Search Results — 2000 specimen records retrieved (1346 records with coordinates)
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(For large data reqests, please contact Jason Alexander, jason_alexander@berkeley.edu.)

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

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A yellow cell in the column headed "?", for records with coordinates, indicates a discrepancy with respect to range as specified in the eFlora. Read more ...
? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  UC1173736  Abies grandis Joseph P. Tracy 1939-5-30 16298 Humboldt 1 mi below Dinsmore's (along bank of Van Duzen River); Van Duzan River 731 Comment
  HSC37927  Abronia latifolia Peter Sorensen 1976-5-28 Humboldt N spit Comment
  HSC62997  Abronia latifolia David Wheeler 1979-5-10 103 Humboldt Mad River Beach County Park .25 mi. NW of parking lot Comment
  BLMAR389  Abronia umbellata subsp. breviflora Jennifer Anthony-Wheeler 2004-10-10 389 Humboldt Samoa/manilla dunes, Due west of water line tower number77 3 Comment
  CAS-BOT-BC330542  Acer circinatum C. B. Wolf 1931-8-29 2368 Humboldt Redwood Highway, 3 miles N of Orick. (Davison's Ranch on Prairie Creek) 60 Comment
  CAS-BOT-BC330545  Acer circinatum Joseph P. Tracy 1933-5-21 12213 Humboldt McClellan Mt., 5 miles E. of Bridgeville 670 Comment
  HSC2785  Acer circinatum D. E. Anderson 1965-5-8 3627 Humboldt 0.6 mi. W of bridge over N Fork of the Mad River along Hwy. 299 Comment
  UC502961  Acer circinatum Joseph P. Tracy 1928-5-6 8427 Humboldt Willow Creek Canyon Northern Coast Ranges, Willow Creek Canyon 609 Comment
  HSC98921  Acer glabrum var. torreyi Cara Witte 2007-6-5 211 Humboldt Near Grouse Mountain. Along Forest Service Road 4N32. Approximately 1 mile south of intersection with 5N04. 1434 Comment
  CAS-BOT-BC331593  Acer macrophyllum Carl D. Duncan 1920-9-22 s.n. Humboldt Hoopa Valley Comment
  UC165822  Acer macrophyllum Joseph P. Tracy 1911-7-9 3461 Humboldt along Willow Creek Northern Coast Ranges, Trib of Trinity River, Willow Cr ((Tributary of Trinity River), near its mouth) 152 Comment
  SEINET11854568  Achillea millefolium J. P. Tracy 1947-1 17764 Humboldt Mouth of Little River Comment
  HSC56446  Achlys triphylla Griswold, Butler 1979-7-12 7196 Humboldt Near Groves Prairie, close to the town of Willow Creek. 1256 Comment
  HSC74572  Achlys triphylla M. A. Baker 1980-5-17 1190 Humboldt Near Le Perron Peak 792 Comment
  CAS-BOT-BC400021  Achlys triphylla W. R. Dudley 1899-6-18 s.n. Humboldt Near grade descending to Eel River Comment
  HSC3340  Achlys triphylla Lincoln Constance 1934-6-1 773 Humboldt S Fork Eel River, Bull Creek Rd. between Dyerville Bridge and Bull Creek Flat Grove. 46 Comment
  UCD94991  Achlys triphylla subsp. triphylla D. C. Hagar 1957-6-10 75 Humboldt Mill Creek, 7.5 miles north-northeast of Hoopa. 1402 Comment
  CAS-BOT-BC210650  Achnatherum lemmonii Joseph P. Tracy 1927-5-14 8000 Humboldt Trinity River Valley, near the South Fork 182 Comment
  UCD55568  Achnatherum lemmonii W. Robert Powell 1958-7-10 s.n. Humboldt 6 miles northeast of Lord Ellis Summit. 1158 Comment
  HSC96283  Acmispon micranthus J. Breton, A. Livingston 2005-6-3 2 Humboldt 19.3 mi. S of Hwy. 299 on NF1 1240 Comment
  SDSU4308  Acmispon parviflorus D. F. Howe 1962-5-22 3307 Humboldt 0.7 miles east of Orick on Bald Mt. road. 396 Comment
  UC502930  Aconitum columbianum Joseph P. Tracy 1932-7-10 10393 Humboldt Trinity Summit, Corral Prairie Klamath Mts., Trinity Summit, Corral Prairie 1524 Comment
  UC1222584  Aconitum columbianum Joseph P. Tracy 1950-7-31 19242 Humboldt n.e. side of top Grouse Mt. 1524 Comment
  HSC28929  Adiantum aleuticum Diane Johnson 1972-12-4 Humboldt Butler Valley near Big Bend Rd. Comment
  UC62712  Adiantum aleuticum Joseph Burtt Davy and Walter C. Blasdale 1899-6-21 5721 Humboldt Supply Creek Comment
  UCR123954  Adiantum aleuticum George K. Helmkamp, E. A. Helmkamp 2001-7-8 6969 Humboldt North Coast, CA Hwy 36, along the Van Duzen River, 19.6 mi east of CA Hwy 101, west of Bar W Road 137 Comment
  POM182458  Adiantum aleuticum Joseph P. Tracy, H. H. Tracy 1916-6-25 4742 Humboldt Redwood Creek, East of Trinidad 152 Comment
  POM347034  Adiantum aleuticum Lyman Benson 1928-7-13 487 Humboldt Weatt Ranger Station 61 Comment
  RSA687733  Adiantum aleuticum Anstruther Davidson 1923-10-8 17061 Humboldt Near Bridgeville Comment
  CAS-BOT-BC65627  Adiantum jordanii Doris K. Kildale 1927-3-16 2995 Humboldt Phillipsville, South Fork of Eel River Comment
  OBI37796  Aesculus californica David J. Keil 1983-7-1 17276 Humboldt 2.5 mi NE of Honeydew along Bull Crk Flats rd Comment
  UC127705  Ageratina occidentalis Joseph Burtt Davy and Walter C. Blasdale 1899-6-26 5884 Humboldt Francis Range North-Western California Comment
  HSC99561  Agoseris grandiflora K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-8-10 226 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
  UC1222936  Agoseris grandiflora var. grandiflora Joseph P. Tracy 1950-7-6 19025 Humboldt 3 mi s, sw slopes of Buck Mountain Burr Valley; Buck Mountain 1066 Comment
  UC582741  Agoseris heterophylla var. heterophylla Joseph P. Tracy 1933-5-30 12417 Humboldt (near Garberville) Redway 152 Comment
  JEPS71136  Agrostis alba W. L. Jepson 1936-8-17 17920 Humboldt near Still's Ranch (2 mi s of Field's Landing) Comment
  UCD51860  Agrostis capillaris A. H. Murphy 1947-8-5 s.n. Humboldt McComb Ranch, Bald Hills, 7-8 miles SE of Orick. Comment
  CAS-BOT-BC127456  Agrostis densiflora Joseph P. Tracy 1927-6-26 8216 Humboldt Stone Lagoon. 6 Comment
  CAS-BOT-BC127296  Agrostis exarata Palmer Stockwell 1934-7-13 64 Humboldt Clam Beach. Comment
  HSC76568  Agrostis exarata Teresa Prendusi 1981-7-24 495 Humboldt Near Whiteys Peak 1585 Comment
  RSA10027  Agrostis exarata Joseph P. Tracy 1932-7-14 10550 Humboldt Corral Prairie 1524 Comment
  RSA21206  Agrostis exarata C. B. Wolf 1937-8-10 9095 Humboldt Big Lagoon, so. side, w. side of Redwood Highway 6 Comment
  UC1145070  Agrostis exarata Joseph P. Tracy 1938-7-6 16021 Humboldt in bog Big Lagoon 6 Comment
  UC186901  Agrostis exarata J. P. Tracy 1902-6-20 1754 Humboldt vicinity Eureka 0 Comment
  UC552713  Agrostis exarata Joseph P. Tracy 1935-5-25 13857 1/2 Humboldt Fort Seward 106 Comment
  HSC76547  Agrostis gigantea Teresa Prendusi 1981-7-23 341 Humboldt Near Black Mtn. 890 Comment
  HSC26369  Agrostis hallii T. O. Osborne 1970-9-16 59 Humboldt Trinidad Bay, Prisoner Rock Comment
  BLMAR707  Agrostis hallii Jennifer Wheeler 2013-10-25 707 Humboldt Lacks Creek, Upper Round Prairie 731 Comment
  CAS-BOT-BC139452  Agrostis hyemalis Doris K. Kildale 1926-9-5 2624 Humboldt Lasseck's Peaks. Near Canal Camp. 1661 Comment
  CAS-BOT-BC139358  Agrostis idahoensis Joseph P. Tracy 1935-7-27 14303 Humboldt Trinity Summit. At McKay Prairie. 1584 Comment
  UC212879  Agrostis idahoensis Joseph P. Tracy 1919-9-22 5268 Humboldt Trinity Summit Northern Coast Ranges, Trinity Summit 1828 Comment
  UC36960  Agrostis microphylla Harley P. Chandler May, 1901 1253 Humboldt Redwood Belt North Coast Ranges, Redwood Belt 304 Comment
  HSC98859  Agrostis oregonensis Cara Witte 2008-8-5 990 Humboldt Spike Buck Mountain. Forest Service Road 5N18. 1/2 mile from intersection with National Forest 1. 1589 Comment
  HSC98624  Agrostis pallens Cara Witte 2007-7-11 500 Humboldt Grouse Mountain. Forest Service Road 5N04. Near spring. 1583 Comment
  RSA10063  Agrostis pallens Joseph P. Tracy 1932-7-17 10661 Humboldt Trinity summit. Corral Prairie 1524 Comment
  UC589898  Agrostis pallens H. S. Yates 1936-6-16 5685 Humboldt near Bayside; Eureka Quadrangle 9 Comment
  HSC76537  Agrostis scabra D. K. Imper 1981-8-12 910 Humboldt Near Tish Tang A Tang Creek. 1780 Comment
  CAS-BOT-BC138633  Agrostis stolonifera David D. Keck 1938-8-5 4771 Humboldt Big Lagoon. Comment
  UC1145072  Agrostis viridis Joseph P. Tracy 1938-8-14 16112 Humboldt along mining ditch near South Fork; Trinity River Valley 304 Comment
  HSC22532  Aira caryophyllea Dennis Anderson, J. P. Smith 1970-5-21 5085 Humboldt Scotia Bluffs, along N side of Eel River, in the vicinity of French Gulch Comment
  HSC70968  Aira caryophyllea R. York 1980-5-17 541 Humboldt Near Le Perron Peak 1066 Comment
  SACT000239  Aira caryophyllea Lyle Bibb 1963-5-11 Humboldt Coastal salt marsh near Arcata Comment
  UC37074  Aira caryophyllea Harley P. Chandler May, 1901 Humboldt Humboldt Bay North Coast Ranges 30 Comment
  CAS-BOT-BC138337  Aira caryophyllea var. caryophyllea W. R. Dudley 1899-6-1 s.n. Humboldt Eureka Penninsula. Comment
  HSC102643  Aira elegans J. P. Smith 2009-5-31 12605 Humboldt Bald Hills Road. Comment
  UC526678  Aira praecox Joseph P. Tracy 1925-6-13 7099 Humboldt Eureka Northern Coast Ranges 0 Comment
  HSC23145  Allium amplectens Norman Dennis 1965-6-19 132 Humboldt 0.25 mi S and 1.0 mi. E of junction of Barry Ridge Rd. and Eureka-Bridgeville county rd., along Ashfield Ridge Rd., 5 mi. SE of Kneeland 793 Comment
  CAS-BOT-BC460753  Allium amplectens Volney Rattan 1903-1-1 s.n. Humboldt Kneeland Prairie Comment
  UC666927  Allium campanulatum Joseph P. Tracy 1933-7-25 12863 Humboldt Grouse Mountain 1524 Comment
  SEINET3153890  Allium campanulatum N. Dennis 1965-6-19 132 Humboldt about 1/4 mi S and 1 mi E of the junction of Barry Ridge Road and the Eureka-Bridgeville county road, along Ashfield Ridge Road. About 5 mi SE of Kneeland 792 Comment
  CAS-BOT-BC469020  Allium falcifolium Carl Purdy 1937-6-1 s.n. Humboldt Grouse Mountain Comment
  HSC50950  Allium hoffmanii G. L. Clifton, Overton 1979-6-3 3774 Humboldt Near Pine Mtn., close to the town of Forest Glen 1495 Comment
  JEPS81076  Allium hoffmanii Thomas W. Nelson and Jane P. Nelson 1980-6-27 5951 Humboldt saddle between two peak e Mount Lassic (non-numbered section e of Sec. 36); Six Rivers National Forest, Blocksburg Quad. 1767 Comment
  SEINET10532720  Allium hoffmanii Thomas W. Nelson, Jane P. Nelson 1980-6-10 Nelson 5417 Humboldt Blocksburg quad. T1s, r5e, intersection of secs. 13 & 14. Along road to red mt. .5 Miles w of junction with swayback ridge rd. Serpentine bald 1372 Comment
  UC15002  Allium unifolium Joseph Burtt Davy 1899-6-11 5444 Humboldt between Hubbard's Station and Elk Prairie Comment
  HSC104412  Allium unifolium Adam N. Canter 2017-4-20 6 Humboldt BLM, Lost Coast Headland, Guthrie Creek 60 Comment
  SEINET199682  Allium validum Joseph P. Tracy 1934-8-29 13630 Humboldt South Fork Mountain at McKay Camp. 1676 Comment
  CAS-BOT-BC453427  Allotropa virgata Volney Rattan 1878-1-1 s.n. Humboldt Unspecified Comment
  CAS-BOT-BC170944  Alnus rhombifolia Doris K. Kildale 1926-9-9 2686 Humboldt Little Van Duzen River on Bridgeville - Weaverville road 640 Comment
  UC503097  Alnus rhombifolia Joseph P. Tracy 1930-8-3 9143 Humboldt Dinsmore's Ranch Northern Coast Ranges, Van Duzen River (on river opposite Buck Mt.) 670 Comment
  CAS-BOT-BC169541  Alnus rubra Carl B. Wolf 1930-10-26 1767 Humboldt SO edge of Bog Lagoon, near Redwood Highway Bridge 9 Comment
  HSC3436  Alnus rubra Doris K. Kildale 1926-7-18 2388 Humboldt Orick, Redwood Creek 9 Comment
  UC144075  Alnus rubra J. P. Tracy 1909-3-7 2943 Humboldt Immediate vicinity of Eureka 0 Comment
  SEINET10895894  Alnus rubra Harold E. Parks, Susan T. Parks 1938-4-1 Parks 24126 Humboldt Spruce Cove, Trinidad. 61 Comment
  SEINET12430631 Image available Alnus rubra J. M. Tucker 1948-9-5 1865 Humboldt Along Hwy 101 3 mi S of Scotia Comment
  HSC2176  Ambrosia chamissonis H. E. Parks Aug 1941 24181 Humboldt Big Lagoon Comment
  CAS-BOT-BC142906  Amelanchier Doris Kildale 1931-5-10 10555 Humboldt Snow Camp Comment
  HSC71166  Amelanchier alnifolia Thomas W. Nelson 1977-5-30 3412 Humboldt Base of Eight Mile Ridge upstream from Anderson's Ford. 701 Comment
  HSC74335  Amelanchier alnifolia Gail Newton 1980-6-16 152 Humboldt Near Monks Camp 1097 Comment
  HSC8841  Ammophila arenaria J. W. Bosworth 1965-5-20 54 Humboldt .25 mi. S of Samoa on the Samoa Rd. Comment
  HSC3519  Amsinckia intermedia J. W. Johnson 1962-4-21 1286 Humboldt Arcata; William Lanphere Farm about building Comment
  UC1239645  Amsinckia intermedia Joseph P. Tracy 1927-5-8 7990 Humboldt Garberville; Northern Coast Ranges 121 Comment
  RSA0089915  Amsinckia menziesii H. E. Parks 1933-03 4282 Humboldt Trinidad. Comment
  HSC17827  Anagallis arvensis Frances Oldridge 1946-1 Humboldt College Hill Comment
  UC486470  Anagallis arvensis Mrs. W. C. Emsley Jun 1932 67 Humboldt Ocean Beach Comment
  RSA1464  Anaphalis margaritacea E. R. Johnson 1929-08 1407 Humboldt Arcata Redwood Park 76 Comment
  UC963845  Anaphalis margaritacea H. E. Parks and S. T. Parks 1943-8-1 24237 Humboldt along highway Stone Lagoon Comment
  HSC36626  Anemone deltoidea A. M. Montalvo, J. D. Ackerman 1973-5-6 62 Humboldt Avenue of the Giants 3 mi. NW of Weott 274 Comment
  HSC98540  Anemone oregana Cara Witte 2008-6-9 705 Humboldt Board Camp Mountain. Forest Service Road 4N38. 1418 Comment
  UC1196195  Anemone oregana Joseph P. Tracy 1933-7-11 12679 Humboldt Horse Mtn 1524 Comment
  HSC56060  Angelica arguta G. L. Clifton, Griswold 1979-7-31 11697 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1805 Comment
  HSC21444  Angelica genuflexa D. E. Anderson 1961-9-30 1852 Humboldt Blue Lake Comment
  JEPS14171  Angelica genuflexa Joseph P. Tracy 1937-8-22 15670 Humboldt 2 mi s of Fields Landing 6 Comment
  UC673053  Angelica genuflexa Joseph P. Tracy 1940-9-26 16725 Humboldt Eureka, near south city limits Eureka 6 Comment
  UC1222615  Angelica hendersonii Joseph P. Tracy 1950-9-10 19352 Humboldt Bear River Ridge 609 Comment
Read comments
Oct 12 2007
  UC642307  Angelica hendersonii Joseph P. Tracy 1938-8-28 16134 Humboldt Trinidad 3 Comment
  HSC56087  Angelica tomentosa G. L. Clifton, Terry Griswold 1979-7-31 11776 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa. 1845 Comment
  HSC56203  Angelica tomentosa G. L. Clifton, Terry Griswold 1979-8-2 12194 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  CAS-BOT-BC271499  Anisocarpus madioides L. R. Abrams 1916-7-11 6017 Humboldt Mouth of Grizzly Creek on Van Duzen River Comment
  JEPS89480  Antennaria suffrutescens Dean W. Taylor 1991-8-15 12303 Humboldt ridge 1 mi. w. Horse Mt.; N. Coast Ranges 1493 Comment
  UC1199434  Antennaria suffrutescens Joseph P. Tracy 1938-6-13 15907 Humboldt Horse Mountain 1432 Comment
  HSC33171  Anthemis cotula Thomas W. Nelson 1973-8-19 1111 Humboldt McKeown Ranch N of Dinsmore, floodplain of Mad River Comment
  HSC38792  Anthemis cotula J. D. Ackerman 1975-8-31 655 Humboldt Lanphere Rd. near Mad River Slough, Arcata Bottoms 2 Comment
  UCD85354  Anthoxanthum occidentale A. H. Murphy 1947-2-1 s.n. Humboldt Along road 1 mile S of McCann. Comment
  HSC10095  Anthoxanthum occidentale D. W. C. Humboldt Mattole Area Comment
  UC1159497  Anthoxanthum odoratum D. L. Gray 1964-5-14 ARCA 64001 Humboldt Humboldt County 18 Comment
  UC905641  Anthoxanthum odoratum David D. Keck 1948-7-1 5968 Humboldt Trinidad Comment
  UCD73827  Anthoxanthum odoratum Malcolm A. Nobs; S. Galen Smith 1949-8-3 1208 Humboldt salt marshes bordering Humboldt Bay, about 2 miles north of Eureka. Comment
  HSC8941  Anthoxanthum odoratum Paul Shields 1955-6-10 Humboldt Arcata, Humboldt State University campus. Comment
  UC153990  Apocynum androsaemifolium Joseph P. Tracy 1909-8-1 3063 Humboldt Kneeland Prairie Northern Coast Ranges, Kneeland Prairie 762 Comment
  UC213319  Apocynum androsaemifolium Joseph P. Tracy 1919-9-23 5280 1/2 Humboldt Trinity Summit Northern Coast Ranges, Trinity Summit 1828 Comment
  HSC102054  Aquilegia formosa M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-13 959 Humboldt Forest edge surrounding Patterson Meadows 1566 Comment
  HSC102583  Aquilegia formosa M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-29 1570 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1579 Comment
  HSC97563  Aquilegia formosa var. formosa Cara Witte 2007-6-1 165 Humboldt Horse Mountain Botanical Area. Along Forest Service 6N38. 1355 Comment
  HSC103965  Arabis breweri var. breweri A. Thoele, Sydney Carothers 1995-7-13 39 Humboldt Six Rivers National Forest; Potato Hill, NE side of Pilot Creek. Take SR1 to jct. with 3N14, walk NW 1.4 mi., then SW 1/3 mi. down ridge 1498 Comment
  HSC81489  Arabis divaricarpa var. interposita Thomas W. Nelson 1979-7-11 5028 Humboldt Along trail from Grogan's Hole to North Trinity Mtn., from Grogan's Hole to summit. Comment
  HSC57322  Arabis glabra Walter Overton, Butler 1979-7-23 9542 Humboldt Near Titlow Hill, close to the town of Willow Creek 1280 Comment
  JEPS53191  Arabis suffrutescens var. horizontalis Joseph P. Tracy 1933-7-25 12878 Humboldt North Coast Ranges, Grouse Mt. 1524 Comment
  HSC3251  Aralia californica D. E. Anderson 1962-9-14 2337 Humboldt Fish Lake area Comment
  UC933379  Aralia californica Annie M. Alexander and Louise Kellogg 1948-9-3 5587 Humboldt Trinity R. near Hoopa Reservation; Trinity R. Comment
  CAS-BOT-BC128698  Arbutus menziesii Doris K. Kildale 1927-12-1 4210 Humboldt Klamath River at Orleans Comment
  OBI33237  Arbutus menziesii David J. Keil 1983-7-1 17263 Humboldt Ca. 8 mi W of jctn US 101 along Bull Creek Flats rd Comment
  UC213507  Arbutus menziesii Frank A. Graham 1919-12-20 Humboldt w side of Trinity River near Willow Creek; Northern Coast Ranges, Trinity River 152 Comment
  UC183631  Arceuthobium campylopodum Joseph P. Tracy 1912-9-1 3984 Humboldt Eureka Northern Coast Region 0 Comment
  JEPS38977  Arctostaphylos canescens Joseph P. Tracy 1935-7-14 14064 Humboldt Horse Mountain 1432 Comment
  CAS-BOT-BC25208  Arctostaphylos canescens subsp. canescens J. P. Tracy 1941-4-11 16860 Humboldt Willow Creek Canyon, along Trinity Highway Comment
  LA42321  Arctostaphylos columbiana H. E. Parks; 1931-3-25 917 Humboldt near Patrick's Point Comment
  UC1225898  Arctostaphylos columbiana Joseph P. Tracy 1947-5-24 17693 Humboldt Devil's Canyon Big Lagoon 152 Comment
  UC585912  Arctostaphylos columbiana Joseph P. Tracy 1932-2-28 9772 Humboldt Table Bluff Northern Coast Region, around Humboldt Bay 60 Comment
  UC876392  Arctostaphylos columbiana J. E. Adams 1935-5-12 1047 Humboldt Patrick's Point Comment
  UCD63199  Arctostaphylos columbiana Joseph P. Tracy 1945-3-30 17497 Humboldt Eureka. 45 Comment
  SEINET11989091  Arctostaphylos columbiana R. Gankin, Hildreth, W. R. 1967-1 1167 Humboldt 20 road mi E of Hwy 101 on Bald Hills Rd (from Orick) Comment
  UCSB11320  Arctostaphylos glandulosa Zinke, P. 1950-10-9 Humboldt King Peak 1280 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
  UC1120196  Arctostaphylos glandulosa subsp. glandulosa G. T. Nordstrom Jul 1937 1427 Humboldt 10.5 mi ene Orick; Orick Quadrangle Comment
  UC1222638  Arctostaphylos glandulosa subsp. glandulosa Joseph P. Tracy 1950-8-4 19251 Humboldt Grasshopper Peak Bull Creek State Park Comment
  CAS-BOT-BC39132  Arctostaphylos hispidula Doris K. Kildale; L. B. Kildale 1930-5-11 9529 Humboldt Bald Hills - Wiregrass Prairie 792 Comment
  RSA632796  Arctostaphylos knightii Jon E. Keeley 1996-10-13 27781 Humboldt Bald Hills Road, eastern end of Redwood National Park, 20-23 km west of Highway 96, north of Eureka. 600 Comment
  RSA632803  Arctostaphylos knightii Jon E. Keeley 1996-10-13 27761 Humboldt Bald Hills Road, eastern end of Redwood National Park, 25 km west of Highway 96, north of Eureka. 700 Comment
  UC1193138  Arctostaphylos manzanita subsp. manzanita R. H. Neuns 1950-10-10 138 Humboldt 3 mi n Thorne; Quad 29C3 304 Comment
  UC32687  Arctostaphylos manzanita subsp. manzanita Chesnut and Drew 1888-8-1 Humboldt Grouse Creek Comment
  HSC102094  Arctostaphylos nevadensis M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 997 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  HSC31439  Arctostaphylos nevadensis D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-13 5557 Humboldt Westward lower slopes of Black Lassic near Trinity Co. line. 1585 Comment
  HSC7657  Arctostaphylos nevadensis J. Pursell 1964-10-17 101714 Humboldt Road to Box Camp in Hoopa Valley 1372 Comment
  UC1187350  Arctostaphylos nevadensis R. G. Skolmen 1960-10-25 10 (2) Humboldt two and a half mi nnw Weitchepec; Quad 11D2 975 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
  RSA60536  Arctostaphylos patula John H. Thomas 1949-6-13 920 Humboldt Along trail between Le Perron Flat and Whiteys Peak. Six Rivers National Forest. 1677 Comment
  UC585903  Arctostaphylos patula Joseph P. Tracy Jul 16 1930-Jul 19 1930 9055 Humboldt along summit near Blake Lookout; Northern Coast Ranges, South Fork Mountain 1737 Comment
  RSA134148  Arctostaphylos stanfordiana P. C. Everett, E. K. Balls 1959-10-24 23954 Humboldt 6.8 mi. SW from Siskiyou-Humboldt Co. Line, Somesbar to Orleans. 152 Comment
  CAS-BOT-BC43997  Arctostaphylos uva-ursi Harley P. Chandler 1901-5-1 1133 Humboldt Humboldt Bay 3 Comment
  HSC71372  Arctostaphylos uva-ursi J. P. Smith 1971-10-6 4971 Humboldt End of Murray Rd. in McKinleyville. Comment
  RSA47099  Arctostaphylos uva-ursi var. coactilis Doris K. Kildale 1925-9-28 1358 Humboldt Samoa Comment
  UCD129125  Arctotheca calendula T. C. Fuller; G. D. Barbe 1989-6-8 4321 Humboldt Larry Pries dairy, 3.4 miles west of Main Street, on Centerville Beach Road, Ferndale. Comment
  CDA10101  Arctotheca prostrata Gordon Leppig 2000-4-9 1288 Humboldt Arcata. Union Street at 7th Street. South of Phillips House. Comment
  HSC22493  Armeria maritima subsp. californica S. V. Thompson 1967-7-24 19 Humboldt Back from beach Comment
  HSC31214  Arnica cernua D. E. Anderson 1972-6-20 5739 Humboldt Along the Redwood Valley-Hoopa Rd., E of the summit. Comment
  HSC44320  Arnica cernua Brad Klipfel 1975-6-17 669 Humboldt Horse Mtn. Comment
  HSC48024  Arnica cernua Brad Klipfel 1974-6-25 423 Humboldt Horse Mtn. Comment
  HSC65884  Arnica cernua M. A. Baker 1980-6-16 1944 Humboldt Near Onion Mtn. 1280 Comment
  SEINET2029493 Image available Arnica cernua Joseph P. Tracy 1938-6-13 15902 Humboldt Horse Mountain 1433 Comment
  UC129315  Arnica cernua Joseph Burtt Davy and Walter C. Blasdale 1899-6-19 5645 Humboldt Hoopa Mt. Comment
  UC34161  Arnica discoidea Chesnut and Drew 1888-7-21 Humboldt S. Fork Mt. Comment
  POM160898  Arnica discoidea Joseph P. Tracy 1923-6-20 6335 Humboldt Briceland 305 Comment
  CAS-BOT-BC94772  Arrhenatherum elatius R. C. Wenk; P. Hopkinson; M. Hammond; S. Spiegal 2008-6-6 832 Humboldt Humboldt Redwoods State Park. Look Prairie, 0.5 air miles N of Mattole Road, about 3 air miles W of Highway 101 243 Comment
  CAS-BOT-BC84836  Artemisia douglasiana Doris K. Kildale 1926-8-8 2472 Humboldt Dyerville Bridge 45 Comment
  HSC97439  Artemisia douglasiana Ivy Watson 2008-9-17 22 Humboldt Mad River Park on West End Rd. beside pumping station 12 Comment
  UC1222994  Artemisia pycnocephala Joseph P. Tracy 1947-8-31 17929 Humboldt Samoa Sand Dunes Comment
  POM264517  Artemisia pycnocephala H. E. Parks 1941-08 24186 Humboldt Little River State Park Comment
  HSC91927  Artemisia suksdorfii E. Mackey 1987-6-11 Humboldt Patrick's Point State Park, Palmer's Point trail to beach Comment
  SD56775  Artemisia suksdorfii Darley F. Howe 1963-7-8 3620 Humboldt 2.5 miles west of Bridgeville on Cal. 36. 149 Comment
  CAS-BOT-BC400533  Asarum caudatum Volney Rattan 1882-6-1 s.n. Humboldt Mad River Comment
  CHSC111  Asarum caudatum 1952-7-7 Humboldt Coastal. Comment
  HSC57145  Asarum caudatum Overton, Butler 1979-7-26 9936 Humboldt Near Willow Creek, E Fork, close to the town of Willow Creek 1326 Comment
  HSC98661  Asarum caudatum Cara Witte 2008-8-5 982 Humboldt Clear Lake. At end of Forest Service Road 6N01B. 1533 Comment
  RSA296721  Asarum caudatum Clark L. Miller 1979-5-13 1 -129 Humboldt East of Hwy 101 from Seawood Drive. Comment
  SEINET8714984 Image available Asarum caudatum Unknown 1936-1 s.n. Humboldt Redwood forest on Yager Road from Carlotta, elevation about 1500 feet, Humboldt County, California. 457 Comment
  UC1103509  Asarum caudatum Joseph P. Tracy 1932-7-16 10643 Humboldt Trinity Summit; woods at edge of McKay Prairie 1584 Comment
  SEINET12097904  Asarum hartwegii H. P. Chandler 1901-1 1478 Humboldt Klamath River 396 Comment
  UC23011  Asclepias speciosa J. Burtt Davy 1899-6-24 5866 Humboldt Hoopa Valley, along the river North Coast Ranges Comment
  HSC102064  Aspidotis densa M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 966 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  UC162774  Aspidotis densa Joseph P. Tracy 1911-7-6 3354 Humboldt along rd between Three Creeks and mouth of Willow Creek; Northern Coast Ranges 762 Comment
  CAS-BOT-BC27578  Astragalus agnicidus Henry Tosten 1931-6-7 s.n. Humboldt 4 miles S of Miranda Comment
  CAS-BOT-BC186562  Astragalus nuttallii var. virgatus F. H. Utech 1986-5-23 86 -385 Humboldt King Mountain Range: 0.5 mi NNW on Kings Peak Road (Humboldt Co. hwy C4A) from junction with Shelter Cove Road 600 Comment
  CAS-BOT-BC192860  Astragalus purshii var. lectulus Thomas W. Nelson; James L. Nelson 1980-6-10 5405 Humboldt Along Swayback Ridge 4-wheel drive road ca 2.5 miles north of junction with Forest Service road 1S07 1463 Comment
  HSC99540  Athyrium filix-femina K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-8-10 205 Humboldt Near North Trinity Mtn, 11. 5 mi E of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  RSA137262  Athyrium filix-femina subsp. cyclosorum I. L. Wiggins 1957-6-19 14127 Humboldt 2.5 miles west of Pepperwood in dense Redwood forest Comment
  RSA413349  Athyrium filix-femina subsp. cyclosorum R. Whittaker, W. A. Niering 1963-6-14 491 Humboldt Humboldt Redwoods, Weott Comment
  CHSC32  Athyrium filix-femina var. cyclosorum M. Anthony 1960-5-1 Humboldt Coastal. Comment
  HSC54570  Athyrium filix-femina var. cyclosorum Overton, Butler 1979-7-24 9598 Humboldt Near Titlow Hill, close to the town of Willow Cr. 1250 Comment
  HSC32331  Athysanus pusillus D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5671 Humboldt Senteney Rock, a large barren Franciscan Rock along Swayback Ridge Comment
  UC1198291  Athysanus pusillus Joseph P. Tracy 1922-5-14 6048 Humboldt Kneeland Prairie; Northern Coast Ranges, Kneeland Prairie 762 Comment
  UC1198294  Athysanus pusillus Joseph P. Tracy 1908-6 2939 Humboldt nw slope of Buck Mountain Buck Mountain; Northern Coast Ranges, Buck Mountain 1219 Comment
  HSC95384  Atriplex prostrata Andrea Pickart 2002-8-8 191 Humboldt Arcata Marsh at end of I st. 0 Comment
  UC1103328  Avena barbata Joseph P. Tracy 1923-5-20 6217 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  CHSC26753  Baccharis douglasii M. S. Taylor 1977-7-5 1428 Humboldt Around bridge over Eel River at the turnoff from Hwy 101 to Ferndale, in Fernbridge. Comment
  HSC5125  Baccharis douglasii Jerry Parker 1968-10-31 225 Humboldt South of Vista Point Comment
  UCR122378  Baccharis glutinosa George K. Helmkamp, E. A. Helmkamp 2001-7-8 7006 Humboldt North Coast, north spit of Samoa Peninsula, 0.5 mi north of CA Hwy 255 bridge over Humboldt Bay 6 Comment
  HSC79368  Baccharis pilularis subsp. consanguinea Kenneth Clark 1980-11-28 1052 Humboldt Above Point No Pass 488 Comment
  HSC89439  Barbarea verna P. A. Daly 1985-5-3 35 Humboldt Trinidad Head 61 Comment
  HSC28271  Barbarea verna Thomas W. Nelson 1971-4-12 372 Humboldt Beside Hwy. 101 at the Hookton Rd. junction Comment
  HSC82029  Bellardia trixago Thomas W. Nelson, Jane P. Nelson 1980-5-25 5344 Humboldt Along Alderpoint-Blocksburg Rd., just SE of bridge over N Dobbyn Creek 152 Comment
  UC204749  Bellis perennis Joseph P. Tracy 1918-4-7 4864 Humboldt near Trinidad; Northern Coast Ranges 30 Comment
  CAS-BOT-BC48156  Bensoniella oregona Joseph P. Tracy 1923-6-24 6363 Humboldt Bald Mountain in cold wet meadow near high prairie 1066 Comment
  HSC62832  Bensoniella oregona William Davilla 1980-10-16 1219 Humboldt Snow Camp Mtn. 1390 Comment
  RSA167308  Bensoniella oregona Joseph P. Tracy 1951-6-14 19416 Humboldt East side of Snow Camp Meadows Comment
  CAS-BOT-BC128916  Berberis aquifolium John Thomas Howell 1949-6-13 910 Humboldt Along trail between Le Perron Flat & Whitey's Peak (east of town of Orleans). 1371 Comment
  HSC74672  Berberis aquifolium Gail Newton 1981-5-16 2172 Humboldt Near Bug Creek. 1228 Comment
  UC1174869  Berberis nervosa P. C. Everett and E. K. Balls 1959-10-25 23966 Humboldt 8.8 mi ne from Blue Lake (US Hwy 299, Arcata to Willow Creek) 274 Comment
  LA212250  Berberis piperiana A Arpaia; June 1966 s.n. Humboldt Willow Creek at Trinity River. 914 Comment
  RSA167296  Bidens frondosa Joseph P. Tracy 1950-9-22 19367 Humboldt Klamath River, near Slate Creek, below Orleans 8 miles. 122 Comment
  CAS-BOT-BC412989  Bistorta bistortoides Volney Rattan 1882-1-1 s.n. Humboldt Kneeland Comment
  HSC45419  Bistorta bistortoides Thomas W. Nelson, Jane P. Nelson 1977-7-4 3595 Humboldt Margin of pond above Alder Springs 1585 Comment
  CDA42493  Blechnum spicant G. D. Barbe, T. C. Fuller 1974-6-18 1874 Humboldt Fern Canyon Road, 2.8 miles west of Highway 101, 5 miles south of Klamath River. 0 Comment
  POM87950  Blechnum spicant L. R. Abrams, R. Bacigalupi 8299 Humboldt Near northern county line Comment
  UCD114326  Boechera divaricarpa Joseph P. Tracy 1932-7-11 10396 Humboldt Trinity Summit. Open ground at corral prairie, Klamath Mountains. 1524 Comment
  CAS-BOT-BC31368  Bolboschoenus maritimus Robert F. Thorne; P. Everett 1965-8-7 35213 Humboldt Samoa Peninsula 0 Comment
  UCR138660  Bolboschoenus maritimus subsp. paludosus Gordon Leppig 1999-10-25 1268 Humboldt State Hwy 101, mile marker 61.40 2 Comment
  HSC55130  Botrychium multifidum G. L. Clifton, Griswold 1979-8-1 11945 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1692 Comment
  CDA42735  Botrychium multifidum T. C. Fuller 1961-9-28 7054 Humboldt 1.5 miles south of Samoa. 0 Comment
  CAS-BOT-BC95327  Bowlesia incana Dr. A. Kellogg; W. G. W. Harford 1868-1-1 297 Humboldt unspecified Comment
  CAS-BOT-BC420271  Boykinia occidentalis Volney Rattan 1878-1-1 s.n. Humboldt unspecified Comment
  JEPS49652  Boykinia occidentalis Harley P. Chandler June, 1901 1501 Humboldt Klamath River; North Coast Ranges, Klamath River 426 Comment
  JEPS49650  Boykinia occidentalis W. L. Jepson 1902-7-11 2012 Humboldt walls South Fork Trinity River (river bank, Martin's Ranch); walls of the South Fork Trinity River, river bank Comment
  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
  SEINET12215472  Boykinia occidentalis H. P. Chandler 1901-1 1501 Humboldt Klamath River - North Coast Ranges 427 Comment
  HSC37950  Brassica nigra Peter Sorensen 1976-6-16 Humboldt Woodley Island, Humboldt Bay Comment
  CAS-BOT-BC106290  Brickellia californica Doris K. Kildale 1926-8-29 2593 Humboldt Van Duzen River, near Strong's Station Comment
  CAS-BOT-BC106296  Brickellia californica Carl B. Wolf 1927-8-27 1158 Humboldt On the Klamath River 2 mi. below the Salmon River Comment
  JEPS18754  Brickellia greenei Joseph P. Tracy 1935-7-30 14361 Humboldt Salmon Summit 1767 Comment
  HSC33766  Briza maxima John S. Palmer 1975-5-24 368 Humboldt Off Samoa Blvd., across from boat landing Comment
  SBBG122948  Briza maxima D. Wilken with E. Painter 2007-6-4 16739 Humboldt Samoa Dunes, ca. 0.4 km W of US Coast Guard Station, North Spit, Humboldt Bay 5 Comment
  UCD57277  Briza maxima P. B. Kennedy 1929-6-13 s.n. Humboldt Etterburg. Comment
  UCD57367  Briza maxima R. N. Raynor 1935-5-22 s.n. Humboldt Fort Seward. Comment
  HSC9087  Briza maxima T. M. Mingo May 1965 Humboldt 0.25 mi. N of intersection of Fairhaven Dr. and old Hwy. 101 Comment
  SEINET9806296 Image available Briza maxima Unknown 2007-6-19 Humboldt Arcata, CA Comment
  HSC45594  Briza minor Diane L. Reed 1978-5-7 60 Humboldt 2 mi. up Friday Ridge Rd. from Hwy. 299 Comment
  CAS-BOT-BC484219  Brodiaea elegans subsp. elegans Thomas W. Nelson; Jane P. Nelson 1980-7-13 6058 Humboldt Blocksburg Quad; Along the road from Dinsmore to Anderson Ford-McKeown Ranch road; North Coast Ranges 762 Comment
  HSC98640  Brodiaea elegans subsp. elegans Cara Witte 2008-7-10 844 Humboldt National Forest 1. 5 miles south of intersection with Forest Service Road 5N04. Before a cattle guard. 1350 Comment
  RSA114096  Brodiaea stellaris Rimo C. Bacigalupi, Lincoln Constance 1951-6-13 3406 Humboldt Along State Highway 36, five miles east of Bridgeville. Comment
  UC527819  Brodiaea terrestris subsp. terrestris Ira L. Wiggins 1932-6-18 5877 Humboldt mouth of Little River Little River Comment
  HSC81940  Brodiaea terrestris subsp. terrestris D. H. Norris 1985-5-30 Humboldt Near Whitethorn Comment
  UCD58190  Bromus carinatus A. A. Beetle; G. L. Stebbins Jr. and J. P. Tracy 1942-6-2 3477 Humboldt Head of South Yager Creek, near Yager. Comment
  RSA91688  Bromus carinatus F. W. Peirson 1941-7-23 13118 Humboldt Van Damme State Park. Along the creek about 2 miles from camp. Comment
  UC1103281  Bromus carinatus var. carinatus Joseph P. Tracy 1941-6-15 16910 Humboldt Wilder Ridge 609 Comment
  HSC102146  Bromus carinatus var. marginatus M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-3 1053 Humboldt Patterson Meadows 1566 Comment
  HSC102213  Bromus carinatus var. marginatus M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 1129 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  HSC26365  Bromus carinatus var. marginatus T. O. Osborne 1970-4-5 84 Humboldt Flat-iron rock, 3/4 mi. NW of Trinidad Lighthouse. Comment
  CAS-BOT-BC155994  Bromus diandrus Henry M. Pollard 1948-7-26 s.n. Humboldt Near mouth of Camp Creek near Orleans. Comment
  HSC26275  Bromus hordeaceus Thomas W. Nelson 1971-5-31 465 Humboldt 915 Comment
  HSC79464  Bromus hordeaceus Kenneth Clark 1980-4-18 610 Humboldt Along access trail to Dead Man's Gulch, above gulch. 137 Comment
  UC1103366  Bromus hordeaceus Joseph P. Tracy 1919-5-31 5151 Humboldt near mouth of Willow Creek (Valley of Trinity River); Northern Coast Ranges 152 Comment
  UC1103273  Bromus laevipes Joseph P. Tracy 1912-7-31 3934 Humboldt Northern Coast Ranges, summit of Buck Mountain Buck Mountain; Northern Coast Ranges, Buck Mountain 1676 Comment
  UC249789  Bromus laevipes Joseph P. Tracy 1923-6-27 6378 Humboldt near the South Fork (Northern Coast Ranges, Trinity River Valley); Northern Coast Ranges, Trinity River Valley 182 Comment
  POM126124  Bromus marginatus Joseph P. Tracy 1923-6-19 s.n. Humboldt Wilder Ridge Comment
  OBI22382  Bromus orcuttianus Joseph P. Tracy 1936-8-8 15124 Humboldt Trinity Summit On ridge 2 mi E of Grove's Prairie 1463 Comment
  UC552683  Bromus orcuttianus Joseph P. Tracy 1935-7-22 14129 Humboldt Trinity Summit, at Corral Prairie Corral Prairie; Trinity Summit, Corral Prairie 1584 Comment
  UC188957  Bromus racemosus J. Burtt Davy and W. C. Blasdale 1899-7-30 6188 Humboldt Bear River Ridge; North Coast Ranges, Bear River Ridge 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
  UC204532  Bromus sterilis Joseph P. Tracy 1916-5-31 4698 Humboldt Northern Coast Ranges, along Eel River from South Fork to Scotia, Holmes Flat Holmes Flat; Northern Coast Ranges, Eel River, Holmes Flat 60 Comment
  HSC97182  Bromus tectorum Benjamin Hart, Erin Lonergan 2007-6-11 5 Humboldt 14.1 mi. S of Hwy. 299 on FS Rd. NF1 1524 Comment
  SEINET200635 Image available Bromus tectorum Joseph P. Tracy 1925-5-30 7039 Humboldt Larrabee Valley. 701 Comment
  UC212890  Bromus tectorum Joseph P. Tracy 1919-5-31 5173 Humboldt Northern Coast Ranges, at mouth of Willow Creek, tributary of Trinity River Willow Creek; Northern Coast Ranges, Willow Creek 152 Comment
  HSC72678  Bromus vulgaris J. P. Smith 1977-7-3 9242 Humboldt Six Rivers National Forest, on Rd. to Onion Lake, 4.7 mi. from junction with Hwy. 36 610 Comment
  HSC49024  Cakile maritima Patricia Shesgreen 1978-8-19 143 Humboldt Mad River Beach, Arcata 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
  UCD114937  Cakile maritima M. Barbour 1969-9-4 s.n. Humboldt West of Table Bluff (10 miles south of Eureka). Comment
  UCD114939  Cakile maritima M. Barbour 1969-12-15 s.n. Humboldt South of Silver Strand State Beach. Comment
  RSA12540  Calamagrostis C. B. Wolf 1934-7-2 5898 Humboldt wet meadow at small lake at Snow Camp. (Mts. east of Korbel) Comment
  SD112830  Calamagrostis canadensis D. F. Howe 1961-8-1 3103 Humboldt 6 miles north of Trinidad on Highway 101 Comment
  BLMAR12  Calamagrostis foliosa Brad Barr June, 1982 12 Humboldt King range, slide area above smith cabin in steep slopes Comment
  UCD56961  Calamagrostis foliosa Joseph P. Tracy 1938-6-17 15967 B Humboldt near 'Panther Gap' on road between Mattole and Bull Creek. 822 Comment
  CAS-BOT-BC185180  Calamagrostis nutkaensis A. A. Heller 1924-7-24 13880 Humboldt On the bluff at Humboldt County camp 7 miles south of Trinidad. Comment
  HSC17635  Calandrinia ciliata R. T. Forester 1963-5-6 48 Humboldt 1 mi. S of Fairhaven on Samoa Rd. Comment
  UC198582  Callitriche marginata Joseph P. Tracy 1917-6-17 4823 Humboldt Salmon Creek Valley Northern Coast Ranges, Humboldt Bay (around Humboldt Bay) 30 Comment
  UC668185  Callitriche trochlearis Joseph P. Tracy 1936-6-17 14952 Humboldt nw slope Buck Mountain (lower foothills) 762 Comment
  BLMAR537  Calocedrus decurrens Jennifer Wheeler 2009-6-23 537 Humboldt King range, On King Peak road Comment
  HSC58002  Calocedrus decurrens G. L. Clifton, Griswold 1979-7-31 11787 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1805 Comment
  HSC98964  Calocedrus decurrens Cara Witte 2007-9-14 648 Humboldt Grouse Mountain Lookout. Forest Service Road 4N70. 1649 Comment
  HSC100551  Calochortus pulchellus Carl C. Marshall May 1887 479 Humboldt S Humboldt. Comment
  HSC102535  Calochortus tolmiei M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-28 1521 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1106 Comment
  HSC74349  Calochortus tolmiei Gail Newton 1980-6-28 748 Humboldt Near Mad River Butte. 1536 Comment
  UC1103466  Calochortus tolmiei Joseph P. Tracy 1933-6-13 12592 Humboldt near summit on road from Hoopa (w to Bair's); Hoopa Mountain 914 Comment
  HSC44357  Calochortus tolmiei Brad Klipfel 1974-5-27 399 Humboldt Horse Mtn., ridge top near forks in rd. Comment
  CAS-BOT-BC32374  Calycadenia ciliosa Victor King Chesnut; Elmer Reginald Drew 1889-1-1 19899 Humboldt unspecified Comment
  POM273040  Calycadenia ciliosa H. M. Pollard 1945-8-31 s.n. Humboldt Orleans to Somes Bar, east side of Klamath River. Comment
  UC1222961  Calycadenia fremontii Joseph P. Tracy 1948-9-20 18220 Humboldt Hoopa Valley 91 Comment
  RSA381907  Calypso bulbosa Pearl Ryan 1917-6-1 s.n Humboldt Hoopa Comment
  UC1196471  Calypso bulbosa J. P. Tracy 1901-4-26 1041 Humboldt immediate vicinity of Eureka (Humboldt Hill); Humboldt Hill 0 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
  JEPS52547  Calyptridium umbellatum P. E. Goddard 1906-6 672 Humboldt Lasseck Peak Comment
  UC13637  Calyptridium umbellatum Chesnut and Drew 1888-7-21 Humboldt South Fork Mountain Comment
  HSC32545  Calystegia occidentalis subsp. occidentalis Thomas W. Nelson 1973-7-10 1030 Humboldt Humboldt/Trinity County line, Mt. Lassic (Signal Peak) 1790 Comment
  CHSC68784  Calystegia sepium subsp. limnophila Vernon Oswald 1997-6-5 8530 Humboldt Arcata Oxidation Ponds on South G St., south of Hwy 255. 6 Comment
  HSC46384  Calystegia silvatica subsp. disjuncta Catherine Chin 1978-8-19 107 Humboldt 11th and B St., Arcata Comment
  HSC6363  Calystegia soldanella J. W. Johnson 1962-6-4 1413 Humboldt Arcata, W.M. Lanphere Farm, Samoa peninsula Comment
  HSC6364  Calystegia soldanella J. W. Johnson 1961-8-17 1021 Humboldt W.M. Lanphere Farm, Samoa Peninsula Comment
  HSC93522  Calystegia soldanella Gordon Leppig, Sylvia Leppig, Kai Neander 1998-5-6 747 Humboldt Dry Lagoon State Park, between ocean and Dry Lagoon 2 Comment
  JEPS61560  Camassia quamash subsp. quamash Hilda W. Grinnell 1932-6-12 Humboldt below McKay Camp (South Fork Mountain); South Fork Mountain Comment
  RSA296724  Camissonia cheiranthifolia subsp. cheiranthifolia J. P. Smith, T. W. Nelson 1977-6-30 9202 Humboldt Samoa Peninsula just east of the drag strip. Comment
  UC249615  Camissoniopsis cheiranthifolia subsp. cheiranthifolia Joseph P. Tracy 1921-7-10 5852 Humboldt Big Lagoon Northern Coast Region 6 Comment
  SEINET10462986  Campanula prenanthoides Ira L. Wiggins 1930-7-22 Wiggins 4690 Humboldt Along bank of Redwood Creek between Blue Lake and Willow Creek Comment
  CAS-BOT-BC37425  Cardamine californica Doris K. Kildale 1929-4-27 7444 Humboldt Lord Ellis road near Bald Mountain junction. (road to Willow Creek). 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
  HSC40907  Cardamine californica J. O. Sawyer 1970-4-24 2189 Humboldt Groves Prairie below Lone Pine Ridge, N of Willow Creek Comment
  HSC6690  Cardamine californica D. E. Anderson 1962-3-17 1934 Humboldt 4 mi. S of Lone Star Ranch Comment
  UC30033  Cardamine californica W. C. Blasdale 1896-6-9 Humboldt Fitzgeralds Comment
  UC492257  Cardamine californica var. californica Joseph P. Tracy 1927-3-27 7863 Humboldt Willow Creek Canyon Northern Coast Ranges, Willow Creek Canyon 457 Comment
  HSC99082  Cardamine californica var. californica C. Witte 2007-5-10 21 Humboldt Board Camp. 1/2 miles from National Forest 1, on Forest Service Road 4N38. 1395 Comment
  RSA734791  Cardamine californica var. cardiophylla LeRoy E. Detling 1935-4-20 1642 Humboldt Lansdale Grove of Redwoods. Comment
  UC249682  Cardamine californica var. sinuata Joseph P. Tracy 1921-3-20 5426 Humboldt 12 mi e Hydesville (Van Duzen River at Blue Slide); Northern Coast Ranges, Van Duzen River at Blue Slide 91 Comment
  UC1199194  Cardamine nuttallii Joseph P. Tracy 1933-6-11 12665 Humboldt Horse Mountain Northern Coast Ranges, Horse Mountain 1371 Comment
  HSC26791  Cardamine oligosperma Thomas W. Nelson 1971-4-27 426 Humboldt Along Jolly Giant Creek, HSU campus Comment
  UC1199208  Cardamine oligosperma Joseph P. Tracy 1921-4-24 5439 Humboldt Phillipsville Flat Northern Coast Ranges, South Fork Eel River (South Fork Eel River) 91 Comment
  HSC100460  Cardamine paucisecta Carl C. Marshall Mar 1886 154 Humboldt Everywhere. Comment
  UC161490  Cardamine pensylvanica Joseph P. Tracy 1905-4-16 2164 Humboldt region about Humboldt Bay (near Bucksport); Northern Coast Region, Humboldt Bay region, nr Bucksport 0 Comment
  UCD150616  Cardionema ramosissimum Joseph P. Tracy 1947-7-3 17765 Humboldt at mouth of Little River. 6 Comment
  RSA0097053  Cardionema ramosissimum R. F. Thorne, Percy C. Everett 1965-8-5 35155 Humboldt Samoa Dunes. 3 Comment
  UC1222954  Carduus tenuiflorus Joseph P. Tracy 1942-6-28 17266 Humboldt toward Hungry Hollow Angel's Ranch; Bald Mountain, Hungry Hollow Comment
  CAS-BOT-BC281809  Carduus tenuiflorus Doris K Niles 1951-1-1 s.n. Humboldt Niles Ranch Comment
  RSA167248  Carduus tenuiflorus Joseph P. Tracy 1947-6-8 17703 Humboldt 0.5 mile west of town Comment
  UC725496  Carex A. A. Heller 1923-7-10 13797 Humboldt Eel River between Scotia and Pepperwood Comment
  JEPS26007  Carex abrupta Joseph P. Tracy 1939-7-9 16340 Humboldt Snow Camp 1402 Comment
  CAS-BOT-BC17794  Carex amplifolia Joseph Prince Tracy 1935-6-23 13986 Humboldt French Camp Ridge. 1066 Comment
  UC562287  Carex aquatilis var. dives Joseph P. Tracy 1934-7-30 13504 Humboldt along coast in front of South End of Stone Lagoon (Dry Lagoon); Dry Lagoon 6 Comment
  SEINET10644708  Carex athrostachya Joseph P. Tracy 1934-7-18 Tracy 13426 Humboldt 1524 Comment
  HSC70465  Carex bolanderi Gail Newton 1980-7-20 1629 Humboldt Near Bell Swamps 1426 Comment
  HSC74641  Carex bolanderi M. A. Baker 1980-5-18 1359 Humboldt Near Black Mtn. 792 Comment
  HSC75485  Carex bolanderi J. O. Sawyer 1980-7-18 3604 Humboldt North Trinity Mountain Research Natural Area, north of Mill Creek Lake to Red Cap Hole. Comment
  CAS-BOT-BC19438  Carex bolanderi Doris K. Kildale 1927-7-23 3800 Humboldt Hoaglin Lake near Lassicks Peak [Lassics Lookout?]. Comment
  POM289957  Carex bolanderi Lyman Benson 1928-7-11 s.n. Humboldt Weott Ranger Station, S Fork Eel. 61 Comment
  HSC75766  Carex concinnoides Denis Kearns 1981-6-24 6 Humboldt Near Cedar Camp 1219 Comment
  CAS-BOT-BC34277  Carex concinnoides Joseph Prince Tracy 1927-6-19 8190 Humboldt Northern Coast Range. Patrick's Point, in fern covered prairies on coast terraces. 60 Comment
  HSC76385  Carex concinnoides L. P. Janeway 1982-6-20 13 Humboldt NE facing slope near ridgetop 1 mi. SE of Horse Mtn. along FS 6N36 1384 Comment
  UC1152065  Carex densa Joseph P. Tracy 1950-7-6 18987 Humboldt lower end of Burr Valley on nw slope of Buck Mountain Burr Valley, Buck Mountain 1066 Comment
  SEINET4110861  Carex diandra D. W. Taylor 2004-1 19127 Humboldt Pond in the divide between Frost Creek and Martin Creek, about 1 air mile east of the Alderpoint Road. 518 Comment
  UC562272  Carex echinata Joseph P. Tracy 1933-7-25 12845 Humboldt North Coast Ranges, Grouse Mountain Grouse Mountain; North Coast Ranges, Grouse Mountain 1524 Comment
  CHSC90287  Carex echinata subsp. echinata Thomas W. Nelson; Jane P. Nelson 1987-6-11 8602 Humboldt North Coast Ranges. Box Spring at Box Camp. Along trail to North Trinity Mountain. 1524 Comment
  CAS-BOT-BC19964  Carex exsiccata Joseph Prince Tracy 1934-7-13 13388 Humboldt Dow's Prairie. 60 Comment
  CAS-BOT-BC20012  Carex feta H. D. Ripley; R. C. Barneby 1945-6-16 6823 Humboldt NW of Harris. 883 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
  HSC89402  Carex geyeri L. P. Janeway 1984-6-17 845 Humboldt On ridge E of Horse Mtn. 1433 Comment
  UC197229  Carex gynodynama Joseph P. Tracy 1906-4-29 2430 Humboldt Northern Coast Region, south slope of Humboldt Hill. Comment
  UC2020226  Carex gynodynama Joseph P. Tracy 1906-6-24 2508 Humboldt Northern Coast Region, south slope of Humboldt Hill. Comment
  CAS-BOT-BC22317  Carex harfordii Joseph Prince Tracy 1935-6-8 13938 Humboldt Eureka. 60 Comment
  UC1103098  Carex harfordii Joseph P. Tracy 1935-6-8 13939 Humboldt at Eureka Northern Coast Ranges 0 Comment
  HSC70469  Carex hendersonii J. P. Tracy 1905-6-25 2202 Humboldt Eureka 0 Comment
  UC562724  Carex hendersonii Joseph P. Tracy 1933-5-28 12415 Humboldt Carlotta Northern Coast Ranges 60 Comment
  CHSC90271  Carex hoodii Thomas W. Nelson; Jane P. Nelson 1987-6-11 8544 Humboldt North Coast Ranges. Along Forest Road 13N01 18 miles from junction with State Route 96. 1066 Comment
  CAS-BOT-BC7844  Carex infirminervia Joseph Prince Tracy 1935-7-23 14162 Humboldt Trinity Summit. Wooded hillsides, lower end of Brett Hole. 1584 Comment
  CHSC85986  Carex laeviculmis L. P. Janeway 2003-7-30 7946 Humboldt High North Coast Ranges. Small spring and seep 100 m south-west of Clear Lake, 3.1 km southeast of Titlow Hill. 1494 Comment
  RSA88658  Carex laeviculmis F. W. Peirson 1941-7-23 13091 Humboldt Van Damme State Park. Along the creek about 2 miles from camp. Comment
  HSC99369  Carex lenticularis K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-6-24 18 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  CHSC90274  Carex lenticularis var. impressa Thomas W. Nelson; Jane P. Nelson 1987-6-11 8598 Humboldt North Coast Ranges. Box Spring at Box Camp. Along trail to North Trinity Mountain. 1524 Comment
  CHSC93148  Carex lenticularis var. impressa Thomas W. Nelson; Jane P. Nelson 1987-6-11 8584 Humboldt North Coast Ranges. At trail head and along trail to Grogans Hole. Comment
  CAS-BOT-BC31260  Carex lenticularis var. impressa Joseph Prince Tracy 1935-7-23 14148 Humboldt Trinity Summit, Corral Prairie, in wet meadow. 1584 Comment
  CAS-BOT-BC28505  Carex lenticularis var. limnophila Carl B. Wolf 1927-8-22 788 Humboldt Big Lagoon Comment
  HSC102201  Carex leptopoda M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-4 1115 Humboldt Along trail (abandoned Road 6E74) from Andy's Camp to Patterson Meadows 1563 Comment
  HSC76798  Carex leptopoda L. P. Janeway 1982-6-16 8 Humboldt Near small tributary to Jolly Giant Creek below Arcata High school 9 Comment
  CAS-BOT-BC31584  Carex luzulina var. luzulina Joseph Prince Tracy 1930-7-16 8987 Humboldt South Fork Mountain, in wet meadow at McKay Camp. 1676 Comment
  UC562626  Carex luzulina var. luzulina Joseph P. Tracy Jul 16-19 1930 8987 Humboldt McKay camp, South Fork Mountain Northern Coast Ranges 1676 Comment
  UC195926  Carex luzulina var. luzulina Joseph P. Tracy 1914-7-4 4543 Humboldt High Prairie on Bald Mountain Northern Coast Ranges 1066 Comment
  UC562730  Carex mendocinensis Joseph P. Tracy 1933-7-25 12873 Humboldt North Coast Ranges, Grouse Mountain. Comment
  UC103569  Carex multicaulis Joseph P. Tracy 1912-7-31 3940 Humboldt near Buck Mountain summit; Northern Coast Ranges 1524 Comment
  UC562260  Carex multicaulis Joseph P. Tracy 1927-3-27 7862 Humboldt near South Fork Trinity River; Northern Coast Ranges, Trinity River Valley 182 Comment
  HSC76818  Carex obnupta L. P. Janeway 1982-6-12 3 Humboldt Dry Lagoon 3 Comment
  UC1598395  Carex obnupta Joy Mastrogiuseppe, Tom Nelson 1986-7-22 4353 Humboldt Burr Creek Burr Valley Comment
  RSA246864  Carex obnupta Robert F. Thorne, Percy C. Everett 1965-8-7 35199 Humboldt Big Lagoon, south end. 2 Comment
  UC562241  Carex obnupta Joseph P. Tracy 1936-6-9 14892 Humboldt 3 mi e Cape Mendocino; Cape Ridge 243 Comment
  NY11255  Carex olympica J. P. Tracy 1911-7-7 3390 Humboldt At the meadows on mountain side, three miles northwest of junction of Willow creek with Trinity River, and near Beebe's Ranch 914.4 Comment
  CHSC107145  Carex pachycarpa R. E. Brainerd 2009-7-23 1570 Humboldt Coast Range, South Fork Mountain; headwaters of Kerlin Creek; 19.6 air miles west-northwest of Hayfork; Forest Service Road 3N32. UTM zone 10 453507E 4494866N. 1716 Comment
  UC1115820  Carex pachystachya Joseph P. Tracy 1939-7-9 16342 Humboldt Snow Camp 1402 Comment
  CAS-BOT-BC119234  Carex pachystachya Joseph Prince Tracy 1930-7-10 8868 Humboldt Brannan Mountain 1219 Comment
  CAS-BOT-BC119163  Carex pansa Joseph Prince Tracy 1935-7-18 14104 Humboldt Low sandy ground at edge of salt marsh, next to Table Bluff. Around Humboldt Bay. 3 Comment
  CAS-BOT-BC118598  Carex praticola Joseph Prince Tracy 1914-5-3 4421 Humboldt At Eureka 60 Comment
  HSC70466  Carex rossii J. P. Tracy 1904-5-1 2045 Humboldt Eureka 0 Comment
  SEINET958239  Carex rossii H. E. Parks, Joseph P. Tracy 1933-1 12161 Humboldt Vicinity of Trinidad 61 Comment
  SEINET4152293  Carex subbracteata Unknown 1928-6-24 8470 Humboldt Valley of South Yager Creek 762 Comment
  UC1152076  Carex subbracteata Joseph P. Tracy 1950-6-25 18892 Humboldt Burr Valley, NW slope of Buck Mountain 1066 Comment
  HSC102158  Carex subfusca M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-3 1066 Humboldt Patterson Meadows 1555 Comment
  CAS-BOT-BC116677  Carex subfusca Joseph Prince Tracy 1935-7-27 14296 Humboldt Open places at McKay Prairie, along creek in meadow. 1584 Comment
  CAS-BOT-BC115536  Carex unilateralis Joseph Prince Tracy 1938-7-5 16007 Humboldt Carlotta. Wet place in open flat by old Strong's District School House, 5 mi E of town. 45 Comment
  UC1222837  Castilleja affinis subsp. affinis Joseph P. Tracy 1950-6-15 18799 Humboldt 7 mi n Harris; Mail Ridge Comment
  HSC97203  Castilleja affinis subsp. affinis Kiera A. Freeman, Heather J. Perry 2007-6-4 2 Humboldt 8 mi. S of Hwy. 299 on NF1 1372 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
  HSC20521  Castilleja affinis subsp. litoralis D. E. Anderson 1962-7-10 2244 Humboldt Luffenholtz Beach, about 2 mi. S of Trinidad along old Hwy. 101 Comment
  HSC49619  Castilleja affinis subsp. litoralis R. York 1979-5-15 289 Humboldt N of College Cove, 1 mi. N of Trinidad Comment
  HSC32372  Castilleja ambigua subsp. humboldtiensis Linda M. Barker 1974-5-19 198 Humboldt S G St., Arcata 0 Comment
  JEPS76823  Castilleja ambigua subsp. humboldtiensis L. R. Heckard with T. I. Chuang and R. C. Bacigalupi 1978-5-27 4804 Humboldt about 1.2 mi n Eureka bridge (Samoa peninsula); Samoa peninsula Comment
  OBI9388  Castilleja ambigua subsp. humboldtiensis Joseph P. Tracy 1938-7-15 16068 Humboldt Mouth of Eel River 3 Comment
  HSC56184  Castilleja applegatei Gilbert Muth 1979-8-1 12116 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1677 Comment
  CAS-BOT-BC255520  Castilleja applegatei var. pinetorum Clarence R. Quick 1959-7-24 59 -32 Humboldt Bee Mt., ca. 12 miles southwest of Orleans Comment
  HSC56116  Castilleja arachnoidea Gilbert Muth 1979-8-1 11889 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1877 Comment
  JEPS10344  Castilleja exserta subsp. latifolia Joseph P. Tracy 1938-7-12 16058 Humboldt Table Bluff, w of lighthouse Table Bluff 6 Comment
  RSA183597  Castilleja franciscana D. E. Anderson 1962-7-10 2244 Humboldt Luffenholtz Beach, about 2 miles south of Trinidad along old 101 highway. Comment
  HSC56041  Castilleja miniata G. L. Clifton, Griswold 1979-7-31 11608 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1719 Comment
  HSC38886  Castilleja miniata J. O. Sawyer 1970-6-25 2300 Humboldt 1646 Comment
  HSC102518  Castilleja miniata subsp. miniata M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-28 1505 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1106 Comment
  HSC99015  Castilleja pruinosa Cara Witte 2007-6-1 163 Humboldt Horse Mountain Botanical Area. Along Forest Service 6N38. 1311 Comment
  JEPS3911  Castilleja pruinosa Joseph P. Tracy with Dr. F. W. Pennell 1940-7-7 16669 Humboldt Grouse Mt. 1463 Comment
  UCD112128  Ceanothus foliosus R. N. Raynor 1935-5-22 s.n. Humboldt Fort Seward. Comment
  CAS-BOT-BC49658  Ceanothus foliosus var. foliosus Fay A. Mac Fadden 1935-6-22 13698 Humboldt Near Squaw Creek, Cummings Comment
  HSC101667  Ceanothus gloriosus var. exaltatus J. P. Smith, J. O. Sawyer 2011-4-23 13128 Humboldt Kings Peak Road, 3.2 miles from its junction with Shelter Cove Rd Comment
  HSC43178  Ceanothus gloriosus var. exaltatus R. Sutherland 1975-6-19 0 .19675 Humboldt Kelly Rd. ENE of Shelter Cove 640 Comment
  JEPS42412  Ceanothus incanus Lincoln Constance 1934-6-15 884 Humboldt summit of Grasshopper Peak South Fork Eel River Comment
  UC1198004  Ceanothus integerrimus Joseph P. Tracy 1921-6-19 5839 Humboldt ridge to n Willow Creek (between Willow Creek and campbell Creek, near Langdon's Gopher Camp.); Brannon Mountain, Northern Coast Ranges 762 Comment
  SEINET13945948 Image available Ceanothus integerrimus D. E. Anderson 1965-1 3657 Humboldt At W end of bridge over Trinity River, ca 1/2 mi S of Willow Creek; T6N R5E SEC32 Comment
  RSA46467  Ceanothus integerrimus var. californicus Doris K. Kildale 1927-7-3 3635 Humboldt Willow Creek Flat. Comment
  HSC97627  Ceanothus integerrimus var. integerrimus Cara Witte 2007-6-5 209 Humboldt Near Grouse Mountain. Along Forest Service Road 4N32. Approximately 1.25 miles south of intersection with 5N04. 1405 Comment
  HSC37083  Ceanothus oliganthus var. sorediatus R. Sutherland 1975-5-8 14 .8575 Humboldt Mattole Rd. 1.0 mi E of Petrolia, bank of Mattole River 67 Comment
  HSC60193  Ceanothus parryi J. P. Smith, J. O. Sawyer 1975-4-6 8057 Humboldt N of Briceland on rd. to Hwy. 101 Comment
  UC249582  Ceanothus parryi Joseph P. Tracy 1921-5-27 5808 Humboldt near Humboldt-Mendocino County line; Northern Coast Ranges, South Fork of Eel River 152 Comment
  UC1198017  Ceanothus pumilus Joseph P. Tracy 1946-5-4 17527 Humboldt Willow Creek Canyon, along Trinity Highway 609 Comment
  HSC18328  Ceanothus thyrsiflorus J. F. Knezevich 1968-5-14 442 Humboldt 11 mi. S of Ferndale on rd. to Cape Mendocino 305 Comment
  RSA172183  Ceanothus thyrsiflorus Robert F. Thorne 1957-9-2 19005 Humboldt Eel River. Burlington State Park, just S of Weott. Comment
  RSA600896  Ceanothus thyrsiflorus Louis C. Wheeler 1959-8-1 7618 Humboldt Queens Peak Mine. Comment
  CAS-BOT-BC52867  Ceanothus velutinus Joseph P. Tracy 1932-7-17 10698 Humboldt Klamath Mountains - open ground at Corral Prairie 1524 Comment
  HSC18343  Ceanothus velutinus P. W. Shields May 1955 Humboldt 7 mi W of Hoopa Comment
  HSC55641  Ceanothus velutinus var. velutinus Overton, Butler 1979-7-24 9697 Humboldt Near Friday Camp, close to the town of Willow Creek. 1250 Comment
  UC673087  Centaurea calcitrapa Joseph P. Tracy 1940-10-17 16760 Humboldt near Dyerville (South Fork Station) 45 Comment
  CDA7083  Centaurea calcitrapa T. C. Fuller 1960-8-25 4974 Humboldt Around Pacific Lumber Company barn, across Eel River from South Fork. 0 Comment
  CDA7084  Centaurea calcitrapa J. F. Hart 1963-9-17 Humboldt Whitlow, Eel River, 2 miles east of McCann. 0 Comment
  SEINET200850  Centaurea calcitrapa J. P. Tracy 1940-10-17 16760 Humboldt South Fork Station near Dyerville 46 Comment
  JEPS46931  Centaurium muehlenbergii Joseph P. Tracy 1931-8-9 9610 Humboldt Blue Slide Northern Coast Ranges, Van Duzen River 91 Comment
  RSA144572  Centaurium muehlenbergii Peter H. Raven, Richard Snow 1958-7-20 13629 Humboldt Along Friday Ridge Road to Grouse Mountain, 1.5 miles west of junction with United States Highway 299. Comment
  UC1537306  Cerastium arvense Gordon H. True Jr. 1936-5-11 457 Humboldt 12 mi. w. Miranda (gully on w. slope of Elk Ridge); Elk Ridge 457 Comment
  HSC39961  Cerastium glomeratum Linda M. Barker 1976-4-13 1381 Humboldt Lanphere-Christensen Dunes, 3 mi. W of Arcata Comment
  HSC79373  Cerastium glomeratum Kenneth Clark 1980-3-27 552 Humboldt Above Dead Man's Gulch 183 Comment
  UCSB1850  Cerastium glomeratum Parks, H.; Parks, S. 1944-04 Humboldt Spruce Cove, Trinidad 60 Comment
  HSC68022  Cerastium glomeratum J. P. Smith, Steve Selva 1970-6-30 4140 Humboldt Comment
  UC62197  Ceratophyllum demersum W. C. Blasdale 1896-6-3 Humboldt Blue Lake Comment
  UC1199058  Cercis occidentalis Joseph P. Tracy 1930-9-8 9176 Humboldt Willow Creek Northern Coast Ranges, Trinity River Valley 152 Comment
  UC160965  Cercis occidentalis Harley P. Chandler June, 1901 1428 Humboldt Klamath River North Coast Ranges 304 Comment
  UC902138  Cercocarpus betuloides var. betuloides Joseph P. Tracy 1946-7-7 17612 Humboldt Trinity River Valley, at Willow Creek Willow Creek; Trinity River Valley, Willow Creek 152 Comment
  CAS-BOT-BC85656  Chamaecyparis lawsoniana Doris K. Kildale 1926-8-15 2502 Humboldt Willow Creek Canyon 769 Comment
  HSC31650  Chamaecyparis lawsoniana Timothy B. Devine 1974-5-4 320 Humboldt 1/4 mi. N of junction of Hwy. 299 and Titlow Hill Rd., E facing slope 875 Comment
  HSC99051  Chamaecyparis lawsoniana Cara Witte 2008-6-27 772 Humboldt Waterhole off Forest Service Road 5N10. Approximately 2 miles east of intersection with National Forest 1. 1365 Comment
  RSA47095  Chamaecyparis lawsoniana Doris K. Kildale 1926-8-15 2522 Humboldt Willow Creek Flat-- up Willow Creek above[?] 3 mi. from mouth 152 Comment
  HSC55122  Chamerion angustifolium subsp. circumvagum G. L. Clifton, Griswold 1979-8-1 11922 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1692 Comment
  UC144090  Chamerion angustifolium subsp. circumvagum J. P. Tracy 1903-8-9 1938 Humboldt Immediate vicinity of Eureka 0 Comment
  JEPS31528  Chamerion angustifolium subsp. circumvagum Lincoln Constance 1934-6-18 899 Humboldt swamp border of N. Dyerville Flat South Fork Eel River, Bull Creek Region (near S. Fork R.R. Sta. and P.O.) Comment
  CAS-BOT-BC68265  Cheilanthes gracillima Marshall Avery Howe 1896-6-6 s.n. Humboldt Kneeland Prairie Comment
  CAS-BOT-BC451380  Chimaphila menziesii L. B. Kildale 1930-8-10 10530 Humboldt Snow Camp, head of Redwood Creek Comment
  CAS-BOT-BC451386  Chimaphila menziesii Henry M. Pollard 1946-9-2 s.n. Humboldt Orleans Nat. Trail 1524 Comment
  HSC38318  Chimaphila menziesii J. D. Ackerman, A. M. Montalvo 1975-6-18 467 Humboldt Big Hill Rd., 7.9 mi. E of Hoopa and Hwy. 96 Comment
  HSC102198  Chimaphila umbellata M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-4 1112 Humboldt Along trail (abandoned Road 6E74) from Andy's Camp to Patterson Meadows 1563 Comment
  CAS-BOT-BC451496  Chimaphila umbellata Henry M. Pollard 1986-8-28 s.n. Humboldt Near summit, Orleans Mt. 1828 Comment
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Feb 21 2020
  UC176054  Chimaphila umbellata Joseph P. Tracy 1913-7-20 4368 Humboldt near Three Creeks on Willow Creek Rd.; N. Coast Ranges 1066 Comment
  UC404019  Chlorogalum pomeridianum var. pomeridianum P. E. Goddard 1901-7 11 Humboldt Hupa Comment
  UC1073189  Chlorogalum pomeridianum var. pomeridianum George B. Rossbach 1955-6-10 613 Humboldt route 101 two mi n Stephens Redwood Grove; south branch of Eel River Comment
  POM270419  Chrysolepis chrysophylla Joseph P. Tracy 1933-8-6 12933 Humboldt French Camp Ridge. 1067 Comment
  RSA46774  Chrysolepis chrysophylla Doris Kildale Gillespie 1937-8-26 15366 Humboldt Christmas Prairie. Comment
  UC1585408  Chrysolepis chrysophylla R. Raiche, K. Zadnik, and H. Forbes 1989-10-2 UCBG 31 Humboldt W of Hoopa, just E of Pine Ridge Summit Bair Rd.; U.C. Botanical Garden 970 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
  UC1196374  Chrysolepis chrysophylla var. chrysophylla Joseph P. Tracy 1913-7-13 4357 Humboldt Patrick's Point; Northern Coast Ranges 30 Comment
  HSC98791  Chrysolepis chrysophylla var. minor Cara Witte 2007-9-3 639 Humboldt Horse Mountain Botanical Area. Road 6N38. 1 mile east of Horse Mountain Mine. 1259 Comment
  CAS-BOT-BC36360  Chrysolepis sempervirens Joseph P. Tracy 1937-7-29 15583 Humboldt South Fork Mountain; barren rocky places along summit near Blake Lookout 1706 Comment
  CAS-BOT-BC420344  Chrysosplenium glechomifolium Doris K. Kildale 1927-4-10 3079 Humboldt Prarie Creek, Russ Grove of Redwoods Comment
  SD58270  Cicuta douglasii W. L. Jepson 1936-8-17 17930 Humboldt Marsh south of Salmon Creek Comment
  UCD127284  Cicuta douglasii R. V. Parke; J. M. Tucker 1953-5-30 2652 Humboldt near mouth of Salmon Creek, east side of Highway 101, around 8 miles south of Eureka. Comment
  RSA183599  Cinna latifolia D. E. Anderson 1965-9-5 4085 Humboldt Along Mad river, ca. 3 miles south of Blue Lake Comment
  HSC70355  Circaea alpina subsp. pacifica M. A. Baker 1980-6-7 1864 Humboldt Near Ammon Creek 732 Comment
  UC562518  Circaea alpina subsp. pacifica Joseph P. Tracy 1936-8-7 15088 Humboldt head of Little Hors-Linto Creek (Trinity Summit); Trinity Summit 1371 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
  SEINET200853  Cirsium breweri Joseph P. Tracy 1924-7-6 6717 Humboldt Near Ruby Creek on the Willow Creek Hwy north coast ranges Comment
  SEINET3442935  Cirsium cymosum T. H. Haig 1960-6-16 Humboldt Kneeland, Kneeland Comment
  CAS-BOT-BC285527  Cirsium occidentale var. candidissimum Doris K. Kildale 1926-5-2 1999 Humboldt Kneeland Prairie - summit 853 Comment
  UC129598  Cirsium occidentale var. candidissimum Mrs. M. H. Manning Jul 20 1901-Jul 30 1901 Humboldt near Hupa; Bald Hill Comment
  HSC94090  Cirsium occidentale var. venustum B. Villegas 1998-8-5 Humboldt Nr. Berry Summit on Titlow Hill Rd, 3.9 mi. S of Hwy. 299 Comment
  OBI56358  Cirsium occidentale var. venustum B. Villegas 1998-8-5 s.n. Humboldt North Coast Ranges. Nr berry Summit on Titlow Hill Rd, 3.9 mi S of hwy 299 Comment
  RSA671131  Cirsium occidentale var. venustum B. Villegas 1998-8-5 s.n. Humboldt Nr. Berry Summit on Titlow Hill Road, 3.9 miles south of Hwy. 299 Comment
  CAS-BOT-BC288717  Cirsium remotifolium Doris K Niles 1948-7-26 4 Humboldt Eel River bottom, A. D. Niles Field Comment
  HSC98726  Cirsium remotifolium var. odontolepis Cara Witte 2008-7-2 806 Humboldt Forest Service Road 4N38. 2 miles north of intersection to Board Camp Lookout. Near gate. 1401 Comment
  HSC32535  Cirsium vulgare Thomas W. Nelson 1973-9-3 1127 Humboldt McKeown Ranch N of Dinsmore Comment
  HSC40956  Cirsium vulgare Linda M. Barker 1976-8-24 1684 Humboldt 3 mi. W of Arcata Comment
  UC1119201  Cirsium vulgare H. L. Person 1931-7-30 Humboldt Fieldbrook Eureka Quadrangle, Fieldbrook Comment
  CAS-BOT-BC285771  Cirsium vulgare John Thomas Howell 1931-6-17 6723 Humboldt Redwood Highway 1 1/2 miles n. of Orick Comment
  HSC5385  Cirsium vulgare J. W. Johnson 1961-9-10 1113 Humboldt Arcata, S of Dune 3 N, Christenson Farm, Samoa Pennisula Comment
  UCR123961  Clarkia affinis George K. Helmkamp, E. A. Helmkamp 2001-7-8 6967 Humboldt North coast hills., Calif. Hwy 36, 2.2 mi west of Dinsmore 732 Comment
  UC902167  Clarkia amoena Joseph P. Tracy 1948-8-22 18110 Humboldt Table Bluff Ridge 91 Comment
  CAS-BOT-BC160953  Clarkia amoena subsp. amoena Doris K. Kildale 1928-7-9 5699 Humboldt Bug Creek - Chaparral Mountain 914 Comment
  JEPS43543  Clarkia amoena subsp. huntiana W. L. Jepson 1927-7-3 12369 Humboldt Garberville 228 Comment
  RSA0059979  Clarkia amoena subsp. whitneyi C. L. Hitchcock, J. S. Martin 1939-7-14 5432 Humboldt 1 mile east of Shelter Cove Comment
  UC1537616  Clarkia concinna subsp. concinna Gordon H. True Jr. 1936-5-11 455 Humboldt w Miranda; Salmon Creek 457 Comment
  UC144076  Clarkia davyi Joseph P. Tracy 1907-7-20 2592 Humboldt Ocean Beach Northern Coast Region, Humboldt Bay Comment
  CAS-BOT-BC164593  Clarkia gracilis subsp. gracilis Harley P. Chandler 1901-6-1 1363 Humboldt Hupa Indian Reservation 152 Comment
  UC125958  Clarkia gracilis subsp. sonomensis Mrs. M. H. Manning 1902-1 Humboldt near Hupa Comment
  JEPS43640  Clarkia gracilis subsp. sonomensis Lincoln Constance 1934-5-23 618 Humboldt upper end Look Prairie; South Fork Eel River, Bull Creek Region 365 Comment
  UC902180  Clarkia gracilis subsp. sonomensis Joseph P. Tracy 1945-7-4 17511 Humboldt Willow Creek Trinity River Valley 152 Comment
  CAS-BOT-BC172511  Clarkia purpurea subsp. quadrivulnera Volney Rattan 1878-1-1 s.n. Humboldt Unspecified Comment
  JEPS43687  Clarkia purpurea subsp. quadrivulnera Joseph P. Tracy 1932-6-26 10264 Humboldt Valley of South Yager Creek Northern Coast Ranges 762 Comment
  UC160994  Clarkia purpurea subsp. quadrivulnera Joseph P. Tracy 1911-7-5 3307 Humboldt near mouth Willow Creek (tributary of Trinity River); Northern Coast Ranges 182 Comment
  UC180230  Clarkia purpurea subsp. quadrivulnera Joseph P. Tracy 1914-7-5 4569 Humboldt High Prairie Northern Coast Ranges, Bald Mountain 1066 Comment
  UC562526  Clarkia purpurea subsp. quadrivulnera Joseph P. Tracy 1936-6-10 14924 Humboldt mountain slopes w of mouth South Fork of Trinity River 457 Comment
  HSC17709  Claytonia parviflora subsp. parviflora Elrid H. Spinas 1948-5-22 34 Humboldt Horse Mtn. Comment
  HSC101982  Claytonia perfoliata M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-12 879 Humboldt Patterson Meadows 1566 Comment
  HSC90481  Claytonia perfoliata Jean Hanson 1981-5-10 133 Humboldt Indian Island, Eureka, W end of island Comment
  HSC78959  Claytonia perfoliata subsp. perfoliata L. P. Janeway, K. Berg 1984-4-11 726 Humboldt N Spit of Humboldt Bay, turnout along Samoa Rd., across from boat ramp just N of Coast Guard Station 3 Comment
  UC672998  Claytonia rubra subsp. rubra Joseph P. Tracy 1933-6-13 12579 Humboldt near summit road from Hoopa westward to Bair's; Hoopa Mountain 1066 Comment
  CAS-BOT-BC443893  Claytonia sibirica Carl B. Wolf 1927-8-22 799 Humboldt Big Lagoon Comment
  SBBG69724  Claytonia sibirica H. and M. Dearing 1939-6-21 3689 Humboldt E fork of Willow Crk Comment
  UC13660  Claytonia sibirica Chesnut and Drew 1888-7-8 Humboldt Arcata Comment
  CAS-BOT-BC443889  Claytonia sibirica C. D. Duncan 1920-9-27 s.n. Humboldt Supply Creek Canon [Canyon] near Hoopa Comment
  HSC99019  Claytonia sibirica C. Witte 2007-5-18 35 Humboldt Along National Forest 1. Approximately 1 mile north of intersection with 5N09. 1456 Comment
  RSA168883  Claytonia sibirica Joseph P. Tracy 1951-6-21 19521 Humboldt Everett Beck s house, Hydesville Comment
  HSC14644  Clianthus puniceus R. A. Magie 1964-5-3 58 Humboldt 2 mi. N of Trinidad on old Hwy. to Crescent City. Comment
  HSC14390  Clinopodium douglasii S. V. Thompson 1967-7-24 21 Humboldt Back from beach Comment
  CAS-BOT-BC499343  Clintonia andrewsiana Marcus E. Jones 1924-4-28 s. n. Humboldt Scotia Comment
  HSC100554  Clintonia andrewsiana Carl C. Marshall May 1885 69 Humboldt Redwood forests. Comment
  SEINET12047067  Clintonia andrewsiana F. H. Utech, Utech, C. L. 1972-1 72 -610 Humboldt Arcata, Humboldt State University Forest, W of campus 198 Comment
  CAS-BOT-BC238026  Collinsia Doris Kildale Gillespie 1931-6-7 10601 Humboldt South Fork Mt., Blake Lookout 1726 Comment
  UC1196748  Collinsia grandiflora Joseph P. Tracy 1930-7-6 8854 Humboldt Valley of South Yager Creek 762 Comment
  HSC96271  Collinsia linearis Eric Schori, Kazuyuki Ishimaru 2005-6-15 12 Humboldt About 18 miles S of Hwy. 299 1400 Comment
  RSA21322  Collinsia linearis Carl B. Wolf 1937-8-13 9216 Humboldt North coast range, 8 mi. east of Hoopa Valley on new road towards Trinity summit. 1220 Comment
  UC1196756  Collinsia linearis Joseph P. Tracy 1930-7-23 9140 Humboldt lower slopes of Horse Mountain Horse Mountain 1066 Comment
  HSC58045  Collinsia rattanii Gilbert Muth 1979-8-1 11904 Humboldt Near Mill Creek Lakes, close to Hoopa 1692 Comment
  HSC48398  Collinsia torreyi Brad Klipfel 1973-6-10 84 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 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
  HSC23477  Collomia heterophylla D. E. Anderson, J. O. Sawyer, J. P. Smith 1970-5-10 5061 Humboldt Along road from Redwood Creek to Hoopa, 1-3 mi. W of Hoopa Comment
  UC60862  Collomia heterophylla Harley P. Chandler June, 1901 1401 Humboldt Klamath River North Coast Ranges 213 Comment
  JEPS71046  Collomia heterophylla Lincoln Constance 1934-5-24 628 Humboldt forest bordering e side lower Look Prairie; Bull Creek Area 45 Comment
  SEINET6969874  Collomia heterophylla Wanda P. Vestal, A. G. Vestal 1937-6-23 s.n. Humboldt Saddle near east end of Bald Hills, southeast of Orick. Comment
  JEPS14142  Conioselinum pacificum Joseph P. Tracy 1913-8-31 4388 Humboldt near Indianola (s end of Humboldt Bay); Northern Coast Region, Humboldt Bay Region 0 Comment
  HSC18094  Coptis laciniata J. P. Tracy 1941-4-8 16856 Humboldt Willow Creek Canyon along Trinity Hwy. 762 Comment
  HSC104334  Coptis laciniata James Regan, Humboldt Redwood Co., LLC 2009-4-1 33 Humboldt Snow Camp Rd., Bald Mtn. Creek Comment
  CAS-BOT-BC133717  Corallorhiza Doris Kildale 1931-6-6 10868 Humboldt Field redacted by CAS, contact the data manager for more information Comment
  HSC44517  Corallorhiza maculata Brad Klipfel 1973-7-1 125 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC45234  Corallorhiza maculata Thomas W. Nelson, Jane P. Nelson 1977-7-1 3569 Humboldt N side of ridge between Bear Creek & Blanket Creek 1524 Comment
  HSC30139  Corallorhiza striata A. Montalvo, J. D. Ackerman 1974-4-14 171 Humboldt 100 m from intersection of Hwy. 299 along Chezem Rd., just W of Redwood Creek Comment
  HSC63024  Corallorhiza striata M. A. Baker 1979-6-24 903 Humboldt 2 km. S of Brush Mtn. Comment
  HSC96799  Cordyline australis Gordon Leppig 2004-5-11 2153 Humboldt Eureka, Cooper Slough S of Myrtle Avenue 2 Comment
  RSA167256  Corethrogyne filaginifolia var. californica Joseph P. Tracy 1947-6-8 17705 Humboldt Carlotta; open flat by old Strong's District School House, 5 miles east of town. 61 Comment
  RSA0019573  Cornus Doris K. Kildale 1937-8-29 15350 Humboldt Dinsmore's. Comment
  OBI15277  Cornus nuttallii Joseph P. Tracy 1950-10-7 19384 Humboldt Trinity river valley, at Willow crk Comment
  RSA167408  Cornus nuttallii Joseph P. Tracy 1950-10-7 19384 Humboldt Trinity River Valley, at Willow Creek. Comment
  UC1196906  Cornus sericea subsp. sericea Joseph P. Tracy 1900-9-10 967 Humboldt near Hydesville; Northern Coast Region 60 Comment
  UC183572  Cornus sericea subsp. sericea Joseph P. Tracy 1912-10-20 4010 Humboldt Alton Northern Coast Region, Alton 30 Comment
  RSA46902  Cornus sessilis Doris K. Kildale 1926-8-15 2507 Humboldt Willow Creek. 152 Comment
  UC275558  Corylus californica Joseph P. Tracy 1923-8-19 6537 Humboldt Lawrence Creek near Kneeland Prairie 457 Comment
  HSC57139  Corylus cornuta subsp. californica Overton, Butler 1979-7-25 9919 Humboldt Near Grouse Mtn., close to the town of Willow Creek 1646 Comment
  HSC104410  Corylus cornuta subsp. californica Adam N. Canter 2017-6-15 9 Humboldt Near Fields Landing; Humboldt Hill, Spring Street 100 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
  CHSC102885  Cotoneaster simonsii Peter F. Zika 2008-10-19 24227 Humboldt North Coast Nco. E side of Route 101, near Exit 728 for Trinidad Beach. 110 Comment
  RSA167384  Cotula australis Joseph P. Tracy 1943-4-10 17414 Humboldt Eureka Comment
  HSC5421  Cotula australis D. E. Anderson 1963-3-16 2388 Humboldt At foot of Scotia Bluffs Comment
  HSC59049  Cotula coronopifolia Thomas Wood 1979-4-20 116 Humboldt At Clam Beach, off Hwy. 101 ca. 7 mi. N of Arcata 3 Comment
  RSA20802  Crataegus douglasii Carl B. Wolf 1937-8-13 s.n. Humboldt North Coast Range, 12 miles E of Hoopa Valley on new road towards Trinity Summit. 1677 Comment
  CAS-BOT-BC290340  Crepis acuminata Joseph P. Tracy 1935-7-30 14382 Humboldt Salmon Summit 2103 Comment
  CAS-BOT-BC290589  Crepis capillaris David D. Keck; J. Clausen 1935-6-16 3397 Humboldt Orick Comment
  HSC26921  Crepis capillaris Brad Klipfel 1973-7-24 221 Humboldt Arcata Comment
  HSC5927  Crepis capillaris J. L. Baker 1965-4-13 46 Humboldt 4 mi. N of Arcata on North Bank Rd. Comment
  RSA246937  Crepis capillaris R. F. Thorne, Percy C. Everett 1965-8-8 35236 Humboldt N. edge of Eureka, E. of Hwy. 101 5 Comment
  RSA32733  Crepis capillaris A. A. Heller 1923-7-9 13777 Humboldt Near Blue Lake, 5 miles from Arcata. Comment
  HSC56938  Crepis pleurocarpa Overton, Butler 1979-7-23 9412 Humboldt Near Horse Mtn., close to the town of Willow Creek 1478 Comment
  HSC7973  Croton setiger H. D. Sumner 1959-7-14 Humboldt Between Hoopa and Redwood Creek 305 Comment
  BLMAR759  Cryptantha Jennifer Wheeler 2015-5-12 759 Humboldt King range, Along Telegraph Ridge btwn Oat and Spanish 670 Comment
  HSC41196  Cryptantha affinis Thomas W. Nelson 1977-7-4 3611 Humboldt Along road N of Alder Springs. 1524 Comment
  HSC57991  Cryptantha affinis G. L. Clifton, Griswold 1979-7-31 11739 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1805 Comment
  UC525587  Cryptantha flaccida Joseph P. Tracy 1924-6-11 6694 Humboldt near Blue Lake (at Essex); Northern Coast Region, Mad River, Essex 15 Comment
  JEPS67641  Cryptantha intermedia Harley P. Chandler Jun 1901 1302 Humboldt Hupa Indian Reservation North Coast Ranges 152 Comment
  HSC78612  Cryptantha leiocarpa L. P. Janeway, Amy Eisenberg 1984-4-24 743 Humboldt On N Spit of Humboldt Bay, SE side of intersection of Samoa and Fairhaven Rds. and E of the Willow patch 3 Comment
  HSC95656  Cryptantha leiocarpa Andrea Pickart 2002-4-3 26 Humboldt Samoa Dunes, City of Eureka airport. 0 Comment
  POM126498  Cryptantha leiocarpa Joseph P. Tracy 1906-5-13 2457 Humboldt Sand Dunes of Ocean Beach at Humboldt Bay. Comment
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Jan 23 2011
  HSC58237  Cryptantha torreyana Walter Overton 1979-8-1 12396 Humboldt Near Mill Creek, Middle Fork, close to the town of Hoopa. 1341 Comment
  HSC54886  Cryptogramma acrostichoides G. L. Clifton, Griswold 1979-7-25 10895 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1784 Comment
  HSC74218  Cryptogramma acrostichoides M. A. Baker 1980-7-23 3147 Humboldt Near Orleans Mtn. 1859 Comment
  RSA24187  Cynoglossum grande C. B. Wolf 1941-3-2 9987 Humboldt N Coast Range. Bull Creek-Petrolia Road. 12 miles W of Redwood Highway. 457 Comment
  SEINET12280946  Cynoglossum grande J. P. Tracy 1950-1 18647 Humboldt ca 5 mi N of Bridgeville, on the road to the South Yager Valley Comment
  UC582617  Cynoglossum occidentale Joseph P. Tracy 1936-8-8 15125 Humboldt on Ridge 2 mi. e. Grove's Prairie (Trinity Summit); Trinity Summit 1524 Comment
  RSA183563  Cyperus eragrostis D. E. Anderson 1963-9-29 2848 Humboldt Fish Lake. Comment
  SEINET3909435  Cyperus eragrostis J. P. Smith, Advanced Plant Taxonomy Class 1971-10-9 4990 Humboldt The Mad River above the Fish Hatchery.; 0 Comment
  CAS-BOT-BC114624  Cyperus eragrostis Joseph Prince Tracy 1935-7-17 14099 Humboldt Trinity River Valley at Willow Creek. 152 Comment
  RSA365064  Cyperus eragrostis J. P. Smith, Steve Selva 1970-6-14 3823 Humboldt Along Calif. 96 at Whitmore Creek. 152 Comment
  CAS-BOT-BC113831  Cyperus niger var. capitatus Henry M. Pollard 1944-9-1 s.n. Humboldt Near Orleans. Comment
  HSC47957  Cypripedium californicum Brad Klipfel 1974-9-17 579 Humboldt Horse Mountain Comment
  HSC55124  Cystopteris fragilis G. L. Clifton, Griswold 1979-8-1 11924 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1692 Comment
  HSC40373  Cytisus scoparius Linda M. Barker 1976-3-11 1322 Humboldt 3 mi. W of Arcata Comment
  HSC89445  Cytisus scoparius P. A. Daly 1984-5-13 20 Humboldt Along trail at Trinidad Head 61 Comment
  SEINET12152438  Cytisus scoparius J. P. Tracy 1950-1 18830 Humboldt Eureka Comment
  HSC39235  Danthonia californica D. E. Anderson, J. P. Smith 1971-7-28 - 1270 Humboldt 2.5 mi. S of Blue Lake along the Mad River. Comment
  UC70789  Danthonia californica Joseph Burtt Davy and Walter C. Blasdale 1899-6-19 5678 Humboldt Hoopa Mt. Comment
  UC184354  Danthonia californica var. americana Joseph P. Tracy 1912-6-9 3650 Humboldt Alton Northern Coast Region 30 Comment
  CAS-BOT-BC420361  Darmera peltata Volney Rattan 1882-1-1 s.n. Humboldt unspecified Comment
  UC169898  Datisca glomerata Harley P. Chandler June, 1901 1518 Humboldt Klamath River; North Coast Ranges, Klamath River 426 Comment
  UC1197350  Daucus pusillus J. P. Tracy 1901-7-29 1228 Humboldt immediate vicinity Eureka (hillside in Connick's Field) 0 Comment
  UC1197352  Daucus pusillus Joseph P. Tracy 1901-8-2 1248 Humboldt near Hydesville; Northern Coast Region 60 Comment
  UC1196322  Delphinium decorum subsp. decorum J. P. Tracy 1904-5-1 2044 Humboldt bluff back of Bucksport; immediate vicinity of Eureka 0 Comment
  HSC101980  Delphinium decorum subsp. tracyi M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-12 877 Humboldt Patterson Meadows 1566 Comment
  CAS-BOT-BC9026  Delphinium decorum subsp. tracyi John Rehling 1975-5-12 71 Humboldt Bald Hills, 2 miles up Williams Ridge Road. Comment
  HSC97177  Delphinium decorum subsp. tracyi Benjamin Hart, Erin Lonergan 2007-6-4 2 Humboldt Grouse Mtn., Coldsprings Camp, 6.5 mi. up Titlow Hill Rd. 1372 Comment
  HSC48682  Delphinium glaucum Brad Klipfel 1973-7-31 242 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC85771  Delphinium hesperium Andrea Begnoche, Leonel Arguello, Bobbi Schnell 1987-4-24 41 Humboldt 24 mi. E of Blue Lake on Titlow Rd., 100 yds. from Hwy. 299 854 Comment
  UC1222579  Delphinium hesperium subsp. pallescens Joseph P. Tracy 1950-6-23 18875 Humboldt hillside along creek 3 mi n Blocksburg; Larrabee Creek Comment
  CAS-BOT-BC9960  Delphinium nudicaule Volney Rattan 1878-1-1 s.n. Humboldt not specified Comment
  HSC98172  Delphinium nudicaule Allan R. Marshall 1962-5-11 9 Humboldt 50 yds. in front of N side of Hwy. 299 610 Comment
  UC184715  Delphinium nudicaule Joseph P. Tracy 1913-6-14 4128 Humboldt opposite Buck Mountain; Northern Coast Ranges, valley of Van Duzen River, Dinsmore's 762 Comment
  HSC73733  Delphinium nuttallianum M. A. Baker 1980-7-19 3019 Humboldt Near Bret Hole. 1814 Comment
  JEPS60594  Delphinium nuttallianum Joseph P. Tracy 1933-6-13 12570 Humboldt on road from Hoopa westward to Bair's (near summit); Hoopa Mountain 1066 Comment
  CAS-BOT-BC121960  Delphinium trolliifolium Doris K. Kildale 1927-5-15 3300 Humboldt Petrolia Comment
  CAS-BOT-BC121975  Delphinium trolliifolium Mrs. G Earle Kelly 1924-6-1 s.n. Humboldt Kneeland Prairie Comment
  HSC46069  Delphinium trolliifolium G. N. Bos 1965-5-15 276 Humboldt Berry Summit near Hwy. 299 793 Comment
  CAS-BOT-BC121966  Delphinium trolliifolium Mrs. H. C. Cantelow 1941-4-19 s.n. Humboldt 8.4 miles SW of Ferndale on road to Cape Mendocino. Comment
  CAS-BOT-BC121972  Delphinium trolliifolium Lester Rowntree 1938-6-4 s.n. Humboldt Stone Lagoon, near Orick Comment
  HSC36241  Delphinium trolliifolium John Rehling 1975-5-12 72 Humboldt 4 mi. S of Orick on Hwy. 101 Comment
  UC1196342  Delphinium trolliifolium Joseph P. Tracy 1906-4-29 2037 Humboldt near Fields Landing; Northern Coast Region, region about Humboldt Bay 0 Comment
  HSC9590  Deschampsia cespitosa D. E. Anderson 1961-9-30 1843 Humboldt Divide Lake. 915 Comment
  UC1100295  Deschampsia cespitosa subsp. beringensis Malcolm A. Nobs and S. Galen Smith 1949-8-3 1167 Humboldt 1 mi. s. Fields Landing; Eel R. Valley Comment
  CAS-BOT-BC194290  Deschampsia cespitosa subsp. cespitosa Doris Kildale 1931-5-10 10679 Humboldt Snow Camp Comment
  UC1131481  Deschampsia cespitosa subsp. holciformis H. S. Yates 1936-6-16 5677 Humboldt 1 mi. n.e. Samoa; Eureka Quad. Comment
  CAS-BOT-BC201770  Deschampsia elongata L. R. Abrams 1918-6-16 7153 Humboldt Willow Creek Comment
  HSC13422  Deschampsia elongata D. C. Juve 1964-5-16 37 Humboldt Campbell Creek Ranger Station, Camp Tish-Tang, Hwy 96. Comment
  HSC37256  Deschampsia elongata Lon Hall 1975-6-19 393 Humboldt About 2 mi. N of Shelter Cove Rd. on Horse Mtn. Rd. 549 Comment
  HSC102126  Descurainia incana M. R. Mesler, Robin Bencie, K. A. Wayman 2011-8-2 1030 Humboldt Crogan Rocks, ~.25 mi. east of Crogan Hole 1759 Comment
  HSC8356  Dicentra formosa Eugene Andreuccetti 1964-4-11 18 Humboldt 1/2 mi. S of Garberville on Hwy. 101 Comment
  HSC8366  Dicentra formosa J. R. Kahl 1962-4-2 13 Humboldt 2 mi. S of Trinidad along Hwy. 101, 10 yds. off road Comment
  UC1281812  Dichelostemma capitatum Richard Spellenberg 1965-6-14 1121 Humboldt about 2 mi e Kneeland; Kneeland Prairie Comment
  JEPS64151  Dichelostemma capitatum Milo S. Baker 137 Humboldt South Fork Yager Creek Comment
  HSC97967  Dichelostemma congestum Cara Witte 2007-7-2 392 Humboldt Cold Spring. 1/2 mile south of Titlow Hill. 1406 Comment
  UC1950449  Dichelostemma congestum Barbara Ertter with Thomas J. Delendick 1987-5-16 6919 Humboldt Vista Point just W of Berry Summit on Hwy 299, open grassy S-facing slope Comment
  HSC24401  Dichelostemma ida-maia J. O. Sawyer 1970-6-24 2216 Humboldt Ridge on Big Hill Rd., E of Hoopa 1189 Comment
  UC1198184  Dichelostemma ida-maia Joseph P. Tracy 1930-6-21 8773 Humboldt Larrabee Valley 731 Comment
  BLMAR210  Dichelostemma ida-maia Jennifer Anthony-Wheeler 1996-7-9 210 Humboldt Pilot ridge. 1280 Comment
  CAS-BOT-BC501027  Dichelostemma ida-maia Louise A. Boyd; Katherine Donahoe 1923-5-1 s.n. Humboldt Unspecified Comment
  HSC45244  Dichelostemma ida-maia Thomas W. Nelson, Jane P. Nelson 1977-7-1 3574 Humboldt Along rd. 2S08 below Goat Rock 1524 Comment
  RSA53854  Dichelostemma ida-maia Henry M. Pollard 1946-8-16 s.n. Humboldt Across river from Orleans. Comment
  SEINET3885616  Dichelostemma ida-maia John Sawyer 1970-6-24 2216 Humboldt Hoopa quad. Serpentine ridge on Big Hill Road east of Hoopa.; 0 1189 Comment
  UC1198179  Dichelostemma ida-maia Frank A. Graham 1935-7-27 Humboldt lower end Crogan Hole; Trinity Summit 1463 Comment
  UCSB13002  Dichelostemma ida-maia Muller, Katherine 1954-6-21 Humboldt Mad River Camp #2 on Mad River, below Ruth P.O. Comment
  CAS-BOT-BC153325  Diplacus layneae Henry M. Pollard 1946-9-2 s.n. Humboldt Orleans Mt. Trail 1524 Comment
  JEPS61826  Disporum hookeri W. L. Jepson 1932-8-8 16489 Humboldt Chaney ranch, Canoe Creek Comment
  UC30077  Disporum hookeri Harley P. Chandler May, 1901 1089 Humboldt North Coast Ranges 152 Comment
  RSA33404  Disporum smithii Doris K. Kildale 1927-3-20 2927 Humboldt Phillipsville Comment
  UC535741  Disporum smithii Eleanor Armstrong 1169 B Humboldt Richardson Grove Comment
  SEINET201059 Image available Dodecatheon hendersonii Joseph P. Tracy 1927-5-15 8061 Humboldt Hoopa Mountain; near summit on road west from Hoopa to Bair's. 1067 Comment
  HSC17863  Dodecatheon hendersonii E. C. Murczek 1964-4-4 31 Humboldt 5 mi. N of Hoopa along side road Comment
  UC1046562  Dodecatheon jeffreyi R. Bacigalupi, L. Constance, J. P. Tracy, R. Moran, R. L. Rodriguez, and S. Carlquist 1951-6-14 3418 Humboldt ridge between Mad River and Redwood Creek (edge of meadow at Snow Camp, Bald Mountain); ridge btw Mad River and Redwood Creek, Bald Mt, Snow Camp 1432 Comment
  JEPS14476  Downingia cuspidata Joseph P. Tracy 1935-5-25 13843 Humboldt Fort Seward 106 Comment
  HSC97948  Downingia elegans Cara Witte 2007-7-2 396 Humboldt Mud Lake. Off National Forest 1, near Buck Flat. 1569 Comment
  RSA79374  Draba verna E. K. Balls, Lee W. Lenz 1952-5-12 17200 Humboldt 0.6 mi E of Dinsmore along Hwy 36 from Alton to Red Bluff. Comment
  UC552294  Draba verna Joseph P. Tracy 1934-3-11 13147 Humboldt gravel bar of Klamath River North Coast Ranges, Klamath River, Weitchpec 91 Comment
  CAS-BOT-BC401537  Drosera rotundifolia Doris K. Kildale 1929-8-5 8772 Humboldt Big Lagoon Comment
  CAS-BOT-BC157794  Drymocallis lactea var. lactea Joseph P. Tracy 1932-7-11 10406 Humboldt At Corral Prairie 1524 Comment
  HSC89449  Dryopteris arguta P. A. Daly 1984-5-8 16 Humboldt Trinidad Head 61 Comment
  HSC99640  Dryopteris arguta T. Jimerson, J. Pageau 1979-7-31 700 Humboldt Near Whiting Ridge. Close to town of Hyampom 1204 Comment
  CAS-BOT-BC70875  Dryopteris arguta Ira L. Wiggins 1957-6-21 14140 Humboldt E side of road, 1 mi. S of Garberville Comment
  SBBG56296  Dryopteris oregana L. Rowntree 1931-7-24 Humboldt Carlotta Comment
  SFV7745  Dysphania botrys T. Gordon, K. Kimbrough 1975-8-22 1225 Humboldt Eel River. 61 Comment
  UC526835  Echinochloa muricata var. microstachya Joseph P. Tracy 1930-10-12 9209 Humboldt Eel River on gravel bars Alton to Fortuna; Northern Coast Region, Eel River 15 Comment
  CAS-BOT-BC113437  Eleocharis acicularis Henry M. Pollard 1945-8-28 s.n. Humboldt Near Orleans. Pond near Harley place. Comment
  OBI22607  Eleocharis acicularis Joseph P. Tracy 1934-7-13 13393 Humboldt Dow's Prairie Comment
  UC666876  Eleocharis acicularis Joseph P. Tracy 1937-8-12 15626 Humboldt Lake Prairie Bald Mountain (edge of bog) 1066 Comment
  UCD49713  Eleocharis acicularis Joseph P. Tracy 1934-7-13 13393 Humboldt Carpeting dried-up bed of pond. Dow's Prairie. 60 Comment
  UC183687  Eleocharis obtusa Joseph P. Tracy 1911-7-7 3401 Humboldt 3 mi NW of jct. of Willow Creek with Trinity River, at the meadows on mountain side Northern Coast Ranges 914 Comment
  SD129632  Eleocharis pachycarpa Harold E. Parks June 1934 5275 Humboldt Trinidad, Spruce Cove. (IPB 10/07) Comment
  HSC96566  Eleocharis pachycarpa Gordon Leppig 1997-6-19 449 Humboldt Big Lagoon Bog, Big Lagoon County Park 3 Comment
  CAS-BOT-BC113205  Eleocharis parishii Henry M. Pollard 1944-9-1 s.n. Humboldt Near Orleans Comment
  HSC98996  Eleocharis quinqueflora Cara Witte 2008-7-16 925 Humboldt Mud Lake. Off National Forest 1, near Buck Flat. 1569 Comment
  RSA10130  Elymus X hansenii Joseph P. Tracy 1930-7-19 9054 Humboldt South Fork Mountain; open glades long summit near Blake Lookout 1738 Comment
  UC1137130  Elymus X macounii August L. Hormay 1932-5-12 Humboldt Bull Creek Road; near bridge Comment
  CAS-BOT-BC227348  Elymus elymoides Doris K. Kildale 1925-8-17 1260 Humboldt Trinity Summit 1917 Comment
  HSC9713  Elymus glaucus D. E. Anderson 1965-5-15 3718 Humboldt Along Hwy. 96, 1.9 miles N of Willow Creek. Comment
  UCD61892  Elymus glaucus A. H. Shunk 1923-7-21 Humboldt Bridgeville. Comment
  UC526849  Elymus multisetus H. E. Parks and Joseph P. Tracy 1934-7-6 11141 Humboldt Iaqua Northern Coast Ranges 609 Comment
  CAS-BOT-BC204331  Elymus trachycaulus subsp. trachycaulus David D. Keck 1944-7-11 5491 Humboldt 3 mi. N. E. of Capetown 152 Comment
  UC526802  Elytrigia repens Joseph P. Tracy 1925-9-13 7267 Humboldt Eel River North Coast Ranges (mouth, on river bank) 6 Comment
  UC146136  Epilobium brachycarpum Joseph P. Tracy 1909-7-31 3040 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  CDA18995  Epilobium canum subsp. latifolium P. Haggard 2000-9-18 PDR P 071016 Humboldt Along U.S.F.S Rd. 1, in the vicinity of Blue Lake. 0 Comment
  UC169921  Epilobium ciliatum subsp. ciliatum Harley P. Chandler June, 1901 1530 Humboldt Klamath River North Coast Ranges 304 Comment
  UC198619  Epilobium ciliatum subsp. ciliatum Joseph P. Tracy 1916-9-5 4768 Humboldt 4 mi above mouth; Northern Coast Ranges, South Fork of Eel River 60 Comment
  UC203989  Epilobium ciliatum subsp. ciliatum Joseph P. Tracy 1918-7-6 5046 Humboldt near Humboldt-Mendocino County line; Northern Coast Ranges, South Fork of Eel River 152 Comment
  POM32458  Epilobium ciliatum subsp. ciliatum Joseph P. Tracy 1916-9-5 4768 Humboldt North Coast Ranges: South Fork of Eel River 4 miles above the mouth 61 Comment
  UC668282  Epilobium ciliatum subsp. glandulosum Joseph P. Tracy 1937-8-12 15649 Humboldt in and around meadow Snow Camp 1402 Comment
  HSC54670  Epilobium foliosum Overton, Butler 1979-7-25 9908 Humboldt Near Grouse Mtn., close to the town of Willow Creek 1646 Comment
  UC505116  Epilobium foliosum Joseph P. Tracy 1930-6-21 8786 Humboldt Larrabee Valley Northern Coast Ranges 701 Comment
  JEPS39329  Epilobium hallianum Joseph P. Tracy 1925-5-30 7046 Humboldt McClellan Mountain Northern Coast Ranges 822 Comment
  UC630642  Epilobium hallianum Joseph P. Tracy 1939-5-30 16302 Humboldt on river opposite Buck Mountain; Northern Coast Ranges, Van Duzen River, Dinsmore's Ranch 670 Comment
  UC505128  Epilobium minutum Joseph P. Tracy 1932-5-1 9843 Humboldt Alton North Coast Ranges, Van Duzen River 30 Comment
  SEINET10632323  Epilobium oreganum Jane P. Nelson, Thomas W. Nelson 1975-7-20 Nelson 2053 Humboldt T2S, RSE, Sec 13; wet boggy serpentine soil under Jeffrey pine forest beside Rd 2508 to Pine Mtn. Comment
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Feb 3 2021
  CAS-BOT-BC171849  Epilobium septentrionale Doris K. Kildale 1929-8-4 8778 Humboldt Mattole River at Union Mattole Comment
  BLMAR297  Epipactis gigantea Jennifer Anthony-Wheeler 2002-7-23 297 Humboldt Headwaters Forest Reserve, growing in a pond with large floating rafts of logs 426 Comment
  UC725499  Epipactis gigantea A. A. Heller 1923-7-10 13790 Humboldt river between Scotia and Pepperwood; Eel River Comment
  RSA275366  Equisetum hyemale var. affine James Payne Smith, Advanced Plant Taxonomy Class 1971-10-9 4996 Humboldt Mad River above the Fish Hatchery. Comment
  CHSC94942  Equisetum laevigatum K. Lang; J. Lang 2005-3-14 13 Humboldt Trinidad, N. California coast. 51 Comment
  HSC61634  Equisetum laevigatum Ruby Van Deventer 1959-6-20 Humboldt Humboldt-Del Norte county line, Onion Lake 1220 Comment
  CAS-BOT-BC57790  Equisetum telmateia Mrs. A. H. Rodda 1932-5-22 s.n. Humboldt Redwood Highway. Comment
  SEINET181172 Image available Equisetum telmateia Bassett Maguire, R Maguire; C. B. Maguire 1934-6-8 15055 Humboldt Bolling Grove State Park ; Bolling Grove State Park Comment
  CAS-BOT-BC57792  Equisetum telmateia Joseph P. Tracy 1934-6-28 13268 Humboldt By Salmon Creek. 9 Comment
  SEINET5526477 Image available Equisetum telmateia Unknown 1983-6-1 Humboldt Lord Ellis Summit Comment
  HSC881  Equisetum telmateia subsp. braunii C. B. Wolf 1927-8-28 1181 Humboldt On rd. between Eureka and Arcata Comment
  UC526938  Equisetum telmateia subsp. braunii Joseph P. Tracy 1934-6-28 13268 Humboldt by Salmon Creek Northern Coast Ranges 9 Comment
  POM89792  Eragrostis hypnoides Joseph P. Tracy 1920-8-20 5369 Humboldt Klamath River at mouth of Bluff 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
  POM318607  Erechtites minimus Patricia Wilder 1968-8-21 4379 Humboldt Big Lagoon Park, just west of U.S. 101 15 Comment
  JEPS19193  Ericameria greenei Joseph P. Tracy 1919-9-22 5273 Humboldt open places in Shasta fir belt; Trinity Summit 1889 Comment
  CAS-BOT-BC300370  Erigeron eatonii var. plantagineus Thomas W. Nelson; James L. Nelson 1980-6-10 5395 Humboldt North Coast Ranges. Jack Rabbit Valley. Along Swayback Ridge 4-wheel drive road 1 mile south of junction with Forest Service road 1493 Comment
  UC165069  Erigeron foliosus var. confinis Joseph P. Tracy 1911-7-6 3353 Humboldt Mountain slopes along road between Three Creeks and mouth of Willow Creek 762 Comment
  SEINET11859407  Erigeron foliosus var. confinis H. P. Chandler 1901-1 1427 Humboldt North Coast Ranges, Klamath River 244 Comment
  UC468817  Erigeron foliosus var. confinis Joseph Burtt Davy and Walter C. Blasdale Jun 20 1899-Jan 1 1900 5713 Humboldt Hoopa Valley North-Western California, Mendocino Comment
  UC479508  Erigeron foliosus var. mendocinus Marcus E. Jones, A. M. 1931-7-16 29149 Humboldt junction e Arcata Comment
  UC895847  Erigeron foliosus var. mendocinus L. R. Abrams 1916-7-11 6055 Humboldt at mouth of Grizzly Creek (on Van Duzen River); Van Duzen River, Grizzly Creek Comment
  CAS-BOT-BC308849  Erigeron glaucus Doris K. Kildale 1926-6-6 2122 Humboldt Gold Bluffs Comment
  HSC97980  Erigeron klamathensis Cara Witte 2007-7-8 448 Humboldt Board Camp Mountain. Trail 4E28. 1496 Comment
  HSC98524  Erigeron klamathensis Cara Witte 2008-7-30 978 Humboldt National Forest 1. 2 miles north of intersection with Forest Service Road 4N09. 1267 Comment
  UC175167  Erigeron maniopotamicus Joseph P. Tracy 1908-6 2750 Humboldt nw slope Buck Mountain 762 Comment
  CHSC324  Erigeron philadelphicus A. Small 1954-6-7 Humboldt 1/2 mi. s. of Capetown. 60 Comment
  HSC79512  Erigeron philadelphicus Kenneth Clark 1980-6-14 697 Humboldt Shelter Cove; in stream alluvium of N fork of Dead Man's Gulch 198 Comment
  HSC55063  Eriogonum compositum G. L. Clifton, Griswold 1979-7-31 11625 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1719 Comment
  RSA393623  Eriogonum latifolium Charlotte M. Hoak 1931-7-14 s.n. Humboldt Above Eureka. Comment
  UC672911  Eriogonum latifolium Joseph P. Tracy 1938-7-15 16062 Humboldt near bay shore; Bucksport 6 Comment
  UC1198108  Eriogonum luteolum var. luteolum Joseph P. Tracy 1930-8-3 9142 Humboldt along Van Duzen River opposite Buck Mountain; Van Duzen River 762 Comment
  CAS-BOT-BC261724  Eriogonum nudum var. oblongifolium Doris K. Kildale 1926-5-9 1991 Humboldt Kneeland Prairie, Rock Pile 853 Comment
  POM165553  Eriogonum nudum var. oblongifolium Joseph P. Tracy 1918-7-6 5044 Humboldt South Fork of Eel River near the Humboldt-Mendocino County Line 152 Comment
  CAS-BOT-BC269862  Eriogonum nudum var. pubiflorum Doris K. Kildale 1926-6-9 2144 Humboldt Horse Mountain 1219 Comment
  CAS-BOT-BC269865  Eriogonum nudum var. pubiflorum J. H. Thomas 1949-6-13 926 Humboldt Klamath River Valley between Weitchpec and Hoopa Comment
  POM160765  Eriogonum roseum Joseph P. Tracy 1923-9-10 6547 Humboldt Local on sand bar Trinity River Valley, near the South Fork. Comment
Read comments
Aug 15 2009
  CAS-BOT-BC267876  Eriogonum umbellatum Volney Rattan 1878-1-1 s.n. Humboldt Unspecified 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
  SEINET13095713  Eriogonum umbellatum var. nelsoniorum James L. Reveal 2001-7-18 8345 Humboldt Along U.S. Forest Service Road 1 at south end of Whiting Ridge, about 0.5 air miles west-northwest of High Salt Ground and 9.3 air miles west of Hyampom. 1296 Comment
  HSC28146  Eriophyllum lanatum Chris Gist 1971-6-19 36 Humboldt 3 mi. in on Titlow Hill Rd. from California State Hwy. 299, Horse Mtn. Comment
  HSC5605  Eriophyllum lanatum var. achilleoides Lincoln Constance, R. C. Rollins 1942-5-12 2886 Humboldt Mouth of Bluff Creek, 6 miles NE of Weitchpec 152 Comment
  UC582676  Eriophyllum lanatum var. achilleoides Joseph P. Tracy 1935-6-23 13999 Humboldt French Camp Ridge 1066 Comment
  SEINET11850725  Eriophyllum lanatum var. achilleoides J. P. Tracy 1950-1 18790 Humboldt at Jenk's Ranch, 7 mi N of Harris Comment
  UC582675  Eriophyllum lanatum var. lanceolatum Joseph P. Tracy 1933-8-6 12936 Humboldt French Camp Ridge 1066 Comment
  UC275489  Erodium cicutarium Joseph P. Tracy 1925-4-5 6959 Humboldt Lawrence Creek, at crossing of the Kneeland Road Northern Coast Ranges 609 Comment
  HSC57415  Erysimum capitatum var. capitatum G. L. Clifton, Terry Griswold 1979-7-26 10177 Humboldt Near Salmon Mtn., close to the town of Forks of Salmon 2058 Comment
  HSC57666  Erysimum capitatum var. capitatum G. L. Clifton, Terry Griswold 1979-7-25 10849 Humboldt Near Red Cap Lake, close to the town of Forks of Salmon. 1784 Comment
  UCR179237  Erysimum menziesii R. G. Swinney 1968-4-3 240 Humboldt North Coast, Lanphere's Preserve, west of Arcata 15 Comment
  HSC48866  Erysimum perenne Brad Klipfel 1973-6-10 61 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC102051  Erythronium grandiflorum M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-13 955 Humboldt Patterson Meadows 1555 Comment
  HSC48528  Erythronium grandiflorum subsp. grandiflorum Mark Flippo 1978-5-21 60 Humboldt USFS Rd. 8N20 Comment
  JEPS79888  Erythronium oregonum Joseph P. Tracy 1918-5-1 4897 Humboldt Northern Coast Ranges, Kneeland Prairie 762 Comment
  HSC34508  Erythronium oregonum subsp. leucandrum J. D. Ackerman 1975-5-3 437 Humboldt 3.5 mi. E of Chezem Rd. and Hwy. 299 intersection, W of Redwood Creek Comment
Read comments
Mar 11 2013
  UC666963  Erythronium revolutum Joseph P. Tracy 1927-5-15 8064 Humboldt woods at head Pine Creek; Hoopa Mountain 1066 Comment
  CAS-BOT-BC403037  Eschscholzia californica Joseph P. Tracy 1937-7-29 15598 Humboldt South Fork Mountain. West slope near top, at Hyampom Trail 1676 Comment
  HSC98456  Eschscholzia californica D. E. Anderson 1961-9-2 1769 Humboldt 3 mi. S of Cape Mendocino 3 Comment
  CAS-BOT-BC310494  Euchiton sphaericus Joseph P. Tracy 1936-8-23 15162 Humboldt Carlotta 30 Comment
  HSC49682  Euchiton sphaericus J. O. Sawyer 1977-7-1 2990 Humboldt Aikens campground. Comment
  JEPS34035  Euchiton sphaericus W. L. Jepson 1936-8-15 17898 Humboldt 2 mi e Carlotta Comment
  UC562473  Euchiton sphaericus Joseph P. Tracy 1936-8-23 15162 Humboldt Carlotta 30 Comment
  RSA24201  Euonymus occidentalis C. B. Wolf 1941-3-3 9996 Humboldt N. Coast Range, 3.3 miles W of Briceland on the road to Shelter Cove. 152 Comment
  HSC12567  Euphorbia peplus D. La Conte 1970-6-15 6 Humboldt Comment
  UC1198978  Euphorbia spathulata Joseph P. Tracy 1935-5-12 13795 Humboldt Willow Creek; Trinity River Valley 152 Comment
  UC668186  Euphorbia spathulata Joseph P. Tracy 1927-7-4 8226 Humboldt Kneeland Prairie 762 Comment
  CAS-BOT-BC312210  Eurybia radulina Doris K. Kildale 1926-8-22 2588 Humboldt On Orick - Martin's Ferry Road 716 Comment
  HSC100109  Festuca arundinacea T. L. Ackerman 1964-5-15 48 Humboldt Dunes west from Fairhaven sign Comment
  UC34070  Festuca californica J. P. Tracy 1901-6-23 1175 Humboldt immediate vicinity Eureka 0 Comment
  UCD65871  Festuca californica subsp. californica R. Tofsrud 1948-9-1 Humboldt Road junction near summit of Horse Mt. 1463 Comment
  RSA10078  Festuca elmeri Joseph P. Tracy 1927-5-8 7962 Humboldt Phillipsville open oak groves facing South Fork of Eel River. 122 Comment
  UC525641  Festuca elmeri Joseph P. Tracy 1927-5-8 7962 Humboldt facing South Fork of Eel River; Northern Coast Ranges, Phillipsville 121 Comment
  RSA12524  Festuca idahoensis C. B. Wolf 1934-7-3 5912 Humboldt 21 miles from Orick on road to Weitchpec. 152 Comment
  UC570335  Festuca idahoensis H. S. Yates 1936-6-17 5697 Humboldt lower nw slope Buck Mountain; South Fork Pk. 792 Comment
  SEINET200326  Festuca myuros J. P. Tracy 1914-5-14 4432 Humboldt Northern Coast Ranges Fort Seward. 122 Comment
  CAS-BOT-BC278810  Festuca occidentalis W. R. Dudley 1899-6-1 s.n. Humboldt Bull Creek & Eel River Comment
  UCD66125  Festuca occidentalis P. B. Kennedy 1923-8-23 Humboldt Near Orleans, near top of grade - Red Bluff to Arcata. Comment
  BLMAR30  Festuca perennis Brad Barr June, 1982 30 Humboldt King range, Smith cabin Comment
  CAS-BOT-BC278971  Festuca rubra Malcom A. Nobs; S. Galen Smith 1949-8-3 1171 Humboldt Around Fields Landing Comment
  HSC39052  Festuca rubra Linda M. Barker 1976-6-22 1617 Humboldt 3 mi. W of Arcata Comment
  RSA152482  Festuca rubra Joseph P. Tracy 1950-6-17 18838 Humboldt At Eureka. Comment
  UCD66357  Festuca rubra R. Tofsrud 1948-9-1 Humboldt Road junction near summit of Horse Mt. 1463 Comment
  CAS-BOT-BC282522  Festuca subbiflora Harley P. Chandler 1901-5-1 1184 Humboldt Humboldt Bay 30 Comment
  SEINET3827552 Image available Festuca subuliflora T. R. Van Devender, R. K. Van Devender 1990-1 90 -102 Humboldt Cal-Barrel Road in Redwood National Forest; dense old-growth redwood forest. Comment
  HSC55336  Fragaria vesca Griswold, Butler 1979-7-12 7183 Humboldt Near Groves Prairie, close to the town of Willow Creek. 1256 Comment
  UCSB22388  Fragaria vesca Jensen, Karen 1965-4-14 Humboldt Trinidad State Park 15 Comment
  CAS-BOT-BC59960  Frangula purshiana Alice Eastwood 1907-4-21 16 Humboldt Port Trinidad. Comment
  HSC47497  Frangula purshiana Sheila Logan 1978-4-9 22 Humboldt Fieldbrook, 1/2 mi. E of McKinleyville on Murray Rd. 122 Comment
  HSC99392  Frangula purshiana subsp. purshiana K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-6-28 41 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  SBBG4629  Frangula purshiana subsp. purshiana M. J. Cody 1938-7-10 Humboldt near Trinidad Comment
  POM130724  Frasera albicaulis var. nitida H. P. Chandler 1901-06 1486 Humboldt Klamath River. Comment
  CAS-BOT-BC217694  Fraxinus latifolia Joseph P. Tracy 1928-4-22 8414 Humboldt Willow Creek, Trinity River Valley 152 Comment
  HSC39183  Fraxinus latifolia D. E. Anderson, J. P. Smith 1971-6-28 1217 Humboldt Along Mad River, 2 mi. S of Blue Lake. Comment
  HSC104068  Fritillaria affinis S. Carothers 2003-5-17 Humboldt Six Rivers National Forest; Brown's Camp, a little south of the low water crossing at Rd. 6E24 780 Comment
  HSC15540  Fritillaria affinis R. A. Rasp 1964-4-5 31 Humboldt 5 mi. E of Klamath Trinity Junction at Bluff Creek Public Camp Comment
  HSC15530  Fritillaria purdyi Elrid H. Spinas 1948-5-22 Humboldt Horse Mtn. Comment
  UC275325  Fumaria officinalis Joseph P. Tracy 1924-5-17 6679 Humboldt Eureka; Northern Coast Ranges 0 Comment
  HSC19781  Galium aparine B. D. Rogers, William J. Ferlatte 1966-6-8 2087 Humboldt Forest Glen Campground Comment
  HSC70633  Galium bolanderi R. York 1980-5-18 583 Humboldt Near Black Mtn 792 Comment
  HSC70981  Galium bolanderi Gail Newton 1980-7-22 1664 Humboldt Near Devils Backbone 1554 Comment
  JEPS14011  Galium parisiense Roxana S. Ferris 1955-7-11 12972 Humboldt betw. Willow Creek and Blue Lake (summit of US Hwy 299) Comment
  HSC40955  Galium triflorum Linda M. Barker 1976-7-5 1649 Humboldt 3 mi. W of Arcata. Comment
  UC168962  Galium triflorum Joseph P. Tracy 1907-6-20 2570 Humboldt Eureka Northern Coast Region 0 Comment
  JEPS6537  Galium triflorum W. L. Jepson 1902-6 1911 Humboldt Pepperwood Comment
  UC127734  Gamochaeta ustulata Harley P. Chandler May 1901 1139 Humboldt Humboldt Bay North Coast Ranges, Humboldt Bay 3 Comment
  UC562618  Gamochaeta ustulata Joseph P. Tracy 1936-5-29 14830 Humboldt 2 mi n Orick (on Bald Hills road) 152 Comment
  CAS-BOT-BC194526  Garrya elliptica L. R. Abrams; R. Bacigalupi 1922-6-25 8293 Humboldt Bluffs north of Big Lagoon Comment
  HSC8392  Garrya fremontii C. B. Wolf 1930-10-24 1762 Humboldt Along Klamath River 1.0mi above mouth of Slate Creek 244 Comment
  HSC8400  Garrya fremontii D. E. Anderson 1965-4-24 3537 Humboldt Along Titlow Hill Rd. 2 mi. from its junction with Hwy. 299 Comment
  UC1174948  Garrya fremontii P. C. Everett and E. K. Balls 1959-10-24 23952 Humboldt Somesbar to Orleans (2.8 mi sw from Siskiyou-Humboldt County line) 198 Comment
  UC314602  Garrya fremontii Joseph P. Tracy 1925-9-6 7260 Humboldt near Don Juan Point (Trinity River); Northern Coast Ranges 304 Comment
  UC1103735  Gastridium ventricosum Joseph P. Tracy 1934-7-6 13663 Humboldt Iaqua; North Coast Ranges, Iaqua 609 Comment
  UC314635  Gaultheria ovatifolia Joseph P. Tracy 1926-6-27 7670 Humboldt Horse Mountain; Northern Coast Ranges, Horse Mountain 1463 Comment
  HSC22505  Gaultheria shallon J. R. Eichelberger 1964-5-5 68 Humboldt N side of the Mad River at the entrance to Azalea State Reserve Comment
  HSC89436  Gaultheria shallon P. A. Daly 1984-5-13 25 Humboldt Along trail/Rd. at Trinidad Head. 61 Comment
  RSA309623  Gaultheria shallon W. Wisura 1983-9-2 3930 Humboldt 6 mi W of Willow Creek, at East Fork campground, along Hwy. 299 Comment
  UC1197591  Gaultheria shallon Joseph P. Tracy 1911-7-11 3505 Humboldt near Willow Creek (at w side of Trinity River, ridge between Brett's Ranch and Hoopa Valley); Northern Coast Ranges, Trinity River 304 Comment
  UC1541491  Gaultheria shallon Harold E. Parks March 1934 4832 Humboldt Trinidad, Spruce Cove Spruce Cove; Trinidad, Spruce Cove Comment
  UCSB7320  Gaultheria shallon Phillips, Priscilla 1958-6-9 Humboldt Bishop Pine Lodge, 2 mi. N of Trinidad Comment
  SEINET11996979  Gaultheria shallon F. H. Utech, Sato, T.; Ohara, M. 1990-1 90 293 a Humboldt 2.4 mi W of US 101 on CA 169 from Klamath to Klamath Glen along Klamath River 50 Comment
  HSC54658  Gayophytum diffusum subsp. parviflorum Overton, Butler 1979-7-25 9877 Humboldt Near Sims Mtn., close to the town of Willow Creek 1295 Comment
  UC562500  Gayophytum diffusum subsp. parviflorum Joseph P. Tracy 1933-7-26 12919 Humboldt Grouse Mountain North Coast Ranges 1524 Comment
  POM214930  Gayophytum diffusum subsp. parviflorum Joseph P. Tracy 1930-7-16 9069 Humboldt Northern Coast Ranges: South Fork Mountain; openings in fir forest near McKay Camp. 1677 Comment
  POM247151  Gayophytum heterozygum Joseph P. Tracy 1933-8-30 13045 Humboldt North Coast Ranges: Grouse Mountain 1524 Comment
  UC505119  Gayophytum heterozygum Joseph P. Tracy Jul 16 1930-Jul 19 1930 9050 1/2 Humboldt along summit near Blake Lookout; Northern Coast Ranges, South Fork Mountain 1737 Comment
  JEPS27604  Gayophytum humile Joseph P. Tracy 1932-7-11 10424 Humboldt Corral Prairie Klamath Mountains, Trinity Summit 1524 Comment
  HSC15524  Genista monspessulana D. La Conte 1970-8-10 4 Humboldt Comment
  RSA13517  Gentiana newberryi H. E. Parks 1931-07 1052 Humboldt Bishop Pine Lodge, Trinidad. 76 Comment
  HSC57882  Gentiana plurisetosa Walter Overton, Marvin Butler 1979-7-31 11420 Humboldt Near Water Dog Lakes, close to the town of Hoopa 1830 Comment
  JEPS76805  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
  UC179966  Gentiana sceptrum Joseph P. Tracy 1914-9-6 4610 Humboldt between High Prairie and Snow Camp; Northern Coast Ranges, Bald Mountain 1219 Comment
  UC183701  Gentiana sceptrum Joseph P. Tracy 1913-9-9 4404 Humboldt Patrick's Point North Coast Ranges 30 Comment
  HSC8645  Geranium dissectum R. T. Forester 1963-4-30 16 Humboldt 0.25 mi. N of Fairhaven on Samoa Rd. Comment
  UC164809  Geranium molle Joseph P. Tracy 1906-5-6 2436 Humboldt near Hydesville; Northern Coast Region 60 Comment
  HSC44760  Geranium oreganum Maralyn O'Meara 1972-6-8 80 Humboldt Along Bald Hills Rd, 16.4 mi. E of junction with Hwy. 101 Comment
  SEINET196700  Gilia capillaris Joseph P. Tracy 1932-7-10 10374 Humboldt Trinity Summit Corral Prairie in wet meadow 1585 Comment
  HSC16968  Gilia capitata H. D. Sumner 1959-7-14 Humboldt Between Hoopa and Redwood Creek 305 Comment
  UC133647  Gilia capitata subsp. pacifica Joseph P. Tracy 1908-8-1 3068 Humboldt Kneeland Prairie Northern Coast Ranges, Kneeland Prairie 762 Comment
  BLMAR67  Gilia millefoliata Jennifer Anthony-Wheeler 1994-5-18 67 Humboldt Samoa/Manilla, growing throughout dune mat in wetland area Comment
  UC1197895  Gilia sinistra subsp. sinistra Joseph P. Tracy 1930-7-23 9133 Humboldt Horse Mountain Northern Coast Ranges, Horse Mountain 1524 Comment
  HSC100594  Gilia squarrosa Carl C. Marshall Sep 1886 245 Humboldt Fields near Arcata. Comment
  UC169033  Githopsis specularioides J. P. Tracy 1903-5-23 1906 Humboldt Alder Point Eel River 152 Comment
  BLMAR647  Githopsis specularioides Jennifer Wheeler 2011-6-21 647 Humboldt Lacks Creek, Stormy Saddle Prairie 1158 Comment
  CAS-BOT-BC218432  Glehnia littoralis subsp. leiocarpa Milo S. Baker 1927-8-16 2449 a Humboldt Near beach, Samoa Comment
  CAS-BOT-BC218435  Glehnia littoralis subsp. leiocarpa Carl B. Wolf 1937-6-18 8906 Humboldt Centerville Beach 3 Comment
  RSA246750  Glehnia littoralis subsp. leiocarpa R. F. Thorne, P. Everett 1965-8-7 35218 Humboldt Samoa Peninsula. 3 Comment
  UCD127514  Glehnia littoralis subsp. leiocarpa Linda M. Barker 1976-6-22 1626 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  UC183531  Glyceria elata Joseph P. Tracy 1908-6 2770 Humboldt opposite Buck Mountain (Valley of Van Duzen River); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  RSA152380  Glyceria occidentalis Joseph P. Tracy 1939-5-14 16286 Humboldt Dinsmore's along Van Duzen River, opposite Buck Mountain 762 Comment
  JEPS34040  Gnaphalium palustre W. L. Jepson 1936-8-17 17919 a Humboldt 2 mi s of Field's Landing (near Still's Ranch, marsh) Comment
  UC164842  Gnaphalium palustre Joseph P. Tracy 1911-7-7 3383 Humboldt 3 m nw of junction with Trinity River Willow Creek (at meadow on mountainside, near Beebs Ranch); Northern Coast Ranges, , Trinity River 914 Comment
  UC582517  Gnaphalium palustre Joseph P. Tracy 1932-7-13 10513 Humboldt Corral Prairie Trinity Summit, Corral Prairie 1584 Comment
  HSC35784  Gnaphalium palustre Thomas W. Nelson, B. Reinhardt 1975-7-30 2100 Humboldt Road out Whiting Ridge Comment
  HSC5711  Gnaphalium palustre Jerry Parker 1968-9-24 74 Humboldt Mckinleyville beach Comment
  POM174074  Gnaphalium sphaericum Joseph P. Tracy 1918-9-1 5097 Humboldt Newells Camp, around Humboldt Bay. On old Kneeland Prairie Road. 457 Comment
  HSC76552  Goodyera oblongifolia Teresa Prendusi 1981-7-7 126 Humboldt Near Slate Creek Butte. 1158 Comment
  CAS-BOT-BC304739  Grindelia hirsutula Joseph P. Tracy 1939-8-6 16397 Humboldt Shore of Big Lagoon 3 Comment
  CAS-BOT-BC304758  Grindelia hirsutula Carl B. Wolf 1937-9-9 9305 Humboldt Coast, 2 mi. So. of Cape Mendocino 6 Comment
  CAS-BOT-BC304763  Grindelia hirsutula C. L. Hitchcock; J. S. Martin 1939-7-14 5437 Humboldt At Shelter Cove Comment
  UC1541451  Grindelia hirsutula H. E. and S. T. Parks 1930-9-14 773 Humboldt n shore Big Lagoon Comment
  UC665534  Grindelia hirsutula H. E. Parks Aug 1 1941-Sep 1 1941 24201 Humboldt near Arcata Comment
  SEINET10724140  Grindelia hirsutula Harold E. Parks Parks 24190 Humboldt Gravel near water, Big Lagoon. Comment
  SEINET11835894  Grindelia hirsutula var. davyi Unknown 1936-1 13195 Humboldt near Ukiah Comment
  HSC97938  Hackelia californica Cara Witte 2007-5-31 143 Humboldt Off National Forest 1. Near Board Camp Mountain. Approximately 4 miles south of Brays Opening and 1/2 mile west of road. 1510 Comment
  UC525574  Hackelia micrantha Joseph P. Tracy 1932-7-11 10421 Humboldt Corral Prairie; Klamath Mountains, Trinity Summit 1524 Comment
  UC3687  Hastingsia alba H. N. Bolander 1860-1-1 6559 Humboldt Red Mountains Comment
  HSC56436  Helenium bigelovii Griswold, Butler 1979-7-12 7151 Humboldt Near Groves Prairie, close to the town of Willow Creek. 1256 Comment
  UC53952  Helenium bigelovii J. P. Tracy 1901-5-1 1204 Humboldt Humboldt Bay North Coast Ranges, Humboldt Bay 30 Comment
  CAS-BOT-BC306863  Helenium bolanderi Doris K. Kildale 1927-6-26 3592 Humboldt Patrick's Point Comment
  OBI16344  Helenium bolanderi Carl B. Wolf 1937-8-10 9089 Humboldt Big Lagoon, Bog at State Park 6 Comment
  RSA20846  Helenium bolanderi C. B. Wolf 1937-6-18 8886 Humboldt Table Bluff between Humboldt Bay and Eel River. 30 Comment
  RSA695692  Helenium puberulum J. R. Bruff 1937-8-17 943 Humboldt Richardson Grove. Comment
  CAS-BOT-BC305348  Helianthus annuus Henry M. Pollard 1947-9-9 s.n. Humboldt Orleans Comment
  UC204746  Helminthotheca echioides Joseph P. Tracy 1918-7-1 4969 Humboldt southwestern slopes fronting the ocean three mi s of point Cape Mendocino; Northern Coast Ranges, Cape Mendocino 3 Comment
  HSC44129  Hemizonella minima Thomas W. Nelson, Jane P. Nelson 1977-7-4 3608 Humboldt Along road N from Alder Spring 1555 Comment
  HSC48030  Hemizonella minima Brad Klipfel 1974-5-27 405 Humboldt Horse Mtn. Comment
  CAS-BOT-BC310000  Hemizonia congesta subsp. tracyi Alice Eastwood; John Thomas Howell 1937-6-23 4805 Humboldt Little Van Duzen River Comment
  UC1199366  Hemizonia congesta subsp. tracyi Joseph P. Tracy 1940-10-17 16768 Humboldt Camp Grant, Eel River 45 Comment
  RSA126141  Hemizonia tracyi Joseph P. Tracy 1923-7-4 6529 Humboldt Valley of South Yager Creek Comment
  UC180240  Heracleum lanatum Joseph P. Tracy 1914-6-14 4511 Humboldt Carlotta Northern Coast Ranges, Carlotta 60 Comment
  RSA178554  Hesperolinon micranthum Joseph P. Tracy 1950-7-6 18994 Humboldt Buck Mountain: High meadow on west side, 3 miles south of Burr Valley, on the Albee Road. 1159 Comment
  UC162880  Hesperolinon micranthum Joseph P. Tracy 1911-7-4 3290 Humboldt near Willow Creek (hillslopes at w side of river); Northern Coast Ranges, Trinity River 243 Comment
  UC176961  Heterocodon rariflorum Joseph P. Tracy 1912-7-25 3822 Humboldt Kneeland Prairie; Northern Coast Ranges 762 Comment
  SEINET10460607  Heterocodon rariflorum Willis L. Jepson Jepson 16394 Humboldt GARBERVILLE Comment
  SEINET10840490  Heterocodon rariflorum Anderson 1974-6-17 Anderson 5709 Humboldt MCKEOWN RANCH N OF DINSMORE OAK, DOUG FIR WOODLAND. T2N R5E SECS 283334 Comment
  CAS-BOT-BC143656  Heteromeles arbutifolia Doris K. Kildale 1926-6-13 2163 Humboldt Briceland Bridge, 1/2 mile west of Garberville 114 Comment
  RSA50141  Heteromeles arbutifolia E. K. Balls 1949-7-10 13969 Humboldt on way from Somes Bar to Orleans, near Siskiyou County line. 152 Comment
  UC1198757  Heteromeles arbutifolia Joseph T. Gregory 1935-12-21 Humboldt 4 mi n Willow Creek (Trinity River bluffs, at the Meitz Place); Trinity River 121 Comment
  CAS-BOT-BC311058  Heterotheca oregona var. oregona S. K. Harris 1938-8-24 s.n. Humboldt Eel River, near Fernbridge Comment
  UC205160  Heterotheca oregona var. rudis Joseph P. Tracy 1919-9-27 5305 Humboldt near Mouth of Willow Creek (gravel bar of Willow Creek); Northern Coast Ranges, Valley of the Trinity River, Willow C 152 Comment
Read comments
Jul 15 2016
  UC485473  Heterotheca oregona var. rudis unknown Humboldt Chandler, <rest illegible> Klamath River Comment
  HSC33081  Heuchera micrantha Thomas W. Nelson, J. D. Ackerman 1974-5-14 1269 Humboldt Baker Beach, 4 mi. S of Trinidad Comment
  CAS-BOT-BC425003  Heuchera micrantha var. micrantha Huron H. Smith 1911-6-6 3794 Humboldt Little River Jc. Comment
  HSC56128  Heuchera rubescens G. L. Clifton, Griswold 1979-8-1 11931 Humboldt Near Mill Creek Lakes, close to the town of Hoopa. 1692 Comment
  HSC81930  Hieracium albiflorum Thomas W. Nelson, Jane P. Nelson 1979-7-3 4947 Humboldt Along road to Joe Losey property at junction of Kneeland and Maple Creek Rds. 610 Comment
  UC1199466  Hieracium nudicaule Joseph P. Tracy 1929-7-4 8633 Humboldt French Camp Ridge 1066 Comment
  SEINET11847403  Hieracium scouleri H. P. Chandler 1901-1 1489 Humboldt Klamath River, North Coast Ranges 427 Comment
  SBBG88819  Hippuris vulgaris A. Keedy 1988-9-18 10 Humboldt Arcata Salt Water Project, Arcata Comment
  UC198615  Hippuris vulgaris Joseph P. Tracy 1917-5-30 4807 Humboldt near mouth of Little R.; Northern Coast Ranges 6 Comment
  CHSC2150  Holcus lanatus M. Anthony 1960-5-1 Humboldt Comment
  HSC10933  Holcus lanatus Paul Shields 1955-6-10 Humboldt Arcata, Humboldt State University campus. Comment
  HSC27046  Holcus lanatus Brad W. Klipfel 1973-8-24 284 Humboldt Near Hwy. 101 Comment
  HSC45220  Holcus lanatus M. Alcasas 1978-5-27 111 Humboldt On access road to Eel River Sawmills, 0.5 mi. from Hwy. 101 30 Comment
  HSC69584  Holcus lanatus R. Kalal 1980-6-8 1 Humboldt Pump Station #1 14 Comment
  SEINET181175 Image available Holcus lanatus Bassett Maguire, R Maguire; CB Maguire 1934-6-8 15060 Humboldt Coolidge, Redwood Park. Comment
  UC1541516  Holcus lanatus Harold E. Parks May 1933 4303 Humboldt Spruce Cove Trinidad; , Trinidad Comment
  UC963839  Holcus lanatus H. E. Parks and S. T. Parks August, 1943 24260 Humboldt Spruce Cove Trinidad (Trinidad); North Coast Ranges, Spruce Cove 60 Comment
  HSC40499  Holodiscus discolor Thomas W. Nelson, James Nelson 1976-7-26 3043 Humboldt E side of middle peak of Mount Lassic group, Signal Peak 1738 Comment
  HSC58004  Holodiscus discolor G. L. Clifton, Griswold 1979-7-31 11789 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa 1805 Comment
  HSC99588  Holodiscus discolor K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-8-10 253 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  UC418997  Hordeum brachyantherum subsp. brachyantherum Parks and Tracy 1925-6-1 2767 Humboldt coatal plain around Humboldt Bay (Eureka); , Ereka Comment
  RSA10124  Hordeum brachyantherum subsp. californicum Joseph P. Tracy 1933-6-6 12508 Humboldt Trinidad 9 Comment
  JEPS72937  Hordeum marinum subsp. gussoneanum Lincoln Constance 1934-5-29 722 Humboldt Upper Look Prairie Bull Creek Region, South Fork Eel River, Upper Look Prairie (South Fork Eel River, Bull Creek Region) 365 Comment
  UC1103740  Hordeum marinum subsp. gussoneanum Joseph P. Tracy 1901-6-16 1144 Humboldt Eureka Northern Coast Region, Eureka 0 Comment
  UC34063  Hordeum marinum subsp. gussoneanum J. P. Tracy 1901-6-16 1144 Humboldt immediate vicinity Eureka; immediate vicinity Eureka 0 Comment
  UC187307  Hordeum murinum subsp. leporinum Joseph P. Tracy 1911-6-25 3243 Humboldt Eureka Northern Coast Region, Eureka 0 Comment
  HSC63030  Horkelia tridentata var. flavescens J. P. Smith, J. O. Sawyer 1973-5-12 6699 Humboldt 9.6 mi. from Redwood Creek on Hoopa Rd. Comment
  UCSB13143  Hosackia crassifolia Breedlove, Dennis 1961-7-4 Humboldt 2.5 mi. E of the Mad River bridge on U.S. 299 426 Comment
  CHSC68777  Hydrocotyle ranunculoides Vernon Oswald 1997-6-5 8545 Humboldt Robert Gearheart Marsh in the Arcata Marsh and Wildlife Sanctuary. 1 Comment
  HSC64261  Hydrophyllum fendleri var. albifrons J. O. Sawyer, M. A. Ericksen 1979-6-23 3395 Humboldt Slopes below Mill Creek Lakes 1585 Comment
  HSC13555  Hydrophyllum occidentale Elrid H. Spinas 1948-6-16 52 Humboldt Horse Mtn. Comment
  HSC48869  Hydrophyllum occidentale Brad Klipfel 1973-6-10 51 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  JEPS1645  Hydrophyllum occidentale Joseph P. Tracy 1935-7-16 13955 Humboldt lower foothills nw slope Buck Mountain 792 Comment
  UC562600  Hydrophyllum occidentale Joseph P. Tracy 13955 Humboldt lower foothills nw slope Buck Mountain 792 Comment
  JEPS1639  Hydrophyllum tenuipes Joseph P. Tracy 1937-7-25 15538 Humboldt head of Little Hors-Linto Creek; Trinity Summit 1371 Comment
  JEPS1635  Hydrophyllum tenuipes Joseph P. Tracy 1940-5-17 16545 Humboldt flat near McClellan Ranch house; McClellan Mt. 609 Comment
  JEPS1636  Hydrophyllum tenuipes Joseph P. Tracy 1925-6-1 6690 Humboldt Lawrence Creek Northern Coast Ranges (at crossing of the Kneeland Road) 457 Comment
  HSC39621  Hypericum anagalloides Thomas W. Nelson, Jane Nelson 1976-6-15 2724 Humboldt Along old trail from lookout to Blocksburg 1585 Comment
  HSC13822  Hypericum anagalloides D. E. Anderson 1961-9-9 1801 Humboldt Big Lagoon County Park Comment
  HSC91879  Hypericum anagalloides E. Mackey 1987-8-29 Humboldt Patrick's Point State Park, in woods near Palmer's Point Comment
  RSA8307  Hypericum formosum var. scouleri I. L. Wiggins 1932-7-18 5886 Humboldt Boggy meadow between Arcata and Bayside Comment
  CDA30714  Hypericum perforatum M. K. Beyers, I. Shepardson 2009-9-13 250 Humboldt Off the eastern side of State Route 254 (Avenue of the Giants), along the Eel river, on and along a steep-cut bank that has been cemented over here, probably to prevent erosion. 0 Comment
  HSC12005  Hypericum perforatum Wilbur Peterson 1970-10-18 60 Humboldt 200 yards S of Mad River Bridge on Hwy 101 Comment
  HSC41265  Hypericum perforatum Brad Klipfel 1974-7-23 458 Humboldt Horse Mtn. along disturbed ridge rd. E of the towers Comment
  UCD110387  Hypericum perforatum subsp. perforatum J. I. Mallory 1955-9-17 123 Humboldt Three-eights mile north-northwest of headquarters, Cottrell Ranch. 746 Comment
  HSC39792  Hypochaeris glabra Peter Sorensen 1976-7-14 Humboldt N Spit Comment
  RSA170208  Hypochaeris glabra Joseph P. Tracy 1948-5-31 18020 Humboldt Dobbyn Creek; William Perry place. 152 Comment
  CAS-BOT-BC206848  Iliamna latibracteata C. B. Wolf 1937-9-11 9322 Humboldt 3 miles north of Orick on Redwood Highway, Davison's Ranch on Prairie Creek 60 Comment
  HSC98015  Iliamna latibracteata Cara Witte 2007-7-9 455 Humboldt Grouse Mtn.. FS Rd. 4N32. 1/4 mile S of intersection with 5N04 1466 Comment
  HSC102589  Ipomopsis aggregata subsp. aggregata M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-28 1576 Humboldt Slopes above Bret Hole and below trail 6E18, 1.5 km SSW of Trinity Summit. 1778 Comment
  HSC91876  Iris douglasiana E. Mackey 1986-5-13 Humboldt Patrick's Point State Park near Ceremonial Rock Comment
  SEINET4170680  Iris douglasiana Unknown 1934-6-8 Humboldt Bolling Grove State Park. Comment
  JEPS540  Iris douglasiana W. L. Jepson 1932-7-29 16442 Humboldt Weatt 91 Comment
  JEPS17226  Iris macrosiphon Joseph P. Tracy 1927-6-12 8138 Humboldt Horse Mountain; Northern Coast Ranges 1524 Comment
  UC667117  Iris macrosiphon Joseph P. Tracy 1927-6-12 8138 Humboldt Horse Mountain; Northern Coast Ranges 1524 Comment
  UC275564  Iris purdyi Joseph P. Tracy 1924-7-4 6715 Humboldt Snow Camp; Northern Coast Ranges 1371 Comment
  RSA245555  Iris purdyi Larry E. DeBuhr 1973-4-23 983 Humboldt Richardson Grove Redwood State Park. Comment
  JEPS88855  Iris tenax subsp. klamathensis Carol A. Wilson 1992-5-15 92 -ph20 Humboldt just s Orleans (along Icesee Road from where it leaves Hwy 96 to top of hill) Comment
  HSC13903  Iris tenuissima Francis Winter 1960-4-24 Humboldt 7 mi. W of Hoopa Indian Reservation, Bair Rd. 915 Comment
  CAS-BOT-BC88650  Isatis tinctoria Joseph P. Tracy 1939-4-29 16239 Humboldt Klamath River at mouth of Slate Creek. 121 Comment
  CAS-BOT-BC112458  Isolepis cernua W. R. Dudley 1899-6-1 s.n. Humboldt Eureka Peninsula 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
  UC1152116  Juncus ambiguus Joseph P. Tracy 1934-7-2 13283 Humboldt mouth of Little River Little River Comment
  HSC13985  Juncus balticus subsp. ater C. B. Wolf 1927-8-22 772 Humboldt Big Lagoon Comment
  RSA296738  Juncus breweri J. P. Smith, Thomas W. Nelson 1977-6-30 9220 Humboldt Samoa Peninsula just east of the drag strip. Comment
  RSA89765  Juncus breweri Phillip A. Munz 1954-7-25 19877 Humboldt Near dunes at Humboldt Lighthouse south of Samoa. Comment
  POM208990  Juncus bufonius Lincoln Constance 1934-6-12 862 Humboldt S Fork of Eel River, N end of Dyerville bridge, Humboldt Redwood Park. 46 Comment
  UC183775  Juncus covillei var. obtusatus Joseph P. Tracy 1912-7-31 3915 Humboldt near Buck Mountain summit; Northern Coast Ranges 1219 Comment
  HSC97214  Juncus ensifolius M. Mesler 2007-7-15 781 Humboldt Near Grouse Mtn., 0.9 mi. S of NF 1 on FS Rd. 5N04 1582 Comment
  BLMAR312  Juncus ensifolius Jennifer Anthony-Wheeler July, 2002 312 Humboldt South Spit, near trail to salt marsh 6 Comment
  SEINET3879721  Juncus lescurii James P. Smith, Thomas W. Nelson 1977-6-30 9220 Humboldt Samoa Peninsula just east of the drag strip.; 0 Comment
  HSC99530  Juncus mertensianus K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-28 194 Humboldt Near North Trinity Mtn, along trail to Water Dog Lakes, Six Rivers National Forest. 1738 Comment
  HSC102629  Juncus mexicanus M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-29 1614 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1579 Comment
  HSC71742  Juncus oxymeris M. A. Baker 1980-6-26 2422 Humboldt Near Sims Creek 610 Comment
  BLMAR429  Juncus patens Clara Sander 2003-8-5 429 Humboldt Humboldt County, Growing along Hwy101 between bayside cutoff and Samoa exit 8 Comment
  UC1103046  Juncus phaeocephalus Joseph P. Tracy 1921-7-10 5854 Humboldt Big Lagoon Northern Coast Region 6 Comment
  UC183779  Juncus saximontanus Joseph P. Tracy 1912-7-31 3911 Humboldt near Buck Mountain summit; Northern Coast Ranges 1219 Comment
  CAS-BOT-BC235890  Keckiella corymbosa Carl D. Duncan 1920-9-21 333 Humboldt Hoopa Comment
  HSC32539  Keckiella corymbosa Thomas W. Nelson 1973-8-19 1116 Humboldt McKeown Ranch N of Dinsmore Comment
  SD87718  Keckiella corymbosa Frank W. Peirson 1926-7-12 7025 Humboldt Klamath River near Weitchpec Comment
  UC1222788  Keckiella corymbosa Joseph P. Tracy 1950-8-20 19314 Humboldt 1 mi s mouth of Salmon River (along e side of Salmon River); Klamath River Comment
  NY790325  Keckiella lemmonii J. P. Tracy 1929-8-4 8648 Humboldt Ridge between Bull Creek and Mattole River 762.0 Comment
  UC902208  Kickxia elatine Joseph P. Tracy 1946-8-25 17648 Humboldt near mouth of Van Duzen River; Eel River 15 Comment
  RSA273316  Kickxia elatine James Payne Smith 1976-10-30 8997 Humboldt Mad River, east of the Essex Lane exit. Comment
  HSC32341  Koeleria macrantha D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-14 5640 Humboldt Senteney Rock, a large barren Franciscan Rock along Swayback Ridge. Comment
  UC205187  Kyhosia bolanderi Joseph P. Tracy 1919-9-18 5252 Humboldt meadow McKay; Trinity summit 1524 Comment
  CAS-BOT-BC340427  Lactuca saligna Joseph P. Tracy 1946-8-25 17650 Humboldt Eel River, Alton to Fortuna 15 Comment
  UC1239533  Lactuca serriola Joseph P. Tracy 1946-8-25 17650 Humboldt Alton to Fortuna (Eel River); Eel River 15 Comment
  JEPS40365  Lagophylla ramosissima Lincoln Constance 1934-5-29 729 Humboldt Upper Look Prairie South Fork Eel River, Bull Creek Region 365 Comment
  UC127613  Lagophylla ramosissima Harley P. Chandler 1901-6-1 1467 Humboldt Klamath River North Coast Ranges, Klamath River 304 Comment
  CAS-BOT-BC341442  Lagophylla ramosissima H. M. Hall 1924-8-10 12081 Humboldt Van Duzen River, near Carlotta Comment
  HSC69892  Lagophylla ramosissima Thomas W. Nelson, Jane P. Nelson 1977-7-29 3639 Humboldt Beside S.R. 36 at head of Larabee Valley 823 Comment
  UC165752  Lagophylla ramosissima Joseph P. Tracy 1911-7-10 3497 Humboldt along near mouth Willow Creek (tributary Trinity River); Northern Coast Ranges 152 Comment
  UCLA55474  Lamium amplexicaule Joseph P. Tracy 1923-6-10 6261 Humboldt Eureka; Northern Coast Ranges 0 Comment
  CDA5661  Lamium amplexicaule B. F. Kemp 1958-2-7 102 -58 Humboldt E. Boots property, Route 1, Ferndale. 0 Comment
  HSC77913  Landoltia punctata Daniel V. Richards 1980-5-25 101 Humboldt N Clam Beach Pond, E side of Hwy. 101, near Cranell exit. Comment
  UC1223223  Lapsana communis Joseph P. Tracy 1950-8-7 19275 Humboldt 1 mi w of lower end Croghan Hole; Trinity Summit Comment
  POM208992  Lasthenia californica Lincoln Constance 1934-5-23 616 Humboldt Look Prairie, Bull Creek Watershed, Humboldt Redwood Park 366 Comment
  SEINET11811255  Lasthenia chrysostoma J. P. Tracy 1947-1 17752 Humboldt Larrabee Valley 732 Comment
  CAS-BOT-BC94770  Lathyrus angulatus R. C. Wenk; P. Hopkinson; M. Hammond; S. Spiegal 2008-6-6 829 Humboldt Humboldt Redwoods State Park. Look Prairie, 0.5 air miles N of Mattole Road, about 3 air miles W of Highway 101 243 Comment
  CAS-BOT-BC204934  Lathyrus biflorus Kenneth W. Fuller 1998-7-2 s.n. Humboldt Red Mountain Comment
  JEPS55352  Lathyrus glandulosus Lincoln Constance 1934-6-8 837 Humboldt Cow Creek fire-trail, from Bull Creek road, n over the divide, into the headwaters of Bear Creek South Fork Eel River, Bull Creek Region, Bear Creek Comment
  UC162576  Lathyrus jepsonii var. californicus Harley P. Chandler Jun 1910 1507 Humboldt Klamath River North Coast Ranges 426 Comment
  UC709418  Lathyrus lanszwertii var. tracyi Joseph P. Tracy 1941-3-26 16844 Humboldt w of mouth of South Fork of Trinity River 304 Comment
  CHSC859  Lathyrus littoralis M. Anthony 1960-5-14 Humboldt Near Arcata. Comment
  HSC40263  Lathyrus littoralis Linda M. Barker 1976-4-30 1409 Humboldt 3 mi. W of Arcata Comment
  HSC14746  Lathyrus littoralis J. W. Johnson 1962-4-18 1259 Humboldt Between the mouth the Mad River and the Hunt Farm, Samoa Peninsula. Comment
  RSA246792  Lathyrus littoralis Robert F. Thorne, Percy C. Everett, K. Thorne 1965-8-7 35221 Humboldt Samoa Peninsula. 3 Comment
  RSA90281  Lathyrus littoralis F. W. Peirson 1923-7-11 3623 Humboldt 18 miles north of Eureka. Comment
  SEINET955878  Lathyrus littoralis Gordon Leppig, Kai Neander 1998-1 787 Humboldt Big Lagoon State Park. 2 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-BC205040  Lathyrus palustris Milo S. Baker 1931-7-17 5407 Humboldt South side of Big Lagoon near cottages Comment
  RSA246790  Lathyrus palustris R. F. Thorne 1965-8-7 351180 Humboldt Big Lagoon, south end. 2 Comment
  HSC38081  Lathyrus polyphyllus Thomas W. Nelson, James Nelson 1976-5-30 2626 Humboldt McKeown Ranch, N of Dinsmore. Comment
  UC162867  Lathyrus polyphyllus Joseph Burtt Davy and Walter C. Blasdale 1899-6-8 5355 Humboldt Bell Springs to Harris; North Coast Ranges Comment
  HSC14736  Lathyrus tingitanus N. D. Dennis 1965-5-10 63 Humboldt 2nd and T St., Eureka Comment
  CAS-BOT-BC325930  Layia carnosa Joseph P. Tracy 1917-5-30 4796 Humboldt Sand dunes at mouth of Little River. 6 Comment
  UC1565646  Layia carnosa Ken S. Berg 1987-5-30 Humboldt s of mouth of Mattole River; Mattole River Dunes Comment
  UC34742  Layia carnosa C. C. Marshall 1885-1-1 Humboldt Comment
  SEINET3374979 Image available Lemna minor Joseph P. Tracy 1932-8-21 10370 Humboldt Three Cabins Ranch; on E side of Mad River on W slope of Chaparral Mt. 457 Comment
  UC175386  Leontodon saxatilis subsp. saxatilis J. P. Tracy 1909-7-4 3008 Humboldt immediate vicinity Eureka 0 Comment
  UC1199161  Lepidium virginicum Joseph P. Tracy 1916-5-31 4690 Humboldt Holmes Flat, along Eel River from South Fork to Scotia Northern Coast Ranges, Eel River 60 Comment
  HSC17097  Leptosiphon androsaceus William J. Ferlatte, B. D. Rogers 1966-6-15 2104 Humboldt Larabee Valley 762 Comment
  HSC45056  Leptosiphon androsaceus R. Sutherland 1978-4-23 34 .23478 Humboldt 558 Comment
  CAS-BOT-BC341829  Lessingia nemaclada Harley P. Chandler 1901-6-1 1503 Humboldt North Coast Ranges. Klamath River 426 Comment
  UC1115822  Lessingia nemaclada Joseph P. Tracy 1939-9-4 16476 Humboldt opposite Buck Mountain (Dinsmores); Valley of Van Duzen River 762 Comment
  CAS-BOT-BC334617  Leucanthemum vulgare Joseph P. Tracy 1937-6-23 15360 Humboldt Along Mad River near Blue Lake 15 Comment
  HSC3105  Leucojum aestivum J. C. Reppas 1963-2-22 20 Humboldt 820 Fickle Hill Rd. Comment
  POM266015  Lewisia cotyledon var. howellii Lincoln Constance, Reed C. Rollins 1942-5-12 s.n. Humboldt Mouth of Bluff Creek, 6 miles NE of Weitchpec. 152 Comment
  UCR70876  Lewisia cotyledon var. howellii Lincoln Constance, R. C. Rollins 1942-5-12 2885 Humboldt MOuth of Bluff Creek, 6 mi NE of Weitchpec 152 Comment
  CAS-BOT-BC283512  Leymus X vancouverensis Joseph P. Tracy 1927-6-26 8214 Humboldt Stone Lagoon 6 Comment
  CAS-BOT-BC283515  Leymus X vancouverensis Malcom A. Nobs; S. Galen Smith 1949-8-3 1204 Humboldt Salt marshes bordering Humboldt Bay, ca 2 miles N of Eureka Comment
  UC526793  Leymus X vancouverensis Joseph P. Tracy 1927-6-26 8214 Humboldt Stone Lagoon Northern Coast Region 6 Comment
  UC1103208  Leymus triticoides Joseph P. Tracy 1929-7-21 8645 Humboldt Willow Creek Northern Coast Ranges, Trinity River Valley 152 Comment
  HSC99522  Ligusticum apiifolium K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-22 185 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  POM160825A  Ligusticum apiifolium Joseph P. Tracy 1924-8-17 6820 Humboldt Trinidad 61 Comment
  CAS-BOT-BC436497  Ligusticum apiifolium Alice Eastwood; John Thomas Howell 1937-6-26 5073 Humboldt Near Berry Summit Comment
  UC183660  Ligusticum apiifolium Joseph P. Tracy 1912-8-3 3970 Humboldt opposite Buck Mt. (Dinsmore's Ranch, Van Duzen R. Valley); Northern Coast Ranges, Van Duzen R. Valley, Dinsmore's Ranch 762 Comment
  HSC74226  Ligusticum californicum M. A. Baker 1980-7-19 3021 Humboldt Near Bret Hole. 1814 Comment
  HSC13238  Ligustrum ovalifolium Jana Kattenhorn 1970-10-24 105 Humboldt HSC Campus, S of building 37 Comment
  UC672870  Lilaea scilloides Joseph P. Tracy 1933-5-20 12274 Humboldt back of Cape Mendocino (Cape Ridge); Cape Ridge 304 Comment
  HSC76429  Lilium kelleyanum Denis Kearns 1981-7-23 396 Humboldt Near Whiteys Peak. 1524 Comment
  UC1334273  Lilium kelloggii Albert M. Vollmer and Ira L. Wiggins 1940-7-4 6 Humboldt 15 mi. w. Weitchpec (on burned-over ridge on Orick-Weitchpec rd.) 944 Comment
  HSC33664  Lilium occidentale Doris K. Niles, Thomas W. Nelson 1974-6-20 Humboldt Wiggins Ranch, W of garbage dump Comment
  HSC33662  Lilium occidentale Doris K. Niles, Thomas W. Nelson 1975-6-30 Humboldt Wiggens Ranch, W of garbage dump Comment
  SEINET12050872  Lilium occidentale F. H. Utech 1977-1 Humboldt Comment
  UC201617  Lilium pardalinum Joseph P. Tracy 1918-7-5 5003 Humboldt White Thorne Valley Northern Coast Ranges, Mattole River (banks of Mattole River) 304 Comment
  UC666950  Lilium pardalinum Joseph P. Tracy 1938-7-4 15994 Humboldt Valley of South Yager Creek 762 Comment
  HSC58247  Lilium pardalinum subsp. pardalinum G. L. Clifton, Griswold 1979-8-2 12426 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 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
  HSC98082  Lilium pardalinum subsp. vollmeri Cara Witte 2007-7-3 418 Humboldt Horse Mountain Botanical Area. Forest Service Road 6N38. 1/2 mile east from intersection with National Forest 1. 1397 Comment
  UC1198251  Lilium rubescens Joseph P. Tracy 1908-6 2864 Humboldt opposite Buck Mountain; Northern Coast Ranges, Valley of Van Duzen River 304 Comment
  CAS-BOT-BC133014  Lilium washingtonianum subsp. purpurascens 1901-7-24 s.n. Humboldt Near Arcata Comment
  RSA12530  Lilium washingtonianum subsp. purpurascens Carl B. Wolf 1934-7-2 5908 Humboldt 7 miles from Bald Mountain on road to Snow Camp (mountains east of Korbel) 1067 Comment
  UC1197416  Limnanthes douglasii Joseph P. Tracy 1940-5-5 16542 Humboldt Garberville 152 Comment
  UC668277  Limnanthes douglasii subsp. douglasii Joseph P. Tracy 1933-5-20 12271 Humboldt Bear River Ridge Northern Coast Ranges 609 Comment
  HSC69869  Limnanthes douglasii subsp. nivea Thomas W. Nelson 1978-5-28 4098 Humboldt McKeown Ranch, N of Dinsmore 762 Comment
  UC1184177  Limnanthes douglasii subsp. nivea Robert Ornduff 1960-6-1 6178 Humboldt about 3 mi e Garberville (on road to Alder Point) Comment
  SEINET3818260  Limnorchis leucostachys Unknown 1942-1 Humboldt Comment
  UC741169  Limonium californicum C. C. and S. K. Harris 1939-9-8 973 Humboldt Humboldt Bay; s shore, salt marsh Comment
  UC127602  Linanthus filipes J. Burtt Davy 1899-6-20 Humboldt Hoopa Valley Comment
  SBBG66372  Linaria vulgaris S. W. Hutchinson -Jun-1925 Humboldt beyond Eureka Comment
  HSC34281  Linnaea borealis subsp. longiflora K. Irwin 1975-8-16 Humboldt Grogans Hole area. Comment
  HSC3907  Linnaea borealis subsp. longiflora William J. Ferlatte, B. D. Rogers 1966-6-8 2088 Humboldt 2 mi. W of Forest Glen, Granite Canyon. Comment
  UC1442907  Listera cordata Theodore F. Niehaus 1970-4-14 914 Humboldt ca. 5 mi w Yager-Bridgeville road (on Redwood House road) Comment
  HSC16643  Listera cordata var. nephrophylla J. F. Knezevich 1968-5-21 449 Humboldt 20 mi. E of Arcata on Hwy. 299 at Lord Ellis Summit Comment
  JEPS38042  Lithocarpus densiflorus Lincoln Constance 1934-5-24 637 Humboldt forest bordering on e side Lower Look Prairie; South Fork Eel River, Bull Creek Region 121 Comment
  SACT002876  Lithocarpus densiflorus C. White 1962-5-13 Humboldt Redwood forest along HIghway 299, 16 miles east of Arcata, ca. Comment
  UC535731  Lithocarpus densiflorus Eleanor Armstrong 1934-8-23 1188 Humboldt Richardson Grove Comment
  RSA247208  Lithocarpus densiflorus var. densiflorus Gary D. Wallace 1971-7-28 946 Humboldt Along King Range Co. Rd. ca. 4 mi SE of Shelter Cove. Comment
  RSA44461  Lithocarpus densiflorus var. densiflorus H. M. Pollard 1948-8-4 s.n. Humboldt Orleans Mt. Trail. 762 Comment
  HSC20213  Lithophragma affine Elrid H. Spinas 1948-6-16 49 Humboldt Horse Mtn. Comment
  CAS-BOT-BC283400  Lolium multiflorum Henry M. Pollard 1948-7-27 s.n. Humboldt Road to Red Cap Creek near Orleans Comment
  UC50505  Lolium multiflorum Joseph Burtt Davy and Walter C. Blasdale 1899-7-30 6212 Humboldt Russ Ranch; North-Western California Comment
  HSC10312  Lolium perenne N. R. Waite 1965-5-19 43 Humboldt W edge of Humboldt State University campus. Comment
  UC50698  Lolium temulentum Joseph Burtt Davy 1899-6-20 5690 Humboldt Hupa Valley Comment
  HSC71827  Lomatium ciliolatum var. ciliolatum Thomas W. Nelson, Jane P. Nelson 1980-6-27 5939 Humboldt Along old trail to pond above Alder Spring, 0.5 mi. N of campground 1555 Comment
  UC162334  Lomatium dasycarpum subsp. dasycarpum Joseph P. Tracy 1911-7-6 3345 Humboldt along rd. between Three Creeks and mouth of Willow Creek; Northern Coast Ranges 762 Comment
  HSC97413  Lomatium macrocarpum Griswold, Butler 1979-7-10 6230 Humboldt Near Kinsey Ridge, close to the town of Willow Creek 1244 Comment
  HSC33054  Lomatium macrocarpum Thomas W. Nelson 1974-5-7 1233 Humboldt Beside airstrip at Kneeland Prairie Comment
  JEPS81116  Lomatium macrocarpum D. H. Norris 1970-5-20 12179 Humboldt crest of ridge on Big Hill Rd. e. of Hoopa Comment
  RSA12522  Lomatium macrocarpum C. B. Wolf 1934-7-3 5914 Humboldt 21 mi. from Orick on Weitchpec Rd. Comment
  CDA38337  Lomatium nudicaule Kaylea Eickhoff, Cara M. Witte 2005-6-3 1 Humboldt White Oak Opening, 19.3 miles south of Hwy. 299 on NF1. Comment
  HSC96232  Lomatium nudicaule Kaylea Eickhoff, Cara M. Witte 2005-6-3 1 Humboldt 19.3 mi. S of Hwy. 299 on NF1 1240 Comment
  HSC99456  Lonicera conjugialis K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-7 108 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
  UC441279  Lonicera conjugialis Joseph Burtt Davy and Walter C. Blasdale 1899-6-21 5861 Humboldt Trinity Summit Comment
  SD39856  Lonicera involucrata Edith A. Purer 1932-7-27 4145 Humboldt Near Arcata Comment
  CAS-BOT-BC241480  Lonicera involucrata var. ledebourii Carl B. Wolf 1927-8-29 1204 Humboldt Near mouth of Bear River, Capetown Comment
  HSC3921  Lonicera involucrata var. ledebourii J. E. Lankila 1962-5-6 3 Humboldt W bank of Eel River across form Shively about 500 feet from Bear Creek N Comment
  HSC77902  Lonicera involucrata var. ledebourii L. P. Janeway 1984-5-16 797 Humboldt N Spit of Humboldt Bay, on the W side of Samoa Road ca. 1/4 mi. N of the boat ramp. 5 Comment
  HSC83836  Lonicera involucrata var. ledebourii F. R. Fosberg 1948-8-28 30053 Humboldt Dry Lagoon. Comment
  HSC89435  Lonicera involucrata var. ledebourii P. A. Daly 1984-5-13 24 Humboldt Along trail/Rd. at Trinidad Head. 61 Comment
  HSC97445  Lonicera involucrata var. ledebourii Ivy Watson 2008-10-11 57 Humboldt Near Mad River mouth, S bank, just above high tide line. Comment
  OBI6309  Lonicera involucrata var. ledebourii Joseph P. Tracy 1943-3-21 17413 Humboldt North Coast ranges Comment
  CAS-BOT-BC200916  Lotus Doris K. Kildale 1925-5-25 6040 Humboldt Eureka, Pines Pasture Comment
  UC33554  Lotus aboriginus Chesnut and Drew 1888-7-8 Humboldt Arcata Comment
  SEINET12154182  Lotus aboriginus J. P. Tracy 1933-1 12375 Humboldt 1miW of Gasquet along the Smith River at the Hwy bridge Comment
  HSC104448  Lotus corniculatus Jeff Barrett, Keleigh Deitsch, Tessa Purdy 2014-4-13 1 Humboldt Samoa Peninsula, Fairhaven, along south side of Bay Street 5 Comment
  HSC48615  Lotus corniculatus Mark Flippo 1978-5-23 68 Humboldt Mckinleyville, Bella Vista Rd. Comment
  HSC98811  Lotus crassifolius var. crassifolius Cara Witte 2008-6-18 747 Humboldt Horse Mountain Botanical Area. Approximately 1 mile east of junction 6N36 and 6N36A. 1394 Comment
  UC1052840  Lotus crassifolius var. crassifolius W. L. Colwell 1955-6-7 24 Humboldt 3 mi w Weott (0.5 mi n of Grasshopper Mountain Lookout, Quad. 29-B-3) 914 Comment
  UC162838  Lotus denticulatus Joseph P. Tracy 1908-6 2756 Humboldt opposite Buck Mountain; Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  JEPS55462  Lotus denticulatus W. L. Jepson 1902-6-19 1882 Humboldt Harris to Ft. Seward Ranch Ridge (= Mail Ridge) 1066 Comment
  UC1223407  Lotus denticulatus Joseph P. Tracy 1933-7-9 12655 Humboldt near Willow Creek (on Trinity Highway) 304 Comment
  UC1223432  Lotus denticulatus Joseph P. Tracy 1950-7-6 18998 Humboldt 2 mi s Burr Valley (on the Albee Road) 1158 Comment
  UC1197316  Lotus formosissimus Joseph P. Tracy 1927-4-24 7945 Humboldt near Fortuna; Northern Coast Ranges 60 Comment
  HSC71602  Lotus humistratus M. A. Baker 1980-6-26 2417 Humboldt Near Sims Creek 610 Comment
  UC1223430  Lotus micranthus Joseph P. Tracy 1936-5-30 14839 Humboldt Samoa Sand Dunes Comment
  UC162848  Lotus nevadensis var. nevadensis Joseph P. Tracy 1908-6 2913 Humboldt nw slope Buck Mountain; Northern Coast Ranges 1219 Comment
  UC169043  Lotus oblongifolius var. oblongifolius Joseph P. Tracy 1912-7-31 3902 Humboldt sw slope Buck Mountain; Northern Coast Ranges, Burr Valley 1066 Comment
  UC170028  Lotus purshianus var. purshianus Joseph P. Tracy 1912-8-3 3964 Humboldt opposite Buck Mountain; Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  HSC48061  Lotus strigosus Thomas W. Nelson 1978-4-23 3887 Humboldt Junction of Copher and Samoa Rds., N of Samoa Comment
  UCD106706  Lotus uliginosus R. Tofsrud 1947-6-29 s.n. Humboldt Near Loleta. Comment
  HSC57056  Lotus unifoliolatus var. unifoliolatus Overton, Butler 1979-7-24 9714 Humboldt Near Black Rock, close to the town of Willow Creek. 1554 Comment
  UC1223280  Lupinus adsurgens Joseph P. Tracy 1950-6-18 18849 Humboldt Wilder Ridge Comment
  UC503010  Lupinus affinis Joseph P. Tracy 1932-5-1 9877 Humboldt vicinity Garberville; Northern Coast Ranges, vicinity of Garberville 121 Comment
  RSA167379  Lupinus albicaulis var. shastensis Joseph P. Tracy 1949-8-7 18433 Humboldt On road from Hoopa to Box Camp at summit of ridge near where the road to Big Hill turns off. Comment
  SD39023  Lupinus arboreus Edith A. Purer 1932-7-27 4150 Humboldt Samoa, stabilized sand dunes Comment
  UC1716061  Lupinus arboreus M. S. Taylor 1990-8-22 6070 Humboldt Samoa Recreation Area, Samoa Peninsula, Staging Area Eureka Comment
  UCSB23856  Lupinus arboreus Haller, John 1967-6-17 Humboldt At Clam Beach County Park; U.S. Highway 101, about 10 miles north of Arcata Comment
  HSC47063  Lupinus bicolor J. P. Smith, Thomas W. Nelson 1977-6-30 9198 Humboldt Samoa Peninsula just E of the drag strip. Comment
  HSC73959  Lupinus bicolor Gail Newton 1980-6-7 131 Humboldt Near Brush Mtn. 1128 Comment
  UC503008  Lupinus bicolor Joseph P. Tracy 1932-5-1 9890 Humboldt vicinity Garberville; Northern Coast Ranges, vicin of Garberville 121 Comment
  JEPS82142  Lupinus constancei Thomas W. Nelson and Jane P. Nelson 1982-7-9 7079 Humboldt Mt. Lassic (Signal Peak) and saddle to e North Coast Ranges, Blockburg Quad., Mt. Lassic (Signal Peak; Blocksburg Quadrangle on Mt. Lassic (Signal Peak), Humboldt Co. 1767 Comment
  UC659303  Lupinus elmeri Charles Piper Smith 1929-7-12 4406 Humboldt So<uth> Fork Mtn. Blake Lookout, South Fork Mtn.; Trinity N.F., So<uth> Fork Mountain Comment
  UC1223282  Lupinus formosus Joseph P. Tracy 1941-9-1 16997 Humboldt Blue Lake Comment
  HSC61195  Lupinus latifolius Jimerson, J. Pageau 1979-5-24 475 Humboldt Near Orleans 226 Comment
  POM276514  Lupinus latifolius subsp. latifolius Lyman D. Benson 1929-7-19 1867 Humboldt Road to Matole River above Bull Creek. Comment
  JEPS48707  Lupinus latifolius var. latifolius Hilda W. Grinnell 1932-7-19 27 Humboldt eastern slope of So. Fork Mt. South Fork Mt.; eastern slope of So. Fork Mt. 1615 Comment
  UC176599  Lupinus latifolius var. latifolius Joseph P. Tracy 1913-6-20 4240 Humboldt lower foothills on its nw slope Buck Mountain; Northern Coast Ranges, lower foothills Buck Mountain 762 Comment
  SEINET10488741  Lupinus littoralis Joseph W. Congdon 1904-7-23 Congdon s.n. Humboldt peninsula, eureka. Comment
  UC198577  Lupinus littoralis Joseph P. Tracy 1917-5-26 4785 A Humboldt Bucksport Northern Coast Ranges, , Bucksport (Eureka) 0 Comment
  UC33564  Lupinus luteolus Chestnut and Drew 1888-7-11 Humboldt Jarmyan's Comment
  SJSU10768  Lupinus nanus R. D. Spadoni 1965-5-1 95 Humboldt c. 20 mi SE of Bridgeville on State Rte 36 Comment
  UC302327  Lupinus nanus Joseph P. Tracy 1925-5-31 7053 Humboldt Bridgeville 228 Comment
  SEINET10488870  Lupinus rivularis Donald E. Bright 1962-6-12 Bright 281 Humboldt Redwood and douglas fir woods, bald hill road, 5 mi e of orick. Comment
  SEINET11790125  Luzula comosa J. P. Tracy 1951-1 19546 Humboldt Snow Camp Meadow Comment
  CHSC117678  Luzula macrantha Peter F. Zika 2011-7-3 25500 Humboldt Titlow Hill Road, near junction with Forest Road 6N36, 1 air mile S of Horse Mountain, Outer North Coast Ranges. 1410 Comment
  HSC56397  Luzula parviflora Griswold, Butler 1979-7-11 6967 Humboldt Near Snow Camp Mtn., close to the town of Willow Creek. 1320 Comment
  HSC64191  Luzula parviflora J. O. Sawyer, M. A. Ericksen 1979-6-23 3377 Humboldt Slopes below Mill Creek Lakes 1585 Comment
  RSA69739  Luzula parviflora F. W. Peirson 1923-7-11 3673 Humboldt About 3 miles north of Orick. Comment
  HSC102061  Luzula parviflora subsp. parviflora M. R. Mesler, Robin Bencie, K. A. Wayman 2011-7-12 1162 Humboldt Patterson Meadows 1566 Comment
  CAS-BOT-BC61936  Lycopodium clavatum Mrs. L. B. Kildale 1930-11-1 10755 Humboldt one mile north of Crannell, on trail to Camp 20 Comment
  JEPS63270  Lycopus uniflorus Joseph P. Tracy 1925-10-18 7284 Humboldt Big Lagoon Northern Coast Region, Big Lagoon 6 Comment
  JEPS431  Lysichiton americanus W. L. Jepson 1936-8-17 17916 Humboldt 2 mi. s. Field's Landing (near Still's ranch) Comment
  SEINET11770339  Lysichiton americanus F. H. Utech 1986-1 86 -416 Humboldt between Capetown & Ferndale along Mattole Creek, SW slope of Bear River Ridge 100 Comment
  HSC12034  Lythrum hyssopifolia D. Santana 1970-10-28 82 Humboldt 3 mi. S of Trindad. Comment
  HSC49359  Lythrum hyssopifolia R. York 1979-5-18 302 Humboldt Along railroad tracks near the Arcata Redwood office along Hwy. 101 between Arcata and Eureka. Comment
  RSA0015873  Lythrum hyssopifolia Lyman Benson 1927-7-11 61 Humboldt Weott Ranger Station. Seaward N Coast range, South Fork Eel River. 61 Comment
  CAS-BOT-BC334475  Madia Robert F. Thorne; P. Everett 1965-8-7 35216 b Humboldt Samoa Peninsula, elev near sea level. 0 Comment
  SEINET10473462  Madia Mary Susan Taylor 1990-8-22 Taylor 6074 Humboldt Samoa Recreation Area on Samoa Peninsula, Staging Area, Eureka. Coastal scrub in ORV area. Comment
  HSC38486  Madia elegans D. E. Anderson, J. P. Smith 1971-6-18 - 1066 Humboldt Chezem Rd., about 3 mi. E of bridge over Redwood Creek Comment
  CAS-BOT-BC342799  Madia elegans Richard Snow 1957-8-31 306 Humboldt 4 miles north of Garberville at Dean Creek Lodge Comment
  HSC96257  Madia elegans J. McIntire, S. Lyon 2005-6-10 9 Humboldt 1.7 mi. S of Hwy. 299 on Titlow Hill Rd. 1006 Comment
  UC89451  Madia elegans unknown Humboldt Jarnigans Comment
  POM265905  Madia elegans subsp. vernalis Lincoln Constance, Reed C. Rollins 1942-5-11 2874 Humboldt Hoopa Valley, 5 miles south of Hoopa. 122 Comment
  HSC54202  Madia exigua Griswold, Butler 1979-7-12 7242 Humboldt Near Cedar Creek, close to the town of Willow Creek 1158 Comment
  UC166102  Madia exigua J. P. Tracy 1901-6-30 1208 Humboldt immediate vicinity Eureka 0 Comment
  CAS-BOT-BC344359  Madia exigua Doris K. Kildale 1927-6-25 3575 Humboldt Fearren's Ranch between Thorn & Shelter Cove Comment
  RSA2932  Mahonia nervosa C. B. Wolf 1931-8-29 1243 Humboldt Near summit of Orick Hill on road to Weitchpec. 304 Comment
  CHSC23305  Maianthemum dilatatum Robert F. Thorne; P. Everett 1965-8-7 Humboldt Big Lagoon. 1 Comment
  CAS-BOT-BC508513  Maianthemum dilatatum Ira L. Wiggins 1957-6-19 14131 Humboldt Trinidad Comment
  HSC22509  Maianthemum dilatatum Joel W. Reinhard 1966-4-30 28 Humboldt Two beaches N of College Cove Comment
  UCD161450  Maianthemum dilatatum K. Esau 1934-5-8 s.n. Humboldt Redwood Highway near Scotia. Comment
  HSC49030  Maianthemum racemosum subsp. amplexicaule Patricia Shesgreen 1978-5-5 62 Humboldt 5.1 mi. S of Ferndale on Mattole Rd. Comment
  HSC58049  Maianthemum racemosum subsp. amplexicaule G. L. Clifton 1979-8-1 11908 Humboldt Near Mill Creek Lakes, close to the town of Hoopa. 1692 Comment
  HSC76425  Maianthemum racemosum subsp. amplexicaule Teresa Prendusi 1981-7-9 246 Humboldt Near Slate Creek Butte 1122 Comment
  CHSC85575  Maianthemum stellatum L. P. Janeway 2003-7-30 7939 Humboldt High North Coast Ranges. Cold Spring; 0.6 km north of the top of Titlow Hill. 1454 Comment
  UC565510  Malacothrix floccifera H. L. Mason 1928-7-14 4906 Humboldt near Garberville; East Fork of Eel River Comment
  UC1223205  Malacothrix floccifera Joseph P. Tracy 1950-6-15 18784 Humboldt 7 mi n Harris (Jenk's Ranch) Comment
  UC1198759  Malus fusca J. P. Tracy 1901-5-12 1090 Humboldt immediate vicinity Eureka 0 Comment
  UC18729  Malva nicaeensis C. C. Marshall 1888-1 Humboldt in Humboldt County Humboldt County Comment
  RSA239725  Marah oregana Larry E. DeBuhr, Gary D. Wallace 1973-5-19 1116 Humboldt Prairie Creek Redwood State Park; along Gold Bluff Beach. Comment
  UC1199281  Matricaria discoidea Joseph P. Tracy 1913-6-22 4265 Humboldt opposite Buck Mountain (Dinsmore's Ranch); Northern Coast Ranges, Valley of the Van Duzen River 762 Comment
  HSC14987  Medicago lupulina J. E. Lankilla 1962-5-14 29 Humboldt West bank of river 1/2 mi. S of Fernbridge Comment
  HSC14972  Medicago polymorpha Francis Winter 1960-4-23 Humboldt 4 mi. N of Dollar Ranch, on Korbel-Maple Creek Rd. 244 Comment
  CAS-BOT-BC271172  Melica aristata Henry M. Pollard 1946-8-28 s.n. Humboldt Near summit of Orleans Mt. 1828 Comment
  UC1145134  Melica aristata Joseph P. Tracy 1949-7-19 18374 Humboldt Friday Camp Grouse Mountain (Grouse Mountain) 1219 Comment
  POM126121  Melica harfordii Joseph P. Tracy 1923-5-30 6243 Humboldt Dyerville, along Eel River from South Fork to Scotia. 61 Comment
  HSC74687  Melica subulata Gail Newton 1981-8-7 2441 Humboldt Near Bug Creek. 1042 Comment
  UC1103161  Melica subulata H. E. Parks and Joseph P. Tracy 1934-6-27 11075 Humboldt Grouse Mt. 1432 Comment
  UCD88599  Melica subulata A. A. Beetle; G. L. Stebbins Jr. with J. P. Tracy 1942-6-2 3475 Humboldt 4 miles north of Bridgeville. Comment
  BLMAR755  Melica subulata Jennifer Wheeler 2004-4-30 755 Humboldt King Range, Along Telegraph Ridge 670 Comment
  HSC71635  Melilotus albus J. P. Smith 1973-5-26 6875 Humboldt Scotia Bluffs along the Eel River near Rio Dell Comment
  RSA46823  Melilotus albus Doris K. Kildale 1926-4-9 1739 Humboldt Samoa Road Comment
  HSC15015  Melilotus indicus W. F. Nickel 1965-5-16 Humboldt N Arcata in front of the College Cleaners Comment
  UC577381  Mentha pulegium Joseph P. Tracy 1934-7-9 13339 Humboldt Harris 609 Comment
  HSC37417  Menziesia ferruginea Gary S. Lester, Roger L. Yearout, Judith G. Dickson 1974-7-24 516 Humboldt Along Lost Man Creek. 38 Comment
  HSC7850  Menziesia ferruginea subsp. ferruginea F. Morrell 1949-4-22 11 Humboldt Back Humboldt State University fish hatchery Comment
  UC204745  Microseris laciniata subsp. laciniata Joseph P. Tracy 1918-7-3 4997 Humboldt Shelter Cove Northern Coast Ranges, Shelter Cove 15 Comment
  UC175982  Microseris laciniata subsp. leptosepala Joseph P. Tracy 1911-7-7 3402 Humboldt three mi nw of junction of Willow Creek with Trinity River (near Beebe's Ranch); Northern Coast Ranges 914 Comment
  UC582731  Microseris nutans Joseph P. Tracy 1932-7-11 10417 Humboldt Corral Prairie Trinity Summit 1584 Comment
  HSC98700  Mimulus alsinoides Cara Witte 2007-5-22 82 Humboldt Cold Spring. 1/2 mile south of Titlow Hill. 1392 Comment
  JEPS1744  Mimulus alsinoides Clyde Ritchie Bell 1951-4-21 1045 Humboldt 7 mi s Hoopa Comment
  UC1103331  Mimulus alsinoides Joseph P. Tracy 1925-4-5 6954 1/2 Humboldt Lawrence Creek slope Kneeland Prairie 762 Comment
  HSC22023  Mimulus aurantiacus var. aurantiacus Thomas W. Nelson 1970-10-17 239 Humboldt Mouth of Prairie Creek Comment
  HSC79496  Mimulus aurantiacus var. aurantiacus Kenneth Clark 1979-7-1 452 Humboldt Dead Man's Gulch and throughout Shelter Cove 15 Comment
  UC169016  Mimulus aurantiacus var. aurantiacus Harley P. Chandler 1901-5-22 1240 Humboldt near Nance's; North Coast Ranges, Mad River 91 Comment
  HSC45433  Mimulus breweri Thomas W. Nelson, Jane P. Nelson 1978-7-2 4389 Humboldt SE of E peak of the Mount Lassic group 1616 Comment
  UC1196775  Mimulus cardinalis Joseph P. Tracy 1908-6 2928 Humboldt opposite Buck Mountain; Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  HSC42348  Mimulus cardinalis K. Irwin 1977-8-2 Humboldt Mad River at the Fish Hatchery, ca. 2 mi. S of Blue Lake Comment
  POM87667  Mimulus dentatus L. R. Abrams, R. C. Bacigalupi 1922-6-25 8279 Humboldt Big Lagoon, south of Orick. Comment
  SEINET12269811  Mimulus dentatus Unknown 1936-1 13277 Humboldt near Trinidad Comment
  UC582601  Mimulus douglasii Joseph P. Tracy 1925-5-24 7012 Humboldt Kneeland Prairie 762 Comment
  HSC31446  Mimulus guttatus D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-13 5563 Humboldt Westward lower slopes of Black Lassic near Trinity Co. line. 1585 Comment
  JEPS86884  Mimulus guttatus David M. Thompson 1986-3-26 856 Humboldt 100 ft s Siskiyou Co. line (along Hwy 96, Somes Bar, at confluence of rivers); Klamath River, Salmon River 61 Comment
  UC1196811  Mimulus kelloggii Joseph P. Tracy 1908-6 2938 Humboldt nw slope Buck Mountain; Northern Coast Ranges 1219 Comment
  UC41888  Mimulus kelloggii C. C. Marshall 1888-1 Humboldt Comment
  UC1196796  Mimulus layneae Joseph P. Tracy 1939-7-23 16531 Humboldt Willow Creek Trinity River Valley 152 Comment
  UC1196803  Mimulus layneae Joseph P. Tracy 1937-7-5 15373 Humboldt Willow Creek Trinity River Valley 152 Comment
  UC1196830  Mimulus microphyllus Joseph P. Tracy 1933-8-6 12932 Humboldt Lyons Ranch Bald Hills 762 Comment
  UC147923  Mimulus microphyllus Joseph P. Tracy 1908-6 2826 Humboldt nw slope Buck Mountain; Northern Coast Ranges 1219 Comment
  HSC56133  Mimulus moschatus G. L. Clifton, Griswold 1979-8-1 11951 Humboldt Near Mill Creek Lakes, close to the town of Hoopa 1707 Comment
  RSA447970  Mimulus moschatus E. S. Spalding, Williamson 1924-7-11 s.n. Humboldt Arcata. Comment
  RSA447972  Mimulus moschatus Unspecified 1924-7-15 s.n. Humboldt Bull Creek. Comment
  HSC48311  Mimulus moschatus Brad Klipfel 1978-8-3 296 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  RSA15548  Mimulus moschatus Carl B. Wolf 1927-8-30 1257 Humboldt 3 miles S of Thorn3 miles S of Tom's Place Comment
  HSC40029  Mimulus nanus var. nanus Thomas W. Nelson, Jane P. Nelson 1976-6-22 2877 Humboldt On SW-facing slope at Goat Mtn. lookout 1666 Comment
  HSC79337  Mimulus nanus var. nanus D. K. Imper 1982-6-30 Humboldt Near Goat Hill; adjacent to lakes Comment
  UC1222800  Mimulus pulsiferae Joseph P. Tracy 1950-7-6 19008 Humboldt 3 mi s Burr Valley (on the Albee Rd); Buck Mountain 1158 Comment
  HSC48677  Mimulus tilingii Brad Klipfel 1973-7-31 252 Humboldt Along ridge trail SE of N Trinity Mtn. 1829 Comment
  HSC73751  Minuartia douglasii M. A. Baker 1980-7-15 2945 Humboldt Near Whiting Ridge. 1341 Comment
  HSC55346  Mitella diversifolia Griswold, Butler 1979-7-12 7212 Humboldt Near Groves Prairie, close to the town of Willow Creek. 1256 Comment
  SD56850  Mitellastra caulescens Darley F. Howe 1963-8-7 3806 Humboldt 23 mi west of west end to 6 Rivers north fork on #299 213 Comment
  HSC96209  Moehringia macrophylla Rick Lindquist, C. Riley 2005-6-3 2 Humboldt 19.3 mi. S of Hwy. 299 on NF1 1205 Comment
  JEPS79819  Moehringia macrophylla Joseph P. Tracy 1935-7-25 14225 Humboldt near Corral Prairie (Trinity Summit); , near Corral Prairie 1584 Comment
  UC161044  Moehringia macrophylla Joseph P. Tracy 1908-6-8 2631 Humboldt Kneeland Prairie; Northern Coast Ranges, Kneeland Prairie 762 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
  UC229833  Mollugo verticillata Joseph P. Tracy 1921-10-16 5972 Humboldt near Willow Creek (Trinity River Valley); Northern Coast Ranges, Trinity River Valley 152 Comment
  RSA20804  Monardella odoratissima Carl B. Wolf 1937-8-13 9269 Humboldt North Coast Range, 12 miles E of Hoopa Valley on new road towards Trinity Summit. 1677 Comment
  HSC57877  Monardella odoratissima subsp. pallida Overton, Butler 1979-7-31 11413 Humboldt Near Water Dog Lakes, close to the town of Hoopa 1830 Comment
  UC1239678  Monardella odoratissima subsp. pallida Joseph P. Tracy 1932-7-12 10436 Humboldt Corral Prairie Trinity Summit 1584 Comment
  RSA46838  Monardella odoratissima subsp. pallida Doris K. Kildale 1927-7-22 3814 Humboldt Lasseck s Peaks Comment
  SEINET892716  Monardella odoratissima subsp. pallida Carl B. Wolf 1934-1 5848 Humboldt Along Eel River & Redwood Highway, 1.2 miles south of F.K. Lane Grove 60 Comment
  HSC98019  Monardella sheltonii Cara Witte 2007-7-9 457 Humboldt Forest Service Road 4N32. 1.4 mile north of intersection with 4N32B. 1413 Comment
  LA62456  Monardella villosa Harlan Lewis; 1940-7-3 sn Humboldt 1 mi. N of Richardson Grove State Park Comment
  UC577347  Monardella villosa subsp. villosa Joseph P. Tracy 1937-7-11 15425 Humboldt Vicinity of Garberville 121 Comment
  UC161032  Montia diffusa Joseph P. Tracy 1908-6 2725 Humboldt opposite Buck Mountain (Valley of Van Duzen River); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  CAS-BOT-BC445150  Montia parvifolia H. D. Ripley; R. C. Barneby 1945-6-15 6806 Humboldt Trinidad Head 15 Comment
  CHSC33038  Myosotis latifolia James P. Smith 1973-5-26 6855 Humboldt Scotia Bluffs along the Eel River near Rio Dell. Railroad right-of-way. Comment
  HSC12417  Myosotis sylvatica D. Santana 1970-11-15 115 Humboldt Near Fickle Hill Rd. and 7th St. Comment
  CAS-BOT-BC101666  Myrica californica Alice Eastwood 1907-4-21 39 Humboldt Port Trinidad Comment
  JEPS30068  Myrica californica Joseph P. Tracy 1931-4-12 9332 Humboldt Dows Prairie Northern Coast Ranges, Dows Prairie 60 Comment
  POM257618  Myrica californica C. L. Hitchcock, J. S. Martin 1939-7-14 5437 a Humboldt Bluffs facing sea at Shelter cove Comment
  RSA239703  Myrica californica Larry E. DeBuhr 1973-4-23 988 b Humboldt Richardson Grove Redwood State Park. Comment
  HSC77867  Myriophyllum aquaticum J. Miller 1978-5-14 780514 .2 Humboldt Near Central Ave. and Murray Rd. in McKinleyville Comment
  UCD87817  Nassella lepida D. W. Cooper 1956-4-27 s.n. Humboldt Mattole area. Around Petrolia. Comment
  UC133919  Navarretia intertexta Harley P. Chandler Jun 1901 1411 Humboldt Klamath River North Coast Ranges 243 Comment
  SEINET196701  Navarretia leucocephala Joseph P. Tracy 1928-6-24 8476 Humboldt East Ranch, between Middle and North Yager Creeks. 762 Comment
  HSC35870  Navarretia mellita Thomas W. Nelson 1975-8-5 Humboldt Parking area of 7th Day Advent Church in Eureka Comment
  UC908872  Navarretia squarrosa Joseph P. Tracy 1935-7-18 14103 Humboldt Table Bluff 6 Comment
  UC1222717  Navarretia viscidula Joseph P. Tracy 1950-6-23 18863 Humboldt 3 mi ne Alderpoint; Dobbyn Creek 213 Comment
  UC169028  Nemacladus capillaris Joseph P. Tracy Jul 21 1905-Aug 16 1905 2296 Humboldt Elk Mountain; Northern Coast Ranges 1219 Comment
  HSC35029  Nemophila menziesii Thomas W. Nelson, James Nelson 1975-5-24 1845 Humboldt McKeown Ranch, N of Dinsmore. Comment
  HSC32387  Nemophila menziesii var. atomaria Linda M. Barker 1974-5-11 183 Humboldt Redwood National Park, Bald Hills Rd., Gans Prairie 549 Comment
  UC1103815  Nemophila menziesii var. atomaria Joseph P. Tracy 1926-5-15 7481 Humboldt Kneeland Prairie 762 Comment
  UC67069  Nemophila menziesii var. atomaria H. P. Chandler 1276 Humboldt Hupa Mts. 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
  UC144103  Nemophila parviflora Joseph P. Tracy 1909-6-20 3001 Humboldt 3 mi above Wrangletown (Freshwater Creek, Region about Humboldt Bay); Northern Coast Region, Humboldt Bay region, Freshwater Creek 0 Comment
  UC673116  Nemophila parviflora Joseph P. Tracy 1940-7-7 16666 Humboldt Brouse Mt. Grouse Mt. (on banks) 1463 Comment
  CAS-BOT-BC231216  Nemophila parviflora var. austiniae Marck Menke 1999-5-31 32 Humboldt Redwood National Park, near Tall Trees Grove Comment
  UC562591  Nemophila pedunculata Joseph P. Tracy 1927-4-10 7890 Humboldt Berry's North Coast Ranges, Redwood Creek 274 Comment
  CAS-BOT-BC60565  Noccaea fendleri subsp. glauca Lincoln Constance; Reed C. Rollins 1942-5-11 2877 Humboldt North Coast Ranges. Hoopa Valley 5 miles south of Hoopa. 121 Comment
  UCD110165  Notholithocarpus densiflorus Joseph P. Tracy 1927-8-28 8361 Humboldt Near Boynton Prairie. 609 Comment
  CAS-BOT-BC400083  Nuphar polysepala Carl B. Wolf 1937-9-9 9309 Humboldt 1 mi. So. of Capetown on road to Cape Mendocino 91 Comment
  CAS-BOT-BC142290  Oemleria cerasiformis L. R. Abrams 1918-6-16 7190 Humboldt Willow Creek Comment
  HSC31804  Oemleria cerasiformis Steve Selva, Roger Jensen 1974-8-28 93 Humboldt Humboldt State University Freshwater Forest Comment
  HSC77344  Oemleria cerasiformis L. P. Janeway 1983-4-16 231 Humboldt Near the old Hwy. 299 on W side of Berry Summit. 823 Comment
  UCD127735  Oenanthe pimpinelloides Joseph P. Tracy 1950-8-18 19330 Humboldt along Blocksburg Road, near the bridge across Larrabee Creek. 457 Comment
  UC154099  Oenanthe sarmentosa Joseph P. Tracy 1909-9-19 3088 Humboldt near Samoa (Humboldt Bay Region); Humboldt Bay Region 0 Comment
  HSC49088  Oenothera elata subsp. hookeri Patricia Shesgreen 1978-8-12 134 Humboldt 1/2 mi. E of Samoa Cookhouse on Vance Ave., Samoa. Comment
  POM224766  Oenothera glazioviana P. A. Munz 1936-8-13 14384 Humboldt 7 miles east of Arcata. Comment
  JEPS26030  Orobanche californica subsp. californica Joseph P. Tracy 1939-8-6 16398 Humboldt Big Lagoon. Comment
  HSC16684  Orobanche californica subsp. californica Jerry Parker 1968-10-26 205 Humboldt Big Lagoon, dredged sand-spit opposite Sphagnum bog. Comment
  HSC39391  Orobanche fasciculata D. E. Anderson, J. P. Smith 1971-7-6 - 1274 Humboldt Horse Mtn. Comment
  HSC98561  Orobanche uniflora Cara Witte 2008-6-15 733 Humboldt Coldspring Camp. 1410 Comment
  UC1197450  Orobanche uniflora subsp. occidentalis Joseph P. Tracy 1908-6 2881 Humboldt Valley of Van Duzen River, opposite Buck Mountain. Comment
  UC35308  Orobanche uniflora subsp. occidentalis W. C. Blasdale 1896-6-8 Humboldt Graham's. Comment
  HSC55161  Orthilia secunda Gilbert Muth 1979-8-1 12130 Humboldt Near Horse Trail Ridge, close to the town of Hoopa 1677 Comment
  HSC55229  Orthilia secunda G. L. Clifton, Griswold 1979-8-2 12430 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  UC562454  Orthilia secunda Joseph P. Tracy 1932-7-20 10737 Humboldt Trinity Summit, Fir Woods near Corral Prairie 1615 Comment
  UC582575  Orthocarpus imbricatus Joseph T. Gregory 1932-7-11 10416 Humboldt open places at Corral Prairie (Trinity Summit); , open places at Corral Prairie 1584 Comment
  RSA80283  Orthocarpus purpurascens var. latifolius F. W. Peirson 1926-7-14 7064 Humboldt Table Bluff Lighthouse, south of Eureka. Comment
  HSC55971  Osmorhiza occidentalis G. L. Clifton, Overton 1979-7-31 11355 Humboldt Near Tish Tang A Tang Creek, S Fork, close to the town of Hoopa 1433 Comment
  UC1197132  Osmorhiza occidentalis Joseph P. Tracy 1932-7-11 10420 Humboldt Corral Prairie Trinity Summit 1584 Comment
  HSC16703  Oxalis oregana D. E. Anderson 1961-8-11 1726 Humboldt E of Humboldt State University campus 30 Comment
  HSC27853  Oxalis oregana Clifton Raymond Chesbrough 1973-6-19 59 Humboldt 0.25 mi. from Harris and T St. on U St. Comment
  UC14238  Oxalis oregana Chesnut and Drew 1888-7-8 Humboldt Arcata Comment
  UCR123951  Oxalis oregana George K. Helmkamp, E. A. Helmkamp 2001-7-8 6976 Humboldt North Coast, CA Hwy 36, along the Van Duzen River, 19.6 mi east of CA Hwy 101, west of Bar W Road 137 Comment
  SEINET12184454  Oxalis oregana E. A. York 1990-1-10 2664 Humboldt USGS Redwood Field Station, Arcata Comment
  SEINET3347650 Image available Oxalis oregana Joseph P. Tracy 1918-5-28 4940 Humboldt High Prairie Creek, east of Bald Mt. Comment
  HSC16712  Oxalis pes-caprae Richard Steele 1962-3-20 12 Humboldt Arcata, on HSU campus 15 Comment
  SEINET3347146 Image available Oxalis suksdorfii Joseph P. Tracy 1930-6-22 8796 Humboldt Redwood Creek, at Berry's Comment
  UC1103428  Oxalis trilliifolia Joseph P. Tracy 1932-7-15 10584 Humboldt ridges e Corral Prairie (Trinity Summit); Klamath Mtns 1828 Comment
  UC302046  Oxalis trilliifolia Joseph P. Tracy 1926-5-22 7499 Humboldt Prairie Creek Northern Coast Ranges Comment
  CAS-BOT-BC318149  Packera bolanderi var. bolanderi Albert Kellogg; W. G. W. Harford 1868-9 537 Humboldt unspecified Comment
  UC212875  Panicum acuminatum var. acuminatum Joseph P. Tracy 1920-8-15 5356 Humboldt Klamath River Bluff Creek; Northern Coast Ranges, Klamath River at Bluff Creek 152 Comment
  UCD88695  Panicum acuminatum var. fasciculatum Joseph P. Tracy 1938-9-25 16172 Humboldt Bald mountain; at 'Lake Prairie'. 1066 Comment
  SEINET10859947  Panicum bulbosum Joseph P. Tracy 1912-10-20 Tracy 4009 Humboldt Alton. Dried-up slough-bed. Comment
  UC526845  Panicum capillare Joseph P. Tracy 1930-10-12 9207 Humboldt Alton to Fortuna (Eel River on bars); Northern Coast Region, Eel River 15 Comment
  SEINET200959 Image available Parapholis incurva Joeseph P. Tracy 1937-6-5 15328 Humboldt Mouth of Little River. 3 Comment
  UC1103787  Parapholis incurva Joseph P. Tracy 15871 Humboldt Samoa Comment
  HSC37801  Paspalum dilatatum J. P. Smith 1976-8-22 8962 Humboldt Hwy. 101 just S of exit to Murray field. Comment
  HSC20924  Pedicularis densiflora D. E. Anderson 1962-5-1 2202 Humboldt 1 mi. W of Hoopa Comment
  CAS-BOT-BC69342  Pellaea brachyptera L. B. Kildale 1930-8-3 10346 Humboldt Chaparral Mt. at Bug Creek 914 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
  JEPS26253  Penstemon anguineus Joseph P. Tracy 1940-7-7 16671 Humboldt Grouse Mt. 1524 Comment
  HSC55674  Penstemon deustus Walter Overton, Marvin Butler 1979-7-25 9891 Humboldt Near Sims Mtn., close to the town of Willow Creek 1295 Comment
  NY609835  Penstemon deustus var. suffrutescens J. P. Tracy 1935-7-28 14327 Humboldt Trinity Summit, head of Devil's Hole 1828.8 Comment
  RSA33967  Penstemon heterophyllus subsp. purdyi Doris K. Kildale 1926-4-30 1935 Humboldt Bucilana Bridge. Comment
  UC146234  Penstemon heterophyllus var. purdyi Joseph P. Tracy 1908-6 2804 Humboldt opposite Buck Mountain (Valley of Van Duzen River); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  UC1222427  Penstemon laetus var. sagittatus Joseph P. Tracy 1933-7-9 12651 Humboldt Brannan Mountain Northern Coast Ranges, Brannan Mountain 1066 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
  JEPS85630  Penstemon newberryi var. berryi W. L. Jepson July 16 - 23, 1902 2107 Humboldt Trinity Summit 2133 Comment
  HSC21103  Penstemon rattanii D. E. Anderson 1962-7-14 2268 Humboldt 0.25 mi. E of Arcata on Fickle Hill Rd. Comment
  RSA420447  Penstemon rattanii Hutchinson 1927-05 s.n. Humboldt [No location information provided.] Comment
  BLMAR425  Perideridia Jennifer Anthony-Wheeler 2005-7-28 425 Humboldt Lacks Creek, Growing in Flyette prairie 487 Comment
  UC1197125  Perideridia gairdneri subsp. borealis Joseph P. Tracy 1914-10-11 4636 Humboldt Ricks Prairie Northern Coast Region, Eureka 0 Comment
  UC906663  Perideridia kelloggii Joseph P. Tracy 1948-8-11 18476 Humboldt 2 to 6 mi s from Grouse Mt.; Kinsey Ridge 1280 Comment
  HSC56308  Perideridia parishii subsp. latifolia Overton, Butler 1979-8-2 12627 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  HSC24009  Persicaria maculosa R. A. Vanbianchi 1971-9-10 85 Humboldt Along Fiedbrook Rd. .5 mi. from jct. with Hwy. 299 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
  UCD134927  Petasites frigidus var. palmatus R. N. Raynor 1935-3-13 s.n. Humboldt Fort Seward. Comment
  UC1199098  Phacelia bolanderi Joseph P. Tracy 1904-7-17 2121 Humboldt near Hydesville; Northern Coast Region 60 Comment
  UC673184  Phacelia bolanderi Lincoln Constance and Reed C. Rollins 1942-5-12 2892 Humboldt 2 mi n Orleans; Klamath-Siskiyou Region, Klamath River 121 Comment
  JEPS1545  Phacelia corymbosa Joseph P. Tracy 1926-6-20 7624 Humboldt Horse Mountain Northern Coast Ranges 1402 Comment
  POM127633  Phacelia heterophylla subsp. virgata H. P. Chandler 1901-05 1257 Humboldt Redwood belt. 152 Comment
  HSC75489  Phacelia procera J. O. Sawyer 1980-7-18 3630 Humboldt North Trinity Mountain Research Natural Area, north of Mill Creek Lake to Red Cap Hole. Comment
  UCD88769  Phalaris californica Joseph P. Tracy 1951-7-27 19630 Humboldt At Englewood, near Redcrest. Comment
  CAS-BOT-BC76568  Philadelphus lewisii Doris K. Kildale 1926-6-27 2203 Humboldt On road to Larabee Valley from McLellan Mt. 792 Comment
  UC1103789  Phleum alpinum Joseph P. Tracy 1919-9-24 5293 1/2 Humboldt Trinity Summit; Northern Coast Ranges, Trinity Summit 1889 Comment
  HSC23102  Phleum pratense Norman Dennis 1965-6-19 131 Humboldt 0.25 mi S and 1.0 mi. E of junction of Barry Ridge Rd. and Eureka-Bridgeville county rd., along Ashfield Ridge Rd., 5 mi. SE of Kneeland 793 Comment
  UC1145044  Phleum pratense Joseph P. Tracy 1947-8-24 17899 Humboldt Meadow at Box Camp Trinity Summit 1463 Comment
Read comments
Aug 5 2009
  HSC100895  Phlox douglasii Carl C. Marshall Jun 1886 349 Humboldt Trinity Summit. Comment
  UC1178966  Phlox douglasii subsp. rigida Joseph P. Tracy 1933-7-11 12657 Humboldt Horse Mountain 1432 Comment
  UC52845  Phlox gracilis Joseph Burtt Davy and Walter C. Blasdale 1899-5 5789 Humboldt Trinity Summit Comment
  HSC15921  Phoradendron serotinum subsp. tomentosum H. D. Sumner 1959-7-13 Humboldt Dirt road to Hoopa 305 Comment
  HSC36086  Phyllospadix scouleri McCready 1959-11-8 Humboldt Near Trinidad Head Comment
  HSC28257  Picea sitchensis Gary S. Lester 1973-12-2 56 Humboldt E of HSC campus Comment
  POM21764  Picea sitchensis L. R. Abrams 1916-7-18 6131 Humboldt Arcata to Trinidad. Comment
  MACF017417  Pinus contorta Trudy R. Ericson 1974-8-5 198 Humboldt Hwy 255 between Eureka and Arcata, near the shore Comment
  RSA46880  Pinus lambertiana Doris K. Kildale 1926-9-5 2611 Humboldt Lassecks Peaks. 1570 Comment
  RSA275331  Pinus monticola Robert M. Specht 1977-11-20 1190 Humboldt Near Hwy. 101, flats along Gerogia Pacific s A-line. 122 Comment
  CAS-BOT-BC78981  Pinus muricata Elmer I. Applegate 1931-3-28 6626 Humboldt Near and north of Trinidad Comment
  UC1196420  Piperia elongata Joseph P. Tracy 1948-8-22 18100 Humboldt 5 mi e Carlotta (by old Strong's District School House) 60 Comment
  HSC104428  Piperia transversa Greg O'Connell 2013-6-27 Humboldt Ridge west of Chaparral Mountain Comment
  RSA95501  Pityopus californicus Harry L. Buckalew s.n. Humboldt James Irvine Trail - 2 miles from the ocean; Prairie Creek State Park. Comment
  UC1222225  Plagiobothrys bracteatus Joseph P. Tracy 1942-6-15 17139 Humboldt in mddy stream or mud South Fork of Eel River, Miranda Comment
  UC667003  Plagiobothrys bracteatus Joseph P. Tracy 1939-5-14 16287 Humboldt by spring Van Duzen Valley, Dinsmore's 731 Comment
  CAS-BOT-BC228214  Plagiobothrys hispidulus Joseph P. Tracy 1932-7-10 10386 Humboldt Klamath Mountains, Trinity Summit. At Corral Prairie 1524 Comment
  SEINET3152905  Plagiobothrys nothofulvus N. Dennis 1965-6-11 114 Humboldt About 1/4 miles S and 1 mile E of the juction of Berry Ridge Road and the Eureka-Bridgeville county road, along Ashfield Ridge Road. About 5 miles SE of Kneeland. 792 Comment
  UC1239614  Plagiobothrys nothofulvus Joseph P. Tracy 1918-5-1 4909 Humboldt Kneeland Prairie Northern Coast Ranges, Kneeland Prairie 762 Comment
  UC54753  Plagiobothrys nothofulvus Joseph Burtt Davy and Walter C. Blasdale 1899-6-7 5386 Humboldt ridge near Harris; North Coast Ranges Comment
  UC54754  Plagiobothrys nothofulvus Harley P. Chandler May, 1901 1083 Humboldt Harris North Coast Ranges 609 Comment
  UC1239609  Plagiobothrys reticulatus Joseph P. Tracy 1936-6-9 14884 Humboldt Bear River Ridge Northern Coast Ranges, Bear River Ridge 609 Comment
  UC1541669  Plagiobothrys reticulatus H. E. and S. T. Parks July 1937 24042 Humboldt Trinidad, Spruce Cove Comment
  UC184998  Plagiobothrys reticulatus Joseph P. Tracy 1904-7-4 2111 Humboldt at Eureka; Northern Coast Region, Eureka 0 Comment
  UC1222211  Plagiobothrys reticulatus Joseph P. Tracy 1942-6-15 17137 Humboldt n side South Fork Eel River (Myers, 10 mi s Dyerville); , Myers Comment
  UC1222214  Plagiobothrys reticulatus Joseph P. Tracy 1942-6-15 17142 Humboldt Miranda South Fork Eel River, Miranda 121 Comment
  UC139568  Plagiobothrys reticulatus Joseph P. Tracy 1915-6-27 4660 Humboldt near the Creamery (Hydesville); Northern Coast Ranges, Hydesville 91 Comment
  JEPS61044  Plagiobothrys reticulatus var. reticulatus Joseph P. Tracy 1935-5-25 13844 Humboldt Fort Seward 106 Comment
  JEPS60979 Image available Plagiobothrys reticulatus var. rossianorum Joseph P. Tracy 1903-5-22 1878 Humboldt Alder Point Flat Eel River Comment
  UC1222203  Plagiobothrys scouleri Joseph P. Tracy 1949-6-25 18353 Humboldt Box Camp Trinity Summit 1463 Comment
  UC1222207  Plagiobothrys scouleri Joseph P. Tracy 1946-5-19 17535 Humboldt near Ashfield; Kneeland Prairie 822 Comment
  UC1239607  Plagiobothrys stipitatus Gertrude Robinson 1940-4-28 Humboldt Bridgeville 198 Comment
  UC249519  Plagiobothrys tenellus Joseph P. Tracy 1922-4-30 5990 Humboldt near Willow Creek; Northern Coast Ranges, Trinity River Valley 152 Comment
  UC585985  Plantago erecta Joseph P. Tracy 1932-5-10 9945 Humboldt near Petrolia; Northern Coast Ranges, Mattole Valley 60 Comment
  UC28010  Plantago lanceolata J. Burtt Davy 1899-6-16 5553 Humboldt near Scotia; North Coast Ranges Comment
  UCD124573  Plantago lanceolata Linda M. Barker 1976-4-30 1401 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  UC585989  Plantago major Joseph P. Tracy 1931-9-13 9671 Humboldt Mouth of Eel River 6 Comment
  SEINET14412274  Plantago major Joseph P. Tracy 1942-1 17300 Humboldt Fickle Hill, 6 miles southeast of Arcata 610 Comment
  HSC79381  Plantago maritima Kenneth Clark 1980-5-10 642 Humboldt Shelter Cove, bluffs of Point Delgada. 5 Comment
  HSC83041  Plantago maritima A. L. Eicher 1985-6-16 Humboldt SW side of the mouth of Mad River Slough 1 Comment
  HSC95094  Plantago maritima Andrea Pickart 2002-6-27 118 Humboldt Mad River Slough and Dunes, N of parking lot area at N end of access road. 0 Comment
  UCD124621  Plantago maritima P. B. Kennedy 1928-7-15 s.n. Humboldt Sea Cliffe, near Trinidad. Comment
  HSC16869  Plantago subnuda W. D. Stevens 1967-7-27 66 Humboldt Above Hwy. 101 W of Essex Ln. 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
  HSC55027  Platanthera dilatata Overton, Butler 1979-7-31 11451 Humboldt Near Water Dog Lakes, close to the town of Hoopa 1830 Comment
  HSC54595  Platanthera dilatata var. leucostachys Overton, Butler 1979-7-24 9669 Humboldt Near Friday Camp, close to the town of Willow Creek. 1250 Comment
  HSC98718  Platanthera dilatata var. leucostachys Cara Witte 2008-7-1 791 Humboldt Near Grouse Mountain spring. Along Forest Service Road 5N04. 1/4 mile east of intersection with 4N70. 1583 Comment
  UC845458  Platanthera hyperborea var. gracilis Milo S. Baker 1926-1 51 -1926 Humboldt South Fork Mountain South Fork Mountain (eastern Humboldt County, Forest Road 4 1/2 mi n highway) Comment
  UC1196422  Platanthera leucostachys Joseph P. Tracy 1937-7-25 15536 Humboldt head Little Hors-Linto Creek; Trinity Summit, head Little Hors-Linto Creek 1371 Comment
  HSC55140  Platanthera sparsiflora G. L. Clifton, Griswold 1979-8-1 12021 Humboldt Near N Trinity Mtn., close to the town of Hoopa. 1798 Comment
  HSC99365  Platanthera sparsiflora K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-6-24 14 Humboldt Near North Trinity Mtn, 11. 5 mi east of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  SFV18500  Platystemon californicus A. M. Deshais 2002-4-12 36 Humboldt Manila Dunes. Comment
  UC146098  Platystemon californicus Joseph P. Tracy 1904-5-1 2046 Humboldt near Bucksport (region about Humboldt Bay); Northern Coast Region, region about Humboldt Bay 0 Comment
  HSC77949  Plectritis congesta subsp. brachystemon Jimerson, Imper 1982-5-17 1439 Humboldt Near Ashfield Ridge. 822 Comment
  HSC90190  Pleuropogon refractus Larry Levine 1991-4-27 4911 Humboldt Maple Creek, L.W. Shatz Tree Farm Comment
  HSC94001  Pleuropogon refractus Tony LaBanca 2000-3-24 1001 Humboldt 680 Comment
  SJSU16005  Pleuropogon refractus John Rawlings 2016-5-19 1802 Humboldt James Irvine Trail between the lower trailhead and the Fern Canyon turnoff, Prairie Creek Redwoods State Park 22 Comment
  UC1152688  Pleuropogon refractus D. E. Anderson 1963-3-24 2404 b Humboldt Old logging road on s side of Jacoby Creek Comment
  UCD90107  Pleuropogon refractus Joseph P. Tracy 1939-7-9 16334 Humboldt Snow Camp. Comment
  SEINET255064 Image available Poa annua J. P. Tracy 1914-7-5 4548 Humboldt Bald Mtn between High Prairie and Snow Camp Comment
  RSA10140  Poa compressa Joseph P. Tracy 1927-7-3 8224 Humboldt Fieldbrook 61 Comment
  CAS-BOT-BC255118  Poa confinis Joseph P. Tracy 1927-6-26 8209 Humboldt Stone Lagoon 6 Comment
  HSC10681  Poa confinis D. M. Thomson 1965-5-20 68 Humboldt 1.0 mi. S of Samoa. Comment
  UC525631  Poa confinis Joseph P. Tracy 1927-6-26 8209 Humboldt Stone Lagoon; North Coast Region 6 Comment
  JEPS71279  Poa douglasii unknown 1925-7-29 118 Humboldt Samoa Comment
  UC34064  Poa douglasii J. P. Tracy 1900-7-4 886 Humboldt Ocean Beach at Samoa (opposite Eureka) Comment
  POM161908  Poa howellii Joseph P. Tracy 1921-4-24 5451 Humboldt Phillipsville. Facing south fork of Eel River. 91 Comment
  UC1145110  Poa howellii Joseph P. Tracy 1946-6-23 17599 Humboldt Kneeland Prairie 762 Comment
  HSC38922  Poa macrantha Linda M. Barker 1976-6-22 1625 .5 Humboldt 3 mi. W of Arcata Comment
  HSC10759  Poa pratensis D. W. C. 1956-6-20 17 Humboldt May Ranch, Brigdeville. Comment
  HSC98530  Poa pratensis subsp. pratensis Cara Witte 2007-7-8 442 Humboldt Board Camp Mountain. Trail 4E28. 1496 Comment
  HSC102627  Poa secunda subsp. secunda M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-29 1612 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1579 Comment
  UC1607861  Poa secunda subsp. secunda H. E. Parks 1926-5-9 7466 Humboldt head of South Yager Creek Comment
  UC180501  Poa secunda subsp. secunda Joseph P. Tracy 1913-6-14 4121 Humboldt opposite Buck Mt (Dinsmore's Ranch); Northern Coast Ranges, valley of Van Duzen River 762 Comment
  UCD90874  Poa secunda subsp. secunda J. B. Davy; W. C. Blasdale 1899-6-19 5658 Humboldt Hoopa Summit. Comment
  HSC36618  Poa unilateralis J. D. Ackerman 1974-5-25 255 Humboldt Trinidad, Trinidad Beach, S of Trinidad Head. Comment
Read comments
Mar 11 2013
  HSC45283  Polycarpon tetraphyllum R. W. Becking 1978-5-21 Humboldt Coast Guard Station on the N Spit to Humboldt Bay in bunker area Comment
  HSC44772  Polygala californica Thomas W. Nelson, Jane P. Nelson 1977-7-4 3585 Humboldt W side of road N from Alder Springs 1494 Comment
  JEPS50493  Polygonum amphibium var. emersum Joseph P. Tracy 1927-5-14 8026 Humboldt Patterson Ranch Trinity River Valley, Willow Creek (pond) 152 Comment
  UC55943  Polygonum aviculare subsp. aviculare J. P. Tracy 1901-7-28 1219 Humboldt Immediate vicinity of Eureka 0 Comment
  UC1116243  Polygonum californicum Joseph P. Tracy 1942-9-6 17305 Humboldt opposite Buck Mountain; Van Duzen River, Dinsmore's 762 Comment
  HSC55188  Polygonum douglasii G. L. Clifton, Griswold 1979-8-2 12251 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  RSA167275  Polygonum douglasii subsp. austiniae Joseph P. Tracy 1947-8-24 17923 Humboldt On Box Camp trail, 1/2 mile W of summit. 1677 Comment
  UC1222329  Polygonum minimum Joseph P. Tracy 1950-8-8 19281 Humboldt on trail between Box Camp and Croghan Hole; Trinity Summit 1676 Comment
  UCD100526  Polygonum paronychia James Payne Smith Jr.; Advanced Plant Taxonomy Class 1971-10-6 4957 Humboldt End of Murray Road in McKinleyville. Comment
  CAS-BOT-BC419824  Polygonum parryi Joseph P. Tracy 1930-7-6 8855 Humboldt Valley of South Yager Creek 762 Comment
  UC672955  Polygonum polygaloides subsp. kelloggii Joseph P. Tracy 1932-7-10 10379 Humboldt Corral Prairie Trinity Summit 1584 Comment
  CDA2916  Polygonum sachalinense T. C. Fuller 1968-7-3 17443 Humboldt West side of the south-bound lanes of Highway 101 freeway, just north of the South Bay Depot Road, Fields Landing. 0 Comment
  CAS-BOT-BC76844  Polypodium glycyrrhiza Donald Branscomb 1959-2-1 s.n. Humboldt Trinidad Comment
  UC275412  Polypodium glycyrrhiza Joseph P. Tracy 1925-11-25 7326 Humboldt near the S Fork Trinity River Valley; Northern Coast Ranges 182 Comment
  UC812497  Polypodium glycyrrhiza Eliz. Parsons Hawver June 1915 Humboldt Carlotta Comment
  UCD136880  Polypodium glycyrrhiza Linda M. Barker 1976-2-22 1313 Humboldt 3 miles west of Arcata. Comment
  UCD136882  Polypodium glycyrrhiza M. Wiesendanger 1928-4-7 902 Humboldt Redwood Highway, Lane's Redwood Flat, probably the Franklin K. Lane Grove. Comment
  UC197909  Polypodium glycyrrhiza Joseph P. Tracy 1913-3-9 4023 Humboldt Hydesville; Northern Coast Region 30 Comment
  CHSC94935  Polypodium scouleri K. Lang; J. Lang 2005-3-17 31 Humboldt Fern Canyon, near Orick. 15 Comment
  SEINET200797 Image available Polypodium scouleri Frank C. Gregory 1923-8-4 Humboldt Eureka 61 Comment
  POM319595  Polypodium scouleri Patricia Wilder 1968-8-21 4407 Humboldt Northern coastal arm of Humboldt Bay, ca. 1 mile SW of Samoa, in sand dunes. 15 Comment
  HSC10825  Polypogon interruptus J. P. Tracy 1927-7-16 8261 Humboldt Eureka 0 Comment
  HSC10829  Polypogon interruptus Larry Berti 1968-10-26 Humboldt Big Lagoon County Park, SW corner Comment
  UCD91028  Polypogon interruptus Joseph P. Tracy 1936-6-8 14871 Humboldt Trinidad. 9 Comment
  CAS-BOT-BC233213  Polypogon maritimus Joseph P. Tracy 1933-7-20 12811 Humboldt Along Mad River, near Blue Lake 15 Comment
  CAS-BOT-BC232593  Polypogon monspeliensis Doris K. Kildale 1927-6-25 3546 Humboldt Shelter Cove Comment
  HSC62871  Polypogon monspeliensis J. M. DiTomaso 1979-4-21 887 Humboldt Clam Beach. Comment
  UC1103194  Polypogon monspeliensis Joseph P. Tracy 1918-7-1 4966 Humboldt along Eel River from South Fork to Scotia Holmes Flat; Northern Coast Ranges, along Eel River 60 Comment
  HSC102542  Polystichum imbricans M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-29 1533 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1579 Comment
  HSC72980  Polystichum imbricans Gail Newton 1980-7-15 1578 Humboldt Near Sims Mtn. 1311 Comment
  HSC41301  Polystichum munitum Brad Klipfel 1974-7-27 500 Humboldt Horse Mtn. Comment
  HSC54599  Polystichum munitum Overton, Butler 1979-7-24 9679 Humboldt Near Friday Camp, close to the town of Willow Creek. 1250 Comment
  HSC54558  Polystichum scopulinum Overton, Butler 1979-7-24 9567 Humboldt Near Titlow Hill, close to the town of Willow Creek 1097 Comment
  CAS-BOT-BC102908  Populus trichocarpa Doris K. Kildale; L. B. Kildale 1930-4-13 9571 Humboldt Bridgeville 289 Comment
  UC297845  Potamogeton foliosus H. E. Parks 1923-5-30 1758 Humboldt Eureka Comment
  UC1103514  Potamogeton foliosus Joseph P. Tracy 1923-5-30 6247 Humboldt pond at mouth of Little River; Northern Coast Ranges 1 Comment
  BLMAR668  Potamogeton nodosus Jennifer Wheeler 2012-10-10 668 Humboldt Lacks Creek, Beaver Ridge Pond 914 Comment
  UC1099821  Potamogeton pectinatus Malcolm A. Nobs, S. Galen Smith 1949-8-3 1162 a Humboldt 1 mi s of Fields Landing; Eel River Valley Comment
  CAS-BOT-BC454066  Potamogeton pusillus subsp. pusillus S. K. Harris 1938-9-12 s.n. Humboldt Backwater of Eel River, near Fernbridge Comment
  UC302159  Potamogeton richardsonii E. G. Pluke 1926-8-1 Humboldt w of Dows Prairie (lagoon at mouth of Widow White Creek); Widow White Creek 3 Comment
  CAS-BOT-BC143078  Potentilla anserina subsp. pacifica Carl B. Wolf 1927-8-22 792 Humboldt Big Lagoon Comment
  HSC70643  Prosartes hookeri R. York 1980-5-18 561 Humboldt Near Black Mtn. 1006 Comment
  HSC100561  Prosartes menziesii Carl C. Marshall May 1886 51 Humboldt Damp woods. Comment
  CAS-BOT-BC517384  Prosartes smithii Doris K. Kildale 1927-3-20 2927 Humboldt South Fork of Eel River Comment
  CAS-BOT-BC517503  Prosartes smithii H. C. Cantelow 1936-5-17 s.n. Humboldt 3 miles east of Orick Comment
  CAS-BOT-BC517511  Prosartes smithii Myrtle Paulson 1918-4-28 s.n. Humboldt Eureka Comment
  HSC49178  Prosartes smithii J. O. Sawyer 1977-4-23 2848 Humboldt Bluff Creek Campground Comment
  SEINET12050892  Prosartes smithii F. H. Utech 1977-1 77 -370 Humboldt ca 4.5 mi S of Del Norte County line on US 101 enroute to Crescent City Comment
  UC630493  Prunella vulgaris var. lanceolata H. E. and S. T. Parks July, 1937 24052 Humboldt Spruce Cove Trinidad; , Trinidad Comment
  SD93030  Prunella vulgaris var. lanceolata W. Bertsch 1953-7-30 226 Humboldt Highway 101 near Dyerville. 60 Comment
  CAS-BOT-BC154739  Prunus virginiana var. demissa Doris K. Kildale 1926-5-20 3240 Humboldt Bug Creek 792 Comment
  CAS-BOT-BC357600  Pseudognaphalium stramineum Henry M. Pollard 1946-8-22 s.n. Humboldt Ullathorne Riffle, Klamath River, Orleans region Comment
  RSA1658  Pseudotsuga menziesii C. B. Wolf 1930-10-29 sn Humboldt Old Coast Rd. 7 mi S of Honeydew Post Office. 305 Comment
  UC169084  Psilocarphus oregonus Joseph P. Tracy 1912-7-30 3890 Humboldt opposite Buck Mountain; Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  UC582501  Psilocarphus tenellus Joseph P. Tracy 1927-7-4 8236 Humboldt Iaqua 609 Comment
  CAS-BOT-BC361929  Psilocarphus tenellus L. R. Abrams 1918-6-13 7094 Humboldt Fortuna Comment
  UC1223162  Psilocarphus tenellus Joseph P. Tracy 1948-7-26 18075 Humboldt Willow Creek Trinity River Valley 152 Comment
  SEINET11793951  Psilocarphus tenellus var. tenellus J. P. Tracy 1942-1 17293 Humboldt 1 mi N of Redwood House, valley of South Yager Creek 610 Comment
  HSC46092  Pteridium aquilinum var. pubescens J. P. Smith, Steve Selva 1970-6-14 3855 Humboldt Along Hwy. 96 at Whitmore Creek 152 Comment
  UCD136153  Pteridium aquilinum var. pubescens Linda M. Barker 1976-5-13 1480 Humboldt Lanphere-Christensen Dunes. 3 miles west of Arcata. Comment
  HSC36260  Pteridium aquilinum var. pubescens John Rehling 1974-8-19 20 Humboldt Comment
  CAS-BOT-BC460602  Pyrola aphylla Doris Kildale 1931-5-24 10846 Humboldt Little Laribee, Laribee Valley Comment
  CAS-BOT-BC460605  Pyrola aphylla Doris K. Kildale 1925-6-28 840 Humboldt Laurence Creek 609 Comment
  CAS-BOT-BC462868  Pyrola asarifolia Volney Rattan 1878-1-1 s.n. Humboldt Unspecified Comment
  HSC41292  Pyrola dentata Brad Klipfel 1974-7-27 491 Humboldt Horse Mtn. Comment
  HSC44342  Pyrola dentata Brad Klipfel 1975-6-17 687 Humboldt Horse Mtn. Comment
  HSC98084  Pyrola dentata Cara Witte 2007-7-10 474 Humboldt Horse Mountain Botanical Area. Forest service Road 6N36A. 1334 Comment
  HSC41317  Pyrola picta Brad Klipfel 1974-9-2 535 Humboldt Horse Mtn. Comment
  UC1541552  Pyrola picta Harold E. Parks 1934-6-27 4931 Humboldt Horse Mountain 1280 Comment
  SFV18591  Pyrola picta T. W. Nelson, J. P. Nelson 1987-6-11 8569 Humboldt Along an unnumbered branch road off USFS Road 11H21. Comment
  UC314639  Pyrola picta Joseph P. Tracy 1926-6-6 7564 Humboldt Hoopa Mountain. On road west from Hoopa Valley 914 Comment
  HSC40858  Quercus chrysolepis Thomas W. Nelson 1976-7-9 2988 Humboldt Ridge S of the E peak of the Lassic Peak (Signal peak) group. 1707 Comment
  JEPS38040  Quercus chrysolepis Lincoln Constance 1934-6-15 885 Humboldt Summit of Grasshopper Peak South Fork Eel River, Bull Creek Region 975 Comment
  CAS-BOT-BC94313  Quercus garryana Doris K. Kildale 1928-7-1 5666 Humboldt Klamath River at Bluff Creek Comment
  HSC35716  Quercus garryana Thomas W. Nelson 1975-10-12 2233 Humboldt McKeown Ranch, N of Dinsmore Comment
  UC54686  Quercus garryana Joseph Burtt Davy and Walter C. Blasdale Jun 21 1899-Jun 23 1899 5854 Humboldt Trinity Summit, at lake near the top North Coast Ranges Comment
  BLMAR208  Quercus garryana subsp. breweri Jennifer Anthony-Wheeler 1996-7-9 208 Humboldt Pilot ridge., growing as main hardwood component of stand 1280 Comment
  OBI36116  Quercus garryana var. garryana David J. Keil 1983-7-1 17265 Humboldt Ca. 8 mi W of jctn US 101 along Bull Creek Flats rd Comment
  HSC98688  Quercus kelloggii Cara Witte 2008-10-18 1060 Humboldt Horse Mountain Botanical Area. Along Forest Service 6N36. 1248 Comment
  UC502988  Quercus kelloggii Joseph P. Tracy 1928-9-30 8510 Humboldt near Bridgeville; Northern Coast Ranges 304 Comment
  UC672858  Quercus kelloggii Joseph P. Tracy 1940-9-15 16723 Humboldt Willow Creek Trinity River Valley 152 Comment
  CAS-BOT-BC104332  Quercus sadleriana Clarence R. Quick 1959-6-24 59 -41 Humboldt Bee Mt. ca. 12 miles SW of Orleans Comment
  CAS-BOT-BC104335  Quercus sadleriana Milo S. Baker 1947-8-10 11896 Humboldt 16 mi NE of Hoopa along trail to Trinity Summit from end of forest road 1463 Comment
  HSC75961  Quercus sadleriana Overton, Butler 1979-8-2 12593 Humboldt Near Bret Hole, close to the town of Hoopa 1554 Comment
  HSC102574  Quercus vacciniifolia M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-29 1561 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1579 Comment
  HSC72804  Quercus vacciniifolia M. A. Baker 1980-6-16 1939 Humboldt Near Monks Camp. 1097 Comment
  UC1196538  Quercus vacciniifolia Joseph P. Tracy 1934-6-27 11044 Humboldt Horse Mountain Northern Coast Ranges 1524 Comment
  CAS-BOT-BC379460  Ranunculus alismifolius Volney Rattan 1883-6-1 s.n. Humboldt Landslide ponds on the divide between Mad River and Redwood Creek Comment
  CAS-BOT-BC379199  Ranunculus aquatilis var. aquatilis Henry M. Pollard 1946-8-13 s.n. Humboldt pond near Harley place, Orleans region Comment
  HSC26276  Ranunculus aquatilis var. diffusus Thomas W. Nelson 1971-5-29 453 Humboldt E side of the Big Bend Rd. near Maple Creek Comment
  UC184716  Ranunculus aquatilis var. hispidulus Joseph P. Tracy 1913-6-23 4276 Humboldt near summit of ridge between Van Duzen River and Mad River (in shallow but permanent pond); Northern Coast Ranges, Dinsmore's Ranch 1066 Comment
  JEPS5885  Ranunculus bulbosus Joseph P. Tracy 1938-7-15 16080 Humboldt near Grizzly Bluff; Eel River Valley 15 Comment
  BLMAR637  Ranunculus occidentalis Jennifer Anthony-Wheeler 2011-6-21 637 Humboldt Lacks Creek, Pine Ridge Road 914 Comment
  UC249651  Ranunculus occidentalis Joseph P. Tracy 1922-5-29 6070 Humboldt head of South Yager Creek Northern Coast Ranges 762 Comment
  HSC70952  Ranunculus orthorhynchus J. M. DiTomaso 1981-5-15 2008 Humboldt Larabee Valley, 10 mi. E of Bridgeville on Hwy. 36 Comment
  JEPS79960  Ranunculus orthorhynchus var. orthorhynchus Joseph P. Tracy 1922-5-21 6050 Humboldt Fieldbrook Northern Coast Ranges 60 Comment
  UC118220  Ranunculus orthorhynchus var. orthorhynchus J. W. Blankinship 1893-6-15 Humboldt Yager Comment
  HSC69865  Ranunculus orthorhynchus var. platyphyllus Thomas W. Nelson 1978-5-28 4089 Humboldt McKeown Ranch, N of Dinsmore 762 Comment
  JEPS79962  Ranunculus repens Joseph P. Tracy 1918-4-7 4868 Humboldt Little River Northern Coast Ranges (mouth) 30 Comment
  HSC56212  Ranunculus uncinatus G. L. Clifton, Griswold 1979-8-2 12220 Humboldt Near Oregon Creek, close to the town of Hoopa. 1661 Comment
  CAS-BOT-BC55834  Rhamnus C. Hart Merriam 1921-7-7 s.n. Humboldt Ridges west of the Van Duzen River Comment
  CDA35696  Rhamnus californica subsp. occidentalis T. Gallion 1958-7-11 Humboldt Weitchpec. 0 Comment
  UC199061  Rhamnus purshiana Chesnut and Drew Jul 1888 Humboldt Jarnigan's Comment
  CAS-BOT-BC56614  Rhododendron macrophyllum Ella Dales Cantelow 1936-5-17 1235 Humboldt 9 mi. e. of Orick Comment
  HSC7873  Rhododendron macrophyllum P. Markle 1962-5-22 54 Humboldt End of 18th St., Arcata Community Forest Comment
  UC314636  Rhododendron occidentale Joseph P. Tracy 1926-6-27 7663 Humboldt Northern Coast Ranges, Horse Mountain Horse Mountain; Northern Coast Ranges, Horse Mountain 1463 Comment
  CAS-BOT-BC433132  Ribes Doris K. Kildale 1927-4-17 3076 Humboldt Bug Creek 792 Comment
  CAS-BOT-BC433135  Ribes Doris K. Kildale; L. B. Kildale 1930-5-12 9558 Humboldt McClellan Hill near Bridgeville 609 Comment
  CAS-BOT-BC92521  Ribes binominatum Joseph P. Tracy 1932-7-13 10487 Humboldt Klamath Mountains. Trinity Summit. Near Corral Prairie. 1524 Comment
  HSC53831  Ribes binominatum Griswold, Butler 1979-7-10 6279 Humboldt Near Board Camp Mtn., close to the town of Willow Creek 1372 Comment
  HSC100490  Ribes bracteosum Carl C. Marshall May 1886 194 Humboldt Near stream. Comment
  CAS-BOT-BC108912  Ribes divaricatum var. pubiflorum H. E. McMinn 1922-8-5 345 Humboldt Along Van Duzen River. Comment
  HSC103215  Ribes divaricatum var. pubiflorum Jade Paget-Seekins 2010-4-16 9 Humboldt Hwy 36. Van Duzen County Park. Along the road on the west side of the park. 95 Comment
  HSC70894  Ribes inerme var. klamathense J. M. DiTomaso 1981-5-15 2000 Humboldt Larabee Valley, 10 mi. E of Bridgeville on Hwy. 36 Comment
  UC492206  Ribes inerme var. klamathense Joseph P. Tracy 1927-5-15 8039 Humboldt near The South Fork; Northern Coast Ranges, Trinity River Valley 182 Comment
  UC1198907  Ribes laxiflorum J. P. Tracy 1901-6-10 1122 Humboldt immediate vicinity Eureka 0 Comment
  UC1198925  Ribes lobbii Joseph P. Tracy 1936-8-8 15139 Humboldt ne Hawkins Bar.; Trinity Summit Range, Happy Camp Mountain 1280 Comment
  UC492232  Ribes lobbii Joseph P. Tracy 1927-5-15 8065 Humboldt w Hoopa (near summit on Road to Bair's); Northern Coast Ranges, Hoopa Mountain 1066 Comment
  HSC74200  Ribes marshallii M. A. Baker 1980-7-19 3033 Humboldt Near Bret Hole. 1814 Comment
  LA205539  Ribes marshallii Joseph P. Tracy; 1932-7-15 10592 Humboldt Klamath Mountains, Trinity Summit. ridges E of Corral Prairie 1828 Comment
  CAS-BOT-BC206041  Ribes menziesii Joseph P. Tracy 1948-3-6 17953 Humboldt Trinidad 60 Comment
  CSUSB1881  Ribes menziesii Keith Thompson 1972-3-27 Humboldt Maple Cr. 853 Comment
  JEPS43484  Ribes menziesii Lincoln Constance 1934-6-3 801 Humboldt Dyerville, foot of bank along n side of Redwood Highway Bull Creek Region, South Fork Eel River Comment
  UC1198930  Ribes menziesii Joseph P. Tracy 1938-4-5 15707 Humboldt North Fork of Mad River (its eastern limit here) Mad River 304 Comment
  UC1198932  Ribes menziesii Joseph P. Tracy 1921-3-13 5421 Humboldt near Alton (Drake's Hill); Northern Coast Region 30 Comment
  HSC20325  Ribes roezlii J. Sandborg, F. Sandborg 1968-7-19 56 Humboldt Bluff Creek near Notice Creek 793 Comment
  HSC74339  Ribes roezlii M. A. Baker 1980-5-18 1290 Humboldt Near Black Mtn. 1006 Comment
  UC1198945  Ribes roezlii Joseph P. Tracy 1932-3-19 9788 Humboldt Blue Slide Northern Coast Ranges, Van Duzen River 91 Comment
  UC902058  Ribes roezlii Joseph P. Tracy 1942-3-8 17067 Humboldt Miranda South Fork of Eel River 121 Comment
  UCR270273  Ribes roezlii John F. Emmel 2003-7-30 1799 Humboldt North Coast Range, Redwood National Park, 16.6 road miles southeast of Hwy 101 on Bald Hills Road, c. 0.3-0.4 air mile west of Schoolhouse Peak 823 Comment
  HSC20329  Ribes roezlii var. cruentum R. Spellenberg, D. Sutherland, A. Sylvester 1966-3-27 1360 Humboldt 1.0 mi. E of Redwood Creek along Hwy. 299 Comment
  HSC41269  Ribes sanguineum Brad Klipfel 1974-6-25 411 Humboldt Horse Mtn. Comment
  UC1198914  Ribes sanguineum Joseph P. Tracy 1935-7-22 14125 Humboldt Forks of Tish-Tang-a-Tang Creek Trinity Summit 1371 Comment
  UC492209 Image available Ribes sanguineum Joseph P. Tracy 1927-6-12 8155 Humboldt lower slopes Horse Mountain; Northern Coast Ranges 1219 Comment
  CAS-BOT-BC144697  Ribes sanguineum var. glutinosum Doris K. Kildale 1928-7-29 5926 Humboldt Bear River at Capetown 15 Comment
  UC1198909  Ribes sanguineum var. glutinosum Joseph P. Tracy 1948-9-26 18227 Humboldt 6 mi se Arcata (Fickle Hill) 609 Comment
  JEPS49246  Ribes sanguineum var. glutinosum W. L. Jepson 1902-7-1 1972 Humboldt Hupa Road at Berry's Ranch Redwood Creek Comment
  HSC103221  Ribes sanguineum var. sanguineum Jade Paget-Seekins 2010-5-2 14 Humboldt Off 299 between Big Bar and Burnt Ranch. Up Forest Route 4 approx. 8 miles. At the turnoff towards Ironside Mountain. 1057 Comment
  UCD102503  Ribes sanguineum var. sanguineum James P. Smith; J. O. Sawyer 1974-6-2 7653 Humboldt location unknown. 1371 Comment
  UC176486  Rigiopappus leptocladus Joseph P. Tracy Jul 27 1908-Jul 30 1908 2686 Humboldt opposite Buck Mountain; Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  RSA168871  Rigiopappus leptocladus Joseph P. Tracy 1950-7-6 18996 Humboldt Two miles south of Burr Valley on the Albee Road. 1159 Comment
  JEPS2836 Image available Romanzoffia tracyi Joseph P. Tracy 1933-5-9 11008 Humboldt wet slide on bluff near Ocean; Northern Coast Region, Vicinity of Trinidad; Vicinity of Trinidad, Humboldt Co. 15 Comment
  UC775205  Romanzoffia tracyi H. E. and S. T. Parks 1933-3-1 5269 Humboldt Spruce Cove 2 mi n of Trinidad; Spruce Cove Comment
Read comments
Jun 26 2012
  UC198651  Rorippa curvisiliqua Joseph P. Tracy 1916-5-31 4693 Humboldt along Eel River from South Fork to Scotia (Holmes Flat); Northern Coast Ranges, along Eel River 60 Comment
  CHSC19514  Rorippa nasturtium-aquaticum J. F. Knezevich 1968-5-14 433 Humboldt Collected 13 miles south of Ferndale at Cape Mendocino. -15 Comment
  UC562691  Rorippa nasturtium-aquaticum Joseph P. Tracy 1935-5-25 13862 Humboldt Fort Seward 106 Comment
  CAS-BOT-BC147434  Rosa californica Doris Kildale 1931-6-6 10869 Humboldt Gans Prairie, Orick - Weitchpec Road Comment
  JEPS47283  Rosa eglanteria W. L. Jepson 1936-8-18 17947 Humboldt 1/2 mi nw Petrolia (along a gully in the village) Comment
  CAS-BOT-BC146496  Rosa gymnocarpa Doris K. Kildale 1927-7-3 3644 Humboldt Willow Creek Flat 152 Comment
  HSC70703  Rosa gymnocarpa Gail Newton 1980-7-14 1547 Humboldt Near Deadman Ridge 362 Comment
  CAS-BOT-BC146833  Rosa nutkana M. S. Jussel 1931-5-2 s.n. Humboldt 6 miles from Garberville 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
  UC1199026  Rosa nutkana var. nutkana Joseph P. Tracy 1927-7-4 8230 Humboldt Sibley Ranch Iaqua 609 Comment
  JEPS45698  Rosa pisocarpa Joseph P. Tracy 1925-6-7 7079 Humboldt near the South Fork; Northern Coast Ranges, Trinity River Valley 182 Comment
  CAS-BOT-BC146880  Rosa rubiginosa C. B. Wolf 1931-8-28 2363 Humboldt 1/8 mile from Rohnerville on road to Fortuna 30 Comment
  CAS-BOT-BC148220  Rosa spithamea L. R. Abrams 1918-6-15 7102 Humboldt Brannan Mt. near Willow Creek 1371 Comment
  HSC100908  Rosa spithamea Carl C. Marshall Jun 1886 306 Humboldt Trail E of Hoopa. Comment
  HSC40998  Rubus leucodermis J. O. Sawyer 1975-10-17 2708 Humboldt Along Big Hill Rd. 915 Comment
  HSC73352  Rubus leucodermis M. A. Baker 1980-6-7 1861 Humboldt Near Ammon Creek 732 Comment
  RSA89562  Rubus leucodermis Philip A. Munz 1954-7-23 19862 Humboldt About 6 miles E of Dinsmore's. 762 Comment
  HSC19656  Rubus parviflorus Lincoln Constance 1934-5-31 756 Humboldt S Fork of the Eel River, Bull Creek Flat, along Bull Creek, W boundary of park to Grasshopper Peak, N side of creek Comment
  SEINET5320889  Rubus parviflorus A. T. Leiser 1980-7-9 Humboldt North of Orick; North of Orick, Highway 101 reroute, near Redwood Park Comment
  UC154208  Rubus parviflorus J. P. Tracy 1900-5-22 799 Humboldt immediate vicinity Eureka; immediate vicinity of Eureka 0 Comment
  SEINET4976242  Rubus parviflorus Unknown 1938-8-8 15398 Humboldt Elk River, 6 miles S of Eureka Comment
  JEPS47287  Rubus praecox H. E. Parks and Joseph P. Tracy 1932-8-13 10347 Humboldt 3 mi e Trinidad; Northern Coast Region 60 Comment
  UC1541464  Rubus praecox H. E. Parks April 1935 5537 Humboldt Trinidad Comment
  CHSC19742  Rubus spectabilis Gary J. Stebbins 1970-2-21 9 Humboldt Patricks Point State Park. Comment
  UC1199046  Rubus spectabilis Joseph P. Tracy 1931-4-12 9333 Humboldt near Blue Lake (Mad River (at Essex)); Northern Coast Region, Mad River 15 Comment
  JEPS47708  Rubus ursinus Lincoln Constance 1934-5-29 727 Humboldt Upper Look Prairie South Fork Eel River, Bull Creek Region 365 Comment
  UCD17614  Rubus ursinus H. Olmo; T. S. Mallah 1946-6-26 46- 051 Humboldt California. Humboldt County: 23.1 miles from Ettersburg on road to Dyerville. Comment
  HSC76208  Rudbeckia klamathensis Overton, Butler 1979-8-2 12527 Humboldt Near Bret Hole, close to the town of Hoopa 1554 Comment
  HSC35025  Rudbeckia occidentalis K. Irwin 1975-8-16 Humboldt Grogans Hole area. Comment
  UC1223160  Rudbeckia occidentalis Joseph P. Tracy 1948-9-12 18204 Humboldt meadow at Box Camp; Trinity Summit 1463 Comment
  SEINET4206289  Rumex acetosella J. Raycraft 1966-4-23 s.n. Humboldt Arcata Comment
  UC153979  Rumex occidentalis Joseph P. Tracy 1910-6-5 3148 Humboldt near Samoa; Northern Coast Region, Humboldt Bay Region 0 Comment
  RSA275410  Rupertia physodes Thomas W. Nelson, Jane Nelson, A. P. Nelson 1977-7-1 3573 Humboldt Along road 2S08 below Goat Hill. 1524 Comment
  SEINET3893324  Ruppia maritima Rick Lundquist 1979-5-31 111 Humboldt Arcata South Quadrangle. At south end of H Street.; 0 0 Comment
  UCD92343  Rytidosperma penicillatum Ray Evans 1956-7-19 s.n. Humboldt Bear River, 3 miles east of Capetown. Comment
  UC1103530  Sagina apetala Joseph P. Tracy 1921-4-24 5435 Humboldt Phillipsville Flat Northern Coast Ranges, S. Fork Eel R., Phillipsville Flat 91 Comment
  UC1103532  Sagina apetala Joseph P. Tracy 1946-6-23 17598 Humboldt roadside near Dan McBride place Kneeland Prairie 762 Comment
  UC205455  Sagina procumbens Joseph P. Tracy 1920-6-6 5338 Humboldt Freshwater Creek near Wrangletown; Northern Coast Ranges, around Humboldt Bay, Freshwater Creek 30 Comment
  UCD99147  Salicornia pacifica Gordon Leppig 1998-8-6 995 Humboldt Arcata, Arcata Marsh and Wildlife Sanctuary. On Humboldt bay side of Klopp Lake dike. 2 Comment
  HSC99700  Salix exigua Glenn W. K. Shelton 2010-7-10 30 Humboldt Van Duzen River along State Rte. 36, 2 mi. W of Grizzly Creek Redwoods State Park, across from mile marker 15.00 91 Comment
  POM220141  Salix exigua H. E. Parks, Joseph P. Tracy 1931-5-17 975 Humboldt Mouth of Willow Creek at Trinity River. 150 Comment
  POM220144  Salix exigua H. E. Parks, Joseph P. Tracy 1931-5-17 969 Humboldt Mouth of Willow Creek at Trinity River. 150 Comment
  SBBG58913  Salix exigua var. hindsiana C. R. Ball, H. Parks, J. Tracy 1932-5-17 1336 Humboldt above Trinity River, 1 mi below bridge on Trinity Hwy 152 Comment
  SD992  Salix exigua var. hindsiana Herold E. Parks 1931-5-14 958 Humboldt Fernbridge, Eel River, on gravel bars 10 Comment
  UC481302  Salix exigua var. hindsiana Harold E. Parks and Joseph P. Tracy 1931-5-17 970 Humboldt mouth of Willow Creek at Trinity R. 150 Comment
  UC481304  Salix exigua var. hindsiana Harold E. Parks and Joseph P. Tracy 1931-5-17 971 Humboldt mouth of Willow Creek at Trinity R. 150 Comment
  RSA0038361  Salix hindsiana var. leucodendroides Harold E. Parks 1931-8-25 01061 Humboldt Blue Slide, Van Duzen River. 90 Comment
  CAS-BOT-BC107701  Salix hookeriana Harold E. Parks 1931-5-12 954 Humboldt Samoa, Humboldt Bay Comment
  CAS-BOT-BC107713  Salix hookeriana Doris K. Kildale 1927-3-25 3003 Humboldt Near Buckspot School House 50 Comment
  CAS-BOT-BC107736  Salix hookeriana Harold E. Parks 1931-5-28 1000 Humboldt Little River Lagoon Comment
  CHSC96715  Salix hookeriana Gordon Leppig 2005-4-8 2211 Humboldt Humboldt Bay Dunes and Wetlands. Eureka, swamp at west end of W. Hawthorne St. NAD 27 UTM Zone 10, 4515862 N, 400315 E. 3 Comment
  HSC40862  Salix hookeriana Linda M. Barker 1976-4-30 1422 Humboldt Lanphere-Christensen Dunes, 3 mi. W of Arcata Comment
  HSC40870  Salix hookeriana Linda M. Barker 1976-4-13 1383 Humboldt Lanphere-Christensen Dunes, 3 mi. W of Arcata Comment
  HSC41657  Salix hookeriana Thomas W. Nelson 1977-11-3 3759 Humboldt Beside Martin's Slough just upstream from Eureka Muni Golf Course Comment
  HSC90437  Salix hookeriana Jean Hanson 1980-3-8 15 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
  UC1196544  Salix hookeriana Joseph P. Tracy 1935-3-3 13715 Humboldt near mouth Mad R. 6 Comment
  UC1196673  Salix hookeriana Joseph P. Tracy 1925-11-15 7315 Humboldt Table Bluff Northern Coast Region, around Humboldt Bay (same region as #6929) 60 Comment
  UC1196681  Salix hookeriana Joseph P. Tracy 1919-3-30 5123 Humboldt Jacoby Creek Northern Coast Ranges, around Humboldt Bay (near the quarry) 91 Comment
  UC1225929  Salix hookeriana Joseph P. Tracy 1947-2-23 17669 Humboldt Bridgeville Van Duzen River 198 Comment
  UC146209  Salix hookeriana J. P. Tracy 1905-11-5 2399 Humboldt Immediate vicinity of Eureka 0 Comment
  UC481336  Salix hookeriana Harold E. Parks August, 1931 1057 Humboldt Bishop Pine Lodge Trinidad 150 Comment
  UC481346  Salix hookeriana Harold E. Parks 1931-5-12 952 Humboldt Samoa Humboldt Bay, Samoa Comment
  UC490478  Salix hookeriana Joseph P. Tracy 1932-8-27 10755 Humboldt along Van Duzen R. Alton (<1st. tree> after crossing small creek separating our parking place from open river bar.); North Coast Ranges, Van Duzen R. 30 Comment
  UC492330  Salix hookeriana Harold E. and Susan T. Parks 1932-4-3 1100 Humboldt Little R. Lagoon Trinidad; , Little River Lagoon Comment
  UC506346  Salix hookeriana Joseph P. Tracy 1933-3-19 10925 Humboldt on Van Duzen R. Blue Slide; Northern Coast Ranges, Van Duzen R. 91 Comment
  UC512081  Salix hookeriana Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-11 1224 Humboldt 1 mi n Samoa (pine barrens near the coast) Comment
  UC512105  Salix hookeriana Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-11 1208 Humboldt 4 1/2 mi s Trinidad; Little River Lagoon Comment
  UC512106  Salix hookeriana Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-11 1207 Humboldt 4 1/2 mi s Trinidad; Little River Lagoon Comment
  UC512120  Salix hookeriana Harold E. Parks and Joseph P. Tracy 1933-3-19 11005 Humboldt 2 mi w Bridgeville; Van Duzen River 228 Comment
  UC519341  Salix hookeriana Joseph P. Tracy 1933-7-20 12808 Humboldt near Blue Lake (on gravel bar); Northern Coast Region, Mad River 15 Comment
  UC709426  Salix hookeriana Joseph P. Tracy 1941-8-3 16980 Humboldt Table Bluff; adjoining coast sand dunes at w end of bluff 3 Comment
  UCD111036  Salix hookeriana Linda M. Barker 1976-4-13 1382 Humboldt 3 miles west of Arcata. Comment
  HSC56151  Salix jepsonii G. L. Clifton, Griswold 1979-8-1 12002 Humboldt Near N Trinity Mtn., close to the town of Hoopa. 1798 Comment
  JEPS14791  Salix jepsonii Joseph P. Tracy 1933-7-16 12773 Humboldt meadow at McKay Camp S. Fork Mt.; Northern Coast Ranges 1676 Comment
  JEPS12977  Salix laevigata Joseph P. Tracy 1931-10-18 9737 Humboldt on Eel River Camp Grant; Northern Coast Ranges 60 Comment
  UC469475  Salix laevigata Joseph P. Tracy 1931-10-18 9737 Humboldt on Eel R. Camp Grant; Northern Coast Ranges, Eel R., Camp Grant 60 Comment
  UC519387  Salix laevigata Joseph P. Tracy 1933-6-9 12528 Humboldt along Eel R. Shively; Northern Coast Ranges, , Eel R. 30 Comment
  HSC19985  Salix lasiandra J. P. Tracy 1933-7-16 12772 Humboldt S Fork Mtn., Mckay Camp 1677 Comment
  HSC19989  Salix lasiandra H. E. Parks, S. T. Parks 1932-4-5 1101 Humboldt Little River Lagoon Comment
  UC492484  Salix lasiandra subsp. lasiandra Harold E. and Susan T. Parks 1932-4-16 1099 Humboldt ca. 16 km. from mouth of Eel R. Ferndale Comment
  CAS-BOT-BC125224  Salix lasiandra var. lasiandra Harold E. Parks; Susan T. Parks 1932-4-10 01101 Humboldt Little River Lagoon, Trinidad, at sea level Comment
  CAS-BOT-BC107606  Salix lasiolepis Joseph P. Tracy; Harold E. Parks; Carleton R. Ball 1932-5-17 1324 Humboldt On west slpe of Berry's Mountain, east of Redwood Creek, on Trinity Highway 762 Comment
  CAS-BOT-BC107620  Salix lasiolepis Doris K. Kildale 1929-2-28 6952 Humboldt Samoa Peninsula Comment
  JEPS14751  Salix lasiolepis Joseph P. Tracy 1932-6-4 10126 Humboldt Bridgeville; Northern Coast Ranges 228 Comment
  JEPS14764  Salix lasiolepis Joseph P. Tracy 1932-8-27 10753 Humboldt on Van Duzen River Blue Slide; Northern Coast Ranges 91 Comment
  UC1225927  Salix lasiolepis Joseph P. Tracy 1947-6-28 17755 Humboldt Bridgeville Van Duzen River 198 Comment
  UC469417 Image available Salix lasiolepis Joseph P. Tracy 1927-8-7 8305 Humboldt Redwood Creek, at Berry's 274 Comment
  UC481313  Salix lasiolepis H. E. Parks and Joseph P. Tracy 1931-5-17 976 Humboldt mouth of Willow Creek at Trinity River 150 Comment
  UC481808  Salix lasiolepis H. P. Bracelin 1931-5-1 269 Humboldt Sylvandale, between Miranda and Meyers South Fork of Eel River Comment
  UC490545  Salix lasiolepis Joseph P. Tracy 1932-4-24 9807 Humboldt between Miranda and Redway (S. Fork Eel R.); North Coast Ranges, S. Fork Eel R. 91 Comment
  UC490546  Salix lasiolepis Joseph P. Tracy 1932-4-24 9806 Humboldt between Miranda and Redway (S. Fork Eel R.); North Coast Ranges, S. Fork Eel R. 91 Comment
  UC504021  Salix lasiolepis Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-13 1254 Humboldt 2 mi E of Redwood Highway ( Mad River at Engelhart gravel pit, above Blue Lake) Comment
  UC512037  Salix lasiolepis Carleton R. Ball, Harold E. Parks, and Joseph P. Tracy 1932-5-17 1324 Humboldt w. slope Berry's Mt. (e. of Redwood Creek, on Trinity Hwy.) 762 Comment
  UC519331  Salix lasiolepis Joseph P. Tracy 1933-10-8 13085 Humboldt Blue Slide, on Van Duzen River 91 Comment
  UCD111583  Salix lasiolepis Carleton R. Ball; Harold E. Parks, Joseph P. Tracy 1932-5-13 01254 Humboldt Mad River at Engelhart gravel pit, 2 miles east of Redwood Highway and above Blue Lake Road. Comment
  CAS-BOT-BC107288  Salix lasiolepis var. bigelovii Joseph P. Tracy 1933-4-9 10968 Humboldt along Van Duzen R. 228 Comment
  CAS-BOT-BC107292  Salix lasiolepis var. bigelovii Carleton R. Ball; Harold E. Parks; Joseph P. Tracy 1932-5-12 01241 Humboldt floodplain of Van Duzen River at Blue Slide 91 Comment
  CAS-BOT-BC107295  Salix lasiolepis var. bigelovii Carleton R. Ball; Harold E. Parks; Joseph P. Tracy 1932-5-12 01247 Humboldt floodplain of Van Duzen River at Blue Slide 91 Comment
  CAS-BOT-BC107416  Salix lasiolepis var. lasiolepis Doris K. Kildale 1926-9-17 2802 Humboldt [Dobbyns] Dobbyn Creek Comment
  UC279091  Salix lemmonii J. P. Tracy Humboldt Comment
  POM184868  Salix lucida subsp. lasiandra H. E. Parks, Susan T. Parks 1932-5-12 1150 Humboldt Near bridge at mouth of Maple Creek. Big Lagoon. Comment
  CAS-BOT-BC125613  Salix melanopsis Doris K. Kildale 1928-6-10 5084 Humboldt Strongs Station - Van Duzen River Comment
  CAS-BOT-BC125636  Salix melanopsis Harold E. Parks; Joseph P. Tracy 1931-5-17 0973 Humboldt Mouth of Willow Creek at Trinity River 150 Comment
  JEPS14761  Salix melanopsis Joseph P. Tracy 1932-7-31 10291 Humboldt Eel River at mouth of Larrabee Creek; Northern Coast Ranges 60 Comment
  SBBG57922  Salix melanopsis H. E. Parks 1931-5-14 960 Humboldt Van Duzen River between Alton and Carlotta 15 Comment
  SBBG57935  Salix melanopsis H. E. Parks 1931-5-14 965 Humboldt Van Duzen River between Alton and Carlotta 15 Comment
  SJSU193  Salix melanopsis H. E. Parks 1931-5-14 960 Humboldt Van Duzen R between Alton & Carlotta 15 Comment
  UC1196570  Salix melanopsis Joseph P. Tracy 1932-7-31 10292 Humboldt at mouth of Larrabee Creek Eel R.; Northern Coast Ranges, Eel R. 60 Comment
  UC519360  Salix melanopsis Joseph P. Tracy 1933-6-7 12512 Humboldt on Van Duzen R. Blue Slide; Northern Coast Ranges, Van Duzen R. 91 Comment
  UC519372  Salix melanopsis Joseph P. Tracy 1933-6-7 12514 Humboldt on Van Duzen R. Blue Slide; Northern Coast Ranges, Van Duzen R., Blue Slide 91 Comment
  UC54764  Salix melanopsis P. E. Goddard 1901-7 16 Humboldt Hupa Comment
  SD977  Salix parksiana Harold E. Parks 1931-5-14 962 Humboldt Van Duzen River, between Alton and Carlotta, in river gravel. 14 Comment
  POM89803  Salix purpurea Joseph P. Tracy 1919-5-25 5137 Humboldt Humboldt Bay. Ryan's Slough 15 Comment
  CAS-BOT-BC129134  Salix scouleriana Harold E. Parks; Carleton R. Ball; Joseph P. Tracy 1932-5-11 1219 Humboldt 1 mile north of Samoa, approximately sea level. Comment
  CAS-BOT-BC129173  Salix scouleriana H. E. Parks 1933-1-24 1352 Humboldt Spruce Cove (Parks Ranch), Trinidad Comment
  HSC37875  Salix scouleriana Thomas W. Nelson 1976-3-22 2277 Humboldt S side of the Eureka Muni Golf Course Comment
  HSC38144  Salix scouleriana Thomas W. Nelson, James Nelson 1976-3-23 3278 Humboldt Eureka, E side of F St., 3800 block Comment
  SBBG57987  Salix scouleriana H. E. Parks 1931-5-14 957 Humboldt Little Larabee Bridge, Van Duzen River 450 Comment
  UC1196710  Salix scouleriana Joseph P. Tracy 1936-2-2 14768 Humboldt vicinity of Carlotta Carlotta 30 Comment
  UC275521  Salix scouleriana Joseph P. Tracy 1924-7-4 6716 Humboldt at Hungry Hollow Bald Mt.; Northern Coast Ranges 762 Comment
  UC490504  Salix scouleriana Joseph P. Tracy 1932-2-7 9771 Humboldt Scotia Northern Coast Ranges, Scotia 30 Comment
  UC490536  Salix scouleriana Joseph P. Tracy 1932-7-13 10518 Humboldt open groung at Corral Prairie (back from the meadows); Klamath Mts., Trinity Summit, Corral Prairie 1524 Comment
  CAS-BOT-BC128952  Salix sitchensis H. E. McMinn 1922-8-4 338 Humboldt Along Van Duzen River - 18 miles from Fortuna 6 Comment
  CAS-BOT-BC128955  Salix sitchensis Harold E. Parks 1931-3-26 908 Humboldt Alton, on Van Duzen River 15 Comment
  CAS-BOT-BC128986  Salix sitchensis Harold E. Parks 1931-3-25 903 Humboldt Orick, on Van Duzen River 6 Comment
  HSC20105  Salix sitchensis H. E. Parks 1931-3-24 910 Humboldt Trinidad Comment
  HSC20109  Salix sitchensis C. R. Ball, H. E. Parks, J. P. Tracy 1932-5-12 1230 Humboldt Van Duzen River, 1.5 mi. E of Alton 30 Comment
  HSC37879  Salix sitchensis Thomas W. Nelson 1976-3-22 2281 Humboldt Cooper's Gulch near Franklin Elementary School Comment
  HSC38183  Salix sitchensis Thomas W. Nelson, James Nelson 1976-3-5 3283 Humboldt Along S fork of Martins Slough just upstream from Eureka Muni Golf Course Comment
  HSC56143  Salix sitchensis G. L. Clifton, Griswold 1979-8-1 11971 Humboldt Near Mill Creek Lakes, close to the town of Hoopa 1707 Comment
  RSA178536  Salix sitchensis Joseph P. Tracy 1950-9-10 19365 Humboldt On foothills of the Cap Ridge. 0.5 mile S of town. Along coast rd 1 mile inland from Cape Mendocino. Comment
  UC1196712  Salix sitchensis Joseph P. Tracy 1935-3-3 13716 Humboldt near mouth Mad R. 6 Comment
  UC302155  Salix sitchensis Joseph P. Tracy 1926-3-14 7392 Humboldt on Van Duzen R. Blue Slide; Northern Coast Ranges, Van Duzen R., Blue Slide 91 Comment
  UC492340  Salix sitchensis Harold E. and Susan T. Parks 1932-4-12 1111 Humboldt on Van Duzen R. Blue Slide; Van Duzen R., Blue Slide 90 Comment
  HSC20132  Salix tracyi J. P. Tracy 1933-4-9 10966 Humboldt Bridgeville, along Van Duzen River 229 Comment
  UC1173598  Salix tracyi Joseph P. Tracy 1936-3-29 14785 Humboldt South Fork of Eel River, between Miranda and Redway 91 Comment
  UC1196608  Salix tracyi Joseph P. Tracy 1926-8-12 7761 Humboldt Redwood Creek, at Berry's 274 Comment
  POM118790  Sambucus callicarpa Marcus E. Jones 1924-4-26 s.n. Humboldt Eureka. Comment
  JEPS12746  Sambucus mexicana W. L. Jepson 1932-7-24 16390 Humboldt Mail Ridge 914 Comment
  UC168999  Sambucus racemosa var. racemosa Joseph P. Tracy 1910-4-17 3116 Humboldt near Forks of Elk River; Northern Coast Region, region about Humboldt Bay 0 Comment
  BLMAR57  Sanicula arctopoides Jennifer Anthony-Wheeler 1994-2-24 57 Humboldt Samoa dunes, growing in Samoa Dunes rare plant area in dune mat habitat 12 Comment
  JEPS220  Sanicula bipinnatifida Lincoln Constance 1934-6-3 806 Humboldt road from High Rock to Horse Prairie ((<High Rock> on Redwood Hwy, 1 mi n of Dyerville)); South Fork Eel River, Bull Creek Region Comment
  UC1197103  Sanicula bipinnatifida Joseph P. Tracy 1923-4-1 6173 Humboldt near Blue Lake (Northern Coast Ranges); Northern Coast Ranges 304 Comment
  HSC96220  Sanicula crassicaulis April A. Allard, Gregory D. O'Connell 2005-6-8 4 Humboldt 0.4 mi. S of Hwy. 299 on Titlow Hill Rd. 854 Comment
  UCR39790  Sanicula graveolens D. K. Imper 1982-7-2 s.n. Humboldt Six Rivers Nat. Forest, near Lassics Lookout, l mi. north of FS 2S08 on spur 1529 Comment
  HSC38885  Sanicula graveolens J. O. Sawyer 1970-6-25 2297 Humboldt 1646 Comment
  HSC101038  Sanicula tracyi A. Thoele, D. Pederson 1995-7-2 61 Humboldt East side of Pilot Creek, FB5 (fuel break) skid trail. 1188 Comment
  UC767191  Sanicula tracyi Joseph P. Tracy 1947-6-25 17717 Humboldt opposite Buck Mountain (along Van Duzen River, Dinsmore's); Van Duzen River, Dinsmore's 762 Comment
  HSC71008  Sanicula tuberosa J. M. DiTomaso 1981-5-15 2009 Humboldt Larabee Valley, 10 mi. E of Bridgeville on Hwy. 36 Comment
  JEPS950  Sanicula tuberosa Joseph P. Tracy 1925-5-30 7037 Humboldt Northern Coast Ranges, Laribee Valley Laribee Valley; Northern Coast Ranges, Laribee Valley 701 Comment
  JEPS973  Sanicula tuberosa Joseph P. Tracy 1927-6-12 8156 Humboldt Northern Coast Ranges, Horse Mountain Horse Mountain; Northern Coast Ranges, Horse Mountain 1219 Comment
  UC668103  Saponaria officinalis Joseph P. Tracy 1929-7-21 8644 Humboldt Trinity River Valley at Willow Creek; Trinity River Valley at Willow Creek 152 Comment
  RSA445278  Satureja douglasii Thekla Mohr 1918-07 3337 Humboldt Eel River. Comment
  POM284650  Satureja douglasii Lyman Benson 1929-7-16 s.n. Humboldt Weott Ranger Station. Comment
  CDA43206  Scandix pecten-veneris Richard R. Halse 2015-3-26 9381 Humboldt Along U.S. Hwy. 101 ca 2.4 miles southwest of Weott. Comment
  CAS-BOT-BC111381  Schoenoplectus acutus var. occidentalis Carl B. Wolf 1927-8-22 771 Humboldt Big Lagoon Comment
  HSC69628  Schoenoplectus acutus var. occidentalis R. Kalal 1980-5-4 31 Humboldt City of Arcata oxidation ponds 0 Comment
  SEINET4178878 Image available Scirpus pungens R. U. Hart 1946-6-7 Humboldt Pond W. of Centerville, 4 mi. W. of Ferndale on the S. side of the mouth of the Eel River Valley Comment
  UC668017  Scirpus pungens Joseph P. Tracy 1927-9-25 8368 Humboldt at Eureka (near bay shore) 6 Comment
  POM109662  Scoliopus bigelovii Marcus E. Jones 1924-4-28 s.n. Humboldt Scotia. Comment
  HSC15640  Scoliopus bigelovii E. W. Styskel 1963-3-9 6 Humboldt 3 mi. SE of Korbel on Snow Camp Rd. 290 Comment
  UC1409052  Scrophularia californica subsp. californica Robert F. Thorne and P. Everett 1965-8-9 35314 Humboldt Clam Beach County Park 3 Comment
  UC577337  Scutellaria antirrhinoides Harold E. Parks and Joseph P. Tracy 1934-6-27 11061 Humboldt Grouse Mountain 1432 Comment
  HSC97449  Scutellaria antirrhinoides Cara Witte 2007-6-7 218 Humboldt Along National Forest 1 on Kinsey Ridge. Approximately 2 miles southeast of intersection with 5N04. Near cattleguard. 1371 Comment
  HSC35354  Scutellaria siphocampyloides A. M. Montalvo, J. D. Ackerman 1975-6-22 483 Humboldt 6.4 mi. W of Dinsmore along Hwy. 36 Comment
  HSC38769  Secale cereale A. M. Montalvo, J. D. Ackerman 1975-6-10 446 Humboldt 1 mi. N of Samoa Blvd. and turnoff to Samoa Bridge, S of Manila. Along Humboldt Bay. Comment
  RSA178561  Sedum divergens Joseph P. Tracy 1950-8-8 19294 Humboldt Croghan Hole, on Trinity Summit Comment
  UC492242  Sedum obtusatum subsp. boreale Joseph P. Tracy 1932-7-17 10692 Humboldt head Devil's Hole (Trinity Summit, Klamath Mountains); Klamath Mountains, Trinity Summit, head Devil's Hole 1828 Comment
Read comments
Aug 17 2011
  HSC72663  Sedum radiatum M. A. Baker 1980-6-26 2469 Humboldt Near Sims Creek 610 Comment
  HSC98588  Sedum radiatum Cara Witte 2008-7-16 916 Humboldt Board Camp Mountain. Forest Service Road 4N38. 1/2 mile south of intersection with National Forest 1. 1409 Comment
  UC302107  Sedum radiatum Joseph P. Tracy 1926-7-5 7726 Humboldt Valley of South Yager Creek Northern Coast Ranges, Valley South Yager Creek 762 Comment
  RSA0104953  Sedum spathulifolium Joseph P. Tracy 1950-6-8 18715 Humboldt Bluffs at the Sand Cut. Wild Cat Rd. 2 miles S of Ferndale. 305 Comment
  UCR148800  Selaginella kraussiana Gordon Leppig 2000-4-12 1290 Humboldt Arcata: behind Humboldt State University, at base of stump near Fern Lake spillway 49 Comment
  CAS-BOT-BC69738  Selaginella wallacei Joseph P. Tracy 1932-3-20 9783 Humboldt Trinidad. 60 Comment
  UC1118079  Senecio glomeratus H. S. Yates 1936-6-18 5735 Humboldt 2 mi n Big Lagoon; Rocky Pt Quad. 30 Comment
  HSC57419  Senecio integerrimus G. L. Clifton, Griswold 1979-7-26 10182 Humboldt Near Salmon Mtn., close to the town of Forks of Salmon 2058 Comment
  CAS-BOT-BC364018  Senecio integerrimus var. major L. B. Kildale 1928-5-27 5957 Humboldt Kneeland Prairie 853 Comment
  UC427870  Senecio integerrimus var. major H. E. Parks and J. P. Tracy 1930-5-25 879 Humboldt Laribee Valley Comment
  UC581708  Senecio integerrimus var. major Joseph P. Tracy 1935-7-28 14326 Humboldt Head of Devils Hold Trinity Summit 1828 Comment
  UC917220  Senecio minimus J. M. Tucker 1948-9-4 1863 Humboldt Becks Ranch, Hydesville Comment
  UC581710  Senecio triangularis Joseph P. Tracy 1932-7-13 10523 Humboldt Corral Prairie , Corral Prairie (Trinity Summit) 1584 Comment
  HSC29884  Senecio vulgaris Thomas W. Nelson 1971-11-11 600 Humboldt Foot of Murray Rd., McKinleyville. Comment
  UCD135823  Senecio vulgaris H. E. Parks; S. T. Parks. 1943-6-1 24234 Humboldt Spruce Cove, Trinidad. 60 Comment
  HSC34610  Senecio vulgaris A. Montalvo 1975-5-24 273 Humboldt Samoa Dunes off Samoa Blvd., across from the boat landing Comment
  RSA168840  Senecio vulgaris Joseph P. Tracy 1943-11-28 17454 Humboldt Eel River bar at mouth of Van Duzen near Alton Comment
  CHSC55650  Sequoia sempervirens Dennis W. Morris 1991-4-24 20 Humboldt 2 mi e of Humboldt State Univ. in Redwood Park. Coastal mountains. 115 Comment
  HSC37393  Sequoia sempervirens Gary S. Lester, Roger L. Yearout, Judith G. Dickson 1974-7-24 500 Humboldt Along Lost Man Creek. 38 Comment
  MACF022873  Sequoia sempervirens Trudy R. Ericson 1978-9-3 964 Humboldt 3 mi. east of Carlotta on St. 36 60 Comment
  UC667965  Sequoia sempervirens Joseph P. Tracy 1935-12-8 14764 Humboldt near Korbel 304 Comment
  SEINET10612358  Sequoia sempervirens Joseph P. Tracy 1935-12-8 Tracy 14764 Humboldt Near Korbel. Scattering trees left in logged area, fruiting abundantly. 305 Comment
  SEINET3876370 Image available Sequoia sempervirens Ronald J. Mastrogiuseppe 1966-1-16 s.n. Humboldt Along State Route 299 from Arcata to Redding, Demonstration Forest, Simpson Timber Company.; 0 Comment
  HSC79421  Sherardia arvensis Kenneth Clark 1980-4-18 598 Humboldt Above Dead Man's Gulch 183 Comment
  UC1222508  Sidalcea diploscypha Joseph P. Tracy 1950-6-23 18871 Humboldt 3 mi ne Alderpoint (Dobbyn Creek); , ne of Alderpoint 213 Comment
  UC1121977  Sidalcea malachroides R. Stahelin 1933-5-15 19520 Humboldt T. P. L. Co. Eureka Quad. (Freshwater) Comment
  HSC35614  Sidalcea malviflora Thomas W. Nelson, B. Reinhardt 1975-7-30 2110 Humboldt Whiting Spring Comment
  HSC62693  Sidalcea malviflora Michelle Stevens 1979-5-25 139 Humboldt Junction of Hwy. 96 and the GO Rd. 640 Comment
  UC1197977  Sidalcea malviflora subsp. asprella Joseph P. Tracy 1930-7-23 9124 Humboldt Horse Mountain Northern Coast Ranges, Horse Mountain 1524 Comment
  HSC35603  Sidalcea malviflora subsp. nana Thomas W. Nelson, Jane P. Nelson, James Nelson 1975-7-15 2009 Humboldt French Camp, Bald Hills. Comment
  HSC103244  Sidalcea malviflora subsp. patula John McRae, Carrie Schreiber 2010-6-18 Humboldt USDA Forest Service, Humboldt Nursery, Baird Rd., McKinleyville 15 Comment
  RSA144570  Sidalcea malviflora subsp. patula Peter H. Raven, R. Snow 1958-7-20 s.n. Humboldt 2 miles south of jct. of Friday Ridge Road on Titlow Hill Road, near Grouse Mountain Comment
  UC177001  Sidalcea malviflora subsp. patula Joseph P. Tracy 1912-6-9 3669 Humboldt Alton Northern Coast Region, Alton 30 Comment
Read comments
May 9 2014
  JEPS67278  Sidalcea oregana subsp. eximia Joseph P. Tracy 1937-8-22 15671 Humboldt 2 mi s Field's Landing (at Still Ranch); s of Field's Landing, Still Ranch 6 Comment
  HSC56404  Sidalcea oregana subsp. spicata Griswold, Butler 1979-7-11 7000 Humboldt Near Snow Camp Lake, close to the town of Willow Creek. 1393 Comment
  UC502940  Sidalcea oregana subsp. spicata Joseph P. Tracy 1932-7-10 10382 Humboldt Corral Prairie Klamath Mountains, , Corral Prairie (Trinity Summit) 1524 Comment
  SEINET11996975  Sidalcea oregana subsp. spicata F. H. Utech, Sato, T.; Ohara, M. 1990-1 90 -308 Humboldt Six Rivers National Forest, 0.5 mi S of CA 199 on French Hill Rd (USFS Rd 411) 150 Comment
  HSC32097  Silene bolanderi D. E. Anderson, Thomas W. Nelson, S. Dowty 1972-6-17 5698 Humboldt McKeown Ranch, N of Dinsmore Comment
  UC465675  Silene californica P. E. Goddard 1907-5-29 f 101 Humboldt Van Duzen Comment
  HSC58156  Silene campanulata subsp. glandulosa G. L. Clifton, Griswold 1979-8-2 12208 Humboldt Near Oregon Creek, close to the town of Hoopa 1663 Comment
  CAS-BOT-BC384425  Silene coronaria Volney Rattan 1878-1-1 s.n. Humboldt Hoopa Valley Comment
  UC161034  Silene gallica Joseph P. Tracy 1904-7-24 2124 Humboldt at Eureka Northern Coast Region, at Eureka 0 Comment
  HSC84003  Silene gallica L. P. Janeway, C. K. Geldin-Meyers 1983-4-15 225 Humboldt Field around the new Science and Engineering Bldg., HSU campus 30 Comment
  JEPS30735  Silene hookeri Lincoln Constance, Alan A. Beetle with Joseph P. Tracy 1940-5-17 2612 Humboldt near Eureka; near Eureka, McClellan Mountain 822 Comment
  HSC4168  Silene laciniata subsp. californica C. B. Wolf 1927-8-29 1196 Humboldt 7 mi. S of Ferndale and Capetown, Bear River Ridge, Mt. Glen Comment
  HSC4171  Silene laciniata subsp. californica D. E. Anderson 1961-9-2 1768 Humboldt 3 mi. S of Cape Mendocino 3 Comment
  HSC48789  Silene laciniata subsp. californica Brad Klipfel 1975-6-17 666 Humboldt Along Titlow Hill Rd. Comment
  HSC57102  Silene laciniata subsp. californica Overton, Butler 1979-7-25 9834 Humboldt Near Ammon Creek, close to the town of Willow Creek. 671 Comment
  HSC57361  Silene laciniata subsp. californica Overton, Butler 1979-7-26 10065 Humboldt Near Cold Spring, close to the town of Willow Creek 1408 Comment
  CHSC19509  Sisyrinchium californicum Norman Dennis 1965-6-3 142 Humboldt Sphagnum bog at Big Lagoon County Park, southwest corner of Big Lagoon. Comment
  UC1134655  Smilacina racemosa R. Stahelin 1933-5-15 L.H. 23 Humboldt Freshwater Eureka Quadrangle (T.P.L. Co.) Comment
  UC15049  Smilacina racemosa Mrs. M. H. Manning April, 1901 13 Humboldt near Hupa Comment
  HSC93540  Solanum americanum Spadoni 1997-12-2 Humboldt 1335 J St., Eureka 15 Comment
  SEINET6030917  Solanum sarachoides Joseph P. Tracy 1940-10-15 16758 Humboldt Trinity River Valley, Willow Creek Comment
  UC1196155  Solanum umbelliferum Joseph P. Tracy 1937-7-24 15529 Humboldt 2 mi se of Devil's Hole (Trinity Summit); Trinity Summit 1584 Comment
  UC577352  Solanum umbelliferum Joseph P. Tracy 1937-5-30 15316 Humboldt Bridgeville 198 Comment
  RSA20813  Solidago canadensis var. gilvocanescens C. B. Wolf 1937-9-9 9311 Humboldt North Coast Range, Wildcat Ridge, 6.3 miles south of Ferndale. 305 Comment
  CAS-BOT-BC365430  Solidago elongata Alice Eastwood 1907-4-21 19 Humboldt Port Trinidad Comment
  CAS-BOT-BC365436  Solidago elongata Doris K. Kildale 1926-7-11 2369 Humboldt Capetown - Ferndale road near Mountain Glen Comment
  JEPS32395  Solidago elongata Lincoln Constance 1934-6-12 867 Humboldt n bank South Fork Eel River (Bull Creek Road, Dyerville); n bank South Fork Eel River, Bull Creek Region, Dyerville Comment
  SBBG28018  Solidago elongata H. E. Parks -Jul-1931 1056 Humboldt Trinidad 76 Comment
  RSA89769  Solidago spathulata P. A. Munz 1954-7-25 19873 Humboldt At Humboldt Lighthouse south of Samoa. Comment
  UC129319  Solidago spathulata Harley P. Chandler May 1901 1158 Humboldt Humboldt Bay North Coast Ranges, Humboldt Bay 3 Comment
  SD148219  Solidago spathulata var. spathulata G. K. Helmkamp, E. A. Helmkamp 2001-7-8 7023 Humboldt Samoa Peninsula, 2.6 miles south of California 255 bridge across Humboldt Bay. 14 Comment
  CAS-BOT-BC364970  Solidago velutina subsp. californica Carl B. Wolf 1927-8-29 1198 Humboldt 7 mi. s. of Ferndale & Capetown, Bear River Ridge, Mt. Glen Comment
  RSA474068  Soliva sessilis J. P. Smith 1977-4-23 9019 Humboldt 2.5 miles S of Shelter Cove Road. S Fork of Bear Creek at Wailaki Campground. 561 Comment
  HSC39803  Sonchus asper Peter Sorensen 1976-7-11 Humboldt King Salmon Comment
  HSC104456  Sonchus oleraceus Jeff Barrett, Keleigh Deitsch, Tessa Purdy 2014-4-13 25 Humboldt Samoa Peninsula, Fairhaven, along south side of Bay Street 5 Comment
  UC1198767  Sorbus californica Joseph P. Tracy 1932-7-12 10469 Humboldt head of Brett Hole Trinity Summit; Klamath Mountains 1828 Comment
  POM312952  Sparganium angustifolium subsp. emersum S. Galen Smith, Malcolm A. Nobs 1949-8-9 1228 Humboldt 1 mile north of Arcata at junction of Highways 101 and 299, Mad River Valley. Comment
  RSA244508  Sparganium angustifolium subsp. emersum Larry E. DeBuhr, Gary D. Wallace 1973-9-16 1198 Humboldt At Gold Bluff Beach in Prairie Creek Redwoods State Park. Comment
  HSC21348  Sparganium emersum D. E. Anderson 1961-9-9 1788 Humboldt Along S end of Hwy. 101 causeway over Big Lagoon. Comment
  UCSB25395  Sparganium emersum Keefe, Joseph 1967-7-8 Humboldt East side of U.S. Highway 101, turnoff to Crannell Road, north of Eureka 6 Comment
  HSC90396  Spergularia macrotheca Jean Hanson 1980-8-28 118 Humboldt Indian (Gunther) Island. In Humboldt Bay, city of Eureka. Across from the Guard Station. Comment
  POM160286  Spiraea densiflora Joseph P. Tracy 1926-6-20 7630 Humboldt Horse Mountain. 1463 Comment
  HSC19754  Spiraea douglasii D. E. Anderson 1961-9-9 1793 Humboldt Along S shore of Big Lagoon Comment
  HSC97923  Spiraea douglasii Cara Witte 2007-6-19 291 Humboldt Horse Mountain Botanical Area. Forest Service Road 6N38. Near Horse Mountain mine. 1289 Comment
  POM274921  Spiraea douglasii Lyman D. Benson 1929-7-15 1822 Humboldt Fortuna Bog near the sea. Comment
  POM312888  Spiraea douglasii Malcolm A. Nobs, S. Galen Smith 1949-8-9 1226 Humboldt 1 m N of Arcata at jct of Hwys 101 and 229. Mad River Valley. Comment
  RSA472778  Spiraea douglasii E. S. Spalding 1884-7-12 s.n. Humboldt Near Arcata. Comment
  SBBG3128  Spiraea douglasii M. J. Cody 1938-7-14 Humboldt near Trinidad Comment
  UC14209  Spiraea douglasii Chesnut and Drew 1888-8-10 Humboldt Arcata Comment
  JEPS64496  Spiranthes porrifolia Joseph P. Tracy 1916-6-19 4721 Humboldt Dobbyn Creek Northern Coast Ranges (swampy ground around a pond) 182 Comment
  JEPS62959  Stachys ajugoides Joseph P. Tracy 1938-6-15 15931 Humboldt Fortuna 15 Comment
  UC1225846  Stachys ajugoides var. rigida Joseph P. Tracy 1946-5-30 17547 Humboldt 5 mi e Carlotta (open flat by old Strong's District School House) 60 Comment
  UC668215  Stachys ajugoides var. rigida Joseph P. Tracy 1938-7-4 15987 A Humboldt Valley of South Yager Creek 762 Comment
  UC708096  Stachys ajugoides var. rigida C. V. Piper 1921-5-22 Humboldt Eureka Comment
  UC1239729  Stachys ajugoides var. rigida Joseph P. Tracy 1921-6-4 5810 Humboldt Carlotta Northern Coast Ranges 60 Comment
  UC668219  Stachys ajugoides var. rigida Joseph P. Tracy 1938-6-15 15937 Humboldt vicinity Carlotta 30 Comment
  UCLA71124  Stachys ajugoides var. rigida H. Lewis 1940-7-3 Humboldt Founders Tree Humboldt State Park Comment
  UC1239723  Stachys arvensis H. B. Tucker 1935-3-20 Humboldt Moron Ranch Arcata Bottom 9 Comment
  UC538020  Stachys arvensis Lyle W. Smith 1934-11-14 Humboldt Arcata Comment
  UC1239727  Stachys chamissonis Joseph P. Tracy 1906-6-24 2496 Humboldt region about Humboldt Bay (s slope of Humboldt Hill); Northern Coast Region 0 Comment
  RSA22551  Stachys emersonii H. E. Parks, S. T. Parks 1937-07 24025 Humboldt Spruce Cove, Trinidad. Comment
  HSC81924  Stachys mexicana Thomas W. Nelson, Jane P. Nelson 1979-7-3 4955 Humboldt Along road to Joe Losey property at junction of Kneeland and Maple Creek Rds. 610 Comment
  UCR80238  Stachys mexicana H. E. Parks, S. T. Parks 1937-1 24025 Humboldt North Coast, Spruce Cove, Trinidad 61 Comment
  UCD126028  Stachys rigida James P. Smith; Advanced Plant Taxonomy Class 1973 1973-5-26 6863 Humboldt Scotia Bluffs along the Eel River near Rio Dell. Comment
  HSC59441  Stachys rigida Kenneth Clark 1979-5-29 364 Humboldt 0.1 mi. past end of Granite Ave., along Jolly Giant Creek 23 Comment
  RSA12456  Stachys rigida subsp. quercetorum Carl B. Wolf 1934-6-30 5837 Humboldt 7 miles from Shelter Cove on road to Briceland. 152 Comment
  SD93012  Stachys rigida var. quercetorum W. Bertsch 1953-7-30 233 Humboldt Highway 101, 5 miles north of Arcata. Comment
  SEINET200613  Stellaria borealis subsp. sitchana Joseph P. Tracy 27 Jun - 30 Jul 1908 2884 Humboldt Valley of Van Duzen River, opposite Buck Mountain. 762 Comment
  UC668079  Stellaria borealis subsp. sitchana Joseph P. Tracy 1937-7-17 15443 Humboldt near Field's Landing (Still Ranch) 6 Comment
  UC1116227  Stellaria crispa Joseph P. Tracy 1943-3-21 17411 Humboldt Scotia 30 Comment
  UC1223445  Stellaria crispa Joseph P. Tracy 1950-7-15 19042 Humboldt near mouth of Raccoon Creek (Willow Creek vicinity, 1 mi ne of Patterson's Ranch); Willow Creek Comment
  HSC4276  Stellaria media D. B. Bader 1963-2-17 32 Humboldt Second of the Clam Beach Lagoons W. of Hwy.101 Comment
  HSC4269  Stellaria media Elrid H. Spinas 1948-5-22 30 Humboldt Horse Mtn. Comment
  UC183560  Stellaria nitens Joseph P. Tracy 1913-5-4 4045 Humboldt Kneeland Prairie; Northern Coast Ranges 762 Comment
  SDSU19192  Streptanthus tortuosus Michael G. Simpson, Michael Mesler and Michael Mayer 2008-5-27 3014 Humboldt Six Rivers National Forest. From Hwy 299, take Titlow Hill Road (at Berry Summit) ca. 1.7 miles south. Roadcut, north side of road. Ca. 1.4 aerial miles west-northwest of Horse Mtn. Radio Tower. 980 Comment
  UC1198799  Streptanthus tortuosus var. orbiculatus Joseph P. Tracy 1938-6-13 15909 Humboldt on exposed rock ledge near Cold Springs; North Coast Ranges, Grouse Mountain 1432 Comment
  UC1541461  Streptanthus tortuosus var. orbiculatus W. K. Parks July, 1933 Humboldt Buck Mountain Comment
  HSC102587  Streptopus amplexifolius var. americanus M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-29 1574 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1579 Comment
  UC175818  Streptopus amplexifolius var. americanus Joseph P. Tracy 1912-8-1 3956 Humboldt opposite Buck Mountain (Dinsmore's Ranch); Northern Coast Ranges, Valley of Van Duzen River 762 Comment
  HSC99624  Symphoricarpos albus var. laevigatus Thomas W. Nelson, James Nelson 1975-9-3 2196 Humboldt Above junction of Maple Creek-Kneeland Rd. Comment
  HSC57900  Symphoricarpos mollis Gilbert Muth 1979-7-31 11487 Humboldt Near Tish Tang A Tang Creek, S Fork, close to the town of Gasquet 1417 Comment
  HSC58035  Symphoricarpos mollis G. L. Clifton 1979-7-31 11870 Humboldt Near Tish Tang A Tang Creek, close to the town of Hoopa. 1356 Comment
  JEPS13646  Symphoricarpos mollis Lincoln Constance 1934-6-3 808 Humboldt road from High Rock to Horse Prairie (High Rock (on Redwood Hwy, 1 mi n of Dyerville)); South Fork Eel River, Bull Creek Region Comment
  HSC58831  Symphyotrichum bracteolatum Overton, Butler 1979-8-2 12678 Humboldt Near Grogan Hole, close to the town of Hoopa. 1554 Comment
  CHSC68779  Symphyotrichum chilense Vernon H. Oswald 1997-6-5 8539 Humboldt Samoa Dunes Recreation Area at the south tip of the North Spit of Humboldt Bay. 6 Comment
  HSC57206  Symphyotrichum spathulatum var. spathulatum Griswold, Butler 1979-7-12 7163 Humboldt Near Groves Prairie, close to the town of Willow Creek. 1256 Comment
  UC1239632  Symphytum asperum Joseph P. Tracy 1933-6-25 12629 Humboldt around Humboldt Bay (Salmon Creek Valley); Northern Coast Ranges, , Salmon Creek Valley 30 Comment
  UC1359832  Symphytum asperum Johnnie L. Gentry Jr. and Earl Jensen 1968-7-5 2120 Humboldt on Tompkins Hill Rd. s. of Eureka (ca. 2 mi. e. of Hwy. junction U.S. 101 and Tompkins Hill Rd.) 30 Comment
  UC168958  Synthyris reniformis Joseph Burtt Davy and Walter C. Blasdale Jun 21 1899-Jun 23 1899 5749 Humboldt Trinity Summit; North Coast Ranges Comment
  UCD124638  Synthyris reniformis K. Esau 1934-4-1 s.n. Humboldt Above Fort Seward. 457 Comment
  UC249515  Synthyris reniformis Joseph P. Tracy 1922-4-30 6039 Humboldt along road between Three Creeks and mouth of Willow Creek; Northern Coast Ranges, Brannan Mountain 914 Comment
  CHSC68504  Synthyris reniformis var. cordata Vernon H. Oswald 1997-4-10 8331 Humboldt Elk Head, north end of Trinidad State Beach. 30 Comment
  CAS-BOT-BC376718  Tanacetum bipinnatum Lewis S. Rose 1972-7-5 72005 Humboldt Samoa 3 Comment
  CAS-BOT-BC376734  Tanacetum bipinnatum David D. Keck; J. Clausen 1935-6-16 3388 Humboldt Mouth of Little River Comment
  HSC1030  Tanacetum bipinnatum J. Wendell Howe 1933-5-23 Humboldt Samoa Comment
  HSC35858  Tanacetum bipinnatum Thomas W. Nelson, James Nelson 1975-8-5 2137 Humboldt Along south spit of Humboldt Bay ca. 1 mile N. of Table Bluff Comment
  HSC6248  Tanacetum bipinnatum J. W. Johnson 1962-6-4 1405 Humboldt W end of Hollow 10, W.M Lanphere Farm, Samoa Peninsula Comment
  UC727173  Tanacetum camphoratum A. A. Heller 1924-7-23 13875 Humboldt Little River Comment
Read comments
Sep 29 2006
  RSA254744  Tauschia kelloggii Thomas W. Nelson, James Nelson 1973-5-28 956 Humboldt McKeown Ranch north of Dinsmore. Comment
  UC56716  Tellima grandiflora Harley P. Chandler May 1901 1232 Humboldt Humboldt Bay; North Coast Ranges 121 Comment
  CAS-BOT-BC77707  Thelypteris nevadensis L. R. Abrams 1916-7-22 6220 Humboldt Ridge between Mad + Trinity Rivs on Eureka - Red Bluff Road Comment
  UC495727  Thermopsis gracilis Joseph P. Tracy 1927-5-15 8045 Humboldt between Hoopa and Willow Camp; Sugar Bowl Mt. 457 Comment
  UC673060  Thermopsis gracilis Joseph P. Tracy 1937-5-31 15326 Humboldt rocky point at Ruby Creek (along Trinity Hwy); Willow Creek Canyon 518 Comment
  HSC100462  Thlaspi alpestre Carl C. Marshall Apr 1887 360 Humboldt Supply Creek, near Hoopa. Comment
  CAS-BOT-BC81317  Thuja plicata Doris K. Kildale 1927-2-20 2961 Humboldt Lord-Ellis road, east of Blue Lake Comment
  HSC55345  Tiarella trifoliata var. unifoliata Griswold, Butler 1979-7-12 7211 Humboldt Near Groves Prairie, close to the town of Willow Creek. 1256 Comment
  UC535760  Tiarella trifoliata var. unifoliata Eleanor Armstrong 1934-5-17 Humboldt Garden Club Grove Comment
  UC667101  Tiarella trifoliata var. unifoliata Joseph P. Tracy 1936-8-7 15085 Humboldt head of Little Hors-Linto Creek; Trinity Summit, head of Little Hors-Linto Creek 1371 Comment
  RSA12561  Tofieldia glutinosa subsp. occidentalis Carl B. Wolf 1934-7-2 5878 Humboldt At small lake at Snow Camp (Mtns E of Korbel) 1372 Comment
  UC11943  Tolmiea diplomenziesii J. Burtt Davy Jun 1899 5628 Humboldt Hoopa Mt.; North Coast Ranges Comment
  JEPS26267  Tonella tenella Joseph P. Tracy 1902-6-3 1666 Humboldt near Hubbards Station (on ridge between Eel River and South Fork); Northern Coast Ranges 609 Comment
  HSC75412  Torilis arvensis J. O. Sawyer, M. A. Ericksen 1980-7-7 3574 Humboldt Slopes along Aikens Creek, Adroni Research Area 457 Comment
  CAS-BOT-BC81364  Torreya californica Dr. A. Kellogg; W. G. W. Harford 1868-9 942 Humboldt unspecified Comment
  HSC6288  Tracyina rostrata J. P. Tracy 1930-6-15 8762 Humboldt Dobbyn Creek. 152 Comment
  HSC86487  Tracyina rostrata Tom Duebendorfer 1988-6-13 882 Humboldt N of Alderpoint, take Blocksburg Rd. N., 0.15 mi. E on Stewart Ranch Rd. 210 Comment
Read comments
May 18 2010
  UC1199328  Tracyina rostrata Joseph P. Tracy 1938-6-9 15975 Humboldt about 1 mi sw Alder Point (town) 304 Comment
  RSA0001653  Tracyina rostrata Joseph P. Tracy 1916-6-20 4735 Humboldt Southeastern Humboldt county. Alder Point on Eal River. 305 Comment
  CAS-BOT-BC377101  Tragopogon porrifolius Doris K. Kildale 1925-3-23 587 Humboldt Eureka 30 Comment
  CHSC32806  Tragopogon porrifolius Lora L. Anderson 1981-4-26 5 Humboldt Ca. 0.5 mi w of Mad River, 200 yds n of 200/299 separation bridge, 8 mi ne of Arcata. Along roadside. 30 Comment
  CAS-BOT-BC399991  Trautvetteria caroliniensis Joseph P. Tracy 1937-7-2 15387 Humboldt Happy Camp Mountain. (In Trinity Summit Range, northeast of Hawkins Bar.) 1280 Comment
  HSC98856  Triantha occidentalis subsp. occidentalis Cara Witte 2008-7-30 973 Humboldt Forest Service Road 5N04. 1/4 mile east of intersection with Forest Service Road 4N70. 1583 Comment
  HSC95824  Trientalis latifolia Kevin Thomas 2004-4-26 16 Humboldt Jacoby Creek Rd. Comment
  RSA239714  Trientalis latifolia Larry E. DeBuhr 1973-4-23 985 Humboldt Richardson Grove Redwood State Park. Comment
  UC180224  Trifolium albopurpureum var. dichotomum Joseph P. Tracy 1914-5-14 4452 Humboldt Fort Seward 121 Comment
  BLMAR385  Trifolium angustifolium Jennifer Anthony-Wheeler 2004-6-28 385 Humboldt King range, Mouth of Mattole River, along road in willow thickets 36 Comment
  UC1103431  Trifolium barbigerum Joseph P. Tracy and Ernest B. Babcock 1912-5-12 3636 Humboldt Eureka Northern Coast Ranges Comment
  UC1103434  Trifolium barbigerum Joseph P. Tracy 1912-5-12 3635 Humboldt Eureka Northern Coast Ranges Comment
  UC1197492  Trifolium barbigerum Joseph P. Tracy 1908-6-9 2670 Humboldt Kneeland Prairie Northern Coast Ranges 762 Comment
  UC1223478  Trifolium depauperatum var. depauperatum Joseph P. Tracy 1933-5-20 12242 Humboldt Petrolia Mattole Valley Comment
  UC1197490  Trifolium depauperatum var. depauperatum Joseph P. Tracy 1932-6-26 10273 Humboldt Fort Baker Ranch Northern Coast Ranges 762 Comment
  OBI78200  Trifolium dichotomum Joseph P. Tracy 1933-5-20 12234 Humboldt Mouth of Domingo Crk. Cape Mendocino, S of point of Cape 30 Comment
  RSA91498  Trifolium dubium F. W. Peirson 1923-7-11 3622 Humboldt 20 miles north of Eureka Comment
  RSA21098  Trifolium eriocephalum subsp. eriocephalum Carl B. Wolf 1937-6-14 8826 Humboldt Kneeland Prairie; North Coast Range. 823 Comment
  UC302111  Trifolium eriocephalum var. eriocephalum Joseph P. Tracy 1926-7-5 7729 B Humboldt Valley of South Yager Creek Northern Coast Ranges 762 Comment
  UC594253  Trifolium eriocephalum var. eriocephalum S. K. Harris, J. P. Tracy, and H. S. Yates 1936-6-17 3412 Humboldt Burr Valley Buck Mtn 1036 Comment
  RSA296715  Trifolium fragiferum Thomas W. Nelson 1973-7-24 1099 Humboldt On the flood plain of the Mad River at the north end of the Carson railroad bridge. Comment
  OBI4982  Trifolium fucatum Joseph P. Tracy 1950-6-8 18747 Humboldt Cape Ridge. One mi E of Cape Mendocino 152 Comment
  UC1197022  Trifolium fucatum Joseph P. Tracy 1906-6-10 2470 Humboldt nw slope Wragletown (lower foot); Northern Coast Ranges 152 Comment
  UC1562633  Trifolium fucatum Barbara Ertter with Thomas J. Delendick 1987-5-16 6932 Humboldt just w Berry Summit (Vista Point, ca 15 air mi e os Arcata, on Hwy 299) Comment
  CDA4343  Trifolium glomeratum E. C. Whitney 1977-6-23 Humboldt Loop Road, Fortuna. 0 Comment
  HSC77334  Trifolium incarnatum C. J. Thomas 1983-5-9 28 Humboldt Adjacent to Hwy. overpass walkway near HSU 23 Comment
  HSC102540  Trifolium longipes subsp. elmeri M. R. Mesler, Robin Bencie, Ian Zacher 2013-6-28 1526 Humboldt Bret Hole. 1.1 km SW of Trinity Summit 1106 Comment
  HSC99726  Trifolium longipes subsp. oreganum Glenn W. K. Shelton 2010-7-16 20 Humboldt Titlow Hill Rd., turnout on right 0.9 mi. S of Cold Springs, 0.2 mi. down road from Titlow Hill Rd. 1421 Comment
  UC1223332  Trifolium longipes var. oreganum Joseph P. Tracy 1947-7-27 17836 Humboldt Horse Mtn Comment
  HSC100536  Trifolium macraei Carl C. Marshall Jun 1885 50 Humboldt Bear River. Comment
  HSC45139  Trifolium microcephalum R. Sutherland 1978-5-19 8 .19578 Humboldt 131 Comment
  HSC38068  Trifolium microdon Thomas W. Nelson, Jane P. Nelson 1976-5-30 2639 Humboldt McKeown Ranch, N of Dinsmore. Comment
  UC1197551  Trifolium microdon Joseph P. Tracy 1932-5-1 9892 Humboldt Garberville vicinity Northern Coast Ranges 121 Comment
  HSC45145  Trifolium microdon R. Sutherland 1978-5-24 3 .24578 Humboldt Mckee Flat 287 Comment
  UC1223330  Trifolium pratense Joseph P. Tracy 1941-8-23 16995 Humboldt Eureka Comment
  RSA349524  Trifolium repens M. B. Dunkle 1936-8-18 4816 Humboldt South of Eureka Comment
  HSC32427  Trifolium subterraneum Linda M. Barker 1974-5-11 175 Humboldt Redwood National Park, Bald Hills Rd., Gans Prairie 549 Comment
  UC1197564  Trifolium variegatum var. melananthum Joseph P. Tracy 1915-6-6 4643 Humboldt Steven Hill place Northern Coast Region (Eureka) 0 Comment
  UC201371  Trifolium variegatum var. melananthum Joseph P. Tracy 1918-7-3 4990 Humboldt Shelter Cove Northern Coast Ranges 15 Comment
  UC1223528  Trifolium variegatum var. variegatum Joseph P. Tracy 1937-7-19 15460 Humboldt lower foothills nw slope; Buck Mtn 914 Comment
  UC175673  Trifolium variegatum var. variegatum Joseph P. Tracy 1913-6-20 4232 Humboldt n w slope Buck Mtn (lower foothills); Northern Coast Ranges 762 Comment
  UC1223314  Trifolium willdenovii Joseph P. Tracy 1936-6-9 14910 Humboldt near Hadley Place (upper valley); Norhern Coast Ranges, Mattole Valley Comment
  HSC40959  Trifolium wormskioldii Linda M. Barker 1976-6-1 1547 Humboldt Lanphere-Christensen Dunes, 3 mi. W of Arcata. Comment
  SEINET10862710  Trifolium wormskioldii var. wormskioldii A. Arthur Heller 1924-7-23 Heller 13876 Humboldt Wet soil in a ditch along the road leading to the lighthouse on Trinidad Head. Comment
  HSC90253  Triglochin concinna Jean Hanson 1981-5-10 137 Humboldt Indian Island, Humboldt Bay, city of Eureka, W end of island Comment
  UCR179285  Trillium R. G. Swinney 1968-3-8 217 Humboldt Arcata 152 Comment
  HSC15688  Trillium albidum D. E. Anderson 1963-5-25 2475 Humboldt 5 mi. N of Capetown along rd. Comment
  HSC41941  Trillium ovatum Richard G. Runyon 1977-4-23 8 Humboldt 2.5 mi. S of Shelter Cove Rd., S Fork of Bear Creek at Wailaki Campground 561 Comment
  HSC15700  Trillium ovatum Dan O'Brien 1962-4-21 Humboldt 0.5 mi. E of HSC campus Comment
  HSC69786  Trillium ovatum R. Kalal 1979-5-5 37 Humboldt Fickle Hill Rd. 1.5 mi. E of 11th St. 183 Comment
  CAS-BOT-BC521320  Trillium rivale J. H. Thomas 1949-6-12 897 Humboldt 2 miles west of Matins Ferry on road to Orick. Comment
  SEINET12051358  Trillium rivale F. H. Utech, Sato, T.; Ohara, M. 1990-1 90 -294 Humboldt Six Rivers National Forest, 0.5 mi S of CA 199 on French Hill Rd (USFS Rd 411) 150 Comment
  UC146242  Triphysaria eriantha subsp. eriantha J. P. Tracy 1904-4-24 2035 Humboldt immediate vicinity Eureka; immediate vicinity of Eureka 0 Comment
  UC1222443  Triphysaria versicolor subsp. faucibarbata Joseph P. Tracy 1935-5-25 13851 Humboldt Fort Seward 106 Comment
  UCSB15950  Triphysaria versicolor subsp. faucibarbata Breedlove, Dennis 1962-6-7 Humboldt 3 miles south of southern city limits of Eureka on U.S. Highway 101 3 Comment
  HSC99524  Trisetum canescens K. A. Wayman, Robin Bencie, M. Mesler, Julie Gregory 2010-7-22 187 Humboldt Near North Trinity Mtn, 11. 5 mi. E of Hoopa along Big Hill Rd (8N01), at Six Rivers National Forest boundary. 1433 Comment
  RSA129125  Trisetum canescens H. S. Yates 1936-6-17 5704 Humboldt Lower N.W. slope of Buck Mountain 793 Comment
  UC1103151  Trisetum cernuum J. P. Tracy 1900-5-22 800 1/2 Humboldt immediate vicinity Eureka 0 Comment
  UC1225868  Triteleia hyacinthina Joseph P. Tracy 1942-6-15 17136 Humboldt near Redcrest resort (Englewood); Englewood 91 Comment
  HSC38485  Triteleia laxa D. E. Anderson, J. P. Smith 1971-6-18 - 1065 Humboldt Chezem Rd., about 3 mi. E of bridge over Redwood Creek Comment
  UC535772  Triteleia laxa Eleanor Armstrong 1934-5-18 Humboldt Richardson Grove Comment
  HSC35821  Triteleia laxa Thomas W. Nelson, Jane P. Nelson, James Nelson 1975-6-20 1918 Humboldt Above Goat Rock, 2 mi. W of Bridgeville Comment
  SEINET200846  Triticum aestivum J. P. Tracy 1922-7-16 6102 Humboldt CULTIVATED; Eureka 0 Comment
  UC1103154  Triticum vulgare Joseph P. Tracy 1916-8-20 4751 Humboldt Eureka Northern Coast Ranges 0 Comment
  POM212073  Tsuga heterophylla C. B. Wolf 1930-10-25 1763 Humboldt 12 miles above Blue Lake along Blue Lake to Willow Creek Road (Lord Ellis Road). 305 Comment
  UC1174867  Tsuga heterophylla P. C. Everett and E. K. Balls 1959-10-25 23963 Humboldt 22 mi w from Willow Creek (along U. S. Hwy. 299 to Arcata); U. S. Hwy. 299 579 Comment
  UC153975  Typha latifolia Joseph P. Tracy 1910-10-8 3168 Humboldt region about Humboldt Bay Brainard's Point; Northern Coast Region, region about Humboldt Bay 0 Comment
  UC303180  Ulex europaeus Joseph P. Tracy 1923-11-24 6594 Humboldt Eureka Northern Coast Ranges, Eureka 0 Comment
  HSC62857  Umbellularia californica J. M. DiTomaso 1979-4-15 877 Humboldt Richardson Grove State Park, 80mi S of Eureka on Hwy. 101 Comment
  RSA46913  Umbellularia californica Doris K. Kildale 1926-1-24 1488 Humboldt Kneeland, near schoolhouse. 762 Comment
  UC183587  Umbellularia californica Joseph P. Tracy 1913-3-9 4020 Humboldt near Hydesville; Northern Coast Region 60 Comment
  CAS-BOT-BC403929  Urtica dioica subsp. gracilis Dennis W. Woodland 1970-8-12 1614 Humboldt 1 mile S. of Redwood River and Orick along U.S. 101 in ditch on west side of road Comment
  SEINET200749  Urtica dioica subsp. gracilis Joseph P. Tracy 1926-5-25 7516 Humboldt Around Humboldt Bay. Elk River Valley. 30 Comment
  SEINET202729  Urtica dioica subsp. holosericea Joseph P. Tracy 1950-9-22 19369 Humboldt Klamath River, near Slate Creek. 8 miles below Orleans. 122 Comment
  CAS-BOT-BC199313  Vaccinium ovatum John McLaren 1920-9-1 s.n. Humboldt Unspecified Comment
  JEPS58743  Vaccinium ovatum J. P. Tracy 1904-4-17 2017 Humboldt immediate vicinity Eureka 0 Comment
  RSA172257  Vaccinium ovatum R. F. Thorne 1957-9-3 19027 Humboldt Patrick's Point State Park. Comment
  RSA22543  Vaccinium ovatum H. E. Parks, S. T. Parks, C. R. Parks 1937-04 5638 Humboldt Spruce Cove, Trinidad. Comment
  UC1173686  Vaccinium ovatum Joseph P. Tracy 1939-5-30 16304 Humboldt Dinsmore's, along Van Duzen River Van Duzen River 731 Comment
  UC1197768  Vaccinium ovatum Joseph P. Tracy 1918-5-5 4919 Humboldt Ocean Beach Northern Coast Region, Humboldt Bay Comment
  CAS-BOT-BC199419  Vaccinium parvifolium C. B. Wolf 1930-10-26 1768 Humboldt Along the Redwood Highway 3 mi. so. of Del Norte Co. line 152 Comment
  RSA471156  Vaccinium parvifolium Anonymous 1924-7-10 s.n. Humboldt Arcata. Comment
  UC463032  Vaccinium parvifolium E. B. Copeland 1931-8-17 Humboldt Below Dinsmore; Van Duzen River Comment
  SD257259  Vaccinium parvifolium Jim R. Shevock 1972-3-26 1470 Humboldt Along Highway 299. 366 Comment
  HSC56072  Valeriana sitchensis subsp. sitchensis G. L. Clifton, Griswold 1979-7-31 11741 Humboldt Near Trinity Summit Guard Station, close to the town of Hoopa. 1845 Comment
  CAS-BOT-BC76050  Vancouveria hexandra Mrs. H. E. Wilder 1924-4-26 s.n. Humboldt Carlotta. Comment
  HSC3380  Vancouveria hexandra J. F. Knezevich 1968-5-21 448 Humboldt 20 mi. E of Arcata on Hwy. 299 at Lord Ellis Summit Comment
  UC502924  Vancouveria hexandra Joseph P. Tracy 1932-7-15 10620 Humboldt near Corral Prairie (Trinity Summit); Klamath Mountains, , near Corral Prairie 1524 Comment
  CAS-BOT-BC76052  Vancouveria hexandra W. R. Dudley 1899-6-1 s.n. Humboldt Unspecified. Comment
  CAS-BOT-BC76090  Vancouveria planipetala Peter H. Raven; R. Snow 1958-7-20 13631 Humboldt Friday Ridge Road to Grouse Mountain, 10.8 miles southwest of junction with United States Highway 299. Comment
  UC1126306  Vancouveria planipetala A. E. Wieslander 1931-5-19 207 Humboldt near Orleans; Klamath Forest, Hoopa Quadrangle Comment
  SEINET10904790  Vancouveria planipetala Jones 1985-5-10 Jones 35 Humboldt T5n,r6e,sec.34, grays falls campground off of hwy 299. Ceanothus, arbutus, Quercus lobata habitat 241 Comment
  HSC65843  Veratrum insolitum Gail Newton 1980-6-16 184 Humboldt Near Onion Mtn. 1280 Comment
  UC1225858  Veratrum viride Joseph P. Tracy 1942-9-6 17312 Humboldt near McKay (South Fork Mountain); South Fork Mountain 1676 Comment
  UC582590  Verbascum blattaria Joseph P. Tracy 1937-6-26 15366 Humboldt Trinity River Valley at Willow Creek; Trinity River Valley at Willow Creek 152 Comment
  RSA167234  Verbascum blattaria Joseph P. Tracy 1950-7-9 18980 Humboldt Willow Creek canyon, along Trinity Hwy. Comment
  JEPS11195  Verbascum thapsus W. L. Jepson 1936-8-12 17873 Humboldt South Fork Eel River Phillipsville; South Fork Eel River Comment
  RSA698160  Verbascum thapsus J. R. Bruff 1937-8-17 944 Humboldt Richardson Grove. Comment
  HSC70356  Veronica americana M. A. Baker 1980-6-7 1865 Humboldt Near Ammon Creek 732 Comment
  HSC21186  Veronica americana R. D. Modafferi 1965-5-1 64 Humboldt 2.3 mi. N of Trinidad on Trinity St. 0 Comment
  HSC69633  Veronica americana R. Kalal 1980-6-1 26 Humboldt 0.25 mi. N of Hwy. 299, at Essex turnoff 15 Comment
  SD92993  Veronica americana W. Bertsch 1953-7-30 232 Humboldt Highway 101 near Arcata Comment
  HSC21215  Veronica persica J. L. Baker 1965-3-9 1 Humboldt 4 mi. N of Arcata on N Bank Rd. Comment
  SEINET3825239 Image available Veronica scutellata Malcolm A. Nobs, S. Galen Smith 1949-8-3 1190 Humboldt Southern outskirts of Eureka Comment
  JEPS29846  Veronica scutellata Rimo Bacigalupi and L. Heckard, J. Weiler 1961-6-23 7836 Humboldt about 1 mi w of Carlotta (or about 0.5 mi e of Hydesville) Comment
  POM283765  Veronica serpyllifolia var. humifusa Lyman D. Benson 1928-7-12 478 Humboldt Weott Ranger Station. Seaward N Coast mtn range. S Fork Eel River. 61 Comment
  HSC73728  Veronica wormskjoldii M. A. Baker 1980-7-22 3098 Humboldt Near Grogan Hole. 1676 Comment
  SEINET12157686  Vicia americana J. P. Tracy 1942-1 17231 Humboldt Trinity Summit, near Box Camp 1524 Comment
  HSC57925  Vicia americana var. americana Muth 1979-7-31 11550 Humboldt Near Tish Tang A Tang Creek, S. Fork 1417 Comment
  SEINET10738618  Vicia americana var. americana J. Richard Abbott, B. S. Carlsward 1999-7-7 Abbott 13014 Humboldt On U.S. 101, near Holmes, 1.76 km south of Stafford Road. Comment
  UC1537113  Vicia americana var. americana Gordon H. True Jr. 1936-5-11 463 Humboldt 12 mi w Miranda (e slope of Elk Ridge); Elk Ridge 457 Comment
  UC709400  Vicia americana var. americana Joseph P. Tracy 1933-7-26 12905 Humboldt near 5350 ft Grouse Mt. summit; Grouse Mt. Comment
  UCD108778  Vicia benghalensis Rimo Bacigalupi; L. Heckard, J. Weiler 1961-6-23 7838 Humboldt About 1 mile west of Carlotta (or about 1/2 mile east of Hydesville). Comment
  HSC15279  Vicia sativa subsp. sativa J. L. Baker 1965-4-2 25 Humboldt Humboldt Meridian, 4 mi. N of Arcata on N Bank Rd. Comment
  HSC25947  Vicia tetrasperma Thomas W. Nelson 1970-12-1 291 Humboldt River bar of the Eel River north of the Scotia Bluff Comment
  RSA170273  Vicia tetrasperma Joseph P. Tracy 1916-5-16 4688 Humboldt Stitz Creek. Along Eel River from South Fork to Scotia. 61 Comment
  UCD108834  Vicia tetrasperma W. A. Williams 1951-6-15 s.n. Humboldt 10 mi. E. Arcata. Comment
  HSC102036  Viola bakeri M. R. Mesler, Robin Bencie, K. A. Wayman, Sydney Carothers 2011-7-13 939 Humboldt Forest edge surrounding Patterson Meadows 1566 Comment
  HSC21778  Viola cuneata Frances Oldridge 1946-1 Humboldt Willow Creek Comment
  UC164832  Viola glabella Joseph P. Tracy 1910-4-17 3118 Humboldt near forks of Elk River (region about Humboldt Bay); Northern Coast Region, Humboldt Bay 0 Comment
  UC275485  Viola hallii Joseph P. Tracy 1925-5-30 7034 Humboldt Laribee Valley; Northern Coast Ranges 701 Comment
  HSC34874  Viola ocellata Thomas W. Nelson, James Nelson 1975-5-5 1779 Humboldt Beside Hwy. 101, ~ 4 mi. S of the Salmon Creek Bridge Comment
  HSC36500  Viola purpurea subsp. purpurea Thomas W. Nelson, Jane P. Nelson, James Nelson 1975-6-14 1892 Humboldt Beside branch off FS 2S08 to Pine Mtn. Comment
  SBBG4837  Viola sempervirens H. and M. Dearing 1933-5-16 1066 Humboldt N of Weott Comment
  UC164805  Viola sempervirens Joseph P. Tracy 1904-4-3 2006 Humboldt Eureka; Northern Coast Region, Eureka 0 Comment
  UC963849  Viola sempervirens H. E. and S. T. Parks April, 1944 24268 Humboldt Spruce Cove; North Coast Ranges, Trinidad, Spruce Cove 60 Comment
  UCR37515  Viola sempervirens C. G. Phillips, L. Cole, S. A. Haultain, K. B. Barrows 1984-5-27 109 Humboldt Onion Mountain, Rd. 13 Nol, 7.0 mi west of Bluff Creek (SR 96) 1300 Comment
  RSA46480  Viola sempervirens Doris K. Kildale 1927-3-19 2901 Humboldt Luffenholtz Creek. Comment
  RSA121893  Vitis californica H. S. Yates 1936-6-24 5871 Humboldt 2 miles E of Bear Butte. Comment
  SEINET200826 Image available Vitis californica Joseph P. Tracy 1912-1 3799 Humboldt Along South Fork of Eel River, 5 mi above its mouth. 30 Comment
  UC1197981  Vitis californica Joseph P. Tracy 1926-9-6 7797 Humboldt Trinity River Valley Northern Coast Ranges (near the South Fork) 182 Comment
  CAS-BOT-BC385364  Vitis vinifera Henry M. Pollard 1945-9-4 s.n. Humboldt Near Camp Creek, Klamath River Canyon Comment
  CAS-BOT-BC198761  Vulpia bromoides Harley P. Chandler 1901-5-1 1119 Humboldt Humboldt Bay 30 Comment
  UC1145196  Vulpia microstachys var. pauciflora Joseph P. Tracy 1939-4-29 16247 Humboldt 8 mi below Orleans (near Slate Creek, Klamath River); Klamath River 121 Comment
  UC525672  Vulpia microstachys var. pauciflora Joseph P. Tracy 1926-5-2 7441 Humboldt near The South Fork (Trinity River Valley); Northern Coast Ranges, Trinity River Valley 182 Comment
  CAS-BOT-BC184161  Vulpia microstachys var. pauciflora L. S. Smith 1926-5-26 1837 Humboldt Tahoe National Forest. Last Chance Ridge Comment
  HSC71646  Vulpia myuros J. P. Smith, J. O. Sawyer, Jane Cole 1978-5-21 9930 Humboldt Ishi Pishi Rd., 2.5 mi. from its junction with Hwy. 96 in Orleans 213 Comment
  RSA244994  Vulpia myuros D. E. Anderson 1970-5-21 5078 Humboldt Scotia Bluffs Comment
  UCD94900  Vulpia myuros A. H. Murphy 1951-5-18 39 Humboldt Cook Ranch, 1/2 mile northwest of Petrolia. Comment
  UC1103718  Vulpia myuros var. hirsuta Joseph P. Tracy 1914-5-14 4432 1/2 Humboldt Fort Seward 106 Comment
  HSC33414  Whipplea modesta Thomas W. Nelson 1974-5-30 1348 Humboldt Along Hoopa-Redwood Valley Rd. Comment
  SBBG2858  Whipplea modesta H. and M. Dearing 1933-5-16 1242 Humboldt near Weott Comment
  CAS-BOT-BC77811  Woodwardia fimbriata Carl Duncan 1920-9-22 s.n. Humboldt Hoopa Valley Comment
  BLMAR681  Wyethia angustifolia Jennifer Wheeler 2013-6-25 681 Humboldt Humboldt County, Mattole Road, north side of Capetown 202 Comment
  HSC98077  Wyethia angustifolia Cara Witte 2007-7-11 485 Humboldt Cold Spring. 1/2 mile south of Titlow Hill. 1396 Comment
  HSC73870  Wyethia longicaulis Gail Newton 1980-7-14 1462 Humboldt Near Last Chance Ridge. 1219 Comment
  UC1199273  Wyethia longicaulis Joseph P. Tracy 1933-7-25 12897 Humboldt near Clear Lake; North Coast Ranges, Grouse Mountain 1524 Comment
  UCD137002  Wyethia longicaulis Gordon Leppig 1998-6-1 872 Humboldt Horse Mountain. Buck Flat, Titlow Hill Rd. At Ammon Ridge Rd. 1524 Comment
  SEINET12197025  Zauschneria californica E. A. York 1990-1-10 2675 Humboldt USGS Redwood Field Station, Arcata Comment
  HSC35862  Zeltnera muehlenbergii Thomas W. Nelson, James Nelson 1975-8-5 2133 Humboldt Along S spit of Humboldt Bay adjacent to jetty Comment
  HSC45833  Zeltnera muehlenbergii K. Irwin 1978-8-13 Humboldt Along Seawood Dr., 100 m W of Hwy. 101, N of Trinidad Comment
  CAS-BOT-BC532734  Zigadenus micranthus H. C. Cantelow 1936-5-17 1355 Humboldt 11 miles east of Orick, grade to Yreka Comment
  HSC36085  Zostera marina W. C. Vinyard 1963-10-23 Humboldt Near Fairhaven Comment



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