Search Results — 2000 specimen records retrieved (1368 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
  CAS-BOT-BC77963  Abies concolor Henry M. Pollard 1944-9-1 s.n. Humboldt Orleans Mt. 1524 Comment
  HSC54602  Abies concolor Overton, Butler 1979-7-24 9684 Humboldt Near Friday Camp, close to the town of Willow Creek. 1250 Comment
  CAS-BOT-BC78054  Abies grandis L. R. Abrams 1916-7-18 6032 Humboldt Arcata to Trinidad Comment
  CAS-BOT-BC78060  Abies grandis Doris K. Kildale 1926-11-27 2841 Humboldt Alton Hill 45 Comment
  HSC13030  Abies grandis D. Santana, C. Kline Oct 1970 3 Humboldt HSC Campus Comment
  HSC76304  Abies magnifica Teresa Prendusi 1981-7-24 480 Humboldt Near Whiteys Peak 1585 Comment
  CAS-BOT-BC73463  Abies procera G. L. Anderson 1962-8-21 5 Humboldt Six Rivers National Forest - extension of known ridge, Horse Trail Ridge, southwest slope. 1828 Comment
  HSC16135  Abronia latifolia R. E. Hafenfeld 1965-5-9 54 Humboldt Junction of County Rd. and Gold Bluff Beach Rd. Comment
  UCD170784  Abronia latifolia Gordon Leppig; Sylvia Leppig and Kai Neander 1998-5-6 746 Humboldt Dry Lagoon State Park, between ocean and Dry Lagoon. 2 Comment
  RSA0025092  Abronia latifolia Mildred E. Mathias 1929-8-4 769 Humboldt Along the coast near Eureka. Comment
  UC55523  Abronia latifolia P. E. Goddard 1901-8-6 180 Humboldt Regna Beach Comment
  CAS-BOT-BC436976  Acaena novae-zelandiae T. C. Fuller 1966-10-4 15236 Humboldt 1 mile northwest of Fieldbrook Comment
  CAS-BOT-BC436986  Acaena novae-zelandiae D. W. Cooper 1967-6-30 s.n. Humboldt On ridge just southeast of Forest Service Nursery, ca. 2 miles southeast of Crannell and ca. 4 miles east of U.S. Highway 101 Comment
  HSC74463  Acer circinatum M. A. Baker 1980-5-18 1360 Humboldt Near Black Mtn. 792 Comment
  POM89162  Acer circinatum Joseph P. Tracy 1920-8-1 5346 Humboldt Kneeland Prairie Lawrence Creek 457 Comment
  SEINET3026058 Image available Acer circinatum Joseph P. Tracy 1942-7-26 17294 .5 Humboldt Valley of SOuth Yager Creek 610 Comment
Read comments
May 1 2015
  UC205486  Acer circinatum Joseph P. Tracy 1920-8-1 5346 Humboldt Lawrence Creek Kneeland Prairie 457 Comment
  HSC2810  Acer macrophyllum Francis Winter 1960-4-23 Humboldt 1.0 mi. N of Dollar Ranch on Korbel-Maple Creek Rd. 229 Comment
  CDA23775  Acer negundo var. californicum Jeanette N. Griffin 2008-8-28 s.n. Humboldt Ferndale 0 Comment
  HSC72789  Achillea millefolium M. A. Baker 1980-6-26 2399 Humboldt Near Sims Creek 610 Comment
  HSC97953  Achillea millefolium Cara Witte 2007-6-21 320 Humboldt Board Camp Mountain. Forest Service Road 4N38. 1419 Comment
  RSA50430  Achillea millefolium var. arenicola G. R. Campbell 1949-6-28 s.n. Humboldt Collected near pool on Administration Grounds of Botanic Gardens, grown under prop. No. 5487 (seed collected by P. C. Everett, July 20, 1947, on coastal sand dunes, mouth of little river, along hwy 101, north of Eureka) Comment
  HSC97562  Achlys californica Cara Witte 2007-6-1 177 Humboldt Along Forest Service 5N10. 1.75 miles east of intersection with National Forest 1. 1365 Comment
  UC34152  Achnatherum lemmonii Joseph Burtt Davy 1899-6-8 5348 Humboldt Harris Comment
  UCD50697  Achnatherum lemmonii A. H. Murphy 1947-6-25 s.n. Humboldt Lassic Peak Road, northeast of Blockburg. Humboldt County, California. Comment
  UC552728  Achnatherum occidentale subsp. occidentale Joseph P. Tracy 1935-7-26 14272 Humboldt Water Dog Lakes Trinity Summit 1828 Comment
  RSA47136  Achyrachaena mollis Doris K. Kildale 1925-5-31 s.n. Humboldt Bucilana Bridge, river terrace Comment
  UCD103770  Acmispon americanus var. americanus Linda M. Barker 1976-6-1 1548 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  HSC45096  Acmispon micranthus R. Sutherland 1978-5-13 3 .13578 Humboldt Mattole River. 282 Comment
  UCD104321  Acmispon parviflorus P. B. Kennedy 1929-6-12 s.n. Humboldt Around Eureka. 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
  HSC55857  Actaea rubra G. L. Clifton, Griswold 1979-7-25 10846 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1784 Comment
  HSC56125  Actaea rubra G. L. Clifton, Griswold 1979-8-1 11914 Humboldt Near Mill Creek Lakes, close to the town of Hoopa. 1692 Comment
  CAS-BOT-BC391593  Actaea spicata var. arguta Doris K. Kildale 1926-8-15 2501 Humboldt Willow Creek Canyon 769 Comment
  SDSU19197  Adelinia grandis Michael G. Simpson, Michael Mesler and Michael Mayer 2008-5-27 3007 Humboldt Six Rivers National Forest. From Hwy 299, take Titlow Hill Road (at Berry Summit) ca. 7.5 miles south, west 0.2 miles to Cold Spring. Ca. 0.2 mile south-southeast of Cold Spring. Ca. 3.3 aerial miles south-southeast of Horse Mtn. Radio Tower. 1416 Comment
  SEINET10473553  Adenocaulon bicolor Mary Merello 1993-6-19 Merello 660 Humboldt Along the Weott-Honeydew Road just outside of the Rockerfeller Forest boundary. Redwood Forest. 90 Comment
  BLMAR214  Adenocaulon bicolor Jennifer Anthony-Wheeler 1996-7-9 214 Humboldt Pilot ridge., growing in shady woods 1310 Comment
  HSC40126  Adenocaulon bicolor Thomas W. Nelson, James Nelson 1976-7-28 3075 Humboldt Along small creek E of old road from Goat Mountain lookout to branch road of FS 2S08 N of Alder Springs. 1555 Comment
  CHSC21826  Adiantum aleuticum D. Joley 1967-8-17 Humboldt Found 10 mi e of Fortuna. Comment
  HSC28929  Adiantum aleuticum Diane Johnson 1972-12-4 Humboldt Butler Valley near Big Bend Rd. Comment
  JEPS35153  Adiantum aleuticum W. L. Jepson 1921-9-10 9461 Humboldt Garberville Comment
  POM182348  Adiantum aleuticum Joseph P. Tracy 1907-8-20 2604 Humboldt Hydesville 30 Comment
  POM182458  Adiantum aleuticum Joseph P. Tracy, H. H. Tracy 1916-6-25 4742 Humboldt Redwood Creek, East of Trinidad 152 Comment
  SD92989  Adiantum aleuticum W. Bertsch 1953-7-29 213 Humboldt Near Weott 60 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
  HSC31797  Aesculus californica Steve Selva, Roger Jensen 1974-8-27 80 Humboldt W of Humboldt-Trinity co. line on Hwy. 299 Comment
  UC479099  Aesculus californica Marcus E. Jones, A. M. 1931-7-12 28938 Humboldt Alton Comment
  HSC76197  Agastache urticifolia Overton, Butler 1979-8-2 12510 Humboldt Near Bret Hole, close to the town of Hoopa 1554 Comment
  UC127705  Ageratina occidentalis Joseph Burtt Davy and Walter C. Blasdale 1899-6-26 5884 Humboldt Francis Range North-Western California Comment
  RSA167313  Agoseris aurantiaca Joseph P. Tracy 1949-8-7 18441 Humboldt Trinity Summit, meadow at Box Camp 1463 Comment
  HSC4595  Agoseris grandiflora J. W. Johnson 1961-8-17 1004 Humboldt Arcata, W.M. Lanphere Farm, Samoa Peninsula. Comment
  SEINET202732 Image available Agoseris grandiflora Joseph P. Tracy 1945-7-15 17513 Humboldt Trinty River Valley at Willow Creek. 152 Comment
  UC1199116  Agoseris grandiflora var. grandiflora Joseph P. Tracy 1930-7-27 8899 Humboldt Bear River Ridge Northern Coast Ranges, Bear River Ridge 609 Comment
  UC582746  Agoseris heterophylla var. heterophylla Joseph P. Tracy 1930-6-21 8775 C Humboldt Larrabee Valley; Northern Coast Ranges 701 Comment
  HSC32335  Agoseris retrorsa D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5616 Humboldt Mt. Lassic and two smaller peaks to immediate E 1768 Comment
  UC34646  Agoseris retrorsa Chesnut and Drew 1888-7-21 Humboldt S. Fork Mt. Comment
  SEINET200944  Agrostis Joseph P. Tracy 1927-7-17 8271 Humboldt Three cabins On lower western foothills of Chaparral Mountain. 457 Comment
  UC1103368  Agrostis alba J. P. Tracy 1900-9-2 933 1/2 Humboldt immediate vicinity Eureka 0 Comment
  RSA152379  Agrostis densiflora Joseph P. Tracy 1936-6-8 14873 Humboldt Trinidad 6 Comment
  UC526894  Agrostis densiflora Joseph P. Tracy 1927-6-26 8216 Humboldt on bluffs facing ocean North Coast Ranges, Stone Lagoon 6 Comment
  CAS-BOT-BC127281  Agrostis exarata Joseph P. Tracy 1927-7-17 8285 Humboldt Northern Coast Ranges. Three Cabins. Chaparral Mountain. 457 Comment
  CAS-BOT-BC127285  Agrostis exarata William Arents Silveus 1938-7-10 2969 Humboldt Eureka. Comment
  UC1103386  Agrostis exarata Joseph P. Tracy 1934-7-21 13478 Humboldt near Samoa; Northern Coast Region, Humboldt Bay 6 Comment
  UC1145062  Agrostis exarata Joseph P. Tracy 1936-6-10 14917 Humboldt Willow Creek Trinity River Valley 152 Comment
  UCD52096  Agrostis exarata P. B. Kennedy 1928-7-16 s.n. Humboldt Sea Cliffe, near Trinidad. Comment
  UCD52411  Agrostis exarata Harley P. Chandler 1901-6-1 1512 Humboldt Klamath River. 426 Comment
  UC188851  Agrostis hallii Joseph Burtt Davy 1899-6-16 5564 Humboldt Alton Comment
  RSA10019  Agrostis idahoensis Joseph P. Tracy 1932-7-16 10608 Humboldt Klamath Mtns., Trinity Summit, Corral Prairie 1524 Comment
  UC526877  Agrostis oregonensis Joseph P. Tracy 1930-7-23 9129 Humboldt along streamlet Northern Coast Ranges, Horse Mountain 1524 Comment
  RSA10063  Agrostis pallens Joseph P. Tracy 1932-7-17 10661 Humboldt Trinity summit. Corral Prairie 1524 Comment
  UC526883  Agrostis pallens Joseph P. Tracy 1932-7-17 10661 Humboldt Corral Prairie Klamath Mountains, Trinity Summit 1524 Comment
  CAS-BOT-BC138630  Agrostis stolonifera David D. Keck 1938-8-5 4771 Humboldt Big Lagoon. Comment
  CHSC36406  Agrostis stolonifera Donald M. Burk 1981-7-25 54 Humboldt At junction of Rd. 5N10 and Rd. 5N10C. 1249 Comment
  UCD53503  Agrostis stolonifera Malcolm A. Nobs; S. Galen Smith 1949-8-3 1168 Humboldt 1 mile south of Fields Landing, Eel River Valley. Comment
  UCD56339  Agrostis stolonifera A. H. Murphy 1947-7-30 s.n. Humboldt 1.2 mile west of Hydesville, along the Rohnerville Road. Comment
  BLMAR32  Aira caryophyllea Brad Barr June, 1982 32 Humboldt King range, Lake Ridge near pond Comment
  HSC8862  Aira caryophyllea C. R. Ball, H. E. Parks, J. P. Tracy 1932-5-17 1341 Humboldt Trinity River, near bridge on Trinity Highway 152 Comment
  UC1541534  Aira caryophyllea Harold E. Parks May 1934 4946 Humboldt Spruce Cove Trinidad 91 Comment
  CAS-BOT-BC138334  Aira caryophyllea var. caryophyllea David D. Keck 1948-7-1 5972 Humboldt South side of Big Lagoon. Comment
  CAS-BOT-BC138338  Aira caryophyllea var. caryophyllea Doris K. Kildale 1926-5-2 1890 Humboldt Willow Creek Flat. Trinity River Valley. 152 Comment
  HSC32884  Allium bolanderi var. bolanderi Thomas W. Nelson, James Nelson 1973-5-28 936 Humboldt McKeown Ranch N of Dinsmore Comment
  HSC32893  Allium hoffmanii Thomas W. Nelson 1973-5-30 977 Humboldt Humboldt/Trinity Co. line, Mt. Lassic 1790 Comment
  HSC67187  Allium hoffmanii Thomas W. Nelson, James Nelson 1980-6-10 5423 Humboldt Along NE side of Red Mtn. 1433 Comment
  HSC67367  Allium hoffmanii Thomas W. Nelson, James Nelson 1980-6-10 5411 Humboldt Along Swayback Ridge Rd., 2.5 mi. N of junction with FS Rd. 1S07 1463 Comment
  BLMAR219  Allotropa virgata Jeanne McFarland July, 1996 219 Humboldt Red Mountain, growing in Tan oak understory 548 Comment
  CAS-BOT-BC171313  Alnus incana subsp. tenuifolia Joseph P. Tracy 1927-8-22 8335 Humboldt Bald Mountain; In cold wet meadow near High Prairie 1066 Comment
  HSC73724  Alnus incana subsp. tenuifolia M. A. Baker 1980-7-19 3040 Humboldt Near Bret Hole. 1814 Comment
  RSA174010  Alnus rhombifolia R. F. Thorne 1957-9-2 18991 Humboldt Eel River. Burlington State Park, just S of Weott. Comment
  CAS-BOT-BC169533  Alnus rubra Doris K. Kildale 1926-6-28 2181 Humboldt Big Lagoon Comment
  RSA173960  Alnus rubra R. F. Thorne 1957-9-3 19019 Humboldt Patrick s Point State Park. Comment
  RSA2929  Alnus rubra C. B. Wolf 1931-8-28 2366 Humboldt Redwood Highway 4.5 miles no. of Fortuna on road to Eureka. 15 Comment
  SBBG89139  Alnus rubra A. Keedy 1988-9-28 15 Humboldt Alder Grove Rd near Hwy 299, N of Arcata Comment
  UC275559  Alnus rubra Joseph P. Tracy 1923-2-25 6150 Humboldt near Carlotta; Northern Coast Ranges, Van Duzen River 30 Comment
  UC630536  Alnus rubra H. E. and S. T. Parks 1938-4-1 24126 Humboldt Spruce Cove Trinidad 60 Comment
  UC72510  Alnus rubra H. P. Chandler 1905-5-1 Humboldt Eureka Comment
  RSA44474  Alopecurus aequalis Henry M. Pollard 1948-7-26 s.n. Humboldt Near mouth of Camp Creek near Orleans. Comment
  CAS-BOT-BC138146  Alopecurus aequalis var. aequalis Volney Rattan 1903-1-1 s.n. Humboldt Mad River. Comment
  UC1103312  Alopecurus geniculatus Joseph P. Tracy 1933-7-20 12802 Humboldt Arcata <Bottom> North Coast Ranges, Arcata <Bottom> 15 Comment
  UCD55901  Alopecurus geniculatus Malcolm A. Nobs; S. Galen Smith 1949-8-3 1164 Humboldt 1 mile south of Fields Landing, Eel River Valley, Marsh Plant Survey of California. Comment
  SEINET11674220  Alopecurus geniculatus J. P. Tracy 1951-1 19524 Humboldt back of Everett Beck house (formerly George Fray) bed of former Goose Lake, Hydesville Comment
  UC1116222  Alopecurus saccatus Joseph P. Tracy 1942-6-2 17096 Humboldt Alton 30 Comment
  UC1199258  Ambrosia artemisiifolia Joseph P. Tracy 1936-9-18 15187 Humboldt at Willow Creek; Trinity River Valley 152 Comment
  CAS-BOT-BC13700  Ambrosia chamissonis W. S. Cooper 1925-7-28 102 Humboldt Cape Mendocino Comment
  HSC5661  Ambrosia chamissonis J. W. Johnson 1961-8-17 1022 Humboldt Arcata, W.M. Lanphere Farm, Samoa Peninsula. Comment
  JEPS40955  Ambrosia chamissonis Joseph P. Tracy 1934-10-21 13687 Humboldt along coast in front of s end of Stone Lagoon; Dry Lagoon 3 Comment
  SEINET7014139  Ambrosia chamissonis R. Mastrogiuseppe, J. Mastrogiuseppe 1983-7-16 3491 Humboldt Dunes near Dry Lagoon. Comment
  CAS-BOT-BC142889  Amelanchier alnifolia var. semiintegrifolia Carl B. Wolf 1927-8-28 1178 Humboldt At summit of Lord Ellis Road to Blue Lake, junction of Horse Mt. Road Comment
  HSC18526  Amelanchier alnifolia var. semiintegrifolia J. Sandborg, F. Sandborg 1968-7-19 60 Humboldt Bluff Creek near Notice Creek 793 Comment
Read comments
Nov 12 2013
  HSC98537  Amelanchier alnifolia var. semiintegrifolia Cara Witte 2008-6-11 709 Humboldt Forest Service Road 5N10. At intersection of Forest Service Road 5N41. 1294 Comment
  UCR45376  Amelanchier alnifolia var. semiintegrifolia Thomas W. Nelson, Jane P. Nelson 1977-5-30 3419 Humboldt Beside State Route 36 just west of Dinsmore at Hwy bridge over Van Duzen River 732 Comment
  RSA296725  Ammophila arenaria J. P. Smith, Thomas W. Nelson 1977-6-30 9201 Humboldt Samoa Peninsula just east of the drag strip. Comment
  UC199415  Amsinckia P. E. Goddard 1907-6-5 F 117 Humboldt Van Duysen Comment
  UC594248  Amsinckia intermedia S. K. Harris, J. P. Tracy and H. S. Yates 1936-6-17 3429 Humboldt nw slopes of Buck Mountain 822 Comment
  HSC17828  Anagallis arvensis Paul Shields 1955-6-16 Humboldt HSC Campus Comment
  HSC17825  Anagallis arvensis Francis Winter 1960-4-24 Humboldt 1 mi. N of Redwood Creek Ranch 396 Comment
  HSC57007  Anaphalis margaritacea Overton, Butler 1979-7-24 9594 Humboldt Near Titlow Hill, close to the town of Willow Creek 1250 Comment
  HSC91928  Anaphalis margaritacea E. Mackey 1986-7-21 Humboldt Patricks Point State Park; Palmer's Point Comment
  HSC37663  Anaphalis margaritacea R. Sutherland 1976-8-18 14 .18876 Humboldt 195 Comment
  HSC18009  Anemone deltoidea H. E. Parks, S. T. Parks May 1930 748 Humboldt Along Van Duzen River Comment
  CHSC110736  Anemone grayi Dean Wm. Taylor 2011-5-4 21116 Humboldt Vicinity of Dinsmore; Forest Road 1N30 (Bick Mountain Road) about 0.5 miles SE from junction with Highway 36 737 Comment
  CAS-BOT-BC391870  Anemone grayi Doris K. Kildale 1928-5-1 5984 Humboldt MacLellan Mountain 914 Comment
  HSC56311  Angelica arguta Overton, Butler 1979-8-2 12641 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  JEPS16074  Angelica genuflexa W. L. Jepson 1936-8-17 17910 Humboldt Fields Landing, Stills Ranch Fields Landing; , Stills Ranch Comment
  UC1197377  Angelica hendersonii Joseph P. Tracy 1924-9-28 6909 Humboldt Northern Coast Ranges, Centerville Centerville; Northern Coast Ranges, Centerville 6 Comment
  UC562549  Angelica hendersonii Joseph P. Tracy 1930-7-21 8896 Humboldt Cape Mendocino, south of point of the Cape Cape Mendocino 3 Comment
  UC582634  Angelica hendersonii Joseph P. Tracy 1937-8-22 15674 Humboldt Table Bluff 91 Comment
  UC642237  Angelica hendersonii Joseph P. Tracy 1938-8-28 16133 Humboldt Trinidad 3 Comment
  UC642307  Angelica hendersonii Joseph P. Tracy 1938-8-28 16134 Humboldt Trinidad 3 Comment
  JEPS14245  Angelica lucida Joseph P. Tracy 1938-7-15 16078 Humboldt Mouth of Eel River Eel River 6 Comment
  RSA246794  Angelica lucida R. F. Thorne, P. Everett 1965-8-9 35337 Humboldt Along Hwy 101 about 3 miles N of Eureka; 2 Comment
  HSC70546  Angelica tomentosa M. A. Baker 1980-7-19 3025 Humboldt Near Bret Hole. 1814 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
  SD58268  Angelica tomentosa var. hendersonii W. L. Jepson 1936-8-18 17945 Humboldt 1/2 mile south of Singley Creek, Sand dune by the sea Comment
  CAS-BOT-BC271493  Anisocarpus madioides Doris K. Kildale; L. B. Kildale 1930-5-24 9552 Humboldt Hoopa Valley 152 Comment
  HSC5993  Anisocarpus madioides Francis Winter 1960-4-24 Humboldt 1 mi. W of Hoopa on Bair Rd. 305 Comment
  HSC58749  Antennaria argentea Overton, Butler 1979-7-24 9595 Humboldt Near Titlow Hill, close to the town of Willow Creek 1250 Comment
  CAS-BOT-BC77290  Antennaria microphylla Joseph P. Tracy 1935-7-24 14169 Humboldt Trinity Summit, near ranger station 1828 Comment
  HSC96072  Antennaria suffrutescens J. McIntire, S. Lyon 2005-6-24 15 Humboldt Forest Service Rd. 6N36, 3/4 mile N of junction with Forest Service Rd. NF1; Radio Tower Comment
  SEINET2031154 Image available Anthemis cotula J. P. Tracy 1909-7-4 3011 Humboldt Immediate vicinity of Eureka Comment
  HSC103785  Anthemis cotula M. Mesler, K. A. Wayman 2015-8-4 1646 Humboldt Trail between Mill Creek Lakes trail head and Andy's Camp 1633 Comment
  SEINET271527  Anthoxanthum occidentale Bassett Maguire, Ruth Maguire; CB Maguire 1934-6-8 15071 Humboldt Bolling Grove State Park ; unspecified Comment
  SEINET11682983  Anthoxanthum occidentale K. S. Erdman 1970-1 4790 Humboldt Redwood National Park, 0.5 mi inside Holter Ridge entrance along Bald Hills Road SE of Orick Comment
  HSC8945  Anthoxanthum odoratum E. W. Styskel 1964-4-28 73 Humboldt End of Davis Sreet, at edge of Eel River in Rio Dell Comment
  UC1198742  Aphanes occidentalis Joseph P. Tracy 1919-5-31 5767 Humboldt Northern Coast Ranges. Along Willow Creek (Tributary of Trinity River) Near its mouth 152 Comment
  HSC77514  Aphanes occidentalis K. Berg 1984-4-8 525 Humboldt South spit of Humboldt Bay, 1.4 mi. S of South Jetty, E of road Comment
  SEINET14183378  Aphanes occidentalis Unknown 1918-5-1 4903 Humboldt Plants of Northern Coast Ranges of Califonia warm place by roadside towards McBrides KNEELAND PRAIRIE, HUMBOLDT COUNTY Altitude 2500 ft. Comment
  HSC44448  Aquilegia formosa Brad Klipfel 1975-5-30 657 Humboldt N of Horse Mtn. Comment
  HSC99426  Aquilegia formosa K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-7 75 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  HSC56326  Aquilegia formosa var. truncata Overton, Butler 1979-8-2 12669 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  HSC73533  Arabis glabra Gail Newton 1980-7-14 1464 Humboldt Near Last Chance Ridge 1219 Comment
  HSC75478  Arabis sparsiflora var. subvillosa J. O. Sawyer 1980-7-18 3625 Humboldt North Trinity Mountain Research Natural Area, north of Mill Creek Lake to Red Cap Hole. Comment
  HSC31496  Arbutus menziesii Steve Selva, Roger Jensen 1974-8-27 87 Humboldt Hwy 299 ca. 1.0 mi. E of Blue Lake Comment
  HSC41316  Arbutus menziesii Brad Klipfel 1974-9-2 536 Humboldt Horse Mtn. Comment
  HSC7601  Arbutus menziesii L. D. Napier 1962-5-20 19 Humboldt 10 mi. SE of Arcata on Fickle Hill. 534 Comment
  UCD117472  Arbutus menziesii Linda M. Barker 1976-4-30 1405 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  RSA0065452  Arbutus menziesii Nancy Ryan Zabriskie, Walter Zabriskie 1969-8-26 233 Humboldt South Fork of the Eel River below Piercy. Comment
  UC1198123  Arceuthobium campylopodum Joseph P. Tracy 1935-7-22 14127 Humboldt Corral Prairie Trinity Summit 1584 Comment
  UC585944  Arctostaphylos Joseph P. Tracy 1934-3-11 13158 Humboldt French Camp Ridge 1066 Comment
  UC585953  Arctostaphylos Joseph P. Tracy 1932-7-18 10722 Humboldt head of Brett Hole Trinity Summit 1828 Comment
  UC153958  Arctostaphylos X media J. P. Tracy 1901-4-21 1035 Humboldt Immediate vicinity of Eureka 0 Comment
  HSC98662  Arctostaphylos canescens subsp. canescens C. Witte 2007-5-17 28 Humboldt Horse Mountain Botanical Area. Forest Service Road 6N18. Near utility towers. 1483 Comment
  CAS-BOT-BC23765  Arctostaphylos columbiana Joseph P. Tracy 1947-5-24 17693 Humboldt Big Lagoon, Devil's Canyon 152 Comment
  HSC101666  Arctostaphylos columbiana J. P. Smith, J. O. Sawyer 2011-4-23 13127 Humboldt Kings Peak Road, 3.2 miles from its junction with Shelter Cove Rd Comment
  HSC7623  Arctostaphylos columbiana R. Spellenberg, D. Sutherland, A. Sylvester 1966-3-28 1381 Humboldt Lord Ellis Summit on Hwy. 299, about 7 mi. W of Redwood Creek Comment
  JEPS38611  Arctostaphylos columbiana W. L. Jepson 1921-8-11 9410 Humboldt Big Lagoon 15 Comment
  JEPS38965  Arctostaphylos columbiana Joseph P. Tracy 1934-2-22 13141 Humboldt vicinity of Trinidad Northern Coast Region 60 Comment
  SBBG83934  Arctostaphylos columbiana R. Gankin, W. R. Hildreth 1967-10-26 1168 Humboldt 20 rd mi E of US Hwy 101 on Bald Hills Rd (from Orick) Comment
  UC876392  Arctostaphylos columbiana J. E. Adams 1935-5-12 1047 Humboldt Patrick's Point Comment
  UCD50770  Arctostaphylos columbiana H. E. Parks 1931-3-25 0917 Humboldt Near Patrick's point. Comment
  POM209635  Arctostaphylos columbiana var. columbiana H. E. Parks 1931-3-25 0917 Humboldt Near Patrick's point. Comment
  HSC100252  Arctostaphylos densiflora J. P. Smith, & J. O. Sawyer 2010-5-2 12809 Humboldt Along Hwy. 96, N of Orleans 140 Comment
  UC585935  Arctostaphylos glandulosa subsp. glandulosa Joseph P. Tracy 1934-7-9 13332 Humboldt ridge 5 mi s Harris (on the road towards Bell Springs); North Coast Regions 762 Comment
  UCD51746  Arctostaphylos hookeri subsp. montana Joseph P. Tracy 1947-7-5 17787 Humboldt Trinity Summit; ridge top one mile west of Mud Springs. 1158 Comment
  RSA633017  Arctostaphylos manzanita Jon E. Keeley 1996-10-13 27811 Humboldt Salyer Rest Area, east of Salyer, east of Willow Creek on Highway 299. 200 Comment
  RSA47101  Arctostaphylos manzanita subsp. elegans Doris K. Kildale 1926-4-6 1718 Humboldt Dobbyns Creek along road from mail box to Log Cabin Ranch Comment
  CAS-BOT-BC24363  Arctostaphylos manzanita subsp. manzanita R. N. Raynor 1935-3-1 s.n. Humboldt Fort Seward. Comment
  CAS-BOT-BC38837  Arctostaphylos manzanita subsp. manzanita C. Hart Merriam 1920-9-14 s.n. Humboldt Mts. near Willow Creek (1st ridge west of Trinity River on Willow Creek Road) Comment
  CAS-BOT-BC38838  Arctostaphylos manzanita subsp. manzanita C. Hart Merriam 1920-9-14 s.n. Humboldt Mts. near Willow Creek (1st ridge west of Trinity River on Willow Creek Road) Comment
  CAS-BOT-BC38840  Arctostaphylos manzanita subsp. manzanita C. Hart Merriam 1921-9-26 s.n. Humboldt Klamath River at Orleans Comment
  JEPS38924  Arctostaphylos manzanita subsp. manzanita Joseph P. Tracy 1937-4-3 15247 Humboldt Willow Creek Trinity River Valley 152 Comment
  HSC7779  Arctostaphylos nevadensis D. E. Anderson 1965-6-1 3759 Humboldt Horse Mountain, S facing slope 1220 Comment
  SEINET11988226  Arctostaphylos nevadensis subsp. knightii W. Knight, Knight, I. 1981-1 4325 Humboldt Tildel Regional Park Botanic Garden, Berkeley, orig. from French Camp Comment
  CAS-BOT-BC46634  Arctostaphylos patula Henry M. Pollard 1946-8-28 s.n. Humboldt Orleans Mt., near summit. 1828 Comment
  CAS-BOT-BC43980  Arctostaphylos uva-ursi Jacob Sigg; Elizabeth McClintock; Walter Knight; Irja Knight 1981-2-25 4071 Humboldt Humboldt County 21 Comment
  RSA381131  Arctostaphylos uva-ursi Roman Gankin, W. Richard Hildreth 1967-10-24 1148 Humboldt 1.7 miles S. of Samoa, on the Humboldt Peninsula. Comment
  RSA337436  Arctostaphylos uva-ursi var. coactilis R. F. Thorne, Percy C. Everett, K. Thorne 1965-8-5 35148 Humboldt Samoa Dunes. 3 Comment
  HSC63207  Arctostaphylos viscida M. A. Baker 1979-7-6 1009 Humboldt .6 k W of FS rd. 15N01 on rd. 12N16, toward Bald Mtn. Comment
  CAS-BOT-BC48259  Arctostaphylos viscida subsp. viscida Joseph P. Tracy 1939-4-29 16265 Humboldt Orleans 121 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
  HSC16897  Armeria maritima subsp. californica J. R. Kahl 1962-5-13 33 Humboldt 2 mi. S of Trinidad along old Hwy. 101, 50 yds. from ocean Comment
  HSC33756  Armeria maritima subsp. californica A. Montalvo 1975-5-24 268 Humboldt Samoa Dunes off Samoa Blvd., across from the boat landing Comment
  SEINET7253518 Image available Armeria maritima subsp. californica Joseph P. Tracy 1927-1 8115 Humboldt Trinidad 3 Comment
  HSC22847  Arnica cernua D. E. Anderson, J. O. Sawyer, J. P. Smith 1970-5-10 5052 Humboldt ca. 6 miles W of Hoopa, along road from Redwood Creek to Hoopa Comment
  HSC46207  Arnica cernua Thomas W. Nelson 1977-6-15 3435 Humboldt Horse Mtn.; along USFS Rd. 5N10 about 100 m south of junction with USFS Rd. 6N01 Comment
  UC668211  Arnica cernua Joseph P. Tracy 1938-6-13 15902 Humboldt Horse Mountain 1432 Comment
  UC176419  Arnica cordifolia Joseph P. Tracy 1913-6-17 4177 Humboldt at summit Buck Mountain; Northern Coast Ranges, Buck Mountain 1676 Comment
  HSC58540  Arnica discoidea Overton, Butler 1979-7-23 9505 Humboldt Near Titlow Hill, close to the town of Willow Creek. 1280 Comment
  HSC72680  Arnica discoidea J. P. Smith 1977-7-3 9244 Humboldt Road to Onion Mtn., 1/4 mile from its junction with USFS Rd. 10N41 762 Comment
  UC1199250  Arnica discoidea Joseph P. Tracy 1919-5-31 5170 Humboldt near, at w side of Trinity River Willow Creek; Trinity River 182 Comment
  SEINET10475267  Arnica discoidea var. alata Mary Susan Taylor 1980-6-11 Taylor 2842 Humboldt Gray Falls Campground, Six Rivers Natl Forest, on W side of Rd 6N56 to foot bridge, on N side of Hwy 299, ca. 2 mi NW of Burnt Ranch. 274 Comment
  UCD56029  Arrhenatherum elatius Joseph P. Tracy 1950-6-15 18781 Humboldt 5 miles north of Harris. Near top of Mail Ridge. 1066 Comment
  HSC58169  Artemisia douglasiana G. L. Clifton, Griswold 1979-8-2 12240 Humboldt Near Oregon Creek, close to the town of Hoopa 1663 Comment
  RSA34239  Artemisia suksdorfii C. B. Wolf 1927-8-29 1220 Humboldt Devils' Gate, S of Cape Mendocino Comment
  HSC44258  Asarum caudatum J. Walker 1977-4-23 13 Humboldt 2.5 mi. S of Shelter Cove Rd., S Fork of Bear Creek at Wailaki Campground 561 Comment
  CAS-BOT-BC400540  Asarum caudatum C. C. Harris; S. K. Harris 1936-6-14 652 Humboldt On Yager Road from Carlotta 457 Comment
  HSC3267  Asarum caudatum P. Markle 1962-3-27 2 Humboldt On hillside near E bank of HSC Reservoir 30 Comment
  POM92404  Asarum caudatum L. R. Abrams 1922-6-25 s.n. Humboldt North of Mad River near Arcata Comment
  RSA261553  Asarum caudatum Suzanne May 1967-4-15 21 Humboldt On Kneeland Road, 5 miles east of Bridgeville 244 Comment
  RSA96571  Asarum caudatum E. K. Balls 1954-5-31 19496 Humboldt 4 mi. ne of Strongs Station, Van Duzen river, on Yager Road Comment
  CHSC97953  Asarum hartwegii D. E. Anderson 1965-5-1 3566 Humboldt Along Hw. 96, 1.9 mi. no. of Willow Creek. Comment
  HSC102613  Aspidotis densa M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-28 1600 Humboldt Slopes above Bret Hole and below trail 6E18, 1.5 km SSW of Trinity Summit. 1778 Comment
  HSC54555  Aspidotis densa Overton, Butler 1979-7-24 9561 Humboldt Near Titlow Hill, close to the town of Willow Creek 1097 Comment
  HSC55067  Aspidotis densa G. L. Clifton, Griswold 1979-7-31 11647 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1719 Comment
  UC211498  Aspidotis densa Chesnut and Drew 1888-7-9 Humboldt Kneeland Prairie Comment
  RSA47181  Aster radulinus Doris K. Kildale 1925-8-21 1312 Humboldt Yager Comment
  CAS-BOT-BC200854  Astragalus umbraticus D. E. Anderson 1965-5-15 3694 Humboldt About 7 miles north of Hoopa on Bloody Camp Prairie road Comment
  SEINET948795  Astragalus umbraticus Joseph P. Tracy 1940-1 16706 Humboldt Bald Mountains; at Lake Prairie 1067 Comment
  UCD66898  Asyneuma prenanthoides Esther Perry 1930-7-11 Humboldt Humboldt State Park. Comment
  POM281070  Athyrium filix-femina subsp. cyclosorum Lyman Benson 1928-7-12 492 Humboldt Weott Ranger Station; Mt. Range: Seaward N Coast; Watershed: S Fork Eel River. 76 Comment
Read comments
Oct 12 2010
  RSA23653  Athyrium filix-femina subsp. cyclosorum C. B. Wolf 1939-7-6 9516 Humboldt Along Larabee Creek, 6 7/10 miles below Blocksberg on road to Bridgeville. 305 Comment
  HSC55184  Athyrium filix-femina var. cyclosorum G. L. Clifton, Terry Griswold 1979-8-2 12228 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  JEPS35158  Athyrium filix-femina var. cyclosorum Milo S. Baker 1923-7-23 123 Humboldt near Ferndale Comment
  HSC23467  Atriplex prostrata Wilbur Peterson 1971-11-1 407 Humboldt Salt Marsh of Humboldt Bay neat Jct. of G St. and Hwy. 101 in Arcata. Comment
  HSC90252  Atriplex prostrata Jean Hanson 1980-8-28 111 Humboldt Indian (Gunther) Island, Humboldt Bay, city of Eureka, across from Coast Guard Station and within 30 ft. of hi tide line and within 1 ft. of water inland. Comment
  UC34069  Avena fatua J. P. Tracy 1901-6-23 1177 Humboldt Immediate vicinity of Eureka 0 Comment
  CAS-BOT-BC98768  Baccharis douglasii L. R. Abrams 1916-7-18 6111 Humboldt Arcata to Trinidad, 18 mi. along the coast Comment
  RSA14722  Baccharis pilularis C. B. Wolf 1927-8-29 1219 Humboldt Devils' Gate, S of Cape Mendocino Comment
  UC673089  Baccharis pilularis Joseph P. Tracy 1940-10-17 16771 Humboldt Camp Grant, 2-5 mi e of South Fork of Eel River Eel River 45 Comment
  HSC100425  Baccharis pilularis Carl C. Marshall Feb 1887 391 Humboldt Hillsides near the coast. Comment
  HSC91925  Baccharis pilularis subsp. consanguinea E. Mackey 1986-10-7 Humboldt Patrick's Point State Park; near cliff edge at Palmer's Point Comment
  HSC100426  Baeria chrysostoma Carl C. Marshall Jun 1885 31 Humboldt Bear River. Comment
  UC582639  Balsamorhiza deltoidea Joseph P. Tracy 1932-6-14 10143 Humboldt west of mouth of South Fork of Trinity River South Fork of Trinity River 609 Comment
  HSC89512  Barbarea verna M. Roantree 1985-4-25 8 Humboldt E side of Trinidad Head. Comment
  HSC26814  Barbarea verna Thomas W. Nelson 1971-3-30 364 Humboldt Beside Grizzley Bluff Rd. near Ferndale Comment
  HSC28223  Barbarea verna Thomas W. Nelson 1973-4-25 798 Humboldt Beside Hwy. 101 at the Bayside turnoff Comment
  JEPS25618  Bellis perennis Rimo Bacigalupi 1959-7-7 7251 Humboldt immediately behind bluff headland of Cape Mendocino Cape Mendocino 30 Comment
  UC165030  Bellis perennis J. P. Tracy 1901-6-10 1127 Humboldt about Eureka 0 Comment
  UC1046538  Bensoniella oregona R. Bacigalupi, L. Constance, J. P. Tracy, R. Moran, R. L. Rodriguez, and S. Carlquist 1951-6-14 3416 Humboldt Snow Camp Bald Mountain Ridge (ridge between Mad River and Redwood Creek, Bald Mountain Ridge); Bald Mountain ridge, btw Mad River and Redwood Creek 1432 Comment
  RSA46859  Berberis aquifolium Doris K. Kildale 1926-6-27 s.n. Humboldt Little Van Duyen River on bridge on Bridgeville Red Bluff road. 640 Comment
  UC1198389  Berberis aquifolium var. repens Joseph P. Tracy 1947-7-5 17789 Humboldt ridge top 1 mi w Mud Springs (Trinity Summit) 1158 Comment
  HSC81928  Berberis nervosa Thomas W. Nelson, Jane Nelson 1979-7-3 4951 Humboldt Along road to Joe Losey property at junction of Kneeland and Maple Creek Rds. 610 Comment
  OBI30306  Berberis nervosa Wallace Weber, John C. Cooke, D. J. Pinkava, & David J. Keil 1969-8-19 2214 Humboldt 24.9 mi W of Humboldt county line on rte 299 Comment
  CAS-BOT-BC75686  Berberis nervosa Volney Rattan 1879-1-1 s.n. Humboldt Phelps. Comment
  CAS-BOT-BC75801  Berberis pinnata Doris K. Kildale 1928-4-29 5971 Humboldt Horse Mountain. Comment
  CAS-BOT-BC75806  Berberis pinnata Doris K. Kildale; L. B. Kildale 1930-5-11 9540 Humboldt The Bald Hills near Tomlinson's. 792 Comment
  BLMAR413  Bidens cernua Clara Sander 2007-8-22 413 Humboldt South Spit, east side of road near "lone tree" 9 Comment
  JEPS35166  Blechnum spicant Milo S. Baker 1923-7-19 83 Humboldt canyon near Wilder's; Mattole River region, sw Humboldt Co. Comment
  UCSB30622  Blechnum spicant Edwards, David 1974-9-2 Humboldt South side of dirt road in "Arcata Community Forest" ca. 0.5 miles from junction with Fickle Hill Rd., ca. 0.25 miles E of junction of Park Ave. and Fickle Hill Rd., Arcata. 97 Comment
  SFV12198  Blennosperma nanum R. Gankin, W. R. Hildreth 1966-3-15 700 Humboldt Serpentine slopes of Klamath River Canyon. State Highway 96, 4.6 miles north of Hoopa. Comment
  UC1198303  Boechera platysperma Joseph P. Tracy 1935-6-28 14325 1/2 Humboldt Head of Devils Hole Trinity Summit 1828 Comment
  POM256476  Boisduvalia densiflora Joseph P. Tracy 1938-7-5 16003 Humboldt Carlotta, open flat by old Strong s District School House, 5 miles east of town. 46 Comment
  SEINET12188876  Boisduvalia densiflora J. P. Tracy 1950-1 18843 Humboldt Cape Mendocino, S of point of the Cape, Davis Creek 30 Comment
  UC585961  Boschniakia strobilacea Joseph P. Tracy 1925-6-7 7059 Humboldt Northern Coast Ranges, Willow Creek Canyon. 609 Comment
  UC123067  Botrychium multifidum Mrs. R. M. Austin 1894-1 Humboldt Ferndale Comment
  CAS-BOT-BC420269  Boykinia occidentalis Harley P. Chandler 1901-6-1 1501 Humboldt Klamath River 426 Comment
  HSC45727  Boykinia occidentalis Patricia Shesgreen 1978-7-30 118 Humboldt Sea Lion Gulch, 50 yards from ocean along stream bank Comment
  HSC96467  Boykinia occidentalis Gordon Leppig 1997-6-19 464 Humboldt Big Lagoon County Park, Big Lagoon Bog 3 Comment
  POM274466  Boykinia occidentalis Lyman Benson 1928-7-12 388 Humboldt Weott Ranger Station. Seaward N Coast mtn range. S Fork Eel River. 61 Comment
  RSA245258  Boykinia occidentalis Norman Dennis 1965-6-3 145 Humboldt Big Lagoon County Park SW corner of Big Lagoon. Comment
  UC667115  Boykinia occidentalis Joseph P. Tracy 1934-7-22 13484 Humboldt at crossing of the Bridgeville-Kneeland Road North Yager Creek 396 Comment
  HSC79522  Brassica rapa Kenneth Clark 1980-3-1 515 Humboldt Lower alluvial terrace, Dead Man's Gulch 15 Comment
  HSC89443  Brassica rapa P. A. Daly 1986-2-23 50 Humboldt Along trails at Trinidad Head 6 Comment
  CAS-BOT-BC106286  Brickellia californica L. R. Abrams 1927-8-27 12049 Humboldt Rocky river bottom, Eel River, Richardson Grove Comment
  CAS-BOT-BC106294  Brickellia californica S. K. Harris; Mrs. C. M. Wilder 1938-9-8 877 Humboldt Bars on Van Duzen River, below Blue Slide Comment
  CAS-BOT-BC106298  Brickellia californica Frank W. Peirson 1926-7-13 7048 Humboldt Mad River, vicinity of Blue Lake Comment
  POM289092  Brickellia californica Lyman Benson 1928-7-11 456 Humboldt Weott Ranger Station, Mt. Range: Seaward N Coast; Drainage Area: S Fork Eel River. 61 Comment
  RSA94123  Brickellia californica F. W. Peirson 1926-7-13 7048 Humboldt Mad River, vicinity of Blue Lake. Comment
  CDA1775  Briza maxima T. C. Fuller 1966-5-24 14710 Humboldt 2 miles north of Trinidad. 0 Comment
  UC526899  Briza maxima Joseph P. Tracy 1930-7-6 8848 Humboldt Iaqua North Coast Ranges 762 Comment
  UCR274950  Briza maxima Charity A. Hartshorn 2016-4-24 25 Humboldt Arcata Marsh & Wildlife Sanctuary, east end of Klopp Lake 7 Comment
  SEINET9806296 Image available Briza maxima Unknown 2007-6-19 Humboldt Arcata, CA Comment
  HSC84929  Briza minor R. N. Raynor 1935-6-7 Humboldt Ft. Seward Comment
  SEINET4183122 Image available Briza minor Bassett Maguire, Ruth Maguire, C. B. Maguire 1934-6-8 15063 Humboldt Meadow, Coolidge, Redwood Park. Comment
  UC34059  Briza minor J. P. Tracy 1900-6-5 835 Humboldt Immediate vicinity of Eureka 0 Comment
  HSC38619  Brodiaea elegans subsp. elegans D. E. Anderson, J. P. Smith 1971-6-21 1107 Humboldt 16.2 miles E of Garberville on road to Alderpoint. Comment
  HSC56466  Brodiaea elegans subsp. elegans Griswold, Butler 1979-7-12 7273 Humboldt Near Cedar Creek, close to the town of Willow Creek 1158 Comment
  HSC35610  Brodiaea elegans subsp. elegans Thomas W. Nelson, Jane P. Nelson, James Nelson 1975-7-15 2022 Humboldt Beside Bald Hills Rd. 1 mi. E of Redwood National Park Comment
  SEINET10833761  Brodiaea ida-maia Lyman D. Benson 1930-7-18 Benson 2188 Humboldt West of Willow Creek. Mt. Range, Seaward N coast. River West of Trinity 1500 feet. Slope south Barren hillsides, abundant. Comment
  UC1197742  Brodiaea terrestris subsp. terrestris Joseph P. Tracy 1911-6-25 3244 Humboldt Bucksport, region about Humboldt Bay Northern Coast Region, Humboldt Bay 0 Comment
  UC1222694  Brodiaea terrestris subsp. terrestris Joseph P. Tracy 1950-6-15 18771 Humboldt between Pepperwood and Dyerville (Englewood Prairie); Englewood Comment
  CAS-BOT-BC149567  Bromus carinatus var. carinatus Joseph P. Tracy 1932-7-12 10449 Humboldt Klamath Mountains. Trinity Summit. At Corral Prairie. 1524 Comment
  UC1103279  Bromus carinatus var. carinatus Joseph P. Tracy 1942-6-2 17097 Humboldt 2 mi n of Bridgeville 609 Comment
  UC1103360  Bromus commutatus Joseph P. Tracy 12621 Humboldt 2 to 5 mi e of the South Fork (along Eel River, Camp Grant); Eel River, Camp Grant 45 Comment
  UC1145144  Bromus commutatus Joseph P. Tracy 1942-6-15 17130 Humboldt near Redcrest Resort (Englewood); Englewood 91 Comment
  UCD58449  Bromus commutatus Joseph P. Tracy 1942-6-15 17130 Humboldt Englewood. 91 Comment
  HSC103009  Bromus diandrus J. P. Smith 2014-5-20 13851 Humboldt Samoa Peninsula 6 Comment
  HSC92385  Bromus diandrus T. M. Mingo May 1965 Humboldt Edge of parking area at Luffenholtz Beach. Comment
  HSC9295  Bromus diandrus R. H. Berg 1963-5-12 72 Humboldt King Salmon, S of Eureka. Comment
  BLMAR158  Bromus hordeaceus Donald Hazlett 1994-6-7 158 Humboldt King range, near horse Mt. Ridge rd 670 Comment
  UC1103363  Bromus hordeaceus Joseph P. Tracy 1933-6-11 12556 Humboldt 4 mi s of Dyerville (South Fork Eel River); North Coast Ranges, South Fork Eel River 60 Comment
  UC1607840  Bromus hordeaceus H. E. Parks June 1935 4996 Humboldt Trinidad District, Egg Point Egg Point; Trinidad District, Egg Point Comment
  RSA44464  Bromus laevipes Henry M. Pollard 1948-7-19 s.n. Humboldt Near Van Fleet ranch Comment
  UC1131029  Bromus laevipes H. S. Yates 1936-6-17 5686 Humboldt 1 mi w of Bridgeville 182 Comment
  UC1145181  Bromus sterilis Joseph P. Tracy 1950-6-15 18776 Humboldt Mail Ridge 944 Comment
  HSC70926  Bromus tectorum R. York 1980-5-18 577 Humboldt Near Black Mountain 792 Comment
  HSC9369  Bromus tectorum C. R. Ball, H. E. Parks, J. P. Tracy 1932-5-17 1345 Humboldt Trinity River, near bridge on Trinity Highway 152 Comment
  CAS-BOT-BC185523  Bromus vulgaris W. R. Dudley 1899-6-1 s.n. Humboldt Bull Creek and Eel River. Comment
  SEINET181181 Image available Bromus vulgaris Bassett Maguire, Ruth Maguire; C. B. Maguire 1934-6-8 15067 Humboldt Bolling Grove State Park. Comment
  UCD60242  Bromus vulgaris A. H. Shunk 1923-7-12 s.n. Humboldt Briceland. Comment
  HSC40044  Cacaliopsis nardosmia Thomas W. Nelson, Jane P. Nelson 1976-7-1 2897 Humboldt Along ridge N of Bear Creek 1463 Comment
  SEINET10904236  Cakile edentula subsp. edentula Gordon 1982-9-23 GORDON UMO 176677 Humboldt Eureka quad. T6n,r1w,sec.14 & 23. Coastal dunes and strand of Lanphere-christensen dunes preserve 3 miles w of arcata Comment
  UCD114936  Cakile maritima M. Barbour 1969-9-4 s.n. Humboldt West of Table Bluff (10 miles south of Eureka). Comment
  UC526803  Calamagrostis koelerioides Joseph P. Tracy 1933-8-30 13008 Humboldt Horse Mountain Northern Coast Ranges 1371 Comment
  CAS-BOT-BC185183  Calamagrostis nutkaensis David D. Keck 1948-7-1 5976 Humboldt Northeast end of Big Lagood. Comment
  UC1103287  Calamagrostis nutkaensis Joseph P. Tracy 1918-7-21 5079 Humboldt Humboldt Hill Northern Coast Ranges, <area> around Humboldt Bay 182 Comment
  UCD57524  Calamagrostis nutkaensis Elizabeth Wilson 1940-7-12 s.n. Humboldt north of Eureka. Comment
  SEINET4565504  Calamagrostis nutkaensis W. Silveus 1938-7-9 2979 Humboldt Dyerville Comment
  UC176676  Calandrinia ciliata Joseph P. Tracy and Ernest B. Babcock 1912-5-11 3580 Humboldt near Hydesville; Northern Coast Region 30 Comment
  JEPS42834  Callitriche heterophylla var. bolanderi W. L. Jepson 1936-8-17 17921 Humboldt 2.5 mi s Fields Landing Comment
  UCD149967  Callitriche palustris William Anderson; H. Mc. 1964-8-4 s.n. Humboldt McKinleyville, Shore Ares. Comment
  CHSC110706  Callitriche stagnalis Dean Wm. Taylor 2004-6-24 19136 Humboldt Clear Lake, along Titlow Hill Road. 1493 Comment
  CAS-BOT-BC80380  Calocedrus decurrens Doris K. Kildale 1925-8-18 1252 Humboldt Trinity Summit - McKay's Cabin 1524 Comment
  HSC98720  Calocedrus decurrens Cara Witte 2008-7-11 886 Humboldt Grouse Mountain Lookout. Forest Service Road 4N70. 1641 Comment
  UC54783  Calocedrus decurrens P. E. Goddard 1901-7-10 53 Humboldt Hupa Comment
  UC1225854  Calochortus amabilis Joseph P. Tracy 1948-6-13 18050 Humboldt Harris 609 Comment
  SEINET4169782  Calochortus catalinae Unknown 1930-7-6 Humboldt Kneeland Praire 762 Comment
  SEINET12051376  Calochortus coeruleus F. H. Utech, Sato, T.; Ohara, M. 1990-1 90 -315 Humboldt Six Rivers National Forest, 0.5 mi S of CA 199 on French Hill Road (USFS Rd. 411) 150 Comment
  HSC15377  Calochortus tolmiei D. E. Anderson 1965-5-15 3559 Humboldt Along Hwy. 96, 1.9 mi. N of Willow Creek, above Trinity River Comment
  HSC15383  Calochortus tolmiei D. E. Anderson 1963-5-25 2479 Humboldt 2-3 mi. N of Capetown Comment
  HSC73066  Calochortus tolmiei M. A. Baker 1980-6-16 1946 Humboldt Near Onion Mtn. 1280 Comment
  CAS-BOT-BC494364  Calochortus tolmiei Joseph P. Tracy 1917-5-30 4813 Humboldt Sand dunes west of Dows Prairie 15 Comment
  CAS-BOT-BC494368  Calochortus tolmiei M. S. Jussel 1931-5-2 s.n. Humboldt 25 miles n. of Garberville Comment
  UC1222546  Calochortus vestae Joseph P. Tracy 1950-7-6 19004 Humboldt 2 mi s Burr Valley (on the Albee Raod) 1158 Comment
  UC1196207  Caltha biflora Joseph P. Tracy 1933-7-16 12779 Humboldt Northern Coast Ranges. At McKay Camp, South Fork Mountain. 1676 Comment
  CAS-BOT-BC175760  Caltha leptosepala Doris Kildale 1931-5-10 10578 Humboldt Snow Camp Comment
  CAS-BOT-BC273311  Calycadenia fremontii H. M. Hall 1930-10-1 12922 Humboldt Trinity River at Willow Creek Comment
  UC1196480  Calypso bulbosa Joseph P. Tracy 1911-5-7 3181 Humboldt Northern Coast Ranges, Kneeland Prairie Kneeland Prairie; Northern Coast Ranges, Kneeland Prairie 762 Comment
  HSC70954  Calypso bulbosa Thomas W. Nelson 1977-6-15 3429 Humboldt Along FS 6N01, just N of Clear Lake 1372 Comment
  SEINET12074107  Calypso bulbosa H. P. Chandler 1901-1 Humboldt Comment
  HSC44550  Calyptridium monospermum Brad Klipfel 1973-7-15 169 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC99454  Calyptridium monospermum K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-7 106 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
  HSC70959  Calyptridium monospermum Thomas W. Nelson 1977-6-15 3434 Humboldt Along FS Rd. 6N01 about 1 mi. S of junction with FS Rd. 5N10 1372 Comment
  RSA232656  Calystegia soldanella Larry E. DeBuhr, Gary D. Wallace 1972-5-23 650 Humboldt Fresh Water Lagoon, 2.5 miles south of Orick on Hwy. 101. Comment
  UCD170801  Calystegia soldanella Gordon Leppig; Sylvia Leppig and Kai Neander 1998-5-6 747 Humboldt Dry Lagoon State Park, between ocean and Dry Lagoon. 2 Comment
  UC1586964  Camassia Juha Pykala and D. H. Norris 1987-6-5 1391 Humboldt e of Maple Creek (Snow Mountain Lake); Snow Mountain Lake 1386 Comment
  UC302169  Camassia quamash Joseph P. Tracy 1925-7-5 7179 1/2 Humboldt near High Prairie (Bald Mountain); Northern Coast Ranges, Bald Mountain 1066 Comment
  HSC39613  Camassia quamash subsp. linearis Thomas W. Nelson, Jane P. Nelson 1976-6-15 2717 Humboldt Along old trail from lookout to Blocksburg 1585 Comment
  HSC74419  Camassia quamash subsp. linearis Gail Newton 1980-8-10 2041 Humboldt Near Blake Mountain. 1707 Comment
  OBI36380  Camissoniopsis cheiranthifolia David J. Keil 1983-7-1 17283 Humboldt Ca. 5 mi NW of Petrolia along mattole Rd Comment
  CAS-BOT-BC160241  Camissoniopsis cheiranthifolia subsp. cheiranthifolia J. P. Tracy 1909-7-18 3017 Humboldt Sand hills of Ocean Beach at Samoa, opp. Eureka Comment
  CAS-BOT-BC160245  Camissoniopsis cheiranthifolia subsp. cheiranthifolia D. E. Breedlove 1962-6-7 3036 Humboldt 1.5 miles south of Samoa on peninsula on western side of Humboldt Bay Comment
  SEINET10462972  Campanula prenanthoides Overton 1979-8-2 OVERTON 12621 Humboldt Near Grogan Hole, on the Salmon Mountain quad., close to the town of Hoopa 1554 Comment
  SEINET10463026  Campanula prenanthoides Ira L. Wiggins 1930-7-22 Wiggins 4690 Humboldt ALONG BANK OF REDWOOD CR BTWN BLUE LAKE & WILLOW CR Comment
  SEINET10463063  Campanula prenanthoides Van Dke 1931-6-30 VAN DYKE s.n. Humboldt WILLOW CREEK Comment
  SEINET10873252  Campanula prenanthoides Klipfel 1974-7-23 KLIPFEL 462 Humboldt Horse Mountain area, on south slope of ridge running to the east of the towers area. T6N R4E Sec. 35 Comment
  HSC58014  Campanula scouleri G. L. Clifton 1979-7-31 11815 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  HSC63287  Campanula scouleri M. A. Baker 1979-6-29 956 Humboldt Hopkin's Creek. 760 Comment
  HSC74731  Campanula scouleri Gail Newton 1981-7-24 2300 Humboldt Near Chaparral Mtn. 1433 Comment
  JEPS11743  Campanula scouleri Milo S. Baker 1923-7-20 52 Humboldt road from Redwood House to Yager 609 Comment
  SD61053  Campanula scouleri Darley F. Howe 1964-8-7 3944 Humboldt 8.2 miles from Highway 96 on Mill Creek Road; Hoopa Valley. 1064 Comment
  SEINET10905968  Campanula scouleri Wolf 1934-7-2 WOLF 5854 Humboldt 2 MI FROM BALD MT ON RD TO KORBEL SEMISHADE, COMMON 762 Comment
  SEINET201622  Campanula scouleri Joseph P. Tracy 1937-7-25 15560 Humboldt Happy Camp Mountain In Trinity Summit Range NE of Hawkins Bar. 1280 Comment
  CAS-BOT-BC37436  Cardamine californica Alice Eastwood 1907-4-22 25 Humboldt Near Trinidad. Comment
  HSC47950  Cardamine californica Brad Klipfel 1974-5-27 383 Humboldt Horse Mtn. Comment
  HSC48991  Cardamine californica M. A. Baker 1979-5-23 758 Humboldt Comment
  HSC6688  Cardamine californica D. E. Anderson 1963-3-23 2398 Humboldt Bald Mtn. Rd. Comment
  UC1199182  Cardamine californica Joseph P. Tracy 1935-3-10 13732 Humboldt Blue Slide Northern Coast Ranges, Van Duzen River (on Van Duzen River) 91 Comment
  UC160972  Cardamine californica J. P. Tracy 1911-4-2 3171 Humboldt immediate vicinity Eureka; immediate vicinity Eureka 0 Comment
  UC30033  Cardamine californica W. C. Blasdale 1896-6-9 Humboldt Fitzgeralds Comment
  SDSU2481  Cardamine californica var. californica R. M. Beauchamp 1967-2-22 194 Humboldt 122 Comment
  RSA0034557  Cardamine californica var. integrifolia H. E. Parks, Joseph P. Tracy 1931-3-26 916 Humboldt Lower Van Duzen River. 61 Comment
  CAS-BOT-BC37217  Cardamine hirsuta M. S. Jussel 1931-5-2 s.n. Humboldt 8 miles north of Garberville. Comment
  HSC43205  Cardamine oligosperma R. Sutherland 1976-8-13 29 .13876 Humboldt Mouth of Redwood Creek at S Fork of Eel River 87 Comment
  UC1199209  Cardamine oligosperma Joseph P. Tracy 1923-4-8 6179 Humboldt Carlotta Northern Coast Ranges, Carlotta 60 Comment
  CAS-BOT-BC38065  Cardamine pachystigma Tom Craig 1941-7-1 s.n. Humboldt Alder Point. Comment
  CAS-BOT-BC384761  Cardionema ramosissimum Milo S. Baker 1927-8-16 2445 b Humboldt Samoa Comment
  HSC39789  Cardionema ramosissimum Peter Sorensen 1976-6-14 Humboldt N Spit of Humboldt Bay, S of Samoa Comment
  HSC4144  Cardionema ramosissimum P. W. Shields Apr 1955 Humboldt 5 mi. NW of Arcata Comment
  CAS-BOT-BC17792  Carex amplifolia Doris Kildale 1931-6-6 10865 Humboldt Gans Prairie, Orick - Weitchpec road. Comment
  RSA34051  Carex angustata A. A. Heller 1923-7-10 s.n. Humboldt Eel River between Scotia and Pepperwood. Comment
  CAS-BOT-BC17981  Carex aquatilis Joseph Prince Tracy 1935-6-8 13948 Humboldt Dry Lagoon (along coast in front of South End of Stone Lagoon). 3 Comment
  CAS-BOT-BC19091  Carex aurea Joseph Prince Tracy; H. E. Parks 1931-5-9 9401 Humboldt Northern Coast Region. Vicinity of Trinidad. At Bishop Pine Lodge. 60 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
  CHSC47364  Carex bolanderi L. P. Janeway 1984-5-27 835 Humboldt Ca 1 mi E of Redway on Redwood Cr. 91 Comment
  HSC75763  Carex bolanderi Denis Kearns 1981-7-23 405 Humboldt Near Whiteys Peak. 1524 Comment
  UC562429  Carex bolanderi Joseph P. Tracy 1936-5-29 14823 Humboldt French Camp Ridge 1066 Comment
  SEINET10752409  Carex brainerdii Joseph P. Tracy 1935-7-30 Tracy 14350 Humboldt On ridge 2 miles SW of top Shasta Fir Zone. Comment
  POM161061  Carex concinnoides Joseph P. Tracy 1926-6-6 7567 Humboldt Hoopa Mountain. On road west from Hoopa Valley. 915 Comment
  CAS-BOT-BC34972  Carex densa Joseph Prince Tracy 1938-6-9 15876 Humboldt Dobbyn Creek. 152 Comment
  CAS-BOT-BC34981  Carex densa Joseph Prince Tracy 1927-5-30 8095 Humboldt Northern Coast Ranges.Garberville. 121 Comment
  UC50822  Carex deweyana subsp. leptopoda Joseph P. Tracy 1900-8-5 921 Humboldt in immediate vicinity of Eureka 0 Comment
  SEINET2044705 Image available Carex echinata var. ormantha Juha Pykala, D. H. Norris 1987-6-11 1611 Humboldt North Trinity Mountian Wilderness, W of Crogan Hole. 1555 Comment
  CAS-BOT-BC20012  Carex feta H. D. Ripley; R. C. Barneby 1945-6-16 6823 Humboldt NW of Harris. 883 Comment
  HSC98938  Carex fracta Cara Witte 2007-6-28 389 Humboldt Friday Ridge Road/ 6N08. 1389 Comment
  UC1152081  Carex fracta Joseph P. Tracy 1950-7-2 18963 Humboldt 6 mi NE of Hawkins Bar (Fern Spring, Happy Camp Mountain); Trinity Summit Range 1280 Comment
  RSA121755  Carex globosa H. L. Person 1932-5-11 s.n. Humboldt Near Arcata. 0 Comment
  CAS-BOT-BC20872  Carex globosa Joseph Prince Tracy 1929-6-3 8605 Humboldt North Coast Ranges. Willow Creek Canyon. Mouth of East Fork. 487 Comment
  SEINET10752907  Carex globosa Joseph P. Tracy 1932-4-23 Tracy 9832 Humboldt Englewood. 91 Comment
  HSC96578  Carex gynodynama Gordon Leppig, Todd Treadwell 2005-6-8 2249 Humboldt Blue Slide Creek watershed, Pacific Lumber Co. land. 245 Comment
  CAS-BOT-BC22315  Carex harfordii Alice Eastwood; John Thomas Howell 1937-6-23 4791 Humboldt Near Dinsmores. Comment
  HSC103083  Carex hassei Sydney Carothers 2014-6-22 25 Humboldt Six Rivers National Forest, Lassics Botanical Area. Below trail to Mount Lassic. 1707 Comment
  HSC74407  Carex hoodii Gail Newton 1980-8-10 2020 Humboldt Near Blake Mtn. 1798 Comment
  SEINET3836749 Image available Carex integra Joseph P. Tracy 1926-7-5 7723 Humboldt Near the Redwood House, on road to head of Yager Comment
  HSC48375  Carex leptopoda D. H. Norris May 1970 12457 Humboldt Top of ridge above Freshwater Lagoon Comment
  UC562437  Carex luzulina var. ablata Joseph P. Tracy 1932-7-14 10560 Humboldt Corral Prairie Trinity Summit 1584 Comment
  CAS-BOT-BC31664  Carex lyngbyei Joseph Prince Tracy 1938-7-15 16069 Humboldt In salt marsh and edges of sloughs, Mouth of Eel River. 3 Comment
  SEINET4292167 Image available Carex microptera Unknown 2003-1 7920 Humboldt High North Coast Ranges. South side (above) Road 5N04, 0.5km northeast of the top of Grouse Mountain. Comment
  CAS-BOT-BC32133  Carex multicaulis Joseph Prince Tracy 1941-4-11 16857 Humboldt Trinity River Valley at Willow Creek. 152 Comment
  SEINET7568483 Image available Carex multicostata L. P. Janeway 2003-7-30 7945 Humboldt Grouse Mountain quad. High North Coast Ranges. Edge of seedy area at upper edge of Clear Lake, 2.9 km southeast of Titlow Hill. 1494 Comment
  UC709322  Carex multicostata Joseph P. Tracy 1939-7-9 16316 Humboldt 1 mi n Murphy Meadows; Bald Mt. 914 Comment
  CHSC84707  Carex obnupta L. P. Janeway 2003-7-27 7931 Humboldt North Coast. West edge of Dry Lagoon. 4 Comment
  HSC7187  Carex obnupta D. R. Junell 1965-5-2 40 Humboldt 1 mi. S of Fairhaven on Samoa Peninsula Comment
  HSC86334  Carex obnupta Rudolf W. Becking 1988-4-9 Humboldt South Spit, opposite Fields Landing Comment
  RSA246861  Carex obnupta Robert F. Thorne, Percy C. Everett 1965-8-5 35139 Humboldt Mt. Chamisal; Below summit. 534 Comment
  UC196571  Carex obnupta Joseph P. Tracy 1916-5-31 4696 Humboldt along Eel River from South Fork to Scotia; Northern Coast Ranges, Holmes Flat 60 Comment
  CAS-BOT-BC119270  Carex ovalis Joseph Prince Tracy 1936-6-28 15014 Humboldt Bald Mt. Borders of ditch in woods near Murphy Meadow. 1066 Comment
  UC1115802  Carex ovalis Joseph P. Tracy 1939-7-9 16315 Humboldt 1 mi n Murphy Meadows (a mile or so from type locality); Bald Mt. 914 Comment
  UC562553  Carex ovalis Joseph P. Tracy 1936-6-28 15012 Humboldt near Murphy Meadow; Bald Mt. 914 Comment
  UC562653  Carex pachycarpa Joseph P. Tracy 1932-7-11 10411 Humboldt Trinity Summit, Corral Prairie Corral Prairie; Trinity Summit, Corral Prairie 1584 Comment
  HSC7158  Carex pachycarpa H. E. Parks, J. P. Tracy 1935-6-16 11271 Humboldt Buck Mtn., lower NW slopes 793 Comment
  CAS-BOT-BC119224  Carex pachystachya Joseph Prince Tracy 1935-6-23 13984 Humboldt French Camp Ridge. 1066 Comment
  CAS-BOT-BC119245  Carex pachystachya Joseph Prince Tracy 1939-7-9 16340 Humboldt Snow Camp 1402 Comment
  UC562644  Carex pachystachya Joseph P. Tracy Jul 16 1930-Jul 19 1930 8984 Humboldt McKay Camp Northern Coast Ranges, South Fork Mountain 1676 Comment
  UC562661  Carex pachystachya Joseph P. Tracy 1935-6-8 13938 Humboldt Eureka Northern Coast Ranges 0 Comment
  SEINET10883545  Carex pachystachya Joseph P. Tracy 1935-6-8 Tracy 13938 Humboldt Eureka. Damp place in open ground. Comment
  HSC78036  Carex rostrata Gail Newton 1980-8-10 2050 Humboldt Near Blake Mtn. 1707 Comment
  HSC102533  Carex spectabilis M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-28 1519 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1106 Comment
  UC562635  Carex subbracteata Joseph P. Tracy 1936-6-9 14904 1/2 Humboldt Upper Mattole 121 Comment
  CAS-BOT-BC116909  Carex subbracteata var. subbracteata Alice Eastwood; John Thomas Howell 1937-6-22 4737 Humboldt Near Alder Point Comment
  UC562638  Carex subfusca Joseph P. Tracy 1936-6-17 14954 Humboldt lower foothills of nw slope Buck Mountain; Northern Coast Ranges 762 Comment
  CAS-BOT-BC115576  Carex tumulicola Joseph Prince Tracy 1912-7-26 3835 Humboldt Kneeland Prairie. 762 Comment
  CAS-BOT-BC115572  Carex tumulicola Joseph Prince Tracy 1930-7-10 8859 Humboldt In grassy opening, Brannan Mountain. 1219 Comment
  RSA91641  Carex tumulicola Joseph P. Tracy 1932-5-1 9853 Humboldt Grassy open places at Redway. Vicinity of Garberville. 122 Comment
  UC562649  Carex unilateralis Joseph P. Tracy 1927-7-17 8276 Humboldt Three Cabins; lower western foothills of Chaparral Mountain 457 Comment
  UC709397  Carex vesicaria var. major Joseph P. Tracy 1938-9-25 16170 Humboldt Lake Prairie Bald Mountain 1066 Comment
  SEINET201052  Carex viridula Joseph P. Tracy 1934-7-30 13505 Humboldt Along coast in front of South End of Stone Lagoon. Dry Lagoon. 3 Comment
  CAS-BOT-BC249128  Castilleja affinis Doris Kildale Gillespie 1931-6-7 10652 Humboldt South Fork Mt., Blake Lookout 1726 Comment
  HSC98629  Castilleja affinis subsp. affinis Cara Witte 2007-6-4 184 Humboldt Cold Spring. 0.5 mile S of Titlow Hill. 1386 Comment
  HSC20521  Castilleja affinis subsp. litoralis D. E. Anderson 1962-7-10 2244 Humboldt Luffenholtz Beach, about 2 mi. S of Trinidad along old Hwy. 101 Comment
  UC201381  Castilleja affinis subsp. litoralis Joseph P. Tracy 1918-7-21 5081 Humboldt Humboldt Hill; Northern Coast Ranges, Humboldt Bay Region 152 Comment
  CHSC19743  Castilleja ambigua subsp. humboldtiensis D. E. Anderson; N. Dennis 1965-6-8 100 Humboldt Salt marsh along east edge of Humbolt Bay, 1 mile south of Arcata. Comment
  HSC36100  Castilleja ambigua subsp. humboldtiensis Tom Mills 1974-5-12 Humboldt Beside Humboldt Bay near Bayside Cut-off Comment
  JEPS93175  Castilleja ambigua subsp. humboldtiensis Margriet Wetherwax and Kevin Downing 1993-8-9 2455 Humboldt just n Eureka (s side of Eureka Slough, e side of Humboldt Bay, near Bayside Rd and Myrtle, just past Pigeon Point, e side of road); Humboldt Bay 5 Comment
  JEPS26533  Castilleja applegatei subsp. martinii Joseph P. Tracy 1927-5-14 8001 Humboldt near South Fork; Trinity River Valley 182 Comment
  UC902257  Castilleja applegatei subsp. pinetorum Joseph P. Tracy 1948-9-5 18191 Humboldt head of Little Hors-Linto Creek; Trinity Summit 1371 Comment
  JEPS108698  Castilleja exserta C. Sander 2005-8-16 CA 330 81 Humboldt Manila Dunes 3 Comment
  HSC78976  Castilleja exserta subsp. latifolia L. P. Janeway, Paul Wilson 1984-5-25 825 Humboldt N Spit of Humboldt Bay, BLM lands near the Coast Guard Station 5 Comment
  SBBG54572  Castilleja exserta subsp. latifolia F. W. Pennell, J. Tracy 1940-7-6 26085 Humboldt back of beach, Table Bluff, W of Loleta Comment
  RSA167244  Castilleja litoralis Joseph P. Tracy 1950-6-8 18749 Humboldt Bear River Ridge, south slope near Capetown. Cape Ridge. One mile east of Cape Mendocino. 152 Comment
  RSA518654  Castilleja litoralis L. R. Heckard, T. I. Chuang 1971-7-1 2667 Humboldt Slope at south end of Freshwater Lagoon, 2 miles southwest of Orick. Comment
  HSC55840  Castilleja miniata G. L. Clifton, Griswold 1979-7-25 10790 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1814 Comment
  HSC99512  Castilleja miniata K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-22 174 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
  HSC72569  Castilleja pruinosa J. P. Smith, J. O. Sawyer 1976-5-2 8628 Humboldt S. R. 96, 4.9 mi. N of its junction with S.R. 299 122 Comment
  HSC99015  Castilleja pruinosa Cara Witte 2007-6-1 163 Humboldt Horse Mountain Botanical Area. Along Forest Service 6N38. 1311 Comment
  JEPS103928  Castilleja pruinosa T. I. and F. M. Chuang 1991-7-9 7876 Humboldt Horse Mt. Comment
  UC313721  Castilleja rubicundula subsp. lithospermoides Joseph P. Tracy 1923-6-18 6285 Humboldt Cape Mendocino Northern Coast Ranges (sw slopes fronting the ocean) 152 Comment
  CAS-BOT-BC83833  Ceanothus cuneatus var. cuneatus Dylan O. Burge 2009-5-11 1154 b Humboldt Willow Creek watershed, NW slope of Brush Mountain 410 Comment
  UC1070753  Ceanothus incanus A. E. Wieslander 1931-5-22 218 Humboldt Wilder Ridge Comment
  UC535732  Ceanothus incanus Eleanor Armstrong 1934-8-15 1187 Humboldt Richardson Grove 121 Comment
  RSA0050338  Ceanothus incanus Carl B. Wolf 1941-3-3 9992 Humboldt N. Coast Range, 1/2 miles N of Ettersburg on road to Honeydew. 305 Comment
  CAS-BOT-BC63725  Ceanothus integerrimus H. E. McMinn 1922-8-5 350 Humboldt Along Van Duzen River. 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
  UC164817  Ceanothus integerrimus J. P. Tracy 1903-5-24 1907 Humboldt Alder Point Eel River 152 Comment
  HSC37607  Ceanothus oliganthus var. sorediatus R. Sutherland 1975-7-11 10 .11775 Humboldt Along county rd. 244 Comment
  CAS-BOT-BC51216  Ceanothus parryi Mrs. H. C. Cantelow 1935-5-30 829 Humboldt N. of Garberville Comment
  HSC101658  Ceanothus parryi J. P. Smith, J. O. Sawyer 2011-4-23 13118 Humboldt Along Salmon Creek Rd., 4.6 miles from its junction with U.S. 101. 290 Comment
  HSC36681  Ceanothus parryi R. Sutherland 1975-4-22 8 .22475 Humboldt E of China Creek at county rd. 207 Comment
  HSC43181  Ceanothus parryi R. Sutherland 1975-7-3 2 .3775 Humboldt Along Ettersburg Rd. 488 Comment
  CAS-BOT-BC52045  Ceanothus prostratus Henry M. Pollard 1944-9-8 s.n. Humboldt Orleans Mt. 1524 Comment
  HSC18314  Ceanothus pumilus Francis Winter 1960-4-24 Humboldt Along rd., French Camp Ridge 915 Comment
  RSA46726  Ceanothus pumilus Doris K. Kildale 1937-8-15 15334 Humboldt High Divide Comment
  CAS-BOT-BC52220  Ceanothus thyrsiflorus Doris K. Kildale 1926-3-20 1553 Humboldt Big Lagoon Comment
  CAS-BOT-BC52983  Ceanothus thyrsiflorus H. E. McMinn 1922-8-4 334 Humboldt Along Van Duzer River, by redwoods Comment
  HSC37081  Ceanothus thyrsiflorus R. Sutherland 1975-5-17 2 .17575 Humboldt Horse Mtn. Rd. edge 518 Comment
  HSC79361  Ceanothus thyrsiflorus Kenneth Clark 1980-6-14 684 Humboldt Above N Fork of Dead Man's Gulch 213 Comment
  UC1193281  Ceanothus thyrsiflorus K. Cuff 124 Humboldt 8 mi e Petrolia; Quad. 28A3 60 Comment
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Jul 25 2009
  HSC56191  Ceanothus velutinus var. velutinus Gilbert Muth 1979-8-1 12131 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1677 Comment
  RSA120711  Centaurium muehlenbergii S. S. Tillett 1956-7-6 607 Humboldt Above Klamath River, along Ishi Rish Road, one mile north of Orleans. 168 Comment
  UC1198631  Centaurium muehlenbergii Joseph P. Tracy 1918-7-1 4965 Humboldt from South Fork to Scotia (Holmes Flat, along Eel River); Northern Coast Ranges, Eel River, Holmes Flat 60 Comment
  UC14951  Cephalanthera austiniae Joseph Burtt Davy and Walter C. Blasdale 1899-6-18 5625 Humboldt Bald Mt. Comment
  UC1196466  Cephalanthera austiniae Joseph P. Tracy 1911-7-12 3523 Humboldt mt. slopes along rd. near Three Creeks; Northern Coast Ranges 762 Comment
  CAS-BOT-BC384902  Cerastium arvense W. C. Blasdale 1896-5-31 s.n. Humboldt Eureka Comment
  UC161037  Cerastium arvense Joseph P. Tracy 1906-7-1 2515 Humboldt at Eureka Northern Coast Region, Eureka 0 Comment
  HSC68022  Cerastium glomeratum J. P. Smith, Steve Selva 1970-6-30 4140 Humboldt Comment
  CAS-BOT-BC400144  Ceratophyllum demersum Henry M. Pollard 1946-8-16 s.n. Humboldt Pond near Harley place, Orleans region Comment
  RSA2940  Cercis occidentalis Carl B. Wolf 1931-8-31 2380 Humboldt West side of South fork of Trinity River, 1 mi. above its mouth. Comment
  HSC56952  Chamaecyparis lawsoniana Overton, Butler 1979-7-23 9456 Humboldt Near Horse Mtn. Mine, close to the town of Willow Creek 1295 Comment
  CAS-BOT-BC166043  Chamerion angustifolium subsp. circumvagum Carl B. Wolf 1927-8-22 767 Humboldt Big Lagoon Comment
  CAS-BOT-BC68263  Cheilanthes gracillima J. H. Thomas 1949-6-13 923 Humboldt Six Rivers National Forest - along trail between Le Perron Flat and Whiteys Peak (East of town of Orleans). 1828 Comment
  HSC32344  Cheilanthes gracillima D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5636 Humboldt Senteney Rock, a large barren Franciscan Rock along Swayback Ridge. Comment
  HSC39679  Cheilanthes gracillima Thomas W. Nelson, Jane Nelson 1976-6-16 2744 Humboldt Just W of Alder Springs 1524 Comment
  HSC74806  Cheilanthes gracillima Gail Newton 1980-7-23 1717 Humboldt Near Packsaddle Ridge 1463 Comment
  HSC99459  Cheilanthes gracillima K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-7 113 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
  UCD97749  Chenopodium album Linda M. Barker 1976-8-24 1680 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  UC161392  Chenopodium botrys Chesnut and Drew 1888-7-1 Humboldt Grouse Creek Comment
  HSC55230  Chimaphila menziesii G. L. Clifton, Griswold 1979-8-2 12431 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  CAS-BOT-BC451388  Chimaphila menziesii S. Matthews; M. Goering; R. James 1985-5-10 060 Humboldt Gray Falls Campground 240 Comment
  CAS-BOT-BC451497  Chimaphila umbellata L. B. Kildale 1931-8-9 s.n. Humboldt Three Creeks on Willow Creek Road Comment
  HSC54228  Chimaphila umbellata Griswold, Butler 1979-7-12 7294 Humboldt Near Lone Pine Ridge, close to the town of Willow Creek. 1478 Comment
  HSC72793  Chimaphila umbellata M. A. Baker 1980-6-16 1925 Humboldt Near Monks Camp. 1097 Comment
  HSC41259  Chimaphila umbellata Brad Klipfel 1974-7-23 451 Humboldt Horse Mtn., N of the towers Comment
  SJSU913B  Chimaphila umbellata J. W. Tilden 1946-6-20 1011 Humboldt Bluff Cr c. 1.5 mi above Klamath R Comment
  HSC15439  Chlorogalum pomeridianum var. pomeridianum Paul Shields Jul 1955 Humboldt 6 mi. W of Myers Flat Comment
  POM92409  Chrysanthemum leucanthemum L. R. Abrams 1922-6-25 8236 Humboldt 2 miles south of Fortuna Comment
  HSC8056  Chrysolepis chrysophylla Hilda W. Grinnell 1932-7-9 5 Humboldt Above Kerlin Creek, S. Fork Mtn. Comment
  UC162706  Chrysolepis chrysophylla Joseph P. Tracy 1911-7-8 3448 Humboldt near Willow Creek (hill slopes at w side of Trinity River); Northern Coast Ranges 182 Comment
  SEINET8946802  Chrysolepis chrysophylla W. D. Billings 1940-6-25 1352 Humboldt Cedar Creek, 35 miles east of Arcata Comment
  CAS-BOT-BC36476  Chrysolepis chrysophylla var. minor Joseph P. Tracy 1934-8-29 13641 Humboldt Northern Coast Ranges. South Fork Mountain, along summit near Blake lookout 1706 Comment
  UC526690  Chrysolepis chrysophylla var. minor Joseph P. Tracy 1934-8-29 13641 Humboldt summit near Blake Lookout (South Fork Mountain); Northern Coast Ranges, South Fork Mountain 1706 Comment
  UCD110101  Chrysolepis chrysophylla var. minor Joseph P. Tracy 1936-8-7 15117 Humboldt Trinity Summit. 2 miles southeast of Devil's Hole. 1584 Comment
  HSC96494  Cicuta douglasii Gordon Leppig 1997-8-13 637 Humboldt Big Lagoon County Park 3 Comment
  UC180176  Cicuta douglasii Joseph P. Tracy 1914-9-6 4612 Humboldt between High Prairie and Snow Camp (Bald Mountain); Northern Coast Ranges, Bald Mountain 1219 Comment
  UC642314  Cicuta douglasii Joseph P. Tracy 1938-9-25 16169 Humboldt Bald Mountain, at Lake Prairie Lake Prairie; Bald Mountain, Lake Prairie 1066 Comment
  CAS-BOT-BC184830  Cinna latifolia Joseph P. Tracy 1935-7-25 14244 Humboldt Trinity Summit. Lower end of Brett Hole. 1584 Comment
  POM228358  Circaea alpina subsp. pacifica C. C. Harris, S. K. Harris 1936-6-22 672 Humboldt Yager Creek 732 Comment
  SEINET201069  Cirsium arvense Joseph P. Tracy 1933-8-13 12963 Humboldt Arcata Bottom 15 Comment
  HSC40773  Cirsium brevistylum Thomas W. Nelson 1976-7-9 3014 Humboldt Along S.R. 36 just E of Heley Creek Comment
  CDA1217  Cirsium douglasii var. douglasii T. C. Fuller 1962-8-6 9352 Humboldt Hwy 299, 3.4 miles east of Berry Summit. Comment
  OBI81546  Cirsium occidentale var. candidissimum Jill M. Bushakra, John Bushakra 2000-6-16 41 Humboldt Across Hwy 101/Hwy 271 from the Elfin Glen Gift Shop, north of the Standish-Hickey Prk. Opening in coniferous forest. 213 Comment
  SEINET11836350  Cirsium pastoris J. P. Tracy 1942-1 17302 Humboldt Trinity River Valley, at Willow Creek 152 Comment
  CAS-BOT-BC288712  Cirsium remotifolium Joseph P. Tracy 1930-7-21 8887 Humboldt Bear River RIdge Comment
  CAS-BOT-BC288716  Cirsium remotifolium Doris K. Kildale 1927-7-25 3835 Humboldt Table Bluff near lighthouse Comment
  UC582534  Cirsium remotifolium var. rivulare Joseph P. Tracy 1931-6-28 9596 Humboldt lower foothills of nw slope of Buck Mountain 914 Comment
  UC1122363  Clarkia amoena H. S. Yates 1936-6-23 5875 Humboldt 4 mi nne Cathays Peak; Dyerville Quadrangle Comment
  CAS-BOT-BC160952  Clarkia amoena subsp. amoena Doris K. Kildale 1927-7-17 3749 Humboldt Bug Creek 792 Comment
  CAS-BOT-BC160963  Clarkia amoena subsp. amoena Ynez Whilton Winblad 1941-6-24 s.n. Humboldt Between Garberville and Pepperwood Comment
  HSC8649  Clarkia amoena subsp. huntiana Thomas W. Nelson, James Nelson 1975-9-3 2191 Humboldt Along N side of Ashfield Butte Comment
  RSA23649  Clarkia amoena subsp. huntiana Carl B. Wolf 1939-7-8 9520 Humboldt Devil s Gate on road to Petrolia; 1 mile inland 152 Comment
  RSA0059979  Clarkia amoena subsp. whitneyi C. L. Hitchcock, J. S. Martin 1939-7-14 5432 Humboldt 1 mile east of Shelter Cove Comment
  CAS-BOT-BC164177  Clarkia concinna M. S. Jussel 1931-5-2 s.n. Humboldt Garberville Comment
  RSA20945  Clarkia concinna subsp. concinna Carl B. Wolf 1937-6-19 8917 Humboldt North Coast Ranges, Van Duzen River, 2.8 miles West of Dinsmores 457 Comment
  JEPS43685  Clarkia gracilis subsp. sonomensis Joseph P. Tracy 1931-6-28 9597 Humboldt lower foothills of nw slope Buck Mountain; Northern Coast Ranges 762 Comment
  CAS-BOT-BC172503  Clarkia purpurea subsp. quadrivulnera Doris K. Kildale 1926-6-9 2141 Humboldt Horse Mountain 1219 Comment
  JEPS43554  Clarkia purpurea subsp. quadrivulnera W. L. Jepson 1932-8-8 16490 Humboldt below Chaney Ranch; Grasshopper Peak 822 Comment
  CAS-BOT-BC164824  Clarkia rhomboidea Henry M. Pollard 1948-8-4 s.n. Humboldt Orleans Mt. 1371 Comment
  UCD100846  Claytonia rubra subsp. depressa Linda M. Barker 1976-2-22 1318 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  HSC99411  Claytonia rubra subsp. rubra K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-6-28 60 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
  HSC32285  Claytonia saxosa D. E. Anderson, S. Dowty, Thomas W. Nelson 1972-6-14 5623 Humboldt Mt. Lassic and two smaller peaks to immediate E 1768 Comment
  RSA249337  Claytonia saxosa D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5623 Humboldt Mount Lassic and 2 smaller peaks to immediate east. 1768 Comment
  RSA259540  Claytonia saxosa D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5623 Humboldt Mount Lassic and 2 smaller peaks to immediate east. 1768 Comment
  CHSC67764  Claytonia sibirica Vernon H. Oswald 1997-2-12 8308 Humboldt Elk Head, N end of Trinidad State Beach. Locally abundant on moist, shaded floor of Sitka spruce- red alder woodland along trail leading to the bluffs at Elk Head. 30 Comment
  HSC54582  Claytonia sibirica Overton, Butler 1979-7-24 9629 Humboldt Near Friday Camp, close to the town of Willow Creek. 1250 Comment
  UC162973  Claytonia sibirica Joseph P. Tracy 1911-6-4 3212 Humboldt 5 mi from coast Little River (along Little River); Northern Coast Region 121 Comment
  HSC69844  Claytonia sibirica R. Kalal 1980-5-5 48 Humboldt Fickel Hill Rd., 1 mi. E of 11th St., Arcata 183 Comment
  RSA0059513  Claytonia sibirica H. M. Pollard 1948-7-22 s.n. Humboldt Perch Creek Canyon, near Orleans. Comment
  HSC14261  Clinopodium douglasii Paul Shields Jul 1955 Humboldt 3 mi. N of Weott Comment
  CAS-BOT-BC499342  Clintonia andrewsiana Elizabeth Parsons Hawver 1915-6-1 s. n. Humboldt Unspecified Comment
  HSC15445  Clintonia andrewsiana J. F. Knezevich 1968-5-13 428 Humboldt Near Arcata above Freshwater Forest Comment
  HSC15448  Clintonia andrewsiana M. L. Stuart 1965-4-28 34 Humboldt Up Fern Lake Rd. about 400 yds. Comment
  RSA377079  Clintonia andrewsiana Anstruther Davidson 1927-05 s.n. Humboldt [label data illegible[ Comment
  UC1541328  Clintonia andrewsiana W. K. Parks 1932-8-24 1135 Humboldt 1 mi e of Grizzly Creek (Van Duzen River); Van Duzen River 152 Comment
  UC639123  Clintonia andrewsiana E. Fritz 1936-7-8 Humboldt near Redcrest (off Redwood Highway) Comment
  UC1222545  Clintonia uniflora Joseph P. Tracy 1951-6-26 19556 Humboldt Snow Camp 1402 Comment
  CHSC70001  Coincya monensis Jim Belsher 1997-2-13 1 Humboldt Collected in the lot East Southeast of the Manila Community Services District sewage pump station. Empty lot. 6 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
  RSA127485  Collinsia grandiflora Milo S. Baker 1946-6-15 11481 Humboldt Horse Mt. Road at Ski Lodge. 1220 Comment
  CHSC63420  Collinsia linearis Vernon H. Oswald 1994-6-29 6357 Humboldt Titlow Hill Rd. (Forest Rd. 1) 3.9 mi S of Hwy. 299, SW of Willow Creek. 1289 Comment
  SEINET12268979  Collinsia linearis J. P. Tracy 1950-1 18969 Humboldt Happy Camp Mountain, Trinity Summit on ridge 2 mi E of Groves Prairie 1524 Comment
  UC1347175  Collinsia linearis Alice Eastwood, John Thomas Howell 1937-6-24 4858 Humboldt road to Horse Mountain Horse Mountain Comment
  HSC70376  Collinsia parviflora M. A. Baker 1980-6-7 1783 Humboldt Near Brush Mtn. 1128 Comment
  JEPS26358  Collinsia sparsiflora var. sparsiflora Joseph P. Tracy 1932-5-10 9932 Humboldt Bear River Ridge; North Coast Ranges; Bear River Ridge 609 Comment
  UC147870  Collinsia sparsiflora var. sparsiflora J. P. Tracy 1904-4-17 2012 Humboldt immediate vicinity of Eureka 0 Comment
  HSC100912  Collinsia torreyi Carl C. Marshall Jun 1886 301 Humboldt Trinity Summit. Comment
  JEPS7057  Collinsia torreyi var. wrightii Joseph P. Tracy 1935-7-28 14314 Humboldt head of Devil's Hole Trinity Summit 1828 Comment
  UC582447  Collinsia torreyi var. wrightii Joseph P. Tracy 1935-7-28 14314 Humboldt Trinity Summit, Head of Devils Hole Head of Devils Hole; Trinity Summit, Head of Devils Hole 1828 Comment
  HSC53963  Collomia heterophylla Griswold, Butler 1979-7-11 7017 Humboldt Near Snow Camp Lake, close to the town of Willow Creek. 1393 Comment
  UC60862  Collomia heterophylla Harley P. Chandler June, 1901 1401 Humboldt Klamath River North Coast Ranges 213 Comment
  UC717114  Collomia heterophylla S. K. Harris 1942-6-12 1386 Humboldt Fickle Hill Road to Boynton Prairie (roadside banks; Sn 2 e) 600 Comment
  CAS-BOT-BC230665  Collomia tracyi Milo S. Baker 1946-6-15 11476 Humboldt Horse Mountain Road, about 2 miles up from Trinity Highway 1066 Comment
  SBBG103147  Collomia tracyi D. H. Wilken with C. Donahue 1976-7-16 12708 Humboldt Horse Mtn Natural Area, N of Berry Summit 1310 Comment
  UC1197345  Conium maculatum Joseph P. Tracy 1933-8-22 12975 Humboldt at Eureka Eureka 6 Comment
  UCR275122  Conium maculatum Charity A. Hartshorn 2016-4-24 19 Humboldt Arcata Marsh & Wildlife Sanctuary, east end of Klopp Lake 7 Comment
  RSA246751  Conium maculatum R. F. Thorne, P. Everett 1965-8-8 35237 Humboldt N edge of Eureka, E of Hwy. 101 5 Comment
  HSC28189  Convolvulus arvensis Richard Curtis 1973-9-28 25 Humboldt Along R. R. track near mouth of Nanning Cr. Comment
  UC709462  Coptis laciniata Joseph P. Tracy 1941-4-8 16856 Humboldt Willow Creek Canyon, along Trinity Highway Willow Creek Canyon; , Trinity Highway 762 Comment
  UC1196450  Corallorhiza maculata Joseph P. Tracy 1930-7-18 9063 Humboldt near McKay Camp; South Fork Mountain 1676 Comment
  UC1196453  Corallorhiza maculata Joseph P. Tracy 1926-5-15 7497 A Humboldt near Ashfield Butte; Northern Coast Ranges, Kneeland Prairie 762 Comment
  HSC44843  Corallorhiza mertensiana Thomas W. Nelson, Jane P. Nelson 1977-7-1 3566 Humboldt N side of ridge between Bear Creek & Blanket Creek 1524 Comment
  UC1196458  Corallorhiza mertensiana Joseph P. Tracy 1926-6-6 7580 Humboldt Hoopa Mountain Northern Coast Ranges (near summit on road from Hoopa to Bair's) 1066 Comment
  UC936240  Cordylanthus tenuis subsp. viscidus Joseph P. Tracy 1947-8-24 17884 Humboldt ridge top 1 mi w Mud Springs; Trinity Summit 1158 Comment
  JEPS15874  Corethrogyne filaginifolia Joseph P. Tracy 1928-5-20 8442 Humboldt Petrolia; Mattole Valley 60 Comment
  UC1223039  Corethrogyne filaginifolia Joseph P. Tracy 1947-6-8 17705 Humboldt 5 mi e of town old Strong's District School House; Carlotta 60 Comment
  UC1601151  Corethrogyne filaginifolia Joseph P. Tracy 1934-7-21 13474 Humboldt near Samoa; Northern Coast Region, Humboldt Bay 6 Comment
  HSC44069  Cornus nuttallii Thomas W. Nelson, Jane P. Nelson 1977-7-1 3560 Humboldt Along Blanket Creek tributary. 1463 Comment
  RSA697172  Cornus nuttallii J. R. Bruff 1937-8-17 919 Humboldt Richardson Grove. Comment
  HSC57681  Cornus sericea subsp. sericea G. L. Clifton, Griswold 1979-7-25 10887 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1784 Comment
  UC183572  Cornus sericea subsp. sericea Joseph P. Tracy 1912-10-20 4010 Humboldt Alton Northern Coast Region, Alton 30 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
  RSA0019462  Cornus sessilis H. M. Pollard 1948-7-27 s.n. Humboldt Mouth of Red Cap Creek near Orleans. Comment
  UC146107  Corylus californica Joseph P. Tracy 1906-6-24 2500 Humboldt Humboldt Hill, S side North Coast Region, region about Humboldt Bay 0 Comment
  HSC98702  Corylus cornuta var. californica Cara Witte 2007-7-27 606 Humboldt Forest Service Road 4N32. 1 mile south of intersection with Forest Service Road 4N32E. 1445 Comment
  CHSC102916  Cotoneaster pannosus Arthur Lee Jacobson 2007-8-13 Humboldt North Coast. North of Mill Creek and W of Stagecoach Road, southern part of Trinidad State Beach. 50 Comment
  UC1199280  Cotula australis J. P. Tracy 1901-3-16 994 Humboldt Eureka Comment
  SEINET3817858  Cotula coronopifolia H. E. Parks 24211 Humboldt Little River State Park Comment
  UCR48592  Cotula coronopifolia R. D. Goeden, Don W. Ricker 1987-9-2 870902- 16 Humboldt North Coast, Loleta, at bay on Cannibal Road 3 Comment
  CAS-BOT-BC291343  Cotula coronopifolia H. E. Parks 1941-9-1 24211 Humboldt Little River State Park Comment
  HSC43416  Cotula coronopifolia R. Sutherland 1978-2-18 5 .18278 Humboldt S side mouth of Mattole River 8 Comment
  UCD112977  Crataegus douglasii Louis C. Wheeler 1950-8-14 6780 Humboldt 5 mi. east of Shelter Core. Comment
  JEPS87029  Crepis capillaris Dean W. Taylor 1991-9-15 12288 Humboldt along Hwy 101 near mouth of Tom Creek; North Coast Ranges, Big Lagoon Comment
  CAS-BOT-BC291485  Crepis capillaris Carl B. Wolf 1927-8-28 1188 Humboldt Salt Marsh Eureka Bay on road to Arcata Comment
  CDA4431  Crepis capillaris T. C. Fuller 1958-6-17 597 -58 Humboldt Wildcat Ridge near Bunker Hill. 0 Comment
  UC427860  Crocidium multicaule H. E. Parks, J. P. Tracy 1930-5-25 867 Humboldt Laribee Valley Comment
  HSC49085  Crocosmia X crocosmiiflora Patricia Shesgreen 1978-8-5 131 Humboldt Arcata, on Spring St. between 16th and 17th Sts. Comment
  HSC41196  Cryptantha affinis Thomas W. Nelson 1977-7-4 3611 Humboldt Along road N of Alder Springs. 1524 Comment
  UC667006  Cryptantha affinis Joseph P. Tracy 1939-7-9 16335 Humboldt Snow Camp 1402 Comment
  HSC40851  Cryptantha affinis Thomas W. Nelson 1976-7-9 2998 Humboldt Along W side of ridge S of E peak of Lassic Mtn., (Signal Peak). 1524 Comment
  HSC100401  Cryptantha flaccida Carl C. Marshall Jun 1887 456 Humboldt Near Harris. Comment
  UC1222265  Cryptantha torreyana Joseph P. Tracy 1949-8-11 18470 Humboldt 2-6 mi s Grouse Mt. (e of headwaters of Redwood Creek, power plant southward); Kinsey Ridge 1280 Comment
  UC1134204  Cupressus lawsoniana C. R. Clar 1930-7-14 98 Humboldt Supply Creek Hoopa Quad., Hoopa Indian Reservation, Supply Creek 609 Comment
  CDA5584  Cuscuta approximata var. urceolata E. C. Whitney 1959-8-11 2942 Humboldt Elhert Reynolds property, 1 mile south of Fortuna, Loop Road, 2nd field on south side of road. 0 Comment
  CAS-BOT-BC224391  Cuscuta californica Joseph P. Tracy 1949-8-4 18408 Humboldt Trinity Summit. Mud Springs 1341 Comment
  UC562671  Cuscuta californica Joseph P. Tracy Jul 16 1930-Jul 19 1930 8912 Humboldt near McKay Camp; Northern Coast Ranges, South Fork Mountain 1676 Comment
  UC1191663  Cuscuta salina var. major Malcolm A. Nobs and S. Galen Smith 1949-8-3 1202 Humboldt about 2 mi n Eureka; Humboldt Bay Comment
  HSC45646  Cynoglossum grande Diane L. Reed 1978-5-27 135 Humboldt Horse Mtn., Titlow Hill Rd., 2.7 mi. from Hwy. 299 Comment
  HSC73936  Cynoglossum grande Gail Newton 1980-6-28 675 Humboldt Near Mad River Butte. 1536 Comment
  HSC71713  Cynosurus echinatus M. A. Baker 1980-6-26 2433 Humboldt Near Sims Creek 610 Comment
  CAS-BOT-BC136508  Cypripedium montanum Doris K. Kildale 1929-5-26 9116 Humboldt Field redacted by CAS, contact the data manager for more information Comment
  CAS-BOT-BC94774  Danthonia californica R. C. Wenk; P. Hopkinson; M. Hammond; S. Spiegal 2008-6-6 838 Humboldt Humboldt Redwoods State Park. Pole Line Prairie, along Pole Line Road, 1 air mile N of Mattole Road, 6 air miles E of 274 Comment
  HSC71722  Danthonia californica Marc Baker 1980-7-26 2465 Humboldt Near Sims Creek. 610 Comment
  UCD60985  Danthonia californica E. B. Copeland 1930-6-5 Humboldt Scotia. Comment
  UC526687  Danthonia californica var. americana Joseph P. Tracy 1932-7-10 10392 Humboldt Corral Prairie Klamath Mountains, Trinity Summit 1524 Comment
  UCD60514  Danthonia californica var. americana R. Tofsrud 1947-6-27 s.n. Humboldt About halfway between Yager and Kneeland on county road. Comment
  UCD60966  Danthonia californica var. americana R. Tofsrud 1948-9-3 Humboldt Border of Clear Lake, on road from Horse Mt. to Grouse Mt. 1371 Comment
  RSA10087  Danthonia californica var. californica Joseph P. Tracy 1930-7-10 8860 Humboldt Brannan Mountain 1220 Comment
  CAS-BOT-BC420358  Darmera peltata Doris K. Kildale 1928-6-24 5247 Humboldt Redwood Creek at Berry's Comment
  HSC20251  Darmera peltata C. F. Hudson 1964-5-7 6436 Humboldt 2 mi. up river from the mouth of Mad River, S bank 1 Comment
  JEPS12214  Datura stramonium Lincoln Constance 1934-6-18 897 Humboldt border N. Dyerville Flat (R.R. Sta and P.O., Bull Creek region, near South Fork Eel River); South Fork Eel River, Bull Creek Region Comment
  RSA470773  Daucus pusillus M. O'Mera 1974-6-2 496 Humboldt South Spit to Humboldt Bay Comment
  UC1197346  Daucus pusillus Joseph P. Tracy 1927-6-26 8211 Humboldt Stone Lagoon sand beach 6 Comment
  HSC78607  Daucus pusillus L. P. Janeway, Paul Wilson 1984-5-7 767 Humboldt N Spit of Humboldt Bay, just behind foredunes near 'Flag 1 3 Comment
  UC160929  Delphinium decorum subsp. tracyi Harley P. Chandler June 1901 1289 Humboldt Hupa Indian Reservation North Coast Ranges 1097 Comment
  HSC24971  Delphinium decorum subsp. tracyi Gerald T. Rood 1962-5-11 6 Humboldt Knneland Rd. 1.0 mi. W of Barry Rd. Comment
  HSC95837  Delphinium decorum subsp. tracyi Kevin Thomas 2004-4-26 14 Humboldt Titlow Hill Rd. Comment
  UC1196321  Delphinium decorum subsp. tracyi Joseph P. Tracy 1908-6-9 2649 Humboldt open places near hilltops Northern Coast Ranges, Kneeland Prairie 762 Comment
  UC183075  Delphinium decorum subsp. tracyi Joseph P. Tracy 1913-6-17 4148 Humboldt Burr Valley Northern Coast Ranges, Buck Mountain (nw slope of mt.) 1066 Comment
  RSA304854  Delphinium gracilentum James R. Shevock 1971-5-29 643 Humboldt Trinity Hwy. 457 Comment
  JEPS60593  Delphinium hesperium subsp. hesperium Lincoln Constance 1934-5-29 713 Humboldt Upper Look Prairie Bull Creek Region, South Fork Eel River 365 Comment
  HSC25007  Delphinium nudicaule D. E. Anderson 1965-5-1 3589 Humboldt W facing sheer cliff above Trinity River along Hwy. 96 Comment
  UC1196343  Delphinium trolliifolium Joseph P. Tracy 1908-6 2774 Humboldt opposite Buck Mountain; Northern Coast Ranges, valley of Van Duzen River 762 Comment
  HSC35350  Delphinium trolliifolium A. M. Montalvo, J. D. Ackerman 1975-6-22 489 Humboldt 6.4 mi. W of Dinsmore on Hwy. 36 Comment
  JEPS23302  Delphinium trolliifolium W. L. Jepson 1934-5-6 16681 Humboldt Little Larrabee Creek Comment
  UC1196337  Delphinium trolliifolium Joseph P. Tracy 1939-5-28 16310 Humboldt near Centerville 60 Comment
  CDA18064  Deschampsia cespitosa subsp. cespitosa Huggel 1999-7-3 PDR 1223445 Humboldt Railroad right-of-way, Eureka. 0 Comment
  HSC27104  Deschampsia cespitosa subsp. holciformis L. M. Malloy 1965-5-19 38 Humboldt Arcata, southside of Samoa Rd., opposite of KATA radio station, adjacent to the railroad tracks, bank of a drainage ditch. Comment
  CAS-BOT-BC192702  Deschampsia danthonioides L. B. Kildale 1930-6-1 9768 Humboldt Klamath River at Bluff Creek Comment
  HSC98118  Deschampsia danthonioides Cara Witte 2007-6-21 328 Humboldt Along National Forest 1. 3/4 mile north of Brays Opening. Near Board Camp area. 1365 Comment
  HSC58402  Deschampsia elongata Griswold, Butler 1979-7-11 7035 Humboldt Near Snow Camp Lake, close to the town of Willow Creek. 1393 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
  RSA126941  Deschampsia elongata H. S. Yates 1936-6-17 5706 Humboldt Lower northwest slope of Buck Mountain 793 Comment
  RSA293158  Deschampsia elongata J. P. Smith 1977-7-3 9245 Humboldt Six Rivers National Forest. Along the road to Onion Lake, just above Blue Lake. 976 Comment
  UC526673  Deschampsia elongata Joseph P. Tracy 1932-7-14 10552 Humboldt Corral Prairie, Trinity Summit, Klamath Mts. Klamath Mts., Trinity Summit, Corral Prairie 1524 Comment
  HSC55099  Dicentra formosa G. L. Clifton 1979-7-31 11813 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  HSC8359  Dicentra formosa J. Sandborg, F. Sandborg May 1968 9 Humboldt Bluff Creek near Notice Creek 793 Comment
  UC1021939  Dicentra formosa Rolf Y. Berg 1955-6-17 Humboldt n of Wiott (Highway 101, Avenue of the Giants) Comment
  CAS-BOT-BC402402  Dicentra formosa subsp. formosa Mrytle Paulson 1918-4-18 s.n. Humboldt Eureka Comment
  CAS-BOT-BC402406  Dicentra formosa subsp. formosa J. P. Tracy 1904-4-17 2013 Humboldt Immediate vicinity of Eureka 152 Comment
  JEPS5677  Dichelostemma X venustum Milo S. Baker 138 a Humboldt South Fork of Yager Creek Comment
  UC1198184  Dichelostemma ida-maia Joseph P. Tracy 1930-6-21 8773 Humboldt Larrabee Valley 731 Comment
  HSC45244  Dichelostemma ida-maia Thomas W. Nelson, Jane P. Nelson 1977-7-1 3574 Humboldt Along rd. 2S08 below Goat Rock 1524 Comment
  JEPS11291  Digitalis purpurea Lincoln Constance 1934-5-26 682 Humboldt s end Dyerville Bridge (bar of South Fork of Eel River); South Fork Eel River, Bull Creek Region 45 Comment
  HSC30352  Digitalis purpurea E. A. Wise 1 Humboldt Base of Cypress Hall Dormitory, Humboldt State University Comment
  UC198610  Digitalis purpurea Joseph P. Tracy 1917-5-30 4790 Humboldt Dows Prairie Comment
  CAS-BOT-BC151742  Diplacus kelloggii Milo S. Baker 1925-4-7 241 a Humboldt Blue Lake Comment
  UC1409176  Dipsacus fullonum Robert F. Thorne and P. Everett 1965-8-9 35282 Humboldt 2.5 mi n Arcata Comment
  IRVC2496  Disporum smithii R. H. Whittaker, W. A. Niering U Humboldt Humboldt Redwoods State Park. Comment
  JEPS55589  Disporum smithii W. Roderick 1961-6-28 Humboldt 5.4 road mi ne of Weitchpec (Klamath River); Klamath River Comment
  HSC9633  Distichlis spicata D. J. McVean 1965-5-22 83 Humboldt Along slough just W of Jackson Rd., 1/4 mi. N of Samoa Rd. Comment
  UC1198619  Dodecatheon hendersonii Joseph P. Tracy 1923-3-17 6165 Humboldt vicinity Garberville; vicinity of Garberville 121 Comment
  JEPS14701  Dodecatheon jeffreyi Joseph P. Tracy 1927-8-22 8340 Humboldt near High Prairie (Bald Mountain); Northern Coast Ranges, Bald Mountain 1066 Comment
  RSA178586  Downingia yina Joseph P. Tracy 1951-6-21 19527 Humboldt back of Everett Beck House (formerly George Fray) bed of former Goose Lake, Hydesville. Comment
  HSC40707  Drosera rotundifolia J. P. Smith, T. Nelson, Robert M. Specht 1977-4-10 9015 Humboldt SE of Hwy. 101 at the SW end of the bridge over Big Lagoon. Comment
  HSC35347  Drymocallis glabrata A. M. Montalvo, J. D. Ackerman 1975-6-22 480 Humboldt 6.4 mi. W of Dinsmore on Hwy. 36 Comment
  UC585624  Drymocallis glandulosa Joseph P. Tracy 1935-5-25 13899 Humboldt Dobbyn Creek 152 Comment
  CAS-BOT-BC159614  Drymocallis glandulosa var. glandulosa Doris K. Kildale 1926-5-9 1993 Humboldt Kneeland Prairie 762 Comment
  UC903191  Drymocallis glandulosa var. wrangelliana Mrs. H. P. Bracelin 1931-5-2 285 Humboldt 3.5 mi s Alton; s of Alton Comment
  HSC44528  Drymocallis lactea var. lactea Brad Klipfel 1973-7-1 136 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC33655  Dryopteris arguta Margaret Weatherwax 1975-6-1 172 Humboldt Ward Rd. to Snow Camp Comment
  RSA137328  Dryopteris arguta I. L. Wiggins 1957-6-21 14140 Humboldt Margin of grassy slide area on east side of road, 1 mile south of Garberville Comment
  CAS-BOT-BC71056  Dryopteris expansa Doris K. Kildale 1928-12-23 6761 Humboldt on Orick - Bald Hills road Comment
  HSC26296  Dudleya farinosa T. O. Osborne 1970-9-16 39 Humboldt Blank Rock, 1/4 mi. W Trinidad Head Comment
  CAS-BOT-BC113642  Eleocharis acicularis Doris K. Kildale 1931-5-16 s.n. Humboldt Snow Camp Comment
  UC1103652  Eleocharis acicularis Joseph P. Tracy 1936-6-28 15025 Humboldt Lake Prairie Bald Mountain 1066 Comment
  CAS-BOT-BC113646  Eleocharis acicularis LeRoy Abrams 1916-7-18 6095 Humboldt Lagoon back of dunes. Arcata to Trinidad. Comment
  UC666876  Eleocharis acicularis Joseph P. Tracy 1937-8-12 15626 Humboldt Lake Prairie Bald Mountain (edge of bog) 1066 Comment
  JEPS19330  Eleocharis bella Joseph P. Tracy 1935-7-27 14299 Humboldt McKay Prairie Trinity Summit 1584 Comment
  UC213006  Eleocharis bella Joseph P. Tracy 1919-5-31 5180 Humboldt shores of Lack Pond, near Willow Creek Northern Coast Ranges, Trinity River Valley 152 Comment
  JEPS19333  Eleocharis rostellata Joseph P. Tracy 1932-7-14 10559 Humboldt Corral PRairie, Trinity Summit 1584 Comment
  HSC76540  Elymus glaucus Denis Kearns 1981-7-24 444 Humboldt Near Whiteys Peak. 1768 Comment
  JEPS71189  Elymus glaucus subsp. glaucus W. L. Jepson 1936-8-8 17859 Humboldt Richardson Grove South Fork Eel River Comment
  SD90214  Epilobium angustifolium Benjamin C. Stone Jun 1952 129 Humboldt 20 miles south of Klamath. 14 Comment
  SDSU8812  Epilobium angustifolium Harvey 1938-8-13 2236 Humboldt Stephens Grove Comment
  HSC16340  Epilobium brachycarpum D. E. Anderson 1961-9-23 1833 Humboldt 2.3 mi. S of Kneeland corner Comment
  HSC98656  Epilobium brachycarpum Cara Witte 2007-7-26 589 Humboldt National Forest 1 on Kinsey Ridge. 1/4 mile south of intersection with 4N06. Near power poles. 1283 Comment
  HSC99131  Epilobium brachycarpum Cara Witte 2007-7-24 571 Humboldt Titlow Hill. 1 mile north of turn off to Cold Spring. 1484 Comment
  POM225535  Epilobium brachycarpum P. A. Munz 1936-8-10 14337 Humboldt Little Van Duzen River, 15 miles east of Bridgeville. Comment
  UC1198485  Epilobium brachycarpum Joseph P. Tracy 1934-8-31 13648 Humboldt roadside Kneeland Prairie 762 Comment
  SBBG60140  Epilobium canum subsp. latifolium L. Rowntree 1931-7-21 Humboldt Mattole River 2 mi from Petrolia Comment
  SBBG60143  Epilobium canum subsp. latifolium L. Rowntree 1931-7-21 Humboldt Mattole River Comment
  CDA30723  Epilobium ciliatum M. K. Beyers, I. Shepardson 2009-9-13 253 Humboldt Off the eastern side of State Route 254 (Avenue of the Giants), along the Eel river, on and along a steep-cut bank that has been cemented over here, probably to prevent erosion. 0 Comment
  HSC74688  Epilobium ciliatum subsp. ciliatum Gail Newton 1981-8-7 2467 Humboldt Near Board Camp Mtn. 1478 Comment
  HSC49655  Epilobium ciliatum subsp. watsonii J. P. Smith 1971-10-6 4953 Humboldt End of Murray Rd. in McKinleyville. Comment
  HSC67190  Epilobium minutum Thomas W. Nelson, James Nelson 1980-6-10 5426 Humboldt Along NE side of Red Mtn. 1433 Comment
  UC20073  Epilobium minutum Harley P. Chandler June, 1901 1307 Humboldt Hupa Indian Reservation North Coast Ranges Comment
  SEINET10632323  Epilobium oreganum Jane P. Nelson, Thomas W. Nelson 1975-7-20 Nelson 2053 Humboldt T2S, RSE, Sec 13; wet boggy serpentine soil under Jeffrey pine forest beside Rd 2508 to Pine Mtn. Comment
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Feb 3 2021
  HSC12757  Epilobium septentrionale M. J. Athey 1970-10-31 9 Humboldt Where Maple Creek drains into the Mad River, Maple Creek Comment
  UC204002  Epilobium torreyi Joseph P. Tracy 1918-7-6 5050 Humboldt near Humboldt-Mendocino County Line; Northern Coast Ranges, South Fork of Eel River 152 Comment
  HSC16604  Epipactis gigantea D. E. Anderson 1967-7-10 4368 Humboldt Mad river canyon, 3 mi. S of Blue Lake Comment
  CAS-BOT-BC58003  Equisetum Doris K. Kildale 1925-8-18 1253 Humboldt McKay's Prarie - Trinity Summit. 1524 Comment
  HSC98068  Equisetum arvense Cara Witte 2007-7-11 505 Humboldt Grouse Mountain. Forest Service Road 5N04. Near spring. 1583 Comment
  UC667935  Equisetum hyemale subsp. affine Joseph P. Tracy 1928-6-17 8456 Humboldt at Willow Creek Trinity River Valley Comment
  UC302063  Equisetum laevigatum Joseph P. Tracy 1913-6-16 4142 Humboldt opposite Buck Mt. (Dinsmore's Ranch); Northern Coast Ranges, valley of Van duzen River 762 Comment
  CHSC60063  Equisetum telmateia Eric Hartwell 1983-3-30 9 Humboldt Ca. 0.25 miles east of jct. Of Jacoby Creek Rd. and Sonnerfelt Rd., NW1/4 of Sect.11. 97 Comment
  HSC36227  Equisetum telmateia subsp. braunii John Rehling 1975-4-21 52 Humboldt Along Jolly Giant Creek behind HSU campus. Comment
  UC211495  Equisetum telmateia subsp. braunii Chesnut and Drew 1888-8-1 Humboldt Grouse Creek Comment
  UCD63880  Eragrostis mexicana subsp. virescens Joseph P. Tracy 1950-9-22 19372 Humboldt Klamath River, near Slate Creek. Below Orleans 8 miles. 121 Comment
  CAS-BOT-BC284096  Eragrostis pectinacea var. pectinacea Henry M. Pollard 1944-9-1 s.n. Humboldt Near Orleans Comment
  HSC57958  Eremogone congesta G. L. Clifton, Griswold 1979-7-31 11658 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1719 Comment
  CAS-BOT-BC174186  Eremogone congesta var. congesta Henry M. Pollard 1948-7-31 s.n. Humboldt Orleans Mt. 1828 Comment
  CAS-BOT-BC131507  Ericameria arborescens H. E. McMinn 1922-8-3 476 Humboldt Mt. slope - above S.F., Eel River Comment
  CAS-BOT-BC296111  Erigeron foliosus var. confinis Joseph P. Tracy 1935-6-23 13967 Humboldt French Camp Ridge 1066 Comment
  SBBG52999  Erigeron glaucus J. D. Hobson -Jul-1966 Humboldt beach and cliff at S end of sand spit forming Eureka Harbor, 10 mi S of Eureka Comment
  HSC104433  Erigeron maniopotamicus Bianca Hayashi 2013-6-11 Humboldt Twin Lakes area, north of Board Camp Mountain 1280 Comment
  UC581734  Erigeron philadelphicus var. philadelphicus Joseph P. Tracy 1936-6-17 1463 Humboldt on nw slope Buck Mountain; Northern Coast Ranges, , Burr Valley 1066 Comment
  UC1223011  Erigeron robustior Joseph P. Tracy 1942-7-4 17371 Humboldt 2 mi w McClellan House (at Camp Desparation near the old Sweany place); McClellan Mountain 609 Comment
  UC53950  Erigeron strigosus var. strigosus Harley P. Chandler 1901-6-1 1402 Humboldt Klamath River 243 Comment
  UC906676  Eriodictyon californicum Joseph P. Tracy 1947-7-5 17795 Humboldt near Mud Springs Trinity Summit (Trinity Summit); , near Mud Springs 1371 Comment
  HSC97398  Eriogonum compositum var. compositum Benjamin Hart, Erin Lonergan 2007-6-11 4 Humboldt 14.1 mi. S of Hwy. 299 on NF1 1524 Comment
  CAS-BOT-BC259163  Eriogonum latifolium Carl B. Wolf 1937-9-12 9331 Humboldt Clam Beach 7 Comment
  UC665682  Eriogonum latifolium H. E. Parks August,1941 24198 Humboldt sand dunes, Little River Little River Comment
  UCR18930  Eriogonum latifolium Charlotte M. Hoak 1931-7-14 s.n. Humboldt Sand Dunes above Eureka 13 Comment
  CAS-BOT-BC259542  Eriogonum luteolum var. luteolum Mrs. E. C. Van Dyke 1931-6-30 s.n. Humboldt Willow Creek Comment
  HSC17446  Eriogonum nudum var. auriculatum C. B. Wolf 1927-8-30 1233 Humboldt 2 mi. S of Petrolia on the Matole River near the road crossing the river Comment
  CAS-BOT-BC261490  Eriogonum nudum var. nudum A. A. Heller 1924-7-20 13863 Humboldt Along the Eel River at Phillipsville Comment
  HSC103088  Eriogonum nudum var. nudum Sydney Carothers 2014-6-22 5 Humboldt Six Rivers National Forest, Lassics Botanical Area; on saddle between Peak 1 and Mt. Lassic 1796 Comment
  HSC99018  Eriogonum nudum var. nudum Cara Witte 2008-7-14 902 Humboldt White Oak Opening. Along Kinsey Ridge. 1257 Comment
  UC1198141  Eriogonum nudum var. nudum Joseph P. Tracy Jul 16 1930-Jul 19 1930 9040 Humboldt near Blake lookout (along summit of South Fork Mountain); South Fork Mountain 1737 Comment
  UC1222339  Eriogonum nudum var. nudum Joseph P. Tracy 1950-6-15 18801 Humboldt 7 mi n Harris (Jenk's Ranch); Mail Ridge, Jenk's Ranch Comment
  CAS-BOT-BC261722  Eriogonum nudum var. oblongifolium Henry M. Pollard 1946-9-1 s.n. Humboldt Near Wilson Creek, Orleans region Comment
  CAS-BOT-BC261726  Eriogonum nudum var. oblongifolium Doris K. Kildale 1925-6-28 813 Humboldt Kneeland Prairie 762 Comment
  SD42294  Eriogonum nudum var. pubiflorum Carl B. Wolf 1937-9-8 9300 Humboldt North Coast Range, Bull Creek-Petrolia Road, 11 Mi. W. of Redwood Highway 305 Comment
  SEINET11945862  Eriogonum nutans var. nutans Tiehm 1995-5-21 12092 Humboldt extreme S end of Bilk Creek Mts, just NW of Sod House near where the Quinn River crosses hwy 140 1326 Comment
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Jun 2 2019
  HSC35819  Eriophyllum lanatum Thomas W. Nelson, Jane P. Nelson, James Nelson 1975-6-20 1915 Humboldt Beside Hwy. 36, 1 mi. W of Grizzley Creek Comment
  HSC36636  Eriophyllum lanatum Thomas W. Nelson, Jane P. Nelson, James Nelson 1975-6-14 1906 Humboldt End of road to Pine Mtn. Comment
  HSC5592  Eriophyllum lanatum D. E. Anderson 1963-3-16 2384 Humboldt Scotia Bluffs Comment
  HSC71589  Eriophyllum lanatum M. A. Baker 1980-6-26 2394 Humboldt Near Sims Creek 610 Comment
  HSC73142  Eriophyllum lanatum M. A. Baker 1980-5-18 1332 Humboldt Near Black Mtn. 792 Comment
  CAS-BOT-BC301020  Eriophyllum lanatum var. achilleoides L. Constance 1933-5-21 E 34 Humboldt Cliffs along the South Fork of the Eel River, 1 mile north of Garberville Comment
  CAS-BOT-BC301179  Eriophyllum lanatum var. arachnoideum A. A. Heller 1923-7-9 13784 Humboldt Along the grade south of Eureka Comment
  HSC97629  Eriophyllum lanatum var. grandiflorum Cara Witte 2007-6-4 205 Humboldt Cold Spring. 0.5 mile S of Titlow Hill. 1386 Comment
  BLMAR818  Eriophyllum staechadifolium Madeleine Hassett 2017-9-9 818 Humboldt King Range, Windy point, down the old road/trail to Punta gorda Lighthouse 5 Comment
  CAS-BOT-BC301924  Eriophyllum staechadifolium L. R. Abrams 1916-7-18 6080 Humboldt Arcata to Trinidad Comment
  UC176463  Eriophyllum staechadifolium Joseph P. Tracy 1913-7-13 4361 Humboldt Patrick's Point Patrick's Point (bluffs facing ocean) 30 Comment
  JEPS61366  Erodium botrys Lincoln Constance 1934-5-27 701 Humboldt s end Dyerville Bridge; South Fork Eel River, Bull Creek Region Comment
  BLMAR46  Erodium botrys Brad Barr June, 1982 46 Humboldt King range, Johnny Jack Ridge Comment
  HSC97471  Erodium cicutarium C. Witte 2007-5-10 20 Humboldt Along National Forest 1 on Kinsey Ridge. Approximately 2 miles southeast of intersection with 5N04. Near cattleguard. 1368 Comment
  UC1198964  Erodium moschatum Joseph P. Tracy 1918-4-21 4885 Humboldt Eureka Northern Coast Ranges 0 Comment
  HSC53878  Erysimum capitatum var. capitatum Terry Griswold, Marvin Butler 1979-7-10 6359 Humboldt Near Board Camp Mtn., close to the town of Willow Creek 1372 Comment
  SEINET5342590  Erysimum menziesii J. Tracy 1901-4-14 1019 Humboldt Humboldt Bay. Comment
  UC492264  Erysimum perenne Joseph P. Tracy 1932-7-12 10451 Humboldt Trinity Summit Klamath Mountains 1524 Comment
  SEINET13694469 Image available Erythranthe alsinoides Joseph P. Tracy 1923-1 6258 Humboldt Kneeland prairie 762 Comment
  SEINET8371203  Erythranthe dentata L. F. Henderson 1933-5-27 15635 Humboldt Arcata-Redding road. Comment
  SJSU2542  Erythranthe dentata H. L. Buckalew 1962-6-26 Humboldt Prairie Cr Redwoods State Park Comment
  HSC38519  Erythronium californicum D. E. Anderson, J. P. Smith 1971-6-18 - 1081 Humboldt Horse Mtn. Comment
  UC666967  Erythronium californicum Joseph P. Tracy 1938-6-13 15896 Humboldt Horse Mountain 1432 Comment
  UC1197642  Erythronium revolutum Joseph P. Tracy 1918-5-28 4938 Humboldt High Prairie Northern Coast Ranges, Bald Mountain 1066 Comment
  HSC16769  Eschscholzia californica T. W. Beck 1963-4-27 38 Humboldt Humboldt Meridian, Camp Bauer, Korbel Comment
  JEPS51814  Eschscholzia californica W. L. Jepson 1932-8-8 16487 Humboldt Grasshopper Peak 914 Comment
  UC161568  Eschscholzia californica Joseph P. Tracy 1911-5-30 3210 Humboldt bluff near Bucksport; Northern Coast Region, region about Humboldt Bay 0 Comment
  UC552229  Euchiton sphaericus Joseph P. Tracy 1935-9-1 14752 Humboldt near Dyerville; Northern Coast Ranges 91 Comment
  RSA44413  Euchiton sphaericus H. M. Pollard 1948-7-27 s.n. Humboldt Near mouth of Red Cap Creek, near Orleans Comment
  BLMAR290  Euonymus occidentalis var. occidentalis Jennifer Anthony-Wheeler 2001-5-22 290 Humboldt Headwaters Forest Reserve, growing shaded streambank by ' babbits ridge ' 335 Comment
  SEINET10971171  Eupatorium occidentale Mary Susan Taylor 1980-6-11 Taylor 2844 Humboldt Gray Falls Campground, Six Rivers Natl Forest, on W side of Rd 6N56 to foot bridge, on N side of Hwy 299, ca. 2 mi NW of Burnt Ranch. 274 Comment
  UC1198972  Euphorbia crenulata Joseph P. Tracy 1925-5-17 6986 Humboldt near The South Fork; Northern Coast Ranges, Trinity River Valley 182 Comment
  UC183758  Euphorbia crenulata Joseph P. Tracy 1912-7-27 3882 Humboldt Kneeland Prairie; Northern Coast Range 762 Comment
  CDA20172  Euphorbia oblongata P. Haggard 2003-6-24 PDR 069699 Humboldt Northwestern California; Horse Mtn. 0 Comment
  UC302982  Euphorbia spathulata Joseph P. Tracy 1926-5-9 7455 Humboldt near Bridgeville; Northern Coast Ranges 762 Comment
  UC502956  Euphorbia spathulata Joseph P. Tracy 1929-5-5 8578 Humboldt Miranda Northern Coast Ranges, South Fork of Eel River (slopes and groves along South Fork of Eel River) 121 Comment
  HSC17559  Fallopia sachalinensis H. E. Parks, S. T. Parks Jul 1952 24448 Humboldt South of the Elk River Bridge on Hwy 10 Comment
  UC70822  Festuca altaica Joseph Burtt Davy and Walter C. Blasdale 1899-6-22 5746 Humboldt Trinity Summit Comment
  HSC100109  Festuca arundinacea T. L. Ackerman 1964-5-15 48 Humboldt Dunes west from Fairhaven sign Comment
  HSC74274  Festuca californica M. A. Baker 1980-5-23 1382 Humboldt Near Buck Mtn. 1524 Comment
  UC34071  Festuca californica J. P. Tracy 1901-6-23 1175 Humboldt immediate vicinity Eureka 0 Comment
  HSC9852  Festuca californica D. C. Juve 1964-5-16 36 Humboldt Campbell Cr. Ranger Station. Hwy. 96. Hillside above Trinity River Comment
  UCD65925  Festuca elmeri Al Murphy 1949-6-1 Humboldt Fort Baker. Comment
  UC525635  Festuca idahoensis Joseph P. Tracy 1930-7-10 8867 Humboldt Brannan Mountain North Coast Ranges 1219 Comment
  UC525638  Festuca roemeri Joseph P. Tracy 1933-7-25 12890 Humboldt Grouse Mountain North Coast Ranges 1524 Comment
  BLMAR400  Festuca rubra Jennifer Anthony-Wheeler 2005-6-29 400 Humboldt South Spit, salt marsh variant 6 Comment
  CAS-BOT-BC278960  Festuca rubra David D. Keck 1948-7-1 5970 Humboldt South side of Big Lagoon Comment
  POM126116  Festuca rubra Joseph P. Tracy 1906-6-24 2511 Humboldt South slope of Humboldt Hill, near Field's Landing. Region about Humboldt Bay. 0 Comment
  UCD66355  Festuca rubra H. S. Yates 1936-6-16 5672 Humboldt 1 mile N.E. of Samoa. 3 Comment
  SEINET3827552 Image available Festuca subuliflora T. R. Van Devender, R. K. Van Devender 1990-1 90 -102 Humboldt Cal-Barrel Road in Redwood National Forest; dense old-growth redwood forest. Comment
  UCD66489  Festuca subuliflora R. Tofsrud 1949-7-1 Humboldt On road from Scotia to Capetown. Comment
  UCD66493  Festuca subuliflora A. A. Beetle; G. L. Stebbins Jr 1942-6-1 3451 Humboldt 4 miles north of Orleans on road to Somesbar, wooded banks of Klamath River. Comment
  HSC21492  Foeniculum vulgare Wm. F. Bowman 1968-11-9 Humboldt Along E edge of Humboldt Bay, along elevated area near railroad tracks. Comment
  HSC40975  Fragaria X ananassa Linda M. Barker 1976-6-14 1590 Humboldt 3 mi. W of Arcata Comment
  UC1198727  Fragaria chiloensis J. P. Tracy 1900-6-5 851 Humboldt immediate vicinity of Eureka (at Bucksport) 0 Comment
  HSC18611  Fragaria vesca J. C. Reppas 1963-4-11 37 Humboldt 820 Fickle Hill Rd. Comment
  UC183556  Fragaria vesca Joseph P. Tracy 1913-6-25 4340 Humboldt opposite Buck Mountain (Dinsmore's Ranch, in Valley of Van Duzen River); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  HSC61635  Fragaria virginiana Ruby Van Deventer 1959-6-20 Humboldt Humboldt-Del Norte Co. line, Onion Lake 1067 Comment
  UCD112747  Frangula californica Carl B. Wolf 1934-6-30 5842 Humboldt back of Shelter Cove. Comment
  HSC72613  Frangula californica subsp. occidentalis J. P. Smith 1977-7-3 9261 Humboldt Six Rivers National Forest. FS Rd. 13N01, 3 mi. from its junction with Hwy. 36 549 Comment
  HSC12313  Frangula purshiana Wendell Wood 1970-9-22 296 Humboldt McKinleyville, E end of Chateau Way 107 Comment
  SBBG4630  Frangula purshiana subsp. purshiana M. J. Cody 1938-7-10 Humboldt near Trinidad Comment
  UC249521  Fraxinus latifolia Joseph P. Tracy 1922-5-29 6060 Humboldt South Yager Creek Valley Northern Coast Ranges 762 Comment
  UC1541354  Fritillaria W. K. Parks July 1933 1399 Humboldt South Fork Mountain Comment
  HSC15550  Fritillaria affinis Greg Bos 1965-5-15 275 Humboldt Berry Summit near Hwy. 299 793 Comment
  UC1197627  Fritillaria purdyi Joseph P. Tracy 1938-6-13 15918 Humboldt Grouse Mountain, at Cold Springs Cold Springs; Grouse Mountain, Cold Springs 1432 Comment
  UC902105  Fumaria officinalis Joseph P. Tracy 1949-4-1 18277 Humboldt Eureka; Northern Coast Ranges Comment
  HSC39421  Galium ambiguum subsp. siskiyouense Thomas W. Nelson 1976-6-14 2707 Humboldt S of Lassic Peak 1524 Comment
  HSC102052  Galium aparine M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-13 957 Humboldt Forest edge surrounding Patterson Meadows 1566 Comment
  HSC99827  Galium aparine Jimerson, Pageau 1979-6-13 541 Humboldt Near Slate Creek Butte, close to the town of Orleans 549 Comment
  HSC19781  Galium aparine B. D. Rogers, William J. Ferlatte 1966-6-8 2087 Humboldt Forest Glen Campground Comment
  HSC97949  Galium bolanderi Cara Witte 2007-6-26 352 Humboldt Horse Mountain Botanical Area. Junction of 6N36 and 6N36A. 1388 Comment
  HSC39597  Galium grayanum var. grayanum Thomas W. Nelson, Jane P. Nelson 1976-7-1 2917 Humboldt Along N side of Mt. Lassic (Signal Peak) 1738 Comment
  JEPS52823  Galium muricatum Lauramay T. Dempster and G. L. Stebbins 1963-7-9 3852 Humboldt 1/2 mi e Dinsmores (on Hwy 36) 731 Comment
  JEPS52828  Galium muricatum L. T. Dempster and G. L. Stebbins 1963-7-10 3859 Humboldt along creek w junction with Eel River (steep ne-facing slope); Bull Creek 60 Comment
  JEPS52841  Galium muricatum Lauramay T. Dempster 1963-9-3 3920 Humboldt Hwy 299 just w Boise Creek (transmission line clearing) 304 Comment
  UC1196101  Galium parisiense Joseph P. Tracy 1924-8-10 6801 Humboldt on river bar near Strong's Station (10 mi e of Carlotta); Northern Coast Ranges 60 Comment
  UC176990  Galium parisiense Joseph P. Tracy 1913-4-27 4042 Humboldt Eureka Comment
  UC196077  Galium trifidum Joseph P. Tracy 1900-9-3 941 Humboldt Eureka Northern Coast Region 0 Comment
  UC1192013  Galium trifidum Malcolm A. Nobs and S. Galen Smith 1949-8-3 1160 Humboldt 1 mi s Fields Landing (borders of irrigation ditch); Eel River Valley Comment
  CAS-BOT-BC303392  Gamochaeta ustulata Joseph P. Tracy 1936-8-23 15163 Humboldt Carlotta 60 Comment
  CAS-BOT-BC303388  Gamochaeta ustulata Joseph P. Tracy 1936-8-1 15057 Humboldt Canyon Creek, 6 miles SE of Blue Lake 365 Comment
  CAS-BOT-BC303396  Gamochaeta ustulata M. S. Jussel 1931-5-2 s.n. Humboldt Near Garberville Comment
  HSC5689  Gamochaeta ustulata David Adams 1960-7-15 Humboldt Near Fort Humboldt monument, Eureka 15 Comment
  HSC72784  Garrya buxifolia M. A. Baker 1980-7-11 2798 Humboldt Near Red Mtn. 1341 Comment
  HSC40406  Garrya elliptica Linda M. Barker 1976-3-22 1339 Humboldt 3 mi. W of Arcata Comment
  SEINET3890980  Garrya elliptica C. Davidson 2011-1-26 11826 Humboldt Moonstone Beach, north of McKinleyville.; 0 Comment
  UC154057  Garrya elliptica J. P. Tracy 1901-2-22 993 Humboldt immediate vicinity Eureka 0 Comment
  UC634769  Garrya elliptica H. L. Mason 1932-7-21 7105 Humboldt Big Lagoon Comment
  SEINET12137511  Garrya elliptica M. S. Taylor 1982-1 5181 Humboldt Samoa, under bridge, ca 1 mi NW of Eureka Comment
  CAS-BOT-BC182172  Garrya fremontii Doris K. Kildale 1927-2-20 2957 Humboldt McDowell Buttes near Kneeland 914 Comment
  UC1196892  Garrya fremontii Joseph P. Tracy 1939-8-16 16408 Humboldt Horse Mountain 1432 Comment
  UCD121142  Garrya fremontii George W. Jordan 1922-11-18 s.n. Humboldt Showers Pass. Comment
  UCD39984  Garrya fremontii Rodney Gale Myatt 1971-9-21 1189 Humboldt Near Orleans, northeast of Hoopa Reservation, and along Klamath River. 426 Comment
  UCSB72517  Garrya fremontii Moseley, Maynard 1952-8-21 Humboldt Along western valley wall of Willow Creek, mostly within Hoppe Indian Reservation, upstream from Willow Village Comment
  CAS-BOT-BC282615  Gastridium phleoides Henry M. Pollard 1944-9-17 s.n. Humboldt Near Orleans Comment
  UC1103734  Gastridium ventricosum Joseph P. Tracy 1913-7-20 4380 Humboldt at Berry's ranch Redwood Creek; Northern Coast Ranges, Redwood Creek 304 Comment
  JEPS66600  Gaultheria ovatifolia Joseph P. Tracy 1926-6-27 7670 Humboldt Horse Mountain; Northern Coast Ranges, Horse Mountain 1463 Comment
  UC562736  Gaultheria ovatifolia Joseph P. Tracy Jul 16 1930-Jul 19 1930 9022 Humboldt near McKay Camp (South Fork Mountain); Northern Coast Ranges, South Fork Mountain 1676 Comment
  CAS-BOT-BC58911  Gaultheria shallon L. R. Abrams 1916-7-11 6010 Humboldt Mouth of Grizzly Creek on Van Duzor River Comment
  CAS-BOT-BC58916  Gaultheria shallon Doris K. Kildale; J. W. Gillespie 1929-6-25 8392 Humboldt Pine's Pasture, Eureka Comment
  HSC73457  Gaultheria shallon Grunert 38 Humboldt Jolly Giant Creek, Arcata city limit, on Jolly Giant Rd. near HSU Comment
  HSC54658  Gayophytum diffusum subsp. parviflorum Overton, Butler 1979-7-25 9877 Humboldt Near Sims Mtn., close to the town of Willow Creek 1295 Comment
  HSC54756  Gayophytum diffusum subsp. parviflorum G. L. Clifton, Griswold 1979-7-26 10293 Humboldt Near Salmon Mtn., close to the town of Forks of Salmon 1935 Comment
  POM247154  Gayophytum diffusum subsp. parviflorum Joseph P. Tracy 1933-7-26 12919 Humboldt Grouse Mountain; North Coast Ranges 1524 Comment
  UC422799  Gayophytum heterozygum Chesnut and Drew Humboldt Comment
  HSC28184  Genista monspessulana Richard Curtis 1973-9-27 20 Humboldt Bayside cutoff between Eureka and Arcata. Comment
  UC562300  Gentiana affinis var. ovata Joseph P. Tracy 1933-10-1 13078 Humboldt hillsides Big Lagoon 91 Comment
  UC213321  Gentiana plurisetosa Joseph P. Tracy 1919-9-22 5274 Humboldt Trinity Summit Northern Coast Ranges (in meadows) 1828 Comment
  POM318969  Gentiana sceptrum Patricia Wilder 1968-8-21 4390 Humboldt Bog in Big Lagoon Park, just west of Hwy 101; Mt. Range: Coast range; Drainage Area: Big Lagoon to Pacific Ocean. 2 Comment
  HSC23999  Geranium bicknellii Tim Baroni 1971-7-6 125 Humboldt 15 mi. S of Ferndale on Mattole Rd. Comment
  UC1197396  Geranium carolinianum Joseph P. Tracy 1929-5-5 8558 Humboldt Miranda, along South Fork of Eel River Northern Coast Ranges, South Fork of Eel River 121 Comment
  UC169886  Geranium dissectum Harley P. Chandler Jun 1901 1420 Humboldt Klamath River North Coast Ranges Comment
  RSA0028457  Geranium dissectum H. E. Parks, S. T. Parks 1938-04 24118 Humboldt Spruce Cove, Trinidad. 61 Comment
  CAS-BOT-BC457032  Geum macrophyllum Joseph P. Tracy 1932-7-14 10540 Humboldt Corral Prairie, Trinity Summit 1524 Comment
  HSC23678  Gilia capitata Tim Baroni 1971-7-5 88 Humboldt 8 mi. E of Petrolia Comment
  HSC95436  Gilia capitata subsp. pacifica Gordon Leppig 2003-6-25 1989 Humboldt E side headwaters of Brushy Creek 800 Comment
  UC169033  Githopsis specularioides J. P. Tracy 1903-5-23 1906 Humboldt Alder Point Eel River 152 Comment
  POM208979  Githopsis specularioides Lincoln Constance 1934-6-15 819 Humboldt Grasshopper Pk.; Bull Creek watershed, Humboldt Redwood Park. 976 Comment
  POM319204  Glaux maritima Patricia Wilder 1968-8-21 4412 Humboldt Northern Coastal arm of Humboldt Bay, NW of Samoa, on E side of train tracks. 3 Comment
  UC1409059  Glebionis segetum Robert F. Thorne and P. Everett 1965-8-8 35270 Humboldt n edge of Eureka (e of Hwy. 101) 4 Comment
  HSC46969  Glehnia littoralis subsp. leiocarpa J. P. Smith, Thomas W. Nelson 1977-6-30 9211 Humboldt Samoa Peninsula just E of the drag strip 6 Comment
  JEPS158  Glehnia littoralis subsp. leiocarpa unknown 1925-7-29 109 Humboldt Samoa Comment
  POM318534  Glehnia littoralis subsp. leiocarpa Patricia Wilder 1968-8-22 4418 Humboldt County campground on beach west of Ferndale off Centerville Road. 8 Comment
  SJSU2516  Glehnia littoralis subsp. leiocarpa H. L. Buckalew 1962-6-18 Humboldt Gold Beach at ocean near Prairie Cr Redwoods State Park Comment
  HSC90679  Glyceria declinata Gail Newton 1982-6-10 3591 Humboldt Elk River Wildlife Area, Eureka Comment
  SEINET267676 Image available Glyceria fluitans Gordon Leppig 1995-4-6 243 Humboldt Arcata Alder Grove Pond. 12 Comment
  RSA42036  Gnaphalium chilense H. C. Cantelow 1936-8-29 1566 Humboldt 1 mile off Riv. [High.?] S. Fork Eel River Bridge, 17 miles N of Garberville Comment
  CAS-BOT-BC302539  Gnaphalium palustre H. E. Parks; S. T. Parks 1937-7-1 24026 Humboldt Spruce Cove, Trinidad Comment
  SBBG26798  Gnaphalium palustre H. E. and S. T. Parks -Jul-1937 24026 Humboldt Spruce Cove, Trinidad Comment
  HSC45235  Goodyera oblongifolia Thomas W. Nelson, Jane P. Nelson 1977-7-1 3563 Humboldt N side of ridge between Bear Creek & Blanket Creek 1524 Comment
  UC1222817  Gratiola ebracteata Joseph P. Tracy 1951-6-21 Humboldt bed of former Goose Lake (Hydesville, back of the Everett Beck house (formerly George Gray's)); bed of former Goose Lake Comment
  JEPS25052  Gratiola neglecta Joseph P. Tracy 1920-8-15 5378 Humboldt Klamath River Bluff Creek; Northern Coast Ranges, Klamath River at Bluff Creek 152 Comment
  RSA125369  Grindelia hirsutula Peter H. Raven, Richard Snow 1958-7-21 13659 Humboldt Cape Mendocino Comment
  UC1173679  Grindelia hirsutula Joseph P. Tracy 1939-8-6 16397 Humboldt Big Lagoon 3 Comment
  UC1541451  Grindelia hirsutula H. E. and S. T. Parks 1930-9-14 773 Humboldt n shore Big Lagoon Comment
  CHSC69498  Grindelia stricta var. platyphylla Vernon Oswald; Lowell Ahart 1997-9-4 8845 Humboldt North Coast Region. Big Lagoon County Park at the southwest edge of Big Lagoon. 3 Comment
  POM359112  Grindelia stricta var. platyphylla M. B. Dunkle 1936-8-18 4813 Humboldt South of Eureka. 91 Comment
  HSC56354  Hackelia bella Griswold, Butler 1979-7-10 6325 Humboldt Near Board Camp Mtn., close to the town of Willow Creek 1372 Comment
  HSC97938  Hackelia californica Cara Witte 2007-5-31 143 Humboldt Off National Forest 1. Near Board Camp Mountain. Approximately 4 miles south of Brays Opening and 1/2 mile west of road. 1510 Comment
  RSA167310  Hackelia californica Joseph P. Tracy 1948-8-15 18154 Humboldt Trinity Summit, on ridge 2 miles east of Grove s Prairie. 1524 Comment
  HSC74473  Hackelia micrantha Gail Newton 1980-7-23 1744 Humboldt Near Packsaddle Ridge 1463 Comment
  UC525561  Hackelia micrantha Joseph P. Tracy 1932-7-16 10617 Humboldt Corral Prairie; Klamath Mountains, Trinity Summit 1524 Comment
  JEPS79901  Hackelia setosa Joseph P. Tracy 1937-7-24 15510 Humboldt 2 mi se of Devil's Hole; Trinity Summit 1584 Comment
  HSC57955  Hastingsia alba G. L. Clifton, Griswold 1979-7-31 11642 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1719 Comment
  HSC61032  Hastingsia alba T. Jimerson, J. Pageau 1979-8-10 731 Humboldt Near Tish Tang A Tang Ridge, close to the town of Hoopa 1464 Comment
  POM169139  Hastingsia alba Jos Burtt Davy 5855 Humboldt Near Trinity Summit [Humboldt-Trinity County line] Comment
  CAS-BOT-BC158026  Hedera helix Joseph P. Tracy 1939-1-22 16185 Humboldt Blue Slide on Van Duzen River 91 Comment
  HSC56405  Helenium bigelovii Griswold, Butler 1979-7-11 7011 Humboldt Near Snow Camp Lake, close to the town of Willow Creek. 1393 Comment
  JEPS109581  Helenium bolanderi Dean W. Taylor 2002-9-12 18341 Humboldt Lake Prairie, remnant of the original bog vegetation on the eastern end of the lake 1097 Comment
  CAS-BOT-BC306871  Helenium bolanderi L. R. Abrams; R. Bacigalupi 1922-6-25 8261 Humboldt Between Trinidad and Big Lagoon Comment
  RSA695692  Helenium puberulum J. R. Bruff 1937-8-17 943 Humboldt Richardson Grove. Comment
  UC525571  Heliotropium curassavicum Joseph P. Tracy 1927-6-26 8210 Humboldt Stone Lagoon Northern Coast Region, Stone Lagoon 6 Comment
  UC1565811  Hemizonella minima R. Spellenberg 1990-7-9 10228 Humboldt on USFS Rd 1 20.5 mi s Calif. Hwy. 299 and Berry Summit (14 air mi sw of Burnt Ranch, extreme e edge of county); Pilot Ridge 1371 Comment
  POM160904  Hemizonia clevelandii Joseph P. Tracy 1925-7-12 7200 Humboldt Trinity River Valley, near the South Fork. Northern Coast Ranges. 305 Comment
  CAS-BOT-BC306114  Hemizonia congesta subsp. clevelandii L. R. Abrams 1916-7-11 5975 Humboldt Dobbin [Dobbyn] Creek Comment
  CAS-BOT-BC309984  Hemizonia congesta subsp. tracyi M. S. Jussel 1931-5-2 s.n. Humboldt 6 miles from Garberville Comment
  CAS-BOT-BC309988  Hemizonia congesta subsp. tracyi Joseph P. Tracy 1932-8-21 10364 Humboldt Northern Coast Ranges. Three Cabins; on lower western foothills of Chaparral Mountain 457 Comment
  CAS-BOT-BC309992  Hemizonia congesta subsp. tracyi Doris K. Kildale 1925-10-1 1697 Humboldt Kneeland Prairie Comment
  CAS-BOT-BC309996  Hemizonia congesta subsp. tracyi L. R. Abrams 1916-7-11 6001 Humboldt Between Blocksberg [Blocksburg] and Bridgeville Comment
  CAS-BOT-BC310000  Hemizonia congesta subsp. tracyi Alice Eastwood; John Thomas Howell 1937-6-23 4805 Humboldt Little Van Duzen River Comment
  HSC32921  Hemizonia congesta subsp. tracyi Thomas W. Nelson, James Nelson 1973-5-28 967 Humboldt McKeown Ranch N of Dinsmore Comment
  JEPS12587  Hemizonia congesta subsp. tracyi Joseph P. Tracy 1937-7-19 15456 Humboldt lower foothills of its nw slope Buck Mountain 914 Comment
  UC1281660  Hemizonia congesta subsp. tracyi Richard Spellenberg 1965-6-14 1129 Humboldt 6 mi se Kneeland Comment
  RSA259569  Hemizonia tracyi Thomas W. Nelson, Jane, James Nelson 1975-6-21 1950 Humboldt Hwy 36, 5 miles east of Bridgeville Comment
Read comments
Jan 3 2011
  UC180240  Heracleum lanatum Joseph P. Tracy 1914-6-14 4511 Humboldt Carlotta Northern Coast Ranges, Carlotta 60 Comment
  HSC48812  Heracleum maximum Brad Klipfel 1973-7-31 226 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  UC1212422  Hesperolinon micranthum Joseph P. Tracy 1925-7-12 7202 Humboldt hillsides w of Trinity River Valley (near the South Fork); Northern Coast Ranges 304 Comment
  HSC98086  Heterocodon rariflorum Cara Witte 2007-7-11 486 Humboldt Cold Spring. 1/2 mile south of Titlow Hill. 1396 Comment
  JEPS11793  Heterocodon rariflorum W. L. Jepson 1932-7-24 16394 Humboldt Garberville; Tooey Ranch Comment
  RSA249393  Heterocodon rariflorum D. E. Anderson, Thomas W. Nelson, S. Dowty 1974-6-17 5709 Humboldt McKeown Ranch N of Dinsmore. Comment
  CAS-BOT-BC423448  Heuchera micrantha var. macropetala Freed Hoffman 1950-7-11 4009 Humboldt Northeastern Humboldt county. On serpentine, 16.1 mi. above and north of Klamath River Road, along road to Cedar camp. 914 Comment
  HSC56128  Heuchera rubescens G. L. Clifton, Griswold 1979-8-1 11931 Humboldt Near Mill Creek Lakes, close to the town of Hoopa. 1692 Comment
  HSC44547  Hieracium albiflorum Brad Klipfel 1973-7-15 166 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC98820  Hieracium albiflorum Cara Witte 2008-7-30 963 Humboldt Spike Buck Mountain. Forest Service Road 5N18. 1/2 mile from intersection with National Forest 1. 1589 Comment
  UCD133133  Hieracium albiflorum Linda M. Barker 1976-6-14 1591 Humboldt 3 miles west of Arcata. Comment
  HSC74490  Hieracium greenei M. A. Baker 1980-7-24 3209 Humboldt Near Orleans Mtn. 1625 Comment
  HSC10134  Holcus lanatus R. D. Zortman 1963-4-14 27 Humboldt 5.0 mi. NE of Arcata, off Warren Creek Road. 91 Comment
  HSC10139  Holcus lanatus W. F. Nickel 1965-4-28 Humboldt On Humboldt State Campus behind biological science building, near baseball field. Comment
  HSC58657  Holcus lanatus G. L. Clifton 1979-7-31 11851 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  HSC73250  Holodiscus discolor M. A. Baker 1980-5-18 1317 Humboldt Near Black Mtn. 1006 Comment
  CAS-BOT-BC281264  Hordeum brachyantherum subsp. brachyantherum Joseph P. Tracy 1932-7-10 10389 Humboldt Klamath Mountains, Trinity Summit. At Corral Prairie 1524 Comment
  HSC10192  Hordeum jubatum J. P. Tracy 1927-7-16 8249 Humboldt Mouth of Elk River. 3 Comment
  BLMAR21  Hordeum murinum subsp. leporinum Brad Barr June, 1982 21 Humboldt King range, Spanish flat, smith cabin Comment
  HSC37573  Hordeum vulgare J. D. Ackerman 1975-6-10 460 Humboldt 1 mi. N of Samoa Blvd. and Samoa bridge turnoff intersection. S of Manila. Comment
  HSC96270  Horkelia tridentata var. flavescens Wanda Naylor, Laurel Goldsmith 2005-6-24 15 Humboldt S of Grouse Mountain on NF1 1595 Comment
  HSC102016  Hosackia oblongifolia var. oblongifolia M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-12 917 Humboldt Rustic Camp, northwest of Patterson Meadows 1512 Comment
  HSC99253  Hosackia oblongifolia var. oblongifolia Jimerson, J. Pageau 1979-8-10 717 Humboldt Near Tish Tang A Tang Ridge, close to the town of Hoopa 1464 Comment
  UC1101448  Hydrocotyle ranunculoides Malcolm A. Nobs and S. Galen Smith 1949-8-9 1244 Humboldt Clam Beach Comment
  UC1239767  Hydrophyllum tenuipes Joseph P. Tracy 1931-5-31 9535 Humboldt Lawrence Creek Northern Coast Ranges (at crossing of Kneeland Road) 457 Comment
  HSC74685  Hypericum anagalloides Gail Newton 1981-8-7 2457 Humboldt Near Board Camp Mtn. 1478 Comment
  CAS-BOT-BC400792  Hypericum anagalloides Henry M. Pollard 1948-7-18 s.n. Humboldt Area near Orleans Comment
  POM203702  Hypericum formosum var. scouleri I. L. Wiggins 1932-7-18 5886 Humboldt Boggy meadow between Arcata and Bayside Comment
  HSC57100  Hypericum perforatum Overton, Butler 1979-7-25 9832 Humboldt Near Ammon Creek, close to the town of Willow Creek. 671 Comment
  HSC58239  Hypericum perforatum G. L. Clifton, Griswold 1979-8-2 12403 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  UC668259  Hypericum perforatum Joseph P. Tracy 1937-4-3 15244 Humboldt Trinity R. Valley at Willow Creek; Trinity R. Valley 152 Comment
  HSC27781  Hypericum perforatum J. D. Ackerman, A. M. Montalvo 1973-6-17 57 Humboldt 1 mi. W of Redwood Creek along Hwy. 299 Comment
  UC1199473  Hypochaeris glabra Joseph P. Tracy 1936-5-30 14835 Humboldt near Samoa; Humboldt Bay 6 Comment
  HSC39569  Hypochaeris glabra D. E. Anderson, J. P. Smith 1971-6-18 1074 Humboldt Chezem Rd., about 3 mi. E of bridge over Redwood Creek Comment
  HSC60062  Hypochaeris glabra M. A. Baker 1978-5-6 491 Humboldt 2 km. W of Weitchpec along Klamath River. Comment
  UC1069673  Hypochaeris radicata H. L. Person 1932-7-16 L.H. 25 Humboldt Highway n Trinidad; Rock Point Quad. Comment
  HSC100166  Ilex aquifolium J. P. Smith 2010-2-27 12708 Humboldt Azalea State Reserve SE of McKinleyville. 50 Comment
  CAS-BOT-BC206847  Iliamna latibracteata C. B. Wolf 1934-7-3 5909 Humboldt 3 miles north of Orick on Redwood Highway, Davison's Ranch on Prairie Creek 60 Comment
  HSC35707  Iliamna latibracteata Thomas W. Nelson, B. Reinhardt 1975-7-30 2091 Humboldt Grouse Creek side of Last Chance Ridge. Comment
  POM257407  Iliamna latibracteata H. E. Parks, S. T. Parks 1935-06 5543 Humboldt East side of Prairie Creek, north of Orick 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
  CAS-BOT-BC206839  Iliamna latibracteata W. R. Dudley 1899-1-1 s.n. Humboldt Near Davidson's, Prairie Creek Comment
  HSC13895  Iris douglasiana N. D. Dennis 1965-5-5 51 Humboldt 1 mi. N of Trinidad on Hwy. 101 Comment
  SEINET4170691  Iris douglasiana Unknown 1924-5-25 Humboldt Big Lagoon. 8 Comment
  UC1196393  Iris douglasiana Joseph P. Tracy 1924-8-3 6762 Humboldt Big Lagoon; Northern Coast Region 6 Comment
  HSC89546  Iris douglasiana M. Roantree 1985-5-24 63 Humboldt E side of Trinidad Head Comment
  RSA70604  Iris douglasiana Frank W. Peirson 1923-7-12 3692 Humboldt About 5 miles north of Orick Comment
  UC667118  Iris douglasiana Joseph P. Tracy 1939-6-17 16311 Humboldt vicinity Carlotta 30 Comment
  UC1193099  Iris longipetala P. Zinke 1950-10-11 188 Humboldt 4 mi se Punta Gorda; Lake Ridge 243 Comment
  HSC100502  Iris macrosiphon Carl C. Marshall Jun 1885 28 Humboldt In the redwoods. Comment
  UC1196390  Iris macrosiphon Joseph P. Tracy 1940-5-17 16547 Humboldt McClellan Mt. 762 Comment
  BLMAR542  Iris purdyi Jennifer Wheeler 2009-6-23 542 Humboldt King range, On Paradise Ridge road Comment
  SD112455  Iris purdyi darley F. Howe 1972-5-6 4832 Humboldt 1.5 miles north of Phillipsville. Comment
  HSC65229  Iris tenax subsp. klamathensis T. Jimerson, J. Pageau 1979-5-1 444 Humboldt 3.6 mi. N of Orleans on FS Rd. 15N01 Comment
  RSA136372  Iris tenax subsp. klamathensis Lee W. Lenz 1953-5-17 18317 Humboldt 1 mile below Somes Bar on Klamath River 180 Comment
  HSC70745  Iris tenuissima R. York 1980-5-17 519 Humboldt Near Le Perron Peak 792 Comment
  RSA246913  Isolepis cernua Robert F. Thorne, Percy C. Everett 1965-8-7 35183 Humboldt Big Lagoon. 2 Comment
  CAS-BOT-BC101964  Juglans hindsii J. W. Blankinship 1928-7-12 s.n. Humboldt Clear Lake woods, Mouth of Kelsey Cr. Comment
  HSC38832  Juncus bolanderi R. Sutherland 1976-8-13 813876 Humboldt Whittemaore Grove at edge of forest 213 Comment
  HSC39770  Juncus bufonius Peter Sorensen 1976-6-11 Humboldt King Salmon Comment
  HSC13993  Juncus bufonius J. E. Lankila 1962-4-14 6 Humboldt W bank of Eel River across from Shively, 0.25 mi. N of Bear Creek Comment
  JEPS66922  Juncus bufonius Lincoln Constance 1934-6-12 862 Humboldt Dyerville, Bull Cr. road and n bank of South Fork Eel River South Fork Eel River, Bull Creek Region Comment
  UC1152113  Juncus capitatus Joseph P. Tracy 1948-6-13 18045 Humboldt at the former Will Perry Place Dobbyn Creek 152 Comment
  CHSC105147  Juncus covillei Peter F. Zika 2008-10-19 24231 Humboldt Uncommon in damp ditches, full sun, E side of Route 101, near Exit 728 for Trinidad Beach 110 Comment
  HSC69861  Juncus covillei Thomas W. Nelson, Ken Hindley 1978-5-28 4084 Humboldt McKeown Ranch, N of Dinsmore 762 Comment
  UC1152110  Juncus covillei Joseph P. Tracy 1934-7-14 13401 Humboldt near Blue Lake (along Mad River); Mad River 15 Comment
  HSC98006  Juncus covillei Cara Witte 2007-7-12 516 Humboldt Forest Service Road 5N10. 2 miles east of intersection with National Forest 1. 1339 Comment
  HSC98855  Juncus covillei Cara Witte 2008-7-30 972 Humboldt Forest Service Road 5N04. 1/4 mile east of intersection with Forest Service Road 4N70. 1583 Comment
  POM170510  Juncus effusus subsp. pacificus Le Roy Abrams 1916-7-18 6102 Humboldt Arcata to Trinidad. Comment
  SEINET3878826  Juncus effusus var. pacificus Thomas Nelson 1974-7-20 1695 Humboldt Mckeown Ranch north of Dinsmore.; 0 Comment
  HSC14018  Juncus ensifolius H. E. Parks Jun 1934 5274 Humboldt Spruce Cove, Trinidad Comment
  RSA246804  Juncus ensifolius Robert F. Thorne, Percy C. Everett 1965-8-7 35174 Humboldt Big Lagoon. 2 Comment
  UC1152094  Juncus ensifolius Joseph P. Tracy 1950-7-16 8980 Humboldt near McKay Camp (close to Trinity County line); South Fork Mountain 1676 Comment
  UCD141540  Juncus ensifolius Joseph P. Tracy 1937-8-7 15619 Humboldt Bald Mountain; east of Korbel. About a mile north of Murphy meadow. Comment
  HSC39050  Juncus lescurii Linda M. Barker 1976-6-22 1620 Humboldt 3 mi. W of Arcata Comment
  HSC90770  Juncus lescurii Gail Newton 1982-6-10 3608 Humboldt Elk River Wildlife Area, Eureka Comment
  HSC58113  Juncus mertensianus G. L. Clifton, Griswold 1979-8-1 12069 Humboldt Near N Trinity Mtn., close to the town of Hoopa 1799 Comment
  HSC99530  Juncus mertensianus K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-28 194 Humboldt Near North Trinity Mtn, along trail to Water Dog Lakes, Six Rivers National Forest. 1738 Comment
  HSC102129  Juncus parryi M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 1033 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  UC1133717  Juncus patens H. S. Yates 1936-6-23 5858 Humboldt 2 mi se mouth of Mad River; Eureka Quad. 30 Comment
  UC183961  Juncus patens Joseph P. Tracy 1912-7-26 3848 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  BLMAR324  Juncus patens Jennifer Wheeler 2002-8-9 324 Humboldt Lost Coast Headland, Guthrie creek edge along Guthrie creek trail 6 Comment
  HSC79500  Juncus patens Kenneth Clark 1980-6-14 682 Humboldt Shelter Cove, N Fork of Dead Man's Gulch. 122 Comment
  UC201996  Juncus saximontanus Joseph P. Tracy 1918-7-5 5027 Humboldt White Thorn Valley Northern Coast Ranges 304 Comment
Read comments
Dec 13 2006
  SEINET8567059 Image available Juncus xiphioides John Thomas Howell 1936-8-28 12882 Humboldt 4.5 miles from Dinsmores on road to Bridgeville Comment
  NY21391  Juniperus communis F. W. Hunnewell 1925-7-22 9707 Humboldt This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  HSC82411  Kalmia polifolia Thomas W. Nelson 1979-7-11 5018 Humboldt N Trinity Mtn. and ridge to E. 1829 Comment
  HSC20979  Keckiella corymbosa John Warner Hosking 1968-10-10 Humboldt Hwy. 299, 30 mi. W of Willow Creek Comment
  UC41735  Keckiella corymbosa Chesnut and Drew 1888-7-10 Humboldt Jarnigans's Comment
  UC585629  Keckiella corymbosa Joseph P. Tracy 1937-7-11 15422 Humboldt vicinity Garberville 121 Comment
  JEPS10900  Keckiella lemmonii Joseph P. Tracy 1930-7-25 8883 Humboldt Willow Creek; Trinity River Valley 152 Comment
  JEPS10903  Keckiella lemmonii Lincoln Constance 1934-6-27 937 Humboldt Dyerville South Fork Eel River, Bull Creek Region (near Eel River junction with South Fork, on s side of Eel River, 0.5 mi nw of South Fork P.O. and railroad station, end of railroad bridge) Comment
  NY790332  Keckiella lemmonii F. W. Pennell 1940-7-7 26089 Humboldt Route 299. South of Willow Creek. 182.9 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
  HSC102575  Kelloggia galioides M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-29 1562 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1579 Comment
  JEPS12480  Kelloggia galioides Joseph P. Tracy 1930-7-19 9081 Humboldt near McKay Camp; South Fork Mountain 1676 Comment
  HSC62771  Kniphofia uvaria M. Dean Griswold Jr. 1979-5-29 74 Humboldt E side of Alliance Rd. Comment
  HSC95250  Kniphofia uvaria Gordon Leppig, Sylvia Leppig 2000-4-9 1287 Humboldt Humboldt Marsh and Wildlife Refuge, SE corner of Klopp Lake Dike 1 Comment
  UC552314  Lactuca biennis Joseph P. Tracy 1934-8-14 13583 Humboldt near Myers; North Coast Ranges 60 Comment
  UC1051592  Lactuca saligna Joseph P. Tracy 1947-9-14 17932 Humboldt Kneeland Prairie 762 Comment
  CAS-BOT-BC349841  Lactuca tatarica subsp. pulchella Henry M. Pollard 1946-9-2 s.n. Humboldt Orleans Mt. 1524 Comment
  UCD125067  Lamium purpureum Joseph P. Tracy 1945-5-10 17508 Humboldt Eureka. 45 Comment
  HSC34652  Lamium purpureum A. M. Montalvo 1975-4-10 205 Humboldt Vacant lot bordering HSU campus between Union St. and A St. 15 Comment
  HSC31138  Lapsana communis J. O. Sawyer 1970-6-24 2269 Humboldt S of Mill Creek Gap, FS Rd. 10N02 1433 Comment
  HSC62179  Lapsana communis J. M. DiTomaso 1980-11-4 1997 Humboldt SE of junction of 11th St. and Hwy. 101., Arcata Comment
  RSA170204  Lapsana communis Joseph P. Tracy 1944-7-3 17482 Humboldt Graham's Peach Orchard. Trinity River Valley at Willow Creek. 152 Comment
  RSA46394  Lapsana communis Charles L. Pollard 1946-8-26 s.n. Humboldt Between Orleans and Camp Creek, Klamath River Canyon. Comment
  CAS-BOT-BC352933  Lasthenia glaberrima Joseph P. Tracy; Harold E. Parks 1935-6-16 11274 Humboldt Buck Mt. Lower N.W. slopes 792 Comment
  UC552256  Lasthenia glaberrima Harold E. Parks and Joseph P. Tracy 1935-6-16 11274 Humboldt lower nw slopes Buck Mt. 792 Comment
  HSC86123  Lathyrus glandulosus S. L. Broich 1981-6-9 1146 Humboldt 8.5 km NE of Freshwater-Kneeland Rd. on the road to Maple Creek Comment
Read comments
Nov 6 2012
  UC175637  Lathyrus jepsonii var. californicus Joseph P. Tracy 1913-6-13 4110 Humboldt opposite Buck Mountain (Dinsmore's Ranch); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  HSC71617  Lathyrus latifolius J. P. Smith 1973-5-26 6800 Humboldt Scotia Bluffs along the Eel River near Rio Dell Comment
  HSC95582  Lathyrus latifolius Andrea Pickart 2002-7-19 183 Humboldt Arcata Marsh at Jolly Giant Creek mile .1 10 Comment
  HSC46964  Lathyrus littoralis J. P. Smith, Thomas W. Nelson 1977-6-30 9217 Humboldt Samoa Peninsula just E of the drag strip. Comment
  RSA554595  Lathyrus littoralis Walter Wisura 1993-5-9 4913 Humboldt Sand dunes near Samoa. Comment
  UC1222414  Lathyrus nevadensis var. nevadensis Joseph P. Tracy 1946-5-19 17534 Humboldt Kneeland Prairie 762 Comment
  UCD106339  Lathyrus polyphyllus K. Esau 1934-5-8 s.n. Humboldt Above Fort Seward. 457 Comment
  HSC18847  Lathyrus sphaericus Cherry Kline 1971-5-31 45 Humboldt 1.5 mi. NW of Petrolia on side of Mattole Rd. Comment
  HSC23072  Lathyrus tracyi Richard Spjut 1971-5-7 1859 Humboldt 2-4 mi. up Three creeks Rd., W of Willow Creek 457 Comment
  RSA88215  Lathyrus vestitus subsp. bolanderi C. L. Hitchcock 1948-6-7 19085 Humboldt Ca 15 mi les east of Blue Lake, along Highway #299. Comment
  HSC103352  Lathyrus vestitus var. ochropetalus Thomas W. Nelson, Jane Nelson 1983-6-12 7407 Humboldt Along Kneeland Rd., ~ .5 mi. SE of junction with Maple Creek Rd. 671 Comment
  HSC5911  Layia carnosa J. W. Johnson 1962-4-18 1272 Humboldt Arcata, between the Mad River mouth and the Hunt Farm, Samoa Peninsula. Comment
  UC89177  Layia carnosa Harley P. Chandler May 1901 1150 Humboldt Humboldt Bay 3 Comment
  HSC100153  Lemna minor Rick Lundquist 1979-5-18 95 Humboldt Clam Beach Ponds 0 Comment
  UC672866  Lemna turionifera Joseph P. Tracy 1935-7-17 14109 Humboldt Trinity River Valley, at Willow Creek Willow Creek; Trinity River Valley, Willow Creek 152 Comment
  UC1223216  Leontodon saxatilis Joseph P. Tracy 1948-7-11 18072 Humboldt at Lack Pond Comment
  CHSC52000  Leontodon saxatilis subsp. saxatilis J. P. Smith 1971-10-6 4966 Humboldt Dunes at the end of Murray Road in McKinleyville. Comment
  UC1239531  Leontodon saxatilis subsp. saxatilis Joseph P. Tracy 1921-7-10 5848 Humboldt Big Lagoon Northern Coast Region, Big Lagoon 6 Comment
  UC14403  Lepidium densiflorum Chesnut and Drew 1888-7-10 Humboldt Jarnigan's Comment
  CAS-BOT-BC89077  Lepidium didymum Joseph P. Tracy 1938-7-15 16067 Humboldt Mouth of Eel River. 3 Comment
  CAS-BOT-BC89078  Lepidium didymum Peter Rubtzoff 1968-9-4 5960 Humboldt Goulds Bar, South Fork Eel River southeast of Weott. Comment
  UC1222651  Lepidium virginicum var. pubescens Joseph P. Tracy 1950-8-20 19317 Humboldt Orleans Comment
  HSC37507  Leptosiphon androsaceus J. D. Ackerman, A. M. Montalvo 1975-6-22 486 Humboldt 6.4 mi. W of Dinsmore, Hwy. 36 Comment
  CAS-BOT-BC226709  Leptosiphon latisectus Victor Duran 1933-5-10 3403 Humboldt Near Blocksburg Comment
  CAS-BOT-BC226712  Leptosiphon latisectus Mrs. H. C. Cantelow 1939-6-4 4125 Humboldt N.E. of Garberville Comment
  BLMAR263  Leucanthemum vulgare Jennifer Anthony-Wheeler 1999-6-16 263 Humboldt Headwaters Forest Reserve, On trail to ' Scar rd ' 487 Comment
  UCD134127  Leucanthemum vulgare Lincoln Constance 1934-6-6 827 Humboldt Bull Creek Region, South Fork Eel Rive, Fire Trail, Dyerville to Horse Prairie and return. Comment
  HSC3105  Leucojum aestivum J. C. Reppas 1963-2-22 20 Humboldt 820 Fickle Hill Rd. Comment
  UC526794  Leymus mollis subsp. mollis Joseph P. Tracy 1927-5-1 7954 Humboldt sand dunes near Samoa (next to ocean); Northern Coast Ranges, Humboldt Bay 6 Comment
  HSC75965  Ligusticum grayi Overton, Butler 1979-8-2 12584 Humboldt Near Bret 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
  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
  UC1198247  Lilium occidentale Joseph P. Tracy 1918-7-21 5078 Humboldt around Humboldt Bay Humboldt Hill; Northern Coast Ranges, Humboldt Bay, Humboldt Hill 182 Comment
  UCSB698  Lilium pardalinum Phillips, Priscilla 1958-6-7 Humboldt On Highway 101, 14.1 mi. south of Prairie Creek Redwoods State Park (north of Trinidad) Comment
  HSC58051  Lilium pardalinum subsp. pardalinum G. L. Clifton, Griswold 1979-8-1 11913 Humboldt Near Mill Creek Lakes, close to the town of Hoopa. 1692 Comment
  JEPS19583  Limnanthes douglasii Joseph P. Tracy 1933-5-20 12271 Humboldt Bear River Ridge Northern Coast Ranges 609 Comment
  UC1197412  Limnanthes douglasii Joseph P. Tracy 1911-6-29 3269 Humboldt near Hydesville (on gravel bars of Van Duzen River and Yager Creek); Northern Coast Region 60 Comment
  UC673262 Image available Limnanthes douglasii Lincoln Constance and Reed C. Rollins 1942-5-21 3000 Humboldt two mi n Harris; Klamath-Siskiyou Region; Siskiyou Region, Humboldt Co. 762 Comment
  UC1561269  Limnanthes douglasii subsp. nivea Barbara Ertter with Thomas J. Delendick 1987-5-16 6925 Humboldt just w Berry Summit (on Hwy 299, ca 15 air mi e of Arcata); Vista Point 914 Comment
  HSC22526  Limonium californicum Wm. F. Bowman 1968-11-9 Humboldt Along E edge of Humboldt Bay, 1 mi. S of Arcata Comment
  SEINET200735  Linanthastrum nuttallii J. P. Tracy 1936-8-2 15063 Humboldt French Camp Ridge 1067 Comment
  JEPS58249  Linanthus bicolor Joseph P. Tracy 1933-6-13 12576 Humboldt near summit on road from Hoopa w to Bair's; Hoopa Mountain 1066 Comment
  UC1198567  Linanthus bicolor Joseph P. Tracy 1914-5-14 4435 Humboldt Fort Seward Northern Coast Ranges 121 Comment
  UC176973  Linanthus bicolor Joseph P. Tracy 1913-6-16 4143 Humboldt opposite Buck Mountain (Dinsmore's Ranch); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  UC1198539  Linanthus harknessii Joseph P. Tracy 1933-8-30 13022 Humboldt Grouse Mountain North Coast Ranges 1524 Comment
  HSC98065  Linnaea borealis Cara Witte 2007-7-12 523 Humboldt Forest Service Road 5N10C. Approximately 1 mile south for intersection with Ammon Ridge Road. 1252 Comment
  HSC42008  Linum bienne Tom Duebendorfer 1977-5-15 47 Humboldt 0.52 mi. after junction of Snow Creek Rd. and Maple Creek Rd. along Maple Creek Rd. 518 Comment
  RSA0049664  Listera cordata Dean Wm. Taylor 2011-5-4 21113 Humboldt Alderpoint Road in the vicinity of headwaters of Knack Creek 777 Comment
  UC1196369  Lithocarpus densiflorus Joseph P. Tracy 1926-10-6 7807 Humboldt between South Fork of Trinity River and Madden Creek (mountain back of Ammon Ranch); Northern Coast Ranges 609 Comment
  UC54690  Lithocarpus densiflorus Mrs. M. H. Manning Oct 1901 Humboldt near Hupa Comment
  RSA152286  Lithocarpus densiflorus var. echinoides Joseph P. Tracy 1948-8-15 18136 Humboldt Trinity Summit. On ridge 2 miles east of Grove's Prairie. 1524 Comment
  UC1196488  Lithophragma campanulatum Joseph P. Tracy 1933-7-26 12926 Humboldt on the s slope Grouse Mountain; s slope Grouse Mountain 1219 Comment
  UC492222  Lithophragma heterophyllum Joseph P. Tracy 1932-4-24 9827 Humboldt South Fork of Eel River between Miranda and Redway; North Coast Ranges, South Fork of Eel River 91 Comment
  HSC96204  Lithophragma parviflorum Jennifer Lumbert, James Robinson 2005-6-3 1 Humboldt 19.3 mi. S of Hwy. 299 on NF 1 1205 Comment
  JEPS20905  Logfia filaginoides Joseph P. Tracy 1921-5-30 5489 Humboldt Kneeland Prairie Northern Coast Ranges, Kneeland Prairie 762 Comment
  UC180491  Lolium perenne Joseph P. Tracy 1913-6-10 4088 Humboldt Bridgeville; Northern Coast Ranges, Bridgeville 304 Comment
  UC33879  Lolium temulentum Chesnut and Drew 1888-7-13 Humboldt Campbell's Comment
  HSC32942  Lomatium californicum Thomas W. Nelson, James Nelson 1973-5-28 954 Humboldt McKeown Ranch N of Dinsmore Comment
  HSC98833  Lomatium ciliolatum var. ciliolatum Cara Witte 2007-5-31 142 Humboldt Off National Forest 1. Near Board Camp Mountain. Approximately 4 miles south of Brays Opening and 1/2 mile west of road. 1510 Comment
  HSC99106  Lomatium dasycarpum subsp. dasycarpum Cara Witte 2008-6-18 743 Humboldt Horse Mountain Botanical Area. Junction of 6N36 and 6N36A. 1375 Comment
  UC183629  Lomatium dissectum var. dissectum Joseph P. Tracy 1913-6-20 4237 Humboldt lower foothills on n.w. slope Buck Mt.; Northern Coast Ranges, Buck Mt. 762 Comment
  HSC71822  Lomatium macrocarpum Thomas W. Nelson, Jane P. Nelson 1980-6-27 5937 Humboldt Along old trail to pond above Alder Spring, 0.5 mi. N of campground 1555 Comment
  HSC44439  Lomatium tracyi Barbara Kelly 1978-5-1 589 Humboldt 1/4 mi. from Horse Mtn., road 1/2 mi. below turnoff to summit, near end of unused gravel road Comment
  UC162919  Lomatium utriculatum Joseph P. Tracy 1911-7-7 3374 Humboldt 3 mi. n.w. junction of Willow Creek w/ Trinity R. (at meadows on mt. side, and near Beebe's Ranch); Northern Coast Ranges 914 Comment
  UC183624  Lomatium utriculatum Joseph P. Tracy 1912-6-9 3671 Humboldt Northern Coast Region, Alton 30 Comment
  UC906652  Lomatium utriculatum Joseph P. Tracy 1947-6-8 17707 Humboldt 5 mi. e. Carlotta (open flat by old Strong's District School House) 45 Comment
  HSC98971  Lomatium vaginatum Cara Witte 2007-6-4 193 Humboldt Cold Spring. 0.5 mile S of Titlow Hill. 1386 Comment
  HSC73729  Lonicera conjugialis M. A. Baker 1980-7-22 3077 Humboldt Near Salmon Mtn. 1820 Comment
  CAS-BOT-BC240471  Lonicera hispidula Alice Eastwood; John Thomas Howell 1937-6-22 4733 Humboldt Near Alder Point Comment
  RSA239767  Lonicera involucrata Larry E. DeBuhr 1973-4-23 s.n. Humboldt Big Lagoon 10 miles S of Orick, SW end of lagoon Comment
  CAS-BOT-BC241489  Lonicera involucrata var. ledebourii Elizabeth Parsons Hawver 1915-6-1 s.n. Humboldt Carlotta Comment
  HSC37832  Lonicera involucrata var. ledebourii Thomas W. Nelson, James Nelson 1976-3-11 2264 Humboldt Beside Eel River just N of W terminus of Singley Rd. Comment
  HSC69640  Lonicera involucrata var. ledebourii R. Kalal 1980-5-18 19 Humboldt Entrance to Dry Lagoon State Park, along abandoned Rd. 21 Comment
  RSA455682  Lonicera involucrata var. ledebourii E. A. Purer 1932-7-27 15978 Humboldt Near Samoa. Comment
  CAS-BOT-BC200911  Lotus Greg de Nevers 2001-4-18 12256 Humboldt Lanphere-Christenson dunes, near Arcata 9 Comment
  CAS-BOT-BC200915  Lotus Doris Kildale Gillespie 1931-6-7 10589 Humboldt South Fork Mt. Blake Lookout 1726 Comment
  UC162608  Lotus aboriginus W. C. Blasdale 1896-5-31 Humboldt Eureka Comment
  UC495716  Lotus aboriginus Joseph P. Tracy 1930-9-14 9185 Humboldt Kneeland Northern Coast Ranges 609 Comment
  HSC98254  Lotus corniculatus Norman H. Moe 1962-5-19 Humboldt Lanphere's Place Comment
  HSC46979  Lotus corniculatus J. P. Smith, Thomas W. Nelson 1977-6-30 9206 Humboldt Samoa Peninsula just E of the drag strip. Comment
  HSC96477  Lotus corniculatus Gordon Leppig 1997-6-19 444 Humboldt Big Lagoon County Park, Big Lagoon Bog 3 Comment
  RSA246781  Lotus corniculatus Robert F. Thorne, Percy C. Everett, K. Thorne 1965-8-8 35231 Humboldt North edge of Eureka, east of Highway 101 5 Comment
  SEINET12158899  Lotus denticulatus J. P. Tracy 1934-1 13219 Humboldt Horse Mountain 1433 Comment
  UC33504  Lotus formosissimus Chesnut and Drew 1888-7-8 Humboldt Kneeland Prairie Comment
  UC168974  Lotus micranthus Joseph P. Tracy 1912-6-9 3647 Humboldt Alton Northern Coast Region 30 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
  POM232036  Lotus unifoliolatus I. L. Wiggins 1930-7-22 4689 Humboldt Along bank of Redwood Creek btwn Blue Lake and Willow Creek. Comment
  POM276694  Lotus unifoliolatus Lyman Benson 1928-7-12 462 Humboldt Weott Ranger Station. 61 Comment
  SEINET3136450  Lotus yollabolliensis R. W. Spellenberg 1990-7-9 10230 Humboldt 7 air mi WNW of Hyampom, 40 mi S of Calif. Hwy 299 and Berry Summit on USFS Road 1, ca 1 mi N of Blake Mtn. on South Fork Mtn 1768 Comment
  UC1196932  Ludwigia palustris Joseph P. Tracy 1948-7-26 18076 Humboldt mouth of Willow Creek Lack Pond; Northern Coast Ranges, Trinity R. Valley, Lack Pond 152 Comment
  CAS-BOT-BC342559  Luina hypoleuca Frank W. Peirson 1926-7-12 7026 Humboldt Klamath River near Weitchpec Comment
  HSC74666  Luina hypoleuca Gail Newton 1981-8-7 2423 Humboldt Near Bug Creek Butte 1244 Comment
  SD56747  Luina nardosmia Darley F. Howe 1963-5-26 3553 Humboldt 2.8 miles east of Orick on Bal Hill Road. 424 Comment
  UC503012  Lupinus adsurgens Joseph P. Tracy Jul 16 1930-Jul 19 1930 9059 Humboldt near Blake lookout, South Fork Mountain along summit; Northern Coast Ranges, South Fork Mountain 1737 Comment
  HSC35035  Lupinus affinis Thomas W. Nelson, James Nelson 1975-5-24 1857 Humboldt McKeown Ranch, N of Dinsmore. Comment
  UC303158  Lupinus albicaulis var. shastensis Joseph P. Tracy 1923-6-19 6298 Humboldt near Kings Peak (Wilder Ridge); Northern Coast Ranges, near Kings Peak, Wilder Ridge 762 Comment
  RSA167471  Lupinus albifrons var. albifrons Joseph P. Tracy 1951-6-16 19472 Humboldt Near Oregon-California State Line. Comment
Read comments
Jul 12 2012
  UCD106589  Lupinus arboreus Linda M. Barker 1976-5-13 1472 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  RSA1902  Lupinus arboreus var. arboreus Carl B. Wolf 1930-10-28 1036 Humboldt Samoa. 15 Comment
  HSC33762  Lupinus bicolor A. Montalvo 1975-5-24 277 Humboldt Samoa Dunes off Samoa Blvd., across from the boat landing Comment
  UC1197275  Lupinus bicolor Joseph P. Tracy 1939-4-18 16219 Humboldt Garberville 152 Comment
  JEPS82142  Lupinus constancei Thomas W. Nelson and Jane P. Nelson 1982-7-9 7079 Humboldt Mt. Lassic (Signal Peak) and saddle to e North Coast Ranges, Blockburg Quad., Mt. Lassic (Signal Peak; Blocksburg Quadrangle on Mt. Lassic (Signal Peak), Humboldt Co. 1767 Comment
  HSC58640  Lupinus latifolius G. L. Clifton, Griswold 1979-7-31 11636 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1719 Comment
  HSC63290  Lupinus latifolius subsp. viridifolius M. A. Baker 1979-6-27 938 Humboldt Jct. of Tish Tang A Tang Creek and trail through Grogan's Hole Comment
  UCD108590  Lupinus lepidus var. sellulus Richard Spellenberg 1965-6-13 1110 Humboldt on e. side of Trinity River, about 3/4 mi. s. of hwy. through Hoopa Indian Reservation. Comment
  HSC41637  Lupinus lyallii var. villosus Thomas W. Nelson, Jane P. Nelson 1977-7-4 3583 Humboldt N of Alder Springs at head of N Fork of Conley Creek 1555 Comment
  SJSU10768  Lupinus nanus R. D. Spadoni 1965-5-1 95 Humboldt c. 20 mi SE of Bridgeville on State Rte 36 Comment
  HSC63182  Lupinus onustus M. A. Baker 1979-7-10 1024 Humboldt Above Bluff Creek Comment
  RSA20859  Lupinus polyphyllus var. grandifolius Carl B. Wolf 1937-6-18 8898 Humboldt 1/2 miles E of Alton. 21 Comment
  UC169346  Lupinus polyphyllus var. pallidipes Joseph P. Tracy 1912-6-9 3693 Humboldt Alton; Northern Coast Region, Alton 30 Comment
  UC176608  Lupinus polyphyllus var. polyphyllus Joseph P. Tracy 1913-6-25 4335 Humboldt opposite Buck Mountain (Dinsmore's Ranch, in the valley of the Van Duzen River); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  HSC14165  Luzula comosa S. R. Johnson 1965-4-30 47 Humboldt 0.5 mi. N of Luffenholtz Beach Comment
  HSC45018  Luzula comosa R. Sutherland 1978-4-23 13 .23478 Humboldt Telegraph Ridge at head of Green Ridge 707 Comment
  UC1103682  Luzula comosa var. laxa Joseph P. Tracy 1924-4-27 6649 Humboldt Northern Coast Ranges: Near Berry's on Redwood Creek 365 Comment
  CHSC118269  Luzula macrantha Peter F. Zika 2011-7-3 25499 Humboldt Titlow Hill Road, 4.2 road miles SE of Route 299 at Berry Summit, 0.8 air km SSW of Horse Mountain. Outer North Coast Ranges (NCoRO). 1390 Comment
  UC3007  Luzula parviflora Harley P. Chandler May, 1901 1163 Humboldt Humboldt Bay North Coast Ranges, Humboldt Bay 30 Comment
  HSC97961  Luzula parviflora Cara Witte 2007-6-13 258 Humboldt Along Forest Service Road 5N04. 1/4 mile east of spring near Grouse Mountain. 1564 Comment
  RSA590653  Lycopodiella inundata Doris K. Kildale 1929-7-10 s.n. Humboldt Big Lagoon Comment
  CHSC26464  Lysichiton americanus J. Detzer 1977-4-8 4 Humboldt S end of Patricks Point State Park, ca. .2 mi w of Hwy. 101 and 5 mi n of Trinidad. 60 Comment
  POM87675  Lysichiton americanus Le Roy Abrams, Rimo C. Bacigalupi 8277 Humboldt Big Lagoon. South of Orick. Comment
  JEPS42815  Lysichiton americanus Lincoln Constance 1934-6-18 894 Humboldt near South Fork Rail Road Station and Post Office (border of North Dyerville Flat, South Fork Eel River); Bull Creek Region, South Fork Eel River Comment
  RSA183502  Lysichiton americanus T. L. Grosz 1964-5-1 C Humboldt 300 yards up on Park Ave. and behind Myrtle Ave. Comment
  HSC101056  Lythrum salicaria Sydney Carothers 1997-8-19 207 Humboldt Hwy. 36, north end of dividerless road; private property 732 Comment
  RSA94392  Madia anomala F. W. Peirson 1926-7-14 7067 Humboldt Redwood Camp, Lower Eel River Comment
  UC176778  Madia anomala J. P. Tracy 1903-5-22 1888 Humboldt at Alder Point; Eel River 152 Comment
  POM284991  Madia citriodora Lyman Benson 1929-7-12 1791 Humboldt Weott Ranger Station. S Fork Eel River. Comment
  HSC57180  Madia gracilis Griswold, Butler 1979-7-10 6211 Humboldt Near Kinsey Ridge, close to the town of Willow Creek 1244 Comment
  HSC71593  Madia gracilis M. A. Baker 1980-6-26 2402 Humboldt Near Sims Creek 610 Comment
  RSA249398  Madia madioides D. E. Anderson, Thomas Nelson, S. Dowty 1972-6-17 5696 Humboldt McKeown Ranch north of Dinsmore Comment
  HSC35863  Madia sativa Thomas W. Nelson, Jane P. Nelson 1975-8-5 2131 Humboldt Along S spit of Humboldt Bay adjacent to jetty Comment
  UC1069897  Madia sativa H. L. Person 1932-8-15 Humboldt Korbel Eureka Quadrangle Comment
  UC146220  Maianthemum dilatatum J. P. Tracy 1906-11-4 2552 Humboldt immediate vicinity Eureka 0 Comment
  POM87668  Maianthemum dilatatum Le Roy Abrams, Rimo C. Bacigalupi 8300 Humboldt Near northern county line Comment
  RSA244984  Maianthemum dilatatum M. N. Gold 1966-5-15 25 Humboldt Dry Lagoon State Park, 13 miles north of Trinidad Comment
  UC1028306  Maianthemum dilatatum George B. Rossbach 1955-6-8 223 Humboldt n. portion Prairie Creek Redwoods State Park, Rte. 101 Prairie Creek Redwoods State Park, Rte. 101 Comment
  UC303039  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
  HSC42005  Maianthemum racemosum subsp. amplexicaule Tom Duebendorfer 1977-5-15 52 Humboldt 8.9 mi. E on Ward Rd. from junction of Maple Creek Rd. and Old Hwy. 299 610 Comment
  HSC48830  Maianthemum racemosum subsp. amplexicaule Brad Klipfel, J. P. Smith, J. O. Sawyer 1973-5-27 40 Humboldt Grogan's Hole near N Trinity Mtn. 1829 Comment
  HSC74330  Maianthemum racemosum subsp. amplexicaule Gail Newton 1980-6-16 145 Humboldt Near Monks Camp. 1097 Comment
  HSC15650  Maianthemum racemosum subsp. amplexicaule V. G. Vieira 1963-5-2 47 Humboldt Butler Valley Ranch Comment
  CAS-BOT-BC512771  Maianthemum stellatum V. Rattan 1883-6-1 s.n. Humboldt Near summit between Pilot Creek and South Fork Trinity River Comment
  CAS-BOT-BC347410  Malacothrix floccifera Doris K. Kildale 1926-9-5 2651 Humboldt Lasseck's Peak - Signal Peak 1791 Comment
  HSC35694  Malacothrix floccifera Thomas W. Nelson, B. Reinhardt 1975-7-30 2101 Humboldt Along road out Whiting Ridge Comment
  RSA178549  Malus sylvestris Joseph P. Tracy 1950-4-23 18636 Humboldt Trinity River Valley, at Willow Creek. 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
  UC1199283  Matricaria discoidea Joseph P. Tracy 1933-5-20 12217 Humboldt Capetown 30 Comment
  HSC71609  Medicago lupulina J. P. Smith, Steve Selva 1970-6-14 3815 Humboldt Along Hwy. 96 at Whitmore Creek 152 Comment
  JEPS75422  Melica geyeri W. L. Jepson 1932-7-30 16458 Humboldt Bull Creek 121 Comment
  CAS-BOT-BC281324  Melica harfordii Doris K. Kildale 1928-6-24 5287 Humboldt Horse Mountain 914 Comment
  HSC26126  Melica harfordii J. P. Smith, Steve Selva 1970-6-14 3816 Humboldt Along Hwy. 96 at Whitmore Creek. 152 Comment
  UCD87370  Melica harfordii A. A. Beetle; G. L. Stebbins Jr. 1942-6-1 3453 Humboldt 2 miles north of Orleans. Klamath River. Comment
  UCD87536  Melica harfordii A. H. Murphy 1947-6-17 s.n. Humboldt 1 mile south of Blocksburg. Comment
  CAS-BOT-BC264164  Melica subulata Joseph P. Tracy 1933-7-26 12910 Humboldt Grouse Mountain 1524 Comment
  HSC71570  Melilotus albus J. P. Smith 1971-10-9 5042 Humboldt Banks and flood plain of the Mad River above the fish hatchery. Comment
  HSC25761  Melilotus officinalis Jana Kattenhorn 1970-10-14 45 Humboldt Big Lagoon Comment
  UC1222473  Melilotus officinalis Joseph P. Tracy 1949-7-7 18337 Humboldt Blue Slide Van Duzen River 91 Comment
  UC1225832  Mentha aquatica Joseph P. Tracy 1947-11-9 17945 Humboldt Ferndale 9 Comment
  HSC14244  Mentha canadensis John Warner Hosking 1968-10-10 Humboldt Clam Beach. Comment
  HSC12369  Mentha canadensis C. E. Fellows 1970-10-27 376 Humboldt Banks of Mad River 1/8 mi. W of Lindsey Creek Comment
  SEINET3228190 Image available Mentha pulegium Joseph P. Tracy 1930-9-1 9175 Humboldt Miranda, along South Fork of Eel River 120 Comment
  SEINET200815  Mentzelia dispersa Joseph P. Tracy 1908-7-30 2843 Humboldt Northwest slope of Buck Mountain 1219 Comment
  JEPS80898  Menziesia ferruginea B. A. Bohm, K. W. Nichols 1981-5-11 1571 A Humboldt Prairie Creek area, Mile 125.00, US Hwy 101 Prairie Creek area; , Mile 125.00, US Hwy 101 Comment
  RSA293124  Micropus californicus Thomas W. Nelson, Jane P. Nelson 1976-5-30 2621 Humboldt McKeown Ranch north of Dinsmore. Comment
  UC164793  Microseris bigelovii Joseph P. Tracy 1911-5-30 3203 Humboldt Bucksport Northern Coast Region, Humboldt Bay Region 0 Comment
  UC180185  Microseris borealis Joseph P. Tracy 1914-7-4 4541 Humboldt High Prairie Northern Coast Ranges, Bald Mountain 1066 Comment
  CAS-BOT-BC349177  Microseris elegans K. L. Chambers 1969-5-25 2924 Humboldt On road to Harris 5.2 mi. E of the freeway overpass at Garberville Comment
  JEPS13226  Microseris laciniata subsp. laciniata Joseph P. Tracy 1936-6-17 14942 Humboldt Bridgeville 198 Comment
  HSC103080  Microseris nutans Sydney Carothers 2014-6-12 14 Humboldt Six Rivers National Forest, Lassics Botanical Area, north slope Red Lassic 1712 Comment
  HSC6099  Microseris nutans J. P. Tracy 1930-7-16 8900 Humboldt Near McKay Camp. 1677 Comment
  UC1196771  Mimulus alsinoides Joseph P. Tracy 1924-4-27 6646 Humboldt East Fork of Willow Creek Northern Coast Ranges, Willow Creek Canyon 457 Comment
  JEPS87265  Mimulus aurantiacus var. aurantiacus David M. Thompson 1992-6-6 1115 Humboldt just n Miranda (0.1 mi s of bridge over Bridge Creek along Hwy 254 (parallels Hwy 101)) 100 Comment
  UC1052478  Mimulus aurantiacus var. aurantiacus H. E. and S. T. Parks June 1951 Humboldt near landing, type locality Trinidad Comment
  HSC56036  Mimulus breweri Gilbert Muth 1979-7-31 11601 Humboldt Near Trinity Summit, close to the town of Hoopa 1720 Comment
  UC147884  Mimulus grandis J. P. Tracy 1903-6-14 1923 Humboldt immediate vicinity Eureka 0 Comment
  HSC102597  Mimulus guttatus M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-28 1584 Humboldt Slopes above Bret Hole and below trail 6E18, 1.5 km SSW of Trinity Summit. 1778 Comment
  HSC71741  Mimulus guttatus M. A. Baker 1980-6-26 2421 Humboldt Near Sims Creek 610 Comment
  RSA14135  Mimulus guttatus Elmer I. Applegate 1923-9-10 3995 Humboldt Stone Lagoon. Comment
  HSC102538  Mimulus moschatus M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-28 1524 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1106 Comment
  HSC55736  Mimulus moschatus G. L. Clifton, Griswold 1979-7-26 10233 Humboldt Near High Spring, close to the town of Forks of Salmon 2024 Comment
  UC169323  Mimulus nasutus Harley P. Chandler 1901-6-16 1509 Humboldt Somes Bar North Coast Ranges, Klamath River 426 Comment
  UC179950  Mimulus nasutus Joseph P. Tracy 1914-5-14 4457 Humboldt Fort Seward Northern Coast Ranges 121 Comment
  HSC72697  Mimulus pulsiferae Gail Newton 1980-6-24 583 Humboldt Near Ladder Rock 1570 Comment
  HSC32136  Minuartia nuttallii subsp. gregaria D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5605 Humboldt Mt. Lassic and two smaller peaks to immediate E 1768 Comment
  HSC58019  Minuartia pusilla G. L. Clifton 1979-7-31 11821 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  JEPS109807  Mitella caulescens Dean W. 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
  HSC59448  Mitella ovalis Kenneth Clark 1979-4-2 23 Humboldt 1/4 mi. E of end of Granite Ave. above Jolly Giant Creek 46 Comment
  HSC98562  Mitella trifida var. trifida Cara Witte 2008-6-18 739 Humboldt Approximately 1.5 miles north-west of Forest Service Rd. 6N01B. On an unmarked road on right hand side. 1433 Comment
  HSC38514  Moehringia macrophylla D. E. Anderson, J. P. Smith 1971-6-18 - 1086 Humboldt Horse Mtn. Comment
  HSC74566  Moehringia macrophylla M. A. Baker 1980-5-17 1278 Humboldt Near Le Perron Peak 1066 Comment
  HSC96209  Moehringia macrophylla Rick Lindquist, C. Riley 2005-6-3 2 Humboldt 19.3 mi. S of Hwy. 299 on NF1 1205 Comment
  HSC99385  Moehringia macrophylla K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-6-28 34 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  HSC57122  Monardella odoratissima subsp. pallida Walter Overton, Marvin Butler 1979-7-25 9870 Humboldt Near Sims Mtn., close to the town of Willow Creek 1295 Comment
  LA62409  Monardella sheltonii C. B. Wolf; 1934-7-1 5848 Humboldt along Eel River and redwood Highway, 1.2 mi. S of F. K. Lane Grove 60 Comment
  LA62437  Monardella villosa Carl Epling; William Robison 1935-7-24 sn Humboldt Dyerville Comment
  RSA0022796  Monardella villosa H. M. Pollard 1948-7-19 s.n. Humboldt Between Orleans and Van Fleet Ranch. Comment
  UC577347  Monardella villosa subsp. villosa Joseph P. Tracy 1937-7-11 15425 Humboldt Vicinity of Garberville 121 Comment
  CAS-BOT-BC444804  Montia diffusa Harley P. Chandler 1901-5-1 1271 Humboldt North Coast Ranges. Redwood Belt 152 Comment
  UC161062  Montia diffusa Joseph P. Tracy 1906-6-10 2487 Humboldt Kneeland Prairie, near Haughey's Mill Kneeland Prairie; Northern Coast Ranges, Kneeland Prairie 609 Comment
  UC7839  Montia diffusa Harley P. Chandler May, 1901 1271 Humboldt North Coast Ranges 152 Comment
  UCD101747  Montia diffusa Don Hagar 1956-5-14 59 Humboldt Brush Mountain, 6 miles southwest of Willow Creek. 914 Comment
  CAS-BOT-BC444832  Montia fontana James Payne Smith, Jr. 1976-2-21 8507 Humboldt Tish Tang Campground Comment
  BLMAR621  Montia howellii Jennifer Anthony-Wheeler 2009-5-20 521 Humboldt Lacks Creek, On main westside road on vernally wet inboard ditch behind gate 853 Comment
  UC198599  Montia howellii Joseph P. Tracy 1916-5-7 4686 Humboldt Eureka; Northern Coast Region, Eureka 0 Comment
  HSC97935  Montia linearis Cara Witte 2007-5-21 63 Humboldt White Oak Opening. 1257 Comment
  HSC55193  Montia parvifolia G. L. Clifton, Terry Griswold 1979-8-2 12267 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  UC673004  Montia parvifolia Joseph P. Tracy 1935-7-24 14170 Humboldt Trinity Summit, near Ranger Station Trinity Summit 1828 Comment
  JEPS17211  Montia parvifolia Milo S. Baker 1923-7-31 143 a Humboldt 6 mi s of Kneeland (and w of Iaqua, Booths Run); North Coast, Booths Run Comment
  RSA44542  Muhlenbergia andina Henry M. Pollard 1947-8-19 s.n. Humboldt Wilson Creek near Orleans. Comment
  UCD86803  Muhlenbergia mexicana Joseph P. Tracy 1916-9-5 4774 Humboldt South Fork of Eel River, 4 miles above the mouth. 60 Comment
  UC582539  Myosotis discolor Joseph P. Tracy 1936-5-17 14809 Humboldt at crossing of Kneeland Rd. Lawrence Creek 457 Comment
  RSA47091  Myrica californica Doris K. Kildale 1926-11-28 2866 Humboldt Patrick s Point Comment
  HSC77867  Myriophyllum aquaticum J. Miller 1978-5-14 780514 .2 Humboldt Near Central Ave. and Murray Rd. in McKinleyville Comment
  HSC77877  Myriophyllum hippuroides J. M. Handley 1977-11-28 771128 .1 Humboldt Lake Prairie, Snow Camp Rd., E of Maple Creek 1067 Comment
  UC526767  Nassella pulchra Joseph P. Tracy 1927-5-8 7963 Humboldt slopes facing South Fork of Eel River; Northern Coast Ranges, Phillipsville 121 Comment
  UC1197901  Navarretia capillaris Joseph P. Tracy 1935-7-28 14314 1/2 Humboldt head Devil's Hole , head of Devil's Hole (Trinity Summit) 1828 Comment
  JEPS70319  Navarretia intertexta Joseph P. Tracy 1898-7-14 91 Humboldt near Hydesville Comment
  UC146173  Navarretia intertexta Joseph P. Tracy 1908-6 2799 Humboldt opposite Buck Mountain; Northern Coast Ranges, Valley of Van Duzen River 304 Comment
  SEINET200377  Navarretia intertexta Joseph P. Tracy 27 Jun to 30 Jul 1908 2799 Humboldt Valley of Van Duzen River opposite Buck Mountain. 305 Comment
  HSC96932  Navarretia intertexta subsp. propinqua Elizabeth Kimbrough, Whitney Meier 2007-6-13 9 Humboldt Grouse Mtn., 1 mi. E of NF1 on USFS 5N04 1524 Comment
  SEINET200382  Navarretia squarrosa J. P. Tracy 1904-7-31 2135 Humboldt Immediate vicinity of Eureka. 0 Comment
  UC908872  Navarretia squarrosa Joseph P. Tracy 1935-7-18 14103 Humboldt Table Bluff 6 Comment
  SEINET12279170  Navarretia tagetina J. P. Tracy 1950-1 18862 Humboldt Dobbyn Creek, 3 mi NE of Alderpoint 213 Comment
  SEINET10840156  Nemacladus capillaris Tracy 1930-7-10 TRACY 8865 Humboldt Brannan Mountain 1219 Comment
  UC1103810  Nemophila heterophylla Joseph P. Tracy 1922-4-30 5987 Humboldt near Willow Creek (Trinity River Valley); Northern Coast Ranges, Trinity River Valley 152 Comment
  RSA33408  Nemophila menziesii var. atomaria Doris K. Kildale 1929-2-19 4265 Humboldt Little River. Comment
  CAS-BOT-BC219407  Nemophila parviflora M. S. Jussel 1931-5-2 92 Humboldt Sylvandale, 8 miles N. of Garberville Comment
  HSC71171  Nemophila parviflora Thomas W. Nelson 1977-5-30 3416 Humboldt Base of Eight Mile Ridge upstream from Anderson's Ford. 701 Comment
  UC1239739  Nemophila parviflora Joseph P. Tracy 1949-6-6 18310 Humboldt ne Hawkins Bar (Happy Camp Mountain); Trinity Summit Range, , ne Hawkins Bar 1280 Comment
  UC1103813  Nemophila pedunculata Joseph P. Tracy 1923-4-15 6181 Humboldt Berry's Northern Coast Ranges, Redwood Creek 274 Comment
  UC162585  Nemophila pedunculata Joseph P. Tracy 1911-5-7 3178 Humboldt Kneeland Prairie Northern Coast Ranges, Kneeland Prairie 762 Comment
  HSC8070  Notholithocarpus densiflorus var. densiflorus Doris K. Kildale 1926-8-22 2569 Humboldt Bald Hills; E end of Tomlinson's Prarie 716 Comment
  HSC8078  Notholithocarpus densiflorus var. densiflorus D. E. Anderson 1961-8-27 1759 Humboldt 8 mi. W of Redwood Creek Br. along Hwy. 299 Comment
  OBI36374  Notholithocarpus densiflorus var. densiflorus David J. Keil 1983-7-1 17266 Humboldt Ca. 8 mi W of jctn US 101 along Bull Creek Flats rd Comment
  CAS-BOT-BC400074  Nuphar polysepala L. R. Abrams 1918-6-16 7160 Humboldt Willow Creek Comment
  UC902240  Nuttallanthus texanus Joseph P. Tracy 1948-5-15 17977 Humboldt Trinity River Valley, at Willow Creek Willow Creek; Trinity River Valley, Willow Creek 152 Comment
  CDA26036  Oemleria cerasiformis R. Bennett 1976-7-2 Humboldt 505 Palmer Boulevard, Fortuna. 0 Comment
  UC1400343  Oenanthe sarmentosa Robert F. Thorne and P. Everett 1965-8-7 35212 Humboldt Samoa Peninsula Comment
  CDA38486  Oenanthe sarmentosa Bellue-Goodwin 1932-9-27 s.n. Humboldt Arcata. 0 Comment
  POM224764  Oenothera glazioviana P. A. Munz 1936-8-10 14335 Humboldt At edge of Rio Del. Comment
  UC666999  Olsynium douglasii var. douglasii Joseph P. Tracy 1930-5-25 8704 Humboldt Larrabee Valley 731 Comment
  HSC16684  Orobanche californica subsp. californica Jerry Parker 1968-10-26 205 Humboldt Big Lagoon, dredged sand-spit opposite Sphagnum bog. Comment
  UC1116247  Orobanche uniflora subsp. occidentalis Joseph P. Tracy 1948-5-31 18004 Humboldt Near Harris. Comment
  UC32669  Orthilia secunda Chestnut and Drew 1888-7-21 Humboldt South Fork Mts. Comment
  HSC56040  Orthocarpus imbricatus G. L. Clifton, Terry Griswold 1979-7-31 11605 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1719 Comment
  SEINET4096670  Orthocarpus tenuifolius O. M. Clark 1932-1 5693 Humboldt South Eureka. Comment
  UC1197132  Osmorhiza occidentalis Joseph P. Tracy 1932-7-11 10420 Humboldt Corral Prairie Trinity Summit 1584 Comment
  UC176987  Oxalis albicans subsp. pilosa Joseph P. Tracy 1912-6-9 3682 Humboldt Alton Northern Coast Ranges 30 Comment
  HSC59074  Oxalis articulata subsp. rubra Thomas Wood 1979-5-3 147 Humboldt In Arcata, in front yard at 3799 Spear Ave. 9 Comment
  UCR123951  Oxalis oregana George K. Helmkamp, E. A. Helmkamp 2001-7-8 6976 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
  JEPS43139  Oxalis oregana W. L. Jepson 1932-7-28 16432 Humboldt Bull Creek Flat Comment
  HSC6137  Packera bolanderi H. E. Parks, S. T. Parks May 1930 747 Humboldt Near Blue Slide on the middle Van Duzen River Comment
  POM89798  Panicum acuminatum var. acuminatum Joseph P. Tracy 1920-8-15 5356 Humboldt Klamath River at Bluff Creek 152 Comment
  UC1254537  Panicum acuminatum var. acuminatum R. Spellenberg 1966-9-8 1630 Humboldt 5 mi s Garberville (bank of South Fork Eel River at Hwy 101); bank of S Fk Eel River Comment
  CAS-BOT-BC253706  Panicum capillare Carl D. Duncan 1920-9-22 s.n. Humboldt Hoopa Valley Comment
  SEINET182648 Image available Parapholis incurva S. K. Harris, J. P. Tracy 1936-6-6 3218 Humboldt Eureka, California Comment
  SEINET200584 Image available Parapholis incurva Joeseph P. Tracy 1937-6-5 15328 Humboldt Mouth of Little River 3 Comment
  UC1199004  Paxistima myrsinites Joseph P. Tracy 1935-7-29 14346 Humboldt near Ranger Station Trinity Summit 1584 Comment
  HSC100679  Pedicularis densiflora Carl C. Marshall Apr 1887 379 Humboldt Hoopa Valley. Comment
  HSC60284  Pedicularis densiflora Richard Spjut 1979-3-25 5425 Humboldt Tish Tang Campground, 2 mi. E of Hoopa, above the river Comment
  CHSC3181  Pedicularis groenlandica Robert D. Briggs 1966-5-8 R- 187 Humboldt 1/4 mile south of Summit- 18 miles west of Willow Creek, on State 299. Comment
  HSC34280  Pedicularis racemosa K. Irwin 1975-8-16 Humboldt Grogans Hole area. Comment
  HSC73582  Pellaea brachyptera Gail Newton 1980-7-14 1489 Humboldt Near Last Chance Ridge. 1219 Comment
  CHSC63423  Penstemon anguineus Vernon H. Oswald 1994-6-29 6362 Humboldt Titlow Hill Rd. (Forest Rd. 1) 10.8 mi S of Hwy. 299, 0.6 mi S of Friday Ridge Rd., S of Willow Creek. 1548 Comment
  RSA21441  Penstemon anguineus Carl B. Wolf 1937-8-12 9205 Humboldt North Coast Range, South Fork Mt., Trinity Co line. 1585 Comment
  RSA412524  Penstemon deustus H. M. Pollard 1948-7-19 s.n. Humboldt River road near Fleet Ranch, near Orleans. Comment
  NY604551  Penstemon laetus var. sagittatus J. P. Tracy 1933-7-25 12827 Humboldt Horse Mountain 1432.6 Comment
  UCR39809  Penstemon newberryi D. K. Imper 1984-6-6 s.n. Humboldt Slate Creek Butte 1372 Comment
  RSA517741  Penstemon newberryi subsp. berryi W. K. Parks 1933-07 s.n. Humboldt South Fork Mountain. Comment
  HSC102618  Penstemon newberryi var. berryi M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-28 1605 Humboldt Slopes above Bret Hole and below trail 6E18, 1.5 km SSW of Trinity Summit. 1778 Comment
  JEPS5714  Penstemon newberryi var. berryi W. L. Jepson 1902-7-16 2107 Humboldt Trinity Summit Comment
  JEPS9101  Penstemon newberryi var. berryi Joseph P. Tracy Jul 16-19 1930 8953 Humboldt South Fork Mountain, along summit near Blake lookout Northern Coast Ranges 1706 Comment
  HSC102117  Penstemon procerus var. brachyanthus M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 1021 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  HSC56057  Penstemon procerus var. brachyanthus G. L. Clifton, Terry Griswold 1979-7-31 11687 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1805 Comment
  HSC32679  Penstemon purpusii Thomas W. Nelson 1973-7-10 1029 Humboldt Humboldt/Trinity County line, Mt. Lassic (Signal Peak) 1790 Comment
  NY130492  Penstemon rattanii V. Rattan 06 1879 58 Humboldt 792.5 Comment
  NY641286  Penstemon rattanii F. W. Pennell 1940-7-8 26105 Humboldt Kneeland 670.6 Comment
  HSC70388  Pentagramma triangularis Gail Newton 1980-6-7 143 Humboldt Near Brush Mtn. 1128 Comment
  HSC37673  Pentagramma triangularis R. Sutherland 1976-8-6 28 .6876 Humboldt Whitmore Grove 99 Comment
  UC642256  Perideridia howellii Joseph P. Tracy 1937-8-7 15615 Humboldt 1 mi n Murphy Meadow; Bald Mt. 914 Comment
  UC1222744  Perideridia kelloggii Joseph P. Tracy 1950-10-7 19382 Humboldt e Redwood Creek (on the Trinity Hwy); Berry's Mountain 548 Comment
  HSC98755  Perideridia oregana Cara Witte 2007-7-27 602 Humboldt Forest Service Road 4N32. 1.4 miles north of intersection with Forest Service Road 4N32B. 1560 Comment
  HSC73872  Perideridia parishii subsp. latifolia Gail Newton 1980-7-14 1459 Humboldt Near Last Chance Ridge. 1219 Comment
  UC205465  Perideridia parishii subsp. latifolia Joseph P. Tracy 1919-9-18 5231 Humboldt Trinity Summit Northern Coast Ranges 1828 Comment
  HSC17526  Persicaria maculosa John Warner Hosking 1968-10-10 Humboldt Clam Beach Comment
  UCR13417  Petasites palmatus T. Wetherwax 1973-4-1 730401- 2 Humboldt Old U.S. Hwy 101, just north of Myer's Flat. 152 Comment
  SDSU6621  Phacelia D. F. Howe 1962-5-21 3300 Humboldt 24.5 miles north of garberville on #101. 61 Comment
  RSA167318  Phacelia bolanderi Joseph P. Tracy 1950-6-18 18852 Humboldt Briceland Comment
  RSA30617  Phacelia bolanderi Lincoln Constance, R. C. Rollins 1942-5-20 2999 Humboldt Eel River at Dyerville bridge, two miles north of Weott. 49 Comment
  SEINET12335252  Phacelia californica F. H. Utech, Sato, T.; Ohara, M. 1990-1 90 -303 Humboldt Six Rivers National Forest, 0.5 mi S of CA 199 on French Hill Rd (USFS Rd 411) 150 Comment
  UC24323  Phacelia ciliata var. ciliata J. P. Tracy 1899-4-4 Humboldt Eureka Comment
  HSC30745  Phacelia corymbosa D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5621 Humboldt Mt. Lassic and two smaller peaks to immediate E 1768 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
  HSC58179  Phacelia mutabilis G. L. Clifton 1979-8-2 12263 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  HSC74222  Phacelia mutabilis M. A. Baker 1980-7-23 3189 Humboldt Near Orleans Mtn. 1859 Comment
  JEPS55962  Phacelia mutabilis John Thomas Howell 1937-7-31 13715 Humboldt Boise Creek Comment
  UC526832  Phalaris aquatica Joseph P. Tracy 1927-9-18 8366 Humboldt Carlotta; Northern Coast Ranges, Carlotta 60 Comment
  RSA10051  Phalaris californica Joseph P. Tracy 1925-6-7 7085 Humboldt On Lord Ellis Road, on Bald Mountain 610 Comment
  UC186003  Phalaris minor J. P. Tracy 1912-10-20 3994 Humboldt near Loleta Pond (Eel River Valley); , near Loleta Pond 15 Comment
  CAS-BOT-BC76573  Philadelphus lewisii Alice Eastwood 1921-7-21 10655 Humboldt Carlotta Comment
  SEINET200857  Philadelphus lewisii subsp. gordonianus Joseph P. Tracy 1937-6-20 15355 Humboldt Bear River, ten miles upstream from the mouth. 152 Comment
Read comments
Oct 8 2018
  UC188863  Phleum alpinum Joseph Burtt Davy 1899-7-30 6198 Humboldt Russ Ranch Comment
  UC962098  Phleum alpinum Joseph P. Tracy 1934-7-2 13294 Humboldt Trinidad 3 Comment
  HSC49981  Phlox adsurgens M. A. Baker 1979-6-7 779 Humboldt N bank of road to Snow Mtn. 610 Comment
  HSC41243  Phlox diffusa Brad Klipfel 1974-5-27 385 Humboldt Horse Mtn. Comment
  HSC56081  Phlox diffusa G. L. Clifton, Griswold 1979-7-31 11765 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa. 1845 Comment
  JEPS42597  Phoradendron villosum Lincoln Constance 1934-5-29 737 Humboldt Bull Creek Region, S. Fork Eel R., Upper Look Prairie 365 Comment
  HSC62753  Phyllospadix scouleri J. M. DiTomaso 1979-4-21 900 Humboldt Elks Head near Trinidad Comment
  UC535001  Phyllospadix torreyi H. E. Parks 1933-11-12 Humboldt Spruce Cove Trinidad Comment
  JEPS44661  Physocarpus capitatus W. L. Jepson 1936-8-13 17894 Humboldt S Fork Eel River Philipsville (Franklin K. Lane grove) Comment
  UC203837  Physocarpus capitatus Joseph P. Tracy 1918-9-29 5114 Humboldt 4 mi above mouth South Fork of Eel River; Northern Coast Ranges 60 Comment
  CHSC81  Picea sitchensis M. Anthony 1960-5-14 Humboldt Near Arcata. Comment
  NY34414  Picea sitchensis L. Abrams 1916-7-18 6131 Humboldt Arcata to Trinidad Comment
  UC136  Picea sitchensis J. P. Tracy 1901-4-17 Humboldt Samoa, Humboldt Bay 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
  HSC1483  Pinus contorta R. I. Bonn 1965-5-9 46 Humboldt 4 mi. W of Arcata on Lanphere Rd. Comment
  HSC31517  Pinus contorta Steve Selva, Roger Jensen 1974-8-28 92 Humboldt Approx. 5 mi. S of Arcata on the Samoa Peninsula Comment
  RSA175259  Pinus contorta var. contorta Robert F. Thorne 1957-9-3 19017 Humboldt Patrick s Point State Park. Comment
  OBI36538  Pinus jeffreyi David J. Keil 1983-7-2 17315 Humboldt Ca. 4 mi SE of SR 299 along Titlow HIll rd below Horse Mtn Summit Rd Comment
  CAS-BOT-BC73116  Pinus lambertiana C. D. Duncan 1920-9-1 s.n. Humboldt East side of Hoope Valley Comment
  CAS-BOT-BC78981  Pinus muricata Elmer I. Applegate 1931-3-28 6626 Humboldt Near and north of Trinidad Comment
  UC666983  Piperia unalascensis Joseph P. Tracy 1933-7-25 12880 Humboldt Grouse Mountain 1524 Comment
  HSC24556  Pityopus californicus Rudolf W. Becking 1972-6-30 720608 Humboldt Fish Lake area, Orleans 762 Comment
  CAS-BOT-BC227991  Plagiobothrys Doris Kildale 1931-5-10 10565 Humboldt Snow Camp Comment
  JEPS61016  Plagiobothrys Joseph P. Tracy 1942-6-15 Humboldt Garberville 304 Comment
  HSC41226  Plagiobothrys cognatus Thomas W. Nelson, Jane P. Nelson 1977-6-14 3496 Humboldt Above Alder Springs 1585 Comment
  UC526810  Plagiobothrys nothofulvus Joseph P. Tracy 1932-5-1 9861 Humboldt near Garberville; North Coast Ranges, Redway 182 Comment
  HSC63979  Plagiobothrys nothofulvus J. P. Smith, J. O. Sawyer 1973-5-12 6679 Humboldt 3.3 mi. from Redwood Creek on Hoopa Rd. Comment
  JEPS60982  Plagiobothrys reticulatus var. reticulatus Joseph P. Tracy 1909-5-2 2960 Humboldt Eureka Northern Coast Region 0 Comment
  JEPS68130  Plagiobothrys tenellus Joseph P. Tracy 1921-4-24 5649 Humboldt Phillipsville, facing South Fork of Eel River Northern Coast Ranges 121 Comment
  RSA18012  Plantago hirtella var. galeottiana Carl B. Wolf 1927-8-22 781 Humboldt Big Lagoon. Comment
  HSC67528  Plantago lanceolata J. P. Smith, Steve Selva 1970-6-14 3838 Humboldt Along Hwy. 96 at Whitmore Creek. 152 Comment
  HSC89612  Plantago lanceolata M. Roantree 1985-5-24 61 Humboldt E side of Trinidad Head Comment
  RSA68979  Plantago maritima F. W. Peirson 1923-7-11 3857 Humboldt Flats north of Eureka. Comment
  HSC53868  Platanthera dilatata Griswold, Butler 1979-7-10 6348 Humboldt Near Board Camp Mtn., close to the town of Willow Creek 1372 Comment
  SEINET10297967  Platanthera dilatata var. dilatata Unknown 1965-8-9 s.n. Humboldt BIG LAGOON: Elev. c. 10 ft Comment
  HSC53951  Platanthera sparsiflora Griswold, Butler 1979-7-11 7001 Humboldt Near Snow Camp Lake, close to the town of Willow Creek. 1393 Comment
  HSC16800  Platystemon californicus Jack Rockwell 1962-5-4 49 Humboldt Lone Star Junction 549 Comment
  SEINET3124150 Image available Platystemon californicus Joseph P. Tracy 1904-5-1 2047 Humboldt Region about Humboldt Bay, sandy field at Bucksport 0 Comment
  UC146079  Platystemon californicus Joseph P. Tracy 1904-4-24 2034 Humboldt sand dunes of Ocean Beach Ocean Beach (Humboldt Bay); Northern Coast Region, , Ocean Beach Comment
  UC146097  Platystemon californicus Joseph P. Tracy 1904-5-1 2047 Humboldt Bucksport; Northern Coast Region, Region about Humboldt Bay 0 Comment
  UC602530  Plectritis brachystemon Joseph P. Tracy 1936-5-29 14823 1/2 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
  HSC21691  Plectritis congesta subsp. brachystemon Jack Rockwell 1962-5-4 51 Humboldt E of road along stream bank. 549 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
  HSC45385  Pleuricospora fimbriolata R. York 1978-5-20 174 Humboldt Along Bluff Creek trail. 610 Comment
  UC1258214  Pleuropogon refractus Paul But 1975-6-1 P 12 Humboldt about 3 mi n of Eureka (along Jacoby Creek Road); Jacoby Creek Comment
  RSA10113  Poa Joseph P. Tracy 1930-7-19 9053 Humboldt South Fork Mountain; along summit near Blake lookout. 1738 Comment
  HSC26347  Poa annua T. O. Osborne 1970-4-5 78 Humboldt Flat-iron rock, 3/4 mi. NW of Trinidad Lighthouse. Comment
  UC1607848  Poa annua Harold E. Parks June 1933 4317 Humboldt Spruce Cove Trinidad Comment
  RSA10141  Poa bolanderi Joseph P. Tracy 1932-7-12 10464 Humboldt Klamath Mountains, Trinity Summit, Head of Brett Hole 1829 Comment
  HSC10676  Poa confinis J. W. Johnson 1962-5-10 1340 Humboldt Arcata, Christenson Farm, Samoa Peninsula. Comment
  HSC74676  Poa cusickii subsp. epilis Gail Newton 1981-5-16 2176 Humboldt Near Bug Creek. 1228 Comment
  OBI35877  Poa douglasii David J. Keil 1983-7-1 17286 Humboldt Ca. 5 mi NW of Petrolia along Mattlole Rd Comment
  UC34125  Poa howellii Joseph Burtt Davy and Walter C. Blasdale 1899-6-13 5516 Humboldt near Pepperwood Pepperwood Comment
  HSC77908  Poa macrantha L. P. Janeway, Paul Wilson 1984-5-7 766 Humboldt N Spit of Humboldt Bay, on BLM lands near the Coast Guard Station 3 Comment
  HSC75699  Poa pratensis Bill Copeland 1980-6-26 565 Humboldt Near Snow Camp Lake 1372 Comment
  UC1132739  Poa pratensis subsp. pratensis H. L. Person 1932-5-11 Humboldt Arcata; Eureka Quadrangle Comment
  RSA63625  Poa secunda Milo S. Baker s.n. Humboldt Near Yager Comment
  CAS-BOT-BC235982  Poa secunda subsp. secunda Joseph P. Tracy 1932-7-17 10693 Humboldt Klamath Mountains. Head of Devil's Hole 1828 Comment
  UC525661  Poa secunda subsp. secunda Joseph P. Tracy 1932-7-17 10693 1/2 Humboldt head of Devil's Hole Trinity Summit; Klamath Mts 1828 Comment
  RSA129470  Poa trivialis H. S. Yates 1936-6-16 5683 Humboldt Near Bayside 9 Comment
  CAS-BOT-BC244206  Poa unilateralis Joseph P. Tracy 1927-6-8 8113 Humboldt Trinidad. Bluffs facing ocean Comment
  HSC17229  Polygala californica Paul Shields 1955-6-12 Humboldt 6 mi. W of Myers Flat Comment
  UC672967  Polygonum davisiae Joseph P. Tracy 1935-7-30 14383 Humboldt Salmon Summit 2103 Comment
  HSC55160  Polygonum douglasii Gilbert Muth 1979-8-1 12122 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1677 Comment
  UC205478  Polygonum douglasii subsp. douglasii Joseph P. Tracy 1919-9-18 5236 Humboldt Trinity Summit Northern Coast Ranges 1828 Comment
  UC1222470  Polygonum douglasii subsp. spergulariiforme Joseph P. Tracy 1912-7-31 3941 Humboldt Buck Mountain Northern Coast Ranges (near summit) 1676 Comment
  UC146190  Polygonum douglasii subsp. spergulariiforme Joseph P. Tracy 1908-7-1 2888 Humboldt ridge between Van Duzen River and Mad River (near Low Gap, Humboldt and Trinity Cos.); Northern Coast Ranges 609 Comment
  BLMAR616  Polygonum paronychia Jennifer Wheeler 2011-5-20 616 Humboldt King range, Below Strawberry Rock along Mattole dunes 7 Comment
  CAS-BOT-BC109177  Polygonum paronychia Doris K. Kildale 1927-5-15 3165 Humboldt Beach at Cape Mendocino. Comment
  CAS-BOT-BC109187  Polygonum paronychia D. E. Breedlove 1962-6-7 3035 Humboldt 1.5 mile south of Samoa on peninsula on western side of Humboldt Bay. Comment
  HSC17511  Polygonum paronychia Jerry Parker 1968-11-22 245 Humboldt Mckinleyville Beach, Foot of Murray Rd. Comment
  SEINET2153798  Polygonum paronychia K. T. Harper 2002-1 2002 -2 Humboldt Trinidad Beach. Comment
  JEPS50637  Polygonum persicaria Lincoln Constance 1934-6-12 861 Humboldt Bull Cr. road and N. bank of river; South Fork Eel River, Bull Creek Region Comment
  RSA244991  Polygonum persicaria Norman Dennis 1965-6-8 109 Humboldt Samoa Peninsula along the W side of the Humboldt Bay. Comment
  UC1052470  Polygonum sachalinense H. E. and S. T. Parks July 1952 24448 Humboldt Hwy 10 s Elk River Bridge Comment
  RSA689951  Polypodium californicum Charlotte M. Hoak 1936-8-15 104 Humboldt Patricks Point Comment
  SEINET200792 Image available Polypodium californicum Joseph P. Tracy 1932-3-20 9784 Humboldt Trinidad 61 Comment
  HSC1101  Polypodium californicum Paul Shields Apr 1955 Humboldt 5 mi. N of Arcata Comment
  CHSC53230  Polypodium glycyrrhiza L. P. Janeway 1984-12-5 1194 Humboldt On the North Spit of Humboldt Bay; on the west side of Samoa Rd near the boat ramp. 4 Comment
  UC275412  Polypodium glycyrrhiza Joseph P. Tracy 1925-11-25 7326 Humboldt near the S Fork Trinity River Valley; Northern Coast Ranges 182 Comment
  SDSU3597  Polypodium glycyrrhiza H. E. Parks 1924-6-1 2837 Humboldt Lawrence Creek, on trees. Comment
  UC667949  Polypodium glycyrrhiza Joseph P. Tracy 1936-3-8 14775 Humboldt along S Fork Eel River Miranda 121 Comment
  CAS-BOT-BC72082  Polypodium scouleri Ira L. Wiggins 1930-7-11 4686 Humboldt near Samoa Comment
  CHSC19517  Polypodium scouleri J. F. Knezevich 1968-5-13 429 Humboldt Collected near Arcata above Freshwater Forest. Comment
  JEPS93138  Polypodium scouleri M. Wetherwax 1992-5-20 2434 Humboldt Patrick's Point State Park. Coastal bluff S side of Wedding Rock 30 Comment
  HSC1116  Polypodium scouleri Gene S. Van Horn 1962-5-26 33 Humboldt 250 E 17th St., Arcata 61 Comment
  HSC1130  Polypodium scouleri W. R. Supernaugh, Jr. 1964-12-11 14 Humboldt 300 yards S of Trinidad Harbor 9 Comment
  HSC62871  Polypogon monspeliensis J. M. DiTomaso 1979-4-21 887 Humboldt Clam Beach. Comment
  UC1714513  Polypogon monspeliensis Joseph P. Tracy 1916-5-31 4692 Humboldt along Eel River from South Fork to Scotia Holmes Flat; Northern Coast Ranges, along Eel River 60 Comment
  UC1440060  Polystichum Danin & H. G. Baker 1960-8-14 614 b Humboldt ca. 1 mi toward Garberville from Myers Flat (Nelson Grove); Humboldt Redwoods State Park Comment
  UC1440056  Polystichum californicum Danin & H. G. Baker 1960-8-13 604 Humboldt ca. 2 mi n Dyerville (High Rock (w side of Eel River), along Ave. of Giants) Comment
  UC1440063  Polystichum californicum Danin & H. G. Baker 1960-8-14 614 a Humboldt ca. 1 mi toward Garberville from Myers Flat (Nelson Grove); Humboldt Redwoods State Park Comment
  RSA693352  Polystichum dudleyi J. Hickman 1882-1 s.n. Humboldt Near Cape Mendocino. Comment
  HSC73633  Polystichum imbricans M. Baker 1980-7-23 3178 Humboldt Near Orleans Mtn. 1859 Comment
  HSC13046  Polystichum munitum Jana Kattenhorn 1970-10-24 123 Humboldt HSU campus S of Building 52 Comment
  HSC79181  Polystichum munitum C. J. Thomas 1984-9-25 116 Humboldt In Redwood forest immediately behind HSU fieldhouse 79 Comment
  HSC54558  Polystichum scopulinum Overton, Butler 1979-7-24 9567 Humboldt Near Titlow Hill, close to the town of Willow Creek 1097 Comment
  SBBG88770  Potamogeton natans A. Keedy 1988-9-20 12 Humboldt off Alder Grove Rd, N of Arcata, near Hwy 299, Arcata Salt Marsh Project Comment
  CHSC68558  Potentilla anserina subsp. pacifica Vernon H. Oswald 1997-4-29 8349 Humboldt Shorebird Loop Trail between the trailhead and Lond Pond, Humboldt Bay NWR. Along the trail. 0 Comment
  HSC95655  Potentilla anserina subsp. pacifica Andrea Pickart 2002-4-22 52 Humboldt Lanphere Dunes, upper edge of Mad River Slough 10 Comment
  HSC97733  Potentilla anserina subsp. pacifica Kevin Thomas 2004-4-7 12 Humboldt Z St., along McDaniel slough Comment
  UC183755  Potentilla gracilis var. gracilis Joseph P. Tracy 1912-7-26 3875 Humboldt Kneeland Prairie Northern Coast Ranges, Kneeland Prairie 762 Comment
  HSC71584  Prosartes hookeri Gail Newton 1980-6-16 191 Humboldt Near Onion Mtn. 1280 Comment
  CAS-BOT-BC517511  Prosartes smithii Myrtle Paulson 1918-4-28 s.n. Humboldt Eureka Comment
  HSC60293  Prosartes smithii Phyllis Krieg 1979-4-28 Humboldt Azalea Park along trail, McKinleyville 30 Comment
  CDA5736  Prunella vulgaris T. C. Fuller 1958-6-17 596 -58 Humboldt Wildcat Ridge near Bunker Hill. 0 Comment
  SEINET13947097 Image available Prunella vulgaris W. J. Ferlatte, B. D. Rogers 1966-1 2083 Humboldt 1 mi E of Forest Glen; 2400 ft alt., T29E, R8E, SEC19 732 Comment
  HSC39157  Prunella vulgaris subsp. lanceolata D. E. Anderson, J. P. Smith 1971-6-28 - 1266 Humboldt 2.5 mi. S of Blue Lake along the Mad River Comment
  HSC48746  Prunus emarginata Brad Klipfel 1973-6-10 83 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC57014  Prunus emarginata Overton, Butler 1979-7-24 9614 Humboldt Near Titlow Hill, close to the town of Willow Creek. 1250 Comment
  HSC58063  Prunus emarginata G. L. Clifton, Griswold 1979-8-1 11940 Humboldt Near Mill Creek Lakes, close to the town of Hoopa. 1692 Comment
  UC492200  Prunus emarginata Joseph P. Tracy 1932-7-15 10603 Humboldt Ridges e of Corral Prairie (Trintiy Summit, Klamath Mountains); Klamath Mountains, Trintiy Summit 1828 Comment
  CDA3914  Prunus laurocerasus Gordon Leppig 2000-4-12 1291 Humboldt Behind Humboldt University, west of Fern Lake, Arcata. Comment
  UC604671  Pseudognaphalium californicum Joseph P. Tracy 1938-6-20 15971 Humboldt Willow Creek Trinity River Valley, Willow Creek 152 Comment
  JEPS20481  Pseudognaphalium stramineum Joseph P. Tracy 1937-8-3 15614 Humboldt near Blue Lake; Mad River 15 Comment
  HSC74279  Pseudotsuga menziesii var. menziesii M. A. Baker 1980-5-23 1398 Humboldt Near Buck Mtn. 1524 Comment
  HSC74451  Pseudotsuga menziesii var. menziesii Gail Newton 1980-8-10 1991 Humboldt Near Blake Mtn. 1798 Comment
  UC1198276  Pseudotsuga menziesii var. menziesii Joseph P. Tracy 1922-10-22 6132 Humboldt between High Prairie and Snow Camp; Bald Mountain 1066 Comment
  UCD135129  Pseudotsuga menziesii var. menziesii P. Zinke 1950-8-3 145 Humboldt California Forest and Range Experiment Station. 3 miles south of Harris. Comment
  HSC77905  Psilocarphus brevissimus var. brevissimus L. P. Janeway, Paul Wilson 1984-5-25 831 Humboldt N Spit of Humboldt Bay, BLM lands near the Coast Guard Station 5 Comment
  UC1223166  Psilocarphus tenellus Joseph P. Tracy 1950-6-29 18937 Humboldt 6 mi se Arcata; Fickle Hill 609 Comment
  UC1222913  Psilocarphus tenellus Joseph P. Tracy 1946-6-23 17597 Humboldt se end Kneeland Prairie (near the old Dan McBride place) 762 Comment
  UC1223165  Psilocarphus tenellus Joseph P. Tracy 1948-6-13 18056 Humboldt 3 mi w Harris 762 Comment
  RSA170261  Psilocarphus tenellus var. tenellus Joseph P. Tracy 1917-5-27 4783 Humboldt At Eureka. 0 Comment
  UCD18378  Psoralea micrantha Bryant Washburn 1974-7-8 s.n. Humboldt 12 miles west of Winnemucca, Milepost 519.75, at Raglan siding, in ballast section along Western Pacific Railroad tracks. Comment
  HSC46092  Pteridium aquilinum var. pubescens J. P. Smith, Steve Selva 1970-6-14 3855 Humboldt Along Hwy. 96 at Whitmore Creek 152 Comment
  UCD39989  Pteridium aquilinum var. pubescens Rodney Gale Myatt 1971-9-21 1187 Humboldt Near Orleans, northeast of Hoopa Reservation, and along Klamath River. 426 Comment
  SEINET11722268  Pteridium aquilinum var. pubescens C. S. Kaut 2000-1 3 Humboldt Trinidad Comment
  CAS-BOT-BC460505  Pterospora andromedea Doris K. Kildale 1927-7-23 3794 Humboldt Hoaglin Lake, near Lasseck's Peaks 1524 Comment
  UC672932  Pterostegia drymarioides Joseph P. Tracy 1933-5-20 12226 Humboldt s point of cape; Cape Mendocino 3 Comment
  HSC10868  Puccinellia nutkaensis J. A. Waller 1965-5-16 38 Humboldt Humboldt Bay Comment
  OBI22190  Puccinellia nutkaensis Joseph P. Tracy 1950-6-17 18834 Humboldt Eureka Comment
  CAS-BOT-BC460603  Pyrola aphylla Doris K. Kildale 1926-6-17 2166 Humboldt Kneeland Prairie 762 Comment
  HSC45426  Pyrola dentata Thomas W. Nelson, Jane Nelson 1977-7-1 3549 Humboldt Ridge between Bear and Blanket Creeks Comment
  HSC55032  Pyrola picta Overton, Butler 1979-7-31 11471 Humboldt Near N Trinity Mtn., close to the town of Hoopa 1940 Comment
  CAS-BOT-BC466033  Pyrola picta Doris Kildale Gillespie 1931-6-7 10658 Humboldt South Fork Mt., Black Lookout 1726 Comment
  UC1326244  Pyrola picta Milo S. Baker 1947-8-10 11908 Humboldt near end of Forest Rd. from Hoopa toward Trinity Summit 1371 Comment
  HSC41321  Quercus chrysolepis Brad Klipfel 1974-9-2 526 Humboldt Horse Mountain Comment
  HSC70748  Quercus chrysolepis R. York 1980-5-17 535 Humboldt Near Le Perron Peak 1066 Comment
  UC1193294  Quercus chrysolepis R. H. Neuns 1950-10-12 140 Humboldt Queens Peak 701 Comment
  UC203862  Quercus chrysolepis Joseph P. Tracy 1918-9-29 5109 Humboldt 4 mi above mouth of South Fork Eel River; North Coast Ranges, South Fork Eel River 60 Comment
  CAS-BOT-BC94310  Quercus garryana Joseph P. Tracy 1941-3-26 16845 Humboldt South Fork of Trinity River: mountain slopes W of its mouth Comment
  UC1541341  Quercus garryana H. E. Parks, J. P. Tracy 1930-9-15 764 Humboldt Kneeland Prairie Bald Hills Comment
  UC419047  Quercus garryana H. E. Parks, J. P. Tracy 1930-9-15 764 Humboldt Bald Hills Kneeland Comment
  CAS-BOT-BC62727  Quercus garryana var. breweri Doris K. Kildale 1926-9-5 2631 Humboldt Head of Red Lassecks huk. Lasseck's Peaks 1676 Comment
  CAS-BOT-BC62728  Quercus garryana var. breweri Doris K. Kildale 1926-8-22 2573 Humboldt Bald hills, near Tomlinson's 716 Comment
  CAS-BOT-BC105165  Quercus kelloggii Doris K. Kildale 1928-3-31 4384 Humboldt 3 miles N of Gaberville on Redwood Highway Comment
  UCD46693  Quercus kelloggii R. N. Raynor 1935-4-15 s.n. Humboldt Fort Seward. Comment
  SEINET3823284 Image available Quercus sadleriana Joseph P. Tracy 1947-8-24 17909 Humboldt Trinity Summit, Box Camp 1524 Comment
  UC1225942  Quercus sadleriana Joseph P. Tracy 1947-8-24 17909 Humboldt near Box Camp; Trinity Summit 1524 Comment
  CAS-BOT-BC104533  Quercus vacciniifolia R. Spellenberg 1990-7-10 10245 Humboldt Extreme E edge county, 8 mi WSW of Sayler at 6 mi S of Berry Summit (on Calif. Hwy. 299) on USFS 1 1371 Comment
  HSC41254  Quercus vacciniifolia Brad Klipfel 1974-6-25 444 Humboldt Horse Mtn. Comment
  HSC55117  Quercus vacciniifolia Gilbert Muth 1979-8-1 11892 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1877 Comment
  SBBG111333  Quercus vacciniifolia J. M. Tucker 1948-9-3 1851 Humboldt House Mtn at jct of rd to Grouse Mtn and rd to Horse Mtn Mine 1463 Comment
  UC164804  Rafinesquia californica Joseph P. Tracy 1901-8-2 1243 Humboldt near Hydesville; Northern Coast Region 60 Comment
  UC1103013  Ranunculus alismifolius var. alismellus Joseph P. Tracy 1932-7-15 10588 Humboldt ridges e Corral Prairie; Klamath Mountains, Trinity Summit 1828 Comment
  CAS-BOT-BC379175  Ranunculus aquatilis var. aquatilis Doris K. Kildale 1926-4-18 1769 Humboldt McClellan Mountain Comment
  UC668068  Ranunculus aquatilis var. hispidulus Joseph P. Tracy 1937-5-30 15311 Humboldt shallow pond near Bosworth's; Larrabee Creek 365 Comment
  UC1103018  Ranunculus arvensis Joseph P. Tracy 1940-5-17 16554 Humboldt Buck Mountain; lower foothills of nw slope 762 Comment
Read comments
Jun 18 2011
  UC1196236  Ranunculus californicus Joseph P. Tracy 1912-5-5 3578 Humboldt Eureka Northern Coast Region 0 Comment
  UC162875  Ranunculus californicus Joseph P. Tracy 1901-4-26 1044 Humboldt e Fields Landing; Northern Coast Region, Region about Humboldt Bay, Humboldt H 0 Comment
  CAS-BOT-BC378925  Ranunculus californicus var. californicus Alice Eastwood 1907-4-21 27 Humboldt Trinidad Comment
  HSC26468  Ranunculus californicus var. cuneatus T. O. Osborne 1970-4-8 7 Humboldt Sugarloaf Rock, Cape Mendocino 76 Comment
  UC1103010  Ranunculus flammula Joseph P. Tracy 1930-8-3 9149 Humboldt pond near Little Van Duzen River; Northern Coast Ranges, Buck Mountain 762 Comment
  JEPS55004  Ranunculus occidentalis Lincoln Constance 1934-5-24 645 Humboldt Bull Creek Region South Fork Eel River 121 Comment
  UC1196235  Ranunculus occidentalis Joseph P. Tracy 1902-6-3 1671 Humboldt ridge between Harris and Fruitland; Northern Coast Ranges 762 Comment
  HSC36501  Ranunculus occidentalis var. occidentalis Thomas W. Nelson, Jane P. Nelson, James Nelson 1975-6-14 1890 Humboldt Beside branch off FS 2S08 to Pine Mtn. Comment
  HSC18167  Ranunculus occidentalis var. occidentalis Lincoln Constance 1934-5-24 645 Humboldt S Fork Eel River 122 Comment
  SEINET180820  Ranunculus occidentalis var. rattanii Bassett Maguire, R Maguire; C. B. Maguire 1934-6-9 15179 Humboldt Clam Beach 15 mi N of Eureka Comment
  HSC90641  Ranunculus repens Gail Newton 1982-6-10 3613 Humboldt Elk River Wildlife Area, Eureka Comment
  POM87678  Ranunculus repens L. R. Abrams, Rimo Bacigalupi 1922-6-25 8276 Humboldt Big Lagoon S of Quick Comment
  UC1196270  Ranunculus uncinatus Joseph P. Tracy 1916-5-7 4687 Humboldt Eureka Northern Coast Ranges 0 Comment
  UC502929  Ranunculus uncinatus Joseph P. Tracy 1932-7-10 10394 Humboldt Corral Prairie Klamath Mountains, Trinity Summit 1524 Comment
  HSC39793  Raphanus sativus Peter Sorensen 1976-6-8 Humboldt N Spit Comment
  RSA390632  Rhamnus purshiana Christopher Davidson 1973-5-29 2203 Humboldt 2 miles S of Carlotta on Hwy 36 61 Comment
  UC175733  Rhamnus purshiana Joseph P. Tracy 1912-9-1 3983 Humboldt Eureka Northern Coast Region 0 Comment
  UC199231  Rhamnus purshiana V. King Chesnut Jul 1888 Humboldt Mad River Comment
  JEPS42034  Rhamnus rubra Lincoln Constance 1934-6-4 814 Humboldt Look Prairie, and Bull Creek road to Dyerville South Fork Eel River, Bull Creek Region Comment
  SEINET7716093  Rhododendron californicum Unknown Humboldt Humboldt Bay Comment
  HSC7835  Rhododendron columbianum J. F. Knezevich 1967-5-23 452 Humboldt N of Trinidad at Big Lagoon 15 Comment
  SD56746  Rhododendron macrophyllum Darley F. Howe 1963-5-26 3552 Humboldt 3.2 miles east of Orick on Bald Hill Road. 459 Comment
  CAS-BOT-BC200382  Rhododendron occidentale var. paludosum Doris K. Kildale 1926-8-22 2579 Humboldt French Camp on Orick-Martin's [Martins] Ferry road 731 Comment
  HSC35751  Rhododendron occidentale var. paludosum Thomas W. Nelson, Jane P. Nelson, James Nelson 1975-7-15 1995 Humboldt French Camp, Bald Hills. Comment
  RSA471005  Rhododendron occidentale var. paludosum Hutchinson 1927-05 Humboldt [No location data on label.] Comment
  CAS-BOT-BC433140  Ribes W. R. Dudley 1899-6-21 s.n. Humboldt Near Pepperwood Comment
  UC535710  Ribes Eleanor Armstrong 1934-8-23 1153 Humboldt Richardson Grove 121 Comment
  CAS-BOT-BC433129  Ribes Milo S. Baker 1926-7-26 186 -'26 Humboldt Bridgeville-Red Bluff Highway, S. Fork Mt. 1066 Comment
  UC667065  Ribes binominatum Joseph P. Tracy 1933-7-11 12696 Humboldt Grouse Mountain 1524 Comment
  UC161565  Ribes bracteosum Joseph P. Tracy 1911-6-4 3216 Humboldt 5 mi from coast; Northern Coast Region, Little River 121 Comment
  UC667031  Ribes bracteosum Joseph P. Tracy 1938-8-14 16105 Humboldt along Trinity Highway Willow Creek Canyon 762 Comment
  HSC20290  Ribes divaricatum W. R. Rogers 1966-5-1 243 Humboldt Azella State Reserve Comment
  CAS-BOT-BC176806  Ribes laxiflorum H. E. Parks; S. T. Parks 1937-6-4 24004 Humboldt Along Prairie Creek at Valley Green Comment
  SBBG26907  Ribes laxiflorum H. E. and S. T. Parks 1937-6-4 24004 Humboldt Prairie Crk at Valley Green Comment
  CAS-BOT-BC173360  Ribes lobbii Henry M. Pollard 1946-9-2 s.n. Humboldt Orleans Mt. 1524 Comment
  HSC31135  Ribes lobbii J. O. Sawyer 1970-6-24 2268 Humboldt S of Mill Creek Gap, FS Rd. 10N02 1433 Comment
  UC1198925  Ribes lobbii Joseph P. Tracy 1936-8-8 15139 Humboldt ne Hawkins Bar.; Trinity Summit Range, Happy Camp Mountain 1280 Comment
  UC1198926  Ribes lobbii Joseph P. Tracy 1932-7-17 10666 Humboldt ridges e Corral Prairie; Klamath Mountains, Trinity Summit 1828 Comment
  HSC102610  Ribes marshallii M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-28 1597 Humboldt Slopes above Bret Hole and below trail 6E18, 1.5 km SSW of Trinity Summit. 1778 Comment
  HSC74200  Ribes marshallii M. A. Baker 1980-7-19 3033 Humboldt Near Bret Hole. 1814 Comment
  CAS-BOT-BC206045  Ribes menziesii L. R. Abrams 1916-7-11 6033 Humboldt Mouth of Grizzly Creek on Van Duzon [Duzen] River Comment
  RSA0021767  Ribes menziesii Joseph P. Tracy 1948-3-6 17954 Humboldt Trinidad. 61 Comment
  RSA0021780  Ribes menziesii Elmer I. Applegate 1931-3-28 6625 Humboldt Trinidad. [label says Mendocino but should be Humboldt Co.] Comment
  UC667068  Ribes roezlii var. cruentum Joseph P. Tracy 1937-3-27 15240 Humboldt near Blue Lake; Mad River 15 Comment
  HSC22511  Ribes sanguineum D. E. Anderson 1964-4-24 3540 Humboldt 0.5 mi. from junction of Hwy. 299 along Titlow Hill Rd. Comment
  UC1222367 Image available Ribes sanguineum Joseph P. Tracy 1950-5-7 18649 Humboldt head South Yager River Comment
  UCD102487  Ribes sanguineum G. F. Hrusa 1992-5-5 10436 Humboldt Cedar Camp Rd. approximately 10 m. west of Orleans. Mile 9.0. 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
  CAS-BOT-BC144678  Ribes sanguineum var. glutinosum Doris K. Kildale 1928-5-1 5987 Humboldt MacLillan Mountain 914 Comment
  CAS-BOT-BC144696  Ribes sanguineum var. glutinosum Doris K. Kildale 1927-5-13 3137 Humboldt Redwood Creek at Berry's 289 Comment
  HSC59439  Ribes sanguineum var. glutinosum Kenneth Clark 1979-4-2 22 Humboldt 0.1 mi. E of end of Granite Ave, Arcata 30 Comment
  HSC103229  Ribes sanguineum var. sanguineum Jade Paget-Seekins 2010-6-23 26 Humboldt Horse Mountain. Slightly less than 10 miles up Titlow Hill Road, on Forest Route 1. Near 'Road Narrows' sign. 1558 Comment
  RSA0018246  Ribes sanguineum var. sanguineum Thomas W. Nelson 1977-6-15 3426 Humboldt Along Forest Road 5N10 just north of junction with Road 6N08. 1372 Comment
  CHSC97983  Ribes viscosissimum April A. Allard; Gregory D. O'Connell 2005-6-15 13 Humboldt NE of Grouse Mtn. Roadside. 5339 Comment
  JEPS48557 Image available Ribes viscosissimum Hilda W. Grinnell 1932-7-9 6 Humboldt below McKay Camp; So. Fork Mt. Comment
  UC702003  Romanzoffia tracyi Harold E. Parks March 1946 24276 Humboldt ocean bluffs at Trinidad Head Comment
  HSC44064  Rorippa curvisiliqua Thomas W. Nelson, Jane P. Nelson 1977-6-19 3506 Humboldt Above Alder Springs 1585 Comment
  HSC99388  Rorippa nasturtium-aquaticum K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-6-28 37 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  UC302164  Rosa Joseph P. Tracy 1925-6-21 7128 Humboldt Blue Slide Northern Coast Ranges, Van Duzen River 91 Comment
  CAS-BOT-BC147437  Rosa californica Joseph P. Tracy 1941-6-29 16965 Humboldt Buck Mountain 762 Comment
  OBI5836  Rosa eglanteria Carl B. Wolf 1931-8-28 2363 Humboldt 1/8 mi from Rohnerville on road to Fortuna 30 Comment
  CAS-BOT-BC146477  Rosa gymnocarpa John McLaren 1920-9-1 s.n. Humboldt unspecified Comment
  CAS-BOT-BC146487  Rosa gymnocarpa Doris K. Kildale 1927-5-13 3176 Humboldt Redwood Creek at Berry's 289 Comment
  HSC19635  Rosa gymnocarpa G. N. Bos 1965-5-15 263 Humboldt 4 mi. W of Berry Summit, along Hwy. 299 671 Comment
  HSC76239  Rosa gymnocarpa Teresa Prendusi 1981-7-9 187 Humboldt Near Cedar Camp. 1268 Comment
  HSC99305  Rosa gymnocarpa C. B. Wolf 1927-8-30 1232 Humboldt 2 mi. S of Petrolia on the Matole River near the road crossing the river Comment
  UC162330  Rosa gymnocarpa Joseph P. Tracy 1911-7-7 3428 Humboldt Brannan Mountain Northern Coast Ranges (viz ridge n of Willow Creek, between Willow and Campbell Creeks, near summit) 1219 Comment
  UC467683  Rosa gymnocarpa Mrs. M. H. Manning 1901-6-7 61 Humboldt Hupa Comment
  CAS-BOT-BC146829  Rosa nutkana Doris K. Kildale 1927-7-10 3724 Humboldt Gans Prairie on Bald Hills road 609 Comment
  CAS-BOT-BC146840  Rosa nutkana Volney Rattan 1878-1-1 s.n. Humboldt Mad River Comment
  HSC19644  Rosa nutkana Harvey Doerksen 1962-5-22 29 Humboldt 100 W Azalea Reserve State Park Comment
  HSC31560  Rosa nutkana Glenn McGourty 1974-6-1 77 Humboldt Comment
  HSC98782  Rosa nutkana Cara Witte 2008-6-27 770 Humboldt Approximately 1/2 mile north of White Oak Opening on National Forest 1. 1242 Comment
  JEPS45642  Rosa nutkana var. nutkana Joseph P. Tracy 1923-6-22 6345 Humboldt Angels Ranch Bald Mt.; Northern Coast Ranges, Bald Mt. 457 Comment
  UC12912  Rosa nutkana var. nutkana Harley P. Chandler May, 1901 1198 Humboldt Humboldt Bay North Coast Ranges 30 Comment
  CAS-BOT-BC148343  Rosa pisocarpa Joseph P. Tracy 1947-8-24 17890 Humboldt Trinity Summit, near Box Camp in open fir timber. 1524 Comment
  CAS-BOT-BC146881  Rosa rubiginosa Doris K. Kildale 1925-11-1 1343 Humboldt Big Lagoon Comment
  HSC99308  Rosa rubiginosa C. B. Wolf 1927-8-30 1251 Humboldt 3 mi. S of Thorn along old coast road Comment
  UC673070  Rubus Joseph P. Tracy 1940-10-17 16762 Humboldt near Dyerville (South Fork Station); South Fork Station (near Dyerville) 48 Comment
  BLMAR469  Rubus leucodermis Jennifer Anthony-Wheeler 2004-11-8 469 Humboldt Titlow Hill, growing along Titlow Hill road off Hwy 300 914 Comment
  HSC98453  Rubus leucodermis Gail Newton 1980-8-10 2054 Humboldt Near Blake Mtn. 1707 Comment
  CHSC19737  Rubus parviflorus R. J. Vernimen 1963-5-11 51 Humboldt Clam Beach Lagoons, 10 miles N. of Arcata. Comment
  HSC19661  Rubus parviflorus D. A. Shally 1965-5-15 53 Humboldt Arcata, 1/4 mi. NE of HSC campus on Jolly Giant Creek Comment
  HSC97656  Rubus parviflorus Kevin Thomas 2004-4-26 17 Humboldt Jacoby Creek Rd. Comment
  OBI35883  Rubus parviflorus David J. Keil 1983-7-1 17292 Humboldt Between Ferndale and Bear River Ridge Rd along Mattole Rd Comment
  CHSC61999  Rubus spectabilis J. R. Biddison 1993-4-6 15 Humboldt Elk Prairie campground, Prairie Creek Redwoods State Park. Next to creek. 30 Comment
  JEPS46230  Rubus spectabilis W. L. Jepson 1934-5-7 16708 Humboldt near Big Tree footbridge (Bull Creek); Bull Creek Comment
  POM271106  Rubus spectabilis Lyman D. Benson 1929-7-15 1816 Humboldt Clam Beach, Trinidad. Comment
  UC14181  Rubus spectabilis W. C. Blasdale 1896-5-31 Humboldt Eureka Comment
  UC1301223  Rubus spectabilis Paul C. Hutchison 1966-5-26 2741 Humboldt near U.S. highway 101 (Prairie Creek Redwood Grove State Park); Prairie Creek Redwood Grove State Park 50 Comment
  HSC56343  Rubus ursinus Griswold, Butler 1979-7-10 6268 Humboldt Near Board Camp Mtn., close to the town of Willow Creek 1372 Comment
  UCD17846  Rubus ursinus H. Olmo 8-10 May 1962 62- 33 Humboldt California. Humboldt County: along Route 36 between Grizzly Creek Redwoods State Park and Dinsmore. Comment
  UCD17928  Rubus ursinus H. Olmo; T. S. Mallah 1953-4-3 53 60 Humboldt California. Humboldt County: 0.5 miles south of cemetary alongside highway in Rohnerville. East of airport. Comment
  UCR45827  Rubus ursinus Kenneth Clark 1980-4-18 593 Humboldt North Coast, Shelter Cove. On lower alluvial terrace of Dead Man's Gulch 24 Comment
  HSC45630  Rumex acetosella Diane L. Reed 1978-5-27 138 Humboldt 0.3 mi. up Bair Rd. from Hwy. 299 Comment
  JEPS39930  Rumex maritimus W. L. Jepson 1921-8-7 9329 Humboldt Stone Lagoon Humboldt Coast Comment
  CAS-BOT-BC433703  Rumex occidentalis W. R. Dudley 1899-6-1 s.n. Humboldt Eureka Penninsula [Peninsula] Comment
  CAS-BOT-BC434096  Rumex transitorius L. R. Abrams 1918-6-16 7165 Humboldt Willow Creek Comment
  JEPS51070  Sagina procumbens W. L. Jepson 1921-8-7 9337 Humboldt Stone Lagoon Humboldt Coast, Stone Lagoon Comment
  SD37464  Salix Edith A. Purer 1932-7-30 4677 Humboldt S of Orick, sand dunes Comment
  UC1196671  Salix eastwoodiae Joseph P. Tracy 1935-7-26 14268 Humboldt meadows at Water Dog Lakes; Trinity Summit 1828 Comment
  UC490538  Salix eastwoodiae Joseph P. Tracy 1932-7-16 10647 Humboldt blueberry swamp in McKay Meadow; Klamath Mts., Trinity Summit 1524 Comment
  CAS-BOT-BC103808  Salix exigua W. R. Dudley 1899-6-21 s.n. Humboldt Near forks of Eel River by Dyerville Comment
  CAS-BOT-BC103823  Salix exigua Harold E. Parks 1931-5-14 0964 Humboldt Van Duzen River between Alton and Carlotta 15 Comment
  UC526710  Salix exigua H. E. Parks and Joseph P. Tracy 1934-7-25 11090 Humboldt at Willow Creek Trinity R. Valley; Northern Coast Ranges 152 Comment
  SD989  Salix exigua var. hindsiana Harold E. Parks, Joseph P. Tracey 1931-5-17 971 Humboldt Mouth of Willow Creek at Trinity River 149 Comment
  SD992  Salix exigua var. hindsiana Herold E. Parks 1931-5-14 958 Humboldt Fernbridge, Eel River, on gravel bars 10 Comment
  CAS-BOT-BC104099  Salix hindsiana Harold E. Parks; Joseph P. Tracy 1931-5-17 0969 Humboldt Mouth of Willow Creek at Trinity River 150 Comment
  CAS-BOT-BC104107  Salix hindsiana Carleton R. Ball; Harold E. Parks; Joseph P. Tracy 1932-5-17 01336 Humboldt above Trinity River, 1 mile below bridge on Trinity Highway 152 Comment
  CAS-BOT-BC107735  Salix hookeriana Harold E. Parks 1931-5-28 999 Humboldt Little River Lagoon Comment
  CAS-BOT-BC107760  Salix hookeriana Harold E. Parks 1931-5-28 0999 Humboldt Little River Lagoon Comment
  CHSC9555  Salix hookeriana E. L. Smith 1971-4-6 925 Humboldt Ca. 7 mi s of Eureka at Field's Landing. Comment
  CHSC9558  Salix hookeriana E. L. Smith 1971-4-7 928 Humboldt Clam Beach County Park ca. 6 mi s of Trinidad. Comment
  CHSC9655  Salix hookeriana E. L. Smith 1971-8-18 1025 A Humboldt Clam Beach County Park ca. 6 mi s of Trinidad. Comment
  CHSC9658  Salix hookeriana E. L. Smith 1971-8-17 1028 Humboldt Between highway and beach at Trinidad. Comment
  HSC19956  Salix hookeriana H. E. Parks, S. T. Parks 1932-4-5 1103 Humboldt Little River Lagoon Comment
  HSC40863  Salix hookeriana Linda M. Barker 1976-4-30 1416 Humboldt Lanphere-Christensen Dunes, 3 mi. W of Arcata Comment
  JEPS12928  Salix hookeriana Joseph P. Tracy 1931-4-4 9330 Humboldt near Samoa; Northern Coast Region, Humboldt Bay 6 Comment
  JEPS13090  Salix hookeriana Joseph P. Tracy 1936-10-24 15202 Humboldt Fortuna 15 Comment
  RSA342501  Salix hookeriana Robert F. Thorne, Percy C. Everett 1965-8-7 35230 -c Humboldt Big Lagoon. 3 Comment
  UC275526  Salix hookeriana Joseph P. Tracy 1924-9-21 6884 Humboldt Eureka Northern Coast Ranges, Eureka 0 Comment
  UC470419  Salix hookeriana Joseph P. Tracy 1931-10-18 9739 Humboldt Camp Grant North Coast Ranges, Eel River 60 Comment
  UC481270  Salix hookeriana Harold E. Parks 1931-5-28 1000 Humboldt Little River Lagoon Comment
  UC481348  Salix hookeriana Harold E. Parks 1931-5-12 953 Humboldt Samoa Humboldt Bay Comment
  UC481392  Salix hookeriana Harold E. Parks 1931-3-24 912 Humboldt Fortuna Eel River (banks of river) 10 Comment
  UC492330  Salix hookeriana Harold E. and Susan T. Parks 1932-4-3 1100 Humboldt Little R. Lagoon Trinidad; , Little River Lagoon Comment
  UC512014  Salix hookeriana Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-12 1229 Humboldt 1 1/2 mi e Alton; Van Duzen River 30 Comment
  UC512100  Salix hookeriana Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-11 1210 a Humboldt 4 1/2 mi s Trinidad (Little River Lagoon); Little River Lagoon Comment
  HSC37877  Salix lasiandra Thomas W. Nelson 1976-3-22 2279 Humboldt Cooper's Gulch near Franklin Elementary School Comment
  UC1196579  Salix lasiandra subsp. lasiandra Joseph P. Tracy 1939-5-6 16280 Humboldt opposite mouth of Willow Creek Lack Pond; Trinity R. Valley 152 Comment
  CAS-BOT-BC107577  Salix lasiolepis Joseph P. Tracy 1934-3-25 13167 Humboldt Blue Slide, on Van Duzen River 91 Comment
  CAS-BOT-BC107587  Salix lasiolepis Joseph P. Tracy; Carleton R. Ball; Harold E. Parks 1932-5-17 1321 Humboldt On banks of Redwood Creek, at Berry's, on Trinity Highway 274 Comment
  CAS-BOT-BC107646  Salix lasiolepis Joseph P. Tracy 1933-3-19 10931 Humboldt Blue Slide, on Van Duzen River 91 Comment
  HSC55635  Salix lasiolepis Overton, Butler 1979-7-24 9655 Humboldt Near Titlow Hill, close to the town of Willow Creek 1250 Comment
  HSC70352  Salix lasiolepis M. A. Baker 1980-6-7 1841 Humboldt Near Ammon Creek 732 Comment
  JEPS12923  Salix lasiolepis H. E. Parks and Joseph P. Tracy 1933-3-19 11005 Humboldt near Bridgeville; Northern Coast Ranges 182 Comment
  LA208774  Salix lasiolepis Harold E. Parks; 1931-5-14 963 Humboldt Van Duzen River between Alton and Carlotta 15.0 Comment
  UC1225927  Salix lasiolepis Joseph P. Tracy 1947-6-28 17755 Humboldt Bridgeville Van Duzen River 198 Comment
  UC303034  Salix lasiolepis Joseph P. Tracy 1926-5-1 7451 Humboldt Redwood Creek, at Berry's 274 Comment
  UC469415  Salix lasiolepis Joseph P. Tracy 1927-5-13 7996 Humboldt Redwood Creek, at Berry's 274 Comment
  UC469418  Salix lasiolepis Joseph P. Tracy 1927-8-7 8306 Humboldt at Berry's Redwood Creek; Northern Coast Ranges, Redwood Creek 274 Comment
  UC470407  Salix lasiolepis Joseph P. Tracy 1931-9-26 9697 Humboldt at Berry's Redwood Creek; Northern Coast Ranges, Redwood Creek 274 Comment
  UC490544  Salix lasiolepis Joseph P. Tracy 1932-5-10 9958 Humboldt near Petrolia; North Coast Region, Mattole River 15 Comment
  UC490549  Salix lasiolepis Joseph P. Tracy 1932-4-24 9804 Humboldt between Miranda and Redway (S. Fork Eel R.); North Coast Ranges, S. Fork Eel R. 91 Comment
  UC490553  Salix lasiolepis Joseph P. Tracy 1932-3-6 9774 Humboldt at mouth of Willow Creek; Northern Coast Ranges, Trinity R. Valley 152 Comment
  UC506381  Salix lasiolepis Joseph P. Tracy 1933-2-26 10913 Humboldt Miranda Northern Coast Ranges, South Fork of Eel River 121 Comment
  UC506509  Salix lasiolepis Joseph P. Tracy 1932-6-4 10130 Humboldt Bridgeville Northern Coast Ranges, Bridgeville 228 Comment
  UC512113  Salix lasiolepis Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-11 1203 Humboldt 4 1/2 mi. s. Trinidad (Little R. Lagoon); Little R. Lagoon Comment
  UCD111583  Salix lasiolepis Carleton R. Ball; Harold E. Parks, Joseph P. Tracy 1932-5-13 01254 Humboldt Mad River at Engelhart gravel pit, 2 miles east of Redwood Highway and above Blue Lake Road. Comment
  UCD111588  Salix lasiolepis Carleton R. Ball; Harold E. Parks, Joseph P. Tracy 1932-5-17 01323 Humboldt West slope of Berry's Mountain, east of Redwood Creek, on Trinity Highway. 762 Comment
  CAS-BOT-BC107297  Salix lasiolepis var. bigelovii Harold E. Parks 1931-5-14 0963 Humboldt Van Duzen River between Alton and Carlotta 15 Comment
  POM220140  Salix lasiolepis var. bigelovii H. E. Parks, Joseph P. Tracy 1931-5-17 976 Humboldt Mouth of Willow Creek at Trinity River. 150 Comment
  CAS-BOT-BC107410  Salix lasiolepis var. lasiolepis Doris K. Kildale 1927-5-13 3148 Humboldt Redwood Creek at Berry's 289 Comment
  POM219560  Salix lucida subsp. lasiandra H. E. Parks 1931-3-24 911 Humboldt Fortuna. Eel River. 10 Comment
  RSA34304  Salix lucida subsp. lasiandra Doris K. Kildale 1927-3-20 2926 Humboldt Stevens Grove. Comment
  CAS-BOT-BC125611  Salix melanopsis Harold E. Parks 1931-5-14 0956 a Humboldt Van Duzen River above Bridgeville 300 Comment
  CAS-BOT-BC125630  Salix melanopsis Harold E. Parks 1931-5-14 0965 Humboldt Van Duzen River between Alton and Carlotta 15 Comment
  HSC20027  Salix melanopsis H. E. Parks 1931-10-15 1077 Humboldt Bishop Pine Lodge, Trinidad 75 Comment
  JEPS12941  Salix melanopsis Joseph P. Tracy 1931-6-14 9580 Humboldt Van Duzen River Alton; Northern Coast Ranges 30 Comment
  LA208879  Salix melanopsis Mrs. H. P. Bracelin; 1931-5-2 283 Humboldt E of Redwood Hwy.; 6 km. S of Alton 20.0 Comment
  LA208880  Salix melanopsis Harold E. Parks; 1931-5-14 956 a Humboldt Van Duzen River above Bridgeville 300.0 Comment
  POM219691  Salix melanopsis H. E. Parks 1931-5-14 960 Humboldt Van Duzen River between Alton and Carlotta. 15 Comment
  POM220143  Salix melanopsis H. E. Parks, Joseph P. Tracy 1931-5-17 972 Humboldt Mouth of Willow Creek at Trinity River. 150 Comment
  SD914  Salix melanopsis Harold E. Parks, Joseph P. Tracy 1931-5-17 972 Humboldt Mouth of Willow Creek at Trinity River 149 Comment
  UC490561  Salix melanopsis Joseph P. Tracy 1932-5-1 9876 Humboldt vicinity of R. Garberville Garberville; Northern Coast Ranges, Garberville 121 Comment
  UC512019  Salix melanopsis C. R. Ball, H. E. Parks, and J. P. Tracy 1932-5-17 1339 Humboldt pond at Willow Creek (Graham Ranch) near junction with Trinity R.; Willow Creek 152 Comment
  UC519360  Salix melanopsis Joseph P. Tracy 1933-6-7 12512 Humboldt on Van Duzen R. Blue Slide; Northern Coast Ranges, Van Duzen R. 91 Comment
  RSA0005850  Salix parksiana H. E. Parks 1931-5-14 962 Humboldt Van Duzen River between Alton and Carlotta. 15 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-BC129152  Salix scouleriana Doris K. Kildale 1929-2-28 6947 Humboldt Arcata - hill back of State Teacher's College Comment
  CAS-BOT-BC129156  Salix scouleriana Doris K. Kildale 1926-11-26 2836 Humboldt Pine's Pasture - Eureka 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
  LA208918  Salix scouleriana Harold E. Parks; 1931-5-12 955 a Humboldt Samoa; Humboldt Bay 0 Comment
  SBBG57977  Salix scouleriana H. E. Parks 1931-5-12 955 a Humboldt Samoa, Humboldt Bay Comment
  UC1193085  Salix scouleriana G. W. Tourtillott 1950-8-30 29 Humboldt 1/4 mi. e. Belae Ranch; Quad. 29C4 457 Comment
  UC1196702  Salix scouleriana Joseph P. Tracy 1926-10-12 7812 Humboldt near mouth of S. Fork Trinity R. MirandaFour Mile creek; Northern Coast Ranges, Four Mile Creek 609 Comment
  UC481260  Salix scouleriana Harold E. Parks 1931-5-20 994 Humboldt Blue Lake Mad R., Blue Lake 15 Comment
  UC55955  Salix scouleriana J. P. Tracy 1900-8-5 922 Humboldt immediate vicinity Eureka 0 Comment
  CAS-BOT-BC128999  Salix sitchensis Harold E. Parks 1931-3-26 906 Humboldt Alton, on Van Duzen River 15 Comment
  HSC96575  Salix sitchensis Gordon Leppig 2003-2-20 1805 Humboldt Eureka Slough, Cooper Gulch 5 Comment
  UC146202  Salix sitchensis J. P. Tracy 1905-11-5 2397 Humboldt immediate vicinity Eureka 0 Comment
  UC490535  Salix sitchensis Joseph P. Tracy 1932-7-13 10512 Humboldt at Corral Prairie Corral Prairie; Klamath Mts., Trinity Summit, Corral Prairie 1524 Comment
  SEINET4855902  Salix tracyi Unknown 1931-5-17 0976 Humboldt Mouth of Willow Creek at Trinity River. 150 Comment
  UC481217  Salix tracyi Harold E. Parks 1931-5-20 997 Humboldt Blue Lake Mad R., Blue Lake 15 Comment
  CAS-BOT-BC238660  Sambucus nigra subsp. caerulea Henry M. Pollard 1947-9-1 s.n. Humboldt Somes Peak, nera Orleans 1371 Comment
  HSC57090  Sambucus nigra subsp. caerulea Overton, Butler 1979-7-24 9804 Humboldt Near Black Rock, close to the town of Willow Creek 1463 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
  HSC76248  Sambucus nigra subsp. caerulea Denis Kearns 1981-7-23 400 Humboldt Near Whiteys Peak. 1524 Comment
  HSC3966  Sambucus racemosa var. racemosa Harvey Doerksen 1962-5-4 7 Humboldt 0.25 mi. W of Korbel, S side of Mad River. Comment
  HSC89426  Sambucus racemosa var. racemosa P. A. Daly 1984-5-8 5 Humboldt Trinidad Head. 61 Comment
  RSA245004  Sanguisorba minor B. D. Rogers, W. J. Ferlatte 1966-8-15 3122 Humboldt 1/2 mile E of Azalea State Park. Arcata. Comment
  HSC104438  Sanguisorba officinalis J. Martin, Bianca Hayashi, Cheri Sanville 2012-8-28 Humboldt Northern end of Christmas Prairie Lake Comment
  HSC62749  Sanicula arctopoides J. M. DiTomaso 1979-4-21 897 Humboldt Cliffs above College Cove, Elks Head, Trinidad Comment
  UCD127965  Sanicula crassicaulis Linda M. Barker 1976-5-13 1485 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  HSC56221  Sanicula graveolens G. L. Clifton, Terry Griswold 1979-8-2 12249 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  UC32523  Sanicula tuberosa Chesnut and Drew 1888-7-21 Humboldt South Fork Mountain Comment
  RSA54147  Saponaria officinalis H. M. Pollard 1945-9-4 s.n. Humboldt Near Camp Creek, Orleans district 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
  JEPS42981  Saxifraga ferruginea Jos. P. Tracy 1932-7-18 10710 Humboldt head of Brett Hole (Trinity Summit); , Brett Hole Comment
  BLMAR287  Saxifraga mertensiana Jennifer Anthony-Wheeler 2000-4-18 287 Humboldt King range, growing on rocky ridgeline, outcrop/vista in millcrk forest 402 Comment
  UC673256  Saxifraga mertensiana Lincoln Constance, Reed C. Rollins 1942-5-11 2869 Humboldt 3 mi w of East Fork of Willow Creek; North Coast Ranges Comment
  CAS-BOT-BC441187  Saxifraga mertensiana Alice Eastwood; John Thomas Howell 1937-6-24 4867 Humboldt 5 miles east of Berry Summit Comment
  CDA43206  Scandix pecten-veneris Richard R. Halse 2015-3-26 9381 Humboldt Along U.S. Hwy. 101 ca 2.4 miles southwest of Weott. Comment
  RSA246910  Schoenoplectus maritimus Robert F. Thorne, Percy C. Everett 1965-8-7 35213 Humboldt Samoa Peninsula: near sea level Comment
  RSA366412  Schoenoplectus pungens Joseph P. Tracy 1914-5-30 s.n. Humboldt North Coast, near Hydesville Comment
  HSC44826  Schoenoplectus subterminalis Bruce G. Marcot 1978-7-3 Humboldt Red Mtn. Lake, submerged Comment
  HSC58384  Scirpus congdonii Terry Griswold 1979-7-25 10920 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon 1784 Comment
  UC183949  Scirpus maritimus Joseph P. Tracy 1909-9-19 3099 Humboldt Samoa Northern Coast Region, region about Humboldt Bay, Samoa 0 Comment
  HSC59434  Scirpus microcarpus Kenneth Clark 1979-4-21 141 Humboldt Clam Beach, 3.5 mi. N of McKinleyville on Hwy. 101 Comment
  SEINET11754828  Scirpus microcarpus J. P. Tracy 1949-1 18533 Humboldt Dusky's Spring, Trinity River Valley, Willow Creek 152 Comment
  CAS-BOT-BC517414  Scoliopus bigelovii Mrytle Paulson 1918-4-28 s.n. Humboldt Eureka Comment
  UC582592  Scrophularia californica Joseph P. Tracy 1933-8-22 12980 Humboldt Eureka 6 Comment
  CDA41981  Scrophularia californica T. C. Fuller 1961-9-28 7058 Humboldt 1.5 miles south of Samoa. 0 Comment
  HSC97449  Scutellaria antirrhinoides Cara Witte 2007-6-7 218 Humboldt Along National Forest 1 on Kinsey Ridge. Approximately 2 miles southeast of intersection with 5N04. Near cattleguard. 1371 Comment
  UC249516  Scutellaria tuberosa Joseph P. Tracy 1922-4-30 6005 Humboldt near Willow Creek (Trinity River Valley); Northern Coast Ranges, Trinity River Valley 152 Comment
  UC1239711  Scutellaria tuberosa Joseph P. Tracy 1939-5-14 16296 Humboldt along Van Duzen River (Dinsmore's); , Dinsmore's 746 Comment
  CAS-BOT-BC63880  Sedum laxum subsp. heckneri Doris K. Kildale 1926-6-9 2176 Humboldt Horse Mountain. 1399 Comment
  HSC59107  Sedum laxum subsp. heckneri M. A. Baker 1978-7-17 594 Humboldt On the N bank of the Salmon River, 5 km E of its confluence with the Klamth River Comment
  HSC74192  Sedum laxum subsp. heckneri M. A. Baker 1980-7-23 3134 Humboldt Near Orleans Mtn. 1859 Comment
  HSC82131  Sedum laxum subsp. heckneri D. K. Imper 1985-6-18 Humboldt N and S of Whiteys Peak 1707 Comment
  HSC32276  Sedum obtusatum subsp. retusum D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5627 Humboldt Mt. Lassic and two smaller peaks to immediate E 1768 Comment
  UC169907  Sedum radiatum Harley P. Chandler June, 1901 1379 Humboldt Hupa Valley North Coast Ranges, Hupa Indian Reservation, Hupa Valley (Hupa Indian Reservation, North Coast Ranges) 152 Comment
  CAS-BOT-BC59127  Sedum spathulifolium Henry M. Pollard 1948-7-28 s.n. Humboldt River road near Orleans Comment
  CAS-BOT-BC63828  Sedum spathulifolium W. R. Dudley 1899-6-1 s.n. Humboldt Vicinity of Scotia Comment
  CDA34903  Selaginella kraussiana Dana York, Adrian York & Noah York 2011-4-2 3019 Humboldt Arcata; eastern edge of Humboldt State University Campus in the community forest, along inlet creek to Fern Lake. Comment
  LA209677  Selaginella oregana Lawrence L. Kiefer; 1963-8-6 769 Humboldt Patrick's Point State Park, Lookout Rock 45 Comment
  UC519317  Selaginella oregana Joseph P. Tracy 1933-2-19 10903 Humboldt above Korbel (N. Fork Mad River); North Coast Ranges 60 Comment
  CHSC79937  Selaginella wallacei L. P. Janeway 1996-8-4 5061 Humboldt High North Coast Ranges. Along Titlow Hill Road (Road #1) about 0.3 mi west of the spur road to top of Horse Mountain. 1341 Comment
  POM182453  Selaginella wallacei Joseph P. Tracy 1912-7-26 3850 Humboldt Kneeland Prairie. 762 Comment
  UC34194  Senecio integerrimus var. major Harley P. Chandler June 1901 1274 Humboldt Hupa Indian Reservation North Coast Ranges 1036 Comment
  UC545823  Senecio minimus H. E. Parks 1931-9-1 1058 Humboldt Trinidad 76 Comment
  SBBG8070  Senecio minimus H. and M. Dearing 1939-6-23 3697 Humboldt 12 mi E of Arcata Comment
  SJSU8451  Senecio minimus H. T. Harvey 1977-8-8 620 Humboldt delta lands of Eel R c. 4 mi NW of Ferndale Comment
  JEPS37087  Senecio sylvaticus Lincoln Constance 1934-6-2 790 Humboldt Bull Cr. road to mouth of Bull Creek (and up the creek); South Fork Eel River, Bull Creek Region Comment
  UC1223153  Senecio sylvaticus Joseph P. Tracy 1941-8-17 16992 Humboldt near High Prairie (Bald Mountain); Bald Mountain Comment
  HSC57636  Senecio triangularis G. L. Clifton, Griswold 10794 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon 1814 Comment
  HSC82388  Senecio triangularis Thomas W. Nelson 1979-7-11 5030 Humboldt Along trail from Grogan's Hole to summit of N Trinity Mtn. Comment
  HSC85756  Sequoia sempervirens R. W. Becking 1985-1-17 Humboldt HSU Campus, NRS Building SW corner Comment
  POM181978  Sequoia sempervirens J. G. Lemmon 1901-09 s.n. Humboldt Eureka Comment
  RSA175208  Sequoia sempervirens Robert F. Thorne 1957-9-2 18996 Humboldt Burlington State Park, just S of Weott. Comment
  UC672888  Sequoia sempervirens Joseph P. Tracy 1940-10-17 16770 Humboldt Dyerville 48 Comment
  SEINET10612372  Sequoia sempervirens Joseph P. Tracy 1940-10-17 Tracy 16770 Humboldt Dyerville 49 Comment
  SEINET13289881 Image available Sequoia sempervirens Unknown 1950-1 Humboldt Trinidad, Park's place Comment
  UC212874  Setaria pumila Joseph P. Tracy 1919-9-13 5193 Humboldt Trinity R. Valley near Willow Creek; Northern Coast Ranges, Trinity R. Valley 152 Comment
  HSC19857  Sherardia arvensis E. W. Styskel 1963-5-19 44 Humboldt 3 mi. SE of Korbel, on Snow Camp Rd. 290 Comment
  HSC79421  Sherardia arvensis Kenneth Clark 1980-4-18 598 Humboldt Above Dead Man's Gulch 183 Comment
  UC1222508  Sidalcea diploscypha Joseph P. Tracy 1950-6-23 18871 Humboldt 3 mi ne Alderpoint (Dobbyn Creek); , ne of Alderpoint 213 Comment
  HSC100571  Sidalcea diploscypha Carl C. Marshall Jun 1887 467 Humboldt S Humboldt. Comment
  JEPS50089  Sidalcea diploscypha Lincoln Constance 1934-5-23 613 Humboldt sw slope Upper end Look Prairie Bull Creek Region, South Fork Eel River, Look Prairie (South Fork Eel River, Bull Creek Region) 365 Comment
  CAS-BOT-BC205568  Sidalcea malachroides Doris K. Kildale 1927-7-2 3628 Humboldt Lord-Ellis road Comment
  JEPS67223  Sidalcea malachroides W. L. Jepson 1902-6-24 1929 Humboldt above Korbel; above Korbel, Korbel to Angel's Ranch Comment
  RSA33405  Sidalcea malachroides Doris K. Kildale 1927-7-2 s.n. Humboldt Lord (?) Ellis Road, near Korbel Comment
  UC144092  Sidalcea malachroides J. P. Tracy 1909-7-4 3010 Humboldt immediate vicinity Eureka; immediate vicinity of Eureka 0 Comment
  UC146187  Sidalcea malviflora subsp. patula J. P. Tracy 1905-6-11 2193 Humboldt immediate vicinity Eureka (at Buckport); immediate vicinity of Eureka, at Buckport 0 Comment
  CAS-BOT-BC205761  Sidalcea oregana David Imper 1985-8-1 s.n. Humboldt Six Rivers National Forest. Approximately 1/2 mile west of Ladder Rock alongside trail 1371 Comment
  CAS-BOT-BC213157  Sidalcea oregana subsp. eximia Joseph P. Tracy 1937-7-16 15432 Humboldt Dow's Prairie 60 Comment
  HSC102530  Sidalcea oregana subsp. oregana M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-28 1517 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1106 Comment
  HSC101060  Sidalcea oregana subsp. spicata Sydney Carothers, Thomas W. Nelson 1996-8-18 191 Humboldt Six Rivers National Forest; Groves Prairie 451 Comment
  SEINET10537655  Silene californica Mary Merello 1993-6-19 Merello 659 Humboldt Along the Weott-Honeydew Road just outside of the Rockerfeller Forest boundary. Redwood Forest. 90 Comment
  JEPS50973  Silene californica Lincoln Constance 1934-6-1 770 Humboldt Bull Cr Road between Dyerville Bridge and Bull Creek (flat grove (mouth of Bull Cr)); Bull Creek Region, South Fork Eel River 45 Comment
  UC906706  Silene californica Harold E. Parks and Joseph P. Tracy 1942-7-1 11575 Humboldt Dinsmore's 762 Comment
  CAS-BOT-BC387076  Silene gallica Doris K. Kildale; L. B. Kildale 1930-5-27 9527 Humboldt Gunther's Island in Humboldt Bay Comment
  UC1198359  Silene hookeri Joseph P. Tracy 1911-7-7 3414 Humboldt between Willow and Campbell Creeks (near the summit Brannan Mountain, viz. ridge n of Willow Creek); Northern Coast Ranges, Brannan Mountain, n of Willow Creek 1219 Comment
  JEPS23254  Silene lemmonii Joseph P. Tracy 1933-7-25 12870 Humboldt Grouse Mountain 1524 Comment
  UC1198792  Sisymbrium altissimum Joseph P. Tracy 1937-5-31 15319 Humboldt Trinity River Valley at Willow Creek Willow Creek; Trinity River Valley, Willow Creek 152 Comment
  HSC48534  Sisyrinchium californicum Mark Flippo 1978-4-18 25 Humboldt McKinleyville, Bella Vista Hill Comment
  UC1134655  Smilacina racemosa R. Stahelin 1933-5-15 L.H. 23 Humboldt Freshwater Eureka Quadrangle (T.P.L. Co.) Comment
  UC275554  Smilacina stellata Joseph P. Tracy 1924-9-7 Humboldt Table Bluff Northern Coast Ranges 182 Comment
  HSC59399  Solanum nigrum Rick Lundquist 1979-5-18 97 Humboldt Clam Beach Ponds 0 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-BC365432  Solidago elongata Marcus E. Jones 1931-7-12 29135 Humboldt Alton Comment
  CAS-BOT-BC365436  Solidago elongata Doris K. Kildale 1926-7-11 2369 Humboldt Capetown - Ferndale road near Mountain Glen Comment
  HSC57982  Solidago elongata G. L. Clifton, Griswold 1979-7-31 11716 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1805 Comment
  UC1070251  Solidago elongata H. L. Person 1932-7-19 Humboldt Lindsay Creek Eureka Quad, Lindsay Creek Comment
  SBBG62991  Solidago velutina var. californica R. Hartwell 1938-8-4 Humboldt near Eureka Comment
  UC1199288  Soliva sessilis Joseph P. Tracy 1939-4-18 16217 Humboldt Garberville 152 Comment
  HSC47627  Soliva sessilis J. P. Smith 1977-4-23 9019 Humboldt 2.5 mi. S of Shelter Cove Rd., S Fork of Bear Creek at Wailaki Campground. 561 Comment
  HSC26465  Sonchus asper T. O. Osborne 1970-7-18 24 Humboldt Sugarloaf Rock, Cape Mendocino 76 Comment
  SEINET200989  Sonchus asper J. P. Tracy 1903-8-2 1925 Humboldt Immediate vicinity of Eureka. 0 Comment
  HSC6217  Sonchus asper J. W. Johnson 1962-6-12 1410 Humboldt Arcata; between the foredunes, at foredune 39, Samoa Comment
  UC164789  Sonchus oleraceus J. P. Tracy 1903-8-2 1926 Humboldt immediate vicinity Eureka 0 Comment
  HSC6223  Sonchus oleraceus J. W. Johnson 1962-4-8 1216 Humboldt Arcata, Mad River Co. Park Comment
  UC1099915  Sparganium emersum var. emersum Malcolm A. Nobs and S. Galen Smith 1949-8-9 1228 Humboldt 1 mi n Arcata (at junction of Highway 101 and Highway 299); Mad River Valley Comment
  UC672885  Sparganium emersum var. emersum Joseph P. Tracy 1928-9-2 8499 Humboldt near Fruitland 609 Comment
  HSC89261  Spartina alterniflora Anni Eicher 1989-4-20 366 Humboldt .5 mi. N of Samoa-Eureka bridge, E of State Hwy. 255, Humboldt Bay Comment
  LA39194  Spartina foliosa W. A. Silveus; 1938-7-10 2966 Humboldt Eureka Comment
  HSC43208  Spergularia rubra R. Sutherland 1976-8-18 8 .18876 Humboldt 183 Comment
  UC1199029  Spiraea douglasii Joseph P. Tracy 1924-7-13 6734 Humboldt Big Lagoon; Northern Coast Region 6 Comment
  UC492192  Spiraea douglasii Joseph P. Tracy 1932-8-28 10760 Humboldt Bald Mountain Northern Coast Ranges (at Lake Prairie) 1066 Comment
  UC666852  Spiraea douglasii Joseph P. Tracy 1937-7-17 15435 Humboldt Eureka 30 Comment
  UC666994  Spiranthes porrifolia Joseph P. Tracy 1937-6-26 15376 Humboldt Willow Creek Trinity River Valley 152 Comment
  RSA245280  Spiranthes romanzoffiana J. D. Ackerman 1973-8-29 119 Humboldt Big Lagoon Beach Co. Park; 8 miles N of Trinidad. Comment
  UC1196398  Spiranthes romanzoffiana Mrs. Alma Bonstell 1912-8-5 Humboldt Christmas Prairie Northern Coast Ranges 914 Comment
  UCLA71584  Stachys ajugoides var. ajugoides Joseph P. Tracy 1939-6-23 16312 Humboldt Park's garden Trinidad 3 Comment
  CHSC32901  Stachys ajugoides var. rigida James P. Smith 1973-5-26 6863 Humboldt Scotia Bluffs along the Eel River near Rio Dell. Railroad right-of-way. Comment
  JEPS63062  Stachys ajugoides var. rigida W. L. Jepson 1936-8-15 17901 Humboldt 2 mi e Carlotta Comment
  UC1222861  Stachys ajugoides var. rigida Joseph P. Tracy 1950-6-8 18741 Humboldt near Petrolia (hills between town and Ocean); Bear River 30 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
  HSC79495  Stachys rigida var. quercetorum Kenneth Clark 1979-7-1 451 Humboldt Dead Man's Gulch, lower terrace 6 Comment
  HSC38476  Stachys rigida var. rigida Lon Hall 1975-6-20 392 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
  UC668078  Stellaria borealis subsp. sitchana Joseph P. Tracy 1935-5-24 13817 Humboldt Eureka 91 Comment
  HSC4272  Stellaria media S. J. Hawks 1965-4-3 13 Humboldt W of Eureka City Airport Comment
  JEPS51121  Stellaria media Lincoln Constance 1934-5-31 754 Humboldt Bull Creek Flat South Fork Eel River, Bull Creek Region (along Bull Creek, from w boundary of park to Grasshopper Pk (Squaw Cr) rd, n side of creek) Comment
  HSC76433  Stenanthium occidentale Denis Kearns 1981-7-23 434 Humboldt Near Whiteys Peak. 1524 Comment
  HSC32338  Stipa lemmonii D. E. Anderson, S. Dowty, Thomas W. Nelson 1972-6-14 5643 Humboldt Senteney Rock, a large barren Franciscan Rock along Swayback Ridge Comment
  UC673194  Streptanthus tortuosus Lincoln Constance and Reed C. Rollins 1942-5-12 2880 Humboldt bluffs at mouth of creek 6 mi ne Weitchpec; Klamath-Siskiyou Region, Bluff Creek 152 Comment
  HSC104430  Streptanthus tortuosus Greg O'Connell 2013-6-27 Humboldt Summit of Mt. Andy 1159 Comment
  UC1198802  Streptanthus tortuosus var. orbiculatus Joseph P. Tracy 1933-6-13 12562 Humboldt on road w from Hoopa to Bair's near summit; Northern Coast Ranges, Hoopa Mountain 1066 Comment
  UC552237  Streptanthus tortuosus var. orbiculatus Joseph P. Tracy 1933-7-16 12790 Humboldt along summit near Blake Lookout; Northern Coast Ranges, South Fork Mountain 1706 Comment
  CDA25184  Streptanthus tortuosus var. tortuosus Kaylea Eickhoff, Cara M. Witte 2005-6-8 4 Humboldt Northwestern California; 1.7 miles south of Highway 299 on Titlow Hill Road. Comment
  CHSC97958  Streptanthus tortuosus var. tortuosus Laurel Goldsmith; Wanda Naylor 2005-6-8 5 Humboldt 1.7 miles south of Hwy 299 on Titlow Hill Rd. UTM 0436141, 4525408. 980 Comment
  UC1103496  Streptopus amplexifolius var. americanus Joseph P. Tracy 1949-6-25 18346 Humboldt near Box Camp; Trinity Summit 1524 Comment
  UC666977  Streptopus amplexifolius var. americanus Joseph P. Tracy 1937-7-2 15411 Humboldt head of Little Hors-Linto Creek; Trinity Summit 1371 Comment
  JEPS46345  Swertia radiata Joseph P. Tracy 1917-9-2 4851 Humboldt Grouse Mt. Northern Coast Ranges 1524 Comment
  UC198632  Swertia radiata Joseph P. Tracy 1917-9-2 4851 Humboldt Grouse Mt. Northern Coast Ranges 1524 Comment
  JEPS13645  Symphoricarpos mollis Joseph P. Tracy 1932-7-11 10415 Humboldt Corral Prairie; Trinity Summit 1584 Comment
  CAS-BOT-BC99158  Symphyotrichum chilense Mary O'Conor 1927-9-26 s.n. Humboldt Eureka Comment
  JEPS40779  Symphyotrichum subspicatum W. L. Jepson 1936-8-17 17913 Humboldt 2 mi s, near Still's Ranch Field's Landing Comment
  UC672289  Symphyotrichum subspicatum Frank W. Peirson 1923-7-11 3882 Humboldt 7 mi n Arcata Comment
  JEPS26388  Synthyris reniformis Joseph P. Tracy 1941-4-8 16810 Humboldt Willow Creek Canyon, along Trinity Highway Willow Creek Canyon 609 Comment
  UC582545  Synthyris reniformis Joseph P. Tracy 1926-2-28 7380 Humboldt East Fork of Willow Creek Canyon]; Northern Coast Ranges 457 Comment
  CAS-BOT-BC221913  Taeniatherum caput-medusae F. A. Weatherbee 1960-6-22 s.n. Humboldt Ft. Baker Ranch, Eureka Comment
  CAS-BOT-BC376734  Tanacetum bipinnatum David D. Keck; J. Clausen 1935-6-16 3388 Humboldt Mouth of Little River Comment
  HSC95076  Tanacetum bipinnatum Andrea Pickart 2002-7-2 144 Humboldt King Salmon Sand Spit 0 Comment
  RSA21034  Tanacetum camphoratum C. B. Wolf 1937-6-18 8903 Humboldt Centerville Beach 3 Comment
  RSA246918  Tanacetum douglasii R. F. Thorne, Percy C. Everett 1965-8-5 35167 Humboldt Samoa Dunes. 3 Comment
  CAS-BOT-BC376777  Tanacetum parthenium Henry M. Pollard 1947-8-21 s.n. Humboldt Near Camp Creek, Orleans region Comment
  HSC79416  Taraxacum officinale Kenneth Clark 1980-3-1 507 Humboldt On access trail to Dead Man's Gulch 30 Comment
  UC314623  Taraxia ovata Joseph P. Tracy 1924-3-16 6627 Humboldt Garberville Northern Coast Ranges 121 Comment
  CHSC35576  Tauschia kelloggii Jacqueline Greenleaf 1980-5-23 90 Humboldt Near Dinsmores. 430 Comment
  HSC73247  Tauschia kelloggii M. A. Baker 1980-5-18 1311 Humboldt Near Black Mtn. 1006 Comment
  HSC67525  Tauschia kelloggii J. M. DiTomaso 1981-4-12 1999 Humboldt Chezem Rd., 23 mi. E of Hwy. 101off Hwy. 299 Comment
  HSC55212  Taxus brevifolia Walter Overton 1979-8-1 12351 Humboldt Near Mill Creek, Middle Fork, close to the town of Hoopa. 1341 Comment
  RSA160832  Taxus brevifolia Joseph P. Tracy 1924-9-7 6862 Humboldt Grizzly Creek on Van Duzen River 91 Comment
  HSC56216  Tellima grandiflora G. L. Clifton, Griswold 1979-8-2 12229 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  HSC20422  Tellima grandiflora D. A. Shally 1965-5-15 47 Humboldt Arcata, 1/4 mi. NE of HSC campus on Jolly Giant Creek Comment
  HSC45015  Tellima grandiflora R. Sutherland 1978-4-25 5 .25478 Humboldt Mouth of Buck Creek near ocean 18 Comment
  HSC18237  Thalictrum polycarpum S. S. Stutz 1963-5-18 61 Humboldt 7 mi. SE of Arcata on Fickle Hill Rd. Comment
  CHSC10101  Thermopsis macrophylla D. E. Anderson 1965-5-15 36926 Humboldt About 7 miles north of Hoops on Bloody Camp Prairie road. Comment
  UC1778592  Thermopsis robusta G. F. Hrusa 1998-7-5 14700 Humboldt Siskiyou Mountains; Cedar Camp Rd. +/- 5 mi. E of Weitchpec on Hwy 96. N side of Hwy. Mile 8.8 Comment
  UC1222644  Thlaspi montanum var. montanum Joseph P. Tracy 1950-6-6 18999 Humboldt on the Albee Road 2 mi s Burr Valley; s of Burr Valley 1158 Comment
  NY17197  Thuja plicata H. E. Parks 1932-7-25 1139 Humboldt This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  UC1190156  Thuja plicata Ira L. Wiggins 1955-7-31 13594 Humboldt 9 mi e of Arcata (hillside, along Highway 299); Highway 299 316 Comment
  RSA134612  Thuja plicata 1959-10-25 23970 Humboldt 6.9 mi SW from Ferndale on old coast road to Capetown. 564 Comment
  HSC97624  Thysanocarpus curvipes Cara Witte 2007-6-4 194 Humboldt Cold Spring. 0.5 mile S of Titlow Hill. 1386 Comment
  UC673199  Thysanocarpus curvipes Lincoln Constance and Reed C. Rollins 1942-5-12 2884 Humboldt 6 mi ne Weitchpec (mouth of Bluff Creek); Klamath-Siskiyou Region, mouth of Bluff Creek 152 Comment
  UC11023  Thysanocarpus curvipes C. C. Marshall 1888-1 Humboldt Comment
  CAS-BOT-BC436907  Tiarella trifoliata var. unifoliata Doris Kildale 1931-5-10 10676 Humboldt Snow Camp Comment
  JEPS49704  Tiarella trifoliata var. unifoliata W. L. Jepson 1932-7-29 16441 Humboldt Weott Comment
  OBI33243  Tiarella trifoliata var. unifoliata David J. Keil 1983-7-1 17257 Humboldt Along Bull Crk Flats Rd 1.4 mi W of US 101. Humboldt Redwoods State Park Comment
  UC858903  Tiarella trifoliata var. unifoliata Elizabeth Parsons Hawver Jun 1905-June 1915 Humboldt Carlotta Comment
  HSC98858  Tiarella trifoliata var. unifoliata Cara Witte 2008-7-30 976 Humboldt Forest Service Road 5N04. 1/4 mile east of intersection with Forest Service Road 4N70. 1583 Comment
  SD51331  Tiarella trifoliata var. unifoliata Darley F. Howe 1961-7-31 3097 Humboldt 12 miles north of Garberville on #101 29 Comment
  UC154147  Tiarella trifoliata var. unifoliata Mrs. M. H. Manning 1901-7-31 322 Humboldt near Hupa (Eureka Trail); near Hupa, Eureka Trail Comment
  SEINET12217530  Tiarella unifoliata F. H. Utech, Sato, T.; Ohara, M. 1990-1 90 -291 Humboldt Humboldt Redwoods State Park, Jensen Grove 50 Comment
  JEPS49717  Tolmiea diplomenziesii Milo S. Baker 1923-7-31 154 Humboldt Booth's Run Yager Creek Region (tributary of Lawrence Creek) Comment
  SEINET7295170 Image available Torreyochloa pallida var. pauciflora Richard Spellenberg 1965-1 1135 Humboldt In partly shaded area, in redwood forest; about 1 1/2 mi. e. of Bayside (which is 2 mi. s. of Arcata) on road leading up Jacoby Creek Comment
  BLMAR155  Toxicodendron diversilobum Donald Hazlett 1994-6-7 155 Humboldt King range, near horse Mt. Ridge rd 670 Comment
  SEINET12238543  Toxicodendron diversilobum F. H. Utech, Sato, T.; Ohara, M. 1990-1 90 -276 Humboldt Humboldt Redwoods State Park, Jensen Grove 50 Comment
  OBI15363  Tracyina rostrata Joseph P. Tracy 1950-6-23 18859 Humboldt Dobbyn Creek; 3 mi NE of Alderpoint Comment
  HSC62982  Tragopogon porrifolius M. Dean Griswold Jr. 1979-5-29 80 Humboldt NW of Plant Operations, Humboldt State University campus Comment
  HSC58100  Triantha occidentalis subsp. occidentalis G. L. Clifton, Griswold 1979-8-1 12030 Humboldt Near N Trinity Mtn., close to the town of Hoopa 1799 Comment
  RSA440753  Trichostema laxum E. S. Spalding 1924-7-13 s.n. Humboldt Lanis Flats, bank of Eel River. Comment
  UC162685  Trichostema laxum Joseph P. Tracy 1911-7-10 3492 Humboldt Valley of Trinity River at mouth of Willow Creek Northern Coast Ranges 152 Comment
  UC1198627  Trientalis latifolia Joseph P. Tracy 1935-5-24 13816 Humboldt Eureka; Northern Coast Ranges, Eureka 0 Comment
  UC1561370  Trientalis latifolia Barbara Ertter with Thomas J. Delendick 1987-5-16 6942 Humboldt 3 mi e of Berry Summit (on Hwy 299, 20 air mi e of Arcata, on s side of road above Willow Creek); Hwy 299 243 Comment
  UC1197230  Trifolium albopurpureum var. dichotomum Joseph P. Tracy 1906-6-10 2488 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  UC1197247  Trifolium albopurpureum var. dichotomum H. E. Parks and Joseph P. Tracy 1932-5-12 9987 Humboldt near Alton (Van Dugen river bar); Northern Coast Ranges Comment
  UC1223472  Trifolium albopurpureum var. dichotomum Joseph P. Tracy 1943-5-23 17426 Humboldt e Redwood Creek (on Trinity Highway); Berry's Mountain Comment
  UC169055  Trifolium barbigerum Joseph P. Tracy 1912-6-9 3679 Humboldt Alton Northern Coast Ranges Comment
  UC302113  Trifolium bifidum var. bifidum Joseph P. Tracy 1926-5-2 7419 Humboldt near South Fork; Northern Coast Ranges, Trinity River Valley 182 Comment
  UC16434  Trifolium bifidum var. decipiens J. Burtt Davy 1899-6-15 5526 Humboldt Scotia Comment
  UC1223502  Trifolium bifidum var. decipiens Joseph P. Tracy 1939-4-29 16256 Humboldt 2 mi below Orleans (nw side); Klamath River 121 Comment
  UC33569  Trifolium cyathiferum Chesnut and Drew 1888-7-10 Humboldt Jarnigan's Comment
  SD87601  Trifolium dubium F. W. Peirson 1923-7-11 3622 Humboldt Coast, 20 miles north of Eureka Comment
  UC1542872  Trifolium dubium Harold E. Parks May 1934 4324 Humboldt Spruce Cove Trinidad Comment
  CDA4294  Trifolium dubium G. D. Barbe, T. C. Fuller 1974-6-17 1837 Humboldt Sail Court, Shelter Cove. 0 Comment
  HSC45106  Trifolium dubium R. Sutherland 1978-5-16 6 .16578 Humboldt 157 Comment
  NY33709  Trifolium elmeri V. K. Chesnut 1888-7-25 s.n. Humboldt Comment
  UC33571  Trifolium eriocephalum var. eriocephalum Chesnut and Drew 1888-7-9 Humboldt Kneeland Comment
  UC1223464  Trifolium eriocephalum var. eriocephalum Joseph P. Tracy 1949-8-4 18415 Humboldt toward Trinity Summit (Mud Springs, on rd from Hoopa) 1341 Comment
  HSC15119  Trifolium fucatum A. E. Inman 1962-5-25 Humboldt Mad River, Lindsey Creek Jct., 200 yards W of Lindsey Creek Comment
  HSC29728  Trifolium fucatum J. D. Ackerman 1973-4-19 43 Humboldt Off Redwood Ave., Arcata Comment
  UC418985  Trifolium fucatum H. E. and S. T. Parks May 1930 738 Humboldt vicinity Bridgeville Comment
  CHSC98381  Trifolium howellii Dean Wm. Taylor; Tom Engstrom 2006-8-3 19574 Humboldt Snow Camp Lake; un-named first-order tributary to Redwood Creek not shown on USGS map 1 mile NE of the lake. 1249 Comment
  HSC59064  Trifolium incarnatum Thomas Wood 1979-4-6 95 Humboldt On Hwy. side W of 2nd bridge overpass from Eureka, on Gunther Island Comment
  HSC71336  Trifolium longipes J. P. Smith 1976-5-30 8828 Humboldt Near Black Rock on road to Clear Lake 1524 Comment
  HSC75475  Trifolium longipes J. O. Sawyer 1980-7-18 3622 Humboldt North Trinity Mountain Research Natural Area, north of Mill Creek Lake to Red Cap Hole. Comment
  HSC99727  Trifolium longipes subsp. oreganum Glenn W. K. Shelton 2010-7-16 22 Humboldt Buck Flat on Titlow Hill Rd. 1512 Comment
  RSA168855  Trifolium macraei Joseph P. Tracy 1950-6-18 18842 Humboldt Cape Ridge one mile est of Cape Mendocino. 152 Comment
  UC1197233  Trifolium macraei Joseph P. Tracy 1923-5-19 6209 Humboldt near Trinidad; Northern Coast Ranges 15 Comment
  UC1223361  Trifolium macraei Joseph P. Tracy 1950-6-18 18842 Humboldt 1 mi e Cape Mendocino (Cape Ridge, at roadside at top of ridge) 152 Comment
  UC495696  Trifolium microdon Joseph P. Tracy 1927-6-5 8102 Humboldt Valley of South Yager Creek Northern Coast Ranges 762 Comment
  UC1197486  Trifolium obtusiflorum Joseph P. Tracy 1927-5-30 8092 Humboldt Garberville vicinity Northern Coast Ranges 121 Comment
  UC1197499  Trifolium oliganthum Joseph P. Tracy 1906-6-10 2471 Humboldt near Wrangleton (Kneeland Prairie); Northern Coast Ranges 152 Comment
  UC160937  Trifolium oliganthum Joseph P. Tracy 1903-5-23 1895 Humboldt Alder Point Eel River; Northern Coast Ranges 152 Comment
  HSC12341  Trifolium pratense Steve Dorei 1970-10-26 113 Humboldt SE corner of Old Arcata Rd. and Freshwater Rd. Comment
  RSA168849  Trifolium pratense Joseph P. Tracy 1934-8-6 13558 Humboldt Near Blue Lake, along Mad River Comment
  UC33491  Trifolium repens Chesnut and Drew 1888-7-11 Humboldt Eureka Comment
  HSC96483  Trifolium repens Gordon Leppig 1997-6-19 450 Humboldt Big Lagoon County Park, Big Lagoon Bog 3 Comment
  HSC103979  Trifolium subterraneum Kyle Brown 2015-4-25 42 Humboldt Arcata, trail along the Mad River 8 Comment
  HSC48378  Trifolium subterraneum Mark Flippo 1978-4-18 39 Humboldt McKinleyville, Bella Vista Hill Comment
  HSC49247  Trifolium subterraneum R. Sutherland 1978-5-19 2 .19578 Humboldt Mckee Flat 296 Comment
  UCD109390  Trifolium subterraneum R. Tofsrud 1949-7-1 s.n. Humboldt Hydesville. Comment
  HSC45131  Trifolium variegatum R. Sutherland 1978-6-1 3 .1678 Humboldt 213 Comment
  JEPS4134  Trifolium variegatum var. variegatum Joseph P. Tracy 1929-5-5 8573 Humboldt Miranda Northern Coast Ranges, South Fork Eel River 121 Comment
  HSC15190  Trifolium wormskioldii R. E. Hafenfeld 1965-5-9 24 Humboldt Jct. County Rd. and Gold Bluff Beach Rd. Comment
  HSC14178  Triglochin maritima D. E. Anderson 1962-5-10 2209 Humboldt Lanphere's Comment
  UC1134686  Trillium albidum R. Stahelin 1933-5-17 Humboldt Arcata City Park Eureka Quad., Arcata City Park Comment
  HSC101812  Trillium albidum Kjirsten A. Wayman 2012-4-29 314 Humboldt Near Burnt Ranch, south of Hwy 299 on FR 5N40, west of intersection with 5N27, N 40.78805 deg. W 123.51164 deg. 942 Comment
  HSC28003  Trillium albidum Maralyn O'Meara 1972-5-29 77 Humboldt 18.6 mi. up Bald hills Rd. from junction with Hwy. 101 near Orick 915 Comment
  UC902042  Trillium angustipetalum Joseph P. Tracy 1949-6-25 18350 Humboldt near Box Camp Trinity Summit 1524 Comment
  HSC96776  Trillium kurabayashii M. Mesler 2006-5-25 603 Humboldt Bald Hills FS, 18.8 mi. SE of Hwy. 101 915 Comment
  HSC12429  Trillium ovatum Gary J. Stebbins 1970-4-5 56 Humboldt Along rd. to Camp Bauer 1.1 mi. from Korbel Comment
  HSC95729  Trillium ovatum Steven Lee 2004-4-13 19 Humboldt Hillside along Jolly Giant Creek, Arcata Community Forest Comment
  POM109201  Trillium ovatum Marcus E. Jones 1924-4-28 s.n. Humboldt Scotia. Comment
  CAS-BOT-BC133395  Trillium ovatum Doris K. Kildale 1926-3-25 1630 Humboldt Foot of Liscom Hill near Essex 30 Comment
  HSC89454  Trillium ovatum M. Roantree 1985-4-28 25 Humboldt NW side of Trinidad Head along trail Comment
  UC1537232  Trillium ovatum Gordon H. True Jr. 1936-2-26 329 Humboldt on Eel R. near Pepperwood; Eel. R. 91 Comment
  UC709437  Trillium ovatum Joseph P. Tracy 1941-4-8 16855 Humboldt at head of Willow Creek; Willow Creek Canyon, Willow Creek 762 Comment
  UCD19981  Trillium ovatum C. H. Lamoureux; R. Gankin 1956-3-17 1042 Humboldt Near southern boundary of Jensen Grove, on Hwy 101 between Meyers and Miranda. Comment
  HSC99366  Trillium ovatum subsp. ovatum K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-6-24 15 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  SEINET10459890  Triodanis perfoliata Chandler CHANDLER 1514 Humboldt Klamath River, somes bar. 427 Comment
  SEINET3821241 Image available Triodanis perfoliata Joseph P. Tracy 1908-7-1 2912 Humboldt Ridge between Van Duzen and Mad Rivers Comment
  UC1222435  Triphysaria eriantha subsp. eriantha Joseph P. Tracy 1932-5-10 9947 Humboldt terraces near Petrolia (Mattole Valley); Northern Coast Ranges, Mattole Valley 60 Comment
  HSC90809  Triphysaria eriantha subsp. eriantha Gail Newton 1982-5-1 2487 Humboldt Eureka, Elk River Wildlife Area Comment
  UC168980  Triphysaria eriantha subsp. eriantha Harley P. Chandler May, 1901 1249 Humboldt Bair's Ranch on Redwood Creek 152 Comment
  UC179947  Triphysaria versicolor subsp. faucibarbata Joseph P. Tracy 1914-5-14 4472 Humboldt Fort Seward; Northern Coast Ranges, Fort Seward 121 Comment
  UC1222436  Triphysaria versicolor subsp. versicolor Joseph P. Tracy 1944-5-14 17470 Humboldt Eureka 6 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
  UCD93605  Trisetum canescens A. H. Murphy 1947-5-12 s.n. Humboldt Roadside near Carlotta. Comment
  HSC13409  Trisetum canescens R. Long 1964-5-16 Humboldt Tish-tang Ranger Station near Willow Creek Comment
  HSC104044  Trisetum cernuum C. Reynolds 2015-4-25 38 Humboldt About 1 mi. from Redwood Creek Trailhead, off Bald Hills Road 26 Comment
  UC1056032  Trisetum cernuum H. E. and S. T. Parks June 1952 7551 Humboldt Spruce Cove; Trinidad 60 Comment
  UC1103151  Trisetum cernuum J. P. Tracy 1900-5-22 800 1/2 Humboldt immediate vicinity Eureka 0 Comment
  UC682073  Trisetum cernuum G. L. Stebbins Jr. and G. L. Church 1941-5-26 3107 Humboldt 5 mi n Orick (on U.S. Hwy 101) Comment
  UCD93907  Trisetum cernuum R. Tofsrud 1949-7-1 s.n. Humboldt On road between Scotia and Capetown. Comment
  JEPS559  Triteleia hyacinthina Joseph P. Tracy 1937-7-19 15451 Humboldt nw slope Buck Mountain (lower foothills) 762 Comment
  UC1197719  Triteleia laxa Joseph P. Tracy 1914-7-5 4563 Humboldt High Prairie on Bald Mountain; Northern Coast Ranges 1066 Comment
  UC709429  Triteleia laxa Joseph P. Tracy 1941-6-15 16911 Humboldt opposite Kings Peak; Wilder Ridge 762 Comment
  HSC72050  Tropaeolum majus J. M. DiTomaso 1979-5-10 947 Humboldt Corner of 13th and Union St., Arcata. Comment
  SDSU2008  Tsuga heterophylla D. F. Howe 1963-7-7 3616 Humboldt 5 miles north of Orick on #101. Comment
  HSC69853  Typha latifolia R. Kalal 1980-7-20 91 Humboldt Along road to Arcata Marsh Project, foot of I St., Arcata. 2 Comment
  HSC40296  Umbellularia californica Lloyd Simpson 1977-4-17 253 Humboldt Warren Creek Rd. 0.25 mi. from West End Rd. 30 Comment
  HSC46102  Umbellularia californica J. P. Smith, J. O. Sawyer 1975-4-6 8058 Humboldt N of Briceland on rd. to Hwy. 101 Comment
  UC1239527  Uropappus lindleyi Joseph P. Tracy 1927-5-8 7973 Humboldt grassy slopes facing South Fork Eel Rivar (Phillipsville); Northern Coast Ranges, South Fork Eel River, Phillipsville 121 Comment
  HSC62761  Urtica dioica subsp. gracilis J. M. DiTomaso 1979-4-21 889 Humboldt 50 yds. from Little River, 200 yds. from beach, 11 mi. N of Arcata. Comment
  HSC47491  Vaccinium ovatum Sheila Logan 1978-4-9 15 Humboldt Fieldbrook, 1/2 mi. E of McKinleyville on Murray Rd. 122 Comment
  POM118414  Vaccinium ovatum Marcus E. Jones 1924-4-26 s.n. Humboldt Scotia. Comment
  UCD118109  Vaccinium ovatum T. I. Storer 1931-7-1 2221 Humboldt Coast. Comment
  CAS-BOT-BC199420  Vaccinium parvifolium Joseph P. Tracy 1927-6-12 8133 Humboldt Horse Mountain 1432 Comment
  JEPS66689  Vaccinium parvifolium Lincoln Constance 1934-5-31 759 Humboldt Bull Creek Region: Bull Creek flat, along Bull Creek from W boundary of Park to Grasshopper Peak (Squaw Creek) rd. N side of creek, South Fork Eel River Comment
  UC32671  Vaccinium parvifolium Chesnut and Drew 1888-7-11 Humboldt Jarnigan's Comment
  UC602512  Valeriana sitchensis subsp. scouleri Joseph P. Tracy 1924-4-27 6643 Humboldt Willow Creek Canyon; Northern Coast Ranges 609 Comment
  HSC48152  Valeriana sitchensis subsp. sitchensis Brad Klipfel 1975-5-30 656 Humboldt N of Horse Mtn. Comment
  CAS-BOT-BC76056  Vancouveria hexandra Greg de Nevers 2001-4-17 12244 Humboldt Humboldt Redwoods State Park. 91 Comment
  HSC57141  Vancouveria hexandra Overton, Butler 1979-7-26 9925 Humboldt Near Willow Creek, close to the town of Willow Creek 1326 Comment
  POM118508  Vancouveria hexandra Marcus E. Jones 1924-4-26 s.n. Humboldt Scotia Comment
  UC502924  Vancouveria hexandra Joseph P. Tracy 1932-7-15 10620 Humboldt near Corral Prairie (Trinity Summit); Klamath Mountains, , near Corral Prairie 1524 Comment
  UC854707  Vancouveria hexandra Elizabeth Parsons Hawver June 1915 Humboldt Carlotta Comment
  HSC96678  Vancouveria hexandra Kristina Folland 2001-5-6 22 Humboldt Top of Fickle Hill Rd. Comment
  HSC97944  Vancouveria hexandra Cara Witte 2007-6-21 325 Humboldt Board Camp Mountain. Forest Service Road 4N38. 1430 Comment
  CAS-BOT-BC76084  Vancouveria planipetala Doris K. Kildale 1926-6-27 2192 Humboldt Sweasey Lake, McClellan Mountain. 822 Comment
  CAS-BOT-BC76093  Vancouveria planipetala M. S. Jussel 1931-5-2 113 Humboldt Garberville. Comment
  JEPS33028  Vancouveria planipetala W. L. Jepson 1934-5-7 16695 Humboldt Bull Creek Comment
  UC1126306  Vancouveria planipetala A. E. Wieslander 1931-5-19 207 Humboldt near Orleans; Klamath Forest, Hoopa Quadrangle Comment
  UC535767  Vancouveria planipetala Eleanor Armstrong 1934-5-18 Humboldt Richardson Grove Comment
  JEPS33032  Vancouveria planipetala Lincoln Constance 1934-5-23 603 Humboldt s slope of mt. above Look Prairie Bull Creek area (Bull Creek area); , above Look Prairie 365 Comment
  RSA259548  Vancouveria planipetala A. Montalvo, J. D. Ackerman 1974-7-17 377 Humboldt Grizzly Creek State Park, along Hwy. 36, between Carlotta and Bridgeville. Comment
  UC1196348  Vancouveria planipetala Joseph P. Tracy 1919-5-30 5171 Humboldt near Willow Creek (hill slopes at West Side of Trinity River); Northern Coast Ranges, w side of Trinity River, Willow Creek 152 Comment
  HSC21173  Verbascum thapsus H. D. Sumner 1959-7-13 Humboldt Redwood Creek near Hwy. 299 305 Comment
  HSC98115  Verbena lasiostachys Cara Witte 2007-6-27 369 Humboldt Near Grouse Mountain. Along Forest Service Road 4N32. Near intersection with 4N32B 1516 Comment
  SEINET1008963  Verbena lasiostachys Alma L. Moldenke, Harold N. Moldenke 1975-1 30232 Humboldt Van Duzen River valley east of Bridgeville, Humboldt County, California. 732 Comment
  HSC21190  Veronica americana C. B. Wolf 1927-8-22 774 Humboldt Big Lagoon Comment
  SD88369  Veronica americana Darley F. Howe 1972-5-7 Humboldt Trinidad Comment
  CDA6483  Veronica filiformis F. Wetherbee 1960-7-2 Humboldt Eureka. 0 Comment
  HSC100687  Veronica peregrina Carl C. Marshall Jun 1887 203 Humboldt Humboldt County. Comment
  SEINET6988462 Image available Veronica peregrina var. xalapensis Wanda P. Vestal, A. G. Vestal 1937-6-22 s.n. Humboldt Kneeland prairie near serpentine outcrops, about 4 miles southeast of Kneeland. Comment
  RSA80042  Veronica scutellata F. W. Peirson 1923-7-11 3838 Humboldt 7 miles N of Arcata. Comment
  SEINET3825239 Image available Veronica scutellata Malcolm A. Nobs, S. Galen Smith 1949-8-3 1190 Humboldt Southern outskirts of Eureka Comment
  UC582548  Veronica scutellata Joseph P. Tracy 1927-7-17 8275 Humboldt on lower w foothills of Chaparral Mountain (Three Cabins); North Coast Ranges, , Three Cabins 457 Comment
  HSC21220  Veronica serpyllifolia William J. Ferlatte 1963-5-8 38 Humboldt N end of Redwood Bowl, HSC campus, Arcata Comment
  HSC99443  Vicia americana subsp. americana K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-7 93 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  HSC15258  Vicia americana var. americana J. P. Tracy 1935-5-26 13908 Humboldt Iaqua 610 Comment
  HSC37952  Vicia americana var. americana Peter Sorensen 1976-6-16 Humboldt Woodley Island Comment
  UC1197463  Vicia americana var. americana J. P. Tracy 1901-5-30 1111 Humboldt immediate vicinity Eureka 0 Comment
  UC1197468  Vicia americana var. americana Joseph P. Tracy 1914-7-12 4580 Humboldt near Hookton; Northern Coast Region, Humboldt Bay Region 0 Comment
  RSA46826  Vicia americana var. americana Doris K. Kildale 1926-3-26 1643 Humboldt Old Fortuna Rd Comment
  RSA34309  Vicia hirsuta C. Kistner 1935-5-5 s.n. Humboldt Arcata Comment
  UC1222589  Vicia hirsuta Joseph P. Tracy 1943-7-1 17428 Humboldt Eureka; 7th and I Streets, vacant lot Comment
  HSC15255  Vicia sativa subsp. nigra W. F. Nickel 1965-4-28 Humboldt On S side of Biological Science Building, near baseball field Comment
  HSC39995  Vicia sativa subsp. sativa J. P. Smith, J. O. Sawyer 1975-5-31 8145 Humboldt Samoa Peninsula adjacent to Redwood Workshop Area. Comment
  CAS-BOT-BC263938  Viola adunca Doris Kildale 1931-5-10 10582 Humboldt Snow Camp Comment
  UC502937  Viola bakeri Joseph P. Tracy 1932-7-15 10596 Humboldt ridges e of Corral Prairie; Klamath Mountains, Trinity Summit 1828 Comment
  UC302051  Viola cuneata Joseph P. Tracy 1926-6-20 7615 Humboldt Horse Mountain; Northern Coast Ranges, Horse Mountain 1524 Comment
  HSC55638  Viola glabella Overton, Butler 1979-7-24 9670 Humboldt Near Titlow Hill, close to the town of Willow Creek 1250 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
  POM118644  Viola glabella Marcus E. Jones 1924-4-26 s.n. Humboldt Scotia. Comment
  HSC45612  Viola glabella Diane L. Reed 1978-5-7 54 Humboldt Top of Friday Ridge, 3 mi. S of Brush Mtn. on Friday Ridge Rd. Comment
  RSA249390  Viola glabella D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5592 Humboldt Mount Lassic and 2 smaller peaks to immediate east. 1768 Comment
  RSA46691  Viola hallii Doris K. Kildale 1938-6-5 15398 Humboldt Horse Mountain Comment
  RSA21092  Viola hallii Carl B. Wolf 1937-6-14 8820 Humboldt Kneeland Prairie; North Coast Range. 823 Comment
  UC1198455  Viola ocellata J. P. Tracy 1903-5-23 1894 Humboldt Alder Point, on Eel River 152 Comment
  SEINET201005 Image available Viola palustris J. P. Tracy 1904-7-31 2126 Humboldt Eureka 61 Comment
  HSC34806  Viola sempervirens Lon Hall 1975-3-27 301 Humboldt Near Shelter Cove, above Bear Creek 366 Comment
  HSC32889  Viola sheltonii Thomas W. Nelson 1973-5-30 975 Humboldt Humboldt/Trinity Co. line, Mt. Lassic 1790 Comment
  HSC97572  Viola sheltonii C. Witte 2007-5-18 34 Humboldt Along National Forest 1. Approximately 1 mile north of intersection with 5N09. 1456 Comment
  RSA46711  Vitis californica Doris K. Kildale 1926-5-2 1864 Humboldt Willow Creek Flat. Comment
  HSC9825  Vulpia bromoides E. W. Styskel 1964-4-3 57 Humboldt 0.25 mi. S of Garberville along Sprowl Creek Rd. Comment
  UCD93706  Vulpia microstachys H. S. Yates 1936-6-17 5712 Humboldt near Burr Valley. 914 Comment
  CAS-BOT-BC184233  Vulpia microstachys var. pauciflora Joseph P. Tracy 1926-5-2 7440 Humboldt Trinity River Valley, near the South Fork 182 Comment
  UC1145194  Vulpia microstachys var. pauciflora Joseph P. Tracy 1936-6-17 14961 Humboldt nw slope Buck Mountain (Burr Valley); , Burr Valley 1066 Comment
  UC525649  Vulpia microstachys var. pauciflora Joseph P. Tracy 1933-6-13 12599 Humboldt near summit on road from Hoopa to Bair's; Hoopa Mountain 1066 Comment
  HSC9924  Vulpia myuros Yarick 1960-8-3 Humboldt K & K. 7 mi, Krueger Cr. Comment
  UCD94901  Vulpia myuros A. H. Murphy 1951-6-1 50 Humboldt Erikson Glade, south slope of South Fork Mtn., about 3 miles east of Low Gap. Comment
  HSC81925  Whipplea modesta Thomas W. Nelson, Jane P. Nelson 1979-7-3 4954 Humboldt Along road to Joe Losey property at junction of Kneeland and Maple Creek Rds. 610 Comment
  OBI36661  Whipplea modesta David J. Keil 1983-7-2 17322 Humboldt Ca. 4 mi SE of SR 299 along Titlow Hill rd below Horse Mtn Summit Rd 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
  JEPS60110  Woodwardia fimbriata Lincoln Constance 1934-6-2 784 Humboldt S Fork Eel River; Bull Creek Region Comment
  JEPS60113  Woodwardia fimbriata W. L. Jepson 1936-8-15 17903 Humboldt Grizzly Creek, Van Duzen River Grizzly Creek; Van Duzen River Comment
  HSC71670  Wyethia angustifolia M. A. Baker 1980-6-26 2382 Humboldt Near Sims Creek 610 Comment
  SBBG36550  Wyethia angustifolia H. and M. Dearing 1933-5-15 2521 Humboldt Weott Comment
  UC582645  Wyethia angustifolia Joseph P. Tracy 1933-8-6 12937 Humboldt French Camp Ridge 1066 Comment
  JEPS32100  Wyethia angustifolia W. L. Jepson 1903-6 2201 Humboldt Bells Spring Ridge (= Mail Ridge) Bells Spring Ridge 1005 Comment
  HSC71800  Wyethia longicaulis M. A. Baker 1980-6-8 1924 Humboldt Near Buck Flat. 1554 Comment
  UC302180  Wyethia longicaulis Joseph P. Tracy 1926-5-30 7517 Humboldt near Horse Mt. Pass (on Trinity Highway); Northern Coast Ranges, Horse Mountain 883 Comment
  HSC25958  Xanthium strumarium Thomas W. Nelson 1970-10-31 286 Humboldt Eel River near N end of the Scotia Bluff. Comment
  HSC37690  Xanthium strumarium R. Sutherland 1976-8-13 31 .13876 Humboldt In mouth of Redwood Creek at South Fork of Eel River. 88 Comment
  RSA441183  Xanthium strumarium M. B. Dunkle 1936-8-22 4856 Humboldt Williams Grove, Eel River. 213 Comment
  UC154242  Yabea microcarpa Joseph P. Tracy 1906-5-13 2454 Humboldt Humboldt Bay Northern Coast Region (sand dunes of ocean beach) Comment
  SEINET12197025  Zauschneria californica E. A. York 1990-1-10 2675 Humboldt USGS Redwood Field Station, Arcata Comment
  HSC79498  Zeltnera muehlenbergii Kenneth Clark 1979-7-1 454 Humboldt Shelter Cove, Dead Man's Gulch 9 Comment
  CDA866  Zostera japonica Gordon Leppig 2002-7-8 1782 Humboldt Indian Island, SW shore, mid-intertidal zone, +1.2 MLW. 0 Comment



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