Search Results — 2000 specimen records retrieved (1396 records with coordinates)
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(For large data reqests, please contact Jason Alexander, jason_alexander@berkeley.edu.)

 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/cch_archive/).
 Records are made available under the CCH Data Use Terms.

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A yellow cell in the column headed "?", for records with coordinates, indicates a discrepancy with respect to range as specified in the eFlora. Read more ...
? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  HSC102514  Abies concolor M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-28 1500 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1106 Comment
  HSC102605  Abies concolor M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-28 1592 Humboldt Slopes above Bret Hole and below trail 6E18, 1.5 km SSW of Trinity Summit. 1778 Comment
  HSC55100  Abies concolor G. L. Clifton 1979-7-31 11814 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  HSC55196  Abies concolor G. L. Clifton, Griswold 1979-8-2 12292 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  HSC72799  Abies concolor Gail Newton 1980-6-17 213 Humboldt Near Onion Mtn. 1341 Comment
  UC502908  Abies concolor Joseph P. Tracy Jul 16 1930-Jul 19 1930 8962 Humboldt in fir forest near McKay Camp; Northern Coast Ranges, South Fork Mountain 1676 Comment
  UC667970  Abies grandis Joseph P. Tracy 1937-6-20 15354 Humboldt 10 mi up stream from the mouth Bear River 152 Comment
  HSC73072  Abies procera Gail Newton 1980-7-24 1786 Humboldt Near Somes Mtn. 1615 Comment
  RSA168959  Abies procera G. L. Anderson 1962-8-21 5 Humboldt Six Rivers National Forest; Horse Trail Ridge, SW slope. 1829 Comment
  SD42285  Abronia latifolia Carl B. Wolf 1937-9-9 3064 Humboldt Coast, 2 miles south of Cape Mendocino 6 Comment
  POM87959  Acer circinatum L. R. Abrams 1922-6-27 8298 Humboldt Prairie Creek, 4 miles north of Orick Comment
Read comments
Feb 25 2015
  UC205487  Acer circinatum Joseph P. Tracy 1920-10-24 5403 Humboldt Mad River bottom near Blue Lake (Northern Coast Ranges); , Mad River bottom nr Blue Lake 60 Comment
  CAS-BOT-BC331590  Acer macrophyllum Joseph Andorfer Ewan 1937-7-1 10435 Humboldt Stephan Grove on Eel River, N of Garberville Comment
  UC205627  Acer macrophyllum Joseph P. Tracy 1920-10-24 5404 Humboldt near Korbel (North Fork of Mad River); Northern Coast Ranges, North Fork of Mad River 60 Comment
  CAS-BOT-BC28587  Achillea millefolium David D. Keck 1938-8-5 4775 Humboldt Big Lagoon Comment
  UC1125415  Achillea millefolium H. L. Person 1931-7-30 19358 Humboldt Fieldbrook; Eureka Quad. Comment
  CHSC19744  Achlys triphylla D. E. Anderson 1965-5-1 3575 Humboldt 4--5 miles west of jct. Bluff Creek Rd. and Hw. 96, along Bluff Cr. Rd. Comment
  HSC73179  Achlys triphylla M. A. Baker 1980-5-18 1295 Humboldt Near Black Mtn. 1006 Comment
  CAS-BOT-BC400019  Achlys triphylla Doris K. Kildale 1926-4-30 1923 Humboldt Camp Grant, South Fork of Eel River Comment
  CAS-BOT-BC400021  Achlys triphylla W. R. Dudley 1899-6-18 s.n. Humboldt Near grade descending to Eel River Comment
  UC526752  Achnatherum lemmonii Joseph P. Tracy 1913-6-22 4260 Humboldt opposite Buck Mountain (Dinsmore's Ranch); valley of Van Duzen River 762 Comment
  UCD50521  Achnatherum lemmonii Joseph P. Tracy 1951-6-26 19598 Humboldt At Board Camp Mountain, north side, at extreme head of Redwood Creek Comment
  UCD50710  Achnatherum lemmonii G. L. Stebbins Jr.; G. L. Church 1941-5-27 3117 Humboldt 10.3 miles west of Dinsmore's, on road to Bridgeville. Humboldt County. Comment
  RSA10033  Achnatherum occidentale subsp. californicum Joseph P. Tracy 1932-7-17 10667 Humboldt Trinity Summit, Ridges east of Corral Prairie 1829 Comment
  UC249844  Achyrachaena mollis Joseph P. Tracy 1924-6-1 6688 Humboldt near, on Lone Star Road Iaqua Buttes; Northern Coast Ranges 609 Comment
  UCD103923  Acmispon americanus var. americanus Tofsrud 1948-9-1 s.n. Humboldt Road between Horse Mt. and Grouse Mt. 1371 Comment
  HSC37971  Acmispon micranthus Peter Sorensen 1976-7-15 Humboldt Woodley Island Comment
  HSC71163  Acmispon micranthus Thomas W. Nelson 1977-5-30 3409 Humboldt Base of Eight Mile Ridge upstream from Anderson's Ford. 701 Comment
  UCD104287  Acmispon parviflorus Linda M. Barker 1976-4-30 1410 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  UCD137891  Acorus calamus Malcolm A. Nobs; S. Galen Smith 1949-8-9 1242 Humboldt on south side of the town of Blue Lake. Comment
  HSC56188  Actaea rubra Gilbert Muth 1979-8-1 12125 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1677 Comment
  UC164803  Adenocaulon bicolor Joseph P. Tracy 1909-7-31 3042 Humboldt Kneeland Prairie; Northern Coast Ranges, Kneeland Prarie 762 Comment
  CHSC21826  Adiantum aleuticum D. Joley 1967-8-17 Humboldt Found 10 mi e of Fortuna. Comment
  CAS-BOT-BC62292  Adiantum aleuticum L. B. Kildale 1930-6-1 9745 Humboldt Klamath River at Weitchpec Comment
  SEINET3823281 Image available Aesculus californica Joseph P. Tracy 1921-10-22 5978 Humboldt Bridgeville 305 Comment
  UC1222303  Aesculus californica Joseph P. Tracy 1950-6-21 18856 Humboldt w side mouth of South Fork (near the South Fork); Trinity River Valley 182 Comment
  UC249587  Aesculus californica Joseph P. Tracy 1921-10-22 5978 Humboldt Bridgeville; Northern Coast Ranges 304 Comment
  HSC53932  Agastache urticifolia Griswold, Butler 1979-7-11 6950 Humboldt Near Snow Camp Mtn., close to the town of Willow Creek. 1320 Comment
  HSC75954  Agoseris grandiflora Overton, Butler 1979-7-24 9734 Humboldt Near Black Rock, close to the town of Willow Creek. 1554 Comment
  HSC56444  Agoseris heterophylla Griswold, Butler 1979-7-12 7191 Humboldt Near Groves Prairie, close to the town of Willow Creek. 1256 Comment
  UC582745  Agoseris heterophylla var. heterophylla Joseph P. Tracy 1930-6-21 8775 D Humboldt Larrabee Valley; Northern Coast Ranges 701 Comment
  UC582739  Agoseris heterophylla var. heterophylla H. E. Parks and Joseph P. Tracy 1934-6-27 13261 Humboldt in open places Grouse Mt. 1432 Comment
  UC1239509  Agoseris hirsuta Joseph P. Tracy 1923-6-18 6280 1/2 Humboldt Bear River Ridge Northern Coast Ranges, Bear River Ridge 304 Comment
  HSC32098  Agoseris retrorsa D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-17 5703 Humboldt McKeown Ranch, N of Dinsmore Comment
  RSA249387  Agoseris retrorsa D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5586 Humboldt Mt. Lassic and 2 smaller peaks to immediate E. 1768 Comment
  UC1103369  Agrostis alba J. P. Tracy 1900-9-2 934 Humboldt immediate vicinity Eureka 0 Comment
  HSC102149  Agrostis exarata M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-3 1056 Humboldt Patterson Meadows 1566 Comment
  UC1145153  Agrostis exarata Joseph P. Tracy 1936-6-28 15030 Humboldt in bog Bald Mountain, Lake Prairie 1066 Comment
  UC186904  Agrostis exarata Joseph P. Tracy 1911-7-7 3386 Humboldt 3 mi nw Junction of Willow Creek with Trinity River; Northern Coast Ranges 914 Comment
  HSC76547  Agrostis gigantea Teresa Prendusi 1981-7-23 341 Humboldt Near Black Mtn. 890 Comment
  CAS-BOT-BC139496  Agrostis hallii Henry M. Pollard 1948-7-19 s.n. Humboldt River Road, Orleans to Red Cap Creek. Comment
  HSC89506  Agrostis hallii M. Roantree 1985-5-30 71 Humboldt SW side of Trinidad Head. Comment
  UC1145078  Agrostis hallii Joseph P. Tracy 1938-7-4 15983 Humboldt valley South Yager Creek; Valley of South Yager Creek 762 Comment
  UCD52675  Agrostis hallii P. B. Kennedy 1923-6-14 305 Humboldt Stoddard store, near Garberville. Comment
  CAS-BOT-BC139452  Agrostis hyemalis Doris K. Kildale 1926-9-5 2624 Humboldt Lasseck's Peaks. Near Canal Camp. 1661 Comment
  CAS-BOT-BC138875  Agrostis microphylla A. A. Heller 1923-7-8 13772 Humboldt Near Fortuna. Comment
  HSC35455  Agrostis microphylla J. D. Ackerman 1975-8-2 603 Humboldt Intersection of Indianola Cutoff and US Hwy 101. 3 Comment
  CAS-BOT-BC139132  Agrostis oregonensis Joseph P. Tracy 1934-7-18 13452 Humboldt North Coast Ranges. Grouse Mountain. 1524 Comment
  UC552730  Agrostis pallens Joseph P. Tracy 1935-7-28 14335 Humboldt head Brett Hole (rocky exposed places); Trinity Summit 1828 Comment
  HSC8810  Agrostis stolonifera C. B. Wolf 1927-8-27 1189 Humboldt Eureka Bay, on the road from Eureka to Arcata. Comment
  HSC8849  Aira caryophyllea Rudolf W. Becking 1961-7-3 Humboldt Korbel Kerr Ranch study plots Comment
  UC526682  Aira caryophyllea Joseph P. Tracy 1933-6-13 12581 Humboldt near summit on road from Hoopa westward to Bair's; Hoopa Mountain 1066 Comment
  UCD55739  Aira caryophyllea A. A. Beetle; G. L. Stebbins 1942-6-3 3587 Humboldt Near Garberville, 1.4 miles on road to Harris. Comment
Read comments
Jan 21 2009
  HSC102643  Aira elegans J. P. Smith 2009-5-31 12605 Humboldt Bald Hills Road. Comment
  UC50681  Aira elegantissima Joseph Burtt Davy 1899-6-19 5684 Humboldt Hupa Mountain Comment
  HSC42389  Allium amplectens Dale McNeal 1977-6-6 2046 Humboldt Beside the Bridgeville-Kneeland Rd., 9.4 mi. N of Bridgeville Comment
  UC677684  Allium amplectens C. C. and S. K. Harris 1936-6-24 645 Humboldt at point where road from Bridgeville to Dinsmore crosses the Little Van Duzen River Little Van Duzen River 710 Comment
  UC14987  Allium bolanderi Mrs. M. H. Manning 1900-1 Humboldt near Hupa Comment
  CAS-BOT-BC462974  Allium bolanderi L. R. Abrams 1918-6-15 7115 Humboldt Brannan Mt. near Willow Creek 1371 Comment
  HSC100546  Allium campanulatum Carl C. Marshall Jun 1886 304 Humboldt Trail E of Hoopa. Comment
  HSC38518  Allium falcifolium D. E. Anderson, J. P. Smith 1971-6-18 - 1082 Humboldt Horse Mtn. Comment
  HSC76218  Allium falcifolium Overton, Butler 1979-7-24 9708 Humboldt Near Black Rock 1554 Comment
  UC1198201  Allium falcifolium Joseph P. Tracy 1933-7-25 12891 Humboldt Grouse Mountain 1524 Comment
  RSA46682  Allium falcifolium Doris K. Kildale 1937-7-18 15132 Humboldt Horse Mt. Comment
  HSC56339  Allium serra Griswold, Butler 1979-7-10 6224 Humboldt Near Kinsey Ridge, close to the town of Willow Creek 1244 Comment
  OBI35866  Allium siskiyouense David J. Keil 1983-7-2 17327 Humboldt Horse Mountain Summit SW of Willow Creek. Comment
  UCR275114  Allium triquetrum Charity A. Hartshorn 2016-4-24 08 Humboldt Arcata Marsh & Wildlife Sanctuary, east end of Klopp Lake 7 Comment
  SDSU11522  Allium unifolium unknown, Santa Ana Botanic Gaden 1940-5-20 Humboldt Coast Ranges Monterey Comment
  CAS-BOT-BC171311  Alnus incana subsp. tenuifolia Milo S. Baker 1927-8-21 2487 a Humboldt Brush Mt. 914 Comment
  UC774997  Alnus incana subsp. tenuifolia Carl B. Wolf 1937-8-13 9268 Humboldt 12 mi e Hoopa Valley (on new road toward Trinity Summit); North Coast Range 1676 Comment
  JEPS58618  Alnus rhombifolia W. L. Jepson 1902-7-29 2123 Humboldt Supply Creek Hupa Valley 243 Comment
  HSC99493  Alnus rubra K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-14 153 Humboldt Near North Trinity Mtn, 11. 9 mi east of Hoopa on Big Hill Rd (8N01), at Box Camp, Six Rivers National Forest. 1372 Comment
  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
  HSC8898  Alopecurus geniculatus W. F. Cartwright 1965-5-20 77 Humboldt 5 mi. S of Arcata on Old Arcata Rd. Comment
  CAS-BOT-BC13671  Ambrosia artemisiifolia H. M. Pollard 1947-8-27 s.n. Humboldt Near Orleans Comment
  SEINET11855057  Ambrosia artemisiifolia J. P. Tracy 1950-1 19313 Humboldt Frank Graham's place. Trinity River Valley, at Willow Creek 152 Comment
  CAS-BOT-BC13705  Ambrosia chamissonis H. E. Parks 1941-8-1 24181 Humboldt Big Lagoon Comment
  CHSC56516  Ambrosia chamissonis L. P. Janeway 1983-9-24 704 Humboldt Sand-spit at Big Lagoon. 3 Comment
  CAS-BOT-BC13707  Ambrosia chamissonis A. A. Heller 1924-7-21 13869 Humboldt Salt marsh at Eureka Comment
  SD39999  Ambrosia chamissonis Edith A. Purer 1932-7-27 4144 Humboldt Samoa, near Arcata on sand dunes Comment
  CAS-BOT-BC142884  Amelanchier alnifolia var. semiintegrifolia Doris K. Kildale 1927-7-17 3756 Humboldt Bug Creek 792 Comment
  CAS-BOT-BC142893  Amelanchier alnifolia var. semiintegrifolia Volney Rattan 1878-1-1 s.n. Humboldt Unspecified Comment
  HSC70685  Amelanchier alnifolia var. semiintegrifolia Gail Newton 1980-7-15 1574 Humboldt Near Sims Mtn. 1311 Comment
  HSC24391  Amelanchier pallida J. O. Sawyer 1970-6-24 2218 Humboldt Ridge on Big Hill Rd., E of Hoopa 1189 Comment
  CAS-BOT-BC143014  Amelanchier utahensis H. E. McMinn 1922-8-5 343 Humboldt Along Van Duzen River Comment
  UC902150  Amelanchier utahensis Joseph P. Tracy 1946-7-13 17618 Humboldt 5 mi e Carlotta (open flat by old Strong's District School House) 60 Comment
  HSC39948  Ammophila arenaria Linda M. Barker 1976-6-22 1624 Humboldt 3 mi. W of Arcata Comment
  HSC8841  Ammophila arenaria J. W. Bosworth 1965-5-20 54 Humboldt .25 mi. S of Samoa on the Samoa Rd. Comment
  UC1239643  Amsinckia intermedia Joseph P. Tracy 1936-6-9 14897 Humboldt hills between the coast and Petrolia 213 Comment
  HSC32503  Anagallis arvensis David Johnson 1974-5-2 73 Humboldt Mad River Co. Park, mouth of the Mad River; by the parking lot Comment
  HSC49034  Anagallis arvensis Patricia Shesgreen 1978-5-5 67 Humboldt 17.4 mi. S of Ferndale on Mattole Rd. 91 Comment
  HSC57007  Anaphalis margaritacea Overton, Butler 1979-7-24 9594 Humboldt Near Titlow Hill, close to the town of Willow Creek 1250 Comment
  UC54004  Anaphalis margaritacea Chesnut and Drew 1888-8-8 Humboldt Arcata Comment
  UC582520  Anaphalis margaritacea Joseph P. Tracy 1934-8-31 13649 Humboldt Kneeland Prairie 762 Comment
  UC963845  Anaphalis margaritacea H. E. Parks and S. T. Parks 1943-8-1 24237 Humboldt along highway Stone Lagoon Comment
  CAS-BOT-BC45138  Anaphalis margaritacea Huron H. Smith 1911-6-6 3793 Humboldt Vances Camp 19 Comment
  SEINET11855265  Anaphalis margaritacea J. P. Tracy 1950-1 19363 Humboldt On foothills of Cape Ridge, .5 mi S of town, along coast road, 1 mile inland from Cape Mendocino 61 Comment
  SEINET6734966 Image available Anaphalis margaritacea H. E. Parks, S. T. Parks 1943-1 24237 Humboldt North Coast Ranges, along highway, Stone Lagoon Comment
  UC535706  Anemone deltoidea Eleanor Armstrong 1934-5-17 Humboldt Garden Club Grove Comment
  HSC97491  Anemone oregana C. Witte 2007-5-17 25 Humboldt Horse Mountain Botanical Area. Forest Service Road 6N18. Near utility towers. 1483 Comment
  HSC56311  Angelica arguta Overton, Butler 1979-8-2 12641 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  JEPS14169  Angelica genuflexa Joseph P. Tracy 1937-8-22 15670 Humboldt 2 mi s of Fields Landing 6 Comment
  CAS-BOT-BC221420  Angelica hendersonii Carl B. Wolf 1937-9-9 9304 Humboldt Coast, 2 mi. So. of Cape Mendocino 6 Comment
  UC1197380  Angelica hendersonii Joseph P. Tracy 1936-8-17 15156 Humboldt Table Bluff 91 Comment
  UC562549  Angelica hendersonii Joseph P. Tracy 1930-7-21 8896 Humboldt Cape Mendocino, south of point of the Cape Cape Mendocino 3 Comment
  UCD127224  Angelica hendersonii Joseph DiTomaso 1980-6-29 1636 Humboldt south side of Elkshead. 2 miles north of Trinidad. Comment
  SD109161  Angelica lucida Joseph M. DiTomaso 1980-6-7 1572 Humboldt Elkshead, north of Trinidad. Comment
  UC642300  Angelica tomentosa Joseph P. Tracy 1939-8-16 16409 Humboldt Horse Mountain 1432 Comment
  CAS-BOT-BC271492  Anisocarpus madioides Doris K. Kildale 1928-5-19 5118 Humboldt Chalk Mountain Comment
  UC169316  Anisocarpus madioides Joseph P. Tracy 1908-6 2878 Humboldt opposite Buck Mountain (Valley of Van Duzen River); Northern Coast Ranges 762 Comment
  HSC44340  Antennaria suffrutescens Brad Klipfel 1975-6-17 682 Humboldt Horse Mtn. Comment
  HSC97641  Antennaria suffrutescens Cara Witte 2007-6-12 242 Humboldt Horse Mountain Botanical Area. Near mine area. Forest Service Road 6N38. 1311 Comment
  UC1222876  Antennaria suffrutescens Joseph P. Tracy 1947-7-9 17864 Humboldt Horse Mountain 1432 Comment
  HSC33171  Anthemis cotula Thomas W. Nelson 1973-8-19 1111 Humboldt McKeown Ranch N of Dinsmore, floodplain of Mad River Comment
  BLMAR361  Anthemis cotula Jennifer Anthony-Wheeler 2003-5-21 361 Humboldt South Spit, Disturbed area on west side of road 9 Comment
  SEINET11853738  Anthemis cotula J. P. Tracy 1946-1 17643 Humboldt Eel River at mouth of Van Duzen River Comment
  HSC31786  Anthoxanthum odoratum Donald Spalinger 1974-4-20 21 Humboldt Across from 1756 Ridgewood Dr. 122 Comment
  HSC8938  Anthoxanthum odoratum W. F. Nickel 1965-3-17 Humboldt Humboldt State University campus, behind wildlife building Comment
  HSC8943  Anthoxanthum odoratum R. V. Papike 1962-5-25 31 Humboldt Above Humboldt State University campus 91 Comment
  HSC104450  Anthriscus caucalis Jeff Barrett, Keleigh Deitsch, Tessa Purdy 2014-4-13 3 Humboldt Samoa Peninsula, Fairhaven, along south side of Bay Street 5 Comment
  RSA249385  Antirrhinum vexillocalyculatum subsp. breweri Paul W. Shields 1955-9-25 s.n. Humboldt 17 mi. SE Willow Creek. Comment
  HSC99426  Aquilegia formosa K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-7 75 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  POM118664  Aquilegia formosa var. truncata Marcus E. Jones 1924-4-25 s.n. Humboldt Garberville. Comment
  HSC40232  Arabidopsis thaliana J. P. Smith, J. O. Sawyer 1976-5-2 8626 Humboldt 3.96 mi. N of junction with Hwy. 299 on Hwy. 96 Comment
  UC162360  Arabis glabra Joseph P. Tracy 1908-6 2711 Humboldt opposite Buck Mountain; Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  CDA38202  Aralia californica T. Gallion & M. S. Bergseng 1959-7-23 2816 Humboldt Red Gap Road, 3 miles east of Hoopa. 0 Comment
  UCD128220  Aralia californica B. L. Kay 1954-8-26 s.n. Humboldt 5 miles west of Gaberville. Comment
  CAS-BOT-BC128698  Arbutus menziesii Doris K. Kildale 1927-12-1 4210 Humboldt Klamath River at Orleans Comment
  HSC7592  Arbutus menziesii J. W. Johnson 1962-4-2 1416 Humboldt In the woods near Lanphere Lane, Christenson Farm, Samoa Peninsula Comment
  UC1222643  Arbutus menziesii Joseph P. Tracy 1951-5-20 19401 Humboldt near Ashfield Ridge (Kneeland Prairie); Kneeland Prairie 762 Comment
  UC154180  Arbutus menziesii P. E. Goddard 1901-7-12 65 Humboldt Hupa Valley Comment
  UC412751  Arbutus menziesii Mrs. M. H. Manning Apr. 1902 Humboldt Comment
  CAS-BOT-BC407747  Arceuthobium abietinum Doris K. Kildale 1926-9-5 2634 Humboldt Lasseck's Peaks, between Goat Camp and Signal Peak 1661 Comment
  HSC100848  Arctostaphylos canescens J. P. Smith, J. O. Sawyer 2010-5-4 12813 Humboldt Along Bald Hills Road. 930 Comment
  SEINET2033691 Image available Arctostaphylos canescens Joseph P. Tracy 1941-4-11 16861 Humboldt Willow Creek Canyon along Trinity Highway 610 Comment
  JEPS118166  Arctostaphylos canescens subsp. canescens Dean W. Taylor 2009-7-14 20676 Humboldt vicinity Huestis Prairie (watershed Redwood Creek) 975 Comment
  SEINET11995492  Arctostaphylos canescens var. sonomensis W. Knight, Knight, I. 1988-1 s.n. Humboldt on embankment between Summit Rd junction & electronic towers at Summit, Horse Mt. Recreational Area Comment
  CAS-BOT-BC23739  Arctostaphylos columbiana C. Hart Merriam 1921-8-18 s.n. Humboldt Big Lagoon Comment
  HSC68214  Arctostaphylos columbiana J. P. Smith, J. O. Sawyer 1975-4-6 8052 Humboldt 3 mi. N of Whitehorn, across from the CA Dept. of Forestry Fire Station Comment
  JEPS19869  Arctostaphylos columbiana Joseph P. Tracy 1923-3-31 6168 Humboldt around Humboldt Bay; Northern Coast Region, Table Bluff 60 Comment
  JEPS38947  Arctostaphylos columbiana Joseph P. Tracy 1927-8-14 8331 Humboldt Big Lagoon 152 Comment
  RSA622680  Arctostaphylos columbiana Jon E. Keeley 1996-10-13 27769 Humboldt Bald Hills Road, eastern end of Redwood National Park, 25 km west of Highway 96, north of Eureka. 700 Comment
  RSA622696  Arctostaphylos columbiana Jon E. Keeley, John Sawyer 1996-10-12 27680 Humboldt Along Highway 101 at edge of cutover redwood forest, 6 km south of Drury Scenic Parkway and Prairie Creek Redwoods State Park, north of Eureka. 320 Comment
  UC1174868  Arctostaphylos columbiana P. C. Everett and E. K. Balls 1959-10-25 23965 Humboldt 8.8 mi ne from Blue Lake (US Hwy 299, Arcata to Willow Creek) 274 Comment
  UC1198652  Arctostaphylos columbiana Joseph P. Tracy 1923-2-18 6143 Humboldt Patrick's Point Northern Coast Ranges 30 Comment
  UC1198663  Arctostaphylos columbiana Joseph P. Tracy 1934-2-22 13138 Humboldt vicinity of Trinidad Northern Coast Region 60 Comment
  UC154196  Arctostaphylos columbiana Joseph Burtt Davy and Walter C. Blasdale 1899-5 Humboldt Fruitland Comment
  UC585912  Arctostaphylos columbiana Joseph P. Tracy 1932-2-28 9772 Humboldt Table Bluff Northern Coast Region, around Humboldt Bay 60 Comment
  SEINET11977760  Arctostaphylos columbiana J. P. Tracy 1950-1 19252 Humboldt Grasshopper Peak, Bull Creek State Park Comment
  JEPS38971  Arctostaphylos hookeri subsp. montana Joseph P. Tracy 1936-8-2 15075 Humboldt French Camp Ridge Northern Coast Ranges 1066 Comment
  RSA632789  Arctostaphylos knightii Jon E. Keeley 1996-10-13 27764 Humboldt Bald Hills Road, eastern end of Redwood National Park, 25 km west of Highway 96, north of Eureka. 700 Comment
  BLMAR54  Arctostaphylos manzanita Jennifer Anthony-Wheeler 1994-2-14 54 Humboldt King range, growing along KR rd approx 2mi from rd end 228 Comment
  CAS-BOT-BC24364  Arctostaphylos manzanita subsp. manzanita Doris K. Kildale 1926-8-22 2575 Humboldt Bald Hills near Imbinson's. Comment
Read comments
Sep 27 2020
  CAS-BOT-BC38832  Arctostaphylos manzanita subsp. manzanita Doris K. Kildale 1927-5-7 3110 Humboldt Elk Ridge, near Eel Rock Comment
  CAS-BOT-BC38836  Arctostaphylos manzanita subsp. manzanita C. Hart Merriam 1926-9-15 s.n. Humboldt Junction, South fork of the Trinity and Trinity River Comment
  CAS-BOT-BC38839  Arctostaphylos manzanita subsp. manzanita C. Hart Merriam 1920-9-14 s.n. Humboldt Mts. near Willow Creek (1st ridge west of Trinity River on Willow Creek Road) Comment
  JEPS38938  Arctostaphylos manzanita subsp. manzanita Joseph P. Tracy 1933-4-2 10949 Humboldt Willow Creek Trinity River Valley 152 Comment
  UC1225895  Arctostaphylos manzanita subsp. manzanita Joseph P. Tracy 1942-7-18 17285 Humboldt Garberville 152 Comment
  UC249507  Arctostaphylos manzanita subsp. manzanita Joseph P. Tracy 1922-4-30 6043 Humboldt mts. slopes along road between Three Creeks and mouth of Willow Creek; Northern Coast Ranges, Gopher Camp <Langdons place> 762 Comment
  SEINET11993007  Arctostaphylos nevadensis S. W. Edwards 1985-1 85 -52 Humboldt Horse Mt., due E Arcata 20 mi airline Comment
  UC32672  Arctostaphylos nevadensis Chesnut and Drew 1888-7-21 Humboldt e slope S. Fork Mt. Comment
  CAS-BOT-BC43993  Arctostaphylos uva-ursi Robert F. Thorne; P. Everett 1965-8-5 35156 Humboldt Samoa Dunes 3 Comment
  CAS-BOT-BC47208  Arctostaphylos uva-ursi Doris K. Kildale 1927-3-25 3010 Humboldt Humboldt Hill, near Humboldt Bay. Comment
  RSA166376  Arctostaphylos uva-ursi R. F. Thorne 1957-9-3 19024 Humboldt Patrick's Point State Park. Comment
  UC1225933  Arctostaphylos uva-ursi Joseph P. Tracy 1945-3-30 17502 Humboldt Eureka 45 Comment
  UCD52031  Arctostaphylos uva-ursi T. I. Storer 1931-7-1 2217 Humboldt Samoa, Humboldt Co. Comment
  RSA518163  Arctotheca calendula G. D. Barbe, T. C. Fuller 1989-6-8 4321 Humboldt 3.4 miles west of Main Street, on Centerville Beach road, Ferndale. Comment
  CAS-BOT-BC137570  Aristida oligantha Joseph P. Tracy 1933-8-27 13000 Humboldt Robertson's Range. Vicinity of Garberville. 121 Comment
  CAS-BOT-BC64625  Armeria maritima subsp. californica W. R. Dudley 1899-6-1 723 Humboldt Eureka Peninsula. Comment
  HSC22493  Armeria maritima subsp. californica S. V. Thompson 1967-7-24 19 Humboldt Back from beach Comment
  RSA245204  Armeria maritima subsp. californica Jerry Parker 1968-10-14 29 .1 Humboldt Mckinleyville Beach. Comment
  RSA245251  Armeria maritima subsp. californica David K. Smith 1968-10-11 6 Humboldt 3 mi S of Trinidad. Comment
  HSC70755  Arnica cordifolia R. York 1980-5-17 528 Humboldt Near Le Perron Peak 1066 Comment
  RSA167206  Arnica latifolia Joseph P. Tracy 1942-6-23 17236 Humboldt Near Box Camp 1463 Comment
  UC302175  Arnica latifolia Mrs. L. B. Kildale 1926-4-25 Humboldt Sugar Bowl Mt. Trinity River 457 Comment
Read comments
Mar 1 2007
  HSC97439  Artemisia douglasiana Ivy Watson 2008-9-17 22 Humboldt Mad River Park on West End Rd. beside pumping station 12 Comment
  UC249809  Artemisia dracunculus Joseph P. Tracy 1923-2-25 6148 Humboldt river bar at Carlotta; Van Duzen River 30 Comment
  CHSC68778  Artemisia pycnocephala Vernon H. Oswald 1997-6-5 8542 Humboldt North Spit of Humboldt Bay 3.7 mi south of Hwy. 255, Orvil Wilson Memorial Off-road Vehicle Park opposite the junction of New Navy Base Rd. and Lincoln Ave. 6 Comment
  HSC12354  Artemisia pycnocephala Steve Dorei 1970-10-7 146 Humboldt McKinleyville Comment
  RSA34238  Artemisia pycnocephala C. B. Wolf 1927-8-29 1206 Humboldt Devils' Gate, S of Cape Mendocino. Comment
  HSC4746  Artemisia pycnocephala David Adams 1960-7-17 Humboldt 2 miles S of Samoa 0 Comment
  POM264517  Artemisia pycnocephala H. E. Parks 1941-08 24186 Humboldt Little River State Park Comment
  CAS-BOT-BC97246  Artemisia suksdorfii Doris K. Kildale 1926-8-12 2491 Humboldt Moonstone Beach Comment
  CAS-BOT-BC97242  Artemisia suksdorfii Carl B. Wolf 1937-9-9 9303 Humboldt Coast, 4 1/2 mi. So. of Cape Mendocino 6 Comment
  HSC56131  Aruncus dioicus var. acuminatus G. L. Clifton, Griswold 1979-8-1 11947 Humboldt Near Mill Creek Lakes, close to the town of Hoopa. 1692 Comment
  UC466610  Aruncus dioicus var. pubescens Joseph Burtt Davy and Walter C. Blasdale 1899-5 5722 Humboldt Supply Creek; North Coast Ranges, Hoopa Valley Comment
  HSC24387  Asarum caudatum J. O. Sawyer 1970-6-24 2257 Humboldt S of Mill Creek Gap, FS Rd. 10N02 1433 Comment
  CAS-BOT-BC400536  Asarum caudatum H. E. Parks 1931-3-24 0918 Humboldt Near Orick Comment
  RSA261553  Asarum caudatum Suzanne May 1967-4-15 21 Humboldt On Kneeland Road, 5 miles east of Bridgeville 244 Comment
  RSA296721  Asarum caudatum Clark L. Miller 1979-5-13 1 -129 Humboldt East of Hwy 101 from Seawood Drive. Comment
  UC1197605  Asclepias speciosa Joseph P. Tracy 1911-7-8 3472 Humboldt near mouth Willow Creek; Northern Coast Ranges, Valley of the Trinity River 152 Comment
  UC162774  Aspidotis densa Joseph P. Tracy 1911-7-6 3354 Humboldt along rd between Three Creeks and mouth of Willow Creek; Northern Coast Ranges 762 Comment
  JEPS109802  Astragalus agnicidus Dean W. Taylor 2004-6-22 19115 Humboldt head of Scott Creek, flanks of Mt Baldy, Larabee Creek watershed 731 Comment
  CAS-BOT-BC193138  Astragalus rattanii var. rattanii Frank W. Peirson 1926-7-15 7058 Humboldt Mad River, vicinity of Blue Lake Comment
  UC33313  Astragalus rattanii var. rattanii W. C. Blasdale 1896-6-4 Humboldt Graham's Comment
  UC160968  Astragalus umbraticus Mrs. M. H. Manning 1901-7-27 306 Humboldt near Hupa (Hoopa) (Bald Hills); near Hupa (Hoopa), Bald Hills Comment
  CAS-BOT-BC69522  Athyrium filix-femina subsp. cyclosorum L. R. Abrams 1916-7-18 6109 Humboldt Arcata to Trinidad, 18 mi. along coast. Comment
  HSC55038  Athyrium filix-femina var. cyclosorum Gilbert Muth 1979-7-31 11498 Humboldt Near Tish Tang A Tang Creek, S Fork, close to the town of Hoopa 1417 Comment
  HSC76301  Athyrium filix-femina var. cyclosorum Teresa Prendusi 1981-7-9 176 Humboldt Near Cedar Camp. 1268 Comment
  SD90176  Athyrium filix-femina var. cyclosorum Benjamin C. Stone 1952-6-25 128 Humboldt 15 miles south of Klamath on Highway 101 14 Comment
  HSC976  Athyrium filix-femina var. cyclosorum Francis Winter 1960-4-24 Humboldt Samoa Peninsula 6 mi. W of Arcata Comment
  HSC97550  Atriplex prostrata Ivy Watson 2008-10-11 56 Humboldt Mad river, near river mouth, S bank 6 Comment
  HSC9006  Avena fatua E. W. Styskel 1963-5-19 34 Humboldt 3 mi. SE of Korbel, on Snow Camp Rd. 290 Comment
  POM318604  Baccharis douglasii Patricia Wilder 1968-8-21 4410 Humboldt Northern Coastal arm of Humboldt Bay, NW of Samoa, on E side of train tracks. 3 Comment
  JEPS21315  Baccharis glutinosa W. L. Jepson 1932-7-24 16391 Humboldt Garberville, Tooey Ranch Garberville Comment
  CAS-BOT-BC98031  Baccharis pilularis Carl D. Duncan 1920-9-22 s.n. Humboldt Hoopa Valley Comment
  CAS-BOT-BC98033  Baccharis pilularis Henry M. Pollard 1947-8-30 s.n. Humboldt North river - road near Redcap Creek, Orleans region 1 Comment
  UC535754  Baccharis pilularis Eleanor Armstrong 1934-8-30 1200 Humboldt Richardson Grove 121 Comment
  HSC68262  Baccharis pilularis subsp. consanguinea J. P. Smith 1971-10-6 4963 Humboldt End of Murray Rd. in McKinleyville. Comment
  UC552309  Balsamorhiza deltoidea Joseph P. Tracy 1935-6-16 11282 Humboldt lower nw slope Buck Mountain 792 Comment
  CAS-BOT-BC16363  Barbarea orthoceras Doris K. Kildale 1927-7-22 3828 Humboldt Lassecks Peaks - Coral Goat Camp. 1661 Comment
  HSC7002  Barbarea verna W. F. Nickel 1965-4-22 Humboldt HSU campus between the Wildlife and Biological Science buildings Comment
  HSC95549  Barbarea vulgaris Andrea Pickart 2002-5-24 107 Humboldt CDFG's Mad River Slough Wildlife Area, Arcata Bottoms 0 Comment
  CDA38657  Bellardia trixago B. Villegas/D. Juliano 2010-6-17 PDR# 1535021 -A Humboldt Alderpoint: Garberville - Alderpoint Rd. 0 Comment
  CAS-BOT-BC128915  Berberis aquifolium Alice Eastwood; John Thomas Howell 1937-6-23 4794 Humboldt Near Dinsmore's Comment
  CAS-BOT-BC128917  Berberis aquifolium John Thomas Howell 1949-6-13 910 Humboldt Along trail between Le Perron Flat & Whitey's Peak (east of town of Orleans). 1371 Comment
  UC1198384  Berberis aquifolium var. aquifolium Joseph P. Tracy 1948-9-5 18186 Humboldt on ridge 2 mi e Grove's Prairie (3 mi s of Grizzly Camp) 1524 Comment
  UC774938  Berberis aquifolium var. aquifolium Carl B. Wolf 1937-8-13 9233 Humboldt 8 mi e Hoopa Valley (on new road towards Trinity summit) 1219 Comment
  CAS-BOT-BC75685  Berberis nervosa H. E. McMinn 1922-8-4 336 Humboldt Along Van Duzen River. Comment
  CAS-BOT-BC75687  Berberis nervosa Carl B. Wolf 1927-8-28 1179 Humboldt 13 miles above Blue Lake on the Lord Ellis Road. Comment
  HSC39525  Berberis nervosa Thomas W. Nelson, Jane Nelson 1976-6-15 2715 Humboldt Along old trail from lookout to Blocksburg 1585 Comment
  HSC57110  Berberis nervosa Overton, Butler 1979-7-25 9851 Humboldt Near Ammon Creek, close to the town of Willow Creek. 671 Comment
  CAS-BOT-BC75801  Berberis pinnata Doris K. Kildale 1928-4-29 5971 Humboldt Horse Mountain. Comment
  CAS-BOT-BC75803  Berberis pinnata Doris K. Kildale 1929-3-19 7025 Humboldt Top of Liscom Hill, near Essex. 853 Comment
  RSA246849  Berberis pinnata R. F. Thorne, P. Everett 1965-8-5 35141 Humboldt 5.2 miles N of junction of Horse Mt. and Shelter Cove Roads. 457 Comment
  CDA24403  Berberis pinnata E. C. Whitney 1967-4-1 Humboldt Bear River, Ferndale. 0 Comment
  CAS-BOT-BC412990  Bistorta bistortoides L. B. Kildale 1930-8-10 10531 Humboldt Snow Camp, head of Redwood Creek Comment
  HSC53954  Bistorta bistortoides Griswold, Butler 1979-7-11 7004 Humboldt Near Snow Camp Lake, close to the town of Willow Creek. 1393 Comment
  HSC55017  Bistorta bistortoides Overton, Butler 1979-7-31 11415 Humboldt Near Water Dog Lakes, close to the town of Hoopa 1830 Comment
  HSC37365  Blechnum spicant Gary S. Lester, Roger L. Yearout, Judith G. Dickson 1974-7-24 497 Humboldt Along Lost Man Creek. 38 Comment
  UC1063690  Blechnum spicant H. L. Person 1932-7-19 Humboldt Dolbier Carson Land Lindsay Creek; Eureka Quadrangle Comment
  POM256476  Boisduvalia densiflora Joseph P. Tracy 1938-7-5 16003 Humboldt Carlotta, open flat by old Strong s District School House, 5 miles east of town. 46 Comment
  UCD140030  Bolboschoenus maritimus subsp. paludosus Gordon Leppig 1998-6-25 851 Humboldt Route 101 milemarker 81.60. East side of highway. 2 Comment
  CDA5649  Borago officinalis T. C. Fuller 1958-6-17 598 -58 Humboldt Ferndale. 0 Comment
  HSC70782  Boschniakia strobilacea Gail Newton 1980-7-24 1768 Humboldt Near Somes Mtn. 1615 Comment
  RSA0078565  Boschniakia strobilacea Harley P. Chandler 1901-06 1300 Humboldt Hupa Indian Reservation. 304 Comment
  HSC97981  Boykinia major Cara Witte 2007-7-11 487 Humboldt Waterhole off Forest Service Road 5N10. Approximately 2 miles east of intersection with National Forest 1. 1346 Comment
  CAS-BOT-BC420260  Boykinia occidentalis Ashley C. Browne 1936-6-11 s.n. Humboldt Patrick's Point State Park Comment
  HSC25680  Boykinia occidentalis Tim Baroni 1971-8-1 150 Humboldt 8 mi. E of Petrolia on the Mattole River Comment
  UC1409117  Boykinia occidentalis Robert F. Thorne and P. Everett 1965-8-5 35127 a Humboldt Wailaki Recreation Site 518 Comment
  JEPS49650  Boykinia occidentalis W. L. Jepson 1902-7-11 2012 Humboldt walls South Fork Trinity River (river bank, Martin's Ranch); walls of the South Fork Trinity River, river bank Comment
  UC725902  Boykinia occidentalis A. A. Heller 1937-6-11 15893 Humboldt along U.S. Highway #101 between Bishop Pine Lodge and Big Lagoon; between Bishop Pine Lodge and Big Lagoon Comment
  HSC6581  Brassica rapa Francis Winter 1960-5-14 Humboldt Samoa Peninsula, 6 mi. W of Arcata Comment
  HSC6589  Brassica rapa D. E. Anderson 1962-1-31 1909 Humboldt Blue Lake, near oxidation pond Comment
  JEPS18619  Brickellia californica W. L. Jepson 1936-8-8 17865 Humboldt South Fork Eel River, Richardson Grove Comment
Read comments
Feb 5 2011
  CAS-BOT-BC145428  Briza maxima Joseph P. Tracy 1930-6-15 8758 Humboldt Alder Point. 152 Comment
  SEINET3132624  Briza maxima D. E. Anderson 1965-5-8 3626 Humboldt T6N, R2E, sec 29, about 1 mi E Blue Lake on Hwy 299 Comment
  SEINET10835828  Briza maxima Botany 1985-6-1 BOTANY s.n. Humboldt Gray's falls campground off hwy 299. Found in a sunny, open disturbed site Along the road at the entrance to the campground 241 Comment
  HSC3025  Brodiaea elegans subsp. elegans G. Ghatala 1967-7-27 19 Humboldt Kneeland Comment
  UC15039  Brodiaea terrestris subsp. terrestris J. P. Tracy 1901-6-23 1159 Humboldt immediate vicinity Eureka 0 Comment
  HSC37182  Brodiaea terrestris subsp. terrestris J. D. Ackerman 1974-5-25 263 Humboldt 0.5 mi. S of Lufenholtz County Beach off Scenic Drive between Moonstone Beach and Trinidad Comment
  UC1222694  Brodiaea terrestris subsp. terrestris Joseph P. Tracy 1950-6-15 18771 Humboldt between Pepperwood and Dyerville (Englewood Prairie); Englewood Comment
  RSA728073  Bromus Gary D. Wallace 1979-6-24 1863 Humboldt Brush Mountain Lookout, SW of the town of Willow Creek. 1216 Comment
  SEINET7297864 Image available Bromus breviaristatus Joseph P. Tracy 1950-1 18786 Humboldt Mail Ridge; North of Harris 2 miles 1036 Comment
  UCD57869  Bromus carinatus Joseph P. Tracy 1936-6-17 14946 Humboldt Buck Mountain. 792 Comment
  HSC58761  Bromus carinatus var. carinatus Walter Overton, Marvin Butler 1979-7-26 10101 Humboldt Near Cold Spring, close to the town of Willow Creek. 1417 Comment
  HSC9142  Bromus carinatus var. carinatus W. F. Nickel 1965-3-17 Humboldt Humboldt State College campus behind College Elementary School. Comment
  SEINET201048 Image available Bromus carinatus var. marginatus Harold E. Parks, Joseph P. Tracy 1935-6-8 11268 Humboldt Trinidad Comment
  SEINET200636 Image available Bromus diandrus Joseph P. Tracy 1904-5-1 2042 Humboldt Eureka 0 Comment
  HSC9246  Bromus hordeaceus L. H. Myers 1963-5-17 36 Humboldt W of Lanpheres Rd., Mad River slough area Comment
  UCD58817  Bromus hordeaceus A. H. Shunk 1923-7-12 s.n. Humboldt Briceland. Comment
  UC1145162  Bromus orcuttianus Joseph P. Tracy 1949-7-19 18373 Humboldt Grouse Mountain on Friday Ridge, at Friday's Camp Friday Ridge; Grouse Mountain, , Friday's Camp 1219 Comment
  UC60194  Bromus secalinus Rob. Smalley 1901-8-20 Humboldt Blocksburg Comment
  OBI22448  Bromus sitchensis Joseph P. Tracy 1937-5-31 15318 Humboldt Trinity River Valley, at Willow Crk Comment
  HSC54214  Bromus tectorum Griswold, Butler 1979-7-12 7264 Humboldt Near Cedar Creek, close to the town of Willow Creek 1158 Comment
  SEINET200635 Image available Bromus tectorum Joseph P. Tracy 1925-5-30 7039 Humboldt Larrabee Valley. 701 Comment
  UC1103266  Bromus vulgaris Joseph P. Tracy 1926-6-13 7600 Humboldt near Blue Lake (on Liscom Hill Road); North Coast Ranges, Liscom Hill Road 152 Comment
  UC1131315  Bromus vulgaris H. S. Yates 1936-6-23 5872 Humboldt 3 mi se of Scotia Comment
  RSA484551  Cakile edentula M. B. Dunkle 1936-8-18 4823 Humboldt Moonstone Beach. Comment
  CHSC10120  Cakile maritima J. W. Johnson 1962-4-29 1299 Humboldt Arcata. W.M. Lanphere Farm, Samoa Peninsula. Comment
  UCD114938  Cakile maritima M. Barbour 1969-9-4 s.n. Humboldt West of southern tip of Freshwater Lagoon. Comment
  CAS-BOT-BC36915  Cakile maritima var. maritima Joseph P. Tracy 1940-9-21 16724 Humboldt Near Samoa, on Humboldt Bay. 3 Comment
  RSA232640  Cakile maritima var. maritima Larry E. DeBuhr, P. Everett 1972-5-22 608 Humboldt On the beach at Prairie Creek. Redwoods Sate Park Comment
  HSC74068  Calamagrostis foliosa Joyce Walker 1980-5-7 Humboldt Four Mile Creek Comment
  HSC74184  Calamagrostis koelerioides M. A. Baker 1980-7-23 3140 Humboldt Near Orleans Mtn. 1859 Comment
  JEPS72919  Calamagrostis nutkaensis Lincoln Constance 1934-6-25 923 Humboldt Englewood Bull Creek Region, South Fork Eel River (4 mi n of Dyerville and of n boundary of Humboldt Redwood Park, on Redwood Hwy) Comment
  CAS-BOT-BC80380  Calocedrus decurrens Doris K. Kildale 1925-8-18 1252 Humboldt Trinity Summit - McKay's Cabin 1524 Comment
  HSC67180  Calochortus tolmiei Thomas W. Nelson, James Nelson 1980-6-10 5431 Humboldt Along E side of Red Mtn. 1372 Comment
  CAS-BOT-BC494366  Calochortus tolmiei H. C. Cantelow 1941-4-19 36 Humboldt 2 1/2 mi. n. e. of Cape Town. Open hillside above ocean on rd. to Ferndale from Patrolia. Comment
  POM169967  Calochortus tolmiei Joseph P. Tracy 1917-5-30 4813 Humboldt Sand dunes west of Dows Prairie; Northern Coast Ranges 15 Comment
  UC1197694  Calochortus vestae Joseph P. Tracy 1930-6-29 8811 Humboldt nw slope Buck Mountain 762 Comment
  CAS-BOT-BC175760  Caltha leptosepala Doris Kildale 1931-5-10 10578 Humboldt Snow Camp Comment
  RSA167194  Calycadenia ciliosa Joseph P. Tracy 1948-9-20 18220 Humboldt Hoopa Valley 91 Comment
  RSA47127  Calycadenia ciliosa Doris K. Kildale 1925-8-13 1126 Humboldt Willow Creek 152 Comment
  CAS-BOT-BC273312  Calycadenia fremontii L. R. Abrams 1918-6-16 7133 Humboldt Willow Creek Comment
  UC1199383  Calycadenia fremontii Joseph P. Tracy 1925-7-12 7204 Humboldt near South Fork of Trinity River; Trinity River Valley 304 Comment
  RSA33968  Calycadenia truncata subsp. scabrella Doris K. Kildale 1927-7-3 3656 Humboldt Willow Creek Flat. Comment
  HSC55179  Calyptridium monospermum Gilbert Muth 1979-8-1 12189 Humboldt Near Red Cap Prairie, close to the town of Hoopa 1780 Comment
  HSC40007  Calystegia occidentalis subsp. occidentalis Thomas W. Nelson, Jane Nelson 1976-7-1 2903 Humboldt Along ridge N of Bear Creek 1463 Comment
  UC1222149  Calystegia occidentalis subsp. occidentalis Joseph P. Tracy 1950-6-15 18797 Humboldt 7 mi n Harris (Mail Ridge); n of Harris, Mail Ridge Comment
  UC162767  Calystegia occidentalis subsp. occidentalis Joseph P. Tracy 1911-7-6 3342 Humboldt mountain slopes along road between Three Creeks and Mouth Willow Creek; Northern Coast Ranges, btwn Three Creeks and Willow Creek 762 Comment
  HSC6360  Calystegia soldanella D. E. Anderson 1961-9-2 1774 Humboldt 3 mi. S of Cape Mendocino. 3 Comment
  HSC6368  Calystegia soldanella S. J. Hawks 1965-5-14 61 Humboldt 1 mi. W of Mckinleyville, past the end of Murray Rd. Comment
  LA103753  Calystegia soldanella Robert F. Thorne; P. C. Everett 1965-8-9 35307 Humboldt Big Lagoon 3 Comment
  RSA21032  Calystegia soldanella C. B. Wolf 1937-6-18 8902 Humboldt Centerville Beach. 3 Comment
  RSA296783  Calystegia soldanella Clark L. Miller 1979-5-24 1 -149 Humboldt Sandy Dunes off Somoa Blvd. approx. a half mile from Coast Guard Station Gate. Comment
  HSC47487  Camissonia cheiranthifolia Sheila Logan 1978-4-7 6 Humboldt Samoa Sand Dunes, 1/4 mi. N of Coast Guard Station at N spit of Samoa Peninsula Comment
  HSC59672  Camissonia cheiranthifolia George Kirn 1977-10-14 Humboldt 1/2 mi. NW of Samoa Comment
  RSA79376  Camissonia contorta E. K. Balls, L. W. Lenz 1952-5-12 17202 Humboldt 0.6 mi E of Dinsmore along Hwy 36 from Alton to Red Bluff. Comment
  HSC40377  Camissonia strigulosa Linda M. Barker 1976-4-30 1406 Humboldt 3 mi. W of Arcata Comment
  UC665629  Camissoniopsis cheiranthifolia subsp. cheiranthifolia H. E. Parks August, 1941 24180 Humboldt sand dunes Little River State Park Comment
  CAS-BOT-BC160246  Camissoniopsis cheiranthifolia subsp. cheiranthifolia Doris K. Kildale; L. B. Kildale 1930-3-27 9523 Humboldt Beach near North Jetty Comment
  JEPS11741  Campanula prenanthoides W. L. Jepson 1932-7-26 16413 Humboldt Bull Creek Comment
  SEINET10462972  Campanula prenanthoides Overton 1979-8-2 OVERTON 12621 Humboldt Near Grogan Hole, on the Salmon Mountain quad., close to the town of Hoopa 1554 Comment
  SEINET10462970  Campanula prenanthoides Sandborg 1968-7-19 SANDBORG 54 Humboldt Bluff Creek near Notice Creek, forest floor near road below Notice Creek bridge. T10N R4E Comment
  SEINET10462988  Campanula prenanthoides Van Dke 1931-6-30 VAN DYKE s.n. Humboldt Willow Creek Comment
  SEINET10463114  Campanula prenanthoides Willis L. Jepson 1932-7-26 Jepson 16413 Humboldt BULL CREEK Comment
  SEINET10840309  Campanula prenanthoides Lincoln Constance 1934-6-11 Constance 854 Humboldt HUMBOLDT REDWOOD PARK ABOVE RD OPP. MOUTH BULL CR., DRY S BANK ABOVE RD 250 Comment
  RSA273405  Cardamine breweri var. orbicularis Thomas W. Nelson, J. P. Smith 1976-4-25 2382 Humboldt Humboldt County: T3N, R1N, S29, Brzil Ranch E of Hwy 101 near college of Redwoods. Comment
  CAS-BOT-BC37435  Cardamine californica Lincoln Constance; Reed Clark Rollins 1942-5-20 2998 Humboldt Eel River, 1 mile north of Pepperwood. 45 Comment
  CAS-BOT-BC37437  Cardamine californica A. A. Heller 1937-6-8 15896 Humboldt 3 miles north of Trinidad. Bishop Pine Lodge. Comment
  HSC6687  Cardamine californica S. S. Stutz 1963-3-31 16 Humboldt 7 mi. SE of Arcata on Fickle Hill Rd. Comment
  HSC91613  Cardamine californica E. Mackey 1987-3-1 Humboldt Patrick's Point State Park, by trail to Palmer's Point beach Comment
  UC1536942  Cardamine californica Gordon H. True Jr. 1936-2-26 328 Humboldt e Pepperwood (along Eel River); , e of Pepperwood 91 Comment
  CHSC110707  Cardamine californica var. californica Dean Wm. Taylor 2004-6-24 19143 Humboldt Spike Buck Mountain, north slope thereof. 1432 Comment
  HSC98050  Cardamine californica var. integrifolia Cara Witte 2007-5-8 5 Humboldt Cold Spring. 1/2 mile south of Titlow Hill. 1410 Comment
  HSC6645  Cardamine oligosperma Lincoln Constance 1934-5-31 745 Humboldt S Fork of the Eel River, Bull Creek Flat, along Bull Creek, W boundary of park to Grasshopper Peak, N side of creek Comment
  UC1103807  Cardamine oligosperma Joseph P. Tracy 1911-7-7 3396 Humboldt at the meadows on Mountain Side three mi nw of junction of Willow Creek with Trinity River (near Beebe's Ranch); Northern Coast Ranges, nw jct Willow Creek w/ Trinity River 914 Comment
  CAS-BOT-BC37891  Cardamine oligosperma Doris K. Kildale 1927-3-20 2916 Humboldt Philipsville. Smith Fork of Eel River. Comment
  SD117463  Cardionema ramosissimum Robert F. Thorne 1974-7-29 45077 Humboldt Samoa dunes. Comment
  CAS-BOT-BC282967  Carduus pycnocephalus Kenneth Clark 1980-3-1 502 Humboldt Dead Man's Gulch 15 Comment
  UC562652  Carex abrupta Joseph P. Tracy 1932-7-14 10546 Humboldt Corral Prairie Trinity Summit 1584 Comment
  UC562287  Carex aquatilis var. dives Joseph P. Tracy 1934-7-30 13504 Humboldt along coast in front of South End of Stone Lagoon (Dry Lagoon); Dry Lagoon 6 Comment
  CHSC92463  Carex arcta Gordon Leppig; T. LaBanca 2005-9-21 2320 Humboldt Pacific Lumber Company land. Clark Mountain Fen, Headwaters of Root Creek on northwest side of Clark Mt., UTM Zone 10, 423098E, 4477336N. 400 Comment
  HSC95660  Carex arcta Juha Pykala, D. H. Norris 1987-6-5 1436 Humboldt E of Maple Creek, Lake Prairie 1052 Comment
  JEPS109914  Carex arcta Dean W. Taylor 2006-8-3 19573 Humboldt Lake Prairie; marshy area between the dam and the county road 1057 Comment
  CAS-BOT-BC19216  Carex barbarae Henry M. Pollard 1948-7-29 s.n. Humboldt Near Woodson Mine - Near Orleans. Comment
  HSC43238  Carex bolanderi R. Sutherland 1977-4-5 5477 Humboldt 386 Comment
  HSC44056  Carex bolanderi Thomas W. Nelson, Jane P. Nelson 1977-7-1 3552 Humboldt Along Blanket Creek 1494 Comment
  RSA246870  Carex bolanderi Robert F. Thorne, Percy C. Everett 1965-8-5 35128 Humboldt Wailaki Recreation site. 518 Comment
  RSA88693  Carex bolanderi F. W. Peirson 1932-7-7 10261 Humboldt Willow Creek, a few miles above the town of that name. Comment
  SEINET10706572  Carex bolanderi Huron H. Smith 1911-1 Smith 3834 Humboldt Comment
  SEINET10646885  Carex buxbaumii Robert F. Thorne 1965-9-8 Thorne 35293 Humboldt Big Lagoon. 3 Comment
  CAS-BOT-BC34980  Carex densa Joseph Prince Tracy 1927-5-30 8095 Humboldt Northern Coast Ranges.Garberville. 121 Comment
  UC194805  Carex deweyana subsp. leptopoda Joseph P. Tracy 1913-6-22 4267 Humboldt Dinsmore's Ranch in valley of Van Duzen River, opposite Buck Mountain 0 Comment
  CAS-BOT-BC19861  Carex echinata subsp. echinata Joseph Prince Tracy 1930-7-16 8986 Humboldt North Coast Ranges. South Fork Mountain. At McKay Camp. 1676 Comment
  UC249759  Carex echinata subsp. phyllomanica Joseph P. Tracy with H. E. Parks 1924-8-3 6773 Humboldt Big Lagoon Northern Coast Region 6 Comment
  HSC96492  Carex echinata subsp. phyllomanica Gordon Leppig 1998-6-8 798 Humboldt Big Lagoon Bog, Big Lagoon County Park 3 Comment
  SEINET11630974  Carex feta J. P. Tracy 1950-1 19010 Humboldt Buck Mountain, 3 mi S of Burr Valley, on Albee Road 1158 Comment
  UC562647  Carex feta Joseph P. Tracy 1928-6-17 8451 Humboldt at Willow Creek Trinity River Valley 152 Comment
  CAS-BOT-BC21280  Carex fracta Joseph Prince Tracy 1937-7-25 15542 Humboldt Trinity Summit. Head of Hors-Linto Creek. 1371 Comment
  UC1755279  Carex geyeri Dean W. Taylor 2007-7-11 20162 Humboldt Horse Mountain; Six Rivers National Forest, Titlow Hill Road at the junction with Forest Road 6N18 1432 Comment
  CAS-BOT-BC20874  Carex globosa Joseph Prince Tracy 1932-4-3 9791 Humboldt North Coast Ranges. Englewood. 91 Comment
  UC303151  Carex gynodynama Joseph P. Tracy 1925-5-10 6962 Humboldt Hydesiville. Comment
  UC562660  Carex harfordii Joseph P. Tracy 1935-7-14 14087 Humboldt Grouse Mountain North Coast Ranges 1524 Comment
  HSC76381  Carex hendersonii L. P. Janeway 1982-6-17 9 Humboldt Ca 300 m W of main Arcata Community Forest Road along the road to the HSU water tank. 137 Comment
  CAS-BOT-BC35565  Carex jonesii Joseph Prince Tracy 1932-7-15 10572 Humboldt Trinity Summit, at Corral Prairie 1584 Comment
  CAS-BOT-BC35567  Carex jonesii Joseph Prince Tracy 1932-7-15 10573 Humboldt Trinity Summit, at Corral Prairie 1584 Comment
  HSC102224  Carex leptopoda M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-4 1143 Humboldt Patterson Meadows 1555 Comment
  SEINET7467750 Image available Carex leptopoda J. A. Churchill 1984-5-29 8069 Humboldt entrance road to Cal-Barrel Area Comment
  UC1115806  Carex luzulina var. luzulina Joseph P. Tracy 1937-7-9 16341 Humboldt Snow Camp 1402 Comment
  UCR246355  Carex mendocinensis Peter F. Zika 2011-7-3 25496 Humboldt Outer North Coast Ranges (NCoRo), Titlow Hill Road, 3.7 road miles SE of Route 299 at Berry Summit, 1 air km SSW of Horse Mountain 1310 Comment
  RSA0014502  Carex mendocinensis Joseph P. Tracy 1924-6-15 6697 Humboldt Near Ruby Creek, on the Willow Creek Highway. 610 Comment
  HSC102622  Carex microptera M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-29 1609 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1579 Comment
  SEINET201051  Carex multicaulis J. P. Tracy 1927-3-27 7862 Humboldt Northern Coast Ranges Trinity River Valley near the South Fork 183 Comment
  CHSC40167  Carex nudata L. P. Janeway 1984-4-20 732 Humboldt Levee on east side of Eel River near Fortuna at Sandy Prairie Road. 12 Comment
  JEPS80023  Carex nudata Joseph P. Tracy 1911-6-4 3220 Humboldt along Little River 5 mi from coast; Northern Coast Region, Little River 121 Comment
  HSC70472  Carex nudata J. P. Tracy 1911-6-4 3220 Humboldt Along Little River, 5 mi. from coast 122 Comment
  SEINET3905214  Carex nudata Thomas Nelson 1977-5-30 3407 Humboldt In Mad River at Anderson's Ford north of Dinsmore on the McKeown Ranch.; 0 610 Comment
  CHSC2106  Carex obnupta M. Anthony 1937-5-15 Humboldt Humboldt State College. Comment
  HSC76804  Carex obnupta L. P. Janeway 1982-8-7 113 Humboldt Dry Lagoon 3 Comment
  UCD140704  Carex obnupta Linda M. Barker 1976-4-30 1421 Humboldt 3 miles west of Arcata. Comment
  HSC37833  Carex obnupta Thomas W. Nelson 1976-3-4 2263 Humboldt Eureka, beside Buhne St. between S St. and Harrison Ave. Comment
  UC1103088  Carex pachystachya Joseph P. Tracy 1926-5-15 7487 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  HSC98951  Carex pachystachya Cara Witte 2008-7-11 878 Humboldt Spike Buck Mountain. Forest Service Road 5N18. 0.5 mi. from intersection with National Forest 1. 1589 Comment
  HSC49246  Carex pansa Rudolf W. Becking 1979-3-25 Humboldt U.S. Coast Guard Station along N Spit Humboldt Bay, Fairhaven Comment
  CAS-BOT-BC118599  Carex praticola Joseph Prince Tracy 1936-5-29 14826 Humboldt Gans Prairie, on ridge E of Orick, in grassy flat. 548 Comment
  UC303073  Carex praticola Joseph P. Tracy 1915-6-6 4641 Humboldt Eureka, Stephen Hill place Northern Coast Region 0 Comment
  CAS-BOT-BC118823  Carex preslii Joseph Prince Tracy 1932-6-19 10242 Humboldt Dinsmore's Ranch: on Van Duzen River opposite Buck Mountain. 762 Comment
  SEINET10856669  Carex stipata Joseph P. Tracy 1931-5-17 Tracy 9422 Humboldt Lack Pond; in Trinity River Valley, opposie mouth of Willow Creek. 152 Comment
  UC562634  Carex subbracteata Joseph P. Tracy 1936-6-9 14904 Humboldt Upper Mattole 121 Comment
  UC196570  Carex subbracteata Joseph P. Tracy 1916-5-31 4695 Humboldt along Eel River from South Fork to Scotia (Holmes Flat); Northern Coast Ranges 60 Comment
  JEPS79864  Carex subfusca Joseph P. Tracy 1935-6-23 13984 Humboldt French Camp Ridge Northern Coast Ranges 1066 Comment
  JEPS75415  Carex tumulicola W. L. Jepson 1932-7-26 16415 Humboldt Bull Creek 106 Comment
  CAS-BOT-BC115538  Carex unilateralis Joseph Prince Tracy 1927-7-17 8276 Humboldt Three Cabins; grassy slopes on lower western foothills of Chaparral Mountain. 457 Comment
  UC1152051  Carex utriculata Joseph P. Tracy 1950-7-25 19065 Humboldt near McKay Camp; South Fork Mountain 1676 Comment
  HSC2872  Carpobrotus chilensis S. J. Hawks 1965-5-14 58 Humboldt 1 mi. W of Mckinleyville, past the end of Murray Rd. Comment
  CAS-BOT-BC249127  Castilleja affinis Doris K. Kildale 1927-7-10 3737 Humboldt Gans Prairie Comment
  HSC98630  Castilleja affinis subsp. affinis Cara Witte 2007-8-1 614 Humboldt Friday Ridge Road (Forest Service Road 6N08); ~ 1/2 mile north of intersection with Forest Service Road 5N39. 1505 Comment
  JEPS83013  Castilleja affinis subsp. affinis L. R. Heckard 1984-5-14 1655 Humboldt 2 mi s Phillipsville (just n of Freeway 101 on Avenue of the Giants) 83 Comment
  HSC104289  Castilleja affinis subsp. litoralis Samantha E. Andres 2016-6-3 10 Humboldt About 0.5 mi. down the road from Table Bluff to the OHV road at South Jetty 29 Comment
  HSC45090  Castilleja affinis subsp. litoralis R. Sutherland 1978-4-25 11 Humboldt Bluff at Shelter Cove. 34 Comment
  JEPS32452  Castilleja affinis subsp. litoralis Peter H. Raven 1963-5-15 18374 Humboldt about 1.5 mi s Trinidad; Luffenholz Beach Comment
  JEPS55949  Castilleja affinis subsp. litoralis T. I. Chuang and L. R. Heckard 1968-7-3 6456 Humboldt Table Bluff Comment
  HSC36101  Castilleja ambigua subsp. humboldtiensis W. C. Vinyard 1974-5-22 Humboldt Beside Humboldt Bay at the boat access at Arcata Comment
  UC582583  Castilleja applegatei subsp. pinetorum Joseph P. Tracy 1927-5-14 8001 Humboldt near South Fork; Trinity River Valley 182 Comment
  HSC82541  Castilleja arachnoidea Thomas W. Nelson 1979-7-11 5000 Humboldt N Trinity Mtn. and ridge to E. 1829 Comment
  UC168996  Castilleja attenuata Mrs. M. H. Manning May 1902 Humboldt Hupa Comment
  HSC45086  Castilleja attenuata R. Sutherland 1978-5-19 3 .19578 Humboldt Mckee Flat 296 Comment
  HSC95078  Castilleja exserta subsp. latifolia Andrea Pickart 2002-6-4 114 Humboldt N Spit Dunes 0 Comment
  SBBG54572  Castilleja exserta subsp. latifolia F. W. Pennell, J. Tracy 1940-7-6 26085 Humboldt back of beach, Table Bluff, W of Loleta Comment
  JEPS76196  Castilleja exserta subsp. latifolia T. I. Chuang with Fei-Mei Chuang 1977-7-19 7625 Humboldt about 3 mi n Samoa; Manila Comment
  HSC55840  Castilleja miniata G. L. Clifton, Griswold 1979-7-25 10790 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1814 Comment
  HSC56208  Castilleja miniata G. L. Clifton, Griswold 1979-8-2 12210 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  HSC56307  Castilleja miniata Overton, Butler 1979-8-2 12624 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  HSC31218  Castilleja pruinosa D. E. Anderson 1972-6-20 5731 Humboldt Along the Redwood Valley-Hoopa Rd., E of the summit. Comment
  HSC35593  Castilleja pruinosa Thomas W. Nelson, Jane P. Nelson, James Nelson 1975-7-15 2004 Humboldt French Camp, Bald Hills. Comment
  HSC73640  Castilleja pruinosa M. A. Baker 1980-7-23 3169 Humboldt Near Orleans Mtn. 1859 Comment
  HSC72569  Castilleja pruinosa J. P. Smith, J. O. Sawyer 1976-5-2 8628 Humboldt S. R. 96, 4.9 mi. N of its junction with S.R. 299 122 Comment
  UC176440  Castilleja rubicundula subsp. lithospermoides Joseph P. Tracy 1913-6-19 4213 Humboldt opposite Buck Mountain (Dinsmore's Ranch); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  UC313721  Castilleja rubicundula subsp. lithospermoides Joseph P. Tracy 1923-6-18 6285 Humboldt Cape Mendocino Northern Coast Ranges (sw slopes fronting the ocean) 152 Comment
  JEPS35816  Castilleja wightii Rimo Bacigalupi, and L. R. Heckard 1964-7-27 8962 Humboldt .12 mi e and above Shelter Cove (in shaded bend of road) Comment
  HSC44451  Ceanothus arcuatus Brad Klipfel 1975-5-30 653 Humboldt Horse Mtn. Comment
  HSC37053  Ceanothus incanus R. Sutherland 1975-5-26 1 .26575 Humboldt 305 Comment
  UC1174846  Ceanothus incanus P. C. Everett and E. K. Balls 1959-10-26 23977 Humboldt 6 mi se Honeydew (on Old Coast Rd to Ettersburg) 518 Comment
  UC1193320  Ceanothus incanus P. Zinke 1950-8-4 150 Humboldt 2 mi n Harris Postoffice; Quad. 29D3 883 Comment
  UC535732  Ceanothus incanus Eleanor Armstrong 1934-8-15 1187 Humboldt Richardson Grove 121 Comment
  RSA46802  Ceanothus incanus Doris K. Kildale 1927-6-25 3579 Humboldt [No locality information on label.] Comment
  CAS-BOT-BC63680  Ceanothus integerrimus L. B. Kildale 1928-6-3 5094 Humboldt Bug Creek. Comment
  CAS-BOT-BC63725  Ceanothus integerrimus H. E. McMinn 1922-8-5 350 Humboldt Along Van Duzen River. Comment
  HSC100624  Ceanothus integerrimus Carl C. Marshall Jun 1886 262 Humboldt Bald Hills. Comment
  HSC43181  Ceanothus parryi R. Sutherland 1975-7-3 2 .3775 Humboldt Along Ettersburg Rd. 488 Comment
  CAS-BOT-BC53060  Ceanothus pumilus Joseph P. Tracy 1927-5-15 8056 Humboldt Hoopa Mountain - On road west from Hoopa Valley 914 Comment
  HSC98122  Ceanothus pumilus Cara Witte 2007-5-24 118 Humboldt Horse Mountain Botanical Area. Along 6N36. Approximately .6 miles southeast from Radio Towers. 1476 Comment
  CAS-BOT-BC52223  Ceanothus thyrsiflorus Carl B. Wolf 1941-7-28 11089 Humboldt Summit of Trinidad Head 45 Comment
  CAS-BOT-BC52955  Ceanothus thyrsiflorus Marcus E. Jones 1924-4-26 s.n. Humboldt Eureka Comment
  CHSC19497  Ceanothus thyrsiflorus Norman Dennis 1965-6-19 124 Humboldt About 1/4 mile south and 1 mile east of the junction of Barry Ridge Road and the Eureka-Bridgeville county road, along Ashfield Ridge Road. About 5 miles southeast of Kneeland. 792 Comment
  HSC100906  Ceanothus thyrsiflorus Carl C. Marshall Apr 1885 16 Humboldt Vicinity Humboldt Bay everywhere. Comment
  HSC18335  Ceanothus thyrsiflorus W. K. Parks Jun 1932 1357 Humboldt Trinidad Comment
  HSC45481  Ceanothus thyrsiflorus Maralyn O'Meara 1973-2-9 127 Humboldt McKinleyville, N side of Mad River along N Bank Rd., 0.5 mi. E of Hwy. 101 Comment
  RSA172184  Ceanothus thyrsiflorus Robert F. Thorne 1957-9-3 19022 Humboldt Patrick's Point State Park. Comment
  RSA31956  Ceanothus thyrsiflorus A. A. Heller 1937-6-11 15916 Humboldt Sandy bluff above Patric Point State Park near Big Lagoon Comment
  UC275289  Ceanothus thyrsiflorus Joseph P. Tracy 1924-8-10 6796 Humboldt Strongs' Station Northern Coast Ranges, Van Duzen River (on Van Duzen River) 91 Comment
  UC668161  Ceanothus thyrsiflorus Joseph P. Tracy 1937-5-30 15317 Humboldt Bridgeville 198 Comment
  HSC43225  Ceanothus velutinus R. Sutherland 1976-3-17 6 .17376 Humboldt 747 Comment
  UC1198027  Ceanothus velutinus Joseph P. Tracy 1913-7-20 4374 Humboldt Near Three Creeks 1066 Comment
  SEINET13946128 Image available Ceanothus velutinus S. K. Harris 1942-1 1257 Humboldt Fickle Hill Road, 5 mi N and 2 mi E of Boynton Prairie; ca 630 m alt. 630 Comment
  UC1199120  Centaurea X moncktonii Joseph P. Tracy 1933-8-22 12973 Humboldt at Eureka Eureka 60 Comment
  JEPS44148  Centaurea cyanus Lincoln Constance 1934-6-25 928 Humboldt on e side of road at Englewood (across the road from Collins' Englewood Campground); Bull Creek Region, South Fork Eel River Comment
  UC1222949  Centaurea solstitialis Joseph P. Tracy 1943-11-28 17452 Humboldt near Alton (Eel River bar at mouth of Van Duzen); Eel River, Van Duzen Comment
  POM128272  Centaurium muehlenbergii M. H. Manning s.n. Humboldt Hupa [Hoopa] Valley. Comment
  UC1198634  Centaurium muehlenbergii Joseph P. Tracy 1935-5-25 13870 Humboldt Fort Seward 106 Comment
  UC562308  Centaurium muehlenbergii Joseph P. Tracy 1934-7-9 13347 Humboldt Dobbyn Creek 152 Comment
  UC906756  Centaurium muehlenbergii Joseph P. Tracy 1941-9-7 17013 Humboldt near Blue Lake; Mad River 15 Comment
  JEPS46930  Centaurium muehlenbergii Lincoln Constance 1934-6-4 820 Humboldt Bull Creek road to Dyerville (Look Prairie); South Fork Eel River, Bull Creek Region, Look Prairie Comment
  UC162888  Cerastium arvense Harley P. Chandler June, 1901 1384 Humboldt Hupa Indian Reservation North Coast Ranges, Hupa Indian Reservation 152 Comment
  HSC79427  Cerastium arvense Kenneth Clark 1980-3-22 528 Humboldt Middle alluvial terraces and in upper open meadows by small ephemeral stream 114 Comment
  UC8236  Cerastium arvense J. Burtt Davy 1899-6-9 5366 Humboldt Chamisse Ridge n. of Harris; Chamisse Ridge Comment
  RSA168880  Cerastium arvense subsp. maximum Joseph P. Tracy 1950-6-15 18820 Humboldt Mail Ridge, north of Harris 7 miles Comment
  UCD97989  Cerastium arvense subsp. strictum W. L. Jepson 1902-6-19 1883 Humboldt Harris to Ft. Seward Ranch Ridge. 1066 Comment
  HSC79373  Cerastium glomeratum Kenneth Clark 1980-3-27 552 Humboldt Above Dead Man's Gulch 183 Comment
  UCSB1850  Cerastium glomeratum Parks, H.; Parks, S. 1944-04 Humboldt Spruce Cove, Trinidad 60 Comment
  SD42481  Cerastium viride Carl B. Wolf 1937-6-18 8883 Humboldt Table Bluff, between Humboldt Bay and Eel River. Comment
  HSC14611  Cercis occidentalis R. A. Rasp 1964-4-5 27 Humboldt 3 mi. past Willow Creek on Willow Creek Rd. Comment
  UCSB12070  Chamaecyparis lawsoniana Howe, J. 1938-3-30 Humboldt Humboldt County Comment
  JEPS52356  Chamaesyce serpyllifolia Joseph P. Tracy 1916-9-5 4769 Humboldt 4 mi above mouth of river; Nothern Coast Ranges, South Fork of Eel River Comment
  UC314615  Chamerion angustifolium subsp. circumvagum Joseph P. Tracy 1926-7-25 7755 Humboldt Big Lagoon Northern Coast Region 6 Comment
  UC55948  Chenopodium album J. P. Tracy 1903-8-4 1927 Humboldt Immediate vicinity of Eureka 0 Comment
  UC673036  Chenopodium pumilio Joseph P. Tracy 1931-10-12 9729 Humboldt Blue Slide Van Duzen River 91 Comment
  RSA44503  Chenopodium pumilio H. M. Pollard 1947-8-31 s.n. Humboldt Orleans Hotel grounds, Orleans. Comment
  CAS-BOT-BC451385  Chimaphila menziesii Harley P. Chandler 1901-6-1 1398 Humboldt North Coast Ranges, Hupa Indian Reservation 152 Comment
  CAS-BOT-BC451500  Chimaphila umbellata Doris K. Kildale 1928-4-29 5962 Humboldt Bald Mountain Comment
  HSC29730  Chimaphila umbellata J. D. Ackerman, A. M. Montalvo 1973-6-29 68 Humboldt 2 mi. N of Manila Comment
  UC404019  Chlorogalum pomeridianum var. pomeridianum P. E. Goddard 1901-7 11 Humboldt Hupa Comment
  CAS-BOT-BC236920  Chloropyron maritimum subsp. palustre Malcom A. Nobs; S. Galen Smith 1949-8-3 1200 Humboldt Bordering Humboldt Bay, ca. 2 miles north of Eureka Comment
  JEPS49021  Chrysolepis chrysophylla Hilda W. Grinnell 1932-7-9 5 Humboldt above Kerlin Creek (South Fork Mt.); South Fork Mt. Comment
  UC1193060  Chrysolepis chrysophylla var. minor G. W. Tourtillott 1950-10-11 34 Humboldt 1 mi w Queens Peak 609 Comment
  UCD110101  Chrysolepis chrysophylla var. minor Joseph P. Tracy 1936-8-7 15117 Humboldt Trinity Summit. 2 miles southeast of Devil's Hole. 1584 Comment
  CAS-BOT-BC420344  Chrysosplenium glechomifolium Doris K. Kildale 1927-4-10 3079 Humboldt Prarie Creek, Russ Grove of Redwoods Comment
  HSC5369  Cichorium intybus H. D. Sumner 1959-7-14 Humboldt Between Hoopa and Redwood Creek 305 Comment
  JEPS15745  Cicuta douglasii Joseph P. Tracy 1925-7-5 7179 Humboldt near High Prairie (on Bald Mountain); Northern Coast Ranges, Bald Mountain 1066 Comment
  HSC58809  Cinna latifolia G. L. Clifton, Griswold 1979-8-1 11982 Humboldt Near Mill Creek Lakes, close to the town of Hoopa 1707 Comment
  JEPS59108  Cirsium arvense Lincoln Constance 1934-6-2 787 Humboldt to mouth of Bull Creek, and up Bull Creek Bull Creek road; South Fork Eel River, Bull Creek Region Comment
  UC1223063  Cirsium arvense Joseph P. Tracy 1950-8-1 19245 Humboldt near summit e of North Fork of Mad River Comment
  SEINET11860324  Cirsium douglasii var. canescens H. E. Parks, Parks, S. T. 1947-1 24441 Humboldt South Fork Camp, Willow Creek Comment
  CAS-BOT-BC279974  Cirsium douglasii var. douglasii John Thomas Howell 1937-7-31 13716 Humboldt 5 miles east of Berry Summit Comment
  SEINET201022  Cirsium occidentale Joseph P. Tracy 1926-6-20 7662 Humboldt Horse Mountain lower slopes; northern coast ranges 914 Comment
  RSA671131  Cirsium occidentale var. venustum B. Villegas 1998-8-5 s.n. Humboldt Nr. Berry Summit on Titlow Hill Road, 3.9 miles south of Hwy. 299 Comment
  UC176413  Cirsium occidentale var. venustum Joseph P. Tracy 1913-6-20 4216 Humboldt opposite Buck Mountain (Dinsmore's Ranch, in valley in Van Duzen River); Northern Coast Ranges, Van Duzen River 762 Comment
  HSC98565  Cirsium remotifolium var. odontolepis Cara Witte 2008-7-16 910 Humboldt Board Camp Mountain. Forest Service Road 4N38. 1/2 mile south of intersection with National Forest 1. 1409 Comment
  UC1222855  Clarkia amoena Joseph P. Tracy 1950-6-8 18751 Humboldt s of point Cape Mendocino; Devil's Gate 3 Comment
  UC162624  Clarkia amoena Joseph P. Tracy 1911-7-10 3499 Humboldt along road between Three Creeks and mouth Willow Creek; Northern Coast Ranges 762 Comment
  CAS-BOT-BC160952  Clarkia amoena subsp. amoena Doris K. Kildale 1927-7-17 3749 Humboldt Bug Creek 792 Comment
  CAS-BOT-BC160966  Clarkia amoena subsp. amoena Alice Eastwood 1921-7-21 10663 Humboldt [Vanduzen] Van Duzen River, along the road Comment
  POM228379  Clarkia amoena subsp. amoena S. K. Harris 1936-6-25 671 Humboldt South side of Domingo Gulch on road from Petrolia to Cape Mendocino 30 Comment
  HSC63486  Clarkia amoena subsp. huntiana M. A. Baker 1977-6-6 380 Humboldt Along Hwy. 96, Hoopa Indian Res. Comment
  POM208994  Clarkia amoena subsp. huntiana Lincoln Constance 1934-5-23 618 Humboldt Look Prairie, Bull Creek Watershed, Humboldt Redwood Park. 366 Comment
  CAS-BOT-BC164179  Clarkia concinna S. K. Harris; J. P. Tracy 1936-6-10 3265 Humboldt West of the South Fork of the Trinity River near its mouth 640 Comment
  BLMAR7  Clarkia gracilis subsp. tracyi Fredric Hrusa 1993-6-17 7 Humboldt Red mountain, small colony summit of rd thru serpentine.Uncommon 900 Comment
  HSC32089  Clarkia purpurea D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-17 5701 Humboldt McKeown Ranch, N of Dinsmore Comment
  UC144078  Clarkia purpurea subsp. quadrivulnera Joseph P. Tracy 1909-7-31 3030 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  UC505118  Clarkia purpurea subsp. quadrivulnera Joseph P. Tracy 1932-6-26 10264 Humboldt Valley of South Yager Creek Northern Coast Ranges 762 Comment
  UC1071933  Clarkia purpurea subsp. quadrivulnera H. and M. Lewis 1947-6-13 415 Humboldt 0.1 mi w Trinity Co. line (Highway 36) Comment
  RSA108224  Clarkia purpurea subsp. viminea Harlan Lewis, M. Lewis 1947-6-14 417 Humboldt Highway 36, 1.2 mile east of Van Duzen Public Camp Ground Comment
  JEPS127651  Claytonia Jurriaan M. de Vos 2014-7-1 301 Humboldt Along Bald Hills Road, near Dolason trail head parking. Comment
  UCD100612  Claytonia exigua Thomas W. Nelson; James L. Nelson 1980-6-10 5435 Humboldt Along the east side of Red Mountain. 1371 Comment
  CAS-BOT-BC439933  Claytonia perfoliata subsp. mexicana Doris K. Kildale 1926-3-21 1583 Humboldt Kneeland Prairie - summit 853 Comment
  UC673002  Claytonia perfoliata subsp. perfoliata Joseph P. Tracy 1927-5-15 8036 Humboldt near South Fork; Trinity River Valley 182 Comment
  UC161029  Claytonia rubra subsp. depressa Joseph P. Tracy 1911-4-30 3175 Humboldt Eureka; Northern Coast Region Comment
  UC1368488  Claytonia rubra subsp. rubra R. K. Gierisch and D. H. Esplin 1969-7-1 3534 Humboldt Grouse Mtn.; Six Rivers Forest/Expt. Area Comment
  UC672998  Claytonia rubra subsp. rubra Joseph P. Tracy 1933-6-13 12579 Humboldt near summit road from Hoopa westward to Bair's; Hoopa Mountain 1066 Comment
  UC183592  Claytonia saxosa Joseph P. Tracy 1913-6-17 4185 Humboldt near Buck Mountain summit (between the first and second peaks of Buck Mountain); Northern Coast Ranges, Buck Mountain 1676 Comment
  HSC104049  Claytonia sibirica E. R. Fyer 2015-4-29 28 Humboldt Arcata Community Forest 92 Comment
  HSC17738  Claytonia sibirica J. R. Eichelberger 1964-4-10 25 Humboldt 4 mi. above Blue Lake on Hwy. 299 Comment
  OBI33239  Claytonia sibirica David J. Keil 1983-7-1 17261 Humboldt Along Bull Crk Flats Rd 1.4 mi W of US 101. Humboldt Redwoods State Park Comment
  UC162973  Claytonia sibirica Joseph P. Tracy 1911-6-4 3212 Humboldt 5 mi from coast Little River (along Little River); Northern Coast Region 121 Comment
  HSC17725  Claytonia sibirica D. E. Anderson 1962-3-31 1970 Humboldt Coastal area of Prairie Creek State Park Comment
  RSA183605  Claytonia sibirica R. D. Modafferi 1965-4-8 14 Humboldt 2.2 miles N of Trinidad on Trinity Street. 305 Comment
  RSA554591  Claytonia sibirica Walter Wisura 1993-5-9 4909 Humboldt Northwest: Hwy 299, 5.7 mi. W of Willow Creek at E-fork camp ground. Comment
  UC183773  Clematis ligusticifolia Joseph P. Tracy 1912-8-4 3980 Humboldt near Hydesville (on Yager Creek); Northern Coast Region, Yager Creek 60 Comment
  UC249703  Clematis ligusticifolia Joseph P. Tracy 1921-9-4 5956 Humboldt near Willow Creek (Trinity R. Valley); Northern Coast Ranges, Trinity R. Valley 152 Comment
  HSC14260  Clinopodium douglasii Paul Shields Jun 1955 Humboldt 3 mi. N of Weott Comment
  JEPS61596  Clintonia andrewsiana Lincoln Constance 1934-5-31 752 Humboldt South Fork Eel River, along n side of Bull Creek, w boundary of park to Grasshopper Peak (Squaw Creek) Road Bull Creek; Bull Creek Region, South Fork Eel River, Bull Creek Comment
  RSA39092  Clintonia andrewsiana Philip A. Munz 1948-8-15 12359 Humboldt Van Duzen Redwood State Park. Comment
  HSC54022  Clintonia uniflora Griswold, Butler 1979-7-12 7181 Humboldt Near Groves Prairie, close to the town of Willow Creek. 1256 Comment
  UC1103460  Clintonia uniflora Joseph P. Tracy 1926-6-6 7582 Humboldt Hoopa Mountain, near summit on road w from Hoopa to Bair's Hoopa Mountain; Northern Coast Ranges, Hoopa Mountain 1066 Comment
  CAS-BOT-BC499961  Clintonia uniflora L. B. Kildale 1931-8-23 s.n. Humboldt Snow Camp 1219 Comment
  UC41805  Collinsia grandiflora Harley P. Chandler May 1901 1251 Humboldt Redwood Belt; North Coast Ranges 457 Comment
  SEINET12268895  Collinsia grandiflora H. P. Chandler 1901-1 1251 Humboldt Redwood Belt, North Coast Ranges 457 Comment
  HSC96271  Collinsia linearis Eric Schori, Kazuyuki Ishimaru 2005-6-15 12 Humboldt About 18 miles S of Hwy. 299 1400 Comment
  UC594150  Collinsia linearis S. K. Harris, J. P. Tracy 1936-6-10 3266 Humboldt w of the South Fork of the Trinity River near its mouth South Fork of the Trinity River 640 Comment
  HSC32323  Collinsia parviflora D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5664 Humboldt Senteney Rock, a large barren Franciscan Rock along Swayback Ridge. Comment
  HSC70376  Collinsia parviflora M. A. Baker 1980-6-7 1783 Humboldt Near Brush Mtn. 1128 Comment
  UC147864  Collinsia parviflora Joseph P. Tracy 1908-6 2703 Humboldt Valley of Van Duzen River opposite Buck Mountain (Northern Coast Ranges); , Valley of Van Duzen River 762 Comment
  HSC60032  Collinsia rattanii M. A. Baker 1978-5-6 504 Humboldt 2 km. W of Weitchpec along Klamath River. Comment
  JEPS25070  Collinsia sparsiflora var. sparsiflora Joseph P. Tracy 1932-4-24 9819 Humboldt between Miranda and Redway; South Fork Eel River 91 Comment
  HSC44554  Collinsia torreyi Brad Klipfel 1973-7-15 173 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  SBBG11070  Collomia grandiflora D. E. Breedlove 1961-7-4 653 Humboldt 10.9 mi W of Willow Crk on US Hwy 299 822 Comment
  HSC70399  Collomia heterophylla M. A. Baker 1980-6-7 1851 Humboldt Near Ammon Creek 115 Comment
  SEINET3479162  Collomia heterophylla S. K. Harris 1942-6-12 Humboldt East of Birds Nest (added later by Bill Schmidt), East of Birds Nest (added later by Bill Schmidt), 4 miles east, Fickle Hill Road to Boynton Prairie Comment
  HSC73719  Collomia tracyi M. A. Baker 1980-7-15 2955 Humboldt Near Whiting Ridge. 1341 Comment
  JEPS109809  Collomia tracyi Dean W. Taylor 2004-6-24 19133 Humboldt Horse Mountain, along Titlow Hill Road 0.4 miles north from the junction with the road to the mountain summit 1310 Comment
  HSC36297  Comarum palustre Dana A. Page 1973-11-24 Humboldt Crannell Rd. 0.5 mi. E of Hwy. 101, McKinleyville Comment
  UC1197345  Conium maculatum Joseph P. Tracy 1933-8-22 12975 Humboldt at Eureka Eureka 6 Comment
  HSC90254  Conium maculatum Jean Hanson 1980-5-24 80 Humboldt Indian (Gunther) Island, in Humboldt Bay, city of Eureka. W end of island, 40 ft from SW shore Comment
  SEINET10454738  Conium maculatum Mary Susan Taylor 1977-8-5 Taylor 1433 Humboldt Abundant around bridge over Eel River, at the turnoff from Hwy 1 to Ferndale, in Fernbridge. 2 Comment
  UC562291  Convolvulus arvensis Joseph P. Tracy 1934-7-15 13407 Humboldt near Fields Landing; North Coast Ranges, around Humboldt Bay 6 Comment
  UC673153  Coptis laciniata Lincoln Constance, Reed C. Rollins 1942-5-11 2868 Humboldt 3 mi w of East Fork Willow Creek (North Coast Ranges); North Coast Ranges Comment
  HSC104334  Coptis laciniata James Regan, Humboldt Redwood Co., LLC 2009-4-1 33 Humboldt Snow Camp Rd., Bald Mtn. Creek Comment
  HSC73776  Corallorhiza maculata M. A. Baker 1980-6-7 1768 Humboldt Near Brush Mtn. 1128 Comment
  HSC99806  Corallorhiza maculata T. Jimerson, J. Pageau 1979-6-13 546 Humboldt Near Onion Lake, close to the town of Orleans. 549 Comment
  HSC28082  Corallorhiza mertensiana J. D. Ackerman, A. Montalvo 1973-7-4 94 Humboldt Grogan Hole Rd, 18 mi. E of Hoopa Comment
  UC1196458  Corallorhiza mertensiana Joseph P. Tracy 1926-6-6 7580 Humboldt Hoopa Mountain Northern Coast Ranges (near summit on road from Hoopa to Bair's) 1066 Comment
  HSC1800  Cordylanthus maritimus subsp. palustris William J. Ferlatte, B. D. Rogers 1966-8-15 3125 Humboldt 6 mi. E of Korbel. Cutoff Redwood. Note from collector, 14 Sep. 1971: 'Probably mislabeled as to locality'. Comment
  JEPS6035  Cordylanthus maritimus subsp. palustris Joseph P. Tracy 1933-8-22 12991 Humboldt in salt marsh n of Eel River 3 Comment
  UC1196814  Cordylanthus tenuis subsp. viscidus Joseph P. Tracy 1949-8-4 18413 Humboldt Mud Springs Trinity Summit 1341 Comment
  JEPS32995  Cordylanthus tenuis subsp. viscidus Freed W. Hoffman 1949-7-14 3063 Humboldt Pine Point Ridge sw Mt. Lassic Lookout; North Coast Ranges Comment
  CAS-BOT-BC101148  Corethrogyne filaginifolia Doris K. Kildale 1925-7-26 1066 Humboldt Mad River near Blue Lake, West-End Crossing Comment
  HSC75232  Corethrogyne filaginifolia D. M. Gordon 1982-9-20 Humboldt End of country road (Lanphere Rd.)on Hunt property. Lanphere-Christensen Dunes Preserve, 3 mi. W of Arcata Comment
  POM356152  Corethrogyne filaginifolia var. californica E. A. Purer 1932-7-30 4675 Humboldt South of Orick Comment
  CAS-BOT-BC212006  Cornus nuttallii Mrytle Paulson 1918-4-28 s.n. Humboldt Eureka Comment
  CAS-BOT-BC212013  Cornus nuttallii Doris K. Kildale 1927-5-1 3118 Humboldt Blocksburg Comment
  CAS-BOT-BC212015  Cornus nuttallii Doris K. Kildale 1928-5-19 5152 Humboldt Chalk Mountain Comment
  CAS-BOT-BC212017  Cornus nuttallii Doris K. Kildale 1925-4-1 s.n. Humboldt Hungry Hollow near Korbell Comment
  UC154072  Cornus nuttallii Joseph Burtt Davy and Walter C. Blasdale 1899-6-19 5635 Humboldt Hoopa Mt. North Coast Ranges, Hoopa Mt. Comment
  HSC57091  Cornus sericea subsp. sericea Overton, Butler 1979-7-24 9805 Humboldt Near Black Rock, close to the town of Willow Creek 1463 Comment
  HSC58341  Cornus sericea subsp. sericea Overton, Butler 1979-8-2 12665 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  HSC26713  Cornus sessilis D. E. Anderson 1973-5-13 6027 Humboldt 100 meters S of Jct. of E Fork of Willow Creek and Willow Creek proper. Comment
  JEPS50174  Cornus sessilis Joseph P. Tracy 1922-4-30 6040 Humboldt Three Creeks Northern Coast Ranges, Three Creeks 670 Comment
  CDA1906  Cortaderia jubata T. C. Fuller 1966-10-4 15238 Humboldt Northwestern; Outer North Coast Ranges region; 1100 acres, slope N above headquarters of Georgia Pacific Lumber Co. 0 Comment
  UC1225940  Corylus californica Joseph P. Tracy 1946-8-25 17639 Humboldt Table Bluff, N slope; along Hookton road 9 Comment
  UCR32167  Corylus cornuta var. californica David J. Keil 1983-7-2 17312 Humboldt c. 4 mi SE of SR 299 along Titlow Hill Rd below Horse Mountain Summit Road Comment
  UCR3511  Corylus cornuta var. californica David Whistler, H. M. Whistler 1964-7-29 640729- 6 Humboldt North Coast, US Hwy 101, along bank of Eel River, 0.2 mi. north of Weott 85 Comment
  CHSC32813  Cotula coronopifolia Lora L. Anderson 1981-4-26 20 Humboldt Ca. 500 yds e of ocean (Moonstone Beach) 0.5 mi w of hwy 101, 11.5 mi nw of Arcata. 0 Comment
  CAS-BOT-BC291341  Cotula coronopifolia C. L. Hitchcock; J. S. Martin 1939-7-14 5434 Humboldt Above pier at Shelter Cove Comment
  HSC79466  Crassula connata Kenneth Clark 1981-4-5 1226 Humboldt 1/4 E of Dead Man's Gulch 122 Comment
  UC1198825  Crassula connata var. subsimplex Joseph P. Tracy 1919-4-27 5128 Humboldt sand dunes of Ocean Beach at Humboldt Bay; Northern Coast Region, , Ocean Beach 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-BC291481  Crepis capillaris E. C. Johnston 1931-8-1 s.n. Humboldt Klamath River to Arcata Comment
  HSC67017  Crepis capillaris J. P. Smith 1971-10-9 5033 Humboldt Banks and flood plain of the Mad River above the fish hatchery. Comment
  UC581732  Crepis pleurocarpa Joseph P. Tracy 1935-7-28 14332 Humboldt Brett Hole Trinity Summit (head) 1828 Comment
  RSA113707  Crepis setosa Joseph P. Tracy 1947-7-13 17769 Humboldt Hors-Linto Creek, near the mouth in woods along an old road 152 Comment
  HSC62776  Crocus speciosus M. Dean Griswold Jr. 1979-4-28 34 Humboldt W side of old Hwy. 101 Comment
  HSC32316  Cryptantha affinis D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5656 Humboldt Senteney Rock, a large barren Franciscan Rock along Swayback Ridge. Comment
  UC525607  Cryptantha affinis Joseph P. Tracy Jul 16 1930-Jul 19 1930 8941 Humboldt near McKay Camp; Northern Coast Ranges, South Fork Mountain 1676 Comment
  SDSU19212  Cryptantha leiocarpa Michael G. Simpson, John Sawyer and Michael Mayer 2008-5-30 3032 Humboldt Lanphere Dunes, ca. 3.0 miles north-northeast of Manila. 2 Comment
  HSC102630  Cryptantha torreyana M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-29 1615 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1579 Comment
  UC175783  Cryptantha torreyana Joseph P. Tracy 1912-6-9 3655 Humboldt Alton Northern Coast Region 30 Comment
  UC525598  Cryptantha torreyana Joseph P. Tracy 1930-6-15 8751 Humboldt near Bosworth's; Northern Coast Ranges, Larrabee Creek 457 Comment
  RSA135453  Cryptantha torreyana Volney Rattan 1882-06 s.n. Humboldt North of Mad River. Comment
  HSC55165  Cryptogramma acrostichoides Gilbert Muth 1979-8-1 12155 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1677 Comment
  UC54781  Cupressus lawsoniana Joseph Burtt Davy and Walter C. Blasdale 1899-5 5633 Humboldt Hoopa Mt. North Coast Ranges, Hoopa Mt. Comment
  HSC44543  Cuscuta occidentalis Brad Klipfel 1973-7-15 162 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC65846  Cycladenia humilis Gail Newton 1980-7-22 1655 Humboldt Near Devils Backbone 1554 Comment
  UC642236  Cyclospermum leptophyllum Joseph P. Tracy 1927-8-20 8333 Humboldt Blue Slide Northern Coast Ranges, Van Duzen River (on Van Duzen River) 91 Comment
  UCD119159  Cynoglossum grande D. W. Cooper 1971-5-11 s.n. Humboldt On Charles Moore's ranch on Kneeland Ridge, ca. 10 miles east of Eureka. Comment
  UCD60124  Cynosurus cristatus A. H. Murphy 1949-6-29 s. n. Humboldt ca. 1.5 miles north of Loleta, H. Perrots Ranch, Table Bluff. Comment
  JEPS64088  Cyperus bipartitus Joseph P. Tracy 1938-8-14 16113 Humboldt mt. slopes w. of its mouth S. Fork Trinity R. 304 Comment
  UC668034  Cyperus eragrostis Joseph P. Tracy 1935-5-25 13836 Humboldt Fort Seward 106 Comment
  HSC95388  Cyperus eragrostis Andrea Pickart 2002-7-9 176 Humboldt Bracut Marsh in zone between brackish and riparian 10 Comment
  CAS-BOT-BC113832  Cyperus niger var. capitatus Joseph Prince Tracy 1938-8-14 16113 Humboldt South Fork of Trinity River, mountain slopes west of its mouth. 304 Comment
  HSC74653  Cystopteris fragilis M. A. Baker 1980-5-17 1226 Humboldt Near Le Perron Peak 792 Comment
  HSC9535  Dactylis glomerata R. H. Berg 1963-2-23 2 Humboldt Fickle Hill area, Arcata Comment
  RSA730951  Dactylis glomerata Gary D. Wallace 1979-6-22 1851 Humboldt Eureka. Parking lot, 6 Rivers National Forest headquarters. Comment
  UC1103248  Dactylis glomerata Joseph P. Tracy 1919-8-28 5186 Humboldt Eureka; Northern Coast Ranges, Eureka 0 Comment
  UC37946  Danthonia californica Harley P. Chandler May, 1901 1239 Humboldt North Coast Ranges; Redwood Belt 91 Comment
  CHSC35545  Danthonia californica var. californica James Payne Smith Jr. 1977-7-3 9231 Humboldt Road to Fish Lake (Forest Service Road 13N01), 3.5 miles from its junction with State Route 36. 487 Comment
  UC1152019  Danthonia unispicata Joseph P. Tracy 1951-7-26 19593 Humboldt Redwwod Creek Board Camp Mountain (extreme head, n side of mt.) Comment
  CAS-BOT-BC420359  Darmera peltata Carl D. Duncan 1920-9-22 s.n. Humboldt Trinity River, Hoopa Valley Comment
  RSA520566  Datisca glomerata M. Hanson 1990-5-22 84 Humboldt In the Trinity River, 75 meters E of the Hwy 96 bridge N of Hoopa. Comment
  JEPS14239  Daucus pusillus Joseph P. Tracy 1936-6-8 14870 Humboldt Trinidad Comment
  UC164990  Deinandra corymbosa J. P. Tracy 1902-8-10 1768 Humboldt immediate vicinity Eureka 0 Comment
  HSC24780  Delairea odorata Barbara Kelly 1971-11-15 230 Humboldt North Bank Rd. next to Hwy. 101, McKinleyville Comment
  CAS-BOT-BC33215  Delphinium decorum subsp. tracyi Harold Ernest Parks; Joseph Prince Tracy 1930-3-25 789 Humboldt Laribee Valley 914 Comment
  JEPS23882  Delphinium decorum subsp. tracyi Frank W. Gould 1939-5-30 837 Humboldt Near top of Horse Mountain (about 25 miles due east of Eureka) Comment
  UCR139078  Delphinium decorum subsp. tracyi J. Cromwell, A. Thoele, J. Schneider 1994-5-6 050 Humboldt Six Rivers National Forest. On Titlow Road 0.4 mi south of Hwy 299 intersection 875 Comment
  CAS-BOT-BC9027  Delphinium decorum subsp. tracyi Charles R. Schwend 1986-4-19 023 Humboldt Approximtaely 3/4 mile west of ski area on Horse Mountain Comment
  POM172673  Delphinium decorum subsp. tracyi Joseph P. Tracy 1913-6-17 4148 Humboldt Burr Valley, on NW slope of Buck Mtn Comment
  CAS-BOT-BC10310  Delphinium hesperium Alice Eastwood; John Thomas Howell 1937-6-23 4854 Humboldt Mad River Canyon, between Kneeland and Korbel Comment
  SD46536  Delphinium hesperium E. K. Balls, L. W. Lenz 1956-6-12 21665 Humboldt 9.1 miles ne from Blue Lake along U.S. Hwy. 299, Arcata to Willow Creek. 487 Comment
  CAS-BOT-BC9954  Delphinium nudicaule Doris K. Kildale 1928-6-24 5288 Humboldt Horse Mountain 853 Comment
  CAS-BOT-BC9955  Delphinium nudicaule Doris K. Kildale 1928-5-27 5944 Humboldt Kneeland Prairie 853 Comment
  UC1222578  Delphinium nudicaule Joseph P. Tracy 1950-6-15 18815 Humboldt ne side of ridge Mail Ridge, Huestis Rock (7 mi ne of Harris) Comment
  HSC100615  Delphinium nudicaule Carl C. Marshall May 1887 412 Humboldt Lawrence Creek. Comment
  UC160942  Delphinium trolliifolium Joseph P. Tracy Jul 27 1908-Jul 30 1908 2712 Humboldt opposite Buck Mountain; Northern Coast Ranges, valley of Van Duzen River 762 Comment
  UC162819  Delphinium trolliifolium Joseph P. Tracy 1908-6 2712 Humboldt opposite Buck Mountain; Northern Coast Ranges, valley of Van Duzen River 762 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
  UCD61253  Deschampsia cespitosa Malcolm A. Nobs; S. Galen Smith 1949-8-3 1167 Humboldt 1 mile south of Fields Landing, Eel River Valley. Comment
  UC552695  Deschampsia cespitosa subsp. cespitosa Joseph P. Tracy 1934-7-20 13456 Humboldt Big Lagoon Northern Coast Region, Big Lagoon 6 Comment
  LA10879  Deschampsia danthonioides Joseph P. Tracy; 1935-6-23 13969 Humboldt 1066 Comment
  UC526671  Deschampsia elongata Joseph P. Tracy Jul 16 1930-Jul 19 1930 9092 Humboldt S. Fork Mt. near McKay Camp Northern Coast Ranges, S. Fork Mt. 1676 Comment
  CAS-BOT-BC201782  Deschampsia elongata Henry M. Pollard 1947-8-22 s.n. Humboldt Fontana's Fishing Lodge, nr. Orleans Comment
  HSC22052  Dicentra formosa B. D. Rogers, D. E. Anderson 1965-4-1 414 Humboldt 4 mi. SE of Arcata along Jacoby Creek Comment
  HSC44257  Dicentra formosa J. Walker 1977-4-23 8 Humboldt 2.5 mi. S of Shelter Cove Rd., S Fork of Bear Creek at Wailaki Campground 561 Comment
  JEPS9737  Dicentra formosa Joseph P. Tracy 1933-5-28 12414 Humboldt Carlotta; Northern Coast Ranges 60 Comment
  UC198594  Dicentra formosa Joseph P. Tracy 1917-5-13 4781 Humboldt Eureka; Northern Coast Ranges 0 Comment
  UC1586878  Dicentra formosa Juha Pykala and D. H. Norris 1987-6-10 1525 Humboldt about 1-2 mi s Onion Lake (on Onion Lake Road); Six Rivers National Forest 1300 Comment
  SEINET200953 Image available Dichanthelium oligosanthes subsp. scribnerianum Joseph P. Tracy 1931-5-17 9428 Humboldt Rocky places along river. Trinity River Valley at Willow Creek Comment
  UC15031  Dichelostemma capitatum P. E. Goddard 1901-7-8 33 Humboldt Hupa Comment
  CAS-BOT-BC483666  Dichelostemma capitatum Doris K. Kildale 1928-5-6 5995 Humboldt Garberville, south fork of Eel River Comment
  SEINET6879154  Dichelostemma congestum Wanda P. Vestal, A. G. Vestal 1937-6-23 s.n. Humboldt Saddle near east end of Bald Hills, southeast of Orick. Comment
  HSC48151  Dichelostemma ida-maia Brad Klipfel 1975-6-17 665 Humboldt Along Titlow Hill Rd. Comment
  HSC98727  Dichelostemma ida-maia Cara Witte 2007-7-20 555 Humboldt Board Camp Butte. Forest Serivce Road 4E27. 1502 Comment
  CAS-BOT-BC501019  Dichelostemma ida-maia L. R. Abrams 1918-6-16 7135 Humboldt Willow Creek Comment
  CAS-BOT-BC501021  Dichelostemma ida-maia Henry M. Pollard 1948-8-4 s.n. Humboldt Orleans Mt. 1371 Comment
  CDA39454  Dichelostemma ida-maia G. D. Barbe, T. C. Fuller 1974-6-17 1828 Humboldt Thorne Road, 4 miles west of Redway, southern part of the county. 0 Comment
  POM277001  Dichelostemma ida-maia Lyman Benson 1930-7-18 2188 Humboldt W of Willow Creek, Seaward N Coast Mtn range, W of Trinity. 457 Comment
  RSA21187  Dichelostemma ida-maia Carl B. Wolf 1937-8-11 9146 Humboldt North Coast Range, 3 mi W of little Van Duzen River at summit of grade - Dinsmore to Bridgeville. 762 Comment
  UC1950249  Dichelostemma ida-maia Barbara Ertter with Thomas J. Delendick 1987-5-16 6918 Humboldt Vista Point just W of Berry Summit on Hwy 299, open grassy S-facing slope Comment
  HSC69691  Digitalis purpurea R. Kalal 1980-5-18 24 Humboldt Hwy. 101, 0.5 mi. W of Orick 6 Comment
  UCD64093  Digitaria sanguinalis Joseph P. Tracy 1942-9-13 17316 Humboldt Eureka. 30 Comment
  SEINET5741149 Image available Dipsacus fullonum Lowell E. Urbatsch, Patricia B. Cox; Alan W. Lievens 1988-1 6110 Humboldt 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
  POM277202  Disporum hookeri var. hookeri Lyman Benson 1928-7-11 163 Humboldt Weott Ranger Station, Mt. Range: Seaward N Coast; Drainage Area: S Fork Eel River. 61 Comment
  JEPS61836  Disporum smithii W. L. Jepson 1932-7-27 16477 Humboldt Bull Creek Comment
  CAS-BOT-BC208662  Distichlis spicata David D. Keck 1938-8-5 4769 Humboldt Big Lagoon Comment
  HSC45111  Distichlis spicata R. Sutherland 1978-4-25 7 .25478 Humboldt 9 Comment
  RSA93304  Downingia elegans var. corymbosa F. W. Peirson 1923-7-10 3871 Humboldt Wood border opening near road about 6 miles N of Garberville Comment
  HSC57990  Draba howellii G. L. Clifton, Terry Griswold 1979-7-31 11738 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1805 Comment
  CAS-BOT-BC159611  Drymocallis glandulosa var. glandulosa Carl B. Wolf 1937-6-19 8908 Humboldt Van Duzen River at Dunns Mill, 5 mi. below Bridgeville 91 Comment
  HSC57943  Drymocallis lactea var. lactea G. L. Clifton, Griswold 1979-7-31 11614 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1719 Comment
  RSA693562  Dryopteris expansa Anstruther Davidson 1923-8-11 s.n. Humboldt Redwood Forest Comment
  BLMAR359  Echinochloa crus-galli Jennifer Anthony-Wheeler 2003-10-21 359 Humboldt Headwaters Forest Reserve, coming out of rice straw 487 Comment
  HSC58703  Eleocharis acicularis Griswold, Butler 1979-7-11 7086 Humboldt Near Twin Lakes, close to the town of Willow Creek 1417 Comment
  JEPS19330  Eleocharis bella Joseph P. Tracy 1935-7-27 14299 Humboldt McKay Prairie Trinity Summit 1584 Comment
  UC1103655  Eleocharis macrostachya Joseph P. Tracy 1935-8-25 14750 Humboldt Stone Lagoon 3 Comment
  UC666874  Eleocharis macrostachya Joseph P. Tracy 1934-7-14 13400 Humboldt near Blue Lake (along Mad River) Comment
  SEINET3910832  Eleocharis macrostachya Thomas Nelson 1977-9-22 3749 Humboldt Eureka Quad. Along east side of State Route 101 just north of the Eureka Airport.; 0 Comment
  HSC7324  Eleocharis pachycarpa J. P. Tracy, H. E. Parks 1931-6-7 9569 Humboldt Trinidad 61 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
  CAS-BOT-BC227348  Elymus elymoides Doris K. Kildale 1925-8-17 1260 Humboldt Trinity Summit 1917 Comment
  HSC58670  Elymus elymoides var. elymoides Gilbert Muth 1979-8-1 12106 Humboldt Near High Spring, close to the town of Hoopa. 1798 Comment
  HSC37236  Elymus glaucus Lon Hall 1975-6-19 394 Humboldt About 2 mi. N of Shelter Cove Rd. on Horse Mtn. Rd. 549 Comment
  HSC76198  Elymus glaucus Overton, Butler 1979-8-2 12509 Humboldt Near Bret Hole, close to the town of Hoopa 1554 Comment
  UC53395  Elymus glaucus Joseph Burtt Davy and Walter C. Blasdale 1899-6-16 5565 Humboldt Alton Comment
  UCD61884  Elymus glaucus P. B. Kennedy 1923-8-2 Humboldt Near top of grade - Bluff Creek to Arcata. Comment
  UC1103200  Elymus glaucus Joseph P. Tracy 1950-8-20 19327 1/2 Humboldt near Slate Creek; Klamath River 121 Comment
  HSC97925  Elymus glaucus subsp. glaucus Cara Witte 2007-6-14 277 Humboldt Along National Forest 1. Near Kinsey Ridge. 2 miles north of intersection with 4N06. 1319 Comment
  UC526785  Elymus multisetus Joseph P. Tracy 1933-7-25 12893 Humboldt Grouse Mountain North Coast Ranges 1524 Comment
  UC552764  Elymus multisetus H. E. Parks and Joseph P. Tracy 1934-6-27 11048 Humboldt Horse Mt. Northern Coast Ranges 1371 Comment
  UC526802  Elytrigia repens Joseph P. Tracy 1925-9-13 7267 Humboldt Eel River North Coast Ranges (mouth, on river bank) 6 Comment
  HSC64759  Epilobium brachycarpum Bruce Gordon 1978-8-8 125 Humboldt Redwood National Park, 40 m SW of Bald Hills Rd. about .6 mi. NW of junction of Bald Hills Rd. and K & K Rd. 716 Comment
  UC183696  Epilobium campestre Joseph P. Tracy 1912-8-4 3978 Humboldt Carlotta 60 Comment
  HSC16549  Epilobium canum subsp. latifolium Paul Shields 1955-9-25 Humboldt 17 mi. SE of Willow Creek Comment
  HSC43272  Epilobium ciliatum subsp. ciliatum R. Sutherland 1976-8-6 16 .6876 Humboldt 223 Comment
  UC562504  Epilobium ciliatum subsp. ciliatum Joseph P. Tracy 1933-8-6 12941 Humboldt along stream French Camp Ridge 1066 Comment
  UC1951302  Epilobium ciliatum subsp. glandulosum Robert F. Thorne and P. Everett 1965-8-9 35347 Humboldt along Hwy. 101 about 3 mi. N of Eureka. Comment
  HSC12701  Epilobium ciliatum subsp. watsonii Jana Kattenhorn 1970-10-28 155 Humboldt Mad River at the mouth of Lindsey Creek, N Bank Rd. off Hwy. 299 Comment
  RSA167260  Epilobium glaberrimum subsp. glaberrimum Joseph P. Tracy 1950-8-7 19272 Humboldt On trail between Box Camp and Croghan [Groghan] Hole, 2 miles east of Box Camp. Trinity Summit Comment
  HSC55081  Epilobium hallianum G. L. Clifton, Griswold 1979-7-31 11736 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa. 1845 Comment
  HSC74235  Epilobium minutum M. A. Baker 1980-7-11 2792 Humboldt Near Red Mtn. 1341 Comment
  UC20060  Epilobium oreganum Chesnut and Drew 1888-7-28 Humboldt Grouse Creek; ; Grouse Creek, Humboldt Co. Comment
  UC552238 Image available Epilobium oreganum Joseph P. Tracy 1933-7-25 12835 Humboldt Grouse Mountain North Coast Ranges Comment
  JEPS31490  Epilobium oregonense Joseph P. Tracy 1935-7-26 14260 Humboldt Water Dog Lakes Trinity Summit (meadows) 1828 Comment
  JEPS64369  Epipactis gigantea Lincoln Constance 1934-6-12 858 Humboldt Bull Cr. road and N. bank of S. Fork Eel River; South Fork Eel River, Bull Creek region, Dyerville Comment
  UC666979  Epipactis gigantea Joseph P. Tracy 1927-7-4 8243 Humboldt Blue Slide Van Duzen River 91 Comment
  UC902051  Epipactis gigantea Joseph P. Tracy 1949-7-7 18335 Humboldt Blue Slide Van Duzen River 91 Comment
  UC667937  Equisetum arvense Joseph P. Tracy 1937-7-2 15391 Humboldt ne of Hawkins Bar Happy Camp Mt.; Trinity Summit Range 1280 Comment
  SEINET5526477 Image available Equisetum telmateia Unknown 1983-6-1 Humboldt Lord Ellis Summit Comment
  HSC54581  Equisetum telmateia subsp. braunii Overton, Butler 1979-7-24 9625 Humboldt Near Titlow Hill, close to the town of Willow Cr. 1250 Comment
  HSC82219  Equisetum telmateia subsp. braunii Paul Wilson 1986-9-16 1053 Humboldt From jct. of Hwy. 101 at Arcata, 1.5 mi. E on Hwy. 299 to bridge 4-36R crossing the Mad River, then upriver about 100 m 30 Comment
  HSC880  Equisetum telmateia subsp. braunii D. B. Bader 1963-3-1 10 Humboldt Second of the Clam Beach Lagoons, W of Hwy. 101. Comment
  CDA37518  Equisetum telmateia subsp. braunii G. D. Barbe 1984-6-7 4164 Humboldt Along Highway 299, 17 miles east of Arcata and junction with Highway 101. Comment
  RSA53832  Eragrostis hypnoides Henry M. Pollard 1945-9-5 s.n. Humboldt Wilson Creek, Klamath River Canyon Comment
  RSA44365  Eragrostis mexicana subsp. virescens Henry M. Pollard 1947-8-30 s.n. Humboldt Near Wilson Creek, on Klamath River, (near Orleans) Comment
  CAS-BOT-BC284096  Eragrostis pectinacea var. pectinacea Henry M. Pollard 1944-9-1 s.n. Humboldt Near Orleans Comment
  POM356838  Erechtites minimus B. C. Templeton 1931-10-15 s.n. Humboldt Eureka Comment
  CAS-BOT-BC299909  Erechtites minimus H. M. Hall 1924-8-7 12079 Humboldt Near Orrick along highway from Crescent City to Orrick Comment
  POM51468  Erechtites minimus Joseph P. Tracy 1918-7-28 5088 Humboldt Sand Dunes of Ocean Beach at Humboldt Bay. Comment
  UC1199409  Erigeron biolettii Joseph P. Tracy 1933-9-9 13076 Humboldt along river near Garberville; South Fork Eel River 152 Comment
  UCR51767  Erigeron bloomeri var. nudatus H. E. Parks 1937-1 24- 22 Humboldt North Coast, Spruce Cove, Trinidad 61 Comment
  CAS-BOT-BC296108  Erigeron foliosus var. confinis J. W. Tilden 1946-6-21 s.n. Humboldt Bluff Creek Comment
  CAS-BOT-BC296114  Erigeron foliosus var. confinis Henry M. Pollard 1948-7-23 s.n. Humboldt Reece Point near Orleans Comment
  RSA21324  Erigeron foliosus var. confinis C. B. Wolf 1937-8-13 9218 Humboldt North coast range, 8 mi. east of Hoopa Valley on new road towards Trinity summit. 1220 Comment
  UC1199402  Erigeron foliosus var. mendocinus Joseph P. Tracy 1924-6-11 6695 Humboldt at Essex (Mad River gravel bar); Northern Coast Ranges, Mad River 30 Comment
  HSC5524  Erigeron glaucus J. W. Johnson 1961-8-17 1036 Humboldt Dune fields of W.M. Lanphere Farm, Samoa Peninsula Comment
  BLMAR715  Erigeron glaucus Jennifer Anthony-Wheeler 1995-4-4 715 Humboldt King range, growing on beach dunes S of 1st arch fence exclosure 6 Comment
  HSC90479  Erigeron glaucus Jean Hanson 1980-8-28 121 Humboldt Indian (Gunther) Island, Humboldt Bay, Eureka. W end of island between dikes. 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
  CAS-BOT-BC214584  Erigeron philadelphicus L. R. Abrams 1916-7-11 6051 Humboldt Mouth of Grizzly Creek on Van Duzon [Duzen] River Comment
  HSC71370  Erigeron philadelphicus J. P. Smith 1973-5-26 6843 Humboldt Scotia Bluffs along the Eel River near Rio Dell Comment
  UC169037  Erigeron philadelphicus var. philadelphicus Joseph P. Tracy 1912-7-4 3725 Humboldt near Hydesville; Northern Coast Region 60 Comment
  UC165068  Erigeron strigosus var. septentrionalis J. P. Tracy 1909-8-22 3078 Humboldt immediate vicinity Eureka 0 Comment
  HSC55063  Eriogonum compositum G. L. Clifton, Griswold 1979-7-31 11625 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1719 Comment
  HSC97398  Eriogonum compositum var. compositum Benjamin Hart, Erin Lonergan 2007-6-11 4 Humboldt 14.1 mi. S of Hwy. 299 on NF1 1524 Comment
  HSC46971  Eriogonum latifolium J. P. Smith, Thomas W. Nelson 1977-6-30 9209 Humboldt Samoa Peninsula just E of the drag strip. Comment
  RSA246713  Eriogonum latifolium Robert F. Thorne, Percy C. Everett 1965-8-5 35162 Humboldt Samoa Dunes. 3 Comment
  SD38692  Eriogonum latifolium Edith A. Purer 1932-7-30 4669 Humboldt South of Orick, sand dunes Comment
  CAS-BOT-BC259285  Eriogonum lobbii Henry M. Pollard 1946-9-2 s.n. Humboldt Orleans Mt. 1524 Comment
  CAS-BOT-BC259542  Eriogonum luteolum var. luteolum Mrs. E. C. Van Dyke 1931-6-30 s.n. Humboldt Willow Creek Comment
  RSA60495  Eriogonum nudum var. nudum John H. Thomas 1949-6-13 926 Humboldt Klamath River Valley between Weitchpec and Hoopa Comment
  CAS-BOT-BC269868  Eriogonum nudum var. pubiflorum Carl D. Duncan 1920-9-21 316 Humboldt In the vicinity of Hoopa Comment
  NY323556  Eriogonum speciosum V. K. Chesnut 1888-7-23 s.n. Humboldt Hy-Am-Pum Valley; South Fork of Trinity River Comment
  CAS-BOT-BC267925  Eriogonum umbellatum David Imper 1981-8-12 907 Humboldt Near Tish Tang A Tang Creek, Salmon Mt. Quad 1779 Comment
  HSC74698  Eriogonum umbellatum Gail Newton 1981-7-24 2291 Humboldt Near Chaparral Mtn. 1512 Comment
  CAS-BOT-BC267967  Eriogonum umbellatum var. argus Doris K. Kildale 1925-8-16 1219 Humboldt Trinity Summit 1917 Comment
  HSC43079  Eriogonum umbellatum var. argus Brad Klipfel 1973-7-31 224 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  CAS-BOT-BC444000  Eriogonum umbellatum var. nelsoniorum James L. Reveal 2001-7-18 8346 Humboldt Along U.S. Forest Service Road 1 northwest of Grouse Mountain at milepost 14.3, about 10.3 air miles southwest of Sayler 1371 Comment
  UC1980592 Image available Eriogonum umbellatum var. nelsoniorum James L. Reveal 2001-7-18 8345 Humboldt Along U. S. Forest Service Road 1 at south end of Whiting Ridge, about 0.5 air miles west-northwest of High Salt Ground and 9.3 air miles west of Hyampom. Comment
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Jun 19 2014
  OBI10943  Eriogonum umbellatum var. polyanthum Carl B. Wolf 1937-8-13 9221 Humboldt North Coast Range, 8 mi E of Hoopa Valley on New road towards Trinity summit 1219 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
  HSC49961  Eriophyllum lanatum Maralyn O'Meara 1974-7-11 546 Humboldt Kneeland, Barry Ridge Comment
  HSC75943  Eriophyllum lanatum var. achilleoides Overton, Butler 1979-7-24 9706 Humboldt Near Black Rock, close to the town of Willow Creek. 1554 Comment
  HSC44133  Eriophyllum lanatum var. achilleoides Thomas W. Nelson, Jane P. Nelson 1977-7-1 3579 Humboldt W side of road N from Alder Springs, head of N Fork of Conley Creek 1463 Comment
  HSC79441  Eriophyllum lanatum var. arachnoideum Kenneth Clark 1980-6-14 671 Humboldt Western slope of Dead Man's Gulch 145 Comment
  HSC91916  Eriophyllum lanatum var. arachnoideum E. Mackey 1986-7-21 Humboldt Patrick's Point State Park; Wedding Rock Trail Comment
  UC129580  Eriophyllum lanatum var. grandiflorum Mrs. M. H. Manning 1901-6-7 Humboldt near Hupa Comment
  CAS-BOT-BC301688  Eriophyllum lanatum var. lanceolatum V. Rattan 1875-1-1 s.n. Humboldt Unspecified Comment
  UC668047  Erodium cicutarium Joseph P. Tracy 1933-5-28 12407 Humboldt at Eureka Eureka 15 Comment
  HSC100484  Erodium cicutarium Carl C. Marshall Jun 1887 478 Humboldt Everywhere. Comment
  HSC8499  Erodium cicutarium D. E. Anderson 1962-3-17 1935 Humboldt 4 mi. S of Lone Star Ranch Comment
  SEINET12118220  Eryngium aristulatum J. P. Tracy 1912-1 3777 & 4001 Humboldt Alton 91 Comment
  HSC56931  Erysimum capitatum var. capitatum G. L. Clifton, Marvin Butler 1979-7-26 9361 Humboldt Near Salmon Mtn., close to the town of Forks of Salmon 1935 Comment
  RSA168934  Erythronium californicum Joseph P. Tracy 1950-4-20 18616 Humboldt Buck Mountain, lower foothills of its northwest slope. 2 miles west of Dinsmores. 762 Comment
  SEINET3991605  Erythronium californicum Unknown 1938-6-13 15896 Humboldt Horse Mountain , in open forest of Jeffrey Pine , on red soil in serpentine belt. 1433 Comment
  HSC97573  Erythronium grandiflorum C. Witte 2007-5-18 38 Humboldt Grouse Mountain Lookout. 1644 Comment
  UC666965  Erythronium grandiflorum Joseph P. Tracy 1933-7-16 12774 Humboldt openings in forest near McKay Camp; South Fork Mountain 1676 Comment
  HSC15503  Erythronium revolutum G. N. Bos 1965-5-2 245 Humboldt 8 mi. E of Korbel on Bald Mtn. Rd. 793 Comment
  HSC46009  Eschscholzia californica Catherine Chin 1978-9-8 113 Humboldt Arcata, A and 11th St. Comment
  HSC103834  Eucephalus tomentellus Haggard 2000-8-22 71957 Humboldt Along US Forest Service Rd. 1, southeast of Blue Lake Comment
  CAS-BOT-BC310492  Euchiton sphaericus Joseph P. Tracy 1935-9-1 14752 Humboldt North Coast Ranges. Near Dyerville 91 Comment
  POM358934  Euchiton sphaericus H. M. Pollard 1948-7-27 s.n. Humboldt Near mouth of Red Cap Creek, near Orleans Comment
  NY263155  Euphorbia occidentalis V. K. Chesnut 1888-7-22 Humboldt Hy-Am-Pum (spelling?) Comment
  UC54897  Euphorbia spathulata Chesnut and Drew 1888-7-23 Humboldt Hyampon Comment
  CAS-BOT-BC310678  Euthamia occidentalis Doris K. Kildale 1926-8-29 2599 Humboldt Van Duzen River near Strong's Station Comment
  CAS-BOT-BC310682  Euthamia occidentalis S. K. Harris; Charlotte Wilder 1938-9-7 s.n. Humboldt Bars of the Van Dusen River, above Blue Slide Comment
  CAS-BOT-BC458291  Euthamia occidentalis Carl D. Duncan 1920-9-22 s.n. Humboldt Bank of Trinity River, Hoopa Valley Comment
  HSC25940  Euthamia occidentalis Thomas W. Nelson 1970-10-31 295 Humboldt Eel River near N end of the Scotia Bluff. Comment
  OBI5245  Fallopia sachalinensis T. C. Fuller 1968-7-30 17447 Humboldt NE side of Hwy 101 fwy overpass, Fields landing Comment
  HSC9991  Festuca arundinacea D. E. Anderson 1965-9-5 4084 Humboldt Along Mad River, 3 mi. S of Blue Lake Comment
  HSC41223  Festuca californica Robert M. Specht 1976-7-24 512 Humboldt 4 mi S of Hwy. 299 on Titlow Rd. to Horse Mtn. Comment
  SEINET260371 Image available Festuca californica R. Spellenberg 1992-7-10 10246 Humboldt E edge county 8 mi WSW of Salyer 6 mi S of Berry Summit on CA Hwy 299; USFS 1372 Comment
  BLMAR13  Festuca idahoensis Brad Barr June, 1982 13 Humboldt King range, HJ ridge Comment
  RSA10135  Festuca idahoensis Joseph P. Tracy 1933-7-25 12890 Humboldt Grouse Mountain, North Coast Ranges 1524 Comment
  BLMAR23  Festuca myuros Brad Barr June, 1982 23 Humboldt King range, Smith cabin Comment
  CAS-BOT-BC278808  Festuca occidentalis Victor Duran 1933-5-11 3410 Humboldt Van Duzen River, near Bridgeville Comment
  CAS-BOT-BC278814  Festuca occidentalis Alice Eastwood; John Thomas Howell 1937-6-22 4713 Humboldt Near Harris Comment
  HSC41382  Festuca occidentalis J. O. Sawyer 1970-6-27 2304 Humboldt Site 318. 1494 Comment
  HSC58759  Festuca occidentalis Overton, Butler 1979-7-26 9993 Humboldt Near Willow Creek 1341 Comment
  UC187113  Festuca occidentalis J. P. Tracy 1903-5-22 1876 Humboldt Alder Point Eel River 152 Comment
  UCD66125  Festuca occidentalis P. B. Kennedy 1923-8-23 Humboldt Near Orleans, near top of grade - Red Bluff to Arcata. Comment
  UCD66138  Festuca occidentalis A. H. Murphy 1951-6-25 70 Humboldt Snow Camp meadow, ca. 8 miles e.n.e. of Kneeland. Comment
  BLMAR39  Festuca perennis Brad Barr 39 Humboldt King range, hidden valley enclosure Comment
  HSC83339  Festuca rubra Andrea Pickart 1987-6-26 Humboldt Arcata, Lanphere-Christensen Dunes Preserve, 3 mi. W of Arcata. Comment
  UC525639  Festuca rubra Joseph P. Tracy 1927-7-4 8238 Humboldt Lone Star Creek North Coast Ranges, Iaqua District 609 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
  CAS-BOT-BC282516  Festuca subbiflora W. R. Dudley 1899-6-20 s.n. Humboldt Bull Creek and Eel River Comment
  CAS-BOT-BC278621  Festuca subulata Joseph P. Tracy 1935-7-27 14295 Humboldt Trinity Summit. Open places at McKay Prairie 1584 Comment
  HSC70481  Festuca subulata Gail Newton 1980-7-20 1632 Humboldt Near Bell Swamps 1426 Comment
  UCD66439  Festuca subulata P. B. Kennedy 1923-8-3 Humboldt South of Scotia by road through redwoods off highway. Comment
  UC188848  Festuca subuliflora J. Burtt Davy and W. C. Blasdale 1899-6-13 5494 Humboldt Camp Grant North Coast Ranges Comment
  UC249609  Foeniculum vulgare Joseph P. Tracy 1922-8 6104 Humboldt Alton Northern Coast Region, Alton 30 Comment
  CHSC68501  Fragaria chiloensis Vernon H. Oswald 1997-4-10 8327 Humboldt Elk Head, north end of Trinidad State Beach. Near the bluffs overlooking the ocean. 30 Comment
  HSC46955  Fragaria chiloensis J. P. Smith, Thomas W. Nelson 1977-6-30 9205 Humboldt Samoa Peninsula just E of the drag strip 6 Comment
  UC584127  Fragaria chiloensis David D. Keck and J. Clausen 1935-6-16 3390 Humboldt mouth of Little River Comment
  SEINET4090923  Fragaria chiloensis O. M. Clark 1932-1 702 Humboldt North Eureka. Comment
  UC1198724  Fragaria chiloensis Joseph P. Tracy 1918-5-5 4922 Humboldt Ocean Beach Humboldt Bay 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
  HSC55336  Fragaria vesca Griswold, Butler 1979-7-12 7183 Humboldt Near Groves Prairie, close to the town of Willow Creek. 1256 Comment
  HSC71666  Fragaria vesca Gail Newton 1980-6-24 553 Humboldt Near Ladder Rock 1500 Comment
  CAS-BOT-BC457926  Fragaria vesca subsp. californica Doris K. Kildale 1927-3-20 2910 Humboldt Phillipsville, south fork of Eel River Comment
  CAS-BOT-BC52735  Frangula californica subsp. californica Carl B. Wolf 1934-6-30 5842 Humboldt Back of Shelter Cove 60 Comment
  CAS-BOT-BC52737  Frangula californica subsp. californica Carl B. Wolf 1927-8-30 1226 Humboldt 2 mi. s. of Petrolia on the Matole River, near point where road crosses river. Comment
  CAS-BOT-BC53405  Frangula californica subsp. occidentalis Carl B. Wolf 1931-8-30 2377 Humboldt Lord Ellis Road, 9 mi. above Willow Creek on grade from Willow Creek to Blue Lake 304 Comment
  HSC72613  Frangula californica subsp. occidentalis J. P. Smith 1977-7-3 9261 Humboldt Six Rivers National Forest. FS Rd. 13N01, 3 mi. from its junction with Hwy. 36 549 Comment
  CAS-BOT-BC59993  Frangula purshiana Doris K. Kildale 1928-7-1 5304 Humboldt French Camp on Orick-Martin's Ferry Road. Comment
  HSC63001  Frangula purshiana David Wheeler 1979-5-17 114 Humboldt Stagecoach Rd., 1 mi. from the Trinidad Post Office Comment
  HSC89760  Frangula purshiana M. Roantree 1985-5-30 73 Humboldt E side of Trinidad Head along dirt road Comment
  SD37645  Frangula purshiana Edith A. Purer 1933-5-10 3625 Humboldt none listed Comment
  UCD113176  Frangula purshiana W. F. Murison 1965-9-30 s.n. Humboldt Kneeland. 822 Comment
  POM130724  Frasera albicaulis var. nitida H. P. Chandler 1901-06 1486 Humboldt Klamath River. Comment
  UC275552  Fritillaria affinis Joseph P. Tracy 1923-4-15 6184 Humboldt Redwood Creek, at Berry's Redwood Creek; Northern Coast Ranges, , Berry's 274 Comment
  UC175284  Fritillaria affinis Joseph P. Tracy 1913-6-20 4228 Humboldt nw slope of Buck Mountain Buck Mountain; Northern Coast Ranges, Buck Mountain 762 Comment
  SEINET255379  Fritillaria lanceolata Joseph P. Tracy 1913-6-20 4228 Humboldt Lower foothills of Buck Mountain, on its NW slope. 762 Comment
  CAS-BOT-BC130448  Fritillaria purdyi Doris K. Kildale 1928-3-28 4364 Humboldt Kneeland Prairie 853 Comment
  UC1197629  Fritillaria purdyi Joseph P. Tracy 1926-5-15 7488 Humboldt Kneeland Prairie; Northern Coast Ranges, Kneeland Prairie 762 Comment
  HSC40954  Galium aparine Linda M. Barker 1976-6-14 1601 Humboldt 3 mi. W of Arcata Comment
  UC416655  Galium aparine Joseph Burtt Davy and Walter C. Blasdale 1899-6-10 5403 Humboldt Hubbard's Station North Coast Ranges Comment
  HSC74746  Galium bolanderi Gail Newton 1981-8-7 2430 Humboldt Near Bug Creek Butte 1244 Comment
  RSA698804  Galium californicum J. R. Bruff 1937-8-17 916 Humboldt Richardson Grove. Comment
  UC1196118  Galium muricatum Joseph P. Tracy 1940-8-25 16709 Humboldt near High Prairie; Bald Mountain 1066 Comment
  UC180221  Galium parisiense Joseph P. Tracy 1914-7-4 4520 Humboldt 5 mi e Korbel; Northern Coast Ranges, Angels Ranch 762 Comment
  UC1192013  Galium trifidum Malcolm A. Nobs and S. Galen Smith 1949-8-3 1160 Humboldt 1 mi s Fields Landing (borders of irrigation ditch); Eel River Valley Comment
  UC1143113  Galium triflorum H. L. Person 1931-7-30 27 Humboldt Fieldbrook Eureka Quadrangle Comment
  CAS-BOT-BC303392  Gamochaeta ustulata Joseph P. Tracy 1936-8-23 15163 Humboldt Carlotta 60 Comment
  RSA46655  Garrya buxifolia Doris K. Kildale 1937-9-14 15361 Humboldt Grouse Mountain Comment
  CAS-BOT-BC199025  Garrya congdonii H. L. Mason 1926-1-1 2603 Humboldt Blue Lakes Comment
  HSC62874  Garrya elliptica J. M. DiTomaso 1979-5-20 1059 Humboldt Above College Cove at Elks Head, 1 mi. N of Trinidad. Comment
  RSA183514  Garrya elliptica R. I. Bonn 1965-3-5 3 Humboldt Four miles west of Arcata on Lanphere Road. Comment
  UCD121101  Garrya elliptica Linda M. Barker 1976-1-24 1309 Humboldt Coastal forest and dunes 3 miles west of Arcata. Comment
  RSA183630  Garrya fremontii D. E. Anderson 1965-4-24 3537 Humboldt Along Titlow Hill Road, ca. two miles from its junction with Highway 299. Comment
  SEINET12518332 Image available Gastridium ventricosum Harley P. Chandler 1901-1 1506 Humboldt Klamath River, North Coast Ranges 427 Comment
  UC562736  Gaultheria ovatifolia Joseph P. Tracy Jul 16 1930-Jul 19 1930 9022 Humboldt near McKay Camp (South Fork Mountain); Northern Coast Ranges, South Fork Mountain 1676 Comment
  CAS-BOT-BC58910  Gaultheria shallon Volney Rattan 1879-6-1 s.n. Humboldt unspecified Comment
  HSC38934  Gaultheria shallon Linda M. Barker 1976-5-13 1482 Humboldt 3 mi. W of Arcata. Comment
  HSC59576  Gaultheria shallon Rick Lundquist 1979-5-23 104 Humboldt 3.4 mi. up Fickle Hill Rd. from 11th St. 274 Comment
  UC412681  Gaultheria shallon Mrs. M. H. Manning 1901-7-27 316 Humboldt near Hupa (Bald Hills); Bald Hills Comment
  SEINET11996979  Gaultheria shallon F. H. Utech, Sato, T.; Ohara, M. 1990-1 90 293 a Humboldt 2.4 mi W of US 101 on CA 169 from Klamath to Klamath Glen along Klamath River 50 Comment
  UC35398  Gayophytum diffusum subsp. parviflorum Chesnut and Drew Humboldt Comment
  JEPS27563  Gayophytum humile Joseph P. Tracy Jul 16 1930-Jul 19 1930 8940 Humboldt near McKay Camp; Northern Coast Ranges, South Fork Mountain 1676 Comment
  UC1222477  Genista monspessulana Joseph P. Tracy 1941-5-10 16905 Humboldt outskirts Eureka 45 Comment
  UCD105709  Genista monspessulana Collector unknown Date unknown s.n. Humboldt location unknown. Comment
  JEPS47045  Gentiana affinis var. ovata W. L. Jepson 1921-8-11 9411 Humboldt Big Lagoon, Humboldt coast Big Lagoon Comment
  JEPS47047  Gentiana affinis var. ovata W. L. Jepson 1902-8-1 2134 Humboldt Loleta 60 Comment
  HSC101055  Gentiana plurisetosa Sydney Carothers 1998-8-10 201 Humboldt Patterson Meadow 1555 Comment
  HSC96464  Gentiana sceptrum Gordon Leppig 1997-8-3 636 Humboldt Big Lagoon County Park, Big Lagoon Bog. 3 Comment
  RSA46721  Gentiana sceptrum Doris K. Kildale 1937-8-26 15344 Humboldt Christmas Prairie Comment
  UC1197396  Geranium carolinianum Joseph P. Tracy 1929-5-5 8558 Humboldt Miranda, along South Fork of Eel River Northern Coast Ranges, South Fork of Eel River 121 Comment
  UC179955  Geranium carolinianum Joseph P. Tracy 1914-5-14 4436 Humboldt Fort Seward Northern Coast Region 121 Comment
  HSC8644  Geranium dissectum W. D. Stevens 1967-7-14 36 Humboldt Along Bear Creek, 1 mi. upstream from new Hwy. 101 bridge. Comment
  HSC44760  Geranium oreganum Maralyn O'Meara 1972-6-8 80 Humboldt Along Bald Hills Rd, 16.4 mi. E of junction with Hwy. 101 Comment
  RSA0029454  Geranium oreganum Volney Rattan 1882-06 s.n. Humboldt Van Dusen [Van Duzen] Hills. Comment
  HSC23678  Gilia capitata Tim Baroni 1971-7-5 88 Humboldt 8 mi. E of Petrolia Comment
  UC1197923  Gilia capitata subsp. pacifica Joseph P. Tracy 1925-5-24 7010 Humboldt Kneeland Prairie 762 Comment
  CAS-BOT-BC225470  Gilia millefoliata Mrs. H. C. Cantelow 1935-5-31 825 Humboldt Unspecified Comment
  HSC16987  Gilia millefoliata Norman H. Moe 1962-5-17 Humboldt Lanphere's Place Comment
  UC1051593  Gilia millefoliata Joseph P. Tracy 1948-6-12 18067 Humboldt sand dunes near Samoa (on Humboldt Bay); , near Samoa 6 Comment
  HSC100595  Gilia tenella Carl C. Marshall 469 Humboldt Near Garberville. Comment
  UC177194  Githopsis specularioides Joseph P. Tracy 1913-6-19 4207 Humboldt opposite Buck Mountain (Dinsmore's Ranch); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  HSC37857  Glaux maritima Peter Sorensen 1976-6-2 Humboldt Woodley Island Comment
  UC154100  Glehnia littoralis subsp. leiocarpa J. P. Tracy 1901-8-7 1261 Humboldt sand hills of Ocean Beach at Samoa opposite Eureka Comment
  UCD127514  Glehnia littoralis subsp. leiocarpa Linda M. Barker 1976-6-22 1626 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  HSC38427  Glyceria elata D. E. Anderson, J. P. Smith 1971-6-14 - 1049 Humboldt Along railroad tracks at P.G.&E. power plant S of Eureka. Comment
  HSC75278  Glyceria elata J. O. Sawyer, D. A. Thornburgh 1980-9-9 4077 Humboldt Mill Creek Lake and surrounding meadows Comment
  SEINET267677 Image available Glyceria occidentalis Gordon Leppig 1996-5-5 329 Humboldt Arcata Healthsport parking lot of Union St. 2 Comment
  CAS-BOT-BC302619  Gnaphalium palustre Joseph P. Tracy 1933-8-30 13043 Humboldt North Coast Ranges. Grouse Mountain 1524 Comment
  HSC103783  Gnaphalium palustre M. Mesler, K. A. Wayman 2015-8-4 1645 Humboldt McKay Meadow 1545 Comment
  SD88350  Gnaphalium purpureum Darley F. Howe 1972-6-30 Humboldt Trinidad Comment
  HSC55216  Goodyera oblongifolia Walter Overton 1979-8-1 12373 Humboldt Near Mill Creek, Middle Fork, close to the town of Hoopa. 1341 Comment
  HSC76552  Goodyera oblongifolia Teresa Prendusi 1981-7-7 126 Humboldt Near Slate Creek Butte. 1158 Comment
  UC582833  Goodyera oblongifolia P. A. Munz 1936-8-10 14336 Humboldt 15 mi e of Fortuna (Van Duzen River); Van Duzen River Comment
  CAS-BOT-BC304751  Grindelia hirsutula Edward Lee 1934-8-17 1148 Humboldt East shore of Big Lagoon, 35 miles north of Eureka 3 Comment
  JEPS41866  Grindelia hirsutula Joseph P. Tracy 1918-7-1 4976 Humboldt 3 mi s of the point of Cape Mendocino (near ocean shore, following up ravines) 152 Comment
  SEINET10724140  Grindelia hirsutula Harold E. Parks Parks 24190 Humboldt Gravel near water, Big Lagoon. Comment
  POM160899  Grindelia hirsutula var. davyi Joseph P. Tracy 1918-7-7 5038 Humboldt Near Garberville. 122 Comment
  HSC103971  Grindelia stricta var. stricta C. Reynolds 2015-4-12 31 Humboldt Along Freshwater Beach, north of the Kuchel Visitor Center 1 Comment
  POM264515  Grindelia stricta var. stricta H. E. Parks 1941-08 24190 Humboldt Big Lagoon. Comment
  RSA18065  Grindelia stricta var. stricta C. B. Wolf 1927-8-22 783 Humboldt Big Lagoon. Comment
  HSC56345  Hackelia bella Griswold, Butler 1979-7-10 6282 Humboldt Near Board Camp Mtn., close to the town of Willow Creek 1372 Comment
  JEPS67940  Hackelia bella H. W. Grinnell 1932-7-22 Humboldt near Blake Lookout; South Fork Mountain 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
  HSC99536  Hackelia californica K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-28 201 Humboldt Near North Trinity Mtn, along trail to Water Dog Lakes, Six Rivers National Forest. 1738 Comment
  HSC74473  Hackelia micrantha Gail Newton 1980-7-23 1744 Humboldt Near Packsaddle Ridge 1463 Comment
  JEPS67933  Hackelia micrantha W. L. Jepson 1902-7-16 2041 Humboldt Trinity Summit 2133 Comment
  HSC102116  Hastingsia alba M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 1020 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  HSC44510  Hastingsia alba Brad Klipfel 1973-7-1 116 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  CAS-BOT-BC302444  Hazardia whitneyi var. discoidea Henry M. Pollard 1946-8-28 s.n. Humboldt Near summit of Orleans Mt. 1828 Comment
  HSC74414  Helenium bigelovii Gail Newton 1980-8-10 2032 Humboldt Near Blake Mtn. 1707 Comment
  UC53952  Helenium bigelovii J. P. Tracy 1901-5-1 1204 Humboldt Humboldt Bay North Coast Ranges, Humboldt Bay 30 Comment
  JEPS35023  Helenium bigelovii Joseph P. Tracy 1937-8-12 15627 Humboldt Lake Prairie Bald Mountain, Lake Prairie 1066 Comment
  CAS-BOT-BC306866  Helenium bolanderi Doris K. Kildale 1929-7-10 8398 Humboldt Big Lagoon Comment
  UC668203  Helenium bolanderi Joseph P. Tracy 1938-7-6 16017 Humboldt Big Lagoon 3 Comment
  HSC35869  Helenium bolanderi Thomas W. Nelson, James Nelson 1975-8-5 2125 Humboldt Beside rd. to Table Bluff 1.0 mi. W of Copenhagen Rd. Comment
  RSA167314  Helenium bolanderi Joseph P. Tracy, H. E. Parks 1950-7-16 11686 Humboldt Park's place, 2 miles N of Trinidad. Comment
  CAS-BOT-BC309416  Helenium puberulum L. R. Abrams 1922-6-25 8232 Humboldt 2 mi south of Fortuna Comment
  HSC100436  Hemizonella parvula Carl C. Marshall Jun 1886 25 Humboldt South Fork Mtn. Comment
  CDA30696  Hemizonia congesta M. K. Beyers, I. Shepardson 2009-9-13 248 Humboldt Off the eastern side of State Route 254 (Avenue of the Giants), along the Eel river, on and along a steep-cut bank that has been cemented over here, probably to prevent erosion. 0 Comment
  CAS-BOT-BC306180  Hemizonia congesta subsp. congesta Carl B. Wolf 1927-8-29 1218 Humboldt Seacoast, Devil's Gate, south of Cape Mendocino Comment
  CAS-BOT-BC309984  Hemizonia congesta subsp. tracyi M. S. Jussel 1931-5-2 s.n. Humboldt 6 miles from Garberville Comment
  CAS-BOT-BC309993  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
  UC1199366  Hemizonia congesta subsp. tracyi Joseph P. Tracy 1940-10-17 16768 Humboldt Camp Grant, Eel River 45 Comment
  RSA24305  Heracleum maximum C. B. Wolf 1941-2-25 9956 Humboldt Dry Lagoon State Park 8 Comment
  UC176961  Heterocodon rariflorum Joseph P. Tracy 1912-7-25 3822 Humboldt Kneeland Prairie; Northern Coast Ranges 762 Comment
  UC34953  Heterocodon rariflorum Chesnut and Drew 1888-7-9 Humboldt Kneeland Comment
  CAS-BOT-BC311053  Heterotheca oregona var. oregona John Thomas Howell 1936-8-29 12889 Humboldt Bluffs of Eel River, 11 miles n. of Garberville 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
  CAS-BOT-BC311057  Heterotheca oregona var. oregona Doris K. Kildale 1926-5-31 2025 Humboldt Miranda, on South Fork of Eel River Comment
  CAS-BOT-BC311075  Heterotheca oregona var. rudis Doris K. Kildale 1926-8-8 2478 Humboldt Dyerville Bridge 45 Comment
  CAS-BOT-BC311077  Heterotheca oregona var. rudis S. K. Harris 1938-8-24 s.n. Humboldt Eel River, near Fernbridge Comment
  HSC20195  Heuchera micrantha J. F. Knezevich 1968-5-21 451 Humboldt 15 mi. E of jct. of Hwy. 299 with Hwy. 101, past Blue Lake Comment
  CAS-BOT-BC420720  Heuchera micrantha var. diversifolia M. S. Jussel 1931-5-2 s.n. Humboldt 6 miles from Garberville Comment
  CAS-BOT-BC312391  Hieracium albiflorum Doris K. Kildale 1928-6-24 7078 Humboldt Redwood Creek at Berry's 289 Comment
  HSC57620  Hieracium albiflorum G. L. Clifton, Griswold 1979-7-25 10746 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1814 Comment
  HSC81930  Hieracium albiflorum Thomas W. Nelson, Jane P. Nelson 1979-7-3 4947 Humboldt Along road to Joe Losey property at junction of Kneeland and Maple Creek Rds. 610 Comment
  HSC56999  Hieracium bolanderi Overton, Butler 1979-7-24 9580 Humboldt Near Titlow Hill, close to the town of Willow Creek 1097 Comment
  HSC59801  Hippuris vulgaris Clark L. Miller 1979-5-24 7155 Humboldt Clam beach ponds off Hwy. 101 N of McKinleyville Comment
  HSC90661  Hippuris vulgaris Gail Newton 1982-6-10 3638 Humboldt Elk River Wildlife Area, Eureka Comment
  HSC36309  Hippuris vulgaris David Sohrakoff 1972-11-12 1 Humboldt Clam Beach ponds Comment
  UC198615  Hippuris vulgaris Joseph P. Tracy 1917-5-30 4807 Humboldt near mouth of Little R.; Northern Coast Ranges 6 Comment
  HSC5261  Holcus lanatus John Warner Hosking 1966-8-5 Humboldt Near BSA, Humboldt State College campus, Arcata. Comment
  HSC74670  Holcus lanatus Gail Newton 1981-8-5 2355 Humboldt Near Bug Creek, E Fork. 820 Comment
  JEPS75424  Holcus lanatus W. L. Jepson 1932-8-1 16467 Humboldt Bull Creek 121 Comment
  RSA22954  Holcus lanatus A. C. Browne 1936-6-11 s.n. Humboldt Patrick's Point State Park. Comment
  UC963839  Holcus lanatus H. E. Parks and S. T. Parks August, 1943 24260 Humboldt Spruce Cove Trinidad (Trinidad); North Coast Ranges, Spruce Cove 60 Comment
  CAS-BOT-BC149908  Holodiscus discolor Clarence R. Quick 1959-7-24 59 -26 Humboldt Bee Mt., ca. 12 miles southwest of Orleans Comment
  HSC58057  Holodiscus discolor G. L. Clifton, Griswold 1979-8-1 11927 Humboldt Near Mill Creek Lakes, close to the town of Hoopa. 1692 Comment
  HSC70991  Holodiscus discolor Gail Newton 1980-7-15 1576 Humboldt Near Sims Mtn. 1311 Comment
  RSA183531  Holodiscus discolor D. E. Anderson 1963-9-1 2806 Humboldt Near Kneeland. 732 Comment
  RSA449759  Holodiscus discolor Thekla Mohr 1918-07 3349 Humboldt Eel River. Comment
  UC183616  Horkelia californica Joseph P. Tracy 1912-7-22 3791 Humboldt Northern Coast Ranges, Table Bluff 91 Comment
  UCSB2822  Horkelia tridentata Constance, Lincoln; Beetle, Alan; Tracy, Joseph 1940-5-17 Humboldt Larrabee Valley, near Eureka 762 Comment
  HSC100883  Hosackia gracilis Carl C. Marshall Apr 1885 113 Humboldt Coast region everywhere. Comment
  HSC74204  Hydrophyllum occidentale M. A. Baker 1980-7-19 3007 Humboldt Near Bret Hole. 1814 Comment
  HSC13540  Hydrophyllum tenuipes Jack Rockwell 1962-5-5 60 Humboldt W side Jacoby Creek 18 Comment
  HSC53943  Hypericum anagalloides Griswold, Butler 1979-7-11 6982 Humboldt Near Snow Camp Lake, close to the town of Willow Creek. 1393 Comment
  HSC13822  Hypericum anagalloides D. E. Anderson 1961-9-9 1801 Humboldt Big Lagoon County Park Comment
  UC1103552  Hypericum anagalloides Mrs. Alma Bonstell 1912-8-5 Humboldt Christmas Prairie Northern Coast Ranges, Christmas Prairie 914 Comment
  CDA30714  Hypericum perforatum M. K. Beyers, I. Shepardson 2009-9-13 250 Humboldt Off the eastern side of State Route 254 (Avenue of the Giants), along the Eel river, on and along a steep-cut bank that has been cemented over here, probably to prevent erosion. 0 Comment
  UC668259  Hypericum perforatum Joseph P. Tracy 1937-4-3 15244 Humboldt Trinity R. Valley at Willow Creek; 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
  UC169053  Hypochaeris glabra Joseph P. Tracy 1912-7-25 3812 Humboldt Kneeland Prairie 762 Comment
  HSC78973  Hypochaeris glabra L. P. Janeway, Paul Wilson 1984-5-7 760 Humboldt N Spit of Humboldt Bay, on BLM lands near the Coast Guard Station 3 Comment
  HSC100106  Hypochaeris radicata A. Montalvo 1975-5-24 271 Humboldt Samoa Dunes off Samoa Blvd., across from the boat landing Comment
  CAS-BOT-BC206844  Iliamna latibracteata Joseph P. Tracy 1949-9-1 18535 Humboldt Willow Creek Canyon, along Trinity Highway 762 Comment
  UC1103805  Ionopsidium acaule Joseph P. Tracy 1933-3-12 10919 Humboldt Ferndale, St. Mary's Cemetery Ferndale; North Coast Ranges, , St. Mary's Cemetery 15 Comment
  HSC56224  Ipomopsis aggregata G. L. Clifton, Griswold 1979-8-2 12260 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  SEINET12056852  Iris douglasiana H. P. Chandler 1901-1 1262 Humboldt Redwood Belt 457 Comment
  SEINET12058930  Iris douglasiana E. A. York 1990-1-10 2662 Humboldt USGS Redwood Field Station, Arcata Comment
  HSC34872  Iris purdyi Thomas W. Nelson, James Nelson 1975-5-5 1781 Humboldt Beside Hwy. 101, 5 mi. S of Salmon Creek bridge Comment
  HSC63123  Iris tenax subsp. klamathensis M. A. Baker 1979-5-17 731 Humboldt Along Wilson Creek, just E of FS Rd. 15N01 Comment
  SEINET12051377  Iris tenax subsp. klamathensis F. H. Utech, Sato, T.; Ohara, M. 1990-1 90 -314 Humboldt Six Rivers National Forest, 0.5 mi S of CA 199 on French Hill Rd (USFS Rd 411) 150 Comment
  HSC96255  Iris tenuissima Laurel Goldsmith, Wanda Naylor 2005-6-10 9 Humboldt Coldspring Camp, 7.4 mi. S of Hwy. 299 on NF1 1370 Comment
  HSC79260  Iris tenuissima T. Jimerson, J. Pageau 1979-5-1 439 Humboldt 0.2 mi. S of Hwy. 96 on Ishi Pishi Rd., Orleans Comment
  RSA120727  Isatis tinctoria S. S. Tillett 1956-7-6 606 Humboldt Above Klamath River, along Ishi Rish Road, 1 mi N of Orleans. 168 Comment
  UC667944  Isoetes howellii Joseph P. Tracy 1935-5-25 13842 Humboldt Fort Seward 106 Comment
  JEPS60150  Isoetes nuttallii Joseph P. Tracy 1938-7-7 16034 Humboldt at Cold Springs Grouse Mt; Grouse Mt., Cold Springs 1432 Comment
  UC479412  Jaumea carnosa Marcus E. Jones, A. M. 1931-7-16 29118 Humboldt Arcata Comment
  UC2493  Juncus bolanderi Harley P. Chandler Jun 1901 1531 Humboldt Klamath River North Coast Ranges 426 Comment
  HSC13992  Juncus bufonius Paul Shields 1965-6-16 Humboldt HSC campus Comment
  HSC39051  Juncus bufonius Linda M. Barker 1976-6-22 1619 Humboldt 3 mi. W of Arcata Comment
  HSC45438  Juncus covillei Thomas W. Nelson, Jane Nelson 1978-7-2 4403 Humboldt Along margin of Lost Lake 1433 Comment
  UC1152108  Juncus covillei Joseph P. Tracy 1930-6-29 8818 Humboldt near Dinsmore's; Buck Mountain Comment
  HSC71730  Juncus effusus subsp. pacificus M. A. Baker 1980-6-26 2450 Humboldt Near Sims Creek 610 Comment
  HSC56988  Juncus ensifolius Walter Overton, Marvin Butler 1979-7-23 9551 Humboldt Near Titlow Hill, close to the town of Willow Creek 1280 Comment
  UC1152097  Juncus ensifolius Joseph P. Tracy 1938-7-12 16053 Humboldt w end Table Bluff Comment
  HSC57986  Juncus exiguus G. L. Clifton, Terry Griswold 1979-7-31 11721 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1805 Comment
  UC184198  Juncus kelloggii Joseph P. Tracy 1914-5-14 4431 Humboldt Fort Seward Northern Coast Ranges 121 Comment
  HSC39758  Juncus lescurii Peter Sorensen 1976-8-8 Humboldt Woodley Island Comment
  HSC102215  Juncus mertensianus M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 1131 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  HSC63280  Juncus parryi M. A. Baker 1979-6-27 930 Humboldt Rock faces E of Oregon Creek Comment
  HSC43841  Juncus regelii Maralyn O'Meara 1974-7-11 530 Humboldt Kneeland, Barry Ridge along private road Comment
  JEPS67133  Juncus xiphioides Joseph P. Tracy 1915-9-12 4671 Humboldt Mouth of Laribee Creek Northern Coast Ranges 60 Comment
  SEINET11788655  Juncus xiphioides J. P. Tracy 1938-1 16171 Humboldt Lake Prairie Comment
  HSC58135  Juniperus communis var. saxatilis Gilbert Muth 1979-8-1 12143 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1677 Comment
  CAS-BOT-BC58889  Kalmia microphylla subsp. microphylla Volney Rattan 1878-1-1 s.n. Humboldt unspecified Comment
  SEINET2031088 Image available Kalmia polifolia Joseph P. Tracy 1935-1 14261 Humboldt Trinity Summit; meadows at Water Dog Lakes 1829 Comment
  POM225119  Keckiella corymbosa Philip A. Munz 1936-8-9 14328 Humboldt South fork of Eel River, 5 miles north of Humboldt-Mendocino county line. Comment
  RSA44300  Keckiella corymbosa H. M. Pollard 1946-8-10 s.n. Humboldt Klamath River flood plain near Wilson Creek. Comment
  UC177173  Keckiella corymbosa Joseph P. Tracy 1912-7-26 3847 Humboldt Kneeland Prairie; Northern Coast Ranges 762 Comment
  CAS-BOT-BC237834  Keckiella lemmonii Joseph P. Tracy 1930-7-25 8883 Humboldt Trinity River Valley, at Willow Creek 152 Comment
  UC602548  Kelloggia galioides Joseph P. Tracy 1930-7-19 9081 Humboldt near McKay Camp; South Fork Mountain 1676 Comment
  UC1132151  Koeleria macrantha H. S. Yates 1936-6-11 5711 Humboldt lower sw slope Buck Mountain; South Fork Peak Quad., lower sw slope Buck Mountain Comment
  UCD86088  Koeleria macrantha Joseph P. Tracy 1936-8-2 15072 Humboldt Humboldt County. 1066 Comment
  UC552225  Lactuca biennis Joseph P. Tracy 1935-7-21 14118 Humboldt mouth Bremer Creek (near Willow Creek); Trinity River Valley 152 Comment
  SEINET202279 Image available Lactuca ludoviciana Joseph P. Tracy 1950-9-22 19368 Humboldt Klamath River near Slate Creek. Below Orleans 8 miles 122 Comment
  SEINET11811175  Lactuca serriola J. P. Tracy 1949-1 18403 Humboldt Trinity River valley, at Willow Creek 152 Comment
  HSC69891  Lagophylla ramosissima Thomas W. Nelson, Jane P. Nelson 1977-7-30 3661 Humboldt Beside State Rte. 36, 1 mi. E of Dinsmore. 732 Comment
  CAS-BOT-BC341442  Lagophylla ramosissima H. M. Hall 1924-8-10 12081 Humboldt Van Duzen River, near Carlotta Comment
  UCD125067  Lamium purpureum Joseph P. Tracy 1945-5-10 17508 Humboldt Eureka. 45 Comment
  HSC62179  Lapsana communis J. M. DiTomaso 1980-11-4 1997 Humboldt SE of junction of 11th St. and Hwy. 101., Arcata Comment
  UC1199132  Lasthenia californica subsp. californica Joseph P. Tracy 1922-5-29 6083 Humboldt South Yager Creek valley Northern Coast Ranges, South Yager Creek valley 762 Comment
  JEPS17255  Lasthenia glaberrima Joseph P. Tracy 1930-6-15 8748 Humboldt near Bosworth's; Northern Coast Ranges, Larrabee Creek 457 Comment
  RSA53806  Lathyrus latifolius H. M. Pollard 1946-9-1 s.n. Humboldt Near Wilson Creek, Orleans region Comment
  POM312874  Lathyrus palustris Malcolm A. Nobs, S. G. Smith 1949-8-3 1187 Humboldt Southern outskirts of Eureka Comment
  BLMAR275  Lathyrus polyphyllus Jennifer Anthony-Wheeler 1999-7-30 275 Humboldt Lacks Creek, growing by fdsides adjacent to forest 1219 Comment
  JEPS55299  Lathyrus torreyi W. L. Jepson 1902-6-25 1937 Humboldt near Acorn P.O. Comment
  SEINET956313  Lathyrus vestitus Joseph P. Tracy 1929-1 8579 Humboldt Phillipsville. Comment
  UC709417  Lathyrus vestitus Joseph P. Tracy 1933-5-18 12195 Humboldt near Essex; Mad River 30 Comment
  HSC27890  Lathyrus vestitus subsp. bolanderi Clifton Raymond Chesbrough 1973-6-19 70 Humboldt 0.25 mi. from Harris and T St. on U St. Comment
  JEPS79919  Lathyrus vestitus var. ochropetalus Joseph P. Tracy 1929-5-5 8579 Humboldt Phillipsville, facing South Fork of Eel River South Fork of Eel River; Northern Coast Ranges 121 Comment
  CHSC68554  Layia carnosa Vernon H. Oswald 1997-4-29 8360 Humboldt Samoa Dunes Recreation Area at the south end of the North Spit separating Humboldt Bay from the ocean. 0 Comment
  HSC89532  Layia carnosa C. K. Meyers 1990-6-13 Humboldt South Spit, west side of Humboldt Bay, on bay side of road 3 Comment
  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
  UC1101254  Lemna minuscula Malcolm A. Nobs, S. Galen Smith 1949-8-9 1237 Humboldt on s side of town of Blue Lake Blue Lake Comment
  CAS-BOT-BC534876  Lemna valdiviana Henry M. Pollard 1948-7-21 s.n. Humboldt New Orleans Comment
  RSA18016  Leontodon nudicaulis C. B. Wolf 1927-8-22 777 Humboldt Big Lagoon. Comment
  UC1239531  Leontodon saxatilis subsp. saxatilis Joseph P. Tracy 1921-7-10 5848 Humboldt Big Lagoon Northern Coast Region, Big Lagoon 6 Comment
  UC1116214  Lepidium nitidum Joseph P. Tracy 1948-4-4 17962 Humboldt near Samoa; Humboldt Bay 6 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
  HSC35964  Leptosiphon androsaceus Thomas W. Nelson, Jane P. Nelson, James Nelson 1975-6-21 1948 Humboldt Hwy. 36, 5 mi. E of Bridgeville Comment
  POM203227  Leptosiphon androsaceus M. S. Jussel 1931-5-2 s.n. Humboldt near Garberville Comment
  RSA44412  Lessingia nemaclada H. M. Pollard 1948-8-3 s.n. Humboldt Orleans Comment
  UC581778  Lessingia nemaclada Joseph P. Tracy 1929-8-18 8656 Humboldt opposite Buck Mountain; Northern Coast Ranges, Van Duzen River, Dinsmore's Ranch 670 Comment
  HSC91923  Leucanthemum vulgare E. Mackey 1986-7-21 Humboldt Patrick's Point State Park near Ceremonial Rock. Comment
  UCR122365  Leucanthemum vulgare George K. Helmkamp, E. A. Helmkamp 2001-7-8 6977 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
  HSC5361  Leucanthemum vulgare R. Spellenberg 1964-6-15 411 Humboldt Near Humboldt Bay on the S side of Arcata. Comment
  UCR70876  Lewisia cotyledon var. howellii Lincoln Constance, R. C. Rollins 1942-5-12 2885 Humboldt MOuth of Bluff Creek, 6 mi NE of Weitchpec 152 Comment
  HSC98516  Lewisia triphylla C. Witte 2007-5-18 45 Humboldt Near Bottleneck Spring. 1575 Comment
  UC926380  Leymus X vancouverensis A. S. Hitchcock 1915-7-13 1506 Humboldt sand dunes near Samoa; Eureka Comment
  RSA10128  Leymus triticoides Joseph P. Tracy 1929-6-3 8601 Humboldt Trinity River Valley, at Willow Creek 152 Comment
  RSA12433  Lilium bolanderi Carl B. Wolf 1934-7-2 5860 Humboldt 2 miles from Snow Camp on road to Bald Mountain. 1067 Comment
  UC1198239  Lilium columbianum Joseph P. Tracy 1926-7-25 7748 Humboldt Big Lagoon; Northern Coast Region 60 Comment
  CAS-BOT-BC508394  Lilium columbianum Mrs. L. B. Kildale 1925-6-7 s.n. Humboldt Between Trinidad Head and Orick Comment
  CAS-BOT-BC508400  Lilium columbianum L. R. Abrams; R. Bacigalupi 1922-6-25 8260 Humboldt Between Trinidad and Big Lagoon Comment
  RSA130333  Lilium columbianum Albert M. Vollmer, L. Beane 1953-07 121 Humboldt Humboldt County Comment
  RSA34281  Lilium humboldtii subsp. humboldtii J. Wendell Howe 1934-07 s.n. Humboldt Bald Mountain Comment
  CAS-BOT-BC130646  Lilium kelloggii Alice Eastwood; John Thomas Howell 1937-6-23 4851 Humboldt 5 miles from Kneeland on road to Korbel 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
  CDA35335  Limnanthes douglasii B. F. Kemp 1958-5-5 395 -58 Humboldt Loleta. 0 Comment
  HSC100568  Limnanthes douglasii Carl C. Marshall Jun 1887 68 Humboldt Damp soils throughout Humboldt. Comment
  HSC28137  Limnanthes douglasii J. D. Ackerman 1973-5-28 49 Humboldt Hwy. 299, Berry Summit. Comment
  UC52737  Linanthus androsaceus W. C. Blasdale 1896-6-6 Humboldt Graham's Comment
  UC906690  Linanthus bicolor Joseph P. Tracy 1942-5-16 17344 Humboldt Garberville 152 Comment
  UC908667  Linanthus bicolor Joseph P. Tracy 1933-6-13 12576 Humboldt near summit on road from Hoopa w to Bair's (Hoopa Mountain); Hoopa Mountain 1066 Comment
  UCR52359  Linanthus parviflorus K. Berg, R. Bonning 1983-5-21 479 Humboldt Chezem Road, 2.1 mi. east of Redwood Creek Bridge. 595 Comment
  JEPS11330  Linaria vulgaris Milo S. Baker 1923-8-4 171 Humboldt Stone Lagoon; North Coast, Stone Lagoon Comment
  CDA6370  Linaria vulgaris T. C. Fuller 1968-7-3 17445 Humboldt Northwest corner of overpass of Highway 101 freeway at Tompkins Hill Road, 1 mile south of Fields Landing. 0 Comment
  HSC97615  Linum bienne Cara Witte 2007-6-4 192 Humboldt Cold Spring. 0.5 mile S of Titlow Hill. 1386 Comment
  UC668021  Lipocarpha micrantha Joseph P. Tracy 1931-9-7 9650 A Humboldt Trinity R. Valley at Willow Creek; Trinity R. Valley, Willow Creek 152 Comment
  UC14967  Listera caurina Joseph Burtt Davy 1899-6-19 5648 Humboldt near top of Ridge Hoopa Mt. Comment
  UC146221  Listera cordata Joseph P. Tracy 1908-6 2723 Humboldt nw slope Buck Mountain; Northern Coast Ranges, Van Duzen River 304 Comment
  UC1196365  Lithocarpus densiflorus Joseph P. Tracy 1948-8-15 18137 Humboldt 2 mi e Grove's Prairie; Trinity Summit 1524 Comment
  UC1196367  Lithocarpus densiflorus Joseph P. Tracy 1921-10-2 5964 Humboldt Northern Coast Ranges, Kneeland Prairie Kneeland Prairie; Northern Coast Ranges, Kneeland Prairie 762 Comment
  SEINET8981428  Lithocarpus densiflorus W. D. Billings 1940-6-25 s.n. Humboldt Cedar Creek, 35 miles east of Arcata Comment
  CAS-BOT-BC36584  Lithocarpus densiflorus var. echinoides Russell W. Beeson June 1 - July 1 [no year] B- 26 Humboldt Pilot Ridge, Forest Stanislaus 1584 Comment
  HSC20227  Lithophragma affine G. N. Bos 1965-5-15 266 Humboldt 2 mi. W of Berry Summit along U.S. 299. 701 Comment
  HSC45399  Lithophragma campanulatum Thomas W. Nelson, Jane Nelson 1977-6-19 3492 Humboldt N of Goat Hill 1616 Comment
  UC906704  Lithophragma heterophyllum Harold E. Parks and Joseph P. Tracy 1942-5-16 11558 Humboldt vicinity Garberville 152 Comment
  UCD115917  Lobularia maritima Joseph P. Tracy 1946-6-2 17556 Humboldt Garden escape, sand dunes, near Samoa, on Humboldt Bay. 6 Comment
  UC1199427  Logfia gallica Joseph P. Tracy 1938-6-9 15884 Humboldt Dobbyn Creek 152 Comment
  CAS-BOT-BC283402  Lolium multiflorum Malcom A. Nobs; S. Galen Smith 1949-8-3 1177 Humboldt Salt marshes around Fields Landing Comment
  UC163597  Lolium multiflorum Jos. Burtt Davy 1899-5 5556 Humboldt Scotia Comment
  HSC32477  Lolium perenne Craig Guyer 1974-9-28 Humboldt 4th St. near Union, Arcata. Comment
  HSC99582  Lolium perenne K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-8-10 247 Humboldt Near North Trinity Mtn, 11. 9 mi east of Hoopa on Big Hill Rd (8N01), at Box Camp, Six Rivers National Forest. 1372 Comment
  SEINET200608 Image available Lolium perenne J. P. Tracy 1923-8-25 6539 Humboldt Eureka 13 Comment
  SEINET5527019 Image available Lomaria spicant Hicks, Carpenter 1977-7-12 Humboldt Orick Comment
  UC162334  Lomatium dasycarpum subsp. dasycarpum Joseph P. Tracy 1911-7-6 3345 Humboldt along rd. between Three Creeks and mouth of Willow Creek; Northern Coast Ranges 762 Comment
  HSC102607  Lomatium macrocarpum M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-28 1594 Humboldt Slopes above Bret Hole and below trail 6E18, 1.5 km SSW of Trinity Summit. 1778 Comment
  HSC56077  Lomatium macrocarpum G. L. Clifton, Terry Griswold 1979-7-31 11756 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa. 1845 Comment
  HSC36117  Lomatium macrocarpum J. D. Ackerman 1975-6-18 471 Humboldt Big Hill Rd., 10.4 mi. E of Hoopa and Hwy. 96 Comment
  HSC96070  Lomatium macrocarpum J. McIntire, S. Lyon 2005-6-15 12 Humboldt 1 mi. SE of Grouse Mtn. on FS 4N32 1610 Comment
  UC1222607  Lomatium macrocarpum Joseph P. Tracy 1951-6-24 19537 Humboldt atop ridge near Ashfield Butte (Kneeland Prairie); Kneeland Prairie 1676 Comment
  UC1197149  Lomatium tracyi Joseph P. Tracy 1933-7-9 12650 Humboldt Brannan Mt. Northern Coast Ranges, Brannan Mt. 1066 Comment
  HSC21544  Lomatium utriculatum B. R. Templeton 1962-5-24 Humboldt Grassy slopes about 19 mi. E of Arcata on Hwy. 299 Comment
  HSC41001  Lonicera conjugialis J. O. Sawyer 1975-10-17 2711 Humboldt S slopes of N Trinity Mtn. Comment
  HSC58184  Lonicera conjugialis G. L. Clifton, Griswold 1979-8-2 12272 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  UC602562  Lonicera conjugialis Joseph P. Tracy 1930-7-19 9094 Humboldt near McKay Camp; South Fork Mountain 1676 Comment
  BLMAR175  Lonicera hispidula Donald Hazlett 1994-6-7 175 Humboldt King range, near horse Mt. Ridge rd 670 Comment
  HSC90392  Lonicera involucrata Jean Hanson 1981-5-10 143 Humboldt Indian Island, Humboldt Bay, Eureka, W end of island. Comment
  UCD137380  Lonicera involucrata Roman Gankin 1965-8-6 547 Humboldt 1.3 miles south of Samoa, Samoa Peninsula. Comment
  UCSB22320  Lonicera involucrata Keefe, Joseph 1967-7-8 Humboldt Junction Crannell Road and Little River Drive, north of Eureka 6 Comment
  HSC97445  Lonicera involucrata var. ledebourii Ivy Watson 2008-10-11 57 Humboldt Near Mad River mouth, S bank, just above high tide line. Comment
  JEPS13670  Lonicera involucrata var. ledebourii W. L. Jepson with J. P. Tracy 1921-8-11 9408 Humboldt Big Lagoon Comment
  UCR270277  Lotus John F. Emmel 2003-7-30 1798 Humboldt North Coast Range, Redwood National Park, 16.6 road miles southeast of Hwy 101 on Bald Hills Road, c. 0.3-0.4 air mile west of Schoolhouse Peak 823 Comment
  HSC1873  Lotus aboriginus H. E. Parks Jul 1932 Humboldt Bishop Pine Lodge, Trinidad 61 Comment
  UC162608  Lotus aboriginus W. C. Blasdale 1896-5-31 Humboldt Eureka Comment
  HSC98251  Lotus aboriginus Yarick 1960-8-15 Humboldt 10 mi. W of Rd. Comment
  HSC96477  Lotus corniculatus Gordon Leppig 1997-6-19 444 Humboldt Big Lagoon County Park, Big Lagoon Bog 3 Comment
  UC1052840  Lotus crassifolius var. crassifolius W. L. Colwell 1955-6-7 24 Humboldt 3 mi w Weott (0.5 mi n of Grasshopper Mountain Lookout, Quad. 29-B-3) 914 Comment
  UCR45449  Lotus micranthus Barry Silver 1986-4-23 524 Humboldt North Coast Range, Bair Road, 9.5-10 mi NW of the junction with Hwy 299; Pine Ridge Summit Area 997 Comment
  JEPS55502  Lotus micranthus Lincoln Constance 1934-5-23 610 Humboldt above Look Prairie; South Fork Eel River, Bull Creek Region 365 Comment
  UC1197299  Lotus micranthus Joseph P. Tracy 1919-5-31 5146 Humboldt near Willow Creek (hillslopes at w side of Trinity River in valley of Trinity River); Northern Coast Ranges, Trinity River 152 Comment
  SEINET3694253 Image available Lotus purshianus Joseph P. Tracy 1937-8-12 15628 Humboldt Bald Mountain: Border of Lake Prairie Bog, 3 miles S of Murphy Meadows 1067 Comment
  UC170028  Lotus purshianus var. purshianus Joseph P. Tracy 1912-8-3 3964 Humboldt opposite Buck Mountain; Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  SEINET3559878 Image available Lotus torreyi Joseph P. Tracy 1914-7-4 4527 Humboldt High prairie on Bald Mountian 1067 Comment
  HSC98269  Lotus unifoliolatus var. unifoliolatus D. E. Anderson 1962-7-14 2256 Humboldt About 3 mi. E of Kneeland Comment
  CAS-BOT-BC342557  Luina hypoleuca Joseph P. Tracy 1917-9-2 4839 Humboldt Northern Coast Ranges. Grouse Mountain 1524 Comment
  HSC6870  Lunaria annua H. S. Logsdon 1964-4-11 19 Humboldt 4 mi. NE of Orick at Boye's Prairie, along Prairie Creek Comment
  RSA89561  Lupinus Philip A. Munz 1954-7-23 19861 Humboldt Road from Dinsmore to Mad River, near Humboldt-Trinity county line. 762 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
  UC503012  Lupinus adsurgens Joseph P. Tracy Jul 16 1930-Jul 19 1930 9059 Humboldt near Blake lookout, South Fork Mountain along summit; Northern Coast Ranges, South Fork Mountain 1737 Comment
  HSC99728  Lupinus albicaulis M. A. Baker 1979-6-7 797 Humboldt Along road to Telescope Peak next to stream between Telescope Peak and Snow Mtn. 915 Comment
  UC1223268  Lupinus albicaulis var. shastensis Joseph P. Tracy 1949-8-7 18433 Humboldt on road from Hoopa to Box Camp at summit of ridge near where the road to Big Hill turns off Trinity Summit; , rd fr Hoopa to Box Camp Comment
  RSA296737  Lupinus arboreus var. arboreus J. P. Smith, T. W. Nelson 1977-6-30 9218 Humboldt Samoa Peninsula just east of the drag strip. Comment
  HSC38083  Lupinus bicolor Thomas W. Nelson, James Nelson 1976-5-30 2605 Humboldt McKeown Ranch, N of Dinsmore. Comment
  UC15950  Lupinus bicolor Harley P. Chandler May, 1901 1146 Humboldt Humboldt Bay; Humboldt Bay, North Coast Ranges 3 Comment
  HSC78624  Lupinus bicolor L. P. Janeway 1984-5-16 785 Humboldt N Spit of Humboldt Bay, W side of Samoa Rd. just N of the boat ramp 3 Comment
  CAS-BOT-BC8425  Lupinus constancei T. W. Nelson; J. P. Nelson 1982-7-9 7079 Humboldt Blocksburg Quadrangle. Mt. Lassic (Signal Peak) and saddle to east. Comment
  RSA104683  Lupinus densiflorus var. densiflorus Joseph P. Tracy 1911-7-4 3280 Humboldt Valley of Trinity River near mouth of Willow Creek. 152 Comment
  RSA161252  Lupinus latifolius subsp. latifolius Peter H. Raven, R. Snow 1958-7-20 13645 Humboldt 1.1 miles south of junction of Friday Ridge Road on Titlow Hill Road, near Grouse Ridge. Comment
  HSC98892  Lupinus latifolius var. latifolius Cara Witte 2008-6-18 749 Humboldt Horse Mountain Botanical Area. Approximately 1 mile east of junction 6N36 and 6N36A. 1394 Comment
  UC774981  Lupinus luteolus Carl B. Wolf 1937-8-12 9211 Humboldt on road to Kneeland 20 mi n Bridgeville; North Coast Range 457 Comment
  UC1949190  Lupinus nanus Barbara Ertter with Thomas J. Delendick 1987-5-16 6923 Humboldt Vista Point just W of Berry Summit on Hwy 299, ca 15 airmiles E of Arcata; S-facing slope Comment
  UC502999  Lupinus polyphyllus var. polyphyllus Joseph P. Tracy 1932-7-14 10558 Humboldt wet meadow at Corral Prairie (Trinity Summit); Klamath Mountains, Trinity Summit 1524 Comment
  CDA5442  Lupinus rivularis D. G. Kelch 2007-7-25 7 .503 Humboldt Along Hwy 299 between Lord-Ellis Summit and Hwy 96. Comment
  UC150122  Lupinus rivularis J. P. Tracy 1910-5-8 3134 Humboldt immediate vicinity Eureka 0 Comment
  UC179936  Lupinus rivularis Joseph P. Tracy 1914-6-14 4507 Humboldt Hydesville; North Coast Ranges 60 Comment
  HSC59681  Lupinus rivularis George Kirn 1977-10-12 Humboldt South shore Little River, 1/2 mile from mouth 8 Comment
  POM276520  Lupinus rivularis Lyman D. Benson 1928-7-10 423 Humboldt Fortuna 30 Comment
  HSC58042  Lupinus tracyi Gilbert Muth 1979-8-1 11890 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1877 Comment
  HSC59452  Lupinus tracyi Richard Runyon 1979-6-27 42 Humboldt Along trail to Trinity Summit Station, 50' S of intersection of Grogan hole-Devils backbone trail 1768 Comment
  HSC14891  Lupinus variicolor R. I. Bonn 1965-5-9 42 Humboldt 4 mi. W of Arcata on Lanphere Rd. Comment
  HSC14059  Luzula comosa R. I. Bonn 1965-5-7 31 Humboldt 4 mi. W of Arcata on Lanphere Rd. Comment
  HSC27555  Luzula comosa J. D. Ackerman 1973-3-27 36 Humboldt 1.5 mi. N of Manila Comment
  HSC56453  Luzula comosa Griswold, Butler 1979-7-12 7228 Humboldt Near Groves Prairie, close to the town of Willow Creek. 1256 Comment
  RSA368890  Luzula comosa var. laxa Henry M. Pollard 1948-7-22 s.n. Humboldt Perch Creek Canyon, near Orleans. Comment
  HSC58033  Luzula parviflora G. L. Clifton 1979-7-31 11867 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  UC1103676  Luzula parviflora Joseph P. Tracy 1901-4-26 1050 Humboldt Humboldt Hill Northern Coast Region, region about Humboldt Bay 0 Comment
  CHSC115875  Luzula subsessilis Peter F. Zika 2011-7-3 25492 Humboldt Titlow Hll Road, 3 road miles SE of Route 299 at Berry Summit,1 air km SW of Horse Mountain. 1190 Comment
  UC2982  Luzula subsessilis Harley P. Chandler May, 1901 1104 Humboldt Humboldt Bay North Coast Ranges, Humboldt Bay 30 Comment
  LA205865  Lycopodiella inundata Lawrence L. Kiefer; D. Branscomb 1964-5-20 1436 Humboldt Big Lagoon State Park 15 Comment
  HSC14221  Lycopus uniflorus H. E. Parks, J. P. Tracy 1924-8-3 6765 Humboldt Big Lagoon 6 Comment
  JEPS46466  Lysichiton americanus W. L. Jepson 1936-8-17 17916 Humboldt Fields Ld'g Comment
  UC1222701  Lysichiton americanus Joseph P. Tracy 1950-7-6 18992 Humboldt lower end of Burr Valley Comment
  SEINET11261198  Lythrum hyssopifolia Rick Lundquist 1979-5-18 100 Humboldt Arcata South Quadrangle. South G Street ca 1 mile south of Samoa Boulevard.; 0 0 Comment
  UC562528  Lythrum hyssopifolia Joseph P. Tracy 1934-7-30 13512 Humboldt in front of South End of Stone Lagoon (Dry Lagoon); Dry Lagoon 3 Comment
  HSC15936  Lythrum hyssopifolia D. E. Anderson 1961-9-2 1761 Humboldt 3 mi. S of Cape Mendocino 3 Comment
  UC34191  Madia elegans Harley P. Chandler 1901-6-1 1409 Humboldt Klamath River North Coast Ranges 243 Comment
  UC494086  Madia elegans H. E. Parks and J. P. Tracy 1930-5-25 882 Humboldt Laribee Valley Comment
  POM265905  Madia elegans subsp. vernalis Lincoln Constance, Reed C. Rollins 1942-5-11 2874 Humboldt Hoopa Valley, 5 miles south of Hoopa. 122 Comment
  UC166085  Madia exigua Joseph P. Tracy 1911-7-5 3303 Humboldt near Willow Creek (hill slopes at w side of Trinity River); Northern Coast Ranges, Trinity River 182 Comment
  HSC57190  Madia gracilis Griswold, Butler 1979-7-11 6906 Humboldt Near Snow Camp Mtn., close to the town of Willow Creek. 1320 Comment
  HSC73478  Madia gracilis Gail Newton 1980-7-11 1333 Humboldt Near Red Mtn. 1341 Comment
  JEPS40345  Madia gracilis Joseph P. Tracy 1933-7-21 12817 Humboldt on road from Van Duzen River to South Yager (Redwood House, Bald Hills region of Humboldt County) 762 Comment
  CDA8284  Madia sativa T. C. Fuller 1958-6-17 594 -58 Humboldt Wildcat Ridge near Bunker Hill. 0 Comment
  CHSC69499  Madia sativa Vernon Oswald; Lowell Ahart 1997-9-4 8854 Humboldt Samoa Dunes Recreation Area at the south end of the North Spit separating Humboldt Bay from the ocean. 0 Comment
  HSC39774  Madia sativa Peter Sorensen 1976-7-11 Humboldt Woodley Island Comment
  CAS-BOT-BC343588  Madia sativa Joseph P. Tracy 1927-6-18 8176 Humboldt Northern Coast Ranges. Cape Mendocino. Southwestern slopes, fronting the ocean, three miles south of point of the cape 30 Comment
  CHSC27891  Maianthemum dilatatum Susan Perkins 1978-4-25 44 Humboldt Redwood Park, e end of 13th St., Arcata. 0.8 mi e of City Hall. 7 mi nne of Eureka. 48 Comment
  RSA13579  Maianthemum dilatatum H. E. Parks 1932-05 4289 Humboldt Bishop Pine Lodge, Trinidad. Comment
  CAS-BOT-BC508519  Maianthemum dilatatum Alice Eastwood 1907-4-21 35 Humboldt Port Trinidad Comment
  CAS-BOT-BC508521  Maianthemum dilatatum L. R. Abrams; R. Bacigalupi 1922-6-25 8300 Humboldt Near northern county line Comment
  HSC22832  Maianthemum dilatatum C. Norman Christiansen 1964-4-15 Humboldt Arcata Community Forest Comment
  SEINET12050376  Maianthemum dilatatum F. H. Utech 1988-1 88 -272 Humboldt 14 mi W of Bridgeville enroute to Carlotta on CA 36, Van Duzen County Park, Pamplin Grove 50 Comment
  UCD161450  Maianthemum dilatatum K. Esau 1934-5-8 s.n. Humboldt Redwood Highway near Scotia. Comment
  HSC15642  Maianthemum racemosum subsp. amplexicaule Paul Shields May 1955 Humboldt 7 mi. W of Hoopa Comment
  HSC41355  Maianthemum racemosum subsp. amplexicaule Brad Klipfel 1974-8-2 507 Humboldt Horse Mtn. Comment
  HSC48830  Maianthemum racemosum subsp. amplexicaule Brad Klipfel, J. P. Smith, J. O. Sawyer 1973-5-27 40 Humboldt Grogan's Hole near N Trinity Mtn. 1829 Comment
  HSC101981  Maianthemum stellatum M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-12 878 Humboldt Patterson Meadows 1566 Comment
  HSC103295  Maianthemum stellatum Michael G. Simpson, Michael Mesler, Michael Mayer 2008-5-27 3010 Humboldt Six Rivers National Forest; ~0.3 mi. south-southeast of Cold Spring Camp; ~ 3.3 aerial mi. south-southeast of Horse Mtn. Radio Tower. 1401 Comment
  HSC60291  Maianthemum stellatum Phyllis Krieg 1979-4-28 Humboldt Azalea Park along trail, McKinleyville 30 Comment
  CAS-BOT-BC347412  Malacothrix floccifera Marcus E. Jones 1931-7-16 29095 Humboldt Junction, East of Arcata Comment
  RSA246761  Malus fusca Robert F. Thorne 1965-8-9 35300 Humboldt Big Lagoon. 3 Comment
  UC72979  Malus fusca H. P. Chandler May 1905 Humboldt Eureka Comment
Read comments
Jun 17 2020
  CHSC29262  Marah oregana David M. Hutt 1964-6-28 1108 Humboldt Wailaki Recreation site of the Bureau of Land Management. First valley back from the ocean by rd running from Calif. Rt. 1 to Honeydew, and c. 2 mi S of junction with Shelter Cove Rd. Comment
  HSC49806  Marah oregana R. York 1979-4-13 224 Humboldt Just N of College Cove Comment
  HSC60078  Marah oregana M. A. Baker 1977-6-6 371 Humboldt Hoopa Comment
  HSC69639  Marah oregana R. Kalal 1980-5-19 20 Humboldt Arcata, Humboldt State University campus, Union St. near 14th St. 40 Comment
  HSC7035  Marah oregana D. E. Anderson 1962-3-31 1952 Humboldt Coastal area of Prairie Creek State Park Comment
  RSA273320  Marah oregana J. D. Ackerman 1975-6-10 451 Humboldt 1 mile N of Samoa Bridge turnoff from Samoa Blvd., S of Manila, Humboldt Bay Comment
  UC1223204  Matricaria discoidea Joseph P. Tracy 1942-7-1 17368 Humboldt opposite Buck Mountain (Dinsmore's); Van Duzen River 762 Comment
  UCD107900  Medicago polymorpha W. Williams 1951-1 s.n. Humboldt location unknown. Comment
  UCD66181  Melica californica D. W. Cooper 1956-6-5 s.n. Humboldt Upper Mattole area. Benbow Ranch, Ettersburg. Comment
  HSC98014  Melica harfordii Cara Witte 2007-7-12 531 Humboldt Ammon Ridge Road. Approximately 2 miles southeast of intersection with 5N10. 1353 Comment
  UC1132271  Melica harfordii H. S. Yates 1936-6-17 5721 Humboldt near Burr Valley; South Fork Pk. Quad. 914 Comment
  HSC75480  Melica subulata J. O. Sawyer 1980-7-18 3627 Humboldt North Trinity Mountain Research Natural Area, north of Mill Creek Lake to Red Cap Hole. Comment
  UC34140  Melica subulata Joseph Burtt Davy and Walter C. Blasdale 1899-6-10 5405 Humboldt Hubbard's Station; North Coast Ranges Comment
  UCD89113  Melica torreyana A. H. Murphy 1951-4-18 20 Humboldt Fort Seward. Comment
  SEINET5737441 Image available Melilotus officinalis Lowell E. Urbatsch, Patricia B. Cox; Alan W. Lievens 1988-1 6112 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
  HSC14252  Mentha canadensis H. E. Parks, S. T. Parks 1930-9-14 728 Humboldt Big Lagoon Comment
  JEPS63454  Mentha pulegium Joseph P. Tracy 1936-8-2 15078 Humboldt Orick 15 Comment
  HSC99259  Mentha pulegium David Adams 1960-8-20 Humboldt Whitlow (Sequoia) 60 Comment
  RSA259592  Menyanthes trifoliata Unspecified 1976-5-14 s.n. Humboldt Slump pond just northwest of McClellan Mountain. Comment
  UC154038  Menziesia ferruginea Joseph P. Tracy 1909-10-6 3110 Humboldt Head of Prairie Creek Prairie Creek; Northern Coast Ranges, Head of Prairie Creek 304 Comment
  RSA293124  Micropus californicus Thomas W. Nelson, Jane P. Nelson 1976-5-30 2621 Humboldt McKeown Ranch north of Dinsmore. Comment
  RSA167437  Micropus californicus Joseph P. Tracy 1947-5-10 17681 Humboldt Near Briceland Comment
  HSC102916  Microseris M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-3 1087 Humboldt Patterson Meadows 1555 Comment
  UC180185  Microseris borealis Joseph P. Tracy 1914-7-4 4541 Humboldt High Prairie Northern Coast Ranges, Bald Mountain 1066 Comment
  UC1223196  Microseris laciniata subsp. laciniata Joseph P. Tracy 1942-6-15 17169 Humboldt five mi n Garberville (along Eel River from South Fork Eel River to Scotia); Northern Coast Ranges, along Eel River from South Fork 60 Comment
  CAS-BOT-BC349237  Microseris nutans Joseph P. Tracy 1930-7-16 8900 Humboldt South Fork Mountain. Near McKay Camp 1676 Comment
  HSC102010  Microsteris gracilis M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-12 911 Humboldt Rustic Camp, northwest of Patterson Meadows 1512 Comment
  JEPS10486  Mimulus arvensis Joseph P. Tracy 1926-5-2 7435 Humboldt near South Fork; Trinity River Valley 182 Comment
  UC582707  Mimulus arvensis Joseph P. Tracy 1936-5-2 7435 Humboldt near South Fork; Trinity River Valley 182 Comment
  HSC20681  Mimulus aurantiacus var. aurantiacus J. R. Eichelberger 1964-5-13 87 Humboldt 2 mi. E of entrance to Azalea State Reserve on the N side of Mad River Comment
  HSC72410  Mimulus aurantiacus var. aurantiacus J. P. Smith 1973-5-26 6829 Humboldt Scotia Bluffs along the Eel River near Rio Dell Comment
  UC902229  Mimulus aurantiacus var. aurantiacus Joseph P. Tracy 1947-5-24 17691 Humboldt Devil's Canyon Big Lagoon 152 Comment
  UCSB10373  Mimulus aurantiacus var. aurantiacus Parks, H.; Parks, S. 1951-6-1 Humboldt Along bay shore near landing, Trinidad Comment
  UC1196799  Mimulus breweri Joseph P. Tracy 1912-7-31 3920 Humboldt near summit Buck Mountain; Northern Coast Ranges 1676 Comment
  UC1196802  Mimulus breweri Joseph P. Tracy 1933-7-26 12920 Humboldt Grouse Mountain North Coast Ranges 1615 Comment
  UC169098  Mimulus cardinalis Harley P. Chandler 1901-6-16 1520 Humboldt Somes Bar North Coast Ranges, Klamath River 426 Comment
  UC26907  Mimulus dentatus Harley P. Chandler May, 1901 1199 Humboldt Humboldt Bay North Coast Ranges 30 Comment
  UC41883  Mimulus kelloggii Harley P. Chandler June 1901 1480 Humboldt Klamath River North Coast Ranges 426 Comment
  POM265898  Mimulus kelloggii Lincoln Constance, R. C. Rollins 1942-5-12 2894 Humboldt At junction of Klamath and Salmon rivers, 1 mile south of Somes Bar. 152 Comment
  RSA275293  Mimulus moschatus Thomas W. Nelson, Jane P. Nelson 1977-7-4 3606 Humboldt Along road north from Alder Springs. 1524 Comment
  UC582711  Mimulus nasutus Joseph P. Tracy 1923-5-20 6218 Humboldt Kneeland Prairie 762 Comment
  UC169323  Mimulus nasutus Harley P. Chandler 1901-6-16 1509 Humboldt Somes Bar North Coast Ranges, Klamath River 426 Comment
  HSC82387  Mimulus primuloides var. primuloides Thomas W. Nelson 1979-7-11 5011 Humboldt N Trinity Mtn. and ridge to E. 1829 Comment
  HSC98812  Mimulus pulsiferae Cara Witte 2008-7-7 833 Humboldt Horse Mountain Botanical Area. 1/4 mile east of intersection National Forest 1, Forest Service Roads 6N36 and 6N38. 1415 Comment
  UC582492  Mimulus pulsiferae Joseph P. Tracy 1933-7-25 12838 Humboldt Grouse Mountain North Coast Ranges 1524 Comment
Read comments
Sep 10 2013
  HSC48677  Mimulus tilingii Brad Klipfel 1973-7-31 252 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  UC1198336  Minuartia californica Joseph P. Tracy 1927-3-27 7859 Humboldt near the South Fork; Trinity River Valley 182 Comment
  HSC45054  Minuartia douglasii R. Sutherland 1978-4-23 31 .23478 Humboldt 640 Comment
  HSC32136  Minuartia nuttallii subsp. gregaria D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5605 Humboldt Mt. Lassic and two smaller peaks to immediate E 1768 Comment
  UC176959  Minuartia nuttallii subsp. gregaria Joseph P. Tracy 1912-7-31 3926 Humboldt Buck Mountain Northern Coast Ranges (near the summit) 1676 Comment
  UC902075  Mitella caulescens Joseph P. Tracy 1949-6-25 18348 Humboldt near Box Camp; Trinity Summit 1524 Comment
  HSC24108  Mitella diversifolia J. O. Sawyer 1970-6-27 2307 Humboldt Site 318. 1494 Comment
  CAS-BOT-BC433035  Mitella ovalis C. V. Piper 1921-5-22 s.n. Humboldt Eureka Comment
  UC303175  Mitella ovalis Joseph P. Tracy 1923-6-20 6310 Humboldt White Thorn Valley Northern Coast Ranges (banks of creek) 304 Comment
  UC667082  Mitella ovalis Joseph P. Tracy 1933-5-14 12183 Humboldt along Trinity Highway Willow Creek Canyon 365 Comment
  HSC55867  Mitella trifida G. L. Clifton, Griswold 1979-7-25 10889 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1784 Comment
  SD56850  Mitellastra caulescens Darley F. Howe 1963-8-7 3806 Humboldt 23 mi west of west end to 6 Rivers north fork on #299 213 Comment
  CHSC63391  Moehringia macrophylla Vernon H. Oswald 1994-6-29 6361 Humboldt Titlow Hill Rd. (forest Rd.) 9.6 mi S of Hwy. 299, 4.5 mi S of 6N35, S of Willow Creek. 1572 Comment
  HSC72693  Moehringia macrophylla Gail Newton 1980-6-24 565 Humboldt Near Ladder Rock 67 Comment
  HSC74644  Moehringia macrophylla M. A. Baker 1980-5-17 1223 Humboldt Near Le Perron Peak 792 Comment
  SEINET892718  Monardella purpurea Joseph P. Tracy 1947-1 17782 Humboldt Trinity Summit; ridge top one mile west of Mud Springs, in serpentine formation 1158 Comment
  LA62409  Monardella sheltonii C. B. Wolf; 1934-7-1 5848 Humboldt along Eel River and redwood Highway, 1.2 mi. S of F. K. Lane Grove 60 Comment
  RSA0022786  Monardella villosa subsp. subserrata F. W. Peirson 1926-7-13 7050 Humboldt Near Blue Lake, Mad River Comment
  UC577376  Monardella villosa subsp. villosa Joseph P. Tracy 1937-7-11 15427 Humboldt Vicinity Garberville 121 Comment
  UC161062  Montia diffusa Joseph P. Tracy 1906-6-10 2487 Humboldt Kneeland Prairie, near Haughey's Mill Kneeland Prairie; Northern Coast Ranges, Kneeland Prairie 609 Comment
  UC161050  Montia fontana Joseph P. Tracy 1909-5-2 2955 Humboldt Northern Coast Region, at Eureka Eureka; Northern Coast Region, Eureka 0 Comment
  HSC31552  Montia parvifolia Glenn McGourty 1974-5-11 41 Humboldt Timber trail off Maple Creek Rd. in Kneeland Comment
  UC503092  Morella californica Joseph P. Tracy 1931-5-1 9332 Humboldt Northern Coast Ranges, Downs Prairie Comment
  HSC44168  Muhlenbergia filiformis Thomas W. Nelson, Jane P. Nelson 1977-9-3 3738 Humboldt Head of Bear Creek 1585 Comment
  HSC45287  Muhlenbergia filiformis Brad Klipfel 1973-6-10 294 Humboldt E face of Grogan's Hole, N Trinity Mtn. area Comment
  POM257954  Muhlenbergia filiformis Joseph P. Tracy 8920 Humboldt South Fork Mountain; in wet meadow at McKay Camp. 1677 Comment
  RSA152302  Muhlenbergia filiformis Joseph P. Tracy 1919-9-18 5233 Humboldt Trinity Summit. 1829 Comment
  UCD86717  Muhlenbergia filiformis Joseph P. Tracy 1919-9-18 5233 Humboldt Trinity Summit. 1828 Comment
  UCD86797  Muhlenbergia mexicana Eleanor Armstrong 1934-1 1149 Humboldt Richardson Grove. Comment
  JEPS70789  Myosotis discolor Lincoln Constance 1934-6-3 803 Humboldt along n. side of Redwood Hwy. at Dyerville; Bull Creek Region, S. Fork Eel R. Comment
  JEPS70782  Myosotis latifolia W. L. Jepson 1934-5-7 16685 Humboldt Dyerville Comment
  HSC27886  Myosotis sylvatica Clifton Raymond Chesbrough 1973-6-19 74 Humboldt 0.25 mi. from Harris and T St. on U St. Comment
  HSC63980  Myosotis sylvatica J. P. Smith 1973-5-26 6855 Humboldt Scotia Bluffs along the Eel River near Rio Dell Comment
  CAS-BOT-BC101670  Myrica californica Ira L. Wiggins 1930-7-11 4682 Humboldt near Samoa Comment
  HSC77867  Myriophyllum aquaticum J. Miller 1978-5-14 780514 .2 Humboldt Near Central Ave. and Murray Rd. in McKinleyville Comment
  UC535743  Narthecium californicum Eleanor Armstrong 1934-1 1176 Humboldt Patricks Point Comment
Read comments
Dec 5 2007
  UCD87652  Nassella pulchra A. H. Murphy 1951-2-28 4 Humboldt South of Petrolia. In Mattole Valley. Comment
  HSC60107  Nasturtium officinale M. A. Baker 1977-6-6 375 Humboldt Hoopa Comment
  UC162572  Navarretia atractyloides Joseph P. Tracy 1911-7-4 3302 Humboldt along Willow Creek (tributary of Trinity River) near its mouth Northern Coast Ranges, Trinity River, Willow Creek 182 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
  HSC97972  Navarretia divaricata subsp. divaricata Cara Witte 2007-6-21 322 Humboldt Board Camp Mountain. Forest Service Road 4N38. 1419 Comment
  SEINET200377  Navarretia intertexta Joseph P. Tracy 27 Jun to 30 Jul 1908 2799 Humboldt Valley of Van Duzen River opposite Buck Mountain. 305 Comment
  UC906686  Navarretia linearifolia subsp. linearifolia Joseph P. Tracy 1947-7-5 17794 Humboldt Mud Springs , Mud Springs (Trinity Summit) 1371 Comment
  HSC32561  Navarretia mellita Thomas W. Nelson 1973-9-3 1118 Humboldt McKeown Ranch N of Dinsmore Comment
  UC908640  Navarretia mellita Joseph P. Tracy 1934-7-9 13333 Humboldt 5 mi s Harris 762 Comment
  JEPS70473  Navarretia squarrosa Joseph P. Tracy 1935-7-18 14103 Humboldt Table Bluff 6 Comment
  UC169009  Nemophila heterophylla Mrs. M. H. Manning Mar. 1902 Humboldt Hupa Comment
  UC1239754  Nemophila menziesii var. atomaria Joseph P. Tracy 1927-4-23 7910 Humboldt Trinidad Trinidad (on coast bluffs) 3 Comment
  UC1239739  Nemophila parviflora Joseph P. Tracy 1949-6-6 18310 Humboldt ne Hawkins Bar (Happy Camp Mountain); Trinity Summit Range, , ne Hawkins Bar 1280 Comment
  CAS-BOT-BC219408  Nemophila parviflora Alice Eastwood 1943-6-10 18979 Humboldt Landsdale Grove, Redwood Highway Comment
  HSC99413  Nemophila parviflora var. austiniae K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-6-28 62 Humboldt Near North Trinity Mtn, 11. 9 mi east of Hoopa on Big Hill Rd (8N01), at Box Camp, Six Rivers National Forest. 1372 Comment
  JEPS1926  Nemophila pedunculata Joseph P. Tracy 1927-3-27 7858 Humboldt near South Fork Trinity River (Trinity River Valley); Northern Coast Ranges, nr South Fork Trinity River Valley 182 Comment
  UC1196162  Nicotiana quadrivalvis Joseph P. Tracy 1940-10-17 16769 Humboldt 2 to 5 mi e South Fork (along Eel River); Eel River 45 Comment
  UC774627  Nuphar lutea subsp. polysepala Carl B. Wolf 1937-9-9 9309 Humboldt 1 mi s of Capetown (on road to Cape Mendocino) 91 Comment
  RSA0013606  Nuphar lutea subsp. polysepala C. B. Wolf 1937-9-14 9353 Humboldt Town of Blue Lake. 15 Comment
  CAS-BOT-BC142296  Oemleria cerasiformis Doris K. Kildale 1926-3-2 1862 Humboldt Willow Creek Flat, Trinity River Valley 152 Comment
  HSC31804  Oemleria cerasiformis Steve Selva, Roger Jensen 1974-8-28 93 Humboldt Humboldt State University Freshwater Forest Comment
  HSC98741  Oemleria cerasiformis Cara Witte 2008-6-2 673 Humboldt White Oak Opening. 1231 Comment
  UCD81683  Oenanthe sarmentosa Chuck Hughes 2009-6-18 102 Humboldt Near Arcata. NE corner of intersection of Old Samoa Road and Pacheco Road. 1 Comment
  CDA38492  Oenanthe sarmentosa Margaret Bellue Jul 1933 s.n. Humboldt [no further data] 0 Comment
  UC902173  Oenothera wolfii Joseph P. Tracy 1949-8-8 18401 Humboldt Willow Creek Trinity River Valley 152 Comment
  CAS-BOT-BC349969  Oreostemma alpigenum var. andersonii Doris K. Kildale 1925-8-16 1195 Humboldt Trinity Summit 1828 Comment
  SEINET186016  Orobanche californica subsp. californica Joseph P. Tracy, H. E. Parks 1924-8-3 6761 Humboldt Big Lagoon 6 Comment
  POM43760  Orthocarpus faucibarbatus var. albidus Marcus E. Jones 1924-4-26 s.n. Humboldt Eureka. Comment
  RSA21660  Orthocarpus lithospermoides Carl B. Wolf 1937-6-14 8815 Humboldt North Coast Range, Kneeland Prairie 823 Comment
  HSC76408  Osmorhiza berteroi Teresa Prendusi 1981-7-24 478 Humboldt Near Whiteys Peak 1585 Comment
  UC1222754  Osmorhiza berteroi Joseph P. Tracy 1950-6-25 18889 Humboldt Burr Valley Buck Mountain (nw slope of mt.) 1066 Comment
  HSC33182  Osmorhiza purpurea Thomas W. Nelson 1974-4-20 1185 Humboldt Near Elk Head N of Trinidad Comment
  HSC59074  Oxalis articulata subsp. rubra Thomas Wood 1979-5-3 147 Humboldt In Arcata, in front yard at 3799 Spear Ave. 9 Comment
  JEPS43158  Oxalis corniculata Lincoln Constance 1934-5-29 719 Humboldt upper Look Prairie; South Fork of Eel River, Bull Creek Region 365 Comment
  HSC16702  Oxalis oregana A. E. Inman 1962-5-25 Humboldt E bank of Mad River, W of Camp Bauer Comment
  HSC22047  Oxalis oregana B. D. Rogers, D. E. Anderson 1965-5-1 511 Humboldt 4 mi. SE of Arcata along Jacoby Creek Comment
  HSC59195  Oxalis oregana Terry Roth 1979-5-20 59 Humboldt Along old logging road that follows Jolly Giant Creek. 79 Comment
  HSC75416  Oxalis oregana J. O. Sawyer, M. A. Erickson 1979-7-15 3415 Humboldt Adroni Research Natural Area, slopes along Aikins Creek 457 Comment
  RSA20792  Oxalis trilliifolia Carl B. Wolf 1937-8-13 9257 Humboldt North Coast Range, 11 miles E of Hoopa Valley on new road towards Trinity Summit. 1524 Comment
  UC34654  Packera bolanderi var. bolanderi Chesnut and Drew 1888-7-10 Humboldt Jarnigan's Comment
  POM126096  Panicum acuminatum var. acuminatum Joseph P. Tracy 1906-7-1 2517 Humboldt At Eureka 0 Comment
  HSC12343  Panicum capillare Steve Dorei 1970-10-31 126 Humboldt Scotia bluff area, N side of railroad tracks. Comment
  UC526836  Panicum miliaceum subsp. miliaceum Joseph P. Tracy 1931-9-7 9639 Humboldt Trinity River Valley at Willow Creek; Northern Coast Ranges, Trinity River Valley, Willow Creek 152 Comment
  CAS-BOT-BC253924  Parapholis incurva S. K. Harris; J. P. Tracy 1936-6-6 3218 Humboldt Near railroad station, Eureka Comment
  CDA15537  Parentucellia viscosa G. F. Hrusa 1998-7-5 14705 Humboldt Klamath Ranges; Hwy 299, N side at summit of pass W of Willow Creek. Comment
  HSC27047  Parentucellia viscosa Brad Klipfel 1973-8-25 290 Humboldt Near Lazy L Ranch, Fickle Hill Rd. Comment
  RSA181631  Parentucellia viscosa Doris K. Niles 1950-6-1 7 Humboldt Island in Eel River, Niles field. Comment
  UC1145169  Paspalum distichum Joseph P. Tracy 1939-10-6 16505 Humboldt w of Sunset Cemetary Eureka (Eureka) 6 Comment
  HSC20927  Pedicularis densiflora Francis Winter 1960-4-24 Humboldt 3.5 mi. SW of Hoopa Indian Reservation, Bair Rd. 610 Comment
  JEPS27746  Pedicularis groenlandica Joseph P. Tracy 1925-7-5 7180 Humboldt near High Prairie; Northern Coast Ranges, Bald Mountain 1066 Comment
  HSC99555  Pedicularis racemosa K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-8-10 220 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  RSA20777  Pedicularis racemosa Carl B. Wolf 1937-8-13 9241 Humboldt North Coast Range, 8 mi E of Hoopa Valley on New Road towards Trinity summit. 1220 Comment
  HSC50938  Pedicularis semibarbata G. L. Clifton, Walter Overton 1979-6-3 3760 Humboldt Near Pine Mtn., close to the town of Forest Glen 1495 Comment
  CAS-BOT-BC69340  Pellaea brachyptera Joseph P. Tracy 1937-7-24 15516 Humboldt Trinity Summit, Devil's Hole 1676 Comment
  HSC99467  Penstemon anguineus K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-14 121 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  RSA46785  Penstemon anguineus Doris Kildale Gillespie 1937-8-12 15261 Humboldt South Fork Mountain. Comment
  UC577417  Penstemon anguineus Joseph P. Tracy 1932-7-12 10454 Humboldt near Corral Prairie (Fir woods); Trinity Summit, Corral Prairie 1584 Comment
  UCR133559  Penstemon anguineus Milo S. Baker 1947-8-10 11911 Humboldt near end of Forest Rd from Hoopa towards Trinity Summit 1372 Comment
  HSC40011  Penstemon anguineus Thomas W. Nelson, Jane P. Nelson 1976-7-1 2907 Humboldt E side of Red Lassic, beside FS Rd. 1S07 1677 Comment
  HSC98766  Penstemon anguineus Cara Witte 2008-6-27 762 Humboldt Along National Forest 1 near Kinsey Ridge. 1/2 mile north of cattle guard. 1397 Comment
  RSA21319  Penstemon azureus subsp. azureus Carl B. Wolf 1937-8-13 9220 Humboldt North coast range, 8 mi. east of Hoopa Valley on new road towards Trinity summit. 1220 Comment
  RSA309621  Penstemon deustus Walter Wisura 1983-9-3 3931 Humboldt About 6 mi N of Weitchpec, along Klamath River. Comment
  HSC41280  Penstemon laetus subsp. sagittatus Brad Klipfel 1974-6-25 441 Humboldt Horse Mtn., along ridge running to the E of Horse Mtn. proper Comment
  HSC96936  Penstemon laetus subsp. sagittatus Whitney Meier, Elizabeth Kimbrough 2007-6-11 5 Humboldt Cold Springs Camp, 14.1 mi. S of Hwy. 299 on FS Rd. NF1 Comment
  HSC56119  Penstemon newberryi subsp. berryi Gilbert Muth 1979-8-1 11894 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1877 Comment
  HSC82124  Penstemon newberryi subsp. berryi Thomas W. Nelson 1979-7-11 4996 Humboldt N Trinity Mtn. and ridge to E. 1829 Comment
  UC41737  Penstemon newberryi var. berryi Chestnut and Drew 1888-7-21 Humboldt S. Fork Mountain Comment
  HSC70388  Pentagramma triangularis Gail Newton 1980-6-7 143 Humboldt Near Brush Mtn. 1128 Comment
  HSC102578  Perideridia gairdneri subsp. borealis M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-29 1565 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1579 Comment
  HSC35701  Perideridia kelloggii Thomas W. Nelson, B. Reinhardt 1975-7-30 2116 Humboldt E of Pilot Rock Comment
  HSC102170  Perideridia oregana M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-3 1082 Humboldt Patterson Meadows 1555 Comment
  HSC17526  Persicaria maculosa John Warner Hosking 1968-10-10 Humboldt Clam Beach Comment
  RSA21605  Petasites palmatus C. B. Wolf 1937-9-14 9352 Humboldt North Coast Range, Lord Ellis Road, 7.6 miles east of Blue Lake. 213 Comment
  HSC13622  Phacelia bolanderi D. E. Anderson 1963-5-25 2471 Humboldt About 1 mi. W of Fernbridge along Rd. to Ferndale Comment
  JEPS1446  Phacelia bolanderi Milo S. Baker 1923-7-10 1 Humboldt hwy s Garberville Comment
  HSC98877  Phacelia egena Cara Witte 2007-5-29 137 Humboldt Along National Forest 1 near Kinsey Ridge. 1/2 mile south of cattle guard. 1369 Comment
  CDA40414  Phacelia heterophylla subsp. virgata T. C. Fuller 1958-6-17 s.n. Humboldt Wildcat Ridge near Bunker Hill. 0 Comment
  JEPS1158  Phacelia mutabilis Joseph P. Tracy 1932-7-12 10432 Humboldt Corral Prairie Trinity Summit 1584 Comment
  RSA21078  Phacelia mutabilis Carl B. Wolf 1937-8-13 9238 Humboldt North coast range, 8 mi. east of Hoopa Valley on new road towards Trinity summit. 1220 Comment
  HSC57416  Phacelia procera G. L. Clifton, Griswold 1979-7-26 10178 Humboldt Near Salmon Mtn., close to the town of Forks of Salmon 2058 Comment
  UCD88168  Phalaris aquatica J. W. Logan 1926-6-2 5 Humboldt Ferndale. Rusk Ranch. Comment
  HSC10560  Phalaris californica J. P. Tracy 1925-6-7 7085 Humboldt Lord-Ellis Rd on Bald Mtn. Comment
  UC1103768  Phalaris californica Joseph P. Tracy 1927-8-28 8359 Humboldt near Boynton Prairie; North Coast Ranges, near Boynton Prairie 609 Comment
  HSC49959  Philadelphus californicus Maralyn O'Meara 1974-7-17 555 Humboldt Along E border Comment
  CAS-BOT-BC76566  Philadelphus lewisii Doris K. Kildale 1927-7-2 3661 Humboldt Redmond Creek at Berry's 289 Comment
  CAS-BOT-BC76569  Philadelphus lewisii L. R. Abrams 1916-7-11 6006 Humboldt Between Blocksberg and Bridgeville Comment
  HSC98094  Philadelphus lewisii Cara Witte 2007-7-11 484 Humboldt Cold Spring. 1/2 mile south of Titlow Hill. 1396 Comment
  UC1127362  Philadelphus lewisii R. Stahelin 1933-7-18 Humboldt Korbel near Riverside Plant. Korbel, 7.5 Q. Comment
  UC615281  Philadelphus lewisii Beryl O. Schreiber 1932-7-12 372 Humboldt near Klamath Comment
  SEINET200857  Philadelphus lewisii subsp. gordonianus Joseph P. Tracy 1937-6-20 15355 Humboldt Bear River, ten miles upstream from the mouth. 152 Comment
Read comments
Oct 8 2018
  HSC65479  Phlox adsurgens M. A. Baker 1980-6-7 1806 Humboldt Near Brush Mtn. 1128 Comment
  UC1198555  Phlox adsurgens Joseph P. Tracy 1929-7-4 8635 Humboldt French Camp Ridge 1066 Comment
  HSC38394  Phlox adsurgens J. D. Ackerman 1975-6-18 473 Humboldt Big Hill Rd. E of Hoopa and 10.9 mi. E of Hwy. 96 Comment
  UC1191120  Phlox douglasii subsp. rigida Joseph P. Tracy 1933-7-25 12828 Humboldt Horse Mountain 1432 Comment
  UC673118  Phlox gracilis Joseph P. Tracy 1940-5-17 16550 Humboldt Larrabee Valley 731 Comment
  UC672849  Phoradendron juniperinum Joseph P. Tracy 1932-7-16 16048 Humboldt Trinity Summit, Corral Prairie 1584 Comment
  JEPS42597  Phoradendron villosum Lincoln Constance 1934-5-29 737 Humboldt Bull Creek Region, S. Fork Eel R., Upper Look Prairie 365 Comment
  HSC41478  Phyla nodiflora Ed Cope, R. Runyon 1977-7-20 132 Humboldt 15th and H St., Arcata. Comment
  HSC31521  Picea sitchensis Steve Selva, Roger Jensen 1974-8-28 94 Humboldt Behind Humboldt State University, Arcata. Comment
  HSC40943  Picea sitchensis Linda M. Barker 1976-4-13 1376 Humboldt 3 mi. W of Arcata Comment
  JEPS46733  Picea sitchensis Goddard Humboldt Comment
  SBBG24465  Picea sitchensis J. W. Howe -Mar-1938 Humboldt [label without specific locality] Comment
  CAS-BOT-BC78378  Pinus contorta Alice Eastwood 1923-8-14 s.n. Humboldt Samoa Comment
  UCD134418  Pinus contorta var. contorta Linda M. Barker 1976-7-5 1641 Humboldt Lanphere-Christensen Dunes, 3 miles west of Arcata. Comment
  OBI33911  Pinus jeffreyi David J. Keil 1983-7-2 17315 Humboldt Ca. 4 mi SE of SR 299 along Titlow HIll rd below Horse Mtn Summit Rd Comment
  RSA275331  Pinus monticola Robert M. Specht 1977-11-20 1190 Humboldt Near Hwy. 101, flats along Gerogia Pacific s A-line. 122 Comment
  HSC42411  Pinus muricata Robert M. Specht 1977-11-20 1190 Humboldt Near Hwy. 101, on flats along Georgia Pacific's A-line rd. , Bulk Collection # 117 122 Comment
  CAS-BOT-BC79025  Pinus ponderosa Doris K. Kildale 1927-2-20 2900 Humboldt [Lassecks] Lassics Peaks Trail, Cold Spring, Goat Camp 914 Comment
  CAS-BOT-BC79027  Pinus ponderosa Doris K. Kildale 1928-7-1 5314 Humboldt Klamath River at Orleans Comment
  UC55659  Pinus ponderosa P. E. Goddard 1901-7-12 66 Humboldt Hupa Comment
  HSC99047  Pinus ponderosa var. ponderosa Cara Witte 2008-6-13 725 Humboldt Forest Service Road 4N32. 1 mile south of intersection with Forest Service Road 4N32E. 1455 Comment
  CAS-BOT-BC137277  Piperia elegans Mrs. H. C. Cantelow 1940-7-6 4062 Humboldt Field redacted by CAS, contact the data manager for more information Comment
  RSA273298  Piperia transversa J. D. Ackerman 1974-8-13 404 Humboldt Ca. 2 miles north of Manila, between sand dunes and Mad River Slough Comment
  UC1196426  Piperia transversa Edith and Ethel Tracy 1900-7-31 909 Humboldt opposite Eureka; Samoa, Ocean Beach Comment
  HSC98975  Piperia unalascensis Cara Witte 2008-7-7 834 Humboldt Horse Mountain Botanical Area. 1/4 mile east of intersection National Forest 1, Forest Service Roads 6N36 and 6N38. 1415 Comment
  UC1196413  Piperia unalascensis Joseph P. Tracy 1926-5-2 7416 Humboldt near South Fork Trinity River; Northern Coast Ranges, Trinity River Valley 182 Comment
  UC552841  Plagiobothrys bracteatus Joseph P. Tracy 1935-5-30 13916 Humboldt Willow Creek Trinity River Valley (bed of dried-up pond) 152 Comment
  UC1239622  Plagiobothrys nothofulvus Joseph P. Tracy 1937-5-16 15284 Humboldt summit ridge (Harris); Harris 914 Comment
  UC184998  Plagiobothrys reticulatus Joseph P. Tracy 1904-7-4 2111 Humboldt at Eureka; Northern Coast Region, Eureka 0 Comment
  JEPS60999  Plagiobothrys reticulatus var. reticulatus Joseph P. Tracy 1936-6-28 15009 Humboldt near Murphy Meadows; Bald Mt. 914 Comment
  JEPS60992  Plagiobothrys reticulatus var. rossianorum Joseph P. Tracy 1932-6-26 10274 Humboldt Fort Baker Ranch North Coast Ranges 762 Comment
  UC1222215  Plagiobothrys scouleri Joseph P. Tracy 1949-6-20 18322 Humboldt at Cameron Hill on the Kneeland Road Cameron Hill Comment
  UC1239607  Plagiobothrys stipitatus Gertrude Robinson 1940-4-28 Humboldt Bridgeville 198 Comment
  RSA178585  Plantago erecta Joseph P. Tracy 1950-6-8 18730 Humboldt Bear River Ridge. Comment
  OBI11640  Plantago lanceolata Joseph P. Tracy 1947-8-10 17882 Humboldt Eureka Comment
  RSA247394  Plantago lanceolata Gary D. Wallace 1966-9-12 706 Humboldt East of Arcata near Willow Creek along Hwy 299. Comment
  HSC16852  Plantago major Paul Shields Jun 1955 Humboldt 1 mi. N of Weott Comment
  SEINET14412274  Plantago major Joseph P. Tracy 1942-1 17300 Humboldt Fickle Hill, 6 miles southeast of Arcata 610 Comment
  BLMAR303  Plantago maritima Jennifer Anthony-Wheeler 2002-7-1 303 Humboldt South Spit 6 Comment
  RSA54131  Plantago patagonica H. M. Pollard 1945-8-25 s.n. Humboldt Between Orleans and Camp Creek, Klamath River Canyon. Comment
  UC585992  Plantago subnuda Joseph P. Tracy 1927-6-26 8220 Humboldt Stone Lagoon 9 Comment
  HSC40132  Platanthera dilatata var. leucostachys Thomas W. Nelson, James Nelson 1976-7-28 3083 Humboldt Between Alder Springs and road to Pine Mtn. 1524 Comment
  HSC99474  Platanthera leucostachys K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-14 128 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  CAS-BOT-BC91642  Platystemon californicus W. R. Dudley 1899-6-1 s.n. Humboldt Eureka Peninsula. Comment
  HSC33745  Platystemon californicus A. M. Montalvo 1975-5-24 269 Humboldt Samoa Dunes, off Samoa Blvd. across from the boat landing Comment
  HSC59485  Platystemon californicus M. A. Ericksen 1979-4-29 240 Humboldt 0.4 mi. N of Coast Guard Station, Samoa Peninsula. Comment
  UC146105  Platystemon californicus Joseph P. Tracy 1904-4-24 2020 Humboldt sand dunes of Ocean Beach Ocean Beach (Humboldt Bay); Northern Coast Region, , Ocean Beach Comment
  SFV18500  Platystemon californicus A. M. Deshais 2002-4-12 36 Humboldt Manila Dunes. Comment
  UC602529  Plectritis brachystemon Joseph P. Tracy 1932-5-22 10117 Humboldt between Miranda and Redway (North Coast Ranges, South Fork of Eel River); North Coast Ranges, South Fork Eel River 91 Comment
  UC175689  Plectritis brachystemon Joseph P. Tracy 1912-6-16 3703 Humboldt near Hookton (Region about Humboldt Bay, Northern Coast Region); Northern Coast Region 0 Comment
  UC1239578  Plectritis congesta Harley P. Chandler May, 1901 1149 Humboldt North Coast Ranges, Humboldt Bay Humboldt Bay; North Coast Ranges, Humboldt Bay 3 Comment
  HSC90190  Pleuropogon refractus Larry Levine 1991-4-27 4911 Humboldt Maple Creek, L.W. Shatz Tree Farm Comment
  RSA10057  Pleuropogon refractus Joseph P. Tracy 1932-7-14 10539 Humboldt Corral Prairie 1524 Comment
Read comments
Aug 15 2009
  UC1152046  Pleuropogon refractus Joseph P. Tracy 1951-6-26 19560 Humboldt halfway between Snow Camp and Twin Lakes (at Charley Preston's old gate near the road) Comment
  SEINET200752  Pneumonanthe oregana J. P. Tracy 1904-8-7 2140 Humboldt Immediate vicinity of Eureka. 0 Comment
  HSC26347  Poa annua T. O. Osborne 1970-4-5 78 Humboldt Flat-iron rock, 3/4 mi. NW of Trinidad Lighthouse. Comment
  CAS-BOT-BC254713  Poa bolanderi Joseph P. Tracy 1932-7-12 10464 Humboldt Klamath Mountains. Head of Brett Hole 1828 Comment
  HSC73731  Poa bolanderi M. A. Baker 1980-7-19 3009 Humboldt Near Bret Hole. 1814 Comment
  SACT001837  Poa confinis D. Shillingbury 1963-5-11 Humboldt Coastal Strand. Sea level. Comment
  SEINET10822289  Poa confinis Joseph P. Tracy 1905-4-30 Tracy 278 Humboldt Sand dunes of Ocean Beach. Comment
  HSC10706  Poa douglasii R. E. Hafenfeld 1965-5-9 59 Humboldt 1/2 mi. S Ossagon Creek, near Gold Bluff Beach Rd. Comment
  UC1132658  Poa douglasii H. S. Yates 1936-6-18 5726 Humboldt near mouth Little River; Eureka Quadrangle Comment
  UC34064  Poa douglasii J. P. Tracy 1900-7-4 886 Humboldt Ocean Beach at Samoa (opposite Eureka) Comment
  UC1103795  Poa howellii Joseph P. Tracy 1918-7-5 5035 Humboldt White Thorn Valley; Northern Coast Ranges 304 Comment
  UCD91136  Poa howellii A. H. Murphy 1951-2-27 3 Humboldt along the Eel River, near Fort Seward Hotel. Comment
  UC1103184  Poa kelloggii J. P. Tracy 1901-6-16 1151 Humboldt immediate vicinity Eureka 0 Comment
  HSC40330  Poa pratensis Thomas W. Nelson, Jane P. Nelson 1976-6-22 2854 Humboldt Bog along road to Goat Hill. 1646 Comment
  UCD91936  Poa pratensis A. Murphy 1951-4-19 s.n. Humboldt Tooby and Prior Ranch. Blocksburg. 457 Comment
  SEINET11680993  Poa secunda J. P. Tracy 1951-1 19543 Humboldt 2 mi W of Snow Camp, at Beck's Place, Hydesville 1219 Comment
  SEINET7854859  Poa secunda subsp. juncifolia J. B. Davy 1899-1 5658 Humboldt Hoopa Summit. Comment
  CAS-BOT-BC235982  Poa secunda subsp. secunda Joseph P. Tracy 1932-7-17 10693 Humboldt Klamath Mountains. Head of Devil's Hole 1828 Comment
  UC1103167  Poa secunda subsp. secunda Joseph P. Tracy 1927-6-12 8143 Humboldt Horse Mt; Northern Coast Ranges 1524 Comment
  SEINET200571 Image available Poaceae Joseph P. Tracy 1926-6-12 7587 Humboldt Near Orick ,at Davison's Ranch . shady moist ground, Introduced. Comment
  CAS-BOT-BC232886  Polemonium carneum Carl B. Wolf 1937-6-17 8881 Humboldt Big Lagoon, S side at W of Redwood Highway 6 Comment
  RSA20841  Polemonium carneum C. B. Wolf 1937-6-17 8881 Humboldt Big Lagoon, south side at west of Redwood Highway 6 Comment
  UC162581  Polemonium carneum Ethel Tracy 1911-6-18 Humboldt near Big Lagoon; Northern Coast Ranges, near Big Lagoon 30 Comment
  POM209000  Polygala californica Lincoln Constance 1934-5-23 608 Humboldt Look Prairie, Bull Creek Watershed, Humboldt Redwood Park 366 Comment
  HSC72626  Polygala cornuta J. P. Smith, J. O. Sawyer 1977-7-1 9226 Humboldt Six Rivers National Forest, Bluff Creek Campground. 76 Comment
  CAS-BOT-BC167574  Polygala cornuta var. cornuta Joseph P. Tracy 1936-8-30 15182 Humboldt Trinity River Valley, at Willow Creek 152 Comment
  HSC31424  Polygonum aviculare R. F. Thorne, P. Everett 1965-8-8 35244 Humboldt N edge of Eureka, E of Hwy 101 5 Comment
  HSC54501  Polygonum douglasii G. L. Clifton, Griswold 1979-7-26 9363 Humboldt Near Salmon Mtn., close to the town of Forks of Salmon 1935 Comment
  CAS-BOT-BC414466  Polygonum douglasii Doris K. Kildale 1925-8-17 1231 Humboldt Trinity Summit - Waterdog Lake 1828 Comment
  SEINET3405782 Image available Polygonum douglasii Joseph P. Tracy 1947-8-24 17922 Humboldt Trinity Summit; Gravelly slopes on Box Camp trail Comment
  HSC45472  Polygonum minimum Thomas W. Nelson, Jane P. Nelson 1978-7-2 4392 Humboldt SE of E peak of the Mount Lassic group 1616 Comment
  RSA178533  Polygonum minimum Joseph P. Tracy 1950-8-8 19281 Humboldt On trail betw Box Camp and Croghon Hole. 1677 Comment
  HSC17513  Polygonum paronychia J. W. Johnson 1962-2-15 1152 Humboldt Samoa Peninsula: Christenson Farm, near Dune 3 N in the Hollow 3 S Comment
  POM129566  Polygonum paronychia Grout, S. Grout 1910-09 s.n. Humboldt Eureka. Comment
  RSA667220  Polygonum paronychia George K. Helmkamp, E. A. Helmkamp 2001-7-8 7018 Humboldt North coast: Samoa Peninsula, 2.6 miles S of CA-255 bridge across Humboldt Bay. 15 Comment
  UC672944  Polygonum paronychia Joseph P. Tracy 1927-1-15 7836 Humboldt sand dunes near Samoa; Humboldt Bay 6 Comment
  UCSB15544  Polygonum paronychia Breedlove, Dennis 1962-6-7 Humboldt 1.5 miles south of Samoa on peninsula on western side of Humboldt Bay. Comment
  UC146160  Polygonum parryi Joseph P. Tracy 1908-6 2722 Humboldt opposite Buck Mountain; Northern Coast Ranges, valley of Van Duzen River 304 Comment
  HSC48864  Polygonum polygaloides subsp. kelloggii Brad Klipfel 1973-6-10 57 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  CDA2923  Polygonum polystachyum Thomas W. Nelson, M. Alcasas 1978-10-1 4555 Humboldt Highway 101 right-of-way just north of Humboldt State University exit. 0 Comment
  CDA2913  Polygonum sachalinense T. C. Fuller 1960-8-25 4973 Humboldt Northwestern; Outer North Coast Ranges region; West of Highway 101, 0.25 mile north of Humboldt Hill Road, Eureka. 0 Comment
  CHSC37525  Polypodium glycyrrhiza M. S. Taylor 1982-10-24 5184 Humboldt Samoa, under bridge, ca. 1 mi nw of Eureka. 0 Comment
  HSC1115  Polypodium scouleri C. O. Baker 1962-3-22 5 Humboldt 2 mi. S of Trinidad along old Hwy. 101 91 Comment
  HSC77900  Polypodium scouleri L. P. Janeway, Paul Wilson 1984-5-7 763 Humboldt N Spit of Humboldt Bay, on BLM lands near the Coast Guard Station 3 Comment
  JEPS93137  Polypodium scouleri M. Wetherwax 1992-5-20 2434 Humboldt coastal bluff s side of Wedding Rock; Patrick's Point State Park 30 Comment
  HSC38921  Polypogon monspeliensis Linda M. Barker 1976-6-22 1625 Humboldt 3 mi. W of Arcata Comment
  UC1132904  Polypogon monspeliensis H. S. Yates 1936-6-16 5679 Humboldt 1 mi ne Samoa; Eureka Quad. Comment
  UC183446  Polypogon monspeliensis J. P. Tracy 1912-10-20 3996 Humboldt near Loleta 30 Comment
  SEINET4889908  Polypogon monspeliensis H. Ch 1901-1 1431 Humboldt North Coast Ranges, Klamath River 335 Comment
  RSA152378  Polypogon viridis Joseph P. Tracy 1943-8-29 17445 Humboldt [Unspecified] Comment
  HSC72980  Polystichum imbricans Gail Newton 1980-7-15 1578 Humboldt Near Sims Mtn. 1311 Comment
  CAS-BOT-BC76664  Polystichum munitum Doris K. Kildale 1926-7-22 2414 Humboldt Metropolitan, woods near Canyon Park. Comment
  HSC12977  Polystichum munitum M. Athey, D. La Conte 1970-11-28 2 Humboldt HSU campus Comment
  HSC76298  Polystichum munitum Alerie Gizinski 1981-8-31 341 Humboldt Near Whiting Spring 1231 Comment
  UC906749  Polystichum munitum Joseph P. Tracy 1947-7-9 17843 Humboldt Horse Mt. 1432 Comment
  HSC79147  Polystichum munitum C. J. Thomas 1984-9-25 119 Humboldt In Redwood forest immediately behind HSU fieldhouse 79 Comment
  UC1440061  Polystichum munitum Danin & H. G. Baker 1960-8-14 626 Humboldt n slope Eel Rock Rd. Eel Rock Rd. Comment
  SBBG21983  Populus balsamifera subsp. trichocarpa R. F. Thorne 1957-9-2 18990 Humboldt branch of Eel River at Burlington State Park, just S of Weott Comment
  CAS-BOT-BC102905  Populus trichocarpa Doris K. Kildale 1926-3-24 1618 Humboldt Lindsey Creek bridge - Lower Mad River 26 Comment
  CAS-BOT-BC102907  Populus trichocarpa Doris K. Kildale 1926-8-8 2471 Humboldt Dyerville Bridge 45 Comment
  RSA171967  Populus trichocarpa Robert F. Thorne 1957-9-2 18990 Humboldt Eel River. Burlington State Park, just S of Weott. Comment
  UC215463  Populus trichocarpa Huron H. Smith 1911-7-7 3938 Humboldt Bull Creek Comment
  UC249539  Populus trichocarpa Joseph P. Tracy 1922-10-8 6125 Humboldt Mad River at Blue Lake; Northern Coast Ranges, Mad River at Blue Lake 30 Comment
  UC176375  Potamogeton natans Joseph P. Tracy 1913-9-9 4406 Humboldt near mouth of Little River; Northern Coast Ranges 3 Comment
  HSC62826  Potamogeton nodosus J. M. DiTomaso 1979-4-22 907 Humboldt Crannell Rd. exit between Westhaven and McKinleyville Comment
  CAS-BOT-BC143075  Potentilla anserina subsp. pacifica Ashley C. Browne 1936-6-11 s.n. Humboldt Patrick's Point State Park Comment
  CAS-BOT-BC143077  Potentilla anserina subsp. pacifica L. R. Abrams 1916-7-18 6130 Humboldt Arcata to Trinidad Comment
  HSC95736  Potentilla anserina subsp. pacifica Steven Lee 2004-4-10 11 Humboldt Drive from intersection of V St. and Samoa Blvd. in Arcata 1/8 mi. towards parking area to S 200 Comment
  UC585622  Potentilla anserina subsp. pacifica Joseph P. Tracy 1934-7-30 13509 Humboldt along coast in front South End of Stone Lagoon (Dry Lagoon); , in front of South End Stone Lagoon 3 Comment
  CAS-BOT-BC143073  Potentilla anserina subsp. pacifica Henry M. Pollard 1947-8-26 s.n. Humboldt Klamath Riverbed, Ferrian's Ranch (nr. Orleans) Comment
  HSC102525  Potentilla drummondii M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-28 1512 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1106 Comment
  RSA46469  Potentilla gracilis Doris K. Kildale 1927-7-10 3721 Humboldt Gans Prairie, Bald Hills. Comment
  HSC15464  Prosartes hookeri D. E. Anderson 1965-5-15 3691 Humboldt About 7 mi. N of Hoopa on Bloody Camp Prairie Rd. Comment
  HSC15477  Prosartes smithii H. E. Parks 1935-3 5582 Humboldt Trinidad Comment
  SEINET12050891  Prosartes smithii F. H. Utech 1977-1 77 -370 Humboldt ca 4.5 mi S of Del Norte County line on US 101 enroute to Crescent City Comment
  SBBG71579  Prunella vulgaris R. Hartwell 1938-8-6 Humboldt S of Eureka Comment
  HSC81567  Prunella vulgaris subsp. lanceolata Thomas W. Nelson, Jane P. Nelson 1980-7-13 6062 Humboldt Along the road from Dinsmore to Anderson Ford-McKeown Ranch Rd. 762 Comment
  HSC96503  Prunella vulgaris subsp. vulgaris Gordon Leppig 1998-8-23 1073 Humboldt Big Lagoon County Park, Big Lagoon Bog 3 Comment
  RSA134596  Prunella vulgaris var. lanceolata Percy C. Everett, E. K. Balls 1959-10-25 23961 Humboldt 14 miles W of Willow Creek on Hwy 299 to Arcata. 503 Comment
  HSC39624  Prunus emarginata Thomas W. Nelson, Jane P. Nelson 1976-6-15 2728 Humboldt Along old trail from lookout to Blocksburg 1585 Comment
  CAS-BOT-BC154740  Prunus virginiana var. demissa Doris K. Kildale 1926-5-16 1841 Humboldt Horse Mountain 792 Comment
  HSC67443  Pseudognaphalium stramineum J. P. Smith 1971-10-6 4936 Humboldt End of Murray Rd. in McKinleyville. Comment
  HSC70805  Pseudotsuga menziesii var. menziesii Gail Newton 1980-7-24 1781 Humboldt Near Somes Mtn. 1615 Comment
  HSC76289  Pseudotsuga menziesii var. menziesii Teresa Prendusi 1981-7-9 248 Humboldt Near Slate Creek Butte 1122 Comment
  OBI36540  Pseudotsuga menziesii var. menziesii David J. Keil 1983-7-2 17338 Humboldt Horse Mtn Summit SW of Willow Crk Comment
  UC1198273  Pseudotsuga menziesii var. menziesii Joseph P. Tracy 1943-3-14 17407 Humboldt 5 mi e of Carlotta (open flat by old Strong's District School House) 45 Comment
  UC502919  Pseudotsuga menziesii var. menziesii Joseph P. Tracy 1932-3-19 9789 Humboldt Blus Slide on Van Duzen River Northern Coast Ranges, Van Duzen River 91 Comment
  UCD136153  Pteridium aquilinum var. pubescens Linda M. Barker 1976-5-13 1480 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  UCD136174  Pteridium aquilinum var. pubescens K. Esau 1934-5-8 s.n. Humboldt Above Fort Seward. 457 Comment
  HSC90883  Puccinellia nutkaensis Leonel Arguello 1989-6-24 Humboldt Lanphere-Christensen Dunes Preserve, 3 mi. W of Arcata; 30 yards from Salt Marsh Trail. Comment
  RSA152293  Puccinellia nutkaensis Joseph P. Tracy 1950-6-17 18834 Humboldt At Eureka. Comment
  JEPS58845  Pyrola aphylla W. L. Jepson 1902-7-13 2023 Humboldt Willow Creek to Hupa Comment
  HSC45425  Pyrola aphylla Thomas W. Nelson, Jane Nelson 1977-7-1 3556 Humboldt N side of ridge between Bear Creek & Blanket Creek 1463 Comment
  HSC99085  Pyrola dentata Cara Witte 2007-6-26 355 Humboldt Horse Mountain Botanical Area. Forest Service Road 6N36A. 1348 Comment
  UC56302  Pyrola picta Joseph Burtt Davy and Walter C. Blasdale 1899-5 5420 Humboldt Hubbard's Station Comment
  NY42917  Pyrus malus J. B. Walker 1995-4-26 1386 Humboldt Six Rivers National Forest, Hwy 36, 2km W of Cobbs 800 Comment
  HSC40045  Quercus chrysolepis Thomas W. Nelson, Jane P. Nelson 1976-7-1 2899 Humboldt Ridge N of Bear Creek 1494 Comment
  UC1222292  Quercus chrysolepis Joseph P. Tracy 1950-8-4 19256 Humboldt at head of Canoe Creek, summit of ridge ne of the lookout station, Grasshopper Peak, in Bull Creek State Park Bull Creek State Park, Grasshopper Peak, Canoe Creek Comment
  UC478893  Quercus chrysolepis Marcus E. Jones, A. M. 1931-7-16 28845 Humboldt near Trinity River (Burnt Ranch) Comment
  CAS-BOT-BC94315  Quercus garryana Doris K. Kildale 1927-6-25 3580 Humboldt Ettersburg Comment
  CAS-BOT-BC94317  Quercus garryana H. E. McMinn 1922-8-5 352 Humboldt Along Van Duzen River Comment
  HSC8236  Quercus garryana D. E. Anderson 1961-9-3 1778 Humboldt Comment
  UC54712  Quercus garryana P. E. Goddard 1901-7-12 68 Humboldt Hupa Comment
  HSC102091  Quercus garryana var. breweri M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 994 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  OBI36669  Quercus garryana var. garryana David J. Keil 1983-7-2 17343 Humboldt 21 mi S of SR 299 along Titlow HIll rd, SW of Willow Crk Comment
  CAS-BOT-BC105160  Quercus kelloggii H. E. McMinn 1922-8-5 330 Humboldt Mad River Comment
  UC502988  Quercus kelloggii Joseph P. Tracy 1928-9-30 8510 Humboldt near Bridgeville; Northern Coast Ranges 304 Comment
  UCD46693  Quercus kelloggii R. N. Raynor 1935-4-15 s.n. Humboldt Fort Seward. Comment
  UCD46719  Quercus kelloggii Lincoln Constance 1934-5-29 738 Humboldt Upper Look Prairie, south fork Eel River, Humboldt County, California. 365 Comment
  OBI14233  Quercus sadleriana Carl B. Wolf 1937-8-13 9261 Humboldt North Coast Range, 12 mi E of Hoopa Valley on New road towards Trinity summit 1676 Comment
  UCD47218  Quercus sadleriana D. Sanchez-Mata 1997-9-20 s.n. Humboldt Hoopa. Big Hill Lookout Road. Successional shrubland plant communitites on logged Douglas fir forests. 1230 Comment
  HSC76363  Quercus vacciniifolia Denis Kearns 1981-6-24 18 Humboldt Near Cedar Camp 1219 Comment
  UC519303  Quercus vacciniifolia Joseph P. Tracy 1933-8-30 13009 Humboldt Horse Mountain Northern Coast Ranges 1524 Comment
  UC1196510  Quercus wislizeni Joseph P. Tracy 1938-6-9 15883 Humboldt North Dobbyn Creek Dobbyn Creek 152 Comment
  CAS-BOT-BC186672  Ranunculus Mrs. H. C. Cantelow 1935-5-31 828 Humboldt 8 mi. nor. of Orick Comment
  UC1103005  Ranunculus aquatilis var. capillaceus Joseph P. Tracy 1936-6-17 14951 Humboldt Buck Mountain; lower foothills of nw slope 762 Comment
  UC594250  Ranunculus aquatilis var. hispidulus C. C. and S. K. Harris 1936-6-12 3363 Humboldt near Bridgeville; Chalk Mountain Comment
  HSC45584  Ranunculus californicus Diane L. Reed 1978-4-29 40 Humboldt Trinidad Head Comment
  HSC26334  Ranunculus californicus var. californicus Thomas W. Nelson 1971-4-12 376 Humboldt S spit of Humboldt Bay. Comment
  UC184237  Ranunculus flammula Joseph P. Tracy 1912-7-21 3786 Humboldt Alton Northern Coast Region 30 Comment
  HSC26676  Ranunculus muricatus Thomas W. Nelson 1971-5-7 430 Humboldt Dunes at Lamphere property Comment
  UC1196220  Ranunculus occidentalis Joseph P. Tracy 1908-6 2688 1/2 Humboldt opposite Buck Mountain; Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  UC1196232  Ranunculus occidentalis Joseph P. Tracy 1934-6-27 13263 Humboldt Horse Mountain Northern Coast Ranges 1432 Comment
  HSC18166  Ranunculus occidentalis var. occidentalis D. E. Anderson 1962-5-1 2190 Humboldt 1 mi. E of junction of Redwood Creek road and road to Hoopa Comment
  UC249653  Ranunculus orthorhynchus var. orthorhynchus Joseph P. Tracy 1922-5-21 6050 Humboldt Fieldbrook Northern Coast Ranges 60 Comment
  POM172654  Ranunculus orthorhynchus var. platyphyllus V. King Chesnut, E. R. Drew 1888-7-20 s.n. Humboldt Pilot Creek Comment
  POM87678  Ranunculus repens L. R. Abrams, Rimo Bacigalupi 1922-6-25 8276 Humboldt Big Lagoon S of Quick Comment
  UC480960  Ranunculus repens Harley P. Chandler May, 1901 1111 Humboldt Humboldt Bay North Coast Ranges 30 Comment
  CDA3483  Ranunculus repens T. C. Fuller 1966-5-24 14709 Humboldt Arcata Bottoms, 0.75 mile west of Highway 101, 2 miles north of Arcata. 0 Comment
  HSC81964  Ranunculus uncinatus var. parviflorus Thomas W. Nelson, Jane P. Nelson 1979-7-3 4945 Humboldt Along road to Joe Losey property at junction of Kneeland and Maple Creek Rds. 610 Comment
  HSC18195  Ranunculus uncinatus var. parviflorus E. W. Styskel 1963-5-19 40 Humboldt 3 mi. SE of Korbel on Snow Camp Rd. 305 Comment
  HSC39793  Raphanus sativus Peter Sorensen 1976-6-8 Humboldt N Spit Comment
  POM244261  Rhamnus californica Carl B. Wolf 1931-8-31 2381 Humboldt Near mouth of S Fork of Trinity River, on road to sandy bar swimming hole. 244 Comment
  RSA7790  Rhamnus californica Carl B. Wolf 1927-8-30 1249 Humboldt 3 miles S of Thorn3 miles S of Tom's Place Comment
  UC61088  Rhamnus californica subsp. californica P. E. Goddard 1901-6-9 19 Humboldt Hupa Comment
  RSA171022  Rhamnus californica subsp. occidentalis Robert F. Thorne 1957-9-2 19008 Humboldt Eel River. Burlington State Park, just S of Weott. Comment
  RSA19036  Rhamnus californica subsp. occidentalis J. T. Howell 1937-7-31 13717 Humboldt 5 miles E of Berry Summit Comment
  RSA2937  Rhamnus californica subsp. occidentalis Carl B. Wolf 1931-8-30 2377 Humboldt On grade from Willow Creek to Blue Rahe, 9 miles above Willow Creek (Lord Ellis Road). 305 Comment
  CAS-BOT-BC55966  Rhamnus ilicifolia L. R. Abrams 1927-9-11 12141 Humboldt Fork Klamath and Shasta Rivers Comment
  UCR3519  Rhamnus purshiana David Whistler, H. M. Whistler 1964-8-1 640801- 4 Humboldt Coast Range, US Hwy 299, 6 mi east of Blue Lake Comment
  HSC7878  Rhododendron macrophyllum D. E. Anderson 1961-8-11 1732 Humboldt E of Humboldt State University campus 30 Comment
  SD51270  Rhododendron macrophyllum Darley F. Howe 1961-8-2 3120 Humboldt 7.7 miles east of Orick on Bald Mountain Road. 609 Comment
  UC1537162  Rhododendron macrophyllum Gordon H. True Jr. 1936-5-12 474 Humboldt near Kneeland Post Office 762 Comment
  UC1121079  Rhododendron occidentale H. L. Person 1930-6-20 Humboldt Bayside Road e of Arcata; Bayside Road Comment
  UC275301  Rhododendron occidentale R. M. Holman 1925-7-23 Humboldt Big Lagoon Comment
  CAS-BOT-BC200389  Rhododendron occidentale var. paludosum E. A. McGregor 1921-8-17 s.n. Humboldt On old grade, S.E. of Orick Comment
  RSA69331  Rhododendron occidentale var. paludosum F. W. Peirson 1923-7-11 3801 Humboldt 7 miles N of Arcata. Comment
  UC34924  Rhus trilobata Chestnut and Drew 1888-7-23 Humboldt Hyampom Comment
  UC535710  Ribes Eleanor Armstrong 1934-8-23 1153 Humboldt Richardson Grove 121 Comment
  HSC97217  Ribes bracteosum M. Mesler 2007-3-23 743 Humboldt Near Trinidad, trail from Mill Creek to Elk Head, along creek near beach. 23 Comment
  UC1046563  Ribes bracteosum R. Bacigalupi, L. Constance, J. P. Tracy, R. Moran, R. L. Rodriguez, and S. Carlquist 1951-6-14 3407 Humboldt near High Prairie (on long high ridge between Mad River and Redwood Creek); Bald Mountain 1066 Comment
  UC161565  Ribes bracteosum Joseph P. Tracy 1911-6-4 3216 Humboldt 5 mi from coast; Northern Coast Region, Little River 121 Comment
  UC303169  Ribes divaricatum var. pubiflorum Joseph P. Tracy 1925-3-15 6943 Humboldt Blue Slide Northern Coast Ranges, Van Duzen River 91 Comment
  UC667071  Ribes lacustre Joseph P. Tracy with Dr. F. W. Pennell 1940-7-7 16664 Humboldt Friday Ridge road Grouse Mt. 1371 Comment
  POM274396  Ribes laxiflorum H. E. Parks 1937-6-4 24004 Humboldt Along Prairie Creek at Valley Green Comment
  HSC69887  Ribes lobbii Thomas W. Nelson, Jane P. Nelson 1977-7-30 3665 Humboldt Beside State Rte. 36, 1 mi. E of Dinsmore. 732 Comment
  JEPS49222  Ribes menziesii Jos. P. Tracy 1909-2-14 2941 Humboldt Eureka 0 Comment
  UC154123  Ribes menziesii J. P. Tracy 1909-2-14 2942 Humboldt immediate vicinity Eureka 0 Comment
  UC667055  Ribes menziesii Joseph P. Tracy 1939-3-19 16204 Humboldt Blue Slide Van Duzen River 91 Comment
  RSA0021769  Ribes menziesii Patricia Wilder 1968-8-22 4425 Humboldt Coastal rain forest 7 miles south of Ferndale on Mattole Road; N of Cape Mendocino and Capetown. Bear River Ridge, Oil Creek to Pacific drainage area. 549 Comment
  HSC34966  Ribes roezlii Thomas W. Nelson 1975-5-24 1875 Humboldt McKeown Ranch, N of Dinsmore. Comment
  HSC70319  Ribes roezlii M. A. Baker 1980-6-7 1870 Humboldt Near Ammon Creek 732 Comment
  HSC71225  Ribes roezlii Thomas W. Nelson 1977-4-20 3333 Humboldt Along USFS Road 1N15 at summit 915 Comment
  BLMAR596  Ribes roezlii var. cruentum Jennifer Wheeler 2010-9-14 596 Humboldt Lacks Creek, along Pine Ridge Road 975 Comment
  HSC20349  Ribes roezlii var. cruentum Eugene Andreuccetti 1964-5-2 39 Humboldt 5 mi. from Willow Creek on Hwy. 299 Comment
  UC902114  Ribes roezlii var. cruentum Joseph P. Tracy 1944-7-3 17481 Humboldt Willow Creek Trinity River Valley 152 Comment
  UCR10838  Ribes roezlii var. cruentum Sue De Groot 1962-6-14 113 Humboldt North Coast Range, hillside west of Richardson Grove, Eel River drainage to Pacific 122 Comment
  HSC20335  Ribes sanguineum D. B. Bader 1963-2-17 31 Humboldt Second of the Clam Beach Lagoons W of Hwy. 101 Comment
  HSC33053  Ribes sanguineum Thomas W. Nelson, Jane Cole, Brad Klipfel 1974-5-8 1241 Humboldt Horse Mtn. area 1220 Comment
  CAS-BOT-BC144676  Ribes sanguineum var. glutinosum Kenneth Clark 1980-3-1 520 Humboldt lower and middle terraces of Dead Man's Gulch 36 Comment
  CAS-BOT-BC144692  Ribes sanguineum var. glutinosum Carl B. Wolf 1927-8-29 1191 Humboldt 7 mi. s. of Ferndale & Capetown, Bear River Ridge-- Mt. Glen Comment
  HSC36281  Ribes sanguineum var. glutinosum Barbara Kelly 1976-3-9 248 Humboldt Above Mad River at edge Comment
  HSC39950  Ribes sanguineum var. glutinosum Linda M. Barker 1976-3-22 1334 Humboldt 3 mi. W of Arcata Comment
  HSC79518  Ribes sanguineum var. glutinosum Kenneth Clark 1980-3-1 520 Humboldt Lower and middle terraces of Dead Man's Gulch 37 Comment
  JEPS79968 Image available Ribes sanguineum var. glutinosum Joseph P. Tracy 1949-4-10 18281 Humboldt North Coast Ranges, Redwood Creek, at Berry's Redwood Creek; North Coast Ranges, Redwood Creek 365 Comment
  UC154116  Ribes sanguineum var. glutinosum J. P. Tracy 1909-3-29 2948 Humboldt immediate vicinity Eureka 0 Comment
  CAS-BOT-BC173990  Ribes viscosissimum J. H. Thomas 1949-6-13 913 Humboldt Along trail between Le Perron Flat and Whiteys Peak. Six Rivers National Forest. (East of town of Orleans) 1371 Comment
  UC1199218  Rorippa curvisiliqua Joseph P. Tracy 1937-7-17 15437 Humboldt Eureka 45 Comment
  UC14402  Rorippa curvisiliqua Chesnut and Drew 1888-7-10 Humboldt Jarnigan's Comment
  HSC57039  Rosa gymnocarpa Overton, Butler 1979-7-24 9675 Humboldt Near Friday Camp, close to the town of Willow Creek. 1250 Comment
  RSA254749  Rosa gymnocarpa Thomas W. Nelson, J. Nelson 1973-5-28 957 Humboldt McKeown Ranch north of Dinsmore. Comment
  HSC19644  Rosa nutkana Harvey Doerksen 1962-5-22 29 Humboldt 100 W Azalea Reserve State Park Comment
  SEINET11912081  Rosa pinetorum F. H. Utech, Sato, T.; Ohara, M. 1990-1 90 -312 Humboldt Six Rivers National Forest, 0.5 mi S of CA 199 on French Hill Road 150 Comment
  HSC60308  Rubus armeniacus J. P. Smith, Steve Selva 1970-6-14 3850 Humboldt Along Hwy. 96 at Whitmore Creek 152 Comment
  HSC55979  Rubus lasiococcus G. L. Clifton 1979-7-31 11373 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  CAS-BOT-BC148385  Rubus leucodermis Doris K. Kildale 1927-5-13 3138 Humboldt Redwood Creek at Berry's 289 Comment
  HSC101456  Rubus leucodermis var. leucodermis Cara M. Witte 2008-8-6 997 Humboldt Board Camp Mountain. Approx. 1 mile south of intersection of 4N38 and National Forest 1 1416 Comment
  CAS-BOT-BC147249  Rubus parviflorus Ella Dales Cantelow 1936-5-18 1403 Humboldt 5 mi. N. of Orick Comment
  HSC57011  Rubus parviflorus Overton, Butler 1979-7-24 9604 Humboldt Near Titlow Hill, close to the town of Willow Creek. 1250 Comment
  CHSC13518  Rubus spectabilis A. R. Morrison 1974-4-27 Humboldt Ca. 1.5 mi. off Hwy. 101 on Westhaven Rd., Trinidad. 45 Comment
  JEPS44771  Rubus spectabilis Joseph P. Tracy 1923-4-15 6192 Humboldt at Berry's Northern Coast Ranges, Redwood Creek (Redwood Creek) 274 Comment
  UCD150631  Rubus spectabilis Wayne Padgett 1974-5-25 65 Humboldt Two miles S of Patrick's Point State Park on coast road. Comment
  RSA20972  Rubus spectabilis Carl B. Wolf 1937-6-15 8828 Humboldt Redwood Hwy. 1.2 mile S of Russ Grove. 61 Comment
  CAS-BOT-BC158791  Rubus ursinus Doris K. Kildale 1927-5-13 3139 Humboldt Redwood Creek at Berry's 289 Comment
  HSC19698  Rubus ursinus T. M. Mingo May 1965 Humboldt W edge of Big Lagoon Bog Comment
  HSC57045  Rubus ursinus Overton, Butler 1979-7-24 9694 Humboldt Near Friday Camp, close to the town of Willow Creek. 1250 Comment
  HSC70847  Rubus ursinus M. A. Baker 1980-6-7 1829 Humboldt Near Ammon Creek 732 Comment
  UC492169  Rubus ursinus Joseph P. Tracy 1931-4-26 9339 Humboldt Trinity River Valley at Willow Creek; Northern Coast Ranges, Trinity River Valley at Willow Cr 152 Comment
  UCD17846  Rubus ursinus H. Olmo 8-10 May 1962 62- 33 Humboldt California. Humboldt County: along Route 36 between Grizzly Creek Redwoods State Park and Dinsmore. Comment
  HSC55097  Rumex acetosella G. L. Clifton 1979-7-31 11801 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  HSC55223  Rumex acetosella Walter Overton 1979-8-1 12397 Humboldt Near Mill Creek, Middle Fork, close to the town of Hoopa. 1341 Comment
  HSC76604  Rumex acetosella John Demarinis 1981-7-21 885 Humboldt Near Table Bluff 38 Comment
  HSC17567  Rumex acetosella J. W. Johnson 1961-8-17 1039 Humboldt Arcata, W.M. Lanphere Farm, Samoa Peninsula. Comment
  HSC89469  Rumex acetosella P. A. Daly 1986-3-12 99 Humboldt Trinidad Head, along trail 61 Comment
  HSC95647  Rumex acetosella Andrea Pickart 2002-4-3 36 Humboldt Samoa Dunes, Eureka airport. 15 Comment
  RSA256728  Rumex acetosella Linda M. Barker 1974-5-11 171 Humboldt Redwood National Park, Bald Hills road. 549 Comment
  HSC75496  Rumex californicus J. O. Sawyer 1980-7-18 3638 Humboldt North Trinity Mountain Research Natural Area, north of Mill Creek Lake to Red Cap Hole. Comment
  JEPS39885  Rumex conglomeratus Lincoln Constance 1934-5-27 696 Humboldt s end Dyerville Bridge; South Fork Eel River, Bull Creek Region 45 Comment
  CHSC23320  Rumex fueginus Robert F. Thorne; P. Everett 1965-8-9 35329 Humboldt Clam Beach County Park; along highway in shallow water of ditch. 3 Comment
  CAS-BOT-BC433648  Rumex obtusifolius Alice Eastwood 1921-7-21 10656 Humboldt Carlotta Comment
  CAS-BOT-BC109294  Rumex paucifolius R. K. Gierisch; D. H. Esplin 1969-7-1 3538 Humboldt Six Rivers. Grouse Mountain. 1584 Comment
  CAS-BOT-BC433754  Rumex pulcher W. R. Dudley 1899-1-1 s.n. Humboldt Arcata Comment
  RSA91333  Rupertia physodes F. W. Peirson 1941-7-27 13095 Humboldt Elk Valley Forestry Camp. Comment
  UC1222605  Rupertia physodes Joseph P. Tracy 1951-7-26 19589 Humboldt extreme head Redwood Creek (n side of mountain); Board Camp Mountain 1541 Comment
  CAS-BOT-BC454159  Ruppia maritima Robert F. Thorne; P. Everett 1965-8-7 35208 Humboldt Samoa Peninsula: Elev. c. near sea level Comment
  UC161048  Sagina decumbens subsp. occidentalis Joseph P. Tracy 1905-4-30 2172 Humboldt sand dunes of Ocean Beach; Northern Coast Region, Humboldt Bay, Ocean Beach Comment
  HSC37955  Salicornia depressa Peter Sorensen 1976-6-2 Humboldt Humboldt Bay, Woodley Island Comment
  OBI36622  Salicornia pacifica David J. Keil 1983-7-2 17297 Humboldt Humboldt Bay salt marsh at Arcata Corp Yard Comment
  CHSC31321  Salicornia virginica Mark Stopher 1980-6-4 85 Humboldt Along tidal creek, near Elk River bridge Hwy 101. 1 Comment
  CAS-BOT-BC132712  Salix A. T. Whittemore 1980-3-15 80 -009 Humboldt Arcata, in residential area, along Alliance Road from Foster Ave. to the railroad tracks Comment
  UC490587  Salix Joseph P. Tracy 1932-4-17 9798 Humboldt Alton to Fortuna; Northern Coast Region, Eel R. 15 Comment
  CAS-BOT-BC132669  Salix coulteri Joseph P. Tracy 1932-7-31 10286 Humboldt Eel River, Alton to Fortuna 15 Comment
  UC481304  Salix exigua var. hindsiana Harold E. Parks and Joseph P. Tracy 1931-5-17 971 Humboldt mouth of Willow Creek at Trinity R. 150 Comment
  CAS-BOT-BC106850  Salix hookeriana Harold E. Parks 1931-5-12 0954 Humboldt Samoa, Humboldt Bay Comment
  CAS-BOT-BC107719  Salix hookeriana W. R. Dudley 1899-6-1 s.n. Humboldt Eureka Peninsula Comment
  CAS-BOT-BC107721  Salix hookeriana Joseph P. Tracy 1936-2-23 14773 Humboldt Fortuna, on bank of Eel River 15 Comment
  CAS-BOT-BC107739  Salix hookeriana Joseph P. Tracy 1925-10-11 7280 Humboldt Near Loren Frost place on Kneeland Road - Kneeland Prairie 609 Comment
  CAS-BOT-BC107743  Salix hookeriana Joseph P. Tracy 1936-2-23 14772 Humboldt Bank of Eel River - Fortuna 15 Comment
  CAS-BOT-BC107745  Salix hookeriana Carleton R. Ball; Harold E. Parks; Joseph P. Tracy 1932-5-11 1216 Humboldt In pine barrens near the coast, 1 mile north of Samoa Comment
  CAS-BOT-BC107747  Salix hookeriana Carleton R. Ball; Harold E. Parks; Joseph P. Tracy 1932-5-11 1226 Humboldt In pine barrens near the coast, 1 mile north of Samoa Comment
  CAS-BOT-BC107761  Salix hookeriana Harold E. Parks; Carleton R. Ball; Joseph P. Tracy 1932-5-11 1221 Humboldt In pine barrens near the coast, 1 mile north of Samoa. Comment
  HSC19956  Salix hookeriana H. E. Parks, S. T. Parks 1932-4-5 1103 Humboldt Little River Lagoon Comment
  HSC20067  Salix hookeriana C. R. Ball, H. E. Parks, J. P. Tracy 1932-5-11 1205 Humboldt Little River Lagoon, 4.5 mi. S of Trinidad 0 Comment
  HSC40861  Salix hookeriana Linda M. Barker 1976-4-13 1382 Humboldt Lanphere-Christensen Dunes, 3 mi. W of Arcata Comment
  JEPS12927  Salix hookeriana Joseph P. Tracy 1931-5-3 9356 Humboldt near Luffenholz Creek (near ocean); Northern Coast Region, Trinidad 60 Comment
  LA208754  Salix hookeriana Harold E. Parks; 1931-5-28 1000 Humboldt Little River Lagoon, Trinidad; at sea level Comment
  POM219284  Salix hookeriana H. E. Parks 1931-08 1053 Humboldt Little River Lagoon. 0 Comment
  POM219354  Salix hookeriana Joseph P. Tracy 1931-4-4 9330 Humboldt Near Samoa. On Humboldt Bay. 6 Comment
  RSA178540  Salix hookeriana Joseph P. Tracy 1950-9-10 19366 Humboldt On foothills of Cape Ridge. 0.5 mile S of town. 1 mile inland from Cape Mendocino. 61 Comment
  SBBG27479  Salix hookeriana H. E. Parks 1931-5-28 999 Humboldt Little River Lagoon Comment
  UC1196557  Salix hookeriana Joseph P. Tracy 1933-11-12 13114 Humboldt along S. Fork Eel R. Miranda; North Coast Ranges 91 Comment
  UC1196634  Salix hookeriana Joseph P. Tracy 1934-3-10 13161 Humboldt Big Lagoon Northern Coast Region 6 Comment
  UC470422  Salix hookeriana Joseph P. Tracy 1931-9-19 9677 Humboldt Van Duzen R. at Alton; Northern Coast Ranges, , Van Duzen R. 30 Comment
  UC481335  Salix hookeriana Harold E. Parks August, 1931 1057 Humboldt Bishop Pine Lodge Trinidad 150 Comment
  UC481349  Salix hookeriana Harold E. Parks 1931-5-12 953 Humboldt Samoa Comment
  UC490473  Salix hookeriana Joseph P. Tracy 1932-6-26 10262 Humboldt Valley of S. Yager Creek Northern Coast Ranges, Valley of S. Yager Creek 762 Comment
  UC504060  Salix hookeriana Jim Davis Apr 25 1933-Apr 27 1933 7 Humboldt Samoa Comment
  UC481801  Salix laevigata Mrs. H. P. Bracelin 1931-5-1 267 Humboldt between Miranda and Meyers (Sylvandale Station, S. Fork Eel R.); Sylvandale Station, S. Fork Eel R. Comment
  RSA034888  Salix laevigata H. P. Bracelin 1931-5-1 272 Humboldt Sylvandale, between Miranda and Meyers, South Fork of Eeel River. Comment
  UCSB10844  Salix laevigata Bracelin, H. 1931-5-1 Humboldt Sylvandale, between Miranda and Meyers, South Fork of Eel River Comment
  HSC19984  Salix lasiandra H. E. Parks, S. T. Parks 1932-4-16 1099 Humboldt Near Ferndale on the Eel River delta Comment
  UC176690  Salix lasiandra subsp. lasiandra Joseph P. Tracy 1913-6-20 4218 Humboldt Dinsmore's Ranch opposite Buck Mt.; Northern Coast Ranges, Van Duzen R. Valley 762 Comment
  UC469477  Salix lasiandra subsp. lasiandra Joseph P. Tracy Jul 16 1930-Jul 19 1930 8929 Humboldt meadow at McKay Camp; Northern Coast Ranges, S. Fork Mt. 1676 Comment
  UC481295  Salix lasiandra subsp. lasiandra Harold E. Parks and Joseph P. Tracy 1931-5-17 966 Humboldt mouth of Willow Creek at Trinity R. (banks of Willow Creek); Willow Creek 150 Comment
  UC490539  Salix lasiandra subsp. lasiandra Joseph P. Tracy 1932-7-13 10497 Humboldt meadow at Corral Prairie Corral Prairie; Klamath Mts., Trinity Summit 1524 Comment
  CAS-BOT-BC125218  Salix lasiandra var. lasiandra Harold E. Parks; Susan T. Parks 1932-5-12 01150 Humboldt Near bridge at mouth of Maple Creek, Big Lagoon Comment
  CAS-BOT-BC128198  Salix lasiandra var. lasiandra Doris K. Kildale 1927-7-19 3773 Humboldt Pond naer Jarnigan's, Upper Mad River Comment
  CAS-BOT-BC107019  Salix lasiolepis Carleton R. Ball; Harold E. Parks; Joseph P. Tracy 1932-5-12 01233 Humboldt On floodplain of the Van Duzen River, 1 1/2 miles east of Alton 30 Comment
  CAS-BOT-BC107578  Salix lasiolepis Joseph P. Tracy 1934-3-25 13166 Humboldt Blue Slide, on Van Duzen River 91 Comment
  CAS-BOT-BC107582  Salix lasiolepis Joseph P. Tracy; Carleton R. Ball; Harold E. Parks 1932-5-13 1255 Humboldt Floodplain of Mad River at Engelhart gravel pit, 2 miles east of Redwood Highway and above Blue Lake Road Comment
  CAS-BOT-BC107618  Salix lasiolepis Harold E. Parks 1931-3-31 9328 Humboldt Redwood Creek, at Berry's 274 Comment
  CAS-BOT-BC107622  Salix lasiolepis Joseph P. Tracy 1933-4-9 10966 Humboldt Bridgeville, along Van Duzen R. 228 Comment
  HSC96365  Salix lasiolepis Gordon Leppig 1999-4-15 1123 Humboldt Big Lagoon County Park, Big Lagoon Bog, E fen edge 3 Comment
  HSC98048  Salix lasiolepis Cara Witte 2007-7-17 542 Humboldt White Oak Opening 1257 Comment
  JEPS12931  Salix lasiolepis Joseph P. Tracy 1931-5-31 9328 Humboldt Redwood Creek at Berry's; Northern Coast Ranges 274 Comment
  JEPS13836  Salix lasiolepis Joseph P. Tracy 1926-8-12 7760 Humboldt at Berry's Redwood Creek; Northern Coast Ranges 274 Comment
  LA208778  Salix lasiolepis Joseph P. Tracy; 1933-4-2 10959 Humboldt Berry's Mountain; on Trinity Hwy; E of Redwood Creek 761 Comment
  UC1196611  Salix lasiolepis Joseph P. Tracy 1926-8-12 7762 Humboldt Redwood Creek, at Berry's 274 Comment
  UC1196659  Salix lasiolepis Joseph P. Tracy 1932-5-17 10078 Humboldt Willow Creek North Coast Ranges, Trinity River 152 Comment
  UC212997  Salix lasiolepis Joseph P. Tracy 1919-9-27 5302 Humboldt Willow Creek Northern Coast Ranges ((tributary of Trinity River), near its mouth) 152 Comment
  UC469412  Salix lasiolepis Joseph P. Tracy 1927-4-10 7887 Humboldt Redwood Creek, at Berry's 274 Comment
  UC469430  Salix lasiolepis Joseph P. Tracy 1931-9-7 9645 Humboldt at Willow Creek Trinity R. Valley; Northern Coast Ranges, Trinity R. Valley 152 Comment
  UC490545  Salix lasiolepis Joseph P. Tracy 1932-4-24 9807 Humboldt between Miranda and Redway (S. Fork Eel R.); North Coast Ranges, S. Fork Eel R. 91 Comment
  UC506392  Salix lasiolepis Joseph P. Tracy 1932-6-4 10126 Humboldt Bridgeville Northern Coast Ranges 228 Comment
  UC506400  Salix lasiolepis Joseph P. Tracy 1932-8-21 10358 Humboldt Three Cabins Northern Coast Ranges, Chaparral Mountain (lower western foothills of mt.) 457 Comment
  UC511971  Salix lasiolepis Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-13 1253 Humboldt 2 mi. e. of Redwood Hwy. and above Blue Lake Rd. Engelhart gravel pit (floodplain of Mad R.); Mad River Comment
  UC511982  Salix lasiolepis Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-12 1247 Humboldt Van Duzen R. at Blue Slide; Van Duzen R., Blue Slide 91 Comment
  UC512036  Salix lasiolepis Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-17 1324 Humboldt e Redwood Creek (w slope of mt., on Trinity Hwy); Berry's Mountain 762 Comment
  UC512118  Salix lasiolepis Joseph P. Tracy 1933-4-2 10960 Humboldt on Trinity Hwy e Redwood Creek; Berry's Mountain 762 Comment
  UCD111584  Salix lasiolepis Carleton R. Ball; Harold E. Parks, Joseph P. Tracy 1932-5-13 01255 Humboldt Mad River at Engelhart gravel pit, 2 miles east of Redwood Highway and above Blue Lake Road. Comment
  CAS-BOT-BC107291  Salix lasiolepis var. bigelovii Carleton R. Ball; Harold E. Parks; Joseph P. Tracy 1932-5-12 01247 Humboldt floodplain of Van Duzen River at Blue Slide 91 Comment
  POM219682  Salix lasiolepis var. bigelovii H. E. Parks 1931-5-14 963 Humboldt Van Duzen River between Alton and Carlotta. 15 Comment
  CAS-BOT-BC107416  Salix lasiolepis var. lasiolepis Doris K. Kildale 1926-9-17 2802 Humboldt [Dobbyns] Dobbyn Creek Comment
  CAS-BOT-BC125619  Salix melanopsis W. R. Dudley 1899-6-21 s.n. Humboldt Junction of the North and South Forks of Eel River Comment
  CAS-BOT-BC125621  Salix melanopsis Mrs. H. P. Bracelin 1931-5-2 284 Humboldt East of Redwood Highway, 6 km. south of Alton 20 Comment
  HSC20040  Salix melanopsis H. E. Parks 1931-5-14 965 Humboldt Van Duzen River, between Alton and Carlotta 15 Comment
  HSC20058  Salix melanopsis H. E. Parks 1931-5-14 964 Humboldt Van Duzen River, between Alton and Carlotta 15 Comment
  JEPS38370  Salix melanopsis W. L. Jepson 1902-6 2121 Humboldt Supply Creek Hupa Valley 243 Comment
  SBBG22044  Salix melanopsis R. F. Thorne 1957-9-2 Humboldt branch of Eel River at Burlington State Park, just S of Weott Comment
  SBBG28830  Salix melanopsis H. E. Parks, J. P. Tracy 1931-5-17 967 Humboldt mouth of Willow Crk at Trinity River 150 Comment
  SD919  Salix melanopsis Harold E. Parks 1931-5-14 965 Humboldt Van Duzen River between Alton and Carlotta 14 Comment
  UC198573  Salix melanopsis Joseph P. Tracy 1916-9-5 4776 Humboldt 4 mi. above mouth S. Fork Eel R.; Northern Coast Ranges, S. Fork Eel R. 60 Comment
  UC481266  Salix melanopsis Harold E. Parks 1931-5-28 1025 Humboldt Roosevelt Hwy. Bridge; Little River Lagoon Comment
  UC481356  Salix melanopsis Harold E. Parks 1931-5-14 956 a Humboldt Van Duzen R. above Bridgeville; Van Duzen R. 300 Comment
  UC481825  Salix melanopsis Mrs. H. P. Bracelin 1931-5-2 283 Humboldt 6 km. s. Alton (e. of Redwood Hwy.) 20 Comment
  UC519361  Salix melanopsis Joseph P. Tracy 1933-6-7 12513 Humboldt on Van Duzen R. Blue Slide; Northern Coast Ranges, Van Duzen R. 91 Comment
  RSA0005852  Salix parksiana H. E. Parks 1931-5-14 962 Humboldt Van Duzen River between Alton and Carlotta. 15 Comment
  CAS-BOT-BC129204  Salix piperi Carleton R. Ball; Harold E. Parks; Joseph P. Tracy 1932-5-13 1251 Humboldt Floodplain of Mad River at Engelhart gravel pit, 2 miles east of Redwood Highway and above Blue Lake Road Comment
  JEPS13084  Salix scouleriana Joseph P. Tracy 1936-2-2 14767 Humboldt vicinity of Carlotta 30 Comment
  LA208918  Salix scouleriana Harold E. Parks; 1931-5-12 955 a Humboldt Samoa; Humboldt Bay 0 Comment
  UC275521  Salix scouleriana Joseph P. Tracy 1924-7-4 6716 Humboldt at Hungry Hollow Bald Mt.; Northern Coast Ranges 762 Comment
  UC490507  Salix scouleriana Joseph P. Tracy 1932-8-11 10338 Humboldt Bridgeville Northern Coast Ranges, Bridgeville 228 Comment
  UC54674  Salix scouleriana J. P. Tracy 1900-12-30 977 Humboldt immediate vicinity Eureka Eureka 0 Comment
  CAS-BOT-BC128954  Salix sitchensis Kenneth Clark 1980-3-24 546 Humboldt On alluvial terrace of Dead Man's Gulch - Shelter Cove 15 Comment
  HSC90400  Salix sitchensis Jean Hanson 1980-3-8 5 Humboldt Indian (Gunther) Island, Humboldt Bay, Eureka, W end of island Comment
  HSC90465  Salix sitchensis Jean Hanson 1980-4-12 33 Humboldt Indian (Gunther) Island, Humboldt Bay, W end of island Comment
  SBBG57990  Salix sitchensis L. Rowntree 1931-7-25 Humboldt Carlotta Comment
  UC1196717  Salix sitchensis Joseph P. Tracy 1926-2-21 7357 Humboldt on Van Duzen R. Blue Slide; Northern Coast Ranges, Van Duzen R., Blue Slide 91 Comment
  UC481215  Salix sitchensis Harold E. Parks 1931-5-20 995 Humboldt Mad R. Blue Lake; , Blue Lake 15 Comment
  UC177248  Sambucus mexicana Joseph P. Tracy 1912-7-26 3836 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  CAS-BOT-BC223251  Sanicula bipinnatifida Joseph P. Tracy 1938-7-4 15985 Humboldt Vicinity of South Yager Creek 762 Comment
  HSC100692  Sanicula bipinnatifida Carl C. Marshall Apr 1886 184 Humboldt Hill at Scottsville. Comment
  HSC82108  Sanicula crassicaulis Thomas W. Nelson, Jane P. Nelson 1980-5-25 5253 Humboldt Along road from Dinsmore to Anderson Crossing, McKeown Ranch Rd. 100 m N of junction of road to Hindley Cabin 823 Comment
  UC314594  Sanicula graveolens Joseph P. Tracy 1926-6-20 7648 Humboldt Northern Coast Ranges, Horse Mountain Horse Mountain; Northern Coast Ranges, Horse Mountain 1524 Comment
  JEPS992  Sanicula laciniata Joseph P. Tracy 1938-3-27 15701 Humboldt Miranda, along South Fork of Eel River South Fork Eel River; Miranda, South Fork Eel River 121 Comment
  UCD128031  Sanicula laciniata R. N. Raynor 1935-3-2 s.n. Humboldt Fort Seward. Comment
  HSC48975  Sanicula tracyi Bruce Miner, Bob Easton 1979-5-29 Humboldt At east approach to State Route 36 bridge over Van Duzen River 747 Comment
  OBI55124  Sanicula tracyi Joseph P. Tracy 1947-6-25 17717 Humboldt Dinsmore's along Van Duzen Rivers opposite Black Mtn 762 Comment
  HSC55296  Sanicula tuberosa Terry Griswold, Butler 1979-7-10 6344 Humboldt Near Board Camp Mtn., close to the town of Willow Creek 1372 Comment
  HSC21645  Sanicula tuberosa F. Morrell 1949-5-15 Humboldt Berry Summit Comment
  SEINET13945256 Image available Sanicula tuberosa R. K. Gierisch, D. H. Esplin 1969-1 3531 Humboldt Six Rivers, Grouse Mtn, Sec 36, T5N, R4E. Alt 5200. NW 5% Comment
  UC668103  Saponaria officinalis Joseph P. Tracy 1929-7-21 8644 Humboldt Trinity River Valley at Willow Creek; Trinity River Valley at Willow Creek 152 Comment
  UC1198878  Saxifraga californica Joseph P. Tracy 1925-4-5 6953 Humboldt Kneeland Prairie; Northern Coast Ranges, Kneeland Prairie 762 Comment
  UC1949159  Saxifraga mertensiana Barbara Ertter with Thomas J. Delendick 1987-5-16 6936 Humboldt 3 mi E of Berry Summit on Hwy 299, ca 20 airmiles E of Arcata; on S side of road above Willow Creek Comment
  SEINET6168250  Saxifraga mertensiana J. P. Tracy 1911-6-4 3217 Humboldt Northern coast region, along Little River, 5 miles from the coast 122 Comment
  RSA0101648  Sceptridium multifidum Carl B. Wolf 1937-8-10 9090 Humboldt Big Lagoon, edge of bog at state park. 6 Comment
  HSC100467  Scirpus atrovirens Carl C. Marshall May 1886 218 Humboldt Ditches etc. Comment
  UC198641  Scirpus cernuus Joseph P. Tracy 1917-6-10 4821 Humboldt at Eureka; Northern Coast Region, at Eureka 0 Comment
  HSC102057  Scirpus microcarpus M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-13 962 Humboldt Rustic Camp, northwest of Patterson Meadows 1512 Comment
  RSA0009468  Scirpus microcarpus Marcus E. Jones 1924-4-26 s.n. Humboldt Eureka. Comment
  UC668005  Scirpus tabernaemontani H. E. Parks and Joseph P. Tracy 1931-5-17 9421 Humboldt Lack Pond Trinity River Valley, Lack Pond (opposite Willow Creek) 152 Comment
  HSC15633  Scoliopus bigelovii D. E. Anderson 1963-3-23 2397 Humboldt Bald Mtn. Rd. Comment
  HSC12558  Scrophularia californica D. La Conte 1970-7-7 20 Humboldt Comment
  UCSB15626  Scrophularia californica Breedlove, Dennis 1962-6-7 Humboldt 1.5 miles south of Samoa on peninsula on western side of Humboldt Bay Comment
  SEINET12330006  Scrophularia californica F. H. Utech 1986-1 86 -407 Humboldt Cape Mendocino, along Pacific Ocean 6 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
  HSC35354  Scutellaria siphocampyloides A. M. Montalvo, J. D. Ackerman 1975-6-22 483 Humboldt 6.4 mi. W of Dinsmore along Hwy. 36 Comment
  UC154265  Scutellaria tuberosa Mrs. M. H. Manning June, 1901 94 Humboldt Hupa Valley Comment
  CAS-BOT-BC64701  Sedum laxum subsp. heckneri Henry M. Pollard 1944-9-8 s.n. Humboldt Orleans Mt. 1524 Comment
  HSC82131  Sedum laxum subsp. heckneri D. K. Imper 1985-6-18 Humboldt N and S of Whiteys Peak 1707 Comment
  CAS-BOT-BC64703  Sedum oregonense Doris K. Kildale 1925-8-17 1221 Humboldt Trinity Summit 1828 Comment
  HSC97172  Sedum radiatum Erin Lonergan, Benjamin Hart 2007-6-11 7 Humboldt 14.1 mi. S of Hwy. 299 on FS Rd. NF1 1524 Comment
  SBBG2669  Sedum spathulifolium H. and M. Dearing 1939-5-24 3439 Humboldt cliffs above Ferndale Comment
  CAS-BOT-BC62182  Selaginella oregana Mrs. A. W. Kildale 1925-1-26 s.n. Humboldt Hungry Hollows, 5-6 mi east of Korbel Comment
  UC581706  Senecio integerrimus var. major Joseph P. Tracy 1933-7-11 12703 Humboldt Grouse Mountain North Coast Ranges 1524 Comment
  CDA7633  Senecio jacobaea F. Wetherbee 1959-8-27 2983 Humboldt Simpson property, Sweezey Dam, Mad River, south of Korbel. 0 Comment
  UC205181  Senecio minimus Joseph P. Tracy 1919-8-31 5185 Humboldt Eureka Northern Coast Ranges,Eureka Comment
  HSC95584  Senecio vulgaris Andrea Pickart 2002-3-14 4 Humboldt Samoa Dunes, BLM Endangered Plant Protection Area 0 Comment
  HSC85743  Sequoia sempervirens R. W. Becking 1985-1-17 Humboldt HSU Campus, Hse. 87 Comment
  RSA43681  Sherardia arvensis H. M. Pollard 1948-7-18 s.n. Humboldt Near Orleans. Comment
  UC602550  Sherardia arvensis Joseph P. Tracy 1933-6-13 12560 Humboldt Bair's; Redwood Creek 609 Comment
  UC1222509  Sidalcea malachroides Joseph P. Tracy 1950-7-12 19033 Humboldt on the Butter Valley Road 2 mi e Cameron Hill Junction (near Kneeland); e of Cameron Hill Jct, near Kneeland Comment
  HSC62693  Sidalcea malviflora Michelle Stevens 1979-5-25 139 Humboldt Junction of Hwy. 96 and the GO Rd. 640 Comment
  UC302048  Sidalcea malviflora subsp. asprella Joseph P. Tracy 1926-6-20 7659 Humboldt Horse Mountain Northern Coast Ranges, Horse Mountain 1524 Comment
  HSC103268  Sidalcea malviflora subsp. patula John McRae 2014-5-8 Humboldt South of Fortuna; north side of Hwy. 36, approx. 3/4 mi. east of intersection with Hwy 101. 18 Comment
  UC902194  Sidalcea malviflora subsp. patula Joseph P. Tracy 1944-5-14 17472 Humboldt bluff back Bucksport (Eureka); bluff back of Buckport, Eureka 15 Comment
  POM62156  Sidalcea oregana subsp. eximia Joseph P. Tracy 1917-9-1 4831 Humboldt Murphy Meadow, Bald Mountain 1067 Comment
  UC146134 Image available Sidalcea oregana subsp. eximia Joseph P. Tracy 1907-6-25 2578 Humboldt valley of Elk River Northern Coast Region, region about Humboldt Bay 0 Comment
  HSC102531  Sidalcea oregana subsp. oregana M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-29 1517 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1579 Comment
  UC1198367  Silene antirrhina Joseph P. Tracy 1919-5-31 5168 Humboldt along Willow Creek ((Tributary of Trinity River) near its mouth); Northern Coast Ranges, along Willow Creek 152 Comment
  HSC35031  Silene bolanderi Thomas W. Nelson, James Nelson 1975-5-24 1849 Humboldt McKeown Ranch, N of Dinsmore. Comment
  JEPS23249  Silene californica Joseph P. Tracy 1938-7-7 16040 Humboldt Grouse Mountain 1524 Comment
  RSA477843  Silene californica Thekla Mohr 1918-07 3339 Humboldt Eel River. Comment
  UC161014  Silene californica Joseph P. Tracy 1911-7-9 3457 Humboldt along Willow Creek (tributary of Trinity River, near its mouth); Northern Coast Ranges, along Willow Creek 182 Comment
  CDA24095  Silene californica R. Spadoni 1992-6-15 Humboldt Along mad River east of Arcata, near Blue Lake, Redwood Valley. 0 Comment
  RSA47141  Silene californica Doris K. Kildale 1925-3-29 617 Humboldt Alton hill. Comment
  CAS-BOT-BC174879  Silene campanulata subsp. glandulosa Volney Rattan 1883-1-1 s.n. Humboldt Hoopa Valley Comment
  HSC104081  Silene campanulata subsp. glandulosa S. Carothers 2001-6-20 Humboldt Six Rivers National Forest; Lassics Botanical Area, below Rd. 1S11 1579 Comment
  CAS-BOT-BC387075  Silene gallica C. V. Piper 1921-5-22 s.n. Humboldt Eureka Comment
  JEPS50918  Silene gallica Lincoln Constance 1934-5-24 631 Humboldt lower Look Prairie on e side Bull Creek Region, South Fork Eel River, Look Prairie (Bull Creek Region, South Fork Eel River) 121 Comment
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Mar 24 2013
  HSC4188  Silene gallica J. E. Lankila 1962-5-14 23 Humboldt W bank of river at Fernbridge Comment
  HSC90243  Silene gallica Jean Hanson 1980-5-24 57 Humboldt Indian (Gunther) Island, in Humboldt Bay, city of Eureka. W end of island Comment
  UC13555  Silene hookeri W. C. Blasdale 1896-6-8 Humboldt Grahams Grahames ((Grahames?)) Comment
  BLMAR151  Silene laciniata subsp. californica Donald Hazlett 1994-6-7 151 Humboldt King range, near horse Mt. Ridge rd 670 Comment
  CAS-BOT-BC389069  Silene laciniata subsp. californica W. R. Dudley 1899-6-20 s.n. Humboldt South Fork of Eel River Comment
  UC1198792  Sisymbrium altissimum Joseph P. Tracy 1937-5-31 15319 Humboldt Trinity River Valley at Willow Creek Willow Creek; Trinity River Valley, Willow Creek 152 Comment
  HSC23120  Sisyrinchium bellum Norman Dennis 1965-6-8 112 Humboldt 0.25 mi. S and 1 mi. E of junction of Barry Ridge Rd. and Eureka-Bridgeville county road, along Ashfield Ridge Rd., 5 mi. SE of Kneeland 793 Comment
  HSC91874  Sisyrinchium californicum E. Mackey 1986-5-13 Humboldt Patrick's Point State Park Comment
  UCD126814  Solanum americanum Robert F. Thorne; P. Everett 1965-8-5 35147 Humboldt Samoa Dunes. 3 Comment
  UC673109  Solanum americanum Joseph P. Tracy 1940-10-17 16767 Humboldt 2 - 5 mi e of the South Fork (along Eel River, Camp Grant); Eel River, Camp Grant 45 Comment
  CHSC52961  Solanum aviculare L. P. Janeway 1984-5-16 803 Humboldt On the North Spit of Humboldt Bay; alongside the dirt road on south side of the Coast Guard Station. 3 Comment
  HSC89586  Solanum aviculare M. Roantree 1985-5-24 57 Humboldt W side of Trinidad Head, along trail Comment
  UC1196153  Solanum umbelliferum Joseph P. Tracy 1934-6-20 13240 Humboldt Carlotta; Northern Coast Ranges, Carlotta 60 Comment
  RSA167400  Solidago canadensis subsp. elongata Joseph P. Tracy 1948-9-12 18210 Humboldt Trinity Summit, at head of meadow at Box Camp. 1463 Comment
  CAS-BOT-BC365433  Solidago elongata Doris K. Kildale 1926-8-17 1211 Humboldt Trinity Summit 1828 Comment
  HSC58149  Solidago elongata G. L. Clifton, Griswold 1979-8-2 12196 Humboldt Near Oregon Creek, close to the town of Hoopa 1663 Comment
  UC1199321  Solidago elongata Joseph P. Tracy 1932-7-17 10652 Humboldt Trinity Summit 1584 Comment
  UC630465  Solidago elongata H. E. and S. T. Parks September 1937 24081 Humboldt Spruce Cove , Spruce Cove (Trinidad) 64 Comment
  HSC12310  Solidago spathulata Wendell Wood 1970-10-7 308 Humboldt Old Hwy. 101, E side of Freshwater Lagoon 46 Comment
  LA204224  Solidago spathulata S. K. Harris; 1939-9-5 990 Humboldt Samoa Comment
  UC1478656  Solidago spathulata Robert F. Thorne 1974-7-29 45070 Humboldt between Humboldt Bay and Pacific Ocean (Samoa Dunes); Samoa Dunes Comment
  UC249853  Solidago spathulata Joseph P. Tracy 1924-9-21 6901 Humboldt around Humboldt Bay (Eureka); Northern Coast Region, around Humboldt Bay, Eureka 15 Comment
  HSC35992  Solidago velutina subsp. californica Thomas W. Nelson, James Nelson 1975-9-1 2190 Humboldt Eel River at High Rock State Park Comment
  HSC39962  Soliva sessilis Linda M. Barker 1976-4-13 1385 Humboldt 3 mi. W of Arcata Comment
  HSC47627  Soliva sessilis J. P. Smith 1977-4-23 9019 Humboldt 2.5 mi. S of Shelter Cove Rd., S Fork of Bear Creek at Wailaki Campground. 561 Comment
  HSC6224  Sonchus oleraceus J. W. Johnson 1961-8-17 1043 Humboldt Arcata, W.M. Lanphere Farm, Samoa Peninsula. Comment
  HSC56199  Sorbus scopulina Gilbert Muth 1979-8-1 12165 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1677 Comment
  CAS-BOT-BC236543  Sorghum halepense Henry M. Pollard 1945-9-4 s.n. Humboldt Nera Camp Creek, east side of Klamath River Comment
  HSC21348  Sparganium emersum D. E. Anderson 1961-9-9 1788 Humboldt Along S end of Hwy. 101 causeway over Big Lagoon. Comment
  UCSB34193  Spartina foliosa Kearns, Dennis 1979-8-24 Humboldt Spring Tide Area of Arcata Bay, Arcata Boat Launching Facility at the South end of "I" Street Comment
  HSC79185  Spergula arvensis L. P. Janeway 1984-2-4 710 Humboldt Along Bayside Rd. NW of Jacoby Creek School 18 Comment
  HSC26360  Spergularia macrotheca T. O. Osborne 1970-6-18 46 Humboldt Green Rock, 1-5/8 mi. N, 3/4 mi. W of Trinidad Lighthouse. Comment
  CAS-BOT-BC390304  Spergularia macrotheca var. macrotheca S. K. Harris 1936-6-7 3225 Humboldt Eureka Comment
  UC275298  Spiraea douglasii R. M. Holman 1925-7-23 Humboldt Big Lagoon Comment
  HSC19746  Spiraea splendens var. splendens R. J. Vernimen 1963-3-25 14 Humboldt Along railroad tracks at Clam Beach lagoons Comment
  HSC16660  Spiranthes romanzoffiana D. E. Anderson 1961-9-13 1807 Humboldt Big Lagoon County Park Comment
  UC1196398  Spiranthes romanzoffiana Mrs. Alma Bonstell 1912-8-5 Humboldt Christmas Prairie Northern Coast Ranges 914 Comment
  HSC14427  Stachys ajugoides H. E. Parks, S. T. Parks Aug 1943 24252 Humboldt Spruce Cove, Trinidad. 61 Comment
  UC1225846  Stachys ajugoides var. rigida Joseph P. Tracy 1946-5-30 17547 Humboldt 5 mi e Carlotta (open flat by old Strong's District School House) 60 Comment
  UC1239732  Stachys ajugoides var. rigida Joseph P. Tracy 1935-7-25 14243 Humboldt lower end Brett Hole; Trinity Summit 1584 Comment
  JEPS63062  Stachys ajugoides var. rigida W. L. Jepson 1936-8-15 17901 Humboldt 2 mi e Carlotta Comment
  UC668220  Stachys ajugoides var. rigida Joseph P. Tracy 1938-8-21 16131 Humboldt in front of s end Stone Lagoon (along coast); Dry Lagoon 3 Comment
  UCLA71140  Stachys ajugoides var. rigida Joseph P. Tracy 1938-6-15 15937 Humboldt vicinity Carlotta 30 Comment
  HSC100512  Stachys bullata Carl C. Marshall May 1885 77 Humboldt Thickets, roadsides, etc. Comment
  RSA447391  Stachys emersonii Christopher Davidson 1973-5-29 2201 Humboldt Ca. 2 mi S of Carlotta on St. Hwy 36 61 Comment
  HSC76521  Stachys rigida var. rigida Michael Ericksen 1981-8-21 1083 Humboldt Near Dan East Cabin 1609 Comment
  CAS-BOT-BC175344  Stellaria borealis subsp. sitchana Doris K. Kildale 1926-3-24 1684 Humboldt Ryan Slough near the Occidental Ranch Comment
  HSC58104  Stellaria crispa G. L. Clifton, Griswold 1979-8-1 12039 Humboldt Near N Trinity Mtn., close to the town of Hoopa 1799 Comment
  UC1116227  Stellaria crispa Joseph P. Tracy 1943-3-21 17411 Humboldt Scotia 30 Comment
  UCD99346  Stellaria crispa Joseph P. Tracy 1943-3-21 17411 Humboldt Scotia. 30 Comment
  HSC97389  Stipa lepida J. P. Tracy 1933-5-20 12247 Humboldt Grassy hillside near Petrolia, Mattole Valley 152 Comment
  CAS-BOT-BC87611  Streptanthus tortuosus Henry M. Pollard 1946-9-2 s.n. Humboldt Orleans Mount Trail. 1524 Comment
  CAS-BOT-BC87613  Streptanthus tortuosus Joseph P. Tracy; F. W. Pennell 1940-7-7 16667 Humboldt Grouse Mountain. 1463 Comment
  HSC57178  Streptanthus tortuosus var. tortuosus Terry Griswold, Marvin Butler 1979-7-10 6206 Humboldt Near Kinsey Ridge, close to the town of Willow Creek 1244 Comment
  HSC99005  Streptanthus tortuosus var. tortuosus Cara Witte 2008-6-15 730 Humboldt Coldspring Camp. 1460 Comment
  UCR275109  Streptopus amplexifolius Charity A. Hartshorn 2016-5-14 33 Humboldt Arcata Community Forest 244 Comment
  HSC58128  Symphoricarpos mollis Gilbert Muth 1979-8-1 12121 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1677 Comment
  CAS-BOT-BC99165  Symphyotrichum chilense Carl B. Wolf 1927-8-29 1201 Humboldt 7 mi. s. of Ferndale & Capetown, Bear River Ridge, Mt. Glen Comment
  HSC5046  Symphyotrichum chilense H. E. Parks, S. T. Parks 1930-9-14 772 Humboldt Big Lagoon Comment
  SBBG60770  Symphyotrichum chilense R. Hartwell 1938-8-6 Humboldt Eureka Comment
  CAS-BOT-BC99167  Symphyotrichum chilense L. R. Abrams 1927-9-1 12063 Humboldt unspecified Comment
  UC29837  Symphyotrichum chilense C. C. Marshall 1886-1-1 Humboldt Comment
  HSC57206  Symphyotrichum spathulatum var. spathulatum Griswold, Butler 1979-7-12 7163 Humboldt Near Groves Prairie, close to the town of Willow Creek. 1256 Comment
  HSC99571  Symphyotrichum spathulatum var. spathulatum K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-8-10 236 Humboldt Near North Trinity Mtn, 11. 9 mi east of Hoopa on Big Hill Rd (8N01), at Box Camp, Six Rivers National Forest. 1372 Comment
  UC672289  Symphyotrichum subspicatum Frank W. Peirson 1923-7-11 3882 Humboldt 7 mi n Arcata Comment
  HSC26305  Synthyris cordata Thomas W. Nelson 1971-4-24 403 Humboldt Adjacent to E Fork of Willow Creek Comment
  HSC21147  Synthyris reniformis J. P. Tracy 1906-4-15 2408 Humboldt Bald Mtn., 3 mi. E of Korbel 610 Comment
  HSC89602  Synthyris reniformis M. Roantree 1985-4-28 17 Humboldt W side of Trinidad Head on an outcropping W of the trail Comment
  UC1173660  Tanacetum balsamita Joseph P. Tracy 1939-9-15 16500 Humboldt Eureka Comment
  UC1199274  Tanacetum balsamita Joseph P. Tracy 1936-6-21 14990 Humboldt Iaqua, near abandoned ranch site Iaqua 609 Comment
  SJSU5383  Tanacetum bipinnatum T. A. Fulton 1969-5-20 Humboldt strand of Stone Lagoon c. 3 mi SW of Orick Comment
  SBBG53001  Tanacetum vulgare J. D. Hobson -Jun-1966 Humboldt Loleta Comment
  UC1223145  Taraxacum officinale Joseph P. Tracy 1943-4-10 17415 Humboldt Eureka Comment
  UC1239514  Taraxacum officinale J. P. Tracy 1901-1-13 984 Humboldt immediate vicinity Eureka 0 Comment
  HSC6260  Taraxacum officinale J. L. Baker 1965-3-11 10 Humboldt 4 mi. N of Arcata on North Bank Rd. Comment
  CAS-BOT-BC85208  Taxus brevifolia L. B. Kildale 1931-8-9 s.n. Humboldt Three Creeks on Willow Creek Road Comment
  LA5974  Taxus brevifolia L. Miller; 1934-8-25 Humboldt Carlotta, Van Duzen River Comment
  HSC63223  Tellima grandiflora M. A. Baker 1978-5-6 511 Humboldt 2 km. S of Weitchpec Comment
  SEINET12217338  Tellima grandiflora F. H. Utech 1988-1 88 -279 Humboldt along CA 36 from Bridgeville enroute to Dinsmore, mile marker 42.00, bluffs above Van Duzen River 800 Comment
  UCSB24358  Tellima grandiflora Tracy, Joseph 1935-7-23 Humboldt Trinity Summit; Lower End of Brett Hole 1584 Comment
  UC502931  Thalictrum fendleri var. polycarpum Joseph P. Tracy 1932-6-26 10263 Humboldt valley of South Yager Creek Northern Coast Ranges 762 Comment
  CHSC10101  Thermopsis macrophylla D. E. Anderson 1965-5-15 36926 Humboldt About 7 miles north of Hoops on Bloody Camp Prairie road. Comment
  UC1198809  Thlaspi montanum var. montanum Harold E. Parks and Joseph P. Tracy 1934-6-14 11029 Humboldt Horse Mt. 1402 Comment
  UC1565796  Thlaspi montanum var. montanum R. Spellenberg 1990-7-10 10234 Humboldt on USFS Rd 6N08, 7.5 air mi sw Salyer (on Friday Ridge 0.4 mi ne of junction with USFS Rd. 1, extreme e edge county); on Friday Ridge 1371 Comment
  HSC30092  Thuja plicata Chris Gist 1973-5-14 150 Humboldt HSC Campus S of Engineering Building Comment
  NY17197  Thuja plicata H. E. Parks 1932-7-25 1139 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
  RSA537270  Thuja plicata W. Wisura, J. Romero 1991-10-20 4611 Humboldt 9.7- 10.6 mi E of Hwy 101 near Arcata, along Hwy 299 above Blue Lake. Comment
  SBBG34243  Thuja plicata M. Van Rensselaer 1938-3-31 Humboldt Humboldt County [no specific locality] Comment
  UC275476  Thuja plicata Joseph P. Tracy 1925-3-7 6931 Humboldt North Fork Eel River North Coast Region, North Fork Eel River (around Humboldt Bay) 60 Comment
Read comments
Jul 4 2018
  UC63991  Thuja plicata Mrs. M. H. Manning 1901-10-1 Humboldt Comment
  UC1198814  Thysanocarpus curvipes Joseph P. Tracy 1939-4-29 16242 Humboldt Klamath River at mouth of Slate Creek; Klamath River at mouth of Slate Creek 121 Comment
  CAS-BOT-BC88326  Thysanocarpus curvipes Joseph P. Tracy 1938-5-1 15736 Humboldt Trinity River Valley, at Willow Creek. 152 Comment
  RSA246667  Tiarella trifoliata var. unifoliata R. F. Thorne, Percy C. Everett 1965-8-5 35140 Humboldt Mt. Chamisal; Below summit. 534 Comment
  UC154081  Tiarella trifoliata var. unifoliata J. P. Tracy 1907-6-20 2567 Humboldt immediate vicinity Eureka; immediate vicinity of Eureka 0 Comment
  RSA191949  Tiarella trifoliata var. unifoliata R. F. Thorne 1957-9-2 18998 Humboldt Burlington State Park, just S of Weott. Comment
  RSA24194  Tiarella trifoliata var. unifoliata Carl B. Wolf 1941-3-1 9979 Humboldt 1 mi. n.e. of Strongs Station (on the Van Duzen River) on rd. to Yager. 61 Comment
  RSA183607  Tolmiea menziesii E W Styskel 1963-5-19 39 Humboldt 3 miles S.E. of Korbel, on Snow Camp Road. 305 Comment
  UC27661  Tonella tenella Mrs. M. H. Manning Apr 1899 Humboldt Hoopa Valley Comment
  JEPS14254  Torilis arvensis subsp. arvensis Mrs. Archie Cathey 1938-7-30 Humboldt Miranda at Cathey Ranch 152 Comment
  JEPS63914  Toxicodendron diversilobum W. L. Jepson 1932-7-27 16430 Humboldt on way to Bull Creek Dyerville Comment
  HSC6288  Tracyina rostrata J. P. Tracy 1930-6-15 8762 Humboldt Dobbyn Creek. 152 Comment
  UC668060  Trautvetteria caroliniensis var. occidentalis Joseph P. Tracy 1937-7-2 15387 Humboldt ne of Hawkins Bar (in Trinity Summit Range, Happy Camp Mountain); Trinity Summit Range, Happy Camp Mountain 1280 Comment
  UCLA30918  Trichostema laxum Harlan Lewis 1955-7-19 Humboldt 0.1 mi W of Trinity County line on State Highway 36 Comment
  CHSC31274  Trientalis latifolia Mark Stopher 1980-5-20 70 Humboldt In dense forest along the Van Duzen River near Rte 36. Comment
  HSC54597  Trientalis latifolia Overton, Butler 1979-7-24 9676 Humboldt Near Friday Camp, close to the town of Willow Creek. 1250 Comment
  UC154025  Trientalis latifolia J. P. Tracy 1900-5-22 798 Humboldt immediate vicinity of Eureka 0 Comment
  UC1223381  Trifolium albopurpureum var. dichotomum Joseph P. Tracy 1933-5-20 12234 Humboldt s the point (mouth of Domingo Creek); Cape Mendocino Comment
  UC1223472  Trifolium albopurpureum var. dichotomum Joseph P. Tracy 1943-5-23 17426 Humboldt e Redwood Creek (on Trinity Highway); Berry's Mountain Comment
  UC495671  Trifolium albopurpureum var. dichotomum Joseph P. Tracy 1927-6-5 8101 Humboldt s Yager Creek (valley); Northern Coast Ranges 762 Comment
  UC1223507  Trifolium barbigerum Joseph P. Tracy 1950-6-18 18841 Humboldt 1 mi e Cape Mendocino (on slopes); Cape Ridge 152 Comment
  JEPS79995  Trifolium barbigerum var. barbigerum Joseph P. Tracy 1932-5-17 10066 Humboldt Berry's North Coast Ranges, Redwood Creek 274 Comment
  UC1197181  Trifolium bifidum var. decipiens Joseph P. Tracy 1906-5-6 2448 Humboldt near Hydesville; North Coast Ranges 60 Comment
  UC1223487  Trifolium cyathiferum Joseph P. Tracy 1934-6-27 11082 Humboldt 2 mi s Horse Mtn (Grouse Mtn, Cold Springs) 1432 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
  BLMAR741  Trifolium dubium Jennifer Wheeler 2015-5-18 741 Humboldt King range, at corrals or strawberry rock grazing allotment 121 Comment
  HSC40039  Trifolium eriocephalum Thomas W. Nelson, James Nelson 1976-7-1 2890 Humboldt Ridge N of Bear Creek 1494 Comment
  UC1223464  Trifolium eriocephalum var. eriocephalum Joseph P. Tracy 1949-8-4 18415 Humboldt toward Trinity Summit (Mud Springs, on rd from Hoopa) 1341 Comment
  UCD108946  Trifolium fragiferum P. B. Kennedy 1929-6-14 10326 Humboldt Eureka. Niles Ranch. Comment
  HSC46037  Trifolium fucatum Catherine Chin 1978-5-5 56 Humboldt 17.4 mi. S of Ferndale on Mattole Rd. 91 Comment
  HSC48612  Trifolium fucatum Mark Flippo 1978-5-18 61 Humboldt Hwy. 101 N jct. with Giuntoli Lane Comment
  SDSU5278  Trifolium fucatum D. F. Howe 1962-5-22 3308 Humboldt 0.7 miles east of Orick on Bald Hill road. 396 Comment
  RSA168896  Trifolium fucatum var. fucatum Joseph P. Tracy 1950-6-8 18747 Humboldt Cape Ridge, one mil east of Cape Mendocino. 152 Comment
  HSC44836  Trifolium longipes subsp. oreganum Thomas W. Nelson, Jane P. Nelson 1977-6-19 3520 Humboldt SW of Alder Springs along Rd. 2S08 1463 Comment
  HSC98664  Trifolium longipes subsp. oreganum Cara Witte 2008-7-2 821 Humboldt Board Camp Mountain. Forest Service Rd. 4N38. Approximately 1 mile south of 4N38 and National Forest 1 intersection. 1416 Comment
  HSC49103  Trifolium macraei Catherine Best 1979-5-20 Humboldt Lanphere-Christensen Dunes Comment
  HSC22536  Trifolium microcephalum D. E. Anderson, J. P. Smith 1970-5-10 5057 Humboldt Along road from Redwood Creek to Hoopa, 1-3 mi. W of Hoopa Comment
  RSA183525  Trifolium microcephalum D. E. Anderson 1965-5-8 3645 Humboldt About 2 miles north of Willow Creek along road running along east side of Trinity River. Comment
  UC1602107  Trifolium microcephalum Joseph P. Tracy 1922-4-30 6022 Humboldt near Willow Creek; Northern Coast Ranges, Trinity River Valley 152 Comment
  HSC45139  Trifolium microcephalum R. Sutherland 1978-5-19 8 .19578 Humboldt 131 Comment
  CDA28005  Trifolium microdon E. C. Whitney 1978-5-25 Humboldt Art Tooby property, Harris. 0 Comment
  HSC45145  Trifolium microdon R. Sutherland 1978-5-24 3 .24578 Humboldt Mckee Flat 287 Comment
  JEPS4430  Trifolium obtusiflorum Harley P. Chandler June, 1901 1322 Humboldt Hupa Indian Reservation North Coast Ranges Comment
  UC1197489  Trifolium oliganthum Joseph P. Tracy 1922-4-30 6002 Humboldt near Willow creek; Northern Coast Ranges, Trinity River Valley 152 Comment
  HSC98062  Trifolium repens Cara Witte 2007-7-11 503 Humboldt Grouse Mountain. Forest Service Road 5N04. Near spring. 1583 Comment
  RSA249709  Trifolium repens Robert F. Thorne, Percy C. Everett, K. Thorne 1965-8-8 35250 Humboldt N. edge of Eureka, E. of Hwy. 101 5 Comment
  HSC34617  Trifolium subterraneum David Ferranti 1974-5-6 Humboldt Garden weed at 43601/2 Union St. Eureka Comment
  HSC45107  Trifolium subterraneum R. Sutherland 1978-5-12 2 .12578 Humboldt Mckee Flat 288 Comment
  SEINET12157365  Trifolium subterraneum J. P. Tracy 1951-1 19520 Humboldt Hydesville, ranch of Everett Beck Comment
  RSA168845  Trifolium variegatum var. variegatum Joseph P. Tracy 1935-5-24 13815 Humboldt Eureka. Comment
  UC1223529  Trifolium variegatum var. variegatum Joseph P. Tracy 1937-6-20 15336 Humboldt 10 mi upstream mouth of Bear River 152 Comment
  UC495682  Trifolium variegatum var. variegatum Joseph P. Tracy 1932-5-17 100065 Humboldt Berry's Northern Coast Ranges (Redwood Creek) 274 Comment
  HSC63279  Trifolium willdenovii M. A. Baker 1979-5-6 475 Humboldt Weitchpec. Comment
  UC165539  Trifolium willdenovii Harley P. Chandler June 1901 1450 Humboldt Klamath River North Coast Ranges 304 Comment
  JEPS4396  Trifolium willdenovii Joseph P. Tracy 1927-6-12 8169 Humboldt lower slopes Horse Mtn; Northern Coast Ranges 914 Comment
  UC1223316  Trifolium willdenovii Joseph P. Tracy 1942-6-12 17111 Humboldt along hwy (at head of lagoon); Big Lagoon Comment
  CAS-BOT-BC451806  Triglochin maritima L. R. Abrams 1918-6-12 7086 Humboldt Eureka Comment
  HSC100504  Triglochin maritima Carl C. Marshall Jul 1886 230 Humboldt Salt marshes, etc. Comment
  POM319420  Triglochin maritima Patricia Wilder 1968-8-21 4392 Humboldt Bog in Big Lagoon Park, just west of Hwy 101; Mt. Range: Coast range; Drainage Area: Big Lagoon to Pacific Ocean. 2 Comment
  CHSC96700  Triglochin striata Gordon Leppig 1999-10-25 1267 Humboldt State Highway 101, mile marker 61.40. Ditch on east side of highway. UTM zone 10, 4519N, 406 E. 2 Comment
  SDSU19196  Trillium albidum Michael G. Simpson, Michael Mesler and Michael Mayer 2008-5-27 3006 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
  SEINET12050371  Trillium albidum F. H. Utech 1988-1 88 -286 Humboldt along CA 36 from Bridgeville enroute to Dinsmore, Mile Marker 42.00, above Van Duzen River 800 Comment
  CAS-BOT-BC519077  Trillium angustipetalum Doris K. Kildale; L. B. Kildale 1930-5-11 9531 Humboldt Wiregrass Prairie, The Bald Hills 792 Comment
  SEINET3991344  Trillium chloropetalum Unknown 1950-4-20 18615 Humboldt Buck Mountain, lower foothills of its N. W. slope, 2 mi W of Dinsmore's 762 Comment
  HSC103980  Trillium ovatum Kyle Brown 2015-4-25 41 Humboldt Arcata, Redwood Park 98 Comment
  UCR3521  Trillium ovatum David Whistler, H. M. Whistler 1964-7-31 640731- 9 Humboldt North Coast, at Del Norte county line on US Hwy 101 [between Orick and Klamath] 137 Comment
  UC1537232  Trillium ovatum Gordon H. True Jr. 1936-2-26 329 Humboldt on Eel R. near Pepperwood; Eel. R. 91 Comment
  UCD18653  Trillium ovatum Roman Gankin 1956-3-17 105 Humboldt off US Hwy 101. Comment
  JEPS11782  Triodanis perfoliata Milo S. Baker 1923-6-20 42 Humboldt headwaters of Yager Creek Comment
Read comments
Jan 2 2016
  HSC72575  Triphysaria eriantha J. P. Smith, J. O. Sawyer 1976-5-2 8637 Humboldt Redwood Valley Comment
  UC168980  Triphysaria eriantha subsp. eriantha Harley P. Chandler May, 1901 1249 Humboldt Bair's Ranch on Redwood Creek 152 Comment
  CHSC31269  Triphysaria eriantha subsp. rosea Mark Stopher 1980-4-2 45 Humboldt In sand dunes on Samoa Oeninsula near Humboldt Bay. 4 Comment
  CDA41899  Triphysaria pusilla E. C. Whitney 1966-4-25 s.n. Humboldt E. Baird property, Hydesville. 0 Comment
  HSC23103  Triphysaria pusilla D. E. Anderson 1965-5-6 3609 Humboldt Along Hwy. 299 Comment
  UC902248  Triphysaria versicolor subsp. faucibarbata Joseph P. Tracy 1944-5-14 17469 Humboldt Eureka 6 Comment
  SBBG68601  Triphysaria versicolor subsp. faucibarbata S. W. Hutchinson -Apr-1927 106 Humboldt Humboldt County [no specific locality] 30 Comment
  UCD93635  Trisetum canescens R. Tofsrud 1947-7-1 199 Humboldt North of Harris. Comment
  UCD93909  Trisetum cernuum Joseph P. Tracy 1939-4-25 16223 Humboldt Bull Creek. 60 Comment
  UC666900  Triteleia bridgesii Joseph P. Tracy 1929-7-4 8616 Humboldt French Camp 1066 Comment
  HSC53803  Triteleia hyacinthina Griswold, Butler 1979-7-10 6233 Humboldt Near Kinsey Ridge, close to the town of Willow Creek 1244 Comment
  UC1225868  Triteleia hyacinthina Joseph P. Tracy 1942-6-15 17136 Humboldt near Redcrest resort (Englewood); Englewood 91 Comment
  UC15023  Triteleia hyacinthina Harley P. Chandler May 1901 1246 Humboldt Redwood Belt North Coast Ranges 152 Comment
  HSC39173  Triteleia laxa D. E. Anderson, J. P. Smith 1971-6-28 - 1229 Humboldt Along Mad River, 2 mi. S of Blue Lake. Comment
  UC666893  Triteleia laxa Joseph P. Tracy 1927-5-30 8094 Humboldt Garberville 152 Comment
  UC1197720  Triteleia laxa J. P. Tracy 1901-6-23 1188 Humboldt fields near Ryans Slough Hill; immediate vicinity of Eureka 0 Comment
  UCD67633  Tsuga heterophylla D. Sanchez-Mata 1996-6-27 s.n. Humboldt Blue Lake. Mad River. 175 Comment
  CDA4354  Ulex europaeus T. C. Fuller 1958-6-17 1714 Humboldt T. J. Cotter property, mouth of Elk River, Eureka. 0 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
  POM131979  Vaccinium arbuscula Joseph P. Tracy 1906-4-29 2425 Humboldt Eureka. Comment
  CAS-BOT-BC199223  Vaccinium membranaceum Joseph P. Tracy 1935-7-22 14121 Humboldt Forks of Tish-Tang-a-Tang Creek, Trinity Summit 1371 Comment
  UC562245  Vaccinium membranaceum Joseph P. Tracy 1935-7-22 14121 Humboldt Forks of Tish-Tang-A-Tang Creek Trinity Summit 1371 Comment
  CAS-BOT-BC199322  Vaccinium ovatum Carl B. Wolf 1930-10-24 1761 Humboldt Along the Klamath River 2 miles below mouth of Salmon River 152 Comment
  HSC47491  Vaccinium ovatum Sheila Logan 1978-4-9 15 Humboldt Fieldbrook, 1/2 mi. E of McKinleyville on Murray Rd. 122 Comment
  POM118414  Vaccinium ovatum Marcus E. Jones 1924-4-26 s.n. Humboldt Scotia. Comment
  UC1225908  Vaccinium ovatum Joseph P. Tracy 1943-3-14 17409 Humboldt 5 mi e Carlotta (by old Strong's District School House) 60 Comment
  UCSB27859  Vaccinium ovatum Phelps, M. 1972-3-19 Humboldt South end of Elk Ridge, approx. 2.5 mi. north of Briceland 457 Comment
  CAS-BOT-BC199420  Vaccinium parvifolium Joseph P. Tracy 1927-6-12 8133 Humboldt Horse Mountain 1432 Comment
  HSC48516  Vaccinium parvifolium Brad Klipfel 1974-9-17 581 Humboldt Horse Mountain area Comment
  UC22217  Vaccinium parvifolium Harley P. Chandler May 1901 1182 Humboldt Humboldt Bay North Coast Ranges 30 Comment
  UC32645  Vaccinium parvifolium J. Burtt Davy 1899-6-18 5608 Humboldt Bald Mt., near Korbel; North Coast Ranges Comment
  RSA114992  Valeriana sitchensis subsp. scouleri E. K. Balls, Lee W. Lenz 1955-5-15 20732 Humboldt 6.4 miles SW of Willow Creek along US Hwy 299 to Arcata. 457 Comment
  HSC73874  Valeriana sitchensis subsp. sitchensis M. A. Baker 1980-7-19 2988 Humboldt Near Bret Hole. 1814 Comment
  HSC31137  Vancouveria hexandra J. O. Sawyer 1970-6-24 2266 Humboldt S of Mill Creek Gap, FS 10N02 1433 Comment
  HSC68321  Vancouveria hexandra J. P. Smith 1973-5-26 6841 Humboldt Scotia Bluffs along the Eel River near Rio Dell Comment
  HSC99654  Vancouveria hexandra Overton, Butler 1979-7-24 9673 Humboldt Near Friday Camp, close to the town of Willow Creek. 1250 Comment
  UC854707  Vancouveria hexandra Elizabeth Parsons Hawver June 1915 Humboldt Carlotta Comment
  HSC12212  Vancouveria hexandra Gary J. Stebbins 1970-5-17 82 Humboldt Along Jolly Giant Creek up from HSU dorm parking lot 1.1 mi. 70 Comment
  HSC33018  Vancouveria hexandra J. D. Ackerman, A. M. Montalvo 1973-7-5 98 Humboldt 1 mi. W of Tish a Tang Creek on Grogan Hill Rd., E of Hoopa 1524 Comment
  UC527825  Vancouveria hexandra Ira L. Wiggins 1932-6-12 5865 Humboldt 2 mi e Bayside (bank of Jacoby Creek); bank of Jacoby Creek Comment
  CAS-BOT-BC76083  Vancouveria planipetala Doris K. Kildale 1926-5-2 1861 Humboldt Willow Creek Flat. 152 Comment
  HSC99440  Vancouveria planipetala K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-7 90 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  UC120019  Velezia rigida Chandler Humboldt Humboldt Bay Comment
  HSC102701  Ventenata dubia J. P. Smith 2013-6-16 13729 Humboldt Along State Route 36, just west of the 33.68 highway sign (milepost). 758 Comment
  CAS-BOT-BC528852  Veratrum californicum Doris K. Kildale 1927-7-1 3613 Humboldt Alton 20 Comment
  UC1222525  Veratrum californicum var. californicum Joseph P. Tracy 1950-6-25 18878 Humboldt nw slope Buck Mountain; Burr Valley 1066 Comment
  RSA12516  Veratrum insolitum Carl B. Wolf 1934-7-3 5920 Humboldt 9.5 miles form Martins Ferry on Orick Road. 305 Comment
  UC1222773  Verbascum blattaria Joseph P. Tracy 1950-7-9 18980 Humboldt along Trinity Highway Willow Creek Canyon Comment
  HSC56108  Veronica americana G. L. Clifton 1979-7-31 11860 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  HSC24848  Veronica anagallis-aquatica D. E. Anderson, Thomas W. Nelson 1972-5-9 Humboldt Just W of Weitchpec on the road to Pecwan Comment
  JEPS26268  Veronica arvensis Joseph P. Tracy 1906-6-10 2482 Humboldt Kneeland Prairie; Northern Coast Ranges, Kneeland Prairie 762 Comment
  HSC83999  Veronica arvensis L. P. Janeway 1983-5-1 254 Humboldt SW corner of old baseball field (S of new Science Building) 30 Comment
  UC147877  Veronica scutellata J. P. Tracy 1901-6-30 1196 Humboldt immediate vicinity of Eureka 0 Comment
  JEPS4464  Veronica scutellata W. L. Jepson 1902-6-24 1921 Humboldt between Eureka and Arcata (Expedition from Ukiah to the Hupa Indian Reservation) Comment
  HSC56064  Veronica serpyllifolia subsp. humifusa G. L. Clifton, Terry Griswold 1979-7-31 11708 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1805 Comment
  UC709401  Vicia americana var. americana Joseph P. Tracy 1939-7-9 16333 Humboldt Snow Camp 1402 Comment
  RSA34309  Vicia hirsuta C. Kistner 1935-5-5 s.n. Humboldt Arcata 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
  HSC15255  Vicia sativa subsp. nigra W. F. Nickel 1965-4-28 Humboldt On S side of Biological Science Building, near baseball field Comment
  HSC59115  Vicia sativa subsp. sativa Terry Roth 1979-5-29 93 Humboldt Arcata, corner of Alliance Rd. and Westwood Ct. Comment
  HSC15282  Vicia villosa subsp. villosa D. E. Anderson 1962-5-10 2210 Humboldt Lanphere's Comment
  HSC21757  Viola adunca N. J. Cole, D. E. Anderson 1965-4-13 16 Humboldt 1.5 mi. SE of Maple Creek Rd. jct. with Bald Hills Rd., SE of Korbel Comment
  HSC65883  Viola cuneata M. A. Baker 1980-6-16 1945 Humboldt Near Onion Mtn. 1280 Comment
  UC1762591  Viola cuneata Harley P. Chandler Jun 1901 1297 - Humboldt Hupa Indian Reservation North Coast Ranges 609 Comment
  HSC44358  Viola glabella Brad Klipfel 1974-5-27 398 Humboldt Horse Mtn. Comment
  HSC48741  Viola glabella Brad Klipfel 1973-6-10 66 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  UC183623  Viola glabella Joseph P. Tracy 1913-3-9 4018 Humboldt near Hydesville; Northern Coast Region 60 Comment
  UC1103563  Viola glabella Joseph P. Tracy 1940-8-25 16710 Humboldt near High Prairie; Bald Mountain 1036 Comment
  RSA249333  Viola hallii D. E. Anderson, Thomas Nelson, S. Dowty 1972-6-14 5614 Humboldt Mount Lassic and 2 smaller peaks to immediate east. 1768 Comment
  CAS-BOT-BC536941  Viola lobata Volney Rattan 1879-6-1 s.n. Humboldt Klamath Comment
  HSC32842  Viola ocellata Thomas W. Nelson, James Nelson 1973-5-28 946 Humboldt McKeown Ranch N of Dinsmore Comment
  UC35284  Viola ocellata Chesnut and Drew 1888-7-21 Humboldt South Fork Mountain Comment
  POM286592  Viola ocellata Lyman D. Benson 1929-7-16 1841 Humboldt Weott Ranger Station. S Fork Eel River. Comment
  SEINET202728 Image available Viola praemorsa J. P. Tracy 1951-5-20 19403 Humboldt Near Kneeland School House Kneeland Prairie 762 Comment
  UC668246  Viola praemorsa subsp. linguifolia Joseph P. Tracy 1936-6-17 14950 Humboldt nw slope of Buck Mountain 762 Comment
  UC1222514  Viola praemorsa subsp. praemorsa Joseph P. Tracy 1950-4-20 18607 Humboldt opposite Buck Mountain (Along Van Duzen River, Dinsmore's); Dinsmore's, Van Duzen River 762 Comment
  HSC84493  Viola praemorsa subsp. praemorsa R. Earing, C. Cavanaugh, C. Collins 1987-4-24 95 Humboldt 24 mi. E of Blue Lake on Titlow Hill Rd., ca. 1/2 mi. from Hwy. 299 854 Comment
  HSC32282  Viola purpurea subsp. purpurea D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5615 Humboldt Mt. Lassic and two smaller peaks to immediate E 1768 Comment
  UC183750  Viola sempervirens Joseph P. Tracy 1913-5-4 4054 Humboldt Kneeland Prairie; Northern Coast Ranges, Kneeland Prairie 762 Comment
  POM286646  Viola sempervirens Lyman D. Benson 1928-7-8 378 Humboldt Weott Ranger Station; Mt. Range: Seaward N Coast; Watershed: S Fork Eel River. 61 Comment
  CAS-BOT-BC203048  Vitis californica Henry M. Pollard 1945-9-4 s.n. Humboldt Near Camp Creek, Klamath River Canyon Comment
  HSC100699  Vitis californica Carl C. Marshall Jun 1886 313 Humboldt Hoopa. Comment
  UC1197981  Vitis californica Joseph P. Tracy 1926-9-6 7797 Humboldt Trinity River Valley Northern Coast Ranges (near the South Fork) 182 Comment
  UC668146  Vitis californica Joseph P. Tracy 1933-9-9 13077 Humboldt Garberville South Fork of Eel River 152 Comment
  HSC9839  Vulpia bromoides J. W. Johnson 1962-4-18 1266 Humboldt Along the lane below the W.M. Lanphere Home, Samoa Peninsula Comment
  RSA10149  Vulpia bromoides Joseph P. Tracy 1925-5-17 6980 Humboldt Trinity River Valley, near the South Fork. 183 Comment
  UC1145201  Vulpia bromoides Joseph P. Tracy 1948-6-10 18065 Humboldt Trinidad 3 Comment
  UCD93706  Vulpia microstachys H. S. Yates 1936-6-17 5712 Humboldt near Burr Valley. 914 Comment
  UC666826  Whipplea modesta Joseph P. Tracy 1937-7-2 15390 Humboldt Happy Camp Mountain Trinity Summit Range (ne of Hawkins Bar) 1280 Comment
  HSC12851  Woodwardia fimbriata C. E. Fellows 1970-11-28 320 Humboldt H.S.C. Campus, Arcata, E end old Science wing Comment
  UC582642  Wyethia angustifolia Joseph P. Tracy 1934-6-14 13217 Humboldt in open forest in serpentine belt Horse Mountain 1432 Comment
  UC1223295  Wyethia longicaulis Joseph P. Tracy 1950-7-1 18942 Humboldt near Clear Lake (summit where the Friday Ridge Road comes to the top of Grouse Mountain ridge); Grouse Mountain Comment
  SEINET11799554  Wyethia longicaulis J. P. Tracy 1950-1 18942 Humboldt near Clear Lake where Friday Ridge Rd comes to top of Grouse Mountain Ridge Comment
  BLMAR442  Xanthium spinosum Jennifer Anthony-Wheeler 2008-10-1 442 Humboldt Humboldt County, growing on Collenberg dairy, Mad River Road 7 Comment
  HSC25958  Xanthium strumarium Thomas W. Nelson 1970-10-31 286 Humboldt Eel River near N end of the Scotia Bluff. Comment
  HSC76424  Xerophyllum tenax Denis Kearns 1981-6-24 29 Humboldt Near Cedar Camp 1219 Comment
  RSA183622  Xerophyllum tenax D. E. Anderson 1965-4-29 3555 Humboldt Road from Fickle Hill to Maple Creek; Butler Valley area Comment
  UC1198220  Xerophyllum tenax Joseph P. Tracy 1937-8-12 15630 Humboldt Snow Camp 1402 Comment
  HSC73063  Zigadenus micranthus M. A. Baker 1980-6-16 1959 Humboldt Near Onion Mtn. 1280 Comment
  HSC99034  Zigadenus micranthus Cara Witte 2008-7-1 775 Humboldt Horse Mountain Botanical Area. Along 6N36. Approximately .6 miles southeast from Radio Towers. 1476 Comment
  RSA183643  Zigadenus micranthus D. E. Anderson 1965-6-1 3779 Humboldt Near Brush Mountain lookout 1216 Comment
  UC15054  Zigadenus micranthus var. micranthus Joseph Burtt Davy 1899-6-10 5391 Humboldt Hubbard's Station Comment
  HSC95187  Zostera japonica Gordon Leppig 2002-7-8 1782 Humboldt Indian Island, SW shore 0 Comment
  UCD150381  Zostera marina William Anderson and H. Mc. 1964-8-4 s.n. Humboldt Eel River Mouth. Comment



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