Search Results — 2000 specimen records retrieved (1370 records with coordinates)
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Results for search: County=HUMBOLDT; Source=All;   

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(For large data reqests, please contact Jason Alexander, jason_alexander@berkeley.edu.)

 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/consortium/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  BLMAR207  Abies concolor Jennifer Anthony-Wheeler 1996-7-9 207 Humboldt Pilot ridge., growing as component of conifer mxed hardwood forest ar elevation range 1280 Comment
Read comments
Nov 1 2013
  CAS-BOT-BC78051  Abies grandis L. R. Abrams 1918-6-15 7100 Humboldt Brannan Mt. near Willow Creek 1371 Comment
  HSC1343  Abies grandis Francis Winter 1960-5-14 Humboldt Samoa Peninsula, 6 mi. W of Arcata Comment
  HSC55173  Abies procera Gilbert Muth 1979-8-1 12174 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1677 Comment
  UC1229745  Abies procera G. L. Anderson 1962-8-21 5 Humboldt Horse Trail Ridge Six Rivers National Forest, Horse Trail Ridge (sw slope) 1828 Comment
  HSC16136  Abronia latifolia S. J. Hawks 1965-5-13 55 Humboldt 1 mi. W of McKinleyville, past the end of Murray Rd. Comment
  HSC23109  Abronia latifolia Norman Dennis 1965-6-8 106 Humboldt Samoa Peninsula along the W side of Humboldt Bay Comment
  UCD109781  Abronia latifolia Linda M. Barker 1976-5-13 1490 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  RSA0025082  Abronia latifolia I. L. Wiggins 1930-7-7 4672 Humboldt Sand dunes near Samoa. Comment
  CAS-BOT-BC330548  Acer circinatum H. E. McMinn 1922-8-5 355 Humboldt Near Van Duzen River Comment
  RSA183640  Acer circinatum D. E. Anderson 1965-5-8 3627 Humboldt 0.6 miles west of bridge over North Fork of Mad River, along Highway 299 Comment
  SEINET7892760  Acer circinatum W. D. Billings 1940-6-25 1349 Humboldt Cedar Creek, 35 miles east of Arcata Comment
  UC668175  Acer glabrum var. glabrum Joseph P. Tracy 1933-7-11 12707 Humboldt Grouse Mountain North Coast Ranges, Grouse Mountain 1524 Comment
  HSC31635  Achillea millefolium Glenn McGourty 1974-4-27 21 Humboldt Upper banks of the Mattole River Comment
  HSC58064  Achillea millefolium G. L. Clifton, Griswold 1979-8-1 11941 Humboldt Near Mill Creek Lakes, close to the town of Hoopa. 1692 Comment
  UC1080536  Achillea millefolium S. S. Tillett 1956-7-6 624 Humboldt along, (in clear area along ridge 12.5 mi from Orleans) Bar Shanty Road; Orleans 1173 Comment
  CAS-BOT-BC400015  Achlys triphylla Marcus E. Jones 1924-4-26 s.n. Humboldt Scotia Comment
  CAS-BOT-BC400017  Achlys triphylla Harley P. Chandler 1901-6-1 1293 Humboldt North Coast Ranges, Hupa Indian Reservation 182 Comment
  HSC31126  Achlys triphylla J. O. Sawyer 1970-6-24 2261 Humboldt S of Mill Creek Gap, FS Rd. 10N02 1433 Comment
  HSC70631  Achlys triphylla R. York 1980-5-18 585 Humboldt Near Black Mtn. 390 Comment
  HSC73179  Achlys triphylla M. A. Baker 1980-5-18 1295 Humboldt Near Black Mtn. 1006 Comment
  SBBG2285  Achlys triphylla H. and M. Dearing 1933-5-16 397 Humboldt Weott Comment
  HSC100397  Achlys triphylla Carl C. Marshall Jun 1886 328 Humboldt Hills. Comment
  RSA12436  Achlys triphylla C. B. Wolf 1934-7-2 5857 Humboldt 2 miles from Bald Mt. on road to Korbel. 762 Comment
  RSA183594  Achlys triphylla D. E. Anderson 1963-5-1 2201 a Humboldt 1 mile west of Hoopa Comment
  SD42586  Achlys triphylla subsp. triphylla Carl B. Wolf 1937-6-19 8914 Humboldt North Coast Range, 7.2 miles above Bridgeville on grade to Dinsmores 455 Comment
  CAS-BOT-BC210652  Achnatherum lemmonii Joseph P. Tracy 1933-5-20 12247 Humboldt Mattole Valley 152 Comment
  CAS-BOT-BC210658  Achnatherum lemmonii Henry M. Pollard 1946-9-2 s.n. Humboldt Orleans Mt. 1524 Comment
  UC526666  Achnatherum lemmonii Joseph P. Tracy 1927-5-14 8000 Humboldt near south fork Trinity River (Trinity River Valley); Northern Coast Ranges, Trinity River Valley 182 Comment
  SEINET201042  Achnatherum occidentale subsp. californicum J. P. Tracy 1932-7-12 10446 Humboldt Trinity Summit; Corral Prairie 1524 Comment
  UCSB16556  Acmispon americanus Breedlove, Dennis 1962-6-7 Humboldt 1.5 miles south of Samoa on peninsula on western side of Humboldt Bay 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
  HSC48855  Aconitum columbianum subsp. columbianum Brad Klipfel 1973-7-15 216 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  CDA24176  Actaea rubra subsp. arguta F. Wetherbee 1962-7-11 Humboldt Bear River Ridge. 0 Comment
  HSC4590  Adenocaulon bicolor D. E. Anderson 1961-9-23 1831 Humboldt 2.3 mi. S of Kneeland corner Comment
  HSC58316  Adenocaulon bicolor Overton, Butler 1979-8-2 12604 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  UC582523  Adenocaulon bicolor Joseph P. Tracy 1932-7-17 10650 Humboldt fir woods near Corral Prairie; Trinity Summit 1584 Comment
  UC76581  Adenocaulon bicolor Mrs. M. H. Manning 1901-1-1 Humboldt near Hupa Comment
  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
  HSC54522  Adiantum aleuticum Overton, Butler 1979-7-23 9453 Humboldt Near Horse Mountain Mine, close to the town of Willow Creek 1295 Comment
  UC1239771  Adiantum aleuticum Joseph P. Tracy 1927-7-17 8267 Humboldt Butler Valley; Northern Coast Ranges 304 Comment
  UC62739  Adiantum aleuticum P. E. Goddard 1901-7-12 74 Humboldt Hupa Comment
  CAS-BOT-BC65626  Adiantum jordanii Doris K. Kildale 1926-5-2 1899 Humboldt Willow Creek Flat - Trinity River tributary 152 Comment
  UC811115  Adiantum jordanii George Neville Jones 1936-3-22 8662 Humboldt s fork Eel River near Garberville Comment
  SEINET181170 Image available Adiantum pedatum Bassett Maguire 1934-6-8 15048 Humboldt unspecified Comment
  HSC53932  Agastache urticifolia Griswold, Butler 1979-7-11 6950 Humboldt Near Snow Camp Mtn., close to the town of Willow Creek. 1320 Comment
  RSA93723  Ageratina occidentalis F. W. Peirson 1926-7-13 7052 Humboldt Near Blue Lake, Mad River Comment
  UC194430  Ageratina occidentalis P. E. Goddard 1907-7-14 b 128 Humboldt along Van Duzen <River> Van Duzen <River> Comment
  HSC63846  Agoseris grandiflora M. A. Baker 1979-6-25 914 Humboldt Comment
  UC582752  Agoseris grandiflora var. grandiflora Joseph P. Tracy 1928-7-25 8488 Humboldt Big Lagoon Big Lagoon 60 Comment
  UC1222928  Agoseris grandiflora var. grandiflora Joseph P. Tracy 1950-7-15 19047 Humboldt 1 mi n Willow Creek; Trinity River Comment
  UC169332  Agoseris heterophylla var. heterophylla Joseph P. Tracy and Ernest B. Babcock 1912-5-11 3625 Humboldt near, (hillside between Hydesville and Alton) Hydesville; Northern Coast Ranges, Alton 30 Comment
  UC92278  Agoseris heterophylla var. heterophylla W. W. Price 1900-6-30 Humboldt Mad River Comment
  UC1199484  Agoseris heterophylla var. heterophylla Joseph P. Tracy 1927-5-14 8030 C Humboldt at Willow Creek; Trinity River Valley 152 Comment
  UC29354  Agoseris heterophylla var. heterophylla H. N. Bolander 1867-1 6494 Humboldt Red Mountains Comment
  BLMAR321  Agrostis densiflora Jennifer Anthony-Wheeler 2002-8-9 321 Humboldt Lost Coast Headland, Trail to Guthrie creek on west facing slope 60 Comment
  HSC8836  Agrostis densiflora D. C. Juve 1964-5-16 41 Humboldt Camp Tish-Tang, Campbell Creek Ranger Station, off Hwy 96 Comment
  RSA87118  Agrostis densiflora Joseph P. Tracy 1927-6-26 8216 Humboldt Stone Lagoon Comment
  SEINET200940  Agrostis densiflora A. A. Beetle 1941-7-8 2884 Humboldt Stone lagoon facing ocean. 6 Comment
  UC1145066  Agrostis densiflora Joseph P. Tracy 1938-8-28 16136 Humboldt clay bluff facing ocean Stone Lagoon 6 Comment
  HSC39906  Agrostis exarata J. P. Smith, Steve Selva 1970-6-30 4129 Humboldt Comment
  UC526897  Agrostis exarata Joseph P. Tracy 1927-7-17 8271 Humboldt grassy slopes on lower western foothills Chaparral Mountain (small swampy pond); Northern Coast Ranges, Three Cabins 457 Comment
  UC552751  Agrostis exarata Joseph P. Tracy 1934-7-2 13296 Humboldt Trinidad 3 Comment
  HSC72675  Agrostis hallii J. P. Smith 1977-7-3 9257 Humboldt Six Rivers National Forest. FS Rd. 13N01, 3 mi. from its junction with Hwy. 36 549 Comment
  UCD52683  Agrostis hallii J. I. Mallory 1955-9-17 124 Humboldt one mile west of McClellan Ranch. 304 Comment
  HSC98624  Agrostis pallens Cara Witte 2007-7-11 500 Humboldt Grouse Mountain. Forest Service Road 5N04. Near spring. 1583 Comment
  SEINET3917179  Agrostis stolonifera Thomas Nelson, James Nelson 1976-7-28 3046 Humboldt West of alder Springs along 2S08.; 0 1554 Comment
  HSC104460  Aira caryophyllea Jeff Barrett 2009-4-1 Humboldt Samoa Peninsula, Fairhaven, along south side of Bay Street 5 Comment
  UC1103303  Aira caryophyllea J. P. Tracy 1899-7-22 330 Humboldt Immediate vicinity of Eureka 0 Comment
  UC630529  Aira caryophyllea H. E. and S. T. Parks June, 1936 5850 Humboldt Spruce Cove Trinidad Comment
  UCD55761  Aira caryophyllea Linda M. Barker 1976-4-30 1411 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  CAS-BOT-BC138327  Aira caryophyllea var. caryophyllea A. A. Heller 1923-7-8 13765 Humboldt At a State redwood camp 10 miles south of Dyerville. Comment
  CAS-BOT-BC138334  Aira caryophyllea var. caryophyllea David D. Keck 1948-7-1 5972 Humboldt South side of Big Lagoon. Comment
  CAS-BOT-BC138333  Aira caryophyllea var. caryophyllea Henry M. Pollard 1948-7-23 s.n. Humboldt Reece Point near Orleans. Comment
  RSA517225  Allium acuminatum Barbara Ertter, Thomas J. Delendick 1987-5-16 6920 Humboldt Vista Point just W of Berry Summit on Highway 299, ca. 15 air miles E of Arcata. 915 Comment
  HSC98646  Allium amplectens Cara Witte 2007-6-7 233 Humboldt White Oak Opening. Along Kinsey Ridge. 1238 Comment
  CAS-BOT-BC460747  Allium amplectens C. C. Harris; S. K. Harris 1936-6-24 645 Humboldt At point where the road from Bridgeville to Dinsmore crosses the Little Van Duzen River. 701 Comment
  CAS-BOT-BC460755  Allium amplectens Alice Eastwood; John Thomas Howell 1937-6-23 4832 Humboldt Near Yager Comment
  SEINET195362  Allium amplectens Unknown 1907-6-23 4832 Humboldt Near Yager. Comment
  UC303139  Allium bolanderi Joseph P. Tracy 1925-6-7 7073 Humboldt Willow Creek Canyon Northern Coast Ranges, Willow Creek Canyon Comment
  HSC36494  Allium falcifolium Thomas W. Nelson, James Nelson, Jane P. Nelson 1975-6-14 1897 Humboldt Beside branch off FS 2S08 to Pine Mtn. Comment
  HSC82040  Allium falcifolium Thomas W. Nelson, James Nelson 1980-6-10 5407 Humboldt Along Swayback Ridge 4-wheel drive rd. 2.5 mi. N of the junction with USFS rd. 1S07 1463 Comment
  HSC67211  Allium hoffmanii Thomas W. Nelson, James Nelson 1980-7-10 5440 Humboldt Along branch rd. off Swayback Ridge Rd., 0.5 mi. E of junction 1372 Comment
  UC202013  Allium unifolium Joseph P. Tracy 1918-7-5 5004 Humboldt banks along Mattole River Northern Coast Ranges, White Thorn Valley, Mattole River 304 Comment
  UCD138614  Allium unifolium K. Esau 1934-5-7 s.n. Humboldt Above Fort Seward. 457 Comment
  UC144075  Alnus rubra J. P. Tracy 1909-3-7 2943 Humboldt Immediate vicinity of Eureka 0 Comment
  HSC99022  Alnus viridis subsp. sinuata Cara Witte 2008-7-16 908 Humboldt Board Camp Mountain. Forest Service Road 4N38. 1/2 mile south of intersection with National Forest 1. 1409 Comment
  POM160842  Alnus viridis subsp. sinuata Joseph P. Tracy 1919-9-18 5241 Humboldt Trinity Summit. 1829 Comment
  HSC8894  Alopecurus pratensis D. J. McVean 1965-5-18 78 Humboldt Old Arcata Rd., S of intersection with Indianola Rd. Comment
  SEINET11674241  Alopecurus saccatus J. P. Tracy 1951-1 19525 Humboldt back of Everett Beck house (formerly George Gray) bed of former Goose Lake, Hydesville Comment
  CAS-BOT-BC142882  Amelanchier alnifolia var. semiintegrifolia Doris K. Kildale 1926-6-27 2225 Humboldt Little Van Duzen River on Weaverville-Bridgeville Road 640 Comment
  CAS-BOT-BC142888  Amelanchier alnifolia var. semiintegrifolia Doris K. Kildale 1927-5-14 3193 Humboldt Big Lagoon Comment
  HSC41293  Amelanchier pallida Brad Klipfel 1974-7-27 492 Humboldt Horse Mtn. Comment
  UC1103317  Ammophila arenaria Joseph P. Tracy 1947-7-3 17767 Humboldt sand dunes at mouth of Little R. 6 Comment
  HSC3519  Amsinckia intermedia J. W. Johnson 1962-4-21 1286 Humboldt Arcata; William Lanphere Farm about building Comment
  UC525582  Amsinckia intermedia Joseph P. Tracy 1932-5-17 10097 Humboldt near mouth of Willow Creek; Northern Coast Ranges, Trinity River 152 Comment
  UC1198609  Anagallis arvensis Joseph P. Tracy 1948-9-20 18222 Humboldt Hoopa Valley, along Mill Creek Hoopa Valley, Mill Creek 91 Comment
  UC1198610  Anagallis arvensis Joseph P. Tracy 1912-6-9 3676 Humboldt Alton Northern Coast Region, Alton 30 Comment
  HSC28135  Anagallis arvensis J. D. Ackerman 1973-5-6 47 Humboldt Redcrest Comment
  POM286830  Anagallis arvensis Lyman Benson 1929-7-19 1585 Humboldt Weet Ranger St. Comment
  CDA30216  Anaphalis margaritacea M. K. Beyers, I. Shepardson 2009-9-13 256 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
  RSA416577  Anaphalis margaritacea B. C. Templeton 1931-10-15 s.n. Humboldt Eureka Comment
  HSC4618  Anaphalis margaritacea J. Rockwell 1962-11-12 151 Humboldt Near Coast Guard Station Comment
  HSC55633  Anemone deltoidea Overton, Butler 1979-7-24 9642 Humboldt Near Titlow Hill, close to the town of Willow Creek 1250 Comment
  UC502926  Anemone deltoidea Joseph P. Tracy 1932-7-13 10489 Humboldt near Corral Prairie (Trinity Summit); Klamath Mtns, Trinity Summit 1524 Comment
  HSC98105  Anemone deltoidea Cara Witte 2007-6-27 365 Humboldt Forest Service Road 5N04. Near Grouse Mountain. Approximately 1/2 mile east of spring. 1561 Comment
  SJSU874  Anemone deltoidea A. C. Browne Sr. 1945-5-23 Humboldt Myers Flat Comment
  HSC41238  Anemone oregana var. oregana Brad Klipfel 1974-5-27 376 Humboldt Horse Mountain Comment
  JEPS14106  Angelica hendersonii Joseph P. Tracy 1937-8-22 15674 Humboldt Table Bluff 91 Comment
  UCD127224  Angelica hendersonii Joseph DiTomaso 1980-6-29 1636 Humboldt south side of Elkshead. 2 miles north of Trinidad. Comment
  HSC70546  Angelica tomentosa M. A. Baker 1980-7-19 3025 Humboldt Near Bret Hole. 1814 Comment
  UC1051577  Angelica tomentosa Joseph P. Tracy 1948-9-5 18185 Humboldt 3 mi s of Grizzly Camp (Trinity Summit); Trinity Summit 1524 Comment
  UC642243  Angelica tomentosa Joseph P. Tracy 1938-9-5 16145 Humboldt Northern Coast Ranges, Willow Creek Canyon Willow Creek Canyon Willow Creek Canyon; Northern Coast Ranges, Willow Creek Canyon 457 Comment
  UC642244  Angelica tomentosa Joseph P. Tracy 1938-9-5 16145 Humboldt Northern Coast Ranges, Willow Creek Canyon Willow Creek Canyon Willow Creek Canyon; Northern Coast Ranges, Willow Creek Canyon 457 Comment
  SD109165  Angelica tomentosa var. hendersonii Joseph M. DiTomaso 1980-7-29 1800 Humboldt Elkshead, ca. 2 miles north of Trinidad Comment
  CAS-BOT-BC271490  Anisocarpus madioides Doris K. Kildale 1927-4-30 1912 Humboldt Fruitland Hill, Ham's Road Comment
  UC302293  Anisocarpus madioides Joseph P. Tracy 1926-6-13 7605 Humboldt near Blue Lake; Northern Coast Ranges 152 Comment
  HSC58132  Antennaria howellii Gilbert Muth 1979-8-1 12135 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1677 Comment
  UCD74273  Antennaria stenophylla G. Ledyard Stebbins 1985-6-19 N- 501 Humboldt Nevada: Humboldt County. Santa Rosa Mountains. Along road north of Hinkey Summit, 1.4 miles NE of Martin Creek Guard Station. 1950 Comment
Read comments
Apr 16 2015
  UC1222876  Antennaria suffrutescens Joseph P. Tracy 1947-7-9 17864 Humboldt Horse Mountain 1432 Comment
  SEINET11853677  Antennaria suffrutescens J. P. Tracy 1947-1 17864 Humboldt Horse Mountain 1433 Comment
  CAS-BOT-BC84701  Anthemis arvensis M. Louise Hutchinson 1913-5-1 s.n. Humboldt Garberville Comment
  UC582631  Anthemis arvensis Joseph P. Tracy 1937-10-3 15691 Humboldt Willow Creek Trinity River Valley, Willow Creek 152 Comment
  HSC4670  Anthemis cotula Lincoln Constance 1934-5-27 694 Humboldt S Fork of Eel River, S end of Dyerville Bridge 46 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
  CHSC91538  Anthoxanthum odoratum G. Douglas Barbe; T. C. Fuller 1974-6-17 1848 Humboldt North Coast Ranges. At 707 'L' Street, Eureka, behind CSAA (Calif State Automobile Assoc.) district office. Comment
  UC905596  Anthoxanthum odoratum David D. Keck 1948-7-2 6010 Humboldt 1.5 mi. E. of Freshwater (Garfield), on Kneeland road Comment
  HSC8941  Anthoxanthum odoratum Paul Shields 1955-6-10 Humboldt Arcata, Humboldt State University campus. Comment
  JEPS83355  Antirrhinum vexillocalyculatum subsp. breweri David M. Thompson 1983-6-30 359 Humboldt 0.9 mi from Hwy. 299 in Willow Creek (2.7 mi from start of Patterson Rd (at end of River Rd), FS Rd 10N02 (to Waterman Ridge and Horse Linto Creek), 0.8 mi n of jct with Sunset Pl); Willow Creek, Willow Creek Quad. (15', 1952) 213 Comment
  JEPS83361  Antirrhinum vexillocalyculatum subsp. breweri David M. Thompson 1983-6-26 353 Humboldt about 2 mi se Miranda (0.9 mi wnw of Franklin K. Lane Redwood Grove, Phillipsville vicinity, on nnw side of Avenue of the Giants); Phillipsville, Garberville Quad. (15', 1951) 121 Comment
  RSA425833  Antirrhinum vexillocalyculatum subsp. breweri T. A. Bonser 1931-7-14 14970 Humboldt Garberville. Comment
  UC204117  Aphanes occidentalis Joseph P. Tracy 1918-5-1 4903 Humboldt Kneeland Prairie Northern Coast Ranges (towards McBrides) 762 Comment
  HSC73424  Aphanes occidentalis Robert Kirkpatrick, Doug Renwick 1981-4-3 147 Humboldt 2 mi. N of Coastguard Station on Samoa Blvd. 5 Comment
  POM89844  Apocynum sibiricum Chesnut, E. R. Drew 1888-07 s.n. Humboldt Grouse Creek Comment
  CAS-BOT-BC392160  Aquilegia formosa David D. Keck 1948-7-1 5974 Humboldt South side of Big Lagoon Comment
  HSC56075  Aquilegia formosa var. truncata G. L. Clifton, Griswold 1979-7-31 11751 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa. 1845 Comment
  HSC100611  Aquilegia truncata Carl C. Marshall Jun 1887 Humboldt Everywhere. Comment
  HSC57322  Arabis glabra Walter Overton, Butler 1979-7-23 9542 Humboldt Near Titlow Hill, close to the town of Willow Creek 1280 Comment
  HSC76348  Arabis glabra Denis Kearns 1981-7-22 520 Humboldt Near Whiteys Peak 1487 Comment
  UC162360  Arabis glabra Joseph P. Tracy 1908-6 2711 Humboldt opposite Buck Mountain; Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  HSC48750  Arabis holboellii var. retrofracta Brad Klipfel 1973-6-10 76 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 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
  RSA171939  Aralia californica R. F. Thorne 1957-9-2 19010 -a Humboldt Eel River. Burlington State Park, just S of Weott. Comment
  UC162626  Aralia californica Joseph P. Tracy 1911-7-5 3320 Humboldt near its mouth Willow Creek (tributary of Trinity R.); Northern Coast Ranges 304 Comment
  HSC74651  Arbutus menziesii M. A. Baker 1980-5-17 1235 Humboldt Near Le Perron Peak 792 Comment
  JEPS120247  Arceuthobium campylopodum Talitha Derksen and Keli McElroy 2012-8-2 Humboldt East slope of Blake Mountain, north end South Fork Mountain, 5 mi. west of Hyampom Comment
  UC582722  Arctostaphylos Joseph P. Tracy 1937-4-3 15246 Humboldt Willow Creek Trinity River Valley 152 Comment
  JEPS38977  Arctostaphylos canescens Joseph P. Tracy 1935-7-14 14064 Humboldt Horse Mountain 1432 Comment
  SD62040  Arctostaphylos canescens Darley F. Howe 1965-8-12 4129 Humboldt 7.9 miles south of Honeydew. Comment
  CAS-BOT-BC24095  Arctostaphylos canescens subsp. canescens Doris K. Kildale 1926-8-15 2542 Humboldt Hoopa Mountain 792 Comment
  BLMAR245  Arctostaphylos columbiana Jennifer Anthony-Wheeler 1997-7-24 245 Humboldt Lacks Creek, growing along rdside & throughout regenerating 1219 Comment
  BLMAR648  Arctostaphylos columbiana Jennifer Wheeler 2011-5-27 648 Humboldt Lacks Creek, Pine Ridge Road, spur at Stormy Saddle 1097 Comment
  CAS-BOT-BC23743  Arctostaphylos columbiana C. Hart Merriam 1920-8-31 s.n. Humboldt Coast Mts. between Shelter Cove and Kenny Comment
  CAS-BOT-BC23758  Arctostaphylos columbiana Alice Eastwood 1907-4-22 98 a Humboldt Adams Station, across river. Comment
  CAS-BOT-BC23798  Arctostaphylos columbiana H. E. Parks 1931-3-25 0917 Humboldt Near Patrick's point Comment
  JEPS38944  Arctostaphylos columbiana Joseph P. Tracy 1932-2-28 9772 Humboldt around Humboldt Bay; Northern Coast Region, Table Bluff 60 Comment
  RSA622684  Arctostaphylos columbiana Jon E. Keeley 1996-10-13 27762 Humboldt Bald Hills Road, eastern end of Redwood National Park, 25 km west of Highway 96, north of Eureka. 700 Comment
  SBBG58415  Arctostaphylos columbiana H. E. Parks 1931-3-25 917 Humboldt near Patrick's Pt Comment
  UC1198651  Arctostaphylos columbiana Joseph P. Tracy 1936-2-22 13137 Humboldt vicinity of Trinidad Northern Coast Region 60 Comment
  UC585919  Arctostaphylos columbiana Joseph P. Tracy 1936-8-2 15074 Humboldt French Camp Ridge 1066 Comment
  CAS-BOT-BC23735  Arctostaphylos columbiana C. Hart Merriam 1921-7-7 s.n. Humboldt Ridges west of the Van Duzen River. Comment
  RSA254754  Arctostaphylos columbiana var. columbiana Thomas W. Nelson 1975-3-20 1750 Humboldt Along Kneeland Rd. just south of its junction with Maple Creek Rd. Losey property. 671 Comment
  HSC7629  Arctostaphylos glandulosa Unknown Humboldt 1 mi. W of Queens Rd. 610 Comment
  HSC101669  Arctostaphylos glandulosa subsp. glandulosa J. P. Smith, J. O. Sawyer 2011-4-23 13130 Humboldt Kings Peak Road, 3.2 miles from its junction with Shelter Cove Rd Comment
  HSC102137  Arctostaphylos glandulosa subsp. glandulosa M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 1041 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  RSA632807  Arctostaphylos knightii Jon E. Keeley 1996-10-13 27790 Humboldt Bald Hills Road, eastern end of Redwood National Park, 20-23 km west of Highway 96, north of Eureka. 600 Comment
  BLMAR54  Arctostaphylos manzanita Jennifer Anthony-Wheeler 1994-2-14 54 Humboldt King range, growing along KR rd approx 2mi from rd end 228 Comment
  UCD52079  Arctostaphylos manzanita Harold E. Parks; Joseph P. Tracy 1936-5-16 11304 Humboldt Near Gasquet; mountain slopes; north side of Middle Fork of Smith River; on old Gasquet Toll Road. 609 Comment
  CAS-BOT-BC24374  Arctostaphylos manzanita subsp. manzanita Doris K. Kildale 1926-9-5 2614 Humboldt Lasseck's Peaks - near trail to Red Peak. 1661 Comment
  RSA152312  Arctostaphylos manzanita subsp. manzanita Joseph P. Tracy 1942-9-6 17306 Humboldt Dinsmore's along Van Duzen River, opposite Buck Mountains. 762 Comment
  UC1225895  Arctostaphylos manzanita subsp. manzanita Joseph P. Tracy 1942-7-18 17285 Humboldt Garberville 152 Comment
  UC585968  Arctostaphylos manzanita subsp. manzanita Joseph P. Tracy 1934-7-1 13275 Humboldt Willow Creek Trinity River Valley 152 Comment
  HSC55148  Arctostaphylos nevadensis G. L. Clifton, Griswold 1979-8-1 12071 Humboldt Near N Trinity Mtn., close to the town of Hoopa. 1798 Comment
  UCD52684  Arctostaphylos nevadensis Joseph P. Tracy 1939-8-16 16405 Humboldt Horse Mountain. 1432 Comment
  CAS-BOT-BC40027  Arctostaphylos nevadensis subsp. knightii Joseph P. Tracy 1935-6-23 13992 Humboldt French Camp Ridge 1066 Comment
  CAS-BOT-BC40062  Arctostaphylos nevadensis subsp. knightii Joseph P. Tracy 1935-6-23 13991 Humboldt French Camp Ridge 1066 Comment
  HSC99394  Arctostaphylos nevadensis subsp. nevadensis K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-6-28 43 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  HSC98995  Arctostaphylos patula Cara Witte 2008-7-10 865 Humboldt Forest Service Road 4N06A. Cow Creek Ridge. 1 mile east of National Forest 1. Under powerlines. 1254 Comment
  HSC100469  Arctostaphylos pungens Carl C. Marshall Apr 1886 383 Humboldt Hoopa Valley. Comment
  UC1225933  Arctostaphylos uva-ursi Joseph P. Tracy 1945-3-30 17502 Humboldt Eureka 45 Comment
  SEINET11984848  Arctostaphylos uva-ursi Unknown 1965-1 555 Humboldt 1.3 mi S of Samoa, Samoa Peninsula Comment
  CDA6804  Arctotheca calendula J. M. DiTomaso 2000-8-14 s.n. Humboldt W of town of Ferndale, E of Centerville Beach, along Centerville Rd, at Pries Dairy, near Russ Creek Comment
  HSC94121  Arctotheca calendula Gordon Leppig 2000-4-9 1288 Humboldt Union St. at 7th St. South of Phillips House 24 Comment
  UC668126  Arenaria congesta var. suffrutescens Joseph P. Tracy 1932-7-12 10478 c Humboldt Head of Brett Hole Trinity Summit, Brett Hole 1828 Comment
  POM232100  Armeria maritima subsp. californica I. L. Wiggins 1930-7-11 4683 Humboldt Near Samoa Comment
  RSA245204  Armeria maritima subsp. californica Jerry Parker 1968-10-14 29 .1 Humboldt Mckinleyville Beach. Comment
  HSC33417  Arnica cernua Thomas W. Nelson 1974-5-30 1345 Humboldt Along Hoopa-Redwood Valley Rd. Comment
  HSC45266  Arnica cernua M. Alcasas 1978-6-3 113 Humboldt Horse Mtn. summit 1513 Comment
  HSC64195  Arnica discoidea J. O. Sawyer, M. A. Erickson 1979-6-23 3373 Humboldt Slopes below Mill Creek Lakes 1585 Comment
  HSC73701  Arnica discoidea M. A. Baker 1980-7-23 3142 Humboldt Near Orleans Mtn. 1859 Comment
  HSC48988  Arnica discoidea M. A. Baker 1979-5-25 763 Humboldt Comment
  HSC49998  Arnica discoidea M. A. Baker 1979-6-7 790 Humboldt W slope of Snow Mtn. 762 Comment
  CAS-BOT-BC82647  Arnica latifolia Joseph P. Tracy 1932-7-20 10736 Humboldt Trinity Summit, Fir Woods near Corral Prairie 1524 Comment
  SEINET11837491  Arnica tomentella J. P. Tracey 1950-1 19273 Humboldt 2 mi E of town, on trail to Croghan Hole. Trinity Summit, near Box Camp 1524 Comment
  HSC8991  Arrhenatherum elatius D. J. McVean 1965-5-18 77 Humboldt Old Arcata Rd., S of intersection with Indianola Rd. Comment
  UC922020  Arrhenatherum elatius Joseph P. Tracy 1950-6-15 18781 Humboldt 5 mi n of Harris (near top of Mail Ridge); Mail Ridge 1066 Comment
  SEINET10473422  Artemisia Mary Susan Taylor 1990-8-22 Taylor 6078 Humboldt Samoa Recreation Area on Samoa Peninsula, Staging Area, Eureka. Coastal scrub in ORV area. Comment
  UCD129380  Artemisia douglasiana James Payne Smith Jr.; Advanced Plant Taxonomy Class 1971-10-9 5032 Humboldt Mad River above the Fish Hatchery. Comment
  HSC38544  Artemisia douglasiana R. Sutherland 1976-8-13 24 .13876 Humboldt Mouth of Redwood Creek at South Fork of Eel River 27 Comment
  UC1222997  Artemisia douglasiana Joseph P. Tracy 1948-9-6 18158 Humboldt at Willow Creek (Tracy's place); Trinity River Valley 152 Comment
  CAS-BOT-BC90869  Artemisia pycnocephala J. P. Tracy 1909-7-18 3023 Humboldt Sand hills of ocean beach at Samoa, opp. Eureka Comment
  HSC12354  Artemisia pycnocephala Steve Dorei 1970-10-7 146 Humboldt McKinleyville Comment
  SEINET8734625 Image available Artemisia pycnocephala H. E. Parks, S. T. Parks 1952-1 24495 Humboldt Samoa Comment
  POM264601  Artemisia suksdorfii H. E. Parks 1940-05 24178 Humboldt Little River Comment
  BLMAR405  Aruncus dioicus Clara Sander July, 2004 405 Humboldt Horse Mtn, Road side edge of Titlow Hill Road 1066 Comment
  CAS-BOT-BC400537  Asarum caudatum Alice Eastwood 1907-4-21 4 Humboldt Trinidad 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
  HSC58015  Asarum caudatum G. L. Clifton 1979-7-31 11818 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  UC6169  Asarum caudatum Harley P. Chandler May 1901 1267 Humboldt Redwood Belt 457 Comment
  UCR179286  Asarum caudatum R. G. Swinney 1968-3-28 232 Humboldt East of Humboldt State College, Arcata 152 Comment
  SEINET10857354  Asclepias fascicularis R. W. Schery, E. M. Curtis 1939-7-20 Schery 8 Humboldt West of Sequaia 914 Comment
  UC440176  Aspidotis densa Joseph P. Tracy 1919-9-25 5301 Humboldt Trinity Summit; Northern Coast Ranges 182 Comment
  UC1174495  Astragalus rattanii var. rattanii Volney Rattan June 1882 Humboldt Comment
  UC1222421  Astragalus rattanii var. rattanii Joseph P. Tracy 1948-6-13 18040 Humboldt 7 mi nw Blocksburg (half way between Bridgeville and Blocksburg, along Larrabee Creek); Larrabee Creek, halfway betw Bridgeville and Blocksburg Comment
  JEPS109394  Astragalus umbraticus Dean W. Taylor 2009-7-14 20674 Humboldt vicinity Lake Prairie, reached via Guy Kerr Ranch Road off Snow Camp Road 1133 Comment
  RSA138295  Astragalus umbraticus Volney Rattan 1878-1 1878 Humboldt Humboldt. Comment
  SEINET13761872  Astragalus umbraticus C. Wilson, M. Groberg, B. Meinke 2011-1 s.n. Humboldt On Green Diamond Resource Company private land; Roadside edge on W slope of French Camp Ridge. 853 Comment
  RSA246930  Athyrium filix-femina subsp. cyclosorum R. F. Thorne, Percy C. Everett 1965-8-9 35292 Humboldt Big Lagoon 3 Comment
  JEPS70200  Athyrium filix-femina var. cyclosorum Robert J. Rodin 1969-8-18 8384 Humboldt along Redwood Creek near Orick Comment
  UC503067  Athyrium filix-femina var. cyclosorum H. E. Parks and Joseph P. Tracy 1930-9-13 9180 Humboldt Jacoby Creek; Northern Coast Ranges 121 Comment
  UC162643  Athysanus pusillus Joseph Burtt Davy and Walter C. Blasdale 1899-6-8 5350 Humboldt near Harris; North-Western California Comment
  HSC4343  Atriplex leucophylla D. E. Anderson 1961-9-13 1809 Humboldt Big Lagoon County Park Comment
  HSC97550  Atriplex prostrata Ivy Watson 2008-10-11 56 Humboldt Mad river, near river mouth, S bank 6 Comment
  UC181262  Avena barbata Joseph P. Tracy 1913-6-13 4114 Humboldt opposite Buck Mountain; Northern Coast Ranges, valley of Van Duzen River, Dinsmore's 762 Comment
  CAS-BOT-BC66223  Azolla filiculoides Malcom A. Nobs; S. Galen Smith 1949-8-9 1246 Humboldt Clam Beach Comment
  UC1239784  Azolla filiculoides Joseph P. Tracy 1911-6-25 3245 Humboldt pool back of Holmes Mill Bucksport; Northern Coast Region 0 Comment
  UC275449  Azolla filiculoides Parks and Tracy 1925-6-24 2763 Humboldt ditches along R.R. and tide flats Eureka Comment
  CAS-BOT-BC98768  Baccharis douglasii L. R. Abrams 1916-7-18 6111 Humboldt Arcata to Trinidad, 18 mi. along the coast Comment
  JEPS21315  Baccharis glutinosa W. L. Jepson 1932-7-24 16391 Humboldt Garberville, Tooey Ranch Garberville Comment
  CDA10372  Baccharis glutinosa E. C. Whitney 1964-8-13 Humboldt Adams property, Stafford. 0 Comment
  RSA245262  Barbarea verna Thomas W. Nelson 1973-4-25 798 Humboldt Beside Hwy 101 at Bayside turnoll. Comment
  RSA10095  Beckmannia syzigachne Joseph P. Tracy 1928-6-24 8472 Humboldt Valley of south Yager Creek Comment
  HSC104290  Bellardia trixago Samantha E. Andres 2016-6-1 9 Humboldt Samoa Peninsula, North Jetty, along the roadside 4 Comment
  JEPS8437  Bensoniella oregona Rimo Bacigalupi with J. P. Tracy, L. Constance, R. Moran, R. L. Rodriguez, and S. Carlquist 1951-6-14 3410 Humboldt long high ridge between Mad River and Redwood Creek (Bald Mountain ridge) High Prairie; btw Mad River and Redwood Crk (Bald Mountain ridge), High Pr 1066 Comment
  HSC3343  Berberis aquifolium D. E. Anderson 1964-4-24 3544 Humboldt .5 mi. from Hwy. 299, along Titlow Hill Rd. Comment
  HSC41476  Berberis aquifolium Richard Runyon 1977-4-23 10 Humboldt 2.5 mi. S of Shelter Cove Road, S fork of Bear Creek at Wailaki Campground 561 Comment
  HSC65099  Berberis aquifolium var. aquifolium J. P. Smith, J. O. Sawyer 1973-5-12 6687 Humboldt 6.1 mi. from Redwood Creek on Hoopa Rd. Comment
  CAS-BOT-BC75682  Berberis nervosa C. B. Wolf 1931-8-29 2372 Humboldt Near summit of Orick Hill on the road to Weitchpec. 304 Comment
  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-BC412988  Bistorta bistortoides Volney Rattan 1882-6-1 s.n. Humboldt Unspecified Comment
  CAS-BOT-BC66268  Blechnum spicant L. B. Kildale 1931-8-23 s.n. Humboldt Snow Camp 1219 Comment
  HSC985  Blechnum spicant W. R. Brigham 1962-4-7 1 Humboldt S of Big Lagoon Comment
  JEPS53081  Boechera retrofracta H. P. Chandler Jun 1901 1511 Humboldt Klamath River Comment
  UC562689  Boechera sparsiflora Joseph P. Tracy 1935-7-31 14391 Humboldt ridge connecting Trinity Summit with Salmon Summit; Devils Backbone 1676 Comment
  CAS-BOT-BC31368  Bolboschoenus maritimus Robert F. Thorne; P. Everett 1965-8-7 35213 Humboldt Samoa Peninsula 0 Comment
  HSC24555  Boschniakia hookeri Rudolf W. Becking 1972-6-30 720608 Humboldt Fish Lake area, Orleans 762 Comment
  HSC55611  Boykinia major Overton, Butler 1979-7-23 9495 Humboldt Near Titlow Hill, close to the town of Willow Creek. 1280 Comment
  HSC23140  Boykinia occidentalis Norman Dennis 1965-6-3 145 Humboldt Big Lagoon County Park, SW corner of Big Lagoon Comment
  UC154086  Boykinia occidentalis J. P. Tracy 1901-6-30 1210 Humboldt immediate vicinity Eureka; immediate vicinity of Eureka 0 Comment
  CAS-BOT-BC420267  Boykinia occidentalis L. R. Abrams 1922-6-25 8265 Humboldt between Trinidad & Big Lagoon Comment
  HSC39223  Boykinia occidentalis D. E. Anderson, J. P. Smith 1971-7-6 - 1320 Humboldt Rock wall near bridge over Supply Creek Comment
  JEPS49660  Boykinia occidentalis Milo S. Baker 1923-7-19 84 b Humboldt Canyon near Carlotta (North Coast Trip); Canyon near Carlotta, North Coast Trip Comment
  RSA12452  Boykinia occidentalis Carl B. Wolf 1934-6-30 5841 Humboldt 4 miles from Shelter Cove on rd to Briceland. 152 Comment
  RSA246665  Boykinia occidentalis R. F. Thorne, P. Everett 1965-8-7 35186 Humboldt Big Lagoon. In bog at S end of lagoon. 2 Comment
  UC1173667  Brickellia greenei Joseph P. Tracy 1939-8-16 16401 Humboldt Horse Mountain 1432 Comment
  CAS-BOT-BC145429  Briza maxima Joseph P. Tracy 1930-7-6 8848 Humboldt Iaqua. 762 Comment
  UCD57277  Briza maxima P. B. Kennedy 1929-6-13 s.n. Humboldt Etterburg. Comment
  HSC12346  Briza minor Steve Dorei 1970-10-31 137 Humboldt Scotia Bluffs, N of railroad tracks Comment
  HSC78974  Briza minor L. P. Janeway, Paul Wilson 1984-5-25 827 Humboldt N Spit of Humboldt Bay, BLM lands near the Coast Guard Station 5 Comment
  HSC84929  Briza minor R. N. Raynor 1935-6-7 Humboldt Ft. Seward Comment
  HSC103995  Briza minor M. F. Norman 2015-4-11 22 Humboldt Arcata, Ma-le'l Dunes Comment
  CAS-BOT-BC484215  Brodiaea elegans subsp. elegans Milo S. Baker 1923-7-20 77 Humboldt Near Carlotta; North Coast Trip Comment
  HSC36784  Brodiaea elegans subsp. elegans Thomas W. Nelson, Jane P. Nelson, James Nelson 1975-7-20 2038 Humboldt At summit just W of Larabee Valley Comment
  UC1197746  Brodiaea elegans subsp. elegans J. P. Tracy 1906-7-4 2529 Humboldt near Hydesville (gravel bars on creek); Yager Creek 91 Comment
  SEINET12053853  Brodiaea stellaris J. P. Tracy 1950-1 18903 Humboldt McClellen Mt., just E of McClellen Rock, Burr Valley 762 Comment
  UC1145185  Bromus carinatus var. carinatus Joseph P. Tracy 1936-6-17 149246 Humboldt Buck Mountain 792 Comment
  HSC102641  Bromus carinatus var. marginatus M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-29 1625 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1579 Comment
  UCD59147  Bromus carinatus var. marginatus A. H. Shunk 1923-7-21 s.n. Humboldt Bridgeville. 328 Customs House. Comment
  RSA10039  Bromus commutatus Joseph P. Tracy 1933-6-9 12534 Humboldt Shively. On Eel River. 30 Comment
  UC188939  Bromus commutatus J. Burtt Davy 1899-6-16 5555 Humboldt North Coast Ranges, Scotia Scotia; North Coast Ranges, Scotia Comment
  HSC45110  Bromus diandrus R. Sutherland 1978-5-13 4 .13578 Humboldt Mattole River. 282 Comment
  HSC79491  Bromus diandrus Kenneth Clark 1980-4-18 575 Humboldt 350 yds. S of Deadman's Gulch 8 Comment
  HSC9274  Bromus diandrus P. W. Shields 1956-4-21 Humboldt 5 mi. SE Arcata. Comment
  HSC9300  Bromus diandrus E. W. Styskel 1964-4-28 75 Humboldt End of Davis St. at the edge of Eel River in Rio Dell Comment
  CAS-BOT-BC155424  Bromus hordeaceus Henry M. Pollard 1948-7-18 s.n. Humboldt Orleans. Comment
  HSC79464  Bromus hordeaceus Kenneth Clark 1980-4-18 610 Humboldt Along access trail to Dead Man's Gulch, above gulch. 137 Comment
  HSC9253  Bromus hordeaceus R. J. Vernimen 1963-4-27 42 Humboldt 0.5 mi. off Samoa Rd., behind the Georgia-Pacific dump, 7.5 mi. SW of Arcata, along logging road Comment
  HSC9205  Bromus laevipes True Hoyle 1967-7-24 29467 Humboldt Oscar Stapp Ranch near Showers Creek and Showers Pass 1006 Comment
  UC37642  Bromus laevipes Joseph Burtt Davy 1899-6-27 5871 Humboldt Hupa Valley Comment
  UC188942  Bromus secalinus J. Burtt Davy 1899-6-20 5688 B Humboldt North Coast Ranges, Hoopa Valley Hoopa Valley; North Coast Ranges, Hoopa Valley Comment
  UC180480  Bromus vulgaris Joseph P. Tracy 1914-5-14 4444 Humboldt Northern Coast Ranges, Fort Seward Fort Seward; Northern Coast Ranges, Fort Seward 121 Comment
  UC526735  Bromus vulgaris Joseph P. Tracy 1926-5-2 7427 Humboldt Trinity River Valley near the South Fork; Northern Coast Ranges, Trinity River Valley 182 Comment
  UC725498  Bromus vulgaris A. A. Heller 1923-7-10 13789 Humboldt Humboldt Camp between Scotia and Pepperwood; Humboldt Camp Comment
  HSC44136  Cacaliopsis nardosmia Thomas W. Nelson, Jane P. Nelson 1977-7-1 3570 Humboldt Along N side of ridge between Bear and Blanket Creeks 1494 Comment
  HSC64071  Cakile maritima J. P. Smith 1971-10-6 4956 Humboldt End of Murray Rd. in McKinleyville. Comment
  UC673072  Cakile maritima Joseph P. Tracy 1940-9-21 16724 A Humboldt near Samoa (on Humboldt Bay); Humboldt Bay 3 Comment
  UCR121764  Cakile maritima George K. Helmkamp, E. A. Helmkamp 2001-7-8 7025 Humboldt North Coast, Samoa Peninsula, 2.6 miles south of CA Hwy 255 bridge across Humboldt Bay 15 Comment
  CAS-BOT-BC185315  Calamagrostis foliosa Roxana S. Ferris 1937-8-21 9391 A Humboldt Shelter Cove. Comment
  HSC97775  Calamagrostis foliosa C. Gillevan, C. Sander 2003-8-13 330 Humboldt Cliffs above Randal Creek, Cooksie Creek, and Gitchel Creek, in the King Range Area 9 Comment
  HSC58672  Calamagrostis koelerioides Gilbert Muth 1979-8-1 12149 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1677 Comment
  UC1145050  Calamagrostis koelerioides Joseph P. Tracy 1936-7-26 15050 Humboldt Willow Creek Canyon; along Trinity Hwy 457 Comment
  UC552721  Calamagrostis koelerioides Joseph P. Tracy 1935-7-30 14371 Humboldt Salmon Summit 2011 Comment
  CHSC106732  Callitriche heterophylla var. bolanderi Robert F. Thorne; P. Everett 1965-8-9 35323 Humboldt Clam Beach County Park: along highway in shallow water of ditch. 3 Comment
  UC1103691  Callitriche heterophylla var. bolanderi Joseph P. Tracy 1913-5-11 4073 Humboldt Eureka Northern Coast Region (at Stephen Hill place) 0 Comment
  HSC13057  Callitropsis nootkatensis C. Kline, D. Santana Oct 1970 8 Humboldt HSC Campus Comment
  HSC58144  Calocedrus decurrens Gilbert Muth 1979-8-1 12179 Humboldt Near Red Cap Prairie, close to the town of Hoopa 1781 Comment
  UC502900  Calocedrus decurrens Joseph P. Tracy 1932-7-13 10499 Humboldt open ground at Corral Prairie; Klamath Mountains, Trinity Summit 1524 Comment
  SBBG115082  Calochortus amabilis D. Leaberry 1991-6-13 Humboldt Hwy 254 (Avenue of the Giants), ca. 1 mi S of Phillipsville Comment
  SEINET4169781  Calochortus catalinae Unknown 1935-7-14 Humboldt Clear Lake 1524 Comment
  UC1197689  Calochortus luteus Joseph P. Tracy 1912-7-31 3891 Humboldt nw slope Buck Mountain; Northern Coast Ranges, , Burr Valley 1066 Comment
  HSC15342  Calochortus tolmiei Elrid H. Spinas 1948-6-16 58 Humboldt Horse Mtn. Comment
  UC1103463  Calochortus tolmiei Joseph P. Tracy 1935-7-14 14074 Humboldt near Clear Lake; Grouse Mountain 1524 Comment
  UC1197677  Calochortus tolmiei Joseph P. Tracy 1922-4-30 5997 Humboldt near Willow Creek; Northern Coast Ranges, Trinity River Valley 152 Comment
  CAS-BOT-BC494366  Calochortus tolmiei H. C. Cantelow 1941-4-19 36 Humboldt 2 1/2 mi. n. e. of Cape Town. Open hillside above ocean on rd. to Ferndale from Patrolia. Comment
  HSC55997  Caltha leptosepala Overton, Butler 1979-7-31 11439 Humboldt Near Water Dog Lakes, close to the town of Hoopa 1830 Comment
  CAS-BOT-BC273319  Calycadenia fremontii H. M. Hall 1930-10-1 12922 Humboldt Trinity River at Willow Creek Comment
  HSC100365  Calycadenia truncata J. McRae 2007-9-13 Humboldt Sims Mtn., Panther dozer line. 732 Comment
  HSC89627  Calypso bulbosa Reid Storre, Brian Marston, William Kristan 1988-4-2 29 Humboldt Hilltop Ranch Comment
  SEINET3889828  Calypso bulbosa Rick Lundquist 1979-1 Humboldt Comment
  UC1196474  Calypso bulbosa Joseph P. Tracy 1927-5-15 8062 Humboldt on road to Bair's from Hoopa (at head of Pine Creek, near summit of Hoopa Mountain); Hoopa Mountain, Pine Creek 1066 Comment
  RSA304262  Calypso bulbosa var. occidentalis James R. Shevock 1972-3-27 1481 Humboldt Redwood State Park Comment
  HSC97465  Calyptridium monospermum Cara Witte 2007-5-29 122 Humboldt Along National Forest 1. Approximately 4 miles south of intersection National Forest 1 and 5N04. 1441 Comment
  SEINET200998  Calystegia J. P Tracy 1917-5-30 4803 Humboldt Near Little River Comment
  HSC6364  Calystegia soldanella J. W. Johnson 1961-8-17 1021 Humboldt W.M. Lanphere Farm, Samoa Peninsula Comment
  UC1197878  Calystegia soldanella Joseph P. Tracy 1920-8-29 5397 Humboldt mouth Little River (sand dunes); Northern Coast Ranges, mouth Little River 6 Comment
  UC584209  Calystegia soldanella David D. Keck and J. Clausen 1935-6-16 3384 Humboldt mouth of Little River Comment
  UCD126159  Calystegia soldanella Linda M. Barker 1976-6-1 1559 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  CHSC445  Calystegia soldanella M. Underhill 1952-7-13 Humboldt 0 Comment
  HSC18855  Calystegia soldanella P. F. Yull 1966-5-5 144 Humboldt 1 mi. S of Fairhaven Comment
  UCSB15924  Calystegia soldanella Breedlove, Dennis 1962-6-8 Humboldt Near coast on U.S. Highway 101, 3 miles south of Orick Comment
  UC1173652  Camassia quamash subsp. quamash Joseph P. Tracy 1937-8-12 15637 Humboldt Snow Camp 1402 Comment
  CDA39271  Camassia quamash subsp. quamash Gordon Leppig 1998-6-1 874 Humboldt Horse Mountain. Buck Flat, Titlow Hill Road at Ammon Ridge Road. Comment
  HSC26875  Camissonia cheiranthifolia Clifton Raymond Chesbrough 1973-6-19 79 Humboldt 1/4 mi. W of the Samoa entrance to Samoa Bridge Comment
  SD38658  Camissoniopsis cheiranthifolia subsp. cheiranthifolia Edith A. Purer 1932-7-27 4153 Humboldt Comment
  UC35372  Camissoniopsis cheiranthifolia subsp. cheiranthifolia W. C. Blasdale 1896-6-3 Humboldt W. Eureka 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
  SEINET10462990  Campanula prenanthoides Tracy 1934-8-24 TRACY 13591 Humboldt Trinity Highway, on ridge east of North Fork of Mad River 610 Comment
  SEINET10463114  Campanula prenanthoides Willis L. Jepson 1932-7-26 Jepson 16413 Humboldt BULL CREEK Comment
  SEINET10905897  Campanula prenanthoides Rattan 1878-1 RATTAN s.n. Humboldt Humboldt County Comment
  SEINET10463418  Campanula scouleri Griswold 1979-7-11 GRISWOLD 6946 Humboldt NR SNOW CAMP MTN, IAQUA BUTTES QUAD. NR WILLOW CR. EVERGREEN CONIFER FOREST, MEADOW, 4331 Comment
  UC1736612  Campanula scouleri Dean W. Taylor 1991-8-15 12279 Humboldt Snow Camp Lake 1310 Comment
Read comments
Apr 8 2012
  SEINET10463752  Campanula scouleri Rattan 1883-6-29 RATTAN s.n. Humboldt Near Redwood Creek Comment
  HSC36515  Cardamine californica J. D. Ackerman, A. M. Montalvo 1973-4-29 50 Humboldt 3 mi. E of Kneeland on road to Maple Creek 457 Comment
  HSC36518  Cardamine californica J. D. Ackerman, A. M. Montalvo 1973-5-6 61 Humboldt 5 mi. from Weott on Bull Creek Flat Rd. 274 Comment
  HSC8597  Cardamine californica D. K. Smith 1968-3-3 12 Humboldt On West End Rd., ca. 3 mi. from Hwy. 299 Comment
  HSC99003  Cardamine californica var. californica Cara Witte 2008-6-18 744 Humboldt Horse Mountain Botanical Area. 3/4 mile west of intersection 6N36, 6N36A. 1375 Comment
  HSC64134  Cardamine oligosperma J. P. Smith, J. O. Sawyer 1973-5-12 6692 Humboldt 6.1 mi. from Redwood Creek on Hoopa Rd. Comment
  HSC5226  Carduus tenuiflorus D. E. Anderson 1963-5-25 2487 Humboldt 1 mi. N of Capetown Comment
  CAS-BOT-BC19218  Carex barbarae Henry M. Pollard 1944-9-1 s.n. Humboldt Near Orleans. Comment
  CHSC93260  Carex bolanderi Thomas Nelson; Jane Nelson 1977-7-1 3559 Humboldt The Lassics. Along Blanket Creek. 1493 Comment
  HSC75765  Carex bolanderi Teresa Prendusi 1981-7-24 494 Humboldt Near Whiteys Peak 1585 Comment
  CAS-BOT-BC19438  Carex bolanderi Doris K. Kildale 1927-7-23 3800 Humboldt Hoaglin Lake near Lassicks Peak [Lassics Lookout?]. Comment
  JEPS25965  Carex concinnoides Joseph P. Tracy 1927-6-19 8190 Humboldt Patrick's Point Northern Coast Ranges, Patrick's Point 60 Comment
  HSC95435  Carex cusickii Gordon Leppig 2001-6-16 1569 Humboldt Big Lagoon County Park; Big Lagoon Bog 3 Comment
  RSA364727  Carex densa Thomas W. Nelson, Ken Hindley 1978-5-28 4086 Humboldt On McKeown Ranch north of Dinsmore. 762 Comment
  UC562262  Carex densa Joseph P. Tracy 1927-5-30 8095 Humboldt vicinity of Garberville 121 Comment
  CAS-BOT-BC34980  Carex densa Joseph Prince Tracy 1927-5-30 8095 Humboldt Northern Coast Ranges.Garberville. 121 Comment
  UC1103110  Carex deweyana subsp. leptopoda Joseph P. Tracy 1932-7-17 10677 Humboldt Trinity Summit, ridges E of Corral Prairie 1828 Comment
  UC562271  Carex echinata subsp. echinata Joseph P. Tracy 1932-7-14 10567 Humboldt Corral Prairie Trinity Summit, Corral Prairie 1584 Comment
  CHSC97053  Carex echinata subsp. phyllomanica Gordon Leppig 1998-6-8 798 Humboldt Big Lagoon County Park. Big Lagoon Bog. Common in northern section. NAD27 UTM Zone 10, 405321E 4557202N. 3 Comment
  CAS-BOT-BC19968  Carex exsiccata Milo S. Baker 1927-8-21 24706 Humboldt Near Bald Mountain. 914 Comment
  UC196567  Carex feta Joseph P. Tracy 1916-6-20 4734 Humboldt at the Dyke Ranch Northern Coast Ranges, Alder Point 304 Comment
  HSC48040  Carex fracta D. H. Norris 1972-6-26 23033 Humboldt Along Grouse Mtn. Rd., 5 mi. from intersection with Horse Mtn. Rd. Comment
  CAS-BOT-BC20870  Carex globosa Joseph Prince Tracy 1932-4-23 9832 Humboldt North Coast Ranges. Englewood. 91 Comment
  UC197207  Carex gynodynama Joseph P. Tracy 1908-6-7 2620 Humboldt Northern Coast Ranges, Butler Valley. Comment
  CAS-BOT-BC22314  Carex harfordii Joseph Prince Tracy 1938-6-15 15934 Humboldt Vicinity of Carlotta. 30 Comment
  CAS-BOT-BC21019  Carex hendersonii Joseph Prince Tracy 1926-6-13 7598 Humboldt Blue Lake. 152 Comment
  HSC76381  Carex hendersonii L. P. Janeway 1982-6-17 9 Humboldt Ca 300 m W of main Arcata Community Forest Road along the road to the HSU water tank. 137 Comment
  UC1103593  Carex hendersonii Joseph P. Tracy 1937-6-20 15348 Humboldt 10 mi upstream mouth of Bear River; Bear River 152 Comment
  UC562728  Carex hendersonii Joseph P. Tracy 1927-5-30 8080 Humboldt near Myers; North Coast Ranges, South Fork of Eel River 91 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
  UC562662  Carex integra Joseph P. Tracy 1932-7-15 10589 Humboldt ridges e Corral Prairie; Trinity Summit 1828 Comment
  CAS-BOT-BC35563  Carex jonesii Joseph Prince Tracy 1935-7-26 14257 Humboldt Trinity Summit, Meadows at Water Dog Lakes 1828 Comment
  CHSC90280  Carex jonesii Thomas W. Nelson; Jane P. Nelson 1987-6-11 8601 Humboldt North Coast Ranges. Box Spring at Box Camp. Along trail to North Trinity Mountain. 1524 Comment
  HSC103361  Carex jonesii Thomas W. Nelson, Jane Nelson 1987-6-11 8597 Humboldt At trailhead and along trail to Grogans Hole 610 Comment
  CHSC107129  Carex laeviculmis R. E. Brainerd 2009-7-23 1567 Humboldt North Coast Range, South Fork Mountain; 19.6 miles west-northwest of Hayfork. UTM Zone 10 453477E 4494945N. 1661 Comment
  HSC98934  Carex laeviculmis Cara Witte 2007-7-11 480 Humboldt Cold Spring. 1/2 mile south of Titlow Hill. 1391 Comment
  SEINET2430055  Carex laeviculmis Joseph P. Tracy 1929-7-4 8607 Humboldt French Camp Ridge 1070 Comment
  UC562283  Carex laeviculmis Joseph P. Tracy 1929-7-4 8607 Humboldt French Camp Ranch Northern Coast Ranges 1066 Comment
  RSA88710  Carex lenticularis var. limnophila F. W. Peirson 1926-7-13 7046 Humboldt Along shore of first lagoon south of Orick. Comment
  HSC76778  Carex leptopoda L. P. Janeway 1983-5-15 296 Humboldt Bend of Mad River on S side, near the Fish Hatchery Rd. and across from Blue Lake 24 Comment
  HSC102233  Carex luzulina M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-3 1155 Humboldt Patterson Meadows 1555 Comment
  HSC71214  Carex lyngbyei Thomas W. Nelson, Doris K. Niles 1979-5-19 4695 Humboldt Tidal marsh at mouth of Eel River, Crab Park, N of County Park. Comment
  HSC102151  Carex multicostata M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-3 1058 Humboldt Patterson Meadows 1555 Comment
  UC1103086  Carex multicostata Joseph P. Tracy 1930-7-23 9127 Humboldt Cold Springs Northern Coast Ranges, Horse Mountain 1432 Comment
  POM126515  Carex nudata Joseph P. Tracy 1922-5-29 6069 Humboldt South Yager Creek Valley. 762 Comment
  CAS-BOT-BC119308  Carex obnupta Robert F. Thorne; P. Everett 1965-8-7 35199 Humboldt Big Lagoon, at edge of bog at S end of lagoon. Comment
  CHSC2106  Carex obnupta M. Anthony 1937-5-15 Humboldt Humboldt State College. Comment
  HSC40257  Carex obnupta Linda M. Barker 1976-4-30 1421 Humboldt 3 mi. W of Arcata Comment
  UC1598395  Carex obnupta Joy Mastrogiuseppe, Tom Nelson 1986-7-22 4353 Humboldt Burr Creek Burr Valley Comment
  UC562323  Carex obnupta Joseph P. Tracy 1934-7-30 13503 Humboldt along coast in front of South End of Stone Lagoon; Dry Lagoon 3 Comment
  CDA33125  Carex obnupta T. C. Fuller 1961-9-28 7055 Humboldt 1.5 miles south of Samoa. 0 Comment
  CAS-BOT-BC119243  Carex pachystachya Joseph Prince Tracy 1939-7-9 16342 Humboldt Snow Camp 1402 Comment
  CAS-BOT-BC119244  Carex pachystachya Joseph Prince Tracy 1939-7-9 16342 Humboldt Snow Camp 1402 Comment
  HSC82544  Carex pachystachya Thomas W. Nelson 1979-7-11 5005 Humboldt N Trinity Mtn. and ridge to E. 1829 Comment
  HSC49246  Carex pansa Rudolf W. Becking 1979-3-25 Humboldt U.S. Coast Guard Station along N Spit Humboldt Bay, Fairhaven Comment
  HSC76847  Carex praticola L. P. Janeway 1982-6-20 15 Humboldt Near road underdrain, 30 m N on FS Rd. 6N36 from Titlow Hill Rd. 1384 Comment
  CAS-BOT-BC118824  Carex preslii Joseph Prince Tracy 1938-6-9 15878 Humboldt Dobbyn Creek 152 Comment
  CAS-BOT-BC118823  Carex preslii Joseph Prince Tracy 1932-6-19 10242 Humboldt Dinsmore's Ranch: on Van Duzen River opposite Buck Mountain. 762 Comment
  UC3030704  Carex serratodens Joseph P. Tracy July, 1908 2898 Humboldt near Low Gap (Dinsmore's Ranch, ridge between Van Duzen and Mad Rivers); Northern Coast Ranges 1066 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
  CAS-BOT-BC116675  Carex subfusca Henry M. Pollard 1948-8-4 21 -2 Humboldt Orleans Mt. 1371 Comment
  HSC48739  Carex subfusca Brad Klipfel 1973-6-10 64 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  CAS-BOT-BC116683  Carex subfusca Joseph Prince Tracy 1928-6-17 8450 Humboldt Trinity River Valley, at Willow Creek. 152 Comment
  JEPS75415  Carex tumulicola W. L. Jepson 1932-7-26 16415 Humboldt Bull Creek 106 Comment
  POM126148  Carex tumulicola Joseph P. Tracy 1923-5-13 6205 Humboldt Near Bridgeville. Comment
  SEINET4170216  Carex unilateralis Unknown 1921-6-12 5828 Humboldt Butler Valley 152 Comment
  UC1103604  Carex viridula var. viridula Joseph P. Tracy 1934-7-30 13505 Humboldt along coast in front of S. End of Stone Lagoon; Dry Lagoon 3 Comment
  HSC98629  Castilleja affinis subsp. affinis Cara Witte 2007-6-4 184 Humboldt Cold Spring. 0.5 mile S of Titlow Hill. 1386 Comment
  HSC98630  Castilleja affinis subsp. affinis Cara Witte 2007-8-1 614 Humboldt Friday Ridge Road (Forest Service Road 6N08); ~ 1/2 mile north of intersection with Forest Service Road 5N39. 1505 Comment
  UC1196741  Castilleja affinis subsp. affinis Joseph P. Tracy 1942-7-1 17366 Humboldt opposite Buck Mountain (Dinsmore's, along Van Duzen River); Van Duzen River 762 Comment
  JEPS21129  Castilleja affinis subsp. litoralis Myrtle Paulson 1918-4-28 Humboldt Eureka Comment
  JEPS35840  Castilleja affinis subsp. litoralis Rimo Bacigalupi, and L. R. Heckard 1964-8-2 8986 Humboldt about 2 mi w Orick (at n end of Freshwater Lagoon); Freshwater Lagoon Comment
  HSC90806  Castilleja ambigua subsp. humboldtiensis Gail Newton 1982-5-2 2508 Humboldt Elk River Wildlife Area, Eureka Comment
  HSC90966  Castilleja ambigua subsp. humboldtiensis Gail Newton 1982-6-5 3575 Humboldt Elk River Wildlife Area, Eureka. Comment
  OBI9388  Castilleja ambigua subsp. humboldtiensis Joseph P. Tracy 1938-7-15 16068 Humboldt Mouth of Eel River 3 Comment
  UC27149  Castilleja attenuata Harley P. Chandler May 1901 1141 Humboldt Humboldt Bay; North Coast Ranges 3 Comment
  HSC44427  Castilleja pruinosa Brad Klipfel 1975-5-30 645 Humboldt Horse Mtn. Comment
  JEPS13340  Castilleja rubicundula subsp. lithospermoides Parks and Tracy 1930-5-25 796 Humboldt Laribee Valley 792 Comment
  JEPS25092  Castilleja rubicundula subsp. lithospermoides Joseph P. Tracy 1938-6-17 15952 Humboldt Cape Mendocino 152 Comment
  SDSU19193  Ceanothus cordulatus Michael G. Simpson, Michael Mesler and Michael Mayer 2008-5-27 3012 Humboldt Six Rivers National Forest. From Hwy 299, take Titlow Hill Road (at Berry Summit) ca. 7.5 miles south, west 0.2 miles to Cold Spring. Ca. 0.3 mile south-southeast of Cold Spring. Ca. 3.3 aerial miles south-southeast of Horse Mtn. Radio Tower. 1426 Comment
  CAS-BOT-BC49316  Ceanothus cuneatus L. B. Kildale 1930-9-21 10229 Humboldt Bluff Creek trail to Fish Lake Comment
  HSC98788  Ceanothus cuneatus Cara Witte 2008-6-4 675 Humboldt Horse Mountain Botanical Area. Forest Service Road 6N38. Near Horse Mountain mine. 1307 Comment
  UCR32075  Ceanothus cuneatus David J. Keil 1983-7-2 17328 Humboldt Horse Mountain Summit SW of Willow Creek 1509 Comment
  JEPS82330  Ceanothus foliosus Roger Raiche 1983-7-18 30531 A Humboldt Horse Mt. King Range Comment
  UC275318  Ceanothus foliosus Joseph P. Tracy 1923-6-20 6322 Humboldt Chamisal Mountain, near Shelter Cove 304 Comment
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Aug 4 2016
  HSC37603  Ceanothus foliosus var. foliosus R. Sutherland 1975-5-13 15 .13575 Humboldt Brushy flat 509 Comment
  HSC37087  Ceanothus gloriosus var. exaltatus R. Sutherland 1976-4-19 5 .19476 Humboldt Chamise Mtn. just S of summit 777 Comment
  UC1502128  Ceanothus incanus R. Sutherland 1975-5-13 1 Humboldt Shelter Cove at King Range sign Garberville Quad. Comment
  UC1198012  Ceanothus integerrimus Joseph P. Tracy 1934-4-15 13182 Humboldt Willow Creek Trinity River Valley 152 Comment
  UC166023  Ceanothus integerrimus Joseph P. Tracy 1911-7-7 3427 Humboldt ridge to n Willow Creek (between Willow and Campbell Creek, near summit.); Brannan Mtn., Northern Coast Ranges 1219 Comment
  UC33626  Ceanothus integerrimus Chesnut and Drew 1888-7-25 Humboldt Comment
  RSA46465  Ceanothus integerrimus var. californicus Doris K. Kildale 1927-5-15 3301 Humboldt Petrolia Comment
  CDA36164  Ceanothus integerrimus var. macrothyrsus CDFA Staff 1977-6-21 Humboldt Willow Creek. 0 Comment
  CAS-BOT-BC51145  Ceanothus lemmonii Joseph P. Tracy 1929-4-28 8551 Humboldt Trinity River Valley, at Willow Creek 152 Comment
  CAS-BOT-BC63509  Ceanothus oliganthus var. sorediatus Doris K. Kildale 1926-11-13 2852 Humboldt Mouth of Lindsay Creek at Mad River. 30 Comment
  HSC37604  Ceanothus oliganthus var. sorediatus R. Sutherland 1975-7-11 6 .11775 Humboldt Along county rd. 259 Comment
  CAS-BOT-BC51224  Ceanothus parryi C. Hart Merriam 1920-8-27 s.n. Humboldt South fork Eel River (10 miles so. of Garberville) Comment
  RSA25753  Ceanothus parryi Carl B. Wolf 1941-7-28 11092 Humboldt Slope along Eel River, 1 mile S of Miranda. 30 Comment
  RSA89807  Ceanothus parryi P. A. Munz 1954-7-26 19884 Humboldt Humboldt County:S of Richardson Grove at Humboldt Mendocino County line Comment
  CAS-BOT-BC52044  Ceanothus prostratus Volney Rattan 1878-1-1 s.n. Humboldt unspecified Comment
  HSC43188  Ceanothus pumilus R. Sutherland 1976-4-17 1 .17476 Humboldt 549 Comment
  RSA46726  Ceanothus pumilus Doris K. Kildale 1937-8-15 15334 Humboldt High Divide Comment
  CAS-BOT-BC52218  Ceanothus thyrsiflorus Doris K. Kildale 1926-8-29 2598 Humboldt Blue Slide on the Van Duzen River Comment
  CAS-BOT-BC52219  Ceanothus thyrsiflorus Doris K. Kildale 1926-6-18 2399 Humboldt Gold Bluffs Comment
  HSC18335  Ceanothus thyrsiflorus W. K. Parks Jun 1932 1357 Humboldt Trinidad Comment
  HSC37609  Ceanothus thyrsiflorus R. Sutherland 1975-5-8 11 .8575 Humboldt Along county rd. near Mattole River, 6 mi W of Honeydew Comment
  HSC43218  Ceanothus thyrsiflorus R. Sutherland 1975-5-28 12 .28575 Humboldt Tolkan Recreational Site 503 Comment
  HSC89425  Ceanothus thyrsiflorus P. A. Daly 1984-5-8 6 Humboldt Trinidad Head. 61 Comment
  RSA25754  Ceanothus thyrsiflorus Carl B. Wolf 1941-7-28 11089 Humboldt Summit of Trinidad Head. 46 Comment
  SEINET3837108 Image available Ceanothus thyrsiflorus Joseph P. Tracy 1935-6-2 13924 Humboldt Big Lagoon 61 Comment
  UC1193280  Ceanothus thyrsiflorus R. H. Neuns 1950-10-17 142 Humboldt Bear Creek Road 6 mi n Shelter Cove; Quad. 28D4, Bear Creek Rd, n of Shelter Cove 609 Comment
  UC726578  Ceanothus thyrsiflorus A. A. Heller 1937-6-11 15916 Humboldt Near Big Lagoon Patric Point state Park Comment
  OBI44966  Ceanothus thyrsiflorus var. thyrsiflorus Midred J. Cady 1938-7-14 s.n. Humboldt Near Trinidad Comment
  HSC56191  Ceanothus velutinus var. velutinus Gilbert Muth 1979-8-1 12131 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1677 Comment
  UC582524  Centaurea benedicta Joseph P. Tracy 1928-10-7 8515 Humboldt at Willow Creek; Trinity River Valley 152 Comment
  UC1222951  Centaurea cyanus Joseph P. Tracy 1943-11-28 17456 Humboldt near Alton (Eel River bar at mouth of Van Duzen); Eel River, Van Duzen Comment
  UC204750  Centaurea cyanus Joseph P. Tracy 1918-7-1 4963 Humboldt along river from South Fork to Scotia, Holmes Flat Eel River; North Coast Ranges, , Holmes Flat 60 Comment
  CAS-BOT-BC272107  Centaurea cyanus Doris K. Kildale 1925-6-27 758 Humboldt Yager Creek, near mouth Comment
  POM225417  Centaurea solstitialis Philip A. Munz 1936-8-9 14332 Humboldt South fork of Eel River, 5 miles north of Humboldt-Mendocino county line. Comment
  UC154177  Centunculus minimus Harley P. Chandler May, 1901 1180 Humboldt North Coast Ranges, Humboldt Bay Humboldt Bay; North Coast Ranges, Humboldt Bay 30 Comment
  UC1196465  Cephalanthera austiniae Joseph P. Tracy 1914-7-5 4577 Humboldt between High Prairie and Snow Camp (Bald Mt.); Northern Coast Ranges, Bald Mt. 1219 Comment
  SFV18532  Cerastium glomeratum H. Barnes 2002-5-4 39 Humboldt McKinleyville. Hiller Park. Hammond Trail, 0.2 km north from parking lot. 25 Comment
  NY19046  Chamaecyparis lawsoniana J. P. Tracy 1927-3-27 7864 Humboldt Willow Creek Canyon 762.0 Comment
  SEINET10719673  Chamaecyparis lawsoniana Ronald J. Mastrogiuseppe 1966-1 Mastrogiuseppe s.n. Humboldt Growing in upper Bull Creek, Humboldt Redwoods State Park. Comment
  HSC55206  Chamerion angustifolium subsp. circumvagum Overton 1979-8-1 12324 Humboldt Near Mill Creek, close to the town of Hoopa 1341 Comment
  HSC102109  Cheilanthes gracillima M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 1012 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  HSC55068  Cheilanthes gracillima G. L. Clifton, Griswold 1979-7-31 11648 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1719 Comment
  RSA44511  Cheilanthes gracillima Henry M. Pollard 1947-9-1 s.n. Humboldt Peak of Somes Mountain, near Orleans 1524 Comment
  CAS-BOT-BC473030  Chenopodium macrospermum var. farinosum Malcom A. Nobs; S. Galen Smith 1949-8-11 1340 Humboldt Marsh at eastern shore of Stone Lagoon Comment
  UC673035  Chenopodium macrospermum var. halophilum Harold E. Parks and Joseph P. Tracy 1934-10-13 11151 Humboldt Big Lagoon; on shore 3 Comment
  RSA246903  Chenopodium multifidum R. F. Thorne, P. Everett 1965-8-5 35168 Humboldt Samoa Dunes. 3 Comment
  UC198570  Chenopodium pumilio Joseph P. Tracy 1916-9-5 4770 Humboldt 4 mi above mouth; Northern Coast Ranges, South Fork of Eel River 60 Comment
  UC79873  Chenopodium rubrum Harold E. Parks and Joseph P. Tracy 1934-10-13 11151 Humboldt Big Lagoon; shore 3 Comment
  SD40327  Chenopodium strictum var. glaucophyllum Edith A. Purer 1932-7-30 4670 Humboldt South of Orick Comment
  HSC61129  Chimaphila menziesii Jimerson, J. Pageau 1979-6-13 555 Humboldt Near Slate Creek Butte, close to the town of Orleans 549 Comment
  JEPS66585  Chimaphila umbellata Lincoln Constance 1934-6-14 873 Humboldt 2 mi. from mouth of Squaw Creek (on rd. to Grasshopper Peak); Bull Creek Region, S. Fork Eel R. 304 Comment
  UC1225900  Chimaphila umbellata Joseph P. Tracy 1947-7-9 17856 Humboldt Horse Mt. 1432 Comment
  UC21655  Chimaphila umbellata Bolander 6544 Humboldt Parkers Station, Eureka Trail Comment
  HSC98785  Chrysolepis chrysophylla var. chrysophylla Cara Witte 2007-9-14 649 Humboldt Grouse Mountain Lookout. Forest Service Road 4N70. 1649 Comment
  UC1187352  Chrysolepis chrysophylla var. chrysophylla R. G. Skolmen 1960-10-27 11 Humboldt 3 mi ese Big Hill, Hoopa Valley Indian Reservation 1188 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
  UCD130477  Cichorium intybus Lincoln Constance 1934-6-25 933 Humboldt Bull Creek Region, South Fork Eel River, on east side of the road at Englewood across the road from Collins' Englewood Campground. Comment
  UCD127358  Cicuta douglasii Bellue Goodwin 1932-9-28 s.n. Humboldt Arcata. Comment
  HSC9490  Cinna latifolia D. E. Anderson 1965-9-5 4085 Humboldt Along Mad River, 3 mi. S of Blue Lake Comment
  RSA20788  Circaea alpina subsp. pacifica Carl B. Wolf 1937-8-13 9253 Humboldt North Coast Range, 11 miles E of Hoopa Valley on new road towards Trinity Summit. 1524 Comment
  UCD20404  Circaea alpina subsp. pacifica Donald C. Hagar 1957-8-27 218 Humboldt 8.5 miles NE of Hoopa, Domingo Block 'e'. 1371 Comment
  SEINET201069  Cirsium arvense Joseph P. Tracy 1933-8-13 12963 Humboldt Arcata Bottom 15 Comment
  SEINET9341561  Cirsium brevifolium Unknown 1948-9-3 1850 Humboldt Humboldt Comment
  CAS-BOT-BC284438  Cirsium brevistylum Henry M. Pollard 1948-8-9 s.n. Humboldt Camp Creek near Orleans Comment
  CAS-BOT-BC278060  Cirsium douglasii var. breweri Alice Eastwood; John Thomas Howell 1937-6-24 4865 Humboldt 5 miles east of Berry Summit Comment
  HSC104423  Cirsium occidentale Jenny Lynn Hutchinson 2013-6-27 Humboldt Mt. Andy Comment
  CAS-BOT-BC285529  Cirsium occidentale var. candidissimum L. B. Kildale 1930-7-7 10261 Humboldt Chaparral Mt. at Bug Creek 914 Comment
  UC204828  Cirsium occidentale var. venustum Joseph P. Tracy 1918-7-3 4988 Humboldt Wilder Ridge Northern Coast Ranges, Wilder Ridge 762 Comment
  HSC97210  Cirsium occidentale var. venustum Kiera A. Freeman, Heather J. Perry 2007-6-11 5 Humboldt 14.1 mi. S of Hwy. 299 on NF1 1372 Comment
  JEPS59211  Cirsium occidentale var. venustum Lincoln Constance 1934-5-29 724 Humboldt near jctn South Fork of Eel River (Upper look prairie); Bull Creek Region, South Fork of Eel River, Upper Look Prai 365 Comment
  UC166542  Cirsium quercetorum J. P. Tracy 1901-6-16 1138 Humboldt immediate vicinity of Eureka 0 Comment
  SEINET11833992  Cirsium remotifolium J. P. Tracy 1949-1 18472 Humboldt Kinsey Ridge, S from Grouse Mt., 2 to 6 mi, E of headwaters of Redwood Creek 1280 Comment
  HSC98565  Cirsium remotifolium var. odontolepis Cara Witte 2008-7-16 910 Humboldt Board Camp Mountain. Forest Service Road 4N38. 1/2 mile south of intersection with National Forest 1. 1409 Comment
  RSA40410  Cirsium vulgare P. A. Munz 1948-8-13 12349 Humboldt Highway 229, 21 miles E of Blue Lake 762 Comment
  RSA47110  Cirsium vulgare Doris K. Kildale 1925-9-22 1323 Humboldt Fickle Hill above Arcata Comment
  CAS-BOT-BC160953  Clarkia amoena subsp. amoena Doris K. Kildale 1928-7-9 5699 Humboldt Bug Creek - Chaparral Mountain 914 Comment
  CAS-BOT-BC160954  Clarkia amoena subsp. amoena Doris K. Kildale 1928-6-17 5233 Humboldt Miranda, south fork of Eel River Comment
  CAS-BOT-BC160970  Clarkia amoena subsp. amoena L. R. Abrams 1916-7-11 6020 Humboldt Mouth of Grizzly Creek on Van [Duzon] Duzen River - Redwood forest Comment
  RSA167246  Clarkia concinna subsp. concinna Joseph P. Tracy 1950-6-15 18813 Humboldt Mail Ridge, North of Harris, at Huestis Rock on northeast side of ridge 823 Comment
  UC1537616  Clarkia concinna subsp. concinna Gordon H. True Jr. 1936-5-11 455 Humboldt w Miranda; Salmon Creek 457 Comment
  JEPS43694  Clarkia gracilis subsp. gracilis Joseph P. Tracy 1936-6-10 14935 Humboldt mountain slopes w of mouth South Fork Trinity River 609 Comment
  HSC16258  Clarkia purpurea subsp. quadrivulnera B. D. Rogers, William J. Ferlatte 1966-6-15 2096 Humboldt E of Bridgeville on Hwy. 36 671 Comment
  CAS-BOT-BC439097  Claytonia cordifolia Joseph P. Tracy 1932-7-15 10583 Humboldt Trinity Summit. Ridges East of Corral Prairie 1828 Comment
  SEINET196691 Image available Claytonia perfoliata subsp. intermontana Joseph P. Tracy 1949-6-6 18306 Humboldt Trinity Summit Range; Happy Camp Mt., NE of Hawkins Bar. 1280 Comment
  HSC74046  Claytonia saxosa Gail Newton 1980-7-11 1320 Humboldt Near Red Mtn. 1341 Comment
  HSC76598  Claytonia sibirica Teresa Prendusi 1981-7-24 474 Humboldt Near Whiteys Peak 1585 Comment
  POM118717  Claytonia sibirica Marcus E. Jones 1924-4-26 s.n. Humboldt Scotia Comment
  SD38113  Claytonia sibirica Marie Cummings 1933-5-22 110 Humboldt Near Blockburg Comment
  HSC17719  Claytonia washingtoniana D. E. Anderson 1962-3-31 1972 Humboldt Coastal area of Prairie Creek State Park Comment
  UC1196208  Clematis ligusticifolia Joseph P. Tracy 1937-7-11 15424 Humboldt along river Garberville 152 Comment
  SBBG970  Clintonia andrewsiana H. and M. Dearing 1931-5-16 251 Humboldt Weott Comment
  CAS-BOT-BC499336  Clintonia andrewsiana M. S. Jussel 1931-5-2 s. n. Humboldt 20 miles N. of Garberville Comment
  HSC100554  Clintonia andrewsiana Carl C. Marshall May 1885 69 Humboldt Redwood forests. Comment
  SEINET3885722  Clintonia andrewsiana D. W. McNeal 1977-6-6 2047 Humboldt On a Redwood House Rd., 2.6 mi. n.e. of Hwy. #36 between Bridgeville and Charlotta.; 0 Comment
  UC14994  Clintonia andrewsiana Joseph Burtt Davy and Walter C. Blasdale 1899-6-13 5496 Humboldt between Camp Grant and Pepperwood; North Coast Ranges Comment
  UC3541  Clintonia uniflora Mrs. M. H. Manning 1901-1 Humboldt Trinity Summit Comment
  UC1197659  Clintonia uniflora Joseph P. Tracy 1930-7-16 8966 Humboldt near McKay Camp (South Fork Mountain); South Fork Mountain 1676 Comment
  UC146212  Clintonia uniflora Joseph P. Tracy 1908-6-27 2733 Humboldt at foot of Buck Mountain, along the Van Duzen River Van Duzen River; Northern Coast Ranges, Buck Mountain, Van Duzen River 304 Comment
  HSC75449  Collinsia grandiflora J. O. Sawyer 1980-7-18 3583 Humboldt North Trinity Mountain Research Natural Area, north of Mill Creek Lake to Red Cap Hole. Comment
  RSA127485  Collinsia grandiflora Milo S. Baker 1946-6-15 11481 Humboldt Horse Mt. Road at Ski Lodge. 1220 Comment
  UC168981  Collinsia grandiflora Harley P. Chandler 1901-6-14 1500 Humboldt between Orleans Somes Bar Klamath River; , North Coast Ranges 426 Comment
  UC582467  Collinsia heterophylla Joseph P. Tracy 1927-5-30 8089 Humboldt vicinity of Garberville 121 Comment
  UC1222820  Collinsia linearis Joseph P. Tracy 1950-7-2 18969 Humboldt on Ridge 2 mi e of Grove's Prairie (Trinity Summit, Happy Camp Mountain); Trinity Summit, Happy Camp Mountain 1371 Comment
  HSC102110  Collinsia parviflora M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 1013 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  HSC45793  Collinsia parviflora J. P. Smith, J. O. Sawyer 1973-5-12 6691 Humboldt 6.1 mi. from Redwood Creek on Hoopa Rd. Comment
  HSC74348  Collinsia parviflora Gail Newton 1980-6-28 744 Humboldt Near Mad River Butte. 1536 Comment
  UC1196850  Collinsia sparsiflora var. sparsiflora Joseph P. Tracy and Ernest B. Babcock 1912-5-11 3628 Humboldt near Hydesville (hillside between Alton and Hydesville); Northern Coast Region 30 Comment
  JEPS7057  Collinsia torreyi var. wrightii Joseph P. Tracy 1935-7-28 14314 Humboldt head of Devil's Hole Trinity Summit 1828 Comment
  UC1197855  Collomia grandiflora Joseph P. Tracy July, 1908 2785 Humboldt ridge between Van Duzen and Mad Rivers at Low Gap (Humboldt and Trinity counties); Northern Coast Ranges 457 Comment
  HSC16927  Collomia heterophylla D. E. Anderson 1965-5-8 3639 Humboldt About 2 mi. N of Willow Creek on the road running along E side of Trinity River Comment
  UC879765  Collomia heterophylla Elizabeth Parsons Hawver 1915-6-1 Humboldt Carlotta Comment
  RSA125656  Collomia heterophylla E. K. Balls 1957-5-25 22604 Humboldt 8.1 mi. sw. from Dinsmores, State Hwy. 36. 823 Comment
  RSA21450  Collomia heterophylla C. B. Wolf 1937-8-13 9214 Humboldt North coast range, 8 mi. east of Hoopa Valley on new road towards Trinity summit. 1220 Comment
  RSA71937  Collomia heterophylla F. W. Peirson 1926-7-12 7035 Humboldt Redwood Creek bottom landes below bridge, Orick Comment
  UC1197861  Collomia tracyi Joseph P. Tracy 1930-6-23 9130 Humboldt on hillside of disintegrated rock Northern Coast Ranges, Horse Mountain 1432 Comment
  UC133640  Collomia tracyi Joseph P. Tracy 1908-6 2720 Humboldt opposite Buck Mountain (along river on sand bar); Northern Coast Ranges, Valley of Van Duzen River 304 Comment
  UC978529  Collomia tracyi Joseph P. Tracy 1939-8-16 16420 Humboldt Grouse Mountain 1524 Comment
  UC978530  Collomia tracyi Joseph P. Tracy 1939-8-5 16373 Humboldt sand bars along river Van Duzen River, Dinsmore's 737 Comment
  HSC96489  Comarum palustre Gordon Leppig 1997-8-3 634 Humboldt Big Lagoon County Park; Big Lagoon Bog 3 Comment
  UC1197343  Conioselinum pacificum Joseph P. Tracy 1914-7-12 4579 Humboldt near Indianola; Northern Coast Region, Humboldt Bay Region 0 Comment
  HSC67014  Conyza canadensis J. P. Smith 1971-10-9 4988 Humboldt Banks and flood plain of the Mad River above the fish hatchery. Comment
  UC164847  Conyza canadensis Joseph P. Tracy 1911-7-9 3458 Humboldt near its mouth along Willow Creek; Northern Coast Ranges, Tributary of Trinity River, Willow Cr 182 Comment
  HSC48985  Coptis laciniata M. A. Baker 1979-5-25 765 Humboldt Comment
  HSC40272  Corallorhiza maculata J. D. Ackerman 1976-7-8 772 Humboldt 0.25 mi. E of Hwy. 299 on Chezem Rd. Comment
  HSC48687  Corallorhiza mertensiana Brad Klipfel 1973-7-31 256 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  UC1196447  Corallorhiza mertensiana Joseph P. Tracy 1921-5-30 5499 Humboldt near Lawrence Creek; Northern Coast Ranges, Kneeland Prairie 762 Comment
  UC1222818  Cordylanthus maritimus subsp. palustris Joseph P. Tracy 1950-6-17 18839 a Humboldt slough at railroad bridge (salt marsh); Eureka Comment
  HSC76251  Cordylanthus tenuis subsp. viscidus Denis Kearns 1981-7-6 64 Humboldt Near Mosquito Lake 1256 Comment
  UC1173700  Cordylanthus tenuis subsp. viscidus Joseph P. Tracy 1939-8-16 16418 Humboldt Grouse Mountain 1524 Comment
  UC936241  Cordylanthus tenuis subsp. viscidus Joseph P. Tracy 1949-8-4 18411 Humboldt Mud Springs Trinity Summit 1341 Comment
  CAS-BOT-BC101138  Corethrogyne filaginifolia D. M. Gordon 1982-9-20 s.n. Humboldt End of county road (Lanphere Rd.) on Hunt property. Lanphere-Christensen Dunes Preserve, 3 miles west of Arcata Comment
  CAS-BOT-BC101151  Corethrogyne filaginifolia A. A. Heller 1924-7-23 13874 Humboldt along the highway at the mouth of Little River near Trinidad Comment
  JEPS15874  Corethrogyne filaginifolia Joseph P. Tracy 1928-5-20 8442 Humboldt Petrolia; Mattole Valley 60 Comment
  UC1223040  Corethrogyne filaginifolia Joseph P. Tracy 1947-7-7 17759 Humboldt mouth of (n side) Mad River Comment
  RSA1406  Cornus nuttallii E. R. Johnson 1929-08 1432 Humboldt Eel River. 91 Comment
  RSA89892  Cornus nuttallii E. K. Balls, P. C. Everett 1953-10-13 18656 Humboldt 17.4 mi. east of jct. of hwys 101 and 299 above Blue Lake. 274 Comment
  UC1222617  Cornus nuttallii Joseph P. Tracy 1950-10-7 19384 Humboldt Trinity R. Valley at Willow Creek; Trinity R. Valley 152 Comment
  UC502978  Cornus nuttallii Joseph P. Tracy 1932-10-9 10869 Humboldt Trinity R. Valley at Willow Creek; Northern Coast Ranges, Trinity R. Valley 152 Comment
  CAS-BOT-BC172850  Corylus cornuta subsp. californica Joseph P. Tracy 1946-8-25 17639 Humboldt Table Bluff, windswept N slopes, along Hookton Road 9 Comment
  CAS-BOT-BC180302  Corylus cornuta subsp. californica Joseph P. Tracy 1931-8-16 9611 Humboldt near Briceland 152 Comment
  CAS-BOT-BC180308  Corylus cornuta subsp. californica L. B. Kildale 1930-9-21 10225 Humboldt Bluff Creek trail to Fish Lake Comment
  OBI36662  Corylus cornuta subsp. californica David J. Keil 1983-7-2 17312 Humboldt Ca. 4 mi SE of SR 299 along Titlow HIll Rd below Horse Mtn Summit Rd Comment
  POM270388  Corylus cornuta var. californica Lyman Benson 1927-7-12 621 Humboldt Weott Ranger Station; Mt. Range: Seaward N Coast; River: South Fork Eel. 61 Comment
  RSA34307  Cotula australis C. Kistner 1935-5-15 s.n. Humboldt Arcata Bottom. Comment
  UCSB9478  Cotula coronopifolia Parks, H. 1941-09 Humboldt Little River State Park Comment
  HSC5431  Cotula coronopifolia H. E. Parks Sep 1941 24211 Humboldt Little River Beach Park, along highway Comment
  UC1198827  Crassula connata var. subsimplex Joseph P. Tracy 1940-4-7 16528 Humboldt near Samoa on Humboldt 6 Comment
  JEPS37501  Crepis acuminata Joseph P. Tracy 1935-7-30 14382 Humboldt Salmon Summit 2103 Comment
  CDA4431  Crepis capillaris T. C. Fuller 1958-6-17 597 -58 Humboldt Wildcat Ridge near Bunker Hill. 0 Comment
  UCD130982  Crepis setosa Joseph P. Tracy 1947-7-13 17769 Humboldt Hors-Linto Creek. 152 Comment
  CAS-BOT-BC299700  Crocidium Doris K. Kildale 1926-3-21 1570 Humboldt Kneeland Prarie 853 Comment
  HSC63483  Croton setiger M. A. Baker 1979-6-6 376 Humboldt Along Hwy. 96 Comment
  UC176947  Cryptantha flaccida Joseph P. Tracy 1912-7-26 3832 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  UC1239656  Cryptantha flaccida Joseph P. Tracy 1937-7-19 15455 Humboldt nw slope Buck Mountain; Northern Coast Ranges 914 Comment
  UC175691  Cryptantha flaccida Joseph P. Tracy 1908-6 2758 Humboldt opposite Buck Mountain (at Little Van Duzen Bridge); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  UC164379  Cryptantha torreyana Harley P. Chandler Jun 1901 1541 Humboldt Klamath River North Coast Ranges 304 Comment
  JEPS39837  Cupressus lawsoniana W. L. Jepson 1902-6 2131 Humboldt Three Creeks to summit of ridge (on grade to Redwood Creek) 914 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
  HSC6390  Cuscuta californica J. P. Tracy 1930-7-16 8912 Humboldt S Fork Mtn. near McKay Camp 1677 Comment
  HSC6400  Cuscuta salina J. Wendell Howe 1934-7-18 988 Humboldt Humboldt Bay Comment
  POM263623  Cuscuta salina var. major C. C. Harris, S. K. Harris 1941-8-28 1175 Humboldt Humboldt Bay near Table Buff Comment
  UC562480  Cuscuta subinclusa Joseph P. Tracy 1924-7-20 6736 Humboldt Brannan Mt., on Willow Creek Road Brannan Mt. 1005 Comment
  UCSB24349  Cuscuta subinclusa Tracy, Joseph 1924-7-20 Humboldt Brannan Mt.; on Willow Cr. Road 1005 Comment
  UCD19980  Cynoglossum grande C. H. Lamoureux; R. Gankin 1956-3-17 1041 Humboldt 1 mile north of Garberville on Hwy 101. Comment
  UC1222259  Cynoglossum occidentale Joseph P. Tracy 1949-8-26 18508 Humboldt 6 mi. n.e. Hawkin's Bar (Happy Camp Mt.); Trinity Summit Range, Happy Camp Mt. 1280 Comment
  HSC9521  Cynosurus echinatus Paul Shields Jun 1955 Humboldt 6 mi. W of Myers Flat Comment
  OBI22352  Cynosurus echinatus Joseph P. Tracy 1941-6-29 16920 Humboldt McClellan Mt Comment
  SBBG53060  Cynosurus echinatus R. N. Philbrick, J. R. Haller 1976-6-25 4 Humboldt Capetown-Ferndale Rd, NW of Cape Mendocino, ca. 4 mi NW of Bear River at Capetown 457 Comment
  UCD60162  Cynosurus echinatus Bill Brooks 1948-1 s. n. Humboldt 2 miles north of Blocksburg. Comment
  JEPS64087  Cyperus bipartitus Joseph P. Tracy 1931-9-7 9664 Humboldt Trinity R. Valley at Willow Creek; Trinity R, Valley, Willow Creek 152 Comment
  HSC95388  Cyperus eragrostis Andrea Pickart 2002-7-9 176 Humboldt Bracut Marsh in zone between brackish and riparian 10 Comment
  SEINET200971  Cyperus erythrorhizos Joseph P. Tracy 1920-8-15 5364 Humboldt Klamath River at mouth of Bluff Creek. 152 Comment
  HSC96342  Cyperus esculentus Gordon Leppig 2004-8-25 2195 Humboldt E edge of Eel River at Holmes Flat Comment
  RSA54120  Cyperus squarrosus Henry M. Pollard 1945-9-5 s.n. Humboldt Wilson Creek, Klamath River Canyon Comment
  POM66966  Cytisus monspessulanus Marcus E. Jones 1924-4-26 s.n. Humboldt Eureka. Comment
  HSC71613  Cytisus scoparius J. P. Smith 1973-5-26 6833 Humboldt Scotia Bluffs along the Eel River near Rio Dell Comment
  HSC58694  Dactylis glomerata Overton, Butler 1979-8-2 12697 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  SBBG53086  Dactylis glomerata R. N. Philbrick, J. R. Haller 1976-6-25 6 Humboldt Capetown-Ferndale Rd, NW of Cape Mendocino, ca. 4 mi NW of Bear River at Capetown 457 Comment
  CAS-BOT-BC189735  Danthonia californica Alice Eastwood; John Thomas Howell 1937-6-22 4734 Humboldt Near Alder Point. Comment
  HSC71722  Danthonia californica Marc Baker 1980-7-26 2465 Humboldt Near Sims Creek. 610 Comment
  HSC9552  Danthonia californica J. P. Tracy 1927-7-4 8234 Humboldt Lone-Star Creek, Iagua. 610 Comment
  UC1056068  Danthonia californica var. americana J. I. Mallory 1955-6-7 112 Humboldt Luke Prairie Quad 29-B-3 (n end) 350 Comment
  JEPS49588  Darmera peltata Harley P. Chandler May 1901 1233 Humboldt Redwood Belt; North Coast Ranges 91 Comment
  CDA30706  Daucus carota M. K. Beyers, I. Shepardson 2009-9-13 251 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
  SD50777  Daucus carota Darley F. Howe 1959-8-4 2805 Humboldt 9 miles east of Arcata on # 395 Comment
  UC420522  Daucus pusillus Joseph Burtt Davy and Walter C. Blasdale 1899-6-11 5417 Humboldt near Hubbards Comment
  CAS-BOT-BC9228  Delphinium decorum Mrs. H. C. Cantelow 1941-4-26 s.n. Humboldt 12 miles SW of Ferndale on road to Cape Mendocino Comment
  UC467718  Delphinium decorum subsp. tracyi Joseph Burtt Davy and Walter C. Blasdale 1899-6-29 5802 B Humboldt Trinity Summit Comment
  UCR45825  Delphinium decorum subsp. tracyi N. Meiselman, M. Bransom, D. Brown, Ron Hildebrandt 1986-4-19 26 Humboldt North Coast Range, Horse Mountain, 0.5 mi. down Titlow Road from Ski Area 1372 Comment
  HSC33057  Delphinium decorum subsp. tracyi Thomas W. Nelson 1974-5-7 1236 Humboldt Beside Kneeland Rd. 0.5 mi. N of Kneeland School Comment
  POM126169  Delphinium decorum subsp. tracyi Joseph P. Tracy 1922-6-5 6082 Humboldt Head of S Yager Creek. 762 Comment
  UC668272  Delphinium glaucum Joseph P. Tracy 1935-7-25 14241 Humboldt lower end Brett Hole (along streams); Trinity Summit 1584 Comment
  CAS-BOT-BC10312  Delphinium hesperium Volney Rattan 1878-1-1 s.n. Humboldt Unspecified Comment
  HSC95789  Delphinium nudicaule Kevin Thomas 2004-3-28 9 Humboldt Horse Linto Creek Campground Comment
  HSC86902  Delphinium patens Terry Hines, Ellen Purcell, N. Williams 1988-5-1 62 Humboldt Titlow Hill Rd., 0.75 mi. from Hwy. 299 625 Comment
  CAS-BOT-BC121975  Delphinium trolliifolium Mrs. G Earle Kelly 1924-6-1 s.n. Humboldt Kneeland Prairie Comment
  UC162815  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
  UC668069  Delphinium trolliifolium Joseph P. Tracy 1935-6-23 14000 Humboldt near Coyote Peak; French Camp Ridge 1066 Comment
  CDA18064  Deschampsia cespitosa subsp. cespitosa Huggel 1999-7-3 PDR 1223445 Humboldt Railroad right-of-way, Eureka. 0 Comment
  UC1103219  Deschampsia danthonioides Joseph P. Tracy 1914-5-30 4477 Humboldt Alton Northern Coast Ranges, Alton 30 Comment
  UCD62501  Deschampsia danthonioides A. H. Murphy 1951-5-21 47 Humboldt Prior Ranch, 2 miles S of Blocksburg. Comment
  CAS-BOT-BC201770  Deschampsia elongata L. R. Abrams 1918-6-16 7153 Humboldt Willow Creek Comment
  RSA256709  Deschampsia elongata D. E. Anderson, S. Dowty, Thomas W. Nelson 1972-6-17 5712 Humboldt Mc Keown Ranch North of Dinsmore Comment
  UC187267  Deschampsia elongata Joseph P. Tracy 1911-7-7 3412 Humboldt 3 mi. n.w. of junction of Willow Creek with Trinity R. (near Beebe's Ranch, at meadows on mt. side); Northern Coast Ranges 914 Comment
  JEPS9737  Dicentra formosa Joseph P. Tracy 1933-5-28 12414 Humboldt Carlotta; Northern Coast Ranges 60 Comment
  UC1021939  Dicentra formosa Rolf Y. Berg 1955-6-17 Humboldt n of Wiott (Highway 101, Avenue of the Giants) Comment
  UC1362285  Dicentra formosa Kingsley R. Stern 1964-6-15 2108 Humboldt ca 2.5 mi s Fortuna (0.5 mi e on Drake Hill Road, on Newman property) Comment
  HSC3002  Dichelostemma capitatum subsp. capitatum Francis Winter 1960-5-7 Humboldt 3 mi. N of Redwood Creek Ranch 457 Comment
  HSC74700  Dichelostemma ida-maia Gail Newton 1981-8-5 2371 Humboldt Near Bug Creek, E Fork 914 Comment
  UC1198187  Dichelostemma ida-maia Joseph P. Tracy 1912-7-26 3860 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  UC1222690  Dichelostemma ida-maia Joseph P. Tracy with A. H. Murphy 1951-6-26 19568 Humboldt vicinity Twin Lakes and Snow Camp; Twin Lakes Comment
  CAS-BOT-BC501021  Dichelostemma ida-maia Henry M. Pollard 1948-8-4 s.n. Humboldt Orleans Mt. 1371 Comment
  RSA12440  Dichelostemma ida-maia Carl B. Wolf 1934-7-2 5853 Humboldt 2 miles from Bald Mt. on road to Korbel. 762 Comment
  RSA53854  Dichelostemma ida-maia Henry M. Pollard 1946-8-16 s.n. Humboldt Across river from Orleans. Comment
  UC1198179  Dichelostemma ida-maia Frank A. Graham 1935-7-27 Humboldt lower end Crogan Hole; Trinity Summit 1463 Comment
  UCD63953  Digitaria ischaemum Joseph P. Tracy 1950-9-22 19371 Humboldt Klamath River, near Slate Creek, below Orleans 8 miles. 121 Comment
  JEPS8812  Dipsacus fullonum Joseph P. Tracy 1937-8-3 15610 Humboldt along Mad River near Blue Lake; Mad River 15 Comment
  RSA367638  Disporum smithii Hutchinson 1927-05 s.n. Humboldt [No locality information provided] Comment
  HSC2192  Distichlis spicata J. P. Tracy 1933-8-22 12989 Humboldt Mouth of Eel River. 3 Comment
  HSC26352  Distichlis spicata T. O. Osborne 1970-4-5 68 Humboldt Flat-iron rock, 3/4 mi. NW of Trinidad Lighthouse. Comment
  UCR32182  Distichlis spicata David J. Keil 1983-7-1 17286 Humboldt Pacific Coast, c. 5 mi. west of Petrolia along Mattole Road 225 Comment
  HSC55019  Dodecatheon jeffreyi Overton, Butler 1979-7-31 11426 Humboldt Near Water Dog Lakes, close to the town of Hoopa 1830 Comment
  JEPS14441  Downingia elegans W. L. Jepson 1927-7-3 12363 Humboldt Miranda South Fork of Eel River 228 Comment
  HSC36312  Drosera rotundifolia James Beaver 1973-5-20 Humboldt Big Lagoon Comment
  HSC40018  Drymocallis glandulosa var. glandulosa Thomas W. Nelson, Jane P. Nelson 1976-7-1 2922 Humboldt Along N side of Mt. Lassic (Signal Peak) 1738 Comment
  HSC57875  Drymocallis lactea var. lactea Overton, Butler 1979-7-31 11411 Humboldt Near Water Dog Lakes, close to the town of Hoopa 1830 Comment
  HSC58143  Drymocallis lactea var. lactea Gilbert Muth 1979-8-1 12169 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1677 Comment
  CAS-BOT-BC70871  Dryopteris arguta Doris K. Kildale 1926-7-22 2415 Humboldt near Canyon Park Comment
  POM208982  Dryopteris expansa Lincoln Constance 1934-6-3 811 Humboldt Border of Horse Praire, adjecent to Bull Cr watershed on S side 396 Comment
  UCSB30621  Dryopteris expansa Edwards, David 1974-9-2 Humboldt ca. 5ft N of dirt road, ca. 350 ft from its junction with Fickle Hill Rd., Arcata. 106 Comment
  UCD60874  Echinochloa crus-galli H. E. Parks Date Unknown 24213 Humboldt Spruce Cove, Trinidad. Comment
  UCD61098  Echinochloa muricata Martin Pontoni 1925-11-14 Humboldt Eureka. Comment
  HSC100405  Echinospermum Carl C. Marshall Jun 1886 317 Humboldt Trail E of Hoopa. Comment
  HSC101546  Ehrharta erecta J. P. Smith 2009-12-14 12703 Humboldt Along sidewalk at 980 Sixth St. in Arcata; weed Comment
  RSA246898  Eleocharis acicularis var. gracilescens Robert F. Thorne, Percy C. Everett 1965-8-9 35326 Humboldt Clam Beach County Park: along highway. 3 Comment
  CAS-BOT-BC112839  Eleocharis macrostachya David Daniels Keck 1938-8-5 4768 Humboldt Big Lagoon, on shore in drying clay mud. Comment
  RSA53823  Eleocharis obtusa var. engelmannii Henry M. Pollard s.n. Humboldt Near Orleans. Comment
  RSA298364  Eleocharis palustris Thomas W. Nelson 1977-9-22 3749 Humboldt In drainage ditch along east side of State Route 101 just north of the Eureka Airport Comment
  RSA53824  Eleocharis palustris Henry M. Pollard 1946-8-22 s.n. Humboldt Ullathorne Riffle, Klamath River, Orleans Region Comment
  HSC7346  Eleocharis parvula D. E. Anderson 1961-9-9 1791 Humboldt Along S end of Hwy. 101 causeway over Big Lagoon Comment
  UC1103662  Eleocharis parvula Joseph P. Tracy 1921-8-7 5868 Humboldt Stone Lagoon 3 Comment
  UC666916  Eleocharis suksdorfiana Joseph P. Tracy 1932-7-14 10559 Humboldt Trinity Summit, Corral Prairie 1584 Comment
  HSC32330  Elymus elymoides var. californicus D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5634 Humboldt Senteney Rock, a large barren Franciscan Rock along Swayback Ridge. Comment
  HSC58627  Elymus elymoides var. elymoides Overton, Butler 1979-7-31 11458 Humboldt Near Water Dog Lakes, close to the town of Hoopa 1830 Comment
  HSC37236  Elymus glaucus Lon Hall 1975-6-19 394 Humboldt About 2 mi. N of Shelter Cove Rd. on Horse Mtn. Rd. 549 Comment
  HSC54641  Elymus glaucus Overton, Butler 1979-7-24 9813 Humboldt Near Black Rock, close to the town of Willow Creek 1463 Comment
  HSC65112  Elymus glaucus J. P. Smith, Steve Selva 1970-6-14 3847 Humboldt Along Hwy. 96 at Whitmore Creek 152 Comment
  HSC76550  Elymus glaucus Denis Kearns 1981-7-22 312 Humboldt Near Whiteys Peak. 1487 Comment
  HSC9706  Elymus glaucus E. W. Styskel 1964-5-17 90 Humboldt 1.5 miles SE of Redcrest along Hwy. 101. Comment
  RSA53859  Elymus glaucus Henry M. Pollard 1946-8-10 s.n. Humboldt Roadside south of Klamath River and east of Perch Creek, Orleans region Comment
  UC1103476  Elymus glaucus Joseph P. Tracy 1936-6-9 14889 Humboldt Bear River Ridge 457 Comment
  UC526799  Elymus glaucus Joseph P. Tracy 1932-7-12 10448 Humboldt Corral Prairie Klamath Mountains, Trinity Summit 1524 Comment
  UC1103200  Elymus glaucus Joseph P. Tracy 1950-8-20 19327 1/2 Humboldt near Slate Creek; Klamath River 121 Comment
  CAS-BOT-BC203473  Elymus glaucus subsp. glaucus Joseph P. Tracy 1934-7-9 13336 Humboldt Near Harris 762 Comment
  CAS-BOT-BC203474  Elymus glaucus subsp. glaucus Harold E. Parks; Joseph P. Tracy 1934-6-14 11026 Humboldt Horse Mt. 1371 Comment
  JEPS72931  Elymus glaucus subsp. jepsonii Lincoln Constance 1934-5-23 612 Humboldt se slope of mt. above Look Prairie; South Fork Eel River, Bull Creek Region 365 Comment
  SEINET200931  Elytrigia repens J. P. Tracy 1936-8-25 15160 Humboldt Eureka 30 Comment
  UC1103293  Elytrigia repens Joseph P. Tracy 1944-7-1 17477 Humboldt Eureka 30 Comment
  UC526802  Elytrigia repens Joseph P. Tracy 1925-9-13 7267 Humboldt Eel River North Coast Ranges (mouth, on river bank) 6 Comment
  JEPS75063  Empetrum hermaphroditum Gary S. Lester 1975-4-6 604 Humboldt n Trinidad (Megwil Point); Trinidad State Beach, Elk Head 15 Comment
  HSC33094  Empetrum nigrum J. P. Smith 1975-3-31 8048 Humboldt Megwill Point on Elk Head, just N of College Cove Comment
  RSA39090  Epilobium angustifolium var. macrophyllum P. A. Munz 1948-8-15 12361 Humboldt 2 miles west of Hydesville Comment
  RSA43871  Epilobium angustifolium var. macrophyllum H. M. Pollard 1947-8-30 s.n. Humboldt North Road along Klamath River near Redcap Creek. Orleans region. Comment
  HSC34784  Epilobium canum subsp. canum R. E. Cooksey Sep 1972 58 Humboldt On Ave. of Giants 30 Comment
  HSC55181  Epilobium ciliatum G. L. Clifton, Griswold 1979-8-2 12199 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  RSA32869  Epilobium ciliatum subsp. ciliatum A. A. Heller 1923-7-6 13767 Humboldt Humboldt Camp 10 miles south of Dyerville. Comment
  UC583078  Epilobium ciliatum subsp. ciliatum P. A. Munz 1936-8-10 14340 Humboldt 15 mi e Bridgeville; Little Van Duzen River Comment
  UC562508  Epilobium ciliatum subsp. glandulosum Joseph P. Tracy 1935-8-25 14228 Humboldt Corral Prairie Trinity Summit (in meadow) 1584 Comment
  HSC103288  Epilobium ciliatum subsp. glandulosum John McRae 2012-9-13 Humboldt Six Rivers National Forest, Board Camp Mountain Quad, Lower Trinity District, Board Camp Mtn. Road. 1381 Comment
  CHSC31296  Epilobium ciliatum subsp. watsonii Mark Stopher 1980-7-2 123 Humboldt Along Elk River near Hwy 101 bridge. 1 Comment
  HSC23493  Epilobium ciliatum subsp. watsonii R. A. Vanbianchi 1971-9-10 84 Humboldt Along Fieldbrook Rd. .7 mi. from Jct. with old Hwy. 299 Comment
  JEPS31503  Epilobium densiflorum Joseph P. Tracy 1938-7-5 16003 Humboldt wet place in flat by old Strong's District School house (5 mi e of town); Carlotta 45 Comment
  CAS-BOT-BC171848  Epilobium septentrionale Carl D. Duncan 1920-9-22 s.n. Humboldt Hoopa Valley, Hoopa Indian Reservation Comment
  UCD106771  Epilobium septentrionale R. N. Bowman 1971-4-12 52 Humboldt Ca. 1.7 miles SE of Myers Flat off of Highway 101. Ca. 4 feet above S fork of Eel River on E bank. 1066 Comment
  RSA259564  Epipactis gigantea D. E. Anderson, J. P. Smith 1971-6-28 J- 1224 Humboldt Growing along Mad River ca. 2 mi. south of Blue Lake. Comment
  RSA34053  Epipactis gigantea A. A. Heller 1923-7-10 13790 Humboldt Eel River between Scotia and Pepperwood. Comment
  RSA684659  Equisetum arvense May N. Ackley 1933-5-2 301 Humboldt Redwood Hwy. Comment
  HSC22867  Equisetum laevigatum D. E. Anderson 1965-6-10 3792 Humboldt Along NW Pacific railroad tracks in Eureka, in harbor area and adjacent sites Comment
  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
  HSC881  Equisetum telmateia subsp. braunii C. B. Wolf 1927-8-28 1181 Humboldt On rd. between Eureka and Arcata Comment
  POM281806  Equisetum telmateia var. braunii Lyman Benson 1928-7-9 824 Humboldt Weott Ranger Station. Seaward N Coast Mtn range, S Fork Eel River. 61 Comment
  RSA239690  Equisetum telmateia var. braunii Larry E. DeBuhr 1973-4-23 986 Humboldt Richardson Grove Redwood State Park. Comment
  HSC9769  Eragrostis hypnoides J. P. Tracy 1931-9-7 9663 Humboldt Trinity River Valley, Willow Creek Comment
  UC249866  Eragrostis pectinacea var. pectinacea Joseph P. Tracy 1924-8-31 6835 Humboldt Klamath River at Bluff Creek; Northern Coast Ranges, Klamath River, Bluff Creek 91 Comment
  CAS-BOT-BC291173  Erechtites glomeratus Marck Menke 1999-5-30 31 Humboldt Patrick's Point State Park, along trail near Abalone Point Comment
  CAS-BOT-BC296111  Erigeron foliosus var. confinis Joseph P. Tracy 1935-6-23 13967 Humboldt French Camp Ridge 1066 Comment
  UC581721  Erigeron foliosus var. mendocinus Joseph P. Tracy 1931-5-17 9433 Humboldt near Willow Creek; Trinity River 152 Comment
  CAS-BOT-BC308850  Erigeron glaucus W. R. Dudley 1899-6-1 s.n. Humboldt Eureka Peninsula Comment
  RSA246776  Erigeron glaucus R. F. Thorne, Percy C. Everett 1965-8-7 35220 Humboldt Samoa Peninsula. 3 Comment
  UC34630  Erigeron inornatus var. inornatus Chesnut and Drew 1888-7-19 Humboldt Pilot Ridge Comment
  CAS-BOT-BC214579  Erigeron philadelphicus W. R. Dudley 1899-6-19 s.n. Humboldt Scotia Comment
  HSC71370  Erigeron philadelphicus J. P. Smith 1973-5-26 6843 Humboldt Scotia Bluffs along the Eel River near Rio Dell Comment
  RSA121418  Erigeron philadelphicus H. S. Yates 1936-6-23 5855 Humboldt 2 miles S.E. of mouth of Mad River 30 Comment
  SEINET9351061  Erigeron philadelphicus Unknown 1935-5-22 Humboldt Fort Seward. Comment
  UCD20386  Erigeron philadelphicus K. Esau 1934-5-6 s.n. Humboldt Fort Seward. Comment
  UC169037  Erigeron philadelphicus var. philadelphicus Joseph P. Tracy 1912-7-4 3725 Humboldt near Hydesville; Northern Coast Region 60 Comment
  UC175188  Erigeron philadelphicus var. philadelphicus Joseph P. Tracy 1913-6-19 4212 Humboldt opposite, Dinsmore's Ranch Buck Mountain; Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  JEPS21936  Erigeron philadelphicus var. philadelphicus Joseph P. Tracy 1935-5-30 13920 Humboldt near Willow Creek; Trinity River Valley 152 Comment
  JEPS25617  Erigeron philadelphicus var. philadelphicus Rimo Bacigalupi 1959-7-7 7250 Humboldt immediately behind bluff headland (just n of road summit at this point); Cape Mendocino 30 Comment
  HSC74726  Eriogonum compositum Gail Newton 1981-7-23 2275 Humboldt Near Bug Creek Butte 1494 Comment
  HSC32329  Eriogonum compositum var. compositum D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5670 Humboldt Senteney Rock, a large barren Franciscan Rock along Swayback Ridge. Comment
  HSC97965  Eriogonum compositum var. compositum Cara Witte 2007-6-20 308 Humboldt Forest Service Road 4N32. 1 mile south of intersection with 4N32E. 1386 Comment
  CAS-BOT-BC259148  Eriogonum latifolium Marcus E. Jones 1931-7-12 28806 Humboldt Alton Comment
  RSA21010  Eriogonum latifolium Carl B. Wolf 1937-9-12 9331 Humboldt Clam Beach 8 Comment
  SD185287  Eriogonum latifolium G. K. Helmkamp, E. A. Helmkamp 2001-7-8 7016 Humboldt North coast: Samoa Peninsula, 2.6 mi S of CA-255 bridge across Humboldt Bay 14 Comment
  UC1478648  Eriogonum latifolium Robert F. Thorne 1974-7-29 45074 Humboldt Samoa Dunes Comment
  UC6344  Eriogonum latifolium H. N. Bolander 1866-1 6569 Humboldt Shelter Cove Comment
  HSC26917  Eriogonum latifolium Brad Klipfel 1973-7-30 220 Humboldt Samoa Rd. near Mad River Slough Comment
  RSA171075  Eriogonum latifolium Robert F. Thorne 1957-9-3 19014 Humboldt Little River Beach, few miles S of Trinidad. Comment
  RSA44506  Eriogonum luteolum H. M. Pollard 1948-8-7 s.n. Humboldt Near mouth of Camp Creek, near Orleans Comment
  CAS-BOT-BC261493  Eriogonum nudum var. nudum Henry M. Pollard 1946-8-28 s.n. Humboldt Near summit of Orleans Mt. 1828 Comment
  CAS-BOT-BC261494  Eriogonum nudum var. nudum Henry M. Pollard 1948-8-4 s.n. Humboldt Orleans Mt. Trail 1371 Comment
  HSC98531  Eriogonum nudum var. nudum Cara Witte 2007-7-8 445 Humboldt Board Camp Mountain. Trail 4E28. 1496 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
  RSA53802  Eriogonum nudum var. nudum H. M. Pollard 1945-8-26 s.n. Humboldt Between Orleans and Camp Creek. Klamath River Canyon. Comment
  CAS-BOT-BC261729  Eriogonum nudum var. oblongifolium Alice Eastwood 1923-8-16 12328 Humboldt Carlotta Comment
  RSA178550  Eriogonum nudum var. oblongifolium Joseph P. Tracy 1950-9-22 19373 Humboldt Slate Creek (Klamath River trip to Orleans.) Comment
  SD22498  Eriogonum nudum var. oblongifolium Susan G. Stokes 1932-7-12 Humboldt Near Garberville Comment
  UC77671  Eriogonum nudum var. oblongifolium J. W. Blankinship June 1893 Humboldt Comment
  UC55396  Eriogonum umbellatum var. argus Mrs. M. H. Manning 1900-1 Humboldt Hoopa Comment
  HSC99077  Eriogonum umbellatum var. goodmanii Cara Witte 2007-7-27 607 Humboldt Grouse Mountain area. Intersection of Forest Service Roads 4N32 and 4N32E. 1485 Comment
  JEPS56214  Eriogonum umbellatum var. nelsoniorum Joseph P. Tracy 1935-7-28 14328 Humboldt Head of Devil's Hole Trinity Summit Comment
  UC672898  Eriogonum umbellatum var. nelsoniorum Joseph P. Tracy 1935-7-28 14328 Humboldt Head of Devil's Hole Trinity Summit, Devil's Hole 1828 Comment
  HSC54754  Eriogonum umbellatum var. stellatum G. L. Clifton, Griswold 1979-7-26 10278 Humboldt Near Salmon Mtn., close to the town of Forks of Salmon 1935 Comment
  CAS-BOT-BC262322  Eriogonum vimineum F. D. Douthitt 1916-10-1 40 Humboldt Burned area - Snow Mt. Allotment Comment
  HSC40976  Eriophorum crinigerum J. O. Sawyer 1970-6-24 2216 Humboldt Big Hill Rd., E of Hoopa 1189 Comment
  CAS-BOT-BC301178  Eriophyllum lanatum var. arachnoideum Doris K. Kildale 1927-7-10 3726 Humboldt Gans Prairie - Bald Hills road Comment
  CAS-BOT-BC301688  Eriophyllum lanatum var. lanceolatum V. Rattan 1875-1-1 s.n. Humboldt Unspecified Comment
  HSC8496  Erodium cicutarium D. B. Bader 1963-3-1 30 Humboldt Second of the Clam Beach Lagoons, W of Hwy. 101. Comment
  HSC79415  Erodium cicutarium Kenneth Clark 1980-3-1 514 Humboldt Hillslope due N from Dead Man's Gulch, near access trail 122 Comment
  HSC87150  Erysimum capitatum Pat Daly, Rudy Galindo 1988-4-30 106 Humboldt Titlow Rd., 1.3 mi. from Hwy. 299 1000 Comment
  HSC19420  Erysimum capitatum var. capitatum J. O. Sawyer 1968-9-11 731 Humboldt 1768 Comment
  HSC44569  Erysimum capitatum var. capitatum Brad Klipfel 1973-7-15 187 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC6759  Erysimum capitatum var. capitatum Francis Winter 1960-4-24 Humboldt 2 mi. NW of Sugar Pine Mtn., hilltop 915 Comment
  CAS-BOT-BC383042  Erythranthe grandis David B. Lowry 2005-5-14 BSR Humboldt Along Blue Slide Road, just north of the intersection with Bluff road 17 Comment
  UC1197644  Erythronium californicum Joseph P. Tracy 1913-6-17 4184 Humboldt near summit; Northern Coast Ranges, Buck Mountain 1676 Comment
  HSC15489  Erythronium citrinum var. citrinum J. R. Eichelberger 1964-4-10 40 Humboldt 4 mi. S of Weitchpec on Hwy. 96 Comment
  HSC48399  Erythronium grandiflorum subsp. grandiflorum Brad Klipfel 1973-6-10 86 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC23676  Eschscholzia californica Tim Baroni 1971-7-6 111 Humboldt 1 mi. S of Ferndale on the Mattole Rd. Comment
  HSC45483  Eschscholzia californica Maralyn O'Meara 1974-7-11 534 Humboldt Kneeland, Barry Ridge Comment
  UC1199298  Eucephalus tomentellus Joseph P. Tracy 1930-7-19 9083 Humboldt near McKay Camp; South Fork Mountain 1676 Comment
  UC552243  Euchiton gymnocephalus Joseph P. Tracy 1932-8-13 10349 Humboldt Trinidad 3 Comment
  CAS-BOT-BC310487  Euchiton sphaericus Henry M. Pollard 1947-8-30 s.n. Humboldt North Road along Klamath between Van Fleet ranch and Redcap Creek, nr. Orleans Comment
  CAS-BOT-BC310495  Euchiton sphaericus John Thomas Howell 1936-8-29 12888 Humboldt Eel River 16 miles n. of Garberville Comment
  CAS-BOT-BC206803  Euonymus occidentalis Doris K. Kildale 1926-7-22 2417 Humboldt N ridge near Metropolitan, near Canyon Park, Eel River Valley Comment
  CAS-BOT-BC206804  Euonymus occidentalis John Thomas Howell 1936-8-29 12887 Humboldt Eel River 16 miles N of Garberville Comment
  HSC102197  Euonymus occidentalis var. occidentalis M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-4 1111 Humboldt Along trail (abandoned Road 6E74) from Andy's Camp to Patterson Meadows 1563 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
  JEPS52406  Euphorbia peplus Joseph P. Tracy 1926-5-15 7473 Humboldt Eureka; Northern Coast Ranges 0 Comment
  CDA17336  Euphorbia virgata B. Freeman 2004-8-18 PDR 1403789 Humboldt Klamath Ranges; Mouth of Camp Creek, Hwy 96, Orleans. 0 Comment
  JEPS31926  Eurybia radulina Joseph P. Tracy 1921-10-16 5973 Humboldt near Willow Creek; Northern Coast Ranges, Trinity River Valley 152 Comment
  CAS-BOT-BC310681  Euthamia occidentalis Frank W. Peirson 1926-7-13 7062 Humboldt Mad River, vicinity of Blue Lake Comment
  CAS-BOT-BC458291  Euthamia occidentalis Carl D. Duncan 1920-9-22 s.n. Humboldt Bank of Trinity River, Hoopa Valley Comment
  SEINET3244015  Euthamia occidentalis S. K. Harris, Charlotte Wilder 1938-1 879 Humboldt Bars of the Van Dusen River, above Blue Slide. Comment
  UC581767  Euthamia occidentalis Joseph P. Tracy 1931-9-7 9636 Humboldt Northern Coast Ranges, Trinity River Valley; Lack Pond, opposite mouth of Willow Creek 152 Comment
  HSC35971  Fallopia convolvulus Thomas W. Nelson, J. O. Sawyer 1975-9-25 2024 Humboldt Beside Hwy. 101 at 11th St. bridge Comment
  HSC98939  Festuca californica var. californica Cara Witte 2008-7-14 901 Humboldt White Oak Opening. Along Kinsey Ridge. 1257 Comment
  CAS-BOT-BC282499  Festuca elmeri Joseph P. Tracy; H. E. Parks 1934-6-27 11045 Humboldt Horse Mountain 1524 Comment
  UC552675  Festuca elmeri Joseph P. Tracy 1935-5-25 13877 Humboldt Fort Seward 106 Comment
  CAS-BOT-BC278422  Festuca idahoensis Joseph P. Tracy 1930-6-8 8729 Humboldt Northern Coast Ranges. Kneeland Prairie 762 Comment
  HSC76542  Festuca idahoensis Denis Kearns 1981-7-6 82 Humboldt Near Mosquito Lake 1256 Comment
  HSC70396  Festuca occidentalis M. A. Baker 1980-6-7 1808 Humboldt Near Brush Mtn. 1128 Comment
  UC525637  Festuca occidentalis Joseph P. Tracy Jul 16 1930-Jul 19 1930 9097 Humboldt near McKay Camp; Northern Coast Ranges, South Fork Mountain 1676 Comment
  BLMAR39  Festuca perennis Brad Barr 39 Humboldt King range, hidden valley enclosure Comment
  CAS-BOT-BC278972  Festuca rubra W. R. Dudley 1893-6-20 s.n. Humboldt South Fork of Eel River Comment
  UC1145206  Festuca subuliflora Joseph P. Tracy 1948-6-13 18041 Humboldt 7 mi nw Blocksburg; Larrabee Creek 304 Comment
  SEINET10559495  Festuca subuliflora Joseph P. Tracy 1901-6-10 Tracy 1134 Humboldt At Eureka, wooded hillside. 0 Comment
  CHSC19732  Fragaria chiloensis D. J. Jager 1965-5-12 66 Humboldt Ca. 1/2 mi. north of Trinidad on bluff above ocean. 45 Comment
  HSC18616  Fragaria chiloensis A. Sylvester, R. Spellenberg, D. Sutherland 1966-3-26 1355 Humboldt Near Beachcross 5 mi. W of Ferndale on coast Comment
  HSC72767  Fragaria chiloensis Therese Glowacki 1981-4-12 20 Humboldt .6 km. W of Centerville Rd., 1.6 km. S of Centerville, 9.6 km. SW of Ferndale 4 Comment
  HSC18394  Frangula californica P. W. Shields May 1955 Humboldt 2 mi N of Willow Creek Comment
  HSC18399  Frangula californica Dale Thornburg 1968-11-10 Humboldt Hogback Ridge NE of Ammon Guard Station Comment
  CAS-BOT-BC52737  Frangula californica subsp. californica Carl B. Wolf 1927-8-30 1226 Humboldt 2 mi. s. of Petrolia on the Matole River, near point where road crosses river. Comment
  CAS-BOT-BC52740  Frangula californica subsp. californica Doris K. Kildale 1927-5-15 3294 Humboldt Petrolia - Mattole River Valley Comment
  CAS-BOT-BC53406  Frangula californica subsp. occidentalis John Thomas Howell 1937-7-31 13717 Humboldt 5 miles east of Berry Summit Comment
  HSC49623  Frangula purshiana R. York 1979-5-15 290 Humboldt Along trail to College Cove 1.0 mi N of Trinidad Comment
  UCD112819  Frangula purshiana Linda M. Barker 1976-7-5 1648 Humboldt Lanphere-Christensen Dunes 3 miles west of Arcata. Comment
  SBBG4629  Frangula purshiana subsp. purshiana M. J. Cody 1938-7-10 Humboldt near Trinidad Comment
  SBBG4630  Frangula purshiana subsp. purshiana M. J. Cody 1938-7-10 Humboldt near Trinidad Comment
  SEINET200756  Frasera speciosa Joseph P. Tracy 1917-9-2 4851 Humboldt Grouse Mt. 1524 Comment
  NY42920  Fraxinus latifolia J. B. Walker 1995-4-26 1387 Humboldt Six Rivers National Forest, Hwy 36, 2km W of Cobbs 800 Comment
  UC1005680  Fritillaria affinis Frank W. Gould 1939-5-30 830 Humboldt Horse Mountain, about half-way up mountain road Horse Mountain 1000 Comment
  UC1197634  Fritillaria affinis Joseph P. Tracy 1919-4-27 5127 Humboldt Ocean Beach at Humboldt Bay Ocean Beach; Northern Coast Region, Humboldt Bay, Ocean Beach Comment
  SEINET200745  Fritillaria lanceolata Joseph P. Tracy 1940-5-17 16549 Humboldt McClellan Mountain. 762 Comment
  HSC38706  Fritillaria purdyi J. P. Smith 1976-5-29 8816 Humboldt Horse Mtn. 1402 Comment
  CDA3559  Fumaria capreolata Gordon Leppig, Sylvia Leppig 2000-12-7 1523 Humboldt 7th and I Street just west of Post Office, Arcata. Comment
  UC176062  Galium ambiguum subsp. ambiguum Joseph P. Tracy 1912-7-31 3913 Humboldt near summit Northern Coast Ranges, Buck Mountain 1676 Comment
  UC602525  Galium ambiguum var. siskiyouense Joseph P. Tracy 1925-5-30 7026 Humboldt Laribee Valley Northern Coast Ranges 731 Comment
  BLMAR274  Galium aparine Jennifer Anthony-Wheeler 1999-7-30 274 Humboldt Lacks Creek 1219 Comment
  UC1196099  Galium bifolium Joseph P. Tracy 1939-7-9 16331 Humboldt Snow Camp 1402 Comment
  JEPS52903  Galium californicum subsp. californicum Lauramay T. Dempster and G. L. Stebbins 1963-7-9 3848 Humboldt 2.1 mi w Bridgeville (on road to Eureka, along river, steep s-facing slope); Van Duzen River Comment
  JEPS52838  Galium muricatum Lauramay T. Dempster and G. L. Stebbins 1963-7-10 3860 Humboldt 2.3 mi s Weott; Avenue of The Giants 60 Comment
  JEPS52848  Galium muricatum Lauramay T. Dempster and G. L. Stebbins 1963-7-10 3858 Humboldt 6.8 mi w mouth of Bull Creek; Bull Creek (settlement) 91 Comment
  RSA245002  Galium nuttallii William J. Ferlatte, B. D. Rogers 1966-6-15 2092 Humboldt Near Bridgeville. Comment
  UC175682  Galium porrigens Joseph P. Tracy 1912-7-26 3863 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  UC1192013  Galium trifidum Malcolm A. Nobs and S. Galen Smith 1949-8-3 1160 Humboldt 1 mi s Fields Landing (borders of irrigation ditch); Eel River Valley Comment
  UC1196084  Galium trifidum var. pusillum Joseph P. Tracy 1935-7-27 14303 1/2 Humboldt McKay Prairie Trinity Summit 1584 Comment
  HSC40955  Galium triflorum Linda M. Barker 1976-7-5 1649 Humboldt 3 mi. W of Arcata. Comment
  JEPS6536  Galium triflorum W. L. Jepson 1902-6 1957 Humboldt Redwood Creek Comment
  UC1199115  Gamochaeta coarctata Joseph P. Tracy 1927-7-17 8264 Humboldt Butler Valley 152 Comment
  HSC72815  Garrya buxifolia Gail Newton 1980-7-24 1774 Humboldt Near Somes Mtn. 1615 Comment
  HSC43844  Garrya elliptica Maralyn O'Meara 1974-5-18 499 Humboldt Fisher Rd. near Carlotta Comment
  HSC82186  Garrya fremontii Thomas W. Nelson 1977-6-15 3444 Humboldt Along old road to ski area 1372 Comment
  RSA183630  Garrya fremontii D. E. Anderson 1965-4-24 3537 Humboldt Along Titlow Hill Road, ca. two miles from its junction with Highway 299. Comment
  HSC73068  Gaultheria ovatifolia M. A. Baker 1980-6-16 1953 Humboldt Near Onion Mtn. 1280 Comment
  UC1120968  Gaultheria shallon A. E. Wieslander 1931-5-21 211 Humboldt on ridge near Kneeland Comment
  SEINET11974903  Gaultheria shallon Unknown 1936-1 13377 Humboldt near Fieldsfandring Comment
  UCSC000552  Gaultheria shallon Dorothy Tebbe 1929-6-12 25 Humboldt woods along coast just east of Eureka Comment
  HSC55107  Gayophytum diffusum subsp. parviflorum G. L. Clifton 1979-7-31 11848 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  HSC75456  Gayophytum diffusum subsp. parviflorum J. O. Sawyer 1980-7-18 3600 Humboldt North Trinity Mountain Research Natural Area, north of Mill Creek Lake to Red Cap Hole. Comment
  HSC99578  Gayophytum diffusum subsp. parviflorum K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-8-10 243 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
  UC505127  Gayophytum diffusum subsp. parviflorum Joseph P. Tracy Jul 16 1930-Jul 19 1930 9050 Humboldt along summit near Blake Lookout; Northern Coast Ranges, South Fork Mountain 1737 Comment
  UC202459  Gayophytum heterozygum Joseph P. Tracy 1919-9-18 5248 Humboldt Trinity Summit Northern Coast Ranges 1524 Comment
  UC562353  Gayophytum heterozygum Joseph P. Tracy 1933-8-30 13045 Humboldt Grouse Mountain North Coast Ranges 1524 Comment
  UC1196958  Gayophytum humile Joseph P. Tracy 1933-7-26 12918 Humboldt Grouse Mountain 1524 Comment
  RSA782434  Genista monspessulana R. W. Spjut, Paul Burchstead 2008-6-14 16348 Humboldt North Coast Ranges. West side of Hwy. 101 between Piercy and Willits 259 Comment
  JEPS76806  Gentiana plurisetosa Theodore F. Niehaus 1972-8-29 935 Humboldt 0.25 to 0.50 e on right side (s) Trinity Summit Station old horse trail (directly e from crossing of new forest road at Crogan Creek, a tributary of upper Tish-Tang a Tang Creek); Salmon Mts. 1706 Comment
  OBI14114  Gentiana sceptrum Carl B. Wolf 1937-9-12 9328 Humboldt Big Lagoon, S side along Redwood hwy 6 Comment
  UC562302  Gentiana sceptrum Joseph P. Tracy 1927-8-22 8338 Humboldt near High Prairie; Northern Coast Ranges, Bald Mountain 1066 Comment
  UCSB26680  Gentiana sceptrum Havlik, Neil 1968-8-21 Humboldt south end of Big Lagoon; north of Trinidad 1 Comment
  UC213322  Gentianopsis simplex Joseph P. Tracy 1919-9-22 5275 Humboldt Trinity Summit Northern Coast Ranges, Trinity Summit 1828 Comment
  HSC23999  Geranium bicknellii Tim Baroni 1971-7-6 125 Humboldt 15 mi. S of Ferndale on Mattole Rd. Comment
  RSA0028176  Geranium bicknellii var. bicknellii D. E. Anderson 1963-5-25 2497 Humboldt About 4 miles east of Petrolia. Comment
  HSC7248  Geranium molle J. E. Lankila 1962-5-14 22 Humboldt W bank of river at Fernbridge Comment
  JEPS61438  Geranium oreganum Milo S. Baker 1923-7-20 30 Humboldt Head of Yager Creek Comment
  UC164808  Geranium oreganum Joseph P. Tracy 1911-7-4 3287 Humboldt near Willow Creek (w side of Trinity River); Northern Coast Ranges, Trinity River 243 Comment
  HSC63005  Geranium retrorsum M. Dean Griswold Jr. 1979-5-30 95 Humboldt N side of Samoa Blvd. Comment
  BLMAR195  Gilia capitata subsp. capitata Donald Hazlett 1994-6-7 195 Humboldt King range, near horse Mt. Ridge rd 670 Comment
  HSC40301  Gilia capitata subsp. capitata Thomas W. Nelson, Jane P. Nelson 1976-7-1 2900 Humboldt Along ridge N of Bear Creek 1463 Comment
  RSA469341  Gilia capitata subsp. pacifica J. P. Smith 1973-5-26 6816 Humboldt Scotia Bluffs along the Eel River near Rio Dell. Comment
  UC1197926  Gilia capitata subsp. pacifica Joseph P. Tracy 1930-5-25 8725 Humboldt Bridgeville 198 Comment
  UC427877  Gilia capitata subsp. pacifica H. E. Parks, J. P. Tracy 1930-5-25 793 Humboldt near Bridgeville; near Bridgeville 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
  CAS-BOT-BC218432  Glehnia littoralis subsp. leiocarpa Milo S. Baker 1927-8-16 2449 a Humboldt Near beach, Samoa Comment
  HSC62745  Glehnia littoralis subsp. leiocarpa J. M. DiTomaso 1979-5-20 1050 Humboldt Sand at Big Lagoon Park, 8 mi. N of Trinidad Comment
  RSA80349  Glehnia littoralis subsp. leiocarpa F. W. Peirson 1923-7-11 3946 Humboldt 18 miles north of Eureka Comment
  HSC10063  Glyceria elata D. E. Anderson 1965-9-5 4092 Humboldt Along Mad River, 3 mi. S of Blue Lake Comment
  HSC74756  Glyceria elata Gail Newton 1981-8-6 2402 Humboldt Near Humbug Creek 1256 Comment
  HSC70848  Glyceria striata M. A. Baker 1980-6-7 1825 Humboldt Near Ammon Creek. 732 Comment
  JEPS20478  Gnaphalium palustre Joseph P. Tracy 1932-7-13 10513 Humboldt open places at Corral Prairie (in low wet ground); Trinity Summit, Corral Prairie 1584 Comment
  POM257415  Gnaphalium palustre H. E. Parks, S. T. Parks 1937-1 24026 Humboldt Spruce Cove, Trinidad. Comment
  UC1199345  Gnaphalium palustre Joseph P. Tracy 1930-7-17 9005 Humboldt meadow McKay Camp; South Fork Mountain, McKay Camp 1676 Comment
  POM261473  Gnaphalium sphaericum Joseph P. Tracy 1940-8-11 16694 Humboldt Trinity River Valley near Raccoon Creek. 152 Comment
  HSC54861  Goodyera oblongifolia G. L. Clifton, Griswold 1979-7-25 10762 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1814 Comment
  UC1196372  Goodyera oblongifolia Joseph P. Tracy 1932-7-17 10660 Humboldt near Corral Prairie (Trinity Summit); Trinity Summit 1584 Comment
  UC1196437  Goodyera oblongifolia J. P. Tracy 1900-7-4 879 Humboldt opposite Eureka (Ocean Beach at Samoa); Samoa, Ocean Beach Comment
  UCD138959  Goodyera oblongifolia Linda M. Barker 1976-8-24 1679 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  CAS-BOT-BC304737  Grindelia hirsutula Lester Rowntree 1937-8-15 s.n. Humboldt Big Lagoon Comment
  CAS-BOT-BC304762  Grindelia hirsutula Carl B. Wolf 1937-9-9 9305 Humboldt Coast, 2 mi. So. of Cape Mendocino 6 Comment
  HSC2216  Grindelia hirsutula J. T. Howell 1937-7-31 13720 Humboldt Humboldt Bay at Arcata Comment
  HSC5697  Grindelia hirsutula D. E. Anderson 1963-5-25 2483 Humboldt 2-3 mi. N of Capetown 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
  UC201390  Guillenia lasiophylla Joseph P. Tracy 1918-5-1 4907 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  UC525563  Hackelia californica Joseph P. Tracy Jul 16 1930-Jul 19 1930 9024 Humboldt in forest near McKay Camp; Northern Coast Ranges, South Fork Mountain 1676 Comment
  HSC101976  Hackelia micrantha M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-12 873 Humboldt Patterson Meadows 1566 Comment
  JEPS67933  Hackelia micrantha W. L. Jepson 1902-7-16 2041 Humboldt Trinity Summit 2133 Comment
  JEPS55562  Hackelia micrantha Hilda Grinnell 1932-7-12 16 Humboldt slope below McKay Camp; South Fork Mountain Comment
  JEPS79901  Hackelia setosa Joseph P. Tracy 1937-7-24 15510 Humboldt 2 mi se of Devil's Hole; Trinity Summit 1584 Comment
  CAS-BOT-BC508211  Hastingsia alba Joseph P. Tracy 1935-7-24 14195 Humboldt Trinity Summit, moist rocky exposed places near ranger station 1828 Comment
  HSC91596  Hedera helix E. Mackey 1986-10-7 Humboldt Patrick's Point State Park, near old road in dune area Comment
  UC630631  Hedera helix Joseph P. Tracy 1939-10-15 16519 Humboldt Van Duzen River Blue Slide; , Blue Slide 91 Comment
  HSC74414  Helenium bigelovii Gail Newton 1980-8-10 2032 Humboldt Near Blake Mtn. 1707 Comment
  HSC25071  Heliotropium curassavicum var. oculatum R. W. Becking 1970-10-3 Humboldt Stone Lagoon near Orick Comment
  HSC75949  Hemizonella minima Overton, Butler 1979-7-24 9709 Humboldt Near Black Rock, close to the town of Willow Creek. 1554 Comment
  UC302294  Hemizonella minima Joseph P. Tracy 1926-6-27 7684 Humboldt Horse Mountain Northern Coast Ranges, Horse Mountain 1524 Comment
  UC495626  Hemizonia congesta subsp. clevelandii Joseph P. Tracy 1930-9-1 9174 Humboldt Miranda Northern Coast Ranges, South Fork of Eel River 121 Comment
  HSC71740  Hemizonia congesta subsp. tracyi M. A. Baker 1980-6-26 2420 Humboldt Near Sims Creek 610 Comment
  JEPS82128  Hemizonia congesta subsp. tracyi Rimo Bacigalupi 1959-7-7 7249 Humboldt immediately behind headland of Cape Mendocino (steep grade of coast road, just s of road summit at this point) 30 Comment
  UC1245364  Hemizonia congesta subsp. tracyi Joseph T. Gregory 1932-6-19 184 Humboldt Buck Mt. Comment
  UC1281660  Hemizonia congesta subsp. tracyi Richard Spellenberg 1965-6-14 1129 Humboldt 6 mi se Kneeland Comment
  HSC90776  Hesperevax sparsiflora Peter Sorensen 1976-8-16 Humboldt Woodley Island Comment
  HSC5311  Heterotheca oregona Paul Shields Aug 1955 Humboldt 1 mi. N of Weott Comment
  CAS-BOT-BC311079  Heterotheca oregona var. rudis Frank W. Peirson 1926-7-13 7051 Humboldt Mad River, vicinity of Blue Lake Comment
  HSC97539  Heterotheca oregona var. rudis Ivy Watson 2008-9-17 17 Humboldt Mad River Park on West End Rd. near pumping station 8 Comment
  UC1222391  Heuchera merriamii Joseph P. Tracy July 1935 14172 Humboldt summit near Rangers Lookout at head of Croghan Hole; Trinity Summit 1828 Comment
  HSC100650  Heuchera micrantha Carl C. Marshall Jun 1887 407 Humboldt Garberville. Comment
  HSC44341  Heuchera micrantha Brad Klipfel 1975-6-17 680 Humboldt Horse Mtn. Comment
  HSC81906  Heuchera rubescens Thomas W. Nelson 1979-7-11 4991 Humboldt N Trinity Mtn. and ridge to E. 1829 Comment
  HSC41261  Hieracium albiflorum Brad Klipfel 1974-7-23 453 Humboldt Horse Mountain, NW from the towers Comment
  HSC57336  Hieracium albiflorum Overton, Butler 1979-7-26 10003 Humboldt Near Willow Creek 1341 Comment
  HSC81659  Hieracium albiflorum Thomas W. Nelson, Jane P. Nelson 1980-7-13 6066 Humboldt Along the road from Dinsmore to Anderson Ford-McKeown Ranch Rd. 762 Comment
  HSC99543  Hieracium albiflorum K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-8-10 208 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  SEINET11262552  Hieracium albiflorum D. E. Anderson 1972-6-20 5745 Humboldt Along the Redwood Valley-Hoopa Rd. east of the summit.; 0 Comment
  HSC100438  Hieracium albiflorum Carl C. Marshall Jun 1886 259 Humboldt Near Hoopa. Comment
  CAS-BOT-BC318532  Hieracium greenei Joseph P. Tracy 1935-7-30 14358 Humboldt Salmon Summit 1767 Comment
  UC582410  Hieracium greenei Joseph P. Tracy 1935-7-29 14340 Humboldt near Ranger Station; Trinity Summit 1828 Comment
  HSC98950  Hieracium greenei Cara Witte 2007-7-9 466 Humboldt Grouse Mountain Lookout. Forest Service Road 4N70. 1641 Comment
  UC1199468  Hieracium scouleri Joseph P. Tracy 1937-7-29 15592 Humboldt w slope near the top South Fork Mountian (at Hyampom Trail); South Fork Mountain, Hyampom Trail 1676 Comment
  CHSC10109  Hierochloe occidentalis J. W. Johnson 1962-3-14 1120 Humboldt Woods at the side of Miller Lane, Lanphere Farm, Samoa Penninsula. Comment
  UCD150387  Hippuris vulgaris William Anderson 1965-6-26 s.n. Humboldt Mad River Slough. Comment
  HSC59570  Hippuris vulgaris Rick Lundquist 1979-5-18 98 Humboldt Clam Beach Ponds 0 Comment
  RSA0016043  Hippuris vulgaris Carl B. Wolf 1939-7-6 9517 Humboldt Dry Lagoon. 2 Comment
  HSC37926  Hirschfeldia incana Peter Sorensen 1976-5-28 Humboldt N Spit Comment
  HSC6593  Hirschfeldia incana P. W. Shields 1955-9-29 Humboldt 0.5 mi. S of Fernbridge Comment
  HSC59684  Hirschfeldia incana George Kirn 1977-10-15 Humboldt Eureka, Q and 3rd St. 12 Comment
  CHSC2150  Holcus lanatus M. Anthony 1960-5-1 Humboldt Comment
  HSC10132  Holcus lanatus J. R. Eichelberger 1964-5-13 83 Humboldt 1/4 mile from U.S. 101 on the N side of the Mad River. Comment
  HSC26537  Holcus lanatus J. P. Smith 1971-9-9 5040 Humboldt Mad River above the Fish Hatchery. Comment
  HSC38837  Holcus lanatus R. Sutherland 1976-8-13 3 .13876 Humboldt Just above Whittemore Grove. 168 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
  POM232313  Holcus lanatus I. L. Wiggins 1930-6-25 4614 Humboldt Sand dunes 2 miles north of Samoa. Comment
  SEINET200832 Image available Holcus lanatus J. P. Tracy 1901-7-24 1218 Humboldt Immediate vicinity of Eureka 0 Comment
  UC38605  Holcus lanatus Joseph Burtt Davy and Walter C. Blasdale 1899-6-16 5558 Humboldt Scotia Comment
  UCR122375  Holcus lanatus George K. Helmkamp, E. A. Helmkamp 2001-7-8 7009 Humboldt North Coast, north spit of Samoa Peninsula, 0.5 mi north of CA Hwy 255 bridge over Humboldt Bay 6 Comment
  BLMAR150  Holodiscus discolor Donald Hazlett 1994-6-7 150 Humboldt King range, near horse Mt. Ridge rd 670 Comment
  CAS-BOT-BC149906  Holodiscus discolor Alice Eastwood 1921-7-21 10651 Humboldt Carlotta Comment
  HSC43843  Holodiscus discolor Maralyn O'Meara 1974-5-18 497 Humboldt Fisher Rd. near Carlotta Comment
  HSC74749  Holodiscus discolor Gail Newton 1981-7-22 2261 Humboldt Near Bug Creek 1375 Comment
  HSC79463  Holodiscus discolor Kenneth Clark 1980-6-14 663 Humboldt Along access trail to Dead Man's Gulch. 107 Comment
  UC154228  Holodiscus discolor Joseph P. Tracy 1908-6 2927 Humboldt opposite of Buck Mountain (Northern Coast Ranges, Valley of Van Duzen River); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  HSC37949  Hordeum brachyantherum Peter Sorensen 1976-6-16 Humboldt Woodley Island Comment
  CAS-BOT-BC284690  Hordeum jubatum Joseph P. Tracy 1927-7-16 8249 Humboldt Northern Coast Ranges. Around Humboldt Bay. Mouth of Elk River 3 Comment
  SEINET200739  Horkelia californica subsp. californica J. P. Tracy 1906-6-24 2503 Humboldt Region about Humboldt Bay S slope of Humboldt Hill 0 Comment
  HSC96008  Horkelia tridentata Juha Pykala, D. H. Norris 1987-6-11 1647 Humboldt Hoopa Indian Reservation, Big Hill Rd. 1 mi. SE of Big Hill 869 Comment
  UC1198720  Horkelia tridentata subsp. flavescens Joseph P. Tracy 1912-7-31 3935 Humboldt near summit (Buck Mountain); Northern Coast Ranges 1676 Comment
  CDA20012  Horkelia tridentata subsp. flavescens P. Haggard 2002-8-5 PDR P 070940 Humboldt Northwestern California; USFS property, vicinity of Blue Lake. 0 Comment
  SBBG3396  Hosackia crassifolia var. crassifolia H. and M. Dearing 1933-5-21 895 Humboldt 4 mi S of Orick Comment
  HSC41272  Hosackia oblongifolia Brad Klipfel 1974-6-25 418 Humboldt Horse Mtn., along the creek just above Horse Mtn. mine. Comment
  HSC57352  Hosackia oblongifolia var. oblongifolia Overton, Butler 1979-7-26 10044 Humboldt Near White Rock Spring, close to the town of Willow Creek 1554 Comment
  UC1239768  Hydrophyllum tenuipes Joseph P. Tracy 1937-7-2 15403 Humboldt head of Little Hors-Linto Creek; Trinity Summit 1371 Comment
  UC24091  Hydrophyllum tenuipes W. C. Blasdale 1896-6-3 Humboldt Blue Lake Comment
  UC906638  Hydrophyllum tenuipes H. E. Parks and Joseph P. Tracy 1949-6-25 11674 Humboldt Box Camp; Trinity Summit 1463 Comment
  HSC53943  Hypericum anagalloides Griswold, Butler 1979-7-11 6982 Humboldt Near Snow Camp Lake, close to the town of Willow Creek. 1393 Comment
  UC668261  Hypericum anagalloides Joseph P. Tracy 1933-8-6 12945 Humboldt French Camp Ridge 1066 Comment
  CAS-BOT-BC400793  Hypericum anagalloides C. L. Hitchcock; J. S. Martin 1939-7-14 5442 Humboldt 7 miles east of Shelter Cove 243 Comment
  CAS-BOT-BC400794  Hypericum anagalloides Doris K. Kildale 1928-7-29 5933 Humboldt Kinman Pond. Bear River Ridge Comment
  SEINET10720053  Hypericum anagalloides Lincoln Constance 1934-6-25 Constance 922 Humboldt Bull Creek Region. Engelwood, 4 miles N of Dyerville and north of the boundary of Humboldt Redeood Park on Redwood Highway. Comment
  SEINET10720071  Hypericum anagalloides Charles L. Hitchcock, James S. Martin 1939-7-14 Hitchcock 5442 Humboldt Woods 7 miles east of Shelter Grove. 244 Comment
  UC502949  Hypericum anagalloides Joseph P. Tracy Jul 16 1930-Jul 19 1930 8978 Humboldt S. Fork Mt., McKay Camp Northern Coast Ranges, S. Fork Mt., McKay Camp 1676 Comment
  UC1198406  Hypericum formosum var. scouleri Joseph P. Tracy 1932-9-16 10799 Humboldt Dow's Prairie Northern Coast Ranges, Dow's Prairie 60 Comment
  UC183760  Hypericum formosum var. scouleri Joseph P. Tracy 1913-7 4362 Humboldt Patrick's Point Northern Coast Ranges, Patrick's Point 30 Comment
  SD51268  Hypericum perforatum Darley F. Howe 1961-8-2 3118 Humboldt 7.7 miles east of Orick on Bald Mountain road. 609 Comment
  SD93061  Hypericum perforatum W. Bertsch 1953-7-30 225 Humboldt Highway 101 at Dyerville. 60 Comment
  UC420746  Hypericum perforatum Harley P. Chandler June, 1901 1493 Humboldt Klamath R. North Coast Ranges, Klamath R. 426 Comment
  UC668257  Hypericum perforatum Joseph P. Tracy 1935-7-27 14274 Humboldt along trail Corral Prairie; Trinity Summit, Corral Prairie 1584 Comment
  HSC78973  Hypochaeris glabra L. P. Janeway, Paul Wilson 1984-5-7 760 Humboldt N Spit of Humboldt Bay, on BLM lands near the Coast Guard Station 3 Comment
  CAS-BOT-BC311436  Hypochaeris radicata Ashley C. Browne 1936-6-10 s.n. Humboldt Patrick's Point State Park Comment
  UC1199471  Hypochaeris radicata Joseph P. Tracy 1921-7-10 5847 Humboldt Big Lagoon Northern Coast Region 6 Comment
  UC166805  Hypochaeris radicata J. P. Tracy 1900-7-22 906 Humboldt immediate vicinity Eureka 0 Comment
  HSC27043  Hypochaeris radicata Brad Klipfel 1973-8-23 285 Humboldt Near Lazy J Ranch on Fickle Hill Rd. Comment
  HSC90684  Hypochaeris radicata Gail Newton 1982-5-1 2488 Humboldt Eureka, Elk River Wildlife Area Comment
  SD58504  Iliamna latibracteata Joseph P. Tracy 1949-9-1 18525 Humboldt Willow Creek Canyon, along Trinity Highway. 762 Comment
  UCR39771  Ipomopsis aggregata subsp. formosissima D. K. Imper 1983-7-7 s.n. Humboldt In Groves Prairie. 1300 Comment
  RSA78186  Iris Rimo C. Bacigalupi 3414 Humboldt Under Pseudotsuga and Abies concolor, about Snow Camp meadow, ridge between Mad River and Redwood Creek (Bald Mountain) 1433 Comment
  HSC33061  Iris douglasiana Thomas W. Nelson 1974-5-7 1240 Humboldt Beside the old Kneeland Rd. Comment
  HSC95676  Iris douglasiana Steven Lee 2004-4-11 12 Humboldt Westhaven offramp on Hwy. 101, N up Scenic Drive, on Houda Pt. Comment
  RSA136681  Iris douglasiana Lee W. Lenz, E. K. Balls 1951-5-8 16508 Humboldt 14.7 miles north of Trinidad, Highway 101 6 Comment
  UC1174761  Iris douglasiana L. W. Lenz and E. K. Balls 1951-5-8 16508 Humboldt 14.7 mi n Trinidad (Hwy 101) 6 Comment
  UC667112  Iris douglasiana Joseph P. Tracy 1935-6-23 14001 Humboldt e of Orick (Bald Hills Road) 609 Comment
  JEPS17226  Iris macrosiphon Joseph P. Tracy 1927-6-12 8138 Humboldt Horse Mountain; Northern Coast Ranges 1524 Comment
  RSA135939  Iris purdyi Lee W. Lenz, E. K. Balls 1951-5-9 16513 Humboldt 5 miles south of Richardsons Grove, Highway 101 Comment
  HSC67179  Iris tenuissima Thomas W. Nelson, James Nelson 1980-6-10 5430 Humboldt Along E side of Red Mtn. 1372 Comment
  HSC73242  Iris tenuissima M. A. Baker 1980-5-18 1339 Humboldt Near Black Mtn. 792 Comment
  HSC79260  Iris tenuissima T. Jimerson, J. Pageau 1979-5-1 439 Humboldt 0.2 mi. S of Hwy. 96 on Ishi Pishi Rd., Orleans Comment
  RSA246917  Isolepis cernua Robert F. Thorne, Percy C. Everett 1965-8-7 35215 Humboldt Samoa Peninsula: near sea level Comment
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Sep 12 2018
  UCD49898  Isolepis cernua Linda M. Barker 1976-6-22 1618 Humboldt Coastal forest and dunes 3 miles west of Arcata, Humboldt Co., California. Comment
  UC1196176  Isopyrum stipitatum Joseph P. Tracy 1922-5-29 6068 Humboldt valley at head of South Yager Creek; Northern Coast Ranges, head of South Yager Creek 762 Comment
  CDA8060  Jaumea carnosa T. C. Fuller 1961-9-27 7044 Humboldt West of Highway 101, 1 mile north of Indianola Road, 5 miles north of Eureka. 0 Comment
  HSC76533  Juncus balticus subsp. ater Teresa Prendusi 1981-7-23 340 Humboldt Near Black Mtn. 890 Comment
  HSC67959  Juncus bolanderi Steve Selva, J. P. Smith 1970-6-14 3524 Humboldt Along Hwy. 96 at Whitmore Creek 152 Comment
  UCD170802  Juncus breweri Gordon Leppig 1998-6-14 833 Humboldt Mackerricher State Park. Ingelnook Fen just north of Fen. 6 Comment
  HSC77350  Juncus covillei L. P. Janeway 1982-6-20 16 Humboldt Near gutter near underdrain of FS Rd. 6N36, 30 m N of Titlow Hill Rd. towards Horse Mtn. 1384 Comment
  RSA53853  Juncus effusus subsp. pacificus Henry M. Pollard 1945-8-24 s.n. Humboldt Betw Orleans and Camp Creek Klamath River Canyon. Comment
  POM87662  Juncus ensifolius Le Roy Abrams, Rimo C. Bacigalupi 8286 Humboldt Big Lagoon. South of Orick. Comment
  UC1152096  Juncus ensifolius Joseph P. Tracy 1937-8-7 15619 Humboldt about 1 mi n Murphy Meadow (e of Korbel); Bald Mountain Comment
  HSC57093  Juncus exiguus Walter Overton, Marvin Butler 1979-7-24 9815 Humboldt Near Black Rock, close to the town of Willow Creek 1463 Comment
  HSC57986  Juncus exiguus G. L. Clifton, Terry Griswold 1979-7-31 11721 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1805 Comment
  UC1152104  Juncus hesperius Joseph P. Tracy 1938-6-15 15938 Humboldt 2 mi e Carlotta 30 Comment
  HSC82399  Juncus howellii Thomas W. Nelson 1979-7-11 5015 Humboldt N Trinity Mtn. and ridge to E 1829 Comment
  HSC45545  Juncus lescurii J. P. Smith 1971-10-6 4975 Humboldt End of Murray Rd. in McKinleyville. Comment
  HSC69632  Juncus lescurii R. Kalal 1980-6-3 27 Humboldt Samoa Dunes, along Samoa Blvd., near Eureka 3 Comment
  HSC63280  Juncus parryi M. A. Baker 1979-6-27 930 Humboldt Rock faces E of Oregon Creek Comment
  CAS-BOT-BC154066  Juncus planifolius Peter F. Zika 2008-10-19 24229 Humboldt E side of Route 101, near Exit 728 for Trinidad Beach 110 Comment
  RSA167236  Keckiella corymbosa Joseph P. Tracy 1950-8-20 19315 Humboldt On rock ledges at Ishi-pishi Falls west side of Klamath River opposite mouth of Salmon River. Comment
  UC1222464  Keckiella corymbosa Joseph P. Tracy 1934-8-26 13602 Humboldt Blue Slide Northern Coast Ranges (on Van Duzen River) 91 Comment
  CAS-BOT-BC499191  Kopsiopsis strobilacea C. Young 1967-5-15 s.n. Humboldt Orleans Comment
  UC302178  Lactuca biennis Joseph P. Tracy 1926-7-18 7746 Humboldt near South Fork Trinity River; Northern Coast Ranges, Trinity River Valley, Kirkham Creek 182 Comment
  HSC98659  Lactuca biennis Cara Witte 2007-7-26 591 Humboldt National Forest 1 on Kinsey Ridge. 1/4 mile south of intersection with 4N06. Near power poles. 1283 Comment
  CAS-BOT-BC349841  Lactuca tatarica subsp. pulchella Henry M. Pollard 1946-9-2 s.n. Humboldt Orleans Mt. 1524 Comment
  HSC69891  Lagophylla ramosissima Thomas W. Nelson, Jane P. Nelson 1977-7-30 3661 Humboldt Beside State Rte. 36, 1 mi. E of Dinsmore. 732 Comment
  UCSB45118  Lamium amplexicaule Council, Michael 1978-3-11 Humboldt Southwest corner of Cathedral Oaks and Los Caneros 10 Comment
  JEPS87028  Lapsana communis Dean W. Taylor 1991-9-15 12293 Humboldt near the mouth Tom Creek (along Highway 101); North Coast Ranges, Big Lagoon 3 Comment
  RSA18146  Lapsana communis C. B. Wolf 1927-8-22 801 Humboldt Big Lagoon. Comment
  POM161459  Lasthenia glaberrima Joseph P. Tracy 1916-6-19 4720 Humboldt Dobbyn Creek Comment
  UC1223220  Lasthenia glaberrima Joseph P. Tracy 1951-6-21 19530 Humboldt back Everett Beck house (formerly George Gray's) (Hydesville); in bed of former Goose Lake, Hydesville Comment
  HSC89316  Lathyrus aphaca Pat Daly 1989-4-14 Humboldt Mckinleyville, 4886 Cottage Grove Ave. Comment
  HSC95582  Lathyrus latifolius Andrea Pickart 2002-7-19 183 Humboldt Arcata Marsh at Jolly Giant Creek mile .1 10 Comment
  UC1199081  Lathyrus littoralis Joseph P. Tracy 1933-5-20 12223 Humboldt Cape Mendocino 6 Comment
  HSC39108  Lathyrus nevadensis var. nevadensis D. E. Anderson, J. P. Smith 1971-7-6 Humboldt Horse Mtn. Comment
  JEPS55344  Lathyrus nevadensis var. nevadensis Joseph P. Tracy 1926-5-2 7444 Humboldt Willow Creek Canyon Northern Coast Ranges 609 Comment
  UC902096  Lathyrus nevadensis var. nevadensis Harold E. Parks and Joseph P. Tracy 1949-6-25 11659 Humboldt near Mud Springs (on the Trinity Summit Road) 1341 Comment
  CAS-BOT-BC205042  Lathyrus palustris Doris K. Kildale 1926-6-25 2177 Humboldt Big Lagoon Comment
  HSC97914  Lathyrus polyphyllus Cara Witte 2007-6-14 279 Humboldt Along National Forest 1. Near Kinsey Ridge. 3/4 mile south of intersection with 4N06. 1256 Comment
  UCD106342  Lathyrus polyphyllus A. Murphy 1951-5-15 s.n. Humboldt Half mile S. of South Fork on McCann Road. Comment
  UC931687  Lathyrus polyphyllus C. L. Hitchcock 1949-6-8 19090 Humboldt ca 10 mi w Willow Creek (near Highway 299) Comment
  UC709410  Lathyrus torreyi Joseph P. Tracy 1939-7-9 16338 Humboldt Snow Camp 1402 Comment
  NY73892  Lathyrus torreyi H. N. Bolander 1866-1 6506 Humboldt Thickets near the coast Comment
  UC1222402  Lathyrus torreyi Joseph P. Tracy 1943-7-18 17430 Humboldt East Fork of Willow Creek, Willow Creek Canyon, along Trinity Highway Willow Creek Canyon Comment
  UCD106660  Lathyrus torreyi C. L. Hitchcock 1949-6-7 19084 Humboldt 15 miles E of Blue Lake, along Highway 299. Comment
  HSC23457  Lathyrus tracyi D. E. Anderson 1965-5-1 3561 Humboldt Along Hwy. 96, 1.9 mi. N of Willow Creek Comment
  UC15322  Lathyrus vestitus Joseph P. Tracy May 1901 1201 Humboldt Humboldt Bay North Coast Ranges 30 Comment
  HSC81920  Lathyrus vestitus subsp. bolanderi Thomas W. Nelson, Jane P. Nelson 1979-7-3 4967 Humboldt Along road to Joe Losey property at junction of Kneeland and Maple Creek Rds. 610 Comment
  HSC64139  Lathyrus vestitus subsp. vestitus J. P. Smith, J. O. Sawyer, J. Cole 1977-7-2 3051 Humboldt Rd. 11N17 between Dagsaw Springs and Divide Lake 793 Comment
  UC931335  Lathyrus vestitus var. ochropetalus C. L. Hitchcock 1949-6-8 19093 Humboldt 1 mi w Willow Creek (near Highway 299) Comment
  JEPS13463  Layia carnosa Joseph P. Tracy 1917-5-30 4796 Humboldt sand dunes of coean beach at mouth Little River; Northern Coast Region Comment
  UC89177  Layia carnosa Harley P. Chandler May 1901 1150 Humboldt Humboldt Bay 3 Comment
  UC1223218  Layia gaillardioides Joseph P. Tracy 1942-6-15 17165 Humboldt 5 mi n Garberville 60 Comment
  CAS-BOT-BC339128  Leontodon saxatilis subsp. saxatilis Carl B. Wolf 1927-8-22 777 Humboldt Big Lagoon Comment
  HSC67446  Leontodon saxatilis subsp. saxatilis J. P. Smith 1971-10-6 4959 Humboldt End of Murray Rd. in McKinleyville. Comment
  HSC38941  Leontodon saxatilis subsp. saxatilis Linda M. Barker 1976-6-1 1562 Humboldt Lanphere-Christensen Dunes, 3 mi. W of Arcata. Comment
  OBI40320  Leontodon saxatilis subsp. saxatilis Ralph N. Philbrick 1974-8-28 s.n. Humboldt Behind sandy beach and road fill, Hwy 101, S of Orick Comment
  UC1225756  Lepidium latipes Joseph P. Tracy 1948-5-31 17991 Humboldt Harris 762 Comment
  UC1199160  Lepidium nitidum Joseph P. Tracy 1913-5-4 4069 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  HSC26269  Lepidium oblongum Thomas W. Nelson 1971-5-31 448 Humboldt 915 Comment
  CAS-BOT-BC226528  Leptosiphon acicularis Doris K. Kildale 1927-7-10 3736 Humboldt Gans Prairie - Bald Hills road Comment
  HSC79326  Lessingia nemaclada D. K. Imper 1982-8-27 Humboldt 1.5 mi. S of junction with FS 2S05 on FS 8E05, Six Rivers National Forest. Comment
  JEPS20619  Lessingia nemaclada Joseph P. Tracy 1937-9-5 15681 Humboldt Willow Creek Trinity River Valley 152 Comment
  HSC3105  Leucojum aestivum J. C. Reppas 1963-2-22 20 Humboldt 820 Fickle Hill Rd. Comment
  HSC48837  Lewisia nevadensis Brad Klipfel, J. O. Sawyer, J. P. Smith 1973-5-27 28 Humboldt Grogan's Hole near N Trinity Mtn. 1829 Comment
  HSC102128  Lewisia triphylla M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 1032 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  JEPS17514  Ligusticum apiifolium Joseph P. Tracy 1924-8-17 6820 Humboldt Trinidad Northern Coast Ranges, Trinidad 60 Comment
  HSC56325  Ligusticum grayi Overton, Butler 1979-8-2 12668 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  CAS-BOT-BC508393  Lilium columbianum Doris K. Kildale 1927-7-10 3739 Humboldt Gans Prairie, Bald Hills Comment
  CAS-BOT-BC508394  Lilium columbianum Mrs. L. B. Kildale 1925-6-7 s.n. Humboldt Between Trinidad Head and Orick Comment
  CAS-BOT-BC508407  Lilium columbianum A. M. Vollmer; L. Beane 1953-7-1 121 Humboldt Unspecified Comment
  HSC45280  Lilium columbianum Clifton Raymond Chesbrough 1971-7-5 40 Humboldt Along Fickle Hill Rd. Comment
  CAS-BOT-BC130633  Lilium kelloggii A. M. Vollmer; L. Beane 1951-7-1 173 Humboldt Freshwater, about 4-5 miles northeast of Eureka Comment
  CAS-BOT-BC130634  Lilium kelloggii Doris K. Kildale 1925-6-28 790 Humboldt Kneeland Prairie 609 Comment
  HSC15574  Lilium kelloggii D. G. Hauger 1967-7-15 12 Humboldt Kneeland Rd, 0.25 mi. from Kneeland Post office Comment
  RSA130331  Lilium kelloggii Albert M. Vollmer, L. Beane 1953-07 119 Humboldt Freshwater Comment
  UC302156  Lilium kelloggii Joseph P. Tracy 1926-6-13 7593 Humboldt Liscom HIll; Northern Coast Ranges 457 Comment
  HSC33663  Lilium occidentale Doris K. Niles, Thomas W. Nelson 1974-6-20 Humboldt Wiggins Ranch, W of garbage dump Comment
  HSC33664  Lilium occidentale Doris K. Niles, Thomas W. Nelson 1974-6-20 Humboldt Wiggins Ranch, W of garbage dump Comment
  CAS-BOT-BC130731  Lilium pardalinum Doris K. Kildale 1925-7-4 994 Humboldt Upper Willow Creek Canyon 640 Comment
  HSC36887  Lilium pardalinum subsp. pardalinum Thomas W. Nelson, Jane P. Nelson, James Nelson 1975-7-20 2060 Humboldt Beside Rd. 2S08 to Pine Mtn. Comment
  HSC75956  Lilium pardalinum subsp. pardalinum Overton, Butler 1979-7-24 9774 Humboldt Near Black Rock, close to the town of Willow Creek 1463 Comment
  HSC98051  Lilium pardalinum subsp. pardalinum Cara Witte 2007-7-11 488 Humboldt Waterhole off Forest Service Road 5N10. Approximately 2 miles east of intersection with National Forest 1. 1346 Comment
  HSC65215  Lilium pardalinum subsp. vollmeri T. Jimerson, J. Pageau, B. Marcot 1979-8-10 712 Humboldt Off trail 6E18 between Tish Tang Creek and tributary 1341 Comment
  CAS-BOT-BC132961  Lilium rubescens Milo S. Baker 1927-8-14 2428 a Humboldt Summit of Ridge West of Bull Cr. Comment
  HSC15581  Lilium rubescens Paul Shields 1955-6-12 Humboldt 6 miles west of Meyers Flat Comment
  JEPS19585  Limnanthes douglasii Joseph P. Tracy 1933-5-20 12246 Humboldt near Petrolia; North Coast Region, Mattole River 15 Comment
  JEPS19592  Limnanthes douglasii Lincoln Constance 1934-5-29 721 Humboldt Upper Look Prairie South Fork Eel River, Bull Creek Region 365 Comment
  HSC59466  Limnanthes douglasii M. A. Ericksen 1979-5-13 285 Humboldt Chezem Rd., 0.2 mi. from Hwy. 299 Comment
  UC1197415  Limnanthes douglasii Joseph P. Tracy 1927-5-8 7981 Humboldt Phillipsville Northern Coast Ranges (facing South Fork of Eel River) 121 Comment
  HSC69869  Limnanthes douglasii subsp. nivea Thomas W. Nelson 1978-5-28 4098 Humboldt McKeown Ranch, N of Dinsmore 762 Comment
  HSC2204  Limnanthes douglasii subsp. nivea Lincoln Constance, R. C. Rollins 1942-5-21 3000 Humboldt The Klamath and Siskiyou region , 2 mi. N of Harris 762 Comment
  CDA33609  Limnobium laevigatum David Juliano 2010-9-7 PDR# 1414284 Humboldt Loleta; Catfish Lake (a stream-fed natural pond), near Tompkins Hill Road and Hookton Road 0 Comment
  HSC90329  Limonium californicum Jean Hanson 1980-6-22 103 Humboldt Indian (Gunther) Island, Humboldt Bay, city of Eureka: W side of dike on NW side of island. Comment
  CDA39662  Limonium californicum T. C. Fuller 1961-9-27 7045 Humboldt 1 mile north of Indianola Road, Highway 101, 5 miles north of Eureka. 0 Comment
  UC1198570  Linanthus bicolor Joseph P. Tracy 1908-6-7 2616 Humboldt Butler Valley North Coast Ranges 152 Comment
  UC23540  Linanthus filipes Harley P. Chandler Jun 1901 1309 Humboldt Hupa Indian Reservation North Coast Ranges 152 Comment
  HSC72632  Linnaea borealis subsp. longiflora J. P. Smith 1977-7-3 9251 Humboldt Six Rivers National Forest, along the road to Onion Lake, just above Blue Lake 976 Comment
  HSC12547  Linum bienne C. Kline 1970-10-26 42 Humboldt End of School Rd., Mckinleyville, bluffs above Mad River. Comment
  HSC39788  Linum bienne Peter Sorensen 1976-6-4 Humboldt N Spit of Humboldt Bay, S of Samoa near airport Comment
  HSC46152  Linum bienne J. P. Smith 1973-5-26 6828 Humboldt Scotia Bluffs along the Eel River near Rio Dell. Comment
  SDSU8125  Linum bienne D. F. Howe 1961-8-1 Humboldt 9 miles north of Arcata on #101. Comment
  JEPS37738  Lithocarpus densiflorus W. L. Jepson and W. W. Mott Jul 3 1903-Jul 5 1903 Humboldt Briceland; sw Humboldt County Comment
  SEINET8981428  Lithocarpus densiflorus W. D. Billings 1940-6-25 s.n. Humboldt Cedar Creek, 35 miles east of Arcata 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
  HSC97506  Lithophragma parviflorum var. parviflorum C. Witte 2007-5-22 80 Humboldt Cold Spring. 1/2 mile south of Titlow Hill. 1392 Comment
  UC1199425  Logfia gallica Joseph P. Tracy 1935-5-24 13876 1/2 Humboldt Fort Seward 106 Comment
  UC1103060  Lolium multiflorum Joseph P. Tracy 1915-6-20 4653 Humboldt Eureka; Northern Coast Region, Eureka 0 Comment
  UC38782  Lolium multiflorum Harley P. Chandler May, 1901 1103 Humboldt Humboldt Bay; North Coast Ranges, Humboldt Bay 30 Comment
  UCD66413  Lolium perenne Linda M. Barker 1976-7-5 1646 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  UC50699  Lolium temulentum Joseph Burtt Davy 1899-7-30 6205 Humboldt Arcata Comment
  RSA226615  Lomatium dasycarpum subsp. dasycarpum D. E. Anderson 1965-5-1 3588 Humboldt Along Highway 96, 3-4 miles south of Weitchpec Comment
  HSC23086  Lomatium dasycarpum subsp. dasycarpum D. E. Anderson 1965-5-1 3588 Humboldt Along Hwy. 96, 3-4 mi. S of Weitchpec Comment
  HSC74029  Lomatium macrocarpum Gail Newton 1980-7-22 1681 Humboldt Near Devils Backbone 1554 Comment
  HSC74465  Lomatium macrocarpum M. A. Baker 1980-5-18 1328 Humboldt Near Black Mtn. 792 Comment
  HSC97413  Lomatium macrocarpum Griswold, Butler 1979-7-10 6230 Humboldt Near Kinsey Ridge, close to the town of Willow Creek 1244 Comment
  HSC82036  Lomatium macrocarpum Thomas W. Nelson, James Nelson 1980-6-10 5404 Humboldt Along Swayback Ridge 4-wheel drive road, 2.5 mi. N of junction with FS Rd. 1S07 1463 Comment
  HSC96070  Lomatium macrocarpum J. McIntire, S. Lyon 2005-6-15 12 Humboldt 1 mi. SE of Grouse Mtn. on FS 4N32 1610 Comment
  SEINET12118910  Lomatium nudicaule J. P. Tracy 1951-1 19573 Humboldt Twin Lakes vicinity (Snow Camp & Twin Lakes Trip) Comment
  HSC47949  Lomatium tracyi Brad Klipfel 1974-5-8 326 Humboldt Horse Mountain Comment
  UC314629  Lomatium tracyi Joseph P. Tracy 1926-6-20 7610 Humboldt Horse Mt. Northern Coast Ranges, Horse Mt. 1524 Comment
  HSC47609  Lomatium utriculatum J. P. Smith 1977-4-23 9025 Humboldt 2.5 mi. S of Shelter Cove Rd., S Fork of Bear Creek at Wailaki Campground. 561 Comment
  JEPS17553  Lomatium utriculatum Joseph P. Tracy 1923-7-4 6525 Humboldt Northern Coast Ranges, South Yager Creek Valley 762 Comment
  UC1222488  Lonicera conjugialis Joseph P. Tracy 1951-6-16 19483 Humboldt summit of the Siskiyous at crossing of Takilma-Happy Camp Road Siskiyous Comment
Read comments
Jul 31 2012
  UC177242  Lonicera hispidula var. vacillans Joseph P. Tracy 1912-7-4 3735 Humboldt near Hydesville; Northern Coast Region 60 Comment
  HSC3926  Lonicera involucrata var. ledebourii W. R. Brigham 1962-5-19 8 Humboldt S of Big Lagoon. Comment
  RSA47121  Lonicera involucrata var. ledebourii Doris K. Kildale 1926-4-9 1740 Humboldt Samoa road, sandy peninsula. Comment
  UC1239558  Lonicera involucrata var. ledebourii Joseph P. Tracy 1933-5-20 12219 Humboldt Capetown Bear River 30 Comment
  UC719786  Lonicera involucrata var. ledebourii Rogers McVaugh 1941-8-3 6217 Humboldt ca. 1 1/4 mi s H.Q. Patrick's Point State Park Comment
  UCD137387  Lonicera involucrata var. ledebourii Joseph P. Tracy 1943-3-21 17413 Humboldt Alton, along Van Duzan River. 30 Comment
  HSC98254  Lotus corniculatus Norman H. Moe 1962-5-19 Humboldt Lanphere's Place Comment
  HSC98253  Lotus corniculatus J. W. Johnson 1961-8-23 1049 Humboldt Arcata, Lanphere farm, Samoa Peninsula Comment
  UC1223433  Lotus denticulatus Joseph P. Tracy with Mr. Murphy 1951-6-26 19578 Humboldt vicinity Twin Lakes Comment
  UC179922  Lotus denticulatus Joseph P. Tracy 1914-6-14 1240 Humboldt near Hydesville; Northern Coast Ranges, Van Duzen River, Yager Creek 30 Comment
  SEINET12148049  Lotus formosissimus J. P. Tracy 1950-1 18746 Humboldt Capetown, on Bear River, top of Cape Ridge - `miE of cape Mendocino 152 Comment
  JEPS55767  Lotus purshianus var. purshianus Mrs. M. H. Manning 1900-1 Humboldt Hupa Valley Comment
  UC1223419  Lotus purshianus var. purshianus Joseph P. Tracy 1937-8-12 15628 Humboldt 3 mi s Murphy Meadows (at border of Lake Prairie Bog); Bald Mountain, Lake Prairie, Lake Prairie Bog 1066 Comment
  RSA90403  Lotus unifoliolatus F. W. Peirson 1926-7-12 7033 Humboldt Redwood Creek, Orick. Comment
  HSC43849  Lotus unifoliolatus var. unifoliolatus Maralyn O'Meara 1974-7-17 558 Humboldt Kneeland Comment
  HSC39224  Lotus unifoliolatus var. unifoliolatus D. E. Anderson, J. P. Smith 1971-7-6 - 1319 Humboldt Rock wall near bridge over Supply Creek Comment
  UC1193159  Luina hypoleuca P. Zinke 1950-10-9 185 Humboldt 300 yards nw summit of Kings Peak 1249 Comment
  SBBG52995  Lupinus J. D. Hobson -Jul-1966 Humboldt S end of sand spit forming Eureka Harbor, 10 mi S of Eureka Comment
  UC503010  Lupinus affinis Joseph P. Tracy 1932-5-1 9877 Humboldt vicinity Garberville; Northern Coast Ranges, vicinity of Garberville 121 Comment
  UC1776380  Lupinus albicaulis R. Spellenberg 1990-7-9 Humboldt Extreme E edge county, 7 air mi. WNW of Hyampom, 42 mi S of Calif Hwy 299 and Berry Summit on USFS Rd. 1, ca 1 mi S of Blake Mtn. on South Fork Mountain. 1767 Comment
  UC1223276  Lupinus albicaulis var. shastensis Joseph P. Tracy 1937-8-12 15656 Humboldt Snow Camp 1402 Comment
  SEINET12154351  Lupinus albicaulis var. shastensis J. P. Tracy 1940-1 16687 Humboldt Wilder Range Comment
  CAS-BOT-BC196399  Lupinus arboreus R. J. Mastrogiuseppe; J. D. Mastrogiuseppe 1974-9-3 178 Humboldt On sand dunes of Clam Beach Comment
  SEINET10544235  Lupinus arboreus Mary Susan Taylor 1990-8-22 Taylor 6070 Humboldt Samoa Recreation Area on Samoa Peninsula, Staging Area, Eureka. Coastal scrub in ORV area. Comment
  RSA98774  Lupinus arboreus var. arboreus P. A. Munz 1954-7-25 19868 Humboldt On sand dunes at Humboldt Lighthouse south of Samoa. Comment
  HSC14801  Lupinus bicolor R. T. Forester 1963-5-6 44 Humboldt 1 mi. S of Fairhaven on Samoa Rd. Comment
  HSC73959  Lupinus bicolor Gail Newton 1980-6-7 131 Humboldt Near Brush Mtn. 1128 Comment
  JEPS64982  Lupinus bicolor Lincoln Constance 1934-5-26 664 Humboldt s end Dyerville (South Fork Eel River); South Fork Eel River 45 Comment
  HSC102056  Lupinus latifolius M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-13 961 Humboldt Patterson Meadows 1555 Comment
  SEINET12154562  Lupinus latifolius J. P. Tracy 1939-1 16415 Humboldt Grouse Mtn, "Clear Lake" 1524 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
  UC156999  Lupinus luteolus Joseph P. Tracy 1908-6 2696 Humboldt opposite Buck Mountain (Valley of Van Duzen River); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  HSC36152  Lupinus lyallii var. villosus Thomas W. Nelson, Jane P. Nelson, James Nelson 1975-7-20 2049 Humboldt Along Rd. 2S08 to Pine Mtn. 1524 Comment
  UC161546 Image available Lupinus microcarpus Joseph P. Tracy 1911-7-4 3280 Humboldt near mouth of Willow Creek; Northern Coast Ranges, Valley of Trinity River, Willow Creek; Willow Creek, Humboldt Co. 152 Comment
  UC176607  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
  HSC39785  Lupinus rivularis Peter Sorensen 1976-5-29 Humboldt King Salmon Comment
  UCD109516  Lupinus rivularis P. B. Kennedy 1929-6-12 s.n. Humboldt Around Eureka. Comment
  HSC99372  Luzula comosa K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-6-24 21 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  CAS-BOT-BC436737  Luzula comosa var. laxa R. K. Gierisch; D. H. Esplin 1969-7-1 3539 Humboldt Six Rivers area: Grouse Mt. 1584 Comment
  JEPS19059  Lycopodium clavatum C. C. Marshall 1890-1 97 Humboldt Comment
  JEPS431  Lysichiton americanus W. L. Jepson 1936-8-17 17916 Humboldt 2 mi. s. Field's Landing (near Still's ranch) Comment
  JEPS45986  Lythrum hyssopifolia Lincoln Constance 1934-5-27 693 Humboldt Bull Creek Region, South Fork Eel River, s end of Dyerville Bridge South Fork Eel River; Bull Creek Region, , Dyerville Bridge 45 Comment
  HSC46957  Lythrum hyssopifolia J. P. Smith, Thomas W. Nelson 1977-6-30 9203 Humboldt Samoa Peninsula just E of the drag strip. Comment
  CAS-BOT-BC342799  Madia elegans Richard Snow 1957-8-31 306 Humboldt 4 miles north of Garberville at Dean Creek Lodge Comment
  SEINET7016732  Madia exigua Wanda P. Vestal, A. G. Vestal 1937-6-23 s.n. Humboldt Saddle near west end of Bald Hills, southeast of Orick. Comment
  UC581815  Madia gracilis Joseph P. Tracy 1934-7-18 13432 Humboldt Grouse Mountain North Coast Ranges, Grouse Mountain 1524 Comment
  JEPS40411  Madia gracilis W. L. Jepson 1902-7-1 1967 Humboldt at Berry's Ranch; Redwood Creek Comment
  POM214875  Madia gracilis Joseph P. Tracy 1932-7-13 10494 Humboldt Klamath Mountains: Trinity Summit, open ground at Corral Prairie 1524 Comment
  UC1199395  Madia gracilis Joseph P. Tracy 1919-7-20 5182 Humboldt Mount Pierce Northern Coast Ranges 914 Comment
  UC165190  Madia gracilis Joseph P. Tracy 1911-6-25 3250 Humboldt at Bucksport; Eureka 0 Comment
  CAS-BOT-BC343588  Madia sativa Joseph P. Tracy 1927-6-18 8176 Humboldt Northern Coast Ranges. Cape Mendocino. Southwestern slopes, fronting the ocean, three miles south of point of the cape 30 Comment
  CAS-BOT-BC343592  Madia sativa J. Clausen 1932-9-19 692 Humboldt Weott Comment
  CAS-BOT-BC508515  Maianthemum dilatatum Doris K. Kildale 1925-12-20 1342 Humboldt Big Lagoon Comment
  CAS-BOT-BC508517  Maianthemum dilatatum A. A. Heller 1937-6-8 15899 Humboldt Bishop Pine Lodge, 3 miles north of Trinidad Comment
  HSC15592  Maianthemum dilatatum J. W. Johnson 1962-4-21 1287 Humboldt Samoa Peninsula, Arcata Comment
  CAS-BOT-BC510674  Maianthemum racemosum subsp. amplexicaule Milo Baker 1923-7-31 149 Humboldt Lawrence Creek Comment
  RSA135322  Maianthemum racemosum subsp. amplexicaule Volney Rattan 1883-06 s.n. Humboldt Near Summit between Pilot Creek and South Fork Trinity River Comment
  RSA21602  Maianthemum racemosum subsp. amplexicaule Carl B. Wolf 1937-9-14 9349 Humboldt North Coast Range, Lord Ellis Road, 0.5 mile east of summit of Willow Creek Grade 762 Comment
  HSC57027  Maianthemum stellatum Overton, Butler 1979-7-24 9648 Humboldt Near Friday Camp, close to the town of Willow Creek. 1250 Comment
  HSC74431  Maianthemum stellatum Gail Newton 1980-8-10 2061 Humboldt Near Blake Mtn. 1707 Comment
  RSA183522  Maianthemum stellatum D. E. Anderson 1965-5-8 3630 Humboldt 0.6 miles west of bridge over North Fork of Mad River, along highway 299. Comment
  RSA24192  Maianthemum stellatum Carl B. Wolf 1941-3-2 9982 Humboldt Along north bank of the Van Duzen River, 4.8 miles above Carlotta 61 Comment
  HSC40015  Malacothrix floccifera Thomas W. Nelson, Jane P. Nelson 1976-7-1 2916 Humboldt Along N side of Mt. Lassic (Signal Peak) 1738 Comment
  HSC98021  Malacothrix floccifera Cara Witte 2007-7-8 427 Humboldt Board Camp Mountain. Pack trail 4N26. 1/2 mile from Tri Board Camp intersection. 1536 Comment
  POM187937  Malacothrix floccifera Marcus E. Jones 1931-7-16 29095 Humboldt Junction, East of Arcata. Comment
  UC204742  Malacothrix floccifera Joseph P. Tracy 1918-7-6 5049 Humboldt near Humboldt-Mendocino County line; Northern Coast Ranges, South Fork of Eel River 152 Comment
  POM98598  Malacothrix floccifera F. W. Peirson 1926-7-14 s.n. Humboldt Sandy shores of Eel River about 5 miles south of Scotia Comment
  UC990712  Marah oregana Roxana S. Ferris 1951-9-5 12448 Humboldt Trinidad Head Comment
  HSC45592  Marah oregana Diane L. Reed 1978-5-27 127 Humboldt Horse Mtn., on Titlow Hill Rd. 1.5 mi. from junction with Hwy. 299 Comment
  JEPS42487  Marah oregana W. L. Jepson 1897-7-31 14136 Humboldt De Haven to Fort Bragg Comment
  POM128304  Marah oregana H. P. Chandler 1901-6-10 1407 Humboldt Saint's Rest; Klamath River. 152 Comment
  HSC14972  Medicago polymorpha Francis Winter 1960-4-23 Humboldt 4 mi. N of Dollar Ranch, on Korbel-Maple Creek Rd. 244 Comment
  UC1145132  Melica aristata Joseph P. Tracy 1948-8-15 18157 Humboldt 2 mi e Grove's Prairie (on ridge, Trinity Summit); Trinity Summit 1524 Comment
  SEINET200333 Image available Melica harfordii Joseph P. Tracy 1913-6-13 4116 Humboldt Bolander Rocky Mountain slopes; near summit of ridge between Van Duzen and Mad rivers on Dinsmore's Ranch. 1067 Comment
  UCD87511  Melica harfordii August L. Hormay 1932-5-12 s.n. Humboldt Bull Creek Road. Comment
  CAS-BOT-BC264164  Melica subulata Joseph P. Tracy 1933-7-26 12910 Humboldt Grouse Mountain 1524 Comment
  UC184151  Melica subulata Joseph P. Tracy 1912-7-27 3883 Humboldt Kneeland Prairie; North Coast Ranges 762 Comment
  UCD88654  Melica subulata A. H. Murphy 1951-6-25 67 Humboldt Snow Camp Meadow. 8 miles e.n.e of Kneeland. Comment
  UC1197423  Melilotus albus Joseph P. Tracy 1920-8-15 5359 Humboldt Bluff Creek Northern Coast Ranges, Klamath River 152 Comment
  HSC59671  Melilotus albus George Kirn 1977-10-21 Humboldt Eureka, Bayfront, 1/2 mi. E of Hwy. 255 8 Comment
  JEPS63456  Mentha aquatica J. P. Tracy 1912-1 Humboldt near Eureka (Loleta Pond); Loleta Pond Comment
  HSC90755  Mentha pulegium Gail Newton 1983-8-21 3856 Humboldt Elk River Wildlife Area, Eureka. Comment
  UC577377  Mentha spicata Joseph P. Tracy 1925-8-16 7233 Humboldt Trinity River Valley, near the South Fork; Northern Coast Ranges, Trinity River Valley, near South Fork 182 Comment
  HSC91898  Menziesia ferruginea E. Mackey 1986-5-13 Humboldt Patrick's Point State Park, Octopus Grove Comment
  HSC7850  Menziesia ferruginea subsp. ferruginea F. Morrell 1949-4-22 11 Humboldt Back Humboldt State University fish hatchery Comment
  HSC73145  Micropus californicus M. A. Baker 1980-5-18 1329 Humboldt Near Black Mountain 390 Comment
  UC1223195  Microseris laciniata subsp. laciniata Joseph P. Tracy 1942-6-15 17152 Humboldt 1/2 mi ne Garberville (on the road to Harris) 304 Comment
  SEINET11810186  Microseris linearifolia J. P. Tracy 1947-1 17676 Humboldt near Briceland Comment
  UC1199449  Microseris nutans Joseph P. Tracy 1932-7-12 10485 Humboldt Head of Brett Hole Trinity Summit 1828 Comment
  HSC20686  Mimulus aurantiacus var. aurantiacus S. R. Johnson 1965-4-16 35 Humboldt 1 mi. N of Luffenholtz Beach Comment
  JEPS35817  Mimulus aurantiacus var. aurantiacus Rimo Bacigalupi, and L. R. Heckard 1964-7-28 8963 Humboldt just above (1/8 mi) and e Shelter Cove Comment
  UC176996  Mimulus aurantiacus var. aurantiacus Joseph P. Tracy 1912-6-9 3646 Humboldt Alton Northern Coast Region 30 Comment
  HSC48858  Mimulus breweri Brad Klipfel 1973-6-10 53 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  RSA430202B  Mimulus dentatus J. P. Smith 1973-5-26 6821 Humboldt Scotia Bluffs along the Eel River near Rio Dell. Comment
  SEINET12269811  Mimulus dentatus Unknown 1936-1 13277 Humboldt near Trinidad Comment
  UC162587  Mimulus floribundus Joseph P. Tracy 1911-7-6 3364 Humboldt along road between mouth of Willow Creek and Three Creeks (Koby's ranch); Northern Coast Ranges 762 Comment
  BLMAR73  Mimulus guttatus Jennifer Anthony-Wheeler 1994-5-25 73 Humboldt King range, growing along lighthse rd 1/4 mi from Mattole beach 6 Comment
  UC582703  Mimulus guttatus Joseph P. Tracy 1935-5-25 13859 Humboldt Fort Seward 106 Comment
  HSC79538  Mimulus guttatus Kenneth Clark 1979-7-1 456 Humboldt Dead Man's Gulch; at Shelter Cove 11 Comment
  UC175796  Mimulus guttatus Joseph P. Tracy 1912-7-31 3897 Humboldt nw slope Buck Mountain; Northern Coast Ranges, Burr Valley 1066 Comment
  UC1196811  Mimulus kelloggii Joseph P. Tracy 1908-6 2938 Humboldt nw slope Buck Mountain; Northern Coast Ranges 1219 Comment
  HSC104076  Mimulus layneae S. Carothers 2002-6-11 Humboldt Six Rivers National Forest; along Ruth Lake Rd., between Ruth and bridge crossing to Shannon Butte 841 Comment
  UC1196787  Mimulus nanus var. nanus Joseph P. Tracy 1933-7-16 12795 Humboldt Hyampon Trail South Fork Mountain 1676 Comment
  UC582597  Mimulus nanus var. nanus Joseph P. Tracy 1937-7-29 15597 Humboldt Hyampon Trail South Fork Mountain 1676 Comment
  UC147917  Mimulus nasutus Joseph P. Tracy 1903-5-22 1883 Humboldt Alder Point Northern Coast Ranges, Eel River 152 Comment
  JEPS49686  Mitella caulescens Joseph P. Tracy 1923-6-24 6361 Humboldt near High Prairie; Northern Coast Ranges, Bald Mountain 1066 Comment
  HSC74621  Moehringia macrophylla M. A. Baker 1980-5-17 1252 Humboldt Near Le Perron Peak 1066 Comment
  HSC64760  Moehringia macrophylla Bruce Gordon 1980-4-10 141 Humboldt Redwood National Park, 60 m NE of Bald Hills Rd., 0.4 mi. NE of jct. of Bald Hills Rd. and K&K Rd Comment
  SEINET6646077 Image available Mollugo verticillata Joseph P. Tracy 1920-1 5363 Humboldt Klamath River at Bluff Creek Comment
  CAS-BOT-BC215565  Monardella odoratissima subsp. pallida Joseph P. Tracy 1930-7-16 8911 Humboldt McKay Camp, South Fork Mountain 1676 Comment
  CAS-BOT-BC215567  Monardella odoratissima subsp. pallida Henry M. Pollard 1946-8-28 s.n. Humboldt Near summit Orleans Mt. 1828 Comment
  BLMAR645  Monardella sheltonii Jennifer Wheeler 2011-8-31 645 Humboldt Lacks creek, Pine Ridge road, spur 3 at Stormy Saddle 1097 Comment
  OBI13608  Monardella sheltonii Carl B. Wolf 1937-8-13 9223 Humboldt North Coast Range, 8 mi E of Hoopa Valley on New rd towards Trinity Summit Comment
  CAS-BOT-BC220520  Monardella villosa Jos. Burtt Davy 1899-6-20 5697 Humboldt Hoopa Valley Comment
  RSA0022786  Monardella villosa subsp. subserrata F. W. Peirson 1926-7-13 7050 Humboldt Near Blue Lake, Mad River Comment
  RSA697855  Monardella villosa subsp. subserrata J. R. Bruff 1937-8-17 934 Humboldt Richardson Grove, bed of Eel River. Comment
  UC2035935  Monardella villosa subsp. villosa C. Epling, Wm. Robison 1935-7-24 Humboldt Dyerville Comment
  JEPS14830  Monotropa hypopitys W. L. Jepson 1902-6 1946 Humboldt woods near Green Pt. Ranch; Hupa Road Comment
  HSC102631  Montia chamissoi M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-29 1616 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1579 Comment
  CAS-BOT-BC444800  Montia diffusa Don Hagar 1957-6-6 59 Humboldt Brush Mountain, ca. 4 miles southwest of Willow Creek 853 Comment
  RSA264852  Montia diffusa Lincoln Constance, A. A. Beetle 1940-5-17 2615 Humboldt In Shade of Cornus and Sambucus, cutover Pseudotsuga forest. Above Van Duzen River, 1 mile below Dinsmore s 762 Comment
  RSA29091  Montia diffusa Lincoln Constance, A. A. Beetle 1940-5-17 2615 Humboldt In Shade of Cornus and Sambucus, cutover Pseudotsuga forest. Above Van Duzen River, 1 mile below Dinsmore s 762 Comment
  UC161050  Montia fontana Joseph P. Tracy 1909-5-2 2955 Humboldt Northern Coast Region, at Eureka Eureka; Northern Coast Region, Eureka 0 Comment
  HSC70951  Montia linearis J. M. DiTomaso 1981-5-15 2007 Humboldt Larabee Valley, 10 mi. E of Bridgeville on Hwy. 36 Comment
  UC524121  Montia parvifolia I. L. Wiggins 1932-7-7 5879 Humboldt near Samoa Comment
  HSC77395  Montia parvifolia L. P. Janeway 1983-5-21 301 Humboldt At East Fork USFS campground, W edge of flat canyon bottom 473 Comment
  RSA0056335  Montia sibirica Jim Shevock 1971-5-29 1142 Humboldt Highway 299, Trinity Highway. 457 Comment
  HSC16103  Morella californica J. W. Johnson 1961-11-27 1431 Humboldt Woods along the trail of the Hunt Farm, Samoa Comment
  RSA44542  Muhlenbergia andina Henry M. Pollard 1947-8-19 s.n. Humboldt Wilson Creek near Orleans. Comment
  UCD86799  Muhlenbergia mexicana P. B. Kennedy 1923-8-5 s.n. Humboldt West fork of Eel River between Phillipsville and Garberville. Comment
  UCD86802  Muhlenbergia mexicana Joseph P. Tracy 1916-9-5 4774 Humboldt South Fork of Eel River, 4 miles above the mouth. 60 Comment
  UC55917  Myosotis discolor J. P. Tracy 1900-5-28 827 Humboldt immediate vicinity of Eureka 0 Comment
  CHSC162  Myosotis latifolia S. Ptomey 1911-5-1 Humboldt Comment
  CAS-BOT-BC101664  Myrica californica Volney Rattan s.n. Humboldt unspecified Comment
  UC1173635  Narthecium californicum Joseph P. Tracy 1930-7-17 9003 Humboldt meadow at McKay Camp (S. Fork Mt.); S. Fork Mt. 1676 Comment
  RSA43883  Navarretia atractyloides H. M. Pollard 1948-8-5 s.n. Humboldt Orleans Comment
  UC1198526  Navarretia atractyloides Joseph P. Tracy 1933-7-9 12645 Humboldt Willow Creek Trinity River Valley 152 Comment
  HSC53978  Navarretia capillaris Griswold, Butler 1979-7-11 7052 Humboldt Near Twin Lakes, close to the town of Willow Creek 1417 Comment
  HSC45471  Navarretia divaricata Thomas W. Nelson, Jane P. Nelson 1978-7-2 4392 Humboldt SE of E peak of the Mount Lassic group 1616 Comment
  UC52826  Navarretia divaricata subsp. vividior Chesnut and Drew 1888-7-23 Humboldt Hyampum Comment
  UC907815  Navarretia leucocephala subsp. minima Joseph P. Tracy 1928-6-24 8476 Humboldt between Middle and North Yager Creeks (East Ranch) 762 Comment
  JEPS70390  Navarretia mellita Joseph P. Tracy 1934-7-9 13333 Humboldt 5 mi s Harris 762 Comment
  UC908872  Navarretia squarrosa Joseph P. Tracy 1935-7-18 14103 Humboldt Table Bluff 6 Comment
  UC1124141  Navarretia squarrosa H. L. Person 1932-7-23 Humboldt near Korbel; Eureka Quad. Comment
  UCD48693  Navarretia squarrosa John M. Tucker 1948-9-4 1862 Humboldt Beck's Ranch, Hydesville, Humboldt County, California. Comment
  UC169028  Nemacladus capillaris Joseph P. Tracy Jul 21 1905-Aug 16 1905 2296 Humboldt Elk Mountain; Northern Coast Ranges 1219 Comment
  HSC96266  Nemophila menziesii var. atomaria M. Lindquist, C. Riley 2005-6-10 7 Humboldt Cold Spring Camp, 7.4 mi. S of Hwy. 299 on NF 1 1375 Comment
  SEINET5521025  Nemophila menziesii var. atomaria J. P. Tracy 1906-5-6 2445 Humboldt Near Hydesville 60 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
  UC1239749  Nemophila parviflora Joseph P. Tracy 1921-4-24 5437 Humboldt Phillipsville Flat Northern Coast Ranges, , South Fork Eel Ri (South Fork Eel River) 91 Comment
  UCR37589  Nemophila pedunculata L. P. Janeway 1983-4-16 234 Humboldt Near the old Hwy 299 on W side of Berry Summit 823 Comment
  UC34955  Nicotiana attenuata Chesnut and Drew 1888-7-23 Humboldt Hyampon Comment
  CAS-BOT-BC60564  Noccaea fendleri subsp. glauca Lincoln Constance; Reed C. Rollins 1942-5-12 2887 Humboldt Klamath-Siskiyou Region. Klamath River 7 miles northeast of Weitchpec. 121 Comment
  HSC100095  Oemleria cerasiformis J. P. Smith, & J. O. Sawyer 2010-3-22 12712 Humboldt Along Hwy. 36, E of Dinsmore. 780 Comment
  HSC98741  Oemleria cerasiformis Cara Witte 2008-6-2 673 Humboldt White Oak Opening. 1231 Comment
  UC666835  Oemleria cerasiformis Joseph P. Tracy 1937-4-3 15250 Humboldt Willow Creek; Trinity River Valley 152 Comment
  HSC38335  Oenanthe sarmentosa Peter Sorensen 1976-8-11 Humboldt King Salmon Comment
  CDA38490  Oenanthe sarmentosa Tario 1932-10-7 s.n. Humboldt [no further data] 0 Comment
  HSC23225  Oenanthe sarmentosa Thomas O. Erickson 1971-10-28 1 Humboldt Luffenholtz Beach off Hwy. 101 N of Moonstone Comment
  SEINET10964717  Oenanthe sarmentosa Charlene A. Bennett, David B. Dunn; Chester T. Dziekanowski 1976-8-6 Bennett 481 Humboldt Collected by Hwy. 101, N side of Orick. 30 Comment
  CHSC70155  Oenothera glazioviana David K. Imper 1983-7-1 Humboldt Eureka. Weedlot on 6th Street. 15 Comment
  RSA21623  Oenothera wolfii Carl B. Wolf 1937-9-9 9307 Humboldt 2 miles S of Cape Mendocino. 6 Comment
  HSC37886  Olsynium douglasii var. douglasii Thomas W. Nelson 1976-4-3 2288 Humboldt On large rock at head of Goat Rock slide, N side of Van Duzen River Comment
  HSC82412  Oreostemma alpigenum var. andersonii Thomas W. Nelson 1979-7-11 5018 Humboldt N Trinity Mtn. and ridge to E. 1829 Comment
  CAS-BOT-BC499671  Orobanche californica subsp. californica Ira L. Wiggins 1932-7-19 5894 Humboldt Near the beach at south end of Big Lagoon Comment
  UC35316  Orobanche fasciculata Chesnut and Drew 1888-7-12 Humboldt Jarnigan's. Comment
  HSC55013  Orthilia secunda G. L. Clifton 1979-7-31 11395 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  HSC56000  Orthocarpus imbricatus Walter Overton, Marvin Butler 1979-7-31 11445 Humboldt Near Water Dog Lakes, close to the town of Hoopa 1830 Comment
  HSC99532  Orthocarpus imbricatus K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-28 196 Humboldt Near North Trinity Mtn and Water Dog Lakes, Six Rivers National Forest. 1826 Comment
  HSC55634  Osmorhiza berteroi Overton, Butler 1979-7-24 9649 Humboldt Near Titlow Hill, close to the town of Willow Creek 1250 Comment
  JEPS14255  Osmorhiza berteroi Joseph P. Tracy 1932-7-12 10450 Humboldt near Corral Prairie; Trinity Summit 1584 Comment
  HSC56049  Osmorhiza occidentalis G. L. Clifton, Terry Griswold 1979-7-31 11645 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1719 Comment
  HSC27893  Oxalis oregana Clifton Raymond Chesbrough 1973-6-19 65 Humboldt 0.25 mi. from Harris and T St. on U St. Comment
  UC726372  Oxalis oregana A. A. Heller 1923-7-8 13770 Humboldt near Pepperwood Comment
  JEPS43139  Oxalis oregana W. L. Jepson 1932-7-28 16432 Humboldt Bull Creek Flat Comment
  SD53235  Oxalis oregana Darley F. Howe 1962-5-22 3309 Humboldt 3.0 miles east of Orick n Bald Mountain road. 395 Comment
  SEINET3347650 Image available Oxalis oregana Joseph P. Tracy 1918-5-28 4940 Humboldt High Prairie Creek, east of Bald Mt. Comment
  HSC96581  Packera bolanderi var. bolanderi Gordon Leppig, Maralyn A. Renner 2005-6-7 2246 Humboldt Pacific Lumber Company land. Redwood House Rd., Hely Creek watershed 363 Comment
  RSA10050  Panicum capillare Joseph P. Tracy 1930-10-12 9207 Humboldt Eel River, Alton to Fortuna Comment
Read comments
Oct 2 2011
  HSC90262  Parentucellia viscosa Jean Hanson 1980-5-24 75 Humboldt Indian (Gunther) Island in Humboldt Bay, city of Eureka, W end of island, S of dike Comment
  SEINET3823290 Image available Pastinaca sativa Joseph P. Tracy 1937-10-31 15694 Humboldt Rio Dell 30 Comment
  HSC39934  Paxistima myrsinites J. O. Sawyer 1970-6-25 2291 Humboldt 1646 Comment
  JEPS10346  Pedicularis densiflora Lincoln Constance 1934-6-7 832 Humboldt Johnson Prairie; Bull Creek Region, South Fork Eel River Comment
  UC1326266  Pedicularis racemosa Milo S. Baker 1947-8-10 11904 Humboldt along trail to Trinity Summit from end of Forest Road from Hoopa 1432 Comment
  UC582554  Pedicularis racemosa Joseph P. Tracy 1930-7-16 8917 Humboldt near McKay Camp; South Fork Mountain 1676 Comment
  HSC1074  Pellaea mucronata var. mucronata J. P. Tracy 1933-6-13 12561 Humboldt Hoopa Mtn., near summit on rd. from Hoopa westward to Bair's 1067 Comment
  CHSC33041  Penstemon anguineus Thomas Nelson; Jane Nelson 1976-7-1 2907 Humboldt The Lassics. Growing along east side of Red Lassic; beside rd. 1S07. 1676 Comment
  UC1198046  Penstemon anguineus Joseph P. Tracy 1933-7-27 12869 Humboldt Grouse Mountain North Coast Ranges, Grouse Mountain 1524 Comment
  BLMAR273  Penstemon anguineus Jennifer Anthony-Wheeler 1999-7-30 273 Humboldt Lacks Creek, occuring in open, logged area of coniferous forests 1219 Comment
  HSC39933  Penstemon anguineus J. O. Sawyer 1970-6-25 2292 Humboldt 1646 Comment
  UC673099  Penstemon heterophyllus var. purdyi Joseph P. Tracy 1940-5-5 16543 Humboldt Garberville Garberville (on river bar) 152 Comment
  HSC73698  Penstemon laetus subsp. sagittatus M. A. Baker 1980-7-15 2971 Humboldt Near Whiting Ridge. 1341 Comment
  HSC36637  Penstemon laetus subsp. sagittatus Thomas W. Nelson, Jane P. Nelson, James Nelson 1975-6-14 1905 Humboldt N side of Pine Mtn. Comment
  HSC72436  Penstemon neotericus J. P. Smith, J. O. Sawyer 1972-5-28 5387 Humboldt 0.5 mi. S of Somes Bar on Hwy. 96 305 Comment
  UC201729  Penstemon rattanii unknown 1883-6-9 Humboldt near Kneeland Pr.; near Kneeland Pr. Comment
  RSA21653  Penstemon rattanii subsp. rattanii Carl B. Wolf 1937-6-14 8808 Humboldt North Coast Range, junction of Eureka - Kneeland Road and Maple Creek Road. 683 Comment
  HSC61769  Pentagramma triangularis Ruby Van Deventer 1963-7-1 Humboldt Along the Klamath R. at Pecwan 239 Comment
  UC1389970  Perideridia kelloggii T. I. Chuang and B. G. Briggs 1963-4-10 5088 Humboldt 4 mi e Myers Flat Comment
  HSC98906  Perideridia kelloggii Cara Witte 2008-8-16 1029 Humboldt Buck Flat. Intersection of National Forest 1 and Forest Service Road 5N01. 1579 Comment
  UC906661  Perideridia oregana Joseph P. Tracy 1949-7-19 18388 Humboldt ridge back of Clear Lake; Grouse Mountain 1524 Comment
  HSC6050  Petasites frigidus var. palmatus C. O. Baker 1962-3-22 6 Humboldt 2 mi. S of Trinidad along old Hwy. 101 183 Comment
  UCD134920  Petasites frigidus var. palmatus Joseph M. DiTomaso 1976-3-28 359 Humboldt just east of summit on Highway 299, 7 miles west of Willow Creek. 762 Comment
  POM160824  Petasites palmatus Joseph P. Tracy 1926-2-28 7377 Humboldt Trinity River Valley, near the S Fork. 183 Comment
  HSC97931  Petrorhagia dubia Cara Witte 2007-6-14 272 Humboldt Along National Forest 1. Near Kinsey Ridge and cattle guard. 3 miles north of intersection with 4N09. 1393 Comment
  SEINET3119233 Image available Phacelia bolanderi Bassett Maguire, Ruth Maguire, C. B. Maguire 1934-6-8 15225 Humboldt Bolling Grove State Park. Comment
  CHSC110702  Phacelia corymbosa Dean Wm. Taylor 2004-6-24 19129 Humboldt North Coast Ranges. Horse Mountain, along Titlow Hill Road 0.4 miles north from the junction with the road to the mountain summit. 1310 Comment
  HSC38488  Phacelia corymbosa D. E. Anderson, J. P. Smith 1976-7-6 - 1271 Humboldt Horse Mtn. Comment
  JEPS1201  Phacelia malvifolia Joseph P. Tracy 1927-6-8 8118 Humboldt TRINIDAD Comment
  JEPS2230  Phacelia nemoralis subsp. oregonensis Joseph P. Tracy 1936-6-9 14876 Humboldt Bear River Ridge Northern Coast Ranges 609 Comment
  UC162721  Phacelia nemoralis subsp. oregonensis Joseph P. Tracy 1911-7-5 3317 Humboldt Willow Creek (tributary of Trinity River) Northern Coast Ranges (near its mouth) 304 Comment
  CDA20501  Phalaris arundinacea P. Haggard 2004-7-8 PDR 1285917 Humboldt North Coast; Alder Grove Park near pond. 0 Comment
  UCD88519  Phalaris arundinacea J. W. Logan 1926-6-2 2 Humboldt Ferndale. Rusk Ranch. Comment
  RSA245301  Phalaris californica D. E. Anderson 1970-6-14 5125 Humboldt near Maple Creek School about 2 miles southeast of junction of Maple Creek Rd. and Butler Valley Rd. Comment
  CAS-BOT-BC76557  Philadelphus lewisii Joseph P. Tracy 1938-6-9 15872 Humboldt Dobbyin Creek 152 Comment
  CAS-BOT-BC76573  Philadelphus lewisii Alice Eastwood 1921-7-21 10655 Humboldt Carlotta Comment
  UC154152  Philadelphus lewisii Mrs. M. H. Manning 1900-1 Humboldt Hupa Comment
  HSC58693  Phleum alpinum Overton, Butler 1979-8-2 12694 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  POM126105  Phleum alpinum Joseph P. Tracy 1906-7-1 2514 Humboldt At Eureka 0 Comment
  UC526854  Phleum alpinum Joseph P. Tracy 1934-7-18 13447 Humboldt Grouse Mountain; North Coast Ranges, Grouse Mountain 1524 Comment
  HSC54577  Phleum pratense Overton, Butler 1979-7-24 9615 Humboldt Near Titlow Hill, close to the town of Willow Creek 1250 Comment
  HSC8515  Phleum pratense True Hoyle 1967-7-24 28967 Humboldt Oscar Stapp Ranch near Showers Creek and Showers Pass 1006 Comment
  HSC56182  Phlox diffusa Gilbert Muth 1979-8-1 12102 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1877 Comment
  UC1198553  Phlox douglasii subsp. rigida Joseph P. Tracy 1927-6-12 8142 Humboldt Horse Mountain 1432 Comment
  UC526853  Phragmites australis Joseph P. Tracy 1934-6-18 13226 Humboldt at Railroad Station Eureka; Northern Coast Ranges, Eureka 0 Comment
  HSC92126  Phyllospadix scouleri G. Smith 1967-7-21 1979 Humboldt Patrick's Point State Park 0 Comment
  HSC36086  Phyllospadix scouleri McCready 1959-11-8 Humboldt Near Trinidad Head Comment
  CAS-BOT-BC140582  Physocarpus capitatus Carl B. Wolf 1927-8-30 1227 Humboldt 2 mi. s. of Petrolia on the [Matole] Mattole River near point where road crosses river Comment
  HSC18711  Physocarpus capitatus C. B. Wolf 1927-8-30 1248 Humboldt 3 mi. S of Thorn along old coast road Comment
  OBI33130  Picea sitchensis David J. Keil 1983-7-1 17295 Humboldt Between Ferndale and Bear River Ridge Rd along Mattole Rd Comment
  SJSU2223  Picea sitchensis H. L. Buckalew 1959-7-10 Humboldt Prairie Creek Redwoods State Park, northweastern Humbollt County Comment
  JEPS46797  Pinus attenuata P. E. Goddard 1901-1 Humboldt Hupa region Comment
  HSC1487  Pinus contorta J. W. Johnson 1962-4-29 1294 Humboldt Ridge 8, Lanphere Farm, Samoa Peninsula Comment
  HSC31517  Pinus contorta Steve Selva, Roger Jensen 1974-8-28 92 Humboldt Approx. 5 mi. S of Arcata on the Samoa Peninsula Comment
  UCD134473  Pinus contorta H. E. Parks 1931-5-1 s.n. Humboldt Samoa. Comment
  UC573158  Pinus contorta subsp. contorta H. S. Yates 1936-6-16 5660 Humboldt 1 mi sw Samoa 6 Comment
  HSC55145  Pinus monticola G. L. Clifton, Griswold 1979-8-1 12046 Humboldt Near N Trinity Mtn., close to the town of Hoopa. 1798 Comment
  HSC95784  Pinus monticola Will Ferrand 2002-4-27 37 Humboldt Off Titlow Hill Rd. 0.75 mi. S of intersection of Titlow Rd. and Hwy. 299 884 Comment
  CAS-BOT-BC136533  Piperia candida Volney Rattan 1878-1-1 s.n. Humboldt Field redacted by CAS, contact the data manager for more information Comment
  UC1488747  Piperia elegans J. D. Ackerman 1974-8-13 405 Humboldt ca 2 mi n Manila (between sand dunes and Mad River Slough) Comment
  UC14936  Piperia elegans J. P. Tracy 1901-8-7 1253 Humboldt opposite Eureka; Samoa Comment
  UC303142  Piperia elongata Joseph P. Tracy 1925-7-12 7213 Humboldt near the South Fork Trinity River Valley; Northern Coast Ranges, Trinity River Valley 182 Comment
  UC1196428  Piperia transversa Joseph P. Tracy 1937-7-11 15419 Humboldt Garberville 152 Comment
  HSC48720  Pityopus californicus T. Mainwaring 1978-6-2 Humboldt Horse Mountain Area. Bulk Collection 175 Comment
  HSC48733  Pityopus californicus J. Pageau, T. Jimerson, W. Wisler, A. Regalis 1979-6-13 519 Humboldt Off FS 10N05. SE slope of Hopkins Butte. Bulk Collection 181 1037 Comment
  UC526823  Plagiobothrys reticulatus Joseph P. Tracy 1923-6-20 6340 Humboldt Miranda North Coast Ranges, Miranda 91 Comment
  JEPS60976  Plagiobothrys reticulatus var. reticulatus Joseph P. Tracy 1914-5-30 4486 Humboldt Hydesville 60 Comment
  JEPS61045  Plagiobothrys reticulatus var. rossianorum Joseph P. Tracy 1942-5-16 17337 Humboldt Garberville 152 Comment
  SEINET12275868  Plagiobothrys scouleri J. P. Tracy 1949-1 18322 Humboldt Cameron Hill on Kneeland Road Comment
  UC1222201  Plagiobothrys scouleri Joseph P. Tracy 1950-6-29 18936 Humboldt 6 mi se Arcata; Fickle Hill 609 Comment
  JEPS68128  Plagiobothrys tenellus Joseph P. Tracy 1932-5-1 9863 Humboldt near Garberville (Redway); Northern Coast Ranges 182 Comment
  UC249519  Plagiobothrys tenellus Joseph P. Tracy 1922-4-30 5990 Humboldt near Willow Creek; Northern Coast Ranges, Trinity River Valley 152 Comment
  UC179952  Plantago lanceolata Joseph P. Tracy 1914-5-30 4484 Humboldt near Hydesville; Northern Coast Region 60 Comment
  HSC62991  Plantago lanceolata David Wheeler 1979-4-23 83 Humboldt N end of Heindon Rd. at turn-around Comment
  RSA246720  Plantago lanceolata Robert F. Thorne, Percy C. Everett 1965-8-8 35232 Humboldt N. edge of Eureka, E. of Hwy. 101 5 Comment
  POM319565  Platanthera Patricia Wilder 1968-8-21 4391 Humboldt Bog in Big Lagoon Park, just west of Hwy 101; Mt. Range: Coast range; Drainage Area: Big Lagoon to Pacific Ocean. 2 Comment
  HSC55192  Platanthera dilatata var. leucostachys G. L. Clifton, Griswold 1979-8-2 12266 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  UC1196295  Platystemon californicus Joseph P. Tracy 1935-5-25 13871 Humboldt Fort Seward 106 Comment
  UC502932  Platystemon californicus Joseph P. Tracy 1932-6-26 10266 Humboldt Valley of South Yager Creek; Northern Coast Ranges, Valley of South Yager Creek 762 Comment
  CDA24588  Platystemon californicus E. Cohen 2002-4-15 21 Humboldt Eureka. Comment
  UC1239575  Plectritis congesta Joseph P. Tracy 1914-7-5 4568 Humboldt Northern Coast Ranges, High Prairie on Bald Mountain Bald Mountain; Northern Coast Ranges, , High Prairie 1066 Comment
  SEINET14400441  Plectritis congesta Unknown 1938-6-11 719 d Humboldt Humboldt County Comment
  UCD137534  Plectritis congesta R. N. Raynor 1935-1 s.n. Humboldt Exact location unknown. Comment
  HSC100117  Pleuricospora fimbriolata Rudolf W. Becking 1972-6-30 720608 Humboldt Fish Lake area, Orleans 762 Comment
  HSC102147  Pleuropogon refractus M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-3 1054 Humboldt Patterson Meadows 1555 Comment
  HSC57304  Pleuropogon refractus G. L. Clifton 1979-7-31 11859 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  UC180505  Pleuropogon refractus Joseph P. Tracy 1914-7-4 4529 Humboldt Bald Mountain, High Prairie Bald Mountain; Northern Coast Ranges, Bald Mountain 1066 Comment
  UCD90108  Pleuropogon refractus Joseph P. Tracy 1951-6-26 19560 Humboldt halfway between Snow Camp and Twin Lakes (at Charley Preston's old gate near the road.) Comment
  UC525625  Poa annua Joseph P. Tracy 1934-3-11 13148 Humboldt Weitchpec 121 Comment
  UCD90384  Poa annua G. L. Stebbins Jr. 1942-6-2 3622 Humboldt 4 miles north of Bridgeville. Comment
  HSC10638  Poa bolanderi J. P. Tracy 1932-7-12 10464 Humboldt Trinity Summit, head of Brett Hole. 1829 Comment
  UCD90568  Poa bolanderi Joseph P. Tracy 1937-7-29 15581 Humboldt South Fork Mountain near McKay camp. 1676 Comment
  HSC10672  Poa compressa J. P. Tracy 1925-7-5 7182 Humboldt High Prairie on Bald Mtn. 1067 Comment
  HSC10694  Poa douglasii J. W. Johnson 1961-9-4 1101 Humboldt Christenson Farm, Samoa Peninsula, Arcata. Comment
  UC1145142  Poa douglasii Joseph P. Tracy 1917-5-30 4799 Humboldt at Little River Ocean Beach; Northern Coast Region Comment
  UC665695  Poa douglasii H. E. Parks May, 1934 4805 Humboldt Little River Lagoon Comment
  POM161908  Poa howellii Joseph P. Tracy 1921-4-24 5451 Humboldt Phillipsville. Facing south fork of Eel River. 91 Comment
  UC525628  Poa howellii Joseph P. Tracy 1929-7-4 8619 Humboldt French Camp Ridge; Northern Coast Ranges 1066 Comment
  UC60806  Poa howellii Joseph Burtt Davy and Walter C. Blasdale 1899-6-9 5359 B Humboldt near Harris Harris Comment
  SEINET10855127  Poa kelloggii Joseph P. Tracy 1911-6-4 Tracy 3219 Humboldt Along Little River Humboldt County 5 miles from the coast. Comment
  HSC10693  Poa macrantha J. W. Johnson 1961-9-3 1080 Humboldt Arcata, Christenson Farm, Samoa Peninsula. Comment
  UCD91934  Poa pratensis A. H. Murphy 1947-6-10 s.n. Humboldt Fulton's Ranch, Bald Mtn. ca. 7 miles east of Blue Lake. Comment
  UC1103181  Poa pratensis subsp. pratensis Joseph P. Tracy 1913-6-19 4206 Humboldt opposite Buck Mt (Dinsmore's Ranch); Northern Coast Ranges, valley of Van Duzen River 762 Comment
  SEINET200627 Image available Poa scabrella Joseph P. Tracy 1912-7-31 395 Humboldt Buck Mountain,near the summit Comment
  HSC40517  Poa secunda subsp. secunda Thomas W. Nelson, Jane P. Nelson 1976-6-22 2876 Humboldt Area at Goat Hill. 1666 Comment
  UC1145124  Poa secunda subsp. secunda Joseph P. Tracy 1936-5-29 14822 Humboldt French Camp Ridge 1066 Comment
  RSA129470  Poa trivialis H. S. Yates 1936-6-16 5683 Humboldt Near Bayside 9 Comment
  UC1145116  Poa trivialis Joseph P. Tracy 1943-7-18 17435 Humboldt Big Lagoon 9 Comment
  HSC10812  Poa unilateralis R. D. Rogers 1964-4-16 5 Humboldt Patricks Point State Park. Comment
  UC17439  Polygala californica C. C. Marshall 1888-1 Humboldt Eel River Region Comment
  RSA75592  Polygala californica Albert M. Vollmer, L. Beane 1951-6-6 127 Humboldt On road between Orick and Weitchpec. Comment
  HSC54552  Polygala cornuta Overton, Butler 1979-7-24 9554 Humboldt Near Titlow Hill, close to the town of Willow Creek 1097 Comment
  HSC72626  Polygala cornuta J. P. Smith, J. O. Sawyer 1977-7-1 9226 Humboldt Six Rivers National Forest, Bluff Creek Campground. 76 Comment
  HSC41294  Polygala cornuta Brad Klipfel 1974-7-27 494 Humboldt Horse Mtn. Comment
  UC1198990  Polygala cornuta var. cornuta Joseph P. Tracy 1911-7-6 3348 Humboldt mountain slopes along road between Three Creeks and mouth of Willow Creek; Northern Coast Ranges 762 Comment
  UC17454  Polygala cornuta var. cornuta Harley P. Chandler June, 1901 1502 Humboldt Klamath River North Coast Ranges 426 Comment
  UC902121  Polygala cornuta var. cornuta Joseph P. Tracy 1946-7-28 17622 Humboldt Willow Creek Trinity River Valley 152 Comment
  HSC100599  Polygala cucullata Carl C. Marshall Jun 1887 408 Humboldt Dobbyn's Creek. Comment
  UC146191  Polygonum californicum Joseph P. Tracy 1908-6 2922 Humboldt opposite Buck Mountain; Northern Coast Ranges, Valley of Van Duzen River 304 Comment
  JEPS50522  Polygonum convolvulus Chesnut and Drew 1888-7-28 Humboldt Grouse Creek Comment
  UC672966  Polygonum davisiae Joseph P. Tracy 1935-7-24 14181 Humboldt near Ranger Station; Trinity Summit 1828 Comment
  HSC55014  Polygonum douglasii Overton, Butler 1979-7-31 11405 Humboldt Near Water Dog Lakes, close to the town of Hoopa 1830 Comment
  HSC43417  Polygonum paronychia R. Sutherland 1978-2-18 1 .18278 Humboldt Mouth of Mattole River 8 Comment
  POM232027  Polygonum paronychia I. L. Wiggins 1930-7-11 4685 Humboldt Near Samoa Comment
  UC132196  Polygonum persicaria J. P. Tracy 1904-7-1 2105 Humboldt Immediate vicinity of Eureka 0 Comment
  RSA46700  Polypodium californicum Doris K. Kildale 1928-2-19 4262 Humboldt Little River near Trindad Comment
  HSC39942  Polypodium glycyrrhiza Linda M. Barker 1976-3-11 1328 Humboldt 3 mi. W of Arcata Comment
  SEINET200791 Image available Polypodium glycyrrhiza Joseph P. Tracy 1914-5-14 4429 Humboldt Fort Seward 122 Comment
  UC71485  Polypodium glycyrrhiza Mrs. M. H. Manning 1901-1 Humboldt Hupa Valley Comment
  UC812497  Polypodium glycyrrhiza Eliz. Parsons Hawver June 1915 Humboldt Carlotta Comment
  CAS-BOT-BC76847  Polypodium glycyrrhiza Doris K. Kildale 1928-12-30 6766 Humboldt Pillipsville Comment
  HSC78979  Polypodium glycyrrhiza L. P. Janeway 1984-12-5 1194 Humboldt N Spit of Humboldt Bay, W side Samoa Rd. near the boat ramp 5 Comment
  CAS-BOT-BC72082  Polypodium scouleri Ira L. Wiggins 1930-7-11 4686 Humboldt near Samoa Comment
  JEPS82390  Polypogon interruptus A. S. Hitchcock 1915-7-13 839 Humboldt Eureka Comment
  RSA10020  Polypogon interruptus Joseph P. Tracy 1927-7-16 8259 Humboldt Eureka. 0 Comment
  UC1145080  Polypogon interruptus Joseph P. Tracy 1938-8-28 16137 Humboldt Trinidad; Coast bluffs, Trinidad 6 Comment
  HSC74744  Polystichum imbricans Gail Newton 1981-8-7 2425 Humboldt Near Bug Creek Butte 1244 Comment
  HSC1153  Polystichum munitum Paul Shields 1955-6-10 Humboldt 3 mi. S of Weott Comment
  HSC41301  Polystichum munitum Brad Klipfel 1974-7-27 500 Humboldt Horse Mtn. Comment
  HSC95887  Polystichum munitum Will Ferrand 2002-4-20 26 Humboldt 9 mi. E of int. of West End Rd. and Warren Cr. Rd. 67 Comment
  HSC98514  Polystichum munitum Cara Witte 2008-7-10 857 Humboldt Brays Opening on National Forest 1. 0.5 mi. north of intersection with Forest Service Road 4N38. 1393 Comment
  RSA430488  Polystichum munitum Lyman Benson 1928-7-9 409 Humboldt Weott Ranger Station. Seaward N coast. Watershed- South Fork Eel Rivers. 61 Comment
  HSC13800  Populus trichocarpa Steve Dorei 1970-10-13 41 Humboldt HSU campus, S side of Forestry Bldg. Comment
  UC176692  Populus trichocarpa Joseph P. Tracy 1913-6-22 4261 A Humboldt opposite Buck Mountain (Dinsmore's Ranch); Northern Coast Ranges, valley of Van Duzen River 762 Comment
  HSC36290  Potamogeton natans W. C. Vinyard 1974-1 Humboldt N Clam Beach Pond Comment
  HSC86453  Potamogeton natans D. K. Imper 1987-5-3 Humboldt Fish Lake 915 Comment
  SEINET3892866  Potamogeton natans Marla J. Carollo 1979-5-17 086 Humboldt East of Little River Beach State Park, so. of Hwy 101.; 0 Comment
  HSC18720  Potentilla anserina subsp. pacifica Francis Winter 1960-4-30 Humboldt Samoa Peninsula, 6 mi. W of Arcata. Comment
  HSC18733  Potentilla anserina subsp. pacifica W. R. Brigham 1962-5-19 13 Humboldt S of Big Lagoon. Comment
  HSC18734  Potentilla anserina subsp. pacifica R. E. Hafenfeld 1965-5-9 13 Humboldt Near Squashan Cr. near Gold Bluff Beach Rd. Comment
  UC154225  Potentilla anserina subsp. pacifica Joseph P. Tracy 1907-7-20 2590 Humboldt near Samoa (region about Humboldt Bay); Northern Coast Region, Region about Humboldt Bay 0 Comment
  HSC95655  Potentilla anserina subsp. pacifica Andrea Pickart 2002-4-22 52 Humboldt Lanphere Dunes, upper edge of Mad River Slough 10 Comment
  UC492176  Potentilla drummondii Joseph P. Tracy 1932-7-10 10391 Humboldt wet meadow at Corral Prairie (Trinity Summit); Klamath Mountains, Trinity Summit 1524 Comment
  HSC98450  Potentilla gracilis John Rehling 1974-7-12 11 .5 Humboldt Near the Bald Hills Rd., 23.5 mi. from Hwy. 101 Comment
  RSA21654  Potentilla gracilis Carl B. Wolf 1937-6-14 8809 Humboldt North coast range, 1.5 miles N of Kneeland Prairie 823 Comment
  HSC99485  Potentilla gracilis var. gracilis K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-14 144 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
  UC154515  Potentilla gracilis var. gracilis Harley P. Chandler June, 1901 1390 Humboldt Hupa Indian Reservation North Coast Ranges, , Hupa Valley (Hupa Valley) 152 Comment
  CAS-BOT-BC158497  Potentilla gracilis var. gracilis Carl B. Wolf 1934-7-2 5859 Humboldt 5 1/2 mi. from Bald Mt. on road to Snow Camp 914 Comment
  HSC97913  Prosartes hookeri Cara Witte 2007-6-13 268 Humboldt Along Forest Service Rd. 5N04. Approximately 1 mile east of intersection to Grouse Mountain Lookout. 1534 Comment
  HSC99393  Prosartes hookeri K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-6-28 42 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  HSC15462  Prosartes hookeri T. W. Beck 1963-5-10 46 Humboldt Camp Bauer, Korbel Comment
  HSC15483  Prosartes smithii R. E. Hafenfeld 1965-5-9 66 Humboldt Fern Canyon, Gold Bluff Beach Comment
  HSC15484  Prosartes smithii W. R. Brigham 1962-5-20 16 Humboldt Side of Old Hwy. 101, N of Big Lagoon rd. Comment
  CAS-BOT-BC517502  Prosartes smithii Volney Rattan 1882-6-1 s.n. Humboldt Unspecified Comment
  CAS-BOT-BC517508  Prosartes smithii Ynez Whilton Winblad 1941-6-25 s.n. Humboldt Between Garberville and Pepperwood Comment
  HSC100507  Prunella vulgaris Carl C. Marshall Jun 1886 249 Humboldt Everywhere. Comment
  HSC27044  Prunella vulgaris subsp. lanceolata Brad Klipfel 1973-8-25 291 Humboldt Near Lazy L Ranch, Fickle Hill Rd. Comment
  HSC99544  Prunella vulgaris var. lanceolata K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-8-10 209 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  UC1196731  Prunella vulgaris var. lanceolata Joseph P. Tracy 1930-8-17 9162 Humboldt Big Lagoon; Northern Coast Region, Big Lagoon 6 Comment
  UC1321003  Prunella vulgaris var. lanceolata Andrew P. Nelson 1960-7-21 636 Humboldt s Weott (Burlington Residence Area and Campground, Humboldt Redwoods State Park); Humboldt Redwoods State Park Comment
  UC1402062  Prunella vulgaris var. lanceolata Andrew P. Nelson 1960-7-19 627 -53 Humboldt Comment
  CAS-BOT-BC159974  Prunus emarginata Mrs. H. C. Cantelow 1939-6-8 s.n. Humboldt South Fork Mts. Blake Lookout Road, 7.2 miles from Junction Alton. Red Bluff Highway Comment
  CAS-BOT-BC159987  Prunus emarginata Doris K. Kildale 1927-7-22 3813 Humboldt Lassecks Peaks 1661 Comment
  HSC39624  Prunus emarginata Thomas W. Nelson, Jane P. Nelson 1976-6-15 2728 Humboldt Along old trail from lookout to Blocksburg 1585 Comment
  HSC48828  Prunus emarginata Brad Klipfel, J. P. Smith, J. O. Sawyer 1973-5-27 42 Humboldt Grogan's Hole near N Trinity Mtn. 1829 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
  UC902151  Prunus emarginata Joseph P. Tracy 1944-5-20 17473 Humboldt Eureka, on 2nd St. between K and L Sts Eureka 9 Comment
  UC1198776  Prunus subcordata Joseph P. Tracy 1932-6-14 19142 Humboldt Trinity River Valley near the South Fork; Northern Coast Ranges, Trinity River Valley 182 Comment
  CAS-BOT-BC357603  Pseudognaphalium stramineum Carl D. Duncan 1920-9-22 s.n. Humboldt Hoopa Valley Comment
  CAS-BOT-BC357604  Pseudognaphalium stramineum L. R. Abrams 1916-7-18 6090 Humboldt Arcata to Trinidad Comment
  UC604670  Pseudognaphalium thermale Joseph P. Tracy 1938-8-14 16111 Humboldt at Willow Creek Trinity River Valley, Willow Creek 152 Comment
  UCD20403  Pseudognaphalium thermale Donald C. Hagar 1957-8-15 199 Humboldt 4.5 miles NE of Salyer, Cedar Creek Divide, 3500 ft. elev. 1066 Comment
  UC1222910  Psilocarphus oregonus Joseph P. Tracy 1946-5-30 17542 Humboldt 5 mi e Carlotta (by old Strong's District School House, Riverside Park nearby) 60 Comment
  UC582502  Psilocarphus tenellus Joseph P. Tracy 1937-6-20 15339 Humboldt 10.0 mi up stream mouth of Bear River; Bear River 152 Comment
  UC1222909  Psilocarphus tenellus Joseph P. Tracy 1946-5-30 17543 Humboldt 5 mi e Carlotta (by old Strong's District School House, and at Riverside Park nearby) 60 Comment
  UC1223167  Psilocarphus tenellus Joseph P. Tracy 1950-5-30 18713 Humboldt Willow Creek Trinity River Valley 152 Comment
  HSC36438  Pteridium aquilinum var. pubescens John Rehling 1974-7-8 6 Humboldt County park at Big Lagoon Comment
  RSA275352  Pteridium aquilinum var. pubescens J. P. Smith, Steve Selva 1970-6-14 3855 Humboldt Along Calif. 96 at Whitmore Creek. 152 Comment
  CAS-BOT-BC460505  Pterospora andromedea Doris K. Kildale 1927-7-23 3794 Humboldt Hoaglin Lake, near Lasseck's Peaks 1524 Comment
  UC642278  Pteryxia terebinthina var. californica Joseph P. Tracy 1929-6-3 8600 Humboldt Trinity Rivery Valley, at Willow Creek 152 Comment
  SEINET200714  Pyrola americana J. P. Tracy 1901-6-30 1191 Humboldt Immediate vicinity of Eureka 0 Comment
  HSC61130  Pyrola aphylla T. Jimerson, J. Pageau 1979-6-13 554 Humboldt Near Slate Creek Butte, close to the town of Orleans 549 Comment
  SBBG5361  Pyrola aphylla H. and M. Dearing 1939-6-28 3731 Humboldt near Dinsmore Comment
  HSC17978  Pyrola aphylla Chestnut, Drew 1888-7-12 Humboldt Campbell's Comment
  HSC69767  Pyrola aphylla Thomas W. Nelson, Jane Nelson 1977-9-3 3715 Humboldt J.E. Losey property above junction of Kneeland-Maple Creek Rd. 671 Comment
  RSA0080627  Pyrola dentata S. S. Tillett 1956-7-6 617 Humboldt 11 mi. from Orlenas, on Bar Shanty Road. 1159 Comment
  RSA0080453  Pyrola picta C. B. Wolf 1937-8-13 9259 Humboldt North coast range, 11 mi. E. of Hoopa Valley on new road toward Trinity Summit. 1524 Comment
  SD42325  Pyrola secunda Carl B. Wolf 1937-8-13 9264 Humboldt North Coast Range, 12 mi. E. of Hoopa Valley on New Road towards Trinity Summit 1676 Comment
  UC275588  Quercus chrysolepis Joseph P. Tracy 1924-8-31 6845 Humboldt Klamath River at Bluff Creek Northern Coast Ranges 91 Comment
  CAS-BOT-BC94313  Quercus garryana Doris K. Kildale 1928-7-1 5666 Humboldt Klamath River at Bluff Creek Comment
  HSC68613  Quercus kelloggii Jacqueline Greenleaf 1980-7-16 248 Humboldt Near Buck Mountain. 1250 Comment
  UC275512  Quercus kelloggii Joseph P. Tracy 1923-9-10 6543 Humboldt near The South Fork; Northern Coast Ranges, Trinity River Valley 182 Comment
  UCD47218  Quercus sadleriana D. Sanchez-Mata 1997-9-20 s.n. Humboldt Hoopa. Big Hill Lookout Road. Successional shrubland plant communitites on logged Douglas fir forests. 1230 Comment
  CAS-BOT-BC104535  Quercus vacciniifolia Carl B. Wolf 1927-8-28 1173 Humboldt On grade 9 mi from Willow Creek, Lord Ellis Road to Blue Lake Comment
  CAS-BOT-BC104537  Quercus vacciniifolia Doris K. Kildale 1928-10-7 6747 Humboldt Willow Creek Canyon 7 miles from mouth Comment
  UC1196529  Quercus vacciniifolia Joseph P. Tracy 1949-8-26 18526 1/2 Humboldt 2 mi e Grove's Prairie; North Coast Ranges, Trinity Summit 1524 Comment
  UC1196535  Quercus vacciniifolia Joseph P. Tracy 1947-7-9 17844 Humboldt Horse Mountain 1432 Comment
  UCR32169  Quercus vacciniifolia David J. Keil 1983-7-2 17324 Humboldt c. 4 mi SE of SR 299 along Titlow Hill Rd below Horse Mountain Summit Road Comment
  UC1222294  Quercus wislizeni Joseph P. Tracy 1950-6-15 18796 Humboldt 7 mi n Harris; Mail Ridge Comment
  HSC100904  Ranunculus Carl C. Marshall Apr 1886 87 Humboldt Humboldt Hill. Comment
  HSC56056  Ranunculus alismifolius var. hartwegii G. L. Clifton, Griswold 1979-7-31 11674 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1805 Comment
  HSC56169  Ranunculus alismifolius var. hartwegii G. L. Clifton, Griswold 1979-8-1 12060 Humboldt Near N Trinity Mtn., close to the town of Hoopa. 1798 Comment
  UC118293  Ranunculus aquatilis var. hispidulus W. W. Price 1890-6-30 Humboldt Jarnigans Comment
  UC13971  Ranunculus flabellaris Chesnut and Drew 1888-8-1 Humboldt near Grouse Creek (pond) Comment
  JEPS5884  Ranunculus flammula Joseph P. Tracy 1937-7-17 15436 Humboldt Eureka 45 Comment
  POM269622  Ranunculus flammula var. ovalis Joseph P. Tracy 1934-7-13 13390 Humboldt Dow's Prairie Comment
  JEPS79959  Ranunculus occidentalis Joseph P. Tracy 1932-7-18 10701 Humboldt head of Brett Hole Klamath Mountains, Trinity Summit 1828 Comment
  UC162863  Ranunculus occidentalis Joseph P. Tracy 1908-6 2689 Humboldt opposite Buck Mountain; Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  JEPS55183  Ranunculus occidentalis W. L. Jepson 1902-6-20 1895 Humboldt Fort Seward Ranch Ridge Comment
  UC1196235  Ranunculus occidentalis Joseph P. Tracy 1902-6-3 1671 Humboldt ridge between Harris and Fruitland; Northern Coast Ranges 762 Comment
  HSC73606  Ranunculus occidentalis var. occidentalis M. A. Baker 1980-7-22 3118 Humboldt Near Grogan Hole. 1676 Comment
  HSC39246  Ranunculus occidentalis var. occidentalis J. P. Smith, J. O. Sawyer 1976-5-2 8633 Humboldt Redwood Creek-Hoopa Rd., 0.6 mi. W of its junction with Loop Rd. in Hoopa Reservation 122 Comment
  UC1196245  Ranunculus orthorhynchus var. orthorhynchus Joseph P. Tracy 1933-7-11 12701 Humboldt Grouse Mountain North Coast Ranges 1524 Comment
  UC162864  Ranunculus orthorhynchus var. orthorhynchus Joseph P. Tracy 1909-5-31 2982 Humboldt Eureka Comment
  UC249653  Ranunculus orthorhynchus var. orthorhynchus Joseph P. Tracy 1922-5-21 6050 Humboldt Fieldbrook Northern Coast Ranges 60 Comment
  UCD97062  Ranunculus orthorhynchus var. platyphyllus R. N. Raynor 1935-5-22 s.n. Humboldt Fort Seward. Comment
  UC1103015  Ranunculus parviflorus Harry B. Tucker 1933-6-13 Humboldt near Ferndale 15 Comment
  CDA3497  Ranunculus parviflorus E. C. Whitney 1962-5-29 Humboldt Millsap property, Pepperwood. 0 Comment
  HSC95591  Ranunculus repens Andrea Pickart 2002-3-31 24 Humboldt Arcata Marsh, Dan Hauser Marsh 0 Comment
  HSC18186  Ranunculus repens var. repens R. D. Modafferi 1965-5-9 55 Humboldt 2.2 mi. N of Trinidad on Trinity St. 305 Comment
  HSC71213  Ranunculus sardous Thomas W. Nelson, Doris K. Niles 1979-5-19 4696 Humboldt Tidal marsh at mouth of Eel River, Crab Park, N of County Park. Comment
  JEPS81053  Ranunculus sardous Thomas Nelson and Doris Niles 1979-5-19 4696 Humboldt Crab Park Ferndale Quad., Eel River (tidal marsh mouth of river, n of County Park) Comment
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Sep 9 2008
  HSC55295  Ranunculus uncinatus Griswold, Butler 1979-7-10 6337 Humboldt Near Board Camp Mtn., close to the town of Willow Creek 1372 Comment
  HSC55698  Ranunculus uncinatus Overton, Butler 1979-7-26 10022 Humboldt Near White Rock Spring, close to the town of Willow Creek 1554 Comment
  HSC56212  Ranunculus uncinatus G. L. Clifton, Griswold 1979-8-2 12220 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  UC668156  Rhamnus californica Joseph P. Tracy 1933-9-3 13062 Humboldt Willow Creek Trinity River Valley 152 Comment
  RSA2937  Rhamnus californica subsp. occidentalis Carl B. Wolf 1931-8-30 2377 Humboldt On grade from Willow Creek to Blue Rahe, 9 miles above Willow Creek (Lord Ellis Road). 305 Comment
  UC668149  Rhamnus purshiana Joseph P. Tracy 1933-6-7 12525 Humboldt Bridgeville 198 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
  CAS-BOT-BC56614  Rhododendron macrophyllum Ella Dales Cantelow 1936-5-17 1235 Humboldt 9 mi. e. of Orick Comment
  CAS-BOT-BC56615  Rhododendron macrophyllum Clarence R. Quick 1959-7-24 59 -24 Humboldt Bee Mt., ca. 12 miles southwest of Orleans Comment
  UC1121090  Rhododendron macrophyllum A. E. Wieslander 1931-5-17 195 Humboldt Orick-Orleans Road Comment
  UC562737  Rhododendron occidentale Joseph P. Tracy 1929-7-4 8609 Humboldt French Camp Ridge 1066 Comment
  UCSB21216  Rhododendron occidentale Keefe, Joseph 1967-7-8 Humboldt South edge of Big Lagoon, 20 miles north of Eureka 1 Comment
  CAS-BOT-BC200386  Rhododendron occidentale var. paludosum Myrtle Paulson 1918-4-28 s.n. Humboldt Eureka Comment
  CDA21386  Rhododendron occidentale var. paludosum G. F. Hrusa, T. D. Wilfred, N. Kang 1992-5-4 9401 Humboldt North Coast Ranges; Stagecoach Hill on Kane Rd. above and immed. NW of Big Lagoon and SE of Stone Lagoon. 158 Comment
  RSA171949  Rhododendron occidentale var. paludosum R. F. Thorne 1957-9-3 19025 Humboldt Patrick's Point State Park. Comment
  RSA0062952  Rhododendron occidentale var. paludosum C. B. Wolf 1934-7-2 5905 Humboldt 4.5 miles from Snow Camp on road to Bald Mt (Mtns E of Korbel). 1067 Comment
  HSC99357  Ribes binominatum K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-6-24 6 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  UC492203  Ribes binominatum Joseph P. Tracy 1932-7-13 10487 Humboldt near Corral Prairie; Klamath Mountains, Trinity Summit 1524 Comment
  BLMAR292  Ribes bracteosum Jeanne McFarland 2001-5-8 292 Humboldt Headwaters Forest Reserve, growing along streambank 335 Comment
  SJSU10506  Ribes divaricatum K. K. Lind 1978-2-14 Humboldt Boise Cr Campground, Hwy 299 near community of Willow Cr, Six Rivers National Forest Comment
  UC1198917  Ribes lacustre Joseph P. Tracy 1936-8-7 15095 Humboldt head of Little Hors-Linto Creek; Trinity Summit 1371 Comment
  CAS-BOT-BC176807  Ribes laxiflorum Doris K. Kildale 1927-4-10 3080 Humboldt Prairie Creek, north of Orick Comment
  CAS-BOT-BC173359  Ribes lobbii Peter H. Raven; R. Snow 1958-7-20 11632 Humboldt 12.8 miles south-west of United States 299 on Friday Ridge Road to Grouse Mountain, 0.2 miles north-east of Titlow Hill road junction Comment
  JEPS49355  Ribes lobbii W. L. Jepson 1902-7-16 2044 Humboldt Trinity Summit 2133 Comment
  RSA0021632  Ribes malvaceum L. R. Abrams, R. C. Bacigalupi 1922-6-25 8293 Humboldt Bluffs north of Big Lagoon. Comment
  CAS-BOT-BC212478  Ribes marshallii Doris K. Kildale 1925-8-18 1204 Humboldt Trinity Summit 1917 Comment
  CAS-BOT-BC206041  Ribes menziesii Joseph P. Tracy 1948-3-6 17953 Humboldt Trinidad 60 Comment
  UC154122  Ribes menziesii J. P. Tracy 1904-7-31 2131 Humboldt immediate vicinity Eureka 0 Comment
  UC552232  Ribes menziesii Joseph P. Tracy 1934-8-11 13565 Humboldt 2 mi e Arcata (Fickle Hill); North Coast Ranges 304 Comment
  UC552244  Ribes menziesii Joseph P. Tracy 1934-8-11 13565 Humboldt 2 mi e Arcata (Fickle Hill); North Coast Ranges 304 Comment
  HSC20326  Ribes roezlii Doris K. Kildale 1926-6-27 2232 Humboldt Little Van Duzen River, at bridge on Bridgeville-Red Bluff Rd. Comment
  UC492204  Ribes roezlii Joseph P. Tracy 1930-8-3 9144 Humboldt opposite Buck Mountain (Dinsmore's Ranch); Northern Coast Ranges, Van Duzen River 670 Comment
  CAS-BOT-BC198898  Ribes roezlii var. cruentum Joseph P. Tracy 1934-3-11 13153 Humboldt French Camp Ridge 1066 Comment
  CAS-BOT-BC198900  Ribes roezlii var. cruentum L. R. Abrams 1918-6-16 7198 Humboldt Willows Creek Comment
  HSC20349  Ribes roezlii var. cruentum Eugene Andreuccetti 1964-5-2 39 Humboldt 5 mi. from Willow Creek on Hwy. 299 Comment
  JEPS49459  Ribes roezlii var. cruentum Joseph P. Tracy 1922-4-30 6041 Humboldt mountain slopes along road between Three Creeks and Mouth of Willow Creek; Northern Coast Ranges, Three Creeks 670 Comment
  UC249624  Ribes roezlii var. cruentum Joseph P. Tracy 1922-4-30 6041 Humboldt Three Creeks, along road between Three Creeks and mouth of Willow Creek Northern Coast Ranges 670 Comment
  UC667061  Ribes roezlii var. cruentum Joseph P. Tracy 1934-3-11 13153 Humboldt French Camp Ridge 1066 Comment
  CAS-BOT-BC212522  Ribes sanguineum C. V. Piper 1921-5-22 s.n. Humboldt Eureka Comment
  HSC39630  Ribes sanguineum Thomas W. Nelson, Jane P. Nelson 1976-6-15 2736 Humboldt Just W of Goat Hill along road off FS 2S08 1463 Comment
  UC1541336  Ribes sanguineum Harold E. Parks February 1934 4827 Humboldt Spruce Cove Trinidad Comment
  UC492209 Image available Ribes sanguineum Joseph P. Tracy 1927-6-12 8155 Humboldt lower slopes Horse Mountain; Northern Coast Ranges 1219 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
  RSA0019531  Ribes sanguineum R. D. Zortman 1963-4-7 17 Humboldt 5 miles NE of Arcata; south of the Mad River, off Warren Creek Rd. 91 Comment
  RSA0018241  Ribes sanguineum var. glutinosum Lincoln Constance, R. C. Rollins 1942-5-11 2866 Humboldt Near summit 8 miles east of Blue Lake. Comment
  HSC102023  Ribes viscosissimum M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-12 924 Humboldt Along trail from Rustic Camp to Patterson Meadows 1534 Comment
  HSC56118  Ribes viscosissimum Gilbert Muth 1979-8-1 11895 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1877 Comment
  HSC75512  Ribes viscosissimum J. O. Sawyer, R. J. Cole 1977-7-3 3023 Humboldt Environs of Mud Spring, Big Hill Rd. (FS Rd. 8N01) 1524 Comment
  SEINET200854 Image available Ribes viscosissimum J. P. Tracy 1932-7-12 10466 Humboldt Klamath Mountains Trinity Summit rdiges east of Corral Prairie 1829 Comment
  UC673061  Robinia pseudoacacia Joseph P. Tracy 1934-7-1 13277 Humboldt Willow Creek; Northern Coast Ranges, Trinity River Valley 152 Comment
  HSC26800  Romanzoffia californica Thomas W. Nelson 1971-4-24 404 Humboldt Willow Creek Comment
  HSC84930  Romanzoffia californica R. N. Raynor 1935-4-8 Humboldt Fort Seward Comment
  HSC6899  Rorippa curvisiliqua D. E. Anderson 1961-9-30 1844 Humboldt Divide Lake Comment
  CHSC33401  Rosa gymnocarpa J. O. Sawyer; R. J. Cole 1977-7-3 3018 Humboldt Along Big Hill Road (8N01) at Mud Spring. Comment
  HSC19646  Rosa gymnocarpa D. E. Anderson 1965-5-15 3711 Humboldt Along Hwy. 96, 1.9 mi. N of Willow Creek Comment
  UC1199037  Rosa gymnocarpa var. serpentina Joseph P. Tracy 1939-8-16 16404 Humboldt Horse Mountain 1432 Comment
  HSC31560  Rosa nutkana Glenn McGourty 1974-6-1 77 Humboldt Comment
  UCD113888  Rosa nutkana H. P. Olmo 1931-6-8 s.n. Humboldt 5 miles north of Trinidad, Redwood Highway. Comment
  UC12845  Rosa nutkana subsp. macdougalii J. Burtt Davy 1899-6-13 5492 Humboldt along river near Camp Grant; Eel River Comment
  UC467670  Rosa nutkana subsp. macdougalii Joseph Burtt Davy and Walter C. Blasdale 1899-5 5492 Humboldt on river near Camp Grant; Eel River Comment
  CAS-BOT-BC148345  Rosa pisocarpa Joseph P. Tracy 1933-7-25 12898 Humboldt Grouse mt. 1524 Comment
  CAS-BOT-BC148347  Rosa pisocarpa Doris K. Kildale 1928-6-24 5238 Humboldt Redwood Creek at Berry's 289 Comment
  UC154494  Rosa pisocarpa Harley P. Chandler June 1901 1544 Humboldt Klamath River North Coast Ranges 457 Comment
  UC667035  Rosa pisocarpa Joseph P. Tracy 1933-8-30 13020 Humboldt Grouse Mt. 1432 Comment
  RSA244511  Rubus discolor Larry E. DeBuhr, Gary D. Wallace 1973-9-16 s.n. Humboldt Near entrance of Prairie Creek Redwoods State Park Comment
  HSC58235  Rubus leucodermis Walter Overton 1979-8-1 12392 Humboldt Near Mill Creek, Middle Fork, close to the town of Hoopa. 1341 Comment
  RSA46847  Rubus leucodermis Doris K. Kildale 1927-7-3 3662 Humboldt Willow Creek Flat. Comment
  CAS-BOT-BC147243  Rubus parviflorus Doris K. Kildale 1926-5-14 3196 Humboldt Big Lagoon Comment
  HSC19659  Rubus parviflorus W. R. Brigham 1962-5-20 15 Humboldt Side of Old Hwy. 101, N of Big Lagoon rd. Comment
  HSC89428  Rubus parviflorus P. A. Daly 1984-5-6 1 Humboldt Trinidad Head 61 Comment
  HSC97621  Rubus parviflorus Cara Witte 2007-6-5 212 Humboldt Near Grouse Mountain. Along Forest Service Road 4N32. Approximately 1 mile south of intersection with 5N04. 1434 Comment
  UC535747  Rubus parviflorus Eleanor Armstrong 1934-7-3 1166 Humboldt Richardson Grove 121 Comment
  CHSC19742  Rubus spectabilis Gary J. Stebbins 1970-2-21 9 Humboldt Patricks Point State Park. Comment
  RSA245291  Rubus spectabilis J. D. Ackerman, A. M. Montalvo 1973-3-27 41 Humboldt 1.5 miles N of Manila Comment
  SEINET3111191  Rubus spectabilis Steve Selva, Roger Jensen 1974-8-21 27 Humboldt Approx 3 miles N of Trinidad; redwood grove adjacent to Hwy 101 rest stop. Comment
  UC1199047  Rubus spectabilis Joseph P. Tracy 1939-7-9 16336 Humboldt Snow Camp 1402 Comment
  UC1281057  Rubus spectabilis H. E. McMinn 1931-6-28 2545 Humboldt Orich Requa; Orich to Requa Comment
  UC14181  Rubus spectabilis W. C. Blasdale 1896-5-31 Humboldt Eureka Comment
  CAS-BOT-BC158793  Rubus ursinus Kenneth Clark 1980-6-14 683 Humboldt Upper alluvial terrace of north fork Dead Man's Gulch, Shelter Cove 106 Comment
  UC154255  Rubus ursinus J. P. Tracy 1904-7-31 2133 Humboldt immediate vicinity Eureka; immediate vicinity of Eureka 0 Comment
  UC666164  Rubus ursinus S. W. Brown 1942-6-13 42011 Humboldt 10.1 mi n Fortuna (on U.S. Hwy 99); ; Fortuna, Humboldt Co. Comment
  UCD17618  Rubus ursinus H. Olmo; T. S. Mallah 1946-6-26 46- 046 Humboldt California. Humboldt County: 6.6 miles north of Ettersburg on road to Honeydew. Comment
  UCD17844  Rubus ursinus H. Olmo 8-10 May 1962 62- 31 Humboldt California. Humboldt County: 9 miles east of Carlotta. Comment
  RSA20785  Rudbeckia occidentalis C. B. Wolf 1937-8-13 9250 Humboldt North Coast Range, 11 miles E of Hoopa Valley on new road towards Trinity Summit 1524 Comment
  SEINET5710904  Rudbeckia occidentalis Lowell E. Urbatsch, Patricia B. Cox; Alan W. Lievens 1988-1 6104 Humboldt From California 299 at Hawkins Bar (In Trinity County), turn onto the road to Denny and travel 1.7 miles down this road toa fork in the road. Take the lefthand road (leading to Waterman Ridge, Zeigler Point) and travel 6.7 miles down this road to antoher fork in the road. Take the right fork (away from thr road leading to Waterman Ridge and Willow Creek). On the road (7NO4), travel 1.5 miles to another fork; continue on 7NO4 (the left fork) for 7.4 miles. At this point, take 7 NO4N, the road to Groves Prairie. The collection site is a short distance up the road.; Groves Prairie Comment
  HSC17585  Rumex acetosella P. W. Shields 1955-6-10 Humboldt HSC campus Comment
  HSC76221  Rumex acetosella Overton, Butler 1979-7-24 9767 Humboldt Near Black Rock, close to the town of Willow Creek 1463 Comment
  RSA239769  Rumex acetosella Larry E. DeBuhr 1973-4-23 997 Humboldt Big Lagoon 10 miles S of Orick, SW end of lagoon Comment
  RSA256728  Rumex acetosella Linda M. Barker 1974-5-11 171 Humboldt Redwood National Park, Bald Hills road. 549 Comment
  CAS-BOT-BC421750  Rumex conglomeratus Carl B. Wolf 1927-8-30 1231 Humboldt 2 mi. s. of Petrolia on Matole River near point where road crosses river Comment
  RSA53799  Rumex conglomeratus H. M. Pollard 1945-8-24 s.n. Humboldt Between Orleans and Camp Creek Klamath River Canyon. Comment
  CAS-BOT-BC421525  Rumex crassus Doris K. Kildale 1926-6-29 2242 Humboldt Mouth of Mad River Comment
  UC1070542  Rumex occidentalis H. L. Person 1932-7-16 Humboldt hwy n of Trinidad; Rock Point Quad. Comment
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Aug 3 2007
  HSC17604  Rumex persicarioides D. E. Anderson 1961-9-13 1812 Humboldt Trinidad Beach Comment
  UC7023  Rumex pulcher H. N. Bolander Jun 1867 6568 Humboldt Shelter Cove Comment
  UC55429 Image available Rumex salicifolius var. transitorius J. P. Tracy 1901-6-20 1157 Humboldt immediate vicinity Eureka; ; vicinity of Eureka, Humboldt Co. 0 Comment
  CAS-BOT-BC434098  Rumex transitorius Carl D. Duncan 1920-9-22 s.n. Humboldt Hoopa Valley Comment
  UC160951  Rupertia physodes Harley P. Chandler June, 1901 1460 Humboldt Klamath River North Coast Ranges 304 Comment
  CAS-BOT-BC454159  Ruppia maritima Robert F. Thorne; P. Everett 1965-8-7 35208 Humboldt Samoa Peninsula: Elev. c. near sea level Comment
  HSC63070  Ruppia maritima David Wheeler 1979-5-31 146 Humboldt Arcata Bottoms, next to Mad River Slough Comment
  CAS-BOT-BC132707  Salix A. T. Whittemore 1979-4-5 79 -013 Humboldt Arcata, along Alliance Road immediately north of Arcata High School 6 Comment
  UC463039  Salix boothii Leland S. Smith 1931-9-16 2633 Humboldt Babbitt Spring; Jones Valley Range, Tahoe Nat'l Forest 2133 Comment
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Jul 10 2015
  SBBG58914  Salix exigua var. hindsiana H. E. Parks, J. P. Tracy 1931-5-17 971 Humboldt mouth of Willow Crk at Trinity River Comment
  UC511979  Salix exigua var. hindsiana Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-12 1248 Humboldt floodplain of Eel R. at Fernbridge Comment
  UC55406  Salix exigua var. hindsiana Harley P. Chandler June, 1901 1482 Humboldt Klamath R. North Coast Ranges, Klamath R. 365 Comment
  CAS-BOT-BC104096  Salix hindsiana Harold E. Parks; Joseph P. Tracy 1931-5-17 0975 Humboldt Mouth of Willow Creek at Trinity River 150 Comment
  CAS-BOT-BC106859  Salix hookeriana John Johnson 1962-4-1 1188 Humboldt Lanphere Ranch, about 4 miles west of Arcata Comment
  CAS-BOT-BC107716  Salix hookeriana Doris K. Kildale 1926-7-11 2364 Humboldt Mouth of Bear River - Capetown Comment
  CAS-BOT-BC107729  Salix hookeriana Harold E. Parks 1931-3-24 912 Humboldt Eel River, Fortuna 10 Comment
  CAS-BOT-BC107740  Salix hookeriana Joseph P. Tracy 1931-8-23 9616 Humboldt Sand dunes, near Samoa 6 Comment
  HSC19950  Salix hookeriana H. E. Parks Aug 1931 1057 Humboldt Bishop Pine Lodge, Trinidad 150 Comment
  HSC41657  Salix hookeriana Thomas W. Nelson 1977-11-3 3759 Humboldt Beside Martin's Slough just upstream from Eureka Muni Golf Course Comment
  HSC90466  Salix hookeriana Jean Hanson 1980-3-8 31 Humboldt Indian (Gunther) Island, Humboldt Bay, Eureka, W end of island Comment
  JEPS12908  Salix hookeriana Joseph P. Tracy 1927-3-13 7844 Humboldt mouth of Little River; Northern Coast Ranges 6 Comment
  JEPS12929  Salix hookeriana Joseph P. Tracy 1931-4-4 9329 Humboldt near Samoa; Northern Coast Region, Humboldt Bay 6 Comment
  LA208754  Salix hookeriana Harold E. Parks; 1931-5-28 1000 Humboldt Little River Lagoon, Trinidad; at sea level Comment
  RSA183589  Salix hookeriana R. D. Zortman 1963-3-9 11 Humboldt 5 miles NE of Arcata. S of the Mad River, off Warren Creek Rd. 91 Comment
  UC1196545  Salix hookeriana Joseph P. Tracy 1932-5-10 9951 Humboldt Mattole R. near Petrolia; North Coast Region, Mattole R. 15 Comment
  UC429548  Salix hookeriana Joseph P. Tracy 1904-7-17 2124 C Humboldt near Hydesville Hydesville; Northern Coast Region 60 Comment
  UC469122  Salix hookeriana Joseph P. Tracy 1927-5-1 7953 Humboldt sand dunes near Samoa; Northern Coast Region, Humboldt Bay 6 Comment
  UC481351  Salix hookeriana Harold E. Parks 1931-5-12 955 Humboldt Samoa Humboldt Bay, Samoa Comment
  UC490465  Salix hookeriana Joseph P. Tracy 1932-9-10 10767 Humboldt Mattole R. near Petrolia; North Coast Region, Mattole R. 15 Comment
  UC512090  Salix hookeriana Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-11 1217 Humboldt 1 mi s Samoa (pine barrens near coast) Comment
  UC490520  Salix laevigata Joseph P. Tracy 1932-4-23 9835 Humboldt between Miranda and Redway (S. Fork Eel R.); S. Fork Eel R. 91 Comment
  UC1196582  Salix lasiandra subsp. lasiandra Joseph P. Tracy 1942-9-6 17309 Humboldt near McKay Camp; S. Fork Mt. 1676 Comment
  UC490539  Salix lasiandra subsp. lasiandra Joseph P. Tracy 1932-7-13 10497 Humboldt meadow at Corral Prairie Corral Prairie; Klamath Mts., Trinity Summit 1524 Comment
  CAS-BOT-BC128189  Salix lasiandra var. lasiandra Harold E. Parks 1931-5-14 0959 Humboldt Van Duzen River between Alton and Carlotta 15 Comment
  HSC96574  Salix lasiandra var. lasiandra Gordon Leppig 2003-2-20 1807 Humboldt Eureka Slough, Cooper Gulch 5 Comment
  CAS-BOT-BC107599  Salix lasiolepis Joseph P. Tracy 1933-4-2 10960 Humboldt On slope of Berry's Mountain, on Trinity Highway, east of Redwood Creek 762 Comment
  JEPS12945  Salix lasiolepis Joseph P. Tracy 1929-10-20 8681 Humboldt Larrabee Valley Northern Coast Ranges, Larrabee Valley 762 Comment
  JEPS12967  Salix lasiolepis Joseph P. Tracy 1931-9-26 9696 Humboldt at Redwood Creek Berry's; Northern Coast Ranges 274 Comment
  JEPS14751  Salix lasiolepis Joseph P. Tracy 1932-6-4 10126 Humboldt Bridgeville; Northern Coast Ranges 228 Comment
  UC469427  Salix lasiolepis Joseph P. Tracy 1931-9-7 9628 Humboldt at Willow Creek Trinity R. Valley; Northern Coast Ranges, Trinity R. Valley 152 Comment
  UC469438  Salix lasiolepis Joseph P. Tracy 1931-11-8 9747 Humboldt on Van Duzen R. Blue Slide; Northern Coast Ranges, Van Duzen R., Blue Slide 91 Comment
  UC490550  Salix lasiolepis Joseph P. Tracy 1932-4-24 9802 Humboldt between Miranda and Redway (S. Fork Eel R.); North Coast Ranges, S. Fork Eel R. 91 Comment
  UC506396  Salix lasiolepis Joseph P. Tracy 1932-10-8 10865 Humboldt Berry's Mt. Northern Coast Ranges (on Trinity Hwy) 762 Comment
  UC512025  Salix lasiolepis Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-17 1333 Humboldt near bridge on Trinity Highway (foot of bank); Trinity River 152 Comment
  UC54933  Salix lasiolepis P. E. Goddard 1901-8-1 140 Humboldt Hupa Comment
  RSA10910  Salix lasiolepis var. sandbergii Carleton R. Ball, Harold E. Parks, Joseph P. Tracy 1932-5-17 1324 Humboldt Berry's Mountain. E of Redwood Creek. On Trinity Hwy. 762 Comment
  POM220145  Salix lucida subsp. lasiandra H. E. Parks, Joseph P. Tracy 1931-5-17 966 Humboldt Mouth of Willow Creek at Trinity River. 150 Comment
  SBBG57838  Salix lucida subsp. lasiandra H. E. Parks 1931-3-24 911 Humboldt banks of Eel River, Fortuna 10 Comment
  CAS-BOT-BC125616  Salix melanopsis W. R. Dudley 1899-6-21 s.n. Humboldt At the junction of the North and South forks of Eel River Comment
  CAS-BOT-BC125629  Salix melanopsis Carleton R. Ball; Harold E. Parks; Joseph P. Tracy 1932-5-13 01252 Humboldt On floodplain of Mad River at Engelhart gravel pit, 2 miles east of Redwood Highway and above Blue Lake Road Comment
  CAS-BOT-BC125640  Salix melanopsis Harold E. Parks; Joseph P. Tracy 1931-5-17 0972 Humboldt Mouth of Willow Creek at Trinity River 150 Comment
  JEPS12935  Salix melanopsis Joseph P. Tracy 1931-5-3 9348 Humboldt Mad River near Blue Lake; Northern Coast Region 15 Comment
  POM219691  Salix melanopsis H. E. Parks 1931-5-14 960 Humboldt Van Duzen River between Alton and Carlotta. 15 Comment
  SBBG57930  Salix melanopsis H. E. Parks, J. P. Tracy 1931-5-17 972 Humboldt mouth of Willow Crk at Trinity River 150 Comment
  SJSU181  Salix melanopsis H. E. Parks 1931-5-14 965 Humboldt Van Duzen R between Alton & Carlotta 15 Comment
  UC1196567  Salix melanopsis Joseph P. Tracy 1932-5-1 9847 Humboldt along Van Duzen R. Alton; North Coast Ranges, Van Duzen R. 30 Comment
  UC162649  Salix melanopsis Joseph P. Tracy 1911-7-4 3295 Humboldt near its mouth Willow Creek; Northern Coast Ranges, Willow Creek - tributary of Trinity R 182 Comment
  UC481292  Salix melanopsis Harold E. Parks 1931-5-14 964 Humboldt Van Duzen R. between Alton and Carlotta; Van Duzen R. 15 Comment
  SEINET7545185  Salix melanopsis H. E. Parks 1931-1 0962 Humboldt Van Duzen River between Alton and Carlotta 5 Comment
  CAS-BOT-BC129206  Salix piperi Doris K. Kildale 1928-3-27 4360 Humboldt Freshwater Comment
  CAS-BOT-BC129156  Salix scouleriana Doris K. Kildale 1926-11-26 2836 Humboldt Pine's Pasture - Eureka Comment
  CAS-BOT-BC129175  Salix scouleriana W. R. Dudley 1899-6-1 s.n. Humboldt Eureka Peninsula Comment
  HSC20076  Salix scouleriana J. P. Tracy 1932-7-13 10507 Humboldt Klamath Mtns., Trinity summit, Corral Prairie 1524 Comment
  JEPS13086  Salix scouleriana Joseph P. Tracy 1936-2-2 14766 Humboldt vicinity of Carlotta 30 Comment
  SD883  Salix scouleriana Harold E. Parks 1931-5-14 957 Humboldt Little Larabee Bridge, Van Duzen River 449 Comment
  UC481273  Salix scouleriana Harold E. Parks 1931-5-28 1024 Humboldt Little R. Lagoon Comment
  UC490506  Salix scouleriana Joseph P. Tracy 1932-8-11 10338 Humboldt Bridgeville Northern Coast Ranges, Bridgeville 228 Comment
  CAS-BOT-BC128960  Salix sitchensis Joseph P. Tracy 1932-7-18 10724 Humboldt Rocky exposed places, head of Brett Hole - Klamath Mountains 1828 Comment
  HSC20101  Salix sitchensis C. R. Ball, H. E. Parks, J. P. Tracy 1932-5-13 1256 Humboldt Mad River at Engelhart gravel pit, 2 mi. E of Redwood Hwy. and above Blue Lake Rd. Comment
  HSC38186  Salix sitchensis Thomas W. Nelson, James Nelson 1976-3-23 3288 Humboldt Eureka, E side of F St., 3800 block Comment
  HSC96573  Salix sitchensis Gordon Leppig 2003-2-20 1808 Humboldt Eureka Slough, Cooper Gulch 5 Comment
  SBBG57990  Salix sitchensis L. Rowntree 1931-7-25 Humboldt Carlotta Comment
  UC481274  Salix sitchensis Harold E. Parks 1931-5-28 1026 Humboldt Little River Lagoon Comment
  UC490533  Salix sitchensis Joseph P. Tracy 1932-7-16 10646 Humboldt open ground at Corral Prairie; Klamath Mts., Trinity Summit, Corral Prairie 1524 Comment
  UC490534  Salix sitchensis Joseph P. Tracy 1932-7-13 10506 Humboldt wet meadow at Corral Prairie; Klamath Mts., Trinity Summit, Corral Prairie 1524 Comment
  SEINET4855904  Salix tracyi Carleton R. Ball 1932-5-13 01254 Humboldt Mad River at Engelhart gravel pit, 2 mi E of Redwood Hwy and above Blue Lake Road. Comment
  POM118790  Sambucus callicarpa Marcus E. Jones 1924-4-26 s.n. Humboldt Eureka. Comment
  RSA46896  Sambucus racemosa var. arborescens Doris K. Kildale 1927-3-22 2938 Humboldt N Fork of Elk River, Humboldt County Comment
  UC168945  Sambucus racemosa var. racemosa Joseph P. Tracy 1910-6-19 3155 Humboldt near Forks of Eel River; Northern Coast Region, region about Humboldt Bay 0 Comment
  UC902070  Sambucus racemosa var. racemosa Joseph P. Tracy 1949-7-25 18399 Humboldt Trinidad 3 Comment
  POM256866  Sanicula arctopoides Joseph P. Tracy 1936-5-30 14838 Humboldt Near Samoa on Humboldt Bay. 6 Comment
  UC1197113  Sanicula arctopoides Joseph P. Tracy 1904-4-24 4028 Humboldt Ocean Beach at Humboldt Bay Ocean Beach; Northern Coast Region, Humboldt Bay, Ocean Beach Comment
  UC154104  Sanicula arctopoides Joseph P. Tracy 1904-4-24 2021 1/2 Humboldt Ocean Beach at Humboldt Bay Ocean Beach; Northern Coast Region, Humboldt Bay, Ocean Beach Comment
  CAS-BOT-BC223251  Sanicula bipinnatifida Joseph P. Tracy 1938-7-4 15985 Humboldt Vicinity of South Yager Creek 762 Comment
  JEPS284  Sanicula crassicaulis Lincoln Constance 1934-5-24 642 Humboldt Bull Creek Region, South Fork Eel River South Fork Eel River; Bull Creek Region, South Fork Eel River 121 Comment
  HSC102543  Sanicula graveolens M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-29 1529 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1579 Comment
  JEPS1004  Sanicula graveolens Joseph P. Tracy 1929-7-4 8614 A Humboldt French Camp Ridge 1066 Comment
  HSC45395  Sanicula graveolens Thomas W. Nelson, Jane P. Nelson 1977-7-4 3594 Humboldt Beside pond above Alder Springs 1585 Comment
  HSC101053  Sanicula tracyi Lisa Hoover 1996-7-11 176 Humboldt From County Rd. 1 heading south: turn onto Forest Service Rd. 3N10; pass intersection with FS Rd. 2N10 1119 Comment
  HSC34957  Sanicula tuberosa Thomas W. Nelson 1975-5-24 1863 Humboldt McKeown Ranch, N of Dinsmore. Comment
  UC642317  Sanicula tuberosa Joseph P. Tracy 1933-7-11 12688 Humboldt North Coast Ranges, Grouse Mountain Grouse Mountain; North Coast Ranges, Grouse Mountain 1524 Comment
  HSC101026  Sanicula tuberosa Jenny Moore 2007-6-14 29 Humboldt Pilot Creek Watershed, west of South Fork Mountain, Dan East Trail (5E14). 976 Comment
  UC1222738  Sanicula tuberosa Joseph P. Tracy 1950-7-1 18943 Humboldt near Clear Lake (where Friday Ridge Road comes to top of Grouse Mountain Ridge, at summit of Grouse Mountain); Grouse Mountain 1524 Comment
  UC183566  Saxifraga californica Joseph P. Tracy 1913-5-4 4063 Humboldt Kneeland Prairie; Northern Coast Ranges, Kneeland Prairie 762 Comment
  JEPS26211  Saxifraga ferruginea Joseph P. Tracy 1935-7-24 14186 Humboldt near Ranger Station (Trinity Summit); Trinity Summit 1828 Comment
  UC1949159  Saxifraga mertensiana Barbara Ertter with Thomas J. Delendick 1987-5-16 6936 Humboldt 3 mi E of Berry Summit on Hwy 299, ca 20 airmiles E of Arcata; on S side of road above Willow Creek Comment
  UC249630  Saxifraga mertensiana Joseph P. Tracy 1922-4-30 6009 Humboldt mouth of South Fork Trinity River; Northern Coast Ranges, South Fork Trinity River 152 Comment
  CAS-BOT-BC441187  Saxifraga mertensiana Alice Eastwood; John Thomas Howell 1937-6-24 4867 Humboldt 5 miles east of Berry Summit Comment
  RSA0101646  Sceptridium multifidum Robert F. Thorne, Percy Everett 1965-8-7 35230 a Humboldt Big Lagoon. 3 Comment
  HSC44816  Schoenoplectus tabernaemontani B. Marcot 1977-7-12 Humboldt Comment
  UC1541346  Scirpus acutus var. occidentalis Harold E. Parks Aug 1934 5156 a Humboldt Dry Lagoon Comment
  UC668018  Scirpus acutus var. occidentalis Joseph P. Tracy 1934-7-20 13472 Humboldt Big Lagoon 3 Comment
  SEINET5161340  Scoliopus bigelovii Unknown 1998-3-10 s.n. Humboldt southern Humbolt County Comment
  UC249514  Scoliopus bigelovii Joseph P. Tracy 1922-5-14 6049 Humboldt Kneeland Prairie 762 Comment
  UCD139809  Scoliopus bigelovii K. Esau 1934-4-1 s.n. Humboldt Above Fort Seward. Comment
  UCD139810  Scoliopus bigelovii R. N. Raynor 1935-5-22 s.n. Humboldt Ford Seward. Comment
  CAS-BOT-BC517412  Scoliopus bigelovii Leo Shapovalov; C. Woodhull 1940-3-6 s.n. Humboldt Redwood Creek near Garberville in Humboldt Redwood State Park Comment
  SEINET3991325  Scoliopus bigelovii Unknown 1956-3-17 104 Humboldt South boundary of Jensen grove, off US Highway 101 Comment
  UCD18586  Scoliopus bigelovii Roman Gankin 1956-3-17 104 Humboldt off US Hwy 101, south boundary of Jenson Grove, near creek. Comment
  BLMAR679  Scrophularia californica Jennifer Wheeler 2013-7-17 679 Humboldt King range, Mattole Beach parking lot 6 Comment
  HSC79343  Sedum laxum subsp. heckneri D. K. Imper 1983-7-28 Humboldt Six Rivers National Forest, Orleans, off FS 12N20 near Bald Mtn. Comment
  HSC59359  Sedum obtusatum subsp. retusum M. A. Baker 1979-6-28 945 Humboldt 1500 Comment
  HSC73871  Sedum radiatum Gail Newton 1980-7-14 1461 Humboldt Near Last Chance Ridge. 1219 Comment
  JEPS25690  Sedum spathulifolium P. C. Hutchison 1961-5-22 2020 Humboldt 5.4 mi ne of Klamath River bridge at Weitchpec (10 mi sw of Orleans, Hiway US299, w side of Klamath River on steep rocks above road); w side Klamath River, ne Weitchpec, sw Orleans Comment
  UC1713630  Selaginella oregana Don Branscomb 1957-12-26 Humboldt Lookout rock Patrick's Point Comment
  POM182453  Selaginella wallacei Joseph P. Tracy 1912-7-26 3850 Humboldt Kneeland Prairie. 762 Comment
  UC1239800  Selaginella wallacei Joseph P. Tracy 1913-5-4 4062 Humboldt Kneeland Prairie; Northern Coast Ranges 762 Comment
  HSC6116  Senecio integerrimus D. E. Anderson 1962-5-1 2195 Humboldt 2 mi. W of Hoopa Comment
  HSC34961  Senecio integerrimus var. major Thomas W. Nelson 1975-5-24 1873 Humboldt McKeown Ranch, N of Dinsmore. Comment
  UC176813  Senecio integerrimus var. major Joseph P. Tracy 1913-6-17 4160 Humboldt near the summit Buck Mountain; Northern Coast Ranges 1524 Comment
  SBBG8070  Senecio minimus H. and M. Dearing 1939-6-23 3697 Humboldt 12 mi E of Arcata Comment
  UCD135618  Senecio minimus S. W. Cosby 1921-9-27 s.n. Humboldt south of Ferndale. Comment
  UCD135620  Senecio minimus Gilfillan 1921-8-16 s.n. Humboldt Eureka. Comment
  UC1223152  Senecio sylvaticus Joseph P. Tracy 1948-8-8 18087 Humboldt Iaqua School House Comment
  CAS-BOT-BC364329  Senecio triangularis Henry M. Pollard 1944-9-8 s.n. Humboldt Orleans Mt. 1524 Comment
  HSC57035  Senecio triangularis Overton, Butler 1979-7-24 9667 Humboldt Near Friday Camp, close to the town of Willow Creek. 1250 Comment
  HSC58178  Senecio triangularis G. L. Clifton, Griswold 1979-8-2 12262 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  HSC74413  Senecio triangularis Gail Newton 1980-8-10 2031 Humboldt Near Blake Mtn. 1707 Comment
  UC581710  Senecio triangularis Joseph P. Tracy 1932-7-13 10523 Humboldt Corral Prairie , Corral Prairie (Trinity Summit) 1584 Comment
  UCD20172  Senecio triangularis J. M. Tucker 1948-9-3 1857 Humboldt Near junction of Friday Ridge road and Horse Mountain-Grouse Mountain Road. Comment
  HSC34816  Senecio vulgaris Dryden 1975-4-20 123 Humboldt Arcata 0 Comment
  NY64456  Sequoia sempervirens W. L. C. Muenscher 1939-4-15 15056 Humboldt Blair Grove, near Dyersville Comment
  RSA383928  Sequoia sempervirens M. B. Dunkle 1936-8-22 4858 Humboldt Williams Grove, Eel River. 213 Comment
  UC1196921  Sequoia sempervirens J. P. Tracy 1897-2-22 153 Humboldt immediate vicinity Eureka 0 Comment
  SEINET5334848  Sequoia sempervirens P. A. Lehenbauer 1857 Humboldt near Eureka Comment
  HSC98920  Sericocarpus oregonensis var. oregonensis Cara Witte 2008-8-16 1032 Humboldt Intersection of National Forest 1 and Forest Service Road 4N06. 1252 Comment
  UCR39801  Sherardia arvensis L. P. Janeway 1984-5-13 775 Humboldt Along the Kneeland/Bridgeville Road c. 15 mi. east of the Kneeland post office just past Lone Star Junction and near Lone Star Creek 610 Comment
  UC673264  Sidalcea asprella Lincoln Constance, Reed C. Rollins 1942-5-12 2889 Humboldt Klamath River 12 mi n Weitchpec 121 Comment
  HSC100702  Sidalcea malachroides Carl C. Marshall Jun 1886 29 Humboldt Mad River region. Comment
  UC146164  Sidalcea malviflora subsp. asprella Joseph P. Tracy 1908-6 2813 Humboldt opposite Buck Mountain (Valley of Van Duzen River); Northern Coast Ranges, Valley of Van Duzen River 457 Comment
  BLMAR281  Sidalcea malviflora subsp. patula Jennifer Anthony-Wheeler 1999-5-28 281 Humboldt King range, growing along windy pt rd about 1/2 way to the spring exclosure 140 Comment
  UC146163  Sidalcea malviflora subsp. patula J. P. Tracy 1905-6-11 2194 Humboldt immediate vicinity Eureka (at Buckport); immediate vicinity of Eureka, at Bucksport 0 Comment
  UC1197970  Sidalcea oregana subsp. spicata Joseph P. Tracy 1935-7-27 14275 Humboldt Corral Prairie Trinity Summit, Corral Prairie 1584 Comment
  UC668132  Sidalcea oregana subsp. spicata Joseph P. Tracy 1937-8-12 15653 Humboldt Snow Camp 1402 Comment
  HSC103725  Silene bolanderi M. R. Mesler, C. Wilson 2010-6-18 825 Humboldt Along Hwy 36 near pmm 32.53 771 Comment
  UC668100  Silene californica Joseph P. Tracy 1935-6-23 13997 Humboldt French Camp Ridge 1066 Comment
  UCR123953  Silene californica George K. Helmkamp, E. A. Helmkamp 2001-7-8 6965 Humboldt North coast hills., Calif. Hwy 36, 2.2 mi west of Dinsmore 732 Comment
  UC1541414  Silene californica H. E. and S. T. Parks June 1928 258 Humboldt Longvale 182 Comment
  UC1198350  Silene campanulata Joseph P. Tracy 1933-7-11 12675 Humboldt Horse Mountain 1432 Comment
  JEPS23252  Silene campanulata subsp. campanulata Joseph P. Tracy 1937-7-29 15590 Humboldt w slope near top at Hyampom Trail , Hyampom Trail (South Fork Mountain) 1676 Comment
  RSA21442  Silene campanulata subsp. glandulosa C. B. Wolf 1937-8-12 9206 Humboldt North Coast Range, South Fork Mountain, 0.6 miles S of Blake Lookout. 1677 Comment
  UC668091  Silene gallica Joseph P. Tracy 1931-5-3 9351 Humboldt near Blue Lake; along Mad River, near Blue Lake 15 Comment
  HSC57664  Silene grayi G. L. Clifton, Griswold 1979-7-25 10841 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1814 Comment
  JEPS51215  Silene grayi Joseph P. Tracy 1932-7-12 10477 Humboldt head of Brett Hole , head of Brett Hole (Trinity Summit) 1828 Comment
  UC668082  Silene grayi Joseph P. Tracy 1932-7-12 10477 Humboldt Head of Brett Hole Trinity Summit 1828 Comment
  UC1541453  Silene hookeri H. E. Parks and J. P. Tracy 1930-5-25 791 Humboldt Laribee Valley 792 Comment
  CAS-BOT-BC181223  Silene hookeri subsp. bolanderi Volney Rattan 1883-1-1 s.n. Humboldt Mad River Comment
  CAS-BOT-BC181224  Silene hookeri subsp. bolanderi Doris Kildale 1931-5-24 10845 Humboldt Little Laribee, Laribee Valley Comment
  CAS-BOT-BC181262  Silene hookeri subsp. hookeri Doris K. Kildale 1929-3-26 9137 Humboldt Orleans, Klamath River 152 Comment
  CAS-BOT-BC389054  Silene laciniata subsp. californica Doris K. Kildale 1928-6-24 7060 Humboldt Redwood Creek at Berry's 289 Comment
  CAS-BOT-BC389053  Silene laciniata subsp. californica Doris K. Kildale 1926-3-22 1686 Humboldt Fleener Creek Comment
  CAS-BOT-BC389070  Silene laciniata subsp. californica Thomas W. Nelson; Jane P. Nelson 1980-7-13 6059 Humboldt North Coast Ranges. Along the road from Dinsmore to Anderson Ford-McKeown Ranch road 762 Comment
  HSC4174  Silene laciniata subsp. californica R. Spellenberg 1964-6-16 434 Humboldt 0.25 mi. W of Hwy. 299 bridge over S Fork of Trinity River Comment
  HSC67883  Silybum marianum J. P. Smith 1973-5-26 6872 Humboldt Scotia Bluffs along the Eel River near Rio Dell Comment
  CAS-BOT-BC75284  Sisymbrium officinale Kenneth Clark 1980-5-10 639 Humboldt Shelter Cove. Dead Man's Gulch. 15 Comment
  HSC49362  Sisyrinchium bellum R. York 1979-4-13 219 Humboldt Just N of College Cove, 1 mi. N of Trinidad Comment
  HSC27000  Sisyrinchium californicum Brad Klipfel 1973-8-17 271 Humboldt Big Lagoon Park, N of Trinidad Comment
  HSC89586  Solanum aviculare M. Roantree 1985-5-24 57 Humboldt W side of Trinidad Head, along trail Comment
  HSC61867  Solanum aviculare John Sanders 1980-9-22 Humboldt Crannell, L side of trail N of Christie Ranch 61 Comment
  UC577352  Solanum umbelliferum Joseph P. Tracy 1937-5-30 15316 Humboldt Bridgeville 198 Comment
  BLMAR139  Solanum xanti Donald Hazlett 1994-6-7 139 Humboldt King range, near horse Mt. Ridge rd 670 Comment
  HSC58149  Solidago elongata G. L. Clifton, Griswold 1979-8-2 12196 Humboldt Near Oregon Creek, close to the town of Hoopa 1663 Comment
  HSC100448  Solidago elongata Carl C. Marshall Sep 1887 441 Humboldt Near tunnel, Table Bluff. Comment
  CHSC13899  Solidago spathulata D. Joley 1967-8-17 65 Humboldt Found growing 10 mi NW of Fortuna. Comment
  HSC59683  Solidago spathulata George Kirn 1977-10-30 Humboldt 1/2 mi. from mouth of Elk River 8 Comment
  HSC90397  Solidago spathulata Jean Hanson 1980-4-12 47 Humboldt Indian (Gunther) Island. W end of island between the point of meeting of the two dikes and the shore. Comment
  UC129319  Solidago spathulata Harley P. Chandler May 1901 1158 Humboldt Humboldt Bay North Coast Ranges, Humboldt Bay 3 Comment
  UCR122358  Solidago spathulata var. spathulata George K. Helmkamp, E. A. Helmkamp 2001-7-8 7023 Humboldt North Coast, Samoa Peninsula, 2.6 miles south of CA Hwy 255 bridge across Humboldt Bay 15 Comment
  CHSC10128  Sonchus asper J. W. Johnson 1961-6-12 1410 Humboldt Samoa Peninsula. On a dune tongue between the foredunes, at Foredune 39. Comment
  CAS-BOT-BC374425  Sonchus asper F. A. MacF. 1934-6-22 13743 Humboldt Arcata, North coast of California Comment
  CAS-BOT-BC374427  Sonchus asper Joseph P. Tracy 1932-6-4 10132 Humboldt Bridgeville 198 Comment
  HSC6217  Sonchus asper J. W. Johnson 1962-6-12 1410 Humboldt Arcata; between the foredunes, at foredune 39, Samoa Comment
  HSC26377  Sonchus oleraceus T. O. Osborne 1970-9-16 38 Humboldt Trinidad Bay, Prisoner Rock Comment
  UCD136155  Sonchus oleraceus Linda M. Barker 1976-7-5 1644 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  HSC60123  Sonchus oleraceus M. A. Baker 1978-5-20 559 Humboldt Hoopa Indian Reservation Comment
  UC1103519  Sparganium emersum var. emersum Joseph P. Tracy 1934-10-21 13692 Humboldt in front of s end Stone Lagoon (Dry Lagoon); Dry Lagoon 3 Comment
  HSC89257  Spartina alterniflora Karen Kovacs 1989-10-26 Humboldt .5 mi. N of Samoa-Eureka bridge, E of Hwy. 255, Humboldt Bay 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
  HSC4236  Spergula arvensis S. J. Hawks 1965-4-6 22 Humboldt Clam Beach Comment
  SJSU8458  Spergularia canadensis var. occidentalis H. T. Harvey 1977-7-6 614 Humboldt South Spit, Humboldt Bay Comment
  CAS-BOT-BC390614  Spergularia rubra Henry M. Pollard 1944-9-1 s.n. Humboldt Near Orleans Comment
  RSA472777  Spiraea douglasii T. Gertrude Williamson 1924-7-12 s.n. Humboldt Arcata. Comment
  UC14209  Spiraea douglasii Chesnut and Drew 1888-8-10 Humboldt Arcata Comment
  UC1196398  Spiranthes romanzoffiana Mrs. Alma Bonstell 1912-8-5 Humboldt Christmas Prairie Northern Coast Ranges 914 Comment
  HSC14427  Stachys ajugoides H. E. Parks, S. T. Parks Aug 1943 24252 Humboldt Spruce Cove, Trinidad. 61 Comment
  SEINET5196066  Stachys ajugoides Unknown 2002-8-22 87 Humboldt Along Fischer Road 0.25mi N of the Mad River. Comment
  UC577322  Stachys ajugoides var. rigida Joseph P. Tracy 1933-6-24 12611 Humboldt Big Lagoon 3 Comment
  UC1239725  Stachys ajugoides var. rigida Joseph P. Tracy 1943-7-11 17434 Humboldt Park's garden Trinidad 3 Comment
  UCLA71115  Stachys ajugoides var. rigida H. Lewis 1940-7-3 Humboldt Little River Beach State Park Comment
  UCLA71395  Stachys ajugoides var. rigida M. S. Jussel 1931-5-2 Humboldt Sylvandale Comment
  HSC12790  Stachys arvensis M. J. Athey 1970-11-15 22 Humboldt Front yard of house in Westhaven, Trinidad Comment
  POM283393  Stachys bullata Lyman Benson 1929-7-19 s.n. Humboldt Mouth of Matole [Mattole] River. Comment
  UC673112  Stachys chamissonis Joseph P. Tracy 1940-9-26 16726 Humboldt Eureka 3 Comment
  HSC38526  Stachys rigida D. E. Anderson, J. P. Smith 1971-6-18 - 1070 Humboldt Chezem Rd., about 3 mi. E of bridge over Redwood Creek Comment
  UC161039  Stellaria littoralis J. P. Tracy 1909-5-16 2968 Humboldt near Trinidad 30 Comment
  UC1198283  Stellaria media Joseph P. Tracy 1923-4-15 6185 Humboldt Redwood Creek Northern Coast Ranges (at Berry's) 274 Comment
  HSC90683  Stellaria media Gail Newton 1982-5-1 2500 Humboldt Eureka, Elk River Wildlife Area Comment
  UC1197796  Stenanthium occidentale Joseph P. Tracy 1947-8-24 17901 Humboldt Box Camp; Trinity Summit 1463 Comment
  UC205170  Stephanomeria virgata subsp. pleurocarpa Joseph P. Tracy 1919-9-14 5187 Humboldt near Mouth of Willow Creek; Northern Coast Ranges, Valley of the Trinity River 152 Comment
  HSC40560  Stipa occidentalis var. californica Thomas W. Nelson, Jane P. Nelson 1976-7-1 2927 Humboldt Along ridge W of Lassic Peak (Signal Peak). 1738 Comment
  HSC65856  Streptanthus tortuosus Gail Newton 1980-6-28 687 Humboldt Near Mad River Butte. 1536 Comment
  UC492252  Streptanthus tortuosus var. orbiculatus Joseph P. Tracy 1932-7-12 10457 Humboldt head of Brett Hole Klamath Mountains, Trinity Summit 1828 Comment
  HSC82543  Streptanthus tortuosus var. tortuosus Thomas W. Nelson 1979-7-11 5002 Humboldt N Trinity Mtn. and ridge to E. 1829 Comment
  CAS-BOT-BC519056  Streptopus amplexifolius Greg de Nevers 2001-4-19 12257 Humboldt Fern Canyon, Prairie Creek, Redwoods State Park 91 Comment
  UC1103500  Streptopus amplexifolius var. americanus Joseph P. Tracy 1930-7-17 8998 Humboldt McKay Camp; South Fork Mountain 1676 Comment
  HSC17768  Stuckenia pectinata J. P. Tracy 1934-7-20 13462 Humboldt Big Lagoon 3 Comment
  RSA1901  Symphoricarpos albus var. laevigatus C. B. Wolf 1930-10-29 1038 Humboldt Old Coast Road at Honeydew Post Office. 152 Comment
  BLMAR248  Symphoricarpos mollis Jennifer Anthony-Wheeler 1997-7-24 248 Humboldt Lacks Creek, growing beneath conifer canopy 1219 Comment
  HSC58812  Symphyotrichum bracteolatum G. L. Clifton, Griswold 1979-8-1 12007 Humboldt Near N Trinity Mtn., close to the town of Hoopa. 1798 Comment
  CHSC10151  Symphyotrichum chilense J. W. Johnson 1961-8-23 1048 Humboldt Arcata. Along the sides of the Lanphere County Road by Mad River Slough. Comment
  CAS-BOT-BC99164  Symphyotrichum chilense Carl B. Wolf 1928-8-27 1183 Humboldt Salt Marsh Eureka Bay, on the road to Arcata Comment
  HSC75277  Symphyotrichum hendersonii J. O. Sawyer, D. A. Thornburgh 1980-9-9 4078 Humboldt Mill Creek Lake and surrounding meadows Comment
  UC1199308  Symphyotrichum hendersonii Joseph P. Tracy 1935-7-27 14277 Humboldt Corral Prairie Trinity Summit 1584 Comment
  UC672289  Symphyotrichum subspicatum Frank W. Peirson 1923-7-11 3882 Humboldt 7 mi n Arcata Comment
  SEINET3194865 Image available Taeniatherum caput-medusae Joseph P. Tracy 1950-1 18772 Humboldt Ranges between Garberville and Harris. 610 Comment
  HSC6245  Tanacetum bipinnatum Francis Winter 1960-5-6 Humboldt Mouth of Mad River, N of Arcata Comment
  CAS-BOT-BC376731  Tanacetum bipinnatum Peter H. Raven 1962-8-26 18075 Humboldt Dunes just south of Samoa Comment
  UCSB25217  Tanacetum douglasii J. R. Haller 1967-6-17 2181 Humboldt collected 10.0 mi N, at Clam Beach County Park, along U S Highway 101 Arcata - Clam Beach County Park, U S Highway 101, and Arcata Comment
  SD42343  Tanacetum vulgare Carl B. Wolf 1937-9-12 9330 Humboldt Big Lagoon, south side along Redwood Highway 6 Comment
  HSC6263  Taraxacum officinale William J. Ferlatte 1963-4-28 28 Humboldt Near 12th and B St., Arcata Comment
  UC314623  Taraxia ovata Joseph P. Tracy 1924-3-16 6627 Humboldt Garberville Northern Coast Ranges 121 Comment
  HSC21572  Tauschia kelloggii Francis Winter 1960-4-24 Humboldt Hog Ranch Ridge, 8 mi. NW of Hoopa Indian Reservation 610 Comment
  CAS-BOT-BC85211  Taxus brevifolia Henry M. Pollard 1986-8-28 s.n. Humboldt Near summit of Orleans Mt. 1828 Comment
  UC54777  Taxus brevifolia Joseph Burtt Davy and Walter C. Blasdale Jun 21 1899-Jun 23 1899 5819 Humboldt Tinity Summit North Coast Ranges, Trinity Summit Comment
  UC1222362  Tellima grandiflora Joseph P. Tracy 1950-6-8 18722 Humboldt 7 mi s Ferndale (near Mountain Glen Ranch, Bear River Ridge, summit of ridge); Bear River Ridge 609 Comment
  OBI35885  Thuja plicata David J. Keil 1983-7-1 17294 Humboldt Between Ferndale and Bear River Ridge Rd along Mattole Rd Comment
  UC54780  Thuja plicata Joseph Burtt Davy and Walter C. Blasdale 1899-7-30 6193 Humboldt hills back of Arcata Comment
  RSA0039379  Thysanocarpus curvipes var. curvipes John H. Thomas 1968-4-21 14363 Humboldt Near mouth of Bluff Creek about 6 miles NE of Weitchpec near Bluff Creek campground. 140 Comment
  UCR3513  Tiarella trifoliata var. unifoliata David Whistler, H. M. Whistler 1964-7-29 640729- 5 Humboldt 0.2 mi north of Meyers Flats on U.S. 101 75 Comment
  CAS-BOT-BC436910  Tiarella trifoliata var. unifoliata W. R. Dudley 1899-6-20 s.n. Humboldt Near Eel River Comment
  POM228370  Tiarella trifoliata var. unifoliata C. C. Harris, S. K. Harris 1936-6-16 660 Humboldt On Yager Road from Carlotta. 152 Comment
  UC11936  Tiarella trifoliata var. unifoliata J. Burtt Davy 1899-6-19 5650 Humboldt Hoopa Mt. North Coast Ranges, summit Hoopa Mt. (at the summit) Comment
  UC1198898  Tiarella trifoliata var. unifoliata Joseph P. Tracy 9062 Humboldt near McKay Camp South Fork Mountain; Northern Coast Ranges, South Fork Mountain 1676 Comment
  HSC44676  Tolmiea diplomenziesii Brad Klipfel 1973-7-15 214 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  UC1222357  Tolmiea diplomenziesii Joseph P. Tracy 1950-6-8 18726 Humboldt Bear River Ridge 609 Comment
  HSC45070  Torilis arvensis R. Sutherland 1978-5-16 2 .16578 Humboldt Redwood Creek 143 Comment
  HSC3137  Toxicodendron diversilobum Francis Winter 1960-4-24 Humboldt 1 mi. N of Redwood Creek Ranch. 396 Comment
  CAS-BOT-BC323056  Tracyina rostrata Joseph P. Tracy 1930-6-15 8762 Humboldt Dobbyn Creek 152 Comment
  HSC6288  Tracyina rostrata J. P. Tracy 1930-6-15 8762 Humboldt Dobbyn Creek. 152 Comment
  UC1199329  Tracyina rostrata Joseph P. Tracy 1916-6-20 4736 Humboldt Parry's Ranch Northern Coast Ranges, Dobbyn Creek 182 Comment
  HSC62982  Tragopogon porrifolius M. Dean Griswold Jr. 1979-5-29 80 Humboldt NW of Plant Operations, Humboldt State University campus Comment
  HSC75391  Trautvetteria caroliniensis J. O. Sawyer, M. A. Ericksen 1980-7-18 3639 Humboldt Along FS Rd. 10N02, S of Middle Fork of Mill Creek Comment
  HSC17943  Trientalis latifolia Yarick 1960-8-3 Humboldt K&K. Kruger Cr. Comment
  HSC17932  Trientalis latifolia Francis Winter 1960-4-24 Humboldt 7 mi. W of Hoopa Indian Reservation, Bair Rd. 915 Comment
  HSC44771  Trientalis latifolia Thomas W. Nelson, Jane P. Nelson 1977-7-1 3550 Humboldt Along north side of ridge between Bear and Blanket Creeks, unsurveyed section east of Sec. 25 1494 Comment
  BLMAR717  Trifolium albopurpureum Jennifer Wheeler 2011-5-20 717 Humboldt King range, near strawberry rock 7 Comment
  UC1197230  Trifolium albopurpureum var. dichotomum Joseph P. Tracy 1906-6-10 2488 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  UC1197240  Trifolium albopurpureum var. dichotomum Joseph P. Tracy 1915-6-27 4659 Humboldt near Carlotta (Yager Creek); Northern Coast Ranges 60 Comment
  CDA4307  Trifolium angustifolium J. R. Keck Jr., W. Simas 1973-5-3 Humboldt Bear River Road, between Cook & Morrison. 0 Comment
  HSC99711  Trifolium angustifolium Glenn W. K. Shelton 2010-7-7 10 Humboldt 2.3 mi. S of Kneeland Rd./Mtn. View Rd. intersection, 1 mi. W of Kneeland Airport, along Kneeland Rd., turnout access to powerline corridor 524 Comment
  HSC45121  Trifolium bifidum R. Sutherland 1978-5-19 17 .19578 Humboldt 183 Comment
  UC495643  Trifolium bifidum var. decipiens Joseph P. Tracy 1927-6-18 8186 Humboldt betw Petrolia and the ocean (hills); Northern Coast Ranges 152 Comment
  HSC77333  Trifolium dubium L. P. Janeway 1983-4-30 239 Humboldt 21 Comment
  UCD107930  Trifolium eriocephalum subsp. eriocephalum W. A. Williams 1956-6-1 s.n. Humboldt Kneeland Soil Series, Kneeland. 822 Comment
  UC495649  Trifolium eriocephalum var. eriocephalum Joseph P. Tracy 1930-6-29 8821 Humboldt nw slope Buck Mtn (lower foothills); Northern Coast Ranges Comment
  RSA168894  Trifolium gracilentum Joseph P. Tracy 1933-5-20 12233 Humboldt 4 miles south of Cape Mendocino. Comment
  RSA168859  Trifolium hybridum Joseph P. Tracy 1938-6-15 15926 Humboldt Salmon Creek Flats, south end Humboldt Bay. Comment
  HSC77334  Trifolium incarnatum C. J. Thomas 1983-5-9 28 Humboldt Adjacent to Hwy. overpass walkway near HSU 23 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
  UC495656  Trifolium longipes subsp. hansenii Joseph P. Tracy 1930-6-8 8726 Humboldt Northern Coast Ranges. Kneeland Prairie. 762 Comment
  HSC98880  Trifolium longipes subsp. hansenii Cara Witte 2007-6-1 166 Humboldt Horse Mountain Botanical Area. Along Forest Service 6N38. 1355 Comment
  HSC71451  Trifolium microcephalum J. P. Smith 1973-5-26 6870 Humboldt Scotia Bluffs along the Eel River near Rio Dell Comment
  UC1223356  Trifolium microcephalum Joseph P. Tracy 1939-4-29 16259 1/2 Humboldt Orleans 121 Comment
  UC1197540  Trifolium microcephalum Joseph P. Tracy 1911-7-10 3495 Humboldt near mouth of Willow Creek; Northern Coast Ranges, Valley of Trinity River 152 Comment
  SEINET4178477 Image available Trifolium oreganum Unknown 1927-6-12 8122 Humboldt Horse Mountain 1524 Comment
  HSC45167  Trifolium repens R. Sutherland 1978-5-16 8 .16578 Humboldt 157 Comment
  UC303198  Trifolium variegatum var. rostratum Joseph P. Tracy 1925-6-27 7145 Humboldt Alton Northern Coast Ranges 30 Comment
  UC1197517  Trifolium willdenovii Joseph P. Tracy 1932-6-4 10131 Humboldt Bridgeville Northern Coast Ranges 228 Comment
  HSC27894  Trifolium wormskioldii Clifton Raymond Chesbrough 1973-6-19 64 Humboldt 0.25 mi. from Harris and T St. on U St. Comment
  UC303195  Trifolium wormskioldii Joseph P. Tracy 1923-6-17 6274 Humboldt Big Lagoon Northern Coast Region 6 Comment
  POM349599  Trifolium wormskioldii J. P. Smith, Thomas W. Nelson 1977-6-30 9207 Humboldt Samoa Peninsula just east of the drag strip. Comment
  UC1223518  Trifolium wormskioldii Joseph P. Tracy 1938-7-11 16047 Humboldt Samoa Sand Dunes Comment
  UC495675  Trifolium wormskioldii Joseph P. Tracy 1927-7-17 8281 Humboldt Three Cabins Northern Coast Ranges, Chaparral Mtn 457 Comment
  UC631039  Trifolium wormskioldii P. B. Kennedy 1925-8-29 Humboldt near Eureka Comment
  CAS-BOT-BC451809  Triglochin maritima Carl B. Wolf 1927-8-22 784 Humboldt Big Lagoon Comment
  CHSC69507  Triglochin maritima Vernon Oswald; Lowell Ahart 1997-9-4 8849 Humboldt North Coast Region. Big Lagoon County Park at the southwest edge of Big Lagoon. Bordering a drainage entering the lagoon at the boat ramp. 3 Comment
  HSC14177  Triglochin maritima J. Mustain 1963-4-20 9 Humboldt Big Lagoon Park Comment
  HSC37956  Triglochin maritima Peter Sorensen 1976-6-2 Humboldt Humboldt Bay, Woodley Island Comment
  JEPS101255  Triglochin maritima Dean W. Taylor 1991-9-15 12291 Humboldt Big Lagoon, along Highway 101 near the mouth of Tom Creek. 3 Comment
  RSA32656  Triglochin maritima Doris K. Kildale 1927-7-10 3740 Humboldt Big Lagoon Comment
  CAS-BOT-BC519077  Trillium angustipetalum Doris K. Kildale; L. B. Kildale 1930-5-11 9531 Humboldt Wiregrass Prairie, The Bald Hills 792 Comment
  CHSC2321  Trillium ovatum V. Holt 1933-4-11 Humboldt Comment
  CHSC28032  Trillium ovatum L. Greenhill 1977-4-6 12 Humboldt Abundant population 10 ft. from n side of highway 36, 1mile w from Grizzly Creek State Campground. 91 Comment
  HSC24377  Trillium ovatum J. O. Sawyer 1970-6-24 2278 Humboldt W of Mill Creek Lakes. 1677 Comment
  HSC20852  Triphysaria eriantha subsp. eriantha S. J. Hawks 1965-5-14 56 Humboldt 1 mi. W of Mckinleyville, past the end of Murray Rd. Comment
  JEPS10700  Triphysaria eriantha subsp. eriantha Joseph P. Tracy 1932-5-1 9888 Humboldt vicinity Garberville 121 Comment
  JEPS26159  Triphysaria eriantha subsp. eriantha Joseph P. Tracy 1904-4-24 2019 Humboldt sand dunes of Ocean Beach at Humboldt Bay Humboldt Bay; Northern Coast Region, Humboldt Bay Comment
  UC146241  Triphysaria eriantha subsp. eriantha Joseph P. Tracy 1906-6-10 2477 Humboldt Kneeland Prairie; Northern Coast Ranges, Kneeland Prairie 762 Comment
  UC1198036  Triphysaria eriantha subsp. eriantha Joseph P. Tracy 1911-5-30 3207 Humboldt sandy fields at Bucksport (at Eureka); Northern Coast Region 0 Comment
  SEINET4097498  Triphysaria versicolor O. M. Clark 1932-1 5332 Humboldt North Eureka. Comment
  CAS-BOT-BC199621  Trisetum canescens L. R. Abrams 1918-6-16 7142 Humboldt Willow Creek Comment
  RSA183534  Trisetum canescens H. S. Logsdon 1964-5-10 11 Humboldt 4 miles NE of Orick at Boye's Prairie Comment
  CDA2569  Trisetum flavescens J. P. Tracy 1917-7-1 4830 Humboldt Eureka. 0 Comment
  UC1103147  Trisetum flavescens Joseph P. Tracy 1917-7-1 4830 Humboldt Eureka; Northern Coast Ranges 0 Comment
  UC1225867  Triteleia hyacinthina Joseph P. Tracy 1942-6-15 17124 Humboldt near Redcrest resort (Englewood); Englewood 91 Comment
  JEPS58049  Triteleia laxa Lincoln Constance 1934-5-29 710 Humboldt Upper Look Prairie South Fork Eel River, Bull Creek Region 365 Comment
  UC666899  Triteleia laxa Joseph P. Tracy 1930-7-6 8841 Humboldt Kneeland Prairie 762 Comment
  UC52241  Triteleia peduncularis J. P. Tracy 1903-6-12 1920 Humboldt Eureka vicinity 0 Comment
  OBI17879  Tsuga heterophylla Wallace Weber, John C. Cooke, D. J. Pinkava, & David J. Keil 1969-8-19 2213 Humboldt 24.9 mi W of Humboldt County line on Rte 299 Comment
  UC484080  Tsuga heterophylla Carl B. Wolf 1930-10-25 1763 Humboldt 12 mi above Blue Lake (along Blue Lake to Willow Creek Road (Lord Ellis Road)) 304 Comment
  SEINET11737871  Tsuga heterophylla K. S. Erdman 1970-1 4798 Humboldt Cal-Barrow Rd, 3 mi E of US 101 at boundary of Prairie Creek State Park (Redwood National Park) Comment
  CAS-BOT-BC213076  Ulex europaeus Mrs. Rachel Ellery 1916-4-1 s.n. Humboldt Beatrice Comment
  HSC49911  Umbellularia californica Maralyn O'Meara 1973-2-9 123 Humboldt McKinleyville, N side of Mad River along N Bank Rd., 0.5 mi. E of Hwy. 101 Comment
  RSA46913  Umbellularia californica Doris K. Kildale 1926-1-24 1488 Humboldt Kneeland, near schoolhouse. 762 Comment
  RSA46914  Umbellularia californica Doris K. Kildale 1925-12-27 1447 Humboldt Kneeland. 762 Comment
  HSC100513  Umbellularia californica Carl C. Marshall Apr 1887 358 Humboldt Moist ground back from coast. Comment
  RSA167411  Urtica dioica subsp. holosericea Joseph P. Tracy 1950-9-22 19369 Humboldt Klamath River, near Slate Creek. Below Orleans 8 miles. 122 Comment
  SEINET202011  Urtica urens Joseph P. Tracy 1944-6-10 17476 Humboldt Eureka. 30 Comment
  UC22192  Vaccinium cespitosum J. P. Tracy 1899-3 Humboldt Eureka Comment
  CAS-BOT-BC199315  Vaccinium ovatum A. A. Heller 1937-6-12 15917 Humboldt Bishop Pine Lodge, 3 miles north of Trinidad Comment
  CHSC19510  Vaccinium ovatum P. F. Yull 1966-3-24 112 Humboldt South of Manila School. 120 yards from ocean. Comment
  HSC89437  Vaccinium ovatum P. A. Daly 1984-5-13 26 Humboldt Along trail/Rd. at Trinidad Head. 61 Comment
  JEPS58741  Vaccinium ovatum Mr. and Mrs. George Parrish 1930-5-21 Humboldt Trinidad Comment
  RSA22543  Vaccinium ovatum H. E. Parks, S. T. Parks, C. R. Parks 1937-04 5638 Humboldt Spruce Cove, Trinidad. Comment
  UCSB27859  Vaccinium ovatum Phelps, M. 1972-3-19 Humboldt South end of Elk Ridge, approx. 2.5 mi. north of Briceland 457 Comment
  HSC7923  Vaccinium parvifolium Francis Winter 1960-4-24 Humboldt 1 mi. E of Pine Ridge Summit 854 Comment
  UC673215  Valeriana sitchensis subsp. scouleri Lincoln Constance, Reed C. Rollins 1942-5-11 2867 Humboldt 3 mi w of East Fork of Willow Creek; North Coast Ranges Comment
  HSC37713  Vancouveria hexandra J. D. Ackerman, A. M. Montalvo 1974-7-17 373 Humboldt Van Duzen Co. Park, off Hwy. 36, 6 mi. E of Carlotta 61 Comment
  HSC37714  Vancouveria hexandra J. D. Ackerman, A. M. Montalvo 1974-7-17 375 Humboldt Redwood Grove, E of Van Duzen Co. Park, off Hwy. 36, E of Carlotta 61 Comment
  HSC99004  Vancouveria hexandra Cara Witte 2008-8-16 1026 Humboldt Ammon Ridge Road. Approximately 1/4 mile east of intersection with National Forest 1. 1548 Comment
  RSA0007780  Vancouveria hexandra Larry E. DeBuhr, Gary Wallace 1972-5-22 611 Humboldt Prairie Creek, Redwoods State Park, along Davidson Rd. Comment
  CAS-BOT-BC76088  Vancouveria planipetala Greg de Nevers 2001-4-17 12245 Humboldt Humboldt Redwoods State Park. 91 Comment
  HSC38742  Vancouveria planipetala J. D. Ackerman 1975-6-18 468 Humboldt Big Hill Rd., 7.9 mi. E of Hoopa and Hwy. 96 Comment
  UC146078  Vancouveria planipetala Joseph P. Tracy 1908-6-23 2678 Humboldt near Grizzly Gulch; Northern Coast Ranges, near Grizzly Gulch 152 Comment
  HSC44518  Veratrum californicum var. californicum Brad Klipfel 1973-7-1 126 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC65843  Veratrum insolitum Gail Newton 1980-6-16 184 Humboldt Near Onion Mtn. 1280 Comment
  HSC65844  Veratrum insolitum Gail Newton 1980-6-16 154 Humboldt Near Monks Camp. 1097 Comment
  UC1173645  Veratrum insolitum Joseph P. Tracy 1929-7-4 8636 Humboldt French Camp Ridge 1066 Comment
  UC1225852  Veratrum insolitum Joseph P. Tracy 1948-8-15 18120 Humboldt on Ridge 2 mi e Grove's Prairie; Trinity Summit 1524 Comment
  HSC102165  Veratrum viride M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-3 1075 Humboldt Patterson Meadows 1566 Comment
  HSC98712  Verbascum blattaria Cara Witte 2007-8-1 616 Humboldt Friday Ridge Road (Forest Service Road 6N08). 1/2 mile north of intersection with Forest Service Road 5N09. 1414 Comment
  HSC40885  Verbascum thapsus Thomas W. Nelson, Jane Nelson 1976-6-22 2868 Humboldt On SW-facing slope at Goat Mtn. lookout 1666 Comment
  CDA30687  Verbascum virgatum M. K. Beyers, I. Shepardson 2009-9-13 247 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
  HSC55883  Veronica americana G. L. Clifton, Terry Griswold 1979-7-25 10956 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1784 Comment
  UC147878  Veronica americana Joseph P. Tracy 1908-6 2718 Humboldt Valley of Van Duzen River (opposite Buck Mountain); Northern Coast Ranges 762 Comment
  HSC12758  Veronica persica M. J. Athey 1970-12-2 24 Humboldt 1st St. in Westhaven, Trinidad Comment
  JEPS25055  Veronica scutellata Joseph P. Tracy 1921-6-12 5824 Humboldt Butler Valley; Northern Coast Ranges, Butler Valley 152 Comment
  HSC63853  Veronica serpyllifolia subsp. humifusa M. A. Baker 1979-6-27 920 Humboldt Edge of Hoopa Indian Reservation Comment
  HSC99734  Vicia americana Jimerson, J. Pageau 1979-5-24 471 Humboldt Near Orleans 226 Comment
  HSC56355  Vicia americana var. americana Griswold, Butler 1979-7-10 6327 Humboldt Near Board Camp Mtn., close to the town of Willow Creek 1372 Comment
  UC1222594  Vicia americana var. americana Harold E. Parks and Joseph P. Tracy 1942-6-23 17231 Humboldt vicinity Box Camp; Trinity Summit 1463 Comment
  UC160967  Vicia americana var. americana Mrs. M. H. Manning May 1902 Humboldt Hupa Comment
  JEPS29848  Vicia benghalensis Rimo Bacigalupi, and L. Heckard, J. Weiler 1961-6-23 7838 Humboldt about 1 mi w Carlotta (about 0.5 mi e of Hydesville) Comment
  HSC15266  Vicia gigantea S. R. Johnson 1965-3-28 21 Humboldt 1.5 mi. N of Luffenholtz Beach Comment
  HSC33770  Vicia hirsuta Paul Dryden 1975-5-24 202 Humboldt Samoa Dunes, across from the boat landing. Comment
  PASA270  Vicia sativa Frank W. Peirson 1923-7-11 Humboldt 7 miles north of Arcata Comment
  UC198596  Vicia tetrasperma Joseph P. Tracy 1916-5-31 4688 Humboldt Stitc Creek Stitz Creek (along Eel River from South Fork to Scotia); Northern Coast Ranges, Eel River 60 Comment
  HSC71614  Vicia tetrasperma J. P. Smith 1973-5-26 6832 Humboldt Scotia Bluffs along the Eel River near Rio Dell Comment
  RSA8438  Vicia villosa I. L. Wiggins 1932-7-7 5880 Humboldt Near Samoa, on the landward side of the sand dunes. Comment
  CAS-BOT-BC263949  Viola adunca L. B. Kildale 1927-4-10 3084 Humboldt Big Lagoon Comment
  HSC21773  Viola adunca J. Mustain 1963-3-29 3 Humboldt Big Lagoon Park Comment
  HSC73065  Viola adunca M. A. Baker 1980-6-16 1948 Humboldt Near Onion Mtn. 1280 Comment
  RSA46778  Viola adunca Doris Kildale Gillespie 1937-8-26 15342 Humboldt Christmas Prairie. Comment
  HSC85894  Viola cuneata Barry Silver 1986-4-13 512 Humboldt Bair Road, 6.4 mi. WSW of Hoopa Comment
  POM161057  Viola cuneata Joseph P. Tracy 1926-6-6 7560 Humboldt Hoopa Mountain. On road west from Hoopa Valley. 915 Comment
  HSC48412  Viola glabella Brad Klipfel 1973-6-10 84 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  JEPS50362  Viola glabella W. L. Jepson 1932-7-24 16376 Humboldt Camp Grant; Eel River, Camp Grant Comment
  HSC32079  Viola hallii D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5593 Humboldt Mt. Lassic and two smaller peaks to immediate E 1768 Comment
  HSC21804  Viola hallii D. E. Anderson 1967-6-10 4367 Humboldt W-facing slope on Horse Mtn. 1220 Comment
  HSC21822  Viola ocellata D. E. Anderson 1965-5-1 3557 Humboldt Along Hwy. 96, 1.9 mi. N of Willow Creek Comment
  HSC32842  Viola ocellata Thomas W. Nelson, James Nelson 1973-5-28 946 Humboldt McKeown Ranch N of Dinsmore Comment
  POM286592  Viola ocellata Lyman D. Benson 1929-7-16 1841 Humboldt Weott Ranger Station. S Fork Eel River. Comment
  CHSC68506  Viola odorata Vernon H. Oswald 1997-4-10 8329 Humboldt Elk Head, north end of Trinidad State Beach. 30 Comment
  RSA79371  Viola praemorsa subsp. praemorsa E. K. Balls, Lee W. Lenz 1952-5-12 17198 Humboldt 0.6 mi E of Dinsmore along Hwy 36 from Alton to Red Bluff. Comment
  RSA249436  Viola purpurea subsp. integrifolia D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5591 Humboldt Mount Lassic and 2 smaller peaks to immediate east. 1768 Comment
  HSC32131  Viola purpurea subsp. purpurea D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5591 Humboldt Mt. Lassic and two smaller peaks to immediate E 1768 Comment
  HSC39623  Viola purpurea subsp. purpurea Thomas W. Nelson, Jane P. Nelson 1976-6-15 2727 Humboldt Along old trail from lookout to Blocksburg 1585 Comment
  HSC21852  Viola sempervirens H. E. Parks May 1936 5677 Humboldt Spruce Cove, Trinidad. Comment
  UC164805  Viola sempervirens Joseph P. Tracy 1904-4-3 2006 Humboldt Eureka; Northern Coast Region, Eureka 0 Comment
  HSC38828  Viola sempervirens J. P. Smith, J. O. Sawyer 1973-5-12 6708 Humboldt 10.1 mi. from Hwy. 96 on Big Hill Rd. 1372 Comment
  HSC23625  Viola sheltonii J. O. Sawyer 1971-6-14 2377 Humboldt Above E fork of Horse Linto Creek 1494 Comment
  JEPS50475  Viola sheltonii Joseph P. Tracy Jul 16 1930-Jul 19 1930 8910 Humboldt near McKay Camp (South Fork Mountain); Northern Coast Ranges, South Fork Mountain 1676 Comment
  HSC9830  Vulpia bromoides T. L. Ackerman 1964-4-10 30 Humboldt At Turner Draw on U.S. 101, near Mad River. Comment
  HSC9908  Vulpia microstachys J. P. Tracy 1926-5-2 7440 Humboldt Trinity River Valley, near the south fork. 183 Comment
  CAS-BOT-BC184236  Vulpia microstachys var. pauciflora Henry M. Pollard 1948-7-19 s.n. Humboldt Between Orleans and Van Fleet ranch Comment
  HSC70921  Vulpia myuros R. York 1980-5-18 570 Humboldt Near Black Mountain 792 Comment
  CAS-BOT-BC128815  Whipplea modesta L. R. Abrams 1918-6-16 7145 Humboldt Lower arid Transition Zone, Willow Creek Comment
  CAS-BOT-BC128817  Whipplea modesta Doris K. Kildale 1928-7-24 5267 Humboldt Redwood Creek at Berry's 289 Comment
  UC1198903  Whipplea modesta Joseph P. Tracy 1942-5-16 17347 Humboldt 1 mi s Garberville (along river) 152 Comment
  CAS-BOT-BC382925  Wyethia angustifolia Alice Eastwood; John Thomas Howell 1937-6-23 4788 Humboldt Near Dinsmore's Comment
  HSC98513  Wyethia longicaulis Cara Witte 2007-5-21 67 Humboldt White Oak Opening. 1257 Comment
  UC1199272  Wyethia longicaulis Joseph P. Tracy 1934-6-14 13218 Humboldt Horse Mountain 1371 Comment
  UC1199227  Xanthium strumarium Joseph P. Tracy 1921-12-11 5982 Humboldt Alton Northern Coast Ranges, Eel River 30 Comment
  HSC39230  Xerophyllum tenax D. E. Anderson, J. P. Smith 1971-7-6 - 1282 Humboldt Horse Mtn. Comment
  HSC41257  Xerophyllum tenax Brad Klipfel 1974-6-25 447 Humboldt Horse Mtn. Comment
  UC906657  Yabea microcarpa Joseph P. Tracy 1946-1-15 17519 Humboldt Willow Creek; Trinity River Valley 152 Comment
  HSC36103  Zantedeschia aethiopica Jim Pollard 1973-11-28 32 Humboldt Near Westwood Village Apartments Comment
  CAS-BOT-BC532738  Zigadenus micranthus Harold E. Parks; Joseph P. Tracy 1934-6-27 11041 Humboldt Horse Mountain 1432 Comment



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