Iris tenuissima Lee W. Lenz, E. K. Balls 1956-6-12 21664 Humboldt 9.1 miles northeast from Blue Lake, U.S. Highway 299 488 Comment
  UC936235  Isoetes howellii Joseph P. Tracy 1949-7-19 18398 Humboldt Grouse Mt., Mud Lake 1524 Comment
  JEPS101847  Isolepis cernua Dean W. Taylor 1991-9-15 12285 Humboldt Big Lagoon, along Highway 101 near the mouth of Tom Creek. 3 Comment
  POM187933  Jaumea carnosa Marcus E. Jones 1931-7-16 29118 Humboldt Arcata. Comment
  UC479412  Jaumea carnosa Marcus E. Jones, A. M. 1931-7-16 29118 Humboldt Arcata Comment
  RSA54123  Juncus articulatus Henry M. Pollard 1945-8-26 s.n. Humboldt Between Orleans and Camp Creek. Klamath River Canyon. Comment
  HSC23673  Juncus bolanderi Tim Baroni 1971-6-25 56 Humboldt Comment
  HSC44317  Juncus bolanderi Thomas W. Nelson, Jane P. Nelson 1977-9-3 3735 Humboldt Logging road to Pine Mtn., E of Pine Mtn. 1463 Comment
  HSC45436  Juncus bolanderi Thomas W. Nelson, Jane P. Nelson 1978-7-2 4402 Humboldt Wet alluvial soil at Lost Lake 1433 Comment
  UC421841  Juncus breweri J. B. Davy 1899-6-30 6182 Humboldt Ferndale Comment
  JEPS66935  Juncus bufonius W. L. Jepson 1921-8-7 9327 Humboldt Stone Lagoon Comment
  HSC67455  Juncus bufonius J. P. Smith 1971-10-9 5009 Humboldt Mad River above the Fish Hatchery. Comment
  HSC78252  Juncus bufonius var. bufonius L. P. Janeway, Paul Wilson 1984-5-25 820 Humboldt N Spit of Humboldt Bay; BLM lands near the Coast Guard Station 5 Comment
  HSC98704  Juncus effusus Cara Witte 2007-7-25 574 Humboldt Waterhole off FS Road 5N10. 2 mi E of intersection with National Forest 1. 1369 Comment
  CHSC102918  Juncus effusus subsp. pacificus Peter F. Zika 2007-7-30 23328 Humboldt North Coast. Above E side of Route 101, at high point between Stone and Big Lagoons. 80 Comment
  HSC98575  Juncus ensifolius Cara Witte 2008-8-6 1012 Humboldt Board Camp Mountain. Road to Tri Board Camp. 1486 Comment
  UC419019  Juncus ensifolius H. E. Parks, J. P. Tracy 1924-8-3 2400 Humboldt Big Lagoon Comment
  HSC14029  Juncus lescurii C. B. Wolf 1927-8-29 1205 Humboldt Devil's Gate, S of Cape Mendocino. Comment
  HSC23804  Juncus lescurii Tim Baroni 1971-6-26 69 Humboldt Out the Samoa Peninsula just opposite the Georgia Pacific pulp mill Comment
  HSC96370  Juncus lescurii Gordon Leppig 1999-10-3 1259 Humboldt Big Lagoon Bog, Big Lagoon County Park 3 Comment
  UC1151998  Juncus occidentalis Joseph P. Tracy 1930-7-17 8981 Humboldt near McKay Camp; South Fork Mountain 1676 Comment
  POM160259  Juncus occidentalis Joseph P. Tracy 1926-7-5 7724 Humboldt Valley of South Yager Creek. 762 Comment
  RSA368144  Juncus patens J. P. Smith, Steve Selva 1970-6-14 3822 Humboldt Along Calif. 96 at Whitmore Creek. 152 Comment
  CAS-BOT-BC81147  Juniperus occidentalis Copeland 1903-7-4 3545 Humboldt Klamatha Comment
  CAS-BOT-BC235891  Keckiella corymbosa C. Epling; Wm. Robison 1935-7-24 s.n. Humboldt Dyerville Comment
  NY790279  Keckiella corymbosa J. P. Tracy 1937-7-11 15422 Humboldt Vicinity of Garberville Comment
  RSA120310A  Keckiella corymbosa S. S. Tillett 1956-7-6 605 Humboldt E facing slope above Klamath River, along Ishi Rish Road, 1 mi. n. of Orleans. 168 Comment
  UC153388  Keckiella corymbosa P. E. Goddard 1906-6 635 Humboldt North Fork of Eel River Comment
  CAS-BOT-BC237831  Keckiella lemmonii Marcus E. Jones 1931-7-16 28828 Humboldt Junction, East of Arcata 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
  HSC34289  Kelloggia galioides K. Irwin 1975-8-16 Humboldt Grogans Hole area. Comment
  HSC61761  Kickxia elatine Ruby Van Deventer 1963-7-14 Humboldt Along the Klamath River at Pecwan Comment
  POM206591  Koeleria macrantha Jos Burtt Davy, W. C. Blasdale 1899-6-9 5375 Humboldt Near Harris Comment
  UC38697  Koeleria macrantha Harley P. Chandler June 1901 1342 Humboldt Hupa Indian Reservation; North Coast Ranges, Hupa Indian Reservation 304 Comment
  UC1196121  Kopsiopsis strobilacea Joseph P. Tracy 1918-5-28 4936 Humboldt Northern Coast Ranges. High Prairie on Bald Mountain, High Prairie and Redwood Creek. Comment
  UC1225837  Lamium purpureum Joseph P. Tracy 1945-5-10 17508 Humboldt Eureka Comment
  POM56119  Lapsana communis Joseph P. Tracy 1918-6-23 4957 Humboldt Around Humboldt Bay: Outskirts of Arcata. 61 Comment
  UC128624  Lasthenia californica subsp. californica Joseph Burtt Davy and Walter C. Blasdale 1899-6-9 5380 Humboldt Harris Comment
  UC169320  Lasthenia californica subsp. californica Joseph P. Tracy and Ernest B. Babcock 1912-5-11 3626 Humboldt between Hydesville and Alton; Hydesville 30 Comment
  UC594160  Lasthenia glaberrima S. K. Harris, J. P. Tracy, and H. S. Yates 1936-6-17 3439 Humboldt nw slopes Buck Mountain 822 Comment
  UC1199079  Lathyrus japonicus Joseph P. Tracy 1915-6-6 4647 Humboldt mouth of Elk River Northern Coast Region, Eureka 0 Comment
  UC302109  Lathyrus lanszwertii var. tracyi Joseph P. Tracy 1926-5-2 7432 Humboldt near The South Fork; Northern Coast Ranges, Trinity River Valley 182 Comment
  JEPS55279  Lathyrus latifolius W. L. Jepson 1932-7-30 16464 Humboldt Scotia Comment
  HSC33765  Lathyrus littoralis Paul Dryden 1975-5-24 207 Humboldt Samoa Dunes, across from the boat landing. Comment
  RSA183499  Lathyrus littoralis J. R. Woodside 1963-4-3 31 Humboldt One and one fourth miles north of Fairhaven. Comment
  UC1199081  Lathyrus littoralis Joseph P. Tracy 1933-5-20 12223 Humboldt Cape Mendocino 6 Comment
  CAS-BOT-BC205043  Lathyrus palustris Malcom A. Nobs; S. Galen Smith 1949-8-3 1187 Humboldt At the southern outskirts of Eureka Comment
  HSC38081  Lathyrus polyphyllus Thomas W. Nelson, James Nelson 1976-5-30 2626 Humboldt McKeown Ranch, N of Dinsmore. Comment
  UC931687  Lathyrus polyphyllus C. L. Hitchcock 1949-6-8 19090 Humboldt ca 10 mi w Willow Creek (near Highway 299) Comment
  UC160919  Lathyrus torreyi Joseph P. Tracy 1909-8-1 3062 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  UC709410  Lathyrus torreyi Joseph P. Tracy 1939-7-9 16338 Humboldt Snow Camp 1402 Comment
  RSA64962  Lathyrus torreyi C. L. Hitchcock 1949-6-7 19084 Humboldt Ca 15 miles E of Blue Lake, along Highway #299. Comment
  UC1199065  Lathyrus torreyi Joseph P. Tracy 1921-4-24 5478 Humboldt near Myers; Northern Coast Ranges, South Fork of Eel River 60 Comment
  SEINET12158645  Lathyrus vestitus subsp. bolanderi J. P. Tracy 1949-1 18327 Humboldt on the Butter Valley Rd, 2miE of Kneeland 610 Comment
  HSC103352  Lathyrus vestitus var. ochropetalus Thomas W. Nelson, Jane Nelson 1983-6-12 7407 Humboldt Along Kneeland Rd., ~ .5 mi. SE of junction with Maple Creek Rd. 671 Comment
  CAS-BOT-BC325929  Layia carnosa Joseph P. Tracy 1932-5-16 10106 Humboldt Sand dunes near Samoa, on Humboldt Bay. Comment
  CHSC68554  Layia carnosa Vernon H. Oswald 1997-4-29 8360 Humboldt Samoa Dunes Recreation Area at the south end of the North Spit separating Humboldt Bay from the ocean. 0 Comment
  HSC89532  Layia carnosa C. K. Meyers 1990-6-13 Humboldt South Spit, west side of Humboldt Bay, on bay side of road 3 Comment
  UC1223219  Layia gaillardioides Joseph P. Tracy 1950-6-8 187860 Humboldt Petrolia Comment
  UC154035  Ledum glandulosum J. P. Tracy 1901-6-16 1153 Humboldt immediate vicinity of Eureka 0 Comment
  HSC10273  Leersia oryzoides D. E. Anderson 1963-9-29 2847 Humboldt Fish Lake. Comment
  UC1101252  Lemna valdiviana Malcolm A. Nobs, S. Galen Smith 1949-8-9 1249 Humboldt Clam Beach Comment
  CAS-BOT-BC339128  Leontodon saxatilis subsp. saxatilis Carl B. Wolf 1927-8-22 777 Humboldt Big Lagoon Comment
  UCD115360  Lepidium didymum James P. Smith 1973-5-26 6876 Humboldt Scotia Bluffs along the Eel River near Rio Dell. Comment
  UCD115837  Lepidium strictum Joseph P. Tracy 1946-5-4 17433 Humboldt Trinity River Valley, at Willow Creek. 152 Comment
  UC1199161  Lepidium virginicum Joseph P. Tracy 1916-5-31 4690 Humboldt Holmes Flat, along Eel River from South Fork to Scotia Northern Coast Ranges, Eel River 60 Comment
  HSC71061  Leptosiphon bicolor Thomas W. Nelson, Jane P. Nelson 1980-5-30 3395 Humboldt McKeown Ranch along rd. to Anderson's Ford 854 Comment
  CAS-BOT-BC226712  Leptosiphon latisectus Mrs. H. C. Cantelow 1939-6-4 4125 Humboldt N.E. of Garberville Comment
  UC1225825  Leptosiphon latisectus Joseph P. Tracy 1948-6-13 18048 Humboldt 2 mi n Harris 609 Comment
  CAS-BOT-BC341822  Lessingia nemaclada James T. Vale 1979-7-26 s.n. Humboldt Elk Creek Comment
  CAS-BOT-BC341827  Lessingia nemaclada Joseph P. Tracy 1929-8-18 8656 Humboldt Northern Coast Ranges. Dinsmore's Ranch: On Van Duzen River opposite Buck Mountain 670 Comment
  UC1199276  Leucanthemum vulgare Joseph P. Tracy 1930-8-24 9167 Humboldt Kneeland Prairie 609 Comment
  UCSB15427  Leucanthemum vulgare 1961-7-3 Humboldt Along State Highway 299, 18.5 miles east of U.S. Highway 101 670 Comment
  HSC5359  Leucanthemum vulgare D. E. Anderson 1961-9-13 1825 Humboldt Comment
  HSC67896  Leucanthemum vulgare J. P. Smith 1973-5-26 6806 Humboldt Scotia Bluffs along the Eel River near Rio Dell. Comment
  HSC3107  Leucojum aestivum D. B. Mitchell 1965-3-5 - 3 Humboldt 0.5 mi. N of US Coast Guard Station on Samoa Rd. Comment
  HSC101968  Lewisia nevadensis M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-12 864 Humboldt Patterson Meadows 1555 Comment
  HSC73865  Lewisia nevadensis M. A. Baker 1980-6-28 2500 Humboldt Near Mad River Buttes 1445 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
  SEINET200616 Image available Lewisia triphylla Joseph P. Tracy 1935-7-24 14178 Humboldt Trinity summit near Range Station 1830 Comment
  SEINET200640 Image available Leymus pacificus Joseph P. Tracy 1914-7-16 4586 Humboldt Eureka, Humboldt Bay. Comment
  SEINET200642 Image available Leymus triticoides J. P. Tracy 1929-6-3 8601 Humboldt Trinity River Valley at Willow Creek 152 Comment
  UC1197174  Ligusticum apiifolium Joseph P. Tracy 1930-7-6 8851 Humboldt at crossing of the Iaqua to yager rd. North Yager Creek 396 Comment
  UC1222551  Lilaea scilloides Joseph P. Tracy 1950-6-18 18844 Humboldt s of point Cape Mendocino (at Davis Creek) 3 Comment
  HSC38445  Lilaeopsis occidentalis J. P. Smith 1976-7-3 8937 Humboldt Manila, Samoa Peninsula Comment
  HSC21519  Lilaeopsis occidentalis Jerry Parker 1968-10-26 211 Humboldt Big Lagoon shoreline, near Sphagnum Bog outlet Comment
  UC175813  Lilium columbianum Joseph P. Tracy 1913-7-13 4356 Humboldt Patrick's Point Northern Coast Ranges, Patrick's Point 30 Comment
  UC176689  Lilium columbianum Joseph P. Tracy 1913-7-13 4356 B Humboldt Patrick's Point; Northern Coast Ranges 30 Comment
  CAS-BOT-BC508391  Lilium columbianum Doris K. Kildale 1927-6-26 3596 Humboldt Patrick's Point Comment
  SEINET8480647  Lilium columbianum W. Roderick 1967-7-22 s.n. Humboldt Hwy 101, Near Del Norte Co. line. 305 Comment
  RSA256730  Lilium kelloggii A. Montalvo, J. D. Akerman 1974-8-1 399 Humboldt 1 mile west of Kneeland P.O. on Greenwood Heights Road Comment
  JEPS79921  Lilium occidentale Joseph P. Tracy 1918-7-21 5078 Humboldt around Humboldt Bay Humboldt Hill; Northern Coast Ranges, Humboldt Bay, Humboldt Hill 182 Comment
  SEINET4063663  Lilium occidentale O. M. Clark 1932-1 Humboldt Comment
  UC175925  Lilium occidentale Joseph P. Tracy 1912-6-16 3705 Humboldt near Indianola (on Table Bluff); Northern Coast Region, Humboldt Bay Region 0 Comment
  UC54670  Lilium occidentale J. P. Tracy 1901-6-23 1189 Humboldt immediate vicinity Eureka (near Ryan's Slough Hill) 0 Comment
  UC666959  Lilium occidentale Joseph P. Tracy 1927-9-25 8377 Humboldt 2 mi s Field's Landing (at Still's Ranch) 6 Comment
  HSC102580  Lilium pardalinum subsp. shastense M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-29 1567 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1579 Comment
  CAS-BOT-BC132968  Lilium rubescens Tom Craig 1941-7-2 s.n. Humboldt Near Yager Comment
  CAS-BOT-BC133009  Lilium washingtonianum subsp. purpurascens Miss. M. Meinecke 1926-5-30 s.n. Humboldt Orleans Bar, on Klamath R. Comment
  CDA35335  Limnanthes douglasii B. F. Kemp 1958-5-5 395 -58 Humboldt Loleta. 0 Comment
  HSC15789  Limnanthes douglasii Francis Winter 1960-5-7 Humboldt 3 mi. NE of Redwood Creek Ranch. 610 Comment
  HSC69869  Limnanthes douglasii subsp. nivea Thomas W. Nelson 1978-5-28 4098 Humboldt McKeown Ranch, N of Dinsmore 762 Comment
  UCR160588  Limnobium laevigatum Gordon Leppig, Tony LaBanca 2003-3-13 1823 Humboldt Alder Grove [Rd.] Pond, Arcata 9 Comment
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Jul 6 2015
  POM319075  Limonium californicum Patricia Wilder 1968-8-21 4411 Humboldt Northern Coastal arm of Humboldt Bay, NW of Samoa, on E side of train tracks. 3 Comment
  JEPS23912  Linanthus androsaceus Volney Rattan 1882-1 Humboldt Mouth of Mad River Comment
  UC906691  Linanthus androsaceus Joseph P. Tracy 1943-5-23 17424 Humboldt e of Redwood Creek (Berry's Mt. on Trinity Highway); Berry's Mt. 487 Comment
  UC582685  Linanthus bicolor Joseph P. Tracy 1937-5-17 15287 Humboldt Willow Creek Trinity River Valley 152 Comment
  UC60871  Linanthus bicolor Harley P. Chandler Jun 1901 1417 Humboldt Klamath River North Coast Ranges 243 Comment
  SEINET8729346 Image available Linanthus harknessii Joseph P. Tracy 1933-1 1283 Humboldt Grouse Mountain. Comment
  HSC100667  Linaria canadensis Carl C. Marshall Jun 1886 237 Humboldt Trinidad. Comment
  JEPS11330  Linaria vulgaris Milo S. Baker 1923-8-4 171 Humboldt Stone Lagoon; North Coast, Stone Lagoon Comment
  CAS-BOT-BC416392  Linnaea borealis subsp. longiflora H. M. Pollard 1942-9-12 s.n. Humboldt Near Orleans Comment
  HSC89417  Linum bienne P. A. Daly 1986-1-20 46 Humboldt Trinidad Head, along trail 61 Comment
  HSC98814  Listera caurina Cara Witte 2008-7-7 843 Humboldt National Forest Road 5N10. 2 miles south of intersection with Friday Ridge Road. Near waterhole sign. 1224 Comment
  UC666982  Listera caurina Joseph P. Tracy 1930-7-17 9016 Humboldt near McKay Camp; South Fork Mountain 1676 Comment
  UC275532  Listera cordata Joseph P. Tracy 1924-3-30 6632 Humboldt near Bridgeville; Northern Coast Ranges 182 Comment
  JEPS46624  Lithocarpus densiflorus W. L. Jepson Aug 1902 Humboldt Briceland Comment
  UC1196369  Lithocarpus densiflorus Joseph P. Tracy 1926-10-6 7807 Humboldt between South Fork of Trinity River and Madden Creek (mountain back of Ammon Ranch); Northern Coast Ranges 609 Comment
  UC54688  Lithocarpus densiflorus P. E. Goddard 1901-7-6 46 Humboldt Hupa Comment
  SEINET12034164  Lithocarpus densiflorus K. S. Erdman 1970-1 4841 Humboldt Redwood Creek,about 2-3 mi above the road end. Near mouths of McArthur and Elam Creeks,Redwood Ntl Comment
  CAS-BOT-BC36102  Lithocarpus densiflorus var. densiflorus Carl B. Wolf 1930-10-29 1783 Humboldt Old Coast Road, 4 miles SO. of Honeydew Post Office 304 Comment
  CAS-BOT-BC36150  Lithocarpus densiflorus var. densiflorus L. B. Kildale 1931-8-9 s.n. Humboldt [Threc] Creeks on Willow Creek road Comment
  POM270414  Lithocarpus densiflorus var. densiflorus Lyman Benson 1927-7-12 224 Humboldt Weott Ranger Station; Mt. Range: Seaward N Coast; River: South Fork Eel. 61 Comment
  UC1196482  Lithophragma affine Joseph P. Tracy 1919-5-31 5165 Humboldt along Willow Creek (near its mouth, tributary of Trinity River); Northern Coast Ranges, , trib Trinity River 152 Comment
  UC906704  Lithophragma heterophyllum Harold E. Parks and Joseph P. Tracy 1942-5-16 11558 Humboldt vicinity Garberville 152 Comment
  HSC97506  Lithophragma parviflorum var. parviflorum C. Witte 2007-5-22 80 Humboldt Cold Spring. 1/2 mile south of Titlow Hill. 1392 Comment
  HSC89574  Lobularia maritima M. Roantree 1985-5-15 48 Humboldt E side of Trinidad Head, on slope above Trinidad Bay beach Comment
  UC1199423  Logfia filaginoides Joseph P. Tracy 1927-5-8 7972 Humboldt grassy slopes facing South Fork Eel River; Philipsville 121 Comment
  CAS-BOT-BC283404  Lolium multiflorum W. R. Dudley 1899-6-19 s.n. Humboldt Shady run, Scotia Comment
  UC1103160  Lolium multiflorum Joseph P. Tracy 1948-6-13 18043 Humboldt 7 mi nw Blocksburg (Larrabee Creek); Larrabee 304 Comment
  UC163617  Lolium multiflorum Joseph Burtt Davy 1899-6-15 5527 Humboldt Scotia Comment
  UCD66068  Lolium multiflorum R. N. Raynor 1935-6-7 Humboldt Fort Seward. Comment
  UC249793  Lolium perenne Joseph P. Tracy 1923-8-25 6539 Humboldt Eureka; Northern Coast Ranges, Eureka 0 Comment
  UC1197166  Lomatium californicum Joseph P. Tracy 1912-7-31 3929 Humboldt near summit Buck Mt.; Northern Coast Ranges, Buck Mt. 1676 Comment
  SEINET200763  Lomatium ciliolatum Joseph P. Tracy 1930-7-10 8869 Humboldt Brannan mountain Comment
  UC154252  Lomatium dasycarpum subsp. dasycarpum Joseph P. Tracy July, 1908 2890 Humboldt near Low Gap (ridge between Van Duzen and Mad Rivers, Humboldt & Trinity Co.'s); Northern Coast Ranges, Humboldt & Trinity Co.'s 914 Comment
  HSC102607  Lomatium macrocarpum M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-28 1594 Humboldt Slopes above Bret Hole and below trail 6E18, 1.5 km SSW of Trinity Summit. 1778 Comment
  HSC74284  Lomatium macrocarpum M. A. Baker 1980-7-11 2784 Humboldt Near Red Mtn. 1341 Comment
  HSC74381  Lomatium macrocarpum M. A. Baker 1980-6-28 2477 Humboldt Near Mad River Buttes 1445 Comment
  UC183624  Lomatium utriculatum Joseph P. Tracy 1912-6-9 3671 Humboldt Northern Coast Region, Alton 30 Comment
  HSC21544  Lomatium utriculatum B. R. Templeton 1962-5-24 Humboldt Grassy slopes about 19 mi. E of Arcata on Hwy. 299 Comment
  HSC45502  Lomatium utriculatum M. Alcasas 1978-4-7 6 Humboldt Beside Barry Rd., 125 yds. from junction with Freshwater Rd. 857 Comment
  OBI81593  Lomatium utriculatum Coll. Tracey, Viola Call 1964-6-20 2272 Humboldt South-facing rocky outcropping near summit above Van Duzen river 7miles east of Bridgeville. 853 Comment
  CAS-BOT-BC240473  Lonicera hispidula Henry M. Pollard 1946-9-6 s.n. Humboldt Near Woodson Mine, Orleans region Comment
  UC1239553  Lonicera hispidula var. vacillans Joseph P. Tracy 1923-10-14 6572 Humboldt 5 mi n Blocksburg; Larrabee Creek 457 Comment
  CHSC68491  Lonicera involucrata var. ledebourii Vernon H. Oswald 1997-4-10 8319 Humboldt Road paralleling Hwy 101 between Clam Beach and Little River State Beach, north of Arcata. 30 Comment
  HSC31737  Lonicera involucrata var. ledebourii Donald Spalinger 1974-4-20 15 Humboldt Across from 1756 Ridgewood Dr. 122 Comment
  HSC3932  Lonicera involucrata var. ledebourii H. E. Parks May 1935 5542 Humboldt Spruce Cove, Trinidad. Comment
  POM318797  Lonicera involucrata var. ledebourii Patricia Wilder 1968-8-21 4369 Humboldt Big Lagoon Park, just west of U.S. 101; Mt. Range: Coast range; Drainage Area: Big Lagoon to Pacific Ocean. 15 Comment
  POM210206  Lotus aboriginus H. E. Parks 1932-07 3698 Humboldt Bishop Pine Lodge, Trinidad. 61 Comment
  UC1197313  Lotus aboriginus Joseph P. Tracy 1927-8-22 8354 Humboldt Bald Mt. Northern Coast Ranges 914 Comment
  HSC90323  Lotus corniculatus Jean Hanson 1980-6-22 106 Humboldt Indian (Gunther) Island, Humboldt Bay, City of Eureka. W end of Island in mud between dikes. Comment
  HSC98876  Lotus crassifolius var. crassifolius Cara Witte 2008-7-25 928 Humboldt Horse Mountain Botanical Area. At intersection of 6N36B and Forest Service Road 6N36A. 1355 Comment
  UC726594  Lotus denticulatus A. A. Heller 1923-7-10 13791 Humboldt between Scotia and Pepperwood; Eel River Comment
  UC199807  Lotus denticulatus Chesnut and Drew Jul 1888 Humboldt Bank of Mad River Mad River Comment
  HSC98247  Lotus formosissimus D. E. Anderson 1963-5-25 2485 Humboldt 2-3 mi. N of Capetown Comment
  UC1073328  Lotus formosissimus George B. Rossbach 1955-6-10 332 Humboldt Madison Grant Elk Refuge Prairie Creek Redwoods State Park Comment
  UC162849  Lotus micranthus J. P. Tracy 1902-6-20 1750 Humboldt immediate vicinity Eureka 0 Comment
  JEPS55502  Lotus micranthus Lincoln Constance 1934-5-23 610 Humboldt above Look Prairie; South Fork Eel River, Bull Creek Region 365 Comment
  UC1223423  Lotus pinnatus Joseph P. Tracy 1937-7-19 15461 Humboldt Larrabee Valley 731 Comment
  SEINET3560065 Image available Lotus subpinnatus Joseph P. Tracy 1906-7-4 2521 Humboldt Near Hydesville, Yager Creek 61 Comment
  HSC56969  Lotus unifoliolatus var. unifoliolatus Overton, Butler 1979-7-23 9498 Humboldt Near Titlow Hill, close to the town of Willow Creek. 1280 Comment
  JEPS43859  Ludwigia palustris Jos. P. Tracy 1926-8-12 7765 Humboldt near the S. Fork Trinity R. Valley 182 Comment
  HSC49991  Luina hypoleuca M. A. Baker 1979-6-7 799 Humboldt Willow Creek Canyon Comment
  UC1223276  Lupinus albicaulis var. shastensis Joseph P. Tracy 1937-8-12 15656 Humboldt Snow Camp 1402 Comment
  UC1223267  Lupinus albicaulis var. shastensis Joseph P. Tracy 1949-6-25 18340 Humboldt at Big Hill on road w Box Camp (w slope of summit Trinity Summit); Trinity Summit, at Big Hill 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
  HSC60073  Lupinus albifrons var. flumineus M. A. Baker 1978-5-6 498 Humboldt 2 km. W of Weitchpec along Klamath River. 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
  HSC40973  Lupinus arboreus Linda M. Barker 1976-5-13 1494 Humboldt Lanphere-Christensen Dunes; 3 mi. W of Arcata Comment
  SD81280  Lupinus arboreus Darley F. Howe 1969-5-30 4586 Humboldt 2.4 miles south of Orick on Hwy 101, fresh-water lagoon Comment
  HSC40960  Lupinus bicolor Linda M. Barker 1976-6-1 1564 Humboldt Lanphere-Christensen Dunes, 3 mi. W of Arcata. Comment
  CDA27401  Lupinus bicolor J. Lumbert, J. Robinson 2005-6-8 6 Humboldt 0.4 mile south of Highway 299 on Titlow Hill Road. Comment
  JEPS82142  Lupinus constancei Thomas W. Nelson and Jane P. Nelson 1982-7-9 7079 Humboldt Mt. Lassic (Signal Peak) and saddle to e North Coast Ranges, Blockburg Quad., Mt. Lassic (Signal Peak; Blocksburg Quadrangle on Mt. Lassic (Signal Peak), Humboldt Co. 1767 Comment
  HSC47610  Lupinus densiflorus J. P. Smith 1977-4-23 9026 Humboldt 2.5 mi. S of Shelter Cove Rd., S Fork of Bear Creek at Wailaki Campground. 561 Comment
  UC659303  Lupinus elmeri Charles Piper Smith 1929-7-12 4406 Humboldt So<uth> Fork Mtn. Blake Lookout, South Fork Mtn.; Trinity N.F., So<uth> Fork Mountain Comment
  HSC35605  Lupinus latifolius subsp. viridifolius Thomas W. Nelson, Jane P. Nelson, James Nelson 1975-7-15 2016 Humboldt French Camp, Bald Hills. Comment
  HSC98892  Lupinus latifolius var. latifolius Cara Witte 2008-6-18 749 Humboldt Horse Mountain Botanical Area. Approximately 1 mile east of junction 6N36 and 6N36A. 1394 Comment
  UC1223264  Lupinus littoralis Joseph P. Tracy 1934-7-21 13481 Humboldt Samoa Sand Dunes Comment
  UC1197271  Lupinus nanus Joseph P. Tracy 1913-6-11 4090 Humboldt near Little Van Duzen Bridge 762 Comment
  UC198578  Lupinus rivularis Joseph P. Tracy 1917-5-26 4785 Humboldt at Eureka (on bluff at Bucksport); Northern Coast Ranges 0 Comment
  CHSC943  Lupinus variicolor M. Underhill 1952-7-13 Humboldt 0 Comment
  HSC64637  Luzula comosa Ruby Van Deventer 1959-6-20 Humboldt Humboldt-Del Norte county line, Onion Lake 1220 Comment
  UC1103683  Luzula comosa Joseph P. Tracy 1923-6-24 6354 Humboldt between High Prairie and Snow Camp (Bald Mountain); Northern Coast Ranges, Bald Mountain 1066 Comment
  UC1152129  Luzula comosa Joseph P. Tracy 1930-7-23 9128 Humboldt at Cold Springs (Grouse Mountain); , at Cold Springs 1432 Comment
  UCSB587  Luzula parviflora Parks, H.; Parks, S. 1952-06 Humboldt Bishop Pine Lodge; Trinidad Comment
  RSA32655  Lychnis coronaria Doris K. Kildale 1927-7-3 3651 Humboldt Willow Creek Flat. Comment
  UC1745148 Image available Lycopodium clavatum Clare T. Golec 2000-7-13 Humboldt Spur ridge above Mad R. SE of Blue Lake 76 Comment
  UC577389  Lycopus uniflorus Joseph P. Tracy 1925-10-18 7284 Humboldt Big Lagoon Northern Coast Region, Big Lagoon 6 Comment
  HSC96513  Lysichiton americanus Gordon Leppig 1999-4-15 1114 Humboldt Big Lagoon County Park, Big Lagoon Bog 3 Comment
  UCR179284  Lysichiton americanus R. G. Swinney 1968-3-29 238 Humboldt East of Humboldt State College, Arcata 152 Comment
  HSC25657  Lysichiton americanus Mike Silbernagle, Dennis Knuckles 1972-10-12 5826 Humboldt McKinleyville, field bounded by N Central, Norton Rd. and Dow's Prairie Rd. Comment
  UC1199114  Madia Joseph P. Tracy 1906-7-4 2537 Humboldt on bar of Yager Creek; Hydesville 60 Comment
  CAS-BOT-BC342804  Madia elegans Henry M. Pollard 1945-9-4 s.n. Humboldt Near Camp Creek, east side of Klamath River Comment
  UC673205  Madia elegans Lincoln Constance and Reed C. Rollins 1942-5-11 2874 Humboldt 5 mi s Hoopa; North Coast Ranges, Hoopa Valley 121 Comment
  CAS-BOT-BC343021  Madia gracilis Ira L. Wiggins 1930-7-11 4679 Humboldt Near Samoa Comment
  UC495628  Madia gracilis Joseph P. Tracy 1930-6-29 8816 Humboldt Buck Mountain; Northern Coast Ranges 762 Comment
  RSA134601  Mahonia nervosa P. C. Everett, E. K. Balls 1959-10-25 23966 Humboldt 8.8 mi. ne. from Blue Lake, U.S. Hwy 299, Arcata to Willow Creek. 274 Comment
  HSC89446  Maianthemum dilatatum P. A. Daly 1984-5-13 23 Humboldt Along trail at Trinidad Head 61 Comment
  SBBG8899  Maianthemum dilatatum H. and M. Dearing 1939-5-26 3447 Humboldt Bishop Pine Lodge, N of Trinidad Comment
  POM87668  Maianthemum dilatatum Le Roy Abrams, Rimo C. Bacigalupi 8300 Humboldt Near northern county line Comment
  RSA244984  Maianthemum dilatatum M. N. Gold 1966-5-15 25 Humboldt Dry Lagoon State Park, 13 miles north of Trinidad Comment
  SBBG114438  Maianthemum dilatatum D. Leaberry 1990-9-24 Humboldt Prairie Crk Comment
  SEINET12043868  Maianthemum dilatatum H. C. Cantelow 1936-1 s.n. Humboldt 5 mi N of Orick Comment
  UC726017  Maianthemum dilatatum A. A. Heller 1937-6-8 15899 Humboldt 3 mi. n. Trinidad (forest near coast at Bishop Pine Lodge); Bishop Pine Lodge Comment
  UCD69911  Maianthemum dilatatum D. Sanchez-Mata 1998-6-10 s.n. Humboldt Trinidad-Klamath Glenn. Prairie Creek State Park. Prairie Creek Trail. Temperate coast redwood forests with Sitka spruce: Tsugo heterophyllae-Sequoietum sempervirentis Rivas-Martinez, M. Costa and Sanchez-Mata 1998. 125 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
  HSC74431  Maianthemum stellatum Gail Newton 1980-8-10 2061 Humboldt Near Blake Mtn. 1707 Comment
  HSC98155  Maianthemum stellatum F. B. Plett 1963-4-21 19 Humboldt 1.5 mi. N of Trinidad along old Hwy. 101 Comment
  UC204742  Malacothrix floccifera Joseph P. Tracy 1918-7-6 5049 Humboldt near Humboldt-Mendocino County line; Northern Coast Ranges, South Fork of Eel River 152 Comment
  UC535702  Malacothrix floccifera Eleanor Armstrong 1934-8-24 1191 Humboldt Richardson Grove 121 Comment
  UC1409146  Marah oregana Larry DeBuhr, Gary Wallace 1973-5-19 1116 Humboldt Gold Bluff Beach Prairie Creek Redwood State Park Comment
  HSC10337  Melica californica J. A. Waller 1965-5-2 31 Humboldt Along Hwy. 96 near Willow Creek. Comment
  SEINET10599370  Melica californica Joseph P. Tracy 1913-6-18 Tracy 4195 Humboldt Gravelly grassy hillside, Dinsmore's Ranch, in valley of Van Duzen River opposite Buck Mountain. 762 Comment
  CAS-BOT-BC281319  Melica harfordii David D. Keck 1948-7-2 6012 Humboldt 1 mile N of Richardson Grove, US Highway 101 highway, along S Fork of Eel River, S facing road cut and ditch Comment
  JEPS71244  Melica harfordii W. L. Jepson 1936-8-8 17860 Humboldt Richardson Grove; South Fork Eel River Comment
  UCD88315  Melica stricta A. H. Murphy 1951-4-18 s.n. Humboldt Ft. Seward. Next to railroad right-of-way adjacent to river in shade. 182 Comment
  HSC10366  Melica subulata E. W. Styskel 1963-5-16 30 Humboldt 3.0 mi. SE of Korbel on Snow Camp Rd. 290 Comment
  UCD88641  Melica subulata A. H. Murphy 1950-5-5 s.n. Humboldt Bald Hills Rd., about 3 mi. east Orich. Comment
  UCSC000054  Melica subulata August L. Hormay 1932-5-11 s.n. Humboldt Korbel Comment
  HSC71635  Melilotus albus J. P. Smith 1973-5-26 6875 Humboldt Scotia Bluffs along the Eel River near Rio Dell Comment
  HSC79364  Melilotus indicus Kenneth Clark 1980-5-10 654 Humboldt Along coastal bluffs of Point Delgada, Shelter Cove 6 Comment
  UC1225834 Image available Mentha aquatica Joseph P. Tracy 1943-11-14 17451 Humboldt 2 mi s Field's Landing (along edges of foothills); s of Field's Landing 6 Comment
  HSC99607  Mentha canadensis C. B. Wolf 1927-8-22 768 Humboldt Big Lagoon Comment
  UC577344  Mentha canadensis Joseph P. Tracy 1934-7-30 13501 Humboldt along coast in front of South End Stone Lagoon (Dry Lagoon); , in front of South End of Stone Lagoon 3 Comment
  UC577378  Mentha canadensis Joseph P. Tracy 1933-10-15 13098 Humboldt South Fork of Eel River Miranda; Northern Coast Ranges, South Fork of Eel River 121 Comment
  SD148130  Mentha pulegium G. K. Helmkamp, E. A. Helmkamp 2001-7-8 6987 Humboldt Ca-36, along the Van Duzen R. 19.6 miles east of U. S. 101. 136 Comment
  JEPS42754  Mentzelia dispersa Joseph P. Tracy 1937-7-24 15521 Humboldt Trinity Summit, Devil's Hole 1676 Comment
  UC166030  Mentzelia dispersa Joseph P. Tracy 1908-6 2843 Humboldt n/w slope Buck Mountain; Northern Coast Ranges 1219 Comment
  HSC38431  Mentzelia laevicaulis J. P. Smith 1976-10-30 8996 Humboldt Mad River, E of Essex Lane exit. Comment
  JEPS26724  Mentzelia laevicaulis var. laevicaulis W. L. Jepson 1936-8-17 17939 Humboldt near Arcata; Mad River Comment
  UC1225906  Menziesia ferruginea Joseph P. Tracy 1947-5-24 17687 Humboldt Big Lagoon 15 Comment
  CAS-BOT-BC428712  Micranthes californica Joseph P. Tracy 1927-3-27 7851 Humboldt Northern Coast Ranges. Trinity River Valley, near the South Fork. 182 Comment
  SEINET7887162 Image available Micropus californicus Unknown 1942-1 s.n. Humboldt Harris Road, 1 mile east of Garberville 30 Comment
  CHSC35518  Micropus californicus var. californicus Thomas Nelson; James Nelson 1976-5-30 2621 Humboldt McKeown Ranch north of Dinsmore. Comment
  UC1199336  Micropus californicus var. californicus Joseph P. Tracy 1927-6-5 8105 Humboldt Valley of South Yager Creek 762 Comment
  UC164802  Micropus californicus var. californicus Joseph P. Tracy 1906-7-4 2527 Humboldt near Hydesville (Yager Creek); Northern Coast Region, Yager Creek 60 Comment
  HSC102916  Microseris M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-3 1087 Humboldt Patterson Meadows 1555 Comment
  UC180181  Microseris borealis Joseph P. Tracy 1914-9-6 4611 Humboldt peat bog near Seidell Ranch (between High Prairie and Snow Camp); Northern Coast Ranges, Bald Mountain 1219 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
  CAS-BOT-BC322683  Microseris laciniata K. L. Chambers 1969-5-25 2921 Humboldt On road to Harris about 1 mile east of the freeway overpass at Garberville Comment
  UC129386  Microseris laciniata subsp. leptosepala J. Burtt Davy 1899-6-22 5864 Humboldt Trinity Summit North Coast Ranges, Trinity Summit Comment
  RSA72856  Microseris leptosepala A. Kellogg, W. G. W. Harford 1868-09 567 Humboldt [Unspecified] Comment
  UC582708  Mimulus arvensis H. E. Parks and Joseph P. Tracy 1931-5-9 12541 Humboldt near Miranda 60 Comment
  HSC26881  Mimulus aurantiacus var. aurantiacus Clifton Raymond Chesbrough 1973-6-19 88 Humboldt 0.5 mi. S of Trinidad along the coast Comment
  HSC56069  Mimulus breweri G. L. Clifton, Griswold 1979-7-31 11735 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa. 1845 Comment
  SBBG66765  Mimulus dentatus L. Rowntree 1931-7-24 Humboldt Carlotta Comment
  UC1281762  Mimulus dentatus Richard Spellenberg 1965-6-14 1133 Humboldt about 1 1/2 mi e Bayside (on road leading up to Jacoby Creek (Bayside is 2 mi s of Arcata)) Comment
  UC418983  Mimulus dentatus H. E. Parks May 1930 Humboldt above Carlotta; Van Duzen River Comment
  UC1103337  Mimulus douglasii Joseph P. Tracy 1930-5-4 8689 Humboldt Larrabee Valley Northern Coast Ranges 701 Comment
  SEINET10570226  Mimulus floribundus Charlene A. Bennett 1976-8-6 Bennett 484 Humboldt Collected by hwy 101, n side of orick. Rocky area, densely forested by river. Comment
  UC169014  Mimulus floribundus Harley P. Chandler June, 1901 1481 Humboldt between Orleans and Somes Bar; North Coast Ranges, Klamath River 304 Comment
  UC147914  Mimulus grandis J. P. Tracy 1900-8-5 911 Humboldt immediate vicinity Eureka 0 Comment
  HSC79509  Mimulus guttatus Kenneth Clark 1980-4-18 592 Humboldt Dead Man's Gulch 12 Comment
  JEPS10474  Mimulus guttatus Lincoln Constance 1934-5-26 683 Humboldt s end Dyrville Bridge; South Fork Eel River, Bull Creek Region 45 Comment
  HSC45271  Mimulus guttatus M. Alcasas 1978-6-3 116 Humboldt On Titlow Hill Rd., 1.3 mi. from Hwy. 299 1463 Comment
  RSA46855  Mimulus guttatus Doris K. Kildale 1927-6-25 3566 Humboldt Between Horn and Shelter Cove. Comment
  UC535723  Mimulus inodorus Eleanor Armstrong 1934-8-18 1138 Humboldt Richardson Grove 121 Comment
  JEPS10788  Mimulus inodorus Joseph P. Tracy 1923-9-16 6551 Humboldt near South Fork; Trinity River Valley 182 Comment
  UC1222801  Mimulus inodorus Joseph P. Tracy 1950-8-8 19283 Humboldt Croghan Hole Trinity Summit 1676 Comment
  UC147880  Mimulus inodorus Joseph P. Tracy 1908-6 2697 Humboldt opposite Buck Mountain; Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  UC582716  Mimulus inodorus Joseph P. Tracy Jul 16 1930-Jul 19 1930 8983 Humboldt McKay Camp Northern Coast Ranges, South Fork Mountain 1676 Comment
  POM265898  Mimulus kelloggii Lincoln Constance, R. C. Rollins 1942-5-12 2894 Humboldt At junction of Klamath and Salmon rivers, 1 mile south of Somes Bar. 152 Comment
  HSC104076  Mimulus layneae S. Carothers 2002-6-11 Humboldt Six Rivers National Forest; along Ruth Lake Rd., between Ruth and bridge crossing to Shannon Butte 841 Comment
  HSC24378  Mimulus moschatus J. O. Sawyer 1970-6-24 2253 Humboldt S of Mill Creek Gap, FS Rd. 10N02 1433 Comment
  HSC103113  Mimulus nanus M. Mesler 2010-7-21 837 Humboldt South Fork Mtn, FS rd 4N12 1700 Comment
  UC41845  Mimulus nanus var. nanus Chesnut and Drew 1888-7-19 Humboldt Pilot Ridge Comment
  JEPS28973  Mimulus nanus var. nanus Joseph T. Gregory 1933-7-15 438 A Humboldt near MacKay Camp; South Fork Mt. 1737 Comment
  UC1103542  Minuartia californica Joseph P. Tracy 1925-5-30 7033 Humboldt Larribee Valley Northern Coast Ranges 701 Comment
  UC1198335  Minuartia douglasii Joseph P. Tracy 1933-6-13 12559 Humboldt Bairs Ranch Redwood Creek 609 Comment
  HSC70773  Mitella diversifolia R. York 1980-5-17 553 Humboldt Near Le Perron Peak 1066 Comment
  HSC76262  Mitella trifida Teresa Prendusi 1981-7-21 270 Humboldt Near Whiteys Peak 1646 Comment
  HSC4066  Moehringia macrophylla Elrid H. Spinas 1948-5-15 1 Humboldt Horse Mtn. Comment
  HSC96209  Moehringia macrophylla Rick Lindquist, C. Riley 2005-6-3 2 Humboldt 19.3 mi. S of Hwy. 299 on NF1 1205 Comment
  UC1198327  Moehringia macrophylla Joseph P. Tracy 1927-6-12 8131 Humboldt Horse Mountain 1432 Comment
  CAS-BOT-BC221969  Monardella odoratissima subsp. glauca Henry M. Pollard 1943-8-1 s.n. Humboldt Orleans Mt. 1828 Comment
  UC176998  Monardella odoratissima subsp. glauca Joseph P. Tracy 1912-7-31 3928 Humboldt Near summit Buck Mountain; Northern Coast Ranges 1676 Comment
  UC1239678  Monardella odoratissima subsp. pallida Joseph P. Tracy 1932-7-12 10436 Humboldt Corral Prairie Trinity Summit 1584 Comment
  HSC101619  Monardella odoratissima subsp. pallida Cara Witte 2007-6-28 390 Humboldt Intersection of 6N08 (Friday Ridge Road) and 5N39. 1475 Comment
  RSA0022803  Monardella villosa subsp. subserrata L. R. Abrams 1922-6-25 8221 Humboldt Camp Cemi [?], north Garberville. Comment
  UC203967  Monardella villosa subsp. villosa Joseph P. Tracy 1918-7-2 4984 Humboldt Mattole Valley, mouth of Honey Dew Creek; Northern Coast Ranges 152 Comment
  JEPS14830  Monotropa hypopitys W. L. Jepson 1902-6 1946 Humboldt woods near Green Pt. Ranch; Hupa Road Comment
  RSA249710  Monotropa hypopitys R. F. Thorne, Percy C. Everett, K. Thorne 1965-8-5 35132 a Humboldt Wailaki Recreation Site. 610 Comment
  CAS-BOT-BC444830  Montia fontana Doris K. Kildale 1927-7-22 3922 Humboldt Lassecks Peaks - Corral Camp 1661 Comment
  HSC55167  Montia parvifolia Gilbert Muth 1979-8-1 12160 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1677 Comment
  UC1561278  Montia parvifolia Barbara Ertter with Thomas J. Delendick 1987-5-16 6935 Humboldt 3 mi e of Berry Summit (on Hwy 299, 20 air mi e of Arcata, on s side of road above Willow Creek) 800 Comment
  HSC37958  Morella californica Peter Sorensen 1976-6-12 Humboldt Woodley Island, Humboldt Bay Comment
  HSC59071  Morella californica Thomas Wood 1979-5-4 153 Humboldt Big Lagoon Bog, E edge of bog 3 Comment
  UCD110276  Morella californica Linda M. Barker 1976-6-1 1542 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  UC1145147  Muhlenbergia mexicana Joseph P. Tracy 1916-9-5 4774 Humboldt 4 mi. above mouth of S. Fork Eel R.; S. Fork Eel R. 60 Comment
  SDSU19202  Myosotis latifolia Michael G. Simpson, Michael Mayer 2008-5-28 3016 Humboldt Upland above College Cove, Trinidad State Beach, along path to beach, down from south parking lot. 61 Comment
  POM257618  Myrica californica C. L. Hitchcock, J. S. Martin 1939-7-14 5437 a Humboldt Bluffs facing sea at Shelter cove Comment
  RSA47091  Myrica californica Doris K. Kildale 1926-11-28 2866 Humboldt Patrick s Point Comment
  HSC77873  Myriophyllum sibiricum Ted Jacobson 1975-11-3 Humboldt Stone Lagoon 0 Comment
  HSC91593  Narcissus tazetta E. Mackey 1986-7-21 Humboldt Patrick's Point State Park near Ceremonial Rock. Comment
  UC1173634  Narthecium californicum Joseph P. Tracy 1934-8-29 13629 Humboldt meadow at McKay Camp (S. Fork Mt.); S. Fork Mt. 1676 Comment
  HSC90662  Nasturtium officinale Gail Newton 1982-6-10 3637 Humboldt Elk River Wildlife Area, Eureka Comment
  HSC59207  Nasturtium officinale Terry Roth 1979-4-28 19 Humboldt Glendale exit off of Hwy. 299, gravel road towards Mad River 30 Comment
  JEPS79936  Navarretia atractyloides Joseph P. Tracy 1927-8-7 8307 Humboldt Willow Creek Schoolhouse Trinity River Valley, Willow Creek 152 Comment
  HSC73502  Navarretia capillaris Gail Newton 1980-7-11 1325 Humboldt Near Red Mtn. 1341 Comment
  HSC56334  Navarretia divaricata Overton, Butler 1979-8-2 12710 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  JEPS70296  Navarretia divaricata Joseph P. Tracy 1930-7-23 9119 Humboldt Horse Mountain Northern Coast Ranges 1432 Comment
  JEPS70338  Navarretia intertexta Lincoln Constance 1934-5-27 697 Humboldt s end Dyerville Bridge (South Fork Eel River); , Bull Creek Region 45 Comment
  UC1222711  Navarretia tagetina Joseph P. Tracy 1950-6-15 18826 Humboldt near (on ne side) Huestis Rock; Mail Ridge Comment
  JEPS70491  Navarretia tagetina Joseph P. Tracy 1916-6-19 4709 Humboldt Forks of Dobbyn Creek Northern Coast Ranges 182 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
  UC169009  Nemophila heterophylla Mrs. M. H. Manning Mar. 1902 Humboldt Hupa Comment
  CHSC97984  Nemophila menziesii var. atomaria Andrew Byers; Stuart E Richardson III 2005-6-10 9 Humboldt 7.4 mi south of Hwy 299 on NF1. Coldspring Camp. 1357 Comment
  UC24261  Nemophila menziesii var. atomaria Mrs. Manning Humboldt Hupa Comment
  UC203959  Nemophila menziesii var. atomaria Joseph P. Tracy 1918-4-7 4867 Humboldt Moonstone Beach Northern Coast Ranges, Little River, Moonstone Beach (mouth of Little River, grassy slopes facing ocean) 15 Comment
  HSC74643  Noccaea fendleri subsp. glauca M. A. Baker 1980-5-18 1365 Humboldt Near Black Mtn. 792 Comment
  RSA178545  Oemleria cerasiformis Joseph P. Tracy 1950-4-20 18618 Humboldt Buck Mountain, lower foothills of its northwest slope. 2 miles west of Dinsmore's. 762 Comment
  UC1128079  Oemleria cerasiformis P. L. Johannsen 1933-5-17 76 Humboldt Limestairs; Trinity National Forest, China Flat Quad. 182 Comment
  HSC39449  Oenanthe sarmentosa Linda M. Barker 1976-8-24 1686 Humboldt 3 mi. W of Arcata Comment
  UCD81683  Oenanthe sarmentosa Chuck Hughes 2009-6-18 102 Humboldt Near Arcata. NE corner of intersection of Old Samoa Road and Pacheco Road. 1 Comment
  HSC21578  Oenanthe sarmentosa B. R. Templeton 1962-5-10 Humboldt Diagonal road from Humboldt State campus to 13th St., Arcata Comment
  UC203546  Oenothera wolfii Joseph P. Tracy 1918-7-1 4968 Humboldt moist bluff Northern Coast Ranges, Cape Mendocino (three mi s of point of cape) 3 Comment
  HSC58094  Oreostemma alpigenum var. andersonii G. L. Clifton, Griswold 1979-8-1 12010 Humboldt Near N Trinity Mtn., close to the town of Hoopa 1799 Comment
  RSA0070495  Orobanche californica subsp. californica Edward Lee 1934-8-17 1152 Humboldt East shore of Big Lagoon, 35 miles north of Eureka. 3 Comment
  HSC54586  Orthilia secunda Overton, Butler 1979-7-24 9645 Humboldt Near Friday Camp, close to the town of Willow Creek. 1250 Comment
  RSA0006077  Orthocarpus castillejoides var. humboldtiensis Philip A. Munz 1925-6-20 9890 Humboldt Eureka. Comment
  HSC100676  Orthocarpus faucibarbatus Carl C. Marshall Apr 1886 170 Humboldt Fields near bay. Comment
  HSC56205  Orthocarpus imbricatus G. L. Clifton, Terry Griswold 1979-8-2 12197 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  POM210218  Orthocarpus lithospermoides S. T. Parks, Joseph P. Tracy 1930-5-25 796 Humboldt Vicinity of Bridgeville, Laribee Valley. Comment
  UC1197132  Osmorhiza occidentalis Joseph P. Tracy 1932-7-11 10420 Humboldt Corral Prairie Trinity Summit 1584 Comment
  HSC16717  Oxalis articulata subsp. rubra William J. Ferlatte 1963-4-27 23 Humboldt Waste place near 11th and B street, in Arcata. 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
  HSC70969  Oxalis oregana R. York 1980-5-17 545 Humboldt Near Le Perron Creek. 415 Comment
  UC1197419  Oxalis oregana Joseph P. Tracy 1906-5-6 2440 Humboldt near Hydesville; Northern Coast Ranges 60 Comment
  UCR179287  Oxalis oregana R. G. Swinney 1968-3-8 216 Humboldt Arcata 152 Comment
  UC170010  Oxalis oregana Harley P. Chandler 1901-6-30 1188 Humboldt Eureka North Coast Ranges, Humboldt Bay 30 Comment
  UC275338  Oxalis trilliifolia Joseph P. Tracy 1923-6-24 6362 Humboldt near High Prairie; Northern Coast Ranges, Bald Mountain 1066 Comment
  UC1254537  Panicum acuminatum var. acuminatum R. Spellenberg 1966-9-8 1630 Humboldt 5 mi s Garberville (bank of South Fork Eel River at Hwy 101); bank of S Fk Eel River Comment
  POM366049  Panicum oligosanthes var. scribnerianum Henry M. Pollard 1947-8-30 s.n. Humboldt Near Wilson Creek, on Klamath River, (near Orleans) Comment
  UC526843  Panicum oligosanthes var. scribnerianum Joseph P. Tracy 1931-5-17 9428 Humboldt Trinity River Valley at Willow Creek; Northern Coast Ranges, Trinity River Valley, Willow Creek 152 Comment
  UC1103480  Parapholis incurva Joseph P. Tracy 1936-6-6 14860 Humboldt Eureka; Eureka, on bay shore 3 Comment
  UC594151  Parapholis incurva S. K. Harris, J. P. Tracy 1936-6-6 3218 Humboldt Eureka, near railroad station Comment
  UC1222446  Parentucellia viscosa H. E. Parks and Joseph P. Tracy 1932-8-13 10348 Humboldt vicinity Trinidad; Northern Coast Region 60 Comment
  UC642347  Pastinaca sativa Joseph P. Tracy 1937-10-31 15694 Humboldt Rio Dell 30 Comment
  HSC39934  Paxistima myrsinites J. O. Sawyer 1970-6-25 2291 Humboldt 1646 Comment
  HSC75415  Paxistima myrsinites J. O. Sawyer, M. A. Ericksen 1980-7-18 3645 Humboldt Along FS Rd. 10N02, S of Middle Fork of Mill Creek Comment
  HSC70692  Pellaea brachyptera Gail Newton 1980-7-15 1565 Humboldt Near Sims Mtn. 1311 Comment
  HSC72695  Pellaea brachyptera Gail Newton 1980-6-24 595 Humboldt Near Ladder Rock 1570 Comment
  UC1198048  Penstemon anguineus Doris Kildale Aug. 1925 Humboldt Trinity Summit Comment
  NY604545  Penstemon laetus var. sagittatus F. W. Pennell 1940-7-7 26094 Humboldt Grouse Mountain, west of Salyer 1463.0 Comment
  JEPS5715  Penstemon newberryi var. berryi Chestnut and Drew 1888-7-21 Humboldt South Fork Mountain Comment
  HSC56057  Penstemon procerus var. brachyanthus G. L. Clifton, Terry Griswold 1979-7-31 11687 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1805 Comment
  HSC44827  Penstemon purpusii Thomas W. Nelson, Jane Nelson 1977-7-4 3600 Humboldt Along old trail above Alder Springs 1555 Comment
  SEINET5329314 Image available Penstemon rattanii J. Tracy 1906-6-10 2480 Humboldt Kneeland Prairie 762 Comment
  HSC1077  Pentagramma triangularis D. E. Anderson 1965-11-21 4170 Humboldt 3-4 mi. S of Weitchpec along rd. to Hoopa Comment
  SD112992  Perideridia howellii Darley F. Howe 1961-8-2 3125 Humboldt 24 miles east of Orick on Bald Mt. road. 915 Comment
  HSC98551  Perideridia howellii Cara Witte 2007-8-1 613 Humboldt White Oak Opening. Along Kinsey Ridge. 1257 Comment
  HSC32529  Perideridia kelloggii Thomas W. Nelson 1973-9-3 1133 Humboldt McKeown Ranch N of Dinsmore Comment
  HSC75289  Perideridia kelloggii J. O. Sawyer, M. A. Ericksen 1980-8-18 4061 Humboldt Slopes below Mill Creek Lakes, N Trinity Mtn. Research Natural Area 1707 Comment
  HSC45468  Persicaria wallichii Thomas W. Nelson, M. Alcasas 1978-10-10 4555 Humboldt Off Hwy. 101 right-of-way N of HSU exit Comment
  HSC97674  Petasites frigidus var. palmatus Gordon Leppig 1998-3-9 711 Humboldt Arcata, West End Rd., 3 mi. W of Ericson Way 30 Comment
  RSA183572  Petasites palmatus R. I. Bonn 1965-3-5 4 Humboldt 4 miles west of Arcata on Samoa Road. Comment
  RSA34328  Petasites palmatus J. Wendell Howe 1932-3-20 s.n. Humboldt Roadside near Orick. Comment
Read comments
Nov 24 2011
  JEPS1436  Phacelia bolanderi Joseph P. Tracy 1916-5-31 4704 Humboldt Stitz Creek Bluff Northern Coast Ranges, Eel River 60 Comment
  OBI77760  Phacelia bolanderi Rimo Bacigalupi, G. T. Robbins 1954-6-28 4657 Humboldt Trinity River, 2 mi N of Hoopa, Hoopa Valley Indian reservation 91 Comment
  CHSC32894  Phacelia californica James P. Smith 1973-5-26 6871 Humboldt Scotia Bluffs along the Eel River near Rio Dell. Comment
  HSC41588  Phacelia corymbosa Thomas W. Nelson, Jane P. Nelson 1977-7-4 3576 Humboldt Head of N Fork of Conley Creek 1463 Comment
  UCD120520  Phacelia heterophylla subsp. virgata Alice Eastwood; John Thomas Howell 1937-6-23 4757 Humboldt Dinsmore's. Comment
  CDA20501  Phalaris arundinacea P. Haggard 2004-7-8 PDR 1285917 Humboldt North Coast; Alder Grove Park near pond. 0 Comment
  RSA245301  Phalaris californica D. E. Anderson 1970-6-14 5125 Humboldt near Maple Creek School about 2 miles southeast of junction of Maple Creek Rd. and Butler Valley Rd. Comment
  UCD88768  Phalaris californica Joseph P. Tracy 1951-6-26 19599 Humboldt Butter Valley Road, about 2 miles E of junction of Kneeland Prairie Road. Comment
  UCD89189  Phalaris minor A. H. Murphy 1951-6-6 s.n. Humboldt W Roscoe at Upper Mattole. Comment
  CAS-BOT-BC76562  Philadelphus lewisii L. R. Abrams 1918-6-16 7197 Humboldt Willow Creek Comment
  CAS-BOT-BC76573  Philadelphus lewisii Alice Eastwood 1921-7-21 10655 Humboldt Carlotta Comment
  JEPS49596  Philadelphus lewisii W. L. Jepson 1902-7-29 2124 Humboldt Hupa Valley; along streams 243 Comment
  UC492217  Philadelphus lewisii Joseph P. Tracy 1929-7-27 8646 Humboldt Fieldbrook Northern Coast Ranges 60 Comment
  HSC20264  Philadelphus lewisii H. D. Sumner 1959-7-13 Humboldt Dirt road to Hoopa 305 Comment
  RSA0046937  Philadelphus lewisii Doris K. Kildale 1927-7-2 3661 Humboldt Redwood Creek at Berry s. Comment
  HSC58632  Phleum pratense Gilbert Muth 1979-7-31 11490 Humboldt Near Tish Tang A Tang Creek, S Fork, close to the town of Gasquet 1417 Comment
  UC34068  Phleum pratense J. P. Tracy 1900-7-12 896 Humboldt immediate vicinity Eureka 0 Comment
  CAS-BOT-BC250882  Phleum pratense Doris K. Kildale 1925-8-21 1309 Humboldt Head of Yager Creek 914 Comment
  HSC17182  Phlox adsurgens D. E. Anderson 1965-5-15 3693 Humboldt About 7 mi. N of Hoopa on Bloody Camp Prairie Rd. Comment
  RSA122919  Phlox adsurgens H. S. Yates 1936-6-22 5849 Humboldt 4 miles northeast of Bald Mountain Comment
  UC23903  Phlox adsurgens Harley P. Chandler Jun 1901 1534 Humboldt Klamath River North Coars Ranges 426 Comment
  HSC17159  Phlox diffusa D. E. Anderson 1965-4-24 3529 Humboldt Horse Mtn. 1524 Comment
  UC908605  Phlox gracilis Joseph P. Tracy 1932-7-10 10380 Humboldt Corral Prairie Trinity Summit 1584 Comment
  CAS-BOT-BC60608  Phoenicaulis cheiranthoides Thomas W. Nelson; James L. Nelson 1980-6-10 s.n. Humboldt Along Swayback Ridge 4-wheel drive road ca. 2.5 miles north of junction with Forest Service Road 1S07. 1463 Comment
  HSC36216  Phoradendron serotinum subsp. tomentosum John Rehling 1975-11-8 109 Humboldt Near Berry Summit, just off Hwy. 299 Comment
  CAS-BOT-BC451997  Phyllospadix scouleri Robert F. Thorne 1957-9-3 19016 Humboldt At Abalone Point, Patrick's Point State Park Comment
  SEINET3290582 Image available Phyllospadix torreyi Joseph P. Tracy 1938-9-9 16146 Humboldt Trinidad Comment
  CAS-BOT-BC73440  Picea sitchensis Edward Lee 1934-8-17 1154 Humboldt Near east shore of Big Lagoon, 35 miles north of Euraka. Comment
  CAS-BOT-BC73441  Picea sitchensis William R. Dudley 1899-6-28 s.n. Humboldt Humboldt Bay peninsula opposite Eureka. Comment
  CAS-BOT-BC78199  Picea sitchensis L. R. Abrams 1922-6-25 8247 Humboldt near South Bay Comment
  CHSC67760  Picea sitchensis Vernon H. Oswald 1997-1-29 8304 Humboldt Mad River County Park NW of Arcata, S of the mouth of Mad River. Comment
  UC1198275  Picea sitchensis Joseph P. Tracy 1930-9-28 9197 Humboldt Big Lagoon Northern Coast Region, Big Lagoon 6 Comment
  CAS-BOT-BC73113  Pinus lambertiana Doris K. Kildale 1926-9-5 2611 Humboldt Lassecks Peaks, Goat Camp 1661 Comment
  RSA46880  Pinus lambertiana Doris K. Kildale 1926-9-5 2611 Humboldt Lassecks Peaks. 1570 Comment
  HSC55094  Pinus monticola G. L. Clifton, Griswold 1979-7-31 11797 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa. 1845 Comment
  RSA46657  Pinus monticola Doris K. Kildale 1937-8-12 15086 Humboldt South Fork Mountain. Comment
  UC1196420  Piperia elongata Joseph P. Tracy 1948-8-22 18100 Humboldt 5 mi e Carlotta (by old Strong's District School House) 60 Comment
  CDA13740  Piperia transversa G. F. Hrusa, D. Willis non T. D. Wilfred 1997-8-19 14089 Humboldt Trinity Mountains; above Van Duzen River on N side of Hwy 36 at Humboldt Co. MP 21.7, W of Bridgeville. Comment
Read comments
Dec 20 2007
  UC1239609  Plagiobothrys reticulatus Joseph P. Tracy 1936-6-9 14884 Humboldt Bear River Ridge Northern Coast Ranges, Bear River Ridge 609 Comment
  UC582615  Plagiobothrys reticulatus Joseph P. Tracy 1937-6-20 15335 Humboldt ten mi up stream from mouth Bear River 152 Comment
  SEINET10456365  Plagiobothrys reticulatus Harold E. Parks Parks 24042 Humboldt Spruce Cove. 64 Comment
  JEPS60998  Plagiobothrys reticulatus var. reticulatus Joseph P. Tracy 1937-6-20 15335 Humboldt ten mi up stream from mouth; Bear River 152 Comment
  JEPS60967  Plagiobothrys reticulatus var. reticulatus Joseph P. Tracy 1921-6-12 5825 Humboldt Butter Valley Northern Coast Ranges 152 Comment
  JEPS60976  Plagiobothrys reticulatus var. reticulatus Joseph P. Tracy 1914-5-30 4486 Humboldt Hydesville 60 Comment
  UC1222196  Plagiobothrys trachycarpus Joseph P. Tracy 1948-5-31 17987 Humboldt Robertson's Ranch halfway between Garberville and Harris; Robertson's Ranch 609 Comment
  JEPS14283  Plantago erecta Joseph P. Tracy 1905-4-30 2174 Humboldt Fairhaven Northern Coast Region, Humboldt Bay, Ocean Beach Comment
  OBI11640  Plantago lanceolata Joseph P. Tracy 1947-8-10 17882 Humboldt Eureka Comment
  HSC12426  Plantago lanceolata Gary J. Stebbins 1970-5-10 76 Humboldt Along Fickle Hill Rd., 2.4 mi. E of Arcata Comment
  HSC62684  Plantago lanceolata Michelle Stevens 1979-4-21 58 Humboldt Ponds across from Clam Beach 0 Comment
  HSC16848  Plantago major Paul Shields Jun 1955 Humboldt 1 mi. N of Weott Comment
  SJSU11079  Plantago maritima H. T. Harvey 1977-7-6 608 Humboldt S Spit, Humboldt Bay Comment
  HSC16832  Plantago subnuda Norman H. Moe 1962-5-17 Humboldt Lanphere's Place, next to Mad River Slough Comment
  UCR111732  Plantago subnuda R. York 1977-11-25 65 Humboldt North Coast, margin of ditch along Hwy 101 between Eureka and Arcata, corner of Indianola Rd. and Hwy 101 1 Comment
  HSC27463  Platanthera dilatata var. leucostachys J. D. Ackerman, A. Montalvo 1973-6-30 90 Humboldt Big Lagoon State Park, 8 mi. N of Trinidad 0 Comment
  HSC26332  Platystemon californicus Thomas W. Nelson 1971-4-4 369 Humboldt Along the Samoa Peninsula adjacent to the Coast Gaurd Station Comment
  UC176997  Plectritis brachystemon Joseph P. Tracy 1912-6-9 3656 Humboldt Northern Coast Region, Alton Alton; Northern Coast Region, Alton 30 Comment
  UC1239576  Plectritis congesta Joseph P. Tracy 1922-4-30 6018 Humboldt near Willow Creek (Northern Coast Ranges, Trinity River Valley); Northern Coast Ranges, Trinity River Valley 152 Comment
  UC416757  Plectritis congesta Mrs. M. H. Manning Apr 1902 Humboldt near Hupa Comment
  HSC21692  Plectritis congesta subsp. congesta J. R. Kahl 1962-4-26 19 Humboldt 1 mi. N of Samoa, 1000 yards from ocean. Comment
  HSC96284  Plectritis congesta subsp. congesta J. Breton, A. Livingston 2005-6-8 5 Humboldt 2.0 mi. S of Hwy. 299 on Titlow Rd. 1032 Comment
  HSC48728  Pleuricospora fimbriolata J. Pageau, T. Jimerson, W. Wisler, A. Regalis 1979-6-13 524 Humboldt Off FS 10N05. SE slope of Hopkins Butte. Bulk Collection 186 1037 Comment
  HSC70751  Pleuricospora fimbriolata R. York 1980-5-17 532 Humboldt Near Le Perron Peak 1066 Comment
  HSC76591  Pleuricospora fimbriolata Teresa Prendusi 1981-7-7 140 Humboldt Near Slate Creek Butte. 1158 Comment
  CAS-BOT-BC458164  Pleuricospora fimbriolata Doris K. Kildale 1927-8-7 3858 Humboldt Lawrence Creek 609 Comment
  RSA183537  Pleuropogon refractus H. S. Logsdon 1964-5-10 12 Humboldt 4 miles NE of Orick at Boye's Prairie Comment
  UC1103799  Pleuropogon refractus Joseph P. Tracy 1936-8-7 15093 Humboldt head of Little Hors-Linto Creek (Trinity Summit); , Little Hors-Linto Creek 1371 Comment
  HSC10618  Poa annua R. H. Berg 1963-3-1 5 Humboldt Arcata, Fickle Hill area. Comment
  SEINET255064 Image available Poa annua J. P. Tracy 1914-7-5 4548 Humboldt Bald Mtn between High Prairie and Snow Camp Comment
  UC1103791  Poa bolanderi Joseph P. Tracy 1935-7-28 14334 Humboldt head of Brett Hole Trinity Summit 1828 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
  UC1103189  Poa bulbosa Joseph P. Tracy 1938-7-4 15988 Humboldt Valley of S Yager Creek 762 Comment
  HSC10679  Poa confinis L. M. Malloy 1965-4-23 46 Humboldt Samoa, sand dunes 1/4 mi. NW of the corner of Thunder Rd. and The Hard Way. Comment
  HSC10688  Poa confinis D. B. Bader 1963-4-15 23 Humboldt Second of the Clam Beach Lagoons, W of Hwy. 101 Comment
  SEINET10822289  Poa confinis Joseph P. Tracy 1905-4-30 Tracy 278 Humboldt Sand dunes of Ocean Beach. Comment
  HSC10705  Poa douglasii S. J. Moore 1965-5-9 48 Humboldt Dry Lagoon State Park, near entrance. Comment
  UC34126  Poa howellii Joseph Burtt Davy Jun 8 1899-Jun 1 1901 5360 Humboldt Harris Comment
  CAS-BOT-BC255849  Poa kelloggii Joseph P. Tracy 1906-5-20 2463 Humboldt Near Eureka, region about Humboldt Bay 152 Comment
  SEINET10660267  Poa kelloggii Harley P. Chandler Chandler 1183 Humboldt North Coast Ranges, California. 30 Comment
  OBI22137  Poa macrantha Carl B. Wolf 1937-6-18 8904 Humboldt Centerville Beach Comment
  POM204873  Poa macrantha Joseph P. Tracy 1900-7-4 886 Humboldt Sand Hills of Ocean Beach at Samoa, opp. Eureka Comment
  UC60226  Poa pratensis subsp. pratensis Joseph Burtt Davy and Walter C. Blasdale 1899-6-11 5432 Humboldt near Hubbards Comment
  RSA129472  Poa trivialis H. L. Person 1932-5-11 s.n. Humboldt Near Arcata 0 Comment
  UC249871  Poa trivialis Joseph P. Tracy 1923-5-30 6245 Humboldt Salmon Creek Corners; Northern Coast Ranges, Humboldt Bay 6 Comment
  HSC17474  Polygonum aviculare C. B. Wolf 1927-8-29 1208 Humboldt Devil's Gate, S of Cape Mendocino. Comment
  HSC38370  Polygonum aviculare Peter Sorensen 1976-8-8 Humboldt King Salmon Comment
  UC55943  Polygonum aviculare subsp. aviculare J. P. Tracy 1901-7-28 1219 Humboldt Immediate vicinity of Eureka 0 Comment
  UC1198074  Polygonum bistortoides Joseph P. Tracy 1919-9-18 5242 Humboldt Trinity Summit Northern Coast Ranges 1828 Comment
  JEPS79956  Polygonum bolanderi Joseph P. Tracy 1921-8-21 5944 Humboldt near Willow Creek; Northern Coast Ranges, Trinity River Valley 152 Comment
  UC30051  Polygonum convolvulus Chesnut and Drew 1888-7-28 Humboldt Grouse Creek Comment
  UC672935  Polygonum douglasii Joseph P. Tracy 1932-8-21 10366 Humboldt Three Cabins North Coast Ranges, Chararral Mountain (w foothills of mt.) 457 Comment
  POM312530  Polygonum lapathifolium S. Galen Smith, Malcolm A. Nobs 1949-8-9 1232 Humboldt Marshy pond on Southern side of the town of Blue Lake Comment
  HSC17517  Polygonum paronychia J. R. Kahl 1962-4-26 18 Humboldt 1 mi. N of Samoa, 1000 yards from ocean. Comment
  CAS-BOT-BC109184  Polygonum paronychia E. A. McGregor 1921-8-25 s.n. Humboldt Requa and vicinity. Sand bar extending southward from mouth of Klamath River. Comment
  UC672941  Polygonum persicaria Joseph P. Tracy 1927-10-8 8387 Humboldt Prairie Creek Boyes Ranch 91 Comment
  UC672933  Polygonum polystachyum Joseph P. Tracy 1940-10-18 16775 Humboldt Eureka 30 Comment
  UC1198077  Polygonum sachalinense Joseph P. Tracy 1942-9-20 17319 Humboldt along hwy near mouth of Elk River 6 Comment
  RSA53825  Polygonum spergulariiforme H. M. Pollard 1945-8-25 s.n. Humboldt Between Orleans and Camp Creek, Klamath River Canyon. Comment
  HSC70409  Polypodium californicum M. A. Baker 1980-6-7 1832 Humboldt Near Ammon Creek 732 Comment
  HSC1101  Polypodium californicum Paul Shields Apr 1955 Humboldt 5 mi. N of Arcata Comment
  RSA46700  Polypodium californicum Doris K. Kildale 1928-2-19 4262 Humboldt Little River near Trindad Comment
  HSC1108  Polypodium glycyrrhiza T. W. Beck 1963-3-10 11 Humboldt Camp Bauer, Korbel Comment
  HSC1111  Polypodium glycyrrhiza Gene S. Van Horn 1962-1-6 7 Humboldt 9 mi. E of Yager Cr. bridge in Carlotta, on Hwy. 36 between highway and Van Duzen river 152 Comment
  HSC1131  Polypodium scouleri R. E. Hafenfeld 1965-5-9 62 Humboldt 0.25 mi. N Squashan Cr. on Gold Bluff Beach Rd. Comment
  JEPS82390  Polypogon interruptus A. S. Hitchcock 1915-7-13 839 Humboldt Eureka Comment
  UC183480  Polypogon interruptus Joseph P. Tracy 1912-7-26 3834 Humboldt Kneeland Prairie; Northern Coast Ranges, Kneeland Prairie 762 Comment
  CAS-BOT-BC233215  Polypogon maritimus Joseph P. Tracy 1930-10-19 9236 Humboldt Eel River, Alton to Fortuna 15 Comment
  UC204533  Polypogon maritimus Joseph P. Tracy 1918-7-1 4967 Humboldt along Eel River from South Fork to Scotia Holmes Flat; Northern Coast Ranges, along Eel River 60 Comment
  CHSC10130  Polypogon monspeliensis Jerry Parker 1968-11-22 241 .1 Humboldt Mckinleyville beach, floor of vernal pond. Comment
  HSC45224  Polypogon monspeliensis M. Alcasas 1978-5-27 106 Humboldt On access road to Eel River Sawmills, 0.5 mi. from Hwy. 101 30 Comment
  SEINET200577 Image available Polypogon monspeliensis Joseph P. Tracy 1916-5-31 4692 Humboldt Holmes Flat along Eel River from South Fork to Scotia. 61 Comment
  UC1440056  Polystichum californicum Danin & H. G. Baker 1960-8-13 604 Humboldt ca. 2 mi n Dyerville (High Rock (w side of Eel River), along Ave. of Giants) Comment
  HSC1156  Polystichum imbricans D. E. Anderson 1963-9-21 2832 Humboldt 0.5 mi. E of Willow Creek Comment
  HSC73537  Polystichum imbricans Gail Newton 1980-7-14 1498 Humboldt Near Last Chance Ridge. 1219 Comment
  HSC47991  Polystichum imbricans Brad Klipfel 1974-6-17 681 Humboldt Horse Mtn. Comment
  UC338401  Polystichum imbricans subsp. imbricans unknown 1904-7-13 Humboldt along stage rd Comment
  HSC76300  Polystichum munitum Alerie Gizinski 1981-8-20 304 Humboldt Near Buck Mtn. 975 Comment
  SBBG296  Polystichum munitum H. and M. Dearing 1939-5-27 3454 Humboldt Bishop Pine Lodge, Patricks Pt Comment
  HSC66076  Polystichum scopulinum M. S. Taylor, J. D. Jokerst, L. Ahart 1980-2-8 3214 Humboldt Humboldt Peak, N outcrop on the top 2155 Comment
  HSC98080  Polystichum scopulinum Cara Witte 2007-7-10 469 Humboldt Horse Mountain Botanical Area. Forest Servie Road 6N38 1349 Comment
  UC249539  Populus trichocarpa Joseph P. Tracy 1922-10-8 6125 Humboldt Mad River at Blue Lake; Northern Coast Ranges, Mad River at Blue Lake 30 Comment
  UC672879  Potamogeton foliosus Joseph P. Tracy 1934-8-14 13567 Humboldt Eel River, Alton to Fortuna Eel River 15 Comment
  CAS-BOT-BC453765  Potamogeton natans L. R. Abrams 1916-7-18 6094 Humboldt Arcata to Trinidad Comment
  HSC45347  Potamogeton natans R. York 1978-4-8 125 Humboldt Between Arcata and Eureka along Hwy. 101 0 Comment
  UC1099846  Potamogeton natans Malcolm A. Nobs, S. Galen Smith 1949-8-9 1229 Humboldt 1 mi n of Arcata (at junction of Highways 101 and 299); Mad River Valley Comment
  UC1099897  Potamogeton pusillus var. pusillus Malcolm A. Nobs, S. Galen Smith 1949-8-3 1162 Humboldt 1 mi s of Fields Landing; Eel River Valley Comment
  HSC90260  Potentilla anserina subsp. pacifica Jean Hanson 1980-5-24 71 Humboldt Indian (Gunther) Island, Humboldt Bay, city of Eureka. W end of island Comment
  HSC56414  Potentilla gracilis var. fastigiata Griswold, Butler 1979-7-11 7064 Humboldt Near Twin Lakes, close to the town of Willow Creek 1417 Comment
  HSC58182  Potentilla gracilis var. fastigiata G. L. Clifton, Griswold 1979-8-2 12270 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  CAS-BOT-BC540159  Potentilla gracilis var. fastigiata Carl B. Wolf 1934-7-2 5859 Humboldt 5.5 mi. from Bald Mt. on road to Snow Camp. 914 Comment
  HSC79489  Prosartes hookeri Kenneth Clark 1980-3-24 539 Humboldt Upper terrace of Dead Man's Gulch 76 Comment
  SEINET12054299  Prosartes smithii Unknown 1936-1 13353 Humboldt near Scotia Comment
  CDA5736  Prunella vulgaris T. C. Fuller 1958-6-17 596 -58 Humboldt Wildcat Ridge near Bunker Hill. 0 Comment
  UC902030  Prunella vulgaris var. lanceolata Joseph P. Tracy 1949-8-4 18421 Humboldt Mud Springs Trinity Summit; , Mud Springs 1341 Comment
  UC1402061  Prunella vulgaris var. lanceolata Andrew P. Nelson 1960-7-18 622 -30 Humboldt Comment
  CAS-BOT-BC159988  Prunus emarginata Harley P. Chandler 1901-6-1 1273 Humboldt Hupa Indian Reservation 1066 Comment
  HSC38513  Prunus emarginata D. E. Anderson, J. P. Smith 1971-6-18 1087 Humboldt Horse Mtn. Comment
  RSA254750  Prunus emarginata D. E. Anderson 1972-6-13 5572 Humboldt Westward lower slopes of Black Lassic near Trinity County line. 1585 Comment
  UC1198778  Prunus subcordata Joseph P. Tracy 1924-10-5 6911 Humboldt Trinity River Valley near the South Fork; Northern Coast Ranges, Trinity River Valley 182 Comment
  RSA46729  Prunus virginiana var. melanocarpa Doris K. Kildale 1937-8-10 15351 Humboldt High Divide Comment
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May 5 2014
  HSC29945  Pseudostellaria jamesiana D. H. Norris, J. Van Horn, D. E. Jackson 1973-6-19 193 Humboldt Humboldt National Forest, Santa Rosa Mtn. Range, Buffalo Canyon 1524 Comment
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Apr 11 2012
  CAS-BOT-BC80118  Pseudotsuga menziesii Doris K. Kildale 1928-7-1 5664 Humboldt Klamath River at mouth of Bluff Creek Comment
  UC169084  Psilocarphus oregonus Joseph P. Tracy 1912-7-30 3890 Humboldt opposite Buck Mountain; Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  UC198649  Psilocarphus tenellus Joseph P. Tracy 1917-5-27 4783 Humboldt Eureka Northern Coast Ranges 0 Comment
  UC1222912  Psilocarphus tenellus Joseph P. Tracy 1942-7-26 17293 Humboldt 1.0 mi n Redwood House (at an old millsite); Valley of South Yager Creek 609 Comment
  HSC99408  Pteridium aquilinum var. pubescens K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-6-28 57 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  HSC90883  Puccinellia nutkaensis Leonel Arguello 1989-6-24 Humboldt Lanphere-Christensen Dunes Preserve, 3 mi. W of Arcata; 30 yards from Salt Marsh Trail. Comment
  UCSC000066  Puccinellia nutkaensis H. S. Yates 1936-6-16 5669 Humboldt 1 mile N.E. of Samoa - Eureka 0 Comment
  RSA43879  Pycnanthemum californicum H. M. Pollard 1947-8-28 s.n. Humboldt Near old placer mine, north of Forest Service Station, Orleans. Comment
  CHSC104064  Pyracantha angustifolia Peter F. Zika 2009-6-15 24493 Humboldt North Coast Ranges. Route 299, 0.2 km W of Davis Street, near town of Blue Lake. 80 Comment
  UC562457  Pyrola asarifolia Joseph P. Tracy 1936-6-28 15016 Humboldt Bald Mountain at Lake Prairie 1066 Comment
  HSC72629  Pyrola dentata J. P. Smith 1977-7-3 9254 Humboldt Six Rivers National Forest, along FS Rd. 11N17, above Blue Lake 762 Comment
  HSC99518  Pyrola picta K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-22 181 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  CAS-BOT-BC466037  Pyrola picta L. B. Kildale 1930-9-9 10404 Humboldt Bald Mountain 914 Comment
  CAS-BOT-BC105160  Quercus kelloggii H. E. McMinn 1922-8-5 330 Humboldt Mad River Comment
  CAS-BOT-BC105170  Quercus kelloggii Roxana S. Ferris 1955-7-11 12974 Humboldt Summit of US Highway 299 betw. Willow Creek and Blue Lake Comment
  HSC8259  Quercus kelloggii D. E. Anderson 1961-9-30 1835 Humboldt Comment
  UCD165090  Quercus parvula var. shrevei Lois W. Weeth; Kerry Heise and John M. Tucker 2003-10-21 s.n. Humboldt 24.5 mi. from Garberville along Alderpoint Rd. 174 Comment
  JEPS37674  Quercus sadleriana W. L. Jepson Jul 16 1902-Jul 23 1902 2033 Humboldt just below Trinity Summit 2133 Comment
  UCD47220  Quercus sadleriana Milo S. Baker 1947-8-10 11896 Humboldt 16 mi. N.E. of Hoopa along trail to Trinity Summit from end of forest Rd. 1463 Comment
  HSC99036  Quercus vacciniifolia Cara Witte 2008-9-27 1047 Humboldt Horse Mountain Botanical Area. Forest Service Road 6N18. At end of the road. 1407 Comment
  SEINET3130963  Quercus vacciniifolia Unknown 1948-9-3 1851 Humboldt Horse Mountain, at junction of roads to Grouse Mountain and to Horse Mountain Mine, Six Rivers National Forest 1463 Comment
  UCD14015  Quercus vacciniifolia John M. Tucker 1948-9-3 1851 Humboldt California, Humbolt Co.; Horse Mountain, at junction of roads to Grouse Mountain and to Horse Mountain Mine, Six Rivers National Forest; Comment
  UCD47445  Quercus vacciniifolia John M. Tucker 1948-9-3 1851 Humboldt California, Humbolt Co.; Horse Mountain, at junction of roads to Grouse Mountain and to Horse Mountain Mine, Six Rivers National Forest; Comment
  SEINET3825263 Image available Quercus wislizeni Joseph P. Tracy 1914-5-14 4458 Humboldt Fort Seward Comment
  CAS-BOT-BC186671  Ranunculus Mrs. H. C. Cantelow 1936-5-18 1388 Humboldt 8 mi. N. of Orick nr. Corkscrew Tree Comment
  UCD97349  Ranunculus K. Twitchell 1996-5-11 26 Humboldt Crannell. Coastal cliffs along old Highway 101 at Moonstone beach access. 36 Comment
  HSC56169  Ranunculus alismifolius var. hartwegii G. L. Clifton, Griswold 1979-8-1 12060 Humboldt Near N Trinity Mtn., close to the town of Hoopa. 1798 Comment
  UC162876  Ranunculus californicus J. P. Tracy 1901-5-30 1107 1/2 Humboldt Immediate Vicinity of Eureka 0 Comment
  JEPS55086  Ranunculus californicus Joseph P. Tracy 1916-4-30 4681 Humboldt Table Bluff Northern Coast Ranges, about Humboldt Bay 152 Comment
  SEINET13716687  Ranunculus californicus Unknown 1916-4-30 4681 Humboldt Around Humboldt Bay Comment
  HSC26468  Ranunculus californicus var. cuneatus T. O. Osborne 1970-4-8 7 Humboldt Sugarloaf Rock, Cape Mendocino 76 Comment
  HSC100619  Ranunculus hederaceus Carl C. Marshall Apr 1886 168 Humboldt Ditches etc. near bay. Comment
  HSC18155  Ranunculus muricatus S. J. Roberts 1965-4-25 32 Humboldt 0.25 mi. E of Lanphere's bridge across old Mad River channel Comment
  UC1196212  Ranunculus occidentalis J. P. Tracy 1901-5-5 1066 Humboldt Immediate vicinity of Eureka 0 Comment
  UC1196224  Ranunculus occidentalis Joseph P. Tracy 1920-5-18 5327 Humboldt 5 mi above Dyerville; Northern Coast Ranges, South Fork Eel River, Forest Lodge 60 Comment
  UC1196227  Ranunculus occidentalis Joseph P. Tracy 1921-4-24 5458 Humboldt slopes facing South Fork of Eel River; Northern Coast Ranges, Phillipsville 121 Comment
  UC1196235  Ranunculus occidentalis Joseph P. Tracy 1902-6-3 1671 Humboldt ridge between Harris and Fruitland; Northern Coast Ranges 762 Comment
  UCD96739  Ranunculus occidentalis Joseph M. DiTomaso 1976-3-28 360 Humboldt Highway 299, 3 miles east of Willow Creek. 609 Comment
  HSC102517  Ranunculus occidentalis var. occidentalis M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-28 1504 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1106 Comment
  HSC18171  Ranunculus occidentalis var. occidentalis Elrid H. Spinas 1948-5-15 11 Humboldt Horse Mtn. Comment
  UC1103014  Ranunculus parviflorus Joseph P. Tracy 1948-6-13 18033 Humboldt halfway between Bridgeville and Blocksburg (around a pool); Larrabee Creek 457 Comment
  UCR17461  Ranunculus repens R. S. Woglum 1938-8-29 2036 Humboldt North Coast, grounds of Trinidad State Park, south of Trinidad 38 Comment
  HSC39396  Ranunculus uncinatus var. parviflorus D. E. Anderson, J. P. Smith 1971-6-28 1249 Humboldt 2.5 mi. S of Blue Lake along the Mad River Comment
  HSC99407  Ranunculus uncinatus var. uncinatus K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-6-28 56 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  UC1222628  Rhamnus californica Joseph P. Tracy 1950-6-18 18848 Humboldt near Petrolia (hills between town and ocean) Comment
  UC668157  Rhamnus californica Joseph P. Tracy 1934-7-9 13358 Humboldt Dobbyn Creek 152 Comment
  RSA19036  Rhamnus californica subsp. occidentalis J. T. Howell 1937-7-31 13717 Humboldt 5 miles E of Berry Summit Comment
  HSC7835  Rhododendron columbianum J. F. Knezevich 1967-5-23 452 Humboldt N of Trinidad at Big Lagoon 15 Comment
  CAS-BOT-BC56615  Rhododendron macrophyllum Clarence R. Quick 1959-7-24 59 -24 Humboldt Bee Mt., ca. 12 miles southwest of Orleans Comment
  UC153962  Rhododendron macrophyllum Joseph P. Tracy 1906-6-10 2489 Humboldt Humboldt Bay Region, Kneeland Prairie Road Kneeland Prairie Road; Northern Coast Region, Humboldt Bay Region, Kneeland Prairie 609 Comment
  UC32620  Rhododendron macrophyllum Chesnut and Drew 1888-7-8 Humboldt near Arcata Comment
  UCR32089  Rhododendron occidentale David J. Keil 1983-7-2 17313 Humboldt c. 4 mi SE of SR 299 along Titlow Hill Rd below Horse Mountain Summit Road Comment
  HSC91896  Rhododendron occidentale var. paludosum E. Mackey 1987-5-19 Humboldt Patrick's Point State Park, on road to Palmer's Point Comment
  UC667065  Ribes binominatum Joseph P. Tracy 1933-7-11 12696 Humboldt Grouse Mountain 1524 Comment
  CAS-BOT-BC92878  Ribes bracteosum Joseph P. Tracy 1938-8-14 16105 Humboldt Willow Creek Canyon, along Trinity Highway. 762 Comment
  HSC56243  Ribes bracteosum Walter Overton 1979-8-1 12345 Humboldt Near Packsaddle Ridge, close to the town of Hoopa 1341 Comment
  HSC59630  Ribes bracteosum J. P. Smith 1971-10-9 5018 Humboldt Banks and flood plain of the Mad River above the fish hatchery. Comment
  BLMAR564  Ribes inerme Jennifer Wheeler 2010-3-29 564 Humboldt Headwaters Forest Reserve, along Elk River Trail within first mile, east side trail 42 Comment
  UC492206  Ribes inerme var. klamathense Joseph P. Tracy 1927-5-15 8039 Humboldt near The South Fork; Northern Coast Ranges, Trinity River Valley 182 Comment
  HSC103234  Ribes lacustre Jade Paget-Seekins 2010-6-26 29 Humboldt On Long Ridge Road, up Big Hill Road outside of Hoopa. 1274 Comment
  UC667070  Ribes lacustre Joseph P. Tracy 1933-7-16 12784 Humboldt near McKay Camp; South Fork Mountain 1676 Comment
  HSC103237  Ribes lobbii Jade Paget-Seekins 2010-6-22 22 Humboldt Horse Mountain. 10 miles up Titlow Hill Road, on Forest Route 1. 1591 Comment
  HSC99367  Ribes lobbii K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-6-24 16 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  UC11588  Ribes lobbii Harley P. Chandler June 1901 1278 Humboldt Hupa Indian Reservation North Coast Ranges 1097 Comment
  RSA0021132  Ribes lobbii Lincoln Constance, R. C. Rollins 1942-5-11 2864 Humboldt Near summit 8 miles east of Blue Lake. Comment
  HSC20315  Ribes menziesii D. E. Anderson 1962-3-17 1940 Humboldt 1.0 mi. SE of Korbel along rd. to Maple Creek Comment
  JEPS49220  Ribes menziesii Jos. P. Tracy 1921-3-13 5421 Humboldt near Alton (Drake's Hill) 30 Comment
  UC552231  Ribes menziesii Joseph P. Tracy 1933-5-20 12268 Humboldt near Petrolia; North Coast Ranges, Mattole Valley 15 Comment
  UCD102480  Ribes roezlii P. Zinke 1950-8-4 153 Humboldt 2 miles west of Harris Post Office. 853 Comment
  BLMAR226  Ribes roezlii var. amictum Jennifer Anthony-Wheeler 1996-7-11 226 Humboldt N.Dobbyn creek 1005 Comment
  HSC103225  Ribes roezlii var. cruentum Jade Paget-Seekins 2010-6-23 23 Humboldt Horse Mountain. Slightly less than 10 miles up Titlow Hill Road, on Forest Route 1. Near 'Road Narrows' sign. 1558 Comment
  HSC73148  Ribes sanguineum M. A. Baker 1980-5-18 1286 Humboldt Near Black Mtn. 1006 Comment
  CAS-BOT-BC144681  Ribes sanguineum var. glutinosum W. R. Dudley 1899-6-1 s.n. Humboldt Eureka Peninsula Comment
  BLMAR270  Ribes sanguineum var. sanguineum Jennifer Anthony-Wheeler 1999-7-30 270 Humboldt Lacks Creek, growing in Hupa mt quad 1219 Comment
  CAS-BOT-BC173990  Ribes viscosissimum J. H. Thomas 1949-6-13 913 Humboldt Along trail between Le Perron Flat and Whiteys Peak. Six Rivers National Forest. (East of town of Orleans) 1371 Comment
  CAS-BOT-BC222678  Romanzoffia tracyi Lincoln Constance; Alan A. Beetle; Joseph P. Tracy 1940-5-18 2619 Humboldt North of Trinidad 30 Comment
  RSA0003890  Romanzoffia tracyi H. E. Parks, J. P. Tracy 1933-5-9 11008 Humboldt Vicinity of Trinidad. 15 Comment
  UC1199219  Rorippa curvisiliqua Harold E. Parks and Joseph P. Tracy 1935-6-16 11275 Humboldt lower nw slopes Buck Mountain; lower nw slopes Buck Mountain 792 Comment
  RSA43862  Rorippa curvisiliqua H. M. Pollard 1948-7-23 s.n. Humboldt Reece Point near Orleans. Comment
  UC161585  Rorippa curvisiliqua Joseph P. Tracy 1909-6-13 2992 Humboldt Mad River at Blue Lake; Northern Coast Ranges, Mad River at Blue Lake 30 Comment
  CAS-BOT-BC146476  Rosa gymnocarpa Alice Eastwood; John Thomas Howell 1937-6-23 4798 Humboldt Near Dinsmores Comment
  CAS-BOT-BC146484  Rosa gymnocarpa Joseph P. Tracy 1936-8-7 15107 Humboldt Trinity Summit, 2 miles southeast of Devil's Hole 1584 Comment
  CAS-BOT-BC146496  Rosa gymnocarpa Doris K. Kildale 1927-7-3 3644 Humboldt Willow Creek Flat 152 Comment
  HSC99447  Rosa gymnocarpa K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-7 97 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  RSA166375  Rosa gymnocarpa Robert F. Thorne 1957-9-2 18999 Humboldt Burlington State Park, just S of Weott. Comment
  UC467683  Rosa gymnocarpa Mrs. M. H. Manning 1901-6-7 61 Humboldt Hupa Comment
  UC1927277  Rosa luciae Barbara Ertter with Tom Nelson and Dick Brummitt 2004-7-2 18404 Humboldt Eureka, at edge of 14th Street where road crosses large drainage (opposite 1404 14th St.) Comment
  CAS-BOT-BC146836  Rosa nutkana H. E. Parks; S. T. Parks 1937-5-1 5816 Humboldt Spruce Cove, Trinidad 60 Comment
  RSA201872  Rosa nutkana Geo. Parrish, G. Parrish 1930-5-21 s.n. Humboldt Trinidad. Comment
  CAS-BOT-BC146885  Rosa rubiginosa Carl B. Wolf 1927-8-30 1229 Humboldt 2 mi. s. of Petrolia on Matole River near point where road crosses river Comment
  RSA244511  Rubus discolor Larry E. DeBuhr, Gary D. Wallace 1973-9-16 s.n. Humboldt Near entrance of Prairie Creek Redwoods State Park Comment
  BLMAR469  Rubus leucodermis Jennifer Anthony-Wheeler 2004-11-8 469 Humboldt Titlow Hill, growing along Titlow Hill road off Hwy 300 914 Comment
  HSC102093  Rubus parviflorus M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 996 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  HSC97621  Rubus parviflorus Cara Witte 2007-6-5 212 Humboldt Near Grouse Mountain. Along Forest Service Road 4N32. Approximately 1 mile south of intersection with 5N04. 1434 Comment
  CHSC59811  Rubus spectabilis Jordan Detzer 1977-4-8 6 Humboldt South end of Patrick's Point State Park, ca 0.2 mi west of Hwy 101 and 5 mi north of Trinidad. 60 Comment
  HSC19686  Rubus spectabilis D. E. Anderson 1962-2-10 1914 Humboldt 1.0 mi. S of Big Lagoon school along abandoned stretch of Hwy. 101 Comment
  CAS-BOT-BC158792  Rubus ursinus Joseph P. Tracy 1946-8-25 17637 Humboldt Field's Landing, 2 miles above town. 6 Comment
  HSC96515  Rubus ursinus Gordon Leppig 1998-5-11 762 Humboldt Big Lagoon County Park. 3 Comment
  HSC79444  Rumex acetosella Kenneth Clark 1980-3-27 549 Humboldt Open areas and terraces above Dead Man's Gulch 107 Comment
  UCR45427  Rumex acetosella Kenneth Clark 1980-4-18 602 Humboldt North Coast, Shelter Cove, on access trail to Dead Man's Gulch 52 Comment
  HSC23129  Rumex acetosella Norman Dennis 1965-6-19 134 Humboldt 0.25 mi S and 1.0 mi. E of junction of Barry Ridge Rd. and Eureka-Bridgeville county rd., along Ashfield Ridge Rd., 5 mi. SE of Kneeland 793 Comment
  HSC73636  Rumex californicus M. A. Baker 1980-7-22 3128 Humboldt Near Grogan Hole. 1676 Comment
  UC672928  Rumex conglomeratus Joseph P. Tracy 1935-7-17 14097 Humboldt opposite mouth of Willow Creek; Trinity River Valley, Lack Pond 152 Comment
  CHSC31287  Rumex crispus Mark Stopher 1980-6-4 100 Humboldt In diked off upland habitat along Elk River near Hwy 101 bridge. 1 Comment
  HSC26348  Rumex crispus T. O. Osborne 1970-5-24 75 Humboldt Flat-iron Rock, 3/4 mi. NW Trinidad Lighthouse Comment
  HSC37577  Rumex crispus J. D. Ackerman 1975-6-10 452 Humboldt 1 mi. N of Samoa Bridge turnoff from Samoa Blvd. S of Manila Comment
  UC249658  Rumex maritimus Joseph P. Tracy 1921-8-7 5867 Humboldt Stone Lagoon Northern Coast Region 3 Comment
  HSC17616  Rumex obtusifolius Wm. F. Bowman 1968-11-20 Humboldt 4 mi. SE of Arcata, along Jacoby Creek Rd. Comment
  SEINET11946618  Rumex obtusifolius C. S. Kaut 2000-1 6 Humboldt Trinidad Comment
  UC153979  Rumex occidentalis Joseph P. Tracy 1910-6-5 3148 Humboldt near Samoa; Northern Coast Region, Humboldt Bay Region 0 Comment
  UC1100022  Ruppia maritima Malcolm A. Nobs and S. Galen Smith 1949-8-3 1182 Humboldt ca 4 mi s Eureka (on Highway 101, near mouth of Elk River) Comment
  SEINET10966379  Rytidosperma penicillatum Joseph P. Tracy 1942-6-28 Tracy 17267 Humboldt Hungry Hollow. on Bald Mountain 610 Comment
  JEPS79973  Sagina maxima subsp. crassicaulis Joseph P. Tracy 1940-5-18 16564 Humboldt Trinidad 15 Comment
  HSC62891  Salicornia depressa J. M. DiTomaso 1979-5-20 1066 Humboldt Eureka Bay 3 mi. SW of Arcata on Samoa Rd. Comment
  HSC90251  Salicornia depressa Jean Hanson 1980-8-28 112 Humboldt Indian (Gunther) Island in Humboldt Bay, Eureka, across from Coast Guard Station within 30 ft. of high tide line Comment
  CAS-BOT-BC132666  Salix A. T. Whittemore 1980-3-15 80 -007 Humboldt Arcata, in residential area, along Alliance Road from Foster Ave. to the railroad tracks Comment
  CAS-BOT-BC132707  Salix A. T. Whittemore 1979-4-5 79 -013 Humboldt Arcata, along Alliance Road immediately north of Arcata High School 6 Comment
  CAS-BOT-BC132712  Salix A. T. Whittemore 1980-3-15 80 -009 Humboldt Arcata, in residential area, along Alliance Road from Foster Ave. to the railroad tracks Comment
  UC1196671  Salix eastwoodiae Joseph P. Tracy 1935-7-26 14268 Humboldt meadows at Water Dog Lakes; Trinity Summit 1828 Comment
  CAS-BOT-BC106856  Salix hookeriana Harold E. Parks 1931-8-1 01053 Humboldt Little River Lagoon Comment
  CAS-BOT-BC107706  Salix hookeriana Harold E. Parks 1931-3-24 915 a Humboldt Trinidad 90 Comment
  CAS-BOT-BC107716  Salix hookeriana Doris K. Kildale 1926-7-11 2364 Humboldt Mouth of Bear River - Capetown Comment
  CAS-BOT-BC107761  Salix hookeriana Harold E. Parks; Carleton R. Ball; Joseph P. Tracy 1932-5-11 1221 Humboldt In pine barrens near the coast, 1 mile north of Samoa. Comment
  CAS-BOT-BC107771  Salix hookeriana Harold E. Parks; Carleton R. Ball; Joseph P. Tracy 1932-5-11 1226 Humboldt In pine barrens near the coast, 1 mile north of Samoa. Comment
  CHSC9655  Salix hookeriana E. L. Smith 1971-8-18 1025 A Humboldt Clam Beach County Park ca. 6 mi s of Trinidad. Comment
  HSC19959  Salix hookeriana C. R. Ball, H. E. Parks, J. P. Tracy 1932-5-11 1225 Humboldt 1 mi. N of Samoa, near coast 0 Comment
  HSC19967  Salix hookeriana J. R. Woodside 1963-2-17 45 Humboldt 1.25 mi. N of Fairhaven Comment
  HSC20150  Salix hookeriana Francis Winter 1960-3-26 Humboldt Samoa Peninsula 6 mi. W of Arcata Comment
  HSC90399  Salix hookeriana Jean Hanson 1980-3-8 9 Humboldt Indian (Gunther) Island, Humboldt Bay, Eureka, W end of island Comment
  JEPS12929  Salix hookeriana Joseph P. Tracy 1931-4-4 9329 Humboldt near Samoa; Northern Coast Region, Humboldt Bay 6 Comment
  JEPS12962  Salix hookeriana Joseph P. Tracy 1931-8-23 9619 Humboldt sand dunes near Samoa; Northern Coast Region, Humboldt Bay 6 Comment
  UC1356324  Salix hookeriana Theodore J. Crovello 1965-4-8 676 Humboldt along Somoa Rd about 200 ft n Samoa Club Comment
  UC469128  Salix hookeriana Joseph P. Tracy 1931-4-4 9330 Humboldt sand dunes near Samoa; Northern Coast Region, Humboldt Bay 6 Comment
  UC470423  Salix hookeriana Joseph P. Tracy 1931-9-19 9680 Humboldt near Alton; Northern Coast Ranges, Van Duzen River 30 Comment
  UC470425  Salix hookeriana Joseph P. Tracy 1931-10-3 9710 Humboldt Blue Slide Northern Coast Ranges, Van Duzen River 91 Comment
  UC470437  Salix hookeriana Joseph P. Tracy 1931-10-18 9738 Humboldt Camp Grant Northern Coast Ranges, Eel River 60 Comment
  UC490458  Salix hookeriana Joseph P. Tracy 1932-5-10 9952 Humboldt Mattole R. near Petrolia; North Coast Region, Mattole R. 15 Comment
  UC490469  Salix hookeriana Joseph P. Tracy 1932-9-5 10769 Humboldt Mattole R. near Petrolia; Northern 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
  UC512081  Salix hookeriana Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-11 1224 Humboldt 1 mi n Samoa (pine barrens near the coast) Comment
  UC512111  Salix hookeriana Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-11 1204 Humboldt 4 1/2 mi s Trinidad; Little River Lagoon Comment
  UC526715  Salix hookeriana Joseph P. Tracy 1934-6-28 13267 Humboldt Salmon Creek Valley around Humboldt Bay Northern Coast Ranges, Humboldt Bay, Salmon Creek Valley 9 Comment
  UC537984  Salix hookeriana Joseph P. Tracy 1934-9-22 13676 Humboldt mouth of Mad R.; North Coast Ranges, Mad R. 9 Comment
  POM218954  Salix laevigata H. P. Bracelin 1931-5-1 270 Humboldt Sylvandale, between Miranda and Meyers. S Fork of Eel River. Comment
  UC1225918  Salix lasiandra subsp. lasiandra Joseph P. Tracy 1947-8-24 17896 Humboldt meadow at Box Camp Box Camp; Trinity Summit 1463 Comment
  CAS-BOT-BC107588  Salix lasiolepis Joseph P. Tracy; Carleton R. Ball; Harold E. Parks 1932-5-17 1318 Humboldt On banks of Redwood Creek, at Berry's, on Trinity Highway 274 Comment
  CAS-BOT-BC107644  Salix lasiolepis Joseph P. Tracy 1933-4-2 10959 Humboldt On open grassy slope of Berry's Mountain, on Trinity Highway, east of Redwood Creek 762 Comment
  HSC43415  Salix lasiolepis R. Sutherland 1978-2-18 2 .18278 Humboldt S side mouth of Mattole River 11 Comment
  HSC96365  Salix lasiolepis Gordon Leppig 1999-4-15 1123 Humboldt Big Lagoon County Park, Big Lagoon Bog, E fen edge 3 Comment
  POM161056  Salix lasiolepis Joseph P. Tracy 1926-9-19 7804 Humboldt Valley of S Yager Creek 762 Comment
  UC1196623  Salix lasiolepis Joseph P. Tracy 1932-10-12 10874 Humboldt Miranda Northern Coast Ranges, South Fork of Eel River 121 Comment
  UC1196660  Salix lasiolepis H. E. Parks and Joseph P. Tracy 1931-5-17 9414 Humboldt thicket near mouth of Willow Creek; Northern Coast Ranges, Willow Creek 152 Comment
  UC469415  Salix lasiolepis Joseph P. Tracy 1927-5-13 7996 Humboldt Redwood Creek, at Berry's 274 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
  UC481807  Salix lasiolepis H. P. Bracelin 1931-5-1 269 Humboldt Sylvandale, between Miranda and Meyers South Fork of Eel River Comment
  UC481808  Salix lasiolepis H. P. Bracelin 1931-5-1 269 Humboldt Sylvandale, between Miranda and Meyers South Fork of Eel River Comment
  UC506397  Salix lasiolepis Joseph P. Tracy 1933-3-19 10934 Humboldt Bridgeville Northern Coast Ranges, Van Duzen River (along river) 228 Comment
  UC506398  Salix lasiolepis Joseph P. Tracy 1933-4-9 10968 Humboldt Bridgeville Northern Coast Ranges, Van Duzen River (along river) 228 Comment
  UC506404  Salix lasiolepis Joseph P. Tracy 1932-10-8 10866 Humboldt Berry's Mt. Northern Coast Ranges (on Trinity Hwy) 762 Comment
  UC506514  Salix lasiolepis B. S. and C. S. Ball 1933-9-12 2531 Humboldt 2 mi. n. Trinidad (at home of Mrs. and Mrs. Harold E. Parks) Comment
  UC511971  Salix lasiolepis Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-13 1253 Humboldt 2 mi. e. of Redwood Hwy. and above Blue Lake Rd. Engelhart gravel pit (floodplain of Mad R.); Mad River Comment
  UC519332  Salix lasiolepis Joseph P. Tracy 1933-10-15 13094 Humboldt near Miranda South Fork of Eel River 121 Comment
  UC519348  Salix lasiolepis Joseph P. Tracy 1933-11-12 13115 Humboldt Miranda North Coast Ranges, South Fork of Eel River 91 Comment
  CAS-BOT-BC107408  Salix lasiolepis var. lasiolepis Doris K. Kildale 1927-5-13 3145 Humboldt Redwood Creek at Berry's 289 Comment
  CAS-BOT-BC107418  Salix lasiolepis var. lasiolepis Doris K. Kildale 1926-4-1 1701 Humboldt [Dobbyns] Dobbyn Creek Comment
  CAS-BOT-BC107420  Salix lasiolepis var. lasiolepis Alice Eastwood 1913-7-3 3416 Humboldt Bear River, McCourtneys Bridge Comment
  CAS-BOT-BC125632  Salix melanopsis Joseph P. Tracy 1931-9-7 9647 Humboldt Trinity River Valley, at Willow Creek 152 Comment
  CAS-BOT-BC125637  Salix melanopsis Mrs. H. P. Bracelin 1931-5-2 284 Humboldt East of Redwood Highway, 6 km. south of Alton 20 Comment
  HSC20061  Salix melanopsis C. R. Ball, H. E. Parks, J. P. Tracy 1932-5-12 1234 Humboldt Van Duzen River, 1.5 mi. E of Alton 30 Comment
  JEPS12936  Salix melanopsis Joseph P. Tracy 1931-5-3 9344 Humboldt Mad River near Blue Lake; Northern Coast Region 15 Comment
  LA208881  Salix melanopsis Harold E. Parks; 1931-5-14 965 Humboldt Van Duzen River between Alton and Carlotta 15.0 Comment
  POM160837  Salix melanopsis Joseph P. Tracy 1920-5-31 5334 Humboldt Mouth of Yager Creek. 30 Comment
  POM218957  Salix melanopsis H. P. Bracelin 1931-5-2 283 Humboldt E of Redwood Hwy, 6km S of Alton. 20 Comment
  SD909  Salix melanopsis Harold E. Parks 1931-5-14 960 Humboldt Van Duzen River between Alton and Carlotta 14 Comment
  UC469450  Salix melanopsis Joseph P. Tracy 1931-6-14 9580 Humboldt Van Duzen R., Alton Alton; Northern Coast Region, Van Duzen R., Alton 30 Comment
  UC481284  Salix melanopsis Harold E. Parks 1931-5-14 960 Humboldt Van Duzen R. between Alton and Carlotta; Van Duzen R. 15 Comment
  UC481292  Salix melanopsis Harold E. Parks 1931-5-14 964 Humboldt Van Duzen R. between Alton and Carlotta; Van Duzen R. 15 Comment
  UC490556  Salix melanopsis C. R. Ball, H. E. Parks and Joseph P. Tracy 1932-5-17 10069 Humboldt Redwood Creek at Berrys; North Coast Ranges, Redwood Creek 274 Comment
  UC490564  Salix melanopsis Joseph P. Tracy 1932-5-1 9849 Humboldt along Van Duzen R. Alton; North Coast Ranges, Van Duzen R. 30 Comment
  UC512011  Salix melanopsis Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-12 1234 Humboldt 1 1/2 mi. e. Alton (floodplain of Van Duzen R.); Van Duzen R. 30 Comment
  UC519374  Salix melanopsis Joseph P. Tracy 1933-6-9 12532 Humboldt along Eel R. Shively; Northern Coast Ranges, , Eel R. 30 Comment
  RSA0005852  Salix parksiana H. E. Parks 1931-5-14 962 Humboldt Van Duzen River between Alton and Carlotta. 15 Comment
  RSA0030801  Salix parksiana H. E. Parks 1931-5-14 0961 Humboldt Ban Duzen River between Alton and Carlotta 15 Comment
  CAS-BOT-BC129202  Salix piperi Carleton R. Ball; Harold E. Parks; Joseph P. Tracy 1932-5-12 1231 Humboldt Floodplain of the Van Duzen River, 1 1/2 miles east of Alton 30 Comment
  CAS-BOT-BC129207  Salix piperi Doris K. Kildale 1927-5-15 3291 Humboldt Mattole River Valley Comment
  HSC20083  Salix scouleriana W. K. Parks Jul 1933 Humboldt S Fork Mtn. Comment
  UC1173625  Salix scouleriana Joseph P. Tracy 1937-3-21 15238 Humboldt near Grizzly Creek Van Duzen R. 91 Comment
  UC275521  Salix scouleriana Joseph P. Tracy 1924-7-4 6716 Humboldt at Hungry Hollow Bald Mt.; Northern Coast Ranges 762 Comment
  RSA5688  Salix sessilifolia H. E. Parks 1931-5-14 961 Humboldt Van Duzen River between Alton and Carlotta. 15 Comment
  HSC90745  Salix sitchensis Jean Hanson 1980-3-8 20 Humboldt Indian (Gunther) Island, Humboldt Bay, Eureka, W end of island Comment
  UC481214  Salix sitchensis Harold E. Parks 1931-5-20 995 Humboldt Mad R. Blue Lake; , Blue Lake 15 Comment
  UC481381  Salix sitchensis Harold E. Parks 1931-3-26 906 Humboldt on Van Duzen R. Alton; Van Duzen R., Alton 15 Comment
  UC492340  Salix sitchensis Harold E. and Susan T. Parks 1932-4-12 1111 Humboldt on Van Duzen R. Blue Slide; Van Duzen R., Blue Slide 90 Comment
  UC585975  Salpichroa origanifolia Joseph P. Tracy 1933-8-22 12972 Humboldt Eureka; Northern Coast Ranges 0 Comment
  RSA21578  Sambucus caerulea C. B. Wolf 1937-9-8 9299 Humboldt North Coast Range, Bull Creek-Petrolia Road, Bull Creek, 6 miles west of Redwood Highway 183 Comment
  RSA1255  Sambucus callicarpa B. D. Stark 1929-7-24 1388 Humboldt 2 miles north of Arcata 30 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
  HSC44536  Sambucus nigra subsp. caerulea Brad Klipfel 1973-7-1 144 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  SFV18554  Sambucus racemosa W. Coleman, B. Hammer, J. Radtke 1998-3-20 954 Humboldt Arcata marsh. 3 Comment
  HSC100412  Sambucus racemosa Carl C. Marshall Apr 1886 164 Humboldt Near Humboldt Bay. Comment
  CAS-BOT-BC235121  Sambucus racemosa var. racemosa Doris K. Kildale 1927-3-22 2938 Humboldt North Fork of Elk River Comment
  HSC3981  Sambucus racemosa var. racemosa A. E. Inman 1962-5-25 Humboldt S bank of Mad River, S of Azalea Hill Rd. Comment
  UC168945  Sambucus racemosa var. racemosa Joseph P. Tracy 1910-6-19 3155 Humboldt near Forks of Eel River; Northern Coast Region, region about Humboldt Bay 0 Comment
  UC1197115  Sanicula arctopoides Joseph P. Tracy 1933-5-9 12164 Humboldt vicinity of Trinidad (Northern Coast Region); Northern Coast Region 60 Comment
  UC1197086  Sanicula laciniata Joseph P. Tracy 1921-4-24 5454 Humboldt facing South Fork Eel River (Northern Coast Ranges, Phillipsville); Northern Coast Ranges, Phillipsville 121 Comment
  JEPS993  Sanicula laciniata Joseph P. Tracy 1927-5-8 7961 Humboldt Miranda, along South Fork of Eel River South Fork Eel River; Miranda, South Fork Eel River 121 Comment
  HSC45599  Sanicula tracyi Thomas W. Nelson 1978-5-27 4091 Humboldt McKneown Ranch N of Dinsmore. Comment
  UC1222809  Sanicula tracyi Joseph P. Tracy 1950-4-20 18606 Humboldt opposite Buck Mountain (Dinsmore's, along Van Duzen River); along Van Duzen River, opposite Buck Mountain 762 Comment
  HSC55291  Sanicula tuberosa Terry Griswold, Butler 1979-7-10 6264 Humboldt Near Board Camp Mountain 1372 Comment
  JEPS950  Sanicula tuberosa Joseph P. Tracy 1925-5-30 7037 Humboldt Northern Coast Ranges, Laribee Valley Laribee Valley; Northern Coast Ranges, Laribee Valley 701 Comment
  UC642316  Sanicula tuberosa Joseph P. Tracy 1933-6-13 12568 Humboldt Hoopa Mountain, near summit on road from Hoopa westward to Bair's Hoopa Mountain 1066 Comment
  HSC101030  Sanicula tuberosa John McRae 1994-7-1 36 Humboldt Route 1 to FS Rd. 3N14. Approx. .25 mi. to end of PC-1. 1220 Comment
  HSC99067  Sanicula tuberosa C. Witte 2007-5-21 54 Humboldt Board Camp Mountain. Near intersection of Forest Service Road 4N38 with National Forest 1. 1394 Comment
  UC412776  Sarcodes sanguinea P. E. Goddard 1906-6 681 Humboldt ridge near <Lassick> Peak Comment
  UC1198886  Saxifraga aprica Joseph P. Tracy 1932-7-18 10709 Humboldt head of Brett Hole (Trinity Summit); Klamath Mountains, Trinity Summit 1828 Comment
  JEPS42981  Saxifraga ferruginea Jos. P. Tracy 1932-7-18 10710 Humboldt head of Brett Hole (Trinity Summit); , Brett Hole Comment
  SEINET3411481 Image available Saxifraga mertensiana Joseph P. Tracy 1922-4-30 6009 Humboldt Mouth of South Fork of Trinity river 152 Comment
  HSC90687  Schoenoplectus americanus Gail Newton 1982-5-31 3562 Humboldt Elk River Wildlife Area, Eureka Comment
  RSA91480  Schoenoplectus maritimus F. W. Peirson 1923-7-11 3660 Humboldt Flats north of Eureka. Comment
  UC1103629  Scirpus cernuus Joseph P. Tracy 1926-8-29 7779 Humboldt near Samoa (on shore around Humboldt Bay); Northern Coast Region, Humboldt Bay, near Samoa 3 Comment
  RSA167281  Scirpus microcarpus Joseph P. Tracy 1949-9-1 18533 Humboldt Trinity River Valley, at Willow Creek: Dusky s Spring 152 Comment
  SEINET3991333  Scoliopus bigelovii Unknown 1922-5-14 6049 Humboldt Kneeland Prairie 762 Comment
  UC1197794  Scoliopus bigelovii Joseph P. Tracy 1913-5-4 4060 Humboldt Kneeland Prairie Northern Coast Ranges, Kneeland Prairie 762 Comment
  JEPS11415  Scrophularia californica Lincoln Constance 1934-5-26 684 Humboldt s end of Dyerville Bridge; Bull Creek Region, South Fork Eel River 45 Comment
  POM43296  Scrophularia californica Marcus E. Jones 1924-4-26 s.n. Humboldt Fortuna. Comment
  HSC37231  Scrophularia californica Lon Hall 1975-6-20 403 Humboldt About 2 mi. N from Shelter Cove Rd. on Horse Mtn. Rd., along Bear Creek, from streamside up to unused dirt logging road above creek 488 Comment
  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
  HSC100509  Scutellaria angustifolia Carl C. Marshall Jun 1885 90 Humboldt Mountain ridges. Comment
  UC25792  Scutellaria antirrhinoides Harley P. Chandler June, 1901 1323 Humboldt Hupa Indian Reservation; North Coast Ranges, Hupa Indian Reservation 152 Comment
  POM126381  Scutellaria antirrhinoides P. E. Goddard 1907-6-16 b. 127 Humboldt Van Duzen Comment
  UC1239696  Scutellaria antirrhinoides Joseph P. Tracy 1933-7-9 12654 Humboldt Brannan Mountain; Northern Coast Ranges, Brannan Mountain 1066 Comment
  HSC25984  Scutellaria californica Thomas W. Nelson 1970-9-3 228 Humboldt Mad River. Comment
  UC1222178  Sedum divergens Joseph P. Tracy 1935-7-24 14199 Humboldt near Ranger Station (Trinity Summit); , near Ranger Station 1828 Comment
  HSC70891  Sedum laxum subsp. heckneri Gail Newton 1980-7-23 1707 Humboldt Near Packsaddle Ridge 1463 Comment
  HSC98691  Sedum radiatum Cara Witte 2008-7-7 837 Humboldt Horse Mountain Botanical Area. 6N38. 1 mile southeast of Horse Mountain Mine. 1312 Comment
  RSA0074871  Sedum radiatum subsp. radiatum C. B. Wolf 1937-6-14 2858 Humboldt Kneeland Prairie; North Coast Range. 823 Comment
  RSA0081473  Sedum spathulifolium C. B. Wolf 1927-8-28 1163 Humboldt 8 miles above Weitchpec, Trinity River. Comment
  SEINET12218775  Sedum spathulifolium J. P. Tracy 1950-1 18715 Humboldt Wildcat Road, 2 mi S of Ferndale 305 Comment
  HSC89507  Sedum spathulifolium var. pruinosum M. Roantree 1985-6-11 89 Humboldt W side of Trinidad Head, W of trail Comment
  HSC48308  Sedum spathulifolium var. spathulifolium R. Sutherland 1978-4-23 11 .23478 Humboldt Telegraph Ridge N of Green Ridge 695 Comment
  RSA170262  Selaginella oregana Joseph P. Tracy 1920-10-24 5407 Humboldt Near Korbel. 640 Comment
  HSC45074  Selaginella wallacei R. Sutherland 1978-4-22 1 .22478 Humboldt Along King's Crest Trail 1098 Comment
  HSC99136  Selaginella wallacei C. Witte 2008-10-18 1063 Humboldt Horse Mountain Botanical Area. Approxmiately 1 mile north of Horse Mountain Communication Towers. Forest Service Road 6N66 1456 Comment
  UC1284956  Senecio blochmaniae R. F. Hoover 1946-10-29 6526 Humboldt near Callender railroad siding Comment
Read comments
Mar 19 2007
  SBBG62728  Senecio hydrophilus R. Hartwell 1938-8-6 113 Humboldt near Eureka Comment
  CAS-BOT-BC364019  Senecio integerrimus var. major Doris Kildale 1931-5-10 10583 Humboldt Snow Camp Comment
  HSC6121  Senecio integerrimus var. major D. E. Anderson 1965-5-22 3727 Humboldt Hunt Ranch, 3-4 mi. N of Bridgeville Comment
  CAS-BOT-BC364015  Senecio integerrimus var. major Duart V. Brown 1947-4-2 29 Humboldt Near Sweed [Sweet] Creek, Trinity River 457 Comment
  CDA7633  Senecio jacobaea F. Wetherbee 1959-8-27 2983 Humboldt Simpson property, Sweezey Dam, Mad River, south of Korbel. 0 Comment
  UC128739  Senecio sylvaticus Joseph Burtt Davy and Walter C. Blasdale 1899-6-12 5446 Humboldt near Elk Prairie; north-western California Comment
  UC450005  Senecio sylvaticus Joseph P. Tracy 1918-9-1 5095 Humboldt Nowella Camp, on old Kneeland Prairie Road 457 Comment
  SEINET11802649  Senecio sylvaticus J. P. Tracy 1949-1 18467 Humboldt S of crossing of powerline,E of headwaters of Redwood Creek, Kinsey Ridge, S from Grouse Mt., 2-6 mi 1280 Comment
  UC204868  Senecio sylvaticus Joseph P. Tracy 1918-9-1 5095 Humboldt Newells Camp on old Kneelans Praire Road 457 Comment
  HSC57876  Senecio triangularis Overton, Butler 1979-7-31 11412 Humboldt Near Water Dog Lakes, close to the town of Hoopa 1830 Comment
  HSC6128  Senecio triangularis William J. Ferlatte, B. D. Rogers, D. E. Anderson 1966-6-8 2090 Humboldt 2 mi. W of Forest Glen, Granite Canyon. Comment
  UC581709  Senecio triangularis Joseph P. Tracy 1930-7-16 8934 Humboldt in wet meadow at McKay Camp (South Fork Mountain); , McKay Camp 1676 Comment
  UC1223185  Senecio vulgaris Joseph P. Tracy 1943-11-28 17454 Humboldt Eel River Bar at mouth Van Duzen (near Alton); Eel River Bar at mouth of Van Duzen Comment
  CAS-BOT-BC85839  Sequoia sempervirens Rudolf W. Becking 1968-11-27 s.n. Humboldt Weott, Humboldt Redwoods State Park, Federation Grove. Comment
  MACF022873  Sequoia sempervirens Trudy R. Ericson 1978-9-3 964 Humboldt 3 mi. east of Carlotta on St. 36 60 Comment
  RSA175208  Sequoia sempervirens Robert F. Thorne 1957-9-2 18996 Humboldt Burlington State Park, just S of Weott. Comment
  SD33  Sequoia sempervirens Charlotte M. Wilder 1929-1 Humboldt Carlotta Comment
  UC667965  Sequoia sempervirens Joseph P. Tracy 1935-12-8 14764 Humboldt near Korbel 304 Comment
  SEINET5716899 Image available Sequoia sempervirens Ronald J. Mastrogiuseppe 1965-1 s.n. Humboldt Humboldt Redwoods State Park; near the Founders Tree.; Humboldt Redwoods State Park Comment
  UC170180  Sidalcea asprella subsp. nana Harley P. Chandler June, 1901 1466 Humboldt Klamath River North Coast Ranges, Klamath River 426 Comment
  SD73190  Sidalcea malachroides Darley F. Howe 1969-6-4 4626 Humboldt 14.6 miles east of Alton on Highway 36. 299 Comment
  HSC35603  Sidalcea malviflora subsp. nana Thomas W. Nelson, Jane P. Nelson, James Nelson 1975-7-15 2009 Humboldt French Camp, Bald Hills. Comment
  RSA28793  Sidalcea malviflora subsp. patula H. E. Parks 1940-05 24177 Humboldt Dow s Prairie 30 Comment
  UC176964  Sidalcea malviflora subsp. patula Joseph P. Tracy and Ernest B. Babcock 1912-5-11 3596 Humboldt near Hydesville; Northern Coast Region, near Hydesville 30 Comment
  HSC104351  Sidalcea malviflora subsp. patula James Regan, Humboldt Redwood Co., LLC 2005-7-7 13 Humboldt Kneeland 854 Comment
  CAS-BOT-BC213157  Sidalcea oregana subsp. eximia Joseph P. Tracy 1937-7-16 15432 Humboldt Dow's Prairie 60 Comment
  UC205633  Sidalcea oregana subsp. eximia Joseph P. Tracy 1920-8-29 5394 Humboldt Dows Prairie Northern Coast Region, around Humboldt Bay Comment
  CDA18218  Silene californica G. D. Barbe, T. C. Fuller 1974-6-17 1846 Humboldt North Coast Ranges; Shelter Cove, Upper Pacific Drive, at Sea View Rd. 91 Comment
  UC852804  Silene californica Elizabeth Parsons Hawver Jun 1905-June 1915 Humboldt Carlotta Comment
  POM264848  Silene californica Lincoln Constance, A. A. Beetle 1940-5-16 2610 Humboldt Coastal bluffs above Alton. Comment
  UC1541414  Silene californica H. E. and S. T. Parks June 1928 258 Humboldt Longvale 182 Comment
  UC1198350  Silene campanulata Joseph P. Tracy 1933-7-11 12675 Humboldt Horse Mountain 1432 Comment
  UC668096  Silene campanulata Joseph P. Tracy 1937-7-29 15591 Humboldt w slope near top South Fork Mountain (at Hyampom Trail); , at Hyampom Trail 1676 Comment
  HSC76246  Silene campanulata subsp. glandulosa Denis Kearns 1981-6-24 1 Humboldt Near Cedar Camp 1219 Comment
  UC162884  Silene campanulata subsp. glandulosa Harley P. Chandler June, 1901 1471 Humboldt Klamath River North Coast Ranges, Klamath River 426 Comment
  HSC45386  Silene gallica R. York 1978-5-20 170 Humboldt Along Bluff Creek Trail 610 Comment
  HSC59744  Silene gallica Clark L. Miller 1979-5-9 6116 Humboldt Samoa Dunes W of Samoa Blvd. Comment
  BLMAR349  Silene hookeri Jennifer Anthony-Wheeler 2003-5-5 349 Humboldt Eden valley 807 Comment
  UC1115828  Silene hookeri Joseph P. Tracy 1939-5-14 16283 Humboldt lower foothills of nw slope Buck Mountain 914 Comment
  UC184692  Sisymbrium altissimum Joseph P. Tracy 1912-8-3 3975 Humboldt in Valley of Van Duzen River (opposite Buck Mountain, Dinsmore's Ranch); Northern Coast Ranges, Dinsmore's Ranch 762 Comment
  UC1198796  Sisymbrium officinale Joseph P. Tracy 1932-7-17 10658 Humboldt Trinity Summit at Corral Prairie Corral Prairie; Klamath Mountains, Trinity Summit, Corral Prairie 1524 Comment
  RSA246759  Sisyrinchium bellum Robert F. Thorne, Percy C. Everett 1965-8-9 35302 Humboldt Big Lagoon. 3 Comment
  UC1196380  Sisyrinchium bellum Joseph P. Tracy 1931-6-7 9572 Humboldt 2 mi n Trinidad 60 Comment
  HSC90646  Sisyrinchium californicum Gail Newton 1983-6-5 3553 Humboldt Elk River Wildlife Area, Eureka Comment
  UC162691  Sisyrinchium californicum J. P. Tracy 1911-6-25 3247 Humboldt immediate vicinity of Eureka 0 Comment
  UC275574  Sisyrinchium californicum Joseph P. Tracy 1924-8-3 6764 Humboldt Big Lagoon; Northern Coast Region 6 Comment
  HSC59024  Solanum parishii M. A. Baker 1979-6-7 784 Humboldt N bank of road to Snow Mtn. 610 Comment
  UC26254  Solanum umbelliferum Harley P. Chandler 1901-6-1 1351 Humboldt Hupa Indian Reservation; North Coast Ranges, Hupa Indian Reservation 152 Comment
  UC577352  Solanum umbelliferum Joseph P. Tracy 1937-5-30 15316 Humboldt Bridgeville 198 Comment
  SEINET10872207  Solidago Mary Susan Taylor 1990-8-22 Taylor 6079 Humboldt Samoa Recreation Area on Samoa Peninsula, Staging Area, Eureka. Coastal scrub in ORV area. Comment
  CAS-BOT-BC385867  Solidago canadensis Mrytle Paulson 1918-4-1 s.n. Humboldt Eureka Comment
  CAS-BOT-BC365436  Solidago elongata Doris K. Kildale 1926-7-11 2369 Humboldt Capetown - Ferndale road near Mountain Glen Comment
  HSC48316  Solidago elongata Brad Klipfel 1973-8-3 306 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  JEPS32394  Solidago elongata Lincoln Constance 1934-6-25 925 Humboldt on Redwood Highway 4 mi n of Dyerville and n boundary Humboldt Redwood Park (Englewood, Bull Creek Region, South Fork Eel River); South Fork Eel River, Bull Creek Region, Englewood Comment
  UC479494  Solidago elongata Marcus E. Jones, A. M. 1931-7-12 29135 Humboldt Alton Comment
  UC494190  Solidago elongata H. E. and S. T. Parks 1930-9-14 785 Humboldt n shore Big Lagoon Comment
  BLMAR109  Solidago spathulata Jennifer Anthony-Wheeler 1994-9-8 109 Humboldt Samoa/manilla dunes, growing in every dune mat area in the samoa rare plant protection area 12 Comment
  RSA24389  Solidago spathulata C. B. Wolf 1941-2-22 9916 Humboldt Little River Beach State Park (north of Arcata). 8 Comment
  SEINET3896347  Solidago spathulata Thomas Nelson 1971-11-11 598 Humboldt At the foot of Murray Rd. McKinleyville.; 0 Comment
  UC249853  Solidago spathulata Joseph P. Tracy 1924-9-21 6901 Humboldt around Humboldt Bay (Eureka); Northern Coast Region, around Humboldt Bay, Eureka 15 Comment
  CAS-BOT-BC364971  Solidago velutina subsp. californica Joseph P. Tracy 1937-9-5 15682 Humboldt Trinity River Valley, at Willow Creek 152 Comment
  UCSB30614  Solidago velutina subsp. californica Edwards, David 1974-8-1 Humboldt About 50 ft. N. of junction of the Mad River and Puter Creek, on the east bank of Mad River, ca. 2 mi. SW of Korbel Comment
  RSA10099  Sorghum halepense Joseph P. Tracy 1925-9-6 7263 Humboldt Trinity River Valley, Near the south fork Comment
  RSA85195  Sparganium angustifolium subsp. emersum F. W. Peirson 1923-7-11 3642 Humboldt 20 miles north of Eureka. Comment
  BLMAR314  Sparganium emersum Jennifer Anthony-Wheeler 2002-8-9 314 Humboldt Lost Coast Headland, growing along edge of middle pond 121 Comment
  UCR32178  Spartina foliosa David J. Keil 1983-7-2 17296 Humboldt Humboldt Bay salt marsh at Arcata Corporation Yard [600 G St.] Comment
  CAS-BOT-BC389921  Spergula arvensis Robert F. Thorne; P. Everett 1965-8-8 35265 Humboldt N edge of Eureka, E of Hwy. 101 4 Comment
  UCD99184  Spergula arvensis Collector unknown 1925-6-7 1613 Humboldt Willow Camp. Comment
  CHSC33022  Spergula arvensis subsp. arvensis James Payne Smith Jr. 1970-6-7 3805 Humboldt 0.6 miles north of Luffenholtz Beach along Calif. 1 near Trinidad. Comment
  HSC37969  Spergularia salina Peter Sorensen 1976-6-19 Humboldt Woodley Island Comment
  UC666994  Spiranthes porrifolia Joseph P. Tracy 1937-6-26 15376 Humboldt Willow Creek Trinity River Valley 152 Comment
  HSC40375  Spiranthes romanzoffiana Linda M. Barker 1976-9-3 1695 Humboldt Lanphere-Christensen Dunes, 3 mi. W of Arcata. Comment
  HSC100151  Spirodela polyrhiza M. A. Ericksen 1979-5-29 308 Humboldt Northern-most of Clam Beach ponds Comment
  UC1541656  Stachys ajugoides var. ajugoides H. E. and S. T. Parks August 1943 24252 Humboldt Spruce Cove Trinidad 64 Comment
  UC1239731  Stachys ajugoides var. rigida Joseph P. Tracy 1949-7-7 18334 Humboldt Table Bluff 91 Comment
  UC180214  Stachys ajugoides var. rigida Joseph P. Tracy 1914-6-14 4512 Humboldt near Hydesville; Northern Coast Region 60 Comment
  UC25970  Stachys ajugoides var. rigida J. Burtt Davy 1899-6-21 5720 Humboldt Supply Creek North Coast Ranges, Hoopa Valley Comment
  UC577319  Stachys ajugoides var. rigida Joseph P. Tracy 1930-7-23 9126 Humboldt Cold Springs Northern Coast Ranges, Horse Mountain 1432 Comment
  UCLA70885  Stachys ajugoides var. rigida C. Epling Jun 1938 Humboldt Williams Grove of Redwoods Comment
  UCLA71161  Stachys ajugoides var. rigida C. Epling Aug 1933 Humboldt near Humboldt Co. line (Weaverville-Arcata Road) Comment
  UC32580  Stachys chamissonis Chesnut and Drew 1888-8-10 Humboldt N. Fork Mill Comment
  POM92413  Stachys emersonii L. R. Abrams 1922-6-25 s.n. Humboldt 2 miles south of Fortuna Comment
  HSC27045  Stachys mexicana Brad Klipfel 1973-8-25 289 Humboldt Near Lazy L Ranch, Fickle Hill Rd. Comment
  RSA20782  Stachys rigida subsp. rigida Carl B. Wolf 1937-8-13 9246 Humboldt North Coast Range 11 mi. E. of Hoopa Valley on New Road towards Trinity Summit. 1524 Comment
  HSC58159  Stachys rigida var. rigida G. L. Clifton, Griswold 1979-8-2 12219 Humboldt Near Oregon Creek, close to the town of Hoopa 1663 Comment
  HSC89487  Stellaria media P. A. Daly 1986-3-12 67 Humboldt Trinidad Head, along trail 61 Comment
  HSC58059  Stenanthium occidentale G. L. Clifton, Griswold 1979-8-1 11935 Humboldt Near Mill Creek Lakes, close to the town of Hoopa. 1692 Comment
  UC1197797  Stenanthium occidentale Joseph P. Tracy 1948-9-5 18172 Humboldt ne of Hawkins Bar; Trinity Summit Range, Happy Camp Mountain 1280 Comment
  UC1199362  Stephanomeria virgata subsp. pleurocarpa Joseph P. Tracy 1922-9-3 6112 Humboldt Bluff Creek, Klamath River Northern Coast Ranges, Klamath River 152 Comment
  HSC97968  Stipa lemmonii var. lemmonii Cara Witte, Michael Scott 2007-6-22 348 Humboldt Board Camp Mountain, jeep trail between Tri Board Camp and Fork Camp 1565 Comment
  CHSC111333  Stipa miliacea var. miliacea Barbara L. Wilson; Nick Otting 2012-7-3 17135 Humboldt Dean Creek Resort between the Eel River and the Old Redwood Highway, west of Highway 101; UTM zone 10T, 430910 east, 443867 north. 76 Comment
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Nov 6 2015
  HSC102604  Streptanthus tortuosus M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-28 1591 Humboldt Slopes above Bret Hole and below trail 6E18, 1.5 km SSW of Trinity Summit. 1778 Comment
  UC1541461  Streptanthus tortuosus var. orbiculatus W. K. Parks July, 1933 Humboldt Buck Mountain Comment
  HSC96249  Streptanthus tortuosus var. tortuosus Kaylea Eickhoff, Cara M. Witte 2005-6-8 4 Humboldt 1.7 mi. S of Hwy. 299 on Titlow Hill Rd. 980 Comment
  HSC102058  Streptopus amplexifolius M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-13 963 Humboldt Rustic Camp, northwest of Patterson Meadows Comment
  HSC58336  Streptopus amplexifolius Overton, Butler 1979-8-2 12644 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  UC22723  Swertia albicaulis var. nitida J. Burtt Davy 1899-6-21 5737 Humboldt e slope Hoopa Mt. (on the borders of Supply Creek); North Coast Ranges, , Supply Creek Comment
  HSC73741  Swertia radiata M. A. Baker 1980-7-19 2995 Humboldt Near Bret Hole. 1814 Comment
  HSC40856  Symphoricarpos mollis Thomas W. Nelson 1976-7-9 2991 Humboldt Along ridge S of E peak of Mtn. Lassic group, (Signal Pk.). 1707 Comment
  HSC58831  Symphyotrichum bracteolatum Overton, Butler 1979-8-2 12678 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  HSC24019  Symphyotrichum chilense R. A. Vanbianchi 1971-9-10 79 Humboldt Junction of Fieldbrook Rd. and old Hwy. 299 Comment
  UCD150385  Symphyotrichum lentum William Anderson and H. Mc. 1964-8-6 s.n. Humboldt Little River. Comment
  UC672289  Symphyotrichum subspicatum Frank W. Peirson 1923-7-11 3882 Humboldt 7 mi n Arcata Comment
  RSA46853  Symphytum asperum Doris K. Kildale 1927-6-26 3588 Humboldt Wildcat Grade near Ferndale. Comment
  POM128331  Synthyris reniformis Jos. Burtt Davy, Walter C. Blasdale 1899-6-18 5617 Humboldt Bald Mtn, Northeast of Korbel. Comment
  UC582545  Synthyris reniformis Joseph P. Tracy 1926-2-28 7380 Humboldt East Fork of Willow Creek Canyon]; Northern Coast Ranges 457 Comment
  UC902236  Synthyris reniformis Joseph P. Tracy 1941-3-26 16812 Humboldt Willow Creek Canyon, along Trinity Highway, near crossing of East Fork Willow Creek Canyon 457 Comment
  CAS-BOT-BC376734  Tanacetum bipinnatum David D. Keck; J. Clausen 1935-6-16 3388 Humboldt Mouth of Little River Comment
  RSA21034  Tanacetum camphoratum C. B. Wolf 1937-6-18 8903 Humboldt Centerville Beach 3 Comment
  SD42343  Tanacetum vulgare Carl B. Wolf 1937-9-12 9330 Humboldt Big Lagoon, south side along Redwood Highway 6 Comment
  HSC48986  Taxus brevifolia M. A. Baker 1979-5-25 764 Humboldt Comment
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Feb 15 2013
  UC275507  Taxus brevifolia Joseph P. Tracy 1924-9-7 6862 Humboldt Grizzly Creek on the Van Duzen River Northern Coast Ranges, Van Duzen River, Grizzly Creek (shady places on river bottoms) 91 Comment
  HSC20433  Tellima grandiflora Elrid H. Spinas 1948-6-16 63 Humboldt Horse Mtn. Comment
  CAS-BOT-BC447406  Tellima grandiflora Kenneth Clark 1980-3-23 536 Humboldt Point Delgada; Alluvial terrace of south fork Dead Man's Gulch; Vascular Plants of Shelter Cove Comment
  HSC20427  Tellima grandiflora T. M. Mingo May 1965 Humboldt W of Fairhaven Dr. intersection with Hwy. 101 Comment
  HSC20428  Tellima grandiflora D. E. Anderson 1963-3-16 2382 Humboldt Scotia Bluffs Comment
  HSC89548  Tellima grandiflora M. Roantree 1985-5-2 30 Humboldt E side of Trinidad Head. Comment
  SD88395  Tellima grandiflora Darley F. Howe 1972-5-6 Humboldt 1.5 miles north of Phillipsville Comment
  CAS-BOT-BC392287  Thalictrum fendleri Doris K. Kildale 1926-4-4 1749 Humboldt Trinidad Comment
  UC160904  Thalictrum fendleri var. polycarpum Joseph P. Tracy 1908-6 2714 Humboldt opposite Buck Mountain; Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  SEINET200821  Thermopsis rhombifolia J. P. Tracy 1929-7-4 8612 Humboldt French Camp Ridge. 1067 Comment
  CHSC35608  Thlaspi montanum var. montanum Thomas W. Nelson; James L. Nelson 1980-6-10 5434 A Humboldt Six Rivers National Forest. Along the east side of Red Mountain. 1371 Comment
  UC1586873  Thlaspi montanum var. montanum Juha Pykala and D. H. Norris 1987-5-19 710 Humboldt Horse Mountain Road at intersection with ski-lift; Horse Mountain Road 1400 Comment
  UC1198811  Thlaspi montanum var. montanum Joseph P. Tracy 1939-4-29 16234 Humboldt near Weitchpec (along Trinity River); , near Weitchpec 121 Comment
  UC673196  Thlaspi montanum var. montanum Lincoln Constance and Reed C. Rollins 1942-5-12 2887 Humboldt Klamath River 7 mi ne Weitchpec (Klamath-Siskiyou Region); , Klamath River 121 Comment
  HSC45916  Thuja plicata Jerome Peterson 1978-4-16 6 Humboldt HSU Campus near Home Economics Building Comment
  NY17207  Thuja plicata A. Kellogg 1868-1 933 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
  UCR27987  Thuja plicata A. C. Sanders 1981-8-6 2309 Humboldt Russ Park, just south of Ferndale. 61 Comment
  HSC22843  Thysanocarpus curvipes D. E. Anderson, J. O. Sawyer, J. P. Smith 1970-5-10 5060 Humboldt Along road from Redwood Creek to Hoopa, 1-3 mi. W of Hoopa Comment
  HSC6991  Thysanocarpus curvipes D. E. Anderson 1962-5-1 2204 Humboldt 1 mi. W of Hoopa Comment
  HSC41607  Tiarella trifoliata D. E. Anderson, J. P. Smith 1971-6-18 - 1054 Humboldt 1 mi. W of Lord Ellis Summit Comment
  UC677699  Tiarella trifoliata var. unifoliata C. C. and S. K. Harris 1936-6-16 660 Humboldt Redwood forest on Yager Road from Carlotta 152 Comment
  HSC100653  Tiarella unifoliata Carl C. Marshall Jun 1886 323 Humboldt Trail E of Hoopa. Comment
  UC1197832  Tofieldia occidentalis subsp. occidentalis Joseph P. Tracy 1932-7-17 10672 Humboldt Trinity Summit; ridges E of Corral Prarie 1828 Comment
  HSC59080  Tolmiea diplomenziesii Thomas Wood 1979-5-15 194 Humboldt E of Arcata at Essex Park, .5 mi. E of W End Rd. 21 Comment
  BLMAR634  Tonella tenella Jennifer Wheeler 2011-6-15 634 Humboldt Lacks Creek, Pine Ridge Road 914 Comment
  CDA18217  Torilis arvensis G. D. Barbe, T. C. Fuller 1974-6-17 1845 Humboldt North Coast Ranges; Shelter Cove, Upper Pacific Drive, at Sea View Rd. 91 Comment
  HSC34707  Torilis arvensis Thomas W. Nelson 1974-7-20 1698 Humboldt McKeown Ranch N of Dinsmore Comment
  UC1197331  Torilis arvensis subsp. arvensis Joseph P. Tracy 1940-8-3 16692 Humboldt Cathey Ranch near Miranda 30 Comment
  HSC58686  Torreyochloa pallida var. pauciflora Overton 1979-8-1 12380 Humboldt Near Mill Creek, close to the town of Hoopa 1341 Comment
  SEINET7295169 Image available Torreyochloa pallida var. pauciflora Joseph P. Tracy 1940-1 16742 Humboldt Mouth of Little River 3 Comment
  CAS-BOT-BC169175  Toxicodendron diversilobum Volney Rattan 1878-1-1 s.n. Humboldt Undspecified Comment
  CAS-BOT-BC169179  Toxicodendron diversilobum John McLaren 1920-9-1 s.n. Humboldt Unspecified Comment
  JEPS63933  Toxicodendron diversilobum W. L. Jepson 1902-7-10 2003 Humboldt S. Fork Trinity R., Martin's Ranch Comment
  CAS-BOT-BC5362  Tracyina rostrata Joseph Prince Tracy 1916-6-20 4735 Humboldt Alder Point 304 Comment
  UC1199329  Tracyina rostrata Joseph P. Tracy 1916-6-20 4736 Humboldt Parry's Ranch Northern Coast Ranges, Dobbyn Creek 182 Comment
  UC1222896  Tracyina rostrata Joseph P. Tracy 1950-6-23 18859 Humboldt 3 mi ne Alderpoint; Dobbyn Creek 213 Comment
  UC582683  Tracyina rostrata Joseph P. Tracy 1930-6-15 8762 Humboldt Dobbyn Creek 152 Comment
  SEINET11800250  Tracyina rostrata J. P. Tracy 1950-1 18859 Humboldt Dobbyn Creek, 3 mi NE of Alderpoint 213 Comment
  HSC56957  Triantha occidentalis subsp. occidentalis Overton, Butler 1979-7-23 9470 Humboldt Near Horse Mtn. Creek, close to the town of Willow Creek 1326 Comment
  HSC97982  Triantha occidentalis subsp. occidentalis Cara Witte 2007-7-10 473 Humboldt Horse Mountain Botanical Area. Forest service Road 6N18. 1434 Comment
  SEINET12350141  Trichostema lanceolatum E. A. York 1990-1 2703 Humboldt USGS Redwood Field Station, Arcata Comment
  CDA40991  Trichostema laxum E. C. Whitney 1965-9-2 s.n. Humboldt [no additional data] 0 Comment
  SEINET11114238  Trientalis borealis subsp. latifolia Unknown 1913-6-25 4341 . Humboldt Plants of Northern Coast Ranges of California Dinsmore's Ranch; in valley of Van Duzen River opposite Buck Mountain, Humboldt County Altitude 2500 ft. Comment
  CHSC31274  Trientalis latifolia Mark Stopher 1980-5-20 70 Humboldt In dense forest along the Van Duzen River near Rte 36. Comment
  UC1223383  Trifolium albopurpureum var. dichotomum Joseph P. Tracy 1933-5-20 12245 Humboldt in valley along river Petrolia; Northern Coast Ranges, Mattole Valley Comment
  BLMAR740  Trifolium barbigerum Jennifer Wheeler 2015-5-18 740 Humboldt King range, strawberry rock grazing allotment down windy point 243 Comment
  HSC45121  Trifolium bifidum R. Sutherland 1978-5-19 17 .19578 Humboldt 183 Comment
  UC495641  Trifolium ciliolatum Joseph P. Tracy 1929-5-5 8567 Humboldt Phillipsville Northern Coast Ranges, South Fork Eel River 121 Comment
  SEINET6934960  Trifolium dichotomum Wanda P. Vestal, A. G. Vestal 1937-6-22 s.n. Humboldt Kneeland prairie, about 4 miles southeast of Kneeland. Comment
  HSC70358  Trifolium dubium M. A. Baker 1980-6-7 1867 Humboldt Near Ammon Creek 732 Comment
  UC162778  Trifolium dubium J. P. Tracy 1900-6-23 857 Humboldt immediate vicinity Eureka 0 Comment
  UCD108818  Trifolium dubium Linda M. Barker 1976-5-13 1476 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  HSC14995  Trifolium dubium J. W. Johnson 1962-4-18 1246 Humboldt Arcata, Mad River County Park Comment
  UC162814  Trifolium eriocephalum var. eriocephalum Joseph P. Tracy 1908-6 2759 Humboldt opposite Buck Mtn; Valley of Van Duzen River 762 Comment
  UC1223460  Trifolium fragiferum Joseph P. Tracy 1933-8-22 12986 Humboldt 1 mi w Loleta Comment
  RSA168898  Trifolium fragiferum Joseph P. Tracy 1933-8-22 12986 Humboldt Not seen elsewhere, moist field near wet slough 1 miles W of Loleta. Comment
  UC1197033  Trifolium fucatum Joseph P. Tracy 1932-5-10 9963 Humboldt near Petrolia (Mattole River); North Coast Ranges 15 Comment
  HSC15124  Trifolium fucatum Francis Winter 1960-4-24 Humboldt Redwood Creek Ranch 381 Comment
  UC418985  Trifolium fucatum H. E. and S. T. Parks May 1930 738 Humboldt vicinity Bridgeville Comment
  UC162777  Trifolium gracilentum J. P. Tracy 1900-6-5 844 Humboldt immediate vicinity Eureka (Bucksport) 0 Comment
  UC16569  Trifolium hybridum Joseph Burtt Davy and Walter C. Blasdale 1899-6-17 5601 Humboldt Arcata Comment
  SBBG3831  Trifolium macraei H. and M. Dearing 1939-5-25 3441 Humboldt near Samoa Comment
  JEPS65951  Trifolium microcephalum Joseph P. Tracy 1932-5-1 9893 Humboldt vicinity Garberville; Northern Coast Ranges 121 Comment
  RSA183525  Trifolium microcephalum D. E. Anderson 1965-5-8 3645 Humboldt About 2 miles north of Willow Creek along road running along east side of Trinity River. Comment
  UC1223356  Trifolium microcephalum Joseph P. Tracy 1939-4-29 16259 1/2 Humboldt Orleans 121 Comment
  HSC15221  Trifolium microcephalum J. P. Tracy 1926-5-2 7429 Humboldt Trinity River near the S Fork Comment
  RSA273375  Trifolium oreganum Thomas W. Nelson, Jane P. Nelson 1976-6-15 2711 Humboldt Along old trail from lookout to Blocksburg 1555 Comment
  UC1223329  Trifolium pratense Joseph P. Tracy 1934-8-6 13558 Humboldt near Blue Lake (along Mad River) 15 Comment
  HSC77397  Trifolium repens C. J. Thomas 1983-5-9 30 Humboldt 23 Comment
  HSC45107  Trifolium subterraneum R. Sutherland 1978-5-12 2 .12578 Humboldt Mckee Flat 288 Comment
  HSC45116  Trifolium variegatum R. Sutherland, R. Sutherland 1978-5-19 13 .19578 Humboldt 134 Comment
  UC1223543  Trifolium variegatum var. pauciflorum Joseph P. Tracy 1933-5-20 12241 Humboldt Petrolia Northern Coast Ranges, Mattole Valley Comment
  SEINET6935462  Trifolium willdenovii Wanda P. Vestal, A. G. Vestal 1937-6-23 s.n. Humboldt Saddle near east end of Bald Hills, southeast of Orick. Comment
  UCD109897  Trifolium willdenovii Joseph P. Tracy 1933-6-24 12615 Humboldt North end of Big Lagoon. Comment
  POM349599  Trifolium wormskioldii J. P. Smith, Thomas W. Nelson 1977-6-30 9207 Humboldt Samoa Peninsula just east of the drag strip. Comment
  RSA249527  Triglochin maritima Robert F. Thorne, Percy C. Everett 1965-8-7 35214 Humboldt Samoa Peninsula: near sea level Comment
  HSC99359  Trillium kurabayashii K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-6-24 8 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  HSC24377  Trillium ovatum J. O. Sawyer 1970-6-24 2278 Humboldt W of Mill Creek Lakes. 1677 Comment
  UC1541274  Trillium ovatum Harold E. Parks 1933-1 Humboldt Trinidad, Spruce Cove Comment
  HSC98910  Trillium ovatum subsp. ovatum Cara Witte 2007-5-31 164 Humboldt Buck Flat. Intersection of National Forest 1 and 5N01. 1547 Comment
  SEINET3821239 Image available Triodanis biflora Harley P. Chandler 1901-6-1 1415 Humboldt Klamath River 427 Comment
  SEINET10459937  Triodanis perfoliata Willis L. Jepson Jepson 1940 Humboldt REDWOOD CREEK Comment
  HSC20854  Triphysaria eriantha subsp. eriantha J. R. Woodside 1963-5-1 21 Humboldt 1.25 mi. N of Fairhaven Comment
  HSC95575  Triphysaria eriantha subsp. eriantha Andrea Pickart 2002-3-29 17 Humboldt Samoa Dunes 0 Comment
  HSC20866  Triphysaria versicolor subsp. faucibarbata Francis Winter 1960-5-6 Humboldt Samoa Peninsula, 6 mi. W of Arcata Comment
  SBBG68601  Triphysaria versicolor subsp. faucibarbata S. W. Hutchinson -Apr-1927 106 Humboldt Humboldt County [no specific locality] 30 Comment
  HSC27022  Triphysaria versicolor subsp. versicolor Brad Klipfel 1972-5-5 1 Humboldt S of Lanphere's barn, Humboldt Bay Comment
  HSC31723  Triphysaria versicolor subsp. versicolor J. P. Smith 1974-5-16 7370 Humboldt Arcata, median strip along Samoa Blvd. near Sunnybrae Comment
  CAS-BOT-BC199625  Trisetum canescens David D. Keck 1948-7-2 6006 Humboldt E. side of Rocky Ridge, E. of Berry's Summit, 4.1 miles W. of Willow Creek, near Boundary of Six Rivers National Forest 457 Comment
  CAS-BOT-BC199629  Trisetum canescens David D. Keck 1948-7-2 6006 Humboldt E. side of Rock Ridge, E. of Berry's Summit, 4.1 miles W. of Willow Creek. Near Boundary of Six Rivers Nat'l Forest 457 Comment
  HSC89902  Trisetum canescens Leonel Arguello 1989-7-22 Humboldt Lanphere-Christensen Dunes Preserve, 3 mi. W of Arcata Comment
  RSA183534  Trisetum canescens H. S. Logsdon 1964-5-10 11 Humboldt 4 miles NE of Orick at Boye's Prairie Comment
  UCD93885  Trisetum canescens R. Tofsrud 1948-9-1 s.n. Humboldt Road between Horse Mt. and Grouse Mt. 1371 Comment
  UCSB13010  Triteleia laxa Muller, Katherine 1954-6-21 Humboldt Olson Creek, 2 mi. E. NE. of Mad River Comment
  HSC13439  Triticum aestivum L. M. Malloy 1965-5-20 30 Humboldt Old county dump, 5 mi. from Arcata on Fickle Hill Rd. Comment
  HSC100450  Troximon heterophyllum Carl C. Marshall May 1887 494 Humboldt Kneeland Prairie. Comment
  SEINET3875748  Tsuga heterophylla K. S. Erdman 1970-6-18 4798 Humboldt Cal-Barrow Road, 3 miles E. of US 101 at boundary of Prairie Creek State Park (redwood National Park).; 0 Comment
  UC615043  Tsuga heterophylla Beryl O. Schreiber 1934-6-5 1133 Humboldt 15 mi e of Blue Lake (road to Redding, wooded slope) Comment
  UCD135133  Tsuga heterophylla Linda M. Barker 1976-6-14 1589 Humboldt Lanphere-Christensen Dunes, coastal forest and dunes 3 miles west of Arcata. Comment
  HSC21409  Typha latifolia W. J. Newton, Jr. 1967-7-30 24 Humboldt N side of Lanphere Rd., 10 yds. from road. Comment
  HSC93497  Typha latifolia Gordon Leppig 1998-6-8 899 Humboldt Arcata Marsh and Wildlife Sanctuary, SW side of pond. 2 Comment
  HSC94100  Ulex europaeus D. M. Hull 1986-2-26 48 Humboldt Corner of Beverly Way and Chapman Ave. Arcata, CA Comment
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Jan 13 2012
  RSA46914  Umbellularia californica Doris K. Kildale 1925-12-27 1447 Humboldt Kneeland. 762 Comment
  SEINET12102546  Umbellularia californica J. P. Tracy 1950-1 18600 Humboldt Vicinity of Carlotta 30 Comment
  SEINET12102554  Umbellularia californica E. H. Graham 1931-1 6960 Humboldt Along highway near Garberville Comment
  SEINET12103378  Umbellularia californica J. P. Tracy 1950-12-10 s.n. Humboldt no further locality Comment
  UC1198133  Urtica dioica subsp. gracilis Joseph P. Tracy 1927-4-24 7948 Humboldt near Alton 60 Comment
  HSC59491  Utricularia macrorhiza M. A. Ericksen 1979-4-24 217 Humboldt Behind Fieldbrook School, in Fieldbrook Comment
  HSC55012  Vaccinium membranaceum G. L. Clifton 1979-7-31 11394 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  RSA134586  Vaccinium ovatum P. C. Everett, E. K. Balls, George B. Everett 1959-10-26 23974 Humboldt 4 mi. se from Honeydew along Old Coast Road to Ettersburg. 457 Comment
  UC1121133  Vaccinium ovatum A. E. Wieslander 1931-5-21 214 Humboldt Kneeland China Flat Quad. Comment
  UC1193356  Vaccinium ovatum K. Cuff 1950-10-9 128 Humboldt 2.5 mi se Honeydew (Quad 28D1) 304 Comment
  UC484083  Vaccinium ovatum Carl B. Wolf 1930-10-24 Humboldt 2 mi below mouth of Salmon River; Klamath River 152 Comment
  UCD118087  Vaccinium ovatum B. L. Kay 1955-6-7 s.n. Humboldt Wagner Ranch, 5 miles southwest Garberville. Comment
  CAS-BOT-BC199405  Vaccinium parvifolium Doris K. Kildale; J. W. Gillespie 1929-6-25 8393 Humboldt Pines Pasture, Eureka Comment
  CAS-BOT-BC199423  Vaccinium parvifolium Doris K. Kildale 1927-5-13 3147 Humboldt Lord Ellis Road between Blue Lake & Bald Mountain Junction Comment
  CHSC27318  Vaccinium parvifolium T. B. Devine 1977-8-20 459 Humboldt Near Kneeland Road ca 1 mi from Kneeland towards Eureka. 548 Comment
  UC154041  Vaccinium parvifolium J. P. Tracy 1907-5-20 2563 Humboldt Immediate vicinity Eureka 0 Comment
  UC615045  Vaccinium parvifolium Beryl O. Schreiber 1934-6-5 1135 Humboldt 15 miles east of Blue Lake road to Redding Comment
  UCR32119  Vaccinium parvifolium David J. Keil 1983-7-2 17329 Humboldt Horse Mountain Summit SW of Willow Creek 1509 Comment
  SJSU2573  Valeriana sitchensis subsp. scouleri H. L. Buckalew 1962-7-2 Humboldt junction of Willow Cr & E Fork Willow Cr on Hwy 299 Comment
  UC602512  Valeriana sitchensis subsp. scouleri Joseph P. Tracy 1924-4-27 6643 Humboldt Willow Creek Canyon; Northern Coast Ranges 609 Comment
  HSC56072  Valeriana sitchensis subsp. sitchensis G. L. Clifton, Griswold 1979-7-31 11741 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa. 1845 Comment
  CAS-BOT-BC76045  Vancouveria hexandra Mrs. H. C. Cantelow 1936-5-17 s.n. Humboldt 4.5 miles east of Orick. Comment
  CAS-BOT-BC76053  Vancouveria hexandra L. R. Abrams 1916-7-21 6150 Humboldt Grizzly Creek. Comment
  HSC33018  Vancouveria hexandra J. D. Ackerman, A. M. Montalvo 1973-7-5 98 Humboldt 1 mi. W of Tish a Tang Creek on Grogan Hill Rd., E of Hoopa 1524 Comment
  HSC3385  Vancouveria hexandra W. Jan Rowe 1966-5-11 40 Humboldt 100 ft. E of HSC campus, Arcata 46 Comment
  RSA438033  Vancouveria planipetala Anstruther Davidson 1918-07 3346 Humboldt Eel River. Comment
  RSA161170  Vancouveria planipetala P. H. Raven, R. Snow 1958-7-20 13631 Humboldt Friday Ridge Road to Grouse Mountain, 10.8 miles southwest of junction with United States Highway 299. Comment
  UC1116238  Velezia rigida Joseph P. Tracy 1947-7-5 17774 Humboldt ridge top one mi w Mud Springs (Trinity Summit); , w of Mud Springs 1158 Comment
  UCD99496  Velezia rigida Joseph P. Tracy 1947-7-5 17774 Humboldt Trinity Summit; local on ridge top one mile west of Mud Springs. Comment
  UC1222526  Veratrum californicum var. californicum Joseph P. Tracy 1950-9-2 19347 Humboldt 2 mi s Field's Landing town (at Still Ranch) 6 Comment
  HSC55608  Veronica americana Walter Overton, Marvin Butler 1979-7-23 9490 Humboldt Near Titlow Hill, close to the town of Willow Creek 1280 Comment
  HSC56222  Veronica americana G. L. Clifton, Terry Griswold 1979-8-2 12254 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  UC1198066  Veronica arvensis J. P. Tracy 1910-5-1 3131 Humboldt immediate vicinity of Eureka 0 Comment
  HSC21205  Veronica peregrina Anonymous 1957-4-27 126 Humboldt 1 mi. W of Honeydew Comment
  HSC34650  Veronica persica A. M. Montalvo 1975-4-10 204 Humboldt Vacant lot bordering HSU campus between Union St. and A St. 15 Comment
  UC1192005  Veronica scutellata Malcolm A. Nobs, S. Galen Smith 1949-8-3 1190 Humboldt at the southern outskirts of Eureka Comment
  HSC99632  Veronica serpyllifolia subsp. humifusa G. L. Clifton, Terry Griswold 1979-7-25 10866 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1784 Comment
  JEPS16812  Veronica serpyllifolia subsp. humifusa Joseph P. Tracy 1935-7-24 14176 Humboldt Trinity Summit, near Ranger Station Trinity Summit 1828 Comment
  HSC73728  Veronica wormskjoldii M. A. Baker 1980-7-22 3098 Humboldt Near Grogan Hole. 1676 Comment
  HSC2102  Vicia americana var. americana Elrid H. Spinas 1948-6-16 54 Humboldt Horse Mtn. Comment
  UC1197467  Vicia americana var. americana Joseph P. Tracy 1914-5-14 4437 Humboldt Fort Seward; Northern Coast Ranges 121 Comment
  UC1197464  Vicia americana var. americana Joseph P. Tracy 1913-7-20 4372 Humboldt slopes between Three Creeks and top of Berry Mountain; Northern Coast Ranges 1066 Comment
  UC1197476  Vicia americana var. americana Joseph P. Tracy 1936-6-21 14996 Humboldt near Booth's Run (Iaqua); Iaqua 609 Comment
  UC303185  Vicia benghalensis Joseph P. Tracy 1924-6-28 6701 Humboldt Hydesville; Northern Coast Ranges 91 Comment
  UC17003  Vicia gigantea Joseph Burtt Davy and Walter C. Blasdale 1899-6-11 5434 Humboldt near Hubbard Station Comment
  HSC33770  Vicia hirsuta Paul Dryden 1975-5-24 202 Humboldt Samoa Dunes, across from the boat landing. Comment
  HSC100544  Vicia sativa Carl C. Marshall Sep 1887 442 Humboldt Salmon Creek. Comment
  HSC77964  Vicia sativa subsp. nigra L. P. Janeway, Paul Wilson 1984-5-25 829 Humboldt N Spit of Humboldt Bay, BLM lands near the Coast Guard Station 5 Comment
  HSC90813  Vicia sativa subsp. nigra Gail Newton 1982-5-5 2531 Humboldt Elk River Wildlife Area, Eureka Comment
  HSC86732  Vicia sativa subsp. nigra D. K. Imper May 1987 Humboldt Near Eureka Comment
  JEPS66196  Vicia tetrasperma Joseph P. Tracy 1916-5-31 4688 Humboldt Stitz Creek Northern Coast Ranges Eel River (along Eel River from South Fork to Scotia) 60 Comment
  RSA170273  Vicia tetrasperma Joseph P. Tracy 1916-5-16 4688 Humboldt Stitz Creek. Along Eel River from South Fork to Scotia. 61 Comment
  CAS-BOT-BC263942  Viola adunca Mrs. H. C. Cantelow 1941-4-26 s.n. Humboldt 12 miles SW of Ferndale, on road to Cape Mendocino Comment
  CAS-BOT-BC263947  Viola adunca L. B. Kildale 1930-5-11 9543 Humboldt Bald Hills near [Tomlinson's?] 792 Comment
  HSC21773  Viola adunca J. Mustain 1963-3-29 3 Humboldt Big Lagoon Park Comment
  RSA23651  Viola adunca Carl B. Wolf 1939-7-7 9518 Humboldt Orick to Weitchpec Road 10 miles from Martin's Ferry. 305 Comment
  HSC98980  Viola adunca var. adunca Cara Witte 2007-6-13 250 Humboldt Near Buck Flat. Along creekbed that parallels 5N01. 1578 Comment
  HSC32130  Viola glabella D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5592 Humboldt Mt. Lassic and two smaller peaks to immediate E 1768 Comment
  HSC48412  Viola glabella Brad Klipfel 1973-6-10 84 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC48741  Viola glabella Brad Klipfel 1973-6-10 66 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  UC1761601  Viola glabella H. E. Parks 1924-8-9 2447 Humboldt Carlotta Comment
  CHSC97987  Viola hallii J. Breton; A. Livingston 2005-6-10 9 Humboldt Coldspring Camp, 7.4 mi. south of Hwy 299 on NF1. 1357 Comment
  UC183756  Viola hallii Joseph P. Tracy 1913-5-4 4046 Humboldt Kneeland Prairie; Northern Coast Ranges 762 Comment
  UC1198452  Viola hallii Eleanor Ethel Tracy 1907-5-1 Humboldt near top of Lawrence Creek Hill; Northern Coast Ranges, Kneeland Prairie 762 Comment
  UC1103558  Viola macloskeyi Joseph P. Tracy 1947-6-26 17744 Humboldt near McKay Camp; South Fork Mountain 1676 Comment
  UC35284  Viola ocellata Chesnut and Drew 1888-7-21 Humboldt South Fork Mountain Comment
  HSC97518  Viola ocellata Frances Reuss Harmon 2001-3-31 14 Humboldt Six Rivers National Forest: Gray Falls Picnic Area, along dirt road heading due S ca. 150 ft past the picnic area loop Comment
  HSC100698  Viola sarmentosa Carl C. Marshall Mar 1886 145 Humboldt Throughout Humboldt County. Comment
  UC1198432  Viola sheltonii Joseph P. Tracy 1942-6-23 17254 Humboldt near Water-dog Lakes (Trinity Summit); Trinity Summit 1828 Comment
  CAS-BOT-BC198759  Vulpia bromoides Ira L. Wiggins 1932-7-25 5897 Humboldt Roadsides and fields near McKinleyville. Comment
  CAS-BOT-BC198761  Vulpia bromoides Harley P. Chandler 1901-5-1 1119 Humboldt Humboldt Bay 30 Comment
  HSC9841  Vulpia bromoides J. W. Johnson 1962-5-9 1350 Humboldt Christenson Farm, Samoa Peninsula. Comment
  UC1607841  Vulpia bromoides H. E. Parks May 1933 4306 Humboldt Trinidad district, Spruce Cove Comment
  UC34061  Vulpia bromoides J. P. Tracy 1900-6-23 858 Humboldt immediate vicinity Eureka 0 Comment
  SEINET200356 Image available Vulpia microstachys var. pauciflora Joseph P. Tracy 1925-7-5 7170 Humboldt Bald Mountain; near High Prairie. 1067 Comment
  UC1145196  Vulpia microstachys var. pauciflora Joseph P. Tracy 1939-4-29 16247 Humboldt 8 mi below Orleans (near Slate Creek, Klamath River); Klamath River 121 Comment
  UC1155009  Vulpia microstachys var. pauciflora Richard Spellenberg 1965-6-14 1122 Humboldt about 2 mi e Kneeland; Kneeland Prairie Comment
  UC525649  Vulpia microstachys var. pauciflora Joseph P. Tracy 1933-6-13 12599 Humboldt near summit on road from Hoopa to Bair's; Hoopa Mountain 1066 Comment
  HSC9928  Vulpia myuros H. E. Parks, S. T. Parks Jun 1937 5897 Humboldt Spruce Cove. Trinidad. 61 Comment
  UCD94427  Vulpia myuros Collector unknown 1923-7-12 26 Humboldt Briceland. Comment
  UCD94899  Vulpia myuros A. H. Murphy 1951-5-15 35 Humboldt Foster Ranch, 3 miles west of Miranda. Comment
  UC1103718  Vulpia myuros var. hirsuta Joseph P. Tracy 1914-5-14 4432 1/2 Humboldt Fort Seward 106 Comment
  UC196967  Vulpia myuros var. hirsuta Joseph P. Tracy 1915-5-23 4640 Humboldt Eureka; Northern Coast Region 0 Comment
  CHSC68557  Whipplea modesta Vernon H. Oswald 1997-4-29 8356 Humboldt Humboldt Bay NWR, Hookton Slough Trail on the levee along the south side of Hookton Slough. On the edge of the trail. 0 Comment
  HSC41845  Whipplea modesta N. G. Sugihara 1977-4-23 14 Humboldt 2.5 mi. S of Shelter Cove Rd., S Fork of Bear Creek at Wailaki Campground 561 Comment
  HSC73870  Wyethia longicaulis Gail Newton 1980-7-14 1462 Humboldt Near Last Chance Ridge. 1219 Comment
  RSA167419  Wyethia longicaulis Joseph P. Tracy 1950-7-1 18942 Humboldt Summit near Clear Lake where the Friday Ridge Road comes to the top of Grouse Mountain Ridge. Comment
  CAS-BOT-BC326977  Wyethia longicaulis Volney Rattan 1881-6-1 s.n. Humboldt North of Mad River Comment
  SDSU11985  Xerophyllum tenax D. F. Howe 1961-8-2 3123 Humboldt 24 miles east of Orick on Bald Mt. road. 914 Comment
  CAS-BOT-BC527079  Xerophyllum tenax Doris K. Kildale; L. B. Kildale 1930-5-11 9530 Humboldt Wire Grass Prairie, Bald Hills 792 Comment
  CDA36451  Xerophyllum tenax CDFA Staff 1978-6-15 Humboldt 0 Comment
  UC154244  Yabea microcarpa Joseph P. Tracy 1908-6 2743 Humboldt nw slope Buck Mountain; Northern Coast Ranges 762 Comment
  UC1198217  Zigadenus fremontii Joseph P. Tracy 1917-6-17 4818 Humboldt bluff back Bucksport (Eureka); Northern Coast Region, Eureka 0 Comment



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