Search Results — 2000 specimen records retrieved (1374 records with coordinates)
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Results for search: County=HUMBOLDT; Source=All;   

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

 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/cch_archive/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  HSC41313  Abies concolor Brad Klipfel 1974-9-2 543 Humboldt Horse Mountain Comment
  HSC70566  Abies concolor M. A. Baker 1980-7-23 3190 Humboldt Near Orleans Mtn. 1859 Comment
  UC1134161  Abies grandis G. T. Nordstrom 1937-7-1 1420 Humboldt 2.5 mi ne Orick; Orick Quad. 152 Comment
  BLMAR72  Abronia latifolia Jennifer Anthony-Wheeler 1994-5-18 72 Humboldt Samoa/manilla dunes, growing throughout dunes 6 Comment
  HSC23109  Abronia latifolia Norman Dennis 1965-6-8 106 Humboldt Samoa Peninsula along the W side of Humboldt Bay Comment
  HSC59741  Abronia latifolia Clark L. Miller 1979-5-9 6117 Humboldt Samoa Dunes W of Samoa Blvd. Comment
  CAS-BOT-BC383849  Abronia latifolia Doris K. Kildale 1926-6-18 2406 Humboldt Golf Bluffs Comment
  RSA0025080  Abronia latifolia Joseph P. Tracy 1901-8-7 1271 Humboldt Sand Hills of Ocean Beach at Samoa, opp. Eureka Comment
  CAS-BOT-BC436984  Acaena novae-zelandiae D. W. Cooper 1966-10-10 s.n. Humboldt On ridge just southeast of Forest Service Nursery, ca. 2 miles southeast of Crannell and ca. 4 miles east of U.S. Highway 101 Comment
  HSC100371  Acaena novae-zelandiae J. McRae 2010-6-18 Humboldt McKinleyville, USFS Humboldt Nursery. Comment
  CAS-BOT-BC330548  Acer circinatum H. E. McMinn 1922-8-5 355 Humboldt Near Van Duzen River Comment
  SEINET3026058 Image available Acer circinatum Joseph P. Tracy 1942-7-26 17294 .5 Humboldt Valley of SOuth Yager Creek 610 Comment
Read comments
May 1 2015
  UC165822  Acer macrophyllum Joseph P. Tracy 1911-7-9 3461 Humboldt along Willow Creek Northern Coast Ranges, Trib of Trinity River, Willow Cr ((Tributary of Trinity River), near its mouth) 152 Comment
  UC452623  Acer macrophyllum P. E. Goddard 1901-7 47 Humboldt Hupa Valley Hupa Valley (Mendocino and Humboldt Counties) Comment
  UC718416  Acer macrophyllum Wolf and Johnson 1934-10-11 6756 Humboldt Redwood Highway 6 4/10 mi w Humboldt Redwood Park (Eel River); w of Humboldt Redwood Park, Eel River 91 Comment
  CHSC33061  Achillea millefolium James P. Smith 1973-5-26 6797 Humboldt Scotia Bluffs along the Eel River near Rio Dell, California. Railroad right-of-way. Comment
  HSC58099  Achillea millefolium G. L. Clifton, Griswold 1979-8-1 12027 Humboldt Near N Trinity Mtn., close to the town of Hoopa 1799 Comment
  UCSB15405  Achillea millefolium 1962-6-7 Humboldt 1.5 miles south of Samoa on peninsula on western side of Humboldt Bay Comment
  CAS-BOT-BC28582  Achillea millefolium J. Clausen 1939-6-23 1728 Humboldt On the Bull Creek Road near intersection with Redwood Highway at Dyerville Comment
  HSC4547  Achillea millefolium H. E. Parks, S. T. Parks Aug 1943 24246 Humboldt Egg Point, Trinidad 122 Comment
  HSC46013  Achillea millefolium Catherine Chin 1978-8-16 106 Humboldt Arcata; at 7th and A St. Comment
  HSC3335  Achlys triphylla H. E. Parks, S. T. Parks May 1930 752 Humboldt Along Van Duzen River Comment
  HSC3340  Achlys triphylla Lincoln Constance 1934-6-1 773 Humboldt S Fork Eel River, Bull Creek Rd. between Dyerville Bridge and Bull Creek Flat Grove. 46 Comment
  JEPS52978  Achlys triphylla subsp. triphylla W. L. Jepson 1932-7-29 16446 Humboldt Van Duzen R., Grizzly Flat Comment
  UCD50691  Achnatherum lemmonii A. H. Murphy 1951-6-25 74 Humboldt About 1 mile W of Board Camp Mtn. Ca. 16 miles NE of Bridgeville. Comment
  UC1222924  Achyrachaena mollis Joseph P. Tracy 1950-6-15 18811 Humboldt n 7 mi at Jenk's Ranch Harris; Mail Ridge Comment
  SBBG67348  Acmispon americanus R. Hartwell 1938-8-3 98 Humboldt near Weott Comment
  HSC98308  Acmispon micranthus D. B. Bader 1963-3-1 22 Humboldt Second of the Clam Beach Lagoons, W of Hwy. 101 Comment
  HSC44755  Acmispon micranthus Maralyn O'Meara 1972-6-8 84 Humboldt Along Bald Hills Rd, 16.4 mi. E of junction with Hwy. 101 Comment
  HSC71610  Acmispon micranthus J. P. Smith, Steve Selva 1970-6-14 3845 Humboldt Along Hwy. 96 at Whitmore Creek 152 Comment
  CAS-BOT-BC391411  Aconitum columbianum subsp. columbianum Joseph P. Tracy 1937-8-12 15661 Humboldt Snow Camp 1402 Comment
  HSC56210  Aconitum columbianum subsp. viviparum G. L. Clifton, Griswold 1979-8-2 12215 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  POM312840  Acorus calamus Malcolm A. Nobs, S. Galen Smith 1949-8-9 1242 Humboldt Marshy pond on south side of the town of Blue Lake. Comment
  CAS-BOT-BC391593  Actaea spicata var. arguta Doris K. Kildale 1926-8-15 2501 Humboldt Willow Creek Canyon 769 Comment
  HSC37338  Adenocaulon bicolor Gary S. Lester, Roger L. Yearout, Judith G. Dickson 1974-7-24 486 Humboldt Along Lost Man Creek. 38 Comment
  UC1199430  Adenocaulon bicolor Joseph P. Tracy 1912-7-27 3880 Humboldt Kneeland Prairie; Northern Coast Ranges, Kneeland Prairie 762 Comment
  HSC98889  Adenocaulon bicolor Cara Witte 2007-6-21 326 Humboldt Board Camp Mountain. Forest Service Road 4N38. 1430 Comment
  UC62718  Adiantum aleuticum W. C. Blasdale 1896-6-1 Humboldt Freshwater Comment
  HSC98752  Adiantum aleuticum Cara Witte 2007-7-12 514 Humboldt Forest Service Road 5N10. 2 miles east of intersection with National Forest 1. 1339 Comment
  UC275411  Adiantum aleuticum Joseph P. Tracy 1925-11-25 7324 Humboldt near s fork Trinity River Valley; Northern Coast Ranges 182 Comment
  UCD137172  Adiantum aleuticum K. Esau 1934-5-8 s.n. Humboldt Redwood Highway, So. of Scotia. Comment
  CAS-BOT-BC202607  Aesculus californica Doris K. Kildale 1927-5-15 3161 Humboldt Petrolia Comment
  SD62068  Agoseris apargioides var. maritima Darley F. Howe 1965-8-7 4121 Humboldt Orick. Comment
  UC1222930  Agoseris grandiflora var. leptophylla Joseph P. Tracy 1950-7-31 19225 Humboldt 1 mi s, along roadside Friday's Camp; Grouse Mountain 1524 Comment
  UC1222933  Agoseris grandiflora var. leptophylla Joseph P. Tracy 1950-7-31 19224 Humboldt below Friday's Camp; Grouse Mountain 1524 Comment
  HSC39005  Agoseris heterophylla Thomas W. Nelson, Jane P. Nelson 1976-5-31 2649 Humboldt N of junction of FS Rds. 1S07 and 5E27 along 5E27 1524 Comment
  HSC74276  Agoseris heterophylla M. A. Baker 1980-5-23 1390 Humboldt Near Buck Mtn. 1524 Comment
  RSA167315  Agoseris heterophylla Joseph P. Tracy 1950-7-6 19006 Humboldt On the Albee Road 2 miles south of Burr Valley 1159 Comment
  UC667047  Agrimonia gryposepala Joseph P. Tracy 1940-6-16 16571 Humboldt opposite mouth Willow Creek (Lack Pond); Trinity River Valley 152 Comment
  UCR136660  Agrostis alba H. M. Pollard 1948-7-21 s.n. Humboldt Klamath River banks near Orleans 122 Comment
  CAS-BOT-BC127286  Agrostis exarata W. R. Dudley 1899-1-1 s.n. Humboldt Arcata. Comment
  UC1145059  Agrostis exarata Joseph P. Tracy 1936-8-7 15084 Humboldt head of, near Grizzly Camp Little Hors-Linto Creek; Trinity Summit 1371 Comment
  UC526892  Agrostis exarata Joseph P. Tracy 1932-7-14 10550 Humboldt Wet Meadow at Corral Prairie Klamath Mountains, Trinity Summit 1524 Comment
  UC556417  Agrostis exarata Palmer Stockwell 1934-7-13 64 Humboldt Clam Beach Comment
  UC726371  Agrostis exarata A. A. Heller 1923-7-8 13772 Humboldt near Fortuna Comment
  UCSB51224  Agrostis exarata Almanza, Ed 1976-7-15 Humboldt Big Lagoon Campground, Big Lagoon Comment
  CAS-BOT-BC139696  Agrostis gigantea Henry M. Pollard 1945-8-24 s.n. Humboldt Between Orleans and Camp Creek. Klamath River. Comment
  SEINET10810391  Agrostis longiligula Joseph P. Tracy 1902-7-4 Tracy 1757 Humboldt 0 Comment
  UC526877  Agrostis oregonensis Joseph P. Tracy 1930-7-23 9129 Humboldt along streamlet Northern Coast Ranges, Horse Mountain 1524 Comment
  UC526878  Agrostis oregonensis Joseph P. Tracy 1924-7-4 6711 Humboldt in boggy meadow Northern Coast Ranges, Snow Camp 1371 Comment
  HSC102189  Agrostis pallens M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-4 1103 Humboldt Andy's Camp 1564 Comment
  HSC58792  Agrostis thurberiana Overton, Butler 1979-7-31 11457 Humboldt Near Water Dog Lakes, close to the town of Hoopa 1830 Comment
  CAS-BOT-BC445358  Alisma plantago-aquatica Henry M. Pollard 1948-7-26 s.n. Humboldt Near mouth of Camp Creek near Orleans Comment
  HSC23145  Allium amplectens Norman Dennis 1965-6-19 132 Humboldt 0.25 mi S and 1.0 mi. E of junction of Barry Ridge Rd. and Eureka-Bridgeville county rd., along Ashfield Ridge Rd., 5 mi. SE of Kneeland 793 Comment
  SEINET199675  Allium amplectens J. P. Tracy 1936-6-17 14975 a Humboldt Little Van Duzen River at hwy crossing 0 Comment
  UC666887  Allium amplectens Joseph P. Tracy 1936-6-17 14975 Humboldt Little Van Duzen River at highway crossin Little Van Duzen River 713 Comment
  UC666928  Allium bolanderi Joseph P. Tracy 1932-6-14 10139 Humboldt mountain slopes w mouth of South Fork of Trinity River; South Fork of Trinity River 609 Comment
  HSC100546  Allium campanulatum Carl C. Marshall Jun 1886 304 Humboldt Trail E of Hoopa. Comment
  UC666927  Allium campanulatum Joseph P. Tracy 1933-7-25 12863 Humboldt Grouse Mountain 1524 Comment
  RSA47172  Allium campanulatum Doris K. Kildale 1927-7-22 3815 Humboldt Lasseck s Peaks Comment
  HSC102617  Allium cratericola M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-28 1604 Humboldt Slopes above Bret Hole and below trail 6E18, 1.5 km SSW of Trinity Summit. 1778 Comment
  UC1198200  Allium falcifolium Joseph P. Tracy 1933-7-25 12892 Humboldt Grouse Mountain 1524 Comment
  CAS-BOT-BC135846  Allium hoffmanii Thomas W. Nelson; James L. Nelson 1980-6-10 5417 Humboldt Along road to Red Mountain 0.5 miles west of junction with Swayback Ridge Road - Six Rivers National Forest 1371 Comment
  CHSC33162  Allium hoffmanii Marc Baker 1980-7-11 2799 Humboldt Near Red Mountain. 226 mm from the left and 235 mm from the bottom on the quad map. 225 Comment
  HSC71823  Allium hoffmanii Thomas W. Nelson, Jane P. Nelson 1980-6-27 5955 Humboldt Ridge S of Mt. Lassic (Signal Peak) 1524 Comment
  JEPS81076  Allium hoffmanii Thomas W. Nelson and Jane P. Nelson 1980-6-27 5951 Humboldt saddle between two peak e Mount Lassic (non-numbered section e of Sec. 36); Six Rivers National Forest, Blocksburg Quad. 1767 Comment
  SEINET5586421  Allium triquetrum Richard R. Halse 2013-1 8768 Humboldt Along U.S. Hwy 101 ca. 1.0 miles west of Orick 4 Comment
  HSC23259  Allium triquetrum Jena Kattenhorn 1971-5-26 259 Humboldt Vacant lots of HSC campus Comment
  HSC58103  Allium validum G. L. Clifton, Griswold 1979-8-1 12034 Humboldt Near N Trinity Mtn., close to the town of Hoopa 1799 Comment
  JEPS58643  Alnus incana subsp. tenuifolia W. L. Jepson 1902-7-17 2058 Humboldt Trinity Summit 2133 Comment
  CAS-BOT-BC170949  Alnus rhombifolia Lyman Benson 1929-7-19 1878 Humboldt Mouth of Matole [Mattole] River Comment
  UC275561  Alnus rhombifolia Joseph P. Tracy 1923-10-14 6575 Humboldt North Dobbyn Creek Northern Coast Ranges 152 Comment
  UC1197956  Alnus rhombifolia Joseph P. Tracy 1926-1-10 7347 Humboldt Along Yager Creek, Carlotta Comment
  CAS-BOT-BC169547  Alnus rubra Joseph P. Tracy 1930-11-16 9255 Humboldt Alton, along Van Duzen River 30 Comment
  POM106497  Alnus rubra Marcus E. Jones 1924-4-26 s.n. Humboldt Eureka. Comment
  SBBG89139  Alnus rubra A. Keedy 1988-9-28 15 Humboldt Alder Grove Rd near Hwy 299, N of Arcata Comment
  SEINET12031409  Alnus rubra F. H. Utech, Sato, T.; Ohara, M. 1990-1 90 -301 Humboldt Six Rivers National Forest, 0.5 mi S of CA 199 on French Hill Road (USFS Road 411) 150 Comment
  UC54760  Alnus viridis subsp. sinuata Joseph Burtt Davy and Walter C. Blasdale 1899-5 5778 Humboldt Trinity Summit North Coast Ranges (Mendocino, Humboldt, and Del Norte Counties) Comment
  UC1103312  Alopecurus geniculatus Joseph P. Tracy 1933-7-20 12802 Humboldt Arcata <Bottom> North Coast Ranges, Arcata <Bottom> 15 Comment
  CAS-BOT-BC13703  Ambrosia chamissonis Ira L. Wiggins 1930-7-7 4674 Humboldt Near Samoa Comment
  CDA9965  Ambrosia chamissonis T. C. Fuller 1958-6-17 1905 Humboldt Zanone Ranch, Cape Mendocino. 0 Comment
  UC582624  Ambrosia chamissonis Joseph P. Tracy 1934-10-21 13687 Humboldt s end Stone Lagoon 3 Comment
  RSA264507  Ambrosia chamissonis var. chamissonis H. E. Parks 1941-09 24214 Humboldt Mouth of Little River Comment
  HSC33176  Amelanchier alnifolia var. semiintegrifolia Thomas W. Nelson 1974-4-20 1183 Humboldt Near Elk Head N of Trinidad Comment
  HSC96268  Amelanchier alnifolia var. semiintegrifolia J. Breton, A. Livingston 2005-6-10 7 Humboldt Coldspring Camp, 7.4 mi. S of Hwy. 299 on NF1 1357 Comment
  CDA1717  Ammophila arenaria T. C. Fuller 1961-9-28 7062 Humboldt 0.2 miles south of Samoa. 0 Comment
  RSA296725  Ammophila arenaria J. P. Smith, Thomas W. Nelson 1977-6-30 9201 Humboldt Samoa Peninsula just east of the drag strip. Comment
  RSA86667  Ammophila arenaria F. W. Peirson 1941-7-29 13112 Humboldt Little River Beach State Park. Comment
  UC1239646  Amsinckia lunaris Joseph P. Tracy 1930-5-25 8724 Humboldt near Bridgeville; Northern Coast Ranges 152 Comment
  HSC32503  Anagallis arvensis David Johnson 1974-5-2 73 Humboldt Mad River Co. Park, mouth of the Mad River; by the parking lot Comment
  HSC49064  Anaphalis margaritacea Patricia Shesgreen 1978-8-2 125 Humboldt Arcata Community Forest, Arcata; 200 yds. N of field house on top of hill overlooking baseball field Comment
  UC582520  Anaphalis margaritacea Joseph P. Tracy 1934-8-31 13649 Humboldt Kneeland Prairie 762 Comment
  UCR48597  Anaphalis margaritacea R. D. Goeden, Don W. Ricker 1987-9-2 7 A Humboldt Loleta, along Cannibal Road 8 Comment
  CAS-BOT-BC45142  Anaphalis margaritacea Annie M. Alexander; Louise Kellogg 1948-9-3 5572 Humboldt Trinity and Klamath Rivers Comment
  RSA21448  Anaphalis margaritacea C. B. Wolf 1937-8-13 9212 Humboldt North Coast Range, 9 miles NE of Blue Lake on Lord Ellis Road. 244 Comment
  SD42332  Anaphalis margaritacea Carl B. Wolf 1937-8-13 2910 Humboldt North Coast Range, 9 miles northeast of Blue Lake on Lord Ellis Road. 245 Comment
  HSC44526  Anemone deltoidea Brad Klipfel 1973-7-1 134 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  UC1196198  Anemone deltoidea Joseph P. Tracy 1947-7-5 17809 Humboldt near Box Camp; Trinity Summit 1524 Comment
  CAS-BOT-BC391772  Anemone deltoidea M. Louise Hutchinson 1913-5-1 s.n. Humboldt Near Eureka Comment
  HSC98600  Anemone deltoidea Cara Witte 2008-6-15 736 Humboldt Along National Forest 1. 3 miles north from intersection with Forest Service Road 6N01B. 1456 Comment
  POM365632  Anemone deltoidea Unspecified s.n. Humboldt [No location data on label] Comment
  UC160913  Anemone deltoidea J. P. Tracy 1906-5-20 2467 Humboldt vicinity of Eureka (near Cutten and MacDonald Tract) 0 Comment
  HSC33062  Anemone oregana var. oregana Thomas W. Nelson, Jane Cole, Brad Klipfel 1974-5-8 1250 Humboldt Horse Mtn. area, W of microwave tower 1220 Comment
  HSC55623  Angelica arguta Overton, Butler 1979-7-24 9570 Humboldt Near Titlow Hill, close to the town of Willow Creek 1097 Comment
  UC585998  Angelica genuflexa Joseph P. Tracy 1927-9-25 8380 Humboldt 2 mi s of Fields Landing (around Humboldt Bay, at Still Ranch); Northern Coast Region, Still Ranch 6 Comment
  UCD127227  Angelica hendersonii Joseph DiTomaso 1980-6-29 1634 Humboldt north side of Elkshead. 2 miles north of Trinidad. Comment
  HSC8638  Angelica lucida D. E. Anderson 1966-10-29 4347 Humboldt Along E side of Humboldt Bay, 1 mi. S of Arcata. Comment
  HSC101671  Angelica tomentosa Cara Witte 2008-8-6 999 Humboldt Board Camp Mountain; 1 mile south of Forest Service Road 4N38 and National Forest 1 intersection. 1416 Comment
  HSC71978  Angelica tomentosa J. M. DiTomaso 1980-8-4 1834 Humboldt Hwy 299, 5 mi W of Willow Creek at 34.4 mi mark 671 Comment
  HSC99069  Angelica tomentosa Cara Witte 2008-8-16 1027 Humboldt Ammon Ridge Road. Approximately 1/4 mile east of intersection with National Forest 1. 1548 Comment
  HSC41291  Antennaria suffrutescens Brad Klipfel 1974-7-27 489 Humboldt Horse Mtn. Comment
  HSC8947  Anthoxanthum odoratum T. L. Ackerman 1964-4-12 34 Humboldt One mi. up a logging road N from an elementary school near Freshwater Corners Comment
  SBBG53003  Anthoxanthum odoratum R. N. Philbrick, J. R. Haller 1976-6-25 1 Humboldt Capetown-Ferndale Rd, NW of Cape Mendocino, ca. 4 mi NW of Bear River at Capetown 457 Comment
  UC526831  Anthoxanthum odoratum Joseph P. Tracy 1925-7-5 7164 Humboldt High Prairie on Bald Mountain; Northern Coast Ranges, 1066 Comment
Read comments
Jul 18 2012
  UCD56641  Anthoxanthum odoratum G. Douglas Barbe; T. C. Fuller 1974-6-17 1848 Humboldt North Coast Rages, Eureka, at 707 'L' Street, behind CSAA (California State Automobile Assoc.) district office. Comment
  UC1400213  Apium graveolens Gary S. Lester 1973-12-2 60 Humboldt in the city of Arcata Arcata Comment
  HSC98059  Apocynum androsaemifolium Cara Witte 2007-7-11 498 Humboldt Grouse Mountain Lookout. Forest Service Road 4N70. 1641 Comment
  SD51267  Apocynum androsaemifolium Darley F. Howe 1961-8-2 3117 Humboldt 23.5 miles east of Orick on Bald Mountain Road 915 Comment
  UC176867  Apocynum cannabinum Joseph P. Tracy 1912-7-26 3838 Humboldt Kneeland Prairie North Coast Ranges, Kneeland Prairie 762 Comment
  HSC56245  Aquilegia formosa var. truncata Walter Overton 1979-8-1 12348 Humboldt Near Packsaddle Ridge, close to the town of Hoopa 1341 Comment
  HSC75495  Arabis holboellii var. retrofracta J. O. Sawyer 1980-7-18 3637 Humboldt North Trinity Mountain Research Natural Area, north of Mill Creek Lake to Red Cap Hole. Comment
  HSC100458  Arabis perfoliata Carl C. Marshall Jun 1887 403 Humboldt Harris. Comment
  RSA171939  Aralia californica R. F. Thorne 1957-9-2 19010 -a Humboldt Eel River. Burlington State Park, just S of Weott. Comment
  HSC99399  Arbutus menziesii K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-6-28 48 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  POM118486  Arbutus menziesii Marcus E. Jones 1924-4-25 s.n. Humboldt Garberville Comment
  UC1225903  Arctostaphylos X candidissima Joseph P. Tracy 1947-7-9 17861 Humboldt Horse Mountain 1432 Comment
  JEPS38977  Arctostaphylos canescens Joseph P. Tracy 1935-7-14 14064 Humboldt Horse Mountain 1432 Comment
  CAS-BOT-BC25210  Arctostaphylos canescens subsp. canescens J. P. Tracy 1941-4-8 16850 Humboldt Willow Creek Canyon, along Trinity Highway Comment
  HSC98604  Arctostaphylos canescens subsp. sonomensis Cara Witte 2008-6-4 676 Humboldt Horse Mountain Botanical Area. Forest Service Road 6N38. Near Horse Mountain mine. 1307 Comment
  CAS-BOT-BC23777  Arctostaphylos columbiana J. P. Tracy 1909-3-7 2944 Humboldt Immediate vicinity of Eureka 152 Comment
  JEPS38965  Arctostaphylos columbiana Joseph P. Tracy 1934-2-22 13141 Humboldt vicinity of Trinidad Northern Coast Region 60 Comment
  UC249506  Arctostaphylos columbiana Joseph P. Tracy 1922-4-30 6044 Humboldt ridge w Green Point; Northern Coast Ranges, Bald Mountain 609 Comment
  SEINET11998372  Arctostaphylos columbiana W. Knight, Knight, I. 1989-1 6476 Humboldt Patrick's Point State Park 24 Comment
  UCD50873  Arctostaphylos glandulosa Roman Gankin 1965-8-5 545 Humboldt 6.5 miles west on Kings Mountain Road, Pacific Range Wilderness Area. Comment
  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
  UC1052839  Arctostaphylos glandulosa subsp. glandulosa W. L. Colwell 1955-6-7 26 Humboldt one half mi n Grasshopper Mountain lookout (three mi w of Weott); Quad. 29-B-3 914 Comment
  CAS-BOT-BC39162  Arctostaphylos hispidula Carl B. Wolf 1937-8-13 9226 Humboldt North Coast Range, 8 Mi. E. of Hoopa Valley on new road towards Trinity Summit. 1219 Comment
  UCD52868  Arctostaphylos knightii Roman Gankin; W. R. Hildreth 1967-10-26 1180 Humboldt 23.2 miles from Hwy. 101 on Bald Hills Road from Orick. Comment
  HSC100468  Arctostaphylos manzanita Carl C. Marshall Apr 1886 397 Humboldt Hoopa Valley. Comment
  HSC7657  Arctostaphylos nevadensis J. Pursell 1964-10-17 101714 Humboldt Road to Box Camp in Hoopa Valley 1372 Comment
  UC1173710  Arctostaphylos nevadensis Joseph P. Tracy 1939-8-16 16405 Humboldt Horse Mountain 1432 Comment
  CAS-BOT-BC46634  Arctostaphylos patula Henry M. Pollard 1946-8-28 s.n. Humboldt Orleans Mt., near summit. 1828 Comment
  HSC98995  Arctostaphylos patula Cara Witte 2008-7-10 865 Humboldt Forest Service Road 4N06A. Cow Creek Ridge. 1 mile east of National Forest 1. Under powerlines. 1254 Comment
  RSA70889  Arctostaphylos uva-ursi R. S. Woglum 1938-8-29 12639 Humboldt North Coast: Samoa; Samoa Peninsula separating Humboldt Bay from the Pacific Ocean. . 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
  SEINET11987353  Arctostaphylos uva-ursi var. coactilis W. Knight, Knight, I. 1981-1 4047 Humboldt Tilden Botanic Garden, Berkeley, orig. from Samoa Comment
  UC1173713  Arctostaphylos viscida subsp. viscida Joseph P. Tracy 1939-4-29 16264 Humboldt Orleans 121 Comment
  UC160986  Arenaria serpyllifolia subsp. serpyllifolia Harley P. Chandler June 1901 1433 Humboldt North Coast Ranges, Klamath River 304 Comment
  HSC69625  Armeria maritima subsp. californica R. Kalal 1979-5-29 34 Humboldt Along Samoa Blvd. 3 Comment
  UC154174  Armeria maritima subsp. californica Harley P. Chandler May, 1901 1153 Humboldt Humboldt Bay North Coast Ranges 3 Comment
  CAS-BOT-BC82102  Arnica cernua Joseph P. Tracy 1938-6-13 15902 Humboldt Horse Mountain 1432 Comment
  HSC38495  Arnica cernua D. E. Anderson, J. P. Smith 1971-6-18 - 1088 Humboldt Horse Mtn. Comment
  SEINET11837502  Arnica cordifolia H. P. Chandler 1901-1 1400 Humboldt Klamath River 244 Comment
  HSC99480  Arnica discoidea K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-14 139 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), between Six Rivers National Forest boundary and Box Camp. 1433 Comment
  RSA12448  Arnica discoidea C. B. Wolf 1934-7-1 5845 Humboldt 2.7 mi from Briceland on rd. to Shelter Cove. 91 Comment
  UC1057744  Arrhenatherum elatius W. L. Colwell 1957-7-6 42 Humboldt 6 mi nw of Bridgeville (Redwood House Ranch, Quadrangle 26C3); Redwood House Ranch 685 Comment
  HSC4719  Artemisia douglasiana Paul Shields 1955-9-29 Humboldt 1/2 mi. S of Fernbridge Comment
  UC1222998  Artemisia douglasiana Joseph P. Tracy 1947-8-24 17892 Humboldt Meadow at Box Camp; Trinity Summit 1463 Comment
  SEINET201067  Artemisia dracunculus Joseph P. Tracy 1916-9-5 Humboldt Humboldt County: South fork of eel river 4 miles above the mouth. Comment
  JEPS36984  Artemisia dracunculus W. L. Jepson 1936-8-12 17877 Humboldt second terrace of the river South Fork Eel River, Philipsville Comment
  UC164826  Artemisia pycnocephala J. P. Tracy 1909-7-18 3023 Humboldt opp. Eureka (sand hills of ocean beach); Samoa Comment
  SEINET190493  Artemisia suksdorfii H. E. Parks May 1940 24178 Humboldt Little River Comment
  SDSU6205  Artemisia suksdorfii D. F. Howe 1963-7-8 3620 Humboldt 2.5 miles west of Bridgeville on #36. 152 Comment
  UC1199378  Artemisia suksdorfii Joseph P. Tracy 1939-5-28 16309 Humboldt coast bluffs s Centerville 60 Comment
  HSC34272  Aruncus dioicus var. acuminatus K. Irwin 1975-8-13 Humboldt Grogans Hole Comment
  HSC55680  Aruncus dioicus var. acuminatus Overton, Butler 1979-7-26 9933 Humboldt Near Willow Creek, E Fork, close to the town of Willow Creek. 1326 Comment
  UC1103506  Asarum caudatum Joseph P. Tracy 1949-6-6 18304 Humboldt Happy Camp Mountain (in Trinity Summit Range, northeast of Hawkins Bar) 1280 Comment
  UC672846  Asarum caudatum Joseph P. Tracy 1935-7-23 14160 Humboldt Trinity Summit, lower end of Brett Hole 1584 Comment
  HSC62996  Asarum caudatum David Wheeler 1979-5-9 100 Humboldt Humboldt State University campus, 1/4 mi. E of the dorms along Jolly Giant Creek Comment
  UC677691  Asarum caudatum C. C. and S. K. Harris 1936-6-14 652 Humboldt Yager Road from Carlotta 457 Comment
  UC154170  Asclepias cordifolia Harley P. Chandler June, 1901 1347 Humboldt Hupa Indian Reservation North Coast Ranges 152 Comment
  POM127914  Asclepias speciosa P. E. Goddard 1906-06 688 Humboldt Blocksburg Comment
  UC1222242  Asclepias speciosa Joseph P. Tracy 1950-8-20 19321 Humboldt 8 mi below Orleans (at Big Bar, Klamath River near Slate Creek); Klamath River, Big Bar 121 Comment
  UC23011  Asclepias speciosa J. Burtt Davy 1899-6-24 5866 Humboldt Hoopa Valley, along the river North Coast Ranges Comment
  UCD137278  Aspidotis densa Gordon Leppig 1998-7-1 861 Humboldt Ammon Ridge Rd., 1 k east of Titlow Hill Rd. 1432 Comment
  UCSB29324  Aspidotis densa Phelps, M. 1972-3-22 Humboldt Abundant on Cedar Flat, Elk Ridge 762 Comment
  RSA134590  Aster chilensis Percy C. Everett, E. K. Balls 1959-10-25 23960 Humboldt 14 miles W of Willow Creek on Hwy 299 to Arcata. 503 Comment
  CAS-BOT-BC200854  Astragalus umbraticus D. E. Anderson 1965-5-15 3694 Humboldt About 7 miles north of Hoopa on Bloody Camp Prairie road Comment
  SBBG69571  Asyneuma prenanthoides S. W. Hutchinson -Jun-1925 93 Humboldt Redwood Hwy 243 Comment
  CAS-BOT-BC69520  Athyrium filix-femina subsp. cyclosorum L. R. Abrams 1916-7-11 6053 Humboldt At mouth of Grizzly Creek on Van Duzon River. Comment
  HSC44050  Athyrium filix-femina var. cyclosorum Thomas W. Nelson, Jane Nelson 1977-6-19 3493 Humboldt Above Alder Springs, N of pond 1585 Comment
  HSC69756  Atriplex prostrata Thomas W. Nelson 1977-9-22 3751 Humboldt Along E side of State Rte. 101, N of Eureka airport Comment
  HSC97550  Atriplex prostrata Ivy Watson 2008-10-11 56 Humboldt Mad river, near river mouth, S bank 6 Comment
  UCD56455  Avena fatua Kathleen Moore 1964-7-14 s.n. Humboldt Kneeland. 1/2 mile north of Star Barn. Comment
  HSC69755  Baccharis douglasii Thomas W. Nelson 1977-9-22 3752 Humboldt At turnoff to Arcata Redwood Co. Comment
  CAS-BOT-BC99405  Baccharis pilularis Joseph P. Tracy 1923-10-6 6565 Humboldt Eureka, around Humboldt Bay 30 Comment
  UC249855  Baccharis pilularis Joseph P. Tracy 1923-10-6 6565 Humboldt Eureka, around Humboldt Bay Eureka, Humboldt Bay 30 Comment
  UC249856  Baccharis pilularis Joseph P. Tracy 1923-10-6 6565 Humboldt Eureka Humboldt Bay 30 Comment
  HSC68262  Baccharis pilularis subsp. consanguinea J. P. Smith 1971-10-6 4963 Humboldt End of Murray Rd. in McKinleyville. Comment
  CAS-BOT-BC106354  Bellis perennis W. R. Dudley 1899-1-1 s.n. Humboldt Arcata Comment
  CHSC284  Bellis perennis M. Underhill 1952-7-13 Humboldt 1 Comment
  HSC39790  Bellis perennis Peter Sorensen 1976-6-16 Humboldt Woodley Island Comment
  UCD129543  Bellis perennis Joseph M. DiTomaso 1976-3-28 343 Humboldt Arcata, corner of 3rd and D. Comment
  HSC35711  Berberis aquifolium Thomas W. Nelson 1975-10-12 2238 Humboldt McKeown Ranch, N of Dinsmore Comment
  UC1198387  Berberis aquifolium Joseph P. Tracy 1940-8-25 16711 Humboldt High Prairie Bald Mt 1066 Comment
  UC552297  Berberis aquifolium Joseph P. Tracy 1934-7-6 13660 Humboldt at crossing of the Kneeland Rd Lawrence Creek 457 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
  CAS-BOT-BC412989  Bistorta bistortoides Volney Rattan 1882-1-1 s.n. Humboldt Kneeland Comment
  POM118334  Blechnum spicant Marcus E. Jones 1924-4-26 s.n. Humboldt Eureka. Comment
  SD112347  Blechnum spicant Darley F. Howe 1961-8-1 3109 Humboldt Three mi. N of Arcata on Hwy. 101. Comment
  UC399399  Blechnum spicant Chesnut and Drew 1888-7-8 26 Humboldt near Arcata Comment
  CAS-BOT-BC15801  Boechera acutina Joseph Prince Tracy 1932-7-11 10396 Humboldt Klamath Mountains. Trinity Summit. At Corral Prairie. 1524 Comment
  UC552303  Boechera subpinnatifida Joseph P. Tracy 1933-7-25 12878 Humboldt Grouse Mountain North Coast Ranges 1524 Comment
  HSC74415  Boykinia major Gail Newton 1980-8-10 2036 Humboldt Near Blake Mtn. 1707 Comment
  HSC37396  Boykinia occidentalis Gary S. Lester, Roger L. Yearout, Judith G. Dickson 1974-7-24 510 Humboldt Along Lost Man Creek. 38 Comment
  JEPS49652  Boykinia occidentalis Harley P. Chandler June, 1901 1501 Humboldt Klamath River; North Coast Ranges, Klamath River 426 Comment
  UC420420  Boykinia occidentalis Mrs. M. H. Manning 1901-4 55 Humboldt near Hupa; near Hupa Comment
  HSC8596  Brassica rapa John A. Dubois 1962-5-23 30 Humboldt 15 mi. E of Arcata Comment
  CAS-BOT-BC106295  Brickellia californica S. K. Harris; Mrs. C. M. Wilder 1938-9-8 877 Humboldt Bars on Van Duzen River, below Blue Slide Comment
  RSA695640  Brickellia californica J. Russell Bruff 1937-8-17 932 Humboldt Richardson Grove, bed of Eel River. Comment
  UC581795  Brickellia californica Joseph P. Tracy 1931-10-18 9736 Humboldt Camp Grant, along Eel River, 2-5 mi e of the South Fork Eel River 45 Comment
  UC581796  Brickellia californica Joseph P. Tracy 1934-9-30 13681 Humboldt Bridgeville 198 Comment
  HSC9084  Briza maxima Dennis Anderson 1965-5-8 3626 Humboldt 1 mi. E of Blue Lake on Hwy. 299 Comment
  UC657696  Briza maxima P. B. Kennedy 1929-6-13 Humboldt Etterberg Comment
  UCD57367  Briza maxima R. N. Raynor 1935-5-22 s.n. Humboldt Fort Seward. Comment
  CAS-BOT-BC145570  Briza minor Doris K. Kildale 1925-6-28 916 Humboldt Fleener Creek. Comment
  SBBG21833  Brodiaea elegans subsp. elegans D. Myrick 1964-7-26 975 Humboldt Hwy 299 ca. 15 mi E of Arcata 762 Comment
  UC1197745  Brodiaea elegans subsp. elegans Joseph P. Tracy 1912-6-9 3691 Humboldt Alton Northern Coast Region 30 Comment
  CAS-BOT-BC484218  Brodiaea elegans subsp. elegans Henry M. Pollard 1948-7-17 s.n. Humboldt Banks of Klamath River, Orleans Comment
  SEINET200765  Brodiaea stellaris Joseph P. Tracy 1923-7-4 6526 Humboldt Valley of South Yager Creek 762 Comment
  CAS-BOT-BC486529  Brodiaea stellaris H. D. Ripley; R. C. Barneby 1954-5-18 11569 Humboldt 3 miles e of Bridgeville Comment
  SEINET247908  Brodiaea terrestris subsp. terrestris Joseph P. Tracy 1927-6-8 8111 Humboldt Trinidad. Comment
  SEINET7297864 Image available Bromus breviaristatus Joseph P. Tracy 1950-1 18786 Humboldt Mail Ridge; North of Harris 2 miles 1036 Comment
  SEINET4345214  Bromus carinatus J. B. Davy 1899-6-11 5408 Humboldt Summit above Hubbard Station Comment
  UC37586  Bromus carinatus var. carinatus Joseph Burtt Davy 1899-6-8 5351 Humboldt near Bell's Springs Comment
  HSC37936  Bromus diandrus Peter Sorensen 1976-6-4 Humboldt N Spit Comment
  HSC9287  Bromus diandrus R. D. Modafferi 1965-5-9 52 Humboldt 0.2 mi. N of Trinidad on Trinity St. 305 Comment
  HSC9244  Bromus hordeaceus E. W. Styskel 1964-4-26 71 Humboldt End of Davis St. at edge of Eel River in Rio Dell. Comment
  UC34106  Bromus hordeaceus Joseph Burtt Davy and Walter C. Blasdale 1899-6-8 5349 a Humboldt Bells Spring; North-Western California, Bells Spring Comment
  HSC70478  Bromus laevipes Gail Newton 1980-7-20 1634 Humboldt Near Bell Swamps 1426 Comment
  HSC97099  Bromus sterilis Yun Chan, Renee Meyer, Sophary Yun 2007-6-11 5 Humboldt 14.1 mi. S of Hwy. 299 on FS Rd. NF1 1364 Comment
  UC1103349  Bromus sterilis Joseph P. Tracy 1950-7-6 18985 Humboldt Buck Mountain, Burr Valley Burr Valley; Buck Mountain, Burr Valley 1066 Comment
  HSC97182  Bromus tectorum Benjamin Hart, Erin Lonergan 2007-6-11 5 Humboldt 14.1 mi. S of Hwy. 299 on FS Rd. NF1 1524 Comment
  UC1103268  Bromus vulgaris Joseph P. Tracy 1912-7-25 3817 Humboldt Northern Coast Ranges, Kneeland Prairie Kneeland Prairie; Northern Coast Ranges, Kneeland Prairie 762 Comment
  UC179918  Bromus vulgaris Joseph P. Tracy 1912-7-27 3884 Humboldt Northern Coast Ranges, Kneeland Prairie Kneeland Prairie; Northern Coast Ranges, Kneeland Prairie 762 Comment
  CAS-BOT-BC36864  Cakile edentula var. edentula Malcom A. Nobs; Stanley Galen [S. Galen] Smith 1949-8-11 1337 Humboldt At easten shore of Stone Lagoon. Comment
  RSA10021  Calamagrostis koelerioides Joseph P. Tracy 1933-8-30 13008 Humboldt Horse Mountain. In open Forest of Jeferey Pine 1372 Comment
  UCD57741  Calamagrostis rubescens Joseph P. Tracy 1938-7-17 16082 Humboldt Garberville. 152 Comment
  HSC12858  Callitropsis nootkatensis M. Athey, D. La Conte 1970-11-28 4 Humboldt HSU campus Comment
  OBI33734  Calocedrus decurrens David J. Keil 1983-7-2 17316 Humboldt Ca. 4 mi SE of SR 299 along Titlow HIll rd below Horse Mtn Summit Rd Comment
  UC1005668  Calocedrus decurrens Frank W. Gould 1939-5-30 827 Humboldt about 25 mi due e of Eureka (top of Horse Mountain); Horse Mountain 365 Comment
  UC1197682  Calochortus coeruleus Joseph P. Tracy 1932-7-15 10582 Humboldt e of Corral Prairie; Trinity Summit 1828 Comment
  CAS-BOT-BC488620  Calochortus elegans var. nanus Doris Kildale Gillespie 1931-6-7 10586 Humboldt South Fork Mt., Blake Lookout 1726 Comment
  HSC100550  Calochortus maweanus Carl C. Marshall May 1885 129 Humboldt Open ground in 'the hills'. Comment
  HSC15332  Calochortus tolmiei W. K. Parks Jul 1933 1194 Humboldt S Fork Mtn. Comment
  UC1197674  Calochortus tolmiei Joseph P. Tracy 1930-7-6 8839 Humboldt Kneeland Prairie 762 Comment
  UC1197684  Calochortus tolmiei Joseph P. Tracy 1930-6-8 8727 Humboldt Kneeland Prairie 762 Comment
  UC14999  Calochortus tolmiei Mrs. M. H. Manning Apr 1901 10 Humboldt near Hupa Comment
  CAS-BOT-BC494355  Calochortus tolmiei Doris K. Kildale 1927-5-13 3248 Humboldt Redwood creek at Berngs' 289 Comment
  RSA168945  Calochortus vestae Joseph P. Tracy 1950-6-23 18868 Humboldt Dobbyn Creek, 3 miles northeast of Alderpoint. 213 Comment
  UC180238  Caltha biflora Joseph P. Tracy 1914-7-4 4525 Humboldt High Prairie on Bald Mountain; Northern Coast Ranges. 1066 Comment
  UC1222961  Calycadenia fremontii Joseph P. Tracy 1948-9-20 18220 Humboldt Hoopa Valley 91 Comment
  CAS-BOT-BC273310  Calycadenia fremontii G. D. Carr 1974-9-12 785 Humboldt 2.1 mi W of Hwy 299 on Friday Ridge Rd, ca. 3.5 mi WSW of Salyer 458 Comment
  UC205227  Calycadenia fremontii Joseph P. Tracy 1919-9-13 5188 Humboldt near Mouth of Willow Creek; Valley of Trinity River, Northern Coast Ranges 152 Comment
  RSA54132  Calycadenia truncata subsp. scabrella H. M. Pollard 1946-8-31 s.n. Humboldt Orleans to Somes Bar Comment
  BLMAR74  Calypso bulbosa Jennifer Anthony-Wheeler 1994-6-2 74 Humboldt IAQUA 1036 Comment
  SEINET12076826  Calypso bulbosa Unknown 1977-1 Humboldt Comment
  JEPS98261  Calystegia silvatica subsp. disjuncta Gordon Leppig 2001-7-11 1579 Humboldt W shoulder of south G street, about 75 m S of the City of Arcata Corporation Yard entrance Arcata Comment
  CDA39891  Calystegia silvatica subsp. disjuncta Gordon Leppig 2001-7-8 1577 Humboldt Northern California - North Coast Region; Arcata, at the intersection of 11th and B Streets. 0 Comment
  HSC44614  Calystegia soldanella Laura Witherspoon 1977-5-25 Humboldt Manila Comment
  HSC6363  Calystegia soldanella J. W. Johnson 1962-6-4 1413 Humboldt Arcata, W.M. Lanphere Farm, Samoa peninsula Comment
  CHSC20349  Calystegia soldanella D. E. Anderson; N. Dennis 1965-6-8 1036 Humboldt Samoa Peninsula along the west side of Humboldt Bay. Sections 3, 4, 9, 10, 15, 16, 17, 20, 21, 28, 29, 31, 32. Comment
  RSA152326  Camassia quamash subsp. breviflora Joseph P. Tracy 1947-5-3 17686 Humboldt Kneeland Prairie 762 Comment
  HSC39613  Camassia quamash subsp. linearis Thomas W. Nelson, Jane P. Nelson 1976-6-15 2717 Humboldt Along old trail from lookout to Blocksburg 1585 Comment
  HSC66287  Camassia quamash subsp. linearis M. A. Baker 1980-6-8 1878 Humboldt Near Buck Flat. 1554 Comment
  CHSC40211  Camassia quamash subsp. quamash L. P. Janeway 1984-5-13 778 Humboldt Along the Kneeland/Bridgeville Road ca 19 mi east of the Kneeland post office and 1 mi south of N Fk Yager Creek. 640 Comment
  HSC16540  Camissonia cheiranthifolia Paul Shields 1955-9-17 Humboldt 1/2 mi. S of mouth of Mad River Comment
  HSC26985  Camissonia cheiranthifolia Brad Klipfel 264 Humboldt Samoa Comment
  HSC62912  Camissonia cheiranthifolia J. M. DiTomaso 1979-4-22 912 Humboldt Big Lagoon, 8 mi. N of Trinidad Comment
  RSA456172  Campanula prenanthoides Anstruther Davidson 1918-07 3350 Humboldt Eel River. Comment
  CDA42339  Campanula prenanthoides T. C. Fuller 1962-8-6 9350 Humboldt Highway 299 to Blue Lake, 4.8 miles west of Willow Creek. 0 Comment
  SEINET10462970  Campanula prenanthoides Sandborg 1968-7-19 SANDBORG 54 Humboldt Bluff Creek near Notice Creek, forest floor near road below Notice Creek bridge. T10N R4E Comment
  SEINET10462986  Campanula prenanthoides Ira L. Wiggins 1930-7-22 Wiggins 4690 Humboldt Along bank of Redwood Creek between Blue Lake and Willow Creek Comment
  UC602533  Campanula prenanthoides Joseph P. Tracy 1933-7-26 12927 Humboldt Grouse Creek Basin 762 Comment
  HSC99576  Campanula scouleri K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-8-10 241 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
  RSA12439  Campanula scouleri C. B. Wolf 1934-7-2 5854 Humboldt 2 miles from Bald Mt. on road to Korbel. Comment
  RSA46687  Campanula scouleri Doris K. Kildale 1937-7-18 15143 Humboldt Horse Mt. Comment
  HSC6623  Capsella bursa-pastoris Francis Winter 1960-3-26 Humboldt Samoa Peninsula, 2 mi. N of Coast Guard Station Comment
  CAS-BOT-BC37420  Cardamine californica LeRoy Ellsworth Detling 1935-4-21 1645 Humboldt Summit of Bear Creek Ridge, Cape Mendocino. Comment
  CAS-BOT-BC37429  Cardamine californica Parks; Tracy 1931-3-26 0916 Humboldt Lower Van Duzen River. 60 Comment
  CAS-BOT-BC37437  Cardamine californica A. A. Heller 1937-6-8 15896 Humboldt 3 miles north of Trinidad. Bishop Pine Lodge. Comment
  HSC57307  Cardamine californica Terry Griswold, Marvin Butler 1979-7-10 6250 Humboldt Near Board Camp Mtn., close to the town of Willow Creek 1495 Comment
  LA204275  Cardamine californica Victor Duran; 1933-5-11 3405 Humboldt Van Duzen River, near Bridgeville Comment
  UC1199189  Cardamine californica Joseph P. Tracy 1905-4-2 2160 Humboldt near Blue Lake; Northern Coast Ranges, near Blue Lake 30 Comment
  UCD114184  Cardamine californica Joseph M. DiTomaso 1976-3-28 358 Humboldt just east of summit on Highway 299, 8 miles west of Willow Creek. 762 Comment
  UC1199194  Cardamine nuttallii Joseph P. Tracy 1933-6-11 12665 Humboldt Horse Mountain Northern Coast Ranges, Horse Mountain 1371 Comment
  CAS-BOT-BC37895  Cardamine oligosperma Duart V. Brown 1942-5-11 2871 Humboldt Three miles east of East Fork of Willow Creek. Comment
  HSC6640  Cardamine oligosperma John A. Dubois 1962-5-12 4 Humboldt 20 mi. E of Arcata Comment
  HSC43205  Cardamine oligosperma R. Sutherland 1976-8-13 29 .13876 Humboldt Mouth of Redwood Creek at S Fork of Eel River 87 Comment
  HSC6649  Cardamine oligosperma W. F. Nickel 1965-3-13 Humboldt 10 mi. W of Prairie Creek State Park, 0.25 mi. S of Fern Canyon on road to Fern Canyon Comment
  UC668108  Cardionema ramosissimum Joseph P. Tracy 1933-8-22 12993 Humboldt mouth of Eel R. 3 Comment
  HSC5226  Carduus tenuiflorus D. E. Anderson 1963-5-25 2487 Humboldt 1 mi. N of Capetown Comment
  CAS-BOT-BC17794  Carex amplifolia Joseph Prince Tracy 1935-6-23 13986 Humboldt French Camp Ridge. 1066 Comment
  HSC76400  Carex aquatilis var. dives L. P. Janeway 1982-8-7 118 Humboldt Dry Lagoon, middle of lagoon 3 Comment
  UC562629  Carex athrostachya Joseph P. Tracy 1935-7-23 14140 Humboldt Trinity summit, Corral Prairie Comment
  CAS-BOT-BC19434  Carex bolanderi Henry M. Pollard 1948-8-4 s.n. Humboldt Orleans Mountain Trail. 1371 Comment
  HSC43238  Carex bolanderi R. Sutherland 1977-4-5 5477 Humboldt 386 Comment
  RSA126089  Carex buxbaumii Joseph P. Tracy 1924-7-13 6724 Humboldt Big Lagoon 6 Comment
  UC1115804  Carex canescens Joseph P. Tracy 1939-7-9 16318 Humboldt at Lake Prairie Bald Mountain, Lake Prairie 1066 Comment
  UC562723  Carex concinnoides Joseph P. Tracy 1927-4-23 7911 Humboldt Patrick's Point Northern Coast Ranges, Patrick's Point 60 Comment
  JEPS26003  Carex cusickii Joseph P. Tracy 1938-7-6 16023 Humboldt Big Lagoon 6 Comment
  JEPS26000  Carex densa Joseph P. Tracy 1936-6-3 14848 Humboldt Trinity River Valley, at Willow Creek 152 Comment
  UC585641  Carex deweyana subsp. leptopoda J. P. Tracy 1937-6-20 15353 Humboldt Bear River, 10 mi up stream from the mouth 152 Comment
  UC249759  Carex echinata subsp. phyllomanica Joseph P. Tracy with H. E. Parks 1924-8-3 6773 Humboldt Big Lagoon Northern Coast Region 6 Comment
  JEPS63725  Carex feta Joseph P. Tracy 1916-6-20 4734 Humboldt Dyke Ranch Northern Coast Ranges, Alder Point, Dyke Ranch 304 Comment
  HSC40977  Carex fracta J. O. Sawyer 1970-6-24 2217 Humboldt Ridge on Big Hill Rd., E of Hoopa 1189 Comment
  HSC98786  Carex fracta Cara Witte 2007-7-11 489 Humboldt Waterhole off Forest Service Road 5N10. Approximately 2 miles east of intersection with National Forest 1. 1346 Comment
  CAS-BOT-BC20873  Carex globosa Joseph Prince Tracy 1929-6-3 8605 Humboldt North Coast Ranges. Willow Creek Canyon. Mouth of East Fork. 487 Comment
  UC1103061  Carex globosa Joseph P. Tracy 1939-4-25 16224 Humboldt mouth of creek Bull Creek 60 Comment
  UC303145  Carex globosa Joseph P. Tracy 1925-6-7 7064 Humboldt East Fork of Willow Creek Northern Coast Ranges, Willow Creek Canyon 457 Comment
  CAS-BOT-BC146596  Carex gynodynama Joseph P. Tracy 1936-6-21 14991 Humboldt Iaqua 609 Comment
  HSC96578  Carex gynodynama Gordon Leppig, Todd Treadwell 2005-6-8 2249 Humboldt Blue Slide Creek watershed, Pacific Lumber Co. land. 245 Comment
  UC197484  Carex gynodynama Joseph P. Tracy and Ernest B. Babcock 1912-5-11 3603 Humboldt Northern Coast Ranges, Hydesville. Comment
  UC2020226  Carex gynodynama Joseph P. Tracy 1906-6-24 2508 Humboldt Northern Coast Region, south slope of Humboldt Hill. Comment
  SEINET7561242 Image available Carex harfordii Andrew L. Hipp 1999-6-2 483 Humboldt Orick, Redwood National Park, Bald Hill Road, 16.7 mi from 101. 503 Comment
  UC1103098  Carex harfordii Joseph P. Tracy 1935-6-8 13939 Humboldt at Eureka Northern Coast Ranges 0 Comment
  JEPS25966  Carex harfordii Joseph P. Tracy 1927-7-17 8279 Humboldt Three Cabins: grassy slopes on lower western foothills of Chaparral Mountain 457 Comment
  CAS-BOT-BC21752  Carex hassei Joseph Prince Tracy 1927-6-17 8170 Humboldt Big Lagoon. 6 Comment
  HSC70164  Carex hendersonii Thomas W. Nelson, Jane P. Nelson 1978-6-10 4416 Humboldt Behind the Seventh-Day Adventist Church on F St. 61 Comment
  POM292662  Carex hendersonii Victor Duran 1933-5-12 3412 Humboldt Bull Creek, at South Fork of the Eel River Comment
  HSC103622  Carex hoodii Thomas W. Nelson, Jane Nelson 1987-6-11 8536 Humboldt Along Forest Service Rd. 13N01, 18 mi. from junction with State Route 96. 1067 Comment
  CHSC90279  Carex jonesii Thomas W. Nelson; Jane P. Nelson 1987-6-11 8599 Humboldt North Coast Ranges. Box Spring at Box Camp. Along trail to North Trinity Mountain. 1524 Comment
  HSC102230  Carex jonesii M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-3 1151 Humboldt Patterson Meadows 1555 Comment
  CAS-BOT-BC31264  Carex lenticularis var. impressa Joseph Prince Tracy 1932-7-14 10554 Humboldt Trinity Summit, Corral Prairie, in wet meadow. 1584 Comment
  RSA246648  Carex lenticularis var. limnophila Robert F. Thorne 1965-9-19 35461 Humboldt Freshwater Lagoon S of Orick. 3 Comment
  CAS-BOT-BC21121  Carex leptalea Joseph Prince Tracy 1918-7-21 5086 Humboldt Northern Coast Range. Humboldt Hill. 91 Comment
  HSC102224  Carex leptopoda M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-4 1143 Humboldt Patterson Meadows 1555 Comment
  HSC48375  Carex leptopoda D. H. Norris May 1970 12457 Humboldt Top of ridge above Freshwater Lagoon Comment
  HSC102233  Carex luzulina M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-3 1155 Humboldt Patterson Meadows 1555 Comment
  CAS-BOT-BC31583  Carex luzulina var. luzulina Joseph Prince Tracy 1942-6-28 17269 Humboldt In bog at Murphy Meadows, Bald Mountain. 975 Comment
  UC562321  Carex lyngbyei Joseph P. Tracy 1935-6-8 13945 Humboldt around Humboldt Bay; Northern Coast Region 6 Comment
  JEPS116608  Carex mariposana Barbara Wilson, Richard Brainerd, Susan Erwin, Christine Jordan and Mike Friend 2003-6-20 10950 Humboldt Sundew Meadow on South Fork Mountain, on Shasta-Trinity Forest road 1661 Comment
  UC204898  Carex mendocinensis Joseph P. Tracy 1911-7-6 3343 Humboldt Northern Costa Ranges. Mountains slopes along road between Three Creeks and mouth of Willow Creek. Comment
  UC562261  Carex multicaulis Joseph P. Tracy 1935-6-23 13996 Humboldt French Camp Ridge Northern Coast Ranges 1066 Comment
  CAS-BOT-BC119544  Carex nudata L. P. Janeway 1983-7-23 437 Humboldt Hoopa quad. Along the W side Klamath River at Aikens Creek. 91 Comment
  CHSC34063  Carex nudata Joseph P. Tracy 1911-6-4 3220 Humboldt Northern Coast Region. Along Little River, 5 miles from the coast. 121 Comment
  CAS-BOT-BC119389  Carex obnupta T. G. W. s.n. Humboldt Arcata Comment
  CHSC10107  Carex obnupta J. W. Johnson 1961-8-17 1055 Humboldt Hollow 10, W.M. Lanphere Farm, Samoa Peninsula. Comment
  CHSC2106  Carex obnupta M. Anthony 1937-5-15 Humboldt Humboldt State College. Comment
  UC8071  Carex obnupta Harley P. Chandler May, 1901 1122 Humboldt Humboldt Bay North Coast Ranges 30 Comment
  UC1041076  Carex obnupta J. W. Congdon 1904-7-23 Humboldt Peninsula Eureka Eureka Comment
  HSC65948  Carex ovalis M. A. Baker 1980-7-19 2991 Humboldt Near Bret Hole. 1814 Comment
  UC562553  Carex ovalis Joseph P. Tracy 1936-6-28 15012 Humboldt near Murphy Meadow; Bald Mt. 914 Comment
  UC585634  Carex ovalis Joseph P. Tracy 1937-8-7 15617 Humboldt Murphy Ridge Bald Mt. 914 Comment
  CHSC107145  Carex pachycarpa R. E. Brainerd 2009-7-23 1570 Humboldt Coast Range, South Fork Mountain; headwaters of Kerlin Creek; 19.6 air miles west-northwest of Hayfork; Forest Service Road 3N32. UTM zone 10 453507E 4494866N. 1716 Comment
  UC562653  Carex pachycarpa Joseph P. Tracy 1932-7-11 10411 Humboldt Trinity Summit, Corral Prairie Corral Prairie; Trinity Summit, Corral Prairie 1584 Comment
  UC1115819  Carex pachystachya Joseph P. Tracy 1939-7-9 16340 Humboldt Snow Camp 1402 Comment
  UC303146  Carex pachystachya Joseph P. Tracy 1925-7-5 7165 Humboldt High Prairie Northern Coast Ranges, Bald Mountain 1066 Comment
  HSC90642  Carex pansa Gail Newton 1982-5-2 2517 Humboldt Elk River Wildlife Area, Eureka Comment
  CAS-BOT-BC119166  Carex pansa Joseph Prince Tracy 1935-7-18 14104 Humboldt Low sandy growth at edge of sald marsh next to Table Bluff. 3 Comment
  CAS-BOT-BC28309  Carex scopulorum var. bracteosa Joseph Prince Tracy 1932-7-14 10562 Humboldt Trinity Summit, Corral Prairie, in wet meadow. 1584 Comment
  HSC102222  Carex scopulorum var. bracteosa M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-4 1138 Humboldt Patterson Meadows 1555 Comment
  HSC45953  Carex straminiformis J. P. Smith, Steve Selva 1970-6-30 4126 Humboldt Comment
  RSA757866  Carex subbracteata P. F. Zika 2009-6-15 24494 Humboldt Above route 299, 2.3 road miles west of junction with Chezen Road. 680 Comment
  HSC44120  Carex subfusca Thomas W. Nelson, Jane P. Nelson 1976-6-15 2735 Humboldt Just W of Goat Hill along road off FS 2S08 1463 Comment
  CAS-BOT-BC116679  Carex subfusca Joseph Prince Tracy 1928-6-24 8470 Humboldt Valley of south Yager Creek in wet meadow. 762 Comment
  SEINET3910196  Carex tracyi Thomas W. Nelson, Jane P. Nelson 1978-6-10 4418 Humboldt Eureka Quad. Second growth redwood forest behind Eureka Seventh Day Advent Church on F St.; 0 61 Comment
  UC562649  Carex unilateralis Joseph P. Tracy 1927-7-17 8276 Humboldt Three Cabins; lower western foothills of Chaparral Mountain 457 Comment
  UC1103605  Carex viridula var. viridula Joseph P. Tracy 1934-10-21 13693 Humboldt in front of South End Stone Lagoon (Dry Lagoon) 3 Comment
  RSA170321  Carthamus lanatus T. C. Fuller 1962-8-7 9365 Humboldt Luke's Prairie on ridge 1 mile north above Bull Creek, about 2 miles west of Dyerville Comment
  UC1196863  Castilleja affinis subsp. litoralis Joseph P. Tracy 1912-4-21 3575 Humboldt n slope Humboldt Hill; Northern Coast Region, Humboldt Bay Region 0 Comment
  SBBG7047  Castilleja ambigua subsp. ambigua H. and M. Dearing 1939-5-25 3430 Humboldt beach N of Loleta Comment
  HSC97237  Castilleja ambigua subsp. humboldtiensis Thomas W. Nelson, Jane Nelson 2004-4-20 9182 Humboldt At estuary to Elk River, SE of mouth 2 Comment
  JEPS26223  Castilleja ambigua subsp. humboldtiensis Joseph P. Tracy 1909-9-19 3100 Humboldt Samoa North Coast Region, Humboldt Bay Region 0 Comment
  SJSU8462  Castilleja ambigua subsp. humboldtiensis H. T. Harvey 1977-7-6 609 Humboldt South Spit, Humboldt Bay Comment
  HSC56184  Castilleja applegatei Gilbert Muth 1979-8-1 12116 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1677 Comment
  HSC56005  Castilleja arachnoidea Overton, Butler 1979-7-31 11467 Humboldt Near N Trinity Mtn., close to the town of Hoopa 1940 Comment
  JEPS2925  Castilleja arachnoidea W. L. Jepson Jul 16 1902-Jul 23 1902 2054 Humboldt Trinity Summit 2133 Comment
  UC27149  Castilleja attenuata Harley P. Chandler May 1901 1141 Humboldt Humboldt Bay; North Coast Ranges 3 Comment
  UCD122467  Castilleja exserta subsp. latifolia Linda M. Barker 1976-6-1 1545 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  RSA183597  Castilleja franciscana D. E. Anderson 1962-7-10 2244 Humboldt Luffenholtz Beach, about 2 miles south of Trinidad along old 101 highway. Comment
  HSC56159  Castilleja miniata G. L. Clifton, Griswold 1979-8-1 12028 Humboldt Near N Trinity Mtn., close to the town of Hoopa. 1798 Comment
  UC1196860  Castilleja miniata Joseph P. Tracy 1927-8-22 8337 Humboldt near High Prairie (Bald Mountain); Northern Coast Ranges, Bald Mountain 1066 Comment
  HSC41275  Castilleja pruinosa Brad Klipfel 1974-6-25 427 Humboldt Horse Mtn. Comment
  UC176983  Castilleja pruinosa Joseph P. Tracy 1912-7-31 3931 Humboldt near Buck Mountain summit; Northern Coast Ranges 1676 Comment
  JEPS88810  Castilleja pruinosa T. I. and F. M. Chuang 1991-7-9 7875 Humboldt 4.3 mi se Route 299 junction with Titlow Hill road (on way to Horse Mt) Comment
  UC886507  Castilleja rubicundula subsp. lithospermoides Eliz. Parsons Hawver Jun 1915 Humboldt Carlotta Comment
  HSC79430  Castilleja wightii Kenneth Clark 1980-6-14 670 Humboldt Western slope of Dead Man's Gulch 145 Comment
  UC1502111  Ceanothus R. Sutherland 1976-10-30 1 .30-76 Humboldt Pt. Delgada Quad. 624 Comment
  HSC40884  Ceanothus cordulatus Thomas W. Nelson, Jane P. Nelson 1976-6-22 2869 Humboldt On SW-facing slope at Goat Mtn. lookout 1666 Comment
  UC1198032  Ceanothus cordulatus Joseph P. Tracy 1935-7-14 14092 Humboldt near Clear Lake (ridge); Northern Coast Ranges 1524 Comment
  CAS-BOT-BC49655  Ceanothus foliosus var. foliosus Dr. A. Kellogg; W. G. W. Harford 1868-1-1 s.n. Humboldt Red Mt. Route Comment
  BLMAR199  Ceanothus incanus Donald Hazlett 1994-6-7 199 Humboldt King range, near horse Mt. Ridge rd 670 Comment
  UC1070753  Ceanothus incanus A. E. Wieslander 1931-5-22 218 Humboldt Wilder Ridge Comment
  UC1193319  Ceanothus incanus R. H. Neuns 1950-7-13 130 Humboldt 3 miles south of Alder Point 548 Comment
  HSC36673  Ceanothus oliganthus var. sorediatus R. Sutherland 1975-5-8 7 .8575 Humboldt Mattole Valley, 3 mi W of Honeydew 107 Comment
  CAS-BOT-BC51207  Ceanothus parryi W. R. Dudley 1899-6-20 s.n. Humboldt Bull Creek, by road Comment
  HSC18308  Ceanothus parryi P. J. Zinke 161 Humboldt Divide between Mill Creek and S Fork of Eel River, 2 mi S of Myer's Flat 305 Comment
  HSC43182  Ceanothus parryi R. Sutherland 1975-7-5 9 .5775 Humboldt 244 Comment
  HSC43212  Ceanothus parryi R. Sutherland 1975-4-13 0 .13475 Humboldt 2 mi NE of Briceland along county rd. 183 Comment
  UC1193304  Ceanothus parryi R. H. Neuns 1950-7-13 127 Humboldt 3 miles sosuth of Alder Point 548 Comment
  BLMAR284  Ceanothus thyrsiflorus Jennifer Anthony-Wheeler 1999-5-28 284 Humboldt King range, growing on strawberry Rock grazing allotment 304 Comment
  CAS-BOT-BC52983  Ceanothus thyrsiflorus H. E. McMinn 1922-8-4 334 Humboldt Along Van Duzer River, by redwoods Comment
  CAS-BOT-BC52992  Ceanothus thyrsiflorus Terry Hines; Ellen Purcell; Nina Williams 1988-5-1 66 Humboldt Korbel turnoff, 1/2 mile from weigh station on Hwy 299. 60 Comment
  HSC43193  Ceanothus thyrsiflorus R. Sutherland 1975-5-28 0 .28575 Humboldt N Fork of Horse Mtn. Creek 427 Comment
  HSC45481  Ceanothus thyrsiflorus Maralyn O'Meara 1973-2-9 127 Humboldt McKinleyville, N side of Mad River along N Bank Rd., 0.5 mi. E of Hwy. 101 Comment
  SBBG71412  Ceanothus velutinus H. E. McMinn 1931-6-27 2539 Humboldt up to summit from jct of Trinity and Klamath Rivers Comment
  SEINET193159  Ceanothus velutinus S. K. Harris 1942-6-12 1257 Humboldt Fickle Hill Road 5 miles north and 2 miles east of Boynton Prairie 630 Comment
  HSC55749  Ceanothus velutinus var. velutinus G. L. Clifton, Griswold 1979-7-26 10277 Humboldt Near Salmon Mtn., close to the town of Forks of Salmon 1935 Comment
  UC1222951  Centaurea cyanus Joseph P. Tracy 1943-11-28 17456 Humboldt near Alton (Eel River bar at mouth of Van Duzen); Eel River, Van Duzen Comment
  UC1541642  Centaurea melitensis Harold E. Parks 1934-7-6 5117 Humboldt Jaqua-Yager Creek road Jaqua-Yager Creek 762 Comment
  HSC100711  Centaurea melitensis Carl C. Marshall Jun 1886 287 Humboldt Hooker's near Hoopa. Comment
  HSC61725  Centaurea solstitialis Ruby Van Deventer 1963-7-1 Humboldt Along the Klamath River at Pecwan 198 Comment
  SEINET200851  Centaurea solstitialis Joseph P. Tracy 1933-8-27 13002 Humboldt Camp Grant along Eel River 2-5 miles E of the South Fork 46 Comment
  UC1225819  Centaurium muehlenbergii Joseph P. Tracy 1948-9-20 18217 Humboldt Hoopa Valley 91 Comment
  RSA185429  Centaurium muehlenbergii Clare B. Hardham 1965-08 12858 Humboldt South fork of Eel River. Comment
  HSC16592  Cephalanthera austiniae D. K. Walker 1960-7-21 Humboldt West boundary of Simpson Redwood land, 1/2 mi. N of 500 A Road. Comment
  JEPS64311  Cephalanthera austiniae Lincoln Constance 1934-6-2 795 Humboldt Bull Creek rd. to mouth of Bull Creek (and up Bull Creek); Bull Creek Region, S. Fork Eel R., Bull Creek Comment
  CAS-BOT-BC384899  Cerastium arvense Doris K. Kildale 1928-4-29 5967 Humboldt Horse Mountain 853 Comment
  UC1537306  Cerastium arvense Gordon H. True Jr. 1936-5-11 457 Humboldt 12 mi. w. Miranda (gully on w. slope of Elk Ridge); Elk Ridge 457 Comment
  UC668111  Cerastium glomeratum Joseph P. Tracy 1927-3-27 7849 Humboldt Trinity R. Valley at Willow Creek; Trinity R. Valley, Willow Creek 152 Comment
  HSC4106  Cerastium glomeratum R. D. Modafferi 1965-3-19 57 Humboldt .5 mi. S of Trinidad on Hwy. 101 305 Comment
  HSC98195  Cercis occidentalis Francis Winter 1960-4-24 Humboldt 8 mi. W of Hoopa Indian Reservation, Bair Rd. 686 Comment
  UC199010 Image available Chamaesyce serpyllifolia Chesnut and Drew 1888-7-23 Humboldt Hy-am-pum Comment
  UC1198975  Chamaesyce serpyllifolia Joseph P. Tracy 1925-11-1 7299 Humboldt along Eel River (from South Fork to Scotia, Shively); Northern Coast Ranges 60 Comment
  UC1122501  Chamerion angustifolium subsp. circumvagum H. L. Person 1931-7-30 Humboldt Fieldbrook Eureka Quadrangle Comment
  UC503061  Cheilanthes gracillima Joseph P. Tracy 1932-7-17 10683 Humboldt head of Devil's Hole; Klamath Mts, Trinity Summit 1828 Comment
  JEPS59740  Chenopodium botrys Lincoln Constance 1934-5-27 690 Humboldt Dyerville bridge South Fork Eel River, Bull Creek Region (s end, gravel bar of river) 45 Comment
  RSA478469  Chenopodium botrys M. B. Dunkle 1936-8-22 4860 Humboldt Williams Grove, Eel River. 213 Comment
  HSC99618  Chimaphila menziesii Jimerson, J. Pageau 1979-6-13 755 Humboldt Near Slate Creek Butte, close to the town of Orleans 549 Comment
  HSC17955  Chimaphila umbellata D. E. Anderson 1961-9-30 1846 Humboldt Divide Lake. 915 Comment
  UC1197594  Chimaphila umbellata Joseph P. Tracy 1911-7-7 3421 Humboldt ridge n. of Willow Creek (between Willow & Campbell Creeks, Brannan Mt, near summit); Northern Coast Ranges, Brannan Mt. 1219 Comment
  SD42334  Chimaphila umbellata Carl B. Wolf 1937-8-12 9209 Humboldt North Coast Range, South Fork Mt., 6/10 mi. So. of Blake Lookout 1676 Comment
  UC1225900  Chimaphila umbellata Joseph P. Tracy 1947-7-9 17856 Humboldt Horse Mt. 1432 Comment
  UC176054  Chimaphila umbellata Joseph P. Tracy 1913-7-20 4368 Humboldt near Three Creeks on Willow Creek Rd.; N. Coast Ranges 1066 Comment
  HSC100553  Chlorogalum pomeridianum Carl C. Marshall Jul 1886 260 Humboldt Throughout the Coast Range, Humboldt Bay. Comment
  CAS-BOT-BC30124  Chrysolepis chrysophylla Joseph P. Tracy 1933-8-30 13036 Humboldt Northern Coast Ranges. Grouse Mountain 1524 Comment
  RSA20963  Chrysolepis chrysophylla Carl B. Wolf 1937-9-13 9338 Humboldt North Coast Range, summit of Grouse Mt. 1645 Comment
  RSA246878  Chrysolepis chrysophylla Robert F. Thorne, P. Everett 1965-8-5 35134 b Humboldt Mt. Chamisal: below summit. 747 Comment
  HSC98785  Chrysolepis chrysophylla var. chrysophylla Cara Witte 2007-9-14 649 Humboldt Grouse Mountain Lookout. Forest Service Road 4N70. 1649 Comment
  UC1196374  Chrysolepis chrysophylla var. chrysophylla Joseph P. Tracy 1913-7-13 4357 Humboldt Patrick's Point; Northern Coast Ranges 30 Comment
  HSC54550  Chrysolepis chrysophylla var. minor Overton, Butler 1979-7-23 9540 Humboldt Near Titlow Hill, close to the town of Willow Creek. 1280 Comment
  UCD110101  Chrysolepis chrysophylla var. minor Joseph P. Tracy 1936-8-7 15117 Humboldt Trinity Summit. 2 miles southeast of Devil's Hole. 1584 Comment
  UC164825  Cichorium intybus Joseph P. Tracy 1907-6-20 2572 Humboldt Northern Coast Region; vicinity of Eureka Comment
  UC1197339  Cicuta douglasii Joseph P. Tracy 1926-10-24 7822 Humboldt near High Prairie (Northern Coast Ranges, Bald Mountain); Northern Coast Ranges, Bald Mountain 1066 Comment
  UCD59786  Cinna latifolia Joseph P. Tracy 1936-8-7 15087 Humboldt Trinity Summit, in fir woods, head of Little Hors-Linto Creek. 1371 Comment
  HSC16243  Circaea alpina subsp. pacifica D. E. Anderson 1967-6-7 4349 Humboldt Along Puter Creek, tributary to Mad River, about 3 mi. S of Blue Lake Comment
  HSC58212  Circaea alpina subsp. pacifica Walter Overton 1979-8-1 12340 Humboldt Near Mill Creek, Middle Fork, close to the town of Hoopa. 1341 Comment
  SD42326  Circaea alpina subsp. pacifica Carl B. Wolf 1937-8-13 9253 Humboldt North Coast Range, 11 miles East of Hoopa Valley on the new road towards Trinity Summit 1524 Comment
  HSC40131  Cirsium arvense Thomas W. Nelson, James Nelson 1976-7-28 3082 Humboldt Between Alder Springs and road to Pine Mtn. 1524 Comment
  CAS-BOT-BC284438  Cirsium brevistylum Henry M. Pollard 1948-8-9 s.n. Humboldt Camp Creek near Orleans Comment
  HSC39168  Cirsium brevistylum D. E. Anderson, J. P. Smith 1971-6-28 1235 Humboldt Along Mad River, 2 mi. S of Blue Lake. Comment
  CDA1175  Cirsium cymosum T. R. Haig 1960-6-16 s.n. Humboldt Kneeland, near quarry. 0 Comment
  UCD130620  Cirsium douglasii var. douglasii Collector Unknown Date Unknown s.n. Humboldt Horse Mt. Comment
  CHSC36389  Cirsium occidentale var. candidissimum Donald M. Burke 1981-8-1 67 Humboldt Along Friday Ridge Rd. 560 Comment
  UC129512  Cirsium occidentale var. candidissimum Joseph Burtt Davy and Walter C. Blasdale 1899-6-7 5383 Humboldt near Harris Comment
  UC129605  Cirsium occidentale var. candidissimum Harley P. Chandler 1901-6-1 1490 Humboldt Klamath River North Coast Ranges, Klamath River 426 Comment
  BLMAR592  Cirsium occidentale var. candidissimum Jennifer Wheeler 2010-7-13 592 Humboldt King range 792 Comment
  UCD144226  Cirsium occidentale var. venustum B. Villegas 1998-8-5 s.n. Humboldt near Berry Summit on Titlow Hill Road, 3.9 miles south of Highway 229. Comment
  CAS-BOT-BC288714  Cirsium remotifolium Peter H. Raven; R. Snow 1958-7-21 13654 Humboldt 7.2 miles NW of Capetown on road to Ferndale Comment
  CAS-BOT-BC288722  Cirsium remotifolium Joseph P. Tracy 1934-7-6 13659 Humboldt Kneeland Prairie 762 Comment
  CDA1549  Cirsium remotifolium var. odontolepis W. Simas 1972-7-1 s.n. Humboldt Humboldt Redwoods State Park, forested area near Redcrest, about 6 mi. NW of Weott. 0 Comment
  UC129537  Cirsium remotifolium var. odontolepis J. Burtt Davy 1899-7-30 6190 Humboldt near Arcata (Wild-cat Road); North Coast Ranges Comment
  UCD130816  Cirsium vulgare R. E. Nelson 1956-7-3 192 a Humboldt 1.5 miles south of Brush Mountain in vicinity of Salyer , Six Rivers National Forest. 792 Comment
  RSA12447  Clarkia amoena subsp. huntiana Carl B. Wolf 1934-7-1 5846 Humboldt Along Eel River and Redwood Highway, 1.2 mi. S of F. K. Lane Grove. 61 Comment
  CAS-BOT-BC164177  Clarkia concinna M. S. Jussel 1931-5-2 s.n. Humboldt Garberville Comment
  LA206350  Clarkia gracilis subsp. gracilis H. Lewis; M. Lewis 1947-6-13 420 Humboldt highway 36, 2.3 mi. E of S Fork of Van Duzen River (Bridge 4-119) Comment
  CAS-BOT-BC172390  Clarkia purpurea subsp. viminea Joseph P. Tracy 1936-6-10 14924 Humboldt South Fork of Trinity River, mountain slopes west of its mouth. 457 Comment
  POM247175  Clarkia purpurea subsp. viminea Joseph P. Tracy 1936-6-10 14924 Humboldt South Fork Trinity River; mountain slopes west of its mouth 457 Comment
  UC1071918  Clarkia purpurea subsp. viminea H. and M. Lewis 1947-6-14 422 Humboldt Highway 36 at bridge 4-119 South Fork of Van Duzen River Comment
  HSC54010  Clarkia rhomboidea Griswold, Butler 1979-7-10 7136 Humboldt Near Board Camp Mtn., close to the town of Willow Creek. 1350 Comment
  CAS-BOT-BC439096  Claytonia cordifolia Harold E. Parks; Joseph P. Tracy 1949-6-25 11680 Humboldt Trinity Summit: at Box Camp 1463 Comment
  UC672985  Claytonia exigua subsp. glauca Joseph P. Tracy 1936-4-26 14801 Humboldt Kneeland Prairie 762 Comment
  HSC100605  Claytonia perfoliata Carl C. Marshall Apr 1886 105 Humboldt Damp places. Comment
  CAS-BOT-BC443728  Claytonia rubra subsp. rubra Joseph P. Tracy 1949-6-6 18306 Humboldt Happy Camp Mountain (In Trinity Summit Range, northeast of Hawkins Bar.) 1280 Comment
  HSC41232  Claytonia saxosa Brad Klipfel 1974-5-8 322 Humboldt Horse Mtn. Comment
  HSC65860  Claytonia saxosa Gail Newton 1980-6-28 735 Humboldt Near Mad River Butte. 1536 Comment
  HSC17731  Claytonia sibirica William J. Ferlatte 1963-4-27 20 Humboldt Waste place, near 11th and A St., Arcata Comment
  HSC48843  Claytonia sibirica Brad Klipfel 1973-7-15 199 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  OBI33239  Claytonia sibirica David J. Keil 1983-7-1 17261 Humboldt Along Bull Crk Flats Rd 1.4 mi W of US 101. Humboldt Redwoods State Park Comment
  UC1136740  Claytonia sibirica H. L. Person 1932-8-8 Humboldt Freshwater; Eureka Quad. Comment
  HSC59687  Claytonia sibirica George Kirn 1977-10-3 Humboldt Vicinity of Jolly Giant Creek, 1/4 mi. E of HSU campus 46 Comment
  UC672986  Claytonia sibirica Joseph P. Tracy 1930-7-16 8921 Humboldt McKay Camp; South Fork Mountain 1676 Comment
  UCD124939  Clinopodium douglasii Linda M. Barker 1976-6-22 1614 Humboldt Lanphere-Christensen Dunes, 3 miles west of Arcata. Comment
  SEINET12050375  Clintonia andrewsiana F. H. Utech 1988-1 88 -274 Humboldt 14 mi W of Bridgeville to Carlotta on CA 36, Mi 11.40, Van Duzen County Park, along Van Duzen River 50 Comment
  HSC74151  Clintonia uniflora Gail Newton 1980-7-20 1613 Humboldt Near Bell Swamps 1426 Comment
  POM260783  Clintonia uniflora H. C. Cantelow 1939-6-5 s.n. Humboldt Van Duzen River, 1.5 miles from Dinsmore. Comment
  JEPS25056  Collinsia grandiflora Joseph P. Tracy 1922-5-29 6077 Humboldt South Yager Creek Valley 762 Comment
  UC582466  Collinsia heterophylla Joseph P. Tracy 1935-5-25 13896 Humboldt Dobbyn Creek 152 Comment
  CHSC63420  Collinsia linearis Vernon H. Oswald 1994-6-29 6357 Humboldt Titlow Hill Rd. (Forest Rd. 1) 3.9 mi S of Hwy. 299, SW of Willow Creek. 1289 Comment
  HSC96243  Collinsia linearis Laurel Goldsmith, Wanda Naylor 2005-6-8 4 Humboldt 1.7 mi. S of Hwy. 299 on Titlow Hill Rd. 980 Comment
  HSC20603  Collinsia linearis H. E. Parks 1934-6-14 4789 Humboldt Horse Mtn. 1433 Comment
  JEPS6179  Collinsia linearis Joseph P. Tracy 1936-6-10 14931 Humboldt w mouth of South Fork Trinity River (mountain slopes); South Fork Trinity River 457 Comment
  UC1222820  Collinsia linearis Joseph P. Tracy 1950-7-2 18969 Humboldt on Ridge 2 mi e of Grove's Prairie (Trinity Summit, Happy Camp Mountain); Trinity Summit, Happy Camp Mountain 1371 Comment
  UC26620  Collinsia linearis Harley P. Chandler Jun 1901 1294 Humboldt Hupa Indian Reservation near Hupa (between The Swag and Hupa); North Coast Ranges, Hupa Indian Reservation 304 Comment
  HSC58045  Collinsia rattanii Gilbert Muth 1979-8-1 11904 Humboldt Near Mill Creek Lakes, close to Hoopa 1692 Comment
  UC1196850  Collinsia sparsiflora var. sparsiflora Joseph P. Tracy and Ernest B. Babcock 1912-5-11 3628 Humboldt near Hydesville (hillside between Alton and Hydesville); Northern Coast Region 30 Comment
  UC176050  Collinsia sparsiflora var. sparsiflora Joseph P. Tracy 1913-5-4 4053 Humboldt Kneeland Prairie; North Coast Ranges; Kneeland Prairie 762 Comment
  UC582465  Collinsia sparsiflora var. sparsiflora Joseph P. Tracy 1932-5-10 9932 Humboldt Bear River Ridge; Northern Coast Ranges, Bear River Ridge 609 Comment
  UC52837  Collomia grandiflora Joseph Burtt Davy and Walter C. Blasdale 1899-5 5770 Humboldt hills around Hoopa Valley 304 Comment
  BLMAR531  Collomia heterophylla Jennifer Wheeler 2009-6-23 531 Humboldt King range, On Paradise Ridge road Comment
  HSC16925  Collomia heterophylla D. E. Anderson 1961-9-30 1854 Humboldt Divide Lake. 915 Comment
  HSC32838  Collomia heterophylla Thomas W. Nelson, James Nelson 1973-5-28 948 Humboldt McKeown Ranch N of Dinsmore Comment
  RSA505331  Collomia heterophylla Barbara Ertter, Thomas Delendick 1987-5-16 6944 Humboldt 3 miles E of Berry Summit on Hwy 299, 20 airmiles E of Arcata, near large volcanic rock on S side of road above Willow Creek. 800 Comment
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Feb 14 2007
  HSC96946  Collomia heterophylla Ryoko Ito, Shauna McDonald 2007-6-13 9 Humboldt 1 mi. from NF1 on FS 5N04 1601 Comment
  UC1197842  Collomia heterophylla Joseph P. Tracy 1929-7-4 8611 Humboldt in open places French Camp 1066 Comment
  HSC55668  Collomia tracyi Overton, Butler 1979-7-25 9869 Humboldt Near Sims Mtn., close to the town of Willow Creek 1295 Comment
  HSC58046  Collomia tracyi G. L. Clifton, Griswold 1979-8-1 11905 Humboldt Near Mill Creek Lakes, close to the town of Hoopa. 1692 Comment
  CAS-BOT-BC180242  Comandra umbellata subsp. californica Joseph P. Tracy 1927-5-15 8038 Humboldt Trinity River Valley, near the S Fork 182 Comment
  HSC33175  Conyza canadensis Thomas W. Nelson 1973-8-19 1113 Humboldt McKeown Ranch N of Dinsmore Comment
  RSA0049662  Coptis laciniata Dean Wm. Taylor 2011-5-4 21115 Humboldt Vicinity of Dinsmore; Forest Road 1N30 (Bick Mountain Road) about 0.5 miles SE from junciton with Highway 36 734 Comment
  HSC98642  Corallorhiza maculata Cara Witte 2008-7-11 883 Humboldt Spike Buck Mountain. Forest Service Road 5N18. 0.5 mi. from intersection with National Forest 1. 1589 Comment
  UC14978  Corallorhiza maculata Mrs. M. H. Manning 1901-6-7 17 Humboldt near Hupa Comment
  HSC44843  Corallorhiza mertensiana Thomas W. Nelson, Jane P. Nelson 1977-7-1 3566 Humboldt N side of ridge between Bear Creek & Blanket Creek 1524 Comment
  HSC48977  Cordylanthus maritimus subsp. palustris Jim Bartel 1979-7-17 Humboldt Tributary to Butcher's Slough, within proposed Arcata Marsh Enhancement Project, adjacent to Northwestern Pacific Railroad. Comment
  JEPS25066  Cordylanthus pilosus subsp. pilosus Joseph P. Tracy 1912-8-3 3977 Humboldt opposite Buck Mt.; Valley of Van Duzen River 762 Comment
  BLMAR678  Corethrogyne filaginifolia Jennifer Wheeler 2013-7-12 678 Humboldt King range, Johnny Jack Ridge 677 Comment
  OBI16659  Corethrogyne filaginifolia Joseph P. Tracy 1950-6-18 18764 Humboldt Near Petrolia. Hills between town and Ocean. 1 mi W of town Comment
  BLMAR363  Cornus glabrata Clara Sander 2003-5-29 363 Humboldt Headwaters Forest Reserve, Floating island pond 451 Comment
  CAS-BOT-BC212014  Cornus nuttallii Doris K. Kildale 1927-5-13 3133 Humboldt Lord Ellis Road near Bald Mountain junction. Comment
  RSA1406  Cornus nuttallii E. R. Johnson 1929-08 1432 Humboldt Eel River. 91 Comment
  UC634835  Cornus nuttallii H. L. Mason 1928-7-14 4897 Humboldt E. Fork Eel R. near Garberville; E. Fork Eel R. Comment
  CAS-BOT-BC212175  Cornus sericea Doris K. Kildale 1925-6-27 769 Humboldt Yager Creek near mouth. Comment
  UC1196908  Cornus sericea subsp. sericea Joseph P. Tracy 1930-7-25 8882 Humboldt Trinity R. Valley at Willow Creek; Northern Coast Ranges, Trinity R. Valley, Willow Creek 152 Comment
  UC774995  Cornus sericea subsp. sericea Carl B. Wolf 1937-8-13 9251 Humboldt 11 mi. e. Hoopa Valley (on new rd. towards Trinity Summit); North Coast Range 1524 Comment
  UC154069  Cornus sessilis Joseph Burtt Davy and Walter C. Blasdale 1899-6-19 5634 Humboldt Hoopa Mt. North Coast Ranges, Hoopa Mt. Comment
  HSC81816  Coronopus didymus Kenneth Clark 1981-5-2 1361 Humboldt Point Delgada, Mario's Marina 15 Comment
  JEPS58666  Corylus californica Lincoln Constance 1934-5-24 636 Humboldt bordering lower Look Prairie on e side, South Fork Eel River, Bull Creek Region South Fork Eel River; Bull Creek Region, South Fork Eel River 121 Comment
  UC1225940  Corylus californica Joseph P. Tracy 1946-8-25 17639 Humboldt Table Bluff, N slope; along Hookton road 9 Comment
  UC146217  Corylus californica Joseph P. Tracy 1906-6-24 2497 Humboldt Humboldt Hill, S side North Coast Region, region about Humboldt Bay 0 Comment
  UC902054  Corylus californica Joseph P. Tracy 1949-2-27 18265 Humboldt Kneeland Prairie 762 Comment
  CAS-BOT-BC180306  Corylus cornuta subsp. californica H. E. McMinn 1922-8-4 332 Humboldt Along Van Duzen River Comment
  HSC56470  Corylus cornuta subsp. californica Griswold, Butler 1979-7-12 7298 Humboldt Near Lone Pine Ridge, close to the town of Willow Creek. 1478 Comment
  HSC104409  Corylus cornuta subsp. californica Adam N. Canter 2017-3-10 4 Humboldt Table Bluff, along Hookton Road. 13 Comment
  RSA33407  Corylus cornuta var. californica Doris K. Kildale 1927-3-25 3004 Humboldt Humboldt Hill Comment
  CHSC94959  Cotula coronopifolia K. Lang; J. Lang 2005-3-17 3 Humboldt Gold Bluffs Beach, near Orick. 0 Comment
  HSC5428  Cotula coronopifolia John Warner Hosking 1968-10-10 Humboldt Clam Beach. Comment
  UC665548  Cotula coronopifolia H. E. Parks Sep 1941 24211 Humboldt Little River State Park Comment
  UC1198822  Crassula aquatica Joseph P. Tracy 1914-5-14 4470 Humboldt Fort Seward Northern Coast Ranges, Fort Seward 121 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
  HSC67017  Crepis capillaris J. P. Smith 1971-10-9 5033 Humboldt Banks and flood plain of the Mad River above the fish hatchery. Comment
  HSC73641  Crepis pleurocarpa M. A. Baker 1980-7-23 3136 Humboldt Near Orleans Mtn. 1859 Comment
  UC1223025  Crepis pleurocarpa Joseph P. Tracy 1947-7-9 17846 Humboldt Horse Mountain; top 1432 Comment
  HSC44131  Crepis pleurocarpa Thomas W. Nelson, Jane P. Nelson 1977-7-4 3599 Humboldt Along old trail N of Alder Spring 1555 Comment
  RSA113707  Crepis setosa Joseph P. Tracy 1947-7-13 17769 Humboldt Hors-Linto Creek, near the mouth in woods along an old road 152 Comment
  HSC5462  Crocidium multicaule D. H. Norris 1969-3-1 2272 Humboldt Along Trinity River at Norton Creek, ca. 4 mi. N of Hoopa Comment
  SEINET5261839  Crocosmia X crocosmiiflora Unknown 2002-8-22 86 Humboldt On Fischer Road just N of the Mad River. Comment
  UC1239663  Cryptantha affinis Joseph P. Tracy 1939-8-5 16386 Humboldt Dinsmore's 737 Comment
  UC1239660  Cryptantha leiocarpa Joseph P. Tracy 1932-5-16 10105 Humboldt near Samoa (on Humboldt Bay); Northern Coast Region, Humboldt Bay 6 Comment
  HSC58237  Cryptantha torreyana Walter Overton 1979-8-1 12396 Humboldt Near Mill Creek, Middle Fork, close to the town of Hoopa. 1341 Comment
  HSC99128  Cryptantha torreyana Cara Witte 2008-7-2 796 Humboldt National Forest Road 1; 5 miles south of intersection with 5N04. Before cattle guard crossing. 1406 Comment
  UC1239650  Cryptantha torreyana Joseph P. Tracy 1923-6-3 6259 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  UC562671  Cuscuta californica Joseph P. Tracy Jul 16 1930-Jul 19 1930 8912 Humboldt near McKay Camp; Northern Coast Ranges, South Fork Mountain 1676 Comment
  RSA249509  Cuscuta salina R. F. Thorne, P. C. Everett 1965-8-8 35280 Humboldt N edge of Eureka, E of Hwy 101. 3 Comment
  POM263623  Cuscuta salina var. major C. C. Harris, S. K. Harris 1941-8-28 1175 Humboldt Humboldt Bay near Table Buff Comment
  UCD60113  Cynodon dactylon Joseph P. Tracy 1939-8-18 16427 Humboldt Eureka. 15 Comment
  JEPS39358  Cynoglossum grande Lincoln Constance 1934-6-7 831 Humboldt Bull Creek Region, S. Fork Eel R., Johnson Prairie Comment
  UC1222258  Cynoglossum occidentale Joseph P. Tracy 1949-6-6 18302 Humboldt 6 mi. n.e. Hawkins Bar (Happy Camp Mt., Trinity Summit Rd.); Trinity Summit Range, Happy Camp Mt. 1280 Comment
  UC175683  Cynoglossum occidentale Joseph P. Tracy 1911-7-7 3424 Humboldt near summit Brannan Mt. (ridge n. of Willow Creek, between Willow and Campbell Creeks); Northern Coast Ranges, Brannan Mt. 1219 Comment
  CAS-BOT-BC190379  Cynosurus echinatus H. E. Parks; Joseph P. Tracy 1933-6-11 12542 Humboldt Northern Coast Ranges. Near Miranda. 152 Comment
  HSC37257  Cynosurus echinatus Lon Hall 1975-6-19 389 Humboldt About 2 mi. N of Shelter Cove Rd. on Horse Mtn. Rd. 549 Comment
  HSC89500  Cynosurus echinatus M. Roantree 1985-5-30 68 Humboldt West side of Trinidad Head Comment
  HSC9520  Cynosurus echinatus True Hoyle 1967-7-24 29067 Humboldt Oscar Stapp Ranch near Showers Creek and Showers Pass Comment
  HSC97497  Cynosurus echinatus Cara Witte 2007-5-31 153 Humboldt Along National Forest Rte. 1, near Kinsey Ridge, 1.5 miles north of intersection with 4N09 1299 Comment
  UC1103244  Cynosurus echinatus Joseph P. Tracy 1950-6-21 18855 Humboldt Trinity River Valley at Willow Creek; Trinity River Valley at Willow Creek 152 Comment
  UCD54033  Cyperus eragrostis K. Esau 1934-5-6 s.n. Humboldt Fort Seward. 152 Comment
  CAS-BOT-BC113831  Cyperus niger var. capitatus Henry M. Pollard 1944-9-1 s.n. Humboldt Near Orleans. Comment
  HSC36651  Cypripedium californicum J. D. Ackerman 1975-6-18 469 Humboldt 2.7 mi E of Berry Summit, Hwy. 299 W of Willow Creek . Comment
  RSA382104  Cypripedium californicum Carl Purdy 1932-5-1 s.n. Humboldt Humboldt Comment
  UC302157  Cypripedium californicum Joseph P. Tracy 1926-6-27 7669 Humboldt Horse Mountain Northern Coast Ranges 1463 Comment
  UCSB29351  Cystopteris fragilis Phelps, M. 1972-3-22 Humboldt 0.7 mi. along Benbow Drive north, 50 yds. West of roadside in creekbed, Benbow 167 Comment
  CAS-BOT-BC201009  Cytisus scoparius John H. Thomas 1966-3-19 11484 Humboldt Near Westhaven Drive and highway 101, Trinidad 60 Comment
  UC1222419  Cytisus scoparius Joseph P. Tracy 1950-6-17 18830 Humboldt Eureka Comment
  UCD105685  Cytisus scoparius R. N. Raynor 1935-5-22 s.n. Humboldt Fort Seward. Comment
  HSC47796  Dactylis glomerata M. A. Watkins 1978-6-10 3 Humboldt East side of the 7th Street overpass of Hwy 101 Comment
  HSC9529  Dactylis glomerata John Warner Hosking 1966-8-6 Humboldt Fern Lake, behind Humboldt State College campus, Arcata Comment
  CAS-BOT-BC189746  Danthonia californica Doris K. Kildale 1928-7-1 5308 Humboldt French Camp - Bald Hills - Orick Martins Ferry road. Comment
  HSC32479  Danthonia californica D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-17 5721 Humboldt McKeown Ranch, N of Dinsmore Comment
  UCD60985  Danthonia californica E. B. Copeland 1930-6-5 Humboldt Scotia. Comment
  UC526686  Danthonia californica var. americana Joseph P. Tracy 1931-5-31 9548 Humboldt Kneeland Prairie Northern Coast Ranges 792 Comment
  UC552732  Danthonia californica var. americana Joseph P. Tracy 1935-5-25 13853 Humboldt Fort Seward 106 Comment
  SBBG44189  Darmera peltata K. K. Muller 1954-6-21 630 Humboldt Mad River Camp 2, Mad River, below Ruth Post Office Comment
  UC169898  Datisca glomerata Harley P. Chandler June, 1901 1518 Humboldt Klamath River; North Coast Ranges, Klamath River 426 Comment
  HSC49087  Daucus carota Patricia Shesgreen 1978-8-8 133 Humboldt 7th & A St., Arcata Comment
  UC249612  Daucus pusillus Joseph P. Tracy 1921-7-10 5845 Humboldt near ocean Big Lagoon; Northern Coast Region, Big Lagoon 6 Comment
  UCD127415  Daucus pusillus P. B. Kennedy 1928-7-15 s.n. Humboldt Sea Cliffe, near Trinidad. Comment
  JEPS23882  Delphinium decorum subsp. tracyi Frank W. Gould 1939-5-30 837 Humboldt Near top of Horse Mountain (about 25 miles due east of Eureka) Comment
  UC1005604  Delphinium decorum subsp. tracyi Frank W. Gould 1939-5-29 837 Humboldt in wet meadow near ski hut; Horse Mountain 1005 Comment
  UC183703  Delphinium decorum subsp. tracyi Joseph P. Tracy 1913-6-17 4156 Humboldt streamlet near summit Northern Coast Ranges, Buck Mountain 1219 Comment
  HSC56226  Delphinium glaucum G. L. Clifton, Griswold 1979-8-2 12268 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  CAS-BOT-BC10317  Delphinium hesperium Doris K. Kildale 1926-5-31 2079 Humboldt Cold Brook Camp between Kilipeville & lower Lake 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
  CAS-BOT-BC10146  Delphinium menziesii Doris K. Kildale 1926-3-21 1617 Humboldt Kneeland Prairie 762 Comment
  CAS-BOT-BC9961  Delphinium nudicaule Doris K. Kildale 1926-3-21 1582 Humboldt Kneeland Prairie 762 Comment
  HSC25012  Delphinium nudicaule Eugene Andreuccetti 1964-5-2 38 Humboldt 50 yds. from Ruby Creek on Hwy. 299 Comment
  HSC25006  Delphinium nudicaule S. Estes 1964-4-29 12 Humboldt May Ranch, 2 mi. N of Bridgeville 305 Comment
  HSC89622  Delphinium nudicaule Pat Daly, Rudy Galindo 1988-3-12 5 Humboldt S Fork Trail of Trinity River, trailhead 12.4 mi. up S Fork Rd. from Hwy. 299 457 Comment
  HSC44525  Delphinium nuttallianum Brad Klipfel 1973-7-1 133 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC74385  Delphinium nuttallianum M. A. Baker 1980-6-28 2471 Humboldt Near Mad River Buttes 1445 Comment
  RSA259574  Delphinium trolliifolium Thomas W. Nelson, James Nelson 1973-5-28 942 Humboldt McKeown Ranch north of Dinsmore. Comment
  UC1196335  Delphinium trolliifolium Joseph P. Tracy 1946-6-15 17562 Humboldt foothills of Horse Mountain 1066 Comment
  UC1225745  Delphinium trolliifolium Joseph P. Tracy 1946-6-15 17561 Humboldt lower slopes of mt Horse Mountain 1066 Comment
  UC60234  Deschampsia cespitosa subsp. beringensis Joseph Burtt Davy and Walter C. Blasdale Aug. 1899 6214 Humboldt Eureka Comment
  HSC27104  Deschampsia cespitosa subsp. holciformis L. M. Malloy 1965-5-19 38 Humboldt Arcata, southside of Samoa Rd., opposite of KATA radio station, adjacent to the railroad tracks, bank of a drainage ditch. Comment
  SEINET3927645  Deschampsia danthonioides Joseph P. Tracy 1950-6-25 18901 Humboldt West side of Buck Mt. 3 miles south of Burr Valley.; 0 1219 Comment
  UC1103219  Deschampsia danthonioides Joseph P. Tracy 1914-5-30 4477 Humboldt Alton Northern Coast Ranges, Alton 30 Comment
  BLMAR267  Deschampsia elongata Jennifer Anthony-Wheeler 1999-6-16 267 Humboldt Headwaters Forest Reserve, growing near beginning of wildlife rd 524 Comment
  HSC58650  Deschampsia elongata G. L. Clifton 1979-7-31 11682 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1805 Comment
  HSC75453  Deschampsia elongata J. O. Sawyer 1980-7-18 3595 Humboldt North Trinity Mountain Research Natural Area, north of Mill Creek Lake to Red Cap Hole. Comment
  POM207196  Deschampsia elongata Jos Burtt Davy 1899-6-12 5476 Humboldt Elk Prairie Comment
  SEINET181183 Image available Deschampsia elongata Bassett Maguire, R Maguire; CB Maguire 1934-6-8 15070 Humboldt Bolling Grove State Park ; Under redwoods Comment
  UCSC000015  Deschampsia elongata H. S. Yates 1936-6-16 5666 Humboldt 1 mile S.W. of Samoa- Eureka 6 Comment
  HSC74201  Descurainia incisa subsp. incisa M. A. Baker 1980-7-19 3005 Humboldt Near Bret Hole. 1814 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
  UC855123  Dicentra formosa Elizabeth Parsons Hawver Jun 1915 Humboldt Carlotta Comment
  CAS-BOT-BC402409  Dicentra formosa subsp. formosa Eliz. Parsons Hawver 1915-6-1 s.n. Humboldt Carlotta Comment
  HSC72685  Dicentra formosa subsp. oregana J. P. Smith 1977-7-3 9267 Humboldt Onion Lake Comment
  HSC48823  Dicentra uniflora Brad Klipfel, J. O. Sawyer, J. P. Smith 1973-5-27 35 Humboldt Grogan's Hole near N Trinity Mtn. 1829 Comment
  JEPS64151  Dichelostemma capitatum Milo S. Baker 137 Humboldt South Fork Yager Creek Comment
  UC30061  Dichelostemma ida-maia Harley P. Chandler May 1901 1254 Humboldt Redwood Belt North Coast Ranges 152 Comment
  UC635734  Dichelostemma ida-maia H. L. Mason 1928-7-20 4909 Humboldt South Fork Mountain Comment
  CAS-BOT-BC501019  Dichelostemma ida-maia L. R. Abrams 1918-6-16 7135 Humboldt Willow Creek Comment
  JEPS5679  Dichelostemma ida-maia Milo S. Baker 1923-7-20 47 b Humboldt near head of Yager Creek Comment
  UCD63953  Digitaria ischaemum Joseph P. Tracy 1950-9-22 19371 Humboldt Klamath River, near Slate Creek, below Orleans 8 miles. 121 Comment
  CAS-BOT-BC150340  Diplacus aurantiacus Doris K. Kildale 1925-6-21 726 Humboldt Briceland Bridge 1/2 mile west of Garberville 114 Comment
  POM277202  Disporum hookeri var. hookeri Lyman Benson 1928-7-11 163 Humboldt Weott Ranger Station, Mt. Range: Seaward N Coast; Drainage Area: S Fork Eel River. 61 Comment
  POM118601  Disporum smithii Marcus E. Jones 1924-4-26 s.n. Humboldt Eureka. Comment
  UC146218  Disporum smithii Joseph P. Tracy 1908-6-9 2662 Humboldt Kneeland Prairie; Northern Coast Ranges, Kneeland Prairie 762 Comment
  UC535741  Disporum smithii Eleanor Armstrong 1169 B Humboldt Richardson Grove Comment
  UC249505  Dodecatheon hendersonii Joseph P. Tracy 1922-4-30 5994 Humboldt near Willow Creek (Trinity River Valley); Northern Coast Ranges, Trinity River Valley 152 Comment
  BLMAR114  Dodecatheon hendersonii Jennifer Anthony-Wheeler 1995-3-15 114 Humboldt King range, growing under white oaks, shaded meadow beside river at Honeydew campground 121 Comment
  HSC98690  Dodecatheon hendersonii subsp. hendersonii Cara Witte 2008-6-9 702 Humboldt Off National Forest 1, near Board Camp Mountain. Approximately 4 miles south of Brays Opening and 1/2 mile west of the road. 1506 Comment
  HSC55019  Dodecatheon jeffreyi Overton, Butler 1979-7-31 11426 Humboldt Near Water Dog Lakes, close to the town of Hoopa 1830 Comment
  HSC56167  Dodecatheon jeffreyi G. L. Clifton, Griswold 1979-8-1 12056 Humboldt Near N Trinity Mtn., close to the town of Hoopa. 1798 Comment
  UC602557  Downingia cuspidata Joseph P. Tracy 1935-5-25 13843 Humboldt Fort Seward 106 Comment
  POM47623  Downingia yina J. B. Feudge 1923-7-29 108 Humboldt Rohnerville. 15 Comment
  RSA654125  Downingia yina Beecher Crampton 1956-6-26 3651 Humboldt Margin of Snow's Lake, 3.5 miles east of Seigler Springs Comment
  UC1199179  Draba verna Joseph P. Tracy 1932-5-1 9841 Humboldt along Van Duzen River (Alton); North Coast Ranges, along Van Duzen River 30 Comment
  SEINET3164219  Drosera rotundifolia N. Dennis 1965-6-30 140 Humboldt Sphagnum bog at Big Lagoon County Park, southwest corner of Big Lagoon Comment
  CAS-BOT-BC159610  Drymocallis glandulosa var. glandulosa Henry M. Pollard 1943-8-1 s.n. Humboldt Orleans Mt. 1828 Comment
  HSC57850  Drymocallis glandulosa var. reflexa G. L. Clifton 1979-7-31 11357 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  UC492178  Drymocallis lactea var. austiniae Joseph P. Tracy Jul 16 1930-Jul 19 1930 8976 Humboldt South Fork Mountain Northern Coast Ranges (wet meadow at McKay Camp) 1676 Comment
  CAS-BOT-BC157793  Drymocallis lactea var. lactea Doris Kildale Gillespie 1931-6-7 10628 Humboldt South Fork Mt., Blake Lookout 1726 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
  UCSB29333  Dryopteris arguta Phelps, M. 1972-3-20 Humboldt Near Somerville homestead, Elk Ridge. 609 Comment
  HSC65139  Dysphania botrys J. P. Smith 1971-10-9 5013 Humboldt Banks and flood plain of the Mad River above the fish hatchery. Comment
  UCD60826  Echinochloa crus-galli George Branstetter 1926-8-12 Humboldt Alton. Comment
  HSC100404  Echinospermum Carl C. Marshall Jun 1888 3 Humboldt Pilot Creek. Comment
  OBI22607  Eleocharis acicularis Joseph P. Tracy 1934-7-13 13393 Humboldt Dow's Prairie Comment
  CAS-BOT-BC113644  Eleocharis acicularis Doris K. Kildale 1925-8-17 1268 Humboldt Trinity Summit. Water Dog Lake. 1828 Comment
  UC1116223  Eleocharis acicularis Joseph P. Tracy 1934-7-13 13393 Humboldt Dow's Prairie; dried pond 60 Comment
  HSC7338  Eleocharis erythropoda E. Hunt 1949-5-17 17 Humboldt S Fork Mtn. Comment
  HSC39049  Eleocharis macrostachya Linda M. Barker 1976-6-22 1621 Humboldt 3 mi. W of Arcata Comment
  UC666873  Eleocharis macrostachya Joseph P. Tracy 1934-8-14 13570 Humboldt Alton 30 Comment
  CAS-BOT-BC113112  Eleocharis obtusa Henry M. Pollard 1946-8-16 s.n. Humboldt Along river near Orleans Comment
  HSC7341  Eleocharis obtusa J. P. Tracy 1927-8-7 8319 Humboldt Lack Pond in Trinity River Valley opposite mouth of Willow Creek 152 Comment
  UCD49814  Eleocharis pachycarpa S. Galen Smith; Malcolm A. Nobs 1949-8-11 1346 Humboldt Marshes on eastern side of Big Lagoon, Humboldt County. Comment
  HSC77865  Eleocharis parvula L. J. Heflin 1984-5-13 5 Humboldt Hauser Marsh Comment
  HSC98996  Eleocharis quinqueflora Cara Witte 2008-7-16 925 Humboldt Mud Lake. Off National Forest 1, near Buck Flat. 1569 Comment
  RSA44449  Elymus elymoides Henry M. Pollard 1948-8-4 s.n. Humboldt Orleans Mt. trail 1677 Comment
  HSC58661  Elymus elymoides var. elymoides G. L. Clifton, Griswold 1979-7-1 11948 Humboldt Near Horse Trail Ridge, close to the town of Hoopa. 516 Comment
  UC1103204  Elymus glaucus Joseph P. Tracy 1908-6 2856 Humboldt opposite Buck Mountain; Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  UC526790  Elymus glaucus subsp. virescens Joseph P. Tracy 1927-6-26 8213 Humboldt Stone Lagoon Northern Coast Region 6 Comment
  UCD62410  Elymus glaucus subsp. virescens G. L. Stebbins Jr.; G. L. Church 1941-5-26 3106 Humboldt Just north of Little River, south of Trinidad. Comment
  HSC9737  Elymus mollis subsp. mollis J. R. Woodside 1963-5-3 17 Humboldt 1.25 miles N of Fairhaven. Comment
  UC1103291  Elymus trachycaulus A. H. Murphy 1949-7-22 Humboldt Bear River Ridge; at intersection of Monument Road 457 Comment
  UC185826  Elymus trachycaulus Joseph P. Tracy 1912-7-27 3885 Humboldt Kneeland Prairie Northern Coast Ranges of California 762 Comment
  UCD62651  Elymus trachycaulus Les Berry 1956-6-20 s.n. Humboldt May Ranch, Bridgeville. 609 Comment
  HSC8763  Elymus trachycaulus subsp. trachycaulus D. W. C. 1956-6-20 19 Humboldt May Ranch, Bridgeville. 457 Comment
  HSC102919  Epilobium M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-3 1077 Humboldt Patterson Meadows 1555 Comment
  RSA125036  Epilobium angustifolium var. macrophyllum Peter H. Raven 1958-7-21 13651 Humboldt 2.9 miles south of Ferndale on road to Cape Mendocino Comment
  HSC57372  Epilobium brachycarpum Overton, Butler 1979-7-26 10086 Humboldt Near Cold Spring, close to the town of Willow Creek 1408 Comment
  HSC35708  Epilobium brachycarpum Thomas W. Nelson, B. Reinhardt 1975-7-30 2117 Humboldt E of Pilot Rock Comment
  RSA40412  Epilobium brachycarpum P. A. Munz 1948-8-13 12348 Humboldt Highway 229, 21 miles E of Blue Lake. 762 Comment
  UCR179429  Epilobium brevistylum J. M. Tucker 1948-9-3 1858 Humboldt North Coast Range, Six Rivers National Forest, Clear Lake, near junction of Friday Ridge Road and Horse Mountain/Grouse Mountain Road 1494 Comment
  UC668305  Epilobium campestre Joseph P. Tracy 1938-7-5 16009 Humboldt 5 mi e Carlotta; Strong's District School House 45 Comment
  HSC55351  Epilobium canum subsp. latifolium Griswold, Butler 1979-7-12 7272 Humboldt Near Cedar Creek, close to the town of Willow Creek 1158 Comment
  UC1197003  Epilobium ciliatum subsp. ciliatum Joseph P. Tracy 1920-8-15 5388 Humboldt Bluff Creek Northern Coast Ranges, Klamath River 152 Comment
  UC726349  Epilobium ciliatum subsp. ciliatum A. A. Heller 1923-7-8 13767 Humboldt 10 mi s Dyerville; Humboldt Camp Comment
  POM225269  Epilobium ciliatum subsp. ciliatum P. A. Munz 1936-8-10 14340 Humboldt Little Van Duzen River, 15 miles east of Bridgeville. Comment
  HSC103280  Epilobium ciliatum subsp. glandulosum John McRae 2012-9-7 1270 Humboldt Six Rivers National Forest, Lower Trinity District, Forest Service Road 5N10, at the crossing of Willow Creek. 1294 Comment
  HSC98622  Epilobium ciliatum subsp. glandulosum Cara Witte 2007-7-25 584 Humboldt Forest Service Road 6N08. Friday Ridge Road. 1/4 mile east of intersection with 5N10. 1237 Comment
  UC668281  Epilobium ciliatum subsp. glandulosum Joseph P. Tracy 1937-7-25 15562 Humboldt nw Hawkins Bar; Trinity Summit Range, Happy Camp Mountain 1280 Comment
  HSC16348  Epilobium ciliatum subsp. watsonii Paul Shields 1955-9-23 Humboldt 5 mi. SE of Arcata Comment
  HSC98949  Epilobium densiflorum Cara Witte 2008-7-28 946 Humboldt Buck Flat. Near intersection of National Forest 1 and Forest Service Road 5N01. 1591 Comment
  JEPS31516  Epilobium densiflorum Joseph P. Tracy 1934-7-9 13352 Humboldt bed of dry pond Dobbyn Creek 152 Comment
  HSC16223  Epilobium densiflorum J. P. Tracy 1932-10-12 10872 Humboldt Miranda, along S Fork of Eel River 122 Comment
  HSC55113  Epilobium glaberrimum G. L. Clifton 1979-7-31 11868 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  HSC102101  Epilobium glaberrimum subsp. fastigiatum M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 1004 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  POM160843  Epilobium hallianum Joseph P. Tracy 1923-5-13 6204 Humboldt North Coast Ranges: Bridgeville. 229 Comment
  UC144091  Epilobium hallianum Joseph P. Tracy 1908-6 2753 Humboldt near pond above mouth of Little Van Duzen (nw slope of mt.); Northern Coast Ranges, Buck Mountain 762 Comment
  HSC49636  Epilobium minutum J. P. Smith, J. O. Sawyer 1973-5-12 6700 Humboldt 9.6 mi. from Redwood Creek on Hoopa Rd. Comment
  HSC75356  Epilobium minutum J. O. Sawyer, M. A. Ericksen 1980-7-18 3643 Humboldt Along FS Rd. 10N02, S of Middle Fork of Mill Creek Comment
  HSC96280  Epilobium minutum Eric Schori, Kazuyuki Ishimaru 2005-6-15 13 Humboldt About 18 mi. S of Hwy. 299 1400 Comment
  UC583070  Epilobium minutum P. A. Munz 1936-8-13 14382 Humboldt 10 mi w Willow Creek Comment
  POM272052  Epilobium septentrionale J. W. Thompson 1920-9-22 s.n. Humboldt Hoopa Valley Comment
  RSA1439  Epilobium septentrionale E. R. Johnson 1929-08 1437 Humboldt Eel River. 91 Comment
  HSC16602  Epipactis gigantea J. Wendell Howe 1931-6-18 Humboldt Redway Comment
  SEINET10296819  Epipactis gigantea Unknown 1949-7-7 18335 Humboldt CALIFORNIA PLANTS -- HUMBOLDT COUNTY BLUE SLIDE, on VAN DUZEN RIVER Comment
  CAS-BOT-BC57106  Equisetum X ferrissii Henry M. Pollard 1946-8-31 s.n. Humboldt Near Wilson Creek, Orleans Mt. Comment
  HSC61024  Equisetum arvense Jimerson, J. Pageau 1979-8-10 723 Humboldt Near Tish Tang A Tang Ridge, close to the town of Hoopa 1464 Comment
  UC1239792  Equisetum laevigatum H. E. Parks and Joseph P. Tracy 1932-5-11 9966 Humboldt along R.R. Samoa; Northern Coast Ranges 6 Comment
  CAS-BOT-BC57791  Equisetum telmateia Joseph P. Tracy 1934-6-28 13268 Humboldt By Salmon Creek. 9 Comment
  HSC36227  Equisetum telmateia subsp. braunii John Rehling 1975-4-21 52 Humboldt Along Jolly Giant Creek behind HSU campus. Comment
  HSC37403  Equisetum telmateia subsp. braunii Gary S. Lester, Roger L. Yearout, Judith G. Dickson 1974-7-24 512 Humboldt Along Lost Man Creek. 38 Comment
  UC667933  Equisetum telmateia subsp. braunii Joseph P. Tracy 1937-6-26 15361 Humboldt at Willow Creek Willow Creek; Trinity River Valley 152 Comment
  POM281806  Equisetum telmateia var. braunii Lyman Benson 1928-7-9 824 Humboldt Weott Ranger Station. Seaward N Coast Mtn range, S Fork Eel River. 61 Comment
  HSC5491  Erechtites glomeratus H. E. Parks, S. T. Parks Jul 1937 24033 Humboldt Trinidad; Spruce Cove 64 Comment
  CAS-BOT-BC299910  Erechtites minimus Doris K. Kildale 1925-7-28 1104 Humboldt On the Van Duzen River near Strong's Station Comment
  HSC57889  Eremogone congesta var. suffrutescens Overton, Butler 1979-7-31 11446 Humboldt Near Water Dog Lakes, close to the town of Hoopa 1830 Comment
  RSA639200  Erica lusitanica Gary D. Wallace 1988-4-11 2806 Humboldt South of Eureka: Just north of Loleta on Hwy 101, just south of Loleta Drive. 60 Comment
  HSC44089  Ericameria nauseosa var. speciosa Thomas W. Nelson, Jane P. Nelson 1977-9-3 3717 Humboldt N of Bear Creek 1494 Comment
  UC1792474  Erigeron Thomas W. Nelson, Sydney Carothers 2004-6-18 9249 Humboldt Along Swayback Ridge Road which branches of Forest Service Rooad 1N08 ca 1/4 mil past gate. 1356 Comment
  OBI16523  Erigeron aliceae Joseph P. Tracy 1949-8-11 18487 Humboldt Near the C.M. Preston place, 1-1/2 mi SE of Snow Camp 1463 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
  CAS-BOT-BC296114  Erigeron foliosus var. confinis Henry M. Pollard 1948-7-23 s.n. Humboldt Reece Point near Orleans Comment
  HSC5525  Erigeron glaucus D. E. Anderson 1961-8-25 1755 Humboldt 1.5 mi. S of Trinidad Comment
  POM225418  Erigeron inornatus var. biolettii P. A. Munz 1936-8-9 14331 Humboldt South fork of Eel River, 5 miles north of Humboldt-Mendocino County line Comment
  HSC57622  Erigeron klamathensis G. L. Clifton, Griswold 1979-7-25 10752 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1814 Comment
  HSC74492  Erigeron klamathensis M. A. Baker 1980-7-24 3208 Humboldt Near Orleans Mtn. 1625 Comment
  HSC39180  Erigeron philadelphicus D. E. Anderson, J. P. Smith 1971-6-28 - 1221 Humboldt Along Mad River, 2 mi. S of Blue Lake Comment
  UC164845  Erigeron philadelphicus var. philadelphicus Joseph P. Tracy 1911-7-4 3304 Humboldt along, near its mouth Willow Creek (tributary of Trinity River); Northern Coast Ranges, Trinity River, Willow Creek 182 Comment
  UC164846  Erigeron philadelphicus var. philadelphicus Joseph P. Tracy 1911-7-12 3529 Humboldt Blue Lake Northern Coast Ranges, Blue Lake 60 Comment
  CAS-BOT-BC224255  Eriodictyon californicum Doris K. Kildale 1925-6-21 747 Humboldt Briceland Bridge 1/2 mi. west of Garberville 114 Comment
  RSA44298  Eriodictyon californicum H. M. Pollard 1945-9-1 s.n. Humboldt Road to Redcap Creek. Comment
  HSC17296  Eriogonum latifolium R. I. Bonn 1965-5-7 25 Humboldt 4 mi. W of Arcata on Lanphere Rd. Comment
  RSA331968  Eriogonum latifolium Dave Kelly 1985-7-28 4064 Humboldt Near Manila, Samoa Peninsula near Eureka. Comment
  UC1225802  Eriogonum latifolium Joseph P. Tracy 1947-7-3 17761 Humboldt Trinidad 3 Comment
  CAS-BOT-BC259164  Eriogonum latifolium Joseph P. Tracy 1938-7-15 16062 Humboldt Near bay shore at Bucksport, Eureka 6 Comment
  RSA273152  Eriogonum latifolium Glenn A. Gorelick 1967-6-11 s.n. Humboldt Samoa sand dunes, near Arcata Comment
  UC672913  Eriogonum latifolium Joseph P. Tracy 1927-6-18 8175 Humboldt s point of the Cape (near ocean shore); Cape Mendocino 3 Comment
  HSC99501  Eriogonum nudum var. nudum K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-22 161 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
  UC198588  Eriogonum nudum var. nudum Joseph P. Tracy 1916-6-20 4729 Humboldt Dobbyn Creek 182 Comment
  RSA21586  Eriogonum nudum var. nudum Carl B. Wolf 1937-8-13 9231 Humboldt North coast range, 8 mi. east of Hoopa Valley on new road towards Trinity summit. 1220 Comment
  CAS-BOT-BC261721  Eriogonum nudum var. oblongifolium A. G. Vestal 1937-6-22 s.n. Humboldt Kneeland Prairie Comment
  HSC25980  Eriogonum nudum var. oblongifolium Thomas W. Nelson 1970-9-3 231 Humboldt Beside Mad River Comment
  HSC54720  Eriogonum umbellatum Overton, Butler 1979-7-26 10095 Humboldt Near Cold Spring, close to the town of Willow Creek 1417 Comment
  UC412902  Eriogonum umbellatum var. nelsoniorum P. E. Goddard 1906-6 657 Humboldt Lasseck Pk. Comment
  HSC55278  Eriogonum umbellatum var. stellatum Overton, Butler 1979-8-2 12689 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  HSC5590  Eriophyllum lanatum Paul Shields 1955-6-12 Humboldt 6 mi. W of Myers Flat Comment
  HSC53823  Eriophyllum lanatum var. achilleoides Griswold, Butler 1979-7-10 6269 Humboldt Near Board Camp Mtn., close to the town of Willow Creek 1372 Comment
  UC1199141  Eriophyllum lanatum var. achilleoides Joseph P. Tracy 1934-7-6 13664 Humboldt Iaqua; North Coast Ranges, Iaqua 609 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
  UC507068  Eriophyllum lanatum var. achilleoides Lincoln Constance 1933-5-21 E 34 Humboldt 1 mi n Garberville; South Fork of Eel River Comment
  UC582677  Eriophyllum lanatum var. achilleoides Joseph P. Tracy 1936-6-10 14929 Humboldt mountain slopes w of mouth South Fork Trinity River 457 Comment
  HSC67897  Eriophyllum lanatum var. arachnoideum J. P. Smith 1973-5-26 6839 Humboldt Scotia Bluffs along the Eel River near Rio Dell Comment
  UC727166  Eriophyllum staechadifolium A. A. Heller 1924-7-23 13878 Humboldt between Little River and Trinidad Comment
Read comments
Sep 29 2006
  UC180182  Erodium botrys Joseph P. Tracy 1914-5-14 4462 Humboldt Fort Seward Northern Coast Ranges 121 Comment
  UC1198967  Erodium brachycarpum Joseph P. Tracy 1923-3-17 6161 Humboldt Garberville Northern Coast Ranges 121 Comment
  HSC57949  Erysimum capitatum var. capitatum G. L. Clifton, Terry Griswold 1979-7-31 11627 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1719 Comment
  HSC57433  Erysimum perenne G. L. Clifton, Terry Griswold 1979-7-26 10219 Humboldt Near Salmon Mtn., close to the town of Forks of Salmon 1981 Comment
  CAS-BOT-BC383050  Erythranthe guttata David B. Lowry 2005-5-16 BHI Humboldt In a stream running under Bald Hills Road 772 Comment
  UC275550  Erythronium californicum Joseph P. Tracy 1924-4-27 6639 Humboldt on hwy near Ruby Creek; Northern Coast Ranges, Willow Creek 609 Comment
  HSC15487  Erythronium citrinum var. citrinum R. A. Rasp 1964-4-5 29 Humboldt 7 mi. past Hoopa on Willow Creek Rd. Comment
  HSC15488  Erythronium citrinum var. citrinum E. C. Murczek 1964-4-4 29 Humboldt 8 mi. N of Hoopa Comment
  HSC32040  Erythronium oregonum subsp. leucandrum A. M. Montalvo, J. D. Ackerman 1974-4-14 172 Humboldt Chezem Rd. near intersection with Hwy. 299 just W of Redwood Creek Comment
  UC666963  Erythronium revolutum Joseph P. Tracy 1927-5-15 8064 Humboldt woods at head Pine Creek; Hoopa Mountain 1066 Comment
  CAS-BOT-BC403040  Eschscholzia californica Carl W. Simpson 1941-5-8 19 Humboldt Garberville Comment
  HSC16761  Eschscholzia californica A. E. Inman 1962-5-25 Humboldt Mad River, Lindsey Creek junction, 100 yards W of Lindsey Creek Comment
  UC1196292  Eschscholzia californica Joseph P. Tracy 1943-11-28 17459 Humboldt Alton to Fortuna; Eel River 15 Comment
  RSA21096  Eschscholzia californica var. crocea Carl B. Wolf 1937-6-14 8824 Humboldt North Coast Range, Kneeland Prairie 823 Comment
  HSC58800  Eucephalus ledophyllus G. L. Clifton, Griswold 1979-7-31 11593 Humboldt Near Trinity Summit Guard Station, close to Hoopa 1884 Comment
  HSC58819  Eucephalus ledophyllus Gilbert Muth 1979-8-1 12127 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1677 Comment
  UC204747  Euchiton sphaericus Joseph P. Tracy 1918-9-29 5103 Humboldt 4 mi above the mouth South Fork of Eel River; Northern Coast Ranges, South Fork of Eel River 60 Comment
  CAS-BOT-BC206923  Euonymus occidentalis Joseph P. Tracy 1935-5-24 13823 Humboldt Eureka, 3 miles SE of business district 91 Comment
  POM47094  Euonymus occidentalis J. B. Feudge 1923-7-25 86 Humboldt Fortuna 23 Comment
  JEPS9605  Euonymus occidentalis var. occidentalis Joseph P. Tracy 1935-5-24 13823 Humboldt in woods 3 mi. s.e. of business district Eureka 91 Comment
Read comments
May 24 2013
  JEPS51869  Euphorbia crenulata Harley P. Chandler Jun 1901 1457 Humboldt Bluff Creek; North Coast Ranges, Klamath River 304 Comment
  UC1198985  Euphorbia crenulata Joseph P. Tracy 1928-2-26 8396 Humboldt near Centerville (at Fleener's Gulch); Northern Coast Ranges 30 Comment
  HSC7994  Euphorbia peplus Richard Steele 1962-4-14 19 Humboldt 1/4 mi. W of H.S.C. campus 15 Comment
  HSC5091  Eurybia radulina H. E. Parks, J. P. Tracy 1930-9-15 769 Humboldt Kneeland Bald Hills Comment
  UC198587  Eurybia radulina Joseph P. Tracy 1917-9-2 4843 Humboldt Grouse Mountain 1524 Comment
  POM248197  Euthamia occidentalis S. K. Harris, Charlotte Wilder 1938-9-7 879 Humboldt Bars of the Van Duzen River, above Blue Slide Comment
  UC620702  Euthamia occidentalis S. K. Harris, Mrs. C. M. Wilder 1938-9-7 879 Humboldt Bars of the Van Dusen River, above Blue Slide Comment
  HSC9818  Festuca arundinacea D. J. McVean 1965-5-18 76 Humboldt Along Old Arcata Rd. just S of intersection with Indianola Rd. Comment
  UC53434  Festuca californica unknown 1896-6-9 Humboldt South Fork Mts. Northern Coast Ranges Comment
  CAS-BOT-BC282499  Festuca elmeri Joseph P. Tracy; H. E. Parks 1934-6-27 11045 Humboldt Horse Mountain 1524 Comment
  CAS-BOT-BC278422  Festuca idahoensis Joseph P. Tracy 1930-6-8 8729 Humboldt Northern Coast Ranges. Kneeland Prairie 762 Comment
  RSA121314  Festuca idahoensis H. S. Yates 1936-6-17 5697 Humboldt Lower N.W. slope of Buck Mountain 793 Comment
  CAS-BOT-BC278813  Festuca occidentalis J. P. Tracy 1900-5-22 796 Humboldt Immediate vicinity of Eureka 152 Comment
  HSC75355  Festuca occidentalis J. O. Sawyer, M. A. Ericksen 1980-7-18 3644 Humboldt Along FS Rd. 10N02, S of Middle Fork of Mill Creek Comment
  UC1145211  Festuca occidentalis Joseph P. Tracy 1936-7-28 15019 Humboldt Lake Prairie Bald Mountain 1066 Comment
  UC1152013  Festuca occidentalis Joseph P. Tracy 1951-6-26 19557 Humboldt Snow Camp Comment
  UC71030  Festuca occidentalis Joseph Burtt Davy and Walter C. Blasdale 1899-6-19 5653 Humboldt Hoopa Mt. Comment
  SEINET11683172  Festuca rubra K. S. Erdman 1970-1 4812 Humboldt Gold Bluff Beach about 3 mi NW of Berry Glen and US 101 (Redwood NP) Comment
  HSC58702  Festuca subulata Griswold, Butler 1979-7-11 7033 Humboldt Near Snow Camp Lake, close to the town of Willow Creek. 1393 Comment
  UC1056065  Festuca subuliflora J. I. Mallory 1955-2-22 115 Humboldt 1 mi n Luke Prairie Quad. (Quad 29-B-2); Peavine Ridge 701 Comment
  HSC18622  Fragaria chiloensis D. B. Bader 1963-2-17 14 Humboldt Second of the Clam Beach Lagoons W of Hwy. 101 Comment
  SEINET4090923  Fragaria chiloensis O. M. Clark 1932-1 702 Humboldt North Eureka. Comment
  HSC32950  Fragaria vesca Thomas W. Nelson, James Nelson 1973-5-28 959 Humboldt McKeown Ranch N of Dinsmore Comment
  HSC72700  Fragaria vesca Gail Newton 1980-6-24 570 Humboldt Near Ladder Rock 1570 Comment
  UC1949135  Fragaria vesca subsp. californica Barbara Ertter with Thomas J. Delendick 1987-5-16 6933 Humboldt 3 mi E of Berry Summit on Hwy 299, ca 20 airmiles E of Arcata; on S side of road above Willow Creek Comment
  HSC44599  Fragaria virginiana Brad Klipfel 1973-6-10 105 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  BLMAR243  Frangula californica subsp. californica Jennifer Anthony-Wheeler 1997-7-24 243 Humboldt Lacks Creek, growing beside rd with ceanothus & rubus 1219 Comment
  CAS-BOT-BC53400  Frangula californica subsp. occidentalis Joseph P. Tracy 1941-9-4 17012 Humboldt Willow Creek Canyon, along Trinity Highway 609 Comment
  HSC72613  Frangula californica subsp. occidentalis J. P. Smith 1977-7-3 9261 Humboldt Six Rivers National Forest. FS Rd. 13N01, 3 mi. from its junction with Hwy. 36 549 Comment
  CAS-BOT-BC59994  Frangula purshiana Joseph P. Tracy 1948-8-15 18152 Humboldt Trinity Summit. On ridge 2 mi. e. of Grove's Prairie. 1524 Comment
  SEINET11248085  Frangula purshiana W. D. Billings 1940-6-28 1354 Humboldt 1/4 mile N. of Trinidad Comment
  SBBG4630  Frangula purshiana subsp. purshiana M. J. Cody 1938-7-10 Humboldt near Trinidad Comment
  CAS-BOT-BC217693  Fraxinus latifolia M. S. Jussel 1931-5-1 s.n. Humboldt Sylvandale, 8 mi. N of Garberville Comment
  CAS-BOT-BC136031  Fritillaria affinis Doris K. Kildale 1925-4-1 s.n. Humboldt Hungry Hollow near Korbel Comment
  POM169380  Fritillaria affinis Joseph P. Tracy 1901-4-26 1045 Humboldt Immediate vicinity of Eureka; Humboldt Hill 0 Comment
  HSC15546  Fritillaria affinis F. B. Plett 1963-5-15 49 Humboldt 1.5 mi. N of Trinidad along Old Hwy. 101 Comment
  UC1539972  Fritillaria affinis Joseph P. Tracy 1910-4-24 3122 Humboldt Ocean Beach at Humboldt Bay Ocean Beach; Northern Coast Region, Humboldt Bay, Ocean Beach Comment
  RSA176509  Fritillaria purdyi Doris K. Kildale 1926-3-21 1575 Humboldt Kneeland Prairie Comment
  RSA46688  Fritillaria purdyi Doris K. Kildale 1938-6-5 15397 Humboldt Horse Mountain Comment
  CAS-BOT-BC422450  Fumaria officinalis Joseph P. Tracy 1949-4-1 18277 Humboldt Eureka 30 Comment
  HSC100645  Galium Carl C. Marshall Jun 1886 13 Humboldt Pilot Creek. Comment
  RSA275379  Galium Thomas W. Nelson, J. Nelson 1976-5-10 2466 Humboldt Besides S.R. 191 just N of its jct with S.R. 70. Comment
  HSC32078  Galium ambiguum subsp. ambiguum D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5596 Humboldt Mt. Lassic and two smaller peaks to immediate E 1768 Comment
  HSC72984  Galium ambiguum subsp. siskiyouense M. A. Baker 1980-7-11 2773 Humboldt Near Red Mtn. 1341 Comment
  HSC73541  Galium aparine Gail Newton 1980-7-14 1477 Humboldt Near Last Chance Ridge. 1219 Comment
  UC416634  Galium bolanderi Harley P. Chandler 1901-6-12 1452 Humboldt Bluff Creek North Coast Ranges, Klamath River 304 Comment
  UC198660  Galium divaricatum Joseph P. Tracy 1916-6-19 4730 Humboldt Alder Point Northern Coast Ranges 152 Comment
  JEPS6697  Galium muricatum W. L. Jepson 1932-7-30 16454 Humboldt Bull Creek Comment
  HSC36248  Galium muricatum Thomas W. Nelson, Jane P. Nelson 1976-2-21 2243 Humboldt Beside the Hoopa-Redwood Valley Rd., 2.5 mi. W of Hoopa Comment
  HSC39794  Galium trifidum Peter Sorensen 1976-8-8 Humboldt King Salmon 0 Comment
  SD88387  Galium trifidum subsp. columbianum Darley F. Howe 1972-6-30 Humboldt Trinidad Comment
  UC169032  Galium triflorum Joseph P. Tracy 1908-6 2862 Humboldt opposite Buck Mountain; Northern Coast Ranges, valley of Van Duzen River 762 Comment
  BLMAR268  Gamochaeta ustulata Jennifer Anthony-Wheeler 1999-6-16 268 Humboldt Headwaters Forest Reserve, Disturbed or wasted areas 463 Comment
  CAS-BOT-BC303391  Gamochaeta ustulata Joseph P. Tracy 1936-5-30 14834 Humboldt Near Samoa, on Humboldt Bay 6 Comment
  CAS-BOT-BC200578  Garrya buxifolia Carl B. Wolf 1927-8-28 1169 Humboldt Lord Ellis Road to Blue Lake, 9 mi. from Willow Creek, 2 mi. from summit Comment
  HSC41276  Garrya buxifolia Brad Klipfel 1974-6-25 430 Humboldt Horse Mtn. Comment
  CAS-BOT-BC188540  Garrya elliptica Alice Eastwood 1907-4-21 18 Humboldt Port Trinidad Comment
  HSC22830  Garrya elliptica Gene S. Van Horn 1963-1-5 35 Humboldt On W.M. Lanphere's ranch 9 Comment
  UC1550379  Garrya elliptica Gerald V. Dahling Jun 1973 1229 Humboldt about 10 mi n Trinidad (along Highway 101) Comment
  UC1585366  Garrya elliptica R. Raiche, K. Zadnik, and H. Forbes 1989-10-2 19 Humboldt w of Eureka (0.5 km s of Hwy 255, on New Navy Base Rd on North Split of Samoa Peninsula); Samoa Peninsula 10 Comment
  CAS-BOT-BC182146  Garrya fremontii Doris K. Kildale 1929-4-25 7434 Humboldt McDowell Butte - Kneeland Prairie 914 Comment
  LA40291  Garrya fremontii Carl B. Wolf; 1930-10-24 1762 Humboldt along Klamath River, 1 mi. above the mouth of Slate Creek 243 Comment
  UCD121142  Garrya fremontii George W. Jordan 1922-11-18 s.n. Humboldt Showers Pass. Comment
  CAS-BOT-BC282613  Gastridium phleoides L. R. Abrams 1916-7-11 6025 Humboldt Mouth of Grizzly Creek on Van Duzen River Comment
  UCD66582  Gastridium phleoides P. B. Kennedy 1923-8-5 26 Humboldt West fork of Eel River between Phillipsville and Garberville. Comment
  UC1103735  Gastridium ventricosum Joseph P. Tracy 1934-7-6 13663 Humboldt Iaqua; North Coast Ranges, Iaqua 609 Comment
  UC902050  Gaultheria ovatifolia Joseph P. Tracy 1949-8-11 18456 Humboldt Snow Camp 1432 Comment
  CAS-BOT-BC58905  Gaultheria shallon Carl B. Wolf 1930-10-30 1043 Humboldt Old Coast Road, 4 miles south of Thorn 304 Comment
  HSC23125  Gaultheria shallon G. M. Nordstrom 1966-4-24 17 Humboldt Kneeland-Maple Creek Rd., near jct. with Korbel rd. Comment
  HSC7806  Gaultheria shallon A. E. Inman 1962-5-25 Humboldt Mad River, Lindsay Creek jct., N bank Comment
  HSC7813  Gaultheria shallon D. B. Bader 1963-4-1 48 Humboldt Second of the Clam Beach lagoons, W of Hwy. 101, E bank of the lagoon Comment
  POM318846  Gaultheria shallon Patricia Wilder 1968-8-22 4422 Humboldt Coastal rain forest 7 miles S of Ferndale on Mattole Road, N of Cape Mendocino and Capetown, Mt. Range: Bear River Ridge; Drainage Area: Oil Creek to Pacific. 549 Comment
  RSA175205  Gaultheria shallon R. F. Thorne 1957-9-3 19026 Humboldt Patrick's Point State Park. Comment
  RSA232641  Gaultheria shallon Larry E. DeBuhr, Gary D. Wallace 1972-5-22 607 Humboldt About 25 miles north of Arcata on the south end of Big Lagoon. Comment
  HSC55224  Gayophytum diffusum subsp. parviflorum G. L. Clifton, Griswold 1979-8-2 12402 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  RSA46779  Gayophytum diffusum subsp. parviflorum Doris Kildale Gillespie 1937-8-12 15266 Humboldt South Fork Mountain. Comment
  UC162343  Gayophytum diffusum subsp. parviflorum Joseph P. Tracy 1911-7-10 3491 Humboldt Willow Creek Northern Coast Ranges, valley of Trinity River (river bar at mouth) 152 Comment
  POM247167  Gentiana sceptrum Joseph P. Tracy 1927-8-22 8338 Humboldt Bald Mountain, near High Prairie. 1067 Comment
  RSA46721  Gentiana sceptrum Doris K. Kildale 1937-8-26 15344 Humboldt Christmas Prairie Comment
  HSC23999  Geranium bicknellii Tim Baroni 1971-7-6 125 Humboldt 15 mi. S of Ferndale on Mattole Rd. Comment
  UC165804  Geranium carolinianum J. P. Tracy 1901-6-23 1186 Humboldt immediate vicinity of Eureka 0 Comment
  CDA43207  Geranium molle Richard R. Halse 2015-3-26 9382 Humboldt Eureka; by a Texaco station near 3543 Broadway St. ((U.S. Highway 101) and its intersection with McCullens Ave. Comment
  UC1197395  Geranium molle Joseph P. Tracy 1911-7-9 3463 Humboldt near Willow Creek; Northern Coast Ranges, Valley of Trinity River 152 Comment
  UC164809  Geranium molle Joseph P. Tracy 1906-5-6 2436 Humboldt near Hydesville; Northern Coast Region 60 Comment
  RSA600894  Geranium molle Louis C. Wheeler 1959-8-2 7622 Humboldt Shelter Cove. Comment
  RSA0029455  Geranium oreganum Volney Rattan 1878-06 s.n. Humboldt North of Redwood Creek. Comment
  HSC73773  Gilia capitata Gail Newton 1980-7-11 1328 Humboldt Near Red Mtn. 1341 Comment
  POM188372  Gilia capitata Marcus E. Jones 1931-6-16 s.n. Humboldt Junction East of Arcata Comment
  RSA84895  Gilia capitata H. M. Pollard 1944-9-8 s.n. Humboldt Orleans Mountain 1524 Comment
  HSC40301  Gilia capitata subsp. capitata Thomas W. Nelson, Jane P. Nelson 1976-7-1 2900 Humboldt Along ridge N of Bear Creek 1463 Comment
  HSC95545  Gilia millefoliata Andrea Pickart 2002-5-13 101 Humboldt Lanphere Dunes Unit, Humboldt Bay National Wildlife Refuge 0 Comment
  UCD117850  Gilia millefoliata Linda M. Barker 1976-6-1 1549 Humboldt 3 miles west of Arcata. Comment
  POM318534  Glehnia littoralis subsp. leiocarpa Patricia Wilder 1968-8-22 4418 Humboldt County campground on beach west of Ferndale off Centerville Road. 8 Comment
  HSC76569  Glyceria elata Teresa Prendusi 1981-7-24 496 Humboldt Near Whiteys Peak 1585 Comment
  HSC99484  Glyceria elata K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-14 143 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
  UC187282  Glyceria elata Joseph P. Tracy 1911-7-7 3372 Humboldt 3 mi nw Willow Creek junction with Trinity River (near Beebe's Ranch); Northern Coast Ranges 914 Comment
  HSC53977  Gnaphalium palustre Griswold, Butler 1979-7-11 7051 Humboldt Near Twin Lakes, close to the town of Willow Creek 1417 Comment
  CAS-BOT-BC302535  Gnaphalium palustre Doris K. Kildale 1925-8-17 1242 Humboldt Waterdog Lake, Trinity Summit 1828 Comment
  RSA249512  Gnaphalium palustre R. F. Thorne, Percy C. Everett 1965-8-7 35227 Humboldt Samoa Peninsula. 3 Comment
  HSC55277  Goodyera oblongifolia Overton, Butler 1979-8-2 12685 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  UC1196436  Goodyera oblongifolia Edith and Ethel Tracy 1900-7-31 910 Humboldt opposite Eureka (Ocean Beach at Samoa); Samoa, Ocean Beach Comment
  UC13522  Goodyera oblongifolia Chesnut and Drew 1888-8-1 Humboldt Grouse Creek Comment
  SEINET11835895  Grindelia camporum var. camporum J. P. Tracy 1947-1 17941 Humboldt 4 mi S of Garberville, Smith Point bridge Comment
  CAS-BOT-BC304752  Grindelia hirsutula H. E. Parks; S. T. Parks 1930-9-14 0773 Humboldt North shore of Big Lagoon Comment
  HSC38496  Grindelia hirsutula R. Sutherland 1976-10-31 1 .311076 Humboldt Disturbed road edge of county road 290 Comment
  HSC95525  Grindelia hirsutula Andrea Pickart 2002-7-19 184 Humboldt Arcata Marsh at Jolly Giant Creek mile .1 10 Comment
  JEPS2620 Image available Grindelia hirsutula H. N. Bolander 1860-1 6493 Humboldt seashore near Big Flat; ; Near Big Flat, Humboldt Co. Comment
  JEPS93180  Grindelia hirsutula Margriet Wetherwax and Kevin Downing 1993-8-9 2458 Humboldt Eureka Slough Humboldt Bay (s side, near Bayside Rd. and Myrtle Marsh, at end of road to church, on e side of bay, just n of Eureka) 5 Comment
  RSA125369  Grindelia hirsutula Peter H. Raven, Richard Snow 1958-7-21 13659 Humboldt Cape Mendocino Comment
  UC1347201  Grindelia hirsutula John Thomas Howell 1937-7-31 13720 Humboldt salt marsh bordering Humboldt Bay at Arcata Arcata (region of type locality) Comment
  UC199436  Grindelia hirsutula Joseph P. Tracy 1938-7-15 16075 Humboldt Mouth of Eel River 3 Comment
  UC774622  Grindelia hirsutula Carl B. Wolf 1937-9-12 Humboldt 1 mi s Arcata (on road to Eureka); Humboldt Bay 3 Comment
  HSC97993  Hackelia bella Cara Witte 2007-7-9 461 Humboldt Along Forest Service Road 4N32. 1/4 mile west of intersection with 5N04 1508 Comment
  UC582620  Hackelia setosa Joseph P. Tracy 1937-7-24 15510 Humboldt 2 mi se of Devil's Hole; Trinity Summit 1584 Comment
  HSC58333  Hastingsia alba Overton, Butler 1979-8-2 12636 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  HSC102526  Hastingsia alba M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-28 1513 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1106 Comment
  HSC56959  Hastingsia serpentinicola Overton, Butler 1979-7-23 9473 Humboldt Near Horse Mtn. Creek, close to the town of Willow Creek 1326 Comment
  UC630633  Hedera helix Joseph P. Tracy 1939-1-22 16185 Humboldt on Van Duzen R. Blue Slide 91 Comment
  RSA12428  Helenium bigelovii C. B. Wolf 1934-7-2 5866 Humboldt At small lake at Snow Camp (Mtns E of Korbel) 1372 Comment
  CAS-BOT-BC306618  Helenium bigelovii Henry M. Pollard 1947-8-31 s.n. Humboldt Klamath River bar nr. Woodson's placer mine, Orleans region Comment
  SD42503  Helenium bolanderi Carl B. Wolf 1937-8-10 9089 Humboldt Big Lagoon, bog at state park. Comment
  HSC25071  Heliotropium curassavicum var. oculatum R. W. Becking 1970-10-3 Humboldt Stone Lagoon near Orick Comment
  SEINET4170660 Image available Hemicarpha aristulata Unknown 1931-9-7 9650 B Humboldt Trinity river Valley, at Willow Creek 152 Comment
  RSA255766  Hemitomes congestum Gary D. Wallace, S. Carlquist 1972-6-30 1102 Humboldt Prairie Crrek Redwoods Stl. Pk. near the coast. Comment
  POM160904  Hemizonia clevelandii Joseph P. Tracy 1925-7-12 7200 Humboldt Trinity River Valley, near the South Fork. Northern Coast Ranges. 305 Comment
  POM126139  Hemizonia congesta Joseph P. Tracy 1923-6-20 6338 Humboldt Near Garberville (4 miles N of it.) 122 Comment
  CAS-BOT-BC309981  Hemizonia congesta subsp. tracyi A. G. Vestal 1937-6-22 s.n. Humboldt Kneeland Prairie Comment
  HSC21508  Heracleum maximum B. R. Templeton 1962-5-15 Humboldt Hwy 101 N of Arcata Comment
  SEINET10840493  Heterocodon rariflorum Lincoln Constance 1934-6-19 Constance 915 Humboldt E OF GRASSHOPPER PEAK, BULL CREEK 2500 Comment
  SEINET10873420  Heterocodon rariflorum Chesnut CHESNUT 1888 Humboldt KNEELAND Comment
  UCSB30616  Heterotheca oregona Edwards, David 1974-8-1 Humboldt Near E. bank of Mad River north of its junction with Puter Creek, ca. 2 mi. SW of Korbel 3 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
  HSC79434  Heuchera micrantha Kenneth Clark 1981-4-5 1228 Humboldt Above S fork Dead Man's Gulch 114 Comment
  CAS-BOT-BC420724  Heuchera micrantha var. diversifolia L. R. Abrams 1918-6-16 7150 Humboldt Willow Creek Comment
  HSC57023  Hieracium albiflorum Overton, Butler 1979-7-24 9640 Humboldt Near Friday Camp, close to the town of Willow Creek. 1250 Comment
  JEPS36565  Hieracium bolanderi Joseph P. Tracy 1926-6-20 7638 Humboldt Horse Mountain Northern Coast Ranges, Horse Mountain 1524 Comment
  UC1223083  Hieracium bolanderi Joseph P. Tracy 1947-7-9 17849 Humboldt Horse Mountain 1432 Comment
  HSC58358  Hieracium greenei Overton, Butler 1979-8-2 12704 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  HSC59801  Hippuris vulgaris Clark L. Miller 1979-5-24 7155 Humboldt Clam beach ponds off Hwy. 101 N of McKinleyville Comment
  HSC61726  Hirschfeldia incana Ruby Van Deventer 1963-7-1 Humboldt Along Klamath River at Pecwan. Comment
  SEINET181175 Image available Holcus lanatus Bassett Maguire, R Maguire; CB Maguire 1934-6-8 15060 Humboldt Coolidge, Redwood Park. Comment
  UCD84982  Holcus lanatus Collector Unknown 1923-7-12 s.n. Humboldt Briceland. Comment
  SEINET13009486  Holcus lanatus Kenneth W. Parker 1930-6-12 1016 Humboldt Blocksburg. Comment
  CAS-BOT-BC149907  Holodiscus discolor Elizabeth Parsons Hawver 1915-6-1 s.n. Humboldt Carlotta 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
  OBI10161  Holodiscus discolor Carl B. Wolf 1937-9-9 9310 Humboldt North Coast Range, Wildcat Ridge, 6 3/10 mi S of Ferndale 305 Comment
  UC175631  Hordeum brachyantherum subsp. brachyantherum Joseph P. Tracy 1912-7-31 3909 Humboldt nw slope Buck Mountain (Burr Valley); Northern Coast Ranges, nw slope Buck Mountain, Burr Valley 1066 Comment
  UC926329  Hordeum brachyantherum subsp. brachyantherum A. S. Hitchcock 1915-7-13 1512 Humboldt Eureka Comment
  HSC70402  Hordeum marinum subsp. gussoneanum M. A. Baker 1980-6-7 1843 Humboldt Near Ammon Creek 732 Comment
  HSC10203  Hordeum murinum subsp. leporinum L. M. Malloy 1965-4-23 45 Humboldt Samoa 1/4 mi. NW of the corner of Thunder Rd. and The Hard Way. Comment
  UC187307  Hordeum murinum subsp. leporinum Joseph P. Tracy 1911-6-25 3243 Humboldt Eureka Northern Coast Region, Eureka 0 Comment
  HSC45256  Hordeum vulgare M. Alcasas 1978-5-27 109 Humboldt On access road to Eel River Sawmills, 0.5 mi. from Hwy. 101 30 Comment
  RSA259582  Horkelia tridentata subsp. flavescens D. E. Anderson 1972-6-20 s.n. Humboldt Along the Redwood Valley-Hoopa Rd. east of the summit. Comment
  UC154501  Horkelia tridentata subsp. flavescens J. Burtt Davy 1899-6-19 5629 Humboldt from Bairs to Hoopa Hoopa Mt. Comment
  HSC100885  Hosackia subpinnata Carl C. Marshall 9 Humboldt No data. Comment
  UCSB22187  Hydrocotyle ranunculoides Keefe, Joseph 1967-7-8 Humboldt East side of U.S. Highway 101, turnoff to Crannell Road, north of Eureka 6 Comment
  UC35519  Hydrophyllum occidentale W. C. Blasdale 1896-6-6 Humboldt McBride's Comment
  UC24110  Hydrophyllum tenuipes Joseph P. Tracy May 1901 1263 Humboldt Redwood Belt; North Coast Ranges 457 Comment
  UC1103553  Hypericum anagalloides Joseph P. Tracy 1935-7-25 14229 Humboldt Corral Prairie Trinity Summit, Corral Prairie 1584 Comment
  POM146240  Hypericum formosum var. scouleri J. B. Feudge 1923-7-23 153 Humboldt Trinidad Comment
  UC1198400  Hypericum perforatum Joseph P. Tracy 1934-7-9 13346 Humboldt Dobbyn Creek 152 Comment
  BLMAR223  Hypericum perforatum Jennifer Anthony-Wheeler 1996-7-11 223 Humboldt N. Dobbyn creek 1005 Comment
  CAS-BOT-BC401227  Hypericum perforatum Doris K. Kildale 1927-7-3 3655 a Humboldt Willow Creek Flat 152 Comment
  CAS-BOT-BC401230  Hypericum perforatum J. H. Thomas 1949-6-12 899 Humboldt Near Klamath River, about 1/2 mile north of town of Orleans Comment
  RSA47107  Hypericum perforatum Doris K. Kildale 1925-6-20 711 Humboldt coast above Big Lagoon Comment
  UCD110388  Hypericum perforatum subsp. perforatum A. H. Murphy 1947-6-19 s.n. Humboldt Dobbins Creek bridge, on Alderpoint-Blocksburg road. Comment
  UC164814  Hypochaeris glabra J. P. Tracy 1903-8-9 1947 Humboldt Eureka 0 Comment
  HSC39463  Hypochaeris glabra J. P. Smith, J. O. Sawyer 1976-5-2 Humboldt S. R. 96, 4.9 mi. N of its junction with S.R. 299 122 Comment
  CAS-BOT-BC311436  Hypochaeris radicata Ashley C. Browne 1936-6-10 s.n. Humboldt Patrick's Point State Park Comment
  CAS-BOT-BC123494  Iliamna latibracteata Doris K. Kildale 1926-7-5 2312 Humboldt Prairie Creek, near Davidson's. Comment
  CAS-BOT-BC206845  Iliamna latibracteata C. B. Wolf 1931-8-28 2367 Humboldt Redwood Highway, 3 miles north of Orick, Davison's Ranch on Prairie Creek 60 Comment
  HSC35707  Iliamna latibracteata Thomas W. Nelson, B. Reinhardt 1975-7-30 2091 Humboldt Grouse Creek side of Last Chance Ridge. Comment
  RSA46818  Ipomopsis aggregata subsp. formosissima Doris K. Kildale 1925-2-15 1157 Humboldt Trinity Summit. Comment
  RSA366776  Iris Anonymous 1941-6-25 s.n. Humboldt Between Garberville [Garbervill Quad] and Pepperwood [Redcrest Quad] Comment
  HSC47580  Iris douglasiana Sheila Logan 1978-4-10 176 Humboldt Redwood Park behind HSU campus Comment
  UC1103024  Iris douglasiana Joseph P. Tracy 1931-6-7 9574 Humboldt Eureka 30 Comment
  JEPS17227  Iris douglasiana Joseph P. Tracy 1939-6-17 16311 Humboldt vicinity Carlotta 30 Comment
  SEINET12056852  Iris douglasiana H. P. Chandler 1901-1 1262 Humboldt Redwood Belt 457 Comment
  UC702924  Iris douglasiana Alice Eastwood and John Thomas Howell 1937-6-23 4845 Humboldt 5 mi from Kneeland (on road to Yager) Comment
  UC1134714  Iris macrosiphon R. Stahelin 1933-6-24 Humboldt Casper Eureka Quad. (e of Camp 19) 91 Comment
  BLMAR624  Iris purdyi Jennifer Wheeler 2011-6-1 624 Humboldt Lacks Creek, Bair rd near pickle springs 609 Comment
  SEINET3876005  Iris purdyi Thomas Nelson, Jane P. Nelson; James Nelson 1975-6-14 1907 Humboldt At end of road to Pine Mountain.; 0 Comment
  UC1174772  Iris purdyi L. W. Lenz and E. K. Balls 1952-5-11 17191 Humboldt 5.2 mi n Harris (on road to Zenia, 10.1 mi sw from Trinity-Humboldt Co. line) Comment
  HSC45311  Iris tenax subsp. klamathensis R. York 1978-5-11 165 Humboldt Along logging road above Orleans 640 Comment
  JEPS88855  Iris tenax subsp. klamathensis Carol A. Wilson 1992-5-15 92 -ph20 Humboldt just s Orleans (along Icesee Road from where it leaves Hwy 96 to top of hill) Comment
  HSC35034  Iris tenuissima Thomas W. Nelson, James Nelson 1975-5-24 1856 Humboldt McKeown Ranch, N of Dinsmore Comment
  HSC97561  Iris tenuissima subsp. tenuissima Cara Witte 2007-6-1 162 Humboldt Horse Mountain Botanical Area. Along Forest Service 6N38. 1311 Comment
  RSA273404  Isatis tinctoria J. P. Smith, J. O. Sawyer 1974-6-2 7649 Humboldt Below Berry Summit on old State Route 299. 762 Comment
  JEPS93173  Isolepis cernua Margriet Wetherwax and Kevin Downing 1993-8-9 2454 Humboldt s side of slough just past Pigeon Point (e side of road, near Bayside Rd and Myrtle, e side of bay, just n of Eureka); Humboldt Bay, Eureka Slough 5 Comment
  SEINET9157642  Isolepis cernua H. E. Parks, S. T. Parks 24244 Humboldt Spruce Cove , Trinidad 61 Comment
  HSC96363  Isolepis setacea Gordon Leppig 1999-10-3 1257 Humboldt Big Lagoon Bog, Big Lagoon County Park 3 Comment
  CAS-BOT-BC340157  Jaumea carnosa Joseph P. Tracy 1939-8-6 16399 Humboldt Big Lagoon 6 Comment
  CHSC31324  Juncus balticus subsp. ater Mark Stopher 1980-6-4 92 Humboldt Near Hwy 101 bridge over Elk River, s of Eureka. 1 Comment
  HSC13985  Juncus balticus subsp. ater C. B. Wolf 1927-8-22 772 Humboldt Big Lagoon Comment
  HSC44317  Juncus bolanderi Thomas W. Nelson, Jane P. Nelson 1977-9-3 3735 Humboldt Logging road to Pine Mtn., E of Pine Mtn. 1463 Comment
  UCD141361  Juncus bufonius Linda M. Barker 1976-6-1 1551 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  POM208990  Juncus bufonius Lincoln Constance 1934-6-12 862 Humboldt S Fork of Eel River, N end of Dyerville bridge, Humboldt Redwood Park. 46 Comment
  HSC102141  Juncus confusus M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 1046 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  UC183782  Juncus covillei var. obtusatus Joseph P. Tracy 1908-7-14 2871 Humboldt opposite Buck Mountain (Dinsmore's Ranch); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  JEPS63830  Juncus effusus subsp. pacificus Lincoln Constance 1934-6-25 924 Humboldt 4 mi n Dyerville (and of n boundary of Humbolt Redwood Park, on Redwood Highway); South Fork Eel River, Bull Creek Region, Englewood Comment
  RSA53821  Juncus ensifolius Henry M. Pollard 1945-8-26 s.n. Humboldt Between Orleans and Camp Creek. Klamath River Canyon. Comment
  CHSC105160  Juncus lescurii Peter F. Zika 2008-11-3 24275 Humboldt Sunny meadow just above salt marsh, with Juncus breweri, Festuca arundinacea, Baccharis, Ammophila, mouth of Elk River NW of Route 101 bridge, 2 air km S of Eureka; North Coast (NCo) 2 Comment
  HSC96370  Juncus lescurii Gordon Leppig 1999-10-3 1259 Humboldt Big Lagoon Bog, Big Lagoon County Park 3 Comment
  HSC99314  Juncus phaeocephalus C. B. Wolf 1927-8-22 791 Humboldt Big Lagoon Comment
  RSA168869  Juncus phaeocephalus var. phaeocephalus Joseph P. Tracy 1934-7-13 13391 Humboldt Dow s Prairie. 61 Comment
  RSA12427  Juncus saximontanus Carl B. Wolf 1934-7-2 5867 Humboldt Small lake at Snow Camp (Mountains east of Korbel). 1372 Comment
  RSA42044  Juncus xiphioides H. C. Cantelow 1936-8-28 1641 Humboldt 4 miles W of Dinsmore Ranch. Comment
  CAS-BOT-BC235877  Keckiella corymbosa Joseph P. Tracy 1920-8-15 5360 Humboldt Klamath River, at Bluff Creek 152 Comment
  CAS-BOT-BC235884  Keckiella corymbosa H. L. Mason 1928-7-14 4900 Humboldt East Fork of the Eel River near Garberville Comment
  HSC73764  Keckiella corymbosa Gail Newton 1980-7-23 1743 Humboldt Near Packsaddle Ridge 1463 Comment
  UCR136653  Keckiella corymbosa H. M. Pollard 1948-8-12 s.n. Humboldt Near mouth of Pearch Creek, near Orleans 366 Comment
  UC50452  Koeleria macrantha Joseph Burtt Davy and Walter C. Blasdale 1899-7-30 6189 Humboldt Bear River Ridge Comment
  UC1196124  Kopsiopsis strobilacea Joseph P. Tracy 1935-7-28 14323 Humboldt Trinity Summit. Head of Devil's Hole. 1828 Comment
  UC1051588  Lactuca saligna Joseph P. Tracy 1946-8-25 17649 Humboldt Alton, Fortuna 15 Comment
  UC668198  Lagophylla ramosissima Joseph P. Tracy 1938-7-4 15993 Humboldt Valley of South Yager Creek 762 Comment
  UCLA55474  Lamium amplexicaule Joseph P. Tracy 1923-6-10 6261 Humboldt Eureka; Northern Coast Ranges 0 Comment
  HSC78960  Lamium purpureum L. P. Janeway, K. Berg 1984-4-11 725 Humboldt N Spit of Humboldt Bay, turnout along Samoa Rd., across from boat ramp just N of Coast Guard Station 3 Comment
  CAS-BOT-BC337868  Lapsana communis Henry M. Pollard 1946-8-26 s.n. Humboldt Between Orleans and Camp Creek, Klamath River Canyon Comment
  JEPS10075  Lasthenia californica subsp. californica Joseph P. Tracy 1932-6-26 10265 Humboldt Valley of South Yager Creek 762 Comment
  JEPS9904  Lasthenia californica subsp. californica Lincoln Constance 1934-6-3 809 Humboldt road from High Rock (on Redwood Hwy 1 mi n of Dyerville) to Horse Prairie; South Fork Eel River, Bull Creek Region Comment
  UC582761  Lasthenia californica subsp. californica Joseph P. Tracy 1932-6-26 10265 A Humboldt valley South Yager Creek 762 Comment
  JEPS55332  Lathyrus brownii W. L. Jepson 1932-7-30 16455 Humboldt bank of Bull Creek Bull Creek 106 Comment
  JEPS55323  Lathyrus lanszwertii var. tracyi Joseph P. Tracy 1926-5-2 7432 Humboldt near South Fork; Northern Coast Ranges, Trinity River Valley 182 Comment
  UCD106379  Lathyrus littoralis Roman Gankin 1965-8-6 552 Humboldt 1.3 miles south of Samoa, Samoa Peninsula. Comment
  RSA239724  Lathyrus littoralis Larry E. DeBuhr, Gary D. Wallace 1973-5-22 1152 Humboldt In sand at beach at Big Lagoon. Comment
  UC15357  Lathyrus torreyi H. N. Bolander 1867-1 6506 Humboldt Shelter Cove Comment
  UCD106657  Lathyrus torreyi K. Esau 1934-5-8 s.n. Humboldt Redwood Highway near Scotia. Comment
  BLMAR644  Lathyrus torreyi Jennifer Wheeler 2011-7-7 644 Humboldt Lacks Creek, Pine Ridge Road, spur at Stormy Saddle 1097 Comment
  UC1222402  Lathyrus torreyi Joseph P. Tracy 1943-7-18 17430 Humboldt East Fork of Willow Creek, Willow Creek Canyon, along Trinity Highway Willow Creek Canyon Comment
  UC1013059  Lathyrus vestitus C. L. Hitchcock 1948-6-7 19085 Humboldt ca 15 mi e Blue Lake (along Highway 299) Comment
  UCD106539  Lathyrus vestitus var. ochropetalus C. L. Hitchcock 1949-6-7 19081 Humboldt Redwood highway ca. 15 miles N of Garberville. Comment
  HSC24421  Lavatera cretica Wilbur Peterson 1972-5-9 717 Humboldt Samoa peninsula, along road leading to Samoa Cookhouse Comment
  CAS-BOT-BC326000  Layia carnosa Peter H. Raven 1963-5-15 18370 Humboldt Dunes above coast, Lanphere Ranch just W of Mad River Slough, near Arcata. Comment
  HSC39959  Layia carnosa Linda M. Barker 1976-4-13 1377 Humboldt Lanphere-Christensen Dunes, 3 mi. W of Arcata Comment
  RSA0008478  Layia carnosa Joseph P. Tracy 1946-6-2 17555 Humboldt Fairhaven, in sand dunes of the Samoa Peninsula Comment
  CAS-BOT-BC534635  Lemna minor Henry M. Pollard 1956-10-13 2 Humboldt near Orleans Comment
  UCSC000838  Leontodon nudicaulis subsp. taraxacoides H. S. Reed 1941-7-26 s.n. Humboldt Common weed near Trinidad Trinidad Comment
  UC1223216  Leontodon saxatilis Joseph P. Tracy 1948-7-11 18072 Humboldt at Lack Pond Comment
  HSC98043  Lepidium campestre Cara Witte 2007-7-17 538 Humboldt Along National Forest 1. 1 mile south of Brays Opening. 1447 Comment
  CAS-BOT-BC226526  Leptosiphon acicularis Doris K. Kildale 1926-4-25 1800 Humboldt Willow Creek Flat 152 Comment
  POM193006  Leptosiphon androsaceus H. E. Parks, Joseph P. Tracy 1930-5-25 0794 Humboldt Vicinity of Bridgeville, Laribee Valley Comment
  RSA135357  Leptosiphon nuttallii Volney Rattan 1878-1 s.n. Humboldt [no additional locality data provided] Comment
  HSC96631  Leptosiphon nuttallii subsp. nuttallii Thomas W. Nelson, Dick Brummitt, Barbara Ertter 2004-7-4 9284 Humboldt Along Bald Hills Rd. near French Camp, 1.5 mi. from Johnson Rd. and Elk Camp fire station Comment
  CAS-BOT-BC334615  Leucanthemum vulgare L. R. Abrams 1916-7-18 6076 Humboldt Between Arcata and Trinidad Comment
  CHSC32811  Leucanthemum vulgare Lora Anderson 1981-4-26 8 Humboldt Ch. 4 mi ne of Arcata, 200 yds n of Hwy. 299. 60 Comment
  HSC39167  Leucanthemum vulgare D. E. Anderson, J. P. Smith 1971-6-28 - 1236 Humboldt Along Mad River, 2 mi. S of Blue Lake. Comment
  HSC66273  Lewisia cotyledon var. cotyledon M. A. Baker 1980-7-24 3196 Humboldt Near Orleans Mtn. 1625 Comment
  CAS-BOT-BC444058  Lewisia cotyledon var. howellii Lincoln Constance; Reed C. Rollins 1942-5-12 2885 Humboldt Klamath-Siskiyou Region. Mouth of Bluff Creek, 6 miles northeast of Weitchpec. 152 Comment
  HSC102128  Lewisia triphylla M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 1032 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  CAS-BOT-BC283516  Leymus X vancouverensis W. R. Dudley 1899-6-1 s.n. Humboldt Eureka Peninsula Comment
  UC526794  Leymus mollis subsp. mollis Joseph P. Tracy 1927-5-1 7954 Humboldt sand dunes near Samoa (next to ocean); Northern Coast Ranges, Humboldt Bay 6 Comment
  JEPS17502  Ligusticum apiifolium J. P. Tracy 1900-10-7 971 Humboldt Eureka Comment
  JEPS17504  Ligusticum apiifolium W. L. Jepson 1902-6-30 1959 Humboldt on Hupa Rd. near Redwook Creek Comment
  UC642251  Ligusticum apiifolium Joseph P. Tracy 1930-8-3 9153 Humboldt McClellan Mt. 762 Comment
  HSC44546  Ligusticum californicum Brad Klipfel 1973-7-15 165 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC65927  Lilium bolanderi Gail Newton 1980-6-17 223 Humboldt Near Onion Mtn. 1341 Comment
  SBBG1025  Lilium columbianum H. and M. Dearing 1939-6-23 3698 Humboldt 5 mi N of Trinidad Comment
  UC175813  Lilium columbianum Joseph P. Tracy 1913-7-13 4356 Humboldt Patrick's Point Northern Coast Ranges, Patrick's Point 30 Comment
  CAS-BOT-BC508398  Lilium columbianum Ashley C. Browne 1936-6-11 s.n. Humboldt Patrick's Point State Park Comment
  UC179932  Lilium columbianum Joseph P. Tracy 1914-9-7 4617 B Humboldt 10 mi e Korbel (near the Bald Mt. House); Northern Coast Ranges 914 Comment
  HSC33260  Lilium kelloggii A. M. Montalvo, J. D. Ackerman 1974-8-1 399 Humboldt 1.0 mi. W of Kneeland Post Office on Greenwood Heights Rd. Comment
  RSA256588  Lilium occidentale Thomas W. Nelson, Doris Niles 1974-6-24 s.n. Humboldt Wiggens Ranch just west of the garbage dump. Comment
  SEINET3992036  Lilium occidentale Bassett Maguire, Ruth Maguire, C. B. Maguire 1934-1 Humboldt Comment
  UC1198243  Lilium occidentale Joseph P. Tracy 1924-9-21 6886 Humboldt Eureka; Northern Coast Ranges 0 Comment
  HSC57043  Lilium pardalinum subsp. pardalinum Overton, Butler 1979-7-24 9687 Humboldt Near Friday Camp, close to the town of Willow Creek. 1250 Comment
  HSC58026  Lilium pardalinum subsp. pardalinum G. L. Clifton 1979-7-31 11837 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  RSA46876  Lilium rubescens Doris K. Kildale 1927-7-17 s.n. Humboldt Bug Creek, Chaparral Mountain Comment
  CAS-BOT-BC133013  Lilium washingtonianum subsp. purpurascens Doris K. Kildale 1925-7-2 969 Humboldt Bug Creek, Buttes 1219 Comment
  UC176376  Lilium washingtonianum subsp. purpurascens Joseph P. Tracy 1913-7-20 4366 Humboldt ridge between Redwood Creek and Willow Creek (on Willow Creek road); Northern Coast Ranges 914 Comment
  CHSC19489  Limnanthes douglasii Norman Dennis 1965-6-11 113 Humboldt About 1/4 mile south and 1 mile east of the junction of Barry Ridge Road and the Eureka-Bridgeville county road, along Ashfield Ridge Road. About 5 miles southeast of Kneeland. 792 Comment
  HSC23110  Limnanthes douglasii Norman Dennis 1965-6-11 113 Humboldt 1/4 mi. S and 1 mi. E of the junction of Barry Ridge Rd. and the Eureka-Bridgeville county road, along Ashfield Ridge Rd. About 5 mi. SE of Kneeland 793 Comment
  UC673262 Image available Limnanthes douglasii Lincoln Constance and Reed C. Rollins 1942-5-21 3000 Humboldt two mi n Harris; Klamath-Siskiyou Region; Siskiyou Region, Humboldt Co. 762 Comment
  UC971841  Limnanthes douglasii subsp. nivea Charles T. Mason Jr. 1949-4-29 1284 Humboldt 3.3 mi n Blocksburg (along road from Harris to Bridgeville) Comment
  CHSC89511  Limnobium laevigatum Gordon Leppig; T. LaBanca 2003-3-13 1823 Humboldt Arcata, Alder Grove Pond. On south shore of wetland. UTM Zone 10, 428185 N, 410100 E. 9 Comment
  HSC83032  Limonium californicum A. L. Eicher 1985-8-17 Humboldt Marsh bordering Humboldt Bay, 0.2 mi. S of the mouth of Jacoby Creek. 1 Comment
  UC902115  Limonium californicum Joseph P. Tracy 1949-9-18 18581 Humboldt Eel River; mouth, area of salt marsh 3 Comment
  UC180237  Linanthus bicolor Joseph P. Tracy 1914-6-14 4503 Humboldt near Hydesville; Northern Coast Region 60 Comment
  UC1198537  Linanthus filipes Joseph P. Tracy 1932-6-13 10156 Humboldt Willow Creek Trinity River Valley 152 Comment
  HSC99851  Linnaea borealis subsp. longiflora T. Jimerson, J. Pageau 1979-6-12 533 Humboldt Near Hopkins Butte, close to the town of Orleans. 1036 Comment
  UC774996  Linnaea borealis var. longiflora Carl B. Wolf 1937-8-13 9265 Humboldt on new road towards Trinity Summit 12 mi e Hoopa Valley; North Coast Range, e of Hoopa Valley 1676 Comment
  RSA435732  Linum angustifolium J. P. Smith 1973-5-26 6828 Humboldt Scotia Bluffs along the Eel River near Rio Dell. Comment
  SD51257  Linum bienne Darley F. Howe 1961-8-1 348 Humboldt 9.0 miles north of Arcata on Highway 101. Comment
  UCSB13395  Linum usitatissimum Dearing, Hugh; Dearing, Margaret 1939-6-23 Humboldt 30 miles east of Arcata Comment
  HSC48978  Listera caurina Rudolf W. Becking 1979-7-15 Humboldt Fish Lake Comment
  UC302158  Listera convallarioides Joseph P. Tracy 1926-6-27 7690 Humboldt Horse Mountain Northern Coast Ranges 1219 Comment
  HSC49390  Listera cordata var. nephrophylla R. York 1979-4-21 245 Humboldt Behind the town of Korbel, Camp Bauer Comment
  RSA697654  Lithocarpus densiflorus var. densiflorus Unspecified 1936-09 s.n. Humboldt Richardson's Grove (State Park). Comment
  UC1196492  Lithophragma affine Joseph P. Tracy 1918-5-26 4944 Humboldt lower foothills towards Redwood Creek Grouse Mt.; Northern Coast Ranges, , towards Redwood Creek 762 Comment
  UC1196494  Lithophragma campanulatum Joseph P. Tracy 1932-7-18 10700 Humboldt head of Brett Hole Trinity Summit; Klamath Mountains, , head of Brett Hole 1828 Comment
  UC1199422  Logfia filaginoides Joseph P. Tracy 1921-5-30 5489 Humboldt Kneeland Prairie 762 Comment
  HSC5650  Logfia gallica J. P. Tracy 1935-5-30 13914 Humboldt Trinity River Valley at Willow Creek 152 Comment
  UC1541549  Lolium multiflorum Harold E. Parks May 1933 4305 Humboldt Spruce Cove Trinidad; Spruce Cove Comment
  HSC10308  Lolium perenne Paul Shields 1955-6-10 Humboldt Arcata, Humboldt State University campus. Comment
  HSC58408  Lolium perenne Griswold, Butler 1979-7-10 7123 Humboldt Near Board Camp Mtn., close to the town of Willow Creek. 1350 Comment
  JEPS16098  Lomatium californicum W. L. Jepson 1902-6-20 1892 a Humboldt Fort Seward Ranch Ridge (= Mail Ridge) 1219 Comment
  JEPS14213  Lomatium dasycarpum subsp. dasycarpum Joseph P. Tracy 1927-3-27 7852 Humboldt near the S. Fork Trinity R. Valley 182 Comment
  UC906634  Lomatium dasycarpum subsp. dasycarpum Joseph P. Tracy 1947-7-5 17779 Humboldt ridge top 1 mi. w. Mud Springs (Trinity Summit); Trinity Summit 1158 Comment
  HSC56225  Lomatium macrocarpum G. L. Clifton, Terry Griswold 1979-8-2 12261 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  RSA21095  Lomatium macrocarpum C. B. Wolf 1937-6-14 8823 Humboldt North Coast Range, Kneeland Prairie 823 Comment
  HSC46922  Lomatium tracyi Brad Klipfel 1974-5-27 439 Humboldt Horse Mtn. Comment
  HSC98971  Lomatium vaginatum Cara Witte 2007-6-4 193 Humboldt Cold Spring. 0.5 mile S of Titlow Hill. 1386 Comment
  UC1239545  Lonicera ciliosa Joseph P. Tracy 1936-8-7 15115 1/2 Humboldt 2 mi se Devil's Hole; Trinity Summit 1584 Comment
  CHSC19479  Lonicera involucrata var. ledebourii Gary J. Stebbins 1970-4-18 66 Humboldt Along road to Samoa 1.0 mile west of Mad River Slough bridge. 6 Comment
  HSC83836  Lonicera involucrata var. ledebourii F. R. Fosberg 1948-8-28 30053 Humboldt Dry Lagoon. Comment
  HSC89542  Lonicera involucrata var. ledebourii M. Roantree 1985-4-25 2 Humboldt E side of Trinidad Head. Comment
  JEPS25684  Lotus aboriginus P. C. Hutchison 1961-5-22 2007 Humboldt 14.3 mi e Arcata junction with U.S. Hwy. 101 (on Hwy 299) Comment
  HSC28150  Lotus aboriginus Chris Gist 1971-6-19 39 Humboldt Hwy. 299, 10 mi. E of Blue Lake. Comment
  SEINET3696853 Image available Lotus formosissimus Joseph P. Tracy 1935-6-8 13941 Humboldt Santa Clara Tract, just E of Eureka Comment
  UC1052471  Lotus formosissimus H. E. and S. T. Parks Jun 1952 24449 Humboldt Spruce Cove Trinidad 60 Comment
  HSC45023  Lotus humistratus R. Sutherland 1978-4-23 19 .23478 Humboldt Road near head of Kinsey Ridge 732 Comment
  JEPS55511  Lotus humistratus W. L. Jepson 1902-6-20 1897 Humboldt Ft. Seward Ranch Ridge (= Mail Ridge) Mail Ridge 1219 Comment
  HSC97498  Lotus micranthus Cara Witte 2007-5-21 60 Humboldt White Oak Opening. 1257 Comment
  UC1223416  Lotus purshianus var. purshianus Joseph P. Tracy 1938-7-7 16031 Humboldt Cold Springs Grouse Mountain 1524 Comment
  HSC98112  Lotus unifoliolatus var. unifoliolatus Cara Witte 2007-6-27 370 Humboldt Near Grouse Mountain. Along Forest Service Road 4N32. Near intersection with 4N32B 1516 Comment
  RSA183610  Lotus wrangelianus R. I. Bonn 1965-5-7 29 Humboldt Four mi els west of Arcata on Lanphere Rd. Comment
  HSC74666  Luina hypoleuca Gail Newton 1981-8-7 2423 Humboldt Near Bug Creek Butte 1244 Comment
  UC1193159  Luina hypoleuca P. Zinke 1950-10-9 185 Humboldt 300 yards nw summit of Kings Peak 1249 Comment
  CAS-BOT-BC201191  Lupinus Eliz. Parsons Hawver 1915-6-1 s.n. Humboldt Carlotta Comment
  UC584132  Lupinus David D. Keck and J. Clausen 1935-6-16 3392 Humboldt mouth of Little River Comment
  SEINET5736964 Image available Lupinus Lowell E. Urbatsch, Patricia B. Cox; Alan W. Lievens 1988-1 6113 Humboldt Collected in a waste area along Giuntoli Lane in Arcata. Adjacent to Eureka Sand and Gravel company and across the road from T.P. Tire Service (1265 Giuntoli Lane).; Arcata Comment
  HSC97955  Lupinus adsurgens Cara Witte, Michael Scott 2007-6-22 349 Humboldt Board Camp Mountain, jeep trail between Tri Board Camp and Fork Camp 1565 Comment
  JEPS109579  Lupinus adsurgens Dean W. Taylor 2002-9-12 18340 Humboldt ca. 0.5 mi N of Lake Prairie 1097 Comment
  RSA43866  Lupinus albicaulis var. shastensis H. M. Pollard 1947-8-9 s.n. Humboldt Roadside west of Orleans Comment
  HSC60073  Lupinus albifrons var. flumineus M. A. Baker 1978-5-6 498 Humboldt 2 km. W of Weitchpec along Klamath River. Comment
  HSC48868  Lupinus andersonii Brad Klipfel 1973-6-10 62 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  SEINET5327650  Lupinus arboreus J. Tracy 1910-5-8 3134 Humboldt Immediate vicinity of Eureka 152 Comment
  RSA44063  Lupinus arboreus var. arboreus W. Bridge Cooke 1942-7-4 16358 Humboldt Roadside along Highway 101, 4 miles south of Trinidad. Comment
  HSC95546  Lupinus bicolor Andrea Pickart 2002-5-20 106 Humboldt Manila Dunes, near Manila Community Services District treatment area 15 Comment
  UC1197275  Lupinus bicolor Joseph P. Tracy 1939-4-18 16219 Humboldt Garberville 152 Comment
  JEPS82235  Lupinus lapidicola Roger Raiche 1983-7-19 30538 Humboldt King Range, Saddle Mountain, King Ridge Trail Rd. Saddle Mountain; King Range, , King Ridge Trail Rd. 853 Comment
  UCSB3308  Lupinus latifolius Keator, Glenn 1958-6-18 Humboldt Dyerville Honeydew Road Comment
  HSC14854  Lupinus latifolius subsp. latifolius R. Spellenberg 1965-6-14 1132 Humboldt 6 mi. E of Freshwater on Rd. to Kneeland Comment
  JEPS65283  Lupinus latifolius var. latifolius Lincoln Constance 1934-5-29 714 Humboldt Upper Look Prairie; South Fork Eel River, Bull Creek Region 365 Comment
  UC176599  Lupinus latifolius var. latifolius Joseph P. Tracy 1913-6-20 4240 Humboldt lower foothills on its nw slope Buck Mountain; Northern Coast Ranges, lower foothills Buck Mountain 762 Comment
  RSA21447  Lupinus luteolus Carl B. Wolf 1937-8-12 9211 Humboldt 20 mi. north of Bridgeville on road to Kneeland. 457 Comment
  UC865132  Lupinus microcarpus var. densiflorus C. L. Hitchcock, J. S. Martin 1939-7-13 5423 Humboldt on Arcata-Reading Hiway 65 mi e Arcata; e of Arcata 457 Comment
  JEPS65425  Lupinus polyphyllus Kate Jared Stirring 1923-6-5 Humboldt Arcata Comment
  SEINET12165538  Lupinus propinquus F. H. Utech 1986-1 86 -386 Humboldt 0.5 mi NNW on Kings Peak Road (Humboldt County C4A) from junction with Shelter Cove Road 600 Comment
  HSC45642  Luzula comosa Diane L. Reed 1978-4-22 17 Humboldt Tish Tang Campground, 5 mi. N of Willow Creek on Hwy. 96 Comment
  HSC71599  Luzula comosa M. A. Baker 1980-6-26 2412 Humboldt Near Sims Creek 610 Comment
  UC2983  Luzula comosa Harley P. Chandler May, 1901 1159 Humboldt Humboldt Bay North Coast Ranges, Humboldt Bay Comment
  JEPS121643  Luzula multiflora Jennifer Buck, Danielle Roach 2009-8-19 Humboldt Kerlin Fen, South Fork Mountain. Sloping fen on schist, NE aspect. Blake Mountain quadrangle. SFM06A Comment
  HSC14138  Luzula parviflora H. E. Parks, S. T. Parks Jun 1952 22446 Humboldt Bishop Pine Lodge, Trinidad Comment
  UC1152125  Luzula parviflora Joseph P. Tracy 1930-7-17 8973 Humboldt near McKay camp; South Fork Mountain, near McKay Camp 1676 Comment
  UC524369  Lycopodiella inundata Ira L. Wiggins 1932-7-19 5893 Humboldt low swamp at s end Big Lagoon Comment
  UC1198266  Lysichiton americanus Joseph P. Tracy 1947-5-24 17690 Humboldt Big Lagoon 9 Comment
  UC179917  Lysichiton americanus Joseph P. Tracy 1914-9-13 4627 Humboldt at Eureka Northern Coast Region, Eureka 0 Comment
  UC34916  Lysichiton americanus W. C. Blasdale 1896-6-4 Humboldt Eureka Comment
  RSA0023003  Lythrum Robert F. Thorne, P. C. Everett 1965-8-9 35324 Humboldt Clam Beach County Park: along highway. 3 Comment
  UC1198466  Lythrum hyssopifolia Joseph P. Tracy 1920-8-15 5380 Humboldt Klamath River at Bluff Creek, Northern Coast Ranges Bluff Creek; Northern Coast Ranges, Klamath River, Bluff Creek 152 Comment
  SEINET10473462  Madia Mary Susan Taylor 1990-8-22 Taylor 6074 Humboldt Samoa Recreation Area on Samoa Peninsula, Staging Area, Eureka. Coastal scrub in ORV area. Comment
  CAS-BOT-BC342803  Madia elegans Henry M. Pollard 1947-8-21 s.n. Humboldt Ferrian Ranch, nr. Orleans Comment
  SD88396  Madia elegans subsp. vernalis Darley F. Howe 1972-5-6 Humboldt 1.5 miles north of Phillipsville Comment
  JEPS19928  Madia gracilis Lincoln Constance 1934-5-29 711 Humboldt Upper Look Prairie South Fork Eel River, Bull Creek Region 365 Comment
  NY214972  Madia gracilis subsp. pilosa J. P. Tracy 1931-6-28 9588 Humboldt Buck Mountain, lower foothills of its northwest slope 762.0 Comment
  RSA11144  Madia minima C. B. Wolf 1934-7-2 5861 Humboldt Snow Camp (east of Korbel) 915 Comment
  UCD134335  Madia sativa Linda M. Barker 1976-7-5 1636 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  HSC35863  Madia sativa Thomas W. Nelson, Jane P. Nelson 1975-8-5 2131 Humboldt Along S spit of Humboldt Bay adjacent to jetty Comment
  UCD20674  Mahonia nervosa A. T. Leiser 1980-7-9 s.n. Humboldt Humboldt County, Redwood National Park, Hwy 101 reroute. Comment
  RSA13579  Maianthemum dilatatum H. E. Parks 1932-05 4289 Humboldt Bishop Pine Lodge, Trinidad. Comment
  HSC15599  Maianthemum dilatatum D. B. Bader 1963-5-1 43 Humboldt Second of the Clam Beach lagoons N end, W of Hwy. 101 Comment
  UCD139077  Maianthemum racemosum T. E. Weier 1942-5-22 s.n. Humboldt near Dyerville, Highway 101. Comment
  HSC45619  Maianthemum racemosum subsp. amplexicaule Diane L. Reed 1978-4-22 36 Humboldt Tish Tang Campground, 5 mi. N of Willow Creek on Hwy. 96 Comment
  HSC58009  Maianthemum racemosum subsp. amplexicaule G. L. Clifton 1979-7-31 11805 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  HSC70565  Maianthemum racemosum subsp. amplexicaule M. A. Baker 1980-7-23 3186 Humboldt Near Orleans Mtn. 1859 Comment
  CAS-BOT-BC511452  Maianthemum racemosum subsp. amplexicaule Mrytle Paulson 1918-4-28 s.n. Humboldt Eureka Comment
  HSC100563  Maianthemum racemosum subsp. amplexicaule Carl C. Marshall Apr 1886 128 Humboldt Damp woods. Comment
  RSA377681  Maianthemum racemosum subsp. amplexicaule W. Hutchinson s.n. Humboldt [no locality specified] Comment
  RSA554593  Maianthemum racemosum subsp. amplexicaule Walter Wisura 1993-5-9 4911 Humboldt Northwest: Hwy 299, 5.7 mi. W of Willow Creek at E-fork camp ground. Comment
  HSC74431  Maianthemum stellatum Gail Newton 1980-8-10 2061 Humboldt Near Blake Mtn. 1707 Comment
  CAS-BOT-BC512772  Maianthemum stellatum Doris K. Kildale 1926-3-26 1648 Humboldt Old Fortuna Road 15 Comment
  HSC54205  Malacothrix clevelandii Griswold, Butler 1979-7-12 7248 Humboldt Near Cedar Creek, close to the town of Willow Creek 1158 Comment
  HSC100442  Malacothrix obtusa Carl C. Marshall Jun 1887 458 Humboldt Near Harris. Comment
  CAS-BOT-BC140134  Malus fusca C. B. Wolf 1930-10-26 1766 Humboldt So. edge of Big Lagoon near the Redwood Highway Bridge 3 Comment
  RSA1806  Malus fusca Carl B. Wolf 1930-10-26 1766 Humboldt south edge of Big Lagoon, near the Redwood highway bridge. 3 Comment
  UC72979  Malus fusca H. P. Chandler May 1905 Humboldt Eureka Comment
Read comments
Jun 17 2020
  JEPS42472  Marah oregana W. L. Jepson 1932-8-3 16478 Humboldt 2 mi w Dyerville Comment
  POM128304  Marah oregana H. P. Chandler 1901-6-10 1407 Humboldt Saint's Rest; Klamath River. 152 Comment
  HSC79362  Matricaria discoidea Kenneth Clark 1981-5-2 1360 Humboldt Point Delgada, Mario's Marina 15 Comment
  HSC15526  Medicago arabica J. Lackey 1971-3-28 9 Humboldt 3 mi. S of Cape Mendocino on Capetown Rd. Comment
  UC1197432  Medicago lupulina Joseph P. Tracy 1915-7-25 4662 Humboldt Eureka Northern Coast Region 0 Comment
  HSC71609  Medicago lupulina J. P. Smith, Steve Selva 1970-6-14 3815 Humboldt Along Hwy. 96 at Whitmore Creek 152 Comment
  CAS-BOT-BC271115  Melica bulbosa Joseph P. Tracy 1935-7-24 14194 Humboldt Near Ranger Station, Trinity Summit 1828 Comment
  UC184156  Melica californica Joseph P. Tracy 1912-6-9 3677 Humboldt Alton; Northern Coast Region 30 Comment
  UCD87500  Melica harfordii Freed W. Hoffman 1946-5-24 1718 Humboldt Willow Creek. Comment
  UCD87504  Melica harfordii August L. Hormay 1932-5-12 s.n. Humboldt Bull Creek Road, Redwood Highway, north of Garberville. Comment
  UC34139  Melica spectabilis Joseph Burtt Davy and Walter C. Blasdale 1899-6-21 5827 Humboldt Trinity Summit Comment
  HSC102547  Melica subulata M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-29 1536 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1579 Comment
  HSC97956  Melica subulata Cara Witte, Michael Scott 2007-6-22 345 Humboldt Board Camp Mountain. Road to Tri Board Camp. 1494 Comment
  UC1197423  Melilotus albus Joseph P. Tracy 1920-8-15 5359 Humboldt Bluff Creek Northern Coast Ranges, Klamath River 152 Comment
  JEPS86110  Menziesia ferruginea Wayne Roderick 1965-6-5 Humboldt 0.5 mi s of Del Norte-Humboldt County line 152 Comment
  CAS-BOT-BC348376  Micropus californicus var. californicus M. S. Jussel 1931-5-2 s.n. Humboldt 25 miles n. of Garberville Comment
  UC1223187  Micropus californicus var. californicus Joseph P. Tracy 1942-7-1 17360 Humboldt along Van Duzen River (opposite Buck Mountain); along Van Duzen River, Dinsmore's 762 Comment
  UC427865  Micropus californicus var. californicus H. E. Parks 1930-5-25 872 Humboldt ridges above Laribee Valley Comment
  UC204748  Microseris bigelovii Joseph P. Tracy 1918-7-3 4993 Humboldt Shelter Cove Northern Coast Ranges 15 Comment
  CHSC93621  Microseris borealis K. L. Chambers 1957-8-31 1225 Humboldt Lake Prairie, on road from Bald Mt. to Snow Camp, ca. 9 mi. S of Ranger Station. In bog, SE end of the lake. Comment
  HSC75437  Microsteris gracilis J. O. Sawyer 1980-7-18 3593 Humboldt North Trinity Mountain Research Natural Area, north of Mill Creek Lake to Red Cap Hole. Comment
  RSA167416  Microsteris gracilis subsp. gracilis Joseph P. Tracy 1950-5-7 18648 Humboldt Valley of South Yager Creek 762 Comment
  HSC26809  Mimulus alsinoides Thomas W. Nelson 1971-4-24 401 Humboldt Overlooking the East Fork of Willow Creek Comment
  BLMAR683  Mimulus aurantiacus Jennifer Wheeler 2013-6-7 683 Humboldt King range, Strawberry Rock 35 Comment
  HSC20682  Mimulus aurantiacus var. aurantiacus H. E. Parks, S. T. Parks Jun 1951 Humboldt Trinidad; along bay shore near landing Comment
  JEPS17993  Mimulus aurantiacus var. aurantiacus George B. Rossbach 1955-6-10 504 Humboldt 2 mi n Stephens Redwood Grove (Route 101); South Fork of Eel River Comment
  JEPS35817  Mimulus aurantiacus var. aurantiacus Rimo Bacigalupi, and L. R. Heckard 1964-7-28 8963 Humboldt just above (1/8 mi) and e Shelter Cove Comment
  UC1063400  Mimulus aurantiacus var. aurantiacus A. E. Wieslander 1931-5-22 217 Humboldt hills s Ferndale; Cape Fortuna Quadrangle Comment
  UC1011928  Mimulus aurantiacus var. aurantiacus Francis W. Pennell 1940-7-8 26109 Humboldt above beach s Trinidad; Route 101 30 Comment
  UC26714 Image available Mimulus aurantiacus var. pubescens J. Burtt Davy before June, 1894 Humboldt Comment
  HSC55737  Mimulus breweri G. L. Clifton, Griswold 1979-7-26 10234 Humboldt Near High Spring, close to the town of Forks of Salmon 2024 Comment
  JEPS10552  Mimulus breweri Joseph P. Tracy 1932-7-10 10375 1/2 Humboldt Corral Prairie Trinity Summit 1584 Comment
  UC535721  Mimulus cardinalis Eleanor Armstrong 1934-7-23 1140 Humboldt Richardson Grove <South Fork Eel> River 121 Comment
  HSC20709  Mimulus dentatus R. D. Zortman 1963-5-12 41 Humboldt 5 mi. NE of Arcata, S of the Mad River, off Warren Creek Rd. 91 Comment
  JEPS86884  Mimulus guttatus David M. Thompson 1986-3-26 856 Humboldt 100 ft s Siskiyou Co. line (along Hwy 96, Somes Bar, at confluence of rivers); Klamath River, Salmon River 61 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
  SEINET12269862  Mimulus guttatus J. P. Tracy 1950-1 18745 Humboldt near Capetown, Cape Ridge, 1 mi E of Cape Mendocino 152 Comment
  UC1063548  Mimulus inodorus H. L. Person 1932-8-1 Humboldt Korbel Eureka Quadrangle Comment
  UC41883  Mimulus kelloggii Harley P. Chandler June 1901 1480 Humboldt Klamath River North Coast Ranges 426 Comment
  UC1196806  Mimulus kelloggii Joseph P. Tracy 1947-4-20 17671 Humboldt Willow Creek Trinity River Valley 152 Comment
  HSC102538  Mimulus moschatus M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-28 1524 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1106 Comment
  HSC74735  Mimulus moschatus Gail Newton 1981-7-24 2315 Humboldt Near Chaparral Mtn. 1433 Comment
  HSC56180  Mimulus primuloides var. primuloides G. L. Clifton, Griswold 1979-8-1 12095 Humboldt Near N Trinity Mtn., close to the town of Hoopa. 1798 Comment
  HSC55643  Mimulus pulsiferae Overton, Butler 1979-7-24 9711 Humboldt Near Black Rock, close to the town of Willow Creek. 1554 Comment
  HSC74275  Minuartia douglasii M. A. Baker 1980-5-23 1383 Humboldt Near Buck Mtn. 1524 Comment
  UC162891  Minuartia douglasii Mrs. M. H. Manning 1901-5 21 Humboldt near Hupa Comment
  HSC39552  Minuartia nuttallii subsp. gregaria Thomas W. Nelson 1976-6-14 2705 Humboldt S of Lassic Peak 1524 Comment
  HSC20242  Mitella caulescens D. E. Anderson 1967-6-7 4350 Humboldt Along Puter Creek, tributary to Mad River, about 3 mi. S of Blue Lake Comment
  UC8145  Moehringia macrophylla Mrs. Mary H. Manning Apr. 1899 Humboldt Hoopa Valley Comment
  UC8146  Moehringia macrophylla Harley P. Chandler June, 1901 1284 Humboldt Hupa Indian Reservation; North Coast Ranges, Hupa Indian Reservation 1097 Comment
  HSC96945  Moehringia macrophylla Ryoko Ito, Shauna McDonald 2007-6-13 8 Humboldt 1 mi. from NF1 on FS 5N04 1601 Comment
  UC13618  Moehringia macrophylla J. Burtt Davy 1899-6-18 5619 Humboldt back Korbel (Bald Mt.); North Coast Ranges, , back of Korbel Comment
  HSC100506  Monardella villosa Carl C. Marshall Jun 1886 276 Humboldt Hoopa. Comment
  SEINET3228189 Image available Monardella villosa Joseph P. Tracy 1912-8-1 3961 Humboldt Valley of Van Duzen River, opposite Buck Mountain 760 Comment
  HSC14282  Monardella villosa Paul Shields Jul 1955 Humboldt 3 mi. S of Myers Flat Comment
  UC718021  Monardella villosa subsp. villosa Carl B. Wolf 1934-7-3 5923 Humboldt Weitchpec junction of Klamath & Trinity Rivers, 200 yards west of School. 304 Comment
  RSA52284  Monotropa uniflora D. Meadows 1950-7-21 a.n. Humboldt Near Bear Trap on Irvine Trail, Prairie Creek State Park. Comment
  CAS-BOT-BC444804  Montia diffusa Harley P. Chandler 1901-5-1 1271 Humboldt North Coast Ranges. Redwood Belt 152 Comment
  CAS-BOT-BC444799  Montia diffusa Don Hagar 1956-5-14 59 Humboldt Brush Mt., ca. 6 miles sw. of Willow Creek 914 Comment
  HSC70951  Montia linearis J. M. DiTomaso 1981-5-15 2007 Humboldt Larabee Valley, 10 mi. E of Bridgeville on Hwy. 36 Comment
  UC183599  Montia linearis Joseph P. Tracy 1913-6-14 4134 Humboldt in valley of Van Duzen River (Dinsmore's Ranch, opposite Buck Mountain); Northern Coast Ranges, Dinsmore's Ranch 762 Comment
  CAS-BOT-BC445157  Montia parvifolia Doris K. Kildale 1928-6-24 5263 Humboldt Redwood Creek at Berry's 289 Comment
  CAS-BOT-BC445165  Montia parvifolia L. R. Abrams; R. Bacigalupi 1922-6-25 8282 Humboldt Big Lagoon south of Orick Comment
  UCD101764  Montia parvifolia H. P. Olmo 1930-6-10 s.n. Humboldt Wooley Creek. Comment
  HSC49508  Morella californica R. York 1979-4-13 221 Humboldt N of College Cove Comment
  HSC99575  Muhlenbergia filiformis K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-8-10 240 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
  UC1103784  Muhlenbergia filiformis Joseph P. Tracy 1931-9-7 9656 Humboldt on sand bar along river Northern Coast Ranges, Trinity River Valley, Willow Creek 152 Comment
  UCD86802  Muhlenbergia mexicana Joseph P. Tracy 1916-9-5 4774 Humboldt South Fork of Eel River, 4 miles above the mouth. 60 Comment
  HSC45080  Myosotis discolor R. Sutherland 1978-5-12 11 .12578 Humboldt 282 Comment
  SEINET12275673  Myosotis discolor J. P. Tracy 1942-1 17354 Humboldt 1 mi NE of Garberville, on road to Harris 305 Comment
  SEINET5624170 Image available Myosotis sylvatica R. D. Modafferi 1965-1 s.n. Humboldt 0.5 mile south of Trinidad on old highway 101 305 Comment
  HSC77866  Myosurus minimus Rudy Becking 1982-11-13 Humboldt N Spit of Samoa Peninsula, near USCG Station Comment
  JEPS109582  Myriophyllum hippuroides Dean W. Taylor 2002-9-12 18342 Humboldt Lake Prairie, remnant of the original bog vegetation on the eastern end of the lake 1097 Comment
  HSC13475  Myriophyllum sibiricum R. L. Jarvis 1962-4-29 24 Humboldt Clam Beach Lagoons, .5 mi. S of Little River on Hwy. 101 0 Comment
  RSA10034  Nassella lepida Joseph P. Tracy 1933-5-20 12247 Humboldt Mattole Valley, near Petrolia 152 Comment
  HSC64121  Nasturtium officinale J. P. Smith 1973-5-26 6787 Humboldt Scotia Bluffs along the Eel River near Rio Dell. Comment
  CAS-BOT-BC60347  Nasturtium officinale Doris K. Kildale 1926-8-12 2484 Humboldt Moonstone Beach near Trinidad. Comment
  HSC53978  Navarretia capillaris Griswold, Butler 1979-7-11 7052 Humboldt Near Twin Lakes, close to the town of Willow Creek 1417 Comment
  HSC55152  Navarretia capillaris G. L. Clifton, Griswold 1979-8-1 12096 Humboldt Near N Trinity Mtn., close to the town of Hoopa. 1798 Comment
  JEPS70295  Navarretia divaricata Joseph P. Tracy Jul 16 1930-Jul 19 1930 9065 Humboldt near McKay Camp; Northern Coast Ranges, South Fork Mountain 1676 Comment
  HSC98519  Navarretia divaricata subsp. divaricata Cara Witte 2007-6-7 235 Humboldt Brays Opening on National Forest 1. 1/2 mile north of intersection with 4N38. 1375 Comment
  UC146173  Navarretia intertexta Joseph P. Tracy 1908-6 2799 Humboldt opposite Buck Mountain; Northern Coast Ranges, Valley of Van Duzen River 304 Comment
  UC60875  Navarretia intertexta Harley P. Chandler Jun 1901 1542 Humboldt Klamath River North Coast Ranges 426 Comment
  HSC39447  Navarretia squarrosa Linda M. Barker 1976-8-2 1668 Humboldt Lanphere- Christensen Dunes, 3 mi. W of Arcata Comment
  HSC13584  Nemophila menziesii H. E. Parks, J. P. Tracy 1930-5-25 797 Humboldt Laribee Valley 793 Comment
  HSC45622  Nemophila menziesii Diane L. Reed 1978-4-22 28 Humboldt Tish Tang Campground, 5 miles north of Willow Creek on State Hwy. 96. Comment
  HSC36876  Nemophila menziesii J. P. Smith, J. O. Sawyer, J. Cole 1976-4-18 8612 Humboldt Bald Hills Rd., 17 mi. from its jct. with Hwy. 101 854 Comment
  UC1239736  Nemophila menziesii Joseph P. Tracy 1935-5-26 13910 Humboldt Lone Star Creek , Lone Star Creek (Iaqua Region) 609 Comment
  RSA33408  Nemophila menziesii var. atomaria Doris K. Kildale 1929-2-19 4265 Humboldt Little River. Comment
  UC562595  Nemophila parviflora Joseph P. Tracy 1932-7-13 10492 Humboldt near Corral Prairie (Trinity Summit); , near Corral Prairie 1584 Comment
  RSA46499  Nicotiana bigelovii Doris K. Kildale 1925-9-12 1327 Humboldt Salmon Crk near Miranda. 114 Comment
  HSC6971  Noccaea fendleri subsp. glauca Lincoln Constance, R. C. Rollins 1942-5-11 2877 Humboldt Hoopa Valley, 5 mi. S of Hoopa 122 Comment
  UCD110194  Notholithocarpus densiflorus S. P. Lynch 1975-6-9 1371 Humboldt ca. 20.4 mi. E of Arcata on Hwy. 299, heading towards Willow Creek. Comment
  HSC54589  Notholithocarpus densiflorus var. densiflorus Overton, Butler 1979-7-24 9657 Humboldt Near Friday Camp, close to the town of Willow Creek. 1250 Comment
  HSC20656  Nuttallanthus texanus L. H. Myers 1963-4-5 19 Humboldt Dunes W of Lanpheres Rd., Mad River slough area Comment
  HSC37911  Nuttallanthus texanus Peter Sorensen 1976-6-4 Humboldt N Spit Comment
  HSC20655  Nuttallanthus texanus Francis Winter 1960-4-19 Humboldt Samoa Peninsula, Fairhaven Airport entrance, 12 mi. W of Arcata Comment
  CAS-BOT-BC142295  Oemleria cerasiformis Doris K. Kildale 1927-6-25 3567 Humboldt Shelton Cove in gully. Comment
  HSC38297  Oemleria cerasiformis Thomas W. Nelson 1976-3-22 2276 Humboldt Beside Eureka Muni. Golf Course Comment
  HSC77344  Oemleria cerasiformis L. P. Janeway 1983-4-16 231 Humboldt Near the old Hwy. 299 on W side of Berry Summit. 823 Comment
  UC1198783  Oemleria cerasiformis Joseph P. Tracy 1920-2-29 5310 Humboldt Eureka Northern Coast Ranges (at Stephen Hill place) 60 Comment
  UC1222314  Oemleria cerasiformis Joseph P. Tracy 1951-6-21 19514 Humboldt opposite Willow Creek; Trinity Valley Comment
  HSC26680  Oenanthe sarmentosa John R. Keith 1973-5-15 Humboldt Abandoned log pond about 300 yds. E of junction of Guintoli Ln. and West End Rd. Comment
  UC642344  Oenanthe sarmentosa Joseph P. Tracy 1938-8-20 16123 Humboldt along Van Duzen R. Alton; North Coast Ranges, Van Duzen R. 30 Comment
  HSC49088  Oenothera elata subsp. hookeri Patricia Shesgreen 1978-8-12 134 Humboldt 1/2 mi. E of Samoa Cookhouse on Vance Ave., Samoa. Comment
  UC1196948  Oenothera glazioviana J. P. Tracy 1898-9-25 281 Humboldt along streets Eureka 0 Comment
  HSC102042  Oreostemma alpigenum var. andersonii M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-13 945 Humboldt Rustic Camp, northwest of Patterson Meadows 1512 Comment
  CHSC12923  Orobanche californica subsp. californica K. D. Cox 1974-6-7 189 Humboldt Big Lagoon County Park, on Hwy. 101, about 7 mi. N. of Tinidad. Next to parking lot. 0 Comment
  HSC16683  Orobanche californica subsp. californica D. E. Anderson 1965-10-25 4159 Humboldt Big Lagoon County Park, SW corner of Big Lagoon Comment
  HSC54740  Orthilia secunda G. L. Clifton, Griswold 1979-7-26 10203 Humboldt Near Salmon Mtn., close to the town of Forks of Salmon 1981 Comment
  SEINET8733530 Image available Orthocarpus erianthus var. gratiosus S. K. Harris 1942-1 1474 Humboldt Bear River Ridge, 1500 ft. 457 Comment
  HSC99532  Orthocarpus imbricatus K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-28 196 Humboldt Near North Trinity Mtn and Water Dog Lakes, Six Rivers National Forest. 1826 Comment
  HSC56006  Osmorhiza berteroi Overton, Butler 1979-7-31 11474 Humboldt Near N Trinity Mtn., close to the town of Hoopa 1940 Comment
  JEPS14255  Osmorhiza berteroi Joseph P. Tracy 1932-7-12 10450 Humboldt near Corral Prairie; Trinity Summit 1584 Comment
  HSC56049  Osmorhiza occidentalis G. L. Clifton, Terry Griswold 1979-7-31 11645 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1719 Comment
  CHSC19520  Oxalis oregana R. D. Modafferi 1965-5-1 66 Humboldt 0.5 mile south of Trinidad on old highway 101. Roadside. Comment
  HSC22047  Oxalis oregana B. D. Rogers, D. E. Anderson 1965-5-1 511 Humboldt 4 mi. SE of Arcata along Jacoby Creek Comment
  HSC27893  Oxalis oregana Clifton Raymond Chesbrough 1973-6-19 65 Humboldt 0.25 mi. from Harris and T St. on U St. Comment
  JEPS43138  Oxalis oregana W. L. Jepson 1934-5-7 16696 Humboldt Bull Creek Comment
  HSC45068  Oxalis oregana D. Sutherland 1978-4-23 10 .23478 Humboldt 666 Comment
  HSC59664  Oxalis oregana George Kirn 1977-10-3 Humboldt Vicinity of Jolly Giant Creek, 1/4 mi. E of HSU campus 46 Comment
  SEINET12183670  Oxalis oregana F. H. Utech, Sato, T.; Ohara, M. 1990-1 90 -290 Humboldt Humboldt Redwoods State Park, Jensen Grove 50 Comment
  UC1103419  Oxalis oregana Joseph P. Tracy 1923-5-13 6199 Humboldt near Strong's Station (on Van Duzen River); Northern Coast Ranges 60 Comment
  UC1197420  Oxalis oregana Joseph P. Tracy 1926-4-25 7413 Humboldt Strong's Station Northern Coast Ranges 60 Comment
  HSC102179  Oxalis trilliifolia M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-3 1092 Humboldt Patterson Meadows 1566 Comment
  SEINET200360 Image available Paeonia brownii Joseph P. Tracy 1938-6-13 15920 Humboldt Grouse Mountain at 'Cold Springs 1430 Comment
  SEINET182648 Image available Parapholis incurva S. K. Harris, J. P. Tracy 1936-6-6 3218 Humboldt Eureka, California Comment
  SEINET200959 Image available Parapholis incurva Joeseph P. Tracy 1937-6-5 15328 Humboldt Mouth of Little River. 3 Comment
  UCSB12235  Parentucellia viscosa Breedlove, Dennis 1961-7-4 Humboldt 13 mi W of U.S. 101 on U.S. 299 near crossing of Mad River 228 Comment
  CDA6400  Parentucellia viscosa G. D. Barbe, T. C. Fuller 1974-6-17 1827 Humboldt Murray Field, County Airport, north of Eureka. 0 Comment
  BLMAR620  Paxistima myrsinites Jennifer Wheeler 2011-5-24 620 Humboldt Lacks Creek, Pine Ridge/Stormy saddle road junction 975 Comment
  HSC99423  Paxistima myrsinites K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-1 72 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
  UC1199002  Paxistima myrsinites Joseph P. Tracy 1948-8-15 18132 Humboldt on Ridge 2 mi. e. Grove's Prairie (near Elk Camp, Trinity Summit); Trinity Summit 1554 Comment
  UC1239631  Pectocarya penicillata Joseph P. Tracy 1911-7-10 3484 Humboldt near mouth Willow Creek; Valley of Trinity River 152 Comment
  HSC104271  Pedicularis densiflora Samantha E. Andres 2016-3-14 1 Humboldt Along Hwy. 299, ~5 mi. W of Willow Creek 274 Comment
  CAS-BOT-BC67768  Pellaea andromedifolia Doris K. Kildale 1928-12-30 6768 Humboldt Phillipsville Comment
  HSC100933  Pellaea andromedifolia Miss Handy Jun 1886 336 Humboldt Maple Cr. (on a large rock). Comment
  JEPS60059  Pellaea andromedifolia Willis G. Corbitt 1933-4-9 Humboldt Scotia Bluffs Comment
  CHSC63423  Penstemon anguineus Vernon H. Oswald 1994-6-29 6362 Humboldt Titlow Hill Rd. (Forest Rd. 1) 10.8 mi S of Hwy. 299, 0.6 mi S of Friday Ridge Rd., S of Willow Creek. 1548 Comment
  HSC44545  Penstemon anguineus Brad Klipfel 1973-7-15 164 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC99467  Penstemon anguineus K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-14 121 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  UC1238913  Penstemon heterophyllus Freed W. Hoffman 1946-5-20 1011 Humboldt Mattole River near Petrolia; North Coast Ranges, Mattole River nr Petrolia Comment
  HSC73634  Penstemon newberryi M. A. Baker 1980-7-23 3180 Humboldt Near Orleans Mtn. 1859 Comment
  HSC82124  Penstemon newberryi subsp. berryi Thomas W. Nelson 1979-7-11 4996 Humboldt N Trinity Mtn. and ridge to E. 1829 Comment
  SEINET196690  Perideridia gairdneri Joseph P. Tracy 1942-9-20 17324 Humboldt 2 miles S of Fields Landing 3 Comment
  HSC98906  Perideridia kelloggii Cara Witte 2008-8-16 1029 Humboldt Buck Flat. Intersection of National Forest 1 and Forest Service Road 5N01. 1579 Comment
  HSC45397  Perideridia oregana Thomas W. Nelson, Jane P. Nelson 1977-9-3 3721 Humboldt N of Bear Creek 1494 Comment
  CHSC68488  Petasites frigidus var. palmatus Vernon H. Oswald 1997-4-10 8334 Humboldt Hwy. 299 between Blue Lake and Willow Creek, on the east side of Lord Ellis Summit. Along this section of highway. 640 Comment
  UC1199101  Phacelia Joseph P. Tracy 1948-5-31 18022 Humboldt Blocksburg 518 Comment
  HSC13680  Phacelia bolanderi W. Lanphere 1937-5-25 Humboldt Dyerville Comment
  HSC57203  Phacelia heterophylla Griswold, Butler 1979-7-10 7129 Humboldt Near Board Camp Mtn., close to the town of Willow Creek. 1350 Comment
  RSA30626  Phacelia heterophylla subsp. virgata Lincoln Constance, R. C. Rollins 1942-5-11 2876 Humboldt Hoopa Valley, 5 miles south of Hoopa. 122 Comment
  UC162721  Phacelia nemoralis subsp. oregonensis Joseph P. Tracy 1911-7-5 3317 Humboldt Willow Creek (tributary of Trinity River) Northern Coast Ranges (near its mouth) 304 Comment
  UC666591  Phacelia nemoralis subsp. oregonensis W. S. Boyle 1942-5-9 1086 Humboldt within 50 yd Redwood Highway, #101 (overlooking South Fork of the Eel River, 1 mi from n boundary of Mendocino Co.) Comment
  UC673179  Phacelia nemoralis subsp. oregonensis Lincoln Constance and Reed C. Rollins 1942-5-11 2782 Humboldt 6 mi s Hoopa; North Coast Ranges, Hoopa Valley 121 Comment
  HSC102194  Phacelia procera M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-4 1108 Humboldt Along trail (abandoned Road 6E74) from Andy's Camp to Patterson Meadows 1563 Comment
  JEPS1090  Phacelia procera Joseph P. Tracy 1932-7-12 10431 Humboldt Corral Prairie Trinity Summit 1584 Comment
  UC552717  Phalaris angusta Joseph P. Tracy 1935-5-25 13856 Humboldt Fort Seward 106 Comment
  UCD88333  Phalaris angusta A. A. Beetle; J. P. Tracy, G. L. Stebbins Jr. 1942-6-2 3465 Humboldt 1 mile E of Alton. Comment
  UC552718  Phalaris arundinacea Joseph P. Tracy 1935-6-8 13950 Humboldt along coast in front of South End Stone Lagoon (Dry Lagoon); in front of South End Stone Lagoon, Dry Lagoon 3 Comment
  HSC47795  Phalaris minor Michael A. Watkins 1978-6-10 12 Humboldt Arcata, E side of the 7th Street overpass to Hwy. 101 Comment
  UC1222381  Philadelphus lewisii Joseph P. Tracy 1950-6-18 18853 Humboldt 2 mi w Briceland; Redwood Creek Comment
  UC161563  Philadelphus lewisii Joseph P. Tracy 1911-7-5 3319 Humboldt Willow Creek Northern Coast Ranges (near mouth, creek is a tributary of Trinity River) 182 Comment
  HSC58654  Phleum alpinum G. L. Clifton, Griswold 1979-7-31 11726 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1805 Comment
  HSC17182  Phlox adsurgens D. E. Anderson 1965-5-15 3693 Humboldt About 7 mi. N of Hoopa on Bloody Camp Prairie Rd. Comment
  UC1198554  Phlox adsurgens Joseph P. Tracy 1947-7-5 17808 Humboldt near Box Camp; Trinity Summit 1524 Comment
  UC1212579  Phlox adsurgens Francia Chisaki and Helen Sharsmith 1959-8-22 4755 Humboldt Happy Camp, just over line from Trinity County Inner North Coast Ranges 914 Comment
  RSA141274  Phlox diffusa subsp. diffusa Joseph P. Tracy 1927-6-12 8126 Humboldt Horse Mountain 1433 Comment
  RSA273312  Phoradendron libocedri Thomas W. Nelson, Jane P. Nelson 1976-6-16 2739 Humboldt Just W of Alder Springs. 1524 Comment
  HSC41478  Phyla nodiflora Ed Cope, R. Runyon 1977-7-20 132 Humboldt 15th and H St., Arcata. Comment
  CAS-BOT-BC451997  Phyllospadix scouleri Robert F. Thorne 1957-9-3 19016 Humboldt At Abalone Point, Patrick's Point State Park Comment
  CAS-BOT-BC452023  Phyllospadix torreyi H. E. Parks 1933-11-12 s.n. Humboldt Spruce Cove, Trinidad Comment
  JEPS386  Phyllospadix torreyi Joseph P. Tracy 1938-9-9 16146 Humboldt Trinidad Comment
  CAS-BOT-BC140580  Physocarpus capitatus Thomas Nelson; Linda Barker 1977-6-3 3387 Humboldt On flood plain of Mad River at south end of Mad River Bridge 53 Comment
  JEPS44665  Physocarpus capitatus Lincoln Constance 1934-5-26 656 Humboldt s end Dyerville Bridge (s bank of S. Fork of Eel River); Bull Creek Region Comment
  CAS-BOT-BC78202  Picea sitchensis Carl B. Wolf 1927-8-29 1202 Humboldt 7 mi. s. of Ferndale & Capetown, Bear River Ridge, [Mt.Glen] Mt. Glen Comment
  HSC89481  Picea sitchensis P. A. Daly 1986-3-12 72 Humboldt Trinidad Head, along trail 61 Comment
  SBBG25612  Picea sitchensis E. R. Blakley 1966-8-17 6802 Humboldt Patrick's Pt, 5 mi N of Trinidad 60 Comment
  UCR48598  Picris echioides R. D. Goeden, Don W. Ricker 1987-9-2 870902- 12 Humboldt Loleta, along Cannibal Road 8 Comment
  HSC1482  Pinus contorta S. J. Hawks 1965-3-12 5 Humboldt 0.25 mi. W of Fairhaven Comment
  POM21765  Pinus contorta var. contorta L. R. Abrams 1916-7-18 6074 Humboldt Arcata to Trinidad. Comment
  HSC55094  Pinus monticola G. L. Clifton, Griswold 1979-7-31 11797 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa. 1845 Comment
  HSC72802  Pinus monticola Gail Newton 1980-6-16 160 Humboldt Near Monks Camp. 1097 Comment
  UC212990  Pinus monticola Mrs. F. A. Graham 1919-8-1 Humboldt Trinity Summit Northern Coast Ranges, Trinity Summit 1828 Comment
  CAS-BOT-BC78979  Pinus muricata Doris K. Kildale 1927-3-27 2998 Humboldt on highway 1 mile north of Trinidad Comment
  HSC1529  Pinus muricata R. A. Magie 1964-5-3 46 Humboldt 2 mi. N of Trinidad on old Hwy. to Crescent City. Comment
  UC1196428  Piperia transversa Joseph P. Tracy 1937-7-11 15419 Humboldt Garberville 152 Comment
  HSC44610  Pityopus californicus T. Mainwaring 1978-6-2 Humboldt Horse Mountain Area. Bulk Collection 120 Comment
  HSC57196  Plagiobothrys bracteatus Griswold, Butler 1979-7-11 7046 Humboldt Near Twin Lakes, close to the town of Willow Creek 1417 Comment
  UC1222219  Plagiobothrys reticulatus Joseph P. Tracy 1942-6-12 17112 Humboldt Prairie Creek at the prairie at Elk Grove; Prairie Creek, Elk Grove Comment
  JEPS60969  Plagiobothrys reticulatus var. reticulatus Joseph P. Tracy 1904-7-4 2111 Humboldt Eureka Northern Coast Region 0 Comment
  UC1222202  Plagiobothrys scouleri Joseph P. Tracy 1949-6-20 18315 Humboldt 6 mi se Arcata; Fickle Hill 609 Comment
  UC1222204  Plagiobothrys scouleri Joseph P. Tracy 1948-5-31 17987 Humboldt halfway between Garberville and Harris (at Robertson's sheep ranch) 609 Comment
  HSC40868  Plantago erecta Linda M. Barker 1976-4-30 1397 Humboldt 3 mi. W of Arcata Comment
  SEINET12342198  Plantago erecta J. P. Tracy 1950-1 18730 Humboldt Bear River Ridge 610 Comment
  HSC71375  Plantago major J. P. Smith 1971-10-9 5022 Humboldt Banks and flood plain of the Mad River above the fish hatchery. Comment
  HSC62906  Plantago maritima J. M. DiTomaso 1979-5-20 1057 Humboldt Above College Cove at Elks Head, 1 mi. N of Trinidad. Comment
  RSA15562  Plantago maritima Carl B. Wolf 1927-8-29 1210 Humboldt Devils' Gate, S of Cape Mendocino Comment
  POM312378  Plantago subnuda Malcolm A. Nobs, S. Galen Smith 1949-8-3 1188 Humboldt Southern outskirts of Eureka Comment
  HSC53868  Platanthera dilatata Griswold, Butler 1979-7-10 6348 Humboldt Near Board Camp Mtn., close to the town of Willow Creek 1372 Comment
  UC146079  Platystemon californicus Joseph P. Tracy 1904-4-24 2034 Humboldt sand dunes of Ocean Beach Ocean Beach (Humboldt Bay); Northern Coast Region, , Ocean Beach Comment
  HSC16789  Platystemon californicus J. P. Tracy 1904-4-24 2020 Humboldt Humboldt Bay Comment
  UC1196294  Platystemon californicus Joseph P. Tracy 1944-5-14 17466 Humboldt at Bucksport Bucksport (near Eureka); near bay shore at Bucksport (near Eureka) 6 Comment
  UC1541512  Plectritis ciliosa H. Parks and J. Tracy 1930-5-25 860 Humboldt Laribee Valley 762 Comment
  UC1239606  Plectritis congesta Joseph P. Tracy 1923-5-20 6216 Humboldt Kneeland Prairie 762 Comment
  UC176116  Plectritis congesta Joseph P. Tracy 1913-6-26 4348 Humboldt Northern Coast Ranges, Lower Foothills of Buck Mountain Buck Mountain; Northern Coast Ranges, Buck Mountain 762 Comment
  HSC96284  Plectritis congesta subsp. congesta J. Breton, A. Livingston 2005-6-8 5 Humboldt 2.0 mi. S of Hwy. 299 on Titlow Rd. 1032 Comment
  CAS-BOT-BC458164  Pleuricospora fimbriolata Doris K. Kildale 1927-8-7 3858 Humboldt Lawrence Creek 609 Comment
  HSC97358  Pleuricospora fimbriolata Rudolf W. Becking 1972-6-30 Humboldt Fish Lake area, Orleans. Bulk Collection 31 762 Comment
  UC1103799  Pleuropogon refractus Joseph P. Tracy 1936-8-7 15093 Humboldt head of Little Hors-Linto Creek (Trinity Summit); , Little Hors-Linto Creek 1371 Comment
  UCD90384  Poa annua G. L. Stebbins Jr. 1942-6-2 3622 Humboldt 4 miles north of Bridgeville. Comment
  HSC10642  Poa bolanderi C. S. Chavez 1965-5-7 67 Humboldt Redwood forest behind H.S.C. campus. Comment
  UC184155  Poa compressa Joseph P. Tracy 1912-7-26 3872 Humboldt Kneeland Prairie; Northern Coast Ranges 762 Comment
  JEPS71272  Poa douglasii unknown 1925-8-2 119 Humboldt Samoa Comment
  UC1132656  Poa douglasii H. S. Yates 1936-6-16 5650 Humboldt 1/2 mi sw Samoa; Eureka Quadrangle 6 Comment
  CAS-BOT-BC254278  Poa macrantha David D. Keck; J. Clausen 1935-6-16 3382 Humboldt Mouth of Little River Comment
  UCD91813  Poa pratensis Linda M. Barker 1976-6-1 1567 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  UC60226  Poa pratensis subsp. pratensis Joseph Burtt Davy and Walter C. Blasdale 1899-6-11 5432 Humboldt near Hubbards Comment
  HSC10786  Poa secunda subsp. secunda A. H. Murphy 1951-4-18 18 Humboldt Tooby and Prior Ranch, Blocksberg. 457 Comment
  UC525667  Poa secunda subsp. secunda Joseph P. Tracy 1927-5-15 8051 Humboldt w Hoopa Valley (Supply Creek); North Coast Ranges 304 Comment
  UC525668  Poa secunda subsp. secunda Joseph P. Tracy 1926-5-9 7469 Humboldt valley s of Yager Creek 762 Comment
  UCD91750  Poa secunda subsp. secunda A. H. Murphy 1951-6-25 78 Humboldt About 2 miles W of Snow Camp, ENE of Kneeland. Comment
  CAS-BOT-BC235985  Poa secunda subsp. secunda A. A. Beetle; Stebbins; Tracy 1942-6-2 3478 Humboldt Head of S Yager Creek, near Yager Comment
  UC35075  Polygala cornuta var. cornuta Chesnut and Drew 1888-7-28 Humboldt Grouse Creek Comment
  UC1713695  Polygonum davisiae Joseph P. Tracy 1919-9-22 5261 Humboldt Trinity Summit Northern Coast Ranges 1889 Comment
  UC146188  Polygonum douglasii subsp. douglasii Joseph P. Tracy 1908-6 2766 Humboldt opposite Buck Mountain; Northern Coast Ranges, Valley of Van Duzen River 304 Comment
  UC1541405  Polygonum douglasii subsp. spergulariiforme H. E. Parks and J. P. Tracy 1930-9-15 767 Humboldt Kneeland Bald Hills Comment
  RSA275282  Polygonum kelloggii Thomas W. Nelson, Jane P. Nelson 1978-7-2 4391 Humboldt [Unspecified] 1616 Comment
  RSA65853  Polygonum paronychia F. W. Peirson 1941-7-29 13109 Humboldt old sand dune back of beach at Little River Beach State Park Comment
  RSA667220  Polygonum paronychia George K. Helmkamp, E. A. Helmkamp 2001-7-8 7018 Humboldt North coast: Samoa Peninsula, 2.6 miles S of CA-255 bridge across Humboldt Bay. 15 Comment
  UC146160  Polygonum parryi Joseph P. Tracy 1908-6 2722 Humboldt opposite Buck Mountain; Northern Coast Ranges, valley of Van Duzen River 304 Comment
  HSC98594  Polygonum phytolaccifolium Cara Witte 2007-7-11 506 Humboldt Grouse Mountain. Forest Service Road 5N04. Near spring. 1583 Comment
  HSC55283  Polygonum polygaloides subsp. kelloggii Overton, Butler 1979-8-2 12711 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  HSC74386  Polygonum polygaloides subsp. kelloggii M. A. Baker 1980-6-28 2504 Humboldt Near Mad River Buttes 1445 Comment
  CDA2925  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
  CDA2919  Polygonum sachalinense T. C. Fuller 1960-8-25 4973 Humboldt Northwestern; Outer North Coast Ranges region; West of Highway 101, 0.25 mile north of Humboldt Hill Road, Eureka. 0 Comment
  CAS-BOT-BC421006  Polygonum spergulariiforme Henry M. Pollard 1948-8-4 s.n. Humboldt Orleans Mt. Trail 1219 Comment
  SEINET3404068 Image available Polygonum spergulariiforme Joseph P. Tracy 1921-10-2 5966 Humboldt Kneeland Prairie Comment
  HSC98905  Polygonum spergulariiforme Cara Witte 2007-7-9 463 Humboldt Grouse Mountain Lookout. Forest Service Road 4N70. 1641 Comment
  RSA689951  Polypodium californicum Charlotte M. Hoak 1936-8-15 104 Humboldt Patricks Point Comment
  HSC77901  Polypodium californicum L. P. Janeway, Paul Wilson 1984-5-7 764 Humboldt N Spit of Humboldt Bay, on BLM lands near the Coast Guard Station 3 Comment
  BLMAR55  Polypodium glycyrrhiza Jennifer Anthony-Wheeler 1994-2-23 55 Humboldt Samoa/manilla dunes, growing in samoa Dunes Rare Plant Area as part of dense mat covering 12 Comment
  HSC1131  Polypodium scouleri R. E. Hafenfeld 1965-5-9 62 Humboldt 0.25 mi. N Squashan Cr. on Gold Bluff Beach Rd. Comment
  UC1541571  Polypogon interruptus Harold E. Parks August 1924 Humboldt Eureka Comment
  UC204533  Polypogon maritimus Joseph P. Tracy 1918-7-1 4967 Humboldt along Eel River from South Fork to Scotia Holmes Flat; Northern Coast Ranges, along Eel River 60 Comment
  RSA91992  Polypogon maritimus Joseph P. Tracy 1933-7-20 12811 Humboldt Along Mad River, near Blue Lake. 15 Comment
  UC50475  Polypogon monspeliensis Joseph Burtt Davy and Walter C. Blasdale 1899-6-13 5514 Humboldt near Pepperwood; near Pepperwood Comment
  JEPS24330  Polystichum californicum W. L. Jepson 1922-9-10 9460 Humboldt Garberville Comment
  HSC72980  Polystichum imbricans Gail Newton 1980-7-15 1578 Humboldt Near Sims Mtn. 1311 Comment
  HSC13042  Polystichum munitum T. C. DeCew 1970-11-14 35 Humboldt HSU Campus Comment
  SBBG306  Polystichum munitum H. and M. Dearing 1939-5-27 3454 Humboldt Patrick's Crk and Pt Comment
  HSC79150  Polystichum munitum C. J. Thomas 1984-9-25 118 Humboldt In Redwood forest immediately behind HSU fieldhouse 79 Comment
  SEINET11722267  Polystichum munitum C. S. Kaut 2000-1 2 Humboldt Trinidad Comment
  JEPS64534  Populus Joseph P. Tracy 1939-4-18 16211 Humboldt on South Fork of Eel River between Miranda and Redway (at Sylvandale); North Coast Ranges, South Fork of Eel River 91 Comment
  UC249538  Populus trichocarpa Joseph P. Tracy 1922-10-8 6121 Humboldt Mad River at Blue Lake (Northern Coast Ranges); , Mad River at Blue Lake 30 Comment
  CAS-BOT-BC453765  Potamogeton natans L. R. Abrams 1916-7-18 6094 Humboldt Arcata to Trinidad Comment
  HSC49611  Potamogeton natans R. York 1979-4-16 234 Humboldt Between Arcata and Eureka along Hwy. 101 Comment
  HSC59499  Potamogeton natans M. A. Ericksen 1979-4-20 209 Humboldt Northernmost Clam Beach ponds, .3 mi. S of Cranell Rd. and Little River Dr., 16 mi. N of Eureka Comment
  UC176375  Potamogeton natans Joseph P. Tracy 1913-9-9 4406 Humboldt near mouth of Little River; Northern Coast Ranges 3 Comment
  POM343769  Potamogeton pusillus S. K. Harris 1938-9-12 808 Humboldt Shallow backwater of Eel River, near Fernbridge Comment
  UC492177  Potentilla gracilis Joseph P. Tracy 1932-7-10 10387 Humboldt wet meadow at Corral Prairie (Trinity Summit); Klamath Mountains, Trinity Summit 1524 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
  HSC75969  Potentilla gracilis var. fastigiata Overton, Butler 1979-8-2 12596 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  CAS-BOT-BC531751  Potentilla gracilis var. fastigiata F. P. Cronemiller 1924-5-20 882 Humboldt Potato Patch, Snow Mt Range 914 Comment
  HSC100560  Prosartes hookeri Carl C. Marshall Apr 1887 392 Humboldt Hoopa Valley. Comment
  HSC15464  Prosartes hookeri D. E. Anderson 1965-5-15 3691 Humboldt About 7 mi. N of Hoopa on Bloody Camp Prairie Rd. Comment
  HSC57112  Prosartes hookeri Overton, Butler 1979-7-25 9855 Humboldt Near Ammon Creek, close to the town of Willow Creek. 671 Comment
  SBBG58721  Prosartes hookeri R. Hartwell 1938-8-4 107 Humboldt Bull Crk Flat Comment
  HSC15460  Prosartes hookeri D. E. Anderson 1963-5-25 2489 Humboldt 0.5 mi. S of Capetown Comment
  HSC15473  Prosartes smithii D. E. Anderson 1962-3-31 1959 Humboldt Old Hwy. 101, E side of Freshwater Lagoon Comment
  SEINET12044958  Prosartes smithii H. C. Cantelow 1936-1 s.n. Humboldt 11 mi E of Orick Comment
  HSC14311  Prunella vulgaris Paul Shields 1955-6-12 Humboldt 6 miles west of Meyers Flat Comment
  HSC74736  Prunella vulgaris Gail Newton 1981-7-24 2305 Humboldt Near Chaparral Mtn. 1433 Comment
  UC1541658  Prunella vulgaris Harold E. Parks May 1933 4309 Humboldt Spruce Cove Trinidad; Spruce Cove Comment
  HSC23126  Prunella vulgaris A. D. Maxfield 1967-7-12 2 Humboldt 400 yds. SW of Strawberry Creek and Dows Prairie Rd., McKinleyville 91 Comment
  BLMAR465  Prunus emarginata Jennifer Anthony-Wheeler 2004-11-8 465 Humboldt Titlow Hill, growing along Titlow Hill road off Hwy 299 914 Comment
  CAS-BOT-BC159988  Prunus emarginata Harley P. Chandler 1901-6-1 1273 Humboldt Hupa Indian Reservation 1066 Comment
  UC1198770  Prunus emarginata Joseph P. Tracy 1920-4-18 5314 Humboldt around Humboldt Bay (Mad River, near bridge on Trinidad Road); Northern Coast Region, Mad River 15 Comment
  UC249638  Prunus emarginata Joseph P. Tracy 1922-9-17 6116 Humboldt North Fork Mad River, at Korbel North Fork Mad River; Northern Coast Region, , Korbel 30 Comment
  CAS-BOT-BC154785  Prunus virginiana var. demissa Mrs. R. M. Austin 1894-6-1 s.n. Humboldt Willow Creek Valley Comment
  UC1198773  Prunus virginiana var. demissa Joseph P. Tracy 1933-5-14 12176 Humboldt Trinity River Valley, at Willow Creek Willow Creek; Trinity River Valley, Willow Creek 152 Comment
  UC1198780  Prunus virginiana var. demissa Joseph P. Tracy 1926-10-14 7814 Humboldt near the South Fork (Trinity River Valley); Northern Coast Ranges, Trinity River Valley 182 Comment
  UC1222309  Prunus virginiana var. demissa Joseph P. Tracy 1950-6-25 18881 Humboldt Buck Mountain, on the Burr Valley Road Buck Mountain; , Burr Valley Road 1066 Comment
  HSC5685  Pseudognaphalium californicum J. P. Tracy 1937-7-11 15415 Humboldt Vicinity of Garberville 122 Comment
  UC127827  Pseudognaphalium californicum Joseph Burtt Davy and Walter C. Blasdale 1899-6-26 5890 Humboldt Francis Ridge Comment
  UC582515  Pseudognaphalium ramosissimum Joseph P. Tracy 1936-8-24 15169 Humboldt 6 mi se Arcata; Fickle Hill 609 Comment
  HSC40252  Pseudognaphalium stramineum Linda M. Barker 1976-8-24 1685 Humboldt 3 mi. W of Arcata Comment
  BLMAR110  Pseudognaphalium stramineum Jennifer Anthony-Wheeler 1994-9-8 110 Humboldt Samoa dunes, growing atop a knoll/dune with I the Samoa Pen. Rare plant area 15 Comment
  UC582516  Pseudognaphalium thermale Joseph P. Tracy 1935-7-31 14388 Humboldt Salmon Summit 1767 Comment
  HSC102507  Pseudotsuga menziesii M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-28 1492 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1106 Comment
  UC1223165  Psilocarphus tenellus Joseph P. Tracy 1948-6-13 18056 Humboldt 3 mi w Harris 762 Comment
  SEINET11793951  Psilocarphus tenellus var. tenellus J. P. Tracy 1942-1 17293 Humboldt 1 mi N of Redwood House, valley of South Yager Creek 610 Comment
  HSC18481  Pteridium aquilinum var. pubescens Jana Kattenhorn 1970-10-24 108 Humboldt H.S.C. Campus, Arcata Comment
  HSC36274  Pteridium aquilinum var. pubescens John Rehling 1974-7-8 11 Humboldt Along Bald Hills Rd. 23.5 mi. from Hwy. 101 Comment
  UC1222154  Pterospora andromedea Joseph P. Tracy 1950-8-8 19274 Humboldt 3 mi e Box Camp; Trinity Summit Comment
  HSC54554  Pyrola dentata Overton, Butler 1979-7-24 9560 Humboldt Near Titlow Hill, close to the town of Willow Creek 1097 Comment
  UC32690  Pyrola picta Chestnut and Drew 1888-7-21 Humboldt South Fork Mts. Comment
  CAS-BOT-BC466038  Pyrola picta L. B. Kildale 1930-8-3 10364 Humboldt Chaparral Mt. near Bug Creek 914 Comment
  UCD117815  Pyrola picta D. C. Hagar 1957-6-17 L 8 Humboldt Happy Camp Mountain, 5 miles northeast of Salyer. 1280 Comment
  HSC54661  Quercus chrysolepis Overton, Butler 1979-7-25 9887 Humboldt Near Sims Mtn., close to the town of Willow Creek 1295 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
  UC1196534  Quercus chrysolepis Joseph P. Tracy 1911-6-8 3446 Humboldt near Mouth of Willow Creek; Northern Coast Ranges, Valley of Trinity River 152 Comment
  UC503089  Quercus chrysolepis H. E. Parks and Joseph P. Tracy 1931-5-17 9413 Humboldt opposite Willow Creek; Northern Coast Ranges, Trinity River Valley 152 Comment
  UC54679  Quercus chrysolepis P. E. Goddard 1901-7-12 59 Humboldt Hupa Comment
  UCD82872  Quercus chrysolepis Rodney Gale Myatt 1971-9-21 1185 -14 Humboldt Near Orleans, northeast of Hoopa Reservation, along Klamath River. 185 Comment
  UC1193249  Quercus garryana R. H. Neuns 1950-7-31 Humboldt Mail Ridge, e headwaters of Stuhead Creek Mail Ridge, Stuhead Creek 883 Comment
  HSC98850  Quercus garryana var. garryana Cara Witte 2008-9-13 1037 Humboldt Forest Service Road 4N06. 1/4 mile east of intersection with National Forest 1. Cow Creek Ridge. 1283 Comment
  CAS-BOT-BC105168  Quercus kelloggii Doris K. Kildale 1928-10-7 6746 Humboldt Willow Creek Flat on Trinity River Comment
  HSC68607  Quercus kelloggii Jacqueline Greenleaf 1980-8-12 329 Humboldt Near Becker Cabin. 1143 Comment
  SEINET4291710 Image available Quercus kelloggii Unknown 1966-1 660024 Humboldt Avenue of Giants, near Phillipsville. Comment
  CAS-BOT-BC104331  Quercus sadleriana Clarence R. Quick 1960-6-27 60 -23 Humboldt Bear Gulch on road from Delta to Trinity Center Comment
  CAS-BOT-BC104537  Quercus vacciniifolia Doris K. Kildale 1928-10-7 6747 Humboldt Willow Creek Canyon 7 miles from mouth Comment
  CAS-BOT-BC186671  Ranunculus Mrs. H. C. Cantelow 1936-5-18 1388 Humboldt 8 mi. N. of Orick nr. Corkscrew Tree Comment
  HSC74708  Ranunculus aquatilis var. aquatilis Gail Newton 1981-8-6 2400 Humboldt Near Humbug Creek 1256 Comment
  UC594250  Ranunculus aquatilis var. hispidulus C. C. and S. K. Harris 1936-6-12 3363 Humboldt near Bridgeville; Chalk Mountain Comment
  POM118706  Ranunculus californicus Marcus E. Jones 1924-4-26 s.n. Humboldt Eureka. Comment
  UC162876  Ranunculus californicus J. P. Tracy 1901-5-30 1107 1/2 Humboldt Immediate Vicinity of Eureka 0 Comment
  SEINET13716687  Ranunculus californicus Unknown 1916-4-30 4681 Humboldt Around Humboldt Bay Comment
  UC1196236  Ranunculus californicus Joseph P. Tracy 1912-5-5 3578 Humboldt Eureka Northern Coast Region 0 Comment
  UC162875  Ranunculus californicus Joseph P. Tracy 1901-4-26 1044 Humboldt e Fields Landing; Northern Coast Region, Region about Humboldt Bay, Humboldt H 0 Comment
  HSC18137  Ranunculus californicus var. californicus C. O. Baker 1962-3-22 8 Humboldt 2 mi. S of Trinidad along old Hwy. 101 183 Comment
  HSC18153  Ranunculus muricatus T. W. Beck 1963-5-10 50 Humboldt Camp Bauer, Korbel Comment
  HSC96199  Ranunculus occidentalis Andrew Byers, Stuart E. Richardson III 2005-6-3 1 Humboldt 19.3 mi. S of Hwy. 299 on NF1 1205 Comment
  JEPS55087  Ranunculus occidentalis Joseph P. Tracy 1918-5-28 4948 Humboldt High Prairie Northern Coast Ranges, Bald Mountain 1066 Comment
  JEPS79959  Ranunculus occidentalis Joseph P. Tracy 1932-7-18 10701 Humboldt head of Brett Hole Klamath Mountains, Trinity Summit 1828 Comment
  UC1196228  Ranunculus occidentalis Joseph P. Tracy 1933-7-11 12666 Humboldt Horse Mountain Northern Coast Ranges 1402 Comment
  JEPS55183  Ranunculus occidentalis W. L. Jepson 1902-6-20 1895 Humboldt Fort Seward Ranch Ridge Comment
  HSC82102  Ranunculus occidentalis var. occidentalis Thomas W. Nelson, Jane P. Nelson 1980-5-25 5266 Humboldt Along road from Dinsmore to Anderson Crossing- McKeown Ranch Rd.- 0.5 mi. NW of McKeown house 823 Comment
  UC249653  Ranunculus orthorhynchus var. orthorhynchus Joseph P. Tracy 1922-5-21 6050 Humboldt Fieldbrook Northern Coast Ranges 60 Comment
  UC160952  Ranunculus repens Joseph P. Tracy 1910-6-5 3150 Humboldt region about Humboldt Bay Northern Coast Region (marshes) 0 Comment
  RSA399439  Ranunculus repens R. S. Woglum 1938-8-29 2036 Humboldt State Park Grounds, S of Trinidad. Comment
  SD93107  Ranunculus repens W. Bertsch 1953-7-30 Humboldt Five miles north of Arcata Comment
  HSC18203  Ranunculus repens var. repens Richard Steele 1962-5-1 20 Humboldt Arcata, 0.5 mi. W of HSC campus 15 Comment
  HSC18195  Ranunculus uncinatus var. parviflorus E. W. Styskel 1963-5-19 40 Humboldt 3 mi. SE of Korbel on Snow Camp Rd. 305 Comment
  HSC6887  Raphanus sativus S. J. Hawks 1965-4-3 12 Humboldt W of Eureka City Airport Comment
  HSC59688  Raphanus sativus George Kirn 1977-9-10 Humboldt Eureka, G and 1st St. 8 Comment
  UC1197997  Rhamnus californica Joseph P. Tracy 1934-8-4 13555 Humboldt Willow Creek Trinity River Valley 152 Comment
  JEPS41986  Rhamnus californica subsp. californica W. L. Jepson 1936-8-12 17884 Humboldt Phillipsville South Fork Eel River Comment
  RSA7737  Rhamnus californica subsp. occidentalis Doris K. Kildale 1928-10-7 6748 Humboldt Willow Creek Canyon, 7 miles W of Trinity River Comment
  JEPS41976  Rhamnus purshiana W. L. Jepson 1936-8-18 17942 Humboldt Wildcat Ridge, w Humboldt Co. Wildcat Ridge Comment
  RSA390632  Rhamnus purshiana Christopher Davidson 1973-5-29 2203 Humboldt 2 miles S of Carlotta on Hwy 36 61 Comment
  UCR136663  Rhamnus purshiana H. E. Parks, S. T. Parks 1937-1 24018 Humboldt North Coast, Spruce Cove, Trinidad Comment
  CAS-BOT-BC58193  Rhododendron columbianum Doris K. Kildale 1926-2-7 1500 Humboldt Big Lagoon. Comment
  HSC36263  Rhododendron columbianum John Rehling 1974-8-20 25 Humboldt Big Lagoon Bog Comment
  RSA69211  Rhododendron macrophyllum A. D. Tenney 1925-04 6020 Humboldt Arcata. Comment
  UC1121079  Rhododendron occidentale H. L. Person 1930-6-20 Humboldt Bayside Road e of Arcata; Bayside Road Comment
  HSC7893  Rhododendron occidentale var. paludosum D. E. Anderson 1961-9-30 1845 Humboldt Divide Lake Comment
  CAS-BOT-BC92877  Ribes bracteosum Joseph P. Tracy 1938-8-14 16105 Humboldt Willow Creek Canyon, along Trinity Highway. 762 Comment
  HSC100491  Ribes divaricatum Carl C. Marshall Apr 1886 171 Humboldt Vicinity of Humboldt Bay. Comment
  CAS-BOT-BC108909  Ribes divaricatum var. pubiflorum Doris K. Kildale 1926-3-25 1619 Humboldt Liscom Hill. Lower Mad River. 30 Comment
  UC667074  Ribes inerme var. klamathense Joseph P. Tracy 1939-5-14 16297 Humboldt opposite Buck Mountain (Dinsmore's); Van Duzen River 762 Comment
  HSC57642  Ribes lacustre G. L. Clifton, Griswold 1979-7-25 10806 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1814 Comment
  UC667070  Ribes lacustre Joseph P. Tracy 1933-7-16 12784 Humboldt near McKay Camp; South Fork Mountain 1676 Comment
  UC56313  Ribes laxiflorum J. P. Tracy 1897-4-8 Humboldt Eureka Comment
  CAS-BOT-BC173363  Ribes lobbii L. R. Abrams 1918-6-14 7091 Humboldt Three Creeks Comment
  JEPS49210  Ribes menziesii Harley P. Chandler May, 1901 1117 Humboldt Humboldt Bay North Coast Ranges 304 Comment
  SJSU7838  Ribes menziesii R. D. Spadoni 1965-3-26 108 Humboldt Trinidad Comment
  UC1198932  Ribes menziesii Joseph P. Tracy 1921-3-13 5421 Humboldt near Alton (Drake's Hill); Northern Coast Region 30 Comment
  UC1198934  Ribes menziesii Joseph P. Tracy 1918-5-12 4933 Humboldt Eureka Northern Coast Ranges 0 Comment
  UC1541331  Ribes menziesii Harold E. Parks April 1933 4402 Humboldt vicinity Trinidad (type locality) Comment
  UC583437  Ribes menziesii Elmer I. Applegate 1931-3-28 6625 Humboldt Trinidad, type locality Trinidad Comment
  CAS-BOT-BC212653  Ribes nevadense W. R. Dudley 1901-8-25 s.n. Humboldt Near the 14 mile post, Salmon Creek, Salmon Mountains Comment
  HSC32154  Ribes roezlii D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5594 Humboldt Mt. Lassic and two smaller peaks to immediate E 1768 Comment
  JEPS49455  Ribes roezlii var. cruentum P. E. Goddard 1901-7 83 1/2 Humboldt Hupa Comment
  RSA0018248  Ribes sanguineum var. glutinosum C. Epling, Wm. Robinson 1935-7-22 s.n. Humboldt Patrick s Point. Comment
  HSC103195  Ribes sanguineum var. sanguineum Jade Paget-Seekins 2010-6-30 31 Humboldt Grouse Mountain on Forest Route 1 at the fork with Grouse Mountain Road. 1578 Comment
  HSC97472  Ribes sanguineum var. sanguineum C. Witte 2007-5-17 32 Humboldt National Forest Road 5N10. 1/2 mile east of intersection with National Forest 1. 1441 Comment
  UC463025  Ribes victoris E. B. Copeland 1931-8-18 Humboldt below Densmore; Van Duzen River Comment
  HSC96223  Ribes viscosissimum Eric Schori, Kazuyuki Ishimaru 2005-6-15 10 Humboldt 17 mi. S of Hwy. 299, S bank of roadside 1575 Comment
  JEPS79969 Image available Ribes viscosissimum Joseph P. Tracy 1932-7-12 10466 Humboldt ridges e of Corral Prairie (Klamath Mountains, Trinity Summit); Klamath Mountains, Trinity Summit 1828 Comment
  UC492213  Ribes viscosissimum Joseph P. Tracy 1932-7-12 10466 Humboldt ridges e of Corral Prairie (Klamath Mountains, Trinity Summit); Klamath Mountains, Trinity Summit 1828 Comment
  UC667028 Image available Ribes viscosissimum Joseph P. Tracy 1933-7-16 12788 Humboldt near McKay Camp; South Fork Mountain 1676 Comment
  UC902089 Image available Ribes viscosissimum Joseph P. Tracy 1942-6-23 17239 Humboldt near Box Camp; Trinity Summit 1524 Comment
  HSC13753  Romanzoffia californica Lincoln Constance, R. C. Rollins 1942-5-11 2870 Humboldt 3 mi. E of E Fork of Willow Creek Comment
  HSC56123  Romanzoffia sitchensis G. L. Clifton, Griswold 1979-8-1 11910 Humboldt Near Mill Creek Lakes, close to the town of Hoopa. 1692 Comment
  HSC12697  Rorippa curvisiliqua Jana Kattenhorn 1970-10-28 146 Humboldt Mad River at the mouth of Lindsey Creek, N Bank Rd. off Hwy. 299 Comment
  UC198651  Rorippa curvisiliqua Joseph P. Tracy 1916-5-31 4693 Humboldt along Eel River from South Fork to Scotia (Holmes Flat); Northern Coast Ranges, along Eel River 60 Comment
  UC1199222  Rorippa nasturtium-aquaticum Joseph P. Tracy 1927-7-17 8280 Humboldt on lower western foothills Chaparral Mountain (Three Cabins); Northern Coast Ranges, western foothills Chaparral Mountain 457 Comment
  OBI5836  Rosa eglanteria Carl B. Wolf 1931-8-28 2363 Humboldt 1/8 mi from Rohnerville on road to Fortuna 30 Comment
  HSC47952  Rosa gymnocarpa Brad Klipfel 1974-7-27 493 Humboldt Horse Mtn. Comment
  OBI35864  Rosa gymnocarpa David J. Keil 1983-7-2 17330 Humboldt Horse Mtn Summit SW of Willow crk Comment
  RSA254749  Rosa gymnocarpa Thomas W. Nelson, J. Nelson 1973-5-28 957 Humboldt McKeown Ranch north of Dinsmore. Comment
  SEINET11912074  Rosa gymnocarpa F. H. Utech, Sato, T.; Ohara, M. 1990-1 90 -284 Humboldt Humboldt Redwoods State Park, Jensen Grove 50 Comment
  CAS-BOT-BC146829  Rosa nutkana Doris K. Kildale 1927-7-10 3724 Humboldt Gans Prairie on Bald Hills road 609 Comment
  HSC19617  Rosa nutkana A. E. Inman 1962-5-25 Humboldt N bank of Mad River, S of Azalea Hill Rd. Comment
  HSC19632  Rosa nutkana W. A. Heaton 1965-5-17 12 Humboldt 1/2 mi. N of Trinidad St. Park Comment
  JEPS45644  Rosa nutkana var. nutkana Milo S. Baker 1923-7-15 11 Humboldt outskirts of Eureka Comment
  UC588191  Rosa nutkana var. nutkana H. E. and S. T. Parks June, 1937 24021 Humboldt Spruce Cove Trinidad Comment
  POM275415  Rosa pinetorum Lyman D. Benson 1928-7-12 s.n. Humboldt Clam Beach, Trinidad. 15 Comment
  CAS-BOT-BC148224  Rosa spithamea Doris K. Kildale; L. B. Kildale 1930-5-24 9549 Humboldt Hoopa Valley 152 Comment
  RSA21585  Rosa spithamea Carl B. Wolf 1937-8-13 9230 Humboldt North coast range, 8 mi. east of Hoopa Valley on new road towards Trinity summit. 1220 Comment
  UCD113775  Rubus armeniacus K. Twitchell 1996-5-11 27 Humboldt Crannell, along old Highway 101 at Moonstone Beach access. 36 Comment
  RSA89565  Rubus discolor Philip A. Munz 1954-7-23 19864 Humboldt 5 miles SE of Carlotta Comment
  RSA89566  Rubus discolor Philip A. Munz 1954-7-23 19864 Humboldt 5 miles SE of Carlotta Comment
  POM182019  Rubus laciniatus F. W. Peirson 1923-7-10 3755 Humboldt Wood border opening near road about 6 miles N of Garberville. Comment
  CAS-BOT-BC148385  Rubus leucodermis Doris K. Kildale 1927-5-13 3138 Humboldt Redwood Creek at Berry's 289 Comment
  UC183625  Rubus leucodermis Joseph P. Tracy 1913-6-14 4127 Humboldt opposite Buck Mountain (Dinsmore's Ranch, in Valley of Van Duzen River); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  UC902131  Rubus leucodermis Joseph P. Tracy 1947-8-24 17911 Humboldt near Box Camp; Trinity Summit 1524 Comment
  CAS-BOT-BC147240  Rubus parviflorus Henry M. Pollard 1946-8-28 s.n. Humboldt Near summit of Orleans Mt. 1828 Comment
  UC666864  Rubus parviflorus Joseph P. Tracy 1936-8-7 15104 Humboldt head of Little Hors-Linto Creek Trinity Summit 1524 Comment
  UCR3512  Rubus parviflorus David Whistler, H. M. Whistler 1964-8-1 640801- 5 Humboldt Coast Range, US Hwy 299, 6 mi east of Blue Lake Comment
  CHSC59811  Rubus spectabilis Jordan Detzer 1977-4-8 6 Humboldt South end of Patrick's Point State Park, ca 0.2 mi west of Hwy 101 and 5 mi north of Trinidad. 60 Comment
  HSC22039  Rubus spectabilis B. D. Rogers, D. E. Anderson 1965-4-1 412 Humboldt 4 mi. SE of Arcata along Jacoby Creek Comment
  POM271106  Rubus spectabilis Lyman D. Benson 1929-7-15 1816 Humboldt Clam Beach, Trinidad. Comment
  CAS-BOT-BC158790  Rubus ursinus J. P. Tracy 1902-7-4 1759 Humboldt Immediate vicinity of Eureka 152 Comment
  HSC96515  Rubus ursinus Gordon Leppig 1998-5-11 762 Humboldt Big Lagoon County Park. 3 Comment
  UCD17617  Rubus ursinus H. Olmo; T. S. Mallah 1946-6-26 46- 047 Humboldt California. Humboldt County: 6.6 miles north of Ettersburg on road to Honeydew. Comment
  UCD17618  Rubus ursinus H. Olmo; T. S. Mallah 1946-6-26 46- 046 Humboldt California. Humboldt County: 6.6 miles north of Ettersburg on road to Honeydew. Comment
  UCD17928  Rubus ursinus H. Olmo; T. S. Mallah 1953-4-3 53 60 Humboldt California. Humboldt County: 0.5 miles south of cemetary alongside highway in Rohnerville. East of airport. Comment
  HSC56448  Rudbeckia klamathensis Griswold, Butler 1979-7-12 7201 Humboldt Near Groves Prairie, close to the town of Willow Creek. 1256 Comment
  HSC54014  Rumex acetosella Griswold, Butler 1979-7-12 7153 Humboldt Near Groves Prairie, close to the town of Willow Creek. 1256 Comment
  HSC76221  Rumex acetosella Overton, Butler 1979-7-24 9767 Humboldt Near Black Rock, close to the town of Willow Creek 1463 Comment
  HSC37233  Rumex acetosella Lon Hall 1975-6-19 399 Humboldt About 2 mi. N of Shelter Cove Rd. on Horse Mtn. Rd. 549 Comment
  HSC89469  Rumex acetosella P. A. Daly 1986-3-12 99 Humboldt Trinidad Head, along trail 61 Comment
  HSC75496  Rumex californicus J. O. Sawyer 1980-7-18 3638 Humboldt North Trinity Mountain Research Natural Area, north of Mill Creek Lake to Red Cap Hole. Comment
  CAS-BOT-BC421525  Rumex crassus Doris K. Kildale 1926-6-29 2242 Humboldt Mouth of Mad River Comment
  JEPS39876  Rumex crispus Lincoln Constance 1934-5-26 659 Humboldt near Founder's Tree (North Dyerville Flat grove); South Fork Eel River, Bull Creek Region, North Dyerville Fla 48 Comment
  UC1225804  Rumex crispus Joseph P. Tracy 1946-7-7 17609 Humboldt Willow Creek Trinity River Valley 152 Comment
  UCD101361  Rumex occidentalis Joseph P. Tracy 1948-9-12 18208 Humboldt Trinity Summit. Box Camp. 1463 Comment
  HSC98929  Rupertia physodes Cara Witte 2007-6-14 280 Humboldt Along National Forest 1 on Kinsey Ridge. 1/2 mile north of White Oak Opening. 1258 Comment
  SEINET3893324  Ruppia maritima Rick Lundquist 1979-5-31 111 Humboldt Arcata South Quadrangle. At south end of H Street.; 0 0 Comment
  UC1103258  Rytidosperma penicillatum Joseph P. Tracy 1949-8-11 18451 Humboldt on the Bald Mt. road near Angels Ranch; Hungry Hollow 762 Comment
  UC709433  Rytidosperma penicillatum Joseph P. Tracy 1941-8-17 16994 Humboldt Hungry Hollow Bald Mt. 762 Comment
  UCD92351  Rytidosperma penicillatum R. Tofsrud 1947-7-1 200 Humboldt near Loleta. Comment
  UC1116232  Sagina apetala Joseph P. Tracy 1948-4-11 17965 Humboldt 2 mi. e. Dyerville (Eel R.); Eel R. 48 Comment
  UC668107  Sagina apetala Joseph P. Tracy 1932-5-1 9839 Humboldt along Van Duzen R. Alton; North Coast Ranges, Van Duzen R. 30 Comment
  POM151674  Sagina decumbens subsp. occidentalis Joseph P. Tracy 1905-4-30 2172 Humboldt Sand Dunes of Ocean Beach at Humboldt Bay. Comment
  BLMAR466  Salicornia depressa Jennifer Anthony-Wheeler 2007-8-28 466 Humboldt South Spit 6 Comment
  HSC93476  Salicornia depressa Gordon Leppig 1998-8-6 995 Humboldt Arcata Marsh and Wildlife Sanctuary; Humboldt Bay side of Klopp Lake dike 2 Comment
  CDA15324  Salicornia perennis R. Spadoni 1998-10-5 s.n. Humboldt North Coast; Near Loleta. 0 Comment
  CAS-BOT-BC132667  Salix A. T. Whittemore 1980-3-15 80 -001 Humboldt Arcata, in residential area, along Alliance Road from Foster Ave. to the railroad tracks Comment
  CAS-BOT-BC129885  Salix bonplandiana Mrs. H. P. Bracelin 1931-5-1 272 Humboldt Sylvandale, between Miranda and Meyers, South Fork of Eel River Comment
  CAS-BOT-BC104115  Salix hindsiana Joseph P. Tracy 1933-5-19 12203 Humboldt Eel River, Alton to Fortuna 15 Comment
  RSA0038361  Salix hindsiana var. leucodendroides Harold E. Parks 1931-8-25 01061 Humboldt Blue Slide, Van Duzen River. 90 Comment
  CAS-BOT-BC107706  Salix hookeriana Harold E. Parks 1931-3-24 915 a Humboldt Trinidad 90 Comment
  CAS-BOT-BC107722  Salix hookeriana Joseph P. Tracy 1936-10-24 15203 Humboldt Fortuna, on bank of Eel River 15 Comment
  CAS-BOT-BC107733  Salix hookeriana Harold E. Parks; Susan T. Parks 1932-4-10 1103 a Humboldt Little River Lagoon, Trinidad Comment
  CAS-BOT-BC107745  Salix hookeriana Carleton R. Ball; Harold E. Parks; Joseph P. Tracy 1932-5-11 1216 Humboldt In pine barrens near the coast, 1 mile north of Samoa Comment
  CAS-BOT-BC107750  Salix hookeriana Harold E. Parks 1931-5-12 955 Humboldt Samoa, Humboldt Bay Comment
  HSC19963  Salix hookeriana H. E. Parks, S. T. Parks 1932-4-15 1103 Humboldt Near mouth of the Little River Comment
  HSC20150  Salix hookeriana Francis Winter 1960-3-26 Humboldt Samoa Peninsula 6 mi. W of Arcata Comment
  HSC90433  Salix hookeriana Jean Hanson 1980-3-8 18 Humboldt Indian (Gunther) Island, Humboldt Bay, Eureka, W end of island Comment
  HSC96374  Salix hookeriana Gordon Leppig 1999-7-9 1186 Humboldt Big Lagoon County Park; Big Lagoon Bog 3 Comment
  POM160840  Salix hookeriana Joseph P. Tracy 1925-10-11 7280 Humboldt Near Loren Frost place, on Kneeland Road. Near Kneeland Prairie. 610 Comment
  POM219535  Salix hookeriana H. E. Parks 1931-5-12 954 Humboldt Samoa. Humboldt Bay. Near sea level. 0 Comment
  RSA342503  Salix hookeriana Robert F. Thorne, Percy C. Everett 1965-8-9 35299 Humboldt Big Lagoon. 3 Comment
  RSA5644  Salix hookeriana H. E. Parks 1931-5-28 1000 Humboldt Little River Lagoon. 0 Comment
  SBBG59105  Salix hookeriana H. E. Parks 1931-5-12 952 Humboldt Samoa, Humboldt Bay Comment
  SD936  Salix hookeriana Harold E. Parks 1931-3-24 914 Humboldt Fortuna, on banks of Eel River 10 Comment
  UC1196557  Salix hookeriana Joseph P. Tracy 1933-11-12 13114 Humboldt along S. Fork Eel R. Miranda; North Coast Ranges 91 Comment
  UC1196676  Salix hookeriana Joseph P. Tracy 1931-3-26 9304 Humboldt near Alton; Northern Coast Ranges, Van Duzen River 30 Comment
  UC249537  Salix hookeriana Joseph P. Tracy 1922-3-26 5984 Humboldt Fieldbrook Northern Coast Region 60 Comment
  UC275497  Salix hookeriana Joseph P. Tracy 1925-4-5 6951 Humboldt near Kneeland Prairie (near Loren Frost place on Kneeland Rd.); Northern Coast Ranges 609 Comment
  UC275498  Salix hookeriana Joseph P. Tracy 1925-10-11 7280 Humboldt near Kneeland Prairie (near Loren Frost place on Kneeland Rd.); Northern Coast Ranges 609 Comment
  UC470430  Salix hookeriana Joseph P. Tracy 1931-5-23 9435 Humboldt near Trinidad Station; Northern Coast Region, vicinity of Trinidad 60 Comment
  UC470434  Salix hookeriana Joseph P. Tracy 1931-10-18 9742 Humboldt Camp Grant Northern Coast Ranges, Eel River 60 Comment
  UC495607  Salix hookeriana Joseph P. Tracy 1932-10-12 10873 Humboldt S. Fork Eel R. Miranda; Northern Coast Ranges, S. Fork Eel R. 121 Comment
  UC495608  Salix hookeriana Joseph P. Tracy 1932-3-13 9777 Humboldt S. Fork Eel R. Miranda; Northern Coast Ranges, S. Fork Eel R. 121 Comment
  UC512111  Salix hookeriana Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-11 1204 Humboldt 4 1/2 mi s Trinidad; Little River Lagoon Comment
  UC517961  Salix laevigata M. S. Jussel 1931-5-1 Humboldt Sylvandale Comment
  UC519383  Salix lasiandra subsp. lasiandra Joseph P. Tracy 1933-5-14 12179 Humboldt at Willow Creek bridge Willow Creek; Northern Coast Ranges, Trinity River Valley 152 Comment
  CAS-BOT-BC125219  Salix lasiandra var. lasiandra Harold E. Parks 1931-3-24 0911 Humboldt Fortuna, on banks of Eel River 10 Comment
  HSC96616  Salix lasiandra var. lasiandra Gordon Leppig 2005-4-8 2205 Humboldt N Spit Swamp, W side of highway 3 Comment
  CAS-BOT-BC107103  Salix lasiolepis Joseph P. Tracy 1931-9-26 9695 Humboldt Redwood Creek, at Berry's 274 Comment
  CAS-BOT-BC107582  Salix lasiolepis Joseph P. Tracy; Carleton R. Ball; Harold E. Parks 1932-5-13 1255 Humboldt Floodplain of Mad River at Engelhart gravel pit, 2 miles east of Redwood Highway and above Blue Lake Road Comment
  CAS-BOT-BC107590  Salix lasiolepis Joseph P. Tracy; Carleton R. Ball; Harold E. Parks 1932-5-17 1321 Humboldt On banks of Redwood Creek, at Berry's, on Trinity Highway 274 Comment
  CAS-BOT-BC107604  Salix lasiolepis Joseph P. Tracy; Harold E. Parks; Carleton R. Ball 1932-5-12 1236 Humboldt Gravelly floodplain of the Van Duzen River at Blue Slide 91 Comment
  CAS-BOT-BC107620  Salix lasiolepis Doris K. Kildale 1929-2-28 6952 Humboldt Samoa Peninsula Comment
  HSC70352  Salix lasiolepis M. A. Baker 1980-6-7 1841 Humboldt Near Ammon Creek 732 Comment
  JEPS12943  Salix lasiolepis Joseph P. Tracy 1930-6-15 8737 Humboldt near Bosworth's Larrabee Creek; Northern Coast Ranges 457 Comment
  POM161046  Salix lasiolepis Joseph P. Tracy 1926-9-19 7801 Humboldt Valley of S Yager Creek 762 Comment
  UC490467  Salix lasiolepis Joseph P. Tracy 1932-9-5 10768 Humboldt near Petrolia; North Coast Region, Mattole River 15 Comment
  UC490468  Salix lasiolepis Joseph P. Tracy 1932-9-5 10768 Humboldt near Petrolia; North Coast Region, Mattole River 15 Comment
  UC504025  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
  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
  UC519340  Salix lasiolepis Joseph P. Tracy 1932-10-8 10866 Humboldt Berry's Mt. Northern Coast Ranges (on Trinity Hwy) 762 Comment
  UC519344  Salix lasiolepis Joseph P. Tracy 1933-10-15 13090 Humboldt along river near Miranda; Coast Ranges, South Fork of Eel River 91 Comment
  UC526719  Salix lasiolepis Joseph P. Tracy 1934-4-8 13171 Humboldt between Miranda and Redway (S. Fork Eel R.); North Coast Ranges, S. Fork Eel R. 91 Comment
  CAS-BOT-BC107289  Salix lasiolepis var. bigelovii Carleton R. Ball; Harold E. Parks; Joseph P. Tracy 1932-5-17 01333 Humboldt in channel of Trinity River, near bridge on Trinity Highway 152 Comment
  CAS-BOT-BC107418  Salix lasiolepis var. lasiolepis Doris K. Kildale 1926-4-1 1701 Humboldt [Dobbyns] Dobbyn Creek Comment
  UC279091  Salix lemmonii J. P. Tracy Humboldt Comment
  CAS-BOT-BC125616  Salix melanopsis W. R. Dudley 1899-6-21 s.n. Humboldt At the junction of the North and South forks of Eel River Comment
  UC1196567  Salix melanopsis Joseph P. Tracy 1932-5-1 9847 Humboldt along Van Duzen R. Alton; North Coast Ranges, Van Duzen R. 30 Comment
  UC1196575  Salix melanopsis Joseph P. Tracy 1931-9-7 9633 Humboldt Trinity R. Valley at Willow Creek bridge; Northern Coast Ranges, Trinity R. Valley, Willow Creek 152 Comment
  UC1196639  Salix melanopsis Joseph P. Tracy 1932-8-27 10756 Humboldt along Van Duzen R. Alton; North Coast Ranges, Van Duzen R. 30 Comment
  UC198573  Salix melanopsis Joseph P. Tracy 1916-9-5 4776 Humboldt 4 mi. above mouth S. Fork Eel R.; Northern Coast Ranges, S. Fork Eel R. 60 Comment
  UC469450  Salix melanopsis Joseph P. Tracy 1931-6-14 9580 Humboldt Van Duzen R., Alton Alton; Northern Coast Region, Van Duzen R., Alton 30 Comment
  UC469454  Salix melanopsis Joseph P. Tracy 1931-9-7 9634 Humboldt Trinity R. Valley at Willow Creek Bridge; Northern Coast Ranges, Trinity R. Valley, Willow Creek 152 Comment
  UC481169  Salix melanopsis Harold E. Parks 1931-8-25 1061 Humboldt Van Duzen R. Blue Slide; , Blue Slide 90 Comment
  UC481297  Salix melanopsis Harold E. Parks and Joseph P. Tracy 1931-5-17 967 Humboldt mouth of Willow Creek at Trinity R.; Willow Creek 150 Comment
  UC519377  Salix melanopsis Joseph P. Tracy 1933-5-20 12258 Humboldt Mattole R. near Petrolia; North Coast Region, Mattole R. 15 Comment
  UC519378  Salix melanopsis Joseph P. Tracy 1933-5-20 12259 Humboldt Mattole R. near Petrolia; North Coast Region, Mattole R. 15 Comment
  UC212994  Salix purpurea Joseph P. Tracy 1920-2-29 5307 Humboldt Ryan's Slough Northern Coast Region, Humboldt Bay, Ryan's Slough 15 Comment
  CAS-BOT-BC129159  Salix scouleriana Joseph P. Tracy 1937-3-21 15237 Humboldt Van Duzen River, near Grizzly Creek 91 Comment
  CAS-BOT-BC129161  Salix scouleriana Joseph P. Tracy 1936-2-2 14766 Humboldt Vicinity of Carlotta 30 Comment
  UC481272  Salix scouleriana Harold E. Parks 1931-5-28 1017 Humboldt edge of dunes Little River Lagoon Comment
  UC506513  Salix scouleriana B. S. and C. S. Ball 1932-9-12 2532 Humboldt 2 mi. n. Trinidad (home of Mr. and Mrs. Harold E. Parks) Comment
  UC54927  Salix scouleriana J. P. Tracy 1900-12-30 977 Humboldt immediate vicinity Eureka 0 Comment
  CAS-BOT-BC128984  Salix sitchensis Harold E. Parks 1931-3-24 910 Humboldt Trinidad 90 Comment
  HSC56143  Salix sitchensis G. L. Clifton, Griswold 1979-8-1 11971 Humboldt Near Mill Creek Lakes, close to the town of Hoopa 1707 Comment
  HSC96615  Salix sitchensis Gordon Leppig 2005-4-8 2206 Humboldt N Spit Swamp, W side of highway 3 Comment
  UC1196712  Salix sitchensis Joseph P. Tracy 1935-3-3 13716 Humboldt near mouth Mad R. 6 Comment
  UC1356345  Salix sitchensis Theodore J. Crovello 1965-4-8 669 Humboldt 2.5 mi. s. of turnoff to Prairie Creek Redwood State Park (along Lost Man Creek at junction with U.S. 101); Lost Man Creek Comment
  UC481382  Salix sitchensis Harold E. Parks 1931-3-26 906 Humboldt on Van Duzen R. Alton; Van Duzen R., Alton 15 Comment
  UC490501  Salix sitchensis Joseph P. Tracy 1932-10-2 10857 Humboldt Redwood Creek near Bair's; Northern Coast Ranges, Redwood Creek 213 Comment
  UC490532  Salix sitchensis Joseph P. Tracy 1932-7-18 10724 Humboldt head of Brett Hole; Klamath Mts., Trinity Summit 1828 Comment
  CDA39587  Salix sitchensis Gordon Leppig 2005-4-8 2206 Humboldt North Spit Swamp, west side of highway. Comment
  CDA39588  Salix sitchensis Peter Haggard 1993-4-17 s.n. Humboldt Van Duzen River west of Bridgeville on Hwy 36. 0 Comment
  UC1173598  Salix tracyi Joseph P. Tracy 1936-3-29 14785 Humboldt South Fork of Eel River, between Miranda and Redway 91 Comment
  HSC56447  Sambucus nigra subsp. caerulea Griswold, Butler 1979-7-12 7197 Humboldt Near Groves Prairie, close to the town of Willow Creek. 1256 Comment
  HSC36228  Sambucus racemosa var. racemosa John Rehling 1975-4-21 53 Humboldt Along Jolly Giant Creek behind HSU campus. Comment
  HSC3969  Sambucus racemosa var. racemosa E. W. Styskel 1963-4-2 13 Humboldt 3 mi. SE of Korbel on Snow Camp Rd. Comment
  JEPS13394  Sambucus racemosa var. racemosa Joseph P. Tracy 1932-7-14 10570 Humboldt ridges e Corral Prairie; Trinity Summit 1676 Comment
  UC1199042  Sanguisorba annua Joseph P. Tracy 1936-6-17 14974 Humboldt at crossing road from Bridgeville to Trinity Co. Little Van Duzen River 713 Comment
  UC180212  Sanguisorba officinalis subsp. microcephala Joseph P. Tracy 1914-9-6 4602 Humboldt Bald Mountain, between High Prarie and Snow Camp Northern Coast Ranges 1219 Comment
  HSC21611  Sanicula arctopoides R. D. Modafferi 1965-3-13 16 Humboldt 1 mi. N of Trinidad on Trinity St. 305 Comment
  HSC86305  Sanicula arctopoides K. Berg, Mike Roantree 1983-5-15 472 Humboldt Samoa Peninsula Comment
  HSC91933  Sanicula arctopoides E. Mackey 1987-6-11 Humboldt Patrick's Point State Park, Palmer's Point trail to beach Comment
  HSC39006  Sanicula bipinnatifida Thomas W. Nelson, Jane P. Nelson 1976-5-31 2648 Humboldt N of junction of FS Rds. 1S07 and 5E27 along 5E27 1524 Comment
  HSC21635  Sanicula crassicaulis D. V. Sanford 1963-4-23 42 Humboldt Comment
  HSC39448  Sanicula crassicaulis Linda M. Barker 1976-8-2 1669 Humboldt Lanphere- Christensen Dunes, 3 mi. W of Arcata Comment
  JEPS272  Sanicula crassicaulis W. L. Jepson 1932-7-30 16457 Humboldt Bull Creek 91 Comment
  UC1197097  Sanicula crassicaulis Joseph P. Tracy 1914-5-14 4426 Humboldt Northern Coast Ranges, Fort Seward Fort Seward; Northern Coast Ranges, Fort Seward 121 Comment
  HSC21636  Sanicula crassicaulis D. E. Anderson 1962-5-1 2193 Humboldt 1 mi. E of junction of Redwood Creek road and road to Hoopa Comment
  UC314594  Sanicula graveolens Joseph P. Tracy 1926-6-20 7648 Humboldt Northern Coast Ranges, Horse Mountain Horse Mountain; Northern Coast Ranges, Horse Mountain 1524 Comment
  UC642273  Sanicula graveolens Joseph P. Tracy 1932-7-12 10465 Humboldt Trinity Summit, Head of Brett Hole Brett Hole; Trinity Summit, Brett Hole 1828 Comment
  UCD128031  Sanicula laciniata R. N. Raynor 1935-3-2 s.n. Humboldt Fort Seward. Comment
  HSC101038  Sanicula tracyi A. Thoele, D. Pederson 1995-7-2 61 Humboldt East side of Pilot Creek, FB5 (fuel break) skid trail. 1188 Comment
  HSC34957  Sanicula tuberosa Thomas W. Nelson 1975-5-24 1863 Humboldt McKeown Ranch, N of Dinsmore. Comment
  HSC69867  Sanicula tuberosa Thomas W. Nelson 1978-5-28 4095 Humboldt McKeown Ranch, N of Dinsmore 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
  UCR39791  Sanicula tuberosa D. K. Imper 1982-7-13 s.n. Humboldt Six Rivers Nat. Forest, l mi. 6' north of Chaparral Mtn. 1375 Comment
  HSC98590  Sanicula tuberosa Cara Witte 2008-6-9 692 Humboldt Board Camp Butte. Forest Serivce Road 4E27. 1503 Comment
  JEPS62817  Satureja douglasii W. L. Jepson 1932-8-8 16485 Humboldt Canoe Creek Grasshopper Peak 1066 Comment
  POM232030  Satureja douglasii I. L. Wiggins 1930-7-11 4681 Humboldt Near Samoa. Comment
  UC25417  Satureja douglasii J. Burtt Davy 1899-6-11 5412 Humboldt Hubbards Station North Coast Ranges Comment
  POM141795  Saxifraga mertensiana Joseph P. Tracy 1911-6-4 3217 Humboldt Along Little River. 5 miles from the coast. 122 Comment
  RSA759802  Saxifraga mertensiana Barbara Ertter, Thomas J. Delendick 1987-5-16 6936 Humboldt 3 miles E of Berry Summit on Hwy 299, 20 airmiles E of Arcata, near large volcanic rock on S side of road above Willow Creek 800 Comment
  UC1988888  Saxifraga mertensiana Joseph P. Tracy 1927-3-27 7854 Humboldt near South Fork (Trinity River Valley along river); Northern Coast Ranges, Trinity River Valley 182 Comment
  HSC101990  Saxifraga nidifica M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-12 889 Humboldt Patterson Meadows 1555 Comment
  HSC102002  Saxifraga oregana M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-12 903 Humboldt Rustic Camp, northwest of Patterson Meadows 1512 Comment
  JEPS47545  Saxifraga oregana Joseph P. Tracy 1932-7-14 10566 Humboldt Trinity Summit, at Corral Prairie Trinity Summit; Klamath Mountains, , Corral Prairie 1524 Comment
  HSC74483  Saxifragopsis fragarioides Gail Newton 1980-7-24 1773 Humboldt Near Somes Mtn. 1615 Comment
  UC642324  Scandix pecten-veneris Joseph P. Tracy 1927-4-24 7926 Humboldt Eureka 15 Comment
  HSC7445  Schoenoplectus americanus J. W. Johnson 1962-4-18 1271 Humboldt Between the Mad River mouth and the Hunt Farm, Samoa Peninsula Comment
  UC1103491  Scoliopus bigelovii Joseph P. Tracy 1933-3-26 10941 Humboldt Big Lagoon 91 Comment
  UCD139809  Scoliopus bigelovii K. Esau 1934-4-1 s.n. Humboldt Above Fort Seward. Comment
  SEINET12050531  Scoliopus bigelovii F. H. Utech 1988-1 88 -023 Humboldt 0.1 mi N of Meyers Flat along Avenue of the Giants (alt. US 101), along South Fork Eel River 60 Comment
  SEINET12058060  Scoliopus bigelovii F. H. Utech 1988-3-4 88 -026 Humboldt 12.7 mi E on CA 36 from jct US 101 & Van Duzen River, Grizzly Creek Redwoods, O.R. Cheatam Grove 90 Comment
  HSC100444  Scorzonella procera Carl C. Marshall Jul 1886 263 Humboldt Bald Hills. Comment
  POM43296  Scrophularia californica Marcus E. Jones 1924-4-26 s.n. Humboldt Fortuna. Comment
  UC1011941  Scrophularia californica F. W. Pennell and J. P. Tracy 1940-7-6 26081 b Humboldt w Lolita (Table Bluff) 1 Comment
  UC582592  Scrophularia californica Joseph P. Tracy 1933-8-22 12980 Humboldt Eureka 6 Comment
  CDA41913  Scrophularia californica T. C. Fuller 1958-6-17 595 -58 Humboldt Wildcat Ridge near Bunker Hill. 0 Comment
  HSC58561  Scutellaria antirrhinoides Overton, Butler 1979-7-26 10108 Humboldt Near Cold Spring, close to the town of Willow Creek 1417 Comment
  UC162687  Scutellaria antirrhinoides Joseph P. Tracy 1911-7-7 3399 Humboldt 3 mi nw of junction of Willow Creek with Trinity River (near Beebe's Ranch); Northern Coast Ranges 914 Comment
  UC1713596  Scutellaria antirrhinoides Harold E. Parks and Joseph P. Tracy 1934-6-27 Humboldt Grouse Mountain 1432 Comment
  POM208993  Scutellaria antirrhinoides Lincoln Constance 1934-5-23 614 Humboldt Look Prairie, Bull Creek Watershed, Humboldt Redwood Park. 366 Comment
  UC577314  Scutellaria californica Joseph P. Tracy 1937-7-19 15453 Humboldt Buck Mountain 914 Comment
  HSC40703  Sedum laxum subsp. heckneri Thomas W. Nelson, Jane P. Nelson 1976-7-1 2898 Humboldt Along ridge N of Bear Creek 1463 Comment
  HSC76350  Sedum laxum subsp. heckneri Denis Kearns 1981-7-21 299 Humboldt Near Whiteys Peak 1585 Comment
  HSC76354  Sedum laxum subsp. heckneri Denis Kearns 1981-6-24 32 Humboldt Near Cedar Camp 1219 Comment
  HSC82131  Sedum laxum subsp. heckneri D. K. Imper 1985-6-18 Humboldt N and S of Whiteys Peak 1707 Comment
  JEPS109415  Sedum laxum subsp. heckneri D. W. Taylor 2004-6-24 19137 Humboldt Clear Lake, along Titlow Hill road. Comment
  HSC57458  Sedum obtusatum subsp. retusum G. L. Clifton, Griswold 1979-7-26 10290 Humboldt Near Salmon Mtn., close to the town of Forks of Salmon 1935 Comment
  HSC57996  Sedum obtusatum subsp. retusum G. L. Clifton, Griswold 1979-7-31 11759 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1805 Comment
  JEPS25682  Sedum spathulifolium P. C. Hutchison 1961-5-21 2005 A Humboldt hiway US 101, 1/2 mi s Holbrook Grove boundary (1/2 mi n of Redway, 3 1/4 mi n of Garberville, rocks e of hiway facing nw); s of Holbrook Grove boundary, n of Redway, n of Garberville 167 Comment
  SEINET12218775  Sedum spathulifolium J. P. Tracy 1950-1 18715 Humboldt Wildcat Road, 2 mi S of Ferndale 305 Comment
  UC1198830  Sedum spathulifolium Joseph P. Tracy 1926-7-25 7747 Humboldt on rocks at point called Devil's Canyon Northern Coast Region, , Devil's Canyon (Big Lagoon) 152 Comment
  HSC63239  Sedum spathulifolium var. spathulifolium M. A. Baker 1979-6-7 801 Humboldt Hwy. 299, 3 km N of Berry Summit Comment
  SBBG19224  Selaginella oregana L. L. Kiefer 1963-8-6 769 Humboldt Patrick's Pt St Park, N side of Lookout Rock 45 Comment
  HSC95089  Senecio elegans Andrea Pickart 2002-6-4 116 Humboldt N of 'Power pole' site Comment
  JEPS37086  Senecio glomeratus Lincoln Constance 1934-6-25 926 Humboldt 4 mi n Dyerville (and <4 mi n?> of n boundary of Humboldt Redwood Park, on Redwood Highway); South Fork Eel River, Bull Creek Region, Englewood Comment
  UC1118079  Senecio glomeratus H. S. Yates 1936-6-18 5735 Humboldt 2 mi n Big Lagoon; Rocky Pt Quad. 30 Comment
  HSC48867  Senecio integerrimus Brad Klipfel 1973-6-10 62 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  CAS-BOT-BC364020  Senecio integerrimus var. major Doris K. Kildale 1928-5-27 5957 Humboldt Kneeland Prairie 853 Comment
  HSC82545  Senecio integerrimus var. major Thomas W. Nelson 1979-7-11 5003 Humboldt N Trinity Mtn. and ridge to E. 1829 Comment
  UC581706  Senecio integerrimus var. major Joseph P. Tracy 1933-7-11 12703 Humboldt Grouse Mountain North Coast Ranges 1524 Comment
  CAS-BOT-BC364016  Senecio integerrimus var. major Joseph P. Tracy 1928-5-6 8429 Humboldt Trinity River Valley, at Willow Creek 152 Comment
  SEINET11803188  Senecio integerrimus var. major J. P. Tracy 1946-1 17537 Humboldt Kneeland Prairie 762 Comment
  UC1223155  Senecio integerrimus var. major Joseph P. Tracy 1950-5-6 18638 Humboldt Willow Creek Trinity River Valley 152 Comment
  UC581705  Senecio integerrimus var. major Joseph P. Tracy 1930-7-18 9064 Humboldt near McKay Camp; South Fork Mountain 1676 Comment
  UC581749  Senecio triangularis Joseph P. Tracy 1933-7-25 12851 Humboldt Grouse Mountain , Grouse Mountain (North Coast Ranges) 1524 Comment
  HSC67442  Senecio vulgaris J. P. Smith 1971-10-6 4945 Humboldt End of Murray Rd. in McKinleyville. Comment
  UC1196921  Sequoia sempervirens J. P. Tracy 1897-2-22 153 Humboldt immediate vicinity Eureka 0 Comment
  NY64455  Sequoia sempervirens H. H. Smith 1911-6-16 3824 Humboldt Vanceslan No. 20 Comment
  NY64474  Sequoia sempervirens P. Nuns 12 1967 s.n. Humboldt Our Lady of Redwoods Monastery, Whitehorn Comment
  SEINET5716898 Image available Sequoia sempervirens Ronald J. Mastrogiuseppe 1966-1 s.n. Humboldt Along State Route 299 from Arcata to Redding; Demonstration Forest, Simpson Timber Company.; Arcata Comment
  SEINET5716899 Image available Sequoia sempervirens Ronald J. Mastrogiuseppe 1965-1 s.n. Humboldt Humboldt Redwoods State Park; near the Founders Tree.; Humboldt Redwoods State Park Comment
  CAS-BOT-BC205568  Sidalcea malachroides Doris K. Kildale 1927-7-2 3628 Humboldt Lord-Ellis road Comment
  CHSC96447  Sidalcea malachroides Gordon Leppig; Todd Treadwell 2005-6-8 2248 Humboldt Pacific Lumber Company land. Blue Slide Creek watershed. UTM Zone 10 NAD 1927, 419949E, 4482795N. 245 Comment
  UC1197966  Sidalcea malachroides Joseph P. Tracy 1906-6-10 2472 Humboldt Kneeland Prairie Northern Coast Ranges, Kneeland Prairie 762 Comment
  UC1222506  Sidalcea malachroides Joseph P. Tracy 1950-6-8 18743 Humboldt one mi e Cape Mendocino (near top of Cape Ridge); e of Cape Mendocino, Cape Ridge 152 Comment
  UC175692  Sidalcea malachroides Joseph P. Tracy 1912-6-30 3716 Humboldt at Eureka Northern Coast Region, at Eureka 0 Comment
  UC668135  Sidalcea malachroides Joseph P. Tracy 1938-6-7 15860 Humboldt 5 mi se Korbel; Canyon Creek 152 Comment
  UC668136  Sidalcea malachroides Joseph P. Tracy 1938-6-15 15938 Humboldt vicinity Carlotta; vicinity of Carlotta 30 Comment
  HSC73172  Sidalcea malviflora M. A. Baker 1980-5-18 1350 Humboldt Near Black Mtn. 792 Comment
  UC146164  Sidalcea malviflora subsp. asprella Joseph P. Tracy 1908-6 2813 Humboldt opposite Buck Mountain (Valley of Van Duzen River); Northern Coast Ranges, Valley of Van Duzen River 457 Comment
  BLMAR280  Sidalcea malviflora subsp. patula Jennifer Anthony-Wheeler 1999-5-28 280 Humboldt King range, growing along windy pt rd about 1/2 way to the spring exclosure 140 Comment
  UC146187  Sidalcea malviflora subsp. patula J. P. Tracy 1905-6-11 2193 Humboldt immediate vicinity Eureka (at Buckport); immediate vicinity of Eureka, at Buckport 0 Comment
  UC902192  Sidalcea malviflora subsp. patula Joseph P. Tracy 1949-7-7 18331 Humboldt Table Bluff ridge 91 Comment
  JEPS67278  Sidalcea oregana subsp. eximia Joseph P. Tracy 1937-8-22 15671 Humboldt 2 mi s Field's Landing (at Still Ranch); s of Field's Landing, Still Ranch 6 Comment
  HSC104342  Sidalcea oregana subsp. eximia James Regan, Humboldt Redwood Co., LLC 2 Humboldt Table Bluff 46 Comment
  CAS-BOT-BC384547  Silene bridgesii Henry M. Pollard 1948-7-17 s.n. Humboldt Woods near Orleans Comment
  RSA46875  Silene californica Doris K. Kildale 1927-7-22 3816 Humboldt Lasseck s Peaks Comment
  UC1541416  Silene californica H. E. Parks May 1930 Humboldt near Carlotta; near Carlotta Comment
  POM257443  Silene gallica H. E. Parks, S. T. Parks 1936-06 5634 Humboldt Spruce Cove, Trinidad. Comment
  CAS-BOT-BC387076  Silene gallica Doris K. Kildale; L. B. Kildale 1930-5-27 9527 Humboldt Gunther's Island in Humboldt Bay Comment
  UC14434  Silene hookeri Chesnut and Drew 1888-7-19 Humboldt Pilot Ridge Comment
  CAS-BOT-BC389054  Silene laciniata subsp. californica Doris K. Kildale 1928-6-24 7060 Humboldt Redwood Creek at Berry's 289 Comment
  UC552236  Sisymbrium officinale Joseph P. Tracy 1933-8-22 12976 Humboldt Eureka; Northern Coast Ranges, Eureka 0 Comment
  HSC45084  Sisymbrium officinale R. Sutherland 1978-4-25 1 .25478 Humboldt Mouth of Buck Creek 21 Comment
  HSC13913  Sisyrinchium bellum Jack Rockwell 1962-5-4 52 Humboldt Lone Star Junction 549 Comment
  HSC44756  Sisyrinchium bellum Maralyn O'Meara 1972-6-8 83 Humboldt Along Bald Hills Rd. 16.4 mi. E of junction with Hwy. 101 Comment
  UC275554  Smilacina stellata Joseph P. Tracy 1924-9-7 Humboldt Table Bluff Northern Coast Ranges 182 Comment
  UC666970  Smilacina stellata Joseph P. Tracy 1939-4-25 16222 Humboldt Bull Creek; mouth 60 Comment
  HSC89504  Solanum furcatum M. Roantree 1985-5-30 72 Humboldt E side of Trinidad Head along dirt road Comment
  RSA246652  Solanum laciniatum Robert F. Thorne, Percy C. Everett 1965-8-5 35160 Humboldt Samoa Dunes. Edge of Humboldt Bay. 3 Comment
  HSC21319  Solanum parishii Francis Winter 1960-5-7 Humboldt 1 mi. S of Tish Tang Boys Camp 305 Comment
  RSA183613  Solanum umbelliferum D. E. Anderson 1965-6-1 3778 Humboldt Along Friday Ridge Road, about 3 miles north-east of its Jct. with Titlow Hill Road. 1067 Comment
  RSA47108  Solanum umbelliferum Doris K. Kildale 1925-5-10 625 Humboldt Strongs Station Comment
  POM210211  Solidago canadensis subsp. elongata H. E. Parks 1931-07 1056 Humboldt Trinidad. 76 Comment
  CAS-BOT-BC365437  Solidago elongata H. E. Parks 1931-7-1 01056 Humboldt Trinidad 76 Comment
  UC1223177  Solidago elongata Joseph P. Tracy 1949-8-11 18458 Humboldt Snow Camp 1402 Comment
  CAS-BOT-BC365668  Solidago spathulata W. R. Dudley 1899-6-1 s.n. Humboldt Eureka Peninsula Comment
  HSC25959  Solidago spathulata Thomas W. Nelson 1970-11-7 288 Humboldt At the foot of Murray Rd. at McKinleyville Comment
  UC1541619  Solidago velutina subsp. californica H. E. and S. T. Parks 1937-9-1 24081 Humboldt Trinidad , Trinidad (Spruce Cove) 64 Comment
  UC166083  Soliva sessilis J. P. Tracy 1901-5-5 1069 Humboldt immediate vicinity Eureka 0 Comment
  HSC6218  Sonchus asper S. R. Johnson 1965-3-15 11 Humboldt 1 mi. N of Luffenholtz Beach Comment
  HSC89522  Sonchus asper M. Roantree 1985-6-10 79 Humboldt W side of Trinidad Head Comment
  HSC39802  Sonchus oleraceus Peter Sorensen 1976-6-11 Humboldt King Salmon Comment
  HSC40944  Sonchus oleraceus Linda M. Barker 1976-6-1 1546 Humboldt Lanphere-Christensen Dunes, 3 mi. W of Arcata. Comment
  HSC36097  Sparganium angustifolium Ken Harrington 1973-10-7 Humboldt Log pond in Arcata Comment
  JEPS397  Sparganium emersum var. emersum Joseph P. Tracy 1934-7-30 13507 Humboldt along coast in front of s end Stone Lagoon; Dry Lagoon 3 Comment
  UC14919  Sparganium erectum subsp. stoloniferum Hattie F. Tracy 1901-6-26 1216 Humboldt Loleta 15 Comment
  SBBG89225  Spartina foliosa A. Keedy 1988-9-18 8 Humboldt Jolly Giant Crk {near mouth}; Arcata Salt Marsh Comment
  CHSC33022  Spergula arvensis subsp. arvensis James Payne Smith Jr. 1970-6-7 3805 Humboldt 0.6 miles north of Luffenholtz Beach along Calif. 1 near Trinidad. Comment
  HSC26364  Spergularia macrotheca T. O. Osborne 1970-4-5 85 Humboldt Flat-iron rock, 3/4 mi. NW of Trinidad Lighthouse. Comment
  HSC26360  Spergularia macrotheca T. O. Osborne 1970-6-18 46 Humboldt Green Rock, 1-5/8 mi. N, 3/4 mi. W of Trinidad Lighthouse. Comment
  RSA246888  Spergularia macrotheca R. F. Thorne, Percy C. Everett 1965-8-8 35277 Humboldt N edge of Eureka, E of Hwy 101. 3 Comment
  HSC56168  Spergularia rubra G. L. Clifton, Griswold 1979-8-1 12059 Humboldt Near N Trinity Mtn., close to the town of Hoopa. 1798 Comment
  RSA472779  Spiraea douglasii Charlotte M. Hoak 1931-7-14 s.n. Humboldt Alton. Comment
  UC492192  Spiraea douglasii Joseph P. Tracy 1932-8-28 10760 Humboldt Bald Mountain Northern Coast Ranges (at Lake Prairie) 1066 Comment
  HSC40375  Spiranthes romanzoffiana Linda M. Barker 1976-9-3 1695 Humboldt Lanphere-Christensen Dunes, 3 mi. W of Arcata. Comment
  RSA249514  Spiranthes romanzoffiana Robert F. Thorne, Percy C. Everett 1965-8-5 35154 Humboldt Samoa Dunes. 3 Comment
  UC1196399  Spiranthes romanzoffiana Joseph P. Tracy 1949-8-11 18463 Humboldt Snow Camp 1402 Comment
  RSA382191  Spiranthes romanzoffiana George Henry Grinnell 1926-7-22 s.n. Humboldt Near Eureka. Comment
  HSC100154  Spirodela polyrhiza J. M. DiTomaso 1979-4-21 893 Humboldt Next to Hwy. 101 at Crannell Rd. exit between Westhaven and Mckinleyville Comment
  HSC100152  Spirodela punctata M. A. Ericksen 1979-5-29 308 Humboldt Northern-most of Clam Beach ponds Comment
  HSC99127  Stachys ajugoides Cara Witte 2008-7-10 863 Humboldt Forest Service Road 4N06. 2 miles west of National Forest 1. 1195 Comment
  UCLA71584  Stachys ajugoides var. ajugoides Joseph P. Tracy 1939-6-23 16312 Humboldt Park's garden Trinidad 3 Comment
  CHSC803  Stachys ajugoides var. rigida 1941-5-30 Humboldt Comment
  UC630494  Stachys ajugoides var. rigida H. E. and S. T. Parks 1937-7 24025 Humboldt Spruce Cove Trinidad 60 Comment
  UC162688  Stachys ajugoides var. rigida Joseph P. Tracy 1911-7-11 3515 Humboldt hills along Supply Creek Northern Coast Ranges, Hoopa Valley 182 Comment
  UC604661  Stachys chamissonis Joseph P. Tracy 1938-8-20 16124 Humboldt Alton 18 Comment
  HSC49394  Stachys rigida R. York 1979-5-15 288 Humboldt Trail leading to College Cove 1 mi. N of Trinidad Comment
  SEINET4110862  Stellaria borealis var. sitchana D. W. Taylor 2004-1 19125 Humboldt Pond in the divide between Frost Creek and Martin Creek, about 1 air mile east of the Alderpoint Road. 518 Comment
  HSC4283  Stellaria crispa D. E. Anderson 1962-3-31 1963 Humboldt Along new Hwy. 101, W side of Freshwater Lagoon Comment
  HSC100419  Stellaria longipes Carl C. Marshall May 1886 227 Humboldt Near H. and S to mill E of Arcata. Comment
  HSC75438  Stellaria media J. O. Sawyer 1980-7-18 3580 Humboldt North Trinity Mountain Research Natural Area, north of Mill Creek Lake to Red Cap Hole. Comment
  UC1103550  Stellaria nitens Joseph P. Tracy 1927-6-12 8147 Humboldt Horse Mountain 1432 Comment
  OBI22262  Stipa lemmonii Joseph P. Tracy 1938-6-17 15968 Humboldt Panther garp, on the road from Bull Crk to Upper Mattole 823 Comment
  BLMAR677  Stipa lemmonii var. lemmonii Jennifer Wheeler 2013-7-10 677 Humboldt King range, HJ Ridge 609 Comment
  SEINET5585763  Stipa occidentalis Percy Train 1937-1 515 Humboldt Canyon Creek summit, east slope Santa Rosa Range 2195 Comment
  HSC44061  Streptanthus breweri Thomas W. Nelson 1977-7-4 3587 Humboldt W side of road N of Alder Springs, head of N Fork of Conley Creek 1494 Comment
  POM172671  Streptanthus tortuosus Joseph P. Tracy 1912-7-26 3843 Humboldt Kneeland Prairie 762 Comment
  CHSC97958  Streptanthus tortuosus var. tortuosus Laurel Goldsmith; Wanda Naylor 2005-6-8 5 Humboldt 1.7 miles south of Hwy 299 on Titlow Hill Rd. UTM 0436141, 4525408. 980 Comment
  HSC57137  Streptanthus tortuosus var. tortuosus Walter Overton, Marvin Butler 1979-7-25 9914 Humboldt Near Grouse Mtn., close to the town of Willow Creek 1646 Comment
  HSC57457  Streptanthus tortuosus var. tortuosus G. L. Clifton, Terry Griswold 1979-7-26 10288 Humboldt Near Salmon Mtn., close to the town of Forks of Salmon 1935 Comment
  HSC58025  Streptopus amplexifolius G. L. Clifton 1979-7-31 11833 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  CAS-BOT-BC269576  Symphoricarpos albus var. laevigatus Elizabeth Parsons Hawver 1915-6-1 s.n. Humboldt Carlotta Comment
  HSC39184  Symphoricarpos albus var. laevigatus D. E. Anderson, J. P. Smith 1971-6-28 - 1216 Humboldt Along Mad River, 2 mi. S of Blue Lake. Comment
  HSC99468  Symphoricarpos mollis K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-14 122 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  UC774604  Symphyotrichum subspicatum Carl B. Wolf 1937-9-14 9355 Humboldt 4 mi n, Redwood Highway Loleta 7 Comment
  UC1198057  Synthyris reniformis Joseph P. Tracy 1930-6-15 Humboldt Larrabee Creek near Bosworth's; Northern Coast Ranges 457 Comment
  JEPS9922  Synthyris reniformis Charlotte Wilder 1922-3-2 Humboldt roadbanks near Beckwith's Mill; North Coast, Carlotta Comment
  HSC101558  Tanacetum bipinnatum J. P. Smith, J. O. Sawyer 2009-10-4 12686 Humboldt Along New Navy Base Road near Samoa Boat Ramp 2 Comment
  UC1223070  Tanacetum parthenium Joseph P. Tracy 1946-7-28 17624 Humboldt Head of Willow Creek Comment
  HSC21572  Tauschia kelloggii Francis Winter 1960-4-24 Humboldt Hog Ranch Ridge, 8 mi. NW of Hoopa Indian Reservation 610 Comment
  HSC1595  Taxus brevifolia F. Morrell 1949-5-22 33 Humboldt E of Berry Summit , Hwy. 299 Comment
  SBBG56445  Taxus brevifolia L. Rowntree 1931-7-26 Humboldt Carlotta Comment
  BLMAR80  Tellima grandiflora Jennifer Anthony-Wheeler 1994-6-2 80 Humboldt IAQUA, growing on moist cut bank along lgging rd 853 Comment
  HSC20430  Tellima grandiflora D. E. Anderson 1962-3-31 1964 Humboldt Along new Hwy. 101, W side of Freshwater Lagoon Comment
  JEPS43496  Tellima grandiflora Lincoln Constance 1934-5-26 686 Humboldt North Dyerville Flat South Fork Eel River, Bull Creek Region (near Founders' Tree) 48 Comment
  CAS-BOT-BC392287  Thalictrum fendleri Doris K. Kildale 1926-4-4 1749 Humboldt Trinidad Comment
  HSC12833  Thuja plicata Thomas W. Nelson, Wilbur Peterson 1970-12-2 301 Humboldt HSC Campus SE side of field house Comment
  SDSU1860  Thuja plicata D. F. Howe 1963-8-7 3705 Humboldt 30 miles west of west entrance to Six Rivers National Forest on #299. 183 Comment
  UCR32079  Thuja plicata David J. Keil 1983-7-2 17308 Humboldt North Coast Range, c. 10.5 mi east of the junction with US Hwy 101 along SR 299 [2-3 mi. east of Blue Lake] 183 Comment
  HSC6995  Thysanocarpus curvipes E. C. Murczek 1964-4-4 27 Humboldt 8 mi. N of Hoopa Comment
  SBBG2855  Tiarella trifoliata var. unifoliata H. and M. Dearing 1939-5-15 3703 Humboldt E fork of Willow Crk 762 Comment
  UC1409074  Tiarella trifoliata var. unifoliata Robert F. Thorne and P. Everett 1965-8-5 35140 Humboldt below summit Mt. Chamisal Mt. Chamisal; , below summit 533 Comment
  UC154081  Tiarella trifoliata var. unifoliata J. P. Tracy 1907-6-20 2567 Humboldt immediate vicinity Eureka; immediate vicinity of Eureka 0 Comment
  CAS-BOT-BC436914  Tiarella trifoliata var. unifoliata C. C. Harris; S. K. Harris 1936-6-16 660 Humboldt Yager Road from Carlotta 152 Comment
  UC1211979  Tiarella trifoliata var. unifoliata H. W. Grinnell 1932-7-23 49 Humboldt South Fork Mountain; below McKay Camp 1524 Comment
  UC154147  Tiarella trifoliata var. unifoliata Mrs. M. H. Manning 1901-7-31 322 Humboldt near Hupa (Eureka Trail); near Hupa, Eureka Trail Comment
  HSC38208  Tolmiea diplomenziesii Thomas W. Nelson, J. P. Smith 1976-4-25 2382 Humboldt Brazil Ranch E of Hwy. 101 near College of the Redwoods Comment
  CAS-BOT-BC447611  Tolmiea menziesii J. P. Tracy 1900-5-30 832 Humboldt Immediate vicinity of Eureka 152 Comment
  HSC74665  Tonella tenella Gail Newton 1981-6-6 2189 Humboldt Near Pilot Ridge Trail 1314 Comment
  UC27661  Tonella tenella Mrs. M. H. Manning Apr 1899 Humboldt Hoopa Valley Comment
  HSC75412  Torilis arvensis J. O. Sawyer, M. A. Ericksen 1980-7-7 3574 Humboldt Slopes along Aikens Creek, Adroni Research Area 457 Comment
  SACT002419  Torresia macrophylla V. Barnes 1959-1 Humboldt Comment
  HSC93749  Torreyochloa pallida var. pauciflora Gordon Leppig, Sylvia Leppig, Kai Neander 1998-5-25 792 Humboldt Arcata, Alder Grove Pond 18 Comment
  CAS-BOT-BC169176  Toxicodendron diversilobum Joseph P. Tracy 1937-5-30 15301 Humboldt Larrabee Creek, 5 miles N. of Blocksburg 365 Comment
  UC1199329  Tracyina rostrata Joseph P. Tracy 1916-6-20 4736 Humboldt Parry's Ranch Northern Coast Ranges, Dobbyn Creek 182 Comment
  UC1222896  Tracyina rostrata Joseph P. Tracy 1950-6-23 18859 Humboldt 3 mi ne Alderpoint; Dobbyn Creek 213 Comment
  UC582683  Tracyina rostrata Joseph P. Tracy 1930-6-15 8762 Humboldt Dobbyn Creek 152 Comment
  CAS-BOT-BC517421  Triantha occidentalis subsp. occidentalis Joseph P. Tracy 1914-9-6 4606 Humboldt Northern Coast Ranges, Bald Mountain between High Prairie and Snow Camp, near Seidell Ranch 1219 Comment
  HSC68322  Trientalis latifolia J. P. Smith 1973-5-26 6857 Humboldt Scotia Bluffs along the Eel River near Rio Dell Comment
  HSC70386  Trientalis latifolia M. A. Baker 1980-6-7 1859 Humboldt Near Ammon Creek 732 Comment
  HSC48609  Trientalis latifolia Mark Flippo 1978-4-8 3 Humboldt McKinleyville; Bella Vista Hill Comment
  UC495672  Trifolium albopurpureum var. dichotomum Joseph P. Tracy 1929-5-5 8566 Humboldt along South Fork Eel River (Miranda); Northern Coast Ranges 121 Comment
  UC1197496  Trifolium barbigerum J. P. Tracy 1901-5-16 1092 Humboldt immediate vicinity Eureka 0 Comment
  UC1223509  Trifolium barbigerum Joseph P. Tracy 1936-6-9 14883 Humboldt Bear River Ridge 609 Comment
  UC1223514  Trifolium barbigerum Joseph P. Tracy 1942-6-15 17120 Humboldt Englewood Prairie Comment
  HSC34958  Trifolium bifidum Thomas W. Nelson 1975-5-24 1872 Humboldt McKeown Ranch, N of Dinsmore. Comment
  UC1223327  Trifolium campestre Joseph P. Tracy 1936-8-1 15060 Humboldt 6 mi se Blue Lake (near Bear Canyon Creek, in logged-off country) 365 Comment
  HSC102625  Trifolium cyathiferum M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-29 1611 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1579 Comment
  UC162801  Trifolium cyathiferum Joseph P. Tracy 1903-5-23 1902 Humboldt along Eel River (Alder Point); Northern Coast Ranges 91 Comment
  HSC45171  Trifolium dichotomum R. Sutherland 1978-5-21 3 .21578 Humboldt 433 Comment
  HSC15115  Trifolium dubium Norman H. Moe 1962-5-19 Humboldt Lanphere's Place Comment
  HSC15116  Trifolium dubium Harvey Doerksen 1962-5-8 18 Humboldt 3 mi. W of Blue Lake, fork Mad River and Essex Creek Comment
  HSC14995  Trifolium dubium J. W. Johnson 1962-4-18 1246 Humboldt Arcata, Mad River County Park Comment
  HSC45105  Trifolium dubium R. Sutherland 1978-5-17 2 .17578 Humboldt 305 Comment
  HSC45106  Trifolium dubium R. Sutherland 1978-5-16 6 .16578 Humboldt 157 Comment
  HSC15124  Trifolium fucatum Francis Winter 1960-4-24 Humboldt Redwood Creek Ranch 381 Comment
  HSC15183  Trifolium gracilentum Norman H. Moe 1962-5-19 Humboldt Lanphere's Place Comment
  JEPS109912  Trifolium howellii Dean W. Taylor 2006-8-3 19574 Humboldt Snow Camp Lake; un-named first-order tributary to Redwood Creek not shown on USGS map 1 mile NE of the lake. Comment
  UCR95636  Trifolium hybridum R. F. Thorne, Percy C. Everett 1965-8-8 35268 Humboldt North Coast, N edge of Eureka, east of Hwy 101 5 Comment
  RSA168859  Trifolium hybridum Joseph P. Tracy 1938-6-15 15926 Humboldt Salmon Creek Flats, south end Humboldt Bay. Comment
  UC1541602  Trifolium longipes Harold E. Parks 1934-6-14 4784 Humboldt Horse Mtn 1432 Comment
  UCD111290  Trifolium longipes subsp. oreganum Tofsrud 1948-9-1 s.n. Humboldt Road junction near summit of Horse Mt. 1463 Comment
  UC1223331  Trifolium longipes var. oreganum Joseph P. Tracy 1933-7-11 12698 Humboldt between Horse Mt. and Grouse Mt. (near Clear Lake) Comment
  UC1197232  Trifolium macraei Joseph P. Tracy 1923-6-18 6281 Humboldt near Mazeppa Ranch (Bear River Ridge); Northern Coast Ranges 30 Comment
  HSC71451  Trifolium microcephalum J. P. Smith 1973-5-26 6870 Humboldt Scotia Bluffs along the Eel River near Rio Dell Comment
  HSC45137  Trifolium microcephalum R. Sutherland 1978-6-1 4 .1678 Humboldt 213 Comment
  HSC45138  Trifolium microcephalum R. Sutherland 1978-5-25 1 .25578 Humboldt Near the Mattole River 288 Comment
  HSC71464  Trifolium microcephalum J. P. Smith, J. O. Sawyer 1973-5-12 6671 Humboldt 2 mi. from Redwood Creek on Hoopa Rd. Comment
  UC1197541  Trifolium microdon J. P. Tracy 1910-5-22 3139 Humboldt Eureka vicinity 0 Comment
  CDA30206  Trifolium obtusiflorum M. K. Beyers, I. Shepardson 2009-9-13 245 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
  UC1197501  Trifolium obtusiflorum Joseph P. Tracy 1915-6-6 4648 Humboldt along rr track (Eureka); Northern Coast Region 0 Comment
  UC1103444  Trifolium oliganthum Joseph P. Tracy and Ernest B. Babcock 1912-5-11 3609 Humboldt near Hydesville; Northern Coast Region Comment
  UC1197043  Trifolium pratense Joseph P. Tracy 1911-6-25 3264 Humboldt Eureka Northern Coast Region 0 Comment
  RSA43865  Trifolium pratense H. M. Pollard 1947-8-9 s.n. Humboldt Roadside west of Orleans Comment
  UC162779  Trifolium repens J. P. Tracy 1903-8-9 1946 Humboldt immediate vicinity Eureka 0 Comment
  HSC45129  Trifolium variegatum R. Sutherland 1978-6-1 1 .1678 Humboldt 282 Comment
  HSC15177  Trifolium willdenovii D. E. Anderson 1965-5-8 3643 Humboldt About 2 mi. N of Willow Creek on the road running along E side of Trinity River Comment
  UC1223315  Trifolium willdenovii Joseph P. Tracy 1938-6-8 15866 Humboldt Samoa Sand Dunes Comment
  UC303199  Trifolium willdenovii Joseph P. Tracy 1925-5-17 6967 Humboldt near South Fork; Northern Coast Ranges, Trinity River Valley 182 Comment
  HSC104449  Trifolium wormskioldii Jeff Barrett, Keleigh Deitsch, Tessa Purdy 2014-4-13 2 Humboldt Samoa Peninsula, Fairhaven, along south side of Bay Street 5 Comment
  HSC33757  Trifolium wormskioldii Ron Ralston 1975-5-24 79 Humboldt Samoa Dunes off Samoa Blvd., across from boat landing Comment
  UC16825  Trifolium wormskioldii Joseph Burtt Davy and Walter C. Blasdale 1899-6-17 5600 Humboldt Arcata Comment
  UCD109909  Trifolium wormskioldii Linda M. Barker 1976-6-1 1547 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  RSA168905  Trifolium wormskioldii Joseph P. Tracy 1938-7-24 16087 Humboldt Corner of Pacific and A Streets. Eureka. Comment
  RSA46966  Trillium albidum E. N. Crosby 1935-3-10 66 Humboldt Blue Lake Comment
  CHSC24929  Trillium ovatum P. Goldman 1976-3-28 6 Humboldt Ca. 20 ft se of the road towards Fern Canyon State Park, ca. 4.7 mi from the end of road at Fern Canyon, ca. 100 mi s of Crescent City. 0 Comment
  HSC15699  Trillium ovatum D. E. Anderson 1962-2-23 1923 Humboldt Grove E of HSC campus Comment
  UCR13422  Trillium ovatum T. Wetherwax 1973-4-1 730104- 01 Humboldt c. 2 mi north of US Hwy 299 on Fieldbrook Road 61 Comment
  SEINET12051379  Trillium ovatum F. H. Utech, Sato, T.; Ohara, M. 1990-1 90 -289 Humboldt Humboldt Redwoods State Park, Jensen Grove 50 Comment
  SEINET12810619  Trillium ovatum John D. Freeman, Ruth R. Freeman 1967-1 Humboldt Comment
  CAS-BOT-BC521311  Trillium rivale Joseph P. Tracy 1949-6-25 18345 , 18425 Humboldt Trinity Summit; Mud Springs, in sperpentine area. 1341 Comment
  UC602558  Triodanis perfoliata Joseph P. Tracy 1932-6-14 10154 Humboldt Trinity River Valley at Willow Creek; Trinity River Valley, at Willow Creek 152 Comment
  HSC33758  Triphysaria eriantha subsp. eriantha A. Montalvo 1975-5-24 275 Humboldt Samoa Dunes off Samoa Blvd., across from the boat landing Comment
  UC1198034  Triphysaria eriantha subsp. eriantha Joseph P. Tracy 1921-4-24 5473 Humboldt facing South Fork of Eel River Phillipsville; Northern Coast Ranges, facing South Fork of Eel River 121 Comment
  HSC20849  Triphysaria eriantha subsp. eriantha B. Francis 1964-5-19 45 Humboldt 0.5 mi. S of Fairhaven 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
  CDA41899  Triphysaria pusilla E. C. Whitney 1966-4-25 s.n. Humboldt E. Baird property, Hydesville. 0 Comment
  UC1103148  Trisetum canescens Joseph P. Tracy 1917-5-30 4789 Humboldt Dows Prairie; Northern Coast Ranges 60 Comment
  UCD93635  Trisetum canescens R. Tofsrud 1947-7-1 199 Humboldt North of Harris. Comment
  HSC13417  Trisetum cernuum D. J. Wilder 1965-5-15 35 Humboldt 2 mi. E of Freshwater on Road to Kneeland Comment
  HSC13418  Trisetum cernuum T. L. Ackerman 1964-5-14 47 Humboldt Near E end of 17th St., Arcata. Comment
  LA10929  Trisetum cernuum Joseph P. Tracy; 1935-5-24 13814 Humboldt Eureka 0 Comment
  UC1103152  Trisetum cernuum Joseph P. Tracy 1935-5-24 13813 Humboldt Eureka; Northern Coast Ranges 0 Comment
  UC1225868  Triteleia hyacinthina Joseph P. Tracy 1942-6-15 17136 Humboldt near Redcrest resort (Englewood); Englewood 91 Comment
  UC1197716  Triteleia laxa Joseph P. Tracy 1942-6-15 17168 Humboldt 5 mi n Garberville 152 Comment
  CAS-BOT-BC85900  Tsuga heterophylla Doris K. Kildale 1926-3-25 1629 Humboldt Liscom Hill, Mad River near Essex 30 Comment
  NY64312  Tsuga heterophylla J. P. Tracy 1940-8-25 16704 Humboldt This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  UC1174867  Tsuga heterophylla P. C. Everett and E. K. Balls 1959-10-25 23963 Humboldt 22 mi w from Willow Creek (along U. S. Hwy. 299 to Arcata); U. S. Hwy. 299 579 Comment
  HSC62995  Umbellularia californica David Wheeler 1979-5-8 98 Humboldt 927 J St. Arcata Comment
  UC40104  Umbellularia californica W. L. Jepson 1936-8-7 17856 Humboldt upper Butte Creek, Bear Buttes Butte Creek; , Bear Buttes Comment
  HSC60134  Urtica dioica subsp. gracilis M. A. Baker 1977-5-1 277 Humboldt E of Humboldt State University. Comment
  SEINET202729  Urtica dioica subsp. holosericea Joseph P. Tracy 1950-9-22 19369 Humboldt Klamath River, near Slate Creek. 8 miles below Orleans. 122 Comment
  JEPS58733  Vaccinium cespitosum Harley P. Chandler May 1901 1181 Humboldt Humboldt Bay North Coast Ranges 30 Comment
  CAS-BOT-BC199315  Vaccinium ovatum A. A. Heller 1937-6-12 15917 Humboldt Bishop Pine Lodge, 3 miles north of Trinidad Comment
  CAS-BOT-BC199323  Vaccinium ovatum Carl B. Wolf 1930-10-24 1761 Humboldt Along the Klamath River 2 miles below mouth of Salmon River 152 Comment
  HSC90905  Vaccinium ovatum N. D. Dennis 1965-5-5 49 Humboldt 2 mi. N of Trinidad on Hwy. 101 Comment
  POM232033  Vaccinium ovatum I. L. Wiggins 1930-6-25 4613 Humboldt Sand dunes 2 miles north of Samoa. Comment
  UCD118079  Vaccinium ovatum Joseph M. DiTomaso 1976-3-28 349 Humboldt Arcata, beneath Redwood tree. Comment
  UCD166883  Vaccinium ovatum Colleen Rossier 2016-9-16 1 Humboldt In vicinity of Red Cap Road, upper side of road, plot Red Cap #1. 264 Comment
  UC416773  Valeriana sitchensis subsp. sitchensis Joseph Burtt Davy and Walter C. Blasdale Jun 21 1899-Jun 23 1899 5839 Humboldt Trinity Summit; North Coast Ranges Comment
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May 9 2008
  CAS-BOT-BC76038  Vancouveria hexandra C. Hart Merriam 1922-7-5 s.n. Humboldt Fortuna. Carson Woods. Comment
  HSC3377  Vancouveria hexandra E. W. Styskel 1963-5-16 23 Humboldt 3 mi. SE of Korbel, on Snow Camp Rd. 290 Comment
  HSC96678  Vancouveria hexandra Kristina Folland 2001-5-6 22 Humboldt Top of Fickle Hill Rd. Comment
  SJSU1032  Vancouveria hexandra A. C. Browne 1950-5-23 Humboldt Weott Comment
  CAS-BOT-BC76083  Vancouveria planipetala Doris K. Kildale 1926-5-2 1861 Humboldt Willow Creek Flat. 152 Comment
  HSC70385  Vancouveria planipetala M. A. Baker 1980-6-7 1860 Humboldt Near Ammon Creek. 732 Comment
  CAS-BOT-BC76092  Vancouveria planipetala J. H. Thomas 1949-6-13 921 Humboldt Between Le Perron Flat and Whitneys Peak, along trail. East of town of Orleans. 1066 Comment
  SEINET12093082  Vancouveria planipetala F. H. Utech 1986-1 86 -387 Humboldt ca 5 mi N on Kings Peak Rd, from junction with Shelter Cove Rd, near Tolkan Recreation Area 480 Comment
  HSC74416  Veratrum viride Gail Newton 1980-8-10 2037 Humboldt Near Blake Mtn. 1707 Comment
  UC1225858  Veratrum viride Joseph P. Tracy 1942-9-6 17312 Humboldt near McKay (South Fork Mountain); South Fork Mountain 1676 Comment
  HSC39719  Verbena lasiostachys D. E. Anderson, J. P. Smith 1971-6-28 - 1258 Humboldt 2.5 mi. S of Blue Lake along the Mad River Comment
  HSC28222  Veronica americana John R. Keith 1973-5-15 Humboldt Abandoned log pond about 200 yds. E of junction of Guintoli Ln. and West End Rd. Comment
  RSA245265  Veronica americana John R. Keith 1973-5-15 s.n. Humboldt Approximately 200 yards east of jct of Guintoli Ln. and West End Road. Comment
  UC1011936  Veronica americana F. W. Pennell and J. P. Tracy 1940-7-7 26088 Humboldt headwaters of Willow Creek, Route 299 Willow Creek 762 Comment
  UC1222772  Veronica americana Joseph P. Tracy 1950-6-8 18727 Humboldt 7 mi s of Ferndale (summit of Bear River Ridge, near Mount Glen Ranch); Bear River Ridge 609 Comment
  UC775054  Veronica scutellata Carl B. Wolf 1937-6-18 8895 Humboldt 1/2 mi s of Fortuna 15 Comment
  HSC99632  Veronica serpyllifolia subsp. humifusa G. L. Clifton, Terry Griswold 1979-7-25 10866 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1784 Comment
  RSA800193  Vicia Robert F. Thorne, Percy C. Everett 1965-8-8 35242 Humboldt N. edge of Eureka, E. of Hwy. 101 5 Comment
  HSC99443  Vicia americana subsp. americana K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-7 93 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  HSC73534  Vicia americana var. americana Gail Newton 1980-7-14 1496 Humboldt Near Last Chance Ridge. 1219 Comment
  UC1537113  Vicia americana var. americana Gordon H. True Jr. 1936-5-11 463 Humboldt 12 mi w Miranda (e slope of Elk Ridge); Elk Ridge 457 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
  UCR84713  Vicia benghalensis 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
  RSA20860  Vicia benghalensis Carl B. Wolf 1937-6-18 8899 Humboldt 1/2 miles E of Alton. 21 Comment
  JEPS66176  Vicia hassei Lincoln Constance 1934-6-6 826 Humboldt Dyerville to Horse Prairie (fire trail); South Fork Eel River, Bull Creek Region Comment
  HSC38207  Vicia hirsuta Thomas W. Nelson 1976-4-20 2381 Humboldt 12th and B St., Arcata Comment
  RSA755060  Vicia sativa subsp. nigra Robert F. Thorne, Percy C. Everett 1965-8-8 35241 Humboldt N edge of Eureka, E of Hwy. 101 5 Comment
  HSC69526  Vinca major R. Kalal 1980-6-1 3 Humboldt S side of Essex Pond 15 Comment
  UC1198443  Viola adunca Joseph P. Tracy 1927-4-24 7943 Humboldt Table Bluff; Northern Coast Ranges 91 Comment
  UC1761536  Viola adunca Mrs. Wilder 1926-4 5432 Humboldt Carlotta, Mrs. Wilder's yard Comment
  UC1198456  Viola glabella Joseph P. Tracy 1913-5-4 4055 Humboldt Kneeland Prairie; Northern Coast Ranges, Kneeland Prairie 762 Comment
  UC902116  Viola glabella Joseph P. Tracy 1942-6-23 17242 Humboldt near Box Camp; Trinity Summit 1524 Comment
  RSA218475  Viola glabella N. H. Russell 1960-6-9 60 -24 Humboldt Near Weott and Williams Grove, by Hwy 101. Comment
  UC1103563  Viola glabella Joseph P. Tracy 1940-8-25 16710 Humboldt near High Prairie; Bald Mountain 1036 Comment
  UC35267  Viola glabella W. C. Blasdale 1896-6-5 Humboldt Fitzgerald's Comment
  HSC70232  Viola hallii M. A. Baker 1980-6-8 1894 Humboldt Near Buck Flat. 1554 Comment
  HSC96267  Viola hallii Eric Schori, Kazuyuki Ishimaru 2005-6-10 9 Humboldt 7.4 mi. S of Rt. 299 on Titlow Hill Rd.; Coldspring Campground spur road 1370 Comment
  HSC101993  Viola macloskeyi M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-12 892 Humboldt Patterson Meadows 1555 Comment
  POM286593  Viola ocellata Lyman D. Benson 1928-7-11 403 Humboldt Weott Ranger Station, Mt. Range: Seaward N Coast; Drainage Area: S Fork Eel River. 61 Comment
  UC275333  Viola ocellata Joseph P. Tracy 1924-3-30 6629 Humboldt 3 mi w of Bridgeville (apparently its western limit, Van Duzen River (not in redwood belt)); Northern Coast Ranges, Van Duzen River 182 Comment
  HSC94129  Viola odorata Gordon Leppig, Sylvia Leppig 2000-12-23 1525 Humboldt SW corner of 10th and I St. 6 Comment
  UC183609  Viola praemorsa subsp. linguifolia Joseph P. Tracy 1913-6-17 4159 Humboldt Buck Mountain, near the summit Buck Mountain; Northern Coast Ranges, Buck Mountain 1524 Comment
  HSC21857  Viola sempervirens D. E. Anderson 1962-2-10 1915 Humboldt 1.0 mi. S of Big Lagoon school along abandoned stretch of Hwy. 101 Comment
  HSC44318  Viola sempervirens J. Walker 1977-4-23 11 Humboldt 2.5 mi. S of Shelter Cove Rd., S Fork of Bear Creek at Wailaki Campground 561 Comment
  SEINET200802  Viola sempervirens J. P. Tracy 1904-4-3 2006 Humboldt Eureka 0 Comment
  UC1103560  Viola sheltonii Joseph P. Tracy 1932-7-17 10678 Humboldt ridges e of Corral Prairie; Klamath Mountains 1828 Comment
  HSC86306  Viola sheltonii K. Berg, R. Bonning 1983-5-21 487 Humboldt 6.1 mi. from Berry Summit and Hwy. 299 1494 Comment
  HSC40867  Vulpia bromoides Linda M. Barker 1976-4-30 1398 Humboldt 3 mi. W of Arcata Comment
  UC1607841  Vulpia bromoides H. E. Parks May 1933 4306 Humboldt Trinidad district, Spruce Cove Comment
  UC187308  Vulpia microstachys var. microstachys Joseph P. Tracy 1902-6-3 1672 Humboldt near Fruitland Comment
  UCD94573  Vulpia microstachys var. pauciflora A. H. Murphy 1951-6-1 54 Humboldt South Fork Mtn. about 3 miles east of Low Gap. 822 Comment
  HSC37935  Vulpia myuros Peter Sorensen 1976-6-4 Humboldt N Spit 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
  UC525643  Vulpia octoflora var. hirtella Joseph P. Tracy 1929-7-4 8618 Humboldt French Camp Ridge; Northern Coast Ranges 1066 Comment
  CAS-BOT-BC128815  Whipplea modesta L. R. Abrams 1918-6-16 7145 Humboldt Lower arid Transition Zone, Willow Creek Comment
  HSC20441  Whipplea modesta D. E. Anderson 1962-5-1 2197 Humboldt 2 mi. W of Hoopa Comment
  POM281864B  Woodwardia fimbriata Lyman Benson 1928-7-9 396 Humboldt Weott Ranger Station. Seaward N Coast Range, S Fork Eel River watershed. 61 Comment
  HSC44509  Wyethia angustifolia Brad Klipfel 1973-7-1 118 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  UC582644  Wyethia angustifolia Joseph P. Tracy 1927-7-24 8295 Humboldt Upper Mattole Valley; Upper Mattole Valley 152 Comment
  UC582640  Wyethia longicaulis Joseph P. Tracy 1932-6-26 10253 Humboldt Valley of South Yager Creek 762 Comment
  CAS-BOT-BC527078  Xerophyllum tenax Volney Rattan 1903-1-1 s.n. Humboldt Near Mad River Bridge Comment
  HSC37997  Zeltnera muehlenbergii Peter Sorensen 1976-6-19 Humboldt Woodley Island Comment
  CAS-BOT-BC532735  Zigadenus micranthus Doris K. Kildale 1926-5-9 1984 Humboldt Kneeland Prairie 762 Comment
  HSC98861  Zigadenus micranthus Cara Witte 2007-5-29 128 Humboldt White Oak Opening. Along Kinsey Ridge. 1238 Comment
  CDA869  Zostera marina F. J. Shaughnessy 1999-6-14 s.n. Humboldt Humboldt Bay. Fields Landing 0.0-+1 . 0 Comment



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