Search Results — 2000 specimen records retrieved (1352 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/consortium/).
 Records are made available under the CCH Data Use Terms.

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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  HSC70566  Abies concolor M. A. Baker 1980-7-23 3190 Humboldt Near Orleans Mtn. 1859 Comment
  HSC99538  Abies concolor K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-8-10 203 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  CAS-BOT-BC78051  Abies grandis L. R. Abrams 1918-6-15 7100 Humboldt Brannan Mt. near Willow Creek 1371 Comment
  CAS-BOT-BC78058  Abies grandis Doris K. Kildale 1926-11-27 2841 Humboldt Alton Hill gulch between Alton + Rohnerville 152 Comment
  HSC31505  Abies grandis Steve Selva, Roger Jensen 1974-8-27 88 Humboldt Hwy 299 ca. 1.0 mi. E of Blue Lake Comment
  RSA0025092  Abronia latifolia Mildred E. Mathias 1929-8-4 769 Humboldt Along the coast near Eureka. Comment
  SEINET946033  Abronia latifolia Kai Neander, Gordon Leppig, Sylvia Leppig 1998-1 746 Humboldt Dry Lagoon State Park. Comment
  CDA40632  Acaena novae-zelandiae E. C. Whitney 1966-7-28 s.n. Humboldt Mather prop., Simpson Lumber Co., Fieldbrook. 0 Comment
  HSC100371  Acaena novae-zelandiae J. McRae 2010-6-18 Humboldt McKinleyville, USFS Humboldt Nursery. Comment
  HSC57158  Acer glabrum var. torreyi Overton, Butler 1979-7-26 9957 Humboldt Near Willow Creek, E Fork, close to the town of Willow Creek 1326 Comment
  RSA20961  Acer glabrum var. torreyi Carl B. Wolf 1937-9-13 9336 Humboldt North Coast Range, Clear Lake, between Grouse Mountain and Horse Mountain 1524 Comment
  HSC2814  Acer macrophyllum Elrid H. Spinas 1948-6-16 61 Humboldt Horse Mtn. Comment
  UC1115826  Acer macrophyllum Joseph P. Tracy 1939-10-15 16518 Humboldt Blue Slide on Van Duzen River 91 Comment
  HSC37924  Achillea millefolium Peter Sorensen 1976-6-4 Humboldt N Spit Comment
  HSC48766  Achillea millefolium Brad Klipfel 1973-6-10 102 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC58151  Achillea millefolium G. L. Clifton, Griswold 1979-8-2 12203 Humboldt Near Oregon Creek, close to the town of Hoopa 1663 Comment
  SD90228  Achillea millefolium Benjamin C. Stone 1952-6-25 140 Humboldt 15 miles south of Klamath on Hwy. 101. 14 Comment
  SEINET2145826  Achillea millefolium Joseph P. Tracy 1912-6-9 3661 Humboldt Alton 60 Comment
  HSC3330  Achlys triphylla Francis Winter 1960-4-23 Humboldt 1 mi. S of Simpson Creek, Korbel-Maple Creek Rd. 213 Comment
  HSC3336  Achlys triphylla William J. Ferlatte 1968-5-5 1125 Humboldt Hairpin turn on old Hwy. 299 305 Comment
  RSA12544  Achlys triphylla C. B. Wolf 1934-7-2 5894 Humboldt Snow Camp. (Mountains east of Korbel). 1372 Comment
  UC34152  Achnatherum lemmonii Joseph Burtt Davy 1899-6-8 5348 Humboldt Harris 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
  SEINET11682291  Achnatherum lemmonii J. P. Tracy 1951-1 19563 Humboldt halfway between Snow Camp & Twin Lakes (at Preston's old gate near road) Comment
  UC212861  Achnatherum occidentale subsp. californicum Joseph P. Tracy 1919-9-23 5285 Humboldt summit of ridge Northern Coast Ranges, Trinity Summit 1828 Comment
  HSC35817  Acmispon denticulatus Thomas W. Nelson, James Nelson, Jane P. Nelson 1975-6-20 1919 Humboldt Above Goat Rock, 2 mi. W of Bridgeville Comment
  HSC98303  Acmispon micranthus D. R. Junell 1965-5-2 41 Humboldt 1 mi. S of Fairhaven on Samoa Peninsula Comment
  HSC98304  Acmispon micranthus R. J. Vernimen 1963-4-27 37 Humboldt 0.5 mi. off Samoa Rd., behind the Georgia-Pacific dump, 7.5 mi. SW of Arcata. Comment
  HSC40403  Acmispon micranthus Linda M. Barker 1976-5-13 1493 Humboldt Lanphere-Christensen Dunes; 3 mi. W of Arcata Comment
  HSC40938  Acmispon micranthus Linda M. Barker 1976-6-1 1557 Humboldt Lanphere-Christensen Dunes, 3 mi. W of Arcata. Comment
  HSC64762  Acmispon micranthus Bruce Gordon 1979-6-18 140 Humboldt Redwood National Park, NNE of K & K Rd, about 2.5 mi. S of junction of K & K Rd. and Bald Hills Rd. 707 Comment
  HSC96283  Acmispon micranthus J. Breton, A. Livingston 2005-6-3 2 Humboldt 19.3 mi. S of Hwy. 299 on NF1 1240 Comment
  HSC71035  Acmispon wrangelianus Thomas W. Nelson 1977-4-20 3327 Humboldt Along FS Rd. 1N15 at bridge over Mad River 762 Comment
  HSC55327  Aconitum columbianum subsp. columbianum Griswold, Butler 1979-7-12 7159 Humboldt Near Groves Prairie, close to the town of Willow Creek. 1256 Comment
  HSC55637  Aconitum columbianum subsp. columbianum Overton, Butler 1979-7-24 9668 Humboldt Near Titlow Hill, close to the town of Willow Creek 1250 Comment
  HSC59943  Aconitum columbianum subsp. columbianum J. P. Smith, Steve Selva 1970-6-30 4112 Humboldt Comment
  HSC55866  Aconitum columbianum subsp. viviparum G. L. Clifton, Griswold 1979-7-25 10888 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1784 Comment
  HSC54752  Aconogonon davisiae G. L. Clifton, Griswold 1979-7-26 10270 Humboldt Near Salmon Mtn., close to the town of Forks of Salmon 1935 Comment
  HSC55084  Aconogonon davisiae G. L. Clifton, Griswold 1979-7-31 11748 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa. 1845 Comment
  CAS-BOT-BC412848  Aconogonon davisiae Thomas Nelson 1979-7-11 5022 Humboldt North Trinity Mountain and ridge to east. SE of Water Dog Lake 1828 Comment
  HSC101545  Actaea rubra J. P. Smith, J. O. Sawyer 2009-8-11 12653 Humboldt Green Diamond Resource land along State Route 299. 762 Comment
  HSC4593  Adenocaulon bicolor Lincoln Constance 1934-5-29 734 Humboldt Upper Look Prairie; South Fork Eel River 366 Comment
  HSC76344  Adenocaulon bicolor Teresa Prendusi 1981-7-24 487 Humboldt Near Whiteys Peak 1585 Comment
  SEINET181253  Adenocaulon bicolor Bassett Maguire, Ruth R. Maguire; C. B. Maguire 1934-6-8 15295 Humboldt Bolling Grove State Park Comment
  UC582523  Adenocaulon bicolor Joseph P. Tracy 1932-7-17 10650 Humboldt fir woods near Corral Prairie; Trinity Summit 1584 Comment
  UC76581  Adenocaulon bicolor Mrs. M. H. Manning 1901-1-1 Humboldt near Hupa Comment
  UC492186  Adenostoma fasciculatum W. L. Jepson and J. P. Tracy 1932-8-7 10337 Humboldt along rd. between Harris and Chamise Mt. (at point 3 mi. n. of s. boundary of Humboldt Co.); North Coast Ranges 762 Comment
Read comments
Oct 24 2018
  CAS-BOT-BC62289  Adiantum aleuticum T. G. W. 1924-7-1 s.n. Humboldt Arcata Comment
  RSA687745  Adiantum aleuticum Charlotte M. Hoak 1936-8-15 344 Humboldt Patricks Point Comment
  CAS-BOT-BC62292  Adiantum aleuticum L. B. Kildale 1930-6-1 9745 Humboldt Klamath River at Weitchpec Comment
  UC249662  Adiantum jordanii Joseph P. Tracy 1922-4-30 6025 Humboldt near Willow Creek Willow Creek; Northern Coast Ranges, Trinity River Valley 152 Comment
  CAS-BOT-BC65727  Adiantum pedatum Kenneth Clark 1980-6-14 691 Humboldt Point Delgada quad, north fork Dead Man's Gulch 83 Comment
  UC1199007  Aesculus californica Joseph P. Tracy 1914-6-14 4497 Humboldt near Hydesville; Northern Coast Region 60 Comment
  HSC58060  Ageratina occidentalis G. L. Clifton, Griswold 1979-8-1 11936 Humboldt Near Mill Creek Lakes, close to the town of Hoopa. 1692 Comment
  HSC57685  Agoseris aurantiaca G. L. Clifton, Griswold 1979-7-25 10901 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1784 Comment
  RSA167299  Agoseris grandiflora Joseph P. Tracy 1942-7-18 17276 Humboldt In fallow field at north end of town. Garberville. Comment
  OBI6922  Agoseris grandiflora var. leptophylla Joseph P. Tracy 1942-7-18 17276 Humboldt N end fo town. Garberville Comment
  UC1222933  Agoseris grandiflora var. leptophylla Joseph P. Tracy 1950-7-31 19224 Humboldt below Friday's Camp; Grouse Mountain 1524 Comment
  UC1222943  Agoseris grandiflora var. leptophylla Joseph P. Tracy 1948-8-15 18122 Humboldt 2 mi e, on ridge Grove's Prairie; Trinity Summit 1524 Comment
  UC275459  Agoseris heterophylla Joseph P. Tracy 1925-5-30 7021 A Humboldt on grassy slopes McClellan Mountain; Northern Coast Ranges 822 Comment
  UC1199482  Agoseris heterophylla var. heterophylla Joseph P. Tracy 1921-4-24 5464 Humboldt grassy slopes and open oak groves facing S Fk of Eel River Phillipsville; Northern Coast Ranges, South Fork of the Eel River 121 Comment
  HSC40016  Agoseris retrorsa Thomas W. Nelson, Jane P. Nelson 1976-7-1 2919 Humboldt Along N side of Mt. Lassic (Signal Peak) 1738 Comment
  UCD51860  Agrostis capillaris A. H. Murphy 1947-8-5 s.n. Humboldt McComb Ranch, Bald Hills, 7-8 miles SE of Orick. Comment
  HSC8788  Agrostis exarata D. E. Anderson 1963-10-6 2882 Humboldt Mad River bars, across from Essex Junction. Comment
  RSA152376  Agrostis exarata Joseph P. Tracy 1947-6-28 17749 Humboldt Larrabee Valley 732 Comment
  UC1103377  Agrostis exarata Joseph P. Tracy 1908-6 2803 Humboldt opposite Buck Mountain; Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  UC1103380  Agrostis exarata Joseph P. Tracy 1935-7-27 14282 Humboldt Corral Prairie Trinity Summit 1584 Comment
  UC204711  Agrostis exarata Joseph P. Tracy 1918-7-5 5016 Humboldt White Thorn Valley, in dried up ditch Northern Coast Ranges, White Thorn Valley 304 Comment
  UCD52429  Agrostis exarata P. B. Kennedy 1923-8-3 s.n. Humboldt south of Scotia by road off highway. Comment
  HSC35455  Agrostis microphylla J. D. Ackerman 1975-8-2 603 Humboldt Intersection of Indianola Cutoff and US Hwy 101. 3 Comment
  CAS-BOT-BC139129  Agrostis oregonensis Joseph P. Tracy 1930-7-16 8995 Humboldt Northern Coast Ranges. South Fork Mountain. At Mckay Camp. 1676 Comment
  UC1145063  Agrostis oregonensis Joseph P. Tracy 1941-8-24 17039 Humboldt near McKay Camp (in wet meadow); South Fork Mountain 1676 Comment
  HSC96541  Agrostis pallens Gordon Leppig 1997-8-3 645 Humboldt Big Lagoon County Park, Big Lagoon Bog 3 Comment
  BLMAR22  Agrostis stolonifera Brad Barr June, 1982 22 Humboldt King range, Spanish ridge Comment
  CAS-BOT-BC138630  Agrostis stolonifera David D. Keck 1938-8-5 4771 Humboldt Big Lagoon. Comment
  HSC37913  Agrostis stolonifera Peter Sorensen 1976-7-15 Humboldt Woodley Island Comment
  HSC99594  Agrostis stolonifera K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-8-10 262 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  UC1103371  Agrostis viridis Joseph P. Tracy 1911-7-9 3460 Humboldt wet places along Willow Creek (creek is tributary of Trinity River); Northern Coast Ranges 243 Comment
  HSC22532  Aira caryophyllea Dennis Anderson, J. P. Smith 1970-5-21 5085 Humboldt Scotia Bluffs, along N side of Eel River, in the vicinity of French Gulch Comment
  HSC8863  Aira caryophyllea Robert Wunner 1962-5-5 Humboldt Denny Forest Service campground Comment
  UC922024  Aira caryophyllea Joseph P. Tracy 1950-6-15 18814 Humboldt on Harris Rd. near Huestis Rock (6 mi se of Trinidad) 914 Comment
Read comments
Nov 27 2009
  CAS-BOT-BC138329  Aira caryophyllea var. caryophyllea Doris K. Kildale 1925-6-14 680 Humboldt Head of South Yager Creek. 914 Comment
  RSA286352  Aira praecox R. F. Thorne 1974-7-29 45069 Humboldt Samoa Dunes: between Humboldt Bay and Pacific Ocean. Comment
  RSA550893  Aira praecox R. F. Thorne 1965-8-9 35308 Humboldt Big Lagoon 3 Comment
  SEINET195362  Allium amplectens Unknown 1907-6-23 4832 Humboldt Near Yager. Comment
  JEPS15036  Allium bolanderi Harley P. Chandler June, 1901 1434 Humboldt Klamath River North Coast Ranges, Klamath River 243 Comment
  HSC58123  Allium campanulatum G. L. Clifton, Griswold 1979-8-1 12098 Humboldt Near N Trinity Mtn., close to the town of Hoopa 1799 Comment
  HSC81793  Allium falcifolium Thomas W. Nelson, James Nelson 1980-6-10 5400 Humboldt Along Swayback Ridge 4-wheel drive road, 1.25 mi. S of junction with Forest Service road. 1494 Comment
  RSA249434  Allium falcifolium D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5600 Humboldt Mt. Lassic and 2 smaller peaks to immediate E. 1768 Comment
  CDA18808  Allium triquetrum P. Haggard 2000-2-22 PDR 018177 Humboldt Glen St., Eureka. 0 Comment
  HSC2987  Allium unifolium J. F. Knezevich 1968-5-14 438 Humboldt 11 mi. S of Ferndale on rd. to Cape Mendocino 305 Comment
  RSA75603  Allium unifolium Albert M. Vollmer, L. Beane 1951-6-11 138 Humboldt Horse Mountain-Shelter Cove Road. Comment
  UC1197756  Allotropa virgata Arthur E. Connick 1926-5-1 Humboldt between Hoopa and Willow Creek (Northern Coast Ranges, Sugar Bowl Mountain); Northern Coast Ranges, Sugar Bowl Mountain 304 Comment
  HSC58170  Alnus incana subsp. tenuifolia G. L. Clifton, Griswold 1979-8-2 12243 Humboldt Near Oregon Creek, close to the town of Hoopa 1663 Comment
  RSA778733  Alnus rubra Lyman Benson 1929-7-19 1878 Humboldt Mouth of Matole [Mattole] River. Comment
  UCR3548  Alnus rubra David Whistler, H. M. Whistler 1964-7-31 640731- 10 Humboldt North Coast, 0.2 mi. south of Prairie Creek Redwoods State Park, along US Hwy 101, and Prairie Creek [Camp Rd.?] 10 Comment
  CAS-BOT-BC138014  Alopecurus geniculatus Richard Walter Pohl 1963-6-3 9449 Humboldt Korbel. Comment
  UCD55901  Alopecurus geniculatus Malcolm A. Nobs; S. Galen Smith 1949-8-3 1164 Humboldt 1 mile south of Fields Landing, Eel River Valley, Marsh Plant Survey of California. Comment
  HSC8900  Alopecurus pratensis L. M. Malloy 1965-3-27 2 Humboldt Arcata, 0.5 mi. W of Alliance Store along N side of Alliance Rd. Comment
  UCD55912  Alopecurus saccatus Joseph P. Tracy 1951-6-21 19525 Humboldt Hydesville, bed of former Goose Lake, back of Everett Beck house (formerly George Gray). Comment
  CAS-BOT-BC142882  Amelanchier alnifolia var. semiintegrifolia Doris K. Kildale 1926-6-27 2225 Humboldt Little Van Duzen River on Weaverville-Bridgeville Road 640 Comment
  CAS-BOT-BC142887  Amelanchier alnifolia var. semiintegrifolia Doris K. Kildale 1927-5-14 3192 Humboldt Big Lagoon Comment
  HSC41466  Amelanchier pallida J. P. Smith, J. O. Sawyer 1973-5-12 6690 Humboldt 6.1 mi. from Redwood Creek on Hoopa Rd. Comment
  CAS-BOT-BC143015  Amelanchier utahensis Joseph P. Tracy 1946-7-13 17618 Humboldt Carlotta, open flat by old Strong's District School House, 5 miles east of town. 60 Comment
  CAS-BOT-BC143016  Amelanchier utahensis Doris K. Kildale 1928-4-29 5959 Humboldt Redwood Creek at Berry's Comment
  UC1222322  Amelanchier utahensis Joseph P. Tracy 1951-5-6 19395 Humboldt 5 mi e Carlotta (open flat by old Strong's District School House) 60 Comment
  SEINET7296676 Image available Ammophila arenaria Richard W. Pohl 1987-1 15639 Humboldt Eureka; Beach and salt marsh 2 Comment
  HSC3518  Amsinckia intermedia Doris K. Kildale 1926-4-4 1727 Humboldt Above Big Lagoon Comment
  UC1239645  Amsinckia intermedia Joseph P. Tracy 1927-5-8 7990 Humboldt Garberville; Northern Coast Ranges 121 Comment
  HSC17832  Anagallis arvensis Allan R. Marshall 1962-5-5 4 Humboldt Along N Fork of Mad River at Camp Bauer 76 Comment
  HSC23719  Anagallis arvensis Tim Baroni 1971-7-5 104 Humboldt 8 mi. E of Petrolia Comment
  HSC49034  Anagallis arvensis Patricia Shesgreen 1978-5-5 67 Humboldt 17.4 mi. S of Ferndale on Mattole Rd. 91 Comment
  UC562471  Anagallis arvensis Joseph P. Tracy 1932-5-10 9936 Humboldt Bear R. Ridge Northern Coast Ranges, Bear R. Ridge 609 Comment
  POM318602  Anaphalis margaritacea Patricia Wilder 1968-8-21 4381 Humboldt Bog in Big Lagoon Park, just west of Hwy 101; Mt. Range: Coast range; Drainage Area: Big Lagoon to Pacific Ocean. 2 Comment
  HSC55682  Anemone deltoidea Overton, Butler 1979-7-26 9935 Humboldt Near Willow Creek, E Fork, close to the town of Willow Creek. 1326 Comment
  HSC74307  Anemone deltoidea M. A. Baker 1980-7-23 3171 Humboldt Near Orleans Mtn. 1859 Comment
  JEPS79808  Anemone deltoidea Joseph P. Tracy Jul 16 1930-Jul 19 1930 8964 Humboldt near McKay Camp; Northern Coast Ranges, South Fork Mountain 1676 Comment
  UC162853  Anemone deltoidea Joseph P. Tracy 1906-5-6 2444 Humboldt near Hydesville; North Coast Ranges 182 Comment
  CAS-BOT-BC391778  Anemone deltoidea Lillian Mott 1976-6-29 15 LM75 Humboldt Lady Bird Johnson Redwood Grove, Prairie Creek 60 Comment
  UCR39823  Anemone oregana Dave Bjornbak, M. Mayer, Steve Meredith 1985-5-10 33 Humboldt Horse Mtn. Rd., 8 mi. south of 299 1143 Comment
  UC503044  Anemone oregana Joseph P. Tracy 1927-6-12 8130 Humboldt Horse Mtn North Coast Ranges (in serpentine belt) 1524 Comment
  HSC41236  Anemone oregana var. oregana Brad Klipfel 1974-5-8 327 Humboldt Horse Mtn., to the NW below the towers Comment
  JEPS14236  Angelica genuflexa Joseph P. Tracy 1940-9-26 16725 Humboldt Near south city limits Eureka. 6 Comment
  UC582661  Angelica genuflexa Joseph P. Tracy 1937-9-30 15690 Humboldt Dow's Prairie 60 Comment
  UC1197377  Angelica hendersonii Joseph P. Tracy 1924-9-28 6909 Humboldt Northern Coast Ranges, Centerville Centerville; Northern Coast Ranges, Centerville 6 Comment
  UC1197380  Angelica hendersonii Joseph P. Tracy 1936-8-17 15156 Humboldt Table Bluff 91 Comment
  JEPS16069  Angelica hendersonii W. L. Jepson 1902-8-3 2133 Humboldt Loleta, Expedition from Ukiah to the Hupa Indian Reservation Loleta 60 Comment
  JEPS16070  Angelica hendersonii W. L. Jepson 1902-8-3 2133 Humboldt Loleta, Expedition from Ukiah to the Hupa Indian Reservation Loleta 60 Comment
  SD109161  Angelica lucida Joseph M. DiTomaso 1980-6-7 1572 Humboldt Elkshead, north of Trinidad. Comment
  UCD127119  Angelica lucida Joseph DiTomaso 1980-6-8 1575 Humboldt next to Hwy 101 between Arcata and Eureka. 1 mile south of Indianola Road. 1158 Comment
  HSC48315  Angelica tomentosa Brad Klipfel 1973-8-3 303 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  SD42569  Angelica tomentosa var. hendersonii Carl B. Wolf 1937-8-11 2910 Humboldt 1/2 mile east of Alton 17 Comment
  HSC45639  Anisocarpus madioides Diane L. Reed 1978-5-7 50 Humboldt Friday Ridge Road, near Hwy. 299 Comment
  HSC56962  Antennaria suffrutescens Overton, Butler 1979-7-23 9477 Humboldt Near Horse Mountain Creek, close to the town of Willow Creek 1317 Comment
  CAS-BOT-BC84720  Anthemis cotula Carl D. Duncan 1920-9-22 s.n. Humboldt Hoopa Valley Comment
  HSC103785  Anthemis cotula M. Mesler, K. A. Wayman 2015-8-4 1646 Humboldt Trail between Mill Creek Lakes trail head and Andy's Camp 1633 Comment
  UCD56135  Anthoxanthum aristatum W. R. Powell 1960-7-9 s.n. Humboldt 10 miles SE of Orick (direct line), Dolason Hill Prairie of the Bald Hills, along Orick-Weitchpec Road. 731 Comment
  HSC10102  Anthoxanthum occidentale E. W. Styskel 1963-4-20 19 Humboldt 3 mi SE of Korbel on Snow Camp Rd. 290 Comment
  HSC38077  Anthoxanthum occidentale Thomas Nelson, James Nelson 1976-5-30 2630 Humboldt McKeown Ranch, N of Dinsmore Comment
  HSC40404  Anthoxanthum occidentale Linda M. Barker 1976-4-13 1387 Humboldt 3 mi. W of Arcata Comment
  HSC8949  Anthoxanthum odoratum R. T. Forester 1963-4-30 52 Humboldt 0.25 mi. N of Fairhaven on Samoa Rd. Comment
  UC1152030  Anthoxanthum odoratum Joseph P. Tracy 1951-6-26 19548 Humboldt Snow Camp Meadow Comment
  UC187269  Anthoxanthum odoratum Joseph P. Tracy 1906-4-29 2424 Humboldt Northern Coast Region, at Eureka Eureka; Northern Coast Region, Eureka 0 Comment
  UCD56164  Anthoxanthum odoratum H. L. Person 1932-5-10 s.n. Humboldt Arcata. 45 Comment
  UCD56278  Anthoxanthum odoratum H. E. Parks; S. T. Parks 1952-4 24444 Humboldt Trinidad, Spruce Cove. 60 Comment
  HSC8941  Anthoxanthum odoratum Paul Shields 1955-6-10 Humboldt Arcata, Humboldt State University campus. Comment
  CDA41213  Antirrhinum vexillo-calyculatum subsp. breweri E. C. Whitney 1960-9-1 s.n. Humboldt State Highway 96 near Bluff Creek. 0 Comment
  HSC57887  Apocynum androsaemifolium Overton, Butler 1979-7-31 11438 Humboldt Near Water Dog Lakes, close to the town of Hoopa 1830 Comment
  HSC97622  Apocynum androsaemifolium Cara Witte 2007-6-19 301 Humboldt Cold Spring. 1/2 mile south of Titlow Hill. 1393 Comment
  UC153990  Apocynum androsaemifolium Joseph P. Tracy 1909-8-1 3063 Humboldt Kneeland Prairie Northern Coast Ranges, Kneeland Prairie 762 Comment
  HSC97916  Apocynum androsaemifolium Cara Witte 2007-6-14 289 Humboldt Along National Forest 1, on Kinsey Ridge, 2 mi. N of White Oak Opening 1243 Comment
  UC1196202  Aquilegia formosa Joseph P. Tracy 1926-5-9 7453 Humboldt Bridgeville Northern Coast Ranges 228 Comment
  HSC31632  Aquilegia formosa var. formosa Glenn McGourty 1974-4-27 18 Humboldt 1 mi. from Capetown Bridge Comment
Read comments
May 26 2016
  CAS-BOT-BC17260  Arabidopsis thaliana Joseph Prince Tracy 1932-5-17 10091 Humboldt Northern Coast Ranges. Trinity River Valley, at Willow Creek. 152 Comment
  HSC6527  Arabis glabra D. E. Anderson 1962-7-10 2245 Humboldt Luffenholtz Beach, about 2 mi. S of Trinidad along old Hwy. 101 Comment
  UC161543  Arabis glabra Joseph P. Tracy 1906-5-13 2456 Humboldt Ocean Beach Northern Coast Region, Humboldt Bay Comment
  HSC98619  Arabis glabra var. glabra Cara Witte 2007-5-31 154 Humboldt Along National Forest Rte. 1, near Kinsey Ridge, 1.5 miles north of intersection with 4N09 1299 Comment
  HSC57630  Arabis holboellii var. retrofracta G. L. Clifton, Terry Griswold 1979-7-25 10778 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1814 Comment
  HSC98725  Arabis subpinnatifida Cara Witte 2007-5-23 93 Humboldt Approximately 2 miles from intersection with 4N70 (Grouse Mountain Lookout Road) on 4N32. 1395 Comment
  HSC99596  Aralia californica Overton, Butler 1979-7-24 14090 Humboldt Near Titlow Hill, close to the town of Willow Creek. 1250 Comment
  JEPS40071  Aralia californica Lincoln Constance 1934-5-29 740 Humboldt n. bank Bull Creek opposite Squaw Creek; Bull Creek Region, W. Fork Eel R. Comment
  RSA175206  Arbutus menziesii R. F. Thorne 1957-9-2 19006 Humboldt Eel River. Burlington State Park, just S of Weott. Comment
  UC1222872  Arctium minus Joseph P. Tracy 1950-9-2 19351 Humboldt at, 3 mi s of Field's Landing Beatrice Comment
  UCD50535  Arctostaphylos canescens Joseph P. Tracy 1939-8-16 16406 Humboldt Horse Mountain; in open forest of Jeffrey Pine. 1432 Comment
  CAS-BOT-BC24092  Arctostaphylos canescens subsp. canescens L. R. Abrams 1918-6-15 7112 Humboldt Brannan Mt. near Willow Creek 1371 Comment
  CAS-BOT-BC23773  Arctostaphylos columbiana Joseph P. Tracy 1948-3-13 17955 Humboldt Table Bluff 91 Comment
  CAS-BOT-BC23777  Arctostaphylos columbiana J. P. Tracy 1909-3-7 2944 Humboldt Immediate vicinity of Eureka 152 Comment
  UC1198661  Arctostaphylos columbiana Joseph P. Tracy 1928-3-4 8403 Humboldt Miranda South Fork of Eel River 121 Comment
  UC397306  Arctostaphylos columbiana Joseph P. Tracy 1923-2-18 6141 Humboldt Big Lagoon Northern Coast Region; Big Lagoon, Humboldt Co. 6 Comment
  UC876392  Arctostaphylos columbiana J. E. Adams 1935-5-12 1047 Humboldt Patrick's Point Comment
  RSA252144  Arctostaphylos columbiana var. tracyi Gary D. Wallace 1974-12-22 1345 Humboldt Near coast N of Trinidad at the edge of the W part of Big Lagoon. 61 Comment
  UCSB11320  Arctostaphylos glandulosa Zinke, P. 1950-10-9 Humboldt King Peak 1280 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
  UC1222639  Arctostaphylos glandulosa subsp. glandulosa Joseph P. Tracy 1950-6-15 18795 Humboldt 7 mi n Harris; Mail Ridge Comment
  RSA632793  Arctostaphylos knightii Jon E. Keeley 1996-10-13 27796 Humboldt Bald Hills Road, eastern end of Redwood National Park, 20-23 km west of Highway 96, north of Eureka. 600 Comment
  HSC68217  Arctostaphylos manzanita J. P. Smith, J. O. Sawyer 1975-4-6 8051 Humboldt 3 mi. N of Whitehorn, across from the CA Dept. of Forestry Fire Station Comment
  HSC44397  Arctostaphylos nevadensis Brad Klipfel 1975-5-24 631 Humboldt Horse Mtn. Comment
  HSC7779  Arctostaphylos nevadensis D. E. Anderson 1965-6-1 3759 Humboldt Horse Mountain, S facing slope 1220 Comment
  JEPS38940  Arctostaphylos nevadensis Joseph P. Tracy 1932-7-18 10722 Humboldt head of Brett Hole Trinity Summit 1828 Comment
  UCD52857  Arctostaphylos nevadensis subsp. knightii Roman Gankin; W. R. Hildreth 1976-10-26 1177 Humboldt 21.4 miles east of U.S. 101 on Bald Hills Road from Orick; French Camp Ridge. Comment
  SEINET11988227  Arctostaphylos nevadensis subsp. knightii W. Knight, Knight, I. 1981-1 4326 Humboldt Regional Parks Botanic Garden, Berkeley, orig. from French Camp Comment
  CAS-BOT-BC46631  Arctostaphylos patula Joseph P. Tracy 1935-7-14 14063 Humboldt Horse Mountain. 1432 Comment
  UC1198667  Arctostaphylos patula Joseph P. Tracy 1942-9-6 17313 Humboldt along summit near Blake lookout; Northern Coast Ranges, South Fork Mountain 1706 Comment
  UC585959  Arctostaphylos patula Joseph P. Tracy 1935-7-14 14063 Humboldt Horse Mountain 1432 Comment
  UCD53433  Arctostaphylos patula A. E. Wieslander 1931-5-19 199 Humboldt Near Orleans. Comment
  CAS-BOT-BC46638  Arctostaphylos patula C. Hart Merriam 1919-8-10 s.n. Humboldt Wetchpek, Klamath Canyon. Comment
  CAS-BOT-BC46196  Arctostaphylos stanfordiana L. B. Kildale 1930-8-3 s.n. Humboldt Chaparral Mt. at Bug Creek. Comment
  CAS-BOT-BC27298  Arctostaphylos tracyi Joseph Prince Tracy 1923-2-18 6141 Humboldt Big Lagoon 6 Comment
  SEINET2028710 Image available Arctostaphylos tracyi H. E. Parks 1931-3-25 0917 Humboldt Near Patrick's Point Comment
  CAS-BOT-BC47213  Arctostaphylos uva-ursi Doris K Niles 1951-5-1 12 Humboldt Table Bluff Hill, Redwood Highway approximately 1 mi. n. of Loleta. Comment
  HSC7733  Arctostaphylos uva-ursi H. P. Chandler May 1901 1133 Humboldt Humboldt Bay 3 Comment
  UC1196868  Arctostaphylos uva-ursi Joseph P. Tracy 1923-3-31 6170 Humboldt Table Bluff Northern Coast Region, around Humboldt Bay 60 Comment
  UC1225935  Arctostaphylos uva-ursi Joseph P. Tracy 1945-3-30 17499 Humboldt Eureka 45 Comment
  UCD52028  Arctostaphylos uva-ursi Roman Gankin 1965-8-6 554 Humboldt Sand dunes west of road. 1.3 miles south of Samoa, Samoa Peninsula, Humboldt County, California. Comment
  RSA741641  Arctostaphylos uva-ursi var. coactilis Patricia Wilder 1968-8-21 4409 Humboldt Northern coastal arm of Humboldt Bay, ca. 1 mile SW of Samoa, in sand dunes. 15 Comment
  HSC8975  Aristida oligantha J. P. Tracy 1933-8-27 13000 Humboldt Vicinity of Garberville, Robertson's Range 122 Comment
  RSA152411  Aristida oligantha Joseph P. Tracy 1938-8-14 16110 Humboldt Trinity River Valley at Willow Creek 152 Comment
  UC1145043  Aristida oligantha Joseph P. Tracy 1938-8-14 16110 Humboldt Willow Creek Trinity River Valley 152 Comment
  RSA89768  Armeria maritima subsp. californica P. A. Munz 1954-7-25 19874 Humboldt On sand dunes at Humboldt Lighthouse south of Samoa. Comment
  HSC31214  Arnica cernua D. E. Anderson 1972-6-20 5739 Humboldt Along the Redwood Valley-Hoopa Rd., E of the summit. Comment
  HSC96075  Arnica cernua J. Breton, A. Livingston, J. Lumbert 2005-6-24 1 Humboldt Horse Mtn. radio tower, 1/2 mile from intersection of three F.S. roads, 4.5 miles from Hwy. 299 on Titlow Hill Rd. 1445 Comment
  SEINET6413745  Arnica cordifolia R. Spellenberg, S. Spellenberg 2014-5-24 14825 Humboldt USFS Road 1 S of CA Highway 299 at Berry Summit, 1.5 km N of junction with USFS Road 6N36 to translator towers. 1448 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
  HSC49998  Arnica discoidea M. A. Baker 1979-6-7 790 Humboldt W slope of Snow Mtn. 762 Comment
  UC129438  Arnica latifolia Joseph Burtt Davy and Walter C. Blasdale Jun 21 1899-Jun 23 1899 5754 Humboldt Trinity Summit Comment
  SEINET11837693  Arnica latifolia J. P. Tracy 1942-1 17236 Humboldt Trinity Summit, near Box Camp 1524 Comment
  HSC8988  Arrhenatherum elatius J. A. Waller 1965-5-2 29 Humboldt Along Hwy. 96 near Willow Creek Comment
  HSC8990  Arrhenatherum elatius J. P. Tracy 1927-9-25 8369 Humboldt Eureka, alongside railroad track 0 Comment
  HSC97439  Artemisia douglasiana Ivy Watson 2008-9-17 22 Humboldt Mad River Park on West End Rd. beside pumping station 12 Comment
  HSC99551  Artemisia douglasiana K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-8-10 216 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  HSC98817  Artemisia douglasiana Cara Witte 2007-9-3 642 Humboldt Forest Service Road 5N09. 1 mile east of intersection with National Forest 1. 1332 Comment
  SEINET11853294  Artemisia douglasiana J. P. Tracy 1947-1 17892 Humboldt Trinity Summit at Box camp 1463 Comment
  UC1222997  Artemisia douglasiana Joseph P. Tracy 1948-9-6 18158 Humboldt at Willow Creek (Tracy's place); Trinity River Valley 152 Comment
  CAS-BOT-BC90868  Artemisia pycnocephala H. E. Parks; S. T. Parks 1952-6-1 24495 Humboldt Samoa Comment
  CHSC266  Artemisia pycnocephala M. Anthony 1960-5-1 Humboldt Coastal. Comment
  HSC40298  Artemisia pycnocephala Linda M. Barker 1976-7-5 1633 Humboldt 3 mi. W of Arcata. Comment
  RSA24049  Artemisia pycnocephala C. B. Wolf 1940-11-10 9782 Humboldt Coast south of mendocino- 1.8 mi. N of where road turns inland to Petrolia. 8 Comment
  UC1199378  Artemisia suksdorfii Joseph P. Tracy 1939-5-28 16309 Humboldt coast bluffs s Centerville 60 Comment
  HSC102075  Aruncus dioicus var. acuminatus M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 977 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  RSA78412  Aruncus sylvester Philip A. Munz 1952-6-25 17840 Humboldt S of Grizzly Creek, N Fork of Trinity River, N of Helena. 1006 Comment
  SEINET3369095 Image available Asarum caudatum Richard R. Halse 2011-3-25 8163 Humboldt Along U.Sl. Hwy 101 ca 2.8 miles S of Stafford, near Exit 674. 74 Comment
  RSA261553  Asarum caudatum Suzanne May 1967-4-15 21 Humboldt On Kneeland Road, 5 miles east of Bridgeville 244 Comment
  SEINET8189642 Image available Asarum caudatum H. E. Parks 1931-3-24 0918 Humboldt Near Orick Comment
  UCR111208  Asarum hartwegii D. E. Anderson 1965-5-1 3566 Humboldt Along Hwy 96, 1.9 mi. north of Willow Creek. 162 Comment
  RSA46484  Asclepias cordifolia Doris K. Kildale 1925-7-2 963 Humboldt Bug creek 915 Comment
  RSA46483  Asclepias fascicularis Doris K. Kildale 1925-9-7 s.n. Humboldt Klamath at mouth of Dillon Cr. 762 Comment
  UC1222669  Asclepias speciosa Joseph P. Tracy 1950-7-6 19002 Humboldt 2 mi s Burr Valley (on the Albee Road) 1158 Comment
  UC440176  Aspidotis densa Joseph P. Tracy 1919-9-25 5301 Humboldt Trinity Summit; Northern Coast Ranges 182 Comment
  RSA43677  Aster radulinus H. M. Pollard 1947-8-9 s.n. Humboldt South River Road, south of Orleans Comment
  CAS-BOT-BC193132  Astragalus rattanii var. rattanii Volney Rattan 1884-1-1 s.n. Humboldt Headwaters Eel River Comment
  CAS-BOT-BC193137  Astragalus rattanii var. rattanii Joseph P. Tracy 1932-6-19 10245 Humboldt Buck Mountain, lower foothills of its northwest slope 762 Comment
  RSA138315  Astragalus rattanii var. rattanii Volney Rattan 1882-06 s.n. Humboldt Humboldt Comment
  UC162811  Astragalus rattanii var. rattanii Joseph P. Tracy 1903-5-23 1903 Humboldt along sand bars of Eel River at Alder Point; Northern Coast Ranges, Eel River at Alder Point 91 Comment
  SFV18601  Astragalus umbraticus T. W. Nelson, J. P. Nelson 1987-6-27 8620 Humboldt Along USFS road to Onion Lake, 8.2 miles from junction with State Route 96. 823 Comment
  UC1755322  Astragalus umbraticus Dean W. Taylor 2006-8-2 19569 Humboldt Showers Mountain; on north flank of the mountain, south rim of the Mad River canyon 1051 Comment
  UC180213  Astragalus umbraticus Joseph P. Tracy 1914-7-5 4575 Humboldt between High Prairie and Snow Camp (Bald Mountain); Northern Coast Ranges, Bald Mt., betw High Prairie-Snow Camp 1219 Comment
  SBBG69571  Asyneuma prenanthoides S. W. Hutchinson -Jun-1925 93 Humboldt Redwood Hwy 243 Comment
  JEPS70200  Athyrium filix-femina var. cyclosorum Robert J. Rodin 1969-8-18 8384 Humboldt along Redwood Creek near Orick Comment
  HSC10342  Athyrium filix-femina var. cyclosorum W. R. Supernaugh, Jr. 1964-12-12 8 Humboldt 1 mi. W of Freshwater Corners on Old Arcata Rd on S side of Hwy. Comment
  HSC35725  Athyrium filix-femina var. cyclosorum Thomas W. Nelson 1975-1-16 1748 Humboldt E of HSU campus Comment
  UC503067  Athyrium filix-femina var. cyclosorum H. E. Parks and Joseph P. Tracy 1930-9-13 9180 Humboldt Jacoby Creek; Northern Coast Ranges 121 Comment
  UC1198294  Athysanus pusillus Joseph P. Tracy 1908-6 2939 Humboldt nw slope of Buck Mountain Buck Mountain; Northern Coast Ranges, Buck Mountain 1219 Comment
  UCR139066  Atriplex patula subsp. obtusa Gordon Leppig 1999-10-25 1266 Humboldt Eureka, Palco Marsh 1 Comment
  HSC38380  Avena barbata Peter Sorensen 1976-5-29 Humboldt King Salmon Comment
  JEPS72923  Avena barbata Lincoln Constance 1934-6-18 901 Humboldt N. Dyerville Flat South Fork Eel River, Bull Creek Region (swamp border, near S. Fork R.R. sta. and P.O.) Comment
  SEINET200927  Avena fatua J. P. Tracy 1916-5-31 4703 Humboldt Stitz Creek. Along Eel River between SOuth Fork and Scotia 61 Comment
  CAS-BOT-BC99405  Baccharis pilularis Joseph P. Tracy 1923-10-6 6565 Humboldt Eureka, around Humboldt Bay 30 Comment
  HSC41913  Barbarea orthoceras M. A. Baker 1977-4-23 174 .5 Humboldt 2.5 mi. S of Shelter Cove Rd., S Fork of Bear Creek at Wailaki Campground 561 Comment
  HSC58397  Barbarea verna Terry Griswold, Marvin Butler 1979-7-11 6925 Humboldt Near Snow Camp Mtn., close to the town of Willow Creek 1320 Comment
  HSC100717  Barbarea vulgaris Carl C. Marshall Jun 1886 173 Humboldt Fields, Arcata. Comment
  JEPS31856  Bellis perennis Joseph P. Tracy 1937-6-20 15345 Humboldt 10 miles up from mouth of Bear River Bear River 152 Comment
  CAS-BOT-BC106352  Bellis perennis Joseph P. Tracy 1937-6-20 15345 Humboldt Bear River, ten miles up stream from the mouth. 152 Comment
  JEPS3738  Bensoniella oregona Rimo Bacigalupi and L. Constance with R. Moran, R. L. Rodriguez and Sherwin Carlquist 1951-6-14 3416 Humboldt close to the base Snow Camp Mt. (at Snow Camp, near summit of long high ridge (Bald Mt. ridge) between Mad River and Redwood Creek); nr summit Bald Mt. Snow Camp Mt, btw Mad River and Redwood C 1432 Comment
  HSC74672  Berberis aquifolium Gail Newton 1981-5-16 2172 Humboldt Near Bug Creek. 1228 Comment
  HSC76285  Berberis aquifolium var. aquifolium Denis Kearns 1981-6-24 7 Humboldt Near Cedar Camp 1219 Comment
  HSC31569  Berberis nervosa Glenn McGourty 1974-5-11 39 Humboldt Timber trail off Maple Creek Rd. in Kneeland Comment
  HSC37355  Berberis nervosa Gary S. Lester, Roger L. Yearout, Judith G. Dickson 1974-7-24 482 Humboldt Along Lost Man Creek. 38 Comment
  CAS-BOT-BC75800  Berberis pinnata Doris K. Kildale 1927-7-17 3759 Humboldt Bug Creek. 792 Comment
  CAS-BOT-BC75809  Berberis pinnata L. B. Kildale 1930-7-7 10260 Humboldt Chaparral Mountain at Bug Creek. 914 Comment
  CAS-BOT-BC412989  Bistorta bistortoides Volney Rattan 1882-1-1 s.n. Humboldt Kneeland Comment
  UC492236  Boechera acutina Joseph P. Tracy 1932-7-11 10396 Humboldt Corral Prairie Klamath Mountains, Trinity Summit 1524 Comment
  CHSC110704  Boechera subpinnatifida Dean Wm. Taylor 2004-6-24 19131 Humboldt Horse Mountain, along Titlow Hill Road 0.4 miles north from the junction with the road to the mountain summit; Grouse Mountain. 1310 Comment
  POM256473  Boisduvalia glabella Joseph P. Tracy 1938-7-5 16004 Humboldt Carlotta, open flat by old Strong s District School House, 5 miles east of town. 46 Comment
  HSC39874  Bolboschoenus robustus Peter Sorensen 1976-8-6 Humboldt King Salmon Comment
  HSC65854  Boschniakia strobilacea Gail Newton 1980-6-24 602 Humboldt Near Ladder Rock 1570 Comment
  SEINET5766918  Boschniakia strobilacea C. Young 1967-5-15 s.n. Humboldt Orleans Comment
  HSC56002  Boykinia major Overton, Butler 1979-7-31 11453 Humboldt Near Water Dog Lakes, close to the town of Hoopa 1830 Comment
  HSC56319  Boykinia major Overton, Butler 1979-8-2 12658 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  HSC99464  Boykinia major K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-14 118 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  UC492218  Boykinia major Joseph P. Tracy Jul 16 1930-Jul 19 1930 8935 Humboldt South Fork Mountain Northern Coast Ranges, South Fork Mountain (in wet meadow at McKay Camp) 1676 Comment
  UC667114  Boykinia major Joseph P. Tracy 1934-7-18 13448 Humboldt Grouse Mountain , at top of mountain (swampy meadow at top of mountain) 1615 Comment
  CAS-BOT-BC420263  Boykinia occidentalis Elizabeth Parsons Hawver 1915-6-1 s.n. Humboldt Carlotta Comment
  HSC20181  Boykinia occidentalis H. E. Parks, S. T. Parks Jun, Jul 1952 24451 Humboldt Spruce Cove, Trinidad 61 Comment
  HSC98977  Boykinia occidentalis Cara Witte 2008-7-28 958 Humboldt Grouse Mountain. Forest Service Road 5N04. Near spring. 1641 Comment
  CAS-BOT-BC36703  Brassica rapa John H. Thomas 1966-3-19 11487 Humboldt Southern end of Big Lagoon just inland from the coast between Eureka and Crescent City. Comment
  CAS-BOT-BC127681  Brickellia greenei Joseph P. Tracy 1934-9-5 13655 Humboldt Horse Mountain 1402 Comment
  HSC104040  Briza maxima C. Reynolds 2015-4-12 36 Humboldt Just off footpath at southern parking lot of Kuchel Visitor Center 4 Comment
  HSC8563  Briza maxima G. L. Martin 1966-5-10 41 Humboldt Mckinleyville, Mad River beach area in back of Ocean Dr., E side of river Comment
  UC1145097  Briza maxima Joseph P. Tracy 1950-5-30 18711 Humboldt Willow Creek Trinity River Valley 152 Comment
  UC526899  Briza maxima Joseph P. Tracy 1930-7-6 8848 Humboldt Iaqua North Coast Ranges 762 Comment
  HSC79436  Briza minor Kenneth Clark 1980-6-14 664 Humboldt Shelter Cove, lower alluvial terrace of Dead Man's Gulch 30 Comment
  RSA246907  Briza minor R. F. Thorne, P. Everett 1965-8-8 35245 Humboldt N. edge of Eureka, E. of Hwy. 101 5 Comment
  UC34059  Briza minor J. P. Tracy 1900-6-5 835 Humboldt Immediate vicinity of Eureka 0 Comment
  CAS-BOT-BC484217  Brodiaea elegans subsp. elegans Doris K. Kildale 1926-6-27 2209 Humboldt Larabee Valley 701 Comment
  UC666909  Brodiaea elegans subsp. elegans Joseph P. Tracy 1938-7-15 16060 Humboldt low sandy fields Eureka, Bucksport 9 Comment
  JEPS7624  Brodiaea stellaris Rimo Bacigalupi with L. Constance, R. Moran, R. L. Rodriguez, and S. Carlquist 1951-6-13 3406 Humboldt along state Hwy 36 5 mi e Bridgeville Comment
  JEPS5498  Brodiaea stellaris Joseph P. Tracy 1925-5-30 7024 Humboldt on grassy slopes Northern Coast Ranges, McClellan Mountain 822 Comment
  RSA168838  Brodiaea stellaris Joseph P. Tracy 1950-6-25 18903 Humboldt McClellen Mtn, just E of McClellen Rock, Burr Valley. 762 Comment
  UC666934  Brodiaea terrestris subsp. terrestris Joseph P. Tracy 1927-6-8 8111 Humboldt Trinidad 3 Comment
  CAS-BOT-BC484613  Brodiaea terrestris subsp. terrestris Ashley C. Browne 1936-6-11 s.n. Humboldt Patrick's Point State Park. Comment
  SBBG53059  Bromus R. N. Philbrick, J. R. Haller 1976-6-25 5 Humboldt Capetown-Ferndale Rd, NW of Cape Mendocino, ca. 4 mi NW of Bear River at Capetown 457 Comment
  BLMAR29  Bromus carinatus var. carinatus Brad Barr June, 1982 29 Humboldt King range, Spanish ridge facing south Comment
  HSC97612  Bromus carinatus var. carinatus Cara Witte 2007-6-4 198 Humboldt Cold Spring. 0.5 mile S of Titlow Hill. 1386 Comment
  UC1103274  Bromus carinatus var. carinatus J. P. Tracy 1900-7-4 883 Humboldt opposite Eureka (Ocean Beach at Somoa); Samoa, Ocean Beach Comment
  UC1145144  Bromus commutatus Joseph P. Tracy 1942-6-15 17130 Humboldt near Redcrest Resort (Englewood); Englewood 91 Comment
  UCD58456  Bromus commutatus A. H. Murphy 1951-6-13 62 Humboldt 2 miles south of Blocksburg. Tooby and Prior Ranch. Comment
  CAS-BOT-BC155994  Bromus diandrus Henry M. Pollard 1948-7-26 s.n. Humboldt Near mouth of Camp Creek near Orleans. Comment
  HSC103009  Bromus diandrus J. P. Smith 2014-5-20 13851 Humboldt Samoa Peninsula 6 Comment
  HSC40340  Bromus diandrus Linda M. Barker 1976-4-30 1403 Humboldt 3 mi. W of Arcata Comment
  UC180223  Bromus diandrus Joseph P. Tracy 1913-6-22 4273 Humboldt opposite Buck Mountain (in Valley of Van Duzen River, Dinsmore's Ranch); Northern Coast Ranges, Dinsmore's Ranch 762 Comment
  UC187100  Bromus diandrus Joseph P. Tracy 1904-5-1 2042 Humboldt Northern Coast Region, at Eureka Eureka; Northern Coast Region, Eureka 0 Comment
  HSC9239  Bromus hordeaceus T. L. Ackerman 1964-5-7 41 Humboldt 1.5 mi. W from Sweesey dam Comment
  SEINET11682985  Bromus hordeaceus K. S. Erdman 1970-1 4784 Humboldt Doleson Hill Prairie, Bald Hills Rd SE of Orick Comment
  SEINET200662 Image available Bromus hordeaceus subsp. hordeaceus Joseph P. Tracy 1923-6-20 6327 Humboldt Chamise Mountain near Shelter Cove 305 Comment
  CAS-BOT-BC162259  Bromus maritimus Roxana S. Ferris 1937-8-21 9389 Humboldt Shelter Cove. Comment
  SEINET202034 Image available Bromus orcuttianus Joseph P. Tracy 1949-7-19 18373 Humboldt Grouse Mtn. on Friday Ridge, at Friday's Camp 1219 Comment
  UCD59595  Bromus rubens A. H. Murphy 1951-5-21 s.n. Humboldt Tooby and Prior Ranch, Blocksburg Experimental grazing pasture. Comment
  UC204535  Bromus sterilis Joseph P. Tracy 1916-5-31 4701 Humboldt along Eel River from South Fork to Scotia, Stitz Creek Stitz Creek; Northern Coast Ranges, Eel River, Stitz Creek 60 Comment
  HSC58750  Bromus vulgaris Overton, Butler 1979-7-24 9617 Humboldt Near Titlow Hill, close to the town of Willow Creek 1250 Comment
  HSC75287  Bromus vulgaris J. O. Sawyer, M. A. Ericksen 1980-8-18 4059 Humboldt Slopes below Mill Creek Lakes, N Trinity Mtn. Research Natural Area 1707 Comment
  SEINET200938 Image available Bromus vulgaris Joseph P. Tracy 1926-5-2 7427 Humboldt Trinity River Valley, near the South Fork. Comment
  CHSC32805  Cakile maritima Lora L. Anderson 1981-4-25 2 Humboldt Ca. 500 yds e of ocean, 0.5 mi w of hwy 101, 11.5 mi nw of Arcata, beach. 0 Comment
  UCD114935  Cakile maritima M. Barbour 1969-9-4 s.n. Humboldt Just west of Trinidad and north, across isthmus from Trinidad Bay. Comment
  RSA647567  Cakile maritima var. maritima William Gilbert 1970-6-3 s.n. Humboldt 101 Hwy, 10 miles S [of] Klamath River. Comment
  CAS-BOT-BC185470  Calamagrostis canadensis Joseph P. Tracy 1932-7-14 10553 Humboldt Trinity Summit. Klamath Mountains. Corral Prairie. 1524 Comment
  UC1145051  Calamagrostis foliosa Joseph P. Tracy 1936-6-9 14899 Humboldt at bridge 3 mi e Petrolia (bluff bank of river); Mattole River 30 Comment
  JEPS71173  Calamagrostis nutkaensis W. L. Jepson 1936-8-18 17943 Humboldt Wildcat Ridge Comment
  UC673026  Calandrinia ciliata Joseph P. Tracy 1933-7-3 12638 Humboldt Willow Creek Trinity River Valley 152 Comment
  HSC25070  Callitriche stagnalis R. W. Becking 1972-8-20 Humboldt Big Lagoon, along Maple Creek above main water line. Comment
  HSC62829  Callitriche stagnalis J. M. DiTomaso 1979-5-29 1080 Humboldt Arcata Bottoms, 1.7 mi. W of Alliance Rd. on Lanphere Rd. Comment
  HSC56953  Calocedrus decurrens Overton, Butler 1979-7-23 9457 Humboldt Near Horse Mountain Mine, close to the town of Willow Creek 1295 Comment
  HSC58124  Calocedrus decurrens G. L. Clifton, Griswold 1979-8-1 12108 Humboldt Near Horse Trail Ridge 1878 Comment
  OBI7409  Calocedrus decurrens H. Wiedman July1966 s.n. Humboldt Near the Hoopa Valley Indian Reservation 366 Comment
  CAS-BOT-BC488459  Calochortus amabilis Myrtle Paulson 1918-4-28 s.n. Humboldt Eureka Comment
  UC667123  Calochortus amabilis Joseph P. Tracy 1916-6-19 4711 Humboldt Bosworth's Larrabee Creek 457 Comment
  HSC74278  Calochortus tolmiei M. A. Baker 1980-5-23 1395 Humboldt Near Buck Mtn. 1524 Comment
  UC1197673  Calochortus tolmiei Joseph P. Tracy 1921-4-24 5466 Humboldt Phillipsville, facing South Fork of Eel River Northern Coast Ranges 121 Comment
  SEINET12054002  Calochortus vestae J. P. Tracy 1950-1 18868 Humboldt Dobbyn Creek, 3 mi NE of Alderpoint 152 Comment
  UC1222546  Calochortus vestae Joseph P. Tracy 1950-7-6 19004 Humboldt 2 mi s Burr Valley (on the Albee Raod) 1158 Comment
  UC180238  Caltha biflora Joseph P. Tracy 1914-7-4 4525 Humboldt High Prairie on Bald Mountain; Northern Coast Ranges. 1066 Comment
  RSA167194  Calycadenia ciliosa Joseph P. Tracy 1948-9-20 18220 Humboldt Hoopa Valley 91 Comment
  RSA47142  Calycadenia truncata subsp. scabrella Doris K. Kildale 1925-9-4 982 Humboldt Redwood Creek Comment
  CAS-BOT-BC275367  Calycadenia truncata var. truncata Henry M. Pollard 1946-8-31 s.n. Humboldt Roadside near Perch Creek, near Orleans Comment
  HSC45315  Calypso bulbosa R. A. Vanbianchi 1972-4-14 Humboldt Tiptop Ridge, directly E of the town of Fieldbrook Comment
  UC1442908  Calypso bulbosa Theodore F. Niehaus 1970-4-14 913 Humboldt 5 mi w from Yager-Bridgeville Road (on Redwood House Road) Comment
  UCD138885  Calypso bulbosa var. occidentalis J. C. Arthur 1934-3-20 s.n. Humboldt exact location unknown. Comment
  HSC102606  Calyptridium monospermum M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-28 1593 Humboldt Slopes above Bret Hole and below trail 6E18, 1.5 km SSW of Trinity Summit. 1778 Comment
  UC673023  Calyptridium monospermum Joseph P. Tracy 1932-7-15 10590 Humboldt e of Corral Prairie (Trinity Summit); Trinity Summit 1828 Comment
  UC673024  Calyptridium umbellatum Joseph P. Tracy Jul 16 1930-Jul 19 1930 8946 Humboldt summit near Blake Lookout (South Fork Mountain); Northern Coast Ranges, South Fork Mountain 1706 Comment
  HSC71173  Calystegia occidentalis subsp. occidentalis Thomas W. Nelson 1977-5-30 3417 Humboldt Base of Eight Mile Ridge upstream from Anderson's Ford. 701 Comment
  HSC40013  Calystegia occidentalis subsp. occidentalis Thomas W. Nelson, Jane Nelson 1976-7-1 2914 Humboldt N side of Mt. Lassic (Signal Peak) 1738 Comment
  CDA39889  Calystegia silvatica subsp. disjuncta Thomas Nelson 1976-8-1 3166 Humboldt At the intersection of 11th and B Streets, Arcata. 0 Comment
  UC1222552  Camassia quamash J. P. Tracy 1951-6-14 19407 Humboldt Snow Camp 1402 Comment
  UC180216  Camassia quamash Joseph P. Tracy 1914-7-4 4538 Humboldt Bald Mountain, High Prairie High Prairie; Northern Coast Ranges, Bald Mountain, High Prairie 1066 Comment
  CAS-BOT-BC493384  Camassia quamash subsp. linearis M. S. Jussel 1931-5-1 s.n. Humboldt On road to Garberville Comment
  JEPS61544  Camassia quamash subsp. quamash Joseph P. Tracy 1930-7-17 9000 Humboldt South Fork Mountain, at McKay Camp South Fork Mountain; , McKay Camp 1676 Comment
  UC1174488  Campanula prenanthoides Volney Rattan 1883-6-30 Humboldt Comment
  SEINET10463752  Campanula scouleri Rattan 1883-6-29 RATTAN s.n. Humboldt Near Redwood Creek Comment
  UC492265  Capsella bursa-pastoris Joseph P. Tracy 1929-4-28 8544 Humboldt Trinity River Valley, at Willow Creek Willow Creek; Northern Coast Ranges, Trinity River Valley, Willow Creek 152 Comment
  UC161544  Cardamine breweri Joseph P. Tracy 1906-4-29 2432 Humboldt 2 mi from Fields Landing (s slope Humboldt Hill, region about Humboldt Bay); Northern Coast Region, about Humboldt Bay, Humboldt Hill 0 Comment
  CAS-BOT-BC37251  Cardamine breweri Joseph P. Tracy 1906-4-29 2432 Humboldt Northern Coast Region. Region about Humboldt Bay. South slope of Humboldt Hill. 152 Comment
  CAS-BOT-BC37419  Cardamine californica LeRoy Ellsworth Detling 1935-4-20 1643 Humboldt Redwood flat, 1 mile north of Dyerville. Comment
  HSC48991  Cardamine californica M. A. Baker 1979-5-23 758 Humboldt Comment
  HSC70563  Cardamine californica M. A. Baker 1980-7-19 3032 Humboldt Near Bret Hole. 1814 Comment
  UC1222655  Cardamine californica var. sinuata Joseph P. Tracy 1950-5-7 18651 Humboldt on the Redwood House Road 1 mi s Redwood House (on Yager Slope, head of South Yager Creek); head of South Yager Creek, on Yager Slope Comment
  HSC6639  Cardamine oligosperma S. J. Hawks 1965-3-12 4 Humboldt 0.5 mi. W of Fairhaven Comment
  HSC74460  Cardamine oligosperma M. A. Baker 1980-5-18 1356 Humboldt Near Black Mtn. 792 Comment
  UC1199205  Cardamine oligosperma Joseph P. Tracy 1933-5-18 12189 Humboldt near Blue Lake; along Mad River, near Blue Lake 15 Comment
  CAS-BOT-BC18516  Carex abrupta Joseph Prince Tracy 1932-7-14 10546 Humboldt Trinity Summit. Corral Prairie. 1584 Comment
  HSC76400  Carex aquatilis var. dives L. P. Janeway 1982-8-7 118 Humboldt Dry Lagoon, middle of lagoon 3 Comment
  CAS-BOT-BC18074  Carex athrostachya Joseph Prince Tracy 1934-7-18 13426 Humboldt North Coast Ranges. Grouse Mountain. 1524 Comment
  HSC43238  Carex bolanderi R. Sutherland 1977-4-5 5477 Humboldt 386 Comment
  UC1103102  Carex bolanderi Joseph P. Tracy 1926-6-6 7574 Humboldt Hoopa Mountain, near summit on road W from Hoopa to Bair's 1066 Comment
  UC194802  Carex bolanderi Joseph P. Tracy 1914-7-5 4549 Humboldt Bald Mountain, between High Prairie and Snow Camp 1066 Comment
  SEINET10752409  Carex brainerdii Joseph P. Tracy 1935-7-30 Tracy 14350 Humboldt On ridge 2 miles SW of top Shasta Fir Zone. Comment
  CAS-BOT-BC34972  Carex densa Joseph Prince Tracy 1938-6-9 15876 Humboldt Dobbyn Creek. 152 Comment
  CAS-BOT-BC34984  Carex densa Alice Eastwood; John Thomas Howell 1937-6-22 4735 Humboldt Near Alder Point. Comment
  UC562267  Carex densa Joseph P. Tracy 1935-5-25 13855 Humboldt Fort Seward 106 Comment
  UC303007  Carex echinata Joseph P. Tracy 1926-6-27 7666 Humboldt Horse Mountain Northern Coast Ranges 1463 Comment
  CHSC90287  Carex echinata subsp. echinata Thomas W. Nelson; Jane P. Nelson 1987-6-11 8602 Humboldt North Coast Ranges. Box Spring at Box Camp. Along trail to North Trinity Mountain. 1524 Comment
  HSC99593  Carex feta K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-8-10 254 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  SEINET7708306 Image available Carex feta J. P. Tracy 1950-7-6 19010 Humboldt Albee Road; Buck Mountain, 3 mi S of Burr Valley Comment
  JEPS25968  Carex geyeri Joseph P. Tracy 1933-7-11 12662 Humboldt Horse Mountain 1432 Comment
  UC1108985  Carex gynodynama H. E. and S. T. Parks May, 1937 5813 Humboldt Spruce Cove, Trinidad, near sea level. Comment
  CHSC34064  Carex hendersonii Joseph P. Tracy 1905-6-25 2202 Humboldt Northern Coast Region of California. At Eureka. 30 Comment
  UC585636  Carex hoodii Joseph P. Tracy 1937-6-27 15377 Humboldt mountain slopes w mouth of South Fork of Trinity River; 4-mile Creek 670 Comment
  SEINET3836749 Image available Carex integra Joseph P. Tracy 1926-7-5 7723 Humboldt Near the Redwood House, on road to head of Yager Comment
  CAS-BOT-BC31263  Carex lenticularis var. impressa Joseph Prince Tracy 1932-7-14 10555 Humboldt Trinity Summit, Corral Prairie, in wet meadow. 1584 Comment
  CAS-BOT-BC28501  Carex lenticularis var. limnophila Robert F. Thorne 1965-9-19 35461 Humboldt Freshwater Lagoon S of Orick. 3 Comment
  HSC58803  Carex lenticularis var. lipocarpa G. L. Clifton, Griswold 1979-7-31 11681 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1805 Comment
  HSC7139  Carex leptalea B. D. Rogers 1965-10-2 1021 Humboldt Big Lagoon 0 Comment
  HSC95146  Carex leptalea Gordon Leppig 2003-6-11 1958 Humboldt Big Lagoon County Park, Big Lagoon Bog 3 Comment
  UC249762  Carex leptalea Joseph P. Tracy 1924-7-13 6722 Humboldt Big Lagoon Northern Coast Region 6 Comment
  CAS-BOT-BC31466  Carex leptopoda Joseph Prince Tracy 1935-6-8 13937 Humboldt Eureka. 60 Comment
  UC562437  Carex luzulina var. ablata Joseph P. Tracy 1932-7-14 10560 Humboldt Corral Prairie Trinity Summit 1584 Comment
  CHSC90270  Carex lyngbyei Thomas W. Nelson; Jane P. Nelson 1987-4-27 8435 Humboldt North Coast Ranges. Along estuary to Cooper Gulch south side of street crossing. 1 Comment
  UC194811  Carex lyngbyei Joseph P. Tracy 1915-6-6 4646 Humboldt near mouth Elk River (region about Humboldt Bay); Northern Coast Region 0 Comment
  RSA0014503  Carex mendocinensis Joseph P. Tracy 1926-6-6 7576 Humboldt Hoopa Mountain. On road west from Hoopa Valley. 915 Comment
  CAS-BOT-BC119537  Carex nudata Joseph Prince Tracy 1935-6-22 13959 Humboldt Eel River, at mouth of Larrabee Creek. Comment
  CAS-BOT-BC119546  Carex nudata A. A. Heller 1923-7-10 13795 Humboldt Along the Eel River between Scotia and Pepperwood Comment
  HSC39186  Carex nudata D. E. Anderson, J. P. Smith 1971-6-28 1214 Humboldt Along Mad River, 2 mi. S of Blue Lake. Comment
  CAS-BOT-BC119545  Carex nudata L. P. Janeway 1983-7-23 438 Humboldt Orleans quad. Along the E side Klamath River at N end of Dolan Bar ca 1 mi N of Orleans 91 Comment
  HSC7063  Carex obnupta J. W. Johnson 1962-4-11 1242 Humboldt Arcata, Dune 3 North, Christenson Farm, Samoa Peninsula Comment
  JEPS80016  Carex obnupta Joseph P. Tracy 1906-5-13 2459 Humboldt Ocean Beach at Humboldt Bay Northern Coast Region, Humboldt Bay Comment
  UC585634  Carex ovalis Joseph P. Tracy 1937-8-7 15617 Humboldt Murphy Ridge Bald Mt. 914 Comment
  CHSC42978  Carex pansa L. P. Janeway 1987-7-31 2537 Humboldt Vicinity of Eureka; North Spit of Humboldt Bay near the SE corner of Eureka City Airport. 3 Comment
  CAS-BOT-BC118598  Carex praticola Joseph Prince Tracy 1914-5-3 4421 Humboldt At Eureka 60 Comment
  CAS-BOT-BC118007  Carex rossii Joseph Prince Tracy 1927-6-19 8201 Humboldt Big Lagoon 15 Comment
  SDSU11677  Carex stipata W. A. Bemis 1964-5-4 273 Humboldt Freshwater Forest, Freshwater. (SE1/4, SE1/4, Sec. 28, T6N R1E HBM 98 Comment
  HSC45953  Carex straminiformis J. P. Smith, Steve Selva 1970-6-30 4126 Humboldt Comment
  SEINET200796  Carex subbracteata J. P. Tracy 1928-6-24 8465 Humboldt Valley of S Yager Creek 0 Comment
  HSC48739  Carex subfusca Brad Klipfel 1973-6-10 64 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  CAS-BOT-BC115573  Carex tumulicola Joseph Prince Tracy 1935-6-16 11270 Humboldt Buck Mt. Lower NW slopes on grassy hillside. 792 Comment
  JEPS80033  Carex unilateralis Joseph P. Tracy 1912-7-21 3783 Humboldt Alton; Northern Coast Region 30 Comment
  UC1152074  Carex unilateralis Joseph P. Tracy 1948-6-13 18034 Humboldt Larrabee Creek Road, halfway between Bridgeville and Blocksburg; Larrabee Valley 731 Comment
  CAS-BOT-BC115285  Carex utriculata Joseph Prince Tracy 1934-8-29 13622 Humboldt South Fork Mountain; in wet meadow at McKay Camp Comment
  CAS-BOT-BC114983  Carex viridula Robert F. Thorne; P. Everett 1965-8-7 35198 Humboldt Big Lagoon at edge of bog at S end of Lagoon. 1 Comment
  SEINET7581203 Image available Carex viridula H. E. Parks 5214 Humboldt South of Orick. Comment
  UC249753  Carex viridula var. viridula Joseph P. Tracy 1924-7-13 6720 Humboldt Big Lagoon Northern Coast Region 6 Comment
  HSC98629  Castilleja affinis subsp. affinis Cara Witte 2007-6-4 184 Humboldt Cold Spring. 0.5 mile S of Titlow Hill. 1386 Comment
  JEPS25062  Castilleja affinis subsp. affinis Joseph P. Tracy 1942-7-1 17366 Humboldt opposite Buck Mountain (Dinsmore's, along Van Duzen River); Van Duzen River 762 Comment
  HSC30755  Castilleja affinis subsp. litoralis Thomas W. Nelson 1974-4-20 1180 Humboldt Elk Head, N of Trinidad Comment
  JEPS3694  Castilleja affinis subsp. litoralis L. R. Heckard and P. C. Silva 1952-5-10 271 Humboldt just s Humboldt Bay; Table Bluff Comment
  JEPS55949  Castilleja affinis subsp. litoralis T. I. Chuang and L. R. Heckard 1968-7-3 6456 Humboldt Table Bluff Comment
  UC1374929  Castilleja affinis subsp. litoralis Noel H. Holmgren and Liew Fah Seong 1969-6-24 3611 Humboldt 5.6 mi w Ferndale Comment
  UC146237  Castilleja ambigua subsp. humboldtiensis Joseph P. Tracy 1900-7-4 867 Humboldt Samoa; North Coast Region, Humboldt Bay Region 0 Comment
  JEPS3616  Castilleja applegatei subsp. martinii Clyde Ritchie Bell 1951-4-21 1036 Humboldt Just south of Somes Bar and immediately south of the Siskiyou-Humboldt County line, along Calif. State Highway 96 (Klamath River Road). Comment
  RSA132832  Castilleja applegatei subsp. pinetorum Peter H. Raven, Sidney R. Snow 1958-7-20 13636 Humboldt 2 miles south of jct. of Friday Ridge Road on Titlow Hill Road, near Grouse Mountain Comment
  UC1011932  Castilleja applegatei subsp. pinetorum F. W. Pennell and J. P. Tracy 1940-7-7 26097 Humboldt w of Salyer; Grouse Mountain 1493 Comment
  UC673218  Castilleja attenuata Lincoln Constance and Reed C. Rollins 1942-5-12 2891 Humboldt 1 mi s Orleans (Klamath River); Klamath-Siskiyou Region, Klamath River 121 Comment
  JEPS108698  Castilleja exserta C. Sander 2005-8-16 CA 330 81 Humboldt Manila Dunes 3 Comment
  JEPS103929  Castilleja pruinosa T. I. and F. M. Chuang 1991-7-9 7875 Humboldt 4.3 mi SE of junction of rt. 299 and Titlow Hill Rd. on way to Horse Mt. Comment
  UC1196742  Castilleja pruinosa Joseph P. Tracy 1939-4-29 16230 Humboldt opposite mouth of Hors Linto Creek; Trinity River 152 Comment
  UC535100  Castilleja rubicundula subsp. lithospermoides Parks and Tracy 1930-5-25 796 Humboldt vicinity Bridgeville; Laribee Valley Comment
  UCR141621  Ceanothus arcuatus J. M. Tucker 1948-9-3 1852 Humboldt Six Rivers National Forest (formerly part of Trinity National Forest) on Horse Mountain at junction of road to Grouse Mt. and road to Horse Mt. Mine 1463 Comment
  HSC78651  Ceanothus cordulatus D. K. Imper 1982-7-13 1485 Humboldt Near Chaparral Mtn. 1386 Comment
  RSA398822  Ceanothus cordulatus Thomas W. Nelson, Jane P. Nelson 1976-6-22 2869 Humboldt Goat Mtn lookout 1666 Comment
  CAS-BOT-BC126841  Ceanothus cuneatus Thomas Nelson 1977-6-15 3453 Humboldt unspecified 1371 Comment
  UC1193330  Ceanothus cuneatus var. cuneatus K. Cuff Sep 1950 125 Humboldt 6 mi nw Garberville (rocky ridgecrest of Bear Butte); Quad. 29C1 762 Comment
  HSC37596  Ceanothus foliosus var. foliosus R. Sutherland 1975-5-28 15 .28575 Humboldt 503 Comment
  RSA600899  Ceanothus foliosus var. foliosus Louis C. Wheeler 1959-8-1 7619 Humboldt Queens Peak Mine. Comment
  HSC37051  Ceanothus incanus R. Sutherland 1975-5-8 4 .8575 Humboldt Wilder Ridge, near county rd. 8 mi SE of Honeydew, 8 mi W of Mattole River, bridge at Ettersburg Comment
  CAS-BOT-BC50050  Ceanothus incanus Doris K. Kildale 1927-6-25 3579 Humboldt at Thorn near schoolhouse road Comment
  RSA186940  Ceanothus integerrimus Marcus E. Jones 1931-7-16 28946 Humboldt Junction, East of Arcata. Comment
  UC164817  Ceanothus integerrimus J. P. Tracy 1903-5-24 1907 Humboldt Alder Point Eel River 152 Comment
  HSC101656  Ceanothus oliganthus var. sorediatus J. P. Smith, J. O. Sawyer 2011-4-23 13116 Humboldt Along Salmon Creek Rd., 3.4 miles from its junction with U.S. 101. 203 Comment
  RSA25753  Ceanothus parryi Carl B. Wolf 1941-7-28 11092 Humboldt Slope along Eel River, 1 mile S of Miranda. 30 Comment
  SD53199  Ceanothus parryi D. F. Howe 1962-5-21 Humboldt 2.3 miles north of Garberville on #101 152 Comment
  HSC43188  Ceanothus pumilus R. Sutherland 1976-4-17 1 .17476 Humboldt 549 Comment
  HSC43226  Ceanothus pumilus R. Sutherland 1976-4-17 6 .17476 Humboldt 549 Comment
  CAS-BOT-BC52951  Ceanothus thyrsiflorus Joseph P. Tracy 1937-5-30 15317 Humboldt Bridgeville 198 Comment
  RSA25754  Ceanothus thyrsiflorus Carl B. Wolf 1941-7-28 11089 Humboldt Summit of Trinidad Head. 46 Comment
  UC1071396  Ceanothus thyrsiflorus A. E. Wieslander 1931-5-22 220 Humboldt near Briceland; Briceland Quad. Comment
  UCD170772  Ceanothus thyrsiflorus Gordon Leppig 1998-5-11 756 Humboldt Rt. #101 mile marker 97.71. 30 Comment
  HSC43224  Ceanothus velutinus R. Sutherland 1975-12-6 2 .61275 Humboldt 305 Comment
  HSC97570  Ceanothus velutinus Cara Witte 2007-6-5 215 Humboldt Along Forest Service Road 4N32. Near Grouse Mountain 1486 Comment
  POM203232  Ceanothus velutinus M. S. Jussel 1931-5-2 s.n. Humboldt near Garberville Comment
  UC1199120  Centaurea X moncktonii Joseph P. Tracy 1933-8-22 12973 Humboldt at Eureka Eureka 60 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
  HSC100711  Centaurea melitensis Carl C. Marshall Jun 1886 287 Humboldt Hooker's near Hoopa. Comment
  UC726373  Centaurium muehlenbergii A. A. Heller 1923-7-8 13768 Humboldt 8 mi s Dyerville Comment
  CAS-BOT-BC279138  Centromadia pungens subsp. pungens Volney Rattan 1878-1-1 s.n. Humboldt Unspecified Comment
  UC1198612  Centunculus minimus Joseph P. Tracy 1930-6-15 8747 Humboldt near Bosworth's (Northern Coast Ranges, Larrabee Creek); Northern Coast Ranges, Larrabee Creek 457 Comment
  CAS-BOT-BC384896  Cerastium arvense L. R. Abrams 1916-7-18 6134 Humboldt Arcata to Trinidad Comment
  SBBG2066  Cerastium arvense H. and M. Dearing 1933-5-16 236 Humboldt near Garberville Comment
  HSC45053  Cerastium arvense R. Sutherland 1978-4-24 11 .24478 Humboldt Kinsey Ridge, gravel slide of road cut 323 Comment
  SD42481  Cerastium viride Carl B. Wolf 1937-6-18 8883 Humboldt Table Bluff, between Humboldt Bay and Eel River. Comment
  HSC74573  Cercis occidentalis M. A. Baker 1980-5-17 1245 Humboldt Near Le Perron Peak 1066 Comment
  UC492184  Cercocarpus betuloides var. betuloides Joseph P. Tracy 1929-8-25 8661 Humboldt Trinity River Valley, at Willow Creek Willow Creek; Northern Coast Ranges, Trinity River Valley, Willow Creek 152 Comment
  MACF027376  Chamaecyparis lawsoniana S. R. Ganley 1972-3-26 1053 Humboldt Along Hwy. 299 365 Comment
  RSA47095  Chamaecyparis lawsoniana Doris K. Kildale 1926-8-15 2522 Humboldt Willow Creek Flat-- up Willow Creek above[?] 3 mi. from mouth 152 Comment
  CDA30234  Chamaesyce serpyllifolia M. K. Beyers, I. Shepardson 2009-9-13 236 Humboldt In dry portion of the eastern side of the Eel River, east of State Route 254 (Avenue of the Giants) and Highway 101. Just west of the unincorporated community of Shively. 0 Comment
  CAS-BOT-BC166038  Chamerion angustifolium subsp. circumvagum Henry M. Pollard 1946-8-28 s.n. Humboldt Near summit of Orleans Mt. 1828 Comment
  HSC55194  Chamerion angustifolium subsp. circumvagum G. L. Clifton, Griswold 1979-8-2 12274 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  SEINET200780  Chamerion angustifolium subsp. circumvagum Joseph P. Tracy 1932-7-17 10664 Humboldt Ridges east of Corral Prairie. 1676 Comment
  POM182457  Cheilanthes gracillima Joseph P. Tracy 1908-7-3 2765 Humboldt Dinsmore's Ranch, in valley of Van Duzen River opposite Buck Mountain 762 Comment
  UC673038  Chenopodium atrovirens Joseph P. Tracy 1932-7-13 10500 Humboldt Corral Prairie Trinity Summit 1584 Comment
  HSC76590  Chimaphila menziesii Denis Kearns 1981-7-24 448 Humboldt Near Whiteys Peak. 1768 Comment
  UC21649  Chimaphila menziesii J. Burtt Davy 1899-6-18 5620 Humboldt Bald Mt. near Korbel; Bald Mt. Comment
  HSC99516  Chimaphila umbellata subsp. occidentalis K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-22 179 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  RSA20793  Chimaphila umbellata subsp. occidentalis C. B. Wolf 1937-8-13 9258 Humboldt North coast range, 11 mi. E. of Hoopa Valley on new road toward Trinity Summit. 1524 Comment
  CAS-BOT-BC36486  Chrysolepis chrysophylla Joseph P. Tracy 1940-8-25 16715 Humboldt Bald Mountain 975 Comment
  CHSC23196  Chrysolepis chrysophylla Robert F. Thorne 1965-8-5 35134 b Humboldt Mt. Chamisal: below summit. 746 Comment
  UCSB1015  Chrysolepis chrysophylla Muller, Cornelius 1954-6-21 Humboldt 8 mi. ESE of Mad River on road to Forest Glen Comment
  JEPS156  Cicuta douglasii W. L. Jepson 1936-8-17 17930 Humboldt near Arcata (s of Salmon Creek, Mad River); Mad River Comment
  SD58270  Cicuta douglasii W. L. Jepson 1936-8-17 17930 Humboldt Marsh south of Salmon Creek Comment
  HSC55863  Circaea alpina subsp. pacifica G. L. Clifton, Griswold 1979-7-25 10872 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1784 Comment
  UC1198515  Circaea alpina subsp. pacifica Joseph P. Tracy 1935-7-23 14159 Humboldt lower end Brett Hole (Trinity Summit); Trinity Summit 1584 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
  UC1714534  Circaea alpina subsp. pacifica Chesnut and Drew 1888-7-9 Humboldt Campbell's Comment
  JEPS59187  Cirsium arvense W. L. Jepson 1936-8-17 17927 Humboldt 3 mi s Fields Landing Comment
  HSC5386  Cirsium brevistylum H. E. Parks, J. P. Tracy 1934-7-13 13383 Humboldt Trinidad Head 61 Comment
  HSC81713  Cirsium brevistylum Thomas W. Nelson, Jane P. Nelson 1980-8-12 6239 Humboldt Logging roads S of Lundbar Hills 61 Comment
  JEPS89473  Cirsium douglasii var. breweri Dean W. Taylor 1991-8-15 12302 Humboldt ridge 1 mi w of Horse Mountain (North Coast Ranges); North Coast Ranges 1493 Comment
  SEINET11263070  Cirsium douglasii var. canescens Thomas Nelson 1976-7-9 2987 Humboldt Beside 1S07 just west of summit.; 0 1585 Comment
  RSA0070609  Cirsium douglasii var. douglasii Joseph P. Tracy 1924-7-6 6717 Humboldt Near Ruby Creek, on the Willow Creek Highway. 610 Comment
  OBI36336  Cirsium occidentale var. candidissimum David J. Keil 1983-7-1 17273 Humboldt Ca 13 mi W of jctn US 101 along Bull Crk Flats Rd Comment
  UC302187  Cirsium remotifolium Joseph P. Tracy 1926-7-5 7740 Humboldt Iaqua Northern Coast Ranges, Iaqua 609 Comment
  RSA0070877  Cirsium remotifolium Joseph P. Tracy 1949-8-11 18472 Humboldt East of headwaters of Redwood Creek, beginning where the electric power line crosses, and working south. Kinsey Ridge, south from Grouse Mt., 2 to 6 miles. 1280 Comment
  UC582538  Cirsium remotifolium var. rivulare Joseph P. Tracy 1934-7-6 13659 Humboldt Kneeland Prairie 762 Comment
  HSC32535  Cirsium vulgare Thomas W. Nelson 1973-9-3 1127 Humboldt McKeown Ranch N of Dinsmore Comment
  JEPS59244  Cirsium vulgare Lincoln Constance 1934-6-11 853 Humboldt Bull Cr. road to Dyerville; Bull Creek Region, South Fork Eel River, Lower Look Prairie Comment
  JEPS59312  Cirsium vulgare W. L. Jepson 1936-8-12 17890 Humboldt Philipsville South Fork Eel River, Philipsville Comment
  UCR123961  Clarkia affinis George K. Helmkamp, E. A. Helmkamp 2001-7-8 6967 Humboldt North coast hills., Calif. Hwy 36, 2.2 mi west of Dinsmore 732 Comment
  HSC104439  Clarkia amoena Greg O'Connell 2013-6-27 Humboldt Summit of Mt. Andy 1159 Comment
  UC144097  Clarkia amoena Joseph P. Tracy 1907-7-4 2584 Humboldt just n of mouth Little River; Northern Coast Ranges 320 Comment
  CAS-BOT-BC160917  Clarkia amoena subsp. amoena C. Hart Merriam 1922-7-13 s.n. Humboldt Fortuna Comment
  CAS-BOT-BC160958  Clarkia amoena subsp. amoena Doris K. Kildale 1927-7-25 3836 Humboldt Table Bluff Comment
  CAS-BOT-BC160965  Clarkia amoena subsp. amoena Lester Rowntree 1937-8-18 s.n. Humboldt Between Ferndale & Capetown Comment
  CAS-BOT-BC160966  Clarkia amoena subsp. amoena Alice Eastwood 1921-7-21 10663 Humboldt [Vanduzen] Van Duzen River, along the road Comment
  UC204004  Clarkia amoena subsp. amoena Joseph P. Tracy 1918-7-3 4989 Humboldt Wilder Ridge Northern Coast Ranges, Kings Peak Range 762 Comment
  POM271818  Clarkia amoena subsp. huntiana Lyman Benson 1929-7-19 1865 Humboldt Dyerville to Matole River. Comment
  CAS-BOT-BC164181  Clarkia concinna Doris K. Kildale 1929-5-26 9153 Humboldt Klamath River at Orleans 152 Comment
  HSC16277  Clarkia concinna subsp. concinna J. E. Lankila 1962-5-6 13 Humboldt W bank of Eel River across from Shively, .25 mi. from Bear Creek Comment
  JEPS25696  Clarkia concinna subsp. concinna P. C. Hutchison 1961-5-22 2028 Humboldt ca. 4 mi n Orleans (hiway 299, e side of river); Klamath River Comment
  RSA244979  Clarkia concinna subsp. concinna B. D. Rogers, W. J. Ferlatte 1966-6-15 2105 Humboldt Larabee Valley 762 Comment
  CAS-BOT-BC172511  Clarkia purpurea subsp. quadrivulnera Volney Rattan 1878-1-1 s.n. Humboldt Unspecified Comment
  UC58856  Clarkia purpurea subsp. quadrivulnera Harley P. Chandler June 1901 1471 A Humboldt Klamath River North Coast Ranges 304 Comment
  CAS-BOT-BC172514  Clarkia purpurea subsp. quadrivulnera Paul F. Covel 1937-7-11 888 Humboldt Near Garberville Comment
  HSC16258  Clarkia purpurea subsp. quadrivulnera B. D. Rogers, William J. Ferlatte 1966-6-15 2096 Humboldt E of Bridgeville on Hwy. 36 671 Comment
  JEPS43741  Clarkia purpurea subsp. viminea Lincoln Constance 1934-5-23 619 Humboldt upper end Look Prairie; Bull Creek Region, South Fork Eel River 365 Comment
  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
  SEINET10492532  Clarkia rhomboidea Lincoln Constance 1934-6-15 Constance 880 Humboldt Summit of Grasshopper Peak, South Fork EeL River, Bull Creek Region. 3200 feet. 975 Comment
  UC183596  Claytonia exigua subsp. glauca Joseph P. Tracy 1913-5-4 4049 Humboldt Kneeland Prairie; Northern Coast Ranges 762 Comment
  HSC71064  Claytonia perfoliata Thomas W. Nelson, Jane P. Nelson 1977-5-30 3398 Humboldt Mckeown Ranch, along road to Anderson's Ford 854 Comment
  HSC17678  Claytonia perfoliata subsp. mexicana J. L. Baker 1965-4-13 47 Humboldt 4 mi. N of Arcata on N Bank Rd. Comment
  UC183594  Claytonia perfoliata subsp. perfoliata Joseph P. Tracy 1913-5-4 4057 Humboldt Kneeland Prairie; Northern Coast Ranges 762 Comment
  UC183593  Claytonia rubra subsp. depressa Joseph P. Tracy 1913-3-23 4027 Humboldt Humboldt Bay Northern Coast Region (Ocean Beach) Comment
  HSC73631  Claytonia sibirica M. A. Baker 1980-7-22 3131 Humboldt Near Grogan Hole. 1676 Comment
  HSC45492  Claytonia sibirica Maralyn O'Meara 1972-6-8 103 Humboldt Along Bald Hills Rd., 18 mi. from junction with Hwy. 101 Comment
  HSC89609  Claytonia sibirica M. Roantree 1985-5-24 54 Humboldt NW side of Trinidad Head, along trail Comment
  HSC98695  Claytonia sibirica C. Witte 2007-5-21 53 Humboldt Board Camp Mountain. Near intersection of Forest Service Road 4N38 with National Forest 1. 1394 Comment
  CAS-BOT-BC92592  Clematis ligusticifolia J. Clausen 1932-9-19 697 Humboldt Dyerville, Eel River. Comment
  UC1134574  Clintonia andrewsiana A. E. Wieslander 1931-5-17 194 Humboldt Orick-Orleans Road Comment
  SEINET12051465  Clintonia andrewsiana F. H. Utech, Sato, T.; Ohara, M. 1990-1 90 -287 Humboldt Humboldt Redwoods State Park, Jensen Grove 50 Comment
  UC179954  Clintonia andrewsiana Joseph P. Tracy 1914-5-17 4473 Humboldt between Ryans Slough and Freshwater Creek (at the Cumens Claim, region about Humboldt Bay); Northern Coast Region 304 Comment
  BLMAR639  Collinsia grandiflora Jennifer Wheeler 2011-6-21 639 Humboldt Lacks Creek, Pine Ridge Road 1158 Comment
  SBBG27286  Collinsia grandiflora H. E. Parks, J. P. Tracy 1930-5-25 741 Humboldt Laribee Valley (Larabee Valley) 762 Comment
  JEPS25056  Collinsia grandiflora Joseph P. Tracy 1922-5-29 6077 Humboldt South Yager Creek Valley 762 Comment
  HSC40014  Collinsia greenei Thomas W. Nelson, Jane P. Nelson 1976-7-1 2915 Humboldt Along N side of Mt. Lassic (Signal Peak) 1738 Comment
  UC582466  Collinsia heterophylla Joseph P. Tracy 1935-5-25 13896 Humboldt Dobbyn Creek 152 Comment
  HSC99026  Collinsia linearis Cara Witte 2008-7-1 788 Humboldt Near Grouse Mountain. Along Forest Service Road 4N32. Approximately .5 mile south of intersection with 5N04 and 4N32E. 1406 Comment
  HSC20635  Collinsia linearis D. E. Anderson 1965-6-1 3777 Humboldt Along Ridge Rd., about 7 mi. NE of its Jct. with Titlow Hill Rd. Comment
  UC582463  Collinsia parviflora Joseph P. Tracy Jul 16 1930-Jul 19 1930 8959 Humboldt near McKay Camp (Northern Coast Ranges, South Fork Mountain); Northern Coast Ranges, South Fork Mountain 1676 Comment
  HSC39622  Collinsia parviflora Thomas W. Nelson, Jane P. Nelson 1976-6-15 2726 Humboldt Along old trail above Alder Springs 1585 Comment
  UC582464  Collinsia parviflora Joseph P. Tracy 1933-7-13 12567 Humboldt Hoopa Mountain near summit on road from Hoopa westward to Bair's Hoopa Mountain 1066 Comment
  JEPS117  Collinsia rattanii Volney Rattan Jun 1884 Humboldt Black Butte; Coast Mtns Comment
  UC582447  Collinsia torreyi var. wrightii Joseph P. Tracy 1935-7-28 14314 Humboldt Trinity Summit, Head of Devils Hole Head of Devils Hole; Trinity Summit, Head of Devils Hole 1828 Comment
  HSC48850  Collomia grandiflora Brad Klipfel 1973-7-15 208 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC16921  Collomia heterophylla D. E. Anderson 1965-5-15 3699 Humboldt 5 mi. N of Hoopa on Bald Hills Rd. 198 Comment
  HSC97228  Collomia tinctoria Kiera A. Freeman, Heather J. Perry 2007-6-11 6 Humboldt 14.1 mi. S of Hwy. 299 on NF1 1372 Comment
  HSC70702  Collomia tracyi Gail Newton 1980-7-15 1550 Humboldt Near Sims Mtn. 1311 Comment
  JEPS26237  Collomia tracyi Joseph P. Tracy 1939-8-16 16420 Humboldt Grouse Mountain 1524 Comment
  UC23379  Collomia tracyi Harley P. Chandler June 1901 1475 Humboldt Klamath River North Coast Ranges 426 Comment
  UC978533  Collomia tracyi Joseph P. Tracy 1927-6-12 8161 Humboldt in slide rock Northern Coast Ranges, Horse Mountain 1066 Comment
  UC978536  Collomia tracyi Joseph P. Tracy 1932-7-12 10468 Humboldt head of Brett Hole Trinity Summit (rocky exposed places) 1828 Comment
  UC1196451  Corallorhiza maculata Joseph P. Tracy 1932-7-17 10663 Humboldt near Corral Prairie; Trinity Summit 1584 Comment
  UC176373  Corallorhiza maculata Joseph P. Tracy 1913-6-17 4191 Humboldt Buck Mountain Northern Coast Ranges (near summit) 1524 Comment
  UC13532  Corallorhiza mertensiana Chesnut and Drew 1888-7-9 Humboldt Kneeland Comment
  HSC98347  Corallorhiza striata T. Jimerson, J. Pageau 1979-6-12 527 Humboldt Near Hopkins Butte, close to the town of Orleans. 1036 Comment
  HSC37701  Corallorhiza striata A. Montalvo, J. D. Ackerman 1976-5-16 756 Humboldt 0.25 mi. E of State Hwy. 299 on Chezem Rd., W of Redwood Creek Valley Comment
  UC1196463  Corallorhiza striata Joseph P. Tracy 1926-5-15 7497 Humboldt Ashfield Butte Northern Coast Ranges, Kneeland Prairie 762 Comment
  RSA0084713  Cordylanthus maritimus subsp. canescens Arnold Tiehm 2002-8-14 14063 Humboldt Black Rock Desert, Casey Springs, 2.1 road miles N of Black Rock Springs. 1204 Comment
  HSC90429  Cordylanthus maritimus subsp. palustris Jean Hanson 1980-6-22 98 Humboldt Indian (Gunther) Island, Humboldt Bay, city of Eureka: W side of dike on NW side of island. Comment
  UC175787  Cordylanthus maritimus subsp. palustris Joseph P. Tracy 1912-6-16 3697 Humboldt Hookton Northern Coast Region, Region about Humboldt Bay (salt marsh) 0 Comment
  UC1199414  Corethrogyne filaginifolia Joseph P. Tracy 1918-7-3 4995 Humboldt Shelter Cove 15 Comment
  UC1223036  Corethrogyne filaginifolia Joseph P. Tracy 1950-6-18 18764 A Humboldt 1 mi w of town Petrolia Comment
  CAS-BOT-BC212179  Cornus sericea Joseph P. Tracy 1929-8-18 8653 Humboldt Dinsmore's Ranch, on Van Duzen River opposite Buck Mountain 670 Comment
  HSC58084  Cornus sericea subsp. occidentalis G. L. Clifton, Griswold 1979-8-1 11989 Humboldt Near Mill Creek Lakes, close to the town of Hoopa 1707 Comment
  HSC93466  Cortaderia selloana Gordon Leppig 1998-10-26 1106 Humboldt Arcata, Bayside Rd. at Crescent Way 6 Comment
  UC1222291  Corylus californica Joseph P. Tracy 1951-7-24 19624 Humboldt Blue Slide. on Van Duzen River 91 Comment
  BLMAR492  Corylus cornuta subsp. californica Jennifer Wheeler 2009-4-30 492 Humboldt King range, Hidden Valley trail; near overlook Comment
  UCD110083  Corylus cornuta subsp. californica M. Risling 1975-2-15 s.n. Humboldt ca. 3 miles from Hwy 96, along Tish Tang Road. Comment
  SEINET12034008  Corylus cornuta var. californica J. P. Tracy 1951-1 19624 Humboldt along Van Duzen at Blue Slide 91 Comment
  HSC5421  Cotula australis D. E. Anderson 1963-3-16 2388 Humboldt At foot of Scotia Bluffs Comment
  CAS-BOT-BC291340  Cotula coronopifolia Mrytle Paulson 1918-4-28 s.n. Humboldt Eureka Comment
  HSC5429  Cotula coronopifolia Rollin Sparrowe 1962-4-28 4 Humboldt In sloughs N and S of road Comment
  UC1080303  Crataegus gaylussacia E. K. Balls 1957-5-25 22602 Humboldt State Hwy 36, Van Duzen River, W of Trinity-Humboldt Co. line 731 Comment
  CAS-BOT-BC376515  Crepis Volney Rattan 1867-6-1 s.n. Humboldt Unspecified Comment
  UC581731  Crepis acuminata Joseph P. Tracy 1935-7-30 14382 Humboldt Salmon Summit 2103 Comment
  HSC96260  Crepis pleurocarpa Laurel Goldsmith, Wanda Naylor 2005-6-15 10 Humboldt 1 mi. SE of Grouse Mtn. on unnamed F.S. road 1400 Comment
  UCD130981  Crepis setosa Joseph P. Tracy 1948-9-20 18215 Humboldt Hoopa Valley. 106 Comment
  CDA2722  Crocosmia X crocosmiiflora T. C. Fuller 1968-7-3 17446 Humboldt Northwest corner of overpass of Hwy 101 freeway to Garberville, 1 miles south of Fields Landing. 0 Comment
  UC32552  Cryptantha flaccida Hy-Am Pum Jul 1888 Humboldt Comment
  HSC3587  Cryptantha torreyana H. E. Parks, J. P. Tracy 1934-6-27 11058 Humboldt Grouse Mtn. Comment
  UC1239654  Cryptantha torreyana Joseph P. Tracy 1921-5-30 5497 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  UC440174  Cryptogramma acrostichoides Joseph P. Tracy 1919-9-23 5290 Humboldt Trinity Summit; Northern Coast Ranges 1828 Comment
  MACF017398  Cupressus macrocarpa Trudy R. Ericson 1974-8-6 204 Humboldt Off U.S. 101, exit to Patrick's Beach State Park, near Seaward Drive. Comment
  UC562673  Cuscuta californica Joseph P. Tracy 1932-7-13 10496 Humboldt Corral Prairie Trinity Summit 1584 Comment
  UC1197868  Cuscuta occidentalis Joseph P. Tracy 1949-8-4 18409 Humboldt Mud Springs Trinity Summit 1341 Comment
  UC562482  Cuscuta subinclusa Joseph P. Tracy 1930-8-3 9151 Humboldt nw slope Buck Mountain; Northern Coast Ranges 762 Comment
  UCSB24349  Cuscuta subinclusa Tracy, Joseph 1924-7-20 Humboldt Brannan Mt.; on Willow Cr. Road 1005 Comment
  UC902067  Cuscuta suksdorfii Joseph P. Tracy 1949-8-4 18430 Humboldt near Box Camp; Trinity Summit 1524 Comment
  UC922013  Cynodon dactylon Joseph P. Tracy 1949-8-18 16427 Humboldt Eureka 15 Comment
  SEINET200581  Cynoglossum grande J. P. Tracy 1901-4-26 1047 Humboldt Humboldt Hill 0 Comment
  UC525558  Cynoglossum grande Joseph P. Tracy 1927-6-12 8154 Humboldt lower slopes Horse Mt.; Northern Coast Ranges, Horse Mt. 1219 Comment
  UC1100178  Cynosurus cristatus Malcolm A. Nobs and S. Galen Smith 1949-8-3 1195 Humboldt marsh and bog land at the southern outskirts Eureka Comment
  HSC44737  Cynosurus echinatus Maralyn O'Meara 1972-6-8 85 Humboldt Along Bald Hills Rd, 16.4 mi. E of junction with Hwy. 101 Comment
  UC1145091  Cynosurus echinatus Joseph P. Tracy 1947-6-8 17708 Humboldt 5 mi e Carlotta (by old Strong's District School House); e of Carlotta 60 Comment
  HSC37996  Cyperus eragrostis Peter Sorensen 1976-6-19 Humboldt Woodley Island Comment
  CAS-BOT-BC114369  Cyperus erythrorhizos Henry M. Pollard 1945-9-5 s.n. Humboldt Wilson Creek, Klamath River Canyon Comment
  HSC55124  Cystopteris fragilis G. L. Clifton, Griswold 1979-8-1 11924 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1692 Comment
  HSC14680  Cytisus multiflorus R. A. Magie 1964-5-3 56 Humboldt 2 mi. N of Trinidad on old Hwy. to Crescent City. Comment
  HSC14664  Cytisus scoparius var. andreanus W. F. Nickel 1965-5-17 Humboldt 1/4 mi. E of Arcata on road to Arcata Reservoir, near Jolly Giant Parking Lot. Comment
  HSC9540  Dactylis glomerata E. W. Styskel 1964-4-12 64 Humboldt Corner of Center Street and Hwy. 101 in Rio Dell. Comment
  RSA730951  Dactylis glomerata Gary D. Wallace 1979-6-22 1851 Humboldt Eureka. Parking lot, 6 Rivers National Forest headquarters. Comment
  SBBG34665  Dactylis glomerata T. L. Secrest 1948-6-29 Humboldt southern Humboldt County [no specific locality] Comment
  UC183570  Darmera peltata Joseph P. Tracy 1913-6-11 4093 Humboldt opposite Buck Mountain (Dinsmore's Ranch); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  UC1198471  Datisca glomerata Joseph P. Tracy 1912-8-3 3972 Humboldt in Valley of Van Duzen River (opposite Buck Mountain, Dinsmore's Ranch); Northern Coast Ranges, Dinsmore's Ranch 762 Comment
  JEPS12211  Datura stramonium W. L. Jepson 1932-7-28 16436 Humboldt Dyerville 88 Comment
  CHSC68776  Daucus pusillus Vernon Oswald 1997-6-5 8544 Humboldt North Spit of Humboldt Bay 3.7 mi south of Hwy. 255, Orvil Wilson Memorial Off- road Vehicle Park opposite the junction of New Navy Base Rd. and Loncoln Ave. 6 Comment
  HSC38897  Daucus pusillus J. P. Smith 1973-5-26 Humboldt Scotia Bluffs along the Eel River near Rio Dell Comment
  HSC46960  Daucus pusillus J. P. Smith, Thomas W. Nelson 1977-6-30 9200 Humboldt Samoa Peninsula just E of the drag strip 6 Comment
  UC420522  Daucus pusillus Joseph Burtt Davy and Walter C. Blasdale 1899-6-11 5417 Humboldt near Hubbards Comment
  CDA38308  Daucus pusillus T. C. Fuller 1958-6-17 1904 Humboldt Zanone Ranch, Cape Mendocino. 0 Comment
  HSC104060  Daucus pusillus M. F. Norman 2015-4-11 13 Humboldt Arcata, Ma-le'l Dunes Comment
  POM232322  Daucus pusillus I. L. Wiggins 1930-7-11 4678 Humboldt Near Samoa Comment
  UC154247  Daucus pusillus Joseph P. Tracy July, 1908 2795 Humboldt near Low Gap (ridge between Van Duzen and Mad Rivers, Humboldt & Trinity Co.'s); Northern Coast Ranges, Humboldt & Trinity Co.'s 914 Comment
  JEPS43413  Delphinium decorum subsp. decorum W. L. Jepson 1902-7-16 2050 Humboldt Trinity Summit, Horse Prairie Comment
  UC467717  Delphinium decorum subsp. tracyi Joseph Burtt Davy and Walter C. Blasdale 1899-6-21 5788 Humboldt Trinity Summit Comment
  HSC75491  Delphinium depauperatum J. O. Sawyer 1980-7-18 3632 Humboldt North Trinity Mountain Research Natural Area, north of Mill Creek Lake to Red Cap Hole. Comment
  CAS-BOT-BC10315  Delphinium hesperium Elizabeth Parsons Hawver 1915-6-1 s.n. Humboldt Carlotta Comment
  CAS-BOT-BC10138  Delphinium menziesii Mrs. H. C. Cantelow 1941-4-26 s.n. Humboldt 10.3 miles SW of Ferndale on road to Cape Mendocino Comment
  CAS-BOT-BC9953  Delphinium nudicaule Doris K. Kildale 1927-5-20 3164 Humboldt Bug Creek 792 Comment
  CAS-BOT-BC9959  Delphinium nudicaule Volney Rattan 1879-1-1 s.n. Humboldt Hoopa Valley Comment
  HSC67210  Delphinium nuttallianum Thomas W. Nelson, James Nelson 1980-6-10 5438 Humboldt Along E side of Red Mtn. 1372 Comment
  HSC70229  Delphinium nuttallianum M. A. Baker 1980-6-8 1897 Humboldt Near Buck Flat. 1554 Comment
  CAS-BOT-BC121975  Delphinium trolliifolium Mrs. G Earle Kelly 1924-6-1 s.n. Humboldt Kneeland Prairie Comment
  HSC74074  Delphinium trolliifolium Joyce Walker 1980-5-7 Humboldt Four Mile Creek Comment
  HSC99024  Delphinium trolliifolium Cara Witte 2008-7-16 909 Humboldt Board Camp Mountain. Forest Service Road 4N38. 1/2 mile south of intersection with National Forest 1. 1409 Comment
  UCD131743  Delphinium trolliifolium Collector unknown 2013-4-23 s.n. Humboldt Near Ferndale. 914 Comment
  UCR32113  Delphinium trolliifolium David J. Keil 1983-7-2 17344 Humboldt 21 miles south of SR 299 along Titlow Hill Rd., SW of Willow Creek 1300 Comment
  HSC9587  Deschampsia cespitosa D. J. McVean 1965-5-22 82 Humboldt Dike by Mad River Slough, just N of Somoa Blvd. Comment
  UC249800  Deschampsia cespitosa subsp. cespitosa Joseph P. Tracy 1923-6-19 6301 Humboldt Wilder Ridge near Kings Peak; Northern Coast Ranges, Wilder Ridge 762 Comment
  UC922026  Deschampsia cespitosa subsp. cespitosa Joseph P. Tracy 1942-6-15 17128 Humboldt near Redcrest resort Englewood 91 Comment
  HSC103072  Deschampsia elongata Sydney Carothers 2014-6-12 13 Humboldt Six Rivers National Forest, Lassics Botanical Area, Red Lassic. Near upper pond and rustic camp site. 1706 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
  HSC99038  Deschampsia elongata Cara Witte 2007-6-13 263 Humboldt Along Forest Service Road 5N04. Near spring by Grouse Mountain. 1583 Comment
  UC70915  Deschampsia elongata Joseph Burtt Davy and Walter C. Blasdale 1899-6-13 5516 B Humboldt near Camp Grant Camp Grant Comment
  UCD63577  Deschampsia elongata A. A. Beetle; G. L. Stebbins Jr. 1942-6-2 3621 Humboldt 4 miles north of Bridgeville. Comment
  CHSC7029  Dicentra formosa K. R. Stern 1964-6-17 2115 Humboldt Ca. 9 mi. w of Blue Lake, s side of US Hwy. #299. Comment
  HSC8356  Dicentra formosa Eugene Andreuccetti 1964-4-11 18 Humboldt 1/2 mi. S of Garberville on Hwy. 101 Comment
  HSC8365  Dicentra formosa Francis Winter 1960-4-23 Humboldt 4 mi. N of Dollar Ranch, on Korbel-Maple Creek Rd. 244 Comment
  CAS-BOT-BC402403  Dicentra formosa subsp. formosa L. R. Abrams 1918-6-12 7084 Humboldt Cottage Nurseries, Eureka Comment
  JEPS91306  Dicentra formosa subsp. formosa Dean W. Taylor 1971-5-2 1065 Humboldt Comment
  RSA10045  Dichanthelium acuminatum var. fasciculatum Joseph P. Tracy 1931-5-17 9427 Humboldt Trinity River Valley, at Willow Creek 152 Comment
  JEPS5677  Dichelostemma X venustum Milo S. Baker 138 a Humboldt South Fork of Yager Creek Comment
  UC1005674  Dichelostemma capitatum Frank W. Gould 1939-5-30 838 Humboldt about 25 mi due e Eureka (near top of Horse Mountain); Horse Mountain 1100 Comment
  UC666885  Dichelostemma capitatum Joseph P. Tracy 1927-5-8 7966 Humboldt Phillipsville 121 Comment
  HSC98708  Dichelostemma ida-maia Cara Witte 2007-6-14 274 Humboldt Along National Forest 1. Near Kinsey Ridge. 2 miles north of intersection with 4N06. 1319 Comment
  SBBG892  Dichelostemma ida-maia K. K. Muller 1954-6-21 628 Humboldt Mad River Camp 2 on Mad River Comment
  UC1198183  Dichelostemma ida-maia Joseph P. Tracy 1927-8-14 8329 Humboldt Big Lagoon 152 Comment
  CAS-BOT-BC501029  Dichelostemma ida-maia Peter H. Raven; R. Snow 1958-7-20 13638 Humboldt 2.0 miles south of junction of Friday Ridge Road on Titlow Hill Road, near Grouse Mountain Comment
  HSC31223  Dichelostemma multiflorum D. E. Anderson 1972-6-20 5724 Humboldt Along the Redwood Valley-Hoopa Rd., E of the summit. Comment
  JEPS15182  Digitalis purpurea G. T. Nordstrom Jul 1937 1442 Humboldt 1.6 mi wsw Orick; Orick Quad. 45 Comment
  RSA54137  Digitaria sanguinalis Henry M. Pollard 1944-9-7 s.n. Humboldt Near Orleans. Comment
  CAS-BOT-BC153237  Diplacus kelloggii S. K. Harris; J. P. Tracy; H. S. Yates 1936-6-17 3406 Humboldt Burr Valley, on Buck Mountain 1036 Comment
  POM277211  Disporum hookeri var. hookeri Lyman Benson 1929-7-16 1840 Humboldt Weott Ranger Station. S Fork Eel River. Comment
  HSC26357  Distichlis spicata T. O. Osborne 1970-6-18 55 Humboldt Green Rock, 1-5/8 mi. N, 3/4 mi. W of Trinidad Lighthouse. Comment
  UCD64191  Distichlis spicata G. Douglas Barbe; T. C. Fuller 1974-6-17 1835 Humboldt Lower Pacific Drive, S of sewage plant, W of golf course, at Sail Court, Shelter Cove. 60 Comment
  HSC17907  Dodecatheon alpinum W. K. Parks Jul 1933 1374 Humboldt S Fork Mtn. Comment
  JEPS48585  Dodecatheon alpinum Hilda W. Grinnell 1932-7-12 12 Humboldt meadow below McKay Camp (So Fork Mt.); , below McKay Camp Comment
  RSA183606  Dodecatheon hendersonii G. Bos 1965-5-15 278 Humboldt Berry Summit near U.S. 299. Growing in moss at base of Quercus. 793 Comment
  RSA0011675  Drosera rotundifolia Norman Dennis 1965-6-30 140 Humboldt Big Lagoon County Park, southwest corner of Big Lagoon. Comment
  SEINET13728350  Drosera rotundifolia Unknown 1914-9-6 4601 Humboldt Plants of Northern Coast Ranges of California Bald Mountain, between High Prairie and Snow Camp, Humboldt County Comment
  UC183551  Drymocallis Joseph P. Tracy 1913-6-14 4137 Humboldt opposite Buck Mountain (Dinsmore's Ranch); Northern Coast Ranges, valley of Van Duzen River, Dinsmore's 762 Comment
  HSC35347  Drymocallis glabrata A. M. Montalvo, J. D. Ackerman 1975-6-22 480 Humboldt 6.4 mi. W of Dinsmore on Hwy. 36 Comment
  CAS-BOT-BC159613  Drymocallis glandulosa var. glandulosa Doris K. Kildale 1929-5-26 9136 Humboldt Klamath River at Orleans 152 Comment
  UC1198693  Drymocallis glandulosa var. glandulosa H. E. Parks and Joseph P. Tracy 1931-5-17 10085 Humboldt Trinity River at Willow Creek; Northern Coast Ranges, Trinity River at Willow Creek 152 Comment
  UC154498  Drymocallis glandulosa var. wrangelliana Mrs. M. H. Manning 1900-1 Humboldt Hoopa Comment
  JEPS47204  Drymocallis rhomboidea Joseph P. Tracy 1927-5-14 8002 Humboldt near South Fork Trinity River (Trinity River Valley); Northern Coast Ranges, Trinity River Valley 182 Comment
  JEPS35200  Dryopteris arguta W. L. Jepson 1932-8-9 16542 Humboldt Deerfoot Glade Bull Creek 121 Comment
  JEPS70196  Dryopteris arguta Robert J. Rodin 1969-8-16 8368 Humboldt near Carlotta (near Van Duzen River) Comment
  UCD136407  Dryopteris arguta K. Esau 1934-5-8 s.n. Humboldt Above Fort Seward. 457 Comment
  SEINET6424490 Image available Dryopteris dilatata Hicks, Carpenter 1977-7-12 Humboldt Prairie Creek State Park Comment
  CAS-BOT-BC428297  Dudleya farinosa Doris K. Kildale 1927-6-25 3544 Humboldt Shelter Cove. Comment
  RSA365462  Eleocharis acicularis var. acicularis Thomas W. Nelson, Jane P. Nelson 1977-6-19 3508 Humboldt Lassics: Pond above Alder Springs 1585 Comment
  UC666918  Eleocharis macrostachya Joseph P. Tracy 1934-7-20 13464 Humboldt Big Lagoon, small farm on shore 3 Comment
  CAS-BOT-BC113110  Eleocharis obtusa LeRoy Abrams 1918-6-16 7158 Humboldt Willow creek. Comment
  POM273092  Eleocharis obtusa Henry M. Pollard 1946-8-22 s.n. Humboldt Ullathorne Riffle, Klamath River, Orleans Region Comment
  POM313063  Eleocharis pachycarpa Malcolm A. Nobs, S. Galen Smith 1949-8-11 1346 Humboldt Marshes on eastern side of Big Lagoon Comment
  RSA246901  Eleocharis pachycarpa Robert F. Thorne, Percy C. Everett 1965-8-7 35190 Humboldt Big Lagoon. In bog at S end of lagoon. 2 Comment
  UCSB34194  Eleocharis parvula Kearns, Dennis 1979-8-24 Humboldt Near the Arcata Boat Launching Facility at the South end of "I" Street Comment
  HSC62979  Elodea canadensis David Wheeler 1979-5-16 113 Humboldt Humboldt State University Campus, stream just below Fern Lake, E of the handball courts. Comment
  UC1137130  Elymus X macounii August L. Hormay 1932-5-12 Humboldt Bull Creek Road; near bridge Comment
  UC175632  Elymus elymoides subsp. elymoides Joseph P. Tracy 1912-7-31 3933 Humboldt Buck Mountain Northern Coast Ranges (summit) 1676 Comment
  HSC58637  Elymus elymoides var. elymoides G. L. Clifton, Griswold 1979-7-31 11573 Humboldt Near Trinity Summit Guard Station, close to Hoopa 1884 Comment
  HSC1804  Elymus glaucus William J. Ferlatte, B. D. Rogers 1966-6-15 2107 Humboldt Larabee Valley 762 Comment
  HSC65112  Elymus glaucus J. P. Smith, Steve Selva 1970-6-14 3847 Humboldt Along Hwy. 96 at Whitmore Creek 152 Comment
  RSA129277  Elymus glaucus Joseph P. Tracy 1935-7-21 14119 Humboldt mouth of Bremer Creek; Trinity River Valley, at Willow Creek 152 Comment
  UC187094  Elymus glaucus J. P. Tracy 1902-7-4 1760 Humboldt Immediate vicinity of Eureka 0 Comment
  UC526797  Elymus glaucus Joseph P. Tracy 1925-7-5 7167 Humboldt High Prairie Northern Coast Ranges, Bald Mountain 1066 Comment
  UC589939  Elymus glaucus H. S. Yates 1936-6-17 5695 Humboldt Buck Mountain South Fork Pk. Quadrangle (lower nw slope) 792 Comment
  UC1103130  Elymus multisetus Joseph P. Tracy 1926-6-20 7743 Humboldt Horse Mountain Northern Coast Ranges 1524 Comment
  SD38379  Epilobium angustifolium Edith A. Purer 1932-7-27 4148 Humboldt Comment
  CDA21306  Epilobium angustifolium subsp. circumvagum D. Kratville 2007-7-1 PDR 1426134 Humboldt North Coast; Stone Lagoon State Park, Hwy 101, Orick. 0 Comment
  RSA647553  Epilobium angustifolium subsp. circumvagum G. F. Orr 1953-8-15 s.n. Humboldt Patrick Point State Park, Trinidad Comment
  HSC35708  Epilobium brachycarpum Thomas W. Nelson, B. Reinhardt 1975-7-30 2117 Humboldt E of Pilot Rock Comment
  UC505123  Epilobium campestre Joseph P. Tracy 1930-6-15 8743 Humboldt near Bosworth; Larrabee Creek 457 Comment
  CAS-BOT-BC166892  Epilobium canum subsp. latifolium Doris K. Kildale 1925-9-10 1110 Humboldt Bug Creek 792 Comment
  RSA275298  Epilobium canum subsp. latifolium Thomas W. Nelson 1977-8-6 3722 Humboldt Lassics: serpentine ridge between Blanket Creek and Bear Creek just below Blanket Rock. Unsurveyed section east of T2S, R5E, Sec. 25 1494 Comment
  HSC54703  Epilobium ciliatum Overton, Butler 1979-7-26 10026 Humboldt Near White Rock Spring, close to the town of Willow Creek 1554 Comment
  POM225267  Epilobium ciliatum subsp. ciliatum P. A. Munz 1936-8-9 14330 Humboldt South fork of Eel River, 5 miles north of Humboldt-Mendocino County line, on Redwood Highway Comment
  UC902177  Epilobium ciliatum subsp. glandulosum Joseph P. Tracy 1947-7-5 17810 Humboldt near Box Camp (along stream); Trinity Summit 1463 Comment
  HSC49655  Epilobium ciliatum subsp. watsonii J. P. Smith 1971-10-6 4953 Humboldt End of Murray Rd. in McKinleyville. Comment
  HSC41820  Epilobium densiflorum Thomas W. Nelson, Jane P. Nelson 1977-8-6 3699 Humboldt Along old trail above Alder Springs 1616 Comment
  UC505116  Epilobium foliosum Joseph P. Tracy 1930-6-21 8786 Humboldt Larrabee Valley Northern Coast Ranges 701 Comment
  HSC55123  Epilobium glaberrimum subsp. fastigiatum G. L. Clifton, Terry Griswold 1979-8-1 11923 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1692 Comment
  UC1197008  Epilobium hallianum Joseph P. Tracy 1935-7-27 14300 Humboldt McKay Prairie Trinity Summit 1584 Comment
  RSA181876  Epilobium hallianum Joseph P. Tracy 1930-7-16 8977 Humboldt Northern Coast Ranges: South Fork Mountain; in wet meadow at McKay Camp 1677 Comment
  UC505113  Epilobium hallianum Joseph P. Tracy 1927-7-17 8274 Humboldt Three Cabins Northern Coast Ranges, Chaparral Mountain (lower w foothills of mt., borders of pond) 457 Comment
  UC505114  Epilobium hallianum Joseph P. Tracy 1932-7-14 10533 Humboldt Corral Prairie Klamath Mountains, Trinity Summit (meadow) 1524 Comment
  HSC39234  Epilobium minutum D. E. Anderson, J. P. Smith 1971-7-6 - 1273 Humboldt Horse Mtn. Comment
  UC1198480  Epilobium minutum Joseph P. Tracy 1927-6-12 8164 Humboldt Horse Mountain Northern Coast Ranges (lower slopes) 1066 Comment
  CAS-BOT-BC165948  Epilobium septentrionale J. Clausen 1932-9-18 684 Humboldt 2 miles southeast of Petrolia at the bridge across Matolle River Comment
  HSC16556  Epilobium septentrionale C. B. Wolf 1927-8-30 1235 Humboldt 2 mi. S of Petrolia on the Matole River near the road crossing the river Comment
  JEPS31520  Epilobium septentrionale Joseph P. Tracy 1933-9-9 13075 Humboldt vicinity of Garberville (along S. Fork Eel R.); S. Fork Eel R. 121 Comment
  HSC16604  Epipactis gigantea D. E. Anderson 1967-7-10 4368 Humboldt Mad river canyon, 3 mi. S of Blue Lake Comment
  UC429313  Epipactis gigantea P. E. Goddard 1907-7-15 #b 125 Humboldt Van Duzen Mad River (sunny side of river) Comment
  CAS-BOT-BC58003  Equisetum Doris K. Kildale 1925-8-18 1253 Humboldt McKay's Prarie - Trinity Summit. 1524 Comment
  UC549763  Equisetum hyemale subsp. affine Joseph P. Tracy 1933-6-6 12506 Humboldt Trinidad; Northern Coast Region 60 Comment
  HSC22867  Equisetum laevigatum D. E. Anderson 1965-6-10 3792 Humboldt Along NW Pacific railroad tracks in Eureka, in harbor area and adjacent sites 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
  HSC881  Equisetum telmateia subsp. braunii C. B. Wolf 1927-8-28 1181 Humboldt On rd. between Eureka and Arcata Comment
  CAS-BOT-BC291178  Erechtites glomeratus L. R. Abrams 1916-7-18 6108 Humboldt Arcata to Trinidad, 18 mi along coast Comment
  HSC91918  Erechtites minimus E. Mackey 1986-7-21 Humboldt Patricks Point State Park, near Wedding Rock Comment
  UC1198999  Eremocarpus setiger Joseph P. Tracy 1911-7-8 3452 Humboldt near mouth of Willow Creek; Northern Coast Ranges, Valley of Trinity River 152 Comment
  CAS-BOT-BC58927  Erica Wilma Follette 2002-2-9 s.n. Humboldt Along east side of Highway 101, near Patrick's Point State Park Comment
  CAS-BOT-BC293486  Erigeron aliceae L. B. Kildale 1930-8-10 10529 Humboldt Snow Camp, head of Redwood Creek Comment
  UC1223013  Erigeron aliceae Joseph P. Tracy 1949-8-11 18487 Humboldt 1.5 mi se of Snow Camp (along creek running through fir woods near the C. M. Preston place) 1463 Comment
  RSA168815  Erigeron annuus Joseph P. Tracy 1949-10-9 18585 Humboldt My garden at Eureka Comment
  UC672190  Erigeron biolettii Frank W. Peirson 1923-7-9 3877 Humboldt Humboldt County State Park Eel River, Humboldt County State Park Comment
  HSC75411  Erigeron foliosus var. confinis J. O. Sawyer, M. A. Ericksen 1980-7-7 3573 Humboldt Slopes along Aikens Creek, Adroni Research Area 457 Comment
  RSA167385  Erigeron foliosus var. mendocinus Joseph P. Tracy 1951-7-24 19625 Humboldt Blue Slide, on Van Duzen River 91 Comment
  JEPS94286  Erigeron glaucus Vernon Oswald and Lowell Ahart 1997-9-4 8851 Humboldt 1.1 mi s of Highway 255 (North Spit of Humboldt Bay, w side of New Navy Base Road); North Spit of Humboldt Bay, New Navy Base Road 6 Comment
  CAS-BOT-BC308848  Erigeron glaucus Doris K. Kildale 1926-5-15 1975 Humboldt Fleener Creek Comment
  POM357512  Erigeron glaucus J. P. Smith, T. W. Nelson 1977-6-30 9208 Humboldt Samoa Peninsula just east of the drag strip. Comment
  UC1557909  Erigeron glaucus J. Semple and S. Heard 1986-8-17 8501 Humboldt off US 101 just s Little River State Beach; Clam Beach County Park Comment
  HSC97452  Erigeron klamathensis Cara Witte 2007-6-7 219 Humboldt Along National Forest 1 on Kinsey Ridge. Approximately 2 miles southeast of intersection with 5N04. Near cattleguard. 1371 Comment
  CAS-BOT-BC214577  Erigeron philadelphicus Alice Eastwood 1907-4-20 30 Humboldt Trinidad, near Light-house Comment
  CDA4936  Erigeron philadelphicus Keith Miller, T. R. Haig 1960-6-13 4552 Humboldt 4 miles southeast of Carlotta 0 Comment
  UCSB15926  Erigeron philadelphicus Breedlove, Dennis 1962-6-8 Humboldt On U.S. Highway 101, 3 miles south of Orick Comment
  UC175188  Erigeron philadelphicus var. philadelphicus Joseph P. Tracy 1913-6-19 4212 Humboldt opposite, Dinsmore's Ranch Buck Mountain; Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  UCD131462  Erigeron philadelphicus var. philadelphicus K. Esau 1935-5-22 s.n. Humboldt Fort Seward. Comment
  JEPS25617  Erigeron philadelphicus var. philadelphicus Rimo Bacigalupi 1959-7-7 7250 Humboldt immediately behind bluff headland (just n of road summit at this point); Cape Mendocino 30 Comment
  SEINET11851213  Erigeron strigosus J. P. Tracy 1950-1 19046 Humboldt Trinity River, E side, 1 mi N of mouth of Willow Creek Comment
  UC1118185  Erigeron strigosus var. strigosus H. L. Person 1932-8-28 Humboldt e Mad River bridge; Eureka Quadrangle, Korbel Comment
  HSC48395  Eriodictyon californicum Brad Klipfel 1973-6-10 149 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC70691  Eriodictyon californicum Gail Newton 1980-7-15 1566 Humboldt Near Sims Mtn. 1311 Comment
  HSC35695  Eriogonum compositum var. compositum Thomas W. Nelson, B. Reinhardt 1975-7-30 2102 Humboldt Beside road out Whiting Ridge Comment
  SEINET3386405 Image available Eriogonum latifolium Bassett Maguire, Ruth Maguire; C. B. Maguire 1934-6-9 15112 Humboldt On sand dunes, Clam Beach, 15 miles N of Eureka Comment
  JEPS57407  Eriogonum luteolum L. R. Heckard with T. I. Chuang 1968-7-5 1987 Humboldt 4.3 mi n, on Mail Ridge road Harris road Comment
  HSC54511  Eriogonum nudum Overton, Butler 1979-7-23 9417 Humboldt Near Horse Mtn., close to the town of Willow Creek 1478 Comment
  HSC98531  Eriogonum nudum var. nudum Cara Witte 2007-7-8 445 Humboldt Board Camp Mountain. Trail 4E28. 1496 Comment
  UC672903  Eriogonum nudum var. nudum Joseph P. Tracy 1933-8-6 12951 Humboldt French Camp Ridge 1066 Comment
  UC672904  Eriogonum nudum var. nudum Joseph P. Tracy 1932-7-20 10728 Humboldt open places at Corral Prairie Trinity Summit, Corral Prairie 1584 Comment
  UC176685  Eriogonum nudum var. oblongifolium Joseph P. Tracy 1912-7-21 3761 Humboldt Alton Norther Coast Ranges, Alton 30 Comment
  BLMAR664  Eriogonum nudum var. oblongifolium Jennifer Wheeler 2012-7-10 664 Humboldt King range, Trail to Mackey allotment, along gravely dry slopes 609 Comment
  CAS-BOT-BC269864  Eriogonum nudum var. pubiflorum V. Rattan 1882-6-1 s.n. Humboldt Unspecified Comment
  UC54703  Eriogonum nudum var. pubiflorum Harley P. Chandler June, 1901 1468 Humboldt Klamath River North Coast Ranges, Klamath River 365 Comment
  UC14096  Eriogonum roseum Chesnut and Drew 1888-7-25 Humboldt Hy-Am-Pum Comment
  UC1225801  Eriogonum umbellatum var. argus Joseph P. Tracy 1947-7-5 17781 Humboldt ridge top 1 mi w Mud Springs; Trinity Summit 1158 Comment
  UC55394  Eriogonum umbellatum var. dumosum P. E. Goddard 1901-7-10 55 Humboldt Hupa Comment
  HSC98668  Eriogonum umbellatum var. nelsoniorum Cara Witte 2008-7-14 888 Humboldt Horse Mountain Botanical Area. Forest Service Road 6N18. 1431 Comment
  HSC55116  Eriogonum umbellatum var. stellatum Gilbert Muth 1979-8-1 11885 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1877 Comment
  HSC55126  Eriogonum umbellatum var. stellatum G. L. Clifton, Griswold 1979-8-1 11930 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1692 Comment
  JEPS56129  Eriogonum vimineum W. L. Jepson 1932-7-25 16395 Humboldt Old Camp Grant Eel River, Old Camp Grant Comment
  HSC73142  Eriophyllum lanatum M. A. Baker 1980-5-18 1332 Humboldt Near Black Mtn. 792 Comment
  UC90307  Eriophyllum lanatum var. achilleoides W. W. Price 1890-7-1 Humboldt Mad River Comment
  HSC97466  Eriophyllum lanatum var. achilleoides Cara Witte 2007-5-29 129 Humboldt White Oak Opening. Along Kinsey Ridge. 1238 Comment
  JEPS17991  Eriophyllum lanatum var. achilleoides George B. Rossbach 1955-6-10 533 Humboldt 2 mi no of Stephens Redwood Grove (Route 101 along s fork of Eel River, in redwood forest area); South fork of Eel River Comment
  UC129580  Eriophyllum lanatum var. grandiflorum Mrs. M. H. Manning 1901-6-7 Humboldt near Hupa Comment
  POM265904  Eriophyllum lanatum var. lanceolatum R. C. Rollins, Lincoln Constance 1942-5-12 2890 Humboldt Klamath River 12 miles north of Weitchpee 122 Comment
  UC1718077  Eriophyllum lanatum var. lanceolatum John S. Mooring 1970-7-7 2497 Humboldt along and near hwy 96, 0.5 miles N of confluence of Slate Creek and Klamath River Comment
  CAS-BOT-BC301923  Eriophyllum staechadifolium W. R. Dudley 1899-6-1 s.n. Humboldt Eureka Penninsula [Peninsula] Comment
  RSA846  Eriophyllum staechadifolium E. R. Johnson 1928-8-25 1144 Humboldt Eureka Comment
  UCR39816  Erodium botrys L. P. Janeway 1984-5-13 771 Humboldt Kneeland/Bridgefield Road c. 5 mi. east of the Kneeland Post Office 762 Comment
  HSC37916  Erodium cicutarium Peter Sorensen 1976-5-15 Humboldt Woodley Island Comment
  SEINET13944098 Image available Eryngium aristulatum Joseph P. Tracy 1912-1 3777 & 4001 Humboldt Alton, Altitude ca 100 to 300 ft 91 Comment
  POM48069  Eryngium aristulatum var. aristulatum J. B. Feudge 1923-7-27 55 Humboldt Rohnerville 15 Comment
  HSC74289  Erysimum capitatum var. capitatum M. A. Baker 1980-7-19 3013 Humboldt Near Bret Hole. 1814 Comment
  HSC34457  Erysimum menziesii J. P. Smith, J. O. Sawyer 1975-5-11 8079 Humboldt Samoa Peninsula, just N of The Coast Guard Station boundary. Comment
  UC1199176  Erysimum menziesii Joseph P. Tracy 1901-4-14 1019 Humboldt sand dunes of ocean beach Northern Coast Region, Humboldt Bay Comment
  HSC98625  Erythronium californicum Cara Witte 2007-5-26 659 Humboldt National Forest 1. 1/2 mile south of intersection with Forest Service Roads 6N38 and 6N36. 1458 Comment
  UC666965  Erythronium grandiflorum Joseph P. Tracy 1933-7-16 12774 Humboldt openings in forest near McKay Camp; South Fork Mountain 1676 Comment
  HSC48399  Erythronium grandiflorum subsp. grandiflorum Brad Klipfel 1973-6-10 86 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC15500  Erythronium oregonum subsp. leucandrum D. E. Anderson 1963-3-23 2400 Humboldt 2 mi. N of Beaver School Comment
  CAS-BOT-BC403034  Eschscholzia californica Carl D. Duncan 1920-9-22 s.n. Humboldt Hoopa Valley Comment
  HSC97951  Eschscholzia californica Cara Witte 2007-6-21 317 Humboldt National Forest 1. Two miles south of intersection with 5N04. 1472 Comment
  UCD170582  Eschscholzia californica subsp. californica Gordon Leppig 1998-5-8 744 Humboldt Arcata, empty lot corner of Sunset and Jay St. 24 Comment
  HSC69578  Eucalyptus globulus R. Kalal 1980-6-1 7 Humboldt City of Arcata, along F street between 12th and 13th streets. 37 Comment
  HSC103834  Eucephalus tomentellus Haggard 2000-8-22 71957 Humboldt Along US Forest Service Rd. 1, southeast of Blue Lake Comment
  UC1222991 Image available Eucephalus tomentellus Joseph P. Tracy 1941-8-24 17043 Humboldt near McKay Camp; South Fork Mountain 1676 Comment
  UC1223114  Euchiton gymnocephalus Joseph P. Tracy 1946-6-23 17596 Humboldt se end Kneeland (Dan McBride's place); Kneeland Prairie 762 Comment
  UC449999  Euchiton sphaericus Joseph P. Tracy 1918-9-1 5097 Humboldt on old Kneeland Prairie road Newells Camp (around Humboldt Bay); Northern Coast Ranges, Humboldt Bay 457 Comment
  CAS-BOT-BC310493  Euchiton sphaericus Joseph P. Tracy 1936-8-24 15176 Humboldt Fickle Hill. (6 mi. S.E. of Arcata) 609 Comment
  JEPS51869  Euphorbia crenulata Harley P. Chandler Jun 1901 1457 Humboldt Bluff Creek; North Coast Ranges, Klamath River 304 Comment
  JEPS52406  Euphorbia peplus Joseph P. Tracy 1926-5-15 7473 Humboldt Eureka; Northern Coast Ranges 0 Comment
  HSC36485  Eurybia radulina Thomas W. Nelson, James Nelson 1975-9-3 2195 Humboldt Above junction of Maple Creek-Kneeland Rd. Comment
  UC1607839  Festuca Joseph P. Tracy and Harold E. Parks 1934-6-27 11078 Humboldt Grouse Mountain 1432 Comment
  HSC9818  Festuca arundinacea D. J. McVean 1965-5-18 76 Humboldt Along Old Arcata Rd. just S of intersection with Indianola Rd. Comment
  UC180429  Festuca californica Joseph P. Tracy 1913-6-21 4250 Humboldt opposite Buck Mountain (Dinsmore's Ranch); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  CAS-BOT-BC278304  Festuca californica subsp. californica L. R. Abrams 1918-6-15 7126 Humboldt Brannan Mt near Willow Creek 1371 Comment
  UCD65873  Festuca californica subsp. californica R. Tofsrud 1947-7-1 203 Humboldt Between Alder Point and Zinea. Comment
  RSA121321  Festuca elmeri H. S. Yates 1936-6-17 5690 Humboldt Lower N.W. slope of Buck Mountain 793 Comment
  HSC70903  Festuca idahoensis R. York 1980-5-18 599 Humboldt Near Black Mtn. 792 Comment
  HSC31224  Festuca occidentalis D. E. Anderson 1972-6-20 5723 Humboldt Along the Redwood Valley-Hoopa Rd., E of the summit. Comment
  RSA10112  Festuca occidentalis Joseph P. Tracy 1932-7-17 10655 Humboldt Near Corral Prairie, Trinity summit, Klamath mountains. 1524 Comment
  UC70924  Festuca occidentalis Joseph Burtt Davy and Walter C. Blasdale 1899-6-11 5427 Humboldt near Hubbards Comment
  HSC37914  Festuca rubra Peter Sorensen 1976-7-14 Humboldt Humboldt Bay, Woodley Island Comment
  UC1132004  Festuca rubra H. L. Person 1932-5-11 Humboldt near Arcata; Eureka Quad. 0 Comment
  UC247503  Festuca rubra A. S. Hitchcock 1915-7-13 469 Humboldt back of Humboldt Bay; Eureka Comment
  UC526868  Festuca rubra Joseph P. Tracy 1927-6-26 8217 Humboldt Stone Lagoon Northern Coast Region 6 Comment
  UCD66357  Festuca rubra R. Tofsrud 1948-9-1 Humboldt Road junction near summit of Horse Mt. 1463 Comment
  UCD66378  Festuca rubra J. B. Davy; W. C. Blasdale 1899-6-19 5676 Humboldt Hoopa Mountain. Comment
  UCD66389  Festuca rubra Thomas Nelson; Jane Nelson 1976-7-26 3024 Humboldt Trinity - Humboldt County line: Road 1S07 west of Black Lassic. 1615 Comment
  HSC81922  Festuca subulata Thomas W. Nelson, Jane P. Nelson 1979-7-3 4964 Humboldt Along road to Joe Losey property at junction of Kneeland and Maple Creek Rds. 610 Comment
  SEINET3827552 Image available Festuca subuliflora T. R. Van Devender, R. K. Van Devender 1990-1 90 -102 Humboldt Cal-Barrel Road in Redwood National Forest; dense old-growth redwood forest. Comment
  HSC21492  Foeniculum vulgare Wm. F. Bowman 1968-11-9 Humboldt Along E edge of Humboldt Bay, along elevated area near railroad tracks. Comment
  HSC89431  Fragaria X ananassa P. A. Daly 1984-5-8 8 Humboldt Trinidad Head. 61 Comment
  HSC36627  Fragaria vesca A. M. Montalvo, J. D. Ackerman 1973-4-29 78 Humboldt 2 mi. NE of Kneeland on rd. to Maple Creek 457 Comment
  HSC44279  Fragaria vesca D. L. Goforth 1977-4-23 4 Humboldt 2.5 mi.. S of Shelter Cove Rd. S Fork of Bear Creek at Wailaki Campground 561 Comment
  HSC99023  Fragaria vesca Cara Witte 2008-7-14 899 Humboldt White Oak Opening. Along Kinsey Ridge. 1257 Comment
  CAS-BOT-BC457923  Fragaria vesca subsp. californica Doris K. Kildale 1926-3-23 1613 Humboldt Alton Hill Comment
  CAS-BOT-BC53401  Frangula californica subsp. occidentalis Doris K. Kildale 1928-10-7 6748 Humboldt Willow Creek Canyon, 7 mi. west of Trinity Comment
  HSC18410  Frangula purshiana Francis Winter 1960-5-6 Humboldt Across from Azalea State Park Entrance Comment
  HSC39183  Fraxinus latifolia D. E. Anderson, J. P. Smith 1971-6-28 1217 Humboldt Along Mad River, 2 mi. S of Blue Lake. Comment
  UC1173690  Fraxinus latifolia Joseph P. Tracy 1939-5-6 16279 Humboldt opposite mouth of Willow Creek; Trinity River Valley, Lack Pond 152 Comment
  SEINET6694697 Image available Fraxinus oregona Joseph P. Tracy 1941-1 16814 Humboldt Lack pond; in Trinity River Valley, opposite mouth of Willow Creek Comment
  CAS-BOT-BC136030  Fritillaria affinis Doris K. Kildale 1925-4-1 s.n. Humboldt Hungry Hollow near Korbell Comment
  SDSU19198  Fritillaria affinis Michael G. Simpson, Michael Mesler and Michael Mayer 2008-5-27 3008 Humboldt Six Rivers National Forest. From Hwy 299, take Titlow Hill Road (at Berry Summit) ca. 7.5 miles south, west 0.2 miles to Cold Spring. Ca. 0.2 mile south-southeast of Cold Spring. Ca. 3.3 aerial miles south-southeast of Horse Mtn. Radio Tower. 1416 Comment
  UC429292  Fritillaria affinis Mrs. M. H. Manning 1901-1 9 Humboldt near Hupa Comment
  HSC22059  Fritillaria affinis Joel W. Reinhard 1966-5-6 31 Humboldt Two beaches N of College Cove Comment
  UC175294  Fritillaria recurva Joseph P. Tracy 1913-6-17 4176 Humboldt Buck Mountain, near the summit Buck Mountain; Northern Coast Ranges, Buck Mountain 1676 Comment
  SEINET4208042  Fumaria capreolata Richard R. Halse 2013-3-28 8767 Humboldt Eureka. By a Texaco station near 3543 Broadway St. (U.S. Hwy. 101); 0 6 Comment
  JEPS52710  Galium ambiguum subsp. ambiguum Lauramay T. Dempster and G. L. Stebbins Jr. 1963-7-9 3854 Humboldt along Hwy 36 about 1 mi w Mad River crossing (n-facing slope); Low Gap Sunday School 792 Comment
  CHSC19947  Galium aparine M. S. Taylor 1975-3-25 427 Humboldt Between 11th and 12th Sts, at end of Citrus Ave, Chico. Comment
  POM148009  Galium aparine J. B. Feudge 1923-7-29 727 Humboldt Rohnerville. 15 Comment
  UC594156  Galium aparine S. K. Harris, J. P. Tracy, and H. S. Yates 1936-6-17 3427 Humboldt nw slopes Buck Mountain 822 Comment
  HSC70654  Galium bolanderi Gail Newton 1980-7-14 1530 Humboldt Near Deadman Ridge 1097 Comment
  HSC71791  Galium bolanderi Gail Newton 1980-6-16 179 Humboldt Near Monks Camp. 1097 Comment
  UC169072  Galium boreale subsp. septentrionale Joseph Burtt Davy and Walter C. Blasdale Jun 21 1899-Jun 23 1899 5883 Humboldt Trinity Summit North Coast Ranges Comment
  RSA245002  Galium nuttallii William J. Ferlatte, B. D. Rogers 1966-6-15 2092 Humboldt Near Bridgeville. Comment
  UC602541  Galium parisiense Joseph P. Tracy 1913-6-10 4083 Humboldt below Bridgeville (on river); Northern Coast Ranges, Van Duzen River, Rogers Ranch 152 Comment
  HSC57320  Galium triflorum Overton, Butler 1979-7-23 9519 Humboldt Near Titlow Hill, close to the town of Willow Creek. 1280 Comment
  RSA41964  Galium triflorum Ella Dales Cantelow 1936-5-17 1407 Humboldt 3 miles S of Orick Comment
  UC416651  Galium triflorum Mrs. M. H. Manning 1900-1 Humboldt near Hupa Comment
  HSC41593  Galium triflorum Thomas W. Nelson, Jane P. Nelson 1977-7-4 3597 Humboldt N of pond above Alder Springs Comment
  HSC41594  Galium triflorum Thomas W. Nelson, Jane P. Nelson 1977-7-1 3554 Humboldt 1494 Comment
  UC204756  Gamochaeta ustulata Joseph P. Tracy 1918-7-5 5028 Humboldt White Thorn Valley Northern Coast Ranges, White Thorn Valley 304 Comment
  CAS-BOT-BC303388  Gamochaeta ustulata Joseph P. Tracy 1936-8-1 15057 Humboldt Canyon Creek, 6 miles SE of Blue Lake 365 Comment
  UC562620  Gamochaeta ustulata Joseph P. Tracy 1936-5-30 14834 Humboldt sand dunes near Samoa; Northern Coast Region, Humboldt Bay 6 Comment
  CAS-BOT-BC188540  Garrya elliptica Alice Eastwood 1907-4-21 18 Humboldt Port Trinidad Comment
  HSC40406  Garrya elliptica Linda M. Barker 1976-3-22 1339 Humboldt 3 mi. W of Arcata Comment
  HSC49918  Garrya elliptica Maralyn O'Meara 1973-2-19 191 Humboldt McKinleyville, Murray Rd. Comment
  HSC8390  Garrya elliptica C. O. Baker 1962-3-22 3 Humboldt 2 mi. S of Trinidad along old Hwy. 101 122 Comment
  HSC90216  Garrya elliptica Louise Watson, Jan Meninga Feb 1991 4 Humboldt Mad Rive Slough and Dunes, Cooperative Management area, 1/3mi from parking lot W of trail Comment
  POM224222  Garrya elliptica H. E. Parks 1933-02 4287 Humboldt Trinidad Comment
  UC1196886  Garrya elliptica Joseph P. Tracy 1921-1-23 5413 Humboldt near Lindsay Creek (hillside on Mad River); Northern Coast Region 30 Comment
  HSC39551  Garrya fremontii Thomas W. Nelson 1976-6-10 2703 Humboldt Along ridge S of E peak of Lassic Peak 1646 Comment
  UCSB72514  Garrya fremontii Moseley, Maynard 1952-8-21 Humboldt Along western valley wall of Willow Creek, mostly within Hoppe Indian Reservation, upstream from Willow Village Comment
  UCD66720  Gastridium phleoides Joseph P. Tracy 1936-6-10 14926 Humboldt West of mouth of South Fork of Trinity River. 457 Comment
  UC1046521  Gaultheria ovatifolia Rimo Bacigalupi with J. P. Tracy, L. Constance, R. Moran, R. L. Rodriguez, and S. Carlquist 1951-6-14 3413 Humboldt meadow at Snow Camp, ridge between Mad River and Redwood Creek, Bald Mountain Snow Camp; Bald Mountain, Snow Camp 1432 Comment
  CAS-BOT-BC58914  Gaultheria shallon Elizabeth Parsons Hawver 1915-6-1 s.n. Humboldt Carlotta Comment
  CAS-BOT-BC58923  Gaultheria shallon Elmer I. Applegate 1923-9-10 3985 Humboldt Martin's Ferry, Klamath River Comment
  HSC41340  Gaultheria shallon Brad Klipfel 1974-9-7 560 Humboldt Horse Mtn., E fork of Willow Creek. Comment
  HSC76367  Gaultheria shallon Teresa Prendusi 1981-7-23 357 Humboldt Near Black Mountain. 890 Comment
  SEINET2031090 Image available Gaultheria shallon Joseph P. Tracy 1908-1 2863 Humboldt Valley of Van Duzen River; opposite Buck Mountain 762 Comment
  UCSB19651  Gaultheria shallon Lowery, Jos. 1962-08 Humboldt Willow Springs, Mts. ca. 30 mi. E of Eureka 457 Comment
  HSC75456  Gayophytum diffusum subsp. parviflorum J. O. Sawyer 1980-7-18 3600 Humboldt North Trinity Mountain Research Natural Area, north of Mill Creek Lake to Red Cap Hole. Comment
  UC549766  Gayophytum diffusum subsp. parviflorum Joseph P. Tracy 1932-7-11 10400 Humboldt Corral Prairie Klamath Mountains, Trinity Summit 1524 Comment
  UC422799  Gayophytum heterozygum Chesnut and Drew Humboldt Comment
  HSC14652  Genista monspessulana R. J. Vernimen 1963-2-26 7 Humboldt Sunnybrae in canyon parallel to Shirley Blvd. and ending at Beverly Dr. Comment
  HSC28184  Genista monspessulana Richard Curtis 1973-9-27 20 Humboldt Bayside cutoff between Eureka and Arcata. Comment
  UC162854  Genista monspessulana J. P. Tracy 1906-4-22 2413 Humboldt immediate vicinity Eureka 0 Comment
  RSA13517  Gentiana newberryi H. E. Parks 1931-07 1052 Humboldt Bishop Pine Lodge, Trinidad. 76 Comment
  HSC12527  Gentiana sceptrum Wilbur Peterson 1970-10-17 54 Humboldt Big Lagoon Comment
  HSC41183  Gentiana sceptrum Robert M. Specht 1976-10-6 546 Humboldt S shore of Big Lagoon on E side of Hwy. 101 Comment
  UC183701  Gentiana sceptrum Joseph P. Tracy 1913-9-9 4404 Humboldt Patrick's Point North Coast Ranges 30 Comment
  UC524128  Gentiana sceptrum Ira L. Wiggins 1932-7-19 5892 Humboldt 1.5 mi n Trinidad Head Comment
  RSA0028176  Geranium bicknellii var. bicknellii D. E. Anderson 1963-5-25 2497 Humboldt About 4 miles east of Petrolia. Comment
  UC668046  Geranium carolinianum Joseph P. Tracy 1933-7-9 12643 Humboldt Willow Creek Trinity River Valley 152 Comment
  UC165808  Geranium core-core Joseph P. Tracy 1909-6-13 2990 Humboldt Blue Lake Northern Coast Ranges 30 Comment
  UC668043  Geranium core-core Joseph P. Tracy 1933-5-20 12251 Humboldt 1 mi w Petrolia; Northern Coast Ranges, Mattole Valley 60 Comment
  UC1586897  Geranium dissectum Juha Pykala and D. H. Norris 1987-5-20 751 Humboldt about 7.5 rd mi s Ferndale (along Wildcat Road, near Green Pond Ranch) 450 Comment
  UC668044  Geranium molle Joseph P. Tracy 1933-5-19 12197 Humboldt Alton to Fortuna (along the Eel River); Eel River 15 Comment
  HSC89987  Geranium molle Leonel Arguello 1989-6-24 24 Humboldt Lanphere-Christensen Dunes Preserve 3 mi. W of Arcata, Hunt parcel Comment
  UC1198954  Geranium solanderi Joseph P. Tracy 1931-5-23 9453 Humboldt vicinity of Trinidad (Trinidad Station); Northern Coast Region, Trinidad Station 60 Comment
  HSC18645  Geum macrophyllum E. W. Styskel 1963-5-19 37 Humboldt 3 mi. SE of Korbel on Snow Camp Rd. 305 Comment
  UC492183  Geum macrophyllum var. perincisum Joseph P. Tracy 1932-7-14 10540 Humboldt at Corral Prairie, Klamath Mountains, Trinity Summit Corral Prairie; Klamath Mountains, Trinity Summit, Corral Prairie 1524 Comment
  CHSC31278  Gilia capitata Mark Stopher 1980-5-28 75 Humboldt Along Rte 169, 7.5 mi w of Martins Ferry Bridge. Comment
  SEINET12278778  Gilia capitata L. K. Henry 1971-1 s.n. Humboldt along Rt 36, 2 mi E of Dinsmore in Six Rivers National Forest Comment
  CAS-BOT-BC226146  Gilia capitata subsp. pacifica J. P. Tracy; H. E. Parks 1930-5-25 0793 Humboldt Near Bridgeville Comment
  RSA742109  Gilia capitata subsp. pacifica Peter L. Morrell, Nicole Deligans 1993-8-14 317 Humboldt North Coast: about 1 mile south of McNutt-Mattole Rd., 5.2 miles south of Devil's Gate, 8.4 miles south of Cape Mendocino. 30 Comment
  UC133633  Gilia capitata subsp. pacifica Joseph P. Tracy 1907-7-4 2583 Humboldt sandy hillside of coast bluffs between Trinidad and mouth Little River; Northern Coast Ranges, btw Trinidad and Little River 30 Comment
  UC133634  Gilia capitata subsp. pacifica Joseph P. Tracy 1905-6-11 2188 Humboldt near Bucksport (region about Humboldt Bay); Region about Humboldt Bay, Northern Coast Region 0 Comment
  BLMAR606  Gilia millefoliata Jennifer Wheeler 2011-4-1 606 Humboldt King range, growing throughtout the Mattole beach dune area Comment
  HSC23827  Gilia millefoliata Tim Baroni 1971-6-26 64 Humboldt Out the Samoa Peninsula just opposite the Georgia Pacific pulp mill Comment
  UC908974  Gilia millefoliata Joseph P. Tracy 1936-5-30 14833 Humboldt near Samoa (sand dunes, on Humboldt Bay); Northern Coast Region, on Humboldt Bay, nr Samoa 6 Comment
  BLMAR647  Githopsis specularioides Jennifer Wheeler 2011-6-21 647 Humboldt Lacks Creek, Stormy Saddle Prairie 1158 Comment
  HSC37570  Glaux maritima J. D. Ackerman 1975-6-10 453 Humboldt 1 mi. N of Samoa Bridge turnoff from Samoa Blvd., S of Manila Comment
  SD39903  Glehnia littoralis Edith A. Purer 1932-7-27 4151 Humboldt Near Samoa Comment
  UC642340  Glehnia littoralis subsp. leiocarpa Joseph P. Tracy 1927-6-26 8207 Humboldt Stone Lagoon 6 Comment
  BLMAR401  Glyceria elata Clara Sander June, 2005 401 Humboldt Jacoby creek, Jacoby Creek Land Trust, along trail 36 Comment
  UCD66776  Glyceria occidentalis A. A. Beetle; J. P. Tracy, G. L. Stebbins Jr. 1942-6-2 3461 Humboldt Loleta Swamp, south of Eureka. Comment
  RSA42036  Gnaphalium chilense H. C. Cantelow 1936-8-29 1566 Humboldt 1 mile off Riv. [High.?] S. Fork Eel River Bridge, 17 miles N of Garberville Comment
  CDA5423  Gnaphalium japonicum T. C. Fuller 1962-8-6 9358 Humboldt Highway 299 to Blue Lake, 2.6 miles east of Bald Mtn. Summit Road. 1 mile west of Green Point School. 0 Comment
  HSC5711  Gnaphalium palustre Jerry Parker 1968-9-24 74 Humboldt Mckinleyville beach Comment
  UC164897  Gnaphalium palustre Joseph P. Tracy 1909-7-18 3024 Humboldt sand dunes of Ocean Beach; Northern Coast Region, , Humboldt Bay Comment
  HSC29719  Goodyera oblongifolia J. D. Ackerman 1973-8-18 120 Humboldt 2 mi. N of Manila Comment
  CAS-BOT-BC304736  Grindelia hirsutula Doris K. Kildale 1926-6-25 2172 Humboldt Big Lagoon Comment
  CAS-BOT-BC304747  Grindelia hirsutula Henry M. Pollard 1948-8-7 s.n. Humboldt Near Orleans Comment
  HSC37692  Grindelia hirsutula R. Sutherland 1976-8-6 13 .6876 Humboldt Disturbed edge of county road, just W of China Creek 223 Comment
  JEPS41875  Grindelia hirsutula W. L. Jepson 1902-8-4 2145 Humboldt seashore Capetown to Petrolia 3 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
  UC581777  Grindelia hirsutula Joseph P. Tracy 1930-7-5 8831 Humboldt sw slopes fronting the ocean 3 mi s of point of Cape Mendocino Cape Mendocino (on hillsides up to 500 ft elevation) 30 Comment
  CHSC69498  Grindelia stricta var. platyphylla Vernon Oswald; Lowell Ahart 1997-9-4 8845 Humboldt North Coast Region. Big Lagoon County Park at the southwest edge of Big Lagoon. 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
  HSC97938  Hackelia californica Cara Witte 2007-5-31 143 Humboldt Off National Forest 1. Near Board Camp Mountain. Approximately 4 miles south of Brays Opening and 1/2 mile west of road. 1510 Comment
  CAS-BOT-BC302440  Hazardia whitneyi var. discoidea Henry M. Pollard 1946-8-28 s.n. Humboldt Near summit of Orleans Mt. 1828 Comment
  HSC102180  Helenium bigelovii M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-3 1093 Humboldt Patterson Meadows 1555 Comment
  UC53952  Helenium bigelovii J. P. Tracy 1901-5-1 1204 Humboldt Humboldt Bay North Coast Ranges, Humboldt Bay 30 Comment
  CAS-BOT-BC306613  Helenium bigelovii Doris K. Kildale 1925-8-15 1173 Humboldt Elk Horn Prairie - Trinity Summit 1539 Comment
  CAS-BOT-BC306865  Helenium bolanderi Doris K. Kildale 1929-8-5 8773 Humboldt Big Lagoon Comment
  HSC96485  Helenium bolanderi Gordon Leppig 1997-6-19 453 Humboldt Big Lagoon Bog, Big Lagoon County Park 3 Comment
  JEPS35027  Helenium bolanderi Joseph P. Tracy 1937-7-16 15431 Humboldt Trinidad 60 Comment
  JEPS35531  Helenium bolanderi W. L. Jepson 1921-8-7 9325 Humboldt 0.5 to 2 mi back from ocean between Mad River Little River; Dow's Prairie Comment
  RSA93884  Helenium bolanderi F. W. Peirson 1923-7-11 3910 Humboldt 7 miles north of Arcata. Comment
  SEINET10673347 Image available Helenium bolanderi Albert Kellogg, W. G. W. Harford 1868-1 Kellogg 469 Humboldt Comment
  JEPS35541  Helenium puberulum W. L. Jepson 1936-8-13 17892 Humboldt Philipsville S. Fk. Eel River Comment
  CAS-BOT-BC310075  Hemizonella minima Doris K. Kildale 1927-7-22 3910 Humboldt Lassecks Peaks - Coral Goat Camp 1661 Comment
  UC582404  Hemizonella minima Joseph P. Tracy 1929-7-4 8631 Humboldt French Camp Ridge 1066 Comment
  RSA11161  Hemizonia congesta C. B. Wolf 1927-8-29 1218 Humboldt Devils' Gate, S of Cape Mendocino Comment
  POM126140  Hemizonia congesta Joseph P. Tracy 1923-6-20 6337 Humboldt Near Briceland. 305 Comment
  CAS-BOT-BC309991  Hemizonia congesta subsp. tracyi Joseph P. Tracy 1937-7-19 15456 Humboldt Buck Mountain, lower foothills of its northwest slope 914 Comment
  CAS-BOT-BC309994  Hemizonia congesta subsp. tracyi S. K. Harris 1936-6-20 s.n. Humboldt Bluff above Van Duzen River about 1 mile west of Bridgeville Comment
  JEPS82128  Hemizonia congesta subsp. tracyi Rimo Bacigalupi 1959-7-7 7249 Humboldt immediately behind headland of Cape Mendocino (steep grade of coast road, just s of road summit at this point) 30 Comment
  UC1223088  Hemizonia congesta subsp. tracyi Joseph P. Tracy 1950-6-8 18757 Humboldt Comment
  UC1223092  Hemizonia congesta subsp. tracyi Joseph P. Tracy 1946-11-17 17664 Humboldt river bar of Eel at mouth of Van Duzen River; Eel River Comment
  UC180509  Heracleum lanatum Joseph P. Tracy 1914-6-14 4511 Humboldt Carlotta North Coast Ranges, Carlotta 60 Comment
  HSC102572  Heracleum maximum M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-29 1559 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1579 Comment
  HSC56258  Heracleum maximum G. L. Clifton, Terry Griswold 1979-8-2 12401 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  HSC74152  Heracleum maximum Gail Newton 1980-7-20 1614 Humboldt Near Bell Swamps 1426 Comment
  RSA246845  Heracleum maximum R. F. Thorne, P. Everett 1965-8-9 35327 Humboldt Clam Beach County Park: along highway. 3 Comment
  UC1223123  Hesperevax acaulis var. robustior Joseph P. Tracy 1948-5-31 17983 Humboldt 1/2 mi ne Garberville 152 Comment
  UC34953  Heterocodon rariflorum Chesnut and Drew 1888-7-9 Humboldt Kneeland Comment
  UC198602  Heteromeles arbutifolia Miss Landergen Dec 1916 Humboldt Fort Seward; Northern Coast Ranges 91 Comment
  UC480921  Heterotheca oregona var. compacta Harley P. Chandler 1901-6-1 1430 Humboldt Klamath River North Coast Ranges, Klamath River 304 Comment
  CAS-BOT-BC311056  Heterotheca oregona var. oregona A. A. Heller 1924-7-20 13866 Humboldt Along the Eel River at Phillipsville Comment
  CAS-BOT-BC311055  Heterotheca oregona var. oregona Joseph P. Tracy 1933-10-15 13097 Humboldt Miranda, along South Fork of Eel River 121 Comment
  HSC79434  Heuchera micrantha Kenneth Clark 1981-4-5 1228 Humboldt Above S fork Dead Man's Gulch 114 Comment
  CAS-BOT-BC424195  Heuchera micrantha var. hartwegii Alice Eastwood 1907-4-21 s.n. Humboldt Trinidad, Light-house Point Comment
  CAS-BOT-BC312386  Hieracium albiflorum Ira L. Wiggins 1930-7-22 4691 Humboldt Along bank of Redwood Creek between Blue Lake and Willow Creek Comment
  HSC74180  Hieracium albiflorum M. A. Baker 1980-7-23 3162 Humboldt Near Orleans Mtn. 1859 Comment
  HSC57131  Hieracium greenei Overton, Butler 1979-7-25 9903 Humboldt Near Grouse Mtn., close to the town of Willow Creek 1646 Comment
  CDA28238  Hierochloe occidentalis Wilma Mae Lowary & Norah van Kleeck 1974-8-8 Humboldt Lady Bird Johnson Grove, Redwood National Park, northeast of Orick. 0 Comment
  UC1196930  Hippuris vulgaris Joseph P. Tracy 1934-7-2 13284 Humboldt mouth of Little R. 1 Comment
  CAS-BOT-BC280740  Holcus lanatus Henry M. Pollard 1946-8-27 s.n. Humboldt South side of Klamath River, near Boyce [Boise] Creek, Orleans region Comment
  SEINET181175 Image available Holcus lanatus Bassett Maguire, R Maguire; CB Maguire 1934-6-8 15060 Humboldt Coolidge, Redwood Park. Comment
  HSC64190  Holodiscus discolor J. O. Sawyer, M. A. Ericksen 1979-6-23 3378 Humboldt Slopes below Mill Creek Lakes 1585 Comment
  UC1198705  Holodiscus discolor Joseph P. Tracy 1912-7-31 3932 Humboldt Northern Coast Ranges, Buck Mountain near the summit Buck Mountain; Northern Coast Ranges, Buck Mountain 1676 Comment
  HSC26776  Hordeum marinum subsp. gussoneanum Thomas W. Nelson 1971-5-31 466 Humboldt 915 Comment
  UC1198720  Horkelia tridentata subsp. flavescens Joseph P. Tracy 1912-7-31 3935 Humboldt near summit (Buck Mountain); Northern Coast Ranges 1676 Comment
  HSC63030  Horkelia tridentata var. flavescens J. P. Smith, J. O. Sawyer 1973-5-12 6699 Humboldt 9.6 mi. from Redwood Creek on Hoopa Rd. Comment
  CAS-BOT-BC537894  Horkelia tridentata var. flavescens Lincoln Constance; Alan A. Beetle; Joseph P. Tracy 1940-5-17 2613 Humboldt Larabee Valley, near Eureka 762 Comment
  HSC99466  Hosackia oblongifolia var. oblongifolia K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-14 120 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  OBI13229  Hosackia rosea Joseph P. Tracy 1949-6-20 18321 Humboldt Near Boynton Prairie 12 mi SE of Arcata Comment
  UC35519  Hydrophyllum occidentale W. C. Blasdale 1896-6-6 Humboldt McBride's Comment
  UC204110  Hydrophyllum tenuipes Joseph P. Tracy 1918-6-16 4954 Humboldt Eureka; Northern Coast Region 0 Comment
  UC906638  Hydrophyllum tenuipes H. E. Parks and Joseph P. Tracy 1949-6-25 11674 Humboldt Box Camp; Trinity Summit 1463 Comment
  BLMAR562  Hypericum Jennifer Wheeler 2009-7-21 562 Humboldt Headwaters Forest Reserve, along Elk River trail just past yew trees on right 60 Comment
  HSC53943  Hypericum anagalloides Griswold, Butler 1979-7-11 6982 Humboldt Near Snow Camp Lake, close to the town of Willow Creek. 1393 Comment
  POM203702  Hypericum formosum var. scouleri I. L. Wiggins 1932-7-18 5886 Humboldt Boggy meadow between Arcata and Bayside Comment
  JEPS66833  Hypericum perforatum Lincoln Constance 1934-5-26 677 Humboldt w. end of Dyerville Bridge; S. Fork Eel R., Bull Creek Region 45 Comment
  SD51268  Hypericum perforatum Darley F. Howe 1961-8-2 3118 Humboldt 7.7 miles east of Orick on Bald Mountain road. 609 Comment
  UC165829  Hypericum perforatum Joseph P. Tracy 1911-7-9 3478 Humboldt near mouth of Willow Creek; Northern Coast Ranges, Trinity R. Valley 152 Comment
  HSC41265  Hypericum perforatum Brad Klipfel 1974-7-23 458 Humboldt Horse Mtn. along disturbed ridge rd. E of the towers Comment
  POM311762  Hypericum perforatum Karen Hosterman 1957-8-29 1109 Humboldt 7 miles from Orleans, within 1 mile of junction of Klamath Road and Red Cap Creek. 114 Comment
  RSA424593A  Hypericum perforatum T. S. Elias, Barbara A. Elias 1987-8-26 10630 Humboldt Fernbridge, 0.5 mile S of Route 101; along West bank of Eel River, about 0.5 mile N of bridge. Comment
  HSC39792  Hypochaeris glabra Peter Sorensen 1976-7-14 Humboldt N Spit 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
  HSC45647  Hypochaeris glabra Diane L. Reed 1978-4-22 19 Humboldt Tish Tang Campground, 5 mi. N of Willow Creek on Hwy. 96 Comment
  JEPS36538  Hypochaeris radicata Lincoln Constance 1934-5-31 762 Humboldt along n side Bull Creek (from w boundary of park to Grasshopper Peak Road, Squaw Creek Road); South Fork Eel River, Bull Creek Region, Bull Creek flat Comment
  UCR48600  Hypochaeris radicata R. D. Goeden, Don W. Ricker 1987-9-2 870902- 11 Humboldt Loleta, along Cannibal Road 8 Comment
  SEINET10879099  Hypochaeris radicata Charlene A. Bennett, David B. Dunn; Chester T. Dziekanowski 1976-8-6 Bennett 483 Humboldt Collected by Hwy. 101, N side of Orick. 30 Comment
  RSA0004193  Iliamna latibracteata Doris K. Kildale 1926-7-5 2312 Humboldt Orick - 2 mi. north. Comment
  HSC56329  Ipomopsis aggregata Overton, Butler 1979-8-2 12684 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  UC2043019  Iris chrysophylla Barbara Ertter with Thomas J. Delendick 1987-5-16 6940 Humboldt Ca. 3 mi E of Berry Summit on Highway 299, ca. 20 air miles E of Arcata on S side of road above Willow Creek. Comment
  HSC13859  Iris douglasiana S. S. Stutz 1963-5-4 34 Humboldt 7 mi. SE of Arcata on Fickle Hill Rd. Comment
  UC1174761  Iris douglasiana L. W. Lenz and E. K. Balls 1951-5-8 16508 Humboldt 14.7 mi n Trinidad (Hwy 101) 6 Comment
  UC667113  Iris douglasiana Joseph P. Tracy 1933-5-20 12257 Humboldt Mattole Valley; Northern Coast Ranges 30 Comment
  SD42572  Iris macrosiphon Carl B. Wolf 1937-6-19 8913 Humboldt North Coast Range, 7 & 2/10 miles above Bridgeville, on grade to Dinsmores. Moist open forest ridge. 456 Comment
  UC667116  Iris macrosiphon Joseph P. Tracy 1938-3-27 15700 Humboldt Miranda South Fork of Eel River (along South Fork of Eel River) 121 Comment
  HSC32883  Iris tenuissima Thomas W. Nelson, James Nelson 1973-5-28 935 Humboldt McKeown Ranch N of Dinsmore Comment
  HSC64219  Iris tenuissima J. O. Sawyer, M. A. Ericksen 1979-6-23 3382 Humboldt Slopes below Mill Creek Lakes 1585 Comment
  HSC13887  Iris tenuissima B. R. Templeton 1962-5-24 Humboldt Berry Summit, E slope Comment
  HSC25051  Isatis tinctoria D. E. Anderson 1972-6-11 Humboldt Barry Summit Comment
  JEPS60150  Isoetes nuttallii Joseph P. Tracy 1938-7-7 16034 Humboldt at Cold Springs Grouse Mt; Grouse Mt., Cold Springs 1432 Comment
  CHSC57145  Isolepis cernua L. P. Janeway 1983-9-24 700 Humboldt 10-30 ft from water line of Big Lagoon at county campground (south corner of the lagoon). 3 Comment
  HSC77189  Isolepis cernua Paul Wilson 1983-10-5 Humboldt Along Jolly Giant Creek, E of HSU housing, Arcata 15 Comment
  UC165200  Jaumea carnosa Joseph P. Tracy 1909-9-19 3101 Humboldt bay shore at Samoa; North Coast Ranges, vicinity of Humboldt Bay 0 Comment
  HSC45954  Juncus balticus subsp. ater J. P. Smith, Steve Selva 1970-6-14 3822 Humboldt Along Hwy. 96 at Whitmore Creek 152 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
  CHSC102919  Juncus breweri Peter F. Zika 2007-7-19 23173 Humboldt North Coast. S end of Humboldt Bay. 3 Comment
  RSA32913  Juncus breweri A. A. Heller 1929-8-4 s.n. Humboldt Little River. Comment
  HSC23143  Juncus bufonius Norman Dennis 1965-6-19 128 Humboldt 0.25 mi. S and 1 mi. E of jct. of Barry Ridge Rd. and Eureka-Bridgeville county rd., along Ashfield Ridge Rd., 3 mi. SE of Kneeland 793 Comment
  UC552257  Juncus bufonius var. occidentalis Harold E. Parks and Joseph P. Tracy 1935-6-16 11273 Humboldt lower nw slopes Buck Mt. 792 Comment
  HSC67957  Juncus confusus Steve Selva, J. P. Smith 1970-6-30 4110 Humboldt Comment
  UC1152108  Juncus covillei Joseph P. Tracy 1930-6-29 8818 Humboldt near Dinsmore's; Buck Mountain Comment
  POM273046  Juncus effusus subsp. pacificus Henry M. Pollard s.n. Humboldt Near Orleans. Comment
  HSC14053  Juncus falcatus D. E. Anderson 1961-9-9 1802 Humboldt Big Lagoon County Park Comment
  RSA168868  Juncus falcatus var. falcatus Joseph P. Tracy 1938-7-6 16019 Humboldt Big Lagoon Comment
  UC1196725  Juncus hesperius J. P. Tracy 1900-6-23 859 Humboldt immediate vicinity Eureka 0 Comment
  HSC56395  Juncus laccatus Terry Griswold, Marvin Butler 1979-7-11 6963 Humboldt Near Snow Camp Mtn., close to the town of Willow Creek 1320 Comment
  UCD150382  Juncus lescurii William Anderson and H. Mc. 1964-8-6 s.n. Humboldt Freshwater Lagoon. Comment
  UC1152002  Juncus occidentalis Joseph P. Tracy 1930-7-6 8844 Humboldt Kneeland Prairie 762 Comment
  CAS-BOT-BC154066  Juncus planifolius Peter F. Zika 2008-10-19 24229 Humboldt E side of Route 101, near Exit 728 for Trinidad Beach 110 Comment
  CHSC105145  Juncus planifolius Peter F. Zika 2008-10-19 24229 Humboldt Common in damp ditches, E side of Route 101, near Exit 728 for Trinidad Beach 110 Comment
  SEINET10796051 Image available Juncus tenuis Unknown 1883-1 Rattan s.n. Humboldt Comment
  CHSC103507  Juncus xiphioides Peter F. Zika 2009-6-16 24501 Humboldt Outer North Coast Ranges. West shore of Trinity River, near boat ramp, N end of town of Willow Creek. 120 Comment
  HSC56954  Juncus xiphioides Overton, Butler 1979-7-23 9463 Humboldt Near Horse Mtn. Mine, close to the town of Willow Creek 1295 Comment
  CAS-BOT-BC235883  Keckiella corymbosa Joseph P. Tracy 1937-7-11 15422 Humboldt Vicinity of Garberville 121 Comment
  CAS-BOT-BC237835  Keckiella lemmonii Marcus E. Jones 1931-7-16 28828 Humboldt Junction, East of Arcata Comment
  UC154280  Kopsiopsis strobilacea Mrs. M. H. Manning 1901-1 Humboldt Hupa Valley Comment
  HSC102171  Kyhosia bolanderi M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 1083 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  HSC5894  Lactuca saligna R. I. Bonn 1965-10-1 Humboldt 2 mi. N of Bridgeville on May Ranch 701 Comment
  HSC77915  Landoltia punctata Daniel V. Richards 1981-8-25 102 Humboldt 11 km E of Arcata, W End Rd. Comment
  RSA256583  Lapsana communis J. O. Sawyer 1970-6-24 2269 Humboldt S of Mill Creek Gap. F.S. Road 10N02. 1433 Comment
  CAS-BOT-BC337996  Lasthenia californica Doris K. Kildale 1926-4-30 1933 Humboldt Fruitland Hill - Harris road Comment
  CAS-BOT-BC352930  Lasthenia glaberrima S. K. Harris; J. P. Tracy; H. S. Yates 1936-6-17 3439 Humboldt Northwest slopes of Buck Mountain. 822 Comment
  HSC99712  Lathyrus angulatus Glenn W. K. Shelton 2010-7-10 13 Humboldt W of Dinsmore, 0.9 mi. S of Hwy. 36 along FS Rd. 1N30, S side of road 747 Comment
  JEPS82141  Lathyrus biflorus Thomas W. Nelson and Tom Jimerson 1980-8-4 6233 Humboldt ne slope Red Mountain; North Coast Ranges, Blocksburg Quad. 1371 Comment
  HSC14735  Lathyrus japonicus R. C. Hoover 1965-5-18 57 Humboldt Clam Beach Comment
  JEPS55264  Lathyrus jepsonii var. californicus W. L. Jepson 1902-7-10 2010 Humboldt Martin's Ranch South Fork Trinity River Comment
  UC495705  Lathyrus lanszwertii var. tracyi Joseph P. Tracy 1927-4-10 7893 Humboldt near The South Fork; Northern Coast Ranges, Trinity River Valley 182 Comment
  HSC40951  Lathyrus littoralis Linda M. Barker 1976-6-1 1560 Humboldt Lanphere-Christensen Dunes, 3 mi. W of Arcata. Comment
  RSA60500  Lathyrus odoratus John H. Thomas 1949-6-14 909 Humboldt betw Le Perron Flat and whiteys Peak along the trail. E of town of Orleans Comment
  JEPS79917  Lathyrus polymorphus Joseph P. Tracy 1932-7-20 10735 Humboldt just w of Corral Prairie (Klamath Mountains, Trinity Summit); Klamath Mountains, Trinity Summit 1524 Comment
  HSC97914  Lathyrus polyphyllus Cara Witte 2007-6-14 279 Humboldt Along National Forest 1. Near Kinsey Ridge. 3/4 mile south of intersection with 4N06. 1256 Comment
  UC495709  Lathyrus polyphyllus H. E. Parks and Joseph P. Tracy 1931-5-24 9455 Humboldt Kneeland, near school house Northern Coast Ranges 762 Comment
  HSC18847  Lathyrus sphaericus Cherry Kline 1971-5-31 45 Humboldt 1.5 mi. NW of Petrolia on side of Mattole Rd. Comment
  HSC95459  Lathyrus sulphureus D. K. Imper 1993-6-25 Humboldt Table Bluff Ecological Reserve near Lighthouse Ranch, Table Bluff. 15 Comment
  NY73892  Lathyrus torreyi H. N. Bolander 1866-1 6506 Humboldt Thickets near the coast Comment
  UC198654  Lathyrus torreyi Joseph P. Tracy 1917-5-30 4786 Humboldt Dows Prairie Northern Coast Region 60 Comment
  RSA64951  Lathyrus vestitus subsp. bolanderi C. L. Hitchcock 1949-6-8 19087 Humboldt 1 mile SE of Willow Creek, along Highway #299. Comment
  CAS-BOT-BC325930  Layia carnosa Joseph P. Tracy 1917-5-30 4796 Humboldt Sand dunes at mouth of Little River. 6 Comment
  CAS-BOT-BC325995  Layia carnosa David D. Keck; J. Clausen 1935-6-16 3381 Humboldt Mouth of Little River. Comment
  HSC5912  Layia carnosa L. H. Myers 1963-5-13 15 Humboldt Dunes W of Lanpheres Rd., Mad River Slough area. Comment
  HSC90659  Layia carnosa Gail Newton 1982-5-5 3542 Humboldt Elk River Wildlife Area, Eureka. Comment
  UC1223219  Layia gaillardioides Joseph P. Tracy 1950-6-8 187860 Humboldt Petrolia Comment
  UC179962  Lemna turionifera Joseph P. Tracy 1914-9-13 4630 Humboldt at Eureka Eureka; Northern Coast Region, Eureka 0 Comment
  HSC91909  Leontodon saxatilis subsp. saxatilis E. Mackey 1986-10-7 Humboldt Patrick's Point State Park; near Penn Creek Campground Comment
  UC1239532  Leontodon saxatilis subsp. saxatilis Joseph P. Tracy 1918-8-15 5094 Humboldt Eureka Northern Coast Region, Eureka 0 Comment
  HSC26342  Lepidium lasiocarpum Thomas W. Nelson 1971-4-14 379 Humboldt Along Samoa peninsula adjacent to the Coast Guard Station Comment
  UC492269  Lepidium nitidum Joseph P. Tracy 1928-3-24 8407 Humboldt 3 mi s Point of Cape Mendocino; Northern Coast Ranges, Cape Mendocino 3 Comment
  HSC45056  Leptosiphon androsaceus R. Sutherland 1978-4-23 34 .23478 Humboldt 558 Comment
  CAS-BOT-BC341823  Lessingia nemaclada Henry M. Pollard 1943-8-1 s.n. Humboldt Orleans Comment
  UC176859  Lessingia nemaclada Joseph P. Tracy 1911-7-8 3445 Humboldt near mouth Willow Creek; Northern Coast Ranges, Valley of Trinity River 152 Comment
  HSC3105  Leucojum aestivum J. C. Reppas 1963-2-22 20 Humboldt 820 Fickle Hill Rd. Comment
  CAS-BOT-BC444064  Lewisia leeana Joseph P. Tracy 1935-7-24 14200 Humboldt Trinity Summit. Near Ranger Station 1828 Comment
  HSC101968  Lewisia nevadensis M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-12 864 Humboldt Patterson Meadows 1555 Comment
  BLMAR412  Leymus X vancouverensis Jennifer Wheeler 2007-8-22 412 Humboldt South Spit, East side, eastern edge of north end Comment
  CAS-BOT-BC436496  Ligusticum apiifolium Doris K. Kildale 1927-7-17 3763 Humboldt Bug Creek 792 Comment
  UC1197174  Ligusticum apiifolium Joseph P. Tracy 1930-7-6 8851 Humboldt at crossing of the Iaqua to yager rd. North Yager Creek 396 Comment
  HSC56325  Ligusticum grayi Overton, Butler 1979-8-2 12668 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  HSC21521  Lilaeopsis occidentalis J. W. Johnson 1962-6-5 Humboldt Lanphere Farm, Samoa Peninsula, Hollow 10 Comment
  CAS-BOT-BC508389  Lilium columbianum V. Rattan 1879-1-1 s.n. Humboldt Klamath Comment
  CAS-BOT-BC508392  Lilium columbianum Doris K. Kildale 1927-7-10 3739 Humboldt Gans Prairie, Bald Hills Road Comment
  CAS-BOT-BC508397  Lilium columbianum W. R. Dudley 1899-1-1 s.n. Humboldt Big Lagoon, south of Klamath River Comment
  HSC48845  Lilium kelleyanum Brad Klipfel 1973-7-15 207 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  UC175293  Lilium kelloggii Joseph P. Tracy 1913-7-20 4376 Humboldt e of Korbel (Bald Mountain); Northern Coast Ranges, Bald Mountain 914 Comment
  UC1198245  Lilium occidentale Joseph P. Tracy 1938-7-15 16065 Humboldt 2 mi s Field's Landing (near Still Ranch) 6 Comment
  UC175928  Lilium occidentale Joseph P. Tracy 1912-6-16 3705 Humboldt near Indianola (on Table Bluff); Northern Coast Region, Humboldt Bay Region 0 Comment
  UC177231  Lilium occidentale Joseph P. Tracy 1912-6-16 3705 Humboldt near Indianola (on Table Bluff); Northern Coast Region, Humboldt Bay Region 0 Comment
  CAS-BOT-BC130683  Lilium occidentale Dr. Doris Niles; Thomas Nelson 1974-6-20 s.n. Humboldt On the Wiggens ranch just west of the garbage dump Comment
  UC1198235  Lilium pardalinum Joseph P. Tracy 1924-7-4 6714 Humboldt Snow Camp; Northern Coast Ranges 1371 Comment
  UC303044  Lilium pardalinum Joseph P. Tracy 1926-6-27 7668 Humboldt Horse Mountain; Northern Coast Ranges 1463 Comment
  HSC53855  Lilium pardalinum subsp. pardalinum Griswold, Butler 1979-7-10 6322 Humboldt Near Board Camp Mtn., close to the town of Willow Creek 1372 Comment
  HSC56956  Lilium pardalinum subsp. pardalinum Overton, Butler 1979-7-23 9467 Humboldt Near Horse Mtn. Creek, close to the town of Willow Creek 1326 Comment
  HSC57043  Lilium pardalinum subsp. pardalinum Overton, Butler 1979-7-24 9687 Humboldt Near Friday Camp, close to the town of Willow Creek. 1250 Comment
  HSC15586  Lilium pardalinum subsp. pardalinum D. G. Hauger 1967-7-15 52 Humboldt Comment
  HSC63836  Lilium pardalinum subsp. pardalinum M. A. Baker 1979-6-29 951 Humboldt 900 Comment
  CAS-BOT-BC132959  Lilium rubescens A. M. Vollmer; L. Beane 1951-6-11 135 Humboldt Bridgeville Comment
  HSC97994  Lilium washingtonianum subsp. purpurascens Cara Witte 2007-7-9 460 Humboldt Forest Service Road 4N32. 1.25 miles south of intersection with 4N32E. 1430 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
  JEPS19587  Limnanthes douglasii Joseph P. Tracy 1921-4-24 5476 Humboldt Philipsville Northern Coast Ranges (facing South Fork of Eel River) 121 Comment
  HSC103462  Limnanthes douglasii subsp. douglasii Thomas W. Nelson, Jane Nelson 2005-5-1 9306 Humboldt Between State Route 101 and exit to Sunnybrae 5 Comment
  HSC71066  Limnanthes douglasii subsp. nivea Thomas W. Nelson, Jane P. Nelson 1977-5-30 3399 Humboldt McKeown Ranch; along road to Anderson's Ford 854 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
  RSA15573  Limonium californicum Carl B. Wolf 1927-8-28 1187 Humboldt Eureka Bay on road to Arcata Comment
  UC154019  Limonium californicum Joseph P. Tracy 1901-8-7 1254 Humboldt Samoa Northern Coast Region, Region about Humboldt Bay (salt marsh) 0 Comment
  UC1198568  Linanthus bicolor Joseph P. Tracy 1911-7-10 3487 Humboldt near Mouth of Willow Creek; Northern Coast Ranges, Valley of Trinity River 152 Comment
  JEPS58421  Linanthus filipes W. L. Jepson 1902-7-11 2016 Humboldt Martin's Ranch South Fork of Trinity River Comment
  UC162582  Linanthus filipes Joseph P. Tracy 1911-7-9 3456 Humboldt near Willow Creek (hill slopes at w side of Trinity River); Northern Coast Ranges, Trinity River 182 Comment
  RSA8323  Linaria vulgaris I. L. Wiggins 1932-7-19 5890 Humboldt Roadside near Trinidad Head, Comment
  HSC72632  Linnaea borealis subsp. longiflora J. P. Smith 1977-7-3 9251 Humboldt Six Rivers National Forest, along the road to Onion Lake, just above Blue Lake 976 Comment
  HSC15803  Linum bienne Jack Rockwell 1962-4-29 78 Humboldt Lone Star Jct. Comment
  UC169892  Linum bienne Joseph Burtt Davy and Walter C. Blasdale 1899-6-19 5685 Humboldt North Coast Ranges, Hoopa Mountain Hoopa Mountain; North Coast Ranges, Hoopa Mountain Comment
  UCR122366  Linum bienne George K. Helmkamp, E. A. Helmkamp 2001-7-8 6980 Humboldt North Coast, CA Hwy 36, along the Van Duzen River, 19.6 mi east of CA Hwy 101, west of Bar W Road 137 Comment
  HSC59497  Linum bienne M. A. Ericksen 1979-5-23 304 Humboldt 880 Central Ave., McKinleyville. Comment
  HSC15806  Linum lewisii Frances Oldridge 1946-1 Humboldt Fickle Hill Comment
  HSC73409  Listera cordata var. nephrophylla Bruce Potter, Leslie Sieburth, Susan Ahrens 1981-4-19 653 Humboldt 229 Comment
  UC484048  Lithocarpus densiflorus Carl B. Wolf 1930-10-29 Humboldt 4 mi s Honeydew P.O. (Old Coast Route) 304 Comment
  UC1196485  Lithophragma affine Joseph P. Tracy 1913-6-14 4118 Humboldt opposite Buck Mountain (Valley of Van Duzen River, Dinsmore's Ranch); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  UC1196501  Lithophragma affine Joseph P. Tracy 1921-4-30 6015 Humboldt Trinity River Valley near Willow Creek (Northern Coast Ranges); , Trinity River Valley, nr Willow Creek 152 Comment
  HSC45399  Lithophragma campanulatum Thomas W. Nelson, Jane Nelson 1977-6-19 3492 Humboldt N of Goat Hill 1616 Comment
  UC1199423  Logfia filaginoides Joseph P. Tracy 1927-5-8 7972 Humboldt grassy slopes facing South Fork Eel River; Philipsville 121 Comment
  UC1103160  Lolium multiflorum Joseph P. Tracy 1948-6-13 18043 Humboldt 7 mi nw Blocksburg (Larrabee Creek); Larrabee 304 Comment
  UC50708  Lolium multiflorum Joseph Burtt Davy and Walter C. Blasdale 1899-7-30 6112 B Humboldt Arcata; Russ Ranch, North-Western California Comment
  UCD66191  Lolium multiflorum Malcolm A. Nobs; S. Galen Smith 1949-8-3 1177 Humboldt Around Fields Landing. Comment
  HSC42239  Lolium perenne W. F. Nickel 1965-5-13 Humboldt On W side of College Elementary School on Humboldt State College Campus. Comment
  SEINET194910 Image available Lolium perenne A. A. Heller 1923-7-9 13779 Humboldt Arcata near 10 Comment
  UC50504  Lolium perenne Joseph Burtt Davy and Walter C. Blasdale 1899-7-30 6204 Humboldt Arcata; Russ Ranch Comment
  JEPS14213  Lomatium dasycarpum subsp. dasycarpum Joseph P. Tracy 1927-3-27 7852 Humboldt near the S. Fork Trinity R. Valley 182 Comment
  SEINET3822052 Image available Lomatium dissectum Lincoln Constance, Alan A. Beetle, Joseph P. Tracy 1940-5-17 2617 Humboldt Buck Mountian, near Eureka 792 Comment
  HSC32939  Lomatium dissectum var. dissectum Thomas W. Nelson, James Nelson 1973-5-28 953 Humboldt McKeown Ranch N of Dinsmore Comment
  JEPS14246  Lomatium dissectum var. dissectum Joseph P. Tracy 1930-6-29 8808 Humboldt lower foothhills of Buck Mt. (on its n.w. slope); Northern Coast Ranges, Buck Mt. 762 Comment
  UC1197160  Lomatium dissectum var. dissectum Joseph P. Tracy 1933-7-25 12888 Humboldt Grouse Mt. North Coast Ranges, Grouse Mt. 1524 Comment
  HSC70564  Lomatium macrocarpum M. A. Baker 1980-7-23 3141 Humboldt Near Orleans Mtn. 1859 Comment
  RSA43875  Lomatium macrocarpum H. M. Pollard 1948-7-31 s.n. Humboldt Orleans Mountain 1677 Comment
  UC32502  Lomatium macrocarpum W. C. Blasdale 1896-6-6 Humboldt Kneeland's Pr. Comment
  UC314598  Lomatium nudicaule Joseph P. Tracy 1925-7-26 7208 Humboldt at mouth of S. Fork Trinity R. Valley; Northern Coast Ranges, Trinity R. Valley 182 Comment
  JEPS118113  Lomatium utriculatum Dean W. Taylor 2005-6-9 19338 Humboldt vicinity Larabee Valley; ridge dividing Swift Creek from Horse Creek, ca. 2 air miles SSE of Larabee Valley 853 Comment
  UC1197140  Lomatium utriculatum Joseph P. Tracy 1924-3-16 6626 Humboldt Northern Coast Ranges, Garberville 121 Comment
  UC169081  Lonicera hispidula var. vacillans Mrs. M. H. Manning 1901-7-27 308 Humboldt near Hupa (Bald Hill) Comment
  HSC90392  Lonicera involucrata Jean Hanson 1981-5-10 143 Humboldt Indian Island, Humboldt Bay, Eureka, W end of island. Comment
  RSA246894  Lonicera involucrata R. F. Thorne, P. C. Everett 1965-8-9 35301 Humboldt Big Lagoon. 3 Comment
  HSC23144  Lonicera involucrata var. ledebourii Thomas W. Nelson 1970-10-17 238 Humboldt Big Lagoon Comment
  HSC3925  Lonicera involucrata var. ledebourii Jack Rockwell 1962-4-29 40 Humboldt N bank of Van Duzen River, E of Hwy. 101 9 Comment
  HSC3930  Lonicera involucrata var. ledebourii R. A. Rasp 1964-5-7 37 Humboldt 2 mi. S of Korbel on Simpson Lumber Co. land. Comment
  HSC59044  Lonicera involucrata var. ledebourii Thomas Wood 1979-4-20 123 Humboldt Along frontage Rd., parallel and E of Hwy. 101 at Patrick Creek Drive intersection, S of Patrick Creek. 6 Comment
  JEPS13667  Lonicera involucrata var. ledebourii Mr. and Mrs. Geo. Parrish 1930-5-21 Humboldt Trinidad 30 Comment
  UC1239556  Lonicera involucrata var. ledebourii Joseph P. Tracy 1923-6-17 6269 Humboldt Big Lagoon 3 Comment
  HSC98254  Lotus corniculatus Norman H. Moe 1962-5-19 Humboldt Lanphere's Place Comment
  HSC98253  Lotus corniculatus J. W. Johnson 1961-8-23 1049 Humboldt Arcata, Lanphere farm, Samoa Peninsula Comment
  UC1223405  Lotus denticulatus Joseph P. Tracy 1934-6-14 13219 Humboldt Horse Mountain 1432 Comment
  UC199807  Lotus denticulatus Chesnut and Drew Jul 1888 Humboldt Bank of Mad River Mad River Comment
  UC1052456  Lotus humistratus H. E. Parks Aug 1941 24183 Humboldt Little River State Park Comment
  UC169330  Lotus humistratus Joseph P. Tracy 1912-7-26 3833 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  HSC79469  Lotus humistratus Kenneth Clark 1980-5-10 632 Humboldt Western slope above Dead Man's Gulch 130 Comment
  SEINET6932536  Lotus micranthus Wanda P. Vestal, A. G. Vestal 1937-6-23 s.n. Humboldt East end of Bald Hills, southeast of Orick. Comment
  UC1223396  Lotus micranthus Joseph P. Tracy 1933-7-9 12644 Humboldt opposite Willow Creek; Trinity River Valley Comment
  UC198653  Lotus micranthus Joseph P. Tracy 1917-5-30 4795 Humboldt mouth of Little River Northern Coast Region, Little River 6 Comment
  HSC97236  Lotus purshianus var. purshianus Thomas W. Nelson, Dick Brummitt & Barbara Ertter 2004-7-4 9281 Humboldt Trinity River bar down stream from mouth of Willow Creek 152 Comment
  UC1223420  Lotus purshianus var. purshianus Joseph P. Tracy 1933-8-30 13021 Humboldt Titlow Mountain Grouse Mountain 1524 Comment
  JEPS43859  Ludwigia palustris Jos. P. Tracy 1926-8-12 7765 Humboldt near the S. Fork Trinity R. Valley 182 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
  HSC14763  Lupinus albicaulis R. Spellenberg 1965-6-13 1113 Humboldt About 2 mi. S of Hwy. through Hoopa, E side of Trinity River Comment
  UC502997  Lupinus albicaulis var. shastensis Joseph P. Tracy 1932-7-15 10586 Humboldt ridges e Corral Prairie; Klamath Mountains, Trinity Summit, e of Corral Prairie 1828 Comment
  UC198580  Lupinus albifrons Joseph P. Tracy 1916-6-19 4707 Humboldt Burr Creek Northern Coast Ranges, Burr Creek (on high ridges at Robertson Ranch) 914 Comment
  SEINET12154337  Lupinus albifrons J. P. Tracy 1939-1 16289 Humboldt nr Dinsmore's. along Van Duzen Rever, opposite Buck Mtn 762 Comment
  CDA27368  Lupinus albifrons var. collinus K. Eickhoff, C. M. Witte 2005-6-24 15 Humboldt Approximately 13 miles south of Highway 299 on NF1. Comment
  HSC14780  Lupinus arboreus D. A. Haskell 1966-4-23 28 Humboldt Near the town of Samoa Comment
  HSC2122  Lupinus arboreus C. B. Wolf 1927-8-29 1209 Humboldt Devil's Gate, S of Cape Mendocino. Comment
  SEINET10488497  Lupinus arboreus Chester T. Dziekanowski, David B. Dunn; Charlene A. Bennett 1976-8-6 Dziekanowski 2501 Humboldt In the vicinity of a state park on the beach opposite mckinleyville. Vast Colony of yellow lupinus arboreus 3 Comment
  UC150119  Lupinus bicolor Harley P. Chandler May, 1901 1094 Humboldt Scotia; North Coast Ranges, Scotia 60 Comment
  CDA27401  Lupinus bicolor J. Lumbert, J. Robinson 2005-6-8 6 Humboldt 0.4 mile south of Highway 299 on Titlow Hill Road. Comment
  HSC45091  Lupinus bicolor R. Sutherland 1978-4-23 1 .23478 Humboldt Head of Kinsey (Fraser) Ridge 716 Comment
  SBBG3622  Lupinus formosus H. and M. Dearing 1939-5-24 3425 Humboldt W of Panther Gap, Dyerville, Honeydew Comment
  UC1223282  Lupinus formosus Joseph P. Tracy 1941-9-1 16997 Humboldt Blue Lake Comment
  SEINET12154561  Lupinus latifolius H. P. Chandler 1901-1 1365 Humboldt Kalmath River 152 Comment
  UC15889  Lupinus latifolius var. latifolius Harley P. Chandler June, 1901 1365 Humboldt Hupa Indian Reservation; North Coast Ranges, Hupa Indian Reservation 152 Comment
  JEPS65077  Lupinus lepidus var. sellulus Joseph P. Tracy 1918-7-5 5021 Humboldt White Thorn Valley; Northern Coast Ranges, White Thorn Valley 304 Comment
  OBI12876  Lupinus luteolus Carl B. Wolf 1937-8-12 9211 Humboldt North Coast Range, 20 mi N of Bridgeville on rd to Kneeland 457 Comment
  UC161546 Image available Lupinus microcarpus Joseph P. Tracy 1911-7-4 3280 Humboldt near mouth of Willow Creek; Northern Coast Ranges, Valley of Trinity River, Willow Creek; Willow Creek, Humboldt Co. 152 Comment
  OBI36369  Lupinus nanus David J. Keil 1983-7-1 17271 Humboldt Ca. 13 mi W of jctn US 101 along Bull Creek Flats rd Comment
  UC503007  Lupinus nanus Joseph P. Tracy 1932-5-10 9946 Humboldt Petrolia; Northern Coast Ranges, Mattole Valley 60 Comment
  UCD109339  Lupinus pachylobus W. Williams 1951-1 s.n. Humboldt Bear Creek Valley. Comment
  SEINET12154709  Lupinus rivularis J. P. Tracy 1934-1 13482 Humboldt Samoa Sand Dunes Comment
  HSC74400  Lupinus sellulus subsp. ursinus Gail Newton 1980-6-28 734 Humboldt Near Mad River Butte. 1536 Comment
  UC1488744  Lupinus tracyi Marc Baker 1980-7-19 2987 Humboldt near Bret Hole 105 Comment
Read comments
Jul 7 2009
  HSC44560  Luzula comosa Brad Klipfel 1973-7-15 179 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC49098  Luzula comosa J. O. Sawyer 1977-4-23 2838 Humboldt Along Bald Hills Rd. E of Hoopa Comment
  HSC98577  Luzula comosa Cara Witte 2007-5-26 658 Humboldt National Forest 1. 1 mile north of intersection with Forest Service Road 5N10. 1457 Comment
  RSA15576  Luzula comosa Carl B. Wolf 1927-8-28 1167 Humboldt 9 miles from Willow Creek, on the grade of the road to Blue Lake. Comment
  CAS-BOT-BC499137  Luzula macrantha Peter F. Zika 2011-7-3 25497 Humboldt Titlow Hill Road, 3.7 road miles SE of Rte 299 at Berry Summit, 1 air km SSW of Horse Mountain 1310 Comment
  CAS-BOT-BC441227  Luzula macrantha Joseph P. Tracy 1926-5-2 7446 Humboldt North Coast Ranges: Willow Creek Canyon, near Ruby Creek 609 Comment
  SD53243  Luzula parviflora Darley F. Howe 1962-5-22 Humboldt 3 miles east of Orick on Bald Mountain Road. 395 Comment
  UC3007  Luzula parviflora Harley P. Chandler May, 1901 1163 Humboldt Humboldt Bay North Coast Ranges, Humboldt Bay 30 Comment
  RSA54022  Luzula parviflora E. K. Balls, Lee W. Lenz 1956-6-12 21662 Humboldt 4.4 miles SW from Willow Creek along U. S. Highway 299 to Arcata. 366 Comment
  SEINET6166096  Lycopodium clavatum W. Roderick 1967-9-15 s.n. Humboldt East of Trinidad, Camp 18 Georgia-Pacific Co. 30 Comment
  UC1191231  Lysichiton americanus Malcolm A. Nobs and S. Galen Smith 1949-8-3 1183 Humboldt southern outskirts of Eureka Comment
  UCR39976  Lythrum hyssopifolia L. P. Janeway, Paul Wilson 1984-6-25 821 Humboldt Humboldt Bay region, North Spit of Bay, Bureau of Land Management lands near the Coast Guard Station. 5 Comment
  RSA0015876  Lythrum hyssopifolia J. P. Smith, Thomas W. Nelson 1977-6-30 9203 Humboldt Samoa Peninsula just east of the drag strip. Comment
  UC176778  Madia anomala J. P. Tracy 1903-5-22 1888 Humboldt at Alder Point; Eel River 152 Comment
  HSC5319  Madia elegans H. E. Parks, J. P. Tracy 1930-5-25 882 Humboldt Laribee Valley 762 Comment
  UC34191  Madia elegans Harley P. Chandler 1901-6-1 1409 Humboldt Klamath River North Coast Ranges 243 Comment
  HSC50342  Madia gracilis Overton, Butler 1979-7-24 9692 Humboldt Near Friday Camp, close to the town of Willow Creek. 1250 Comment
  UCD134335  Madia sativa Linda M. Barker 1976-7-5 1636 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  RSA15574  Mahonia nervosa C. B. Wolf 1927-8-28 1179 Humboldt 13 mi. above Blue Lake on the Lord Ellis Road. Comment
  HSC103978  Maianthemum dilatatum Kyle Brown 2015-4-25 38 Humboldt Trinidad, along trail at Trinidad State Beach Park 15 Comment
  UCR275106  Maianthemum dilatatum Charity A. Hartshorn 2016-5-14 36 Humboldt Arcata Community Forest 244 Comment
  HSC90857  Maianthemum dilatatum M. Roantree 1985-5-24 64 Humboldt E side of Trinidad Head Comment
  UCD161450  Maianthemum dilatatum K. Esau 1934-5-8 s.n. Humboldt Redwood Highway near Scotia. Comment
  HSC15650  Maianthemum racemosum subsp. amplexicaule V. G. Vieira 1963-5-2 47 Humboldt Butler Valley Ranch Comment
  HSC40874  Maianthemum racemosum subsp. amplexicaule Thomas W. Nelson 1976-7-9 3005 Humboldt S of Mt. lassic 1707 Comment
  HSC53946  Maianthemum stellatum Griswold, Butler 1979-7-11 6994 Humboldt Near Snow Camp Lake, close to the town of Willow Creek. 1393 Comment
  CAS-BOT-BC347413  Malacothrix floccifera Doris K. Kildale 1926-8-8 2464 Humboldt Mouth of Bull Creek Comment
  CAS-BOT-BC140132  Malus fusca L. R. Abrams; G. T. Benson 1924-5-17 10730 Humboldt Trinidad Head Comment
Read comments
Jun 17 2020
  CAS-BOT-BC140137  Malus fusca W. R. Dudley 1899-1-1 s.n. Humboldt Arcata Comment
  UC180179  Malus fusca Joseph P. Tracy 1914-5-3 4420 Humboldt Eureka; Northern Coast Region 0 Comment
  UC1197979  Malva nicaeensis Joseph P. Tracy 1924-6-28 6699 Humboldt Northern Coast Ranges, Hydesville Hydesville; Northern Coast Ranges, Hydesville 60 Comment
  HSC47495  Marah oregana Sheila Logan 1978-4-9 19 Humboldt Fieldbrook, 0.5 mi. E of McKinleyville on Murray Rd. 122 Comment
  HSC7032  Marah oregana G. N. Bos 1965-5-15 268 Humboldt 2 mi. W of Berry Summit along U.S. 299. 701 Comment
  HSC89477  Marah oregana P. A. Daly 1986-3-12 89 Humboldt Trinidad Head 61 Comment
  HSC79515  Marah oregana Kenneth Clark 1980-3-1 513 Humboldt Shelter Cove, middle alluvial terrace, Dead Man's Gulch 37 Comment
  RSA441241  Marah oregana Christopher Davidson 1973-5-29 2206 Humboldt 2 miles S of Carlotta on Hwy 36 61 Comment
  UC1198477  Marah oregana Joseph P. Tracy 1940-5-17 16548 Humboldt McClellan Mt. 762 Comment
  UC1222345  Marah oregana Joseph P. Tracy 1951-5-20 19402 Humboldt Barry Ridge Kneeland Prairie 762 Comment
  HSC79362  Matricaria discoidea Kenneth Clark 1981-5-2 1360 Humboldt Point Delgada, Mario's Marina 15 Comment
  UC1145134  Melica aristata Joseph P. Tracy 1949-7-19 18374 Humboldt Friday Camp Grouse Mountain (Grouse Mountain) 1219 Comment
  POM161909  Melica californica var. nevadensis Joseph P. Tracy 1921-5-30 5491 Humboldt Kneeland Prairie. 762 Comment
  SEINET200335 Image available Melica californica var. nevadensis J. P. Tracy 1927-5-14 7999 Humboldt Trinity River Valley near the S Fork 183 Comment
  HSC74230  Melica harfordii M. A. Baker 1980-7-15 2981 Humboldt Near Whiting Ridge. 1341 Comment
  HSC99070  Melica harfordii Cara Witte 2007-7-12 521 Humboldt Along Forest Service Road 5N10. 1.25 miles south of intersection with 5N41. 1283 Comment
  UC1103756  Melica harfordii Joseph P. Tracy 1919-5-31 5172 Humboldt Willow Creek Northern Coast Ranges, Trinity River (hill slopes at w side of Trinity River) 152 Comment
  UC1132278  Melica harfordii H. L. Person 1932-5-11 Humboldt near Arcata 0 Comment
  UC188817  Melica harfordii Joseph Burtt Davy and Walter C. Blasdale 1899-7-30 5210 Humboldt Russ Ranch Comment
  RSA10101  Melica subulata Joseph P. Tracy 1933-5-28 12416 Humboldt Carlotta. 61 Comment
  UC34140  Melica subulata Joseph Burtt Davy and Walter C. Blasdale 1899-6-10 5405 Humboldt Hubbard's Station; North Coast Ranges Comment
  UCD88673  Melica subulata R. Tofsrud 1949-7-1 s.n. Humboldt On road from Scotia to Capetown. Comment
  HSC79465  Melica torreyana Kenneth Clark 1980-4-18 609 Humboldt Along access trail to Deadman's Gulch. 46 Comment
  HSC28183  Melilotus albus Richard Curtis 1973-9-28 27 Humboldt Along R.R. tracks near mouth of Nanning Cr., across Eel River from Rio Dell Comment
  RSA46823  Melilotus albus Doris K. Kildale 1926-4-9 1739 Humboldt Samoa Road Comment
  UC1222474  Melilotus indicus Joseph P. Tracy 1943-11-28 17457 Humboldt Alton to Fortuna (on gravel bars); Eel River 15 Comment
  BLMAR735  Micropus californicus Jennifer Wheeler 2015-5-12 735 Humboldt King range, Along Telegraph Ridge btwn Oat and Spanish 670 Comment
  UC1223198  Microseris douglasii subsp. douglasii Joseph P. Tracy 1950-7-6 19001 Humboldt 2 mi s Burr Valley (on the Albee Road) 1158 Comment
  CAS-BOT-BC349238  Microseris nutans L. R. Abrams 1918-6-15 7124 Humboldt Brannan Mt near Willow Creek 1371 Comment
  HSC39233  Microseris nutans D. E. Anderson, J. P. Smith 1971-7-6 - 1275 Humboldt Horse Mtn. Comment
  RSA550828  Mimulus aurantiacus var. aurantiacus David M. Thompson 1992-6-6 1116 Humboldt 0.8 mi s of Hwy 101 interchange access road (to Trinity town) along road to Luffenholtz Beach 50 Comment
  UC1193340  Mimulus aurantiacus var. aurantiacus K. Cuff 1950-10-9 126 Humboldt 1/2 mi ne Honeydew (Quad 28A4) 152 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
  HSC75454  Mimulus breweri J. O. Sawyer 1980-7-18 3591 Humboldt North Trinity Mountain Research Natural Area, north of Mill Creek Lake to Red Cap Hole. Comment
  HSC23725  Mimulus cardinalis Tim Baroni 1971-8-1 151 Humboldt 8 mi. E of Petrolia on the Mattole River Comment
  HSC20704  Mimulus cardinalis Paul Shields 1955-8-12 Humboldt 1/2 mi. N of Miranda Comment
  HSC20706  Mimulus cardinalis David Adams 1960-8-20 Humboldt Near Eel River at Whitlow (Sequoia) 60 Comment
  HSC39160  Mimulus dentatus D. E. Anderson, J. P. Smith 1971-6-28 Humboldt Along Mad River, 2 mi. S of Blue Lake. Comment
  UCSB15934  Mimulus dentatus Breedlove, Dennis 1962-6-8 Humboldt along U.S. Highway 101; 8 miles north of Orick 60 Comment
  SEINET10570226  Mimulus floribundus Charlene A. Bennett 1976-8-6 Bennett 484 Humboldt Collected by hwy 101, n side of orick. Rocky area, densely forested by river. Comment
  HSC99435  Mimulus guttatus K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-7 84 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  BLMAR680  Mimulus guttatus Jennifer Wheeler 2013-6-25 680 Humboldt King range, Lighthouse road, just before Mattole Beach 6 Comment
  CDA41787  Mimulus guttatus E. F. Kemp 1958-4-14 s.n. Humboldt Winters Ranch, north of Bald Hills School, near Eureka. 0 Comment
  RSA454336  Mimulus guttatus Francis W. Pennell, Joseph P. Tracy 1940-7-7 26087 Humboldt Route 299. Headwaters of Willow Creek. 762 Comment
  UC582712  Mimulus inodorus Joseph P. Tracy 1935-7-24 14198 Humboldt near Ranger Station; Trinity Summit 1828 Comment
  UC582480  Mimulus inodorus Joseph P. Tracy 1923-9-16 6551 Humboldt near South Fork; Trinity River Valley 182 Comment
  HSC85939  Mimulus kelloggii Susan Carter, Eric May, Sarah McNaull 1987-3-7 7 Humboldt 8 mi. SSE of Salyer on Co. Rd. 447, F.S. Rd. 5N03, trail 6E23; E of South Fork of Trinity River 457 Comment
  UC1196796  Mimulus layneae Joseph P. Tracy 1939-7-23 16531 Humboldt Willow Creek Trinity River Valley 152 Comment
  UC582701  Mimulus microphyllus Joseph P. Tracy 1933-7-25 12855 Humboldt Grouse Mountain North Coast Ranges 1524 Comment
  HSC32564  Mimulus moschatus Thomas W. Nelson 1973-9-3 1119 Humboldt McKeown Ranch N of Dinsmore Comment
  HSC100673  Mimulus moschatus Carl C. Marshall Sep 1886 248 Humboldt Ravines, etc. Comment
  JEPS28973  Mimulus nanus var. nanus Joseph T. Gregory 1933-7-15 438 A Humboldt near MacKay Camp; South Fork Mt. 1737 Comment
  UC582596  Mimulus nanus var. nanus Joseph P. Tracy 1937-7-29 15570 Humboldt halfway between Cold Springs and Blake Lookout; Northern Coast Ranges, South Fork Mountain 1676 Comment
  HSC56054  Mimulus primuloides var. primuloides G. L. Clifton, Griswold 1979-7-31 11672 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1805 Comment
  HSC96198  Mimulus pulsiferae Kaylea Eickhoff, Cara M. Witte 2005-6-15 11 Humboldt 14.1 mi. S of Hwy. 299 on NF1, 0.25 mi. NE of Grouse Mtn. 1400 Comment
  UC147912  Mimulus pulsiferae Joseph P. Tracy 1908-6 2828 Humboldt Buck Mountain Northern Coast Ranges (nw slope, along waterway) 1219 Comment
  HSC104079  Minuartia decumbens S. Carothers 2001-6-4 Humboldt Six Rivers National Forest; Lassics Botanical Area, ridge off Rd. 1S11 1646 Comment
  UC162891  Minuartia douglasii Mrs. M. H. Manning 1901-5 21 Humboldt near Hupa Comment
  HSC45054  Minuartia douglasii R. Sutherland 1978-4-23 31 .23478 Humboldt 640 Comment
  HSC67195  Minuartia nuttallii subsp. gregaria Thomas W. Nelson, James Nelson 1980-6-10 5420 Humboldt Along road to Red Mtn., 0.5 mi. W of junction with Swayback Ridge Rd. 1372 Comment
  JEPS87058  Minuartia nuttallii subsp. gregaria Dean W. Taylor 1991-8-15 12294 Humboldt ridge 1 mi w Horse Mountain; North Coast Ranges 1493 Comment
  HSC99403  Mitella trifida var. trifida K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-6-28 52 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  HSC16011  Modiola caroliniana J. P. Tracy 1940-10-18 16777 Humboldt Trinidad 3 Comment
  HSC38487  Moehringia macrophylla D. E. Anderson, J. P. Smith 1971-7-6 - 1272 Humboldt Horse Mtn. Comment
  CAS-BOT-BC215568  Monardella odoratissima subsp. pallida Doris Kildale Gillespie 1931-6-7 10625 Humboldt South Fork Mt. Blake Lookout 1726 Comment
  HSC58126  Monardella odoratissima subsp. pallida Gilbert Muth 1979-8-1 12113 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1677 Comment
  CAS-BOT-BC220257  Monardella sheltonii Harley P. Chandler 1901-6-1 1522 Humboldt Klamath River 457 Comment
  UCD125243  Monardella sheltonii Joseph P. Tracy 1947-7-5 17782 Humboldt Trinity Summit; ridge top one mile west of Mud Springs. 1158 Comment
  LA62437  Monardella villosa Carl Epling; William Robison 1935-7-24 sn Humboldt Dyerville Comment
  UC198611 Image available Monardella villosa subsp. villosa Joseph P. Tracy 1916-9-6 4757 Humboldt Northern Coast Ranges: Grasshopper Ridge, head of Canoe Creek. Comment
  UC416723  Monardella villosa subsp. villosa P. E. Goddard 1901-7 3 Humboldt Hupa Valley Comment
  UC314640  Moneses uniflora Joseph P. Tracy 1926-5-22 7515 Humboldt Northern Coast Ranges, Prairie Creek Prairie Creek; Northern Coast Ranges, Prairie Creek 152 Comment
  CAS-BOT-BC453471  Monotropa hypopitys Doris K. Kildale 1926-6-6 2111 Humboldt Trail to Gold Bluffs Comment
  CAS-BOT-BC444803  Montia diffusa Joseph P. Tracy 1937-6-27 15379 Humboldt Four-Mile Creek (west of mouth of South Fork of Trinity). 670 Comment
  HSC98897  Montia fontana Cara Witte 2008-6-9 693 Humboldt Board Camp Butte. Forest Serivce Road 4E27. 1454 Comment
  HSC55086  Montia parvifolia G. L. Clifton, Terry Griswold 1979-7-31 11753 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa. 1845 Comment
  JEPS17216  Montia parvifolia Lincoln Constance 1934-5-31 744 Humboldt Bull Creek Flat, along Bull Creek (from w boundary of Park to Grasshopper Peak (Squaw Creek) road, n side of creek, South Fork Eel River); Bull Creek Region, South Fork Eel River, Bull Creek Comment
  HSC38339  Morella californica Peter Sorensen 1976-6-14 Humboldt N Spit of Humboldt Bay, S of Samoa Comment
  HSC90188  Morella californica Jean Hanson 1980-4-12 52 Humboldt Indian (Gunther) Island, Humboldt Bay, W end of island Comment
  CAS-BOT-BC260573  Muhlenbergia filiformis Joseph P. Tracy 1932-7-14 10544 Humboldt Klamath Mountains. At Corral Prairie 1524 Comment
  HSC58649  Muhlenbergia filiformis G. L. Clifton, Griswold 1979-7-31 11677 Humboldt Near the Trinity Summit Guard Station, close to the town of Hoopa. 1804 Comment
  UCD86712  Muhlenbergia filiformis R. Tofsrud 1948-9-1 s.n. Humboldt Road between Horse Mt. and Grouse Mt. 1371 Comment
  UC1222233  Myosotis discolor Joseph P. Tracy 1942-6-15 17116 Humboldt Englewood Prairie Comment
  UC552838  Myosotis discolor Joseph P. Tracy 1935-5-25 13847 Humboldt Fort Seward North Coast Ranges, Fort Seward 106 Comment
  UCR179282  Myosotis latifolia R. G. Swinney 1968-3-29 239 Humboldt East of Humboldt State College, Arcata 152 Comment
  JEPS30068  Myrica californica Joseph P. Tracy 1931-4-12 9332 Humboldt Dows Prairie Northern Coast Ranges, Dows Prairie 60 Comment
  UC1197940  Myrica californica Joseph P. Tracy 1931-3-26 9291 Humboldt along Van Duzen R. Alton; North Coast Ranges, , Van Duzen R. 30 Comment
  UC722454  Myrica californica C. L. Hitchcock 1939-7-14 5437 a Humboldt bluffs facing sea at Shelter Cove Comment
  SEINET6671220 Image available Myrica californica Joseph P. Tracy 1931-1 9332 Humboldt Dows Prairie Comment
  UCD87899  Nassella lepida A. H. Murphy 1951-5-18 43 Humboldt along road, 2.5 mi. northwest of Petrolia. Comment
  UC1152040  Nassella pulchra A. H. Murphy 1951-3-30 Humboldt along roadside near Mattole River Grange Hall; Mattole Valley Comment
  HSC100457  Nasturtium curvisiliqua Carl C. Marshall May 1885 45 Humboldt Peninsula near marsh. Comment
  HSC6874  Nasturtium officinale R. L. Jarvis 1962-4-17 17 Humboldt 0.5 mi. S of Bayside turnoff on Old Arcata Rd. 15 Comment
  HSC102509  Navarretia capillaris M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-28 1494 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1106 Comment
  JEPS70296  Navarretia divaricata Joseph P. Tracy 1930-7-23 9119 Humboldt Horse Mountain Northern Coast Ranges 1432 Comment
  JEPS70319  Navarretia intertexta Joseph P. Tracy 1898-7-14 91 Humboldt near Hydesville Comment
  UC33918  Navarretia intertexta Joseph Burtt Davy and Walter C. Blasdale 1899-6-19 5674 C Humboldt Hoopa Mt. North Coast Ranges Comment
  UC60864  Navarretia intertexta Mrs. M. H. Manning Apr 1901 Humboldt Hupa Comment
  UCD48510  Navarretia leucocephala Joseph P. Tracy 1928-6-24 8476 Humboldt East Ranch, between middle and North Yager Creeks. 762 Comment
  UC1197902  Navarretia linearifolia subsp. linearifolia Joseph P. Tracy 1908-6 2931 Humboldt opposite Buck Mountain (Valley of Van Duzen River); Northern Coast Ranges, Valley of Van Duzen River 304 Comment
  UC162571  Navarretia linearifolia subsp. linearifolia Joseph P. Tracy 1911-7-6 3365 Humboldt Mountain Slopes along road between Three Creeks and mouth Willow Creek; Northern Coast Ranges, btw Three Creeks and Willow Creek 762 Comment
  UC1198527  Navarretia squarrosa Joseph P. Tracy 1927-8-7 8328 Humboldt Willow Creek Trinity River Valley 152 Comment
  HSC43175  Navarretia squarrosa R. Sutherland 1976-8-13 16 .13876 Humboldt Redwood Creek, Whittemore Grove. 87 Comment
  POM64955  Navarretia viscidula Joseph P. Tracy 1916-6-20 4732 Humboldt Alder Point, Northern Coast Ranges 152 Comment
  SEINET10873102  Nemacladus capillaris Tracy 1908-6-27 TRACY 2842 Humboldt Northwest slope of Buck Mountain 1219 Comment
  HSC71063  Nemophila menziesii Thomas W. Nelson, Jane P. Nelson 1977-5-30 3397 Humboldt McKeown Ranch; along road to Anderson's Ford 854 Comment
  HSC100497  Nemophila menziesii Carl C. Marshall Jul 1887 86 Humboldt In the hills everywhere. Comment
  BLMAR172  Nemophila pedunculata Donald Hazlett 1994-6-7 172 Humboldt King range, near horse Mt. Ridge rd 670 Comment
  JEPS12382  Nicotiana quadrivalvis Lincoln Constance 1934-6-18 896 Humboldt border North Dyerville Flat (near South Fork Railroad Station and P.O.); South Fork Eel River, Bull Creek Region Comment
  CAS-BOT-BC60564  Noccaea fendleri subsp. glauca Lincoln Constance; Reed C. Rollins 1942-5-12 2887 Humboldt Klamath-Siskiyou Region. Klamath River 7 miles northeast of Weitchpec. 121 Comment
  HSC98107  Noccaea fendleri subsp. glauca Cara Witte 2007-6-20 314 Humboldt Forest Service Road 5N09. 1/4 mile east of intersection with National Forest 1. 1394 Comment
  UCD110212  Notholithocarpus densiflorus Joseph P. Tracy 1948-9-20 18224 Humboldt Willow Creek Canyon, along Trinity Highway. 457 Comment
  CHSC35519  Oemleria cerasiformis Thomas Nelson 1976-3-22 2276 Humboldt On hillside beside Eureka Muni. Golf Course. Comment
  UC154099  Oenanthe sarmentosa Joseph P. Tracy 1909-9-19 3088 Humboldt near Samoa (Humboldt Bay Region); Humboldt Bay Region 0 Comment
  CAS-BOT-BC436010  Oenanthe sarmentosa W. R. Dudley 1899-6-21 s.n. Humboldt Near Scotia Comment
  CHSC70155  Oenothera glazioviana David K. Imper 1983-7-1 Humboldt Eureka. Weedlot on 6th Street. 15 Comment
  POM271859  Oenothera glazioviana Lyman Benson 1928-7-10 428 Humboldt Clam Beach, Trinidad 46 Comment
  HSC92702  Oenothera wolfii D. K. Imper 1986-9-1 Humboldt 1 mi. S of Clam Beach exit, Hwy. 101, 6 mi. S of Trinidad 12 Comment
  CAS-BOT-BC349969  Oreostemma alpigenum var. andersonii Doris K. Kildale 1925-8-16 1195 Humboldt Trinity Summit 1828 Comment
  HSC100380  Orobanche uniflora J. McRae 2010-6-23 Humboldt Swim Ridge (Black Rock Mountain West), off Ruth Rd. (CR 504) and F.S. Rd. 27N02. 1329 Comment
  HSC54021  Orthilia secunda Griswold, Butler 1979-7-12 7180 Humboldt Near Groves Prairie, close to the town of Willow Creek. 1256 Comment
  UCD117696  Orthilia secunda D. C. Hagar 1957-7-25 L 15 Humboldt Mill Creek, 7.5 miles east-northeast of Hoopa. 1402 Comment
  JEPS26161  Orthocarpus imbricatus E. Ethel Tracy 1919-8-1 Humboldt Trinity Summit; Northern Coast Ranges, Trinity Summit 1524 Comment
  JEPS9402  Orthocarpus imbricatus Joseph P. Tracy 1932-7-11 10416 Humboldt Trinity Summit , open places at Corral Prairie (open places at Corral Prairie) 1584 Comment
  HSC100940  Orthocarpus pusillus Miss Handy Jun 1886 340 Humboldt Maple Cr. Comment
  SEINET3111140  Osmaronia cerasiformis Steve Selva, Roger Jensen 1974-8-28 93 Humboldt Humboldt State University Freshwater Forest. Comment
  UC642234  Osmorhiza berteroi Joseph P. Tracy 1932-7-12 10450 Humboldt near Corral Prairie; Trinity Summit 1584 Comment
  HSC56091  Osmorhiza occidentalis G. L. Clifton, Terry Griswold 1979-7-31 11784 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa. 1845 Comment
  UC1197130  Osmorhiza occidentalis Joseph P. Tracy 1936-6-17 14948 1/2 Humboldt Buck Mountain Northern Coast Ranges (lower foothills, on nw slope) 762 Comment
  CHSC23900  Oxalis oregana D. G. Houston 1966-3-5 7 Humboldt Six miles up Fickle Hill Rd. 609 Comment
  CSUSB850  Oxalis oregana Keith Thompson 1972-3-27 Humboldt Maple Cr. 853 Comment
  HSC16703  Oxalis oregana D. E. Anderson 1961-8-11 1726 Humboldt E of Humboldt State University campus 30 Comment
  HSC16704  Oxalis oregana Francis Winter 1960-4-23 Humboldt 1 mi. E of Korbel 30 Comment
  RSA55090  Oxalis oregana R. Kent Beattie 1920-9-20 5921 Humboldt Strongs Station on Van Duzen Fork of Eel River Comment
  POM87947  Oxalis rubra L. R. Abrams 1922-6-25 8263 Humboldt Between Trinidad and Big Lagoon Comment
  UC1196179  Paeonia brownii Joseph P. Tracy 1913-6-16 4146 Humboldt opposite Buck Mountain; Northern Coast Ranges, valley of Van Duzen River, Dinsmore's 762 Comment
  CAS-BOT-BC253707  Panicum capillare Doris K. Kildale 1925-9-7 1304 Humboldt Mouth of Dillon Creek on the Klamath River Comment
  RSA10050  Panicum capillare Joseph P. Tracy 1930-10-12 9207 Humboldt Eel River, Alton to Fortuna Comment
Read comments
Oct 2 2011
  RSA624795  Parapholis incurva Gordon Leppig, Sylvia Leppig, Kai Neander 1998-5-25 788 Humboldt Big Lagoon State Park. 2 Comment
  HSC72425  Parentucellia viscosa J. P. Smith 1970-6-7 3812 Humboldt 0.6 mi. N of Luffenholtz Beach, along Hwy. 101, near Trinidad. Comment
  SEINET10810981  Parentucellia viscosa J. Richard Abbott, B. S. Carlsward 1999-7-7 Abbott 13017 Humboldt North of McKinleyville on U.S. 101 (a few kilometers north of Eureka), on northbound off-ramp (southbound labelled as Route 101 Business) leading to Clam Beach County Park. Comment
  UC1145169  Paspalum distichum Joseph P. Tracy 1939-10-6 16505 Humboldt w of Sunset Cemetary Eureka (Eureka) 6 Comment
  UC1222163  Paxistima myrsinites Joseph P. Tracy 1950-6-15 18822 Humboldt 7 mi. n. Harris (at Huestis Rock, n.e. side of Mail Ridge); Mail Ridge Comment
  UC1000449  Pedicularis densiflora Joseph P. Tracy 1942-5-16 17351 Humboldt Garberville 304 Comment
  UC1713517  Pedicularis densiflora W. W. Price 1890-7-6 Humboldt Mad River Comment
  SEINET10548991  Pedicularis densiflora subsp. densiflora Jones 1985-4-20 Jones 21 A Humboldt T34n,r6e,sec.21. Burnt ranch campground, shasta-trinity ntl. Froest. Found at Entrance to campground 433 Comment
  UCR209002  Pellaea mucronata Thomas W. Nelson, James Nelson 1976-5-30 2612 Humboldt North Coast Range, McKeowan Ranch north of Dinsmore Comment
  UC41734  Penstemon anguineus Chesnut and Drew 1888-7-21 Humboldt S. Fork Mt. Comment
  UC585633  Penstemon laetus var. sagittatus Joseph P. Tracy 1937-7-24 15513 Humboldt 2 mi se Devil's Hole; Trinity Summit, se of Devil's Hole 1584 Comment
  HSC55750  Penstemon newberryi subsp. berryi G. L. Clifton, Terry Griswold 1979-7-26 10282 Humboldt Near Salmon Mtn., close to the town of Forks of Salmon 1935 Comment
  RSA517741  Penstemon newberryi subsp. berryi W. K. Parks 1933-07 s.n. Humboldt South Fork Mountain. Comment
  CAS-BOT-BC71619  Pentagramma triangularis subsp. triangularis Ira L. Wiggins 1957-6-21 14139 Humboldt E side of road, 1 mi. S of Garberville Comment
  UC906651  Perideridia gairdneri subsp. borealis Joseph P. Tracy 1947-8-24 17894 Humboldt Box Camp Trinity Summit 1463 Comment
  JEPS22585  Perideridia gairdneri subsp. gairdneri Joseph P. Tracy 1941-8-24 17038 Humboldt near McKay Camp; South Fork Mountain 1676 Comment
  JEPS14224  Perideridia howellii Joseph P. Tracy 1930-10-26 9237 Humboldt Valley of South Yager Creek 762 Comment
  HSC99093  Perideridia oregana Cara Witte 2007-7-8 447 Humboldt Board Camp Mountain. Trail 4E28. 1496 Comment
  HSC98799  Perideridia oregana Cara Witte 2007-7-11 511 Humboldt National Forest 1. Approximately 1 mile south of intersection with 5N01. Near Spike Buck Mountain. 1591 Comment
  HSC70535  Perideridia parishii subsp. latifolia Gail Newton 1980-7-20 1643 Humboldt Near Bell Swamps 1426 Comment
  RSA183572  Petasites palmatus R. I. Bonn 1965-3-5 4 Humboldt 4 miles west of Arcata on Samoa Road. Comment
  UC673184  Phacelia bolanderi Lincoln Constance and Reed C. Rollins 1942-5-12 2892 Humboldt 2 mi n Orleans; Klamath-Siskiyou Region, Klamath River 121 Comment
  SEINET3119233 Image available Phacelia bolanderi Bassett Maguire, Ruth Maguire, C. B. Maguire 1934-6-8 15225 Humboldt Bolling Grove State Park. Comment
  UC1199105  Phacelia egena Joseph P. Tracy 1938-5-1 15735 Humboldt Willow Creek Trinity River Valley (stony flat along river) 152 Comment
  UC175732  Phacelia egena Joseph P. Tracy 1913-6-13 4112 Humboldt opposite Buck Mountain; Northern Coast Ranges, valley of Van Duzen River 762 Comment
  UC562572  Phacelia heterophylla subsp. virgata Joseph P. Tracy 1935-7-30 14385 Humboldt near top Salmon Summit 2103 Comment
  JEPS1201  Phacelia malvifolia Joseph P. Tracy 1927-6-8 8118 Humboldt TRINIDAD Comment
  HSC58116  Phacelia mutabilis G. L. Clifton, Griswold 1979-8-1 12077 Humboldt Near N Trinity Mtn., close to the town of Hoopa 1799 Comment
  RSA134090  Phacelia nemoralis subsp. oregonensis L. R. Heckard 1952-5-13 275 Humboldt Above the South Fork of the Eel River, about w miles S of the Humboldt County line. Redwood and Madrone area along U.S. 101. Comment
  CAS-BOT-BC258865  Phalaris aquatica John Thomas Howell 1937-7-31 3731 Humboldt 4 miles north of Loleta Comment
  HSC40205  Phalaris aquatica Thomas W. Nelson, James Nelson 1976-6-22 2843 Humboldt Along Hwy. 36, ~ 4 mi. E of Bridgeville Comment
  CAS-BOT-BC258964  Phalaris californica John Thomas Howell 1937-7-31 13718 Humboldt Between Redwood Creek and Korbel Comment
  HSC70653  Phlox adsurgens Gail Newton 1980-7-14 1528 Humboldt Near Deadman Ridge 1097 Comment
  JEPS69950  Phlox diffusa W. L. Jepson 1902-7-16 2051 Humboldt Trinity Summit 2133 Comment
  CAS-BOT-BC140583  Physocarpus capitatus L. R. Abrams 1918-6-15 7129 Humboldt Brannan Mt near Willow Creek Comment
  CAS-BOT-BC73445  Picea sitchensis Carl B. Wolf 1930-10-28 1037 Humboldt 5 miles south of Ferndale on road to Petrolia. 152 Comment
  UC535712  Picea sitchensis Eleanor Armstrong 1934-7-31 1145 a Humboldt Patricks Point 30 Comment
  HSC41332  Pinus attenuata Brad Klipfel 1974-9-17 571 Humboldt Horse Mtn. Comment
  HSC70580  Pinus attenuata Gail Newton 1980-7-24 1775 Humboldt Near Somes Mtn. 1615 Comment
  CAS-BOT-BC78373  Pinus contorta H. E. Parks 1931-5-1 s.n. Humboldt Samoa, Pine Barrens Comment
  CAS-BOT-BC78377  Pinus contorta Ira L. Wiggins 1930-6-25 4620 Humboldt 2 miles north of Samoa Comment
  RSA46681  Pinus contorta var. contorta Doris K. Kildale 1937-8-12 15084 B Humboldt South Fork Mountain. Comment
Read comments
Jun 21 2012
  CAS-BOT-BC79030  Pinus ponderosa Doris K. Kildale 1927-12-1 4199 Humboldt Klamath River at Orleans Comment
  HSC1537  Pinus ponderosa Francis Winter 1960-5-7 Humboldt Sugar Pine Mtn. 6 mi. W of Hoopa Indian Reservation 1067 Comment
  UC55660  Pinus ponderosa P. E. Goddard 1901-7-10 51 Humboldt ona Hupa (<currently spelled Hoopa as a place name>) Comment
  UC1222185  Piperia unalascensis Joseph P. Tracy 1950-6-15 18819 Humboldt 7 mi n Harris (at Huestis Rock, on ne side of Mail Ridge); Mail Ridge, Huestis Rock 822 Comment
  UC16264  Pisum sativum Joseph Burtt Davy and Walter C. Blasdale 1899-6-18 5607 Humboldt Blue Lakes Comment
  UC54753  Plagiobothrys nothofulvus Joseph Burtt Davy and Walter C. Blasdale 1899-6-7 5386 Humboldt ridge near Harris; North Coast Ranges Comment
  UC1239622  Plagiobothrys nothofulvus Joseph P. Tracy 1937-5-16 15284 Humboldt summit ridge (Harris); Harris 914 Comment
  UC526808  Plagiobothrys nothofulvus Joseph P. Tracy 1925-5-30 7045 Humboldt McClellan Mountain Northern Coast Ranges 822 Comment
  UC1222216  Plagiobothrys reticulatus Joseph P. Tracy 1946-5-30 17541 Humboldt open flat by old Strong's District School House (5 mi e of town, Carlotta, Riverside Park); Carlotta, Riverside Park 60 Comment
  JEPS60975  Plagiobothrys reticulatus var. reticulatus Joseph P. Tracy 1935-5-30 13916 Humboldt Willow Creek Trinity River Valley 152 Comment
  UC526825  Plagiobothrys reticulatus var. reticulatus Joseph P. Tracy 1932-6-26 10274 Humboldt Fort Baker Ranch North Coast Ranges, Fort Baker Ranch 762 Comment
  HSC26450  Plantago maritima T. O. Osborne 1970-6-6 12 Humboldt Sugarloaf Rock, Cape Mendocino Comment
  POM312368  Plantago maritima Malcolm A. Nobs, S. Galen Smith 1949-8-3 1205 Humboldt 2 miles north of Eureka, bordering Humboldt Bay. Comment
  HSC54704  Platanthera dilatata Overton, Butler 1979-7-26 10030 Humboldt Near White Rock Spring, close to the town of Willow Creek 1554 Comment
  HSC70504  Platanthera dilatata var. leucostachys Gail Newton 1980-7-20 1612 Humboldt Near Bell Swamps 1426 Comment
  HSC102050  Platanthera leucostachys M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-13 954 Humboldt Patterson Meadows 1555 Comment
  HSC98719  Platanthera sparsiflora Cara Witte 2008-7-1 792 Humboldt Near Grouse Mountain spring. Along Forest Service Road 5N04. 1/4 mile east of intersection with 4N70. 1583 Comment
  UC1196416  Platanthera sparsiflora Joseph P. Tracy 1926-6-27 7671 Humboldt House Mountain Northern Coast Ranges 1463 Comment
  HSC90238  Platystemon californicus Louise Watson, Jan Meninga Mar 1991 14 Humboldt Near Manilla, Mad River Slough and Dunes, NW edge of parking lot Comment
  UC1239596  Plectritis congesta Joseph P. Tracy 1935-6-23 13974 Humboldt French Camp Ridge 1066 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
  HSC44410  Plectritis macrocera R. York 1978-5-6 162 Humboldt Along Bluff Creek Rd., 4 mi. from Jct. with Hwy. 96 610 Comment
  HSC49518  Plectritis macrocera R. York 1979-4-16 232 Humboldt E of Samoa drag strip. Comment
  SJSU2519  Pleuricospora fimbriolata H. L. Buckalew 1962-6-28 Humboldt Prairie Cr, Redwoods State Park Comment
  CDA32631  Pleuropogon refractus E. C. Whitney 1971-5-28 Humboldt North of Orick 0 Comment
  HSC78623  Poa annua L. P. Janeway, K. Berg 1985-2-22 1199 Humboldt N Spit of Humboldt Bay, near boat ramp and W of Samoa Rd. 12 Comment
  UC1607849  Poa annua Harold E. Parks June 1951 Humboldt Spruce Cove Trinidad Comment
  UCD90384  Poa annua G. L. Stebbins Jr. 1942-6-2 3622 Humboldt 4 miles north of Bridgeville. Comment
  UC525629  Poa bolanderi Joseph P. Tracy Jul 16 1930-Jul 19 1930 8902 Humboldt McKay Camp South Fork Mt; Northern Coast Ranges 1676 Comment
  UC1103179  Poa confinis Joseph P. Tracy 1922-5-28 6056 Humboldt Little River Beach North Coast Ranges. Little River Beach 6 Comment
  OBI22114  Poa howellii Joseph P. Tracy 1949-6-6 18308 Humboldt Happy Camp Mtn (In Trinity Summit Range, 6 mi NE of Hawkins Bar.) Comment
  CAS-BOT-BC255848  Poa kelloggii Joseph P. Tracy 1906-5-20 2463 Humboldt Near Eureka, region about Humboldt Bay 152 Comment
  CAS-BOT-BC254282  Poa macrantha S. K. Harris 1936-6-15 3383 Humboldt Trinidad Head Comment
  CHSC10131  Poa pratensis R. V. Papike 1962-5-25 32 Humboldt Lawns of Arcata. Along roads. 91 Comment
  UC525615  Poa pratensis subsp. pratensis Joseph P. Tracy 1926-5-9 7469 1/2 Humboldt valley s of South Yager Creek; Northern Coast Ranges 762 Comment
  HSC32621  Poa secunda subsp. secunda D. E. Anderson 1965-5-22 3728 Humboldt Hunt Ranch, 3-4 mi. N of Bridgeville. Comment
  HSC70904  Poa secunda subsp. secunda R. York 1980-5-18 598 Humboldt Near Black Mountain 792 Comment
  UC184105  Poa secunda subsp. secunda Joseph P. Tracy 1912-7-31 3916 Humboldt near summit Buck Mt; Northern Coast Ranges 1676 Comment
  UC525668  Poa secunda subsp. secunda Joseph P. Tracy 1926-5-9 7469 Humboldt valley s of Yager Creek 762 Comment
  HSC70762  Poa trivialis R. York 1980-5-17 520 Humboldt Near Le Perron Peak 792 Comment
  HSC10812  Poa unilateralis R. D. Rogers 1964-4-16 5 Humboldt Patricks Point State Park. Comment
  POM126102  Poa unilateralis Joseph P. Tracy 1910-4-24 3124 Humboldt Sand dunes of ocean beach at Humboldt Bay Comment
  UC1178965  Polemonium carneum Joseph P. Tracy 1924-5-25 6682 Humboldt Big Lagoon 3 Comment
  CDA3404  Polycarpon tetraphyllum Gordon Leppig, Sylvia Leppig 2000-12-7 1524 Humboldt 10th and I Streets, Arcata. Comment
  HSC67530  Polygala cornuta J. P. Smith, Steve Selva 1970-6-14 3841 Humboldt Along Hwy. 96 at Whitmore Creek 152 Comment
  JEPS27112  Polygala cornuta var. cornuta Joseph P. Tracy 1936-8-30 15182 Humboldt Willow Creek Trinity River Valley 152 Comment
  JEPS79956  Polygonum bolanderi Joseph P. Tracy 1921-8-21 5944 Humboldt near Willow Creek; Northern Coast Ranges, Trinity River Valley 152 Comment
  CAS-BOT-BC414463  Polygonum douglasii Joseph P. Tracy 1940-8-25 16707 Humboldt Northern Coast Ranges. High Prairie, on Bald Mountain 1066 Comment
  HSC55083  Polygonum douglasii G. L. Clifton, Griswold 1979-7-31 11747 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa. 1845 Comment
  UC175842  Polygonum douglasii Joseph P. Tracy 1912-7-31 3941 Humboldt Buck Mountain Northern Coast Ranges (near summit) 1676 Comment
  UC1713699  Polygonum douglasii subsp. douglasii Joseph P. Tracy 1919-9-18 5237 Humboldt Trinity Summit Northern Coast Ranges 1828 Comment
  UC672963  Polygonum douglasii subsp. douglasii Joseph P. Tracy 1933-8-30 13042 A Humboldt Grouse Mountain 1524 Comment
  RSA275282  Polygonum kelloggii Thomas W. Nelson, Jane P. Nelson 1978-7-2 4391 Humboldt [Unspecified] 1616 Comment
  UC672947  Polygonum minimum Joseph P. Tracy 1932-7-18 10702 Humboldt Brett Hole Trinity Summit (head) 1828 Comment
  RSA178533  Polygonum minimum Joseph P. Tracy 1950-8-8 19281 Humboldt On trail betw Box Camp and Croghon Hole. 1677 Comment
  UC1198089  Polygonum parryi Joseph P. Tracy 1929-8-18 8658 Humboldt on river opposite Buck Mountain; Northern Coast Ranges, Van Duzen River, Dinsmore's Ranch 762 Comment
  UC55512  Polygonum persicaria Mrs. M. H. Manning 1900-1 Humboldt Hoopa Comment
  CAS-BOT-BC419955  Polygonum polygaloides subsp. kelloggii Joseph P. Tracy 1930-7-17 9010 Humboldt South Fork Mountain. Near McKay Camp. 1676 Comment
  CAS-BOT-BC419956  Polygonum polygaloides subsp. kelloggii Joseph P. Tracy 1933-7-25 12868 Humboldt Grouse Mountain 1524 Comment
  UC672952  Polygonum polygaloides subsp. kelloggii Joseph P. Tracy 1933-7-25 12868 Humboldt Grouse Mountain 1524 Comment
  CDA2921  Polygonum polystachyum T. C. Fuller 1961-9-27 7042 Humboldt Highway 101 2.5 miles north of Trinidad. 0 Comment
  CAS-BOT-BC421009  Polygonum spergulariiforme Doris Kildale 1931-6-6 10872 Humboldt Gans Prairie, Orick - Weitchpec road Comment
  HSC54663  Polygonum spergulariiforme Overton, Butler 1979-7-25 9905 Humboldt Near Grouse Mtn., close to the town of Willow Creek 1646 Comment
  CAS-BOT-BC71921  Polypodium californicum Donald Branscomb 1959-2-1 s.n. Humboldt Trinidad Comment
  HSC77391  Polypodium californicum L. P. Janeway 1983-4-16 232 Humboldt Near old hwy. 299 on W side of Berry Summit 823 Comment
  HSC79433  Polypodium californicum Kenneth Clark 1981-4-5 1229 Humboldt Dead Man's Gulch 69 Comment
  UCD136880  Polypodium glycyrrhiza Linda M. Barker 1976-2-22 1313 Humboldt 3 miles west of Arcata. Comment
  CAS-BOT-BC76839  Polypodium glycyrrhiza M. S. Taylor; L. Ahart; J. Jokerst 1982-1-17 5215 Humboldt Vicinity of mouth of Flag Canyon. On top of North Table Mt., ca. 8 mi. N of Oroville. 373 Comment
  HSC39970  Polypodium glycyrrhiza Kurt Hippen, Tom Duebendorfer Humboldt Off Dowes Prairie Rd. 0.25 mi. up Strawberry Cr. Comment
  CAS-BOT-BC72087  Polypodium scouleri T. G. W. s.n. Humboldt Arcata Comment
  CHSC19517  Polypodium scouleri J. F. Knezevich 1968-5-13 429 Humboldt Collected near Arcata above Freshwater Forest. Comment
  HSC26822  Polypodium scouleri Clifton Raymond Chesbrough 1973-6-19 69 Humboldt 0.25 mi. from Harris and T St. on U St. Comment
  CAS-BOT-BC72083  Polypodium scouleri Ira L. Wiggins 1957-6-20 14133 Humboldt East side of highway, Trinidad Comment
  UC1241361  Polypodium scouleri R. J. Rodin 1961-8-10 6807 Humboldt Sequoia Park Eureka; Sequoia Park Comment
  UC906716  Polypodium scouleri Joseph P. Tracy 1942-7-26 17291 Humboldt headwater of Grizzly Creek (Redwood House road) 609 Comment
  CAS-BOT-BC233071  Polypogon interruptus Joseph P. Tracy 1927-7-16 8261 Humboldt Eureka 60 Comment
  CAS-BOT-BC233074  Polypogon interruptus Joseph P. Tracy 1927-7-16 8260 Humboldt Eureka 60 Comment
  UC183480  Polypogon interruptus Joseph P. Tracy 1912-7-26 3834 Humboldt Kneeland Prairie; Northern Coast Ranges, Kneeland Prairie 762 Comment
  UC39751  Polypogon interruptus Joseph Burtt Davy and Walter C. Blasdale 1899-6-13 5520 Humboldt near Pepperwood; near Pepperwood Comment
  UC1145085  Polypogon monspeliensis Joseph P. Tracy 1942-6-15 17144 Humboldt on South Fork of Eel River opposite Redway (Redwood Creek); South Fork of Eel River, Redwood Creek 91 Comment
  UC39746  Polypogon monspeliensis Harley P. Chandler June 1901 1431 Humboldt sandy banks Klamath River; North Coast Ranges, Klamath River 335 Comment
  HSC73875  Polystichum imbricans M. Baker 1980-7-15 2952 Humboldt Near Whiting Ridge 1341 Comment
  HSC70656  Polystichum imbricans subsp. curtum Gail Newton 1980-7-14 1533 Humboldt Near Deadman Ridge 1097 Comment
  CAS-BOT-BC76764  Polystichum imbricans subsp. imbricans Henry M. Pollard 1944-9-8 s.n. Humboldt Orleans Mt. Comment
  HSC55170  Polystichum munitum Gilbert Muth 1979-8-1 12166 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1677 Comment
  HSC99514  Polystichum munitum K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-22 177 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  UCD136543  Polystichum munitum Linda M. Barker 1976-4-30 1414 Humboldt Lanphere-Christensen Dunes, 3 miles west of Arcata. Comment
  HSC93265  Polystichum munitum Gordon Leppig 1998-3-11 716 Humboldt Redwood Park, near Jolly Giant Cr. 91 Comment
  UC492234  Populus trichocarpa Joseph P. Tracy 1932-4-24 9801 Humboldt South Fork of Eel River between Miranda and Redway; North Coast Ranges, South Fork of Eel River 91 Comment
  UC1103510  Potamogeton foliosus Joseph P. Tracy 1940-10-17 16774 Humboldt 2 to 5 mi e of South Fork (Camp Grant); Eel River 45 Comment
  POM145402  Potamogeton natans J. B. Feudge 1923-7-23 449 Humboldt Lagoon at Trinidad. 0 Comment
  UC1198265  Potamogeton natans Joseph P. Tracy 1917-5-30 4809 Humboldt near mouth of Little River; Northern Coast Ranges 6 Comment
  RSA246822  Potamogeton pusillus Robert F. Thorne 1965-9-19 35463 Humboldt Freshwater Lagoon S of Orick 3 Comment
  UC302159  Potamogeton richardsonii E. G. Pluke 1926-8-1 Humboldt w of Dows Prairie (lagoon at mouth of Widow White Creek); Widow White Creek 3 Comment
  HSC90640  Potentilla anserina subsp. pacifica Gail Newton 1982-6-10 3605 Humboldt Elk River Wildlife Area, Eureka Comment
  HSC101986  Potentilla glandulosa var. glandulosa M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-12 884 Humboldt Patterson Meadows 1566 Comment
  HSC102177  Potentilla gracilis var. fastigiata M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-3 1090 Humboldt Patterson Meadows 1555 Comment
  HSC58327  Potentilla gracilis var. fastigiata Overton, Butler 1979-8-2 12625 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  UC154515  Potentilla gracilis var. gracilis Harley P. Chandler June, 1901 1390 Humboldt Hupa Indian Reservation North Coast Ranges, , Hupa Valley (Hupa Valley) 152 Comment
  UC585628  Potentilla gracilis var. gracilis Joseph P. Tracy 1933-8-6 12929 Humboldt on Bald Hills e Orick (Tomlinson Ranch); on Bald Hills e of Orick, Tomlinson Ranch 670 Comment
  HSC61166  Prosartes hookeri T. Jimerson, J. Pageau 1979-7-31 701 Humboldt Near Whiting Ridge. Close to the town of Hyampom, CA. 1204 Comment
  HSC97913  Prosartes hookeri Cara Witte 2007-6-13 268 Humboldt Along Forest Service Rd. 5N04. Approximately 1 mile east of intersection to Grouse Mountain Lookout. 1534 Comment
  UCD139803  Prosartes hookeri Gordon Leppig 1998-6-6 845 Humboldt Arcata, Arcata Community Forest, in frisbee gold area. 91 Comment
  SBBG58724  Prosartes smithii R. Hartwell 1938-8-3 101 Humboldt near Garberville Comment
  SBBG71579  Prunella vulgaris R. Hartwell 1938-8-6 Humboldt S of Eureka Comment
  UC630493  Prunella vulgaris var. lanceolata H. E. and S. T. Parks July, 1937 24052 Humboldt Spruce Cove Trinidad; , Trinidad Comment
  POM283387  Prunella vulgaris var. lanceolata Lyman Benson 1928-7-12 404 Humboldt Weott Ranger Station; Mt.Range: Seaward N Coast; Watershed: South Fork Eel River. 61 Comment
  RSA289937  Prunella vulgaris var. lanceolata Lincoln Constance 1934-5-24 641 Humboldt Bull Creek Region, South Fork Eel River 122 Comment
  UC1196732  Prunella vulgaris var. lanceolata Joseph P. Tracy 1934-7-22 13487 Humboldt at crossing of Iaqua-Bridgeville road North Yager Creek 396 Comment
  UC205472  Prunus emarginata Joseph P. Tracy 1919-9-24 5296 Humboldt Trinity Summit; Northern Coast Ranges, Trinity Summit 1828 Comment
  CAS-BOT-BC154739  Prunus virginiana var. demissa Doris K. Kildale 1926-5-20 3240 Humboldt Bug Creek 792 Comment
  UC467868  Prunus virginiana var. demissa P. E. Goddard 1906-6 671 Humboldt Lassecks Peak (=Signal Peak) Lassecks Peak Comment
  UC666842  Prunus virginiana var. demissa Joseph P. Tracy 1933-7-16 12796 Humboldt South Fork Mountain, W slope near top, at Hyampom Trail 1676 Comment
  JEPS24541  Pseudognaphalium ramosissimum Dick Waring 1960-8-1 Humboldt in disturbed area about 2 mi n Weott; Avenue of the Giants Comment
  UC582514  Pseudognaphalium ramosissimum Joseph P. Tracy 1928-9-9 8506 Humboldt Carlotta Northern Coast Ranges, Carlotta 60 Comment
  CAS-BOT-BC357603  Pseudognaphalium stramineum Carl D. Duncan 1920-9-22 s.n. Humboldt Hoopa Valley Comment
  HSC35629  Pseudognaphalium stramineum Thomas W. Nelson, James Nelson 1975-8-5 2142 Humboldt Along south spit of Humboldt Bay ca. 1 mile N. of Table Bluff Comment
  UC582516  Pseudognaphalium thermale Joseph P. Tracy 1935-7-31 14388 Humboldt Salmon Summit 1767 Comment
  HSC40526  Pseudognaphalium thermale Thomas W. Nelson, James Nelson 1976-7-28 3060 Humboldt SW-facing outcrop along S.R. 36 ca. 4 mi. W of Dinsmore Comment
  HSC36260  Pteridium aquilinum var. pubescens John Rehling 1974-8-19 20 Humboldt Comment
  SEINET11722268  Pteridium aquilinum var. pubescens C. S. Kaut 2000-1 3 Humboldt Trinidad Comment
  UC1222157  Pyrola asarifolia Joseph P. Tracy 1951-6-24 19534 Humboldt near intersection of Butter Valley Road with Kneeland Road Comment
  HSC55275  Pyrola crypta Overton, Butler 1979-8-2 12672 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  HSC54554  Pyrola dentata Overton, Butler 1979-7-24 9560 Humboldt Near Titlow Hill, close to the town of Willow Creek 1097 Comment
  UC1326244  Pyrola picta Milo S. Baker 1947-8-10 11908 Humboldt near end of Forest Rd. from Hoopa toward Trinity Summit 1371 Comment
  CAS-BOT-BC62670  Quercus chrysolepis Doris K. Kildale 1926-9-5 2640 Humboldt on trail between Red Peaks & Signal Peak Lassiks Peaks 1706 Comment
  UC54680  Quercus chrysolepis P. E. Goddard 1901-7-13 58 Humboldt Hupa Comment
  UC249563  Quercus garryana Joseph P. Tracy 1922-4-30 6008 Humboldt near Willow Creek; Northern Coast Ranges, Trinity River Valley 152 Comment
  UC54686  Quercus garryana Joseph Burtt Davy and Walter C. Blasdale Jun 21 1899-Jun 23 1899 5854 Humboldt Trinity Summit, at lake near the top North Coast Ranges Comment
  UC1135607  Quercus garryana R. Stahelin 1933-8-20 Humboldt Liscomb Hill Eureka Quad. Comment
  HSC35715  Quercus kelloggii Thomas W. Nelson 1975-10-12 2234 Humboldt McKeown Ranch, N of Dinsmore Comment
  HSC8259  Quercus kelloggii D. E. Anderson 1961-9-30 1835 Humboldt Comment
  UCD46693  Quercus kelloggii R. N. Raynor 1935-4-15 s.n. Humboldt Fort Seward. Comment
  CAS-BOT-BC104335  Quercus sadleriana Milo S. Baker 1947-8-10 11896 Humboldt 16 mi NE of Hoopa along trail to Trinity Summit from end of forest road 1463 Comment
  RSA20796  Quercus sadleriana Carl B. Wolf 1937-8-13 9261 Humboldt North Coast Range, 12 mi. E. of Hoopa Valley on New Road toward Trinity Summit. 1677 Comment
  SEINET3823284 Image available Quercus sadleriana Joseph P. Tracy 1947-8-24 17909 Humboldt Trinity Summit, Box Camp 1524 Comment
  CAS-BOT-BC104538  Quercus vacciniifolia D. E. Breedlove 1961-7-4 648 Humboldt 7 miles W of Willow Creek on US 299 521 Comment
  UC212981  Quercus vacciniifolia Joseph P. Tracy 1919-9-23 5286 Humboldt Trinity Summit Northern Coast Ranges 1828 Comment
  UCD47467  Quercus vacciniifolia Joseph P. Tracy 1935-7-28 14336 Humboldt Trinity Summit, Head of Brett Hole. 1828 Comment
  CAS-BOT-BC186671  Ranunculus Mrs. H. C. Cantelow 1936-5-18 1388 Humboldt 8 mi. N. of Orick nr. Corkscrew Tree Comment
  HSC56056  Ranunculus alismifolius var. hartwegii G. L. Clifton, Griswold 1979-7-31 11674 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1805 Comment
  CAS-BOT-BC379175  Ranunculus aquatilis var. aquatilis Doris K. Kildale 1926-4-18 1769 Humboldt McClellan Mountain Comment
  UC1196240  Ranunculus californicus J. P. Tracy 1901-4-7 1005 Humboldt immediate vicinity of Eureka 0 Comment
  UC162341  Ranunculus muricatus Joseph P. Tracy 1911-5-17 3185 Humboldt Eureka Northern Coast Region 0 Comment
  HSC18151  Ranunculus muricatus J. R. Good 1964-5-13 47 Humboldt End of Lanphere Rd. Comment
  HSC70952  Ranunculus orthorhynchus J. M. DiTomaso 1981-5-15 2008 Humboldt Larabee Valley, 10 mi. E of Bridgeville on Hwy. 36 Comment
  UC249653  Ranunculus orthorhynchus var. orthorhynchus Joseph P. Tracy 1922-5-21 6050 Humboldt Fieldbrook Northern Coast Ranges 60 Comment
  HSC69865  Ranunculus orthorhynchus var. platyphyllus Thomas W. Nelson 1978-5-28 4089 Humboldt McKeown Ranch, N of Dinsmore 762 Comment
  RSA97039  Ranunculus parviflorus J. T. Howell 1954-4-25 29153 Humboldt Garden weed, Arcata Comment
  UCD97071  Ranunculus parviflorus John Thomas Howell 1954-4-25 29153 Humboldt Arcata. Comment
  UC1196260  Ranunculus pusillus Joseph P. Tracy 1935-5-25 13845 Humboldt Fort Seward 106 Comment
  UC1103008  Ranunculus pusillus Joseph P. Tracy 1931-5-17 9424 Humboldt opposite mouth of Willow Creek; Northern Coast Ranges, Trinity River Valley, Lack Pond 152 Comment
  POM118709  Ranunculus repens Marcus E. Jones 1924-4-26 s.n. Humboldt Scotia. Comment
  HSC100902  Ranunculus repens Carl C. Marshall 167 Humboldt No data. Comment
  CHSC35558  Ranunculus sardous Thomas Nelson; Doris Niles 1979-5-19 4696 Humboldt Mouth of Eel River at Crab Park. North of County Park. Comment
  HSC56011  Ranunculus uncinatus Gilbert Muth 1979-7-31 11494 Humboldt Near Tish Tang A Tang Creek, S Fork, close to the town of Gasquet 1417 Comment
  HSC18194  Ranunculus uncinatus var. parviflorus W. F. Nickel 1965-5-15 Humboldt 0.5 mi. E of Arcata on rd. to Arcata Reservoir Comment
  HSC38347  Raphanus raphanistrum Peter Sorensen 1976-6-14 Humboldt N Spit of Humboldt Bay Comment
  UCD115153  Raphanus raphanistrum Linda M. Barker 1976-7-5 1647 Humboldt Lanphere-Christensen Dunes, 3 miles west of Arcata. Comment
  UC165815  Rhamnus californica subsp. californica Joseph P. Tracy 1911-7-4 3292 Humboldt near mouth of Willow Creek (tributary of the Trinity River); Northern Coast Ranges, Trinity River, Willow Creek 243 Comment
  SEINET2031087 Image available Rhododendron columbianum Joseph P. Tracy 1924-1 6728 Humboldt Big Lagoon 6 Comment
  CAS-BOT-BC56609  Rhododendron macrophyllum C. B. Wolf 1931-8-29 2370 Humboldt Near summit of Orick Hill on road to Weitchpec 304 Comment
  CDA38849  Rhododendron macrophyllum A. T. Leiser 1980-7-9 s.n. Humboldt North of Orick, Hwy 101 reroute, May Creek Watershed. Comment
  SBBG5558  Rhododendron occidentale M. J. Cody 1938-7-14 Humboldt 2 mi N of Trinidad Comment
  UC162760  Rhododendron occidentale Joseph P. Tracy 1911-7-6 3340 Humboldt between Three Creeks and mouth of Willow Creek; Northern Coast Ranges 762 Comment
  UC183661  Rhododendron occidentale Joseph P. Tracy 1913-9-7 4389 Humboldt at Eureka Eureka; Northern Coast Region, Eureka 0 Comment
  UC604662  Rhododendron occidentale Joseph P. Tracy 1938-7-5 16014 Humboldt 4 mi s of Eureka (Spruce Point at junction of Humboldt Hill road with highway); Spruce Point 9 Comment
  UC1198922  Ribes binominatum Joseph P. Tracy 1949-7-19 18385 Humboldt Grouse Mountain 1524 Comment
  HSC20277  Ribes bracteosum T. W. Beck 1963-4-13 25 Humboldt Camp Bauer, Korbel, near Mad River Comment
  RSA459478  Ribes bracteosum Barbara Kelly 1977-4-23 304 Humboldt 2.5 miles South of Shelter Cove Road. South fork of Bear Creek at Wailaki Campground. 561 Comment
  HSC100491  Ribes divaricatum Carl C. Marshall Apr 1886 171 Humboldt Vicinity of Humboldt Bay. Comment
  HSC44193  Ribes lacustre Thomas W. Nelson, Jane P. Nelson 1977-6-19 3490 Humboldt 1616 Comment
  UC11582  Ribes laxiflorum Harley P. Chandler May, 1901 1202 Humboldt Humboldt Bay North Coast Ranges 30 Comment
  UCD102249  Ribes lobbii Gordon Leppig 1998-6-1 866 Humboldt Horse Mountain. Buck Flat, Titlow Hill Rd. @ Ammon Ridge Rd. 1524 Comment
  UC492233  Ribes marshallii Joseph P. Tracy 1932-7-15 10580 Humboldt ridges e Corral Prairie; Klamath Mountains, Trinity Summit 1828 Comment
  HSC20319  Ribes menziesii Doris K. Kildale 1926-3-26 1650 Humboldt Old Fortuna Rd. near junction with new Hwy. beyond Fernbridge Comment
  HSC90028  Ribes menziesii Andrew Enberg, Brad Penkala, Dan Scofield 1990-4-9 40 Humboldt Blue Lake Rd., 0.7 mi. E of its intersection with Railroad Ave. 76 Comment
  RSA0021772  Ribes menziesii Doris K. Kildale 1927-6-25 3570 Humboldt Shelter Cove. Comment
  HSC20325  Ribes roezlii J. Sandborg, F. Sandborg 1968-7-19 56 Humboldt Bluff Creek near Notice Creek 793 Comment
  HSC71225  Ribes roezlii Thomas W. Nelson 1977-4-20 3333 Humboldt Along USFS Road 1N15 at summit 915 Comment
  JEPS49190  Ribes roezlii Joseph P. Tracy 1923-3-17 6159 Humboldt Garberville Northern Coast Ranges 121 Comment
  POM160297  Ribes roezlii var. amictum Joseph P. Tracy 1923-3-17 6159 Humboldt Garberville. 122 Comment
  HSC70756  Ribes sanguineum R. York 1980-5-17 527 Humboldt Near Le Perron Peak 1066 Comment
  UC492209 Image available Ribes sanguineum Joseph P. Tracy 1927-6-12 8155 Humboldt lower slopes Horse Mountain; Northern Coast Ranges 1219 Comment
  RSA0019530  Ribes sanguineum Barbara Ertter, Thomas Delendick 1987-5-16 6939 Humboldt Ca. 3 mi. E of Berry Summit on Highway 299, ca. 20 air miles E of Arcata; on S side of road above Willow Creek. 800 Comment
  CAS-BOT-BC144679  Ribes sanguineum var. glutinosum Doris K. Kildale 1926-8-8 2479 Humboldt Dyerville, south Fork of Eel River 51 Comment
  HSC49909  Ribes sanguineum var. glutinosum Maralyn O'Meara 1973-2-9 125 Humboldt McKinleyville, N side of Mad River along N Bank Rd., 0.5 mi. E of Hwy. 101 Comment
  HSC44194  Ribes viscosissimum Thomas W. Nelson, Jane P. Nelson 1977-6-19 3489 Humboldt Along W side of road to Goat Hill 1616 Comment
  JEPS48557 Image available Ribes viscosissimum Hilda W. Grinnell 1932-7-9 6 Humboldt below McKay Camp; So. Fork Mt. Comment
  HSC63085  Romanzoffia californica David Wheeler 1979-4-25 85 Humboldt Kneeland Ridge, 5 mi. past the Kneeland Post Office on the way to the airport Comment
  POM265891  Romanzoffia californica Lincoln Constance, R. C. Rollins 1942-5-11 2879 Humboldt 3 miles east of East Fork of Willow Creek. Comment
  UC1222365  Romanzoffia californica Joseph P. Tracy 1950-6-15 18818 Humboldt at Huestis Rock on n.e. side Mail Ridge Comment
  HSC45604  Romanzoffia californica Diane L. Reed 1978-5-7 69 Humboldt E fork of Willow Creek, 34 mi. from US 101 on state Hwy. 299 Comment
  UC1199220  Rorippa curvisiliqua Joseph P. Tracy 1933-8-30 13054 Humboldt Grouse Mountain North Coast Ranges, Grouse Mountain 1524 Comment
  UC183622  Rorippa curvisiliqua Joseph P. Tracy 1913-6-20 4220 Humboldt Dinsmore's Ranch opposite Buck Mountain (in valley of Van Duzen River); Northern Coast Ranges, in valley Van Duzen River, Buck Mt 762 Comment
  CAS-BOT-BC147437  Rosa californica Joseph P. Tracy 1941-6-29 16965 Humboldt Buck Mountain 762 Comment
  HSC99513  Rosa canina K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-22 176 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  CAS-BOT-BC146489  Rosa gymnocarpa Doris Kildale Gillespie 1931-6-7 10623 Humboldt South Fork Mt., Blake Lookout 1726 Comment
  CAS-BOT-BC146492  Rosa gymnocarpa L. B. Kildale 1930-9-9 10402 Humboldt Bald Mountain 914 Comment
  HSC44327  Rosa gymnocarpa Brad Klipfel 1975-6-17 667 Humboldt Horse Mtn. Comment
  SEINET200819  Rosa gymnocarpa Joseph P. Tracy 1911-7-7 3428 Humboldt Brannan Mountain ,viz. Ridge north of Willow Creek, between Willow and Campbell Creeks, near the summit 1219 Comment
  UC492160  Rosa gymnocarpa Joseph P. Tracy 1932-7-13 10493 Humboldt near Corral Prairie; Klamath Mountains, Trinity Summit 1524 Comment
  UC14149  Rosa nutkana var. nutkana E. Ethel Tracy 1901-9-5 1278 Humboldt Eureka Comment
  UC154204  Rosa nutkana var. nutkana J. P. Tracy 1901-6-23 1162 Humboldt immediate vicinity of Eureka 0 Comment
  UC180188  Rosa nutkana var. nutkana Joseph P. Tracy 1914-5-30 4479 Humboldt Alton Northern Coast Region (same locality as Tracy #40000) 30 Comment
  UC902158  Rosa pisocarpa Joseph P. Tracy 1947-7-4 17813 Humboldt near Box Camp; Trinity Summit 1524 Comment
  UC673070  Rubus Joseph P. Tracy 1940-10-17 16762 Humboldt near Dyerville (South Fork Station); South Fork Station (near Dyerville) 48 Comment
  UCD113775  Rubus armeniacus K. Twitchell 1996-5-11 27 Humboldt Crannell, along old Highway 101 at Moonstone Beach access. 36 Comment
  UC902131  Rubus leucodermis Joseph P. Tracy 1947-8-24 17911 Humboldt near Box Camp; Trinity Summit 1524 Comment
  HSC22040  Rubus parviflorus B. D. Rogers, D. E. Anderson 1965-5-1 514 Humboldt 4 mi. SE of Arcata along Jacoby Creek Comment
  HSC79508  Rubus parviflorus Kenneth Clark 1980-4-18 589 Humboldt Shelter Cove. On lower alluvial terrace of Dead Man's Gulch 24 Comment
  RSA523867  Rubus parviflorus G. H. True 1936-5-12 473 Humboldt 5 miles S of Kneeland. 457 Comment
  HSC19685  Rubus spectabilis Francis Winter 1960-3-26 Humboldt Samoa Peninsula 6 mi. W of Arcata Comment
  HSC31034  Rubus spectabilis G. D. Wallace, Larry E. DeBuhr 1972-3-29 1010 Humboldt Prairie Creek Redwoods State Park in campground Comment
  HSC34808  Rubus ursinus David Peters 1975-4-9 5 Humboldt .1 mi. E of Kirkpatrick Quarry Rd. on Jacoby Cr. Rd. Comment
  CAS-BOT-BC363202  Rudbeckia occidentalis Carl B. Wolf 1937-8-13 9250 Humboldt North Coast Range, 11 mi. E. of Hoopa Valley on new road towards Trinity Summit 1524 Comment
  HSC48763  Rumex acetosella Brad Klipfel 1973-6-10 99 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC17567  Rumex acetosella J. W. Johnson 1961-8-17 1039 Humboldt Arcata, W.M. Lanphere Farm, Samoa Peninsula. Comment
  HSC32426  Rumex acetosella Linda M. Barker 1974-5-11 171 Humboldt Redwood National Park, Bald Hills Rd., Gans Prairie 549 Comment
  UCD100941  Rumex fueginus W. L. Jepson 1921-8-7 9329 Humboldt Stone Lagoon. Humboldt Coast. Comment
  CAS-BOT-BC433648  Rumex obtusifolius Alice Eastwood 1921-7-21 10656 Humboldt Carlotta Comment
  JEPS39873  Rumex occidentalis Milo S. Baker 1923-8-4 177 Humboldt s end Stone Lagoon Comment
  CAS-BOT-BC433754  Rumex pulcher W. R. Dudley 1899-1-1 s.n. Humboldt Arcata Comment
  UCD92330  Rytidosperma R. Tofsrud 1946-11-1 33 Humboldt Humboldt County. Comment
  HSC90251  Salicornia depressa Jean Hanson 1980-8-28 112 Humboldt Indian (Gunther) Island in Humboldt Bay, Eureka, across from Coast Guard Station within 30 ft. of high tide line Comment
  SD37464  Salix Edith A. Purer 1932-7-30 4677 Humboldt S of Orick, sand dunes Comment
  CAS-BOT-BC129888  Salix bonplandiana Mrs. H. P. Bracelin 1931-5-1 271 Humboldt Sylvandale, between Miranda and Meyers, South Fork of Eel River Comment
  CAS-BOT-BC103809  Salix exigua Joseph P. Tracy 1932-4-17 9798 Humboldt Eel River, Alton to Fortuna 15 Comment
  POM220141  Salix exigua H. E. Parks, Joseph P. Tracy 1931-5-17 975 Humboldt Mouth of Willow Creek at Trinity River. 150 Comment
  HSC19946  Salix exigua var. hindsiana C. R. Ball, H. E. Parks, J. P. Tracy 1932-5-17 1332 Humboldt Trinity River, near bridge on Trinity Hwy. 152 Comment
  UC469442  Salix exigua var. hindsiana Joseph P. Tracy 1931-9-19 9673 Humboldt Van Duzen R. Alton; Northern Coast Region 30 Comment
  UC511979  Salix exigua var. hindsiana Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-12 1248 Humboldt floodplain of Eel R. at Fernbridge Comment
  UC512020  Salix exigua var. hindsiana C. R. Ball, H. E. Parks, and J. P. Tracy 1932-5-17 1337 Humboldt at Willow Creek (Graham Ranch) near its junction with Trinity R. 152 Comment
  CAS-BOT-BC106849  Salix hookeriana Harold E. Parks 1931-5-12 0955 Humboldt Samoa, Humboldt Bay Comment
  CHSC9658  Salix hookeriana E. L. Smith 1971-8-17 1028 Humboldt Between highway and beach at Trinidad. Comment
  HSC19967  Salix hookeriana J. R. Woodside 1963-2-17 45 Humboldt 1.25 mi. N of Fairhaven Comment
  JEPS12962  Salix hookeriana Joseph P. Tracy 1931-8-23 9619 Humboldt sand dunes near Samoa; Northern Coast Region, Humboldt Bay 6 Comment
  POM219354  Salix hookeriana Joseph P. Tracy 1931-4-4 9330 Humboldt Near Samoa. On Humboldt Bay. 6 Comment
  SD938  Salix hookeriana Harold E. Parks 1931-5-28 1000 Humboldt Little River Lagoon 0 Comment
  UC1225776  Salix hookeriana Joseph P. Tracy 1948-4-4 17959 Humboldt sand dunes near Samoa; Humboldt Bay 6 Comment
  UC1225922  Salix hookeriana Joseph P. Tracy 1947-7-2 17758 Humboldt 6 mi s.e. Arcata (Fickle Hill); Fickle Hill 609 Comment
  UC1356324  Salix hookeriana Theodore J. Crovello 1965-4-8 676 Humboldt along Somoa Rd about 200 ft n Samoa Club Comment
  UC469118  Salix hookeriana Joseph P. Tracy 1931-9-20 9686 Humboldt Little River Northern Coast Ranges (mouth, edge of sand dunes) 6 Comment
  UC469128  Salix hookeriana Joseph P. Tracy 1931-4-4 9330 Humboldt sand dunes near Samoa; Northern Coast Region, Humboldt Bay 6 Comment
  UC470435  Salix hookeriana Joseph P. Tracy 1931-10-18 9742 Humboldt Camp Grant Northern Coast Ranges, Eel River 60 Comment
  UC470439  Salix hookeriana Joseph P. Tracy 1931-9-19 9679 Humboldt Alton Northern Coast Region, Alton 30 Comment
  UC481395  Salix hookeriana Harold E. Parks 1931-3-24 914 Humboldt Fortuna Eel River (bank of river) 10 Comment
  UC490465  Salix hookeriana Joseph P. Tracy 1932-9-10 10767 Humboldt Mattole R. near Petrolia; North Coast Region, Mattole R. 15 Comment
  UC504053  Salix hookeriana Jim Davis Apr 25 1933-Apr 27 1933 5 Humboldt around Eureka Comment
  UC504054  Salix hookeriana Jim Davis Apr 25 1933-Apr 27 1933 4 Humboldt around Eureka Eureka Comment
  UC504062  Salix hookeriana Jim Davis Apr 25 1933-Apr 27 1933 8 Humboldt Samoa Comment
  UC511975  Salix hookeriana Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-13 1250 Humboldt 2 mi e of Redwood Hwy. Engelhart gravel pit (above Blue Lake Rd.); Mad River Comment
  SJSU262  Salix laevigata Mrs. H. P. Bracelin 1931-4-1 272 Humboldt Sylvandale between Miranda & Meyers, S Fork Eel R Comment
  LA208815  Salix lasiandra Harold E. Parks; 1931-3-24 911 Humboldt Fortuna, on banks of Eel River 10.0 Comment
  UC1225918  Salix lasiandra subsp. lasiandra Joseph P. Tracy 1947-8-24 17896 Humboldt meadow at Box Camp Box Camp; Trinity Summit 1463 Comment
  UC504056  Salix lasiandra subsp. lasiandra Jim Davis Apr 25 1933-Apr 27 1933 3 Humboldt around Eureka Eureka Comment
  JEPS14790  Salix lasiandra var. lasiandra Joseph P. Tracy 1933-7-16 12772 Humboldt at McKay Camp S. Fork Mt.; Northern Coast Ranges 1676 Comment
  CAS-BOT-BC107580  Salix lasiolepis Joseph P. Tracy; Carleton R. Ball; Harold E. Parks 1932-5-13 1254 Humboldt Floodplain of Mad River at Engelhart gravel pit, 2 miles east of Redwood Highway and above Blue Lake Road Comment
  CAS-BOT-BC107607  Salix lasiolepis Joseph P. Tracy; Harold E. Parks; Carleton R. Ball 1932-5-17 1323 Humboldt On west slpe of Berry's Mountain, east of Redwood Creek, on Trinity Highway 762 Comment
  HSC20002  Salix lasiolepis J. P. Tracy 1933-3-19 10931 Humboldt Blue Slide, Van Duzen River 91 Comment
  HSC20011  Salix lasiolepis J. P. Tracy 1933-5-14 12184 Humboldt Berry's Mt. on Trinity Hwy. 762 Comment
  UC1222297  Salix lasiolepis Joseph P. Tracy 1950-7-25 19049 Humboldt along Van Duzen R. opposite Buck Mt.; Van Duzen R. 762 Comment
  UC176177  Salix lasiolepis Joseph P. Tracy 1912-7-26 3840 Humboldt Kneeland Prairie, Lawrence Creek Northern Coast Ranges, Kneeland Prairie, Lawrence Creek 762 Comment
  UC481315  Salix lasiolepis H. E. Parks and Joseph P. Tracy 1931-5-17 976 Humboldt mouth of Willow Creek at Trinity River 150 Comment
  UC495609  Salix lasiolepis Joseph P. Tracy 1932-10-12 10877 Humboldt bank <of> S. Fork Eel R. Miranda; Northern Coast Ranges, S. Fork Eel R., Miranda 121 Comment
  UC504021  Salix lasiolepis Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-13 1254 Humboldt 2 mi E of Redwood Highway ( Mad River at Engelhart gravel pit, above Blue Lake) Comment
  UC506399  Salix lasiolepis Joseph P. Tracy 1932-8-21 10359 Humboldt Three Cabins Northern Coast Ranges, Chaparral Mountain (lower western foothills of mt.) 457 Comment
  UC526717  Salix lasiolepis Joseph P. Tracy 1934-7-9 13356 Humboldt Dobbyn Creek Northern Coast Ranges, Dobbyn Creek 152 Comment
  CDA23002  Salix lasiolepis var. bigelovii Haggal 1994-6-7 s.n. Humboldt Arcata. 0 Comment
  JEPS12942  Salix melanopsis Joseph P. Tracy 1931-6-14 9582 Humboldt Van Duzen River Alton; Northern Coast Region 30 Comment
  SBBG57955  Salix melanopsis H. E. Parks 1931-5-14 961 Humboldt Van Duzen River between Alton and Carlotta 15 Comment
  UC470452  Salix melanopsis Joseph P. Tracy 1931-9-7 9646 Humboldt Trinity R. Valley at Willow Creek; Northern Coast Ranges, Trinity R. Valley, Willow Creek 152 Comment
  UC490568  Salix melanopsis Joseph P. Tracy 1932-7-31 10291 Humboldt Eel R. at mouth of Larrabee Creek; Northern Coast Ranges, Eel R. 60 Comment
  UC511988  Salix melanopsis Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-12 1245 Humboldt Van Duzen R. at Blue Slide; Van Duzen R. 91 Comment
  CAS-BOT-BC129156  Salix scouleriana Doris K. Kildale 1926-11-26 2836 Humboldt Pine's Pasture - Eureka Comment
  CAS-BOT-BC129168  Salix scouleriana Joseph P. Tracy 1932-7-13 10507 Humboldt Open ground at Corral Prairie 1524 Comment
  HSC38144  Salix scouleriana Thomas W. Nelson, James Nelson 1976-3-23 3278 Humboldt Eureka, E side of F St., 3800 block Comment
  JEPS13084  Salix scouleriana Joseph P. Tracy 1936-2-2 14767 Humboldt vicinity of Carlotta 30 Comment
  POM219695  Salix scouleriana H. E. Parks 1931-5-14 957 Humboldt Little Larabee Bridge. Van Duzen River. 450 Comment
  UC1196700  Salix scouleriana Joseph P. Tracy 1912-2-25 3558 Humboldt at Eureka Northern Coast Region, Eureka 0 Comment
  UC490529  Salix scouleriana Joseph P. Tracy 1932-7-13 10507 Humboldt open groung at Corral Prairie (back from the meadows); Klamath Mts., Trinity Summit, Corral Prairie 1524 Comment
  CAS-BOT-BC128955  Salix sitchensis Harold E. Parks 1931-3-26 908 Humboldt Alton, on Van Duzen River 15 Comment
  HSC36284  Salix sitchensis R. W. Becking, Thomas Overturf 1975-6-26 705 Humboldt Mad River, 1 mi. S of Blue Lake 21 Comment
  HSC43419  Salix sitchensis R. Sutherland 1978-2-18 6 .18278 Humboldt S side Mattole River 8 Comment
  HSC59689  Salix sitchensis Marla J. Carollo 1979-5-4 61 Humboldt Clam Beach Lagoon, near Little River Beach, adjacent to Hwy. 101 Comment
  HSC90419  Salix sitchensis Jean Hanson 1980-3-8 26 Humboldt Indian (Gunther) Island, Humboldt Bay, Eureka, W end of island Comment
  HSC96588  Salix sitchensis Gordon Leppig 2003-2-22 1817 Humboldt Mad River Beach, near parking lot 3 Comment
  JEPS14775  Salix sitchensis Joseph P. Tracy 1933-3-19 10930 Humboldt on Van Duzen River Blue Slide; Northern Coast Ranges 91 Comment
  UC1196608  Salix tracyi Joseph P. Tracy 1926-8-12 7761 Humboldt Redwood Creek, at Berry's 274 Comment
  RSA28377  Sambucus callicarpa E. K. Balls, P. C. Everett 1953-10-12 18633 Humboldt moist ditches, road to Crannell, 0.5 mi. E from Hwy 101, near first overhead bridge. 15 Comment
  RSA303565  Sambucus callicarpa J. R. Shevock 1972-3-26 1472 Humboldt Along Highway 101, near Patrick Pt. 106 Comment
  HSC59043  Sambucus racemosa var. racemosa Thomas Wood 1979-4-20 118 Humboldt W of Clam Beach adjacent to McKinleyville Rd. Jct. with Hwy. 101 6 Comment
  HSC75561  Sambucus racemosa var. racemosa N. D. Dennis 1965-4-2 3 Humboldt Corner of Del Norte and L St., Eureka. Comment
  UC28612  Sambucus racemosa var. racemosa J. Burtt Davy 1899-6-12 5480 Humboldt Camp Grant North Coast Ranges, Eel River Comment
  HSC1798  Sanguisorba minor William J. Ferlatte, B. D. Rogers 1966-8-15 3122 Humboldt 1/2 mi. E of Azalea State Park Comment
  CAS-BOT-BC157200  Sanguisorba officinalis L. B. Kildale 1930-7-11 10208 Humboldt Snow Camp head of Redwood Creek Comment
  CHSC52919  Sanicula arctopoides L. P. Janeway 1984-4-11 728 Humboldt On the North Spit of Humboldt Bay; northwest of the boat ramp and north of the Coast Guard Sta. 4 Comment
  HSC91933  Sanicula arctopoides E. Mackey 1987-6-11 Humboldt Patrick's Point State Park, Palmer's Point trail to beach Comment
  HSC95577  Sanicula arctopoides Andrea Pickart 2002-3-14 7 Humboldt Samoa Dunes, BLM Endangered Plant Protection Area 0 Comment
  HSC91934  Sanicula crassicaulis E. Mackey 1986-5-13 Humboldt Patrick's Point State Park, edge of forest at Palmer's Point Comment
  HSC45395  Sanicula graveolens Thomas W. Nelson, Jane P. Nelson 1977-7-4 3594 Humboldt Beside pond above Alder Springs 1585 Comment
  HSC48752  Sanicula graveolens Brad Klipfel 1973-6-16 78 Humboldt Along ridge trail SE of N Trinity Mountain 1829 Comment
  UC154130  Sanicula laciniata J. P. Tracy 1903-5-23 1897 Humboldt at Alder Point Alder Point 243 Comment
  HSC82107  Sanicula tracyi Thomas W. Nelson, Jane P. Nelson 1980-5-25 5248 Humboldt Along road from Dinsmore to Anderson Crossing, McKeown Ranch Rd. 100 m N of junction of road to Hindley Cabin 823 Comment
  UC1222809  Sanicula tracyi Joseph P. Tracy 1950-4-20 18606 Humboldt opposite Buck Mountain (Dinsmore's, along Van Duzen River); along Van Duzen River, opposite Buck Mountain 762 Comment
  UC1565803  Sanicula tuberosa R. Spellenberg 1990-7-9 10227 Humboldt 14 air mi sw of Burnt Ranch (20.5 mi s of California Hwy 299 and Berry Summit on USFS Rd 1, on Pilot Ridge, extreme e edge of Humboldt County); Pilot Ridge 1371 Comment
  UC562449  Sarcodes sanguinea Joseph P. Tracy Jul 16-19 1930 8943 Humboldt South Fork Mountain, near McKay Camp 1676 Comment
  JEPS62817  Satureja douglasii W. L. Jepson 1932-8-8 16485 Humboldt Canoe Creek Grasshopper Peak 1066 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
  UC902007  Saxifraga mertensiana Joseph P. Tracy 1941-4-11 16858 Humboldt Willow Creek Canyon, along Trinity Highway Willow Creek Canyon 304 Comment
  UCD13239  Saxifraga mertensiana Collector unknown 1976-4-10 106 Humboldt California: Humboldt Co. Junction of stae Highway 36 with Alderpoint Rd. Elev. 1800 ft. 548 Comment
  HSC55745  Saxifragopsis fragarioides G. L. Clifton, Griswold 1979-7-26 10267 Humboldt Near Salmon Mtn., close to the town of Forks of Salmon 1935 Comment
  HSC96371  Schoenoplectus mucronatus Gordon Leppig 2004-9-1 2196 Humboldt Eel River at Holmes Flat 400 Comment
  POM87952  Schoenoplectus pungens Le Roy Abrams, Rimo C. Bacigalupi 8268 Humboldt Big Lagoon, south of Orick. Comment
  SEINET3913367  Schoenoplectus pungens var. badius J. D. Ackerman 1975-6-10 465 Humboldt About 1 mi. N of Samoa Bridge turnoff from Samoa Blvd., S of Manila. Humboldt Bay.; 0 Comment
  UC668007  Scirpus microcarpus Joseph P. Tracy 1934-6-21 13242 Humboldt near Fields Landing; near Fields Landing 6 Comment
  UC1103491  Scoliopus bigelovii Joseph P. Tracy 1933-3-26 10941 Humboldt Big Lagoon 91 Comment
  HSC15637  Scoliopus bigelovii T. W. Beck 1963-3-2 4 Humboldt Camp Bauer, Korbel, near Mad River Comment
  SEINET3991325  Scoliopus bigelovii Unknown 1956-3-17 104 Humboldt South boundary of Jensen grove, off US Highway 101 Comment
  JEPS120525  Scrophularia californica B. Castro and L. P. Janeway 2004-9-11 1476 Humboldt North Coast. Near blocked S end of Little River Road 0.25 mi N of Central Avenue; near S end of Clam Beach. Comment
  UC582593  Scrophularia californica Joseph P. Tracy 1933-8-22 12980 Humboldt Eureka 6 Comment
  UC582594  Scrophularia californica Joseph P. Tracy 1937-7-30 15565 Humboldt 6 mi se Arcata (Fickle Hill) 609 Comment
  HSC60289  Scrophularia californica Phyllis Krieg 1979-4-21 Humboldt Above Clam Beach Lagoon, E of Hwy. 101 0 Comment
  RSA425151  Scrophularia californica Christopher Davidson 1973-5-29 2202 Humboldt 2 miles S of Carlotta on Hwy 36 61 Comment
  UC1011942  Scrophularia californica Francis W. Pennell 1949-7-6 26080 a Humboldt 2 mi nw Pepperwood (along Eel river, Rte 101) 30 Comment
  UC1409052  Scrophularia californica subsp. californica Robert F. Thorne and P. Everett 1965-8-9 35314 Humboldt Clam Beach County Park 3 Comment
  HSC97100  Scutellaria antirrhinoides Yun Chan, Renee Meyer, Sophary Yun 2007-6-11 4 Humboldt 14.1 mi. S of Hwy. 299 on FS Rd. NF1 1364 Comment
  UC1239707  Scutellaria antirrhinoides Joseph P. Tracy 1930-7-23 9123 Humboldt Horse Mountain; Northern Coast Ranges, Horse Mountain 1432 Comment
  POM126380  Scutellaria antirrhinoides Chesnut, E. R. Drew 1888-7-10 s.n. Humboldt Jarnigan s. Comment
  UC154008  Scutellaria antirrhinoides Joseph P. Tracy 1908-6 2914 Humboldt nw slope of Buck Mountain; Northern Coast Ranges, Buck Mountain 1219 Comment
  HSC100510  Scutellaria bolanderi Carl C. Marshall May 1887 422 Humboldt Near Alder Point. Comment
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Jul 22 2018
  UC154015  Scutellaria californica Joseph P. Tracy 1908-6 2817 Humboldt opposite Buck Mountain (Valley of Van Duzen River); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  UC1239701  Scutellaria californica Joseph P. Tracy 1942-7-1 17363 Humboldt opposite Buck Mountain (along the Van Duzen River, Dinsmore's); Van Duzen River, Dinsmore's 762 Comment
  HSC14401  Scutellaria tuberosa D. E. Anderson 1965-5-8 3644 Humboldt About 2 mi. N of Willow Creek on the road running along E side of Trinity River Comment
  HSC79263  Sedum laxum subsp. heckneri D. K. Imper 1983-6-28 Humboldt Six Rivers National Forest, Trinity River Canyon, 2 mi. S of Weitchpec Comment
  HSC65853  Sedum radiatum Gail Newton 1980-6-28 736 Humboldt Near Mad River Butte. 1536 Comment
  HSC97996  Sedum radiatum Cara Witte 2007-7-8 440 Humboldt Board Camp Mountain. Trail 4E28. 1498 Comment
  CAS-BOT-BC63826  Sedum spathulifolium Elizabeth Parsons Hawyer 1915-6-1 s.n. Humboldt Carlotta Comment
  UC166031  Sedum spathulifolium Joseph P. Tracy 1907-7-4 2582 Humboldt coast bluffs near Trinidad; Northern Coast Ranges, near Trinidad 30 Comment
  CDA32353  Selaginella kraussiana G. F. Hrusa, R. Bencie, L. Bencie, C. & E. Dogwin 2010-12-29 18277 Humboldt North Coast; Forest E of Humboldt St. Univ., above Fern Lake. 47 Comment
  CDA42470  Selaginella kraussiana Gordon Leppig 2000-4-12 1290 Humboldt Arcata: behind Humboldt State University, at base of stump near Fern Lake spillway. Comment
  UC519317  Selaginella oregana Joseph P. Tracy 1933-2-19 10903 Humboldt above Korbel (N. Fork Mad River); North Coast Ranges 60 Comment
  UC1225807  Selaginella wallacei Joseph P. Tracy 1948-5-31 17998 Humboldt Harris 609 Comment
  SEINET10472835  Senecio Mary Susan Taylor 1982-10-24 Taylor 5185 Humboldt T5N R1W nw sec 15. Eureka quad. Samoa, under bridge, ca. 1 mi nw of Eureka. Sea level. Sandy soils. 0 Comment
  SBBG62728  Senecio hydrophilus R. Hartwell 1938-8-6 113 Humboldt near Eureka Comment
  HSC98958  Senecio integerrimus var. major Cara Witte 2008-7-28 950 Humboldt Spike Buck Mountain. Forest Service Road 5N18. 1/2 mile from intersection with National Forest 1. 1565 Comment
  UCD135616  Senecio minimus Linda M. Barker 1976-8-2 1677 Humboldt 3 miles west of Arcata. Comment
  UCD135598  Senecio minimus P. B. Kennedy 1925-8-29 s.n. Humboldt northeast Eureka. Comment
  HSC36579  Senecio sylvaticus Thomas W. Nelson, James Nelson 1975-9-3 2197 Humboldt Above the junction of Maple Creek-Kneeland Rd. Comment
  HSC58000  Senecio triangularis G. L. Clifton, Griswold 1979-7-31 11780 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1805 Comment
  CAS-BOT-BC364523  Senecio vulgaris Doris K. Kildale 1925-12-6 1821 Humboldt Orick near mouth of Redwood Creek Comment
  MACF015653  Sequoia sempervirens F. A. MacFadden 1935-6-22 13644 Humboldt Richardson's Grove, Humboldt California Comment
  UC195423  Sequoia sempervirens Joseph P. Tracy 1914-12-20 4638 Humboldt Eureka 0 Comment
  UCD135226  Sequoia sempervirens C. H. Lamoureux 1956-3-17 1044 Humboldt At south boundary of Jensen Grove, between Meyers and Miranda on U.S. Highway 101. Comment
  HSC19859  Sherardia arvensis John A. Dubois 1962-5-23 25 Humboldt 20 mi. E of Arcata Comment
  RSA46486  Sherardia arvensis Doris K. Kildale 1926-4-25 1806 Humboldt Willow Creek Flat. 152 Comment
  UC1198397  Sidalcea diploscypha Joseph P. Tracy 1942-6-15 17166 Humboldt 5 mi n Garberville; n of Garberville 152 Comment
  HSC35615  Sidalcea malviflora Thomas W. Nelson, B. Reinhardt 1975-7-30 2111 Humboldt Whiting Spring 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
  UC176967  Sidalcea malviflora subsp. patula Joseph P. Tracy and Ernest B. Babcock 1912-5-11 3597 Humboldt near Hydesville; Northern Coast Region 30 Comment
  HSC104426  Sidalcea malviflora subsp. patula Bianca Hayashi 2013-6-13 Humboldt South of Bald Mountain Comment
  HSC58086  Sidalcea oregana G. L. Clifton, Griswold 1979-8-1 11994 Humboldt Near N Trinity Mtn., close to the town of Hoopa 1799 Comment
  POM62156  Sidalcea oregana subsp. eximia Joseph P. Tracy 1917-9-1 4831 Humboldt Murphy Meadow, Bald Mountain 1067 Comment
  HSC22032  Silene Richard Spjut 1971-5-8 1875 Humboldt 1 mi. up Friday Ridge Rd., 3 mi. E of Willow Creek Comment
  HSC82167  Silene bernardina D. K. Imper 1985-6-18 Humboldt Above FS Rd. 10N01 just NW of Whitey's Peak 1738 Comment
  CAS-BOT-BC384547  Silene bridgesii Henry M. Pollard 1948-7-17 s.n. Humboldt Woods near Orleans Comment
  JEPS23249  Silene californica Joseph P. Tracy 1938-7-7 16040 Humboldt Grouse Mountain 1524 Comment
  UC465673  Silene californica Mrs. M. H. Manning 1900-1 Humboldt Hoopa Valley Comment
  RSA78056  Silene californica P. A. Munz 1952-3-27 17800 Humboldt Boise Creek Public Camp west of Willow Creek. 366 Comment
  HSC70980  Silene campanulata subsp. glandulosa Gail Newton 1980-7-22 1665 Humboldt Near Devils Backbone 231 Comment
  HSC39236  Silene gallica D. E. Anderson, J. P. Smith 1971-6-28 - 1267 Humboldt 2.5 mi. S of Blue Lake along the Mad River Comment
  HSC62895  Silene gallica J. M. DiTomaso 1979-5-20 1053 Humboldt Sand at Big Lagoon Park, 8 mi. N of Trinidad Comment
  HSC79418  Silene gallica Kenneth Clark 1980-5-10 637 Humboldt W slopes above Dead Man's Gulch 122 Comment
  CAS-BOT-BC388938  Silene grayi Joseph P. Tracy 1932-7-12 10477 Humboldt Trinity Summit. Head of Brett Hole 1828 Comment
  HSC103763  Silene hookeri M. R. Mesler, Sydney Carothers 2013-6-3 1482 Humboldt Near Orleans, ca. 0.6 miles west of NR 15 on FS rd 12N20 790 Comment
  CAS-BOT-BC389069  Silene laciniata subsp. californica W. R. Dudley 1899-6-20 s.n. Humboldt South Fork of Eel River Comment
  SBBG21920  Silene laciniata subsp. californica D. Myrick 1964-7-26 976 Humboldt Hwy 299 ca. 15 mi E of Arcata 762 Comment
  CAS-BOT-BC389070  Silene laciniata subsp. californica Thomas W. Nelson; Jane P. Nelson 1980-7-13 6059 Humboldt North Coast Ranges. Along the road from Dinsmore to Anderson Ford-McKeown Ranch road 762 Comment
  UC13563  Silene menziesii Chesnut and Drew 1888-7-23 Humboldt Hy-Am-Pum Hy-Am-Pum (Hy-Am-Pom ?) Comment
  UC1222649  Sisymbrium altissimum Joseph P. Tracy 1950-8-20 19322 Humboldt 8 mi below Orleans (near Slate Creek, along Klamath River at Big Bar); Klamath River, Big Bar 121 Comment
  HSC89540  Sisymbrium officinale M. Roantree 1985-4-28 26 Humboldt E side of Trinidad Head, along dirt road Comment
  UC1196377  Sisyrinchium bellum J. P. Tracy 1906-7-1 2518 Humboldt immediate vicinity of Eureka; Ricks Prairie 0 Comment
  UC1196380  Sisyrinchium bellum Joseph P. Tracy 1931-6-7 9572 Humboldt 2 mi n Trinidad 60 Comment
  UC667000 Image available Sisyrinchium hitchcockii Joseph P. Tracy 1938-6-17 15947 Humboldt 3 mi e of Cape Mendocino; Cape Ridge 304 Comment
  JEPS561  Smilacina racemosa Joseph P. Tracy 1938-7-7 16038 Humboldt Grouse Mountain 1524 Comment
  JEPS62108  Smilacina racemosa W. L. Jepson 1902-7-24 2114 Humboldt 1/2 mi below summit; Trinity Summit 2133 Comment
  HSC20461  Solanum douglasii John Warner Hosking 1968-10-10 Humboldt Clam Beach Comment
  CAS-BOT-BC154214  Solanum umbelliferum E. P. Hawver 1915-6-1 s.n. Humboldt Carlotta Comment
  RSA167235  Solanum umbelliferum Joseph P. Tracy 1950-6-18 18851 Humboldt Open places at edge of thicket, Briceland. Comment
  HSC91905  Solidago elongata E. Mackey 1986-7-21 Humboldt Patricks Point State Park; Palmer's Point Comment
  CHSC109579  Solidago spathulata B. Castro; L. P. Janeway 2004-9-10 1474 Humboldt North Coast. South Spit of Humboldt Bay, 2.2 mi NNE of Table Bluff Lighthouse site: on other side of South Spit Road from the Humboldt Bay mudflats. 2 Comment
  HSC67441  Solidago spathulata J. P. Smith 1971-10-6 4948 Humboldt End of Murray Rd. in McKinleyville. Comment
  SEINET5506402 Image available Solidago spathulata S. K. Harris 1939-1 s.n. Humboldt Samoa Comment
  SD148219  Solidago spathulata var. spathulata G. K. Helmkamp, E. A. Helmkamp 2001-7-8 7023 Humboldt Samoa Peninsula, 2.6 miles south of California 255 bridge across Humboldt Bay. 14 Comment
  HSC39938  Sonchus oleraceus Linda M. Barker 1976-7-5 1644 Humboldt 3 mi. W of Arcata Comment
  UC582435  Sonchus oleraceus Joseph P. Tracy 1935-5-16 13805 Humboldt Eureka 30 Comment
  HSC56053  Sorbus scopulina G. L. Clifton, Griswold 1979-7-31 11655 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1719 Comment
  HSC97205  Sorbus scopulina Kiera A. Freeman, Heather J. Perry 2007-6-13 7 Humboldt 1.3 mi. E of NF1 on FS 5N04 1585 Comment
  POM312952  Sparganium angustifolium subsp. emersum S. Galen Smith, Malcolm A. Nobs 1949-8-9 1228 Humboldt 1 mile north of Arcata at junction of Highways 101 and 299, Mad River Valley. Comment
  HSC89261  Spartina alterniflora Anni Eicher 1989-4-20 366 Humboldt .5 mi. N of Samoa-Eureka bridge, E of State Hwy. 255, Humboldt Bay Comment
  CAS-BOT-BC389919  Spergula arvensis John H. Thomas 1966-3-19 11488 Humboldt Southern end of Big Lagoon, just inland from the coast between Eureka and Crescent City. Alt. above sea level Comment
  HSC4233  Spergula arvensis W. Lanphere 1937-4-20 Humboldt College Campus Comment
  HSC79185  Spergula arvensis L. P. Janeway 1984-2-4 710 Humboldt Along Bayside Rd. NW of Jacoby Creek School 18 Comment
  HSC37994  Spergularia macrotheca Peter Sorensen 1976-6-19 Humboldt Woodley Island Comment
  HSC37993  Spergularia rubra Peter Sorensen 1976-6-2 Humboldt Woodley Island, Humboldt Bay 1 Comment
  CAS-BOT-BC149618  Spiraea douglasii Malcom A. Nobs; S. Galen Smith 1949-8-9 1226 Humboldt 1 mile north of Arcata at junction of Highways 101 and 299, Mad River Valley Comment
  RSA239688  Spiraea douglasii Larry E. DeBuhr 1973-4-23 996 Humboldt Big Lagoon 10 miles S of Orick, SW end of lagoon Comment
  UC666998  Spiranthes romanzoffiana Joseph P. Tracy 1930-6-15 8766 1/2 Humboldt summit of ridge between Dobbyn Creek and Alder Point (near Alder Point) Comment
  UC146132  Spirodela polyrhiza Joseph P. Tracy 1908-6 2745 Humboldt nw slope Buck Mountain (pond above mouth of Little Van Duzen); Northern Coast Ranges 457 Comment
  SEINET5196066  Stachys ajugoides Unknown 2002-8-22 87 Humboldt Along Fischer Road 0.25mi N of the Mad River. Comment
  UC180214  Stachys ajugoides var. rigida Joseph P. Tracy 1914-6-14 4512 Humboldt near Hydesville; Northern Coast Region 60 Comment
  UC630494  Stachys ajugoides var. rigida H. E. and S. T. Parks 1937-7 24025 Humboldt Spruce Cove Trinidad 60 Comment
  HSC59567  Stachys arvensis Rick Lundquist 1979-4-9 5 Humboldt Arcata, St. Louis Rd., .1 mi. N of Hwy. 101 overpass 15 Comment
  BLMAR315  Stachys chamissonis Jennifer Anthony-Wheeler 2002-8-9 315 Humboldt Lost Coast Headland 121 Comment
  HSC49033  Stachys mexicana Patricia Shesgreen 1978-5-5 68 Humboldt 17.4 mi. S of Ferndale on Mattole Rd. 91 Comment
  HSC21956  Stachys rigida var. rigida John Warner Hosking 1968-10-10 Humboldt Clam Beach. Comment
  UC8638  Stellaria borealis subsp. sitchana Harley P. Chandler May 1901 1178 Humboldt Humboldt Bay; North Coast Ranges Comment
  UC1198283  Stellaria media Joseph P. Tracy 1923-4-15 6185 Humboldt Redwood Creek Northern Coast Ranges (at Berry's) 274 Comment
  HSC4271  Stellaria media S. R. Johnson 1965-3-23 17 Humboldt 1 mi. N of Luffenholtz Beach Comment
  HSC4279  Stellaria media Jack Rockwell 1962-4-5 30 Humboldt N bank of Van Duzen River, E of Hwy. 101 Comment
  HSC59046  Stellaria media Thomas Wood 1979-4-1 92 Humboldt 3/4 mi. W of Upper Bay Rd. X Janes Rd. on Lamphere-Upper Bay Rd. Comment
  UC1197796  Stenanthium occidentale Joseph P. Tracy 1947-8-24 17901 Humboldt Box Camp; Trinity Summit 1463 Comment
  HSC70964  Stipa lemmonii Gail Newton 1980-7-15 1584 Humboldt Near Sims Mtn. 1311 Comment
  CAS-BOT-BC87609  Streptanthus tortuosus Doris Kildale Gillespie 1931-6-7 10597 Humboldt South Fork Mountain. Blake Lookout. 1726 Comment
  CAS-BOT-BC87612  Streptanthus tortuosus Joseph P. Tracy 1932-7-12 10457 Humboldt Klamath Mountains. Trinity Summit. Head of Brett Hole. 1828 Comment
  HSC65856  Streptanthus tortuosus Gail Newton 1980-6-28 687 Humboldt Near Mad River Butte. 1536 Comment
  HSC74748  Streptanthus tortuosus Gail Newton 1981-7-22 2260 Humboldt Near Bug Creek 1375 Comment
  HSC57967  Streptanthus tortuosus var. tortuosus G. L. Clifton, Terry Griswold 1979-7-31 11685 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1805 Comment
  UC1103497  Streptopus amplexifolius var. americanus Joseph P. Tracy 1940-8-25 16720 Humboldt near High Prairie; Bald Mountain 1066 Comment
  SBBG88906  Stuckenia pectinata A. Keedy 1988-9-20 11 Humboldt off Alder Grove Rd, N of Arcata, near Hwy 299, Arcata Salt Marsh Project Comment
  HSC54882  Swertia radiata G. L. Clifton, Griswold 1979-7-25 10883 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1784 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
  UC1585428  Symphoricarpos albus var. laevigatus R. Raiche, K. Zadnik, and H. Forbes 1989-10-2 26 Humboldt sw of Hoopa (on Bair Rd, at Pine Ridge Summit); Pine Ridge Summit 970 Comment
  HSC63805  Symphoricarpos mollis M. A. Baker 1979-5-25 762 Humboldt Comment
  SBBG60770  Symphyotrichum chilense R. Hartwell 1938-8-6 Humboldt Eureka Comment
  UC1174865  Symphyotrichum chilense P. C. Everett and E. K. Balls 1959-10-25 23960 Humboldt 1/4 mi w of, on hwy 299 to Arcata Willow Creek 502 Comment
  CAS-BOT-BC99170  Symphyotrichum chilense Volney Rattan 1877-3-2 s.n. Humboldt Unspecified Comment
  UC1222985  Symphyotrichum hendersonii Joseph P. Tracy 1950-8-7 19271 Humboldt Box Camp Trinity Summit 1463 Comment
  HSC44086  Symphyotrichum spathulatum var. spathulatum Thomas W. Nelson, Jane P. Nelson 1977-9-3 3726 Humboldt Along Creek draining, north from pond above Alder Spring 1585 Comment
  SEINET3816601  Tanacetum bipinnatum A. A. Heller 1937-6-12 15900 Humboldt On the coast at Trinidad just below the road leading up to the light house on Trinidad head. Humid transition life zone. Comment
  CAS-BOT-BC376833  Tanacetum vulgare Carl B. Wolf 1937-9-12 9330 Humboldt Big Lagoon, So. side along Redwood Highway 6 Comment
  SBBG65851  Tanacetum vulgare L. Rowntree -Jul-1931 Humboldt near Ferndale Comment
  SD42343  Tanacetum vulgare Carl B. Wolf 1937-9-12 9330 Humboldt Big Lagoon, south side along Redwood Highway 6 Comment
  UC1223046  Taraxacum officinale Joseph P. Tracy 1951-6-24 19542 Humboldt Ashland Ridge Kneeland Prairie 762 Comment
  HSC21652  Tauschia kelloggii B. R. Templeton 1962-4-14 Humboldt 3 mi. W of Orleans Comment
  HSC54591  Taxus brevifolia Overton, Butler 1979-7-24 9659 Humboldt Near Friday Camp, close to the town of Willow Creek. 1250 Comment
  UC502917  Taxus brevifolia Joseph P. Tracy 1927-3-27 7865 Humboldt Willow Creek Canyon Northern Coast Ranges, Willow Creek Canyon 762 Comment
  HSC32947  Tellima grandiflora Thomas W. Nelson, James Nelson 1973-5-28 960 Humboldt McKeown Ranch N of Dinsmore Comment
  HSC20422  Tellima grandiflora D. A. Shally 1965-5-15 47 Humboldt Arcata, 1/4 mi. NE of HSC campus on Jolly Giant Creek Comment
  UCD96769  Thalictrum fendleri var. polycarpum Joseph P. Tracy 1948-6-13 18037 Humboldt Larrabee Creek, 7 miles NW of Blocksburg. 304 Comment
  RSA430063  Thelypodium brachycarpum Emery M. Whilton 1941-6-27 s.n. Humboldt Near Eureka Comment
  UC495728  Thermopsis gracilis Joseph P. Tracy 1929-7-4 8612 Humboldt French Camp Ranch; Northern Coast Ranges 1066 Comment
  UC1198810  Thlaspi montanum var. montanum Joseph P. Tracy 1934-7-18 13431 1/2 Humboldt Grouse Mountain; North Coast Ranges, Grouse Mountain 1524 Comment
  UC552289  Thlaspi montanum var. montanum Joseph P. Tracy 1933-7-11 12690 Humboldt Grouse Mountain; North Coast Ranges, Grouse Mountain 1524 Comment
  LA31710  Thuja plicata H. E. Parks; 1932-7-25 1139 Humboldt Trinidad, Camp 21, Hammond Lumber Company 152 Comment
  NY17200  Thuja plicata I. L. Wiggins 1955-7-31 13594 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
  RSA89625  Thuja plicata E. K. Balls, P. C. Everett 1953-10-13 18653 Humboldt 10.6 mi E of jct of Hwys 101 and 299 between Arcata and Willow Creek. 244 Comment
  UC484081  Thuja plicata Carl B. Wolf 1930-10-25 1764 Humboldt 9 m above Blue Lake (along road to Willow Creek (Lord Ellis Road)) 243 Comment
  UC615042  Thuja plicata Beryl O. Schreiber 1934-6-5 1132 Humboldt 5 mi e of Blue Lake (road to Redding, wooded slope) Comment
  CAS-BOT-BC88320  Thysanocarpus curvipes L. B. Kildale 1930-6-1 9763 Humboldt Klamath River at Bluff Creek. Comment
  HSC22843  Thysanocarpus curvipes D. E. Anderson, J. O. Sawyer, J. P. Smith 1970-5-10 5060 Humboldt Along road from Redwood Creek to Hoopa, 1-3 mi. W of Hoopa Comment
  HSC38629  Tiarella trifoliata var. unifoliata D. E. Anderson, J. P. Smith 1971-6-18 - 1099 Humboldt In narrow canyon of the N Fork of Mad River, along Hwy. 299, E of Blue Lake Comment
  POM274694  Tiarella trifoliata var. unifoliata Lyman Benson 1928-7-11 454 Humboldt Bull Creek Flat. Dyerville. Seaward N Coast mt range. Bull Creek, S. Fork Eel River. 61 Comment
  UC14482  Tolmiea diplomenziesii Chesnut and Drew 1888-7-9 Humboldt near Arcata Comment
  UC1222359  Tolmiea diplomenziesii Joseph P. Tracy 1950-6-15 19040 Humboldt vicinity Willow Creek (near mouth of Raccoon Creek, 1 mi ne of Patterson's Ranch) Comment
  RSA41966  Tolmiea menziesii H. C. Cantelow 1935-6-13 1095 Humboldt East of Arcata. Road to Weaverville. Comment
  UC1198061  Tonella tenella Joseph P. Tracy 1908-6-9 2660 Humboldt Kneeland Prairie; Northern Coast Ranges 762 Comment
  UC249611  Torilis nodosa Joseph P. Tracy 1922-6-18 6092 Humboldt North Yager Creek 762 Comment
  UC1199001  Toxicodendron diversilobum Joseph P. Tracy 1933-6-7 12523 Humboldt Bridgeville 198 Comment
  RSA167316  Tracyina rostrata Joseph P. Tracy 1950-6-23 18859 Humboldt Dobbyn Creek, 3 miles northeast of Alderpoint. 213 Comment
  UC175495  Trichostema oblongum Joseph P. Tracy 1912-7-31 3945 Humboldt Buck Mountain, near the summit Northern Coast Ranges 1676 Comment
  HSC17943  Trientalis latifolia Yarick 1960-8-3 Humboldt K&K. Kruger Cr. Comment
  HSC97593  Trientalis latifolia Steven Lee 2004-4-26 27 Humboldt E several mi. from Arcata on Jacoby Creek Rd. Comment
  UC154025  Trientalis latifolia J. P. Tracy 1900-5-22 798 Humboldt immediate vicinity of Eureka 0 Comment
  HSC44771  Trientalis latifolia Thomas W. Nelson, Jane P. Nelson 1977-7-1 3550 Humboldt Along north side of ridge between Bear and Blanket Creeks, unsurveyed section east of Sec. 25 1494 Comment
  UC1197240  Trifolium albopurpureum var. dichotomum Joseph P. Tracy 1915-6-27 4659 Humboldt near Carlotta (Yager Creek); Northern Coast Ranges 60 Comment
  UC1197497  Trifolium barbigerum J. P. Tracy 1911-6-25 3260 Humboldt immediate vicinity Eureka (near Bucksport) 0 Comment
  UC495698  Trifolium barbigerum Joseph P. Tracy 1927-5-14 8028 Humboldt Willow Creek Trinity River Valley 152 Comment
  UC1197179  Trifolium bifidum var. decipiens Joseph P. Tracy 1903-5-23 1900 Humboldt at Alder Point (Eel River); Northern Coast Ranges 91 Comment
  UC162784  Trifolium campestre J. P. Tracy 1906-6-25 2512 Humboldt immediate vicinity Eureka 0 Comment
  UC33309  Trifolium cyathiferum W. C. Blasdale 1896-6-8 Humboldt Graham's Rage Comment
  UC594162  Trifolium cyathiferum S. K. Harris, J. P. Tracy, and H. S. Yates 1936-6-17 3452 Humboldt nw slopes Buck Mtn 822 Comment
  UC1223476  Trifolium depauperatum var. depauperatum Joseph P. Tracy 1941-4-26 16864 Humboldt Kneeland Prairie 762 Comment
  UC162856  Trifolium depauperatum var. depauperatum Joseph P. Tracy 1906-6-10 2476 Humboldt Kneeland Prairie Northern Coast Ranges, Eureka 762 Comment
  HSC15116  Trifolium dubium Harvey Doerksen 1962-5-8 18 Humboldt 3 mi. W of Blue Lake, fork Mad River and Essex Creek Comment
  UC179921  Trifolium dubium Joseph P. Tracy 1914-7-4 4522 Humboldt between Korbel and Angels Ranch roadside; Northern Coast Ranges Comment
  UCD108818  Trifolium dubium Linda M. Barker 1976-5-13 1476 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  RSA91498  Trifolium dubium F. W. Peirson 1923-7-11 3622 Humboldt 20 miles north of Eureka Comment
  UC16713  Trifolium eriocephalum var. eriocephalum J. Burtt Davy 1899-6-7 5385 Humboldt near Harris; North Coast Ranges Comment
  UC33413  Trifolium eriocephalum var. eriocephalum W. C. Blasdale 1896-6-7 Humboldt Mad River Comment
  HSC15123  Trifolium fucatum R. A. Rasp 1964-5-17 38 Humboldt 1 mi. S of Arcata beside Hwy. 101 Comment
  HSC48764  Trifolium longipes Brad Klipfel 1973-6-10 100 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  UC1223332  Trifolium longipes var. oreganum Joseph P. Tracy 1947-7-27 17836 Humboldt Horse Mtn Comment
  UC33399  Trifolium macraei W. C. Blasdale 1896-6-7 Humboldt Graham's Ranch Comment
  UC160907  Trifolium microcephalum J. P. Tracy 1900-5-28 821 Humboldt immediate vicinity Eureka 0 Comment
  CDA28005  Trifolium microdon E. C. Whitney 1978-5-25 Humboldt Art Tooby property, Harris. 0 Comment
  UC1197485  Trifolium obtusiflorum Joseph P. Tracy 1911-6-29 3267 Humboldt near Hydesville (Van Duzen River); Northern Coast Region 60 Comment
  UC249721  Trifolium oliganthum Joseph P. Tracy 1921-4-24 5438 Humboldt facing South Fork of Eel River (Phillipsville); Northern Coast Ranges 121 Comment
  UC162783  Trifolium pratense J. P. Tracy 1909-6-6 2987 Humboldt immediate vicinity Eureka 0 Comment
  HSC59678  Trifolium pratense George Kirn 1977-10-1 Humboldt Eureka, open bayfront field 1/2 mi E of Hwy 255 6 Comment
  RSA246676  Trifolium pratense Robert F. Thorne, Percy C. Everett, K. Thorne 1965-8-8 35259 Humboldt N. edge of Eureka, E. of Hwy. 101 5 Comment
  UC1223325  Trifolium repens Joseph P. Tracy 1933-7-25 12861 Humboldt near Clear Lake; Grouse Mtn 1524 Comment
  HSC34617  Trifolium subterraneum David Ferranti 1974-5-6 Humboldt Garden weed at 43601/2 Union St. Eureka Comment
  UC1223534  Trifolium variegatum var. melananthum Joseph P. Tracy 1935-5-25 13861 Humboldt Fort Seward 106 Comment
  UC1103451  Trifolium variegatum var. melananthum J. P. Tracy 1898-4 158 Humboldt Eureka vicinity Northern Coast Region 0 Comment
  UC160946  Trifolium variegatum var. melananthum J. P. Tracy 1900-5-22 820 Humboldt Eureka vicinity 0 Comment
  JEPS4384  Trifolium variegatum var. variegatum Lincoln Constance 1934-5-31 764 Humboldt along n side Bull Creek (Bull Creek Flat, from w boundary of park to Grasshopper Park Rd (Squaw Creek)); South Fork Eel River, Bull Creek region Comment
  UC1103457  Trifolium variegatum var. variegatum Joseph P. Tracy 1925-8-9 7227 Humboldt near Miranda (Salmon Creek); Northern Coast Ranges 91 Comment
  UC1197510  Trifolium willdenovii Joseph P. Tracy 1922-4-30 6033 Humboldt near Willow Creek; Northern Coast Ranges, Trinity River Valley 152 Comment
  HSC71470  Trifolium willdenovii J. P. Smith, J. O. Sawyer 1973-5-12 6674 Humboldt 2 mi. from Redwood Creek on Hoopa Rd. Comment
  UC160943  Trifolium willdenovii Joseph P. Tracy 1903-5-24 1910 Humboldt Alder Point Northern Coast Ranges (Eel River) 152 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
  HSC15194  Trifolium wormskioldii Norman H. Moe 1962-5-17 Humboldt Lanphere's Place. Comment
  HSC15196  Trifolium wormskioldii J. W. Bosworth 1965-5-14 50 Humboldt 1 mi. N of Fairhaven Comment
  HSC15193  Trifolium wormskioldii D. E. Anderson 1961-9-13 1814 Humboldt Trinidad Beach Comment
  HSC90425  Trifolium wormskioldii Jean Hanson 1980-6-22 94 Humboldt Indian (Gunther) Island. In Humboldt Bay, city of Eureka. W end of Island. Comment
  JEPS101255  Triglochin maritima Dean W. Taylor 1991-9-15 12291 Humboldt Big Lagoon, along Highway 101 near the mouth of Tom Creek. 3 Comment
  HSC14172  Triglochin maritima R. L. Jarvis 1962-4-29 31 Humboldt Stone Lagoon, 3 mi. S of Orick 0 Comment
  RSA69588  Triglochin maritima F. W. Peirson 1923-7-11 6478 Humboldt Flats north of Eureka. Comment
  UC1197821  Trillium albidum Curtis Drake March 1932 Humboldt Comment
  HSC99359  Trillium kurabayashii K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-6-24 8 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  CAS-BOT-BC133390  Trillium ovatum Alice Eastwood 1939-3-19 18899 Humboldt Bolling Grove Comment
  CHSC23038  Trillium ovatum E. K. Daniels 1964-4-18 33 Humboldt Prairie Creek State Park; 1 mi from Pacific Ocean beach on trail towards Park Headquarters. 30 Comment
  CHSC59627  Trillium ovatum R. N. Raynor 1934-4-1 Humboldt Above Fort Seward. Comment
  HSC58083  Trillium ovatum G. L. Clifton, Griswold 1979-8-1 11987 Humboldt Near Mill Creek Lakes, close to the town of Hoopa 1707 Comment
  HSC59657  Trillium ovatum Marla J. Carollo 1979-4-10 3 Humboldt Side of the logging trail behind dorms of HSU campus Comment
  SEINET12048689  Trillium ovatum F. H. Utech, Walter, W.; Knight, I. 1984-1 84 -176 Humboldt ca 0.4 mi S towards Redcrest on Avenue of Giants from junction with US 101 15 Comment
  SEINET12810619  Trillium ovatum John D. Freeman, Ruth R. Freeman 1967-1 Humboldt Comment
  UC1197827  Trillium ovatum Joseph P. Tracy 1912-3-3 3561 Humboldt at Eureka Eureka; Northern Coast Region 0 Comment
  CAS-BOT-BC521319  Trillium rivale Volney Rattan 1883-6-1 s.n. Humboldt Willow Creek; Pacific Coast Comment
  HSC20849  Triphysaria eriantha subsp. eriantha B. Francis 1964-5-19 45 Humboldt 0.5 mi. S of Fairhaven Comment
  UC1198037  Triphysaria eriantha subsp. eriantha Joseph P. Tracy 1901-4-14 1020 Humboldt Sand Dunes of Ocean Beach at Humboldt Bay; Northern Coast Region, Humboldt Bay Comment
  BLMAR604  Triphysaria pusilla Jennifer Wheeler 2011-4-1 604 Humboldt King range, growing on Mattole beach dunes Comment
  UCR39973  Triphysaria pusilla L. P. Janeway 1984-5-13 772 Humboldt Along Kneeland/Bridgeville Road c. 11 mi east of Post Office 715 Comment
  UC902248  Triphysaria versicolor subsp. faucibarbata Joseph P. Tracy 1944-5-14 17469 Humboldt Eureka 6 Comment
  JEPS13343  Triphysaria versicolor subsp. versicolor W. K. Parks July, 1932 1427 Humboldt Trinidad Comment
  UC1198041  Triphysaria versicolor subsp. versicolor J. P. Tracy 1901-5-16 1091 Humboldt immediate vicinity Eureka; immediate vicinity of Eureka 0 Comment
  UC677722  Triphysaria versicolor subsp. versicolor S. K. Harris 1936-6-7 683 Humboldt Eureka 3 Comment
  CAS-BOT-BC199619  Trisetum canescens J. P. Tracy 1903-5-22 1877 Humboldt Alder Point on Eel River 152 Comment
  HSC99524  Trisetum canescens K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-22 187 Humboldt Near North Trinity Mtn, 11. 5 mi. E of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  UC552772  Trisetum canescens Joseph P. Tracy 1934-6-27 11074 Humboldt Grouse Mt.; Northern Coast Ranges 1432 Comment
  CAS-BOT-BC193513  Trisetum cernuum Harley P. Chandler 1901-5-1 1176 Humboldt Humboldt Bay 30 Comment
  HSC58671  Trisetum cernuum Gilbert Muth 1979-8-1 12147 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1677 Comment
  HSC98615  Triteleia hyacinthina Cara Witte 2008-8-6 1011 Humboldt Board Camp Mountain. Road to Tri Board Camp. 1486 Comment
  UC1197711  Triteleia hyacinthina Joseph P. Tracy 1935-5-25 13869 Humboldt Fort Seward 106 Comment
  UC1197717  Triteleia laxa Joseph P. Tracy 1938-6-17 15966 Humboldt between Petrolia and coast; Domingo Hill 152 Comment
  UC1222687  Triteleia laxa Joseph P. Tracy 1950-6-8 18755 Humboldt windswept flat s Cape Mendocino; Davis Creek Mouth Comment
  CAS-BOT-BC85892  Tsuga heterophylla C. B. Wolf 1930-10-25 1019 Humboldt Along the Blue Lake to Willow Creek road (Lord Ellis Road), 12 mi. above Blue Lake 304 Comment
  SJSU136  Tsuga heterophylla Emily D. Smith 1934-8-23 Humboldt Big Lagoon midway between Trinidad & Orick Comment
  UCD135134  Tsuga heterophylla Roman Gankin 1965-8-7 563 Humboldt Big Lagoon County Park. Comment
  HSC31495  Umbellularia californica Steve Selva, Roger Jensen 1974-8-27 85 Humboldt Along Hwy. 299 4.5 mi. E of Blue Lake Comment
  HSC41923  Umbellularia californica Ed Cope 1977-4-23 25 Humboldt 2.5 mi. S of Shelter Cove Rd., S Fork of Bear Creek at Wailaki Campground 561 Comment
  RSA134171  Umbellularia californica P. C. Everett, E. K. Balls 1959-10-25 23958 Humboldt 12.4 mi W from Willow Creek along US Hwy 299 to Arcata. 655 Comment
  UC203898  Umbellularia californica Joseph P. Tracy 1918-9-29 5101 Humboldt South Fork Eel River, 8 mi above the mouth, Myers Ranch South Fork Eel River; Northern Coast Ranges, , Myers Ranch 60 Comment
  RSA701676  Umbellularia californica J. R. Bruff 1930-08 s.n. Humboldt Roadside North of Trinidad California Comment
  UC1239525  Uropappus lindleyi Joseph P. Tracy 1921-4-24 5462 Humboldt slopes and open groves South Fork Eel River (Phillipsville); Northern Coast Ranges, , Phillipsville 121 Comment
  UC153974  Urtica dioica subsp. gracilis J. P. Tracy 1910-10-1 3166 Humboldt immediate vicinity of Eureka 0 Comment
  HSC49505  Utricularia macrorhiza R. York 1979-4-13 225 Humboldt Behind grammar school in Fieldbrook. Comment
  CAS-BOT-BC193959  Vaccinium cespitosum L. B. Kildale 1930-7-11 10204 Humboldt Snow Camp, head of Redwood Creek Comment
  HSC55151  Vaccinium cespitosum G. L. Clifton, Griswold 1979-8-1 12091 Humboldt Near N Trinity Mtn., close to the town of Hoopa. 1798 Comment
  HSC7945  Vaccinium membranaceum J. P. Tracy 1936-8-7 15096 Humboldt Trinity Summit, head of Little Horse-Linto Creek 1372 Comment
  HSC90226  Vaccinium ovatum L. Watson, J. Meninga Mar 1991 20 Humboldt Near Manilla, Mad River Slough and Dunes N of parking lot, W of trail Comment
  HSC90905  Vaccinium ovatum N. D. Dennis 1965-5-5 49 Humboldt 2 mi. N of Trinidad on Hwy. 101 Comment
  POM257944  Vaccinium ovatum H. E. Parks, S. T. Parks 1937-04 5638 Humboldt Spruce Cove, Trinidad. Comment
  SEINET2029498 Image available Vaccinium ovatum H. E. Parks, S. T. Parks 5638 Humboldt Spruce Cove, Trinidad Comment
  HSC99463  Vancouveria hexandra K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-14 117 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  HSC24385  Vancouveria planipetala J. O. Sawyer 1970-6-24 2222 Humboldt Ridge on Big Hill Rd., E of Hoopa 1189 Comment
  UC1126306  Vancouveria planipetala A. E. Wieslander 1931-5-19 207 Humboldt near Orleans; Klamath Forest, Hoopa Quadrangle Comment
  UCSB23564  Vancouveria planipetala Keefe, Joseph 1967-7-8 Humboldt Redwood Forest, Avenue of the Giants, 2.4 miles north of Miranda 121 Comment
  UC120019  Velezia rigida Chandler Humboldt Humboldt Bay Comment
  CDA30233  Verbena lasiostachys M. K. Beyers, I. Shepardson 2009-9-13 240 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
  HSC99387  Veronica americana K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-6-28 36 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  HSC39612  Veronica serpyllifolia subsp. humifusa Thomas W. Nelson, Jane Nelson 1976-6-15 2716 Humboldt Along old trail from lookout to Blocksburg 1585 Comment
  HSC48401  Veronica serpyllifolia subsp. humifusa Brad Klipfel 1973-6-10 90 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  UC147901  Veronica serpyllifolia subsp. humifusa Joseph P. Tracy 1910-4-17 3115 Humboldt Valley of Elk River (region about Humboldt Bay); Northern Coast Region, Humboldt Bay, Elk River 0 Comment
  UC1197463  Vicia americana var. americana J. P. Tracy 1901-5-30 1111 Humboldt immediate vicinity Eureka 0 Comment
  UC160967  Vicia americana var. americana Mrs. M. H. Manning May 1902 Humboldt Hupa Comment
  HSC31755  Vicia americana var. americana Donald Spalinger 1974-5-19 73 Humboldt S of Barry Ridge Rd., 1.5 mi. SW of Kneeland School 762 Comment
  RSA46826  Vicia americana var. americana Doris K. Kildale 1926-3-26 1643 Humboldt Old Fortuna Rd Comment
  RSA20848  Vicia angustifolia Carl B. Wolf 1937-6-18 8888 Humboldt Table Bluff between Humboldt Bay and Eel River. 30 Comment
  RSA91235  Vicia angustifolia F. W. Peirson 1926-7-13 7059 Humboldt Mad River, near Blue Lake Comment
  HSC104455  Vicia hirsuta Jeff Barrett, Keleigh Deitsch, Tessa Purdy 2014-4-13 29 Humboldt Samoa Peninsula, Fairhaven, along south side of Bay Street 5 Comment
  UC1222588  Vicia hirsuta Joseph P. Tracy 1950-6-17 18835 Humboldt Eureka Comment
  UC198656  Vicia hirsuta Joseph P. Tracy 1916-5-31 4689 Humboldt Stitz Creek Northern Coast Ranges, Eel River (along Eel River from South Fork to Scotia) 60 Comment
  UCR104583  Vicia sativa subsp. nigra A. R. Alexander 1998-4-9 10 Humboldt US Highway 101 and Giuntoli Lane, near shopping center, Arcata 152 Comment
  HSC48780  Vicia sativa subsp. nigra Brad Klipfel 1974-5-11 337 Humboldt SW side of Big Lagoon Comment
  HSC15279  Vicia sativa subsp. sativa J. L. Baker 1965-4-2 25 Humboldt Humboldt Meridian, 4 mi. N of Arcata on N Bank Rd. Comment
  RSA518642  Vicia tetrasperma Barbara Ertter, Thomas J. Delendick 1987-5-16 6912 Humboldt Hwy 299, ca 8 mi E of Arcata, 9.5 mi W of Lord Ellis summit. Comment
  HSC3232  Vinca major S. J. Hawks 1965-4-6 85 Humboldt Luffenholtz Beach Comment
  CAS-BOT-BC263945  Viola adunca Elizabeth Parsons Hawver 1915-6-1 s.n. Humboldt Carlotta Comment
  HSC21763  Viola adunca Doris K. Kildale 1926-3-27 1662 Humboldt Gans Prairie - Bald Hills Comment
  UC1761516  Viola adunca Milo S. Baker 1923-7-30 158 Humboldt Iaqua, 1/2 mi from Fredricksons house (near head of Yager Creek) 670 Comment
  HSC98827  Viola adunca var. adunca Cara Witte 2007-6-1 167 Humboldt Horse Mountain Botanical Area. Along Forest Service Road 6N38. 1382 Comment
  HSC41233  Viola cuneata Brad Klipfel 1974-5-8 323 Humboldt Horse Mtn. Comment
  HSC48412  Viola glabella Brad Klipfel 1973-6-10 84 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC64215  Viola glabella J. O. Sawyer, M. A. Ericksen 1979-6-23 3386 Humboldt Slopes below Mill Creek Lakes 1585 Comment
  CAS-BOT-BC536499  Viola glabella Harley P. Chandler 1901-6-1 1285 Humboldt Hupa Indian Reservation, North Coast Ranges 1097 Comment
  HSC38708  Viola hallii J. P. Smith 1976-5-29 8817 Humboldt Horse Mtn. 1402 Comment
  HSC41234  Viola hallii Brad Klipfel 1974-5-8 324 Humboldt Horse Mtn.; E of the towers Comment
  RSA21092  Viola hallii Carl B. Wolf 1937-6-14 8820 Humboldt Kneeland Prairie; North Coast Range. 823 Comment
  UC19300  Viola praemorsa subsp. linguifolia Harley P. Chandler June, 1901 1288 Humboldt Hupa Indian Reservation; North Coast Ranges, Hupa Mountain, Hupa Indian Reservation 1097 Comment
  UC1222513  Viola praemorsa subsp. praemorsa Joseph P. Tracy 1951-5-20 19403 Humboldt near Kneeland School House Comment
  CHSC2036  Viola sempervirens E. Crouch 1929-5-9 Humboldt Redwoods. Comment
  HSC34797  Viola sempervirens John Palmer 1975-4-9 299 Humboldt 40 yds. E of intersection of 17th at Bayview St., Arcata Comment
  HSC47655  Viola sempervirens Sheila Logan 1978-4-10 183 Humboldt Arcata Community Forest, near PSW Experimental Lab Comment
  HSC23625  Viola sheltonii J. O. Sawyer 1971-6-14 2377 Humboldt Above E fork of Horse Linto Creek 1494 Comment
  CAS-BOT-BC199803  Vulpia L. R. Abrams 1926-7-11 6050 Humboldt Mouth of Grizzly Creek on Van Duzon [Duzen] River Comment
  HSC9914  Vulpia microstachys C. S. Chavez 1965-5-1 64 Humboldt On Hwy. 299 2 mi. E of Willow Creek. Comment
  UC181223  Vulpia microstachys var. ciliata Joseph P. Tracy 1913-6-18 4194 Humboldt opposite Buck Mountain (Dinsmore's Ranch); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  UC1103717  Vulpia microstachys var. pauciflora Joseph P. Tracy 1913-6-19 4201 Humboldt opposite Buck Mountain (Dinsmore's Ranch); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  HSC9925  Vulpia myuros D. C. Juve 1964-5-14 Humboldt Camp Tish-Tang, Campbell Cr. Ranger Station, Hwy. 96. Comment
  CAS-BOT-BC185939  Vulpia octoflora var. octoflora Joseph P. Tracy 1929-7-4 8618 Humboldt French Camp Ridge 1066 Comment
  UC1561376  Whipplea modesta Barbara Ertter with Thomas J. Delendick 1987-5-16 6943 Humboldt on s side of road above Willow Creek (Hwy 299 ca 3 mi e of Berry Summit, ca 20 air mi e of Arcata) 800 Comment
  UC1223300  Wyethia angustifolia Joseph P. Tracy 1950-9-10 19357 Humboldt Bear River Ridge 609 Comment
  UC128618  Wyethia angustifolia P. E. Goddard Jul 1910 Humboldt Hupa Valley Comment
  UC129416  Wyethia angustifolia Harley P. Chandler June 1901 1494 Humboldt Klamath River North Coast Ranges, Klamath River 426 Comment
  HSC100451  Wyethia angustifolia Carl C. Marshall Jul 1886 261 Humboldt Coast Range. Comment
  HSC12017  Xanthium strumarium Wilbur Peterson 1970-10-31 94 Humboldt Scotia bluffs, edge of Eel River. Comment
  HSC53967  Xerophyllum tenax Griswold, Butler 1979-7-11 7023 Humboldt Near Snow Camp Lake, close to the town of Willow Creek. 1393 Comment
  UC303043  Xerophyllum tenax Joseph P. Tracy 1926-5-2 7445 Humboldt Willow Creek Canyon; Northern Coast Ranges, Willow Creek Canyon 609 Comment
  CAS-BOT-BC527072  Xerophyllum tenax B. H. Mace; Frank Graham 1922-10-1 38737 Humboldt Brannan Mt., Trinity Forest Comment
  CAS-BOT-BC527077  Xerophyllum tenax Joseph P. Tracy 1937-8-15 15665 Humboldt French Camp 1066 Comment
  HSC79498  Zeltnera muehlenbergii Kenneth Clark 1979-7-1 454 Humboldt Shelter Cove, Dead Man's Gulch 9 Comment
  UC249566  Zigadenus micranthus var. micranthus Joseph P. Tracy 1921-5-30 5484 Humboldt Kneeland Prairie Northern Coast Ranges, Kneeland Prairie 762 Comment
  CAS-BOT-BC534318  Zigadenus venenosus var. venenosus Carl B. Wolf 1937-6-14 8817 Humboldt North Coast Range, Kneeland Prairie 822 Comment
  CDA1423  Zostera japonica Gordon Leppig, David Couch 2006-11-17 2396 Humboldt Arcata Bay. Mudflat W of City of Arcata oxidation ponds, upper intertidal zone, 2 m from dike. 0 Comment
  HSC62988  Zostera marina David Wheeler 1979-4-22 78 Humboldt Mad River Slough, 1 mi. W of intersection of Mad River Rd. and Iverson Rd. Comment
  HSC21902  Zostera marina S. Estes 1964-4-4 17 Humboldt N Humboldt Bay Comment



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