Search Results — 2000 specimen records retrieved (1316 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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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  HSC55021  Abies concolor Overton, Butler 1979-7-31 11430 Humboldt Near Water Dog Lakes, close to the town of Hoopa 1830 Comment
  CDA19040  Abies grandis George Loughner 2000-10-6 PDR 023915 Humboldt North Coast Ranges; Ridge E of Blue Lake. 0 Comment
  HSC13030  Abies grandis D. Santana, C. Kline Oct 1970 3 Humboldt HSC Campus Comment
  UC502904  Abies grandis Joseph P. Tracy 1932-3-20 9781 Humboldt Trinidad Northern Coast Region, Trinidad 60 Comment
  HSC23109  Abronia latifolia Norman Dennis 1965-6-8 106 Humboldt Samoa Peninsula along the W side of Humboldt Bay Comment
  HSC37927  Abronia latifolia Peter Sorensen 1976-5-28 Humboldt N spit Comment
  RSA15561  Abronia latifolia Carl B. Wolf 1927-8-29 1211 Humboldt Devils Gate, S of Cape Mendocino Comment
  UC665677  Abronia umbellata subsp. breviflora H. E. Parks 1941-9-1 24212 Humboldt mouth of Little River Comment
  HSC41124  Abronia umbellata var. breviflora Thomas W. Nelson, Jane P. Nelson, James Nelson 1976-9-26 3265 Humboldt Along beach S of Fern Canyon. Comment
  CAS-BOT-BC330540  Acer circinatum Doris K. Kildale 1925-6-28 836 Humboldt Lawrence Creek near bridge on Kneeland--Iaqua road 609 Comment
  CAS-BOT-BC330550  Acer circinatum L. R. Abrams; R. Bacigalupi 1922-6-25 8298 Humboldt Prairie Creek, 4 mi N of Orick Comment
  RSA386075  Acer circinatum H. E. McMinn 1931-6-28 2549 Humboldt Orick to Requa Comment
  UC249585  Acer circinatum Joseph P. Tracy 1922-5-29 6061 Humboldt South Yager Creek Northern Coast Ranges, South Yager Creek 762 Comment
  UC902127  Acer circinatum Joseph P. Tracy 1932-6-26 17294 Humboldt Valley of South Yager Creek 609 Comment
  HSC2812  Acer macrophyllum R. E. Thill 1965-5-1 27 Humboldt 0.25 mi. from Korbel on the Camp Bauer Rd. Comment
  CAS-BOT-BC331592  Acer macrophyllum G. A. Coleman 1901-7-16 s.n. Humboldt Near Barberville Comment
  HSC4546  Achillea millefolium J. W. Johnson 1961-8-17 1061 Humboldt Arcata, W.M. Lanphere Farm, Samoa Peninsula. Comment
  UCSB30612  Achillea millefolium Edwards, David 1974-7-26 Humboldt At the top of the E. bank of the Mad River, at its junction with Puter Creek, ca. 2 mi. SW. of Korbel 27 Comment
  UCD128333  Achillea millefolium H. E. Parks; S. T. Parks 1943-8-1 24246 Humboldt Egg Point, Trinidad. 121 Comment
  RSA26852  Achillea millefolium var. californica I. L. Wiggins 1940-7-10 s.n. Humboldt Big Lagoon. Comment
  HSC99382  Achlys triphylla subsp. triphylla K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-6-28 31 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  CAS-BOT-BC210657  Achnatherum lemmonii Joseph P. Tracy 1933-7-25 12849 Humboldt Grouse Mountain 1524 Comment
  UC1145040  Achnatherum lemmonii Joseph P. Tracy 1950-6-15 18787 Humboldt 7 mi n Harris (Mail Ridge); Mail Ridge 1036 Comment
  UC526755  Achnatherum lemmonii Joseph P. Tracy 1930-7-23 9125 Humboldt Horse Mountain Northern Coast Ranges, Horse Mountain 1524 Comment
  SEINET11682291  Achnatherum lemmonii J. P. Tracy 1951-1 19563 Humboldt halfway between Snow Camp & Twin Lakes (at Preston's old gate near road) Comment
  UC1222925  Achyrachaena mollis Joseph P. Tracy 1948-6-13 18054 Humboldt nearby grassy slopes Harris Comment
  SEINET2429225  Achyrachaena mollis Joseph P. Tracy 1932-6-26 10271 Humboldt Fort Baker Ranch 760 Comment
  UCD103770  Acmispon americanus var. americanus Linda M. Barker 1976-6-1 1548 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  HSC90752  Acmispon micranthus Gail Newton 1982-5-5 2537 Humboldt Elk River Wildlife Area, Eureka. Comment
  HSC36791  Acmispon nevadensis Thomas W. Nelson, Jane P. Nelson, James Nelson 1975-7-20 2050 Humboldt Beside FS Rd. 2S08 to Pine Mtn. Comment
  CAS-BOT-BC391410  Aconitum columbianum subsp. columbianum Joseph P. Tracy 1932-7-10 10393 Humboldt Klamath Mountains, Trinity Summit. Meadow at Corral Prairie 1524 Comment
  HSC56001  Aconitum columbianum subsp. viviparum Overton, Butler 1979-7-31 11449 Humboldt Near Water Dog Lakes, close to the town of Hoopa 1830 Comment
  HSC56144  Aconitum columbianum subsp. viviparum G. L. Clifton, Griswold 1979-8-1 11973 Humboldt Near Mill Creek Lakes, close to the town of Hoopa 1707 Comment
  HSC53838  Aconogonon phytolaccifolium Griswold, Butler 1979-7-10 6289 Humboldt Near Board Camp Mtn., close to the town of Willow Creek 1372 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
  JEPS79802  Actaea rubra Joseph P. Tracy 1932-7-17 10690 Humboldt Devil's Hole Klamath Mts., Trinity Summit (head) 1828 Comment
  HSC4593  Adenocaulon bicolor Lincoln Constance 1934-5-29 734 Humboldt Upper Look Prairie; South Fork Eel River 366 Comment
  HSC54594  Adiantum aleuticum Overton, Butler 1979-7-24 9665 Humboldt Near Friday Camp, close to the town of Willow Creek. 1250 Comment
  UC62718  Adiantum aleuticum W. C. Blasdale 1896-6-1 Humboldt Freshwater Comment
  UCD137191  Adiantum jordanii Lincoln Constance 1934-6-4 823 Humboldt Bull Creek Region, South Fork Eel River. Comment
  SEINET3868471 Image available Adiantum pedatum var. aleuticum Dan O'Brien 1962-5-19 s.n. Humboldt 2 1/2 mi e. of Bayside on Jacoby Creek.; 0 Comment
  HSC53932  Agastache urticifolia Griswold, Butler 1979-7-11 6950 Humboldt Near Snow Camp Mtn., close to the town of Willow Creek. 1320 Comment
  HSC54499  Agastache urticifolia G. L. Clifton, Griswold 1979-7-26 9358 Humboldt Near Salmon Mtn., close to the town of Forks of Salmon 1935 Comment
  HSC76197  Agastache urticifolia Overton, Butler 1979-8-2 12510 Humboldt Near Bret Hole, close to the town of Hoopa 1554 Comment
  HSC34286  Agastache urticifolia K. Irwin 1975-8-16 Humboldt Grogans Hole area. Comment
  HSC59857  Ageratina occidentalis M. A. Baker 1979-7-7 1016 Humboldt 9.5 km E of Berry Summit along Hwy. 299, N bank of Willow Creek Comment
  RSA167313  Agoseris aurantiaca Joseph P. Tracy 1949-8-7 18441 Humboldt Trinity Summit, meadow at Box Camp 1463 Comment
  SEINET202623 Image available Agoseris grandiflora Joseph P. Tracy 1942-7-18 17275 Humboldt Garberville north end of town. Comment
  UC166072  Agoseris grandiflora var. grandiflora Joseph P. Tracy 1911-7-12 3528 Humboldt near, in fields Blue Lake; Northern Coast Ranges 60 Comment
  UC1196558  Agoseris grandiflora var. leptophylla Joseph P. Tracy 1935-7-14 14078 Humboldt top of ridge Grouse Mountain; North Coast Ranges 1524 Comment
  UCD128614  Agoseris heterophylla James P. Smith 1973-5-5 6479 Humboldt Along Cook and Green Pass Road. Comment
  SEINET6998445  Agoseris heterophylla Wanda P. Vestal, A. G. Vestal 1937-6-23 s.n. Humboldt Saddle near west end of Bald Hills, southeast of Orick. Comment
  UC165756  Agoseris heterophylla var. heterophylla J. P. Tracy 1903-5-22 1875 A Humboldt on grassy hills Alder Point 152 Comment
  UC249886  Agoseris hirsuta Joseph P. Tracy 1923-6-18 6283 Humboldt Bear River Ridge Northern Coast Ranges, Bear River Ridge 304 Comment
  UC450000  Agoseris hirsuta Joseph P. Tracy 1923-6-18 6280 Humboldt Bear River Ridge; Northern Coast Ranges 304 Comment
  HSC32098  Agoseris retrorsa D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-17 5703 Humboldt McKeown Ranch, N of Dinsmore Comment
  CAS-BOT-BC127279  Agrostis exarata Joseph P. Tracy 1927-6-19 8193 Humboldt Northern Coast Region. Big Lagoon. 6 Comment
  CAS-BOT-BC127291  Agrostis exarata Palmer Stockwell 1934-7-13 64 Humboldt Clam Beach. Comment
  SEINET4558396  Agrostis exarata J. P. Tracy 1902-1 1757 Humboldt Immediate vicinity of Eureka 152 Comment
  UC1103377  Agrostis exarata Joseph P. Tracy 1908-6 2803 Humboldt opposite Buck Mountain; Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  SEINET10789958  Agrostis exarata Joseph P. Tracy 1900-9-2 Tracy 933 Humboldt Immediate vicinity of Eureka. Bed of frog pond. 0 Comment
  HSC68942  Agrostis hallii Jacqueline Greenleaf 1980-8-5 289 Humboldt Near Dairy Creek. 1158 Comment
  UC526882  Agrostis hallii Joseph P. Tracy 1930-6-29 8812 Humboldt nw slope Buck Mountain; Northern Coast Ranges 762 Comment
  CHSC114091  Agrostis idahoensis Jennifer Buck; Danielle Roach 2009-8-19 SFM 06 C Humboldt Kerlin Fen, South Fork Mountain; UTM Zone 10N, 453899E, 4494304N. 1633 Comment
  HSC58756  Agrostis idahoensis Overton, Butler 1979-7-24 9800 Humboldt Near Black Rock, close to the town of Willow Creek 1463 Comment
  UC1103394  Agrostis idahoensis Joseph P. Tracy 1935-7-27 14279 Humboldt Corral Prairie Trinity Summit, Corral Prairie 1584 Comment
  UCD52793  Agrostis idahoensis A. H. Murphy 1951-8-17 89 Humboldt Humboldt - Trinity County Line: Racetrack Springs, South Fork Mtn., 15 miles northeast of Bridgeville. 1219 Comment
  UC1103395  Agrostis oregonensis Joseph P. Tracy 1941-8-24 17039 Humboldt wet meadow near McKay Camp; South Fork Mountain 1676 Comment
  UC552750  Agrostis oregonensis Joseph P. Tracy 1934-7-13 13392 Humboldt Dows Prairie North Coast Ranges 60 Comment
  CHSC36406  Agrostis stolonifera Donald M. Burk 1981-7-25 54 Humboldt At junction of Rd. 5N10 and Rd. 5N10C. 1249 Comment
  HSC99594  Agrostis stolonifera K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-8-10 262 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  SEINET11683259  Agrostis stolonifera K. S. Erdman 1970-1 4773 Humboldt Counts Hill prairie on Bald Hills Rd, SE of Orick 853 Comment
  CAS-BOT-BC138572  Agrostis variabilis Joseph P. Tracy 1930-7-16 8948 Humboldt Northern Coast Ranges. South Fork Mountain. Along summit near Blake Lookout. 1737 Comment
  HSC65424  Aira caryophyllea J. P. Smith, J. O. Sawyer 1973-5-12 6683 Humboldt 3.3 mi. from Redwood Creek on Hoopa Rd. Comment
  HSC8851  Aira caryophyllea H. E. Parks, S. T. Parks Jun 1936 5850 Humboldt Spruce Cove, Trinidad Comment
  UC526681  Aira caryophyllea Joseph P. Tracy 1927-6-19 8199 Humboldt Big Lagoon Northern Coast Region 6 Comment
  UC726346  Aira caryophyllea A. A. Heller 1923-7-8 13765 Humboldt 10 mi s Dyerville; Humboldt Camp Comment
  HSC90692  Aira praecox Gail Newton 1982-5-5 3558 Humboldt Elk River Wildlife Area, Eureka. Comment
  HSC2883  Alisma triviale Paul Shields 1955-9-23 Humboldt 5 mi. SE of Arcata Comment
  HSC98976  Allium acuminatum Cara Witte 2008-7-14 900 Humboldt White Oak Opening. Along Kinsey Ridge. 1257 Comment
  CAS-BOT-BC460747  Allium amplectens C. C. Harris; S. K. Harris 1936-6-24 645 Humboldt At point where the road from Bridgeville to Dinsmore crosses the Little Van Duzen River. 701 Comment
  RSA21655  Allium amplectens Carl B. Wolf 1937-6-14 8810 Humboldt Kneeland Prairie; North Coast Range. 823 Comment
  HSC32884  Allium bolanderi var. bolanderi Thomas W. Nelson, James Nelson 1973-5-28 936 Humboldt McKeown Ranch N of Dinsmore Comment
  HSC100546  Allium campanulatum Carl C. Marshall Jun 1886 304 Humboldt Trail E of Hoopa. Comment
  HSC43977  Allium falcifolium B. Klipfel 1974-6-25 435 Humboldt Horse Mtn., near the towers Comment
  HSC32124  Allium hoffmanii D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5588 Humboldt Mt. Lassic and two smaller peaks to immediate E 1768 Comment
  HSC71823  Allium hoffmanii Thomas W. Nelson, Jane P. Nelson 1980-6-27 5955 Humboldt Ridge S of Mt. Lassic (Signal Peak) 1524 Comment
  HSC81792  Allium hoffmanii Thomas W. Nelson, Jane P. Nelson 1980-6-27 5935 Humboldt Along old trail to pond, 0.5 mi. N of Alder Spring 1555 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
  JEPS47611  Allium siskiyouense Joseph P. Tracy 1933-7-16 12789 Humboldt along summit near Blake lookout; Northern Coast Ranges, South Fork Mountain 1706 Comment
  UCR32184  Allium siskiyouense David J. Keil 1983-7-2 17327 Humboldt Horse Mountain Summit SW of Willow Creek 1509 Comment
  CDA18808  Allium triquetrum P. Haggard 2000-2-22 PDR 018177 Humboldt Glen St., Eureka. 0 Comment
  UC15002  Allium unifolium Joseph Burtt Davy 1899-6-11 5444 Humboldt between Hubbard's Station and Elk Prairie Comment
  UC666922  Allium unifolium Joseph P. Tracy 1935-6-8 13953 Humboldt along coast in front of South End of Stone Lagoon; Dry Lagoon 15 Comment
  POM170198  Allium unifolium Jos Burtt Davy 1899-6-11 5444 Humboldt Between Hubbard s Station and Elk Prairie. Comment
  HSC2988  Allium validum J. P. Tracy 1930-7-16 8922 Humboldt Near McKay Camp. 1677 Comment
  HSC97998  Allium validum Cara Witte 2007-7-11 500 Humboldt Grouse Mountain. Forest Service Road 5N04. Near spring. 1583 Comment
  UC1224691  Allotropa virgata D. E. Anderson 1963-5-18 2447 Humboldt about 1 mi nw of Burnt Ranch School Comment
  CAS-BOT-BC170945  Alnus rhombifolia Doris K. Kildale 1926-12-13 1428 Humboldt Bridgeville on Van Duzen River 228 Comment
  UC162707  Alnus rhombifolia Joseph P. Tracy 1911-7-4 3296 Humboldt Willow Creek Northern Coast Ranges (near mouth (creek is a tributary of Trinity River)) 182 Comment
  CAS-BOT-BC169542  Alnus rubra Carl B. Wolf 1930-10-26 1767 Humboldt SO edge of Bog Lagoon, near Redwood Highway Bridge 9 Comment
  SEINET187411  Alnus rubra H. E. Parks, ST Parks 1938-4-1 24126 Humboldt Spruce Cove Trinidad 61 Comment
  UC72510  Alnus rubra H. P. Chandler 1905-5-1 Humboldt Eureka Comment
  UC54760  Alnus viridis subsp. sinuata Joseph Burtt Davy and Walter C. Blasdale 1899-5 5778 Humboldt Trinity Summit North Coast Ranges (Mendocino, Humboldt, and Del Norte Counties) Comment
  CAS-BOT-BC138145  Alopecurus aequalis var. aequalis Doris K. Kildale 1927-7-23 3801 Humboldt Hoaglin Lake. Near Lasseck's Peaks. Comment
  HSC2176  Ambrosia chamissonis H. E. Parks Aug 1941 24181 Humboldt Big Lagoon Comment
  HSC5662  Ambrosia chamissonis David Adams Oct 1960 Humboldt N bank of the Mad River near mouth 0 Comment
  HSC5663  Ambrosia chamissonis D. E. Anderson 1961-9-2 1771 Humboldt 3 mi. S of Cape Mendocino. 3 Comment
  UC127637  Ambrosia chamissonis J. P. Tracy 1901-8-7 1275 Humboldt at, on Sea Beach opposite Eureka Samoa Comment
  CAS-BOT-BC142886  Amelanchier alnifolia var. semiintegrifolia Doris K. Kildale 1927-5-13 3135 Humboldt Redwood Creek at Berry's 289 Comment
  HSC31452  Amelanchier alnifolia var. semiintegrifolia D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-13 5570 Humboldt Westward lower slopes of Black Lassic near Trinity Co. line. 1585 Comment
  HSC71057  Amelanchier alnifolia var. semiintegrifolia Thomas W. Nelson, Jane P. Nelson 1977-5-30 3391 Humboldt McKeown Ranch. Along road to Anderson's Ford. 854 Comment
  RSA183624  Amelanchier florida D. E. Anderson 1964-4-24 3541 Humboldt 0.5 mile from Hwy 299, on Titlow Hill road. Comment
  RSA385128  Ammophila arenaria Edith A. Purer 1932-7-27 4157 Humboldt Samoa sand dunes. Comment
  SD41377  Ammophila arenaria Edith A. Purer 1932-7-30 4678 Humboldt South of Orick, sand dunes. Comment
  HSC3518  Amsinckia intermedia Doris K. Kildale 1926-4-4 1727 Humboldt Above Big Lagoon Comment
  HSC26473  Amsinckia spectabilis T. O. Osborne 1970-4-8 15 Humboldt Sugarloaf Rock, Cape Mendocino 76 Comment
  UCD128833  Anaphalis margaritacea Linda M. Barker 1976-8-2 1671 Humboldt 3 miles west of Arcata. Comment
  POM232054  Anaphalis margaritacea Roxana S. Ferris 1937-8-21 9387 Humboldt Face of cliff above beach, Shelter Cove. Comment
  CAS-BOT-BC391777  Anemone deltoidea Mrytle Paulson 1918-4-28 s.n. Humboldt Eureka Comment
  CAS-BOT-BC391786  Anemone deltoidea Mrs. H. C. Cantelow 1936-5-17 s.n. Humboldt 4 1/2 miles east of Orick 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
  UC160913  Anemone deltoidea J. P. Tracy 1906-5-20 2467 Humboldt vicinity of Eureka (near Cutten and MacDonald Tract) 0 Comment
  UC1051574  Angelica genuflexa Joseph P. Tracy 1948-9-12 18206 Humboldt Trinity Summit, at Box Camp Trinity Summit; , Box Camp 1463 Comment
  UC1051575  Angelica genuflexa Joseph P. Tracy 1948-9-12 18206 Humboldt Trinity Summit, at Box Camp Trinity Summit; , Box Camp 1463 Comment
  JEPS16074  Angelica genuflexa W. L. Jepson 1936-8-17 17910 Humboldt Fields Landing, Stills Ranch Fields Landing; , Stills Ranch Comment
  JEPS16075  Angelica genuflexa W. L. Jepson 1936-8-17 17915 Humboldt Fields Landing, Stills Ranch Fields Landing; , Stills Ranch Comment
  UC582633  Angelica hendersonii Joseph P. Tracy 1937-8-22 15674 Humboldt Table Bluff 91 Comment
  HSC71328  Angelica lucida J. M. DiTomaso 1981-6-16 2013 Humboldt Hwy. 101, 1 mi. S of Samoa Blvd., Arcata. Comment
  HSC98637  Angelica tomentosa Cara Witte 2007-7-25 578 Humboldt Forest Service Road 5N10. Approximately 1/2 mile from intersection with Forest Service Road 5N41. 1283 Comment
  SEINET13943409 Image available Angelica tomentosa W. A. Weber 1964-1 12204 Humboldt Mountain grade between summit of ridge separating Redwood Creek from Hoopa Valley, a few miles west of Hoopa Comment
  UC642243  Angelica tomentosa Joseph P. Tracy 1938-9-5 16145 Humboldt Northern Coast Ranges, Willow Creek Canyon 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
  UC1537061  Anisocarpus madioides Gordon H. True Jr. 1936-5-11 465 Humboldt 12 mi w Miranda (e slope Elk Ridge); Elk Ridge 365 Comment
  CAS-BOT-BC84701  Anthemis arvensis M. Louise Hutchinson 1913-5-1 s.n. Humboldt Garberville Comment
  UCD85343  Anthoxanthum occidentale Linda M. Barker 1976-2-22 1312 Humboldt Coast forest and dunes 3 miles west of Arcata. Comment
  HSC34811  Anthoxanthum odoratum Dryden 1975-4-21 128 Humboldt Arcata 0 Comment
  HSC8951  Anthoxanthum odoratum E. W. Styskel 1963-5-19 43 Humboldt 3 mi. SE of Korbel on Snow Camp Rd. 290 Comment
  RSA34311  Anthoxanthum odoratum L. Larsen 1935-5-7 s.n. Humboldt Arcata Comment
  UCD56278  Anthoxanthum odoratum H. E. Parks; S. T. Parks 1952-4 24444 Humboldt Trinidad, Spruce Cove. 60 Comment
  RSA371546  Antirrhinum vexillocalyculatum subsp. breweri David M. Thompson 1983-6-30 360 Humboldt Orleans vicinity. 40 ft. N of the southern junction of Cedar Camp Road and Hwy. 96. 183 Comment
  UC1196740  Antirrhinum vexillocalyculatum subsp. breweri Joseph P. Tracy 1925-7-12 7203 Humboldt w of South Fork of Trinity River mouth 304 Comment
  UC444959  Antirrhinum vexillocalyculatum subsp. breweri Joseph Burtt Davy and Walter C. Blasdale 1899-6-26 5890 Humboldt Francis Range in the Bald Hills; North Coast Ranges Comment
  UC1198743  Aphanes occidentalis Joseph P. Tracy 1934-3-11 13149 Humboldt Weitchpec 121 Comment
  HSC98059  Apocynum androsaemifolium Cara Witte 2007-7-11 498 Humboldt Grouse Mountain Lookout. Forest Service Road 4N70. 1641 Comment
  UC153989  Apocynum androsaemifolium Joseph P. Tracy July, 1908 2786 Humboldt ridge between Van Duzen and Mad Rivers near Low Gap; Northern Coast Ranges, Humboldt and Trinity Co. 914 Comment
  UC34969  Apocynum cannabinum Chesnut and Drew 1888-7-28 Humboldt Grouse Creek Comment
  HSC18044  Aquilegia formosa D. E. Anderson 1965-5-1 3568 Humboldt Along Hwy. 96, 1.9 mi. N of Willow Creek Comment
  HSC18040  Aquilegia formosa var. formosa Greg Bos 1965-5-2 235 Humboldt 5 mi. E of Korbel on Bald Mtn. Rd. 732 Comment
  HSC100612  Aquilegia truncata Carl C. Marshall Jun 1886 121 Humboldt Everywhere, Humboldt Bay. Comment
  HSC102930  Arabis M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-12 929 Humboldt Rustic Camp, northwest of Patterson Meadows 1512 Comment
  HSC32155  Arabis breweri var. breweri D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5595 Humboldt Mt. Lassic and two smaller peaks to immediate E 1768 Comment
  HSC58087  Arabis divaricarpa var. interposita G. L. Clifton, Griswold 1979-8-1 11996 Humboldt Near N Trinity Mtn., close to the town of Hoopa 1799 Comment
  HSC57443  Arabis glabra G. L. Clifton, Griswold 1979-7-26 10246 Humboldt Near High Spring, close to the town of Forks of Salmon 2024 Comment
  HSC74547  Arabis platysperma M. A. Baker 1980-7-24 3211 Humboldt Near Orleans Mtn. 1625 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
  UC1408964  Aralia californica Robert F. Thorne and P. Everett 1965-8-5 35137 Humboldt below summit Mt. Chamisal 579 Comment
  RSA1432  Aralia californica E. R. Johnson 1929-08 616 Humboldt 5 miles S of Weott Comment
  HSC40306  Arbutus menziesii Linda M. Barker 1976-4-30 1405 Humboldt 3 mi. W of Arcata Comment
  UC1225938  Arctostaphylos X media Joseph P. Tracy 1945-3-30 17505 Humboldt Eureka 45 Comment
  CAS-BOT-BC24093  Arctostaphylos canescens subsp. canescens Carl B. Wolf 1937-9-13 9335 Humboldt North Coast range Horse Mt. 1524 Comment
  CAS-BOT-BC23908  Arctostaphylos canescens subsp. sonomensis Walter Knight; Irja Knight 1988-9-4 s.n. Humboldt Horse Mountain Recreation Area. On embankment between Summit Road junction and electronic towers at summit. Comment
  CAS-BOT-BC23781  Arctostaphylos columbiana Joseph P. Tracy 1933-6-13 12583 Humboldt Hoopa Mountain. Near summit on road from Hoopa westward to Bair's. On ridge 1 mile S. of road. 1219 Comment
  CAS-BOT-BC23789  Arctostaphylos columbiana Walter Knight 1965-8-4 1157 Humboldt Shelter Cove - Thorn Jct. - approx. 4 mi. S of Mendocino-Humboldt Co. line. 365 Comment
  CAS-BOT-BC23822  Arctostaphylos columbiana Carl B. Wolf 1930-10-29 1040 Humboldt Old Coast Road, 7 miles south of Honeydew Post Office. 304 Comment
  RSA134585  Arctostaphylos columbiana P. C. Everett, E. K. Balls, George B. Everett 1959-10-26 23975 Humboldt 4 mi. se from Honeydew along Old Coast Road to Ettersburg. 457 Comment
  RSA622692  Arctostaphylos columbiana Jon E. Keeley, John Sawyer 1996-10-12 27674 Humboldt Along Highway 101 at edge of cutover redwood forest, 6 km south of Drury Scenic Parkway and Prairie Creek Redwoods State Park, north of Eureka. 320 Comment
  UC1174868  Arctostaphylos columbiana P. C. Everett and E. K. Balls 1959-10-25 23965 Humboldt 8.8 mi ne from Blue Lake (US Hwy 299, Arcata to Willow Creek) 274 Comment
  UC1198653  Arctostaphylos columbiana Joseph P. Tracy 1934-2-22 13133 Humboldt vicinity of Trinidad Northern Coast Region 60 Comment
  SEINET11995489  Arctostaphylos columbiana W. Knight, Knight, I. 1988-1 6363 Humboldt Bald Hill Rd about 21.5 mi from US 101 en route to Hoopa 930 Comment
  RSA12517  Arctostaphylos columbiana var. columbiana C. B. Wolf 1934-7-3 5919 Humboldt 21 mi. from Orick on Weitchpec Rd. Comment
  POM209627  Arctostaphylos columbiana var. columbiana H. E. Parks 1931-12 4950 Humboldt Hobson's Trinidad. 61 Comment
  SEINET11989090  Arctostaphylos columbiana var. tracyi R. Gankin, Hildreth, W. R. 1967-1 1170 Humboldt 21.4 mi E of US 101 on Bald Hills Rd (from Orick), French Camp Ridge Comment
  UCD51037  Arctostaphylos glandulosa Joseph M. DiTomaso 1976-3-28 348 Humboldt West side of Lord Ellis summit on State Highway 299 between Arcata and Willow Creek. 762 Comment
  SD230217  Arctostaphylos glandulosa subsp. glandulosa Louis C. Wheeler 1959-8-1 7621 Humboldt Queens Peak Mine. Comment
  HSC37829  Arctostaphylos manzanita Thomas W. Nelson, Jane P. Nelson 1976-2-21 2249 Humboldt Tish-Tang Campground Comment
  CHSC110739  Arctostaphylos manzanita subsp. glaucescens Dean Wm. Taylor 2011-5-4 21119 Humboldt Larabee Valley, along Highway 36 about 1 mile east of the eastern end of the valley at the bridge for the Little Van Duzen River. 701 Comment
  UC162734  Arctostaphylos manzanita subsp. manzanita Joseph P. Tracy 1911-7-8 3449 Humboldt near mouth of Willow Creek; Northern Coast Ranges, Valley of Trinity River 152 Comment
  CAS-BOT-BC46630  Arctostaphylos patula Joseph P. Tracy 1939-8-16 16419 Humboldt Grouse Mountain. 1524 Comment
  CAS-BOT-BC46675  Arctostaphylos patula Doris Kildale Gillespie 1931-6-7 10617 Humboldt South Fork Mt. Blake Lookout. 1726 Comment
  HSC70475  Arctostaphylos patula Gail Newton 1980-7-15 1588 Humboldt Near Sims Mtn. 1311 Comment
  CHSC591  Arctostaphylos uva-ursi 1930-3-30 Humboldt Comment
  HSC7725  Arctostaphylos uva-ursi S. J. Hawks 1965-3-19 10 Humboldt 1/4 mi. W of Fairhaven Comment
  SEINET2029875 Image available Arctostaphylos uva-ursi Joseph P. Tracy 1940-10-3 16740 Humboldt Near Samoa, on Humboldt Bay 6 Comment
  SEINET2031083 Image available Arctostaphylos uva-ursi Joseph P. Tracy 1940-1 16740 Humboldt Sand dunes, near Samoa, on Humboldt Bay 6 Comment
  UC484044  Arctostaphylos uva-ursi Carl B. Wolf 1930-10-28 1779 Humboldt Samoa Humboldt Bay 15 Comment
  UCD52029  Arctostaphylos uva-ursi Joseph P. Tracy 1945-3-30 17500 Humboldt 45 Comment
  UCD52039  Arctostaphylos uva-ursi Roman Gankin 1965-8-6 556 Humboldt 1.3 miles south of Samoa, Samoa Peninsula. Comment
  HSC70634  Arctostaphylos viscida R. York 1980-5-18 605 Humboldt Near Black Mtn. 390 Comment
  HSC94000  Arctotheca calendula T. C. Fuller, G. D. Barbe 1989-6-8 4321 Humboldt Larry Pries dairy, 3.4 mi W of Main Street, on Centerville beach rd. Ferndale Comment
  UC668124  Arenaria congesta var. suffrutescens Joseph P. Tracy 1932-7-12 10478 a Humboldt Head of Brett Hole Trinity Summit, Brett Hole 1828 Comment
  CAS-BOT-BC384746  Arenaria serpyllifolia var. serpyllifolia Joseph P. Tracy 1933-5-18 12192 Humboldt Along Mad River, near Blue Lake 15 Comment
  SEINET3918774  Aristida adscensionis J. I. Mallory 1955-9-17 122 Humboldt North-northwest 3/8 miles of headquarters, Cottrell Ranch. Quad. 29A-2.; 0 747 Comment
  CAS-BOT-BC82103  Arnica cernua Thomas Nelson 1974-5-30 1345 Humboldt along the Hoopa-Redwood Valley Road Comment
  HSC48024  Arnica cernua Brad Klipfel 1974-6-25 423 Humboldt Horse Mtn. Comment
  HSC49992  Arnica cernua M. A. Baker 1979-6-7 791 Humboldt 1250 Comment
  HSC99042  Arnica cernua Cara Witte 2008-6-4 681 Humboldt Horse Mountain Botanical Area. Forest Service Road 6N38. Near Horse Mountain mine. 1276 Comment
  HSC79315  Arnica cordifolia D. K. Imper 1982-7-2 Humboldt Six Rivers National Forest, near Lassics Lookout 1524 Comment
  HSC98683  Arnica discoidea Cara Witte 2008-7-11 882 Humboldt Spike Buck Mountain. Forest Service Road 5N18. 0.5 mi. from intersection with National Forest 1. 1589 Comment
  JEPS20984  Arnica discoidea Joseph P. Tracy 1937-7-2 15398 Humboldt 2 mi e Grove's Prairie; Trinity Summit 1524 Comment
  UC1223000  Arnica discoidea Joseph P. Tracy 1950-8-8 19273 Humboldt near, (2 mi e of town, on trail to Groghan Hole) Box Camp; Trinity Summit 1524 Comment
  RSA46799  Arnica latifolia Doris K. Kildale 1926-4-25 1808 Humboldt Sugar Bowl Mt. near Hoopa 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
  HSC99551  Artemisia douglasiana K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-8-10 216 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  RSA167208  Artemisia douglasiana Joseph P. Tracy 1947-8-24 17892 Humboldt Trinity Summit- Meadow at Box Camp 1463 Comment
  JEPS37044  Artemisia dracunculus Milo S. Baker 1923-7-19 86 Humboldt near Carlotta (bed of Van Dusen River); Van Dusen River Comment
  UC275467  Artemisia pycnocephala H. E. Parks and Joseph P. Tracy 1925-6-26 7135 Humboldt Samoa Sand Dunes Humboldt Bay, Samoa Sand Dunes 15 Comment
  UC672846  Asarum caudatum Joseph P. Tracy 1935-7-23 14160 Humboldt Trinity Summit, lower end of Brett Hole 1584 Comment
  HSC62839  Asarum caudatum J. M. DiTomaso 1979-4-8 854 Humboldt Behind Humboldt State University campus, Arcata Comment
  HSC97950  Asarum hartwegii Cara Witte 2007-6-28 388 Humboldt Forest Service Road 6N08 (Friday Ridge Road). Near mile post 9.31 1278 Comment
  SEINET12097904  Asarum hartwegii H. P. Chandler 1901-1 1478 Humboldt Klamath River 396 Comment
  UC162718  Asclepias cordifolia Joseph P. Tracy 1911-7-9 3477 Humboldt near Willow Creek (hill slopes at w side of river); Northern Coast Ranges, Trinity River 182 Comment
  RSA417645  Aster chilensis M. B. Dunkle 1936-8-18 4811 Humboldt Fortuna Comment
  HSC100424  Aster foliaceus Carl C. Marshall Sep 1886 247 Humboldt Everywhere. Comment
  CDA17341  Aster occidentalis P. Haggard 2004-8-15 PDR 1285931 Humboldt North Coast Ranges; Six Rivers National Forest, Friday Ridge Rd. 0 Comment
  RSA47181  Aster radulinus Doris K. Kildale 1925-8-21 1312 Humboldt Yager Comment
  JEPS16849 Image available Astragalus agnicidus Henry Tosten 1931-6-7 Humboldt 4 mi s Miranda (near Bear Buttes, on Tosten and Pierce Ranch); ; Tosten & Pierce Ranch, near Bear Buttes, S of Miranda, Humboldt Co. 762 Comment
  UC1222422  Astragalus rattanii var. rattanii Joseph P. Tracy 1962-7-24 19626 Humboldt Blue Slide on Van Duzen River (Van Duzen); , Blue Slide 91 Comment
Read comments
Jun 28 2015
  SEINET12160220  Astragalus umbraticus J. P. Tracy 1940-1 16706 Humboldt Bald Mt at 'Lake Prairie 1067 Comment
  HSC56967  Asyneuma prenanthoides Overton, Butler 1979-7-23 9491 Humboldt Near Titlow Hill, close to the town of Willow Creek. 1280 Comment
  UCD136291  Athyrium filix-femina W. L. Jepson 1932-8-8 16529 Humboldt Weott (hill above). Comment
  HSC55038  Athyrium filix-femina var. cyclosorum Gilbert Muth 1979-7-31 11498 Humboldt Near Tish Tang A Tang Creek, S Fork, close to the town of Hoopa 1417 Comment
  HSC10342  Athyrium filix-femina var. cyclosorum W. R. Supernaugh, Jr. 1964-12-12 8 Humboldt 1 mi. W of Freshwater Corners on Old Arcata Rd on S side of Hwy. Comment
  HSC101991  Athysanus pusillus M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-12 890 Humboldt Patterson Meadows 1566 Comment
  HSC26349  Atriplex patula T. O. Osborne 1970-6-19 74 Humboldt Flat-Iron Rock, 3/4 mi. NW Trinidad Light. Comment
  UC161058  Atriplex triangularis Joseph P. Tracy 1911-10-22 3552 Humboldt Salt marsh near Eureka (region about Humboldt Bay); Northern Coast Region, , nr Eureka 0 Comment
  HSC9023  Avena fatua N. R. Waite 1965-5-18 34 Humboldt W edge of Humboldt State University campus Comment
  UC526703  Avena fatua Joseph P. Tracy 1926-5-9 7457 Humboldt hills near Bridgeville; North Coast Ranges 609 Comment
  JEPS21244  Baccharis glutinosa Lincoln Constance 1934-5-29 712 Humboldt Upper Look Prairie Bull Creek Region, South Fork Eel River 365 Comment
  HSC100425  Baccharis pilularis Carl C. Marshall Feb 1887 391 Humboldt Hillsides near the coast. Comment
  UC525613  Beckmannia syzigachne Joseph P. Tracy 1928-6-24 8472 Humboldt Valley of South Yager Creek 762 Comment
  UC552762  Beckmannia syzigachne Joseph P. Tracy 1935-5-25 13848 Humboldt Fort Seward 106 Comment
  HSC39161  Bellis perennis D. E. Anderson, J. P. Smith 1971-6-28 - 1243 Humboldt Along Mad River, 2 mi. S of Blue Lake. Comment
  HSC39790  Bellis perennis Peter Sorensen 1976-6-16 Humboldt Woodley Island Comment
  HSC5186  Bellis perennis R. E. Hafenfeld 1965-5-9 41 Humboldt 1/2 mi. N Home Creek near Bold Bluff Beach Rd. Comment
  CAS-BOT-BC106352  Bellis perennis Joseph P. Tracy 1937-6-20 15345 Humboldt Bear River, ten miles up stream from the mouth. 152 Comment
  HSC75815  Bensoniella oregona Bill Copeland 1980-7-2 314 Humboldt Near Snow Camp Mtn. 1311 Comment
  UC1051579  Bensoniella oregona Joseph P. Tracy 1923-6-24 6363 Humboldt Bald Mountain in meadow near High Prairie; Northern Coast Ranges, Bald Mountain, nr High Prairie 1066 Comment
  HSC40904  Berberis aquifolium var. aquifolium J. O. Sawyer 1970-4-24 2192 Humboldt Along FS Rd. 7N04 at Cedar Creek below Groves Prairie Comment
  UCD95065  Berberis aquifolium var. aquifolium James P. Smith 1973-5-5 6478 Humboldt Along Cook and Green Pass Road. Comment
  HSC31569  Berberis nervosa Glenn McGourty 1974-5-11 39 Humboldt Timber trail off Maple Creek Rd. in Kneeland Comment
  HSC37365  Blechnum spicant Gary S. Lester, Roger L. Yearout, Judith G. Dickson 1974-7-24 497 Humboldt Along Lost Man Creek. 38 Comment
  POM118334  Blechnum spicant Marcus E. Jones 1924-4-26 s.n. Humboldt Eureka. Comment
  JEPS109416  Boechera subpinnatifida D. W. Taylor 2004-6-24 19131 Humboldt Horse Mountain, along Titlow Hill Road, 0.4 miles N from junction with the road to the mountain summit. Comment
  SEINET5766918  Boschniakia strobilacea C. Young 1967-5-15 s.n. Humboldt Orleans Comment
  RSA466744  Boykinia major Anstruther Davidson 1918-07 3340 Humboldt Eel River. Comment
  HSC20181  Boykinia occidentalis H. E. Parks, S. T. Parks Jun, Jul 1952 24451 Humboldt Spruce Cove, Trinidad 61 Comment
  CAS-BOT-BC420264  Boykinia occidentalis L. B. Kildale 1930-6-1 9746 Humboldt Klamath River at Weitchpec Comment
  CAS-BOT-BC420276  Boykinia occidentalis Doris K. Kildale 1927-6-25 3574 Humboldt Fearren's ranch between Thorn & Shelter Cove Comment
  SEINET12215472  Boykinia occidentalis H. P. Chandler 1901-1 1501 Humboldt Klamath River - North Coast Ranges 427 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
  HSC79522  Brassica rapa Kenneth Clark 1980-3-1 515 Humboldt Lower alluvial terrace, Dead Man's Gulch 15 Comment
  HSC70984  Brickellia greenei Gail Newton 1980-7-22 1660 Humboldt Near Devils Backbone 1554 Comment
  UC657696  Briza maxima P. B. Kennedy 1929-6-13 Humboldt Etterberg Comment
  HSC12346  Briza minor Steve Dorei 1970-10-31 137 Humboldt Scotia Bluffs, N of railroad tracks Comment
  HSC71719  Brodiaea elegans subsp. elegans M. A. Baker 1980-6-26 2445 Humboldt Near Sims Creek 610 Comment
  HSC72623  Brodiaea elegans subsp. elegans J. P. Smith 1977-7-3 9230 Humboldt On Forest Service Road 13N01 to Fish Lake, 3.5 mi. from its junction with Highway 36 488 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
  BLMAR554  Brodiaea terrestris Jennifer Wheeler 2004-5-20 554 Humboldt Stornetta Ranch Comment
Read comments
Apr 21 2014
  HSC90775  Brodiaea terrestris subsp. terrestris Peter Sorensen 1976-6-4 Humboldt N Spit Comment
  JEPS514  Brodiaea terrestris subsp. terrestris Joseph P. Tracy 1933-5-20 12249 Humboldt 1 mi. w. Petrolia; Northern Coast Ranges, Mattole Valley 91 Comment
  RSA728073  Bromus Gary D. Wallace 1979-6-24 1863 Humboldt Brush Mountain Lookout, SW of the town of Willow Creek. 1216 Comment
  SEINET943640  Bromus carinatus var. carinatus T. R. Van Devender, R. K. Van Devender 1990-1 90 -105 Humboldt Paticks Point State Park, near Trinidad Comment
  UC249783  Bromus carinatus var. carinatus Joseph P. Tracy 1923-6-19 6302 Humboldt Northern Coast Ranges, Wilder Ridge Wilder Ridge; Northern Coast Ranges, Wilder Ridge 762 Comment
  CDA18212  Bromus carinatus var. maritimus G. D. Barbe, T. C. Fuller 1974-6-17 1840 Humboldt North Coast Ranges; Shelter Cove, uphill, E of Sail Court. 91 Comment
  RSA10039  Bromus commutatus Joseph P. Tracy 1933-6-9 12534 Humboldt Shively. On Eel River. 30 Comment
  UC526931  Bromus commutatus Joseph P. Tracy 1933-6-9 12534 Humboldt North Coast Ranges, on Eel River, Shively Shively; North Coast Ranges, Eel River, Shively 30 Comment
  HSC9278  Bromus diandrus W. F. Nickel 1965-5-13 Humboldt College Elementary School, on HSU campus. Comment
  HSC9287  Bromus diandrus R. D. Modafferi 1965-5-9 52 Humboldt 0.2 mi. N of Trinidad on Trinity St. 305 Comment
  JEPS72930  Bromus hordeaceus Lincoln Constance 1934-5-26 673 Humboldt Bull Creek Region, South Fork Eel River, s end of Dyerville Bridge South Fork Eel River; Bull Creek Region, , Dyerville Bridge 45 Comment
  UC34106  Bromus hordeaceus Joseph Burtt Davy and Walter C. Blasdale 1899-6-8 5349 a Humboldt Bells Spring; North-Western California, Bells Spring Comment
  UCD58883  Bromus laevipes Joseph P. Tracy 1950-6-15 18785 Humboldt Mail Ridge. North of Harris 7 miles. 1036 Comment
  HSC54214  Bromus tectorum Griswold, Butler 1979-7-12 7264 Humboldt Near Cedar Creek, close to the town of Willow Creek 1158 Comment
  UC1103353  Bromus tectorum Joseph P. Tracy 1933-6-13 12600 Humboldt from Hoopa westward to Bair's (near summit of Horse Mountain); Horse Mountain 914 Comment
  RSA484551  Cakile edentula M. B. Dunkle 1936-8-18 4823 Humboldt Moonstone Beach. Comment
  POM312414  Cakile edentula Malcolm A. Nobs, Walter Wisura 1949-8-11 1337 Humboldt Eastern shore of Stone Lagoon. Comment
  HSC103973  Cakile maritima C. Reynolds 2015-3-16 18 Humboldt Along Freshwater Beach, due south of the Kuchel Visitor Center 1 Comment
  HSC49024  Cakile maritima Patricia Shesgreen 1978-8-19 143 Humboldt Mad River Beach, Arcata Comment
  HSC69642  Cakile maritima R. Kalal 1980-6-3 14 Humboldt 1 mi. S of Samoa 6 Comment
  HSC46014  Cakile maritima Catherine Chin 1978-8-13 104 Humboldt Trinidad State Park, College Cove Beach Comment
  SEINET11092947  Cakile maritima Unknown 1948-6-10 18062 Humboldt CALIFORNIA PLANTS -- HUMBOLDT COUNTY Dwarf plants abundant. A very recent introduction TRINIDAD Beach west of town. Altitude 10 to 200 feet. Comment
  CAS-BOT-BC36911  Cakile maritima var. maritima Kenneth Clark 1981-5-24 1395 Humboldt Shelter Cove. 300 yards west of Dead Man's gulch. 3 Comment
  RSA647567  Cakile maritima var. maritima William Gilbert 1970-6-3 s.n. Humboldt 101 Hwy, 10 miles S [of] Klamath River. Comment
  RSA10029  Calamagrostis canadensis Joseph P. Tracy 1932-7-14 10553 Humboldt Klamath Mountains; Trinity Summit. Wet Meadow at Corral Prairie 0 Comment
  UC1145052  Calamagrostis foliosa Joseph P. Tracy 1938-6-17 15967 A Humboldt near Panther Gap (on road between Mattole and Bull Creek) 822 Comment
  SEINET200619 Image available Calamagrostis koelerioides Joseph P. Tracy 1934-7-18 13408 Humboldt Horse Mountain. Comment
  UCD57256  Calamagrostis koelerioides R. Tofsrud 1948-9-1 s.n. Humboldt Road junction near summit of Horse Mt. 1463 Comment
  CAS-BOT-BC185183  Calamagrostis nutkaensis David D. Keck 1948-7-1 5976 Humboldt Northeast end of Big Lagood. Comment
  UC1198380  Calandrinia ciliata Joseph P. Tracy 1933-5-28 12405 Humboldt Ocean View Cemetary Eureka 15 Comment
  UC1922744  Callitriche heterophylla subsp. bolanderi Robert F. Thorne, P. Everett 1965-8-9 35345 Humboldt Along Hwy. 101 about 3 mi. N or Eureka. Comment
  UC1922745  Callitriche heterophylla subsp. bolanderi Robert F. Thorne, P. Everett 1965-8-9 35323 Humboldt CLAM BEACH COUNTY PARK: along highway. Comment
  HSC62829  Callitriche stagnalis J. M. DiTomaso 1979-5-29 1080 Humboldt Arcata Bottoms, 1.7 mi. W of Alliance Rd. on Lanphere Rd. Comment
  JEPS61632  Calochortus amabilis Lincoln Constance 1934-6-1 769 Humboldt between Bull Creek flat grove (mouth of Bull Creek) and Dyerville Bridge (Bull Creek road); South Fork Eel River, Bull Creek Region 45 Comment
  UC1197682  Calochortus coeruleus Joseph P. Tracy 1932-7-15 10582 Humboldt e of Corral Prairie; Trinity Summit 1828 Comment
  HSC15345  Calochortus tolmiei Class 1937-4-29 Humboldt Miranda Comment
  HSC36504  Calochortus tolmiei Thomas W. Nelson, Jane P. Nelson, James Nelson 1975-6-14 1887 Humboldt Beside branch off FS 2S08 to Pine Mtn. Comment
  HSC38517  Calochortus tolmiei D. E. Anderson, J. P. Smith 1971-6-18 - 1082 Humboldt Horse Mtn. Comment
  HSC34909  Calochortus tolmiei Thomas W. Nelson 1975-5-27 1883 Humboldt Beside Petrolia-Ferndale Rd., 5 mi. S of Ferndale Comment
  UC1222547  Calochortus vestae Joseph P. Tracy 1950-6-23 18868 Humboldt 3 mi ne Alderpoint; Dobbyn Creek 213 Comment
  UC502923  Caltha biflora Joseph P. Tracy 1932-7-17 10671 Humboldt Ridges east of Corral Prairie, Trinity Summit; Klamath Mountains. 1828 Comment
  UC176850  Calycadenia fremontii Joseph P. Tracy 1911-7-4 3282 Humboldt near, west side of Trinity River Willow Creek; Northern Coast Ranges, Trinity River 243 Comment
  HSC16575  Calypso bulbosa D. E. Anderson 1965-5-15 3683 Humboldt About 7 mi. N of Hoopa on Bloody Camp Prairie Rd. Comment
  HSC36647  Calypso bulbosa J. D. Ackerman 1975-6-4 443 Humboldt 5 mi. E of hwy. 101, on Bald Hills Rd. Redwood Natl. Park 396 Comment
  HSC75952  Calyptridium monospermum Overton, Butler 1979-7-24 9736 Humboldt Near Black Rock, close to the town of Willow Creek. 1554 Comment
  HSC97465  Calyptridium monospermum Cara Witte 2007-5-29 122 Humboldt Along National Forest 1. Approximately 4 miles south of intersection National Forest 1 and 5N04. 1441 Comment
  UCD126163  Calystegia soldanella Roman Gankin 1965-8-6 559 Humboldt 1.3 miles south of Samoa, Samoa Peninsula. Comment
  HSC90256  Calystegia soldanella Jean Hanson 1980-5-24 82 Humboldt Indian (Gunther) Island in Humboldt Bay, Eureka. W end of island within 15 ft. of high tide line Comment
  UC198628  Calystegia soldanella Joseph P. Tracy 1917-5-30 4803 Humboldt sand dunes near Little River; Northern Coast Ranges, near Little River 6 Comment
  NY679547  Camissonia cheiranthifolia subsp. cheiranthifolia A. A. Heller 1924-7-24 13881 Humboldt At Humboldt County camp, 7 miles S of Trinidad. Comment
  HSC78087  Camissonia strigulosa L. P. Janeway, Amy Eisenberg 1984-4-24 745 Humboldt On N Spit of Humboldt Bay, SE side of intersection of Samoa and Fairhaven Rds. and E of the Willow patch 3 Comment
  RSA43830  Campanula prenanthoides H. M. Pollard 1948-7-23 s.n. Humboldt Reece Point near Orleans. Comment
  SEINET10840309  Campanula prenanthoides Lincoln Constance 1934-6-11 Constance 854 Humboldt HUMBOLDT REDWOOD PARK ABOVE RD OPP. MOUTH BULL CR., DRY S BANK ABOVE RD 250 Comment
  SEINET10873276  Campanula prenanthoides Olmo 1928-6-10 OLMO s.n. Humboldt WOOLEY CREEK Comment
  HSC72633  Campanula scouleri J. P. Smith 1977-7-3 9250 Humboldt Six Rivers National Forest, along the road to Onion Lake, just above Blue Lake 976 Comment
  SEINET10463746  Campanula scouleri Newton 1981-7-23 Newton 2280 Humboldt Pilot Creek quadrangle; near Bug Creek Butte, streamside. 1350 Comment
  SEINET10463685  Campanula scouleri Chesnut 1888-7-19 CHESNUT s.n. Humboldt PILOT RIDGE Comment
  SEINET10463755  Campanula scouleri Baker 1923-7-20 Baker 52 Humboldt Road from Redwood 61 Comment
  HSC12555  Capsella bursa-pastoris D. La Conte 1970-10-11 16 Humboldt Cultivated area Comment
  HSC103887  Cardamine angulata Dana York, Laura Julian, Hilary Sundeen, Jenny Lynn Hutchinson 2014-5-14 3231 Humboldt Redwood State and National Parks; in the Lost Man Creek drainage, along a dirt road, 1.2 air-km E of State Route 101, just above the south bank of Lost Man Creek. 24 Comment
  UC302119  Cardamine angulata Joseph P. Tracy 1926-5-22 7510 Humboldt Prairie Creek Northern Coast Ranges, Prairie Creek 152 Comment
  BLMAR76  Cardamine californica Jennifer Anthony-Wheeler 1994-6-2 76 Humboldt IAQUA, gwng up logging rd in conif forest 853 Comment
  HSC6692  Cardamine californica D. E. Anderson 1962-3-18 1941 Humboldt Jacoby Creek Comment
  HSC6693  Cardamine californica S. R. Johnson 1965-3-28 20 Humboldt 1.5 mi. N of Luffenholtz Beach Comment
  RSA10948  Cardamine californica var. sinuata Victor Duran 1933-5-11 3405 Humboldt Van Duzen River, near Bridgeville. Comment
  UC1199208  Cardamine oligosperma Joseph P. Tracy 1921-4-24 5439 Humboldt Phillipsville Flat Northern Coast Ranges, South Fork Eel River (South Fork Eel River) 91 Comment
  UCR45400  Cardamine oligosperma Barry Silver 1986-4-23 539 Humboldt North Coast Range, Bair Road, 9.5-10 mi NW of the junction with Hwy 299; Pine Ridge Summit Area 997 Comment
  CAS-BOT-BC38127  Cardamine pensylvanica Joseph P. Tracy 1937-7-2 15401 Humboldt Trinity Summit. Head of Little Hors-Linto Creek. 1371 Comment
  RSA167248  Carduus tenuiflorus Joseph P. Tracy 1947-6-8 17703 Humboldt 0.5 mile west of town Comment
  CAS-BOT-BC18515  Carex abrupta Joseph Prince Tracy 1932-7-14 10546 Humboldt Trinity Summit. Corral Prairie. 1584 Comment
  HSC70464  Carex aquatilis Gail Newton 1980-7-20 1646 Humboldt Near Bell Swamps 1426 Comment
  CHSC43008  Carex aquatilis var. dives L. P. Janeway 1987-7-30 2533 Humboldt At Dry Lagoon. 3 Comment
  UC562253  Carex aquatilis var. dives Joseph P. Tracy 1935-6-8 13948 Humboldt along coast in front of South End of Stone Lagoon (Dry Lagoon); Dry Lagoon 6 Comment
  HSC76400  Carex aquatilis var. dives L. P. Janeway 1982-8-7 118 Humboldt Dry Lagoon, middle of lagoon 3 Comment
  RSA167283  Carex athrostachya Joseph P. Tracy 1950-7-6 18990 Humboldt Burr Valley, NW slope of Buck Mtn 1067 Comment
  CHSC45707  Carex barbarae L. P. Janeway 1984-4-28 750 Humboldt Along W side of S Fk Eel River at Butte Cr; across the river from Miranda. 67 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
  RSA364615  Carex barbarae Henry M. Pollard 1948-7-29 s.n. Humboldt At Woodson Mine, near Orleans. Comment
  HSC36160  Carex bolanderi Thomas W. Nelson, Jane P. Nelson, James Nelson 1975-7-20 2051 Humboldt FS Rd. 2S08, below Alder Springs Comment
  HSC23092  Carex brainerdii D. H. Norris 1971-5-17 19078 Humboldt On trail to King Peak, 1 mi. N of road terminus of Horse Mtn. to King Peak Rd., N of Shelter Cove 1067 Comment
  HSC45391  Carex buxbaumii Thomas W. Nelson, Jane P. Nelson 1978-7-2 4404 Humboldt Off FS 2S08 near Pine Mtn., road to Lost Lake 1463 Comment
  HSC96554  Carex buxbaumii Gordon Leppig 1997-6-19 448 Humboldt Big Lagoon County Park, Big Lagoon Bog 3 Comment
  RSA126089  Carex buxbaumii Joseph P. Tracy 1924-7-13 6724 Humboldt Big Lagoon 6 Comment
  HSC76385  Carex concinnoides L. P. Janeway 1982-6-20 13 Humboldt NE facing slope near ridgetop 1 mi. SE of Horse Mtn. along FS 6N36 1384 Comment
  CAS-BOT-BC34977  Carex densa Joseph Prince Tracy 1935-5-25 13855 Humboldt Fort Seward. 106 Comment
  HSC103329  Carex densa Thomas W. Nelson, Jane Nelson 1982-7-11 7116 Humboldt Along road from Hindley's cabin on McKeown Ranch to Anderson's Ford at Mad River Comment
  HSC38078  Carex densa Thomas W. Nelson, James Nelson 1976-5-30 2629 Humboldt McKeown Ranch, N of Dinsmore. Comment
  UC1103122  Carex densa Joseph P. Tracy 1937-5-31 15325 Humboldt Trinity River Valley at Willow Creek 152 Comment
  JEPS79839  Carex densa Joseph P. Tracy 1936-6-3 14847 Humboldt Trinity River Valley at Willow Creek Willow Creek; Trinity River Valley, Willow Creek 152 Comment
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Nov 1 2009
  UC562257  Carex densa Joseph P. Tracy 1936-6-3 14847 Humboldt Trinity River Valley at Willow Creek 152 Comment
  CAS-BOT-BC20079  Carex echinata Joseph Prince Tracy 1933-7-25 12845 Humboldt Northern Coast Ranges. Grouse Mountain. 1524 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
  HSC76840  Carex exsiccata L. P. Janeway 1982-8-7 114 Humboldt Dry Lagoon 3 Comment
  CAS-BOT-BC20012  Carex feta H. D. Ripley; R. C. Barneby 1945-6-16 6823 Humboldt NW of Harris. 883 Comment
  JEPS79842  Carex globosa Joseph P. Tracy 1929-6-3 8605 Humboldt Mouth of East Fork, Willow Creek Canyon Willow Creek Canyon; Northern Coast Ranges, Willow Creek Canyon 487 Comment
  UC1103076  Carex globosa Joseph P. Tracy 1933-6-9 12538 Humboldt Englewood North Coast Ranges 91 Comment
  JEPS25999  Carex gracilior Joseph P. Tracy 1936-5-29 14826 Humboldt on ridge e Orick; Gans Prairie 548 Comment
  SEINET7561246 Image available Carex harfordii Andrew L. Hipp 1999-5-31 456 Humboldt Alder Point, Alder Pt Road ca 3 mi S of Alder Pt. 503 Comment
  SEINET8068029 Image available Carex harfordii A. L. Hipp 1999-1 438 Humboldt Phillipsville-Edge of 101 (Redwood Hwy), big E-turn just S. of the Miranda exit. Comment
  CAS-BOT-BC21754  Carex hassei Joseph Prince Tracy 1941-5-11 16868 Humboldt Big Lagoon. 152 Comment
  CAS-BOT-BC21755  Carex hassei Joseph Prince Tracy 1927-4-23 7917 Humboldt Big Lagoon. 6 Comment
  UCD140376  Carex hendersonii Victor Duran 1933-5-12 3412 Humboldt Bull Creek, at South Fork of the Eel River. Comment
  HSC98937  Carex interior Cara Witte 2008-7-30 971 Humboldt Forest Service Road 5N04. 1/4 mile east of intersection with Forest Service Road 4N70. 1583 Comment
  CHSC107129  Carex laeviculmis R. E. Brainerd 2009-7-23 1567 Humboldt North Coast Range, South Fork Mountain; 19.6 miles west-northwest of Hayfork. UTM Zone 10 453477E 4494945N. 1661 Comment
  UC249733  Carex lenticularis var. limnophila Joseph P. Tracy 1923-6-17 6275 Humboldt Northern Coast Region, Big Lagoon Big Lagoon; Northern Coast Region, Big Lagoon 6 Comment
  HSC48393  Carex leptopoda Brad Klipfel 1973-6-10 151 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  JEPS79850  Carex mendocinensis Joseph P. Tracy 1935-7-14 14086 Humboldt North Coast Ranges, Grouse Mountain Grouse Mountain; North Coast Ranges, Grouse Mountain 1524 Comment
  UC562725  Carex mendocinensis Joseph P. Tracy 1935-7-14 14086 Humboldt North Coast Ranges. Grouse Mountain. Comment
  HSC45437  Carex microptera Thomas W. Nelson, Jane P. Nelson 1978-7-2 4401 Humboldt Off FS 2S08 near Pine Mtn., road to Lost Lake 1463 Comment
  UC1116265  Carex multicaulis Joseph P. Tracy 1942-6-2 17105 Humboldt Valley of South Yager Creek 762 Comment
  HSC102227  Carex multicostata M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-4 1148 Humboldt Along trail (abandoned Road 6E74) from Andy's Camp to Patterson Meadows 1563 Comment
  CHSC40158  Carex nudata L. P. Janeway 1983-6-22 322 Humboldt Along the north edge of Mad River, near jct of North Bank Road and Hunts Drive. 4 Comment
  HSC48135  Carex nudata D. H. Norris 1971-7-17 19598 Humboldt Along Redwood House Rd., 4 mi. W of intersection with Kneeland-Bridgeville Rd. Comment
  SEINET3905214  Carex nudata Thomas Nelson 1977-5-30 3407 Humboldt In Mad River at Anderson's Ford north of Dinsmore on the McKeown Ranch.; 0 610 Comment
  CAS-BOT-BC119383  Carex obnupta David Daniels Keck 1938-8-5 4770 Humboldt Big Lagoon Comment
  CHSC2106  Carex obnupta M. Anthony 1937-5-15 Humboldt Humboldt State College. Comment
  SEINET10711645  Carex obnupta Robert F. Thorne 1965-8-7 Thorne 35199 Humboldt Big Lagoon; elev. c. 5 ft.; at edge of bog at S end of lagoon. Comment
  SEINET10711656  Carex obnupta David Castaner 1984-5-28 Castaner 8064 Humboldt Patrick State Park. Redwood Forest Area. Comment
  UC1026440  Carex obnupta Frank W. Peirson 1941-7-28 13108 Humboldt Patrick Pt. State Park Comment
  UC562241  Carex obnupta Joseph P. Tracy 1936-6-9 14892 Humboldt 3 mi e Cape Mendocino; Cape Ridge 243 Comment
  UC562651  Carex pachycarpa Joseph P. Tracy Jul 16 1930-Jul 19 1930 9039 Humboldt along summit near Blake lookout; Northern Coast Ranges, South Fork Mountain 1737 Comment
  SEINET7570348 Image available Carex pachystachya Ray Tallent 1987-8-11 896 Humboldt Six Rivers National Forest, roadside S of Horse Mtn. 1390 Comment
  UC302099  Carex pachystachya Joseph P. Tracy 1911-7-7 3390 Humboldt three mi nw junction of Willow Creek with Trinity River (at meadows on mt. side, near Beebe's Ranch); Northern Coast Ranges; NW of junction of Willow Creek w/ Trinity River, Humboldt Co., near Beebe's Ranch. 914 Comment
  UC562643  Carex pachystachya Joseph P. Tracy 1932-7-14 10548 Humboldt Trinity Summit, Corral Prairie Corral Prairie; Trinity Summit, Corral Prairie 1584 Comment
  CAS-BOT-BC119166  Carex pansa Joseph Prince Tracy 1935-7-18 14104 Humboldt Low sandy growth at edge of sald marsh next to Table Bluff. 3 Comment
  SEINET7572538 Image available Carex preslii Ray Tallent 1987-8-11 895 Humboldt Six Rivers National Forest, road S of Horse Mtn. 1390 Comment
  RSA88833  Carex subbracteata Alice Eastwood, John Thomas Howell 1937-6-23 4808 Humboldt Little Van Duzen River. Comment
  SEINET200796  Carex subbracteata J. P. Tracy 1928-6-24 8465 Humboldt Valley of S Yager Creek 0 Comment
  SEINET4290245 Image available Carex subbracteata Unknown 2009-1 24497 Humboldt Outer North Coast Range (NCoRo), between Lord-Ellis and Berry summits. Above Chezen Road, at junction with Route 299. Comment
  CAS-BOT-BC116909  Carex subbracteata var. subbracteata Alice Eastwood; John Thomas Howell 1937-6-22 4737 Humboldt Near Alder Point Comment
  CAS-BOT-BC116682  Carex subfusca Joseph Prince Tracy 1928-6-17 8450 Humboldt Trinity River Valley, at Willow Creek. 152 Comment
  SEINET3910196  Carex tracyi Thomas W. Nelson, Jane P. Nelson 1978-6-10 4418 Humboldt Eureka Quad. Second growth redwood forest behind Eureka Seventh Day Advent Church on F St.; 0 61 Comment
  CHSC104060  Carex tumulicola Peter F. Zika 2009-6-15 24495 Humboldt Outer North Coast Range. Above Route 299, 2.3 road miles W of junction with Chezen Road between Lord-Ellis and Berry summits. 680 Comment
  UC1103116  Carex tumulicola Joseph P. Tracy 1924-9-14 6876 1/2 Humboldt Butter Valley Northern Caost Ranges 152 Comment
  POM248622  Carex unilateralis Joseph P. Tracy 1937-8-7 15618 Humboldt Bald Mt. 915 Comment
  SEINET10751219  Carex unilateralis Joseph P. Tracy 1930-6-15 Tracy 8756 Humboldt Dobbyn Creek, bordering a pond. 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
  UC1103610  Carex utriculata Joseph P. Tracy 1937-8-12 15636 Humboldt Snow Camp 1402 Comment
  SEINET10745035  Castilleja ambigua subsp. humboldtiensis Philip A. Munz 1925-6-20 Munz 9890 Humboldt Eureka, partly dry saline flats Comment
  JEPS26533  Castilleja applegatei subsp. martinii Joseph P. Tracy 1927-5-14 8001 Humboldt near South Fork; Trinity River Valley 182 Comment
  HSC98627  Castilleja applegatei subsp. pinetorum Cara Witte 2008-7-11 875 Humboldt Spike Buck Mountain. Forest Service Road 5N18. 0.5 mi. from intersection with National Forest 1. 1589 Comment
  SD62425  Castilleja applegatei subsp. pinetorum Lincoln Constance, Elwood Molseed, Robert Ornduff 1961-7-19 3701 Humboldt Open ridge easr of Hinkey Summit. Santa Rosa Range, Humboldt National Forest Comment
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Mar 3 2014
  HSC20838  Castilleja attenuata R. T. Forester 1963-5-6 43 Humboldt 1 mi. S of Fairhaven on Samoa Rd. Comment
  HSC20881  Castilleja exserta subsp. latifolia J. W. Johnson 1961-9-6 1106 Humboldt Arcata, Christenson Farm, Samoa Peninsula Comment
  HSC24384  Castilleja pruinosa J. O. Sawyer 1970-6-24 2220 Humboldt Ridge on Big Hill Rd., E of Hoopa 1189 Comment
  JEPS25752  Castilleja rubicundula subsp. lithospermoides Joseph P. Tracy 1908-6 2849 Humboldt opposite Buck Mountain (valley of Van Duzen River); Northern Coast Ranges 762 Comment
  RSA758814  Ceanothus arcuatus D. H. Wilken, E. L. Painter 2007-6-4 16738 Humboldt Titlow Road, 1.3 linear km southwest of summit of Horse Mountain, west of head of Horse Mountain Creek. 1325 Comment
  SDSU19193  Ceanothus cordulatus Michael G. Simpson, Michael Mesler and Michael Mayer 2008-5-27 3012 Humboldt Six Rivers National Forest. From Hwy 299, take Titlow Hill Road (at Berry Summit) ca. 7.5 miles south, west 0.2 miles to Cold Spring. Ca. 0.3 mile south-southeast of Cold Spring. Ca. 3.3 aerial miles south-southeast of Horse Mtn. Radio Tower. 1426 Comment
  CDA36149  Ceanothus cuneatus CDFA Staff Jun 1977 Humboldt Berry Summit. 0 Comment
  UC1193330  Ceanothus cuneatus var. cuneatus K. Cuff Sep 1950 125 Humboldt 6 mi nw Garberville (rocky ridgecrest of Bear Butte); Quad. 29C1 762 Comment
  UC728641  Ceanothus foliosus Milo S. Baker 1931-5-17 5192 Humboldt e Occidental (27.5 mi south of Garberville on hwy.) Comment
  HSC37594  Ceanothus foliosus var. foliosus R. Sutherland 1975-5-17 0 .17575 Humboldt Along Horse Mtn. Rd 518 Comment
  CAS-BOT-BC50043  Ceanothus incanus M. S. Jussel 1931-5-2 114 Humboldt Garberville Comment
  RSA167407  Ceanothus incanus Joseph P. Tracy 1950-8-4 19249 Humboldt NW slope of the peak, Grasshopper Peak, in Bull Creek State Park at head of Canoe Creek Comment
  UC198614  Ceanothus incanus Joseph P. Tracy 1916-6-21 4706 Humboldt Burr Creek Northern Coast Ranges 914 Comment
  CAS-BOT-BC63679  Ceanothus integerrimus L. B. Kildale 1927-7-3 3635 Humboldt Willow Creek Flat. 152 Comment
  HSC59445  Ceanothus integerrimus Kenneth Clark 1979-5-15 305 Humboldt Tish Tang State Campground, 11 mi N of Willow Creek on Hwy. 96 Comment
  RSA399896  Ceanothus integerrimus M. S. Jussel 1931-5-2 s.n. Humboldt near Garberville Comment
  SEINET3836772 Image available Ceanothus integerrimus Bassett Maguire, Ruth Maguire, C. B. Maguire 1934-6-7 15325 Humboldt Ten miles South of Squaw Creek Comment
  CDA36164  Ceanothus integerrimus var. macrothyrsus CDFA Staff 1977-6-21 Humboldt Willow Creek. 0 Comment
  CAS-BOT-BC51144  Ceanothus lemmonii D. Haskamp; E. Sonnenblick; M. Taft 1995-4-23 38 Humboldt On rd. A16 NE of Basin Gulch campground 11 miles. On west side of road 731 Comment
  CAS-BOT-BC51145  Ceanothus lemmonii Joseph P. Tracy 1929-4-28 8551 Humboldt Trinity River Valley, at Willow Creek 152 Comment
  HSC18380  Ceanothus oliganthus var. sorediatus P. J. Zinke 1950-10-4 166 Humboldt 2 mi E of Honeydew 1829 Comment
  HSC37604  Ceanothus oliganthus var. sorediatus R. Sutherland 1975-7-11 6 .11775 Humboldt Along county rd. 259 Comment
  CAS-BOT-BC51217  Ceanothus parryi M. S. Jussel 1931-5-2 s.n. Humboldt 20 miles N. of Garberville Comment
  HSC43179  Ceanothus parryi R. Sutherland 1975-6-19 2 .19675 Humboldt 2 mi NE of Briceland 178 Comment
  HSC43212  Ceanothus parryi R. Sutherland 1975-4-13 0 .13475 Humboldt 2 mi NE of Briceland along county rd. 183 Comment
  BLMAR284  Ceanothus thyrsiflorus Jennifer Anthony-Wheeler 1999-5-28 284 Humboldt King range, growing on strawberry Rock grazing allotment 304 Comment
  CAS-BOT-BC52218  Ceanothus thyrsiflorus Doris K. Kildale 1926-8-29 2598 Humboldt Blue Slide on the Van Duzen River Comment
  CAS-BOT-BC52954  Ceanothus thyrsiflorus Doris K. Kildale 1927-5-14 3289 Humboldt Big Lagoon - coast terrace Comment
  CAS-BOT-BC52996  Ceanothus thyrsiflorus C. V. Piper 1921-5-22 s.n. Humboldt Eureka Comment
  HSC18330  Ceanothus thyrsiflorus H. E. Parks Mar 1934 4828 Humboldt Spruce Cove, Trinidad Comment
  POM118613  Ceanothus thyrsiflorus Marcus E. Jones 1924-4-26 s.n. Humboldt Eureka. Comment
  UC1193281  Ceanothus thyrsiflorus K. Cuff 124 Humboldt 8 mi e Petrolia; Quad. 28A3 60 Comment
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Jul 25 2009
  HSC18355  Ceanothus velutinus Francis Winter 1960-4-24 Humboldt 2 mi. SE of Schoolhouse Peak 838 Comment
  HSC90080  Ceanothus velutinus Grefsrud, Reed, Rohmer 1990-4-28 83 Humboldt 200 yds E of Willow Creek proper 220 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
  UC302186  Centaurea solstitialis Joseph P. Tracy 1926-8-22 7772 Humboldt McClellan Mountain North Coast Ranges, McClellan Mountain 609 Comment
  UC176992  Centaurium muehlenbergii Joseph P. Tracy 1912-7-23 3798 Humboldt 3 mi above mouth of South Fork of Eel River (along South Fork of Eel River); Northern Coast Ranges, South Fork of Eel River 30 Comment
  HSC104291  Cephalanthera austiniae Samantha E. Andres 2016-5-6 23 Humboldt About 4 mi. W on Mattole Rd. from the South Fork/Honeydew exit, above Harper Creek 128 Comment
  HSC74322  Cephalanthera austiniae Gail Newton 1980-7-20 1627 Humboldt Near Bell Swamps 1426 Comment
  HSC99829  Cephalanthera austiniae T. Jimerson, J. Pageau 1979-7-31 708 Humboldt Near Whiting Ridge. Close to town of Hyampom 1204 Comment
  UC13533  Cephalanthera austiniae Chesnut and Drew 1888-7-9 Humboldt Kneeland Comment
  HSC99499  Cephalanthera austiniae K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-22 159 Humboldt Near North Trinity Mtn, along Forest Service Rd 10NO2, between two forks of Domingo Creek 1433 Comment
  HSC4096  Cerastium arvense Doris K. Kildale 1925-6-28 814 Humboldt Kneeland Prairie Comment
  SBBG1996  Cerastium arvense H. and M. Dearing 1933-5-17 239 Humboldt N of Arcata Comment
  UC465826  Cerastium arvense Harley P. Chandler June, 1901 1354 Humboldt Hupa Indian Reservation North Coast Ranges, Hupa Valley, Hupa Indian Reservation 152 Comment
  CAS-BOT-BC384998  Cerastium fontanum Carl B. Wolf 1927-8-22 797 Humboldt Big Lagoon 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
  UC668111  Cerastium glomeratum Joseph P. Tracy 1927-3-27 7849 Humboldt Trinity R. Valley at Willow Creek; Trinity R. Valley, Willow Creek 152 Comment
  CAS-BOT-BC276488  Chaenactis douglasii var. douglasii Joseph P. Tracy 1932-7-12 10462 Humboldt Trinity Summit. Head of Brett Hole 1828 Comment
  CAS-BOT-BC85653  Chamaecyparis lawsoniana Joseph P. Tracy 1927-3-27 7864 Humboldt Willow Creek Canyon 762 Comment
  HSC1193  Chamaecyparis lawsoniana J. C. Reppas 1963-3-2 50 Humboldt 820 Fickle Hill Rd. Comment
  HSC72829  Chamaecyparis lawsoniana Gail Newton 1980-6-16 195 Humboldt Near Onion Mtn. 1280 Comment
  RSA13571  Chamaecyparis lawsoniana Joseph P. Tracy 1927-3-27 7864 Humboldt Willow Creek Canyon 762 Comment
  UC1198974  Chamaesyce serpyllifolia Joseph P. Tracy 1931-10-12 9728 Humboldt Blue Slide Northern Coast Ranges, Van Duzen River 91 Comment
  UC1198975  Chamaesyce serpyllifolia Joseph P. Tracy 1925-11-1 7299 Humboldt along Eel River (from South Fork to Scotia, Shively); Northern Coast Ranges 60 Comment
  UC275332  Chamaesyce serpyllifolia Joseph P. Tracy 1923-9-16 6555 Humboldt near South Fork; Northern Coast Ranges, Trinity River Valley 182 Comment
  UCD103644  Chamerion angustifolium subsp. circumvagum E. B. Alexander 1959-7-23 43 Humboldt California Forest and Range Experiment Station. 1 mile NW of Trinidad. Comment
  UC1197021  Chamerion angustifolium subsp. circumvagum Mrs. Laura P. Mahan 1928-6-24 Humboldt 3 mi se Scotia; Eel River 30 Comment
  HSC98042  Chamomilla suaveolens Cara Witte 2007-7-17 533 Humboldt Intersection of 6N01B and National Forest 1. 1427 Comment
  HSC55088  Cheilanthes gracillima G. L. Clifton, Griswold 1979-7-31 11762 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa. 1845 Comment
  HSC74745  Cheilanthes gracillima Gail Newton 1981-8-7 2426 Humboldt Near Bug Creek Butte 1244 Comment
  HSC99676  Cheilanthes gracillima Walter Overton, Marvin Butler 1979-7-25 9894 Humboldt Near Sims Mtn., close to the town of Willow Creek 1295 Comment
  RSA478451  Chenopodium botrys M. S. Jussel 1931-5-2 s.n. Humboldt Garberville. Comment
  RSA273388  Chenopodium botrys Thomas W. Nelson, Jane P. Nelson 1977-9-3 3724 Humboldt Along Forest Service Rd. to north of Alder Springs. 1524 Comment
  SD40327  Chenopodium strictum var. glaucophyllum Edith A. Purer 1932-7-30 4670 Humboldt South of Orick Comment
  CAS-BOT-BC451387  Chimaphila menziesii T. Worley; M. Mill; F. Rosenthal 1985-5-10 56 Humboldt Horse Mountain Rd., approx. 8 miles S of Hwy. 299 1143 Comment
  HSC54228  Chimaphila umbellata Griswold, Butler 1979-7-12 7294 Humboldt Near Lone Pine Ridge, close to the town of Willow Creek. 1478 Comment
  HSC54590  Chimaphila umbellata Overton, Butler 1979-7-24 9658 Humboldt Near Friday Camp, close to the town of Willow Creek. 1250 Comment
  HSC55158  Chimaphila umbellata Gilbert Muth 1979-8-1 12119 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1677 Comment
  UC1197594  Chimaphila umbellata Joseph P. Tracy 1911-7-7 3421 Humboldt ridge n. of Willow Creek (between Willow & Campbell Creeks, Brannan Mt, near summit); Northern Coast Ranges, Brannan Mt. 1219 Comment
  UC412888  Chimaphila umbellata Mrs. M. H. Manning 1900-1 Humboldt near Hupa Comment
  CAS-BOT-BC451499  Chimaphila umbellata Carl B. Wolf 1937-8-12 9209 Humboldt North Coast Range, South Fork Mt., 0.6 mi S of Blake Lookout 1676 Comment
  JEPS66585  Chimaphila umbellata Lincoln Constance 1934-6-14 873 Humboldt 2 mi. from mouth of Squaw Creek (on rd. to Grasshopper Peak); Bull Creek Region, S. Fork Eel R. 304 Comment
  UC1197595  Chimaphila umbellata Joseph P. Tracy 1916-6-25 4741 Humboldt ridge between Little River and Redwood Creek; Northern Coast Ranges 304 Comment
  UC1197599  Chimaphila umbellata Joseph P. Tracy 1934-8-29 13634 Humboldt forest near McKay Camp (S. Fork Mt.); Northern Coast Ranges, S. Fork Mt. 1676 Comment
  UC21656  Chimaphila umbellata Bolander June 1867 6543 Humboldt Parker's Station, Eureka Trail Comment
  HSC100553  Chlorogalum pomeridianum Carl C. Marshall Jul 1886 260 Humboldt Throughout the Coast Range, Humboldt Bay. Comment
  UC1073189  Chlorogalum pomeridianum var. pomeridianum George B. Rossbach 1955-6-10 613 Humboldt route 101 two mi n Stephens Redwood Grove; south branch of Eel River Comment
  HSC100429  Chrysanthemum leucanthemum Carl C. Marshall Jun 1885 130 Humboldt Jarnigan's and mouth of Mad River. Comment
  UC1198646  Cicendia quadrangularis Joseph P. Tracy 1903-5-22 1887 Humboldt Alder Point Northern Coast Ranges (on Eel River) 152 Comment
  UCD59786  Cinna latifolia Joseph P. Tracy 1936-8-7 15087 Humboldt Trinity Summit, in fir woods, head of Little Hors-Linto Creek. 1371 Comment
  HSC98713  Circaea alpina subsp. pacifica Cara Witte 2007-7-20 567 Humboldt Board Camp Butte. Forest Serivce Road 4E27. 1460 Comment
  CDA20043  Cirsium arvense E. Finley 2002-8-8 PDR 1035509 Humboldt Northwestern California; 0.7 mi S of Del Norte county on Hwy 101 between MM 136.36 and MM 136.38. 0 Comment
  JEPS79874  Cirsium arvense Joseph P. Tracy 1933-8-13 12963 Humboldt Arcata Bottom 15 Comment
  SBBG25852  Cirsium arvense D. Myrick 1978-8-16 Humboldt Prairie Crk Redwoods State Park 152 Comment
  JEPS59310  Cirsium brevistylum W. L. Jepson 1936-8-15 17900 Humboldt 2 mi e Carlotta Comment
  CDA1218  Cirsium douglasii var. douglasii T. C. Fuller 1962-8-6 9352 Humboldt Hwy 299, 3.4 miles east of Berry Summit. Comment
  JEPS59231  Cirsium occidentale var. candidissimum W. L. Jepson 1902-8-5 2148 Humboldt Eltersburg to Briceland Comment
  UC204833  Cirsium occidentale var. venustum Joseph P. Tracy 1918-7-3 4988 Humboldt Wilder Ridge Northern Coast Ranges, Wilder Ridge 762 Comment
  HSC5401  Cirsium occidentale var. venustum D. G. Hauger 1967-7-15 27 Humboldt On Lone Star Ranch 610 Comment
  CAS-BOT-BC288712  Cirsium remotifolium Joseph P. Tracy 1930-7-21 8887 Humboldt Bear River RIdge Comment
  HSC68157  Cirsium vulgare J. P. Smith 1971-10-6 4972 Humboldt End of Murray Rd. in McKinleyville. Comment
  RSA418966  Cirsium vulgare Lyman Benson 1928-7-12 417 Humboldt Weott Ranger Station, Seaward N. Coast Mt. Range, South Fork Eel River Watershed. 61 Comment
  CAS-BOT-BC228801  Cistanthe umbellata Doris K. Kildale 1925-8-17 1227 Humboldt Trinity Summit along summit near Ranger Station 1828 Comment
  UCR123961  Clarkia affinis George K. Helmkamp, E. A. Helmkamp 2001-7-8 6967 Humboldt North coast hills., Calif. Hwy 36, 2.2 mi west of Dinsmore 732 Comment
  UC183664  Clarkia amoena Joseph P. Tracy 1912-7-21 3758 Humboldt Alton Northern Coast Region 30 Comment
  HSC16232  Clarkia amoena R. T. Paul 1967-7-20 4 Humboldt N of Capetown 152 Comment
  UCD104025  Clarkia amoena K. Esau 1934-5-7 s.n. Humboldt Above Fort Seward. 457 Comment
  CAS-BOT-BC160951  Clarkia amoena subsp. amoena Doris K. Kildale 1928-6-24 5291 Humboldt Horse Mountain cut-off, near junction of Willow Creek road 853 Comment
  CAS-BOT-BC164180  Clarkia concinna Harley P. Chandler 1901-6-1 1325 Humboldt Hupa Indian Reservation 152 Comment
  UC144067  Clarkia concinna subsp. concinna Joseph P. Tracy 1908-6 2742 Humboldt nw slope Buck Mountain; Northern Coast Ranges 762 Comment
  UC1143187  Clarkia concinna subsp. concinna H. and M. Lewis 1947-6-13 419 Humboldt 1.9 mi w Van Duzen River Bridge (4-129) (Hwy. 36) Comment
  UC668286  Clarkia rhomboidea Joseph P. Tracy 1937-7-24 15527 Humboldt 2 mi se Devil's Hole; Trinity Summit 1524 Comment
  JEPS127651  Claytonia Jurriaan M. de Vos 2014-7-1 301 Humboldt Along Bald Hills Road, near Dolason trail head parking. Comment
  HSC55143  Claytonia cordifolia G. L. Clifton, Terry Griswold 1979-8-1 12036 Humboldt Near N Trinity Mtn., close to the town of Hoopa. 1798 Comment
  HSC73821  Claytonia lanceolata M. A. Baker 1980-7-19 3035 Humboldt Near Bret Hole. 1814 Comment
  SEINET6903113  Claytonia perfoliata Wanda P. Vestal, A. G. Vestal 1937-6-23 s.n. Humboldt Saddle near east end of Bald Hills, southeast of Orick. Comment
  CAS-BOT-BC439933  Claytonia perfoliata subsp. mexicana Doris K. Kildale 1926-3-21 1583 Humboldt Kneeland Prairie - summit 853 Comment
  UC673001  Claytonia perfoliata subsp. mexicana Joseph P. Tracy 1937-6-27 15380 Humboldt w of mouth of South Fork of Trinity River (Four-Mile Creek); Four-Mile Creek 670 Comment
  HSC78959  Claytonia perfoliata subsp. perfoliata L. P. Janeway, K. Berg 1984-4-11 726 Humboldt N Spit of Humboldt Bay, turnout along Samoa Rd., across from boat ramp just N of Coast Guard Station 3 Comment
  HSC101983  Claytonia rubra M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-12 880 Humboldt Patterson Meadows 1566 Comment
  UC203566  Claytonia rubra subsp. depressa Joseph P. Tracy 1918-4-7 4861 Humboldt mouth of Strawberry Creek Northern Coast Ranges, Dows Prairie (Dows Prairie) 6 Comment
  HSC98515  Claytonia rubra subsp. rubra Cara Witte 2007-5-8 6 Humboldt Cold Spring. 1/2 mile south of Titlow Hill. 1410 Comment
  UC1368488  Claytonia rubra subsp. rubra R. K. Gierisch and D. H. Esplin 1969-7-1 3534 Humboldt Grouse Mtn.; Six Rivers Forest/Expt. Area Comment
  UC672998  Claytonia rubra subsp. rubra Joseph P. Tracy 1933-6-13 12579 Humboldt near summit road from Hoopa westward to Bair's; Hoopa Mountain 1066 Comment
  HSC73383  Claytonia sibirica Robert Kirkpatrick, Doug Renwick 1981-4-24 161 Humboldt Jolly Giant Creek behind HSU Comment
  SEINET9315908  Claytonia sibirica Unknown 1932-7-14 10536 Humboldt Trinity Summit Comment
  UC672991  Claytonia sibirica Joseph P. Tracy 1933-5-20 12273 Humboldt near Cape Mendocino (Cape Ridge); Cape Ridge 304 Comment
  UC1196208  Clematis ligusticifolia Joseph P. Tracy 1937-7-11 15424 Humboldt along river Garberville 152 Comment
  CHSC3493  Clintonia andrewsiana Roger Jaegel 1966-5-8 151 Humboldt Located twenty-five miles southeast of Eureka, in Richardson's Grove Redwood Park. Comment
  HSC15451  Clintonia andrewsiana E. W. Styskel 1963-5-19 52 Humboldt 3 mi. SE of Korbel on Snow Camp Rd. 290 Comment
  HSC53895  Clintonia uniflora Griswold, Butler 1979-7-11 6400 Humboldt Near Snow Camp Mtn., close to the town of Willow Creek. 1320 Comment
  HSC72683  Clintonia uniflora J. P. Smith 1977-7-3 9265 Humboldt Onion Lake Comment
  UC1103460  Clintonia uniflora Joseph P. Tracy 1926-6-6 7582 Humboldt Hoopa Mountain, near summit on road w from Hoopa to Bair's Hoopa Mountain; Northern Coast Ranges, Hoopa Mountain 1066 Comment
  CDA3701  Coincya monensis Jim Belsher 1997-2-13 2 Humboldt Lot ESE of the Manila Community Services District sewage pump station Comment
  UCD114621  Coincya monensis subsp. recurvata Jim Belsher 1997-2-13 1 Humboldt collected in the lot East Southeast of Manila Community Services District sewage pump station. 6 Comment
  JEPS115074  Coincya monensis subsp. recurvata Andrea Pickart 2009-2-20 729 Humboldt Manila Dunes; End of Lupine Ave. 15 Comment
  JEPS7342  Collinsia heterophylla Joseph P. Tracy 1927-5-30 8089 Humboldt Vicinity of Garberville 121 Comment
  UC179949  Collinsia heterophylla Joseph P. Tracy 1914-5-14 4464 Humboldt Northern Coast Ranges, Fort Seward Fort Seward; Northern Coast Ranges, Fort Seward 121 Comment
  UC582467  Collinsia heterophylla Joseph P. Tracy 1927-5-30 8089 Humboldt vicinity of Garberville 121 Comment
  CAS-BOT-BC412799  Collinsia linearis David D. Keck 1948-7-2 5999 Humboldt Ridge east of Redwood Creek on road to Willow Creek. On US Route 299 609 Comment
  JEPS13364  Collinsia linearis Harold E. Parks 1934-6-14 4789 Humboldt ca 11 mi air-line ssw Willow Creek (Horse Mtn); Horse Mtn. 1432 Comment
  UC582463  Collinsia parviflora Joseph P. Tracy Jul 16 1930-Jul 19 1930 8959 Humboldt near McKay Camp (Northern Coast Ranges, South Fork Mountain); Northern Coast Ranges, South Fork Mountain 1676 Comment
  HSC48992  Collinsia rattanii M. A. Baker 1979-5-23 757 Humboldt Comment
  HSC48850  Collomia grandiflora Brad Klipfel 1973-7-15 208 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  UC1197856  Collomia grandiflora Joseph P. Tracy 1933-8-30 13051 Humboldt Grouse Mountain North Coast Ranges 1524 Comment
  UC60862  Collomia heterophylla Harley P. Chandler June, 1901 1401 Humboldt Klamath River North Coast Ranges 213 Comment
  SEINET3479162  Collomia heterophylla S. K. Harris 1942-6-12 Humboldt East of Birds Nest (added later by Bill Schmidt), East of Birds Nest (added later by Bill Schmidt), 4 miles east, Fickle Hill Road to Boynton Prairie Comment
  HSC97474  Collomia tinctoria C. Witte 2007-5-23 88 Humboldt Approximately 2 miles from intersection with 4N70 (Grouse Mountain Lookout Road) on 4N32. 1395 Comment
  UC1197861  Collomia tracyi Joseph P. Tracy 1930-6-23 9130 Humboldt on hillside of disintegrated rock Northern Coast Ranges, Horse Mountain 1432 Comment
  CAS-BOT-BC180241  Comandra umbellata subsp. californica Doris K. Kildale 1926-5-2 1867 Humboldt Willow Brook, rocky terrace on Trinity River 152 Comment
  UC1222614  Conium maculatum Joseph P. Tracy 1950-6-8 18768 Humboldt near Petrolia (Hills between town and ocean) Comment
  JEPS64347  Corallorhiza maculata W. L. Jepson 1902-6-28 1947 Humboldt Hupa Rd Green Point Ranch (ridge) 914 Comment
  UC56317  Corallorhiza maculata Joseph Burtt Davy 1899-6-11 5421 Humboldt Hubbard's to Elk Prairie Comment
  SBBG1153  Corallorhiza mertensiana H. and M. Dearing 1939-7-25 3709 Humboldt road to Blakes Lookout 1524 Comment
  UC13532  Corallorhiza mertensiana Chesnut and Drew 1888-7-9 Humboldt Kneeland Comment
  HSC63188  Corallorhiza mertensiana M. A. Baker 1979-6-8 805 Humboldt 1.5 km. N of Gan's Prairie along Bald Hills Road Comment
  UC1196447  Corallorhiza mertensiana Joseph P. Tracy 1921-5-30 5499 Humboldt near Lawrence Creek; Northern Coast Ranges, Kneeland Prairie 762 Comment
  HSC37701  Corallorhiza striata A. Montalvo, J. D. Ackerman 1976-5-16 756 Humboldt 0.25 mi. E of State Hwy. 299 on Chezem Rd., W of Redwood Creek Valley Comment
  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
  POM21204  Cordylanthus pilosus subsp. pilosus L. R. Abrams 1916-7-10 5964 Humboldt Between Harris and Alder Pt. Comment
  CAS-BOT-BC101145  Corethrogyne filaginifolia Joseph P. Tracy 1936-8-17 15157 Humboldt Arcata Bottom 15 Comment
  UC169038  Corethrogyne filaginifolia Joseph P. Tracy 1912-7-21 3773 Humboldt Alton Northern Coast Region 30 Comment
  UC604617  Corethrogyne filaginifolia Joseph P. Tracy 1938-7-15 16059 Humboldt at Bucksport; Eureka 6 Comment
  RSA125370  Corethrogyne filaginifolia var. californica Peter H. Raven, R. Snow 1958-7-21 13658 Humboldt 2 miles north of Cape Mendocino Comment
  HSC6419  Cornus nuttallii J. Sandborg, F. Sandborg Jun 1968 32 Humboldt Bluff Creek near Notice Creek. 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
  UC1196906  Cornus sericea subsp. sericea Joseph P. Tracy 1900-9-10 967 Humboldt near Hydesville; Northern Coast Region 60 Comment
  UC183589  Cornus sericea subsp. sericea Joseph P. Tracy 1913-6-14 4125 Humboldt opposite Buck Mt. (Dinsmore's Ranch, Valley of Van Duzen R.); Northern Coast Ranges, Valley of Van Duzen R., Dinsmore's Ra 762 Comment
  UC249598  Cornus sericea subsp. sericea Joseph P. Tracy 1921-9-4 5949 Humboldt Trinity R. Valley near Willow Creek; Northern Coast Ranges, Trinity R. Valley 152 Comment
  UC502976  Cornus sericea subsp. sericea Joseph P. Tracy 1932-7-16 10629 Humboldt near Corral Prairie (Trinity Summit); Klamath Mts., Trinity Summit 1524 Comment
  UC502983  Cornus sericea subsp. sericea Joseph P. Tracy 1927-11-6 8392 Humboldt along Yager Creek Carlotta; Northern Coast Ranges 60 Comment
  CAS-BOT-BC210539  Cornus sessilis Doris K. Kildale 1927-7-3 3631 Humboldt Willow Creek Flat 152 Comment
  CAS-BOT-BC210541  Cornus sessilis Doris Kildale Gillespie 1941-4-16 s.n. Humboldt Unspecified Comment
  UC1052446  Cornus sessilis H. E. and S. T. Parks 1941-7-5 11492 Humboldt Hors Linto Creek Comment
  UC1167522  Cornus sessilis J. A. Delapp 1959-9-2 51 Humboldt 6 3/4 mi. n.-n.e. Schoolhouse Peak (near Big Prairie, V-Plot #81, <3N-95>); Quad. 11C-1 685 Comment
  UC249591  Cornus sessilis Joseph P. Tracy 1921-8-21 5945 Humboldt Three Creeks Northern Coast Ranges, Three Creeks 670 Comment
  RSA0019464  Cornus sessilis F. W. Peirson 1932-7-7 10262 Humboldt Willow Creek, a few miles above the town of that name. Comment
  UC668054  Coronopus didymus Joseph P. Tracy 1938-7-15 16067 Humboldt Mouth of Eel River 3 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
  HSC31386  Cortaderia selloana Ernest P. Camilleri 1974-11-20 Humboldt 2 mi. S of Arcata on Hwy. 101 Comment
  UC1222290  Corylus californica Joseph P. Tracy 1950-7-31 19226 Humboldt about 1 mi N of Friday's Camp (where road crosses side of Friday Ridge) Comment
  BLMAR230  Corylus cornuta subsp. californica Jennifer Anthony-Wheeler 1996-9-26 230 Humboldt King range, growing alng Bear creek between Wailaka & Nadelos campgrounds 548 Comment
  CAS-BOT-BC180313  Corylus cornuta subsp. californica L. B. Kildale 1926-9-5 2638 Humboldt Lasseck's Peaks - on trail between Canal Goat Camp and Red Peak 1676 Comment
  SBBG58030  Corylus cornuta subsp. californica R. Hartwell 1938-8-4 Humboldt Bull Crk Flat, hillside opposite the store Comment
  CAS-BOT-BC180310  Corylus cornuta subsp. californica L. B. Kildale 1928-2-19 4275 Humboldt 2 miles N of Redwood lighway Comment
  CAS-BOT-BC453358  Cotoneaster lacteus Arthur Lee Jacobson 2007-8-13 s.n. Humboldt North of Mill creek and W of Stagecoach Road, southern part of Trinidad Dtate Beach, (North coast, NCO) 50 Comment
  RSA34307  Cotula australis C. Kistner 1935-5-15 s.n. Humboldt Arcata Bottom. Comment
  POM289379  Cotula coronopifolia Lyman Benson 1928-7-10 435 Humboldt Clam Beach, Trinidad. 15 Comment
  SEINET3817856  Cotula coronopifolia Bassett Maguire, Ruth Maguire, C. B. Maguire 1934-6-9 15319 Humboldt Clam beach, 15 miles north Eureka Comment
  HSC78083  Crassula aquatica L. P. Janeway, K. Berg, Rudy Becking 1984-4-11 719 Humboldt N Spit of Humboldt Bay, BLM lands ('Coast Guard Reservation') 3 Comment
  UCD112977  Crataegus douglasii Louis C. Wheeler 1950-8-14 6780 Humboldt 5 mi. east of Shelter Core. Comment
  CAS-BOT-BC376515  Crepis Volney Rattan 1867-6-1 s.n. Humboldt Unspecified Comment
  CAS-BOT-BC290589  Crepis capillaris David D. Keck; J. Clausen 1935-6-16 3397 Humboldt Orick Comment
  JEPS89545  Crepis capillaris Dean W. Taylor 1991-9-15 12288 Humboldt along Hwy. 101 near mouth of Tom Creek (Big Lagoon); N. Coast Ranges, Big Lagoon 3 Comment
  CAS-BOT-BC290588  Crepis capillaris A. A. Heller 1923-7-9 13777 Humboldt About 5 miles east of Arcata along the road to Blue Lake Comment
  RSA246937  Crepis capillaris R. F. Thorne, Percy C. Everett 1965-8-8 35236 Humboldt N. edge of Eureka, E. of Hwy. 101 5 Comment
  RSA28654  Crepis capillaris H. E. Parks 1941-08 24189 Humboldt Roadsides and fields, vicinity of Trinidad Comment
  HSC98096  Crepis pleurocarpa Cara Witte 2007-6-20 310 Humboldt Forest Service Road 4N32. 1 mile south of intersection with 4N32E. 1386 Comment
  UC726368  Crepis vesicaria A. A. Heller 1923-7-9 13777 Humboldt near Blue Lake (5 mi from Arcata) Comment
  RSA285966  Crocosmia X crocosmiiflora T. C. Fuller 1968-7-30 17446 Humboldt Northwest corner of overpass of Highway 1 freeway to Garberville, 1 mile south of Fields Landing Comment
  HSC7973  Croton setiger H. D. Sumner 1959-7-14 Humboldt Between Hoopa and Redwood Creek 305 Comment
  HSC57202  Cryptantha affinis Griswold, Butler 1979-7-10 7108 Humboldt Near Board Camp Mtn., close to the town of Willow Creek. 1350 Comment
  UC1239662  Cryptantha affinis Joseph P. Tracy 1935-7-23 14130 Humboldt Corral Prairie Klamath Mountains, Trinity Summit 1524 Comment
  UC552253  Cryptantha intermedia Harold E. Parks and Joseph P. Tracy 1934-6-27 11060 Humboldt Grouse Mt. 1432 Comment
  POM126498  Cryptantha leiocarpa Joseph P. Tracy 1906-5-13 2457 Humboldt Sand Dunes of Ocean Beach at Humboldt Bay. Comment
Read comments
Jan 23 2011
  SEINET12280860  Cryptantha milobakeri J. P. Tracy, Harris, S. K. 1942-1 17221 Humboldt E side of Hoopa Valley, hillside Comment
  UC1222273  Cryptantha milobakeri Joseph P. Tracy with Dr. S. K. Harris 1942-6-23 17221 Humboldt e side Hoopa Valley (foot of Trinity Summit Road); Trinity Summit, Hoopa Valley Comment
  UC525598  Cryptantha torreyana Joseph P. Tracy 1930-6-15 8751 Humboldt near Bosworth's; Northern Coast Ranges, Larrabee Creek 457 Comment
  UC902066  Cuscuta occidentalis Joseph P. Tracy 1949-8-4 18410 Humboldt Mud Springs Trinity Summit 1341 Comment
  UC562478  Cuscuta subinclusa Joseph P. Tracy 1931-6-20 9586 Humboldt Alton, along Van Duzen River North Coast Ranges, Van Duzen River 30 Comment
  HSC3644  Cynoglossum grande Jack Rockwell 1962-5-4 47 Humboldt E side road, 0.5 mi. from Kneeland 457 Comment
  HSC74370  Cynoglossum occidentale M. A. Baker 1980-5-18 1289 Humboldt Near Black Mtn. 1006 Comment
  UC1222257  Cynoglossum occidentale Joseph P. Tracy 1948-8-15 18121 Humboldt on Ridge 2 mi. e. Grove's Prairie (Trinity Summit Rd. high point); Trinity Summit 1524 Comment
  CAS-BOT-BC190380  Cynosurus echinatus H. E. Parks; Joseph P. Tracy 1933-6-11 12542 Humboldt Northern Coast Ranges. Near Miranda. 152 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
  UCD60168  Cynosurus echinatus J. I. Mallory 1955-6-7 114 Humboldt North end of Luke Prairie. 350 Comment
  RSA91852  Cynosurus echinatus Joseph P. Tracy, H. E. Parks 1933-6-11 12542 Humboldt Near Miranda 152 Comment
  CAS-BOT-BC114625  Cyperus eragrostis Henry M. Pollard 1945-8-27 s.n. Humboldt Pond near Harley place. Comment
  UC668035  Cyperus eragrostis Joseph P. Tracy 1932-10-30 10897 Humboldt Alton to Fortuna (Eel R.); Eel R. 15 Comment
  CAS-BOT-BC114267  Cyperus esculentus Henry M. Pollard 1944-9-1 s.n. Humboldt Near Orleans. Comment
  UC196569  Cyperus squarrosus Joseph P. Tracy 1916-9-5 4773 Humboldt 4 mi. above mouth S. Fork Eel R.; Northern Coast Ranges, S. Fork Eel R. 60 Comment
  SEINET200683  Cypripedium montanum Joseph P. Tracy 1918-5-26 4937 Humboldt Redwood Creek at foot of Grouse Mt. 610 Comment
  RSA1438  Cytisus monspessulanus E. R. Johnson 1929-08 1434 Humboldt Eel River. 91 Comment
  HSC14669  Cytisus scoparius Francis Winter 1960-4-23 Humboldt 1.0 mi W of Angel Ranch on Korbel-Maple Creek Rd. 381 Comment
  HSC9539  Dactylis glomerata E. W. Styskel 1963-5-16 25 Humboldt 3.0 mi. SE of Korbel on Snow Camp Rd. 290 Comment
  UC552754  Danthonia intermedia Joseph P. Tracy 1934-7-18 13421 Humboldt Grouse Mountain North Coast Ranges 1524 Comment
  CAS-BOT-BC194369  Danthonia unispicata Joseph P. Tracy 1926-6-20 7611 Humboldt Horse Mountain 1402 Comment
  UCD61358  Danthonia unispicata A. H. Murphy 1951-6-25 73 Humboldt About 1 mile W of Board Camp Mtn. Ca. 16 miles NE of Bridgeville. Comment
  CAS-BOT-BC420364  Darmera peltata Doris K. Kildale 1926-5-2 1900 Humboldt Willow Creek Flat Comment
  SDSU2270  Daucus carota D. F. Howe 1959-8-4 2805 Humboldt Roadside 9 miles east of Arcata on #299. Comment
  BLMAR173  Daucus pusillus Donald Hazlett 1994-6-7 173 Humboldt King range, near horse Mt. Ridge rd 670 Comment
  HSC46960  Daucus pusillus J. P. Smith, Thomas W. Nelson 1977-6-30 9200 Humboldt Samoa Peninsula just E of the drag strip 6 Comment
  UC642294  Daucus pusillus Joseph P. Tracy 1936-6-8 14870 Humboldt bluffs facing ocean Trinidad 3 Comment
  HSC97517  Delphinium decorum Frances Reuss Harmon 2001-3-22 9 Humboldt Six Rivers National Forest, Grays Falls Campground Comment
  CHSC97961  Delphinium decorum subsp. tracyi Kaylea Eickhoff; Cara M. Witte 2005-6-15 12 Humboldt 14.1 miles south of Hwy. 299 on NF1, 0.25 miles NE of Grouse Mountain. Rocky serpentine outcrop. UTM 0444876, 4511301. 1400 Comment
  JEPS23882  Delphinium decorum subsp. tracyi Frank W. Gould 1939-5-30 837 Humboldt Near top of Horse Mountain (about 25 miles due east of Eureka) Comment
  UC503043  Delphinium decorum subsp. tracyi Joseph P. Tracy 1927-6-12 8160 Humboldt lower slopes Northern Coast Ranges, Horse Mountain 1219 Comment
  HSC44634  Delphinium decorum subsp. tracyi Diane L. Reed 1978-5-27 125 Humboldt 2.9 mi. from Hwy. 299 on Titlow Hill Rd., Horse Mtn. Comment
  CAS-BOT-BC10138  Delphinium menziesii Mrs. H. C. Cantelow 1941-4-26 s.n. Humboldt 10.3 miles SW of Ferndale on road to Cape Mendocino Comment
  HSC25012  Delphinium nudicaule Eugene Andreuccetti 1964-5-2 38 Humboldt 50 yds. from Ruby Creek on Hwy. 299 Comment
  HSC74627  Delphinium nudicaule M. A. Baker 1980-5-17 1251 Humboldt Near Le Perron Peak 1066 Comment
  CAS-BOT-BC9951  Delphinium nudicaule Doris K. Kildale 1927-3-20 2928 Humboldt Philipsville, south fork of Eel River Comment
  HSC48946  Delphinium nudicaule M. A. Baker 1979-5-1 700 Humboldt Along old bed of Bluff Creek Comment
  HSC89622  Delphinium nudicaule Pat Daly, Rudy Galindo 1988-3-12 5 Humboldt S Fork Trail of Trinity River, trailhead 12.4 mi. up S Fork Rd. from Hwy. 299 457 Comment
  JEPS23367  Delphinium nudicaule Joseph P. Tracy 1927-5-30 8084 Humboldt near Briceland; Northern Coast Ranges 243 Comment
  SD37307  Delphinium nudicaule Marie Cummings 1933-5-22 109 Humboldt Near Blockburg Comment
  RSA400116  Delphinium nuttallianum M. A. Baker 1979-6-27 933 Humboldt At head of Oregon Creek. Comment
  UCD131743  Delphinium trolliifolium Collector unknown 2013-4-23 s.n. Humboldt Near Ferndale. 914 Comment
  HSC36241  Delphinium trolliifolium John Rehling 1975-5-12 72 Humboldt 4 mi. S of Orick on Hwy. 101 Comment
  HSC99633  Delphinium trolliifolium Allan R. Marshall 1962-5-11 10 Humboldt 50 yds. in front of N side of Hwy. 299 610 Comment
  SEINET12099649  Delphinium trolliifolium J. P. Tracy 1951-1 s.n. Humboldt half way between Snow Camp and Twin Lakes Comment
  UC13983  Delphinium trolliifolium Chesnut and Drew 1888-7-9 Humboldt Campbell's Comment
  UC60241  Deschampsia cespitosa subsp. holciformis Schmidt Humboldt Humboldt Bay Comment
  CAS-BOT-BC201768  Deschampsia elongata J. O. Sawyer; R. J. Cole 1977-7-3 3019 Humboldt Environs of Mud Spring. Big Hill Road (F.S. 8N01) 1524 Comment
  CAS-BOT-BC201769  Deschampsia elongata H. E. Parks 1931-5-1 3646 a Humboldt Big Lagoon Comment
  HSC39715  Deschampsia elongata D. E. Anderson, J. P. Smith 1971-6-28 - 1263 Humboldt 2.5 mi. S of Blue Lake along the Mad River Comment
  HSC65115  Deschampsia elongata J. P. Smith 1973-5-26 6856 Humboldt Scotia Bluffs along the Eel River near Rio Dell Comment
  HSC71726  Deschampsia elongata M. A. Baker 1980-6-26 2463 Humboldt Near Sims Creek 610 Comment
  HSC9602  Deschampsia elongata True Hoyle 1967-7-24 29267 Humboldt Oscar Stapp Ranch near Showers Creek and Showers Pass Comment
  HSC99096  Deschampsia elongata Cara Witte 2008-7-14 889 Humboldt Horse Mountain Botanical Area. Forest Service Road 6N18. 1431 Comment
  UC1541537  Deschampsia elongata Harold E. Parks September 1928 172 Humboldt Big Lagoon Comment
  CHSC32856  Dicentra formosa Lora Anderson 1981-4-26 4 Humboldt Ca. 5 m n of Clam Bach Rd. 0.5 km e of Hwy. 101, 9.5 mi n of Arcata. 0 Comment
  HSC8361  Dicentra formosa D. K. Smith 1968-3-3 11 Humboldt West End Rd., 3 mi. from Hwy. 299 Comment
  RSA433572  Dicentra formosa subsp. formosa Christopher Davidson 1973-5-29 2200 Humboldt Ca. 2 mi S of Carlotta on St. Hwy 36 61 Comment
  UC35009  Dicentra uniflora J. Burtt Davy 1899-6-23 5816 Humboldt Trinity Summit summit; North Coast Ranges 2133 Comment
  UC843537  Dichelostemma Elizabeth Parsons Hawver Jun 1915 Humboldt Carlotta Comment
  JEPS5680  Dichelostemma X venustum Milo S. Baker 1923-7-20 29 Humboldt Head of South Fork of Yager Creek Comment
  SEINET6879153  Dichelostemma congestum Wanda P. Vestal, A. G. Vestal 1937-6-22 s.n. Humboldt Kneeland Prairie, about 4 miles southeast of Kneeland. Comment
  UC635734  Dichelostemma ida-maia H. L. Mason 1928-7-20 4909 Humboldt South Fork Mountain Comment
  HSC44728  Dichelostemma ida-maia Maralyn O'Meara 1972-6-8 79 Humboldt Along Bald Hills Rd, 16.4 mi. E of junction with Hwy. 101 Comment
  SJSU912  Dichelostemma ida-maia J. W. Tilden 1946-6-20 1008 Humboldt Bluff Creek c. 1.5 mi above junction with Klamath River Comment
  UC1222689  Dichelostemma ida-maia Joseph P. Tracy 1950-6-15 18777 Humboldt 5 mi n Harris (on the Overland Road); Mail Ridge Comment
  HSC35026  Dichelostemma multiflorum Thomas W. Nelson, James Nelson 1975-5-24 1848 Humboldt McKeown Ranch, N of Dinsmore. Comment
  UC15034  Dichelostemma multiflorum P. E. Goddard 1901-7 41 Humboldt Hupa Comment
  UC198610  Digitalis purpurea Joseph P. Tracy 1917-5-30 4790 Humboldt Dows Prairie Comment
  POM89789  Digitaria sanguinalis Joseph P. Tracy 1919-9-13 5195 Humboldt Trinity River Valley. Near Willow Creek. 152 Comment
  CAS-BOT-BC153237  Diplacus kelloggii S. K. Harris; J. P. Tracy; H. S. Yates 1936-6-17 3406 Humboldt Burr Valley, on Buck Mountain 1036 Comment
  RSA367638  Disporum smithii Hutchinson 1927-05 s.n. Humboldt [No locality information provided] Comment
  HSC26352  Distichlis spicata T. O. Osborne 1970-4-5 68 Humboldt Flat-iron rock, 3/4 mi. NW of Trinidad Lighthouse. Comment
  UC249802  Distichlis spicata Joseph P. Tracy 1923-6-19 6286 Humboldt Mouth of Davies Creek Comment
  JEPS14696  Dodecatheon alpinum W. L. Jepson Jul 16 1902-Jul 23 1902 2105 Humboldt Trinity Summit 2133 Comment
  HSC17858  Dodecatheon hendersonii D. E. Anderson 1965-5-1 3573 Humboldt Along Bluff Creek road about 2.5 mi. from its junction with Hwy. 96 Comment
  UC1222160  Downingia bacigalupii Joseph P. Tracy with Mr. Murphy 1951-6-26 19583 Humboldt Upper Twin Lakes Comment
  UC602535  Downingia elegans Joseph P. Tracy 1923-6-20 6339 Humboldt Miranda 121 Comment
  JEPS14446  Downingia elegans Chesnut and Drew Aug 1888 Humboldt Comment
  UCSB26681  Drosera rotundifolia Havlik, Neil 1968-8-21 Humboldt South end of Big Lagoon; north of Trinidad Comment
  HSC38071  Drymocallis glandulosa Thomas W. Nelson, James Nelson 1976-5-30 2636 Humboldt McKeown Ranch, N of Dinsmore. Comment
  HSC34912  Drymocallis glandulosa var. glandulosa Thomas W. Nelson 1975-5-24 53 Humboldt McKeown Ranch, N of Dinsmore. Comment
  HSC58166  Drymocallis lactea var. lactea G. L. Clifton, Griswold 1979-8-2 12232 Humboldt Near Oregon Creek, close to the town of Hoopa 1663 Comment
  HSC32345  Drymocallis rhomboidea D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5638 Humboldt Senteney Rock, a large barren Franciscan Rock along Swayback Ridge. Comment
  CAS-BOT-BC70874  Dryopteris arguta Ira L. Wiggins 1932-6-18 5872 Humboldt mouth of Little River Comment
  HSC975  Dryopteris arguta R. I. Bonn 1965-5-9 49 Humboldt 4 mi. W of Arcata on Lanphere Rd. Comment
  CAS-BOT-BC70875  Dryopteris arguta Ira L. Wiggins 1957-6-21 14140 Humboldt E side of road, 1 mi. S of Garberville Comment
  UCD136407  Dryopteris arguta K. Esau 1934-5-8 s.n. Humboldt Above Fort Seward. 457 Comment
  CAS-BOT-BC71055  Dryopteris expansa Mrs. H. C. Cantelow 1936-5-18 1378 Humboldt 8 mi. N. of Orick Comment
  UC203874  Dudleya farinosa Joseph P. Tracy 1918-7-1 4075 Humboldt 3 mi s point of the cape (sw slopes fronting the ocean); Cape Mendocino Comment
  HSC7296  Dulichium arundinaceum J. P. Tracy 1938-9-25 16173 Humboldt Bald Mtn., 'Lake Prairie 1067 Comment
  OBI22607  Eleocharis acicularis Joseph P. Tracy 1934-7-13 13393 Humboldt Dow's Prairie Comment
  JEPS19332  Eleocharis acicularis Joseph P. Tracy 1937-8-12 15626 Humboldt Bald Mountain, at Lake Prairie 1066 Comment
  RSA275279  Eleocharis acicularis var. acicularis Thomas W. Nelson, Jane P. Nelson 1977-7-4 3592 Humboldt Pond above Alder Springs 1585 Comment
  HSC44326  Eleocharis bella Thomas W. Nelson, Jane P. Nelson 1977-6-19 3508 Humboldt Margin of drying pond above Alder Springs 1585 Comment
  UC668025  Eleocharis macrostachya Joseph P. Tracy 1927-7-17 8284 Humboldt Three Cabins North Coast Ranges (grassy slopes on lower western foothills of Chaparral Mountain) 457 Comment
  RSA53823  Eleocharis obtusa var. engelmannii Henry M. Pollard s.n. Humboldt Near Orleans. Comment
  RSA298364  Eleocharis palustris Thomas W. Nelson 1977-9-22 3749 Humboldt In drainage ditch along east side of State Route 101 just north of the Eureka Airport Comment
  HSC38635  Elymus X vancouverensis D. E. Anderson, J. P. Smith 1971-6-28 - 1260 Humboldt 2.5 mi. S of Blue Lake along the Mad River Comment
  HSC54604  Elymus glaucus Overton, Butler 1979-7-24 9688 Humboldt Near Friday Camp, close to the town of Willow Creek. 1250 Comment
  UC1103206  Elymus glaucus J. P. Tracy 1902-7-4 1761 Humboldt Immediate vicinity of Eureka 0 Comment
  UCD62294  Elymus glaucus A. H. Murphy 1947-5-12 Humboldt Roadside near Carlotta. Comment
  HSC102145  Elymus glaucus subsp. glaucus M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-3 1052 Humboldt Patterson Meadows 1566 Comment
  RSA10016  Elymus glaucus subsp. virescens Joseph P. Tracy 1927-6-26 8215 Humboldt Stone Lagoon Comment
  UC212884  Elymus glaucus subsp. virescens Joseph P. Tracy 1920-7-4 5340 Humboldt Little River Beach Northern Coast Ranges (rocky bluffs facing ocean) 15 Comment
  HSC9732  Elymus mollis subsp. mollis D. M. Thompson 1965-5-3 47 Humboldt 1/4 mile S of Fern Canyon, Gold Bluff Beach. Comment
  HSC72676  Elymus multisetus J. P. Smith 1977-7-3 9256 Humboldt Six Rivers National Forest. FS Rd. 13N01, 3 mi. from its junction with Hwy. 36 549 Comment
  HSC72983  Elymus multisetus M. A. Baker 1980-7-11 2785 Humboldt Near Red Mtn. 1341 Comment
  UC573853  Elymus multisetus H. S. Yates 1936-6-17 5722 Humboldt near Burr Valley; South Fork Pk. Quadrangle Comment
  UCD62528  Elymus repens R. Tofsrud 1949-7-1 Humboldt Ferndale. Comment
  HSC8763  Elymus trachycaulus subsp. trachycaulus D. W. C. 1956-6-20 19 Humboldt May Ranch, Bridgeville. 457 Comment
  SEINET200978  Elymus virescens Joseph P. Tracy 1938-6-17 15959 Humboldt Cape Mendocino. South of point of Cape. 3 Comment
  UC1103295  Elytrigia repens Joseph P. Tracy 1925-9-13 7267 Humboldt Eel River North Coast Ranges (mouth, on river bank) 6 Comment
  CDA30232  Epilobium brachycarpum M. K. Beyers, I. Shepardson 2009-9-13 257 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
  UC198621  Epilobium brachycarpum Joseph P. Tracy 1917-9-3 4855 Humboldt Janes Ranch Northern Coast Ranges, Grouse Mt. (lower w slopes) 914 Comment
  HSC16549  Epilobium canum subsp. latifolium Paul Shields 1955-9-25 Humboldt 17 mi. SE of Willow Creek Comment
  HSC48854  Epilobium ciliatum subsp. glandulosum Brad Klipfel 1973-7-15 213 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  RSA181880  Epilobium foliosum Joseph P. Tracy 1928-5-6 8430 Humboldt Northern Coast Ranges: Trinity River Valley, at Willow Creek 152 Comment
  RSA181871  Epilobium hallianum Joseph P. Tracy 1932-7-14 10533 Humboldt Klamath Mountains, Trinity Summit; At Corral Prairie 1524 Comment
  UC505115  Epilobium hallianum Joseph P. Tracy Jul 16 1930-Jul 19 1930 8977 Humboldt McKay Camp Northern Coast Ranges, South Fork Mountain (in meadow) 1676 Comment
  HSC98676  Epilobium hornemannii subsp. hornemannii Cara Witte 2007-6-21 324 Humboldt Board Camp Mountain. Forest Service Road 4N38. 1430 Comment
  HSC41818  Epilobium minutum Thomas W. Nelson, Jane P. Nelson 1977-6-19 3514 Humboldt SW of Alder Springs along Rd. 2S08 1463 Comment
  HSC70924  Epilobium minutum R. York 1980-5-18 574 Humboldt Near Black Mtn 792 Comment
  HSC96280  Epilobium minutum Eric Schori, Kazuyuki Ishimaru 2005-6-15 13 Humboldt About 18 mi. S of Hwy. 299 1400 Comment
  HSC55147  Epilobium oregonense G. L. Clifton, Griswold 1979-8-1 12067 Humboldt Near N Trinity Mtn., close to the town of Hoopa. 1798 Comment
  JEPS31490  Epilobium oregonense Joseph P. Tracy 1935-7-26 14260 Humboldt Water Dog Lakes Trinity Summit (meadows) 1828 Comment
  HSC12757  Epilobium septentrionale M. J. Athey 1970-10-31 9 Humboldt Where Maple Creek drains into the Mad River, Maple Creek Comment
  JEPS31520  Epilobium septentrionale Joseph P. Tracy 1933-9-9 13075 Humboldt vicinity of Garberville (along S. Fork Eel R.); S. Fork Eel R. 121 Comment
  JEPS60147  Equisetum arvense W. L. Jepson 1932-7-24 16378 Humboldt near Camp Grant (bank of main Eel River); Eel River 91 Comment
  CHSC94942  Equisetum laevigatum K. Lang; J. Lang 2005-3-14 13 Humboldt Trinidad, N. California coast. 51 Comment
  CAS-BOT-BC57790  Equisetum telmateia Mrs. A. H. Rodda 1932-5-22 s.n. Humboldt Redwood Highway. Comment
  SEINET5525683 Image available Equisetum telmateia Unknown 1983-6-16 Humboldt Patricks Pt State Park Comment
  HSC54551  Equisetum telmateia subsp. braunii Overton, Butler 1979-7-23 9541 Humboldt Near Titlow Hill, close to the town of Willow Creek. 1280 Comment
  UC1541682  Equisetum telmateia subsp. braunii H. E. Parks March 1934 4830 Humboldt Spruce Cove Trinidad Comment
  UC526938  Equisetum telmateia subsp. braunii Joseph P. Tracy 1934-6-28 13268 Humboldt by Salmon Creek Northern Coast Ranges 9 Comment
  POM281806  Equisetum telmateia var. braunii Lyman Benson 1928-7-9 824 Humboldt Weott Ranger Station. Seaward N Coast Mtn range, S Fork Eel River. 61 Comment
  HSC5496  Erechtites minimus Paul Shields Aug 1955 Humboldt 5 mi. W of Weott Comment
  UC1198997  Eremocarpus setiger Joseph P. Tracy 1948-9-20 18219 Humboldt Hoopa Valley 121 Comment
  RSA145330  Erica lusitanica T. C. Fuller 1961-3-22 5938 Humboldt Humboldt County: N slope Humboldt Hill Comment
  CAS-BOT-BC131506  Ericameria arborescens H. E. McMinn 1922-8-3 476 Humboldt Mt. slope above S.F., Eel River Comment
  UC581773  Ericameria nauseosa var. speciosa Joseph P. Tracy 1933-8-30 13005 Humboldt Horse Mountain 1310 Comment
  HSC75411  Erigeron foliosus var. confinis J. O. Sawyer, M. A. Ericksen 1980-7-7 3573 Humboldt Slopes along Aikens Creek, Adroni Research Area 457 Comment
  UC1223141  Erigeron foliosus var. confinis Joseph P. Tracy 1947-7-5 17785 Humboldt Ridge top, 1 mi w Mud Springs; Trinity Summit Comment
  CAS-BOT-BC296117  Erigeron foliosus var. confinis Doris K. Kildale 1928-7-1 9436 Humboldt Bluff Creek, Klamath River Comment
  HSC57134  Erigeron inornatus var. inornatus Overton, Butler 1979-7-25 9911 Humboldt Near Grouse Mtn., close to the town of Willow Creek 1646 Comment
  UC581719 Image available Erigeron klamathensis Joseph P. Tracy 1937-7-24 15515 Humboldt 2 mi se Devil's Hole; Trinity Summit 1584 Comment
  HSC95874  Erigeron maniopotamicus Thomas W. Nelson, Sydney Carothers 2004-6-18 9253 Humboldt Board Camp Mountain Road off Forest Service Road 49N38, 1 mile from junction with Forest Service Road 1. 1482 Comment
Read comments
Jun 21 2014
  NY688658  Erigeron maniopotamicus T. W. Nelson 2004-6-18 9253 Humboldt Board Camp Mountain Road, off Forest Service Road 49N38, 1 mile from junction with Forest Service Road 1. 1481 Comment
  RSA47128  Erigeron philadelphicus Doris K. Kildale 1925-6-20 717 Humboldt Big Lagoon Comment
  UCSB15926  Erigeron philadelphicus Breedlove, Dennis 1962-6-8 Humboldt On U.S. Highway 101, 3 miles south of Orick Comment
  JEPS22258  Erigeron robustior Milo S. Baker 1923-7-29 134 Humboldt Yager Creek; mt. on s side of camp, region of type locality 792 Comment
  POM126126  Erigeron strigosus Joseph P. Tracy 1923-6-27 6384 Humboldt Trinity River Valley, near Willow Creek Comment
  BLMAR177  Eriodictyon californicum Donald Hazlett 1994-6-7 177 Humboldt King range, near horse Mt. Ridge rd 670 Comment
  UC1083059  Eriodictyon californicum P. C. Everett and E. K. Balls 1959-10-24 23953 Humboldt Somesbar to Orleans (2.8 mi sw from Siskiyou-Humboldt Co. Line); Somesbar to Orleans 198 Comment
  UC162720  Eriodictyon californicum Joseph P. Tracy 1911-7-6 3360 Humboldt along road between Three Creeks and mouth of Willow Creek; Northern Coast Ranges, btw Three Creeks and Willow Creek 762 Comment
  RSA0065545  Eriogonum baileyi Marion P. Harthill 1971-9-8 571 Humboldt Walker River, Toiyabe National Forest, Lower Campgrounds. Comment
  HSC17296  Eriogonum latifolium R. I. Bonn 1965-5-7 25 Humboldt 4 mi. W of Arcata on Lanphere Rd. Comment
  JEPS95019  Eriogonum latifolium Vernon Oswald and Lowell Ahart 1997-9-4 8853 Humboldt 1.1 mi s of Highway 255 (North Spit of Humboldt Bay, w side of New Navy Base Road); North Spit of Humboldt Bay, New Navy Base Road 6 Comment
  UC6344  Eriogonum latifolium H. N. Bolander 1866-1 6569 Humboldt Shelter Cove Comment
  HSC74288  Eriogonum nudum M. A. Baker 1980-7-23 3194 Humboldt Near Orleans Mtn. 1859 Comment
  SEINET6944764  Eriogonum nudum Wanda P. Vestal, A. G. Vestal 1937-6-23 s.n. Humboldt Saddle near east end of Bald Hills, southeast of Orick. Comment
  BLMAR218  Eriogonum nudum var. nudum Jennifer Anthony-Wheeler 1996-7-9 218 Humboldt Pilots ridge., abundant found on dry open areas 1280 Comment
  CAS-BOT-BC261489  Eriogonum nudum var. nudum Carl B. Wolf 1927-8-28 1168 Humboldt Along the Blue Lake road, 9 miles from Willow Creek Comment
  UC1198140  Eriogonum nudum var. nudum Joseph P. Tracy 1930-7-4 9929 Humboldt near. on raod from Bull Creek to Mattole Windy Nip Gap 762 Comment
  UC144102  Eriogonum nudum var. oblongifolium Joseph P. Tracy 1909-8-1 3058 Humboldt Kneeland Prairie Northern Coast Ranges, Kneeland Prairie 762 Comment
  SD22520  Eriogonum nudum var. oblongifolium Susan G. Stokes 1932-7-13 Humboldt From Garberville to Eureka Comment
  HSC72976  Eriogonum umbellatum D. K. Imper 1981-8-12 907 Humboldt Near Tish Tang A Tang Creek. 1780 Comment
  CAS-BOT-BC267969  Eriogonum umbellatum var. argus Henry M. Pollard 1946-9-2 s.n. Humboldt Orleans Mt. 1524 Comment
  RSA53800  Eriogonum umbellatum var. argus H. M. Pollard 1946-9-2 s.n. Humboldt Orleans Mts. 1524 Comment
  HSC98923  Eriogonum umbellatum var. goodmanii Cara Witte 2007-7-3 404 Humboldt Along National Forest 1 on Kinsey Ridge. 1299 Comment
  UC146157  Eriogonum umbellatum var. goodmanii Joseph P. Tracy 1908-6 2918 Humboldt nw slope of Buck Mountain Northern Coast Ranges, Buck Mountain 1219 Comment
  RSA0005167  Eriogonum umbellatum var. nelsoniorum James L. Reveal 2001-7-18 8345 Humboldt Along U.S. Forest Service Road 1 at south end of Whiting Ridge, about 0.5 air miles west-northwest of High Salt Ground and 9.3 air miles west of Hyampom. 1296 Comment
  HSC54745  Eriogonum umbellatum var. stellatum G. L. Clifton, Griswold 1979-7-26 10224 Humboldt Near Salmon Mtn., close to the town of Forks of Salmon 1981 Comment
  HSC49961  Eriophyllum lanatum Maralyn O'Meara 1974-7-11 546 Humboldt Kneeland, Barry Ridge Comment
  HSC5590  Eriophyllum lanatum Paul Shields 1955-6-12 Humboldt 6 mi. W of Myers Flat Comment
  UC582676  Eriophyllum lanatum var. achilleoides Joseph P. Tracy 1935-6-23 13999 Humboldt French Camp Ridge 1066 Comment
  UC535728  Eriophyllum lanatum var. arachnoideum Eleanor Armstrong 1934-8-30 1180 Humboldt creek bed Richardson Grove 121 Comment
  HSC31217  Eriophyllum lanatum var. grandiflorum D. E. Anderson 1972-6-20 5738 Humboldt Along the Redwood Valley-Hoopa Rd., E of the summit. Comment
  POM288346  Eriophyllum staechadifolium Lyman Benson 1929-7-19 1857 Humboldt Mouth of Matole River. Comment
  UC203988  Eryngium armatum Joseph P. Tracy 1918-7-3 4994 Humboldt near ocean Shelter Cove; Northern Coast Ranges, Shelter Cove 15 Comment
  UC492245  Erysimum capitatum Joseph P. Tracy 1932-7-18 10706 Humboldt head Brett Hole; Klamath Mountains, Trinity Summit 1828 Comment
  CAS-BOT-BC41569  Erysimum capitatum Doris K. Kildale 1926-4-18 1769 Humboldt McLellan Mountain. 822 Comment
  UC161542  Erysimum capitatum Joseph P. Tracy July 1908 2904 Humboldt ridge between Van Duzen and Mad Rivers near Low Gap (Humboldt and Trinity Counties); Northern Coast Ranges 914 Comment
  CAS-BOT-BC504305  Erythronium californicum Volney Rattan 1882-6-1 s.n. Humboldt Unspecified Comment
  UC666965  Erythronium grandiflorum Joseph P. Tracy 1933-7-16 12774 Humboldt openings in forest near McKay Camp; South Fork Mountain 1676 Comment
  HSC100888  Erythronium hartwegii Carl C. Marshall Jul 1886 334 Humboldt Trinity summit E of Hoopa. Comment
  HSC45483  Eschscholzia californica Maralyn O'Meara 1974-7-11 534 Humboldt Kneeland, Barry Ridge Comment
  UC184948  Eschscholzia californica Joseph P. Tracy 1912-7-21 3765 Humboldt Alton Northern Coast Region 30 Comment
  HSC58763  Eucephalus ledophyllus Terry Griswold 1979-7-26 10161 Humboldt Near Salmon Mtn., close to the town of Forks of Salmon 2058 Comment
  HSC100577  Eucharidium concinnum Carl C. Marshall Jul 1887 Humboldt Spruce Grove region. Comment
  UC562615  Euchiton sphaericus Joseph P. Tracy 1936-8-24 15176 Humboldt 6 mi se Arcata; Fickle Hill 609 Comment
  POM292452  Euchiton sphaericus Lyman Benson 1929-7-16 1831 Humboldt Weott Ranger Station. S Fork Eel River. Comment
  CAS-BOT-BC206802  Euonymus occidentalis Doris K. Kildale 1926-7-22 2417 Humboldt Metropolitan, woods near Canyon Park Comment
  HSC102563  Euonymus occidentalis var. occidentalis M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-29 1550 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1579 Comment
  HSC99515  Euonymus occidentalis var. occidentalis K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-22 178 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  UC165805  Euonymus occidentalis var. occidentalis Joseph P. Tracy 1908-6 2866 Humboldt opposite Buck Mt.; Northern Coast Ranges, Van Duzen R. Valley 762 Comment
  SEINET11850490  Eupatorium occidentale J. P. Tracy 1950-1 19223 Humboldt Friday Ridge 1219 Comment
  HSC7987  Euphorbia lathyris J. P. Tracy 1941-10-26 17052 Humboldt Hydesville 91 Comment
  NY263154  Euphorbia occidentalis V. K. Chesnut 1888-7-23 Humboldt Hy-Am-Pum (spelling?) Comment
  HSC7991  Euphorbia peplus Paul Shields 1955-6-18 Humboldt H.S.C. campus Comment
  UC1198979  Euphorbia spathulata Joseph P. Tracy 1926-5-9 7455 Humboldt near Bridgeville; Northern Coast Ranges 762 Comment
  HSC66404  Eurybia radulina Ruby Van Deventer 1950-8-15 Humboldt Myers Falt 61 Comment
  JEPS31918  Eurybia radulina Lincoln Constance 1934-6-19 911 Humboldt Grasshopper Peak (near summit) South fork Eel River, Grasshopper Peak 914 Comment
  HSC33173  Euthamia occidentalis Thomas W. Nelson 1973-8-19 1112 Humboldt McKeown Ranch N of Dinsmore Comment
  SEINET3243998  Euthamia occidentalis Joseph P. Tracy 1931-1 9636 Humboldt Lack Pond; in Trinitiy River Valley, opposite mouth of Willow Creek. 152 Comment
  HSC96234  Festuca californica Sara March , Gillian Levy 2005-6-3 6 Humboldt 19.3 mi S of Hwy 299 on NF1 1240 Comment
  SEINET200342 Image available Festuca californica J. P. Tracy 1901-6-23 1175 Humboldt Eureka. 0 Comment
  HSC98829  Festuca californica var. californica Cara Witte 2007-5-21 70 Humboldt White Oak Opening. 1257 Comment
  HSC70903  Festuca idahoensis R. York 1980-5-18 599 Humboldt Near Black Mtn. 792 Comment
  UC1103726  Festuca idahoensis Joseph P. Tracy 1941-6-15 16909 Humboldt Wilder Ridge 609 Comment
  UC188916  Festuca idahoensis Jos. Burtt Davy 1899-6-9 5377 Humboldt near Harris Comment
  UC535634  Festuca idahoensis Joseph P. Tracy 1932-7-12 10447 Humboldt Corral Ranch Klamath Mountains, Trinity Summit 1524 Comment
  HSC104038  Festuca occidentalis C. Reynolds 2015-3-21 26 Humboldt Willow Creek; At bend in Trinity River, on the east end of Kimtu beach, near Camp Kimtu 135 Comment
  HSC103065  Festuca rubra J. P. Smith 2014-6-4 13867 Humboldt Big Lagoon County Park 5 Comment
  HSC33723  Festuca rubra Dryden 1975-5-24 201 Humboldt Samoa Dunes, off Samoa Blvd. across from boat landing. Comment
  HSC9989  Festuca rubra R. H. Berg 1963-4-30 57 Humboldt 1 mi. N of Arcata, on Hwy. 101 Comment
  UCD66355  Festuca rubra H. S. Yates 1936-6-16 5672 Humboldt 1 mile N.E. of Samoa. 3 Comment
  UC249608  Foeniculum vulgare Joseph P. Tracy 1922-8 6104 Humboldt Alton Northern Coast Region, Alton 30 Comment
  RSA183617  Fragaria californica D. E. Anderson 1965-5-1 3558 Humboldt Along Hwy. 96, 1.9 mi. N of Willow Creek. Comment
  CHSC23878  Fragaria chiloensis A. R. Morrison 1974-4-27 Humboldt Throughout understory along immediate coastal cliffs ca. 2 mi. n of Trinidad. Comment
  POM275019  Fragaria chiloensis Lyman D. Benson 1928-7-10 450 Humboldt Clam Beach, Trinidad. 9 Comment
  HSC18619  Fragaria chiloensis D. E. Anderson 1962-3-30 1954 Humboldt Coastal area of Prairie Creek State Park Comment
  RSA46479  Fragaria chiloensis Doris K. Kildale 1927-3-24 2947 Humboldt Fleener Creek Comment
  UC154223  Fragaria chiloensis Joseph P. Tracy 1904-4-24 2025 Humboldt Ocean Beach, sand dunes Humboldt Bay Comment
  HSC44279  Fragaria vesca D. L. Goforth 1977-4-23 4 Humboldt 2.5 mi.. S of Shelter Cove Rd. S Fork of Bear Creek at Wailaki Campground 561 Comment
  CAS-BOT-BC457927  Fragaria vesca subsp. californica Doris Kildale Gillespie 1931-6-7 10643 Humboldt South Fork Mt., Blake Lookout 1726 Comment
  LA207729  Frangula californica subsp. californica Carl B. Wolf; 1934-6-30 5842 Humboldt Back of Shelter Cove 60 Comment
  CAS-BOT-BC59951  Frangula purshiana Doris Kildale Gillespie 1932-9-1 4205 Humboldt Eureka, on S St. 1 block no. of Henderson St. 30 Comment
  HSC89485  Frangula purshiana P. A. Daly 1984-5-13 19 Humboldt Along trail at Trinidad Head 61 Comment
  HSC93266  Frangula purshiana Gordon Leppig 1998-3-25 727 Humboldt McKinleyville, Central Ave. 43 Comment
  HSC102621  Frasera speciosa M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-29 1608 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1579 Comment
  RSA171981  Fraxinus latifolia Robert F. Thorne 1957-9-2 18992 Humboldt Burlington State Park, just S of Weott. Comment
  UC1198637  Fraxinus latifolia Joseph P. Tracy 1923-6-19 6293 Humboldt Upper Mattole North Coast Ranges 152 Comment
  UC479201  Fraxinus latifolia Marcus E. Jones, A. M. 1931-7-16 28864 Humboldt e of Arcata (Junction) Comment
  HSC65858  Fritillaria affinis Gail Newton 1980-6-28 710 Humboldt Near Mad River Butte. 1536 Comment
  UC14992  Fritillaria affinis J. P. Tracy 1901-4-26 1045 Humboldt immediate vicinity of Eureka (Humboldt Hill); Humboldt Hill 0 Comment
  CAS-BOT-BC136028  Fritillaria affinis Doris K. Kildale 1926-3-22 1594 Humboldt Fleener Creek Comment
  RSA275379  Galium Thomas W. Nelson, J. Nelson 1976-5-10 2466 Humboldt Besides S.R. 191 just N of its jct with S.R. 70. Comment
  UC602525  Galium ambiguum var. siskiyouense Joseph P. Tracy 1925-5-30 7026 Humboldt Laribee Valley Northern Coast Ranges 731 Comment
  HSC41599  Galium bolanderi Thomas W. Nelson, Jane P. Nelson 1977-8-6 3705 Humboldt Above Alder Springs 1555 Comment
  JEPS25700  Galium bolanderi P. C. Hutchison 1961-5-22 2031 Humboldt high bluffs along road ca. 5.4 mi n Orleans (on US hwy 299, e side of river); Klamath River Comment
  JEPS52855  Galium californicum subsp. californicum Lauramay T. Dempster and G. L. Stebbins 1963-7-10 3864 Humboldt 4.2 mi e Garberville (on road to Harris, at crest of ridge) 640 Comment
  JEPS52859  Galium californicum subsp. californicum Lauramay T. Dempster 1963-7-9 3849 Humboldt 4.4 mi s Bridgeville (on Hwy 36 to Dinsmore) 457 Comment
  UC1143099  Galium divaricatum H. S. Yates 1936-6-23 5876 Humboldt 4 mi nne Cathay Peak; Dyerville Quadrangle Comment
  JEPS52830  Galium muricatum Lauramay T. Dempster and G. L. Stebbins 1963-7-8 3844 Humboldt 1.8 mi w Willow Creek town (below Boise Creek Campground) 182 Comment
  JEPS6683  Galium muricatum Lincoln Constance 1934-5-23 602 Humboldt se slope of mt. above Look Prairie; South Fork Eek River, Bull Creek Region 365 Comment
  UC1196118  Galium muricatum Joseph P. Tracy 1940-8-25 16709 Humboldt near High Prairie; Bald Mountain 1066 Comment
  HSC19817  Galium porrigens var. porrigens B. D. Rogers, William J. Ferlatte 1966-6-15 2092 Humboldt Near Bridgeville Comment
  HSC39794  Galium trifidum Peter Sorensen 1976-8-8 Humboldt King Salmon 0 Comment
  UC169021  Galium trifidum Joseph P. Tracy 1911-7-7 3370 Humboldt three mi nw junction of Willow Creek and Trinity River (near Beebe's Ranch, meadows on mt. side); Northern Coast Ranges 914 Comment
  UC76673  Galium trifidum var. pacificum Chesnut and Drew 1888-7-8 Humboldt Kneeland Prairie Comment
  UC1023846  Galium triflorum Milo S. Baker 1947-8-10 11903 Humboldt near end of Forest Rd from Hoopa toward Trinity Summit Comment
  UCD132373  Gamochaeta ustulata Linda M. Barker 1976-7-5 1539 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  UC127829  Gamochaeta ustulata Joseph Burtt Davy and Walter C. Blasdale 1899-5 5465 Humboldt near Elk Prairie; North Western California Comment
  HSC41286  Garrya buxifolia Brad Klipfel 1974-7-27 480 Humboldt Horse Mtn. near Indian Butte Comment
  UC906753  Garrya buxifolia Joseph P. Tracy 1947-7-9 17841 Humboldt Horse Mountain 1402 Comment
  CAS-BOT-BC188544  Garrya elliptica L. R. Abrams 1916-7-18 6137 Humboldt Trinidad Comment
  RSA245037  Garrya elliptica David K. Smith 1968-10-11 7 Humboldt 3 mi S of Trinidad. Comment
  UC21582  Garrya elliptica W. C. Blasdale 1896-6-3 Humboldt Eureka; w Eureka Comment
  POM212193  Garrya fremontii Carl B. Wolf 1930-10-24 1762 Humboldt Along the Klamath River one mile above mouth of Slate Creek. 244 Comment
  UC1051597  Garrya fremontii Joseph P. Tracy 1948-9-12 18214 Humboldt 1 mi w Mud Springs; Trinity Summit 1158 Comment
  RSA167447  Gaultheria ovatifolia Joseph P. Tracy 1951-6-14 19417 Humboldt Snow Camp. 1402 Comment
  HSC7806  Gaultheria shallon A. E. Inman 1962-5-25 Humboldt Mad River, Lindsay Creek jct., N bank Comment
  HSC93253  Gaultheria shallon Gordon Leppig 1998-3-25 726 Humboldt Big Lagoon County Park, bank just E of bog 8 Comment
  UC412682  Gaultheria shallon Mrs. M. H. Manning Oct. 1901 Humboldt near Hupa Comment
  UC562735  Gaultheria shallon Joseph P. Tracy 1936-6-28 15017 Humboldt Bald Mountain at Lake Prairie Lake Prairie; Bald Mountain, Lake Prairie 1066 Comment
  UCSB12342  Gaultheria shallon 1961-7-4 Humboldt 4.8 miles east of the North Fork of the Mad River on U.S. 299 685 Comment
  HSC97985  Gayophytum diffusum subsp. parviflorum Cara Witte 2007-7-11 502 Humboldt Grouse Mountain. Forest Service Road 5N04. Near spring. 1583 Comment
  HSC40676  Gayophytum heterozygum Thomas W. Nelson, Jane P. Nelson 1976-7-1 2925 Humboldt Along N side of Mt. Lassic (Signal Peak) 1738 Comment
  CAS-BOT-BC208029  Genista monspessulana C. V. Piper 1921-5-22 s.n. Humboldt Eureka Comment
  CDA4089  Genista monspessulana T. C. Fuller 1958-6-17 570 -58 Humboldt Lower Mattole. 0 Comment
  CAS-BOT-BC217394  Gentiana affinis var. ovata L. R. Abrams 1916-7-20 6143 Humboldt Eureka Comment
  HSC34277  Gentiana plurisetosa K. Irwin 1975-8-13 Humboldt North Trinity Mtn. Area, below Mill Creek Lake Comment
  HSC100487  Geranium incisum Carl C. Marshall Jun 1885 106 Humboldt Hills. Comment
  HSC7248  Geranium molle J. E. Lankila 1962-5-14 22 Humboldt W bank of river at Fernbridge Comment
  HSC8652  Geranium molle J. L. Baker 1965-4-2 30 Humboldt Humboldt Meridian, 4 mi. N of Arcata on N Bank Rd. Comment
  UC56320  Geranium oreganum J. Burtt Davy 1899-6-10 5393 Humboldt Hubbard's Station Mendocino, Humboldt, and Del Norte Counties Comment
  SEINET200730  Gilia capillaris Joseph P. Tracy 1908-7-30 2920 Humboldt Northwest slope of Buck Mtn. 1219 Comment
  BLMAR309  Gilia capitata subsp. capitata Jennifer Anthony-Wheeler 2002-6-20 309 Humboldt Gilham butte, Growing along Rim Rd 731 Comment
  HSC35705  Gilia capitata subsp. capitata Thomas W. Nelson, B. Reinhardt 1975-7-30 2121 Humboldt Beside private road to Pilot Rock Comment
  POM193010  Gilia capitata subsp. pacifica H. E. Parks, Joseph P. Tracy 1930-5-25 0793 Humboldt Near Bridgeville. Comment
  CAS-BOT-BC225471  Gilia millefoliata Tom Craig 1941-6-29 s.n. Humboldt Samoa Comment
  HSC34612  Gilia millefoliata A. Montalvo 1975-5-24 274 Humboldt Samoa Dunes off Samoa Blvd., across from the boat landing Comment
  HSC100594  Gilia squarrosa Carl C. Marshall Sep 1886 245 Humboldt Fields near Arcata. Comment
  HSC100595  Gilia tenella Carl C. Marshall 469 Humboldt Near Garberville. Comment
  CAS-BOT-BC218474  Glehnia littoralis subsp. leiocarpa Carl B. Wolf 1937-6-18 8906 Humboldt Centerville Beach 3 Comment
  UCD127515  Glehnia littoralis subsp. leiocarpa Roman Gankin 1965-8-6 550 Humboldt 1.3 miles south of Samoa, Samoa Peninsula. Comment
  HSC58659  Glyceria elata G. L. Clifton 1979-7-31 11866 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  POM358894  Gnaphalium palustre H. E. Parks, S. T. Parks 1937-08 24080 Humboldt Spruce Cove, Trinidad. Comment
  SD39800  Gnaphalium purpureum Edith A. Purer 1932-7-30 4676 Humboldt South of Orick Comment
  POM261473  Gnaphalium sphaericum Joseph P. Tracy 1940-8-11 16694 Humboldt Trinity River Valley near Raccoon Creek. 152 Comment
  UC179960  Goodyera oblongifolia Joseph P. Tracy 1914-8-30 4595 Humboldt Ocean Beach at Humboldt Bay, Northern Coast Region Ocean Beach; Northern Coast Region, Humboldt Bay, Ocean Beach Comment
  UC147895  Gratiola ebracteata Joseph P. Tracy 1908-6-7 2618 Humboldt Butler Valley Northern Coast Ranges, , Butler Valley (Mad River) 152 Comment
  CAS-BOT-BC304732  Grindelia hirsutula Alice Eastwood; John Thomas Howell 1934-4-11 1321 Humboldt Eureka Comment
  HSC5698  Grindelia hirsutula D. E. Anderson 1962-7-15 2270 Humboldt Big Lagoon Comment
  RSA18609  Grindelia hirsutula Lyman Benson 1937-9-9 9305 Humboldt Coast, 2 miles S of Cape Mendocino. 6 Comment
  UC1174870  Grindelia hirsutula P. C. Everett and E. K. Balls 1959-10-25 23967 Humboldt 6 mi ne Eureka (U.S. Hwy 101) 1 Comment
  UC1223101  Grindelia hirsutula Joseph P. Tracy 1950-9-10 19359 Humboldt 1 mi n Capetown; Bear River Ridge 304 Comment
  POM359112  Grindelia stricta var. platyphylla M. B. Dunkle 1936-8-18 4813 Humboldt South of Eureka. 91 Comment
  RSA861  Grindelia stricta var. stricta E. R. Johnson 1928-8-25 1145 Humboldt Eureka Comment
  SEINET11835909  Grindelia stricta var. stricta J. P. Tracy 1947-1 17944 Humboldt mouth of Eel River, S side, Camp Weeott 3 Comment
  HSC56354  Hackelia bella Griswold, Butler 1979-7-10 6325 Humboldt Near Board Camp Mtn., close to the town of Willow Creek 1372 Comment
  RSA254793  Hackelia bella D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-13 5571 Humboldt Westward lower slopes of Black Lassic near Trinity County line 1585 Comment
  HSC76193  Hackelia californica Overton, Butler 1979-7-24 9786 Humboldt Near Black Rock, close to the town of Willow Creek 1463 Comment
  UC525562  Hackelia californica Joseph P. Tracy 1932-7-12 10428 Humboldt Corral Prairie; Klamath Mountains. Trinity Summit 1524 Comment
  CAS-BOT-BC508213  Hastingsia alba Joseph P. Tracy 1926-6-20 7633 Humboldt Wet or seepy ground, serpentine formation, Horse Mountain 1463 Comment
  HSC39985  Hedera helix Linda M. Barker 1976-9-3 1687 Humboldt Lanphere-Christensen Dunes, 3 mi. W of Arcata. Comment
  CAS-BOT-BC306615  Helenium bigelovii Joseph P. Tracy 1937-8-12 15657 Humboldt Snow Camp 1402 Comment
  HSC73632  Helenium bigelovii M. A. Baker 1980-7-22 3100 Humboldt Near Grogan Hole 152 Comment
  HSC5764  Helenium bigelovii J. Wendell Howe 1934-6-24 1278 Humboldt Bald Hills - Mad Woods Comment
  SEINET5711016  Helenium bigelovii Lowell E. Urbatsch 1990-1 6798 Humboldt From Calif. 99 at Hawkins Bar (in Trinity County), turn onto the rd. to Denny and travel 1.7 miles down this road to a fork; take the left fork (not leading to Denny but to Waterman Ridge and Zeigler Point) and travel 6.7 miles down this road to another fork. Take the rt. fork (away from the rd. leading to Waterman Ridge and Willow Creek). On this road (FS 7 NO4) travel 1.5 miles to another fork; continue on 7NO4N (the left fork) for 7.4 miles. At this point, take 7N04N, the road to Groves Prairie. The collection site is about 50m to the right near the Groves Prairie Creek sign. The site is 17.9 miles from Hawkins Bar just beyond mile marker 9.; Groves Prairie Comment
  CAS-BOT-BC309416  Helenium puberulum L. R. Abrams 1922-6-25 8232 Humboldt 2 mi south of Fortuna Comment
  HSC25071  Heliotropium curassavicum var. oculatum R. W. Becking 1970-10-3 Humboldt Stone Lagoon near Orick Comment
  HSC97470  Hemizonella minima Cara Witte 2007-5-23 92 Humboldt Approximately 2 miles from intersection with 4N70 (Grouse Mountain Lookout Road) on 4N32. 1395 Comment
  HSC103324  Hemizonella minima Erin Lonergan, Benjamin Hart 2007-6-4 1 Humboldt Coldsprings Camp, 6.5 mi. S of Hwy. 299 on Forest Service Road NF1. 1372 Comment
  UC1199118  Hemizonella minima Joseph P. Tracy 1934-6-27 13262 Humboldt top of ridge 2 mi s top of mountain; North Coast Ranges, Horse Mountain 1432 Comment
  JEPS12643  Hemizonia congesta subsp. clevelandii Joseph P. Tracy 1928-9-2 8494 Humboldt Dobbyn Creek Northern Coast Ranges 152 Comment
  CAS-BOT-BC309983  Hemizonia congesta subsp. tracyi Richard Spellenberg 1965-6-14 1129 Humboldt Kneeland Prairie, at Kneeland Airport, 6 mi. s.e. of Kneeland Comment
  CAS-BOT-BC309997  Hemizonia congesta subsp. tracyi L. R. Abrams 1916-7-11 6030 Humboldt Mouth of Grizzly Creek on Van Duzen River Comment
  JEPS82128  Hemizonia congesta subsp. tracyi Rimo Bacigalupi 1959-7-7 7249 Humboldt immediately behind headland of Cape Mendocino (steep grade of coast road, just s of road summit at this point) 30 Comment
  UC180240  Heracleum lanatum Joseph P. Tracy 1914-6-14 4511 Humboldt Carlotta Northern Coast Ranges, Carlotta 60 Comment
  HSC74295  Heracleum maximum M. A. Baker 1980-7-22 3124 Humboldt Near Grogan Hole. 1676 Comment
  CAS-BOT-BC388492  Herniaria hirsuta var. cinerea Henry M. Pollard 1946-8-13 s.n. Humboldt Klamath River, near Orleans Comment
  CAS-BOT-BC310180  Hesperevax sparsiflora var. brevifolia Joseph P. Tracy 1905-4-30 2173 Humboldt Northern Coast Region. At Humboldt Bay Comment
  HSC13055  Hesperocyparis macrocarpa C. E. Fellows 1970-12-7 368 Humboldt HSC Campus, Arcata Comment
  UC176961  Heterocodon rariflorum Joseph P. Tracy 1912-7-25 3822 Humboldt Kneeland Prairie; Northern Coast Ranges 762 Comment
  SEINET10460657  Heterocodon rariflorum Tracy TRACY 17158 Humboldt GARBERVILLE Comment
  CAS-BOT-BC143654  Heteromeles arbutifolia Doris K. Kildale 1927-12-1 4214 Humboldt Klamath River at Orleans Comment
  UC1198756  Heteromeles arbutifolia Joseph P. Tracy 1922-9-3 6107 Humboldt Klamath River at Bluff Creek; Northern Coast Ranges 152 Comment
  CAS-BOT-BC311054  Heterotheca oregona var. oregona Doris K. Kildale 1925-7-26 1062 Humboldt Mad River, near Blue Lake Comment
  JEPS2423  Heterotheca oregona var. rudis W. L. Jepson 1932-7-25 16398 Humboldt Old Grant Camp Eel River Comment
  UC205160  Heterotheca oregona var. rudis Joseph P. Tracy 1919-9-27 5305 Humboldt near Mouth of Willow Creek (gravel bar of Willow Creek); Northern Coast Ranges, Valley of the Trinity River, Willow C 152 Comment
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Jul 15 2016
  CDA25406  Heuchera micrantha A. C. Browne Sr. 1980-6-11 37 Humboldt 0 Comment
  HSC20195  Heuchera micrantha J. F. Knezevich 1968-5-21 451 Humboldt 15 mi. E of jct. of Hwy. 299 with Hwy. 101, past Blue Lake Comment
  UC1222390  Heuchera micrantha Joseph P. Tracy 1950-6-8 18716 Humboldt 2 mi s Ferndale (Wild Cat Road, at the Sand Cut) 304 Comment
  CAS-BOT-BC420725  Heuchera micrantha var. diversifolia Lincoln Constance; Reed C. Rollins 1942-5-12 2883 Humboldt Mouth of Bluff Creek, 6 miles NE of Weitchpec 152 Comment
  RSA0063136  Heuchera micrantha var. hartwegii Marcus E. Jones 1924-4-28 s.n. Humboldt Dyerville. Comment
  HSC55746  Heuchera rubescens G. L. Clifton, Griswold 1979-7-26 10269 Humboldt Near Salmon Mtn., close to the town of Forks of Salmon 1935 Comment
  HSC67880  Hieracium albiflorum J. P. Smith 1973-5-26 6874 Humboldt Scotia Bluffs along the Eel River near Rio Dell Comment
  UC127713  Hieracium albiflorum Harley P. Chandler 1901-6-1 1329 Humboldt Hupa Indian Reservation North Coast Ranges, , Hoopa Indian Re 152 Comment
  CAS-BOT-BC312385  Hieracium albiflorum Kenneth Clark 1980-6-14 687 Humboldt North fork Dead Man's Gulch, Shelter Cove 106 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
  UC187263  Hierochloe occidentalis J. P. Tracy 1901-8-1 1237 Humboldt woods near Rohnerville 91 Comment
  HSC61726  Hirschfeldia incana Ruby Van Deventer 1963-7-1 Humboldt Along Klamath River at Pecwan. Comment
  HSC79506  Hirschfeldia incana Kenneth Clark 1980-5-10 639 Humboldt Shelter Cove, lower alluvial terrace of Dead Man's Gulch 15 Comment
  UCD115146  Hirschfeldia incana Joseph P. Tracy 1931-5-21 9434 Humboldt Eel River, Alton to Fortuna. 15 Comment
  HSC40499  Holodiscus discolor Thomas W. Nelson, James Nelson 1976-7-26 3043 Humboldt E side of middle peak of Mount Lassic group, Signal Peak 1738 Comment
  HSC45476  Holodiscus discolor Maralyn O'Meara 1974-7-11 547 Humboldt Kneeland; Barry Ridge Comment
  HSC58004  Holodiscus discolor G. L. Clifton, Griswold 1979-7-31 11789 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1805 Comment
  UCSC000355  Holodiscus discolor H. L. Person 1932-6-25 s.n. Humboldt E. of Korbel Korbel - Eureka Comment
  HSC10160  Hordeum brachyantherum L. M. Malloy 1965-5-19 41 Humboldt Arcata, between Hwy. 101 and oxydation pond Comment
  UC526707  Hordeum jubatum Joseph P. Tracy 1927-7-16 8249 Humboldt mouth Elk River (region about Humboldt Bay); Northern Coast Region, Humboldt Bay region, Elk River 3 Comment
  UC154227  Horkelia californica Joseph P. Tracy 1906-6-24 2503 Humboldt Region about Humboldt Bay (s slope of Humboldt Hill); Northern Coast Region, Humboldt Hill 152 Comment
  UC902137  Horkelia californica Joseph P. Tracy 1942-9-20 17323 Humboldt 2 mi s town (along edges of foothills); Field's Landing 6 Comment
  JEPS44551  Horkelia tridentata subsp. flavescens Joseph P. Tracy 1925-5-30 7025 Humboldt Laribee Valley; Northern Coast Ranges 701 Comment
  HSC23680  Horkelia tridentata var. flavescens D. E. Anderson, J. O. Sawyer, J. P. Smith 1970-5-10 5054 Humboldt ca. 6 miles W of Hoopa, along road from Redwood Creek to Hoopa Comment
  CHSC68777  Hydrocotyle ranunculoides Vernon Oswald 1997-6-5 8545 Humboldt Robert Gearheart Marsh in the Arcata Marsh and Wildlife Sanctuary. 1 Comment
  CDA38356  Hydrocotyle ranunculoides W. F. Cruickshank 1961-5-27 s.n. Humboldt Arcata, Weyerhauser Lumber Co. 0 Comment
  HSC56350  Hydrophyllum occidentale Griswold, Butler 1979-7-10 6300 Humboldt Near Board Camp Mtn., close to the town of Willow Creek 1372 Comment
  UC1239760  Hydrophyllum tenuipes Joseph P. Tracy 1933-5-28 12413 Humboldt Carlotta; Northern Coast Ranges 60 Comment
  BLMAR562  Hypericum Jennifer Wheeler 2009-7-21 562 Humboldt Headwaters Forest Reserve, along Elk River trail just past yew trees on right 60 Comment
  HSC57872  Hypericum anagalloides Walter Overton, Butler 1979-7-31 11401 Humboldt Near Water Dog Lakes, close to the town of Hoopa 1830 Comment
  CAS-BOT-BC400792  Hypericum anagalloides Henry M. Pollard 1948-7-18 s.n. Humboldt Area near Orleans Comment
  UC183761  Hypericum anagalloides Joseph P. Tracy 1913-6-22 4272 Humboldt opposite Buck Mt. (Dinsmore's Ranch); Northern Coast Ranges, Valley of Van Duzen R., Dinsmore's Ra 762 Comment
  UC722736  Hypericum anagalloides C. L. Hitchcock and J. S. Martin 1939-7-14 5442 Humboldt 7 mi. e. Shelter Cove 243 Comment
  RSA12422  Hypericum androsaemum C. B. Wolf 1934-7-2 5874 Humboldt Small lake at Snow Camp (Mountains east of Korbel). 1372 Comment
  CAS-BOT-BC312887  Hypochaeris glabra Alice Eastwood 1923-8-16 12326 Humboldt Carlotta Comment
  HSC103990  Hypochaeris glabra M. F. Norman 2015-4-11 4 Humboldt Arcata, Ma-le'l Dunes Comment
  CAS-BOT-BC311437  Hypochaeris radicata Huron H. Smith 1911-6-17 3368 Humboldt Samoa Comment
  CAS-BOT-BC123474  Iliamna latibracteata Doris K. Kildale 1926-7-5 2312 Humboldt Prairie Creek, near Davidson's. Comment
  RSA20726  Iliamna latibracteata Carl B. Wolf 1937-9-11 9322 Humboldt Redwood Hwy 3 miles north of Orick (Davison s Ranch on Prairie Creek) 61 Comment
  UC668130 Image available Iliamna latibracteata Joseph P. Tracy 1938-8-14 16104 Humboldt Willow Creek Canyon, along Trinity Highway. 762 Comment
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Feb 27 2012
  UC902183 Image available Iliamna latibracteata Joseph P. Tracy 1946-7-28 17623 Humboldt Along Trinity Highway Willow Creek Canyon. 762 Comment
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Feb 27 2012
  UC1103806  Ionopsidium acaule Joseph P. Tracy 1920-3-3 5313 Humboldt Eureka, around Humboldt Bay, (J.P.T's garden) Eureka; Northern Coast Region, Eureka 30 Comment
  CAS-BOT-BC133500  Iris Henry M. Pollard 1944-9-1 s.n. Humboldt Near Orleans Comment
  RSA67626  Iris Philip A. Munz 1951-7-15 16546 Humboldt dry slopes in woods, about 3 miles northeast of Willow Creek Comment
  JEPS17227  Iris douglasiana Joseph P. Tracy 1939-6-17 16311 Humboldt vicinity Carlotta 30 Comment
  POM290986  Iris douglasiana Lyman Benson 1929-6-18 1734 Humboldt North of Arcata Comment
  SEINET12058930  Iris douglasiana E. A. York 1990-1-10 2662 Humboldt USGS Redwood Field Station, Arcata Comment
  UC1196391  Iris macrosiphon Joseph P. Tracy 1930-5-25 8709 Humboldt Larrabee Valley 731 Comment
  HSC34872  Iris purdyi Thomas W. Nelson, James Nelson 1975-5-5 1781 Humboldt Beside Hwy. 101, 5 mi. S of Salmon Creek bridge Comment
  RSA136521  Iris purdyi Lee W. Lenz, E. K. Balls 1952-5-11 17191 Humboldt 10.1 miles southwest from Trinity - Humboldt County line; 5.2 miles north of Harris on road to Zenia Comment
  HSC43789  Iris tenax subsp. klamathensis B. Reinhardt 1976-5-11 Humboldt 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
  SEINET3875944  Iris tenax subsp. klamathensis T. Jimerson, J. Pageau 1979-4-27 438 Humboldt On Ishi Pishi Road, 1.7 mi. south of intersection with Forest Road 11N11, Orleans.; 0 213 Comment
  HSC38356  Isatis tinctoria J. P. Smith, J. O. Sawyer 1974-6-2 7649 Humboldt Below Berry Summit on old Hwy. 299 762 Comment
  UC198638  Isolepis setacea Joseph P. Tracy 1917-6-17 4817 Humboldt around, Salmon Creek Valley Humboldt Bay; Northern Coast Ranges, , Salmon Creek Valley 30 Comment
  HSC37499  Jaumea carnosa J. D. Ackerman 1975-8-2 617 Humboldt Hwy. 101 between Arcata and Eureka. Humboldt Bay across from Murray Field Comment
  RSA340075  Juncus breweri Harold Lint 1964-4-1 C- 306 Humboldt Dry Lagoon State Park, Highway 101. Comment
  HSC89596  Juncus bufonius var. bufonius M. Roantree 1985-5-2 31 Humboldt E side of Trinidad Head. Comment
  HSC34706  Juncus covillei Thomas W. Nelson 1974-7-20 1699 Humboldt McKeown Ranch N of Dinsmore, flood plain of Mad River Comment
  RSA70280  Juncus covillei F. W. Peirson 1923-7-9 3666 Humboldt Humboldt County State Park on Eel River, northern California. Comment
  JEPS66996  Juncus effusus subsp. pacificus W. L. Jepson 1936-8-17 17908 Humboldt 2 mi s Fields's Landing (near Still's Ranch) Comment
  UC1103036  Juncus falcatus subsp. sitchensis Joseph P. Tracy 1906-5-13 2458 Humboldt Ocean Beach Northern Coast Region, Humboldt Bay Comment
  HSC58027  Juncus laccatus G. L. Clifton 1979-7-31 11842 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  UCD150380  Juncus lescurii William Anderson and H. Mc. 1964-8-5 s.n. Humboldt Dry Lagoon. Comment
  HSC102215  Juncus mertensianus M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 1131 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  UC14898  Juncus occidentalis J. P. Tracy 1901-6-23 11721 Humboldt immediate vicinity Eureka 0 Comment
  RSA54122  Juncus tenuis Henry M. Pollard s.n. Humboldt Near Orleans. Comment
  CAS-BOT-BC235882  Keckiella corymbosa Milo S. Baker 1927-8-15 2459 b Humboldt Bed of Eel R. at S. Fork Station Comment
  UC153388  Keckiella corymbosa P. E. Goddard 1906-6 635 Humboldt North Fork of Eel River Comment
  UC413904  Keckiella corymbosa C. M. Goethe 1930-8-13 Humboldt Eel River Comment
  UC719827  Keckiella corymbosa Rogers McVaugh 1941-8-3 6213 Humboldt ca 8 mi s Garberville; Richardson Grove State Park Comment
  UC162566  Keckiella lemmonii Joseph P. Tracy 1911-7-11 3504 Humboldt opposite Sugar Bowl Ranch (near Willow Creek, hill slopes at w side of Trinity River, opposite Sugar-bowl ranch); Northern Coast Ranges 304 Comment
  HSC70569  Kelloggia galioides M. A. Baker 1980-7-23 3164 Humboldt Near Orleans Mtn. 1859 Comment
  UC1132146  Koeleria macrantha H. S. Yates 1936-6-17 5699 Humboldt lower nw slope Buck Mountain; South Fork Peak Quad., lower nw slope Buck Mountain Comment
  UC169348  Lagophylla ramosissima Joseph P. Tracy 1912-8-3 3966 Humboldt opposite Buck Mountain; Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  CHSC79684  Lamiastrum galeobdolon Gordon Leppig; Kai Neander 2000-4-13 1292 Humboldt Arcata. 100 m south of trail 5 and 10 intersection. UTM zone 10, 4527N, 40E. 91 Comment
  RSA46394  Lapsana communis Charles L. Pollard 1946-8-26 s.n. Humboldt Between Orleans and Camp Creek, Klamath River Canyon. Comment
  UCSB30626  Lapsana communis Edwards, David 1974-7-13 Humboldt NE facing bank of ditch at the NE end of a field located to the SW of the intersection of Fickle Hill Rd. and Hill St., ca. 1/3 mi. E. of U.S. 101, Arcata 36 Comment
  CDA18209  Lasthenia californica G. D. Barbe, T. C. Fuller 1974-6-17 1836 Humboldt North Coast Ranges; Lower Pacific Drive, S of sewage plant, W of golf course, at Sail Court, Shelter Cove. 60 Comment
  JEPS10178  Lasthenia californica subsp. californica W. L. Jepson 1902-6-10 1885 Humboldt Ft. Seward Ranch Ridge 1219 Comment
  NY8451  Lathyrus biflorus T. W. Nelson 1980-6-10 5432 Humboldt Blocksburg Quadrangle. Serpentine on NE slope of Red Mountain 1371.6 Comment
  UC1368670  Lathyrus glandulosus J. P. Tracy 1946-5-19 17530 Humboldt Kneeland, at Cameron Hill Kneeland; , Cameron Hill 670 Comment
  HSC32085  Lathyrus jepsonii subsp. californicus D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-17 5702 Humboldt McKeown Ranch, N of Dinsmore Comment
  UC1222416  Lathyrus jepsonii var. californicus Joseph P. Tracy 1942-7-1 17361 Humboldt opposite Buck Mountain; Van Duzen River 762 Comment
  HSC44618  Lathyrus littoralis Laura Witherspoon 1977-5-25 Humboldt Manila Comment
  HSC46964  Lathyrus littoralis J. P. Smith, Thomas W. Nelson 1977-6-30 9217 Humboldt Samoa Peninsula just E of the drag strip. Comment
  SBBG3353  Lathyrus littoralis H. and M. Dearing 1939-5-25 3435 Humboldt near Samoa Comment
  HSC14741  Lathyrus littoralis Francis Winter 1960-5-14 Humboldt Samoa Peninsula Comment
  HSC49393  Lathyrus littoralis R. York 1979-5-15 291 Humboldt Coastal strand opposite the Louisiana Pacific Mill in Samoa. Comment
  HSC93527  Lathyrus littoralis Gordon Leppig, Kai Neander, Sylvia Leppig 1998-5-25 787 Humboldt Big Lagoon State Park. 2 Comment
  HSC64214  Lathyrus nevadensis var. nevadensis J. O. Sawyer, M. A. Ericksen 1979-6-23 3387 Humboldt Slopes below Mill Creek Lakes 1585 Comment
  UC162614  Lathyrus nevadensis var. nevadensis Harley P. Chandler Jun 1901 1443 Humboldt Klamath River North Coast Ranges 304 Comment
  HSC14753  Lathyrus palustris J. P. Tracy 1907-7-20 2593 Humboldt Near Samoa Comment
  JEPS55296  Lathyrus torreyi W. L. Jepson 1934-5-7 16705 Humboldt Buckeye Prairie Bull Creek Comment
  NY73892  Lathyrus torreyi H. N. Bolander 1866-1 6506 Humboldt Thickets near the coast Comment
  POM277519  Lathyrus torreyi Lyman Benson 1928-7-12 460 Humboldt Weott Ranger Station. 61 Comment
  SEINET12154019  Lathyrus torreyi J. P. Tracy 1943-1 17430 Humboldt Willow Creek Canyon, along Trinity Hwy. East Fork of Willow Creek Comment
  UC931335  Lathyrus vestitus var. ochropetalus C. L. Hitchcock 1949-6-8 19093 Humboldt 1 mi w Willow Creek (near Highway 299) Comment
  UCD106539  Lathyrus vestitus var. ochropetalus C. L. Hitchcock 1949-6-7 19081 Humboldt Redwood highway ca. 15 miles N of Garberville. Comment
  HSC15978  Lavatera cretica D. E. Anderson 1962-10-22 2341 Humboldt Samoa Comment
  CAS-BOT-BC325930  Layia carnosa Joseph P. Tracy 1917-5-30 4796 Humboldt Sand dunes at mouth of Little River. 6 Comment
  CAS-BOT-BC325998  Layia carnosa Alice Eastwood 1907-5-15 s.n. Humboldt Samoa Comment
  UC1224620  Layia carnosa Peter H. Raven 1963-5-15 18370 Humboldt just w of Mad River Slough Lanphere Ranch; Arcata Comment
  UC1199156  Layia gaillardioides Joseph P. Tracy 1927-6-18 8182 Humboldt Cape Mendocino 3 Comment
  JEPS40028  Layia gaillardioides Lincoln Constance 1934-6-3 804 Humboldt road from High Rock (on Redwood Hwy 1 mi n of Dyerville) to Horse Prairie; South Fork Eel River Comment
  POM361751  Leontodon nudicaulis M. B. Dunkle 1936-8-18 4810 Humboldt Fortuna Comment
  RSA518828  Lepidium Joseph P. Tracy 1933-8-22 12992 Humboldt Mouth of Eel River. 3 Comment
  UC14403  Lepidium densiflorum Chesnut and Drew 1888-7-10 Humboldt Jarnigan's Comment
  CAS-BOT-BC89492  Lepidium heterophyllum Joseph P. Tracy 1942-6-15 17140 Humboldt Miranda. 91 Comment
  UC161491  Lepidium strictum Joseph P. Tracy 1911-7-1 3276 Humboldt near Hydesville (at Carlotta); Northern Coast Region, Carlotta 60 Comment
  UC1199161  Lepidium virginicum Joseph P. Tracy 1916-5-31 4690 Humboldt Holmes Flat, along Eel River from South Fork to Scotia Northern Coast Ranges, Eel River 60 Comment
  UC1222651  Lepidium virginicum var. pubescens Joseph P. Tracy 1950-8-20 19317 Humboldt Orleans Comment
  RSA259570  Leptosiphon androsaceus Thomas W. Nelson 1975-6-21 1948 Humboldt Hwy 36, 5 miles east of Bridgeville Comment
  UCD118596  Leptosiphon androsaceus Joseph P. Tracy 1948-6-13 18048 Humboldt near Harris (2 miles north.) 609 Comment
  RSA0096840  Leptosiphon filipes Joseph P. Tracy 1950-5-30 18710 Humboldt Trinity River Valley, at Willow Creek. 152 Comment
  POM247188  Lessingia nemaclada Joseph P. Tracy 1937-9-5 15681 Humboldt Trinity River Valley, at Willow Creek. 152 Comment
  UCSB15427  Leucanthemum vulgare 1961-7-3 Humboldt Along State Highway 299, 18.5 miles east of U.S. Highway 101 670 Comment
  POM266015  Lewisia cotyledon var. howellii Lincoln Constance, Reed C. Rollins 1942-5-12 s.n. Humboldt Mouth of Bluff Creek, 6 miles NE of Weitchpec. 152 Comment
  HSC55095  Lewisia leeana G. L. Clifton, Griswold 1979-7-31 11799 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa. 1845 Comment
  RSA249391  Lewisia nevadensis D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5590 Humboldt Mount Lassic and 2 smaller peaks to immediate east. 1768 Comment
  UC673017  Lewisia pygmaea Joseph P. Tracy 1930-7-17 8979 Humboldt near McKay Camp; South Fork Mountain 1676 Comment
  JEPS5878  Lewisia triphylla Joseph P. Tracy 1935-7-24 14178 Humboldt near Ranger Station; Trinity Summit 1828 Comment
  CAS-BOT-BC283512  Leymus X vancouverensis Joseph P. Tracy 1927-6-26 8214 Humboldt Stone Lagoon 6 Comment
  CAS-BOT-BC436499  Ligusticum apiifolium John Thomas Howell 1937-7-31 13714 Humboldt Boise Creek Comment
  HSC49055  Ligusticum californicum Patricia Shesgreen 1978-8-2 123 Humboldt Arcata Community Forest, 100 yds N of field house, 25 ft from pond Comment
  HSC56325  Ligusticum grayi Overton, Butler 1979-8-2 12668 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  CAS-BOT-BC508393  Lilium columbianum Doris K. Kildale 1927-7-10 3739 Humboldt Gans Prairie, Bald Hills Comment
  HSC57912  Lilium kelleyanum Gilbert Muth 1979-7-31 11521 Humboldt Near Tish Tang A Tang Creek, S Fork, close to the town of Gasquet 1417 Comment
  CAS-BOT-BC130635  Lilium kelloggii Albert Vollmer 1949-7-1 3 Humboldt 3 miles east of the old Eureka-Arcata Road on the Kneeland road Comment
  SEINET3992216  Lilium pardalinum Unknown 1908-6-27 2868 Humboldt Valley of Van Duzen River, opposite Buck Mountain 305 Comment
  UC54669  Lilium rubescens Mrs. M. H. Manning 1900-1 Humboldt near Hupa Comment
  UCR39794  Lilium rubescens D. K. Imper 1983-7-11 s.n. Humboldt Six Rivers National Forest. Forest Service Road 10N14 c. 2 mi north of junction with 13N01, north of Blue Lake 762 Comment
  CAS-BOT-BC506200  Lilium vollmeri Albert Vollmer 1949-7-1 2 Humboldt Bog on Bald Mountain Comment
  UC668277  Limnanthes douglasii subsp. douglasii Joseph P. Tracy 1933-5-20 12271 Humboldt Bear River Ridge Northern Coast Ranges 609 Comment
  UC668184  Limnanthes douglasii subsp. nivea Joseph P. Tracy 1937-6-20 15346 Humboldt ten mi up stream from mouth; Bear River 152 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
  UC1198567  Linanthus bicolor Joseph P. Tracy 1914-5-14 4435 Humboldt Fort Seward Northern Coast Ranges 121 Comment
  UC146166  Linanthus bicolor Joseph P. Tracy 1908-6-9 2650 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  JEPS79923  Linanthus ciliatus Joseph P. Tracy 12923 Humboldt s slope Grouse Mountain (towards Grouse Creek Basin); North Coast Ranges 1219 Comment
  CDA6374  Linaria vulgaris E. C. Whitney 1965-9-25 Humboldt Highway 101, Fortuna. 0 Comment
  HSC12026  Linaria vulgaris D. Santana 1970-11-2 100 Humboldt E side of old Hwy. 1 in ditch Comment
  CHSC1015  Linum bienne M. Underhill 1952-7-14 Humboldt Humboldt county. 15 Comment
  HSC79358  Linum bienne Kenneth Clark 1980-4-18 595 Humboldt Above Dead Man's Gulch. 168 Comment
  SEINET12185780  Linum micranthum J. P. Tracy 1950-1 18994 Humboldt on the Albee Rd., Buck Mountain, high meadow on W side, 3 mi S of Burr Valley 1158 Comment
  UC1103631  Lipocarpha occidentalis Joseph P. Tracy 1920-8-15 5368 Humboldt Klamath R. at mouth of Bluff Creek; Northern Coast Ranges, Klamath R. 152 Comment
  UC666982  Listera caurina Joseph P. Tracy 1930-7-17 9016 Humboldt near McKay Camp; South Fork Mountain 1676 Comment
  UC535731  Lithocarpus densiflorus Eleanor Armstrong 1934-8-23 1188 Humboldt Richardson Grove Comment
  SACT002878  Lithocarpus densiflorus D. McIntosh, L. Sanny 1959-3-1 Humboldt Densely covered hillside Comment
  SEINET12034162  Lithocarpus densiflorus J. P. Tracy 1950-1 19253 Humboldt Grasshopper Peak (in Bull Creek State Park at head of Canoe Creek) Comment
  SEINET12034163  Lithocarpus densiflorus K. S. Erdman 1970-1 4793 Humboldt Redwood Natl Park naer Holter Ridge entrance on the Bald Hills road SE of Orick;T10N,R2E,Sec18 Comment
  SEINET5725705 Image available Lithocarpus densiflorus Lowell E. Urbatsch, Patricia B. Cox; Alan W. Lievens 1988-1 6109 Humboldt From California 299 at Hawkins Bar ( in Trinity Couty), turn onto the road to Denny and travel 1.7 miles down this road to a fork in the road. Take the lafthand road (leading to Waterman Ridge, Zwigler Point) and travel 6.7 miles down this road to another fork in the road. Take the right fork (away from the road leading to Waterman Ridge and Willow Creek). On this road (7NO4) , travel 4.5 miles to collection site.; Denny Comment
  UC1196492  Lithophragma affine Joseph P. Tracy 1918-5-26 4944 Humboldt lower foothills towards Redwood Creek Grouse Mt.; Northern Coast Ranges, , towards Redwood Creek 762 Comment
  CAS-BOT-BC283407  Lolium multiflorum H. M. Hall 1924-8-9 s.n. Humboldt Van Duzen River Valley, near Carlotta Comment
  HSC58408  Lolium perenne Griswold, Butler 1979-7-10 7123 Humboldt Near Board Camp Mtn., close to the town of Willow Creek. 1350 Comment
  HSC72637  Lolium perenne J. P. Smith 1977-7-3 9246 Humboldt Six Rivers National Forest, along the road to Onion Lake, just above Blue Lake 976 Comment
  UC1103158  Lolium temulentum Joseph P. Tracy 1909-8-1 3064 Humboldt Kneeland Prairie; Northern Coast Ranges, Kneeland Prairie 762 Comment
  UC188800  Lolium temulentum Jos. Burtt Davy 1899-7-30 6205 Humboldt Russ Ranch Comment
  UCD66673  Lolium temulentum M. A. Jargas 1926-6-8 Humboldt Happy Valley. Comment
  RSA254759  Lomatium californicum Thomas W. Nelson, James Nelson 1973-5-28 954 Humboldt McKeown Ranch north of Dinsmore. Comment
  JEPS16097  Lomatium californicum Joseph P. Tracy July, 1908 2905 Humboldt ridge between Van Duzen & Mad Rivers near Low Gap; Northern Coast Ranges, Humboldt & Trinity Co.'s 914 Comment
  HSC71827  Lomatium ciliolatum var. ciliolatum Thomas W. Nelson, Jane P. Nelson 1980-6-27 5939 Humboldt Along old trail to pond above Alder Spring, 0.5 mi. N of campground 1555 Comment
  HSC31213  Lomatium dasycarpum subsp. dasycarpum D. E. Anderson 1972-6-20 5735 Humboldt Along the Redwood Valley-Hoopa Rd., E of the summit. Comment
  UC642258  Lomatium dasycarpum subsp. dasycarpum Joseph P. Tracy 1927-3-27 7852 Humboldt near the South Fork Trinity R. Valley 182 Comment
  UC659308  Lomatium dissectum var. dissectum Lincoln Constance, Alan A. Beetle with Joseph P. Tracy 1940-5-17 2617 Humboldt lower slopes of Buck Mt. near Eureka; Buck Mt. 792 Comment
  HSC55353  Lomatium macrocarpum Terry Griswold, Butler 1979-7-12 7279 Humboldt Near Cedar Creek 1158 Comment
  HSC35753  Lomatium macrocarpum Thomas W. Nelson, Jane P. Nelson, James Nelson 1975-7-15 1997 Humboldt French Camp, Bald Hills. Comment
  CHSC97956  Lomatium nudicaule Kaylea Eickhoff; Cara M. Witte 2005-6-3 1 Humboldt White Oak Opening, 19.3 miles south of Hwy. 299 on NF1. UTM 0441136, 4507151. 1240 Comment
  UC906644  Lomatium triternatum var. triternatum Joseph P. Tracy 1942-6-23 17228 Humboldt 1 mi. w. Box Camp (Trinity Summit); Trinity Summit 1219 Comment
  OBI8842  Lomatium utriculatum Tracey Call, Viola Call 1964-6-19 2271 Humboldt 1 mi north of Harris P.O. and ca 3-1/2 mi south of Harris Jct Comment
  UC1239545  Lonicera ciliosa Joseph P. Tracy 1936-8-7 15115 1/2 Humboldt 2 mi se Devil's Hole; Trinity Summit 1584 Comment
  UC602562  Lonicera conjugialis Joseph P. Tracy 1930-7-19 9094 Humboldt near McKay Camp; South Fork Mountain 1676 Comment
  CAS-BOT-BC240476  Lonicera hispidula Mrs. E. C. Van Dyke 1931-6-30 s.n. Humboldt Willow Creek Comment
  UC1052838  Lonicera hispidula var. vacillans W. L. Colwell 1955-6-7 25 Humboldt 1/2 mi n Grasshopper Mountains lookout (3 mi w of Weott); Quad. 29-B-3 914 Comment
  UC169081  Lonicera hispidula var. vacillans Mrs. M. H. Manning 1901-7-27 308 Humboldt near Hupa (Bald Hill) Comment
  HSC91605  Lonicera involucrata E. Mackey 1986-5-13 Humboldt Patrick's Point State Park. Comment
  HSC3932  Lonicera involucrata var. ledebourii H. E. Parks May 1935 5542 Humboldt Spruce Cove, Trinidad. Comment
  HSC62683  Lonicera involucrata var. ledebourii Michelle Stevens 1979-4-21 54 Humboldt Ponds across from Clam Beach. 0 Comment
  HSC89435  Lonicera involucrata var. ledebourii P. A. Daly 1984-5-13 24 Humboldt Along trail/Rd. at Trinidad Head. 61 Comment
  HSC89542  Lonicera involucrata var. ledebourii M. Roantree 1985-4-25 2 Humboldt E side of Trinidad Head. Comment
  RSA47121  Lonicera involucrata var. ledebourii Doris K. Kildale 1926-4-9 1740 Humboldt Samoa road, sandy peninsula. Comment
  SBBG69576  Lonicera involucrata var. ledebourii R. Hartwell 1938-8-6 Humboldt near Arcata Comment
  UCR270277  Lotus John F. Emmel 2003-7-30 1798 Humboldt North Coast Range, Redwood National Park, 16.6 road miles southeast of Hwy 101 on Bald Hills Road, c. 0.3-0.4 air mile west of Schoolhouse Peak 823 Comment
  SEINET3523667 Image available Lotus A. A. Heller 1923-7-9 13778 Humboldt Near Blue Lake, 5 mi from Arcata Comment
  POM210206  Lotus aboriginus H. E. Parks 1932-07 3698 Humboldt Bishop Pine Lodge, Trinidad. 61 Comment
  UC1223426  Lotus oblongifolius var. oblongifolius Joseph P. Tracy 1936-6-3 14856 Humboldt opposite mouth of Willow Creek; Trinity River Valley, Lack Pond 152 Comment
  SEINET12154263  Lotus purshianus L. K. Henry 1971-1 s.n. Humboldt along rt 36, 2miE of Dinsmore in Six Rivers National Forest Comment
  UC1197288  Lotus purshianus var. purshianus Joseph P. Tracy 1906-7-4 2526 Humboldt near Hydesville; Northern Coast Region 60 Comment
  UC1197303  Lotus wrangelianus Joseph P. Tracy 1927-6-18 8178 Humboldt on road from ocean towards Petrolia; Northern Coast Ranges, Cape Mendocino 30 Comment
  CAS-BOT-BC201193  Lupinus L. R. Abrams 1922-6-25 8235 Humboldt 2 mi south of Fortuna Comment
  UC1223281  Lupinus adsurgens Joseph P. Tracy 1946-6-15 17567 Humboldt at the Ski Lodge, Horse Mountain (Horse Mountain); Horse Mountain 1219 Comment
  UC1223268  Lupinus albicaulis var. shastensis Joseph P. Tracy 1949-8-7 18433 Humboldt on road from Hoopa to Box Camp at summit of ridge near where the road to Big Hill turns off Trinity Summit; , rd fr Hoopa to Box Camp Comment
  CHSC19506  Lupinus arboreus Gary J. Sebbings 1970-4-18 64 Humboldt Along U.S. lol 1.0 mi north of Clam Beach exit. Comment
  SDSU5006  Lupinus arboreus D. F. Howe 1969-5-30 4586 Humboldt 2.4 miles south of Orick on #101. Comment
  UCD106622  Lupinus arboreus Roman Gankin 1965-8-6 548 Humboldt 1.3 miles south of Samoa, Samoa Peninsula. Comment
  SEINET10488455  Lupinus arboreus Michael Currier 1984-7-9 Currier 59 Humboldt Along ocean fromt at clam beach, 6 miles n of arcata; hwy 101. Penstemon sp., And gramineae Comment
  RSA183596  Lupinus arboreus var. arboreus C. F. Zeillemaker 1964-4-7 64 -A-006 Humboldt Three miles southwest of Samoa on Samoa Peninsula at U.S. Coast Guard Station. 3 Comment
  RSA44063  Lupinus arboreus var. arboreus W. Bridge Cooke 1942-7-4 16358 Humboldt Roadside along Highway 101, 4 miles south of Trinidad. Comment
  UC150119  Lupinus bicolor Harley P. Chandler May, 1901 1094 Humboldt Scotia; North Coast Ranges, Scotia 60 Comment
  HSC101036  Lupinus elmeri A. Thoele, Sydney Carothers 1995-7-14 58 Humboldt Six Rivers National Forest; .6 mi. south of intersection of Forest Route 1 & Rd. 3N06, on the edge of Route 1. 1720 Comment
  HSC57313  Lupinus latifolius Griswold, Butler 1979-7-10 6326 Humboldt Near Board Camp Mtn., close to the town of Willow Creek 1372 Comment
  SEINET12154561  Lupinus latifolius H. P. Chandler 1901-1 1365 Humboldt Kalmath River 152 Comment
  RSA161252  Lupinus latifolius subsp. latifolius Peter H. Raven, R. Snow 1958-7-20 13645 Humboldt 1.1 miles south of junction of Friday Ridge Road on Titlow Hill Road, near Grouse Ridge. Comment
  SBBG8916  Lupinus latifolius var. viridifolius H. and M. Dearing 1939-5-24 3416 Humboldt 5 mi S of Alton Comment
  UC503015  Lupinus latifolius var. viridifolius Joseph P. Tracy 1929-7-4 8624 Humboldt French Camp Ridge; Northern Coast Ranges, French Camp Ridge 1066 Comment
  CHSC921  Lupinus littoralis M. Underhill 1952-7-13 Humboldt Near coast. 0 Comment
  UC584210  Lupinus littoralis David D. Keck and J. Clausen 1935-6-16 3383 Humboldt Mouth of Little River Comment
  UC1223254  Lupinus littoralis Joseph P. Tracy 1938-6-16 15940 Humboldt Brainards Point, along highway between Eureka and Arcata Comment
  HSC36152  Lupinus lyallii var. villosus Thomas W. Nelson, Jane P. Nelson, James Nelson 1975-7-20 2049 Humboldt Along Rd. 2S08 to Pine Mtn. 1524 Comment
  SEINET10486132  Lupinus polycarpus Donald E. Bright 1962-6-10 Bright 269 Humboldt Roadside, 5 mi s of ferndale. Comment
  SD42562  Lupinus polyphyllus Carl B. Wolf 1937-8-11 9144 Humboldt 0.5 mile east of Alton. 21 Comment
  HSC14863  Lupinus rivularis J. L. Baker 1965-4-28 29 Humboldt Humboldt Meridian, 4 mi. N of Arcata on N Bank Rd. Comment
  UCSB12242  Lupinus rivularis Breedlove, Dennis 1961-7-4 Humboldt 10.9 miles west of Willow Creek on U.S. 299 822 Comment
  HSC64637  Luzula comosa Ruby Van Deventer 1959-6-20 Humboldt Humboldt-Del Norte county line, Onion Lake 1220 Comment
  UC1152143  Luzula comosa Joseph P. Tracy 1951-6-26 19550 Humboldt at Snow Camp; in fir woods at Snow Camp Comment
  HSC45017  Luzula multiflora subsp. multiflora R. Sutherland 1978-4-24 4 .24478 Humboldt Kinsey Ridge above Oat Creek 396 Comment
  HSC58033  Luzula parviflora G. L. Clifton 1979-7-31 11867 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  UC1056033  Luzula parviflora H. E. and S. T. Parks June 1952 22446 Humboldt Bishop Pine Lodge Trinidad, Bishop Pine Lodge Comment
  UCR263353  Luzula subsessilis Peter F. Zika 2011-7-3 25492 Humboldt Outer North Coast Ranges (NCoRo), Titlow Hill Road, 3.0 road miles SE of Route 299 at Berry Summit, 1 air km SW of Horse Mountain 1310 Comment
  UC1745149  Lycopodium clavatum Clare T. Golec 2000-7-13 Humboldt NE of Blue Lake 182 Comment
  CHSC57533  Lysichiton americanus Michelle Y. Wagner 1990-4-10 16 Humboldt Hope Creek Trail; 5 miles n of Orick. Damp ravine on w side of Hwy 101. 152 Comment
  HSC62983  Lysichiton americanus David Wheeler 1979-4-20 Humboldt Clam Beach Ponds, N pond, 0.25 mi. S of Crannel Rd. between the frontage road and Hwy. 101 Comment
  UC1191231  Lysichiton americanus Malcolm A. Nobs and S. Galen Smith 1949-8-3 1183 Humboldt southern outskirts of Eureka Comment
  UC34916  Lysichiton americanus W. C. Blasdale 1896-6-4 Humboldt Eureka Comment
  HSC91595  Lysichiton americanus E. Mackey 1986-10-7 Humboldt Patrick's Point State Park, near park entrance Comment
  UC1222701  Lysichiton americanus Joseph P. Tracy 1950-7-6 18992 Humboldt lower end of Burr Valley Comment
  JEPS19272  Madia elegans Richard Snow 1957-8-31 306 Humboldt 4 mi n Garberville (at Dean Creek Lodge) Comment
  UC176862  Madia elegans Joseph P. Tracy 1911-7-6 3355 Humboldt between Three Creeks and mouth of Willow Creek 762 Comment
  HSC68000  Madia exigua J. P. Smith, Steve Selva 1970-6-30 4097 Humboldt Comment
  CAS-BOT-BC343017  Madia gracilis Joseph P. Tracy 1937-7-29 15596 Humboldt South Fork Mountain. West slope near top, at Hyampom Trail 1676 Comment
  HSC57180  Madia gracilis Griswold, Butler 1979-7-10 6211 Humboldt Near Kinsey Ridge, close to the town of Willow Creek 1244 Comment
  JEPS7504  Madia gracilis Joseph P. Tracy 1935-7-23 14132 Humboldt at Corral Prairie Trinity Summit 1584 Comment
  HSC98983  Madia gracilis Cara Witte 2007-7-3 403 Humboldt National Forest 1 on Kinsey Ridge. 1 1/2 miles north of intersection with 4N09. 1396 Comment
  UCR123956  Madia madioides George K. Helmkamp, E. A. Helmkamp 2001-7-8 6972 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
  POM284946  Madia madioides Lyman Benson 1929-7-16 1868 Humboldt Weott Ranger Station. Comment
  UCD134335  Madia sativa Linda M. Barker 1976-7-5 1636 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  UC13726  Maianthemum dilatatum W. C. Blasdale 1896-5-31 Humboldt Eureka Comment
  CAS-BOT-BC508504  Maianthemum dilatatum Myrtle Paulson 1918-4-28 s.n. Humboldt Eureka Comment
  HSC15599  Maianthemum dilatatum D. B. Bader 1963-5-1 43 Humboldt Second of the Clam Beach lagoons N end, W of Hwy. 101 Comment
  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
  HSC37816  Maianthemum racemosum subsp. amplexicaule Eugene Andreuccetti 1964-5-2 44 Humboldt On Hwy. 299 at cross of Cedar Creek Comment
  HSC38998  Maianthemum racemosum subsp. amplexicaule Thomas W. Nelson, Jane P. Nelson 1976-5-31 2658 Humboldt County line, S of meadow along 5E27 just N of its junction with 1S07 1524 Comment
  SEINET12050378  Maianthemum racemosum subsp. amplexicaule F. H. Utech 1988-1 88 -270 Humboldt 14 mi W of Bridgeville to Carlotta on CA 36, Mile Marker 11.40, Van Duzen Co. Park (Pamplin Grove) 50 Comment
  HSC70326  Maianthemum stellatum M. A. Baker 1980-6-8 1881 Humboldt Near Buck Flat. 1554 Comment
  HSC33177  Malacothrix floccifera Thomas W. Nelson 1973-8-19 1114 Humboldt McKeown Ranch N of Dinsmore Comment
  POM187937  Malacothrix floccifera Marcus E. Jones 1931-7-16 29095 Humboldt Junction, East of Arcata. Comment
  RSA29747  Malus fusca E. K. Balls 1953-10-12 18634 Humboldt moist ditches, road to Crannell, 0.5 mi. E from Hwy 101, near first overhead bridge. 15 Comment
Read comments
May 24 2020
  HSC97635  Marah oregana Cara Witte 2007-6-4 181 Humboldt Cold Spring. 0.5 mile S of Titlow Hill. 1386 Comment
  JEPS42473  Marah oregana Lincoln Constance 1934-5-31 743 Humboldt from w boundary of Park to Grasshopper Pk.(Squaw Cr.) rd (along n side of creek); South Fork Eel River, Bull Creek Flat Comment
  POM318838  Marah oregana Patricia Wilder 1968-8-22 4419 Humboldt Coastal rain forest 7 miles S of Ferndale on Mattole Road, N of Cape Mendocino and Capetown, Mt. Range: Bear River Ridge; Drainage Area: Oil Creek to Pacific. 549 Comment
  POM67053  Marah oregana Marcus E. Jones 1924-4-26 s.n. Humboldt Eureka. Comment
  HSC7035  Marah oregana D. E. Anderson 1962-3-31 1952 Humboldt Coastal area of Prairie Creek State Park Comment
  JEPS42490  Marah oregana W. L. Jepson and W. W. Mott 1903-6-23 2207 Humboldt White Thorn; s. Humboldt Co. Comment
  UC1199283  Matricaria discoidea Joseph P. Tracy 1933-5-20 12217 Humboldt Capetown 30 Comment
  UC1197424  Medicago lupulina Joseph P. Tracy 1911-7-10 3493 Humboldt near mouth of Willow Creek; Northern Coast Ranges, Valley of Trinity River 152 Comment
  UC1197425  Medicago polymorpha Joseph P. Tracy 1932-5-1 9882 Humboldt vicinity of Garberville Northern Coast Ranges 121 Comment
  UC526914  Melica californica Joseph P. Tracy 1927-5-14 7999 Humboldt near The South Fork (Trinity River Valley); Northern Coast Ranges, Trinity River Valley 182 Comment
  HSC75472  Melica geyeri J. O. Sawyer 1980-7-18 3619 Humboldt North Trinity Mountain Research Natural Area, north of Mill Creek Lake to Red Cap Hole. Comment
  BLMAR525  Melica harfordii Jennifer Wheeler 2009-6-23 525 Humboldt King range, On King Peak road Comment
  HSC98816  Melica harfordii Cara Witte 2007-7-25 581 Humboldt Forest Service Road 5N10. Approximately 2.5 miles south from intersection with Forest Service Road 5N41. 1270 Comment
  UC249877  Melica harfordii Joseph P. Tracy 1923-6-3 6249 Humboldt Kneeland Prairie; Northern Coast Ranges 762 Comment
  CAS-BOT-BC281004  Melica spectabilis Joseph P. Tracy 1932-7-12 10445 Humboldt Klamath Mts,Trinity Summit. At Corral Prairie 1524 Comment
  SEINET10860833  Melica stricta Joseph P. Tracy 1935-7-28 Tracy 14333 Humboldt Shell rock slopes. Trinity Summit. Rocky Exposed Places, Head of Brett Hole. 1829 Comment
  HSC46021  Melilotus albus Catherine Chin 1978-8-5 92 Humboldt 7th & A St., Arcata Comment
  JEPS65552  Melilotus albus Lincoln Constance 1934-5-26 661 Humboldt Dyerville Bridge South Fork Eel River, Bull Creek Region (s end, sand and gravel bar) 45 Comment
  HSC71440  Melilotus albus J. P. Smith 1973-5-26 6793 Humboldt Scotia Bluffs along the Eel River near Rio Dell Comment
  UC162806  Melilotus indicus J. P. Tracy October 1904 2142 Humboldt Immediate vicinity of Eureka 0 Comment
  JEPS63288  Melissa officinalis W. L. Jepson 1932-8-2 16472 Humboldt Dyerville 76 Comment
  SEINET13946829 Image available Mentha arvensis Henry M. Pollard 1945-1 Humboldt Pond near Harley place, Orleans Comment
  POM174071  Mentha canadensis Joseph P. Tracy 1918-9-29 5105 Humboldt South Fork of Eeel River 4 miles above the mouth. Comment
  POM283192  Mentha pulegium Lyman Benson 1929-7-14 1558 Humboldt S. Fork Eel River, Weott Ranger Station Comment
  UC1222666  Mentha spicata Joseph P. Tracy 1950-9-22 19370 Humboldt 8 mi below Orleans (Klamath River near Slate Creek); Klamath River near Slate Creek 121 Comment
  CAS-BOT-BC428713  Micranthes californica Doris K. Kildale 1927-3-20 2925 Humboldt Philipsville, south fork of Eel River Comment
  RSA293124  Micropus californicus Thomas W. Nelson, Jane P. Nelson 1976-5-30 2621 Humboldt McKeown Ranch north of Dinsmore. Comment
  CHSC35518  Micropus californicus var. californicus Thomas Nelson; James Nelson 1976-5-30 2621 Humboldt McKeown Ranch north of Dinsmore. Comment
  CHSC93621  Microseris borealis K. L. Chambers 1957-8-31 1225 Humboldt Lake Prairie, on road from Bald Mt. to Snow Camp, ca. 9 mi. S of Ranger Station. In bog, SE end of the lake. Comment
  UC1223198  Microseris douglasii subsp. douglasii Joseph P. Tracy 1950-7-6 19001 Humboldt 2 mi s Burr Valley (on the Albee Road) 1158 Comment
  CAS-BOT-BC322681  Microseris laciniata Harley P. Chandler 1901-6-1 1408 Humboldt Klamath River 243 Comment
  CHSC62187  Microseris nutans K. L. Chambers 1990-6-23 5515 Humboldt Horse Mtn., off Titlow Hill Rd., s. of Hwy. 299, e. of Arcata. On slope below the parking lot for the winter spots area. 1493 Comment
  HSC75455  Microsteris gracilis J. O. Sawyer 1980-7-18 3596 Humboldt North Trinity Mountain Research Natural Area, north of Mill Creek Lake to Red Cap Hole. Comment
  HSC99590  Microsteris gracilis K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-6-28 259 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
  JEPS10486  Mimulus arvensis Joseph P. Tracy 1926-5-2 7435 Humboldt near South Fork; Trinity River Valley 182 Comment
  UC582708  Mimulus arvensis H. E. Parks and Joseph P. Tracy 1931-5-9 12541 Humboldt near Miranda 60 Comment
  HSC27389  Mimulus aurantiacus var. aurantiacus Thomas W. Nelson 1970-10-31 287 Humboldt Beside railroad tracks at the N end of the Scotia Bluffs Comment
  POM267769  Mimulus aurantiacus var. aurantiacus Lyman Benson 1928-7-9 412 Humboldt Weott Ranger Station, Seaward N Coast mt. range, S Fork Eel River watershed 61 Comment
  HSC20821  Mimulus breweri J. P. Tracy 1932-7-10 10375 Humboldt Trinity Summit 1585 Comment
  HSC45433  Mimulus breweri Thomas W. Nelson, Jane P. Nelson 1978-7-2 4389 Humboldt SE of E peak of the Mount Lassic group 1616 Comment
  HSC20709  Mimulus dentatus R. D. Zortman 1963-5-12 41 Humboldt 5 mi. NE of Arcata, S of the Mad River, off Warren Creek Rd. 91 Comment
  UC1103337  Mimulus douglasii Joseph P. Tracy 1930-5-4 8689 Humboldt Larrabee Valley Northern Coast Ranges 701 Comment
  HSC55348  Mimulus floribundus Griswold, Butler 1979-7-12 7240 Humboldt Near Cedar Creek, close to the town of Willow Creek 1158 Comment
  UC169014  Mimulus floribundus Harley P. Chandler June, 1901 1481 Humboldt between Orleans and Somes Bar; North Coast Ranges, Klamath River 304 Comment
  UC582713  Mimulus inodorus Joseph P. Tracy 1932-7-16 10610 Humboldt Corral Prairie Trinity Summit 1584 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
  UC582701  Mimulus microphyllus Joseph P. Tracy 1933-7-25 12855 Humboldt Grouse Mountain North Coast Ranges 1524 Comment
  RSA447972  Mimulus moschatus Unspecified 1924-7-15 s.n. Humboldt Bull Creek. Comment
  HSC25985  Mimulus pilosus Thomas W. Nelson 1970-9-3 226 Humboldt Mad River. Comment
  JEPS4667  Mimulus pulsiferae Harold E. Parks and Joseph P. Tracy 1934-6-27 11087 Humboldt Grouse Mt. 1432 Comment
  CAS-BOT-BC388625  Minuartia douglasii Doris K. Kildale 1926-4-25 1801 Humboldt Willow Creek Flat 152 Comment
  UC161043  Minuartia pusilla Joseph P. Tracy 1910-4-24 3130 Humboldt Humboldt Bay Northern Coast Region (sand dunes at ocean beach) Comment
  CHSC98379  Mitella caulescens Dean Wm. Taylor 2004-6-24 19138 Humboldt Head of Madden Creek, Ammon Ridge, seepage area along Forest Road 5N15 0.4 miles west of the junction with Forest Road 5N01. 1356 Comment
  HSC96945  Moehringia macrophylla Ryoko Ito, Shauna McDonald 2007-6-13 8 Humboldt 1 mi. from NF1 on FS 5N04 1601 Comment
  RSA20804  Monardella odoratissima Carl B. Wolf 1937-8-13 9269 Humboldt North Coast Range, 12 miles E of Hoopa Valley on new road towards Trinity Summit. 1677 Comment
  UCD125282  Monardella odoratissima John M. Tucker 1948-9-3 1853 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
  BLMAR645  Monardella sheltonii Jennifer Wheeler 2011-8-31 645 Humboldt Lacks creek, Pine Ridge road, spur 3 at Stormy Saddle 1097 Comment
  UC1225847  Monardella villosa subsp. villosa Joseph P. Tracy 1946-7-21 17619 Humboldt Blue Slide Van Duzen River 91 Comment
  HSC62708  Monotropa hypopitys M. A. Baker 1979-7-6 1008 Humboldt Comment
  HSC65194  Monotropa hypopitys T. Jimerson, J. Pageau, L. Banta 1979-6-18 925 Humboldt Waterman Ridge, at the end of FS 7N02, Willow Creek Comment
  UC673013  Montia chamissoi Joseph P. Tracy 1932-7-10 10378 Humboldt Trinity Summit, Corral Prairie Corral Prairie; Trinity Summit, Corral Prairie 1584 Comment
  CAS-BOT-BC444804  Montia diffusa Harley P. Chandler 1901-5-1 1271 Humboldt North Coast Ranges. Redwood Belt 152 Comment
  CAS-BOT-BC444799  Montia diffusa Don Hagar 1956-5-14 59 Humboldt Brush Mt., ca. 6 miles sw. of Willow Creek 914 Comment
  CAS-BOT-BC444832  Montia fontana James Payne Smith, Jr. 1976-2-21 8507 Humboldt Tish Tang Campground Comment
  CAS-BOT-BC233770  Montia howellii Joseph P. Tracy 1916-5-7 4686 Humboldt Eureka 60 Comment
  UC275281  Montia howellii Joseph P. Tracy 1923-6-20 6307 Humboldt White Thorn Valley; Northern Coast Ranges, White Thorn Valley 304 Comment
  HSC97935  Montia linearis Cara Witte 2007-5-21 63 Humboldt White Oak Opening. 1257 Comment
  HSC96218  Montia linearis J. McIntire, S. Lyon 2005-6-3 1 Humboldt 19.3 mi. S of Hwy. 299 on FS Rd. NF1 1280 Comment
  JEPS43174  Montia parvifolia Milo S. Baker 1923-7-31 143 Humboldt Butte's Run; North Coast, Butte's Run Comment
  HSC12368  Morella californica C. E. Fellows 1970-10-7 375 Humboldt McKinleyville 0.25 mi. SW of end of Murray Rd. Comment
  HSC16100  Morella californica P. Markle 1962-5-24 63 Humboldt Edge of 18th St. in Arcata 30 Comment
  UC212880  Muhlenbergia filiformis Joseph P. Tracy 1919-9-18 5233 Humboldt Trinity Summit Northern Coast Ranges 1828 Comment
  UC1222233  Myosotis discolor Joseph P. Tracy 1942-6-15 17116 Humboldt Englewood Prairie Comment
  HSC3743  Myosotis discolor J. R. Good 1964-5-15 42 Humboldt Mad River Park. NE of parking lot, 85 yds. towards Mad River Comment
  HSC6891  Nasturtium officinale Francis Winter 1960-5-14 Humboldt Samoa Peninsula, 6 mi. W of Arcata Comment
  HSC6872  Nasturtium officinale D. E. Anderson 1962-3-24 1947 Humboldt Along Turner Rd. Comment
  UCSB30594  Nasturtium officinale Edwards, David 1974-7-30 Humboldt West side of U.S. 101, ca. 30 yds. S. of 7th St. overpass, Arcata 15 Comment
  UC1198526  Navarretia atractyloides Joseph P. Tracy 1933-7-9 12645 Humboldt Willow Creek Trinity River Valley 152 Comment
  HSC99059  Navarretia capillaris Cara Witte 2007-7-8 436 Humboldt Board Camp Mountain. Trail 4E28. 1498 Comment
  POM208984  Navarretia intertexta Lincoln Constance 1934-5-27 697 Humboldt Sandbar of south fork of Eel River at Dyerville bridge 43 Comment
  UC1198606  Navarretia intertexta Joseph P. Tracy 1936-6-10 14934 Humboldt w of mouth South Fork of Trinity River; South Fork of Trinity River 304 Comment
  CAS-BOT-BC7214  Nemophila macrocarpa William Wightman Price 1890-7-1 s.n. Humboldt Jarnagan Comment
  HSC13586  Nemophila menziesii Doris K. Kildale 1926-4-11 1762 Humboldt Buck Mtn. Comment
  UC249525  Nemophila menziesii var. atomaria Joseph P. Tracy 1922-4-30 6026 Humboldt near Willow Creek (Trinity River Valley); Northern Coast Ranges, , nr Willow Creek 152 Comment
  UC562583  Nemophila menziesii var. atomaria Joseph P. Tracy 1926-5-9 7464 Humboldt Valley of South Yager Creek 762 Comment
  UCR37590  Nemophila menziesii var. atomaria L. P. Janeway 1983-4-16 233 Humboldt Near the old Hwy 299 on W side of Berry Summit 823 Comment
  HSC13577  Nemophila menziesii var. atomaria J. R. Kahl 1962-3-13 11 Humboldt 2 mi. S of Trinidad along old Hwy. 101 Comment
  HSC43113  Nemophila menziesii var. menziesii Maralyn O'Meara 1974-5-14 363 Humboldt Beside Hwy. 299, 14.2 mi. E of Bridgeville Comment
  HSC57706  Nemophila parviflora G. L. Clifton, Griswold 1979-7-25 10955 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1784 Comment
  HSC58023  Nemophila parviflora G. L. Clifton 1979-7-31 11829 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  UC1239687  Nepeta cataria Joseph P. Tracy 1930-8-17 9155 Humboldt Eureka; Northern Coast Ranges 0 Comment
  JEPS12382  Nicotiana quadrivalvis Lincoln Constance 1934-6-18 896 Humboldt border North Dyerville Flat (near South Fork Railroad Station and P.O.); South Fork Eel River, Bull Creek Region Comment
  HSC41308  Notholithocarpus densiflorus Brad Klipfel 1974-7-23 471 Humboldt Horse Mountain Comment
  HSC8077  Notholithocarpus densiflorus F. Sandborg, J. Sandborg 1968-7-19 58 Humboldt Bluff Creek near Notice Creek 793 Comment
  HSC98717  Notholithocarpus densiflorus var. echinoides Cara Witte 2007-8-9 644 Humboldt Along Forest Service Road 5N10. 2 miles east of intersection with National Forest 1. 1334 Comment
  HSC41451  Nuphar polysepala Charles Eugene 1975-11-23 751123 .1 Humboldt Sweasey Lake, 11 mi. NW of Mt. Lassic (Signal Peak) 884 Comment
  HSC62976  Nuphar polysepala David Wheeler 1979-5-18 117 Humboldt Fieldbrook Elementary School, behind the baseball field Comment
  HSC69696  Nuphar polysepala R. Kalal 1980-6-1 10 Humboldt Essex Pond 15 Comment
  HSC77345  Oemleria cerasiformis L. P. Janeway 1983-4-16 230 Humboldt Near the old Hwy. 299 on W side of Berry Summit. 823 Comment
  UC1198788  Oemleria cerasiformis Joseph P. Tracy 1933-5-20 12218 Humboldt Capetown; on Bear River 30 Comment
  UCD127733  Oenanthe pimpinelloides Joseph P. Tracy 1950-6-23 18874 Humboldt Larrabee Creek, 3 miles north of Blocksburg. 457 Comment
  SEINET12119027  Oenanthe sarmentosa J. P. Tracy 1950-1 19348 Humboldt Field's Landing, 2 mi S of town 6 Comment
  HSC93791  Oenothera wolfii D. K. Imper 1986-6-5 21 Humboldt Adjacent to onramp, Hwy. 101 S , S side of Klamath River, S of Klamath 12 Comment
  JEPS10821  Orobanche fasciculata Lincoln Constance 1934-5-29 741 Humboldt Bull Creek Region. South Fork Eel River. Upper Look Prairie, just above Lookout Point. Comment
  JEPS66566  Orthilia secunda Joseph P. Tracy 1932-7-20 10737 Humboldt Trinity Summit, near Corral Prairie 1584 Comment
  CAS-BOT-BC6997  Orthocarpus castillejoides var. humboldtiensis Philip Alexander Munz 1925-6-20 9890 Humboldt Eureka Comment
  CSUSB849  Oxalis oregana Keith Thompson 1972-3-27 Humboldt Maple Cr. 853 Comment
  HSC16702  Oxalis oregana A. E. Inman 1962-5-25 Humboldt E bank of Mad River, W of Camp Bauer Comment
  UC1541318  Oxalis oregana H. E. and S. T. Parks May 1930 743 Humboldt along Van Duzen River Comment
  UCR275105  Oxalis oregana Charity A. Hartshorn 2016-5-14 37 Humboldt Arcata Community Forest 244 Comment
  JEPS43139  Oxalis oregana W. L. Jepson 1932-7-28 16432 Humboldt Bull Creek Flat Comment
  UC203882  Oxalis oregana Joseph P. Tracy 1918-5-28 4940 Humboldt e Bald Mt. (High Prairie Creek); Northern Coast Ranges 914 Comment
  SEINET3347146 Image available Oxalis suksdorfii Joseph P. Tracy 1930-6-22 8796 Humboldt Redwood Creek, at Berry's Comment
  UC725500  Oxalis trilliifolia A. A. Heller 1923-7-10 13787 Humboldt Humboldt Camp between Scotia and Pepperwood Comment
  CAS-BOT-BC318150  Packera bolanderi var. bolanderi J. Burtt Davy; W. C. Blasdale 1899-6-12 5453 Humboldt near Elk Prairie Comment
  HSC32567  Panicum acuminatum var. fasciculatum Thomas W. Nelson 1973-9-3 1120 Humboldt McKeown Ranch N of Dinsmore Comment
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Jul 8 2015
  UC183455  Panicum capillare Joseph P. Tracy 1911-7-7 3407 Humboldt three mi nw of junction of Willow Creek with Trinity River (near Beebe's Ranch); Northern Coast Ranges, near Beebe's Ranch 914 Comment
  UCD89768  Panicum oligosanthes var. scribnerianum Joseph P. Tracy 1939-4-29 16246 Humboldt Klamath River, near Slate Creek. 8 miles below Orleans. 121 Comment
  RSA624797  Parapholis strigosa Gordon Leppig 1998-6-6 801 Humboldt Arcata, Arcata Marsh and Wildlife Sanctuary, Butchers Slough about 50m w of Interpretive Center 1 Comment
  UC169890  Paxistima myrsinites Joseph Burtt Davy and Walter C. Blasdale 1899-6-21 5754 Humboldt Trinity Summit Comment
  UC1239629  Pectocarya pusilla Joseph P. Tracy 1926-5-2 7428 Humboldt near South Fork; Northern Coast Ranges, Trinity River Valley 182 Comment
  HSC20922  Pedicularis densiflora P. W. Shields May 1955 Humboldt 5 mi. W of Willow Creek Comment
  HSC76045  Pedicularis racemosa Walter Overton, Marvin Butler 1979-8-2 12563 Humboldt Near Bret Hole, close to the town of Hoopa. 1554 Comment
  CAS-BOT-BC69342  Pellaea brachyptera L. B. Kildale 1930-8-3 10346 Humboldt Chaparral Mt. at Bug Creek 914 Comment
  HSC99467  Penstemon anguineus K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-14 121 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  UCR133559  Penstemon anguineus Milo S. Baker 1947-8-10 11911 Humboldt near end of Forest Rd from Hoopa towards Trinity Summit 1372 Comment
  RSA21319  Penstemon azureus subsp. azureus Carl B. Wolf 1937-8-13 9220 Humboldt North coast range, 8 mi. east of Hoopa Valley on new road towards Trinity summit. 1220 Comment
  JEPS5714  Penstemon newberryi var. berryi W. L. Jepson 1902-7-16 2107 Humboldt Trinity Summit Comment
  HSC1080  Pentagramma triangularis D. E. Anderson 1963-3-16 2389 Humboldt Scotia Bluffs Comment
  HSC63229  Pentagramma triangularis M. A. Baker 1979-5-6 470 Humboldt Weitchpec. Comment
  UCD137780  Pentagramma triangularis K. Esau 1934-5-8 s.n. Humboldt Above Fort Seward. 457 Comment
  UC1197318  Perideridia gairdneri subsp. borealis Joseph P. Tracy 1948-9-5 18167 Humboldt ne Hawkins Bar; Trinity Summit Range, Happy Camp Mountain 1280 Comment
  UC154075  Perideridia gairdneri subsp. borealis J. P. Tracy Aug 26 1900-May 12 1901 Humboldt near Eureka; Immediate vicinity of Eureka 0 Comment
  HSC98551  Perideridia howellii Cara Witte 2007-8-1 613 Humboldt White Oak Opening. Along Kinsey Ridge. 1257 Comment
  SEINET200761  Perideridia lemmonii Joseph Tracy 1920-11-14 5411 Humboldt Dow's Prairie 61 Comment
  CAS-BOT-BC413712  Persicaria hydropiper Carl D. Duncan 1920-9-22 s.n. Humboldt Hoopa Valley Comment
  CAS-BOT-BC419192  Persicaria maculosa L. R. Abrams 1918-6-16 7193 Humboldt Willow Creek Comment
  RSA183572  Petasites palmatus R. I. Bonn 1965-3-5 4 Humboldt 4 miles west of Arcata on Samoa Road. Comment
  UC169010  Phacelia bolanderi Harley P. Chandler June 1901 1456 Humboldt between Bluff Creek and Orleans; North Coast Ranges 304 Comment
  SEINET3119233 Image available Phacelia bolanderi Bassett Maguire, Ruth Maguire, C. B. Maguire 1934-6-8 15225 Humboldt Bolling Grove State Park. Comment
  BLMAR591  Phacelia egena Jennifer Wheeler 2010-7-13 591 Humboldt King range, Panther Gap Road 792 Comment
  UC176055  Phacelia egena Joseph P. Tracy 1913-6-25 4337 Humboldt opposite Buck Mountain; Northern Coast Ranges, valley of Van Duzen River 762 Comment
  HSC102541  Phacelia hastata subsp. hastata M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-28 1527 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1106 Comment
  JEPS2079  Phacelia heterophylla subsp. virgata Lincoln Constance 1934-5-29 731 Humboldt Upper Look Prairie South Fork Eel River, Bull Creek region 365 Comment
  UC660089  Phacelia heterophylla subsp. virgata G. L. Stebbins Jr. 1941-5-27 3111 Humboldt 1/4 mi w Bridgerville (on hwy to Eureka) Comment
  HSC57184  Phacelia mutabilis Griswold, Butler 1979-7-10 6383 Humboldt Near Board Camp Mtn., close to the town of Willow Creek 1372 Comment
  HSC57855  Phacelia mutabilis G. L. Clifton 1979-7-31 11371 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  UC562576  Phacelia procera Joseph P. Tracy 1932-7-12 10431 Humboldt Corral Prairie Trinity Summit 1584 Comment
  UC526832  Phalaris aquatica Joseph P. Tracy 1927-9-18 8366 Humboldt Carlotta; Northern Coast Ranges, Carlotta 60 Comment
  CAS-BOT-BC76570  Philadelphus lewisii Doris K. Kildale 1927-8-7 3864 Humboldt Kneeland Prairie 762 Comment
  UC181260  Phleum alpinum Joseph P. Tracy 1913-7-20 4376 1/2 Humboldt ridge between Redwood Creek and Three Creeks (on Berry's ranch); Northern Coast Ranges, btw Redwood Creek and Three Creeks 914 Comment
  UC906757  Phlox adsurgens Joseph P. Tracy 1942-6-23 17233 Humboldt near Box Camp; Trinity Summit 1524 Comment
  JEPS71116  Phlox gracilis Joseph P. Tracy 1930-6-21 8791 Humboldt Larrabee Valley Northern Coast Ranges 701 Comment
  UC1541553  Phlox gracilis H. E. Parks, J. P. Tracy 1930-5-25 795 Humboldt Laribee Valley 762 Comment
  HSC62687  Phoradendron serotinum subsp. macrophyllum Michelle Stevens 1979-5-12 146 Humboldt Just before Camp Bauer in Korbel along the N Fork of the Mad River Comment
  RSA46805  Physocarpus capitatus Doris K. Kildale 1927-5-15 3158 Humboldt Petrolia Comment
  UC1198699  Physocarpus capitatus Joseph P. Tracy 1933-6-25 12619 Humboldt along Eel River Camp Grant (3 mi above junction of South Fork) 60 Comment
  POM281983  Picea sitchensis Lyman Benson 1928-7-10 445 Humboldt Dunes at Clam Beach, Arcata to Trinidad. 15 Comment
  RSA175261  Picea sitchensis Robert F. Thorne 1957-9-3 19011 Humboldt Little River Beach, few miles S of Trinidad. Comment
  RSA246848  Picea sitchensis Robert F. Thorne, P. Everett 1965-8-7 35200 Humboldt Big Lagoon, south end. 2 Comment
  SBBG24465  Picea sitchensis J. W. Howe -Mar-1938 Humboldt [label without specific locality] Comment
  RSA0116907  Picea sitchensis Lyman Benson 1949-9-4 14188 Humboldt Bishop Pine Lodge, 5 miles North of Trinidad. Mt. Range: North Coast Ranges. 15 Comment
  CAS-BOT-BC78288  Pinus attenuata A. A. Heller 1917-7-7 12811 Humboldt Alder Springs grade below Rattlesnake [spring] Spring Comment
  HSC1483  Pinus contorta R. I. Bonn 1965-5-9 46 Humboldt 4 mi. W of Arcata on Lanphere Rd. Comment
  HSC44319  Pinus monticola Brad Klipfel 1975-6-17 670 Humboldt Horse Mtn. Comment
  HSC95784  Pinus monticola Will Ferrand 2002-4-27 37 Humboldt Off Titlow Hill Rd. 0.75 mi. S of intersection of Titlow Rd. and Hwy. 299 884 Comment
  UC55658  Pinus ponderosa P. E. Goddard 1901-7-12 67 Humboldt Hupa Comment
  POM208985  Piperia candida Lincoln Constance 1934-5-27 708 Humboldt Humboldt Redwood Park, in Border Forest, bluff above Bull Creek, Flat Grove 61 Comment
  UC180192  Piperia elegans Joseph P. Tracy 1914-8-30 4596 Humboldt Humboldt Bay Northern Coast Region Comment
  UC14946  Piperia unalascensis Joseph Burtt Davy and Walter C. Blasdale 1899-6-21 Humboldt Supply Creek, Hoopa Valley North Coast Ranges, Hoopa Mt. Comment
  HSC40374  Pittosporum tenuifolium Linda M. Barker 1976-10-7 1703 Humboldt 3 mi. W of Arcata. 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
  HSC41226  Plagiobothrys cognatus Thomas W. Nelson, Jane P. Nelson 1977-6-14 3496 Humboldt Above Alder Springs 1585 Comment
  HSC79417  Plagiobothrys nothofulvus Kenneth Clark 1980-4-18 585 Humboldt On Coastal Bluffs above Dead Man's Gulch 137 Comment
  RSA80192  Plagiobothrys reticulatus Alice Eastwood, J. T. Howell 1937-6-23 4811 Humboldt Little Van Duzen River. Comment
  JEPS60973  Plagiobothrys reticulatus Joseph P. Tracy 1916-5-31 4691 Humboldt Holmes Flat, along Eel River from South Fork to Scotia Northern Coast Ranges, Eel River 60 Comment
  UC667004  Plagiobothrys reticulatus Joseph P. Tracy 1939-4-18 16214 Humboldt w side South Fork Eel River at Garberville; w side South Fork Eel River, Garberville 152 Comment
  JEPS60990  Plagiobothrys reticulatus var. reticulatus Joseph P. Tracy 1912-6-9 3680 Humboldt Alton Northern Coast Region 30 Comment
  SEINET12275869  Plagiobothrys scouleri J. P. Tracy 1949-1 18315 Humboldt Fickle Hill, 6 mi SE of Arcata 610 Comment
  UC179952  Plantago lanceolata Joseph P. Tracy 1914-5-30 4484 Humboldt near Hydesville; Northern Coast Region 60 Comment
  UC429188  Platanthera Franklin P. Nutting Humboldt Bridge Creek, n California Bridge Creek Comment
  HSC74221  Platanthera dilatata var. leucostachys M. A. Baker 1980-7-22 3121 Humboldt Near Grogan Hole. 1676 Comment
  RSA12545  Platanthera leucostachys Carl B. Wolf 1934-7-2 5893 Humboldt At small lake at Snow Camp (Mtns E of Korbel) 1372 Comment
  UC1409180  Platanthera leucostachys Robert F. Thorne and P. Everett 1965-8-7 35172 Humboldt s end Big Lagoon 1 Comment
  JEPS79897  Platanthera leucostachys Joseph P. Tracy 1933-7-25 12842 Humboldt in bog Grouse Mountain 1524 Comment
  HSC99365  Platanthera sparsiflora K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-6-24 14 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  HSC104447  Platystemon californicus Jeff Barrett, Keleigh Deitsch, Tessa Purdy 2014-4-13 23 Humboldt Samoa Peninsula, Fairhaven, along south side of Bay Street 5 Comment
  UC146076  Platystemon californicus Joseph P. Tracy 1904-4-24 2020 Humboldt sand dunes of Ocean Beach Ocean Beach (Humboldt Bay); Northern Coast Region, , Ocean Beach Comment
  UC146105  Platystemon californicus Joseph P. Tracy 1904-4-24 2020 Humboldt sand dunes of Ocean Beach Ocean Beach (Humboldt Bay); Northern Coast Region, , Ocean Beach Comment
  UC229824  Platystemon californicus Joseph P. Tracy 1922-5-29 6071 Humboldt head of South Yager Creek; Northern Coast Ranges, head of South Yager Creek 762 Comment
  SEINET5340052  Platystemon californicus J. Tracy 1904-4-24 2020 Humboldt Sand Dunes of ocean beach at Humboldt Bay. Comment
  UC168964  Plectritis brachystemon Joseph P. Tracy 1909-7-31 3034 Humboldt Northern Coast Ranges, Kneeland Prairie Kneeland Prairie; Northern Coast Ranges, Kneeland Prairie 762 Comment
  UC718183  Plectritis brachystemon Carl B. Wolf 1937-6-14 8814 Humboldt North Coast Range, Kneeland Prairie Kneeland Prairie; North Coast Range, Kneeland Prairie 822 Comment
  HSC37515  Plectritis congesta A. M. Montalvo, J. D. Ackerman 1975-6-22 488 Humboldt 6.4 mi. W of Dinsmore along Hwy. 36 Comment
  UC1239596  Plectritis congesta Joseph P. Tracy 1935-6-23 13974 Humboldt French Camp Ridge 1066 Comment
  HSC59394  Plectritis congesta Rick Lundquist 1979-4-27 49 Humboldt N Spit, across from Samoa boat ramp N of U.S. Coast Guard Station. 0 Comment
  HSC96230  Plectritis congesta subsp. brachystemon Kaylea Eickhoff, Cara M. Witte 2005-6-3 2 Humboldt 19.3 mi. S of Hwy. 299 on NF1 1240 Comment
  HSC96284  Plectritis congesta subsp. congesta J. Breton, A. Livingston 2005-6-8 5 Humboldt 2.0 mi. S of Hwy. 299 on Titlow Rd. 1032 Comment
  HSC23046  Poa annua D. E. Anderson 1970-5-21 Humboldt Scotia Bluffs, across the river from Rio Dell-Scotia. Comment
  CAS-BOT-BC254715  Poa bolanderi Joseph P. Tracy 1930-7-16 8902 Humboldt South Fork Mountain: near McKay Camp 1676 Comment
  HSC10658  Poa bulbosa D. J. Wilder 1965-5-15 36 Humboldt 2 mi. E of Freshwater on Rd. to Kneeland. Comment
  CHSC10126  Poa douglasii J. W. Johnson 1961-8-17 1028 Humboldt On a dune, W.M. Lanphere Farm, Samoa Peninsula. Comment
  UC70825  Poa douglasii Joseph Burtt Davy and Walter C. Blasdale 1899-7-30 6181 Humboldt Ferndale Comment
  CAS-BOT-BC254282  Poa macrantha S. K. Harris 1936-6-15 3383 Humboldt Trinidad Head Comment
  SEINET190491 Image available Poa macrantha H. E. Parks 1934-5-1 4805 Humboldt Little River Lagoon Comment
  HSC73058  Poa pratensis M. A. Baker 1980-7-22 3110 Humboldt Near Grogan Hole. 1676 Comment
  RSA44525  Poa pratensis Henry M. Pollard 1948-7-17 s.n. Humboldt Orleans. Comment
  UCD91937  Poa pratensis A. Murphy 1951-5-18 s.n. Humboldt W. Roscoe Ranch, Upper Mattole, near Mattole River. Comment
  UC1132739  Poa pratensis subsp. pratensis H. L. Person 1932-5-11 Humboldt Arcata; Eureka Quadrangle Comment
  CAS-BOT-BC255018  Poa secunda R. K. Gierisch; D. H. Esplin 1969-7-1 3537 Humboldt Grouse Mountain, Six Rivers 1584 Comment
  HSC74129  Poa secunda subsp. secunda R. York 1980-5-23 618 Humboldt Near Buck Mtn. 1524 Comment
  UC180501  Poa secunda subsp. secunda Joseph P. Tracy 1913-6-14 4121 Humboldt opposite Buck Mt (Dinsmore's Ranch); Northern Coast Ranges, valley of Van Duzen River 762 Comment
  HSC31788  Poa trivialis Donald Spalinger 1974-4-20 20 Humboldt Across from 1756 Ridgewood Dr. 122 Comment
  RSA129470  Poa trivialis H. S. Yates 1936-6-16 5683 Humboldt Near Bayside 9 Comment
  UC17439  Polygala californica C. C. Marshall 1888-1 Humboldt Eel River Region Comment
  HSC100599  Polygala cucullata Carl C. Marshall Jun 1887 408 Humboldt Dobbyn's Creek. Comment
  HSC55014  Polygonum douglasii Overton, Butler 1979-7-31 11405 Humboldt Near Water Dog Lakes, close to the town of Hoopa 1830 Comment
  CAS-BOT-BC414466  Polygonum douglasii Doris K. Kildale 1925-8-17 1231 Humboldt Trinity Summit - Waterdog Lake 1828 Comment
  UC672935  Polygonum douglasii Joseph P. Tracy 1932-8-21 10366 Humboldt Three Cabins North Coast Ranges, Chararral Mountain (w foothills of mt.) 457 Comment
  UC205478  Polygonum douglasii subsp. douglasii Joseph P. Tracy 1919-9-18 5236 Humboldt Trinity Summit Northern Coast Ranges 1828 Comment
  UC672962  Polygonum douglasii subsp. douglasii Joseph P. Tracy 1933-8-30 13042 B Humboldt Grouse Mountain 1524 Comment
  UC672950  Polygonum lapathifolium Joseph P. Tracy 1930-10-12 9204 Humboldt Humbolt to Fortuna (on gravel bars); Eeel River 15 Comment
  CHSC32964  Polygonum paronychia J. P. Smith; Advanced Taxonomy Class 1971-10-6 4957 Humboldt Dunes at the end of Murray Road in McKinleyville. Comment
  RSA191950  Polygonum paronychia Robert F. Thorne 1957-9-3 19013 Humboldt Little River Beach, few miles S of Trinidad. Comment
  HSC98594  Polygonum phytolaccifolium Cara Witte 2007-7-11 506 Humboldt Grouse Mountain. Forest Service Road 5N04. Near spring. 1583 Comment
  UC162921  Polygonum punctatum Joseph P. Tracy 1911-7-8 3473 Humboldt Clover Flat mine Northern Coast Ranges, Valley of Trinity River (along streamlet, near mouth of Willow Creek) 152 Comment
  HSC98687  Polygonum sawatchense subsp. oblivium Cara Witte 2007-7-5 420 Humboldt National Forest 1. 1.5 miles southeast of Forest Service Road 5N09. 1578 Comment
  HSC98633  Polygonum spergulariiforme Cara Witte 2008-8-5 983 Humboldt Buck Flat. Intersection of National Forest 1 and Forest Service Road 5N01. 1569 Comment
  UC57306  Polypodium calirhiza J. P. Tracy 1901-1-27 985 Humboldt sand hill of Ocean Beach at Samoa (opposite Eureka) Comment
  HSC67085  Polypodium glycyrrhiza Richard Spjut 1980-5-20 6199 Humboldt 2 mi. W of Willow Creek along Hwy. 299 below Boise Campground near stream 305 Comment
  JEPS33247  Polypodium glycyrrhiza Lincoln Constance 1934-5-31 748 Humboldt Bull Creek Region, S. Fork Eel R. Comment
  UCSB29329  Polypodium glycyrrhiza Phelps, M. 1972-3-22 Humboldt 1000 yds. east of Whitehom turnoff, along Shelter Cove Rd. 304 Comment
  CAS-BOT-BC72085  Polypodium scouleri W. R. Dudley 1899-1-1 s.n. Humboldt Trinidad Head Comment
  CHSC94935  Polypodium scouleri K. Lang; J. Lang 2005-3-17 31 Humboldt Fern Canyon, near Orick. 15 Comment
  CAS-BOT-BC233074  Polypogon interruptus Joseph P. Tracy 1927-7-16 8260 Humboldt Eureka 60 Comment
  UC526772  Polypogon interruptus Joseph P. Tracy 1927-7-16 8259 Humboldt Eureka; Northern Coast Ranges, Eureka 0 Comment
  UCD136476  Polystichum californicum Lincoln Constance 1934-6-4 824 Humboldt Bull Creek Region, South Fork Eel River. Comment
  UC906748  Polystichum imbricans subsp. imbricans Joseph P. Tracy 1947-7-9 17842 Humboldt Horse Mt. 1432 Comment
  CAS-BOT-BC76663  Polystichum munitum Doris K. Kildale 1928-12-30 6764 Humboldt Phillipsville Comment
  HSC70930  Polystichum munitum R. York 1980-5-18 559 Humboldt Near Black Mtn. 1006 Comment
  HSC35693  Polystichum munitum Thomas W. Nelson 1975-1-16 1749 Humboldt E of HSU campus Comment
  UC249776  Polystichum munitum Joseph P. Tracy 1924-8-10 6803 Humboldt Van Duzen River near Strongs Station; Northern Coast Ranges Comment
  CAS-BOT-BC102905  Populus trichocarpa Doris K. Kildale 1926-3-24 1618 Humboldt Lindsey Creek bridge - Lower Mad River 26 Comment
  HSC31655  Populus trichocarpa Timothy B. Devine 1974-5-4 325 Humboldt Mad River floodplain 1 mi. from Blue Lake on Hatchery Rd. 305 Comment
  UC176692  Populus trichocarpa Joseph P. Tracy 1913-6-22 4261 A Humboldt opposite Buck Mountain (Dinsmore's Ranch); Northern Coast Ranges, valley of Van Duzen River 762 Comment
  UC297845  Potamogeton foliosus H. E. Parks 1923-5-30 1758 Humboldt Eureka Comment
  SEINET3892866  Potamogeton natans Marla J. Carollo 1979-5-17 086 Humboldt East of Little River Beach State Park, so. of Hwy 101.; 0 Comment
  CAS-BOT-BC453908  Potamogeton pectinatus Henry M. Pollard 1946-8-13 s.n. Humboldt Near Harley place, Orleans region Comment
  UCD149951  Potamogeton richardsonii William Anderson; H. Mc. 1964-8-5 s.n. Humboldt Freshwater Lagoon. Comment
  CAS-BOT-BC143072  Potentilla anserina subsp. pacifica Kenneth Clark 1980-5-10 652 Humboldt Western beach of Point Delgada 3 Comment
  HSC44544  Potentilla gracilis var. fastigiata Brad Klipfel 1973-7-15 163 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC56433  Prunella vulgaris subsp. lanceolata Griswold, Butler 1979-7-12 7145 Humboldt Near Groves Prairie, close to the town of Willow Creek. 1256 Comment
  UC1196728  Prunella vulgaris var. lanceolata J. P. Tracy 1900-7-22 903 Humboldt immediate vicinity Eureka 0 Comment
  UC577391  Prunella vulgaris var. lanceolata Joseph P. Tracy 1937-6-28 15370 Humboldt Trinity River Valley at Willow Creek; Trinity River Valley at Willow Creek 152 Comment
  POM283387  Prunella vulgaris var. lanceolata Lyman Benson 1928-7-12 404 Humboldt Weott Ranger Station; Mt.Range: Seaward N Coast; Watershed: South Fork Eel River. 61 Comment
  RSA245006  Prunella vulgaris var. lanceolata William J. Ferlatte 1966-6-15 2093 Humboldt Near Bridgeville Comment
  UC1288490  Prunella vulgaris var. lanceolata Andrew P. Nelson 1960-12-28 687 Humboldt n Weott (Avenue of the Giants, Humboldt Redwoods State Park); Humboldt Redwoods State Park, Avenue of the Giants Comment
  HSC38513  Prunus emarginata D. E. Anderson, J. P. Smith 1971-6-18 1087 Humboldt Horse Mtn. Comment
  JEPS44944  Prunus emarginata Joseph P. Tracy 1917-5-6 4780 Humboldt at Eureka Eureka; Northern Coast Ranges, Eureka 0 Comment
  POM161041  Prunus emarginata Joseph P. Tracy 1919-9-24 5296 Humboldt Trinity Summit 1829 Comment
  UC492201  Prunus emarginata Joseph P. Tracy 1932-7-13 10527 Humboldt at Corral Prairie, Trintiy Summit, Klamath Mountains Corral Prairie; Klamath Mountains, Trintiy Summit 1524 Comment
  UC165857  Pseudognaphalium californicum Joseph P. Tracy 1901-7-31 1232 Humboldt near Hydesville; Northern Coast Region 60 Comment
  UC582515  Pseudognaphalium ramosissimum Joseph P. Tracy 1936-8-24 15169 Humboldt 6 mi se Arcata; Fickle Hill 609 Comment
  UCD134980  Pseudognaphalium ramosissimum Linda M. Barker 1976-8-2 1678 Humboldt 3 miles west of Arcata. Comment
  BLMAR704  Pseudognaphalium stramineum Jennifer Anthony-Wheeler 1994-9-8 704 Humboldt Samoa dunes, growing atop a knoll/dune with I the Samoa Pen. Rare plant area 15 Comment
  UCD20403  Pseudognaphalium thermale Donald C. Hagar 1957-8-15 199 Humboldt 4.5 miles NE of Salyer, Cedar Creek Divide, 3500 ft. elev. 1066 Comment
  CAS-BOT-BC80120  Pseudotsuga menziesii Doris K. Kildale 1926-11-27 2840 Humboldt Alton Hill, old terrace above lower Van Duzen River Comment
  SEINET4207976  Psoralea physodes Thomas Nelson, Jane Nelson 1977-7-1 3573 Humboldt Growing on dry road cut along road 2S08 below Goat Hill.; 0 1524 Comment
  HSC1163  Pteridium aquilinum var. pubescens R. I. Bonn 1965-5-9 41 Humboldt 4 mi. W of Arcata on Lanphere Rd. Comment
  RSA475262  Pteridium aquilinum var. pubescens Lyman Benson 1928-7-9 408 Humboldt Weott Ranger Station. Seaward N Coast Mtn range, S Fork Eel River. 61 Comment
  CAS-BOT-BC460504  Pterospora andromedea Doris Kildale Gillespie 1931-6-7 10662 Humboldt South Fork Mt., Blake Lookout 1726 Comment
  HSC69767  Pyrola aphylla Thomas W. Nelson, Jane Nelson 1977-9-3 3715 Humboldt J.E. Losey property above junction of Kneeland-Maple Creek Rd. 671 Comment
  UC179964  Pyrola asarifolia Joseph P. Tracy 1914-7-5 4552 Humboldt Bald Mountain, between High Prairie and Snow Camp. 1066 Comment
  HSC40515  Pyrola asarifolia subsp. asarifolia M. A. Baker 1977-5-14 289 Humboldt Along Patrick's Point Drive 1/2 mi. N of Trinidad 30 Comment
  HSC41317  Pyrola picta Brad Klipfel 1974-9-2 535 Humboldt Horse Mtn. Comment
  UC1197577  Pyrola picta Joseph P. Tracy 1933-7-25 12876 Humboldt North Coast Ranges, Grouse Mountain Grouse Mountain; North Coast Ranges, Grouse Mountain 1524 Comment
  CAS-BOT-BC62628  Quercus chrysolepis Doris K. Kildale 1926-12-26 2880 Humboldt Kneeland Prairie 853 Comment
  CAS-BOT-BC94316  Quercus garryana Doris K. Kildale 1926-9-7 2630 Humboldt Lassech's Peaks - head of Red Lassechs Creek 1661 Comment
  UC1196516  Quercus garryana Joseph P. Tracy 1935-10-6 14754 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  UC54686  Quercus garryana Joseph Burtt Davy and Walter C. Blasdale Jun 21 1899-Jun 23 1899 5854 Humboldt Trinity Summit, at lake near the top North Coast Ranges Comment
  SEINET12034478  Quercus garryana K. S. Erdman 1970-1 4764 Humboldt Schoolhouse Peak on Bald Hills Road about 16 mi S of Orick,T9N,R2E,Sec24 914 Comment
  CAS-BOT-BC105169  Quercus kelloggii Doris K. Kildale 1930-4-13 9579 Humboldt Bridgeville 289 Comment
  JEPS37758  Quercus kelloggii W. L. Jepson 1903-6 2203 Humboldt Harris Ridge 1127 Comment
  UC502987  Quercus kelloggii Joseph P. Tracy 1929-4-28 8542 Humboldt Willow Creek Northern Coast Ranges, Trinity River Valley 152 Comment
  UCD40029  Quercus kelloggii Rodney Gale Myatt 1971-9-17 1109 Humboldt Near Phillipsville, above river. About 8 mi. north of Garberville, along Hwy 101. Comment
  UCD165090  Quercus parvula var. shrevei Lois W. Weeth; Kerry Heise and John M. Tucker 2003-10-21 s.n. Humboldt 24.5 mi. from Garberville along Alderpoint Rd. 174 Comment
  SBBG115525  Quercus sadleriana G. J. Muth 1972-8-15 1845 Humboldt near Big Hill Rd 1431 Comment
  JEPS55034  Ranunculus alismifolius var. alismellus W. L. Jepson July, 1902 2106 Humboldt Trinity Summit 2133 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
  HSC74708  Ranunculus aquatilis var. aquatilis Gail Newton 1981-8-6 2400 Humboldt Near Humbug Creek 1256 Comment
  CAS-BOT-BC379174  Ranunculus aquatilis var. aquatilis Elizabeth Parsons Hawver 1915-6-1 s.n. Humboldt Carlotta Comment
  CAS-BOT-BC379200  Ranunculus aquatilis var. aquatilis Volney Rattan 1879-1-1 s.n. Humboldt Ferndale Comment
  UC162339  Ranunculus aquatilis var. capillaceus Joseph P. Tracy 1911-7-7 3395 Humboldt three mi nw junction of Willow Creek with Trinity River (near Beebe's Ranch); Northern Coast Ranges 914 Comment
  HSC18117  Ranunculus aquatilis var. diffusus D. E. Anderson 1965-5-15 3712 Humboldt Along Hwy. 96, 1.9 mi. N of Willow Creek Comment
  UC1196220  Ranunculus occidentalis Joseph P. Tracy 1908-6 2688 1/2 Humboldt opposite Buck Mountain; Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  HSC73606  Ranunculus occidentalis var. occidentalis M. A. Baker 1980-7-22 3118 Humboldt Near Grogan Hole. 1676 Comment
  POM126167  Ranunculus orthorhynchus Joseph P. Tracy 1922-5-21 6050 Humboldt Fieldbrook. 61 Comment
Read comments
Oct 27 2009
  UC1196248  Ranunculus orthorhynchus var. orthorhynchus Joseph P. Tracy 1921-6-12 5827 Humboldt Butler Valley Northern Coast Ranges 152 Comment
  UC162870  Ranunculus orthorhynchus var. orthorhynchus Joseph P. Tracy 1908-6-7 2614 Humboldt Butler Valley Northern Coast Ranges, Mad River 152 Comment
  UC503047  Ranunculus parviflorus Joseph P. Tracy 1927-5-21 8067 Humboldt Carlotta Northern Coast Ranges (roadside) 60 Comment
  UC668062  Ranunculus repens Joseph P. Tracy 1938-5-8 15740 Humboldt 4 mi e Carlotta 30 Comment
  SD93107  Ranunculus repens W. Bertsch 1953-7-30 Humboldt Five miles north of Arcata Comment
  HSC18179  Ranunculus repens var. repens Harvey Doerksen 1962-5-8 22 Humboldt 3 mi. W of Blue Lake, fork of Lindsay Creek and Mad River Comment
  HSC6887  Raphanus sativus S. J. Hawks 1965-4-3 12 Humboldt W of Eureka City Airport Comment
  HSC28225  Raphanus sativus Thomas W. Nelson 1971-4-12 374 Humboldt Hookton Rd. at the junction of Copenhagen Rd. Comment
  UC1197986  Rhamnus californica Joseph P. Tracy 1918-9-29 5111 Humboldt Myer's Ranch Northern Coast Ranges, South Fork Eel River 60 Comment
  UC709447  Rhamnus californica subsp. occidentalis Joseph P. Tracy 1941-9-4 17012 Humboldt along Trinity Highway Willow Creek Canyon 609 Comment
  RSA2933  Rhamnus purshiana Carl B. Wolf 1931-8-30 2373 Humboldt E side of Eureka on P st, on block N of Henderson Street. 30 Comment
  HSC7873  Rhododendron macrophyllum P. Markle 1962-5-22 54 Humboldt End of 18th St., Arcata Community Forest Comment
  HSC7878  Rhododendron macrophyllum D. E. Anderson 1961-8-11 1732 Humboldt E of Humboldt State University campus 30 Comment
  OBI33909  Rhododendron occidentale David J. Keil 1983-7-2 17313 Humboldt Ca. 4 mi SE of SR 299 along Titlow Hill rd below Horse Mountain Summit rd Comment
  UC1173683  Rhododendron occidentale Joseph P. Tracy 1939-7-9 16319 Humboldt Bald Mountain, at Lake Prairie Lake Prairie; Bald Mountain, Lake Prairie 1066 Comment
  CAS-BOT-BC200387  Rhododendron occidentale var. paludosum Harley P. Chandler 1901-6-1 1448 Humboldt Klamath River 457 Comment
  CAS-BOT-BC200390  Rhododendron occidentale var. paludosum Carl B. Wolf 1927-8-28 1174 Humboldt On the grade 9 mi. from Willow Creek, Lord Ellis Road to Blue Lake Comment
  HSC44449  Rhododendron occidentale var. paludosum Brad Klipfel 1975-5-30 655 Humboldt N of Horse Mtn. Comment
  HSC7887  Rhododendron occidentale var. paludosum F. B. Plett 1963-4-27 36 Humboldt 1 1/2 mi. N of Trinidad along old Hwy. 101 Comment
  UCD116925  Rhus aromatica M. Wiesendanger 1928-4-7 931 Humboldt Near Blue Lakes. Comment
  CAS-BOT-BC433133  Ribes Doris K. Kildale; L. B. Kildale 1930-4-27 9565 Humboldt Prairie Creek near Orick Comment
  RSA24301  Ribes bracteosum Carl B. Wolf 1941-2-25 9958 Humboldt Freshwater lagoon. 30 Comment
  RSA273318  Ribes bracteosum M. A. Baker 1977-4-23 174 Humboldt 2.5 miles South of Shelter Cove Road. South fork of Bear Creek at Wailaki Campground. 561 Comment
  UC1046563  Ribes bracteosum R. Bacigalupi, L. Constance, J. P. Tracy, R. Moran, R. L. Rodriguez, and S. Carlquist 1951-6-14 3407 Humboldt near High Prairie (on long high ridge between Mad River and Redwood Creek); Bald Mountain 1066 Comment
  UC1225766  Ribes divaricatum var. pubiflorum Joseph P. Tracy 1941-3-26 16813 Humboldt opposite mouth Willow Creek (Lack Pond); Trinity River Valley 152 Comment
  HSC103224  Ribes inerme var. klamathense Jade Paget-Seekins 2010-5-20 16 Humboldt Off Forest Route 16 (between Big Bar and Hayfork) , approx. 0.6 miles up the 4N29. 1028 Comment
  HSC102026  Ribes lacustre M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-12 927 Humboldt Along trail from Rustic Camp to Patterson Meadows 1534 Comment
  HSC56246  Ribes lacustre Walter Overton 1979-8-1 12353 Humboldt Near Packsaddle Ridge, close to the town of Hoopa 1341 Comment
  UC492208  Ribes lacustre Joseph P. Tracy 1932-7-16 10623 Humboldt near Corral Prairie; Klamath Mountains, Trinity Summit 1524 Comment
  CAS-BOT-BC173365  Ribes lobbii J. H. Thomas 1949-6-13 912 Humboldt Along trail between Le Perron Flat and Whitey's Peak. Six Rivers National Forest. (East of town of Orleans) 1371 Comment
  HSC20327  Ribes lobbii Francis Winter 1960-5-7 Humboldt NE end of Arbor Camp Ridge 915 Comment
  JEPS48559  Ribes lobbii Hilda W. Grinnell 1932-7-9 7 Humboldt below Camp McKay; So. Fork Mt. 1584 Comment
  UC902100  Ribes lobbii Joseph P. Tracy 1949-6-5 18298 Humboldt ne Hawkins Bar; Trinity Summit Range, Happy Camp Mountain 1280 Comment
  RSA84966  Ribes marshallii Joseph P. Tracy 1932-7-15 10592 Humboldt Ridges east of Corral Prairie; Trinity Summit Comment
  UC1198934  Ribes menziesii Joseph P. Tracy 1918-5-12 4933 Humboldt Eureka Northern Coast Ranges 0 Comment
  UC1198935  Ribes menziesii Joseph P. Tracy 1913-3-9 4021 Humboldt near Hydesville; Northern Coast Region 60 Comment
  HSC70319  Ribes roezlii M. A. Baker 1980-6-7 1870 Humboldt Near Ammon Creek 732 Comment
  CAS-BOT-BC198868  Ribes roezlii var. amictum Volney Rattan 1880-1-1 s.n. Humboldt Unspecified Comment
  UC1198950  Ribes roezlii var. amictum Joseph P. Tracy 1930-7-27 9111 Humboldt near Petrolia; North Coast Ranges, Mattole River 15 Comment
  CAS-BOT-BC198900  Ribes roezlii var. cruentum L. R. Abrams 1918-6-16 7198 Humboldt Willows Creek Comment
  UC1198939  Ribes roezlii var. cruentum Joseph P. Tracy 1935-3-8 13729 Humboldt Willow Creek Trinity River Valley 152 Comment
  UC1198942  Ribes roezlii var. cruentum Joseph P. Tracy 1949-7-19 18397 Humboldt Grouse Mountain 1584 Comment
  UC902104  Ribes roezlii var. cruentum Joseph P. Tracy 1942-4-4 17069 Humboldt e North Fork Mad River (near summit of Trinity Highway); Bald Mountain 640 Comment
  CDA25579  Ribes sanguineum T. C. Fuller 1961-3-21 5855 Humboldt Bank of Mad River, 1 mile south of Korbel. 0 Comment
  HSC90030  Ribes sanguineum Andrew Enberg, Brad Penkala, Dan Scofield 1990-4-27 62 Humboldt Titlow Rd. 0.5 mi. S of its intersection with Hwy. 299 854 Comment
  RSA0019528  Ribes sanguineum Peter H. Raven, Richard Snow 1958-7-20 13644 Humboldt 1.1 miles south of junction of Friday Ridge Road on Titlow Hill Road, near Grouse Ridge. Comment
  HSC103217  Ribes sanguineum var. glutinosum Jade Paget-Seekins 2010-3-14 3 Humboldt McKinleyville, west end of Hiller Park. 10 Comment
  HSC39950  Ribes sanguineum var. glutinosum Linda M. Barker 1976-3-22 1334 Humboldt 3 mi. W of Arcata Comment
  HSC95681  Ribes sanguineum var. glutinosum Steven Lee 2004-3-23 4 Humboldt Manila Dunes along Samoa Blvd., 200ft W of first powerline in parking area along Gun Club Rd. Comment
  HSC48397  Ribes viscosissimum Brad Klipfel 1973-6-10 104 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  UC492213  Ribes viscosissimum Joseph P. Tracy 1932-7-12 10466 Humboldt ridges e of Corral Prairie (Klamath Mountains, Trinity Summit); Klamath Mountains, Trinity Summit 1828 Comment
  UC1199220  Rorippa curvisiliqua Joseph P. Tracy 1933-8-30 13054 Humboldt Grouse Mountain North Coast Ranges, Grouse Mountain 1524 Comment
  UC14402  Rorippa curvisiliqua Chesnut and Drew 1888-7-10 Humboldt Jarnigan's Comment
  CAS-BOT-BC147434  Rosa californica Doris Kildale 1931-6-6 10869 Humboldt Gans Prairie, Orick - Weitchpec Road Comment
  HSC19619  Rosa canina D. E. Anderson 1965-5-15 3700 Humboldt 5 mi. N of Hoopa on Bald Hills Rd. 198 Comment
  HSC19626  Rosa gymnocarpa W. R. Rogers 1965-5-15 61 Humboldt Camp Bauer 1/4 mi. Korbel Comment
  CAS-BOT-BC146837  Rosa nutkana Doris K. Kildale 1927-5-14 3202 Humboldt Big Lagoon Comment
  UC154204  Rosa nutkana var. nutkana J. P. Tracy 1901-6-23 1162 Humboldt immediate vicinity of Eureka 0 Comment
  CAS-BOT-BC148344  Rosa pisocarpa Joseph P. Tracy 1949-8-7 18436 Humboldt Trinity Summit, near Box Camp in open fir timber. 1524 Comment
  UCR121766  Rubus discolor George K. Helmkamp, E. A. Helmkamp 2001-7-8 7002 Humboldt North Coast, north spit of Samoa Peninsula, 0.5 mi north of CA Hwy 255 bridge over Humboldt Bay 6 Comment
  JEPS44733  Rubus laciniatus Joseph P. Tracy 1926-11-7 7828 Humboldt along Eel River from South Fork to Scotia; Northern Coast Ranges, along Eel River 60 Comment
  UC302102  Rubus laciniatus Joseph P. Tracy 1926-11-7 7828 Humboldt opposite Scotia (along Eel River from South Fork to Scotia); Northern Coast Ranges, along Eel River 60 Comment
  UC492171  Rubus laciniatus Joseph P. Tracy 1927-10-8 8385 Humboldt Boyes' Prairie Northern Coast Ranges, Prairie Creek 60 Comment
  CAS-BOT-BC148354  Rubus lasiococcus Joseph P. Tracy 1930-7-17 9021 Humboldt South Fork Mountain, near McKay Camp 1676 Comment
  HSC56140  Rubus parviflorus G. L. Clifton, Griswold 1979-8-1 11961 Humboldt Near Mill Creek Lakes, close to the town of Hoopa 1707 Comment
  HSC60109  Rubus parviflorus M. A. Baker 1977-5-1 279 Humboldt E of Humboldt State University. Comment
  UCR3512  Rubus parviflorus David Whistler, H. M. Whistler 1964-8-1 640801- 5 Humboldt Coast Range, US Hwy 299, 6 mi east of Blue Lake Comment
  SEINET10542893  Rubus procerus Charlene A. Bennett 1976-8-6 Bennett 485 Humboldt By hwy 101, n side of orick. Rocky area, densely forested by river. Flowers Pink 30 Comment
  CAS-BOT-BC156727  Rubus spectabilis David D. Keck; J. Clausen 1935-6-16 3394 Humboldt Mouth of Little River, at roadside Comment
  CHSC94934  Rubus spectabilis K. Lang; J. Lang 2005-3-16 38 Humboldt Trinidad, N. California coast. 51 Comment
  BLMAR234  Rubus ursinus Jennifer Anthony-Wheeler 1996-9-26 234 Humboldt King range, growing at base of N bank of S fork bear creekbed 548 Comment
  UCD17622  Rubus ursinus H. Olmo; T. S. Mallah 1946-6-26 46- 042 Humboldt California. Humboldt County: 6.3 miles east of Ettersburg on road from Briceland. Comment
  UCD17838  Rubus ursinus H. Olmo 8-10 May 1962 62- 35 Humboldt California. Humboldt County: along Route 36 between Grizzly Creek Redwoods State Park and Dinsmore. 670 Comment
  HSC75259  Rudbeckia occidentalis J. O. Sawyer, M. A. Ericksen 1980-8-18 4053 Humboldt Slopes below Mill Creek Lakes, N Trinity Mtn. Research Natural Area 1707 Comment
  HSC38935  Rumex acetosella Linda M. Barker 1976-5-13 1483 Humboldt 3 mi. W of Arcata. Comment
  HSC73450  Rumex acetosella Gail Newton 1980-7-14 1467 Humboldt Near Last Chance Ridge. 1219 Comment
  UCR45427  Rumex acetosella Kenneth Clark 1980-4-18 602 Humboldt North Coast, Shelter Cove, on access trail to Dead Man's Gulch 52 Comment
  HSC37937  Rumex acetosella Peter Sorensen 1976-5-28 Humboldt N Spit of Humboldt Bay, S of Samoa Comment
  HSC59582  Rumex acetosella Rick Lundquist 1979-4-24 34 Humboldt SE corner 7th and Union St., Arcata 24 Comment
  HSC98701  Rumex acetosella subsp. acetosella Cara Witte 2007-5-21 69 Humboldt White Oak Opening. 1257 Comment
  JEPS39867  Rumex obtusifolius Milo S. Baker 1923-8-4 181 Humboldt s of Stone Lagoon Comment
  UCD101361  Rumex occidentalis Joseph P. Tracy 1948-9-12 18208 Humboldt Trinity Summit. Box Camp. 1463 Comment
  CAS-BOT-BC109294  Rumex paucifolius R. K. Gierisch; D. H. Esplin 1969-7-1 3538 Humboldt Six Rivers. Grouse Mountain. 1584 Comment
  UC169305  Rupertia physodes Joseph P. Tracy 1912-7-31 3949 Humboldt open woods near summit of Buck Mountain; Northern Coast Ranges Comment
  UCD138323  Ruppia maritima Malcolm A. Nobs; S. Galen Smith 1949-8-3 1181 Humboldt Near mouth of the Elk River on Highway 101, ca. 4 miles south of Eureka. Comment
  UC1198323  Sagina decumbens subsp. occidentalis Joseph P. Tracy 1911-7-9 3467 Humboldt near mouth Willow Creek (a tributary of Trinity R.); Northern Coast Ranges, Willow Creek (a tributary of Trinity 152 Comment
  UC161047  Sagina decumbens subsp. occidentalis Joseph P. Tracy 1905-5-2 2181 Humboldt at Eureka Northern Coast Region, Eureka 0 Comment
  HSC49825  Salicornia depressa R. York 1979-5-18 299 Humboldt From area around Humboldt Bay. Comment
  UC1191405  Salicornia virginica Malcolm A. Nobs and S. Galen Smith 1949-8-3 1170 Humboldt around Field's Landing Field's Landing Comment
  CAS-BOT-BC132711  Salix A. T. Whittemore 1980-3-15 80 -005 Humboldt Arcata, in residential area, along Alliance Road from Foster Ave. to the railroad tracks Comment
  UC1173608  Salix eastwoodiae Joseph P. Tracy 1935-7-26 14267 Humboldt meadows at Water Dog Lakes; Trinity Summit 1828 Comment
  UC1173613  Salix eastwoodiae Joseph P. Tracy 1935-7-26 14264 Humboldt meadows at Water Dog Lakes; Trinity Summit 1828 Comment
  UC526711  Salix exigua var. hindsiana H. E. Parks and Joseph P. Tracy 1934-7-25 11090 Humboldt at Willow Creek Trinity R. Valley; Northern Coast Ranges, Trinity R. Valley 152 Comment
  CAS-BOT-BC104115  Salix hindsiana Joseph P. Tracy 1933-5-19 12203 Humboldt Eel River, Alton to Fortuna 15 Comment
  CAS-BOT-BC107715  Salix hookeriana Doris K. Kildale 1926-6-29 2238 Humboldt Mouth of Mad River Comment
  CAS-BOT-BC107742  Salix hookeriana Joseph P. Tracy 1936-10-24 15202 Humboldt Fortuna 15 Comment
  CHSC9652  Salix hookeriana E. L. Smith 1971-8-18 1023 Humboldt At Manila ca. 4 mi sw of Arcata, on w side of Humboldt Bay opposite of Eureka. Comment
  HSC90428  Salix hookeriana Jean Hanson 1980-3-8 12 Humboldt Indian (Gunther) Island, Humboldt Bay, Eureka, W end of island Comment
  HSC90764  Salix hookeriana Gail Newton 1983-6-5 3641 Humboldt Elk River Wildlife Area, Eureka Comment
  JEPS12928  Salix hookeriana Joseph P. Tracy 1931-4-4 9330 Humboldt near Samoa; Northern Coast Region, Humboldt Bay 6 Comment
  JEPS14759  Salix hookeriana Joseph P. Tracy 1926-3-14 7388 Humboldt Carlotta; Northern Coast Ranges 60 Comment
  POM219535  Salix hookeriana H. E. Parks 1931-5-12 954 Humboldt Samoa. Humboldt Bay. Near sea level. 0 Comment
  UC1196634  Salix hookeriana Joseph P. Tracy 1934-3-10 13161 Humboldt Big Lagoon Northern Coast Region 6 Comment
  UC1196675  Salix hookeriana Joseph P. Tracy 1931-3-26 9305 Humboldt near Alton; Northern Coast Ranges, Van Duzen River 30 Comment
  UC1196679  Salix hookeriana Joseph P. Tracy 1925-2-1 6929 Humboldt slope of bluff near Salmon Creek Corners; Northern Coast Region, around Humboldt Bay, Table Bluff 60 Comment
  UC303035  Salix hookeriana Joseph P. Tracy 1926-11-21 7832 Humboldt near mouth of Little R.; Northern Coast Ranges 6 Comment
  UC469112  Salix hookeriana Joseph P. Tracy 1931-8-23 9620 Humboldt sand dunes near Samoa; Northern Coast Region, on Humboldt Bay 6 Comment
  UC481378  Salix hookeriana Harold E. Parks and J. P. Tracy 1931-3-26 904 Humboldt on Van Duzen River Alton; Van Duzen River 15 Comment
  UC492336  Salix hookeriana Harold E. and Susan T. Parks 1932-4-10 1102 Humboldt Little River Lagoon Trinidad Comment
  UC512092  Salix hookeriana Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-11 1216 Humboldt 1 mi n Samoa (in pine barrens near the coast) Comment
  UC518898  Salix hookeriana Jim Davis Apr 25 1933-Apr 27 1933 4 Humboldt around Eureka Comment
  UC1173620  Salix hookeriana Joseph P. Tracy 1936-2-23 14772 Humboldt Fortuna Eel River 15 Comment
  SBBG59090  Salix laevigata Mrs. H. P. Bracelin 1931-5-1 272 Humboldt Sylvandale, between Miranda and Meyers, S fork of Eel River Comment
  UC469475  Salix laevigata Joseph P. Tracy 1931-10-18 9737 Humboldt on Eel R. Camp Grant; Northern Coast Ranges, Eel R., Camp Grant 60 Comment
  LA208815  Salix lasiandra Harold E. Parks; 1931-3-24 911 Humboldt Fortuna, on banks of Eel River 10.0 Comment
  CAS-BOT-BC125227  Salix lasiandra var. lasiandra Harold E. Parks 1931-3-24 0911 Humboldt Fortuna, on banks of Eel River 10 Comment
  CAS-BOT-BC128195  Salix lasiandra var. lasiandra Marcus E. Jones 1924-4-25 s.n. Humboldt Dyerville Comment
  CAS-BOT-BC107101  Salix lasiolepis Joseph P. Tracy 1934-3-11 13146 Humboldt Weitchpec, frequent along Klamath River 91 Comment
  CAS-BOT-BC107588  Salix lasiolepis Joseph P. Tracy; Carleton R. Ball; Harold E. Parks 1932-5-17 1318 Humboldt On banks of Redwood Creek, at Berry's, on Trinity Highway 274 Comment
  CAS-BOT-BC107589  Salix lasiolepis Joseph P. Tracy; Carleton R. Ball; Harold E. Parks 1932-5-17 1318 Humboldt On banks of Redwood Creek, at Berry's, on Trinity Highway 274 Comment
  CAS-BOT-BC107649  Salix lasiolepis Joseph P. Tracy 1933-5-14 12184 Humboldt Berry's Mt. on Trinity Highway 762 Comment
  JEPS14768  Salix lasiolepis Joseph P. Tracy 1932-10-8 10865 Humboldt on Trinity Hwy. Berry's Mt.; Northern Coast Ranges 762 Comment
  RSA34303  Salix lasiolepis Doris K. Kildale 1928-3-27 4359 Humboldt [Unspecified] Comment
  SBBG57891  Salix lasiolepis H. E. Parks 1931-5-14 963 Humboldt Van Duzen River between Alton and Carlotta 15 Comment
  UC470408  Salix lasiolepis Joseph P. Tracy 1931-9-19 9675 Humboldt Alton Northern Coast Region 30 Comment
  UC490463  Salix lasiolepis Joseph P. Tracy 1932-9-5 10765 Humboldt near Petrolia; North Coast Region, Mattole River 15 Comment
  UC490467  Salix lasiolepis Joseph P. Tracy 1932-9-5 10768 Humboldt near Petrolia; North Coast Region, Mattole River 15 Comment
  UC490551  Salix lasiolepis Joseph P. Tracy 1932-3-6 9776 Humboldt at Willow Creek Trinity R. Valley; Northern Coast Ranges, Trinity R. Valley 152 Comment
  UC506385  Salix lasiolepis Joseph P. Tracy 1932-6-4 10130 Humboldt Bridgeville Northern Coast Ranges 228 Comment
  UC506398  Salix lasiolepis Joseph P. Tracy 1933-4-9 10968 Humboldt Bridgeville Northern Coast Ranges, Van Duzen River (along river) 228 Comment
  UC506400  Salix lasiolepis Joseph P. Tracy 1932-8-21 10358 Humboldt Three Cabins Northern Coast Ranges, Chaparral Mountain (lower western foothills of mt.) 457 Comment
  UC506404  Salix lasiolepis Joseph P. Tracy 1932-10-8 10866 Humboldt Berry's Mt. Northern Coast Ranges (on Trinity Hwy) 762 Comment
  UC519344  Salix lasiolepis Joseph P. Tracy 1933-10-15 13090 Humboldt along river near Miranda; Coast Ranges, South Fork of Eel River 91 Comment
  CAS-BOT-BC107414  Salix lasiolepis var. lasiolepis Henry M. Pollard 1945-9-4 s.n. Humboldt near Camp Creek, Klamath River Canyon Comment
  RSA298153  Salix lucida subsp. lasiandra Thomas W. Nelson 1978-4-23 3888 Humboldt At jct of Copher and Samoa Rds. N of Samoa. Comment
  CAS-BOT-BC125606  Salix melanopsis Harold E. Parks; Joseph P. Tracy 1931-5-17 0974 Humboldt Mouth of Willow Creek at Trinity River 150 Comment
  POM218958  Salix melanopsis H. P. Bracelin 1931-5-2 284 Humboldt E of Redwood Hwy, 6km S of Alton. 20 Comment
  SBBG22044  Salix melanopsis R. F. Thorne 1957-9-2 Humboldt branch of Eel River at Burlington State Park, just S of Weott Comment
  SBBG57953  Salix melanopsis H. E. Parks, J. P. Tracy 1931-5-17 967 Humboldt mouth of Willow Crk at Trinity River 150 Comment
  UC1196635  Salix melanopsis Joseph P. Tracy 1932-7-31 10287 Humboldt Eel R. at mouth of Larrabee Creek; Northern Coast Ranges, Eel R. 60 Comment
  UC1196639  Salix melanopsis Joseph P. Tracy 1932-8-27 10756 Humboldt along Van Duzen R. Alton; North Coast Ranges, Van Duzen R. 30 Comment
  UC1196650  Salix melanopsis Joseph P. Tracy 1932-10-12 10878 Humboldt along S Fork Eel R. Miranda; Northern Coast Ranges, S Fork Eel R. 121 Comment
  UC469449  Salix melanopsis Joseph P. Tracy 1931-5-3 9348 Humboldt Mad R. near Blue Lake; Northern Coast Region, Mad R. 15 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
  UC469460  Salix melanopsis Joseph P. Tracy 1931-10-18 9740 Humboldt on Eel R. Camp Grant; Northern Coast Ranges, Eel R., Camp Grant 60 Comment
  UC481284  Salix melanopsis Harold E. Parks 1931-5-14 960 Humboldt Van Duzen R. between Alton and Carlotta; Van Duzen R. 15 Comment
  UC481309  Salix melanopsis Harold E. Parks and Joseph P. Tracy 1931-5-17 973 Humboldt mouth of Willow Creek at Trinity R.; Willow Creek 150 Comment
  UC481826  Salix melanopsis Mrs. H. P. Bracelin 1931-5-2 283 Humboldt 6 km. s. Alton (e. of Redwood Hwy.) 20 Comment
  CAS-BOT-BC129248  Salix piperi Joseph P. Tracy 1937-8-12 15658 Humboldt Snow Camp, most gourn in and around meadow. 1402 Comment
  CAS-BOT-BC129167  Salix scouleriana Harold E. Parks; Carleton R. Ball; Joseph P. Tracy 1932-5-11 1228 Humboldt Near the coast, 1 mile north of Samoa, approximately at sea level. Comment
  HSC102104  Salix scouleriana M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 1007 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  HSC102196  Salix scouleriana M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-4 1110 Humboldt Along trail (abandoned Road 6E74) from Andy's Camp to Patterson Meadows 1563 Comment
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Jul 9 2015
  JEPS13087  Salix scouleriana Joseph P. Tracy 1937-2-21 15230 Humboldt Van Duzen R. near Grizzly Creek; Van Duzen R. 91 Comment
  POM219539  Salix scouleriana H. E. Parks 1931-5-12 951 Humboldt Bishop Pine Lodge. 150 Comment
  RSA47090  Salix scouleriana Doris K. Kildale 1926-9-9 2687 Humboldt Low gap of Mod River. Comment
  SBBG57977  Salix scouleriana H. E. Parks 1931-5-12 955 a Humboldt Samoa, Humboldt Bay Comment
  UC1196697  Salix scouleriana Joseph P. Tracy 1923-1-7 6135 Humboldt near Ferndale Ferndale; Northern Coast Ranges 15 Comment
  UC1196700  Salix scouleriana Joseph P. Tracy 1912-2-25 3558 Humboldt at Eureka Northern Coast Region, Eureka 0 Comment
  HSC90438  Salix sitchensis Jean Hanson 1980-3-8 13 Humboldt Indian (Gunther) Island, Humboldt Bay, Eureka, W end of island Comment
  HSC90749  Salix sitchensis Jean Hanson 1980-3-8 22 Humboldt Indian (Gunther) Island, Humboldt Bay, Eureka, W end of island Comment
  HSC96608  Salix sitchensis Gordon Leppig 2005-4-8 2212 Humboldt Eureka, edge of PALCO Marsh at W end of W Hawthorne St. 3 Comment
  UC176185  Salix sitchensis Joseph P. Tracy 1913-3-9 4013 Humboldt Van Duzen R. near Hydesville; Northern Coast Region, Van Duzen R. 60 Comment
  UC526720  Salix tracyi Joseph P. Tracy 1934-9-30 13678 Humboldt Bridgeville, along Van Duzen River 198 Comment
  JEPS12179  Salpichroa origanifolia Joseph P. Tracy 1933-8-22 12972 Humboldt Eureka 0 Comment
  UC585975  Salpichroa origanifolia Joseph P. Tracy 1933-8-22 12972 Humboldt Eureka; Northern Coast Ranges 0 Comment
  RSA53827  Salsola tragus H. M. Pollard s.n. Humboldt Near Orleans. Comment
  JEPS12746  Sambucus mexicana W. L. Jepson 1932-7-24 16390 Humboldt Mail Ridge 914 Comment
  UC168949  Sambucus mexicana Joseph P. Tracy 1911-7-9 3465 Humboldt near mouth of Willow Creek; Northern Coast Ranges, Valley of Trinity River 152 Comment
  HSC34273  Sambucus nigra subsp. caerulea K. Irwin 1975-8-13 Humboldt N Trinity Mtn. Comment
  HSC58141  Sambucus nigra subsp. caerulea Gilbert Muth 1979-8-1 12164 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1677 Comment
  CDA42178  Sambucus racemosa Bell 1945-7-14 s.n. Humboldt Highway #54. 0 Comment
  CAS-BOT-BC235127  Sambucus racemosa var. racemosa John Thomas Howell 1931-6-17 6725 Humboldt 2 1/2 miles n. of Orick Comment
  HSC79479  Sambucus racemosa var. racemosa Kenneth Clark 1980-3-27 562 Humboldt N fork of Dead Man's Gulch. 73 Comment
  UC28612  Sambucus racemosa var. racemosa J. Burtt Davy 1899-6-12 5480 Humboldt Camp Grant North Coast Ranges, Eel River Comment
  UC154052  Sanicula arctopoides J. P. Tracy 1900-6-5 852 Humboldt immediate vicinity of Eureka (at Bucksport); Bucksport 0 Comment
  UC154106  Sanicula arctopoides J. P. Tracy 1904-4-24 2021 Humboldt opposite Eureka (Ocean Beach at Samoa); Samoa, Ocean Beach Comment
  UC1197113  Sanicula arctopoides Joseph P. Tracy 1904-4-24 4028 Humboldt Ocean Beach at Humboldt Bay Ocean Beach; Northern Coast Region, Humboldt Bay, Ocean Beach Comment
  HSC69866  Sanicula crassicaulis Thomas W. Nelson 1978-5-28 4092 Humboldt McKeown Ranch, N of Dinsmore 762 Comment
  HSC39422  Sanicula graveolens Thomas W. Nelson, Jane P. Nelson 1976-6-15 2731 Humboldt Growing on FS road N of Alder Springs 1524 Comment
  HSC48752  Sanicula graveolens Brad Klipfel 1973-6-16 78 Humboldt Along ridge trail SE of N Trinity Mountain 1829 Comment
  JEPS1002  Sanicula graveolens Joseph P. Tracy 1926-5-30 7520 Humboldt near Ruby Creek (Northern Coast Ranges, Willow Creek Canyon); Northern Coast Ranges, Willow Creek Canyon 609 Comment
  POM160882  Sanicula graveolens Joseph P. Tracy 1926-5-30 7520 Humboldt Willow creek canyon, local in serpentine formation near Ruby Cr. 610 Comment
  HSC68996  Sanicula tracyi Jacqueline Greenleaf 1980-8-12 314 Humboldt Near Henry Ridge. 1128 Comment
  UC154132 Image available Sanicula tracyi Joseph P. Tracy 1908-6-30 2740 Humboldt nw slope Buck Mountain; Northern Coast Ranges; NW slope of Buck Mt., Humboldt Co. 762 Comment
  HSC55296  Sanicula tuberosa Terry Griswold, Butler 1979-7-10 6344 Humboldt Near Board Camp Mtn., close to the town of Willow Creek 1372 Comment
  HSC21645  Sanicula tuberosa F. Morrell 1949-5-15 Humboldt Berry Summit Comment
  HSC98590  Sanicula tuberosa Cara Witte 2008-6-9 692 Humboldt Board Camp Butte. Forest Serivce Road 4E27. 1503 Comment
  SEINET13945259 Image available Sanicula tuberosa Thomas Nelson 1978-1 4095 Humboldt T2N, R5E, Sec 33, elev 2500 ft. Oak woodland on McKeown Ranch north of Dinsmore 762 Comment
  UC668103  Saponaria officinalis Joseph P. Tracy 1929-7-21 8644 Humboldt Trinity River Valley at Willow Creek; Trinity River Valley at Willow Creek 152 Comment
  RSA43855  Saponaria officinalis H. M. Pollard 1948-7-26 s.n. Humboldt Banks of Klamath River near Orleans. Comment
  POM284650  Satureja douglasii Lyman Benson 1929-7-16 s.n. Humboldt Weott Ranger Station. Comment
  UC1198880  Saxifraga californica Joseph P. Tracy 1927-4-10 7889 Humboldt Redwood Creek at Berry's Redwood Creek; Northern Coast Ranges, Redwood Creek 274 Comment
  HSC102082  Saxifraga ferruginea M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 984 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  UC1988888  Saxifraga mertensiana Joseph P. Tracy 1927-3-27 7854 Humboldt near South Fork (Trinity River Valley along river); Northern Coast Ranges, Trinity River Valley 182 Comment
  UC1197073  Scandix pecten-veneris Joseph P. Tracy 1923-3-17 6162 Humboldt Northern Coast Ranges, Garberville Garberville; Northern Coast Ranges, Garberville 121 Comment
  CHSC68459  Schoenoplectus acutus var. occidentalis L. P. Janeway 1987-7-30 2535 Humboldt Dry Lagoon. Middle of the lagoon. 3 Comment
  HSC7442  Schoenoplectus americanus R. L. Jarvis 1962-4-29 37 Humboldt Stone Lagoon, 3 mi. S of Orick 0 Comment
  POM87952  Schoenoplectus pungens Le Roy Abrams, Rimo C. Bacigalupi 8268 Humboldt Big Lagoon, south of Orick. Comment
  UCD60367  Schoenoplectus pungens var. badius Gordon Leppig 1998-6-25 855 Humboldt McKinleyville, Mad River Estuary at end of Murray Rd. 0 Comment
  HSC45967  Schoenoplectus tabernaemontani J. P. Smith 1973-5-26 6804 Humboldt Scotia Bluffs along the Eel River near Rio Dell Comment
  JEPS79980  Scirpus cernuus Joseph P. Tracy 1938-6-16 15942 Humboldt Trinidad 3 Comment
  UC1100781  Scirpus cernuus Malcolm A. Nobs, S. Galen Smith 1949-8-3 1174 Humboldt salt marshes around Fields Landing; around Fields Landing Comment
  UCR122382  Scirpus microcarpus George K. Helmkamp, E. A. Helmkamp 2001-7-8 7001 Humboldt North Coast, north spit of Samoa Peninsula, 0.5 mi north of CA Hwy 255 bridge over Humboldt Bay 6 Comment
  UC175805  Scoliopus bigelovii Joseph P. Tracy 1913-3-9 4017 Humboldt near Hydesville; Northern Coast Region 60 Comment
  CAS-BOT-BC517415  Scoliopus bigelovii Doris K. Kildale 1926-2-28 1520 Humboldt Kneeland Prairie Road at the watering trough 609 Comment
  BLMAR679  Scrophularia californica Jennifer Wheeler 2013-7-17 679 Humboldt King range, Mattole Beach parking lot 6 Comment
  UC582594  Scrophularia californica Joseph P. Tracy 1937-7-30 15565 Humboldt 6 mi se Arcata (Fickle Hill) 609 Comment
  HSC100682  Scrophularia californica Carl C. Marshall Apr 1886 175 Humboldt Everywhere. Comment
  HSC37231  Scrophularia californica Lon Hall 1975-6-20 403 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
  BLMAR737  Scutellaria antirrhinoides Jennifer Wheeler 2015-5-12 737 Humboldt King range, Along Telegraph Ridge btwn Oat and Spanish 670 Comment
  HSC103086  Sedum laxum subsp. flavidum Sydney Carothers 2014-6-22 8 Humboldt Six Rivers National Forest, Lassics Botanical Area; on saddle between Peak 1 and Mt. Lassic 1796 Comment
  HSC76350  Sedum laxum subsp. heckneri Denis Kearns 1981-7-21 299 Humboldt Near Whiteys Peak 1585 Comment
  HSC79343  Sedum laxum subsp. heckneri D. K. Imper 1983-7-28 Humboldt Six Rivers National Forest, Orleans, off FS 12N20 near Bald Mtn. Comment
  HSC56423  Sedum obtusatum subsp. retusum Griswold, Butler 1979-7-10 7112 Humboldt Near Board Camp Mtn., close to the town of Willow Creek. 1350 Comment
  HSC57458  Sedum obtusatum subsp. retusum G. L. Clifton, Griswold 1979-7-26 10290 Humboldt Near Salmon Mtn., close to the town of Forks of Salmon 1935 Comment
  JEPS25697  Sedum radiatum P. C. Hutchison 1961-5-22 2027 Humboldt on hiway US 299 ca 4 mi n Orleans (e side Klamath River); , n of Orleans Comment
  SEINET4076756  Sedum radiatum O. M. Clark 1932-1 1295 Humboldt South Eureka. Comment
  CAS-BOT-BC63824  Sedum spathulifolium L. E. Smith 1913-4-2 s.n. Humboldt Between Pitt and Hermit. Comment
  SEINET12218775  Sedum spathulifolium J. P. Tracy 1950-1 18715 Humboldt Wildcat Road, 2 mi S of Ferndale 305 Comment
  UC1225751  Sedum spathulifolium Joseph P. Tracy 1948-5-15 17981 1/2 Humboldt along Trinity Highway Willow Creek Canyon (on rocks at the East Fork Willow); East Fork Willow Creek, Willow Creek Canyon 457 Comment
  HSC63138  Sedum spathulifolium var. spathulifolium M. A. Baker 1979-6-28 947 Humboldt NE side near summit of Packsaddle Ridge just N of the most E tip of the N fork of Mill Creek Comment
  HSC63239  Sedum spathulifolium var. spathulifolium M. A. Baker 1979-6-7 801 Humboldt Hwy. 299, 3 km N of Berry Summit Comment
  POM182453  Selaginella wallacei Joseph P. Tracy 1912-7-26 3850 Humboldt Kneeland Prairie. 762 Comment
  UC1225807  Selaginella wallacei Joseph P. Tracy 1948-5-31 17998 Humboldt Harris 609 Comment
  HSC98904  Selaginella wallacei Cara Witte 2008-6-7 686 Humboldt Horse Mountain Botanical Area. 1/4 mile west of intersection between National Forest 1 and Forest Service Roads 6N36, 6N38. 1426 Comment
  HSC26744  Senecio elegans D. A. Haskell 1966-4-30 54 Humboldt Near the town of Samoa Comment
  SBBG62728  Senecio hydrophilus R. Hartwell 1938-8-6 113 Humboldt near Eureka Comment
  HSC6116  Senecio integerrimus D. E. Anderson 1962-5-1 2195 Humboldt 2 mi. W of Hoopa Comment
  UC302177  Senecio integerrimus var. major Joseph P. Tracy 1926-5-15 7480 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  CDA8652  Senecio integerrimus var. major T. R. Haig 1960-6-18 Humboldt Kneeland Quarry, 0.5 mile northeast of Kneeland School. 0 Comment
  UC1199492  Senecio minimus Joseph P. Tracy 1934-8-31 Humboldt Kneeland Prairie 762 Comment
  CAS-BOT-BC364224  Senecio sylvaticus Alice Eastwood May 15 s.n. Humboldt Samoa Comment
  CAS-BOT-BC364330  Senecio triangularis Joseph P. Tracy 1932-7-13 10523 Humboldt Trinity Summit. Corral Prairie 1584 Comment
  HSC102598  Senecio triangularis M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-28 1585 Humboldt Slopes above Bret Hole and below trail 6E18, 1.5 km SSW of Trinity Summit. 1778 Comment
  HSC57671  Senecio triangularis G. L. Clifton, Griswold 1979-7-25 10860 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1784 Comment
  HSC58000  Senecio triangularis G. L. Clifton, Griswold 1979-7-31 11780 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1805 Comment
  HSC58076  Senecio triangularis G. L. Clifton, Griswold 1979-8-1 11977 Humboldt Near Mill Creek Lakes, close to the town of Hoopa 1707 Comment
  HSC58343  Senecio triangularis Overton, Butler 1979-8-2 12670 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  HSC63881  Senecio triangularis M. A. Baker 1979-6-27 923 Humboldt Edge of Hoopa Indian Reservation Comment
  RSA47114  Senecio triangularis Doris K. Kildale 1925-8-16 1172 Humboldt Trinity Summit. Elk Horn Prarie. 1524 Comment
  RSA168840  Senecio vulgaris Joseph P. Tracy 1943-11-28 17454 Humboldt Eel River bar at mouth of Van Duzen near Alton Comment
  HSC13034  Sequoia sempervirens T. C. DeCew 1970-11-14 44 Humboldt HSU Campus Comment
  HSC98210  Sequoia sempervirens Gordon Leppig 1999-7-9 1189 Humboldt Big Lagoon County Park; Big Lagoon Bog 3 Comment
  JEPS48272  Sequoia sempervirens Joseph P. Tracy 1940-10-17 16770 Humboldt Dyerville 48 Comment
  NY64455  Sequoia sempervirens H. H. Smith 1911-6-16 3824 Humboldt Vanceslan No. 20 Comment
  POM182755  Sequoia sempervirens A. L. Bolton 1904-11-12 s.n. Humboldt Willits Comment
  SEINET5716899 Image available Sequoia sempervirens Ronald J. Mastrogiuseppe 1965-1 s.n. Humboldt Humboldt Redwoods State Park; near the Founders Tree.; Humboldt Redwoods State Park Comment
  UC602550  Sherardia arvensis Joseph P. Tracy 1933-6-13 12560 Humboldt Bair's; Redwood Creek 609 Comment
  CAS-BOT-BC205577  Sidalcea malachroides F. H. Utech 1986-5-23 86 -399 Humboldt Ca. 3.0 mi NW of Petrolla on Mattole Road (Humboldt Co. hwy F3C) enroute to Capetown 80 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
  UC1197965  Sidalcea malachroides Joseph P. Tracy 1933-7-21 12819 Humboldt between Van Duzen Yager Creek (Redwood House); between Van Duzen and Yager Creek, Redwood House 762 Comment
  UC1222507  Sidalcea malachroides Joseph P. Tracy 1950-7-12 19034 Humboldt on the Butter Valley Road 2 mi e Cameron Hill Junction (near Kneeland); e of Cameron Hill Jct, near Kneeland Comment
  UC203995  Sidalcea malachroides Joseph P. Tracy 1918-7-1 4964 Humboldt along Eel River from South Fork to Scotia (Holmes Flat); Northern Coast Ranges, Eel River from South Fork to Scotia 60 Comment
  UC906705  Sidalcea malviflora subsp. asprella Harold E. Parks and Joseph P. Tracy 1942-7-1 11577 Humboldt Dinmore's 762 Comment
  BLMAR280  Sidalcea malviflora subsp. patula Jennifer Anthony-Wheeler 1999-5-28 280 Humboldt King range, growing along windy pt rd about 1/2 way to the spring exclosure 140 Comment
  RSA46857  Sidalcea malviflora subsp. patula Doris K. Kildale 1927-7-1 3624 Humboldt Alton Hill Comment
  RSA46866  Sidalcea malviflora subsp. patula Doris K. Kildale 1927-7-10 s.n. Humboldt Gans Prairie, Bald Mountain 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
  CDA36500  Sidalcea oregana subsp. hydrophila T. C. Fuller 1958-6-17 598 -58 Humboldt Wildcat Ridge near Bunker Hill. 0 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
  HSC41202  Silene bernardina Thomas W. Nelson, Jane P. Nelson 1977-7-4 3602 Humboldt Along old trail above Alder Springs 1555 Comment
  UC162882  Silene bridgesii Harley P. Chandler June, 1901 1505 Humboldt Klamath River North Coast Ranges, Klamath River 426 Comment
  HSC74456  Silene campanulata Gail Newton 1980-8-10 2011 Humboldt Near Blake Mtn. 1798 Comment
  HSC70980  Silene campanulata subsp. glandulosa Gail Newton 1980-7-22 1665 Humboldt Near Devils Backbone 231 Comment
  HSC76246  Silene campanulata subsp. glandulosa Denis Kearns 1981-6-24 1 Humboldt Near Cedar Camp 1219 Comment
  RSA53804  Silene campanulata subsp. glandulosa H. M. Pollard 1946-9-2 s.n. Humboldt Orleans Mts. 1524 Comment
  CAS-BOT-BC384425  Silene coronaria Volney Rattan 1878-1-1 s.n. Humboldt Hoopa Valley Comment
  UC668091  Silene gallica Joseph P. Tracy 1931-5-3 9351 Humboldt near Blue Lake; along Mad River, near Blue Lake 15 Comment
  CAS-BOT-BC387076  Silene gallica Doris K. Kildale; L. B. Kildale 1930-5-27 9527 Humboldt Gunther's Island in Humboldt Bay Comment
  HSC95548  Silene gallica Andrea Pickart 2002-5-20 103 Humboldt Manila Dunes, near Manila Community Services District treatment area 15 Comment
  UC14434  Silene hookeri Chesnut and Drew 1888-7-19 Humboldt Pilot Ridge Comment
  CAS-BOT-BC181242  Silene hookeri subsp. bolanderi Lincoln Constance; Alan A. Beetle 1940-5-17 2612 Humboldt McClellan Mountain, near Eureka 822 Comment
  CAS-BOT-BC389056  Silene laciniata subsp. californica Carl B. Wolf 1927-8-28 1175 Humboldt On the grade 9 mi. from Willow Creek, Lord Ellis Road to Blue Lake Comment
  CAS-BOT-BC389071  Silene laciniata subsp. californica L. R. Abrams 1918-6-16 7187 Humboldt Willow Creek Comment
  CAS-BOT-BC389880  Silene scouleri subsp. scouleri Joseph P. Tracy 1904-9-1 2141 Humboldt Northern Coast Region. At Eureka. On bluff back of Bucksport 60 Comment
  CDA39474  Sisyrinchium bellum T. C. Fuller 1958-6-17 1715 Humboldt Wildcat Ridge near Bunker Hill. 0 Comment
  RSA18062  Sisyrinchium californicum Carl B. Wolf 1927-8-22 789 Humboldt Big Lagoon Comment
  SD42554  Sisyrinchium californicum Carl B. Wolf 1937-8-10 2899 Humboldt Big Lagoon, bog at State Park. 6 Comment
  RSA245276  Sisyrinchium californicum Brad W. Klipfel 1973-8-17 271 Humboldt Big Lagoon Park, north of Trinidad Comment
  UC667000 Image available Sisyrinchium hitchcockii Joseph P. Tracy 1938-6-17 15947 Humboldt 3 mi e of Cape Mendocino; Cape Ridge 304 Comment
  UC666970  Smilacina stellata Joseph P. Tracy 1939-4-25 16222 Humboldt Bull Creek; mouth 60 Comment
  HSC21309  Solanum americanum D. E. Anderson 1961-9-13 1824 Humboldt Comment
  HSC47104  Solanum aviculare J. O. Sawyer 1978-11-5 3324 Humboldt Old Stagecoach rd. 1/5 mi. N of entrance to Trinidad Beach State Park Comment
  UC577350  Solanum umbelliferum Joseph P. Tracy 1937-7-24 15528 Humboldt 2 mi se of Devil's Hole (Trinity Summit); Trinity Summit 1584 Comment
  CAS-BOT-BC157484  Solanum umbelliferum H. M. Pollard 1946-9-2 s.n. Humboldt Orleans Mt. Trail 1524 Comment
  HSC44112  Solanum xanti Barbara Kelly 1977-4-23 303 Humboldt 2.5 mi. S of Shelter Cove Rd., S Fork of Bear Creek at Wailaki Campground 561 Comment
  POM247118  Solidago californica Joseph P. Tracy 1937-9-5 15682 Humboldt Trinity River Valley, at Willow Creek. 152 Comment
  HSC91905  Solidago elongata E. Mackey 1986-7-21 Humboldt Patricks Point State Park; Palmer's Point Comment
  HSC90397  Solidago spathulata Jean Hanson 1980-4-12 47 Humboldt Indian (Gunther) Island. W end of island between the point of meeting of the two dikes and the shore. Comment
  SEINET5782991 Image available Solidago spathulata S. K. Harris 1939-9-5 Humboldt Samoa Comment
  BLMAR550  Solidago spathulata Jennifer Wheeler 2004-7-15 550 Humboldt Stornetta Ranch Comment
  CAS-BOT-BC374427  Sonchus asper Joseph P. Tracy 1932-6-4 10132 Humboldt Bridgeville 198 Comment
  UCD136156  Sonchus oleraceus Linda M. Barker 1976-6-1 1546 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  HSC93471  Spartina densiflora Gordon Leppig 1998-8-6 992 Humboldt Arcata Marsh and Wildlife Sanctuary. 2 Comment
  HSC103560  Spartium junceum Spadoni 2002-6-26 70828 Humboldt Along roadside in the vicinity of Garberville. Comment
  CAS-BOT-BC389920  Spergula arvensis Doris K. Kildale 1925-12-6 1820 Humboldt Orick, near mouth of Redwood Creek Comment
  HSC4240  Spergula arvensis W. F. Nickel 1965-3-12 Humboldt 2 mi. N of Arcata near Arcata Drive-In Theater Comment
  HSC83996  Spergula arvensis L. P. Janeway, C. K. Geldin-Meyers 1983-4-15 221 Humboldt Field around the new Science and Engineering Bldg., HSU campus 30 Comment
  HSC26364  Spergularia macrotheca T. O. Osborne 1970-4-5 85 Humboldt Flat-iron rock, 3/4 mi. NW of Trinidad Lighthouse. Comment
  HSC26360  Spergularia macrotheca T. O. Osborne 1970-6-18 46 Humboldt Green Rock, 1-5/8 mi. N, 3/4 mi. W of Trinidad Lighthouse. Comment
  CAS-BOT-BC149616  Spiraea douglasii H. E. McMinn 1922-7-1 289 Humboldt North of Scotia Comment
  UC1225876  Spiranthes porrifolia Joseph P. Tracy 1942-6-15 17154 Humboldt Garberville 152 Comment
  UC162688  Stachys ajugoides var. rigida Joseph P. Tracy 1911-7-11 3515 Humboldt hills along Supply Creek Northern Coast Ranges, Hoopa Valley 182 Comment
  UC552241  Stachys arvensis H. B. Tucker 1935-4-5 Humboldt Arcata Bottom; Arcata 9 Comment
  BLMAR186  Stachys bergii Donald Hazlett 1994-6-7 186 Humboldt King range, near horse Mt. Ridge rd 670 Comment
  HSC89498  Stachys chamissonis P. A. Daly 1984-5-6 2 Humboldt Trinidad Head 61 Comment
  HSC46038  Stachys mexicana Catherine Chin 1978-5-5 55 Humboldt 17.4 mi. S of Ferndale on Mattole Rd. 91 Comment
  HSC14416  Stachys mexicana D. E. Anderson 1961-8-11 1727 Humboldt E of Humboldt State College campus. 30 Comment
  HSC61048  Stachys rigida Jimerson, J. Pageau 1979-8-10 747 Humboldt Near Tish Tang A Tang Ridge, close to the town of Hoopa 1464 Comment
  UCD126028  Stachys rigida James P. Smith; Advanced Plant Taxonomy Class 1973 1973-5-26 6863 Humboldt Scotia Bluffs along the Eel River near Rio Dell. Comment
  POM160267  Stellaria crispa Joseph P. Tracy 1926-6-12 7586 Humboldt Prairie Creek Comment
  HSC73047  Stipa occidentalis var. californica M. A. Baker 1980-7-15 2943 Humboldt Near Whiting Ridge. 1341 Comment
  HSC44061  Streptanthus breweri Thomas W. Nelson 1977-7-4 3587 Humboldt W side of road N of Alder Springs, head of N Fork of Conley Creek 1494 Comment
  HSC44068  Streptanthus breweri Thomas W. Nelson, Jane P. Nelson 1977-7-1 3543 Humboldt Ridge N side of Bear Creek, 100 m W of FS Rd. 1S07 Comment
  RSA430015  Streptanthus breweri Thomas W. Nelson, Jane P. Nelson 1977-7-4 3587 Humboldt Along W side of road north of Alder Spring, head of N Fork of Conley Creek. 1494 Comment
  CAS-BOT-BC87611  Streptanthus tortuosus Henry M. Pollard 1946-9-2 s.n. Humboldt Orleans Mount Trail. 1524 Comment
  HSC57118  Streptanthus tortuosus Walter Overton, Marvin Butler 1979-7-25 9863 Humboldt Near Sims Mtn., close to the town of Willow Creek 1295 Comment
  UC668050  Streptanthus tortuosus Joseph P. Tracy 1937-7-2 15399 Humboldt on ridge 2 mi e Grove's Prairie (rocky bank in open); Trinity Summit 1524 Comment
  HSC58105  Streptanthus tortuosus var. tortuosus G. L. Clifton, Terry Griswold 1979-8-1 12040 Humboldt Near N Trinity Mtn., close to the town of Hoopa 1799 Comment
  UCR275109  Streptopus amplexifolius Charity A. Hartshorn 2016-5-14 33 Humboldt Arcata Community Forest 244 Comment
  CAS-BOT-BC519056  Streptopus amplexifolius Greg de Nevers 2001-4-19 12257 Humboldt Fern Canyon, Prairie Creek, Redwoods State Park 91 Comment
  RSA520556  Streptopus amplexifolius Michael A. Hanson 1990-5-21 72 Humboldt On Little Creek Trail in Redwood National Park; east side of Highway 101 approximately 7 miles (11.3 km) south of Klamath Comment
  UC666814  Suksdorfia ranunculifolia Joseph P. Tracy 1935-7-24 14196 Humboldt near Ranger Station; Trinity Summit 1828 Comment
  HSC34130  Swertia radiata J. O. Sawyer 1970-6-24 2285 Humboldt Near Waterdog Lakes 1860 Comment
  UC1173691  Symphoricarpos albus var. laevigatus Joseph P. Tracy 1939-8-20 16428 Humboldt near Blue Lake (along Mad River); Mad River 15 Comment
  CAS-BOT-BC99159  Symphyotrichum chilense P. C. Everett; E. K. Balls 1959-10-25 23960 Humboldt 14 mi. W. of Willow Creek on Hwy. 299 to Arcata 502 Comment
  UC29837  Symphyotrichum chilense C. C. Marshall 1886-1-1 Humboldt Comment
  POM51379  Symphyotrichum hendersonii Joseph P. Tracy 1917-9-1 4836 Humboldt Murphy Meadow, Bald Mountain 1067 Comment
  RSA46853  Symphytum asperum Doris K. Kildale 1927-6-26 3588 Humboldt Wildcat Grade near Ferndale. Comment
  RSA168800  Symphytum asperum Joseph P. Tracy 1943-10-3 17448 Humboldt Near Iverson dairy ranch, Arcata. Comment
  UC582543  Synthyris reniformis Joseph P. Tracy 1923-3-10 6152 Humboldt Van Duzen River, near Grizzly Creek; Van Duzen River 91 Comment
  HSC6243  Tanacetum bipinnatum H. E. Parks Sep 1941 24216 Humboldt Little River Comment
  HSC6248  Tanacetum bipinnatum J. W. Johnson 1962-6-4 1405 Humboldt W end of Hollow 10, W.M Lanphere Farm, Samoa Peninsula Comment
  RSA89773  Tanacetum camphoratum P. A. Munz 1954-7-25 19869 Humboldt On sand dunes at Humboldt Lighthouse south of Samoa. Comment
  HSC34807  Taraxacum officinale Lon Hall 1975-4-4 293 Humboldt Arcata. In front of 1735 J St. 15 Comment
  POM319589  Taxus brevifolia Patricia Wilder 1968-8-22 4429 Humboldt Bull Creek Flat, Humboldt Redwood State Park, north of Weott and west of U. S. 101. Coast Mountain range, south fork of Eel River. 61 Comment
  HSC102633  Tellima grandiflora M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-29 1618 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1579 Comment
  UC162865  Thalictrum fendleri var. polycarpum Joseph P. Tracy 1908-6 2714 Humboldt opposite Buck Mountain; Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  JEPS60709  Thalictrum fendleri var. polycarpum Joseph P. Tracy 1933-5-20 12256 Humboldt Mattole Valley Northern Coast Ranges 30 Comment
  UC503058  Thelypteris nevadensis Joseph P. Tracy 1932-7-20 10743 Humboldt Trinity Summit; Klamath Mts. 1371 Comment
  HSC35757  Thermopsis gracilis Thomas W. Nelson, James Nelson, Jane P. Nelson 1975-7-15 2000 Humboldt French Camp, Bald Hills. Comment
  CAS-BOT-BC81310  Thuja plicata Carl B. Wolf 1930-10-25 1764 Humboldt 9 miles above Blue Lake along road to Willow Creek (Lord Ellis Road) 243 Comment
  OBI35885  Thuja plicata David J. Keil 1983-7-1 17294 Humboldt Between Ferndale and Bear River Ridge Rd along Mattole Rd Comment
  RSA28962  Thuja plicata E. K. Balls, Percy C. Everett 1953-10-11 18632 Humboldt 3.3 miles south of Ferndale on Old Coast Road from Petrolia 366 Comment
  RSA47094  Thuja plicata Doris K. Kildale 1926-8-28 2566 Humboldt Morrison gulch - Bear River ridge 412 Comment
  SBBG56417  Thuja plicata H. E. Parks 1932-7-25 1139 Humboldt Camp 21, Hammond Lumber Co, Trinidad 152 Comment
  HSC6991  Thysanocarpus curvipes D. E. Anderson 1962-5-1 2204 Humboldt 1 mi. W of Hoopa Comment
  JEPS49715  Tiarella trifoliata var. unifoliata Chesnut and Drew 1888-7-8 Humboldt Arcata Comment
  UC858903  Tiarella trifoliata var. unifoliata Elizabeth Parsons Hawver Jun 1905-June 1915 Humboldt Carlotta Comment
  HSC20435  Tiarella trifoliata var. unifoliata W. D. Stevens 1967-7-14 35 Humboldt Along Bear Creek, 1/2 mi. upstream from Hwy. 101 bridge. Comment
  JEPS49714  Tiarella trifoliata var. unifoliata Milo S. Baker 1923-7-19 82 c Humboldt canyon near Carlotta; canyon near Carlotta Comment
  UC1073332  Tiarella trifoliata var. unifoliata George B. Rossbach 1955-6-10 299 Humboldt between Route 101 and West Branch of South Fork of Eel River (Stephens Redwood Grove); , btw Rte and W Branch of S Fk Eel Riv Comment
  HSC62637  Tolmiea diplomenziesii R. D. Zortman 1963-5-12 43 Humboldt 5 mi. NE of Arcata, S of the Mad River, off Warren Creek Rd. 91 Comment
  UC169095  Tonella tenella Mrs. M. H. Manning Apr 1902 Humboldt Hupa Comment
  UC32566  Tonella tenella W. C. Blasdale 1896-6-8 Humboldt Graham's Comment
  HSC38892  Torilis arvensis J. P. Smith, Steve Selva 1970-6-14 Humboldt Along Hwy. 96 at Whitmore Creek 152 Comment
  CAS-BOT-BC169175  Toxicodendron diversilobum Volney Rattan 1878-1-1 s.n. Humboldt Undspecified Comment
  HSC3140  Toxicodendron diversilobum R. E. Thill 1965-5-1 26 Humboldt 0.25 mi. from Korbel on the Camp Bauer Rd. Comment
  UC165853  Tracyina rostrata Joseph P. Tracy 1903-5-23 1892 Humboldt Alder Point Northern Coast Ranges 243 Comment
  UC582683  Tracyina rostrata Joseph P. Tracy 1930-6-15 8762 Humboldt Dobbyn Creek 152 Comment
  HSC70386  Trientalis latifolia M. A. Baker 1980-6-7 1859 Humboldt Near Ammon Creek 732 Comment
  UCD117587  Trientalis latifolia D. Sanchez-Mata; S. Rivas-Martinez, M. Costa, and M. Ladero 1998-6-10 s.n. Humboldt Trinidad-Patricks Point. 25 Comment
  UC1223381  Trifolium albopurpureum var. dichotomum Joseph P. Tracy 1933-5-20 12234 Humboldt s the point (mouth of Domingo Creek); Cape Mendocino Comment
  UC1223393  Trifolium albopurpureum var. dichotomum Joseph P. Tracy 1948-5-31 17989 Humboldt near Harris (West side of top of Spruce Grove Ridge) 762 Comment
  UC160917  Trifolium albopurpureum var. dichotomum Joseph P. Tracy 1910-6-5 3151 Humboldt Ocean Beach Northernb Coast Ranges, Humboldt Bay Comment
  CHSC84526  Trifolium arvense John Dittes; Josephine Guardino 2003-6-7 2003 -65 Humboldt Klamath Range; ca. 7.7 air-mile southwest of Orleans, ca. 4.1 air-miles northeast of confluence of Trinity River and Klamath River, ca. 0.3, air-mile northwest of confluence of Klamath River and Aikens Creek. Along entrance road to Aikens Creek Campground. 106 Comment
  UC1197057  Trifolium bifidum var. decipiens J. P. Tracy 1900-6-5 846 Humboldt immediate vicinity Eureka 0 Comment
  HSC71469  Trifolium breweri J. P. Smith, J. O. Sawyer 1973-5-12 6675 Humboldt 3.3 mi. from Redwood Creek on Hoopa Rd. Comment
  UC162784  Trifolium campestre J. P. Tracy 1906-6-25 2512 Humboldt immediate vicinity Eureka 0 Comment
  HSC15111  Trifolium depauperatum Francis Winter 1960-4-24 Humboldt Redwood Creek Ranch 381 Comment
  UC1103438  Trifolium depauperatum var. depauperatum Joseph P. Tracy 1921-5-30 5481 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  UC1223467  Trifolium dubium Joseph P. Tracy 1939-4-29 16261 Humboldt Orleans 121 Comment
  UC1197033  Trifolium fucatum Joseph P. Tracy 1932-5-10 9963 Humboldt near Petrolia (Mattole River); North Coast Ranges 15 Comment
  HSC15124  Trifolium fucatum Francis Winter 1960-4-24 Humboldt Redwood Creek Ranch 381 Comment
  HSC43108  Trifolium fucatum Maralyn O'Meara 1974-5-14 360 Humboldt Along Hwy. 36, 7.1 mi. E of Bridgeville Comment
  HSC45169  Trifolium hirtum R. Sutherland 1978-5-13 1 .13578 Humboldt 285 Comment
  UC495656  Trifolium longipes subsp. hansenii Joseph P. Tracy 1930-6-8 8726 Humboldt Northern Coast Ranges. Kneeland Prairie. 762 Comment
  HSC31201  Trifolium longipes subsp. oreganum D. E. Anderson 1972-6-20 5757 Humboldt Along the N slope of Horse Mtn. Comment
  UC1223370  Trifolium longipes var. hansenii Joseph P. Tracy 1950-8-8 19298 Humboldt Croghan Hole Trinity Summit 1676 Comment
  UC162780  Trifolium longipes var. hansenii Joseph P. Tracy 1908-6 2919 Humboldt nw slopes Buck Mtn; Northern Coast Ranges 1219 Comment
  UC1223359  Trifolium macraei Joseph P. Tracy 1950-6-8 18729 Humboldt Bear River Ridge 609 Comment
  UC1541577  Trifolium microcephalum Harold E. Parks May 1930 883 Humboldt Laribee Valley 762 Comment
  HSC100537  Trifolium microcephalum Carl C. Marshall May 1886 235 Humboldt Near Trinidad. Comment
  HSC45140  Trifolium microcephalum R. Sutherland 1978-5-19 6 .19578 Humboldt Bridge over Redwood Creek at 'Shop Rd. 128 Comment
  UC1223355  Trifolium microcephalum Joseph P. Tracy 1939-4-29 16237 1/2 Humboldt mouth of Slate Creek (banks of Klamath River) Comment
  HSC45144  Trifolium microdon R. Sutherland 1978-5-19 15 .19578 Humboldt 165 Comment
  CDA30206  Trifolium obtusiflorum M. K. Beyers, I. Shepardson 2009-9-13 245 Humboldt In dry portion of the western side of the Eel River, near the base of the entrance of an inlet creek, that runs underneath State Route 254 (Avenue of the Giants) and Highway 101 here. 0 Comment
  UC1197487  Trifolium oliganthum Joseph P. Tracy 1932-5-1 9870 Humboldt Garberville vicinity Northern Coast Ranges 121 Comment
  UC1223330  Trifolium pratense Joseph P. Tracy 1941-8-23 16995 Humboldt Eureka Comment
  UC33491  Trifolium repens Chesnut and Drew 1888-7-11 Humboldt Eureka Comment
  HSC71616  Trifolium repens J. P. Smith 1973-5-26 6822 Humboldt Scotia Bluffs along the Eel River near Rio Dell Comment
  JEPS4140  Trifolium variegatum var. melananthum Joseph P. Tracy 1918-7-3 4990 Humboldt Shelter Cove North Coast Ranges 15 Comment
  UC1197553  Trifolium variegatum var. melananthum Joseph P. Tracy 1930-5-18 8695 Humboldt Roseville golf course Northern Coast Ranges 152 Comment
  JEPS4144  Trifolium variegatum var. variegatum Joseph P. Tracy 1929-5-5 8570 Humboldt Miranda Northern Coast Ranges, South Fork Eel River 121 Comment
  UC1223532  Trifolium variegatum var. variegatum Joseph P. Tracy 1950-6-29 18938 Humboldt 6 mi se Arcata (Fickle Hill) Comment
  UC1223311  Trifolium willdenovii Joseph P. Tracy 1934-4-8 13170 Humboldt betw Miranda and Redway South Fork of Eel River Comment
  HSC15172  Trifolium willdenovii D. E. Anderson 1962-5-1 2191 Humboldt Junction of Redwood Creek Rd. and rd. to Hoopa Comment
  RSA168852  Trifolium wormskioldii Joseph P. Tracy 1950-6-8 18714 Humboldt Near the Sand Cut. Wild Cat Road, 2 miles south of Ferndale. Comment
  RSA639406  Trifolium wormskioldii Robert F. Thorne, Percy C. Everett, K. Thorne 1965-8-7 35225 b Humboldt Samoa Peninsula. 3 Comment
  HSC89895  Triglochin maritima Leonel Arguello 1989-6-11 Humboldt Lanphere-Christensen Dunes Preserve, 3 mi. W of Arcata Comment
  CAS-BOT-BC451805  Triglochin maritima Bohmannson 1906-5-1 s.n. Humboldt Samoa, Humboldt Bay Comment
  HSC28002  Trillium kurabayashii Maralyn O'Meara 1972-5-29 77 Humboldt 18.6 mi. up Bald hills Rd. from junction with Hwy. 101 near Orick 915 Comment
  HSC96776  Trillium kurabayashii M. Mesler 2006-5-25 603 Humboldt Bald Hills FS, 18.8 mi. SE of Hwy. 101 915 Comment
  CHSC24865  Trillium ovatum W. A. Vaccaro 1976-4-4 1 Humboldt Population ca. 300 yds ne of intersection of Cedar St. and W. St., Cutten. 45 Comment
  HSC57025  Trillium ovatum Overton, Butler 1979-7-24 9646 Humboldt Near Friday Camp, close to the town of Willow Creek. 1250 Comment
  HSC89454  Trillium ovatum M. Roantree 1985-4-28 25 Humboldt NW side of Trinidad Head along trail Comment
  SEINET12051379  Trillium ovatum F. H. Utech, Sato, T.; Ohara, M. 1990-1 90 -289 Humboldt Humboldt Redwoods State Park, Jensen Grove 50 Comment
  UC1103503  Trillium ovatum Joseph P. Tracy 1933-6-13 12587 Humboldt near summit of rd. from Hoopa w. to Bair's (Hoopa Mt.); Hoopa Mt. 1066 Comment
  CAS-BOT-BC521311  Trillium rivale Joseph P. Tracy 1949-6-25 18345 , 18425 Humboldt Trinity Summit; Mud Springs, in sperpentine area. 1341 Comment
  UC198870  Triodanis biflora Chesnut and Drew 1888-7-9 Humboldt Kneeland Comment
  UC416790  Triodanis biflora Harley P. Chandler 1901-6-16 1514 B Humboldt Somes Bar North Coast Ranges, Klamath River, Somes Bar (Camp 276) 426 Comment
  SEINET10459889  Triodanis perfoliata Tracy TRACY 10154 Humboldt WILLOW CREEK Comment
  BLMAR608  Triphysaria eriantha Jennifer Wheeler 2011-4-1 608 Humboldt King range, located before McNutt Gulch on Mattole Rd Comment
  CHSC118618  Triphysaria eriantha subsp. eriantha Richard R. Halse 2016-3-24 9683 Humboldt Along U.S. Hwy. 101 ca. 9.5 miles south of Garberville, just north fo the Mendocino County Line. 168 Comment
  UC1222798  Triphysaria eriantha subsp. eriantha Joseph P. Tracy 1950-6-18 18765 Humboldt 1 mi w Petrolia (hills between town and Ocean); hills between Petrolia and Ocean Comment
  JEPS10422  Triphysaria eriantha subsp. rosea Joseph P. Tracy 1941-4-3 Humboldt Samoa , Samoa (Humboldt Bay) Comment
  UC176946  Triphysaria pusilla Joseph P. Tracy 1913-6-18 4196 Humboldt opposite Buck Mountain (Dinsmore's Ranch); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  RSA249348  Triphysaria versicolor subsp. versicolor James Payne Smith 1974-5-16 7370 Humboldt Arcata; growing in abundance in the Median strip along Samoa Blvd. near Sunny Brae. Comment
  UC33738  Trisetum canescens Joseph Burtt Davy and Walter C. Blasdale 1899-6-9 5369 Humboldt ridge near Harris Comment
  HSC13410  Trisetum canescens D. C. Juve 1964-5-16 45 Humboldt 1 mi. N of Tish-tang Ranger Station on Hwy. 96. Comment
  UCD93910  Trisetum cernuum Joseph P. Tracy 1940-8-11 16695 Humboldt Trinity River Valley, near Willow Creek. At Raccoon Creek. 152 Comment
  UC1197723  Triteleia bridgesii Joseph P. Tracy 1911-7-7 3413 Humboldt viz. ridge n Willow Creek (between Willow and Campbell Creeks, near the summit); Northern Coast Ranges, Brannan Mountain 1219 Comment
  HSC32556  Triteleia hyacinthina Thomas W. Nelson 1973-7-10 1034 Humboldt Humboldt/Trinity County line, Mt. Lassic (Signal Peak) 1790 Comment
  CAS-BOT-BC519141  Triteleia hyacinthina Tom Craig 1941-7-2 s.n. Humboldt Near Yager Comment
  JEPS58060  Triteleia laxa W. L. Jepson 1921-8-11 9412 a Humboldt Big Lagoon, Humboldt coast Big Lagoon Comment
  CAS-BOT-BC526352  Triteleia laxa Joseph P. Tracy 1930-7-6 8841 Humboldt Kneeland Prairie 762 Comment
  SEINET12053134  Triteleia laxa Unknown 1936-1 13196 Humboldt near Ukiah Comment
  UC666895  Triteleia laxa Joseph P. Tracy 1932-6-26 10269 Humboldt high grassy ridges Fort Baker 762 Comment
  UC1222685  Triteleia peduncularis Joseph P. Tracy 1950-6-15 18770 Humboldt near Redcrest Resort (Englewood); Englewood 91 Comment
  CAS-BOT-BC85900  Tsuga heterophylla Doris K. Kildale 1926-3-25 1629 Humboldt Liscom Hill, Mad River near Essex 30 Comment
  HSC14489  Umbellularia californica Francis Winter 1960-4-24 Humboldt 2 mi. NE of Redwood Creek Ranch 610 Comment
  HSC59799  Umbellularia californica Clark L. Miller 1979-5-24 8 Humboldt At 880 Central Ave. McKinleyville Comment
  UC1196283  Umbellularia californica Joseph P. Tracy 1920-10-24 5405 Humboldt North Fork of Mad River, at Camp Bauer North Fork of Mad River; Northern Coast Ranges, North Fork of Mad River 60 Comment
  SEINET12103378  Umbellularia californica J. P. Tracy 1950-12-10 s.n. Humboldt no further locality Comment
  HSC39935  Vaccinium cespitosum J. O. Sawyer 1970-6-24 2285 Humboldt Near Waterdog Lakes 1860 Comment
  UC1197771  Vaccinium cespitosum J. P. Tracy 1906-4-22 2415 Humboldt immediate vicinity Eureka; , Ricks Prairie 0 Comment
  CAS-BOT-BC199319  Vaccinium ovatum L. B. Kildale 1930-9-9 10408 Humboldt Bald Mountain 914 Comment
  CAS-BOT-BC199324  Vaccinium ovatum L. R. Abrams 1918-6-16 7188 Humboldt Willow Creek Comment
  HSC7906  Vaccinium ovatum J. W. Johnson 1962-3-25 1418 Humboldt Arcata, along section line, Christenson Farm, Samoa Peninsula Comment
  UC1193355  Vaccinium ovatum P. Zinke 1950-9-21 165 Humboldt se slope Kerr Peak (Quad 29C2) 609 Comment
  UC154182  Vaccinium ovatum Harley P. Chandler Jun 1901 1397 Humboldt Hupa Indian Reservation North Coast Ranges, Hupa Valley 152 Comment
  CAS-BOT-BC199407  Vaccinium parvifolium Alice Eastwood 1907-4-22 s.n. Humboldt Unspecified Comment
  CAS-BOT-BC199410  Vaccinium parvifolium Elizabeth Parsons Hawver 1915-6-1 s.n. Humboldt Carlotta Comment
  HSC37332  Vaccinium parvifolium Gary S. Lester, Roger L. Yearout, Judith G. Dickson 1974-7-24 477 Humboldt Along Lost Man Creek. 38 Comment
  UC1197780  Vaccinium parvifolium Joseph P. Tracy 1931-4-26 9341 Humboldt Willow Creek Canyon Northern Coast Ranges 609 Comment
  CAS-BOT-BC199493  Vaccinium uliginosum Joseph P. Tracy 1932-7-14 10564 Humboldt Trinity Summit, Corral Prairie 1584 Comment
  UC314631  Vaccinium uliginosum subsp. occidentale Joseph P. Tracy 1924-7-13 6725 Humboldt Big Lagoon Northern Coast Region 6 Comment
  CAS-BOT-BC76046  Vancouveria hexandra Elizabeth Parsons Hawver 1915-6-1 s.n. Humboldt Carlotta. Comment
  HSC99463  Vancouveria hexandra K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-14 117 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  HSC3385  Vancouveria hexandra W. Jan Rowe 1966-5-11 40 Humboldt 100 ft. E of HSC campus, Arcata 46 Comment
  HSC37713  Vancouveria hexandra J. D. Ackerman, A. M. Montalvo 1974-7-17 373 Humboldt Van Duzen Co. Park, off Hwy. 36, 6 mi. E of Carlotta 61 Comment
  CAS-BOT-BC76084  Vancouveria planipetala Doris K. Kildale 1926-6-27 2192 Humboldt Sweasey Lake, McClellan Mountain. 822 Comment
  CAS-BOT-BC76085  Vancouveria planipetala Doris K. Kildale 1928-5-19 5204 Humboldt Chalk Mountain. Comment
  BLMAR34  Vancouveria planipetala Jennifer Wheeler 34 Humboldt King range Comment
  CAS-BOT-BC528851  Veratrum californicum Joseph P. Tracy 1934-6-21 13244 Humboldt Local in wet place at Still Ranch 2 mi. S of Fields Landing (exterminated there about 1937) 6 Comment
  HSC65843  Veratrum insolitum Gail Newton 1980-6-16 184 Humboldt Near Onion Mtn. 1280 Comment
  UC1198210  Veratrum insolitum Joseph P. Tracy 1947-7-5 17820 Humboldt in open prairie Trinity Summit 1524 Comment
  UC582590  Verbascum blattaria Joseph P. Tracy 1937-6-26 15366 Humboldt Trinity River Valley at Willow Creek; Trinity River Valley at Willow Creek 152 Comment
  HSC21173  Verbascum thapsus H. D. Sumner 1959-7-13 Humboldt Redwood Creek near Hwy. 299 305 Comment
  HSC21737  Verbena lasiostachys D. E. Anderson 1963-10-6 2880 Humboldt Mad River bed, across from Essex Junction. Comment
  JEPS39084  Verbena lasiostachys var. lasiostachys Lincoln Constance 1934-5-26 660 Humboldt s end Dyerville Bridge; S Fork Eel River 45 Comment
  HSC21186  Veronica americana R. D. Modafferi 1965-5-1 64 Humboldt 2.3 mi. N of Trinidad on Trinity St. 0 Comment
  SEINET10782119  Veronica americana J. Richard Abbott, B. S. Carlsward 1999-7-7 Abbott 13018 Humboldt North of McKinleyville off U.S. 101 (a few kilometers north of Eureka), Clam Beach County Park. Comment
  HSC99374  Veronica serpyllifolia subsp. humifusa K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-6-24 23 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  UC1198063  Veronica serpyllifolia subsp. humifusa Joseph P. Tracy 1935-7-23 14152 Humboldt Trinity Summit, at McKay Prairie Trinity Summit; , McKay Prairie 1584 Comment
  HSC2102  Vicia americana var. americana Elrid H. Spinas 1948-6-16 54 Humboldt Horse Mtn. Comment
  HSC99295  Vicia americana var. americana Jimerson, J. Pageau 1979-8-10 719 Humboldt Near Tish Tang A Tang Ridge, close to the town of Hoopa 1464 Comment
  BLMAR723  Vicia gigantea Jennifer Wheeler 2014-4-20 723 Humboldt South Spit/Mike Thompson Wildlife Area, South Jetty Rd on Table Bluff cliff face 3 Comment
  UC17003  Vicia gigantea Joseph Burtt Davy and Walter C. Blasdale 1899-6-11 5434 Humboldt near Hubbard Station Comment
  UCSC000430  Vicia sativa H. S. Yates 1936-6-23 5870 Humboldt 13 miles S.E. of Scotia Comment
  JEPS29847  Vicia sativa subsp. nigra Rimo Bacigalupi and L. Heckard, J. Weiler 1961-6-23 7837 Humboldt about 1 mi w of Carlotta (or 1/2 mi e of Hydesville) Comment
  HSC86732  Vicia sativa subsp. nigra D. K. Imper May 1987 Humboldt Near Eureka Comment
  HSC15277  Vicia sativa subsp. sativa N. R. Waite 1965-5-21 53 Humboldt W edge of Humboldt State College Campus. Comment
  HSC44738  Vicia sativa subsp. sativa Maralyn O'Meara 1972-6-8 86 Humboldt Along Bald Hills Rd, 16.4 mi. E of junction with Hwy. 101 Comment
  HSC3225  Vinca major D. K. Smith 1968-2-2 4 Humboldt On the bank of Crannell Rd. past the bridge Comment
  CAS-BOT-BC263946  Viola adunca L. B. Kildale 1930-5-11 9543 Humboldt Bald Hills 853 Comment
  SEINET200809 Image available Viola adunca Joseph P. Tracy, Ernest B. Babcock 1912-5-11 3586 Humboldt Near Hydesville 30 Comment
  UC1761603  Viola adunca C. V. Piper 1921-5-22 Humboldt Eureka Comment
  HSC48825  Viola bakeri Brad Klipfel, J. P. Smith, J. O. Sawyer 1973-5-27 36 Humboldt Grogan's Hole near N Trinity Mtn. 1829 Comment
  UC502937  Viola bakeri Joseph P. Tracy 1932-7-15 10596 Humboldt ridges e of Corral Prairie; Klamath Mountains, Trinity Summit 1828 Comment
  HSC32130  Viola glabella D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5592 Humboldt Mt. Lassic and two smaller peaks to immediate E 1768 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
  UC164832  Viola glabella Joseph P. Tracy 1910-4-17 3118 Humboldt near forks of Elk River (region about Humboldt Bay); Northern Coast Region, Humboldt Bay 0 Comment
  HSC21783  Viola glabella Francis Winter 1960-4-23 Humboldt Simpson Creek, Korbel-Maple Creek Rd. 244 Comment
  UC1103561  Viola glabella Joseph P. Tracy 1923-4-8 6178 Humboldt Carlotta; Northern Coast Ranges 60 Comment
  UC1762124  Viola glabella Milo S. Baker 1926-7 145 -26 Humboldt S. Fork Mt., 5 mi from hwy Comment
  HSC33056  Viola hallii Thomas W. Nelson 1974-5-7 1234 Humboldt Beside airstrip at Kneeland Prairie Comment
  RSA21092  Viola hallii Carl B. Wolf 1937-6-14 8820 Humboldt Kneeland Prairie; North Coast Range. 823 Comment
  UC1103556  Viola macloskeyi Joseph P. Tracy 1933-7-16 12780 Humboldt South Fork Mountain at McKay Camp McKay Camp; South Fork Mountain, McKay Camp 1676 Comment
  UC66204  Viola ocellata Mrs. M. H. Manning June 1901 Humboldt near Hupa Comment
  JEPS50264  Viola palustris Joseph P. Tracy 1927-4-23 7919 Humboldt Big Lagoon; Northern Coast Ranges, Big Lagoon 3 Comment
  SEINET201005 Image available Viola palustris J. P. Tracy 1904-7-31 2126 Humboldt Eureka 61 Comment
  HSC38790  Viola praemorsa subsp. praemorsa J. P. Smith 1976-5-30 8823 Humboldt Near Black Rock on the road to Clear Lake 1524 Comment
  UC575310  Viola praemorsa subsp. praemorsa Milo S. Baker 1935-4-18 8059 Humboldt about 2 mi w of Bridgeville (Kneeland Hwy on road to Carlotta, near headwaters of South Fork of Yager); South Fork of Yager Comment
  RSA249436  Viola purpurea subsp. integrifolia D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5591 Humboldt Mount Lassic and 2 smaller peaks to immediate east. 1768 Comment
  HSC36500  Viola purpurea subsp. purpurea Thomas W. Nelson, Jane P. Nelson, James Nelson 1975-6-14 1892 Humboldt Beside branch off FS 2S08 to Pine Mtn. Comment
  HSC51328  Viola purpurea subsp. purpurea G. L. Clifton, Overton 1979-6-3 3762 Humboldt Near Pine Mtn., close to the town of Forest Glen 1495 Comment
  HSC73542  Viola purpurea subsp. purpurea Gail Newton 1980-7-14 1478 Humboldt Near Last Chance Ridge. 1219 Comment
  RSA77739  Viola purpurea subsp. purpurea Joseph P. Tracy 1930-6-8 8730 Humboldt Kneeland Prairie. 762 Comment
  CHSC24918  Viola sempervirens M. B. Simpson 1976-4-10 21 Humboldt Ca. 1 yd s of Wagon Wheel Rd, ca. .3 mi e of West Haven Dr, ca. 13 mi n of Arcata. 121 Comment
  HSC23603  Viola sempervirens J. O. Sawyer 1971-6-14 2375 Humboldt Above E fork of Horse Linto Creek 1494 Comment
  SEINET11978067  Viola sempervirens Unknown 1936-1 113398 Humboldt Comment
  SEINET200803 Image available Viola sempervirens Joseph P. Tracy 1938-4-5 15706 Humboldt Willow Creek Canyon along Trinity Hwy. 460 Comment
  HSC37933  Vulpia bromoides Peter Sorensen 1976-6-14 Humboldt N Spit Comment
  HSC9843  Vulpia bromoides D. B. Bader 1963-3-29 33 Humboldt Second of the Clam Beach Lagoons, W of Hwy. 101. Comment
  HSC39399  Vulpia myuros D. E. Anderson, J. P. Smith 1971-6-28 - 1253 Humboldt 2.5 mi. S of Blue Lake along the Mad River Comment
  HSC9943  Vulpia myuros Gene S. Van Horn 1962-5-10 14 Humboldt H.S.U campus, between Administration Building and College Commons, Arcata. 46 Comment
  SEINET10609151  Vulpia myuros var. myuros Joseph P. Tracy 1914-5-14 Tracy 4432 Humboldt Fort Seward. 122 Comment
  HSC24380  Whipplea modesta J. O. Sawyer 1970-6-24 2242 Humboldt Ridge on Big Hill Rd., E of Hoopa 1189 Comment
  HSC40231  Whipplea modesta J. P. Smith, J. O. Sawyer 1976-5-2 8621 Humboldt 3.7 mi. N of junction with Hwy. 299 on Hwy. 96 61 Comment
  HSC62987  Whipplea modesta David Wheeler 1979-4-21 77 Humboldt 4 mi. past Maple Creek bridge over Mad River on the way to Eureka, hills above Butler Valley Comment
  UC1198902  Whipplea modesta Joseph P. Tracy 1942-6-23 17232 Humboldt near Box Camp; Trinity Summit 1524 Comment
  CHSC70127  Wisteria floribunda Katie Grenier 1988-4-22 271 Humboldt Humboldt State University, S. side of Plant Operations Bldg. on 14th St., growing on fence. Comment
  HSC35285  Woodwardia fimbriata Lon Hall 1975-3-27 296 Humboldt Near Shelter Cove at edge of Bear Creek 366 Comment
  HSC74374  Wyethia angustifolia M. A. Baker 1980-6-28 2493 Humboldt Near Mad River Buttes 1445 Comment
  UC582637  Wyethia angustifolia Joseph P. Tracy 1936-6-17 14947 Humboldt grassy slopes on nw foothills of lower slopes Buck Mountain 762 Comment
  UCSB23112  Wyethia angustifolia Haller, John 1967-6-17 Humboldt Ferndale-Petrolia Road, 12 miles by road southwest of Ferndale, 3 miles northeast of Bear River Bridge at "Capetown" 152 Comment
  HSC71800  Wyethia longicaulis M. A. Baker 1980-6-8 1924 Humboldt Near Buck Flat. 1554 Comment
  JEPS32115  Wyethia longicaulis Jos. P. Tracy 1923-6-21 4254 Humboldt near summit of ridge between Van Duzen and Mad Rivers (Dinsmore Ranch) 1066 Comment
  UC186457  Xanthium strumarium Joseph P. Tracy 1915-9-12 4673 Humboldt Mouth of Laribee Creek Northern Coast Ranges 60 Comment
  HSC56963  Xerophyllum tenax Overton, Butler 1979-7-23 9481 Humboldt Near Horse Mtn. Creek, close to the town of Willow Creek 1326 Comment
  CAS-BOT-BC527077  Xerophyllum tenax Joseph P. Tracy 1937-8-15 15665 Humboldt French Camp 1066 Comment
  SEINET12197025  Zauschneria californica E. A. York 1990-1-10 2675 Humboldt USGS Redwood Field Station, Arcata Comment
  UC1173722  Zigadenus micranthus var. micranthus Harold E. Parks and Joseph P. Tracy 1934-6-27 11041 Humboldt Horse Mountain 1432 Comment
  UC275515  Zigadenus micranthus var. micranthus Joseph P. Tracy 1924-7-4 6521 Humboldt Valley South Yager Creek; Northern Coast Ranges, Valley South Yager Creek 762 Comment
  CDA39399  Zigadenus venenosus Ball 1932-6-1 s.n. Humboldt [no further information]. 0 Comment



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