Search Results — 2000 specimen records retrieved (1388 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
  CAS-BOT-BC78059  Abies grandis Doris K. Kildale 1927-5-13 3128 Humboldt Green Point, Redwood Creek road Comment
  HSC13030  Abies grandis D. Santana, C. Kline Oct 1970 3 Humboldt HSC Campus Comment
  UC1173736  Abies grandis Joseph P. Tracy 1939-5-30 16298 Humboldt 1 mi below Dinsmore's (along bank of Van Duzen River); Van Duzan River 731 Comment
  HSC55173  Abies procera Gilbert Muth 1979-8-1 12174 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1677 Comment
  HSC73072  Abies procera Gail Newton 1980-7-24 1786 Humboldt Near Somes Mtn. 1615 Comment
  OBI35878  Abronia latifolia David J. Keil 1983-7-1 17287 Humboldt Ca. 5 mi NW of Petrolia along Mattole Rd Comment
  UCR32087  Abronia latifolia David J. Keil 1983-7-1 17287 Humboldt Pacific Coast, c. 5 mi. west of Petrolia along Mattole Road 225 Comment
  UCD112493  Acaena novae-zelandiae D. W. Cooper 1966-10-10 s.n. Humboldt SE of Forest Service Nursey, ca. 2 miles SE of Crannell and ca. 4 miles E of US Highway 101. Comment
  CAS-BOT-BC330544  Acer circinatum Joseph P. Tracy 1949-8-4 18424 Humboldt Near Mud Springs 1371 Comment
  UC165810  Acer circinatum J. P. Tracy 1906-4-15 2406 Humboldt near mouth Lindsey Creek (Mad River); , near mouth of Lindsey Creek 30 Comment
  CAS-BOT-BC331593  Acer macrophyllum Carl D. Duncan 1920-9-22 s.n. Humboldt Hoopa Valley Comment
  CAS-BOT-BC331592  Acer macrophyllum G. A. Coleman 1901-7-16 s.n. Humboldt Near Barberville Comment
  HSC100910  Acer macrophyllum Carl C. Marshall May 1886 208 Humboldt Banks of streams. Comment
  BLMAR746  Achillea millefolium Kate McGrath 2015-7-7 746 Humboldt Samoa Peninsula, Throughout the EPPA 1 Comment
  CDA9169  Achillea millefolium T. C. Fuller 1958-6-17 613 -58 Humboldt Wildcat Ridge near Bunker Hill. 0 Comment
  HSC58064  Achillea millefolium G. L. Clifton, Griswold 1979-8-1 11941 Humboldt Near Mill Creek Lakes, close to the town of Hoopa. 1692 Comment
  UC1222918  Achillea millefolium Joseph P. Tracy 1941-8-24 17044 Humboldt near, McKay Camp; South Fork Mountain 1676 Comment
  HSC102055  Achlys californica M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-13 960 Humboldt Along trail from Rustic Camp to Patterson Meadows 1534 Comment
  UC1225749  Achlys californica Joseph P. Tracy 1946-6-23 17594 Humboldt Kneeland Prairie 762 Comment
  CAS-BOT-BC400020  Achlys triphylla Doris K. Kildale 1928-5-19 5158 Humboldt Chalk Mountain 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
  CAS-BOT-BC400026  Achlys triphylla Mrs. E. C. Van Dyke 1931-6-30 s.n. Humboldt Divide west of Willow Creek Comment
  HSC34876  Achlys triphylla Thomas W. Nelson 1975-5-5 1778 Humboldt Beside Hwy. 101, 4 mi. S of the Salmon Creek bridge Comment
  CAS-BOT-BC210655  Achnatherum lemmonii Joseph P. Tracy 1930-7-10 8866 Humboldt Brannan Mountain 1219 Comment
  UC1222924  Achyrachaena mollis Joseph P. Tracy 1950-6-15 18811 Humboldt n 7 mi at Jenk's Ranch Harris; Mail Ridge Comment
  SEINET15325313  Acmispon brachycarpus H. P. Chandler 1901-1 1308 Humboldt Hupa Indian Reservation Comment
  SD53240  Acmispon parviflorus Darley F. Howe 1962-5-22 3307 Humboldt 0.7 miles east of Orick on Bald Mountain Road 395 Comment
  HSC55084  Aconogonon davisiae G. L. Clifton, Griswold 1979-7-31 11748 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa. 1845 Comment
  POM312840  Acorus calamus Malcolm A. Nobs, S. Galen Smith 1949-8-9 1242 Humboldt Marshy pond on south side of the town of Blue Lake. Comment
  SEINET12094122  Actaea rubra F. H. Utech 1988-1 88 -268 Humboldt 14 mi W of Bridgeville enroute to Carlotta on CA 36, Van Duzen County Park, Pamplin Grove 50 Comment
  CAS-BOT-BC391594  Actaea spicata var. arguta Carl B. Wolf 1937-8-11 9148 Humboldt North Coast Range, Van Duzen River, 2 7/10 mi. W. of Dinsmores 457 Comment
  HSC56445  Adenocaulon bicolor Griswold, Butler 1979-7-12 7195 Humboldt Near Groves Prairie, close to the town of Willow Creek. 1256 Comment
  SBBG7504  Adenocaulon bicolor H. and M. Dearing 1939-6-20 3687 Humboldt W of Willow Crk Comment
  CAS-BOT-BC62289  Adiantum aleuticum T. G. W. 1924-7-1 s.n. Humboldt Arcata Comment
  JEPS336  Adiantum aleuticum W. L. Jepson 1932-7-26 16412 Humboldt Bull Creek Comment
  RSA259562  Adiantum aleuticum D. E. Anderson, J. P. Smith 1971-6-28 j- 1250 Humboldt 2.5 miles South of Blue lake along Mad River Comment
  UC62739  Adiantum aleuticum P. E. Goddard 1901-7-12 74 Humboldt Hupa Comment
  UC62708  Adiantum jordanii Joseph Burtt Davy and Walter C. Blasdale 1899-6-13 5512 Humboldt near Pepperwood Pepperwood Comment
  HSC43842  Aesculus californica Maralyn O'Meara 1974-5-18 498 Humboldt Fisher Rd. near Carlotta Comment
  UC154005  Agastache urticifolia Joseph P. Tracy 1908-6 2802 Humboldt opposite Buck Mountain (Valley of Van Duzen River); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  UC1125463  Agoseris grandiflora var. grandiflora H. L. Person 1932-7-20 19459 Humboldt Fieldbrook Eureka Quadrangle, Fieldbrook Comment
  OBI6922  Agoseris grandiflora var. leptophylla Joseph P. Tracy 1942-7-18 17276 Humboldt N end fo town. Garberville Comment
  SEINET6998444  Agoseris heterophylla Wanda P. Vestal, A. G. Vestal 1937-6-22 s.n. Humboldt Kneeland prairie, about 4 miles southeast of Kneeland. Comment
  UC582744  Agoseris heterophylla var. heterophylla Joseph P. Tracy 1930-6-21 8775 E Humboldt Larrabee Valley; Northern Coast Ranges 701 Comment
  UC165755  Agoseris heterophylla var. heterophylla J. P. Tracy 1906-5-13 2455 Humboldt sand hills at Samoa; Ocean Beach Comment
  UC29354  Agoseris heterophylla var. heterophylla H. N. Bolander 1867-1 6494 Humboldt Red Mountains Comment
  UC249843  Agoseris hirsuta Joseph P. Tracy 1923-6-20 6316 Humboldt White Thorn Valley Northern Coast Ranges, White Thorn Valley 304 Comment
  UC1152034  Agrostis capillaris Joseph P. Tracy 1951-6-26 19547 Humboldt Snow Camp Meadow Comment
  UCD53125  Agrostis diegoensis Joseph P. Tracy 1950-8-8 19292 Humboldt Croghan Hole, on Trinity Summit. 1676 Comment
  CAS-BOT-BC127292  Agrostis exarata Joseph P. Tracy 1935-5-25 13857 1/2 Humboldt Fort Seward. 106 Comment
  CAS-BOT-BC127293  Agrostis exarata H. E. Parks 1935-6-1 5607 Humboldt Spruce Cove, Trinidad. Comment
  CAS-BOT-BC127297  Agrostis exarata Doris K. Kildale 1927-7-23 3796 Humboldt Near Lasseeks [Lassics] Peaks. Haaglin [Hoagland] Lake. Comment
  RSA87372  Agrostis exarata F. W. Peirson 1941-7-28 13116 Humboldt Patrick's Point State Park Comment
Read comments
Jun 4 2015
  UC191415  Agrostis exarata Joseph P. Tracy 1902-7-4 1757 Humboldt Eureka Northern Coast Region 0 Comment
  UC249865  Agrostis exarata Joseph P. Tracy 1924-7-13 6729 Humboldt in bog Northern Coast Region, Big Lagoon 6 Comment
  CAS-BOT-BC139695  Agrostis gigantea J. P. Tracy 1902-7-4 1758 Humboldt Immediate vicinity of Eureka. 152 Comment
  HSC37235  Agrostis hallii Lon Hall 1975-6-19 400 Humboldt About 2 mi. N of Shelter Cove Rd. on Horse Mtn. Rd. 549 Comment
  RSA129613  Agrostis hallii H. S. Yates 1936-6-16 16653 Humboldt 1 mile NE of Samoa 3 Comment
  UC526884  Agrostis hallii Joseph P. Tracy 1929-7-4 8610 Humboldt French Camp Northern Coast Ranges 1066 Comment
  UCD52689  Agrostis hallii P. B. Kennedy 1923-8-2 s.n. Humboldt Bluff Creek Camp, Klamath River. Comment
  UCD52715  Agrostis hallii R. Tofsrud 1949-7-1 s.n. Humboldt between Scotia and Capetown. Comment
  UC589898  Agrostis pallens H. S. Yates 1936-6-16 5685 Humboldt near Bayside; Eureka Quadrangle 9 Comment
  SACT000138  Agrostis palustris S. Smith, Malcolm Nobs 1949-8-3 Humboldt Borders of irrigation ditch Comment
  UC526664  Agrostis scabra Joseph P. Tracy 1932-7-16 10608 Humboldt Corral Prairie Klamath Mountains, Trinity Summit 1524 Comment
  HSC8811  Agrostis stolonifera D. J. McVean 1965-4-13 17 Humboldt 900 block of Shirley Blvd. Arcata Comment
  SEINET3917179  Agrostis stolonifera Thomas Nelson, James Nelson 1976-7-28 3046 Humboldt West of alder Springs along 2S08.; 0 1554 Comment
  UC526889  Agrostis stolonifera Joseph P. Tracy 1927-7-16 8253 Humboldt Elk River, mouth Northern Coast Region 6 Comment
  SBBG21792  Ailanthus altissima D. Myrick 1964-7-26 978 Humboldt Hwy 299, ca. 15 mi E of Arcata 762 Comment
Read comments
Feb 4 2016
  RSA183535  Aira caryophyllea G. Bos 1965-5-15 256 Humboldt 8 miles west of Berry Summit along U.S. 299. 762 Comment
  RSA44452  Aira caryophyllea Henry M. Pollard 1948-7-18 s.n. Humboldt Orleans Comment
  UC1103306  Aira caryophyllea Joseph P. Tracy 1933-6-6 12502 Humboldt Trinidad Northern Coast Region (on bluff facing ocean) 60 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
  UCD55699  Aira caryophyllea A. H. Murphy 1951-6-1 51 Humboldt O. O. Davis Ranch. South slope of South Fork Mtn., 3 miles E of Low Gap, in Erickson Glade. Comment
  CAS-BOT-BC138332  Aira caryophyllea var. caryophyllea Doris K. Kildale 1927-6-25 3560 Humboldt Fearren's Ranch between Thorn and Shelter Cove. Comment
  CAS-BOT-BC138337  Aira caryophyllea var. caryophyllea W. R. Dudley 1899-6-1 s.n. Humboldt Eureka Penninsula. Comment
  CAS-BOT-BC138333  Aira caryophyllea var. caryophyllea Henry M. Pollard 1948-7-23 s.n. Humboldt Reece Point near Orleans. Comment
  CAS-BOT-BC138196  Aira praecox Joseph P. Tracy 1925-6-13 7099 Humboldt Northern Coast Ranges. Eureka. 60 Comment
  RSA183573  Aira praecox R. I. Bonn 1965-5-7 22 Humboldt Four miles west of Arcata on Lamphere Rd. Comment
  UC194898  Alisma plantago-aquatica Joseph P. Tracy 1916-6-19 4724 Humboldt Dobbyn Creek Northern Coast Ranges 182 Comment
  POM228735  Allium amplectens C. C. Harris, S. K. Harris 1936-6-24 645 Humboldt At point where the road from Bridgeville to Dunsmore crosses the Little Van Duzen River. 710 Comment
  CAS-BOT-BC462970  Allium bolanderi Henry M. Pollard 1948-8-4 s.n. Humboldt Orleans Mt. Trail 914 Comment
  HSC76439  Allium bolanderi var. bolanderi Denis Kearns 1981-6-24 8 Humboldt Near Cedar Camp 1219 Comment
  HSC43977  Allium falcifolium B. Klipfel 1974-6-25 435 Humboldt Horse Mtn., near the towers Comment
  RSA249434  Allium falcifolium D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5600 Humboldt Mt. Lassic and 2 smaller peaks to immediate E. 1768 Comment
  CHSC33162  Allium hoffmanii Marc Baker 1980-7-11 2799 Humboldt Near Red Mountain. 226 mm from the left and 235 mm from the bottom on the quad map. 225 Comment
  HSC67367  Allium hoffmanii Thomas W. Nelson, James Nelson 1980-6-10 5411 Humboldt Along Swayback Ridge Rd., 2.5 mi. N of junction with FS Rd. 1S07 1463 Comment
  UC666906  Allium membranaceum Joseph P. Tracy 1929-6-3 8599 Humboldt Trinity River Valley at Willow Creek Trinity River Valley, Willow Creek 152 Comment
  UC666938  Allium siskiyouense Joseph P. Tracy 1933-7-16 12789 Humboldt along summit near Blake Lookout; Northern Coast Ranges, South Fork Mountain 1706 Comment
  UC503096  Alnus rhombifolia Joseph P. Tracy 1930-11-2 9243 Humboldt Camp Grant Northern Coast Ranges, Eel River (along river) 60 Comment
  HSC89484  Alnus rubra P. A. Daly 1984-5-13 22 Humboldt Along trail at Trinidad Head 61 Comment
  HSC96512  Alnus rubra Gordon Leppig 1999-7-9 1179 Humboldt Big Lagoon County Park; Big Lagoon Bog 3 Comment
  UCR27989  Alnus rubra A. C. Sanders 1981-8-6 2299 Humboldt Near Orick, 1.6 mi west of Hwy 101 on Davison Road toward Gold Bluffs Beach Comment
  SEINET12030339  Alnus rubra F. H. Utech 1986-1 86 -415 Humboldt between Capetown & Ferndale on Mattole Creek, SW slope of Bear River Ridge 100 Comment
  RSA152374  Alopecurus geniculatus Joseph P. Tracy 1938-7-15 16063 Humboldt Mouth of Elk River, near Eureka. Comment
  SEINET11674220  Alopecurus geniculatus J. P. Tracy 1951-1 19524 Humboldt back of Everett Beck house (formerly George Fray) bed of former Goose Lake, Hydesville Comment
  JEPS79807  Alopecurus saccatus Joseph P. Tracy 1942-6-2 17096 Humboldt Alton 30 Comment
  UC1116222  Alopecurus saccatus Joseph P. Tracy 1942-6-2 17096 Humboldt Alton 30 Comment
  UC132199  Amaranthus retroflexus Joseph P. Tracy 1907-8-20 2599 Humboldt near hydesville; Northern Coast Region 60 Comment
  SEINET11855057  Ambrosia artemisiifolia J. P. Tracy 1950-1 19313 Humboldt Frank Graham's place. Trinity River Valley, at Willow Creek 152 Comment
  BLMAR296  Ambrosia chamissonis Jennifer Anthony-Wheeler 2002-6-25 296 Humboldt King range, Growing in dune mat 3 Comment
  CAS-BOT-BC13711  Ambrosia chamissonis David D. Keck 1935-6-16 3385 Humboldt Mouth of Little River. Comment
  HSC5663  Ambrosia chamissonis D. E. Anderson 1961-9-2 1771 Humboldt 3 mi. S of Cape Mendocino. 3 Comment
  HSC55618  Amelanchier pallida Overton, Butler 1979-7-23 9521 Humboldt Near Titlow Hill, close to the town of Willow Creek. 1280 Comment
  CAS-BOT-BC143014  Amelanchier utahensis H. E. McMinn 1922-8-5 343 Humboldt Along Van Duzen River Comment
  UC14217  Amelanchier utahensis Chesnut and Drew 1888-7-10 Humboldt Jarnigan's Comment
  CAS-BOT-BC137867  Ammophila arenaria Dziekanowski; Dunn; Bennett 1976-8-6 2504 Humboldt In the vicinity of a state park on the beach opposite McKenleyville. 3 Comment
  CDA18243  Ammophila arenaria G. D. Barbe, T. C. Fuller 1974-6-19 1881 Humboldt North Coast Ranges; Mad River mouth, beach S of river, at end of Iversen Lane, Tyee City. 7 Comment
  HSC17823  Anagallis arvensis J. F. Knezevich 1968-5-14 434 Humboldt 13 mi. S of Ferndale at Cape Mendocino 0 Comment
  HSC67526  Anagallis arvensis J. P. Smith 1970-6-7 3806 Humboldt 0.6 mi. N of Luffenholtz Beach, along Hwy. 101, near Trinidad. Comment
  RSA416577  Anaphalis margaritacea B. C. Templeton 1931-10-15 s.n. Humboldt Eureka Comment
  UCR48597  Anaphalis margaritacea R. D. Goeden, Don W. Ricker 1987-9-2 7 A Humboldt Loleta, along Cannibal Road 8 Comment
  CAS-BOT-BC391782  Anemone deltoidea W. R. Dudley 1899-6-21 s.n. Humboldt Below south fork of Eel River Comment
  CAS-BOT-BC391783  Anemone deltoidea W. R. Dudley 1899-6-19 s.n. Humboldt Scotia--Shady Run. Comment
  CAS-BOT-BC391787  Anemone deltoidea Joseph P. Tracy 1932-7-13 10489 Humboldt Klamath Mountains, Trinity Summit. Woods near Corral Prairie 1524 Comment
  HSC98600  Anemone deltoidea Cara Witte 2008-6-15 736 Humboldt Along National Forest 1. 3 miles north from intersection with Forest Service Road 6N01B. 1456 Comment
  POM365632  Anemone deltoidea Unspecified s.n. Humboldt [No location data on label] Comment
  CAS-BOT-BC391925  Anemone lyallii Doris Kildale 1931-5-10 10576 Humboldt Snow Camp Comment
  UC503041  Anemone oregana Joseph P. Tracy 1928-4-1 8408 Humboldt n end Big Lagoon; Nort Coast Region 152 Comment
  HSC55992  Angelica arguta Overton, Butler 1979-7-31 11422 Humboldt Near Water Dog Lakes, close to the town of Hoopa 1830 Comment
  UC582635  Angelica hendersonii Joseph P. Tracy 1937-8-22 15674 Humboldt Table Bluff 91 Comment
  HSC71276  Angelica lucida J. M. DiTomaso 1980-6-8 1577 Humboldt Next to Hwy 101 between Arcata and Eureka, 1.5 mi. S of Indianola Rd. Comment
  HSC71326  Angelica lucida J. M. DiTomaso 1980-6-21 1607 Humboldt Clam beach. Comment
  BLMAR426  Angelica tomentosa Clara Sander 2004-9-1 426 Humboldt Titlow Hill, Horse Mt area on Titlow hill road 1554 Comment
  HSC70683  Angelica tomentosa T. A. Ranker Jul 1980 131 Humboldt Along Hwy 36, 36.7 mi E of junction with Hwy 101 Comment
  JEPS14219  Angelica tomentosa Joseph P. Tracy 1938-9-5 16145 Humboldt Northern Coast Ranges, Willow Creek Canyon Willow Creek Canyon; Northern Coast Ranges, Willow Creek Canyon 457 Comment
  CAS-BOT-BC271494  Anisocarpus madioides Mark Bransom; Daniel Brown; Ron Hildebrandt; Nina Meiselman 1986-4-19 23 Humboldt 1 1/2 mi. west of Burnt Ranch on R. 299, Burnt Ranch Campground Comment
  HSC5993  Anisocarpus madioides Francis Winter 1960-4-24 Humboldt 1 mi. W of Hoopa on Bair Rd. 305 Comment
  HSC39226  Antennaria suffrutescens D. E. Anderson, J. P. Smith 1971-7-6 1287 Humboldt Horse Mtn. Comment
  HSC49816  Anthoxanthum occidentale R. York 1979-4-21 243 Humboldt Behind the town of Korbel Comment
  HSC8937  Anthoxanthum odoratum S. R. Johnson 1965-4-16 37 Humboldt 1 mi. N of Luffenholtz Beach Comment
  HSC8939  Anthoxanthum odoratum N. R. Waite 1965-5-19 40 Humboldt W edge of Humboldt State University campus. Comment
  HSC8947  Anthoxanthum odoratum T. L. Ackerman 1964-4-12 34 Humboldt One mi. up a logging road N from an elementary school near Freshwater Corners Comment
  HSC8949  Anthoxanthum odoratum R. T. Forester 1963-4-30 52 Humboldt 0.25 mi. N of Fairhaven on Samoa Rd. Comment
  UC1198741  Aphanes occidentalis Joseph P. Tracy 1919-4-27 5129 Humboldt Humboldt Bay Northern Coast Region (Ocean Beach) Comment
  HSC18048  Aquilegia formosa var. truncata Francis Winter 1960-4-23 Humboldt E end of bridge crossing Mad River, near Maple Creek 152 Comment
  UC552301  Arabidopsis thaliana Joseph P. Tracy 1935-4-20 13788 Humboldt Trinity River Valley, at Willow Creek Willow Creek; Northern Coast Ranges, Trinity River Valley, Willow Creek 152 Comment
  HSC57210  Arabis holboellii var. retrofracta Terry Griswold, Marvin Butler 1979-7-12 7239 Humboldt Near Cedar Creek, close to the town of Willow Creek 1158 Comment
  HSC98836  Arabis subpinnatifida Cara Witte 2008-6-2 668 Humboldt 1/2 mile southeast of intersection National Forest 1 and 5N01. 1570 Comment
  UC902020  Arabis subpinnatifida Joseph P. Tracy 1949-7-19 18389 Humboldt Grouse Mountain 1584 Comment
  HSC76286  Aralia californica Teresa Prendusi 1981-7-23 364 Humboldt Near Black Mtn. 890 Comment
  OBI33242  Aralia californica David J. Keil 1983-7-1 17260 Humboldt Along Bull Crk Flats Rd 1.4 mi W of US 101. Humboldt Redwoods State Park Comment
  SJSU2568  Aralia californica H. L. Buckalew 1962-7-2 Humboldt junction of Willow Creek & E Fork Willow Creek on Hwy 299, eastern Humboldt County Comment
  CDA38203  Aralia californica T. Gallion & M. S. Bergseng 1959-7-23 2816 Humboldt Red Gap Road, 3 miles east of Hoopa. 0 Comment
  CAS-BOT-BC128695  Arbutus menziesii Doris K. Kildale 1927-5-7 3109 Humboldt Elk Ridge near Eel Rock Comment
  UC585942  Arctostaphylos Joseph P. Tracy 1935-6-23 13992 Humboldt French Camp Ridge 1066 Comment
  UC902044  Arctostaphylos Joseph P. Tracy 1949-8-4 18406 Humboldt ridge top 1 mi w Mud Springs; Trinity Summit 1158 Comment
  BLMAR276  Arctostaphylos canescens Jennifer Anthony-Wheeler 1999-7-30 276 Humboldt Lacks Creek 1219 Comment
  CAS-BOT-BC25214  Arctostaphylos canescens subsp. canescens Henry M. Pollard 1944-9-1 s.n. Humboldt Near Orleans Comment
  JEPS118166  Arctostaphylos canescens subsp. canescens Dean W. Taylor 2009-7-14 20676 Humboldt vicinity Huestis Prairie (watershed Redwood Creek) 975 Comment
  CAS-BOT-BC23762  Arctostaphylos columbiana H. E. Parks 1931-12-1 4950 Humboldt Hobson's, Trinidad 60 Comment
  CAS-BOT-BC23772  Arctostaphylos columbiana Joseph P. Tracy 1948-3-13 17955 Humboldt Table Bluff 91 Comment
  CAS-BOT-BC23795  Arctostaphylos columbiana C. Hart Merriam 1920-9-19 s.n. Humboldt Berry Mt. between Trinity River and Redwood Creek Comment
  UC1121466  Arctostaphylos columbiana A. E. Wieslander 1939-9-2 994 Humboldt 2 mi sw Big Lagoon (17 mi s of Orick); Rocky Pt. Quadrangle 7 Comment
  UC1198651  Arctostaphylos columbiana Joseph P. Tracy 1936-2-22 13137 Humboldt vicinity of Trinidad Northern Coast Region 60 Comment
  UC549498  Arctostaphylos columbiana J. E. Adams 1935-5-12 1048 Humboldt Patrick's Point Comment
  UC718025  Arctostaphylos columbiana Carl B. Wolf 1934-6-30 5844 Humboldt 5 1/2 mi from Shelter Cove (on road to Briceland) 152 Comment
  RSA12449  Arctostaphylos columbiana var. columbiana C. B. Wolf 1934-6-30 5844 Humboldt 5 1/2 mi. from Shelter Cove on rd. to Briceland. 152 Comment
  RSA31954  Arctostaphylos columbiana var. tracyi A. A. Heller 1937-6-12 15918 Humboldt Along the road parallelling the ocean at Bishop ine Lodge, 3 miles north of Trinidad. Comment
  UCSB11336  Arctostaphylos glandulosa Zinke, P. 1950-10-9 Humboldt King Peak 1219 Comment
  SD42559  Arctostaphylos hispidula Carl B. Wolf 1937-8-13 9226 Humboldt 8.0 miles east of Hoopa Valley on new road towards Trinity summit. 1220 Comment
  RSA632808  Arctostaphylos knightii Jon E. Keeley 1996-10-13 27773 Humboldt Bald Hills Road, eastern end of Redwood National Park, 25 km west of Highway 96, north of Eureka. 700 Comment
  HSC68217  Arctostaphylos manzanita J. P. Smith, J. O. Sawyer 1975-4-6 8051 Humboldt 3 mi. N of Whitehorn, across from the CA Dept. of Forestry Fire Station Comment
  RSA633014  Arctostaphylos manzanita Jon E. Keeley 1996-10-13 27807 Humboldt Salyer Rest Area, east of Salyer, east of Willow Creek on Highway 299. 200 Comment
  JEPS38938  Arctostaphylos manzanita subsp. manzanita Joseph P. Tracy 1933-4-2 10949 Humboldt Willow Creek Trinity River Valley 152 Comment
  JEPS38983  Arctostaphylos nevadensis Joseph P. Tracy 1927-6-12 8132 Humboldt Horse Mountain 1432 Comment
  UCD52684  Arctostaphylos nevadensis Joseph P. Tracy 1939-8-16 16405 Humboldt Horse Mountain. 1432 Comment
  CAS-BOT-BC40066  Arctostaphylos nevadensis subsp. knightii Roman Gankin; W. R. Hildreth 1967-10-26 1179 Humboldt French Camp Ridge21.4 miles east of US 101 on Bald Hills Road (from Orick) Comment
  HSC99037  Arctostaphylos nevadensis subsp. nevadensis C. Witte 2008-10-18 1058 Humboldt Along National Forest 1. 1/4 mile south of intersection with 6N35. Near Horse Mountain Botanical Area. 1480 Comment
  HSC7730  Arctostaphylos uva-ursi Norman H. Moe 1962-3-17 Humboldt Lanphere's Place Comment
  UC1196878  Arctostaphylos uva-ursi J. P. Tracy 1909-10-7 3111 Humboldt Gans Prairie 457 Comment
  RSA286310  Arctostaphylos uva-ursi var. coactilis R. F. Thorne 1974-7-29 45082 Humboldt Samoa Dunes. Comment
  RSA337436  Arctostaphylos uva-ursi var. coactilis R. F. Thorne, Percy C. Everett, K. Thorne 1965-8-5 35148 Humboldt Samoa Dunes. 3 Comment
  CAS-BOT-BC48259  Arctostaphylos viscida subsp. viscida Joseph P. Tracy 1939-4-29 16265 Humboldt Orleans 121 Comment
  CHSC79250  Arctotheca calendula G. D. Barbe; T. C. Fuller 1989-6-8 4321 Humboldt In pastures of the Larry Pries dairy, 3.4 miles west of Main Street, on Centerville Beach Road, Ferndale. Comment
  UC161045  Arenaria serpyllifolia subsp. serpyllifolia Joseph P. Tracy 1911-7-8 3450 Humboldt (Tributary of trinity river) near its mouth Northern Coast Ranges,Willow Creek 152 Comment
  RSA86727  Aristida oligantha Joseph P. Tracy 1933-8-27 13000 Humboldt Robertsons Ranch, vicinity of Garberville. 305 Comment
  HSC48024  Arnica cernua Brad Klipfel 1974-6-25 423 Humboldt Horse Mtn. Comment
  HSC81874  Arnica cernua Barry Silver 1986-4-13 513 Humboldt Bair Road, 6.4 mi. WSW of Hoopa Comment
  HSC40999  Arnica discoidea J. O. Sawyer 1975-10-17 2709 Humboldt Along Big Hill Rd. 915 Comment
  HSC72680  Arnica discoidea J. P. Smith 1977-7-3 9244 Humboldt Road to Onion Mtn., 1/4 mile from its junction with USFS Rd. 10N41 762 Comment
  UC1199252  Arnica discoidea Joseph P. Tracy 1918-7-5 5001 Humboldt White Thorn Valley 304 Comment
  HSC4695  Arnica discoidea Lincoln Constance 1934-7-19 910 Humboldt Near the summit of Grasshopper Mtn.; south of Bull Creek Flat, south fork of the Eel River 915 Comment
  RSA417143  Arnica discoidea H. M. Pollard 1947-8-8 s.n. Humboldt South River Road, south of Orleans Comment
  SEINET6999602  Arnica discoidea J. P. Tracy 1911-7-11 3513 Humboldt Hoopa Valley, hills near Supply Creek. Comment
  HSC58599  Arnica parryi G. L. Clifton, Griswold 1979-7-25 10764 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1814 Comment
  SEINET11837491  Arnica tomentella J. P. Tracey 1950-1 19273 Humboldt 2 mi E of town, on trail to Croghan Hole. Trinity Summit, near Box Camp 1524 Comment
  CAS-BOT-BC94772  Arrhenatherum elatius R. C. Wenk; P. Hopkinson; M. Hammond; S. Spiegal 2008-6-6 832 Humboldt Humboldt Redwoods State Park. Look Prairie, 0.5 air miles N of Mattole Road, about 3 air miles W of Highway 101 243 Comment
  HSC48525  Arrhenatherum elatius Thomas W. Nelson, Jane P. Nelson 1978-7-3 4412 Humboldt McKeown Ranch, N of Dinsmore Comment
  RSA0047108  Arrhenatherum elatius Rebecca Wenk, P. Hopkinson, M. Hammond, S. Spiegal 2008-6-6 832 Humboldt Humboldt Redwoods State Park. Look Prairie, 0.5 air miles north of Mattole Road, about 3 air miles west of Highway 101. 244 Comment
  UC535739  Artemisia dracunculus Eleanor Armstrong 1190 Humboldt Richardson Grove Comment
  RSA15563  Artemisia pycnocephala C. B. Wolf 1927-8-29 1206 Humboldt Devils' Gate, S of Cape Mendocino. Comment
  UCD129341  Artemisia pycnocephala Linda M. Barker 1976-7-5 1633 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  HSC5042  Artemisia suksdorfii H. E. Parks May 1940 24178 Humboldt Little River Comment
  UC154231  Aruncus dioicus var. pubescens Joseph P. Tracy 1909-6-13 2999 Humboldt near mouth of Warren Creek (hillside on Mad River); Northern Coast Region, Humboldt Bay Region 0 Comment
  HSC58082  Asarum caudatum G. L. Clifton, Griswold 1979-8-1 11986 Humboldt Near Mill Creek Lakes, close to the town of Hoopa 1707 Comment
  HSC99362  Asarum caudatum K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-6-24 11 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  HSC100704  Asarum hartwegii Carl C. Marshall Apr 1887 389 Humboldt Hoopa Valley, rear of Captain's quarters. Comment
  UC154170  Asclepias cordifolia Harley P. Chandler June, 1901 1347 Humboldt Hupa Indian Reservation North Coast Ranges 152 Comment
  POM127914  Asclepias speciosa P. E. Goddard 1906-06 688 Humboldt Blocksburg Comment
  CAS-BOT-BC65939  Aspidotis densa Harley P. Chandler 1901-6-1 1380 Humboldt Hupa Indian Reservation 152 Comment
  HSC73807  Aspidotis densa M. A. Baker 1980-6-16 1927 Humboldt Near Monks Camp. 1097 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
  UCD137278  Aspidotis densa Gordon Leppig 1998-7-1 861 Humboldt Ammon Ridge Rd., 1 k east of Titlow Hill Rd. 1432 Comment
  RSA20814  Aster chilensis C. B. Wolf 1937-9-9 9312 Humboldt N Coast Range, Wildcat ridge, 6.3 miles S of Ferndale. 305 Comment
  UC502992 Image available Astragalus agnicidus Henry Tosten 1931-6-7 Humboldt 4 mi s Miranda (near Bear Buttes, on Tosten and Pierce Ranch); ; near Bear Buttes, Humboldt Co. 762 Comment
  UC205596  Astragalus gambelianus Joseph P. Tracy 1919-5-31 5147 Humboldt near Willow Creek (Valley of Trinity River, Northern Coast Ranges); Northern Coast Ranges, Valley of Trinity River 152 Comment
  HSC100358  Astragalus umbraticus J. McRae 1996-7-25 Humboldt Orleans Ranger District, off F.S. Rd. 11N16-C at mile post 1. 707 Comment
  RSA0089849  Astragalus umbraticus Dean Wm. Taylor 2009-7-14 20674 Humboldt vicinity Lake Prairie, reached via Guy Kerr Ranch Road off Snow Camp Road. 1133 Comment
  CAS-BOT-BC69525  Athyrium filix-femina subsp. cyclosorum Ira L. Wiggins 1957-6-19 14127 Humboldt 2.5 mi. w. of Pepperwood. Comment
  POM319593  Athyrium filix-femina subsp. cyclosorum Patricia Wilder 1968-8-21 4383 Humboldt Bog in Big Lagoon park, just west of Highway 101 2 Comment
  HSC10343  Athyrium filix-femina var. cyclosorum H. S. Logsdon 1964-5-10 3 Humboldt 4 mi. NE of Orick at Boye's Prairie Comment
  HSC30350  Athyrium filix-femina var. cyclosorum Dale R. Gradek 1974-5-28 90 Humboldt 0.25 mi. E of Hwy. 101 on Jolly Giant Creek 61 Comment
  HSC35725  Athyrium filix-femina var. cyclosorum Thomas W. Nelson 1975-1-16 1748 Humboldt E of HSU campus Comment
  HSC66402  Atriplex leucophylla Ruby Van Deventer 1962-5-26 Humboldt Beach at Big Lagoon. 11 Comment
  SEINET4175775  Avena barbata Joseph P. Tracy 1906-4-29 2426 Humboldt Edge of field near Bucksport Comment
  UC526858  Avena barbata Joseph P. Tracy 1930-6-29 8825 Humboldt Buck Mountain Northern Coast Ranges (lower foothills of nw slope) 762 Comment
  UCD56296  Avena fatua A. H. Murphy 1951-4-2 s.n. Humboldt Side of Highway 101 / mile south of Phillipsville. Comment
  JEPS21316  Baccharis glutinosa W. L. Jepson 1932-7-27 16425 Humboldt Bull Creek 106 Comment
  HSC13133  Baccharis pilularis subsp. consanguinea Steve Dorei 1970-10-9 33 Humboldt HSC campus, Arcata, near Fisheries water tank on Union St. Comment
  HSC29875  Baccharis pilularis subsp. consanguinea Thomas W. Nelson 1971-11-11 601 Humboldt Foot of Murray Rd., McKinleyville. Comment
  HSC64813  Barbarea verna J. P. Smith, Steve Selva 1970-6-30 4125 Humboldt Comment
  HSC5192  Bellis perennis D. E. Anderson 1961-8-11 1729 Humboldt East of Humboldt State College campus Comment
  HSC89490  Bellis perennis P. A. Daly 1986-2-28 64 Humboldt Trinidad Head, along trail 61 Comment
  CAS-BOT-BC48155  Bensoniella oregona Joseph P. Tracy 1939-7-9 16327 Humboldt Snow Camp in moist ground around meadow. 1402 Comment
  CAS-BOT-BC48157  Bensoniella oregona R. Bacigalupi; L. Constance; J. P. Tracy; R. Moran; R. L. Rodriguez; S. J. Carlquist 1951-6-14 3410 Humboldt Bald Mountain ridge - in bog, edge of forest at High Prairie, on long high ridge between Mad River and Redwood Creek 1066 Comment
  RSA167308  Bensoniella oregona Joseph P. Tracy 1951-6-14 19416 Humboldt East side of Snow Camp Meadows Comment
  UC902073  Bensoniella oregona Joseph P. Tracy 1949-8-11 18454 Humboldt Snow Camp 1432 Comment
  UC1198388  Berberis aquifolium Joseph P. Tracy 1924-4-27 6641 Humboldt along hwy near Ruby Creek Willow Creek 609 Comment
  CAS-BOT-BC75682  Berberis nervosa C. B. Wolf 1931-8-29 2372 Humboldt Near summit of Orick Hill on the road to Weitchpec. 304 Comment
  HSC31569  Berberis nervosa Glenn McGourty 1974-5-11 39 Humboldt Timber trail off Maple Creek Rd. in Kneeland Comment
  HSC3353  Berberis nervosa Dan O'Brien 1962-5-9 Humboldt 4.5 mi. E on Fickle Hill Rd. Comment
  HSC41337  Berberis nervosa Brad Klipfel 1974-9-7 563 Humboldt Horse Mtn., above E fork of Willow Creek Comment
  HSC57034  Berberis nervosa Overton, Butler 1979-7-24 9666 Humboldt Near Friday Camp, close to the town of Willow Creek. 1250 Comment
  HSC74628  Berberis nervosa M. A. Baker 1980-5-17 1253 Humboldt Near Le Perron Peak 1066 Comment
  HSC99384  Berberis nervosa K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-6-28 33 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  OBI30306  Berberis nervosa Wallace Weber, John C. Cooke, D. J. Pinkava, & David J. Keil 1969-8-19 2214 Humboldt 24.9 mi W of Humboldt county line on rte 299 Comment
  UC35055  Berberis nervosa Chestnut and Drew 1888-7-11 Humboldt Jarnigan's Comment
  BLMAR413  Bidens cernua Clara Sander 2007-8-22 413 Humboldt South Spit, east side of road near "lone tree" 9 Comment
  UCSB30622  Blechnum spicant Edwards, David 1974-9-2 Humboldt South side of dirt road in "Arcata Community Forest" ca. 0.5 miles from junction with Fickle Hill Rd., ca. 0.25 miles E of junction of Park Ave. and Fickle Hill Rd., Arcata. 97 Comment
  UC1222663  Boechera pauciflora Joseph P. Tracy 1950-6-15 18794 Humboldt 7 mi n Harris (Jenk's Ranch); Mail Ridge Comment
  UC162612  Boechera retrofracta Harley P. Chandler Jun 1901 1511 Humboldt Klamath River North Coast Ranges 426 Comment
  JEPS101806  Bolboschoenus maritimus subsp. paludosus Dean W. Taylor 1991-9-15 12290 Humboldt Big Lagoon, along Highway 101 near the mouth of Tom Creek. 3 Comment
  HSC39874  Bolboschoenus robustus Peter Sorensen 1976-8-6 Humboldt King Salmon Comment
  HSC44612  Boschniakia hookeri R. York 1978-6-5 191 Humboldt Near Waterman Ridge Rd., 12 mi. from terminus with Hwy 299. Bulk collection #122 610 Comment
  BLMAR241  Boykinia occidentalis Jennifer Anthony-Wheeler 1997-6-13 241 Humboldt King range, growing at base of N bank of S fork bear creekbed 463 Comment
  UC303172  Boykinia occidentalis H. E. Parks and Joseph P. Tracy 1924-8-10 6804 Humboldt Van Duzen River near Strongs Station; Northern Coast Ranges, Van Duzen River 60 Comment
  SEINET12012990  Brassica juncea M. A. Lane 1990-3-20 3296 Humboldt below US 101 & above Benbow Drive to Benbow Lake State Recreation Area Comment
  HSC23805  Brassica nigra R. A. Vanbianchi 1971-9-10 78 Humboldt Junction of Fieldbrook Rd. and old Hwy. 299 Comment
  CAS-BOT-BC36703  Brassica rapa John H. Thomas 1966-3-19 11487 Humboldt Southern end of Big Lagoon just inland from the coast between Eureka and Crescent City. Comment
  RSA695640  Brickellia californica J. Russell Bruff 1937-8-17 932 Humboldt Richardson Grove, bed of Eel River. Comment
  UC581795  Brickellia californica Joseph P. Tracy 1931-10-18 9736 Humboldt Camp Grant, along Eel River, 2-5 mi e of the South Fork Eel River 45 Comment
  HSC9086  Briza maxima R. D. Modafferi 1965-5-13 70 Humboldt Intersection of Main St. and old Hwy. 101, S of Trinidad Comment
  RSA10068  Briza maxima Joseph P. Tracy 1930-7-6 8848 Humboldt Iaqua 762 Comment
  UCD57169  Briza maxima P. B. Kennedy 1929-6-13 s.n. Humboldt Etterburg. 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
  HSC24375  Brodiaea elegans subsp. elegans J. O. Sawyer 1970-6-24 2245 Humboldt Ridge on Big Hill Rd., E of Hoopa 1189 Comment
  UC146225  Brodiaea elegans subsp. elegans Joseph P. Tracy 1908-6 2855 Humboldt opposite Buck Mountain; Northern Coast Ranges, Valley of Van Duzen River 304 Comment
  CAS-BOT-BC484216  Brodiaea elegans subsp. elegans Doris K. Kildale 1927-7-1 3618 Humboldt Alton Hill 30 Comment
  HSC35940  Brodiaea elegans subsp. elegans Thomas W. Nelson, Jane P. Nelson 1975-7-15 2033 Humboldt Beside Bald Hills Rd. 1 mi. E of Redwood National Park Comment
  HSC36784  Brodiaea elegans subsp. elegans Thomas W. Nelson, Jane P. Nelson, James Nelson 1975-7-20 2038 Humboldt At summit just W of Larabee Valley Comment
  SEINET3921829  Bromus carinatus Thomas Nelson, Jane P. Nelson 1976-7-26 3037 Humboldt Along ridge northwest of Lassic Peak (Signal peak).; 0 1707 Comment
  UC184919  Bromus carinatus var. carinatus Joseph P. Tracy 1912-6-9 3654 Humboldt Northern Coast Region, Alton Alton; Northern Coast Region, Alton 30 Comment
  UC212891  Bromus carinatus var. carinatus Joseph P. Tracy 1919-5-31 5159 Humboldt near Willow Creek (w side of Trinity River); Northern Coast Ranges, Trinity River 152 Comment
  UC37601  Bromus carinatus var. carinatus J. Burtt Davy 1899-6-27 5879 Humboldt range near summit of Bald Hill (above Hupa Valley) Comment
  UC188939  Bromus commutatus J. Burtt Davy 1899-6-16 5555 Humboldt North Coast Ranges, Scotia Scotia; North Coast Ranges, Scotia Comment
  HSC90694  Bromus hordeaceus Gail Newton 1982-6-5 3585 Humboldt Elk River Wildlife Area, Eureka. Comment
  HSC9253  Bromus hordeaceus R. J. Vernimen 1963-4-27 42 Humboldt 0.5 mi. off Samoa Rd., behind the Georgia-Pacific dump, 7.5 mi. SW of Arcata, along logging road Comment
  UC187099  Bromus hordeaceus Joseph P. Tracy 1908-6 2690 Humboldt opposite Buck Mountain (Valley of Van Duzen River); Northern Coast Ranges 762 Comment
  UCD58714  Bromus hordeaceus A. H. Murphy 1951-6-1 53 Humboldt O. O. Davis Ranch. South slope of South Fork Mtn., 3 miles E of Low Gap. 853 Comment
  HSC102947  Bromus hordeaceus J. P. Smith Jun 2009 12600 Humboldt Arcata. Lawn weed Comment
  UC1145183  Bromus madritensis subsp. rubens Joseph P. Tracy 1948-6-13 18053 Humboldt Harris 762 Comment
  RSA152297  Bromus marginatus Joseph P. Tracy 1950-6-15 18786 Humboldt Mail Ridge. North of Harris 7 miles. 1037 Comment
  HSC99102  Bromus sterilis Cara Witte 2007-5-23 90 Humboldt Approximately 2 miles from intersection with 4N70 (Grouse Mountain Lookout Road) on 4N32. 1395 Comment
  SEINET200827 Image available Bromus sterilis Joseph P. Tracy 1916-5-31 4698 Humboldt Along Eel River from South Fork to Scotia. Holmes Flat. Comment
  UC204535  Bromus sterilis Joseph P. Tracy 1916-5-31 4701 Humboldt along Eel River from South Fork to Scotia, Stitz Creek Stitz Creek; Northern Coast Ranges, Eel River, Stitz Creek 60 Comment
  HSC70926  Bromus tectorum R. York 1980-5-18 577 Humboldt Near Black Mountain 792 Comment
  UC1103350  Bromus tectorum Joseph P. Tracy 1933-5-18 12187 Humboldt near Blue Lake (along Mad River); Mad River 15 Comment
  HSC72631  Bromus vulgaris J. P. Smith 1977-7-3 9252 Humboldt Six Rivers National Forest, along the road to Onion Lake, just above Blue Lake 976 Comment
  UC84157  Cacaliopsis nardosmia J. W. Blankinship 1893-6-15 Humboldt Jager Comment
  UCR39782  Calamagrostis foliosa Kenneth Clark 1980-5-10 641 Humboldt Point Delgada Q., Shelter Cove, coastal bluffs of Point Delgada 3 Comment
  HSC9413  Calamagrostis nutkaensis DWC 1956-5-29 14 Humboldt Capetown, Mattole soil Comment
  UC526776  Calamagrostis nutkaensis Joseph P. Tracy 1925-7-5 7174 Humboldt near High Prairie; Northern Coast Ranges, Bald Mountain 1066 Comment
  UCD57524  Calamagrostis nutkaensis Elizabeth Wilson 1940-7-12 s.n. Humboldt north of Eureka. Comment
  UCR196002  Callitriche heterophylla subsp. bolanderi R. F. Thorne, Percy C. Everett 1965-8-9 35323 Humboldt Northwestern; Outer North Coastal region, Clam Beach County Park, along highway 3 Comment
  UC1103695  Callitriche heterophylla var. bolanderi Joseph P. Tracy 1939-7-9 16346 Humboldt Snow Camp 1402 Comment
  UC1103691  Callitriche heterophylla var. bolanderi Joseph P. Tracy 1913-5-11 4073 Humboldt Eureka Northern Coast Region (at Stephen Hill place) 0 Comment
  HSC73163  Calocedrus decurrens Gail Newton 1980-6-17 207 Humboldt Near Onion Mtn. 1341 Comment
  OBI7412  Calocedrus decurrens H. Wiedman 1966-1 s.n. Humboldt Near the Hoopa Valley Indian Reservation 366 Comment
  JEPS17771  Calochortus coeruleus W. L. Jepson Jul 16 1902-Jul 23 1902 2035 Humboldt Trinity Summit 2133 Comment
  CAS-BOT-BC494356  Calochortus tolmiei Doris K. Kildale 1926-5-2 1851 Humboldt Willow Creek Flat 152 Comment
  CDA10558  Calycadenia ciliosa E. C. Whitney 1960-9-1 Humboldt 1/2 mile north of Pearch Creek on State Highway 96. 0 Comment
  UC34627  Calycadenia fremontii Chesnut and Drew 1888-7-24 Humboldt Hy-Am-Pim Comment
  HSC38744  Calypso bulbosa M. Mesler, K. Mesler, J. D. Ackerman 1976-4-25 752 Humboldt Hwy. 36, E of Bridgeville, near tip of ridge W of Dinsmore Comment
  RSA725961  Calypso bulbosa var. occidentalis Richard G. Swinney 1968-4-5 241 Humboldt North Coast: Lanpheres Preserve, west of Arcata. 3 Comment
  UCSB29353  Calypso bulbosa var. occidentalis Phelps, M. 1972-3-19 Humboldt 1.5 mi. from Garberville; along Old Briceland Rd; 0.5 mi. north of roadside 213 Comment
  HSC44550  Calyptridium monospermum Brad Klipfel 1973-7-15 169 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC55120  Calyptridium monospermum Gilbert Muth 1979-8-1 11899 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1877 Comment
  HSC55149  Calyptridium monospermum G. L. Clifton, Terry Griswold 1979-8-1 12075 Humboldt Near N Trinity Mtn., close to the town of Hoopa. 1798 Comment
  UC1198375  Calyptridium umbellatum Joseph P. Tracy 1933-7-16 12791 Humboldt along summit of South Fork Mountain near Blake lookout; Northern Coast Ranges, South Fork Mountain 1706 Comment
  CHSC445  Calystegia soldanella M. Underhill 1952-7-13 Humboldt 0 Comment
  UC1197877  Calystegia soldanella Joseph P. Tracy 1915-6-6 4650 Humboldt sandy beach near mouth Elk River (Eureka); Northern Coast Region, nr mouth Elk River, at Eureka 0 Comment
  SEINET3992218  Camassia leichtlinii Unknown 1942-5-16 17331 Humboldt Redway (near Garberville) 152 Comment
  RSA12420  Camassia leichtlinii subsp. suksdorfii Carl B. Wolf 1934-7-2 5873 Humboldt At small lake at Snow Camp (Mtns E of Korbel) 1372 Comment
  SEINET3991740  Camassia quamash Unknown 1947-5-3 Humboldt Kneeland Praire Comment
  HSC16450  Camissonia cheiranthifolia D. E. Anderson 1963-3-16 2386 Humboldt Scotia Bluffs Comment
  UCR122368  Camissonia cheiranthifolia George K. Helmkamp, E. A. Helmkamp 2001-7-8 7021 Humboldt North Coast, Samoa Peninsula, 2.6 miles south of CA Hwy 255 bridge across Humboldt Bay 15 Comment
  UC144059  Camissonia contorta Joseph P. Tracy 1908-6 2687 Humboldt opposite Buck Mountain; Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  JEPS31757  Camissoniopsis cheiranthifolia subsp. cheiranthifolia Milo S. Baker 1923-8-4 183 Humboldt about 2 mi n Big Lagoon (on sand bar); Stone Lagoon Comment
  SBBG52988  Camissoniopsis cheiranthifolia subsp. cheiranthifolia J. D. Hobson -Jul-1966 Humboldt S end of sand spit forming Eureka Harbor, 10 mi S of Eureka; Loleta Comment
  UC144060  Camissoniopsis cheiranthifolia subsp. cheiranthifolia J. P. Tracy 1909-7-18 3017 Humboldt opp. Eureka (sand hills of ocean beach); Samoa Comment
  SEINET10462962  Campanula prenanthoides Overton 1979-7-23 OVERTON 9491 Humboldt Near Titlow Hill, on the Willow Creek quad., close to the town of Willow Creek 1280 Comment
  SEINET10463130  Campanula prenanthoides Mcgregor 1921-8-17 MCGREGOR s.n. Humboldt ABANDONED ROAD GRADE, ORICK, "PLANTS OF REQUA" Comment
  UC416597  Campanula prenanthoides Harley P. Chandler 1901-6-14 1476 Humboldt Orleans to Somes Bar; Klamath River 304 Comment
  UC1199206  Cardamine breweri J. P. Tracy 1901-3-31 997 Humboldt immediate vicinity Eureka; immediate vicinity Eureka 0 Comment
  UC161544  Cardamine breweri Joseph P. Tracy 1906-4-29 2432 Humboldt 2 mi from Fields Landing (s slope Humboldt Hill, region about Humboldt Bay); Northern Coast Region, about Humboldt Bay, Humboldt Hill 0 Comment
  CAS-BOT-BC37421  Cardamine californica LeRoy Ellsworth Detling 1935-4-22 1646 Humboldt Redwoods, Prairie Creek Fish Hatchery. 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
  HSC6683  Cardamine californica Lincoln Constance, R. C. Rollins 1942-5-20 2998 Humboldt Eel River, 1 mi. N of Pepperwood 46 Comment
  JEPS53368  Cardamine californica var. integrifolia Joseph P. Tracy 1918-4-21 4878 Humboldt road to Kneeland Prairie (around Humboldt Bay); Northern Coast Ranges, Humboldt Bay 152 Comment
  CAS-BOT-BC37792  Cardamine nuttallii Joseph P. Tracy 1927-6-12 8129 Humboldt Northern Coast Ranges. Horse Mountain. 1524 Comment
  HSC64793  Cardamine oligosperma J. P. Smith 1971-10-9 5015 Humboldt Banks and flood plain of the Mad River above the fish hatchery. Comment
  HSC90418  Cardamine oligosperma Jean Hanson 1980-3-8 27 Humboldt Indian (Gunther) Island, Humboldt Bay, Eureka, W end of island Comment
  HSC100460  Cardamine paucisecta Carl C. Marshall Mar 1886 154 Humboldt Everywhere. Comment
  UC1222955  Carduus tenuiflorus Joseph P. Tracy 1950-6-8 18740 Humboldt on s side of Cape Ridge; Bear River, Capetown, Cape Ridge 30 Comment
  UC577397  Carduus tenuiflorus Joseph P. Tracy 1936-6-28 15008 Humboldt Hungry Hollow Bald Mt. 762 Comment
  CAS-BOT-BC18269  Carex Doris Kildale 1931-5-10 10573 Humboldt Snow Camp. Comment
  UC197208  Carex abrupta Joseph P. Tracy 1913-6-13 4104 1/2 Humboldt opposite Buck Mountain (Dinsmore's Ranch); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  RSA32725  Carex aquatilis var. dives A. A. Heller 1930-8-4 s.n. Humboldt Little River. Comment
  CAS-BOT-BC18076  Carex athrostachya Joseph Prince Tracy 1935-7-23 14140 Humboldt Trinity Summit. Corral Prairie. 1584 Comment
  CAS-BOT-BC19217  Carex barbarae Henry M. Pollard 1945-8-26 s.n. Humboldt Near Orleans Hotel, Klamath River Canyon. Comment
  JEPS79834  Carex barbarae Joseph P. Tracy 1932-6-14 10152 Humboldt Trinity River Valley at Willow Creek Willow Creek; Trinity River Valley, Willow Creek 152 Comment
  CAS-BOT-BC19215  Carex barbarae Joseph Prince Tracy 1929-6-23 8606 Humboldt Trinity River Valley, at Willow Creek. 152 Comment
  CAS-BOT-BC19440  Carex bolanderi Alice Eastwood; John Thomas Howell 1937-6-23 4779 Humboldt Near Dinsmores. Comment
  JEPS109248  Carex bolanderi D. W. Taylor 2007-7-11 20160 Humboldt Six Rivers National Forest, White Oak Opening, along Forest Hwy 1. Comment
  UC195346  Carex bolanderi Joseph P. Tracy 1916-6-25 4747 Humboldt e Trinidad; Northern Coast Ranges, Redwood Creek 152 Comment
  UC562277  Carex bolanderi Joseph P. Tracy 1935-7-23 14162 Humboldt Trinity Summit, lower end of Brett Hole 1584 Comment
  SEINET10706572  Carex bolanderi Huron H. Smith 1911-1 Smith 3834 Humboldt Comment
  CDA38908  Carex buxbaumii Gordon Leppig 1997-6-19 448 Humboldt Big Lagoon County Park, Big Lagoon Bog. Comment
  CHSC82138  Carex cusickii Gordon Leppig 2001-6-16 1569 Humboldt North Coast Region; coastal wetlands. Big Lagoon County Park, Big Lagoon Bog. 3 Comment
  POM313080  Carex cusickii Malcolm A. Nobs, S. Galen Smith 1949-8-3 1197 Humboldt Southern outskirts of Eureka Comment
  HSC48137  Carex densa D. H. Norris 1971-7-17 19600 Humboldt Along Redwood House Rd., about 3 mi. W of intersection with Kneeland-Bridgeville Rd. Comment
  SEINET7557947 Image available Carex echinata subsp. echinata Juha Pykala, D. H. Norris 1987-6-11 1611 Humboldt North Trinity Mountain Wilderness, W of Crogan Hole. 1554 Comment
  UC562271  Carex echinata subsp. echinata Joseph P. Tracy 1932-7-14 10567 Humboldt Corral Prairie Trinity Summit, Corral Prairie 1584 Comment
  SEINET11630974  Carex feta J. P. Tracy 1950-1 19010 Humboldt Buck Mountain, 3 mi S of Burr Valley, on Albee Road 1158 Comment
  HSC48040  Carex fracta D. H. Norris 1972-6-26 23033 Humboldt Along Grouse Mtn. Rd., 5 mi. from intersection with Horse Mtn. Rd. Comment
  HSC45022  Carex globosa R. Sutherland 1978-4-24 2 .24478 Humboldt Kinsey Ridge above Oat Creek 396 Comment
  CAS-BOT-BC20872  Carex globosa Joseph Prince Tracy 1929-6-3 8605 Humboldt North Coast Ranges. Willow Creek Canyon. Mouth of East Fork. 487 Comment
  UC197484  Carex gynodynama Joseph P. Tracy and Ernest B. Babcock 1912-5-11 3603 Humboldt Northern Coast Ranges, Hydesville. Comment
  IRVC1227  Carex hendersonii R. H. Whittaker, W. A. Niering U Humboldt Humboldt Redwoods State Park. Comment
  POM292662  Carex hendersonii Victor Duran 1933-5-12 3412 Humboldt Bull Creek, at South Fork of the Eel River Comment
  HSC102205  Carex hoodii M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-4 1120 Humboldt Along trail (abandoned Road 6E74) from Andy's Camp to Patterson Meadows 1563 Comment
  UC562427  Carex laeviculmis Joseph P. Tracy 1933-7-25 12856 Humboldt Grouse Mountain North Coast Ranges 1524 Comment
  CAS-BOT-BC31470  Carex leptopoda Henry M. Pollard 1945-9-1 s.n. Humboldt Camp Creek, Klamath River Canyon. Comment
  HSC102201  Carex leptopoda M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-4 1115 Humboldt Along trail (abandoned Road 6E74) from Andy's Camp to Patterson Meadows 1563 Comment
  RSA122772  Carex lyngbyei H. S. Yates 1936-6-23 s.n. Humboldt 1 mile west of Bayside; sea level 0 Comment
  SEINET7483608 Image available Carex mendocinensis Ray Tallent 1987-1 894 Humboldt Six Rivers National Forest; Roadside S of Horse Mtn 1420 Comment
  HSC102156  Carex microptera M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-3 1064 Humboldt Patterson Meadows 1555 Comment
  HSC73962  Carex multicaulis Gail Newton 1980-6-7 126 Humboldt Near Brush Mtn. 1128 Comment
  UC2015846  Carex multicaulis Joy Mastrogiuseppe, Tom Nelson 1986-7-22 4360 Humboldt Coast Range, Buck Mountain Comment
  HSC44074  Carex multicostata Thomas W. Nelson, Jane P. Nelson 1977-7-1 3581 Humboldt Along road, N from Alder Springs 1463 Comment
  RSA246861  Carex obnupta Robert F. Thorne, Percy C. Everett 1965-8-5 35139 Humboldt Mt. Chamisal; Below summit. 534 Comment
  HSC38424  Carex obnupta Lon Hall 1975-6-20 407 Humboldt About 2 mi. N from Shelter Cove Rd. on Horse Mtn. Rd., along Bear Creek, from streamside up to unused dirt logging road above creek 488 Comment
  UC562319  Carex obnupta Joseph P. Tracy 1934-7-13 13381 Humboldt North Coast Ranges, Arcata Bottom Arcata Bottom; North Coast Ranges, Arcata Bottom 15 Comment
  HSC90643  Carex pansa Gail Newton 1982-5-5 2535 Humboldt Elk River Wildlife Area, Eureka. Comment
  HSC49246  Carex pansa Rudolf W. Becking 1979-3-25 Humboldt U.S. Coast Guard Station along N Spit Humboldt Bay, Fairhaven Comment
  HSC70467  Carex rossii J. P. Tracy 1904-5-1 2041 Humboldt Eureka 0 Comment
  HSC102114  Carex spectabilis M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 1018 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  UC1103097  Carex subbracteata J. P. Tracy 1900-6-25 861 Humboldt immediate vicinity Eureka 0 Comment
  HSC103143  Carex subfusca M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-3 1154 Humboldt Patterson Meadows 1555 Comment
  POM126148  Carex tumulicola Joseph P. Tracy 1923-5-13 6205 Humboldt Near Bridgeville. Comment
  UC562650  Carex unilateralis Joseph P. Tracy 1930-6-15 8756 Humboldt Dobbyn Creek 152 Comment
  UC1115821  Carex unilateralis Joseph P. Tracy 1938-7-5 16007 Humboldt old Strong's District School House, 5 miles E of town 45 Comment
  CAS-BOT-BC115286  Carex utriculata Joseph Prince Tracy 1932-7-14 10563 Humboldt Trinity Summit, Corral Prairie in wet meadow. Comment
  UC1103610  Carex utriculata Joseph P. Tracy 1937-8-12 15636 Humboldt Snow Camp 1402 Comment
  UC562327  Carex utriculata Joseph P. Tracy 1932-7-14 10563 Humboldt Corral Prairie Trinity Summit 1584 Comment
  CAS-BOT-BC115064  Carex vesicaria Joseph Prince Tracy 1934-8-29 13622 Humboldt South Fork Mountain, in wet meadow and McKay Camp. 1676 Comment
  UC1103612  Carex vesicaria var. major Joseph P. Tracy 1912-10-20 3995 Humboldt Loleta pond Northern Coast Ranges 3 Comment
  CHSC43009  Carex viridula subsp. viridula L. P. Janeway 1987-8-30 2534 Humboldt At Dry Lagoon. Middle of lagoon. 3 Comment
  UCD129942  Carthamus lanatus T. C. Fuller 1962-8-7 9365 Humboldt Luke's Prairie, on ridge 1 m. north above Bull Creek, ca. 2 miles west of Dyerville. Comment
  UC1196855  Castilleja Joseph P. Tracy 1929-7-4 8634 Humboldt French Camp Ridge 1066 Comment
  RSA167257  Castilleja affinis Joseph P. Tracy 1950-6-15 18799 Humboldt Mail Ridge, north of Harris 7 miles Comment
  HSC49512  Castilleja ambigua subsp. humboldtiensis R. York 1979-5-18 299 Humboldt Around Humboldt Bay Comment
  HSC91171  Castilleja ambigua subsp. humboldtiensis Leonel Arguello 1989-6-11 Humboldt Lanphere-Christensen Dunes Preserve, 3 mi. W of Arcata Comment
  HSC30760  Castilleja applegatei subsp. pinetorum Thomas W. Nelson, James Nelson 1973-5-28 922 Humboldt N of Black Lassic along U.S.F.S. Rd. 1S07 Comment
  RSA132832  Castilleja applegatei subsp. pinetorum Peter H. Raven, Sidney R. Snow 1958-7-20 13636 Humboldt 2 miles south of jct. of Friday Ridge Road on Titlow Hill Road, near Grouse Mountain Comment
  UC199382  Castilleja applegatei subsp. pinetorum Mrs. M. H. Manning 1900-1 Humboldt near Hupa Comment
  CAS-BOT-BC255523  Castilleja applegatei var. pinetorum Henry M. Pollard 1943-8-1 s.n. Humboldt Orleans Mt. 1828 Comment
  HSC56028  Castilleja arachnoidea G. L. Clifton, Griswold 1979-7-31 11570 Humboldt Near Trinity Summit Guard Station, close to Hoopa 1884 Comment
  HSC56150  Castilleja arachnoidea G. L. Clifton, Griswold 1979-8-1 11999 Humboldt Near N Trinity Mtn., close to the town of Hoopa. 1798 Comment
  CAS-BOT-BC244878  Castilleja miniata Henry M. Pollard 1948-7-31 s.n. Humboldt Orleans Mt. 1828 Comment
  HSC99043  Castilleja pruinosa Cara Witte 2008-6-4 678 Humboldt Horse Mountain Botanical Area. Forest Service Road 6N38. Near Horse Mountain mine. 1307 Comment
  JEPS88837  Castilleja pruinosa T. I. and F. M. Chuang 1991-7-9 7876 Humboldt Horse Mt. Comment
  UC199378  Castilleja rubicundula subsp. lithospermoides P. E. Goddard 1907-5-29 . 104 Humboldt Van Duzen Comment
  UC1193335  Ceanothus cordulatus P. Zinke 1950-10-9 77 Humboldt King Peak King Peak Quad. 28D1 1280 Comment
  UC668171  Ceanothus cordulatus Joseph P. Tracy 1933-7-11 12681 Humboldt Cold Springs Grouse Mt. 1432 Comment
  HSC18275  Ceanothus cuneatus Francis Winter 1960-4-24 Humboldt Along rd., French Camp Ridge 915 Comment
  UCD19484  Ceanothus cuneatus John M. Tucker 1948-9-3 1852 Humboldt Six Rivers National Forest (formerly part of Trinity National Forest), on Horse Mountain at junction of road to Grouse Mt. and road to Horse Mt. Mine. 1463 Comment
  CAS-BOT-BC83833  Ceanothus cuneatus var. cuneatus Dylan O. Burge 2009-5-11 1154 b Humboldt Willow Creek watershed, NW slope of Brush Mountain 410 Comment
  POM203240  Ceanothus foliosus M. S. Jussel 1931-5-1 s.n. Humboldt Garberville. Comment
  CAS-BOT-BC49655  Ceanothus foliosus var. foliosus Dr. A. Kellogg; W. G. W. Harford 1868-1-1 s.n. Humboldt Red Mt. Route Comment
  HSC37596  Ceanothus foliosus var. foliosus R. Sutherland 1975-5-28 15 .28575 Humboldt 503 Comment
  SD230281  Ceanothus incanus Louis C. Wheeler 1959-8-1 7620 Humboldt Queens Peak Mine Comment
  RSA21590  Ceanothus integerrimus var. californicus Carl B. Wolf 1937-8-13 9235 Humboldt North coast range, 8 mi. east of Hoopa Valley on new road towards Trinity summit. 1220 Comment
  RSA46465  Ceanothus integerrimus var. californicus Doris K. Kildale 1927-5-15 3301 Humboldt Petrolia Comment
  SEINET12211379  Ceanothus integerrimus var. californicus F. H. Utech, Sato, T.; Ohara, M. 1990-1 90 -306 Humboldt Six Rivers National Forest, 0.5 mi S of CA 199 on French Hill Rd (USFS Rd 411) 150 Comment
  HSC97627  Ceanothus integerrimus var. integerrimus Cara Witte 2007-6-5 209 Humboldt Near Grouse Mountain. Along Forest Service Road 4N32. Approximately 1.25 miles south of intersection with 5N04. 1405 Comment
  CDA36054  Ceanothus integerrimus var. macrothyrsus CDFA Staff 1977-6-21 Humboldt Willow Creek. 0 Comment
  CAS-BOT-BC51221  Ceanothus parryi C. Hart Merriam 1920-8-27 s.n. Humboldt South fork Eel River (10 miles so. of Garberville) Comment
  HSC43212  Ceanothus parryi R. Sutherland 1975-4-13 0 .13475 Humboldt 2 mi NE of Briceland along county rd. 183 Comment
  SD42404  Ceanothus parryi Carl B. Wolf 1941-7-27 11086 Humboldt N. Coast ranges, 5.8 mi. W. Maple Creek on road to Freshwater 609 Comment
  SDSU10303  Ceanothus parryi D. F. Howe 1962-5-21 3294 Humboldt 2.3 miles N of Garberville on #101. 152 Comment
  UC775012  Ceanothus parryi Carl B. Wolf 1941-7-27 11086 Humboldt on TD. to Freshwater 5.8 mi w Maple Creek; North Coast Ranges, w Maple Creek on TD. to Freshwater 609 Comment
  HSC23286  Ceanothus pumilus D. E. Anderson, J. P. Smith 1971-7-6 - 1309 Humboldt Horse Mtn. 10 mi W of Willow Creek 1524 Comment
  CAS-BOT-BC52216  Ceanothus thyrsiflorus Doris K. Kildale 1926-4-11 1753 Humboldt Blue Slide in the Van Duzen River Comment
  CAS-BOT-BC52223  Ceanothus thyrsiflorus Carl B. Wolf 1941-7-28 11089 Humboldt Summit of Trinidad Head 45 Comment
  CAS-BOT-BC52993  Ceanothus thyrsiflorus Elizabeth Parsons Hawver 1915-6-1 s.n. Humboldt Carlotta Comment
  JEPS42139  Ceanothus thyrsiflorus W. L. Jepson 1902-6-24 1928 Humboldt near Angel's Ranch (between Korbel and Acorn) 274 Comment
  UC594242  Ceanothus thyrsiflorus S. K. Harris 1936-6-8 3233 Humboldt roadside on bluff above ocean at Centerville; on bluff above ocean at Centerville Comment
  HSC97570  Ceanothus velutinus Cara Witte 2007-6-5 215 Humboldt Along Forest Service Road 4N32. Near Grouse Mountain 1486 Comment
  SD51272  Ceanothus velutinus D. F. Howe 1961-8-2 Humboldt 2.7 miles east of Orick on Bald Mt. road 762 Comment
  SEINET193159  Ceanothus velutinus S. K. Harris 1942-6-12 1257 Humboldt Fickle Hill Road 5 miles north and 2 miles east of Boynton Prairie 630 Comment
  UCD112775  Ceanothus velutinus B. L. Kay 1955-6-7 s.n. Humboldt Wagner Ranch, 5 miles southwest Garberville. Comment
  HSC56259  Ceanothus velutinus var. velutinus G. L. Clifton, Griswold 1979-8-2 12410 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  UCD129971  Centaurea benedicta P. B. Kennedy 1929-6-13 s.n. Humboldt Etter's Ranch, Ettersburg. Comment
  UC1222951  Centaurea cyanus Joseph P. Tracy 1943-11-28 17456 Humboldt near Alton (Eel River bar at mouth of Van Duzen); Eel River, Van Duzen Comment
  CDA7309  Centaurea pratensis E. C. Whitney 1968-9-6 Humboldt Holmes Flat. Rutledge property. 0 Comment
  JEPS25793  Centaurium muehlenbergii L. R. Heckard 1960-8-23 1211 Humboldt about 0.5 mi s Dry Lagoon State Park (near Orick) 152 Comment
  UC906759  Centaurium muehlenbergii Joseph P. Tracy 1942-6-15 17155 Humboldt Garberville 152 Comment
  UC906760  Centaurium muehlenbergii Joseph P. Tracy 1947-7-2 17756 Humboldt 6 mi se Arcata; Fickle Hill 609 Comment
  RSA245260  Centaurium muehlenbergii B. D. Rogers, William J. Ferlatte 1966-8-15 3130 Humboldt North Bank Road, two miles north of Arcata. Comment
  RSA391522  Centaurium muehlenbergii M. V. Hood 1940-08 s.n. Humboldt Eel River - near Redway. 457 Comment
  JEPS113353  Centaurium tenuiflorum Jeff Greenhouse 2003-8-27 5117 Humboldt Hwy 101 Comment
  HSC62760  Centranthus ruber J. M. DiTomaso 1979-4-2 853 Humboldt Arcata, Fickle Hill Rd. Comment
  UC1196466  Cephalanthera austiniae Joseph P. Tracy 1911-7-12 3523 Humboldt mt. slopes along rd. near Three Creeks; Northern Coast Ranges 762 Comment
  BLMAR609  Cerastium arvense Jennifer Anthony-Wheeler 2011-4-21 609 Humboldt King range, Above Smith gulch. Strawberry Rock. KRSR0004 243 Comment
  HSC4109  Cerastium fontanum subsp. vulgare D. E. Anderson 1962-5-1 2201 Humboldt 1 mi. W of Hoopa Comment
  HSC12705  Cerastium glomeratum Jana Kattenhorn 1970-10-28 151 Humboldt Mad River at the mouth of Lindsey Creek, N Bank Rd. off Hwy. 299 Comment
  HSC39837  Cerastium glomeratum Peter Sorensen 1976-6-12 Humboldt Woodley Island, Humboldt Bay Comment
  HSC79373  Cerastium glomeratum Kenneth Clark 1980-3-27 552 Humboldt Above Dead Man's Gulch 183 Comment
  UC1198315  Cerastium glomeratum Joseph P. Tracy 1913-6-14 4123 Humboldt opposite Buck Mt. (Dinsmore's Ranch); Northern Coast Ranges, Van Duzen R. Valley, Dinsmore's Ranch 762 Comment
  HSC4107  Cerastium glomeratum David K. Smith 1968-11-20 81 Humboldt About 4 miles SE of Arcata, along Jacoby Creek. Comment
  HSC4112  Cerastium glomeratum Jack Rockwell 1962-4-5 31 Humboldt N bank of Van Duzen River, E of Hwy. 101 9 Comment
  JEPS51355  Cerastium viride Lincoln Constance 1934-6-3 805 Humboldt on Redwood Hwy. 1 mi. n. Dyerville (rd. from High Rock to Horse Prairie); S. Fork Eel R., Bull Creek Region Comment
  HSC2136  Cercis occidentalis Doris K. Kildale 1926-5-2 1909 Humboldt Willow Creek Comment
  POM126513  Cercis occidentalis Joseph P. Tracy 1922-4-30 6003 Humboldt Trinity River Valley, near Willow Creek. 152 Comment
  SBBG11071  Chamaecyparis lawsoniana D. E. Breedlove 1961-7-4 646 Humboldt 7 mi W of Willow Crk on US Hwy 299 521 Comment
  UCSB12070  Chamaecyparis lawsoniana Howe, J. 1938-3-30 Humboldt Humboldt County Comment
  HSC99569  Chamaesyce serpillifolia subsp. serpillifolia K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-8-10 234 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
  UC1122501  Chamerion angustifolium subsp. circumvagum H. L. Person 1931-7-30 Humboldt Fieldbrook Eureka Quadrangle Comment
  UC562419  Chamerion angustifolium subsp. circumvagum Joseph P. Tracy 1935-7-28 14322 Humboldt head of Devil's Hole Trinity Summit 1828 Comment
  CAS-BOT-BC68264  Cheilanthes gracillima Henry M. Pollard 1943-8-1 s.n. Humboldt Orleans Mt. 1828 Comment
  UC503076  Cheilanthes gracillima Joseph P. Tracy 1927-6-12 8166 Humboldt Horse Mt; Northern Coast Ranges 1066 Comment
  RSA246903  Chenopodium multifidum R. F. Thorne, P. Everett 1965-8-5 35168 Humboldt Samoa Dunes. 3 Comment
  SD40327  Chenopodium strictum var. glaucophyllum Edith A. Purer 1932-7-30 4670 Humboldt South of Orick Comment
  HSC41240  Chimaphila umbellata Brad Klipfel 1974-5-27 379 Humboldt Horse Mtn., NE face away from towers Comment
  HSC41343  Chimaphila umbellata Brad Klipfel 1974-8-2 503 Humboldt Horse Mtn. Comment
  UC535746  Chimaphila umbellata Eleanor Armstrong 1173 Humboldt Richardson Grove Comment
  SEINET3992219  Chlorogalum pomeridianum Unknown 1946-7-7 17611 Humboldt Trinity River Valley, at Willow Creek 152 Comment
  CAS-BOT-BC420628  Chrysosplenium E. A. McGregor 1921-8-17 118 Humboldt On old grade, S.E. of Orick Comment
  UC154073  Chrysosplenium glechomifolium J. P. Tracy 1905-3-5 2147 Humboldt immediate vicinity Eureka 0 Comment
  RSA183599  Cinna latifolia D. E. Anderson 1965-9-5 4085 Humboldt Along Mad river, ca. 3 miles south of Blue Lake Comment
  HSC99470  Circaea alpina subsp. pacifica K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-14 124 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  UC505099  Circaea alpina subsp. pacifica Joseph P. Tracy Jul 16 1930-Jul 19 1930 8927 Humboldt near McKay Camp (S. Fork Mt.); Northern Coast Ranges, S. Fork Mt. 1676 Comment
  CAS-BOT-BC284408  Cirsium arvense Carl B. Wolf 1927-8-22 810 Humboldt Along the roadside at Orick Comment
  UC166540  Cirsium brevistylum J. P. Tracy 1903-8-9 1935 Humboldt immediate vicinity of Eureke; Eureka 0 Comment
  CDA1114  Cirsium brevistylum T. R. Haig, T. C. Fuller 1959-6-12 2792 Humboldt 8 mi. N/ Trinidad. 0 Comment
  CDA15025  Cirsium occidentale var. candidissimum B. Villegas 1998-8-5 s.n. Humboldt North Coast Ranges; Nr. Berry Summit on Titlow Hill Rd, 3.9 mi. S of Hwy 299. Comment
  UC129512  Cirsium occidentale var. candidissimum Joseph Burtt Davy and Walter C. Blasdale 1899-6-7 5383 Humboldt near Harris Comment
  OBI81553  Cirsium occidentale var. candidissimum Jill M. Bushakra, John Bushakra 2000-6-16 42 Humboldt Across Hwy 101/Hwy 271 from the Elfin Glen Gift Shop, north of the Standish-Hickey Prk. Opening in coniferous forest. 213 Comment
  JEPS59211  Cirsium occidentale var. venustum Lincoln Constance 1934-5-29 724 Humboldt near jctn South Fork of Eel River (Upper look prairie); Bull Creek Region, South Fork of Eel River, Upper Look Prai 365 Comment
  RSA0070877  Cirsium remotifolium Joseph P. Tracy 1949-8-11 18472 Humboldt East of headwaters of Redwood Creek, beginning where the electric power line crosses, and working south. Kinsey Ridge, south from Grouse Mt., 2 to 6 miles. 1280 Comment
  HSC98726  Cirsium remotifolium var. odontolepis Cara Witte 2008-7-2 806 Humboldt Forest Service Road 4N38. 2 miles north of intersection to Board Camp Lookout. Near gate. 1401 Comment
  SBBG65940  Cirsium vulgare R. Hartwell 1938-8-3 103 Humboldt near Weott Comment
  HSC11999  Cirsium vulgare D. La Conte 1970-7-11 27 Humboldt Comment
  HSC89489  Cirsium vulgare P. A. Daly 1986-2-28 65 Humboldt Trinidad Head, along trail 61 Comment
  HSC45282  Clarkia amoena Clifton Raymond Chesbrough 1971-7-26 100 Humboldt 2 mi. N of Trinidad Comment
  UC1222854  Clarkia amoena Joseph P. Tracy 1951-6-30 19601 Humboldt Trinity Highway, at Berry's North Coast Ranges, Redwood Creek 274 Comment
  UC183702  Clarkia amoena subsp. amoena Joseph P. Tracy 1912-7-26 3857 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  JEPS43698  Clarkia amoena subsp. amoena Milo S. Baker 1923-8-3 172 Humboldt near Trinidad; North Coast Comment
  JEPS43650  Clarkia amoena subsp. huntiana W. L. Jepson 1902-7-1 1970 Humboldt near Berry's Ranch; Redwood Creek Comment
  CHSC52939  Clarkia davyi L. P. Janeway 1984-5-16 792 Humboldt On the North Spit of Humboldt Bay; on the west side of Samoa Rd ca 1/4 mile north of the boat ramp. 3 Comment
  UC56307  Clarkia gracilis subsp. gracilis Joseph Burtt Davy 1899-6-21 5728 Humboldt Supply Creek Comment
  CAS-BOT-BC172502  Clarkia purpurea subsp. quadrivulnera L. R. Abrams 1916-7-11 6028 Humboldt Mouth of Grizzly Creek on Van Duzen River Comment
  CAS-BOT-BC172503  Clarkia purpurea subsp. quadrivulnera Doris K. Kildale 1926-6-9 2141 Humboldt Horse Mountain 1219 Comment
  CAS-BOT-BC172507  Clarkia purpurea subsp. quadrivulnera Doris K. Kildale 1925-6-28 804 Humboldt Kneeland Prairie, bald hills 762 Comment
  UC1196976  Clarkia purpurea subsp. quadrivulnera Joseph P. Tracy 1936-6-9 14898 Humboldt 4 mi nw Petrolia (Domingo Hill) 213 Comment
  JEPS1957 Image available Clarkia purpurea subsp. viminea W. L. Jepson 1902-8-13 1971 Humboldt near Redwood Creek; Hupa Road; Hupa Road, near Redwood Creek, Humboldt Co. Comment
  JEPS43680  Clarkia rhomboidea Lincoln Constance 1934-6-15 880 Humboldt Summit Grasshopper Peak; South Fork Eel River, Bull Creek Region 975 Comment
  CAS-BOT-BC439933  Claytonia perfoliata subsp. mexicana Doris K. Kildale 1926-3-21 1583 Humboldt Kneeland Prairie - summit 853 Comment
  CAS-BOT-BC439932  Claytonia perfoliata subsp. mexicana C. E. Fellows 1972-4-29 480 C Humboldt Ca. 8 miles ESE of Eureka. 3.1 miles above the town of Freshwater on the W side of the road to Kneeland. Ca. 20 m below the road (and the dump) 609 Comment
  HSC17678  Claytonia perfoliata subsp. mexicana J. L. Baker 1965-4-13 47 Humboldt 4 mi. N of Arcata on N Bank Rd. Comment
  UC198591  Claytonia perfoliata subsp. perfoliata Joseph P. Tracy 1916-4-30 4682 Humboldt Table Bluff Northern Coast Ranges, Humboldt Bay (around Humboldt Bay) 152 Comment
  UC494168  Claytonia perfoliata subsp. perfoliata H. E. Parks, J. P. Tracy 1930-5-25 877 Humboldt Laribee Valley Comment
  UC203565  Claytonia rubra subsp. rubra Joseph P. Tracy 1918-4-14 4871 Humboldt Fish's Mill Creek; Northern Coast Ranges, Dows Prairie 60 Comment
  UC672999  Claytonia rubra subsp. rubra Joseph P. Tracy 1937-5-17 15286 Humboldt Willow Creek; Trinity River Valley 152 Comment
  HSC44423  Claytonia saxosa Brad Klipfel 1975-5-30 652 Humboldt Horse Mtn. Comment
  HSC64324  Claytonia sibirica J. P. Smith 1973-5-26 6824 Humboldt Scotia Bluffs along the Eel River near Rio Dell Comment
  CAS-BOT-BC443898  Claytonia sibirica C. E. Etienne 1972-9-4 s.n. Humboldt Lumber road to Klamath River, ca 8 mi. inland and 1 mi. N of the Humboldt Co. line. 30 Comment
  HSC17733  Claytonia sibirica E. W. Styskel 1963-5-16 31 Humboldt 3 mi. SE of Korbel, on Snow Camp Rd. 290 Comment
  JEPS43310  Claytonia sibirica W. L. Jepson 1902-6-29 1951 Humboldt Redwood Creek; Hupa Road Comment
  CAS-BOT-BC92591  Clematis ligusticifolia Doris K. Kildale 1927-7-3 3643 Humboldt Willow Creek Flat. 152 Comment
  HSC39721  Clinopodium douglasii D. E. Anderson, J. P. Smith 1971-6-28 - 1255 Humboldt 2.5 mi. S of Blue Lake along the Mad River Comment
  SBBG970  Clintonia andrewsiana H. and M. Dearing 1931-5-16 251 Humboldt Weott Comment
  UCSB12091  Clintonia andrewsiana Dearing, Hugh; Dearing, Margaret 1931-5-16 Humboldt Weott Comment
  CAS-BOT-BC499336  Clintonia andrewsiana M. S. Jussel 1931-5-2 s. n. Humboldt 20 miles N. of Garberville Comment
  HSC100554  Clintonia andrewsiana Carl C. Marshall May 1885 69 Humboldt Redwood forests. Comment
  HSC102018  Clintonia uniflora M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-12 919 Humboldt Rustic Camp, northwest of Patterson Meadows 1512 Comment
  HSC48846  Clintonia uniflora Brad Klipfel 1973-7-15 205 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  CAS-BOT-BC499964  Clintonia uniflora Mrs. H. C. Cantelow 1939-6-5 2446 Humboldt About 1 1/2 miles west of Dinsmores Comment
  HSC100710  Cnicus arvensis Carl C. Marshall Sep 1886 250 Humboldt Vicinity of Mad River. Comment
  CDA3701  Coincya monensis Jim Belsher 1997-2-13 2 Humboldt Lot ESE of the Manila Community Services District sewage pump station Comment
  UC147862  Collinsia greenei Joseph P. Tracy 1908-6 9840 Humboldt nw slope Buck Mtn; Northern Coast Ranges, Buck Mtn 1219 Comment
  HSC73584  Collinsia linearis Gail Newton 1980-7-14 1492 Humboldt Near Last Chance Ridge. 1219 Comment
  UC54920  Collinsia linearis Mrs. M. H. Manning 1900-1 Humboldt near Hupa Comment
  HSC96271  Collinsia linearis Eric Schori, Kazuyuki Ishimaru 2005-6-15 12 Humboldt About 18 miles S of Hwy. 299 1400 Comment
  UC203965  Collinsia rattanii Joseph P. Tracy 1918-5-26 4945 Humboldt lower slopes of Grouse Mountain towards Redwood Creek; Northern Coast Ranges, Grouse Mountain 762 Comment
  UC1196851  Collinsia sparsiflora var. collina Joseph P. Tracy 1913-6-20 4242 Humboldt Grassy slopes on lower foothills of Buck Mountain. 762 Comment
  JEPS26358  Collinsia sparsiflora var. sparsiflora Joseph P. Tracy 1932-5-10 9932 Humboldt Bear River Ridge; North Coast Ranges; Bear River Ridge 609 Comment
  UC1196824  Collinsia sparsiflora var. sparsiflora Joseph P. Tracy 1904-4-3 2007 Humboldt immed. vicinity Eureka 0 Comment
  JEPS7053  Collinsia torreyi var. wrightii Joseph P. Tracy 1932-7-12 10467 Humboldt head of Brett Hole Trinity Summit 1828 Comment
  UC615026  Collomia grandiflora Beryl O. Schreiber 1934-6-6 1143 Humboldt Gray's Resort Redwood Creek (brushy slope) Comment
  HSC23477  Collomia heterophylla D. E. Anderson, J. O. Sawyer, J. P. Smith 1970-5-10 5061 Humboldt Along road from Redwood Creek to Hoopa, 1-3 mi. W of Hoopa Comment
  HSC16923  Collomia heterophylla Anonymous 1957-4-27 123 Humboldt 5 mi. E of Honeydew Comment
  HSC97228  Collomia tinctoria Kiera A. Freeman, Heather J. Perry 2007-6-11 6 Humboldt 14.1 mi. S of Hwy. 299 on NF1 1372 Comment
  HSC74377  Collomia tracyi M. A. Baker 1980-6-28 2492 Humboldt Near Mad River Buttes 1445 Comment
  HSC99065  Collomia tracyi Cara Witte 2008-7-2 812 Humboldt Board Camp Mountain. Road to Tri Board Camp. Forest Service Road 4N38. 1574 Comment
  UC1197861  Collomia tracyi Joseph P. Tracy 1930-6-23 9130 Humboldt on hillside of disintegrated rock Northern Coast Ranges, Horse Mountain 1432 Comment
  UC1197865  Collomia tracyi Joseph P. Tracy 1939-8-16 16416 Humboldt gravelly places near Clear Lake; North Coast Ranges 1524 Comment
  POM278793  Convolvulus arvensis Lyman Benson 1928-7-12 479 Humboldt Weott Ranger Station. 61 Comment
  HSC59032  Corallorhiza maculata M. A. Baker 1979-6-8 804 Humboldt 0.5 mi. NW of Gan's Prairie, E side of Bald Hill's Rd. Comment
  HSC78076  Cordylanthus maritimus subsp. palustris Craig Martz 1984-7-18 204 Humboldt Samoa Peninsula, about 100 feet E of paved parking area at the junction of Hwy. 255 and Vance Ave, upper edge of marsh. Comment
  HSC100234  Cordyline australis J. P. Smith 2010-5-29 12891 Humboldt Eureka; Near intersection of West Del Norte St. and Railroad Ave. Comment
  CAS-BOT-BC101142  Corethrogyne filaginifolia Joseph P. Tracy 1936-7-10 15046 Humboldt Vicinity of Carlotta 30 Comment
  CAS-BOT-BC101143  Corethrogyne filaginifolia Doris K. Kildale 1927-6-25 3562 Humboldt Shelter Cove Comment
  CAS-BOT-BC101147  Corethrogyne filaginifolia W. R. Dudley 1899-6-1 s.n. Humboldt Eureka [Penninsula] Peninsula Comment
  HSC5415  Corethrogyne filaginifolia D. E. Anderson 1963-5-25 2494 Humboldt 4 mi. W of Petrolia 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
  JEPS30545  Corethrogyne filaginifolia Peter H. Raven with R. Snow 1958-7-21 13658 Humboldt 2.0 mi n Cape Mendocino Comment
  CAS-BOT-BC212008  Cornus nuttallii C. D. Duncan 1920-9-22 s.n. Humboldt Hoopa Valley Comment
  HSC6419  Cornus nuttallii J. Sandborg, F. Sandborg Jun 1968 32 Humboldt Bluff Creek near Notice Creek. Comment
  UC35022  Cornus nuttallii Chesnut and Drew 1888-7-9 Humboldt Kneeland Prairie 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
  SEINET10448332  Coronopus didymus Mary Susan Taylor 1980-10-9 Taylor 3365 Humboldt Bed of Jacoby Creek, ca. 0.4 mi W of its jct with Arcata Rd, ca. 5 mi S of Arcada in Bayside, Robert Dalenicek property. 15 Comment
  UC1103505  Corylus californica Joseph P. Tracy 1909-8-29 3080 Humboldt Humboldt Hill, N side Northern Coast Region, region about Humboldt Bay 0 Comment
  CAS-BOT-BC180306  Corylus cornuta subsp. californica H. E. McMinn 1922-8-4 332 Humboldt Along Van Duzen River Comment
  UC1199280  Cotula australis J. P. Tracy 1901-3-16 994 Humboldt Eureka Comment
  SEINET3817860  Cotula coronopifolia J. P. Tracy 1903-8-9 1948 Humboldt Immediate vicinity of Eureka Comment
  HSC12545  Cotula coronopifolia C. Kline 1970-10-28 52 Humboldt North Bank Rd., 3 mi. W of Blue Lake, Mad River gravel bottoms Comment
  HSC5426  Cotula coronopifolia R. Spellenberg 1964-6-15 412 Humboldt Along egde of Humboldt Bay, on the south side of Arcata Comment
  CAS-BOT-BC290589  Crepis capillaris David D. Keck; J. Clausen 1935-6-16 3397 Humboldt Orick Comment
  UC1071676  Crepis capillaris H. L. Person 1932-7-19 Humboldt Lindsay Creek Eureka Quadrangle Comment
  CAS-BOT-BC291489  Crepis capillaris David D. Keck; J. Clausen 1935-6-16 3396 Humboldt Just south of Trinidad Comment
  CDA4446  Crepis occidentalis Laurel Goldsmith & Wanda Naylor 2005-6-15 10 Humboldt 1 mile southeast of Grouse Mountain on unnamed forest service road. Comment
  UC76597  Crocidium multicaule Mrs. M. H. Manning 1900-1-1 Humboldt near Hupa Comment
  UC1364266  Crocosmia X crocosmiiflora T. C. Fuller 1968-7-30 17446 Humboldt 1 mi s Fields Landing (nw corner of overpass of Hwy 101 freeway to Garberville) Comment
  HSC40818  Cryptantha affinis Thomas W. Nelson, Jane P. Nelson 1976-6-22 2851 Humboldt Along road to Goat Hill at spring. 1646 Comment
  UC525605  Cryptantha intermedia Joseph P. Tracy 1932-6-14 10141 Humboldt w of mouth of South fork of Trinity River; North Coast Ranges 609 Comment
  UCSB14885  Cryptantha leiocarpa 1962-6-7 Humboldt 1.5 miles south of Samoa on peninsula on western side of Humboldt Bay Comment
  HSC55144  Cryptogramma acrostichoides G. L. Clifton, Griswold 1979-8-1 12045 Humboldt Near N Trinity Mtn., close to the town of Hoopa. 1798 Comment
  JEPS39837  Cupressus lawsoniana W. L. Jepson 1902-6 2131 Humboldt Three Creeks to summit of ridge (on grade to Redwood Creek) 914 Comment
  HSC6391  Cuscuta californica J. P. Tracy 1930-8-17 9160 Humboldt Big Lagoon 3 Comment
  UC562297  Cycladenia humilis var. humilis Joseph P. Tracy 1935-7-29 14349 Humboldt Devil's Backbone - ridge connecting Trinity Summit with Salmon Summit; Devil's Backbone 1676 Comment
  UC154093  Cyclospermum leptophyllum Joseph P. Tracy 1900-9-10 944 Humboldt near Hydesville; Northern Coast Region 60 Comment
  HSC45646  Cynoglossum grande Diane L. Reed 1978-5-27 135 Humboldt Horse Mtn., Titlow Hill Rd., 2.7 mi. from Hwy. 299 Comment
  UC54747  Cynoglossum grande Joseph Burtt Davy and Walter C. Blasdale 1899-6-11 5428 Humboldt between Hubbard's Station and Elk Prairie; North Coast Ranges Comment
  BLMAR33  Cynosurus echinatus Brad Barr June, 1982 33 Humboldt King range, Lake ridge south facing slope Comment
  HSC37238  Cynosurus echinatus Lon Hall 1975-6-19 406 Humboldt About 2 mi. N of Shelter Cove Rd. on Horse Mtn. Rd. 549 Comment
  JEPS26624  Cynosurus echinatus Ira L. Wiggins 1957-6-21 14142 Humboldt 1 mi. s. Garberville (e. side of rd.) Comment
  UC213326  Cyperus bipartitus Joseph P. Tracy 1920-8-15 5383 Humboldt Klamath R. at Bluff Creek; Northern Coast Ranges, Klamath R. 152 Comment
  HSC37996  Cyperus eragrostis Peter Sorensen 1976-6-19 Humboldt Woodley Island Comment
  UC1103641  Cyperus strigosus Joseph P. Tracy 1931-9-7 9655 Humboldt Trinity R. Valley at Willow Creek; Trinity R. Valley 152 Comment
  HSC34810  Cytisus scoparius David Peters 1975-4-9 2 Humboldt .2 mi. E of Old Arcata Rd. on Jacoby Cr. Rd. Comment
  UC37939  Dactylis glomerata Joseph Burtt Davy and Walter C. Blasdale 1899-6-11 5431 Humboldt Hubbard's Station Comment
  HSC1967  Danthonia californica William J. Ferlatte, B. D. Rogers 1966-6-15 2108 Humboldt Larabee Valley 762 Comment
  RSA34244  Danthonia californica var. americana L. Larsen 1935-5-25 s.n. Humboldt Redway [county not specified on label] Comment
  UC1131389  Danthonia californica var. americana H. L. Person 1932-5-11 Humboldt near Arcata; Eureka Quadrangle Comment
  UCD61038  Danthonia intermedia R. Tofsrud 1948-9-3 Humboldt Between Tilton Hill and Clear Lake, on road between Horse Mt. and Grouse Mt. Comment
  JEPS49588  Darmera peltata Harley P. Chandler May 1901 1233 Humboldt Redwood Belt; North Coast Ranges 91 Comment
  CAS-BOT-BC420360  Darmera peltata Volney Rattan 1903-1-1 s.n. Humboldt unspecified Comment
  JEPS12214  Datura stramonium Lincoln Constance 1934-6-18 897 Humboldt border N. Dyerville Flat (R.R. Sta and P.O., Bull Creek region, near South Fork Eel River); South Fork Eel River, Bull Creek Region Comment
  CAS-BOT-BC292093  Delairea odorata Stuart K. Harris 1960-12-5 22066 Humboldt Mouth of Howe Creek Comment
  SEINET12104065  Delphinium decorum F. H. Utech 1988-5-23 88 -283 Humboldt along CA 36 from Bridgeville enroute to Dinsmore 800 Comment
  HSC33057  Delphinium decorum subsp. tracyi Thomas W. Nelson 1974-5-7 1236 Humboldt Beside Kneeland Rd. 0.5 mi. N of Kneeland School Comment
  RSA304854  Delphinium gracilentum James R. Shevock 1971-5-29 643 Humboldt Trinity Hwy. 457 Comment
  CAS-BOT-BC10146  Delphinium menziesii Doris K. Kildale 1926-3-21 1617 Humboldt Kneeland Prairie 762 Comment
  CAS-BOT-BC9954  Delphinium nudicaule Doris K. Kildale 1928-6-24 5288 Humboldt Horse Mountain 853 Comment
  RSA125699  Delphinium polycladon E. K. Balls 1957-5-25 22603 Humboldt 4.5 miles SW of Dinsmores, Hwy 36. 823 Comment
  CAS-BOT-BC121976  Delphinium trolliifolium Mrs. G Earle Kelly 1924-6-1 s.n. Humboldt Kneeland Prairie 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
  CAS-BOT-BC121970  Delphinium trolliifolium Carl B. Wolf 1937-6-19 8916 Humboldt 3 miles NE of Little Van Duzen River on road to Dinsmore's. 762 Comment
  HSC45269  Delphinium trolliifolium M. Alcasas 1978-6-3 122 Humboldt Titlow Hill Rd. 0.8 mi. from Hwy. 299 1113 Comment
  HSC46068  Delphinium trolliifolium William J. Ferlatte, B. D. Rogers 1966-6-15 2101 Humboldt Plympton Ranch 915 Comment
  RSA75637  Delphinium trolliifolium Albert M. Vollmer, L. Beane 1951-6-6 106 Humboldt On road between Orick and Weitchpec. Comment
  UC1334522  Delphinium trolliifolium G. A. L. Mehlquist and J. A. Jenkins 1940-5-23 17 Humboldt Comment
  HSC40248  Deschampsia cespitosa Linda M. Barker 1976-7-5 1645 Humboldt 3 mi. W of Arcata. Comment
  UC1131482  Deschampsia cespitosa subsp. beringensis H. S. Yates 1936-6-18 5731 Humboldt Big Lagoon Rocky Point Quad., Big Lagoon 7 Comment
  UC526669  Deschampsia cespitosa subsp. beringensis Joseph P. Tracy 1927-7-16 8257 Humboldt mouth of Elk R.; Northern Coast Region, around Humboldt Bay, Elk R. 6 Comment
Read comments
Sep 27 2007
  RSA10094  Deschampsia danthonioides Joseph P. Tracy 1932-7-14 10538 Humboldt Klamath Mountains, Trinity Summit; At Corral Prairie 1524 Comment
  UCD62501  Deschampsia danthonioides A. H. Murphy 1951-5-21 47 Humboldt Prior Ranch, 2 miles S of Blocksburg. Comment
  HSC24253  Deschampsia elongata D. E. Anderson 1970-5-21 5081 Humboldt Scotia bluffs. Comment
  JEPS75412  Deschampsia elongata W. L. Jepson 1932-7-24 16381 Humboldt 91 Comment
  POM207194  Deschampsia elongata Joseph P. Tracy 1901-4-26 1043 Humboldt Immediate vicinity of Eureka 0 Comment
  UC1198795  Descurainia incana Joseph P. Tracy 1935-7-22 14128 Humboldt Corral Prairie Trinity Summit (along trail) 1584 Comment
  HSC41656  Descurainia sophia Karen Lu 1977-10-30 Humboldt Lanphere Rd., Arcata, 0.25 mi. E of the bridge over Mad River Slough Comment
  JEPS9736  Dicentra formosa Joseph P. Tracy 1930-8-17 9164 Humboldt Big Lagoon; Northern Coast Region 15 Comment
  HSC95828  Dicentra formosa Steven Lee 2004-3-30 7 Humboldt Arcata Community Forest, 100 ft. E of junction of Granite Ave. and Jolly Giant Creek Rd. Comment
  UC1362285  Dicentra formosa Kingsley R. Stern 1964-6-15 2108 Humboldt ca 2.5 mi s Fortuna (0.5 mi e on Drake Hill Road, on Newman property) Comment
  JEPS5680  Dichelostemma X venustum Milo S. Baker 1923-7-20 29 Humboldt Head of South Fork of Yager Creek Comment
  UC1005674  Dichelostemma capitatum Frank W. Gould 1939-5-30 838 Humboldt about 25 mi due e Eureka (near top of Horse Mountain); Horse Mountain 1100 Comment
  SEINET12053836  Dichelostemma capitatum L. K. Henry 1971-1 Humboldt along Rt. 36, 2 mi E of Dinsmore, in Six Rivers National Forest Comment
  UC1198164  Dichelostemma congestum Joseph P. Tracy 1917-6-17 4814 Humboldt near Field's Landing (Still Farm, near Humboldt Bay); Northern Coast Ranges, Humboldt Bay 15 Comment
  SBBG11069  Dichelostemma ida-maia D. E. Breedlove 1961-7-4 649 Humboldt 10.9 mi W of Willow Crk on US Hwy 299 822 Comment
  CAS-BOT-BC501022  Dichelostemma ida-maia Henry M. Pollard 1946-8-16 s.n. Humboldt Across [Klamath] river from Orleans Comment
  JEPS5679  Dichelostemma ida-maia Milo S. Baker 1923-7-20 47 b Humboldt near head of Yager Creek Comment
  HSC23713  Digitalis purpurea Tim Baroni 1971-6-25 61 Humboldt 8 mi. E of Petrolia Comment
  UC1145034  Digitaria sanguinalis Joseph P. Tracy 1942-9-13 17316 Humboldt Eureka 30 Comment
  UC479427  Disporum smithii Marcus E. Jones, A. M. 1931-7-14 29277 Humboldt s of Eureka Comment
  RSA68743  Disporum smithii Victor Duran 1933-5-12 3413 Humboldt Bull Creek, at South Fork of the Eel River Comment
  UCD64617  Distichlis spicata var. stolonifera Malcolm A. Nobs; S. Galen Smith 1949-8-3 1178 Humboldt Around Fields Landing. Comment
  HSC17907  Dodecatheon alpinum W. K. Parks Jul 1933 1374 Humboldt S Fork Mtn. Comment
  JEPS14696  Dodecatheon alpinum W. L. Jepson Jul 16 1902-Jul 23 1902 2105 Humboldt Trinity Summit 2133 Comment
  BLMAR622  Dodecatheon hendersonii Jennifer Wheeler 2011-6-1 622 Humboldt Lacks Creek, Pine Ridge Rd, entry to firewood cutting area 975 Comment
  UC1198624  Dodecatheon hendersonii Joseph P. Tracy 1933-6-13 12591 Humboldt on road w from Hoopa Valley (Hoopa Mountain); Northern Coast Ranges, , Hoopa Valley 914 Comment
  UC1199178  Draba verna Joseph P. Tracy 1933-5-18 12191 Humboldt near Blue Lake (along Mad River); , near Blue Lake 15 Comment
  UC249685  Draba verna Joseph P. Tracy 1922-4-2 5986 Humboldt near Carlotta (Van Duzen River); Northern Coast Ranges, Van Duzen River bar 30 Comment
  HSC74471  Draperia systyla Gail Newton 1980-7-23 1739 Humboldt Near Packsaddle Ridge 1463 Comment
  CAS-BOT-BC401534  Drosera rotundifolia Carl B. Wolf 1927-8-1 s.n. Humboldt Marsh near Eureka Comment
  RSA0011677  Drosera rotundifolia C. B. Wolf 1927-8-22 778 Humboldt Big Lagoon. Comment
  UC12540  Drymocallis glandulosa var. wrangelliana C. C. Marshall 1888-1 Humboldt Comment
  HSC44564  Drymocallis hansenii Brad Klipfel 1973-7-15 184 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC40775  Drymocallis hansenii Thomas W. Nelson 1976-7-9 3012 Humboldt S of Mt. Lassic (Signal Peak) 1707 Comment
  HSC975  Dryopteris arguta R. I. Bonn 1965-5-9 49 Humboldt 4 mi. W of Arcata on Lanphere Rd. Comment
  JEPS70196  Dryopteris arguta Robert J. Rodin 1969-8-16 8368 Humboldt near Carlotta (near Van Duzen River) Comment
  CAS-BOT-BC197062  Echinochloa crus-galli Henry M. Pollard 1945-8-24 s.n. Humboldt Near Harley place Comment
  CAS-BOT-BC197063  Echinochloa crus-galli Carl D. Duncan 1920-9-22 s.n. Humboldt Hoopa Valley Comment
  HSC25284  Echinochloa crus-galli Thomas W. Nelson 1972-11-25 701 Humboldt Eureka, Harris and B St. Comment
  UCD60951  Echinochloa crus-pavonis Collector unknown 1926-7-1 Humboldt Annie Wilson Ranch, Alderpoint. Comment
  HSC58703  Eleocharis acicularis Griswold, Butler 1979-7-11 7086 Humboldt Near Twin Lakes, close to the town of Willow Creek 1417 Comment
  UC668027  Eleocharis acicularis Joseph P. Tracy 1935-5-30 10535 Humboldt Trinity Summit, Corral Prairie 1584 Comment
  CAS-BOT-BC112838  Eleocharis macrostachya David Daniels Keck 1938-8-5 4768 Humboldt Big Lagoon, on shore in drying clay mud. Comment
  CAS-BOT-BC112841  Eleocharis macrostachya Henry M. Pollard 1945-8-27 s.n. Humboldt Pond near Harley place. Comment
  HSC7335  Eleocharis obtusa Edward J. Kynoch 1966-9-23 410 Humboldt Near Trinity Rver and Willow Creek 142 Comment
  UC1103670  Eleocharis pachycarpa Joseph P. Tracy 1923-5-19 6213 Humboldt Patrick's Point 30 Comment
  HSC96566  Eleocharis pachycarpa Gordon Leppig 1997-6-19 449 Humboldt Big Lagoon Bog, Big Lagoon County Park 3 Comment
  CAS-BOT-BC113205  Eleocharis parishii Henry M. Pollard 1944-9-1 s.n. Humboldt Near Orleans Comment
  HSC64155  Elymus glaucus J. O. Sawyer, K. A. Sawyer 1979-6-24 3399 Humboldt Slopes alongside Aikens Creek. 366 Comment
  UC187094  Elymus glaucus J. P. Tracy 1902-7-4 1760 Humboldt Immediate vicinity of Eureka 0 Comment
  UC526796  Elymus glaucus Joseph P. Tracy Jul 16 1930-Jul 19 1930 8914 Humboldt near McKay Camp; Northern Coast Ranges, South Fork Mountain 1676 Comment
  HSC9745  Elymus glaucus subsp. glaucus D. E. Anderson 1962-7-10 2249 Humboldt Luffenholtz Beach, about 2 mi. S of Trinidad along old Hwy. 101 Comment
  HSC99111  Elymus lanceolatus subsp. lanceolatus Cara Witte 2007-6-14 273 Humboldt Along National Forest 1. Near Kinsey Ridge and cattle guard. 3 miles north of intersection with 4N09. 1393 Comment
  HSC9735  Elymus mollis subsp. mollis W. F. Cartwright 1965-5-10 67 Humboldt 1 mile W of Mckinleyville on the beach. Comment
  HSC8757  Elymus trachycaulus subsp. trachycaulus R. I. Bonn 1965-10-1 Humboldt 2 miles N of Bridgeville on Kneeland-Bridgeville Rd. 732 Comment
  RSA10129  Elymus trachycaulus subsp. trachycaulus Joseph P. Tracy 1926-7-5 7736 Humboldt Valley of South Yager Creek. 762 Comment
  HSC56983  Epilobium brachycarpum Overton, Marvin Butler 1979-7-23 9524 Humboldt Near Titlow Hill, close to the town of Willow Creek. 1280 Comment
  RSA167259  Epilobium brachycarpum Joseph P. Tracy 1950-9-10 19356 Humboldt Bear River Ridge 610 Comment
  UC505111  Epilobium brachycarpum Joseph P. Tracy 1932-5-22 10112 Humboldt between Miranda and Redway; North Coast Ranges, South Fork of Eel River 91 Comment
  JEPS31509  Epilobium campestre Joseph P. Tracy 1938-7-5 16009 Humboldt flat by old Strong's District School House (5 mi e of town); Carlotta 45 Comment
  CAS-BOT-BC166892  Epilobium canum subsp. latifolium Doris K. Kildale 1925-9-10 1110 Humboldt Bug Creek 792 Comment
  CAS-BOT-BC166893  Epilobium canum subsp. latifolium Henry M. Pollard 1944-9-8 s.n. Humboldt Orleans Mt. 1524 Comment
  CDA30723  Epilobium ciliatum M. K. Beyers, I. Shepardson 2009-9-13 253 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
  HSC54025  Epilobium ciliatum Griswold, Butler 1979-7-12 7194 Humboldt Near Groves Prairie, close to the town of Willow Creek. 1256 Comment
  POM225511  Epilobium ciliatum subsp. ciliatum P. A. Munz 1936-8-12 14379 Humboldt Willow Creek Comment
  HSC27041  Epilobium ciliatum subsp. ciliatum Brad Klipfel 1973-8-25 288 Humboldt Near Lazy L Ranch, Fickle Hill Rd. Comment
  JEPS39328  Epilobium ciliatum subsp. ciliatum Joseph P. Tracy 1918-7-6 5046 Humboldt near Humboldt-Mendocino County line (i.e. near Richardson Grove); Northern Coast Ranges, South Fork of Eel River 152 Comment
  HSC76625  Epilobium ciliatum subsp. glandulosum Teresa Prendusi 1981-7-24 481 Humboldt Near Whiteys Peak 1585 Comment
  UC198605  Epilobium densiflorum Joseph P. Tracy 1917-9-3 4852 Humboldt Janes Ranch Northern Coast Ranges, Grouse Mt. (lower w slopes of mt.) 914 Comment
  HSC44595  Epilobium hallianum Brad Klipfel 1973-7-15 191 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  POM247176  Epilobium hornemannii subsp. hornemannii Joseph P. Tracy 1935-7-24 14183 Humboldt Trinity Summit, near ranger station 1829 Comment
  HSC78650  Epilobium minutum D. K. Imper 1982-7-13 1484 Humboldt Near Chaparral Mtn. 1386 Comment
  HSC97478  Epilobium minutum C. Witte 2007-5-23 87 Humboldt Approximately 2 miles from intersection with 4N70 (Grouse Mountain Lookout Road) on 4N32. 1395 Comment
  HSC45063  Epilobium minutum R. Sutherland 1978-4-23 17 .23478 Humboldt Kinsey Ridge near head 732 Comment
  HSC71824  Epilobium minutum Thomas W. Nelson, Jane P. Nelson 1980-6-27 5938 Humboldt Along old trail to pond above Alder Spring, 0.5 mi. N of campground 1555 Comment
  RSA23648  Epilobium septentrionale Carl B. Wolf 1939-7-8 9521 Humboldt North bank of Matolle River, 2 miles above Petrolia. 61 Comment
  HSC39177  Epipactis gigantea D. E. Anderson, J. P. Smith 1971-6-28 1224 Humboldt Along Mad River, 2 mi. S of Blue Lake. Comment
  HSC61024  Equisetum arvense Jimerson, J. Pageau 1979-8-10 723 Humboldt Near Tish Tang A Tang Ridge, close to the town of Hoopa 1464 Comment
  JEPS60147  Equisetum arvense W. L. Jepson 1932-7-24 16378 Humboldt near Camp Grant (bank of main Eel River); Eel River 91 Comment
  RSA239686  Equisetum laevigatum Larry E. DeBuhr 1973-4-23 990 Humboldt Richardson Grove Redwood State Park. Comment
  RSA53858  Equisetum laevigatum Henry M. Pollard 1946-8-27 s.n. Humboldt South side of Klamath River, near Boyce Creek Orleans region Comment
  UC1239786  Equisetum telmateia subsp. braunii Joseph P. Tracy 1937-3-21 15235 Humboldt Van Duzen River near Grizzly Creek; Van Duzen River 91 Comment
  UC211495  Equisetum telmateia subsp. braunii Chesnut and Drew 1888-8-1 Humboldt Grouse Creek Comment
  HSC879  Equisetum telmateia subsp. braunii D. E. Anderson 1962-11-7 2343 Humboldt Jct. of Crannell Rd. and Dows Prairie Rd. Comment
  UC1103229  Eragrostis cilianensis Joseph P. Tracy 1923-9-16 6558 Humboldt Trinity River Valley mouth of South Fork of Trinity (near the South Fork); Northern Coast Ranges, mouth of South Fork of Trinity 152 Comment
  UC1103227  Eragrostis pilosa var. pilosa Joseph P. Tracy 1920-8-15 5361 1/2 Humboldt Klamath River mouth of Bluff Creek (mouth of Bluff Creek); Northern Coast Ranges, , Bluff Creek 152 Comment
  SEINET11836158  Erechtites argutus H. E. Parks, Parks, S. T. 1937-1 24033 Humboldt Spruce Cove, Trinidad 61 Comment
  CDA4544  Erechtites glomeratus E. Clayton 1956-5-7 Humboldt Eureka, Samoa Road., 200 yards south of Fairhaven. 0 Comment
  HSC91918  Erechtites minimus E. Mackey 1986-7-21 Humboldt Patricks Point State Park, near Wedding Rock Comment
  HSC96501  Erechtites minimus Gordon Leppig 1998-8-23 1076 Humboldt Big Lagoon County Park, Big Lagoon Bog 3 Comment
  RSA639200  Erica lusitanica Gary D. Wallace 1988-4-11 2806 Humboldt South of Eureka: Just north of Loleta on Hwy 101, just south of Loleta Drive. 60 Comment
  CAS-BOT-BC131506  Ericameria arborescens H. E. McMinn 1922-8-3 476 Humboldt Mt. slope above S.F., Eel River Comment
  CAS-BOT-BC298297  Ericameria nauseosa var. speciosa Henry M. Pollard 1944-9-8 s.n. Humboldt Orleans Mt 1524 Comment
  UC581775  Ericameria nauseosa var. speciosa Joseph P. Tracy 1929-8-18 8652 Humboldt Northern Coast Ranges, Larrabee Valley 701 Comment
  UC468817  Erigeron foliosus var. confinis Joseph Burtt Davy and Walter C. Blasdale Jun 20 1899-Jan 1 1900 5713 Humboldt Hoopa Valley North-Western California, Mendocino Comment
  UC34629  Erigeron foliosus var. mendocinus Chesnut and Drew 1888-7-10 Humboldt Mad River Comment
  UC175187  Erigeron foliosus var. mendocinus Joseph P. Tracy 1913-6-10 4082 Humboldt near Grizzly Gulch (bluffs along Van Duzen River); Northern Coast Ranges, Van Duzen River 152 Comment
  CHSC69497  Erigeron glaucus Vernon Oswald; Lowell Ahart 1997-9-4 8851 Humboldt North Spit of Humboldt Bay, west side of New Navy Base Rd. 1.1 mi south of Hwy. 255. 6 Comment
  HSC5524  Erigeron glaucus J. W. Johnson 1961-8-17 1036 Humboldt Dune fields of W.M. Lanphere Farm, Samoa Peninsula Comment
  CAS-BOT-BC295172  Erigeron inornatus Joseph P. Tracy 1933-8-6 12935 Humboldt French Camp Ridge 1066 Comment
  CAS-BOT-BC295173  Erigeron inornatus Doris K. Kildale 1925-8-17 1385 Humboldt Trinity Summit - near Ranger Station 1917 Comment
  HSC66280  Erigeron maniopotamicus M. A. Baker 1980-6-28 2479 Humboldt Near Mad River Buttes 1445 Comment
  HSC81688  Erigeron maniopotamicus Thomas W. Nelson, James Nelson 1980-6-10 5395 Humboldt Jack Rabbit Valley, along Swayback Ridge 4-wheel drive road, 1 mi. S of junction with Forest Service road 1494 Comment
  HSC95767  Erigeron maniopotamicus Thomas W. Nelson, Sydney Carothers 2004-6-18 9249 Humboldt Along Swayback Ridge Rd., which branches off Forest Service Rd. 1N08, 1/4 mi. past gate 1357 Comment
  HSC97812  Erigeron maniopotamicus Cara Witte 2007-6-22 339 Humboldt Board Camp Mountain. Road to Tri Board Camp. 1/5 mile after intersection with 4N38. 1486 Comment
  UC153941  Erigeron philadelphicus var. philadelphicus J. P. Tracy 1910-10-1 3162 Humboldt immediate vicinity Eureka 0 Comment
  CAS-BOT-BC300278  Erigeron strigosus var. strigosus L. R. Abrams 1918-6-16 7174 Humboldt Willow Creek Comment
  HSC31208  Eriodictyon californicum D. E. Anderson 1972-6-20 5737 Humboldt Along the Redwood Valley-Hoopa Rd., E of the summit. Comment
  JEPS57408  Eriogonum compositum var. compositum L. R. Heckard with T. I. Chuang 1968-7-5 1989 Humboldt 4 1/2 mi n along Mail Ridge road Harris Road (e of Garberville) 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
  UC183632  Eriogonum compositum var. compositum Joseph P. Tracy 1913-6-22 4262 Humboldt opposite Buck Mountain (Dinsmore's Ranch); Van Duzen River valley 762 Comment
  CAS-BOT-BC259181  Eriogonum latifolium H. E. Parks 1941-8-1 24198 Humboldt Little River Comment
  LA206939  Eriogonum latifolium Marcus E. Jones; 1931-7-12 28806 Humboldt Alton Comment
  SD38692  Eriogonum latifolium Edith A. Purer 1932-7-30 4669 Humboldt South of Orick, sand dunes Comment
  UCD100327  Eriogonum latifolium Linda M. Barker 1976-6-22 1615 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  HSC17297  Eriogonum latifolium P. W. Shields 1955-9-17 Humboldt 0.5 mi. S of Mad River Comment
  CAS-BOT-BC259529  Eriogonum luteolum var. luteolum Henry M. Pollard 1945-8-25 s.n. Humboldt Between Orleans & Camp Creek, Klamath River Canyon Comment
  CAS-BOT-BC259542  Eriogonum luteolum var. luteolum Mrs. E. C. Van Dyke 1931-6-30 s.n. Humboldt Willow Creek Comment
  CAS-BOT-BC259543  Eriogonum luteolum var. luteolum Henry M. Pollard 1943-1-1 s.n. Humboldt Orleans Comment
  UC1198103  Eriogonum luteolum var. luteolum J. P. Tracy 1900-9-10 957 Humboldt 6 mi above Hydesville (Van Duzen River bar); Van Duzen River 60 Comment
  CAS-BOT-BC261492  Eriogonum nudum var. nudum M. S. Jussel 1931-5-2 116 Humboldt Garberville Comment
  CAS-BOT-BC261493  Eriogonum nudum var. nudum Henry M. Pollard 1946-8-28 s.n. Humboldt Near summit of Orleans Mt. 1828 Comment
  CAS-BOT-BC261497  Eriogonum nudum var. nudum Doris K. Kildale 1927-5-15 3247 Humboldt Petrolia, bank of Mattole River Comment
  HSC38522  Eriogonum nudum var. oblongifolium D. E. Anderson, J. P. Smith 1971-6-18 1076 Humboldt Chezem Rd., about 3 mi. E of bridge over Redwood Creek Comment
  HSC72976  Eriogonum umbellatum D. K. Imper 1981-8-12 907 Humboldt Near Tish Tang A Tang Creek. 1780 Comment
  SEINET244744 Image available Eriogonum umbellatum 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. 1295 Comment
  JEPS56193  Eriogonum umbellatum var. argus W. L. Jepson 1902-7-25 2119 Humboldt Trinity Summit 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
  HSC48029  Eriophyllum lanatum Brad Klipfel 1974-6-25 425 Humboldt Horse Mtn. Comment
  UC34183  Eriophyllum lanatum var. achilleoides Harley P. Chandler May 1901 1234 Humboldt Humboldt Bay North Coast Ranges, Humboldt Bay 30 Comment
  UC165841  Eriophyllum lanatum var. arachnoideum Joseph P. Tracy 1906-7-15 2539 Humboldt Table Bluff Northern Coast, Region about Humboldt Bay, Table Bluff 0 Comment
  CAS-BOT-BC301388  Eriophyllum lanatum var. grandiflorum Harley P. Chandler 1901-6-1 1301 Humboldt North Coast Ranges. Hupa Indian Reservation 152 Comment
  UC165896  Eriophyllum lanatum var. grandiflorum Joseph P. Tracy 1911-7-6 3366 1/2 Humboldt hillslopes at w side of river near Willow Creek; Northern Coast Ranges, Trinity River 304 Comment
  UC76599  Eriophyllum lanatum var. grandiflorum Mrs. M. H. Manning 1900-1-1 Humboldt near Hupa Comment
  UC90272  Eriophyllum lanatum var. lanceolatum Volney Rattan Jul 1878 Humboldt Comment
  UC203994  Erodium botrys Joseph P. Tracy 1918-7-5 5026 Humboldt White Thorn Valley Northern Coast Ranges 304 Comment
  HSC78966  Erodium moschatum L. P. Janeway 1984-5-16 791 Humboldt N Spit of Humboldt Bay, W side of Samoa Rd., 0.25 mi. N of the boat ramp 3 Comment
  UC1222612  Eryngium aristulatum var. aristulatum Joseph P. Tracy 1951-6-21 19528 Humboldt in bed of former Goose Lake (back of Everett Beck house on ranch, Hydesville); Hydesville, , Everett Beck ranch house Comment
  CAS-BOT-BC41572  Erysimum capitatum Doris Kildale Gillespie 1931-6-7 10624 Humboldt South Fork Mount Blake Lookout. 1726 Comment
  UC492245  Erysimum capitatum Joseph P. Tracy 1932-7-18 10706 Humboldt head Brett Hole; Klamath Mountains, Trinity Summit 1828 Comment
  HSC44569  Erysimum capitatum var. capitatum Brad Klipfel 1973-7-15 187 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC64123  Erysimum capitatum var. capitatum J. P. Smith 1973-5-26 6791 Humboldt Scotia Bluffs along the Eel River near Rio Dell. Comment
  HSC6764  Erysimum capitatum var. capitatum Lincoln Constance 1934-6-22 919 Humboldt S Fork Eel River, summit of Grasshopper Peak down Canoe Creek Rd. to Redwood Hwy., and thense N to Dyerville Comment
  HSC96277  Erysimum capitatum var. capitatum Jennifer Lumbert, James Robinson 2005-6-15 13 Humboldt NE of Grouse Mtn., below road 1327 Comment
  HSC57645  Erysimum perenne G. L. Clifton, Terry Griswold 1979-7-25 10812 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1814 Comment
  UC666967  Erythronium californicum Joseph P. Tracy 1938-6-13 15896 Humboldt Horse Mountain 1432 Comment
  HSC98625  Erythronium californicum Cara Witte 2007-5-26 659 Humboldt National Forest 1. 1/2 mile south of intersection with Forest Service Roads 6N38 and 6N36. 1458 Comment
  HSC102051  Erythronium grandiflorum M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-13 955 Humboldt Patterson Meadows 1555 Comment
  UC666961  Erythronium grandiflorum Joseph P. Tracy 1933-7-11 12708 Humboldt Grouse Mountain 1524 Comment
  HSC15500  Erythronium oregonum subsp. leucandrum D. E. Anderson 1963-3-23 2400 Humboldt 2 mi. N of Beaver School Comment
  RSA367654  Erythronium revolutum Thomas W. Nelson 1976-4-3 2283 Humboldt Hwy 36 at east end of Swains Flat. Comment
  UC146200  Erythronium revolutum Joseph P. Tracy 1908-6-9 2661 Humboldt Northern Coast Ranges, Kneeland Prairie 762 Comment
  HSC58818  Eucephalus ledophyllus Gilbert Muth 1979-8-1 12103 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1877 Comment
  UC1199298  Eucephalus tomentellus Joseph P. Tracy 1930-7-19 9083 Humboldt near McKay Camp; South Fork Mountain 1676 Comment
  UC205151  Eucephalus tomentellus Joseph P. Tracy 1919-9-27 5304 Humboldt Mountain slopes along road between three Creeks and mouth of Willow Creek Willow Creek 914 Comment
  HSC49682  Euchiton sphaericus J. O. Sawyer 1977-7-1 2990 Humboldt Aikens campground. Comment
  JEPS34035  Euchiton sphaericus W. L. Jepson 1936-8-15 17898 Humboldt 2 mi e Carlotta Comment
  CAS-BOT-BC310489  Euchiton sphaericus Joseph P. Tracy 1915-9-12 4677 Humboldt Northern Coast Ranges. Mouth of Laribee Creek 60 Comment
  CAS-BOT-BC310495  Euchiton sphaericus John Thomas Howell 1936-8-29 12888 Humboldt Eel River 16 miles n. of Garberville Comment
  HSC100937  Euonymus occidentalis Miss Handy Jun 1886 335 Humboldt Maple Cr. Comment
  UC1198970  Euphorbia crenulata Joseph P. Tracy 1912-8-1 3960 Humboldt opposite Buck Mountain (Dinsmore's Ranch, in Valley of Van Duzen River); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  RSA602487  Euphorbia helioscopia D. Koutnik 1996-7-3 s.n. Humboldt Manila. Comment
  UC419045  Eurybia radulina H. E. Parks, J. P. Tracy 1930-9-15 769 Humboldt Kneeland Bald Hills Comment
  UC1199327  Euthamia occidentalis Joseph P. Tracy 1939-10-7 16506 Humboldt Willow Creek Trinity River Valley 152 Comment
  HSC96650  Euthamia occidentalis Thomas W. Nelson, Dick Brummitt, Barbara Ertter 2004-7-4 9282 Humboldt Trinity River Bar down stream from the mouth of Willow Creek 152 Comment
  SEINET4206010  Fallopia convolvulus Chesnut, Drew 1888-7-25 s.n. Humboldt Grouse Creek Comment
  UCD98908  Fallopia sachalinensis T. C. Fuller 1960-8-25 4973 Humboldt W/Hwy 101, 1/4 mi. N/Humboldt Hill Rd., Eureka. Comment
  HSC31183  Festuca californica D. E. Anderson 1972-6-20 5752 Humboldt Along the Redwood Valley-Hoopa Rd., E of the summit. Comment
  HSC96234  Festuca californica Sara March , Gillian Levy 2005-6-3 6 Humboldt 19.3 mi S of Hwy 299 on NF1 1240 Comment
  UC34070  Festuca californica J. P. Tracy 1901-6-23 1175 Humboldt immediate vicinity Eureka 0 Comment
  RSA273307  Festuca californica var. californica Thomas W. Nelson, Jane P. Nelson 1976-6-16 2740 Humboldt West of Alder Springs along 2S07. 1524 Comment
  UC187111  Festuca elmeri J. P. Tracy 1903-5-23 1899 Humboldt Alder Point, on Eel River Eel River 243 Comment
  RSA121314  Festuca idahoensis H. S. Yates 1936-6-17 5697 Humboldt Lower N.W. slope of Buck Mountain 793 Comment
  CAS-BOT-BC278814  Festuca occidentalis Alice Eastwood; John Thomas Howell 1937-6-22 4713 Humboldt Near Harris Comment
  UC187102  Festuca occidentalis J. P. Tracy 1900-5-22 796 Humboldt immediate vicinity Eureka 0 Comment
  HSC9947  Festuca occidentalis D. W. C 1956-4-30 Humboldt Matole River Area Comment
  RSA126626  Festuca rubra H. L. Person 1932-5-11 s.n. Humboldt Near Arcata 0 Comment
  UCD66367  Festuca rubra Linda M. Barker 1976-6-22 1617 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  SEINET200340 Image available Festuca subulata Joseph P. Tracy 1937-7-25 15541 Humboldt Head of Little Hors-Linto Creek [Horse Linto Creek] 1372 Comment
  UC277198  Festuca subulata Joseph P. Tracy 1921-6-4 5812 Humboldt Alton Northern Coast Region 30 Comment
  UCD66438  Festuca subulata Joseph P. Tracy 1937-7-25 15541 Humboldt Trinity Summit, Head of Little Hors-Linto Creek. 1371 Comment
  HSC9949  Festuca subuliflora L. M. Malloy 1965-5-20 32 Humboldt Old county dump, 5 mi. from Arcata on Fickle Hill Rd. Comment
  JEPS75445  Festuca subuliflora W. L. Jepson 1934-5-7 16710 Humboldt Buckeye Prairie, Bull Creek Comment
  HSC21492  Foeniculum vulgare Wm. F. Bowman 1968-11-9 Humboldt Along E edge of Humboldt Bay, along elevated area near railroad tracks. Comment
  UCD113170  Fragaria ananassa subsp. cuneifolia Linda M. Barker 1976-6-14 1590 Humboldt 3 miles west of Arcata. Comment
  CHSC27897  Fragaria chiloensis Phil Blumert 1978-3-25 1 Humboldt Along beaches, ca. 100 m w of intersection of 'C' Rd and Ocean View Drive, Patrick's Point 5 km n of Trinidad. Comment
  RSA46479  Fragaria chiloensis Doris K. Kildale 1927-3-24 2947 Humboldt Fleener Creek Comment
  CAS-BOT-BC457921  Fragaria vesca subsp. californica Doris K. Kildale 1929-4-27 7461 Humboldt Willow Creek - Selya road, 3 miles north of Willow Creek, in Trinity River Comment
  UCD113269  Fragaria virginiana Gunter Staudt; H. Ahmadi 1989-5-15 313 Humboldt North of Trinidad along Highway, near Seawood Drive exit. Comment
  HSC41331  Frangula californica Brad Klipfel 1974-9-17 572 Humboldt Horse Mountain Comment
  CAS-BOT-BC52732  Frangula californica subsp. californica L. R. Abrams 1918-6-16 7138 Humboldt Willow Creek Comment
  CAS-BOT-BC52743  Frangula californica subsp. californica Doris K. Kildale 1927-7-3 3653 Humboldt Willow Creek Flat 152 Comment
  CAS-BOT-BC59965  Frangula purshiana A. A. Heller 1923-7-9 13775 Humboldt About 5 mi. e. of Arcata on the road to Blue Lake. Comment
  CAS-BOT-BC59992  Frangula purshiana Doris K. Kildale; J. W. Gillespie 1929-6-25 8394 Humboldt Pive's Pasture, Eureka. Comment
  HSC63001  Frangula purshiana David Wheeler 1979-5-17 114 Humboldt Stagecoach Rd., 1 mi. from the Trinidad Post Office Comment
  SD37645  Frangula purshiana Edith A. Purer 1933-5-10 3625 Humboldt none listed Comment
  SBBG4629  Frangula purshiana subsp. purshiana M. J. Cody 1938-7-10 Humboldt near Trinidad Comment
  CAS-BOT-BC217694  Fraxinus latifolia Joseph P. Tracy 1928-4-22 8414 Humboldt Willow Creek, Trinity River Valley 152 Comment
  HSC15542  Fritillaria affinis Paul Shields May 1955 Humboldt Patricks Point State Park Comment
  UC15016  Fritillaria affinis Mrs. M. H. Manning 1900-1 Humboldt near Hupa Comment
  HSC41592  Galium ambiguum subsp. siskiyouense Thomas W. Nelson, Jane P. Nelson 1977-7-1 3558 Humboldt Along ridge between Bear Creek and Blanket Creek 1494 Comment
  SEINET11117327  Galium anglicum Unknown 1916-1 4730 Humboldt Alder Point, 500 ft. Comment
  HSC32325  Galium aparine D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5666 Humboldt Senteney Rock, a large barren Franciscan Rock along Swayback Ridge. Comment
  HSC37854  Galium aparine Peter Sorensen 1976-6-2 Humboldt Woodley Island, Humboldt Bay Comment
  HSC99827  Galium aparine Jimerson, Pageau 1979-6-13 541 Humboldt Near Slate Creek Butte, close to the town of Orleans 549 Comment
  POM148009  Galium aparine J. B. Feudge 1923-7-29 727 Humboldt Rohnerville. 15 Comment
  HSC19850  Galium aparine J. W. Johnson 1962-4-18 1262 Humboldt Between the Mad River mouth and the Hunt Farm, Samoa Peninsula Comment
  HSC70981  Galium bolanderi Gail Newton 1980-7-22 1664 Humboldt Near Devils Backbone 1554 Comment
  HSC71791  Galium bolanderi Gail Newton 1980-6-16 179 Humboldt Near Monks Camp. 1097 Comment
  HSC98081  Galium bolanderi Cara Witte 2007-7-3 415 Humboldt Along National Forest 1. 1/4 mile north of Road V. 1268 Comment
  RSA273400  Galium bolanderi Thomas W. Nelson, Jane Nelson 1976-7-1 2896 Humboldt North of Bear Creek 1463 Comment
  JEPS6481  Galium divaricatum Joseph P. Tracy 1920-7-11 5343 Humboldt 2 mi se Arcata; Fickle Hill 304 Comment
  JEPS52848  Galium muricatum Lauramay T. Dempster and G. L. Stebbins 1963-7-10 3858 Humboldt 6.8 mi w mouth of Bull Creek; Bull Creek (settlement) 91 Comment
  UC1225913  Galium muricatum Joseph P. Tracy 1942-7-1 17359 A Humboldt opposite Buck Mountain (along river); Van Duzen River, Dinsmore's 762 Comment
  UC35333  Galium muricatum Chesnut and Drew 1888-7-12 Humboldt Campbell's Comment
  SEINET11117326  Galium parisiense Unknown 1913-1 4083 Humboldt Rogers ranch, below Bridgeville on Van Duzen River, on dry rocky slopes. Altitude 500 ft. Comment
  UC175682  Galium porrigens Joseph P. Tracy 1912-7-26 3863 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  POM90778  Galium trifidum Chesnut, E. R. Drew 1888-7-8 s.n. Humboldt Near Campbell's. Comment
  HSC24403  Galium triflorum J. O. Sawyer 1970-6-24 2279 Humboldt W of Mill Creek Lakes. 1677 Comment
  UC169032  Galium triflorum Joseph P. Tracy 1908-6 2862 Humboldt opposite Buck Mountain; Northern Coast Ranges, valley of Van Duzen River 762 Comment
  HSC37947  Gamochaeta ustulata Peter Sorensen 1976-6-16 Humboldt Humboldt Bay; Woodley Island Comment
  HSC22830  Garrya elliptica Gene S. Van Horn 1963-1-5 35 Humboldt On W.M. Lanphere's ranch 9 Comment
  UCSB15521  Garrya elliptica Breedlove, Dennis 1962-6-7 Humboldt 1.5 miles south of Samosa on peninsula on western side of Humboldt Bay. Comment
  CAS-BOT-BC58919  Gaultheria shallon Harley P. Chandler 1901-5-1 1161 Humboldt unspecified 30 Comment
  UCSB19651  Gaultheria shallon Lowery, Jos. 1962-08 Humboldt Willow Springs, Mts. ca. 30 mi. E of Eureka 457 Comment
  HSC55224  Gayophytum diffusum subsp. parviflorum G. L. Clifton, Griswold 1979-8-2 12402 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  JEPS27564  Gayophytum diffusum subsp. parviflorum Joseph P. Tracy Jul 16 1930-Jul 19 1930 9051 Humboldt along summit near Blake Lookout; Northern Coast Ranges, South Fork Mountain 1737 Comment
  RSA46841  Gayophytum diffusum subsp. parviflorum Doris K. Kildale 1927-7-22 3808 Humboldt Lasseck s Peaks Comment
  UC198620  Gayophytum diffusum subsp. parviflorum Joseph P. Tracy 1917-9-2 4850 Humboldt Grouse Mt. Northern Coast Ranges (slopes high up) 1524 Comment
  CAS-BOT-BC208036  Genista monspessulana Aven Nelson; Ruth A. Nelson 1933-5-15 580 Humboldt Redwood highway near Crescent City Comment
  CAS-BOT-BC217417  Gentiana plurisetosa D. H. Esplin 1969-10-14 20 Humboldt One mile north of North Trinity Mountain, Six Rivers N.F. 1828 Comment
Read comments
Dec 21 2017
  UC1197400  Geranium carolinianum Joseph P. Tracy 1912-6-30 3712 Humboldt Eureka, at the Stephen Hill place Northern Coast Region 0 Comment
  UC195434  Geranium dissectum Joseph P. Tracy 1915-6-27 4656 Humboldt Carlotta 60 Comment
  JEPS61433  Geranium molle W. L. Jepson 1902-6-25 1933 Humboldt Korbel to Angel's Ranch Comment
  UC1541358  Geranium molle Harold E. Parks May 1934 4323 Humboldt Spruce Cove Trinidad Comment
  HSC97970  Gilia capitata subsp. capitata Cara Witte, Michael Scott 2007-6-22 346 Humboldt Board Camp Mountain, jeep trail between Tri Board Camp and Fork Camp 1565 Comment
  CAS-BOT-BC226144  Gilia capitata subsp. pacifica Mrs. G. Earle Kelly 1924-6-1 s.n. Humboldt Castle Island near Crescent City Comment
  CAS-BOT-BC226151  Gilia capitata subsp. pacifica Doris K. Kildale 1927-5-15 3295 Humboldt Mattole River Valley Comment
  UC427877  Gilia capitata subsp. pacifica H. E. Parks, J. P. Tracy 1930-5-25 793 Humboldt near Bridgeville; near Bridgeville Comment
  HSC104328  Gilia capitata subsp. pacifica James Regan, Humboldt Redwood Co., LLC 2010-6-23 24 Humboldt Monument Ridge, near Brushy Creek 915 Comment
  CHSC52941  Gilia millefoliata L. P. Janeway 1984-4-11 731 Humboldt On the North Spit of Humboldt Bay; Northwest of the boat ramp and north of the Coast Guard Sta. 4 Comment
  JEPS16254 Image available Gilia millefoliata J. P. Tracy 1903-6-12 1921 Humboldt immediate vicinity Eureka; ; Eureka, Humboldt Co. 0 Comment
  JEPS86031  Gilia millefoliata Joseph P. Tracy 1936-5-30 14833 Humboldt near Samoa (on Humboldt Bay); Northern Coast Region, , near Samoa 6 Comment
  SD197869  Gilia millefoliata Peter L. Morrell 1993-6-9 280 Humboldt Samoa Peninsula near Eureka, along Highway 255, 1.5 mile south of Samoa intersection, west side of highway. 7 Comment
  UC1051596  Gilia millefoliata Joseph P. Tracy 1948-6-12 18067 1/2 Humboldt near Samoa (on Humboldt Bay, sand dunes); on Humboldt Bay, near Samoa 6 Comment
  SEINET10464457  Githopsis diffusa subsp. robusta Lincoln Constance 1934-6-15 Constance 819 Humboldt Grassy summit of Grasshopper Peak; Bull Creek watershed 975 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
  JEPS14217  Glehnia littoralis subsp. leiocarpa Joseph P. Tracy 1927-6-26 8207 Humboldt beach along ocean Stone Lagoon 6 Comment
  HSC90679  Glyceria declinata Gail Newton 1982-6-10 3591 Humboldt Elk River Wildlife Area, Eureka Comment
  RSA550895  Glyceria declinata R. F. Thorne, P. Everett 1965-8-9 35346 Humboldt Along Highway 101 about 3 miles north of Eureka. 2 Comment
  HSC99484  Glyceria elata K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-14 143 Humboldt Near North Trinity Mtn, 11. 9 mi east of Hoopa on Big Hill Rd (8N01), at Box Camp, Six Rivers National Forest. 1372 Comment
  UC526907  Glyceria fluitans Joseph P. Tracy 1933-7-20 12801 Humboldt Arcata Bottom; North Coast Ranges 15 Comment
  HSC10089  Glyceria striata J. P. Tracy 1925-6-13 7086 Humboldt Eureka 0 Comment
  HSC40385  Glyceria striata Thomas W. Nelson, James Nelson 1976-7-28 3078 Humboldt W of Alder Springs. 1524 Comment
  HSC70848  Glyceria striata M. A. Baker 1980-6-7 1825 Humboldt Near Ammon Creek. 732 Comment
  UC1103751  Glyceria striata Joseph P. Tracy 1903-6-14 1922 Humboldt Eureka; Northern Coast Region 0 Comment
  JEPS34013  Gnaphalium palustre W. L. Jepson 1921-8-11 9414 Humboldt Big Lagoon Comment
  CDA6019  Gnaphalium palustre E. C. Whitney 1961-7-2 Humboldt A. Hartman property, McKinnleyville. 0 Comment
  JEPS34049  Gnaphalium palustre Lincoln Constance 1934-6-12 871 Humboldt Bull Creek road and n bank of South Fork Eel River (Dyerville); , Bull Creek Region, Dyerville Comment
  RSA638984  Gnaphalium stramineum Percy C. Everett 1965-8-6 35171 Humboldt Samoa Dunes. 3 Comment
  HSC54861  Goodyera oblongifolia G. L. Clifton, Griswold 1979-7-25 10762 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1814 Comment
  CAS-BOT-BC304731  Grindelia hirsutula Joseph P. Tracy 1918-7-7 5038 Humboldt Northern Coast Ranges. Near Garberville 121 Comment
  CAS-BOT-BC304748  Grindelia hirsutula A. A. Heller 1923-7-7 13764 Humboldt Along the Redwood highway, near the Eel River bridge south of Garberville Comment
  SEINET11835894  Grindelia hirsutula var. davyi Unknown 1936-1 13195 Humboldt near Ukiah Comment
  CDA6170  Grindelia stricta var. stricta T. C. Fuller 1961-9-27 7043 Humboldt 1 mile north of Indianola Road, Highway 101, 5 miles north of Eureka. 0 Comment
  RSA640949  Grindelia stricta var. stricta R. F. Thorne, Percy C. Everett 1965-8-8 35278 Humboldt N edge of Eureka, E of Hwy 101. 3 Comment
  HSC56345  Hackelia bella Griswold, Butler 1979-7-10 6282 Humboldt Near Board Camp Mtn., close to the town of Willow Creek 1372 Comment
  UC449871  Hackelia bella P. E. Goddard 1906-6 677 Humboldt Sasseck Peak Comment
  RSA249328  Hackelia bella D. E. Anderson, Thomas Nelson, S. Dowty 1972-6-13 5571 Humboldt Westward lower slopes of Black Lassic near Trinity County line 1585 Comment
  POM182422  Hazardia whitneyi var. discoidea Joseph P. Tracy 1919-9-27 5304 Humboldt Mountain slopes along road between Three Creeks and mouth of Willow Creek. 915 Comment
  HSC99503  Helenium bigelovii K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-22 163 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
  JEPS35027  Helenium bolanderi Joseph P. Tracy 1937-7-16 15431 Humboldt Trinidad 60 Comment
  RSA695692  Helenium puberulum J. R. Bruff 1937-8-17 943 Humboldt Richardson Grove. Comment
  UC204746  Helminthotheca echioides Joseph P. Tracy 1918-7-1 4969 Humboldt southwestern slopes fronting the ocean three mi s of point Cape Mendocino; Northern Coast Ranges, Cape Mendocino 3 Comment
  CAS-BOT-BC309994  Hemizonia congesta subsp. tracyi S. K. Harris 1936-6-20 s.n. Humboldt Bluff above Van Duzen River about 1 mile west of Bridgeville Comment
  UC1173664  Hemizonia congesta subsp. tracyi Joseph P. Tracy 1939-8-10 16400 Humboldt Kneeland Prairie 762 Comment
  UC1199366  Hemizonia congesta subsp. tracyi Joseph P. Tracy 1940-10-17 16768 Humboldt Camp Grant, Eel River 45 Comment
  UC495621  Hemizonia congesta subsp. tracyi Joseph P. Tracy 1932-8-21 10364 Humboldt Chaparral Mt., Three Cabins 457 Comment
  SEINET7887160 Image available Hemizonia congesta subsp. tracyi S. K. Harris 1936-1 699 Humboldt above Van Duzen River about 1 mile west of Bridgeville Comment
  UC642335  Heracleum lanatum Joseph P. Tracy 1934-7-27 13491 Humboldt near mouth Mad River 15 Comment
  HSC90261  Heracleum maximum Jean Hanson 1980-5-24 73 Humboldt Indian (Gunther) Island, Humboldt Bay, city of Eureka. W end of island Comment
  CAS-BOT-BC388492  Herniaria hirsuta var. cinerea Henry M. Pollard 1946-8-13 s.n. Humboldt Klamath River, near Orleans Comment
  UC1199420  Hesperevax acaulis var. robustior Joseph P. Tracy 1937-5-31 15322 Humboldt Trinity River Valley at Willow Creek; Trinity River Valley 152 Comment
  UC168968  Heterocodon rariflorum Joseph P. Tracy 1905-7-6 2199 Humboldt Eureka; Northern Coast Region 0 Comment
  SEINET10460687  Heterocodon rariflorum Lincoln Constance Constance 915 Humboldt GRASSHOPPER PEAK 3000 Comment
  CAS-BOT-BC143655  Heteromeles arbutifolia Doris K. Kildale 1928-7-1 5315 Humboldt Klamath RIver at mouth of Bluff Creek Comment
  UC154509  Heteromeles arbutifolia P. E. Goddard 1901-7-9 48 Humboldt Hupa Comment
  JEPS49746  Heuchera micrantha var. diversifolia Harley P. Chandler May 1901 1231 Humboldt North Coast Ranges 457 Comment
  CAS-BOT-BC424198  Heuchera micrantha var. hartwegii Myrtle Paulson 1918-4-28 s.n. Humboldt Eureka Comment
  HSC56042  Heuchera rubescens G. L. Clifton, Griswold 1979-7-31 11617 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1719 Comment
  HSC81659  Hieracium albiflorum Thomas W. Nelson, Jane P. Nelson 1980-7-13 6066 Humboldt Along the road from Dinsmore to Anderson Ford-McKeown Ranch Rd. 762 Comment
  HSC98820  Hieracium albiflorum Cara Witte 2008-7-30 963 Humboldt Spike Buck Mountain. Forest Service Road 5N18. 1/2 mile from intersection with National Forest 1. 1589 Comment
  UC582417  Hieracium albiflorum Joseph P. Tracy 1929-7-4 8613 1/2 Humboldt French Camp Ridge 1066 Comment
  UC34535  Hieracium albiflorum Chestnut and Drew 1888-7-12 Humboldt Jarnigan's Comment
  RSA168836  Hieracium bolanderi Joseph P. Tracy 1947-7-9 17849 Humboldt Horse Mountain 1432 Comment
  SEINET11847768  Hieracium bolanderi J. P. Tracy 1947-1 17849 Humboldt Horse Mountain Comment
  HSC57935  Hieracium greenei G. L. Clifton, Griswold 1979-7-31 11587 Humboldt Near Trinity Summit Guard Station, close to Hoopa 1884 Comment
  HSC66826  Hieracium greenei Gail Newton 1980-7-15 1579 Humboldt Near Sims Mtn. 1311 Comment
  HSC74477  Hieracium greenei Gail Newton 1980-7-24 1765 Humboldt Near Somes Mtn. 1615 Comment
  UC582411  Hieracium greenei Joseph P. Tracy 1935-7-30 14358 Humboldt Salmon Summit 1767 Comment
  POM360469  Hieracium greenei Thomas W. Nelson, Jane P. Nelson 1977-8-6 3714 Humboldt Along the lower south slope of Mt. Lassic (Signal Peak). 1494 Comment
  CAS-BOT-BC316006  Hieracium nudicaule Henry M. Pollard 1943-8-1 s.n. Humboldt New Orleans Comment
  JEPS45722  Hippuris vulgaris W. L. Jepson 1921-8-7 9335 Humboldt Stone Lagoon Comment
  CAS-BOT-BC280738  Holcus lanatus Ashley C. Browne 1936-6-11 s.n. Humboldt Patrick's Point State Park Comment
  HSC39956  Holcus lanatus Linda M. Barker 1976-6-22 1614 Humboldt 3 mi. W of Arcata Comment
  HSC59438  Holcus lanatus Kenneth Clark 1979-4-21 144 Humboldt Little River flood plain (alluvium), 4.5 miles from McKinleyville, 200 yards E of Hwy. 299 Comment
  HSC89550  Holcus lanatus M. Roantree 1985-5-7 42 Humboldt SW side of Trinidad Head, along trail Comment
  UC1541516  Holcus lanatus Harold E. Parks May 1933 4303 Humboldt Spruce Cove Trinidad; , Trinidad Comment
  SEINET10591413  Holcus lanatus Huron H. Smith 1911-1 Smith 3772 Humboldt Comment
  HSC64190  Holodiscus discolor J. O. Sawyer, M. A. Ericksen 1979-6-23 3378 Humboldt Slopes below Mill Creek Lakes 1585 Comment
  JEPS44652  Holodiscus discolor L. Constance 1934-6-4 812 Humboldt Look Prairie; Dyerville; Bull Cr. road; South Fork of Eel River; Look Prairie, and Bull Cr. road, to Dyerville. Comment
  RSA183531  Holodiscus discolor D. E. Anderson 1963-9-1 2806 Humboldt Near Kneeland. 732 Comment
  HSC89903  Hordeum brachyantherum Leonel Arguello 1989-6-11 Humboldt Lanphere-Christensen Dunes Preserve, 3 mi. W of Arcata Comment
  UC1103487  Hordeum brachyantherum subsp. brachyantherum Joseph P. Tracy 1942-9-20 17326 Humboldt 2 mi S of (town) Field's Landing 6 Comment
  UC1103489  Hordeum brachyantherum subsp. brachyantherum Joseph P. Tracy 1942-6-2 17094 Humboldt 1 mi E of town Alton 18 Comment
  RSA10124  Hordeum brachyantherum subsp. californicum Joseph P. Tracy 1933-6-6 12508 Humboldt Trinidad 9 Comment
  HSC10120  Hordeum marinum subsp. gussoneanum True Hoyle 1967-7-9 27967 Humboldt By the cattle guard at the W side of the Roy Fulton Ranch, Iaqua Gun Club, Big Bend of the Mad River above Maple Creek. 610 Comment
  UC34063  Hordeum marinum subsp. gussoneanum J. P. Tracy 1901-6-16 1144 Humboldt immediate vicinity Eureka; immediate vicinity Eureka 0 Comment
  HSC10224  Hordeum murinum subsp. glaucum R. T. Forester 1963-3-31 38 Humboldt 0.25 mi. N of Fairhaven on Samoa Rd. Comment
  BLMAR21  Hordeum murinum subsp. leporinum Brad Barr June, 1982 21 Humboldt King range, Spanish flat, smith cabin Comment
  HSC100516  Hosackia crassifolia Carl C. Marshall Jun 1886 239 Humboldt Near Mad River and E of Hoopa. Comment
  HSC40128  Hosackia oblongifolia var. oblongifolia Thomas W. Nelson, James Nelson 1976-7-28 3077 Humboldt Beside rd. to Pine Mtn. 1524 Comment
  UC24108  Hydrophyllum occidentale Mrs. Mary H. Manning Apr 1899 Humboldt Hoopa Valley Comment
  UC35519  Hydrophyllum occidentale W. C. Blasdale 1896-6-6 Humboldt McBride's Comment
  JEPS1642  Hydrophyllum tenuipes W. L. Jepson 1934-5-7 16691 Humboldt Bull Creek Comment
  CAS-BOT-BC400795  Hypericum anagalloides Doris K. Kildale 1925-8-17 1241 Humboldt Trinity Summit - Waterdog Lake 1828 Comment
  HSC13820  Hypericum anagalloides W. D. Stevens 1967-7-22 50 Humboldt Above dirt rd. from old Hwy. 101 to the top of the N bank of the Mad River Comment
  HSC91879  Hypericum anagalloides E. Mackey 1987-8-29 Humboldt Patrick's Point State Park, in woods near Palmer's Point Comment
  HSC13844  Hypericum perforatum F. Morrell 1949-5-14 22 Humboldt Weitchpec Comment
  UC1198413  Hypericum perforatum Joseph P. Tracy 1933-6-25 12628 Humboldt along Eel R. 2 to 5 mi. e. of S. Fork (Camp Grant); Eel R., Camp Grant 45 Comment
  HSC23147  Hypericum perforatum Thomas W. Nelson 1970-10-18 251 Humboldt Beside Hwy. 101, 100 yds. N of bridge over Mad River Comment
  HSC95115  Hypericum perforatum Andrea Pickart 2002-7-9 167 Humboldt Bracut Marsh, in a transitional zone between brackish and riparian 9 Comment
  UC249880  Hypochaeris glabra Joseph P. Tracy 1923-6-19 6303 Humboldt 762 Comment
  CAS-BOT-BC311436  Hypochaeris radicata Ashley C. Browne 1936-6-10 s.n. Humboldt Patrick's Point State Park Comment
  CAS-BOT-BC123494  Iliamna latibracteata Doris K. Kildale 1926-7-5 2312 Humboldt Prairie Creek, near Davidson's. Comment
  CAS-BOT-BC206850  Iliamna latibracteata Don Hagar 1957-6-20 L 10 Humboldt Cedar Creek Divide, 5.5 miles east of Willow Creek 1066 Comment
  RSA12528  Iliamna latibracteata Carl B. Wolf 1934-7-3 5909 Humboldt Redwood Hwy 3 miles north of Orick (Davison s Ranch on Prairie Creek) 61 Comment
  SEINET3225680 Image available Iliamna latibracteata Joseph P. Tracy 1926-6-12 7585 Humboldt Prairie Creek. 150 Comment
  UCD126379  Iliamna latibracteata D. C. Hagar 1957-6-20 L 10 Humboldt Cedar Creek Divide, 5.5 miles east of Willow Creek. 1066 Comment
  UC527558 Image available Iliamna latibracteata C. B. Wolf 1931-8-28 2367 Humboldt Redwood Highway, 3 miles north of Orick; Davison's Ranch on Prairie Creek 60 Comment
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Feb 27 2012
  UC902184 Image available Iliamna latibracteata Joseph P. Tracy 1948-8-15 18151 Humboldt near Elk Camp, on Ridge 2 miles east of Grove's Prairie; Trinity Summit. 1493 Comment
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Feb 27 2012
  HSC13893  Iris douglasiana W. F. Nickel 1965-4-23 Humboldt 10 mi. N of Arcata at Moonstone Beach Comment
  POM290985  Iris douglasiana Lyman Benson 1928-7-7 399 Humboldt Weott Ranger Station; seaward North Coast mt. range, South Fork Eel River drainage 61 Comment
  RSA24204  Iris macrosiphon Carl B. Wolf 1941-3-3 9993 Humboldt N. Coast Range, 1/2 miles N of Ettersburg on road to Honeydew. 305 Comment
  JEPS88845  Iris purdyi Carol A. Wilson 1992-4-26 92 -ph7 Humboldt se of Fortuna (at Bridgeville, where Hwy 36 crosses the bridge); Bridgeville 259 Comment
  HSC66483  Iris tenax subsp. klamathensis T. Jimerson, J. Pageau 1979-4-27 436 Humboldt FS Rd. 12N20, 0.2 mi. N of FS Rd. 15N01 (G.O. Rd.), Orleans 710 Comment
  RSA298350  Iris tenax subsp. klamathensis T. Jimerson, J. Pageau 1979-5-1 440 Humboldt 1.3 miles south of Hwy 96 on Ishi Pishi Road, west side of road, Orleans; aspect 52E 232 Comment
  RSA30641  Iris tenax subsp. klamathensis Lincoln Constance, Reed C. Rollins 1942-5-12 s.n. Humboldt Klamath River 2 miles north of Orleans. 122 Comment
  UC673161  Iris tenax subsp. klamathensis Lincoln Constance and Reed C. Rollins 1942-5-12 2893 Humboldt 2 mi. n. Orleans (Klamath River); Klamath-Siskiyou Region, Klamath River 121 Comment
  RSA0000278  Iris tenax subsp. klamathensis Lee W. Lenz 1953-5-13 18296 Humboldt Wooded hillsides along Klamath River, Orleans. 122 Comment
  RSA135920  Iris tenuissima Lee W. Lenz, E. K. Balls 1955-5-15 20734 Humboldt 15.8 miles southeast along U.S. Highway 299 from Willow Creek, towards Arcata 579 Comment
  CAS-BOT-BC88652  Isatis tinctoria Henry M. Pollard 1948-7-26 s.n. Humboldt Near mouth of Camp Creek, near Orleans. Comment
  SEINET200597 Image available Isoetes J. P. Tracy 1935-5-25 13842 Humboldt Fort Seward 107 Comment
  UC667940  Isoetes howellii Joseph P. Tracy 1937-8-12 15650 Humboldt Snow Camp 1402 Comment
  JEPS93174  Isolepis cernua Margriet Wetherwax and Kevin Downing 1993-8-9 2454 Humboldt s side of slough just past Pigeon Point (e side of road, near Bayside Rd and Myrtle, e side of bay, just n of Eureka); Humboldt Bay, Eureka Slough 5 Comment
  CAS-BOT-BC112456  Isolepis cernua Joseph Prince Tracy 1927-9-4 8363 Humboldt Sand Dunes, near Samoa on Humboldt Bay; depressions where water collects in winter.q 6 Comment
  CHSC96435  Isolepis setacea Gordon Leppig 1999-10-3 1257 Humboldt Big Lagoon County Park, Big Lagoon Bog. NAD 27 UTM Zone 10, 405321E 4557202N. 3 Comment
  HSC87619  Ixia maculata Jana Kattenhorn 1971-5-26 258 Humboldt HSU campus Comment
  RSA181881  Jaumea carnosa Joseph P. Tracy 1938-7-15 16072 Humboldt Mouth of Eel River. 3 Comment
  HSC102931  Juncus M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-13 934 Humboldt Patterson Meadows 1555 Comment
  RSA245249  Juncus breweri Tim Baroni 1971-6-26 69 Humboldt Out on the Samoa Peninsula, just opposite the Georgia Pacific pulp mill. Comment
  HSC99140  Juncus effusus Cara Witte 2008-7-28 945 Humboldt Buck Flat. Near intersection of National Forest 1 and Forest Service Road 5N01. 1591 Comment
  HSC44316  Juncus ensifolius Thomas W. Nelson, Jane Nelson 1977-9-3 3733 Humboldt Logging road to Pine Mtn., E of Pine Mtn. 1463 Comment
  UC1103035  Juncus ensifolius Joseph P. Tracy 1921-10-16 5970 Humboldt near Willow Creek (mouth of South Fork Trinity); Northern Coast Ranges, Trinity River Valley 152 Comment
  JEPS79913  Juncus falcatus var. falcatus Joseph P. Tracy 1925-10-18 7290 Humboldt Big Lagoon Northern Coast Region, Big Lagoon 6 Comment
  UC1196725  Juncus hesperius J. P. Tracy 1900-6-23 859 Humboldt immediate vicinity Eureka 0 Comment
  RSA42045  Juncus hesperius Ella Dales Cantelow 1936-8-28 1634 Humboldt 4 1/2 miles SW of Dinsmore s Comment
  JEPS63886  Juncus patens W. L. Jepson 1936-8-11 17871 Humboldt Phillipsville South Fork Eel River Comment
  RSA368144  Juncus patens J. P. Smith, Steve Selva 1970-6-14 3822 Humboldt Along Calif. 96 at Whitmore Creek. 152 Comment
  UC314634  Kalmia polifolia subsp. microphylla Joseph P. Tracy 1925-7-5 7177 Humboldt near High Prairie (Bald Mountain); Northern Coast Ranges, Bald Mountain 1066 Comment
  RSA79773  Keckiella corymbosa F. W. Peirson 1926-7-13 7060 Humboldt Mad River, near Blue Lake. Comment
  HSC55592  Kelloggia galioides G. L. Clifton, Griswold 1979-7-26 9366 Humboldt Near Salmon Mtn., close to the town of Forks of Salmon 1935 Comment
  JEPS11334  Kickxia elatine W. L. Jepson 1936-8-12 17878 Humboldt Phillipsville; South Fork Eel River Comment
  UC1222816  Kickxia elatine Joseph P. Tracy 1951-7-14 19623 Humboldt near Willow Creek (borders of Lack Pond); Lack Pond 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
  UC1152009  Koeleria macrantha Joseph P. Tracy 1951-6-24 19541 Humboldt between serpentine rockpile and Ashfield Butte Kneeland Prairie; , btw rockpile and Ashfield Butte 762 Comment
  UC50452  Koeleria macrantha Joseph Burtt Davy and Walter C. Blasdale 1899-7-30 6189 Humboldt Bear River Ridge Comment
  UCD86088  Koeleria macrantha Joseph P. Tracy 1936-8-2 15072 Humboldt Humboldt County. 1066 Comment
  UC154280  Kopsiopsis strobilacea Mrs. M. H. Manning 1901-1 Humboldt Hupa Valley Comment
  UC403006  Kopsiopsis strobilacea unknown 1901-1 Humboldt Comment
  UC249879  Lactuca serriola Joseph P. Tracy 1923-9-23 6561 Humboldt Alton Northern Coast Region 30 Comment
  UC1223224  Lapsana communis Joseph P. Tracy 1944-7-3 17482 Humboldt Graham's Peach Orchard, along road near old house, at Willow Creek Trinity River Valley, Willow Creek 152 Comment
  HSC27076  Lapsana communis Brad Klipfel 1973-8-25 292 Humboldt Across from Lazy L Ranch on Fickle Hill Rd. Comment
  HSC5898  Lapsana communis David Adams 1960-7-15 Humboldt Azalea Reserve State Park 30 Comment
  RSA46394  Lapsana communis Charles L. Pollard 1946-8-26 s.n. Humboldt Between Orleans and Camp Creek, Klamath River Canyon. Comment
  JEPS9904  Lasthenia californica subsp. californica Lincoln Constance 1934-6-3 809 Humboldt road from High Rock (on Redwood Hwy 1 mi n of Dyerville) to Horse Prairie; South Fork Eel River, Bull Creek Region Comment
  UC30471  Lasthenia californica subsp. macrantha Bolander Humboldt Comment
  HSC89316  Lathyrus aphaca Pat Daly 1989-4-14 Humboldt Mckinleyville, 4886 Cottage Grove Ave. Comment
  NY8451  Lathyrus biflorus T. W. Nelson 1980-6-10 5432 Humboldt Blocksburg Quadrangle. Serpentine on NE slope of Red Mountain 1371.6 Comment
  UC162794  Lathyrus glandulosus Joseph P. Tracy 1906-6-10 2474 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  JEPS55292  Lathyrus lanszwertii var. tracyi Jos. P. Tracy 1918-5-26 4943 Humboldt Janes Ranch Grouse Mt.; Janes Ranch, Grouse Mt., Humboldt Co. 914 Comment
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Jun 2 2013
  HSC40263  Lathyrus littoralis Linda M. Barker 1976-4-30 1409 Humboldt 3 mi. W of Arcata Comment
  HSC46964  Lathyrus littoralis J. P. Smith, Thomas W. Nelson 1977-6-30 9217 Humboldt Samoa Peninsula just E of the drag strip. Comment
  SD39835  Lathyrus littoralis Charlotte M. Hook 1931-7-15 2104 Humboldt Eureka Comment
  UCSB15805  Lathyrus littoralis Breedlove, Dennis 1962-6-7 Humboldt 1.5 miles south of Samoa on peninsula on western side of Humboldt Bay Comment
  SEINET956147  Lathyrus polyphyllus Joseph P. Tracy 1948-1 18118 Humboldt In fir forest, 1.5 miles north of Forest Service Public Camp on Trinity Summit Road. 1280 Comment
  UC709411  Lathyrus torreyi Joseph P. Tracy 1934-7-12 13378 Humboldt Big Lagoon 152 Comment
  HSC39197  Lathyrus torreyi D. E. Anderson, J. P. Smith 1971-7-6 - 1328 Humboldt 1.0 mi. W of Pine Ridge Summit, 6 mi. E of junction with Redwood Valley Rd. Comment
  UC1222398  Lathyrus vestitus Joseph P. Tracy 1949-7-4 18327 Humboldt 2 mi e Kneeland (on the Butter Valley Road) 609 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
  SD53195  Lathyrus vestitus var. vestitus Darley F. Howe 1962-5-21 3298 Humboldt 16 miles north of Garberville on Hwy 101 60 Comment
  HSC39786  Layia carnosa Peter Sorensen 1976-6-14 Humboldt N Spit Comment
  JEPS13464  Layia gaillardioides Joseph P. Tracy 1936-6-9 14875 Humboldt Bear River Ridge 609 Comment
  UC1223218  Layia gaillardioides Joseph P. Tracy 1942-6-15 17165 Humboldt 5 mi n Garberville 60 Comment
  SEINET3164358  Ledum glandulosum N. Dennis 1965-6-3 143 Humboldt Big Lagoon County Park; southwest corner of Big Lagoon Comment
  SEINET10482507  Ledum glandulosum Albert Kellogg, W. G. W. Harford 1868-1 Kellogg 635 Humboldt 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
  UCSC000838  Leontodon nudicaulis subsp. taraxacoides H. S. Reed 1941-7-26 s.n. Humboldt Common weed near Trinidad Trinidad Comment
  CAS-BOT-BC339130  Leontodon saxatilis subsp. saxatilis Alice Eastwood 1923-8-16 12340 Humboldt Carlotta Comment
  HSC89416  Leontodon saxatilis subsp. saxatilis P. A. Daly 1986-1-20 45 Humboldt Trinidad Head, along trail 61 Comment
  CAS-BOT-BC89855  Lepidium nitidum Doris K. Kildale 1928-5-27 5948 Humboldt Kneeland Prairie. 853 Comment
  CAS-BOT-BC12876  Lepidium strictum Elizabeth Parsons Hawver 1915-6-1 s.n. Humboldt Carlotta. Comment
  HSC97990  Leptosiphon ciliatus subsp. ciliatus Cara Witte 2007-7-8 431 Humboldt Board Camp Mountain. Pack trail 4E26. 1463 Comment
  JEPS20619  Lessingia nemaclada Joseph P. Tracy 1937-9-5 15681 Humboldt Willow Creek Trinity River Valley 152 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
  JEPS37563  Leucanthemum vulgare Lincoln Constance 1934-6-6 827 Humboldt Fire trail Dyerville tottorse Prairie; Bull Creek Region Comment
  SEINET3071950  Lewisia cotyledon var. howellii Lincoln Constance, Reed C. Rollins 1942-1 2885 Humboldt Mouth of Bluff Creek, 6 miles northeast of Weitchpec. 150 Comment
  HSC102128  Lewisia triphylla M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 1032 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  UC673015  Lewisia triphylla Joseph P. Tracy 1935-7-24 14178 Humboldt near Ranger Station; Trinity Summit 1828 Comment
  CAS-BOT-BC283514  Leymus X vancouverensis Malcom A. Nobs; S. Galen Smith 1949-8-3 1204 Humboldt Salt marshes bordering Humboldt Bay, ca 2 miles N of Eureka Comment
  UC184878  Leymus X vancouverensis Joseph P. Tracy 1912-7-7 3744 Humboldt Eureka Northern Coast Region (bay shore) 0 Comment
  RSA295817  Leymus vancouverensis Lyman Benson 1929-7-15 1818 Humboldt Clam Beach, Trinidad Comment
  UC1197172  Ligusticum apiifolium Joseph P. Tracy 1939-8-5 16379 Humboldt along Van Duzen R. below Dinsmore's; Van Duzen R. 762 Comment
  UC1101451  Lilaeopsis occidentalis Malcolm A. Nobs and S. Galen Smith 1949-8-3 1166 Humboldt 1 mi. s. Fields Landing (Eel R. Valley); Eel R. Valley Comment
  UCR39795  Lilium bolanderi D. K. Imper 1983-7-12 s.n. Humboldt Six Rivers National Forest. Along13N01 roadside c. 3.5 mi north of Blue Lake 915 Comment
  RSA256588  Lilium occidentale Thomas W. Nelson, Doris Niles 1974-6-24 s.n. Humboldt Wiggens Ranch just west of the garbage dump. Comment
  RSA12542  Lilium pardalinum Carl B. Wolf 1934-7-2 5896 Humboldt Small lake at Snow Camp (Mountains east of Korbel). 1372 Comment
  UC54669  Lilium rubescens Mrs. M. H. Manning 1900-1 Humboldt near Hupa Comment
  SD42236  Limnanthes douglasii Carl B. Wolf 1937-6-14 8818 Humboldt Kneeland Prairie 822 Comment
  HSC23110  Limnanthes douglasii Norman Dennis 1965-6-11 113 Humboldt 1/4 mi. S and 1 mi. E of the junction of Barry Ridge Rd. and the Eureka-Bridgeville county road, along Ashfield Ridge Rd. About 5 mi. SE of Kneeland 793 Comment
  UC1197414  Limnanthes douglasii Joseph P. Tracy 1927-6-5 8106 Humboldt valley of South Yager Creek Northern Coast Ranges 762 Comment
  HSC104130  Limonium californicum C. Sander 2005-9-23 33083 Humboldt South spit of Humboldt Bay. 3 Comment
  CDA39662  Limonium californicum T. C. Fuller 1961-9-27 7045 Humboldt 1 mile north of Indianola Road, Highway 101, 5 miles north of Eureka. 0 Comment
  SEINET7249786 Image available Limonium californicum C. C. Harris, S. K. Harris 1939-1 973 Humboldt South shore of Humboldt Bay Comment
  UC52735  Linanthus androsaceus Chesnut and Drew 1888-7-10 Humboldt Jarnigan's Comment
  UC162582  Linanthus filipes Joseph P. Tracy 1911-7-9 3456 Humboldt near Willow Creek (hill slopes at w side of Trinity River); Northern Coast Ranges, Trinity River 182 Comment
  UCR37554  Linaria canadensis var. texana L. P. Janeway 1983-5-19 299 Humboldt Samoa Peninsula c. 1/2 mi north of Eureka-Samoa bridge. Between RR tracks and old Samoa Road near W edge of Arcata Bay 3 Comment
  UC524126  Linaria vulgaris Ira L. Wiggins 1932-7-19 5890 Humboldt near Trinidad Head Comment
  CAS-BOT-BC416392  Linnaea borealis subsp. longiflora H. M. Pollard 1942-9-12 s.n. Humboldt Near Orleans Comment
  HSC63066  Linum bienne David Wheeler 1979-5-23 135 Humboldt Humboldt State University campus by the Plant Operations yard. Comment
  UC668019  Lipocarpha aristulata Joseph P. Tracy 1931-9-7 9650 c Humboldt Trinity River Valley, at Willow Creek Willow Creek; Trinity River Valley, Willow Creek 152 Comment
  HSC30369  Listera caurina J. D. Ackerman 1974-6-21 320 Humboldt 2 mi. N of Manila, between dunes and Mad River Slough Comment
  UC1103031  Listera caurina Joseph P. Tracy 1924-7-4 6712 Humboldt Snow Camp 1402 Comment
  HSC74730  Listera convallarioides Gail Newton 1981-7-24 2321 Humboldt Near Bug Creek Butte 1417 Comment
  JEPS38042  Lithocarpus densiflorus Lincoln Constance 1934-5-24 637 Humboldt forest bordering on e side Lower Look Prairie; South Fork Eel River, Bull Creek Region 121 Comment
  HSC20217  Lithophragma affine J. P. Tracy 1950-6-25 1888712 Humboldt Burr Valley 1067 Comment
  CAS-BOT-BC430958  Lithophragma bolanderi Doris K. Kildale 1928-5-6 5996 Humboldt Garberville. South Fork of Eel River Comment
  UC492222  Lithophragma heterophyllum Joseph P. Tracy 1932-4-24 9827 Humboldt South Fork of Eel River between Miranda and Redway; North Coast Ranges, South Fork of Eel River 91 Comment
  HSC23087  Lithospermum californicum D. E. Anderson 1965-5-1 3581 Humboldt Along road to Bluff Creek campground, about 3 mi. from its junction with Hwy. 96 Comment
  UC1225760  Lobularia maritima Joseph P. Tracy 1946-6-2 17556 1/2 Humboldt near Samoa (on Humboldt Bay); Humboldt Bay 6 Comment
  UC582504  Logfia gallica Joseph P. Tracy 1935-5-30 13914 Humboldt Willow Creek, Trinity River Valley, Willow Creek 152 Comment
  UC1103060  Lolium multiflorum Joseph P. Tracy 1915-6-20 4653 Humboldt Eureka; Northern Coast Region, Eureka 0 Comment
  UCD66107  Lolium multiflorum C. L. Hitchcock; C. V. Muhlick 1963-7-14 22906 Humboldt Along Eel River at Fern bridge. 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
  SEINET200586 Image available Lolium perenne J. P. Tracy 1937-6-6 15331 Humboldt Ferndale 15 Comment
  UC33879  Lolium temulentum Chesnut and Drew 1888-7-13 Humboldt Campbell's Comment
  HSC100392  Lomaria spicant Carl C. Marshall Apr 1885 116 Humboldt Damp woods. Comment
  HSC74397  Lomatium californicum Gail Newton 1980-6-28 721 Humboldt Near Mad River Butte. 1536 Comment
  RSA226615  Lomatium dasycarpum subsp. dasycarpum D. E. Anderson 1965-5-1 3588 Humboldt Along Highway 96, 3-4 miles south of Weitchpec Comment
  CDA19894  Lomatium dasycarpum subsp. dasycarpum P. Haggard 2002-6-26 PDR P 070837 Humboldt Northern California; Vicinity of Orleans. 0 Comment
  RSA21589  Lomatium dasycarpum subsp. dasycarpum C. B. Wolf 1937-8-13 9234 Humboldt North coast range, 8 mi. east of Hoopa Valley on new road towards Trinity summit. 1220 Comment
  UC154252  Lomatium dasycarpum subsp. dasycarpum Joseph P. Tracy July, 1908 2890 Humboldt near Low Gap (ridge between Van Duzen and Mad Rivers, Humboldt & Trinity Co.'s); Northern Coast Ranges, Humboldt & Trinity Co.'s 914 Comment
  HSC55723  Lomatium macrocarpum G. L. Clifton, Terry Griswold 1979-7-26 10172 Humboldt Near Salmon Mtn., close to the town of Forks of Salmon 2058 Comment
  HSC74497  Lomatium macrocarpum M. A. Baker 1980-7-24 3207 Humboldt Near Orleans Mtn. 1625 Comment
  HSC73958  Lomatium nudicaule Gail Newton 1980-6-7 125 Humboldt Near Brush Mtn. 1128 Comment
  JEPS15822  Lomatium tracyi Joseph P. Tracy 1926-6-20 7610 Humboldt Northern Coast Ranges, Horse Mt. 1524 Comment
  RSA452594  Lomatium tracyi B. Kelly 1977-7-16 537 Humboldt 1/4 mile in from Horse Mountain Road, 1/2 mile below turnoff to summit, near end of unused gravel road. Comment
  UC1186378  Lomatium utriculatum R. Ornduff 1960-6-1 6182 Humboldt ca. 6 mi. e. Garberville (on rd. to Alder Point) Comment
  UC1197141  Lomatium utriculatum Joseph P. Tracy 1947-6-25 17718 Humboldt opposite Buck Mt. (along Van Duzen R., Dinsmore's); Dinsmore's, Van Duzen R. 762 Comment
  UC1222487  Lonicera conjugialis Joseph P. Tracy 1950-8-8 19287 Humboldt Croghan Hole Trinity Summit 1676 Comment
  UC1239548  Lonicera conjugialis Joseph P. Tracy 1932-7-12 10481 Humboldt head Brett Hole; Trinity Summit 1828 Comment
  CAS-BOT-BC240667  Lonicera interrupta Carl D. Duncan 1920-9-20 s.n. Humboldt Hoopa Valley Comment
  SBBG52990  Lotus J. D. Hobson -Jul-1966 Humboldt beach and cliff at S end of sand spit forming Eureka Harbor, Loleta, 10 mi S of Eureka Comment
  POM210206  Lotus aboriginus H. E. Parks 1932-07 3698 Humboldt Bishop Pine Lodge, Trinidad. 61 Comment
  UC534996  Lotus aboriginus H. E. Parks Jul 1932 Humboldt Bishop Pine Lodge Trinidad 60 Comment
  RSA20779  Lotus crassifolius Carl B. Wolf 1937-8-13 9243 Humboldt North coast range, 8 mi. east of Hoopa Valley on new road towards Trinity summit. 1220 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
  UC162607  Lotus crassifolius var. crassifolius Harley P. Chandler Jun 1901 1470 Humboldt Orleans Bar to Sommes Bar; North Coast Ranges 365 Comment
  UC1197290  Lotus humistratus Joseph P. Tracy 1901-8-2 1239 Humboldt near Hydesville; Northern Coast Region, Van Duzen River, Yager Creek 60 Comment
  UC1197292  Lotus humistratus Joseph P. Tracy 1931-6-14 9575 Humboldt Alton, along Van Duzen River Northern Coast Ranges, Van Duzen River 30 Comment
  HSC97498  Lotus micranthus Cara Witte 2007-5-21 60 Humboldt White Oak Opening. 1257 Comment
  UC33561  Lotus oblongifolius var. oblongifolius Chesnut and Drew Aug 1888 Humboldt mouth of Grouse Creek Grouse Creek Comment
  UC1197288  Lotus purshianus var. purshianus Joseph P. Tracy 1906-7-4 2526 Humboldt near Hydesville; Northern Coast Region 60 Comment
  UC202015  Lotus purshianus var. purshianus Joseph P. Tracy 1918-7-28 5092 Humboldt Ocean Beach Northern Coast Region, Humboldt Bay Comment
  SEINET3560045 Image available Lotus stipularis var. subglaber Joseph P. Tracy 1914-7-5 4576 Humboldt Bald Mountian, between High Prairie and Snow Camp 1219 Comment
  RSA12444  Lotus unifoliolatus Carl B. Wolf 1934-7-1 5849 Humboldt Along Eel River and Redwood Highway, 1.2 mi. S of F. K. Lane Grove. 61 Comment
  UC1239506  Luina hypoleuca Stuart Harris 1936-6-12 3357 Humboldt Chalk Mountain 609 Comment
  HSC97955  Lupinus adsurgens Cara Witte, Michael Scott 2007-6-22 349 Humboldt Board Camp Mountain, jeep trail between Tri Board Camp and Fork Camp 1565 Comment
  UC1223281  Lupinus adsurgens Joseph P. Tracy 1946-6-15 17567 Humboldt at the Ski Lodge, Horse Mountain (Horse Mountain); Horse Mountain 1219 Comment
  UC503010  Lupinus affinis Joseph P. Tracy 1932-5-1 9877 Humboldt vicinity Garberville; Northern Coast Ranges, vicinity of Garberville 121 Comment
  UC169051  Lupinus albifrons Joseph P. Tracy 1912-8-3 3969 Humboldt opposite Buck Mountain; Northern Coast Ranges, valley of Van Duzen River 762 Comment
  HSC50953  Lupinus andersonii G. L. Clifton, Overton 1979-6-3 3777 Humboldt Near Pine Mtn., close to the town of Forest Glen 1495 Comment
  HSC37859  Lupinus arboreus Peter Sorensen 1976-6-2 Humboldt Woodley Island Comment
  HSC38340  Lupinus arboreus Peter Sorensen 1976-7-14 Humboldt N Spit Comment
  HSC40974  Lupinus arboreus Linda M. Barker 1976-5-13 1474 Humboldt Lanphere-Christensen Dunes; 3 mi. W of Arcata Comment
  HSC38190  Lupinus bicolor Peter Sorensen 1976-6-2 Humboldt Humboldt Bay, Woodley Island Comment
  HSC95546  Lupinus bicolor Andrea Pickart 2002-5-20 106 Humboldt Manila Dunes, near Manila Community Services District treatment area 15 Comment
  UC1197275  Lupinus bicolor Joseph P. Tracy 1939-4-18 16219 Humboldt Garberville 152 Comment
  HSC14788  Lupinus bicolor C. E. Fellows 1965-5-19 87 Humboldt 1.6 mi. S of 7th St. on Hwy. 101 at bridge, E side of Hwy., S side of bridge Comment
  POM10719  Lupinus bicolor H. P. Chandler 1901-05 128 Humboldt Humboldt Bay. 30 Comment
  HSC103130  Lupinus elmeri M. Mesler 2009-7-31 814 Humboldt South Fork Mtn. FS 1, 7.7 miles north of intersection with 4N12 1767 Comment
  JEPS65283  Lupinus latifolius var. latifolius Lincoln Constance 1934-5-29 714 Humboldt Upper Look Prairie; South Fork Eel River, Bull Creek Region 365 Comment
  HSC102527  Lupinus latifolius var. viridifolius M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-28 1514 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1106 Comment
  UC198577  Lupinus littoralis Joseph P. Tracy 1917-5-26 4785 A Humboldt Bucksport Northern Coast Ranges, , Bucksport (Eureka) 0 Comment
  HSC100521  Lupinus luteolus Carl C. Marshall Jul 1887 401 Humboldt Spruce Grove. Comment
  UC1197258  Lupinus luteolus Joseph P. Tracy 1928-4-22 8417 Humboldt Redwood Creek Northern Coast Ranges, Redwood Creek (at Berry's) 274 Comment
  UC1197271  Lupinus nanus Joseph P. Tracy 1913-6-11 4090 Humboldt near Little Van Duzen Bridge 762 Comment
  UC180177  Lupinus polyphyllus var. polyphyllus Joseph P. Tracy 1914-7-4 4542 Humboldt High Prairie; on Bald Mountain Bald Mountain; Northern Coast Ranges, Bald Mountain 1066 Comment
  BLMAR802  Lupinus rivularis Madeleine Hassett 2017-6-5 802 Humboldt Lost Coast Headlands, Along Guthrie Creek trail 121 Comment
  CDA5442  Lupinus rivularis D. G. Kelch 2007-7-25 7 .503 Humboldt Along Hwy 299 between Lord-Ellis Summit and Hwy 96. Comment
  HSC89503  Lupinus rivularis M. Roantree 1985-5-30 76 Humboldt E side of Trinidad Head along dirt road Comment
  UC179936  Lupinus rivularis Joseph P. Tracy 1914-6-14 4507 Humboldt Hydesville; North Coast Ranges 60 Comment
  RSA170274  Lupinus sellulus var. artulus Joseph P. Tracy 1918-7-5 5021 Humboldt White Thorn Valley. 305 Comment
  UC1152138  Luzula comosa var. laxa Joseph P. Tracy 1947-7-5 17816 Humboldt Meadow at Box Camp, on west side Trinity Summit 1463 Comment
  HSC75690  Luzula parviflora Bill Copeland 1980-7-2 310 Humboldt Near Snow Camp Mtn. 1311 Comment
  UC302166  Luzula parviflora Joseph P. Tracy 1925-7-5 7171 Humboldt near High Prairie (Bald Mountain); Northern Coast Ranges, Bald Mountain 1066 Comment
  RSA54022  Luzula parviflora E. K. Balls, Lee W. Lenz 1956-6-12 21662 Humboldt 4.4 miles SW from Willow Creek along U. S. Highway 299 to Arcata. 366 Comment
  UC1157634  Luzula parviflora Milo S. Baker 1947-8-6 11870 Humboldt Prairie Cr. State Park Comment
  UC1745149  Lycopodium clavatum Clare T. Golec 2000-7-13 Humboldt NE of Blue Lake 182 Comment
  UCD23453  Lycopodium clavatum K. Niles 1950-10-1 s.n. Humboldt Loleta. Comment
  JEPS433  Lysichiton americanus W. L. Jepson 1936-8-17 17916 Humboldt 2 mi. s. Field's Landing (near Still's ranch) Comment
  UCD138077  Lysichiton americanus Linda M. Barker 1976-3-11 1321 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  HSC25657  Lysichiton americanus Mike Silbernagle, Dennis Knuckles 1972-10-12 5826 Humboldt McKinleyville, field bounded by N Central, Norton Rd. and Dow's Prairie Rd. Comment
  HSC35502  Lysichiton americanus J. Burns 1962-4-18 Humboldt Eureka, Togo Rd. Comment
  CAS-BOT-BC342808  Madia elegans L. R. Abrams 1918-6-15 7120 Humboldt Brannan Mt near Willow Creek 1371 Comment
  SEINET11810577  Madia elegans J. P. Tracy 1947-1 17827 Humboldt Horse Mountain 1067 Comment
  UC89451  Madia elegans unknown Humboldt Jarnigans Comment
  HSC58359  Madia gracilis Overton, Butler 1979-8-2 12706 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  HSC74087  Madia gracilis Thomas W. Nelson, James Nelson 1976-5-30 2615 Humboldt McKeown Ranch, N of Dinsmore. Comment
  UC581815  Madia gracilis Joseph P. Tracy 1934-7-18 13432 Humboldt Grouse Mountain North Coast Ranges, Grouse Mountain 1524 Comment
  UC165211  Madia gracilis J. P. Tracy 1909-9-12 2085 Humboldt near Buhne's Point; Eureka 0 Comment
  UC495627 Image available Madia gracilis Joseph P. Tracy 1931-6-28 9588 Humboldt lower foothills of northwest slope of Buck Mountain Comment
  RSA167396  Madia gracilis subsp. gracilis Joseph P. Tracy 1950-7-6 19026 Humboldt Sproston's Place, 3 miles south of Burr Valley 1067 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
  JEPS94960  Madia sativa Vernon Oswald and Lowell Ahart 1997-9-4 8854 Humboldt Somoa Dunes Recreation Area at the s end of the North Spit separating Humboldt Bay from ocean North Spit; Somoa Dunes Recreation Area, North Spit Comment
  UCSC000764  Madia sativa H. L. Person 1932-7-21 s.n. Humboldt Highway near Blue Lake Blue Lake - Eureka Comment
  RSA25705  Mahonia nervosa C. B. Wolf 1941-7-27 11085 Humboldt North Coast Range Mts., Blue Lake to Willow Creek Rd. (U.S. #299) 2 mi. east of n. fk. of Mad River. 152 Comment
  UCD20674  Mahonia nervosa A. T. Leiser 1980-7-9 s.n. Humboldt Humboldt County, Redwood National Park, Hwy 101 reroute. Comment
  CHSC2299  Maianthemum dilatatum M. Anthony 1960-5-14 Humboldt Arcata. Comment
  CAS-BOT-BC508502  Maianthemum dilatatum Marcus E. Jones 1924-4-26 s.n. Humboldt Eureka Comment
  CAS-BOT-BC508519  Maianthemum dilatatum Alice Eastwood 1907-4-21 35 Humboldt Port Trinidad Comment
  JEPS79931  Maianthemum dilatatum Joseph P. Tracy 1926-4-25 7414 Humboldt Grizzly Creek on Van Duzen R. Northern Coast Ranges, Van Duzen R., Grizzly Creek 91 Comment
  RSA376910  Maianthemum dilatatum W. Hutchinson 1927-05 s.n. Humboldt Humboldt County Comment
  HSC58003  Maianthemum racemosum subsp. amplexicaule G. L. Clifton, Griswold 1979-7-31 11788 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1805 Comment
  SEINET12051375  Maianthemum racemosum subsp. amplexicaule F. H. Utech, Sato, T.; Ohara, M. 1990-1 90 -316 Humboldt Six Rivers National Forest, 0.5 mi S of CA 199 on French Hill Rd (USFS Rd 411) 150 Comment
  HSC99389  Maianthemum stellatum K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-6-28 38 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  SEINET3992479  Maianthemum stellatum Unknown 1932-7-12 10455 Humboldt Near Corral Prairie; Trinity Summit 1585 Comment
  CAS-BOT-BC512772  Maianthemum stellatum Doris K. Kildale 1926-3-26 1648 Humboldt Old Fortuna Road 15 Comment
  CAS-BOT-BC512773  Maianthemum stellatum D. Baxter; S. Boren; C. Williams 1994-5-6 47 Humboldt West side of Titlow Road 0.35 miles south of Highway 299 853 Comment
  CAS-BOT-BC140140  Malus fusca Doris K. Kildale 1928-9-10 6715 Humboldt Big Lagoon - south end of Comment
  HSC65125  Marah oregana J. P. Smith 1971-10-6 4968 Humboldt End of Murray Rd. in McKinleyville. Comment
  UC505102  Marah oregana Joseph P. Tracy 1929-5-19 8598 Humboldt Willow Creek Northern Coast Ranges, Trinity River Valley 152 Comment
  HSC71609  Medicago lupulina J. P. Smith, Steve Selva 1970-6-14 3815 Humboldt Along Hwy. 96 at Whitmore Creek 152 Comment
  CDA30224  Medicago polymorpha M. K. Beyers, I. Shepardson 2009-9-13 246 Humboldt In dry portion of the western side of the Eel River, near the base of the entrance of an inlet creek, that runs underneath State Route 254 (Avenue of the Giants) and Highway 101 here. 0 Comment
  JEPS65511  Medicago polymorpha Lincoln Constance 1934-5-26 668 Humboldt Dyerville Bridge South Fork Eel River, Bull Creek region (s end) Comment
  HSC10337  Melica californica J. A. Waller 1965-5-2 31 Humboldt Along Hwy. 96 near Willow Creek. Comment
  UC1145138  Melica californica Joseph P. Tracy 1943-5-9 17418 Humboldt Willow Creek Trinity River Valley (Trinity River Valley) 152 Comment
  UCD87130  Melica californica August L. Hormay 1932-5-12 s.n. Humboldt Bull Creek Road, Redwood Highway, north of Graberville. Comment
  HSC26614  Melica harfordii J. P. Smith, Steve Selva 1970-6-14 3848 Humboldt Along Hwy. 96 at Whitmore Creek 152 Comment
  RSA10102  Melica harfordii Joseph P. Tracy 1926-6-20 7651 Humboldt Horse Mountain. 1524 Comment
  UC53738  Melica harfordii H. P. Chandler 1901-1 1386 Humboldt Hupa Valley Comment
  UC552690  Melica stricta Joseph P. Tracy 1935-7-30 14377 Humboldt w side at top Salmon Summit 2103 Comment
  HSC10368  Melica subulata L. M. Malloy 1965-5-15 1 Humboldt 1 mi. E of Anderson Ranch along Canyon Creek. Comment
  RSA183513  Melica subulata D. E. Anderson 1965-5-8 3631 Humboldt 0.6 miles west of bridge over North Fork of Mad River, along highway 299. Comment
  UCD88677  Melica subulata Joseph. P. Tracy 1942-6-2 17100 Humboldt 2 miles north of Bridgeville. 609 Comment
  HSC10365  Melica subulata D. C. Juve 1964-5-16 53 Humboldt Rousseau Ranch near Kneeland. Comment
  HSC99607  Mentha canadensis C. B. Wolf 1927-8-22 768 Humboldt Big Lagoon Comment
  HSC23730  Mentha pulegium Tim Baroni 1971-7-5 99 Humboldt Comment
  HSC22008  Mentha pulegium Thomas W. Nelson 1970-10-18 250 Humboldt Beside Hwy. 101, 100 yds. N of bridge over Mad River Comment
  HSC59  Mentha pulegium J. Wendell Howe 1931-6-19 Humboldt Redway Comment
  JEPS63443  Mentha spicata Joseph P. Tracy 1925-8-16 7233 Humboldt Trinity River Valley near the South Fork; Northern Coast Ranges, Trinity River Valley near South Fork 182 Comment
  UC577377  Mentha spicata Joseph P. Tracy 1925-8-16 7233 Humboldt Trinity River Valley, near the South Fork; Northern Coast Ranges, Trinity River Valley, near South Fork 182 Comment
  UC1198473  Mentzelia laevicaulis var. laevicaulis Joseph P. Tracy 1911-7-10 3501 Humboldt near: along Willow Creek mouth,Tributary of Trinity River; Northern Coast Ranges 152 Comment
  HSC73145  Micropus californicus M. A. Baker 1980-5-18 1329 Humboldt Near Black Mountain 390 Comment
  UC582509  Micropus californicus var. californicus Joseph P. Tracy 1932-5-1 9854 Humboldt vicinity Garberville 121 Comment
  CAS-BOT-BC348835  Microseris douglasii subsp. douglasii K. L. Chambers 1969-5-25 2923 Humboldt On road to Harris 5.2 mi. E of the freeway overpass at Garberville Comment
  JEPS13230  Microseris laciniata subsp. laciniata Joseph P. Tracy 1934-7-6 13661 Humboldt at Sibley Ranch; Iaqua, Sibley Ranch 609 Comment
  RSA215473  Microseris laciniata subsp. laciniata K. L. Chambers 1969-5-25 2928 Humboldt Highway 36, 0.9 mile west of Bridgeville Comment
  UC707028  Microseris laciniata subsp. laciniata G. L. Stebbins Jr. with A. A. Beetle 1942-6-3 3283 Humboldt 1.4 mi e Garberville (on road to Harris) 304 Comment
  UC129386  Microseris laciniata subsp. leptosepala J. Burtt Davy 1899-6-22 5864 Humboldt Trinity Summit North Coast Ranges, Trinity Summit Comment
  RSA167429  Microseris laciniata subsp. leptosepala Joseph P. Tracy 1947-7-9 17828 Humboldt Horse Mountain, lower slopes 1128 Comment
  UC582708  Mimulus arvensis H. E. Parks and Joseph P. Tracy 1931-5-9 12541 Humboldt near Miranda 60 Comment
  HSC70513  Mimulus cardinalis Thomas W. Nelson, Jane P. Nelson 1977-8-6 3685 Humboldt Along Mad River at Anderson's Ford 640 Comment
  HSC35630  Mimulus cardinalis Thomas W. Nelson, Jane P. Nelson, James Nelson 1975-8-1 2143 Humboldt Beside Willow Creek just up stream from Hwy. 299 bridge Comment
  HSC42348  Mimulus cardinalis K. Irwin 1977-8-2 Humboldt Mad River at the Fish Hatchery, ca. 2 mi. S of Blue Lake Comment
  UC147884  Mimulus grandis J. P. Tracy 1903-6-14 1923 Humboldt immediate vicinity Eureka 0 Comment
  HSC74642  Mimulus guttatus M. A. Baker 1980-5-18 1366 Humboldt Near Black Mtn. 792 Comment
  RSA454336  Mimulus guttatus Francis W. Pennell, Joseph P. Tracy 1940-7-7 26087 Humboldt Route 299. Headwaters of Willow Creek. 762 Comment
  UC175796  Mimulus guttatus Joseph P. Tracy 1912-7-31 3897 Humboldt nw slope Buck Mountain; Northern Coast Ranges, Burr Valley 1066 Comment
  JEPS10800  Mimulus inodorus Joseph P. Tracy 1935-7-24 14198 Humboldt near Ranger Station; Trinity Summit 1828 Comment
  UC162578  Mimulus inodorus Joseph P. Tracy 1911-7-7 3409 Humboldt 3 mi nw of junction of Willow Creek with Trinity River (near Beebe's Ranch); Northern Coast Ranges 914 Comment
  HSC85939  Mimulus kelloggii Susan Carter, Eric May, Sarah McNaull 1987-3-7 7 Humboldt 8 mi. SSE of Salyer on Co. Rd. 447, F.S. Rd. 5N03, trail 6E23; E of South Fork of Trinity River 457 Comment
  RSA447972  Mimulus moschatus Unspecified 1924-7-15 s.n. Humboldt Bull Creek. Comment
  HSC12793  Mimulus pilosus Jana Kattenhorn 1970-10-28 149 Humboldt Mad River at the mouth of Lindsey Creek, N Bank Rd. off Hwy. 299 Comment
  HSC20790  Mimulus pilosus David Adams 1960-8-20 Humboldt Eel River; Whitlow (Sequoia) 56 Comment
  HSC97619  Mimulus pulsiferae Cara Witte 2007-6-4 202 Humboldt Cold Spring. 0.5 mile S of Titlow Hill. 1386 Comment
  UC147912  Mimulus pulsiferae Joseph P. Tracy 1908-6 2828 Humboldt Buck Mountain Northern Coast Ranges (nw slope, along waterway) 1219 Comment
  CAS-BOT-BC388625  Minuartia douglasii Doris K. Kildale 1926-4-25 1801 Humboldt Willow Creek Flat 152 Comment
  CDA21079  Minuartia douglasii G. F. Hrusa 1993-6-17 11221 Humboldt Red Mountain; Summit of road cut at entrance gate to Red Mtn. Comment
  UCD98275  Minuartia douglasii Joseph P. Tracy 1942-6-23 17225 Humboldt Trinity Summit; one mile west of Mud Springs. Comment
  JEPS49686  Mitella caulescens Joseph P. Tracy 1923-6-24 6361 Humboldt near High Prairie; Northern Coast Ranges, Bald Mountain 1066 Comment
  UC902093  Mitella diversifolia Joseph P. Tracy 1942-6-23 17235 Humboldt along trail from Hoopa to summit (near Box Camp); Trinity Summit 1524 Comment
  RSA273428  Mitella ovalis M. A. Baker 1977-4-23 175 Humboldt 2.5 miles South of Shelter Cove Road. South fork of Bear Creek at Wailaki Campground. 561 Comment
  UC14518  Mitella ovalis W. C. Blasdale 1896-6-1 Humboldt Freshwater Comment
  UC673257  Mitella ovalis Lincoln Constance and Reed C. Rollins 1942-5-11 2865 Humboldt near summit 8 mi e Blue Lake; North Coast Ranges Comment
  JEPS43508  Mitella ovalis Joseph P. Tracy 1933-5-14 12183 Humboldt Willow Creek Canyon along Trinity Highway; Willow Creek Canyon 365 Comment
  HSC100651  Mitella trifida Carl C. Marshall Mar 1886 153 Humboldt Wet shaded places. Comment
  HSC74371  Moehringia macrophylla M. A. Baker 1980-6-16 1950 Humboldt Near Onion Mtn. 1280 Comment
  HSC58069  Monardella odoratissima subsp. pallida G. L. Clifton, Griswold 1979-8-1 11953 Humboldt Near Mill Creek Lakes, close to the town of Hoopa 1707 Comment
  BLMAR645  Monardella sheltonii Jennifer Wheeler 2011-8-31 645 Humboldt Lacks creek, Pine Ridge road, spur 3 at Stormy Saddle 1097 Comment
  CAS-BOT-BC220259  Monardella sheltonii Henry M. Pollard 1948-7-19 s.n. Humboldt Between Orleans and Van Fleet ranch Comment
  SEINET3228189 Image available Monardella villosa Joseph P. Tracy 1912-8-1 3961 Humboldt Valley of Van Duzen River, opposite Buck Mountain 760 Comment
  UC2035872  Monardella villosa subsp. villosa Carl B. Wolf 1934-7-3 5923 Humboldt Weithpec junction of Klamath River and Trinity River 200 yards. west of school. 304 Comment
  UC34369  Monotropa hypopitys Chesnut and Drew 1888-7-9 Humboldt Kneeland Comment
  CAS-BOT-BC445158  Montia parvifolia W. R. Dudley 1899-1-1 s.n. Humboldt Trinidad Head Comment
  HSC55193  Montia parvifolia G. L. Clifton, Terry Griswold 1979-8-2 12267 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  HSC99575  Muhlenbergia filiformis K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-8-10 240 Humboldt Near North Trinity Mtn, 11. 9 mi east of Hoopa on Big Hill Rd (8N01), at Box Camp, Six Rivers National Forest. 1372 Comment
  RSA152302  Muhlenbergia filiformis Joseph P. Tracy 1919-9-18 5233 Humboldt Trinity Summit. 1829 Comment
  JEPS70787  Myosotis discolor Joseph P. Tracy 1925-5-10 6963 Humboldt near Hydesville; North Coast Ranges 91 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
  UC55917  Myosotis discolor J. P. Tracy 1900-5-28 827 Humboldt immediate vicinity of Eureka 0 Comment
  HSC103302  Myosotis latifolia Michael G. Simpson, Michael Mesler, Michael Mayer 2008-5-28 3016 Humboldt Above College Cove (north of Trinidad State Beach); along path to beach. 61 Comment
  HSC12417  Myosotis sylvatica D. Santana 1970-11-15 115 Humboldt Near Fickle Hill Rd. and 7th St. Comment
  HSC31423  Myosurus minimus Rudy Becking 1974-5-5 Humboldt Samoa dunes near USCG Station Comment
  UC502985  Myrica californica Joseph P. Tracy 1930-5-18 8698 Humboldt Rohnerville Golf Course Northern Coast Ranges, Rohnerville Golf Course 152 Comment
  CAS-BOT-BC515985  Narthecium californicum Joseph P. Tracy 1930-7-17 9003 Humboldt South Fork Mountain, at McKay Camp 1676 Comment
  JEPS79935  Narthecium californicum Joseph P. Tracy 1930-7-17 9003 Humboldt meadow at McKay Camp (S. Fork Mt.); S. Fork Mt. 1676 Comment
  UCD87901  Nassella lepida A. H. Murphy 1951-5-18 s.n. Humboldt 2.5 mi. northwest of Petrolia on rocky road cut along county road. Petrolia to Ferndale. Comment
  HSC75466  Navarretia capillaris J. O. Sawyer 1980-7-18 3596 Humboldt North Trinity Mountain Research Natural Area, north of Mill Creek Lake to Red Cap Hole. Comment
  HSC75514  Navarretia divaricata J. O. Sawyer, R. J. Cole 1977-7-3 3012 Humboldt Environs of Mud Spring, Big Hill Rd. (FS Rd. 8N01) 1524 Comment
  UC1197903  Navarretia linearifolia subsp. linearifolia Joseph P. Tracy 1947-7-9 17859 Humboldt Horse Mountain 1432 Comment
  HSC35861  Navarretia mellita Thomas W. Nelson, James Nelson 1975-8-5 2132 Humboldt Along S spit of Humboldt Bay adjacent to jetty Comment
  CAS-BOT-BC232739  Navarretia sinistra subsp. pinnatisecta Doris K. Kildale 1926-8-2 2444 Humboldt Flannegan's Mill near Strong's Station, Van Duzen River Comment
  HSC39447  Navarretia squarrosa Linda M. Barker 1976-8-2 1668 Humboldt Lanphere- Christensen Dunes, 3 mi. W of Arcata Comment
  UC198644  Navarretia squarrosa Joseph P. Tracy 1917-9-3 4857 Humboldt Jones Ranch, lower slopes of Grouse Mountain Northern Coast Ranges, Grouse Mountain 914 Comment
  UC1222718  Navarretia tagetina Joseph P. Tracy 1950-6-23 18862 Humboldt 3 mi ne Alderpoint; Dobbyn Creek 213 Comment
  UC1116246  Nemophila menziesii Joseph P. Tracy 1948-5-31 17996 Humboldt Harris 609 Comment
  HSC100497  Nemophila menziesii Carl C. Marshall Jul 1887 86 Humboldt In the hills everywhere. Comment
  HSC36876  Nemophila menziesii J. P. Smith, J. O. Sawyer, J. Cole 1976-4-18 8612 Humboldt Bald Hills Rd., 17 mi. from its jct. with Hwy. 101 854 Comment
  HSC34960  Nemophila menziesii var. atomaria Thomas W. Nelson 1975-5-24 1868 Humboldt McKeown Ranch, N of Dinsmore. Comment
  UC177199  Nemophila menziesii var. atomaria Joseph P. Tracy 1913-6-13 4094 Humboldt opposite Buck Mountain (in valley of Van Duzen River); Northern Coast Ranges, in valley Van Duzen River, Buck Mt 762 Comment
  HSC76196  Nemophila parviflora Overton, Butler 1979-7-24 9799 Humboldt Near Black Rock, close to the town of Willow Creek 1463 Comment
  CAS-BOT-BC231216  Nemophila parviflora var. austiniae Marck Menke 1999-5-31 32 Humboldt Redwood National Park, near Tall Trees Grove Comment
  UC1103816  Nemophila pedunculata Joseph P. Tracy 1928-3-18 8404 Humboldt Van Duzen River at Grizzly Peak; Van Duzen River at Grizzly Peak 91 Comment
  RSA46499  Nicotiana bigelovii Doris K. Kildale 1925-9-12 1327 Humboldt Salmon Crk near Miranda. 114 Comment
  UCD110194  Notholithocarpus densiflorus S. P. Lynch 1975-6-9 1371 Humboldt ca. 20.4 mi. E of Arcata on Hwy. 299, heading towards Willow Creek. Comment
  HSC99079  Notholithocarpus densiflorus var. echinoides Cara Witte 2008-7-10 852 Humboldt Forest Service Road 4N06A. Cow Creek Ridge. 1.5 mile from National Forest 1. Under powerlines. 1239 Comment
  HSC20656  Nuttallanthus texanus L. H. Myers 1963-4-5 19 Humboldt Dunes W of Lanpheres Rd., Mad River slough area Comment
  HSC18704  Oemleria cerasiformis D. E. Anderson 1962-2-25 1925 Humboldt 1 mi. W of Ferndale along Centerville Beach Rd. Comment
  UC1039818  Oemleria cerasiformis J. I. Mallory 1956-4-27 127 Humboldt 1.5 mi w Petrolia (at head of Jeffrey Gulch); Jeffrey Gulch 167 Comment
  SEINET11915945  Oemleria cerasiformis J. P. Tracy 1950-1 18618 Humboldt 2 mi W of Dinsmore's, Buck Mountain, lower foothills of its NW slope 762 Comment
  UC1222755  Oenanthe sarmentosa Joseph P. Tracy 1950-9-2 19348 Humboldt 2 mi. s. of town Field's Landing (edges of foothills) 6 Comment
  HSC21579  Oenanthe sarmentosa Paul Shields 1955-6-16 Humboldt Humboldt State campus Comment
  HSC16523  Oenothera glazioviana David K. Smith 1968-11-20 68 Humboldt At jct. of Old Arcata Rd. and Jacoby Creek Rd. Comment
  SEINET186016  Orobanche californica subsp. californica Joseph P. Tracy, H. E. Parks 1924-8-3 6761 Humboldt Big Lagoon 6 Comment
  CAS-BOT-BC499672  Orobanche californica subsp. californica Edward Lee 1934-8-17 1152 Humboldt East shore of Big Lagoon, 35 mi N of Eureka 3 Comment
  UC154274  Orobanche fasciculata Mrs. M. H. Manning 1901-6-7 97 Humboldt Near Hupa. Comment
  HSC55229  Orthilia secunda G. L. Clifton, Griswold 1979-8-2 12430 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  HSC100678  Orthocarpus Carl C. Marshall Jun 1886 110 Humboldt Near Mad River Beach. Comment
  HSC100939  Orthocarpus attenuatus Miss Handy Jun 1886 40 Humboldt Maple Cr. Comment
  JEPS9402  Orthocarpus imbricatus Joseph P. Tracy 1932-7-11 10416 Humboldt Trinity Summit , open places at Corral Prairie (open places at Corral Prairie) 1584 Comment
  RSA407951  Orthocarpus purpurascens Francis W. Pennell, Joseph P. Tracy 1940-7-6 26085 Humboldt Table Bluff L.H., W of Lolita. Back of beach. 0 Comment
  POM147450  Orthocarpus purpurascens var. latifolius Joseph P. Tracy 1925-8-14 7230 Humboldt Near Samoa, on Humboldt Bay. Comment
  HSC56175  Osmorhiza berteroi G. L. Clifton, Terry Griswold 1979-8-1 12082 Humboldt Near N Trinity Mtn., close to the town of Hoopa. 1798 Comment
  HSC56304  Osmorhiza berteroi Overton, Butler 1979-8-2 12611 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  HSC74434  Osmorhiza berteroi Gail Newton 1980-8-10 2064 Humboldt Near Blake Mtn. 1707 Comment
  HSC82101  Osmorhiza berteroi Thomas W. Nelson, Jane P. Nelson 1980-5-25 5267 Humboldt Along road from Dinsmore to Anderson Crossing- McKeown Ranch Rd.- 0.5 mi. NW of McKeown house 823 Comment
  BLMAR43  Osmorhiza berteroi June, 1982 43 Humboldt King range, tolkan campground Comment
  HSC79449  Osmorhiza berteroi Kenneth Clark 1980-4-18 576 Humboldt On access trail to Dead Man's Gulch 52 Comment
  UCR45439  Osmorhiza chilensis Kenneth Clark 1980-4-18 576 Humboldt North Coast, Shelter Cove, on access trail to Dead Man's Gulch 52 Comment
  JEPS14243  Osmorhiza occidentalis Joseph P. Tracy 1927-6-12 8157 Humboldt Horse Mountain; lower slopes 1219 Comment
  UCR84792  Oxalis oregana Kathy Harper 1992-5-14 s.n. Humboldt State Hwy 36 c. 5 mi. east of U.S. Hwy 101, and 1 mi. east of Carlotta 61 Comment
  HSC45275  Oxalis oregana Brad Klipfel 1973-4-28 6 Humboldt Along Korbel to Maple Creek County Rd. Comment
  RSA34052  Oxalis oregana A. A. Heller 1923-7-10 13787 Humboldt Humboldt Camp between Scotia and Pepperwood Comment
  SEINET12184454  Oxalis oregana E. A. York 1990-1-10 2664 Humboldt USGS Redwood Field Station, Arcata Comment
  UC39291  Panicum acuminatum var. acuminatum Joseph Burtt Davy and Walter C. Blasdale 1899-6-29 5894 Humboldt near Martin's Ferry (North-Western California); near Martin's Ferry Comment
  UCD88691  Panicum acuminatum var. fasciculatum Joseph P. Tracy 1918-7-5 5014 Humboldt White Thorn Valley. 304 Comment
  UC33881  Panicum capillare Chestnut and Drew 1888-8-1 Humboldt Grouse Creek Comment
  CDA2147  Panicum miliaceum T. R. Haig 1975-8-27 Humboldt Korbel. 0 Comment
  CDA2139  Parapholis incurva Gordon Leppig, Sylvia Leppig 2000-5-29 1385 Humboldt Trinidad Harbor, Trinidad. Comment
  RSA246893  Parapholis incurva R. F. Thorne, P. Everett 1965-8-8 35274 Humboldt N edge of Eureka, E of Hwy 101. 3 Comment
  JEPS23565  Parentucellia viscosa Peter H. Raven with R. Snow 1958-7-21 13652 Humboldt 2.9 mi s Ferndale (on road to Cape Mendocino) Comment
  JEPS4481  Parentucellia viscosa Joseph P. Tracy 1911-7-12 3530 Humboldt Blue Lake; Northern Coast Ranges 60 Comment
  UC582563  Parentucellia viscosa Joseph P. Tracy 1937-7-17 15433 Humboldt Eureka 30 Comment
  CDA6387  Parentucellia viscosa T. C. Fuller 1961-9-28 7060 Humboldt 1.5 miles south of Samoa. 0 Comment
  UC1199002  Paxistima myrsinites Joseph P. Tracy 1948-8-15 18132 Humboldt on Ridge 2 mi. e. Grove's Prairie (near Elk Camp, Trinity Summit); Trinity Summit 1554 Comment
  HSC56164  Pedicularis attollens G. L. Clifton, Terry Griswold 1979-8-1 12048 Humboldt Near N Trinity Mtn., close to the town of Hoopa. 1798 Comment
  CAS-BOT-BC69338  Pellaea brachyptera Henry M. Pollard 1943-8-1 s.n. Humboldt Orleans Mt. 1828 Comment
  HSC24382  Penstemon anguineus J. O. Sawyer 1970-6-24 2255 Humboldt S of Mill Creek Gap, FS Rd. 10N02 1433 Comment
  HSC56254  Penstemon anguineus Walter Overton 1979-8-1 12387 Humboldt Near Packsaddle Ridge, close to the town of Hoopa 1341 Comment
  HSC56260  Penstemon anguineus G. L. Clifton, Terry Griswold 1979-8-2 12416 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  BLMAR247  Penstemon anguineus Jennifer Anthony-Wheeler 1997-7-24 247 Humboldt Lacks Creek, growing NE of parking landing among regenerating forest 1219 Comment
  RSA309621  Penstemon deustus Walter Wisura 1983-9-3 3931 Humboldt About 6 mi N of Weitchpec, along Klamath River. Comment
  RSA120319  Penstemon laetus var. sagittatus S. S. Tillett 1956-7-6 608 Humboldt On E facing slope above Klamath River, along Ishi Rish Road, approx. 1.5 mi from Orleans. 198 Comment
  UC585632  Penstemon laetus var. sagittatus Joseph P. Tracy 1937-7-24 15512 Humboldt 2 mi se Devil's Hole; Trinity Summit, se of Devil's Hole 1584 Comment
  JEPS85630  Penstemon newberryi var. berryi W. L. Jepson July 16 - 23, 1902 2107 Humboldt Trinity Summit 2133 Comment
  HSC56195  Penstemon procerus var. brachyanthus Gilbert Muth 1979-8-1 12139 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1677 Comment
  JEPS7917  Penstemon rattanii Joseph P. Tracy 1906-6-10 2480 Humboldt Northern Coast Ranges, Kneeland Prairie Kneeland Prairie; Northern Coast Ranges, Kneeland Prairie 762 Comment
  HSC100681  Penstemon rattanii Carl C. Marshall Jun 1886 20 Humboldt Near Kneeland Prairie. Comment
  UCD137766  Pentagramma triangularis M. Wiesendanger 1928-4-7 909 Humboldt Redwood Highway, Lane's Redwood Flat. Comment
  SEINET12350908  Pentagramma triangularis E. A. York 1990-1-10 2660 Humboldt USGS Redwood Field Station, Arcata Comment
  HSC99564  Perideridia gairdneri subsp. borealis K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-8-10 229 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
  HSC38073  Perideridia howellii Thomas W. Nelson, James Nelson 1976-5-30 2634 Humboldt McKeowan Ranch N of Dinsmore along road to Anderson's Ford 915 Comment
  HSC98551  Perideridia howellii Cara Witte 2007-8-1 613 Humboldt White Oak Opening. Along Kinsey Ridge. 1257 Comment
  HSC94187  Persicaria capitata Gordon Leppig, Sylvia Leppig 2000-4-16 1298 Humboldt Corner of 17th and J St., Arcata Comment
  SEINET3926008  Persicaria maculosa Norman Dennis 1965-6-8 109 Humboldt Samoa Peninsula along the west side of Humboldt Bay.; 0 Comment
  HSC6052  Petasites frigidus var. palmatus Eugene Andreuccetti 1964-5-2 35 Humboldt 5 mi. W of Willow Creek on Hwy. 299 Comment
  UC175181  Petasites frigidus var. palmatus Joseph P. Tracy 1913-3-9 4014 Humboldt near Hydesville (along Van Duzen River); Northern Coast Region, Van Duzen River 60 Comment
  HSC26590  Petrorhagia dubia D. E. Anderson 1973-4-20 Humboldt Flood plain of Eel River 5 mi. E of Founders Tree area, Avenue of the Giants Comment
  HSC37415  Phacelia bolanderi Gary S. Lester, Roger L. Yearout, Judith G. Dickson 1974-7-24 517 Humboldt Along Lost Man Creek. 38 Comment
  JEPS1446  Phacelia bolanderi Milo S. Baker 1923-7-10 1 Humboldt hwy s Garberville Comment
  HSC100499  Phacelia circinata Carl C. Marshall Jun 1886 288 Humboldt Coyote Camp. Comment
  HSC41588  Phacelia corymbosa Thomas W. Nelson, Jane P. Nelson 1977-7-4 3576 Humboldt Head of N Fork of Conley Creek 1463 Comment
  HSC96239  Phacelia heterophylla subsp. virgata Sara March, Gillian Levy 2005-6-8 1 Humboldt 1.7 mi. south of Hwy. 299 on Titlow Hill Rd. 980 Comment
  UC562566  Phacelia mutabilis Joseph P. Tracy 1932-7-12 10432 Humboldt Corral Prairie Trinity Summit 1584 Comment
  JEPS1133  Phacelia nemoralis subsp. oregonensis W. L. Jepson 1902-6-20 1896 Humboldt = Mail Ridge Fort Seward Ranch Ridge 396 Comment
  UC552718  Phalaris arundinacea Joseph P. Tracy 1935-6-8 13950 Humboldt along coast in front of South End Stone Lagoon (Dry Lagoon); in front of South End Stone Lagoon, Dry Lagoon 3 Comment
  UC552756  Phalaris arundinacea Joseph P. Tracy 1934-7-27 13492 Humboldt Arcata Bottom; North Coast Ranges, Arcata Bottom 12 Comment
  CAS-BOT-BC76569  Philadelphus lewisii L. R. Abrams 1916-7-11 6006 Humboldt Between Blocksberg and Bridgeville Comment
  JEPS49600  Philadelphus lewisii W. L. Jepson 1902-7-1 1964 A Humboldt Hupa Road Redwood Creek Comment
  UC666824  Philadelphus lewisii Joseph P. Tracy 1938-6-9 15872 Humboldt Dobbyn Creek 152 Comment
  HSC58543  Phleum alpinum Overton, Butler 1979-7-23 9546 Humboldt Near Titlow Hill, close to the town of Willow Creek. 1280 Comment
  HSC58537  Phleum pratense Overton, Butler 1979-7-23 9461 Humboldt Near Horse Mountain Mine, close to the town of Willow Creek 1295 Comment
  HSC64189  Phlox adsurgens J. O. Sawyer, M. A. Ericksen 1979-6-23 3379 Humboldt Slopes below Mill Creek Lakes 1585 Comment
  UC1198554  Phlox adsurgens Joseph P. Tracy 1947-7-5 17808 Humboldt near Box Camp; Trinity Summit 1524 Comment
  RSA256575  Phlox adsurgens J. O. Sawyer 1970-6-24 2262 Humboldt S of Mill Creek Gap. F.S. Road 10N02. 1433 Comment
  HSC56182  Phlox diffusa Gilbert Muth 1979-8-1 12102 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1877 Comment
  SEINET10496960  Phlox diffusa subsp. diffusa Botany 1985-5-10 BOTANY s.n. Humboldt T6n,r4e,sec.28,h.m.; Horse mountain road, ca 8 miles s of hwy 299, on open Slope with ceanothus ssp and quercus ssp. Flowers pale blue 1143 Comment
  SEINET2444304  Phyllospadix scouleri C. Davidson 2010-10-3 11819 Humboldt Moonstone State Beach. North of Arcata. Washed up by a high surf.; 0 Comment
  HSC18709  Physocarpus capitatus W. R. Rogers 1966-5-1 217 Humboldt N bank of Mad River Comment
  RSA40785  Physocarpus capitatus Carl B. Wolf 1944-10-25 11467 Humboldt Sandy river bank, along the Eel River, Redwood Highway, at Richardson Grove. 61 Comment
  HSC40943  Picea sitchensis Linda M. Barker 1976-4-13 1376 Humboldt 3 mi. W of Arcata Comment
  JEPS46729  Picea sitchensis J. P. Tracy Feb. 1901 Humboldt Humboldt Bay Comment
  POM281983  Picea sitchensis Lyman Benson 1928-7-10 445 Humboldt Dunes at Clam Beach, Arcata to Trinidad. 15 Comment
  HSC12720  Pinus contorta C. E. Fellows 1970-10-7 374 Humboldt McKinleyville 0.25 mi. W of end of Murray Rd. near dunes Comment
  SD117462  Pinus contorta subsp. bolanderi Robert F. Thorne 1974-7-29 45083 Humboldt Samoa Dunes Comment
  POM199392  Pinus contorta var. contorta H. E. Parks 1931-05 s.n. Humboldt Samoa, Pine Barrens. Comment
  UCD134418  Pinus contorta var. contorta Linda M. Barker 1976-7-5 1641 Humboldt Lanphere-Christensen Dunes, 3 miles west of Arcata. Comment
  UC63996  Pinus lambertiana Mrs. M. H. Manning 1901-1 Humboldt 5 mi from Hupa (Redwood trail) Comment
  HSC98787  Pinus monticola Cara Witte 2008-6-4 679 Humboldt Horse Mountain Botanical Area. Forest Service Road 6N38. Near Horse Mountain mine. 1307 Comment
  CAS-BOT-BC78978  Pinus muricata William R. Dudley 1899-6-28 s.n. Humboldt the Humboldt Bay [peninsula] Peninsula opposite Eureka (near sea-level) Comment
  HSC1529  Pinus muricata R. A. Magie 1964-5-3 46 Humboldt 2 mi. N of Trinidad on old Hwy. to Crescent City. Comment
  UC1204918  Pinus muricata unknown July, 1935 Humboldt 1/2 mi or so back from ocean; Moonstone Beach settlement 60 Comment
  UC1196925  Pinus ponderosa Joseph P. Tracy 1926-6-27 7678 Humboldt Horse Mountain Northern Coast Ranges, Horse Mountain 1524 Comment
  HSC1574  Pinus radiata R. A. Magie 1964-5-3 45 Humboldt 2 mi. N of Trinidad on old Hwy. to Crescent City. Comment
  HSC71802  Pinus sabiniana M. A. Baker 1980-6-26 2380 Humboldt Near Sims Creek 610 Comment
  UC1152007  Piptatherum miliaceum Joseph P. Tracy 1951-6-21 19518 Humboldt experimental grass garden of Albert H. Murphy Hydesville Comment
  UC1222229  Plagiobothrys bracteatus Joseph P. Tracy 1948-6-13 18031 Humboldt on Larrabee Creek Road around pool (halfway between Bridgeville and Blocksburg) Comment
  UC525608  Plagiobothrys bracteatus Joseph P. Tracy 1927-5-14 8029 Humboldt moist low place at Willow Creek; Northern Coast Ranges, Trinity River Valley 152 Comment
  HSC41224  Plagiobothrys hispidulus Thomas W. Nelson, Jane P. Nelson 1977-7-4 3593 Humboldt Margin of pond above Alder Springs 1585 Comment
  UC249518  Plagiobothrys nothofulvus Joseph P. Tracy 1922-4-30 6019 Humboldt near Willow Creek; Northern Coast Ranges, Trinity River Valley 152 Comment
  UC668230  Plagiobothrys reticulatus Joseph P. Tracy 1938-7-5 16013 Humboldt open flat by old Strong's District School House (5 mi e of town, Carlotta); Carlotta, old Strong's District School House 45 Comment
  JEPS60974  Plagiobothrys reticulatus var. reticulatus Joseph P. Tracy 1918-7-5 5010 Humboldt White Thorn Valley Northern Coast Ranges 304 Comment
  UCD120950  Plagiobothrys scouleri Joseph P. Tracy 1949-6-25 18353 Humboldt Trinity Summit, meadow at Box Camp. 1463 Comment
  JEPS68128  Plagiobothrys tenellus Joseph P. Tracy 1932-5-1 9863 Humboldt near Garberville (Redway); Northern Coast Ranges 182 Comment
  UC1196138  Plantago erecta Joseph P. Tracy 1938-7-12 16057 Humboldt Table Bluff, w of light house Table Bluff 6 Comment
  HSC89612  Plantago lanceolata M. Roantree 1985-5-24 61 Humboldt E side of Trinidad Head Comment
  OBI11636  Plantago major Joseph P. Tracy 1942-7-25 17300 Humboldt Fickle Hill, 6 mi SE of Arcata Comment
  HSC67513  Plantago maritima J. P. Smith 1976-7-3 8933 Humboldt Just N of Samoa Bridge Comment
  UC154020  Plantago subnuda J. P. Tracy 1903-8-9 1937 Humboldt immediate vicinity Eureka 0 Comment
  HSC34985  Plantago subnuda Thomas W. Nelson 1974-9-12 1709 Humboldt 3 mi. S of Arcata Comment
  UC429188  Platanthera Franklin P. Nutting Humboldt Bridge Creek, n California Bridge Creek Comment
  HSC53868  Platanthera dilatata Griswold, Butler 1979-7-10 6348 Humboldt Near Board Camp Mtn., close to the town of Willow Creek 1372 Comment
  HSC97555  Platanthera dilatata var. leucostachys Cara Witte 2007-6-1 174 Humboldt Along Forest Service 5N10. 1.5 miles east of intersection with National Forest 1. 1365 Comment
  UCD138980  Platanthera dilatata var. leucostachys R. S. Woglum 1937-8-29 2037 -a Humboldt State Park grounds south of Trinidad. Comment
  RSA246764  Platanthera leucostachys Robert F. Thorne, Percy C. Everett 1965-8-9 35284 Humboldt Big Lagoon. 3 Comment
  HSC54529  Platanthera sparsiflora Overton, Butler 1979-7-23 9471 Humboldt Near Horse Mtn. Creek, close to the town of Willow Creek 1326 Comment
  HSC54540  Platanthera sparsiflora Overton, Butler 1979-7-23 9523 Humboldt Near Titlow Hill, close to the town of Willow Creek. 1280 Comment
  UC275576  Platanthera sparsiflora Joseph P. Tracy 1923-6-24 6369 Humboldt near High Prairie; Northern Coast Ranges, Bald Mountain 1066 Comment
  CAS-BOT-BC91638  Platystemon californicus J. Ed. McClellan; Bonnie McClellan 1972-6-1 s.n. Humboldt Samoa. Comment
  HSC90238  Platystemon californicus Louise Watson, Jan Meninga Mar 1991 14 Humboldt Near Manilla, Mad River Slough and Dunes, NW edge of parking lot Comment
  JEPS51633  Platystemon californicus Joseph P. Tracy 1866-4-4 Humboldt Eureka Comment
  HSC16792  Platystemon californicus J. W. Johnson 1962-8-18 1245 Humboldt Arcata, Mad River County Park Comment
  HSC16801  Platystemon californicus Francis Winter 1960-4-19 Humboldt Samoa Peninsula, Fairhaven Airport entrance, 12 mi. W of Arcata Comment
  SEINET516269  Platystemon californicus Vernon H. Oswald 1998-4-16 8915 Humboldt North Spit of Humbldt Bay, west side of New Navy Base Rd. 1.7 mi S of Hwy. 255. Comment
  JEPS4811  Plectritis brachystemon Joseph P. Tracy 1932-6-26 10255 Humboldt Valley of South Yager Creek 762 Comment
  UC176997  Plectritis brachystemon Joseph P. Tracy 1912-6-9 3656 Humboldt Northern Coast Region, Alton Alton; Northern Coast Region, Alton 30 Comment
  UC1239580  Plectritis congesta Joseph P. Tracy 1904-4-24 2024 Humboldt Ocean Beach at Humboldt Bay Ocean Beach Ocean Beach; Northern Coast Region, Humboldt Bay, Ocean Beach Comment
  HSC77949  Plectritis congesta subsp. brachystemon Jimerson, Imper 1982-5-17 1439 Humboldt Near Ashfield Ridge. 822 Comment
  UC552670  Pleuropogon californicus Joseph P. Tracy 1935-5-25 13846 Humboldt Fort Seward 106 Comment
  HSC99458  Pleuropogon refractus K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-7 112 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
  UCD90105  Pleuropogon refractus R. Tofsrud 1949-7-22 s.n. Humboldt on road between Scotia and Capetown. Comment
  HSC10618  Poa annua R. H. Berg 1963-3-1 5 Humboldt Arcata, Fickle Hill area. Comment
  HSC89595  Poa annua M. Roantree 1985-5-2 29 Humboldt S side of Trinidad Head summit, near cross. Comment
  UC180496  Poa annua Joseph P. Tracy 1914-5-14 4460 Humboldt Fort Seward; North Coast Ranges 121 Comment
  HSC99416  Poa bulbosa K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-6-28 65 Humboldt Near North Trinity Mtn, 11. 9 mi east of Hoopa on Big Hill Rd (8N01), at Box Camp, Six Rivers National Forest. 1372 Comment
  RSA10140  Poa compressa Joseph P. Tracy 1927-7-3 8224 Humboldt Fieldbrook 61 Comment
  SEINET178314 Image available Poa compressa Joseph P. Tracy 1913-7-20 4378 Humboldt on Redwood Creek at the Berry crossing 300 Comment
  CAS-BOT-BC255117  Poa confinis Peter H. Raven 1963-5-15 18372 Humboldt Dunes above coast, Lanphere Ranch just W of Mad River Slough, near Arcata Comment
  SACT001837  Poa confinis D. Shillingbury 1963-5-11 Humboldt Coastal Strand. Sea level. Comment
  HSC46978  Poa douglasii J. P. Smith, Thomas W. Nelson 1977-6-30 9223 Humboldt Samoa Peninsula just E of the drag strip 6 Comment
  POM161908  Poa howellii Joseph P. Tracy 1921-4-24 5451 Humboldt Phillipsville. Facing south fork of Eel River. 91 Comment
  HSC10723  Poa kelloggii J. P. Tracy 1926-4-25 7415 Humboldt Grizzly Creek on Van Duzen River. Comment
  UC525620  Poa kelloggii Joseph P. Tracy 1926-4-25 7415 Humboldt on Van Duzen River Grizzly Creek; North Coast Ranges 91 Comment
  HSC38922  Poa macrantha Linda M. Barker 1976-6-22 1625 .5 Humboldt 3 mi. W of Arcata Comment
  HSC77908  Poa macrantha L. P. Janeway, Paul Wilson 1984-5-7 766 Humboldt N Spit of Humboldt Bay, on BLM lands near the Coast Guard Station 3 Comment
  HSC90699  Poa macrantha Gail Newton 1982-6-10 3612 Humboldt Elk River Wildlife Area, Eureka Comment
  HSC10770  Poa pratensis R. D. Zortman 1963-5-5 32 Humboldt 5 mi. NE of Arcata, S of the Mad River, off Warren Creek Rd. 91 Comment
  HSC26627  Poa pratensis J. P. Smith, Steve Selva 1970-6-30 4104 Humboldt Comment
  UCD91937  Poa pratensis A. Murphy 1951-5-18 s.n. Humboldt W. Roscoe Ranch, Upper Mattole, near Mattole River. Comment
  HSC10379  Poa pringlei D. E. Anderson 1965-6-1 3765 Humboldt Horse Mountain. 1220 Comment
  UC184914  Poa secunda subsp. secunda Joseph P. Tracy 1912-7-31 3952 Humboldt near summit Buck Mt; Northern Coast Ranges 1676 Comment
  SEINET200570 Image available Poa trivialis J. P. Tracy 1909-6-13 2998 Humboldt On Mad River, 5 miles from its mouth, on damp banks in partial shade. 30 Comment
  HSC10810  Poa unilateralis J. P. Tracy 1927-6-8 8113 Humboldt Trinidad 61 Comment
  UCD92123  Poa unilateralis A. A. Beetle 1940-5-19 3612 Humboldt near H.E. Parks Reservoir, California coast. Comment
  OBI13588  Pogogyne zizyphoroides Joseph P. Tracy 1946-5-30 17544 Humboldt Carlotta. Open flat by old Strong's District School House, 5 mi E of town Comment
  CHSC57441  Polygala californica L. P. Janeway 1984-6-20 849 Humboldt Slope above Klamath River at unnamed 'River Access' ca 1 mi north of Orleans. 198 Comment
  UC1198991  Polygala cornuta var. cornuta Joseph P. Tracy 1926-7-18 7744 Humboldt near South Fork; Northern Coast Ranges, Trinity River Valley 182 Comment
  UC672974  Polygonum bistortoides Joseph P. Tracy 1930-7-16 8924 Humboldt McKay Camp South Fork Mountain 1676 Comment
  UC1198087  Polygonum convolvulus Joseph P. Tracy 1947-8-10 17881 Humboldt Eureka 30 Comment
  HSC55108  Polygonum douglasii G. L. Clifton 1979-7-31 11849 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  UC672965  Polygonum douglasii subsp. douglasii Joseph P. Tracy 1940-8-25 16707 Humboldt High Prairie Northern Coast Ranges, Bald Mountain 1066 Comment
  UC1735921  Polygonum douglasii subsp. spergulariiforme Dean W. Taylor 1991-8-15 12301 Humboldt ridge 1 mile West of Horse Mountain, 1493 Comment
  UC175823  Polygonum lapathifolium Joseph P. Tracy 1912-10-20 4008 Humboldt Alton Northern Coast Region (bed of dried-up slough) 30 Comment
  HSC55062  Polygonum minimum G. L. Clifton, Griswold 1979-7-31 11624 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1719 Comment
  CAS-BOT-BC109186  Polygonum paronychia Ira L. Wiggins 1930-7-11 4685 Humboldt Near Samoa. Comment
  HSC17512  Polygonum paronychia J. W. Johnson 1961-8-17 1041 Humboldt Dune fields of W.M. Lanphere Farm, Samoa Peninsula Comment
  HSC59461  Polygonum paronychia M. A. Ericksen 1979-5-18 296 Humboldt Samoa Dunes, .5 mi. S of Simpson Timber Company plant entrance Comment
  RSA191950  Polygonum paronychia Robert F. Thorne 1957-9-3 19013 Humboldt Little River Beach, few miles S of Trinidad. Comment
  RSA472708  Polygonum paronychia E. A. Purer 1932-7-27 15975 Humboldt Samoa Comment
  UC672943  Polygonum paronychia Joseph P. Tracy 1930-7-21 8890 Humboldt s point of cape (near ocean shore); Cape endocino 3 Comment
  UC1198089  Polygonum parryi Joseph P. Tracy 1929-8-18 8658 Humboldt on river opposite Buck Mountain; Northern Coast Ranges, Van Duzen River, Dinsmore's Ranch 762 Comment
  UC672979  Polygonum phytolaccifolium Joseph P. Tracy 1933-7-26 12921 Humboldt Grouse Mountain; around old cabin 1524 Comment
  UC672952  Polygonum polygaloides subsp. kelloggii Joseph P. Tracy 1933-7-25 12868 Humboldt Grouse Mountain 1524 Comment
  UC1225799  Polygonum sachalinense Joseph P. Tracy 1946-8-25 17634 Humboldt 1/2 mi s mouth of Elk River 6 Comment
  JEPS19017  Polypodium glycyrrhiza Joseph P. Tracy 1925-11-25 7326 Humboldt near the S Fork Trinity River Valley; Northern Coast Ranges 182 Comment
  POM118352  Polypodium glycyrrhiza Marcus E. Jones 1924-4-26 s.n. Humboldt Scotia Comment
  UC163333  Polypodium glycyrrhiza J. P. Tracy 1909-10-7 3113 Humboldt near Redwood Creek Redwood Creek; Bald Hills 609 Comment
  HSC26398  Polypodium scouleri T. O. Osborne 1970-9-16 33 Humboldt Trinidad Bay, Prisoner Rock Comment
  SBBG34260  Polypodium scouleri M. Cady 1937-12-28 Humboldt Trinidad Comment
  UC1241361  Polypodium scouleri R. J. Rodin 1961-8-10 6807 Humboldt Sequoia Park Eureka; Sequoia Park Comment
  HSC10833  Polypogon maritimus J. P. Tracy 1933-7-20 12811 Humboldt Along Mad River, near Blue Lake. 15 Comment
  HSC10847  Polypogon monspeliensis R. H. Berg 1963-4-30 61 Humboldt Junction of Samoa Road and Hwy. 101, Arcata. Comment
  HSC55089  Polystichum munitum G. L. Clifton, Griswold 1979-7-31 11764 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa. 1845 Comment
  SBBG307  Polystichum munitum H. and M. Dearing 1939-5-27 3455 Humboldt Patrick's Point Comment
  UC1440062  Polystichum munitum Danin & H. G. Baker 1960-8-14 613 Humboldt ca. 1 mi toward Garberville from Myers Flat (Nelson Grove); Humboldt Redwoods State Park Comment
  CAS-BOT-BC76662  Polystichum munitum Ira L. Wiggins 1932-6-18 5871 Humboldt On hillside at mouth of Little River. Comment
  UC519316  Polystichum munitum Joseph P. Tracy 1933-7-21 12813 Humboldt 5 mi e Carlotta (Riverside Auto Park on Van Duzen River); North Coast Ranges 60 Comment
  UC528081  Polystichum munitum Ira L. Wiggins 1932-6-18 5871 Humboldt mouth of Little R. Comment
  HSC62984  Potamogeton natans David Wheeler 1979-4-20 Humboldt Clam Beach Ponds, .25 mi. S of Crannel Rd., between the frontage road and Hwy. 101 Comment
  RSA244505  Potamogeton richardsonii Larry E. DeBuhr, Gary D. Wallace 1973-9-14 1215 Humboldt On east side of Highway 101. Comment
  CDA26070  Potentilla anserina subsp. pacifica B. F. Kemp 1958-5-14 Humboldt Ferndale. 0 Comment
  HSC37576  Potentilla anserina subsp. pacifica J. D. Ackerman 1975-6-10 454 Humboldt 1 mi. N of Samoa Bridge turnoff from Samoa Blvd. S of Manila Comment
  HSC90766  Potentilla anserina subsp. pacifica Gail Newton 1982-5-5 2519 Humboldt Elk River Wildlife Area, Eureka Comment
  HSC93520  Potentilla anserina subsp. pacifica Gordon Leppig 1998-6-25 855 Humboldt McKinleyville, Mad River Estuary at end of Murray Rd. 0 Comment
  JEPS24329  Potentilla anserina subsp. pacifica Lincoln Constance 1934-6-18 903 Humboldt near South Fork R.R. Station and P.O. (border of North Dyerville Flat); South Fork Eel River, Bull Creek Region Comment
  HSC97614  Potentilla glandulosa subsp. glandulosa Cara Witte 2007-5-31 156 Humboldt Along National Forest Route 1. Near Kinsey Ridge. 1.25 miles north of intersection with 4N09. 1308 Comment
  HSC95735  Prosartes smithii Steven Lee 2004-4-13 20 Humboldt Arcata Community Forest, hillside along Jolly Giant Creek Comment
  CAS-BOT-BC517505  Prosartes smithii L. R. Abrams 1927-9-1 12061 Humboldt Big Lagoon Comment
  CAS-BOT-BC517510  Prosartes smithii Doris K. Kildale 1930-4-27 9563 Humboldt Prairie Creek, near Orick Comment
  SEINET12044820  Prosartes smithii Unknown 1933-1 3413 Humboldt Dyerville, South Fork of Eel River Comment
  HSC14303  Prunella vulgaris subsp. lanceolata William J. Ferlatte, B. D. Rodgers 1966-6-7 2083 Humboldt 1 mi. E of Forest Glen 732 Comment
  HSC63631  Prunella vulgaris subsp. lanceolata J. P. Smith, Steve Selva 1970-6-30 4100 Humboldt Comment
  HSC102529  Prunella vulgaris var. lanceolata M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-28 1516 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1106 Comment
  POM257596  Prunella vulgaris var. lanceolata H. E. Parks, S. T. Parks 1937-07 24052 Humboldt Spruce Cove, Trinidad. 61 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
  UCR122359  Prunella vulgaris var. lanceolata George K. Helmkamp, E. A. Helmkamp 2001-7-8 6981 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
  UCD125337  Prunella vulgaris var. lanceolata Roman Gankin 1965-8-6 560 Humboldt 2.5 miles SW of Capetown. Comment
  CAS-BOT-BC159979  Prunus emarginata H. E. McMinn 1922-8-5 354 Humboldt Along Van [Dusen] Duzen River Comment
  CAS-BOT-BC159980  Prunus emarginata Joseph P. Tracy 1934-9-5 13656 Humboldt Horse Mountain 1402 Comment
  CAS-BOT-BC159986  Prunus emarginata Doris K. Kildale 1925-8-17 1228 Humboldt Trinity Summit 1917 Comment
  UC1198770  Prunus emarginata Joseph P. Tracy 1920-4-18 5314 Humboldt around Humboldt Bay (Mad River, near bridge on Trinidad Road); Northern Coast Region, Mad River 15 Comment
  UC14175  Prunus virginiana var. demissa W. C. Blasdale 1896-6-8 Humboldt Mad River Comment
  HSC5694  Pseudognaphalium ramosissimum Jerry Parker 1968-11-19 244 Humboldt Clam Beach, 1/4 mi. S of Strawberry Cr. Comment
  UC1223106  Pseudognaphalium thermale Joseph P. Tracy 1948-9-5 18184 Humboldt on ridge 2 mi e Grove's Prairie (near Elk Camp on the Grizzly Camp Road); Trinity Summit 1524 Comment
  CAS-BOT-BC80114  Pseudotsuga menziesii Doris K. Kildale 1927-5-7 3114 Humboldt Elk Ridge Comment
  HSC99550  Pseudotsuga menziesii K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-8-10 215 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  RSA1658  Pseudotsuga menziesii C. B. Wolf 1930-10-29 sn Humboldt Old Coast Rd. 7 mi S of Honeydew Post Office. 305 Comment
  UC535777  Pseudotsuga menziesii Eleanor Armstrong 1934-8-15 1186 Humboldt Richardson Grove Richardson Grove (on hillslopes) 121 Comment
  HSC40003  Pseudotsuga menziesii var. menziesii Linda M. Barker 1976-9-3 1689 Humboldt Lanphere-Christensen Dunes, 3 mi. W of Arcata. Comment
  HSC54524  Pseudotsuga menziesii var. menziesii Overton, Butler 1979-7-23 9458 Humboldt Near Horse Mountain Mine, close to the town of Willow Creek 1295 Comment
  HSC55105  Pseudotsuga menziesii var. menziesii G. L. Clifton 1979-7-31 11847 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  HSC70640  Pseudotsuga menziesii var. menziesii R. York 1980-5-18 593 Humboldt Near Black Mtn. 792 Comment
  NY63912  Pseudotsuga menziesii var. menziesii J. P. Tracy 1932-3-19 9789 Humboldt Blue Slide, on Van Duzen River Comment
  UC198649  Psilocarphus tenellus Joseph P. Tracy 1917-5-27 4783 Humboldt Eureka Northern Coast Ranges 0 Comment
  HSC100525  Psoralea physodes Carl C. Marshall Jun 1885 11 Humboldt Pilot Creek. Comment
  CAS-BOT-BC72555  Pteridium aquilinum Ira L. Wiggins 1930-7-11 4684 Humboldt near Samoa Comment
  CAS-BOT-BC421116  Pterostegia drymarioides Joseph P. Tracy 1933-5-20 12226 Humboldt Cape Mendocino. South of point of the Cape. 30 Comment
  CAS-BOT-BC460597  Pyrola aphylla Henry M. Pollard 1943-8-1 s.n. Humboldt Orleans 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
  UC32692  Pyrola asarifolia Joseph P. Tracy 1898-7-1 248 Humboldt Kneeland Prairie 1066 Comment
  JEPS66560  Pyrola asarifolia subsp. bracteata Lincoln Constance 1934-6-8 835 Humboldt Cow Creek fire-trail from Bull Cr road n over the divide into the headwaters Bear Cr (Bull Creek Region, South Fork Eel River); South Fork Eel River, Bull Creek Region Comment
  HSC74286  Pyrola dentata M. A. Baker 1980-7-11 2780 Humboldt Near Red Mtn. 1341 Comment
  HSC98808  Pyrola dentata Cara Witte 2008-7-30 980 Humboldt Horse Mountain Botanical Area. Forest Service Road 6N32E. Comment
  UC562733  Pyrola picta Joseph P. Tracy 1932-7-14 10569 Humboldt Trinity Summit, near Corral Prairie 1584 Comment
  UC314639  Pyrola picta Joseph P. Tracy 1926-6-6 7564 Humboldt Hoopa Mountain. On road west from Hoopa Valley 914 Comment
  CAS-BOT-BC62673  Quercus chrysolepis Doris K. Kildale 1926-3-21 1689 Humboldt McDowell Butte, Kneeland Prairie 914 Comment
  HSC70845  Quercus chrysolepis M. A. Baker 1980-6-7 1828 Humboldt Near Ammon Creek 732 Comment
  JEPS38040  Quercus chrysolepis Lincoln Constance 1934-6-15 885 Humboldt Summit of Grasshopper Peak South Fork Eel River, Bull Creek Region 975 Comment
  POM270213  Quercus chrysolepis Lyman Benson 1928-7-14 519 Humboldt Richardon's Grove of Redwoods, Redwood Highway, south county boundary, Middle N Coast Mt. Range, South Fork of Eel River. 122 Comment
  UC249714  Quercus garryana Joseph P. Tracy 1921-10-2 5965 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  POM270132  Quercus garryana var. garryana Lyman Benson 1929-7-11 1758 Humboldt North of Garberville about 10 miles. Comment
  RSA609410  Quercus garryana var. garryana Louis C. Wheeler 1958-8-7 7369 Humboldt Fort Baker Manganese Mine. Comment
  UC1196512  Quercus sadleriana Joseph P. Tracy 1935-7-23 14155 Humboldt lower end of Brett Hole Trinity Summit, Brett Hole 1584 Comment
  UCD47220  Quercus sadleriana Milo S. Baker 1947-8-10 11896 Humboldt 16 mi. N.E. of Hoopa along trail to Trinity Summit from end of forest Rd. 1463 Comment
  UC1196537  Quercus vacciniifolia Joseph P. Tracy 1935-7-14 14065 Humboldt back of Clear Lake; North Coast Ranges, Grouse Mountain 1524 Comment
Read comments
Dec 14 2007
  UC1196539  Quercus vacciniifolia Joseph P. Tracy 1932-7-18 10721 Humboldt Head of Brett Hole Klamath Mountains, Trinity Summit 1828 Comment
  UC1196510  Quercus wislizeni Joseph P. Tracy 1938-6-9 15883 Humboldt North Dobbyn Creek Dobbyn Creek 152 Comment
  HSC100904  Ranunculus Carl C. Marshall Apr 1886 87 Humboldt Humboldt Hill. Comment
  UC1196259  Ranunculus alismifolius Joseph P. Tracy 1912-7-31 3905 Humboldt Burr Valley Northern Coast Ranges, Buck Mountain (nw slope of mt.) 1066 Comment
  HSC56169  Ranunculus alismifolius var. hartwegii G. L. Clifton, Griswold 1979-8-1 12060 Humboldt Near N Trinity Mtn., close to the town of Hoopa. 1798 Comment
  CAS-BOT-BC378852  Ranunculus californicus var. californicus Doris K. Kildale 1926-3-20 1549 Humboldt Near mouth of Little River Comment
  CAS-BOT-BC378853  Ranunculus californicus var. californicus Doris K. Kildale 1926-3-21 1585 Humboldt Kneeland Prairie 488 Comment
  UC9434  Ranunculus flammula Harley P. Chandler May, 1901 1130 Humboldt Humboldt Bay North Coast Ranges 30 Comment
  HSC18154  Ranunculus muricatus J. L. Baker 1965-4-10 35 Humboldt 4 mi. N of Arcata on N Bank Rd. Comment
  RSA523409  Ranunculus occidentalis G. H. True 1936-5-11 466 Humboldt E slope of Elk Ridge, 12 miles W of Miranda. 457 Comment
  SEINET200319  Ranunculus occidentalis J. T. Gregory 381 Humboldt Grouse Mtn near 'Clear Lake 1524 Comment
  HSC18159  Ranunculus occidentalis var. occidentalis A. E. Inman 1962-5-25 Humboldt Mad River, Lindsey Creek junction: N Bank; 100 yards W of Lindsey Creek Comment
  HSC18160  Ranunculus occidentalis var. occidentalis Harvey Doerksen 1962-5-22 30 Humboldt Camp Bauer, across Mad River from Korbel Comment
  CDA3497  Ranunculus parviflorus E. C. Whitney 1962-5-29 Humboldt Millsap property, Pepperwood. 0 Comment
  JEPS79962  Ranunculus repens Joseph P. Tracy 1918-4-7 4868 Humboldt Little River Northern Coast Ranges (mouth) 30 Comment
  UC838004  Ranunculus repens Eliz. Parsons Hawver Jun 1915 Humboldt Carlotta Comment
  HSC95591  Ranunculus repens Andrea Pickart 2002-3-31 24 Humboldt Arcata Marsh, Dan Hauser Marsh 0 Comment
  HSC99489  Ranunculus repens K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-14 148 Humboldt Near North Trinity Mtn, 11. 9 mi east of Hoopa on Big Hill Rd (8N01), at Box Camp, Six Rivers National Forest. 1372 Comment
  HSC18203  Ranunculus repens var. repens Richard Steele 1962-5-1 20 Humboldt Arcata, 0.5 mi. W of HSC campus 15 Comment
  UCD16181  Ranunculus sardous J. DiTomaso 2000-8-12 s.n. Humboldt Arcata bottoms along Seidel Rd. Comment
  HSC56103  Ranunculus uncinatus G. L. Clifton 1979-7-31 11830 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  POM246499  Rhamnus californica Carl B. Wolf 1934-6-30 5842 Humboldt Back of Shelter cove. 61 Comment
  JEPS42008  Rhamnus californica subsp. californica W. L. Jepson 1902-7-10 2001 Humboldt South Fork, junction of Trinity River, Martin ranch Trinity River 304 Comment
  UC177180  Rhamnus purshiana Joseph P. Tracy 1913-6-13 4108 Humboldt opposite Buck Mountain (Dinsmore's Ranch); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  HSC91899  Rhododendron columbianum Susan H. Bicknell 1987-9-1 Humboldt Patrick's Point State Park, Penn Creek campground Comment
  CAS-BOT-BC56608  Rhododendron macrophyllum A. A. Heller 1937-6-8 15898 Humboldt in the forest at Bishop Pine Lodge, 3 miles north of Trinidad Comment
  HSC74334  Rhododendron macrophyllum Gail Newton 1980-6-16 153 Humboldt Near Monks Camp 1097 Comment
  RSA257021  Rhododendron macrophyllum Gary D. Wallace, Larry E. DeBuhr, G. Ansley Wallace 1972-5-22 1070 Humboldt Northwest of Orick along southern boundary of Prairie Ck, Redwoods St. Pk. along Davison Rd. toward Gold Bluff Beach. Comment
  HSC36437  Rhododendron occidentale var. paludosum John Rehling 1974-7-8 5 Humboldt County park at Big Lagoon Comment
  HSC53831  Ribes binominatum Griswold, Butler 1979-7-10 6279 Humboldt Near Board Camp Mtn., close to the town of Willow Creek 1372 Comment
  HSC58142  Ribes binominatum Gilbert Muth 1979-8-1 12167 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1677 Comment
  HSC97303  Ribes bracteosum M. Mesler 2007-3-14 738 Humboldt Along Hwy. 101 at Orick Refuse Site (E side of Hwy.) 9 Comment
  RSA152409  Ribes inerme Joseph P. Tracy 1941-3-26 16813 Humboldt Lack Pond: in Trinity River Valley, opposite mouth of Willow Creek. 152 Comment
  CDA25540  Ribes lobbii Gordon Leppig 1998-6-1 866 Humboldt Horse Mountain. Buck Flat, Titlow Hill Road at Ammon Ridge Road. Comment
  HSC102024  Ribes lobbii M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-12 925 Humboldt Along trail from Rustic Camp to Patterson Meadows 1534 Comment
  HSC56309  Ribes lobbii Overton, Butler 1979-8-2 12628 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  UC1198937  Ribes marshallii Joseph P. Tracy 1932-7-15 10591 Humboldt ridges e Corral Prairie; Klamath Mountains, Trinity Summit 1828 Comment
  UC552232  Ribes menziesii Joseph P. Tracy 1934-8-11 13565 Humboldt 2 mi e Arcata (Fickle Hill); North Coast Ranges 304 Comment
  HSC32154  Ribes roezlii D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5594 Humboldt Mt. Lassic and two smaller peaks to immediate E 1768 Comment
  HSC70757  Ribes roezlii R. York 1980-5-17 526 Humboldt Near Le Perron Peak 792 Comment
  HSC71034  Ribes roezlii Thomas W. Nelson 1977-4-20 3326 Humboldt Along FS Rd. 1N15 at bridge over Mad River 762 Comment
  HSC74339  Ribes roezlii M. A. Baker 1980-5-18 1290 Humboldt Near Black Mtn. 1006 Comment
  UC1193214  Ribes roezlii P. Zinke 1950-8-4 153 Humboldt 2 mi w Harris Post Office (outside national forest); Quad. 29D3 853 Comment
  UC1198945  Ribes roezlii Joseph P. Tracy 1932-3-19 9788 Humboldt Blue Slide Northern Coast Ranges, Van Duzen River 91 Comment
  UCSB24364  Ribes roezlii Tracy, Joseph 1933-3-5 Humboldt north coast ranges 30 Comment
  CAS-BOT-BC198902  Ribes roezlii var. cruentum Kenneth Clark 1980-3-27 55 Humboldt North fork Dead Man's Gulch, Shelter Cove 82 Comment
  HSC20343  Ribes sanguineum D. E. Anderson 1962-2-10 1913 Humboldt 1.0 mi. S of Big Lagoon school along abandoned stretch of Hwy. 101 Comment
  UC667053  Ribes sanguineum Joseph P. Tracy 1935-7-25 14246 Humboldt lower end Brett Hole; Trinity Summit 1584 Comment
  CAS-BOT-BC144689  Ribes sanguineum var. glutinosum C. Epling; Wm. Robison 1935-7-22 s.n. Humboldt Patrick's Point Comment
  SFV18511  Ribes sanguineum var. glutinosum M. Cavelti 2002-3-2 4 Humboldt Trinidad State Beach. 20 feet west of steps down to College Cove. 38 Comment
  UC1198912 Image available Ribes sanguineum var. glutinosum Joseph P. Tracy 1912-3-31 3563 Humboldt near mouth Lindsey Creek; Northern Coast Ranges 30 Comment
  UC154116  Ribes sanguineum var. glutinosum J. P. Tracy 1909-3-29 2948 Humboldt immediate vicinity Eureka 0 Comment
  CAS-BOT-BC144695  Ribes sanguineum var. glutinosum H. E. McMinn 1922-8-4 340 Humboldt along Van Dusen River Comment
  RSA0018245  Ribes sanguineum var. glutinosum Thomas W. Nelson, James Nelson 1976-3-11 2266 Humboldt Beside the Eel River just north of the terminus of Singley Rd. Comment
  HSC99358  Ribes sanguineum var. sanguineum K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-6-24 7 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  CHSC97983  Ribes viscosissimum April A. Allard; Gregory D. O'Connell 2005-6-15 13 Humboldt NE of Grouse Mtn. Roadside. 5339 Comment
  HSC97475  Ribes viscosissimum Cara Witte 2007-5-23 110 Humboldt Forest Service Road 4N70 to Grouse Mountain Lookout. 1601 Comment
  HSC69840  Romanzoffia californica R. Kalal 1979-5-6 52 Humboldt Trinidad Head 30 Comment
  UC552251  Romanzoffia californica Joseph P. Tracy 1925-4-5 6954 Humboldt Kneeland Prairie Northern Coast Ranges, Kneeland Prairie 762 Comment
  HSC44065  Rorippa curvisiliqua Thomas W. Nelson, Jane P. Nelson 1977-8-6 3701 Humboldt Above Alder Spring 1585 Comment
  BLMAR535  Rosa gymnocarpa Jennifer Wheeler 2009-6-23 535 Humboldt King range, On Paradise Ridge road Comment
  CAS-BOT-BC146491  Rosa gymnocarpa Doris K. Kildale; L. B. Kildale 1930-5-24 9550 Humboldt Hoopa Valley 152 Comment
  CAS-BOT-BC146528  Rosa gymnocarpa M. S. Jussel 1931-5-2 67 Humboldt 20 miles north of Garberville Comment
  HSC32264  Rosa gymnocarpa J. O. Sawyer 1970-6-24 2249 Humboldt S of Mill Creek Gap, FS Rd. 10N02 1433 Comment
  HSC45400  Rosa gymnocarpa Thomas W. Nelson, Jane P. Nelson 1977-7-1 3571 Humboldt Along N side of ridge between Bear and Blanket Creeks 1494 Comment
  HSC57039  Rosa gymnocarpa Overton, Butler 1979-7-24 9675 Humboldt Near Friday Camp, close to the town of Willow Creek. 1250 Comment
  OBI35864  Rosa gymnocarpa David J. Keil 1983-7-2 17330 Humboldt Horse Mtn Summit SW of Willow crk Comment
  RSA254749  Rosa gymnocarpa Thomas W. Nelson, J. Nelson 1973-5-28 957 Humboldt McKeown Ranch north of Dinsmore. Comment
  UC527562  Rosa gymnocarpa C. B. Wolf 1931-8-30 2376 Humboldt 11 mi above Blue Lake (on Lord Ellis Rd to Willow Creek) 304 Comment
  UC1927277  Rosa luciae Barbara Ertter with Tom Nelson and Dick Brummitt 2004-7-2 18404 Humboldt Eureka, at edge of 14th Street where road crosses large drainage (opposite 1404 14th St.) Comment
  CAS-BOT-BC146826  Rosa nutkana Doris K. Kildale 1927-6-28 3606 Humboldt Mad River near covered bridge on Redwood Highway Comment
  SBBG3090  Rosa nutkana M. J. Cody 1938-7-14 Humboldt 2 mi N of Trinidad Comment
  UC588192  Rosa nutkana var. nutkana H. E. and S. T. Parks May 1937 5816 Humboldt Spruce Cove Trinidad 60 Comment
  UC902162  Rosa nutkana var. nutkana Joseph P. Tracy 1947-8-10 17883 Humboldt 2 mi s of town Field's Landing 6 Comment
  CHSC31292  Rosa pinetorum Mark Stopher 1980-7-11 115 Humboldt Along Elk River near Hwy 101 bridge. Comment
  UC902158  Rosa pisocarpa Joseph P. Tracy 1947-7-4 17813 Humboldt near Box Camp; Trinity Summit 1524 Comment
  JEPS47293  Rubus lasiococcus Joseph P. Tracy Jul 16 1930-Jul 19 1930 9021 Humboldt near McKay Camp (South Fork Mountain); Northern Coast Ranges, South Fork Mountain 1676 Comment
  CAS-BOT-BC148385  Rubus leucodermis Doris K. Kildale 1927-5-13 3138 Humboldt Redwood Creek at Berry's 289 Comment
  RSA46847  Rubus leucodermis Doris K. Kildale 1927-7-3 3662 Humboldt Willow Creek Flat. Comment
  CAS-BOT-BC147244  Rubus parviflorus Doris K. Kildale 1926-3-26 1635 Humboldt Old Kneeland Road 609 Comment
  HSC89607  Rubus parviflorus M. Roantree 1985-8-25 11 Humboldt E side of Trinidad Head along paved rd. Comment
  SBBG115409  Rubus parviflorus A. T. Leiser 1980-7-9 Humboldt N of Orick, Hwy 101 reroute, near Redwood Park Comment
  UC154504  Rubus spectabilis Harley P. Chandler May, 1901 1096 Humboldt Scotia North Coast Ranges, Scotia 60 Comment
  SEINET11908695  Rubus spectabilis Unknown 1977-1 7 Humboldt S end of Patricks Point State Park, ca 0.2 mi W of Hwy 101 & 5 mi N of Trinidad 61 Comment
  UCSB31471  Rubus spectabilis Clark, Sharon 1978-3-29 Humboldt 119.5 miles on Route 101, 2 miles south of Orick 91 Comment
  UCD17614  Rubus ursinus H. Olmo; T. S. Mallah 1946-6-26 46- 051 Humboldt California. Humboldt County: 23.1 miles from Ettersburg on road to Dyerville. Comment
  UCD17619  Rubus ursinus H. Olmo; T. S. Mallah 1946-6-26 46- 045 Humboldt California. Humboldt County: 2.3 miles north of Ettersburg on road to Honeydew. Comment
  HSC35025  Rudbeckia occidentalis K. Irwin 1975-8-16 Humboldt Grogans Hole area. Comment
  UC146145  Rumex J. P. Tracy 1906-8-18 2543 Humboldt immediate vicinity Eureka 0 Comment
  HSC55016  Rumex acetosella Overton, Butler 1979-7-31 11408 Humboldt Near Water Dog Lakes, close to the town of Hoopa 1830 Comment
  HSC73450  Rumex acetosella Gail Newton 1980-7-14 1467 Humboldt Near Last Chance Ridge. 1219 Comment
  HSC76221  Rumex acetosella Overton, Butler 1979-7-24 9767 Humboldt Near Black Rock, close to the town of Willow Creek 1463 Comment
  HSC79444  Rumex acetosella Kenneth Clark 1980-3-27 549 Humboldt Open areas and terraces above Dead Man's Gulch 107 Comment
  HSC99462  Rumex acetosella K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-7 116 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  UCSB30608  Rumex acetosella Edwards, David 1974-8-12 Humboldt North side of 7th St., just W. of its overpass of U.S. 101, Arcata. 18 Comment
  HSC70987  Rumex californicus Gail Newton 1980-7-20 1650 Humboldt Near Bell Swamps 1426 Comment
  SEINET10501996  Ruppia maritima Mary Susan Taylor 1982-10-24 Taylor 5179 Humboldt T5N R1W nw sec 15. Eureka quad. Samoa, under bridge, ca. 1 mi nw of Eureka. Sea level. Sandy soils. 0 Comment
  JEPS79973  Sagina maxima subsp. crassicaulis Joseph P. Tracy 1940-5-18 16564 Humboldt Trinidad 15 Comment
  HSC24772  Sagina maxima subsp. crassicaulis Barbara Kelly 1971-8-18 174 Humboldt Trinidad State Beach Comment
  UCD98453  Sagina maxima subsp. crassicaulis Joseph P. Tracy 1947-9-1 17927 Humboldt Big Lagoon. 6 Comment
  HSC63012  Salicornia depressa David Wheeler 1979-5-22 130 Humboldt Samoa, intersection of Samoa Blvd. and the railroad tracks near Arcata Redwood Co. Comment
  UC1196721  Salix Joseph P. Tracy 1935-4-17 13775 Humboldt Alton to Fortuna; Eel R. 15 Comment
  RSA5652  Salix exigua H. E. Parks, Joseph P. Tracy 1931-5-17 971 Humboldt Mouth of Willow Creek at Trinity River. 150 Comment
  SD990  Salix exigua var. hindsiana Harold E. Parks 1931-8-25 1061 Humboldt Blue Slide, Van Duzen River 89 Comment
  UC469443  Salix exigua var. hindsiana Joseph P. Tracy 1931-9-7 9642 Humboldt at Willow Creek Trinity R. Valley; Northern Coast Ranges, Trinity R. Valley 152 Comment
  UC481299  Salix exigua var. hindsiana Harold E. Parks and Joseph P. Tracy 1931-5-17 968 Humboldt mouth of Willow Creek at Trinity R. 150 Comment
  CAS-BOT-BC106854  Salix hookeriana Carleton R. Ball; Harold E. Parks; Joseph P. Tracy 1932-5-11 01212 Humboldt 1 mile north of Samoa Comment
  CAS-BOT-BC107711  Salix hookeriana L. R. Abrams; G. T. Benson 1924-5-17 10734 Humboldt Eureka Comment
  CAS-BOT-BC107750  Salix hookeriana Harold E. Parks 1931-5-12 955 Humboldt Samoa, Humboldt Bay Comment
  CHSC9655  Salix hookeriana E. L. Smith 1971-8-18 1025 A Humboldt Clam Beach County Park ca. 6 mi s of Trinidad. Comment
  CHSC9658  Salix hookeriana E. L. Smith 1971-8-17 1028 Humboldt Between highway and beach at Trinidad. Comment
  POM106778  Salix hookeriana Marcus E. Jones 1924-4-26 s.n. Humboldt Eureka. Comment
  UC469120  Salix hookeriana Joseph P. Tracy 1927-4-23 7922 Humboldt Big Lagoon Northern Coast Ranges 6 Comment
  UC481279  Salix hookeriana Harold E. Parks 1931-8-1 1053 Humboldt Little River Lagoon Comment
  UC506505  Salix hookeriana Joseph P. Tracy 1932-8-27 10753 Humboldt Blue Slide Northern Coast Ranges, Van Duzen River 91 Comment
  UCD111036  Salix hookeriana Linda M. Barker 1976-4-13 1382 Humboldt 3 miles west of Arcata. Comment
  JEPS14756  Salix laevigata Joseph P. Tracy 1932-5-22 10122 Humboldt between Miranda and Redway (S. Fork Eel River); North Coast Ranges 91 Comment
  RSA5692  Salix laevigata H. P. Bracelin 1931-5-1 272 Humboldt Sylvandale, between Miranda and Meyers. S Fork of Eel River. Comment
  SBBG59090  Salix laevigata Mrs. H. P. Bracelin 1931-5-1 272 Humboldt Sylvandale, between Miranda and Meyers, S fork of Eel River Comment
  UC1173603  Salix laevigata Joseph P. Tracy 1935-5-25 13886 Humboldt Dobbyn Creek 152 Comment
  UC519390  Salix laevigata Joseph P. Tracy 1933-10-15 13095 Humboldt near Miranda (S. Fork Eel R.); North Coast Ranges, S. Fork Eel R. 91 Comment
  UC490517  Salix laevigata var. congesta Joseph P. Tracy 1932-5-22 10122 Humboldt between Miranda and Redway (S. Fork Eel R.); North Coast Ranges, S. Fork Eel R. 91 Comment
  UC490524  Salix lasiandra subsp. lasiandra Joseph P. Tracy 1932-4-17 9797 Humboldt Alton to Fortuna (Eel R.); Northern Coast Region, Eel R. 15 Comment
  CAS-BOT-BC128190  Salix lasiandra var. lasiandra Harold E. Parks 1931-5-14 0959 Humboldt Van Duzen River between Alton and Carlotta 15 Comment
  CAS-BOT-BC128196  Salix lasiandra var. lasiandra Doris K. Kildale 1926-3-7 1528 Humboldt Stephen's Grove, river bar - South Fork of Eel River 60 Comment
  CAS-BOT-BC107101  Salix lasiolepis Joseph P. Tracy 1934-3-11 13146 Humboldt Weitchpec, frequent along Klamath River 91 Comment
  CAS-BOT-BC107611  Salix lasiolepis Joseph P. Tracy; Harold E. Parks; Carleton R. Ball 1932-5-13 1253 Humboldt On gravelly floodplain of Mad River at Engelhart gravel pit, 2 miles east of Redwood Highway and above Blue Lake Road Comment
  CAS-BOT-BC107650  Salix lasiolepis Joseph P. Tracy; Harold E. Parks 1933-3-19 11007 Humboldt On Van Duzen River, 2 miles west of Bridgeville 228 Comment
  HSC98013  Salix lasiolepis Cara Witte 2007-7-20 566 Humboldt Board Camp Butte. Forest Serivce Road 4E27. 1460 Comment
  JEPS12917  Salix lasiolepis Joseph P. Tracy 1927-8-7 8305 Humboldt Redwood Creek at Berry's; Northern Coast Ranges 274 Comment
  JEPS12930  Salix lasiolepis Joseph P. Tracy 1931-5-31 9327 Humboldt Redwood Creek at Berry's; Northern Coast Ranges 274 Comment
  JEPS12943  Salix lasiolepis Joseph P. Tracy 1930-6-15 8737 Humboldt near Bosworth's Larrabee Creek; Northern Coast Ranges 457 Comment
  UC469437  Salix lasiolepis Joseph P. Tracy 1931-10-12 9731 Humboldt Dinsmore's Ranch Northern Coast Ranges, Van Duzen River (opposite Buck Mt.) 670 Comment
  UC471108  Salix lasiolepis Joseph P. Tracy 1931-9-26 9695 Humboldt at Berry's Redwood Creek; Northern Coast Ranges, Redwood Creek 274 Comment
  UC481340  Salix lasiolepis Harold E. Parks 1931-10-15 1076 Humboldt Bishop Pine Lodge Trinidad; , Bishop Pine Lodge 75 Comment
  UC504022  Salix lasiolepis Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-13 1254 Humboldt 2 mi E of Redwood Highway ( Mad River at Engelhart gravel pit, above Blue Lake) Comment
  UC506342  Salix lasiolepis Joseph P. Tracy 1933-4-9 10966 Humboldt Bridgeville, along Van Duzen River 228 Comment
  UC512032  Salix lasiolepis Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-17 1327 Humboldt e Redwood Creek (w slope of mt., on Trinity Hwy); Berry's Mountain 762 Comment
  SEINET12003293  Salix lasiolepis J. P. Tracy 1950-1 18623 Humboldt Van Duzen River, 10 mi SE of Dinsmore's, 4 mi SE of Kuntz Comment
  CAS-BOT-BC107290  Salix lasiolepis var. bigelovii Carleton R. Ball; Harold E. Parks; Joseph P. Tracy 1932-5-12 01239 Humboldt floodplain of Van Duzen River at Blue Slide 91 Comment
  CAS-BOT-BC107296  Salix lasiolepis var. bigelovii Harold E. Parks 1931-5-14 0963 Humboldt Van Duzen River between Alton and Carlotta 15 Comment
  CAS-BOT-BC107300  Salix lasiolepis var. bigelovii Doris K. Kildale 1926-12-19 2873 Humboldt South Fork 51 Comment
  RSA273414  Salix lucida subsp. lasiandra Thomas W. Nelson 1976-3-22 2278 Humboldt Along S side of the Eureka Muni Golf Course. Comment
  HSC20058  Salix melanopsis H. E. Parks 1931-5-14 964 Humboldt Van Duzen River, between Alton and Carlotta 15 Comment
  LA208878  Salix melanopsis Harold E. Parks; Joseph P. Tracy 1931-5-17 972 Humboldt mouth of Willow Creek at Trinity River 150.0 Comment
  SBBG57930  Salix melanopsis H. E. Parks, J. P. Tracy 1931-5-17 972 Humboldt mouth of Willow Crk at Trinity River 150 Comment
  SBBG57932  Salix melanopsis H. E. Parks 1931-5-14 956 a Humboldt Van Duzen River above Bridgeville 300 Comment
  UC1196563  Salix melanopsis Joseph P. Tracy 1931-10-3 9705 Humboldt on Van Duzen R. Blue Slide; Northern Coast Ranges, Van Duzen R., Blue Slide 91 Comment
  UC469452  Salix melanopsis Joseph P. Tracy 1931-9-7 9641 Humboldt Trinity R. Valley at Willow Creek; Northern Coast Ranges, Trinity R. Valley, Willow Creek 152 Comment
  UC470454  Salix melanopsis Joseph P. Tracy 1931-9-7 9646 Humboldt Trinity R. Valley at Willow Creek; Northern Coast Ranges, Trinity R. Valley, Willow Creek 152 Comment
  UC481170  Salix melanopsis Harold E. Parks 1931-8-25 1061 Humboldt Van Duzen R. Blue Slide; , Blue Slide 90 Comment
  UC481265  Salix melanopsis Harold E. Parks 1931-5-28 1019 Humboldt Little River Lagoon Comment
  UC481294  Salix melanopsis Harold E. Parks 1931-5-14 965 Humboldt between Alton and Carlotta (Van Duzen R.); Van Duzen R. 15 Comment
  UC519362  Salix melanopsis Joseph P. Tracy 1933-6-7 12515 Humboldt on Van Duzen R. Blue Slide; Northern Coast Ranges, Van Duzen R. 91 Comment
  UC519370  Salix melanopsis Joseph P. Tracy 1933-6-9 12531 Humboldt along Eel R. Shively; Northern Coast Ranges, Eel R., Shively 30 Comment
  RSA0038342  Salix melanopsis var. tenerrima Harold E. Parks, Joseph P. Tracy 1931-5-17 0972 Humboldt Mouth of Willow Creek at Trinity River. 150 Comment
  CAS-BOT-BC129201  Salix piperi Carleton R. Ball; Harold E. Parks; Joseph P. Tracy 1932-5-11 1210 a Humboldt Little River Lagoon, 4 1/2 miles south of Trinidad, appraximately at sea level. Comment
  CAS-BOT-BC129175  Salix scouleriana W. R. Dudley 1899-6-1 s.n. Humboldt Eureka Peninsula Comment
  HSC20084  Salix scouleriana H. E. Parks 1931-5-14 957 Humboldt Little Laribee Ridge, Van Duzen River Comment
  OBI35882  Salix scouleriana David J. Keil 1983-7-1 17291 Humboldt Between Ferndale and Bear River Ridge Rd along Mattole Rd Comment
  SD883  Salix scouleriana Harold E. Parks 1931-5-14 957 Humboldt Little Larabee Bridge, Van Duzen River 449 Comment
  SJSU172  Salix scouleriana H. E. Parks 1931-5-14 957 Humboldt Little Larabee Bridge, Van Duzen R 448 Comment
  UC1196694  Salix scouleriana Joseph P. Tracy 1932-10-12 10876 Humboldt along S. Fork Eel R. Miranda; Northern Coast Ranges, S. Fork Eel R., Miranda 91 Comment
  UC490529  Salix scouleriana Joseph P. Tracy 1932-7-13 10507 Humboldt open groung at Corral Prairie (back from the meadows); Klamath Mts., Trinity Summit, Corral Prairie 1524 Comment
  UC490540  Salix scouleriana Joseph P. Tracy 1932-7-20 10739 Humboldt on trail below Corral Prairie; Klamath Mts., Trinity Summit 1371 Comment
  UC525977  Salix scouleriana H. E. Parks 1933-1-24 1353 Humboldt Spruce Cove (Parks Ranch) Trinidad; , Spruce Cove (Parks Ranch) Comment
  HSC20105  Salix sitchensis H. E. Parks 1931-3-24 910 Humboldt Trinidad Comment
  HSC37885  Salix sitchensis Thomas W. Nelson 1976-4-3 2287 Humboldt Van Duzen River at Grizzley Creek Comment
  HSC79493  Salix sitchensis Kenneth Clark 1980-3-24 545 Humboldt Alluvial terrace of Dead Man's Gulch 15 Comment
  JEPS38498  Salix sitchensis Milo S. Baker 1923-7-23 89 Humboldt Manning Creek Comment
  SBBG57993  Salix sitchensis H. E. Parks 1931-3-25 903 Humboldt Orick, Van Duzen River [probably Redwood Creek] 6 Comment
  UC1196716  Salix sitchensis Joseph P. Tracy 1926-2-21 7362 Humboldt on Van Duzen R. Blue Slide; Northern Coast Ranges, Van Duzen R., Blue Slide 91 Comment
  UC481274  Salix sitchensis Harold E. Parks 1931-5-28 1026 Humboldt Little River Lagoon Comment
  CAS-BOT-BC235016  Sambucus Volney Rattan 1878-1-1 s.n. Humboldt 3 mi. E Eureka Comment
  HSC31462  Sambucus racemosa var. racemosa Steve Selva, Roger Jensen 1974-8-28 99 Humboldt Behind Humboldt State University, Arcata. Comment
  HSC3966  Sambucus racemosa var. racemosa Harvey Doerksen 1962-5-4 7 Humboldt 0.25 mi. W of Korbel, S side of Mad River. Comment
  UC168999  Sambucus racemosa var. racemosa Joseph P. Tracy 1910-4-17 3116 Humboldt near Forks of Elk River; Northern Coast Region, region about Humboldt Bay 0 Comment
  HSC21610  Sanicula arctopoides S. J. Hawks 1965-3-12 1 Humboldt W of Eureka Airport Comment
  POM256866  Sanicula arctopoides Joseph P. Tracy 1936-5-30 14838 Humboldt Near Samoa on Humboldt Bay. 6 Comment
  UC1197112  Sanicula arctopoides J. P. Tracy 1899-4-9 303 Humboldt immediate vicinity of Eureka (at Bucksport); Bucksport 0 Comment
  HSC89601  Sanicula crassicaulis M. Roantree 1985-4-28 16 Humboldt W side of Trinidad Head, along trail Comment
  UC1197096  Sanicula crassicaulis Joseph P. Tracy 1925-3-29 6949 Humboldt Northern Coast Ranges, Miranda, South Fork Eel River South Fork Eel River; Northern Coast Ranges, Miranda, South Fork Eel River 91 Comment
  HSC55755  Sanicula graveolens G. L. Clifton, Terry Griswold 1979-7-26 10289 Humboldt Near Salmon Mtn., close to the town of Forks of Salmon 1935 Comment
  HSC99074  Sanicula graveolens Cara Witte 2008-6-11 705 Humboldt Horse Mountain Botanical Area. Forest Service Road 6N18. Near utility towers. 1438 Comment
  CHSC88615  Sanicula tracyi Linnea Hanson 1993-7-21 346 Humboldt Six Rivers National Forest. Mad River Rock Road. Comment
  JEPS972  Sanicula tuberosa Joseph P. Tracy 1933-7-11 12688 Humboldt North Coast Ranges, Grouse Mountain Grouse Mountain; North Coast Ranges, Grouse Mountain 1524 Comment
  UC314593  Sanicula tuberosa Joseph P. Tracy 1923-7-4 6528 Humboldt Northern Coast Ranges, Valley of South Yager Creek South Yager Creek; Northern Coast Ranges, Valley of South Yager Creek 762 Comment
  HSC32275  Sarcodes sanguinea D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-13 5629 Humboldt Westward lower slopes of Black Lassic near Trinity Co. line. 1585 Comment
  UC154268  Satureja douglasii P. E. Goddard 1901-7-12 80 Humboldt Hupa Valley Comment
  UC902008  Saxifraga mertensiana Joseph P. Tracy 1948-5-31 17999 Humboldt Harris 762 Comment
  RSA43848  Saxifragopsis fragarioides H. M. Pollard 1947-9-1 s.n. Humboldt Peak of Somes Mountain, near Orleans 1524 Comment
  CAS-BOT-BC111698  Schoenoplectus pungens var. badius David Daniels Keck 1938-8-5 4772 Humboldt Big Lagoon, among rocks in open spots on beach. Comment
  HSC21128  Scrophularia californica C. B. Wolf 1927-8-29 1207 Humboldt Devil's Gate, S of Cape Mendocino. Comment
  HSC89423  Scrophularia californica P. A. Daly 1984-5-8 13 Humboldt Trinidad Head 61 Comment
  HSC79542  Scrophularia californica Kenneth Clark 1980-5-10 630 Humboldt Shelter Cove, lower alluvial terrace of Dead Man's Gulch 9 Comment
  HSC40703  Sedum laxum subsp. heckneri Thomas W. Nelson, Jane P. Nelson 1976-7-1 2898 Humboldt Along ridge N of Bear Creek 1463 Comment
  HSC41479  Sedum laxum subsp. heckneri M. A. Baker 1977-6-13 383 Humboldt 4 mi. S of new confluence of the Klamath River and Bluff Creek Comment
  HSC59107  Sedum laxum subsp. heckneri M. A. Baker 1978-7-17 594 Humboldt On the N bank of the Salmon River, 5 km E of its confluence with the Klamth River Comment
  HSC59361  Sedum laxum subsp. heckneri M. A. Baker 1979-7-8 621 Humboldt 2 km S of the junction of the roads to Blue Creek Mtn. and Onion Lake 1400 Comment
  HSC57121  Sedum obtusatum subsp. retusum Overton, Butler 1979-7-25 9867 Humboldt Near Sims Mtn., close to the town of Willow Creek 1295 Comment
  HSC58050  Sedum obtusatum subsp. retusum G. L. Clifton, Griswold 1979-8-1 11911 Humboldt Near Mill Creek Lakes, close to the town of Hoopa. 1692 Comment
  CAS-BOT-BC63790  Sedum radiatum subsp. radiatum Doris Kildale Gillespie 1931-6-7 10602 Humboldt Soth Forb Mt. Blake Lookout. 1726 Comment
  SBBG2669  Sedum spathulifolium H. and M. Dearing 1939-5-24 3439 Humboldt cliffs above Ferndale Comment
  RSA0081471  Sedum spathulifolium Anstruther Davidson s.n. Humboldt Eel River. Comment
  UC1198844  Sedum spathulifolium Joseph P. Tracy 1944-8-13 17490 Humboldt along Trinity Highway Willow Creek Canyon (rock bluffs at Romanzoffia Creek); Romanzoffia Creek, Willow Creek Canyon 365 Comment
  HSC48308  Sedum spathulifolium var. spathulifolium R. Sutherland 1978-4-23 11 .23478 Humboldt Telegraph Ridge N of Green Ridge 695 Comment
  LA209677  Selaginella oregana Lawrence L. Kiefer; 1963-8-6 769 Humboldt Patrick's Point State Park, Lookout Rock 45 Comment
  UC1225807  Selaginella wallacei Joseph P. Tracy 1948-5-31 17998 Humboldt Harris 609 Comment
  CAS-BOT-BC69736  Selaginella wallacei Peter H. Raven 1952-5-31 4126 Humboldt Hills sw. of Rector Canyon. 152 Comment
  UC581696  Senecio glomeratus Joseph P. Tracy 1934-6-19 13234 Humboldt vicinity Carlotta 30 Comment
  UC128740  Senecio integerrimus var. major Joseph Burtt Davy and Walter C. Blasdale 1899-6-22 5846 Humboldt Trinity Summit Comment
  RSA254747  Senecio jacobaea Thomas W. Nelson 1973-9-3 1132 Humboldt McKeown Ranch north of Dinsmore. Comment
  HSC102100  Senecio triangularis M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 1003 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  HSC58095  Senecio triangularis G. L. Clifton, Griswold 1979-8-1 12011 Humboldt Near N Trinity Mtn., close to the town of Hoopa 1799 Comment
  UC581750  Senecio triangularis Joseph P. Tracy 1933-7-25 12846 Humboldt Grouse Mountain North Coast Ranges, Grouse Moutain 1524 Comment
  UC1223150  Senecio triangularis Joseph P. Tracy 1950-7-31 19241 Humboldt ne side top Grouse Mountain; ne side top of Grouse Mountain 1524 Comment
  POM174068  Senecio vulgaris Joseph P. Tracy 1918-4-21 4884 Humboldt Eureka. 0 Comment
  HSC100447  Senecio vulgaris Carl C. Marshall Mar 1886 139 Humboldt Logging camps. Comment
  HSC6129  Senecio vulgaris J. W. Johnson 1962-4-8 1215 Humboldt Arcata, Mad River Co. Park Comment
  HSC6132  Senecio vulgaris Frances Oldridge 1945-1 Humboldt College Hill Comment
  RSA10470  Sequoia sempervirens E. R. Johnson 1932-08 s.n. Humboldt Along the Redwood Highway on the Eel River Comment
  RSA175208  Sequoia sempervirens Robert F. Thorne 1957-9-2 18996 Humboldt Burlington State Park, just S of Weott. Comment
  UC1076381  Sequoia sempervirens H. MacGinitie 1932-6-7 Humboldt Comment
  UC1196921  Sequoia sempervirens J. P. Tracy 1897-2-22 153 Humboldt immediate vicinity Eureka 0 Comment
  UC1222350  Sequoia sempervirens Joseph P. Tracy 1950-12-18 19387 Humboldt Parks's Place Trinidad, Parks' Place 3 Comment
  UC180191  Sericocarpus oregonensis subsp. oregonensis Joseph P. Tracy 1914-9-6 4620 Humboldt Bald Mountain, between High Prairie and Snow camp Bald Mountain 1066 Comment
  SEINET11802379  Sericocarpus rigidus J. P. Tracy 1950-1 19378 Humboldt about 3 mi SW of Orleans Comment
  HSC12661  Sherardia arvensis J. F. Knezevich 1968-5-21 444 Humboldt 20 mi. E of Arcata on Hwy. 299 at Lord Ellis Summit Comment
  UC1197964  Sidalcea malachroides Joseph P. Tracy 1937-6-20 15358 Humboldt s Ferndale (Wild Cat Ridge); s of Ferndale, Wild Cat Ridge 457 Comment
  HSC93949  Sidalcea malviflora subsp. patula D. K. Imper, Clare Golec 1999-6-2 Humboldt Junction of Riverside Rd. and Hwy. 36 91 Comment
  UC1222505  Sidalcea malviflora subsp. patula Joseph P. Tracy 1950-6-8 18734 Humboldt 7 mi s Ferndale (Bear River Ridge); , s of Ferndale 609 Comment
  UC146163  Sidalcea malviflora subsp. patula J. P. Tracy 1905-6-11 2194 Humboldt immediate vicinity Eureka (at Buckport); immediate vicinity of Eureka, at Bucksport 0 Comment
  UC668134  Sidalcea malviflora subsp. patula Joseph P. Tracy 1936-6-9 14877 Humboldt Bear River Ridge Northern Coast Ranges, Bear River Ridge 609 Comment
  CAS-BOT-BC5793  Sidalcea oregana subsp. eximia Joseph Prince Tracy 1907-6-25 2578 Humboldt In valley of Elk River, region about Humboldt Bay 152 Comment
  UC902190  Sidalcea oregana subsp. eximia Joseph P. Tracy 1949-8-11 18461 Humboldt Snow Camp 1432 Comment
  HSC56404  Sidalcea oregana subsp. spicata Griswold, Butler 1979-7-11 7000 Humboldt Near Snow Camp Lake, close to the town of Willow Creek. 1393 Comment
  HSC74227  Sidalcea oregana subsp. spicata M. A. Baker 1980-7-22 3089 Humboldt Near Grogan Hole. 1676 Comment
  UC902189  Sidalcea oregana subsp. spicata Joseph P. Tracy 1947-7-5 17822 Humboldt Box Camp Meadow Trinity Summit, Box Camp Meadow 1463 Comment
  HSC71746  Silene M. A. Baker 1980-6-26 2430 Humboldt Near Sims Creek 610 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
  HSC82112  Silene bolanderi Thomas W. Nelson, Jane P. Nelson 1980-5-25 5256 Humboldt Along road from Dinsmore to Anderson Crossing, McKeown Ranch Rd. 100 m N of junction of road to Hindley Cabin 823 Comment
  POM286444  Silene californica Lyman Benson 1929-7-19 1659 Humboldt Mouth of Matole River. Comment
  RSA47132  Silene californica Doris K. Kildale 1927-8-16 1139 Humboldt Trinity Summit Trail beween Patterson s and Horse Linto Creek. 213 Comment
  UC1541413  Silene californica H. E. and S. T. Parks May 1930 751 Humboldt near Hydesville; near Hydesville Comment
  JEPS23252  Silene campanulata subsp. campanulata Joseph P. Tracy 1937-7-29 15590 Humboldt w slope near top at Hyampom Trail , Hyampom Trail (South Fork Mountain) 1676 Comment
  CAS-BOT-BC174879  Silene campanulata subsp. glandulosa Volney Rattan 1883-1-1 s.n. Humboldt Hoopa Valley Comment
  CAS-BOT-BC174880  Silene campanulata subsp. glandulosa Joseph P. Tracy 1930-7-18 9032 Humboldt South Fork Mountain. Near McKay Camp 1676 Comment
  HSC40965  Silene gallica Linda M. Barker 1976-6-14 1593 Humboldt 3 mi. W of Arcata Comment
  UC162886  Silene hookeri Harley P. Chandler June, 1901 1539 Humboldt Klamath River North Coast Ranges, Klamath River 304 Comment
  CAS-BOT-BC389055  Silene laciniata subsp. californica Carl B. Wolf 1927-8-27 1161 Humboldt On the Klamath River 11 miles above Weitchpec Comment
  UC465640  Silene latifolia subsp. alba Mrs. M. H. Manning 1901-1 Humboldt near Hupa (Hoopa Valley); near Hupa, Hoopa Valley Comment
  JEPS23248  Silene lemmonii Joseph P. Tracy 1932-7-12 10452 Humboldt near Corral Prairie (Trinity Summit); , near Corral Prairie 1584 Comment
  UC180226  Sinapis arvensis Joseph P. Tracy 1914-10-11 4635 Humboldt at Eureka Eureka; Northern Coast Region, Eureka 0 Comment
  UC1198791  Sisymbrium altissimum Joseph P. Tracy 1929-8-18 8660 Humboldt on Van Duzen River, Dinsmore's Ranch, opposite Buck Mountain Van Duzen River; Northern Coast Ranges, , Dinsmore's Ranch 670 Comment
  HSC91874  Sisyrinchium californicum E. Mackey 1986-5-13 Humboldt Patrick's Point State Park Comment
  UC667000 Image available Sisyrinchium hitchcockii Joseph P. Tracy 1938-6-17 15947 Humboldt 3 mi e of Cape Mendocino; Cape Ridge 304 Comment
  UCR45836  Smilacina stellata Barry Silver 1986-4-23 537 Humboldt North Coast Range, Bair Road, 9.5-10 mi NW of the junction with Hwy 299; Pine Ridge Summit Area 997 Comment
  RSA46494  Solanum americanum Doris K. Kildale 1926-2-7 1496 Humboldt Big Lagoon. Comment
  RSA46833  Solidago canadensis subsp. elongata Doris K. Kildale 1926-6-28 2180 Humboldt Big Lagoon Bluffs. Comment
  UC581769  Solidago elongata Joseph P. Tracy 1937-8-12 15654 Humboldt Snow Camp 1402 Comment
  CHSC109579  Solidago spathulata B. Castro; L. P. Janeway 2004-9-10 1474 Humboldt North Coast. South Spit of Humboldt Bay, 2.2 mi NNE of Table Bluff Lighthouse site: on other side of South Spit Road from the Humboldt Bay mudflats. 2 Comment
  SD38301  Solidago spathulata Edith A. Purer 1932-7-30 4673 Humboldt South of Orick Comment
  UC129319  Solidago spathulata Harley P. Chandler May 1901 1158 Humboldt Humboldt Bay North Coast Ranges, Humboldt Bay 3 Comment
  SD148219  Solidago spathulata var. spathulata G. K. Helmkamp, E. A. Helmkamp 2001-7-8 7023 Humboldt Samoa Peninsula, 2.6 miles south of California 255 bridge across Humboldt Bay. 14 Comment
  BLMAR663  Solidago velutina subsp. californica Jennifer Wheeler 2012-7-12 663 Humboldt King range, Strawberry rock 253 Comment
  HSC12548  Sonchus oleraceus C. Kline 1970-11-15 77 Humboldt 4.2 mi. N of Trinidad, olf Hwy. 101 Comment
  UC1222306  Sorbus californica Joseph P. Tracy 1951-6-14 19419 Humboldt Snow Camp Comment
  HSC56053  Sorbus scopulina G. L. Clifton, Griswold 1979-7-31 11655 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1719 Comment
  HSC90637  Sparaxis tricolor Gail Newton 1982-5-2 2515 Humboldt Elk River Wildlife Area, Eureka Comment
  OBI36628  Spartina densiflora David J. Keil 1983-7-2 17296 Humboldt Humboldt Bay salt marsh at Arcata Corp Yard Comment
  POM319543  Spartina densiflora Patricia Wilder 1968-8-21 4415 Humboldt Northern Coastal arm of Humboldt Bay, NW of Samoa, on E side of train tracks. 3 Comment
  HSC37941  Spergula arvensis Peter Sorensen 1976-6-4 Humboldt N Spit of Humboldt Bay, S of Samoa near airport Comment
  HSC99821  Spergularia rubra J. O. Sawyer 1980-7-18 3590 Humboldt North Trinity Mountain Research Natural Area, north of Mill Creek Lake to Red Cap Hole. Comment
  HSC37315  Spergularia rubra J. P. Smith 1976-5-27 8814 Humboldt Corner of 14th and G St. Arcata Comment
  HSC4254  Spergularia rubra D. E. Anderson 1961-9-30 1838 Humboldt Comment
  JEPS45003  Spiraea densiflora Joseph P. Tracy 1926-6-20 7630 Humboldt Horse Mountain; Northern Coast Ranges 1463 Comment
  HSC97923  Spiraea douglasii Cara Witte 2007-6-19 291 Humboldt Horse Mountain Botanical Area. Forest Service Road 6N38. Near Horse Mountain mine. 1289 Comment
  POM312888  Spiraea douglasii Malcolm A. Nobs, S. Galen Smith 1949-8-9 1226 Humboldt 1 m N of Arcata at jct of Hwys 101 and 229. Mad River Valley. Comment
  UC180171  Spiraea douglasii Joseph P. Tracy 1914-9-6 4604 Humboldt Bald Mountain Northern Coast Ranges (between High Prairie and Snow Camp, toward Snow Camp) 1219 Comment
  HSC98653  Spiranthes romanzoffiana Cara Witte 2007-7-26 594 Humboldt Board Camp Mountain. Intersection of Forest Service Road 4N38 and National Forest 1. 1395 Comment
  UC1239728  Stachys ajugoides var. rigida Joseph P. Tracy 1913-6-20 4217 Humboldt opposite Buck Mountain (Dinsmore's Ranch); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  UCLA71140  Stachys ajugoides var. rigida Joseph P. Tracy 1938-6-15 15937 Humboldt vicinity Carlotta 30 Comment
  UCLA71169  Stachys ajugoides var. rigida H. Lewis 1940-7-3 Humboldt Founders Tree Humboldt State Park Comment
  BLMAR186  Stachys bergii Donald Hazlett 1994-6-7 186 Humboldt King range, near horse Mt. Ridge rd 670 Comment
  UCLA71295  Stachys chamissonis C. Epling Aug 1933 Humboldt Clam beach Comment
  HSC49033  Stachys mexicana Patricia Shesgreen 1978-5-5 68 Humboldt 17.4 mi. S of Ferndale on Mattole Rd. 91 Comment
  HSC63637  Stachys rigida J. P. Smith 1973-5-26 6863 Humboldt Scotia Bluffs along the Eel River near Rio Dell Comment
  RSA32867  Stachys rigida subsp. quercetorum A. A. Heller 1923-7-8 s.n. Humboldt Near Pepperwood Comment
  UCR84759  Stachys rigida var. quercetorum Kathy Harper 1992-5-14 s.n. Humboldt Coast Range, Van Duzen River, c. 1.5 mi. west of Bridgeville on State Hwy 36 195 Comment
  HSC58075  Stachys rigida var. rigida G. L. Clifton, Griswold 1979-8-1 11970 Humboldt Near Mill Creek Lakes, close to the town of Hoopa 1707 Comment
  HSC58204  Stachys rigida var. rigida Walter Overton 1979-8-1 12317 Humboldt Near Mill Creek, Middle Fork, close to the town of Hoopa. 1341 Comment
  UC8638  Stellaria borealis subsp. sitchana Harley P. Chandler May 1901 1178 Humboldt Humboldt Bay; North Coast Ranges Comment
  UC1103544  Stellaria borealis subsp. sitchana Joseph P. Tracy 1935-7-27 14294 Humboldt McKay Prairie; Trinity Summit 1584 Comment
  HSC4270  Stellaria media J. L. Baker 1965-3-9 6 Humboldt 4 mi. N of Arcata on N Bank Rd. Comment
  UC1198340  Stellaria nitens Joseph P. Tracy 1933-6-13 12563 Humboldt near Hoopa Mountain summit (on road w from Hoopa to Bair's); Northern Coast Ranges, Hoopa Mountain 1066 Comment
  HSC40579  Stipa lemmonii Thomas W. Nelson, Jane P. Nelson 1976-7-1 2913 Humboldt Along NW side of Lassic Peak (Signal Peak). 1738 Comment
  SEINET5585763  Stipa occidentalis Percy Train 1937-1 515 Humboldt Canyon Creek summit, east slope Santa Rosa Range 2195 Comment
  HSC65856  Streptanthus tortuosus Gail Newton 1980-6-28 687 Humboldt Near Mad River Butte. 1536 Comment
  UC162598  Streptanthus tortuosus Harley P. Chandler June 1901 1517 Humboldt Klamath River North Coast Ranges 426 Comment
  HSC57967  Streptanthus tortuosus var. tortuosus G. L. Clifton, Terry Griswold 1979-7-31 11685 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1805 Comment
  UC1103501  Streptopus amplexifolius var. americanus Joseph P. Tracy 1935-7-25 14230 Humboldt near Corral Prairie; Trinity Summit 1584 Comment
  UC154162  Swertia albicaulis var. nitida Harley P. Chandler Jun 1901 1383 Humboldt Hupa Indian Reservation North Coast Ranges 152 Comment
  UC22723  Swertia albicaulis var. nitida J. Burtt Davy 1899-6-21 5737 Humboldt e slope Hoopa Mt. (on the borders of Supply Creek); North Coast Ranges, , Supply Creek Comment
  HSC35348  Symphoricarpos albus var. laevigatus A. M. Montalvo, J. D. Ackerman 1975-6-22 481 Humboldt 6.4 mi. W of Dinsmore along Hwy. 36 Comment
  CAS-BOT-BC269696  Symphoricarpos mollis Henry M. Pollard 1946-8-28 s.n. Humboldt Near summit of Orleans Mt. 1828 Comment
  HSC40856  Symphoricarpos mollis Thomas W. Nelson 1976-7-9 2991 Humboldt Along ridge S of E peak of Mtn. Lassic group, (Signal Pk.). 1707 Comment
  HSC58128  Symphoricarpos mollis Gilbert Muth 1979-8-1 12121 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1677 Comment
  JEPS13646  Symphoricarpos mollis Lincoln Constance 1934-6-3 808 Humboldt road from High Rock to Horse Prairie (High Rock (on Redwood Hwy, 1 mi n of Dyerville)); South Fork Eel River, Bull Creek Region Comment
  HSC100413  Symphoricarpos racemosus Carl C. Marshall Jun 1886 291 Humboldt Coyote Camp. Comment
  HSC58385  Symphyotrichum bracteolatum Terry Griswold 1979-7-25 10923 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon 1784 Comment
  HSC96486  Symphyotrichum chilense Gordon Leppig 1997-8-13 631 Humboldt Big Lagoon County Park 3 Comment
  CAS-BOT-BC98928  Symphyotrichum foliaceum var. parryi Joseph P. Tracy 1937-8-12 15634 Humboldt Snow Camp 1402 Comment
  UC198597  Symphyotrichum hendersonii Joseph P. Tracy 1917-9-1 4836 Humboldt Murphy Meadow Northern Coast Ranges, Bald Mountain 1066 Comment
  UC774604  Symphyotrichum subspicatum Carl B. Wolf 1937-9-14 9355 Humboldt 4 mi n, Redwood Highway Loleta 7 Comment
  JEPS26388  Synthyris reniformis Joseph P. Tracy 1941-4-8 16810 Humboldt Willow Creek Canyon, along Trinity Highway Willow Creek Canyon 609 Comment
  JEPS9922  Synthyris reniformis Charlotte Wilder 1922-3-2 Humboldt roadbanks near Beckwith's Mill; North Coast, Carlotta Comment
  RSA183562  Synthyris reniformis D. E. Anderson 1965-4-24 3542 Humboldt About 0.5 mile from jct 299, along Titlow Hill Road. Comment
  UC582545  Synthyris reniformis Joseph P. Tracy 1926-2-28 7380 Humboldt East Fork of Willow Creek Canyon]; Northern Coast Ranges 457 Comment
  UC902237  Synthyris reniformis Joseph P. Tracy 1941-3-26 16812 1/2 Humboldt Willow Creek Canyon, along Trinity Highway Willow Creek Canyon 457 Comment
  CDA8893  Tanacetum camphoratum K. Neander, Gordon Leppig, Sylvia Leppig 1998-5-25 789 Humboldt Big Lagoon State Park, between ocean and Big Lagoon. Comment
  CAS-BOT-BC376834  Tanacetum vulgare Doris K. Kildale 1926-7-8 2250 Humboldt Along road between Fernbridge and Fortuna Comment
  HSC100449  Taraxacum dens-leonis Carl C. Marshall Mar 1886 136 Humboldt Everywhere. Comment
  HSC6259  Taraxacum officinale S. R. Johnson 1965-3-16 13 Humboldt 1 mi. N of Luffenholtz Beach Comment
  RSA46723  Taxus brevifolia Doris K. Kildale 1937-10-28 15080 Humboldt Willits Comment
Read comments
Jan 24 2013
  CAS-BOT-BC392287  Thalictrum fendleri Doris K. Kildale 1926-4-4 1749 Humboldt Trinidad Comment
  UC162827  Thalictrum fendleri var. polycarpum Joseph P. Tracy 1906-6-24 2501 Humboldt near Fields Landing; Northern Coast Region, Region about Humboldt Bay, Humboldt H 0 Comment
  UC1239774  Thelypteris nevadensis Joseph P. Tracy 1935-7-22 14124 Humboldt near Forks of Tish Tang-a Tang Creek Trinity Summit 1219 Comment
  RSA119371  Thermopsis robusta S. Tillett 1956-7-6 620 Humboldt 11 miles from Orleans on Bar Shanty Road 1159 Comment
  HSC100462  Thlaspi alpestre Carl C. Marshall Apr 1887 360 Humboldt Supply Creek, near Hoopa. Comment
  UC1222645  Thlaspi californicum Joseph P. Tracy 1951-5-20 19405 Humboldt at serpentine rockpile toward Ashfield Butte Kneeland Prairie; , toward Ashfield Butte 762 Comment
  HSC30092  Thuja plicata Chris Gist 1973-5-14 150 Humboldt HSC Campus S of Engineering Building Comment
  RSA301968  Thuja plicata J. R. Shevock 1972-3-26 1468 Humboldt Along Hwy 299. 366 Comment
  UC183553  Thysanocarpus curvipes Joseph P. Tracy 1913-6-11 4092 Humboldt in valley of Van Duzen River opposite Buck Mountain (Dinsmore's Ranch); Northern Coast Ranges, Valley of Van Duzen River, Buck Mt. 762 Comment
  HSC20437  Tiarella trifoliata var. unifoliata D. E. Anderson 1961-9-30 1849 Humboldt Blue Lake Comment
  SBBG2855  Tiarella trifoliata var. unifoliata H. and M. Dearing 1939-5-15 3703 Humboldt E fork of Willow Crk 762 Comment
  HSC12522  Tiarella trifoliata var. unifoliata J. P. Tracy 1901-6-30 1209 Humboldt Near Eureka 0 Comment
  UC1197832  Tofieldia occidentalis subsp. occidentalis Joseph P. Tracy 1932-7-17 10672 Humboldt Trinity Summit; ridges E of Corral Prarie 1828 Comment
  HSC100655  Tolmiea menziesii Carl C. Marshall Apr 1885 46 Humboldt Damp woods near streams etc. Comment
  RSA183607  Tolmiea menziesii E W Styskel 1963-5-19 39 Humboldt 3 miles S.E. of Korbel, on Snow Camp Road. 305 Comment
  HSC64158  Torilis arvensis J. O. Sawyer, K. A. Sawyer 1979-6-24 3404 Humboldt Slopes alongside Aikens Creek. 366 Comment
  HSC75412  Torilis arvensis J. O. Sawyer, M. A. Ericksen 1980-7-7 3574 Humboldt Slopes along Aikens Creek, Adroni Research Area 457 Comment
  UCR3543  Torilis arvensis David Whistler, H. M. Whistler 1964-7-29 640729- 3 Humboldt North Coast Range, US 101, [South Fork Eel River] across the street from Myers Flat Store 63 Comment
  UCD93214  Torreyochloa pallida var. pauciflora A. H. Murphy 1951-8-17 88 Humboldt South Fork Mtn., ca. 15 miles N.E. of Bridgeville-Trinity County line. Comment
  HSC3137  Toxicodendron diversilobum Francis Winter 1960-4-24 Humboldt 1 mi. N of Redwood Creek Ranch. 396 Comment
  JEPS63915  Toxicodendron diversilobum W. L. Jepson 1932-7-27 16429 Humboldt on rd. to Bull Creek Dyerville Comment
  JEPS63933  Toxicodendron diversilobum W. L. Jepson 1902-7-10 2003 Humboldt S. Fork Trinity R., Martin's Ranch Comment
  JEPS4746  Tracyina rostrata Joseph P. Tracy 1930-6-15 8762 Humboldt Dobbyn Creek 152 Comment
  CAS-BOT-BC399990  Trautvetteria caroliniensis Joseph P. Tracy 1937-7-2 15387 Humboldt Happy Camp Mountain. (In Trinity Summit Range, northeast of Hawkins Bar.) 1280 Comment
  UC1225747  Trautvetteria caroliniensis var. occidentalis Joseph P. Tracy 1948-9-5 18169 Humboldt Trinity Summit Range, at Happy Camp Mountain Happy Camp Mountain; Trinity Summit Range, Happy Camp Mountain 1280 Comment
  BLMAR387  Triantha occidentalis Jennifer Anthony-Wheeler 2004-7-1 387 Humboldt Horse Mtn, mixed conifer in serp.seep Comment
  HSC58100  Triantha occidentalis subsp. occidentalis G. L. Clifton, Griswold 1979-8-1 12030 Humboldt Near N Trinity Mtn., close to the town of Hoopa 1799 Comment
  POM162077  Trichostema oblongum Joseph P. Tracy 1921-8-21 5936 Humboldt Trinity River Valley, near Willow Creek. 152 Comment
  UC1197240  Trifolium albopurpureum var. dichotomum Joseph P. Tracy 1915-6-27 4659 Humboldt near Carlotta (Yager Creek); Northern Coast Ranges 60 Comment
  UC33444  Trifolium barbigerum W. C. Blasdale 1896-5-31 Humboldt Eureka Comment
  UC179920  Trifolium campestre Joseph P. Tracy 1914-7-4 4523 Humboldt Between Korbel and Angels Ranch Northern Coast Ranges 457 Comment
  UC1223476  Trifolium depauperatum var. depauperatum Joseph P. Tracy 1941-4-26 16864 Humboldt Kneeland Prairie 762 Comment
  UC249727  Trifolium depauperatum var. depauperatum Joseph P. Tracy 1921-5-30 5480 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  JEPS79999  Trifolium eriocephalum var. eriocephalum Joseph P. Tracy 1930-6-29 8821 Humboldt nw slope Buck Mtn (lower foothills); Northern Coast Ranges Comment
  UC162814  Trifolium eriocephalum var. eriocephalum Joseph P. Tracy 1908-6 2759 Humboldt opposite Buck Mtn; Valley of Van Duzen River 762 Comment
  UC249719  Trifolium eriocephalum var. eriocephalum Joseph P. Tracy 1921-6-19 5834 Humboldt Berry's Mtn 914 Comment
  UC1197022  Trifolium fucatum Joseph P. Tracy 1906-6-10 2470 Humboldt nw slope Wragletown (lower foot); Northern Coast Ranges 152 Comment
  UC303192  Trifolium fucatum Joseph P. Tracy 1923-5-13 6203 Humboldt Bridgeville Northern Coast Ranges 228 Comment
  SEINET12147901  Trifolium fucatum var. virescens J. P. Tracy 1950-1 18747 Humboldt Cape Ridge, 1 mi E of Cape Mendocino 152 Comment
  CDA4343  Trifolium glomeratum E. C. Whitney 1977-6-23 Humboldt Loop Road, Fortuna. 0 Comment
  UC1197195  Trifolium gracilentum J. P. Tracy 1899-6-2 106 Humboldt near Bucksport (immediate vicinity of Eureka) 0 Comment
  UC175675  Trifolium longipes subsp. hansenii Joseph P. Tracy 1913-6-17 4157 Humboldt Northern Coast Ranges. Buck Mountain, near summit. Comment
  HSC40537  Trifolium longipes subsp. oreganum Thomas W. Nelson, Jane P. Nelson 1976-5-23 2527 Humboldt In the Canyon of Bear Creek, W of Black Lassic 1524 Comment
  UC302112  Trifolium longipes var. oreganum Joseph P. Tracy 1926-6-20 7608 Humboldt Horse Mtn North Coast Ranges Comment
  UC1197233  Trifolium macraei Joseph P. Tracy 1923-5-19 6209 Humboldt near Trinidad; Northern Coast Ranges 15 Comment
  HSC39714  Trifolium microcephalum D. E. Anderson, J. P. Smith 1971-6-28 - 1264 Humboldt 2.5 mi. S of Blue Lake along the Mad River Comment
  CDA28005  Trifolium microdon E. C. Whitney 1978-5-25 Humboldt Art Tooby property, Harris. 0 Comment
  UC1197486  Trifolium obtusiflorum Joseph P. Tracy 1927-5-30 8092 Humboldt Garberville vicinity Northern Coast Ranges 121 Comment
  UC249721  Trifolium oliganthum Joseph P. Tracy 1921-4-24 5438 Humboldt facing South Fork of Eel River (Phillipsville); Northern Coast Ranges 121 Comment
  HSC28188  Trifolium pratense Richard Curtis 1973-9-27 21 Humboldt Bayside cutoff between Eureka and Arcata. Comment
  HSC38329  Trifolium repens Peter Sorensen 1976-5-29 Humboldt King Salmon Comment
  UC1197046  Trifolium repens J. P. Tracy 1901-5-8 1073 Humboldt immediate vicinity of Eureka 0 Comment
  UC162779  Trifolium repens J. P. Tracy 1903-8-9 1946 Humboldt immediate vicinity Eureka 0 Comment
  SEINET12156857  Trifolium variegatum L. K. Henry 1971-1 s.n. Humboldt along Rt 36, 2 mi E of Dinsmor in Six Rivers Nat'l Forest Comment
  UC1197553  Trifolium variegatum var. melananthum Joseph P. Tracy 1930-5-18 8695 Humboldt Roseville golf course Northern Coast Ranges 152 Comment
  UC1223535  Trifolium variegatum var. melananthum Joseph P. Tracy 1936-6-9 14890 Humboldt 1 mi e Cape Mendocino (Cape Ridge, back of cape) 243 Comment
  HSC15180  Trifolium willdenovii Eugene Andreuccetti 1964-5-2 46 Humboldt Grounds of Tish-Tang Ranger Station Comment
  UCD109861  Trifolium willdenovii A. H. Murphy 1947-5-15 s.n. Humboldt In Klamath weed field, 3 miles south of Blocksburg. Comment
  HSC33757  Trifolium wormskioldii Ron Ralston 1975-5-24 79 Humboldt Samoa Dunes off Samoa Blvd., across from boat landing Comment
  JEPS37725  Trifolium wormskioldii Joseph P. Tracy 1917-5-30 4801 Humboldt Northern Coast Ranges, Little River Beach Little River Beach; Northern Coast Ranges, Little River Beach 6 Comment
  HSC90318  Triglochin concinna Jean Hanson 1981-5-10 138 Humboldt Indian Island, Humboldt Bay, city of Eureka, W end of island Comment
  HSC62989  Triglochin maritima David Wheeler 1979-4-22 79 Humboldt Mad River Slough, 1 mi. W of the intersection of Mad River Rd. and Iverson Rd. Comment
  HSC103300  Trillium albidum Michael G. Simpson, Michael Mesler, Michael Mayer 2008-5-27 3006 Humboldt Six Rivers National Forest; ~ 0.2 mi. south-southeast of Cold Spring Camp; ~ 3.3 aerial mi. south-southeast of Horse Mtn. Radio Tower. 1416 Comment
  HSC101813  Trillium albidum Kjirsten A. Wayman 2012-5-4 316 Humboldt Bald Hills Road, 16.6 mi. from Hwy 101, N 41.15213 deg. W 123.88952 deg. 768 Comment
  CAS-BOT-BC519092  Trillium chloropetalum var. chloropetalum D. H. Norris 1970-5-20 12216 Humboldt At crest of ridge on Big Hill Road east of Hoopa, at streamhead. Comment
  HSC96776  Trillium kurabayashii M. Mesler 2006-5-25 603 Humboldt Bald Hills FS, 18.8 mi. SE of Hwy. 101 915 Comment
  CAS-BOT-BC133397  Trillium ovatum Myrtle Paulson 1918-4-28 s.n. Humboldt Eureka Comment
  HSC12429  Trillium ovatum Gary J. Stebbins 1970-4-5 56 Humboldt Along rd. to Camp Bauer 1.1 mi. from Korbel Comment
  UC1197817  Trillium ovatum Joseph P. Tracy 1932-7-16 10632 Humboldt woods near Corral Prairie Corral Prairie; Trinity Summit 1584 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
  CAS-BOT-BC133393  Trillium ovatum Doris K. Kildale 1927-3-20 2929 Humboldt Philipsville, south fork of Eel River Comment
  HSC15702  Trillium ovatum K. P. St. John 1965-4-24 42 Humboldt Dry Lagoon State Park, 13 mi. N of Trinidad Comment
  HSC45264  Trillium ovatum M. Alcasas 1978-4-7 1 Humboldt Freshwater Rd. 0.5 mi. N of Kneeland Post Office 732 Comment
  SEINET10275389  Trillium ovatum Unknown 1963-2-24 52 Humboldt altitude ca 250 ft, floor of Redwood Forest; Nelson Grove near bank of Eel River, Humboldt State Park Comment
  UCD18653  Trillium ovatum Roman Gankin 1956-3-17 105 Humboldt off US Hwy 101. Comment
  HSC97558  Trillium ovatum subsp. ovatum Cara Witte 2007-6-1 178 Humboldt Along Forest Service 5N10. 1.75 miles east of intersection with National Forest 1. 1365 Comment
  UC169335  Triodanis perfoliata Joseph P. Tracy July, 1908 2912 Humboldt near Low Gap (ridge between Van Duzen and Mad Rivers, Humboldt and Trinity Counties); Northern Coast Ranges, ridge btw Van Duzen and Mad Rivers 914 Comment
  SBBG68597  Triphysaria eriantha subsp. eriantha S. W. Hutchinson -Apr-1927 Humboldt Eureka 8 Comment
  UC168980  Triphysaria eriantha subsp. eriantha Harley P. Chandler May, 1901 1249 Humboldt Bair's Ranch on Redwood Creek 152 Comment
  BLMAR604  Triphysaria pusilla Jennifer Wheeler 2011-4-1 604 Humboldt King range, growing on Mattole beach dunes Comment
  HSC40372  Triphysaria pusilla Linda M. Barker 1976-4-30 1425 Humboldt 3 mi. W of Arcata Comment
  POM118380  Trisetum canescens Marcus E. Jones 1924-4-26 s.n. Humboldt Scotia Comment
  RSA10052  Trisetum canescens Joseph P. Tracy 1926-5-22 7502 Humboldt Northern Coast Ranges, Prairie Creek. 152 Comment
  UC526695  Trisetum canescens Joseph P. Tracy 1927-6-19 8194 Humboldt Big Lagoon; Northern Coast Region 6 Comment
  UCD93893  Trisetum canescens Joseph P. Tracy 1901-6-23 1167 Humboldt Immediate vicinity of Eureka. 0 Comment
  SEINET10605778  Trisetum canescens Joseph P. Tracy 1901-5-30 Tracy 1109 Humboldt At Eureka. Comment
  CAS-BOT-BC193516  Trisetum cernuum Joseph P. Tracy 1935-5-24 13814 Humboldt Eureka 60 Comment
  HSC38429  Trisetum cernuum D. E. Anderson, J. P. Smith 1971-6-18 - 1056 Humboldt 1 mi. W of Lord Ellis Summit Comment
  UC15030  Triteleia bridgesii Mrs. M. H. Manning 1901-5-22 1 Humboldt Hupa Valley Comment
  HSC98957  Triteleia hyacinthina Cara Witte 2008-7-28 952 Humboldt Spike Buck Mountain. Forest Service Road 5N18. 1/2 mile from intersection with National Forest 1. 1565 Comment
  UC1222691  Triteleia hyacinthina Joseph P. Tracy 1950-6-25 18896 Humboldt in meadow near Sproston Place (on the road to the Albee Place, 3 mi s Burr Valley); w side Buck Mountain 1158 Comment
  UC15025  Triteleia hyacinthina J. P. Tracy 1901-6-23 1160 Humboldt wet ground near Ryan's Slough Hill; immediate vicinity of Eureka 0 Comment
  HSC3059  Triteleia laxa Lincoln Constance 1934-5-29 710 Humboldt Upper Look Prairie; South Fork Eel River 366 Comment
  JEPS58049  Triteleia laxa Lincoln Constance 1934-5-29 710 Humboldt Upper Look Prairie South Fork Eel River, Bull Creek Region 365 Comment
  UC175816  Triteleia laxa Joseph P. Tracy 1913-6-19 4210 Humboldt opposite Buck Mountain; Northern Coast Ranges, valley of Van Duzen River, Dinsmore's 762 Comment
  IRVC27661  Triteleia peduncularis J. P. Tracy 1898-7-5 266 Humboldt Immediate vicinity of Eureka; near Ryan's Slough Hill. 0 Comment
  HSC13439  Triticum aestivum L. M. Malloy 1965-5-20 30 Humboldt Old county dump, 5 mi. from Arcata on Fickle Hill Rd. Comment
  UCD135133  Tsuga heterophylla Linda M. Barker 1976-6-14 1589 Humboldt Lanphere-Christensen Dunes, coastal forest and dunes 3 miles west of Arcata. Comment
  JEPS46766  Tsuga mertensiana W. L. Jepson 1903-6-1 Humboldt 12 mi from Ft. Bragg (Noyo River); Noyo River Comment
  UCR275103  Typha domingensis Charity A. Hartshorn 2016-4-24 20 Humboldt Arcata Marsh & Wildlife Sanctuary, east end of Klopp Lake 7 Comment
  HSC97590  Umbellularia californica Steven Lee 2004-4-26 32 Humboldt Horse Mtn., 4 mi. up Titlow Hill Rd. from Hwy. 299 Comment
  UC302987  Urtica dioica subsp. gracilis Joseph P. Tracy 1926-5-25 7516 Humboldt around Humboldt Bay (Northern Coast Region, Elk River Valley); Northern Coast Region, Elk River Valley 30 Comment
  UC672856  Urtica dioica subsp. holosericea Joseph P. Tracy 1937-7-19 15448 Humboldt Blue Slide on Van Duzen River Blue Slide; Van Duzen River, Blue Slide 91 Comment
  UC32652  Vaccinium cespitosum E. Ethel Tracy 1901-9-5 1279 Humboldt Eureka Comment
  UC22197  Vaccinium membranaceum J. Burtt Davy 1899-6-21 5759 Humboldt Trinity Summit North Coast Ranges 1524 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
  CAS-BOT-BC199323  Vaccinium ovatum Carl B. Wolf 1930-10-24 1761 Humboldt Along the Klamath River 2 miles below mouth of Salmon River 152 Comment
  HSC7904  Vaccinium ovatum R. A. Rasp 1964-5-20 43 Humboldt 4 mi. W of Arcata off Lanphere Rd. on Lanphere Ranch Comment
  OBI23023  Vaccinium ovatum Robert J. Rodin 1961-8-11 6807 a Humboldt Near Pepperwood Comment
  UC154184  Vaccinium ovatum P. E. Goddard 1901-6 20 Humboldt Hupa Comment
  UC902049  Vaccinium ovatum Joseph P. Tracy 1949-6-20 18323 Humboldt near Boynton Prairie 609 Comment
  UCD166925  Vaccinium ovatum Colleen Rossier 2016-9-17 9 Humboldt In vicinity of Sunny Ridge Stump. Plot Sunny Ridge Old Stump. 579 Comment
  CAS-BOT-BC199424  Vaccinium parvifolium Doris K. Kildale 1927-3-14 1533 Humboldt Southern approach to Blue Slide on old Bridgeville road. Van Duzen River Comment
  HSC91894  Vaccinium parvifolium E. Mackey 1986-10-24 Humboldt Patricks Point State Park Comment
  OBI14438  Vaccinium parvifolium Joseph P. Tracy 1943-3-14 17410 Humboldt Vicinity of Carlotta Comment
  UC1197764  Vaccinium parvifolium Joseph P. Tracy 1933-7-11 12672 Humboldt Horse Mountain 1432 Comment
  HSC55023  Vaccinium uliginosum Overton, Butler 1979-7-31 11435 Humboldt Near Water Dog Lakes, close to the town of Hoopa 1830 Comment
  HSC48152  Valeriana sitchensis subsp. sitchensis Brad Klipfel 1975-5-30 656 Humboldt N of Horse Mtn. Comment
  HSC96678  Vancouveria hexandra Kristina Folland 2001-5-6 22 Humboldt Top of Fickle Hill Rd. Comment
  CAS-BOT-BC76093  Vancouveria planipetala M. S. Jussel 1931-5-2 113 Humboldt Garberville. Comment
  RSA505336  Vancouveria planipetala Barbara Ertter, Thomas J. Delendick 1987-5-16 6941 Humboldt 3 miles E of Berry Summit on Hwy 299, 20 airmiles E of Arcata, near large volcanic rock on S side of road above Willow Creek 800 Comment
  UC153947  Veratrum californicum var. californicum Joseph P. Tracy 1910-7-24 3158 Humboldt marshy places at foot of hill 1 1/2 mi s Field's Landing; Northern Coast Region, region about Humboldt Bay 0 Comment
  CAS-BOT-BC135775  Veratrum insolitum Carl B. Wolf 1934-7-3 5920 Humboldt 19 1/2 mi. from Martin's Ferry on Orick Rd. 304 Comment
  JEPS11195  Verbascum thapsus W. L. Jepson 1936-8-12 17873 Humboldt South Fork Eel River Phillipsville; South Fork Eel River Comment
  HSC39719  Verbena lasiostachys D. E. Anderson, J. P. Smith 1971-6-28 - 1258 Humboldt 2.5 mi. S of Blue Lake along the Mad River Comment
  HSC100685  Veronica americana Carl C. Marshall May 1885 118 Humboldt Along brooks, ditches etc. Comment
  UC501613  Veronica scutellata Frank W. Peirson 1923-7-11 3838 Humboldt 7 mi n of Arcata Comment
  UC147901  Veronica serpyllifolia subsp. humifusa Joseph P. Tracy 1910-4-17 3115 Humboldt Valley of Elk River (region about Humboldt Bay); Northern Coast Region, Humboldt Bay, Elk River 0 Comment
  RSA249386  Veronica serpyllifolia var. humifusa D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5584 Humboldt Mount Lassic and 2 smaller peaks to immediate east. 1768 Comment
  HSC15258  Vicia americana var. americana J. P. Tracy 1935-5-26 13908 Humboldt Iaqua 610 Comment
  UC709402  Vicia americana var. americana Joseph P. Tracy 1939-4-29 16253 Humboldt Orleans 121 Comment
  UC303185  Vicia benghalensis Joseph P. Tracy 1924-6-28 6701 Humboldt Hydesville; Northern Coast Ranges 91 Comment
  UCD108778  Vicia benghalensis Rimo Bacigalupi; L. Heckard, J. Weiler 1961-6-23 7838 Humboldt About 1 mile west of Carlotta (or about 1/2 mile east of Hydesville). Comment
  JEPS66180  Vicia gigantea W. L. Jepson 1902-8-4 13640 Humboldt near Petrolia; Humboldt Coast Comment
  HSC15262  Vicia hirsuta W. F. Nickel 1965-4-22 Humboldt N Arcata on E side of Hwy. Comment
  RSA91239  Vicia hirsuta F. W. Peirson 1923-7-11 3630 Humboldt Flats north of Eureka Comment
  UC162799  Vicia sativa subsp. nigra J. P. Tracy 1901-6-30 1202 Humboldt immediate vicinity Eureka 0 Comment
  HSC15255  Vicia sativa subsp. nigra W. F. Nickel 1965-4-28 Humboldt On S side of Biological Science Building, near baseball field Comment
  JEPS66198  Vicia tetrasperma Milo S. Baker 1923-7-23 92 Humboldt near Carlotta (Manning Creek); Manning Creek Comment
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Feb 15 2013
  HSC3225  Vinca major D. K. Smith 1968-2-2 4 Humboldt On the bank of Crannell Rd. past the bridge Comment
  HSC21775  Viola adunca Richard Spjut 1968-10-26 205 Humboldt Near boat launching area at Big Lagoon Comment
  HSC21778  Viola cuneata Frances Oldridge 1946-1 Humboldt Willow Creek Comment
  HSC44358  Viola glabella Brad Klipfel 1974-5-27 398 Humboldt Horse Mtn. Comment
  JEPS80006  Viola glabella Joseph P. Tracy 1932-7-17 10682 Humboldt head of Brett Hole (Klamath Mountains, Trinity Summit); Klamath Mountains, Trinity Summit 1828 Comment
  UC19284  Viola glabella Harley P. Chandler June, 1901 1285 Humboldt Hupa Indian Reservation; North Coast Ranges 1097 Comment
  UC902116  Viola glabella Joseph P. Tracy 1942-6-23 17242 Humboldt near Box Camp; Trinity Summit 1524 Comment
  JEPS50250  Viola macloskeyi Hilda W. Grinnell 1932-7-19 30 Humboldt McKay Camp; South Fork Mountain, McKay Camp 1676 Comment
  UC1198431  Viola ocellata Joseph P. Tracy 1948-5-31 18007 Humboldt Harris 762 Comment
  SEINET201005 Image available Viola palustris J. P. Tracy 1904-7-31 2126 Humboldt Eureka 61 Comment
  RSA21088  Viola praemorsa subsp. linguifolia Carl B. Wolf 1937-6-14 8816 Humboldt Kneeland Prairie; North Coast Range. 823 Comment
  HSC99094  Viola praemorsa subsp. praemorsa C. Witte 2007-5-8 7 Humboldt Cold Spring. 1/2 mile south of Titlow Hill. 1397 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
  CHSC2036  Viola sempervirens E. Crouch 1929-5-9 Humboldt Redwoods. Comment
  HSC21856  Viola sempervirens H. E. Parks, S. T. Parks Apr 1944 24268 Humboldt Spruce Cove, Trinidad 61 Comment
  HSC47655  Viola sempervirens Sheila Logan 1978-4-10 183 Humboldt Arcata Community Forest, near PSW Experimental Lab Comment
  UC1198435  Viola sempervirens Joseph P. Tracy 1933-6-13 12588 Humboldt near summit of Hoopa Mountain ( on road from Hoopa westward to Bair's) 1066 Comment
  UC668146  Vitis californica Joseph P. Tracy 1933-9-9 13077 Humboldt Garberville South Fork of Eel River 152 Comment
  UCD16884  Vitis californica H. Olmo 1934-9-30 s.n. Humboldt California. Humboldt County: on highway near Blue Lake. Comment
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Jun 14 2012
  HSC79420  Vulpia bromoides Kenneth Clark 1980-4-18 584 Humboldt On western bluffs above Dead Man's Gulch. 137 Comment
  POM183574  Vulpia bromoides R. I. Bonn 1965-5-7 21 Humboldt Four miles west of Arcata on Lamphere Rd. Comment
  UC1103724  Vulpia bromoides J. P. Tracy 1899-4-30 308 Humboldt immediate vicinity Eureka 0 Comment
  HSC9908  Vulpia microstachys J. P. Tracy 1926-5-2 7440 Humboldt Trinity River Valley, near the south fork. 183 Comment
  HSC9914  Vulpia microstachys C. S. Chavez 1965-5-1 64 Humboldt On Hwy. 299 2 mi. E of Willow Creek. Comment
  RSA121356  Vulpia microstachys var. pauciflora H. L. Person 1932-5-11 s.n. Humboldt Near Arcata 0 Comment
  SEINET200354  Vulpia microstachys var. pauciflora J. P. Tracy 1919-5-31 5161 Humboldt W side Trinity River; near Willow Creek 153 Comment
  UC525649  Vulpia microstachys var. pauciflora Joseph P. Tracy 1933-6-13 12599 Humboldt near summit on road from Hoopa to Bair's; Hoopa Mountain 1066 Comment
  UC525673  Vulpia microstachys var. pauciflora Joseph P. Tracy 1932-5-22 10116 Humboldt between Miranda and Redway; North Coast Ranges, South Fork of Eel River 91 Comment
  HSC9937  Vulpia myuros J. W. Johnson 1962-4-8 1230 Humboldt Arcata, Mad River Co. Park Comment
  HSC9939  Vulpia myuros R. H. Berg 1963-4-18 54 Humboldt Arcata Bottoms, Arcata. Comment
  UC1103718  Vulpia myuros var. hirsuta Joseph P. Tracy 1914-5-14 4432 1/2 Humboldt Fort Seward 106 Comment
  SBBG2858  Whipplea modesta H. and M. Dearing 1933-5-16 1242 Humboldt near Weott Comment
  SDSU911  Whipplea modesta D. F. Howe 1961-8-2 3121 Humboldt 7.7 Miles east of Orick on Bald Mtn. Road. 610 Comment
  HSC35285  Woodwardia fimbriata Lon Hall 1975-3-27 296 Humboldt Near Shelter Cove at edge of Bear Creek 366 Comment
  JEPS60113  Woodwardia fimbriata W. L. Jepson 1936-8-15 17903 Humboldt Grizzly Creek, Van Duzen River Grizzly Creek; Van Duzen River Comment
  CAS-BOT-BC382920  Wyethia angustifolia Doris K. Kildale 1928-6-24 5271 Humboldt Horse Mountain 853 Comment
  CAS-BOT-BC382926  Wyethia angustifolia Frank W. Gould 1939-5-29 841 Humboldt Horse Mountain 914 Comment
  UC668191  Xanthium spinosum Joseph P. Tracy 1938-10-30 16174 Humboldt Holmes Flat 60 Comment
  JEPS37537  Xanthium strumarium Lincoln Constance 1934-6-12 865 Humboldt n bank South Fork Eel River (Dyerville, Bull Creek Road, Bull Creek Region); n bank South Fork Eel River, Bull Creek Region, Dyerville Comment
  HSC39230  Xerophyllum tenax D. E. Anderson, J. P. Smith 1971-7-6 - 1282 Humboldt Horse Mtn. Comment
  RSA246843  Xerophyllum tenax Robert F. Thorne, Percy C. Everett 1965-8-5 35144 Humboldt King Mountain 1220 Comment
  UC1134688  Xerophyllum tenax A. E. Wieslander 1931-5-19 208 Humboldt near Orleans (Klamath National Forest); Klamath National Forest Comment
  CAS-BOT-BC527072  Xerophyllum tenax B. H. Mace; Frank Graham 1922-10-1 38737 Humboldt Brannan Mt., Trinity Forest Comment



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