Search Results — 2000 specimen records retrieved (1374 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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A yellow cell in the column headed "?", for records with coordinates, indicates a discrepancy with respect to range as specified in the eFlora. Read more ...
? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  HSC54029  Abies concolor Griswold, Butler 1979-7-12 7209 Humboldt Near Groves Prairie, close to the town of Willow Creek. 1256 Comment
  HSC49356  Abies grandis Thomas W. Nelson, Jane P. Nelson 1979-9-10 5064 Humboldt Along old logging road S of Lundbar Hills. Bulk Collection # 187 49 Comment
  POM160841  Abies grandis Joseph P. Tracy 1919-4-6 5125 Humboldt Around Humboldt Bay, Humboldt Hill. 152 Comment
  SBBG11073  Abies grandis D. E. Breedlove 1961-7-4 658 Humboldt US Hwy 299, 3.1 mi E of the N fork of the Mad River 502 Comment
  HSC67579  Abronia latifolia J. P. Smith 1971-10-6 4946 Humboldt End of Murray Rd. in McKinleyville. Comment
  UC1602146  Abronia latifolia Joseph P. Tracy 1936-6-6 14861 Humboldt Sandy shore near railroad station Eureka 3 Comment
  RSA28775  Abronia umbellata subsp. breviflora H. E. Parks 1941-09 24212 Humboldt Mouth of Little River. Comment
  HSC2785  Acer circinatum D. E. Anderson 1965-5-8 3627 Humboldt 0.6 mi. W of bridge over N Fork of the Mad River along Hwy. 299 Comment
  POM161070  Acer circinatum Joseph P. Tracy 1920-10-24 5403 Humboldt Mad River bottom near Blue Lake 61 Comment
  POM89162  Acer circinatum Joseph P. Tracy 1920-8-1 5346 Humboldt Kneeland Prairie Lawrence Creek 457 Comment
  UC165817  Acer circinatum Joseph P. Tracy 1911-6-4 3223 Humboldt 5 mi from the coast (along Little River); Northern Coast Region, Little River 121 Comment
  UC902127  Acer circinatum Joseph P. Tracy 1932-6-26 17294 Humboldt Valley of South Yager Creek 609 Comment
  RSA46728  Acer glabrum var. torreyi Doris K. Kildale 1938-1 15372 Humboldt Hoopa trip. Comment
  OBI36632  Acer macrophyllum David J. Keil 1983-7-2 17307 Humboldt Ca. 10.5 mi E of jctn with US 101 along SR 299 Comment
  UC205634  Acer macrophyllum Joseph P. Tracy 1920-10-24 5404 Humboldt near Korbel (North Fork of Mad River) Comment
  UC1192145  Achillea millefolium Malcolm A. Nobs and S. Galen Smith 1949-8-3 1189 Humboldt southern outskirts of Eureka Comment
  UCSB30612  Achillea millefolium Edwards, David 1974-7-26 Humboldt At the top of the E. bank of the Mad River, at its junction with Puter Creek, ca. 2 mi. SW. of Korbel 27 Comment
  RSA120839  Achillea millefolium var. californica S. S. Tillett 1956-7-6 624 Humboldt 12.5 miles from Orleans, along Bar Shanty Road. 1174 Comment
  HSC3337  Achlys triphylla J. F. Knezevich 1968-5-21 445 Humboldt 20 mi. E of Arcata on Hwy. 299 at Lord Ellis Summit Comment
  HSC37361  Achlys triphylla Gary S. Lester, Roger L. Yearout, Judith G. Dickson 1974-7-24 493 Humboldt Along Lost Man Creek. 38 Comment
  HSC3330  Achlys triphylla Francis Winter 1960-4-23 Humboldt 1 mi. S of Simpson Creek, Korbel-Maple Creek Rd. 213 Comment
  UC1541542  Achnatherum lettermanii Harold E. Parks July 1934 4926 Humboldt Grouse Mountain 1371 Comment
  UC526665  Achnatherum occidentale subsp. californicum Joseph P. Tracy 1932-7-12 10473 Humboldt Head of Brett Hole Klamath Mountains, Brett Hole 1828 Comment
  HSC38620  Achyrachaena mollis D. E. Anderson, J. P. Smith 1971-6-21 1103 Humboldt 16.2 miles E of Garberville on road to Alderpoint. Comment
  UC581802  Achyrachaena mollis Joseph P. Tracy 1932-6-26 10271 Humboldt Fort Baker Ranch 762 Comment
  BLMAR508  Acmispon brachycarpus Jennifer Wheeler 2009-5-12 508 Humboldt Red Mountain, In serpentine meadow S of School Section Creek 792 Comment
  HSC71443  Acmispon micranthus J. P. Smith 1971-10-9 5047 Humboldt Mad River above the Fish Hatchery. Comment
  HSC64762  Acmispon micranthus Bruce Gordon 1979-6-18 140 Humboldt Redwood National Park, NNE of K & K Rd, about 2.5 mi. S of junction of K & K Rd. and Bald Hills Rd. 707 Comment
  UC502930  Aconitum columbianum Joseph P. Tracy 1932-7-10 10393 Humboldt Trinity Summit, Corral Prairie Klamath Mts., Trinity Summit, Corral Prairie 1524 Comment
  UC668267  Aconitum columbianum Joseph P. Tracy 1937-8-12 15661 Humboldt Snow Camp 1402 Comment
  HSC56001  Aconitum columbianum subsp. viviparum Overton, Butler 1979-7-31 11449 Humboldt Near Water Dog Lakes, close to the town of Hoopa 1830 Comment
  UC502922  Actaea rubra Joseph P. Tracy 1932-7-17 10690 Humboldt Devil's Hole Klamath Mts., Trinity Summit (head) 1828 Comment
  HSC97952  Adenocaulon bicolor Cara Witte 2007-6-21 326 Humboldt Board Camp Mountain. Forest Service Road 4N38. 1430 Comment
  HSC30347  Adiantum aleuticum Dale R. Gradek 1974-5-28 95 Humboldt 0.25 mi. E of Hwy. 101 on Jolly Giant Creek 61 Comment
  HSC952  Adiantum aleuticum C. B. Wolf 1927-8-28 1170 Humboldt On the grade 9 mi. from Willow Creek, Lord Ellis Rd. to Blue Lake Comment
  HSC95886  Adiantum aleuticum Will Ferrand 2002-2-2 23 Humboldt 9 mi. E of intersection of West End Rd. and Warren Creek Rd. 67 Comment
  UC1239781  Adiantum aleuticum Joseph P. Tracy 1926-6-20 7636 Humboldt Horse Mt; Northern Coast Ranges 1463 Comment
  UCR123954  Adiantum aleuticum George K. Helmkamp, E. A. Helmkamp 2001-7-8 6969 Humboldt North Coast, CA Hwy 36, along the Van Duzen River, 19.6 mi east of CA Hwy 101, west of Bar W Road 137 Comment
  CAS-BOT-BC62296  Adiantum aleuticum J. H. Thomas 1949-6-12 903 Humboldt Under bridge on Boyce Creek, near Klamath River (near town of Orleans) Comment
  UC811115  Adiantum jordanii George Neville Jones 1936-3-22 8662 Humboldt s fork Eel River near Garberville Comment
  HSC102183  Agastache urticifolia M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-3 1097 Humboldt Patterson Meadows 1555 Comment
  HSC98730  Agastache urticifolia Cara Witte 2007-7-20 553 Humboldt Board Camp Butte. Forest Serivce Road 4E27. 1502 Comment
  CAS-BOT-BC30382  Ageratina occidentalis Carl B. Wolf 1927-8-27 1157 Humboldt On the Klamath River, 2 mi. below the Salmon River Comment
  HSC34743  Ageratina occidentalis Thomas W. Nelson 1974-7-19 1672 Humboldt McKeown Ranch N of Dinsmore Comment
  HSC57452  Ageratina occidentalis G. L. Clifton, Griswold 1979-7-26 10272 Humboldt Near Salmon Mtn., close to the town of Forks of Salmon 1935 Comment
  UC194430  Ageratina occidentalis P. E. Goddard 1907-7-14 b 128 Humboldt along Van Duzen <River> Van Duzen <River> Comment
  HSC44088  Agoseris grandiflora Thomas W. Nelson, Jane P. Nelson 1977-9-3 3723 Humboldt N of Alder Springs 1555 Comment
  HSC98959  Agoseris grandiflora Cara Witte 2008-7-28 956 Humboldt Spike Buck Mountain. Forest Service Road 5N18. Near intersection with National Forest 1. 1592 Comment
  SEINET202732 Image available Agoseris grandiflora Joseph P. Tracy 1945-7-15 17513 Humboldt Trinty River Valley at Willow Creek. 152 Comment
  UC166791  Agoseris grandiflora var. grandiflora Joseph P. Tracy 1901-8-2 1245 Humboldt near Hydesville; Northern Coast Region 60 Comment
  CAS-BOT-BC29623  Agoseris grandiflora var. grandiflora J. T. Howell 1931-6-16 6714 Humboldt Valley Flat, 5 miles S of Garberville Comment
  UC1239513  Agoseris grandiflora var. grandiflora Mrs. C. M. Wilder 1936-7-1 Humboldt at Jack Kemp's place, sw slope Buck Mt. Buck Mt. 914 Comment
  UC1541538  Agrostis Harold E. Parks May 1933 4301 a Humboldt Spruce Cove Trinidad Comment
  UC187290  Agrostis J. P. Tracy 1900-8-26 926 Humboldt immediate vicinity of Eureka 0 Comment
  CAS-BOT-BC127456  Agrostis densiflora Joseph P. Tracy 1927-6-26 8216 Humboldt Stone Lagoon. 6 Comment
  RSA10025  Agrostis densiflora Joseph P. Tracy 1927-7-17 8271 Humboldt Three Cabins; Chaparral Mountain Comment
  SEINET201009  Agrostis diegoensis Doris Kildale Humboldt Trinity Summit 1829 Comment
  CAS-BOT-BC127290  Agrostis exarata C. L. Hitchcock; C. V. Muhlick 1963-7-14 22909 Humboldt Along Eel River at Fern bridge. Comment
  HSC75270  Agrostis exarata J. O. Sawyer, M. A. Ericksen 1980-8-18 4058 Humboldt Slopes below Mill Creek Lakes, N Trinity Mtn. Research Natural Area 1707 Comment
  UC1103376  Agrostis exarata Joseph P. Tracy 1934-6-23 13252 Humboldt along river near Blue Lake; Mad River 15 Comment
  UC184150  Agrostis exarata Joseph P. Tracy 1912-7-21 3785 Humboldt Alton Northern Coast Region, Alton 30 Comment
  UC526893  Agrostis exarata Joseph P. Tracy 1927-7-17 8285 Humboldt grassy slopes on lower foothills of Chaparral Mountain Northern Coast Ranges (vernal pond) 457 Comment
  UCSC000094  Agrostis exarata Ken Kellman 1969-12-31 s.n. Humboldt Eureka Comment
  LA10251  Agrostis exarata var. exarata H. E. Parks; June 1935 5607 Humboldt Spruce Cove, Trinidad Comment
  CAS-BOT-BC139499  Agrostis hallii Gordon H. True 1965-9-25 2656 Humboldt Klamath River 1.5 mile east of Orleans. 213 Comment
  HSC64757  Agrostis hallii Bruce Gordon 1978-8-4 121 Humboldt Redwood National Park, about 0.15 mi. NW of junction of Bald Hills Rd. and K & K Rd., in Lyon's Prairie. 774 Comment
  RSA129593  Agrostis hallii H. S. Yates 1936-6-18 5737 Humboldt 1 mile NE of Orick 46 Comment
Read comments
Nov 24 2011
  CAS-BOT-BC139128  Agrostis oregonensis Joseph P. Tracy 1930-7-16 8904 Humboldt Northern Coast Ranges. South Fork Mountain. Near McKay Camp. 1676 Comment
  CAS-BOT-BC139132  Agrostis oregonensis Joseph P. Tracy 1934-7-18 13452 Humboldt North Coast Ranges. Grouse Mountain. 1524 Comment
  HSC58760  Agrostis pallens Overton, Butler 1979-7-26 10056 Humboldt Near White Rock Spring, close to the town of Willow Creek 1554 Comment
  SACT000139  Agrostis palustris S. Smith, Malcolm Nobs 1949-8-3 Humboldt Borders of irrigation ditch Comment
  CAS-BOT-BC138634  Agrostis stolonifera John Thomas Howell 1937-7-31 13722 Humboldt 4 miles north of Loleta. Comment
  RSA313196  Agrostis stolonifera Malcolm A. Nobs, S. Galen Smith 1949-8-3 1168 Humboldt 1 mile south of Fields Landing, Eel River valley Comment
  HSC79472  Aira caryophyllea Kenneth Clark 1980-5-10 638 Humboldt Shelter Cove, along access to Dead Man's Gulch 107 Comment
  UC37074  Aira caryophyllea Harley P. Chandler May, 1901 Humboldt Humboldt Bay North Coast Ranges 30 Comment
  CAS-BOT-BC138334  Aira caryophyllea var. caryophyllea David D. Keck 1948-7-1 5972 Humboldt South side of Big Lagoon. Comment
  SJSU16017  Aira praecox John Rawlings 2016-5-19 1801 Humboldt Gold Bluffs Beach 5 Comment
  SEINET199675  Allium amplectens J. P. Tracy 1936-6-17 14975 a Humboldt Little Van Duzen River at hwy crossing 0 Comment
  POM169690  Allium bolanderi H. P. Chandler 1901-06 1434 Humboldt Klamath River. Comment
  UC146211  Allium bolanderi var. mirabile Joseph P. Tracy 1908-6 2771 Humboldt opposite Buck Mountains; Northern Coast Ranges, Valley of Van Duzen River 304 Comment
  HSC38518  Allium falcifolium D. E. Anderson, J. P. Smith 1971-6-18 - 1082 Humboldt Horse Mtn. Comment
  HSC81793  Allium falcifolium Thomas W. Nelson, James Nelson 1980-6-10 5400 Humboldt Along Swayback Ridge 4-wheel drive road, 1.25 mi. S of junction with Forest Service road. 1494 Comment
  CAS-BOT-BC469017  Allium falcifolium Henry M. Pollard 1948-8-4 s.n. Humboldt Orleans Mt. 1676 Comment
  CAS-BOT-BC469020  Allium falcifolium Carl Purdy 1937-6-1 s.n. Humboldt Grouse Mountain Comment
  HSC12536  Allium membranaceum J. Allen DeCou 1899-6-22 263 Humboldt Trail to Trinity Summit Comment
  UC15004  Allium membranaceum Mrs. M. H. Manning 1901-7-14 3 Humboldt trail below Mud Springs; Hupa Comment
  HSC97998  Allium validum Cara Witte 2007-7-11 500 Humboldt Grouse Mountain. Forest Service Road 5N04. Near spring. 1583 Comment
  UC199038  Allophyllum gilioides subsp. violaceum Chesnut and Drew 1888-7-23 Humboldt <Hy-Am-Pum> Comment
  CAS-BOT-BC453426  Allotropa virgata Volney Rattan 1878-1-1 s.n. Humboldt Unspecified Comment
  UC1193076  Alnus rhombifolia R. E. Nelson 1950-8-31 153 Humboldt streamside 3 mi nw Neafus Peak; Quad. 29D1 609 Comment
  HSC31798  Alnus rubra Steve Selva, Roger Jensen 1974-8-27 82 Humboldt Along Hwy. 299, approx. 10 mi. E of Blue Lake Comment
  HSC3392  Alnus rubra Eugene Andreuccetti 1964-4-2 33 Humboldt 3 mi. N of Tish Tang Ranger Station on Hwy. 96 along Trinity River Comment
  RSA24390  Alnus rubra C. B. Wolf 1941-2-22 9917 Humboldt Along Redwood Highway 2.8 miles south of Patricks Point State Park 30 Comment
  UCD110049  Alnus viridis subsp. sinuata Joseph P. Tracy 1947-8-24 17913 Humboldt Near Box Camp. 1524 Comment
  CAS-BOT-BC138014  Alopecurus geniculatus Richard Walter Pohl 1963-6-3 9449 Humboldt Korbel. Comment
  HSC90773  Alopecurus geniculatus Gail Newton 1982-5-31 3565 Humboldt Elk River Wildlife Area, Eureka Comment
  UC1103312  Alopecurus geniculatus Joseph P. Tracy 1933-7-20 12802 Humboldt Arcata <Bottom> North Coast Ranges, Arcata <Bottom> 15 Comment
  UCD55904  Alopecurus geniculatus Joseph P. Tracy 1938-7-15 16063 Humboldt mouth of Elk River, near Eureka. 6 Comment
  SEINET10473459  Ambrosia Mary Susan Taylor 1990-8-22 Taylor 6076 Humboldt Samoa Recreation Area on Samoa Peninsula, Staging Area, Eureka. Coastal scrub in ORV area. Comment
  BLMAR296  Ambrosia chamissonis Jennifer Anthony-Wheeler 2002-6-25 296 Humboldt King range, Growing in dune mat 3 Comment
  UCD128769  Ambrosia chamissonis Linda M. Barker 1976-8-2 1674 Humboldt 3 miles west of Arcata. Comment
  UC582625  Ambrosia chamissonis Joseph P. Tracy 1934-10-21 13688 Humboldt s end, along coast at Dry Lagoon Stone Lagoon 3 Comment
  RSA264507  Ambrosia chamissonis var. chamissonis H. E. Parks 1941-09 24214 Humboldt Mouth of Little River Comment
  RSA47088  Amelanchier pallida Doris K. Kildale 1926-6-27 2225 Humboldt Little Van Duyen River on bridge on Bridgeville Red Bluff road 640 Comment
  UC205671  Ammophila arenaria Joseph P. Tracy 1918-7-28 5087 Humboldt Ocean Beach at Humboldt Bay, Northern Coast Region Comment
  UC545822  Amsinckia menziesii var. menziesii H. E. Parks March, 1933 4282 Humboldt Trinidad Comment
  HSC17824  Anagallis arvensis D. E. Anderson 1961-8-25 1745 Humboldt 1.5 mi. S of Trinidad Comment
  HSC79547  Anagallis arvensis Kenneth Clark 1980-4-18 572 Humboldt 300 yds. E of Dead Man's Gulch; widespread through Shelter Cove 5 Comment
  CAS-BOT-BC45131  Anaphalis margaritacea Alice Eastwood 1923-8-14 12304 Humboldt Samoa Comment
  CAS-BOT-BC45141  Anaphalis margaritacea Carl D. Duncan 1920-9-22 s.n. Humboldt Hoopa Valley Comment
  CHSC27929  Anaphalis margaritacea M. S. Taylor 1975-4-12 466 Humboldt Ca. 2000 yds E of Hwy 101, in Orick, by RR tracks. Comment
  JEPS20544  Anaphalis margaritacea Chesnut and Drew 1888-8-8 Humboldt Arcata Comment
  UC963845  Anaphalis margaritacea H. E. Parks and S. T. Parks 1943-8-1 24237 Humboldt along highway Stone Lagoon Comment
  CAS-BOT-BC45138  Anaphalis margaritacea Huron H. Smith 1911-6-6 3793 Humboldt Vances Camp 19 Comment
  HSC56079  Anemone deltoidea G. L. Clifton, Griswold 1979-7-31 11761 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa. 1845 Comment
  HSC56303  Anemone deltoidea Overton, Butler 1979-8-2 12610 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  HSC63009  Anemone deltoidea M. Dean Griswold Jr. 1979-4-21 24 Humboldt N side of Hwy. 36 Comment
  HSC100609  Anemone grayi Carl C. Marshall Apr 1887 352 Humboldt Humboldt Hill. Comment
  UC1196196  Anemone oregana Joseph P. Tracy 1938-6-13 15899 Humboldt Horse Mtn; in serpentine belt 1432 Comment
  HSC41238  Anemone oregana var. oregana Brad Klipfel 1974-5-27 376 Humboldt Horse Mountain Comment
  HSC79537  Angelica hendersonii Kenneth Clark 1979-7-1 457 Humboldt Dead Man's Gulch 12 Comment
  RSA21584  Angelica hendersonii C. B. Wolf 1937-9-9 9304 Humboldt 2 miles S of Cape Mendocino. 6 Comment
  UC582634  Angelica hendersonii Joseph P. Tracy 1937-8-22 15674 Humboldt Table Bluff 91 Comment
  JEPS16069  Angelica hendersonii W. L. Jepson 1902-8-3 2133 Humboldt Loleta, Expedition from Ukiah to the Hupa Indian Reservation Loleta 60 Comment
  UC1197375  Angelica hendersonii Joseph P. Tracy 1924-9-21 6902 Humboldt toward Bucksport (Northern Coast Ranges, Eureka); Northern Coast Ranges, Eureka 0 Comment
  UC154250  Angelica lucida Joseph P. Tracy 1909-9-19 3087 Humboldt Region about Humboldt Bay (near Samoa, Northern Coast Region); Northern Coast Region 0 Comment
  UC642266  Angelica tomentosa Joseph P. Tracy 1939-8-16 16410 Humboldt Horse Mountain 1432 Comment
  SD109165  Angelica tomentosa var. hendersonii Joseph M. DiTomaso 1980-7-29 1800 Humboldt Elkshead, ca. 2 miles north of Trinidad Comment
  CAS-BOT-BC271451  Anisocarpus madioides Henry M. Pollard 1948-7-23 s.n. Humboldt Perch Creek canyon, near Orleans Comment
  SEINET200721 Image available Antennaria rosea J. P. Tracy 1939-8-6 16397 Humboldt Shore of Big Lagoon 3 Comment
  HSC4670  Anthemis cotula Lincoln Constance 1934-5-27 694 Humboldt S Fork of Eel River, S end of Dyerville Bridge 46 Comment
  CAS-BOT-BC137779  Anthoxanthum aristatum K. L. Chambers 1984-6-16 5150 Humboldt Bald Hills Road, 7.0 miles past Lady Bird Johnson Grove, Redwood National Park, east of Orick. Comment
  CAS-BOT-BC289127  Anthoxanthum occidentale Mabel Wiesendanger 1928-4-7 907 Humboldt Lane's Redwood Flat, Redwood Highway Comment
  HSC10096  Anthoxanthum occidentale C. R. Phillips 1964-2-29 Humboldt E of Blue Lake on dirt road turning off Hwy 299 Comment
  HSC39951  Anthoxanthum occidentale Linda M. Barker 1976-2-22 1312 Humboldt 3 mi. W of Arcata Comment
  HSC40404  Anthoxanthum occidentale Linda M. Barker 1976-4-13 1387 Humboldt 3 mi. W of Arcata Comment
  UCD85497  Anthoxanthum occidentale H. S. Yates 1936-6-22 5850 Humboldt 4 miles NE of Bald Mtn. Comment
  HSC38313  Anthoxanthum odoratum Peter Sorensen 1976-6-2 Humboldt North Spit Comment
  UCD56273  Anthoxanthum odoratum Harley P. Chandler 1901-5-1 1106 Humboldt North Coast Ranges, Humboldt Bay. 30 Comment
  SBBG83248  Antirrhinum vexillocalyculatum subsp. breweri D. M. Thompson 1983-6-26 354 Humboldt Kneeland Rd, 9.1 mi S of jct with Mtn View Rd Comment
  RSA425834  Antirrhinum vexillocalyculatum subsp. breweri H. M. Pollard 1948-7-27 s.n. Humboldt Near mouth of Red Cap Creek. Comment
  UC902211  Antirrhinum vexillocalyculatum subsp. breweri Joseph P. Tracy 1949-8-11 18468 Humboldt 2 to 6 mi s Grouse Mt.; Kinsey Ridge 1280 Comment
  UC153989  Apocynum androsaemifolium Joseph P. Tracy July, 1908 2786 Humboldt ridge between Van Duzen and Mad Rivers near Low Gap; Northern Coast Ranges, Humboldt and Trinity Co. 914 Comment
  CAS-BOT-BC392165  Aquilegia formosa Elizabeth Parsons Hawver 1915-6-1 s.n. Humboldt Carlotta Comment
  HSC31555  Aquilegia formosa Glenn McGourty 1974-5-11 45 Humboldt Along Maple Creek Rd. Comment
  HSC44500  Aquilegia formosa Brad Klipfel 1973-4-28 14 Humboldt Along Canyon Creek, SW of Korbel Comment
  HSC57633  Arabis breweri var. breweri G. L. Clifton, Griswold 1979-7-25 10787 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1814 Comment
  HSC39042  Arabis breweri var. breweri Thomas W. Nelson, Jane P. Nelson 1976-5-31 2659 Humboldt County line, S of meadow along 5E27 just N of its junction with 1S07 1524 Comment
  HSC57436  Arabis glabra G. L. Clifton, Griswold 1979-7-26 10231 Humboldt Near Salmon Mtn., close to the town of Forks of Salmon 1981 Comment
  UC492237  Arabis glabra Joseph P. Tracy 1932-5-1 9860 Humboldt Redway Northern Coast Ranges 152 Comment
  HSC98619  Arabis glabra var. glabra Cara Witte 2007-5-31 154 Humboldt Along National Forest Rte. 1, near Kinsey Ridge, 1.5 miles north of intersection with 4N09 1299 Comment
  JEPS53191  Arabis suffrutescens var. horizontalis Joseph P. Tracy 1933-7-25 12878 Humboldt North Coast Ranges, Grouse Mt. 1524 Comment
  UC314647  Arbutus menziesii Joseph P. Tracy 1927-4-10 7895 Humboldt Trinity River Valley near the South Fork; Northern Coast Ranges, Trinity River Valley 182 Comment
  UC1196876  Arctostaphylos Joseph P. Tracy 1934-3-11 13157 Humboldt French Camp Ridge 1066 Comment
  UC585902  Arctostaphylos Joseph P. Tracy 1931-3-1 9283 Humboldt Miranda South Fork of Eel River 121 Comment
  UC585948  Arctostaphylos Joseph P. Tracy 1936-8-2 15075 Humboldt French Camp Ridge 1066 Comment
  JEPS38981  Arctostaphylos bakeri subsp. bakeri Joseph P. Tracy 1935-6-23 13991 Humboldt French Camp Ridge Northern Coast Ranges 1066 Comment
Read comments
Mar 7 2007
  CAS-BOT-BC25212  Arctostaphylos canescens subsp. canescens L. B. Kildale 1931-8-9 s.n. Humboldt Three Creeks on Willow Creek Road. Comment
  CAS-BOT-BC23746  Arctostaphylos columbiana Doris K. Kildale 1926-6-18 2396 Humboldt Gold Bluffs on coast. Comment
  CAS-BOT-BC23753  Arctostaphylos columbiana Doris K. Kildale 1927-1-30 2899 Humboldt Big Lagoon, coastal terrace Comment
  CAS-BOT-BC23766  Arctostaphylos columbiana Joseph P. Tracy 1923-2-18 6142 Humboldt Patrick's Point 30 Comment
  CAS-BOT-BC23788  Arctostaphylos columbiana A. A. Heller 1937-6-12 15918 Humboldt Along the road paralelling the ocean at Bishop Pine Lodge, 3 miles north of Trinidad. Comment
  CAS-BOT-BC23792  Arctostaphylos columbiana C. Hart Merriam 1920-8-31 s.n. Humboldt Coast Mts. between Shelter Cove and Kenny. Comment
  JEPS38968  Arctostaphylos columbiana Joseph P. Tracy 1936-8-24 15170 Humboldt 6 mi se Arcata; Fickle Hill 609 Comment
  RSA622692  Arctostaphylos columbiana Jon E. Keeley, John Sawyer 1996-10-12 27674 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
  UCD50745  Arctostaphylos columbiana Roman Gankin 1965-8-5 543 A Humboldt Top of Chimisal Mountain west of Wailaki Recreation Area, Bureau of Land Management. Comment
  CAS-BOT-BC23736  Arctostaphylos columbiana C. Hart Merriam 1921-7-7 s.n. Humboldt Ridges west of the Van Duzen River. Comment
  UCD50659  Arctostaphylos columbiana var. tracyi Roman Gankin 1965-8-4 541 Humboldt On USAL Road, 23 miles north of junction with State Route 1 and 2.7 miles south of junction of Four Corners. Comment
Read comments
Jul 8 2015
  UCD51037  Arctostaphylos glandulosa Joseph M. DiTomaso 1976-3-28 348 Humboldt West side of Lord Ellis summit on State Highway 299 between Arcata and Willow Creek. 762 Comment
  UCSB11336  Arctostaphylos glandulosa Zinke, P. 1950-10-9 Humboldt King Peak 1219 Comment
  SEINET11984882  Arctostaphylos glandulosa Unknown 1965-1 545 Humboldt 6.5 mi W on Kings Mountain Rd, Pacific Range Wilderness Area Comment
  HSC98571  Arctostaphylos glandulosa subsp. glandulosa Cara Witte 2008-8-5 987 Humboldt Buck Flat. 1/4 mile south of intersection of National Forest 1 and Forest Service Road 5N01. 1569 Comment
  CHSC63764  Arctostaphylos manzanita Walter Knight; Irja Knight 1988-9-5 6362 Humboldt Bald Hill Road about 21.5 miles from US 101 en route to Hoopa. 929 Comment
  RSA633024  Arctostaphylos manzanita Jon E. Keeley 1996-10-13 27809 Humboldt Salyer Rest Area, east of Salyer, east of Willow Creek on Highway 299. 200 Comment
  CAS-BOT-BC38833  Arctostaphylos manzanita subsp. manzanita Doris K. Kildale 1930-5-12 9561 Humboldt McClellan Hill near Bridgeville 609 Comment
  UC1173703  Arctostaphylos manzanita subsp. manzanita Joseph P. Tracy 1939-4-29 16263 Humboldt Orleans 121 Comment
  UC32687  Arctostaphylos manzanita subsp. manzanita Chesnut and Drew 1888-8-1 Humboldt Grouse Creek Comment
  CHSC85573  Arctostaphylos nevadensis L. P. Janeway 2003-7-30 7949 Humboldt High North Coast Ranges. Along Friday Ridge Road, at south end of Friday Ridge, 1.0 km (air) east-southeast of Friday Camp. Roadside. 1359 Comment
  CAS-BOT-BC40067  Arctostaphylos nevadensis subsp. knightii Walter Knight; Irja Knight 1988-9-5 6360 Humboldt 21 miles up Bald Hill road from US-101 en route to Hoopa. 975 Comment
  CAS-BOT-BC40069  Arctostaphylos nevadensis subsp. knightii Doris K. Kildale 1926-8-22 2574 Humboldt Bald Hills near Tomlinson's on Orick-Martin's Ferry road. Comment
  UCD52853  Arctostaphylos nevadensis subsp. knightii Roman Gankin; W. R. Hildreth 1967-10-26 1174 Humboldt 21.4 miles east of U.S. 101 on Bald Hills Road from Orick; French Camp Ridge. Comment
  CAS-BOT-BC46627  Arctostaphylos patula L. B. Kildale 1930-8-10 10533 Humboldt Snow Camp. Head of Redood Creek. Comment
  CAS-BOT-BC46629  Arctostaphylos patula L. B. Kildale 1930-8-3 10486 Humboldt Chaparral Mt. at Bug Creek. Comment
  HSC7703  Arctostaphylos patula J. Pursell 1964-11-1 1112 Humboldt 3 mi. S of Hoopa on Hwy. 96 Comment
  HSC7704  Arctostaphylos patula J. Pursell 1964-10-17 10171 Humboldt Hoopa in Hoopa Valley Comment
  UC1198668  Arctostaphylos patula Joseph P. Tracy 1942-6-23 17263 Humboldt open ridges near Water-dog Lakes; Trinity Summit 1828 Comment
  CAS-BOT-BC43979  Arctostaphylos uva-ursi Greg de Nevers 2001-4-18 12251 Humboldt Lanphere-Christenson dunes, near Arcata. 9 Comment
  CAS-BOT-BC43993  Arctostaphylos uva-ursi Robert F. Thorne; P. Everett 1965-8-5 35156 Humboldt Samoa Dunes 3 Comment
  HSC77903  Arctostaphylos uva-ursi L. P. Janeway 1984-5-16 799 Humboldt N Spit of Humboldt Bay, on the W side of Samoa Road ca. 1/4 mi. NW of the boat ramp 5 Comment
  SEINET3106998  Arctostaphylos uva-ursi Steve Selva, Roger Jensen 1974-8-28 91 Humboldt Approx 5 mi S of Arcata on the sand dunes of the Samoa Peninsula. Comment
  UC1073330  Arctostaphylos uva-ursi George B. Rossbach 1955-6-10 380 Humboldt sandy point off Eureka; Fairhaven Comment
  RSA286310  Arctostaphylos uva-ursi var. coactilis R. F. Thorne 1974-7-29 45082 Humboldt Samoa Dunes. Comment
  CAS-BOT-BC467182  Arenaria serpyllifolia var. serpyllifolia Henry M. Pollard 1946-8-13 s.n. Humboldt Klamath River, near Orleans Comment
  JEPS20979  Arnica cordifolia Joseph P. Tracy 1935-7-30 14372 Humboldt s of Red Cap Lake; Salmon Summit 2011 Comment
  SEINET11837502  Arnica cordifolia H. P. Chandler 1901-1 1400 Humboldt Klamath River 244 Comment
  UC582488  Arnica cordifolia Joseph P. Tracy 1935-7-30 14372 Humboldt top of ridge s of Red Cap Lake; Salmon Summit 2011 Comment
  CAS-BOT-BC82431  Arnica discoidea Doris K. Kildale 1927-7-3 3641 Humboldt Willow Creek Flat 152 Comment
  HSC47778  Arrhenatherum elatius Michael A. Watkins 1978-6-10 6 Humboldt Arcata, E side of the 7th Street overpass to Hwy. 101 Comment
  HSC8986  Arrhenatherum elatius W. F. Cartwright 1965-5-20 79 Humboldt 5 mi. S of Arcata on Old Arcata Road Comment
  SBBG62497  Artemisia douglasiana H. E. Parks -May-1940 24178 Humboldt Little River Comment
  RSA167208  Artemisia douglasiana Joseph P. Tracy 1947-8-24 17892 Humboldt Trinity Summit- Meadow at Box Camp 1463 Comment
  RSA15563  Artemisia pycnocephala C. B. Wolf 1927-8-29 1206 Humboldt Devils' Gate, S of Cape Mendocino. Comment
  CAS-BOT-BC97245  Artemisia suksdorfii W. R. Dudley 1899-1 s.n. Humboldt Trinidad Head Comment
  CAS-BOT-BC453345  Aruncus dioicus var. vulgaris Doris K. Kildale 1930-6-1 9747 Humboldt Klamath River at Weitchpec Comment
  UC6180  Asarum caudatum J. Mello Feb 1897 Humboldt Eureka Comment
  CAS-BOT-BC400536  Asarum caudatum H. E. Parks 1931-3-24 0918 Humboldt Near Orick Comment
  CAS-BOT-BC400540  Asarum caudatum C. C. Harris; S. K. Harris 1936-6-14 652 Humboldt On Yager Road from Carlotta 457 Comment
  HSC63149  Asarum caudatum M. A. Baker 1979-6-28 941 Humboldt Comment
  RSA296721  Asarum caudatum Clark L. Miller 1979-5-13 1 -129 Humboldt East of Hwy 101 from Seawood Drive. Comment
  SEINET8189642 Image available Asarum caudatum H. E. Parks 1931-3-24 0918 Humboldt Near Orick Comment
  SEINET8588609  Asarum caudatum J. D. Freeman, R. F. Freeman 1967-5-7 584 Humboldt Moist low bluff just W of Cal. Hwy 36 and just N of Carlotta. Comment
  HSC41326  Asarum hartwegii Brad Klipfel 1974-8-2 514 Humboldt Horse Mtn. Comment
  HSC38092  Asclepias cordifolia Thomas W. Nelson, James Nelson 1976-5-30 2613 Humboldt McKeown Ranch, N of Dinsmore. Comment
  RSA21097  Aspidotis densa C. B. Wolf 1937-6-14 8825 Humboldt North Coast Range, Kneeland Prairie 823 Comment
  RSA686386  Aspidotis densa Henry M. Pollard 1948-7-31 s.n. Humboldt Orleans Mountain Trail 915 Comment
  POM161487  Aster brickellioides Joseph P. Tracy 1918-9-18 5223 Humboldt Trinity Summit. Comment
  CDA30679  Aster chilensis M. K. Beyers, I. Shepardson 2009-9-13 252 Humboldt Off the eastern side of State Route 254 (Avenue of the Giants), along the Eel river, on and along a steep-cut bank that has been cemented over here, probably to prevent erosion. 0 Comment
  RSA33737  Aster chilensis F. W. Peirson 1923-7-11 3882 Humboldt 7 miles north of Arcata. Comment
  NY5297  Astragalus agnicidus H. Tosten 1931-6-7 s.n. Humboldt Near Bear Buttes, 4 mi S of Miranda. Local on Tosten and Pierce Ranch. Comment
  UC302115  Astragalus rattanii var. rattanii Joseph P. Tracy 1926-5-15 7486 Humboldt Kneeland Prairie Northern Coast Ranges, Kneeland Prairie 762 Comment
  HSC54570  Athyrium filix-femina var. cyclosorum Overton, Butler 1979-7-24 9598 Humboldt Near Titlow Hill, close to the town of Willow Cr. 1250 Comment
  HSC55184  Athyrium filix-femina var. cyclosorum G. L. Clifton, Terry Griswold 1979-8-2 12228 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  HSC35625  Atriplex leucophylla Thomas W. Nelson, James Nelson 1975-8-5 2138 Humboldt Along S spit of Humboldt Bay ca. 1 mi. N of Table Bluff. Comment
  SEINET946131  Baccharis douglasii S. P. McLaughlin, Damien Ravetta 1991-1 6553 Humboldt Northwest end of Humboldt Bay, along Hwy 255 S of Arcata at Vance Road; Near jct. Hwy 101 and Elk River Road Comment
  JEPS21274  Baccharis glutinosa Joseph P. Tracy 1938-8-21 16128 Humboldt Little River 9 Comment
  JEPS32397  Baccharis glutinosa W. L. Jepson 1936-8-11 17867 Humboldt spot on mountainside, Philipsville South Fork Eel River Comment
  POM41974  Baccharis pilularis Marcus E. Jones 1924-4-26 s.n. Humboldt Eureka. Comment
  CDA10381  Baccharis pilularis subsp. consanguinea T. C. Fuller 1961-9-27 7042 Humboldt Highway 101, 2.5 miles north of Trinidad. 0 Comment
  HSC39056  Barbarea orthoceras Thomas W. Nelson, Jane P. Nelson 1976-5-31 2642 Humboldt N of junction of FS Rds. 1S07 and 5E27 along 5E27 1524 Comment
  UC184173  Barbarea orthoceras Joseph P. Tracy 1913-6-14 4119 Humboldt Dinsmore's Ranch; in Valley of Van Duzen River opposite Buck Mountain 762 Comment
  UC492247  Barbarea orthoceras Joseph P. Tracy 1927-7-24 8292 Humboldt Mattole Valley 152 Comment
  UC562693  Barbarea orthoceras Joseph P. Tracy 1935-7-25 14239 Humboldt lower end Brett Hole; Trinity Summit 1584 Comment
  HSC5189  Bellis perennis John A. Dubois 1962-5-23 20 Humboldt 20 miles East of 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
  UCD129547  Bellis perennis Suzanne E. May 1967-4-15 34 Humboldt on State Highway 36, 1 mile west of Bridgeville. 182 Comment
  HSC97596  Berberis aquifolium var. aquifolium Steven Lee 2004-4-26 31 Humboldt Horse Mtn., 5 mi. up Titlow Hill Rd. from Hwy. 299 Comment
  UCD39982  Berberis aquifolium var. repens Rodney Gale Myatt 1971-9-21 1186 Humboldt Near Orleans, northeast of Hoopa Reservation, and along Klamath River. 426 Comment
  HSC76280  Berberis nervosa Denis Kearns 1981-7-8 146 Humboldt Near Bluff Creek 622 Comment
  CAS-BOT-BC75810  Berberis pinnata Harley P. Chandler 1901-6-1 1277 Humboldt North Coast Ranges. Hupa Indian Reservation. 1097 Comment
  JEPS58656  Betula occidentalis Chesnut and Drew 1888-7-28 Humboldt Grouse Creek Comment
  HSC48749  Bistorta bistortoides Brad Klipfel 1973-6-10 75 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC55017  Bistorta bistortoides Overton, Butler 1979-7-31 11415 Humboldt Near Water Dog Lakes, close to the town of Hoopa 1830 Comment
  SBBG25588  Blechnum spicant E. R. Blakley 1966-8-17 6792 Humboldt Little Crk, Prairie Crk St Park, ca. 10 mi N of Orick 64 Comment
  HSC91603  Blechnum spicant E. Mackey 1986-10-24 Humboldt Patrick's Point State Park, by trail to Agate Beach Comment
  HSC48731  Boschniakia strobilacea J. Pageau, T. Jimerson, W. Wisler, A. Regalis 1979-6-13 521 Humboldt Off Forest Rd. 10N05, SE slope of Hopkins Butte 1037 Comment
  HSC102034  Botrychium multifidum M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-13 937 Humboldt Patterson Meadows 1555 Comment
  CAS-BOT-BC420265  Boykinia occidentalis Doris K. Kildale 1928-7-29 5928 Humboldt Bear River at Capetown 15 Comment
  SDSU9503  Boykinia occidentalis Harvey 1938-8-13 2263 Humboldt Near Arcata. 85 Comment
  CAS-BOT-BC420264  Boykinia occidentalis L. B. Kildale 1930-6-1 9746 Humboldt Klamath River at Weitchpec Comment
  CDA30214  Brassica nigra M. K. Beyers, I. Shepardson 2009-9-13 243 Humboldt In dry portion of the western side of the Eel River, near the base of the entrance of an inlet creek, that runs underneath State Route 254 (Avenue of the Giants) and Highway 101 here. 0 Comment
  HSC6581  Brassica rapa Francis Winter 1960-5-14 Humboldt Samoa Peninsula, 6 mi. W of Arcata Comment
  CAS-BOT-BC145429  Briza maxima Joseph P. Tracy 1930-7-6 8848 Humboldt Iaqua. 762 Comment
  HSC69631  Briza maxima R. Kalal 1980-6-3 28 Humboldt 0.25 mi. N of Hwy. 299 at Essex turnoff 15 Comment
  SEINET10835828  Briza maxima Botany 1985-6-1 BOTANY s.n. Humboldt Gray's falls campground off hwy 299. Found in a sunny, open disturbed site Along the road at the entrance to the campground 241 Comment
  HSC9092  Briza minor R. Spellenberg 1964-6-15 406 Humboldt 0.5 mi. S of Humboldt Hill exit, 5 mi. S of Eureka Comment
  HSC100548  Brodiaea capitata Carl C. Marshall 1885-1 4 Humboldt Table Bluff. Comment
  SEINET200767  Brodiaea elegans subsp. elegans Joseph P. Tracy 1936-6-10 14925 Humboldt South Fork of Trinity River mountain slopes west of its mouth 305 Comment
  UC303037  Brodiaea elegans subsp. elegans Joseph P. Tracy 1926-6-27 7695 Humboldt Horse Mt. Pass on Trinity Highway North Coast Ranges, Horse Mountain (grassy slopes) 883 Comment
  HSC3016  Brodiaea terrestris subsp. terrestris T. M. Mingo May 1965 Humboldt 100 ft. N of parking area at College Cove Comment
  CAS-BOT-BC149567  Bromus carinatus var. carinatus Joseph P. Tracy 1932-7-12 10449 Humboldt Klamath Mountains. Trinity Summit. At Corral Prairie. 1524 Comment
  HSC97612  Bromus carinatus var. carinatus Cara Witte 2007-6-4 198 Humboldt Cold Spring. 0.5 mile S of Titlow Hill. 1386 Comment
  UC552685  Bromus carinatus var. carinatus Joseph P. Tracy 1934-7-18 13423 Humboldt North Coast Ranges, Grouse Mountain Grouse Mountain; North Coast Ranges, Grouse Mountain 1524 Comment
  HSC26297  Bromus carinatus var. marginatus T. O. Osborne 1970-9-16 43 Humboldt Blank Rock, 0.25 mi. W Trinidad Light. Comment
  UC526931  Bromus commutatus Joseph P. Tracy 1933-6-9 12534 Humboldt North Coast Ranges, on Eel River, Shively Shively; North Coast Ranges, Eel River, Shively 30 Comment
  CAS-BOT-BC162447  Bromus laevipes L. R. Abrams 1918-6-16 7155 Humboldt Willow Creek. Comment
  HSC70478  Bromus laevipes Gail Newton 1980-7-20 1634 Humboldt Near Bell Swamps 1426 Comment
  UC60194  Bromus secalinus Rob. Smalley 1901-8-20 Humboldt Blocksburg Comment
  CAS-BOT-BC161606  Bromus sterilis Joseph P. Tracy 1935-6-23 13980 Humboldt French Camp Ridge. 1066 Comment
  SEINET200633 Image available Bromus sterilis Joseph P. Tracy 1921-5-30 5493 Humboldt Kneeland Prairie. Comment
  UC552678  Bromus sterilis Joseph P. Tracy 1935-6-23 13980 Humboldt Northern Coast Ranges, French Camp Ridge French Camp Ridge; Northern Coast Ranges, French Camp Ridge 1066 Comment
  CAS-BOT-BC185517  Bromus vulgaris W. R. Dudley 1899-6-1 s.n. Humboldt Bull Creek and Eel River. Comment
  CAS-BOT-BC185520  Bromus vulgaris A. A. Heller 1923-7-10 13789 Humboldt At a state redwood camp between Scotia and Pepperwood. Comment
  HSC39983  Cakile maritima Linda M. Barker 1976-9-3 1694 Humboldt Lanphere-Christensen Dunes, 3 mi. W of Arcata. Comment
  HSC6607  Cakile maritima S. J. Hawks 1965-3-19 11 Humboldt 0.5 mi. W of Arcata Airport Comment
  UC1103289  Calamagrostis canadensis Joseph P. Tracy 1935-7-27 14290 Humboldt McKay Prairie Trinity Summit (along creek) 1584 Comment
  BLMAR12  Calamagrostis foliosa Brad Barr June, 1982 12 Humboldt King range, slide area above smith cabin in steep slopes Comment
  HSC97775  Calamagrostis foliosa C. Gillevan, C. Sander 2003-8-13 330 Humboldt Cliffs above Randal Creek, Cooksie Creek, and Gitchel Creek, in the King Range Area 9 Comment
  UC1145052  Calamagrostis foliosa Joseph P. Tracy 1938-6-17 15967 A Humboldt near Panther Gap (on road between Mattole and Bull Creek) 822 Comment
  UC1146639  Calamagrostis foliosa Freed W. Hoffman 1946-5-19 1728 Humboldt Mattole River Comment
  HSC76541  Calamagrostis koelerioides Denis Kearns 1981-7-6 85 Humboldt Near Mosquito Lake 1256 Comment
  CAS-BOT-BC185178  Calamagrostis nutkaensis Ira L. Wiggins 1932-7-25 5898 Humboldt Roadsides near McKenleyville. Comment
  CAS-BOT-BC185183  Calamagrostis nutkaensis David D. Keck 1948-7-1 5976 Humboldt Northeast end of Big Lagood. Comment
  POM203700  Calamagrostis nutkaensis I. L. Wiggins 1932-7-25 5898 Humboldt Roadside near McKinleyville. Comment
  UC1198378  Calandrinia ciliata Joseph P. Tracy 1909-5-30 2979 Humboldt along railroad in Ryan's Slough; Northern Coast Region, Region about Humboldt Bay 0 Comment
  UC1103695  Callitriche heterophylla var. bolanderi Joseph P. Tracy 1939-7-9 16346 Humboldt Snow Camp 1402 Comment
  UC183600  Callitriche heterophylla var. bolanderi Joseph P. Tracy 1913-4-13 4038 Humboldt Ryan's Slough Northern Coast Region, Humboldt Bay Region (on Arcata road) 0 Comment
  CAS-BOT-BC80390  Calocedrus decurrens Doris K. Kildale 1926-9-5 2610 Humboldt Lasseck's Peaks - at Goat Camp 1661 Comment
  HSC58323  Calocedrus decurrens Overton, Butler 1979-8-2 12620 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  HSC72926  Calocedrus decurrens R. York 1980-5-23 619 Humboldt Near Buck Mtn. 1524 Comment
  HSC98927  Calocedrus decurrens C. Witte 2008-10-18 1053 Humboldt Forest Service Road 5N04. 1/2 mile south of intersection with National Forest 1. 1623 Comment
  HSC102081  Calochortus coeruleus M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 983 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  HSC48760  Calochortus coeruleus Brad Klipfel 1973-6-10 74 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  UCD139501  Calochortus coeruleus K. Esau 1934-5-8 s.n. Humboldt above Blocksburg. 609 Comment
  SEINET4169987  Calochortus pulchellus Unknown 1948-6-13 18050 Humboldt Harris 610 Comment
  CAS-BOT-BC494365  Calochortus tolmiei H. C. Cantelow 1941-4-26 3949 Humboldt Rd. to Cape Mendocimo 12 mi. S.W. of Ferndale. Comment
  UC198648  Calochortus tolmiei Joseph P. Tracy 1917-5-30 4813 Humboldt w of Dows Prairie; Northern Coast Ranges 15 Comment
  HSC82398  Caltha leptosepala Thomas W. Nelson 1979-7-11 5016 Humboldt N Trinity Mtn. and ridge to E. 1829 Comment
  CDA10558  Calycadenia ciliosa E. C. Whitney 1960-9-1 Humboldt 1/2 mile north of Pearch Creek on State Highway 96. 0 Comment
  POM261031  Calycadenia ciliosa Joseph P. Tracy 1938-8-14 16117 Humboldt South Fork of the Trinity River: mountain slopes west of its mouth. 305 Comment
  CAS-BOT-BC273318  Calycadenia fremontii Joseph P. Tracy 1938-8-14 16117 Humboldt South Fork of Trinity River 304 Comment
  CAS-BOT-BC275366  Calycadenia truncata var. truncata Doris K. Kildale 1925-7-4 982 Humboldt Redwood Creek at [Bern?'s] Comment
  RSA381907  Calypso bulbosa Pearl Ryan 1917-6-1 s.n Humboldt Hoopa Comment
  RSA259585  Calypso bulbosa J. D. Ackerman 1976-4-27 754 Humboldt 10 Mi. E of Blue Lake on rd. to Maple Creek. Comment
  UC162602  Camassia quamash Joseph P. Tracy 1911-7-7 3388 Humboldt 3 mi nw of junction of Willow Creek with Trinity River (and near Beebe's Ranch); Northern Coast Ranges 914 Comment
  UC421786  Camassia quamash P. E. Goddard 1906-6 691 Humboldt Lasseck Peak Comment
  HSC16442  Camissonia cheiranthifolia J. W. Johnson 1961-8-17 1044 Humboldt Arcata, W.M. Lanphere Farm, Samoa Peninsula. Comment
  HSC46958  Camissonia cheiranthifolia J. P. Smith, Thomas W. Nelson 1977-6-30 9202 Humboldt Samoa Peninsula just E of the drag strip 6 Comment
  CDA18242  Camissoniopsis cheiranthifolia G. D. Barbe, T. C. Fuller 1974-6-19 1880 Humboldt North Coast Ranges; Mad River mouth, beach S of river, at end of Iversen Lane, Tyee City. 30 Comment
  UC741172  Camissoniopsis cheiranthifolia subsp. cheiranthifolia C. C. and S. K. Harris, Clarence Crane Jr. 1939-8-23 970 Humboldt Samoa Comment
  UC168956  Campanula prenanthoides Joseph P. Tracy 1911-7-4 3286 Humboldt near Willow Creek (hill slopes at w side of river); Northern Coast Ranges, Trinity River 243 Comment
  UC416596  Campanula prenanthoides P. E. Goddard 1906-6 686 Humboldt Blocksburg Comment
  SEINET10462968  Campanula prenanthoides James P. Smith 1977-7-3 Smith, Jr. 9236 Humboldt Six Rivers National Forest; on the road to Onion Lake, 4.7 miles from it junction with State Route 36. T10N R4E Sec. 11 610 Comment
  SEINET10463130  Campanula prenanthoides Mcgregor 1921-8-17 MCGREGOR s.n. Humboldt ABANDONED ROAD GRADE, ORICK, "PLANTS OF REQUA" Comment
  SEINET10463745  Campanula scouleri Newton 1981-7-24 Newton 2300 Humboldt Iaqua Buttes quadrangle; near Chaparral Mountain, forest openings. 1433 Comment
  SEINET10463753  Campanula scouleri Wolf 1934-7-2 WOLF 5854 Humboldt 2 miles from Bald Mountain on road to Korbel 762 Comment
  SEINET10463754  Campanula scouleri Baker 1979-6-29 Baker 956 Humboldt Hopkin's Creek. T9N R5E Sec.3 760 Comment
  SEINET10463756  Campanula scouleri Chesnut 1888-6-19 CHESNUT s.n. Humboldt Pilot Ridge Comment
  HSC89442  Capsella bursa-pastoris P. A. Daly 1986-1-20 40 Humboldt Trinidad Head, along trail 61 Comment
  CAS-BOT-BC37428  Cardamine californica John Thomas Howell 1954-4-24 29152 Humboldt Bull Creek Flat. Comment
  HSC6691  Cardamine californica D. E. Anderson 1962-3-31 1965 Humboldt Along new Hwy. 101, W side of Freshwater Lagoon Comment
  UC519693  Cardamine californica Victor Duran 1933-5-11 3405 Humboldt near Bridgeville (Van Duzen River); , near Bridgeville Comment
  RSA0034559  Cardamine californica var. integrifolia H. E. Parks, Joseph P. Tracy 1931-3-26 916 Humboldt Lower Van Duzen River. 61 Comment
  JEPS79886  Cardamine nuttallii var. covilleana Joseph P. Tracy 1927-6-12 8129 Humboldt Horse Mountain Northern Coast Ranges, Horse Mountain 1524 Comment
  HSC64134  Cardamine oligosperma J. P. Smith, J. O. Sawyer 1973-5-12 6692 Humboldt 6.1 mi. from Redwood Creek on Hoopa Rd. Comment
  HSC90227  Cardamine oligosperma L. Watson, J. Meninga Mar 1991 13 Humboldt Near Manila, Mad River slough and dunes, SW edge of parking lot. Comment
  UC1199205  Cardamine oligosperma Joseph P. Tracy 1933-5-18 12189 Humboldt near Blue Lake; along Mad River, near Blue Lake 15 Comment
  UC673286  Cardamine oligosperma Lincoln Constance and Reed C. Rollins 1942-5-11 2871 Humboldt three mi e East Fork Willow Creek; North Coast Ranges, e of East Fork Willow Creek Comment
  HSC100460  Cardamine paucisecta Carl C. Marshall Mar 1886 154 Humboldt Everywhere. Comment
  CHSC48060  Carex L. P. Janeway 1984-6-17 847 Humboldt Drainage along cutbank of Titlow Hill Rd at turn to Horse Mtn. 1420 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-BC18009  Carex arcta Joseph Prince Tracy 1934-7-13 13389 Humboldt Dow's Prairie. 60 Comment
  UC562277  Carex bolanderi Joseph P. Tracy 1935-7-23 14162 Humboldt Trinity Summit, lower end of Brett Hole 1584 Comment
  CAS-BOT-BC34013  Carex brevicaulis Joseph Prince Tracy 1939-4-27 16228 Humboldt Mouth of Little River. 9 Comment
  RSA337439  Carex buxbaumii Robert F. Thorne, Percy C. Everett 1965-8-7 35197 Humboldt Big Lagoon, south end. 2 Comment
  UC1103602  Carex concinnoides Joseph P. Tracy 1927-6-12 8145 Humboldt Horse Mountain 1432 Comment
  SEINET7556710 Image available Carex densa Andrew L. Hipp 1999-5-31 458 Humboldt Alder Point, Alder Pt Rd ca 5 mi W of Alder Pt. 503 Comment
  UC562255  Carex densa Joseph P. Tracy 1936-6-3 14848 Humboldt Willow Creek Trinity River Valley 152 Comment
  CAS-BOT-BC34973  Carex densa Joseph Prince Tracy 1936-6-3 14847 Humboldt Trinity River Valley, at Willow Creek. 152 Comment
  HSC96492  Carex echinata subsp. phyllomanica Gordon Leppig 1998-6-8 798 Humboldt Big Lagoon Bog, Big Lagoon County Park 3 Comment
  CHSC98332  Carex feta Thomas W. Nelson; Jane P. Nelson 1982-7-11 7115 Humboldt North Coast Ranges. Along road from Hindley's cabin on McKeown's ranch to Anderson's ford at Mad River. T02N R05E S28 and 29. Comment
  SEINET7558590 Image available Carex feta Alice Eastwood, John Thomas Howell 1937-6-22 4743 Humboldt Near Blocksburg. Comment
  JEPS80027  Carex globosa Joseph P. Tracy 1936-5-22 7507 Humboldt Prairie Creek Northern Coast Ranges, Prairie Creek 152 Comment
  CAS-BOT-BC146591  Carex gynodynama H. D. Ripley; R. C. Barneby 1945-6-16 6812 Humboldt 2.5 miles N. of Miranda Comment
  UC562719  Carex hassei H. E. Parks and Joseph P. Tracy 1931-5-9 9401 Humboldt vicinity Trinidad; Bishop Pine Lodge 60 Comment
  HSC48358  Carex hendersonii D. H. Norris May 1970 12460 Humboldt Fringes of Freshwater Lagoon, S of Orick Comment
  CAS-BOT-BC31262  Carex lenticularis var. impressa Joseph Prince Tracy 1932-7-14 10554 Humboldt Trinity Summit, Corral Prairie, in wet meadow. 1584 Comment
  HSC102201  Carex leptopoda M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-4 1115 Humboldt Along trail (abandoned Road 6E74) from Andy's Camp to Patterson Meadows 1563 Comment
  HSC102227  Carex multicostata M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-4 1148 Humboldt Along trail (abandoned Road 6E74) from Andy's Camp to Patterson Meadows 1563 Comment
  UC562669  Carex multicostata Joseph P. Tracy 1927-7-4 8233 Humboldt Iaqua North Coast Ranges 609 Comment
  HSC44075  Carex multicostata Thomas W. Nelson, Jane P. Nelson 1977-7-1 2932 Humboldt W of Mount Lassic (Signal Peak) 1677 Comment
  UC709322  Carex multicostata Joseph P. Tracy 1939-7-9 16316 Humboldt 1 mi n Murphy Meadows; Bald Mt. 914 Comment
  HSC103353  Carex nervina Thomas W. Nelson, Jane Nelson 1987-6-11 8604 Humboldt Box Spring at Box Camp; along trail to North Trinity Mountain. 1524 Comment
  HSC48135  Carex nudata D. H. Norris 1971-7-17 19598 Humboldt Along Redwood House Rd., 4 mi. W of intersection with Kneeland-Bridgeville Rd. Comment
  UC202482  Carex nudata J. P. Tracy 1903-5-22 1885 Humboldt Alder Point, Cahto Creek 152 Comment
  UC562448  Carex nudata Joseph P. Tracy 1935-7-21 14120 Humboldt along river at Willow Creek Trinity River Valley 152 Comment
  UC249734  Carex obnupta Joseph P. Tracy 1923-9-2 6541 Humboldt McClellan Mt. Northern Coast Ranges 914 Comment
  POM160309  Carex ovalis Joseph P. Tracy 1926-6-20 7631 Humboldt Horse Mountain. 1463 Comment
  UC1115802  Carex ovalis Joseph P. Tracy 1939-7-9 16315 Humboldt 1 mi n Murphy Meadows (a mile or so from type locality); Bald Mt. 914 Comment
  CAS-BOT-BC119243  Carex pachystachya Joseph Prince Tracy 1939-7-9 16342 Humboldt Snow Camp 1402 Comment
  UC1103100  Carex pachystachya Joseph P. Tracy 1935-6-23 13983 Humboldt French Camp Ridge 1066 Comment
  UC562661  Carex pachystachya Joseph P. Tracy 1935-6-8 13938 Humboldt Eureka Northern Coast Ranges 0 Comment
  HSC98951  Carex pachystachya Cara Witte 2008-7-11 878 Humboldt Spike Buck Mountain. Forest Service Road 5N18. 0.5 mi. from intersection with National Forest 1. 1589 Comment
  SEINET3827283  Carex pachystachya Joseph P. Tracy 1938-1 16083 Humboldt In shade. 30 Comment
  BLMAR70  Carex pansa Jennifer Anthony-Wheeler 1994-5-18 70 Humboldt Samoa/manilla dunes, growing intermittently in wet area in the samoa dunes rec. area 6 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
  SEINET4290241 Image available Carex subbracteata Unknown 2009-1 24500 Humboldt Outer North Coast Range (NCoRO), above Route 299, 0.7 road miles W of Berry Summit. Comment
  CAS-BOT-BC116676  Carex subfusca Joseph Prince Tracy 1934-7-18 13413 Humboldt Horse Mountain. 1371 Comment
  HSC102154  Carex subfusca M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-3 1062 Humboldt Patterson Meadows 1555 Comment
  HSC48739  Carex subfusca Brad Klipfel 1973-6-10 64 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  CAS-BOT-BC115570  Carex tumulicola Alice Eastwood; John Thomas Howell 1937-6-23 4848 Humboldt Kneeland Comment
  UC585639  Carex tumulicola Joseph P. Tracy 1937-5-17 15295 Humboldt near Willow Creek; Trinity River Valley 152 Comment
  CAS-BOT-BC115536  Carex unilateralis Joseph Prince Tracy 1938-7-5 16007 Humboldt Carlotta. Wet place in open flat by old Strong's District School House, 5 mi E of town. 45 Comment
  CAS-BOT-BC115540  Carex unilateralis Joseph Prince Tracy 1930-6-15 8756 Humboldt Bordering a pond, Dobbyn Creek 152 Comment
  UC1152074  Carex unilateralis Joseph P. Tracy 1948-6-13 18034 Humboldt Larrabee Creek Road, halfway between Bridgeville and Blocksburg; Larrabee Valley 731 Comment
  UC197252  Carex utriculata Joseph P. Tracy 1914-7-4 4534 Humboldt High Prairie Northern Coast Ranges, Bald Mountain 1066 Comment
  UC562331  Carex vesicaria Joseph P. Tracy 1934-8-29 13622 Humboldt McKay Camp Northern Coast Ranges, South Fork Mountain 1676 Comment
  UC1103615  Carex vesicaria var. major Joseph P. Tracy 1932-8-21 10368 Humboldt lower w foothills Chaparral Mountain (Three Cabins); North Coast Ranges 457 Comment
  UC162563  Castilleja Joseph P. Tracy 1911-5-30 3199 Humboldt Eureka; Northern Coast Region 0 Comment
  JEPS25792  Castilleja affinis subsp. litoralis L. R. Heckard 1960-8-23 1210 Humboldt about 0.5 mi s Dry Lagoon State Park (near Orick) 152 Comment
  JEPS25802  Castilleja affinis subsp. litoralis L. R. Heckard 1960-8-31 1222 Humboldt Trinidad Head, near lighthouse Trinidad Head Comment
  UC902223  Castilleja affinis subsp. litoralis Joseph P. Tracy 1947-5-24 17692 Humboldt Big Lagoon 152 Comment
  HSC90430  Castilleja ambigua subsp. humboldtiensis Jean Hanson 1980-6-22 97 Humboldt Indian (Gunther) Island, Humboldt Bay, city of Eureka: W side of dike on NW side of island. Comment
  JEPS26223  Castilleja ambigua subsp. humboldtiensis Joseph P. Tracy 1909-9-19 3100 Humboldt Samoa North Coast Region, Humboldt Bay Region 0 Comment
  UC1222835  Castilleja applegatei subsp. pinetorum Joseph P. Tracy 1950-7-2 18974 Humboldt 1 mi s Grizzly Camp (Trinity Summit); Trinity Summit Comment
  HSC35027  Castilleja attenuata Thomas W. Nelson, James Nelson 1975-5-24 1847 Humboldt McKeown Ranch, N of Dinsmore. Comment
  HSC72570  Castilleja densiflora J. P. Smith, J. O. Sawyer 1976-5-2 8623 Humboldt 3.7 mi. N of junction with Hwy. 299 on Hwy. 96 61 Comment
  CHSC95387  Castilleja exserta C. Sander 2005-8-16 CA 330 -81 Humboldt Ecoregion 14. Humboldt County. Manila Dunes ACEC. 3 Comment
  HSC76048  Castilleja miniata Overton, Butler 1979-8-2 12544 Humboldt Near Bret Hole, close to the town of Hoopa 1554 Comment
  UC582475  Castilleja pruinosa Joseph P. Tracy 1926-6-27 7676 Humboldt Horse Mountain; North Coast Ranges 1432 Comment
  HSC98020  Castilleja pruinosa Cara Witte 2007-7-11 513 Humboldt National Forest 1. Approximately 1 mile south of intersection with 5N01. Near Spike Buck Mountain. 1591 Comment
  UC902258  Castilleja rubicundula subsp. lithospermoides Joseph P. Tracy 1943-5-23 17425 Humboldt e of Redwood Creek (on Trinity Highway); Berry's Mt. 487 Comment
  HSC55626  Ceanothus cordulatus Overton, Butler 1979-7-24 9605 Humboldt Near Titlow Hill, close to the town of Willow Creek 1250 Comment
  HSC37598  Ceanothus foliosus var. foliosus R. Sutherland 1975-7-4 0 .4775 Humboldt 640 Comment
  UC1052835  Ceanothus incanus W. L. Colwell 1955-5-5 23 Humboldt North of Windbigler River Quad. 29-A-2 Comment
  HSC18291  Ceanothus integerrimus L. D. Napier 1962-5-13 4 Humboldt 10 mi W of Junction City near Hwy. 299 457 Comment
  JEPS103741  Ceanothus integerrimus D. Wilken with E. Painter 2003-7-16 16151 Humboldt St Hwy 96 between Muddy and Weitchpec crks, just E of Weitchpec 70 Comment
  UC1070740  Ceanothus integerrimus A. E. Wieslander 1931-5-19 202 Humboldt Near Orleans Hoopa quad., Klammath Forest Comment
  UC275290  Ceanothus integerrimus Joseph P. Tracy 1924-7-29 6737 Humboldt Mountain slopes along rd between Three Creeks and mouth of Willow Creek Northern Coast Ranges 1005 Comment
  UC33626  Ceanothus integerrimus Chesnut and Drew 1888-7-25 Humboldt Comment
  BLMAR174  Ceanothus oliganthus subsp. sorediatus Donald Hazlett 1994-6-7 174 Humboldt King range, Tallus slope Near horse Mt. road 670 Comment
  HSC37604  Ceanothus oliganthus var. sorediatus R. Sutherland 1975-7-11 6 .11775 Humboldt Along county rd. 259 Comment
  CAS-BOT-BC51211  Ceanothus parryi Carl B. Wolf 1941-7-27 11086 Humboldt N. Coast Ranges, 5.8 mi. W. Maple Creek on Rd. Freshwater 609 Comment
  CAS-BOT-BC51218  Ceanothus parryi C. Hart Merriam 1920-8-30 s.n. Humboldt Garberville Comment
  HSC36681  Ceanothus parryi R. Sutherland 1975-4-22 8 .22475 Humboldt E of China Creek at county rd. 207 Comment
  UC249584  Ceanothus parryi Joseph P. Tracy 1921-6-12 5823 Humboldt Butler Valley Road near Kneelans Prairie 457 Comment
  HSC18375  Ceanothus pumilus P. J. Zinke 1950-8-24 156 Humboldt Samuels Elk Ridge Ranch, 8 mi. W of Philipsville 701 Comment
  HSC43228  Ceanothus pumilus R. Sutherland 1976-4-25 3 .25476 Humboldt 622 Comment
  SEINET201060  Ceanothus pumilus J. P. Tracy 1946-5-4 17526 Humboldt Willow Creek Canyon along Trinity Highway 610 Comment
  CAS-BOT-BC52217  Ceanothus thyrsiflorus Doris K. Kildale 1926-3-20 1626 Humboldt Liscom Hill, Lower Mad River 30 Comment
  CAS-BOT-BC52219  Ceanothus thyrsiflorus Doris K. Kildale 1926-6-18 2399 Humboldt Gold Bluffs Comment
  CAS-BOT-BC52994  Ceanothus thyrsiflorus C. Hart Merriam 1920-8-29 s.n. Humboldt Lower Eel River between Dyerville and Pepperwood Comment
  CAS-BOT-BC52999  Ceanothus thyrsiflorus Carl B. Wolf 1941-7-28 11091 Humboldt 1 1/2 mi. N. Loleta along Redwood Highway 22 Comment
  RSA46912  Ceanothus thyrsiflorus Doris K. Kildale 1926-6-28 2183 Humboldt Bluffs above Big Lagoon Comment
  UC1071396  Ceanothus thyrsiflorus A. E. Wieslander 1931-5-22 220 Humboldt near Briceland; Briceland Quad. Comment
  UC170229  Ceanothus thyrsiflorus Joseph Burtt Davy and Walter C. Blasdale 1899-6-18 5623 Humboldt near Korbel (Bald Mt.); North Coast Ranges, Bald Mt. Comment
  SD51272  Ceanothus velutinus D. F. Howe 1961-8-2 Humboldt 2.7 miles east of Orick on Bald Mt. road 762 Comment
  RSA46890  Ceanothus velutinus var. laevigatus Doris K. Kildale 1926-4-25 1812 Humboldt Hoopa Mt. Comment
  UC1199120  Centaurea X moncktonii Joseph P. Tracy 1933-8-22 12973 Humboldt at Eureka Eureka 60 Comment
  CAS-BOT-BC272107  Centaurea cyanus Doris K. Kildale 1925-6-27 758 Humboldt Yager Creek, near mouth Comment
  CDA39219  Centaurea maculosa Weylan Shaw 2013-8-2 PDR# 120 P06003643 Humboldt Vicinity of Blue Lake, near the Mad River. Comment
  CDA7305  Centaurea nigra E. C. Whitney 1968-9-6 Humboldt Holmes Flat. Rutledge property. 0 Comment
  HSC61725  Centaurea solstitialis Ruby Van Deventer 1963-7-1 Humboldt Along the Klamath River at Pecwan 198 Comment
  RSA69417  Centaurium muehlenbergii F. W. Peirson 1923-7-10 3803 Humboldt Garberville. Comment
  UC1198634  Centaurium muehlenbergii Joseph P. Tracy 1935-5-25 13870 Humboldt Fort Seward 106 Comment
  RSA431135  Centaurium muehlenbergii Lyman Benson 1928-7-12 392 Humboldt Weott Ranger Station, South Fork of Eel River; Seaward North Coast Mt. Range. 61 Comment
  UC154177  Centunculus minimus Harley P. Chandler May, 1901 1180 Humboldt North Coast Ranges, Humboldt Bay Humboldt Bay; North Coast Ranges, Humboldt Bay 30 Comment
  BLMAR202  Cephalanthera austiniae Jennifer Anthony-Wheeler 1996-7-9 202 Humboldt Pilot ridge. 1280 Comment
  HSC45053  Cerastium arvense R. Sutherland 1978-4-24 11 .24478 Humboldt Kinsey Ridge, gravel slide of road cut 323 Comment
  HSC79360  Cerastium arvense Kenneth Clark 1980-4-18 599 Humboldt Above Dead Man's gulch 175 Comment
  UCD97989  Cerastium arvense subsp. strictum W. L. Jepson 1902-6-19 1883 Humboldt Harris to Ft. Seward Ranch Ridge. 1066 Comment
  UC161007  Cerastium fontanum subsp. vulgare Joseph P. Tracy 1907-5-20 2561 Humboldt at Eureka Northern Coast Region, Eureka 0 Comment
  HSC4112  Cerastium glomeratum Jack Rockwell 1962-4-5 31 Humboldt N bank of Van Duzen River, E of Hwy. 101 9 Comment
  CAS-BOT-BC179507  Cercis occidentalis C. B. Wolf 1931-8-31 2380 Humboldt Gravel slopes on west side of South Fork of Trinity River, 1 mile above its mouth. The Sandy Bar Swimming Hole 243 Comment
  RSA2940  Cercis occidentalis Carl B. Wolf 1931-8-31 2380 Humboldt West side of South fork of Trinity River, 1 mi. above its mouth. Comment
  UC1198736  Cercocarpus betuloides var. betuloides Joseph P. Tracy 1903-5-23 1904 Humboldt along Eel River, at Alder Point Eel River; Northern Coast Ranges, , Alder Point 152 Comment
  UC582766  Chaenactis douglasii var. douglasii Joseph P. Tracy 1935-7-30 14357 Humboldt Salmon Summit 1767 Comment
  CAS-BOT-BC284539  Chaenactis glabriuscula var. heterocarpha Volney Rattan 1886-6-1 s.n. Humboldt Ukiah Comment
  HSC1193  Chamaecyparis lawsoniana J. C. Reppas 1963-3-2 50 Humboldt 820 Fickle Hill Rd. Comment
  POM161038  Chamaecyparis lawsoniana Joseph P. Tracy 1926-6-27 7672 Humboldt Horse Mountain 1463 Comment
  UCSB12070  Chamaecyparis lawsoniana Howe, J. 1938-3-30 Humboldt Humboldt County Comment
  HSC55282  Chamaesyce serpyllifolia Overton, Butler 1979-8-2 12709 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  UC275332  Chamaesyce serpyllifolia Joseph P. Tracy 1923-9-16 6555 Humboldt near South Fork; Northern Coast Ranges, Trinity River Valley 182 Comment
  HSC23490  Chamerion angustifolium subsp. circumvagum R. A. Vanbianchi 1971-9-10 82 Humboldt Along Fieldbrook Rd., 1/2 mi. from Jct. with old Hwy. 299 Comment
  HSC55122  Chamerion angustifolium subsp. circumvagum G. L. Clifton, Griswold 1979-8-1 11922 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1692 Comment
  UC1197014  Chamerion angustifolium subsp. circumvagum Joseph P. Tracy 1946-7-28 17625 Humboldt head of Willow Creek Willow Creek Canyon (along Trinity Hwy) 762 Comment
  HSC98042  Chamomilla suaveolens Cara Witte 2007-7-17 533 Humboldt Intersection of 6N01B and National Forest 1. 1427 Comment
  RSA54128  Cheilanthes gracillima Henry M. Pollard 1946-8-28 s.n. Humboldt Near summit of Orleans Mountain 1829 Comment
  UC1299765  Cheilanthes gracillima Freed W. Hoffman 1949-7-15 3008 Humboldt e slope Mule slide (Mt Lassic Group a little s of Blue Ridge) Comment
  HSC40250  Chenopodium album Linda M. Barker 1976-6-22 1629 Humboldt 3 mi. W of Arcata Comment
  HSC58197  Chenopodium album G. L. Clifton, Griswold 1979-8-2 12296 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  UC1225780  Chenopodium album Joseph P. Tracy 1948-9-5 18203 Humboldt Grizzly Camp Trinity Summit, Little Hors-Linto Creek 1371 Comment
  UCD98277  Chenopodium macrospermum Malcolm A. Nobs; S. Galen Smith 1949-8-11 1340 Humboldt eastern shore of Stone Lagoon. Comment
  CAS-BOT-BC452228  Chimaphila umbellata Volney Rattan no date on label; presented in 1903 s.n. Humboldt Mad River Comment
  HSC102198  Chimaphila umbellata M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-4 1112 Humboldt Along trail (abandoned Road 6E74) from Andy's Camp to Patterson Meadows 1563 Comment
  UC1197665  Chlorogalum pomeridianum var. pomeridianum Joseph P. Tracy 1923-9-16 6559 Humboldt on the Trinity Hwy Northern Coast Ranges, Horse Mt. Pass 883 Comment
  CAS-BOT-BC36486  Chrysolepis chrysophylla Joseph P. Tracy 1940-8-25 16715 Humboldt Bald Mountain 975 Comment
  HSC31653  Chrysolepis chrysophylla Timothy B. Devine 1974-5-4 319 Humboldt Junction of Hwy. 299 and Titlow Hill Rd., E facing slope 875 Comment
  HSC74452  Chrysolepis chrysophylla Gail Newton 1980-8-10 2002 Humboldt Near Blake Mtn. 1798 Comment
  UC1196374  Chrysolepis chrysophylla var. chrysophylla Joseph P. Tracy 1913-7-13 4357 Humboldt Patrick's Point; Northern Coast Ranges 30 Comment
  OBI14344  Chrysolepis chrysophylla var. minor Carl B. Wolf 1937-9-13 9338 Humboldt North Coast range, summit of Grouse Mt Comment
  CAS-BOT-BC420346  Chrysosplenium glechomifolium V. Rattan 1879-6-1 27 Humboldt Long Prarie Creek Comment
  JEPS156  Cicuta douglasii W. L. Jepson 1936-8-17 17930 Humboldt near Arcata (s of Salmon Creek, Mad River); Mad River Comment
  JEPS15745  Cicuta douglasii Joseph P. Tracy 1925-7-5 7179 Humboldt near High Prairie (on Bald Mountain); Northern Coast Ranges, Bald Mountain 1066 Comment
  UC154047  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
  HSC56141  Circaea alpina subsp. pacifica G. L. Clifton, Griswold 1979-8-1 11966 Humboldt Near Mill Creek Lakes, close to the town of Hoopa 1707 Comment
  HSC99470  Circaea alpina subsp. pacifica K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-14 124 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  CAS-BOT-BC284402  Cirsium arvense Alice Eastwood 1923-8-14 12317 Humboldt Samoa Comment
  SD113204  Cirsium arvense Darley F. Howe 1959-8-4 2800 Humboldt 78.5 miles west of Weavervilleon. Comment
  CDA1113  Cirsium brevistylum T. R. Haig, T. C. Fuller 1959-6-12 2791 Humboldt 5 mi. N/ Richardson Grove. 0 Comment
  JEPS59288  Cirsium occidentale var. candidissimum W. L. Jepson 1927-7-3 12371 Humboldt near Leggett Valley; South Fork Eel River 365 Comment
  OBI56358  Cirsium occidentale var. venustum B. Villegas 1998-8-5 s.n. Humboldt North Coast Ranges. Nr berry Summit on Titlow Hill Rd, 3.9 mi S of hwy 299 Comment
  UC1222856  Clarkia amoena Joseph P. Tracy 1950-6-18 18846 Humboldt hills between ocean and Petrolia; Domingo Hill Comment
  HSC63486  Clarkia amoena subsp. huntiana M. A. Baker 1977-6-6 380 Humboldt Along Hwy. 96, Hoopa Indian Res. Comment
  CAS-BOT-BC164179  Clarkia concinna S. K. Harris; J. P. Tracy 1936-6-10 3265 Humboldt West of the South Fork of the Trinity River near its mouth 640 Comment
  UC1198506  Clarkia concinna subsp. concinna Joseph P. Tracy 1911-7-11 3512 Humboldt Supply Creek Northern Coast Ranges, Hoopa Valley 304 Comment
  UC1196983  Clarkia purpurea subsp. quadrivulnera Joseph P. Tracy 1912-7-4 3730 Humboldt near Hydesville; Northern Coast Region 60 Comment
  UC1196980  Clarkia purpurea subsp. quadrivulnera Joseph P. Tracy 1914-6-14 4498 Humboldt near Hydesville; Northern Coast Ranges, Yager Creek 60 Comment
  UC144095  Clarkia purpurea subsp. quadrivulnera Joseph P. Tracy July, 1908 2762 Humboldt near Low Gap (ridge between Van Duzen and Mad Rivers, Humboldt and Trinity Counties); Northern Coast Ranges 914 Comment
  JEPS43563  Clarkia purpurea subsp. viminea W. L. Jepson 1902-7-4 1982 Humboldt beneath The Maul Oaks; Hupa Valley Comment
  HSC17755  Claytonia exigua subsp. exigua D. E. Anderson 1963-5-19 2467 Humboldt About 1 mi. S of Kneeland school Comment
  HSC98784  Claytonia lanceolata Cara Witte 2008-6-2 663 Humboldt National Forest 1. 2 miles south of intersection with Forest Service Road 5N09. 1588 Comment
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Sep 23 2019
  UC198591  Claytonia perfoliata subsp. perfoliata Joseph P. Tracy 1916-4-30 4682 Humboldt Table Bluff Northern Coast Ranges, Humboldt Bay (around Humboldt Bay) 152 Comment
  UCD100846  Claytonia rubra subsp. depressa Linda M. Barker 1976-2-22 1318 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  CAS-BOT-BC443891  Claytonia sibirica Mrytle Paulson 1918-4-28 s.n. Humboldt Eureka Comment
  HSC54677  Claytonia sibirica Overton, Butler 1979-7-26 9928 Humboldt Near Willow Creek, E Fork, close to the town of Willow Creek 1326 Comment
  UC162715  Claytonia sibirica Mrs. M. H. Manning Sep 1901 Humboldt near Hupa Comment
  UC162974  Claytonia sibirica Joseph P. Tracy 1907-5-1 2557 Humboldt Eureka; Northern Coast Region 0 Comment
  UC412615  Claytonia sibirica Mrs. M. H. Manning Humboldt near Hupa Comment
  HSC45492  Claytonia sibirica Maralyn O'Meara 1972-6-8 103 Humboldt Along Bald Hills Rd., 18 mi. from junction with Hwy. 101 Comment
  HSC99019  Claytonia sibirica C. Witte 2007-5-18 35 Humboldt Along National Forest 1. Approximately 1 mile north of intersection with 5N09. 1456 Comment
  CAS-BOT-BC92594  Clematis ligusticifolia Henry M. Pollard 1948-7-23 s.n. Humboldt Near Orleans. Comment
  HSC57030  Clintonia uniflora Overton, Butler 1979-7-24 9654 Humboldt Near Friday Camp, close to the town of Willow Creek. 1250 Comment
  UC1196766  Collinsia grandiflora Joseph P. Tracy 1933-6-13 12572 Humboldt w Hoopa (near summit of Hoopa Mtn on rd from Hoopa to Bair's); Hoopa Mtn 1066 Comment
  UC582462  Collinsia grandiflora Joseph P. Tracy 1930-6-21 8781 Humboldt Larrabee Valley; North Coast Ranges; Larrabee Valley 701 Comment
  HSC73765  Collinsia greenei Gail Newton 1980-7-11 1317 Humboldt Near Red Mtn. 1341 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
  UC1196749  Collinsia heterophylla Joseph P. Tracy 1948-6-13 18049 Humboldt near Harris 609 Comment
  UC1222824  Collinsia heterophylla Joseph P. Tracy 1950-6-15 18812 Humboldt at Huestis Rock on ne side of Ridge (Mail Ridge Trip) Huestis Rock 822 Comment
  HSC101977  Collinsia linearis M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-12 874 Humboldt Patterson Meadows 1566 Comment
  UC582457  Collinsia rattanii Joseph P. Tracy 1925-5-20 7032 1/2 Humboldt Northern Coast Ranges, Laribee Valley Laribee Valley; Northern Coast Ranges, Laribee Valley 701 Comment
  JEPS26358  Collinsia sparsiflora var. sparsiflora Joseph P. Tracy 1932-5-10 9932 Humboldt Bear River Ridge; North Coast Ranges; Bear River Ridge 609 Comment
  UC427878  Collinsia sparsiflora var. sparsiflora H. E. Parks and J. P. Tracy 1930-5-25 792 Humboldt Larabee Valley 792 Comment
  HSC100664  Collinsia tinctoria Carl C. Marshall May 1887 418 Humboldt Spruce Grove region. 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
  HSC99400  Collomia heterophylla K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-6-28 49 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  HSC16921  Collomia heterophylla D. E. Anderson 1965-5-15 3699 Humboldt 5 mi. N of Hoopa on Bald Hills Rd. 198 Comment
  UC1197846  Collomia heterophylla Joseph P. Tracy 1906-5-6 2442 1/2 Humboldt near Hydesville; Northern Coast Region, Wolverton Gulch 60 Comment
  HSC102590  Collomia tracyi M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-28 1577 Humboldt Slopes above Bret Hole and below trail 6E18, 1.5 km SSW of Trinity Summit. 1778 Comment
  HSC45406  Collomia tracyi Thomas W. Nelson, Jane P. Nelson 1977-7-4 3609 Humboldt Along road N from Alder Springs 1524 Comment
  HSC55318  Collomia tracyi Griswold, Butler 1979-7-10 7105 Humboldt Near Board Camp Mtn., close to the town of Willow Creek. 1350 Comment
  UC1197861  Collomia tracyi Joseph P. Tracy 1930-6-23 9130 Humboldt on hillside of disintegrated rock Northern Coast Ranges, Horse Mountain 1432 Comment
  CAS-BOT-BC157349  Comarum palustre Carl B. Wolf 1927-8-22 775 Humboldt Big Lagoon Comment
  UC1197344  Conioselinum pacificum Joseph P. Tracy 1913-8-31 4388 Humboldt near Indianola (s end of Humboldt Bay); Northern Coast Region, Humboldt Bay Region 0 Comment
  HSC38916  Conium maculatum J. P. Smith 1973-5-26 6794 Humboldt Scotia Bluffs along the Eel River near Rio Dell Comment
  HSC37972  Conyza canadensis Peter Sorensen 1976-7-15 Humboldt Woodley Island Comment
  HSC12546  Conyza canadensis C. Kline 1970-11-15 65 Humboldt Bayside Rd., .5 mi. N of Bayside Comment
  UC14965  Corallorhiza maculata P. E. Goddard 1901-7-8 29 Humboldt Hupa Valley Comment
  HSC16586  Corallorhiza maculata Doris K. Kildale 1926-5-2 1845 Humboldt Bald Mtn. road, between Bald Mtn. House and junction of Redwood Creek Road. Comment
  SJSU916  Corallorhiza mertensiana J. W. Tilden 1946-6-21 1013 Humboldt Bluff Creek c. 1.5 mi above junction with Klamath River Comment
  UC1196460  Corallorhiza mertensiana Joseph P. Tracy 1918-6-23 4960 Humboldt near Boynton Prairie; Northern Coast Ranges, around Humboldt Bay 304 Comment
  RSA21024  Cordylanthus maritimus subsp. palustris Carl B. Wolf 1937-9-12 9278 Humboldt Humboldt Bay, 1 mile south of Arcata on road to Eureka. 3 Comment
  JEPS15870  Corethrogyne filaginifolia Joseph P. Tracy 1938-7-15 16059 Humboldt sandy fields at Bucksport (at Eureka); Eureka Comment
  POM356152  Corethrogyne filaginifolia var. californica E. A. Purer 1932-7-30 4675 Humboldt South of Orick Comment
  UC35022  Cornus nuttallii Chesnut and Drew 1888-7-9 Humboldt Kneeland Prairie Comment
  CAS-BOT-BC212182  Cornus sericea A. A. Heller 1923-7-10 13793 Humboldt Along the Eel River between Scotia and Pepperwood Comment
  HSC99428  Cornus sericea subsp. sericea K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-7 77 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  JEPS79877  Cornus sericea subsp. sericea Joseph P. Tracy 1927-11-6 8392 Humboldt along Yager Creek Carlotta; Northern Coast Ranges 60 Comment
  RSA309624  Cornus sessilis W. Wisura 1983-9-2 3929 Humboldt 6 mi W of Willow Creek, at East Fork campground, along Hwy 299. Comment
  RSA394654  Cornus sessilis Jane Turner, Francis M. Ball, B. L. Turner 1962-7-10 1144 Humboldt East Fork Willow Creek Forest Camp, Hwy 299 ca. 5 mi. W of Willow Creek in Six Rivers National Forest. 457 Comment
  UC502984  Cornus sessilis Joseph P. Tracy 1927-3-27 7857 Humboldt near S. Fork Trinity R. Valley; Northern Coast Ranges, Trinity R. Valley 182 Comment
  JEPS53365  Coronopus didymus Lincoln Constance 1934-6-18 902 Humboldt border of N. Dyerville Flat, near South Fork Rail Road Station and Post Office, South Fork Eel River South Fork Eel River; Bull Creek Region, South Fork Eel River Comment
  UC1199212  Coronopus didymus Joseph P. Tracy 1946-5-30 17540 1/2 Humboldt vicinity of Carlotta 30 Comment
  HSC12552  Coronopus didymus D. La Conte 1970-10-11 18 Humboldt Comment
  UC902054  Corylus californica Joseph P. Tracy 1949-2-27 18265 Humboldt Kneeland Prairie 762 Comment
  HSC65072  Corylus cornuta subsp. californica J. P. Smith, Steve Selva 1970-6-14 3856 Humboldt Along Hwy. 96 at Whitmore Creek 152 Comment
  CHSC19513  Cotula coronopifolia J. F. Knezevich 1968-5-14 431 Humboldt Collected 13 miles south of Ferndale at Cape Mendocino. Comment
  UC1223033  Cotula coronopifolia Joseph P. Tracy 1948-5-31 17986 Humboldt Robertson's Sheep Ranch halfway between Garberville and Harris; Robertson's Ranch 609 Comment
  HSC49801  Cotula coronopifolia R. York 1979-4-16 236 Humboldt Between Arcata and Eureka along Hwy. 101 Comment
  HSC87175  Crassula aquatica K. Grenier 1988-11-16 291 Humboldt North Spit of Humboldt Bay Comment
  UCR275124  Crataegus monogyna Charity A. Hartshorn 2016-4-24 10 Humboldt Arcata Marsh & Wildlife Sanctuary, east end of Klopp Lake 7 Comment
  JEPS25619  Crepis capillaris Rimo Bacigalupi 1959-7-7 7252 Humboldt immediately behind bluff headland of Cape Mendocino (and just n of road summit at this point, along roadside ditch) 30 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
  UC164829  Crepis capillaris J. P. Tracy 1909-7-4 3005 Humboldt Immediate vicinity of Eureka 0 Comment
  CAS-BOT-BC291487  Crepis capillaris L. R. Abrams 1927-8-31 12055 Humboldt Marshes between Arcata and Eureka along highway Comment
  RSA28654  Crepis capillaris H. E. Parks 1941-08 24189 Humboldt Roadsides and fields, vicinity of Trinidad Comment
  RSA32733  Crepis capillaris A. A. Heller 1923-7-9 13777 Humboldt Near Blue Lake, 5 miles from Arcata. Comment
  CAS-BOT-BC376477  Crepis pleurocarpa Joseph P. Tracy 1935-7-28 14332 Humboldt Trinity Summit. Head of Brett Hole 1828 Comment
  JEPS22553  Crocidium multicaule Joseph P. Tracy 1933-5-21 12212 Humboldt McClellan Mountain 822 Comment
  HSC102928  Cryptantha M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-12 900 Humboldt Patterson Meadows 1566 Comment
  HSC57947  Cryptantha affinis G. L. Clifton, Griswold 1979-7-31 11623 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1719 Comment
  UC1239655  Cryptantha flaccida Joseph P. Tracy 1939-8-5 16383 Humboldt Dinsmore's 746 Comment
  UC175791  Cryptantha torreyana Joseph P. Tracy 1909-8-1 3071 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  UC79506  Cryptantha torreyana J. W. Blankinship 1893-6-29 Humboldt Eel River Comment
  HSC55070  Cryptogramma acrostichoides G. L. Clifton, Griswold 1979-7-31 11650 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1719 Comment
  HSC63877  Cryptogramma acrostichoides M. A. Baker 1979-6-27 926 Humboldt E of Oregon Creek Comment
  JEPS39837  Cupressus lawsoniana W. L. Jepson 1902-6 2131 Humboldt Three Creeks to summit of ridge (on grade to Redwood Creek) 914 Comment
  UC63992  Cupressus lawsoniana Mrs. M. H. Manning 1901-10-1 Humboldt near Hupa (Redwood trail) 762 Comment
  HSC58088  Cuscuta californica G. L. Clifton, Griswold 1979-8-1 11997 Humboldt Near N Trinity Mtn., close to the town of Hoopa 1799 Comment
  RSA639037  Cuscuta californica R. F. Thorne, P. C. Everett 1965-8-7 35226 Humboldt Samoa Peninsula. 3 Comment
  UCSB24335  Cuscuta californica Tracy, Joseph 1930-7-16 Humboldt South Fork Mountain; openings in fir forest near McKay Camp 1676 Comment
  UC906746  Cuscuta campestris Harry B. Tucker Oct 1946 Humboldt 6 Comment
  UCD60113  Cynodon dactylon Joseph P. Tracy 1939-8-18 16427 Humboldt Eureka. 15 Comment
  CHSC26301  Cynoglossum grande L. Greenhill 1977-4-5 8 Humboldt 15 ft. from highway 36 on n side, 3 miles w of Bridgeville. 182 Comment
  JEPS39358  Cynoglossum grande Lincoln Constance 1934-6-7 831 Humboldt Bull Creek Region, S. Fork Eel R., Johnson Prairie Comment
  CHSC94941  Cynoglossum occidentale K. Lang; J. Lang 2005-3-14 8 Humboldt Trinidad, California coast. 51 Comment
  OBI22352  Cynosurus echinatus Joseph P. Tracy 1941-6-29 16920 Humboldt McClellan Mt Comment
  HSC45955  Cyperus eragrostis J. P. Smith, Steve Selva 1970-6-14 3823 Humboldt Along Hwy. 96 at Whitmore Creek 152 Comment
  HSC7210  Cyperus eragrostis D. E. Anderson 1963-9-29 2848 Humboldt Fish Lake Comment
  UC1103641  Cyperus strigosus Joseph P. Tracy 1931-9-7 9655 Humboldt Trinity R. Valley at Willow Creek; Trinity R. Valley 152 Comment
  UC1196445  Cypripedium montanum D. F. Young 1924-4-26 Humboldt near South Fork; Northern Coast Ranges, Trinity River Valley 182 Comment
  HSC74128  Cystopteris fragilis R. York 1980-5-23 621 Humboldt Near Buck Mtn. 1524 Comment
  RSA728077  Dactylis glomerata Gary D. Wallace 1979-6-24 1859 Humboldt Brush Mountain Lookout, SW of the town of Willow Creek; near Honker Timber scale (?), near lookout. 1216 Comment
  RSA126598  Dactylis glomerata H. S. Yates 1936-6-23 5852 Humboldt 2 miles E of mouth of Mad River. 30 Comment
  CAS-BOT-BC94774  Danthonia californica R. C. Wenk; P. Hopkinson; M. Hammond; S. Spiegal 2008-6-6 838 Humboldt Humboldt Redwoods State Park. Pole Line Prairie, along Pole Line Road, 1 air mile N of Mattole Road, 6 air miles E of 274 Comment
  HSC9549  Danthonia californica J. P. Tracy 1930-7-10 8860 Humboldt Brannan Mountain. 1220 Comment
  SEINET10598246  Danthonia californica Joseph P. Tracy 1912-6-9 Tracy 3650 Humboldt Alton, common on open slopes. 30 Comment
  UC1152019  Danthonia unispicata Joseph P. Tracy 1951-7-26 19593 Humboldt Redwwod Creek Board Camp Mountain (extreme head, n side of mt.) Comment
  HSC20251  Darmera peltata C. F. Hudson 1964-5-7 6436 Humboldt 2 mi. up river from the mouth of Mad River, S bank 1 Comment
  BLMAR238  Datisca glomerata Jennifer Anthony-Wheeler 1997-6-13 238 Humboldt King range, growing in wet seep along old queen mine rd 512 Comment
  UC249647  Delphinium decorum subsp. tracyi Joseph P. Tracy May 14 1922-Jun 12 1922 6047 &6088 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  UC467718  Delphinium decorum subsp. tracyi Joseph Burtt Davy and Walter C. Blasdale 1899-6-29 5802 B Humboldt Trinity Summit Comment
  UC503043  Delphinium decorum subsp. tracyi Joseph P. Tracy 1927-6-12 8160 Humboldt lower slopes Northern Coast Ranges, Horse Mountain 1219 Comment
  HSC75491  Delphinium depauperatum J. O. Sawyer 1980-7-18 3632 Humboldt North Trinity Mountain Research Natural Area, north of Mill Creek Lake to Red Cap Hole. Comment
  RSA304854  Delphinium gracilentum James R. Shevock 1971-5-29 643 Humboldt Trinity Hwy. 457 Comment
  SD46536  Delphinium hesperium E. K. Balls, L. W. Lenz 1956-6-12 21665 Humboldt 9.1 miles ne from Blue Lake along U.S. Hwy. 299, Arcata to Willow Creek. 487 Comment
  UC552299  Delphinium hesperium subsp. hesperium Joseph P. Tracy 1934-4-8 13174 Humboldt between Miranda and Redway; North Coast Ranges, South Fork Eel River 91 Comment
  UC9180  Delphinium hesperium subsp. pallescens Harley P. Chandler June 1901 1410 Humboldt Klamath River North Coast Ranges 304 Comment
  UC1196311  Delphinium hesperium subsp. pallescens Joseph P. Tracy 1932-6-14 10146 Humboldt open hillside near South Fork; Northern Coast Ranges, Trinity River Valley 304 Comment
  HSC25009  Delphinium nudicaule J. Sandborg, F. Sandborg May 1968 8 Humboldt Bluff Creek near Notice Creek 793 Comment
  UC249530  Delphinium nudicaule Joseph P. Tracy 1922-4-30 6012 Humboldt near Willow Creek; Northern Coast Ranges, Trinity River Valley 152 Comment
  HSC98172  Delphinium nudicaule Allan R. Marshall 1962-5-11 9 Humboldt 50 yds. in front of N side of Hwy. 299 610 Comment
  CAS-BOT-BC121973  Delphinium trolliifolium E. K. Balls; L. W. Lenz 1955-5-15 20736 Humboldt 9.9 mi. SW from Fernbridge, along Old Coast road to Capetown 502 Comment
  SD58244  Delphinium trolliifolium W. L. Jepson 1934-5-6 16681 Humboldt Little Larrabee Creek Comment
  UC1334522  Delphinium trolliifolium G. A. L. Mehlquist and J. A. Jenkins 1940-5-23 17 Humboldt Comment
  SEINET10515720  Deschampsia cespitosa Mark Stopher 1980-6-4 Stopher 95 Humboldt Very common along Elk River near Hwy 101 bridge. T4N R1W sw 1/4 sec 4, Eureka quadrangle. Elevation 1 mi. 1 Comment
  CAS-BOT-BC194340  Deschampsia cespitosa subsp. beringensis Joseph P. Tracy 1934-7-20 13465 Humboldt Big Lagoon 6 Comment
  CAS-BOT-BC194291  Deschampsia cespitosa subsp. cespitosa Doris K. Kildale 1928-7-29 5922 Humboldt Bear River at Capetown Comment
  HSC13422  Deschampsia elongata D. C. Juve 1964-5-16 37 Humboldt Campbell Creek Ranger Station, Camp Tish-Tang, Hwy 96. Comment
  HSC74436  Deschampsia elongata Gail Newton 1980-8-10 2067 Humboldt Near Blake Mtn. 1707 Comment
  UC34148  Deschampsia elongata Jos. Burtt Davy 1899-6-8 5345 Humboldt <B____'s> Springs to Harris Comment
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Nov 27 2009
  UC526672  Deschampsia elongata Joseph P. Tracy 1932-7-17 10680 Humboldt ridges e. of Corral Prairie; Klamath Mts., Trinity Summit 1828 Comment
  HSC102126  Descurainia incana M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 1030 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  HSC98873  Dianthus armeria Cara Witte 2007-8-1 618 Humboldt Friday Ridge Road (Forest Service Road 6N08). Approximately 1.25 miles northeast of intersection with Friday Camp. 1222 Comment
  HSC8357  Dicentra formosa D. A. Shally 1965-5-15 51 Humboldt Arcata, 1/4 mi. NE of HSC campus on Jolly Giant Creek Comment
  HSC91892  Dicentra formosa E. Mackey 1987-3-1 Humboldt Patrick's Point State Park Comment
  BLMAR618  Dicentra formosa Jennifer Wheeler 2011-5-23 618 Humboldt Lacks Creek, Bair Rd. about one mile from Hwy. 299 426 Comment
  HSC8361  Dicentra formosa D. K. Smith 1968-3-3 11 Humboldt West End Rd., 3 mi. from Hwy. 299 Comment
  SJSU1033  Dicentra formosa A. C. Browne 1950-5-23 Humboldt Weott Comment
  UC1362289  Dicentra formosa Kingsley R. Stern 1964-6-13 2106 Humboldt 2.3 mi w U.S. Highway 101 (on e bank of Redwood Creek); Redwood Creek Comment
  CAS-BOT-BC402406  Dicentra formosa subsp. formosa J. P. Tracy 1904-4-17 2013 Humboldt Immediate vicinity of Eureka 152 Comment
  RSA50143  Dicentra formosa subsp. formosa E. K. Balls 1949-7-11 13971 Humboldt 35 miles west of Willow Creek on Hwy 299 from Willow Creek to Arcata 305 Comment
  CAS-BOT-BC47495  Dicentra formosa subsp. oregana James Payne Smith, Jr. 1977-7-3 9267 Humboldt Onion Lake Comment
  SEINET7293094 Image available Dichanthelium acuminatum subsp. fasciculatum Joseph P. Tracy 1918-1 5014 Humboldt White North Valley 305 Comment
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Apr 22 2016
  RSA92450  Dichanthelium acuminatum var. fasciculatum Joseph P. Tracy 1931-5-17 9427 Humboldt Trinity River Valley, at Willow Creek 152 Comment
  UC413903  Dichelostemma X venustum Lee Harris Jun 1930 Humboldt Comment
  HSC86307  Dichelostemma capitatum subsp. capitatum K. Berg, B. Bonning 1983-5-21 493 Humboldt 0.5 mi. up Titlow Hill Rd. from Berry Summit 854 Comment
  RSA756869  Dichelostemma capitatum subsp. capitatum Barbara Ertter, Thomas J. Delendick 1987-5-16 6927 Humboldt Vista Point just W of Berry Summit on Highway 299, ca. 15 air miles E of Arcata. 915 Comment
  HSC97967  Dichelostemma congestum Cara Witte 2007-7-2 392 Humboldt Cold Spring. 1/2 mile south of Titlow Hill. 1406 Comment
  HSC3035  Dichelostemma ida-maia Paul Shields 1955-6-12 Humboldt 6 miles west of Meyers Flat Comment
  HSC48851  Dichelostemma ida-maia Brad Klipfel 1973-7-15 210 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  CAS-BOT-BC501022  Dichelostemma ida-maia Henry M. Pollard 1946-8-16 s.n. Humboldt Across [Klamath] river from Orleans Comment
  CHSC1743  Digitalis purpurea M. Anthony 1960-5-14 Humboldt N. of Arcata, Highway 101. Comment
  UC535744  Digitalis purpurea Eleanor Armstrong 1174 Humboldt Richardson Grove Comment
  SEINET4095000  Digitalis purpurea O. M. Clark 1932-1 5315 Humboldt South Eureka. Comment
  CAS-BOT-BC150349  Diplacus aurantiacus L. R. Abrams 1916-7-18 6141 Humboldt At Trinidad Comment
  CAS-BOT-BC153235  Diplacus kelloggii Duart V. Brown 1947-4-2 33 Humboldt Near Sweed Creek, Trinity River Comment
  JEPS61836  Disporum smithii W. L. Jepson 1932-7-27 16477 Humboldt Bull Creek Comment
  SEINET4170370  Disporum smithii Unknown 1933-5-21 12209 Humboldt McClellan Mountain 671 Comment
  UC526904  Distichlis spicata Joseph P. Tracy 1933-8-22 12989 Humboldt Mouth of Eel River 3 Comment
  SEINET3928433  Distichlis spicata var. spicata Thomas Nelson, Doris Niles 1979-5-19 4693 Humboldt Ferndale Quad. Tidal marsh mouth of Eel River at Crab Park. North of County Park.; 0 Comment
  JEPS8451  Dodecatheon jeffreyi Rimo Bacigalupi with J. P. Tracy, L. Constance, R. Moran, R. L. Rodriguez, and S. Carlquist 1951-6-14 3418 Humboldt edge of meadow at Snow Camp btw Mad River and Redwood Creek (Bald Mountain Ridge) (Ridge between Mad River and Redwood Creek (Bald Mountain Ridge)) 1432 Comment
  UC1243950  Downingia elegans Joseph P. Tracy 1947-6-28 17748 Humboldt Larrabee Valley 731 Comment
  RSA32864  Downingia yina A. A. Heller 1923-7-8 13771 Humboldt Near Fortuna Comment
  HSC12219  Drosera rotundifolia Gary J. Stebbins 1970-5-10 77 Humboldt S end of Big Lagoon, just S of the Rd. that crosses the marsh, 1.1 mi. N of the Big Lagoon store. Comment
  CAS-BOT-BC159617  Drymocallis glandulosa var. glandulosa Joseph P. Tracy 1935-5-25 13899 Humboldt Dobbyn Creek 152 Comment
  UC154226  Drymocallis glandulosa var. glandulosa Joseph P. Tracy 1908-6 2744 Humboldt nw slope of Buck Mountain Northern Coast Ranges, Buck Mountain 762 Comment
  UC1198689  Drymocallis glandulosa var. wrangelliana Joseph P. Tracy 1933-5-14 12172 Humboldt Trinity River Valley at Willow Creek; Trinity River Valley, Willow Creek 152 Comment
  HSC44564  Drymocallis hansenii Brad Klipfel 1973-7-15 184 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC31442  Drymocallis lactea var. lactea D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-13 5560 Humboldt Westward lower slopes of Black Lassic near Trinity Co. line. 1585 Comment
  HSC44528  Drymocallis lactea var. lactea Brad Klipfel 1973-7-1 136 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC57995  Drymocallis lactea var. lactea G. L. Clifton, Griswold 1979-7-31 11758 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1805 Comment
  HSC975  Dryopteris arguta R. I. Bonn 1965-5-9 49 Humboldt 4 mi. W of Arcata on Lanphere Rd. Comment
  SEINET6424490 Image available Dryopteris dilatata Hicks, Carpenter 1977-7-12 Humboldt Prairie Creek State Park Comment
  CAS-BOT-BC428298  Dudleya farinosa W. R. Dudley 1899-1-1 s.n. Humboldt Trinidad Head Comment
  HSC26394  Dudleya farinosa T. O. Osborne 1970-9-16 29 Humboldt Trinidad Bay, Prisoner Rock Comment
  CAS-BOT-BC113643  Eleocharis acicularis Doris K. Kildale 1928-7-29 5932 Humboldt Kinman Pond, Bear River Ridge. Comment
  JEPS19332  Eleocharis acicularis Joseph P. Tracy 1937-8-12 15626 Humboldt Bald Mountain, at Lake Prairie 1066 Comment
  UC666917  Eleocharis bella Joseph P. Tracy 1935-7-27 14299 Humboldt Trinity Summit, McKay Prairie 1584 Comment
  HSC7320  Eleocharis macrostachya C. B. Wolf 1927-8-22 793 Humboldt Big Lagoon Comment
  CAS-BOT-BC112845  Eleocharis macrostachya Malcom A. Nobs; Stanley Galen [S. Galen] Smith 1949-8-11 1346 Humboldt Marshes on eastern side of Big Lagoon. Comment
  RSA53823  Eleocharis obtusa var. engelmannii Henry M. Pollard s.n. Humboldt Near Orleans. Comment
  CHSC96444  Eleocharis pachycarpa Gordon Leppig 1997-8-3 648 Humboldt Big Lagoon County Park, Big Lagoon Bog. UTM Zone 10 NAD 1927, 405321E 4557202N. 3 Comment
  UC666879  Eleocharis pachycarpa Joseph P. Tracy 1935-6-8 13947 Humboldt Dry Lagoon (along coast in front of South End of Stone Lagoon) 3 Comment
  UC666880  Eleocharis pachycarpa H. E. Parks and Joseph P. Tracy 1931-6-7 9569 Humboldt Trinidad 60 Comment
  HSC32330  Elymus elymoides var. californicus D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5634 Humboldt Senteney Rock, a large barren Franciscan Rock along Swayback Ridge. Comment
  RSA129273  Elymus glaucus H. S. Yates 1936-6-23 5856 Humboldt 2 miles S.E. of mouth of Mad River 30 Comment
  UC1103476  Elymus glaucus Joseph P. Tracy 1936-6-9 14889 Humboldt Bear River Ridge 457 Comment
  UC184693  Elymus glaucus Joseph P. Tracy 1912-7-26 3829 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  HSC102546  Elymus glaucus subsp. glaucus M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-29 1536 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1579 Comment
  CAS-BOT-BC203798  Elymus glaucus subsp. virescens Joseph P. Tracy 1927-6-26 8213 Humboldt Stone Lagoon 6 Comment
  HSC9726  Elymus mollis subsp. mollis J. W. Johnson 1962-4-29 1297 Humboldt W.M. Lanphere Farm, Samoa Peninsula, Arcata. Comment
  HSC9731  Elymus mollis subsp. mollis D. B. Bader 1963-5-1 16 Humboldt Clam beach Lagoons, W of Hwy. 101. Along railroad tracks. Comment
  HSC98008  Elymus multisetus Cara Witte 2007-7-8 439 Humboldt Board Camp Mountain. Trail 4E28. 1498 Comment
  UC1040574  Elymus trachycaulus L. T. Burcham 1956-7-19 342 Humboldt Northeast Capetown; along roadside and on adjacent sheep range. 365 Comment
  SEINET200933  Elymus trachycaulus subsp. trachycaulus J. P. Tracy 1912-7-27 3885 Humboldt Kneeland prairie 762 Comment
  POM271541  Epilobium angustifolium var. macrophyllum Lyman Benson 1928-7-8 725 Humboldt Weott Ranger Station; Mt. Range: Seaward N Coast; Watershed: S Fork Eel River. 61 Comment
  HSC54564  Epilobium brachycarpum Overton, Butler 1979-7-24 9583 Humboldt Near Titlow Hill, close to the town of Willow Creek. 1250 Comment
  CDA38060  Epilobium brachycarpum T. C. Fuller 1962-8-6 9361 Humboldt Near Hwy 299 to Blue Lake, 2.6 miles east of Bald Mtn. Summit Rd., 1 miles west of Green Point School. 0 Comment
  UC1197003  Epilobium ciliatum subsp. ciliatum Joseph P. Tracy 1920-8-15 5388 Humboldt Bluff Creek Northern Coast Ranges, Klamath River 152 Comment
  UC146118  Epilobium ciliatum subsp. ciliatum J. P. Tracy 1902-7-20 1752 Humboldt Immediate vicinity of Eureka 0 Comment
  UCD20169  Epilobium ciliatum subsp. glandulosum J. M. Tucker 1948-9-3 1858 Humboldt Clear Lake, near junction of Friday Ridge Road and Horse Mountain-Grouce Mountain Road. Comment
  HSC16316  Epilobium densiflorum D. E. Anderson 1962-7-14 2253 Humboldt About 3 mi. E of Kneeland Comment
  HSC55081  Epilobium hallianum G. L. Clifton, Griswold 1979-7-31 11736 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa. 1845 Comment
  HSC98676  Epilobium hornemannii subsp. hornemannii Cara Witte 2007-6-21 324 Humboldt Board Camp Mountain. Forest Service Road 4N38. 1430 Comment
  UC562496  Epilobium septentrionale Joseph P. Tracy 1933-9-9 13075 Humboldt vicinity of Garberville (along S. Fork Eel River); S. Fork Eel River 121 Comment
  UC1225850  Epipactis gigantea Joseph P. Tracy 1948-8-22 18107 Humboldt Blue Slide Van Duzen River 91 Comment
  HSC54581  Equisetum telmateia subsp. braunii Overton, Butler 1979-7-24 9625 Humboldt Near Titlow Hill, close to the town of Willow Cr. 1250 Comment
  HSC887  Equisetum telmateia subsp. braunii Dan O'Brien 1962-5-20 Humboldt 0.5 mi. E of Humboldt State University campus Comment
  HSC95578  Equisetum telmateia subsp. braunii Andrea Pickart 2002-3-31 23 Humboldt Arcata Marsh, Dan Hauser Marsh 0 Comment
  HSC9785  Eragrostis mexicana subsp. virescens J. P. Tracy 1931-9-7 9653 Humboldt Trinity River Valley, Willow Creek Comment
  CAS-BOT-BC291161  Erechtites L. R. Abrams 1927-8-31 12052 Humboldt Arcata to Eureka - along highway Comment
  CHSC67762  Erica lusitanica Vernon H. Oswald 1997-2-12 8306 Humboldt Elk Head, N end of Trinidad State Beach, along the trail on the bluff overlooking the ocean. Also common along Hwy. 101 near Trinidad. 30 Comment
  RSA783323  Erica lusitanica R. R. Halse 2010-3-25 7855 Humboldt Along US Hwy 101 ca. 9.7 miles S of Orick. 5 Comment
  POM126125  Ericameria arborescens subsp. arborescens Joseph P. Tracy 1924-8-24 6827 Humboldt Trinity River Valley, near Willow Creek 183 Comment
  CAS-BOT-BC293612  Erigeron biolettii Doris K. Kildale 1929-8-4 8777 Humboldt Mattole River at Union Mattole Comment
  UCSB30605  Erigeron canadensis Edwards, David 1974-7-30 Humboldt In NW corner of Uniontown Shopping Center at the corner of 'F' St. and 7th St., Arcata 18 Comment
  SEINET11855650  Erigeron decumbens var. robustior J. P. Tracy 1942-7-4 17370 Humboldt Buck Mountain, lower foothills of its NW slope 762 Comment
  CAS-BOT-BC296108  Erigeron foliosus var. confinis J. W. Tilden 1946-6-21 s.n. Humboldt Bluff Creek Comment
  RSA90920  Erigeron foliosus var. confinis F. W. Peirson 1926-7-13 7049 Humboldt River bottom, near Blue Lake, Mad River Comment
  UC673210  Erigeron foliosus var. confinis Lincoln Constance and Reed C. Rollins 1942-5-12 2896 Humboldt 1 mi s Somes Bar (bluffs at junction of rivers); Klamath-Siskiyou region, Klamath and Salmon rivers 152 Comment
  CAS-BOT-BC295171  Erigeron inornatus Volney Rattan 1878-1-1 s.n. Humboldt Unspecified Comment
  UC581719 Image available Erigeron klamathensis Joseph P. Tracy 1937-7-24 15515 Humboldt 2 mi se Devil's Hole; Trinity Summit 1584 Comment
  HSC66281  Erigeron maniopotamicus M. A. Baker 1980-6-28 2499 Humboldt Near Mad River Buttes 1445 Comment
  RSA121418  Erigeron philadelphicus H. S. Yates 1936-6-23 5855 Humboldt 2 miles S.E. of mouth of Mad River 30 Comment
  CAS-BOT-BC214591  Erigeron philadelphicus John Thomas Howell 1931-6-17 6717 Humboldt At mouth of Van Duzen River Comment
  HSC5527  Erigeron philadelphicus D. E. Anderson 1963-5-25 2488 Humboldt 1 mi. N of Capetown Comment
  JEPS41364  Erigeron philadelphicus var. philadelphicus Joseph P. Tracy 1912-6-9 3651 Humboldt Alton Northern Coast Region, Alton 30 Comment
  UC1118185  Erigeron strigosus var. strigosus H. L. Person 1932-8-28 Humboldt e Mad River bridge; Eureka Quadrangle, Korbel Comment
  HSC26876  Eriogonum latifolium Clifton Raymond Chesbrough 1973-6-19 80 Humboldt 1/4 mi. W of the Samoa entrance to Samoa Bridge Comment
  RSA331968  Eriogonum latifolium Dave Kelly 1985-7-28 4064 Humboldt Near Manila, Samoa Peninsula near Eureka. Comment
  HSC17292  Eriogonum latifolium D. E. Anderson 1962-7-4 2248 Humboldt Luffenholtz Beach 5 mi. S of Trinidad along old Hwy. 101, 2 mi. N of mouth of Little River Comment
  RSA766119  Eriogonum latifolium Arthur Menzies 1961-9-3 s.n. Humboldt Samon Comment
  RSA53819  Eriogonum luteolum H. M. Pollard 1945-8-25 s.n. Humboldt Between Orleans and Camp Creek, Klamath River Canyon. Comment
  CAS-BOT-BC259539  Eriogonum luteolum var. luteolum Carl D. Duncan 1920-9-22 s.n. Humboldt Hoopa Valley Comment
  HSC55268  Eriogonum nudum Overton, Butler 1979-8-2 12638 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  HSC74288  Eriogonum nudum M. A. Baker 1980-7-23 3194 Humboldt Near Orleans Mtn. 1859 Comment
  CAS-BOT-BC261498  Eriogonum nudum var. nudum L. R. Abrams 1916-7-11 6003 Humboldt Between Blocksberg and Bridgeville Comment
  HSC32552  Eriogonum nudum var. oblongifolium Thomas W. Nelson 1973-9-2 1121 Humboldt McKeown Ranch N of Dinsmore Comment
  UC176685  Eriogonum nudum var. oblongifolium Joseph P. Tracy 1912-7-21 3761 Humboldt Alton Norther Coast Ranges, Alton 30 Comment
  CAS-BOT-BC269868  Eriogonum nudum var. pubiflorum Carl D. Duncan 1920-9-21 316 Humboldt In the vicinity of Hoopa Comment
  SEINET11945862  Eriogonum nutans var. nutans Tiehm 1995-5-21 12092 Humboldt extreme S end of Bilk Creek Mts, just NW of Sod House near where the Quinn River crosses hwy 140 1326 Comment
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Jun 2 2019
  UC55396  Eriogonum umbellatum var. argus Mrs. M. H. Manning 1900-1 Humboldt Hoopa Comment
  HSC24386  Eriogonum umbellatum var. goodmanii J. O. Sawyer 1970-6-24 2211 Humboldt Ridge on Big Hill Rd., E of Hoopa 1189 Comment
  HSC39231  Eriogonum umbellatum var. nelsoniorum D. E. Anderson, J. P. Smith 1971-7-6 - 1281 Humboldt Horse Mtn. Comment
  SEINET5333035  Eriogonum umbellatum var. nelsoniorum J. L. Reveal 2001-7-18 8346 Humboldt Along U.S. Forest Service Road 1 northwest of Grouse Mountain at milepost 14.3, about 10.3 air miles southwest of Salyer 1372 Comment
  UC1198156  Eriogonum umbellatum var. nelsoniorum Joseph P. Tracy Jul 16 1930-Jul 19 1930 8949 Humboldt near Blake Lookout (along summit of South Fork Mountain); Northern Coast Ranges, South Fork Mountain 1706 Comment
  SEINET5332487 Image available Eriogonum umbellatum var. nelsoniorum J. L. Reveal 2001-7-18 8345 Humboldt Along U.S. Forest Service Road 1 at south end of Whiting Ridge, about 0.5 air miles west-northwest of High Salt round and 9.3 air miles westof Hyampom, 1295 Comment
  HSC55053  Eriogonum umbellatum var. stellatum G. L. Clifton, Griswold 1979-7-31 11584 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa Comment
  HSC55169  Eriogonum umbellatum var. stellatum Gilbert Muth 1979-8-1 12163 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1677 Comment
  SEINET3841343 Image available Eriogonum umbellatum var. stellatum Joseph P. Tracy 1935-7-28 14329 Humboldt Trinity Summit, Head of Devil's Hole 1829 Comment
  HSC58062  Eriophorum crinigerum G. L. Clifton, Griswold 1979-8-1 11939 Humboldt Near Mill Creek Lakes, close to the town of Hoopa 1692 Comment
  HSC48029  Eriophyllum lanatum Brad Klipfel 1974-6-25 425 Humboldt Horse Mtn. Comment
  HSC57128  Eriophyllum lanatum var. achilleoides Overton, Butler 1979-7-25 9895 Humboldt Near Sims Mtn., close to the town of Willow Creek 1295 Comment
  HSC75943  Eriophyllum lanatum var. achilleoides Overton, Butler 1979-7-24 9706 Humboldt Near Black Rock, close to the town of Willow Creek. 1554 Comment
  JEPS34743  Eriophyllum lanatum var. achilleoides Lincoln Constance 1934-5-26 678 Humboldt s end of Dyerville Bridge (South Fork of Eel River); Bull Creek Region, South Fork Eel River 45 Comment
  UC1223131  Eriophyllum lanatum var. achilleoides Joseph P. Tracy with A. H. Murphy 1951-6-26 19579 Humboldt vicinity of Twin Lakes (Snow Camp and Twin Lakes trip) Comment
  CAS-BOT-BC301012  Eriophyllum lanatum var. achilleoides Doris K. Kildale 1925-6-28 913 Humboldt Fleener Creek Comment
  HSC97466  Eriophyllum lanatum var. achilleoides Cara Witte 2007-5-29 129 Humboldt White Oak Opening. Along Kinsey Ridge. 1238 Comment
  JEPS34585  Eriophyllum lanatum var. achilleoides Chestnut and Drew 1888-7-12 Humboldt Jarnigans Comment
  UC176464  Eriophyllum lanatum var. achilleoides Joseph P. Tracy 1913-7-25 4338 Humboldt Dinsmore Ranch opposite Buck Mountain; Northern Coast Ranges, Van Dusen River Valley 762 Comment
  CAS-BOT-BC301179  Eriophyllum lanatum var. arachnoideum A. A. Heller 1923-7-9 13784 Humboldt Along the grade south of Eureka Comment
  HSC98102  Eriophyllum lanatum var. grandiflorum Cara Witte 2007-6-20 311 Humboldt Forest Service Road 4N32. 1 mile south of intersection with 4N32E. 1386 Comment
  POM288401  Eriophyllum lanatum var. grandiflorum Lyman Benson 1929-7-19 1862 Humboldt Dyerville to Matole River. Comment
  UC1718078  Eriophyllum lanatum var. grandiflorum John S. Mooring 1970-7-7 2498 Humboldt hwy 96 2.5 miles S of Klamath River in Weitchpec, 20.4 miles N of Willow Creek in Willow Creek Comment
  HSC35083  Eriophyllum staechadifolium Rudolf W. Becking, Thomas Overturf 1974-9-1 Humboldt S of the mouth of the Mattole River Comment
  HSC78966  Erodium moschatum L. P. Janeway 1984-5-16 791 Humboldt N Spit of Humboldt Bay, W side of Samoa Rd., 0.25 mi. N of the boat ramp 3 Comment
  HSC8510  Erodium moschatum Francis Winter 1960-3-26 Humboldt Samoa Peninsula, 2 mi. N of Coast Guard Station Comment
  CAS-BOT-BC41574  Erysimum capitatum S. K. Harris 1936-6-20 3493 Humboldt Above Van Duzen River about 3 miles west of Bridgeville. Comment
  UC1199177  Erysimum capitatum Joseph P. Tracy 1927-6-12 8149 Humboldt Horse Mountain Northern Coast Ranges 1371 Comment
  HSC36913  Erysimum capitatum var. capitatum John Rehling, Robert M. Specht 1976-2-20 111 Humboldt Along Kneeland Rd., halfway to Bridgeville Comment
  JEPS53581  Erysimum capitatum var. capitatum Lincoln Constance 1934-6-22 919 Humboldt summit of peak South Fork Eel River, Bull Creek Region, Grasshopper Peak (down Canoe Cr. rd to Redwood Hwy and thence n to Dyerville) Comment
  BLMAR56  Erysimum menziesii Jennifer Anthony-Wheeler 1994-2-24 56 Humboldt Samoa/manilla dunes, growing in Samoa rare plant area, 12 Comment
  UC146223  Erythronium californicum Ethel Tracy 1906-4-15 Humboldt Harris Northern Coast Ranges 762 Comment
  UCD139632  Erythronium californicum Roman Gankin; W. R. Hildreth 1966-3-15 699 Humboldt State Highway 96, 8.4 miles north of Hoopa. Comment
  HSC96235  Erythronium californicum April A. Allard, Gregory D. O'Connell 2005-6-10 7 Humboldt 4.5 mi. S of Hwy. 299 on NF1 at junction below radio tower 1421 Comment
  UC1197640  Erythronium californicum J. P. Tracy 1908-6-7 2611 Humboldt in woods Butler Valley 152 Comment
  UC275550  Erythronium californicum Joseph P. Tracy 1924-4-27 6639 Humboldt on hwy near Ruby Creek; Northern Coast Ranges, Willow Creek 609 Comment
  HSC15488  Erythronium citrinum var. citrinum E. C. Murczek 1964-4-4 29 Humboldt 8 mi. N of Hoopa Comment
  UC1197643  Erythronium revolutum Ethel Tracy 1907-5-4 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  UC1222541  Erythronium revolutum Joseph P. Tracy 1950-5-7 18650 Humboldt near Redwood House (Head of South Yager); Yager Slope Comment
  UC159113  Erythronium revolutum J. P. Tracy May, 1911 Humboldt Kneeland Prairie Comment
  UC184792  Eschscholzia californica Joseph P. Tracy and Ernest B. Babcock 1912-5-11 3600 Humboldt near Hydesville; Northern Coast Region 60 Comment
  HSC46009  Eschscholzia californica Catherine Chin 1978-9-8 113 Humboldt Arcata, A and 11th St. Comment
  RSA167199  Eucephalus glabratus Joseph P. Tracy 1941-8-24 17043 Humboldt South Fork Mountain, near McKay Camp Comment
  HSC58818  Eucephalus ledophyllus Gilbert Muth 1979-8-1 12103 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1877 Comment
  UC1222991 Image available Eucephalus tomentellus Joseph P. Tracy 1941-8-24 17043 Humboldt near McKay Camp; South Fork Mountain 1676 Comment
  HSC100577  Eucharidium concinnum Carl C. Marshall Jul 1887 Humboldt Spruce Grove region. Comment
  UC34837  Euonymus occidentalis var. occidentalis Chesnut and Drew 1888-7-28 Humboldt Grouse Creek Comment
  CDA4829  Euphorbia davidii E. C. Whitney 1963-8-5 s.n. Humboldt In ballast of N.W.P. R.R. tracks, Scotia. 0 Comment
  NY263154  Euphorbia occidentalis V. K. Chesnut 1888-7-23 Humboldt Hy-Am-Pum (spelling?) Comment
  HSC69641  Euphorbia peplus R. Kalal 1980-6-8 18 Humboldt Arcata, at intersection of Hill St. and Spring St. in the dry waste area of a yard. 43 Comment
  HSC31736  Euphorbia peplus Donald Spalinger 1974-4-20 16 Humboldt Across from 1756 Ridgewood Dr. 122 Comment
  JEPS52427  Euphorbia spathulata Joseph P. Tracy 1926-5-2 7431 Humboldt near The South Fork; Northern Coast Ranges, Trinity River Valley 182 Comment
  UC1198979  Euphorbia spathulata Joseph P. Tracy 1926-5-9 7455 Humboldt near Bridgeville; Northern Coast Ranges 762 Comment
  UC302982  Euphorbia spathulata Joseph P. Tracy 1926-5-9 7455 Humboldt near Bridgeville; Northern Coast Ranges 762 Comment
  HSC96650  Euthamia occidentalis Thomas W. Nelson, Dick Brummitt, Barbara Ertter 2004-7-4 9282 Humboldt Trinity River Bar down stream from the mouth of Willow Creek 152 Comment
  CAS-BOT-BC413854  Fallopia sachalinensis T. C. Fuller 1962-8-6 9364 Humboldt S. side of Hwy 299 to Willow Creek just e. of road to Bald Mtn., 11.2 mi. e. of Blue Lake Comment
  HSC9818  Festuca arundinacea D. J. McVean 1965-5-18 76 Humboldt Along Old Arcata Rd. just S of intersection with Indianola Rd. Comment
  UC1103701  Festuca californica Joseph P. Tracy 1911-7-7 3426 Humboldt ridge n Willow Creek (between Willow and Campbell Creeks, near the summit); Northern Coast Ranges, Brannan Mountain 1219 Comment
  UC526869  Festuca idahoensis Joseph P. Tracy 1930-6-8 8729 Humboldt Kneeland Prairie North Coast Ranges 762 Comment
  SEINET200326  Festuca myuros J. P. Tracy 1914-5-14 4432 Humboldt Northern Coast Ranges Fort Seward. 122 Comment
  HSC76549  Festuca occidentalis Dennis Kearns 1981-7-6 38 Humboldt Near Mosquito Lake 1122 Comment
  HSC98580  Festuca occidentalis Cara Witte 2007-5-23 95 Humboldt Approximately 2 miles from intersection with 4N70 (Grouse Mountain Lookout Road) on 4N32. 1391 Comment
  UC1145212  Festuca occidentalis Joseph P. Tracy 1937-5-30 15305 Humboldt 5 mi n Blocksburg; Larrabee Creek 365 Comment
  UC53591  Festuca occidentalis H. P. Chandler 1901-1 1775 a Humboldt Humboldt Bay Comment
  UCD66163  Festuca occidentalis A. H. Murphy 1950-5-10 Humboldt E. M. Cottrell Ranch, Roth road. Comment
  UCD66353  Festuca rubra H. S. Yates 1936-6-17 5694 Humboldt Lower N. W. slope of Buck Mt. 792 Comment
  CAS-BOT-BC282515  Festuca subbiflora W. R. Dudley 1899-6-1 s.n. Humboldt Bull Creek and Eel River Comment
  HSC98623  Festuca subulata Cara Witte 2008-8-6 1006 Humboldt Board Camp Mountain; 1 mile south of Forest Service Road 4N38 and National Forest 1 intersection. 1416 Comment
  UC1103709  Festuca subuliflora Joseph P. Tracy 1937-5-30 15306 Humboldt 5 mi n Blocksburg; Larrabee Creek 457 Comment
  HSC21492  Foeniculum vulgare Wm. F. Bowman 1968-11-9 Humboldt Along E edge of Humboldt Bay, along elevated area near railroad tracks. Comment
  CAS-BOT-BC453522  Fragaria chiloensis Doris K. Kildale 1927-3-24 3947 Humboldt Flumer Creek Comment
  CAS-BOT-BC457921  Fragaria vesca subsp. californica Doris K. Kildale 1929-4-27 7461 Humboldt Willow Creek - Selya road, 3 miles north of Willow Creek, in Trinity River Comment
  UC1612458  Fragaria virginiana Gunter Staudt and H. Ahmadi 1989-5-15 313 Humboldt n of Trinidad (along Highway 101, near Seawood Drive exit); Highway 101 Comment
  CAS-BOT-BC52733  Frangula californica subsp. californica L. B. Kildale 1931-8-9 s.n. Humboldt Three Creeks on Willow Creek Road Comment
  CAS-BOT-BC53402  Frangula californica subsp. occidentalis Doris K. Kildale 1925-8-13 1115 Humboldt Willow Creek Flat, Trinity River Valley 152 Comment
  HSC18417  Frangula purshiana L. J. Coombes 1964-5-18 50 Humboldt 2.5 mi E of McKinleyville on Hwy. 299 Comment
  SBBG26941  Frangula purshiana subsp. purshiana C. B. Wolf 1937-8-13 Humboldt 11 mi E of Hoopa Valley on new rd towards Trinity summit 1524 Comment
  UC667119  Fritillaria purdyi Joseph P. Tracy 1938-6-13 15925 Humboldt Horse Mt. 1432 Comment
  SEINET8773683  Fumaria capreolata R. R. Halse 2013-3-28 8767 Humboldt Eureka, at a Texaco station near 3543 Broadway Street (US Hwy 101) and its intersection with McCullens Avenue. 6 Comment
  UC1196095  Galium aparine Joseph P. Tracy 1935-7-23 14166 Humboldt lower end Brett Hole; Trinity Summit 1584 Comment
  UC1222498  Galium aparine Joseph P. Tracy 1950-6-25 18891 Humboldt Burr Valley Comment
  HSC19850  Galium aparine J. W. Johnson 1962-4-18 1262 Humboldt Between the Mad River mouth and the Hunt Farm, Samoa Peninsula Comment
  HSC79374  Galium aparine Kenneth Clark 1980-3-27 551 Humboldt Above S Fork of Dead Man's Gulch 183 Comment
  HSC57213  Galium bolanderi Griswold, Butler 1979-7-12 7252 Humboldt Near Cedar Creek, close to the town of Willow Creek 1158 Comment
  HSC71717  Galium californicum M. A. Baker 1980-6-26 2441 Humboldt Near Sims Creek 610 Comment
  POM367789  Galium californicum Anstruther Davidson 1919-07 3328 Humboldt Eel River. Comment
  HSC100642  Galium californicum Carl C. Marshall Jul 1887 400 Humboldt Spruce Grove. Comment
  UC35333  Galium muricatum Chesnut and Drew 1888-7-12 Humboldt Campbell's Comment
  UC416654  Galium parisiense Harley P. Chandler June, 1901 1305 Humboldt Hupa Valley North Coast Ranges, Hupa Indian Reservation 152 Comment
  UC1192013  Galium trifidum Malcolm A. Nobs and S. Galen Smith 1949-8-3 1160 Humboldt 1 mi s Fields Landing (borders of irrigation ditch); Eel River Valley Comment
  HSC24403  Galium triflorum J. O. Sawyer 1970-6-24 2279 Humboldt W of Mill Creek Lakes. 1677 Comment
  HSC76185  Galium triflorum Overton, Butler 1979-7-24 9770 Humboldt Near Black Rock, close to the town of Willow Creek 1463 Comment
  RSA44414  Gamochaeta ustulata H. M. Pollard 1948-7-18 s.n. Humboldt Near Orleans. Comment
  UCD132373  Gamochaeta ustulata Linda M. Barker 1976-7-5 1539 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  UC127829  Gamochaeta ustulata Joseph Burtt Davy and Walter C. Blasdale 1899-5 5465 Humboldt near Elk Prairie; North Western California Comment
  HSC67509  Garrya buxifolia J. P. Smith, J. O. Sawyer 1973-5-12 6703 Humboldt 10.4 mi. from Redwood Creek on Hoopa Rd. Comment
  HSC73064  Garrya buxifolia M. A. Baker 1980-6-16 1949 Humboldt Near Onion Mtn. 1280 Comment
  HSC36442  Garrya elliptica J. P. Smith 1976-1-25 8506 Humboldt End of Murray Rd. Comment
  SEINET3890980  Garrya elliptica C. Davidson 2011-1-26 11826 Humboldt Moonstone Beach, north of McKinleyville.; 0 Comment
  UC634770  Garrya elliptica H. L. Mason 1932-7-21 7102 Humboldt Big Lagoon Comment
  UCD121106  Garrya elliptica Gordon Leppig 1998-6-26 853 Humboldt McKinleyville, Rt. 101 @ Mad River Overlook. 24 Comment
  HSC8395  Garrya fremontii Francis Winter 1960-5-7 Humboldt Sugar Pine Mtn. 1067 Comment
  RSA392395  Garrya fremontii Brad W. Klipfel 1975-5-24 650 Humboldt Horse Mountain Comment
  UC1196892  Garrya fremontii Joseph P. Tracy 1939-8-16 16408 Humboldt Horse Mountain 1432 Comment
  UC668300  Garrya fremontii Joseph P. Tracy 1935-7-14 14062 Humboldt Horse Mountain 1432 Comment
  UCD121162  Garrya fremontii Joseph P. Tracy 1939-1-14 16184 a Humboldt Trinity River Valley, at Willow Creek. 152 Comment
  HSC74354  Gaultheria ovatifolia Gail Newton 1980-6-17 216 Humboldt Near Onion Mtn. 1341 Comment
  CHSC68497  Gaultheria shallon Vernon H. Oswald 1997-4-10 8328 Humboldt Elk Head, north end of Trinidad State Beach. 30 Comment
  HSC22502  Gaultheria shallon H. S. Logsdon 1964-5-13 40 Humboldt 4.0 mi. NE of Orick at Boye's Prairie, E side of Hwy. 101 Comment
  HSC38934  Gaultheria shallon Linda M. Barker 1976-5-13 1482 Humboldt 3 mi. W of Arcata. Comment
  HSC59055  Gaultheria shallon Thomas Wood 1979-5-4 155 Humboldt Big Lagoon Bog 2 Comment
  HSC81927  Gaultheria shallon Thomas W. Nelson, Jane P. Nelson 1979-7-3 4952 Humboldt Along road to Joe Losey property at junction of Kneeland and Maple Creek Rds. 610 Comment
  HSC89510  Gaultheria shallon M. Roantree 1985-4-25 3 Humboldt E side of Trinidad Head. Comment
  RSA249502  Gaultheria shallon R. F. Thorne, Percy C. Everett, K. Thorne 1965-8-5 35131 Humboldt Wailaki Recreation site. 518 Comment
  UC1193364  Gaultheria shallon P. Zinke 1950-9-21 164 Humboldt Outside National Forest, Kerr Peak Kerr Peak; Outside National Forest, Kerr Peak 609 Comment
  OBI14456  Gaultheria shallon H. E. McMinn 1931-6-27 2533 Humboldt Summit above Weitchpec Comment
  SEINET2031090 Image available Gaultheria shallon Joseph P. Tracy 1908-1 2863 Humboldt Valley of Van Duzen River; opposite Buck Mountain 762 Comment
  HSC39619  Gayophytum diffusum subsp. parviflorum Thomas W. Nelson, Jane P. Nelson 1976-6-15 2722 Humboldt Along old trail from lookout to Blocksburg 1585 Comment
  JEPS27605  Gayophytum diffusum subsp. parviflorum Joseph P. Tracy 1932-7-11 10401 Humboldt Corral Prairie Klamath Mountains, Trinity Summit 1524 Comment
  JEPS27598  Gayophytum heterozygum Joseph P. Tracy 1936-8-8 15137 Humboldt on ridge 2 mi e Grove's Prairie; Trinity Summit 1524 Comment
  UC205214  Gayophytum humile Chesnut and Drew July 1888 Humboldt S, Fork Mt. Comment
  UCR84793  Genista linifolia Kathy Harper 1992-5-14 s.n. Humboldt Coast Range, Van Duzen River, c. 1.5 mi. west of Bridgeville on State Hwy 36 195 Comment
  RSA18063  Gentiana sceptrum Carl B. Wolf 1927-8-22 787 Humboldt Big Lagoon. Comment
  UC534995  Gentiana sceptrum H. E. Parks 1931-7-1 10152 Humboldt Bishop Pine Lodge Trinidad 76 Comment
  HSC8453  Gentiana sceptrum D. E. Anderson 1961-9-9 1797 Humboldt Big Lagoon County Park Comment
  HSC23999  Geranium bicknellii Tim Baroni 1971-7-6 125 Humboldt 15 mi. S of Ferndale on Mattole Rd. Comment
  UC179955  Geranium carolinianum Joseph P. Tracy 1914-5-14 4436 Humboldt Fort Seward Northern Coast Region 121 Comment
  CHSC31298  Geranium dissectum Mark Stopher 1980-7-18 120 Humboldt In diked off upland habitat along Elk River near Hwy 101 bridge. 1 Comment
  JEPS61425  Geranium dissectum Mrs. M. H. Manning Jun 1902 Humboldt Hupa Comment
  UC630470  Geranium dissectum H. E. and S. T. Parks Apr 1938 24118 Humboldt Spruce Cove Trinidad 60 Comment
  HSC44760  Geranium oreganum Maralyn O'Meara 1972-6-8 80 Humboldt Along Bald Hills Rd, 16.4 mi. E of junction with Hwy. 101 Comment
  HSC90422  Geranium pusillum Jean Hanson 1980-4-12 42 Humboldt Eureka, Indian Island in Humboldt Bay, W end of island Comment
  HSC12777  Geranium retrorsum Jana Kattenhorn 1970-10-24 140 Humboldt Arcata, HSU campus, S of Harpst St. Comment
  CAS-BOT-BC226147  Gilia capitata subsp. pacifica Doris K. Kildale 1925-6-28 1372 Humboldt Kneeland Prairie - bald hills 762 Comment
  HSC36617  Gilia capitata subsp. pacifica J. D. Ackerman 1974-5-25 266 Humboldt 0.25 mi. S of Lufenholtz Beach between Moonstone and Trinidad 6 Comment
  UC907902  Gilia capitata subsp. pacifica Joseph P. Tracy 1948-9-25 18225 Humboldt Eureka Comment
  HSC17012  Gilia millefoliata J. W. Johnson 1962-5-13 1356 Humboldt Arcata, Christenson Farm on the Samoa Peninsula, Ridge 3 Comment
  HSC34464  Gilia millefoliata J. P. Smith 1975-5-11 8077 Humboldt Samoa Peninsula, just N of The Coast Guard Station boundary. Comment
  JEPS86031  Gilia millefoliata Joseph P. Tracy 1936-5-30 14833 Humboldt near Samoa (on Humboldt Bay); Northern Coast Region, , near Samoa 6 Comment
  JEPS85975  Gilia tricolor subsp. diffusa Joseph P. Tracy 1919-5-31 5144 Humboldt at Willow Creek (Trinity River Valley); Trinity River, Willow Creek 152 Comment
  UC169034  Githopsis specularioides Joseph P. Tracy 1908-6-9 2655 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  UC602567  Githopsis specularioides Joseph P. Tracy 1932-6-17 10221 Humboldt Three Forks of Mad River North Coast Ranges 883 Comment
  UC1198625  Glaux maritima Joseph P. Tracy 1934-7-3 13303 Humboldt around Humboldt Bay (along Freshwater Slough); Northern Coast Region, Freshwater Slough 3 Comment
  RSA550895  Glyceria declinata R. F. Thorne, P. Everett 1965-8-9 35346 Humboldt Along Highway 101 about 3 miles north of Eureka. 2 Comment
  HSC35857  Glyceria elata Thomas W. Nelson, Jane P. Nelson, James Nelson 1975-7-20 2059 Humboldt Beside Rd. 2S08 to Pine Mtn. Comment
  HSC74756  Glyceria elata Gail Newton 1981-8-6 2402 Humboldt Near Humbug Creek 1256 Comment
  POM292466  Gnaphalium chilense Lyman Benson 1929-7-14 1807 Humboldt Weott Ranger Station, South Fork Eel River. Comment
  CAS-BOT-BC302533  Gnaphalium palustre Joseph P. Tracy 1932-7-13 10513 Humboldt Trinity Summit. Open places at Corral Prairie 1584 Comment
  HSC67008  Gnaphalium palustre J. P. Smith 1971-10-9 5037 Humboldt Banks and flood plain of the Mad River above the fish hatchery. Comment
  JEPS34040  Gnaphalium palustre W. L. Jepson 1936-8-17 17919 a Humboldt 2 mi s of Field's Landing (near Still's Ranch, marsh) Comment
  HSC45235  Goodyera oblongifolia Thomas W. Nelson, Jane P. Nelson 1977-7-1 3563 Humboldt N side of ridge between Bear Creek & Blanket Creek 1524 Comment
  UC1212573  Goodyera oblongifolia Francia Chisaki, Helen Sharsmith 1959-8-22 4757 Humboldt Inner North Coast Ranges, Happy Camp, just over line from Trinity County Happy Camp Happy Camp; Inner North Coast Ranges, Happy Camp 914 Comment
  CAS-BOT-BC304745  Grindelia hirsutula H. E. Parks 1941-8-1 24190 Humboldt Big Lagoon Comment
  CAS-BOT-BC304752  Grindelia hirsutula H. E. Parks; S. T. Parks 1930-9-14 0773 Humboldt North shore of Big Lagoon Comment
  JEPS41866  Grindelia hirsutula Joseph P. Tracy 1918-7-1 4976 Humboldt 3 mi s of the point of Cape Mendocino (near ocean shore, following up ravines) 152 Comment
  UC581776  Grindelia hirsutula Joseph P. Tracy 1931-9-13 9669 Humboldt mouth of Eel River Eel River (along tidal sloughs) Comment
  RSA134602  Grindelia stricta var. stricta Percy C. Everett, E. K. Balls 1959-10-25 23967 Humboldt 6 miles NE of Eureka, U.S. Hwy101. Comment
  HSC100391  Gymnogramma triangularis Carl C. Marshall Apr 1886 48 Humboldt Dry hills. Comment
  UC1239636  Hackelia californica Joseph P. Tracy 1919-9-18 5247 1/2 Humboldt Corral Prairie Trinity Summit; Northern Coast Ranges 1524 Comment
  UCD128250  Hedera helix Linda M. Barker 1976-9-3 1687 Humboldt 3 miles west of Arcata. Comment
  HSC102180  Helenium bigelovii M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-3 1093 Humboldt Patterson Meadows 1555 Comment
  CAS-BOT-BC310073  Hemizonella minima R. K. Gierisch; D. H. Esplin 1969-7-1 3535 Humboldt Six Rivers National Forest. Grouse Mtn. Comment
  UC1199292  Hemizonella minima Joseph P. Tracy 1933-7-25 12867 Humboldt Grouse Mountain North Coast Ranges, Grouse Mountain 1524 Comment
  CAS-BOT-BC309984  Hemizonia congesta subsp. tracyi M. S. Jussel 1931-5-2 s.n. Humboldt 6 miles from Garberville Comment
  CAS-BOT-BC309985  Hemizonia congesta subsp. tracyi H. E. Parks; J. P. Tracy 1930-5-25 0880 Humboldt Near Bridgeville Comment
  JEPS12642  Hemizonia congesta subsp. tracyi Joseph P. Tracy 1927-5-8 7983 Humboldt vicinity of Garberville 121 Comment
  UC195063  Hemizonia congesta subsp. tracyi Joseph P. Tracy 1916-6-19 4708 Humboldt Laribee Creek 457 Comment
  HSC36432  Heracleum maximum John Rehling 1974-7-8 4 Humboldt County park at Big Lagoon Comment
  RSA246796  Heracleum maximum R. F. Thorne, P. Everett 1965-8-9 35327 Humboldt Clam Beach County Park: along highway. 3 Comment
  SBBG25781  Hesperocyparis macrocarpa E. R. Blakley 1966-8-17 6801 Humboldt Patrick's Pt, 5 mi N of Trinidad 60 Comment
  OBI12533  Hesperolinon micranthum Joseph P. Tracy 2011-7-6 3356 Humboldt Northern Coast Ranges. Mountain slopes along rd between Three crks and mouth of Willow crk Comment
  UC198602  Heteromeles arbutifolia Miss Landergen Dec 1916 Humboldt Fort Seward; Northern Coast Ranges 91 Comment
  RSA0075926  Heterotheca oregona S. K. Harris 1938-8-24 881 Humboldt Sand of Eel River, near Fernbridge. Comment
  CAS-BOT-BC311058  Heterotheca oregona var. oregona S. K. Harris 1938-8-24 s.n. Humboldt Eel River, near Fernbridge Comment
  HSC56071  Heuchera micrantha G. L. Clifton, Griswold 1979-7-31 11740 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa. 1845 Comment
  CAS-BOT-BC420722  Heuchera micrantha var. diversifolia Ashley C. Browne 1936-6-11 s.n. Humboldt Patrick's Point State Park Comment
  CAS-BOT-BC312398  Hieracium albiflorum Carl D. Duncan 1920-9-28 s.n. Humboldt Hoopa Comment
  HSC67473  Hieracium albiflorum J. P. Smith, Steve Selva 1970-6-14 3834 Humboldt Along Hwy. 96 at Whitmore Creek 152 Comment
  HSC72677  Hieracium albiflorum J. P. Smith 1977-7-3 9241 Humboldt Six Rivers National Forest, on Rd. to Onion Lake, 4.7 mi. from junction with Hwy. 36 610 Comment
  UC582413  Hieracium albiflorum Joseph P. Tracy 1930-7-16 8915 Humboldt near McKay Camp; South Fork Mountain 1676 Comment
  HSC44135  Hieracium albiflorum Thomas W. Nelson, Jane P. Nelson 1977-7-1 3577 Humboldt Along W side of road N from Alder Spring, head of N Fork of Conley Creek 1463 Comment
  UC165198  Hieracium scouleri Joseph P. Tracy 1908-7-1 2891 Humboldt near Low Gap (ridge between Van Duzen and Mad Rivers, Humboldt and Trinity Counties); Northern Coast Ranges 914 Comment
  JEPS72935  Hierochloe occidentalis Lincoln Constance 1934-5-31 749 Humboldt along n side Bull Cr. (from w boundary of Park to Grasshopper Pk.(Squaw Cr.) rd,); South Fork Eel River, Bull Cr. flat Comment
  HSC59801  Hippuris vulgaris Clark L. Miller 1979-5-24 7155 Humboldt Clam beach ponds off Hwy. 101 N of McKinleyville Comment
  JEPS45722  Hippuris vulgaris W. L. Jepson 1921-8-7 9335 Humboldt Stone Lagoon Comment
  HSC36309  Hippuris vulgaris David Sohrakoff 1972-11-12 1 Humboldt Clam Beach ponds Comment
  HSC10132  Holcus lanatus J. R. Eichelberger 1964-5-13 83 Humboldt 1/4 mile from U.S. 101 on the N side of the Mad River. Comment
  HSC10142  Holcus lanatus R. I. Bonn 1965-5-9 50 Humboldt 4 miles W of Arcata on Lanphere Rd. Comment
  HSC37948  Holcus lanatus Peter Sorensen 1976-6-16 Humboldt Woodley Island. Comment
  HSC5261  Holcus lanatus John Warner Hosking 1966-8-5 Humboldt Near BSA, Humboldt State College campus, Arcata. Comment
  JEPS72924  Holcus lanatus Lincoln Constance 1934-6-11 849 Humboldt Bull Creek Region N. Dyerville Flat (trail along e bank of South Fork Eel River); e bank of South Fork Eel River, Bull Creek Region Comment
  SEINET181175 Image available Holcus lanatus Bassett Maguire, R Maguire; CB Maguire 1934-6-8 15060 Humboldt Coolidge, Redwood Park. Comment
  UC922018  Holcus mollis Joseph P. Tracy 1948-7-31 18079 Humboldt Eureka 30 Comment
  UCD84884  Holcus mollis R. N. Raynor 1935-6-7 s.n. Humboldt Fort Seward. Comment
  HSC57363  Holodiscus discolor Overton, Butler 1979-7-26 10068 Humboldt Near Cold Spring, close to the town of Willow Creek 1408 Comment
  HSC58168  Holodiscus discolor G. L. Clifton, Griswold 1979-8-2 12239 Humboldt Near Oregon Creek, close to the town of Hoopa 1663 Comment
  HSC72686  Holodiscus discolor J. P. Smith 1977-7-3 9260 Humboldt Six Rivers National Forest. FS Rd. 13N01, 3 mi. from its junction with Hwy. 36 549 Comment
  HSC74742  Holodiscus discolor Gail Newton 1981-7-24 2295 Humboldt Near Chaparral Mtn. 1512 Comment
  CAS-BOT-BC149898  Holodiscus discolor J. H. Thomas 1949-6-14 925 Humboldt Klamath River Valley between Weitchpec and Hoopa Comment
  HSC58607  Hordeum brachyantherum G. L. Clifton, Griswold 1979-7-25 10949 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1784 Comment
  HSC58655  Hordeum brachyantherum G. L. Clifton, Griswold 1979-7-31 11727 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1805 Comment
  HSC10120  Hordeum marinum subsp. gussoneanum True Hoyle 1967-7-9 27967 Humboldt By the cattle guard at the W side of the Roy Fulton Ranch, Iaqua Gun Club, Big Bend of the Mad River above Maple Creek. 610 Comment
  CAS-BOT-BC284756  Hordeum murinum subsp. glaucum Kenneth Clark 1980-5-10 644 Humboldt Shelter Cove. Point Delgada 3 Comment
  HSC41272  Hosackia oblongifolia Brad Klipfel 1974-6-25 418 Humboldt Horse Mtn., along the creek just above Horse Mtn. mine. Comment
  UC1239768  Hydrophyllum tenuipes Joseph P. Tracy 1937-7-2 15403 Humboldt head of Little Hors-Linto Creek; Trinity Summit 1371 Comment
  UC169025  Hydrophyllum tenuipes W. C. Blasdale 1896-6-3 Humboldt Blue Lake Comment
  UC180184  Hydrophyllum tenuipes Joseph P. Tracy 1914-6-7 4492 Humboldt Humboldt Bay Region; Northern Coast Region, Valley of North Fork of Eel River 0 Comment
  HSC53943  Hypericum anagalloides Griswold, Butler 1979-7-11 6982 Humboldt Near Snow Camp Lake, close to the town of Willow Creek. 1393 Comment
  UC1103553  Hypericum anagalloides Joseph P. Tracy 1935-7-25 14229 Humboldt Corral Prairie Trinity Summit, Corral Prairie 1584 Comment
  HSC13822  Hypericum anagalloides D. E. Anderson 1961-9-9 1801 Humboldt Big Lagoon County Park Comment
  HSC57100  Hypericum perforatum Overton, Butler 1979-7-25 9832 Humboldt Near Ammon Creek, close to the town of Willow Creek. 671 Comment
  HSC41265  Hypericum perforatum Brad Klipfel 1974-7-23 458 Humboldt Horse Mtn. along disturbed ridge rd. E of the towers 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
  CAS-BOT-BC401303  Hypericum scouleri Doris K. Kildale 1926-7-9 2337 Humboldt Bayside Comment
  UC204743  Hypochaeris radicata Joseph P. Tracy 1918-7-5 5022 Humboldt White Thorn Valley Northern Coast Ranges, White Thorn Valley 304 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
  UC902183 Image available Iliamna latibracteata Joseph P. Tracy 1946-7-28 17623 Humboldt Along Trinity Highway Willow Creek Canyon. 762 Comment
Read comments
Feb 27 2012
  JEPS804  Ipomopsis aggregata Joseph P. Tracy 1932-7-12 10440 Humboldt Corral Prairie Trinity Summit 1584 Comment
  UC1197890  Ipomopsis aggregata Joseph P. Tracy 1932-7-17 10657 Humboldt at Corral Prairie Trinity Summit 1584 Comment
  RSA366776  Iris Anonymous 1941-6-25 s.n. Humboldt Between Garberville [Garbervill Quad] and Pepperwood [Redcrest Quad] Comment
  HSC13869  Iris douglasiana W. A. Heaton 1965-4-10 22 Humboldt 0.5 mi. N of Trinidad State Park Comment
  HSC13893  Iris douglasiana W. F. Nickel 1965-4-23 Humboldt 10 mi. N of Arcata at Moonstone Beach Comment
  RSA40408  Iris douglasiana Philip A. Munz, Lee W. Lenz 1948-8-13 12350 Humboldt 8 miles east of Blue Lake, on Highway 299 305 Comment
  UC175825  Iris douglasiana Joseph P. Tracy 1912-4-21 3571 A Humboldt Humboldt Hill; Northern Coast Region, Humboldt Bay Region 0 Comment
  UC1196391  Iris macrosiphon Joseph P. Tracy 1930-5-25 8709 Humboldt Larrabee Valley 731 Comment
  UC709435  Iris macrosiphon Joseph P. Tracy 1941-3-23 16808 Humboldt 3 mi w Bridgeport (near e margin of redwood belt through s Humboldt County) 198 Comment
  HSC104075  Iris purdyi S. Carothers 2001-6-7 Humboldt Six Rivers National Forest; Lassics Botanical Area; below blue serpentine ridge, above Rd. 1S11 1585 Comment
  RSA114085  Iris purdyi Rimo C. Bacigalupi, L. Constance, Joseph P. Tracy, Reid V. Moran, R. L. Rodriguez, Sherwin Carlquist 1951-6-14 3414 Humboldt Near Snow Camp, ridge between Mad River and Redwood Creek, Bald Mountain 1433 Comment
  SD112455  Iris purdyi darley F. Howe 1972-5-6 4832 Humboldt 1.5 miles north of Phillipsville. Comment
  NY22146  Iris tenax subsp. klamathensis L. W. Lenz 1953-5-13 18296 Humboldt Wooded hillsides along Klamath River, Orleans Comment
  SEINET3875944  Iris tenax subsp. klamathensis T. Jimerson, J. Pageau 1979-4-27 438 Humboldt On Ishi Pishi Road, 1.7 mi. south of intersection with Forest Road 11N11, Orleans.; 0 213 Comment
  JEPS79909  Isatis tinctoria Joseph P. Tracy 1939-4-29 16239 Humboldt Klamath River at mouth of Slate Creek; Klamath River, Slate Creek 121 Comment
  UC1222653  Isatis tinctoria Joseph P. Tracy 1950-8-20 19316 Humboldt w side at mouth of Salmon River, Klamath River Salmon River; Klamath River, Salmon River Comment
  UCD115205  Isatis tinctoria S. S. Tillett 1956-7-6 606 Humboldt Above Klamath River, along Ishi Rish Road, 1 mi. n. of Orleans. 167 Comment
  UC667941  Isoetes howellii Joseph P. Tracy 1935-5-25 13841 Humboldt Fort Seward 106 Comment
  UC198638  Isolepis setacea Joseph P. Tracy 1917-6-17 4817 Humboldt around, Salmon Creek Valley Humboldt Bay; Northern Coast Ranges, , Salmon Creek Valley 30 Comment
  HSC13941  Ixia maculata R. van Weemen van Noord 1966-4-16 19 Humboldt 100 yds. S of N end of Samoa Drag St. 9 Comment
  CAS-BOT-BC340155  Jaumea carnosa Doris K. Kildale 1929-6-6 8484 Humboldt Stone Lagoon Comment
  HSC89905  Jaumea carnosa Leonel Arguello 1989-7-22 Humboldt Lanphere-Christensen Dunes Preserve, 3 mi. W of Arcata Comment
  CAS-BOT-BC340154  Jaumea carnosa C. C. Harris; S. K. Harris 1939-8-26 s.n. Humboldt South shore of Humboldt Bay Comment
  OBI36620  Jaumea carnosa David J. Keil 1983-7-2 17300 Humboldt Humboldt Bay salt marsh at Arcata Corp Yard Comment
  UC1199148  Jaumea carnosa J. P. Tracy 1901-8-7 1251 Humboldt salt marsh Samoa (immediate vicinity of Eureka) 0 Comment
  UC249540  Juncus balticus subsp. ater Joseph P. Tracy 1921-7-10 5855 Humboldt Big Lagoon Northern Coast Region 6 Comment
  HSC103408  Juncus bolanderi Ivy Watson 2008-10-5 34 Humboldt Blue Lake; ~ 500 ft. upstream of the Hatchery Rd. bridge, north bank. 22 Comment
  HSC67959  Juncus bolanderi Steve Selva, J. P. Smith 1970-6-14 3524 Humboldt Along Hwy. 96 at Whitmore Creek 152 Comment
  UC1152110  Juncus covillei Joseph P. Tracy 1934-7-14 13401 Humboldt near Blue Lake (along Mad River); Mad River 15 Comment
  UC184935  Juncus effusus subsp. pacificus Joseph P. Tracy 1912-7-25 3820 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  JEPS63893  Juncus effusus subsp. pacificus W. L. Jepson 1932-7-29 16440 Humboldt Weatt Comment
  SD51269  Juncus effusus subsp. pacificus Darley F. Howe 1961-8-2 Humboldt 8.5 miles east of Orick, on Bald Mounatin Road. 609 Comment
  HSC14019  Juncus ensifolius H. E. Parks, J. P. Tracy 1924-8-3 2400 Humboldt Big Lagoon Comment
  UC1152099  Juncus ensifolius Joseph P. Tracy 1930-7-17 8980 Humboldt near Mckay Camp; South Fork Mountain 1676 Comment
  UC249812  Juncus falcatus var. falcatus Joseph P. Tracy 1924-7-13 6723 Humboldt Big Lagoon Northern Coast Region 6 Comment
  JEPS63846  Juncus hesperius W. L. Jepson 1936-8-17 19709 Humboldt 2 mi s Field's Landing (near Still's ranch) Comment
  HSC76531  Juncus laccatus Michael Ericksen 1981-8-21 1088 Humboldt Near Dan East Cabin 1609 Comment
  UC212987  Juncus mertensianus Joseph P. Tracy 1919-9-22 5265 Humboldt Trinity Summit Northern Coast Ranges 1828 Comment
  RSA246772  Juncus nevadensis var. inventus Robert F. Thorne, Percy C. Everett 1965-8-9 35312 Humboldt Big Lagoon. 3 Comment
  JEPS67092  Juncus occidentalis Joseph P. Tracy 1926-7-5 7724 Humboldt Valley of South Yager Creek Northern Coast Ranges 762 Comment
  UCD141722  Juncus planifolius Peter F. Zika 2008-10-19 24229 Humboldt east side of Route 101, near Exit 728 for Trinidad Beach. 110 Comment
  SEINET11788655  Juncus xiphioides J. P. Tracy 1938-1 16171 Humboldt Lake Prairie Comment
  CAS-BOT-BC235891  Keckiella corymbosa C. Epling; Wm. Robison 1935-7-24 s.n. Humboldt Dyerville Comment
  UC582862  Keckiella corymbosa P. A. Munz 1936-8-9 14328 Humboldt 5 mi n Humboldt-Mendocino County line (south fork of Eel River); Eel River Comment
  JEPS11334  Kickxia elatine W. L. Jepson 1936-8-12 17878 Humboldt Phillipsville; South Fork Eel River Comment
  HSC73476  Koeleria macrantha Gail Newton 1980-7-11 1338 Humboldt Near Red Mtn. 1341 Comment
  CAS-BOT-BC273597  Koeleria pyramidata Harley P. Chandler 1901-6-1 1342 Humboldt North Coast Ranges. Hupa Indian Reservation 304 Comment
  JEPS52301  Kopsiopsis strobilacea Mr. and Mrs. Charles Young 1967-5-15 Humboldt Near Orleans. Comment
  UC552313  Lactuca biennis Joseph P. Tracy 1934-8-14 13583 Humboldt near Myers; North Coast Ranges 60 Comment
  RSA170203  Lactuca canadensis Joseph P. Tracy 1950-9-22 19368 Humboldt Klamath River, near Slate Creek. Below Orleans 8 miles. 122 Comment
  UC1051585  Lactuca saligna Joseph P. Tracy 1946-8-25 17650 Humboldt 15 Comment
  UCR122362  Lapsana communis George K. Helmkamp, E. A. Helmkamp 2001-7-8 6990 Humboldt North Coast, CA Hwy 36, along the Van Duzen River, 19.6 mi east of CA Hwy 101, west of Bar W Road 137 Comment
  POM208992  Lasthenia californica Lincoln Constance 1934-5-23 616 Humboldt Look Prairie, Bull Creek Watershed, Humboldt Redwood Park 366 Comment
  UC1199132  Lasthenia californica subsp. californica Joseph P. Tracy 1922-5-29 6083 Humboldt South Yager Creek valley Northern Coast Ranges, South Yager Creek valley 762 Comment
  HSC26359  Lasthenia maritima T. O. Osborne 1970-6-18 47 Humboldt Green Rock, 1-5/8 mi. N, 3/4 mi. W of Trinidad Lighthouse. Comment
  UC1222418  Lathyrus glandulosus Joseph P. Tracy 1949-6-20 18313 Humboldt 6 mi se Arcata; Fickle Hill 609 Comment
  HSC89295  Lathyrus latifolius K. Grenier 1989-10-6 367 Humboldt Arcata, E of Alliance Rd. .2 mi. S of junction of Alliance and Stromberg Rds. Comment
  CHSC110806  Lathyrus littoralis Dean Wm. Taylor 2013-5-9 21346 Humboldt North Coast. Highway 101 about 5 road miles South of Orick, beach west of the highway, opposite Freshwater Lagoon. 2 Comment
  HSC103970  Lathyrus littoralis C. Reynolds 2015-4-12 32 Humboldt Along Freshwater Beach, north of the Kuchel Visitor Center 1 Comment
  HSC14743  Lathyrus littoralis J. W. Johnson 1962-4-29 1298 Humboldt W.M. Lanphere Farm, Samoa Peninsula, Arcata. Comment
  RSA168910  Lathyrus nevadensis subsp. nevadensis Joseph P. Tracy 1942-6-23 17226 Humboldt Trinity Summit Ridge top one mile west of Mud Springs. Comment
  CAS-BOT-BC205044  Lathyrus palustris Kenneth Clark 1980-3-27 560 Humboldt Shelter Cove. South of Dead Man's Gulch 182 Comment
  HSC97914  Lathyrus polyphyllus Cara Witte 2007-6-14 279 Humboldt Along National Forest 1. Near Kinsey Ridge. 3/4 mile south of intersection with 4N06. 1256 Comment
  SEINET202727  Lathyrus polyphyllus Joseph Tracy 1948-7-11 18074 Humboldt Willow Creek Canyon along Trinity Highway Comment
  SEINET956148  Lathyrus polyphyllus Joseph P. Tracy 1923-1 6344 Humboldt Bald Mt. 914 Comment
  HSC100520  Lathyrus torreyi Carl C. Marshall Jun 1886 319 Humboldt Trail E of Hoopa. Comment
  UC931756  Lathyrus vestitus C. L. Hitchcock 1949-6-8 19096 Humboldt 2 mi w Blue Lake (along Highway 299) Comment
  UC1222398  Lathyrus vestitus Joseph P. Tracy 1949-7-4 18327 Humboldt 2 mi e Kneeland (on the Butter Valley Road) 609 Comment
  RSA64951  Lathyrus vestitus subsp. bolanderi C. L. Hitchcock 1949-6-8 19087 Humboldt 1 mile SE of Willow Creek, along Highway #299. Comment
  CAS-BOT-BC325926  Layia carnosa Harley P. Chandler 1901-5-1 1150 Humboldt Humboldt Bay 3 Comment
  CAS-BOT-BC325994  Layia carnosa David D. Keck; J. Clausen 1935-6-16 3381 Humboldt Mouth of Little River. Comment
  CAS-BOT-BC325995  Layia carnosa David D. Keck; J. Clausen 1935-6-16 3381 Humboldt Mouth of Little River. Comment
  HSC39959  Layia carnosa Linda M. Barker 1976-4-13 1377 Humboldt Lanphere-Christensen Dunes, 3 mi. W of Arcata Comment
  RSA518828  Lepidium Joseph P. Tracy 1933-8-22 12992 Humboldt Mouth of Eel River. 3 Comment
  CAS-BOT-BC12876  Lepidium strictum Elizabeth Parsons Hawver 1915-6-1 s.n. Humboldt Carlotta. Comment
  HSC74229  Leptosiphon ciliatus M. A. Baker 1980-7-15 2958 Humboldt Near Whiting Ridge. 1341 Comment
  HSC95585  Leucanthemum vulgare Andrea Pickart 2002-7-8 159 Humboldt N Spit Dunes, Mad River Co. Park, near parking area. 0 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
  HSC48392  Lewisia leeana Brad Klipfel 1973-6-10 152 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC98516  Lewisia triphylla C. Witte 2007-5-18 45 Humboldt Near Bottleneck Spring. 1575 Comment
  CAS-BOT-BC283514  Leymus X vancouverensis Malcom A. Nobs; S. Galen Smith 1949-8-3 1204 Humboldt Salt marshes bordering Humboldt Bay, ca 2 miles N of Eureka Comment
  RSA10139  Leymus vancouverensis Joseph P. Tracy 1930-7-21 8894 Humboldt Cape Mendocino, south of point of the Cape 3 Comment
  HSC99076  Ligusticum apiifolium Cara Witte 2007-7-3 405 Humboldt National Forest 1 on Kinsey Ridge. 1/4 mile south of intersection with 4N06. Near power poles. 1231 Comment
  HSC49055  Ligusticum californicum Patricia Shesgreen 1978-8-2 123 Humboldt Arcata Community Forest, 100 yds N of field house, 25 ft from pond Comment
  CAS-BOT-BC508390  Lilium columbianum V. Rattan 1879-1-1 s.n. Humboldt Klamath Comment
  CAS-BOT-BC130634  Lilium kelloggii Doris K. Kildale 1925-6-28 790 Humboldt Kneeland Prairie 609 Comment
  CAS-BOT-BC130635  Lilium kelloggii Albert Vollmer 1949-7-1 3 Humboldt 3 miles east of the old Eureka-Arcata Road on the Kneeland road Comment
  UC175928  Lilium occidentale Joseph P. Tracy 1912-6-16 3705 Humboldt near Indianola (on Table Bluff); Northern Coast Region, Humboldt Bay Region 0 Comment
  UC176167  Lilium occidentale Joseph P. Tracy 1912-9-1 3982 Humboldt Eureka Northern Coast Region (near Ryan's Slough Hill) 0 Comment
  CAS-BOT-BC130732  Lilium pardalinum Doris K. Kildale 1928-7-25 5693 Humboldt Chalk Mountain 914 Comment
  UC201617  Lilium pardalinum Joseph P. Tracy 1918-7-5 5003 Humboldt White Thorne Valley Northern Coast Ranges, Mattole River (banks of Mattole River) 304 Comment
  UC666953  Lilium pardalinum Joseph P. Tracy 1932-7-13 10514 Humboldt Corral Prairie; Trinity Summit 1584 Comment
  CAS-BOT-BC130728  Lilium pardalinum Albert Vollmer 1949-7-1 2 Humboldt On Bald Mountain Comment
  UC30065  Lilium pardalinum Chesnut and Drew 1888-7-20 Humboldt Pilot Creek Comment
  HSC63174  Lilium rubescens M. A. Baker 1979-7-10 1020 Humboldt S of Dragsaw Spring along USFS Rd. 13N01 Comment
  HSC63016  Limnanthes douglasii subsp. nivea David Wheeler 1979-5-23 136 Humboldt About 1/2 mi. towards Bridgeville from the Jct. at High Prairie. Comment
  POM266012  Limnanthes douglasii subsp. nivea Lincoln Constance, R. C. Rollins 1942-5-21 s.n. Humboldt Two miles north of Harris. 762 Comment
  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
  SEINET200735  Linanthastrum nuttallii J. P. Tracy 1936-8-2 15063 Humboldt French Camp Ridge 1067 Comment
  UC1005678  Linanthus androsaceus Frank W. Gould 1939-5-30 834 Humboldt about 25 mi due e Eureka (near lower end of mountain road); Horse Mountain 304 Comment
  UC60871  Linanthus bicolor Harley P. Chandler Jun 1901 1417 Humboldt Klamath River North Coast Ranges 243 Comment
  UC1198544  Linanthus bolanderi Joseph P. Tracy 1922-5-29 6073 Humboldt near head of South Yager Creek; Northern Coast Ranges 762 Comment
  UC1239561  Linnaea borealis var. longiflora Joseph P. Tracy 1926-6-6 7579 Humboldt near summit on road w from Hoopa to Bair's Hoopa Mountain; Northern Coast Ranges, Hoopa Mountain 1066 Comment
  HSC43105  Linum grandiflorum Maralyn O'Meara 1974-5-14 358 Humboldt Along Hwy. 36 ca. 2.4 mi. E of Bridgeville. Comment
  JEPS19995  Lipocarpha aristulata Joseph P. Tracy 1931-9-7 9650 B Humboldt Trinity River Valley, at Willow Creek Willow Creek; Trinity River Valley, Willow Creek 152 Comment
  UC666981  Listera caurina Joseph P. Tracy 1937-8-12 15648 Humboldt Snow Camp 1402 Comment
  UC400346  Lithocarpus densiflorus unknown Humboldt above Korbel Comment
  CAS-BOT-BC36104  Lithocarpus densiflorus var. densiflorus Carl D. Duncan 1920-9-22 s.n. Humboldt Hoopa Valley Comment
  CAS-BOT-BC36107  Lithocarpus densiflorus var. densiflorus Henry M. Pollard 1948-8-4 s.n. Humboldt Orleans Mt. Trail 762 Comment
  JEPS81106  Lithocarpus densiflorus var. densiflorus Thomas W. Nelson and Jane P. Nelson 1978-2-5 3760 Humboldt Kneeland; e side of junction of Kneeland and Maple Creek roads 670 Comment
  HSC20227  Lithophragma affine G. N. Bos 1965-5-15 266 Humboldt 2 mi. W of Berry Summit along U.S. 299. 701 Comment
  UC1196491  Lithophragma affine Harold E. Parks and Joseph P. Tracy 1942-5-16 11558 B Humboldt vicinity Garberville; vicinity of Garberville 152 Comment
  HSC32287  Lithophragma campanulatum D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5633 Humboldt Senteney Rock, a large barren Franciscan Rock along Swayback Ridge. Comment
  HSC97180  Lithophragma campanulatum Benjamin Hart, Erin Lonergan 2007-6-13 10 Humboldt 1 mi. E of USFS Rd. NF1 on 5N04 1524 Comment
  UCD66191  Lolium multiflorum Malcolm A. Nobs; S. Galen Smith 1949-8-3 1177 Humboldt Around Fields Landing. Comment
  UC50705  Lolium perenne J. Burtt Davy 1899-6-18 5518 Humboldt Pepperwood bottoms; North Coast Ranges, Pepperwood bottoms Comment
  UCD66413  Lolium perenne Linda M. Barker 1976-7-5 1646 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  UC1103158  Lolium temulentum Joseph P. Tracy 1909-8-1 3064 Humboldt Kneeland Prairie; Northern Coast Ranges, Kneeland Prairie 762 Comment
  UC552790  Lolium temulentum Joseph P. Tracy 1935-5-25 13893 Humboldt Dobbyn Creek; Northern Coast Ranges, Dobbyn Creek 152 Comment
  HSC45394  Lomatium ciliolatum var. ciliolatum Thomas W. Nelson, Jane P. Nelson 1977-7-4 3582 Humboldt Along W side of road N of Alder Springs, head of N Fork of Conley Creek 1280 Comment
  HSC36190  Lomatium dasycarpum subsp. dasycarpum Thomas W. Nelson, Jane P. Nelson, James Nelson 1975-6-14 1898 Humboldt Beside branch off FS 2S08 to Pine Mtn. Comment
  UC1197164  Lomatium dasycarpum subsp. dasycarpum Joseph P. Tracy 1942-6-23 17229 Humboldt 1 mi. w. Box Camp (on summit of ridge on Hoopa trail, Trinity Summit); Trinity Summit 1219 Comment
  HSC21575  Lomatium dasycarpum subsp. dasycarpum Francis Winter 1960-4-24 Humboldt 1 mi. W of Burnt Ranch 381 Comment
  HSC97232  Lomatium macrocarpum Kiera Freeman, Heather J. Perry 2007-6-4 1 Humboldt Cold Springs Camp, 8.0 mi. S of Hwy. 299 on NF1 1372 Comment
  SD264747  Lomatium utriculatum Tracey Call, Viola Call 1964-6-19 2271 Humboldt Dry, west-facing hillside 1 mile north of Harris P.O. and ca 3I(c) miles south of Harris Jct. 609 Comment
  UC1714579  Lomatium utriculatum J. P. Tracy 1904-5 2116 Humboldt immediate vicinity Eureka (restricted to small patch on bluff at Bucksport); Bucksport 0 Comment
  UC1239546  Lonicera ciliosa Joseph P. Tracy 1930-7-19 9086 Humboldt near McKay Camp; South Fork Mountain 1676 Comment
  HSC41001  Lonicera conjugialis J. O. Sawyer 1975-10-17 2711 Humboldt S slopes of N Trinity Mtn. Comment
  HSC81687  Lonicera conjugialis Thomas W. Nelson 1979-7-11 5001 Humboldt N Trinity Mtn. and ridge to E. 1829 Comment
  RSA168961  Lonicera conjugialis Joseph P. Tracy 1950-8-8 19287 Humboldt Croghan Hole, on Trinity Summit 1677 Comment
  CAS-BOT-BC240473  Lonicera hispidula Henry M. Pollard 1946-9-6 s.n. Humboldt Near Woodson Mine, Orleans region Comment
  RSA43892  Lonicera hispidula var. vacillans H. M. Pollard 1948-7-21 s.n. Humboldt Near Orleans. Comment
  HSC95659  Lonicera hispidula var. vacillans Steven Lee 2004-4-25 22 Humboldt South Fork Rd., from Hwy. 299 to County Rd. 341, 1/8 mi. down river access trail at end of Rd. Comment
  HSC100411  Lonicera involucrata Carl C. Marshall Jun 1886 234 Humboldt Vicinity of Humboldt Bay. Comment
  RSA455681  Lonicera involucrata Hutchinson 1927-05 s.n. Humboldt [No location data on label] Comment
  SD88513  Lonicera involucrata Darley F. Howe 1972-6-30 Humboldt Trinidad Comment
  HSC3922  Lonicera involucrata var. ledebourii C. B. Wolf 1927-8-29 1204 Humboldt Near mouth of Bear River, Capetown. Comment
  HSC83836  Lonicera involucrata var. ledebourii F. R. Fosberg 1948-8-28 30053 Humboldt Dry Lagoon. Comment
  CAS-BOT-BC200913  Lotus Doris Kildale 1931-5-10 10680 Humboldt Snow Camp Comment
  RSA406778  Lotus corniculatus J. P. Smith, T. W. Nelson 1977-6-30 9206 Humboldt Samoa Peninsula just east of the drag strip. Comment
  UCD106722  Lotus corniculatus S. P. Lynch 1975-6-19 1368 Humboldt Along U.S. Hwy 101 at Loleta. Comment
  UCSB30598  Lotus corniculatus Edwards, David 1974-7-13 Humboldt North side of 7th St. just W of its overpass of U.S. 101, Arcata 18 Comment
  UC1223436  Lotus crassifolius var. crassifolius Joseph P. Tracy 1936-6-9 14914 Humboldt near Panther Gap (on the Bull Creek-Mattole Road) 609 Comment
  HSC98249  Lotus formosissimus H. E. Parks, S. T. Parks Jun 1952 24449 Humboldt Spruce Cove, Trinidad 61 Comment
  HSC44376  Lotus humistratus Thomas W. Nelson, Jane P. Nelson 1977-6-19 3512 Humboldt SW of Alder Springs along Rd. 2S08. 1524 Comment
  UC1223417  Lotus purshianus var. purshianus Joseph P. Tracy 1938-6-29 15976 Humboldt opposite Willow Creek; Trinity River Comment
  UC495719  Lotus tenuis Mrs. C. M. Wilder 1924-6-1 Humboldt w of Bridgeville (at Kemps Maple Grove Ranch); Van Duzen River 152 Comment
  HSC38527  Lotus unifoliolatus var. unifoliolatus D. E. Anderson, J. P. Smith 1971-6-18 - 1069 Humboldt Chezem Rd., about 3 mi. E of bridge over Redwood Creek Comment
  HSC98994  Lotus unifoliolatus var. unifoliolatus Cara Witte 2008-8-16 1021 Humboldt Forest Service Road 5N10. 1/4 mile east of intersection with National Forest 1. 1359 Comment
  UC495723  Lotus wrangelianus Joseph P. Tracy 1932-5-1 9886 Humboldt vicinity Garberville; Northern Coast Ranges 121 Comment
  UC1197298  Lotus wrangelianus Joseph P. Tracy 1918-7-1 4978 Humboldt 3 mi s Point of Cape; Northern Coast Ranges, Cape Mendocino 3 Comment
  UC1197306  Lotus wrangelianus Joseph P. Tracy 1931-6-14 9578 Humboldt Alton, along Van Duzen River North Coast Ranges, Van Duzen River 30 Comment
  CAS-BOT-BC342558  Luina hypoleuca Carl B. Wolf 1937-8-9 9086 Humboldt Klamath River, 5 7/10 mi. above Orleans Comment
  SEINET11810522  Luina hypoleuca J. P. Tracy 1944-1 17489 Humboldt near Romanzoffia Creek, Willow Creek Canyon, along Trinity Highway 366 Comment
  UC1223260  Lupinus arboreus Joseph P. Tracy 1934-7-21 13482 Humboldt Samoa Sand Dunes Comment
  RSA1902  Lupinus arboreus var. arboreus Carl B. Wolf 1930-10-28 1036 Humboldt Samoa. 15 Comment
  RSA25890  Lupinus arboreus var. arboreus Carl B. Wolf 1937-9-9 3654 Humboldt 2 miles S of Cape Mendocino. 6 Comment
  RSA407032  Lupinus arboreus var. arboreus E. A. Purer 1932-7-27 4150 Humboldt Samoa. Comment
  HSC14790  Lupinus bicolor J. R. Woodside 1963-5-19 1 Humboldt 1 1/4 mi. N of Fairhaven Comment
  UC1197280  Lupinus bicolor Joseph P. Tracy 1908-6-9 2668 Humboldt Kneeland Prairie; Northern Coast Ranges, Kneeland Prairie 762 Comment
  SEINET6932626 Image available Lupinus bicolor Wanda P. Vestal, A. G. Vestal 1937-6-23 s.n. Humboldt Saddle near east end of Bald Hills, southeast of Orick. Comment
  SEINET12154561  Lupinus latifolius H. P. Chandler 1901-1 1365 Humboldt Kalmath River 152 Comment
  SEINET12154563  Lupinus latifolius J. P. Tracy 1936-1 15036 Humboldt Grouse Mtn 1524 Comment
  SEINET12154564  Lupinus latifolius J. P. Tracy 1941-1 16916 Humboldt Panther Gap on the Bull Crk - Mattole Rd Comment
  RSA12559  Lupinus latifolius var. latifolius Carl B. Wolf 1934-7-2 5880 Humboldt Snow Camp. (Mountains east of Korbel). 1372 Comment
  UC1223291  Lupinus latifolius var. latifolius Joseph P. Tracy 1941-6-15 16916 Humboldt on the Bull Creek - Mattole Road Panther Gap (Panther Gap) Comment
  UCD107974  Lupinus littoralis Joseph P. Tracy 1900-7-4 870 Humboldt Ocean Beach at Humboldt Bay. Comment
  UC169350  Lupinus luteolus Joseph P. Tracy 1912-7-26 3871 Humboldt Kneeland Prairie; Northern Coast Ranges, Kneeland Prairie 762 Comment
  UC170030  Lupinus nanus Joseph P. Tracy and Ernest B. Babcock 1912-5-11 3623 Humboldt hillsida at Alton; Northern Coast Region 30 Comment
  RSA413832  Lupinus polyphyllus var. grandifolius Carl B. Wolf 1937-8-11 2906 Humboldt 1/2 mile east of Alton. 21 Comment
  UC157015  Lupinus polyphyllus var. polyphyllus Joseph P. Tracy 1906-6-24 2495 Humboldt near Fields Landing; Northern Coast Region, Region about Humboldt Bay 0 Comment
  HSC14864  Lupinus rivularis T. W. Beck 1963-4-27 36 Humboldt Humboldt Meridian. Camp Bauer, Korbel. Near the Mad River. Comment
  SEINET12154707  Lupinus sellulus J. P. Tracy 1933-1 12350 Humboldt Gasquet 91 Comment
  HSC14889  Lupinus variicolor J. W. Johnson 1962-4-19 1279 Humboldt Manila, Samoa Peninsula Comment
  SEINET12154787  Lupinus variicolor J. P. Tracy 1938-1 15940 Humboldt Brainards Point, betw Eureka and Arcata Comment
  HSC56410  Luzula comosa Griswold, Butler 1979-7-11 7044 Humboldt Near Snow Camp Lake, close to the town of Willow Creek. 1393 Comment
  HSC73161  Luzula comosa M. A. Baker 1980-6-7 1802 Humboldt Near Brush Mtn. 1128 Comment
  CHSC117678  Luzula macrantha Peter F. Zika 2011-7-3 25500 Humboldt Titlow Hill Road, near junction with Forest Road 6N36, 1 air mile S of Horse Mountain, Outer North Coast Ranges. 1410 Comment
  HSC45017  Luzula multiflora subsp. multiflora R. Sutherland 1978-4-24 4 .24478 Humboldt Kinsey Ridge above Oat Creek 396 Comment
  HSC70988  Luzula parviflora Gail Newton 1980-7-20 1649 Humboldt Near Bell Swamps. 1426 Comment
  HSC59471  Luzula parviflora M. A. Ericksen 1979-5-9 261 Humboldt Behind Jolly Giant Creek HSU campus, Arcata Comment
  RSA54022  Luzula parviflora E. K. Balls, Lee W. Lenz 1956-6-12 21662 Humboldt 4.4 miles SW from Willow Creek along U. S. Highway 299 to Arcata. 366 Comment
  SEINET8717658 Image available Luzula parviflora H. E. Parks, S. T. Parks 1952-1 22446 Humboldt Bishop Pine Lodge. Trinidad. Comment
  UC183767  Luzula subsessilis Joseph P. Tracy 1914-5-14 4443 Humboldt Fort Seward Northern Coast Ranges, Fort Seward 121 Comment
  HSC906  Lycopodiella inundata D. E. Anderson 1961-9-13 1803 Humboldt Big Lagon Bog, Big Lagoon County Park Comment
  RSA246934  Lycopodiella inundata R. F. Thorne, Percy C. Everett 1965-8-7 35192 Humboldt Big Lagoon, south end. 2 Comment
  HSC77926  Lycopodium clavatum L. P. Janeway 1984-3-14 715 Humboldt Arcata Community Forest, at edge of access road, NW-facing slope. 229 Comment
  UCD135967  Lycopodium clavatum K. Niles 1950-10-1 s.n. Humboldt Loleta. Comment
  HSC62983  Lysichiton americanus David Wheeler 1979-4-20 Humboldt Clam Beach Ponds, N pond, 0.25 mi. S of Crannel Rd. between the frontage road and Hwy. 101 Comment
  HSC96513  Lysichiton americanus Gordon Leppig 1999-4-15 1114 Humboldt Big Lagoon County Park, Big Lagoon Bog 3 Comment
  SBBG25590  Lysichiton americanus E. R. Blakley 1966-8-17 6795 Humboldt Little Crk, Prairie Crk St Park, ca. 10 mi N of Orick 60 Comment
  UC1198266  Lysichiton americanus Joseph P. Tracy 1947-5-24 17690 Humboldt Big Lagoon 9 Comment
  UC34916  Lysichiton americanus W. C. Blasdale 1896-6-4 Humboldt Eureka Comment
  HSC15932  Lythrum hyssopifolia Lincoln Constance 1934-5-27 693 Humboldt S Fork of Eel River, S end of Dyerville Bridge 46 Comment
  RSA21082  Madia exigua C. B. Wolf 1937-6-19 8910 Humboldt Van Duzen River, 0.3 mi. above Bridgeville. 122 Comment
  UC127609  Madia gracilis Mrs. M. H. Manning June, 1902 Humboldt Hupa Comment
  HSC98983  Madia gracilis Cara Witte 2007-7-3 403 Humboldt National Forest 1 on Kinsey Ridge. 1 1/2 miles north of intersection with 4N09. 1396 Comment
  SBBG34731  Madia gracilis T. L. Secrest 1948-7-1 Humboldt near Hwy 101, southern Humboldt county Comment
  UC175195  Madia gracilis Joseph P. Tracy 1913-6-22 4258 Humboldt Dinsmore's Ranch; Valley of Van Duzen River, Buck Mountain 762 Comment
  UC175981  Madia gracilis Joseph P. Tracy 1908-6 2796 Humboldt Valley of Van Duzen River; Northern Coast Ranges, Buck Mountain 762 Comment
  POM54277  Madia gracilis subsp. gracilis M. H. Manning 1902-06 s.n. Humboldt Hupa Comment
  RSA66977  Madia madioides E. K. Balls 1951-5-9 16515 Humboldt ca. 5 miles S of Richardson's Grove, Highway 101. Comment
  CAS-BOT-BC343590  Madia sativa J. Clausen 1932-9-18 678 Humboldt 11 miles south of Ferndale on the road to Capetown Comment
  HSC91907  Madia sativa E. Mackey 1978-7-19 Humboldt Patrick's Point State Park; middle of the road near cliffs Comment
  UC495630  Madia sativa Joseph P. Tracy 1927-6-18 8176 Humboldt three mi s of point Cape Mendocino (southwestern slopes, fronting the ocean); Northern Coast Ranges, Cape Mendocino 3 Comment
  HSC99058  Mahonia pinnata subsp. pinnata Cara Witte 2008-7-2 802 Humboldt Forest Service Road 4N38. 2 miles north of intersection to Board Camp Lookout. Near gate. 1401 Comment
  SEINET3992052  Maianthemum bifolium H. E. Parks 1932-5-1 Humboldt Bishop Pine Lodge Comment
  HSC31344  Maianthemum dilatatum Larry E. DeBuhr, G. D. Wallace 1972-5-22 606 Humboldt 25 mi. N of Arcata at the S end of Big Lagoon Comment
  UC212992  Maianthemum dilatatum Joseph P. Tracy 1920-4-25 5316 Humboldt Eureka Northern Coast Ranges, Eureka 0 Comment
  RSA232642  Maianthemum dilatatum Larry E. DeBuhr, Gary D. Wallace 1972-5-22 606 Humboldt About 25 miles north of Arcata on the south end of Big Lagoon. Comment
  HSC40874  Maianthemum racemosum subsp. amplexicaule Thomas W. Nelson 1976-7-9 3005 Humboldt S of Mt. lassic 1707 Comment
  HSC99006  Maianthemum racemosum subsp. amplexicaule Cara Witte 2007-6-13 259 Humboldt Along Forest Service Road 5N04. 1/4 mile east of spring near Grouse Mountain. 1564 Comment
  SDSU19200  Maianthemum stellatum Michael G. Simpson, Michael Mesler and Michael Mayer 2008-5-27 3010 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. 1401 Comment
  POM56123  Malacothrix floccifera Joseph P. Tracy 1918-7-6 5049 Humboldt South Fork of Eel River near the Humboldt-Mendocino County Line 152 Comment
  POM98598  Malacothrix floccifera F. W. Peirson 1926-7-14 s.n. Humboldt Sandy shores of Eel River about 5 miles south of Scotia Comment
  POM87681  Malus fusca L. R. Abrams 1922-6-25 8280 Humboldt Big Lagoon. South of Orick. Comment
  RSA319241  Malus fusca Patricia Wilder 1968-8-21 4387 Humboldt Bog in Big Lagoon Park, just west of Hwy 101; Mt. Range: Coast range; Drainage Area: Big Lagoon to Pacific Ocean. 2 Comment
  SJSU11758  Marah oregana R. D. Spadoni 1965-3-26 Humboldt Trinidad Comment
  UC168942  Marah oregana Joseph P. Tracy 1911-8-27 3532 Humboldt Eureka Northern Coast Region 0 Comment
  HSC69639  Marah oregana R. Kalal 1980-5-19 20 Humboldt Arcata, Humboldt State University campus, Union St. near 14th St. 40 Comment
  HSC91615  Marah oregana E. Mackey 1987-5-7 Humboldt Patrick's Point State Park, Palmer's Point, at beginning of trail to beach. Comment
  UC204870  Matricaria occidentalis Joseph P. Tracy 1918-6-16 4955 Humboldt Eureka Northern Coast Ranges 0 Comment
  HSC14971  Medicago polymorpha R. T. Forester 1963-3-29 50 Humboldt 1/4 mi. N of Fairhaven on Samoa Rd. Comment
  UC1145132  Melica aristata Joseph P. Tracy 1948-8-15 18157 Humboldt 2 mi e Grove's Prairie (on ridge, Trinity Summit); Trinity Summit 1524 Comment
  BLMAR49  Melica californica Brad Barr June, 1982 49 Humboldt King range, Spanish ridge west facing slope Comment
  HSC10337  Melica californica J. A. Waller 1965-5-2 31 Humboldt Along Hwy. 96 near Willow Creek. Comment
  HSC10347  Melica geyeri A. H. Murphy 1951-4-18 21 Humboldt Ft. Seward next to railroad right of way. 183 Comment
  HSC70380  Melica geyeri M. A. Baker 1980-6-7 1795 Humboldt Near Brush Mountain. 1128 Comment
  UC1132276  Melica harfordii H. L. Person 1932-5-12 Humboldt 10 mi n Garberville (Redwood Highway); Briceland Quad. Comment
  UCD87511  Melica harfordii August L. Hormay 1932-5-12 s.n. Humboldt Bull Creek Road. Comment
  UCD87523  Melica harfordii P. B. Kennedy 1916-6-1 s.n. Humboldt Eureka. Comment
  SEINET10860833  Melica stricta Joseph P. Tracy 1935-7-28 Tracy 14333 Humboldt Shell rock slopes. Trinity Summit. Rocky Exposed Places, Head of Brett Hole. 1829 Comment
  HSC10366  Melica subulata E. W. Styskel 1963-5-16 30 Humboldt 3.0 mi. SE of Korbel on Snow Camp Rd. 290 Comment
  HSC38428  Melica subulata Dennis Anderson, J. P. Smith 1971-6-18 - 1055 Humboldt 1 mi. W of Lord Ellis Summit. Comment
  HSC71789  Melica subulata Gail Newton 1980-6-16 181 Humboldt Near Monks Camp. 1097 Comment
  UCD88599  Melica subulata A. A. Beetle; G. L. Stebbins Jr. with J. P. Tracy 1942-6-2 3475 Humboldt 4 miles north of Bridgeville. Comment
  HSC79465  Melica torreyana Kenneth Clark 1980-4-18 609 Humboldt Along access trail to Deadman's Gulch. 46 Comment
  HSC15519  Melilotus albus C. Kline 1970-11-9 66 Humboldt .5 mi. N of Bayside, Bayside Rd. Comment
  HSC15523  Melilotus indicus Jana Kattenhorn 1970-10-28 154 Humboldt Mad River at the mouth of Lindsey Creek, N Bank Rd. off Hwy. 299 Comment
  RSA152465  Mentha aquatica Joseph P. Tracy 1943-11-14 17451 Humboldt Field s Landing, 2 miles from town 6 Comment
  HSC12369  Mentha canadensis C. E. Fellows 1970-10-27 376 Humboldt Banks of Mad River 1/8 mi. W of Lindsey Creek Comment
  POM174071  Mentha canadensis Joseph P. Tracy 1918-9-29 5105 Humboldt South Fork of Eeel River 4 miles above the mouth. Comment
  UC213509  Mentha spicata Joseph P. Tracy 1919-9-14 5207 Humboldt borders Lack Pond (Trinity River Valley near Willow Creek); Northern Coast Ranges, Trinity River Valley nr Willow Creek 152 Comment
  JEPS80899  Menziesia ferruginea B. A. Bohm, K. W. Nichols 1981-5-11 1571 B Humboldt Prairie Creek area, Mile 125.00, US Hwy 101 Prairie Creek area; , Mile 125.00, US Hwy 101 Comment
  HSC7850  Menziesia ferruginea subsp. ferruginea F. Morrell 1949-4-22 11 Humboldt Back Humboldt State University fish hatchery Comment
  BLMAR735  Micropus californicus Jennifer Wheeler 2015-5-12 735 Humboldt King range, Along Telegraph Ridge btwn Oat and Spanish 670 Comment
  RSA293124  Micropus californicus Thomas W. Nelson, Jane P. Nelson 1976-5-30 2621 Humboldt McKeown Ranch north of Dinsmore. Comment
  UC582506  Micropus californicus var. californicus Joseph P. Tracy 1927-7-4 8235 Humboldt Iaqua 609 Comment
  HSC32151  Microsteris gracilis D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5613 Humboldt Mt. Lassic and two smaller peaks to immediate E 1768 Comment
  HSC98611  Microsteris gracilis var. gracilis C. Witte 2007-5-10 15 Humboldt Buck Flat. Intersection of National Forest 1 and 5N01. 1552 Comment
  UC147913  Mimulus alsinoides Joseph P. Tracy 1908-6-8 2634 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  UC124422  Mimulus dentatus V. Rattan 1882-1 Humboldt Humboldt Bay Comment
  UC582601  Mimulus douglasii Joseph P. Tracy 1925-5-24 7012 Humboldt Kneeland Prairie 762 Comment
  HSC100670  Mimulus glutinosus Carl C. Marshall Apr 1886 56 Humboldt Hills near coast. Comment
  UC1011930  Mimulus grandis F. W. Pennell and J. P. Tracy 1940-7-8 26107 Humboldt e Eureka; Freshwater 9 Comment
  HSC20726  Mimulus guttatus H. D. Sumner 1959-7-13 Humboldt Dirt road to Hoopa 305 Comment
  JEPS25699  Mimulus guttatus P. C. Hutchison 1961-5-22 2033 Humboldt 1/2 mi above Somes Bar (Hiway 299 ca. 100 ft. from Siskiyou Co. line) Comment
  JEPS10789  Mimulus inodorus Joseph P. Tracy Jul 16 1930-Jul 19 1930 8983 Humboldt McKay Camp Northern Coast Ranges, South Fork Mountain 1676 Comment
  UC1196812  Mimulus kelloggii Joseph P. Tracy 1922-5-29 6080 Humboldt head South Yager Creek; Northern Coast Ranges 762 Comment
  CDA41715  Mimulus kelloggii K. Esau 1935-4-23 s.n. Humboldt Ft. Seward. 0 Comment
  RSA535811  Mimulus kelloggii David M. Thompson 1986-3-26 856 Humboldt Somes Bar. Along Hwy 96, 100 ft S of Siskiyou Co. line; at confluence of Klamath and Salmon rivers. 61 Comment
  HSC48319  Mimulus moschatus Brad Klipfel 1973-8-3 310 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC100673  Mimulus moschatus Carl C. Marshall Sep 1886 248 Humboldt Ravines, etc. Comment
  POM273194  Mimulus moschatus var. sessilifolius Lyman Benson 1929-7-19 1873 Humboldt Mouth of Matole River. Comment
  HSC44818  Mimulus nanus var. nanus Thomas W. Nelson, Jane Nelson 1977-6-19 3487 Humboldt Along road on Goat Hill; unsurveyed section east of Section 12 1616 Comment
  HSC49137  Mimulus pilosus R. Becking 1979-7-29 Humboldt Van Duzen River at Cheatam Grove E of Carlotta Comment
  JEPS28974  Mimulus pulsiferae Joseph T. Gregory 1933-7-25 473 Humboldt Titlow Mt. 1371 Comment
  UC147905  Mimulus pulsiferae Joseph P. Tracy 1908-6 2698 Humboldt opposite Buck Mountain (along stream); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  HSC48677  Mimulus tilingii Brad Klipfel 1973-7-31 252 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  UC1198330  Minuartia douglasii Joseph P. Tracy 1911-7-4 3299 Humboldt Willow Creek Northern Coast Ranges (near mouth, tributary of Trinity River) 182 Comment
  JEPS49672  Mitella trifida Joseph P. Tracy 1932-7-13 10503 Humboldt near Corral Prairie; Klamath Mountains, Trinity Summit 1524 Comment
  HSC48859  Moehringia macrophylla Brad Klipfel 1974-5-27 392 Humboldt Horse Mtn. area, Titlow Hill 1494 Comment
  UC229833  Mollugo verticillata Joseph P. Tracy 1921-10-16 5972 Humboldt near Willow Creek (Trinity River Valley); Northern Coast Ranges, Trinity River Valley 152 Comment
  UC577361  Monardella odoratissima subsp. glauca Joseph P. Tracy 1933-7-26 12913 Humboldt Grouse Mountain North Coast Ranges 1630 Comment
  HSC57898  Monardella odoratissima subsp. pallida Overton, Butler 1979-7-31 11478 Humboldt Near N Trinity Mtn., close to the town of Hoopa 1940 Comment
  RSA0022793  Monardella villosa subsp. subserrata C. Epling, Wm. Robinson 1935-7-24 s.n. Humboldt Dyerville. Comment
  RSA29091  Montia diffusa Lincoln Constance, A. A. Beetle 1940-5-17 2615 Humboldt In Shade of Cornus and Sambucus, cutover Pseudotsuga forest. Above Van Duzen River, 1 mile below Dinsmore s 762 Comment
  HSC32127  Montia fontana D. E. Anderson, S. Dowty, Thomas W. Nelson 1972-6-14 5587 Humboldt Mt. Lassic and two smaller peaks to immediate E 1768 Comment
  UC198599  Montia howellii Joseph P. Tracy 1916-5-7 4686 Humboldt Eureka; Northern Coast Region, Eureka 0 Comment
  HSC69868  Montia linearis Thomas W. Nelson 1978-5-28 4097 Humboldt McKeown Ranch, N of Dinsmore 762 Comment
  CAS-BOT-BC445158  Montia parvifolia W. R. Dudley 1899-1-1 s.n. Humboldt Trinidad Head Comment
  HSC102504  Montia parvifolia M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-28 1489 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1106 Comment
  HSC55193  Montia parvifolia G. L. Clifton, Terry Griswold 1979-8-2 12267 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  HSC63080  Morella californica David Wheeler 1979-4-30 89 Humboldt 910 Gwinn St., McKinleyville Comment
  HSC89420  Morella californica P. A. Daly 1986-1-4 37 Humboldt Trinidad Head 61 Comment
  HSC10395  Muhlenbergia filiformis H. E. Parks, J. P. Tracy 1934-6-27 11083 Humboldt Grouse Mtn. Comment
  HSC44168  Muhlenbergia filiformis Thomas W. Nelson, Jane P. Nelson 1977-9-3 3738 Humboldt Head of Bear Creek 1585 Comment
  SEINET200835 Image available Muhlenbergia filiformis Joseph P. Tracy 1919-9-18 5233 Humboldt Trinity Summit 1829 Comment
  UCD119529  Myosotis latifolia James P. Smith; Advanced Plant Taxonomy Class 1973 1973-5-26 6855 Humboldt Scotia Bluffs along the Eel River near Rio Dell. Comment
  UC582609  Myosotis verna Joseph P. Tracy 1937-5-17 15297 Humboldt Trinity R. Valley at Willow Creek; Trinity R. Valley 152 Comment
  HSC78084  Myosurus minimus L. P. Janeway, K. Berg, Rudy Becking 1984-4-11 718 Humboldt N Spit of Humboldt Bay on BLM land 3 Comment
  HSC35523  Myriophyllum aquaticum No Collector Humboldt W of Mckinleyville Comment
  RSA10034  Nassella lepida Joseph P. Tracy 1933-5-20 12247 Humboldt Mattole Valley, near Petrolia 152 Comment
  RSA10044  Nassella pulchra Joseph P. Tracy 1927-5-8 7963 Humboldt Phillipsville 122 Comment
  HSC12786  Nasturtium officinale M. J. Athey 1970-10-28 5 Humboldt Along old road to Trinidad, along E bank, Trinidad Comment
  HSC6874  Nasturtium officinale R. L. Jarvis 1962-4-17 17 Humboldt 0.5 mi. S of Bayside turnoff on Old Arcata Rd. 15 Comment
  UC908388  Navarretia divaricata Joseph P. Tracy 1932-7-11 10395 Humboldt Corral Prairie Trinity Summit 1584 Comment
  UC1222720  Navarretia intertexta Joseph P. Tracy 1950-6-15 18773 Humboldt between Garberville and Harris (on the Robertson Ranch) Comment
  JEPS79938  Navarretia intertexta subsp. intertexta Joseph P. Tracy 1938-7-5 16012 Humboldt open flat by old Strong's District School House (5 mi e of town); Carlotta 45 Comment
  UCSB5208  Navarretia squarrosa Parks, H. 1952-07 Humboldt Trinidad Comment
  HSC43175  Navarretia squarrosa R. Sutherland 1976-8-13 16 .13876 Humboldt Redwood Creek, Whittemore Grove. 87 Comment
  OBI22891  Navarretia squarrosa H. E. Parks, S. T. Parks 24442 ` Humboldt Trinidad, Spruce Groove. 76 Comment
  JEPS70478  Navarretia tagetina W. L. Jepson 1932-7-24 16386 Humboldt above Eel Rock; Mail Ridge 762 Comment
  UC1103584  Navarretia viscidula Joseph P. Tracy 1923-6-18 6287 Humboldt Petrolia Northern Coast Ranges, Mattole Valley 30 Comment
  UC169009  Nemophila heterophylla Mrs. M. H. Manning Mar. 1902 Humboldt Hupa Comment
  UC249522  Nemophila heterophylla Joseph P. Tracy 1922-4-30 5987 Humboldt near Willow Creek (Trinity River Valley); Northern Coast Ranges, Trinity River Valley 152 Comment
  HSC77392  Nemophila menziesii var. atomaria L. P. Janeway 1983-4-16 233 Humboldt Near the old Hwy. 299 on W side of Berry Summit. 823 Comment
  SBBG6129  Nemophila menziesii var. atomaria H. and M. Dearing 1939-4-24 3424 Humboldt near Dyerville Comment
  UC1103811  Nemophila menziesii var. atomaria Joseph P. Tracy 1922-5-29 6065 Humboldt South Yager Creek Valley Northern Coast Ranges, South Yager Creek Valley 762 Comment
  UCR37590  Nemophila menziesii var. atomaria L. P. Janeway 1983-4-16 233 Humboldt Near the old Hwy 299 on W side of Berry Summit 823 Comment
  HSC43113  Nemophila menziesii var. menziesii Maralyn O'Meara 1974-5-14 363 Humboldt Beside Hwy. 299, 14.2 mi. E of Bridgeville Comment
  HSC32882  Nemophila parviflora Thomas W. Nelson, James Nelson 1973-5-28 934 Humboldt McKeown Ranch N of Dinsmore Comment
  UC1245393  Nemophila parviflora Joseph T. Gregory 1933-7-11 364 Humboldt nr Clear Lake (Grouse Mt.); nr Clear Lake, Grouse Mt. 1524 Comment
  UC585996  Nicotiana quadrivalvis Joseph P. Tracy 1930-10-19 9223 Humboldt Alton to Fortuna (Eel River); Eel River 15 Comment
  HSC74643  Noccaea fendleri subsp. glauca M. A. Baker 1980-5-18 1365 Humboldt Near Black Mtn. 792 Comment
  BLMAR149  Notholithocarpus densiflorus Donald Hazlett 1994-6-7 149 Humboldt King range, E-facing slope off horse mountain ridge 609 Comment
  UCD110165  Notholithocarpus densiflorus Joseph P. Tracy 1927-8-28 8361 Humboldt Near Boynton Prairie. 609 Comment
  HSC54589  Notholithocarpus densiflorus var. densiflorus Overton, Butler 1979-7-24 9657 Humboldt Near Friday Camp, close to the town of Willow Creek. 1250 Comment
  UC275320  Nuphar lutea subsp. polysepala Joseph P. Tracy 1923-6-27 6385 Humboldt Trinity River Valley near the South Fork, Lack Pond Lack Pond; Northern Coast Ranges, Trinity River Valley, Lack Pond 182 Comment
  UC1222454  Nuttallanthus texanus J. P. Tracy 1919-4-27 5135 Humboldt opposite Eureka (Ocean Beach at Samoa); Samoa, Ocean Beach Comment
  UCSB15645  Nuttallanthus texanus Breedlove, Dennis 1962-6-7 Humboldt 1.5 miles south of Samoa; on peninsula on western side of Humboldt Bay Comment
  HSC100095  Oemleria cerasiformis J. P. Smith, & J. O. Sawyer 2010-3-22 12712 Humboldt Along Hwy. 36, E of Dinsmore. 780 Comment
  HSC82314  Oemleria cerasiformis Thomas W. Nelson, Linda M. Barker 1977-6-3 3386 Humboldt Floodplain of Mad River at S end of Mad River Bridge. 53 Comment
Read comments
May 7 2013
  UC1198782  Oemleria cerasiformis Joseph P. Tracy 1913-3-30 4030 Humboldt near Eureka (at Stephen Hill place); Northern Coast Region 0 Comment
  HSC39450  Oenanthe sarmentosa Linda M. Barker 1976-7-5 1632 Humboldt 3 mi. W of Arcata. Comment
  HSC23225  Oenanthe sarmentosa Thomas O. Erickson 1971-10-28 1 Humboldt Luffenholtz Beach off Hwy. 101 N of Moonstone Comment
  UC673043  Oenanthe sarmentosa Joseph P. Tracy 1940-8-25 16713 Humboldt near High Prairie Bald Mt. 1005 Comment
  CHSC70155  Oenothera glazioviana David K. Imper 1983-7-1 Humboldt Eureka. Weedlot on 6th Street. 15 Comment
  HSC82412  Oreostemma alpigenum var. andersonii Thomas W. Nelson 1979-7-11 5018 Humboldt N Trinity Mtn. and ridge to E. 1829 Comment
  HSC16681  Orobanche californica subsp. californica H. E. Parks, S. T. Parks 1930-9-14 782 Humboldt Big Lagoon Comment
  UC1197444  Orobanche uniflora subsp. occidentalis Joseph P. Tracy 1947-7-5 17821 Humboldt Trinity Summit. Near Box Camp. Comment
  HSC54021  Orthilia secunda Griswold, Butler 1979-7-12 7180 Humboldt Near Groves Prairie, close to the town of Willow Creek. 1256 Comment
  HSC54859  Orthilia secunda G. L. Clifton, Griswold 1979-7-25 10757 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1814 Comment
  HSC54894  Orthilia secunda G. L. Clifton, Griswold 1979-7-25 10935 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1784 Comment
  HSC55161  Orthilia secunda Gilbert Muth 1979-8-1 12130 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1677 Comment
  POM299483  Orthocarpus pusillus C. C. Harris, S. K. Harris 1942-6-18 1283 Humboldt 1 mile north and 3 miles west of Chalk Mountain. 665 Comment
  HSC55615  Osmorhiza occidentalis Overton, Butler 1979-7-23 9508 Humboldt Near Titlow Hill, close to the town of Willow Creek. 1280 Comment
  UC1212178  Oxalis oregana H. E. and S. T. Parks 1945-4-1 Humboldt Spruce Cove Trinidad 0 Comment
  RSA189638  Oxalis oregana Noel Holmgren, James L. Reveal 1966-6-8 2658 Humboldt Coast Range, east of Arcata, 1.5 miles south of Korbel. 274 Comment
  HSC102561  Ozomelis trifida M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-29 1548 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1579 Comment
  UC526840  Panicum acuminatum var. acuminatum Joseph P. Tracy 1931-5-17 9427 Humboldt at Willow Creek Willow Creek; Northern Coast Ranges, Trinity River Valley 152 Comment
  CAS-BOT-BC253709  Panicum capillare Henry M. Pollard 1946-8-22 s.n. Humboldt Ullathorne Riffle, Klamath River, Orleans region Comment
  UC1103770  Panicum miliaceum subsp. miliaceum J. C. Tario Jr. 1931-8-20 Humboldt Eureka 30 Comment
  HSC13259  Parapholis incurva D. E. Anderson 1965-6-10 3786 Humboldt E part of Eureka. Comment
  CAS-BOT-BC253924  Parapholis incurva S. K. Harris; J. P. Tracy 1936-6-6 3218 Humboldt Near railroad station, Eureka Comment
  JEPS17373  Parentucellia viscosa Rimo Bacigalupi with G. Thomas Robbins and C. L. Custer 1954-8-10 4762 Humboldt 0.4 mi s (of boundary marker) Dry Lagoon Beach (along U.S. Highway 101) Comment
  HSC90750  Parentucellia viscosa Jean Hanson 1980-6-22 95 Humboldt Indian (Gunther) Island, Humboldt Bay, City of Eureka, W end of island Comment
  HSC20931  Pedicularis densiflora N. J. Cole 1965-3-19 3 Humboldt 5 mi. S of Weitchpec along Hwy. 96 Comment
  HSC28196  Pedicularis densiflora Thomas W. Nelson 1971-4-4 368 Humboldt Bridgeville Comment
  UC582558  Pedicularis densiflora Joseph P. Tracy 1927-5-15 8060 Humboldt near summit on road w from Hoopa to Bair's; Northern Coast Ranges, Hoopa Mountain 1066 Comment
  HSC56104  Pedicularis racemosa G. L. Clifton 1979-7-31 11836 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  CAS-BOT-BC67768  Pellaea andromedifolia Doris K. Kildale 1928-12-30 6768 Humboldt Phillipsville Comment
  CAS-BOT-BC67623  Pellaea mucronata Donald Branscomb 1959-4-1 s.n. Humboldt Bear Butte, near Garberville. 853 Comment
  JEPS7213  Penstemon anguineus Lincoln Constance 1934-6-19 905 Humboldt Grasshopper Pk near summit South Fork Eel River, Bull Creek Region 914 Comment
  UC1011933  Penstemon anguineus F. W. Pennell and J. P. Tracy 1940-7-7 26092 Humboldt w Salyer (Grouse Mountain); w of Salyer, Grouse Mountain 1371 Comment
  UC1326253  Penstemon anguineus Milo S. Baker 1947-8-10 11911 Humboldt near end of Forest Rd from Hoopa toward Trinity Summit; rd from Hoopa toward Trinity Summit 1371 Comment
  HSC75162  Penstemon azureus J. O. Sawyer, R. J. Cole 1977-7-3 3009 Humboldt Environs of Mud Spring, Big Hill Rd. (FS Rd. 8N01) 1524 Comment
  JEPS11368  Penstemon heterophyllus var. purdyi Lincoln Constance 1934-5-26 676 Humboldt s end of Dyerville Bridge Bull Creek Region, South Fork Eel River, Dyerville Bridge (South Fork Eel River, Bull Creek Region) 45 Comment
  HSC74399  Penstemon laetus subsp. sagittatus Gail Newton 1980-6-28 731 Humboldt Near Mad River Butte. 1536 Comment
  HSC76225  Penstemon laetus subsp. sagittatus Walter Overton, Marvin Butler 1979-7-24 9745 Humboldt Near Black Rock, close to the town of Willow Creek 1554 Comment
  JEPS11630  Penstemon laetus var. sagittatus Joseph P. Tracy 1937-7-2 15395 A Humboldt on ridge 2 mi e Groves Prairie; Trinity Summit 1524 Comment
  HSC56080  Penstemon newberryi subsp. berryi G. L. Clifton, Terry Griswold 1979-7-31 11768 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa. 1845 Comment
  UC1543128  Penstemon newberryi var. berryi W. K. Parks Jul 1933 1433 Humboldt South Fork Mountain Comment
  HSC56044  Penstemon procerus var. brachyanthus G. L. Clifton, Terry Griswold 1979-7-31 11619 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1719 Comment
  HSC35942  Penstemon rattanii Thomas W. Nelson, Jane Nelson, James Nelson 1975-7-15 2034 Humboldt French Camp, Bald Hills. Comment
  UC1222945  Pentachaeta alsinoides Joseph P. Tracy 1946-5-16 17346 Humboldt bench on w side of river 1 mi s Garberville; Eel River Comment
  UCSB51227  Pentagramma triangularis subsp. triangularis Almanza, Ed 1976-7-16 Humboldt 6.2 miles west of Berry Summit, Highway 299 762 Comment
  UC1197127  Perideridia gairdneri subsp. borealis Joseph P. Tracy 1936-8-17 15152 Humboldt 2 mi s Fields Landing; Northern Coast Region, Region about Humboldt Bay 9 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
  HSC35616  Perideridia oregana Thomas W. Nelson, B. Reinhardt 1975-7-30 2113 Humboldt E of Pilot Rock Comment
  UCD99742  Persicaria maculosa James Payne Smith Jr.; Advanced Plant Taxonomy Class 1971-10-6 4950 Humboldt End of Murray Road in McKinleyville. Comment
  SDSU391  Petasites frigidus var. palmatus D. F. Howe 1963-5-26 3553 Humboldt 2.8 miles east of Orick on Bald Hill road.n 427 Comment
  POM41563  Petasites palmatus Marcus E. Jones 1924-4-26 s.n. Humboldt Scotia Comment
  UC1239734  Phacelia ciliata var. ciliata J. P. Tracy 1899-4 163 Humboldt Immediate vicinity of Eureka 0 Comment
  RSA170294  Phacelia heterophylla subsp. virgata Lincoln Constance 1934-5-29 731 Humboldt South Fork Eel River, Upper Look Prairie. 366 Comment
  HSC57205  Phacelia mutabilis Griswold, Butler 1979-7-12 7160 Humboldt Near Groves Prairie, close to the town of Willow Creek. 1256 Comment
  HSC58319  Phacelia mutabilis Overton, Butler 1979-8-2 12609 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  HSC98826  Phacelia mutabilis Cara Witte 2008-7-16 915 Humboldt Board Camp Mountain. Forest Service Road 4N38. 1/2 mile south of intersection with National Forest 1. 1409 Comment
  UC562566  Phacelia mutabilis Joseph P. Tracy 1932-7-12 10432 Humboldt Corral Prairie Trinity Summit 1584 Comment
  BLMAR532  Phacelia nemoralis subsp. nemoralis Jennifer Wheeler 2009-6-23 532 Humboldt King range, On Paradise Ridge road Comment
  HSC10560  Phalaris californica J. P. Tracy 1925-6-7 7085 Humboldt Lord-Ellis Rd on Bald Mtn. Comment
  CAS-BOT-BC76564  Philadelphus lewisii Doris K. Kildale 1928-6-9 5057 Humboldt Chalk Mountain Comment
  UC154110  Philadelphus lewisii Joseph P. Tracy 1908-6 2886 Humboldt opposite Buck Mountain; Northern Coast Ranges, valley of Van Duzen River 762 Comment
  UC666825  Philadelphus lewisii Joseph P. Tracy 1937-6-20 15355 Humboldt ten mi up stream from mouth; Bear River 152 Comment
  CAS-BOT-BC253587  Phleum alpinum Joseph P. Tracy 1932-7-10 10388 Humboldt At Corral Prairie, Trinity Summit, Klamath Mountains 1524 Comment
  UC526750  Phleum alpinum Joseph P. Tracy 1932-7-10 10388 Humboldt Corral Prairie Trinity Summit; Klamath Mountains, , Corral Prairie 1524 Comment
  UC962098  Phleum alpinum Joseph P. Tracy 1934-7-2 13294 Humboldt Trinidad 3 Comment
  JEPS79942  Phlox adsurgens Joseph P. Tracy 1932-7-13 10488 Humboldt near Corral Prairie; Trinity Summit 1584 Comment
  HSC49981  Phlox adsurgens M. A. Baker 1979-6-7 779 Humboldt N bank of road to Snow Mtn. 610 Comment
  UC905634  Phlox adsurgens David D. Keck 1948-7-2 6003 Humboldt 0.25 mi w boundary of Six Rivers National Forest (8.6 mi w of Willow Creek, e of Berry's summit, e side of Rocky Ridge); Rocky Ridge 762 Comment
  UC1198562  Phlox gracilis Joseph P. Tracy 1906-5-6 2447 Humboldt near Hydesville (hillside of Wolverton Gulch); Northern Coast Region, Wolverton Gulch 60 Comment
  UC672849  Phoradendron juniperinum Joseph P. Tracy 1932-7-16 16048 Humboldt Trinity Summit, Corral Prairie 1584 Comment
  HSC62687  Phoradendron serotinum subsp. macrophyllum Michelle Stevens 1979-5-12 146 Humboldt Just before Camp Bauer in Korbel along the N Fork of the Mad River Comment
  CAS-BOT-BC140586  Physocarpus capitatus Doris K. Kildale 1926-5-15 3158 Humboldt Petrolia Bridge, Mattole River Valley Comment
  NY951519  Picea sitchensis D. H. Goldman 2004-10-30 2901 Humboldt West side of Eel River Drive, about 0.4 mile S of the intersection with Hookton Road and the entrance ramp to Rt. 101 21 Comment
  RSA23  Picea sitchensis E. R. Johnson 1928-8-26 1146 Humboldt Arcata. Comment
  SBBG34261  Picea sitchensis J. W. Howe 1938-3-31 Humboldt near Arcata Comment
  UC1134170  Picea sitchensis H. S. Yates 1936-6-16 5659 Humboldt 1 mi sw Samoa; Eureka Quad. 6 Comment
  UC1219787  Picea sitchensis E. Fritz 1935-8-16 Humboldt Comment
  UC137  Picea sitchensis J. P. Tracy 1901-4-17 Humboldt Samoa; Humboldt Bay Comment
  SD42286  Pinus attenuata Carl B. Wolf 1937-8-13 Humboldt North Coast Range, 8 miles east of Hoop Valley on new road towards Trinity Summit 1220 Comment
  CAS-BOT-BC73290  Pinus contorta Ira L. Wiggins 1930-6-25 4620 Humboldt Sand dunes 2 miles north of Samoa. Comment
  UC573158  Pinus contorta subsp. contorta H. S. Yates 1936-6-16 5660 Humboldt 1 mi sw Samoa 6 Comment
  RSA384301  Pinus contorta var. contorta E. A. Purer 1932-7-27 4132 Humboldt Samoa, near Arcata. Comment
  HSC44319  Pinus monticola Brad Klipfel 1975-6-17 670 Humboldt Horse Mtn. Comment
  UC55660  Pinus ponderosa P. E. Goddard 1901-7-10 51 Humboldt ona Hupa (<currently spelled Hoopa as a place name>) Comment
  CAS-BOT-BC79028  Pinus ponderosa Ranger K. Fox 1939-8-22 13876 Humboldt Along the Everett Memorial Highway 1981 Comment
  UC4590  Piperia candida Harley P. Chandler Jun 1901 1385 Humboldt Hupa Indian Reservation North Coast Ranges 304 Comment
  UC1196411  Piperia unalascensis Joseph P. Tracy 1913-6-26 4346 Humboldt opposite Buck Mountain ( Dinesmore's Ranch); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  CDA42401  Pittosporum tenuifolium R. Robison 2014-5-5 s.n. Humboldt Trinidad State Beach, in area west of town, southwest of State Park Road parking lot, along path toward Ewing Street. 0 Comment
  UC1197758  Pityopus californicus Joseph P. Tracy 1925-7-5 7184 Humboldt High Prairie on Bald Mountain North Coast Ranges 1066 Comment
  CAS-BOT-BC458134  Pityopus californicus Doris K. Kildale 1926-6-6 2110 Humboldt Trail to Gold Bluffs Comment
  UC1186480  Plagiobothrys bracteatus John H. Weiler and A. P. Nelson 1960-6-28 60250 Humboldt vernal pool on floodplain of river 3.6 mi w Humboldt-Trinity County line; Van Duzen River Comment
  UC177186  Plagiobothrys nothofulvus Joseph P. Tracy 1913-6-13 4115 Humboldt opposite Buck Mountain (valley Van Duzen River, Dinsmore's Ranch); Northern Coast Ranges, Valley Van Duzen River, Dinsmore's Ra 762 Comment
  SBBG28861  Plagiobothrys reticulatus H. E. Parks -Jul-1937 24042 Humboldt Spruce Cove, Trinidad 64 Comment
  UC1239569  Plagiobothrys reticulatus Joseph P. Tracy 1909-5-23 2972 Humboldt Eureka Northern Coast Region, Eureka 0 Comment
  UC526822  Plagiobothrys reticulatus Joseph P. Tracy 1928-6-24 8473 Humboldt head Yager Creek (East Ranch); North Coast Ranges, head Yager Creek, East Ranch 762 Comment
  JEPS68130  Plagiobothrys tenellus Joseph P. Tracy 1921-4-24 5649 Humboldt Phillipsville, facing South Fork of Eel River Northern Coast Ranges 121 Comment
  SEINET8665540  Plantago australis subsp. hirtella J. P. Tracy 1906-6-17 2493 Humboldt Immediate vicinity of Eureka Comment
  HSC33750  Plantago erecta A. Montalvo 1975-5-24 282 Humboldt Samoa Dunes off Samoa Blvd., across from the boat landing Comment
  UC1196143  Plantago erecta Joseph P. Tracy 1919-4-27 5133 Humboldt opposite Eureka (Ocean Beach at Samoa); Humboldt Bay, Samoa, Ocean Beach Comment
  UCD124428  Plantago erecta D. E. Breedlove 1962-6-7 3046 Humboldt 1.5 miles south of Samoa on peninsula on west side of Humboldt Bay. 106 Comment
  SEINET10782201  Plantago major J. Richard Abbott, B. S. Carlsward 1999-7-7 Abbott 13016 Humboldt On U.S. 101, near Holmes, 1.76 km south of Stafford Road. Comment
  HSC37567  Plantago maritima J. D. Ackerman 1975-6-10 464 Humboldt 1 mi. N of Samoa Bridge turnoff from Samoa Blvd., S of Manila Comment
  HSC71216  Plantago maritima Thomas W. Nelson, Doris K. Niles 1979-5-19 4692 Humboldt Tidal marsh at mouth of Eel River, Crab Park, N of County Park. Comment
  SJSU11079  Plantago maritima H. T. Harvey 1977-7-6 608 Humboldt S Spit, Humboldt Bay Comment
  UCD124372  Plantago maritima Malcolm A. Nobs; S. Galen Smith 1949-8-3 1205 Humboldt Salt marshes bordering Humboldt Bay, CA. 2 miles N of Eureka. Comment
  HSC83040  Plantago maritima A. L. Eicher 1986-5-10 Humboldt .3 mi. S of the junction of Samoa Blvd. and Vance Ave. 1 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
  UC429188  Platanthera Franklin P. Nutting Humboldt Bridge Creek, n California Bridge Creek Comment
  HSC54704  Platanthera dilatata Overton, Butler 1979-7-26 10030 Humboldt Near White Rock Spring, close to the town of Willow Creek 1554 Comment
  HSC74221  Platanthera dilatata var. leucostachys M. A. Baker 1980-7-22 3121 Humboldt Near Grogan Hole. 1676 Comment
  UC666989  Platanthera leucostachys Joseph P. Tracy 1933-7-25 12842 Humboldt Grouse Mountain 1524 Comment
  HSC16798  Platystemon californicus J. R. Woodside 1963-4-3 34 Humboldt 1.25 mi. N of Fairhaven. Comment
  UC1196297  Platystemon californicus H. E. Parks and Joseph P. Tracy 1930-5-25 8718 Humboldt Larrabee Valley; Northern Coast Ranges, Larrabee Valley 670 Comment
  UC416757  Plectritis congesta Mrs. M. H. Manning Apr 1902 Humboldt near Hupa Comment
  SJSU2519  Pleuricospora fimbriolata H. L. Buckalew 1962-6-28 Humboldt Prairie Cr, Redwoods State Park Comment
  UC180505  Pleuropogon refractus Joseph P. Tracy 1914-7-4 4529 Humboldt Bald Mountain, High Prairie Bald Mountain; Northern Coast Ranges, Bald Mountain 1066 Comment
  RSA10141  Poa bolanderi Joseph P. Tracy 1932-7-12 10464 Humboldt Klamath Mountains, Trinity Summit, Head of Brett Hole 1829 Comment
  UC1145120  Poa bolanderi Joseph P. Tracy 1937-7-29 15581 Humboldt near McKay camp South Fork Mt 1676 Comment
  RSA21035  Poa macrantha C. B. Wolf 1937-6-18 8904 Humboldt Centerville Beach 3 Comment
  HSC10770  Poa pratensis R. D. Zortman 1963-5-5 32 Humboldt 5 mi. NE of Arcata, S of the Mad River, off Warren Creek Rd. 91 Comment
  HSC39722  Poa pratensis D. E. Anderson, J. P. Smith 1971-6-28 - 1254 Humboldt 2.5 mi. S of Blue Lake along the Mad River Comment
  HSC40338  Poa pratensis Linda M. Barker 1976-6-1 1567 Humboldt Lanphere-Christensen Dunes, 3 mi. W of Arcata. Comment
  HSC70247  Poa pratensis M. A. Baker 1980-6-8 1916 Humboldt Near Buck Flat. 1554 Comment
  HSC10789  Poa secunda subsp. secunda J. P. Tracy 1927-6-12 8143 Humboldt Horse Mtn. 1524 Comment
  UC1152045  Poa secunda subsp. secunda Joseph P. Tracy 1951-6-26 19543 Humboldt 2 mi w Snow Camp (at Beck's Place, Hydesville) 1219 Comment
  UC525668  Poa secunda subsp. secunda Joseph P. Tracy 1926-5-9 7469 Humboldt valley s of Yager Creek 762 Comment
  HSC41373  Poa trivialis J. O. Sawyer 1970-6-24 2277 Humboldt W of Mill Creek Lakes. 1677 Comment
  CAS-BOT-BC244298  Podagrostis humilis Joseph P. Tracy 1930-7-16 8989 Humboldt South Fork Mountain, at McKay Camp 1676 Comment
  UC604642  Pogogyne zizyphoroides Joseph P. Tracy 1938-7-5 16005 Humboldt Carlotta, open flat by old Strong's District School House, 5 miles east of town 45 Comment
  SBBG93447  Polygala californica H. P. Chandler -Jun-1901 1328 Humboldt Hupa [Hoopa] Indian Reservation 152 Comment
  HSC17223  Polygala cornuta J. P. Tracy, H. E. Parks Humboldt Hors Linto Rd., Trinity River 610 Comment
  CAS-BOT-BC110515  Polygonum Malcom A. Nobs; S. Galen Smith 1949-8-9 1232 Humboldt On southern side of the town of Blue Lake. Comment
  UC1192343  Polygonum aviculare subsp. aviculare Malcolm A. Nobs and S. Galen Smith 1949-8-11 1344 Humboldt Stone Lagoon; marsh on e shore Comment
  CAS-BOT-BC414464  Polygonum douglasii Joseph P. Tracy 1930-6-21 8779 Humboldt Larrabee Valley 731 Comment
  UC672961  Polygonum douglasii subsp. douglasii Joseph P. Tracy 1932-7-11 10399 Humboldt Corral Prairie Trinity Summit 1584 Comment
  UC1192316  Polygonum hydropiper Malcolm A. Nobs and S. Galen Smith 1949-8-11 1336 Humboldt Stone Lagoon; marsh on e shore Comment
  CAS-BOT-BC418616  Polygonum majus Henry M. Pollard 1943-8-1 s.n. Humboldt Orleans Comment
  HSC57966  Polygonum minimum G. L. Clifton, Griswold 1979-7-31 11683 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1805 Comment
  CAS-BOT-BC109179  Polygonum paronychia Joseph P. Tracy 1930-7-21 8890 Humboldt Cape Mendocino. South of point of the cape. 30 Comment
  UC1198082  Polygonum persicaria Joseph P. Tracy 1912-10-20 3990 Humboldt near Loleta Pond; Northern Coast Ranges, Eel R. Valley 15 Comment
  CDA2926  Polygonum polystachyum T. C. Fuller 1961-9-27 7040 Humboldt Slope of bluff north above mouth of Redwood Creek, 1.5 miles west of Orick. 0 Comment
  UC1225798  Polygonum sachalinense Joseph P. Tracy 1946-8-25 17634 Humboldt roadside 1/2 mi s mouth of Elk River 6 Comment
  UC672940  Polygonum sachalinense W. E. Peacock 1939-8-18 Humboldt near Fields Landing; Buhne Flat 9 Comment
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Jul 14 2016
  HSC98687  Polygonum sawatchense subsp. oblivium Cara Witte 2007-7-5 420 Humboldt National Forest 1. 1.5 miles southeast of Forest Service Road 5N09. 1578 Comment
  POM210237  Polygonum spergulariiforme H. E. Parks, Joseph P. Tracy 1930-9-15 767 Humboldt Bald Hills Comment
  UC249779  Polypodium Joseph P. Tracy 1924-3-9 6608 Humboldt Kneeland Prairie; Northern Coast Ranges 762 Comment
  POM118346  Polypodium californicum Marcus E. Jones 1924-4-26 s.n. Humboldt Eureka. Comment
  RSA46700  Polypodium californicum Doris K. Kildale 1928-2-19 4262 Humboldt Little River near Trindad Comment
  CHSC53230  Polypodium glycyrrhiza L. P. Janeway 1984-12-5 1194 Humboldt On the North Spit of Humboldt Bay; on the west side of Samoa Rd near the boat ramp. 4 Comment
  SEINET182509 Image available Polypodium glycyrrhiza H. E. Parks 1924-6-1 2837 Humboldt Lawrence Creek Comment
  UC249780  Polypodium glycyrrhiza Joseph P. Tracy 1924-3-9 6614 Humboldt Kneeland Prairie; Northern Coast Ranges 762 Comment
  HSC28927  Polypodium glycyrrhiza Diane Johnson 1972-4-12 Humboldt Butler Valley near Big Bend Rd. Comment
  HSC67085  Polypodium glycyrrhiza Richard Spjut 1980-5-20 6199 Humboldt 2 mi. W of Willow Creek along Hwy. 299 below Boise Campground near stream 305 Comment
  UC197920  Polypodium glycyrrhiza Joseph P. Tracy 1914-6-7 4490 Humboldt N. Fork Eel River; Northern Coast Region 0 Comment
  UC667949  Polypodium glycyrrhiza Joseph P. Tracy 1936-3-8 14775 Humboldt along S Fork Eel River Miranda 121 Comment
  UC71483  Polypodium scouleri W. C. Blasdale 1896-6-2 Humboldt w Eureka Comment
  HSC1125  Polypodium scouleri R. J. Vernimen 1963-2-17 10 Humboldt Clam Beach Lagoons Comment
  UC526773  Polypogon interruptus Joseph P. Tracy 1930-6-29 8819 Humboldt lower foothills nw slope Buck Mountain; Northern Coast Ranges, nw slope Buck Mountain 762 Comment
  HSC10833  Polypogon maritimus J. P. Tracy 1933-7-20 12811 Humboldt Along Mad River, near Blue Lake. 15 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
  UC1132904  Polypogon monspeliensis H. S. Yates 1936-6-16 5679 Humboldt 1 mi ne Samoa; Eureka Quad. Comment
  UC1145085  Polypogon monspeliensis Joseph P. Tracy 1942-6-15 17144 Humboldt on South Fork of Eel River opposite Redway (Redwood Creek); South Fork of Eel River, Redwood Creek 91 Comment
  UC39746  Polypogon monspeliensis Harley P. Chandler June 1901 1431 Humboldt sandy banks Klamath River; North Coast Ranges, Klamath River 335 Comment
  HSC55089  Polystichum munitum G. L. Clifton, Griswold 1979-7-31 11764 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa. 1845 Comment
  RSA247492  Polystichum munitum Gary D. Wallace 1966-9-12 703 Humboldt Along Hwy. 299 E of Arcata near Willow Creek; Comment
  RSA430497  Polystichum munitum Lyman Benson 1929-7-19 1660 Humboldt Mouth of Matole River. Comment
  HSC13046  Polystichum munitum Jana Kattenhorn 1970-10-24 123 Humboldt HSU campus S of Building 52 Comment
  HSC79150  Polystichum munitum C. J. Thomas 1984-9-25 118 Humboldt In Redwood forest immediately behind HSU fieldhouse 79 Comment
  SEINET3874030 Image available Polystichum munitum var. imbricans Thomas Nelson, Jane P. Nelson; James Nelson 1975-6-14 1903 Humboldt Beside branch off Rd. 2S08 to Pine Mountain.; 0 Comment
  SBBG21983  Populus balsamifera subsp. trichocarpa R. F. Thorne 1957-9-2 18990 Humboldt branch of Eel River at Burlington State Park, just S of Weott Comment
  UC1196664  Populus trichocarpa Joseph P. Tracy 1922-10-8 6124 Humboldt Mad River at Blue Lake; Northern Coast Ranges, Mad River at Blue Lake 30 Comment
  HSC17777  Potamogeton foliosus J. P. Tracy 1934-8-14 13588 Humboldt S Fork of Eel River, midway between Miranda and Garberville 91 Comment
  HSC62826  Potamogeton nodosus J. M. DiTomaso 1979-4-22 907 Humboldt Crannell Rd. exit between Westhaven and McKinleyville Comment
  CAS-BOT-BC454066  Potamogeton pusillus subsp. pusillus S. K. Harris 1938-9-12 s.n. Humboldt Backwater of Eel River, near Fernbridge Comment
  HSC36301  Potamogeton richardsonii Camille Cornish 1973-10-10 5 Humboldt Edge of Freshwater Lagoon Comment
  CHSC68558  Potentilla anserina subsp. pacifica Vernon H. Oswald 1997-4-29 8349 Humboldt Shorebird Loop Trail between the trailhead and Lond Pond, Humboldt Bay NWR. Along the trail. 0 Comment
  HSC98450  Potentilla gracilis John Rehling 1974-7-12 11 .5 Humboldt Near the Bald Hills Rd., 23.5 mi. from Hwy. 101 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
  HSC54230  Prosartes hookeri Griswold, Butler 1979-7-12 7297 Humboldt Near Lone Pine Ridge, close to the town of Willow Creek. 1478 Comment
  HSC73575  Prosartes hookeri Gail Newton 1980-7-14 1513 Humboldt Near Deadman Ridge 1097 Comment
  SBBG979  Prosartes hookeri H. and M. Dearing 1933-5-16 253 Humboldt Weott Comment
  SBBG980  Prosartes hookeri H. and M. Dearing 1933-5-16 254 Humboldt Weott Comment
  HSC95735  Prosartes smithii Steven Lee 2004-4-13 20 Humboldt Arcata Community Forest, hillside along Jolly Giant Creek Comment
  CDA5736  Prunella vulgaris T. C. Fuller 1958-6-17 596 -58 Humboldt Wildcat Ridge near Bunker Hill. 0 Comment
  RSA424589A  Prunella vulgaris var. lanceolata Bonnie C. Templeton 1931-10-15 s.n. Humboldt Eureka Comment
  UC1225839  Prunella vulgaris var. vulgaris Joseph P. Tracy 1942-10-18 17404 Humboldt Jacoby Creek near the quarry Jacoby Creek 152 Comment
  UC902151  Prunus emarginata Joseph P. Tracy 1944-5-20 17473 Humboldt Eureka, on 2nd St. between K and L Sts Eureka 9 Comment
  SD39794  Pseudognaphalium stramineum Edith A. Purer 1932-7-27 4128 Humboldt Samoa Comment
  UC204167  Pseudognaphalium stramineum Joseph P. Tracy 1918-7-5 5029 Humboldt White Thorn Valley Northern Coast Ranges, White Thorn Valley (in open field) 304 Comment
  UC180193  Pseudognaphalium thermale Joseph P. Tracy 1914-9-6 4622 Humboldt between High Prairie and Snow Camp; Northern Coast Ranges, Bald Mountain 1066 Comment
  UC1223108  Pseudognaphalium thermale Joseph P. Tracy 1942-8-30 17303 Humboldt at Willow Creek Trinity River Valley, Willow Creek 152 Comment
  UC1222911  Psilocarphus oregonus Joseph P. Tracy 1949-8-11 18479 Humboldt 2 to 6 mi s Grouse Mt. (e of headwaters of Redwood Creek); Kinsey Ridge 1402 Comment
  UC1223051  Psilocarphus oregonus Joseph P. Tracy 1947-6-25 17720 Humboldt opposite Buck Mountain (Dinsmore's); Van Duzen River 762 Comment
  HSC18481  Pteridium aquilinum var. pubescens Jana Kattenhorn 1970-10-24 108 Humboldt H.S.C. Campus, Arcata Comment
  SD42991  Pteridium aquilinum var. pubescens Edith A. Purer 1932-7-30 Humboldt south of Orick 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
  UC153970  Pyrola asarifolia J. P. Tracy 1901-6-30 1191 Humboldt Immediate Vicinity of Eureka 0 Comment
  CAS-BOT-BC462869  Pyrola asarifolia Volney Rattan 1878-1-1 s.n. Humboldt Unspecified Comment
  HSC45423  Pyrola dentata Thomas W. Nelson, Jane Nelson 1977-7-4 3584 Humboldt W side of road N of Alder Springs, head of N Fork of Conley Creek 1494 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
  NY42917  Pyrus malus J. B. Walker 1995-4-26 1386 Humboldt Six Rivers National Forest, Hwy 36, 2km W of Cobbs 800 Comment
  JEPS37485  Quercus chrysolepis W. L. Jepson 1902-6 1886 Humboldt Ft. Seward Ranch Ridge 1219 Comment
  JEPS38040  Quercus chrysolepis Lincoln Constance 1934-6-15 885 Humboldt Summit of Grasshopper Peak South Fork Eel River, Bull Creek Region 975 Comment
  UC1196532  Quercus chrysolepis Joseph P. Tracy 1916-9-5 4775 Humboldt 4 mi above Mouth of South Fork of Eel River; Northern Coast Ranges, South Fork of Eel River 60 Comment
  UC535725  Quercus chrysolepis Eleanor Armstrong 1934-8-22 1183 Humboldt Richardson Grove 121 Comment
  UCD45382  Quercus chrysolepis Lincoln Constance 1934-6-15 885 Humboldt Summit of Grasshopper Peak; el. C. 3200 ft. Bull Creek Region. South Fork Eel River, Humboldt County, California. 1158 Comment
  HSC43854  Quercus garryana Maralyn O'Meara 1974-7-17 550 Humboldt Kneeland Comment
  UC1193252  Quercus garryana P. Zinke 1950-8-3 144 Humboldt 914 Comment
  UC1196523  Quercus garryana Joseph P. Tracy 1920-10-9 5402 Humboldt Bald Mountain, at Hungry Hill Northern Coast Ranges 762 Comment
  UC535734  Quercus garryana Eleanor Armstrong 1934-6-15 1132 Humboldt Richardson Grove 121 Comment
  HSC98850  Quercus garryana var. garryana Cara Witte 2008-9-13 1037 Humboldt Forest Service Road 4N06. 1/4 mile east of intersection with National Forest 1. Cow Creek Ridge. 1283 Comment
  UC1196360  Quercus kelloggii Joseph P. Tracy 1923-11-11 6592 1/2 Humboldt near The South Fork; Northern Coast Ranges, Trinity River Valley 182 Comment
  HSC102068  Quercus vacciniifolia M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 970 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  SFV17761  Quercus vacciniifolia J. M. Tucker 1948-9-3 1851 Humboldt Horse Mountain, at junction of roads to Grouse Mountain and to Horse Mountain Mine. 1463 Comment
  UC2016503  Quercus vacciniifolia A. R. Kruckeberg 1965-9-11 5867 Humboldt On broad flat summit just s. of Horse Mtn., ca. 7 mi. s. of Hiway 299. Comment
  HSC81826  Ranunculus alismifolius var. hartwegii Thomas W. Nelson 1979-7-11 5009 Humboldt N Trinity Mtn. and ridge to E. 1829 Comment
  HSC74708  Ranunculus aquatilis var. aquatilis Gail Newton 1981-8-6 2400 Humboldt Near Humbug Creek 1256 Comment
  UC1196236  Ranunculus californicus Joseph P. Tracy 1912-5-5 3578 Humboldt Eureka Northern Coast Region 0 Comment
  HSC18136  Ranunculus californicus var. californicus J. R. Kahl 1962-5-11 30 Humboldt 2 mi. S of Trinidad along Hyw. 101 Comment
  HSC18152  Ranunculus muricatus C. F. Hudson 1964-4-28 64 Humboldt 0.75 mi. S of the mouth of Mad River 6 Comment
  HSC82522  Ranunculus occidentalis Thomas W. Nelson 1977-6-15 3441 Humboldt Along old road to Horse Mountain ski area. 1372 Comment
  UC1196217  Ranunculus occidentalis Joseph P. Tracy 1899-3-15 4 1/2 Humboldt Eureka; in garden Comment
  UC162861  Ranunculus occidentalis Joseph P. Tracy 1903-5-24 1908 Humboldt Alder Point Northern Coast Ranges, Eel River 152 Comment
  HSC99092  Ranunculus occidentalis var. occidentalis Cara Witte 2008-7-2 824 Humboldt Board Camp Mountain. Forest Service Rd. 4N38. Approximately 1 mile south of 4N38 and National Forest 1 intersection. 1416 Comment
  SD90193  Ranunculus orthorhynchus var. orthorhynchus Benjamin C. Stone 1952-6-23 Humboldt Redwood Forest, wet open places on Coast Hwy. 101 20 miles south of Klamath 46 Comment
  UC1196255  Ranunculus orthorhynchus var. orthorhynchus Joseph P. Tracy 1912-7-31 3900 Humboldt Burr Valley Northern Coast Ranges, Buck Mountain (nw slope of mt.) 1066 Comment
  UC162869  Ranunculus orthorhynchus var. orthorhynchus Joseph P. Tracy 1907-6-25 2574 Humboldt Elk River Valley Northern Coast Region, region about Humboldt Bay (along ditch) 0 Comment
  UC503033  Ranunculus orthorhynchus var. orthorhynchus Joseph P. Tracy Jul 16 1930-Jul 19 1930 9007 Humboldt near McKay Camp (along stream below meadow); Northern Coast Ranges, South Fork Mountain 1676 Comment
  RSA20857  Ranunculus orthorhynchus var. platyphyllus Carl B. Wolf 1937-6-18 8897 Humboldt 1/2 miles E of Alton. 21 Comment
  POM126168  Ranunculus parviflorus W. Humboldt 1922-5-21 6053 Humboldt Blue Lake, locally common in depressions by roadside. 30 Comment
  UC1103009  Ranunculus pusillus Joseph P. Tracy 1948-6-13 18035 Humboldt halfway between Bridgeville and Blocksburg (pond on creek); Larrabee Creek 457 Comment
  UC160952  Ranunculus repens Joseph P. Tracy 1910-6-5 3150 Humboldt region about Humboldt Bay Northern Coast Region (marshes) 0 Comment
  HSC99489  Ranunculus repens K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-14 148 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
  CHSC68500  Ranunculus repens var. repens Vernon H. Oswald 1997-4-10 8316 Humboldt Clam Beach between Arcata and Trinidad. On the bank of a creek on the back beach. 30 Comment
  HSC64220  Ranunculus uncinatus J. O. Sawyer, M. A. Ericksen 1979-6-23 3381 Humboldt Slopes below Mill Creek Lakes 1585 Comment
  CDA35698  Rhamnus californica subsp. occidentalis T. R. Gallion 1960-7-7 Humboldt Weitchpec. 0 Comment
  RSA6202  Rhamnus purshiana Doris Kildale Gillespie 1932-9-1 4205 Humboldt City of Eureka, 1 block N of Henderson St on S St cut over Redwoods. 30 Comment
  CAS-BOT-BC58192  Rhododendron columbianum Doris K. Kildale 1927-6-26 3593 Humboldt Patick's Point. Comment
  UCD20673  Rhododendron macrophyllum A. T. Leiser 1980-7-9 s.n. Humboldt Humboldt County, North of Orick, Hwy 101 reroute, May Creek Watershed +- 1000'. Comment
  SBBG5560  Rhododendron occidentale H. and M. Dearing 1933-5-17 1244 Humboldt N of Big Lagoon Comment
  UC1543140  Rhododendron occidentale Frank Gould, Kay Beach 1940-5-5 1041 Humboldt along coast near Trinidad Comment
  HSC47966  Rhododendron occidentale var. paludosum Brad Klipfel 1974-9-17 582 Humboldt Horse Mountain Comment
  HSC76366  Rhododendron occidentale var. paludosum Teresa Prendusi 1981-7-23 346 Humboldt Near Black Mtn. 890 Comment
  CAS-BOT-BC433139  Ribes Doris Kildale Gillespie 1931-6-7 10638 Humboldt South Fork Mt., Blake Lookout 1726 Comment
  HSC103228  Ribes binominatum Jade Paget-Seekins 2010-6-13 19 Humboldt Groves Prairie. From the campsite next to the prairie walk almost to the end of the prairie, turn right, walk down the slope towards the creek. 1254 Comment
  HSC99357  Ribes binominatum K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-6-24 6 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  HSC103240  Ribes bracteosum Jade Paget-Seekins 2010-4-18 10 Humboldt Near the bottom of Bald Hills Road, on the edge of the parking lot for Redwood Creek trailhead. 19 Comment
  UC70552  Ribes bracteosum J. Burtt Davy 1899-6-23 5761 Humboldt near Box Camp; North Coast Ranges, Trinity Summit Comment
  HSC100491  Ribes divaricatum Carl C. Marshall Apr 1886 171 Humboldt Vicinity of Humboldt Bay. Comment
  CAS-BOT-BC108906  Ribes divaricatum var. pubiflorum Joseph P. Tracy 1939-4-27 16226 Humboldt Mouth of Little River. 6 Comment
  HSC56265  Ribes lacustre G. L. Clifton, Griswold 1979-8-2 12423 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  RSA0021102  Ribes lacustre Thomas W. Nelson, Jane P. Nelson 1977-6-19 3490 Humboldt [Mount] Lassic. 1616 Comment
  HSC70746  Ribes lobbii R. York 1980-5-17 537 Humboldt Near Le Perron Peak 1066 Comment
  UC902099  Ribes lobbii Joseph P. Tracy 1948-9-5 18177 Humboldt ne Hawkins Bar; Trinity Summit Range, Happy Camp Mountain 1280 Comment
  HSC102025  Ribes marshallii M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-12 926 Humboldt Along trail from Rustic Camp to Patterson Meadows 1534 Comment
  HSC74205  Ribes marshallii M. A. Baker 1980-7-19 3031 Humboldt Near Bret Hole. 1814 Comment
  CAS-BOT-BC206031  Ribes menziesii L. R. Abrams; R. Bacigalupi 1922-6-25 8289 Humboldt North of Big Lagoon near Orick Comment
  HSC57643  Ribes nevadense G. L. Clifton, Griswold 1979-7-25 10807 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1814 Comment
  RSA0024754  Ribes roezlii Doris Kildale Gillespie 1937-8-12 15258 Humboldt South Fork Mountain. Comment
  RSA0024585  Ribes roezlii var. cruentum Peter H. Raven, Richard Snow 1958-7-20 13630 Humboldt Friday Ridge Road to Grouse Mountain, 10.8 miles southwest of junction with United States Highway 299. Comment
  HSC20335  Ribes sanguineum D. B. Bader 1963-2-17 31 Humboldt Second of the Clam Beach Lagoons W of Hwy. 101 Comment
  HSC20345  Ribes sanguineum Frances Oldridge 1946-1 Humboldt Eureka Comment
  UC1198914  Ribes sanguineum Joseph P. Tracy 1935-7-22 14125 Humboldt Forks of Tish-Tang-a-Tang Creek Trinity Summit 1371 Comment
  UC902091  Ribes sanguineum Joseph P. Tracy 1948-9-5 18178 Humboldt ne Hawkins Bar; Trinity Summit Range, Happy Camp Mountain 1280 Comment
  RSA0019095  Ribes sanguineum Jim R. Shevock 1978-3-26 1471 Humboldt Along Highway 299. 305 Comment
  CAS-BOT-BC144687  Ribes sanguineum var. glutinosum Ira L. Wiggins 1930-7-22 4693 Humboldt Along bank of Redwood Creek between Blue Lake and Willow Creek Comment
  UC667052  Ribes sanguineum var. glutinosum Joseph P. Tracy 1939-5-14 16290 Humboldt opposite Buck Mountain (Dinsmore's); Van Duzen River 762 Comment
  RSA0018241  Ribes sanguineum var. glutinosum Lincoln Constance, R. C. Rollins 1942-5-11 2866 Humboldt Near summit 8 miles east of Blue Lake. Comment
  CDA25591  Ribes viscosissimum Gordon Leppig 1998-6-1 865 Humboldt Horse Mountain. Buck Flat, Titlow Hill Road at Ammon Ridge Road. Comment
  UC1541335 Image available Ribes viscosissimum W. K. Parks July 1933 Humboldt South Fork Mountain Comment
  CAS-BOT-BC362906  Rigiopappus leptocladus Volney Rattan 1883-6-1 s.n. Humboldt Unspecified Comment
  HSC13750  Romanzoffia californica Doris K. Kildale 1926-3-21 1574 Humboldt Kneeland Prairie Comment
  JEPS1248  Romanzoffia californica Joseph P. Tracy 1923-4-29 6196 Humboldt Kneeland Prairie 762 Comment
  JEPS2836 Image available Romanzoffia tracyi Joseph P. Tracy 1933-5-9 11008 Humboldt wet slide on bluff near Ocean; Northern Coast Region, Vicinity of Trinidad; Vicinity of Trinidad, Humboldt Co. 15 Comment
  UC775205  Romanzoffia tracyi H. E. and S. T. Parks 1933-3-1 5269 Humboldt Spruce Cove 2 mi n of Trinidad; Spruce Cove Comment
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Jun 26 2012
  RSA0003890  Romanzoffia tracyi H. E. Parks, J. P. Tracy 1933-5-9 11008 Humboldt Vicinity of Trinidad. 15 Comment
  UC1222650  Rorippa curvisiliqua Joseph P. Tracy 1950-7-6 19021 Humboldt 3 mi s Burr Valley (high meadow on w side Buck Mountain, Valley on the Albee Road); high meadow on w side Buck Mountain, s Burr Valley 1158 Comment
  UC495640  Rorippa curvisiliqua Joseph P. Tracy 1932-10-30 10902 Humboldt Eel River on gravel bars Alton Fortuna; Northern Coast Region, Eel River 15 Comment
  UCD115287  Rorippa curvisiliqua Malcolm A. Nobs; S. Galen Smith 1949-8-9 1238 Humboldt on southern side of the town of Blue Lake. Comment
  HSC99388  Rorippa nasturtium-aquaticum K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-6-28 37 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  UC205457  Rorippa nasturtium-aquaticum Joseph P. Tracy 1919-5-31 5169 Humboldt along Willow Creek (tributary of Trinity River) near its mouth Northern Coast Ranges, along Willow Creek 152 Comment
  HSC19619  Rosa canina D. E. Anderson 1965-5-15 3700 Humboldt 5 mi. N of Hoopa on Bald Hills Rd. 198 Comment
  BLMAR77  Rosa gymnocarpa Jennifer Anthony-Wheeler 1994-6-2 77 Humboldt IAQUA, growing along logging rd 3/4mi from beginning of rd 853 Comment
  CAS-BOT-BC146475  Rosa gymnocarpa Doris K. Kildale 1925-8-16 1142 Humboldt Trinity Summit Trail between Horse Linto Creek & [Tish-tang-i-tang] Tish Tang a Tang 1371 Comment
  CAS-BOT-BC146495  Rosa gymnocarpa C. B. Wolf 1931-8-30 2376 Humboldt 11 miles above Blue Lake on the Lord Ellis Road to Willow Creek 304 Comment
  HSC35592  Rosa gymnocarpa Thomas W. Nelson, Jane P. Nelson, James Nelson 1975-7-15 2003 Humboldt French Camp, Bald Hills. Comment
  HSC70507  Rosa gymnocarpa Gail Newton 1980-7-20 1647 Humboldt Near Bell Swamps 1426 Comment
  HSC99263  Rosa gymnocarpa C. B. Wolf 1927-8-30 1259 Humboldt 3 mi. S of Thorn along old coast road Comment
  HSC99305  Rosa gymnocarpa C. B. Wolf 1927-8-30 1232 Humboldt 2 mi. S of Petrolia on the Matole River near the road crossing the river Comment
  POM365829  Rosa gymnocarpa Jane Turner, F. M. Ball 1962-7-10 1143 Humboldt East Fork Willow Creek Forest Camp, Hwy 299 ca. 5 mi. W of Willow Creek in Six Rivers National Forest. 457 Comment
  UC902159  Rosa gymnocarpa Joseph P. Tracy 1949-8-7 18437 Humboldt near Box Camp; Trinity Summit 1524 Comment
  CAS-BOT-BC146843  Rosa nutkana Carl B. Wolf 1931-8-28 2364 Humboldt 1/8 mile from Rohnerville on the road to Fortuna 30 Comment
  UC1281125  Rosa nutkana var. nutkana H. E. McMinn 1937-12-2 3711 Humboldt sea-cliff n Eureka Comment
  UC588192  Rosa nutkana var. nutkana H. E. and S. T. Parks May 1937 5816 Humboldt Spruce Cove Trinidad 60 Comment
  UC154203  Rosa pisocarpa Joseph P. Tracy 1908-6 2873 Humboldt opposite Buck Mountain; Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  UC667036  Rosa pisocarpa Joseph P. Tracy 1934-7-18 13416 Humboldt Grouse Mt. 1432 Comment
  HSC19623  Rosa rubiginosa D. E. Anderson 1965-9-5 4096 Humboldt Along Mad River, 3 mi. S of Blue Lake Comment
  UCD17926  Rubus H. Olmo; T. S. Mallah 1953-4-3 53 61 Humboldt California. Humboldt County: 0.5 miles south of cemetary alongside highway in Rohnerville. East of airport. Comment
  POM182019  Rubus laciniatus F. W. Peirson 1923-7-10 3755 Humboldt Wood border opening near road about 6 miles N of Garberville. Comment
  JEPS47292  Rubus lasiococcus Joseph P. Tracy 1932-7-16 10640 Humboldt in fir woods near Corral Prairie (Trinity Summit); Klamath Mountains, , near Corral Prairie 1524 Comment
  CAS-BOT-BC147247  Rubus parviflorus Harold E. Parks; Joseph P. Tracy 1942-5-16 11562 Humboldt Vicinity of Garberville 152 Comment
  NY1043364  Rubus parviflorus D. K. Gillespie 1938-8-6 15397 Humboldt Eureka Comment
  SEINET3111190  Rubus parviflorus var. parviflorus Steve Selva, Roger Jensen 1974-8-28 98 Humboldt Redwood Forest behind Humboldt State University, Arcata. Comment
  CAS-BOT-BC156719  Rubus spectabilis David D. Keck; J. Clausen 1935-6-16 3394 Humboldt Mouth of Little River, at roadside Comment
  CHSC61999  Rubus spectabilis J. R. Biddison 1993-4-6 15 Humboldt Elk Prairie campground, Prairie Creek Redwoods State Park. Next to creek. 30 Comment
  HSC100638  Rubus spectabilis Carl C. Marshall Apr 1886 165 Humboldt Everywhere in rich soils. Comment
  HSC19676  Rubus spectabilis Lincoln Constance 1934-6-2 780 Humboldt Bull Creek Rd. to mouth of Bull Creek, top Bull Creek Comment
  HSC19687  Rubus spectabilis R. E. Hafenfeld 1965-5-9 6 Humboldt 1/4 mi. from County Rd. and Gold Bluff Beach Rd. jct. Comment
  HSC19692  Rubus ursinus W. L. Jepson 1932-8-8 16528 Humboldt Weott 305 Comment
  HSC57022  Rubus ursinus Overton, Butler 1979-7-24 9637 Humboldt Near Friday Camp, close to the town of Willow Creek. 1250 Comment
  RSA183575  Rubus ursinus R. I. Bonn 1965-4-23 19 Humboldt 4 miles W of Arcata on Lanphere Rd. Comment
  UC1199052  Rubus ursinus Joseph P. Tracy 1935-5-25 13827 Humboldt along headwaters Larrabee Creek (Blocksburg); along headwaters of Larrabee Creek 457 Comment
  UC183555  Rubus ursinus Joseph P. Tracy 1913-6-14 4129 Humboldt opposite Buck Mountain (Dinsmore's Ranch); Northern Coast Ranges, valley of Van Duzen River, Dinsmore's 762 Comment
  UC672930  Rumex acetosella Joseph P. Tracy 1932-7-14 10530 Humboldt Corral Prairie Trinity Summit 1584 Comment
  HSC90648  Rumex crispus Gail Newton 1982-6-10 3611 Humboldt Elk River Wildlife Area, Eureka Comment
  JEPS39930  Rumex maritimus W. L. Jepson 1921-8-7 9329 Humboldt Stone Lagoon Humboldt Coast Comment
  HSC17604  Rumex persicarioides D. E. Anderson 1961-9-13 1812 Humboldt Trinidad Beach Comment
  CDA2887  Rumex pulcher T. C. Fuller 1958-6-17 589 -58 Humboldt Hydesville. 0 Comment
  UC672922  Rumex salicifolius var. salicifolius Joseph P. Tracy 1932-7-11 10405 Humboldt Corral Prairie Trinity Summit 1584 Comment
  UC1191279  Rumex salicifolius var. transitorius Malcolm A. Nobs and S. Galen Smith 1958-8-9 1237 Humboldt s end Blue Lake (town) (on Mad River); Mad River Comment
  CAS-BOT-BC454099  Ruppia cirrhosa Malcom A. Nobs; S. Galen Smith 1949-8-3 1182 Humboldt Near mouth of the Elk River on Highway 101, ca. 4 miles south of Eureka Comment
  HSC49621  Ruppia maritima R. York 1979-5-23 311 Humboldt Old abandoned logging pond at the S end of H St. in Arcata 0 Comment
  UCD138323  Ruppia maritima Malcolm A. Nobs; S. Galen Smith 1949-8-3 1181 Humboldt Near mouth of the Elk River on Highway 101, ca. 4 miles south of Eureka. Comment
  UC1116232  Sagina apetala Joseph P. Tracy 1948-4-11 17965 Humboldt 2 mi. e. Dyerville (Eel R.); Eel R. 48 Comment
  JEPS79973  Sagina maxima subsp. crassicaulis Joseph P. Tracy 1940-5-18 16564 Humboldt Trinidad 15 Comment
  SEINET10965499  Salicornia Mary Susan Taylor 1990-8-22 Taylor 6087 Humboldt Cypress Grove Area, Samoa Peninsula, along strand, Eureka. Comment
  HSC49825  Salicornia depressa R. York 1979-5-18 299 Humboldt From area around Humboldt Bay. 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-BC132668  Salix A. T. Whittemore 1980-3-15 80 -002 Humboldt Arcata, in residential area, along Alliance Road from Foster Ave. to the railroad tracks Comment
  CAS-BOT-BC129889  Salix bonplandiana Mrs. H. P. Bracelin 1931-5-1 271 Humboldt Sylvandale, between Miranda and Meyers, South Fork of Eel River Comment
  CAS-BOT-BC103807  Salix exigua W. R. Dudley 1899-6-21 s.n. Humboldt near bluff below junction of North and South Forks of Eel River Comment
  JEPS14753  Salix exigua Joseph P. Tracy 1932-6-14 10151 Humboldt at Willow Creek Trinity River Valley; Northern Coast Region 152 Comment
  RSA5652  Salix exigua H. E. Parks, Joseph P. Tracy 1931-5-17 971 Humboldt Mouth of Willow Creek at Trinity River. 150 Comment
  SJSU275  Salix exigua var. exigua H. E. Parks & J. P. Tracy 1931-5-17 967 Humboldt Mouth of Willow Cr at Trinity R 152 Comment
  CAS-BOT-BC104099  Salix hindsiana Harold E. Parks; Joseph P. Tracy 1931-5-17 0969 Humboldt Mouth of Willow Creek at Trinity River 150 Comment
  CAS-BOT-BC106851  Salix hookeriana Harold E. Parks 1931-5-12 0953 Humboldt Samoa, Humboldt Bay Comment
  CAS-BOT-BC107728  Salix hookeriana Harold E. Parks 1931-8-1 1057 Humboldt Bishop Pine Lodge, Trinidad 150 Comment
  CAS-BOT-BC107749  Salix hookeriana Harold E. Parks 1931-5-12 953 Humboldt Samoa, Humboldt Bay Comment
  CAS-BOT-BC107766  Salix hookeriana Harold E. Parks; Carleton R. Ball; Joseph P. Tracy 1932-5-11 1210 b Humboldt Little River Lagoon, 4 1/2 miles south of Trinidad Comment
  CHSC31280  Salix hookeriana Mark Stopher 1980-3-26 42 Humboldt Adjoining Hwy 101 right of way near Elk River. Comment
  CHSC9557  Salix hookeriana E. L. Smith 1971-4-6 927 Humboldt Manila, 4 mi sw of Arcata, on w side of Humboldt Bay opposite Eureka. 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
  POM161042  Salix hookeriana Joseph P. Tracy 1926-11-21 7831 Humboldt Near mouth of Little River. 6 Comment
  SD937  Salix hookeriana Harold E. Parks 1931-5-28 999 Humboldt Little River Lagoon Comment
  UC1196548  Salix hookeriana Joseph P. Tracy 1926-1-10 7344 Humboldt Carlotta Northern Coast Ranges, Carlotta 60 Comment
  UC1196673  Salix hookeriana Joseph P. Tracy 1925-11-15 7315 Humboldt Table Bluff Northern Coast Region, around Humboldt Bay (same region as #6929) 60 Comment
  UC275526  Salix hookeriana Joseph P. Tracy 1924-9-21 6884 Humboldt Eureka Northern Coast Ranges, Eureka 0 Comment
  UC469122  Salix hookeriana Joseph P. Tracy 1927-5-1 7953 Humboldt sand dunes near Samoa; Northern Coast Region, Humboldt Bay 6 Comment
  UC470437  Salix hookeriana Joseph P. Tracy 1931-10-18 9738 Humboldt Camp Grant Northern Coast Ranges, Eel River 60 Comment
  UC481396  Salix hookeriana Harold E. Parks 1931-3-24 914 Humboldt Fortuna Eel River (bank of river) 10 Comment
  UC492344  Salix hookeriana Harold E. and Susan T. Parks 1932-4-10 1103 a Humboldt Little River Lagoon Trinidad Comment
  UC511999  Salix hookeriana Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-12 1238 Humboldt floodplain of Van Duzen R. at Blue Slide 91 Comment
  UC518898  Salix hookeriana Jim Davis Apr 25 1933-Apr 27 1933 4 Humboldt around Eureka Comment
  UC519341  Salix hookeriana Joseph P. Tracy 1933-7-20 12808 Humboldt near Blue Lake (on gravel bar); Northern Coast Region, Mad River 15 Comment
  RSA0034665  Salix hookeriana var. tomentosa Harold E. Parks 1931-5-12 0952 Humboldt Samoa, Humboldt Bay. 0 Comment
  UC275503  Salix laevigata Joseph P. Tracy 1925-11-1 7301 Humboldt Shively, along Eel R. from S. Fork to Scotia Northern Coast Ranges, Eel R., Shively 60 Comment
  UC1196577  Salix lasiandra subsp. lasiandra J. P. Tracy 1901-3-31 995 Humboldt immediate vicinity Eureka 0 Comment
  CAS-BOT-BC128191  Salix lasiandra var. lasiandra Harold E. Parks; Susan T. Parks 1931-8-15 1078 Humboldt Blue Slide, Van Duzen River 100 Comment
  CAS-BOT-BC107578  Salix lasiolepis Joseph P. Tracy 1934-3-25 13166 Humboldt Blue Slide, on Van Duzen River 91 Comment
  CAS-BOT-BC107583  Salix lasiolepis Joseph P. Tracy; Carleton R. Ball; Harold E. Parks 1932-5-13 1254 Humboldt Floodplain of Mad River at Engelhart gravel pit, 2 miles east of Redwood Highway and above Blue Lake Road Comment
  CAS-BOT-BC107598  Salix lasiolepis Joseph P. Tracy 1933-4-2 10959 Humboldt On slope of Berry's Mountain, on Trinity Highway, east of Redwood Creek 762 Comment
  CAS-BOT-BC107608  Salix lasiolepis Joseph P. Tracy; Harold E. Parks; Carleton R. Ball 1932-5-17 1323 Humboldt On west slpe of Berry's Mountain, east of Redwood Creek, on Trinity Highway 762 Comment
  HSC96359  Salix lasiolepis Gordon Leppig 1999-4-15 1116 Humboldt Big Lagoon County Park, Big Lagoon Bog, W fen edge 3 Comment
  HSC98056  Salix lasiolepis Cara Witte 2007-7-2 395 Humboldt Cold Spring. 1/2 mile south of Titlow Hill. 1392 Comment
  JEPS14784  Salix lasiolepis Joseph P. Tracy 1933-3-14 12184 Humboldt on Trinity Hwy. Berry's Mt.; North Coast Ranges, Berry's Mt. 762 Comment
  POM219249  Salix lasiolepis H. E. Parks, Susan T. Parks 1931-8-15 1079 Humboldt Blue Slide. Van Duzen River. 100 Comment
  SBBG57889  Salix lasiolepis H. E. Parks, J. P. Tracy 1931-5-17 976 Humboldt mouth of Willow Crk at Trinity River 150 Comment
  UC1196627  Salix lasiolepis Joseph P. Tracy 1935-5-25 13890 Humboldt North Dobbyn Creek Dobbyn Creek 152 Comment
  UC469406  Salix lasiolepis Joseph P. Tracy 1927-3-27 7867 Humboldt at Berry's Redwood Creek; Northern Coast Ranges, Redwood Creek 274 Comment
  UC504026  Salix lasiolepis Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-17 1319 Humboldt Redwood Creek, at Berry's, on Trinity Highway 274 Comment
  UC506375  Salix lasiolepis Joseph P. Tracy 1933-4-9 10963 Humboldt Bridgeville 228 Comment
  UC506388  Salix lasiolepis Joseph P. Tracy 1932-8-21 10357 Humboldt Three Cabins Northern Coast Ranges, Chaparral Mountain (on lower western foothills of mt.) 457 Comment
  UC511991  Salix lasiolepis Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-12 1241 Humboldt Blue Slide Van Duzen River 91 Comment
  UC512029  Salix lasiolepis Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-17 1329 Humboldt e Redwood Creek (w slope of mt., on Trinity Hwy); Berry's Mountain 762 Comment
  UC519331  Salix lasiolepis Joseph P. Tracy 1933-10-8 13085 Humboldt Blue Slide, on Van Duzen River 91 Comment
  UC519339  Salix lasiolepis Joseph P. Tracy 1933-5-14 12177 Humboldt Willow Creek Trinity River Valley (mouth) 152 Comment
  UC519349  Salix lasiolepis Joseph P. Tracy 1913-11-12 13115 Humboldt Miranda North Coast Ranges, South Fork of Eel River 91 Comment
  UC709424  Salix lasiolepis Joseph P. Tracy 1941-3-9 16802 Humboldt Camp Grant Eel River (on gravel bar of river) 48 Comment
  UCD111583  Salix lasiolepis Carleton R. Ball; Harold E. Parks, Joseph P. Tracy 1932-5-13 01254 Humboldt Mad River at Engelhart gravel pit, 2 miles east of Redwood Highway and above Blue Lake Road. Comment
  CAS-BOT-BC107292  Salix lasiolepis var. bigelovii Carleton R. Ball; Harold E. Parks; Joseph P. Tracy 1932-5-12 01241 Humboldt floodplain of Van Duzen River at Blue Slide 91 Comment
  CAS-BOT-BC107408  Salix lasiolepis var. lasiolepis Doris K. Kildale 1927-5-13 3145 Humboldt Redwood Creek at Berry's 289 Comment
  CAS-BOT-BC107417  Salix lasiolepis var. lasiolepis Doris K. Kildale 1926-7-27 2220 Humboldt Laribee Valley 701 Comment
  CAS-BOT-BC107420  Salix lasiolepis var. lasiolepis Alice Eastwood 1913-7-3 3416 Humboldt Bear River, McCourtneys Bridge Comment
  CAS-BOT-BC125623  Salix melanopsis Harold E. Parks 1931-5-14 0960 Humboldt Van Duzen River between Alton and Carlotta 15 Comment
  LA208878  Salix melanopsis Harold E. Parks; Joseph P. Tracy 1931-5-17 972 Humboldt mouth of Willow Creek at Trinity River 150.0 Comment
  UC1173616  Salix melanopsis Joseph P. Tracy 1937-8-3 15611 Humboldt near Blue Lake (along Mad R.); Mad R. 15 Comment
  UC1196638  Salix melanopsis Joseph P. Tracy 1932-8-27 10746 Humboldt on Van Duzen R. Blue Slide; Northern Coast Ranges, Van Duzen R. 91 Comment
  UC469458  Salix melanopsis Joseph P. Tracy 1931-9-19 9681 Humboldt Van Duzen R. Alton; Northern Coast Region, Van Duzen R. 30 Comment
  UC490570  Salix melanopsis Joseph P. Tracy 1932-6-4 10129 Humboldt Bridgeville Northern Coast Ranges, Bridgeville 228 Comment
  CAS-BOT-BC129248  Salix piperi Joseph P. Tracy 1937-8-12 15658 Humboldt Snow Camp, most gourn in and around meadow. 1402 Comment
  CAS-BOT-BC129250  Salix piperi Carleton R. Ball; Harold E. Parks; Joseph P. Tracy 1932-5-11 1210 a Humboldt Little River Lagoon, 4 1/2 miles south of Trinidad, appraximately at sea level. Comment
  CAS-BOT-BC129130  Salix scouleriana Harold E. Parks 1931-5-20 994 Humboldt Blue Lake, Mad River 15 Comment
  CAS-BOT-BC129151  Salix scouleriana Doris K. Kildale 1927-5-13 3146 Humboldt Redwood Creek at Berry's 289 Comment
  JEPS89298  Salix scouleriana Joseph P. Tracy 1937-3-21 15236 Humboldt Van Duzen R. near Grizzly Creek; Van Duzen R. 91 Comment
  POM209563  Salix scouleriana H. E. Parks 1933-1-24 1353 Humboldt Spruce Grove (Parks Ranch). Trinidad. Comment
  RSA273324  Salix scouleriana Thomas W. Nelson 1976-11-3 3279 Humboldt Eureka. E side of F St. ca 3800 block. Comment
  UC1196702  Salix scouleriana Joseph P. Tracy 1926-10-12 7812 Humboldt near mouth of S. Fork Trinity R. MirandaFour Mile creek; Northern Coast Ranges, Four Mile Creek 609 Comment
  UC470447  Salix scouleriana Joseph P. Tracy Jul 16 1930-Jul 19 1930 9095 Humboldt forest near McKay Camp (S. Fork Mt.); Northern Coast Ranges, S. Fork Mt. 1676 Comment
  UC490528  Salix scouleriana Joseph P. Tracy 1932-7-17 10694 Humboldt head of Devil's Hole; Klamath Mts., Trinity Summit 1828 Comment
  UC512088  Salix scouleriana Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-11 1219 Humboldt pine barrens near coast 1 mi. n. Samoa Comment
  CAS-BOT-BC126273  Salix sessilifolia H. E. Parks; Joseph P. Tracy 1934-7-25 11090 Humboldt Trinity River Valley, at Willow Creek 152 Comment
  CAS-BOT-BC128962  Salix sitchensis W. J. Ferlatte 1967-6-13 1116 Humboldt Coastal strand, dunes, Samoa Peninsula 3 Comment
  CAS-BOT-BC128990  Salix sitchensis Doris K. Kildale 1926-3-28 1690 Humboldt Redmond Creek near Berry's 289 Comment
  CHSC9650  Salix sitchensis E. L. Smith 1971-8-17 1021 Humboldt At Field's Landing ca. 7 mi s of Eureka. Comment
  HSC102510  Salix sitchensis M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-28 1495 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1106 Comment
  HSC20106  Salix sitchensis H. E. Parks 1931-3-24 913 Humboldt Vicinity of Fortuna Comment
  HSC90192  Salix sitchensis Jean Hanson 1980-3-8 6 Humboldt Indian (Gunther) Island, Humboldt Bay, Eureka, W end of island Comment
  HSC96575  Salix sitchensis Gordon Leppig 2003-2-20 1805 Humboldt Eureka Slough, Cooper Gulch 5 Comment
  HSC96588  Salix sitchensis Gordon Leppig 2003-2-22 1817 Humboldt Mad River Beach, near parking lot 3 Comment
  HSC96615  Salix sitchensis Gordon Leppig 2005-4-8 2206 Humboldt N Spit Swamp, W side of highway 3 Comment
  JEPS38446  Salix sitchensis Joseph P. Tracy 1926-12-5 7833 Humboldt on Van Duzen River Blue Slide; Northern Coast Ranges 91 Comment
  POM219562  Salix sitchensis H. E. Parks 1931-3-25 903 Humboldt Orick. Van Duzen River. 6 Comment
  UC481215  Salix sitchensis Harold E. Parks 1931-5-20 995 Humboldt Mad R. Blue Lake; , Blue Lake 15 Comment
  UC490500  Salix sitchensis Joseph P. Tracy 1932-10-2 10857 Humboldt Redwood Creek near Bair's; Northern Coast Ranges, Redwood Creek 213 Comment
  UC506362  Salix sitchensis Joseph P. Tracy 1933-3-19 10928 Humboldt Van Duzen R. Blue Slide; Northern Coast Ranges, , Blue Slide 91 Comment
  UC1196609  Salix tracyi Joseph P. Tracy 1934-9-30 13680 Humboldt Van Duzen River at Bridgeville 198 Comment
  JEPS86686  Sambucus mexicana L. R. Heckard with T. I. Chuang 1990-7-15 6768 Humboldt South Fork Mountain Rd. ca 11 mi n Hwy 36 (near Mad River jct.) 1740 Comment
  HSC34632  Sambucus racemosa var. racemosa R. M. Sullivan 1975-4-9 1 Humboldt 2 mi. S of Trinidad on old Hwy. 101 Comment
  UC1119901  Sambucus racemosa var. racemosa G. T. Nordstrom 1937-7-1 1446 Humboldt 1.7 mi wsw Orick; Orick Quadrangle Comment
  UCSB16744  Sambucus racemosa var. racemosa Muller, Katherine 1954-6-20 Humboldt 3 mi. S. of Scotia Comment
  HSC1798  Sanguisorba minor William J. Ferlatte, B. D. Rogers 1966-8-15 3122 Humboldt 1/2 mi. E of Azalea State Park Comment
  CAS-BOT-BC157199  Sanguisorba officinalis Carl B. Wolf 1934-7-2 5901 Humboldt Snow Camp (mts. E. of Korbel), near small lake 1371 Comment
  HSC21615  Sanicula arctopoides R. T. Forester 1963-3-13 22 Humboldt 1/2 mi. N of Fairhaven on Samoa Rd. Comment
  HSC77517  Sanicula arctopoides K. Berg 1984-4-8 527 Humboldt South spit of Humboldt Bay, 1.4 mi. S of South Jetty, E of road Comment
  HSC56174  Sanicula graveolens G. L. Clifton, Terry Griswold 1979-8-1 12078 Humboldt Near N Trinity Mtn., close to the town of Hoopa. 1798 Comment
  JEPS1001  Sanicula graveolens Joseph P. Tracy 1926-5-2 7448 Humboldt nar Ruby Creek (Northern Coast Ranges, Willow Creek Canyon); Northern Coast Ranges, Willow Creek Canyon 609 Comment
  UC1197094  Sanicula graveolens Joseph P. Tracy 1926-5-30 7520 Humboldt near Ruby Creek (Northern Coast Ranges, Willow Creek Canyon); Northern Coast Ranges, Willow Creek Canyon 609 Comment
  HSC82105  Sanicula tracyi Thomas W. Nelson, Jane P. Nelson 1980-5-25 5260 Humboldt Along road from Dinsmore to Anderson Crossing- McKeown Ranch Rd.- 0.5 mi. NW of McKeown house 823 Comment
  RSA167239  Sanicula tracyi Joseph P. Tracy 1950-7-6 19022 Humboldt Sproston s Place, 3 miles south of Burr Valley 1067 Comment
  HSC96245  Sanicula tuberosa M. Lindquist, C. Riley 2005-6-3 3 Humboldt 19.3 mi. S of Hwy. 299 on NF 1 1205 Comment
  UC1197079  Sanicula tuberosa Joseph P. Tracy 1922-5-14 6045 Humboldt Northern Coast Ranges, Kneeland Prairie Kneeland Prairie; Northern Coast Ranges, Kneeland Prairie 762 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
  UC314593  Sanicula tuberosa Joseph P. Tracy 1923-7-4 6528 Humboldt Northern Coast Ranges, Valley of South Yager Creek South Yager Creek; Northern Coast Ranges, Valley of South Yager Creek 762 Comment
  SEINET3240200  Santalaceae R. L. Mathiasen 2003-1 2003 -51 Humboldt 0.2 km NW of Blake Mountain on for. rd. 02N01 1760 Comment
  UC1198885  Saxifraga aprica Joseph P. Tracy 1935-7-28 14313 Humboldt head of Devil's Hole (Trinity Summit); , Devil's Hole 1828 Comment
  POM266005  Saxifraga mertensiana Lincoln Constance, Reed C. Rollins 1942-5-11 2869 Humboldt 3 miles W of East Fork of Willow Creek. Comment
  RSA114993  Saxifraga mertensiana E. K. Balls, L. W. Lenz 1955-5-15 20733 Humboldt 6.4 miles SW of Willow Creek along US Hwy 299 to Arcata. 457 Comment
  JEPS95079  Schoenoplectus pungens var. badius Vernon Oswald and Lowell Ahart 1997-9-4 8848 Humboldt Big Lagoon County Park, at sw edge of Big Lagoon, entering lagoon at boat ramp Big Lagoon; North Coast Region, Big Lagoon County Park, Big Lagoon 3 Comment
  UCD60367  Schoenoplectus pungens var. badius Gordon Leppig 1998-6-25 855 Humboldt McKinleyville, Mad River Estuary at end of Murray Rd. 0 Comment
  CAS-BOT-BC111704  Schoenoplectus pungens var. badius Doris K. Kildale 1927-6-25 3550 Humboldt Shelter Cove, coastal Comment
  UC419066  Scirpus acutus var. occidentalis H. E. Parks 1930-9-14 771 Humboldt n shore Big Lagoon; n shore Big Lagoon Comment
  UC668018  Scirpus acutus var. occidentalis Joseph P. Tracy 1934-7-20 13472 Humboldt Big Lagoon 3 Comment
  HSC7495  Scirpus congdonii J. P. Tracy 1937-8-12 15638 Humboldt Snow Camp 1402 Comment
  CAS-BOT-BC110927  Scirpus microcarpus Kenneth Clark 1980-4-18 601 Humboldt Point Delgada quad. In marsh area of upper meadow above Dead Man's Gulch 213 Comment
  UC50825  Scirpus pungens J. P. Tracy 1902-8-10 1765 Humboldt immediate vicinity Eureka 0 Comment
  SEINET5161340  Scoliopus bigelovii Unknown 1998-3-10 s.n. Humboldt southern Humbolt County Comment
  UC1103492  Scoliopus bigelovii Joseph P. Tracy 1936-4-26 14808 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
  CAS-BOT-BC517412  Scoliopus bigelovii Leo Shapovalov; C. Woodhull 1940-3-6 s.n. Humboldt Redwood Creek near Garberville in Humboldt Redwood State Park Comment
  UC147885  Scrophularia californica J. P. Tracy 1906-5-20 2465 Humboldt immediate vicinity Eureka 0 Comment
  UC582592  Scrophularia californica Joseph P. Tracy 1933-8-22 12980 Humboldt Eureka 6 Comment
  HSC21130  Scrophularia californica P. Markle 1962-5-19 49 Humboldt Arcata Community Forest, along trail branching off of cross country track, near old lumber mill Comment
  RSA475245  Scrophularia californica Lyman D. Benson 1938-7-11 385 Humboldt Weott Ranger Station. Seaward N Coast Mtn range, S Fork Eel River. 61 Comment
  SEINET10548800  Scrophularia californica Charlene A. Bennett 1976-8-6 Bennett 480 Humboldt Collected by hwy 101, n side of orick, rocky area, densely forested by river. Comment
  CHSC68503  Scrophularia californica subsp. californica Vernon H. Oswald 1997-4-10 8318 Humboldt Road paralleling Hwy. 101 between Clam Beach and Little River State Beach, north of Arcata. 30 Comment
  HSC98722  Scutellaria antirrhinoides Cara Witte 2008-7-16 918 Humboldt Board Camp Mountain. Forest Service Road 4N38. 1/2 mile south of intersection with National Forest 1. 1409 Comment
  UC1239697  Scutellaria antirrhinoides Joseph P. Tracy 1934-6-19 13238 Humboldt Carlotta; Northern Coast Ranges, Carlotta 60 Comment
  UC577340  Scutellaria californica Joseph P. Tracy 1937-7-11 15423 Humboldt vicinity of Garberville 121 Comment
  CAS-BOT-BC63879  Sedum laxum subsp. heckneri Joseph P. Tracy 1935-7-30 14363 Humboldt Salmon summit. 1767 Comment
  HSC32276  Sedum obtusatum subsp. retusum D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5627 Humboldt Mt. Lassic and two smaller peaks to immediate E 1768 Comment
  JEPS48046  Sedum radiatum W. L. Jepson 1902-6-20 1890 Humboldt Ft. Seward Ranch Ridge Ft. Seward Ranch ridge, Mail Ridge (= Mail Ridge, Rocky points) 1066 Comment
  HSC70962  Sedum spathulifolium var. spathulifolium Thomas W. Nelson 1977-6-15 3456 Humboldt Along Titlow Hill Rd., 3/4 mi. S of junction with Hwy. 299 Comment
  HSC100143  Selaginella kraussiana G. F. Hrusa, R. Bencie, L. Bencie, C. Dogwin, and E. Dogwin 2010-12-29 18277 Humboldt Forest E of Humboldt State University, above Fern Lake 47 Comment
  HSC925  Selaginella oregana J. P. Tracy 1933-5-18 12196 Humboldt Mad River, near Blue Lake 15 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
  HSC100445  Senecio bolanderi Carl C. Marshall Jul 1885 133 Humboldt Near Jarnigan's. Comment
  CDA8588  Senecio bolanderi var. bolanderi Gordon Leppig, M. Renner 2005-6-7 2246 Humboldt Pacific Lumber Company land. Redwood House Road, Hely Creek watershed. Comment
  RSA275307  Senecio elegans Thomas W. Nelson 1978-4-23 3880 Humboldt Adventive on coastal dunes northwest of Samoa Comment
  CAS-BOT-BC364021  Senecio integerrimus var. major Doris K. Kildale 1926-5-2 1896 Humboldt Willow Creek Flat 152 Comment
  UC581706  Senecio integerrimus var. major Joseph P. Tracy 1933-7-11 12703 Humboldt Grouse Mountain North Coast Ranges 1524 Comment
  UC1223047  Senecio jacobaea Joseph P. Tracy 1946-8-18 17626 Humboldt e side along highway Big Lagoon Comment
  UC581693  Senecio minimus Joseph P. Tracy 1937-7-18 15446 Humboldt s fork Eel River 60 Comment
  UC1223153  Senecio sylvaticus Joseph P. Tracy 1941-8-17 16992 Humboldt near High Prairie (Bald Mountain); Bald Mountain Comment
  CAS-BOT-BC85840  Sequoia sempervirens Joseph P. Tracy 1926-2-21 7355 Humboldt Blue Slide, on Van Duzen River 91 Comment
  CHSC61945  Sequoia sempervirens J. R. Biddison 1993-4-6 10 Humboldt Prairie Creek Redwoods State Park, Fern Canyon picnic area, 10 mi n of Orick, off hwy 101. 15 Comment
  HSC37393  Sequoia sempervirens Gary S. Lester, Roger L. Yearout, Judith G. Dickson 1974-7-24 500 Humboldt Along Lost Man Creek. 38 Comment
  RSA175208  Sequoia sempervirens Robert F. Thorne 1957-9-2 18996 Humboldt Burlington State Park, just S of Weott. Comment
  UC1076381  Sequoia sempervirens H. MacGinitie 1932-6-7 Humboldt Comment
  SEINET10612350  Sequoia sempervirens Huron H. Smith 1911-6-16 Smith 3824 Humboldt [Vances Canyon # 20] Field Museum of Natural History Comment
  UC602552  Sherardia arvensis Joseph P. Tracy 1937-6-20 15337 Humboldt 10 mi from mouth Bear River Comment
  UC108909  Sidalcea asprella subsp. nana W. W. Price 1890-7-1 Humboldt Mad River Comment
  CAS-BOT-BC205573  Sidalcea malachroides Alice Eastwood; John Thomas Howell 1937-6-23 4856 Humboldt 8 miles from Korbel on road to Maple Creek Comment
  RSA33405  Sidalcea malachroides Doris K. Kildale 1927-7-2 s.n. Humboldt Lord (?) Ellis Road, near Korbel Comment
  SDSU8182  Sidalcea malachroides D. F. Howe 1969-6-4 4626 Humboldt 14.5 miles east of Alton on #36 91 Comment
  HSC100702  Sidalcea malachroides Carl C. Marshall Jun 1886 29 Humboldt Mad River region. Comment
  SEINET11982176  Sidalcea malachroides J. P. Tracy 1950-1 19034 Humboldt on Butter Valley Rd, 2 mi E of Cameron Hill Jct near Kneeland Comment
  UC665632  Sidalcea malviflora subsp. patula H. E. Parks May, 1940 24177 Humboldt Dow's Prairie 30 Comment
  UC902194  Sidalcea malviflora subsp. patula Joseph P. Tracy 1944-5-14 17472 Humboldt bluff back Bucksport (Eureka); bluff back of Buckport, Eureka 15 Comment
  UC502940  Sidalcea oregana subsp. spicata Joseph P. Tracy 1932-7-10 10382 Humboldt Corral Prairie Klamath Mountains, , Corral Prairie (Trinity Summit) 1524 Comment
  HSC101060  Sidalcea oregana subsp. spicata Sydney Carothers, Thomas W. Nelson 1996-8-18 191 Humboldt Six Rivers National Forest; Groves Prairie 451 Comment
  HSC73819  Silene Gail Newton 1980-6-7 117 Humboldt Near Brush Mtn. 1128 Comment
  HSC41202  Silene bernardina Thomas W. Nelson, Jane P. Nelson 1977-7-4 3602 Humboldt Along old trail above Alder Springs 1555 Comment
  UC465675  Silene californica P. E. Goddard 1907-5-29 f 101 Humboldt Van Duzen Comment
  UC668094  Silene campanulata Joseph P. Tracy 1930-7-18 9032 Humboldt near McKay Camp (South Fork Mountain); , near McKay Camp 1676 Comment
  UC162884  Silene campanulata subsp. glandulosa Harley P. Chandler June, 1901 1471 Humboldt Klamath River North Coast Ranges, Klamath River 426 Comment
  CHSC33021  Silene gallica James Payne Smith Jr. 1970-6-7 3804 Humboldt 0.6 miles north of Luffenholtz Beach along Calif. 1 near Trinidad. Comment
  HSC4189  Silene gallica Harvey Doerksen 1962-5-8 9 Humboldt 3 mi. W of Blue Lake, fork Mad River and Essex Creek Comment
  HSC102089  Silene grayi M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 992 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  JEPS51215  Silene grayi Joseph P. Tracy 1932-7-12 10477 Humboldt head of Brett Hole , head of Brett Hole (Trinity Summit) 1828 Comment
  UC1198359  Silene hookeri Joseph P. Tracy 1911-7-7 3414 Humboldt between Willow and Campbell Creeks (near the summit Brannan Mountain, viz. ridge n of Willow Creek); Northern Coast Ranges, Brannan Mountain, n of Willow Creek 1219 Comment
  CAS-BOT-BC181228  Silene hookeri subsp. bolanderi H. E. Parks; J. P. Tracy 1930-5-25 0791 Humboldt Laribee Valley 792 Comment
  HSC4170  Silene laciniata subsp. californica Paul Shields 1955-6-12 Humboldt 6 miles west of Meyers Flat Comment
  HSC68116  Silene laciniata subsp. californica J. P. Smith 1973-5-26 6819 Humboldt Scotia Bluffs along the Eel River near Rio Dell. Comment
  HSC45588  Sisyrinchium bellum Diane L. Reed 1978-5-27 142 Humboldt 0.3 mi. up Bair Rd. from Hwy. 299 Comment
  HSC23120  Sisyrinchium bellum Norman Dennis 1965-6-8 112 Humboldt 0.25 mi. S and 1 mi. E of junction of Barry Ridge Rd. and Eureka-Bridgeville county road, along Ashfield Ridge Rd., 5 mi. SE of Kneeland 793 Comment
  HSC26650  Sisyrinchium bellum Thomas W. Nelson 1971-5-9 433 Humboldt Beside Hwy. 36 opposite Goat Rock, 1 mi. W of Bridgeville Comment
  HSC13931  Sisyrinchium californicum J. F. Knezevich 1968-5-23 454 Humboldt N of Trinidad at Big Lagoon 0 Comment
  RSA21200  Sisyrinchium californicum Carl B. Wolf 1937-8-10 9088 Humboldt Big Lagoon, bog at state park. 6 Comment
  UC1197804  Smilacina racemosa Joseph P. Tracy 1936-8-7 15106 Humboldt 2 mi se Devil's Hole; Trinity Summit 1584 Comment
  UC666970  Smilacina stellata Joseph P. Tracy 1939-4-25 16222 Humboldt Bull Creek; mouth 60 Comment
  RSA46490  Solanum americanum Doris K. Kildale 1925-7-2 903 Humboldt Table Bluff. Comment
  HSC21297  Solanum aviculare Larry Berti 1968-10-13 Humboldt Comment
  HSC89586  Solanum aviculare M. Roantree 1985-5-24 57 Humboldt W side of Trinidad Head, along trail Comment
  CAS-BOT-BC83504  Solanum lycopersicum Henry M. Pollard 1948-7-21 s.n. Humboldt Orleans Comment
  BLMAR139  Solanum xanti Donald Hazlett 1994-6-7 139 Humboldt King range, near horse Mt. Ridge rd 670 Comment
  RSA20813  Solidago canadensis var. gilvocanescens C. B. Wolf 1937-9-9 9311 Humboldt North Coast Range, Wildcat Ridge, 6.3 miles south of Ferndale. 305 Comment
  UC34655  Solidago elongata Chestnut and Drew 1888-8-1 Humboldt Grouse Creek Comment
  CHSC13899  Solidago spathulata D. Joley 1967-8-17 65 Humboldt Found growing 10 mi NW of Fortuna. Comment
  HSC90397  Solidago spathulata Jean Hanson 1980-4-12 47 Humboldt Indian (Gunther) Island. W end of island between the point of meeting of the two dikes and the shore. Comment
  UC1409170  Solidago spathulata Robert F. Thorne and P. Everett 1965-8-5 35164 Humboldt Samoa Dunes 3 Comment
  HSC39803  Sonchus asper Peter Sorensen 1976-7-11 Humboldt King Salmon Comment
  HSC102588  Sorbus scopulina M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-29 1575 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1579 Comment
  UCSB25395  Sparganium emersum Keefe, Joseph 1967-7-8 Humboldt East side of U.S. Highway 101, turnoff to Crannell Road, north of Eureka 6 Comment
  HSC90259  Spergularia macrotheca Jean Hanson 1980-6-22 86 Humboldt Indian (Gunther) Island. In Humboldt Bay, city of Eureka. W end of Island. Comment
  CAS-BOT-BC390305  Spergularia macrotheca var. macrotheca A. A. Heller 1923-7-9 13780 Humboldt Flat between Eureka and Arcata Comment
  CAS-BOT-BC149615  Spiraea douglasii Henry M. Pollard 1947-8-19 s.n. Humboldt Klamath River nr. Redcap Creek, Orleans region Comment
  UC1199029  Spiraea douglasii Joseph P. Tracy 1924-7-13 6734 Humboldt Big Lagoon; Northern Coast Region 6 Comment
  HSC36653  Spiranthes romanzoffiana J. D. Ackerman 1975-8-2 618 Humboldt Hwy. 101 between Eureka and Arcata, along Humboldt Bay across from Murray Field. Comment
  HSC55064  Spiranthes romanzoffiana G. L. Clifton, Griswold 1979-7-31 11631 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1719 Comment
  UC535709  Stachys ajugoides var. rigida Eleanor Armstrong 1934-5-18 Humboldt Richardson Grove Comment
  UC577322  Stachys ajugoides var. rigida Joseph P. Tracy 1933-6-24 12611 Humboldt Big Lagoon 3 Comment
  UC577330  Stachys ajugoides var. rigida Joseph P. Tracy 1934-7-18 13455 Humboldt Grouse Mountain North Coast Ranges 1615 Comment
  UC668214  Stachys ajugoides var. rigida Joseph P. Tracy 1938-6-17 15969 Humboldt near Panther Gap (on road between Bull Creek to Mattole) 822 Comment
  UCLA71144  Stachys ajugoides var. rigida C. Epling 1938-6-10 Humboldt Blue Lake Comment
  UC1239725  Stachys ajugoides var. rigida Joseph P. Tracy 1943-7-11 17434 Humboldt Park's garden Trinidad 3 Comment
  UCLA70874  Stachys ajugoides var. rigida Joseph P. Tracy 1938-6-9 15874 Humboldt 2 mi s Blocksburg 304 Comment
  UC725501  Stachys chamissonis A. A. Heller 1923-7-9 13786 Humboldt between Eureka and Fortuna Comment
  BLMAR315  Stachys chamissonis Jennifer Anthony-Wheeler 2002-8-9 315 Humboldt Lost Coast Headland 121 Comment
  RSA32011  Stachys rigida subsp. quercetorum A. A. Heller 1937-6-11 s.n. Humboldt Along U.S. Highway 101 between Bishop Pine Lodge and Big Lagoon. Comment
  HSC58075  Stachys rigida var. rigida G. L. Clifton, Griswold 1979-8-1 11970 Humboldt Near Mill Creek Lakes, close to the town of Hoopa 1707 Comment
  RSA67572  Stellaria crispa P. A. Munz 1951-7-15 16550 Humboldt 5 miles N of Willow Creek 305 Comment
  HSC40302  Stellaria media Linda M. Barker 1976-4-30 1396 Humboldt 3 mi. W of Arcata Comment
  HSC4276  Stellaria media D. B. Bader 1963-2-17 32 Humboldt Second of the Clam Beach Lagoons W. of Hwy.101 Comment
  UC161055  Stellaria media Joseph P. Tracy 1907-5-20 2562 Humboldt Eureka; Northern Coast Region 0 Comment
  HSC76433  Stenanthium occidentale Denis Kearns 1981-7-23 434 Humboldt Near Whiteys Peak. 1524 Comment
  CAS-BOT-BC87612  Streptanthus tortuosus Joseph P. Tracy 1932-7-12 10457 Humboldt Klamath Mountains. Trinity Summit. Head of Brett Hole. 1828 Comment
  UC162599  Streptanthus tortuosus Harley P. Chandler June 1901 1441 Humboldt Klamath River North Coast Ranges 304 Comment
  UC162648  Streptanthus tortuosus var. orbiculatus Joseph Burtt Davy and Walter C. Blasdale 1899-6-19 5664 Humboldt Hoopa Mt. Comment
  UC302043  Streptanthus tortuosus var. orbiculatus Joseph P. Tracy 1926-5-15 7477 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  UC562304  Swertia radiata Joseph P. Tracy 1932-7-20 10731 Humboldt Corral Prairie Trinity Summit 1584 Comment
  CAS-BOT-BC269577  Symphoricarpos albus var. laevigatus H. E. McMinn 1922-8-5 349 Humboldt Along Van Duzen River Comment
  BLMAR248  Symphoricarpos mollis Jennifer Anthony-Wheeler 1997-7-24 248 Humboldt Lacks Creek, growing beneath conifer canopy 1219 Comment
  UC29837  Symphyotrichum chilense C. C. Marshall 1886-1-1 Humboldt Comment
  CAS-BOT-BC98975  Symphyotrichum foliaceum var. parryi Doris K. Kildale 1925-8-17 1216 Humboldt Trinity Summit near Ranger Station 1828 Comment
  JEPS35821  Symphyotrichum subspicatum Rimo Bacigalupi, and L. R. Heckard 1964-7-28 8966 Humboldt 9.5 mi n and w, s of Cape Mendocino Petrolia; Cape Mendocino Comment
  SEINET12275944  Symphytum asperum J. P. Tracy 1943-1 17448 Humboldt near Iverson dairy ranch, Arcata Comment
  HSC89432  Synthyris reniformis P. A. Daly 1984-5-8 11 Humboldt Trinidad Head 61 Comment
  JEPS9928  Synthyris reniformis Joseph P. Tracy 1926-2-28 7380 Humboldt East Fork of Willow Creek (Willow Creek Canyon); Northern Coast Ranges 457 Comment
  RSA183562  Synthyris reniformis D. E. Anderson 1965-4-24 3542 Humboldt About 0.5 mile from jct 299, along Titlow Hill Road. Comment
  CAS-BOT-BC221912  Taeniatherum caput-medusae David D. Keck 1948-7-2 6001 a Humboldt Ridge E. of Redwood Creek on road to Willow Creek, near Berry's Summit, US Route 299 Comment
  CAS-BOT-BC376723  Tanacetum bipinnatum M. Louise Hutchinson 1913-1-1 s.n. Humboldt Eureka Comment
  SBBG52996  Tanacetum camphoratum J. D. Hobson -Jul-1966 Humboldt Loleta Comment
  RSA167250  Taraxacum laevigatum Joseph P. Tracy 1951-6-24 19542 Humboldt Ashfield Ridge 762 Comment
Read comments
Aug 15 2009
  CHSC35576  Tauschia kelloggii Jacqueline Greenleaf 1980-5-23 90 Humboldt Near Dinsmores. 430 Comment
  RSA254744  Tauschia kelloggii Thomas W. Nelson, James Nelson 1973-5-28 956 Humboldt McKeown Ranch north of Dinsmore. Comment
  UC21435  Tauschia kelloggii C. C. Marshall Apr. 1888 Humboldt Comment
  CAS-BOT-BC85216  Taxus brevifolia Doris K. Kildale 1926-9-9 2685 Humboldt Little Van Duzen River on Bridgeville - Red Bluff Road 640 Comment
  RSA160832  Taxus brevifolia Joseph P. Tracy 1924-9-7 6862 Humboldt Grizzly Creek on Van Duzen River 91 Comment
  HSC20422  Tellima grandiflora D. A. Shally 1965-5-15 47 Humboldt Arcata, 1/4 mi. NE of HSC campus on Jolly Giant Creek Comment
  HSC20430  Tellima grandiflora D. E. Anderson 1962-3-31 1964 Humboldt Along new Hwy. 101, W side of Freshwater Lagoon Comment
  HSC45268  Tellima grandiflora M. Alcasas 1978-6-3 121 Humboldt Titlow Hill Rd. 0.8 mi. from Hwy. 299 1113 Comment
  JEPS49696  Tellima grandiflora Milo S. Baker 1923-7-20 Humboldt near South Yager Creek (Redwood House Road) Comment
  UC60906  Thermopsis gracilis unknown Humboldt Hoopa Valley Comment
  POM89157  Thuja plicata Joseph P. Tracy 1920-9-19 5401 Humboldt North fork of Mad River. 305 Comment
  RSA34287  Thuja plicata C. B. Wolf 1927-8-29 1192 Humboldt 7 miles south of Ferndale and Capetown, Bear River Ridge, Mt. Glen. Comment
  SBBG56418  Thuja plicata M. Van Rensselaer 1938-3-31 Humboldt Humboldt County [no specific locality] Comment
  UC1198257  Thuja plicata H. E. Parks and Joseph P. Tracy 1932-8-13 10346 Humboldt vicinity of Trinidad; Northern Coast Region 60 Comment
  SDSU9573  Tiarella Harvey 1938-8-13 2240 Humboldt Stephens Grove. Comment
  CAS-BOT-BC436912  Tiarella trifoliata var. unifoliata Carl B. Wolf 1927-8-21 765 Humboldt In Stephen's Grove Comment
  UC14482  Tolmiea diplomenziesii Chesnut and Drew 1888-7-9 Humboldt near Arcata Comment
  UC154107  Tolmiea diplomenziesii Joseph P. Tracy 1908-6 2876 Humboldt opposite Buck Mountain (Valley of Van Duzen River); Northern Coast Ranges 762 Comment
  CHSC24855  Tonella tenella A. D. Launer 1976-4-9 2 Humboldt On s bank of Conley Cr, 100 yds n of forks of Conley Cr, ca. 1.5 mi e of Church St. in Blocksburg. 487 Comment
  UC169326  Tonella tenella Joseph Burtt Davy and Walter C. Blasdale 1899-6-10 5388 Humboldt near Hubbard's Station; North Coast Ranges Comment
  HSC26806  Tonella tenella Thomas W. Nelson 1971-4-24 400 Humboldt Overlooking the E Fork of Willow Creek, S of Hwy. 299 Comment
  HSC21588  Torilis arvensis P. W. Shields May 1955 Humboldt HSC campus Comment
  HSC75412  Torilis arvensis J. O. Sawyer, M. A. Ericksen 1980-7-7 3574 Humboldt Slopes along Aikens Creek, Adroni Research Area 457 Comment
  UC183628  Torilis nodosa Joseph P. Tracy 1912-6-9 3683 Humboldt Alton 30 Comment
  HSC58686  Torreyochloa pallida var. pauciflora Overton 1979-8-1 12380 Humboldt Near Mill Creek, close to the town of Hoopa 1341 Comment
  JEPS63936  Toxicodendron diversilobum W. L. Jepson 1902-7-10 2000 Humboldt S. Fork Trinity R., Martin's Ranch Comment
  UC165853  Tracyina rostrata Joseph P. Tracy 1903-5-23 1892 Humboldt Alder Point Northern Coast Ranges 243 Comment
  CAS-BOT-BC377100  Tragopogon porrifolius Mrytle Paulson 1918-4-28 s.n. Humboldt Eureka Comment
  HSC43157  Trichostema lanceolatum R. Sutherland 1976-8-19 1 .19876 Humboldt 259 Comment
  HSC14453  Trichostema laxum D. E. Anderson 1963-10-6 2877 Humboldt Mad River bed, across from Essex Junction. Comment
  HSC81619  Trichostema laxum Thomas W. Nelson, Jane P. Nelson 1980-8-4 6231 Humboldt Above Alder Springs along old trail 1585 Comment
  RSA699238  Trichostema laxum J. R. Bruff 1937-8-17 930 Humboldt Richardson Grove, bed of Eel River. Comment
  RSA167428  Trichostema oblongum Joseph P. Tracy 1950-8-8 19284 Humboldt Croghan Hole, on Trinity Summit 1677 Comment
  HSC45615  Trientalis latifolia Diane L. Reed 1978-5-7 49 Humboldt Friday Ridge Road, near intersection with Hwy. 299 Comment
  UC16496  Trifolium albopurpureum var. dichotomum Joseph Burtt Davy and Walter C. Blasdale 1899-6-8 5342 Humboldt near Harris Comment
  UC180224  Trifolium albopurpureum var. dichotomum Joseph P. Tracy 1914-5-14 4452 Humboldt Fort Seward 121 Comment
  RSA168904  Trifolium bifidum var. decipiens Joseph P. Tracy 17427 Humboldt Trinity Highway, east of Redwood Creek, at Berrys. Comment
  RSA91561  Trifolium bifidum var. decipiens F. W. Peirson 1926-7-12 7031 Humboldt Redwood Creek, Orick. Comment
  UC1223500  Trifolium bifidum var. decipiens Joseph P. Tracy 1948-6-13 18027 Humboldt near Burr Creek (Larrabee Creek (Harris Trip)); Alder Point Comment
  UCD108809  Trifolium dichotomum Joseph P. Tracy 1933-5-20 12234 Humboldt Cape Mendocino. Mouth of Domingo Creek. South of point of the Cape. Comment
  HSC104458  Trifolium dubium Jeff Barrett, Keleigh Deitsch, Tessa Purdy 2014-4-13 11 Humboldt Samoa Peninsula, Fairhaven, along south side of Bay Street 5 Comment
  HSC45122  Trifolium dubium R. Sutherland 1978-5-12 1 .12578 Humboldt Mckee Flat 288 Comment
  UC33413  Trifolium eriocephalum var. eriocephalum W. C. Blasdale 1896-6-7 Humboldt Mad River Comment
  UC1223455  Trifolium fucatum Joseph P. Tracy 1950-6-8 18747 Humboldt 1 mi e Cape Mendocino; Cape Ridge 152 Comment
  POM20265  Trifolium fucatum var. fucatum L. R. Abrams 1916-7-11 6036 Humboldt North of Grizzly Creek on Van Duzon River. Comment
  UC16566  Trifolium hybridum Joseph Burtt Davy and Walter C. Blasdale 1899-6-17 5601 Humboldt Arcata Comment
  SDSU5282  Trifolium incarnatum D. F. Howe 1969-6-3 4623 Humboldt 13 miles north of Orick on # 101. Comment
  UC175675  Trifolium longipes subsp. hansenii Joseph P. Tracy 1913-6-17 4157 Humboldt Northern Coast Ranges. Buck Mountain, near summit. Comment
  JEPS80001  Trifolium macraei Joseph P. Tracy 1927-6-8 8114 Humboldt Trinidad; Northern Coast Region, Trinidad 15 Comment
  UC495661  Trifolium macraei Joseph P. Tracy 1932-5-10 9940 Humboldt 3 mi s point of cape (fronting the ocean); Northern Coast Ranges, Cape Mendocino 3 Comment
  UC494186  Trifolium microcephalum H. E. and S. T. Parks 1930-5-25 883 Humboldt Laribee Valley Comment
  HSC45140  Trifolium microcephalum R. Sutherland 1978-5-19 6 .19578 Humboldt Bridge over Redwood Creek at 'Shop Rd. 128 Comment
  UC1223355  Trifolium microcephalum Joseph P. Tracy 1939-4-29 16237 1/2 Humboldt mouth of Slate Creek (banks of Klamath River) Comment
  CHSC52933  Trifolium microdon L. P. Janeway 1984-5-16 786 Humboldt On the North Spit of Humboldt Bay; on the west side of Samoa Rd ca. 1/4 mile north of the boat ramp. 3 Comment
  UC1197547  Trifolium microdon Joseph P. Tracy 1925-8-9 7225 Humboldt near Miranda (Salmon Creek); Northern Coast Ranges 91 Comment
  POM214882  Trifolium obtusiflorum Joseph P. Tracy 1932-5-22 10119 Humboldt South fork of Eel River, between Miranda and Redway. Comment
  JEPS66013  Trifolium oliganthum Milo S. Baker 5560 Humboldt s Garberville Comment
  HSC38329  Trifolium repens Peter Sorensen 1976-5-29 Humboldt King Salmon Comment
  BLMAR745  Trifolium subterraneum Jennifer Wheeler 2015-5-18 745 Humboldt King range, strawberry rock grazing allotment down windy point 243 Comment
  HSC45130  Trifolium variegatum R. Sutherland 1978-6-1 2 .1678 Humboldt 282 Comment
  UC160946  Trifolium variegatum var. melananthum J. P. Tracy 1900-5-22 820 Humboldt Eureka vicinity 0 Comment
  JEPS4135  Trifolium variegatum var. variegatum Joseph P. Tracy 1929-5-5 8570 Humboldt Miranda Northern Coast Ranges, South Fork Eel River 121 Comment
  UC249716  Trifolium willdenovii Joseph P. Tracy 1921-5-30 5490 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  UC1197522  Trifolium willdenovii Joseph P. Tracy 1914-7-5 4557 Humboldt High Prairie Northern Coast Ranges, Bald Mtn 1066 Comment
  HSC37965  Triglochin concinna Peter Sorensen 1976-6-16 Humboldt Woodley Island, Humboldt Bay Comment
  RSA32656  Triglochin maritima Doris K. Kildale 1927-7-10 3740 Humboldt Big Lagoon Comment
  HSC14167  Triglochin maritima S. J. Moore 1965-5-8 15 Humboldt Marsh adjacent to Mad River Slough. Comment
  CHSC96700  Triglochin striata Gordon Leppig 1999-10-25 1267 Humboldt State Highway 101, mile marker 61.40. Ditch on east side of highway. UTM zone 10, 4519N, 406 E. 2 Comment
  HSC101809  Trillium albidum Kjirsten A. Wayman 2012-4-6 307 Humboldt Martin's Ferry Road, northwest of Weitchpec, near mile marker 32, east side of road 137 Comment
  UC146219  Trillium albidum Joseph P. Tracy 1905-4-2 2155 Humboldt region about Humboldt Bay near Arcata; Northern Coast Region, Humboldt Bay 0 Comment
  JEPS86159  Trillium chloropetalum Wayne Roderick 1966-5-5 Humboldt n. of Bridgeville 609 Comment
  HSC101799  Trillium kurabayashii Kjirsten A. Wayman 2011-6-14 284 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary, N 41.69527 deg. W 123.28321 deg. 1433 Comment
  HSC24377  Trillium ovatum J. O. Sawyer 1970-6-24 2278 Humboldt W of Mill Creek Lakes. 1677 Comment
  HSC48827  Trillium ovatum Brad Klipfel, J. P. Smith, J. O. Sawyer 1973-5-27 27 Humboldt Grogan's Hole near N Trinity Mtn. 1829 Comment
  CAS-BOT-BC133395  Trillium ovatum Doris K. Kildale 1926-3-25 1630 Humboldt Foot of Liscom Hill near Essex 30 Comment
  HSC34642  Trillium ovatum John Palmer 1975-4-9 296 Humboldt 40 yds. E of intersection of 17th at Bayview St., Arcata Comment
  HSC59657  Trillium ovatum Marla J. Carollo 1979-4-10 3 Humboldt Side of the logging trail behind dorms of HSU campus Comment
  HSC69786  Trillium ovatum R. Kalal 1979-5-5 37 Humboldt Fickle Hill Rd. 1.5 mi. E of 11th St. 183 Comment
  HSC98740  Trillium ovatum subsp. ovatum Cara Witte 2008-6-4 685 Humboldt Ammon Ridge Road. Approximately 1/2 mile east of intersection with National Forest 1. 1562 Comment
  CAS-BOT-BC521314  Trillium rivale Doris K. Kildale 1930-6-1 9739 Humboldt Klamath River at Bluff Creek 152 Comment
  HSC100892  Trillium sessile var. californicum Carl C. Marshall Apr 1886 122 Humboldt Thickets near bay. Comment
  JEPS26220  Triphysaria eriantha subsp. eriantha Joseph P. Tracy 1917-5-30 4805 Humboldt Little River Beach Northern Coast Ranges, Little River Beach (sand dunes) 6 Comment
  HSC40372  Triphysaria pusilla Linda M. Barker 1976-4-30 1425 Humboldt 3 mi. W of Arcata Comment
  UC180487  Trisetum canescens Joseph P. Tracy 1913-6-23 4283 Humboldt near summit of ridge between Van Duzen River and Mad River (on Dinsmore's Ranch); Northern Coast Ranges 1066 Comment
  UC552800  Trisetum canescens Joseph P. Tracy 1935-7-25 14235 Humboldt McKay Prairie; Trinity Summit 1584 Comment
  UCD93885  Trisetum canescens R. Tofsrud 1948-9-1 s.n. Humboldt Road between Horse Mt. and Grouse Mt. 1371 Comment
  HSC104044  Trisetum cernuum C. Reynolds 2015-4-25 38 Humboldt About 1 mi. from Redwood Creek Trailhead, off Bald Hills Road 26 Comment
  UCD93905  Trisetum cernuum A. H. Murphy 1951-5-15 37 Humboldt Toston Ranch, 3 miles west of Miranda. Comment
  RSA378030  Triteleia hyacinthina Hutchinson 1927-05 s.n. Humboldt [No locality information provided] Comment
  HSC35821  Triteleia laxa Thomas W. Nelson, Jane P. Nelson, James Nelson 1975-6-20 1918 Humboldt Above Goat Rock, 2 mi. W of Bridgeville Comment
  CAS-BOT-BC73930  Turritis glabra Alice Eastwood; John Thomas Howell 1937-6-23 4804 Humboldt Little Van Duzen River. Comment
  UC1130583  Typha latifolia H. S. Yates 1926-6-23 5866 Humboldt 2 mi nw Fortuna; Rohnerville Quad. Comment
  BLMAR141  Umbellularia californica Donald Hazlett 1994-6-7 141 Humboldt King range, near horse Mt. Ridge rd 670 Comment
  HSC14489  Umbellularia californica Francis Winter 1960-4-24 Humboldt 2 mi. NE of Redwood Creek Ranch 610 Comment
  HSC59799  Umbellularia californica Clark L. Miller 1979-5-24 8 Humboldt At 880 Central Ave. McKinleyville Comment
  RSA134171  Umbellularia californica P. C. Everett, E. K. Balls 1959-10-25 23958 Humboldt 12.4 mi W from Willow Creek along US Hwy 299 to Arcata. 655 Comment
  UCSB25251  Urtica dioica subsp. gracilis Tracy, Joseph 1927-3-6 Humboldt Elk River 30 Comment
  HSC21673  Urtica urens Wm. F. Bowman 1968-11-20 Humboldt 4 mi. SE of Arcata, along Jacoby Creek. Comment
  UC1197771  Vaccinium cespitosum J. P. Tracy 1906-4-22 2415 Humboldt immediate vicinity Eureka; , Ricks Prairie 0 Comment
  UC562349  Vaccinium cespitosum Joseph P. Tracy 1930-8-17 9161 Humboldt Big Lagoon Northern Coast Region 6 Comment
  UC22197  Vaccinium membranaceum J. Burtt Davy 1899-6-21 5759 Humboldt Trinity Summit North Coast Ranges 1524 Comment
  CHSC19510  Vaccinium ovatum P. F. Yull 1966-3-24 112 Humboldt South of Manila School. 120 yards from ocean. Comment
  HSC31334  Vaccinium ovatum Larry E. DeBuhr, G. D. Wallace 1972-5-22 615 Humboldt Del Norte Coast Redwood State Park, Damnation Trail Comment
  UCR178913  Vaccinium ovatum R. G. Swinney 1968-4-13 242 Humboldt North Coast, Lanphere's Preserve, west of Arcata 15 Comment
  CAS-BOT-BC199416  Vaccinium parvifolium C. Hart Merriam 1921-7-7 s.n. Humboldt Van Duzen River Bridge Comment
  HSC72827  Vaccinium parvifolium Gail Newton 1980-6-16 196 Humboldt Near Onion Mtn. 1280 Comment
  CAS-BOT-BC5073  Valeriana sitchensis subsp. scouleri Alice Eastwood; John Thomas Howell 1937-6-24 4868 Humboldt 5 miles E of Berry Summit Comment
  CAS-BOT-BC5074  Valeriana sitchensis subsp. scouleri Alice Eastwood; John Thomas Howell 1937-6-24 4868 Humboldt 5 miles E of Berry Summit Comment
  HSC56160  Valeriana sitchensis subsp. sitchensis G. L. Clifton, Griswold 1979-8-1 12035 Humboldt Near N Trinity Mtn., close to the town of Hoopa. 1798 Comment
  UC1239593  Valeriana sitchensis subsp. sitchensis Joseph P. Tracy 1937-7-29 15573 Humboldt in meadow at McKay Camp South Fork Mountain 1676 Comment
  UC602497  Valeriana sitchensis subsp. sitchensis Joseph P. Tracy 1930-7-17 8991 Humboldt meadow at McKay Camp South Fork Mountain 1676 Comment
  HSC98815  Vancouveria hexandra Cara Witte 2008-7-7 839 Humboldt National Forest Road 5N10. 2 miles south of intersection with Friday Ridge Road. Near waterhole sign. 1224 Comment
  UC1196345  Vancouveria hexandra Joseph P. Tracy 1937-7-24 15535 Humboldt Trinity Summit, head of Little Hors-Linto Creek Little Hors-Linto Creek; Trinity Summit, Little Hors-Linto Creek 1371 Comment
  UC302103  Vancouveria hexandra Joseph P. Tracy 1926-5-22 7513 Humboldt Prairie Creek Northern Coast Ranges, Prairie Creek 152 Comment
  HSC100399  Vancouveria hexandra Carl C. Marshall May 1886 53 Humboldt Woods. Comment
  RSA12551  Vancouveria hexandra C. B. Wolf 1934-7-2 5888 Humboldt Snow Camp. (Mountains east of Korbel). 1372 Comment
  UC527825  Vancouveria hexandra Ira L. Wiggins 1932-6-12 5865 Humboldt 2 mi e Bayside (bank of Jacoby Creek); bank of Jacoby Creek Comment
  HSC73140  Vancouveria planipetala M. A. Baker 1980-5-18 1294 Humboldt Near Black Mtn. 1006 Comment
  HSC76279  Vancouveria planipetala Teresa Prendusi 1981-7-7 123 Humboldt Near Slate Creek Butte. 1158 Comment
  JEPS33032  Vancouveria planipetala Lincoln Constance 1934-5-23 603 Humboldt s slope of mt. above Look Prairie Bull Creek area (Bull Creek area); , above Look Prairie 365 Comment
  UC1173640  Veratrum californicum var. californicum Joseph P. Tracy 1936-6-28 15011 Humboldt near Murphy Meadows; Bald Mountain 975 Comment
  HSC57040  Veratrum insolitum Overton, Butler 1979-7-24 9680 Humboldt Near Friday Camp, close to the town of Willow Creek. 1250 Comment
  HSC65843  Veratrum insolitum Gail Newton 1980-6-16 184 Humboldt Near Onion Mtn. 1280 Comment
  UC1173643  Veratrum viride Joseph P. Tracy 1934-8-29 13640 Humboldt near McKay Camp (South Fork Mountain); South Fork Mountain 1676 Comment
  HSC21738  Verbena lasiostachys D. E. Anderson 1963-5-25 2499 Humboldt 4 mi. E of Petrolia. Comment
  HSC61771  Verbena lasiostachys Ruby Van Deventer 1963-7-1 Humboldt Along the Klamath River at Pecwan. 137 Comment
  POM283821  Veronica americana Lyman D. Benson 1928-7-10 441 Humboldt Clam Beach, Trinidad. Comment
  SEINET3825239 Image available Veronica scutellata Malcolm A. Nobs, S. Galen Smith 1949-8-3 1190 Humboldt Southern outskirts of Eureka Comment
  HSC28231  Veronica scutellata John R. Keith 1973-5-15 Humboldt Abandoned log pond about 200 yds. E of junction of Guintoli Ln. and West End Rd. Comment
  UC1197462  Vicia americana var. americana Joseph P. Tracy 1933-6-24 12613 Humboldt Big Lagoon 91 Comment
  UC160967  Vicia americana var. americana Mrs. M. H. Manning May 1902 Humboldt Hupa Comment
  RSA20805  Vicia americana var. americana Carl B. Wolf 1937-8-13 9270 Humboldt North Coast Range, 12 miles E of Hoopa Valley on new road towards Trinity Summit. 1677 Comment
  JEPS29848  Vicia benghalensis Rimo Bacigalupi, and L. Heckard, J. Weiler 1961-6-23 7838 Humboldt about 1 mi w Carlotta (about 0.5 mi e of Hydesville) Comment
  HSC31808  Vicia sativa subsp. sativa Donald Spalinger 1974-4-25 22 Humboldt Forest across from 1756 Ridgewood Dr. 122 Comment
  HSC71614  Vicia tetrasperma J. P. Smith 1973-5-26 6832 Humboldt Scotia Bluffs along the Eel River near Rio Dell Comment
  HSC89577  Vicia tetrasperma K. Grenier, Leonel Arguello 1989-6-19 353 Humboldt Bald Hills Grasslands. At Stagecoach Stop. Comment
  HSC89689  Vicia villosa subsp. varia Robin Bencie, James Jones, Rich Dwerlkotte 1989-4-28 15 Humboldt Along Hwy. 299, near Korbel, 7.5 mi. E of Hwy. 101 122 Comment
  JEPS66199  Vicia villosa subsp. villosa Lincoln Constance 1934-6-25 932 Humboldt across road from Collin's Englewood Campground (Bull Creek Region, South Fork Eel River, on e side of road at Englewood); Bull Creek Region, South Fork Eel River, Englewood Comment
  CAS-BOT-BC263943  Viola adunca Mrs. H. C. Cantelow 1936-5-17 s.n. Humboldt 5.5 miles E of Orick Comment
  UC1198430  Viola adunca J. P. Tracy 1901-6-23 1168 Humboldt immediate vicinity of Eureka 0 Comment
  HSC85894  Viola cuneata Barry Silver 1986-4-13 512 Humboldt Bair Road, 6.4 mi. WSW of Hoopa Comment
  HSC41248  Viola glabella Brad Klipfel 1974-5-27 395 Humboldt Near Horse Mtn. Comment
  HSC44358  Viola glabella Brad Klipfel 1974-5-27 398 Humboldt Horse Mtn. Comment
  HSC48741  Viola glabella Brad Klipfel 1973-6-10 66 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  UC19284  Viola glabella Harley P. Chandler June, 1901 1285 Humboldt Hupa Indian Reservation; North Coast Ranges 1097 Comment
  UC1198459  Viola glabella Joseph P. Tracy 1913-4-13 44040 Humboldt about 4 mi e of Eureka (region about Humboldt Bay, along brach of Ryans Slough); Northern Coast Region, Ryans Slough Comment
  HSC97502  Viola hallii C. Witte 2007-5-8 3 Humboldt Cold Spring. 1/2 mile south of Titlow Hill. 1410 Comment
  HSC44774  Viola hallii Thomas W. Nelson, Jane Nelson 1977-6-19 3498 Humboldt Along the old trail above Alder Springs 1555 Comment
  HSC21823  Viola ocellata W. Lanphere 1937-4-20 Humboldt Hoopa Comment
  HSC38790  Viola praemorsa subsp. praemorsa J. P. Smith 1976-5-30 8823 Humboldt Near Black Rock on the road to Clear Lake 1524 Comment
  HSC39623  Viola purpurea subsp. purpurea Thomas W. Nelson, Jane P. Nelson 1976-6-15 2727 Humboldt Along old trail from lookout to Blocksburg 1585 Comment
  HSC38828  Viola sempervirens J. P. Smith, J. O. Sawyer 1973-5-12 6708 Humboldt 10.1 mi. from Hwy. 96 on Big Hill Rd. 1372 Comment
  HSC60298  Viola sempervirens Phyllis Krieg 1979-4-3 Humboldt Near USFS PSW Experimental Station Lab., Arcata Community Forest, Arcata 30 Comment
  HSC9839  Vulpia bromoides J. W. Johnson 1962-4-18 1266 Humboldt Along the lane below the W.M. Lanphere Home, Samoa Peninsula Comment
  RSA10149  Vulpia bromoides Joseph P. Tracy 1925-5-17 6980 Humboldt Trinity River Valley, near the South Fork. 183 Comment
  UC589843  Vulpia bromoides H. S. Yates 1936-6-18 5732 Humboldt Big Lagoon; Rocky Pt. Quad. 1 Comment
  UCD93442  Vulpia bromoides Linda M. Barker 1976-6-1 1543 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  HSC23096  Vulpia microstachys D. E. Anderson, J. P. Smith, J. O. Sawyer 1970-5-10 5056 Humboldt Along road from Redwood Creek to Hoopa, 1-3 mi. W of Hoopa Comment
  HSC32482  Vulpia microstachys Bonnie Prange 1974-5-18 Humboldt Off Hwy. 299 at China Slide. Comment
  UC187308  Vulpia microstachys var. microstachys Joseph P. Tracy 1902-6-3 1672 Humboldt near Fruitland Comment
  SEINET7295259 Image available Vulpia microstachys var. pauciflora Joseph P. Tracy 1942-1 17224 Humboldt Trinity Summit; Ridge top one mile west of Mud Springs 1158 Comment
  CAS-BOT-BC184161  Vulpia microstachys var. pauciflora L. S. Smith 1926-5-26 1837 Humboldt Tahoe National Forest. Last Chance Ridge Comment
  HSC71646  Vulpia myuros J. P. Smith, J. O. Sawyer, Jane Cole 1978-5-21 9930 Humboldt Ishi Pishi Rd., 2.5 mi. from its junction with Hwy. 96 in Orleans 213 Comment
  CAS-BOT-BC184732  Vulpia myuros subsp. megalura Doris K. Kildale 1929-5-26 9131 Humboldt Klamath River at Orleans 152 Comment
  UC38479  Vulpia myuros var. hirsuta Harley P. Chandler May 1901 1120 Humboldt Humboldt Bay; North Coast Ranges 30 Comment
  HSC20440  Whipplea modesta S. S. Stutz 1963-3-24 8 Humboldt 7 mi. SE of Arcata on Fickle Hill Rd. Comment
  HSC23142  Whipplea modesta Norman Dennis 1965-6-19 127 Humboldt 0.25 mi. S and 1.0 mi. E of jct. of Barry Ridge Rd. and Eureka-Bridgeville county rd., along Ashfield Ridge Rd., 2 mi. SE of Kneeland 793 Comment
  HSC70379  Whipplea modesta M. A. Baker 1980-6-7 1796 Humboldt Near Brush Mtn. 287 Comment
  HSC74568  Whipplea modesta M. A. Baker 1980-5-17 1274 Humboldt Near Le Perron Peak 1066 Comment
  UC1198903  Whipplea modesta Joseph P. Tracy 1942-5-16 17347 Humboldt 1 mi s Garberville (along river) 152 Comment
  POM161064  Woodwardia fimbriata Joseph P. Tracy 1926-11-7 7824 Humboldt North Coast Region; around Humboldt Bay: Table Bluff 152 Comment
  CAS-BOT-BC382926  Wyethia angustifolia Frank W. Gould 1939-5-29 841 Humboldt Horse Mountain 914 Comment
  UC169296  Wyethia angustifolia Joseph P. Tracy 1912-7-21 3755 Humboldt Alton Northern Coast Region, Alton 30 Comment
  UC582644  Wyethia angustifolia Joseph P. Tracy 1927-7-24 8295 Humboldt Upper Mattole Valley; Upper Mattole Valley 152 Comment
  UC176305  Wyethia angustifolia Joseph P. Tracy 1913-6-20 4226 Humboldt lower foothills nw slope Buck Mountain; Northern Coast Ranges, nw slope lower foothills Buck Mt 762 Comment
  UCD137002  Wyethia longicaulis Gordon Leppig 1998-6-1 872 Humboldt Horse Mountain. Buck Flat, Titlow Hill Rd. At Ammon Ridge Rd. 1524 Comment
  UC668191  Xanthium spinosum Joseph P. Tracy 1938-10-30 16174 Humboldt Holmes Flat 60 Comment
  HSC25958  Xanthium strumarium Thomas W. Nelson 1970-10-31 286 Humboldt Eel River near N end of the Scotia Bluff. Comment
  RSA12453  Xerophyllum tenax Carl B. Wolf 1934-6-30 5840 Humboldt Near summit of grade on road from Briceland to Shelter Cove; 6 miles from Shelter Cove 244 Comment
  HSC62873  Zeltnera davyi J. M. DiTomaso 1979-5-20 1045 Humboldt McKinleyville, middle divider on Hwy. 101 at Murray Rd. Comment
  HSC35862  Zeltnera muehlenbergii Thomas W. Nelson, James Nelson 1975-8-5 2133 Humboldt Along S spit of Humboldt Bay adjacent to jetty Comment
  HSC96224  Zigadenus micranthus Eric Schori, Kazuyuki Ishimaru 2005-6-3 1 Humboldt 19.3 mi. S of Hwy. 299 on NF1 1240 Comment
  HSC15747  Zigadenus micranthus D. E. Anderson 1965-5-15 3696 Humboldt 5 mi. N of Hoopa on Bald Hills Rd. 198 Comment
  RSA168946  Zigadenus micranthus Joseph P. Tracy 1950-6-25 18882 Humboldt Burr Valley. On NW slope of Buck Mtn. 1067 Comment
  UC275515  Zigadenus micranthus var. micranthus Joseph P. Tracy 1924-7-4 6521 Humboldt Valley South Yager Creek; Northern Coast Ranges, Valley South Yager Creek 762 Comment



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